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> |
c723c735 | 49 | #include <net/netevent.h> |
6cf3c971 JP |
50 | #include <net/neighbour.h> |
51 | #include <net/arp.h> | |
b45f64d1 | 52 | #include <net/ip_fib.h> |
583419fd | 53 | #include <net/ip6_fib.h> |
5d7bfd14 | 54 | #include <net/fib_rules.h> |
6ddb7426 | 55 | #include <net/ip_tunnels.h> |
57837885 | 56 | #include <net/l3mdev.h> |
5ea1237f | 57 | #include <net/addrconf.h> |
d5eb89cf AS |
58 | #include <net/ndisc.h> |
59 | #include <net/ipv6.h> | |
04b1d4e5 | 60 | #include <net/fib_notifier.h> |
464dce18 IS |
61 | |
62 | #include "spectrum.h" | |
63 | #include "core.h" | |
64 | #include "reg.h" | |
e0c0afd8 AS |
65 | #include "spectrum_cnt.h" |
66 | #include "spectrum_dpipe.h" | |
38ebc0f4 | 67 | #include "spectrum_ipip.h" |
e0c0afd8 | 68 | #include "spectrum_router.h" |
464dce18 | 69 | |
9011b677 IS |
70 | struct mlxsw_sp_vr; |
71 | struct mlxsw_sp_lpm_tree; | |
e4f3c1c1 | 72 | struct mlxsw_sp_rif_ops; |
9011b677 IS |
73 | |
74 | struct mlxsw_sp_router { | |
75 | struct mlxsw_sp *mlxsw_sp; | |
5f9efffb | 76 | struct mlxsw_sp_rif **rifs; |
9011b677 IS |
77 | struct mlxsw_sp_vr *vrs; |
78 | struct rhashtable neigh_ht; | |
79 | struct rhashtable nexthop_group_ht; | |
80 | struct rhashtable nexthop_ht; | |
81 | struct { | |
82 | struct mlxsw_sp_lpm_tree *trees; | |
83 | unsigned int tree_count; | |
84 | } lpm; | |
85 | struct { | |
86 | struct delayed_work dw; | |
87 | unsigned long interval; /* ms */ | |
88 | } neighs_update; | |
89 | struct delayed_work nexthop_probe_dw; | |
90 | #define MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL 5000 /* ms */ | |
91 | struct list_head nexthop_neighs_list; | |
92 | bool aborted; | |
7e39d115 | 93 | struct notifier_block fib_nb; |
e4f3c1c1 | 94 | const struct mlxsw_sp_rif_ops **rif_ops_arr; |
38ebc0f4 | 95 | const struct mlxsw_sp_ipip_ops **ipip_ops_arr; |
9011b677 IS |
96 | }; |
97 | ||
4724ba56 IS |
98 | struct mlxsw_sp_rif { |
99 | struct list_head nexthop_list; | |
100 | struct list_head neigh_list; | |
101 | struct net_device *dev; | |
a1107487 | 102 | struct mlxsw_sp_fid *fid; |
4724ba56 IS |
103 | unsigned char addr[ETH_ALEN]; |
104 | int mtu; | |
bf95233e | 105 | u16 rif_index; |
6913229e | 106 | u16 vr_id; |
e4f3c1c1 IS |
107 | const struct mlxsw_sp_rif_ops *ops; |
108 | struct mlxsw_sp *mlxsw_sp; | |
109 | ||
e0c0afd8 AS |
110 | unsigned int counter_ingress; |
111 | bool counter_ingress_valid; | |
112 | unsigned int counter_egress; | |
113 | bool counter_egress_valid; | |
4724ba56 IS |
114 | }; |
115 | ||
e4f3c1c1 IS |
116 | struct mlxsw_sp_rif_params { |
117 | struct net_device *dev; | |
118 | union { | |
119 | u16 system_port; | |
120 | u16 lag_id; | |
121 | }; | |
122 | u16 vid; | |
123 | bool lag; | |
124 | }; | |
125 | ||
4d93ceeb IS |
126 | struct mlxsw_sp_rif_subport { |
127 | struct mlxsw_sp_rif common; | |
128 | union { | |
129 | u16 system_port; | |
130 | u16 lag_id; | |
131 | }; | |
132 | u16 vid; | |
133 | bool lag; | |
134 | }; | |
135 | ||
6ddb7426 PM |
136 | struct mlxsw_sp_rif_ipip_lb { |
137 | struct mlxsw_sp_rif common; | |
138 | struct mlxsw_sp_rif_ipip_lb_config lb_config; | |
139 | u16 ul_vr_id; /* Reserved for Spectrum-2. */ | |
140 | }; | |
141 | ||
142 | struct mlxsw_sp_rif_params_ipip_lb { | |
143 | struct mlxsw_sp_rif_params common; | |
144 | struct mlxsw_sp_rif_ipip_lb_config lb_config; | |
145 | }; | |
146 | ||
e4f3c1c1 IS |
147 | struct mlxsw_sp_rif_ops { |
148 | enum mlxsw_sp_rif_type type; | |
149 | size_t rif_size; | |
150 | ||
151 | void (*setup)(struct mlxsw_sp_rif *rif, | |
152 | const struct mlxsw_sp_rif_params *params); | |
153 | int (*configure)(struct mlxsw_sp_rif *rif); | |
154 | void (*deconfigure)(struct mlxsw_sp_rif *rif); | |
155 | struct mlxsw_sp_fid * (*fid_get)(struct mlxsw_sp_rif *rif); | |
156 | }; | |
157 | ||
e0c0afd8 AS |
158 | static unsigned int * |
159 | mlxsw_sp_rif_p_counter_get(struct mlxsw_sp_rif *rif, | |
160 | enum mlxsw_sp_rif_counter_dir dir) | |
161 | { | |
162 | switch (dir) { | |
163 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
164 | return &rif->counter_egress; | |
165 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
166 | return &rif->counter_ingress; | |
167 | } | |
168 | return NULL; | |
169 | } | |
170 | ||
171 | static bool | |
172 | mlxsw_sp_rif_counter_valid_get(struct mlxsw_sp_rif *rif, | |
173 | enum mlxsw_sp_rif_counter_dir dir) | |
174 | { | |
175 | switch (dir) { | |
176 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
177 | return rif->counter_egress_valid; | |
178 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
179 | return rif->counter_ingress_valid; | |
180 | } | |
181 | return false; | |
182 | } | |
183 | ||
184 | static void | |
185 | mlxsw_sp_rif_counter_valid_set(struct mlxsw_sp_rif *rif, | |
186 | enum mlxsw_sp_rif_counter_dir dir, | |
187 | bool valid) | |
188 | { | |
189 | switch (dir) { | |
190 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
191 | rif->counter_egress_valid = valid; | |
192 | break; | |
193 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
194 | rif->counter_ingress_valid = valid; | |
195 | break; | |
196 | } | |
197 | } | |
198 | ||
199 | static int mlxsw_sp_rif_counter_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, | |
200 | unsigned int counter_index, bool enable, | |
201 | enum mlxsw_sp_rif_counter_dir dir) | |
202 | { | |
203 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
204 | bool is_egress = false; | |
205 | int err; | |
206 | ||
207 | if (dir == MLXSW_SP_RIF_COUNTER_EGRESS) | |
208 | is_egress = true; | |
209 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); | |
210 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
211 | if (err) | |
212 | return err; | |
213 | ||
214 | mlxsw_reg_ritr_counter_pack(ritr_pl, counter_index, enable, | |
215 | is_egress); | |
216 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
217 | } | |
218 | ||
219 | int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp, | |
220 | struct mlxsw_sp_rif *rif, | |
221 | enum mlxsw_sp_rif_counter_dir dir, u64 *cnt) | |
222 | { | |
223 | char ricnt_pl[MLXSW_REG_RICNT_LEN]; | |
224 | unsigned int *p_counter_index; | |
225 | bool valid; | |
226 | int err; | |
227 | ||
228 | valid = mlxsw_sp_rif_counter_valid_get(rif, dir); | |
229 | if (!valid) | |
230 | return -EINVAL; | |
231 | ||
232 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); | |
233 | if (!p_counter_index) | |
234 | return -EINVAL; | |
235 | mlxsw_reg_ricnt_pack(ricnt_pl, *p_counter_index, | |
236 | MLXSW_REG_RICNT_OPCODE_NOP); | |
237 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); | |
238 | if (err) | |
239 | return err; | |
240 | *cnt = mlxsw_reg_ricnt_good_unicast_packets_get(ricnt_pl); | |
241 | return 0; | |
242 | } | |
243 | ||
244 | static int mlxsw_sp_rif_counter_clear(struct mlxsw_sp *mlxsw_sp, | |
245 | unsigned int counter_index) | |
246 | { | |
247 | char ricnt_pl[MLXSW_REG_RICNT_LEN]; | |
248 | ||
249 | mlxsw_reg_ricnt_pack(ricnt_pl, counter_index, | |
250 | MLXSW_REG_RICNT_OPCODE_CLEAR); | |
251 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); | |
252 | } | |
253 | ||
254 | int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp *mlxsw_sp, | |
255 | struct mlxsw_sp_rif *rif, | |
256 | enum mlxsw_sp_rif_counter_dir dir) | |
257 | { | |
258 | unsigned int *p_counter_index; | |
259 | int err; | |
260 | ||
261 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); | |
262 | if (!p_counter_index) | |
263 | return -EINVAL; | |
264 | err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
265 | p_counter_index); | |
266 | if (err) | |
267 | return err; | |
268 | ||
269 | err = mlxsw_sp_rif_counter_clear(mlxsw_sp, *p_counter_index); | |
270 | if (err) | |
271 | goto err_counter_clear; | |
272 | ||
273 | err = mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index, | |
274 | *p_counter_index, true, dir); | |
275 | if (err) | |
276 | goto err_counter_edit; | |
277 | mlxsw_sp_rif_counter_valid_set(rif, dir, true); | |
278 | return 0; | |
279 | ||
280 | err_counter_edit: | |
281 | err_counter_clear: | |
282 | mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
283 | *p_counter_index); | |
284 | return err; | |
285 | } | |
286 | ||
287 | void mlxsw_sp_rif_counter_free(struct mlxsw_sp *mlxsw_sp, | |
288 | struct mlxsw_sp_rif *rif, | |
289 | enum mlxsw_sp_rif_counter_dir dir) | |
290 | { | |
291 | unsigned int *p_counter_index; | |
292 | ||
6b1206bb AS |
293 | if (!mlxsw_sp_rif_counter_valid_get(rif, dir)) |
294 | return; | |
295 | ||
e0c0afd8 AS |
296 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); |
297 | if (WARN_ON(!p_counter_index)) | |
298 | return; | |
299 | mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index, | |
300 | *p_counter_index, false, dir); | |
301 | mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
302 | *p_counter_index); | |
303 | mlxsw_sp_rif_counter_valid_set(rif, dir, false); | |
304 | } | |
305 | ||
e4f3c1c1 IS |
306 | static void mlxsw_sp_rif_counters_alloc(struct mlxsw_sp_rif *rif) |
307 | { | |
308 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
309 | struct devlink *devlink; | |
310 | ||
311 | devlink = priv_to_devlink(mlxsw_sp->core); | |
312 | if (!devlink_dpipe_table_counter_enabled(devlink, | |
313 | MLXSW_SP_DPIPE_TABLE_NAME_ERIF)) | |
314 | return; | |
315 | mlxsw_sp_rif_counter_alloc(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_EGRESS); | |
316 | } | |
317 | ||
318 | static void mlxsw_sp_rif_counters_free(struct mlxsw_sp_rif *rif) | |
319 | { | |
320 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
321 | ||
322 | mlxsw_sp_rif_counter_free(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_EGRESS); | |
323 | } | |
324 | ||
4724ba56 IS |
325 | static struct mlxsw_sp_rif * |
326 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
327 | const struct net_device *dev); | |
328 | ||
7dcc18ad | 329 | #define MLXSW_SP_PREFIX_COUNT (sizeof(struct in6_addr) * BITS_PER_BYTE + 1) |
9011b677 IS |
330 | |
331 | struct mlxsw_sp_prefix_usage { | |
332 | DECLARE_BITMAP(b, MLXSW_SP_PREFIX_COUNT); | |
333 | }; | |
334 | ||
53342023 JP |
335 | #define mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) \ |
336 | for_each_set_bit(prefix, (prefix_usage)->b, MLXSW_SP_PREFIX_COUNT) | |
337 | ||
338 | static bool | |
339 | mlxsw_sp_prefix_usage_eq(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
340 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
341 | { | |
342 | return !memcmp(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
343 | } | |
344 | ||
6b75c480 JP |
345 | static bool |
346 | mlxsw_sp_prefix_usage_none(struct mlxsw_sp_prefix_usage *prefix_usage) | |
347 | { | |
348 | struct mlxsw_sp_prefix_usage prefix_usage_none = {{ 0 } }; | |
349 | ||
350 | return mlxsw_sp_prefix_usage_eq(prefix_usage, &prefix_usage_none); | |
351 | } | |
352 | ||
353 | static void | |
354 | mlxsw_sp_prefix_usage_cpy(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
355 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
356 | { | |
357 | memcpy(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
358 | } | |
359 | ||
5e9c16cc JP |
360 | static void |
361 | mlxsw_sp_prefix_usage_set(struct mlxsw_sp_prefix_usage *prefix_usage, | |
362 | unsigned char prefix_len) | |
363 | { | |
364 | set_bit(prefix_len, prefix_usage->b); | |
365 | } | |
366 | ||
367 | static void | |
368 | mlxsw_sp_prefix_usage_clear(struct mlxsw_sp_prefix_usage *prefix_usage, | |
369 | unsigned char prefix_len) | |
370 | { | |
371 | clear_bit(prefix_len, prefix_usage->b); | |
372 | } | |
373 | ||
374 | struct mlxsw_sp_fib_key { | |
375 | unsigned char addr[sizeof(struct in6_addr)]; | |
376 | unsigned char prefix_len; | |
377 | }; | |
378 | ||
61c503f9 JP |
379 | enum mlxsw_sp_fib_entry_type { |
380 | MLXSW_SP_FIB_ENTRY_TYPE_REMOTE, | |
381 | MLXSW_SP_FIB_ENTRY_TYPE_LOCAL, | |
382 | MLXSW_SP_FIB_ENTRY_TYPE_TRAP, | |
383 | }; | |
384 | ||
a7ff87ac | 385 | struct mlxsw_sp_nexthop_group; |
9011b677 | 386 | struct mlxsw_sp_fib; |
a7ff87ac | 387 | |
9aecce1c IS |
388 | struct mlxsw_sp_fib_node { |
389 | struct list_head entry_list; | |
b45f64d1 | 390 | struct list_head list; |
9aecce1c | 391 | struct rhash_head ht_node; |
76610ebb | 392 | struct mlxsw_sp_fib *fib; |
5e9c16cc | 393 | struct mlxsw_sp_fib_key key; |
9aecce1c IS |
394 | }; |
395 | ||
9aecce1c IS |
396 | struct mlxsw_sp_fib_entry { |
397 | struct list_head list; | |
398 | struct mlxsw_sp_fib_node *fib_node; | |
61c503f9 | 399 | enum mlxsw_sp_fib_entry_type type; |
a7ff87ac JP |
400 | struct list_head nexthop_group_node; |
401 | struct mlxsw_sp_nexthop_group *nh_group; | |
5e9c16cc JP |
402 | }; |
403 | ||
4f1c7f1f IS |
404 | struct mlxsw_sp_fib4_entry { |
405 | struct mlxsw_sp_fib_entry common; | |
406 | u32 tb_id; | |
407 | u32 prio; | |
408 | u8 tos; | |
409 | u8 type; | |
410 | }; | |
411 | ||
428b851f IS |
412 | struct mlxsw_sp_fib6_entry { |
413 | struct mlxsw_sp_fib_entry common; | |
414 | struct list_head rt6_list; | |
415 | unsigned int nrt6; | |
416 | }; | |
417 | ||
418 | struct mlxsw_sp_rt6 { | |
419 | struct list_head list; | |
420 | struct rt6_info *rt; | |
421 | }; | |
422 | ||
9011b677 IS |
423 | struct mlxsw_sp_lpm_tree { |
424 | u8 id; /* tree ID */ | |
425 | unsigned int ref_count; | |
426 | enum mlxsw_sp_l3proto proto; | |
427 | struct mlxsw_sp_prefix_usage prefix_usage; | |
428 | }; | |
429 | ||
5e9c16cc JP |
430 | struct mlxsw_sp_fib { |
431 | struct rhashtable ht; | |
9aecce1c | 432 | struct list_head node_list; |
