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 | ||
9665b745 | 2419 | static void mlxsw_sp_neigh_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, |
bf95233e | 2420 | struct mlxsw_sp_rif *rif) |
9665b745 IS |
2421 | { |
2422 | struct mlxsw_sp_neigh_entry *neigh_entry, *tmp; | |
2423 | ||
bf95233e | 2424 | list_for_each_entry_safe(neigh_entry, tmp, &rif->neigh_list, |
4a3c67a6 IS |
2425 | rif_list_node) { |
2426 | mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, false); | |
9665b745 | 2427 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); |
4a3c67a6 | 2428 | } |
9665b745 IS |
2429 | } |
2430 | ||
35225e47 PM |
2431 | enum mlxsw_sp_nexthop_type { |
2432 | MLXSW_SP_NEXTHOP_TYPE_ETH, | |
1012b9ac | 2433 | MLXSW_SP_NEXTHOP_TYPE_IPIP, |
35225e47 PM |
2434 | }; |
2435 | ||
c53b8e1b IS |
2436 | struct mlxsw_sp_nexthop_key { |
2437 | struct fib_nh *fib_nh; | |
2438 | }; | |
2439 | ||
a7ff87ac JP |
2440 | struct mlxsw_sp_nexthop { |
2441 | struct list_head neigh_list_node; /* member of neigh entry list */ | |
9665b745 | 2442 | struct list_head rif_list_node; |
dbe4598c | 2443 | struct list_head router_list_node; |
a7ff87ac JP |
2444 | struct mlxsw_sp_nexthop_group *nh_grp; /* pointer back to the group |
2445 | * this belongs to | |
2446 | */ | |
c53b8e1b IS |
2447 | struct rhash_head ht_node; |
2448 | struct mlxsw_sp_nexthop_key key; | |
58adf2c4 | 2449 | unsigned char gw_addr[sizeof(struct in6_addr)]; |
e6f3b379 | 2450 | int ifindex; |
408bd946 | 2451 | int nh_weight; |
eb789980 IS |
2452 | int norm_nh_weight; |
2453 | int num_adj_entries; | |
bf95233e | 2454 | struct mlxsw_sp_rif *rif; |
a7ff87ac JP |
2455 | u8 should_offload:1, /* set indicates this neigh is connected and |
2456 | * should be put to KVD linear area of this group. | |
2457 | */ | |
2458 | offloaded:1, /* set in case the neigh is actually put into | |
2459 | * KVD linear area of this group. | |
2460 | */ | |
2461 | update:1; /* set indicates that MAC of this neigh should be | |
2462 | * updated in HW | |
2463 | */ | |
35225e47 PM |
2464 | enum mlxsw_sp_nexthop_type type; |
2465 | union { | |
2466 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1012b9ac | 2467 | struct mlxsw_sp_ipip_entry *ipip_entry; |
35225e47 | 2468 | }; |
a5390278 AS |
2469 | unsigned int counter_index; |
2470 | bool counter_valid; | |
a7ff87ac JP |
2471 | }; |
2472 | ||
2473 | struct mlxsw_sp_nexthop_group { | |
ba31d366 | 2474 | void *priv; |
e9ad5e7d | 2475 | struct rhash_head ht_node; |
a7ff87ac | 2476 | struct list_head fib_list; /* list of fib entries that use this group */ |
58adf2c4 | 2477 | struct neigh_table *neigh_tbl; |
b3e8d1eb IS |
2478 | u8 adj_index_valid:1, |
2479 | gateway:1; /* routes using the group use a gateway */ | |
a7ff87ac JP |
2480 | u32 adj_index; |
2481 | u16 ecmp_size; | |
2482 | u16 count; | |
eb789980 | 2483 | int sum_norm_weight; |
a7ff87ac | 2484 | struct mlxsw_sp_nexthop nexthops[0]; |
bf95233e | 2485 | #define nh_rif nexthops[0].rif |
a7ff87ac JP |
2486 | }; |
2487 | ||
427e652a AS |
2488 | void mlxsw_sp_nexthop_counter_alloc(struct mlxsw_sp *mlxsw_sp, |
2489 | struct mlxsw_sp_nexthop *nh) | |
a5390278 AS |
2490 | { |
2491 | struct devlink *devlink; | |
2492 | ||
2493 | devlink = priv_to_devlink(mlxsw_sp->core); | |
2494 | if (!devlink_dpipe_table_counter_enabled(devlink, | |
2495 | MLXSW_SP_DPIPE_TABLE_NAME_ADJ)) | |
2496 | return; | |
2497 | ||
2498 | if (mlxsw_sp_flow_counter_alloc(mlxsw_sp, &nh->counter_index)) | |
2499 | return; | |
2500 | ||
2501 | nh->counter_valid = true; | |
2502 | } | |
2503 | ||
427e652a AS |
2504 | void mlxsw_sp_nexthop_counter_free(struct mlxsw_sp *mlxsw_sp, |
2505 | struct mlxsw_sp_nexthop *nh) | |
a5390278 AS |
2506 | { |
2507 | if (!nh->counter_valid) | |
2508 | return; | |
2509 | mlxsw_sp_flow_counter_free(mlxsw_sp, nh->counter_index); | |
2510 | nh->counter_valid = false; | |
2511 | } | |
2512 | ||
2513 | int mlxsw_sp_nexthop_counter_get(struct mlxsw_sp *mlxsw_sp, | |
2514 | struct mlxsw_sp_nexthop *nh, u64 *p_counter) | |
2515 | { | |
2516 | if (!nh->counter_valid) | |
2517 | return -EINVAL; | |
2518 | ||
2519 | return mlxsw_sp_flow_counter_get(mlxsw_sp, nh->counter_index, | |
2520 | p_counter, NULL); | |
2521 | } | |
2522 | ||
c556cd28 AS |
2523 | struct mlxsw_sp_nexthop *mlxsw_sp_nexthop_next(struct mlxsw_sp_router *router, |
2524 | struct mlxsw_sp_nexthop *nh) | |
2525 | { | |
2526 | if (!nh) { | |
2527 | if (list_empty(&router->nexthop_list)) | |
2528 | return NULL; | |
2529 | else | |
2530 | return list_first_entry(&router->nexthop_list, | |
2531 | typeof(*nh), router_list_node); | |
2532 | } | |
2533 | if (list_is_last(&nh->router_list_node, &router->nexthop_list)) | |
2534 | return NULL; | |
2535 | return list_next_entry(nh, router_list_node); | |
2536 | } | |
2537 | ||
2538 | bool mlxsw_sp_nexthop_offload(struct mlxsw_sp_nexthop *nh) | |
2539 | { | |
2540 | return nh->offloaded; | |
2541 | } | |
2542 | ||
2543 | unsigned char *mlxsw_sp_nexthop_ha(struct mlxsw_sp_nexthop *nh) | |
2544 | { | |
2545 | if (!nh->offloaded) | |
2546 | return NULL; | |
2547 | return nh->neigh_entry->ha; | |
2548 | } | |
2549 | ||
2550 | int mlxsw_sp_nexthop_indexes(struct mlxsw_sp_nexthop *nh, u32 *p_adj_index, | |
e69cd9d7 | 2551 | u32 *p_adj_size, u32 *p_adj_hash_index) |
c556cd28 AS |
2552 | { |
2553 | struct mlxsw_sp_nexthop_group *nh_grp = nh->nh_grp; | |
2554 | u32 adj_hash_index = 0; | |
2555 | int i; | |
2556 | ||
2557 | if (!nh->offloaded || !nh_grp->adj_index_valid) | |
2558 | return -EINVAL; | |
2559 | ||
2560 | *p_adj_index = nh_grp->adj_index; | |
e69cd9d7 | 2561 | *p_adj_size = nh_grp->ecmp_size; |
c556cd28 AS |
2562 | |
2563 | for (i = 0; i < nh_grp->count; i++) { | |
2564 | struct mlxsw_sp_nexthop *nh_iter = &nh_grp->nexthops[i]; | |
2565 | ||
2566 | if (nh_iter == nh) | |
2567 | break; | |
2568 | if (nh_iter->offloaded) | |
eb789980 | 2569 | adj_hash_index += nh_iter->num_adj_entries; |
c556cd28 AS |
2570 | } |
2571 | ||
2572 | *p_adj_hash_index = adj_hash_index; | |
2573 | return 0; | |
2574 | } | |
2575 | ||
2576 | struct mlxsw_sp_rif *mlxsw_sp_nexthop_rif(struct mlxsw_sp_nexthop *nh) | |
2577 | { | |
2578 | return nh->rif; | |
2579 | } | |
2580 | ||
2581 | bool mlxsw_sp_nexthop_group_has_ipip(struct mlxsw_sp_nexthop *nh) | |
2582 | { | |
2583 | struct mlxsw_sp_nexthop_group *nh_grp = nh->nh_grp; | |
2584 | int i; | |
2585 | ||
2586 | for (i = 0; i < nh_grp->count; i++) { | |
2587 | struct mlxsw_sp_nexthop *nh_iter = &nh_grp->nexthops[i]; | |
2588 | ||
2589 | if (nh_iter->type == MLXSW_SP_NEXTHOP_TYPE_IPIP) | |
2590 | return true; | |
2591 | } | |
2592 | return false; | |
2593 | } | |
2594 | ||
ba31d366 AS |
2595 | static struct fib_info * |
2596 | mlxsw_sp_nexthop4_group_fi(const struct mlxsw_sp_nexthop_group *nh_grp) | |
2597 | { | |
2598 | return nh_grp->priv; | |
2599 | } | |
2600 | ||
2601 | struct mlxsw_sp_nexthop_group_cmp_arg { | |
e6f3b379 AS |
2602 | enum mlxsw_sp_l3proto proto; |
2603 | union { | |
2604 | struct fib_info *fi; | |
2605 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
2606 | }; | |
ba31d366 AS |
2607 | }; |
2608 | ||
e6f3b379 AS |
2609 | static bool |
2610 | mlxsw_sp_nexthop6_group_has_nexthop(const struct mlxsw_sp_nexthop_group *nh_grp, | |
2611 | const struct in6_addr *gw, int ifindex) | |
2612 | { | |
2613 | int i; | |
2614 | ||
2615 | for (i = 0; i < nh_grp->count; i++) { | |
2616 | const struct mlxsw_sp_nexthop *nh; | |
2617 | ||
2618 | nh = &nh_grp->nexthops[i]; | |
2619 | if (nh->ifindex == ifindex && | |
2620 | ipv6_addr_equal(gw, (struct in6_addr *) nh->gw_addr)) | |
2621 | return true; | |
2622 | } | |
2623 | ||
2624 | return false; | |
2625 | } | |
2626 | ||
2627 | static bool | |
2628 | mlxsw_sp_nexthop6_group_cmp(const struct mlxsw_sp_nexthop_group *nh_grp, | |
2629 | const struct mlxsw_sp_fib6_entry *fib6_entry) | |
2630 | { | |
2631 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
2632 | ||
2633 | if (nh_grp->count != fib6_entry->nrt6) | |
2634 | return false; | |
2635 | ||
2636 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
2637 | struct in6_addr *gw; | |
2638 | int ifindex; | |
2639 | ||
2640 | ifindex = mlxsw_sp_rt6->rt->dst.dev->ifindex; | |
2641 | gw = &mlxsw_sp_rt6->rt->rt6i_gateway; | |
2642 | if (!mlxsw_sp_nexthop6_group_has_nexthop(nh_grp, gw, ifindex)) | |
2643 | return false; | |
2644 | } | |
2645 | ||
2646 | return true; | |
2647 | } | |
2648 | ||
ba31d366 AS |
2649 | static int |
2650 | mlxsw_sp_nexthop_group_cmp(struct rhashtable_compare_arg *arg, const void *ptr) | |
2651 | { | |
2652 | const struct mlxsw_sp_nexthop_group_cmp_arg *cmp_arg = arg->key; | |
2653 | const struct mlxsw_sp_nexthop_group *nh_grp = ptr; | |
2654 | ||
e6f3b379 AS |
2655 | switch (cmp_arg->proto) { |
2656 | case MLXSW_SP_L3_PROTO_IPV4: | |
2657 | return cmp_arg->fi != mlxsw_sp_nexthop4_group_fi(nh_grp); | |
2658 | case MLXSW_SP_L3_PROTO_IPV6: | |
2659 | return !mlxsw_sp_nexthop6_group_cmp(nh_grp, | |
2660 | cmp_arg->fib6_entry); | |
2661 | default: | |
2662 | WARN_ON(1); | |
2663 | return 1; | |
2664 | } | |
2665 | } | |
2666 | ||
2667 | static int | |
2668 | mlxsw_sp_nexthop_group_type(const struct mlxsw_sp_nexthop_group *nh_grp) | |
2669 | { | |
2670 | return nh_grp->neigh_tbl->family; | |
ba31d366 AS |
2671 | } |
2672 | ||
2673 | static u32 mlxsw_sp_nexthop_group_hash_obj(const void *data, u32 len, u32 seed) | |
2674 | { | |
2675 | const struct mlxsw_sp_nexthop_group *nh_grp = data; | |
e6f3b379 AS |
2676 | const struct mlxsw_sp_nexthop *nh; |
2677 | struct fib_info *fi; | |
2678 | unsigned int val; | |
2679 | int i; | |
ba31d366 | 2680 | |
e6f3b379 AS |
2681 | switch (mlxsw_sp_nexthop_group_type(nh_grp)) { |
2682 | case AF_INET: | |
2683 | fi = mlxsw_sp_nexthop4_group_fi(nh_grp); | |
2684 | return jhash(&fi, sizeof(fi), seed); | |
2685 | case AF_INET6: | |
2686 | val = nh_grp->count; | |
2687 | for (i = 0; i < nh_grp->count; i++) { | |
2688 | nh = &nh_grp->nexthops[i]; | |
2689 | val ^= nh->ifindex; | |
2690 | } | |
2691 | return jhash(&val, sizeof(val), seed); | |
2692 | default: | |
2693 | WARN_ON(1); | |
2694 | return 0; | |
2695 | } | |
2696 | } | |
2697 | ||
2698 | static u32 | |
2699 | mlxsw_sp_nexthop6_group_hash(struct mlxsw_sp_fib6_entry *fib6_entry, u32 seed) | |
2700 | { | |
2701 | unsigned int val = fib6_entry->nrt6; | |
2702 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
2703 | struct net_device *dev; | |
2704 | ||
2705 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
2706 | dev = mlxsw_sp_rt6->rt->dst.dev; | |
2707 | val ^= dev->ifindex; | |
2708 | } | |
2709 | ||
2710 | return jhash(&val, sizeof(val), seed); | |
ba31d366 AS |
2711 | } |
2712 | ||
2713 | static u32 | |
2714 | mlxsw_sp_nexthop_group_hash(const void *data, u32 len, u32 seed) | |
2715 | { | |
2716 | const struct mlxsw_sp_nexthop_group_cmp_arg *cmp_arg = data; | |
2717 | ||
e6f3b379 AS |
2718 | switch (cmp_arg->proto) { |
2719 | case MLXSW_SP_L3_PROTO_IPV4: | |
2720 | return jhash(&cmp_arg->fi, sizeof(cmp_arg->fi), seed); | |
2721 | case MLXSW_SP_L3_PROTO_IPV6: | |
2722 | return mlxsw_sp_nexthop6_group_hash(cmp_arg->fib6_entry, seed); | |
2723 | default: | |
2724 | WARN_ON(1); | |
2725 | return 0; | |
2726 | } | |
ba31d366 AS |
2727 | } |
2728 | ||
e9ad5e7d | 2729 | static const struct rhashtable_params mlxsw_sp_nexthop_group_ht_params = { |
e9ad5e7d | 2730 | .head_offset = offsetof(struct mlxsw_sp_nexthop_group, ht_node), |
ba31d366 AS |
2731 | .hashfn = mlxsw_sp_nexthop_group_hash, |
2732 | .obj_hashfn = mlxsw_sp_nexthop_group_hash_obj, | |
2733 | .obj_cmpfn = mlxsw_sp_nexthop_group_cmp, | |
e9ad5e7d IS |
2734 | }; |
2735 | ||
2736 | static int mlxsw_sp_nexthop_group_insert(struct mlxsw_sp *mlxsw_sp, | |
2737 | struct mlxsw_sp_nexthop_group *nh_grp) | |
2738 | { | |
e6f3b379 AS |
2739 | if (mlxsw_sp_nexthop_group_type(nh_grp) == AF_INET6 && |
2740 | !nh_grp->gateway) | |
2741 | return 0; | |
2742 | ||
9011b677 | 2743 | return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
2744 | &nh_grp->ht_node, |
2745 | mlxsw_sp_nexthop_group_ht_params); | |
2746 | } | |
2747 | ||
2748 | static void mlxsw_sp_nexthop_group_remove(struct mlxsw_sp *mlxsw_sp, | |
2749 | struct mlxsw_sp_nexthop_group *nh_grp) | |
2750 | { | |
e6f3b379 AS |
2751 | if (mlxsw_sp_nexthop_group_type(nh_grp) == AF_INET6 && |
2752 | !nh_grp->gateway) | |
2753 | return; | |
2754 | ||
9011b677 | 2755 | rhashtable_remove_fast(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
2756 | &nh_grp->ht_node, |
2757 | mlxsw_sp_nexthop_group_ht_params); | |
2758 | } | |
2759 | ||
2760 | static struct mlxsw_sp_nexthop_group * | |
ba31d366 AS |
2761 | mlxsw_sp_nexthop4_group_lookup(struct mlxsw_sp *mlxsw_sp, |
2762 | struct fib_info *fi) | |
e9ad5e7d | 2763 | { |
ba31d366 AS |
2764 | struct mlxsw_sp_nexthop_group_cmp_arg cmp_arg; |
2765 | ||
e6f3b379 | 2766 | cmp_arg.proto = MLXSW_SP_L3_PROTO_IPV4; |
ba31d366 AS |
2767 | cmp_arg.fi = fi; |
2768 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, | |
2769 | &cmp_arg, | |
e9ad5e7d IS |
2770 | mlxsw_sp_nexthop_group_ht_params); |
2771 | } | |
2772 | ||
e6f3b379 AS |
2773 | static struct mlxsw_sp_nexthop_group * |
2774 | mlxsw_sp_nexthop6_group_lookup(struct mlxsw_sp *mlxsw_sp, | |
2775 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
2776 | { | |
2777 | struct mlxsw_sp_nexthop_group_cmp_arg cmp_arg; | |
2778 | ||
2779 | cmp_arg.proto = MLXSW_SP_L3_PROTO_IPV6; | |
2780 | cmp_arg.fib6_entry = fib6_entry; | |
2781 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, | |
2782 | &cmp_arg, | |
2783 | mlxsw_sp_nexthop_group_ht_params); | |
2784 | } | |
2785 | ||
c53b8e1b IS |
2786 | static const struct rhashtable_params mlxsw_sp_nexthop_ht_params = { |
2787 | .key_offset = offsetof(struct mlxsw_sp_nexthop, key), | |
2788 | .head_offset = offsetof(struct mlxsw_sp_nexthop, ht_node), | |
2789 | .key_len = sizeof(struct mlxsw_sp_nexthop_key), | |
2790 | }; | |
2791 | ||
2792 | static int mlxsw_sp_nexthop_insert(struct mlxsw_sp *mlxsw_sp, | |
2793 | struct mlxsw_sp_nexthop *nh) | |
2794 | { | |
9011b677 | 2795 | return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_ht, |
c53b8e1b IS |
2796 | &nh->ht_node, mlxsw_sp_nexthop_ht_params); |
2797 | } | |
2798 | ||
2799 | static void mlxsw_sp_nexthop_remove(struct mlxsw_sp *mlxsw_sp, | |
2800 | struct mlxsw_sp_nexthop *nh) | |
2801 | { | |
9011b677 | 2802 | rhashtable_remove_fast(&mlxsw_sp->router->nexthop_ht, &nh->ht_node, |
c53b8e1b IS |
2803 | mlxsw_sp_nexthop_ht_params); |
2804 | } | |
2805 | ||
ad178c8e IS |
2806 | static struct mlxsw_sp_nexthop * |
2807 | mlxsw_sp_nexthop_lookup(struct mlxsw_sp *mlxsw_sp, | |
2808 | struct mlxsw_sp_nexthop_key key) | |
2809 | { | |
9011b677 | 2810 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_ht, &key, |
ad178c8e IS |
2811 | mlxsw_sp_nexthop_ht_params); |
2812 | } | |
2813 | ||
a7ff87ac | 2814 | static int mlxsw_sp_adj_index_mass_update_vr(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 2815 | const struct mlxsw_sp_fib *fib, |
a7ff87ac JP |
2816 | u32 adj_index, u16 ecmp_size, |
2817 | u32 new_adj_index, | |
2818 | u16 new_ecmp_size) | |
2819 | { | |
2820 | char raleu_pl[MLXSW_REG_RALEU_LEN]; | |
2821 | ||
1a9234e6 | 2822 | mlxsw_reg_raleu_pack(raleu_pl, |
76610ebb IS |
2823 | (enum mlxsw_reg_ralxx_protocol) fib->proto, |
2824 | fib->vr->id, adj_index, ecmp_size, new_adj_index, | |
1a9234e6 | 2825 | new_ecmp_size); |
a7ff87ac JP |
2826 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raleu), raleu_pl); |
2827 | } | |
2828 | ||
2829 | static int mlxsw_sp_adj_index_mass_update(struct mlxsw_sp *mlxsw_sp, | |
2830 | struct mlxsw_sp_nexthop_group *nh_grp, | |
2831 | u32 old_adj_index, u16 old_ecmp_size) | |
2832 | { | |
2833 | struct mlxsw_sp_fib_entry *fib_entry; | |
76610ebb | 2834 | struct mlxsw_sp_fib *fib = NULL; |
a7ff87ac JP |
2835 | int err; |
2836 | ||
2837 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
76610ebb | 2838 | if (fib == fib_entry->fib_node->fib) |
a7ff87ac | 2839 | continue; |
76610ebb IS |
2840 | fib = fib_entry->fib_node->fib; |
2841 | err = mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, fib, | |
a7ff87ac JP |
2842 | old_adj_index, |
2843 | old_ecmp_size, | |
2844 | nh_grp->adj_index, | |
2845 | nh_grp->ecmp_size); | |
2846 | if (err) | |
2847 | return err; | |
2848 | } | |
2849 | return 0; | |
2850 | } | |
2851 | ||
eb789980 IS |
2852 | static int __mlxsw_sp_nexthop_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, |
2853 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
2854 | { |
2855 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
2856 | char ratr_pl[MLXSW_REG_RATR_LEN]; | |
2857 | ||
2858 | mlxsw_reg_ratr_pack(ratr_pl, MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY, | |
89e41982 PM |
2859 | true, MLXSW_REG_RATR_TYPE_ETHERNET, |
2860 | adj_index, neigh_entry->rif); | |
a7ff87ac | 2861 | mlxsw_reg_ratr_eth_entry_pack(ratr_pl, neigh_entry->ha); |
a5390278 AS |
2862 | if (nh->counter_valid) |
2863 | mlxsw_reg_ratr_counter_pack(ratr_pl, nh->counter_index, true); | |
2864 | else | |
2865 | mlxsw_reg_ratr_counter_pack(ratr_pl, 0, false); | |
2866 | ||
a7ff87ac JP |
2867 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl); |
2868 | } | |
2869 | ||
eb789980 IS |
2870 | int mlxsw_sp_nexthop_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, |
2871 | struct mlxsw_sp_nexthop *nh) | |
2872 | { | |
2873 | int i; | |
2874 | ||
2875 | for (i = 0; i < nh->num_adj_entries; i++) { | |
2876 | int err; | |
2877 | ||
2878 | err = __mlxsw_sp_nexthop_update(mlxsw_sp, adj_index + i, nh); | |
2879 | if (err) | |
2880 | return err; | |
2881 | } | |
2882 | ||
2883 | return 0; | |
2884 | } | |
2885 | ||
2886 | static int __mlxsw_sp_nexthop_ipip_update(struct mlxsw_sp *mlxsw_sp, | |
2887 | u32 adj_index, | |
2888 | struct mlxsw_sp_nexthop *nh) | |
1012b9ac PM |
2889 | { |
2890 | const struct mlxsw_sp_ipip_ops *ipip_ops; | |
2891 | ||
2892 | ipip_ops = mlxsw_sp->router->ipip_ops_arr[nh->ipip_entry->ipipt]; | |
2893 | return ipip_ops->nexthop_update(mlxsw_sp, adj_index, nh->ipip_entry); | |
2894 | } | |
2895 | ||
eb789980 IS |
2896 | static int mlxsw_sp_nexthop_ipip_update(struct mlxsw_sp *mlxsw_sp, |
2897 | u32 adj_index, | |
2898 | struct mlxsw_sp_nexthop *nh) | |
2899 | { | |
2900 | int i; | |
2901 | ||
2902 | for (i = 0; i < nh->num_adj_entries; i++) { | |
2903 | int err; | |
2904 | ||
2905 | err = __mlxsw_sp_nexthop_ipip_update(mlxsw_sp, adj_index + i, | |
2906 | nh); | |
2907 | if (err) | |
2908 | return err; | |
2909 | } | |
2910 | ||
2911 | return 0; | |
2912 | } | |
2913 | ||
a7ff87ac | 2914 | static int |
35225e47 PM |
2915 | mlxsw_sp_nexthop_group_update(struct mlxsw_sp *mlxsw_sp, |
2916 | struct mlxsw_sp_nexthop_group *nh_grp, | |
2917 | bool reallocate) | |
a7ff87ac JP |
2918 | { |
2919 | u32 adj_index = nh_grp->adj_index; /* base */ | |
2920 | struct mlxsw_sp_nexthop *nh; | |
2921 | int i; | |
2922 | int err; | |
2923 | ||
2924 | for (i = 0; i < nh_grp->count; i++) { | |
2925 | nh = &nh_grp->nexthops[i]; | |
2926 | ||
2927 | if (!nh->should_offload) { | |
2928 | nh->offloaded = 0; | |
2929 | continue; | |
2930 | } | |
2931 | ||
a59b7e02 | 2932 | if (nh->update || reallocate) { |
35225e47 PM |
2933 | switch (nh->type) { |
2934 | case MLXSW_SP_NEXTHOP_TYPE_ETH: | |
a5390278 | 2935 | err = mlxsw_sp_nexthop_update |
35225e47 PM |
2936 | (mlxsw_sp, adj_index, nh); |
2937 | break; | |
1012b9ac PM |
2938 | case MLXSW_SP_NEXTHOP_TYPE_IPIP: |
2939 | err = mlxsw_sp_nexthop_ipip_update | |
2940 | (mlxsw_sp, adj_index, nh); | |
2941 | break; | |
35225e47 | 2942 | } |
a7ff87ac JP |
2943 | if (err) |
2944 | return err; | |
2945 | nh->update = 0; | |
2946 | nh->offloaded = 1; | |
2947 | } | |
eb789980 | 2948 | adj_index += nh->num_adj_entries; |
a7ff87ac JP |
2949 | } |
2950 | return 0; | |
2951 | } | |
2952 | ||
1819ae3d IS |
2953 | static bool |
2954 | mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node, | |
2955 | const struct mlxsw_sp_fib_entry *fib_entry); | |
2956 | ||
a7ff87ac JP |
2957 | static int |
2958 | mlxsw_sp_nexthop_fib_entries_update(struct mlxsw_sp *mlxsw_sp, | |
2959 | struct mlxsw_sp_nexthop_group *nh_grp) | |
2960 | { | |
2961 | struct mlxsw_sp_fib_entry *fib_entry; | |
2962 | int err; | |
2963 | ||
2964 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
1819ae3d IS |
2965 | if (!mlxsw_sp_fib_node_entry_is_first(fib_entry->fib_node, |
2966 | fib_entry)) | |
2967 | continue; | |
a7ff87ac JP |
2968 | err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); |
2969 | if (err) | |
2970 | return err; | |
2971 | } | |
2972 | return 0; | |
2973 | } | |
2974 | ||
77d964e6 IS |
2975 | static void |
2976 | mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry, | |
2977 | enum mlxsw_reg_ralue_op op, int err); | |
2978 | ||
2979 | static void | |
2980 | mlxsw_sp_nexthop_fib_entries_refresh(struct mlxsw_sp_nexthop_group *nh_grp) | |
2981 | { | |
2982 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_WRITE; | |
2983 | struct mlxsw_sp_fib_entry *fib_entry; | |
2984 | ||
2985 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
2986 | if (!mlxsw_sp_fib_node_entry_is_first(fib_entry->fib_node, | |
2987 | fib_entry)) | |
2988 | continue; | |
2989 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0); | |
2990 | } | |
2991 | } | |
2992 | ||
425a08c6 IS |
2993 | static void mlxsw_sp_adj_grp_size_round_up(u16 *p_adj_grp_size) |
2994 | { | |
2995 | /* Valid sizes for an adjacency group are: | |
2996 | * 1-64, 512, 1024, 2048 and 4096. | |
2997 | */ | |
2998 | if (*p_adj_grp_size <= 64) | |
2999 | return; | |
3000 | else if (*p_adj_grp_size <= 512) | |
3001 | *p_adj_grp_size = 512; | |
3002 | else if (*p_adj_grp_size <= 1024) | |
3003 | *p_adj_grp_size = 1024; | |
3004 | else if (*p_adj_grp_size <= 2048) | |
3005 | *p_adj_grp_size = 2048; | |
3006 | else | |
3007 | *p_adj_grp_size = 4096; | |
3008 | } | |
3009 | ||
3010 | static void mlxsw_sp_adj_grp_size_round_down(u16 *p_adj_grp_size, | |
3011 | unsigned int alloc_size) | |
3012 | { | |
3013 | if (alloc_size >= 4096) | |
3014 | *p_adj_grp_size = 4096; | |
3015 | else if (alloc_size >= 2048) | |
3016 | *p_adj_grp_size = 2048; | |
3017 | else if (alloc_size >= 1024) | |
3018 | *p_adj_grp_size = 1024; | |
3019 | else if (alloc_size >= 512) | |
3020 | *p_adj_grp_size = 512; | |
3021 | } | |
3022 | ||
3023 | static int mlxsw_sp_fix_adj_grp_size(struct mlxsw_sp *mlxsw_sp, | |
3024 | u16 *p_adj_grp_size) | |
3025 | { | |
3026 | unsigned int alloc_size; | |
3027 | int err; | |
3028 | ||
3029 | /* Round up the requested group size to the next size supported | |
3030 | * by the device and make sure the request can be satisfied. | |
3031 | */ | |
3032 | mlxsw_sp_adj_grp_size_round_up(p_adj_grp_size); | |
3033 | err = mlxsw_sp_kvdl_alloc_size_query(mlxsw_sp, *p_adj_grp_size, | |
3034 | &alloc_size); | |
3035 | if (err) | |
3036 | return err; | |
3037 | /* It is possible the allocation results in more allocated | |
3038 | * entries than requested. Try to use as much of them as | |
