Commit | Line | Data |
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464dce18 IS |
1 | /* |
2 | * drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | |
6ddb7426 | 3 | * Copyright (c) 2016-2017 Mellanox Technologies. All rights reserved. |
464dce18 IS |
4 | * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> |
5 | * Copyright (c) 2016 Ido Schimmel <idosch@mellanox.com> | |
c723c735 | 6 | * Copyright (c) 2016 Yotam Gigi <yotamg@mellanox.com> |
6ddb7426 | 7 | * Copyright (c) 2017 Petr Machata <petrm@mellanox.com> |
464dce18 IS |
8 | * |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions are met: | |
11 | * | |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * 2. Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in the | |
16 | * documentation and/or other materials provided with the distribution. | |
17 | * 3. Neither the names of the copyright holders nor the names of its | |
18 | * contributors may be used to endorse or promote products derived from | |
19 | * this software without specific prior written permission. | |
20 | * | |
21 | * Alternatively, this software may be distributed under the terms of the | |
22 | * GNU General Public License ("GPL") version 2 as published by the Free | |
23 | * Software Foundation. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
26 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
29 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
35 | * POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/kernel.h> | |
39 | #include <linux/types.h> | |
5e9c16cc JP |
40 | #include <linux/rhashtable.h> |
41 | #include <linux/bitops.h> | |
42 | #include <linux/in6.h> | |
c723c735 | 43 | #include <linux/notifier.h> |
df6dd79b | 44 | #include <linux/inetdevice.h> |
9db032bb | 45 | #include <linux/netdevice.h> |
03ea01e9 | 46 | #include <linux/if_bridge.h> |
b5f3e0d4 | 47 | #include <linux/socket.h> |
428b851f | 48 | #include <linux/route.h> |
eb789980 | 49 | #include <linux/gcd.h> |
af658b6a | 50 | #include <linux/random.h> |
c723c735 | 51 | #include <net/netevent.h> |
6cf3c971 JP |
52 | #include <net/neighbour.h> |
53 | #include <net/arp.h> | |
b45f64d1 | 54 | #include <net/ip_fib.h> |
583419fd | 55 | #include <net/ip6_fib.h> |
5d7bfd14 | 56 | #include <net/fib_rules.h> |
6ddb7426 | 57 | #include <net/ip_tunnels.h> |
57837885 | 58 | #include <net/l3mdev.h> |
5ea1237f | 59 | #include <net/addrconf.h> |
d5eb89cf AS |
60 | #include <net/ndisc.h> |
61 | #include <net/ipv6.h> | |
04b1d4e5 | 62 | #include <net/fib_notifier.h> |
464dce18 IS |
63 | |
64 | #include "spectrum.h" | |
65 | #include "core.h" | |
66 | #include "reg.h" | |
e0c0afd8 AS |
67 | #include "spectrum_cnt.h" |
68 | #include "spectrum_dpipe.h" | |
38ebc0f4 | 69 | #include "spectrum_ipip.h" |
d42b0965 YG |
70 | #include "spectrum_mr.h" |
71 | #include "spectrum_mr_tcam.h" | |
e0c0afd8 | 72 | #include "spectrum_router.h" |
464dce18 | 73 | |
9011b677 IS |
74 | struct mlxsw_sp_vr; |
75 | struct mlxsw_sp_lpm_tree; | |
e4f3c1c1 | 76 | struct mlxsw_sp_rif_ops; |
9011b677 IS |
77 | |
78 | struct mlxsw_sp_router { | |
79 | struct mlxsw_sp *mlxsw_sp; | |
5f9efffb | 80 | struct mlxsw_sp_rif **rifs; |
9011b677 IS |
81 | struct mlxsw_sp_vr *vrs; |
82 | struct rhashtable neigh_ht; | |
83 | struct rhashtable nexthop_group_ht; | |
84 | struct rhashtable nexthop_ht; | |
dbe4598c | 85 | struct list_head nexthop_list; |
9011b677 IS |
86 | struct { |
87 | struct mlxsw_sp_lpm_tree *trees; | |
88 | unsigned int tree_count; | |
89 | } lpm; | |
90 | struct { | |
91 | struct delayed_work dw; | |
92 | unsigned long interval; /* ms */ | |
93 | } neighs_update; | |
94 | struct delayed_work nexthop_probe_dw; | |
95 | #define MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL 5000 /* ms */ | |
96 | struct list_head nexthop_neighs_list; | |
1012b9ac | 97 | struct list_head ipip_list; |
9011b677 | 98 | bool aborted; |
7e39d115 | 99 | struct notifier_block fib_nb; |
48fac885 | 100 | struct notifier_block netevent_nb; |
e4f3c1c1 | 101 | const struct mlxsw_sp_rif_ops **rif_ops_arr; |
38ebc0f4 | 102 | const struct mlxsw_sp_ipip_ops **ipip_ops_arr; |
9011b677 IS |
103 | }; |
104 | ||
4724ba56 IS |
105 | struct mlxsw_sp_rif { |
106 | struct list_head nexthop_list; | |
107 | struct list_head neigh_list; | |
108 | struct net_device *dev; | |
a1107487 | 109 | struct mlxsw_sp_fid *fid; |
4724ba56 IS |
110 | unsigned char addr[ETH_ALEN]; |
111 | int mtu; | |
bf95233e | 112 | u16 rif_index; |
6913229e | 113 | u16 vr_id; |
e4f3c1c1 IS |
114 | const struct mlxsw_sp_rif_ops *ops; |
115 | struct mlxsw_sp *mlxsw_sp; | |
116 | ||
e0c0afd8 AS |
117 | unsigned int counter_ingress; |
118 | bool counter_ingress_valid; | |
119 | unsigned int counter_egress; | |
120 | bool counter_egress_valid; | |
4724ba56 IS |
121 | }; |
122 | ||
e4f3c1c1 IS |
123 | struct mlxsw_sp_rif_params { |
124 | struct net_device *dev; | |
125 | union { | |
126 | u16 system_port; | |
127 | u16 lag_id; | |
128 | }; | |
129 | u16 vid; | |
130 | bool lag; | |
131 | }; | |
132 | ||
4d93ceeb IS |
133 | struct mlxsw_sp_rif_subport { |
134 | struct mlxsw_sp_rif common; | |
135 | union { | |
136 | u16 system_port; | |
137 | u16 lag_id; | |
138 | }; | |
139 | u16 vid; | |
140 | bool lag; | |
141 | }; | |
142 | ||
6ddb7426 PM |
143 | struct mlxsw_sp_rif_ipip_lb { |
144 | struct mlxsw_sp_rif common; | |
145 | struct mlxsw_sp_rif_ipip_lb_config lb_config; | |
146 | u16 ul_vr_id; /* Reserved for Spectrum-2. */ | |
147 | }; | |
148 | ||
149 | struct mlxsw_sp_rif_params_ipip_lb { | |
150 | struct mlxsw_sp_rif_params common; | |
151 | struct mlxsw_sp_rif_ipip_lb_config lb_config; | |
152 | }; | |
153 | ||
e4f3c1c1 IS |
154 | struct mlxsw_sp_rif_ops { |
155 | enum mlxsw_sp_rif_type type; | |
156 | size_t rif_size; | |
157 | ||
158 | void (*setup)(struct mlxsw_sp_rif *rif, | |
159 | const struct mlxsw_sp_rif_params *params); | |
160 | int (*configure)(struct mlxsw_sp_rif *rif); | |
161 | void (*deconfigure)(struct mlxsw_sp_rif *rif); | |
162 | struct mlxsw_sp_fid * (*fid_get)(struct mlxsw_sp_rif *rif); | |
163 | }; | |
164 | ||
e0c0afd8 AS |
165 | static unsigned int * |
166 | mlxsw_sp_rif_p_counter_get(struct mlxsw_sp_rif *rif, | |
167 | enum mlxsw_sp_rif_counter_dir dir) | |
168 | { | |
169 | switch (dir) { | |
170 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
171 | return &rif->counter_egress; | |
172 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
173 | return &rif->counter_ingress; | |
174 | } | |
175 | return NULL; | |
176 | } | |
177 | ||
178 | static bool | |
179 | mlxsw_sp_rif_counter_valid_get(struct mlxsw_sp_rif *rif, | |
180 | enum mlxsw_sp_rif_counter_dir dir) | |
181 | { | |
182 | switch (dir) { | |
183 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
184 | return rif->counter_egress_valid; | |
185 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
186 | return rif->counter_ingress_valid; | |
187 | } | |
188 | return false; | |
189 | } | |
190 | ||
191 | static void | |
192 | mlxsw_sp_rif_counter_valid_set(struct mlxsw_sp_rif *rif, | |
193 | enum mlxsw_sp_rif_counter_dir dir, | |
194 | bool valid) | |
195 | { | |
196 | switch (dir) { | |
197 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
198 | rif->counter_egress_valid = valid; | |
199 | break; | |
200 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
201 | rif->counter_ingress_valid = valid; | |
202 | break; | |
203 | } | |
204 | } | |
205 | ||
206 | static int mlxsw_sp_rif_counter_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, | |
207 | unsigned int counter_index, bool enable, | |
208 | enum mlxsw_sp_rif_counter_dir dir) | |
209 | { | |
210 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
211 | bool is_egress = false; | |
212 | int err; | |
213 | ||
214 | if (dir == MLXSW_SP_RIF_COUNTER_EGRESS) | |
215 | is_egress = true; | |
216 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); | |
217 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
218 | if (err) | |
219 | return err; | |
220 | ||
221 | mlxsw_reg_ritr_counter_pack(ritr_pl, counter_index, enable, | |
222 | is_egress); | |
223 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
224 | } | |
225 | ||
226 | int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp, | |
227 | struct mlxsw_sp_rif *rif, | |
228 | enum mlxsw_sp_rif_counter_dir dir, u64 *cnt) | |
229 | { | |
230 | char ricnt_pl[MLXSW_REG_RICNT_LEN]; | |
231 | unsigned int *p_counter_index; | |
232 | bool valid; | |
233 | int err; | |
234 | ||
235 | valid = mlxsw_sp_rif_counter_valid_get(rif, dir); | |
236 | if (!valid) | |
237 | return -EINVAL; | |
238 | ||
239 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); | |
240 | if (!p_counter_index) | |
241 | return -EINVAL; | |
242 | mlxsw_reg_ricnt_pack(ricnt_pl, *p_counter_index, | |
243 | MLXSW_REG_RICNT_OPCODE_NOP); | |
244 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); | |
245 | if (err) | |
246 | return err; | |
247 | *cnt = mlxsw_reg_ricnt_good_unicast_packets_get(ricnt_pl); | |
248 | return 0; | |
249 | } | |
250 | ||
251 | static int mlxsw_sp_rif_counter_clear(struct mlxsw_sp *mlxsw_sp, | |
252 | unsigned int counter_index) | |
253 | { | |
254 | char ricnt_pl[MLXSW_REG_RICNT_LEN]; | |
255 | ||
256 | mlxsw_reg_ricnt_pack(ricnt_pl, counter_index, | |
257 | MLXSW_REG_RICNT_OPCODE_CLEAR); | |
258 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); | |
259 | } | |
260 | ||
261 | int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp *mlxsw_sp, | |
262 | struct mlxsw_sp_rif *rif, | |
263 | enum mlxsw_sp_rif_counter_dir dir) | |
264 | { | |
265 | unsigned int *p_counter_index; | |
266 | int err; | |
267 | ||
268 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); | |
269 | if (!p_counter_index) | |
270 | return -EINVAL; | |
271 | err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
272 | p_counter_index); | |
273 | if (err) | |
274 | return err; | |
275 | ||
276 | err = mlxsw_sp_rif_counter_clear(mlxsw_sp, *p_counter_index); | |
277 | if (err) | |
278 | goto err_counter_clear; | |
279 | ||
280 | err = mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index, | |
281 | *p_counter_index, true, dir); | |
282 | if (err) | |
283 | goto err_counter_edit; | |
284 | mlxsw_sp_rif_counter_valid_set(rif, dir, true); | |
285 | return 0; | |
286 | ||
287 | err_counter_edit: | |
288 | err_counter_clear: | |
289 | mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
290 | *p_counter_index); | |
291 | return err; | |
292 | } | |
293 | ||
294 | void mlxsw_sp_rif_counter_free(struct mlxsw_sp *mlxsw_sp, | |
295 | struct mlxsw_sp_rif *rif, | |
296 | enum mlxsw_sp_rif_counter_dir dir) | |
297 | { | |
298 | unsigned int *p_counter_index; | |
299 | ||
6b1206bb AS |
300 | if (!mlxsw_sp_rif_counter_valid_get(rif, dir)) |
301 | return; | |
302 | ||
e0c0afd8 AS |
303 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); |
304 | if (WARN_ON(!p_counter_index)) | |
305 | return; | |
306 | mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index, | |
307 | *p_counter_index, false, dir); | |
308 | mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
309 | *p_counter_index); | |
310 | mlxsw_sp_rif_counter_valid_set(rif, dir, false); | |
311 | } | |
312 | ||
e4f3c1c1 IS |
313 | static void mlxsw_sp_rif_counters_alloc(struct mlxsw_sp_rif *rif) |
314 | { | |
315 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
316 | struct devlink *devlink; | |
317 | ||
318 | devlink = priv_to_devlink(mlxsw_sp->core); | |
319 | if (!devlink_dpipe_table_counter_enabled(devlink, | |
320 | MLXSW_SP_DPIPE_TABLE_NAME_ERIF)) | |
321 | return; | |
322 | mlxsw_sp_rif_counter_alloc(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_EGRESS); | |
323 | } | |
324 | ||
325 | static void mlxsw_sp_rif_counters_free(struct mlxsw_sp_rif *rif) | |
326 | { | |
327 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
328 | ||
329 | mlxsw_sp_rif_counter_free(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_EGRESS); | |
330 | } | |
331 | ||
4724ba56 IS |
332 | static struct mlxsw_sp_rif * |
333 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
334 | const struct net_device *dev); | |
335 | ||
7dcc18ad | 336 | #define MLXSW_SP_PREFIX_COUNT (sizeof(struct in6_addr) * BITS_PER_BYTE + 1) |
9011b677 IS |
337 | |
338 | struct mlxsw_sp_prefix_usage { | |
339 | DECLARE_BITMAP(b, MLXSW_SP_PREFIX_COUNT); | |
340 | }; | |
341 | ||
53342023 JP |
342 | #define mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) \ |
343 | for_each_set_bit(prefix, (prefix_usage)->b, MLXSW_SP_PREFIX_COUNT) | |
344 | ||
345 | static bool | |
346 | mlxsw_sp_prefix_usage_eq(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
347 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
348 | { | |
349 | return !memcmp(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
350 | } | |
351 | ||
6b75c480 JP |
352 | static bool |
353 | mlxsw_sp_prefix_usage_none(struct mlxsw_sp_prefix_usage *prefix_usage) | |
354 | { | |
355 | struct mlxsw_sp_prefix_usage prefix_usage_none = {{ 0 } }; | |
356 | ||
357 | return mlxsw_sp_prefix_usage_eq(prefix_usage, &prefix_usage_none); | |
358 | } | |
359 | ||
360 | static void | |
361 | mlxsw_sp_prefix_usage_cpy(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
362 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
363 | { | |
364 | memcpy(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
365 | } | |
366 | ||
5e9c16cc JP |
367 | static void |
368 | mlxsw_sp_prefix_usage_set(struct mlxsw_sp_prefix_usage *prefix_usage, | |
369 | unsigned char prefix_len) | |
370 | { | |
371 | set_bit(prefix_len, prefix_usage->b); | |
372 | } | |
373 | ||
374 | static void | |
375 | mlxsw_sp_prefix_usage_clear(struct mlxsw_sp_prefix_usage *prefix_usage, | |
376 | unsigned char prefix_len) | |
377 | { | |
378 | clear_bit(prefix_len, prefix_usage->b); | |
379 | } | |
380 | ||
381 | struct mlxsw_sp_fib_key { | |
382 | unsigned char addr[sizeof(struct in6_addr)]; | |
383 | unsigned char prefix_len; | |
384 | }; | |
385 | ||
61c503f9 JP |
386 | enum mlxsw_sp_fib_entry_type { |
387 | MLXSW_SP_FIB_ENTRY_TYPE_REMOTE, | |
388 | MLXSW_SP_FIB_ENTRY_TYPE_LOCAL, | |
389 | MLXSW_SP_FIB_ENTRY_TYPE_TRAP, | |
4607f6d2 PM |
390 | |
391 | /* This is a special case of local delivery, where a packet should be | |
392 | * decapsulated on reception. Note that there is no corresponding ENCAP, | |
393 | * because that's a type of next hop, not of FIB entry. (There can be | |
394 | * several next hops in a REMOTE entry, and some of them may be | |
395 | * encapsulating entries.) | |
396 | */ | |
397 | MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP, | |
61c503f9 JP |
398 | }; |
399 | ||
a7ff87ac | 400 | struct mlxsw_sp_nexthop_group; |
9011b677 | 401 | struct mlxsw_sp_fib; |
a7ff87ac | 402 | |
9aecce1c IS |
403 | struct mlxsw_sp_fib_node { |
404 | struct list_head entry_list; | |
b45f64d1 | 405 | struct list_head list; |
9aecce1c | 406 | struct rhash_head ht_node; |
76610ebb | 407 | struct mlxsw_sp_fib *fib; |
5e9c16cc | 408 | struct mlxsw_sp_fib_key key; |
9aecce1c IS |
409 | }; |
410 | ||
4607f6d2 PM |
411 | struct mlxsw_sp_fib_entry_decap { |
412 | struct mlxsw_sp_ipip_entry *ipip_entry; | |
413 | u32 tunnel_index; | |
414 | }; | |
415 | ||
9aecce1c IS |
416 | struct mlxsw_sp_fib_entry { |
417 | struct list_head list; | |
418 | struct mlxsw_sp_fib_node *fib_node; | |
61c503f9 | 419 | enum mlxsw_sp_fib_entry_type type; |
a7ff87ac JP |
420 | struct list_head nexthop_group_node; |
421 | struct mlxsw_sp_nexthop_group *nh_group; | |
4607f6d2 | 422 | struct mlxsw_sp_fib_entry_decap decap; /* Valid for decap entries. */ |
5e9c16cc JP |
423 | }; |
424 | ||
4f1c7f1f IS |
425 | struct mlxsw_sp_fib4_entry { |
426 | struct mlxsw_sp_fib_entry common; | |
427 | u32 tb_id; | |
428 | u32 prio; | |
429 | u8 tos; | |
430 | u8 type; | |
431 | }; | |
432 | ||
428b851f IS |
433 | struct mlxsw_sp_fib6_entry { |
434 | struct mlxsw_sp_fib_entry common; | |
435 | struct list_head rt6_list; | |
436 | unsigned int nrt6; | |
437 | }; | |
438 | ||
439 | struct mlxsw_sp_rt6 { | |
440 | struct list_head list; | |
441 | struct rt6_info *rt; | |
442 | }; | |
443 | ||
9011b677 IS |
444 | struct mlxsw_sp_lpm_tree { |
445 | u8 id; /* tree ID */ | |
446 | unsigned int ref_count; | |
447 | enum mlxsw_sp_l3proto proto; | |
448 | struct mlxsw_sp_prefix_usage prefix_usage; | |
449 | }; | |
450 | ||
5e9c16cc JP |
451 | struct mlxsw_sp_fib { |
452 | struct rhashtable ht; | |
9aecce1c | 453 | struct list_head node_list; |
76610ebb IS |
454 | struct mlxsw_sp_vr *vr; |
455 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
5e9c16cc JP |
456 | unsigned long prefix_ref_count[MLXSW_SP_PREFIX_COUNT]; |
457 | struct mlxsw_sp_prefix_usage prefix_usage; | |
76610ebb | 458 | enum mlxsw_sp_l3proto proto; |
5e9c16cc JP |
459 | }; |
460 | ||
9011b677 IS |
461 | struct mlxsw_sp_vr { |
462 | u16 id; /* virtual router ID */ | |
463 | u32 tb_id; /* kernel fib table id */ | |
464 | unsigned int rif_count; | |
465 | struct mlxsw_sp_fib *fib4; | |
a3d9bc50 | 466 | struct mlxsw_sp_fib *fib6; |
d42b0965 | 467 | struct mlxsw_sp_mr_table *mr4_table; |
9011b677 IS |
468 | }; |
469 | ||
9aecce1c | 470 | static const struct rhashtable_params mlxsw_sp_fib_ht_params; |
5e9c16cc | 471 | |
76610ebb IS |
472 | static struct mlxsw_sp_fib *mlxsw_sp_fib_create(struct mlxsw_sp_vr *vr, |
473 | enum mlxsw_sp_l3proto proto) | |
5e9c16cc JP |
474 | { |
475 | struct mlxsw_sp_fib *fib; | |
476 | int err; | |
477 | ||
478 | fib = kzalloc(sizeof(*fib), GFP_KERNEL); | |
479 | if (!fib) | |
480 | return ERR_PTR(-ENOMEM); | |
481 | err = rhashtable_init(&fib->ht, &mlxsw_sp_fib_ht_params); | |
482 | if (err) | |
483 | goto err_rhashtable_init; | |
9aecce1c | 484 | INIT_LIST_HEAD(&fib->node_list); |
76610ebb IS |
485 | fib->proto = proto; |
486 | fib->vr = vr; | |
5e9c16cc JP |
487 | return fib; |
488 | ||
489 | err_rhashtable_init: | |
490 | kfree(fib); | |
491 | return ERR_PTR(err); | |
492 | } | |
493 | ||
494 | static void mlxsw_sp_fib_destroy(struct mlxsw_sp_fib *fib) | |
495 | { | |
9aecce1c | 496 | WARN_ON(!list_empty(&fib->node_list)); |
76610ebb | 497 | WARN_ON(fib->lpm_tree); |
5e9c16cc JP |
498 | rhashtable_destroy(&fib->ht); |
499 | kfree(fib); | |
500 | } | |
501 | ||
53342023 | 502 | static struct mlxsw_sp_lpm_tree * |
382dbb40 | 503 | mlxsw_sp_lpm_tree_find_unused(struct mlxsw_sp *mlxsw_sp) |
53342023 JP |
504 | { |
505 | static struct mlxsw_sp_lpm_tree *lpm_tree; | |
506 | int i; | |
507 | ||
9011b677 IS |
508 | for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { |
509 | lpm_tree = &mlxsw_sp->router->lpm.trees[i]; | |
382dbb40 IS |
510 | if (lpm_tree->ref_count == 0) |
511 | return lpm_tree; | |
53342023 JP |
512 | } |
513 | return NULL; | |
514 | } | |
515 | ||
516 | static int mlxsw_sp_lpm_tree_alloc(struct mlxsw_sp *mlxsw_sp, | |
517 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
518 | { | |
519 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
520 | ||
1a9234e6 IS |
521 | mlxsw_reg_ralta_pack(ralta_pl, true, |
522 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
523 | lpm_tree->id); | |
53342023 JP |
524 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
525 | } | |
526 | ||
cc702670 IS |
527 | static void mlxsw_sp_lpm_tree_free(struct mlxsw_sp *mlxsw_sp, |
528 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
53342023 JP |
529 | { |
530 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
531 | ||
1a9234e6 IS |
532 | mlxsw_reg_ralta_pack(ralta_pl, false, |
533 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
534 | lpm_tree->id); | |
cc702670 | 535 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
53342023 JP |
536 | } |
537 | ||
538 | static int | |
539 | mlxsw_sp_lpm_tree_left_struct_set(struct mlxsw_sp *mlxsw_sp, | |
540 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
541 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
542 | { | |
543 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
544 | u8 root_bin = 0; | |
545 | u8 prefix; | |
546 | u8 last_prefix = MLXSW_REG_RALST_BIN_NO_CHILD; | |
547 | ||
548 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) | |
549 | root_bin = prefix; | |
550 | ||
551 | mlxsw_reg_ralst_pack(ralst_pl, root_bin, lpm_tree->id); | |
552 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) { | |
553 | if (prefix == 0) | |
554 | continue; | |
555 | mlxsw_reg_ralst_bin_pack(ralst_pl, prefix, last_prefix, | |
556 | MLXSW_REG_RALST_BIN_NO_CHILD); | |
557 | last_prefix = prefix; | |
558 | } | |
559 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); | |
560 | } | |
561 | ||
562 | static struct mlxsw_sp_lpm_tree * | |
563 | mlxsw_sp_lpm_tree_create(struct mlxsw_sp *mlxsw_sp, | |
564 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 565 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
566 | { |
567 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
568 | int err; | |
569 | ||
382dbb40 | 570 | lpm_tree = mlxsw_sp_lpm_tree_find_unused(mlxsw_sp); |
53342023 JP |
571 | if (!lpm_tree) |
572 | return ERR_PTR(-EBUSY); | |
573 | lpm_tree->proto = proto; | |
574 | err = mlxsw_sp_lpm_tree_alloc(mlxsw_sp, lpm_tree); | |
575 | if (err) | |
576 | return ERR_PTR(err); | |
577 | ||
578 | err = mlxsw_sp_lpm_tree_left_struct_set(mlxsw_sp, prefix_usage, | |
579 | lpm_tree); | |
580 | if (err) | |
581 | goto err_left_struct_set; | |
2083d367 JP |
582 | memcpy(&lpm_tree->prefix_usage, prefix_usage, |
583 | sizeof(lpm_tree->prefix_usage)); | |
53342023 JP |
584 | return lpm_tree; |
585 | ||
586 | err_left_struct_set: | |
587 | mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); | |
588 | return ERR_PTR(err); | |
589 | } | |
590 | ||
cc702670 IS |
591 | static void mlxsw_sp_lpm_tree_destroy(struct mlxsw_sp *mlxsw_sp, |
592 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
53342023 | 593 | { |
cc702670 | 594 | mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); |
53342023 JP |
595 | } |
596 | ||
597 | static struct mlxsw_sp_lpm_tree * | |
598 | mlxsw_sp_lpm_tree_get(struct mlxsw_sp *mlxsw_sp, | |
599 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 600 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
601 | { |
602 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
603 | int i; | |
604 | ||
9011b677 IS |
605 | for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { |
606 | lpm_tree = &mlxsw_sp->router->lpm.trees[i]; | |
8b99becd JP |
607 | if (lpm_tree->ref_count != 0 && |
608 | lpm_tree->proto == proto && | |
53342023 JP |
609 | mlxsw_sp_prefix_usage_eq(&lpm_tree->prefix_usage, |
610 | prefix_usage)) | |
fc922bb0 | 611 | return lpm_tree; |
53342023 | 612 | } |
fc922bb0 IS |
613 | return mlxsw_sp_lpm_tree_create(mlxsw_sp, prefix_usage, proto); |
614 | } | |
53342023 | 615 | |
fc922bb0 IS |
616 | static void mlxsw_sp_lpm_tree_hold(struct mlxsw_sp_lpm_tree *lpm_tree) |
617 | { | |
53342023 | 618 | lpm_tree->ref_count++; |
53342023 JP |
619 | } |
620 | ||
cc702670 IS |
621 | static void mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp, |
622 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
53342023 JP |
623 | { |
624 | if (--lpm_tree->ref_count == 0) | |
cc702670 | 625 | mlxsw_sp_lpm_tree_destroy(mlxsw_sp, lpm_tree); |
53342023 JP |
626 | } |
627 | ||
d7a60306 | 628 | #define MLXSW_SP_LPM_TREE_MIN 1 /* tree 0 is reserved */ |
8494ab06 IS |
629 | |
630 | static int mlxsw_sp_lpm_init(struct mlxsw_sp *mlxsw_sp) | |
53342023 JP |
631 | { |
632 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
8494ab06 | 633 | u64 max_trees; |
53342023 JP |
634 | int i; |
635 | ||
8494ab06 IS |
636 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LPM_TREES)) |
637 | return -EIO; | |
638 | ||
639 | max_trees = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LPM_TREES); | |
9011b677 IS |
640 | mlxsw_sp->router->lpm.tree_count = max_trees - MLXSW_SP_LPM_TREE_MIN; |
641 | mlxsw_sp->router->lpm.trees = kcalloc(mlxsw_sp->router->lpm.tree_count, | |
8494ab06 IS |
642 | sizeof(struct mlxsw_sp_lpm_tree), |
643 | GFP_KERNEL); | |
9011b677 | 644 | if (!mlxsw_sp->router->lpm.trees) |
8494ab06 IS |
645 | return -ENOMEM; |
646 | ||
9011b677 IS |
647 | for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { |
648 | lpm_tree = &mlxsw_sp->router->lpm.trees[i]; | |
53342023 JP |
649 | lpm_tree->id = i + MLXSW_SP_LPM_TREE_MIN; |
650 | } | |
8494ab06 IS |
651 | |
652 | return 0; | |
653 | } | |
654 | ||
655 | static void mlxsw_sp_lpm_fini(struct mlxsw_sp *mlxsw_sp) | |
656 | { | |
9011b677 | 657 | kfree(mlxsw_sp->router->lpm.trees); |
53342023 JP |
658 | } |
659 | ||
76610ebb IS |
660 | static bool mlxsw_sp_vr_is_used(const struct mlxsw_sp_vr *vr) |
661 | { | |
d42b0965 | 662 | return !!vr->fib4 || !!vr->fib6 || !!vr->mr4_table; |
76610ebb IS |
663 | } |
664 | ||
6b75c480 JP |
665 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find_unused(struct mlxsw_sp *mlxsw_sp) |
666 | { | |
667 | struct mlxsw_sp_vr *vr; | |
668 | int i; | |
669 | ||
c1a38311 | 670 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 671 | vr = &mlxsw_sp->router->vrs[i]; |
76610ebb | 672 | if (!mlxsw_sp_vr_is_used(vr)) |
6b75c480 JP |
673 | return vr; |
674 | } | |
675 | return NULL; | |
676 | } | |
677 | ||
678 | static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp, | |
0adb214b | 679 | const struct mlxsw_sp_fib *fib, u8 tree_id) |
6b75c480 JP |
680 | { |
681 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
682 | ||
76610ebb IS |
683 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
684 | (enum mlxsw_reg_ralxx_protocol) fib->proto, | |
0adb214b | 685 | tree_id); |
6b75c480 JP |
686 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
687 | } | |
688 | ||
689 | static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 690 | const struct mlxsw_sp_fib *fib) |
6b75c480 JP |
691 | { |
692 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
693 | ||
694 | /* Bind to tree 0 which is default */ | |
76610ebb IS |
695 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
696 | (enum mlxsw_reg_ralxx_protocol) fib->proto, 0); | |
6b75c480 JP |
697 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
698 | } | |
699 | ||
700 | static u32 mlxsw_sp_fix_tb_id(u32 tb_id) | |
701 | { | |
7e50d435 YG |
702 | /* For our purpose, squash main, default and local tables into one */ |
703 | if (tb_id == RT_TABLE_LOCAL || tb_id == RT_TABLE_DEFAULT) | |
6b75c480 JP |
704 | tb_id = RT_TABLE_MAIN; |
705 | return tb_id; | |
706 | } | |
707 | ||
708 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 709 | u32 tb_id) |
6b75c480 JP |
710 | { |
711 | struct mlxsw_sp_vr *vr; | |
712 | int i; | |
713 | ||
714 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
9497c042 | 715 | |
c1a38311 | 716 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 717 | vr = &mlxsw_sp->router->vrs[i]; |
76610ebb | 718 | if (mlxsw_sp_vr_is_used(vr) && vr->tb_id == tb_id) |
6b75c480 JP |
719 | return vr; |
720 | } | |
721 | return NULL; | |
722 | } | |
723 | ||
76610ebb IS |
724 | static struct mlxsw_sp_fib *mlxsw_sp_vr_fib(const struct mlxsw_sp_vr *vr, |
725 | enum mlxsw_sp_l3proto proto) | |
726 | { | |
727 | switch (proto) { | |
728 | case MLXSW_SP_L3_PROTO_IPV4: | |
729 | return vr->fib4; | |
730 | case MLXSW_SP_L3_PROTO_IPV6: | |
a3d9bc50 | 731 | return vr->fib6; |
76610ebb IS |
732 | } |
733 | return NULL; | |
734 | } | |
735 | ||
6b75c480 | 736 | static struct mlxsw_sp_vr *mlxsw_sp_vr_create(struct mlxsw_sp *mlxsw_sp, |
f8fa9b4e DA |
737 | u32 tb_id, |
738 | struct netlink_ext_ack *extack) | |
6b75c480 | 739 | { |
6b75c480 | 740 | struct mlxsw_sp_vr *vr; |
a3d9bc50 | 741 | int err; |
6b75c480 JP |
742 | |
743 | vr = mlxsw_sp_vr_find_unused(mlxsw_sp); | |
f8fa9b4e DA |
744 | if (!vr) { |
745 | NL_SET_ERR_MSG(extack, "spectrum: Exceeded number of supported virtual routers"); | |
6b75c480 | 746 | return ERR_PTR(-EBUSY); |
f8fa9b4e | 747 | } |
76610ebb IS |
748 | vr->fib4 = mlxsw_sp_fib_create(vr, MLXSW_SP_L3_PROTO_IPV4); |
749 | if (IS_ERR(vr->fib4)) | |
750 | return ERR_CAST(vr->fib4); | |
a3d9bc50 IS |
751 | vr->fib6 = mlxsw_sp_fib_create(vr, MLXSW_SP_L3_PROTO_IPV6); |
752 | if (IS_ERR(vr->fib6)) { | |
753 | err = PTR_ERR(vr->fib6); | |
754 | goto err_fib6_create; | |
755 | } | |
d42b0965 YG |
756 | vr->mr4_table = mlxsw_sp_mr_table_create(mlxsw_sp, vr->id, |
757 | MLXSW_SP_L3_PROTO_IPV4); | |
758 | if (IS_ERR(vr->mr4_table)) { | |
759 | err = PTR_ERR(vr->mr4_table); | |
760 | goto err_mr_table_create; | |
761 | } | |
6b75c480 | 762 | vr->tb_id = tb_id; |
6b75c480 | 763 | return vr; |
a3d9bc50 | 764 | |
d42b0965 YG |
765 | err_mr_table_create: |
766 | mlxsw_sp_fib_destroy(vr->fib6); | |
767 | vr->fib6 = NULL; | |
a3d9bc50 IS |
768 | err_fib6_create: |
769 | mlxsw_sp_fib_destroy(vr->fib4); | |
770 | vr->fib4 = NULL; | |
771 | return ERR_PTR(err); | |
6b75c480 JP |
772 | } |
773 | ||
76610ebb | 774 | static void mlxsw_sp_vr_destroy(struct mlxsw_sp_vr *vr) |
6b75c480 | 775 | { |
d42b0965 YG |
776 | mlxsw_sp_mr_table_destroy(vr->mr4_table); |
777 | vr->mr4_table = NULL; | |
a3d9bc50 IS |
778 | mlxsw_sp_fib_destroy(vr->fib6); |
779 | vr->fib6 = NULL; | |
76610ebb IS |
780 | mlxsw_sp_fib_destroy(vr->fib4); |
781 | vr->fib4 = NULL; | |
6b75c480 JP |
782 | } |
783 | ||
f8fa9b4e DA |
784 | static struct mlxsw_sp_vr *mlxsw_sp_vr_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id, |
785 | struct netlink_ext_ack *extack) | |
6b75c480 JP |
786 | { |
787 | struct mlxsw_sp_vr *vr; | |
6b75c480 JP |
788 | |
789 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
76610ebb IS |
790 | vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id); |
791 | if (!vr) | |
f8fa9b4e | 792 | vr = mlxsw_sp_vr_create(mlxsw_sp, tb_id, extack); |
6b75c480 JP |
793 | return vr; |
794 | } | |
795 | ||
76610ebb | 796 | static void mlxsw_sp_vr_put(struct mlxsw_sp_vr *vr) |
6b75c480 | 797 | { |
a3d9bc50 | 798 | if (!vr->rif_count && list_empty(&vr->fib4->node_list) && |
d42b0965 YG |
799 | list_empty(&vr->fib6->node_list) && |
800 | mlxsw_sp_mr_table_empty(vr->mr4_table)) | |
76610ebb | 801 | mlxsw_sp_vr_destroy(vr); |
6b75c480 JP |
802 | } |
803 | ||
fc922bb0 IS |
804 | static bool |
805 | mlxsw_sp_vr_lpm_tree_should_replace(struct mlxsw_sp_vr *vr, | |
806 | enum mlxsw_sp_l3proto proto, u8 tree_id) | |
807 | { | |
808 | struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); | |
809 | ||
810 | if (!mlxsw_sp_vr_is_used(vr)) | |
811 | return false; | |
812 | if (fib->lpm_tree && fib->lpm_tree->id == tree_id) | |
813 | return true; | |
814 | return false; | |
815 | } | |
816 | ||
817 | static int mlxsw_sp_vr_lpm_tree_replace(struct mlxsw_sp *mlxsw_sp, | |
818 | struct mlxsw_sp_fib *fib, | |
819 | struct mlxsw_sp_lpm_tree *new_tree) | |
820 | { | |
821 | struct mlxsw_sp_lpm_tree *old_tree = fib->lpm_tree; | |
822 | int err; | |
823 | ||
824 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib, new_tree->id); | |
825 | if (err) | |
826 | return err; | |
827 | fib->lpm_tree = new_tree; | |
828 | mlxsw_sp_lpm_tree_hold(new_tree); | |
829 | mlxsw_sp_lpm_tree_put(mlxsw_sp, old_tree); | |
830 | return 0; | |
831 | } | |
832 | ||
833 | static int mlxsw_sp_vrs_lpm_tree_replace(struct mlxsw_sp *mlxsw_sp, | |
834 | struct mlxsw_sp_fib *fib, | |
835 | struct mlxsw_sp_lpm_tree *new_tree) | |
836 | { | |
837 | struct mlxsw_sp_lpm_tree *old_tree = fib->lpm_tree; | |
838 | enum mlxsw_sp_l3proto proto = fib->proto; | |
839 | u8 old_id, new_id = new_tree->id; | |
840 | struct mlxsw_sp_vr *vr; | |
841 | int i, err; | |
842 | ||
843 | if (!old_tree) | |
844 | goto no_replace; | |
845 | old_id = old_tree->id; | |
846 | ||
847 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { | |
848 | vr = &mlxsw_sp->router->vrs[i]; | |
849 | if (!mlxsw_sp_vr_lpm_tree_should_replace(vr, proto, old_id)) | |
850 | continue; | |
851 | err = mlxsw_sp_vr_lpm_tree_replace(mlxsw_sp, | |
852 | mlxsw_sp_vr_fib(vr, proto), | |
853 | new_tree); | |
854 | if (err) | |
855 | goto err_tree_replace; | |
856 | } | |
857 | ||
858 | return 0; | |
859 | ||
860 | err_tree_replace: | |
861 | for (i--; i >= 0; i--) { | |
862 | if (!mlxsw_sp_vr_lpm_tree_should_replace(vr, proto, new_id)) | |
863 | continue; | |
864 | mlxsw_sp_vr_lpm_tree_replace(mlxsw_sp, | |
865 | mlxsw_sp_vr_fib(vr, proto), | |
866 | old_tree); | |
867 | } | |
868 | return err; | |
869 | ||
870 | no_replace: | |
871 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib, new_tree->id); | |
872 | if (err) | |
873 | return err; | |
874 | fib->lpm_tree = new_tree; | |
875 | mlxsw_sp_lpm_tree_hold(new_tree); | |
876 | return 0; | |
877 | } | |
878 | ||
879 | static void | |
880 | mlxsw_sp_vrs_prefixes(struct mlxsw_sp *mlxsw_sp, | |
881 | enum mlxsw_sp_l3proto proto, | |
882 | struct mlxsw_sp_prefix_usage *req_prefix_usage) | |
883 | { | |
884 | int i; | |
885 | ||
886 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { | |
887 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; | |
888 | struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); | |
889 | unsigned char prefix; | |
890 | ||
891 | if (!mlxsw_sp_vr_is_used(vr)) | |
892 | continue; | |
893 | mlxsw_sp_prefix_usage_for_each(prefix, &fib->prefix_usage) | |
894 | mlxsw_sp_prefix_usage_set(req_prefix_usage, prefix); | |
895 | } | |
896 | } | |
897 | ||
9497c042 | 898 | static int mlxsw_sp_vrs_init(struct mlxsw_sp *mlxsw_sp) |
6b75c480 JP |
899 | { |
900 | struct mlxsw_sp_vr *vr; | |
c1a38311 | 901 | u64 max_vrs; |
6b75c480 JP |
902 | int i; |
903 | ||
c1a38311 | 904 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_VRS)) |
9497c042 NF |
905 | return -EIO; |
906 | ||
c1a38311 | 907 | max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); |
9011b677 IS |
908 | mlxsw_sp->router->vrs = kcalloc(max_vrs, sizeof(struct mlxsw_sp_vr), |
909 | GFP_KERNEL); | |
910 | if (!mlxsw_sp->router->vrs) | |
9497c042 NF |
911 | return -ENOMEM; |
912 | ||
c1a38311 | 913 | for (i = 0; i < max_vrs; i++) { |
9011b677 | 914 | vr = &mlxsw_sp->router->vrs[i]; |
6b75c480 JP |
915 | vr->id = i; |
916 | } | |
9497c042 NF |
917 | |
918 | return 0; | |
919 | } | |
920 | ||
ac571de9 IS |
921 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp); |
922 | ||
9497c042 NF |
923 | static void mlxsw_sp_vrs_fini(struct mlxsw_sp *mlxsw_sp) |
924 | { | |
3057224e IS |
925 | /* At this stage we're guaranteed not to have new incoming |
926 | * FIB notifications and the work queue is free from FIBs | |
927 | * sitting on top of mlxsw netdevs. However, we can still | |
928 | * have other FIBs queued. Flush the queue before flushing | |
929 | * the device's tables. No need for locks, as we're the only | |
930 | * writer. | |
931 | */ | |
932 | mlxsw_core_flush_owq(); | |
ac571de9 | 933 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
9011b677 | 934 | kfree(mlxsw_sp->router->vrs); |
6b75c480 JP |
935 | } |