76610ebb IS |
433 | struct mlxsw_sp_vr *vr; |
434 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
5e9c16cc JP |
435 | unsigned long prefix_ref_count[MLXSW_SP_PREFIX_COUNT]; |
436 | struct mlxsw_sp_prefix_usage prefix_usage; | |
76610ebb | 437 | enum mlxsw_sp_l3proto proto; |
5e9c16cc JP |
438 | }; |
439 | ||
9011b677 IS |
440 | struct mlxsw_sp_vr { |
441 | u16 id; /* virtual router ID */ | |
442 | u32 tb_id; /* kernel fib table id */ | |
443 | unsigned int rif_count; | |
444 | struct mlxsw_sp_fib *fib4; | |
a3d9bc50 | 445 | struct mlxsw_sp_fib *fib6; |
9011b677 IS |
446 | }; |
447 | ||
9aecce1c | 448 | static const struct rhashtable_params mlxsw_sp_fib_ht_params; |
5e9c16cc | 449 | |
76610ebb IS |
450 | static struct mlxsw_sp_fib *mlxsw_sp_fib_create(struct mlxsw_sp_vr *vr, |
451 | enum mlxsw_sp_l3proto proto) | |
5e9c16cc JP |
452 | { |
453 | struct mlxsw_sp_fib *fib; | |
454 | int err; | |
455 | ||
456 | fib = kzalloc(sizeof(*fib), GFP_KERNEL); | |
457 | if (!fib) | |
458 | return ERR_PTR(-ENOMEM); | |
459 | err = rhashtable_init(&fib->ht, &mlxsw_sp_fib_ht_params); | |
460 | if (err) | |
461 | goto err_rhashtable_init; | |
9aecce1c | 462 | INIT_LIST_HEAD(&fib->node_list); |
76610ebb IS |
463 | fib->proto = proto; |
464 | fib->vr = vr; | |
5e9c16cc JP |
465 | return fib; |
466 | ||
467 | err_rhashtable_init: | |
468 | kfree(fib); | |
469 | return ERR_PTR(err); | |
470 | } | |
471 | ||
472 | static void mlxsw_sp_fib_destroy(struct mlxsw_sp_fib *fib) | |
473 | { | |
9aecce1c | 474 | WARN_ON(!list_empty(&fib->node_list)); |
76610ebb | 475 | WARN_ON(fib->lpm_tree); |
5e9c16cc JP |
476 | rhashtable_destroy(&fib->ht); |
477 | kfree(fib); | |
478 | } | |
479 | ||
53342023 | 480 | static struct mlxsw_sp_lpm_tree * |
382dbb40 | 481 | mlxsw_sp_lpm_tree_find_unused(struct mlxsw_sp *mlxsw_sp) |
53342023 JP |
482 | { |
483 | static struct mlxsw_sp_lpm_tree *lpm_tree; | |
484 | int i; | |
485 | ||
9011b677 IS |
486 | for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { |
487 | lpm_tree = &mlxsw_sp->router->lpm.trees[i]; | |
382dbb40 IS |
488 | if (lpm_tree->ref_count == 0) |
489 | return lpm_tree; | |
53342023 JP |
490 | } |
491 | return NULL; | |
492 | } | |
493 | ||
494 | static int mlxsw_sp_lpm_tree_alloc(struct mlxsw_sp *mlxsw_sp, | |
495 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
496 | { | |
497 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
498 | ||
1a9234e6 IS |
499 | mlxsw_reg_ralta_pack(ralta_pl, true, |
500 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
501 | lpm_tree->id); | |
53342023 JP |
502 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
503 | } | |
504 | ||
cc702670 IS |
505 | static void mlxsw_sp_lpm_tree_free(struct mlxsw_sp *mlxsw_sp, |
506 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
53342023 JP |
507 | { |
508 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
509 | ||
1a9234e6 IS |
510 | mlxsw_reg_ralta_pack(ralta_pl, false, |
511 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
512 | lpm_tree->id); | |
cc702670 | 513 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
53342023 JP |
514 | } |
515 | ||
516 | static int | |
517 | mlxsw_sp_lpm_tree_left_struct_set(struct mlxsw_sp *mlxsw_sp, | |
518 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
519 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
520 | { | |
521 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
522 | u8 root_bin = 0; | |
523 | u8 prefix; | |
524 | u8 last_prefix = MLXSW_REG_RALST_BIN_NO_CHILD; | |
525 | ||
526 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) | |
527 | root_bin = prefix; | |
528 | ||
529 | mlxsw_reg_ralst_pack(ralst_pl, root_bin, lpm_tree->id); | |
530 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) { | |
531 | if (prefix == 0) | |
532 | continue; | |
533 | mlxsw_reg_ralst_bin_pack(ralst_pl, prefix, last_prefix, | |
534 | MLXSW_REG_RALST_BIN_NO_CHILD); | |
535 | last_prefix = prefix; | |
536 | } | |
537 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); | |
538 | } | |
539 | ||
540 | static struct mlxsw_sp_lpm_tree * | |
541 | mlxsw_sp_lpm_tree_create(struct mlxsw_sp *mlxsw_sp, | |
542 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 543 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
544 | { |
545 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
546 | int err; | |
547 | ||
382dbb40 | 548 | lpm_tree = mlxsw_sp_lpm_tree_find_unused(mlxsw_sp); |
53342023 JP |
549 | if (!lpm_tree) |
550 | return ERR_PTR(-EBUSY); | |
551 | lpm_tree->proto = proto; | |
552 | err = mlxsw_sp_lpm_tree_alloc(mlxsw_sp, lpm_tree); | |
553 | if (err) | |
554 | return ERR_PTR(err); | |
555 | ||
556 | err = mlxsw_sp_lpm_tree_left_struct_set(mlxsw_sp, prefix_usage, | |
557 | lpm_tree); | |
558 | if (err) | |
559 | goto err_left_struct_set; | |
2083d367 JP |
560 | memcpy(&lpm_tree->prefix_usage, prefix_usage, |
561 | sizeof(lpm_tree->prefix_usage)); | |
53342023 JP |
562 | return lpm_tree; |
563 | ||
564 | err_left_struct_set: | |
565 | mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); | |
566 | return ERR_PTR(err); | |
567 | } | |
568 | ||
cc702670 IS |
569 | static void mlxsw_sp_lpm_tree_destroy(struct mlxsw_sp *mlxsw_sp, |
570 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
53342023 | 571 | { |
cc702670 | 572 | mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); |
53342023 JP |
573 | } |
574 | ||
575 | static struct mlxsw_sp_lpm_tree * | |
576 | mlxsw_sp_lpm_tree_get(struct mlxsw_sp *mlxsw_sp, | |
577 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 578 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
579 | { |
580 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
581 | int i; | |
582 | ||
9011b677 IS |
583 | for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { |
584 | lpm_tree = &mlxsw_sp->router->lpm.trees[i]; | |
8b99becd JP |
585 | if (lpm_tree->ref_count != 0 && |
586 | lpm_tree->proto == proto && | |
53342023 JP |
587 | mlxsw_sp_prefix_usage_eq(&lpm_tree->prefix_usage, |
588 | prefix_usage)) | |
fc922bb0 | 589 | return lpm_tree; |
53342023 | 590 | } |
fc922bb0 IS |
591 | return mlxsw_sp_lpm_tree_create(mlxsw_sp, prefix_usage, proto); |
592 | } | |
53342023 | 593 | |
fc922bb0 IS |
594 | static void mlxsw_sp_lpm_tree_hold(struct mlxsw_sp_lpm_tree *lpm_tree) |
595 | { | |
53342023 | 596 | lpm_tree->ref_count++; |
53342023 JP |
597 | } |
598 | ||
cc702670 IS |
599 | static void mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp, |
600 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
53342023 JP |
601 | { |
602 | if (--lpm_tree->ref_count == 0) | |
cc702670 | 603 | mlxsw_sp_lpm_tree_destroy(mlxsw_sp, lpm_tree); |
53342023 JP |
604 | } |
605 | ||
d7a60306 | 606 | #define MLXSW_SP_LPM_TREE_MIN 1 /* tree 0 is reserved */ |
8494ab06 IS |
607 | |
608 | static int mlxsw_sp_lpm_init(struct mlxsw_sp *mlxsw_sp) | |
53342023 JP |
609 | { |
610 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
8494ab06 | 611 | u64 max_trees; |
53342023 JP |
612 | int i; |
613 | ||
8494ab06 IS |
614 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LPM_TREES)) |
615 | return -EIO; | |
616 | ||
617 | max_trees = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LPM_TREES); | |
9011b677 IS |
618 | mlxsw_sp->router->lpm.tree_count = max_trees - MLXSW_SP_LPM_TREE_MIN; |
619 | mlxsw_sp->router->lpm.trees = kcalloc(mlxsw_sp->router->lpm.tree_count, | |
8494ab06 IS |
620 | sizeof(struct mlxsw_sp_lpm_tree), |
621 | GFP_KERNEL); | |
9011b677 | 622 | if (!mlxsw_sp->router->lpm.trees) |
8494ab06 IS |
623 | return -ENOMEM; |
624 | ||
9011b677 IS |
625 | for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { |
626 | lpm_tree = &mlxsw_sp->router->lpm.trees[i]; | |
53342023 JP |
627 | lpm_tree->id = i + MLXSW_SP_LPM_TREE_MIN; |
628 | } | |
8494ab06 IS |
629 | |
630 | return 0; | |
631 | } | |
632 | ||
633 | static void mlxsw_sp_lpm_fini(struct mlxsw_sp *mlxsw_sp) | |
634 | { | |
9011b677 | 635 | kfree(mlxsw_sp->router->lpm.trees); |
53342023 JP |
636 | } |
637 | ||
76610ebb IS |
638 | static bool mlxsw_sp_vr_is_used(const struct mlxsw_sp_vr *vr) |
639 | { | |
a3d9bc50 | 640 | return !!vr->fib4 || !!vr->fib6; |
76610ebb IS |
641 | } |
642 | ||
6b75c480 JP |
643 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find_unused(struct mlxsw_sp *mlxsw_sp) |
644 | { | |
645 | struct mlxsw_sp_vr *vr; | |
646 | int i; | |
647 | ||
c1a38311 | 648 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 649 | vr = &mlxsw_sp->router->vrs[i]; |
76610ebb | 650 | if (!mlxsw_sp_vr_is_used(vr)) |
6b75c480 JP |
651 | return vr; |
652 | } | |
653 | return NULL; | |
654 | } | |
655 | ||
656 | static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp, | |
0adb214b | 657 | const struct mlxsw_sp_fib *fib, u8 tree_id) |
6b75c480 JP |
658 | { |
659 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
660 | ||
76610ebb IS |
661 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
662 | (enum mlxsw_reg_ralxx_protocol) fib->proto, | |
0adb214b | 663 | tree_id); |
6b75c480 JP |
664 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
665 | } | |
666 | ||
667 | static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 668 | const struct mlxsw_sp_fib *fib) |
6b75c480 JP |
669 | { |
670 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
671 | ||
672 | /* Bind to tree 0 which is default */ | |
76610ebb IS |
673 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
674 | (enum mlxsw_reg_ralxx_protocol) fib->proto, 0); | |
6b75c480 JP |
675 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
676 | } | |
677 | ||
678 | static u32 mlxsw_sp_fix_tb_id(u32 tb_id) | |
679 | { | |
680 | /* For our purpose, squash main and local table into one */ | |
681 | if (tb_id == RT_TABLE_LOCAL) | |
682 | tb_id = RT_TABLE_MAIN; | |
683 | return tb_id; | |
684 | } | |
685 | ||
686 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 687 | u32 tb_id) |
6b75c480 JP |
688 | { |
689 | struct mlxsw_sp_vr *vr; | |
690 | int i; | |
691 | ||
692 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
9497c042 | 693 | |
c1a38311 | 694 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 695 | vr = &mlxsw_sp->router->vrs[i]; |
76610ebb | 696 | if (mlxsw_sp_vr_is_used(vr) && vr->tb_id == tb_id) |
6b75c480 JP |
697 | return vr; |
698 | } | |
699 | return NULL; | |
700 | } | |
701 | ||
76610ebb IS |
702 | static struct mlxsw_sp_fib *mlxsw_sp_vr_fib(const struct mlxsw_sp_vr *vr, |
703 | enum mlxsw_sp_l3proto proto) | |
704 | { | |
705 | switch (proto) { | |
706 | case MLXSW_SP_L3_PROTO_IPV4: | |
707 | return vr->fib4; | |
708 | case MLXSW_SP_L3_PROTO_IPV6: | |
a3d9bc50 | 709 | return vr->fib6; |
76610ebb IS |
710 | } |
711 | return NULL; | |
712 | } | |
713 | ||
6b75c480 | 714 | static struct mlxsw_sp_vr *mlxsw_sp_vr_create(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 715 | u32 tb_id) |
6b75c480 | 716 | { |
6b75c480 | 717 | struct mlxsw_sp_vr *vr; |
a3d9bc50 | 718 | int err; |
6b75c480 JP |
719 | |
720 | vr = mlxsw_sp_vr_find_unused(mlxsw_sp); | |
721 | if (!vr) | |
722 | return ERR_PTR(-EBUSY); | |
76610ebb IS |
723 | vr->fib4 = mlxsw_sp_fib_create(vr, MLXSW_SP_L3_PROTO_IPV4); |
724 | if (IS_ERR(vr->fib4)) | |
725 | return ERR_CAST(vr->fib4); | |
a3d9bc50 IS |
726 | vr->fib6 = mlxsw_sp_fib_create(vr, MLXSW_SP_L3_PROTO_IPV6); |
727 | if (IS_ERR(vr->fib6)) { | |
728 | err = PTR_ERR(vr->fib6); | |
729 | goto err_fib6_create; | |
730 | } | |
6b75c480 | 731 | vr->tb_id = tb_id; |
6b75c480 | 732 | return vr; |
a3d9bc50 IS |
733 | |
734 | err_fib6_create: | |
735 | mlxsw_sp_fib_destroy(vr->fib4); | |
736 | vr->fib4 = NULL; | |
737 | return ERR_PTR(err); | |
6b75c480 JP |
738 | } |
739 | ||
76610ebb | 740 | static void mlxsw_sp_vr_destroy(struct mlxsw_sp_vr *vr) |
6b75c480 | 741 | { |
a3d9bc50 IS |
742 | mlxsw_sp_fib_destroy(vr->fib6); |
743 | vr->fib6 = NULL; | |
76610ebb IS |
744 | mlxsw_sp_fib_destroy(vr->fib4); |
745 | vr->fib4 = NULL; | |
6b75c480 JP |
746 | } |
747 | ||
76610ebb | 748 | static struct mlxsw_sp_vr *mlxsw_sp_vr_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id) |
6b75c480 JP |
749 | { |
750 | struct mlxsw_sp_vr *vr; | |
6b75c480 JP |
751 | |
752 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
76610ebb IS |
753 | vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id); |
754 | if (!vr) | |
755 | vr = mlxsw_sp_vr_create(mlxsw_sp, tb_id); | |
6b75c480 JP |
756 | return vr; |
757 | } | |
758 | ||
76610ebb | 759 | static void mlxsw_sp_vr_put(struct mlxsw_sp_vr *vr) |
6b75c480 | 760 | { |
a3d9bc50 IS |
761 | if (!vr->rif_count && list_empty(&vr->fib4->node_list) && |
762 | list_empty(&vr->fib6->node_list)) | |
76610ebb | 763 | mlxsw_sp_vr_destroy(vr); |
6b75c480 JP |
764 | } |
765 | ||
fc922bb0 IS |
766 | static bool |
767 | mlxsw_sp_vr_lpm_tree_should_replace(struct mlxsw_sp_vr *vr, | |
768 | enum mlxsw_sp_l3proto proto, u8 tree_id) | |
769 | { | |
770 | struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); | |
771 | ||
772 | if (!mlxsw_sp_vr_is_used(vr)) | |
773 | return false; | |
774 | if (fib->lpm_tree && fib->lpm_tree->id == tree_id) | |
775 | return true; | |
776 | return false; | |
777 | } | |
778 | ||
779 | static int mlxsw_sp_vr_lpm_tree_replace(struct mlxsw_sp *mlxsw_sp, | |
780 | struct mlxsw_sp_fib *fib, | |
781 | struct mlxsw_sp_lpm_tree *new_tree) | |
782 | { | |
783 | struct mlxsw_sp_lpm_tree *old_tree = fib->lpm_tree; | |
784 | int err; | |
785 | ||
786 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib, new_tree->id); | |
787 | if (err) | |
788 | return err; | |