3039 | * possible. | |
3040 | */ | |
3041 | mlxsw_sp_adj_grp_size_round_down(p_adj_grp_size, alloc_size); | |
3042 | ||
3043 | return 0; | |
3044 | } | |
3045 | ||
eb789980 IS |
3046 | static void |
3047 | mlxsw_sp_nexthop_group_normalize(struct mlxsw_sp_nexthop_group *nh_grp) | |
3048 | { | |
3049 | int i, g = 0, sum_norm_weight = 0; | |
3050 | struct mlxsw_sp_nexthop *nh; | |
3051 | ||
3052 | for (i = 0; i < nh_grp->count; i++) { | |
3053 | nh = &nh_grp->nexthops[i]; | |
3054 | ||
3055 | if (!nh->should_offload) | |
3056 | continue; | |
3057 | if (g > 0) | |
3058 | g = gcd(nh->nh_weight, g); | |
3059 | else | |
3060 | g = nh->nh_weight; | |
3061 | } | |
3062 | ||
3063 | for (i = 0; i < nh_grp->count; i++) { | |
3064 | nh = &nh_grp->nexthops[i]; | |
3065 | ||
3066 | if (!nh->should_offload) | |
3067 | continue; | |
3068 | nh->norm_nh_weight = nh->nh_weight / g; | |
3069 | sum_norm_weight += nh->norm_nh_weight; | |
3070 | } | |
3071 | ||
3072 | nh_grp->sum_norm_weight = sum_norm_weight; | |
3073 | } | |
3074 | ||
3075 | static void | |
3076 | mlxsw_sp_nexthop_group_rebalance(struct mlxsw_sp_nexthop_group *nh_grp) | |
3077 | { | |
3078 | int total = nh_grp->sum_norm_weight; | |
3079 | u16 ecmp_size = nh_grp->ecmp_size; | |
3080 | int i, weight = 0, lower_bound = 0; | |
3081 | ||
3082 | for (i = 0; i < nh_grp->count; i++) { | |
3083 | struct mlxsw_sp_nexthop *nh = &nh_grp->nexthops[i]; | |
3084 | int upper_bound; | |
3085 | ||
3086 | if (!nh->should_offload) | |
3087 | continue; | |
3088 | weight += nh->norm_nh_weight; | |
3089 | upper_bound = DIV_ROUND_CLOSEST(ecmp_size * weight, total); | |
3090 | nh->num_adj_entries = upper_bound - lower_bound; | |
3091 | lower_bound = upper_bound; | |
3092 | } | |
3093 | } | |
3094 | ||
a7ff87ac JP |
3095 | static void |
3096 | mlxsw_sp_nexthop_group_refresh(struct mlxsw_sp *mlxsw_sp, | |
3097 | struct mlxsw_sp_nexthop_group *nh_grp) | |
3098 | { | |
eb789980 | 3099 | u16 ecmp_size, old_ecmp_size; |
a7ff87ac JP |
3100 | struct mlxsw_sp_nexthop *nh; |
3101 | bool offload_change = false; | |
3102 | u32 adj_index; | |
a7ff87ac JP |
3103 | bool old_adj_index_valid; |
3104 | u32 old_adj_index; | |
a7ff87ac JP |
3105 | int i; |
3106 | int err; | |
3107 | ||
b3e8d1eb IS |
3108 | if (!nh_grp->gateway) { |
3109 | mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
3110 | return; | |
3111 | } | |
3112 | ||
a7ff87ac JP |
3113 | for (i = 0; i < nh_grp->count; i++) { |
3114 | nh = &nh_grp->nexthops[i]; | |
3115 | ||
56b8a9ed | 3116 | if (nh->should_offload != nh->offloaded) { |
a7ff87ac JP |
3117 | offload_change = true; |
3118 | if (nh->should_offload) | |
3119 | nh->update = 1; | |
3120 | } | |
a7ff87ac JP |
3121 | } |
3122 | if (!offload_change) { | |
3123 | /* Nothing was added or removed, so no need to reallocate. Just | |
3124 | * update MAC on existing adjacency indexes. | |
3125 | */ | |
35225e47 | 3126 | err = mlxsw_sp_nexthop_group_update(mlxsw_sp, nh_grp, false); |
a7ff87ac JP |
3127 | if (err) { |
3128 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
3129 | goto set_trap; | |
3130 | } | |
3131 | return; | |
3132 | } | |
eb789980 IS |
3133 | mlxsw_sp_nexthop_group_normalize(nh_grp); |
3134 | if (!nh_grp->sum_norm_weight) | |
a7ff87ac JP |
3135 | /* No neigh of this group is connected so we just set |
3136 | * the trap and let everthing flow through kernel. | |
3137 | */ | |
3138 | goto set_trap; | |
3139 | ||
eb789980 | 3140 | ecmp_size = nh_grp->sum_norm_weight; |
425a08c6 IS |
3141 | err = mlxsw_sp_fix_adj_grp_size(mlxsw_sp, &ecmp_size); |
3142 | if (err) | |
3143 | /* No valid allocation size available. */ | |
3144 | goto set_trap; | |
3145 | ||
13124443 AS |
3146 | err = mlxsw_sp_kvdl_alloc(mlxsw_sp, ecmp_size, &adj_index); |
3147 | if (err) { | |
a7ff87ac JP |
3148 | /* We ran out of KVD linear space, just set the |
3149 | * trap and let everything flow through kernel. | |
3150 | */ | |
3151 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to allocate KVD linear area for nexthop group.\n"); | |
3152 | goto set_trap; | |
3153 | } | |
a7ff87ac JP |
3154 | old_adj_index_valid = nh_grp->adj_index_valid; |
3155 | old_adj_index = nh_grp->adj_index; | |
3156 | old_ecmp_size = nh_grp->ecmp_size; | |
3157 | nh_grp->adj_index_valid = 1; | |
3158 | nh_grp->adj_index = adj_index; | |
3159 | nh_grp->ecmp_size = ecmp_size; | |
eb789980 | 3160 | mlxsw_sp_nexthop_group_rebalance(nh_grp); |
35225e47 | 3161 | err = mlxsw_sp_nexthop_group_update(mlxsw_sp, nh_grp, true); |
a7ff87ac JP |
3162 | if (err) { |
3163 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
3164 | goto set_trap; | |
3165 | } | |
3166 | ||
3167 | if (!old_adj_index_valid) { | |
3168 | /* The trap was set for fib entries, so we have to call | |
3169 | * fib entry update to unset it and use adjacency index. | |
3170 | */ | |
3171 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
3172 | if (err) { | |
3173 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to add adjacency index to fib entries.\n"); | |
3174 | goto set_trap; | |
3175 | } | |
3176 | return; | |
3177 | } | |
3178 | ||
3179 | err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, nh_grp, | |
3180 | old_adj_index, old_ecmp_size); | |
3181 | mlxsw_sp_kvdl_free(mlxsw_sp, old_adj_index); | |
3182 | if (err) { | |
3183 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to mass-update adjacency index for nexthop group.\n"); | |
3184 | goto set_trap; | |
3185 | } | |
77d964e6 IS |
3186 | |
3187 | /* Offload state within the group changed, so update the flags. */ | |
3188 | mlxsw_sp_nexthop_fib_entries_refresh(nh_grp); | |
3189 | ||
a7ff87ac JP |
3190 | return; |
3191 | ||
3192 | set_trap: | |
3193 | old_adj_index_valid = nh_grp->adj_index_valid; | |
3194 | nh_grp->adj_index_valid = 0; | |
3195 | for (i = 0; i < nh_grp->count; i++) { | |
3196 | nh = &nh_grp->nexthops[i]; | |
3197 | nh->offloaded = 0; | |
3198 | } | |
3199 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
3200 | if (err) | |
3201 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set traps for fib entries.\n"); | |
3202 | if (old_adj_index_valid) | |
3203 | mlxsw_sp_kvdl_free(mlxsw_sp, nh_grp->adj_index); | |
3204 | } | |
3205 | ||
3206 | static void __mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp_nexthop *nh, | |
3207 | bool removing) | |
3208 | { | |
213666a3 | 3209 | if (!removing) |
a7ff87ac | 3210 | nh->should_offload = 1; |
213666a3 | 3211 | else if (nh->offloaded) |
a7ff87ac JP |
3212 | nh->should_offload = 0; |
3213 | nh->update = 1; | |
3214 | } | |
3215 | ||
3216 | static void | |
3217 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
3218 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
3219 | bool removing) | |
3220 | { | |
3221 | struct mlxsw_sp_nexthop *nh; | |
3222 | ||
a7ff87ac JP |
3223 | list_for_each_entry(nh, &neigh_entry->nexthop_list, |
3224 | neigh_list_node) { | |
3225 | __mlxsw_sp_nexthop_neigh_update(nh, removing); | |
3226 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
3227 | } | |
a7ff87ac JP |
3228 | } |
3229 | ||
9665b745 | 3230 | static void mlxsw_sp_nexthop_rif_init(struct mlxsw_sp_nexthop *nh, |
bf95233e | 3231 | struct mlxsw_sp_rif *rif) |
9665b745 | 3232 | { |
bf95233e | 3233 | if (nh->rif) |
9665b745 IS |
3234 | return; |
3235 | ||
bf95233e AS |
3236 | nh->rif = rif; |
3237 | list_add(&nh->rif_list_node, &rif->nexthop_list); | |
9665b745 IS |
3238 | } |
3239 | ||
3240 | static void mlxsw_sp_nexthop_rif_fini(struct mlxsw_sp_nexthop *nh) | |
3241 | { | |
bf95233e | 3242 | if (!nh->rif) |
9665b745 IS |
3243 | return; |
3244 | ||
3245 | list_del(&nh->rif_list_node); | |
bf95233e | 3246 | nh->rif = NULL; |
9665b745 IS |
3247 | } |
3248 | ||
a8c97014 IS |
3249 | static int mlxsw_sp_nexthop_neigh_init(struct mlxsw_sp *mlxsw_sp, |
3250 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
3251 | { |
3252 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
a7ff87ac | 3253 | struct neighbour *n; |
93a87e5e | 3254 | u8 nud_state, dead; |
c53b8e1b IS |
3255 | int err; |
3256 | ||
ad178c8e | 3257 | if (!nh->nh_grp->gateway || nh->neigh_entry) |
b8399a1e IS |
3258 | return 0; |
3259 | ||
33b1341c | 3260 | /* Take a reference of neigh here ensuring that neigh would |
8de3c178 | 3261 | * not be destructed before the nexthop entry is finished. |
33b1341c | 3262 | * The reference is taken either in neigh_lookup() or |
fd76d910 | 3263 | * in neigh_create() in case n is not found. |
33b1341c | 3264 | */ |
58adf2c4 | 3265 | n = neigh_lookup(nh->nh_grp->neigh_tbl, &nh->gw_addr, nh->rif->dev); |
33b1341c | 3266 | if (!n) { |
58adf2c4 IS |
3267 | n = neigh_create(nh->nh_grp->neigh_tbl, &nh->gw_addr, |
3268 | nh->rif->dev); | |
a8c97014 IS |
3269 | if (IS_ERR(n)) |
3270 | return PTR_ERR(n); | |
a7ff87ac | 3271 | neigh_event_send(n, NULL); |
33b1341c JP |
3272 | } |
3273 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); | |
3274 | if (!neigh_entry) { | |
5c8802f1 IS |
3275 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); |
3276 | if (IS_ERR(neigh_entry)) { | |
c53b8e1b IS |
3277 | err = -EINVAL; |
3278 | goto err_neigh_entry_create; | |
5c8802f1 | 3279 | } |
a7ff87ac | 3280 | } |
b2157149 YG |
3281 | |
3282 | /* If that is the first nexthop connected to that neigh, add to | |
3283 | * nexthop_neighs_list | |
3284 | */ | |
3285 | if (list_empty(&neigh_entry->nexthop_list)) | |
3286 | list_add_tail(&neigh_entry->nexthop_neighs_list_node, | |
9011b677 | 3287 | &mlxsw_sp->router->nexthop_neighs_list); |
b2157149 | 3288 | |
a7ff87ac JP |
3289 | nh->neigh_entry = neigh_entry; |
3290 | list_add_tail(&nh->neigh_list_node, &neigh_entry->nexthop_list); | |
3291 | read_lock_bh(&n->lock); | |
3292 | nud_state = n->nud_state; | |
93a87e5e | 3293 | dead = n->dead; |
a7ff87ac | 3294 | read_unlock_bh(&n->lock); |
93a87e5e | 3295 | __mlxsw_sp_nexthop_neigh_update(nh, !(nud_state & NUD_VALID && !dead)); |
a7ff87ac JP |
3296 | |
3297 | return 0; | |
c53b8e1b IS |
3298 | |
3299 | err_neigh_entry_create: | |
3300 | neigh_release(n); | |
c53b8e1b | 3301 | return err; |
a7ff87ac JP |
3302 | } |
3303 | ||
a8c97014 IS |
3304 | static void mlxsw_sp_nexthop_neigh_fini(struct mlxsw_sp *mlxsw_sp, |
3305 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
3306 | { |
3307 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
a8c97014 | 3308 | struct neighbour *n; |
a7ff87ac | 3309 | |
b8399a1e | 3310 | if (!neigh_entry) |
a8c97014 IS |
3311 | return; |
3312 | n = neigh_entry->key.n; | |
b8399a1e | 3313 | |
58312125 | 3314 | __mlxsw_sp_nexthop_neigh_update(nh, true); |
a7ff87ac | 3315 | list_del(&nh->neigh_list_node); |
e58be79e | 3316 | nh->neigh_entry = NULL; |
b2157149 YG |
3317 | |
3318 | /* If that is the last nexthop connected to that neigh, remove from | |
3319 | * nexthop_neighs_list | |
3320 | */ | |
e58be79e IS |
3321 | if (list_empty(&neigh_entry->nexthop_list)) |
3322 | list_del(&neigh_entry->nexthop_neighs_list_node); | |
b2157149 | 3323 | |
5c8802f1 IS |
3324 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) |
3325 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
3326 | ||
3327 | neigh_release(n); | |
a8c97014 | 3328 | } |
c53b8e1b | 3329 | |
44b0fff1 PM |
3330 | static bool mlxsw_sp_ipip_netdev_ul_up(struct net_device *ol_dev) |
3331 | { | |
3332 | struct net_device *ul_dev = __mlxsw_sp_ipip_netdev_ul_dev_get(ol_dev); | |
3333 | ||
3334 | return ul_dev ? (ul_dev->flags & IFF_UP) : true; | |
3335 | } | |
3336 | ||
1012b9ac | 3337 | static int mlxsw_sp_nexthop_ipip_init(struct mlxsw_sp *mlxsw_sp, |
1012b9ac PM |
3338 | struct mlxsw_sp_nexthop *nh, |
3339 | struct net_device *ol_dev) | |
3340 | { | |
44b0fff1 PM |
3341 | bool removing; |
3342 | ||
1012b9ac PM |
3343 | if (!nh->nh_grp->gateway || nh->ipip_entry) |
3344 | return 0; | |
3345 | ||
4cccb737 PM |
3346 | nh->ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); |
3347 | if (!nh->ipip_entry) | |
3348 | return -ENOENT; | |
1012b9ac | 3349 | |
44b0fff1 PM |
3350 | removing = !mlxsw_sp_ipip_netdev_ul_up(ol_dev); |
3351 | __mlxsw_sp_nexthop_neigh_update(nh, removing); | |
1012b9ac PM |
3352 | return 0; |
3353 | } | |
3354 | ||
3355 | static void mlxsw_sp_nexthop_ipip_fini(struct mlxsw_sp *mlxsw_sp, | |
3356 | struct mlxsw_sp_nexthop *nh) | |
3357 | { | |
3358 | struct mlxsw_sp_ipip_entry *ipip_entry = nh->ipip_entry; | |
3359 | ||
3360 | if (!ipip_entry) | |
3361 | return; | |
3362 | ||
3363 | __mlxsw_sp_nexthop_neigh_update(nh, true); | |
1012b9ac PM |
3364 | nh->ipip_entry = NULL; |
3365 | } | |
3366 | ||
3367 | static bool mlxsw_sp_nexthop4_ipip_type(const struct mlxsw_sp *mlxsw_sp, | |
3368 | const struct fib_nh *fib_nh, | |
3369 | enum mlxsw_sp_ipip_type *p_ipipt) | |
3370 | { | |
3371 | struct net_device *dev = fib_nh->nh_dev; | |
3372 | ||
3373 | return dev && | |
3374 | fib_nh->nh_parent->fib_type == RTN_UNICAST && | |
3375 | mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, p_ipipt); | |
3376 | } | |
3377 | ||
35225e47 PM |
3378 | static void mlxsw_sp_nexthop_type_fini(struct mlxsw_sp *mlxsw_sp, |
3379 | struct mlxsw_sp_nexthop *nh) | |
3380 | { | |
3381 | switch (nh->type) { | |
3382 | case MLXSW_SP_NEXTHOP_TYPE_ETH: | |
3383 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
3384 | mlxsw_sp_nexthop_rif_fini(nh); | |
3385 | break; | |
1012b9ac | 3386 | case MLXSW_SP_NEXTHOP_TYPE_IPIP: |
de0f43c0 | 3387 | mlxsw_sp_nexthop_rif_fini(nh); |
1012b9ac PM |
3388 | mlxsw_sp_nexthop_ipip_fini(mlxsw_sp, nh); |
3389 | break; | |
35225e47 PM |
3390 | } |
3391 | } | |
3392 | ||
3393 | static int mlxsw_sp_nexthop4_type_init(struct mlxsw_sp *mlxsw_sp, | |
3394 | struct mlxsw_sp_nexthop *nh, | |
3395 | struct fib_nh *fib_nh) | |
3396 | { | |
1012b9ac | 3397 | struct mlxsw_sp_router *router = mlxsw_sp->router; |
35225e47 | 3398 | struct net_device *dev = fib_nh->nh_dev; |
1012b9ac | 3399 | enum mlxsw_sp_ipip_type ipipt; |
35225e47 PM |
3400 | struct mlxsw_sp_rif *rif; |
3401 | int err; | |
3402 | ||
1012b9ac PM |
3403 | if (mlxsw_sp_nexthop4_ipip_type(mlxsw_sp, fib_nh, &ipipt) && |
3404 | router->ipip_ops_arr[ipipt]->can_offload(mlxsw_sp, dev, | |
3405 | MLXSW_SP_L3_PROTO_IPV4)) { | |
3406 | nh->type = MLXSW_SP_NEXTHOP_TYPE_IPIP; | |
4cccb737 | 3407 | err = mlxsw_sp_nexthop_ipip_init(mlxsw_sp, nh, dev); |
de0f43c0 PM |
3408 | if (err) |
3409 | return err; | |
3410 | mlxsw_sp_nexthop_rif_init(nh, &nh->ipip_entry->ol_lb->common); | |
3411 | return 0; | |
1012b9ac PM |
3412 | } |
3413 | ||
35225e47 PM |
3414 | nh->type = MLXSW_SP_NEXTHOP_TYPE_ETH; |
3415 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
3416 | if (!rif) | |
3417 | return 0; | |
3418 | ||
3419 | mlxsw_sp_nexthop_rif_init(nh, rif); | |
3420 | err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); | |
3421 | if (err) | |
3422 | goto err_neigh_init; | |
3423 | ||
3424 | return 0; | |
3425 | ||
3426 | err_neigh_init: | |
3427 | mlxsw_sp_nexthop_rif_fini(nh); | |
3428 | return err; | |
3429 | } | |
3430 | ||
3431 | static void mlxsw_sp_nexthop4_type_fini(struct mlxsw_sp *mlxsw_sp, | |
3432 | struct mlxsw_sp_nexthop *nh) | |
3433 | { | |
3434 | mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh); | |
3435 | } | |
3436 | ||
0e6ea2a4 IS |
3437 | static int mlxsw_sp_nexthop4_init(struct mlxsw_sp *mlxsw_sp, |
3438 | struct mlxsw_sp_nexthop_group *nh_grp, | |
3439 | struct mlxsw_sp_nexthop *nh, | |
3440 | struct fib_nh *fib_nh) | |
a8c97014 IS |
3441 | { |
3442 | struct net_device *dev = fib_nh->nh_dev; | |
df6dd79b | 3443 | struct in_device *in_dev; |
a8c97014 IS |
3444 | int err; |
3445 | ||
3446 | nh->nh_grp = nh_grp; | |
3447 | nh->key.fib_nh = fib_nh; | |
408bd946 IS |
3448 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
3449 | nh->nh_weight = fib_nh->nh_weight; | |
3450 | #else | |
3451 | nh->nh_weight = 1; | |
3452 | #endif | |
58adf2c4 | 3453 | memcpy(&nh->gw_addr, &fib_nh->nh_gw, sizeof(fib_nh->nh_gw)); |
a8c97014 IS |
3454 | err = mlxsw_sp_nexthop_insert(mlxsw_sp, nh); |
3455 | if (err) | |
3456 | return err; | |
3457 | ||
a5390278 | 3458 | mlxsw_sp_nexthop_counter_alloc(mlxsw_sp, nh); |
dbe4598c AS |
3459 | list_add_tail(&nh->router_list_node, &mlxsw_sp->router->nexthop_list); |
3460 | ||
97989ee0 IS |
3461 | if (!dev) |
3462 | return 0; | |
3463 | ||
df6dd79b IS |
3464 | in_dev = __in_dev_get_rtnl(dev); |
3465 | if (in_dev && IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) && | |
3466 | fib_nh->nh_flags & RTNH_F_LINKDOWN) | |
3467 | return 0; | |
3468 | ||
35225e47 | 3469 | err = mlxsw_sp_nexthop4_type_init(mlxsw_sp, nh, fib_nh); |
a8c97014 IS |
3470 | if (err) |
3471 | goto err_nexthop_neigh_init; | |
3472 | ||
3473 | return 0; | |
3474 | ||
3475 | err_nexthop_neigh_init: | |
3476 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); | |
3477 | return err; | |
3478 | } | |
3479 | ||
0e6ea2a4 IS |
3480 | static void mlxsw_sp_nexthop4_fini(struct mlxsw_sp *mlxsw_sp, |
3481 | struct mlxsw_sp_nexthop *nh) | |
a8c97014 | 3482 | { |
35225e47 | 3483 | mlxsw_sp_nexthop4_type_fini(mlxsw_sp, nh); |
dbe4598c | 3484 | list_del(&nh->router_list_node); |
a5390278 | 3485 | mlxsw_sp_nexthop_counter_free(mlxsw_sp, nh); |
c53b8e1b | 3486 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); |
a7ff87ac JP |
3487 | } |
3488 | ||
0e6ea2a4 IS |
3489 | static void mlxsw_sp_nexthop4_event(struct mlxsw_sp *mlxsw_sp, |
3490 | unsigned long event, struct fib_nh *fib_nh) | |
ad178c8e IS |
3491 | { |
3492 | struct mlxsw_sp_nexthop_key key; | |
3493 | struct mlxsw_sp_nexthop *nh; | |
ad178c8e | 3494 | |
9011b677 | 3495 | if (mlxsw_sp->router->aborted) |
ad178c8e IS |
3496 | return; |
3497 | ||
3498 | key.fib_nh = fib_nh; | |
3499 | nh = mlxsw_sp_nexthop_lookup(mlxsw_sp, key); | |
3500 | if (WARN_ON_ONCE(!nh)) | |
3501 | return; | |
3502 | ||
ad178c8e IS |
3503 | switch (event) { |
3504 | case FIB_EVENT_NH_ADD: | |
35225e47 | 3505 | mlxsw_sp_nexthop4_type_init(mlxsw_sp, nh, fib_nh); |
ad178c8e IS |
3506 | break; |
3507 | case FIB_EVENT_NH_DEL: | |
35225e47 | 3508 | mlxsw_sp_nexthop4_type_fini(mlxsw_sp, nh); |
ad178c8e IS |
3509 | break; |
3510 | } | |
3511 | ||
3512 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
3513 | } | |
3514 | ||
0c5f1cd5 PM |
3515 | static void mlxsw_sp_nexthop_rif_update(struct mlxsw_sp *mlxsw_sp, |
3516 | struct mlxsw_sp_rif *rif) | |
3517 | { | |
3518 | struct mlxsw_sp_nexthop *nh; | |
44b0fff1 | 3519 | bool removing; |
0c5f1cd5 PM |
3520 | |
3521 | list_for_each_entry(nh, &rif->nexthop_list, rif_list_node) { | |
44b0fff1 PM |
3522 | switch (nh->type) { |
3523 | case MLXSW_SP_NEXTHOP_TYPE_ETH: | |
3524 | removing = false; | |
3525 | break; | |
3526 | case MLXSW_SP_NEXTHOP_TYPE_IPIP: | |
3527 | removing = !mlxsw_sp_ipip_netdev_ul_up(rif->dev); | |
3528 | break; | |
3529 | default: | |
3530 | WARN_ON(1); | |
3531 | continue; | |
3532 | } | |
3533 | ||
3534 | __mlxsw_sp_nexthop_neigh_update(nh, removing); | |
0c5f1cd5 PM |
3535 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); |
3536 | } | |
3537 | } | |
3538 | ||
9665b745 | 3539 | static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, |
bf95233e | 3540 | struct mlxsw_sp_rif *rif) |
9665b745 IS |
3541 | { |
3542 | struct mlxsw_sp_nexthop *nh, *tmp; | |
3543 | ||
bf95233e | 3544 | list_for_each_entry_safe(nh, tmp, &rif->nexthop_list, rif_list_node) { |
35225e47 | 3545 | mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh); |
9665b745 IS |
3546 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); |
3547 | } | |
3548 | } | |
3549 | ||
9b01451a PM |
3550 | static bool mlxsw_sp_fi_is_gateway(const struct mlxsw_sp *mlxsw_sp, |
3551 | const struct fib_info *fi) | |
3552 | { | |
1012b9ac PM |
3553 | return fi->fib_nh->nh_scope == RT_SCOPE_LINK || |
3554 | mlxsw_sp_nexthop4_ipip_type(mlxsw_sp, fi->fib_nh, NULL); | |
9b01451a PM |
3555 | } |
3556 | ||
a7ff87ac | 3557 | static struct mlxsw_sp_nexthop_group * |
0e6ea2a4 | 3558 | mlxsw_sp_nexthop4_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi) |
a7ff87ac JP |
3559 | { |
3560 | struct mlxsw_sp_nexthop_group *nh_grp; | |
3561 | struct mlxsw_sp_nexthop *nh; | |
3562 | struct fib_nh *fib_nh; | |
3563 | size_t alloc_size; | |
3564 | int i; | |
3565 | int err; | |
3566 | ||
3567 | alloc_size = sizeof(*nh_grp) + | |
3568 | fi->fib_nhs * sizeof(struct mlxsw_sp_nexthop); | |
3569 | nh_grp = kzalloc(alloc_size, GFP_KERNEL); | |
3570 | if (!nh_grp) | |
3571 | return ERR_PTR(-ENOMEM); | |
ba31d366 | 3572 | nh_grp->priv = fi; |
a7ff87ac | 3573 | INIT_LIST_HEAD(&nh_grp->fib_list); |
58adf2c4 IS |
3574 | nh_grp->neigh_tbl = &arp_tbl; |
3575 | ||
9b01451a | 3576 | nh_grp->gateway = mlxsw_sp_fi_is_gateway(mlxsw_sp, fi); |
a7ff87ac | 3577 | nh_grp->count = fi->fib_nhs; |
7387dbbc | 3578 | fib_info_hold(fi); |
a7ff87ac JP |
3579 | for (i = 0; i < nh_grp->count; i++) { |
3580 | nh = &nh_grp->nexthops[i]; | |
3581 | fib_nh = &fi->fib_nh[i]; | |
0e6ea2a4 | 3582 | err = mlxsw_sp_nexthop4_init(mlxsw_sp, nh_grp, nh, fib_nh); |
a7ff87ac | 3583 | if (err) |
0e6ea2a4 | 3584 | goto err_nexthop4_init; |
a7ff87ac | 3585 | } |
e9ad5e7d IS |
3586 | err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); |
3587 | if (err) | |
3588 | goto err_nexthop_group_insert; | |
a7ff87ac JP |
3589 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
3590 | return nh_grp; | |
3591 | ||
e9ad5e7d | 3592 | err_nexthop_group_insert: |
0e6ea2a4 | 3593 | err_nexthop4_init: |
df6dd79b IS |
3594 | for (i--; i >= 0; i--) { |
3595 | nh = &nh_grp->nexthops[i]; | |
0e6ea2a4 | 3596 | mlxsw_sp_nexthop4_fini(mlxsw_sp, nh); |
df6dd79b | 3597 | } |
ba31d366 | 3598 | fib_info_put(fi); |
a7ff87ac JP |
3599 | kfree(nh_grp); |
3600 | return ERR_PTR(err); | |
3601 | } | |
3602 | ||
3603 | static void | |
0e6ea2a4 IS |
3604 | mlxsw_sp_nexthop4_group_destroy(struct mlxsw_sp *mlxsw_sp, |
3605 | struct mlxsw_sp_nexthop_group *nh_grp) | |
a7ff87ac JP |
3606 | { |
3607 | struct mlxsw_sp_nexthop *nh; | |
3608 | int i; | |
3609 | ||
e9ad5e7d | 3610 | mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); |
a7ff87ac JP |
3611 | for (i = 0; i < nh_grp->count; i++) { |
3612 | nh = &nh_grp->nexthops[i]; | |
0e6ea2a4 | 3613 | mlxsw_sp_nexthop4_fini(mlxsw_sp, nh); |
a7ff87ac | 3614 | } |
58312125 IS |
3615 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
3616 | WARN_ON_ONCE(nh_grp->adj_index_valid); | |
ba31d366 | 3617 | fib_info_put(mlxsw_sp_nexthop4_group_fi(nh_grp)); |
a7ff87ac JP |
3618 | kfree(nh_grp); |
3619 | } | |
3620 | ||
0e6ea2a4 IS |
3621 | static int mlxsw_sp_nexthop4_group_get(struct mlxsw_sp *mlxsw_sp, |
3622 | struct mlxsw_sp_fib_entry *fib_entry, | |
3623 | struct fib_info *fi) | |
a7ff87ac JP |
3624 | { |
3625 | struct mlxsw_sp_nexthop_group *nh_grp; | |
3626 | ||
ba31d366 | 3627 | nh_grp = mlxsw_sp_nexthop4_group_lookup(mlxsw_sp, fi); |
a7ff87ac | 3628 | if (!nh_grp) { |
0e6ea2a4 | 3629 | nh_grp = mlxsw_sp_nexthop4_group_create(mlxsw_sp, fi); |
a7ff87ac JP |
3630 | if (IS_ERR(nh_grp)) |
3631 | return PTR_ERR(nh_grp); | |
3632 | } | |
3633 | list_add_tail(&fib_entry->nexthop_group_node, &nh_grp->fib_list); | |