936 | ||
6ddb7426 PM |
937 | static struct net_device * |
938 | __mlxsw_sp_ipip_netdev_ul_dev_get(const struct net_device *ol_dev) | |
939 | { | |
940 | struct ip_tunnel *tun = netdev_priv(ol_dev); | |
941 | struct net *net = dev_net(ol_dev); | |
942 | ||
943 | return __dev_get_by_index(net, tun->parms.link); | |
944 | } | |
945 | ||
4cf04f3f | 946 | u32 mlxsw_sp_ipip_dev_ul_tb_id(const struct net_device *ol_dev) |
6ddb7426 PM |
947 | { |
948 | struct net_device *d = __mlxsw_sp_ipip_netdev_ul_dev_get(ol_dev); | |
949 | ||
950 | if (d) | |
951 | return l3mdev_fib_table(d) ? : RT_TABLE_MAIN; | |
952 | else | |
953 | return l3mdev_fib_table(ol_dev) ? : RT_TABLE_MAIN; | |
954 | } | |
955 | ||
1012b9ac PM |
956 | static struct mlxsw_sp_rif * |
957 | mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp, | |
f8fa9b4e DA |
958 | const struct mlxsw_sp_rif_params *params, |
959 | struct netlink_ext_ack *extack); | |
1012b9ac PM |
960 | |
961 | static struct mlxsw_sp_rif_ipip_lb * | |
962 | mlxsw_sp_ipip_ol_ipip_lb_create(struct mlxsw_sp *mlxsw_sp, | |
963 | enum mlxsw_sp_ipip_type ipipt, | |
7e75af63 PM |
964 | struct net_device *ol_dev, |
965 | struct netlink_ext_ack *extack) | |
1012b9ac PM |
966 | { |
967 | struct mlxsw_sp_rif_params_ipip_lb lb_params; | |
968 | const struct mlxsw_sp_ipip_ops *ipip_ops; | |
969 | struct mlxsw_sp_rif *rif; | |
970 | ||
971 | ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipipt]; | |
972 | lb_params = (struct mlxsw_sp_rif_params_ipip_lb) { | |
973 | .common.dev = ol_dev, | |
974 | .common.lag = false, | |
975 | .lb_config = ipip_ops->ol_loopback_config(mlxsw_sp, ol_dev), | |
976 | }; | |
977 | ||
7e75af63 | 978 | rif = mlxsw_sp_rif_create(mlxsw_sp, &lb_params.common, extack); |
1012b9ac PM |
979 | if (IS_ERR(rif)) |
980 | return ERR_CAST(rif); | |
981 | return container_of(rif, struct mlxsw_sp_rif_ipip_lb, common); | |
982 | } | |
983 | ||
984 | static struct mlxsw_sp_ipip_entry * | |
985 | mlxsw_sp_ipip_entry_alloc(struct mlxsw_sp *mlxsw_sp, | |
986 | enum mlxsw_sp_ipip_type ipipt, | |
987 | struct net_device *ol_dev) | |
988 | { | |
989 | struct mlxsw_sp_ipip_entry *ipip_entry; | |
990 | struct mlxsw_sp_ipip_entry *ret = NULL; | |
991 | ||
992 | ipip_entry = kzalloc(sizeof(*ipip_entry), GFP_KERNEL); | |
993 | if (!ipip_entry) | |
994 | return ERR_PTR(-ENOMEM); | |
995 | ||
996 | ipip_entry->ol_lb = mlxsw_sp_ipip_ol_ipip_lb_create(mlxsw_sp, ipipt, | |
7e75af63 | 997 | ol_dev, NULL); |
1012b9ac PM |
998 | if (IS_ERR(ipip_entry->ol_lb)) { |
999 | ret = ERR_CAST(ipip_entry->ol_lb); | |
1000 | goto err_ol_ipip_lb_create; | |
1001 | } | |
1002 | ||
1003 | ipip_entry->ipipt = ipipt; | |
1004 | ipip_entry->ol_dev = ol_dev; | |
4cf04f3f | 1005 | ipip_entry->parms = mlxsw_sp_ipip_netdev_parms(ol_dev); |
1012b9ac PM |
1006 | |
1007 | return ipip_entry; | |
1008 | ||
1009 | err_ol_ipip_lb_create: | |
1010 | kfree(ipip_entry); | |
1011 | return ret; | |
1012 | } | |
1013 | ||
1014 | static void | |
4cccb737 | 1015 | mlxsw_sp_ipip_entry_dealloc(struct mlxsw_sp_ipip_entry *ipip_entry) |
1012b9ac | 1016 | { |
1012b9ac PM |
1017 | mlxsw_sp_rif_destroy(&ipip_entry->ol_lb->common); |
1018 | kfree(ipip_entry); | |
1019 | } | |
1020 | ||
1012b9ac PM |
1021 | static bool |
1022 | mlxsw_sp_ipip_entry_saddr_matches(struct mlxsw_sp *mlxsw_sp, | |
1023 | const enum mlxsw_sp_l3proto ul_proto, | |
1024 | union mlxsw_sp_l3addr saddr, | |
1025 | u32 ul_tb_id, | |
1026 | struct mlxsw_sp_ipip_entry *ipip_entry) | |
1027 | { | |
1028 | u32 tun_ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(ipip_entry->ol_dev); | |
1029 | enum mlxsw_sp_ipip_type ipipt = ipip_entry->ipipt; | |
1030 | union mlxsw_sp_l3addr tun_saddr; | |
1031 | ||
1032 | if (mlxsw_sp->router->ipip_ops_arr[ipipt]->ul_proto != ul_proto) | |
1033 | return false; | |
1034 | ||
1035 | tun_saddr = mlxsw_sp_ipip_netdev_saddr(ul_proto, ipip_entry->ol_dev); | |
1036 | return tun_ul_tb_id == ul_tb_id && | |
1037 | mlxsw_sp_l3addr_eq(&tun_saddr, &saddr); | |
1038 | } | |
1039 | ||
4607f6d2 PM |
1040 | static int |
1041 | mlxsw_sp_fib_entry_decap_init(struct mlxsw_sp *mlxsw_sp, | |
1042 | struct mlxsw_sp_fib_entry *fib_entry, | |
1043 | struct mlxsw_sp_ipip_entry *ipip_entry) | |
1044 | { | |
1045 | u32 tunnel_index; | |
1046 | int err; | |
1047 | ||
1048 | err = mlxsw_sp_kvdl_alloc(mlxsw_sp, 1, &tunnel_index); | |
1049 | if (err) | |
1050 | return err; | |
1051 | ||
1052 | ipip_entry->decap_fib_entry = fib_entry; | |
1053 | fib_entry->decap.ipip_entry = ipip_entry; | |
1054 | fib_entry->decap.tunnel_index = tunnel_index; | |
1055 | return 0; | |
1056 | } | |
1057 | ||
1058 | static void mlxsw_sp_fib_entry_decap_fini(struct mlxsw_sp *mlxsw_sp, | |
1059 | struct mlxsw_sp_fib_entry *fib_entry) | |
1060 | { | |
1061 | /* Unlink this node from the IPIP entry that it's the decap entry of. */ | |
1062 | fib_entry->decap.ipip_entry->decap_fib_entry = NULL; | |
1063 | fib_entry->decap.ipip_entry = NULL; | |
1064 | mlxsw_sp_kvdl_free(mlxsw_sp, fib_entry->decap.tunnel_index); | |
1065 | } | |
1066 | ||
1cc38fb1 PM |
1067 | static struct mlxsw_sp_fib_node * |
1068 | mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr, | |
1069 | size_t addr_len, unsigned char prefix_len); | |
4607f6d2 PM |
1070 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, |
1071 | struct mlxsw_sp_fib_entry *fib_entry); | |
1072 | ||
1073 | static void | |
1074 | mlxsw_sp_ipip_entry_demote_decap(struct mlxsw_sp *mlxsw_sp, | |
1075 | struct mlxsw_sp_ipip_entry *ipip_entry) | |
1076 | { | |
1077 | struct mlxsw_sp_fib_entry *fib_entry = ipip_entry->decap_fib_entry; | |
1078 | ||
1079 | mlxsw_sp_fib_entry_decap_fini(mlxsw_sp, fib_entry); | |
1080 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; | |
1081 | ||
1082 | mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
1083 | } | |
1084 | ||
1cc38fb1 PM |
1085 | static void |
1086 | mlxsw_sp_ipip_entry_promote_decap(struct mlxsw_sp *mlxsw_sp, | |
1087 | struct mlxsw_sp_ipip_entry *ipip_entry, | |
1088 | struct mlxsw_sp_fib_entry *decap_fib_entry) | |
1089 | { | |
1090 | if (mlxsw_sp_fib_entry_decap_init(mlxsw_sp, decap_fib_entry, | |
1091 | ipip_entry)) | |
1092 | return; | |
1093 | decap_fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP; | |
1094 | ||
1095 | if (mlxsw_sp_fib_entry_update(mlxsw_sp, decap_fib_entry)) | |
1096 | mlxsw_sp_ipip_entry_demote_decap(mlxsw_sp, ipip_entry); | |
1097 | } | |
1098 | ||
1099 | /* Given an IPIP entry, find the corresponding decap route. */ | |
1100 | static struct mlxsw_sp_fib_entry * | |
1101 | mlxsw_sp_ipip_entry_find_decap(struct mlxsw_sp *mlxsw_sp, | |
1102 | struct mlxsw_sp_ipip_entry *ipip_entry) | |
1103 | { | |
1104 | static struct mlxsw_sp_fib_node *fib_node; | |
1105 | const struct mlxsw_sp_ipip_ops *ipip_ops; | |
1106 | struct mlxsw_sp_fib_entry *fib_entry; | |
1107 | unsigned char saddr_prefix_len; | |
1108 | union mlxsw_sp_l3addr saddr; | |
1109 | struct mlxsw_sp_fib *ul_fib; | |
1110 | struct mlxsw_sp_vr *ul_vr; | |
1111 | const void *saddrp; | |
1112 | size_t saddr_len; | |
1113 | u32 ul_tb_id; | |
1114 | u32 saddr4; | |
1115 | ||
1116 | ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt]; | |
1117 | ||
1118 | ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(ipip_entry->ol_dev); | |
1119 | ul_vr = mlxsw_sp_vr_find(mlxsw_sp, ul_tb_id); | |
1120 | if (!ul_vr) | |
1121 | return NULL; | |
1122 | ||
1123 | ul_fib = mlxsw_sp_vr_fib(ul_vr, ipip_ops->ul_proto); | |
1124 | saddr = mlxsw_sp_ipip_netdev_saddr(ipip_ops->ul_proto, | |
1125 | ipip_entry->ol_dev); | |
1126 | ||
1127 | switch (ipip_ops->ul_proto) { | |
1128 | case MLXSW_SP_L3_PROTO_IPV4: | |
1129 | saddr4 = be32_to_cpu(saddr.addr4); | |
1130 | saddrp = &saddr4; | |
1131 | saddr_len = 4; | |
1132 | saddr_prefix_len = 32; | |
1133 | break; | |
1134 | case MLXSW_SP_L3_PROTO_IPV6: | |
1135 | WARN_ON(1); | |
1136 | return NULL; | |
1137 | } | |
1138 | ||
1139 | fib_node = mlxsw_sp_fib_node_lookup(ul_fib, saddrp, saddr_len, | |
1140 | saddr_prefix_len); | |
1141 | if (!fib_node || list_empty(&fib_node->entry_list)) | |
1142 | return NULL; | |
1143 | ||
1144 | fib_entry = list_first_entry(&fib_node->entry_list, | |
1145 | struct mlxsw_sp_fib_entry, list); | |
1146 | if (fib_entry->type != MLXSW_SP_FIB_ENTRY_TYPE_TRAP) | |
1147 | return NULL; | |
1148 | ||
1149 | return fib_entry; | |
1150 | } | |
1151 | ||
1012b9ac | 1152 | static struct mlxsw_sp_ipip_entry * |
4cccb737 PM |
1153 | mlxsw_sp_ipip_entry_create(struct mlxsw_sp *mlxsw_sp, |
1154 | enum mlxsw_sp_ipip_type ipipt, | |
1155 | struct net_device *ol_dev) | |
1012b9ac | 1156 | { |
1012b9ac | 1157 | struct mlxsw_sp_ipip_entry *ipip_entry; |
1012b9ac PM |
1158 | |
1159 | ipip_entry = mlxsw_sp_ipip_entry_alloc(mlxsw_sp, ipipt, ol_dev); | |
1160 | if (IS_ERR(ipip_entry)) | |
1161 | return ipip_entry; | |
1162 | ||
1163 | list_add_tail(&ipip_entry->ipip_list_node, | |
1164 | &mlxsw_sp->router->ipip_list); | |
1165 | ||
1012b9ac PM |
1166 | return ipip_entry; |
1167 | } | |
1168 | ||
1169 | static void | |
4cccb737 PM |
1170 | mlxsw_sp_ipip_entry_destroy(struct mlxsw_sp *mlxsw_sp, |
1171 | struct mlxsw_sp_ipip_entry *ipip_entry) | |
1012b9ac | 1172 | { |
4cccb737 PM |
1173 | list_del(&ipip_entry->ipip_list_node); |
1174 | mlxsw_sp_ipip_entry_dealloc(ipip_entry); | |
1012b9ac PM |
1175 | } |
1176 | ||
4607f6d2 PM |
1177 | static bool |
1178 | mlxsw_sp_ipip_entry_matches_decap(struct mlxsw_sp *mlxsw_sp, | |
1179 | const struct net_device *ul_dev, | |
1180 | enum mlxsw_sp_l3proto ul_proto, | |
1181 | union mlxsw_sp_l3addr ul_dip, | |
1182 | struct mlxsw_sp_ipip_entry *ipip_entry) | |
1183 | { | |
1184 | u32 ul_tb_id = l3mdev_fib_table(ul_dev) ? : RT_TABLE_MAIN; | |
1185 | enum mlxsw_sp_ipip_type ipipt = ipip_entry->ipipt; | |
1186 | struct net_device *ipip_ul_dev; | |
1187 | ||
1188 | if (mlxsw_sp->router->ipip_ops_arr[ipipt]->ul_proto != ul_proto) | |
1189 | return false; | |
1190 | ||
1191 | ipip_ul_dev = __mlxsw_sp_ipip_netdev_ul_dev_get(ipip_entry->ol_dev); | |
1192 | return mlxsw_sp_ipip_entry_saddr_matches(mlxsw_sp, ul_proto, ul_dip, | |
1193 | ul_tb_id, ipip_entry) && | |
1194 | (!ipip_ul_dev || ipip_ul_dev == ul_dev); | |
1195 | } | |
1196 | ||
1197 | /* Given decap parameters, find the corresponding IPIP entry. */ | |
1198 | static struct mlxsw_sp_ipip_entry * | |
1199 | mlxsw_sp_ipip_entry_find_by_decap(struct mlxsw_sp *mlxsw_sp, | |
1200 | const struct net_device *ul_dev, | |
1201 | enum mlxsw_sp_l3proto ul_proto, | |
1202 | union mlxsw_sp_l3addr ul_dip) | |
1203 | { | |
1204 | struct mlxsw_sp_ipip_entry *ipip_entry; | |
1205 | ||
1206 | list_for_each_entry(ipip_entry, &mlxsw_sp->router->ipip_list, | |
1207 | ipip_list_node) | |
1208 | if (mlxsw_sp_ipip_entry_matches_decap(mlxsw_sp, ul_dev, | |
1209 | ul_proto, ul_dip, | |
1210 | ipip_entry)) | |
1211 | return ipip_entry; | |
1212 | ||
1213 | return NULL; | |
1214 | } | |
1215 | ||
6698c168 PM |
1216 | static bool mlxsw_sp_netdev_ipip_type(const struct mlxsw_sp *mlxsw_sp, |
1217 | const struct net_device *dev, | |
1218 | enum mlxsw_sp_ipip_type *p_type) | |
1219 | { | |
1220 | struct mlxsw_sp_router *router = mlxsw_sp->router; | |
1221 | const struct mlxsw_sp_ipip_ops *ipip_ops; | |
1222 | enum mlxsw_sp_ipip_type ipipt; | |
1223 | ||
1224 | for (ipipt = 0; ipipt < MLXSW_SP_IPIP_TYPE_MAX; ++ipipt) { | |
1225 | ipip_ops = router->ipip_ops_arr[ipipt]; | |
1226 | if (dev->type == ipip_ops->dev_type) { | |
1227 | if (p_type) | |
1228 | *p_type = ipipt; | |
1229 | return true; | |
1230 | } | |
1231 | } | |
1232 | return false; | |
1233 | } | |
1234 | ||
796ec776 PM |
1235 | bool mlxsw_sp_netdev_is_ipip_ol(const struct mlxsw_sp *mlxsw_sp, |
1236 | const struct net_device *dev) | |
0063587d PM |
1237 | { |
1238 | return mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, NULL); | |
1239 | } | |
1240 | ||
1241 | static struct mlxsw_sp_ipip_entry * | |
1242 | mlxsw_sp_ipip_entry_find_by_ol_dev(struct mlxsw_sp *mlxsw_sp, | |
1243 | const struct net_device *ol_dev) | |
1244 | { | |
1245 | struct mlxsw_sp_ipip_entry *ipip_entry; | |
1246 | ||
1247 | list_for_each_entry(ipip_entry, &mlxsw_sp->router->ipip_list, | |
1248 | ipip_list_node) | |
1249 | if (ipip_entry->ol_dev == ol_dev) | |
1250 | return ipip_entry; | |
1251 | ||
1252 | return NULL; | |
1253 | } | |
1254 | ||
61481f2f PM |
1255 | static struct mlxsw_sp_ipip_entry * |
1256 | mlxsw_sp_ipip_entry_find_by_ul_dev(const struct mlxsw_sp *mlxsw_sp, | |
1257 | const struct net_device *ul_dev, | |
1258 | struct mlxsw_sp_ipip_entry *start) | |
1259 | { | |
1260 | struct mlxsw_sp_ipip_entry *ipip_entry; | |
1261 | ||
1262 | ipip_entry = list_prepare_entry(start, &mlxsw_sp->router->ipip_list, | |
1263 | ipip_list_node); | |
1264 | list_for_each_entry_continue(ipip_entry, &mlxsw_sp->router->ipip_list, | |
1265 | ipip_list_node) { | |
1266 | struct net_device *ipip_ul_dev = | |
1267 | __mlxsw_sp_ipip_netdev_ul_dev_get(ipip_entry->ol_dev); | |
1268 | ||
1269 | if (ipip_ul_dev == ul_dev) | |
1270 | return ipip_entry; | |
1271 | } | |
1272 | ||
1273 | return NULL; | |
1274 | } | |
1275 | ||
1276 | bool mlxsw_sp_netdev_is_ipip_ul(const struct mlxsw_sp *mlxsw_sp, | |
1277 | const struct net_device *dev) | |
1278 | { | |
1279 | return mlxsw_sp_ipip_entry_find_by_ul_dev(mlxsw_sp, dev, NULL); | |
1280 | } | |
1281 | ||
cafdb2a0 PM |
1282 | static bool mlxsw_sp_netdevice_ipip_can_offload(struct mlxsw_sp *mlxsw_sp, |
1283 | const struct net_device *ol_dev, | |
1284 | enum mlxsw_sp_ipip_type ipipt) | |
1285 | { | |
1286 | const struct mlxsw_sp_ipip_ops *ops | |
1287 | = mlxsw_sp->router->ipip_ops_arr[ipipt]; | |
1288 | ||
1289 | /* For deciding whether decap should be offloaded, we don't care about | |
1290 | * overlay protocol, so ask whether either one is supported. | |
1291 | */ | |
1292 | return ops->can_offload(mlxsw_sp, ol_dev, MLXSW_SP_L3_PROTO_IPV4) || | |
1293 | ops->can_offload(mlxsw_sp, ol_dev, MLXSW_SP_L3_PROTO_IPV6); | |
1294 | } | |
1295 | ||
796ec776 PM |
1296 | static int mlxsw_sp_netdevice_ipip_ol_reg_event(struct mlxsw_sp *mlxsw_sp, |
1297 | struct net_device *ol_dev) | |
0063587d | 1298 | { |
0063587d | 1299 | struct mlxsw_sp_ipip_entry *ipip_entry; |
af641713 | 1300 | enum mlxsw_sp_l3proto ul_proto; |
0063587d | 1301 | enum mlxsw_sp_ipip_type ipipt; |
af641713 PM |
1302 | union mlxsw_sp_l3addr saddr; |
1303 | u32 ul_tb_id; | |
0063587d PM |
1304 | |
1305 | mlxsw_sp_netdev_ipip_type(mlxsw_sp, ol_dev, &ipipt); | |
cafdb2a0 | 1306 | if (mlxsw_sp_netdevice_ipip_can_offload(mlxsw_sp, ol_dev, ipipt)) { |
af641713 PM |
1307 | ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(ol_dev); |
1308 | ul_proto = mlxsw_sp->router->ipip_ops_arr[ipipt]->ul_proto; | |
1309 | saddr = mlxsw_sp_ipip_netdev_saddr(ul_proto, ol_dev); | |
1310 | if (!mlxsw_sp_ipip_demote_tunnel_by_saddr(mlxsw_sp, ul_proto, | |
1311 | saddr, ul_tb_id, | |
1312 | NULL)) { | |
1313 | ipip_entry = mlxsw_sp_ipip_entry_create(mlxsw_sp, ipipt, | |
1314 | ol_dev); | |
1315 | if (IS_ERR(ipip_entry)) | |
1316 | return PTR_ERR(ipip_entry); | |
1317 | } | |
0063587d PM |
1318 | } |
1319 | ||
1320 | return 0; | |
1321 | } | |
1322 | ||
796ec776 PM |
1323 | static void mlxsw_sp_netdevice_ipip_ol_unreg_event(struct mlxsw_sp *mlxsw_sp, |
1324 | struct net_device *ol_dev) | |
0063587d PM |
1325 | { |
1326 | struct mlxsw_sp_ipip_entry *ipip_entry; | |
1327 | ||
1328 | ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); | |
1329 | if (ipip_entry) | |
4cccb737 | 1330 | mlxsw_sp_ipip_entry_destroy(mlxsw_sp, ipip_entry); |
0063587d PM |
1331 | } |
1332 | ||
47518ca5 PM |
1333 | static void |
1334 | mlxsw_sp_ipip_entry_ol_up_event(struct mlxsw_sp *mlxsw_sp, | |
1335 | struct mlxsw_sp_ipip_entry *ipip_entry) | |
1336 | { | |
1337 | struct mlxsw_sp_fib_entry *decap_fib_entry; | |
1338 | ||
1339 | decap_fib_entry = mlxsw_sp_ipip_entry_find_decap(mlxsw_sp, ipip_entry); | |
1340 | if (decap_fib_entry) | |
1341 | mlxsw_sp_ipip_entry_promote_decap(mlxsw_sp, ipip_entry, | |
1342 | decap_fib_entry); | |
1343 | } | |
1344 | ||
6d4de445 PM |
1345 | static void mlxsw_sp_netdevice_ipip_ol_up_event(struct mlxsw_sp *mlxsw_sp, |
1346 | struct net_device *ol_dev) | |
0063587d | 1347 | { |
0063587d PM |
1348 | struct mlxsw_sp_ipip_entry *ipip_entry; |
1349 | ||
1350 | ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); | |
47518ca5 PM |
1351 | if (ipip_entry) |
1352 | mlxsw_sp_ipip_entry_ol_up_event(mlxsw_sp, ipip_entry); | |
0063587d PM |
1353 | } |
1354 | ||
a3fe198e PM |
1355 | static void |
1356 | mlxsw_sp_ipip_entry_ol_down_event(struct mlxsw_sp *mlxsw_sp, | |
1357 | struct mlxsw_sp_ipip_entry *ipip_entry) | |
1358 | { | |
1359 | if (ipip_entry->decap_fib_entry) | |
1360 | mlxsw_sp_ipip_entry_demote_decap(mlxsw_sp, ipip_entry); | |
1361 | } | |
1362 | ||
796ec776 PM |
1363 | static void mlxsw_sp_netdevice_ipip_ol_down_event(struct mlxsw_sp *mlxsw_sp, |
1364 | struct net_device *ol_dev) | |
0063587d PM |
1365 | { |
1366 | struct mlxsw_sp_ipip_entry *ipip_entry; | |
1367 | ||
1368 | ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); | |
a3fe198e PM |
1369 | if (ipip_entry) |
1370 | mlxsw_sp_ipip_entry_ol_down_event(mlxsw_sp, ipip_entry); | |
0063587d PM |
1371 | } |
1372 | ||
0c5f1cd5 PM |
1373 | static void mlxsw_sp_nexthop_rif_update(struct mlxsw_sp *mlxsw_sp, |
1374 | struct mlxsw_sp_rif *rif); | |
65a6121b PM |
1375 | static int |
1376 | mlxsw_sp_ipip_entry_ol_lb_update(struct mlxsw_sp *mlxsw_sp, | |
1377 | struct mlxsw_sp_ipip_entry *ipip_entry, | |
0c5f1cd5 | 1378 | bool keep_encap, |
65a6121b PM |
1379 | struct netlink_ext_ack *extack) |
1380 | { | |
1381 | struct mlxsw_sp_rif_ipip_lb *old_lb_rif = ipip_entry->ol_lb; | |
1382 | struct mlxsw_sp_rif_ipip_lb *new_lb_rif; | |
1383 | ||
1384 | new_lb_rif = mlxsw_sp_ipip_ol_ipip_lb_create(mlxsw_sp, | |
1385 | ipip_entry->ipipt, | |
1386 | ipip_entry->ol_dev, | |
1387 | extack); | |
1388 | if (IS_ERR(new_lb_rif)) | |
1389 | return PTR_ERR(new_lb_rif); | |
1390 | ipip_entry->ol_lb = new_lb_rif; | |
0c5f1cd5 PM |
1391 | |
1392 | if (keep_encap) { | |
1393 | list_splice_init(&old_lb_rif->common.nexthop_list, | |
1394 | &new_lb_rif->common.nexthop_list); | |
1395 | mlxsw_sp_nexthop_rif_update(mlxsw_sp, &new_lb_rif->common); | |
1396 | } | |
1397 | ||
65a6121b | 1398 | mlxsw_sp_rif_destroy(&old_lb_rif->common); |
f63ce4e5 | 1399 | |
65a6121b PM |
1400 | return 0; |
1401 | } | |
1402 | ||
0c5f1cd5 PM |
1403 | /** |
1404 | * Update the offload related to an IPIP entry. This always updates decap, and | |
1405 | * in addition to that it also: | |
1406 | * @recreate_loopback: recreates the associated loopback RIF | |
1407 | * @keep_encap: updates next hops that use the tunnel netdevice. This is only | |
1408 | * relevant when recreate_loopback is true. | |
1409 | * @update_nexthops: updates next hops, keeping the current loopback RIF. This | |
1410 | * is only relevant when recreate_loopback is false. | |
1411 | */ | |
65a6121b PM |
1412 | int __mlxsw_sp_ipip_entry_update_tunnel(struct mlxsw_sp *mlxsw_sp, |
1413 | struct mlxsw_sp_ipip_entry *ipip_entry, | |
0c5f1cd5 PM |
1414 | bool recreate_loopback, |
1415 | bool keep_encap, | |
1416 | bool update_nexthops, | |
65a6121b PM |
1417 | struct netlink_ext_ack *extack) |
1418 | { | |
1419 | int err; | |
f63ce4e5 | 1420 | |
65a6121b PM |
1421 | /* RIFs can't be edited, so to update loopback, we need to destroy and |
1422 | * recreate it. That creates a window of opportunity where RALUE and | |
1423 | * RATR registers end up referencing a RIF that's already gone. RATRs | |
1424 | * are handled in mlxsw_sp_ipip_entry_ol_lb_update(), and to take care | |
f63ce4e5 PM |
1425 | * of RALUE, demote the decap route back. |
1426 | */ | |
1427 | if (ipip_entry->decap_fib_entry) | |
1428 | mlxsw_sp_ipip_entry_demote_decap(mlxsw_sp, ipip_entry); | |
1429 | ||
0c5f1cd5 PM |
1430 | if (recreate_loopback) { |
1431 | err = mlxsw_sp_ipip_entry_ol_lb_update(mlxsw_sp, ipip_entry, | |
1432 | keep_encap, extack); | |
1433 | if (err) | |
1434 | return err; | |
1435 | } else if (update_nexthops) { | |
1436 | mlxsw_sp_nexthop_rif_update(mlxsw_sp, | |
1437 | &ipip_entry->ol_lb->common); | |
1438 | } | |
65a6121b PM |
1439 | |
1440 | if (ipip_entry->ol_dev->flags & IFF_UP) | |
1441 | mlxsw_sp_ipip_entry_ol_up_event(mlxsw_sp, ipip_entry); | |
f63ce4e5 PM |
1442 | |
1443 | return 0; | |
1444 | } | |
1445 | ||
65a6121b PM |
1446 | static int mlxsw_sp_netdevice_ipip_ol_vrf_event(struct mlxsw_sp *mlxsw_sp, |
1447 | struct net_device *ol_dev, | |
1448 | struct netlink_ext_ack *extack) | |
1449 | { | |
1450 | struct mlxsw_sp_ipip_entry *ipip_entry = | |
1451 | mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); | |
1452 | ||
1453 | if (!ipip_entry) | |
1454 | return 0; | |
1455 | return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry, | |
0c5f1cd5 | 1456 | true, false, false, extack); |
65a6121b PM |
1457 | } |
1458 | ||
61481f2f PM |
1459 | static int |
1460 | mlxsw_sp_netdevice_ipip_ul_vrf_event(struct mlxsw_sp *mlxsw_sp, | |
1461 | struct mlxsw_sp_ipip_entry *ipip_entry, | |
1462 | struct net_device *ul_dev, | |
1463 | struct netlink_ext_ack *extack) | |
1464 | { | |
1465 | return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry, | |
1466 | true, true, false, extack); | |
1467 | } | |
1468 | ||
44b0fff1 PM |
1469 | static int |
1470 | mlxsw_sp_netdevice_ipip_ul_up_event(struct mlxsw_sp *mlxsw_sp, | |
1471 | struct mlxsw_sp_ipip_entry *ipip_entry, | |
1472 | struct net_device *ul_dev) | |
1473 | { | |
1474 | return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry, | |
1475 | false, false, true, NULL); | |
1476 | } | |
1477 | ||
1478 | static int | |
1479 | mlxsw_sp_netdevice_ipip_ul_down_event(struct mlxsw_sp *mlxsw_sp, | |
1480 | struct mlxsw_sp_ipip_entry *ipip_entry, | |
1481 | struct net_device *ul_dev) | |
1482 | { | |
1483 | /* A down underlay device causes encapsulated packets to not be | |
1484 | * forwarded, but decap still works. So refresh next hops without | |
1485 | * touching anything else. | |
1486 | */ | |
1487 | return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry, | |
1488 | false, false, true, NULL); | |
1489 | } | |
1490 | ||
4cf04f3f PM |
1491 | static int |
1492 | mlxsw_sp_netdevice_ipip_ol_change_event(struct mlxsw_sp *mlxsw_sp, | |
1493 | struct net_device *ol_dev, | |
1494 | struct netlink_ext_ack *extack) | |
1495 | { | |
1496 | const struct mlxsw_sp_ipip_ops *ipip_ops; | |
1497 | struct mlxsw_sp_ipip_entry *ipip_entry; | |
1498 | int err; | |
1499 | ||
1500 | ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); | |
1501 | if (!ipip_entry) | |
1502 | /* A change might make a tunnel eligible for offloading, but | |
1503 | * that is currently not implemented. What falls to slow path | |
1504 | * stays there. | |
1505 | */ | |
1506 | return 0; | |
1507 | ||
1508 | /* A change might make a tunnel not eligible for offloading. */ | |
1509 | if (!mlxsw_sp_netdevice_ipip_can_offload(mlxsw_sp, ol_dev, | |
1510 | ipip_entry->ipipt)) { | |
1511 | mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry); | |
1512 | return 0; | |
1513 | } | |
1514 | ||
1515 | ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt]; | |
1516 | err = ipip_ops->ol_netdev_change(mlxsw_sp, ipip_entry, extack); | |
1517 | return err; | |
1518 | } | |
1519 | ||
af641713 PM |
1520 | void mlxsw_sp_ipip_entry_demote_tunnel(struct mlxsw_sp *mlxsw_sp, |
1521 | struct mlxsw_sp_ipip_entry *ipip_entry) | |
1522 | { | |
1523 | struct net_device *ol_dev = ipip_entry->ol_dev; | |
1524 | ||
1525 | if (ol_dev->flags & IFF_UP) | |
1526 | mlxsw_sp_ipip_entry_ol_down_event(mlxsw_sp, ipip_entry); | |
1527 | mlxsw_sp_ipip_entry_destroy(mlxsw_sp, ipip_entry); | |
1528 | } | |
1529 | ||
1530 | /* The configuration where several tunnels have the same local address in the | |
1531 | * same underlay table needs special treatment in the HW. That is currently not | |
1532 | * implemented in the driver. This function finds and demotes the first tunnel | |
1533 | * with a given source address, except the one passed in in the argument | |
1534 | * `except'. | |
1535 | */ | |
1536 | bool | |
1537 | mlxsw_sp_ipip_demote_tunnel_by_saddr(struct mlxsw_sp *mlxsw_sp, | |
1538 | enum mlxsw_sp_l3proto ul_proto, | |
1539 | union mlxsw_sp_l3addr saddr, | |
1540 | u32 ul_tb_id, | |
1541 | const struct mlxsw_sp_ipip_entry *except) | |
1542 | { | |
1543 | struct mlxsw_sp_ipip_entry *ipip_entry, *tmp; | |
1544 | ||
1545 | list_for_each_entry_safe(ipip_entry, tmp, &mlxsw_sp->router->ipip_list, | |
1546 | ipip_list_node) { | |
1547 | if (ipip_entry != except && | |
1548 | mlxsw_sp_ipip_entry_saddr_matches(mlxsw_sp, ul_proto, saddr, | |
1549 | ul_tb_id, ipip_entry)) { | |
1550 | mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry); | |
1551 | return true; | |
1552 | } | |
1553 | } | |
1554 | ||
1555 | return false; | |
1556 | } | |
1557 | ||
61481f2f PM |
1558 | static void mlxsw_sp_ipip_demote_tunnel_by_ul_netdev(struct mlxsw_sp *mlxsw_sp, |
1559 | struct net_device *ul_dev) | |
1560 | { | |
1561 | struct mlxsw_sp_ipip_entry *ipip_entry, *tmp; | |
1562 | ||
1563 | list_for_each_entry_safe(ipip_entry, tmp, &mlxsw_sp->router->ipip_list, | |
1564 | ipip_list_node) { | |
1565 | struct net_device *ipip_ul_dev = | |
1566 | __mlxsw_sp_ipip_netdev_ul_dev_get(ipip_entry->ol_dev); | |
1567 | ||
1568 | if (ipip_ul_dev == ul_dev) | |
1569 | mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry); | |
1570 | } | |
1571 | } | |
1572 | ||
7e75af63 PM |
1573 | int mlxsw_sp_netdevice_ipip_ol_event(struct mlxsw_sp *mlxsw_sp, |
1574 | struct net_device *ol_dev, | |
1575 | unsigned long event, | |
1576 | struct netdev_notifier_info *info) | |
0063587d | 1577 | { |
7e75af63 PM |
1578 | struct netdev_notifier_changeupper_info *chup; |
1579 | struct netlink_ext_ack *extack; | |
1580 | ||
0063587d PM |
1581 | switch (event) { |
1582 | case NETDEV_REGISTER: | |
796ec776 | 1583 | return mlxsw_sp_netdevice_ipip_ol_reg_event(mlxsw_sp, ol_dev); |
0063587d | 1584 | case NETDEV_UNREGISTER: |
796ec776 | 1585 | mlxsw_sp_netdevice_ipip_ol_unreg_event(mlxsw_sp, ol_dev); |
0063587d PM |
1586 | return 0; |
1587 | case NETDEV_UP: | |
6d4de445 PM |
1588 | mlxsw_sp_netdevice_ipip_ol_up_event(mlxsw_sp, ol_dev); |
1589 | return 0; | |
0063587d | 1590 | case NETDEV_DOWN: |
796ec776 | 1591 | mlxsw_sp_netdevice_ipip_ol_down_event(mlxsw_sp, ol_dev); |
0063587d | 1592 | return 0; |
f63ce4e5 | 1593 | case NETDEV_CHANGEUPPER: |
7e75af63 PM |
1594 | chup = container_of(info, typeof(*chup), info); |
1595 | extack = info->extack; | |
1596 | if (netif_is_l3_master(chup->upper_dev)) | |
796ec776 | 1597 | return mlxsw_sp_netdevice_ipip_ol_vrf_event(mlxsw_sp, |
7e75af63 PM |
1598 | ol_dev, |
1599 | extack); | |
f63ce4e5 | 1600 | return 0; |
4cf04f3f PM |
1601 | case NETDEV_CHANGE: |
1602 | extack = info->extack; | |
1603 | return mlxsw_sp_netdevice_ipip_ol_change_event(mlxsw_sp, | |
1604 | ol_dev, extack); | |
0063587d PM |
1605 | } |
1606 | return 0; | |
1607 | } | |
1608 | ||
61481f2f PM |
1609 | static int |
1610 | __mlxsw_sp_netdevice_ipip_ul_event(struct mlxsw_sp *mlxsw_sp, | |
1611 | struct mlxsw_sp_ipip_entry *ipip_entry, | |
1612 | struct net_device *ul_dev, | |
1613 | unsigned long event, | |
1614 | struct netdev_notifier_info *info) | |
1615 | { | |
1616 | struct netdev_notifier_changeupper_info *chup; | |
1617 | struct netlink_ext_ack *extack; | |
1618 | ||
1619 | switch (event) { | |
1620 | case NETDEV_CHANGEUPPER: | |
1621 | chup = container_of(info, typeof(*chup), info); | |
1622 | extack = info->extack; | |
1623 | if (netif_is_l3_master(chup->upper_dev)) | |
1624 | return mlxsw_sp_netdevice_ipip_ul_vrf_event(mlxsw_sp, | |
1625 | ipip_entry, | |
1626 | ul_dev, | |
1627 | extack); | |
1628 | break; | |
44b0fff1 PM |
1629 | |
1630 | case NETDEV_UP: | |
1631 | return mlxsw_sp_netdevice_ipip_ul_up_event(mlxsw_sp, ipip_entry, | |
1632 | ul_dev); | |
1633 | case NETDEV_DOWN: | |
1634 | return mlxsw_sp_netdevice_ipip_ul_down_event(mlxsw_sp, | |
1635 | ipip_entry, | |
1636 | ul_dev); | |
61481f2f PM |
1637 | } |
1638 | return 0; | |
1639 | } | |
1640 | ||
1641 | int | |
1642 | mlxsw_sp_netdevice_ipip_ul_event(struct mlxsw_sp *mlxsw_sp, | |
1643 | struct net_device *ul_dev, | |
1644 | unsigned long event, | |
1645 | struct netdev_notifier_info *info) | |
1646 | { | |
1647 | struct mlxsw_sp_ipip_entry *ipip_entry = NULL; | |
1648 | int err; | |
1649 | ||
1650 | while ((ipip_entry = mlxsw_sp_ipip_entry_find_by_ul_dev(mlxsw_sp, | |
1651 | ul_dev, | |
1652 | ipip_entry))) { | |
1653 | err = __mlxsw_sp_netdevice_ipip_ul_event(mlxsw_sp, ipip_entry, | |
1654 | ul_dev, event, info); | |
1655 | if (err) { | |
1656 | mlxsw_sp_ipip_demote_tunnel_by_ul_netdev(mlxsw_sp, | |
1657 | ul_dev); | |
1658 | return err; | |
1659 | } | |
1660 | } | |
1661 | ||
1662 | return 0; | |
1663 | } | |
1664 | ||
6cf3c971 | 1665 | struct mlxsw_sp_neigh_key { |
33b1341c | 1666 | struct neighbour *n; |
6cf3c971 JP |
1667 | }; |
1668 | ||
1669 | struct mlxsw_sp_neigh_entry { | |
9665b745 | 1670 | struct list_head rif_list_node; |
6cf3c971 JP |
1671 | struct rhash_head ht_node; |
1672 | struct mlxsw_sp_neigh_key key; | |
1673 | u16 rif; | |
5c8802f1 | 1674 | bool connected; |
a6bf9e93 | 1675 | unsigned char ha[ETH_ALEN]; |
a7ff87ac JP |
1676 | struct list_head nexthop_list; /* list of nexthops using |
1677 | * this neigh entry | |
1678 | */ | |
b2157149 | 1679 | struct list_head nexthop_neighs_list_node; |
7cfcbc75 AS |
1680 | unsigned int counter_index; |
1681 | bool counter_valid; | |
6cf3c971 JP |
1682 | }; |
1683 | ||
1684 | static const struct rhashtable_params mlxsw_sp_neigh_ht_params = { | |
1685 | .key_offset = offsetof(struct mlxsw_sp_neigh_entry, key), | |
1686 | .head_offset = offsetof(struct mlxsw_sp_neigh_entry, ht_node), | |
1687 | .key_len = sizeof(struct mlxsw_sp_neigh_key), | |
1688 | }; | |
1689 | ||
f17cc84d AS |
1690 | struct mlxsw_sp_neigh_entry * |
1691 | mlxsw_sp_rif_neigh_next(struct mlxsw_sp_rif *rif, | |
1692 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
1693 | { | |
1694 | if (!neigh_entry) { | |
1695 | if (list_empty(&rif->neigh_list)) | |
1696 | return NULL; | |
1697 | else | |
1698 | return list_first_entry(&rif->neigh_list, | |
1699 | typeof(*neigh_entry), | |
1700 | rif_list_node); | |
1701 | } | |
ec2437f4 | 1702 | if (list_is_last(&neigh_entry->rif_list_node, &rif->neigh_list)) |
f17cc84d AS |
1703 | return NULL; |
1704 | return list_next_entry(neigh_entry, rif_list_node); | |
1705 | } | |
1706 | ||
1707 | int mlxsw_sp_neigh_entry_type(struct mlxsw_sp_neigh_entry *neigh_entry) | |
1708 | { | |
1709 | return neigh_entry->key.n->tbl->family; | |
1710 | } | |
1711 | ||
1712 | unsigned char * | |
1713 | mlxsw_sp_neigh_entry_ha(struct mlxsw_sp_neigh_entry *neigh_entry) | |
1714 | { | |
1715 | return neigh_entry->ha; | |
1716 | } | |
1717 | ||
1718 | u32 mlxsw_sp_neigh4_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry) | |
1719 | { | |
1720 | struct neighbour *n; | |
1721 | ||
1722 | n = neigh_entry->key.n; | |
1723 | return ntohl(*((__be32 *) n->primary_key)); | |
1724 | } | |
1725 | ||
0250768c AS |
1726 | struct in6_addr * |
1727 | mlxsw_sp_neigh6_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry) | |
1728 | { | |
1729 | struct neighbour *n; | |
1730 | ||
1731 | n = neigh_entry->key.n; | |
1732 | return (struct in6_addr *) &n->primary_key; | |
1733 | } | |
1734 | ||
7cfcbc75 AS |
1735 | int mlxsw_sp_neigh_counter_get(struct mlxsw_sp *mlxsw_sp, |
1736 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1737 | u64 *p_counter) | |
1738 | { | |
1739 | if (!neigh_entry->counter_valid) | |
1740 | return -EINVAL; | |
1741 | ||
1742 | return mlxsw_sp_flow_counter_get(mlxsw_sp, neigh_entry->counter_index, | |
1743 | p_counter, NULL); | |
1744 | } | |
1745 | ||
6cf3c971 | 1746 | static struct mlxsw_sp_neigh_entry * |
5c8802f1 IS |
1747 | mlxsw_sp_neigh_entry_alloc(struct mlxsw_sp *mlxsw_sp, struct neighbour *n, |
1748 | u16 rif) | |
6cf3c971 JP |
1749 | { |
1750 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1751 | ||
5c8802f1 | 1752 | neigh_entry = kzalloc(sizeof(*neigh_entry), GFP_KERNEL); |
6cf3c971 JP |
1753 | if (!neigh_entry) |
1754 | return NULL; | |
5c8802f1 | 1755 | |
33b1341c | 1756 | neigh_entry->key.n = n; |
6cf3c971 | 1757 | neigh_entry->rif = rif; |
a7ff87ac | 1758 | INIT_LIST_HEAD(&neigh_entry->nexthop_list); |
5c8802f1 | 1759 | |
6cf3c971 JP |
1760 | return neigh_entry; |
1761 | } | |
1762 | ||
5c8802f1 | 1763 | static void mlxsw_sp_neigh_entry_free(struct mlxsw_sp_neigh_entry *neigh_entry) |
6cf3c971 JP |
1764 | { |
1765 | kfree(neigh_entry); | |
1766 | } | |
1767 | ||
5c8802f1 IS |
1768 | static int |
1769 | mlxsw_sp_neigh_entry_insert(struct mlxsw_sp *mlxsw_sp, | |
1770 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 1771 | { |
9011b677 | 1772 | return rhashtable_insert_fast(&mlxsw_sp->router->neigh_ht, |
5c8802f1 IS |
1773 | &neigh_entry->ht_node, |
1774 | mlxsw_sp_neigh_ht_params); | |
1775 | } | |
6cf3c971 | 1776 | |
5c8802f1 IS |
1777 | static void |
1778 | mlxsw_sp_neigh_entry_remove(struct mlxsw_sp *mlxsw_sp, | |
1779 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
1780 | { | |
9011b677 | 1781 | rhashtable_remove_fast(&mlxsw_sp->router->neigh_ht, |
5c8802f1 IS |
1782 | &neigh_entry->ht_node, |
1783 | mlxsw_sp_neigh_ht_params); | |
6cf3c971 JP |
1784 | } |
1785 | ||
7cfcbc75 | 1786 | static bool |
1ed5574c AS |
1787 | mlxsw_sp_neigh_counter_should_alloc(struct mlxsw_sp *mlxsw_sp, |
1788 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
7cfcbc75 AS |
1789 | { |
1790 | struct devlink *devlink; | |
1ed5574c AS |
1791 | const char *table_name; |
1792 | ||
1793 | switch (mlxsw_sp_neigh_entry_type(neigh_entry)) { | |
1794 | case AF_INET: | |
1795 | table_name = MLXSW_SP_DPIPE_TABLE_NAME_HOST4; | |
1796 | break; | |
1797 | case AF_INET6: | |
1798 | table_name = MLXSW_SP_DPIPE_TABLE_NAME_HOST6; | |
1799 | break; | |
1800 | default: | |
1801 | WARN_ON(1); | |
1802 | return false; | |
1803 | } | |
7cfcbc75 AS |
1804 | |
1805 | devlink = priv_to_devlink(mlxsw_sp->core); | |
1ed5574c | 1806 | return devlink_dpipe_table_counter_enabled(devlink, table_name); |
7cfcbc75 AS |
1807 | } |
1808 | ||
1809 | static void | |
1810 | mlxsw_sp_neigh_counter_alloc(struct mlxsw_sp *mlxsw_sp, | |
1811 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
1812 | { | |
1ed5574c | 1813 | if (!mlxsw_sp_neigh_counter_should_alloc(mlxsw_sp, neigh_entry)) |
7cfcbc75 AS |
1814 | return; |
1815 | ||
1816 | if (mlxsw_sp_flow_counter_alloc(mlxsw_sp, &neigh_entry->counter_index)) | |
1817 | return; | |
1818 | ||
1819 | neigh_entry->counter_valid = true; | |
1820 | } | |
1821 | ||
1822 | static void | |
1823 | mlxsw_sp_neigh_counter_free(struct mlxsw_sp *mlxsw_sp, | |