789 | fib->lpm_tree = new_tree; | |
790 | mlxsw_sp_lpm_tree_hold(new_tree); | |
791 | mlxsw_sp_lpm_tree_put(mlxsw_sp, old_tree); | |
792 | return 0; | |
793 | } | |
794 | ||
795 | static int mlxsw_sp_vrs_lpm_tree_replace(struct mlxsw_sp *mlxsw_sp, | |
796 | struct mlxsw_sp_fib *fib, | |
797 | struct mlxsw_sp_lpm_tree *new_tree) | |
798 | { | |
799 | struct mlxsw_sp_lpm_tree *old_tree = fib->lpm_tree; | |
800 | enum mlxsw_sp_l3proto proto = fib->proto; | |
801 | u8 old_id, new_id = new_tree->id; | |
802 | struct mlxsw_sp_vr *vr; | |
803 | int i, err; | |
804 | ||
805 | if (!old_tree) | |
806 | goto no_replace; | |
807 | old_id = old_tree->id; | |
808 | ||
809 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { | |
810 | vr = &mlxsw_sp->router->vrs[i]; | |
811 | if (!mlxsw_sp_vr_lpm_tree_should_replace(vr, proto, old_id)) | |
812 | continue; | |
813 | err = mlxsw_sp_vr_lpm_tree_replace(mlxsw_sp, | |
814 | mlxsw_sp_vr_fib(vr, proto), | |
815 | new_tree); | |
816 | if (err) | |
817 | goto err_tree_replace; | |
818 | } | |
819 | ||
820 | return 0; | |
821 | ||
822 | err_tree_replace: | |
823 | for (i--; i >= 0; i--) { | |
824 | if (!mlxsw_sp_vr_lpm_tree_should_replace(vr, proto, new_id)) | |
825 | continue; | |
826 | mlxsw_sp_vr_lpm_tree_replace(mlxsw_sp, | |
827 | mlxsw_sp_vr_fib(vr, proto), | |
828 | old_tree); | |
829 | } | |
830 | return err; | |
831 | ||
832 | no_replace: | |
833 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib, new_tree->id); | |
834 | if (err) | |
835 | return err; | |
836 | fib->lpm_tree = new_tree; | |
837 | mlxsw_sp_lpm_tree_hold(new_tree); | |
838 | return 0; | |
839 | } | |
840 | ||
841 | static void | |
842 | mlxsw_sp_vrs_prefixes(struct mlxsw_sp *mlxsw_sp, | |
843 | enum mlxsw_sp_l3proto proto, | |
844 | struct mlxsw_sp_prefix_usage *req_prefix_usage) | |
845 | { | |
846 | int i; | |
847 | ||
848 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { | |
849 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; | |
850 | struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); | |
851 | unsigned char prefix; | |
852 | ||
853 | if (!mlxsw_sp_vr_is_used(vr)) | |
854 | continue; | |
855 | mlxsw_sp_prefix_usage_for_each(prefix, &fib->prefix_usage) | |
856 | mlxsw_sp_prefix_usage_set(req_prefix_usage, prefix); | |
857 | } | |
858 | } | |
859 | ||
9497c042 | 860 | static int mlxsw_sp_vrs_init(struct mlxsw_sp *mlxsw_sp) |
6b75c480 JP |
861 | { |
862 | struct mlxsw_sp_vr *vr; | |
c1a38311 | 863 | u64 max_vrs; |
6b75c480 JP |
864 | int i; |
865 | ||
c1a38311 | 866 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_VRS)) |
9497c042 NF |
867 | return -EIO; |
868 | ||
c1a38311 | 869 | max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); |
9011b677 IS |
870 | mlxsw_sp->router->vrs = kcalloc(max_vrs, sizeof(struct mlxsw_sp_vr), |
871 | GFP_KERNEL); | |
872 | if (!mlxsw_sp->router->vrs) | |
9497c042 NF |
873 | return -ENOMEM; |
874 | ||
c1a38311 | 875 | for (i = 0; i < max_vrs; i++) { |
9011b677 | 876 | vr = &mlxsw_sp->router->vrs[i]; |
6b75c480 JP |
877 | vr->id = i; |
878 | } | |
9497c042 NF |
879 | |
880 | return 0; | |
881 | } | |
882 | ||
ac571de9 IS |
883 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp); |
884 | ||
9497c042 NF |
885 | static void mlxsw_sp_vrs_fini(struct mlxsw_sp *mlxsw_sp) |
886 | { | |
3057224e IS |
887 | /* At this stage we're guaranteed not to have new incoming |
888 | * FIB notifications and the work queue is free from FIBs | |
889 | * sitting on top of mlxsw netdevs. However, we can still | |
890 | * have other FIBs queued. Flush the queue before flushing | |
891 | * the device's tables. No need for locks, as we're the only | |
892 | * writer. | |
893 | */ | |
894 | mlxsw_core_flush_owq(); | |
ac571de9 | 895 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
9011b677 | 896 | kfree(mlxsw_sp->router->vrs); |
6b75c480 JP |
897 | } |
898 | ||
6ddb7426 PM |
899 | static struct net_device * |
900 | __mlxsw_sp_ipip_netdev_ul_dev_get(const struct net_device *ol_dev) | |
901 | { | |
902 | struct ip_tunnel *tun = netdev_priv(ol_dev); | |
903 | struct net *net = dev_net(ol_dev); | |
904 | ||
905 | return __dev_get_by_index(net, tun->parms.link); | |
906 | } | |
907 | ||
908 | static u32 mlxsw_sp_ipip_dev_ul_tb_id(const struct net_device *ol_dev) | |
909 | { | |
910 | struct net_device *d = __mlxsw_sp_ipip_netdev_ul_dev_get(ol_dev); | |
911 | ||
912 | if (d) | |
913 | return l3mdev_fib_table(d) ? : RT_TABLE_MAIN; | |
914 | else | |
915 | return l3mdev_fib_table(ol_dev) ? : RT_TABLE_MAIN; | |
916 | } | |
917 | ||
6cf3c971 | 918 | struct mlxsw_sp_neigh_key { |
33b1341c | 919 | struct neighbour *n; |
6cf3c971 JP |
920 | }; |
921 | ||
922 | struct mlxsw_sp_neigh_entry { | |
9665b745 | 923 | struct list_head rif_list_node; |
6cf3c971 JP |
924 | struct rhash_head ht_node; |
925 | struct mlxsw_sp_neigh_key key; | |
926 | u16 rif; | |
5c8802f1 | 927 | bool connected; |
a6bf9e93 | 928 | unsigned char ha[ETH_ALEN]; |
a7ff87ac JP |
929 | struct list_head nexthop_list; /* list of nexthops using |
930 | * this neigh entry | |
931 | */ | |
b2157149 | 932 | struct list_head nexthop_neighs_list_node; |
7cfcbc75 AS |
933 | unsigned int counter_index; |
934 | bool counter_valid; | |
6cf3c971 JP |
935 | }; |
936 | ||
937 | static const struct rhashtable_params mlxsw_sp_neigh_ht_params = { | |
938 | .key_offset = offsetof(struct mlxsw_sp_neigh_entry, key), | |
939 | .head_offset = offsetof(struct mlxsw_sp_neigh_entry, ht_node), | |
940 | .key_len = sizeof(struct mlxsw_sp_neigh_key), | |
941 | }; | |
942 | ||
f17cc84d AS |
943 | struct mlxsw_sp_neigh_entry * |
944 | mlxsw_sp_rif_neigh_next(struct mlxsw_sp_rif *rif, | |
945 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
946 | { | |
947 | if (!neigh_entry) { | |
948 | if (list_empty(&rif->neigh_list)) | |
949 | return NULL; | |
950 | else | |
951 | return list_first_entry(&rif->neigh_list, | |
952 | typeof(*neigh_entry), | |
953 | rif_list_node); | |
954 | } | |
955 | if (neigh_entry->rif_list_node.next == &rif->neigh_list) | |
956 | return NULL; | |
957 | return list_next_entry(neigh_entry, rif_list_node); | |
958 | } | |
959 | ||
960 | int mlxsw_sp_neigh_entry_type(struct mlxsw_sp_neigh_entry *neigh_entry) | |
961 | { | |
962 | return neigh_entry->key.n->tbl->family; | |
963 | } | |
964 | ||
965 | unsigned char * | |
966 | mlxsw_sp_neigh_entry_ha(struct mlxsw_sp_neigh_entry *neigh_entry) | |
967 | { | |
968 | return neigh_entry->ha; | |
969 | } | |
970 | ||
971 | u32 mlxsw_sp_neigh4_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry) | |
972 | { | |
973 | struct neighbour *n; | |
974 | ||
975 | n = neigh_entry->key.n; | |
976 | return ntohl(*((__be32 *) n->primary_key)); | |
977 | } | |
978 | ||
0250768c AS |
979 | struct in6_addr * |
980 | mlxsw_sp_neigh6_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry) | |
981 | { | |
982 | struct neighbour *n; | |
983 | ||
984 | n = neigh_entry->key.n; | |
985 | return (struct in6_addr *) &n->primary_key; | |
986 | } | |
987 | ||
7cfcbc75 AS |
988 | int mlxsw_sp_neigh_counter_get(struct mlxsw_sp *mlxsw_sp, |
989 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
990 | u64 *p_counter) | |
991 | { | |
992 | if (!neigh_entry->counter_valid) | |
993 | return -EINVAL; | |
994 | ||
995 | return mlxsw_sp_flow_counter_get(mlxsw_sp, neigh_entry->counter_index, | |
996 | p_counter, NULL); | |
997 | } | |
998 | ||
6cf3c971 | 999 | static struct mlxsw_sp_neigh_entry * |
5c8802f1 IS |
1000 | mlxsw_sp_neigh_entry_alloc(struct mlxsw_sp *mlxsw_sp, struct neighbour *n, |
1001 | u16 rif) | |
6cf3c971 JP |
1002 | { |
1003 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1004 | ||
5c8802f1 | 1005 | neigh_entry = kzalloc(sizeof(*neigh_entry), GFP_KERNEL); |
6cf3c971 JP |
1006 | if (!neigh_entry) |
1007 | return NULL; | |
5c8802f1 | 1008 | |
33b1341c | 1009 | neigh_entry->key.n = n; |
6cf3c971 | 1010 | neigh_entry->rif = rif; |
a7ff87ac | 1011 | INIT_LIST_HEAD(&neigh_entry->nexthop_list); |
5c8802f1 | 1012 | |
6cf3c971 JP |
1013 | return neigh_entry; |
1014 | } | |
1015 | ||
5c8802f1 | 1016 | static void mlxsw_sp_neigh_entry_free(struct mlxsw_sp_neigh_entry *neigh_entry) |
6cf3c971 JP |
1017 | { |
1018 | kfree(neigh_entry); | |
1019 | } | |
1020 | ||
5c8802f1 IS |
1021 | static int |
1022 | mlxsw_sp_neigh_entry_insert(struct mlxsw_sp *mlxsw_sp, | |
1023 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 1024 | { |
9011b677 | 1025 | return rhashtable_insert_fast(&mlxsw_sp->router->neigh_ht, |
5c8802f1 IS |
1026 | &neigh_entry->ht_node, |
1027 | mlxsw_sp_neigh_ht_params); | |
1028 | } | |
6cf3c971 | 1029 | |
5c8802f1 IS |
1030 | static void |
1031 | mlxsw_sp_neigh_entry_remove(struct mlxsw_sp *mlxsw_sp, | |
1032 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
1033 | { | |
9011b677 | 1034 | rhashtable_remove_fast(&mlxsw_sp->router->neigh_ht, |
5c8802f1 IS |
1035 | &neigh_entry->ht_node, |
1036 | mlxsw_sp_neigh_ht_params); | |
6cf3c971 JP |
1037 | } |
1038 | ||
7cfcbc75 | 1039 | static bool |
1ed5574c AS |
1040 | mlxsw_sp_neigh_counter_should_alloc(struct mlxsw_sp *mlxsw_sp, |
1041 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
7cfcbc75 AS |
1042 | { |
1043 | struct devlink *devlink; | |
1ed5574c AS |
1044 | const char *table_name; |
1045 | ||
1046 | switch (mlxsw_sp_neigh_entry_type(neigh_entry)) { | |
1047 | case AF_INET: | |
1048 | table_name = MLXSW_SP_DPIPE_TABLE_NAME_HOST4; | |
1049 | break; | |
1050 | case AF_INET6: | |
1051 | table_name = MLXSW_SP_DPIPE_TABLE_NAME_HOST6; | |
1052 | break; | |
1053 | default: | |
1054 | WARN_ON(1); | |
1055 | return false; | |
1056 | } | |
7cfcbc75 AS |
1057 | |
1058 | devlink = priv_to_devlink(mlxsw_sp->core); | |
1ed5574c | 1059 | return devlink_dpipe_table_counter_enabled(devlink, table_name); |
7cfcbc75 AS |
1060 | } |
1061 | ||
1062 | static void | |
1063 | mlxsw_sp_neigh_counter_alloc(struct mlxsw_sp *mlxsw_sp, | |
1064 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
1065 | { | |
1ed5574c | 1066 | if (!mlxsw_sp_neigh_counter_should_alloc(mlxsw_sp, neigh_entry)) |
7cfcbc75 AS |
1067 | return; |
1068 | ||
1069 | if (mlxsw_sp_flow_counter_alloc(mlxsw_sp, &neigh_entry->counter_index)) | |
1070 | return; | |
1071 | ||
1072 | neigh_entry->counter_valid = true; | |
1073 | } | |
1074 | ||
1075 | static void | |
1076 | mlxsw_sp_neigh_counter_free(struct mlxsw_sp *mlxsw_sp, | |
1077 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
1078 | { | |
1079 | if (!neigh_entry->counter_valid) | |
1080 | return; | |
1081 | mlxsw_sp_flow_counter_free(mlxsw_sp, | |
1082 | neigh_entry->counter_index); | |
1083 | neigh_entry->counter_valid = false; | |
1084 | } | |
1085 | ||
5c8802f1 IS |
1086 | static struct mlxsw_sp_neigh_entry * |
1087 | mlxsw_sp_neigh_entry_create(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
6cf3c971 | 1088 | { |
6cf3c971 | 1089 | struct mlxsw_sp_neigh_entry *neigh_entry; |
bf95233e | 1090 | struct mlxsw_sp_rif *rif; |
6cf3c971 JP |
1091 | int err; |
1092 | ||
bf95233e AS |
1093 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, n->dev); |
1094 | if (!rif) | |
5c8802f1 | 1095 | return ERR_PTR(-EINVAL); |
6cf3c971 | 1096 | |
bf95233e | 1097 | neigh_entry = mlxsw_sp_neigh_entry_alloc(mlxsw_sp, n, rif->rif_index); |
6cf3c971 | 1098 | if (!neigh_entry) |
5c8802f1 IS |
1099 | return ERR_PTR(-ENOMEM); |
1100 | ||
6cf3c971 JP |
1101 | err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry); |
1102 | if (err) | |
1103 | goto err_neigh_entry_insert; | |
5c8802f1 | 1104 | |
7cfcbc75 | 1105 | mlxsw_sp_neigh_counter_alloc(mlxsw_sp, neigh_entry); |
bf95233e | 1106 | list_add(&neigh_entry->rif_list_node, &rif->neigh_list); |
9665b745 | 1107 | |
5c8802f1 | 1108 | return neigh_entry; |
6cf3c971 JP |
1109 | |
1110 | err_neigh_entry_insert: | |
5c8802f1 IS |
1111 | mlxsw_sp_neigh_entry_free(neigh_entry); |
1112 | return ERR_PTR(err); | |
6cf3c971 JP |
1113 | } |
1114 | ||
5c8802f1 IS |
1115 | static void |
1116 | mlxsw_sp_neigh_entry_destroy(struct mlxsw_sp *mlxsw_sp, | |
1117 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 1118 | { |
9665b745 | 1119 | list_del(&neigh_entry->rif_list_node); |
7cfcbc75 | 1120 | mlxsw_sp_neigh_counter_free(mlxsw_sp, neigh_entry); |
5c8802f1 IS |
1121 | mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry); |
1122 | mlxsw_sp_neigh_entry_free(neigh_entry); | |
1123 | } | |
6cf3c971 | 1124 | |
5c8802f1 IS |
1125 | static struct mlxsw_sp_neigh_entry * |
1126 | mlxsw_sp_neigh_entry_lookup(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
1127 | { | |
1128 | struct mlxsw_sp_neigh_key key; | |
6cf3c971 | 1129 | |
5c8802f1 | 1130 | key.n = n; |
9011b677 | 1131 | return rhashtable_lookup_fast(&mlxsw_sp->router->neigh_ht, |
5c8802f1 | 1132 | &key, mlxsw_sp_neigh_ht_params); |
6cf3c971 JP |
1133 | } |
1134 | ||
c723c735 YG |
1135 | static void |
1136 | mlxsw_sp_router_neighs_update_interval_init(struct mlxsw_sp *mlxsw_sp) | |
1137 | { | |
a6c9b5d1 | 1138 | unsigned long interval; |
c723c735 | 1139 | |
b5f3e0d4 | 1140 | #if IS_ENABLED(CONFIG_IPV6) |
a6c9b5d1 AS |
1141 | interval = min_t(unsigned long, |
1142 | NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME), | |
1143 | NEIGH_VAR(&nd_tbl.parms, DELAY_PROBE_TIME)); | |
b5f3e0d4 IS |
1144 | #else |
1145 | interval = NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME); | |
1146 | #endif | |
9011b677 | 1147 | mlxsw_sp->router->neighs_update.interval = jiffies_to_msecs(interval); |
c723c735 YG |
1148 | } |
1149 | ||
1150 | static void mlxsw_sp_router_neigh_ent_ipv4_process(struct mlxsw_sp *mlxsw_sp, | |