3634 | fib_entry->nh_group = nh_grp; | |
3635 | return 0; | |
3636 | } | |
3637 | ||
0e6ea2a4 IS |
3638 | static void mlxsw_sp_nexthop4_group_put(struct mlxsw_sp *mlxsw_sp, |
3639 | struct mlxsw_sp_fib_entry *fib_entry) | |
a7ff87ac JP |
3640 | { |
3641 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
3642 | ||
3643 | list_del(&fib_entry->nexthop_group_node); | |
3644 | if (!list_empty(&nh_grp->fib_list)) | |
3645 | return; | |
0e6ea2a4 | 3646 | mlxsw_sp_nexthop4_group_destroy(mlxsw_sp, nh_grp); |
a7ff87ac JP |
3647 | } |
3648 | ||
4f1c7f1f IS |
3649 | static bool |
3650 | mlxsw_sp_fib4_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) | |
3651 | { | |
3652 | struct mlxsw_sp_fib4_entry *fib4_entry; | |
3653 | ||
3654 | fib4_entry = container_of(fib_entry, struct mlxsw_sp_fib4_entry, | |
3655 | common); | |
3656 | return !fib4_entry->tos; | |
3657 | } | |
3658 | ||
013b20f9 IS |
3659 | static bool |
3660 | mlxsw_sp_fib_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) | |
3661 | { | |
3662 | struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group; | |
3663 | ||
4f1c7f1f IS |
3664 | switch (fib_entry->fib_node->fib->proto) { |
3665 | case MLXSW_SP_L3_PROTO_IPV4: | |
3666 | if (!mlxsw_sp_fib4_entry_should_offload(fib_entry)) | |
3667 | return false; | |
3668 | break; | |
3669 | case MLXSW_SP_L3_PROTO_IPV6: | |
3670 | break; | |
3671 | } | |
9aecce1c | 3672 | |
013b20f9 IS |
3673 | switch (fib_entry->type) { |
3674 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
3675 | return !!nh_group->adj_index_valid; | |
3676 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: | |
70ad3506 | 3677 | return !!nh_group->nh_rif; |
4607f6d2 PM |
3678 | case MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP: |
3679 | return true; | |
013b20f9 IS |
3680 | default: |
3681 | return false; | |
3682 | } | |
3683 | } | |
3684 | ||
428b851f IS |
3685 | static struct mlxsw_sp_nexthop * |
3686 | mlxsw_sp_rt6_nexthop(struct mlxsw_sp_nexthop_group *nh_grp, | |
3687 | const struct mlxsw_sp_rt6 *mlxsw_sp_rt6) | |
3688 | { | |
3689 | int i; | |
3690 | ||
3691 | for (i = 0; i < nh_grp->count; i++) { | |
3692 | struct mlxsw_sp_nexthop *nh = &nh_grp->nexthops[i]; | |
3693 | struct rt6_info *rt = mlxsw_sp_rt6->rt; | |
3694 | ||
3695 | if (nh->rif && nh->rif->dev == rt->dst.dev && | |
3696 | ipv6_addr_equal((const struct in6_addr *) &nh->gw_addr, | |
3697 | &rt->rt6i_gateway)) | |
3698 | return nh; | |
3699 | continue; | |
3700 | } | |
3701 | ||
3702 | return NULL; | |
3703 | } | |
3704 | ||
3984d1a8 IS |
3705 | static void |
3706 | mlxsw_sp_fib4_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) | |
3707 | { | |
3708 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
3709 | int i; | |
3710 | ||
4607f6d2 PM |
3711 | if (fib_entry->type == MLXSW_SP_FIB_ENTRY_TYPE_LOCAL || |
3712 | fib_entry->type == MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP) { | |
3984d1a8 IS |
3713 | nh_grp->nexthops->key.fib_nh->nh_flags |= RTNH_F_OFFLOAD; |
3714 | return; | |
3715 | } | |
3716 | ||
3717 | for (i = 0; i < nh_grp->count; i++) { | |
3718 | struct mlxsw_sp_nexthop *nh = &nh_grp->nexthops[i]; | |
3719 | ||
3720 | if (nh->offloaded) | |
3721 | nh->key.fib_nh->nh_flags |= RTNH_F_OFFLOAD; | |
3722 | else | |
3723 | nh->key.fib_nh->nh_flags &= ~RTNH_F_OFFLOAD; | |
3724 | } | |
3725 | } | |
3726 | ||
3727 | static void | |
3728 | mlxsw_sp_fib4_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
3729 | { | |
3730 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
3731 | int i; | |
3732 | ||
3733 | for (i = 0; i < nh_grp->count; i++) { | |
3734 | struct mlxsw_sp_nexthop *nh = &nh_grp->nexthops[i]; | |
3735 | ||
3736 | nh->key.fib_nh->nh_flags &= ~RTNH_F_OFFLOAD; | |
3737 | } | |
3738 | } | |
3739 | ||
428b851f IS |
3740 | static void |
3741 | mlxsw_sp_fib6_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) | |
3742 | { | |
3743 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
3744 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
3745 | ||
3746 | fib6_entry = container_of(fib_entry, struct mlxsw_sp_fib6_entry, | |
3747 | common); | |
3748 | ||
3749 | if (fib_entry->type == MLXSW_SP_FIB_ENTRY_TYPE_LOCAL) { | |
3750 | list_first_entry(&fib6_entry->rt6_list, struct mlxsw_sp_rt6, | |
fe400799 | 3751 | list)->rt->rt6i_nh_flags |= RTNH_F_OFFLOAD; |
428b851f IS |
3752 | return; |
3753 | } | |
3754 | ||
3755 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
3756 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
3757 | struct mlxsw_sp_nexthop *nh; | |
3758 | ||
3759 | nh = mlxsw_sp_rt6_nexthop(nh_grp, mlxsw_sp_rt6); | |
3760 | if (nh && nh->offloaded) | |
fe400799 | 3761 | mlxsw_sp_rt6->rt->rt6i_nh_flags |= RTNH_F_OFFLOAD; |
428b851f | 3762 | else |
fe400799 | 3763 | mlxsw_sp_rt6->rt->rt6i_nh_flags &= ~RTNH_F_OFFLOAD; |
428b851f IS |
3764 | } |
3765 | } | |
3766 | ||
3767 | static void | |
3768 | mlxsw_sp_fib6_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
3769 | { | |
3770 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
3771 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
3772 | ||
3773 | fib6_entry = container_of(fib_entry, struct mlxsw_sp_fib6_entry, | |
3774 | common); | |
3775 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
3776 | struct rt6_info *rt = mlxsw_sp_rt6->rt; | |
3777 | ||
fe400799 | 3778 | rt->rt6i_nh_flags &= ~RTNH_F_OFFLOAD; |
428b851f IS |
3779 | } |
3780 | } | |
3781 | ||
013b20f9 IS |
3782 | static void mlxsw_sp_fib_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) |
3783 | { | |
76610ebb | 3784 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 | 3785 | case MLXSW_SP_L3_PROTO_IPV4: |
3984d1a8 | 3786 | mlxsw_sp_fib4_entry_offload_set(fib_entry); |
013b20f9 IS |
3787 | break; |
3788 | case MLXSW_SP_L3_PROTO_IPV6: | |
428b851f IS |
3789 | mlxsw_sp_fib6_entry_offload_set(fib_entry); |
3790 | break; | |
013b20f9 IS |
3791 | } |
3792 | } | |
3793 | ||
3794 | static void | |
3795 | mlxsw_sp_fib_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
3796 | { | |
76610ebb | 3797 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 | 3798 | case MLXSW_SP_L3_PROTO_IPV4: |
3984d1a8 | 3799 | mlxsw_sp_fib4_entry_offload_unset(fib_entry); |
013b20f9 IS |
3800 | break; |
3801 | case MLXSW_SP_L3_PROTO_IPV6: | |
428b851f IS |
3802 | mlxsw_sp_fib6_entry_offload_unset(fib_entry); |
3803 | break; | |
013b20f9 | 3804 | } |
013b20f9 IS |
3805 | } |
3806 | ||
3807 | static void | |
3808 | mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry, | |
3809 | enum mlxsw_reg_ralue_op op, int err) | |
3810 | { | |
3811 | switch (op) { | |
3812 | case MLXSW_REG_RALUE_OP_WRITE_DELETE: | |
013b20f9 IS |
3813 | return mlxsw_sp_fib_entry_offload_unset(fib_entry); |
3814 | case MLXSW_REG_RALUE_OP_WRITE_WRITE: | |
3815 | if (err) | |
3816 | return; | |
1353ee70 | 3817 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) |
013b20f9 | 3818 | mlxsw_sp_fib_entry_offload_set(fib_entry); |
85f44a15 | 3819 | else |
013b20f9 IS |
3820 | mlxsw_sp_fib_entry_offload_unset(fib_entry); |
3821 | return; | |
3822 | default: | |
3823 | return; | |
3824 | } | |
3825 | } | |
3826 | ||
9dbf4d76 IS |
3827 | static void |
3828 | mlxsw_sp_fib_entry_ralue_pack(char *ralue_pl, | |
3829 | const struct mlxsw_sp_fib_entry *fib_entry, | |
3830 | enum mlxsw_reg_ralue_op op) | |
a7ff87ac | 3831 | { |
76610ebb | 3832 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
9dbf4d76 IS |
3833 | enum mlxsw_reg_ralxx_protocol proto; |
3834 | u32 *p_dip; | |
3835 | ||
3836 | proto = (enum mlxsw_reg_ralxx_protocol) fib->proto; | |
3837 | ||
3838 | switch (fib->proto) { | |
3839 | case MLXSW_SP_L3_PROTO_IPV4: | |
3840 | p_dip = (u32 *) fib_entry->fib_node->key.addr; | |
3841 | mlxsw_reg_ralue_pack4(ralue_pl, proto, op, fib->vr->id, | |
3842 | fib_entry->fib_node->key.prefix_len, | |
3843 | *p_dip); | |
3844 | break; | |
3845 | case MLXSW_SP_L3_PROTO_IPV6: | |
3846 | mlxsw_reg_ralue_pack6(ralue_pl, proto, op, fib->vr->id, | |
3847 | fib_entry->fib_node->key.prefix_len, | |
3848 | fib_entry->fib_node->key.addr); | |
3849 | break; | |
3850 | } | |
3851 | } | |
3852 | ||
3853 | static int mlxsw_sp_fib_entry_op_remote(struct mlxsw_sp *mlxsw_sp, | |
3854 | struct mlxsw_sp_fib_entry *fib_entry, | |
3855 | enum mlxsw_reg_ralue_op op) | |
3856 | { | |
3857 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
a7ff87ac JP |
3858 | enum mlxsw_reg_ralue_trap_action trap_action; |
3859 | u16 trap_id = 0; | |
3860 | u32 adjacency_index = 0; | |
3861 | u16 ecmp_size = 0; | |
3862 | ||
3863 | /* In case the nexthop group adjacency index is valid, use it | |
3864 | * with provided ECMP size. Otherwise, setup trap and pass | |
3865 | * traffic to kernel. | |
3866 | */ | |
4b411477 | 3867 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { |
a7ff87ac JP |
3868 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; |
3869 | adjacency_index = fib_entry->nh_group->adj_index; | |
3870 | ecmp_size = fib_entry->nh_group->ecmp_size; | |
3871 | } else { | |
3872 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
3873 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
3874 | } | |
3875 | ||
9dbf4d76 | 3876 | mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); |
a7ff87ac JP |
3877 | mlxsw_reg_ralue_act_remote_pack(ralue_pl, trap_action, trap_id, |
3878 | adjacency_index, ecmp_size); | |
3879 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
3880 | } | |
3881 | ||
9dbf4d76 IS |
3882 | static int mlxsw_sp_fib_entry_op_local(struct mlxsw_sp *mlxsw_sp, |
3883 | struct mlxsw_sp_fib_entry *fib_entry, | |
3884 | enum mlxsw_reg_ralue_op op) | |
61c503f9 | 3885 | { |
bf95233e | 3886 | struct mlxsw_sp_rif *rif = fib_entry->nh_group->nh_rif; |
70ad3506 | 3887 | enum mlxsw_reg_ralue_trap_action trap_action; |
61c503f9 | 3888 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
70ad3506 | 3889 | u16 trap_id = 0; |
bf95233e | 3890 | u16 rif_index = 0; |
70ad3506 IS |
3891 | |
3892 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { | |
3893 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; | |
bf95233e | 3894 | rif_index = rif->rif_index; |
70ad3506 IS |
3895 | } else { |
3896 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
3897 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
3898 | } | |
61c503f9 | 3899 | |
9dbf4d76 | 3900 | mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); |
bf95233e AS |
3901 | mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id, |
3902 | rif_index); | |
61c503f9 JP |
3903 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); |
3904 | } | |
3905 | ||
9dbf4d76 IS |
3906 | static int mlxsw_sp_fib_entry_op_trap(struct mlxsw_sp *mlxsw_sp, |
3907 | struct mlxsw_sp_fib_entry *fib_entry, | |
3908 | enum mlxsw_reg_ralue_op op) | |
61c503f9 JP |
3909 | { |
3910 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
61c503f9 | 3911 | |
9dbf4d76 | 3912 | mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); |
61c503f9 JP |
3913 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); |
3914 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
3915 | } | |
3916 | ||
4607f6d2 PM |
3917 | static int |
3918 | mlxsw_sp_fib_entry_op_ipip_decap(struct mlxsw_sp *mlxsw_sp, | |
3919 | struct mlxsw_sp_fib_entry *fib_entry, | |
3920 | enum mlxsw_reg_ralue_op op) | |
3921 | { | |
3922 | struct mlxsw_sp_ipip_entry *ipip_entry = fib_entry->decap.ipip_entry; | |
3923 | const struct mlxsw_sp_ipip_ops *ipip_ops; | |
3924 | ||
3925 | if (WARN_ON(!ipip_entry)) | |
3926 | return -EINVAL; | |
3927 | ||
3928 | ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt]; | |
3929 | return ipip_ops->fib_entry_op(mlxsw_sp, ipip_entry, op, | |
3930 | fib_entry->decap.tunnel_index); | |
3931 | } | |
3932 | ||
9dbf4d76 IS |
3933 | static int __mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, |
3934 | struct mlxsw_sp_fib_entry *fib_entry, | |
3935 | enum mlxsw_reg_ralue_op op) | |
61c503f9 JP |
3936 | { |
3937 | switch (fib_entry->type) { | |
3938 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
9dbf4d76 | 3939 | return mlxsw_sp_fib_entry_op_remote(mlxsw_sp, fib_entry, op); |
61c503f9 | 3940 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: |
9dbf4d76 | 3941 | return mlxsw_sp_fib_entry_op_local(mlxsw_sp, fib_entry, op); |
61c503f9 | 3942 | case MLXSW_SP_FIB_ENTRY_TYPE_TRAP: |
9dbf4d76 | 3943 | return mlxsw_sp_fib_entry_op_trap(mlxsw_sp, fib_entry, op); |
4607f6d2 PM |
3944 | case MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP: |
3945 | return mlxsw_sp_fib_entry_op_ipip_decap(mlxsw_sp, | |
3946 | fib_entry, op); | |
61c503f9 JP |
3947 | } |
3948 | return -EINVAL; | |
3949 | } | |
3950 | ||
3951 | static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, | |
3952 | struct mlxsw_sp_fib_entry *fib_entry, | |
3953 | enum mlxsw_reg_ralue_op op) | |
3954 | { | |
9dbf4d76 | 3955 | int err = __mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, op); |
013b20f9 | 3956 | |
013b20f9 | 3957 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, err); |
9dbf4d76 | 3958 | |
013b20f9 | 3959 | return err; |
61c503f9 JP |
3960 | } |
3961 | ||
3962 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
3963 | struct mlxsw_sp_fib_entry *fib_entry) | |
3964 | { | |
7146da31 JP |
3965 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, |
3966 | MLXSW_REG_RALUE_OP_WRITE_WRITE); | |
61c503f9 JP |
3967 | } |
3968 | ||
3969 | static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp, | |
3970 | struct mlxsw_sp_fib_entry *fib_entry) | |
3971 | { | |
3972 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, | |
3973 | MLXSW_REG_RALUE_OP_WRITE_DELETE); | |
3974 | } | |
3975 | ||
61c503f9 | 3976 | static int |
013b20f9 IS |
3977 | mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp, |
3978 | const struct fib_entry_notifier_info *fen_info, | |
3979 | struct mlxsw_sp_fib_entry *fib_entry) | |
61c503f9 | 3980 | { |
4607f6d2 PM |
3981 | union mlxsw_sp_l3addr dip = { .addr4 = htonl(fen_info->dst) }; |
3982 | struct net_device *dev = fen_info->fi->fib_dev; | |
3983 | struct mlxsw_sp_ipip_entry *ipip_entry; | |
b45f64d1 | 3984 | struct fib_info *fi = fen_info->fi; |
61c503f9 | 3985 | |
97989ee0 | 3986 | switch (fen_info->type) { |
97989ee0 | 3987 | case RTN_LOCAL: |
4607f6d2 PM |
3988 | ipip_entry = mlxsw_sp_ipip_entry_find_by_decap(mlxsw_sp, dev, |
3989 | MLXSW_SP_L3_PROTO_IPV4, dip); | |
3990 | if (ipip_entry) { | |
3991 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP; | |
3992 | return mlxsw_sp_fib_entry_decap_init(mlxsw_sp, | |
3993 | fib_entry, | |
3994 | ipip_entry); | |
3995 | } | |
3996 | /* fall through */ | |
3997 | case RTN_BROADCAST: | |
61c503f9 JP |
3998 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; |
3999 | return 0; | |
97989ee0 IS |
4000 | case RTN_UNREACHABLE: /* fall through */ |
4001 | case RTN_BLACKHOLE: /* fall through */ | |
4002 | case RTN_PROHIBIT: | |
4003 | /* Packets hitting these routes need to be trapped, but | |
4004 | * can do so with a lower priority than packets directed | |
4005 | * at the host, so use action type local instead of trap. | |
4006 | */ | |
61c503f9 | 4007 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; |
97989ee0 IS |
4008 | return 0; |
4009 | case RTN_UNICAST: | |
9b01451a | 4010 | if (mlxsw_sp_fi_is_gateway(mlxsw_sp, fi)) |
97989ee0 | 4011 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; |
9b01451a PM |
4012 | else |
4013 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
97989ee0 IS |
4014 | return 0; |
4015 | default: | |
4016 | return -EINVAL; | |
4017 | } | |
a7ff87ac JP |
4018 | } |
4019 | ||
4f1c7f1f | 4020 | static struct mlxsw_sp_fib4_entry * |
9aecce1c IS |
4021 | mlxsw_sp_fib4_entry_create(struct mlxsw_sp *mlxsw_sp, |
4022 | struct mlxsw_sp_fib_node *fib_node, | |
4023 | const struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 4024 | { |
4f1c7f1f | 4025 | struct mlxsw_sp_fib4_entry *fib4_entry; |
61c503f9 | 4026 | struct mlxsw_sp_fib_entry *fib_entry; |
61c503f9 JP |
4027 | int err; |
4028 | ||
4f1c7f1f IS |
4029 | fib4_entry = kzalloc(sizeof(*fib4_entry), GFP_KERNEL); |
4030 | if (!fib4_entry) | |
4031 | return ERR_PTR(-ENOMEM); | |
4032 | fib_entry = &fib4_entry->common; | |
61c503f9 | 4033 | |
013b20f9 | 4034 | err = mlxsw_sp_fib4_entry_type_set(mlxsw_sp, fen_info, fib_entry); |
61c503f9 | 4035 | if (err) |
013b20f9 | 4036 | goto err_fib4_entry_type_set; |
61c503f9 | 4037 | |
0e6ea2a4 | 4038 | err = mlxsw_sp_nexthop4_group_get(mlxsw_sp, fib_entry, fen_info->fi); |
b8399a1e | 4039 | if (err) |
0e6ea2a4 | 4040 | goto err_nexthop4_group_get; |
b8399a1e | 4041 | |
4f1c7f1f IS |
4042 | fib4_entry->prio = fen_info->fi->fib_priority; |
4043 | fib4_entry->tb_id = fen_info->tb_id; | |
4044 | fib4_entry->type = fen_info->type; | |
4045 | fib4_entry->tos = fen_info->tos; | |
9aecce1c IS |
4046 | |
4047 | fib_entry->fib_node = fib_node; | |
4048 | ||
4f1c7f1f | 4049 | return fib4_entry; |
5b004412 | 4050 | |
0e6ea2a4 | 4051 | err_nexthop4_group_get: |
013b20f9 | 4052 | err_fib4_entry_type_set: |
4f1c7f1f | 4053 | kfree(fib4_entry); |
5b004412 JP |
4054 | return ERR_PTR(err); |
4055 | } | |
4056 | ||
9aecce1c | 4057 | static void mlxsw_sp_fib4_entry_destroy(struct mlxsw_sp *mlxsw_sp, |
4f1c7f1f | 4058 | struct mlxsw_sp_fib4_entry *fib4_entry) |
9aecce1c | 4059 | { |
0e6ea2a4 | 4060 | mlxsw_sp_nexthop4_group_put(mlxsw_sp, &fib4_entry->common); |
4f1c7f1f | 4061 | kfree(fib4_entry); |
9aecce1c IS |
4062 | } |
4063 | ||
4f1c7f1f | 4064 | static struct mlxsw_sp_fib4_entry * |
9aecce1c IS |
4065 | mlxsw_sp_fib4_entry_lookup(struct mlxsw_sp *mlxsw_sp, |
4066 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 4067 | { |
4f1c7f1f | 4068 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 4069 | struct mlxsw_sp_fib_node *fib_node; |
160e22aa IS |
4070 | struct mlxsw_sp_fib *fib; |
4071 | struct mlxsw_sp_vr *vr; | |
4072 | ||
4073 | vr = mlxsw_sp_vr_find(mlxsw_sp, fen_info->tb_id); | |
4074 | if (!vr) | |
4075 | return NULL; | |
4076 | fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV4); | |
5b004412 | 4077 | |
160e22aa IS |
4078 | fib_node = mlxsw_sp_fib_node_lookup(fib, &fen_info->dst, |
4079 | sizeof(fen_info->dst), | |
4080 | fen_info->dst_len); | |
4081 | if (!fib_node) | |
9aecce1c IS |
4082 | return NULL; |
4083 | ||
4f1c7f1f IS |
4084 | list_for_each_entry(fib4_entry, &fib_node->entry_list, common.list) { |
4085 | if (fib4_entry->tb_id == fen_info->tb_id && | |
4086 | fib4_entry->tos == fen_info->tos && | |
4087 | fib4_entry->type == fen_info->type && | |
ba31d366 AS |
4088 | mlxsw_sp_nexthop4_group_fi(fib4_entry->common.nh_group) == |
4089 | fen_info->fi) { | |
4f1c7f1f | 4090 | return fib4_entry; |
9aecce1c IS |
4091 | } |
4092 | } | |
4093 | ||
4094 | return NULL; | |
4095 | } | |
4096 | ||
4097 | static const struct rhashtable_params mlxsw_sp_fib_ht_params = { | |
4098 | .key_offset = offsetof(struct mlxsw_sp_fib_node, key), | |
4099 | .head_offset = offsetof(struct mlxsw_sp_fib_node, ht_node), | |
4100 | .key_len = sizeof(struct mlxsw_sp_fib_key), | |
4101 | .automatic_shrinking = true, | |
4102 | }; | |
4103 | ||
4104 | static int mlxsw_sp_fib_node_insert(struct mlxsw_sp_fib *fib, | |
4105 | struct mlxsw_sp_fib_node *fib_node) | |
4106 | { | |
4107 | return rhashtable_insert_fast(&fib->ht, &fib_node->ht_node, | |
4108 | mlxsw_sp_fib_ht_params); | |
4109 | } | |
4110 | ||
4111 | static void mlxsw_sp_fib_node_remove(struct mlxsw_sp_fib *fib, | |
4112 | struct mlxsw_sp_fib_node *fib_node) | |
4113 | { | |
4114 | rhashtable_remove_fast(&fib->ht, &fib_node->ht_node, | |
4115 | mlxsw_sp_fib_ht_params); | |
4116 | } | |
4117 | ||
4118 | static struct mlxsw_sp_fib_node * | |
4119 | mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr, | |
4120 | size_t addr_len, unsigned char prefix_len) | |
4121 | { | |
4122 | struct mlxsw_sp_fib_key key; | |
4123 | ||
4124 | memset(&key, 0, sizeof(key)); | |
4125 | memcpy(key.addr, addr, addr_len); | |
4126 | key.prefix_len = prefix_len; | |
4127 | return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params); | |
4128 | } | |
4129 | ||
4130 | static struct mlxsw_sp_fib_node * | |
76610ebb | 4131 | mlxsw_sp_fib_node_create(struct mlxsw_sp_fib *fib, const void *addr, |
9aecce1c IS |
4132 | size_t addr_len, unsigned char prefix_len) |
4133 | { | |
4134 | struct mlxsw_sp_fib_node *fib_node; | |
4135 | ||
4136 | fib_node = kzalloc(sizeof(*fib_node), GFP_KERNEL); | |
4137 | if (!fib_node) | |
5b004412 JP |
4138 | return NULL; |
4139 | ||
9aecce1c | 4140 | INIT_LIST_HEAD(&fib_node->entry_list); |
76610ebb | 4141 | list_add(&fib_node->list, &fib->node_list); |
9aecce1c IS |
4142 | memcpy(fib_node->key.addr, addr, addr_len); |
4143 | fib_node->key.prefix_len = prefix_len; | |
9aecce1c IS |
4144 | |
4145 | return fib_node; | |
4146 | } | |
4147 | ||
4148 | static void mlxsw_sp_fib_node_destroy(struct mlxsw_sp_fib_node *fib_node) | |
4149 | { | |
9aecce1c IS |
4150 | list_del(&fib_node->list); |
4151 | WARN_ON(!list_empty(&fib_node->entry_list)); | |
4152 | kfree(fib_node); | |
4153 | } | |
4154 | ||
4155 | static bool | |
4156 | mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node, | |
4157 | const struct mlxsw_sp_fib_entry *fib_entry) | |
4158 | { | |
4159 | return list_first_entry(&fib_node->entry_list, | |
4160 | struct mlxsw_sp_fib_entry, list) == fib_entry; | |
4161 | } | |
4162 | ||
fc922bb0 IS |
4163 | static int mlxsw_sp_fib_lpm_tree_link(struct mlxsw_sp *mlxsw_sp, |
4164 | struct mlxsw_sp_fib *fib, | |
4165 | struct mlxsw_sp_fib_node *fib_node) | |
4166 | { | |
4167 | struct mlxsw_sp_prefix_usage req_prefix_usage = {{ 0 } }; | |
4168 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
4169 | int err; | |
4170 | ||
4171 | /* Since the tree is shared between all virtual routers we must | |
4172 | * make sure it contains all the required prefix lengths. This | |
4173 | * can be computed by either adding the new prefix length to the | |
4174 | * existing prefix usage of a bound tree, or by aggregating the | |
4175 | * prefix lengths across all virtual routers and adding the new | |
4176 | * one as well. | |
4177 | */ | |
4178 | if (fib->lpm_tree) | |
4179 | mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, | |
4180 | &fib->lpm_tree->prefix_usage); | |
4181 | else | |
4182 | mlxsw_sp_vrs_prefixes(mlxsw_sp, fib->proto, &req_prefix_usage); | |
4183 | mlxsw_sp_prefix_usage_set(&req_prefix_usage, fib_node->key.prefix_len); | |
4184 | ||
4185 | lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, | |
4186 | fib->proto); | |
4187 | if (IS_ERR(lpm_tree)) | |
4188 | return PTR_ERR(lpm_tree); | |
4189 | ||
4190 | if (fib->lpm_tree && fib->lpm_tree->id == lpm_tree->id) | |
4191 | return 0; | |
4192 | ||
4193 | err = mlxsw_sp_vrs_lpm_tree_replace(mlxsw_sp, fib, lpm_tree); | |
4194 | if (err) | |
4195 | return err; | |
4196 | ||
4197 | return 0; | |
4198 | } | |
4199 | ||
4200 | static void mlxsw_sp_fib_lpm_tree_unlink(struct mlxsw_sp *mlxsw_sp, | |
4201 | struct mlxsw_sp_fib *fib) | |
4202 | { | |
fc922bb0 IS |