1824 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
1825 | { | |
1826 | if (!neigh_entry->counter_valid) | |
1827 | return; | |
1828 | mlxsw_sp_flow_counter_free(mlxsw_sp, | |
1829 | neigh_entry->counter_index); | |
1830 | neigh_entry->counter_valid = false; | |
1831 | } | |
1832 | ||
5c8802f1 IS |
1833 | static struct mlxsw_sp_neigh_entry * |
1834 | mlxsw_sp_neigh_entry_create(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
6cf3c971 | 1835 | { |
6cf3c971 | 1836 | struct mlxsw_sp_neigh_entry *neigh_entry; |
bf95233e | 1837 | struct mlxsw_sp_rif *rif; |
6cf3c971 JP |
1838 | int err; |
1839 | ||
bf95233e AS |
1840 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, n->dev); |
1841 | if (!rif) | |
5c8802f1 | 1842 | return ERR_PTR(-EINVAL); |
6cf3c971 | 1843 | |
bf95233e | 1844 | neigh_entry = mlxsw_sp_neigh_entry_alloc(mlxsw_sp, n, rif->rif_index); |
6cf3c971 | 1845 | if (!neigh_entry) |
5c8802f1 IS |
1846 | return ERR_PTR(-ENOMEM); |
1847 | ||
6cf3c971 JP |
1848 | err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry); |
1849 | if (err) | |
1850 | goto err_neigh_entry_insert; | |
5c8802f1 | 1851 | |
7cfcbc75 | 1852 | mlxsw_sp_neigh_counter_alloc(mlxsw_sp, neigh_entry); |
bf95233e | 1853 | list_add(&neigh_entry->rif_list_node, &rif->neigh_list); |
9665b745 | 1854 | |
5c8802f1 | 1855 | return neigh_entry; |
6cf3c971 JP |
1856 | |
1857 | err_neigh_entry_insert: | |
5c8802f1 IS |
1858 | mlxsw_sp_neigh_entry_free(neigh_entry); |
1859 | return ERR_PTR(err); | |
6cf3c971 JP |
1860 | } |
1861 | ||
5c8802f1 IS |
1862 | static void |
1863 | mlxsw_sp_neigh_entry_destroy(struct mlxsw_sp *mlxsw_sp, | |
1864 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 1865 | { |
9665b745 | 1866 | list_del(&neigh_entry->rif_list_node); |
7cfcbc75 | 1867 | mlxsw_sp_neigh_counter_free(mlxsw_sp, neigh_entry); |
5c8802f1 IS |
1868 | mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry); |
1869 | mlxsw_sp_neigh_entry_free(neigh_entry); | |
1870 | } | |
6cf3c971 | 1871 | |
5c8802f1 IS |
1872 | static struct mlxsw_sp_neigh_entry * |
1873 | mlxsw_sp_neigh_entry_lookup(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
1874 | { | |
1875 | struct mlxsw_sp_neigh_key key; | |
6cf3c971 | 1876 | |
5c8802f1 | 1877 | key.n = n; |
9011b677 | 1878 | return rhashtable_lookup_fast(&mlxsw_sp->router->neigh_ht, |
5c8802f1 | 1879 | &key, mlxsw_sp_neigh_ht_params); |
6cf3c971 JP |
1880 | } |
1881 | ||
c723c735 YG |
1882 | static void |
1883 | mlxsw_sp_router_neighs_update_interval_init(struct mlxsw_sp *mlxsw_sp) | |
1884 | { | |
a6c9b5d1 | 1885 | unsigned long interval; |
c723c735 | 1886 | |
b5f3e0d4 | 1887 | #if IS_ENABLED(CONFIG_IPV6) |
a6c9b5d1 AS |
1888 | interval = min_t(unsigned long, |
1889 | NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME), | |
1890 | NEIGH_VAR(&nd_tbl.parms, DELAY_PROBE_TIME)); | |
b5f3e0d4 IS |
1891 | #else |
1892 | interval = NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME); | |
1893 | #endif | |
9011b677 | 1894 | mlxsw_sp->router->neighs_update.interval = jiffies_to_msecs(interval); |
c723c735 YG |
1895 | } |
1896 | ||
1897 | static void mlxsw_sp_router_neigh_ent_ipv4_process(struct mlxsw_sp *mlxsw_sp, | |
1898 | char *rauhtd_pl, | |
1899 | int ent_index) | |
1900 | { | |
1901 | struct net_device *dev; | |
1902 | struct neighbour *n; | |
1903 | __be32 dipn; | |
1904 | u32 dip; | |
1905 | u16 rif; | |
1906 | ||
1907 | mlxsw_reg_rauhtd_ent_ipv4_unpack(rauhtd_pl, ent_index, &rif, &dip); | |
1908 | ||
5f9efffb | 1909 | if (!mlxsw_sp->router->rifs[rif]) { |
c723c735 YG |
1910 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n"); |
1911 | return; | |
1912 | } | |
1913 | ||
1914 | dipn = htonl(dip); | |
5f9efffb | 1915 | dev = mlxsw_sp->router->rifs[rif]->dev; |
c723c735 YG |
1916 | n = neigh_lookup(&arp_tbl, &dipn, dev); |
1917 | if (!n) { | |
1918 | netdev_err(dev, "Failed to find matching neighbour for IP=%pI4h\n", | |
1919 | &dip); | |
1920 | return; | |
1921 | } | |
1922 | ||
1923 | netdev_dbg(dev, "Updating neighbour with IP=%pI4h\n", &dip); | |
1924 | neigh_event_send(n, NULL); | |
1925 | neigh_release(n); | |
1926 | } | |
1927 | ||
df9a21f1 | 1928 | #if IS_ENABLED(CONFIG_IPV6) |
60f040ca AS |
1929 | static void mlxsw_sp_router_neigh_ent_ipv6_process(struct mlxsw_sp *mlxsw_sp, |
1930 | char *rauhtd_pl, | |
1931 | int rec_index) | |
1932 | { | |
1933 | struct net_device *dev; | |
1934 | struct neighbour *n; | |
1935 | struct in6_addr dip; | |
1936 | u16 rif; | |
1937 | ||
1938 | mlxsw_reg_rauhtd_ent_ipv6_unpack(rauhtd_pl, rec_index, &rif, | |
1939 | (char *) &dip); | |
1940 | ||
1941 | if (!mlxsw_sp->router->rifs[rif]) { | |
1942 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n"); | |
1943 | return; | |
1944 | } | |
1945 | ||
1946 | dev = mlxsw_sp->router->rifs[rif]->dev; | |
1947 | n = neigh_lookup(&nd_tbl, &dip, dev); | |
1948 | if (!n) { | |
1949 | netdev_err(dev, "Failed to find matching neighbour for IP=%pI6c\n", | |
1950 | &dip); | |
1951 | return; | |
1952 | } | |
1953 | ||
1954 | netdev_dbg(dev, "Updating neighbour with IP=%pI6c\n", &dip); | |
1955 | neigh_event_send(n, NULL); | |
1956 | neigh_release(n); | |
1957 | } | |
b5f3e0d4 IS |
1958 | #else |
1959 | static void mlxsw_sp_router_neigh_ent_ipv6_process(struct mlxsw_sp *mlxsw_sp, | |
1960 | char *rauhtd_pl, | |
1961 | int rec_index) | |
1962 | { | |
1963 | } | |
1964 | #endif | |
60f040ca | 1965 | |
c723c735 YG |
1966 | static void mlxsw_sp_router_neigh_rec_ipv4_process(struct mlxsw_sp *mlxsw_sp, |
1967 | char *rauhtd_pl, | |
1968 | int rec_index) | |
1969 | { | |
1970 | u8 num_entries; | |
1971 | int i; | |
1972 | ||
1973 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
1974 | rec_index); | |
1975 | /* Hardware starts counting at 0, so add 1. */ | |
1976 | num_entries++; | |
1977 | ||
1978 | /* Each record consists of several neighbour entries. */ | |
1979 | for (i = 0; i < num_entries; i++) { | |
1980 | int ent_index; | |
1981 | ||
1982 | ent_index = rec_index * MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC + i; | |
1983 | mlxsw_sp_router_neigh_ent_ipv4_process(mlxsw_sp, rauhtd_pl, | |
1984 | ent_index); | |
1985 | } | |
1986 | ||
1987 | } | |
1988 | ||
60f040ca AS |
1989 | static void mlxsw_sp_router_neigh_rec_ipv6_process(struct mlxsw_sp *mlxsw_sp, |
1990 | char *rauhtd_pl, | |
1991 | int rec_index) | |
1992 | { | |
1993 | /* One record contains one entry. */ | |
1994 | mlxsw_sp_router_neigh_ent_ipv6_process(mlxsw_sp, rauhtd_pl, | |
1995 | rec_index); | |
1996 | } | |
1997 | ||
c723c735 YG |
1998 | static void mlxsw_sp_router_neigh_rec_process(struct mlxsw_sp *mlxsw_sp, |
1999 | char *rauhtd_pl, int rec_index) | |
2000 | { | |
2001 | switch (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, rec_index)) { | |
2002 | case MLXSW_REG_RAUHTD_TYPE_IPV4: | |
2003 | mlxsw_sp_router_neigh_rec_ipv4_process(mlxsw_sp, rauhtd_pl, | |
2004 | rec_index); | |
2005 | break; | |
2006 | case MLXSW_REG_RAUHTD_TYPE_IPV6: | |
60f040ca AS |
2007 | mlxsw_sp_router_neigh_rec_ipv6_process(mlxsw_sp, rauhtd_pl, |
2008 | rec_index); | |
c723c735 YG |
2009 | break; |
2010 | } | |
2011 | } | |
2012 | ||
42cdb338 AS |
2013 | static bool mlxsw_sp_router_rauhtd_is_full(char *rauhtd_pl) |
2014 | { | |
2015 | u8 num_rec, last_rec_index, num_entries; | |
2016 | ||
2017 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
2018 | last_rec_index = num_rec - 1; | |
2019 | ||
2020 | if (num_rec < MLXSW_REG_RAUHTD_REC_MAX_NUM) | |
2021 | return false; | |
2022 | if (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, last_rec_index) == | |
2023 | MLXSW_REG_RAUHTD_TYPE_IPV6) | |
2024 | return true; | |
2025 | ||
2026 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
2027 | last_rec_index); | |
2028 | if (++num_entries == MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC) | |
2029 | return true; | |
2030 | return false; | |
2031 | } | |
2032 | ||
60f040ca AS |
2033 | static int |
2034 | __mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp, | |
2035 | char *rauhtd_pl, | |
2036 | enum mlxsw_reg_rauhtd_type type) | |
c723c735 | 2037 | { |
60f040ca AS |
2038 | int i, num_rec; |
2039 | int err; | |
c723c735 YG |
2040 | |
2041 | /* Make sure the neighbour's netdev isn't removed in the | |
2042 | * process. | |
2043 | */ | |
2044 | rtnl_lock(); | |
2045 | do { | |
60f040ca | 2046 | mlxsw_reg_rauhtd_pack(rauhtd_pl, type); |
c723c735 YG |
2047 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(rauhtd), |
2048 | rauhtd_pl); | |
2049 | if (err) { | |
7ff176f8 | 2050 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to dump neighbour table\n"); |
c723c735 YG |
2051 | break; |
2052 | } | |
2053 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
2054 | for (i = 0; i < num_rec; i++) | |
2055 | mlxsw_sp_router_neigh_rec_process(mlxsw_sp, rauhtd_pl, | |
2056 | i); | |
42cdb338 | 2057 | } while (mlxsw_sp_router_rauhtd_is_full(rauhtd_pl)); |
c723c735 YG |
2058 | rtnl_unlock(); |
2059 | ||
60f040ca AS |
2060 | return err; |
2061 | } | |
2062 | ||
2063 | static int mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp) | |
2064 | { | |
2065 | enum mlxsw_reg_rauhtd_type type; | |
2066 | char *rauhtd_pl; | |
2067 | int err; | |
2068 | ||
2069 | rauhtd_pl = kmalloc(MLXSW_REG_RAUHTD_LEN, GFP_KERNEL); | |
2070 | if (!rauhtd_pl) | |
2071 | return -ENOMEM; | |
2072 | ||
2073 | type = MLXSW_REG_RAUHTD_TYPE_IPV4; | |
2074 | err = __mlxsw_sp_router_neighs_update_rauhtd(mlxsw_sp, rauhtd_pl, type); | |
2075 | if (err) | |
2076 | goto out; | |
2077 | ||
2078 | type = MLXSW_REG_RAUHTD_TYPE_IPV6; | |
2079 | err = __mlxsw_sp_router_neighs_update_rauhtd(mlxsw_sp, rauhtd_pl, type); | |
2080 | out: | |
c723c735 | 2081 | kfree(rauhtd_pl); |
b2157149 YG |
2082 | return err; |
2083 | } | |
2084 | ||
2085 | static void mlxsw_sp_router_neighs_update_nh(struct mlxsw_sp *mlxsw_sp) | |
2086 | { | |
2087 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
2088 | ||
2089 | /* Take RTNL mutex here to prevent lists from changes */ | |
2090 | rtnl_lock(); | |
9011b677 | 2091 | list_for_each_entry(neigh_entry, &mlxsw_sp->router->nexthop_neighs_list, |
8a0b7275 | 2092 | nexthop_neighs_list_node) |
b2157149 YG |
2093 | /* If this neigh have nexthops, make the kernel think this neigh |
2094 | * is active regardless of the traffic. | |
2095 | */ | |
8a0b7275 | 2096 | neigh_event_send(neigh_entry->key.n, NULL); |
b2157149 YG |
2097 | rtnl_unlock(); |
2098 | } | |
2099 | ||
2100 | static void | |
2101 | mlxsw_sp_router_neighs_update_work_schedule(struct mlxsw_sp *mlxsw_sp) | |
2102 | { | |
9011b677 | 2103 | unsigned long interval = mlxsw_sp->router->neighs_update.interval; |
b2157149 | 2104 | |
9011b677 | 2105 | mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, |
b2157149 YG |
2106 | msecs_to_jiffies(interval)); |
2107 | } | |
2108 | ||
2109 | static void mlxsw_sp_router_neighs_update_work(struct work_struct *work) | |
2110 | { | |
9011b677 | 2111 | struct mlxsw_sp_router *router; |
b2157149 YG |
2112 | int err; |
2113 | ||
9011b677 IS |
2114 | router = container_of(work, struct mlxsw_sp_router, |
2115 | neighs_update.dw.work); | |
2116 | err = mlxsw_sp_router_neighs_update_rauhtd(router->mlxsw_sp); | |
b2157149 | 2117 | if (err) |
9011b677 | 2118 | dev_err(router->mlxsw_sp->bus_info->dev, "Could not update kernel for neigh activity"); |
b2157149 | 2119 | |
9011b677 | 2120 | mlxsw_sp_router_neighs_update_nh(router->mlxsw_sp); |
b2157149 | 2121 | |
9011b677 | 2122 | mlxsw_sp_router_neighs_update_work_schedule(router->mlxsw_sp); |
c723c735 YG |
2123 | } |
2124 | ||
0b2361d9 YG |
2125 | static void mlxsw_sp_router_probe_unresolved_nexthops(struct work_struct *work) |
2126 | { | |
2127 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
9011b677 | 2128 | struct mlxsw_sp_router *router; |
0b2361d9 | 2129 | |
9011b677 IS |
2130 | router = container_of(work, struct mlxsw_sp_router, |
2131 | nexthop_probe_dw.work); | |
0b2361d9 YG |
2132 | /* Iterate over nexthop neighbours, find those who are unresolved and |
2133 | * send arp on them. This solves the chicken-egg problem when | |
2134 | * the nexthop wouldn't get offloaded until the neighbor is resolved | |
2135 | * but it wouldn't get resolved ever in case traffic is flowing in HW | |
2136 | * using different nexthop. | |
2137 | * | |
2138 | * Take RTNL mutex here to prevent lists from changes. | |
2139 | */ | |
2140 | rtnl_lock(); | |
9011b677 | 2141 | list_for_each_entry(neigh_entry, &router->nexthop_neighs_list, |
8a0b7275 | 2142 | nexthop_neighs_list_node) |
01b1aa35 | 2143 | if (!neigh_entry->connected) |
33b1341c | 2144 | neigh_event_send(neigh_entry->key.n, NULL); |
0b2361d9 YG |
2145 | rtnl_unlock(); |
2146 | ||
9011b677 | 2147 | mlxsw_core_schedule_dw(&router->nexthop_probe_dw, |
0b2361d9 YG |
2148 | MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL); |
2149 | } | |
2150 | ||
a7ff87ac JP |
2151 | static void |
2152 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
2153 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
2154 | bool removing); | |
2155 | ||
5c8802f1 IS |
2156 | static enum mlxsw_reg_rauht_op mlxsw_sp_rauht_op(bool adding) |
2157 | { | |
2158 | return adding ? MLXSW_REG_RAUHT_OP_WRITE_ADD : | |
2159 | MLXSW_REG_RAUHT_OP_WRITE_DELETE; | |
2160 | } | |
2161 | ||
2162 | static void | |
2163 | mlxsw_sp_router_neigh_entry_op4(struct mlxsw_sp *mlxsw_sp, | |
2164 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
2165 | enum mlxsw_reg_rauht_op op) | |
a6bf9e93 | 2166 | { |
33b1341c | 2167 | struct neighbour *n = neigh_entry->key.n; |
5c8802f1 | 2168 | u32 dip = ntohl(*((__be32 *) n->primary_key)); |
a6bf9e93 | 2169 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; |
5c8802f1 IS |
2170 | |
2171 | mlxsw_reg_rauht_pack4(rauht_pl, op, neigh_entry->rif, neigh_entry->ha, | |
2172 | dip); | |
7cfcbc75 AS |
2173 | if (neigh_entry->counter_valid) |
2174 | mlxsw_reg_rauht_pack_counter(rauht_pl, | |
2175 | neigh_entry->counter_index); | |
5c8802f1 IS |
2176 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); |
2177 | } | |
2178 | ||
d5eb89cf AS |
2179 | static void |
2180 | mlxsw_sp_router_neigh_entry_op6(struct mlxsw_sp *mlxsw_sp, | |
2181 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
2182 | enum mlxsw_reg_rauht_op op) | |
2183 | { | |
2184 | struct neighbour *n = neigh_entry->key.n; | |
2185 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; | |
2186 | const char *dip = n->primary_key; | |
2187 | ||
2188 | mlxsw_reg_rauht_pack6(rauht_pl, op, neigh_entry->rif, neigh_entry->ha, | |
2189 | dip); | |
7cfcbc75 AS |
2190 | if (neigh_entry->counter_valid) |
2191 | mlxsw_reg_rauht_pack_counter(rauht_pl, | |
2192 | neigh_entry->counter_index); | |
d5eb89cf AS |
2193 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); |
2194 | } | |
2195 | ||
1d1056d8 | 2196 | bool mlxsw_sp_neigh_ipv6_ignore(struct mlxsw_sp_neigh_entry *neigh_entry) |
d5eb89cf | 2197 | { |
1d1056d8 AS |
2198 | struct neighbour *n = neigh_entry->key.n; |
2199 | ||
d5eb89cf AS |
2200 | /* Packets with a link-local destination address are trapped |
2201 | * after LPM lookup and never reach the neighbour table, so | |
2202 | * there is no need to program such neighbours to the device. | |
2203 | */ | |
2204 | if (ipv6_addr_type((struct in6_addr *) &n->primary_key) & | |
2205 | IPV6_ADDR_LINKLOCAL) | |
2206 | return true; | |
2207 | return false; | |
2208 | } | |
2209 | ||
5c8802f1 IS |
2210 | static void |
2211 | mlxsw_sp_neigh_entry_update(struct mlxsw_sp *mlxsw_sp, | |
2212 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
2213 | bool adding) | |
2214 | { | |
2215 | if (!adding && !neigh_entry->connected) | |
2216 | return; | |
2217 | neigh_entry->connected = adding; | |
b5f3e0d4 | 2218 | if (neigh_entry->key.n->tbl->family == AF_INET) { |
5c8802f1 IS |
2219 | mlxsw_sp_router_neigh_entry_op4(mlxsw_sp, neigh_entry, |
2220 | mlxsw_sp_rauht_op(adding)); | |
b5f3e0d4 | 2221 | } else if (neigh_entry->key.n->tbl->family == AF_INET6) { |
1d1056d8 | 2222 | if (mlxsw_sp_neigh_ipv6_ignore(neigh_entry)) |
d5eb89cf AS |
2223 | return; |
2224 | mlxsw_sp_router_neigh_entry_op6(mlxsw_sp, neigh_entry, | |
2225 | mlxsw_sp_rauht_op(adding)); | |
2226 | } else { | |
5c8802f1 | 2227 | WARN_ON_ONCE(1); |
d5eb89cf | 2228 | } |
5c8802f1 IS |
2229 | } |
2230 | ||
a481d713 AS |
2231 | void |
2232 | mlxsw_sp_neigh_entry_counter_update(struct mlxsw_sp *mlxsw_sp, | |
2233 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
2234 | bool adding) | |
2235 | { | |
2236 | if (adding) | |
2237 | mlxsw_sp_neigh_counter_alloc(mlxsw_sp, neigh_entry); | |
2238 | else | |
2239 | mlxsw_sp_neigh_counter_free(mlxsw_sp, neigh_entry); | |
2240 | mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, true); | |
2241 | } | |
2242 | ||
ceb8881d | 2243 | struct mlxsw_sp_netevent_work { |
5c8802f1 IS |
2244 | struct work_struct work; |
2245 | struct mlxsw_sp *mlxsw_sp; | |
2246 | struct neighbour *n; | |
2247 | }; | |
2248 | ||
2249 | static void mlxsw_sp_router_neigh_event_work(struct work_struct *work) | |
2250 | { | |
ceb8881d IS |
2251 | struct mlxsw_sp_netevent_work *net_work = |
2252 | container_of(work, struct mlxsw_sp_netevent_work, work); | |
2253 | struct mlxsw_sp *mlxsw_sp = net_work->mlxsw_sp; | |
5c8802f1 | 2254 | struct mlxsw_sp_neigh_entry *neigh_entry; |
ceb8881d | 2255 | struct neighbour *n = net_work->n; |
5c8802f1 | 2256 | unsigned char ha[ETH_ALEN]; |
a6bf9e93 | 2257 | bool entry_connected; |
93a87e5e | 2258 | u8 nud_state, dead; |
a6bf9e93 | 2259 | |
5c8802f1 IS |
2260 | /* If these parameters are changed after we release the lock, |
2261 | * then we are guaranteed to receive another event letting us | |
2262 | * know about it. | |
2263 | */ | |
a6bf9e93 | 2264 | read_lock_bh(&n->lock); |
5c8802f1 | 2265 | memcpy(ha, n->ha, ETH_ALEN); |
a6bf9e93 | 2266 | nud_state = n->nud_state; |
93a87e5e | 2267 | dead = n->dead; |
a6bf9e93 YG |
2268 | read_unlock_bh(&n->lock); |
2269 | ||
5c8802f1 | 2270 | rtnl_lock(); |
93a87e5e | 2271 | entry_connected = nud_state & NUD_VALID && !dead; |
5c8802f1 IS |
2272 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); |
2273 | if (!entry_connected && !neigh_entry) | |
2274 | goto out; | |
2275 | if (!neigh_entry) { | |
2276 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); | |
2277 | if (IS_ERR(neigh_entry)) | |
2278 | goto out; | |
a6bf9e93 YG |
2279 | } |
2280 | ||
5c8802f1 IS |
2281 | memcpy(neigh_entry->ha, ha, ETH_ALEN); |
2282 | mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, entry_connected); | |
2283 | mlxsw_sp_nexthop_neigh_update(mlxsw_sp, neigh_entry, !entry_connected); | |
2284 | ||
2285 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) | |
2286 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
2287 | ||
2288 | out: | |
2289 | rtnl_unlock(); | |
a6bf9e93 | 2290 | neigh_release(n); |
ceb8881d | 2291 | kfree(net_work); |
a6bf9e93 YG |
2292 | } |
2293 | ||
28678f07 IS |
2294 | static int mlxsw_sp_mp_hash_init(struct mlxsw_sp *mlxsw_sp); |
2295 | ||
2296 | static void mlxsw_sp_router_mp_hash_event_work(struct work_struct *work) | |
2297 | { | |
2298 | struct mlxsw_sp_netevent_work *net_work = | |
2299 | container_of(work, struct mlxsw_sp_netevent_work, work); | |
2300 | struct mlxsw_sp *mlxsw_sp = net_work->mlxsw_sp; | |
2301 | ||
2302 | mlxsw_sp_mp_hash_init(mlxsw_sp); | |
2303 | kfree(net_work); | |
2304 | } | |
2305 | ||
2306 | static int mlxsw_sp_router_netevent_event(struct notifier_block *nb, | |
48fac885 | 2307 | unsigned long event, void *ptr) |
c723c735 | 2308 | { |
ceb8881d | 2309 | struct mlxsw_sp_netevent_work *net_work; |
c723c735 | 2310 | struct mlxsw_sp_port *mlxsw_sp_port; |
28678f07 | 2311 | struct mlxsw_sp_router *router; |
c723c735 YG |
2312 | struct mlxsw_sp *mlxsw_sp; |
2313 | unsigned long interval; | |
2314 | struct neigh_parms *p; | |
a6bf9e93 | 2315 | struct neighbour *n; |
28678f07 | 2316 | struct net *net; |
c723c735 YG |
2317 | |
2318 | switch (event) { | |
2319 | case NETEVENT_DELAY_PROBE_TIME_UPDATE: | |
2320 | p = ptr; | |
2321 | ||
2322 | /* We don't care about changes in the default table. */ | |
b5f3e0d4 IS |
2323 | if (!p->dev || (p->tbl->family != AF_INET && |
2324 | p->tbl->family != AF_INET6)) | |
c723c735 YG |
2325 | return NOTIFY_DONE; |
2326 | ||
2327 | /* We are in atomic context and can't take RTNL mutex, | |
2328 | * so use RCU variant to walk the device chain. | |
2329 | */ | |
2330 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(p->dev); | |
2331 | if (!mlxsw_sp_port) | |
2332 | return NOTIFY_DONE; | |
2333 | ||
2334 | mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
2335 | interval = jiffies_to_msecs(NEIGH_VAR(p, DELAY_PROBE_TIME)); | |
9011b677 | 2336 | mlxsw_sp->router->neighs_update.interval = interval; |
c723c735 YG |
2337 | |
2338 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
2339 | break; | |
a6bf9e93 YG |
2340 | case NETEVENT_NEIGH_UPDATE: |
2341 | n = ptr; | |
a6bf9e93 | 2342 | |
b5f3e0d4 | 2343 | if (n->tbl->family != AF_INET && n->tbl->family != AF_INET6) |
a6bf9e93 YG |
2344 | return NOTIFY_DONE; |
2345 | ||
5c8802f1 | 2346 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(n->dev); |
a6bf9e93 YG |
2347 | if (!mlxsw_sp_port) |
2348 | return NOTIFY_DONE; | |
2349 | ||
ceb8881d IS |
2350 | net_work = kzalloc(sizeof(*net_work), GFP_ATOMIC); |
2351 | if (!net_work) { | |
a6bf9e93 | 2352 | mlxsw_sp_port_dev_put(mlxsw_sp_port); |
5c8802f1 | 2353 | return NOTIFY_BAD; |
a6bf9e93 | 2354 | } |
5c8802f1 | 2355 | |
ceb8881d IS |
2356 | INIT_WORK(&net_work->work, mlxsw_sp_router_neigh_event_work); |
2357 | net_work->mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
2358 | net_work->n = n; | |
a6bf9e93 YG |
2359 | |
2360 | /* Take a reference to ensure the neighbour won't be | |
2361 | * destructed until we drop the reference in delayed | |
2362 | * work. | |
2363 | */ | |
2364 | neigh_clone(n); | |
ceb8881d | 2365 | mlxsw_core_schedule_work(&net_work->work); |
5c8802f1 | 2366 | mlxsw_sp_port_dev_put(mlxsw_sp_port); |
a6bf9e93 | 2367 | break; |
28678f07 IS |
2368 | case NETEVENT_MULTIPATH_HASH_UPDATE: |
2369 | net = ptr; | |
2370 | ||
2371 | if (!net_eq(net, &init_net)) | |
2372 | return NOTIFY_DONE; | |
2373 | ||
2374 | net_work = kzalloc(sizeof(*net_work), GFP_ATOMIC); | |
2375 | if (!net_work) | |
2376 | return NOTIFY_BAD; | |
2377 | ||
2378 | router = container_of(nb, struct mlxsw_sp_router, netevent_nb); | |
2379 | INIT_WORK(&net_work->work, mlxsw_sp_router_mp_hash_event_work); | |
2380 | net_work->mlxsw_sp = router->mlxsw_sp; | |
2381 | mlxsw_core_schedule_work(&net_work->work); | |
2382 | break; | |
c723c735 YG |
2383 | } |
2384 | ||
2385 | return NOTIFY_DONE; | |
2386 | } | |
2387 | ||
6cf3c971 JP |
2388 | static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp) |
2389 | { | |
c723c735 YG |
2390 | int err; |
2391 | ||
9011b677 | 2392 | err = rhashtable_init(&mlxsw_sp->router->neigh_ht, |
c723c735 YG |
2393 | &mlxsw_sp_neigh_ht_params); |
2394 | if (err) | |
2395 | return err; | |
2396 | ||
2397 | /* Initialize the polling interval according to the default | |
2398 | * table. | |
2399 | */ | |
2400 | mlxsw_sp_router_neighs_update_interval_init(mlxsw_sp); | |
2401 | ||
0b2361d9 | 2402 | /* Create the delayed works for the activity_update */ |
9011b677 | 2403 | INIT_DELAYED_WORK(&mlxsw_sp->router->neighs_update.dw, |
c723c735 | 2404 | mlxsw_sp_router_neighs_update_work); |
9011b677 | 2405 | INIT_DELAYED_WORK(&mlxsw_sp->router->nexthop_probe_dw, |
0b2361d9 | 2406 | mlxsw_sp_router_probe_unresolved_nexthops); |
9011b677 IS |
2407 | mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, 0); |
2408 | mlxsw_core_schedule_dw(&mlxsw_sp->router->nexthop_probe_dw, 0); | |
c723c735 | 2409 | return 0; |
6cf3c971 JP |
2410 | } |
2411 | ||
2412 | static void mlxsw_sp_neigh_fini(struct mlxsw_sp *mlxsw_sp) | |
2413 | { | |
9011b677 IS |
2414 | cancel_delayed_work_sync(&mlxsw_sp->router->neighs_update.dw); |
2415 | cancel_delayed_work_sync(&mlxsw_sp->router->nexthop_probe_dw); | |
2416 | rhashtable_destroy(&mlxsw_sp->router->neigh_ht); | |
6cf3c971 JP |
2417 | } |
2418 | ||
63dd00fa IS |
2419 | static int mlxsw_sp_neigh_rif_flush(struct mlxsw_sp *mlxsw_sp, |
2420 | const struct mlxsw_sp_rif *rif) | |
2421 | { | |
2422 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; | |
2423 | ||
2424 | mlxsw_reg_rauht_pack(rauht_pl, MLXSW_REG_RAUHT_OP_WRITE_DELETE_ALL, | |
2425 | rif->rif_index, rif->addr); | |
2426 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); | |
2427 | } | |
2428 | ||
9665b745 | 2429 | static void mlxsw_sp_neigh_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, |
bf95233e | 2430 | struct mlxsw_sp_rif *rif) |
9665b745 IS |
2431 | { |
2432 | struct mlxsw_sp_neigh_entry *neigh_entry, *tmp; | |
2433 | ||
63dd00fa | 2434 | mlxsw_sp_neigh_rif_flush(mlxsw_sp, rif); |
bf95233e | 2435 | list_for_each_entry_safe(neigh_entry, tmp, &rif->neigh_list, |
63dd00fa | 2436 | rif_list_node) |
9665b745 IS |
2437 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); |
2438 | } | |
2439 | ||
35225e47 PM |
2440 | enum mlxsw_sp_nexthop_type { |
2441 | MLXSW_SP_NEXTHOP_TYPE_ETH, | |
1012b9ac | 2442 | MLXSW_SP_NEXTHOP_TYPE_IPIP, |
35225e47 PM |
2443 | }; |
2444 | ||
c53b8e1b IS |
2445 | struct mlxsw_sp_nexthop_key { |
2446 | struct fib_nh *fib_nh; | |
2447 | }; | |
2448 | ||
a7ff87ac JP |
2449 | struct mlxsw_sp_nexthop { |
2450 | struct list_head neigh_list_node; /* member of neigh entry list */ | |
9665b745 | 2451 | struct list_head rif_list_node; |
dbe4598c | 2452 | struct list_head router_list_node; |
a7ff87ac JP |
2453 | struct mlxsw_sp_nexthop_group *nh_grp; /* pointer back to the group |
2454 | * this belongs to | |
2455 | */ | |
c53b8e1b IS |
2456 | struct rhash_head ht_node; |
2457 | struct mlxsw_sp_nexthop_key key; | |
58adf2c4 | 2458 | unsigned char gw_addr[sizeof(struct in6_addr)]; |
e6f3b379 | 2459 | int ifindex; |
408bd946 | 2460 | int nh_weight; |
eb789980 IS |
2461 | int norm_nh_weight; |
2462 | int num_adj_entries; | |
bf95233e | 2463 | struct mlxsw_sp_rif *rif; |
a7ff87ac JP |
2464 | u8 should_offload:1, /* set indicates this neigh is connected and |
2465 | * should be put to KVD linear area of this group. | |
2466 | */ | |
2467 | offloaded:1, /* set in case the neigh is actually put into | |
2468 | * KVD linear area of this group. | |
2469 | */ | |
2470 | update:1; /* set indicates that MAC of this neigh should be | |
2471 | * updated in HW | |
2472 | */ | |
35225e47 PM |
2473 | enum mlxsw_sp_nexthop_type type; |
2474 | union { | |
2475 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1012b9ac | 2476 | struct mlxsw_sp_ipip_entry *ipip_entry; |
35225e47 | 2477 | }; |
a5390278 AS |
2478 | unsigned int counter_index; |
2479 | bool counter_valid; | |
a7ff87ac JP |
2480 | }; |
2481 | ||
2482 | struct mlxsw_sp_nexthop_group { | |
ba31d366 | 2483 | void *priv; |
e9ad5e7d | 2484 | struct rhash_head ht_node; |
a7ff87ac | 2485 | struct list_head fib_list; /* list of fib entries that use this group */ |
58adf2c4 | 2486 | struct neigh_table *neigh_tbl; |
b3e8d1eb IS |
2487 | u8 adj_index_valid:1, |
2488 | gateway:1; /* routes using the group use a gateway */ | |
a7ff87ac JP |
2489 | u32 adj_index; |
2490 | u16 ecmp_size; | |
2491 | u16 count; | |
eb789980 | 2492 | int sum_norm_weight; |
a7ff87ac | 2493 | struct mlxsw_sp_nexthop nexthops[0]; |
bf95233e | 2494 | #define nh_rif nexthops[0].rif |
a7ff87ac JP |
2495 | }; |
2496 | ||
427e652a AS |
2497 | void mlxsw_sp_nexthop_counter_alloc(struct mlxsw_sp *mlxsw_sp, |
2498 | struct mlxsw_sp_nexthop *nh) | |
a5390278 AS |
2499 | { |
2500 | struct devlink *devlink; | |
2501 | ||
2502 | devlink = priv_to_devlink(mlxsw_sp->core); | |
2503 | if (!devlink_dpipe_table_counter_enabled(devlink, | |
2504 | MLXSW_SP_DPIPE_TABLE_NAME_ADJ)) | |
2505 | return; | |
2506 | ||
2507 | if (mlxsw_sp_flow_counter_alloc(mlxsw_sp, &nh->counter_index)) | |
2508 | return; | |
2509 | ||
2510 | nh->counter_valid = true; | |
2511 | } | |
2512 | ||
427e652a AS |
2513 | void mlxsw_sp_nexthop_counter_free(struct mlxsw_sp *mlxsw_sp, |
2514 | struct mlxsw_sp_nexthop *nh) | |
a5390278 AS |
2515 | { |
2516 | if (!nh->counter_valid) | |
2517 | return; | |
2518 | mlxsw_sp_flow_counter_free(mlxsw_sp, nh->counter_index); | |
2519 | nh->counter_valid = false; | |
2520 | } | |
2521 | ||
2522 | int mlxsw_sp_nexthop_counter_get(struct mlxsw_sp *mlxsw_sp, | |
2523 | struct mlxsw_sp_nexthop *nh, u64 *p_counter) | |
2524 | { | |
2525 | if (!nh->counter_valid) | |
2526 | return -EINVAL; | |
2527 | ||
2528 | return mlxsw_sp_flow_counter_get(mlxsw_sp, nh->counter_index, | |
2529 | p_counter, NULL); | |
2530 | } | |
2531 | ||
c556cd28 AS |
2532 | struct mlxsw_sp_nexthop *mlxsw_sp_nexthop_next(struct mlxsw_sp_router *router, |
2533 | struct mlxsw_sp_nexthop *nh) | |
2534 | { | |
2535 | if (!nh) { | |
2536 | if (list_empty(&router->nexthop_list)) | |
2537 | return NULL; | |
2538 | else | |
2539 | return list_first_entry(&router->nexthop_list, | |
2540 | typeof(*nh), router_list_node); | |
2541 | } | |
2542 | if (list_is_last(&nh->router_list_node, &router->nexthop_list)) | |
2543 | return NULL; | |
2544 | return list_next_entry(nh, router_list_node); | |
2545 | } | |
2546 | ||
2547 | bool mlxsw_sp_nexthop_offload(struct mlxsw_sp_nexthop *nh) | |
2548 | { | |
2549 | return nh->offloaded; | |
2550 | } | |
2551 | ||
2552 | unsigned char *mlxsw_sp_nexthop_ha(struct mlxsw_sp_nexthop *nh) | |
2553 | { | |
2554 | if (!nh->offloaded) | |
2555 | return NULL; | |
2556 | return nh->neigh_entry->ha; | |
2557 | } | |
2558 | ||
2559 | int mlxsw_sp_nexthop_indexes(struct mlxsw_sp_nexthop *nh, u32 *p_adj_index, | |
e69cd9d7 | 2560 | u32 *p_adj_size, u32 *p_adj_hash_index) |
c556cd28 AS |
2561 | { |
2562 | struct mlxsw_sp_nexthop_group *nh_grp = nh->nh_grp; | |
2563 | u32 adj_hash_index = 0; | |
2564 | int i; | |
2565 | ||
2566 | if (!nh->offloaded || !nh_grp->adj_index_valid) | |
2567 | return -EINVAL; | |
2568 | ||
2569 | *p_adj_index = nh_grp->adj_index; | |
e69cd9d7 | 2570 | *p_adj_size = nh_grp->ecmp_size; |
c556cd28 AS |
2571 | |
2572 | for (i = 0; i < nh_grp->count; i++) { | |
2573 | struct mlxsw_sp_nexthop *nh_iter = &nh_grp->nexthops[i]; | |
2574 | ||
2575 | if (nh_iter == nh) | |
2576 | break; | |
2577 | if (nh_iter->offloaded) | |
eb789980 | 2578 | adj_hash_index += nh_iter->num_adj_entries; |
c556cd28 AS |
2579 | } |
2580 | ||
2581 | *p_adj_hash_index = adj_hash_index; | |
2582 | return 0; | |
2583 | } | |
2584 | ||
2585 | struct mlxsw_sp_rif *mlxsw_sp_nexthop_rif(struct mlxsw_sp_nexthop *nh) | |
2586 | { | |
2587 | return nh->rif; | |
2588 | } | |
2589 | ||
2590 | bool mlxsw_sp_nexthop_group_has_ipip(struct mlxsw_sp_nexthop *nh) | |
2591 | { | |
2592 | struct mlxsw_sp_nexthop_group *nh_grp = nh->nh_grp; | |
2593 | int i; | |
2594 | ||
2595 | for (i = 0; i < nh_grp->count; i++) { | |
2596 | struct mlxsw_sp_nexthop *nh_iter = &nh_grp->nexthops[i]; | |
2597 | ||
2598 | if (nh_iter->type == MLXSW_SP_NEXTHOP_TYPE_IPIP) | |
2599 | return true; | |
2600 | } | |
2601 | return false; | |
2602 | } | |
2603 | ||
ba31d366 AS |
2604 | static struct fib_info * |
2605 | mlxsw_sp_nexthop4_group_fi(const struct mlxsw_sp_nexthop_group *nh_grp) | |
2606 | { | |
2607 | return nh_grp->priv; | |
2608 | } | |
2609 | ||
2610 | struct mlxsw_sp_nexthop_group_cmp_arg { | |
e6f3b379 AS |
2611 | enum mlxsw_sp_l3proto proto; |
2612 | union { | |
2613 | struct fib_info *fi; | |
2614 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
2615 | }; | |
ba31d366 AS |
2616 | }; |
2617 | ||
e6f3b379 AS |
2618 | static bool |
2619 | mlxsw_sp_nexthop6_group_has_nexthop(const struct mlxsw_sp_nexthop_group *nh_grp, | |
2620 | const struct in6_addr *gw, int ifindex) | |
2621 | { | |
2622 | int i; | |
2623 | ||
2624 | for (i = 0; i < nh_grp->count; i++) { | |
2625 | const struct mlxsw_sp_nexthop *nh; | |
2626 | ||
2627 | nh = &nh_grp->nexthops[i]; | |
2628 | if (nh->ifindex == ifindex && | |
2629 | ipv6_addr_equal(gw, (struct in6_addr *) nh->gw_addr)) | |
2630 | return true; | |
2631 | } | |
2632 | ||
2633 | return false; | |
2634 | } | |
2635 | ||
2636 | static bool | |
2637 | mlxsw_sp_nexthop6_group_cmp(const struct mlxsw_sp_nexthop_group *nh_grp, | |
2638 | const struct mlxsw_sp_fib6_entry *fib6_entry) | |
2639 | { | |
2640 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
2641 | ||
2642 | if (nh_grp->count != fib6_entry->nrt6) | |
2643 | return false; | |
2644 | ||
2645 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
2646 | struct in6_addr *gw; | |
2647 | int ifindex; | |
2648 | ||
2649 | ifindex = mlxsw_sp_rt6->rt->dst.dev->ifindex; | |
2650 | gw = &mlxsw_sp_rt6->rt->rt6i_gateway; | |
2651 | if (!mlxsw_sp_nexthop6_group_has_nexthop(nh_grp, gw, ifindex)) | |
2652 | return false; | |
2653 | } | |
2654 | ||
2655 | return true; | |
2656 | } | |
2657 | ||
ba31d366 AS |
2658 | static int |
2659 | mlxsw_sp_nexthop_group_cmp(struct rhashtable_compare_arg *arg, const void *ptr) | |
2660 | { | |
2661 | const struct mlxsw_sp_nexthop_group_cmp_arg *cmp_arg = arg->key; | |
2662 | const struct mlxsw_sp_nexthop_group *nh_grp = ptr; | |
2663 | ||
e6f3b379 AS |
2664 | switch (cmp_arg->proto) { |
2665 | case MLXSW_SP_L3_PROTO_IPV4: | |
2666 | return cmp_arg->fi != mlxsw_sp_nexthop4_group_fi(nh_grp); | |
2667 | case MLXSW_SP_L3_PROTO_IPV6: | |
2668 | return !mlxsw_sp_nexthop6_group_cmp(nh_grp, | |
2669 | cmp_arg->fib6_entry); | |
2670 | default: | |
2671 | WARN_ON(1); | |
2672 | return 1; | |
2673 | } | |
2674 | } | |
2675 | ||
2676 | static int | |
2677 | mlxsw_sp_nexthop_group_type(const struct mlxsw_sp_nexthop_group *nh_grp) | |
2678 | { | |
2679 | return nh_grp->neigh_tbl->family; | |
ba31d366 AS |
2680 | } |
2681 | ||
2682 | static u32 mlxsw_sp_nexthop_group_hash_obj(const void *data, u32 len, u32 seed) | |
2683 | { | |
2684 | const struct mlxsw_sp_nexthop_group *nh_grp = data; | |
e6f3b379 AS |
2685 | const struct mlxsw_sp_nexthop *nh; |
2686 | struct fib_info *fi; | |
2687 | unsigned int val; | |
2688 | int i; | |
ba31d366 | 2689 | |
e6f3b379 AS |
2690 | switch (mlxsw_sp_nexthop_group_type(nh_grp)) { |
2691 | case AF_INET: | |
2692 | fi = mlxsw_sp_nexthop4_group_fi(nh_grp); | |
2693 | return jhash(&fi, sizeof(fi), seed); | |
2694 | case AF_INET6: | |
2695 | val = nh_grp->count; | |
2696 | for (i = 0; i < nh_grp->count; i++) { | |
2697 | nh = &nh_grp->nexthops[i]; | |
2698 | val ^= nh->ifindex; | |
2699 | } | |
2700 | return jhash(&val, sizeof(val), seed); | |
2701 | default: | |
2702 | WARN_ON(1); | |
2703 | return 0; | |
2704 | } | |
2705 | } | |
2706 | ||
2707 | static u32 | |
2708 | mlxsw_sp_nexthop6_group_hash(struct mlxsw_sp_fib6_entry *fib6_entry, u32 seed) | |
2709 | { | |
2710 | unsigned int val = fib6_entry->nrt6; | |
2711 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