1151 | char *rauhtd_pl, | |
1152 | int ent_index) | |
1153 | { | |
1154 | struct net_device *dev; | |
1155 | struct neighbour *n; | |
1156 | __be32 dipn; | |
1157 | u32 dip; | |
1158 | u16 rif; | |
1159 | ||
1160 | mlxsw_reg_rauhtd_ent_ipv4_unpack(rauhtd_pl, ent_index, &rif, &dip); | |
1161 | ||
5f9efffb | 1162 | if (!mlxsw_sp->router->rifs[rif]) { |
c723c735 YG |
1163 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n"); |
1164 | return; | |
1165 | } | |
1166 | ||
1167 | dipn = htonl(dip); | |
5f9efffb | 1168 | dev = mlxsw_sp->router->rifs[rif]->dev; |
c723c735 YG |
1169 | n = neigh_lookup(&arp_tbl, &dipn, dev); |
1170 | if (!n) { | |
1171 | netdev_err(dev, "Failed to find matching neighbour for IP=%pI4h\n", | |
1172 | &dip); | |
1173 | return; | |
1174 | } | |
1175 | ||
1176 | netdev_dbg(dev, "Updating neighbour with IP=%pI4h\n", &dip); | |
1177 | neigh_event_send(n, NULL); | |
1178 | neigh_release(n); | |
1179 | } | |
1180 | ||
df9a21f1 | 1181 | #if IS_ENABLED(CONFIG_IPV6) |
60f040ca AS |
1182 | static void mlxsw_sp_router_neigh_ent_ipv6_process(struct mlxsw_sp *mlxsw_sp, |
1183 | char *rauhtd_pl, | |
1184 | int rec_index) | |
1185 | { | |
1186 | struct net_device *dev; | |
1187 | struct neighbour *n; | |
1188 | struct in6_addr dip; | |
1189 | u16 rif; | |
1190 | ||
1191 | mlxsw_reg_rauhtd_ent_ipv6_unpack(rauhtd_pl, rec_index, &rif, | |
1192 | (char *) &dip); | |
1193 | ||
1194 | if (!mlxsw_sp->router->rifs[rif]) { | |
1195 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n"); | |
1196 | return; | |
1197 | } | |
1198 | ||
1199 | dev = mlxsw_sp->router->rifs[rif]->dev; | |
1200 | n = neigh_lookup(&nd_tbl, &dip, dev); | |
1201 | if (!n) { | |
1202 | netdev_err(dev, "Failed to find matching neighbour for IP=%pI6c\n", | |
1203 | &dip); | |
1204 | return; | |
1205 | } | |
1206 | ||
1207 | netdev_dbg(dev, "Updating neighbour with IP=%pI6c\n", &dip); | |
1208 | neigh_event_send(n, NULL); | |
1209 | neigh_release(n); | |
1210 | } | |
b5f3e0d4 IS |
1211 | #else |
1212 | static void mlxsw_sp_router_neigh_ent_ipv6_process(struct mlxsw_sp *mlxsw_sp, | |
1213 | char *rauhtd_pl, | |
1214 | int rec_index) | |
1215 | { | |
1216 | } | |
1217 | #endif | |
60f040ca | 1218 | |
c723c735 YG |
1219 | static void mlxsw_sp_router_neigh_rec_ipv4_process(struct mlxsw_sp *mlxsw_sp, |
1220 | char *rauhtd_pl, | |
1221 | int rec_index) | |
1222 | { | |
1223 | u8 num_entries; | |
1224 | int i; | |
1225 | ||
1226 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
1227 | rec_index); | |
1228 | /* Hardware starts counting at 0, so add 1. */ | |
1229 | num_entries++; | |
1230 | ||
1231 | /* Each record consists of several neighbour entries. */ | |
1232 | for (i = 0; i < num_entries; i++) { | |
1233 | int ent_index; | |
1234 | ||
1235 | ent_index = rec_index * MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC + i; | |
1236 | mlxsw_sp_router_neigh_ent_ipv4_process(mlxsw_sp, rauhtd_pl, | |
1237 | ent_index); | |
1238 | } | |
1239 | ||
1240 | } | |
1241 | ||
60f040ca AS |
1242 | static void mlxsw_sp_router_neigh_rec_ipv6_process(struct mlxsw_sp *mlxsw_sp, |
1243 | char *rauhtd_pl, | |
1244 | int rec_index) | |
1245 | { | |
1246 | /* One record contains one entry. */ | |
1247 | mlxsw_sp_router_neigh_ent_ipv6_process(mlxsw_sp, rauhtd_pl, | |
1248 | rec_index); | |
1249 | } | |
1250 | ||
c723c735 YG |
1251 | static void mlxsw_sp_router_neigh_rec_process(struct mlxsw_sp *mlxsw_sp, |
1252 | char *rauhtd_pl, int rec_index) | |
1253 | { | |
1254 | switch (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, rec_index)) { | |
1255 | case MLXSW_REG_RAUHTD_TYPE_IPV4: | |
1256 | mlxsw_sp_router_neigh_rec_ipv4_process(mlxsw_sp, rauhtd_pl, | |
1257 | rec_index); | |
1258 | break; | |
1259 | case MLXSW_REG_RAUHTD_TYPE_IPV6: | |
60f040ca AS |
1260 | mlxsw_sp_router_neigh_rec_ipv6_process(mlxsw_sp, rauhtd_pl, |
1261 | rec_index); | |
c723c735 YG |
1262 | break; |
1263 | } | |
1264 | } | |
1265 | ||
42cdb338 AS |
1266 | static bool mlxsw_sp_router_rauhtd_is_full(char *rauhtd_pl) |
1267 | { | |
1268 | u8 num_rec, last_rec_index, num_entries; | |
1269 | ||
1270 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
1271 | last_rec_index = num_rec - 1; | |
1272 | ||
1273 | if (num_rec < MLXSW_REG_RAUHTD_REC_MAX_NUM) | |
1274 | return false; | |
1275 | if (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, last_rec_index) == | |
1276 | MLXSW_REG_RAUHTD_TYPE_IPV6) | |
1277 | return true; | |
1278 | ||
1279 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
1280 | last_rec_index); | |
1281 | if (++num_entries == MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC) | |
1282 | return true; | |
1283 | return false; | |
1284 | } | |
1285 | ||
60f040ca AS |
1286 | static int |
1287 | __mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp, | |
1288 | char *rauhtd_pl, | |
1289 | enum mlxsw_reg_rauhtd_type type) | |
c723c735 | 1290 | { |
60f040ca AS |
1291 | int i, num_rec; |
1292 | int err; | |
c723c735 YG |
1293 | |
1294 | /* Make sure the neighbour's netdev isn't removed in the | |
1295 | * process. | |
1296 | */ | |
1297 | rtnl_lock(); | |
1298 | do { | |
60f040ca | 1299 | mlxsw_reg_rauhtd_pack(rauhtd_pl, type); |
c723c735 YG |
1300 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(rauhtd), |
1301 | rauhtd_pl); | |
1302 | if (err) { | |
1303 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to dump neighbour talbe\n"); | |
1304 | break; | |
1305 | } | |
1306 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
1307 | for (i = 0; i < num_rec; i++) | |
1308 | mlxsw_sp_router_neigh_rec_process(mlxsw_sp, rauhtd_pl, | |
1309 | i); | |
42cdb338 | 1310 | } while (mlxsw_sp_router_rauhtd_is_full(rauhtd_pl)); |
c723c735 YG |
1311 | rtnl_unlock(); |
1312 | ||
60f040ca AS |
1313 | return err; |
1314 | } | |
1315 | ||
1316 | static int mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp) | |
1317 | { | |
1318 | enum mlxsw_reg_rauhtd_type type; | |
1319 | char *rauhtd_pl; | |
1320 | int err; | |
1321 | ||
1322 | rauhtd_pl = kmalloc(MLXSW_REG_RAUHTD_LEN, GFP_KERNEL); | |
1323 | if (!rauhtd_pl) | |
1324 | return -ENOMEM; | |
1325 | ||
1326 | type = MLXSW_REG_RAUHTD_TYPE_IPV4; | |
1327 | err = __mlxsw_sp_router_neighs_update_rauhtd(mlxsw_sp, rauhtd_pl, type); | |
1328 | if (err) | |
1329 | goto out; | |
1330 | ||
1331 | type = MLXSW_REG_RAUHTD_TYPE_IPV6; | |
1332 | err = __mlxsw_sp_router_neighs_update_rauhtd(mlxsw_sp, rauhtd_pl, type); | |
1333 | out: | |
c723c735 | 1334 | kfree(rauhtd_pl); |
b2157149 YG |
1335 | return err; |
1336 | } | |
1337 | ||
1338 | static void mlxsw_sp_router_neighs_update_nh(struct mlxsw_sp *mlxsw_sp) | |
1339 | { | |
1340 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1341 | ||
1342 | /* Take RTNL mutex here to prevent lists from changes */ | |
1343 | rtnl_lock(); | |
9011b677 | 1344 | list_for_each_entry(neigh_entry, &mlxsw_sp->router->nexthop_neighs_list, |
8a0b7275 | 1345 | nexthop_neighs_list_node) |
b2157149 YG |
1346 | /* If this neigh have nexthops, make the kernel think this neigh |
1347 | * is active regardless of the traffic. | |
1348 | */ | |
8a0b7275 | 1349 | neigh_event_send(neigh_entry->key.n, NULL); |
b2157149 YG |
1350 | rtnl_unlock(); |
1351 | } | |
1352 | ||
1353 | static void | |
1354 | mlxsw_sp_router_neighs_update_work_schedule(struct mlxsw_sp *mlxsw_sp) | |
1355 | { | |
9011b677 | 1356 | unsigned long interval = mlxsw_sp->router->neighs_update.interval; |
b2157149 | 1357 | |
9011b677 | 1358 | mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, |
b2157149 YG |
1359 | msecs_to_jiffies(interval)); |
1360 | } | |
1361 | ||
1362 | static void mlxsw_sp_router_neighs_update_work(struct work_struct *work) | |
1363 | { | |
9011b677 | 1364 | struct mlxsw_sp_router *router; |
b2157149 YG |
1365 | int err; |
1366 | ||
9011b677 IS |
1367 | router = container_of(work, struct mlxsw_sp_router, |
1368 | neighs_update.dw.work); | |
1369 | err = mlxsw_sp_router_neighs_update_rauhtd(router->mlxsw_sp); | |
b2157149 | 1370 | if (err) |
9011b677 | 1371 | dev_err(router->mlxsw_sp->bus_info->dev, "Could not update kernel for neigh activity"); |
b2157149 | 1372 | |
9011b677 | 1373 | mlxsw_sp_router_neighs_update_nh(router->mlxsw_sp); |
b2157149 | 1374 | |
9011b677 | 1375 | mlxsw_sp_router_neighs_update_work_schedule(router->mlxsw_sp); |
c723c735 YG |
1376 | } |
1377 | ||
0b2361d9 YG |
1378 | static void mlxsw_sp_router_probe_unresolved_nexthops(struct work_struct *work) |
1379 | { | |
1380 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
9011b677 | 1381 | struct mlxsw_sp_router *router; |
0b2361d9 | 1382 | |
9011b677 IS |
1383 | router = container_of(work, struct mlxsw_sp_router, |
1384 | nexthop_probe_dw.work); | |
0b2361d9 YG |
1385 | /* Iterate over nexthop neighbours, find those who are unresolved and |
1386 | * send arp on them. This solves the chicken-egg problem when | |
1387 | * the nexthop wouldn't get offloaded until the neighbor is resolved | |
1388 | * but it wouldn't get resolved ever in case traffic is flowing in HW | |
1389 | * using different nexthop. | |
1390 | * | |
1391 | * Take RTNL mutex here to prevent lists from changes. | |
1392 | */ | |
1393 | rtnl_lock(); | |
9011b677 | 1394 | list_for_each_entry(neigh_entry, &router->nexthop_neighs_list, |
8a0b7275 | 1395 | nexthop_neighs_list_node) |
01b1aa35 | 1396 | if (!neigh_entry->connected) |
33b1341c | 1397 | neigh_event_send(neigh_entry->key.n, NULL); |
0b2361d9 YG |
1398 | rtnl_unlock(); |
1399 | ||
9011b677 | 1400 | mlxsw_core_schedule_dw(&router->nexthop_probe_dw, |
0b2361d9 YG |
1401 | MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL); |
1402 | } | |
1403 | ||
a7ff87ac JP |
1404 | static void |
1405 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
1406 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1407 | bool removing); | |
1408 | ||
5c8802f1 IS |
1409 | static enum mlxsw_reg_rauht_op mlxsw_sp_rauht_op(bool adding) |
1410 | { | |
1411 | return adding ? MLXSW_REG_RAUHT_OP_WRITE_ADD : | |
1412 | MLXSW_REG_RAUHT_OP_WRITE_DELETE; | |
1413 | } | |
1414 | ||
1415 | static void | |
1416 | mlxsw_sp_router_neigh_entry_op4(struct mlxsw_sp *mlxsw_sp, | |
1417 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1418 | enum mlxsw_reg_rauht_op op) | |
a6bf9e93 | 1419 | { |
33b1341c | 1420 | struct neighbour *n = neigh_entry->key.n; |
5c8802f1 | 1421 | u32 dip = ntohl(*((__be32 *) n->primary_key)); |
a6bf9e93 | 1422 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; |
5c8802f1 IS |
1423 | |
1424 | mlxsw_reg_rauht_pack4(rauht_pl, op, neigh_entry->rif, neigh_entry->ha, | |
1425 | dip); | |
7cfcbc75 AS |
1426 | if (neigh_entry->counter_valid) |
1427 | mlxsw_reg_rauht_pack_counter(rauht_pl, | |
1428 | neigh_entry->counter_index); | |
5c8802f1 IS |
1429 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); |
1430 | } | |
1431 | ||
d5eb89cf AS |
1432 | static void |
1433 | mlxsw_sp_router_neigh_entry_op6(struct mlxsw_sp *mlxsw_sp, | |
1434 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1435 | enum mlxsw_reg_rauht_op op) | |
1436 | { | |
1437 | struct neighbour *n = neigh_entry->key.n; | |
1438 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; | |
1439 | const char *dip = n->primary_key; | |
1440 | ||
1441 | mlxsw_reg_rauht_pack6(rauht_pl, op, neigh_entry->rif, neigh_entry->ha, | |
1442 | dip); | |
7cfcbc75 AS |
1443 | if (neigh_entry->counter_valid) |
1444 | mlxsw_reg_rauht_pack_counter(rauht_pl, | |
1445 | neigh_entry->counter_index); | |
d5eb89cf AS |
1446 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); |
1447 | } | |
1448 | ||
1d1056d8 | 1449 | bool mlxsw_sp_neigh_ipv6_ignore(struct mlxsw_sp_neigh_entry *neigh_entry) |
d5eb89cf | 1450 | { |
1d1056d8 AS |
1451 | struct neighbour *n = neigh_entry->key.n; |
1452 | ||
d5eb89cf AS |
1453 | /* Packets with a link-local destination address are trapped |
1454 | * after LPM lookup and never reach the neighbour table, so | |
1455 | * there is no need to program such neighbours to the device. | |
1456 | */ | |
1457 | if (ipv6_addr_type((struct in6_addr *) &n->primary_key) & | |
1458 | IPV6_ADDR_LINKLOCAL) | |
1459 | return true; | |
1460 | return false; | |
1461 | } | |
1462 | ||
5c8802f1 IS |
1463 | static void |
1464 | mlxsw_sp_neigh_entry_update(struct mlxsw_sp *mlxsw_sp, | |
1465 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1466 | bool adding) | |
1467 | { | |
1468 | if (!adding && !neigh_entry->connected) | |
1469 | return; | |
1470 | neigh_entry->connected = adding; | |
b5f3e0d4 | 1471 | if (neigh_entry->key.n->tbl->family == AF_INET) { |
5c8802f1 IS |
1472 | mlxsw_sp_router_neigh_entry_op4(mlxsw_sp, neigh_entry, |
1473 | mlxsw_sp_rauht_op(adding)); | |
b5f3e0d4 | 1474 | } else if (neigh_entry->key.n->tbl->family == AF_INET6) { |
1d1056d8 | 1475 | if (mlxsw_sp_neigh_ipv6_ignore(neigh_entry)) |
d5eb89cf AS |
1476 | return; |
1477 | mlxsw_sp_router_neigh_entry_op6(mlxsw_sp, neigh_entry, | |
1478 | mlxsw_sp_rauht_op(adding)); | |
1479 | } else { | |
5c8802f1 | 1480 | WARN_ON_ONCE(1); |
d5eb89cf | 1481 | } |
5c8802f1 IS |
1482 | } |
1483 | ||
a481d713 AS |
1484 | void |
1485 | mlxsw_sp_neigh_entry_counter_update(struct mlxsw_sp *mlxsw_sp, | |
1486 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1487 | bool adding) | |
1488 | { | |
1489 | if (adding) | |
1490 | mlxsw_sp_neigh_counter_alloc(mlxsw_sp, neigh_entry); | |
1491 | else | |
1492 | mlxsw_sp_neigh_counter_free(mlxsw_sp, neigh_entry); | |
1493 | mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, true); | |
1494 | } | |
1495 | ||