4203 | if (!mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) |
4204 | return; | |
4205 | mlxsw_sp_vr_lpm_tree_unbind(mlxsw_sp, fib); | |
4206 | mlxsw_sp_lpm_tree_put(mlxsw_sp, fib->lpm_tree); | |
4207 | fib->lpm_tree = NULL; | |
4208 | } | |
4209 | ||
9aecce1c IS |
4210 | static void mlxsw_sp_fib_node_prefix_inc(struct mlxsw_sp_fib_node *fib_node) |
4211 | { | |
4212 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 4213 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
4214 | |
4215 | if (fib->prefix_ref_count[prefix_len]++ == 0) | |
4216 | mlxsw_sp_prefix_usage_set(&fib->prefix_usage, prefix_len); | |
4217 | } | |
4218 | ||
4219 | static void mlxsw_sp_fib_node_prefix_dec(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_clear(&fib->prefix_usage, prefix_len); | |
5b004412 JP |
4226 | } |
4227 | ||
76610ebb IS |
4228 | static int mlxsw_sp_fib_node_init(struct mlxsw_sp *mlxsw_sp, |
4229 | struct mlxsw_sp_fib_node *fib_node, | |
4230 | struct mlxsw_sp_fib *fib) | |
4231 | { | |
76610ebb IS |
4232 | int err; |
4233 | ||
4234 | err = mlxsw_sp_fib_node_insert(fib, fib_node); | |
4235 | if (err) | |
4236 | return err; | |
4237 | fib_node->fib = fib; | |
4238 | ||
fc922bb0 IS |
4239 | err = mlxsw_sp_fib_lpm_tree_link(mlxsw_sp, fib, fib_node); |
4240 | if (err) | |
4241 | goto err_fib_lpm_tree_link; | |
76610ebb IS |
4242 | |
4243 | mlxsw_sp_fib_node_prefix_inc(fib_node); | |
4244 | ||
4245 | return 0; | |
4246 | ||
fc922bb0 | 4247 | err_fib_lpm_tree_link: |
76610ebb IS |
4248 | fib_node->fib = NULL; |
4249 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
4250 | return err; | |
4251 | } | |
4252 | ||
4253 | static void mlxsw_sp_fib_node_fini(struct mlxsw_sp *mlxsw_sp, | |
4254 | struct mlxsw_sp_fib_node *fib_node) | |
4255 | { | |
76610ebb IS |
4256 | struct mlxsw_sp_fib *fib = fib_node->fib; |
4257 | ||
4258 | mlxsw_sp_fib_node_prefix_dec(fib_node); | |
fc922bb0 | 4259 | mlxsw_sp_fib_lpm_tree_unlink(mlxsw_sp, fib); |
76610ebb IS |
4260 | fib_node->fib = NULL; |
4261 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
4262 | } | |
4263 | ||
9aecce1c | 4264 | static struct mlxsw_sp_fib_node * |
731ea1ca IS |
4265 | mlxsw_sp_fib_node_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id, const void *addr, |
4266 | size_t addr_len, unsigned char prefix_len, | |
4267 | enum mlxsw_sp_l3proto proto) | |
5b004412 | 4268 | { |
9aecce1c | 4269 | struct mlxsw_sp_fib_node *fib_node; |
76610ebb | 4270 | struct mlxsw_sp_fib *fib; |
9aecce1c IS |
4271 | struct mlxsw_sp_vr *vr; |
4272 | int err; | |
4273 | ||
f8fa9b4e | 4274 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id, NULL); |
9aecce1c IS |
4275 | if (IS_ERR(vr)) |
4276 | return ERR_CAST(vr); | |
731ea1ca | 4277 | fib = mlxsw_sp_vr_fib(vr, proto); |
9aecce1c | 4278 | |
731ea1ca | 4279 | fib_node = mlxsw_sp_fib_node_lookup(fib, addr, addr_len, prefix_len); |
9aecce1c IS |
4280 | if (fib_node) |
4281 | return fib_node; | |
5b004412 | 4282 | |
731ea1ca | 4283 | fib_node = mlxsw_sp_fib_node_create(fib, addr, addr_len, prefix_len); |
9aecce1c IS |
4284 | if (!fib_node) { |
4285 | err = -ENOMEM; | |
4286 | goto err_fib_node_create; | |
5b004412 | 4287 | } |
9aecce1c | 4288 | |
76610ebb IS |
4289 | err = mlxsw_sp_fib_node_init(mlxsw_sp, fib_node, fib); |
4290 | if (err) | |
4291 | goto err_fib_node_init; | |
4292 | ||
9aecce1c IS |
4293 | return fib_node; |
4294 | ||
76610ebb IS |
4295 | err_fib_node_init: |
4296 | mlxsw_sp_fib_node_destroy(fib_node); | |
9aecce1c | 4297 | err_fib_node_create: |
76610ebb | 4298 | mlxsw_sp_vr_put(vr); |
9aecce1c | 4299 | return ERR_PTR(err); |
5b004412 JP |
4300 | } |
4301 | ||
731ea1ca IS |
4302 | static void mlxsw_sp_fib_node_put(struct mlxsw_sp *mlxsw_sp, |
4303 | struct mlxsw_sp_fib_node *fib_node) | |
5b004412 | 4304 | { |
76610ebb | 4305 | struct mlxsw_sp_vr *vr = fib_node->fib->vr; |
5b004412 | 4306 | |
9aecce1c IS |
4307 | if (!list_empty(&fib_node->entry_list)) |
4308 | return; | |
76610ebb | 4309 | mlxsw_sp_fib_node_fini(mlxsw_sp, fib_node); |
9aecce1c | 4310 | mlxsw_sp_fib_node_destroy(fib_node); |
76610ebb | 4311 | mlxsw_sp_vr_put(vr); |
61c503f9 JP |
4312 | } |
4313 | ||
4f1c7f1f | 4314 | static struct mlxsw_sp_fib4_entry * |
9aecce1c | 4315 | mlxsw_sp_fib4_node_entry_find(const struct mlxsw_sp_fib_node *fib_node, |
4f1c7f1f | 4316 | const struct mlxsw_sp_fib4_entry *new4_entry) |
61c503f9 | 4317 | { |
4f1c7f1f | 4318 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 4319 | |
4f1c7f1f IS |
4320 | list_for_each_entry(fib4_entry, &fib_node->entry_list, common.list) { |
4321 | if (fib4_entry->tb_id > new4_entry->tb_id) | |
9aecce1c | 4322 | continue; |
4f1c7f1f | 4323 | if (fib4_entry->tb_id != new4_entry->tb_id) |
9aecce1c | 4324 | break; |
4f1c7f1f | 4325 | if (fib4_entry->tos > new4_entry->tos) |
9aecce1c | 4326 | continue; |
4f1c7f1f IS |
4327 | if (fib4_entry->prio >= new4_entry->prio || |
4328 | fib4_entry->tos < new4_entry->tos) | |
4329 | return fib4_entry; | |
9aecce1c IS |
4330 | } |
4331 | ||
4332 | return NULL; | |
4333 | } | |
4334 | ||
4f1c7f1f IS |
4335 | static int |
4336 | mlxsw_sp_fib4_node_list_append(struct mlxsw_sp_fib4_entry *fib4_entry, | |
4337 | struct mlxsw_sp_fib4_entry *new4_entry) | |
4283bce5 IS |
4338 | { |
4339 | struct mlxsw_sp_fib_node *fib_node; | |
4340 | ||
4f1c7f1f | 4341 | if (WARN_ON(!fib4_entry)) |
4283bce5 IS |
4342 | return -EINVAL; |
4343 | ||
4f1c7f1f IS |
4344 | fib_node = fib4_entry->common.fib_node; |
4345 | list_for_each_entry_from(fib4_entry, &fib_node->entry_list, | |
4346 | common.list) { | |
4347 | if (fib4_entry->tb_id != new4_entry->tb_id || | |
4348 | fib4_entry->tos != new4_entry->tos || | |
4349 | fib4_entry->prio != new4_entry->prio) | |
4283bce5 IS |
4350 | break; |
4351 | } | |
4352 | ||
4f1c7f1f | 4353 | list_add_tail(&new4_entry->common.list, &fib4_entry->common.list); |
4283bce5 IS |
4354 | return 0; |
4355 | } | |
4356 | ||
9aecce1c | 4357 | static int |
9efbee6f | 4358 | mlxsw_sp_fib4_node_list_insert(struct mlxsw_sp_fib4_entry *new4_entry, |
599cf8f9 | 4359 | bool replace, bool append) |
9aecce1c | 4360 | { |
9efbee6f | 4361 | struct mlxsw_sp_fib_node *fib_node = new4_entry->common.fib_node; |
4f1c7f1f | 4362 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 4363 | |
4f1c7f1f | 4364 | fib4_entry = mlxsw_sp_fib4_node_entry_find(fib_node, new4_entry); |
9aecce1c | 4365 | |
4283bce5 | 4366 | if (append) |
4f1c7f1f IS |
4367 | return mlxsw_sp_fib4_node_list_append(fib4_entry, new4_entry); |
4368 | if (replace && WARN_ON(!fib4_entry)) | |
599cf8f9 | 4369 | return -EINVAL; |
4283bce5 | 4370 | |
599cf8f9 IS |
4371 | /* Insert new entry before replaced one, so that we can later |
4372 | * remove the second. | |
4373 | */ | |
4f1c7f1f IS |
4374 | if (fib4_entry) { |
4375 | list_add_tail(&new4_entry->common.list, | |
4376 | &fib4_entry->common.list); | |
9aecce1c | 4377 | } else { |
4f1c7f1f | 4378 | struct mlxsw_sp_fib4_entry *last; |
9aecce1c | 4379 | |
4f1c7f1f IS |
4380 | list_for_each_entry(last, &fib_node->entry_list, common.list) { |
4381 | if (new4_entry->tb_id > last->tb_id) | |
9aecce1c | 4382 | break; |
4f1c7f1f | 4383 | fib4_entry = last; |
9aecce1c IS |
4384 | } |
4385 | ||
4f1c7f1f IS |
4386 | if (fib4_entry) |
4387 | list_add(&new4_entry->common.list, | |
4388 | &fib4_entry->common.list); | |
9aecce1c | 4389 | else |
4f1c7f1f IS |
4390 | list_add(&new4_entry->common.list, |
4391 | &fib_node->entry_list); | |
9aecce1c IS |
4392 | } |
4393 | ||
4394 | return 0; | |
4395 | } | |
4396 | ||
4397 | static void | |
4f1c7f1f | 4398 | mlxsw_sp_fib4_node_list_remove(struct mlxsw_sp_fib4_entry *fib4_entry) |
9aecce1c | 4399 | { |
4f1c7f1f | 4400 | list_del(&fib4_entry->common.list); |
9aecce1c IS |
4401 | } |
4402 | ||
80c238f9 IS |
4403 | static int mlxsw_sp_fib_node_entry_add(struct mlxsw_sp *mlxsw_sp, |
4404 | struct mlxsw_sp_fib_entry *fib_entry) | |
9aecce1c | 4405 | { |
9efbee6f IS |
4406 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; |
4407 | ||
9aecce1c IS |
4408 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) |
4409 | return 0; | |
4410 | ||
4411 | /* To prevent packet loss, overwrite the previously offloaded | |
4412 | * entry. | |
4413 | */ | |
4414 | if (!list_is_singular(&fib_node->entry_list)) { | |
4415 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
4416 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
4417 | ||
4418 | mlxsw_sp_fib_entry_offload_refresh(n, op, 0); | |
4419 | } | |
4420 | ||
4421 | return mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
4422 | } | |
4423 | ||
80c238f9 IS |
4424 | static void mlxsw_sp_fib_node_entry_del(struct mlxsw_sp *mlxsw_sp, |
4425 | struct mlxsw_sp_fib_entry *fib_entry) | |
9aecce1c | 4426 | { |
9efbee6f IS |
4427 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; |
4428 | ||
9aecce1c IS |
4429 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) |
4430 | return; | |
4431 | ||
4432 | /* Promote the next entry by overwriting the deleted entry */ | |
4433 | if (!list_is_singular(&fib_node->entry_list)) { | |
4434 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
4435 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
4436 | ||
4437 | mlxsw_sp_fib_entry_update(mlxsw_sp, n); | |
4438 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0); | |
4439 | return; | |
4440 | } | |
4441 | ||
4442 | mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry); | |
4443 | } | |
4444 | ||
4445 | static int mlxsw_sp_fib4_node_entry_link(struct mlxsw_sp *mlxsw_sp, | |
4f1c7f1f | 4446 | struct mlxsw_sp_fib4_entry *fib4_entry, |
599cf8f9 | 4447 | bool replace, bool append) |
9aecce1c | 4448 | { |
9aecce1c IS |
4449 | int err; |
4450 | ||
9efbee6f | 4451 | err = mlxsw_sp_fib4_node_list_insert(fib4_entry, replace, append); |
9aecce1c IS |
4452 | if (err) |
4453 | return err; | |
4454 | ||
80c238f9 | 4455 | err = mlxsw_sp_fib_node_entry_add(mlxsw_sp, &fib4_entry->common); |
9aecce1c | 4456 | if (err) |
80c238f9 | 4457 | goto err_fib_node_entry_add; |
9aecce1c | 4458 | |
9aecce1c IS |
4459 | return 0; |
4460 | ||
80c238f9 | 4461 | err_fib_node_entry_add: |
4f1c7f1f | 4462 | mlxsw_sp_fib4_node_list_remove(fib4_entry); |
9aecce1c IS |
4463 | return err; |
4464 | } | |
4465 | ||
4466 | static void | |
4467 | mlxsw_sp_fib4_node_entry_unlink(struct mlxsw_sp *mlxsw_sp, | |
4f1c7f1f | 4468 | struct mlxsw_sp_fib4_entry *fib4_entry) |
9aecce1c | 4469 | { |
80c238f9 | 4470 | mlxsw_sp_fib_node_entry_del(mlxsw_sp, &fib4_entry->common); |
4f1c7f1f | 4471 | mlxsw_sp_fib4_node_list_remove(fib4_entry); |
4607f6d2 PM |
4472 | |
4473 | if (fib4_entry->common.type == MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP) | |
4474 | mlxsw_sp_fib_entry_decap_fini(mlxsw_sp, &fib4_entry->common); | |
9aecce1c IS |
4475 | } |
4476 | ||
599cf8f9 | 4477 | static void mlxsw_sp_fib4_entry_replace(struct mlxsw_sp *mlxsw_sp, |
4f1c7f1f | 4478 | struct mlxsw_sp_fib4_entry *fib4_entry, |
599cf8f9 IS |
4479 | bool replace) |
4480 | { | |
4f1c7f1f IS |
4481 | struct mlxsw_sp_fib_node *fib_node = fib4_entry->common.fib_node; |
4482 | struct mlxsw_sp_fib4_entry *replaced; | |
599cf8f9 IS |
4483 | |
4484 | if (!replace) | |
4485 | return; | |
4486 | ||
4487 | /* We inserted the new entry before replaced one */ | |
4f1c7f1f | 4488 | replaced = list_next_entry(fib4_entry, common.list); |
599cf8f9 IS |
4489 | |
4490 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, replaced); | |
4491 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, replaced); | |
731ea1ca | 4492 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); |
599cf8f9 IS |
4493 | } |
4494 | ||
9aecce1c IS |
4495 | static int |
4496 | mlxsw_sp_router_fib4_add(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 4497 | const struct fib_entry_notifier_info *fen_info, |
599cf8f9 | 4498 | bool replace, bool append) |
9aecce1c | 4499 | { |
4f1c7f1f | 4500 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 4501 | struct mlxsw_sp_fib_node *fib_node; |
61c503f9 JP |
4502 | int err; |
4503 | ||
9011b677 | 4504 | if (mlxsw_sp->router->aborted) |
b45f64d1 JP |
4505 | return 0; |
4506 | ||
731ea1ca IS |
4507 | fib_node = mlxsw_sp_fib_node_get(mlxsw_sp, fen_info->tb_id, |
4508 | &fen_info->dst, sizeof(fen_info->dst), | |
4509 | fen_info->dst_len, | |
4510 | MLXSW_SP_L3_PROTO_IPV4); | |
9aecce1c IS |
4511 | if (IS_ERR(fib_node)) { |
4512 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to get FIB node\n"); | |
4513 | return PTR_ERR(fib_node); | |
b45f64d1 | 4514 | } |
61c503f9 | 4515 | |
4f1c7f1f IS |
4516 | fib4_entry = mlxsw_sp_fib4_entry_create(mlxsw_sp, fib_node, fen_info); |
4517 | if (IS_ERR(fib4_entry)) { | |
9aecce1c | 4518 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to create FIB entry\n"); |
4f1c7f1f | 4519 | err = PTR_ERR(fib4_entry); |
9aecce1c IS |
4520 | goto err_fib4_entry_create; |
4521 | } | |
5b004412 | 4522 | |
4f1c7f1f | 4523 | err = mlxsw_sp_fib4_node_entry_link(mlxsw_sp, fib4_entry, replace, |
599cf8f9 | 4524 | append); |
b45f64d1 | 4525 | if (err) { |
9aecce1c IS |
4526 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to link FIB entry to node\n"); |
4527 | goto err_fib4_node_entry_link; | |
b45f64d1 | 4528 | } |
9aecce1c | 4529 | |
4f1c7f1f | 4530 | mlxsw_sp_fib4_entry_replace(mlxsw_sp, fib4_entry, replace); |
599cf8f9 | 4531 | |
61c503f9 JP |
4532 | return 0; |
4533 | ||
9aecce1c | 4534 | err_fib4_node_entry_link: |
4f1c7f1f | 4535 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); |
9aecce1c | 4536 | err_fib4_entry_create: |
731ea1ca | 4537 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); |
61c503f9 JP |
4538 | return err; |
4539 | } | |
4540 | ||
37956d78 JP |
4541 | static void mlxsw_sp_router_fib4_del(struct mlxsw_sp *mlxsw_sp, |
4542 | struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 4543 | { |
4f1c7f1f | 4544 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 4545 | struct mlxsw_sp_fib_node *fib_node; |
61c503f9 | 4546 | |
9011b677 | 4547 | if (mlxsw_sp->router->aborted) |
37956d78 | 4548 | return; |
b45f64d1 | 4549 | |
4f1c7f1f IS |
4550 | fib4_entry = mlxsw_sp_fib4_entry_lookup(mlxsw_sp, fen_info); |
4551 | if (WARN_ON(!fib4_entry)) | |
37956d78 | 4552 | return; |
4f1c7f1f | 4553 | fib_node = fib4_entry->common.fib_node; |
5b004412 | 4554 | |
4f1c7f1f IS |
4555 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib4_entry); |
4556 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); | |
731ea1ca | 4557 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); |
61c503f9 | 4558 | } |
b45f64d1 | 4559 | |
428b851f IS |
4560 | static bool mlxsw_sp_fib6_rt_should_ignore(const struct rt6_info *rt) |
4561 | { | |
4562 | /* Packets with link-local destination IP arriving to the router | |
4563 | * are trapped to the CPU, so no need to program specific routes | |
4564 | * for them. | |
4565 | */ | |
4566 | if (ipv6_addr_type(&rt->rt6i_dst.addr) & IPV6_ADDR_LINKLOCAL) | |
4567 | return true; | |
4568 | ||
4569 | /* Multicast routes aren't supported, so ignore them. Neighbour | |
4570 | * Discovery packets are specifically trapped. | |
4571 | */ | |
4572 | if (ipv6_addr_type(&rt->rt6i_dst.addr) & IPV6_ADDR_MULTICAST) | |
4573 | return true; | |
4574 | ||
4575 | /* Cloned routes are irrelevant in the forwarding path. */ | |
4576 | if (rt->rt6i_flags & RTF_CACHE) | |
4577 | return true; | |
4578 | ||
4579 | return false; | |
4580 | } | |
4581 | ||
4582 | static struct mlxsw_sp_rt6 *mlxsw_sp_rt6_create(struct rt6_info *rt) | |
4583 | { | |
4584 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
4585 | ||
4586 | mlxsw_sp_rt6 = kzalloc(sizeof(*mlxsw_sp_rt6), GFP_KERNEL); | |
4587 | if (!mlxsw_sp_rt6) | |
4588 | return ERR_PTR(-ENOMEM); | |
4589 | ||
4590 | /* In case of route replace, replaced route is deleted with | |
4591 | * no notification. Take reference to prevent accessing freed | |
4592 | * memory. | |
4593 | */ | |
4594 | mlxsw_sp_rt6->rt = rt; | |
4595 | rt6_hold(rt); | |
4596 | ||
4597 | return mlxsw_sp_rt6; | |
4598 | } | |
4599 | ||
4600 | #if IS_ENABLED(CONFIG_IPV6) | |
4601 | static void mlxsw_sp_rt6_release(struct rt6_info *rt) | |
4602 | { | |
4603 | rt6_release(rt); | |
4604 | } | |
4605 | #else | |
4606 | static void mlxsw_sp_rt6_release(struct rt6_info *rt) | |
4607 | { | |
4608 | } | |
4609 | #endif | |
4610 | ||
4611 | static void mlxsw_sp_rt6_destroy(struct mlxsw_sp_rt6 *mlxsw_sp_rt6) | |
4612 | { | |
4613 | mlxsw_sp_rt6_release(mlxsw_sp_rt6->rt); | |
4614 | kfree(mlxsw_sp_rt6); | |
4615 | } | |
4616 | ||
4617 | static bool mlxsw_sp_fib6_rt_can_mp(const struct rt6_info *rt) | |
4618 | { | |
4619 | /* RTF_CACHE routes are ignored */ | |
4620 | return (rt->rt6i_flags & (RTF_GATEWAY | RTF_ADDRCONF)) == RTF_GATEWAY; | |
4621 | } | |
4622 | ||
4623 | static struct rt6_info * | |
4624 | mlxsw_sp_fib6_entry_rt(const struct mlxsw_sp_fib6_entry *fib6_entry) | |
4625 | { | |
4626 | return list_first_entry(&fib6_entry->rt6_list, struct mlxsw_sp_rt6, | |
4627 | list)->rt; | |
4628 | } | |
4629 | ||
4630 | static struct mlxsw_sp_fib6_entry * | |
4631 | mlxsw_sp_fib6_node_mp_entry_find(const struct mlxsw_sp_fib_node *fib_node, | |
0a7fd1ac | 4632 | const struct rt6_info *nrt, bool replace) |
428b851f IS |
4633 | { |
4634 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
4635 | ||
0a7fd1ac | 4636 | if (!mlxsw_sp_fib6_rt_can_mp(nrt) || replace) |
428b851f IS |
4637 | return NULL; |
4638 | ||
4639 | list_for_each_entry(fib6_entry, &fib_node->entry_list, common.list) { | |
4640 | struct rt6_info *rt = mlxsw_sp_fib6_entry_rt(fib6_entry); | |
4641 | ||
4642 | /* RT6_TABLE_LOCAL and RT6_TABLE_MAIN share the same | |
4643 | * virtual router. | |
4644 | */ | |
4645 | if (rt->rt6i_table->tb6_id > nrt->rt6i_table->tb6_id) | |
4646 | continue; | |
4647 | if (rt->rt6i_table->tb6_id != nrt->rt6i_table->tb6_id) | |
4648 | break; | |
4649 | if (rt->rt6i_metric < nrt->rt6i_metric) | |
4650 | continue; | |
4651 | if (rt->rt6i_metric == nrt->rt6i_metric && | |
4652 | mlxsw_sp_fib6_rt_can_mp(rt)) | |
4653 | return fib6_entry; | |
4654 | if (rt->rt6i_metric > nrt->rt6i_metric) | |
4655 | break; | |
4656 | } | |
4657 | ||
4658 | return NULL; | |
4659 | } | |
4660 | ||
4661 | static struct mlxsw_sp_rt6 * | |
4662 | mlxsw_sp_fib6_entry_rt_find(const struct mlxsw_sp_fib6_entry *fib6_entry, | |
4663 | const struct rt6_info *rt) | |
4664 | { | |
4665 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
4666 | ||
4667 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
4668 | if (mlxsw_sp_rt6->rt == rt) | |
4669 | return mlxsw_sp_rt6; | |
4670 | } | |
4671 | ||
4672 | return NULL; | |
4673 | } | |
4674 | ||
8f28a309 PM |
4675 | static bool mlxsw_sp_nexthop6_ipip_type(const struct mlxsw_sp *mlxsw_sp, |
4676 | const struct rt6_info *rt, | |
4677 | enum mlxsw_sp_ipip_type *ret) | |
4678 | { | |
4679 | return rt->dst.dev && | |
4680 | mlxsw_sp_netdev_ipip_type(mlxsw_sp, rt->dst.dev, ret); | |
4681 | } | |
4682 | ||
35225e47 PM |
4683 | static int mlxsw_sp_nexthop6_type_init(struct mlxsw_sp *mlxsw_sp, |
4684 | struct mlxsw_sp_nexthop_group *nh_grp, | |
4685 | struct mlxsw_sp_nexthop *nh, | |
4686 | const struct rt6_info *rt) | |
428b851f | 4687 | { |
8f28a309 | 4688 | struct mlxsw_sp_router *router = mlxsw_sp->router; |
428b851f | 4689 | struct net_device *dev = rt->dst.dev; |
8f28a309 | 4690 | enum mlxsw_sp_ipip_type ipipt; |
428b851f IS |
4691 | struct mlxsw_sp_rif *rif; |
4692 | int err; | |
4693 | ||
8f28a309 PM |
4694 | if (mlxsw_sp_nexthop6_ipip_type(mlxsw_sp, rt, &ipipt) && |
4695 | router->ipip_ops_arr[ipipt]->can_offload(mlxsw_sp, dev, | |
4696 | MLXSW_SP_L3_PROTO_IPV6)) { | |
4697 | nh->type = MLXSW_SP_NEXTHOP_TYPE_IPIP; | |
4cccb737 | 4698 | err = mlxsw_sp_nexthop_ipip_init(mlxsw_sp, nh, dev); |
de0f43c0 PM |
4699 | if (err) |
4700 | return err; | |
4701 | mlxsw_sp_nexthop_rif_init(nh, &nh->ipip_entry->ol_lb->common); | |
4702 | return 0; | |
8f28a309 PM |
4703 | } |
4704 | ||
35225e47 | 4705 | nh->type = MLXSW_SP_NEXTHOP_TYPE_ETH; |
428b851f IS |
4706 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
4707 | if (!rif) | |
4708 | return 0; | |
4709 | mlxsw_sp_nexthop_rif_init(nh, rif); | |
4710 | ||
4711 | err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); | |
4712 | if (err) | |
4713 | goto err_nexthop_neigh_init; | |
4714 | ||
4715 | return 0; | |
4716 | ||
4717 | err_nexthop_neigh_init: | |
4718 | mlxsw_sp_nexthop_rif_fini(nh); | |
4719 | return err; | |
4720 | } | |
4721 | ||
35225e47 PM |
4722 | static void mlxsw_sp_nexthop6_type_fini(struct mlxsw_sp *mlxsw_sp, |
4723 | struct mlxsw_sp_nexthop *nh) | |
4724 | { | |
4725 | mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh); | |
4726 | } | |
4727 | ||
4728 | static int mlxsw_sp_nexthop6_init(struct mlxsw_sp *mlxsw_sp, | |
4729 | struct mlxsw_sp_nexthop_group *nh_grp, | |
4730 | struct mlxsw_sp_nexthop *nh, | |
4731 | const struct rt6_info *rt) | |
4732 | { | |
4733 | struct net_device *dev = rt->dst.dev; | |
4734 | ||
4735 | nh->nh_grp = nh_grp; | |
408bd946 | 4736 | nh->nh_weight = 1; |
35225e47 | 4737 | memcpy(&nh->gw_addr, &rt->rt6i_gateway, sizeof(nh->gw_addr)); |
a5390278 | 4738 | mlxsw_sp_nexthop_counter_alloc(mlxsw_sp, nh); |
35225e47 | 4739 | |
dbe4598c AS |
4740 | list_add_tail(&nh->router_list_node, &mlxsw_sp->router->nexthop_list); |
4741 | ||
35225e47 PM |
4742 | if (!dev) |
4743 | return 0; | |
4744 | nh->ifindex = dev->ifindex; | |
4745 | ||
4746 | return mlxsw_sp_nexthop6_type_init(mlxsw_sp, nh_grp, nh, rt); | |
4747 | } | |
4748 | ||
428b851f IS |
4749 | static void mlxsw_sp_nexthop6_fini(struct mlxsw_sp *mlxsw_sp, |
4750 | struct mlxsw_sp_nexthop *nh) | |
4751 | { | |
35225e47 | 4752 | mlxsw_sp_nexthop6_type_fini(mlxsw_sp, nh); |
dbe4598c | 4753 | list_del(&nh->router_list_node); |
a5390278 | 4754 | mlxsw_sp_nexthop_counter_free(mlxsw_sp, nh); |
428b851f IS |
4755 | } |
4756 | ||
f6050ee6 PM |
4757 | static bool mlxsw_sp_rt6_is_gateway(const struct mlxsw_sp *mlxsw_sp, |
4758 | const struct rt6_info *rt) | |
4759 | { | |
8f28a309 PM |
4760 | return rt->rt6i_flags & RTF_GATEWAY || |
4761 | mlxsw_sp_nexthop6_ipip_type(mlxsw_sp, rt, NULL); | |
f6050ee6 PM |
4762 | } |
4763 | ||
428b851f IS |
4764 | static struct mlxsw_sp_nexthop_group * |
4765 | mlxsw_sp_nexthop6_group_create(struct mlxsw_sp *mlxsw_sp, | |
4766 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
4767 | { | |
4768 | struct mlxsw_sp_nexthop_group *nh_grp; | |
4769 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
4770 | struct mlxsw_sp_nexthop *nh; | |
4771 | size_t alloc_size; | |
4772 | int i = 0; | |
4773 | int err; | |
4774 | ||
4775 | alloc_size = sizeof(*nh_grp) + | |
4776 | fib6_entry->nrt6 * sizeof(struct mlxsw_sp_nexthop); | |
4777 | nh_grp = kzalloc(alloc_size, GFP_KERNEL); | |
4778 | if (!nh_grp) | |
4779 | return ERR_PTR(-ENOMEM); | |
4780 | INIT_LIST_HEAD(&nh_grp->fib_list); | |
4781 | #if IS_ENABLED(CONFIG_IPV6) | |
4782 | nh_grp->neigh_tbl = &nd_tbl; | |
4783 | #endif | |
4784 | mlxsw_sp_rt6 = list_first_entry(&fib6_entry->rt6_list, | |