2712 | struct net_device *dev; | |
2713 | ||
2714 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
2715 | dev = mlxsw_sp_rt6->rt->dst.dev; | |
2716 | val ^= dev->ifindex; | |
2717 | } | |
2718 | ||
2719 | return jhash(&val, sizeof(val), seed); | |
ba31d366 AS |
2720 | } |
2721 | ||
2722 | static u32 | |
2723 | mlxsw_sp_nexthop_group_hash(const void *data, u32 len, u32 seed) | |
2724 | { | |
2725 | const struct mlxsw_sp_nexthop_group_cmp_arg *cmp_arg = data; | |
2726 | ||
e6f3b379 AS |
2727 | switch (cmp_arg->proto) { |
2728 | case MLXSW_SP_L3_PROTO_IPV4: | |
2729 | return jhash(&cmp_arg->fi, sizeof(cmp_arg->fi), seed); | |
2730 | case MLXSW_SP_L3_PROTO_IPV6: | |
2731 | return mlxsw_sp_nexthop6_group_hash(cmp_arg->fib6_entry, seed); | |
2732 | default: | |
2733 | WARN_ON(1); | |
2734 | return 0; | |
2735 | } | |
ba31d366 AS |
2736 | } |
2737 | ||
e9ad5e7d | 2738 | static const struct rhashtable_params mlxsw_sp_nexthop_group_ht_params = { |
e9ad5e7d | 2739 | .head_offset = offsetof(struct mlxsw_sp_nexthop_group, ht_node), |
ba31d366 AS |
2740 | .hashfn = mlxsw_sp_nexthop_group_hash, |
2741 | .obj_hashfn = mlxsw_sp_nexthop_group_hash_obj, | |
2742 | .obj_cmpfn = mlxsw_sp_nexthop_group_cmp, | |
e9ad5e7d IS |
2743 | }; |
2744 | ||
2745 | static int mlxsw_sp_nexthop_group_insert(struct mlxsw_sp *mlxsw_sp, | |
2746 | struct mlxsw_sp_nexthop_group *nh_grp) | |
2747 | { | |
e6f3b379 AS |
2748 | if (mlxsw_sp_nexthop_group_type(nh_grp) == AF_INET6 && |
2749 | !nh_grp->gateway) | |
2750 | return 0; | |
2751 | ||
9011b677 | 2752 | return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
2753 | &nh_grp->ht_node, |
2754 | mlxsw_sp_nexthop_group_ht_params); | |
2755 | } | |
2756 | ||
2757 | static void mlxsw_sp_nexthop_group_remove(struct mlxsw_sp *mlxsw_sp, | |
2758 | struct mlxsw_sp_nexthop_group *nh_grp) | |
2759 | { | |
e6f3b379 AS |
2760 | if (mlxsw_sp_nexthop_group_type(nh_grp) == AF_INET6 && |
2761 | !nh_grp->gateway) | |
2762 | return; | |
2763 | ||
9011b677 | 2764 | rhashtable_remove_fast(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
2765 | &nh_grp->ht_node, |
2766 | mlxsw_sp_nexthop_group_ht_params); | |
2767 | } | |
2768 | ||
2769 | static struct mlxsw_sp_nexthop_group * | |
ba31d366 AS |
2770 | mlxsw_sp_nexthop4_group_lookup(struct mlxsw_sp *mlxsw_sp, |
2771 | struct fib_info *fi) | |
e9ad5e7d | 2772 | { |
ba31d366 AS |
2773 | struct mlxsw_sp_nexthop_group_cmp_arg cmp_arg; |
2774 | ||
e6f3b379 | 2775 | cmp_arg.proto = MLXSW_SP_L3_PROTO_IPV4; |
ba31d366 AS |
2776 | cmp_arg.fi = fi; |
2777 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, | |
2778 | &cmp_arg, | |
e9ad5e7d IS |
2779 | mlxsw_sp_nexthop_group_ht_params); |
2780 | } | |
2781 | ||
e6f3b379 AS |
2782 | static struct mlxsw_sp_nexthop_group * |
2783 | mlxsw_sp_nexthop6_group_lookup(struct mlxsw_sp *mlxsw_sp, | |
2784 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
2785 | { | |
2786 | struct mlxsw_sp_nexthop_group_cmp_arg cmp_arg; | |
2787 | ||
2788 | cmp_arg.proto = MLXSW_SP_L3_PROTO_IPV6; | |
2789 | cmp_arg.fib6_entry = fib6_entry; | |
2790 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, | |
2791 | &cmp_arg, | |
2792 | mlxsw_sp_nexthop_group_ht_params); | |
2793 | } | |
2794 | ||
c53b8e1b IS |
2795 | static const struct rhashtable_params mlxsw_sp_nexthop_ht_params = { |
2796 | .key_offset = offsetof(struct mlxsw_sp_nexthop, key), | |
2797 | .head_offset = offsetof(struct mlxsw_sp_nexthop, ht_node), | |
2798 | .key_len = sizeof(struct mlxsw_sp_nexthop_key), | |
2799 | }; | |
2800 | ||
2801 | static int mlxsw_sp_nexthop_insert(struct mlxsw_sp *mlxsw_sp, | |
2802 | struct mlxsw_sp_nexthop *nh) | |
2803 | { | |
9011b677 | 2804 | return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_ht, |
c53b8e1b IS |
2805 | &nh->ht_node, mlxsw_sp_nexthop_ht_params); |
2806 | } | |
2807 | ||
2808 | static void mlxsw_sp_nexthop_remove(struct mlxsw_sp *mlxsw_sp, | |
2809 | struct mlxsw_sp_nexthop *nh) | |
2810 | { | |
9011b677 | 2811 | rhashtable_remove_fast(&mlxsw_sp->router->nexthop_ht, &nh->ht_node, |
c53b8e1b IS |
2812 | mlxsw_sp_nexthop_ht_params); |
2813 | } | |
2814 | ||
ad178c8e IS |
2815 | static struct mlxsw_sp_nexthop * |
2816 | mlxsw_sp_nexthop_lookup(struct mlxsw_sp *mlxsw_sp, | |
2817 | struct mlxsw_sp_nexthop_key key) | |
2818 | { | |
9011b677 | 2819 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_ht, &key, |
ad178c8e IS |
2820 | mlxsw_sp_nexthop_ht_params); |
2821 | } | |
2822 | ||
a7ff87ac | 2823 | static int mlxsw_sp_adj_index_mass_update_vr(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 2824 | const struct mlxsw_sp_fib *fib, |
a7ff87ac JP |
2825 | u32 adj_index, u16 ecmp_size, |
2826 | u32 new_adj_index, | |
2827 | u16 new_ecmp_size) | |
2828 | { | |
2829 | char raleu_pl[MLXSW_REG_RALEU_LEN]; | |
2830 | ||
1a9234e6 | 2831 | mlxsw_reg_raleu_pack(raleu_pl, |
76610ebb IS |
2832 | (enum mlxsw_reg_ralxx_protocol) fib->proto, |
2833 | fib->vr->id, adj_index, ecmp_size, new_adj_index, | |
1a9234e6 | 2834 | new_ecmp_size); |
a7ff87ac JP |
2835 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raleu), raleu_pl); |
2836 | } | |
2837 | ||
2838 | static int mlxsw_sp_adj_index_mass_update(struct mlxsw_sp *mlxsw_sp, | |
2839 | struct mlxsw_sp_nexthop_group *nh_grp, | |
2840 | u32 old_adj_index, u16 old_ecmp_size) | |
2841 | { | |
2842 | struct mlxsw_sp_fib_entry *fib_entry; | |
76610ebb | 2843 | struct mlxsw_sp_fib *fib = NULL; |
a7ff87ac JP |
2844 | int err; |
2845 | ||
2846 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
76610ebb | 2847 | if (fib == fib_entry->fib_node->fib) |
a7ff87ac | 2848 | continue; |
76610ebb IS |
2849 | fib = fib_entry->fib_node->fib; |
2850 | err = mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, fib, | |
a7ff87ac JP |
2851 | old_adj_index, |
2852 | old_ecmp_size, | |
2853 | nh_grp->adj_index, | |
2854 | nh_grp->ecmp_size); | |
2855 | if (err) | |
2856 | return err; | |
2857 | } | |
2858 | return 0; | |
2859 | } | |
2860 | ||
eb789980 IS |
2861 | static int __mlxsw_sp_nexthop_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, |
2862 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
2863 | { |
2864 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
2865 | char ratr_pl[MLXSW_REG_RATR_LEN]; | |
2866 | ||
2867 | mlxsw_reg_ratr_pack(ratr_pl, MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY, | |
89e41982 PM |
2868 | true, MLXSW_REG_RATR_TYPE_ETHERNET, |
2869 | adj_index, neigh_entry->rif); | |
a7ff87ac | 2870 | mlxsw_reg_ratr_eth_entry_pack(ratr_pl, neigh_entry->ha); |
a5390278 AS |
2871 | if (nh->counter_valid) |
2872 | mlxsw_reg_ratr_counter_pack(ratr_pl, nh->counter_index, true); | |
2873 | else | |
2874 | mlxsw_reg_ratr_counter_pack(ratr_pl, 0, false); | |
2875 | ||
a7ff87ac JP |
2876 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl); |
2877 | } | |
2878 | ||
eb789980 IS |
2879 | int mlxsw_sp_nexthop_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, |
2880 | struct mlxsw_sp_nexthop *nh) | |
2881 | { | |
2882 | int i; | |
2883 | ||
2884 | for (i = 0; i < nh->num_adj_entries; i++) { | |
2885 | int err; | |
2886 | ||
2887 | err = __mlxsw_sp_nexthop_update(mlxsw_sp, adj_index + i, nh); | |
2888 | if (err) | |
2889 | return err; | |
2890 | } | |
2891 | ||
2892 | return 0; | |
2893 | } | |
2894 | ||
2895 | static int __mlxsw_sp_nexthop_ipip_update(struct mlxsw_sp *mlxsw_sp, | |
2896 | u32 adj_index, | |
2897 | struct mlxsw_sp_nexthop *nh) | |
1012b9ac PM |
2898 | { |
2899 | const struct mlxsw_sp_ipip_ops *ipip_ops; | |
2900 | ||
2901 | ipip_ops = mlxsw_sp->router->ipip_ops_arr[nh->ipip_entry->ipipt]; | |
2902 | return ipip_ops->nexthop_update(mlxsw_sp, adj_index, nh->ipip_entry); | |
2903 | } | |
2904 | ||
eb789980 IS |
2905 | static int mlxsw_sp_nexthop_ipip_update(struct mlxsw_sp *mlxsw_sp, |
2906 | u32 adj_index, | |
2907 | struct mlxsw_sp_nexthop *nh) | |
2908 | { | |
2909 | int i; | |
2910 | ||
2911 | for (i = 0; i < nh->num_adj_entries; i++) { | |
2912 | int err; | |
2913 | ||
2914 | err = __mlxsw_sp_nexthop_ipip_update(mlxsw_sp, adj_index + i, | |
2915 | nh); | |
2916 | if (err) | |
2917 | return err; | |
2918 | } | |
2919 | ||
2920 | return 0; | |
2921 | } | |
2922 | ||
a7ff87ac | 2923 | static int |
35225e47 PM |
2924 | mlxsw_sp_nexthop_group_update(struct mlxsw_sp *mlxsw_sp, |
2925 | struct mlxsw_sp_nexthop_group *nh_grp, | |
2926 | bool reallocate) | |
a7ff87ac JP |
2927 | { |
2928 | u32 adj_index = nh_grp->adj_index; /* base */ | |
2929 | struct mlxsw_sp_nexthop *nh; | |
2930 | int i; | |
2931 | int err; | |
2932 | ||
2933 | for (i = 0; i < nh_grp->count; i++) { | |
2934 | nh = &nh_grp->nexthops[i]; | |
2935 | ||
2936 | if (!nh->should_offload) { | |
2937 | nh->offloaded = 0; | |
2938 | continue; | |
2939 | } | |
2940 | ||
a59b7e02 | 2941 | if (nh->update || reallocate) { |
35225e47 PM |
2942 | switch (nh->type) { |
2943 | case MLXSW_SP_NEXTHOP_TYPE_ETH: | |
a5390278 | 2944 | err = mlxsw_sp_nexthop_update |
35225e47 PM |
2945 | (mlxsw_sp, adj_index, nh); |
2946 | break; | |
1012b9ac PM |
2947 | case MLXSW_SP_NEXTHOP_TYPE_IPIP: |
2948 | err = mlxsw_sp_nexthop_ipip_update | |
2949 | (mlxsw_sp, adj_index, nh); | |
2950 | break; | |
35225e47 | 2951 | } |
a7ff87ac JP |
2952 | if (err) |
2953 | return err; | |
2954 | nh->update = 0; | |
2955 | nh->offloaded = 1; | |
2956 | } | |
eb789980 | 2957 | adj_index += nh->num_adj_entries; |
a7ff87ac JP |
2958 | } |
2959 | return 0; | |
2960 | } | |
2961 | ||
1819ae3d IS |
2962 | static bool |
2963 | mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node, | |
2964 | const struct mlxsw_sp_fib_entry *fib_entry); | |
2965 | ||
a7ff87ac JP |
2966 | static int |
2967 | mlxsw_sp_nexthop_fib_entries_update(struct mlxsw_sp *mlxsw_sp, | |
2968 | struct mlxsw_sp_nexthop_group *nh_grp) | |
2969 | { | |
2970 | struct mlxsw_sp_fib_entry *fib_entry; | |
2971 | int err; | |
2972 | ||
2973 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
1819ae3d IS |
2974 | if (!mlxsw_sp_fib_node_entry_is_first(fib_entry->fib_node, |
2975 | fib_entry)) | |
2976 | continue; | |
a7ff87ac JP |
2977 | err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); |
2978 | if (err) | |
2979 | return err; | |
2980 | } | |
2981 | return 0; | |
2982 | } | |
2983 | ||
77d964e6 IS |
2984 | static void |
2985 | mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry, | |
2986 | enum mlxsw_reg_ralue_op op, int err); | |
2987 | ||
2988 | static void | |
2989 | mlxsw_sp_nexthop_fib_entries_refresh(struct mlxsw_sp_nexthop_group *nh_grp) | |
2990 | { | |
2991 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_WRITE; | |
2992 | struct mlxsw_sp_fib_entry *fib_entry; | |
2993 | ||
2994 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
2995 | if (!mlxsw_sp_fib_node_entry_is_first(fib_entry->fib_node, | |
2996 | fib_entry)) | |
2997 | continue; | |
2998 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0); | |
2999 | } | |
3000 | } | |
3001 | ||
425a08c6 IS |
3002 | static void mlxsw_sp_adj_grp_size_round_up(u16 *p_adj_grp_size) |
3003 | { | |
3004 | /* Valid sizes for an adjacency group are: | |
3005 | * 1-64, 512, 1024, 2048 and 4096. | |
3006 | */ | |
3007 | if (*p_adj_grp_size <= 64) | |
3008 | return; | |
3009 | else if (*p_adj_grp_size <= 512) | |
3010 | *p_adj_grp_size = 512; | |
3011 | else if (*p_adj_grp_size <= 1024) | |
3012 | *p_adj_grp_size = 1024; | |
3013 | else if (*p_adj_grp_size <= 2048) | |
3014 | *p_adj_grp_size = 2048; | |
3015 | else | |
3016 | *p_adj_grp_size = 4096; | |
3017 | } | |
3018 | ||
3019 | static void mlxsw_sp_adj_grp_size_round_down(u16 *p_adj_grp_size, | |
3020 | unsigned int alloc_size) | |
3021 | { | |
3022 | if (alloc_size >= 4096) | |
3023 | *p_adj_grp_size = 4096; | |
3024 | else if (alloc_size >= 2048) | |
3025 | *p_adj_grp_size = 2048; | |
3026 | else if (alloc_size >= 1024) | |
3027 | *p_adj_grp_size = 1024; | |
3028 | else if (alloc_size >= 512) | |
3029 | *p_adj_grp_size = 512; | |
3030 | } | |
3031 | ||
3032 | static int mlxsw_sp_fix_adj_grp_size(struct mlxsw_sp *mlxsw_sp, | |
3033 | u16 *p_adj_grp_size) | |
3034 | { | |
3035 | unsigned int alloc_size; | |
3036 | int err; | |
3037 | ||
3038 | /* Round up the requested group size to the next size supported | |
3039 | * by the device and make sure the request can be satisfied. | |
3040 | */ | |
3041 | mlxsw_sp_adj_grp_size_round_up(p_adj_grp_size); | |
3042 | err = mlxsw_sp_kvdl_alloc_size_query(mlxsw_sp, *p_adj_grp_size, | |
3043 | &alloc_size); | |
3044 | if (err) | |
3045 | return err; | |
3046 | /* It is possible the allocation results in more allocated | |
3047 | * entries than requested. Try to use as much of them as | |
3048 | * possible. | |
3049 | */ | |
3050 | mlxsw_sp_adj_grp_size_round_down(p_adj_grp_size, alloc_size); | |
3051 | ||
3052 | return 0; | |
3053 | } | |
3054 | ||
eb789980 IS |
3055 | static void |
3056 | mlxsw_sp_nexthop_group_normalize(struct mlxsw_sp_nexthop_group *nh_grp) | |
3057 | { | |
3058 | int i, g = 0, sum_norm_weight = 0; | |
3059 | struct mlxsw_sp_nexthop *nh; | |
3060 | ||
3061 | for (i = 0; i < nh_grp->count; i++) { | |
3062 | nh = &nh_grp->nexthops[i]; | |
3063 | ||
3064 | if (!nh->should_offload) | |
3065 | continue; | |
3066 | if (g > 0) | |
3067 | g = gcd(nh->nh_weight, g); | |
3068 | else | |
3069 | g = nh->nh_weight; | |
3070 | } | |
3071 | ||
3072 | for (i = 0; i < nh_grp->count; i++) { | |
3073 | nh = &nh_grp->nexthops[i]; | |
3074 | ||
3075 | if (!nh->should_offload) | |
3076 | continue; | |
3077 | nh->norm_nh_weight = nh->nh_weight / g; | |
3078 | sum_norm_weight += nh->norm_nh_weight; | |
3079 | } | |
3080 | ||
3081 | nh_grp->sum_norm_weight = sum_norm_weight; | |
3082 | } | |
3083 | ||
3084 | static void | |
3085 | mlxsw_sp_nexthop_group_rebalance(struct mlxsw_sp_nexthop_group *nh_grp) | |
3086 | { | |
3087 | int total = nh_grp->sum_norm_weight; | |
3088 | u16 ecmp_size = nh_grp->ecmp_size; | |
3089 | int i, weight = 0, lower_bound = 0; | |
3090 | ||
3091 | for (i = 0; i < nh_grp->count; i++) { | |
3092 | struct mlxsw_sp_nexthop *nh = &nh_grp->nexthops[i]; | |
3093 | int upper_bound; | |
3094 | ||
3095 | if (!nh->should_offload) | |
3096 | continue; | |
3097 | weight += nh->norm_nh_weight; | |
3098 | upper_bound = DIV_ROUND_CLOSEST(ecmp_size * weight, total); | |
3099 | nh->num_adj_entries = upper_bound - lower_bound; | |
3100 | lower_bound = upper_bound; | |
3101 | } | |
3102 | } | |
3103 | ||
a7ff87ac JP |
3104 | static void |
3105 | mlxsw_sp_nexthop_group_refresh(struct mlxsw_sp *mlxsw_sp, | |
3106 | struct mlxsw_sp_nexthop_group *nh_grp) | |
3107 | { | |
eb789980 | 3108 | u16 ecmp_size, old_ecmp_size; |
a7ff87ac JP |
3109 | struct mlxsw_sp_nexthop *nh; |
3110 | bool offload_change = false; | |
3111 | u32 adj_index; | |
a7ff87ac JP |
3112 | bool old_adj_index_valid; |
3113 | u32 old_adj_index; | |
a7ff87ac JP |
3114 | int i; |
3115 | int err; | |
3116 | ||
b3e8d1eb IS |
3117 | if (!nh_grp->gateway) { |
3118 | mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
3119 | return; | |
3120 | } | |
3121 | ||
a7ff87ac JP |
3122 | for (i = 0; i < nh_grp->count; i++) { |
3123 | nh = &nh_grp->nexthops[i]; | |
3124 | ||
56b8a9ed | 3125 | if (nh->should_offload != nh->offloaded) { |
a7ff87ac JP |
3126 | offload_change = true; |
3127 | if (nh->should_offload) | |
3128 | nh->update = 1; | |
3129 | } | |
a7ff87ac JP |
3130 | } |
3131 | if (!offload_change) { | |
3132 | /* Nothing was added or removed, so no need to reallocate. Just | |
3133 | * update MAC on existing adjacency indexes. | |
3134 | */ | |
35225e47 | 3135 | err = mlxsw_sp_nexthop_group_update(mlxsw_sp, nh_grp, false); |
a7ff87ac JP |
3136 | if (err) { |
3137 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
3138 | goto set_trap; | |
3139 | } | |
3140 | return; | |
3141 | } | |
eb789980 IS |
3142 | mlxsw_sp_nexthop_group_normalize(nh_grp); |
3143 | if (!nh_grp->sum_norm_weight) | |
a7ff87ac JP |
3144 | /* No neigh of this group is connected so we just set |
3145 | * the trap and let everthing flow through kernel. | |
3146 | */ | |
3147 | goto set_trap; | |
3148 | ||
eb789980 | 3149 | ecmp_size = nh_grp->sum_norm_weight; |
425a08c6 IS |
3150 | err = mlxsw_sp_fix_adj_grp_size(mlxsw_sp, &ecmp_size); |
3151 | if (err) | |
3152 | /* No valid allocation size available. */ | |
3153 | goto set_trap; | |
3154 | ||
13124443 AS |
3155 | err = mlxsw_sp_kvdl_alloc(mlxsw_sp, ecmp_size, &adj_index); |
3156 | if (err) { | |
a7ff87ac JP |
3157 | /* We ran out of KVD linear space, just set the |
3158 | * trap and let everything flow through kernel. | |
3159 | */ | |
3160 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to allocate KVD linear area for nexthop group.\n"); | |
3161 | goto set_trap; | |
3162 | } | |
a7ff87ac JP |
3163 | old_adj_index_valid = nh_grp->adj_index_valid; |
3164 | old_adj_index = nh_grp->adj_index; | |
3165 | old_ecmp_size = nh_grp->ecmp_size; | |
3166 | nh_grp->adj_index_valid = 1; | |
3167 | nh_grp->adj_index = adj_index; | |
3168 | nh_grp->ecmp_size = ecmp_size; | |
eb789980 | 3169 | mlxsw_sp_nexthop_group_rebalance(nh_grp); |
35225e47 | 3170 | err = mlxsw_sp_nexthop_group_update(mlxsw_sp, nh_grp, true); |
a7ff87ac JP |
3171 | if (err) { |
3172 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
3173 | goto set_trap; | |
3174 | } | |
3175 | ||
3176 | if (!old_adj_index_valid) { | |
3177 | /* The trap was set for fib entries, so we have to call | |
3178 | * fib entry update to unset it and use adjacency index. | |
3179 | */ | |
3180 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
3181 | if (err) { | |
3182 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to add adjacency index to fib entries.\n"); | |
3183 | goto set_trap; | |
3184 | } | |
3185 | return; | |
3186 | } | |
3187 | ||
3188 | err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, nh_grp, | |
3189 | old_adj_index, old_ecmp_size); | |
3190 | mlxsw_sp_kvdl_free(mlxsw_sp, old_adj_index); | |
3191 | if (err) { | |
3192 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to mass-update adjacency index for nexthop group.\n"); | |
3193 | goto set_trap; | |
3194 | } | |
77d964e6 IS |
3195 | |
3196 | /* Offload state within the group changed, so update the flags. */ | |
3197 | mlxsw_sp_nexthop_fib_entries_refresh(nh_grp); | |
3198 | ||
a7ff87ac JP |
3199 | return; |
3200 | ||
3201 | set_trap: | |
3202 | old_adj_index_valid = nh_grp->adj_index_valid; | |
3203 | nh_grp->adj_index_valid = 0; | |
3204 | for (i = 0; i < nh_grp->count; i++) { | |
3205 | nh = &nh_grp->nexthops[i]; | |
3206 | nh->offloaded = 0; | |
3207 | } | |
3208 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
3209 | if (err) | |
3210 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set traps for fib entries.\n"); | |
3211 | if (old_adj_index_valid) | |
3212 | mlxsw_sp_kvdl_free(mlxsw_sp, nh_grp->adj_index); | |
3213 | } | |
3214 | ||
3215 | static void __mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp_nexthop *nh, | |
3216 | bool removing) | |
3217 | { | |
213666a3 | 3218 | if (!removing) |
a7ff87ac | 3219 | nh->should_offload = 1; |
213666a3 | 3220 | else if (nh->offloaded) |
a7ff87ac JP |
3221 | nh->should_offload = 0; |
3222 | nh->update = 1; | |
3223 | } | |
3224 | ||
3225 | static void | |
3226 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
3227 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
3228 | bool removing) | |
3229 | { | |
3230 | struct mlxsw_sp_nexthop *nh; | |
3231 | ||
a7ff87ac JP |
3232 | list_for_each_entry(nh, &neigh_entry->nexthop_list, |
3233 | neigh_list_node) { | |
3234 | __mlxsw_sp_nexthop_neigh_update(nh, removing); | |
3235 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
3236 | } | |
a7ff87ac JP |
3237 | } |
3238 | ||
9665b745 | 3239 | static void mlxsw_sp_nexthop_rif_init(struct mlxsw_sp_nexthop *nh, |
bf95233e | 3240 | struct mlxsw_sp_rif *rif) |
9665b745 | 3241 | { |
bf95233e | 3242 | if (nh->rif) |
9665b745 IS |
3243 | return; |
3244 | ||
bf95233e AS |
3245 | nh->rif = rif; |
3246 | list_add(&nh->rif_list_node, &rif->nexthop_list); | |
9665b745 IS |
3247 | } |
3248 | ||
3249 | static void mlxsw_sp_nexthop_rif_fini(struct mlxsw_sp_nexthop *nh) | |
3250 | { | |
bf95233e | 3251 | if (!nh->rif) |
9665b745 IS |
3252 | return; |
3253 | ||
3254 | list_del(&nh->rif_list_node); | |
bf95233e | 3255 | nh->rif = NULL; |
9665b745 IS |
3256 | } |
3257 | ||
a8c97014 IS |
3258 | static int mlxsw_sp_nexthop_neigh_init(struct mlxsw_sp *mlxsw_sp, |
3259 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
3260 | { |
3261 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
a7ff87ac | 3262 | struct neighbour *n; |
93a87e5e | 3263 | u8 nud_state, dead; |
c53b8e1b IS |
3264 | int err; |
3265 | ||
ad178c8e | 3266 | if (!nh->nh_grp->gateway || nh->neigh_entry) |
b8399a1e IS |
3267 | return 0; |
3268 | ||
33b1341c | 3269 | /* Take a reference of neigh here ensuring that neigh would |
8de3c178 | 3270 | * not be destructed before the nexthop entry is finished. |
33b1341c | 3271 | * The reference is taken either in neigh_lookup() or |
fd76d910 | 3272 | * in neigh_create() in case n is not found. |
33b1341c | 3273 | */ |
58adf2c4 | 3274 | n = neigh_lookup(nh->nh_grp->neigh_tbl, &nh->gw_addr, nh->rif->dev); |
33b1341c | 3275 | if (!n) { |
58adf2c4 IS |
3276 | n = neigh_create(nh->nh_grp->neigh_tbl, &nh->gw_addr, |
3277 | nh->rif->dev); | |
a8c97014 IS |
3278 | if (IS_ERR(n)) |
3279 | return PTR_ERR(n); | |
a7ff87ac | 3280 | neigh_event_send(n, NULL); |
33b1341c JP |
3281 | } |
3282 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); | |
3283 | if (!neigh_entry) { | |
5c8802f1 IS |
3284 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); |
3285 | if (IS_ERR(neigh_entry)) { | |
c53b8e1b IS |
3286 | err = -EINVAL; |
3287 | goto err_neigh_entry_create; | |
5c8802f1 | 3288 | } |
a7ff87ac | 3289 | } |
b2157149 YG |
3290 | |
3291 | /* If that is the first nexthop connected to that neigh, add to | |
3292 | * nexthop_neighs_list | |
3293 | */ | |
3294 | if (list_empty(&neigh_entry->nexthop_list)) | |
3295 | list_add_tail(&neigh_entry->nexthop_neighs_list_node, | |
9011b677 | 3296 | &mlxsw_sp->router->nexthop_neighs_list); |
b2157149 | 3297 | |
a7ff87ac JP |
3298 | nh->neigh_entry = neigh_entry; |
3299 | list_add_tail(&nh->neigh_list_node, &neigh_entry->nexthop_list); | |
3300 | read_lock_bh(&n->lock); | |
3301 | nud_state = n->nud_state; | |
93a87e5e | 3302 | dead = n->dead; |
a7ff87ac | 3303 | read_unlock_bh(&n->lock); |
93a87e5e | 3304 | __mlxsw_sp_nexthop_neigh_update(nh, !(nud_state & NUD_VALID && !dead)); |
a7ff87ac JP |
3305 | |
3306 | return 0; | |
c53b8e1b IS |
3307 | |
3308 | err_neigh_entry_create: | |
3309 | neigh_release(n); | |
c53b8e1b | 3310 | return err; |
a7ff87ac JP |
3311 | } |
3312 | ||
a8c97014 IS |
3313 | static void mlxsw_sp_nexthop_neigh_fini(struct mlxsw_sp *mlxsw_sp, |
3314 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
3315 | { |
3316 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
a8c97014 | 3317 | struct neighbour *n; |
a7ff87ac | 3318 | |
b8399a1e | 3319 | if (!neigh_entry) |
a8c97014 IS |
3320 | return; |
3321 | n = neigh_entry->key.n; | |
b8399a1e | 3322 | |
58312125 | 3323 | __mlxsw_sp_nexthop_neigh_update(nh, true); |
a7ff87ac | 3324 | list_del(&nh->neigh_list_node); |
e58be79e | 3325 | nh->neigh_entry = NULL; |
b2157149 YG |
3326 | |
3327 | /* If that is the last nexthop connected to that neigh, remove from | |
3328 | * nexthop_neighs_list | |
3329 | */ | |
e58be79e IS |
3330 | if (list_empty(&neigh_entry->nexthop_list)) |
3331 | list_del(&neigh_entry->nexthop_neighs_list_node); | |
b2157149 | 3332 | |
5c8802f1 IS |
3333 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) |
3334 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
3335 | ||
3336 | neigh_release(n); | |
a8c97014 | 3337 | } |
c53b8e1b | 3338 | |
44b0fff1 PM |
3339 | static bool mlxsw_sp_ipip_netdev_ul_up(struct net_device *ol_dev) |
3340 | { | |
3341 | struct net_device *ul_dev = __mlxsw_sp_ipip_netdev_ul_dev_get(ol_dev); | |
3342 | ||
3343 | return ul_dev ? (ul_dev->flags & IFF_UP) : true; | |
3344 | } | |
3345 | ||
1012b9ac | 3346 | static int mlxsw_sp_nexthop_ipip_init(struct mlxsw_sp *mlxsw_sp, |
1012b9ac PM |
3347 | struct mlxsw_sp_nexthop *nh, |
3348 | struct net_device *ol_dev) | |
3349 | { | |
44b0fff1 PM |
3350 | bool removing; |
3351 | ||
1012b9ac PM |
3352 | if (!nh->nh_grp->gateway || nh->ipip_entry) |
3353 | return 0; | |
3354 | ||
4cccb737 PM |
3355 | nh->ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); |
3356 | if (!nh->ipip_entry) | |
3357 | return -ENOENT; | |
1012b9ac | 3358 | |
44b0fff1 PM |
3359 | removing = !mlxsw_sp_ipip_netdev_ul_up(ol_dev); |
3360 | __mlxsw_sp_nexthop_neigh_update(nh, removing); | |
1012b9ac PM |
3361 | return 0; |
3362 | } | |
3363 | ||
3364 | static void mlxsw_sp_nexthop_ipip_fini(struct mlxsw_sp *mlxsw_sp, | |
3365 | struct mlxsw_sp_nexthop *nh) | |
3366 | { | |
3367 | struct mlxsw_sp_ipip_entry *ipip_entry = nh->ipip_entry; | |
3368 | ||
3369 | if (!ipip_entry) | |
3370 | return; | |
3371 | ||
3372 | __mlxsw_sp_nexthop_neigh_update(nh, true); | |
1012b9ac PM |
3373 | nh->ipip_entry = NULL; |
3374 | } | |
3375 | ||
3376 | static bool mlxsw_sp_nexthop4_ipip_type(const struct mlxsw_sp *mlxsw_sp, | |
3377 | const struct fib_nh *fib_nh, | |
3378 | enum mlxsw_sp_ipip_type *p_ipipt) | |
3379 | { | |
3380 | struct net_device *dev = fib_nh->nh_dev; | |
3381 | ||
3382 | return dev && | |
3383 | fib_nh->nh_parent->fib_type == RTN_UNICAST && | |
3384 | mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, p_ipipt); | |
3385 | } | |
3386 | ||
35225e47 PM |
3387 | static void mlxsw_sp_nexthop_type_fini(struct mlxsw_sp *mlxsw_sp, |
3388 | struct mlxsw_sp_nexthop *nh) | |
3389 | { | |
3390 | switch (nh->type) { | |
3391 | case MLXSW_SP_NEXTHOP_TYPE_ETH: | |
3392 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
3393 | mlxsw_sp_nexthop_rif_fini(nh); | |
3394 | break; | |
1012b9ac | 3395 | case MLXSW_SP_NEXTHOP_TYPE_IPIP: |
de0f43c0 | 3396 | mlxsw_sp_nexthop_rif_fini(nh); |
1012b9ac PM |
3397 | mlxsw_sp_nexthop_ipip_fini(mlxsw_sp, nh); |
3398 | break; | |
35225e47 PM |
3399 | } |
3400 | } | |
3401 | ||
3402 | static int mlxsw_sp_nexthop4_type_init(struct mlxsw_sp *mlxsw_sp, | |
3403 | struct mlxsw_sp_nexthop *nh, | |
3404 | struct fib_nh *fib_nh) | |
3405 | { | |
1012b9ac | 3406 | struct mlxsw_sp_router *router = mlxsw_sp->router; |
35225e47 | 3407 | struct net_device *dev = fib_nh->nh_dev; |
1012b9ac | 3408 | enum mlxsw_sp_ipip_type ipipt; |
35225e47 PM |
3409 | struct mlxsw_sp_rif *rif; |
3410 | int err; | |
3411 | ||
1012b9ac PM |
3412 | if (mlxsw_sp_nexthop4_ipip_type(mlxsw_sp, fib_nh, &ipipt) && |
3413 | router->ipip_ops_arr[ipipt]->can_offload(mlxsw_sp, dev, | |
3414 | MLXSW_SP_L3_PROTO_IPV4)) { | |
3415 | nh->type = MLXSW_SP_NEXTHOP_TYPE_IPIP; | |
4cccb737 | 3416 | err = mlxsw_sp_nexthop_ipip_init(mlxsw_sp, nh, dev); |
de0f43c0 PM |
3417 | if (err) |
3418 | return err; | |
3419 | mlxsw_sp_nexthop_rif_init(nh, &nh->ipip_entry->ol_lb->common); | |
3420 | return 0; | |
1012b9ac PM |
3421 | } |
3422 | ||
35225e47 PM |
3423 | nh->type = MLXSW_SP_NEXTHOP_TYPE_ETH; |
3424 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
3425 | if (!rif) | |
3426 | return 0; | |
3427 | ||
3428 | mlxsw_sp_nexthop_rif_init(nh, rif); | |
3429 | err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); | |
3430 | if (err) | |
3431 | goto err_neigh_init; | |
3432 | ||
3433 | return 0; | |
3434 | ||
3435 | err_neigh_init: | |
3436 | mlxsw_sp_nexthop_rif_fini(nh); | |
3437 | return err; | |
3438 | } | |
3439 | ||
3440 | static void mlxsw_sp_nexthop4_type_fini(struct mlxsw_sp *mlxsw_sp, | |
3441 | struct mlxsw_sp_nexthop *nh) | |
3442 | { | |
3443 | mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh); | |
3444 | } | |
3445 | ||
0e6ea2a4 IS |
3446 | static int mlxsw_sp_nexthop4_init(struct mlxsw_sp *mlxsw_sp, |
3447 | struct mlxsw_sp_nexthop_group *nh_grp, | |
3448 | struct mlxsw_sp_nexthop *nh, | |
3449 | struct fib_nh *fib_nh) | |
a8c97014 IS |
3450 | { |
3451 | struct net_device *dev = fib_nh->nh_dev; | |
df6dd79b | 3452 | struct in_device *in_dev; |
a8c97014 IS |
3453 | int err; |
3454 | ||
3455 | nh->nh_grp = nh_grp; | |
3456 | nh->key.fib_nh = fib_nh; | |
408bd946 IS |
3457 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
3458 | nh->nh_weight = fib_nh->nh_weight; | |
3459 | #else | |
3460 | nh->nh_weight = 1; | |
3461 | #endif | |
58adf2c4 | 3462 | memcpy(&nh->gw_addr, &fib_nh->nh_gw, sizeof(fib_nh->nh_gw)); |
a8c97014 IS |
3463 | err = mlxsw_sp_nexthop_insert(mlxsw_sp, nh); |
3464 | if (err) | |
3465 | return err; | |
3466 | ||
a5390278 | 3467 | mlxsw_sp_nexthop_counter_alloc(mlxsw_sp, nh); |
dbe4598c AS |
3468 | list_add_tail(&nh->router_list_node, &mlxsw_sp->router->nexthop_list); |
3469 | ||
97989ee0 IS |
3470 | if (!dev) |
3471 | return 0; | |
3472 | ||
df6dd79b IS |
3473 | in_dev = __in_dev_get_rtnl(dev); |
3474 | if (in_dev && IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) && | |
3475 | fib_nh->nh_flags & RTNH_F_LINKDOWN) | |
3476 | return 0; | |
3477 | ||
35225e47 | 3478 | err = mlxsw_sp_nexthop4_type_init(mlxsw_sp, nh, fib_nh); |
a8c97014 IS |
3479 | if (err) |
3480 | goto err_nexthop_neigh_init; | |
3481 | ||
3482 | return 0; | |
3483 | ||
3484 | err_nexthop_neigh_init: | |
3485 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); | |
3486 | return err; | |
3487 | } | |
3488 | ||
0e6ea2a4 IS |
3489 | static void mlxsw_sp_nexthop4_fini(struct mlxsw_sp *mlxsw_sp, |
3490 | struct mlxsw_sp_nexthop *nh) | |
a8c97014 | 3491 | { |
35225e47 | 3492 | mlxsw_sp_nexthop4_type_fini(mlxsw_sp, nh); |
dbe4598c | 3493 | list_del(&nh->router_list_node); |
a5390278 | 3494 | mlxsw_sp_nexthop_counter_free(mlxsw_sp, nh); |
c53b8e1b | 3495 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); |
a7ff87ac JP |
3496 | } |
3497 | ||
0e6ea2a4 IS |
3498 | static void mlxsw_sp_nexthop4_event(struct mlxsw_sp *mlxsw_sp, |
3499 | unsigned long event, struct fib_nh *fib_nh) | |
ad178c8e IS |
3500 | { |
3501 | struct mlxsw_sp_nexthop_key key; | |
3502 | struct mlxsw_sp_nexthop *nh; | |
ad178c8e | 3503 | |
9011b677 | 3504 | if (mlxsw_sp->router->aborted) |
ad178c8e IS |
3505 | return; |
3506 | ||
3507 | key.fib_nh = fib_nh; | |
3508 | nh = mlxsw_sp_nexthop_lookup(mlxsw_sp, key); | |
3509 | if (WARN_ON_ONCE(!nh)) | |
3510 | return; | |
3511 | ||
ad178c8e IS |
3512 | switch (event) { |
3513 | case FIB_EVENT_NH_ADD: | |
35225e47 | 3514 | mlxsw_sp_nexthop4_type_init(mlxsw_sp, nh, fib_nh); |
ad178c8e IS |
3515 | break; |
3516 | case FIB_EVENT_NH_DEL: | |
35225e47 | 3517 | mlxsw_sp_nexthop4_type_fini(mlxsw_sp, nh); |
ad178c8e IS |
3518 | break; |
3519 | } | |
3520 | ||
3521 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
3522 | } | |
3523 | ||
0c5f1cd5 PM |
3524 | static void mlxsw_sp_nexthop_rif_update(struct mlxsw_sp *mlxsw_sp, |
3525 | struct mlxsw_sp_rif *rif) | |
3526 | { | |
3527 | struct mlxsw_sp_nexthop *nh; | |
44b0fff1 | 3528 | bool removing; |
0c5f1cd5 PM |
3529 | |
3530 | list_for_each_entry(nh, &rif->nexthop_list, rif_list_node) { | |
44b0fff1 PM |
3531 | switch (nh->type) { |
3532 | case MLXSW_SP_NEXTHOP_TYPE_ETH: | |
3533 | removing = false; | |
3534 | break; | |
3535 | case MLXSW_SP_NEXTHOP_TYPE_IPIP: | |
3536 | removing = !mlxsw_sp_ipip_netdev_ul_up(rif->dev); | |
3537 | break; | |
3538 | default: | |
3539 | WARN_ON(1); | |
3540 | continue; | |
3541 | } | |
3542 | ||
3543 | __mlxsw_sp_nexthop_neigh_update(nh, removing); | |
0c5f1cd5 PM |
3544 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); |
3545 | } | |
3546 | } | |
3547 | ||
9665b745 | 3548 | static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, |
bf95233e | 3549 | struct mlxsw_sp_rif *rif) |
9665b745 IS |
3550 | { |
3551 | struct mlxsw_sp_nexthop *nh, *tmp; | |
3552 | ||
bf95233e | 3553 | list_for_each_entry_safe(nh, tmp, &rif->nexthop_list, rif_list_node) { |
35225e47 | 3554 | mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh); |
9665b745 IS |
3555 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); |
3556 | } | |
3557 | } | |
3558 | ||
9b01451a PM |
3559 | static bool mlxsw_sp_fi_is_gateway(const struct mlxsw_sp *mlxsw_sp, |
3560 | const struct fib_info *fi) | |
3561 | { | |
1012b9ac PM |
3562 | return fi->fib_nh->nh_scope == RT_SCOPE_LINK || |
3563 | mlxsw_sp_nexthop4_ipip_type(mlxsw_sp, fi->fib_nh, NULL); | |
9b01451a PM |
3564 | } |
3565 | ||
a7ff87ac | 3566 | static struct mlxsw_sp_nexthop_group * |
0e6ea2a4 | 3567 | mlxsw_sp_nexthop4_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi) |
a7ff87ac JP |
3568 | { |
3569 | struct mlxsw_sp_nexthop_group *nh_grp; | |
3570 | struct mlxsw_sp_nexthop *nh; | |
3571 | struct fib_nh *fib_nh; | |
3572 | size_t alloc_size; | |
3573 | int i; | |
3574 | int err; | |
3575 | ||
3576 | alloc_size = sizeof(*nh_grp) + | |
3577 | fi->fib_nhs * sizeof(struct mlxsw_sp_nexthop); | |
3578 | nh_grp = kzalloc(alloc_size, GFP_KERNEL); | |
3579 | if (!nh_grp) | |
3580 | return ERR_PTR(-ENOMEM); | |
ba31d366 | 3581 | nh_grp->priv = fi; |
a7ff87ac | 3582 | INIT_LIST_HEAD(&nh_grp->fib_list); |
58adf2c4 IS |
3583 | nh_grp->neigh_tbl = &arp_tbl; |
3584 | ||
9b01451a | 3585 | nh_grp->gateway = mlxsw_sp_fi_is_gateway(mlxsw_sp, fi); |
a7ff87ac | 3586 | nh_grp->count = fi->fib_nhs; |
7387dbbc | 3587 | fib_info_hold(fi); |
a7ff87ac JP |
3588 | for (i = 0; i < nh_grp->count; i++) { |
3589 | nh = &nh_grp->nexthops[i]; | |
3590 | fib_nh = &fi->fib_nh[i]; | |
0e6ea2a4 | 3591 | err = mlxsw_sp_nexthop4_init(mlxsw_sp, nh_grp, nh, fib_nh); |
a7ff87ac | 3592 | if (err) |
0e6ea2a4 | 3593 | goto err_nexthop4_init; |
a7ff87ac | 3594 | } |
e9ad5e7d IS |
3595 | err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); |
3596 | if (err) | |
3597 | goto err_nexthop_group_insert; | |
a7ff87ac JP |
3598 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
3599 | return nh_grp; | |
3600 | ||
e9ad5e7d | 3601 | err_nexthop_group_insert: |
0e6ea2a4 | 3602 | err_nexthop4_init: |
df6dd79b IS |
3603 | for (i--; i >= 0; i--) { |
3604 | nh = &nh_grp->nexthops[i]; | |
0e6ea2a4 | 3605 | mlxsw_sp_nexthop4_fini(mlxsw_sp, nh); |
df6dd79b | 3606 | } |
ba31d366 | 3607 | fib_info_put(fi); |
a7ff87ac JP |
3608 | kfree(nh_grp); |
3609 | return ERR_PTR(err); | |
3610 | } | |
3611 | ||
3612 | static void | |
0e6ea2a4 IS |
3613 | mlxsw_sp_nexthop4_group_destroy(struct mlxsw_sp *mlxsw_sp, |
3614 | struct mlxsw_sp_nexthop_group *nh_grp) | |
a7ff87ac JP |
3615 | { |
3616 | struct mlxsw_sp_nexthop *nh; | |
3617 | int i; | |
3618 | ||
e9ad5e7d | 3619 | mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); |
a7ff87ac JP |
3620 | for (i = 0; i < nh_grp->count; i++) { |
3621 | nh = &nh_grp->nexthops[i]; | |
0e6ea2a4 | 3622 | mlxsw_sp_nexthop4_fini(mlxsw_sp, nh); |
a7ff87ac | 3623 | } |
58312125 IS |