5c8802f1 IS |
1496 | struct mlxsw_sp_neigh_event_work { |
1497 | struct work_struct work; | |
1498 | struct mlxsw_sp *mlxsw_sp; | |
1499 | struct neighbour *n; | |
1500 | }; | |
1501 | ||
1502 | static void mlxsw_sp_router_neigh_event_work(struct work_struct *work) | |
1503 | { | |
1504 | struct mlxsw_sp_neigh_event_work *neigh_work = | |
1505 | container_of(work, struct mlxsw_sp_neigh_event_work, work); | |
1506 | struct mlxsw_sp *mlxsw_sp = neigh_work->mlxsw_sp; | |
1507 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1508 | struct neighbour *n = neigh_work->n; | |
1509 | unsigned char ha[ETH_ALEN]; | |
a6bf9e93 | 1510 | bool entry_connected; |
93a87e5e | 1511 | u8 nud_state, dead; |
a6bf9e93 | 1512 | |
5c8802f1 IS |
1513 | /* If these parameters are changed after we release the lock, |
1514 | * then we are guaranteed to receive another event letting us | |
1515 | * know about it. | |
1516 | */ | |
a6bf9e93 | 1517 | read_lock_bh(&n->lock); |
5c8802f1 | 1518 | memcpy(ha, n->ha, ETH_ALEN); |
a6bf9e93 | 1519 | nud_state = n->nud_state; |
93a87e5e | 1520 | dead = n->dead; |
a6bf9e93 YG |
1521 | read_unlock_bh(&n->lock); |
1522 | ||
5c8802f1 | 1523 | rtnl_lock(); |
93a87e5e | 1524 | entry_connected = nud_state & NUD_VALID && !dead; |
5c8802f1 IS |
1525 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); |
1526 | if (!entry_connected && !neigh_entry) | |
1527 | goto out; | |
1528 | if (!neigh_entry) { | |
1529 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); | |
1530 | if (IS_ERR(neigh_entry)) | |
1531 | goto out; | |
a6bf9e93 YG |
1532 | } |
1533 | ||
5c8802f1 IS |
1534 | memcpy(neigh_entry->ha, ha, ETH_ALEN); |
1535 | mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, entry_connected); | |
1536 | mlxsw_sp_nexthop_neigh_update(mlxsw_sp, neigh_entry, !entry_connected); | |
1537 | ||
1538 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) | |
1539 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1540 | ||
1541 | out: | |
1542 | rtnl_unlock(); | |
a6bf9e93 | 1543 | neigh_release(n); |
5c8802f1 | 1544 | kfree(neigh_work); |
a6bf9e93 YG |
1545 | } |
1546 | ||
e7322638 JP |
1547 | int mlxsw_sp_router_netevent_event(struct notifier_block *unused, |
1548 | unsigned long event, void *ptr) | |
c723c735 | 1549 | { |
5c8802f1 | 1550 | struct mlxsw_sp_neigh_event_work *neigh_work; |
c723c735 YG |
1551 | struct mlxsw_sp_port *mlxsw_sp_port; |
1552 | struct mlxsw_sp *mlxsw_sp; | |
1553 | unsigned long interval; | |
1554 | struct neigh_parms *p; | |
a6bf9e93 | 1555 | struct neighbour *n; |
c723c735 YG |
1556 | |
1557 | switch (event) { | |
1558 | case NETEVENT_DELAY_PROBE_TIME_UPDATE: | |
1559 | p = ptr; | |
1560 | ||
1561 | /* We don't care about changes in the default table. */ | |
b5f3e0d4 IS |
1562 | if (!p->dev || (p->tbl->family != AF_INET && |
1563 | p->tbl->family != AF_INET6)) | |
c723c735 YG |
1564 | return NOTIFY_DONE; |
1565 | ||
1566 | /* We are in atomic context and can't take RTNL mutex, | |
1567 | * so use RCU variant to walk the device chain. | |
1568 | */ | |
1569 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(p->dev); | |
1570 | if (!mlxsw_sp_port) | |
1571 | return NOTIFY_DONE; | |
1572 | ||
1573 | mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
1574 | interval = jiffies_to_msecs(NEIGH_VAR(p, DELAY_PROBE_TIME)); | |
9011b677 | 1575 | mlxsw_sp->router->neighs_update.interval = interval; |
c723c735 YG |
1576 | |
1577 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
1578 | break; | |
a6bf9e93 YG |
1579 | case NETEVENT_NEIGH_UPDATE: |
1580 | n = ptr; | |
a6bf9e93 | 1581 | |
b5f3e0d4 | 1582 | if (n->tbl->family != AF_INET && n->tbl->family != AF_INET6) |
a6bf9e93 YG |
1583 | return NOTIFY_DONE; |
1584 | ||
5c8802f1 | 1585 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(n->dev); |
a6bf9e93 YG |
1586 | if (!mlxsw_sp_port) |
1587 | return NOTIFY_DONE; | |
1588 | ||
5c8802f1 IS |
1589 | neigh_work = kzalloc(sizeof(*neigh_work), GFP_ATOMIC); |
1590 | if (!neigh_work) { | |
a6bf9e93 | 1591 | mlxsw_sp_port_dev_put(mlxsw_sp_port); |
5c8802f1 | 1592 | return NOTIFY_BAD; |
a6bf9e93 | 1593 | } |
5c8802f1 IS |
1594 | |
1595 | INIT_WORK(&neigh_work->work, mlxsw_sp_router_neigh_event_work); | |
1596 | neigh_work->mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
1597 | neigh_work->n = n; | |
a6bf9e93 YG |
1598 | |
1599 | /* Take a reference to ensure the neighbour won't be | |
1600 | * destructed until we drop the reference in delayed | |
1601 | * work. | |
1602 | */ | |
1603 | neigh_clone(n); | |
5c8802f1 IS |
1604 | mlxsw_core_schedule_work(&neigh_work->work); |
1605 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
a6bf9e93 | 1606 | break; |
c723c735 YG |
1607 | } |
1608 | ||
1609 | return NOTIFY_DONE; | |
1610 | } | |
1611 | ||
6cf3c971 JP |
1612 | static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp) |
1613 | { | |
c723c735 YG |
1614 | int err; |
1615 | ||
9011b677 | 1616 | err = rhashtable_init(&mlxsw_sp->router->neigh_ht, |
c723c735 YG |
1617 | &mlxsw_sp_neigh_ht_params); |
1618 | if (err) | |
1619 | return err; | |
1620 | ||
1621 | /* Initialize the polling interval according to the default | |
1622 | * table. | |
1623 | */ | |
1624 | mlxsw_sp_router_neighs_update_interval_init(mlxsw_sp); | |
1625 | ||
0b2361d9 | 1626 | /* Create the delayed works for the activity_update */ |
9011b677 | 1627 | INIT_DELAYED_WORK(&mlxsw_sp->router->neighs_update.dw, |
c723c735 | 1628 | mlxsw_sp_router_neighs_update_work); |
9011b677 | 1629 | INIT_DELAYED_WORK(&mlxsw_sp->router->nexthop_probe_dw, |
0b2361d9 | 1630 | mlxsw_sp_router_probe_unresolved_nexthops); |
9011b677 IS |
1631 | mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, 0); |
1632 | mlxsw_core_schedule_dw(&mlxsw_sp->router->nexthop_probe_dw, 0); | |
c723c735 | 1633 | return 0; |
6cf3c971 JP |
1634 | } |
1635 | ||
1636 | static void mlxsw_sp_neigh_fini(struct mlxsw_sp *mlxsw_sp) | |
1637 | { | |
9011b677 IS |
1638 | cancel_delayed_work_sync(&mlxsw_sp->router->neighs_update.dw); |
1639 | cancel_delayed_work_sync(&mlxsw_sp->router->nexthop_probe_dw); | |
1640 | rhashtable_destroy(&mlxsw_sp->router->neigh_ht); | |
6cf3c971 JP |
1641 | } |
1642 | ||
9665b745 | 1643 | static void mlxsw_sp_neigh_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, |
bf95233e | 1644 | struct mlxsw_sp_rif *rif) |
9665b745 IS |
1645 | { |
1646 | struct mlxsw_sp_neigh_entry *neigh_entry, *tmp; | |
1647 | ||
bf95233e | 1648 | list_for_each_entry_safe(neigh_entry, tmp, &rif->neigh_list, |
4a3c67a6 IS |
1649 | rif_list_node) { |
1650 | mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, false); | |
9665b745 | 1651 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); |
4a3c67a6 | 1652 | } |
9665b745 IS |
1653 | } |
1654 | ||
c53b8e1b IS |
1655 | struct mlxsw_sp_nexthop_key { |
1656 | struct fib_nh *fib_nh; | |
1657 | }; | |
1658 | ||
a7ff87ac JP |
1659 | struct mlxsw_sp_nexthop { |
1660 | struct list_head neigh_list_node; /* member of neigh entry list */ | |
9665b745 | 1661 | struct list_head rif_list_node; |
a7ff87ac JP |
1662 | struct mlxsw_sp_nexthop_group *nh_grp; /* pointer back to the group |
1663 | * this belongs to | |
1664 | */ | |
c53b8e1b IS |
1665 | struct rhash_head ht_node; |
1666 | struct mlxsw_sp_nexthop_key key; | |
58adf2c4 | 1667 | unsigned char gw_addr[sizeof(struct in6_addr)]; |
e6f3b379 | 1668 | int ifindex; |
bf95233e | 1669 | struct mlxsw_sp_rif *rif; |
a7ff87ac JP |
1670 | u8 should_offload:1, /* set indicates this neigh is connected and |
1671 | * should be put to KVD linear area of this group. | |
1672 | */ | |
1673 | offloaded:1, /* set in case the neigh is actually put into | |
1674 | * KVD linear area of this group. | |
1675 | */ | |
1676 | update:1; /* set indicates that MAC of this neigh should be | |
1677 | * updated in HW | |
1678 | */ | |
1679 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1680 | }; | |
1681 | ||
1682 | struct mlxsw_sp_nexthop_group { | |
ba31d366 | 1683 | void *priv; |
e9ad5e7d | 1684 | struct rhash_head ht_node; |
a7ff87ac | 1685 | struct list_head fib_list; /* list of fib entries that use this group */ |
58adf2c4 | 1686 | struct neigh_table *neigh_tbl; |
b3e8d1eb IS |
1687 | u8 adj_index_valid:1, |
1688 | gateway:1; /* routes using the group use a gateway */ | |
a7ff87ac JP |
1689 | u32 adj_index; |
1690 | u16 ecmp_size; | |
1691 | u16 count; | |
1692 | struct mlxsw_sp_nexthop nexthops[0]; | |
bf95233e | 1693 | #define nh_rif nexthops[0].rif |
a7ff87ac JP |
1694 | }; |
1695 | ||
ba31d366 AS |
1696 | static struct fib_info * |
1697 | mlxsw_sp_nexthop4_group_fi(const struct mlxsw_sp_nexthop_group *nh_grp) | |
1698 | { | |
1699 | return nh_grp->priv; | |
1700 | } | |
1701 | ||
1702 | struct mlxsw_sp_nexthop_group_cmp_arg { | |
e6f3b379 AS |
1703 | enum mlxsw_sp_l3proto proto; |
1704 | union { | |
1705 | struct fib_info *fi; | |
1706 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
1707 | }; | |
ba31d366 AS |
1708 | }; |
1709 | ||
e6f3b379 AS |
1710 | static bool |
1711 | mlxsw_sp_nexthop6_group_has_nexthop(const struct mlxsw_sp_nexthop_group *nh_grp, | |
1712 | const struct in6_addr *gw, int ifindex) | |
1713 | { | |
1714 | int i; | |
1715 | ||
1716 | for (i = 0; i < nh_grp->count; i++) { | |
1717 | const struct mlxsw_sp_nexthop *nh; | |
1718 | ||
1719 | nh = &nh_grp->nexthops[i]; | |
1720 | if (nh->ifindex == ifindex && | |
1721 | ipv6_addr_equal(gw, (struct in6_addr *) nh->gw_addr)) | |
1722 | return true; | |
1723 | } | |
1724 | ||
1725 | return false; | |
1726 | } | |
1727 | ||
1728 | static bool | |
1729 | mlxsw_sp_nexthop6_group_cmp(const struct mlxsw_sp_nexthop_group *nh_grp, | |
1730 | const struct mlxsw_sp_fib6_entry *fib6_entry) | |
1731 | { | |
1732 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
1733 | ||
1734 | if (nh_grp->count != fib6_entry->nrt6) | |
1735 | return false; | |
1736 | ||
1737 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
1738 | struct in6_addr *gw; | |
1739 | int ifindex; | |
1740 | ||
1741 | ifindex = mlxsw_sp_rt6->rt->dst.dev->ifindex; | |
1742 | gw = &mlxsw_sp_rt6->rt->rt6i_gateway; | |
1743 | if (!mlxsw_sp_nexthop6_group_has_nexthop(nh_grp, gw, ifindex)) | |
1744 | return false; | |
1745 | } | |
1746 | ||
1747 | return true; | |
1748 | } | |
1749 | ||
ba31d366 AS |
1750 | static int |
1751 | mlxsw_sp_nexthop_group_cmp(struct rhashtable_compare_arg *arg, const void *ptr) | |
1752 | { | |
1753 | const struct mlxsw_sp_nexthop_group_cmp_arg *cmp_arg = arg->key; | |
1754 | const struct mlxsw_sp_nexthop_group *nh_grp = ptr; | |
1755 | ||
e6f3b379 AS |
1756 | switch (cmp_arg->proto) { |
1757 | case MLXSW_SP_L3_PROTO_IPV4: | |
1758 | return cmp_arg->fi != mlxsw_sp_nexthop4_group_fi(nh_grp); | |
1759 | case MLXSW_SP_L3_PROTO_IPV6: | |
1760 | return !mlxsw_sp_nexthop6_group_cmp(nh_grp, | |
1761 | cmp_arg->fib6_entry); | |
1762 | default: | |
1763 | WARN_ON(1); | |
1764 | return 1; | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | static int | |
1769 | mlxsw_sp_nexthop_group_type(const struct mlxsw_sp_nexthop_group *nh_grp) | |
1770 | { | |
1771 | return nh_grp->neigh_tbl->family; | |
ba31d366 AS |
1772 | } |
1773 | ||
1774 | static u32 mlxsw_sp_nexthop_group_hash_obj(const void *data, u32 len, u32 seed) | |
1775 | { | |
1776 | const struct mlxsw_sp_nexthop_group *nh_grp = data; | |
e6f3b379 AS |
1777 | const struct mlxsw_sp_nexthop *nh; |
1778 | struct fib_info *fi; | |
1779 | unsigned int val; | |
1780 | int i; | |
ba31d366 | 1781 | |
e6f3b379 AS |
1782 | switch (mlxsw_sp_nexthop_group_type(nh_grp)) { |
1783 | case AF_INET: | |
1784 | fi = mlxsw_sp_nexthop4_group_fi(nh_grp); | |
1785 | return jhash(&fi, sizeof(fi), seed); | |
1786 | case AF_INET6: | |
1787 | val = nh_grp->count; | |
1788 | for (i = 0; i < nh_grp->count; i++) { | |
1789 | nh = &nh_grp->nexthops[i]; | |
1790 | val ^= nh->ifindex; | |
1791 | } | |
1792 | return jhash(&val, sizeof(val), seed); | |
1793 | default: | |
1794 | WARN_ON(1); | |
1795 | return 0; | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | static u32 | |
1800 | mlxsw_sp_nexthop6_group_hash(struct mlxsw_sp_fib6_entry *fib6_entry, u32 seed) | |
1801 | { | |
1802 | unsigned int val = fib6_entry->nrt6; | |
1803 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
1804 | struct net_device *dev; | |
1805 | ||
1806 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
1807 | dev = mlxsw_sp_rt6->rt->dst.dev; | |
1808 | val ^= dev->ifindex; | |
1809 | } | |
1810 | ||
1811 | return jhash(&val, sizeof(val), seed); | |
ba31d366 AS |
1812 | } |
1813 | ||
1814 | static u32 | |
1815 | mlxsw_sp_nexthop_group_hash(const void *data, u32 len, u32 seed) | |
1816 | { | |
1817 | const struct mlxsw_sp_nexthop_group_cmp_arg *cmp_arg = data; | |
1818 | ||
e6f3b379 AS |
1819 | switch (cmp_arg->proto) { |
1820 | case MLXSW_SP_L3_PROTO_IPV4: | |
1821 | return jhash(&cmp_arg->fi, sizeof(cmp_arg->fi), seed); | |
1822 | case MLXSW_SP_L3_PROTO_IPV6: | |
1823 | return mlxsw_sp_nexthop6_group_hash(cmp_arg->fib6_entry, seed); | |
1824 | default: | |
1825 | WARN_ON(1); | |
1826 | return 0; | |
1827 | } | |
ba31d366 AS |
1828 | } |
1829 | ||
e9ad5e7d | 1830 | static const struct rhashtable_params mlxsw_sp_nexthop_group_ht_params = { |
e9ad5e7d | 1831 | .head_offset = offsetof(struct mlxsw_sp_nexthop_group, ht_node), |
ba31d366 AS |
1832 | .hashfn = mlxsw_sp_nexthop_group_hash, |
1833 | .obj_hashfn = mlxsw_sp_nexthop_group_hash_obj, | |
1834 | .obj_cmpfn = mlxsw_sp_nexthop_group_cmp, | |
e9ad5e7d IS |
1835 | }; |
1836 | ||
1837 | static int mlxsw_sp_nexthop_group_insert(struct mlxsw_sp *mlxsw_sp, | |