4785 | struct mlxsw_sp_rt6, list); | |
f6050ee6 | 4786 | nh_grp->gateway = mlxsw_sp_rt6_is_gateway(mlxsw_sp, mlxsw_sp_rt6->rt); |
428b851f IS |
4787 | nh_grp->count = fib6_entry->nrt6; |
4788 | for (i = 0; i < nh_grp->count; i++) { | |
4789 | struct rt6_info *rt = mlxsw_sp_rt6->rt; | |
4790 | ||
4791 | nh = &nh_grp->nexthops[i]; | |
4792 | err = mlxsw_sp_nexthop6_init(mlxsw_sp, nh_grp, nh, rt); | |
4793 | if (err) | |
4794 | goto err_nexthop6_init; | |
4795 | mlxsw_sp_rt6 = list_next_entry(mlxsw_sp_rt6, list); | |
4796 | } | |
e6f3b379 AS |
4797 | |
4798 | err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); | |
4799 | if (err) | |
4800 | goto err_nexthop_group_insert; | |
4801 | ||
428b851f IS |
4802 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
4803 | return nh_grp; | |
4804 | ||
e6f3b379 | 4805 | err_nexthop_group_insert: |
428b851f IS |
4806 | err_nexthop6_init: |
4807 | for (i--; i >= 0; i--) { | |
4808 | nh = &nh_grp->nexthops[i]; | |
4809 | mlxsw_sp_nexthop6_fini(mlxsw_sp, nh); | |
4810 | } | |
4811 | kfree(nh_grp); | |
4812 | return ERR_PTR(err); | |
4813 | } | |
4814 | ||
4815 | static void | |
4816 | mlxsw_sp_nexthop6_group_destroy(struct mlxsw_sp *mlxsw_sp, | |
4817 | struct mlxsw_sp_nexthop_group *nh_grp) | |
4818 | { | |
4819 | struct mlxsw_sp_nexthop *nh; | |
4820 | int i = nh_grp->count; | |
4821 | ||
e6f3b379 | 4822 | mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); |
428b851f IS |
4823 | for (i--; i >= 0; i--) { |
4824 | nh = &nh_grp->nexthops[i]; | |
4825 | mlxsw_sp_nexthop6_fini(mlxsw_sp, nh); | |
4826 | } | |
4827 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); | |
4828 | WARN_ON(nh_grp->adj_index_valid); | |
4829 | kfree(nh_grp); | |
4830 | } | |
4831 | ||
4832 | static int mlxsw_sp_nexthop6_group_get(struct mlxsw_sp *mlxsw_sp, | |
4833 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
4834 | { | |
4835 | struct mlxsw_sp_nexthop_group *nh_grp; | |
4836 | ||
e6f3b379 AS |
4837 | nh_grp = mlxsw_sp_nexthop6_group_lookup(mlxsw_sp, fib6_entry); |
4838 | if (!nh_grp) { | |
4839 | nh_grp = mlxsw_sp_nexthop6_group_create(mlxsw_sp, fib6_entry); | |
4840 | if (IS_ERR(nh_grp)) | |
4841 | return PTR_ERR(nh_grp); | |
4842 | } | |
428b851f IS |
4843 | |
4844 | list_add_tail(&fib6_entry->common.nexthop_group_node, | |
4845 | &nh_grp->fib_list); | |
4846 | fib6_entry->common.nh_group = nh_grp; | |
4847 | ||
4848 | return 0; | |
4849 | } | |
4850 | ||
4851 | static void mlxsw_sp_nexthop6_group_put(struct mlxsw_sp *mlxsw_sp, | |
4852 | struct mlxsw_sp_fib_entry *fib_entry) | |
4853 | { | |
4854 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
4855 | ||
4856 | list_del(&fib_entry->nexthop_group_node); | |
4857 | if (!list_empty(&nh_grp->fib_list)) | |
4858 | return; | |
4859 | mlxsw_sp_nexthop6_group_destroy(mlxsw_sp, nh_grp); | |
4860 | } | |
4861 | ||
4862 | static int | |
4863 | mlxsw_sp_nexthop6_group_update(struct mlxsw_sp *mlxsw_sp, | |
4864 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
4865 | { | |
4866 | struct mlxsw_sp_nexthop_group *old_nh_grp = fib6_entry->common.nh_group; | |
4867 | int err; | |
4868 | ||
4869 | fib6_entry->common.nh_group = NULL; | |
4870 | list_del(&fib6_entry->common.nexthop_group_node); | |
4871 | ||
4872 | err = mlxsw_sp_nexthop6_group_get(mlxsw_sp, fib6_entry); | |
4873 | if (err) | |
4874 | goto err_nexthop6_group_get; | |
4875 | ||
4876 | /* In case this entry is offloaded, then the adjacency index | |
4877 | * currently associated with it in the device's table is that | |
4878 | * of the old group. Start using the new one instead. | |
4879 | */ | |
4880 | err = mlxsw_sp_fib_node_entry_add(mlxsw_sp, &fib6_entry->common); | |
4881 | if (err) | |
4882 | goto err_fib_node_entry_add; | |
4883 | ||
4884 | if (list_empty(&old_nh_grp->fib_list)) | |
4885 | mlxsw_sp_nexthop6_group_destroy(mlxsw_sp, old_nh_grp); | |
4886 | ||
4887 | return 0; | |
4888 | ||
4889 | err_fib_node_entry_add: | |
4890 | mlxsw_sp_nexthop6_group_put(mlxsw_sp, &fib6_entry->common); | |
4891 | err_nexthop6_group_get: | |
4892 | list_add_tail(&fib6_entry->common.nexthop_group_node, | |
4893 | &old_nh_grp->fib_list); | |
4894 | fib6_entry->common.nh_group = old_nh_grp; | |
4895 | return err; | |
4896 | } | |
4897 | ||
4898 | static int | |
4899 | mlxsw_sp_fib6_entry_nexthop_add(struct mlxsw_sp *mlxsw_sp, | |
4900 | struct mlxsw_sp_fib6_entry *fib6_entry, | |
4901 | struct rt6_info *rt) | |
4902 | { | |
4903 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
4904 | int err; | |
4905 | ||
4906 | mlxsw_sp_rt6 = mlxsw_sp_rt6_create(rt); | |
4907 | if (IS_ERR(mlxsw_sp_rt6)) | |
4908 | return PTR_ERR(mlxsw_sp_rt6); | |
4909 | ||
4910 | list_add_tail(&mlxsw_sp_rt6->list, &fib6_entry->rt6_list); | |
4911 | fib6_entry->nrt6++; | |
4912 | ||
4913 | err = mlxsw_sp_nexthop6_group_update(mlxsw_sp, fib6_entry); | |
4914 | if (err) | |
4915 | goto err_nexthop6_group_update; | |
4916 | ||
4917 | return 0; | |
4918 | ||
4919 | err_nexthop6_group_update: | |
4920 | fib6_entry->nrt6--; | |
4921 | list_del(&mlxsw_sp_rt6->list); | |
4922 | mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); | |
4923 | return err; | |
4924 | } | |
4925 | ||
4926 | static void | |
4927 | mlxsw_sp_fib6_entry_nexthop_del(struct mlxsw_sp *mlxsw_sp, | |
4928 | struct mlxsw_sp_fib6_entry *fib6_entry, | |
4929 | struct rt6_info *rt) | |
4930 | { | |
4931 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
4932 | ||
4933 | mlxsw_sp_rt6 = mlxsw_sp_fib6_entry_rt_find(fib6_entry, rt); | |
4934 | if (WARN_ON(!mlxsw_sp_rt6)) | |
4935 | return; | |
4936 | ||
4937 | fib6_entry->nrt6--; | |
4938 | list_del(&mlxsw_sp_rt6->list); | |
4939 | mlxsw_sp_nexthop6_group_update(mlxsw_sp, fib6_entry); | |
4940 | mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); | |
4941 | } | |
4942 | ||
f6050ee6 PM |
4943 | static void mlxsw_sp_fib6_entry_type_set(struct mlxsw_sp *mlxsw_sp, |
4944 | struct mlxsw_sp_fib_entry *fib_entry, | |
428b851f IS |
4945 | const struct rt6_info *rt) |
4946 | { | |
4947 | /* Packets hitting RTF_REJECT routes need to be discarded by the | |
4948 | * stack. We can rely on their destination device not having a | |
4949 | * RIF (it's the loopback device) and can thus use action type | |
4950 | * local, which will cause them to be trapped with a lower | |
4951 | * priority than packets that need to be locally received. | |
4952 | */ | |
d3b6d377 | 4953 | if (rt->rt6i_flags & (RTF_LOCAL | RTF_ANYCAST)) |
428b851f IS |
4954 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; |
4955 | else if (rt->rt6i_flags & RTF_REJECT) | |
4956 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
f6050ee6 | 4957 | else if (mlxsw_sp_rt6_is_gateway(mlxsw_sp, rt)) |
428b851f IS |
4958 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; |
4959 | else | |
4960 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
4961 | } | |
4962 | ||
4963 | static void | |
4964 | mlxsw_sp_fib6_entry_rt_destroy_all(struct mlxsw_sp_fib6_entry *fib6_entry) | |
4965 | { | |
4966 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6, *tmp; | |
4967 | ||
4968 | list_for_each_entry_safe(mlxsw_sp_rt6, tmp, &fib6_entry->rt6_list, | |
4969 | list) { | |
4970 | fib6_entry->nrt6--; | |
4971 | list_del(&mlxsw_sp_rt6->list); | |
4972 | mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); | |
4973 | } | |
4974 | } | |
4975 | ||
4976 | static struct mlxsw_sp_fib6_entry * | |
4977 | mlxsw_sp_fib6_entry_create(struct mlxsw_sp *mlxsw_sp, | |
4978 | struct mlxsw_sp_fib_node *fib_node, | |
4979 | struct rt6_info *rt) | |
4980 | { | |
4981 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
4982 | struct mlxsw_sp_fib_entry *fib_entry; | |
4983 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
4984 | int err; | |
4985 | ||
4986 | fib6_entry = kzalloc(sizeof(*fib6_entry), GFP_KERNEL); | |
4987 | if (!fib6_entry) | |
4988 | return ERR_PTR(-ENOMEM); | |
4989 | fib_entry = &fib6_entry->common; | |
4990 | ||
4991 | mlxsw_sp_rt6 = mlxsw_sp_rt6_create(rt); | |
4992 | if (IS_ERR(mlxsw_sp_rt6)) { | |
4993 | err = PTR_ERR(mlxsw_sp_rt6); | |
4994 | goto err_rt6_create; | |
4995 | } | |
4996 | ||
f6050ee6 | 4997 | mlxsw_sp_fib6_entry_type_set(mlxsw_sp, fib_entry, mlxsw_sp_rt6->rt); |
428b851f IS |
4998 | |
4999 | INIT_LIST_HEAD(&fib6_entry->rt6_list); | |
5000 | list_add_tail(&mlxsw_sp_rt6->list, &fib6_entry->rt6_list); | |
5001 | fib6_entry->nrt6 = 1; | |
5002 | err = mlxsw_sp_nexthop6_group_get(mlxsw_sp, fib6_entry); | |
5003 | if (err) | |
5004 | goto err_nexthop6_group_get; | |
5005 | ||
5006 | fib_entry->fib_node = fib_node; | |
5007 | ||
5008 | return fib6_entry; | |
5009 | ||
5010 | err_nexthop6_group_get: | |
5011 | list_del(&mlxsw_sp_rt6->list); | |
5012 | mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); | |
5013 | err_rt6_create: | |
5014 | kfree(fib6_entry); | |
5015 | return ERR_PTR(err); | |
5016 | } | |
5017 | ||
5018 | static void mlxsw_sp_fib6_entry_destroy(struct mlxsw_sp *mlxsw_sp, | |
5019 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
5020 | { | |
5021 | mlxsw_sp_nexthop6_group_put(mlxsw_sp, &fib6_entry->common); | |
5022 | mlxsw_sp_fib6_entry_rt_destroy_all(fib6_entry); | |
5023 | WARN_ON(fib6_entry->nrt6); | |
5024 | kfree(fib6_entry); | |
5025 | } | |
5026 | ||
5027 | static struct mlxsw_sp_fib6_entry * | |
5028 | mlxsw_sp_fib6_node_entry_find(const struct mlxsw_sp_fib_node *fib_node, | |
0a7fd1ac | 5029 | const struct rt6_info *nrt, bool replace) |
428b851f | 5030 | { |
0a7fd1ac | 5031 | struct mlxsw_sp_fib6_entry *fib6_entry, *fallback = NULL; |
428b851f IS |
5032 | |
5033 | list_for_each_entry(fib6_entry, &fib_node->entry_list, common.list) { | |
5034 | struct rt6_info *rt = mlxsw_sp_fib6_entry_rt(fib6_entry); | |
5035 | ||
5036 | if (rt->rt6i_table->tb6_id > nrt->rt6i_table->tb6_id) | |
5037 | continue; | |
5038 | if (rt->rt6i_table->tb6_id != nrt->rt6i_table->tb6_id) | |
5039 | break; | |
0a7fd1ac IS |
5040 | if (replace && rt->rt6i_metric == nrt->rt6i_metric) { |
5041 | if (mlxsw_sp_fib6_rt_can_mp(rt) == | |
5042 | mlxsw_sp_fib6_rt_can_mp(nrt)) | |
5043 | return fib6_entry; | |
5044 | if (mlxsw_sp_fib6_rt_can_mp(nrt)) | |
5045 | fallback = fallback ?: fib6_entry; | |
5046 | } | |
428b851f | 5047 | if (rt->rt6i_metric > nrt->rt6i_metric) |
0a7fd1ac | 5048 | return fallback ?: fib6_entry; |
428b851f IS |
5049 | } |
5050 | ||
0a7fd1ac | 5051 | return fallback; |
428b851f IS |
5052 | } |
5053 | ||
5054 | static int | |
0a7fd1ac IS |
5055 | mlxsw_sp_fib6_node_list_insert(struct mlxsw_sp_fib6_entry *new6_entry, |
5056 | bool replace) | |
428b851f IS |
5057 | { |
5058 | struct mlxsw_sp_fib_node *fib_node = new6_entry->common.fib_node; | |
5059 | struct rt6_info *nrt = mlxsw_sp_fib6_entry_rt(new6_entry); | |
5060 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
5061 | ||
0a7fd1ac IS |
5062 | fib6_entry = mlxsw_sp_fib6_node_entry_find(fib_node, nrt, replace); |
5063 | ||
5064 | if (replace && WARN_ON(!fib6_entry)) | |
5065 | return -EINVAL; | |
428b851f IS |
5066 | |
5067 | if (fib6_entry) { | |
5068 | list_add_tail(&new6_entry->common.list, | |
5069 | &fib6_entry->common.list); | |
5070 | } else { | |
5071 | struct mlxsw_sp_fib6_entry *last; | |
5072 | ||
5073 | list_for_each_entry(last, &fib_node->entry_list, common.list) { | |
5074 | struct rt6_info *rt = mlxsw_sp_fib6_entry_rt(last); | |
5075 | ||
5076 | if (nrt->rt6i_table->tb6_id > rt->rt6i_table->tb6_id) | |
5077 | break; | |
5078 | fib6_entry = last; | |
5079 | } | |
5080 | ||
5081 | if (fib6_entry) | |
5082 | list_add(&new6_entry->common.list, | |
5083 | &fib6_entry->common.list); | |
5084 | else | |
5085 | list_add(&new6_entry->common.list, | |
5086 | &fib_node->entry_list); | |
5087 | } | |
5088 | ||
5089 | return 0; | |
5090 | } | |
5091 | ||
5092 | static void | |
5093 | mlxsw_sp_fib6_node_list_remove(struct mlxsw_sp_fib6_entry *fib6_entry) | |
5094 | { | |
5095 | list_del(&fib6_entry->common.list); | |
5096 | } | |
5097 | ||
5098 | static int mlxsw_sp_fib6_node_entry_link(struct mlxsw_sp *mlxsw_sp, | |
0a7fd1ac IS |
5099 | struct mlxsw_sp_fib6_entry *fib6_entry, |
5100 | bool replace) | |
428b851f IS |
5101 | { |
5102 | int err; | |
5103 | ||
0a7fd1ac | 5104 | err = mlxsw_sp_fib6_node_list_insert(fib6_entry, replace); |
428b851f IS |
5105 | if (err) |
5106 | return err; | |
5107 | ||
5108 | err = mlxsw_sp_fib_node_entry_add(mlxsw_sp, &fib6_entry->common); | |
5109 | if (err) | |
5110 | goto err_fib_node_entry_add; | |
5111 | ||
5112 | return 0; | |
5113 | ||
5114 | err_fib_node_entry_add: | |
5115 | mlxsw_sp_fib6_node_list_remove(fib6_entry); | |
5116 | return err; | |
5117 | } | |
5118 | ||
5119 | static void | |
5120 | mlxsw_sp_fib6_node_entry_unlink(struct mlxsw_sp *mlxsw_sp, | |
5121 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
5122 | { | |
5123 | mlxsw_sp_fib_node_entry_del(mlxsw_sp, &fib6_entry->common); | |
5124 | mlxsw_sp_fib6_node_list_remove(fib6_entry); | |
5125 | } | |
5126 | ||
5127 | static struct mlxsw_sp_fib6_entry * | |
5128 | mlxsw_sp_fib6_entry_lookup(struct mlxsw_sp *mlxsw_sp, | |
5129 | const struct rt6_info *rt) | |
5130 | { | |
5131 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
5132 | struct mlxsw_sp_fib_node *fib_node; | |
5133 | struct mlxsw_sp_fib *fib; | |
5134 | struct mlxsw_sp_vr *vr; | |
5135 | ||
5136 | vr = mlxsw_sp_vr_find(mlxsw_sp, rt->rt6i_table->tb6_id); | |
5137 | if (!vr) | |
5138 | return NULL; | |
5139 | fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV6); | |
5140 | ||
5141 | fib_node = mlxsw_sp_fib_node_lookup(fib, &rt->rt6i_dst.addr, | |
5142 | sizeof(rt->rt6i_dst.addr), | |
5143 | rt->rt6i_dst.plen); | |
5144 | if (!fib_node) | |
5145 | return NULL; | |
5146 | ||
5147 | list_for_each_entry(fib6_entry, &fib_node->entry_list, common.list) { | |
5148 | struct rt6_info *iter_rt = mlxsw_sp_fib6_entry_rt(fib6_entry); | |
5149 | ||
5150 | if (rt->rt6i_table->tb6_id == iter_rt->rt6i_table->tb6_id && | |
5151 | rt->rt6i_metric == iter_rt->rt6i_metric && | |
5152 | mlxsw_sp_fib6_entry_rt_find(fib6_entry, rt)) | |
5153 | return fib6_entry; | |
5154 | } | |
5155 | ||
5156 | return NULL; | |
5157 | } | |
5158 | ||
0a7fd1ac IS |
5159 | static void mlxsw_sp_fib6_entry_replace(struct mlxsw_sp *mlxsw_sp, |
5160 | struct mlxsw_sp_fib6_entry *fib6_entry, | |
5161 | bool replace) | |
5162 | { | |
5163 | struct mlxsw_sp_fib_node *fib_node = fib6_entry->common.fib_node; | |
5164 | struct mlxsw_sp_fib6_entry *replaced; | |
5165 | ||
5166 | if (!replace) | |
5167 | return; | |
5168 | ||
5169 | replaced = list_next_entry(fib6_entry, common.list); | |
5170 | ||
5171 | mlxsw_sp_fib6_node_entry_unlink(mlxsw_sp, replaced); | |
5172 | mlxsw_sp_fib6_entry_destroy(mlxsw_sp, replaced); | |
5173 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); | |
5174 | } | |
5175 | ||
428b851f | 5176 | static int mlxsw_sp_router_fib6_add(struct mlxsw_sp *mlxsw_sp, |
0a7fd1ac | 5177 | struct rt6_info *rt, bool replace) |
428b851f IS |
5178 | { |
5179 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
5180 | struct mlxsw_sp_fib_node *fib_node; | |
5181 | int err; | |
5182 | ||
5183 | if (mlxsw_sp->router->aborted) | |
5184 | return 0; | |
5185 | ||
f36f5ac6 IS |
5186 | if (rt->rt6i_src.plen) |
5187 | return -EINVAL; | |
5188 | ||
428b851f IS |
5189 | if (mlxsw_sp_fib6_rt_should_ignore(rt)) |
5190 | return 0; | |
5191 | ||
5192 | fib_node = mlxsw_sp_fib_node_get(mlxsw_sp, rt->rt6i_table->tb6_id, | |
5193 | &rt->rt6i_dst.addr, | |
5194 | sizeof(rt->rt6i_dst.addr), | |
5195 | rt->rt6i_dst.plen, | |
5196 | MLXSW_SP_L3_PROTO_IPV6); | |
5197 | if (IS_ERR(fib_node)) | |
5198 | return PTR_ERR(fib_node); | |
5199 | ||
5200 | /* Before creating a new entry, try to append route to an existing | |
5201 | * multipath entry. | |
5202 | */ | |
0a7fd1ac | 5203 | fib6_entry = mlxsw_sp_fib6_node_mp_entry_find(fib_node, rt, replace); |
428b851f IS |
5204 | if (fib6_entry) { |
5205 | err = mlxsw_sp_fib6_entry_nexthop_add(mlxsw_sp, fib6_entry, rt); | |
5206 | if (err) | |
5207 | goto err_fib6_entry_nexthop_add; | |
5208 | return 0; | |
5209 | } | |
5210 | ||
5211 | fib6_entry = mlxsw_sp_fib6_entry_create(mlxsw_sp, fib_node, rt); | |
5212 | if (IS_ERR(fib6_entry)) { | |
5213 | err = PTR_ERR(fib6_entry); | |
5214 | goto err_fib6_entry_create; | |
5215 | } | |
5216 | ||
0a7fd1ac | 5217 | err = mlxsw_sp_fib6_node_entry_link(mlxsw_sp, fib6_entry, replace); |
428b851f IS |
5218 | if (err) |
5219 | goto err_fib6_node_entry_link; | |
5220 | ||
0a7fd1ac IS |
5221 | mlxsw_sp_fib6_entry_replace(mlxsw_sp, fib6_entry, replace); |
5222 | ||
428b851f IS |
5223 | return 0; |
5224 | ||
5225 | err_fib6_node_entry_link: | |
5226 | mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); | |
5227 | err_fib6_entry_create: | |
5228 | err_fib6_entry_nexthop_add: | |
5229 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); | |
5230 | return err; | |
5231 | } | |
5232 | ||
5233 | static void mlxsw_sp_router_fib6_del(struct mlxsw_sp *mlxsw_sp, | |
5234 | struct rt6_info *rt) | |
5235 | { | |
5236 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
5237 | struct mlxsw_sp_fib_node *fib_node; | |
5238 | ||
5239 | if (mlxsw_sp->router->aborted) | |
5240 | return; | |
5241 | ||
5242 | if (mlxsw_sp_fib6_rt_should_ignore(rt)) | |
5243 | return; | |
5244 | ||
5245 | fib6_entry = mlxsw_sp_fib6_entry_lookup(mlxsw_sp, rt); | |
5246 | if (WARN_ON(!fib6_entry)) | |
5247 | return; | |
5248 | ||
5249 | /* If route is part of a multipath entry, but not the last one | |
5250 | * removed, then only reduce its nexthop group. | |
5251 | */ | |
5252 | if (!list_is_singular(&fib6_entry->rt6_list)) { | |
5253 | mlxsw_sp_fib6_entry_nexthop_del(mlxsw_sp, fib6_entry, rt); | |
5254 | return; | |
5255 | } | |
5256 | ||
5257 | fib_node = fib6_entry->common.fib_node; | |
5258 | ||
5259 | mlxsw_sp_fib6_node_entry_unlink(mlxsw_sp, fib6_entry); | |
5260 | mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); | |
5261 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); | |
5262 | } | |
5263 | ||
bc65a8a4 IS |
5264 | static int __mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp, |
5265 | enum mlxsw_reg_ralxx_protocol proto, | |
5266 | u8 tree_id) | |
b45f64d1 JP |
5267 | { |
5268 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
5269 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
b5d90e6d | 5270 | int i, err; |
b45f64d1 | 5271 | |
bc65a8a4 | 5272 | mlxsw_reg_ralta_pack(ralta_pl, true, proto, tree_id); |
b45f64d1 JP |
5273 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
5274 | if (err) | |
5275 | return err; | |
5276 | ||
bc65a8a4 | 5277 | mlxsw_reg_ralst_pack(ralst_pl, 0xff, tree_id); |
b45f64d1 JP |
5278 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); |
5279 | if (err) | |
5280 | return err; | |
5281 | ||
b5d90e6d | 5282 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 5283 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; |
b5d90e6d IS |
5284 | char raltb_pl[MLXSW_REG_RALTB_LEN]; |
5285 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
b45f64d1 | 5286 | |
bc65a8a4 | 5287 | mlxsw_reg_raltb_pack(raltb_pl, vr->id, proto, tree_id); |
b5d90e6d IS |
5288 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), |
5289 | raltb_pl); | |
5290 | if (err) | |
5291 | return err; | |
5292 | ||
bc65a8a4 IS |
5293 | mlxsw_reg_ralue_pack(ralue_pl, proto, |
5294 | MLXSW_REG_RALUE_OP_WRITE_WRITE, vr->id, 0); | |
b5d90e6d IS |
5295 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); |
5296 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), | |
5297 | ralue_pl); | |
5298 | if (err) | |
5299 | return err; | |
5300 | } | |
5301 | ||
5302 | return 0; | |
b45f64d1 JP |
5303 | } |
5304 | ||
d42b0965 YG |
5305 | static int mlxsw_sp_router_fibmr_add(struct mlxsw_sp *mlxsw_sp, |
5306 | struct mfc_entry_notifier_info *men_info, | |
5307 | bool replace) | |
5308 | { | |
5309 | struct mlxsw_sp_vr *vr; | |
5310 | ||
5311 | if (mlxsw_sp->router->aborted) | |
5312 | return 0; | |
5313 | ||
f8fa9b4e | 5314 | vr = mlxsw_sp_vr_get(mlxsw_sp, men_info->tb_id, NULL); |
d42b0965 YG |
5315 | if (IS_ERR(vr)) |
5316 | return PTR_ERR(vr); | |
5317 | ||
5318 | return mlxsw_sp_mr_route4_add(vr->mr4_table, men_info->mfc, replace); | |
5319 | } | |
5320 | ||
5321 | static void mlxsw_sp_router_fibmr_del(struct mlxsw_sp *mlxsw_sp, | |
5322 | struct mfc_entry_notifier_info *men_info) | |
5323 | { | |
5324 | struct mlxsw_sp_vr *vr; | |
5325 | ||
5326 | if (mlxsw_sp->router->aborted) | |
5327 | return; | |
5328 | ||
5329 | vr = mlxsw_sp_vr_find(mlxsw_sp, men_info->tb_id); | |
5330 | if (WARN_ON(!vr)) | |
5331 | return; | |
5332 | ||
5333 | mlxsw_sp_mr_route4_del(vr->mr4_table, men_info->mfc); | |
5334 | mlxsw_sp_vr_put(vr); | |
5335 | } | |
5336 | ||
5337 | static int | |
5338 | mlxsw_sp_router_fibmr_vif_add(struct mlxsw_sp *mlxsw_sp, | |
5339 | struct vif_entry_notifier_info *ven_info) | |
5340 | { | |
5341 | struct mlxsw_sp_rif *rif; | |
5342 | struct mlxsw_sp_vr *vr; | |
5343 | ||
5344 | if (mlxsw_sp->router->aborted) | |
5345 | return 0; | |
5346 | ||
f8fa9b4e | 5347 | vr = mlxsw_sp_vr_get(mlxsw_sp, ven_info->tb_id, NULL); |
d42b0965 YG |
5348 | if (IS_ERR(vr)) |
5349 | return PTR_ERR(vr); | |
5350 | ||
5351 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, ven_info->dev); | |
5352 | return mlxsw_sp_mr_vif_add(vr->mr4_table, ven_info->dev, | |
5353 | ven_info->vif_index, | |
5354 | ven_info->vif_flags, rif); | |
5355 | } | |
5356 | ||
5357 | static void | |
5358 | mlxsw_sp_router_fibmr_vif_del(struct mlxsw_sp *mlxsw_sp, | |
5359 | struct vif_entry_notifier_info *ven_info) | |
5360 | { | |
5361 | struct mlxsw_sp_vr *vr; | |
5362 | ||
5363 | if (mlxsw_sp->router->aborted) | |
5364 | return; | |
5365 | ||
5366 | vr = mlxsw_sp_vr_find(mlxsw_sp, ven_info->tb_id); | |
5367 | if (WARN_ON(!vr)) | |
5368 | return; | |
5369 | ||
5370 | mlxsw_sp_mr_vif_del(vr->mr4_table, ven_info->vif_index); | |
5371 | mlxsw_sp_vr_put(vr); | |
5372 | } | |
5373 | ||
bc65a8a4 IS |
5374 | static int mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp) |
5375 | { | |
5376 | enum mlxsw_reg_ralxx_protocol proto = MLXSW_REG_RALXX_PROTOCOL_IPV4; | |
5377 | int err; | |
5378 | ||
5379 | err = __mlxsw_sp_router_set_abort_trap(mlxsw_sp, proto, | |
5380 | MLXSW_SP_LPM_TREE_MIN); | |
5381 | if (err) | |
5382 | return err; | |
5383 | ||
d42b0965 YG |
5384 | /* The multicast router code does not need an abort trap as by default, |
5385 | * packets that don't match any routes are trapped to the CPU. | |
5386 | */ | |
5387 | ||
bc65a8a4 IS |
5388 | proto = MLXSW_REG_RALXX_PROTOCOL_IPV6; |
5389 | return __mlxsw_sp_router_set_abort_trap(mlxsw_sp, proto, | |
5390 | MLXSW_SP_LPM_TREE_MIN + 1); | |
5391 | } | |
5392 | ||
9aecce1c IS |
5393 | static void mlxsw_sp_fib4_node_flush(struct mlxsw_sp *mlxsw_sp, |
5394 | struct mlxsw_sp_fib_node *fib_node) | |
5395 | { | |
4f1c7f1f | 5396 | struct mlxsw_sp_fib4_entry *fib4_entry, *tmp; |
9aecce1c | 5397 | |
4f1c7f1f IS |
5398 | list_for_each_entry_safe(fib4_entry, tmp, &fib_node->entry_list, |