3624 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
3625 | WARN_ON_ONCE(nh_grp->adj_index_valid); | |
ba31d366 | 3626 | fib_info_put(mlxsw_sp_nexthop4_group_fi(nh_grp)); |
a7ff87ac JP |
3627 | kfree(nh_grp); |
3628 | } | |
3629 | ||
0e6ea2a4 IS |
3630 | static int mlxsw_sp_nexthop4_group_get(struct mlxsw_sp *mlxsw_sp, |
3631 | struct mlxsw_sp_fib_entry *fib_entry, | |
3632 | struct fib_info *fi) | |
a7ff87ac JP |
3633 | { |
3634 | struct mlxsw_sp_nexthop_group *nh_grp; | |
3635 | ||
ba31d366 | 3636 | nh_grp = mlxsw_sp_nexthop4_group_lookup(mlxsw_sp, fi); |
a7ff87ac | 3637 | if (!nh_grp) { |
0e6ea2a4 | 3638 | nh_grp = mlxsw_sp_nexthop4_group_create(mlxsw_sp, fi); |
a7ff87ac JP |
3639 | if (IS_ERR(nh_grp)) |
3640 | return PTR_ERR(nh_grp); | |
3641 | } | |
3642 | list_add_tail(&fib_entry->nexthop_group_node, &nh_grp->fib_list); | |
3643 | fib_entry->nh_group = nh_grp; | |
3644 | return 0; | |
3645 | } | |
3646 | ||
0e6ea2a4 IS |
3647 | static void mlxsw_sp_nexthop4_group_put(struct mlxsw_sp *mlxsw_sp, |
3648 | struct mlxsw_sp_fib_entry *fib_entry) | |
a7ff87ac JP |
3649 | { |
3650 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
3651 | ||
3652 | list_del(&fib_entry->nexthop_group_node); | |
3653 | if (!list_empty(&nh_grp->fib_list)) | |
3654 | return; | |
0e6ea2a4 | 3655 | mlxsw_sp_nexthop4_group_destroy(mlxsw_sp, nh_grp); |
a7ff87ac JP |
3656 | } |
3657 | ||
4f1c7f1f IS |
3658 | static bool |
3659 | mlxsw_sp_fib4_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) | |
3660 | { | |
3661 | struct mlxsw_sp_fib4_entry *fib4_entry; | |
3662 | ||
3663 | fib4_entry = container_of(fib_entry, struct mlxsw_sp_fib4_entry, | |
3664 | common); | |
3665 | return !fib4_entry->tos; | |
3666 | } | |
3667 | ||
013b20f9 IS |
3668 | static bool |
3669 | mlxsw_sp_fib_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) | |
3670 | { | |
3671 | struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group; | |
3672 | ||
4f1c7f1f IS |
3673 | switch (fib_entry->fib_node->fib->proto) { |
3674 | case MLXSW_SP_L3_PROTO_IPV4: | |
3675 | if (!mlxsw_sp_fib4_entry_should_offload(fib_entry)) | |
3676 | return false; | |
3677 | break; | |
3678 | case MLXSW_SP_L3_PROTO_IPV6: | |
3679 | break; | |
3680 | } | |
9aecce1c | 3681 | |
013b20f9 IS |
3682 | switch (fib_entry->type) { |
3683 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
3684 | return !!nh_group->adj_index_valid; | |
3685 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: | |
70ad3506 | 3686 | return !!nh_group->nh_rif; |
4607f6d2 PM |
3687 | case MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP: |
3688 | return true; | |
013b20f9 IS |
3689 | default: |
3690 | return false; | |
3691 | } | |
3692 | } | |
3693 | ||
428b851f IS |
3694 | static struct mlxsw_sp_nexthop * |
3695 | mlxsw_sp_rt6_nexthop(struct mlxsw_sp_nexthop_group *nh_grp, | |
3696 | const struct mlxsw_sp_rt6 *mlxsw_sp_rt6) | |
3697 | { | |
3698 | int i; | |
3699 | ||
3700 | for (i = 0; i < nh_grp->count; i++) { | |
3701 | struct mlxsw_sp_nexthop *nh = &nh_grp->nexthops[i]; | |
3702 | struct rt6_info *rt = mlxsw_sp_rt6->rt; | |
3703 | ||
3704 | if (nh->rif && nh->rif->dev == rt->dst.dev && | |
3705 | ipv6_addr_equal((const struct in6_addr *) &nh->gw_addr, | |
3706 | &rt->rt6i_gateway)) | |
3707 | return nh; | |
3708 | continue; | |
3709 | } | |
3710 | ||
3711 | return NULL; | |
3712 | } | |
3713 | ||
3984d1a8 IS |
3714 | static void |
3715 | mlxsw_sp_fib4_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) | |
3716 | { | |
3717 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
3718 | int i; | |
3719 | ||
4607f6d2 PM |
3720 | if (fib_entry->type == MLXSW_SP_FIB_ENTRY_TYPE_LOCAL || |
3721 | fib_entry->type == MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP) { | |
3984d1a8 IS |
3722 | nh_grp->nexthops->key.fib_nh->nh_flags |= RTNH_F_OFFLOAD; |
3723 | return; | |
3724 | } | |
3725 | ||
3726 | for (i = 0; i < nh_grp->count; i++) { | |
3727 | struct mlxsw_sp_nexthop *nh = &nh_grp->nexthops[i]; | |
3728 | ||
3729 | if (nh->offloaded) | |
3730 | nh->key.fib_nh->nh_flags |= RTNH_F_OFFLOAD; | |
3731 | else | |
3732 | nh->key.fib_nh->nh_flags &= ~RTNH_F_OFFLOAD; | |
3733 | } | |
3734 | } | |
3735 | ||
3736 | static void | |
3737 | mlxsw_sp_fib4_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
3738 | { | |
3739 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
3740 | int i; | |
3741 | ||
3742 | for (i = 0; i < nh_grp->count; i++) { | |
3743 | struct mlxsw_sp_nexthop *nh = &nh_grp->nexthops[i]; | |
3744 | ||
3745 | nh->key.fib_nh->nh_flags &= ~RTNH_F_OFFLOAD; | |
3746 | } | |
3747 | } | |
3748 | ||
428b851f IS |
3749 | static void |
3750 | mlxsw_sp_fib6_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) | |
3751 | { | |
3752 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
3753 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
3754 | ||
3755 | fib6_entry = container_of(fib_entry, struct mlxsw_sp_fib6_entry, | |
3756 | common); | |
3757 | ||
3758 | if (fib_entry->type == MLXSW_SP_FIB_ENTRY_TYPE_LOCAL) { | |
3759 | list_first_entry(&fib6_entry->rt6_list, struct mlxsw_sp_rt6, | |
fe400799 | 3760 | list)->rt->rt6i_nh_flags |= RTNH_F_OFFLOAD; |
428b851f IS |
3761 | return; |
3762 | } | |
3763 | ||
3764 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
3765 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
3766 | struct mlxsw_sp_nexthop *nh; | |
3767 | ||
3768 | nh = mlxsw_sp_rt6_nexthop(nh_grp, mlxsw_sp_rt6); | |
3769 | if (nh && nh->offloaded) | |
fe400799 | 3770 | mlxsw_sp_rt6->rt->rt6i_nh_flags |= RTNH_F_OFFLOAD; |
428b851f | 3771 | else |
fe400799 | 3772 | mlxsw_sp_rt6->rt->rt6i_nh_flags &= ~RTNH_F_OFFLOAD; |
428b851f IS |
3773 | } |
3774 | } | |
3775 | ||
3776 | static void | |
3777 | mlxsw_sp_fib6_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
3778 | { | |
3779 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
3780 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
3781 | ||
3782 | fib6_entry = container_of(fib_entry, struct mlxsw_sp_fib6_entry, | |
3783 | common); | |
3784 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
3785 | struct rt6_info *rt = mlxsw_sp_rt6->rt; | |
3786 | ||
fe400799 | 3787 | rt->rt6i_nh_flags &= ~RTNH_F_OFFLOAD; |
428b851f IS |
3788 | } |
3789 | } | |
3790 | ||
013b20f9 IS |
3791 | static void mlxsw_sp_fib_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) |
3792 | { | |
76610ebb | 3793 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 | 3794 | case MLXSW_SP_L3_PROTO_IPV4: |
3984d1a8 | 3795 | mlxsw_sp_fib4_entry_offload_set(fib_entry); |
013b20f9 IS |
3796 | break; |
3797 | case MLXSW_SP_L3_PROTO_IPV6: | |
428b851f IS |
3798 | mlxsw_sp_fib6_entry_offload_set(fib_entry); |
3799 | break; | |
013b20f9 IS |
3800 | } |
3801 | } | |
3802 | ||
3803 | static void | |
3804 | mlxsw_sp_fib_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
3805 | { | |
76610ebb | 3806 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 | 3807 | case MLXSW_SP_L3_PROTO_IPV4: |
3984d1a8 | 3808 | mlxsw_sp_fib4_entry_offload_unset(fib_entry); |
013b20f9 IS |
3809 | break; |
3810 | case MLXSW_SP_L3_PROTO_IPV6: | |
428b851f IS |
3811 | mlxsw_sp_fib6_entry_offload_unset(fib_entry); |
3812 | break; | |
013b20f9 | 3813 | } |
013b20f9 IS |
3814 | } |
3815 | ||
3816 | static void | |
3817 | mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry, | |
3818 | enum mlxsw_reg_ralue_op op, int err) | |
3819 | { | |
3820 | switch (op) { | |
3821 | case MLXSW_REG_RALUE_OP_WRITE_DELETE: | |
013b20f9 IS |
3822 | return mlxsw_sp_fib_entry_offload_unset(fib_entry); |
3823 | case MLXSW_REG_RALUE_OP_WRITE_WRITE: | |
3824 | if (err) | |
3825 | return; | |
1353ee70 | 3826 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) |
013b20f9 | 3827 | mlxsw_sp_fib_entry_offload_set(fib_entry); |
85f44a15 | 3828 | else |
013b20f9 IS |
3829 | mlxsw_sp_fib_entry_offload_unset(fib_entry); |
3830 | return; | |
3831 | default: | |
3832 | return; | |
3833 | } | |
3834 | } | |
3835 | ||
9dbf4d76 IS |
3836 | static void |
3837 | mlxsw_sp_fib_entry_ralue_pack(char *ralue_pl, | |
3838 | const struct mlxsw_sp_fib_entry *fib_entry, | |
3839 | enum mlxsw_reg_ralue_op op) | |
a7ff87ac | 3840 | { |
76610ebb | 3841 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
9dbf4d76 IS |
3842 | enum mlxsw_reg_ralxx_protocol proto; |
3843 | u32 *p_dip; | |
3844 | ||
3845 | proto = (enum mlxsw_reg_ralxx_protocol) fib->proto; | |
3846 | ||
3847 | switch (fib->proto) { | |
3848 | case MLXSW_SP_L3_PROTO_IPV4: | |
3849 | p_dip = (u32 *) fib_entry->fib_node->key.addr; | |
3850 | mlxsw_reg_ralue_pack4(ralue_pl, proto, op, fib->vr->id, | |
3851 | fib_entry->fib_node->key.prefix_len, | |
3852 | *p_dip); | |
3853 | break; | |
3854 | case MLXSW_SP_L3_PROTO_IPV6: | |
3855 | mlxsw_reg_ralue_pack6(ralue_pl, proto, op, fib->vr->id, | |
3856 | fib_entry->fib_node->key.prefix_len, | |
3857 | fib_entry->fib_node->key.addr); | |
3858 | break; | |
3859 | } | |
3860 | } | |
3861 | ||
3862 | static int mlxsw_sp_fib_entry_op_remote(struct mlxsw_sp *mlxsw_sp, | |
3863 | struct mlxsw_sp_fib_entry *fib_entry, | |
3864 | enum mlxsw_reg_ralue_op op) | |
3865 | { | |
3866 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
a7ff87ac JP |
3867 | enum mlxsw_reg_ralue_trap_action trap_action; |
3868 | u16 trap_id = 0; | |
3869 | u32 adjacency_index = 0; | |
3870 | u16 ecmp_size = 0; | |
3871 | ||
3872 | /* In case the nexthop group adjacency index is valid, use it | |
3873 | * with provided ECMP size. Otherwise, setup trap and pass | |
3874 | * traffic to kernel. | |
3875 | */ | |
4b411477 | 3876 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { |
a7ff87ac JP |
3877 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; |
3878 | adjacency_index = fib_entry->nh_group->adj_index; | |
3879 | ecmp_size = fib_entry->nh_group->ecmp_size; | |
3880 | } else { | |
3881 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
3882 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
3883 | } | |
3884 | ||
9dbf4d76 | 3885 | mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); |
a7ff87ac JP |
3886 | mlxsw_reg_ralue_act_remote_pack(ralue_pl, trap_action, trap_id, |
3887 | adjacency_index, ecmp_size); | |
3888 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
3889 | } | |
3890 | ||
9dbf4d76 IS |
3891 | static int mlxsw_sp_fib_entry_op_local(struct mlxsw_sp *mlxsw_sp, |
3892 | struct mlxsw_sp_fib_entry *fib_entry, | |
3893 | enum mlxsw_reg_ralue_op op) | |
61c503f9 | 3894 | { |
bf95233e | 3895 | struct mlxsw_sp_rif *rif = fib_entry->nh_group->nh_rif; |
70ad3506 | 3896 | enum mlxsw_reg_ralue_trap_action trap_action; |
61c503f9 | 3897 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
70ad3506 | 3898 | u16 trap_id = 0; |
bf95233e | 3899 | u16 rif_index = 0; |
70ad3506 IS |
3900 | |
3901 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { | |
3902 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; | |
bf95233e | 3903 | rif_index = rif->rif_index; |
70ad3506 IS |
3904 | } else { |
3905 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
3906 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
3907 | } | |
61c503f9 | 3908 | |
9dbf4d76 | 3909 | mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); |
bf95233e AS |
3910 | mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id, |
3911 | rif_index); | |
61c503f9 JP |
3912 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); |
3913 | } | |
3914 | ||
9dbf4d76 IS |
3915 | static int mlxsw_sp_fib_entry_op_trap(struct mlxsw_sp *mlxsw_sp, |
3916 | struct mlxsw_sp_fib_entry *fib_entry, | |
3917 | enum mlxsw_reg_ralue_op op) | |
61c503f9 JP |
3918 | { |
3919 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
61c503f9 | 3920 | |
9dbf4d76 | 3921 | mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); |
61c503f9 JP |
3922 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); |
3923 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
3924 | } | |
3925 | ||
4607f6d2 PM |
3926 | static int |
3927 | mlxsw_sp_fib_entry_op_ipip_decap(struct mlxsw_sp *mlxsw_sp, | |
3928 | struct mlxsw_sp_fib_entry *fib_entry, | |
3929 | enum mlxsw_reg_ralue_op op) | |
3930 | { | |
3931 | struct mlxsw_sp_ipip_entry *ipip_entry = fib_entry->decap.ipip_entry; | |
3932 | const struct mlxsw_sp_ipip_ops *ipip_ops; | |
3933 | ||
3934 | if (WARN_ON(!ipip_entry)) | |
3935 | return -EINVAL; | |
3936 | ||
3937 | ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt]; | |
3938 | return ipip_ops->fib_entry_op(mlxsw_sp, ipip_entry, op, | |
3939 | fib_entry->decap.tunnel_index); | |
3940 | } | |
3941 | ||
9dbf4d76 IS |
3942 | static int __mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, |
3943 | struct mlxsw_sp_fib_entry *fib_entry, | |
3944 | enum mlxsw_reg_ralue_op op) | |
61c503f9 JP |
3945 | { |
3946 | switch (fib_entry->type) { | |
3947 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
9dbf4d76 | 3948 | return mlxsw_sp_fib_entry_op_remote(mlxsw_sp, fib_entry, op); |
61c503f9 | 3949 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: |
9dbf4d76 | 3950 | return mlxsw_sp_fib_entry_op_local(mlxsw_sp, fib_entry, op); |
61c503f9 | 3951 | case MLXSW_SP_FIB_ENTRY_TYPE_TRAP: |
9dbf4d76 | 3952 | return mlxsw_sp_fib_entry_op_trap(mlxsw_sp, fib_entry, op); |
4607f6d2 PM |
3953 | case MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP: |
3954 | return mlxsw_sp_fib_entry_op_ipip_decap(mlxsw_sp, | |
3955 | fib_entry, op); | |
61c503f9 JP |
3956 | } |
3957 | return -EINVAL; | |
3958 | } | |
3959 | ||
3960 | static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, | |
3961 | struct mlxsw_sp_fib_entry *fib_entry, | |
3962 | enum mlxsw_reg_ralue_op op) | |
3963 | { | |
9dbf4d76 | 3964 | int err = __mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, op); |
013b20f9 | 3965 | |
013b20f9 | 3966 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, err); |
9dbf4d76 | 3967 | |
013b20f9 | 3968 | return err; |
61c503f9 JP |
3969 | } |
3970 | ||
3971 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
3972 | struct mlxsw_sp_fib_entry *fib_entry) | |
3973 | { | |
7146da31 JP |
3974 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, |
3975 | MLXSW_REG_RALUE_OP_WRITE_WRITE); | |
61c503f9 JP |
3976 | } |
3977 | ||
3978 | static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp, | |
3979 | struct mlxsw_sp_fib_entry *fib_entry) | |
3980 | { | |
3981 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, | |
3982 | MLXSW_REG_RALUE_OP_WRITE_DELETE); | |
3983 | } | |
3984 | ||
61c503f9 | 3985 | static int |
013b20f9 IS |
3986 | mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp, |
3987 | const struct fib_entry_notifier_info *fen_info, | |
3988 | struct mlxsw_sp_fib_entry *fib_entry) | |
61c503f9 | 3989 | { |
4607f6d2 PM |
3990 | union mlxsw_sp_l3addr dip = { .addr4 = htonl(fen_info->dst) }; |
3991 | struct net_device *dev = fen_info->fi->fib_dev; | |
3992 | struct mlxsw_sp_ipip_entry *ipip_entry; | |
b45f64d1 | 3993 | struct fib_info *fi = fen_info->fi; |
61c503f9 | 3994 | |
97989ee0 | 3995 | switch (fen_info->type) { |
97989ee0 | 3996 | case RTN_LOCAL: |
4607f6d2 PM |
3997 | ipip_entry = mlxsw_sp_ipip_entry_find_by_decap(mlxsw_sp, dev, |
3998 | MLXSW_SP_L3_PROTO_IPV4, dip); | |
57c77ce4 | 3999 | if (ipip_entry && ipip_entry->ol_dev->flags & IFF_UP) { |
4607f6d2 PM |
4000 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP; |
4001 | return mlxsw_sp_fib_entry_decap_init(mlxsw_sp, | |
4002 | fib_entry, | |
4003 | ipip_entry); | |
4004 | } | |
4005 | /* fall through */ | |
4006 | case RTN_BROADCAST: | |
61c503f9 JP |
4007 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; |
4008 | return 0; | |
97989ee0 IS |
4009 | case RTN_UNREACHABLE: /* fall through */ |
4010 | case RTN_BLACKHOLE: /* fall through */ | |
4011 | case RTN_PROHIBIT: | |
4012 | /* Packets hitting these routes need to be trapped, but | |
4013 | * can do so with a lower priority than packets directed | |
4014 | * at the host, so use action type local instead of trap. | |
4015 | */ | |
61c503f9 | 4016 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; |
97989ee0 IS |
4017 | return 0; |
4018 | case RTN_UNICAST: | |
9b01451a | 4019 | if (mlxsw_sp_fi_is_gateway(mlxsw_sp, fi)) |
97989ee0 | 4020 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; |
9b01451a PM |
4021 | else |
4022 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
97989ee0 IS |
4023 | return 0; |
4024 | default: | |
4025 | return -EINVAL; | |
4026 | } | |
a7ff87ac JP |
4027 | } |
4028 | ||
4f1c7f1f | 4029 | static struct mlxsw_sp_fib4_entry * |
9aecce1c IS |
4030 | mlxsw_sp_fib4_entry_create(struct mlxsw_sp *mlxsw_sp, |
4031 | struct mlxsw_sp_fib_node *fib_node, | |
4032 | const struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 4033 | { |
4f1c7f1f | 4034 | struct mlxsw_sp_fib4_entry *fib4_entry; |
61c503f9 | 4035 | struct mlxsw_sp_fib_entry *fib_entry; |
61c503f9 JP |
4036 | int err; |
4037 | ||
4f1c7f1f IS |
4038 | fib4_entry = kzalloc(sizeof(*fib4_entry), GFP_KERNEL); |
4039 | if (!fib4_entry) | |
4040 | return ERR_PTR(-ENOMEM); | |
4041 | fib_entry = &fib4_entry->common; | |
61c503f9 | 4042 | |
013b20f9 | 4043 | err = mlxsw_sp_fib4_entry_type_set(mlxsw_sp, fen_info, fib_entry); |
61c503f9 | 4044 | if (err) |
013b20f9 | 4045 | goto err_fib4_entry_type_set; |
61c503f9 | 4046 | |
0e6ea2a4 | 4047 | err = mlxsw_sp_nexthop4_group_get(mlxsw_sp, fib_entry, fen_info->fi); |
b8399a1e | 4048 | if (err) |
0e6ea2a4 | 4049 | goto err_nexthop4_group_get; |
b8399a1e | 4050 | |
4f1c7f1f IS |
4051 | fib4_entry->prio = fen_info->fi->fib_priority; |
4052 | fib4_entry->tb_id = fen_info->tb_id; | |
4053 | fib4_entry->type = fen_info->type; | |
4054 | fib4_entry->tos = fen_info->tos; | |
9aecce1c IS |
4055 | |
4056 | fib_entry->fib_node = fib_node; | |
4057 | ||
4f1c7f1f | 4058 | return fib4_entry; |
5b004412 | 4059 | |
0e6ea2a4 | 4060 | err_nexthop4_group_get: |
013b20f9 | 4061 | err_fib4_entry_type_set: |
4f1c7f1f | 4062 | kfree(fib4_entry); |
5b004412 JP |
4063 | return ERR_PTR(err); |
4064 | } | |
4065 | ||
9aecce1c | 4066 | static void mlxsw_sp_fib4_entry_destroy(struct mlxsw_sp *mlxsw_sp, |
4f1c7f1f | 4067 | struct mlxsw_sp_fib4_entry *fib4_entry) |
9aecce1c | 4068 | { |
0e6ea2a4 | 4069 | mlxsw_sp_nexthop4_group_put(mlxsw_sp, &fib4_entry->common); |
4f1c7f1f | 4070 | kfree(fib4_entry); |
9aecce1c IS |
4071 | } |
4072 | ||
4f1c7f1f | 4073 | static struct mlxsw_sp_fib4_entry * |
9aecce1c IS |
4074 | mlxsw_sp_fib4_entry_lookup(struct mlxsw_sp *mlxsw_sp, |
4075 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 4076 | { |
4f1c7f1f | 4077 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 4078 | struct mlxsw_sp_fib_node *fib_node; |
160e22aa IS |
4079 | struct mlxsw_sp_fib *fib; |
4080 | struct mlxsw_sp_vr *vr; | |
4081 | ||
4082 | vr = mlxsw_sp_vr_find(mlxsw_sp, fen_info->tb_id); | |
4083 | if (!vr) | |
4084 | return NULL; | |
4085 | fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV4); | |
5b004412 | 4086 | |
160e22aa IS |
4087 | fib_node = mlxsw_sp_fib_node_lookup(fib, &fen_info->dst, |
4088 | sizeof(fen_info->dst), | |
4089 | fen_info->dst_len); | |
4090 | if (!fib_node) | |
9aecce1c IS |
4091 | return NULL; |
4092 | ||
4f1c7f1f IS |
4093 | list_for_each_entry(fib4_entry, &fib_node->entry_list, common.list) { |
4094 | if (fib4_entry->tb_id == fen_info->tb_id && | |
4095 | fib4_entry->tos == fen_info->tos && | |
4096 | fib4_entry->type == fen_info->type && | |
ba31d366 AS |
4097 | mlxsw_sp_nexthop4_group_fi(fib4_entry->common.nh_group) == |
4098 | fen_info->fi) { | |
4f1c7f1f | 4099 | return fib4_entry; |
9aecce1c IS |
4100 | } |
4101 | } | |
4102 | ||
4103 | return NULL; | |
4104 | } | |
4105 | ||
4106 | static const struct rhashtable_params mlxsw_sp_fib_ht_params = { | |
4107 | .key_offset = offsetof(struct mlxsw_sp_fib_node, key), | |
4108 | .head_offset = offsetof(struct mlxsw_sp_fib_node, ht_node), | |
4109 | .key_len = sizeof(struct mlxsw_sp_fib_key), | |
4110 | .automatic_shrinking = true, | |
4111 | }; | |
4112 | ||
4113 | static int mlxsw_sp_fib_node_insert(struct mlxsw_sp_fib *fib, | |
4114 | struct mlxsw_sp_fib_node *fib_node) | |
4115 | { | |
4116 | return rhashtable_insert_fast(&fib->ht, &fib_node->ht_node, | |
4117 | mlxsw_sp_fib_ht_params); | |
4118 | } | |
4119 | ||
4120 | static void mlxsw_sp_fib_node_remove(struct mlxsw_sp_fib *fib, | |
4121 | struct mlxsw_sp_fib_node *fib_node) | |
4122 | { | |
4123 | rhashtable_remove_fast(&fib->ht, &fib_node->ht_node, | |
4124 | mlxsw_sp_fib_ht_params); | |
4125 | } | |
4126 | ||
4127 | static struct mlxsw_sp_fib_node * | |
4128 | mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr, | |
4129 | size_t addr_len, unsigned char prefix_len) | |
4130 | { | |
4131 | struct mlxsw_sp_fib_key key; | |
4132 | ||
4133 | memset(&key, 0, sizeof(key)); | |
4134 | memcpy(key.addr, addr, addr_len); | |
4135 | key.prefix_len = prefix_len; | |
4136 | return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params); | |
4137 | } | |
4138 | ||
4139 | static struct mlxsw_sp_fib_node * | |
76610ebb | 4140 | mlxsw_sp_fib_node_create(struct mlxsw_sp_fib *fib, const void *addr, |
9aecce1c IS |
4141 | size_t addr_len, unsigned char prefix_len) |
4142 | { | |
4143 | struct mlxsw_sp_fib_node *fib_node; | |
4144 | ||
4145 | fib_node = kzalloc(sizeof(*fib_node), GFP_KERNEL); | |
4146 | if (!fib_node) | |
5b004412 JP |
4147 | return NULL; |
4148 | ||
9aecce1c | 4149 | INIT_LIST_HEAD(&fib_node->entry_list); |
76610ebb | 4150 | list_add(&fib_node->list, &fib->node_list); |
9aecce1c IS |
4151 | memcpy(fib_node->key.addr, addr, addr_len); |
4152 | fib_node->key.prefix_len = prefix_len; | |
9aecce1c IS |
4153 | |
4154 | return fib_node; | |
4155 | } | |
4156 | ||
4157 | static void mlxsw_sp_fib_node_destroy(struct mlxsw_sp_fib_node *fib_node) | |
4158 | { | |
9aecce1c IS |
4159 | list_del(&fib_node->list); |
4160 | WARN_ON(!list_empty(&fib_node->entry_list)); | |
4161 | kfree(fib_node); | |
4162 | } | |
4163 | ||
4164 | static bool | |
4165 | mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node, | |
4166 | const struct mlxsw_sp_fib_entry *fib_entry) | |
4167 | { | |
4168 | return list_first_entry(&fib_node->entry_list, | |
4169 | struct mlxsw_sp_fib_entry, list) == fib_entry; | |
4170 | } | |
4171 | ||
fc922bb0 IS |
4172 | static int mlxsw_sp_fib_lpm_tree_link(struct mlxsw_sp *mlxsw_sp, |
4173 | struct mlxsw_sp_fib *fib, | |
4174 | struct mlxsw_sp_fib_node *fib_node) | |
4175 | { | |
4176 | struct mlxsw_sp_prefix_usage req_prefix_usage = {{ 0 } }; | |
4177 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
4178 | int err; | |
4179 | ||
4180 | /* Since the tree is shared between all virtual routers we must | |
4181 | * make sure it contains all the required prefix lengths. This | |
4182 | * can be computed by either adding the new prefix length to the | |
4183 | * existing prefix usage of a bound tree, or by aggregating the | |
4184 | * prefix lengths across all virtual routers and adding the new | |
4185 | * one as well. | |
4186 | */ | |
4187 | if (fib->lpm_tree) | |
4188 | mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, | |
4189 | &fib->lpm_tree->prefix_usage); | |
4190 | else | |
4191 | mlxsw_sp_vrs_prefixes(mlxsw_sp, fib->proto, &req_prefix_usage); | |
4192 | mlxsw_sp_prefix_usage_set(&req_prefix_usage, fib_node->key.prefix_len); | |
4193 | ||
4194 | lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, | |
4195 | fib->proto); | |
4196 | if (IS_ERR(lpm_tree)) | |
4197 | return PTR_ERR(lpm_tree); | |
4198 | ||
4199 | if (fib->lpm_tree && fib->lpm_tree->id == lpm_tree->id) | |
4200 | return 0; | |
4201 | ||
4202 | err = mlxsw_sp_vrs_lpm_tree_replace(mlxsw_sp, fib, lpm_tree); | |
4203 | if (err) | |
4204 | return err; | |
4205 | ||
4206 | return 0; | |
4207 | } | |
4208 | ||
4209 | static void mlxsw_sp_fib_lpm_tree_unlink(struct mlxsw_sp *mlxsw_sp, | |
4210 | struct mlxsw_sp_fib *fib) | |
4211 | { | |
fc922bb0 IS |
4212 | if (!mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) |
4213 | return; | |
4214 | mlxsw_sp_vr_lpm_tree_unbind(mlxsw_sp, fib); | |
4215 | mlxsw_sp_lpm_tree_put(mlxsw_sp, fib->lpm_tree); | |
4216 | fib->lpm_tree = NULL; | |
4217 | } | |
4218 | ||
9aecce1c IS |
4219 | static void mlxsw_sp_fib_node_prefix_inc(struct mlxsw_sp_fib_node *fib_node) |
4220 | { | |
4221 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 4222 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
4223 | |
4224 | if (fib->prefix_ref_count[prefix_len]++ == 0) | |
4225 | mlxsw_sp_prefix_usage_set(&fib->prefix_usage, prefix_len); | |
4226 | } | |
4227 | ||
4228 | static void mlxsw_sp_fib_node_prefix_dec(struct mlxsw_sp_fib_node *fib_node) | |
4229 | { | |
4230 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 4231 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
4232 | |
4233 | if (--fib->prefix_ref_count[prefix_len] == 0) | |
4234 | mlxsw_sp_prefix_usage_clear(&fib->prefix_usage, prefix_len); | |
5b004412 JP |
4235 | } |
4236 | ||
76610ebb IS |
4237 | static int mlxsw_sp_fib_node_init(struct mlxsw_sp *mlxsw_sp, |
4238 | struct mlxsw_sp_fib_node *fib_node, | |
4239 | struct mlxsw_sp_fib *fib) | |
4240 | { | |
76610ebb IS |
4241 | int err; |
4242 | ||
4243 | err = mlxsw_sp_fib_node_insert(fib, fib_node); | |
4244 | if (err) | |
4245 | return err; | |
4246 | fib_node->fib = fib; | |
4247 | ||
fc922bb0 IS |
4248 | err = mlxsw_sp_fib_lpm_tree_link(mlxsw_sp, fib, fib_node); |
4249 | if (err) | |
4250 | goto err_fib_lpm_tree_link; | |
76610ebb IS |
4251 | |
4252 | mlxsw_sp_fib_node_prefix_inc(fib_node); | |
4253 | ||
4254 | return 0; | |
4255 | ||
fc922bb0 | 4256 | err_fib_lpm_tree_link: |
76610ebb IS |
4257 | fib_node->fib = NULL; |
4258 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
4259 | return err; | |
4260 | } | |
4261 | ||
4262 | static void mlxsw_sp_fib_node_fini(struct mlxsw_sp *mlxsw_sp, | |
4263 | struct mlxsw_sp_fib_node *fib_node) | |
4264 | { | |
76610ebb IS |
4265 | struct mlxsw_sp_fib *fib = fib_node->fib; |
4266 | ||
4267 | mlxsw_sp_fib_node_prefix_dec(fib_node); | |
fc922bb0 | 4268 | mlxsw_sp_fib_lpm_tree_unlink(mlxsw_sp, fib); |
76610ebb IS |
4269 | fib_node->fib = NULL; |
4270 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
4271 | } | |
4272 | ||
9aecce1c | 4273 | static struct mlxsw_sp_fib_node * |
731ea1ca IS |
4274 | mlxsw_sp_fib_node_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id, const void *addr, |
4275 | size_t addr_len, unsigned char prefix_len, | |
4276 | enum mlxsw_sp_l3proto proto) | |
5b004412 | 4277 | { |
9aecce1c | 4278 | struct mlxsw_sp_fib_node *fib_node; |
76610ebb | 4279 | struct mlxsw_sp_fib *fib; |
9aecce1c IS |
4280 | struct mlxsw_sp_vr *vr; |
4281 | int err; | |
4282 | ||
f8fa9b4e | 4283 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id, NULL); |
9aecce1c IS |
4284 | if (IS_ERR(vr)) |
4285 | return ERR_CAST(vr); | |
731ea1ca | 4286 | fib = mlxsw_sp_vr_fib(vr, proto); |
9aecce1c | 4287 | |
731ea1ca | 4288 | fib_node = mlxsw_sp_fib_node_lookup(fib, addr, addr_len, prefix_len); |
9aecce1c IS |
4289 | if (fib_node) |
4290 | return fib_node; | |
5b004412 | 4291 | |
731ea1ca | 4292 | fib_node = mlxsw_sp_fib_node_create(fib, addr, addr_len, prefix_len); |
9aecce1c IS |
4293 | if (!fib_node) { |
4294 | err = -ENOMEM; | |
4295 | goto err_fib_node_create; | |
5b004412 | 4296 | } |
9aecce1c | 4297 | |
76610ebb IS |
4298 | err = mlxsw_sp_fib_node_init(mlxsw_sp, fib_node, fib); |
4299 | if (err) | |
4300 | goto err_fib_node_init; | |
4301 | ||
9aecce1c IS |
4302 | return fib_node; |
4303 | ||
76610ebb IS |
4304 | err_fib_node_init: |
4305 | mlxsw_sp_fib_node_destroy(fib_node); | |
9aecce1c | 4306 | err_fib_node_create: |
76610ebb | 4307 | mlxsw_sp_vr_put(vr); |
9aecce1c | 4308 | return ERR_PTR(err); |
5b004412 JP |
4309 | } |
4310 | ||
731ea1ca IS |
4311 | static void mlxsw_sp_fib_node_put(struct mlxsw_sp *mlxsw_sp, |
4312 | struct mlxsw_sp_fib_node *fib_node) | |
5b004412 | 4313 | { |
76610ebb | 4314 | struct mlxsw_sp_vr *vr = fib_node->fib->vr; |
5b004412 | 4315 | |
9aecce1c IS |
4316 | if (!list_empty(&fib_node->entry_list)) |
4317 | return; | |
76610ebb | 4318 | mlxsw_sp_fib_node_fini(mlxsw_sp, fib_node); |
9aecce1c | 4319 | mlxsw_sp_fib_node_destroy(fib_node); |
76610ebb | 4320 | mlxsw_sp_vr_put(vr); |
61c503f9 JP |
4321 | } |
4322 | ||
4f1c7f1f | 4323 | static struct mlxsw_sp_fib4_entry * |
9aecce1c | 4324 | mlxsw_sp_fib4_node_entry_find(const struct mlxsw_sp_fib_node *fib_node, |
4f1c7f1f | 4325 | const struct mlxsw_sp_fib4_entry *new4_entry) |
61c503f9 | 4326 | { |
4f1c7f1f | 4327 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 4328 | |
4f1c7f1f IS |
4329 | list_for_each_entry(fib4_entry, &fib_node->entry_list, common.list) { |
4330 | if (fib4_entry->tb_id > new4_entry->tb_id) | |
9aecce1c | 4331 | continue; |
4f1c7f1f | 4332 | if (fib4_entry->tb_id != new4_entry->tb_id) |
9aecce1c | 4333 | break; |
4f1c7f1f | 4334 | if (fib4_entry->tos > new4_entry->tos) |
9aecce1c | 4335 | continue; |
4f1c7f1f IS |
4336 | if (fib4_entry->prio >= new4_entry->prio || |
4337 | fib4_entry->tos < new4_entry->tos) | |
4338 | return fib4_entry; | |
9aecce1c IS |
4339 | } |
4340 | ||
4341 | return NULL; | |
4342 | } | |
4343 | ||
4f1c7f1f IS |
4344 | static int |
4345 | mlxsw_sp_fib4_node_list_append(struct mlxsw_sp_fib4_entry *fib4_entry, | |
4346 | struct mlxsw_sp_fib4_entry *new4_entry) | |
4283bce5 IS |
4347 | { |
4348 | struct mlxsw_sp_fib_node *fib_node; | |
4349 | ||
4f1c7f1f | 4350 | if (WARN_ON(!fib4_entry)) |
4283bce5 IS |
4351 | return -EINVAL; |
4352 | ||
4f1c7f1f IS |
4353 | fib_node = fib4_entry->common.fib_node; |
4354 | list_for_each_entry_from(fib4_entry, &fib_node->entry_list, | |
4355 | common.list) { | |
4356 | if (fib4_entry->tb_id != new4_entry->tb_id || | |
4357 | fib4_entry->tos != new4_entry->tos || | |
4358 | fib4_entry->prio != new4_entry->prio) | |
4283bce5 IS |
4359 | break; |
4360 | } | |
4361 | ||
4f1c7f1f | 4362 | list_add_tail(&new4_entry->common.list, &fib4_entry->common.list); |
4283bce5 IS |
4363 | return 0; |
4364 | } | |
4365 | ||
9aecce1c | 4366 | static int |
9efbee6f | 4367 | mlxsw_sp_fib4_node_list_insert(struct mlxsw_sp_fib4_entry *new4_entry, |
599cf8f9 | 4368 | bool replace, bool append) |
9aecce1c | 4369 | { |
9efbee6f | 4370 | struct mlxsw_sp_fib_node *fib_node = new4_entry->common.fib_node; |
4f1c7f1f | 4371 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 4372 | |
4f1c7f1f | 4373 | fib4_entry = mlxsw_sp_fib4_node_entry_find(fib_node, new4_entry); |
9aecce1c | 4374 | |
4283bce5 | 4375 | if (append) |
4f1c7f1f IS |
4376 | return mlxsw_sp_fib4_node_list_append(fib4_entry, new4_entry); |
4377 | if (replace && WARN_ON(!fib4_entry)) | |
599cf8f9 | 4378 | return -EINVAL; |
4283bce5 | 4379 | |
599cf8f9 IS |
4380 | /* Insert new entry before replaced one, so that we can later |
4381 | * remove the second. | |
4382 | */ | |
4f1c7f1f IS |
4383 | if (fib4_entry) { |
4384 | list_add_tail(&new4_entry->common.list, | |
4385 | &fib4_entry->common.list); | |
9aecce1c | 4386 | } else { |
4f1c7f1f | 4387 | struct mlxsw_sp_fib4_entry *last; |
9aecce1c | 4388 | |
4f1c7f1f IS |
4389 | list_for_each_entry(last, &fib_node->entry_list, common.list) { |
4390 | if (new4_entry->tb_id > last->tb_id) | |
9aecce1c | 4391 | break; |
4f1c7f1f | 4392 | fib4_entry = last; |
9aecce1c IS |
4393 | } |
4394 | ||
4f1c7f1f IS |
4395 | if (fib4_entry) |
4396 | list_add(&new4_entry->common.list, | |
4397 | &fib4_entry->common.list); | |
9aecce1c | 4398 | else |
4f1c7f1f IS |
4399 | list_add(&new4_entry->common.list, |
4400 | &fib_node->entry_list); | |
9aecce1c IS |
4401 | } |
4402 | ||
4403 | return 0; | |
4404 | } | |
4405 | ||
4406 | static void | |
4f1c7f1f | 4407 | mlxsw_sp_fib4_node_list_remove(struct mlxsw_sp_fib4_entry *fib4_entry) |
9aecce1c | 4408 | { |
4f1c7f1f | 4409 | list_del(&fib4_entry->common.list); |
9aecce1c IS |
4410 | } |
4411 | ||
80c238f9 IS |
4412 | static int mlxsw_sp_fib_node_entry_add(struct mlxsw_sp *mlxsw_sp, |
4413 | struct mlxsw_sp_fib_entry *fib_entry) | |
9aecce1c | 4414 | { |
9efbee6f IS |
4415 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; |
4416 | ||
9aecce1c IS |
4417 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) |
4418 | return 0; | |
4419 | ||
4420 | /* To prevent packet loss, overwrite the previously offloaded | |
4421 | * entry. | |
4422 | */ | |
4423 | if (!list_is_singular(&fib_node->entry_list)) { | |
4424 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
4425 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
4426 | ||
4427 | mlxsw_sp_fib_entry_offload_refresh(n, op, 0); | |
4428 | } | |
4429 | ||
4430 | return mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
4431 | } | |
4432 | ||
80c238f9 IS |
4433 | static void mlxsw_sp_fib_node_entry_del(struct mlxsw_sp *mlxsw_sp, |
4434 | struct mlxsw_sp_fib_entry *fib_entry) | |
9aecce1c | 4435 | { |
9efbee6f IS |
4436 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; |
4437 | ||
9aecce1c IS |
4438 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) |
4439 | return; | |
4440 | ||
4441 | /* Promote the next entry by overwriting the deleted entry */ | |
4442 | if (!list_is_singular(&fib_node->entry_list)) { | |
4443 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
4444 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
4445 | ||
4446 | mlxsw_sp_fib_entry_update(mlxsw_sp, n); | |
4447 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0); | |
4448 | return; | |
4449 | } | |
4450 | ||
4451 | mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry); | |
4452 | } | |
4453 | ||
4454 | static int mlxsw_sp_fib4_node_entry_link(struct mlxsw_sp *mlxsw_sp, | |
4f1c7f1f | 4455 | struct mlxsw_sp_fib4_entry *fib4_entry, |
599cf8f9 | 4456 | bool replace, bool append) |
9aecce1c | 4457 | { |
9aecce1c IS |
4458 | int err; |
4459 | ||
9efbee6f | 4460 | err = mlxsw_sp_fib4_node_list_insert(fib4_entry, replace, append); |
9aecce1c IS |
4461 | if (err) |
4462 | return err; | |
4463 | ||
80c238f9 | 4464 | err = mlxsw_sp_fib_node_entry_add(mlxsw_sp, &fib4_entry->common); |
9aecce1c | 4465 | if (err) |
80c238f9 | 4466 | goto err_fib_node_entry_add; |
9aecce1c | 4467 | |
9aecce1c IS |
4468 | return 0; |
4469 | ||
80c238f9 | 4470 | err_fib_node_entry_add: |
4f1c7f1f | 4471 | mlxsw_sp_fib4_node_list_remove(fib4_entry); |
9aecce1c IS |
4472 | return err; |
4473 | } | |
4474 | ||
4475 | static void | |
4476 | mlxsw_sp_fib4_node_entry_unlink(struct mlxsw_sp *mlxsw_sp, | |
4f1c7f1f | 4477 | struct mlxsw_sp_fib4_entry *fib4_entry) |
9aecce1c | 4478 | { |
80c238f9 | 4479 | mlxsw_sp_fib_node_entry_del(mlxsw_sp, &fib4_entry->common); |
4f1c7f1f | 4480 | mlxsw_sp_fib4_node_list_remove(fib4_entry); |
4607f6d2 PM |
4481 | |
4482 | if (fib4_entry->common.type == MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP) | |