1838 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1839 | { | |
e6f3b379 AS |
1840 | if (mlxsw_sp_nexthop_group_type(nh_grp) == AF_INET6 && |
1841 | !nh_grp->gateway) | |
1842 | return 0; | |
1843 | ||
9011b677 | 1844 | return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
1845 | &nh_grp->ht_node, |
1846 | mlxsw_sp_nexthop_group_ht_params); | |
1847 | } | |
1848 | ||
1849 | static void mlxsw_sp_nexthop_group_remove(struct mlxsw_sp *mlxsw_sp, | |
1850 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1851 | { | |
e6f3b379 AS |
1852 | if (mlxsw_sp_nexthop_group_type(nh_grp) == AF_INET6 && |
1853 | !nh_grp->gateway) | |
1854 | return; | |
1855 | ||
9011b677 | 1856 | rhashtable_remove_fast(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
1857 | &nh_grp->ht_node, |
1858 | mlxsw_sp_nexthop_group_ht_params); | |
1859 | } | |
1860 | ||
1861 | static struct mlxsw_sp_nexthop_group * | |
ba31d366 AS |
1862 | mlxsw_sp_nexthop4_group_lookup(struct mlxsw_sp *mlxsw_sp, |
1863 | struct fib_info *fi) | |
e9ad5e7d | 1864 | { |
ba31d366 AS |
1865 | struct mlxsw_sp_nexthop_group_cmp_arg cmp_arg; |
1866 | ||
e6f3b379 | 1867 | cmp_arg.proto = MLXSW_SP_L3_PROTO_IPV4; |
ba31d366 AS |
1868 | cmp_arg.fi = fi; |
1869 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, | |
1870 | &cmp_arg, | |
e9ad5e7d IS |
1871 | mlxsw_sp_nexthop_group_ht_params); |
1872 | } | |
1873 | ||
e6f3b379 AS |
1874 | static struct mlxsw_sp_nexthop_group * |
1875 | mlxsw_sp_nexthop6_group_lookup(struct mlxsw_sp *mlxsw_sp, | |
1876 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
1877 | { | |
1878 | struct mlxsw_sp_nexthop_group_cmp_arg cmp_arg; | |
1879 | ||
1880 | cmp_arg.proto = MLXSW_SP_L3_PROTO_IPV6; | |
1881 | cmp_arg.fib6_entry = fib6_entry; | |
1882 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, | |
1883 | &cmp_arg, | |
1884 | mlxsw_sp_nexthop_group_ht_params); | |
1885 | } | |
1886 | ||
c53b8e1b IS |
1887 | static const struct rhashtable_params mlxsw_sp_nexthop_ht_params = { |
1888 | .key_offset = offsetof(struct mlxsw_sp_nexthop, key), | |
1889 | .head_offset = offsetof(struct mlxsw_sp_nexthop, ht_node), | |
1890 | .key_len = sizeof(struct mlxsw_sp_nexthop_key), | |
1891 | }; | |
1892 | ||
1893 | static int mlxsw_sp_nexthop_insert(struct mlxsw_sp *mlxsw_sp, | |
1894 | struct mlxsw_sp_nexthop *nh) | |
1895 | { | |
9011b677 | 1896 | return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_ht, |
c53b8e1b IS |
1897 | &nh->ht_node, mlxsw_sp_nexthop_ht_params); |
1898 | } | |
1899 | ||
1900 | static void mlxsw_sp_nexthop_remove(struct mlxsw_sp *mlxsw_sp, | |
1901 | struct mlxsw_sp_nexthop *nh) | |
1902 | { | |
9011b677 | 1903 | rhashtable_remove_fast(&mlxsw_sp->router->nexthop_ht, &nh->ht_node, |
c53b8e1b IS |
1904 | mlxsw_sp_nexthop_ht_params); |
1905 | } | |
1906 | ||
ad178c8e IS |
1907 | static struct mlxsw_sp_nexthop * |
1908 | mlxsw_sp_nexthop_lookup(struct mlxsw_sp *mlxsw_sp, | |
1909 | struct mlxsw_sp_nexthop_key key) | |
1910 | { | |
9011b677 | 1911 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_ht, &key, |
ad178c8e IS |
1912 | mlxsw_sp_nexthop_ht_params); |
1913 | } | |
1914 | ||
a7ff87ac | 1915 | static int mlxsw_sp_adj_index_mass_update_vr(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 1916 | const struct mlxsw_sp_fib *fib, |
a7ff87ac JP |
1917 | u32 adj_index, u16 ecmp_size, |
1918 | u32 new_adj_index, | |
1919 | u16 new_ecmp_size) | |
1920 | { | |
1921 | char raleu_pl[MLXSW_REG_RALEU_LEN]; | |
1922 | ||
1a9234e6 | 1923 | mlxsw_reg_raleu_pack(raleu_pl, |
76610ebb IS |
1924 | (enum mlxsw_reg_ralxx_protocol) fib->proto, |
1925 | fib->vr->id, adj_index, ecmp_size, new_adj_index, | |
1a9234e6 | 1926 | new_ecmp_size); |
a7ff87ac JP |
1927 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raleu), raleu_pl); |
1928 | } | |
1929 | ||
1930 | static int mlxsw_sp_adj_index_mass_update(struct mlxsw_sp *mlxsw_sp, | |
1931 | struct mlxsw_sp_nexthop_group *nh_grp, | |
1932 | u32 old_adj_index, u16 old_ecmp_size) | |
1933 | { | |
1934 | struct mlxsw_sp_fib_entry *fib_entry; | |
76610ebb | 1935 | struct mlxsw_sp_fib *fib = NULL; |
a7ff87ac JP |
1936 | int err; |
1937 | ||
1938 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
76610ebb | 1939 | if (fib == fib_entry->fib_node->fib) |
a7ff87ac | 1940 | continue; |
76610ebb IS |
1941 | fib = fib_entry->fib_node->fib; |
1942 | err = mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, fib, | |
a7ff87ac JP |
1943 | old_adj_index, |
1944 | old_ecmp_size, | |
1945 | nh_grp->adj_index, | |
1946 | nh_grp->ecmp_size); | |
1947 | if (err) | |
1948 | return err; | |
1949 | } | |
1950 | return 0; | |
1951 | } | |
1952 | ||
1953 | static int mlxsw_sp_nexthop_mac_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, | |
1954 | struct mlxsw_sp_nexthop *nh) | |
1955 | { | |
1956 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
1957 | char ratr_pl[MLXSW_REG_RATR_LEN]; | |
1958 | ||
1959 | mlxsw_reg_ratr_pack(ratr_pl, MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY, | |
89e41982 PM |
1960 | true, MLXSW_REG_RATR_TYPE_ETHERNET, |
1961 | adj_index, neigh_entry->rif); | |
a7ff87ac JP |
1962 | mlxsw_reg_ratr_eth_entry_pack(ratr_pl, neigh_entry->ha); |
1963 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl); | |
1964 | } | |
1965 | ||
1966 | static int | |
1967 | mlxsw_sp_nexthop_group_mac_update(struct mlxsw_sp *mlxsw_sp, | |
a59b7e02 IS |
1968 | struct mlxsw_sp_nexthop_group *nh_grp, |
1969 | bool reallocate) | |
a7ff87ac JP |
1970 | { |
1971 | u32 adj_index = nh_grp->adj_index; /* base */ | |
1972 | struct mlxsw_sp_nexthop *nh; | |
1973 | int i; | |
1974 | int err; | |
1975 | ||
1976 | for (i = 0; i < nh_grp->count; i++) { | |
1977 | nh = &nh_grp->nexthops[i]; | |
1978 | ||
1979 | if (!nh->should_offload) { | |
1980 | nh->offloaded = 0; | |
1981 | continue; | |
1982 | } | |
1983 | ||
a59b7e02 | 1984 | if (nh->update || reallocate) { |
a7ff87ac JP |
1985 | err = mlxsw_sp_nexthop_mac_update(mlxsw_sp, |
1986 | adj_index, nh); | |
1987 | if (err) | |
1988 | return err; | |
1989 | nh->update = 0; | |
1990 | nh->offloaded = 1; | |
1991 | } | |
1992 | adj_index++; | |
1993 | } | |
1994 | return 0; | |
1995 | } | |
1996 | ||
1997 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
1998 | struct mlxsw_sp_fib_entry *fib_entry); | |
1999 | ||
1819ae3d IS |
2000 | static bool |
2001 | mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node, | |
2002 | const struct mlxsw_sp_fib_entry *fib_entry); | |
2003 | ||
a7ff87ac JP |
2004 | static int |
2005 | mlxsw_sp_nexthop_fib_entries_update(struct mlxsw_sp *mlxsw_sp, | |
2006 | struct mlxsw_sp_nexthop_group *nh_grp) | |
2007 | { | |
2008 | struct mlxsw_sp_fib_entry *fib_entry; | |
2009 | int err; | |
2010 | ||
2011 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
1819ae3d IS |
2012 | if (!mlxsw_sp_fib_node_entry_is_first(fib_entry->fib_node, |
2013 | fib_entry)) | |
2014 | continue; | |
a7ff87ac JP |
2015 | err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); |
2016 | if (err) | |
2017 | return err; | |
2018 | } | |
2019 | return 0; | |
2020 | } | |
2021 | ||
77d964e6 IS |
2022 | static void |
2023 | mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry, | |
2024 | enum mlxsw_reg_ralue_op op, int err); | |
2025 | ||
2026 | static void | |
2027 | mlxsw_sp_nexthop_fib_entries_refresh(struct mlxsw_sp_nexthop_group *nh_grp) | |
2028 | { | |
2029 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_WRITE; | |
2030 | struct mlxsw_sp_fib_entry *fib_entry; | |
2031 | ||
2032 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
2033 | if (!mlxsw_sp_fib_node_entry_is_first(fib_entry->fib_node, | |
2034 | fib_entry)) | |
2035 | continue; | |
2036 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0); | |
2037 | } | |
2038 | } | |
2039 | ||
a7ff87ac JP |
2040 | static void |
2041 | mlxsw_sp_nexthop_group_refresh(struct mlxsw_sp *mlxsw_sp, | |
2042 | struct mlxsw_sp_nexthop_group *nh_grp) | |
2043 | { | |
2044 | struct mlxsw_sp_nexthop *nh; | |
2045 | bool offload_change = false; | |
2046 | u32 adj_index; | |
2047 | u16 ecmp_size = 0; | |
2048 | bool old_adj_index_valid; | |
2049 | u32 old_adj_index; | |
2050 | u16 old_ecmp_size; | |
a7ff87ac JP |
2051 | int i; |
2052 | int err; | |
2053 | ||
b3e8d1eb IS |
2054 | if (!nh_grp->gateway) { |
2055 | mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
2056 | return; | |
2057 | } | |
2058 | ||
a7ff87ac JP |
2059 | for (i = 0; i < nh_grp->count; i++) { |
2060 | nh = &nh_grp->nexthops[i]; | |
2061 | ||
56b8a9ed | 2062 | if (nh->should_offload != nh->offloaded) { |
a7ff87ac JP |
2063 | offload_change = true; |
2064 | if (nh->should_offload) | |
2065 | nh->update = 1; | |
2066 | } | |
2067 | if (nh->should_offload) | |
2068 | ecmp_size++; | |
2069 | } | |
2070 | if (!offload_change) { | |
2071 | /* Nothing was added or removed, so no need to reallocate. Just | |
2072 | * update MAC on existing adjacency indexes. | |
2073 | */ | |
a59b7e02 IS |
2074 | err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, |
2075 | false); | |
a7ff87ac JP |
2076 | if (err) { |
2077 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
2078 | goto set_trap; | |
2079 | } | |
2080 | return; | |
2081 | } | |
2082 | if (!ecmp_size) | |
2083 | /* No neigh of this group is connected so we just set | |
2084 | * the trap and let everthing flow through kernel. | |
2085 | */ | |
2086 | goto set_trap; | |
2087 | ||
13124443 AS |
2088 | err = mlxsw_sp_kvdl_alloc(mlxsw_sp, ecmp_size, &adj_index); |
2089 | if (err) { | |
a7ff87ac JP |
2090 | /* We ran out of KVD linear space, just set the |
2091 | * trap and let everything flow through kernel. | |
2092 | */ | |
2093 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to allocate KVD linear area for nexthop group.\n"); | |
2094 | goto set_trap; | |
2095 | } | |
a7ff87ac JP |
2096 | old_adj_index_valid = nh_grp->adj_index_valid; |
2097 | old_adj_index = nh_grp->adj_index; | |
2098 | old_ecmp_size = nh_grp->ecmp_size; | |
2099 | nh_grp->adj_index_valid = 1; | |
2100 | nh_grp->adj_index = adj_index; | |
2101 | nh_grp->ecmp_size = ecmp_size; | |
a59b7e02 | 2102 | err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, true); |
a7ff87ac JP |
2103 | if (err) { |
2104 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
2105 | goto set_trap; | |
2106 | } | |
2107 | ||
2108 | if (!old_adj_index_valid) { | |
2109 | /* The trap was set for fib entries, so we have to call | |
2110 | * fib entry update to unset it and use adjacency index. | |
2111 | */ | |
2112 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
2113 | if (err) { | |
2114 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to add adjacency index to fib entries.\n"); | |
2115 | goto set_trap; | |
2116 | } | |
2117 | return; | |
2118 | } | |
2119 | ||
2120 | err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, nh_grp, | |
2121 | old_adj_index, old_ecmp_size); | |
2122 | mlxsw_sp_kvdl_free(mlxsw_sp, old_adj_index); | |
2123 | if (err) { | |
2124 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to mass-update adjacency index for nexthop group.\n"); | |
2125 | goto set_trap; | |
2126 | } | |
77d964e6 IS |
2127 | |
2128 | /* Offload state within the group changed, so update the flags. */ | |
2129 | mlxsw_sp_nexthop_fib_entries_refresh(nh_grp); | |
2130 | ||
a7ff87ac JP |
2131 | return; |
2132 | ||
2133 | set_trap: | |
2134 | old_adj_index_valid = nh_grp->adj_index_valid; | |
2135 | nh_grp->adj_index_valid = 0; | |
2136 | for (i = 0; i < nh_grp->count; i++) { | |
2137 | nh = &nh_grp->nexthops[i]; | |
2138 | nh->offloaded = 0; | |
2139 | } | |
2140 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
2141 | if (err) | |
2142 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set traps for fib entries.\n"); | |
2143 | if (old_adj_index_valid) | |
2144 | mlxsw_sp_kvdl_free(mlxsw_sp, nh_grp->adj_index); | |
2145 | } | |
2146 | ||
2147 | static void __mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp_nexthop *nh, | |
2148 | bool removing) | |
2149 | { | |
213666a3 | 2150 | if (!removing) |
a7ff87ac | 2151 | nh->should_offload = 1; |
213666a3 | 2152 | else if (nh->offloaded) |
a7ff87ac JP |
2153 | nh->should_offload = 0; |
2154 | nh->update = 1; | |
2155 | } | |
2156 | ||
2157 | static void | |
2158 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
2159 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
2160 | bool removing) | |
2161 | { | |
2162 | struct mlxsw_sp_nexthop *nh; | |
2163 | ||
a7ff87ac JP |
2164 | list_for_each_entry(nh, &neigh_entry->nexthop_list, |
2165 | neigh_list_node) { | |
2166 | __mlxsw_sp_nexthop_neigh_update(nh, removing); | |
2167 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
2168 | } | |
a7ff87ac JP |
2169 | } |
2170 | ||
9665b745 | 2171 | static void mlxsw_sp_nexthop_rif_init(struct mlxsw_sp_nexthop *nh, |
bf95233e | 2172 | struct mlxsw_sp_rif *rif) |
9665b745 | 2173 | { |
bf95233e | 2174 | if (nh->rif) |
9665b745 IS |
2175 | return; |
2176 | ||
bf95233e AS |
2177 | nh->rif = rif; |
2178 | list_add(&nh->rif_list_node, &rif->nexthop_list); | |
9665b745 IS |
2179 | } |
2180 | ||
2181 | static void mlxsw_sp_nexthop_rif_fini(struct mlxsw_sp_nexthop *nh) | |
2182 | { | |
bf95233e | 2183 | if (!nh->rif) |
9665b745 IS |
2184 | return; |
2185 | ||
2186 | list_del(&nh->rif_list_node); | |
bf95233e | 2187 | nh->rif = NULL; |
9665b745 IS |
2188 | } |
2189 | ||
a8c97014 IS |
2190 | static int mlxsw_sp_nexthop_neigh_init(struct mlxsw_sp *mlxsw_sp, |
2191 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