5399 | common.list) { | |
5400 | bool do_break = &tmp->common.list == &fib_node->entry_list; | |
9aecce1c | 5401 | |
4f1c7f1f IS |
5402 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib4_entry); |
5403 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); | |
731ea1ca | 5404 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); |
9aecce1c IS |
5405 | /* Break when entry list is empty and node was freed. |
5406 | * Otherwise, we'll access freed memory in the next | |
5407 | * iteration. | |
5408 | */ | |
5409 | if (do_break) | |
5410 | break; | |
5411 | } | |
5412 | } | |
5413 | ||
428b851f IS |
5414 | static void mlxsw_sp_fib6_node_flush(struct mlxsw_sp *mlxsw_sp, |
5415 | struct mlxsw_sp_fib_node *fib_node) | |
5416 | { | |
5417 | struct mlxsw_sp_fib6_entry *fib6_entry, *tmp; | |
5418 | ||
5419 | list_for_each_entry_safe(fib6_entry, tmp, &fib_node->entry_list, | |
5420 | common.list) { | |
5421 | bool do_break = &tmp->common.list == &fib_node->entry_list; | |
5422 | ||
5423 | mlxsw_sp_fib6_node_entry_unlink(mlxsw_sp, fib6_entry); | |
5424 | mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); | |
5425 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); | |
5426 | if (do_break) | |
5427 | break; | |
5428 | } | |
5429 | } | |
5430 | ||
9aecce1c IS |
5431 | static void mlxsw_sp_fib_node_flush(struct mlxsw_sp *mlxsw_sp, |
5432 | struct mlxsw_sp_fib_node *fib_node) | |
5433 | { | |
76610ebb | 5434 | switch (fib_node->fib->proto) { |
9aecce1c IS |
5435 | case MLXSW_SP_L3_PROTO_IPV4: |
5436 | mlxsw_sp_fib4_node_flush(mlxsw_sp, fib_node); | |
5437 | break; | |
5438 | case MLXSW_SP_L3_PROTO_IPV6: | |
428b851f | 5439 | mlxsw_sp_fib6_node_flush(mlxsw_sp, fib_node); |
9aecce1c IS |
5440 | break; |
5441 | } | |
5442 | } | |
5443 | ||
76610ebb IS |
5444 | static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp, |
5445 | struct mlxsw_sp_vr *vr, | |
5446 | enum mlxsw_sp_l3proto proto) | |
b45f64d1 | 5447 | { |
76610ebb | 5448 | struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); |
9aecce1c | 5449 | struct mlxsw_sp_fib_node *fib_node, *tmp; |
76610ebb IS |
5450 | |
5451 | list_for_each_entry_safe(fib_node, tmp, &fib->node_list, list) { | |
5452 | bool do_break = &tmp->list == &fib->node_list; | |
5453 | ||
5454 | mlxsw_sp_fib_node_flush(mlxsw_sp, fib_node); | |
5455 | if (do_break) | |
5456 | break; | |
5457 | } | |
5458 | } | |
5459 | ||
5460 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp) | |
5461 | { | |
b45f64d1 | 5462 | int i; |
b45f64d1 | 5463 | |
c1a38311 | 5464 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 5465 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; |
ac571de9 | 5466 | |
76610ebb | 5467 | if (!mlxsw_sp_vr_is_used(vr)) |
b45f64d1 | 5468 | continue; |
d42b0965 YG |
5469 | |
5470 | mlxsw_sp_mr_table_flush(vr->mr4_table); | |
76610ebb | 5471 | mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4); |
a3d9bc50 IS |
5472 | |
5473 | /* If virtual router was only used for IPv4, then it's no | |
5474 | * longer used. | |
5475 | */ | |
5476 | if (!mlxsw_sp_vr_is_used(vr)) | |
5477 | continue; | |
5478 | mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV6); | |
b45f64d1 | 5479 | } |
ac571de9 IS |
5480 | } |
5481 | ||
bc65a8a4 | 5482 | static void mlxsw_sp_router_fib_abort(struct mlxsw_sp *mlxsw_sp) |
ac571de9 IS |
5483 | { |
5484 | int err; | |
5485 | ||
9011b677 | 5486 | if (mlxsw_sp->router->aborted) |
d331d303 IS |
5487 | return; |
5488 | dev_warn(mlxsw_sp->bus_info->dev, "FIB abort triggered. Note that FIB entries are no longer being offloaded to this device.\n"); | |
ac571de9 | 5489 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
9011b677 | 5490 | mlxsw_sp->router->aborted = true; |
b45f64d1 JP |
5491 | err = mlxsw_sp_router_set_abort_trap(mlxsw_sp); |
5492 | if (err) | |
5493 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set abort trap.\n"); | |
5494 | } | |
5495 | ||
3057224e | 5496 | struct mlxsw_sp_fib_event_work { |
a0e4761d | 5497 | struct work_struct work; |
ad178c8e | 5498 | union { |
428b851f | 5499 | struct fib6_entry_notifier_info fen6_info; |
ad178c8e | 5500 | struct fib_entry_notifier_info fen_info; |
5d7bfd14 | 5501 | struct fib_rule_notifier_info fr_info; |
ad178c8e | 5502 | struct fib_nh_notifier_info fnh_info; |
d42b0965 YG |
5503 | struct mfc_entry_notifier_info men_info; |
5504 | struct vif_entry_notifier_info ven_info; | |
ad178c8e | 5505 | }; |
3057224e IS |
5506 | struct mlxsw_sp *mlxsw_sp; |
5507 | unsigned long event; | |
5508 | }; | |
5509 | ||
66a5763a | 5510 | static void mlxsw_sp_router_fib4_event_work(struct work_struct *work) |
b45f64d1 | 5511 | { |
3057224e | 5512 | struct mlxsw_sp_fib_event_work *fib_work = |
a0e4761d | 5513 | container_of(work, struct mlxsw_sp_fib_event_work, work); |
3057224e | 5514 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; |
599cf8f9 | 5515 | bool replace, append; |
b45f64d1 JP |
5516 | int err; |
5517 | ||
3057224e IS |
5518 | /* Protect internal structures from changes */ |
5519 | rtnl_lock(); | |
5520 | switch (fib_work->event) { | |
599cf8f9 | 5521 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 5522 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
b45f64d1 | 5523 | case FIB_EVENT_ENTRY_ADD: |
599cf8f9 | 5524 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; |
4283bce5 IS |
5525 | append = fib_work->event == FIB_EVENT_ENTRY_APPEND; |
5526 | err = mlxsw_sp_router_fib4_add(mlxsw_sp, &fib_work->fen_info, | |
599cf8f9 | 5527 | replace, append); |
b45f64d1 | 5528 | if (err) |
bc65a8a4 | 5529 | mlxsw_sp_router_fib_abort(mlxsw_sp); |
3057224e | 5530 | fib_info_put(fib_work->fen_info.fi); |
b45f64d1 JP |
5531 | break; |
5532 | case FIB_EVENT_ENTRY_DEL: | |
3057224e IS |
5533 | mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info); |
5534 | fib_info_put(fib_work->fen_info.fi); | |
b45f64d1 | 5535 | break; |
1f279233 DA |
5536 | case FIB_EVENT_RULE_ADD: |
5537 | /* if we get here, a rule was added that we do not support. | |
5538 | * just do the fib_abort | |
5539 | */ | |
5540 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
b45f64d1 | 5541 | break; |
ad178c8e IS |
5542 | case FIB_EVENT_NH_ADD: /* fall through */ |
5543 | case FIB_EVENT_NH_DEL: | |
0e6ea2a4 IS |
5544 | mlxsw_sp_nexthop4_event(mlxsw_sp, fib_work->event, |
5545 | fib_work->fnh_info.fib_nh); | |
ad178c8e IS |
5546 | fib_info_put(fib_work->fnh_info.fib_nh->nh_parent); |
5547 | break; | |
b45f64d1 | 5548 | } |
3057224e IS |
5549 | rtnl_unlock(); |
5550 | kfree(fib_work); | |
5551 | } | |
5552 | ||
66a5763a IS |
5553 | static void mlxsw_sp_router_fib6_event_work(struct work_struct *work) |
5554 | { | |
583419fd IS |
5555 | struct mlxsw_sp_fib_event_work *fib_work = |
5556 | container_of(work, struct mlxsw_sp_fib_event_work, work); | |
5557 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; | |
0a7fd1ac | 5558 | bool replace; |
428b851f | 5559 | int err; |
583419fd IS |
5560 | |
5561 | rtnl_lock(); | |
5562 | switch (fib_work->event) { | |
0a7fd1ac | 5563 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
428b851f | 5564 | case FIB_EVENT_ENTRY_ADD: |
0a7fd1ac | 5565 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; |
428b851f | 5566 | err = mlxsw_sp_router_fib6_add(mlxsw_sp, |
0a7fd1ac | 5567 | fib_work->fen6_info.rt, replace); |
428b851f IS |
5568 | if (err) |
5569 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
5570 | mlxsw_sp_rt6_release(fib_work->fen6_info.rt); | |
5571 | break; | |
5572 | case FIB_EVENT_ENTRY_DEL: | |
5573 | mlxsw_sp_router_fib6_del(mlxsw_sp, fib_work->fen6_info.rt); | |
5574 | mlxsw_sp_rt6_release(fib_work->fen6_info.rt); | |
5575 | break; | |
1f279233 DA |
5576 | case FIB_EVENT_RULE_ADD: |
5577 | /* if we get here, a rule was added that we do not support. | |
5578 | * just do the fib_abort | |
5579 | */ | |
5580 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
583419fd IS |
5581 | break; |
5582 | } | |
5583 | rtnl_unlock(); | |
5584 | kfree(fib_work); | |
66a5763a IS |
5585 | } |
5586 | ||
d42b0965 YG |
5587 | static void mlxsw_sp_router_fibmr_event_work(struct work_struct *work) |
5588 | { | |
5589 | struct mlxsw_sp_fib_event_work *fib_work = | |
5590 | container_of(work, struct mlxsw_sp_fib_event_work, work); | |
5591 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; | |
d42b0965 YG |
5592 | bool replace; |
5593 | int err; | |
5594 | ||
5595 | rtnl_lock(); | |
5596 | switch (fib_work->event) { | |
5597 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ | |
5598 | case FIB_EVENT_ENTRY_ADD: | |
5599 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; | |
5600 | ||
5601 | err = mlxsw_sp_router_fibmr_add(mlxsw_sp, &fib_work->men_info, | |
5602 | replace); | |
5603 | if (err) | |
5604 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
5605 | ipmr_cache_put(fib_work->men_info.mfc); | |
5606 | break; | |
5607 | case FIB_EVENT_ENTRY_DEL: | |
5608 | mlxsw_sp_router_fibmr_del(mlxsw_sp, &fib_work->men_info); | |
5609 | ipmr_cache_put(fib_work->men_info.mfc); | |
5610 | break; | |
5611 | case FIB_EVENT_VIF_ADD: | |
5612 | err = mlxsw_sp_router_fibmr_vif_add(mlxsw_sp, | |
5613 | &fib_work->ven_info); | |
5614 | if (err) | |
5615 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
5616 | dev_put(fib_work->ven_info.dev); | |
5617 | break; | |
5618 | case FIB_EVENT_VIF_DEL: | |
5619 | mlxsw_sp_router_fibmr_vif_del(mlxsw_sp, | |
5620 | &fib_work->ven_info); | |
5621 | dev_put(fib_work->ven_info.dev); | |
5622 | break; | |
1f279233 DA |
5623 | case FIB_EVENT_RULE_ADD: |
5624 | /* if we get here, a rule was added that we do not support. | |
5625 | * just do the fib_abort | |
5626 | */ | |
5627 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
d42b0965 YG |
5628 | break; |
5629 | } | |
5630 | rtnl_unlock(); | |
5631 | kfree(fib_work); | |
5632 | } | |
5633 | ||
66a5763a IS |
5634 | static void mlxsw_sp_router_fib4_event(struct mlxsw_sp_fib_event_work *fib_work, |
5635 | struct fib_notifier_info *info) | |
5636 | { | |
3c75f9b1 | 5637 | struct fib_entry_notifier_info *fen_info; |
3c75f9b1 DA |
5638 | struct fib_nh_notifier_info *fnh_info; |
5639 | ||
66a5763a IS |
5640 | switch (fib_work->event) { |
5641 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ | |
5642 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ | |
5643 | case FIB_EVENT_ENTRY_ADD: /* fall through */ | |
5644 | case FIB_EVENT_ENTRY_DEL: | |
3c75f9b1 DA |
5645 | fen_info = container_of(info, struct fib_entry_notifier_info, |
5646 | info); | |
5647 | fib_work->fen_info = *fen_info; | |
5648 | /* Take reference on fib_info to prevent it from being | |
66a5763a IS |
5649 | * freed while work is queued. Release it afterwards. |
5650 | */ | |
5651 | fib_info_hold(fib_work->fen_info.fi); | |
5652 | break; | |
66a5763a IS |
5653 | case FIB_EVENT_NH_ADD: /* fall through */ |
5654 | case FIB_EVENT_NH_DEL: | |
3c75f9b1 DA |
5655 | fnh_info = container_of(info, struct fib_nh_notifier_info, |
5656 | info); | |
5657 | fib_work->fnh_info = *fnh_info; | |
66a5763a IS |
5658 | fib_info_hold(fib_work->fnh_info.fib_nh->nh_parent); |
5659 | break; | |
5660 | } | |
5661 | } | |
5662 | ||
5663 | static void mlxsw_sp_router_fib6_event(struct mlxsw_sp_fib_event_work *fib_work, | |
5664 | struct fib_notifier_info *info) | |
5665 | { | |
3c75f9b1 | 5666 | struct fib6_entry_notifier_info *fen6_info; |
3c75f9b1 | 5667 | |
583419fd | 5668 | switch (fib_work->event) { |
0a7fd1ac | 5669 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
428b851f IS |
5670 | case FIB_EVENT_ENTRY_ADD: /* fall through */ |
5671 | case FIB_EVENT_ENTRY_DEL: | |
3c75f9b1 DA |
5672 | fen6_info = container_of(info, struct fib6_entry_notifier_info, |
5673 | info); | |
5674 | fib_work->fen6_info = *fen6_info; | |
428b851f IS |
5675 | rt6_hold(fib_work->fen6_info.rt); |
5676 | break; | |
583419fd | 5677 | } |
66a5763a IS |
5678 | } |
5679 | ||
d42b0965 YG |
5680 | static void |
5681 | mlxsw_sp_router_fibmr_event(struct mlxsw_sp_fib_event_work *fib_work, | |
5682 | struct fib_notifier_info *info) | |
5683 | { | |
5684 | switch (fib_work->event) { | |
5685 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ | |
5686 | case FIB_EVENT_ENTRY_ADD: /* fall through */ | |
5687 | case FIB_EVENT_ENTRY_DEL: | |
5688 | memcpy(&fib_work->men_info, info, sizeof(fib_work->men_info)); | |
5689 | ipmr_cache_hold(fib_work->men_info.mfc); | |
5690 | break; | |
5691 | case FIB_EVENT_VIF_ADD: /* fall through */ | |
5692 | case FIB_EVENT_VIF_DEL: | |
5693 | memcpy(&fib_work->ven_info, info, sizeof(fib_work->ven_info)); | |
5694 | dev_hold(fib_work->ven_info.dev); | |
5695 | break; | |
1f279233 DA |
5696 | } |
5697 | } | |
5698 | ||
5699 | static int mlxsw_sp_router_fib_rule_event(unsigned long event, | |
5700 | struct fib_notifier_info *info, | |
5701 | struct mlxsw_sp *mlxsw_sp) | |
5702 | { | |
5703 | struct netlink_ext_ack *extack = info->extack; | |
5704 | struct fib_rule_notifier_info *fr_info; | |
5705 | struct fib_rule *rule; | |
5706 | int err = 0; | |
5707 | ||
5708 | /* nothing to do at the moment */ | |
5709 | if (event == FIB_EVENT_RULE_DEL) | |
5710 | return 0; | |
5711 | ||
5712 | if (mlxsw_sp->router->aborted) | |
5713 | return 0; | |
5714 | ||
5715 | fr_info = container_of(info, struct fib_rule_notifier_info, info); | |
5716 | rule = fr_info->rule; | |
5717 | ||
5718 | switch (info->family) { | |
5719 | case AF_INET: | |
5720 | if (!fib4_rule_default(rule) && !rule->l3mdev) | |
5721 | err = -1; | |
5722 | break; | |
5723 | case AF_INET6: | |
5724 | if (!fib6_rule_default(rule) && !rule->l3mdev) | |
5725 | err = -1; | |
5726 | break; | |
5727 | case RTNL_FAMILY_IPMR: | |
5728 | if (!ipmr_rule_default(rule) && !rule->l3mdev) | |
5729 | err = -1; | |
d42b0965 YG |
5730 | break; |
5731 | } | |
1f279233 DA |
5732 | |
5733 | if (err < 0) | |
5734 | NL_SET_ERR_MSG(extack, "spectrum: FIB rules not supported. Aborting offload"); | |
5735 | ||
5736 | return err; | |
d42b0965 YG |
5737 | } |
5738 | ||
3057224e IS |
5739 | /* Called with rcu_read_lock() */ |
5740 | static int mlxsw_sp_router_fib_event(struct notifier_block *nb, | |
5741 | unsigned long event, void *ptr) | |
5742 | { | |
3057224e IS |
5743 | struct mlxsw_sp_fib_event_work *fib_work; |
5744 | struct fib_notifier_info *info = ptr; | |
7e39d115 | 5745 | struct mlxsw_sp_router *router; |
1f279233 | 5746 | int err; |
3057224e | 5747 | |
8e29f979 | 5748 | if (!net_eq(info->net, &init_net) || |
664375e9 YG |
5749 | (info->family != AF_INET && info->family != AF_INET6 && |
5750 | info->family != RTNL_FAMILY_IPMR)) | |
3057224e IS |
5751 | return NOTIFY_DONE; |
5752 | ||
1f279233 DA |
5753 | router = container_of(nb, struct mlxsw_sp_router, fib_nb); |
5754 | ||
5755 | switch (event) { | |
5756 | case FIB_EVENT_RULE_ADD: /* fall through */ | |
5757 | case FIB_EVENT_RULE_DEL: | |
5758 | err = mlxsw_sp_router_fib_rule_event(event, info, | |
5759 | router->mlxsw_sp); | |
5760 | if (!err) | |
5761 | return NOTIFY_DONE; | |
5762 | } | |
5763 | ||
3057224e IS |
5764 | fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC); |
5765 | if (WARN_ON(!fib_work)) | |
5766 | return NOTIFY_BAD; | |
5767 | ||
7e39d115 | 5768 | fib_work->mlxsw_sp = router->mlxsw_sp; |
3057224e IS |
5769 | fib_work->event = event; |
5770 | ||
66a5763a IS |
5771 | switch (info->family) { |
5772 | case AF_INET: | |
5773 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fib4_event_work); | |
5774 | mlxsw_sp_router_fib4_event(fib_work, info); | |
3057224e | 5775 | break; |
66a5763a IS |
5776 | case AF_INET6: |
5777 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fib6_event_work); | |
5778 | mlxsw_sp_router_fib6_event(fib_work, info); | |
ad178c8e | 5779 | break; |
d42b0965 YG |
5780 | case RTNL_FAMILY_IPMR: |
5781 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fibmr_event_work); | |
5782 | mlxsw_sp_router_fibmr_event(fib_work, info); | |
5783 | break; | |
3057224e IS |
5784 | } |
5785 | ||
a0e4761d | 5786 | mlxsw_core_schedule_work(&fib_work->work); |
3057224e | 5787 | |
b45f64d1 JP |
5788 | return NOTIFY_DONE; |
5789 | } | |
5790 | ||
4724ba56 IS |
5791 | static struct mlxsw_sp_rif * |
5792 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
5793 | const struct net_device *dev) | |
5794 | { | |
5795 | int i; | |
5796 | ||
5797 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
5f9efffb IS |
5798 | if (mlxsw_sp->router->rifs[i] && |
5799 | mlxsw_sp->router->rifs[i]->dev == dev) | |
5800 | return mlxsw_sp->router->rifs[i]; | |
4724ba56 IS |
5801 | |
5802 | return NULL; | |
5803 | } | |
5804 | ||
5805 | static int mlxsw_sp_router_rif_disable(struct mlxsw_sp *mlxsw_sp, u16 rif) | |
5806 | { | |
5807 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
5808 | int err; | |
5809 | ||
5810 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif); | |
5811 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
5812 | if (WARN_ON_ONCE(err)) | |
5813 | return err; | |
5814 | ||
5815 | mlxsw_reg_ritr_enable_set(ritr_pl, false); | |
5816 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
5817 | } | |
5818 | ||
5819 | static void mlxsw_sp_router_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
bf95233e | 5820 | struct mlxsw_sp_rif *rif) |
4724ba56 | 5821 | { |
bf95233e AS |
5822 | mlxsw_sp_router_rif_disable(mlxsw_sp, rif->rif_index); |
5823 | mlxsw_sp_nexthop_rif_gone_sync(mlxsw_sp, rif); | |
5824 | mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, rif); | |
4724ba56 IS |
5825 | } |
5826 | ||
5ea1237f AS |
5827 | static bool |
5828 | mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *rif, struct net_device *dev, | |
5829 | unsigned long event) | |
4724ba56 | 5830 | { |
5ea1237f AS |
5831 | struct inet6_dev *inet6_dev; |
5832 | bool addr_list_empty = true; | |
5833 | struct in_device *idev; | |
5834 | ||
4724ba56 IS |
5835 | switch (event) { |
5836 | case NETDEV_UP: | |
f1b1f273 | 5837 | return rif == NULL; |
4724ba56 | 5838 | case NETDEV_DOWN: |
5ea1237f AS |
5839 | idev = __in_dev_get_rtnl(dev); |
5840 | if (idev && idev->ifa_list) | |
5841 | addr_list_empty = false; | |
5842 | ||
5843 | inet6_dev = __in6_dev_get(dev); | |
5844 | if (addr_list_empty && inet6_dev && | |
5845 | !list_empty(&inet6_dev->addr_list)) | |
5846 | addr_list_empty = false; | |
5847 | ||
5848 | if (rif && addr_list_empty && | |
bf95233e | 5849 | !netif_is_l3_slave(rif->dev)) |
4724ba56 IS |
5850 | return true; |
5851 | /* It is possible we already removed the RIF ourselves | |
5852 | * if it was assigned to a netdev that is now a bridge | |
5853 | * or LAG slave. | |
5854 | */ | |
5855 | return false; | |
5856 | } | |
5857 | ||
5858 | return false; | |
5859 | } | |
5860 | ||
e4f3c1c1 IS |
5861 | static enum mlxsw_sp_rif_type |
5862 | mlxsw_sp_dev_rif_type(const struct mlxsw_sp *mlxsw_sp, | |
5863 | const struct net_device *dev) | |
5864 | { | |
5865 | enum mlxsw_sp_fid_type type; | |
5866 | ||
6ddb7426 PM |
5867 | if (mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, NULL)) |
5868 | return MLXSW_SP_RIF_TYPE_IPIP_LB; | |
5869 | ||
5870 | /* Otherwise RIF type is derived from the type of the underlying FID. */ | |
e4f3c1c1 IS |
5871 | if (is_vlan_dev(dev) && netif_is_bridge_master(vlan_dev_real_dev(dev))) |
5872 | type = MLXSW_SP_FID_TYPE_8021Q; | |
5873 | else if (netif_is_bridge_master(dev) && br_vlan_enabled(dev)) | |
5874 | type = MLXSW_SP_FID_TYPE_8021Q; | |
5875 | else if (netif_is_bridge_master(dev)) | |
5876 | type = MLXSW_SP_FID_TYPE_8021D; | |
5877 | else | |
5878 | type = MLXSW_SP_FID_TYPE_RFID; | |
5879 | ||
5880 | return mlxsw_sp_fid_type_rif_type(mlxsw_sp, type); | |
5881 | } | |
5882 | ||
de5ed99e | 5883 | static int mlxsw_sp_rif_index_alloc(struct mlxsw_sp *mlxsw_sp, u16 *p_rif_index) |
4724ba56 IS |
5884 | { |
5885 | int i; | |
5886 | ||
de5ed99e IS |
5887 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) { |
5888 | if (!mlxsw_sp->router->rifs[i]) { | |
5889 | *p_rif_index = i; | |
5890 | return 0; | |
5891 | } | |
5892 | } | |
4724ba56 | 5893 | |
de5ed99e | 5894 | return -ENOBUFS; |
4724ba56 IS |
5895 | } |
5896 | ||
e4f3c1c1 IS |
5897 | static struct mlxsw_sp_rif *mlxsw_sp_rif_alloc(size_t rif_size, u16 rif_index, |
5898 | u16 vr_id, | |
5899 | struct net_device *l3_dev) | |
4724ba56 | 5900 | { |
bf95233e | 5901 | struct mlxsw_sp_rif *rif; |
4724ba56 | 5902 | |
e4f3c1c1 | 5903 | rif = kzalloc(rif_size, GFP_KERNEL); |
bf95233e | 5904 | if (!rif) |
4724ba56 IS |
5905 | return NULL; |
5906 | ||
bf95233e AS |
5907 | INIT_LIST_HEAD(&rif->nexthop_list); |
5908 | INIT_LIST_HEAD(&rif->neigh_list); | |
5909 | ether_addr_copy(rif->addr, l3_dev->dev_addr); | |
5910 | rif->mtu = l3_dev->mtu; | |
5911 | rif->vr_id = vr_id; | |
5912 | rif->dev = l3_dev; | |
5913 | rif->rif_index = rif_index; | |
4724ba56 | 5914 | |
bf95233e | 5915 | return rif; |
4724ba56 IS |
5916 | } |
5917 | ||
5f9efffb IS |
5918 | struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp, |
5919 | u16 rif_index) | |
5920 | { | |
5921 | return mlxsw_sp->router->rifs[rif_index]; | |
5922 | } | |
5923 | ||
fd1b9d41 AS |
5924 | u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif) |
5925 | { | |
5926 | return rif->rif_index; | |
5927 | } | |
5928 | ||
92107cfb PM |
5929 | u16 mlxsw_sp_ipip_lb_rif_index(const struct mlxsw_sp_rif_ipip_lb *lb_rif) |
5930 | { | |
5931 | return lb_rif->common.rif_index; | |
5932 | } | |
5933 | ||
5934 | u16 mlxsw_sp_ipip_lb_ul_vr_id(const struct mlxsw_sp_rif_ipip_lb *lb_rif) | |
5935 | { | |
5936 | return lb_rif->ul_vr_id; | |
5937 | } | |
5938 | ||
fd1b9d41 AS |
5939 | int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif) |
5940 | { | |
5941 | return rif->dev->ifindex; | |
5942 | } | |
5943 | ||
91e4d59a YG |
5944 | const struct net_device *mlxsw_sp_rif_dev(const struct mlxsw_sp_rif *rif) |
5945 | { | |
5946 | return rif->dev; | |
5947 | } | |
5948 | ||
4724ba56 | 5949 | static struct mlxsw_sp_rif * |
e4f3c1c1 | 5950 | mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp, |
f8fa9b4e DA |
5951 | const struct mlxsw_sp_rif_params *params, |
5952 | struct netlink_ext_ack *extack) | |
4724ba56 | 5953 | { |
e4f3c1c1 IS |
5954 | u32 tb_id = l3mdev_fib_table(params->dev); |
5955 | const struct mlxsw_sp_rif_ops *ops; | |
010cadf9 | 5956 | struct mlxsw_sp_fid *fid = NULL; |
e4f3c1c1 | 5957 | enum mlxsw_sp_rif_type type; |
bf95233e | 5958 | struct mlxsw_sp_rif *rif; |
a1107487 IS |
5959 | struct mlxsw_sp_vr *vr; |
5960 | u16 rif_index; | |
4724ba56 IS |
5961 | int err; |
5962 | ||
e4f3c1c1 IS |
5963 | type = mlxsw_sp_dev_rif_type(mlxsw_sp, params->dev); |
5964 | ops = mlxsw_sp->router->rif_ops_arr[type]; | |
5965 | ||
f8fa9b4e | 5966 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN, extack); |
c9ec53f0 IS |
5967 | if (IS_ERR(vr)) |
5968 | return ERR_CAST(vr); | |
28a04c7b | 5969 | vr->rif_count++; |
c9ec53f0 | 5970 | |
de5ed99e | 5971 | err = mlxsw_sp_rif_index_alloc(mlxsw_sp, &rif_index); |
f8fa9b4e DA |
5972 | if (err) { |
5973 | NL_SET_ERR_MSG(extack, "spectrum: Exceeded number of supported router interfaces"); | |