4483 | mlxsw_sp_fib_entry_decap_fini(mlxsw_sp, &fib4_entry->common); | |
9aecce1c IS |
4484 | } |
4485 | ||
599cf8f9 | 4486 | static void mlxsw_sp_fib4_entry_replace(struct mlxsw_sp *mlxsw_sp, |
4f1c7f1f | 4487 | struct mlxsw_sp_fib4_entry *fib4_entry, |
599cf8f9 IS |
4488 | bool replace) |
4489 | { | |
4f1c7f1f IS |
4490 | struct mlxsw_sp_fib_node *fib_node = fib4_entry->common.fib_node; |
4491 | struct mlxsw_sp_fib4_entry *replaced; | |
599cf8f9 IS |
4492 | |
4493 | if (!replace) | |
4494 | return; | |
4495 | ||
4496 | /* We inserted the new entry before replaced one */ | |
4f1c7f1f | 4497 | replaced = list_next_entry(fib4_entry, common.list); |
599cf8f9 IS |
4498 | |
4499 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, replaced); | |
4500 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, replaced); | |
731ea1ca | 4501 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); |
599cf8f9 IS |
4502 | } |
4503 | ||
9aecce1c IS |
4504 | static int |
4505 | mlxsw_sp_router_fib4_add(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 4506 | const struct fib_entry_notifier_info *fen_info, |
599cf8f9 | 4507 | bool replace, bool append) |
9aecce1c | 4508 | { |
4f1c7f1f | 4509 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 4510 | struct mlxsw_sp_fib_node *fib_node; |
61c503f9 JP |
4511 | int err; |
4512 | ||
9011b677 | 4513 | if (mlxsw_sp->router->aborted) |
b45f64d1 JP |
4514 | return 0; |
4515 | ||
731ea1ca IS |
4516 | fib_node = mlxsw_sp_fib_node_get(mlxsw_sp, fen_info->tb_id, |
4517 | &fen_info->dst, sizeof(fen_info->dst), | |
4518 | fen_info->dst_len, | |
4519 | MLXSW_SP_L3_PROTO_IPV4); | |
9aecce1c IS |
4520 | if (IS_ERR(fib_node)) { |
4521 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to get FIB node\n"); | |
4522 | return PTR_ERR(fib_node); | |
b45f64d1 | 4523 | } |
61c503f9 | 4524 | |
4f1c7f1f IS |
4525 | fib4_entry = mlxsw_sp_fib4_entry_create(mlxsw_sp, fib_node, fen_info); |
4526 | if (IS_ERR(fib4_entry)) { | |
9aecce1c | 4527 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to create FIB entry\n"); |
4f1c7f1f | 4528 | err = PTR_ERR(fib4_entry); |
9aecce1c IS |
4529 | goto err_fib4_entry_create; |
4530 | } | |
5b004412 | 4531 | |
4f1c7f1f | 4532 | err = mlxsw_sp_fib4_node_entry_link(mlxsw_sp, fib4_entry, replace, |
599cf8f9 | 4533 | append); |
b45f64d1 | 4534 | if (err) { |
9aecce1c IS |
4535 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to link FIB entry to node\n"); |
4536 | goto err_fib4_node_entry_link; | |
b45f64d1 | 4537 | } |
9aecce1c | 4538 | |
4f1c7f1f | 4539 | mlxsw_sp_fib4_entry_replace(mlxsw_sp, fib4_entry, replace); |
599cf8f9 | 4540 | |
61c503f9 JP |
4541 | return 0; |
4542 | ||
9aecce1c | 4543 | err_fib4_node_entry_link: |
4f1c7f1f | 4544 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); |
9aecce1c | 4545 | err_fib4_entry_create: |
731ea1ca | 4546 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); |
61c503f9 JP |
4547 | return err; |
4548 | } | |
4549 | ||
37956d78 JP |
4550 | static void mlxsw_sp_router_fib4_del(struct mlxsw_sp *mlxsw_sp, |
4551 | struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 4552 | { |
4f1c7f1f | 4553 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 4554 | struct mlxsw_sp_fib_node *fib_node; |
61c503f9 | 4555 | |
9011b677 | 4556 | if (mlxsw_sp->router->aborted) |
37956d78 | 4557 | return; |
b45f64d1 | 4558 | |
4f1c7f1f IS |
4559 | fib4_entry = mlxsw_sp_fib4_entry_lookup(mlxsw_sp, fen_info); |
4560 | if (WARN_ON(!fib4_entry)) | |
37956d78 | 4561 | return; |
4f1c7f1f | 4562 | fib_node = fib4_entry->common.fib_node; |
5b004412 | 4563 | |
4f1c7f1f IS |
4564 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib4_entry); |
4565 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); | |
731ea1ca | 4566 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); |
61c503f9 | 4567 | } |
b45f64d1 | 4568 | |
428b851f IS |
4569 | static bool mlxsw_sp_fib6_rt_should_ignore(const struct rt6_info *rt) |
4570 | { | |
4571 | /* Packets with link-local destination IP arriving to the router | |
4572 | * are trapped to the CPU, so no need to program specific routes | |
4573 | * for them. | |
4574 | */ | |
4575 | if (ipv6_addr_type(&rt->rt6i_dst.addr) & IPV6_ADDR_LINKLOCAL) | |
4576 | return true; | |
4577 | ||
4578 | /* Multicast routes aren't supported, so ignore them. Neighbour | |
4579 | * Discovery packets are specifically trapped. | |
4580 | */ | |
4581 | if (ipv6_addr_type(&rt->rt6i_dst.addr) & IPV6_ADDR_MULTICAST) | |
4582 | return true; | |
4583 | ||
4584 | /* Cloned routes are irrelevant in the forwarding path. */ | |
4585 | if (rt->rt6i_flags & RTF_CACHE) | |
4586 | return true; | |
4587 | ||
4588 | return false; | |
4589 | } | |
4590 | ||
4591 | static struct mlxsw_sp_rt6 *mlxsw_sp_rt6_create(struct rt6_info *rt) | |
4592 | { | |
4593 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
4594 | ||
4595 | mlxsw_sp_rt6 = kzalloc(sizeof(*mlxsw_sp_rt6), GFP_KERNEL); | |
4596 | if (!mlxsw_sp_rt6) | |
4597 | return ERR_PTR(-ENOMEM); | |
4598 | ||
4599 | /* In case of route replace, replaced route is deleted with | |
4600 | * no notification. Take reference to prevent accessing freed | |
4601 | * memory. | |
4602 | */ | |
4603 | mlxsw_sp_rt6->rt = rt; | |
4604 | rt6_hold(rt); | |
4605 | ||
4606 | return mlxsw_sp_rt6; | |
4607 | } | |
4608 | ||
4609 | #if IS_ENABLED(CONFIG_IPV6) | |
4610 | static void mlxsw_sp_rt6_release(struct rt6_info *rt) | |
4611 | { | |
4612 | rt6_release(rt); | |
4613 | } | |
4614 | #else | |
4615 | static void mlxsw_sp_rt6_release(struct rt6_info *rt) | |
4616 | { | |
4617 | } | |
4618 | #endif | |
4619 | ||
4620 | static void mlxsw_sp_rt6_destroy(struct mlxsw_sp_rt6 *mlxsw_sp_rt6) | |
4621 | { | |
4622 | mlxsw_sp_rt6_release(mlxsw_sp_rt6->rt); | |
4623 | kfree(mlxsw_sp_rt6); | |
4624 | } | |
4625 | ||
4626 | static bool mlxsw_sp_fib6_rt_can_mp(const struct rt6_info *rt) | |
4627 | { | |
4628 | /* RTF_CACHE routes are ignored */ | |
4629 | return (rt->rt6i_flags & (RTF_GATEWAY | RTF_ADDRCONF)) == RTF_GATEWAY; | |
4630 | } | |
4631 | ||
4632 | static struct rt6_info * | |
4633 | mlxsw_sp_fib6_entry_rt(const struct mlxsw_sp_fib6_entry *fib6_entry) | |
4634 | { | |
4635 | return list_first_entry(&fib6_entry->rt6_list, struct mlxsw_sp_rt6, | |
4636 | list)->rt; | |
4637 | } | |
4638 | ||
4639 | static struct mlxsw_sp_fib6_entry * | |
4640 | mlxsw_sp_fib6_node_mp_entry_find(const struct mlxsw_sp_fib_node *fib_node, | |
0a7fd1ac | 4641 | const struct rt6_info *nrt, bool replace) |
428b851f IS |
4642 | { |
4643 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
4644 | ||
0a7fd1ac | 4645 | if (!mlxsw_sp_fib6_rt_can_mp(nrt) || replace) |
428b851f IS |
4646 | return NULL; |
4647 | ||
4648 | list_for_each_entry(fib6_entry, &fib_node->entry_list, common.list) { | |
4649 | struct rt6_info *rt = mlxsw_sp_fib6_entry_rt(fib6_entry); | |
4650 | ||
4651 | /* RT6_TABLE_LOCAL and RT6_TABLE_MAIN share the same | |
4652 | * virtual router. | |
4653 | */ | |
4654 | if (rt->rt6i_table->tb6_id > nrt->rt6i_table->tb6_id) | |
4655 | continue; | |
4656 | if (rt->rt6i_table->tb6_id != nrt->rt6i_table->tb6_id) | |
4657 | break; | |
4658 | if (rt->rt6i_metric < nrt->rt6i_metric) | |
4659 | continue; | |
4660 | if (rt->rt6i_metric == nrt->rt6i_metric && | |
4661 | mlxsw_sp_fib6_rt_can_mp(rt)) | |
4662 | return fib6_entry; | |
4663 | if (rt->rt6i_metric > nrt->rt6i_metric) | |
4664 | break; | |
4665 | } | |
4666 | ||
4667 | return NULL; | |
4668 | } | |
4669 | ||
4670 | static struct mlxsw_sp_rt6 * | |
4671 | mlxsw_sp_fib6_entry_rt_find(const struct mlxsw_sp_fib6_entry *fib6_entry, | |
4672 | const struct rt6_info *rt) | |
4673 | { | |
4674 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
4675 | ||
4676 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
4677 | if (mlxsw_sp_rt6->rt == rt) | |
4678 | return mlxsw_sp_rt6; | |
4679 | } | |
4680 | ||
4681 | return NULL; | |
4682 | } | |
4683 | ||
8f28a309 PM |
4684 | static bool mlxsw_sp_nexthop6_ipip_type(const struct mlxsw_sp *mlxsw_sp, |
4685 | const struct rt6_info *rt, | |
4686 | enum mlxsw_sp_ipip_type *ret) | |
4687 | { | |
4688 | return rt->dst.dev && | |
4689 | mlxsw_sp_netdev_ipip_type(mlxsw_sp, rt->dst.dev, ret); | |
4690 | } | |
4691 | ||
35225e47 PM |
4692 | static int mlxsw_sp_nexthop6_type_init(struct mlxsw_sp *mlxsw_sp, |
4693 | struct mlxsw_sp_nexthop_group *nh_grp, | |
4694 | struct mlxsw_sp_nexthop *nh, | |
4695 | const struct rt6_info *rt) | |
428b851f | 4696 | { |
8f28a309 | 4697 | struct mlxsw_sp_router *router = mlxsw_sp->router; |
428b851f | 4698 | struct net_device *dev = rt->dst.dev; |
8f28a309 | 4699 | enum mlxsw_sp_ipip_type ipipt; |
428b851f IS |
4700 | struct mlxsw_sp_rif *rif; |
4701 | int err; | |
4702 | ||
8f28a309 PM |
4703 | if (mlxsw_sp_nexthop6_ipip_type(mlxsw_sp, rt, &ipipt) && |
4704 | router->ipip_ops_arr[ipipt]->can_offload(mlxsw_sp, dev, | |
4705 | MLXSW_SP_L3_PROTO_IPV6)) { | |
4706 | nh->type = MLXSW_SP_NEXTHOP_TYPE_IPIP; | |
4cccb737 | 4707 | err = mlxsw_sp_nexthop_ipip_init(mlxsw_sp, nh, dev); |
de0f43c0 PM |
4708 | if (err) |
4709 | return err; | |
4710 | mlxsw_sp_nexthop_rif_init(nh, &nh->ipip_entry->ol_lb->common); | |
4711 | return 0; | |
8f28a309 PM |
4712 | } |
4713 | ||
35225e47 | 4714 | nh->type = MLXSW_SP_NEXTHOP_TYPE_ETH; |
428b851f IS |
4715 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
4716 | if (!rif) | |
4717 | return 0; | |
4718 | mlxsw_sp_nexthop_rif_init(nh, rif); | |
4719 | ||
4720 | err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); | |
4721 | if (err) | |
4722 | goto err_nexthop_neigh_init; | |
4723 | ||
4724 | return 0; | |
4725 | ||
4726 | err_nexthop_neigh_init: | |
4727 | mlxsw_sp_nexthop_rif_fini(nh); | |
4728 | return err; | |
4729 | } | |
4730 | ||
35225e47 PM |
4731 | static void mlxsw_sp_nexthop6_type_fini(struct mlxsw_sp *mlxsw_sp, |
4732 | struct mlxsw_sp_nexthop *nh) | |
4733 | { | |
4734 | mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh); | |
4735 | } | |
4736 | ||
4737 | static int mlxsw_sp_nexthop6_init(struct mlxsw_sp *mlxsw_sp, | |
4738 | struct mlxsw_sp_nexthop_group *nh_grp, | |
4739 | struct mlxsw_sp_nexthop *nh, | |
4740 | const struct rt6_info *rt) | |
4741 | { | |
4742 | struct net_device *dev = rt->dst.dev; | |
4743 | ||
4744 | nh->nh_grp = nh_grp; | |
408bd946 | 4745 | nh->nh_weight = 1; |
35225e47 | 4746 | memcpy(&nh->gw_addr, &rt->rt6i_gateway, sizeof(nh->gw_addr)); |
a5390278 | 4747 | mlxsw_sp_nexthop_counter_alloc(mlxsw_sp, nh); |
35225e47 | 4748 | |
dbe4598c AS |
4749 | list_add_tail(&nh->router_list_node, &mlxsw_sp->router->nexthop_list); |
4750 | ||
35225e47 PM |
4751 | if (!dev) |
4752 | return 0; | |
4753 | nh->ifindex = dev->ifindex; | |
4754 | ||
4755 | return mlxsw_sp_nexthop6_type_init(mlxsw_sp, nh_grp, nh, rt); | |
4756 | } | |
4757 | ||
428b851f IS |
4758 | static void mlxsw_sp_nexthop6_fini(struct mlxsw_sp *mlxsw_sp, |
4759 | struct mlxsw_sp_nexthop *nh) | |
4760 | { | |
35225e47 | 4761 | mlxsw_sp_nexthop6_type_fini(mlxsw_sp, nh); |
dbe4598c | 4762 | list_del(&nh->router_list_node); |
a5390278 | 4763 | mlxsw_sp_nexthop_counter_free(mlxsw_sp, nh); |
428b851f IS |
4764 | } |
4765 | ||
f6050ee6 PM |
4766 | static bool mlxsw_sp_rt6_is_gateway(const struct mlxsw_sp *mlxsw_sp, |
4767 | const struct rt6_info *rt) | |
4768 | { | |
8f28a309 PM |
4769 | return rt->rt6i_flags & RTF_GATEWAY || |
4770 | mlxsw_sp_nexthop6_ipip_type(mlxsw_sp, rt, NULL); | |
f6050ee6 PM |
4771 | } |
4772 | ||
428b851f IS |
4773 | static struct mlxsw_sp_nexthop_group * |
4774 | mlxsw_sp_nexthop6_group_create(struct mlxsw_sp *mlxsw_sp, | |
4775 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
4776 | { | |
4777 | struct mlxsw_sp_nexthop_group *nh_grp; | |
4778 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
4779 | struct mlxsw_sp_nexthop *nh; | |
4780 | size_t alloc_size; | |
4781 | int i = 0; | |
4782 | int err; | |
4783 | ||
4784 | alloc_size = sizeof(*nh_grp) + | |
4785 | fib6_entry->nrt6 * sizeof(struct mlxsw_sp_nexthop); | |
4786 | nh_grp = kzalloc(alloc_size, GFP_KERNEL); | |
4787 | if (!nh_grp) | |
4788 | return ERR_PTR(-ENOMEM); | |
4789 | INIT_LIST_HEAD(&nh_grp->fib_list); | |
4790 | #if IS_ENABLED(CONFIG_IPV6) | |
4791 | nh_grp->neigh_tbl = &nd_tbl; | |
4792 | #endif | |
4793 | mlxsw_sp_rt6 = list_first_entry(&fib6_entry->rt6_list, | |
4794 | struct mlxsw_sp_rt6, list); | |
f6050ee6 | 4795 | nh_grp->gateway = mlxsw_sp_rt6_is_gateway(mlxsw_sp, mlxsw_sp_rt6->rt); |
428b851f IS |
4796 | nh_grp->count = fib6_entry->nrt6; |
4797 | for (i = 0; i < nh_grp->count; i++) { | |
4798 | struct rt6_info *rt = mlxsw_sp_rt6->rt; | |
4799 | ||
4800 | nh = &nh_grp->nexthops[i]; | |
4801 | err = mlxsw_sp_nexthop6_init(mlxsw_sp, nh_grp, nh, rt); | |
4802 | if (err) | |
4803 | goto err_nexthop6_init; | |
4804 | mlxsw_sp_rt6 = list_next_entry(mlxsw_sp_rt6, list); | |
4805 | } | |
e6f3b379 AS |
4806 | |
4807 | err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); | |
4808 | if (err) | |
4809 | goto err_nexthop_group_insert; | |
4810 | ||
428b851f IS |
4811 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
4812 | return nh_grp; | |
4813 | ||
e6f3b379 | 4814 | err_nexthop_group_insert: |
428b851f IS |
4815 | err_nexthop6_init: |
4816 | for (i--; i >= 0; i--) { | |
4817 | nh = &nh_grp->nexthops[i]; | |
4818 | mlxsw_sp_nexthop6_fini(mlxsw_sp, nh); | |
4819 | } | |
4820 | kfree(nh_grp); | |
4821 | return ERR_PTR(err); | |
4822 | } | |
4823 | ||
4824 | static void | |
4825 | mlxsw_sp_nexthop6_group_destroy(struct mlxsw_sp *mlxsw_sp, | |
4826 | struct mlxsw_sp_nexthop_group *nh_grp) | |
4827 | { | |
4828 | struct mlxsw_sp_nexthop *nh; | |
4829 | int i = nh_grp->count; | |
4830 | ||
e6f3b379 | 4831 | mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); |
428b851f IS |
4832 | for (i--; i >= 0; i--) { |
4833 | nh = &nh_grp->nexthops[i]; | |
4834 | mlxsw_sp_nexthop6_fini(mlxsw_sp, nh); | |
4835 | } | |
4836 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); | |
4837 | WARN_ON(nh_grp->adj_index_valid); | |
4838 | kfree(nh_grp); | |
4839 | } | |
4840 | ||
4841 | static int mlxsw_sp_nexthop6_group_get(struct mlxsw_sp *mlxsw_sp, | |
4842 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
4843 | { | |
4844 | struct mlxsw_sp_nexthop_group *nh_grp; | |
4845 | ||
e6f3b379 AS |
4846 | nh_grp = mlxsw_sp_nexthop6_group_lookup(mlxsw_sp, fib6_entry); |
4847 | if (!nh_grp) { | |
4848 | nh_grp = mlxsw_sp_nexthop6_group_create(mlxsw_sp, fib6_entry); | |
4849 | if (IS_ERR(nh_grp)) | |
4850 | return PTR_ERR(nh_grp); | |
4851 | } | |
428b851f IS |
4852 | |
4853 | list_add_tail(&fib6_entry->common.nexthop_group_node, | |
4854 | &nh_grp->fib_list); | |
4855 | fib6_entry->common.nh_group = nh_grp; | |
4856 | ||
4857 | return 0; | |
4858 | } | |
4859 | ||
4860 | static void mlxsw_sp_nexthop6_group_put(struct mlxsw_sp *mlxsw_sp, | |
4861 | struct mlxsw_sp_fib_entry *fib_entry) | |
4862 | { | |
4863 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
4864 | ||
4865 | list_del(&fib_entry->nexthop_group_node); | |
4866 | if (!list_empty(&nh_grp->fib_list)) | |
4867 | return; | |
4868 | mlxsw_sp_nexthop6_group_destroy(mlxsw_sp, nh_grp); | |
4869 | } | |
4870 | ||
4871 | static int | |
4872 | mlxsw_sp_nexthop6_group_update(struct mlxsw_sp *mlxsw_sp, | |
4873 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
4874 | { | |
4875 | struct mlxsw_sp_nexthop_group *old_nh_grp = fib6_entry->common.nh_group; | |
4876 | int err; | |
4877 | ||
4878 | fib6_entry->common.nh_group = NULL; | |
4879 | list_del(&fib6_entry->common.nexthop_group_node); | |
4880 | ||
4881 | err = mlxsw_sp_nexthop6_group_get(mlxsw_sp, fib6_entry); | |
4882 | if (err) | |
4883 | goto err_nexthop6_group_get; | |
4884 | ||
4885 | /* In case this entry is offloaded, then the adjacency index | |
4886 | * currently associated with it in the device's table is that | |
4887 | * of the old group. Start using the new one instead. | |
4888 | */ | |
4889 | err = mlxsw_sp_fib_node_entry_add(mlxsw_sp, &fib6_entry->common); | |
4890 | if (err) | |
4891 | goto err_fib_node_entry_add; | |
4892 | ||
4893 | if (list_empty(&old_nh_grp->fib_list)) | |
4894 | mlxsw_sp_nexthop6_group_destroy(mlxsw_sp, old_nh_grp); | |
4895 | ||
4896 | return 0; | |
4897 | ||
4898 | err_fib_node_entry_add: | |
4899 | mlxsw_sp_nexthop6_group_put(mlxsw_sp, &fib6_entry->common); | |
4900 | err_nexthop6_group_get: | |
4901 | list_add_tail(&fib6_entry->common.nexthop_group_node, | |
4902 | &old_nh_grp->fib_list); | |
4903 | fib6_entry->common.nh_group = old_nh_grp; | |
4904 | return err; | |
4905 | } | |
4906 | ||
4907 | static int | |
4908 | mlxsw_sp_fib6_entry_nexthop_add(struct mlxsw_sp *mlxsw_sp, | |
4909 | struct mlxsw_sp_fib6_entry *fib6_entry, | |
4910 | struct rt6_info *rt) | |
4911 | { | |
4912 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
4913 | int err; | |
4914 | ||
4915 | mlxsw_sp_rt6 = mlxsw_sp_rt6_create(rt); | |
4916 | if (IS_ERR(mlxsw_sp_rt6)) | |
4917 | return PTR_ERR(mlxsw_sp_rt6); | |
4918 | ||
4919 | list_add_tail(&mlxsw_sp_rt6->list, &fib6_entry->rt6_list); | |
4920 | fib6_entry->nrt6++; | |
4921 | ||
4922 | err = mlxsw_sp_nexthop6_group_update(mlxsw_sp, fib6_entry); | |
4923 | if (err) | |
4924 | goto err_nexthop6_group_update; | |
4925 | ||
4926 | return 0; | |
4927 | ||
4928 | err_nexthop6_group_update: | |
4929 | fib6_entry->nrt6--; | |
4930 | list_del(&mlxsw_sp_rt6->list); | |
4931 | mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); | |
4932 | return err; | |
4933 | } | |
4934 | ||
4935 | static void | |
4936 | mlxsw_sp_fib6_entry_nexthop_del(struct mlxsw_sp *mlxsw_sp, | |
4937 | struct mlxsw_sp_fib6_entry *fib6_entry, | |
4938 | struct rt6_info *rt) | |
4939 | { | |
4940 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
4941 | ||
4942 | mlxsw_sp_rt6 = mlxsw_sp_fib6_entry_rt_find(fib6_entry, rt); | |
4943 | if (WARN_ON(!mlxsw_sp_rt6)) | |
4944 | return; | |
4945 | ||
4946 | fib6_entry->nrt6--; | |
4947 | list_del(&mlxsw_sp_rt6->list); | |
4948 | mlxsw_sp_nexthop6_group_update(mlxsw_sp, fib6_entry); | |
4949 | mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); | |
4950 | } | |
4951 | ||
f6050ee6 PM |
4952 | static void mlxsw_sp_fib6_entry_type_set(struct mlxsw_sp *mlxsw_sp, |
4953 | struct mlxsw_sp_fib_entry *fib_entry, | |
428b851f IS |
4954 | const struct rt6_info *rt) |
4955 | { | |
4956 | /* Packets hitting RTF_REJECT routes need to be discarded by the | |
4957 | * stack. We can rely on their destination device not having a | |
4958 | * RIF (it's the loopback device) and can thus use action type | |
4959 | * local, which will cause them to be trapped with a lower | |
4960 | * priority than packets that need to be locally received. | |
4961 | */ | |
d3b6d377 | 4962 | if (rt->rt6i_flags & (RTF_LOCAL | RTF_ANYCAST)) |
428b851f IS |
4963 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; |
4964 | else if (rt->rt6i_flags & RTF_REJECT) | |
4965 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
f6050ee6 | 4966 | else if (mlxsw_sp_rt6_is_gateway(mlxsw_sp, rt)) |
428b851f IS |
4967 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; |
4968 | else | |
4969 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
4970 | } | |
4971 | ||
4972 | static void | |
4973 | mlxsw_sp_fib6_entry_rt_destroy_all(struct mlxsw_sp_fib6_entry *fib6_entry) | |
4974 | { | |
4975 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6, *tmp; | |
4976 | ||
4977 | list_for_each_entry_safe(mlxsw_sp_rt6, tmp, &fib6_entry->rt6_list, | |
4978 | list) { | |
4979 | fib6_entry->nrt6--; | |
4980 | list_del(&mlxsw_sp_rt6->list); | |
4981 | mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); | |
4982 | } | |
4983 | } | |
4984 | ||
4985 | static struct mlxsw_sp_fib6_entry * | |
4986 | mlxsw_sp_fib6_entry_create(struct mlxsw_sp *mlxsw_sp, | |
4987 | struct mlxsw_sp_fib_node *fib_node, | |
4988 | struct rt6_info *rt) | |
4989 | { | |
4990 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
4991 | struct mlxsw_sp_fib_entry *fib_entry; | |
4992 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
4993 | int err; | |
4994 | ||
4995 | fib6_entry = kzalloc(sizeof(*fib6_entry), GFP_KERNEL); | |
4996 | if (!fib6_entry) | |
4997 | return ERR_PTR(-ENOMEM); | |
4998 | fib_entry = &fib6_entry->common; | |
4999 | ||
5000 | mlxsw_sp_rt6 = mlxsw_sp_rt6_create(rt); | |
5001 | if (IS_ERR(mlxsw_sp_rt6)) { | |
5002 | err = PTR_ERR(mlxsw_sp_rt6); | |
5003 | goto err_rt6_create; | |
5004 | } | |
5005 | ||
f6050ee6 | 5006 | mlxsw_sp_fib6_entry_type_set(mlxsw_sp, fib_entry, mlxsw_sp_rt6->rt); |
428b851f IS |
5007 | |
5008 | INIT_LIST_HEAD(&fib6_entry->rt6_list); | |
5009 | list_add_tail(&mlxsw_sp_rt6->list, &fib6_entry->rt6_list); | |
5010 | fib6_entry->nrt6 = 1; | |
5011 | err = mlxsw_sp_nexthop6_group_get(mlxsw_sp, fib6_entry); | |
5012 | if (err) | |
5013 | goto err_nexthop6_group_get; | |
5014 | ||
5015 | fib_entry->fib_node = fib_node; | |
5016 | ||
5017 | return fib6_entry; | |
5018 | ||
5019 | err_nexthop6_group_get: | |
5020 | list_del(&mlxsw_sp_rt6->list); | |
5021 | mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); | |
5022 | err_rt6_create: | |
5023 | kfree(fib6_entry); | |
5024 | return ERR_PTR(err); | |
5025 | } | |
5026 | ||
5027 | static void mlxsw_sp_fib6_entry_destroy(struct mlxsw_sp *mlxsw_sp, | |
5028 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
5029 | { | |
5030 | mlxsw_sp_nexthop6_group_put(mlxsw_sp, &fib6_entry->common); | |
5031 | mlxsw_sp_fib6_entry_rt_destroy_all(fib6_entry); | |
5032 | WARN_ON(fib6_entry->nrt6); | |
5033 | kfree(fib6_entry); | |
5034 | } | |
5035 | ||
5036 | static struct mlxsw_sp_fib6_entry * | |
5037 | mlxsw_sp_fib6_node_entry_find(const struct mlxsw_sp_fib_node *fib_node, | |
0a7fd1ac | 5038 | const struct rt6_info *nrt, bool replace) |
428b851f | 5039 | { |
0a7fd1ac | 5040 | struct mlxsw_sp_fib6_entry *fib6_entry, *fallback = NULL; |
428b851f IS |
5041 | |
5042 | list_for_each_entry(fib6_entry, &fib_node->entry_list, common.list) { | |
5043 | struct rt6_info *rt = mlxsw_sp_fib6_entry_rt(fib6_entry); | |
5044 | ||
5045 | if (rt->rt6i_table->tb6_id > nrt->rt6i_table->tb6_id) | |
5046 | continue; | |
5047 | if (rt->rt6i_table->tb6_id != nrt->rt6i_table->tb6_id) | |
5048 | break; | |
0a7fd1ac IS |
5049 | if (replace && rt->rt6i_metric == nrt->rt6i_metric) { |
5050 | if (mlxsw_sp_fib6_rt_can_mp(rt) == | |
5051 | mlxsw_sp_fib6_rt_can_mp(nrt)) | |
5052 | return fib6_entry; | |
5053 | if (mlxsw_sp_fib6_rt_can_mp(nrt)) | |
5054 | fallback = fallback ?: fib6_entry; | |
5055 | } | |
428b851f | 5056 | if (rt->rt6i_metric > nrt->rt6i_metric) |
0a7fd1ac | 5057 | return fallback ?: fib6_entry; |
428b851f IS |
5058 | } |
5059 | ||
0a7fd1ac | 5060 | return fallback; |
428b851f IS |
5061 | } |
5062 | ||
5063 | static int | |
0a7fd1ac IS |
5064 | mlxsw_sp_fib6_node_list_insert(struct mlxsw_sp_fib6_entry *new6_entry, |
5065 | bool replace) | |
428b851f IS |
5066 | { |
5067 | struct mlxsw_sp_fib_node *fib_node = new6_entry->common.fib_node; | |
5068 | struct rt6_info *nrt = mlxsw_sp_fib6_entry_rt(new6_entry); | |
5069 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
5070 | ||
0a7fd1ac IS |
5071 | fib6_entry = mlxsw_sp_fib6_node_entry_find(fib_node, nrt, replace); |
5072 | ||
5073 | if (replace && WARN_ON(!fib6_entry)) | |
5074 | return -EINVAL; | |
428b851f IS |
5075 | |
5076 | if (fib6_entry) { | |
5077 | list_add_tail(&new6_entry->common.list, | |
5078 | &fib6_entry->common.list); | |
5079 | } else { | |
5080 | struct mlxsw_sp_fib6_entry *last; | |
5081 | ||
5082 | list_for_each_entry(last, &fib_node->entry_list, common.list) { | |
5083 | struct rt6_info *rt = mlxsw_sp_fib6_entry_rt(last); | |
5084 | ||
5085 | if (nrt->rt6i_table->tb6_id > rt->rt6i_table->tb6_id) | |
5086 | break; | |
5087 | fib6_entry = last; | |
5088 | } | |
5089 | ||
5090 | if (fib6_entry) | |
5091 | list_add(&new6_entry->common.list, | |
5092 | &fib6_entry->common.list); | |
5093 | else | |
5094 | list_add(&new6_entry->common.list, | |
5095 | &fib_node->entry_list); | |
5096 | } | |
5097 | ||
5098 | return 0; | |
5099 | } | |
5100 | ||
5101 | static void | |
5102 | mlxsw_sp_fib6_node_list_remove(struct mlxsw_sp_fib6_entry *fib6_entry) | |
5103 | { | |
5104 | list_del(&fib6_entry->common.list); | |
5105 | } | |
5106 | ||
5107 | static int mlxsw_sp_fib6_node_entry_link(struct mlxsw_sp *mlxsw_sp, | |
0a7fd1ac IS |
5108 | struct mlxsw_sp_fib6_entry *fib6_entry, |
5109 | bool replace) | |
428b851f IS |
5110 | { |
5111 | int err; | |
5112 | ||
0a7fd1ac | 5113 | err = mlxsw_sp_fib6_node_list_insert(fib6_entry, replace); |
428b851f IS |
5114 | if (err) |
5115 | return err; | |
5116 | ||
5117 | err = mlxsw_sp_fib_node_entry_add(mlxsw_sp, &fib6_entry->common); | |
5118 | if (err) | |
5119 | goto err_fib_node_entry_add; | |
5120 | ||
5121 | return 0; | |
5122 | ||
5123 | err_fib_node_entry_add: | |
5124 | mlxsw_sp_fib6_node_list_remove(fib6_entry); | |
5125 | return err; | |
5126 | } | |
5127 | ||
5128 | static void | |
5129 | mlxsw_sp_fib6_node_entry_unlink(struct mlxsw_sp *mlxsw_sp, | |
5130 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
5131 | { | |
5132 | mlxsw_sp_fib_node_entry_del(mlxsw_sp, &fib6_entry->common); | |
5133 | mlxsw_sp_fib6_node_list_remove(fib6_entry); | |
5134 | } | |
5135 | ||
5136 | static struct mlxsw_sp_fib6_entry * | |
5137 | mlxsw_sp_fib6_entry_lookup(struct mlxsw_sp *mlxsw_sp, | |
5138 | const struct rt6_info *rt) | |
5139 | { | |
5140 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
5141 | struct mlxsw_sp_fib_node *fib_node; | |
5142 | struct mlxsw_sp_fib *fib; | |
5143 | struct mlxsw_sp_vr *vr; | |
5144 | ||
5145 | vr = mlxsw_sp_vr_find(mlxsw_sp, rt->rt6i_table->tb6_id); | |
5146 | if (!vr) | |
5147 | return NULL; | |
5148 | fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV6); | |
5149 | ||
5150 | fib_node = mlxsw_sp_fib_node_lookup(fib, &rt->rt6i_dst.addr, | |
5151 | sizeof(rt->rt6i_dst.addr), | |
5152 | rt->rt6i_dst.plen); | |
5153 | if (!fib_node) | |
5154 | return NULL; | |
5155 | ||
5156 | list_for_each_entry(fib6_entry, &fib_node->entry_list, common.list) { | |
5157 | struct rt6_info *iter_rt = mlxsw_sp_fib6_entry_rt(fib6_entry); | |
5158 | ||
5159 | if (rt->rt6i_table->tb6_id == iter_rt->rt6i_table->tb6_id && | |
5160 | rt->rt6i_metric == iter_rt->rt6i_metric && | |
5161 | mlxsw_sp_fib6_entry_rt_find(fib6_entry, rt)) | |
5162 | return fib6_entry; | |
5163 | } | |
5164 | ||
5165 | return NULL; | |
5166 | } | |
5167 | ||
0a7fd1ac IS |
5168 | static void mlxsw_sp_fib6_entry_replace(struct mlxsw_sp *mlxsw_sp, |
5169 | struct mlxsw_sp_fib6_entry *fib6_entry, | |
5170 | bool replace) | |
5171 | { | |
5172 | struct mlxsw_sp_fib_node *fib_node = fib6_entry->common.fib_node; | |
5173 | struct mlxsw_sp_fib6_entry *replaced; | |
5174 | ||
5175 | if (!replace) | |
5176 | return; | |
5177 | ||
5178 | replaced = list_next_entry(fib6_entry, common.list); | |
5179 | ||
5180 | mlxsw_sp_fib6_node_entry_unlink(mlxsw_sp, replaced); | |
5181 | mlxsw_sp_fib6_entry_destroy(mlxsw_sp, replaced); | |
5182 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); | |
5183 | } | |
5184 | ||
428b851f | 5185 | static int mlxsw_sp_router_fib6_add(struct mlxsw_sp *mlxsw_sp, |
0a7fd1ac | 5186 | struct rt6_info *rt, bool replace) |
428b851f IS |
5187 | { |
5188 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
5189 | struct mlxsw_sp_fib_node *fib_node; | |
5190 | int err; | |
5191 | ||
5192 | if (mlxsw_sp->router->aborted) | |
5193 | return 0; | |
5194 | ||
f36f5ac6 IS |
5195 | if (rt->rt6i_src.plen) |
5196 | return -EINVAL; | |
5197 | ||
428b851f IS |
5198 | if (mlxsw_sp_fib6_rt_should_ignore(rt)) |
5199 | return 0; | |
5200 | ||
5201 | fib_node = mlxsw_sp_fib_node_get(mlxsw_sp, rt->rt6i_table->tb6_id, | |
5202 | &rt->rt6i_dst.addr, | |
5203 | sizeof(rt->rt6i_dst.addr), | |
5204 | rt->rt6i_dst.plen, | |
5205 | MLXSW_SP_L3_PROTO_IPV6); | |
5206 | if (IS_ERR(fib_node)) | |
5207 | return PTR_ERR(fib_node); | |
5208 | ||
5209 | /* Before creating a new entry, try to append route to an existing | |
5210 | * multipath entry. | |
5211 | */ | |
0a7fd1ac | 5212 | fib6_entry = mlxsw_sp_fib6_node_mp_entry_find(fib_node, rt, replace); |
428b851f IS |
5213 | if (fib6_entry) { |
5214 | err = mlxsw_sp_fib6_entry_nexthop_add(mlxsw_sp, fib6_entry, rt); | |
5215 | if (err) | |
5216 | goto err_fib6_entry_nexthop_add; | |
5217 | return 0; | |
5218 | } | |
5219 | ||
5220 | fib6_entry = mlxsw_sp_fib6_entry_create(mlxsw_sp, fib_node, rt); | |
5221 | if (IS_ERR(fib6_entry)) { | |
5222 | err = PTR_ERR(fib6_entry); | |
5223 | goto err_fib6_entry_create; | |
5224 | } | |
5225 | ||
0a7fd1ac | 5226 | err = mlxsw_sp_fib6_node_entry_link(mlxsw_sp, fib6_entry, replace); |
428b851f IS |
5227 | if (err) |
5228 | goto err_fib6_node_entry_link; | |
5229 | ||
0a7fd1ac IS |
5230 | mlxsw_sp_fib6_entry_replace(mlxsw_sp, fib6_entry, replace); |
5231 | ||
428b851f IS |
5232 | return 0; |
5233 | ||
5234 | err_fib6_node_entry_link: | |
5235 | mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); | |
5236 | err_fib6_entry_create: | |
5237 | err_fib6_entry_nexthop_add: | |
5238 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); | |
5239 | return err; | |
5240 | } | |
5241 | ||
5242 | static void mlxsw_sp_router_fib6_del(struct mlxsw_sp *mlxsw_sp, | |
5243 | struct rt6_info *rt) | |
5244 | { | |
5245 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
5246 | struct mlxsw_sp_fib_node *fib_node; | |
5247 | ||
5248 | if (mlxsw_sp->router->aborted) | |
5249 | return; | |
5250 | ||
5251 | if (mlxsw_sp_fib6_rt_should_ignore(rt)) | |
5252 | return; | |
5253 | ||
5254 | fib6_entry = mlxsw_sp_fib6_entry_lookup(mlxsw_sp, rt); | |
5255 | if (WARN_ON(!fib6_entry)) | |
5256 | return; | |
5257 | ||
5258 | /* If route is part of a multipath entry, but not the last one | |
5259 | * removed, then only reduce its nexthop group. | |
5260 | */ | |
5261 | if (!list_is_singular(&fib6_entry->rt6_list)) { | |
5262 | mlxsw_sp_fib6_entry_nexthop_del(mlxsw_sp, fib6_entry, rt); | |
5263 | return; | |
5264 | } | |
5265 | ||
5266 | fib_node = fib6_entry->common.fib_node; | |
5267 | ||
5268 | mlxsw_sp_fib6_node_entry_unlink(mlxsw_sp, fib6_entry); | |
5269 | mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); | |
5270 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); | |
5271 | } | |
5272 | ||
bc65a8a4 IS |
5273 | static int __mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp, |
5274 | enum mlxsw_reg_ralxx_protocol proto, | |
5275 | u8 tree_id) | |
b45f64d1 JP |
5276 | { |
5277 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
5278 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
b5d90e6d | 5279 | int i, err; |
b45f64d1 | 5280 | |
bc65a8a4 | 5281 | mlxsw_reg_ralta_pack(ralta_pl, true, proto, tree_id); |
b45f64d1 JP |
5282 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
5283 | if (err) | |
5284 | return err; | |
5285 | ||
bc65a8a4 | 5286 | mlxsw_reg_ralst_pack(ralst_pl, 0xff, tree_id); |
b45f64d1 JP |
5287 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); |
5288 | if (err) | |
5289 | return err; | |
5290 | ||
b5d90e6d | 5291 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 5292 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; |
b5d90e6d IS |
5293 | char raltb_pl[MLXSW_REG_RALTB_LEN]; |
5294 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
b45f64d1 | 5295 | |
bc65a8a4 | 5296 | mlxsw_reg_raltb_pack(raltb_pl, vr->id, proto, tree_id); |
b5d90e6d IS |
5297 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), |
5298 | raltb_pl); | |
5299 | if (err) | |
5300 | return err; | |
5301 | ||
bc65a8a4 IS |
5302 | mlxsw_reg_ralue_pack(ralue_pl, proto, |
5303 | MLXSW_REG_RALUE_OP_WRITE_WRITE, vr->id, 0); | |
b5d90e6d IS |
5304 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); |
5305 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), | |
5306 | ralue_pl); | |
5307 | if (err) | |
5308 | return err; | |
5309 | } | |
5310 | ||
5311 | return 0; | |
b45f64d1 JP |
5312 | } |
5313 | ||
d42b0965 YG |
5314 | static int mlxsw_sp_router_fibmr_add(struct mlxsw_sp *mlxsw_sp, |
5315 | struct mfc_entry_notifier_info *men_info, | |
5316 | bool replace) | |
5317 | { | |
5318 | struct mlxsw_sp_vr *vr; | |
5319 | ||
5320 | if (mlxsw_sp->router->aborted) | |
5321 | return 0; | |
5322 | ||
f8fa9b4e | 5323 | vr = mlxsw_sp_vr_get(mlxsw_sp, men_info->tb_id, NULL); |
d42b0965 YG |
5324 | if (IS_ERR(vr)) |
5325 | return PTR_ERR(vr); | |
5326 | ||
5327 | return mlxsw_sp_mr_route4_add(vr->mr4_table, men_info->mfc, replace); | |
5328 | } | |
5329 | ||
5330 | static void mlxsw_sp_router_fibmr_del(struct mlxsw_sp *mlxsw_sp, | |
5331 | struct mfc_entry_notifier_info *men_info) | |
5332 | { | |
5333 | struct mlxsw_sp_vr *vr; | |
5334 | ||
5335 | if (mlxsw_sp->router->aborted) | |
5336 | return; | |
5337 | ||
5338 | vr = mlxsw_sp_vr_find(mlxsw_sp, men_info->tb_id); | |
5339 | if (WARN_ON(!vr)) | |
5340 | return; | |
5341 | ||
5342 | mlxsw_sp_mr_route4_del(vr->mr4_table, men_info->mfc); | |
5343 | mlxsw_sp_vr_put(vr); | |
5344 | } | |
5345 | ||
5346 | static int | |
5347 | mlxsw_sp_router_fibmr_vif_add(struct mlxsw_sp *mlxsw_sp, | |
5348 | struct vif_entry_notifier_info *ven_info) | |
5349 | { | |
5350 | struct mlxsw_sp_rif *rif; | |
5351 | struct mlxsw_sp_vr *vr; | |
5352 | ||
5353 | if (mlxsw_sp->router->aborted) | |
5354 | return 0; | |
5355 | ||
f8fa9b4e | 5356 | vr = mlxsw_sp_vr_get(mlxsw_sp, ven_info->tb_id, NULL); |
d42b0965 YG |
5357 | if (IS_ERR(vr)) |
5358 | return PTR_ERR(vr); | |
5359 | ||
5360 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, ven_info->dev); | |
5361 | return mlxsw_sp_mr_vif_add(vr->mr4_table, ven_info->dev, | |
5362 | ven_info->vif_index, | |
5363 | ven_info->vif_flags, rif); | |
5364 | } | |
5365 | ||
5366 | static void | |
5367 | mlxsw_sp_router_fibmr_vif_del(struct mlxsw_sp *mlxsw_sp, | |
5368 | struct vif_entry_notifier_info *ven_info) | |
5369 | { | |
5370 | struct mlxsw_sp_vr *vr; | |
5371 | ||
5372 | if (mlxsw_sp->router->aborted) | |
5373 | return; | |
5374 | ||
5375 | vr = mlxsw_sp_vr_find(mlxsw_sp, ven_info->tb_id); | |
5376 | if (WARN_ON(!vr)) | |
5377 | return; | |
5378 | ||
5379 | mlxsw_sp_mr_vif_del(vr->mr4_table, ven_info->vif_index); | |
5380 | mlxsw_sp_vr_put(vr); | |
5381 | } | |
5382 | ||
bc65a8a4 IS |
5383 | static int mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp) |
5384 | { | |
5385 | enum mlxsw_reg_ralxx_protocol proto = MLXSW_REG_RALXX_PROTOCOL_IPV4; | |
5386 | int err; | |
5387 | ||
5388 | err = __mlxsw_sp_router_set_abort_trap(mlxsw_sp, proto, | |
5389 | MLXSW_SP_LPM_TREE_MIN); | |
5390 | if (err) | |
5391 | return err; | |
5392 | ||
d42b0965 YG |
5393 | /* The multicast router code does not need an abort trap as by default, |
5394 | * packets that don't match any routes are trapped to the CPU. | |