2192 | { |
2193 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
a7ff87ac | 2194 | struct neighbour *n; |
93a87e5e | 2195 | u8 nud_state, dead; |
c53b8e1b IS |
2196 | int err; |
2197 | ||
ad178c8e | 2198 | if (!nh->nh_grp->gateway || nh->neigh_entry) |
b8399a1e IS |
2199 | return 0; |
2200 | ||
33b1341c | 2201 | /* Take a reference of neigh here ensuring that neigh would |
8de3c178 | 2202 | * not be destructed before the nexthop entry is finished. |
33b1341c | 2203 | * The reference is taken either in neigh_lookup() or |
fd76d910 | 2204 | * in neigh_create() in case n is not found. |
33b1341c | 2205 | */ |
58adf2c4 | 2206 | n = neigh_lookup(nh->nh_grp->neigh_tbl, &nh->gw_addr, nh->rif->dev); |
33b1341c | 2207 | if (!n) { |
58adf2c4 IS |
2208 | n = neigh_create(nh->nh_grp->neigh_tbl, &nh->gw_addr, |
2209 | nh->rif->dev); | |
a8c97014 IS |
2210 | if (IS_ERR(n)) |
2211 | return PTR_ERR(n); | |
a7ff87ac | 2212 | neigh_event_send(n, NULL); |
33b1341c JP |
2213 | } |
2214 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); | |
2215 | if (!neigh_entry) { | |
5c8802f1 IS |
2216 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); |
2217 | if (IS_ERR(neigh_entry)) { | |
c53b8e1b IS |
2218 | err = -EINVAL; |
2219 | goto err_neigh_entry_create; | |
5c8802f1 | 2220 | } |
a7ff87ac | 2221 | } |
b2157149 YG |
2222 | |
2223 | /* If that is the first nexthop connected to that neigh, add to | |
2224 | * nexthop_neighs_list | |
2225 | */ | |
2226 | if (list_empty(&neigh_entry->nexthop_list)) | |
2227 | list_add_tail(&neigh_entry->nexthop_neighs_list_node, | |
9011b677 | 2228 | &mlxsw_sp->router->nexthop_neighs_list); |
b2157149 | 2229 | |
a7ff87ac JP |
2230 | nh->neigh_entry = neigh_entry; |
2231 | list_add_tail(&nh->neigh_list_node, &neigh_entry->nexthop_list); | |
2232 | read_lock_bh(&n->lock); | |
2233 | nud_state = n->nud_state; | |
93a87e5e | 2234 | dead = n->dead; |
a7ff87ac | 2235 | read_unlock_bh(&n->lock); |
93a87e5e | 2236 | __mlxsw_sp_nexthop_neigh_update(nh, !(nud_state & NUD_VALID && !dead)); |
a7ff87ac JP |
2237 | |
2238 | return 0; | |
c53b8e1b IS |
2239 | |
2240 | err_neigh_entry_create: | |
2241 | neigh_release(n); | |
c53b8e1b | 2242 | return err; |
a7ff87ac JP |
2243 | } |
2244 | ||
a8c97014 IS |
2245 | static void mlxsw_sp_nexthop_neigh_fini(struct mlxsw_sp *mlxsw_sp, |
2246 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
2247 | { |
2248 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
a8c97014 | 2249 | struct neighbour *n; |
a7ff87ac | 2250 | |
b8399a1e | 2251 | if (!neigh_entry) |
a8c97014 IS |
2252 | return; |
2253 | n = neigh_entry->key.n; | |
b8399a1e | 2254 | |
58312125 | 2255 | __mlxsw_sp_nexthop_neigh_update(nh, true); |
a7ff87ac | 2256 | list_del(&nh->neigh_list_node); |
e58be79e | 2257 | nh->neigh_entry = NULL; |
b2157149 YG |
2258 | |
2259 | /* If that is the last nexthop connected to that neigh, remove from | |
2260 | * nexthop_neighs_list | |
2261 | */ | |
e58be79e IS |
2262 | if (list_empty(&neigh_entry->nexthop_list)) |
2263 | list_del(&neigh_entry->nexthop_neighs_list_node); | |
b2157149 | 2264 | |
5c8802f1 IS |
2265 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) |
2266 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
2267 | ||
2268 | neigh_release(n); | |
a8c97014 | 2269 | } |
c53b8e1b | 2270 | |
6ddb7426 PM |
2271 | static bool mlxsw_sp_netdev_ipip_type(const struct mlxsw_sp *mlxsw_sp, |
2272 | const struct net_device *dev, | |
2273 | enum mlxsw_sp_ipip_type *p_type) | |
2274 | { | |
2275 | struct mlxsw_sp_router *router = mlxsw_sp->router; | |
2276 | const struct mlxsw_sp_ipip_ops *ipip_ops; | |
2277 | enum mlxsw_sp_ipip_type ipipt; | |
2278 | ||
2279 | for (ipipt = 0; ipipt < MLXSW_SP_IPIP_TYPE_MAX; ++ipipt) { | |
2280 | ipip_ops = router->ipip_ops_arr[ipipt]; | |
2281 | if (dev->type == ipip_ops->dev_type) { | |
2282 | if (p_type) | |
2283 | *p_type = ipipt; | |
2284 | return true; | |
2285 | } | |
2286 | } | |
2287 | return false; | |
2288 | } | |
2289 | ||
0e6ea2a4 IS |
2290 | static int mlxsw_sp_nexthop4_init(struct mlxsw_sp *mlxsw_sp, |
2291 | struct mlxsw_sp_nexthop_group *nh_grp, | |
2292 | struct mlxsw_sp_nexthop *nh, | |
2293 | struct fib_nh *fib_nh) | |
a8c97014 IS |
2294 | { |
2295 | struct net_device *dev = fib_nh->nh_dev; | |
df6dd79b | 2296 | struct in_device *in_dev; |
bf95233e | 2297 | struct mlxsw_sp_rif *rif; |
a8c97014 IS |
2298 | int err; |
2299 | ||
2300 | nh->nh_grp = nh_grp; | |
2301 | nh->key.fib_nh = fib_nh; | |
58adf2c4 | 2302 | memcpy(&nh->gw_addr, &fib_nh->nh_gw, sizeof(fib_nh->nh_gw)); |
a8c97014 IS |
2303 | err = mlxsw_sp_nexthop_insert(mlxsw_sp, nh); |
2304 | if (err) | |
2305 | return err; | |
2306 | ||
97989ee0 IS |
2307 | if (!dev) |
2308 | return 0; | |
2309 | ||
df6dd79b IS |
2310 | in_dev = __in_dev_get_rtnl(dev); |
2311 | if (in_dev && IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) && | |
2312 | fib_nh->nh_flags & RTNH_F_LINKDOWN) | |
2313 | return 0; | |
2314 | ||
bf95233e AS |
2315 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
2316 | if (!rif) | |
a8c97014 | 2317 | return 0; |
bf95233e | 2318 | mlxsw_sp_nexthop_rif_init(nh, rif); |
a8c97014 IS |
2319 | |
2320 | err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); | |
2321 | if (err) | |
2322 | goto err_nexthop_neigh_init; | |
2323 | ||
2324 | return 0; | |
2325 | ||
2326 | err_nexthop_neigh_init: | |
a4e75b76 | 2327 | mlxsw_sp_nexthop_rif_fini(nh); |
a8c97014 IS |
2328 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); |
2329 | return err; | |
2330 | } | |
2331 | ||
0e6ea2a4 IS |
2332 | static void mlxsw_sp_nexthop4_fini(struct mlxsw_sp *mlxsw_sp, |
2333 | struct mlxsw_sp_nexthop *nh) | |
a8c97014 IS |
2334 | { |
2335 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
9665b745 | 2336 | mlxsw_sp_nexthop_rif_fini(nh); |
c53b8e1b | 2337 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); |
a7ff87ac JP |
2338 | } |
2339 | ||
0e6ea2a4 IS |
2340 | static void mlxsw_sp_nexthop4_event(struct mlxsw_sp *mlxsw_sp, |
2341 | unsigned long event, struct fib_nh *fib_nh) | |
ad178c8e IS |
2342 | { |
2343 | struct mlxsw_sp_nexthop_key key; | |
2344 | struct mlxsw_sp_nexthop *nh; | |
bf95233e | 2345 | struct mlxsw_sp_rif *rif; |
ad178c8e | 2346 | |
9011b677 | 2347 | if (mlxsw_sp->router->aborted) |
ad178c8e IS |
2348 | return; |
2349 | ||
2350 | key.fib_nh = fib_nh; | |
2351 | nh = mlxsw_sp_nexthop_lookup(mlxsw_sp, key); | |
2352 | if (WARN_ON_ONCE(!nh)) | |
2353 | return; | |
2354 | ||
bf95233e AS |
2355 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, fib_nh->nh_dev); |
2356 | if (!rif) | |
ad178c8e IS |
2357 | return; |
2358 | ||
2359 | switch (event) { | |
2360 | case FIB_EVENT_NH_ADD: | |
bf95233e | 2361 | mlxsw_sp_nexthop_rif_init(nh, rif); |
ad178c8e IS |
2362 | mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); |
2363 | break; | |
2364 | case FIB_EVENT_NH_DEL: | |
2365 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
9665b745 | 2366 | mlxsw_sp_nexthop_rif_fini(nh); |
ad178c8e IS |
2367 | break; |
2368 | } | |
2369 | ||
2370 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
2371 | } | |
2372 | ||
9665b745 | 2373 | static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, |
bf95233e | 2374 | struct mlxsw_sp_rif *rif) |
9665b745 IS |
2375 | { |
2376 | struct mlxsw_sp_nexthop *nh, *tmp; | |
2377 | ||
bf95233e | 2378 | list_for_each_entry_safe(nh, tmp, &rif->nexthop_list, rif_list_node) { |
9665b745 IS |
2379 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); |
2380 | mlxsw_sp_nexthop_rif_fini(nh); | |
2381 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
2382 | } | |
2383 | } | |
2384 | ||
9b01451a PM |
2385 | static bool mlxsw_sp_fi_is_gateway(const struct mlxsw_sp *mlxsw_sp, |
2386 | const struct fib_info *fi) | |
2387 | { | |
2388 | return fi->fib_nh->nh_scope == RT_SCOPE_LINK; | |
2389 | } | |
2390 | ||
a7ff87ac | 2391 | static struct mlxsw_sp_nexthop_group * |
0e6ea2a4 | 2392 | mlxsw_sp_nexthop4_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi) |
a7ff87ac JP |
2393 | { |
2394 | struct mlxsw_sp_nexthop_group *nh_grp; | |
2395 | struct mlxsw_sp_nexthop *nh; | |
2396 | struct fib_nh *fib_nh; | |
2397 | size_t alloc_size; | |
2398 | int i; | |
2399 | int err; | |
2400 | ||
2401 | alloc_size = sizeof(*nh_grp) + | |
2402 | fi->fib_nhs * sizeof(struct mlxsw_sp_nexthop); | |
2403 | nh_grp = kzalloc(alloc_size, GFP_KERNEL); | |
2404 | if (!nh_grp) | |
2405 | return ERR_PTR(-ENOMEM); | |
ba31d366 | 2406 | nh_grp->priv = fi; |
a7ff87ac | 2407 | INIT_LIST_HEAD(&nh_grp->fib_list); |
58adf2c4 IS |
2408 | nh_grp->neigh_tbl = &arp_tbl; |
2409 | ||
9b01451a | 2410 | nh_grp->gateway = mlxsw_sp_fi_is_gateway(mlxsw_sp, fi); |
a7ff87ac | 2411 | nh_grp->count = fi->fib_nhs; |
7387dbbc | 2412 | fib_info_hold(fi); |
a7ff87ac JP |
2413 | for (i = 0; i < nh_grp->count; i++) { |
2414 | nh = &nh_grp->nexthops[i]; | |
2415 | fib_nh = &fi->fib_nh[i]; | |
0e6ea2a4 | 2416 | err = mlxsw_sp_nexthop4_init(mlxsw_sp, nh_grp, nh, fib_nh); |
a7ff87ac | 2417 | if (err) |
0e6ea2a4 | 2418 | goto err_nexthop4_init; |
a7ff87ac | 2419 | } |
e9ad5e7d IS |
2420 | err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); |
2421 | if (err) | |
2422 | goto err_nexthop_group_insert; | |
a7ff87ac JP |
2423 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
2424 | return nh_grp; | |
2425 | ||
e9ad5e7d | 2426 | err_nexthop_group_insert: |
0e6ea2a4 | 2427 | err_nexthop4_init: |
df6dd79b IS |
2428 | for (i--; i >= 0; i--) { |
2429 | nh = &nh_grp->nexthops[i]; | |
0e6ea2a4 | 2430 | mlxsw_sp_nexthop4_fini(mlxsw_sp, nh); |
df6dd79b | 2431 | } |
ba31d366 | 2432 | fib_info_put(fi); |
a7ff87ac JP |
2433 | kfree(nh_grp); |
2434 | return ERR_PTR(err); | |
2435 | } | |
2436 | ||
2437 | static void | |
0e6ea2a4 IS |
2438 | mlxsw_sp_nexthop4_group_destroy(struct mlxsw_sp *mlxsw_sp, |
2439 | struct mlxsw_sp_nexthop_group *nh_grp) | |
a7ff87ac JP |
2440 | { |
2441 | struct mlxsw_sp_nexthop *nh; | |
2442 | int i; | |
2443 | ||
e9ad5e7d | 2444 | mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); |
a7ff87ac JP |
2445 | for (i = 0; i < nh_grp->count; i++) { |
2446 | nh = &nh_grp->nexthops[i]; | |
0e6ea2a4 | 2447 | mlxsw_sp_nexthop4_fini(mlxsw_sp, nh); |
a7ff87ac | 2448 | } |
58312125 IS |
2449 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
2450 | WARN_ON_ONCE(nh_grp->adj_index_valid); | |
ba31d366 | 2451 | fib_info_put(mlxsw_sp_nexthop4_group_fi(nh_grp)); |
a7ff87ac JP |
2452 | kfree(nh_grp); |
2453 | } | |
2454 | ||
0e6ea2a4 IS |
2455 | static int mlxsw_sp_nexthop4_group_get(struct mlxsw_sp *mlxsw_sp, |
2456 | struct mlxsw_sp_fib_entry *fib_entry, | |
2457 | struct fib_info *fi) | |
a7ff87ac JP |
2458 | { |
2459 | struct mlxsw_sp_nexthop_group *nh_grp; | |
2460 | ||
ba31d366 | 2461 | nh_grp = mlxsw_sp_nexthop4_group_lookup(mlxsw_sp, fi); |
a7ff87ac | 2462 | if (!nh_grp) { |
0e6ea2a4 | 2463 | nh_grp = mlxsw_sp_nexthop4_group_create(mlxsw_sp, fi); |
a7ff87ac JP |
2464 | if (IS_ERR(nh_grp)) |
2465 | return PTR_ERR(nh_grp); | |
2466 | } | |
2467 | list_add_tail(&fib_entry->nexthop_group_node, &nh_grp->fib_list); | |
2468 | fib_entry->nh_group = nh_grp; | |
2469 | return 0; | |
2470 | } | |
2471 | ||
0e6ea2a4 IS |
2472 | static void mlxsw_sp_nexthop4_group_put(struct mlxsw_sp *mlxsw_sp, |
2473 | struct mlxsw_sp_fib_entry *fib_entry) | |
a7ff87ac JP |
2474 | { |
2475 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
2476 | ||
2477 | list_del(&fib_entry->nexthop_group_node); | |
2478 | if (!list_empty(&nh_grp->fib_list)) | |
2479 | return; | |
0e6ea2a4 | 2480 | mlxsw_sp_nexthop4_group_destroy(mlxsw_sp, nh_grp); |
a7ff87ac JP |
2481 | } |
2482 | ||
4f1c7f1f IS |
2483 | static bool |
2484 | mlxsw_sp_fib4_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) | |
2485 | { | |
2486 | struct mlxsw_sp_fib4_entry *fib4_entry; | |
2487 | ||
2488 | fib4_entry = container_of(fib_entry, struct mlxsw_sp_fib4_entry, | |
2489 | common); | |
2490 | return !fib4_entry->tos; | |
2491 | } | |
2492 | ||
013b20f9 IS |
2493 | static bool |
2494 | mlxsw_sp_fib_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) | |
2495 | { | |
2496 | struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group; | |
2497 | ||
4f1c7f1f IS |
2498 | switch (fib_entry->fib_node->fib->proto) { |
2499 | case MLXSW_SP_L3_PROTO_IPV4: | |
2500 | if (!mlxsw_sp_fib4_entry_should_offload(fib_entry)) | |
2501 | return false; | |
2502 | break; | |
2503 | case MLXSW_SP_L3_PROTO_IPV6: | |
2504 | break; | |
2505 | } | |
9aecce1c | 2506 | |
013b20f9 IS |
2507 | switch (fib_entry->type) { |
2508 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
2509 | return !!nh_group->adj_index_valid; | |
2510 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: | |
70ad3506 | 2511 | return !!nh_group->nh_rif; |
013b20f9 IS |
2512 | default: |
2513 | return false; | |
2514 | } | |
2515 | } | |
2516 | ||
428b851f IS |
2517 | static struct mlxsw_sp_nexthop * |
2518 | mlxsw_sp_rt6_nexthop(struct mlxsw_sp_nexthop_group *nh_grp, | |
2519 | const struct mlxsw_sp_rt6 *mlxsw_sp_rt6) | |
2520 | { | |
2521 | int i; | |
2522 | ||
2523 | for (i = 0; i < nh_grp->count; i++) { | |
2524 | struct mlxsw_sp_nexthop *nh = &nh_grp->nexthops[i]; | |
2525 | struct rt6_info *rt = mlxsw_sp_rt6->rt; | |
2526 | ||
2527 | if (nh->rif && nh->rif->dev == rt->dst.dev && | |
2528 | ipv6_addr_equal((const struct in6_addr *) &nh->gw_addr, | |
2529 | &rt->rt6i_gateway)) | |
2530 | return nh; | |
2531 | continue; | |
2532 | } | |
2533 | ||
2534 | return NULL; | |
2535 | } | |