de5ed99e | 5974 | goto err_rif_index_alloc; |
f8fa9b4e | 5975 | } |
4724ba56 | 5976 | |
e4f3c1c1 | 5977 | rif = mlxsw_sp_rif_alloc(ops->rif_size, rif_index, vr->id, params->dev); |
a13a594d IS |
5978 | if (!rif) { |
5979 | err = -ENOMEM; | |
5980 | goto err_rif_alloc; | |
5981 | } | |
e4f3c1c1 IS |
5982 | rif->mlxsw_sp = mlxsw_sp; |
5983 | rif->ops = ops; | |
a13a594d | 5984 | |
010cadf9 PM |
5985 | if (ops->fid_get) { |
5986 | fid = ops->fid_get(rif); | |
5987 | if (IS_ERR(fid)) { | |
5988 | err = PTR_ERR(fid); | |
5989 | goto err_fid_get; | |
5990 | } | |
5991 | rif->fid = fid; | |
4d93ceeb IS |
5992 | } |
5993 | ||
e4f3c1c1 IS |
5994 | if (ops->setup) |
5995 | ops->setup(rif, params); | |
5996 | ||
5997 | err = ops->configure(rif); | |
4724ba56 | 5998 | if (err) |
e4f3c1c1 | 5999 | goto err_configure; |
4724ba56 | 6000 | |
d42b0965 YG |
6001 | err = mlxsw_sp_mr_rif_add(vr->mr4_table, rif); |
6002 | if (err) | |
6003 | goto err_mr_rif_add; | |
6004 | ||
e4f3c1c1 | 6005 | mlxsw_sp_rif_counters_alloc(rif); |
5f9efffb | 6006 | mlxsw_sp->router->rifs[rif_index] = rif; |
4724ba56 | 6007 | |
bf95233e | 6008 | return rif; |
4724ba56 | 6009 | |
d42b0965 YG |
6010 | err_mr_rif_add: |
6011 | ops->deconfigure(rif); | |
e4f3c1c1 | 6012 | err_configure: |
010cadf9 PM |
6013 | if (fid) |
6014 | mlxsw_sp_fid_put(fid); | |
a1107487 | 6015 | err_fid_get: |
e4f3c1c1 IS |
6016 | kfree(rif); |
6017 | err_rif_alloc: | |
de5ed99e | 6018 | err_rif_index_alloc: |
28a04c7b | 6019 | vr->rif_count--; |
c9ec53f0 | 6020 | mlxsw_sp_vr_put(vr); |
4724ba56 IS |
6021 | return ERR_PTR(err); |
6022 | } | |
6023 | ||
e4f3c1c1 | 6024 | void mlxsw_sp_rif_destroy(struct mlxsw_sp_rif *rif) |
4724ba56 | 6025 | { |
e4f3c1c1 IS |
6026 | const struct mlxsw_sp_rif_ops *ops = rif->ops; |
6027 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
a1107487 | 6028 | struct mlxsw_sp_fid *fid = rif->fid; |
e4f3c1c1 | 6029 | struct mlxsw_sp_vr *vr; |
4724ba56 | 6030 | |
bf95233e | 6031 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif); |
e4f3c1c1 | 6032 | vr = &mlxsw_sp->router->vrs[rif->vr_id]; |
e0c0afd8 | 6033 | |
e4f3c1c1 | 6034 | mlxsw_sp->router->rifs[rif->rif_index] = NULL; |
e4f3c1c1 | 6035 | mlxsw_sp_rif_counters_free(rif); |
d42b0965 | 6036 | mlxsw_sp_mr_rif_del(vr->mr4_table, rif); |
e4f3c1c1 | 6037 | ops->deconfigure(rif); |
010cadf9 PM |
6038 | if (fid) |
6039 | /* Loopback RIFs are not associated with a FID. */ | |
6040 | mlxsw_sp_fid_put(fid); | |
e4f3c1c1 | 6041 | kfree(rif); |
28a04c7b | 6042 | vr->rif_count--; |
c9ec53f0 | 6043 | mlxsw_sp_vr_put(vr); |
4724ba56 IS |
6044 | } |
6045 | ||
e4f3c1c1 IS |
6046 | static void |
6047 | mlxsw_sp_rif_subport_params_init(struct mlxsw_sp_rif_params *params, | |
6048 | struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) | |
6049 | { | |
6050 | struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; | |
6051 | ||
6052 | params->vid = mlxsw_sp_port_vlan->vid; | |
6053 | params->lag = mlxsw_sp_port->lagged; | |
6054 | if (params->lag) | |
6055 | params->lag_id = mlxsw_sp_port->lag_id; | |
6056 | else | |
6057 | params->system_port = mlxsw_sp_port->local_port; | |
6058 | } | |
6059 | ||
7cbecf24 | 6060 | static int |
a1107487 | 6061 | mlxsw_sp_port_vlan_router_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, |
f8fa9b4e DA |
6062 | struct net_device *l3_dev, |
6063 | struct netlink_ext_ack *extack) | |
4724ba56 | 6064 | { |
7cbecf24 | 6065 | struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; |
1b8f09a0 | 6066 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
7cbecf24 | 6067 | u16 vid = mlxsw_sp_port_vlan->vid; |
bf95233e | 6068 | struct mlxsw_sp_rif *rif; |
a1107487 | 6069 | struct mlxsw_sp_fid *fid; |
03ea01e9 | 6070 | int err; |
4724ba56 | 6071 | |
1b8f09a0 | 6072 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
bf95233e | 6073 | if (!rif) { |
e4f3c1c1 IS |
6074 | struct mlxsw_sp_rif_params params = { |
6075 | .dev = l3_dev, | |
6076 | }; | |
6077 | ||
6078 | mlxsw_sp_rif_subport_params_init(¶ms, mlxsw_sp_port_vlan); | |
f8fa9b4e | 6079 | rif = mlxsw_sp_rif_create(mlxsw_sp, ¶ms, extack); |
bf95233e AS |
6080 | if (IS_ERR(rif)) |
6081 | return PTR_ERR(rif); | |
4724ba56 IS |
6082 | } |
6083 | ||
a1107487 | 6084 | /* FID was already created, just take a reference */ |
e4f3c1c1 | 6085 | fid = rif->ops->fid_get(rif); |
a1107487 IS |
6086 | err = mlxsw_sp_fid_port_vid_map(fid, mlxsw_sp_port, vid); |
6087 | if (err) | |
6088 | goto err_fid_port_vid_map; | |
6089 | ||
7cbecf24 | 6090 | err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false); |
03ea01e9 IS |
6091 | if (err) |
6092 | goto err_port_vid_learning_set; | |
6093 | ||
7cbecf24 | 6094 | err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, |
03ea01e9 IS |
6095 | BR_STATE_FORWARDING); |
6096 | if (err) | |
6097 | goto err_port_vid_stp_set; | |
6098 | ||
a1107487 | 6099 | mlxsw_sp_port_vlan->fid = fid; |
4724ba56 | 6100 | |
4724ba56 | 6101 | return 0; |
03ea01e9 IS |
6102 | |
6103 | err_port_vid_stp_set: | |
7cbecf24 | 6104 | mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true); |
03ea01e9 | 6105 | err_port_vid_learning_set: |
a1107487 IS |
6106 | mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid); |
6107 | err_fid_port_vid_map: | |
6108 | mlxsw_sp_fid_put(fid); | |
03ea01e9 | 6109 | return err; |
4724ba56 IS |
6110 | } |
6111 | ||
a1107487 IS |
6112 | void |
6113 | mlxsw_sp_port_vlan_router_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) | |
4724ba56 | 6114 | { |
ce95e154 | 6115 | struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; |
7cbecf24 | 6116 | struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid; |
ce95e154 | 6117 | u16 vid = mlxsw_sp_port_vlan->vid; |
ce95e154 | 6118 | |
a1107487 IS |
6119 | if (WARN_ON(mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_RFID)) |
6120 | return; | |
4aafc368 | 6121 | |
a1107487 | 6122 | mlxsw_sp_port_vlan->fid = NULL; |
7cbecf24 IS |
6123 | mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_BLOCKING); |
6124 | mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true); | |
a1107487 IS |
6125 | mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid); |
6126 | /* If router port holds the last reference on the rFID, then the | |
6127 | * associated Sub-port RIF will be destroyed. | |
6128 | */ | |
6129 | mlxsw_sp_fid_put(fid); | |
4724ba56 IS |
6130 | } |
6131 | ||
7cbecf24 IS |
6132 | static int mlxsw_sp_inetaddr_port_vlan_event(struct net_device *l3_dev, |
6133 | struct net_device *port_dev, | |
f8fa9b4e DA |
6134 | unsigned long event, u16 vid, |
6135 | struct netlink_ext_ack *extack) | |
4724ba56 IS |
6136 | { |
6137 | struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev); | |
ce95e154 | 6138 | struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; |
4724ba56 | 6139 | |
ce95e154 | 6140 | mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); |
7cbecf24 IS |
6141 | if (WARN_ON(!mlxsw_sp_port_vlan)) |
6142 | return -EINVAL; | |
4724ba56 IS |
6143 | |
6144 | switch (event) { | |
6145 | case NETDEV_UP: | |
a1107487 | 6146 | return mlxsw_sp_port_vlan_router_join(mlxsw_sp_port_vlan, |
f8fa9b4e | 6147 | l3_dev, extack); |
4724ba56 | 6148 | case NETDEV_DOWN: |
a1107487 | 6149 | mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan); |
4724ba56 IS |
6150 | break; |
6151 | } | |
6152 | ||
6153 | return 0; | |
6154 | } | |
6155 | ||
6156 | static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev, | |
f8fa9b4e DA |
6157 | unsigned long event, |
6158 | struct netlink_ext_ack *extack) | |
4724ba56 | 6159 | { |
2b94e58d JP |
6160 | if (netif_is_bridge_port(port_dev) || |
6161 | netif_is_lag_port(port_dev) || | |
6162 | netif_is_ovs_port(port_dev)) | |
4724ba56 IS |
6163 | return 0; |
6164 | ||
f8fa9b4e DA |
6165 | return mlxsw_sp_inetaddr_port_vlan_event(port_dev, port_dev, event, 1, |
6166 | extack); | |
4724ba56 IS |
6167 | } |
6168 | ||
6169 | static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev, | |
6170 | struct net_device *lag_dev, | |
f8fa9b4e DA |
6171 | unsigned long event, u16 vid, |
6172 | struct netlink_ext_ack *extack) | |
4724ba56 IS |
6173 | { |
6174 | struct net_device *port_dev; | |
6175 | struct list_head *iter; | |
6176 | int err; | |
6177 | ||
6178 | netdev_for_each_lower_dev(lag_dev, port_dev, iter) { | |
6179 | if (mlxsw_sp_port_dev_check(port_dev)) { | |
7cbecf24 IS |
6180 | err = mlxsw_sp_inetaddr_port_vlan_event(l3_dev, |
6181 | port_dev, | |
f8fa9b4e DA |
6182 | event, vid, |
6183 | extack); | |
4724ba56 IS |
6184 | if (err) |
6185 | return err; | |
6186 | } | |
6187 | } | |
6188 | ||
6189 | return 0; | |
6190 | } | |
6191 | ||
6192 | static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev, | |
f8fa9b4e DA |
6193 | unsigned long event, |
6194 | struct netlink_ext_ack *extack) | |
4724ba56 IS |
6195 | { |
6196 | if (netif_is_bridge_port(lag_dev)) | |
6197 | return 0; | |
6198 | ||
f8fa9b4e DA |
6199 | return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1, |
6200 | extack); | |
4724ba56 IS |
6201 | } |
6202 | ||
4724ba56 | 6203 | static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev, |
f8fa9b4e DA |
6204 | unsigned long event, |
6205 | struct netlink_ext_ack *extack) | |
4724ba56 IS |
6206 | { |
6207 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); | |
e4f3c1c1 IS |
6208 | struct mlxsw_sp_rif_params params = { |
6209 | .dev = l3_dev, | |
6210 | }; | |
a1107487 | 6211 | struct mlxsw_sp_rif *rif; |
4724ba56 IS |
6212 | |
6213 | switch (event) { | |
6214 | case NETDEV_UP: | |
f8fa9b4e | 6215 | rif = mlxsw_sp_rif_create(mlxsw_sp, ¶ms, extack); |
e4f3c1c1 IS |
6216 | if (IS_ERR(rif)) |
6217 | return PTR_ERR(rif); | |
6218 | break; | |
4724ba56 | 6219 | case NETDEV_DOWN: |
a1107487 | 6220 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
e4f3c1c1 | 6221 | mlxsw_sp_rif_destroy(rif); |
4724ba56 IS |
6222 | break; |
6223 | } | |
6224 | ||
6225 | return 0; | |
6226 | } | |
6227 | ||
6228 | static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev, | |
f8fa9b4e DA |
6229 | unsigned long event, |
6230 | struct netlink_ext_ack *extack) | |
4724ba56 IS |
6231 | { |
6232 | struct net_device *real_dev = vlan_dev_real_dev(vlan_dev); | |
4724ba56 IS |
6233 | u16 vid = vlan_dev_vlan_id(vlan_dev); |
6234 | ||
6b27c8ad IS |
6235 | if (netif_is_bridge_port(vlan_dev)) |
6236 | return 0; | |
6237 | ||
4724ba56 | 6238 | if (mlxsw_sp_port_dev_check(real_dev)) |
7cbecf24 | 6239 | return mlxsw_sp_inetaddr_port_vlan_event(vlan_dev, real_dev, |
f8fa9b4e | 6240 | event, vid, extack); |
4724ba56 IS |
6241 | else if (netif_is_lag_master(real_dev)) |
6242 | return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event, | |
f8fa9b4e | 6243 | vid, extack); |
c57529e1 | 6244 | else if (netif_is_bridge_master(real_dev) && br_vlan_enabled(real_dev)) |
f8fa9b4e | 6245 | return mlxsw_sp_inetaddr_bridge_event(vlan_dev, event, extack); |
4724ba56 IS |
6246 | |
6247 | return 0; | |
6248 | } | |
6249 | ||
b1e45526 | 6250 | static int __mlxsw_sp_inetaddr_event(struct net_device *dev, |
f8fa9b4e DA |
6251 | unsigned long event, |
6252 | struct netlink_ext_ack *extack) | |
b1e45526 IS |
6253 | { |
6254 | if (mlxsw_sp_port_dev_check(dev)) | |
f8fa9b4e | 6255 | return mlxsw_sp_inetaddr_port_event(dev, event, extack); |
b1e45526 | 6256 | else if (netif_is_lag_master(dev)) |
f8fa9b4e | 6257 | return mlxsw_sp_inetaddr_lag_event(dev, event, extack); |
b1e45526 | 6258 | else if (netif_is_bridge_master(dev)) |
f8fa9b4e | 6259 | return mlxsw_sp_inetaddr_bridge_event(dev, event, extack); |
b1e45526 | 6260 | else if (is_vlan_dev(dev)) |
f8fa9b4e | 6261 | return mlxsw_sp_inetaddr_vlan_event(dev, event, extack); |
b1e45526 IS |
6262 | else |
6263 | return 0; | |
6264 | } | |
6265 | ||
4724ba56 IS |
6266 | int mlxsw_sp_inetaddr_event(struct notifier_block *unused, |
6267 | unsigned long event, void *ptr) | |
6268 | { | |
6269 | struct in_ifaddr *ifa = (struct in_ifaddr *) ptr; | |
6270 | struct net_device *dev = ifa->ifa_dev->dev; | |
6271 | struct mlxsw_sp *mlxsw_sp; | |
bf95233e | 6272 | struct mlxsw_sp_rif *rif; |
4724ba56 IS |
6273 | int err = 0; |
6274 | ||
89d5dd2e DA |
6275 | /* NETDEV_UP event is handled by mlxsw_sp_inetaddr_valid_event */ |
6276 | if (event == NETDEV_UP) | |
6277 | goto out; | |
6278 | ||
6279 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
6280 | if (!mlxsw_sp) | |
6281 | goto out; | |
6282 | ||
6283 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
6284 | if (!mlxsw_sp_rif_should_config(rif, dev, event)) | |
6285 | goto out; | |
6286 | ||
f8fa9b4e | 6287 | err = __mlxsw_sp_inetaddr_event(dev, event, NULL); |
89d5dd2e DA |
6288 | out: |
6289 | return notifier_from_errno(err); | |
6290 | } | |
6291 | ||
6292 | int mlxsw_sp_inetaddr_valid_event(struct notifier_block *unused, | |
6293 | unsigned long event, void *ptr) | |
6294 | { | |
6295 | struct in_validator_info *ivi = (struct in_validator_info *) ptr; | |
6296 | struct net_device *dev = ivi->ivi_dev->dev; | |
6297 | struct mlxsw_sp *mlxsw_sp; | |
6298 | struct mlxsw_sp_rif *rif; | |
6299 | int err = 0; | |
6300 | ||
4724ba56 IS |
6301 | mlxsw_sp = mlxsw_sp_lower_get(dev); |
6302 | if (!mlxsw_sp) | |
6303 | goto out; | |
6304 | ||
bf95233e | 6305 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
5ea1237f | 6306 | if (!mlxsw_sp_rif_should_config(rif, dev, event)) |
4724ba56 IS |
6307 | goto out; |
6308 | ||
f8fa9b4e | 6309 | err = __mlxsw_sp_inetaddr_event(dev, event, ivi->extack); |
4724ba56 IS |
6310 | out: |
6311 | return notifier_from_errno(err); | |
6312 | } | |
6313 | ||
5ea1237f AS |
6314 | struct mlxsw_sp_inet6addr_event_work { |
6315 | struct work_struct work; | |
6316 | struct net_device *dev; | |
6317 | unsigned long event; | |
6318 | }; | |
6319 | ||
6320 | static void mlxsw_sp_inet6addr_event_work(struct work_struct *work) | |
6321 | { | |
6322 | struct mlxsw_sp_inet6addr_event_work *inet6addr_work = | |
6323 | container_of(work, struct mlxsw_sp_inet6addr_event_work, work); | |
6324 | struct net_device *dev = inet6addr_work->dev; | |
6325 | unsigned long event = inet6addr_work->event; | |
6326 | struct mlxsw_sp *mlxsw_sp; | |
6327 | struct mlxsw_sp_rif *rif; | |
6328 | ||
6329 | rtnl_lock(); | |
6330 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
6331 | if (!mlxsw_sp) | |
6332 | goto out; | |
6333 | ||
6334 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
6335 | if (!mlxsw_sp_rif_should_config(rif, dev, event)) | |
6336 | goto out; | |
6337 | ||
f8fa9b4e | 6338 | __mlxsw_sp_inetaddr_event(dev, event, NULL); |
5ea1237f AS |
6339 | out: |
6340 | rtnl_unlock(); | |
6341 | dev_put(dev); | |
6342 | kfree(inet6addr_work); | |
6343 | } | |
6344 | ||
6345 | /* Called with rcu_read_lock() */ | |
6346 | int mlxsw_sp_inet6addr_event(struct notifier_block *unused, | |
6347 | unsigned long event, void *ptr) | |
6348 | { | |
6349 | struct inet6_ifaddr *if6 = (struct inet6_ifaddr *) ptr; | |
6350 | struct mlxsw_sp_inet6addr_event_work *inet6addr_work; | |
6351 | struct net_device *dev = if6->idev->dev; | |
6352 | ||
89d5dd2e DA |
6353 | /* NETDEV_UP event is handled by mlxsw_sp_inet6addr_valid_event */ |
6354 | if (event == NETDEV_UP) | |
6355 | return NOTIFY_DONE; | |
6356 | ||
5ea1237f AS |
6357 | if (!mlxsw_sp_port_dev_lower_find_rcu(dev)) |
6358 | return NOTIFY_DONE; | |
6359 | ||
6360 | inet6addr_work = kzalloc(sizeof(*inet6addr_work), GFP_ATOMIC); | |
6361 | if (!inet6addr_work) | |
6362 | return NOTIFY_BAD; | |
6363 | ||
6364 | INIT_WORK(&inet6addr_work->work, mlxsw_sp_inet6addr_event_work); | |
6365 | inet6addr_work->dev = dev; | |
6366 | inet6addr_work->event = event; | |
6367 | dev_hold(dev); | |
6368 | mlxsw_core_schedule_work(&inet6addr_work->work); | |
6369 | ||
6370 | return NOTIFY_DONE; | |
6371 | } | |
6372 | ||
89d5dd2e DA |
6373 | int mlxsw_sp_inet6addr_valid_event(struct notifier_block *unused, |
6374 | unsigned long event, void *ptr) | |
6375 | { | |
6376 | struct in6_validator_info *i6vi = (struct in6_validator_info *) ptr; | |
6377 | struct net_device *dev = i6vi->i6vi_dev->dev; | |
6378 | struct mlxsw_sp *mlxsw_sp; | |
6379 | struct mlxsw_sp_rif *rif; | |
6380 | int err = 0; | |
6381 | ||
6382 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
6383 | if (!mlxsw_sp) | |
6384 | goto out; | |
6385 | ||
6386 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
6387 | if (!mlxsw_sp_rif_should_config(rif, dev, event)) | |
6388 | goto out; | |
6389 | ||
f8fa9b4e | 6390 | err = __mlxsw_sp_inetaddr_event(dev, event, i6vi->extack); |
89d5dd2e DA |
6391 | out: |
6392 | return notifier_from_errno(err); | |
6393 | } | |
6394 | ||
bf95233e | 6395 | static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, |
4724ba56 IS |
6396 | const char *mac, int mtu) |
6397 | { | |
6398 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
6399 | int err; | |
6400 | ||
bf95233e | 6401 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); |
4724ba56 IS |
6402 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); |
6403 | if (err) | |
6404 | return err; | |
6405 | ||
6406 | mlxsw_reg_ritr_mtu_set(ritr_pl, mtu); | |
6407 | mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac); | |
6408 | mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE); | |
6409 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
6410 | } | |
6411 | ||
6412 | int mlxsw_sp_netdevice_router_port_event(struct net_device *dev) | |
6413 | { | |
6414 | struct mlxsw_sp *mlxsw_sp; | |
bf95233e | 6415 | struct mlxsw_sp_rif *rif; |
a1107487 | 6416 | u16 fid_index; |
4724ba56 IS |
6417 | int err; |
6418 | ||
6419 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
6420 | if (!mlxsw_sp) | |
6421 | return 0; | |
6422 | ||
bf95233e AS |
6423 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
6424 | if (!rif) | |
4724ba56 | 6425 | return 0; |
a1107487 | 6426 | fid_index = mlxsw_sp_fid_index(rif->fid); |
4724ba56 | 6427 | |
a1107487 | 6428 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, false); |
4724ba56 IS |
6429 | if (err) |
6430 | return err; | |
6431 | ||
bf95233e AS |
6432 | err = mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, dev->dev_addr, |
6433 | dev->mtu); | |
4724ba56 IS |
6434 | if (err) |
6435 | goto err_rif_edit; | |
6436 | ||
a1107487 | 6437 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, fid_index, true); |
4724ba56 IS |
6438 | if (err) |
6439 | goto err_rif_fdb_op; | |
6440 | ||
fd890fe9 YG |
6441 | if (rif->mtu != dev->mtu) { |
6442 | struct mlxsw_sp_vr *vr; | |
6443 | ||
6444 | /* The RIF is relevant only to its mr_table instance, as unlike | |
6445 | * unicast routing, in multicast routing a RIF cannot be shared | |
6446 | * between several multicast routing tables. | |
6447 | */ | |
6448 | vr = &mlxsw_sp->router->vrs[rif->vr_id]; | |
6449 | mlxsw_sp_mr_rif_mtu_update(vr->mr4_table, rif, dev->mtu); | |
6450 | } | |
6451 | ||
bf95233e AS |
6452 | ether_addr_copy(rif->addr, dev->dev_addr); |
6453 | rif->mtu = dev->mtu; | |
4724ba56 | 6454 | |
bf95233e | 6455 | netdev_dbg(dev, "Updated RIF=%d\n", rif->rif_index); |
4724ba56 IS |
6456 | |
6457 | return 0; | |
6458 | ||
6459 | err_rif_fdb_op: | |
bf95233e | 6460 | mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, rif->addr, rif->mtu); |
4724ba56 | 6461 | err_rif_edit: |
a1107487 | 6462 | mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, true); |
4724ba56 IS |
6463 | return err; |
6464 | } | |
6465 | ||
b1e45526 | 6466 | static int mlxsw_sp_port_vrf_join(struct mlxsw_sp *mlxsw_sp, |
f8fa9b4e DA |
6467 | struct net_device *l3_dev, |
6468 | struct netlink_ext_ack *extack) | |
7179eb5a | 6469 | { |
b1e45526 | 6470 | struct mlxsw_sp_rif *rif; |
7179eb5a | 6471 | |
b1e45526 IS |
6472 | /* If netdev is already associated with a RIF, then we need to |
6473 | * destroy it and create a new one with the new virtual router ID. | |
7179eb5a | 6474 | */ |
b1e45526 IS |
6475 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
6476 | if (rif) | |
f8fa9b4e | 6477 | __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN, extack); |
7179eb5a | 6478 | |
f8fa9b4e | 6479 | return __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_UP, extack); |
7179eb5a IS |
6480 | } |
6481 | ||
b1e45526 IS |
6482 | static void mlxsw_sp_port_vrf_leave(struct mlxsw_sp *mlxsw_sp, |
6483 | struct net_device *l3_dev) | |
7179eb5a | 6484 | { |
b1e45526 | 6485 | struct mlxsw_sp_rif *rif; |
7179eb5a | 6486 | |
b1e45526 IS |
6487 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
6488 | if (!rif) | |
7179eb5a | 6489 | return; |
f8fa9b4e | 6490 | __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN, NULL); |
7179eb5a IS |
6491 | } |
6492 | ||
b1e45526 IS |
6493 | int mlxsw_sp_netdevice_vrf_event(struct net_device *l3_dev, unsigned long event, |
6494 | struct netdev_notifier_changeupper_info *info) | |
3d70e458 | 6495 | { |
b1e45526 IS |
6496 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); |
6497 | int err = 0; | |
3d70e458 | 6498 | |
b1e45526 IS |
6499 | if (!mlxsw_sp) |
6500 | return 0; | |
3d70e458 | 6501 | |
b1e45526 IS |
6502 | switch (event) { |
6503 | case NETDEV_PRECHANGEUPPER: | |
6504 | return 0; | |
6505 | case NETDEV_CHANGEUPPER: | |
f8fa9b4e DA |
6506 | if (info->linking) { |
6507 | struct netlink_ext_ack *extack; | |
6508 | ||
6509 | extack = netdev_notifier_info_to_extack(&info->info); | |
6510 | err = mlxsw_sp_port_vrf_join(mlxsw_sp, l3_dev, extack); | |
6511 | } else { | |
b1e45526 | 6512 | mlxsw_sp_port_vrf_leave(mlxsw_sp, l3_dev); |
f8fa9b4e | 6513 | } |
b1e45526 IS |
6514 | break; |
6515 | } | |
3d70e458 | 6516 | |
b1e45526 | 6517 | return err; |
3d70e458 IS |
6518 | } |
6519 | ||
e4f3c1c1 IS |
6520 | static struct mlxsw_sp_rif_subport * |
6521 | mlxsw_sp_rif_subport_rif(const struct mlxsw_sp_rif *rif) | |
a1107487 | 6522 | { |
e4f3c1c1 IS |
6523 | return container_of(rif, struct mlxsw_sp_rif_subport, common); |
6524 | } | |
6525 | ||
6526 | static void mlxsw_sp_rif_subport_setup(struct mlxsw_sp_rif *rif, | |
6527 | const struct mlxsw_sp_rif_params *params) | |
6528 | { | |
6529 | struct mlxsw_sp_rif_subport *rif_subport; | |
6530 | ||
6531 | rif_subport = mlxsw_sp_rif_subport_rif(rif); | |
6532 | rif_subport->vid = params->vid; | |
6533 | rif_subport->lag = params->lag; | |
6534 | if (params->lag) | |
6535 | rif_subport->lag_id = params->lag_id; | |
a1107487 | 6536 | else |
e4f3c1c1 IS |
6537 | rif_subport->system_port = params->system_port; |
6538 | } | |
6539 | ||
6540 | static int mlxsw_sp_rif_subport_op(struct mlxsw_sp_rif *rif, bool enable) | |
6541 | { | |
6542 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6543 | struct mlxsw_sp_rif_subport *rif_subport; | |
6544 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
6545 | ||
6546 | rif_subport = mlxsw_sp_rif_subport_rif(rif); | |
6547 | mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_SP_IF, | |
9571e828 PM |
6548 | rif->rif_index, rif->vr_id, rif->dev->mtu); |
6549 | mlxsw_reg_ritr_mac_pack(ritr_pl, rif->dev->dev_addr); | |
e4f3c1c1 IS |
6550 | mlxsw_reg_ritr_sp_if_pack(ritr_pl, rif_subport->lag, |