5395 | */ | |
5396 | ||
bc65a8a4 IS |
5397 | proto = MLXSW_REG_RALXX_PROTOCOL_IPV6; |
5398 | return __mlxsw_sp_router_set_abort_trap(mlxsw_sp, proto, | |
5399 | MLXSW_SP_LPM_TREE_MIN + 1); | |
5400 | } | |
5401 | ||
9aecce1c IS |
5402 | static void mlxsw_sp_fib4_node_flush(struct mlxsw_sp *mlxsw_sp, |
5403 | struct mlxsw_sp_fib_node *fib_node) | |
5404 | { | |
4f1c7f1f | 5405 | struct mlxsw_sp_fib4_entry *fib4_entry, *tmp; |
9aecce1c | 5406 | |
4f1c7f1f IS |
5407 | list_for_each_entry_safe(fib4_entry, tmp, &fib_node->entry_list, |
5408 | common.list) { | |
5409 | bool do_break = &tmp->common.list == &fib_node->entry_list; | |
9aecce1c | 5410 | |
4f1c7f1f IS |
5411 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib4_entry); |
5412 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); | |
731ea1ca | 5413 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); |
9aecce1c IS |
5414 | /* Break when entry list is empty and node was freed. |
5415 | * Otherwise, we'll access freed memory in the next | |
5416 | * iteration. | |
5417 | */ | |
5418 | if (do_break) | |
5419 | break; | |
5420 | } | |
5421 | } | |
5422 | ||
428b851f IS |
5423 | static void mlxsw_sp_fib6_node_flush(struct mlxsw_sp *mlxsw_sp, |
5424 | struct mlxsw_sp_fib_node *fib_node) | |
5425 | { | |
5426 | struct mlxsw_sp_fib6_entry *fib6_entry, *tmp; | |
5427 | ||
5428 | list_for_each_entry_safe(fib6_entry, tmp, &fib_node->entry_list, | |
5429 | common.list) { | |
5430 | bool do_break = &tmp->common.list == &fib_node->entry_list; | |
5431 | ||
5432 | mlxsw_sp_fib6_node_entry_unlink(mlxsw_sp, fib6_entry); | |
5433 | mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); | |
5434 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); | |
5435 | if (do_break) | |
5436 | break; | |
5437 | } | |
5438 | } | |
5439 | ||
9aecce1c IS |
5440 | static void mlxsw_sp_fib_node_flush(struct mlxsw_sp *mlxsw_sp, |
5441 | struct mlxsw_sp_fib_node *fib_node) | |
5442 | { | |
76610ebb | 5443 | switch (fib_node->fib->proto) { |
9aecce1c IS |
5444 | case MLXSW_SP_L3_PROTO_IPV4: |
5445 | mlxsw_sp_fib4_node_flush(mlxsw_sp, fib_node); | |
5446 | break; | |
5447 | case MLXSW_SP_L3_PROTO_IPV6: | |
428b851f | 5448 | mlxsw_sp_fib6_node_flush(mlxsw_sp, fib_node); |
9aecce1c IS |
5449 | break; |
5450 | } | |
5451 | } | |
5452 | ||
76610ebb IS |
5453 | static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp, |
5454 | struct mlxsw_sp_vr *vr, | |
5455 | enum mlxsw_sp_l3proto proto) | |
b45f64d1 | 5456 | { |
76610ebb | 5457 | struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); |
9aecce1c | 5458 | struct mlxsw_sp_fib_node *fib_node, *tmp; |
76610ebb IS |
5459 | |
5460 | list_for_each_entry_safe(fib_node, tmp, &fib->node_list, list) { | |
5461 | bool do_break = &tmp->list == &fib->node_list; | |
5462 | ||
5463 | mlxsw_sp_fib_node_flush(mlxsw_sp, fib_node); | |
5464 | if (do_break) | |
5465 | break; | |
5466 | } | |
5467 | } | |
5468 | ||
5469 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp) | |
5470 | { | |
b45f64d1 | 5471 | int i; |
b45f64d1 | 5472 | |
c1a38311 | 5473 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 5474 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; |
ac571de9 | 5475 | |
76610ebb | 5476 | if (!mlxsw_sp_vr_is_used(vr)) |
b45f64d1 | 5477 | continue; |
d42b0965 YG |
5478 | |
5479 | mlxsw_sp_mr_table_flush(vr->mr4_table); | |
76610ebb | 5480 | mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4); |
a3d9bc50 IS |
5481 | |
5482 | /* If virtual router was only used for IPv4, then it's no | |
5483 | * longer used. | |
5484 | */ | |
5485 | if (!mlxsw_sp_vr_is_used(vr)) | |
5486 | continue; | |
5487 | mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV6); | |
b45f64d1 | 5488 | } |
ac571de9 IS |
5489 | } |
5490 | ||
bc65a8a4 | 5491 | static void mlxsw_sp_router_fib_abort(struct mlxsw_sp *mlxsw_sp) |
ac571de9 IS |
5492 | { |
5493 | int err; | |
5494 | ||
9011b677 | 5495 | if (mlxsw_sp->router->aborted) |
d331d303 IS |
5496 | return; |
5497 | dev_warn(mlxsw_sp->bus_info->dev, "FIB abort triggered. Note that FIB entries are no longer being offloaded to this device.\n"); | |
ac571de9 | 5498 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
9011b677 | 5499 | mlxsw_sp->router->aborted = true; |
b45f64d1 JP |
5500 | err = mlxsw_sp_router_set_abort_trap(mlxsw_sp); |
5501 | if (err) | |
5502 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set abort trap.\n"); | |
5503 | } | |
5504 | ||
3057224e | 5505 | struct mlxsw_sp_fib_event_work { |
a0e4761d | 5506 | struct work_struct work; |
ad178c8e | 5507 | union { |
428b851f | 5508 | struct fib6_entry_notifier_info fen6_info; |
ad178c8e | 5509 | struct fib_entry_notifier_info fen_info; |
5d7bfd14 | 5510 | struct fib_rule_notifier_info fr_info; |
ad178c8e | 5511 | struct fib_nh_notifier_info fnh_info; |
d42b0965 YG |
5512 | struct mfc_entry_notifier_info men_info; |
5513 | struct vif_entry_notifier_info ven_info; | |
ad178c8e | 5514 | }; |
3057224e IS |
5515 | struct mlxsw_sp *mlxsw_sp; |
5516 | unsigned long event; | |
5517 | }; | |
5518 | ||
66a5763a | 5519 | static void mlxsw_sp_router_fib4_event_work(struct work_struct *work) |
b45f64d1 | 5520 | { |
3057224e | 5521 | struct mlxsw_sp_fib_event_work *fib_work = |
a0e4761d | 5522 | container_of(work, struct mlxsw_sp_fib_event_work, work); |
3057224e | 5523 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; |
599cf8f9 | 5524 | bool replace, append; |
b45f64d1 JP |
5525 | int err; |
5526 | ||
3057224e IS |
5527 | /* Protect internal structures from changes */ |
5528 | rtnl_lock(); | |
5529 | switch (fib_work->event) { | |
599cf8f9 | 5530 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 5531 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
b45f64d1 | 5532 | case FIB_EVENT_ENTRY_ADD: |
599cf8f9 | 5533 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; |
4283bce5 IS |
5534 | append = fib_work->event == FIB_EVENT_ENTRY_APPEND; |
5535 | err = mlxsw_sp_router_fib4_add(mlxsw_sp, &fib_work->fen_info, | |
599cf8f9 | 5536 | replace, append); |
b45f64d1 | 5537 | if (err) |
bc65a8a4 | 5538 | mlxsw_sp_router_fib_abort(mlxsw_sp); |
3057224e | 5539 | fib_info_put(fib_work->fen_info.fi); |
b45f64d1 JP |
5540 | break; |
5541 | case FIB_EVENT_ENTRY_DEL: | |
3057224e IS |
5542 | mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info); |
5543 | fib_info_put(fib_work->fen_info.fi); | |
b45f64d1 | 5544 | break; |
1f279233 DA |
5545 | case FIB_EVENT_RULE_ADD: |
5546 | /* if we get here, a rule was added that we do not support. | |
5547 | * just do the fib_abort | |
5548 | */ | |
5549 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
b45f64d1 | 5550 | break; |
ad178c8e IS |
5551 | case FIB_EVENT_NH_ADD: /* fall through */ |
5552 | case FIB_EVENT_NH_DEL: | |
0e6ea2a4 IS |
5553 | mlxsw_sp_nexthop4_event(mlxsw_sp, fib_work->event, |
5554 | fib_work->fnh_info.fib_nh); | |
ad178c8e IS |
5555 | fib_info_put(fib_work->fnh_info.fib_nh->nh_parent); |
5556 | break; | |
b45f64d1 | 5557 | } |
3057224e IS |
5558 | rtnl_unlock(); |
5559 | kfree(fib_work); | |
5560 | } | |
5561 | ||
66a5763a IS |
5562 | static void mlxsw_sp_router_fib6_event_work(struct work_struct *work) |
5563 | { | |
583419fd IS |
5564 | struct mlxsw_sp_fib_event_work *fib_work = |
5565 | container_of(work, struct mlxsw_sp_fib_event_work, work); | |
5566 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; | |
0a7fd1ac | 5567 | bool replace; |
428b851f | 5568 | int err; |
583419fd IS |
5569 | |
5570 | rtnl_lock(); | |
5571 | switch (fib_work->event) { | |
0a7fd1ac | 5572 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
428b851f | 5573 | case FIB_EVENT_ENTRY_ADD: |
0a7fd1ac | 5574 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; |
428b851f | 5575 | err = mlxsw_sp_router_fib6_add(mlxsw_sp, |
0a7fd1ac | 5576 | fib_work->fen6_info.rt, replace); |
428b851f IS |
5577 | if (err) |
5578 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
5579 | mlxsw_sp_rt6_release(fib_work->fen6_info.rt); | |
5580 | break; | |
5581 | case FIB_EVENT_ENTRY_DEL: | |
5582 | mlxsw_sp_router_fib6_del(mlxsw_sp, fib_work->fen6_info.rt); | |
5583 | mlxsw_sp_rt6_release(fib_work->fen6_info.rt); | |
5584 | break; | |
1f279233 DA |
5585 | case FIB_EVENT_RULE_ADD: |
5586 | /* if we get here, a rule was added that we do not support. | |
5587 | * just do the fib_abort | |
5588 | */ | |
5589 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
583419fd IS |
5590 | break; |
5591 | } | |
5592 | rtnl_unlock(); | |
5593 | kfree(fib_work); | |
66a5763a IS |
5594 | } |
5595 | ||
d42b0965 YG |
5596 | static void mlxsw_sp_router_fibmr_event_work(struct work_struct *work) |
5597 | { | |
5598 | struct mlxsw_sp_fib_event_work *fib_work = | |
5599 | container_of(work, struct mlxsw_sp_fib_event_work, work); | |
5600 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; | |
d42b0965 YG |
5601 | bool replace; |
5602 | int err; | |
5603 | ||
5604 | rtnl_lock(); | |
5605 | switch (fib_work->event) { | |
5606 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ | |
5607 | case FIB_EVENT_ENTRY_ADD: | |
5608 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; | |
5609 | ||
5610 | err = mlxsw_sp_router_fibmr_add(mlxsw_sp, &fib_work->men_info, | |
5611 | replace); | |
5612 | if (err) | |
5613 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
5614 | ipmr_cache_put(fib_work->men_info.mfc); | |
5615 | break; | |
5616 | case FIB_EVENT_ENTRY_DEL: | |
5617 | mlxsw_sp_router_fibmr_del(mlxsw_sp, &fib_work->men_info); | |
5618 | ipmr_cache_put(fib_work->men_info.mfc); | |
5619 | break; | |
5620 | case FIB_EVENT_VIF_ADD: | |
5621 | err = mlxsw_sp_router_fibmr_vif_add(mlxsw_sp, | |
5622 | &fib_work->ven_info); | |
5623 | if (err) | |
5624 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
5625 | dev_put(fib_work->ven_info.dev); | |
5626 | break; | |
5627 | case FIB_EVENT_VIF_DEL: | |
5628 | mlxsw_sp_router_fibmr_vif_del(mlxsw_sp, | |
5629 | &fib_work->ven_info); | |
5630 | dev_put(fib_work->ven_info.dev); | |
5631 | break; | |
1f279233 DA |
5632 | case FIB_EVENT_RULE_ADD: |
5633 | /* if we get here, a rule was added that we do not support. | |
5634 | * just do the fib_abort | |
5635 | */ | |
5636 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
d42b0965 YG |
5637 | break; |
5638 | } | |
5639 | rtnl_unlock(); | |
5640 | kfree(fib_work); | |
5641 | } | |
5642 | ||
66a5763a IS |
5643 | static void mlxsw_sp_router_fib4_event(struct mlxsw_sp_fib_event_work *fib_work, |
5644 | struct fib_notifier_info *info) | |
5645 | { | |
3c75f9b1 | 5646 | struct fib_entry_notifier_info *fen_info; |
3c75f9b1 DA |
5647 | struct fib_nh_notifier_info *fnh_info; |
5648 | ||
66a5763a IS |
5649 | switch (fib_work->event) { |
5650 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ | |
5651 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ | |
5652 | case FIB_EVENT_ENTRY_ADD: /* fall through */ | |
5653 | case FIB_EVENT_ENTRY_DEL: | |
3c75f9b1 DA |
5654 | fen_info = container_of(info, struct fib_entry_notifier_info, |
5655 | info); | |
5656 | fib_work->fen_info = *fen_info; | |
5657 | /* Take reference on fib_info to prevent it from being | |
66a5763a IS |
5658 | * freed while work is queued. Release it afterwards. |
5659 | */ | |
5660 | fib_info_hold(fib_work->fen_info.fi); | |
5661 | break; | |
66a5763a IS |
5662 | case FIB_EVENT_NH_ADD: /* fall through */ |
5663 | case FIB_EVENT_NH_DEL: | |
3c75f9b1 DA |
5664 | fnh_info = container_of(info, struct fib_nh_notifier_info, |
5665 | info); | |
5666 | fib_work->fnh_info = *fnh_info; | |
66a5763a IS |
5667 | fib_info_hold(fib_work->fnh_info.fib_nh->nh_parent); |
5668 | break; | |
5669 | } | |
5670 | } | |
5671 | ||
5672 | static void mlxsw_sp_router_fib6_event(struct mlxsw_sp_fib_event_work *fib_work, | |
5673 | struct fib_notifier_info *info) | |
5674 | { | |
3c75f9b1 | 5675 | struct fib6_entry_notifier_info *fen6_info; |
3c75f9b1 | 5676 | |
583419fd | 5677 | switch (fib_work->event) { |
0a7fd1ac | 5678 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
428b851f IS |
5679 | case FIB_EVENT_ENTRY_ADD: /* fall through */ |
5680 | case FIB_EVENT_ENTRY_DEL: | |
3c75f9b1 DA |
5681 | fen6_info = container_of(info, struct fib6_entry_notifier_info, |
5682 | info); | |
5683 | fib_work->fen6_info = *fen6_info; | |
428b851f IS |
5684 | rt6_hold(fib_work->fen6_info.rt); |
5685 | break; | |
583419fd | 5686 | } |
66a5763a IS |
5687 | } |
5688 | ||
d42b0965 YG |
5689 | static void |
5690 | mlxsw_sp_router_fibmr_event(struct mlxsw_sp_fib_event_work *fib_work, | |
5691 | struct fib_notifier_info *info) | |
5692 | { | |
5693 | switch (fib_work->event) { | |
5694 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ | |
5695 | case FIB_EVENT_ENTRY_ADD: /* fall through */ | |
5696 | case FIB_EVENT_ENTRY_DEL: | |
5697 | memcpy(&fib_work->men_info, info, sizeof(fib_work->men_info)); | |
5698 | ipmr_cache_hold(fib_work->men_info.mfc); | |
5699 | break; | |
5700 | case FIB_EVENT_VIF_ADD: /* fall through */ | |
5701 | case FIB_EVENT_VIF_DEL: | |
5702 | memcpy(&fib_work->ven_info, info, sizeof(fib_work->ven_info)); | |
5703 | dev_hold(fib_work->ven_info.dev); | |
5704 | break; | |
1f279233 DA |
5705 | } |
5706 | } | |
5707 | ||
5708 | static int mlxsw_sp_router_fib_rule_event(unsigned long event, | |
5709 | struct fib_notifier_info *info, | |
5710 | struct mlxsw_sp *mlxsw_sp) | |
5711 | { | |
5712 | struct netlink_ext_ack *extack = info->extack; | |
5713 | struct fib_rule_notifier_info *fr_info; | |
5714 | struct fib_rule *rule; | |
5715 | int err = 0; | |
5716 | ||
5717 | /* nothing to do at the moment */ | |
5718 | if (event == FIB_EVENT_RULE_DEL) | |
5719 | return 0; | |
5720 | ||
5721 | if (mlxsw_sp->router->aborted) | |
5722 | return 0; | |
5723 | ||
5724 | fr_info = container_of(info, struct fib_rule_notifier_info, info); | |
5725 | rule = fr_info->rule; | |
5726 | ||
5727 | switch (info->family) { | |
5728 | case AF_INET: | |
5729 | if (!fib4_rule_default(rule) && !rule->l3mdev) | |
5730 | err = -1; | |
5731 | break; | |
5732 | case AF_INET6: | |
5733 | if (!fib6_rule_default(rule) && !rule->l3mdev) | |
5734 | err = -1; | |
5735 | break; | |
5736 | case RTNL_FAMILY_IPMR: | |
5737 | if (!ipmr_rule_default(rule) && !rule->l3mdev) | |
5738 | err = -1; | |
d42b0965 YG |
5739 | break; |
5740 | } | |
1f279233 DA |
5741 | |
5742 | if (err < 0) | |
5743 | NL_SET_ERR_MSG(extack, "spectrum: FIB rules not supported. Aborting offload"); | |
5744 | ||
5745 | return err; | |
d42b0965 YG |
5746 | } |
5747 | ||
3057224e IS |
5748 | /* Called with rcu_read_lock() */ |
5749 | static int mlxsw_sp_router_fib_event(struct notifier_block *nb, | |
5750 | unsigned long event, void *ptr) | |
5751 | { | |
3057224e IS |
5752 | struct mlxsw_sp_fib_event_work *fib_work; |
5753 | struct fib_notifier_info *info = ptr; | |
7e39d115 | 5754 | struct mlxsw_sp_router *router; |
1f279233 | 5755 | int err; |
3057224e | 5756 | |
8e29f979 | 5757 | if (!net_eq(info->net, &init_net) || |
664375e9 YG |
5758 | (info->family != AF_INET && info->family != AF_INET6 && |
5759 | info->family != RTNL_FAMILY_IPMR)) | |
3057224e IS |
5760 | return NOTIFY_DONE; |
5761 | ||
1f279233 DA |
5762 | router = container_of(nb, struct mlxsw_sp_router, fib_nb); |
5763 | ||
5764 | switch (event) { | |
5765 | case FIB_EVENT_RULE_ADD: /* fall through */ | |
5766 | case FIB_EVENT_RULE_DEL: | |
5767 | err = mlxsw_sp_router_fib_rule_event(event, info, | |
5768 | router->mlxsw_sp); | |
5769 | if (!err) | |
5770 | return NOTIFY_DONE; | |
5771 | } | |
5772 | ||
3057224e IS |
5773 | fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC); |
5774 | if (WARN_ON(!fib_work)) | |
5775 | return NOTIFY_BAD; | |
5776 | ||
7e39d115 | 5777 | fib_work->mlxsw_sp = router->mlxsw_sp; |
3057224e IS |
5778 | fib_work->event = event; |
5779 | ||
66a5763a IS |
5780 | switch (info->family) { |
5781 | case AF_INET: | |
5782 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fib4_event_work); | |
5783 | mlxsw_sp_router_fib4_event(fib_work, info); | |
3057224e | 5784 | break; |
66a5763a IS |
5785 | case AF_INET6: |
5786 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fib6_event_work); | |
5787 | mlxsw_sp_router_fib6_event(fib_work, info); | |
ad178c8e | 5788 | break; |
d42b0965 YG |
5789 | case RTNL_FAMILY_IPMR: |
5790 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fibmr_event_work); | |
5791 | mlxsw_sp_router_fibmr_event(fib_work, info); | |
5792 | break; | |
3057224e IS |
5793 | } |
5794 | ||
a0e4761d | 5795 | mlxsw_core_schedule_work(&fib_work->work); |
3057224e | 5796 | |
b45f64d1 JP |
5797 | return NOTIFY_DONE; |
5798 | } | |
5799 | ||
4724ba56 IS |
5800 | static struct mlxsw_sp_rif * |
5801 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
5802 | const struct net_device *dev) | |
5803 | { | |
5804 | int i; | |
5805 | ||
5806 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
5f9efffb IS |
5807 | if (mlxsw_sp->router->rifs[i] && |
5808 | mlxsw_sp->router->rifs[i]->dev == dev) | |
5809 | return mlxsw_sp->router->rifs[i]; | |
4724ba56 IS |
5810 | |
5811 | return NULL; | |
5812 | } | |
5813 | ||
5814 | static int mlxsw_sp_router_rif_disable(struct mlxsw_sp *mlxsw_sp, u16 rif) | |
5815 | { | |
5816 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
5817 | int err; | |
5818 | ||
5819 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif); | |
5820 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
5821 | if (WARN_ON_ONCE(err)) | |
5822 | return err; | |
5823 | ||
5824 | mlxsw_reg_ritr_enable_set(ritr_pl, false); | |
5825 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
5826 | } | |
5827 | ||
5828 | static void mlxsw_sp_router_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
bf95233e | 5829 | struct mlxsw_sp_rif *rif) |
4724ba56 | 5830 | { |
bf95233e AS |
5831 | mlxsw_sp_router_rif_disable(mlxsw_sp, rif->rif_index); |
5832 | mlxsw_sp_nexthop_rif_gone_sync(mlxsw_sp, rif); | |
5833 | mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, rif); | |
4724ba56 IS |
5834 | } |
5835 | ||
5ea1237f AS |
5836 | static bool |
5837 | mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *rif, struct net_device *dev, | |
5838 | unsigned long event) | |
4724ba56 | 5839 | { |
5ea1237f AS |
5840 | struct inet6_dev *inet6_dev; |
5841 | bool addr_list_empty = true; | |
5842 | struct in_device *idev; | |
5843 | ||
4724ba56 IS |
5844 | switch (event) { |
5845 | case NETDEV_UP: | |
f1b1f273 | 5846 | return rif == NULL; |
4724ba56 | 5847 | case NETDEV_DOWN: |
5ea1237f AS |
5848 | idev = __in_dev_get_rtnl(dev); |
5849 | if (idev && idev->ifa_list) | |
5850 | addr_list_empty = false; | |
5851 | ||
5852 | inet6_dev = __in6_dev_get(dev); | |
5853 | if (addr_list_empty && inet6_dev && | |
5854 | !list_empty(&inet6_dev->addr_list)) | |
5855 | addr_list_empty = false; | |
5856 | ||
5857 | if (rif && addr_list_empty && | |
bf95233e | 5858 | !netif_is_l3_slave(rif->dev)) |
4724ba56 IS |
5859 | return true; |
5860 | /* It is possible we already removed the RIF ourselves | |
5861 | * if it was assigned to a netdev that is now a bridge | |
5862 | * or LAG slave. | |
5863 | */ | |
5864 | return false; | |
5865 | } | |
5866 | ||
5867 | return false; | |
5868 | } | |
5869 | ||
e4f3c1c1 IS |
5870 | static enum mlxsw_sp_rif_type |
5871 | mlxsw_sp_dev_rif_type(const struct mlxsw_sp *mlxsw_sp, | |
5872 | const struct net_device *dev) | |
5873 | { | |
5874 | enum mlxsw_sp_fid_type type; | |
5875 | ||
6ddb7426 PM |
5876 | if (mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, NULL)) |
5877 | return MLXSW_SP_RIF_TYPE_IPIP_LB; | |
5878 | ||
5879 | /* Otherwise RIF type is derived from the type of the underlying FID. */ | |
e4f3c1c1 IS |
5880 | if (is_vlan_dev(dev) && netif_is_bridge_master(vlan_dev_real_dev(dev))) |
5881 | type = MLXSW_SP_FID_TYPE_8021Q; | |
5882 | else if (netif_is_bridge_master(dev) && br_vlan_enabled(dev)) | |
5883 | type = MLXSW_SP_FID_TYPE_8021Q; | |
5884 | else if (netif_is_bridge_master(dev)) | |
5885 | type = MLXSW_SP_FID_TYPE_8021D; | |
5886 | else | |
5887 | type = MLXSW_SP_FID_TYPE_RFID; | |
5888 | ||
5889 | return mlxsw_sp_fid_type_rif_type(mlxsw_sp, type); | |
5890 | } | |
5891 | ||
de5ed99e | 5892 | static int mlxsw_sp_rif_index_alloc(struct mlxsw_sp *mlxsw_sp, u16 *p_rif_index) |
4724ba56 IS |
5893 | { |
5894 | int i; | |
5895 | ||
de5ed99e IS |
5896 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) { |
5897 | if (!mlxsw_sp->router->rifs[i]) { | |
5898 | *p_rif_index = i; | |
5899 | return 0; | |
5900 | } | |
5901 | } | |
4724ba56 | 5902 | |
de5ed99e | 5903 | return -ENOBUFS; |
4724ba56 IS |
5904 | } |
5905 | ||
e4f3c1c1 IS |
5906 | static struct mlxsw_sp_rif *mlxsw_sp_rif_alloc(size_t rif_size, u16 rif_index, |
5907 | u16 vr_id, | |
5908 | struct net_device *l3_dev) | |
4724ba56 | 5909 | { |
bf95233e | 5910 | struct mlxsw_sp_rif *rif; |
4724ba56 | 5911 | |
e4f3c1c1 | 5912 | rif = kzalloc(rif_size, GFP_KERNEL); |
bf95233e | 5913 | if (!rif) |
4724ba56 IS |
5914 | return NULL; |
5915 | ||
bf95233e AS |
5916 | INIT_LIST_HEAD(&rif->nexthop_list); |
5917 | INIT_LIST_HEAD(&rif->neigh_list); | |
5918 | ether_addr_copy(rif->addr, l3_dev->dev_addr); | |
5919 | rif->mtu = l3_dev->mtu; | |
5920 | rif->vr_id = vr_id; | |
5921 | rif->dev = l3_dev; | |
5922 | rif->rif_index = rif_index; | |
4724ba56 | 5923 | |
bf95233e | 5924 | return rif; |
4724ba56 IS |
5925 | } |
5926 | ||
5f9efffb IS |
5927 | struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp, |
5928 | u16 rif_index) | |
5929 | { | |
5930 | return mlxsw_sp->router->rifs[rif_index]; | |
5931 | } | |
5932 | ||
fd1b9d41 AS |
5933 | u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif) |
5934 | { | |
5935 | return rif->rif_index; | |
5936 | } | |
5937 | ||
92107cfb PM |
5938 | u16 mlxsw_sp_ipip_lb_rif_index(const struct mlxsw_sp_rif_ipip_lb *lb_rif) |
5939 | { | |
5940 | return lb_rif->common.rif_index; | |
5941 | } | |
5942 | ||
5943 | u16 mlxsw_sp_ipip_lb_ul_vr_id(const struct mlxsw_sp_rif_ipip_lb *lb_rif) | |
5944 | { | |
5945 | return lb_rif->ul_vr_id; | |
5946 | } | |
5947 | ||
fd1b9d41 AS |
5948 | int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif) |
5949 | { | |
5950 | return rif->dev->ifindex; | |
5951 | } | |
5952 | ||
91e4d59a YG |
5953 | const struct net_device *mlxsw_sp_rif_dev(const struct mlxsw_sp_rif *rif) |
5954 | { | |
5955 | return rif->dev; | |
5956 | } | |
5957 | ||
4724ba56 | 5958 | static struct mlxsw_sp_rif * |
e4f3c1c1 | 5959 | mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp, |
f8fa9b4e DA |
5960 | const struct mlxsw_sp_rif_params *params, |
5961 | struct netlink_ext_ack *extack) | |
4724ba56 | 5962 | { |
e4f3c1c1 IS |
5963 | u32 tb_id = l3mdev_fib_table(params->dev); |
5964 | const struct mlxsw_sp_rif_ops *ops; | |
010cadf9 | 5965 | struct mlxsw_sp_fid *fid = NULL; |
e4f3c1c1 | 5966 | enum mlxsw_sp_rif_type type; |
bf95233e | 5967 | struct mlxsw_sp_rif *rif; |
a1107487 IS |
5968 | struct mlxsw_sp_vr *vr; |
5969 | u16 rif_index; | |
4724ba56 IS |
5970 | int err; |
5971 | ||
e4f3c1c1 IS |
5972 | type = mlxsw_sp_dev_rif_type(mlxsw_sp, params->dev); |
5973 | ops = mlxsw_sp->router->rif_ops_arr[type]; | |
5974 | ||
f8fa9b4e | 5975 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN, extack); |
c9ec53f0 IS |
5976 | if (IS_ERR(vr)) |
5977 | return ERR_CAST(vr); | |
28a04c7b | 5978 | vr->rif_count++; |
c9ec53f0 | 5979 | |
de5ed99e | 5980 | err = mlxsw_sp_rif_index_alloc(mlxsw_sp, &rif_index); |
f8fa9b4e DA |
5981 | if (err) { |
5982 | NL_SET_ERR_MSG(extack, "spectrum: Exceeded number of supported router interfaces"); | |
de5ed99e | 5983 | goto err_rif_index_alloc; |
f8fa9b4e | 5984 | } |
4724ba56 | 5985 | |
e4f3c1c1 | 5986 | rif = mlxsw_sp_rif_alloc(ops->rif_size, rif_index, vr->id, params->dev); |
a13a594d IS |
5987 | if (!rif) { |
5988 | err = -ENOMEM; | |
5989 | goto err_rif_alloc; | |
5990 | } | |
e4f3c1c1 IS |
5991 | rif->mlxsw_sp = mlxsw_sp; |
5992 | rif->ops = ops; | |
a13a594d | 5993 | |
010cadf9 PM |
5994 | if (ops->fid_get) { |
5995 | fid = ops->fid_get(rif); | |
5996 | if (IS_ERR(fid)) { | |
5997 | err = PTR_ERR(fid); | |
5998 | goto err_fid_get; | |
5999 | } | |
6000 | rif->fid = fid; | |
4d93ceeb IS |
6001 | } |
6002 | ||
e4f3c1c1 IS |
6003 | if (ops->setup) |
6004 | ops->setup(rif, params); | |
6005 | ||
6006 | err = ops->configure(rif); | |
4724ba56 | 6007 | if (err) |
e4f3c1c1 | 6008 | goto err_configure; |
4724ba56 | 6009 | |
d42b0965 YG |
6010 | err = mlxsw_sp_mr_rif_add(vr->mr4_table, rif); |
6011 | if (err) | |
6012 | goto err_mr_rif_add; | |
6013 | ||
e4f3c1c1 | 6014 | mlxsw_sp_rif_counters_alloc(rif); |
5f9efffb | 6015 | mlxsw_sp->router->rifs[rif_index] = rif; |
4724ba56 | 6016 | |
bf95233e | 6017 | return rif; |
4724ba56 | 6018 | |
d42b0965 YG |
6019 | err_mr_rif_add: |
6020 | ops->deconfigure(rif); | |
e4f3c1c1 | 6021 | err_configure: |
010cadf9 PM |
6022 | if (fid) |
6023 | mlxsw_sp_fid_put(fid); | |
a1107487 | 6024 | err_fid_get: |
e4f3c1c1 IS |
6025 | kfree(rif); |
6026 | err_rif_alloc: | |
de5ed99e | 6027 | err_rif_index_alloc: |
28a04c7b | 6028 | vr->rif_count--; |
c9ec53f0 | 6029 | mlxsw_sp_vr_put(vr); |
4724ba56 IS |
6030 | return ERR_PTR(err); |
6031 | } | |
6032 | ||
e4f3c1c1 | 6033 | void mlxsw_sp_rif_destroy(struct mlxsw_sp_rif *rif) |
4724ba56 | 6034 | { |
e4f3c1c1 IS |
6035 | const struct mlxsw_sp_rif_ops *ops = rif->ops; |
6036 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
a1107487 | 6037 | struct mlxsw_sp_fid *fid = rif->fid; |
e4f3c1c1 | 6038 | struct mlxsw_sp_vr *vr; |
4724ba56 | 6039 | |
bf95233e | 6040 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif); |
e4f3c1c1 | 6041 | vr = &mlxsw_sp->router->vrs[rif->vr_id]; |
e0c0afd8 | 6042 | |
e4f3c1c1 | 6043 | mlxsw_sp->router->rifs[rif->rif_index] = NULL; |
e4f3c1c1 | 6044 | mlxsw_sp_rif_counters_free(rif); |
d42b0965 | 6045 | mlxsw_sp_mr_rif_del(vr->mr4_table, rif); |
e4f3c1c1 | 6046 | ops->deconfigure(rif); |
010cadf9 PM |
6047 | if (fid) |
6048 | /* Loopback RIFs are not associated with a FID. */ | |
6049 | mlxsw_sp_fid_put(fid); | |
e4f3c1c1 | 6050 | kfree(rif); |
28a04c7b | 6051 | vr->rif_count--; |
c9ec53f0 | 6052 | mlxsw_sp_vr_put(vr); |
4724ba56 IS |
6053 | } |
6054 | ||
e4f3c1c1 IS |
6055 | static void |
6056 | mlxsw_sp_rif_subport_params_init(struct mlxsw_sp_rif_params *params, | |
6057 | struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) | |
6058 | { | |
6059 | struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; | |
6060 | ||
6061 | params->vid = mlxsw_sp_port_vlan->vid; | |
6062 | params->lag = mlxsw_sp_port->lagged; | |
6063 | if (params->lag) | |
6064 | params->lag_id = mlxsw_sp_port->lag_id; | |
6065 | else | |
6066 | params->system_port = mlxsw_sp_port->local_port; | |
6067 | } | |
6068 | ||
7cbecf24 | 6069 | static int |
a1107487 | 6070 | mlxsw_sp_port_vlan_router_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, |
f8fa9b4e DA |
6071 | struct net_device *l3_dev, |
6072 | struct netlink_ext_ack *extack) | |
4724ba56 | 6073 | { |
7cbecf24 | 6074 | struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; |
1b8f09a0 | 6075 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
7cbecf24 | 6076 | u16 vid = mlxsw_sp_port_vlan->vid; |
bf95233e | 6077 | struct mlxsw_sp_rif *rif; |
a1107487 | 6078 | struct mlxsw_sp_fid *fid; |
03ea01e9 | 6079 | int err; |
4724ba56 | 6080 | |
1b8f09a0 | 6081 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
bf95233e | 6082 | if (!rif) { |
e4f3c1c1 IS |
6083 | struct mlxsw_sp_rif_params params = { |
6084 | .dev = l3_dev, | |
6085 | }; | |
6086 | ||
6087 | mlxsw_sp_rif_subport_params_init(¶ms, mlxsw_sp_port_vlan); | |
f8fa9b4e | 6088 | rif = mlxsw_sp_rif_create(mlxsw_sp, ¶ms, extack); |
bf95233e AS |
6089 | if (IS_ERR(rif)) |
6090 | return PTR_ERR(rif); | |
4724ba56 IS |
6091 | } |
6092 | ||
a1107487 | 6093 | /* FID was already created, just take a reference */ |
e4f3c1c1 | 6094 | fid = rif->ops->fid_get(rif); |
a1107487 IS |
6095 | err = mlxsw_sp_fid_port_vid_map(fid, mlxsw_sp_port, vid); |
6096 | if (err) | |
6097 | goto err_fid_port_vid_map; | |
6098 | ||
7cbecf24 | 6099 | err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false); |
03ea01e9 IS |
6100 | if (err) |
6101 | goto err_port_vid_learning_set; | |
6102 | ||
7cbecf24 | 6103 | err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, |
03ea01e9 IS |
6104 | BR_STATE_FORWARDING); |
6105 | if (err) | |
6106 | goto err_port_vid_stp_set; | |
6107 | ||
a1107487 | 6108 | mlxsw_sp_port_vlan->fid = fid; |
4724ba56 | 6109 | |
4724ba56 | 6110 | return 0; |
03ea01e9 IS |
6111 | |
6112 | err_port_vid_stp_set: | |
7cbecf24 | 6113 | mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true); |
03ea01e9 | 6114 | err_port_vid_learning_set: |
a1107487 IS |
6115 | mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid); |
6116 | err_fid_port_vid_map: | |
6117 | mlxsw_sp_fid_put(fid); | |
03ea01e9 | 6118 | return err; |
4724ba56 IS |
6119 | } |
6120 | ||
a1107487 IS |
6121 | void |
6122 | mlxsw_sp_port_vlan_router_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) | |
4724ba56 | 6123 | { |
ce95e154 | 6124 | struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; |
7cbecf24 | 6125 | struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid; |
ce95e154 | 6126 | u16 vid = mlxsw_sp_port_vlan->vid; |
ce95e154 | 6127 | |
a1107487 IS |
6128 | if (WARN_ON(mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_RFID)) |
6129 | return; | |
4aafc368 | 6130 | |
a1107487 | 6131 | mlxsw_sp_port_vlan->fid = NULL; |
7cbecf24 IS |
6132 | mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_BLOCKING); |
6133 | mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true); | |
a1107487 IS |
6134 | mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid); |
6135 | /* If router port holds the last reference on the rFID, then the | |
6136 | * associated Sub-port RIF will be destroyed. | |
6137 | */ | |
6138 | mlxsw_sp_fid_put(fid); | |
4724ba56 IS |
6139 | } |
6140 | ||
7cbecf24 IS |
6141 | static int mlxsw_sp_inetaddr_port_vlan_event(struct net_device *l3_dev, |
6142 | struct net_device *port_dev, | |
f8fa9b4e DA |
6143 | unsigned long event, u16 vid, |
6144 | struct netlink_ext_ack *extack) | |
4724ba56 IS |
6145 | { |
6146 | struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev); | |
ce95e154 | 6147 | struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; |
4724ba56 | 6148 | |
ce95e154 | 6149 | mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); |
7cbecf24 IS |
6150 | if (WARN_ON(!mlxsw_sp_port_vlan)) |
6151 | return -EINVAL; | |
4724ba56 IS |
6152 | |
6153 | switch (event) { | |
6154 | case NETDEV_UP: | |
a1107487 | 6155 | return mlxsw_sp_port_vlan_router_join(mlxsw_sp_port_vlan, |
f8fa9b4e | 6156 | l3_dev, extack); |
4724ba56 | 6157 | case NETDEV_DOWN: |
a1107487 | 6158 | mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan); |
4724ba56 IS |
6159 | break; |
6160 | } | |
6161 | ||
6162 | return 0; | |
6163 | } | |
6164 | ||
6165 | static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev, | |
f8fa9b4e DA |
6166 | unsigned long event, |
6167 | struct netlink_ext_ack *extack) | |
4724ba56 | 6168 | { |
2b94e58d JP |
6169 | if (netif_is_bridge_port(port_dev) || |
6170 | netif_is_lag_port(port_dev) || | |
6171 | netif_is_ovs_port(port_dev)) | |
4724ba56 IS |
6172 | return 0; |
6173 | ||
f8fa9b4e DA |
6174 | return mlxsw_sp_inetaddr_port_vlan_event(port_dev, port_dev, event, 1, |
6175 | extack); | |
4724ba56 IS |
6176 | } |
6177 | ||
6178 | static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev, | |
6179 | struct net_device *lag_dev, | |
f8fa9b4e DA |
6180 | unsigned long event, u16 vid, |
6181 | struct netlink_ext_ack *extack) | |
4724ba56 IS |
6182 | { |
6183 | struct net_device *port_dev; | |
6184 | struct list_head *iter; | |
6185 | int err; | |
6186 | ||
6187 | netdev_for_each_lower_dev(lag_dev, port_dev, iter) { | |
6188 | if (mlxsw_sp_port_dev_check(port_dev)) { | |
7cbecf24 IS |
6189 | err = mlxsw_sp_inetaddr_port_vlan_event(l3_dev, |
6190 | port_dev, | |
f8fa9b4e DA |
6191 | event, vid, |
6192 | extack); | |
4724ba56 IS |
6193 | if (err) |
6194 | return err; | |
6195 | } | |
6196 | } | |
6197 | ||
6198 | return 0; | |
6199 | } | |
6200 | ||
6201 | static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev, | |
f8fa9b4e DA |
6202 | unsigned long event, |
6203 | struct netlink_ext_ack *extack) | |
4724ba56 IS |
6204 | { |
6205 | if (netif_is_bridge_port(lag_dev)) | |
6206 | return 0; | |
6207 | ||
f8fa9b4e DA |
6208 | return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1, |
6209 | extack); | |
4724ba56 IS |
6210 | } |
6211 | ||
4724ba56 | 6212 | static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev, |
f8fa9b4e DA |
6213 | unsigned long event, |
6214 | struct netlink_ext_ack *extack) | |
4724ba56 IS |
6215 | { |
6216 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); | |
e4f3c1c1 IS |
6217 | struct mlxsw_sp_rif_params params = { |
6218 | .dev = l3_dev, | |
6219 | }; | |
a1107487 | 6220 | struct mlxsw_sp_rif *rif; |
4724ba56 IS |
6221 | |
6222 | switch (event) { | |
6223 | case NETDEV_UP: | |
f8fa9b4e | 6224 | rif = mlxsw_sp_rif_create(mlxsw_sp, ¶ms, extack); |
e4f3c1c1 IS |
6225 | if (IS_ERR(rif)) |
6226 | return PTR_ERR(rif); | |
6227 | break; | |
4724ba56 | 6228 | case NETDEV_DOWN: |
a1107487 | 6229 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
e4f3c1c1 | 6230 | mlxsw_sp_rif_destroy(rif); |
4724ba56 IS |
6231 | break; |
6232 | } | |
6233 | ||
6234 | return 0; | |
6235 | } | |
6236 | ||
6237 | static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev, | |
f8fa9b4e DA |
6238 | unsigned long event, |
6239 | struct netlink_ext_ack *extack) | |
4724ba56 IS |
6240 | { |
6241 | struct net_device *real_dev = vlan_dev_real_dev(vlan_dev); | |
4724ba56 IS |
6242 | u16 vid = vlan_dev_vlan_id(vlan_dev); |
6243 | ||
6b27c8ad IS |
6244 | if (netif_is_bridge_port(vlan_dev)) |
6245 | return 0; | |
6246 | ||
4724ba56 | 6247 | if (mlxsw_sp_port_dev_check(real_dev)) |
7cbecf24 | 6248 | return mlxsw_sp_inetaddr_port_vlan_event(vlan_dev, real_dev, |
f8fa9b4e | 6249 | event, vid, extack); |
4724ba56 IS |
6250 | else if (netif_is_lag_master(real_dev)) |
6251 | return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event, | |
f8fa9b4e | 6252 | vid, extack); |
c57529e1 | 6253 | else if (netif_is_bridge_master(real_dev) && br_vlan_enabled(real_dev)) |
f8fa9b4e | 6254 | return mlxsw_sp_inetaddr_bridge_event(vlan_dev, event, extack); |
4724ba56 IS |
6255 | |
6256 | return 0; | |
6257 | } | |
6258 | ||
b1e45526 | 6259 | static int __mlxsw_sp_inetaddr_event(struct net_device *dev, |
f8fa9b4e DA |
6260 | unsigned long event, |
6261 | struct netlink_ext_ack *extack) | |
b1e45526 IS |
6262 | { |
6263 | if (mlxsw_sp_port_dev_check(dev)) | |
f8fa9b4e | 6264 | return mlxsw_sp_inetaddr_port_event(dev, event, extack); |
b1e45526 | 6265 | else if (netif_is_lag_master(dev)) |
f8fa9b4e | 6266 | return mlxsw_sp_inetaddr_lag_event(dev, event, extack); |
b1e45526 | 6267 | else if (netif_is_bridge_master(dev)) |
f8fa9b4e | 6268 | return mlxsw_sp_inetaddr_bridge_event(dev, event, extack); |
b1e45526 | 6269 | else if (is_vlan_dev(dev)) |
f8fa9b4e | 6270 | return mlxsw_sp_inetaddr_vlan_event(dev, event, extack); |
b1e45526 IS |
6271 | else |
6272 | return 0; | |
6273 | } | |
6274 | ||
4724ba56 IS |
6275 | int mlxsw_sp_inetaddr_event(struct notifier_block *unused, |
6276 | unsigned long event, void *ptr) | |
6277 | { | |
6278 | struct in_ifaddr *ifa = (struct in_ifaddr *) ptr; | |
6279 | struct net_device *dev = ifa->ifa_dev->dev; | |
6280 | struct mlxsw_sp *mlxsw_sp; | |
bf95233e | 6281 | struct mlxsw_sp_rif *rif; |
4724ba56 IS |
6282 | int err = 0; |
6283 | ||
89d5dd2e DA |
6284 | /* NETDEV_UP event is handled by mlxsw_sp_inetaddr_valid_event */ |
6285 | if (event == NETDEV_UP) | |
6286 | goto out; | |
6287 | ||
6288 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
6289 | if (!mlxsw_sp) | |
6290 | goto out; | |
6291 | ||
6292 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
6293 | if (!mlxsw_sp_rif_should_config(rif, dev, event)) | |
6294 | goto out; | |
6295 | ||
f8fa9b4e | 6296 | err = __mlxsw_sp_inetaddr_event(dev, event, NULL); |
89d5dd2e DA |
6297 | out: |
6298 | return notifier_from_errno(err); | |
6299 | } | |
6300 | ||
6301 | int mlxsw_sp_inetaddr_valid_event(struct notifier_block *unused, | |
6302 | unsigned long event, void *ptr) | |
6303 | { | |
6304 | struct in_validator_info *ivi = (struct in_validator_info *) ptr; | |
6305 | struct net_device *dev = ivi->ivi_dev->dev; | |
6306 | struct mlxsw_sp *mlxsw_sp; | |
6307 | struct mlxsw_sp_rif *rif; | |
6308 | int err = 0; | |
6309 | ||
4724ba56 IS |
6310 | mlxsw_sp = mlxsw_sp_lower_get(dev); |
6311 | if (!mlxsw_sp) | |
6312 | goto out; | |
6313 | ||
bf95233e | 6314 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
5ea1237f | 6315 | if (!mlxsw_sp_rif_should_config(rif, dev, event)) |
4724ba56 IS |
6316 | goto out; |
6317 | ||
f8fa9b4e | 6318 | err = __mlxsw_sp_inetaddr_event(dev, event, ivi->extack); |
4724ba56 IS |
6319 | out: |
6320 | return notifier_from_errno(err); | |
6321 | } | |
6322 | ||
5ea1237f AS |
6323 | struct mlxsw_sp_inet6addr_event_work { |
6324 | struct work_struct work; | |
6325 | struct net_device *dev; | |
6326 | unsigned long event; | |
6327 | }; | |
6328 | ||
6329 | static void mlxsw_sp_inet6addr_event_work(struct work_struct *work) | |
6330 | { | |
6331 | struct mlxsw_sp_inet6addr_event_work *inet6addr_work = | |
6332 | container_of(work, struct mlxsw_sp_inet6addr_event_work, work); | |
6333 | struct net_device *dev = inet6addr_work->dev; | |
6334 | unsigned long event = inet6addr_work->event; | |
6335 | struct mlxsw_sp *mlxsw_sp; | |
6336 | struct mlxsw_sp_rif *rif; | |
6337 | ||
6338 | rtnl_lock(); | |
6339 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
6340 | if (!mlxsw_sp) | |
6341 | goto out; | |
6342 | ||
6343 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
6344 | if (!mlxsw_sp_rif_should_config(rif, dev, event)) | |
6345 | goto out; | |
6346 | ||
f8fa9b4e | 6347 | __mlxsw_sp_inetaddr_event(dev, event, NULL); |
5ea1237f AS |
6348 | out: |
6349 | rtnl_unlock(); | |
6350 | dev_put(dev); | |
6351 | kfree(inet6addr_work); | |
6352 | } | |
6353 | ||
6354 | /* Called with rcu_read_lock() */ | |
6355 | int mlxsw_sp_inet6addr_event(struct notifier_block *unused, | |
6356 | unsigned long event, void *ptr) | |
6357 | { | |
6358 | struct inet6_ifaddr *if6 = (struct inet6_ifaddr *) ptr; | |
6359 | struct mlxsw_sp_inet6addr_event_work *inet6addr_work; | |
6360 | struct net_device *dev = if6->idev->dev; | |
6361 | ||
89d5dd2e DA |
6362 | /* NETDEV_UP event is handled by mlxsw_sp_inet6addr_valid_event */ |
6363 | if (event == NETDEV_UP) | |
6364 | return NOTIFY_DONE; | |
6365 | ||
5ea1237f AS |
6366 | if (!mlxsw_sp_port_dev_lower_find_rcu(dev)) |
6367 | return NOTIFY_DONE; | |
6368 | ||
6369 | inet6addr_work = kzalloc(sizeof(*inet6addr_work), GFP_ATOMIC); | |
6370 | if (!inet6addr_work) | |
6371 | return NOTIFY_BAD; | |
6372 | ||
6373 | INIT_WORK(&inet6addr_work->work, mlxsw_sp_inet6addr_event_work); | |
6374 | inet6addr_work->dev = dev; | |
6375 | inet6addr_work->event = event; | |
6376 | dev_hold(dev); | |
6377 | mlxsw_core_schedule_work(&inet6addr_work->work); | |
6378 | ||
6379 | return NOTIFY_DONE; | |
6380 | } | |
6381 | ||
89d5dd2e DA |
6382 | int mlxsw_sp_inet6addr_valid_event(struct notifier_block *unused, |
6383 | unsigned long event, void *ptr) | |
6384 | { | |
6385 | struct in6_validator_info *i6vi = (struct in6_validator_info *) ptr; | |
6386 | struct net_device *dev = i6vi->i6vi_dev->dev; | |
6387 | struct mlxsw_sp *mlxsw_sp; | |
6388 | struct mlxsw_sp_rif *rif; | |
6389 | int err = 0; | |
6390 | ||
6391 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
6392 | if (!mlxsw_sp) | |
6393 | goto out; | |
6394 | ||
6395 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
6396 | if (!mlxsw_sp_rif_should_config(rif, dev, event)) | |
6397 | goto out; | |
6398 | ||
f8fa9b4e | 6399 | err = __mlxsw_sp_inetaddr_event(dev, event, i6vi->extack); |
89d5dd2e DA |
6400 | out: |
6401 | return notifier_from_errno(err); | |
6402 | } | |
6403 | ||
bf95233e | 6404 | static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, |
4724ba56 IS |
6405 | const char *mac, int mtu) |
6406 | { | |
6407 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
6408 | int err; | |
6409 | ||
bf95233e | 6410 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); |
4724ba56 IS |
6411 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); |
6412 | if (err) | |
6413 | return err; | |
6414 | ||
6415 | mlxsw_reg_ritr_mtu_set(ritr_pl, mtu); | |
6416 | mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac); | |
6417 | mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE); | |
6418 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
6419 | } | |
6420 | ||
6421 | int mlxsw_sp_netdevice_router_port_event(struct net_device *dev) | |
6422 | { | |
6423 | struct mlxsw_sp *mlxsw_sp; | |
bf95233e | 6424 | struct mlxsw_sp_rif *rif; |
a1107487 | 6425 | u16 fid_index; |
4724ba56 IS |
6426 | int err; |
6427 | ||
6428 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
6429 | if (!mlxsw_sp) | |
6430 | return 0; | |
6431 | ||
bf95233e AS |
6432 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
6433 | if (!rif) | |
4724ba56 | 6434 | return 0; |
a1107487 | 6435 | fid_index = mlxsw_sp_fid_index(rif->fid); |
4724ba56 | 6436 | |
a1107487 | 6437 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, false); |
4724ba56 IS |
6438 | if (err) |
6439 | return err; | |
6440 | ||
bf95233e AS |
6441 | err = mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, dev->dev_addr, |
6442 | dev->mtu); | |
4724ba56 IS |
6443 | if (err) |
6444 | goto err_rif_edit; | |
6445 | ||
a1107487 | 6446 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, fid_index, true); |
4724ba56 IS |
6447 | if (err) |
6448 | goto err_rif_fdb_op; | |
6449 | ||
fd890fe9 YG |
6450 | if (rif->mtu != dev->mtu) { |
6451 | struct mlxsw_sp_vr *vr; | |
6452 | ||
6453 | /* The RIF is relevant only to its mr_table instance, as unlike | |
6454 | * unicast routing, in multicast routing a RIF cannot be shared | |
6455 | * between several multicast routing tables. | |
6456 | */ | |
6457 | vr = &mlxsw_sp->router->vrs[rif->vr_id]; | |
6458 | mlxsw_sp_mr_rif_mtu_update(vr->mr4_table, rif, dev->mtu); | |
6459 | } | |
6460 | ||
bf95233e AS |
6461 | ether_addr_copy(rif->addr, dev->dev_addr); |
6462 | rif->mtu = dev->mtu; | |
4724ba56 | 6463 | |
bf95233e | 6464 | netdev_dbg(dev, "Updated RIF=%d\n", rif->rif_index); |
4724ba56 IS |
6465 | |
6466 | return 0; | |
6467 | ||
6468 | err_rif_fdb_op: | |
bf95233e | 6469 | mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, rif->addr, rif->mtu); |
4724ba56 | 6470 | err_rif_edit: |
a1107487 | 6471 | mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, true); |
4724ba56 IS |
6472 | return err; |
6473 | } | |
6474 | ||
b1e45526 | 6475 | static int mlxsw_sp_port_vrf_join(struct mlxsw_sp *mlxsw_sp, |
f8fa9b4e DA |
6476 | struct net_device *l3_dev, |
6477 | struct netlink_ext_ack *extack) | |
7179eb5a | 6478 | { |
b1e45526 | 6479 | struct mlxsw_sp_rif *rif; |
7179eb5a | 6480 | |
b1e45526 IS |
6481 | /* If netdev is already associated with a RIF, then we need to |
6482 | * destroy it and create a new one with the new virtual router ID. | |
7179eb5a | 6483 | */ |
b1e45526 IS |
6484 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
6485 | if (rif) | |
f8fa9b4e | 6486 | __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN, extack); |
7179eb5a | 6487 | |
f8fa9b4e | 6488 | return __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_UP, extack); |
7179eb5a IS |
6489 | } |
6490 | ||
b1e45526 IS |
6491 | static void mlxsw_sp_port_vrf_leave(struct mlxsw_sp *mlxsw_sp, |
6492 | struct net_device *l3_dev) | |
7179eb5a | 6493 | { |
b1e45526 | 6494 | struct mlxsw_sp_rif *rif; |
7179eb5a | 6495 | |
b1e45526 IS |
6496 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
6497 | if (!rif) | |
7179eb5a | 6498 | return; |
f8fa9b4e | 6499 | __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN, NULL); |
7179eb5a IS |
6500 | } |
6501 | ||
b1e45526 IS |
6502 | int mlxsw_sp_netdevice_vrf_event(struct net_device *l3_dev, unsigned long event, |
6503 | struct netdev_notifier_changeupper_info *info) | |
3d70e458 | 6504 | { |
b1e45526 IS |
6505 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); |
6506 | int err = 0; | |
3d70e458 | 6507 | |
b1e45526 IS |
6508 | if (!mlxsw_sp) |
6509 | return 0; | |
3d70e458 | 6510 | |
b1e45526 IS |
6511 | switch (event) { |
6512 | case NETDEV_PRECHANGEUPPER: | |
6513 | return 0; | |
6514 | case NETDEV_CHANGEUPPER: | |
f8fa9b4e DA |
6515 | if (info->linking) { |
6516 | struct netlink_ext_ack *extack; | |
6517 | ||
6518 | extack = netdev_notifier_info_to_extack(&info->info); | |
6519 | err = mlxsw_sp_port_vrf_join(mlxsw_sp, l3_dev, extack); | |
6520 | } else { | |
b1e45526 | 6521 | mlxsw_sp_port_vrf_leave(mlxsw_sp, l3_dev); |
f8fa9b4e | 6522 | } |
b1e45526 IS |
6523 | break; |
6524 | } | |
3d70e458 | 6525 | |
b1e45526 | 6526 | return err; |
3d70e458 IS |
6527 | } |
6528 | ||
e4f3c1c1 IS |
6529 | static struct mlxsw_sp_rif_subport * |
6530 | mlxsw_sp_rif_subport_rif(const struct mlxsw_sp_rif *rif) | |
a1107487 | 6531 | { |
e4f3c1c1 IS |
6532 | return container_of(rif, struct mlxsw_sp_rif_subport, common); |
6533 | } | |
6534 | ||
6535 | static void mlxsw_sp_rif_subport_setup(struct mlxsw_sp_rif *rif, | |
6536 | const struct mlxsw_sp_rif_params *params) | |
6537 | { | |
6538 | struct mlxsw_sp_rif_subport *rif_subport; | |
6539 | ||
6540 | rif_subport = mlxsw_sp_rif_subport_rif(rif); | |
6541 | rif_subport->vid = params->vid; | |
6542 | rif_subport->lag = params->lag; | |
6543 | if (params->lag) | |
6544 | rif_subport->lag_id = params->lag_id; | |
a1107487 | 6545 | else |
e4f3c1c1 IS |
6546 | rif_subport->system_port = params->system_port; |
6547 | } | |
6548 | ||
6549 | static int mlxsw_sp_rif_subport_op(struct mlxsw_sp_rif *rif, bool enable) | |
6550 | { | |
6551 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6552 | struct mlxsw_sp_rif_subport *rif_subport; | |
6553 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
6554 | ||
6555 | rif_subport = mlxsw_sp_rif_subport_rif(rif); | |
6556 | mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_SP_IF, | |
9571e828 PM |
6557 | rif->rif_index, rif->vr_id, rif->dev->mtu); |
6558 | mlxsw_reg_ritr_mac_pack(ritr_pl, rif->dev->dev_addr); | |
e4f3c1c1 IS |
6559 | mlxsw_reg_ritr_sp_if_pack(ritr_pl, rif_subport->lag, |
6560 | rif_subport->lag ? rif_subport->lag_id : | |
6561 | rif_subport->system_port, | |
6562 | rif_subport->vid); | |
6563 | ||
6564 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
6565 | } | |
6566 | ||
6567 | static int mlxsw_sp_rif_subport_configure(struct mlxsw_sp_rif *rif) | |
6568 | { | |
010cadf9 PM |
6569 | int err; |
6570 | ||
6571 | err = mlxsw_sp_rif_subport_op(rif, true); | |
6572 | if (err) | |
6573 | return err; | |
6574 | ||
6575 | err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, | |
6576 | mlxsw_sp_fid_index(rif->fid), true); | |
6577 | if (err) | |
6578 | goto err_rif_fdb_op; | |
6579 | ||
6580 | mlxsw_sp_fid_rif_set(rif->fid, rif); | |
6581 | return 0; | |
6582 | ||
6583 | err_rif_fdb_op: | |
6584 | mlxsw_sp_rif_subport_op(rif, false); | |
6585 | return err; | |
a1107487 IS |
6586 | } |
6587 | ||
e4f3c1c1 IS |
6588 | static void mlxsw_sp_rif_subport_deconfigure(struct mlxsw_sp_rif *rif) |
6589 | { | |
010cadf9 PM |
6590 | struct mlxsw_sp_fid *fid = rif->fid; |
6591 | ||
6592 | mlxsw_sp_fid_rif_set(fid, NULL); | |
6593 | mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, | |
6594 | mlxsw_sp_fid_index(fid), false); | |
e4f3c1c1 IS |
6595 | mlxsw_sp_rif_subport_op(rif, false); |
6596 | } | |
6597 | ||
6598 | static struct mlxsw_sp_fid * | |
6599 | mlxsw_sp_rif_subport_fid_get(struct mlxsw_sp_rif *rif) | |
6600 | { | |
6601 | return mlxsw_sp_fid_rfid_get(rif->mlxsw_sp, rif->rif_index); | |
6602 | } | |
6603 | ||
6604 | static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_subport_ops = { | |
6605 | .type = MLXSW_SP_RIF_TYPE_SUBPORT, | |
6606 | .rif_size = sizeof(struct mlxsw_sp_rif_subport), | |
6607 | .setup = mlxsw_sp_rif_subport_setup, | |
6608 | .configure = mlxsw_sp_rif_subport_configure, | |
6609 | .deconfigure = mlxsw_sp_rif_subport_deconfigure, | |
6610 | .fid_get = mlxsw_sp_rif_subport_fid_get, | |
6611 | }; | |
6612 | ||
6613 | static int mlxsw_sp_rif_vlan_fid_op(struct mlxsw_sp_rif *rif, | |
6614 | enum mlxsw_reg_ritr_if_type type, | |
6615 | u16 vid_fid, bool enable) | |
6616 | { | |
6617 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6618 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
6619 | ||
6620 | mlxsw_reg_ritr_pack(ritr_pl, enable, type, rif->rif_index, rif->vr_id, | |
9571e828 PM |
6621 | rif->dev->mtu); |
6622 | mlxsw_reg_ritr_mac_pack(ritr_pl, rif->dev->dev_addr); | |
e4f3c1c1 IS |
6623 | mlxsw_reg_ritr_fid_set(ritr_pl, type, vid_fid); |
6624 | ||
6625 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
6626 | } | |
6627 | ||
b35750f1 | 6628 | u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp) |
e4f3c1c1 IS |
6629 | { |
6630 | return mlxsw_core_max_ports(mlxsw_sp->core) + 1; | |
6631 | } | |
6632 | ||
6633 | static int mlxsw_sp_rif_vlan_configure(struct mlxsw_sp_rif *rif) | |
6634 | { | |
6635 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6636 | u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid); | |
6637 | int err; | |
6638 | ||
6639 | err = mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, true); | |
6640 | if (err) | |
6641 | return err; | |
6642 | ||
0d284818 IS |
6643 | err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
6644 | mlxsw_sp_router_port(mlxsw_sp), true); | |
6645 | if (err) | |
6646 | goto err_fid_mc_flood_set; | |
6647 | ||
e4f3c1c1 IS |
6648 | err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, |
6649 | mlxsw_sp_router_port(mlxsw_sp), true); | |
6650 | if (err) | |
6651 | goto err_fid_bc_flood_set; | |
6652 | ||
010cadf9 PM |
6653 | err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, |
6654 | mlxsw_sp_fid_index(rif->fid), true); | |
6655 | if (err) | |
6656 | goto err_rif_fdb_op; | |
6657 | ||
6658 | mlxsw_sp_fid_rif_set(rif->fid, rif); | |
e4f3c1c1 IS |
6659 | return 0; |
6660 | ||
010cadf9 PM |
6661 | err_rif_fdb_op: |
6662 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, | |
6663 | mlxsw_sp_router_port(mlxsw_sp), false); | |
e4f3c1c1 | 6664 | err_fid_bc_flood_set: |
0d284818 IS |
6665 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
6666 | mlxsw_sp_router_port(mlxsw_sp), false); | |
6667 | err_fid_mc_flood_set: | |
e4f3c1c1 IS |
6668 | mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, false); |
6669 | return err; | |
6670 | } | |
6671 | ||
6672 | static void mlxsw_sp_rif_vlan_deconfigure(struct mlxsw_sp_rif *rif) | |
6673 | { | |
e4f3c1c1 | 6674 | u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid); |
010cadf9 PM |
6675 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; |
6676 | struct mlxsw_sp_fid *fid = rif->fid; | |
e4f3c1c1 | 6677 | |
010cadf9 PM |
6678 | mlxsw_sp_fid_rif_set(fid, NULL); |
6679 | mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, | |
6680 | mlxsw_sp_fid_index(fid), false); | |
e4f3c1c1 IS |
6681 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, |
6682 | mlxsw_sp_router_port(mlxsw_sp), false); | |
0d284818 IS |
6683 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
6684 | mlxsw_sp_router_port(mlxsw_sp), false); | |
e4f3c1c1 IS |
6685 | mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, false); |
6686 | } | |
6687 | ||
6688 | static struct mlxsw_sp_fid * | |
6689 | mlxsw_sp_rif_vlan_fid_get(struct mlxsw_sp_rif *rif) | |
6690 | { | |
6691 | u16 vid = is_vlan_dev(rif->dev) ? vlan_dev_vlan_id(rif->dev) : 1; | |
6692 | ||
6693 | return mlxsw_sp_fid_8021q_get(rif->mlxsw_sp, vid); | |
6694 | } | |
6695 | ||
6696 | static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_vlan_ops = { | |
6697 | .type = MLXSW_SP_RIF_TYPE_VLAN, | |
6698 | .rif_size = sizeof(struct mlxsw_sp_rif), | |
6699 | .configure = mlxsw_sp_rif_vlan_configure, | |
6700 | .deconfigure = mlxsw_sp_rif_vlan_deconfigure, | |
6701 | .fid_get = mlxsw_sp_rif_vlan_fid_get, | |
6702 | }; | |
6703 | ||
6704 | static int mlxsw_sp_rif_fid_configure(struct mlxsw_sp_rif *rif) | |
6705 | { | |
6706 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6707 | u16 fid_index = mlxsw_sp_fid_index(rif->fid); | |
6708 | int err; | |
6709 | ||
6710 | err = mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, | |
6711 | true); | |
6712 | if (err) | |
6713 | return err; | |
6714 | ||
0d284818 IS |
6715 | err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
6716 | mlxsw_sp_router_port(mlxsw_sp), true); | |
6717 | if (err) | |
6718 | goto err_fid_mc_flood_set; | |
6719 | ||
e4f3c1c1 IS |
6720 | err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, |
6721 | mlxsw_sp_router_port(mlxsw_sp), true); | |
6722 | if (err) | |
6723 | goto err_fid_bc_flood_set; | |
6724 | ||
010cadf9 PM |
6725 | err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, |
6726 | mlxsw_sp_fid_index(rif->fid), true); | |
6727 | if (err) | |
6728 | goto err_rif_fdb_op; | |
6729 | ||
6730 | mlxsw_sp_fid_rif_set(rif->fid, rif); | |
e4f3c1c1 IS |
6731 | return 0; |
6732 | ||
010cadf9 PM |
6733 | err_rif_fdb_op: |
6734 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, | |
6735 | mlxsw_sp_router_port(mlxsw_sp), false); | |
e4f3c1c1 | 6736 | err_fid_bc_flood_set: |
0d284818 IS |
6737 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
6738 | mlxsw_sp_router_port(mlxsw_sp), false); | |
6739 | err_fid_mc_flood_set: | |
e4f3c1c1 IS |
6740 | mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, false); |
6741 | return err; | |
6742 | } | |
6743 | ||
6744 | static void mlxsw_sp_rif_fid_deconfigure(struct mlxsw_sp_rif *rif) | |
6745 | { | |
e4f3c1c1 | 6746 | u16 fid_index = mlxsw_sp_fid_index(rif->fid); |
010cadf9 PM |
6747 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; |
6748 | struct mlxsw_sp_fid *fid = rif->fid; | |
e4f3c1c1 | 6749 | |
010cadf9 PM |
6750 | mlxsw_sp_fid_rif_set(fid, NULL); |
6751 | mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, | |
6752 | mlxsw_sp_fid_index(fid), false); | |
e4f3c1c1 IS |
6753 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, |
6754 | mlxsw_sp_router_port(mlxsw_sp), false); | |
0d284818 IS |
6755 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
6756 | mlxsw_sp_router_port(mlxsw_sp), false); | |
e4f3c1c1 IS |
6757 | mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, false); |
6758 | } | |
6759 | ||
6760 | static struct mlxsw_sp_fid * | |
6761 | mlxsw_sp_rif_fid_fid_get(struct mlxsw_sp_rif *rif) | |
6762 | { | |
6763 | return mlxsw_sp_fid_8021d_get(rif->mlxsw_sp, rif->dev->ifindex); | |
6764 | } | |
6765 | ||
6766 | static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_fid_ops = { | |
6767 | .type = MLXSW_SP_RIF_TYPE_FID, | |
6768 | .rif_size = sizeof(struct mlxsw_sp_rif), | |
6769 | .configure = mlxsw_sp_rif_fid_configure, | |
6770 | .deconfigure = mlxsw_sp_rif_fid_deconfigure, | |
6771 | .fid_get = mlxsw_sp_rif_fid_fid_get, | |
6772 | }; | |
6773 | ||
6ddb7426 PM |
6774 | static struct mlxsw_sp_rif_ipip_lb * |
6775 | mlxsw_sp_rif_ipip_lb_rif(struct mlxsw_sp_rif *rif) | |
6776 | { | |
6777 | return container_of(rif, struct mlxsw_sp_rif_ipip_lb, common); | |
6778 | } | |
6779 | ||
6780 | static void | |
6781 | mlxsw_sp_rif_ipip_lb_setup(struct mlxsw_sp_rif *rif, | |
6782 | const struct mlxsw_sp_rif_params *params) | |
6783 | { | |
6784 | struct mlxsw_sp_rif_params_ipip_lb *params_lb; | |
6785 | struct mlxsw_sp_rif_ipip_lb *rif_lb; | |
6786 | ||
6787 | params_lb = container_of(params, struct mlxsw_sp_rif_params_ipip_lb, | |
6788 | common); | |
6789 | rif_lb = mlxsw_sp_rif_ipip_lb_rif(rif); | |
6790 | rif_lb->lb_config = params_lb->lb_config; | |
6791 | } | |
6792 | ||
6793 | static int | |
6794 | mlxsw_sp_rif_ipip_lb_op(struct mlxsw_sp_rif_ipip_lb *lb_rif, | |
6795 | struct mlxsw_sp_vr *ul_vr, bool enable) | |
6796 | { | |
6797 | struct mlxsw_sp_rif_ipip_lb_config lb_cf = lb_rif->lb_config; | |
6798 | struct mlxsw_sp_rif *rif = &lb_rif->common; | |
6799 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6800 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
6801 | u32 saddr4; | |
6802 | ||
6803 | switch (lb_cf.ul_protocol) { | |
6804 | case MLXSW_SP_L3_PROTO_IPV4: | |
6805 | saddr4 = be32_to_cpu(lb_cf.saddr.addr4); | |
6806 | mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_LOOPBACK_IF, | |
6807 | rif->rif_index, rif->vr_id, rif->dev->mtu); | |
6808 | mlxsw_reg_ritr_loopback_ipip4_pack(ritr_pl, lb_cf.lb_ipipt, | |
6809 | MLXSW_REG_RITR_LOOPBACK_IPIP_OPTIONS_GRE_KEY_PRESET, | |
6810 | ul_vr->id, saddr4, lb_cf.okey); | |
6811 | break; | |
6812 | ||
6813 | case MLXSW_SP_L3_PROTO_IPV6: | |
6814 | return -EAFNOSUPPORT; | |
6815 | } | |
6816 | ||
6817 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
6818 | } | |
6819 | ||
6820 | static int | |
6821 | mlxsw_sp_rif_ipip_lb_configure(struct mlxsw_sp_rif *rif) | |
6822 | { | |
6823 | struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif); | |
6824 | u32 ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(rif->dev); | |
6825 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6826 | struct mlxsw_sp_vr *ul_vr; | |
6827 | int err; | |
6828 | ||
f8fa9b4e | 6829 | ul_vr = mlxsw_sp_vr_get(mlxsw_sp, ul_tb_id, NULL); |
6ddb7426 PM |
6830 | if (IS_ERR(ul_vr)) |
6831 | return PTR_ERR(ul_vr); | |
6832 | ||
6833 | err = mlxsw_sp_rif_ipip_lb_op(lb_rif, ul_vr, true); | |
6834 | if (err) | |
6835 | goto err_loopback_op; | |
6836 | ||
6837 | lb_rif->ul_vr_id = ul_vr->id; | |
6838 | ++ul_vr->rif_count; | |
6839 | return 0; | |
6840 | ||
6841 | err_loopback_op: | |
6842 | mlxsw_sp_vr_put(ul_vr); | |
6843 | return err; | |
6844 | } | |
6845 | ||
6846 | static void mlxsw_sp_rif_ipip_lb_deconfigure(struct mlxsw_sp_rif *rif) | |
6847 | { | |
6848 | struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif); | |
6849 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6850 | struct mlxsw_sp_vr *ul_vr; | |
6851 | ||
6852 | ul_vr = &mlxsw_sp->router->vrs[lb_rif->ul_vr_id]; | |
6853 | mlxsw_sp_rif_ipip_lb_op(lb_rif, ul_vr, false); | |
6854 | ||
6855 | --ul_vr->rif_count; | |
6856 | mlxsw_sp_vr_put(ul_vr); | |
6857 | } | |
6858 | ||
6859 | static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_ipip_lb_ops = { | |
6860 | .type = MLXSW_SP_RIF_TYPE_IPIP_LB, | |
6861 | .rif_size = sizeof(struct mlxsw_sp_rif_ipip_lb), | |
6862 | .setup = mlxsw_sp_rif_ipip_lb_setup, | |
6863 | .configure = mlxsw_sp_rif_ipip_lb_configure, | |
6864 | .deconfigure = mlxsw_sp_rif_ipip_lb_deconfigure, | |
6865 | }; | |
6866 | ||
e4f3c1c1 IS |
6867 | static const struct mlxsw_sp_rif_ops *mlxsw_sp_rif_ops_arr[] = { |
6868 | [MLXSW_SP_RIF_TYPE_SUBPORT] = &mlxsw_sp_rif_subport_ops, | |
6869 | [MLXSW_SP_RIF_TYPE_VLAN] = &mlxsw_sp_rif_vlan_ops, | |
6870 | [MLXSW_SP_RIF_TYPE_FID] = &mlxsw_sp_rif_fid_ops, | |
6ddb7426 | 6871 | [MLXSW_SP_RIF_TYPE_IPIP_LB] = &mlxsw_sp_rif_ipip_lb_ops, |
e4f3c1c1 IS |
6872 | }; |
6873 | ||
348b8fc3 IS |
6874 | static int mlxsw_sp_rifs_init(struct mlxsw_sp *mlxsw_sp) |
6875 | { | |
6876 | u64 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); | |
6877 | ||
6878 | mlxsw_sp->router->rifs = kcalloc(max_rifs, | |
6879 | sizeof(struct mlxsw_sp_rif *), | |
6880 | GFP_KERNEL); | |
6881 | if (!mlxsw_sp->router->rifs) | |
6882 | return -ENOMEM; | |
e4f3c1c1 IS |
6883 | |
6884 | mlxsw_sp->router->rif_ops_arr = mlxsw_sp_rif_ops_arr; | |
6885 | ||
348b8fc3 IS |
6886 | return 0; |
6887 | } | |
6888 | ||
6889 | static void mlxsw_sp_rifs_fini(struct mlxsw_sp *mlxsw_sp) | |
6890 | { | |
6891 | int i; | |
6892 | ||
6893 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
6894 | WARN_ON_ONCE(mlxsw_sp->router->rifs[i]); | |
6895 | ||
6896 | kfree(mlxsw_sp->router->rifs); | |
6897 | } | |
6898 | ||
dcbda282 PM |
6899 | static int |
6900 | mlxsw_sp_ipip_config_tigcr(struct mlxsw_sp *mlxsw_sp) | |
6901 | { | |
6902 | char tigcr_pl[MLXSW_REG_TIGCR_LEN]; | |
6903 | ||
6904 | mlxsw_reg_tigcr_pack(tigcr_pl, true, 0); | |
6905 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tigcr), tigcr_pl); | |
6906 | } | |
6907 | ||
38ebc0f4 PM |
6908 | static int mlxsw_sp_ipips_init(struct mlxsw_sp *mlxsw_sp) |
6909 | { | |
6910 | mlxsw_sp->router->ipip_ops_arr = mlxsw_sp_ipip_ops_arr; | |
1012b9ac | 6911 | INIT_LIST_HEAD(&mlxsw_sp->router->ipip_list); |
dcbda282 | 6912 | return mlxsw_sp_ipip_config_tigcr(mlxsw_sp); |
38ebc0f4 PM |
6913 | } |
6914 | ||
6915 | static void mlxsw_sp_ipips_fini(struct mlxsw_sp *mlxsw_sp) | |
6916 | { | |
1012b9ac | 6917 | WARN_ON(!list_empty(&mlxsw_sp->router->ipip_list)); |
38ebc0f4 PM |
6918 | } |
6919 | ||
c3852ef7 IS |
6920 | static void mlxsw_sp_router_fib_dump_flush(struct notifier_block *nb) |
6921 | { | |
7e39d115 | 6922 | struct mlxsw_sp_router *router; |
c3852ef7 IS |
6923 | |
6924 | /* Flush pending FIB notifications and then flush the device's | |
6925 | * table before requesting another dump. The FIB notification | |
6926 | * block is unregistered, so no need to take RTNL. | |
6927 | */ | |
6928 | mlxsw_core_flush_owq(); | |
7e39d115 IS |
6929 | router = container_of(nb, struct mlxsw_sp_router, fib_nb); |
6930 | mlxsw_sp_router_fib_flush(router->mlxsw_sp); | |
c3852ef7 IS |
6931 | } |
6932 | ||
af658b6a IS |
6933 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
6934 | static void mlxsw_sp_mp_hash_header_set(char *recr2_pl, int header) | |
6935 | { | |
6936 | mlxsw_reg_recr2_outer_header_enables_set(recr2_pl, header, true); | |
6937 | } | |
6938 | ||
6939 | static void mlxsw_sp_mp_hash_field_set(char *recr2_pl, int field) | |
6940 | { | |
6941 | mlxsw_reg_recr2_outer_header_fields_enable_set(recr2_pl, field, true); | |
6942 | } | |
6943 | ||
6944 | static void mlxsw_sp_mp4_hash_init(char *recr2_pl) | |
6945 | { | |
6946 | bool only_l3 = !init_net.ipv4.sysctl_fib_multipath_hash_policy; | |
6947 | ||
6948 | mlxsw_sp_mp_hash_header_set(recr2_pl, | |
6949 | MLXSW_REG_RECR2_IPV4_EN_NOT_TCP_NOT_UDP); | |
6950 | mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV4_EN_TCP_UDP); | |
6951 | mlxsw_reg_recr2_ipv4_sip_enable(recr2_pl); | |
6952 | mlxsw_reg_recr2_ipv4_dip_enable(recr2_pl); | |
6953 | if (only_l3) | |
6954 | return; | |
6955 | mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_EN_IPV4); | |
6956 | mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_IPV4_PROTOCOL); | |
6957 | mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_SPORT); | |
6958 | mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_DPORT); | |
6959 | } | |
6960 | ||
6961 | static void mlxsw_sp_mp6_hash_init(char *recr2_pl) | |
6962 | { | |
6963 | mlxsw_sp_mp_hash_header_set(recr2_pl, | |
6964 | MLXSW_REG_RECR2_IPV6_EN_NOT_TCP_NOT_UDP); | |
6965 | mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV6_EN_TCP_UDP); | |
6966 | mlxsw_reg_recr2_ipv6_sip_enable(recr2_pl); | |
6967 | mlxsw_reg_recr2_ipv6_dip_enable(recr2_pl); | |
6968 | mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_IPV6_FLOW_LABEL); | |
6969 | mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_IPV6_NEXT_HEADER); | |
6970 | } | |
6971 | ||
6972 | static int mlxsw_sp_mp_hash_init(struct mlxsw_sp *mlxsw_sp) | |
6973 | { | |
6974 | char recr2_pl[MLXSW_REG_RECR2_LEN]; | |
6975 | u32 seed; | |
6976 | ||
6977 | get_random_bytes(&seed, sizeof(seed)); | |
6978 | mlxsw_reg_recr2_pack(recr2_pl, seed); | |
6979 | mlxsw_sp_mp4_hash_init(recr2_pl); | |
6980 | mlxsw_sp_mp6_hash_init(recr2_pl); | |
6981 | ||
6982 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(recr2), recr2_pl); | |
6983 | } | |
6984 | #else | |
6985 | static int mlxsw_sp_mp_hash_init(struct mlxsw_sp *mlxsw_sp) | |
6986 | { | |
6987 | return 0; | |
6988 | } | |
6989 | #endif | |
6990 | ||
4724ba56 IS |
6991 | static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
6992 | { | |
6993 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
6994 | u64 max_rifs; | |
6995 | int err; | |
6996 | ||
6997 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS)) | |
6998 | return -EIO; | |
4724ba56 | 6999 | max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); |
4724ba56 | 7000 | |
e29237e7 | 7001 | mlxsw_reg_rgcr_pack(rgcr_pl, true, true); |
4724ba56 IS |
7002 | mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs); |
7003 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
7004 | if (err) | |
348b8fc3 | 7005 | return err; |
4724ba56 | 7006 | return 0; |
4724ba56 IS |
7007 | } |
7008 | ||
7009 | static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
7010 | { | |
7011 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
4724ba56 | 7012 | |
e29237e7 | 7013 | mlxsw_reg_rgcr_pack(rgcr_pl, false, false); |
4724ba56 | 7014 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); |
4724ba56 IS |
7015 | } |
7016 | ||
b45f64d1 JP |
7017 | int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
7018 | { | |
9011b677 | 7019 | struct mlxsw_sp_router *router; |
b45f64d1 JP |
7020 | int err; |
7021 | ||
9011b677 IS |
7022 | router = kzalloc(sizeof(*mlxsw_sp->router), GFP_KERNEL); |
7023 | if (!router) | |
7024 | return -ENOMEM; | |
7025 | mlxsw_sp->router = router; | |
7026 | router->mlxsw_sp = mlxsw_sp; | |
7027 | ||
7028 | INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_neighs_list); | |
b45f64d1 JP |
7029 | err = __mlxsw_sp_router_init(mlxsw_sp); |
7030 | if (err) | |
9011b677 | 7031 | goto err_router_init; |
b45f64d1 | 7032 | |
348b8fc3 IS |
7033 | err = mlxsw_sp_rifs_init(mlxsw_sp); |
7034 | if (err) | |
7035 | goto err_rifs_init; | |
7036 | ||
38ebc0f4 PM |
7037 | err = mlxsw_sp_ipips_init(mlxsw_sp); |
7038 | if (err) | |
7039 | goto err_ipips_init; | |
7040 | ||
9011b677 | 7041 | err = rhashtable_init(&mlxsw_sp->router->nexthop_ht, |
c53b8e1b IS |
7042 | &mlxsw_sp_nexthop_ht_params); |
7043 | if (err) | |
7044 | goto err_nexthop_ht_init; | |
7045 | ||
9011b677 | 7046 | err = rhashtable_init(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
7047 | &mlxsw_sp_nexthop_group_ht_params); |
7048 | if (err) | |
7049 | goto err_nexthop_group_ht_init; | |
7050 | ||
dbe4598c | 7051 | INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_list); |
8494ab06 IS |
7052 | err = mlxsw_sp_lpm_init(mlxsw_sp); |
7053 | if (err) | |
7054 | goto err_lpm_init; | |
7055 | ||
d42b0965 YG |
7056 | err = mlxsw_sp_mr_init(mlxsw_sp, &mlxsw_sp_mr_tcam_ops); |
7057 | if (err) | |
7058 | goto err_mr_init; | |
7059 | ||
b45f64d1 JP |
7060 | err = mlxsw_sp_vrs_init(mlxsw_sp); |
7061 | if (err) | |
7062 | goto err_vrs_init; | |
7063 | ||
8c9583a8 | 7064 | err = mlxsw_sp_neigh_init(mlxsw_sp); |
b45f64d1 JP |
7065 | if (err) |
7066 | goto err_neigh_init; | |
7067 | ||
48fac885 IS |
7068 | mlxsw_sp->router->netevent_nb.notifier_call = |
7069 | mlxsw_sp_router_netevent_event; | |
7070 | err = register_netevent_notifier(&mlxsw_sp->router->netevent_nb); | |
7071 | if (err) | |
7072 | goto err_register_netevent_notifier; | |
7073 | ||
af658b6a IS |
7074 | err = mlxsw_sp_mp_hash_init(mlxsw_sp); |
7075 | if (err) | |
7076 | goto err_mp_hash_init; | |
7077 | ||
7e39d115 IS |
7078 | mlxsw_sp->router->fib_nb.notifier_call = mlxsw_sp_router_fib_event; |
7079 | err = register_fib_notifier(&mlxsw_sp->router->fib_nb, | |
c3852ef7 IS |
7080 | mlxsw_sp_router_fib_dump_flush); |
7081 | if (err) | |
7082 | goto err_register_fib_notifier; | |
7083 | ||
b45f64d1 JP |
7084 | return 0; |
7085 | ||
c3852ef7 | 7086 | err_register_fib_notifier: |
af658b6a | 7087 | err_mp_hash_init: |
48fac885 IS |
7088 | unregister_netevent_notifier(&mlxsw_sp->router->netevent_nb); |
7089 | err_register_netevent_notifier: | |
c3852ef7 | 7090 | mlxsw_sp_neigh_fini(mlxsw_sp); |
b45f64d1 JP |
7091 | err_neigh_init: |
7092 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
7093 | err_vrs_init: | |
d42b0965 YG |
7094 | mlxsw_sp_mr_fini(mlxsw_sp); |
7095 | err_mr_init: | |
8494ab06 IS |
7096 | mlxsw_sp_lpm_fini(mlxsw_sp); |
7097 | err_lpm_init: | |
9011b677 | 7098 | rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht); |
e9ad5e7d | 7099 | err_nexthop_group_ht_init: |
9011b677 | 7100 | rhashtable_destroy(&mlxsw_sp->router->nexthop_ht); |
c53b8e1b | 7101 | err_nexthop_ht_init: |
38ebc0f4 PM |
7102 | mlxsw_sp_ipips_fini(mlxsw_sp); |
7103 | err_ipips_init: | |
348b8fc3 IS |
7104 | mlxsw_sp_rifs_fini(mlxsw_sp); |
7105 | err_rifs_init: | |
b45f64d1 | 7106 | __mlxsw_sp_router_fini(mlxsw_sp); |
9011b677 IS |
7107 | err_router_init: |
7108 | kfree(mlxsw_sp->router); | |
b45f64d1 JP |
7109 | return err; |
7110 | } | |
7111 | ||
7112 | void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
7113 | { | |
7e39d115 | 7114 | unregister_fib_notifier(&mlxsw_sp->router->fib_nb); |
48fac885 | 7115 | unregister_netevent_notifier(&mlxsw_sp->router->netevent_nb); |
b45f64d1 JP |
7116 | mlxsw_sp_neigh_fini(mlxsw_sp); |
7117 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
d42b0965 | 7118 | mlxsw_sp_mr_fini(mlxsw_sp); |
8494ab06 | 7119 | mlxsw_sp_lpm_fini(mlxsw_sp); |
9011b677 IS |
7120 | rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht); |
7121 | rhashtable_destroy(&mlxsw_sp->router->nexthop_ht); | |
38ebc0f4 | 7122 | mlxsw_sp_ipips_fini(mlxsw_sp); |
348b8fc3 | 7123 | mlxsw_sp_rifs_fini(mlxsw_sp); |
b45f64d1 | 7124 | __mlxsw_sp_router_fini(mlxsw_sp); |
9011b677 | 7125 | kfree(mlxsw_sp->router); |
b45f64d1 | 7126 | } |