6551 | rif_subport->lag ? rif_subport->lag_id : | |
6552 | rif_subport->system_port, | |
6553 | rif_subport->vid); | |
6554 | ||
6555 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
6556 | } | |
6557 | ||
6558 | static int mlxsw_sp_rif_subport_configure(struct mlxsw_sp_rif *rif) | |
6559 | { | |
010cadf9 PM |
6560 | int err; |
6561 | ||
6562 | err = mlxsw_sp_rif_subport_op(rif, true); | |
6563 | if (err) | |
6564 | return err; | |
6565 | ||
6566 | err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, | |
6567 | mlxsw_sp_fid_index(rif->fid), true); | |
6568 | if (err) | |
6569 | goto err_rif_fdb_op; | |
6570 | ||
6571 | mlxsw_sp_fid_rif_set(rif->fid, rif); | |
6572 | return 0; | |
6573 | ||
6574 | err_rif_fdb_op: | |
6575 | mlxsw_sp_rif_subport_op(rif, false); | |
6576 | return err; | |
a1107487 IS |
6577 | } |
6578 | ||
e4f3c1c1 IS |
6579 | static void mlxsw_sp_rif_subport_deconfigure(struct mlxsw_sp_rif *rif) |
6580 | { | |
010cadf9 PM |
6581 | struct mlxsw_sp_fid *fid = rif->fid; |
6582 | ||
6583 | mlxsw_sp_fid_rif_set(fid, NULL); | |
6584 | mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, | |
6585 | mlxsw_sp_fid_index(fid), false); | |
e4f3c1c1 IS |
6586 | mlxsw_sp_rif_subport_op(rif, false); |
6587 | } | |
6588 | ||
6589 | static struct mlxsw_sp_fid * | |
6590 | mlxsw_sp_rif_subport_fid_get(struct mlxsw_sp_rif *rif) | |
6591 | { | |
6592 | return mlxsw_sp_fid_rfid_get(rif->mlxsw_sp, rif->rif_index); | |
6593 | } | |
6594 | ||
6595 | static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_subport_ops = { | |
6596 | .type = MLXSW_SP_RIF_TYPE_SUBPORT, | |
6597 | .rif_size = sizeof(struct mlxsw_sp_rif_subport), | |
6598 | .setup = mlxsw_sp_rif_subport_setup, | |
6599 | .configure = mlxsw_sp_rif_subport_configure, | |
6600 | .deconfigure = mlxsw_sp_rif_subport_deconfigure, | |
6601 | .fid_get = mlxsw_sp_rif_subport_fid_get, | |
6602 | }; | |
6603 | ||
6604 | static int mlxsw_sp_rif_vlan_fid_op(struct mlxsw_sp_rif *rif, | |
6605 | enum mlxsw_reg_ritr_if_type type, | |
6606 | u16 vid_fid, bool enable) | |
6607 | { | |
6608 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6609 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
6610 | ||
6611 | mlxsw_reg_ritr_pack(ritr_pl, enable, type, rif->rif_index, rif->vr_id, | |
9571e828 PM |
6612 | rif->dev->mtu); |
6613 | mlxsw_reg_ritr_mac_pack(ritr_pl, rif->dev->dev_addr); | |
e4f3c1c1 IS |
6614 | mlxsw_reg_ritr_fid_set(ritr_pl, type, vid_fid); |
6615 | ||
6616 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
6617 | } | |
6618 | ||
b35750f1 | 6619 | u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp) |
e4f3c1c1 IS |
6620 | { |
6621 | return mlxsw_core_max_ports(mlxsw_sp->core) + 1; | |
6622 | } | |
6623 | ||
6624 | static int mlxsw_sp_rif_vlan_configure(struct mlxsw_sp_rif *rif) | |
6625 | { | |
6626 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6627 | u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid); | |
6628 | int err; | |
6629 | ||
6630 | err = mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, true); | |
6631 | if (err) | |
6632 | return err; | |
6633 | ||
0d284818 IS |
6634 | err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
6635 | mlxsw_sp_router_port(mlxsw_sp), true); | |
6636 | if (err) | |
6637 | goto err_fid_mc_flood_set; | |
6638 | ||
e4f3c1c1 IS |
6639 | err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, |
6640 | mlxsw_sp_router_port(mlxsw_sp), true); | |
6641 | if (err) | |
6642 | goto err_fid_bc_flood_set; | |
6643 | ||
010cadf9 PM |
6644 | err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, |
6645 | mlxsw_sp_fid_index(rif->fid), true); | |
6646 | if (err) | |
6647 | goto err_rif_fdb_op; | |
6648 | ||
6649 | mlxsw_sp_fid_rif_set(rif->fid, rif); | |
e4f3c1c1 IS |
6650 | return 0; |
6651 | ||
010cadf9 PM |
6652 | err_rif_fdb_op: |
6653 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, | |
6654 | mlxsw_sp_router_port(mlxsw_sp), false); | |
e4f3c1c1 | 6655 | err_fid_bc_flood_set: |
0d284818 IS |
6656 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
6657 | mlxsw_sp_router_port(mlxsw_sp), false); | |
6658 | err_fid_mc_flood_set: | |
e4f3c1c1 IS |
6659 | mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, false); |
6660 | return err; | |
6661 | } | |
6662 | ||
6663 | static void mlxsw_sp_rif_vlan_deconfigure(struct mlxsw_sp_rif *rif) | |
6664 | { | |
e4f3c1c1 | 6665 | u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid); |
010cadf9 PM |
6666 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; |
6667 | struct mlxsw_sp_fid *fid = rif->fid; | |
e4f3c1c1 | 6668 | |
010cadf9 PM |
6669 | mlxsw_sp_fid_rif_set(fid, NULL); |
6670 | mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, | |
6671 | mlxsw_sp_fid_index(fid), false); | |
e4f3c1c1 IS |
6672 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, |
6673 | mlxsw_sp_router_port(mlxsw_sp), false); | |
0d284818 IS |
6674 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
6675 | mlxsw_sp_router_port(mlxsw_sp), false); | |
e4f3c1c1 IS |
6676 | mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, false); |
6677 | } | |
6678 | ||
6679 | static struct mlxsw_sp_fid * | |
6680 | mlxsw_sp_rif_vlan_fid_get(struct mlxsw_sp_rif *rif) | |
6681 | { | |
6682 | u16 vid = is_vlan_dev(rif->dev) ? vlan_dev_vlan_id(rif->dev) : 1; | |
6683 | ||
6684 | return mlxsw_sp_fid_8021q_get(rif->mlxsw_sp, vid); | |
6685 | } | |
6686 | ||
6687 | static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_vlan_ops = { | |
6688 | .type = MLXSW_SP_RIF_TYPE_VLAN, | |
6689 | .rif_size = sizeof(struct mlxsw_sp_rif), | |
6690 | .configure = mlxsw_sp_rif_vlan_configure, | |
6691 | .deconfigure = mlxsw_sp_rif_vlan_deconfigure, | |
6692 | .fid_get = mlxsw_sp_rif_vlan_fid_get, | |
6693 | }; | |
6694 | ||
6695 | static int mlxsw_sp_rif_fid_configure(struct mlxsw_sp_rif *rif) | |
6696 | { | |
6697 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6698 | u16 fid_index = mlxsw_sp_fid_index(rif->fid); | |
6699 | int err; | |
6700 | ||
6701 | err = mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, | |
6702 | true); | |
6703 | if (err) | |
6704 | return err; | |
6705 | ||
0d284818 IS |
6706 | err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
6707 | mlxsw_sp_router_port(mlxsw_sp), true); | |
6708 | if (err) | |
6709 | goto err_fid_mc_flood_set; | |
6710 | ||
e4f3c1c1 IS |
6711 | err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, |
6712 | mlxsw_sp_router_port(mlxsw_sp), true); | |
6713 | if (err) | |
6714 | goto err_fid_bc_flood_set; | |
6715 | ||
010cadf9 PM |
6716 | err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, |
6717 | mlxsw_sp_fid_index(rif->fid), true); | |
6718 | if (err) | |
6719 | goto err_rif_fdb_op; | |
6720 | ||
6721 | mlxsw_sp_fid_rif_set(rif->fid, rif); | |
e4f3c1c1 IS |
6722 | return 0; |
6723 | ||
010cadf9 PM |
6724 | err_rif_fdb_op: |
6725 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, | |
6726 | mlxsw_sp_router_port(mlxsw_sp), false); | |
e4f3c1c1 | 6727 | err_fid_bc_flood_set: |
0d284818 IS |
6728 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
6729 | mlxsw_sp_router_port(mlxsw_sp), false); | |
6730 | err_fid_mc_flood_set: | |
e4f3c1c1 IS |
6731 | mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, false); |
6732 | return err; | |
6733 | } | |
6734 | ||
6735 | static void mlxsw_sp_rif_fid_deconfigure(struct mlxsw_sp_rif *rif) | |
6736 | { | |
e4f3c1c1 | 6737 | u16 fid_index = mlxsw_sp_fid_index(rif->fid); |
010cadf9 PM |
6738 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; |
6739 | struct mlxsw_sp_fid *fid = rif->fid; | |
e4f3c1c1 | 6740 | |
010cadf9 PM |
6741 | mlxsw_sp_fid_rif_set(fid, NULL); |
6742 | mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, | |
6743 | mlxsw_sp_fid_index(fid), false); | |
e4f3c1c1 IS |
6744 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, |
6745 | mlxsw_sp_router_port(mlxsw_sp), false); | |
0d284818 IS |
6746 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
6747 | mlxsw_sp_router_port(mlxsw_sp), false); | |
e4f3c1c1 IS |
6748 | mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, false); |
6749 | } | |
6750 | ||
6751 | static struct mlxsw_sp_fid * | |
6752 | mlxsw_sp_rif_fid_fid_get(struct mlxsw_sp_rif *rif) | |
6753 | { | |
6754 | return mlxsw_sp_fid_8021d_get(rif->mlxsw_sp, rif->dev->ifindex); | |
6755 | } | |
6756 | ||
6757 | static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_fid_ops = { | |
6758 | .type = MLXSW_SP_RIF_TYPE_FID, | |
6759 | .rif_size = sizeof(struct mlxsw_sp_rif), | |
6760 | .configure = mlxsw_sp_rif_fid_configure, | |
6761 | .deconfigure = mlxsw_sp_rif_fid_deconfigure, | |
6762 | .fid_get = mlxsw_sp_rif_fid_fid_get, | |
6763 | }; | |
6764 | ||
6ddb7426 PM |
6765 | static struct mlxsw_sp_rif_ipip_lb * |
6766 | mlxsw_sp_rif_ipip_lb_rif(struct mlxsw_sp_rif *rif) | |
6767 | { | |
6768 | return container_of(rif, struct mlxsw_sp_rif_ipip_lb, common); | |
6769 | } | |
6770 | ||
6771 | static void | |
6772 | mlxsw_sp_rif_ipip_lb_setup(struct mlxsw_sp_rif *rif, | |
6773 | const struct mlxsw_sp_rif_params *params) | |
6774 | { | |
6775 | struct mlxsw_sp_rif_params_ipip_lb *params_lb; | |
6776 | struct mlxsw_sp_rif_ipip_lb *rif_lb; | |
6777 | ||
6778 | params_lb = container_of(params, struct mlxsw_sp_rif_params_ipip_lb, | |
6779 | common); | |
6780 | rif_lb = mlxsw_sp_rif_ipip_lb_rif(rif); | |
6781 | rif_lb->lb_config = params_lb->lb_config; | |
6782 | } | |
6783 | ||
6784 | static int | |
6785 | mlxsw_sp_rif_ipip_lb_op(struct mlxsw_sp_rif_ipip_lb *lb_rif, | |
6786 | struct mlxsw_sp_vr *ul_vr, bool enable) | |
6787 | { | |
6788 | struct mlxsw_sp_rif_ipip_lb_config lb_cf = lb_rif->lb_config; | |
6789 | struct mlxsw_sp_rif *rif = &lb_rif->common; | |
6790 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6791 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
6792 | u32 saddr4; | |
6793 | ||
6794 | switch (lb_cf.ul_protocol) { | |
6795 | case MLXSW_SP_L3_PROTO_IPV4: | |
6796 | saddr4 = be32_to_cpu(lb_cf.saddr.addr4); | |
6797 | mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_LOOPBACK_IF, | |
6798 | rif->rif_index, rif->vr_id, rif->dev->mtu); | |
6799 | mlxsw_reg_ritr_loopback_ipip4_pack(ritr_pl, lb_cf.lb_ipipt, | |
6800 | MLXSW_REG_RITR_LOOPBACK_IPIP_OPTIONS_GRE_KEY_PRESET, | |
6801 | ul_vr->id, saddr4, lb_cf.okey); | |
6802 | break; | |
6803 | ||
6804 | case MLXSW_SP_L3_PROTO_IPV6: | |
6805 | return -EAFNOSUPPORT; | |
6806 | } | |
6807 | ||
6808 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
6809 | } | |
6810 | ||
6811 | static int | |
6812 | mlxsw_sp_rif_ipip_lb_configure(struct mlxsw_sp_rif *rif) | |
6813 | { | |
6814 | struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif); | |
6815 | u32 ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(rif->dev); | |
6816 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6817 | struct mlxsw_sp_vr *ul_vr; | |
6818 | int err; | |
6819 | ||
f8fa9b4e | 6820 | ul_vr = mlxsw_sp_vr_get(mlxsw_sp, ul_tb_id, NULL); |
6ddb7426 PM |
6821 | if (IS_ERR(ul_vr)) |
6822 | return PTR_ERR(ul_vr); | |
6823 | ||
6824 | err = mlxsw_sp_rif_ipip_lb_op(lb_rif, ul_vr, true); | |
6825 | if (err) | |
6826 | goto err_loopback_op; | |
6827 | ||
6828 | lb_rif->ul_vr_id = ul_vr->id; | |
6829 | ++ul_vr->rif_count; | |
6830 | return 0; | |
6831 | ||
6832 | err_loopback_op: | |
6833 | mlxsw_sp_vr_put(ul_vr); | |
6834 | return err; | |
6835 | } | |
6836 | ||
6837 | static void mlxsw_sp_rif_ipip_lb_deconfigure(struct mlxsw_sp_rif *rif) | |
6838 | { | |
6839 | struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif); | |
6840 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
6841 | struct mlxsw_sp_vr *ul_vr; | |
6842 | ||
6843 | ul_vr = &mlxsw_sp->router->vrs[lb_rif->ul_vr_id]; | |
6844 | mlxsw_sp_rif_ipip_lb_op(lb_rif, ul_vr, false); | |
6845 | ||
6846 | --ul_vr->rif_count; | |
6847 | mlxsw_sp_vr_put(ul_vr); | |
6848 | } | |
6849 | ||
6850 | static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_ipip_lb_ops = { | |
6851 | .type = MLXSW_SP_RIF_TYPE_IPIP_LB, | |
6852 | .rif_size = sizeof(struct mlxsw_sp_rif_ipip_lb), | |
6853 | .setup = mlxsw_sp_rif_ipip_lb_setup, | |
6854 | .configure = mlxsw_sp_rif_ipip_lb_configure, | |
6855 | .deconfigure = mlxsw_sp_rif_ipip_lb_deconfigure, | |
6856 | }; | |
6857 | ||
e4f3c1c1 IS |
6858 | static const struct mlxsw_sp_rif_ops *mlxsw_sp_rif_ops_arr[] = { |
6859 | [MLXSW_SP_RIF_TYPE_SUBPORT] = &mlxsw_sp_rif_subport_ops, | |
6860 | [MLXSW_SP_RIF_TYPE_VLAN] = &mlxsw_sp_rif_vlan_ops, | |
6861 | [MLXSW_SP_RIF_TYPE_FID] = &mlxsw_sp_rif_fid_ops, | |
6ddb7426 | 6862 | [MLXSW_SP_RIF_TYPE_IPIP_LB] = &mlxsw_sp_rif_ipip_lb_ops, |
e4f3c1c1 IS |
6863 | }; |
6864 | ||
348b8fc3 IS |
6865 | static int mlxsw_sp_rifs_init(struct mlxsw_sp *mlxsw_sp) |
6866 | { | |
6867 | u64 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); | |
6868 | ||
6869 | mlxsw_sp->router->rifs = kcalloc(max_rifs, | |
6870 | sizeof(struct mlxsw_sp_rif *), | |
6871 | GFP_KERNEL); | |
6872 | if (!mlxsw_sp->router->rifs) | |
6873 | return -ENOMEM; | |
e4f3c1c1 IS |
6874 | |
6875 | mlxsw_sp->router->rif_ops_arr = mlxsw_sp_rif_ops_arr; | |
6876 | ||
348b8fc3 IS |
6877 | return 0; |
6878 | } | |
6879 | ||
6880 | static void mlxsw_sp_rifs_fini(struct mlxsw_sp *mlxsw_sp) | |
6881 | { | |
6882 | int i; | |
6883 | ||
6884 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
6885 | WARN_ON_ONCE(mlxsw_sp->router->rifs[i]); | |
6886 | ||
6887 | kfree(mlxsw_sp->router->rifs); | |
6888 | } | |
6889 | ||
dcbda282 PM |
6890 | static int |
6891 | mlxsw_sp_ipip_config_tigcr(struct mlxsw_sp *mlxsw_sp) | |
6892 | { | |
6893 | char tigcr_pl[MLXSW_REG_TIGCR_LEN]; | |
6894 | ||
6895 | mlxsw_reg_tigcr_pack(tigcr_pl, true, 0); | |
6896 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tigcr), tigcr_pl); | |
6897 | } | |
6898 | ||
38ebc0f4 PM |
6899 | static int mlxsw_sp_ipips_init(struct mlxsw_sp *mlxsw_sp) |
6900 | { | |
6901 | mlxsw_sp->router->ipip_ops_arr = mlxsw_sp_ipip_ops_arr; | |
1012b9ac | 6902 | INIT_LIST_HEAD(&mlxsw_sp->router->ipip_list); |
dcbda282 | 6903 | return mlxsw_sp_ipip_config_tigcr(mlxsw_sp); |
38ebc0f4 PM |
6904 | } |
6905 | ||
6906 | static void mlxsw_sp_ipips_fini(struct mlxsw_sp *mlxsw_sp) | |
6907 | { | |
1012b9ac | 6908 | WARN_ON(!list_empty(&mlxsw_sp->router->ipip_list)); |
38ebc0f4 PM |
6909 | } |
6910 | ||
c3852ef7 IS |
6911 | static void mlxsw_sp_router_fib_dump_flush(struct notifier_block *nb) |
6912 | { | |
7e39d115 | 6913 | struct mlxsw_sp_router *router; |
c3852ef7 IS |
6914 | |
6915 | /* Flush pending FIB notifications and then flush the device's | |
6916 | * table before requesting another dump. The FIB notification | |
6917 | * block is unregistered, so no need to take RTNL. | |
6918 | */ | |
6919 | mlxsw_core_flush_owq(); | |
7e39d115 IS |
6920 | router = container_of(nb, struct mlxsw_sp_router, fib_nb); |
6921 | mlxsw_sp_router_fib_flush(router->mlxsw_sp); | |
c3852ef7 IS |
6922 | } |
6923 | ||
af658b6a IS |
6924 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
6925 | static void mlxsw_sp_mp_hash_header_set(char *recr2_pl, int header) | |
6926 | { | |
6927 | mlxsw_reg_recr2_outer_header_enables_set(recr2_pl, header, true); | |
6928 | } | |
6929 | ||
6930 | static void mlxsw_sp_mp_hash_field_set(char *recr2_pl, int field) | |
6931 | { | |
6932 | mlxsw_reg_recr2_outer_header_fields_enable_set(recr2_pl, field, true); | |
6933 | } | |
6934 | ||
6935 | static void mlxsw_sp_mp4_hash_init(char *recr2_pl) | |
6936 | { | |
6937 | bool only_l3 = !init_net.ipv4.sysctl_fib_multipath_hash_policy; | |
6938 | ||
6939 | mlxsw_sp_mp_hash_header_set(recr2_pl, | |
6940 | MLXSW_REG_RECR2_IPV4_EN_NOT_TCP_NOT_UDP); | |
6941 | mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV4_EN_TCP_UDP); | |
6942 | mlxsw_reg_recr2_ipv4_sip_enable(recr2_pl); | |
6943 | mlxsw_reg_recr2_ipv4_dip_enable(recr2_pl); | |
6944 | if (only_l3) | |
6945 | return; | |
6946 | mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_EN_IPV4); | |
6947 | mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_IPV4_PROTOCOL); | |
6948 | mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_SPORT); | |
6949 | mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_TCP_UDP_DPORT); | |
6950 | } | |
6951 | ||
6952 | static void mlxsw_sp_mp6_hash_init(char *recr2_pl) | |
6953 | { | |
6954 | mlxsw_sp_mp_hash_header_set(recr2_pl, | |
6955 | MLXSW_REG_RECR2_IPV6_EN_NOT_TCP_NOT_UDP); | |
6956 | mlxsw_sp_mp_hash_header_set(recr2_pl, MLXSW_REG_RECR2_IPV6_EN_TCP_UDP); | |
6957 | mlxsw_reg_recr2_ipv6_sip_enable(recr2_pl); | |
6958 | mlxsw_reg_recr2_ipv6_dip_enable(recr2_pl); | |
6959 | mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_IPV6_FLOW_LABEL); | |
6960 | mlxsw_sp_mp_hash_field_set(recr2_pl, MLXSW_REG_RECR2_IPV6_NEXT_HEADER); | |
6961 | } | |
6962 | ||
6963 | static int mlxsw_sp_mp_hash_init(struct mlxsw_sp *mlxsw_sp) | |
6964 | { | |
6965 | char recr2_pl[MLXSW_REG_RECR2_LEN]; | |
6966 | u32 seed; | |
6967 | ||
6968 | get_random_bytes(&seed, sizeof(seed)); | |
6969 | mlxsw_reg_recr2_pack(recr2_pl, seed); | |
6970 | mlxsw_sp_mp4_hash_init(recr2_pl); | |
6971 | mlxsw_sp_mp6_hash_init(recr2_pl); | |
6972 | ||
6973 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(recr2), recr2_pl); | |
6974 | } | |
6975 | #else | |
6976 | static int mlxsw_sp_mp_hash_init(struct mlxsw_sp *mlxsw_sp) | |
6977 | { | |
6978 | return 0; | |
6979 | } | |
6980 | #endif | |
6981 | ||
4724ba56 IS |
6982 | static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
6983 | { | |
6984 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
6985 | u64 max_rifs; | |
6986 | int err; | |
6987 | ||
6988 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS)) | |
6989 | return -EIO; | |
4724ba56 | 6990 | max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); |
4724ba56 | 6991 | |
e29237e7 | 6992 | mlxsw_reg_rgcr_pack(rgcr_pl, true, true); |
4724ba56 IS |
6993 | mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs); |
6994 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
6995 | if (err) | |
348b8fc3 | 6996 | return err; |
4724ba56 | 6997 | return 0; |
4724ba56 IS |
6998 | } |
6999 | ||
7000 | static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
7001 | { | |
7002 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
4724ba56 | 7003 | |
e29237e7 | 7004 | mlxsw_reg_rgcr_pack(rgcr_pl, false, false); |
4724ba56 | 7005 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); |
4724ba56 IS |
7006 | } |
7007 | ||
b45f64d1 JP |
7008 | int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
7009 | { | |
9011b677 | 7010 | struct mlxsw_sp_router *router; |
b45f64d1 JP |
7011 | int err; |
7012 | ||
9011b677 IS |
7013 | router = kzalloc(sizeof(*mlxsw_sp->router), GFP_KERNEL); |
7014 | if (!router) | |
7015 | return -ENOMEM; | |
7016 | mlxsw_sp->router = router; | |
7017 | router->mlxsw_sp = mlxsw_sp; | |
7018 | ||
7019 | INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_neighs_list); | |
b45f64d1 JP |
7020 | err = __mlxsw_sp_router_init(mlxsw_sp); |
7021 | if (err) | |
9011b677 | 7022 | goto err_router_init; |
b45f64d1 | 7023 | |
348b8fc3 IS |
7024 | err = mlxsw_sp_rifs_init(mlxsw_sp); |
7025 | if (err) | |
7026 | goto err_rifs_init; | |
7027 | ||
38ebc0f4 PM |
7028 | err = mlxsw_sp_ipips_init(mlxsw_sp); |
7029 | if (err) | |
7030 | goto err_ipips_init; | |
7031 | ||
9011b677 | 7032 | err = rhashtable_init(&mlxsw_sp->router->nexthop_ht, |
c53b8e1b IS |
7033 | &mlxsw_sp_nexthop_ht_params); |
7034 | if (err) | |
7035 | goto err_nexthop_ht_init; | |
7036 | ||
9011b677 | 7037 | err = rhashtable_init(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
7038 | &mlxsw_sp_nexthop_group_ht_params); |
7039 | if (err) | |
7040 | goto err_nexthop_group_ht_init; | |
7041 | ||
dbe4598c | 7042 | INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_list); |
8494ab06 IS |
7043 | err = mlxsw_sp_lpm_init(mlxsw_sp); |
7044 | if (err) | |
7045 | goto err_lpm_init; | |
7046 | ||
d42b0965 YG |
7047 | err = mlxsw_sp_mr_init(mlxsw_sp, &mlxsw_sp_mr_tcam_ops); |
7048 | if (err) | |
7049 | goto err_mr_init; | |
7050 | ||
b45f64d1 JP |
7051 | err = mlxsw_sp_vrs_init(mlxsw_sp); |
7052 | if (err) | |
7053 | goto err_vrs_init; | |
7054 | ||
8c9583a8 | 7055 | err = mlxsw_sp_neigh_init(mlxsw_sp); |
b45f64d1 JP |
7056 | if (err) |
7057 | goto err_neigh_init; | |
7058 | ||
48fac885 IS |
7059 | mlxsw_sp->router->netevent_nb.notifier_call = |
7060 | mlxsw_sp_router_netevent_event; | |
7061 | err = register_netevent_notifier(&mlxsw_sp->router->netevent_nb); | |
7062 | if (err) | |
7063 | goto err_register_netevent_notifier; | |
7064 | ||
af658b6a IS |
7065 | err = mlxsw_sp_mp_hash_init(mlxsw_sp); |
7066 | if (err) | |
7067 | goto err_mp_hash_init; | |
7068 | ||
7e39d115 IS |
7069 | mlxsw_sp->router->fib_nb.notifier_call = mlxsw_sp_router_fib_event; |
7070 | err = register_fib_notifier(&mlxsw_sp->router->fib_nb, | |
c3852ef7 IS |
7071 | mlxsw_sp_router_fib_dump_flush); |
7072 | if (err) | |
7073 | goto err_register_fib_notifier; | |
7074 | ||
b45f64d1 JP |
7075 | return 0; |
7076 | ||
c3852ef7 | 7077 | err_register_fib_notifier: |
af658b6a | 7078 | err_mp_hash_init: |
48fac885 IS |
7079 | unregister_netevent_notifier(&mlxsw_sp->router->netevent_nb); |
7080 | err_register_netevent_notifier: | |
c3852ef7 | 7081 | mlxsw_sp_neigh_fini(mlxsw_sp); |
b45f64d1 JP |
7082 | err_neigh_init: |
7083 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
7084 | err_vrs_init: | |
d42b0965 YG |
7085 | mlxsw_sp_mr_fini(mlxsw_sp); |
7086 | err_mr_init: | |
8494ab06 IS |
7087 | mlxsw_sp_lpm_fini(mlxsw_sp); |
7088 | err_lpm_init: | |
9011b677 | 7089 | rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht); |
e9ad5e7d | 7090 | err_nexthop_group_ht_init: |
9011b677 | 7091 | rhashtable_destroy(&mlxsw_sp->router->nexthop_ht); |
c53b8e1b | 7092 | err_nexthop_ht_init: |
38ebc0f4 PM |
7093 | mlxsw_sp_ipips_fini(mlxsw_sp); |
7094 | err_ipips_init: | |
348b8fc3 IS |
7095 | mlxsw_sp_rifs_fini(mlxsw_sp); |
7096 | err_rifs_init: | |
b45f64d1 | 7097 | __mlxsw_sp_router_fini(mlxsw_sp); |
9011b677 IS |
7098 | err_router_init: |
7099 | kfree(mlxsw_sp->router); | |
b45f64d1 JP |
7100 | return err; |
7101 | } | |
7102 | ||
7103 | void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
7104 | { | |
7e39d115 | 7105 | unregister_fib_notifier(&mlxsw_sp->router->fib_nb); |
48fac885 | 7106 | unregister_netevent_notifier(&mlxsw_sp->router->netevent_nb); |
b45f64d1 JP |
7107 | mlxsw_sp_neigh_fini(mlxsw_sp); |
7108 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
d42b0965 | 7109 | mlxsw_sp_mr_fini(mlxsw_sp); |
8494ab06 | 7110 | mlxsw_sp_lpm_fini(mlxsw_sp); |
9011b677 IS |
7111 | rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht); |
7112 | rhashtable_destroy(&mlxsw_sp->router->nexthop_ht); | |
38ebc0f4 | 7113 | mlxsw_sp_ipips_fini(mlxsw_sp); |
348b8fc3 | 7114 | mlxsw_sp_rifs_fini(mlxsw_sp); |
b45f64d1 | 7115 | __mlxsw_sp_router_fini(mlxsw_sp); |
9011b677 | 7116 | kfree(mlxsw_sp->router); |
b45f64d1 | 7117 | } |