2536 | ||
3984d1a8 IS |
2537 | static void |
2538 | mlxsw_sp_fib4_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) | |
2539 | { | |
2540 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
2541 | int i; | |
2542 | ||
2543 | if (fib_entry->type == MLXSW_SP_FIB_ENTRY_TYPE_LOCAL) { | |
2544 | nh_grp->nexthops->key.fib_nh->nh_flags |= RTNH_F_OFFLOAD; | |
2545 | return; | |
2546 | } | |
2547 | ||
2548 | for (i = 0; i < nh_grp->count; i++) { | |
2549 | struct mlxsw_sp_nexthop *nh = &nh_grp->nexthops[i]; | |
2550 | ||
2551 | if (nh->offloaded) | |
2552 | nh->key.fib_nh->nh_flags |= RTNH_F_OFFLOAD; | |
2553 | else | |
2554 | nh->key.fib_nh->nh_flags &= ~RTNH_F_OFFLOAD; | |
2555 | } | |
2556 | } | |
2557 | ||
2558 | static void | |
2559 | mlxsw_sp_fib4_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
2560 | { | |
2561 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
2562 | int i; | |
2563 | ||
2564 | for (i = 0; i < nh_grp->count; i++) { | |
2565 | struct mlxsw_sp_nexthop *nh = &nh_grp->nexthops[i]; | |
2566 | ||
2567 | nh->key.fib_nh->nh_flags &= ~RTNH_F_OFFLOAD; | |
2568 | } | |
2569 | } | |
2570 | ||
428b851f IS |
2571 | static void |
2572 | mlxsw_sp_fib6_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) | |
2573 | { | |
2574 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
2575 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
2576 | ||
2577 | fib6_entry = container_of(fib_entry, struct mlxsw_sp_fib6_entry, | |
2578 | common); | |
2579 | ||
2580 | if (fib_entry->type == MLXSW_SP_FIB_ENTRY_TYPE_LOCAL) { | |
2581 | list_first_entry(&fib6_entry->rt6_list, struct mlxsw_sp_rt6, | |
fe400799 | 2582 | list)->rt->rt6i_nh_flags |= RTNH_F_OFFLOAD; |
428b851f IS |
2583 | return; |
2584 | } | |
2585 | ||
2586 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
2587 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
2588 | struct mlxsw_sp_nexthop *nh; | |
2589 | ||
2590 | nh = mlxsw_sp_rt6_nexthop(nh_grp, mlxsw_sp_rt6); | |
2591 | if (nh && nh->offloaded) | |
fe400799 | 2592 | mlxsw_sp_rt6->rt->rt6i_nh_flags |= RTNH_F_OFFLOAD; |
428b851f | 2593 | else |
fe400799 | 2594 | mlxsw_sp_rt6->rt->rt6i_nh_flags &= ~RTNH_F_OFFLOAD; |
428b851f IS |
2595 | } |
2596 | } | |
2597 | ||
2598 | static void | |
2599 | mlxsw_sp_fib6_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
2600 | { | |
2601 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
2602 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
2603 | ||
2604 | fib6_entry = container_of(fib_entry, struct mlxsw_sp_fib6_entry, | |
2605 | common); | |
2606 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
2607 | struct rt6_info *rt = mlxsw_sp_rt6->rt; | |
2608 | ||
fe400799 | 2609 | rt->rt6i_nh_flags &= ~RTNH_F_OFFLOAD; |
428b851f IS |
2610 | } |
2611 | } | |
2612 | ||
013b20f9 IS |
2613 | static void mlxsw_sp_fib_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) |
2614 | { | |
76610ebb | 2615 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 | 2616 | case MLXSW_SP_L3_PROTO_IPV4: |
3984d1a8 | 2617 | mlxsw_sp_fib4_entry_offload_set(fib_entry); |
013b20f9 IS |
2618 | break; |
2619 | case MLXSW_SP_L3_PROTO_IPV6: | |
428b851f IS |
2620 | mlxsw_sp_fib6_entry_offload_set(fib_entry); |
2621 | break; | |
013b20f9 IS |
2622 | } |
2623 | } | |
2624 | ||
2625 | static void | |
2626 | mlxsw_sp_fib_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
2627 | { | |
76610ebb | 2628 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 | 2629 | case MLXSW_SP_L3_PROTO_IPV4: |
3984d1a8 | 2630 | mlxsw_sp_fib4_entry_offload_unset(fib_entry); |
013b20f9 IS |
2631 | break; |
2632 | case MLXSW_SP_L3_PROTO_IPV6: | |
428b851f IS |
2633 | mlxsw_sp_fib6_entry_offload_unset(fib_entry); |
2634 | break; | |
013b20f9 | 2635 | } |
013b20f9 IS |
2636 | } |
2637 | ||
2638 | static void | |
2639 | mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry, | |
2640 | enum mlxsw_reg_ralue_op op, int err) | |
2641 | { | |
2642 | switch (op) { | |
2643 | case MLXSW_REG_RALUE_OP_WRITE_DELETE: | |
013b20f9 IS |
2644 | return mlxsw_sp_fib_entry_offload_unset(fib_entry); |
2645 | case MLXSW_REG_RALUE_OP_WRITE_WRITE: | |
2646 | if (err) | |
2647 | return; | |
1353ee70 | 2648 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) |
013b20f9 | 2649 | mlxsw_sp_fib_entry_offload_set(fib_entry); |
1353ee70 | 2650 | else if (!mlxsw_sp_fib_entry_should_offload(fib_entry)) |
013b20f9 IS |
2651 | mlxsw_sp_fib_entry_offload_unset(fib_entry); |
2652 | return; | |
2653 | default: | |
2654 | return; | |
2655 | } | |
2656 | } | |
2657 | ||
9dbf4d76 IS |
2658 | static void |
2659 | mlxsw_sp_fib_entry_ralue_pack(char *ralue_pl, | |
2660 | const struct mlxsw_sp_fib_entry *fib_entry, | |
2661 | enum mlxsw_reg_ralue_op op) | |
a7ff87ac | 2662 | { |
76610ebb | 2663 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
9dbf4d76 IS |
2664 | enum mlxsw_reg_ralxx_protocol proto; |
2665 | u32 *p_dip; | |
2666 | ||
2667 | proto = (enum mlxsw_reg_ralxx_protocol) fib->proto; | |
2668 | ||
2669 | switch (fib->proto) { | |
2670 | case MLXSW_SP_L3_PROTO_IPV4: | |
2671 | p_dip = (u32 *) fib_entry->fib_node->key.addr; | |
2672 | mlxsw_reg_ralue_pack4(ralue_pl, proto, op, fib->vr->id, | |
2673 | fib_entry->fib_node->key.prefix_len, | |
2674 | *p_dip); | |
2675 | break; | |
2676 | case MLXSW_SP_L3_PROTO_IPV6: | |
2677 | mlxsw_reg_ralue_pack6(ralue_pl, proto, op, fib->vr->id, | |
2678 | fib_entry->fib_node->key.prefix_len, | |
2679 | fib_entry->fib_node->key.addr); | |
2680 | break; | |
2681 | } | |
2682 | } | |
2683 | ||
2684 | static int mlxsw_sp_fib_entry_op_remote(struct mlxsw_sp *mlxsw_sp, | |
2685 | struct mlxsw_sp_fib_entry *fib_entry, | |
2686 | enum mlxsw_reg_ralue_op op) | |
2687 | { | |
2688 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
a7ff87ac JP |
2689 | enum mlxsw_reg_ralue_trap_action trap_action; |
2690 | u16 trap_id = 0; | |
2691 | u32 adjacency_index = 0; | |
2692 | u16 ecmp_size = 0; | |
2693 | ||
2694 | /* In case the nexthop group adjacency index is valid, use it | |
2695 | * with provided ECMP size. Otherwise, setup trap and pass | |
2696 | * traffic to kernel. | |
2697 | */ | |
4b411477 | 2698 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { |
a7ff87ac JP |
2699 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; |
2700 | adjacency_index = fib_entry->nh_group->adj_index; | |
2701 | ecmp_size = fib_entry->nh_group->ecmp_size; | |
2702 | } else { | |
2703 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
2704 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
2705 | } | |
2706 | ||
9dbf4d76 | 2707 | mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); |
a7ff87ac JP |
2708 | mlxsw_reg_ralue_act_remote_pack(ralue_pl, trap_action, trap_id, |
2709 | adjacency_index, ecmp_size); | |
2710 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
2711 | } | |
2712 | ||
9dbf4d76 IS |
2713 | static int mlxsw_sp_fib_entry_op_local(struct mlxsw_sp *mlxsw_sp, |
2714 | struct mlxsw_sp_fib_entry *fib_entry, | |
2715 | enum mlxsw_reg_ralue_op op) | |
61c503f9 | 2716 | { |
bf95233e | 2717 | struct mlxsw_sp_rif *rif = fib_entry->nh_group->nh_rif; |
70ad3506 | 2718 | enum mlxsw_reg_ralue_trap_action trap_action; |
61c503f9 | 2719 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
70ad3506 | 2720 | u16 trap_id = 0; |
bf95233e | 2721 | u16 rif_index = 0; |
70ad3506 IS |
2722 | |
2723 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { | |
2724 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; | |
bf95233e | 2725 | rif_index = rif->rif_index; |
70ad3506 IS |
2726 | } else { |
2727 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
2728 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
2729 | } | |
61c503f9 | 2730 | |
9dbf4d76 | 2731 | mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); |
bf95233e AS |
2732 | mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id, |
2733 | rif_index); | |
61c503f9 JP |
2734 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); |
2735 | } | |
2736 | ||
9dbf4d76 IS |
2737 | static int mlxsw_sp_fib_entry_op_trap(struct mlxsw_sp *mlxsw_sp, |
2738 | struct mlxsw_sp_fib_entry *fib_entry, | |
2739 | enum mlxsw_reg_ralue_op op) | |
61c503f9 JP |
2740 | { |
2741 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
61c503f9 | 2742 | |
9dbf4d76 | 2743 | mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); |
61c503f9 JP |
2744 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); |
2745 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
2746 | } | |
2747 | ||
9dbf4d76 IS |
2748 | static int __mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, |
2749 | struct mlxsw_sp_fib_entry *fib_entry, | |
2750 | enum mlxsw_reg_ralue_op op) | |
61c503f9 JP |
2751 | { |
2752 | switch (fib_entry->type) { | |
2753 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
9dbf4d76 | 2754 | return mlxsw_sp_fib_entry_op_remote(mlxsw_sp, fib_entry, op); |
61c503f9 | 2755 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: |
9dbf4d76 | 2756 | return mlxsw_sp_fib_entry_op_local(mlxsw_sp, fib_entry, op); |
61c503f9 | 2757 | case MLXSW_SP_FIB_ENTRY_TYPE_TRAP: |
9dbf4d76 | 2758 | return mlxsw_sp_fib_entry_op_trap(mlxsw_sp, fib_entry, op); |
61c503f9 JP |
2759 | } |
2760 | return -EINVAL; | |
2761 | } | |
2762 | ||
2763 | static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, | |
2764 | struct mlxsw_sp_fib_entry *fib_entry, | |
2765 | enum mlxsw_reg_ralue_op op) | |
2766 | { | |
9dbf4d76 | 2767 | int err = __mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, op); |
013b20f9 | 2768 | |
013b20f9 | 2769 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, err); |
9dbf4d76 | 2770 | |
013b20f9 | 2771 | return err; |
61c503f9 JP |
2772 | } |
2773 | ||
2774 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
2775 | struct mlxsw_sp_fib_entry *fib_entry) | |
2776 | { | |
7146da31 JP |
2777 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, |
2778 | MLXSW_REG_RALUE_OP_WRITE_WRITE); | |
61c503f9 JP |
2779 | } |
2780 | ||
2781 | static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp, | |
2782 | struct mlxsw_sp_fib_entry *fib_entry) | |
2783 | { | |
2784 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, | |
2785 | MLXSW_REG_RALUE_OP_WRITE_DELETE); | |
2786 | } | |
2787 | ||
61c503f9 | 2788 | static int |
013b20f9 IS |
2789 | mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp, |
2790 | const struct fib_entry_notifier_info *fen_info, | |
2791 | struct mlxsw_sp_fib_entry *fib_entry) | |
61c503f9 | 2792 | { |
b45f64d1 | 2793 | struct fib_info *fi = fen_info->fi; |
61c503f9 | 2794 | |
97989ee0 IS |
2795 | switch (fen_info->type) { |
2796 | case RTN_BROADCAST: /* fall through */ | |
2797 | case RTN_LOCAL: | |
61c503f9 JP |
2798 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; |
2799 | return 0; | |
97989ee0 IS |
2800 | case RTN_UNREACHABLE: /* fall through */ |
2801 | case RTN_BLACKHOLE: /* fall through */ | |
2802 | case RTN_PROHIBIT: | |
2803 | /* Packets hitting these routes need to be trapped, but | |
2804 | * can do so with a lower priority than packets directed | |
2805 | * at the host, so use action type local instead of trap. | |
2806 | */ | |
61c503f9 | 2807 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; |
97989ee0 IS |
2808 | return 0; |
2809 | case RTN_UNICAST: | |
9b01451a | 2810 | if (mlxsw_sp_fi_is_gateway(mlxsw_sp, fi)) |
97989ee0 | 2811 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; |
9b01451a PM |
2812 | else |
2813 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
97989ee0 IS |
2814 | return 0; |
2815 | default: | |
2816 | return -EINVAL; | |
2817 | } | |
a7ff87ac JP |
2818 | } |
2819 | ||
4f1c7f1f | 2820 | static struct mlxsw_sp_fib4_entry * |
9aecce1c IS |
2821 | mlxsw_sp_fib4_entry_create(struct mlxsw_sp *mlxsw_sp, |
2822 | struct mlxsw_sp_fib_node *fib_node, | |
2823 | const struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 2824 | { |
4f1c7f1f | 2825 | struct mlxsw_sp_fib4_entry *fib4_entry; |
61c503f9 | 2826 | struct mlxsw_sp_fib_entry *fib_entry; |
61c503f9 JP |
2827 | int err; |
2828 | ||
4f1c7f1f IS |
2829 | fib4_entry = kzalloc(sizeof(*fib4_entry), GFP_KERNEL); |
2830 | if (!fib4_entry) | |
2831 | return ERR_PTR(-ENOMEM); | |
2832 | fib_entry = &fib4_entry->common; | |
61c503f9 | 2833 | |
013b20f9 | 2834 | err = mlxsw_sp_fib4_entry_type_set(mlxsw_sp, fen_info, fib_entry); |
61c503f9 | 2835 | if (err) |
013b20f9 | 2836 | goto err_fib4_entry_type_set; |
61c503f9 | 2837 | |
0e6ea2a4 | 2838 | err = mlxsw_sp_nexthop4_group_get(mlxsw_sp, fib_entry, fen_info->fi); |
b8399a1e | 2839 | if (err) |
0e6ea2a4 | 2840 | goto err_nexthop4_group_get; |
b8399a1e | 2841 | |
4f1c7f1f IS |
2842 | fib4_entry->prio = fen_info->fi->fib_priority; |
2843 | fib4_entry->tb_id = fen_info->tb_id; | |
2844 | fib4_entry->type = fen_info->type; | |
2845 | fib4_entry->tos = fen_info->tos; | |
9aecce1c IS |
2846 | |
2847 | fib_entry->fib_node = fib_node; | |
2848 | ||
4f1c7f1f | 2849 | return fib4_entry; |
5b004412 | 2850 | |
0e6ea2a4 | 2851 | err_nexthop4_group_get: |
013b20f9 | 2852 | err_fib4_entry_type_set: |
4f1c7f1f | 2853 | kfree(fib4_entry); |
5b004412 JP |
2854 | return ERR_PTR(err); |
2855 | } | |
2856 | ||
9aecce1c | 2857 | static void mlxsw_sp_fib4_entry_destroy(struct mlxsw_sp *mlxsw_sp, |
4f1c7f1f | 2858 | struct mlxsw_sp_fib4_entry *fib4_entry) |
9aecce1c | 2859 | { |
0e6ea2a4 | 2860 | mlxsw_sp_nexthop4_group_put(mlxsw_sp, &fib4_entry->common); |
4f1c7f1f | 2861 | kfree(fib4_entry); |
9aecce1c IS |
2862 | } |
2863 | ||
2864 | static struct mlxsw_sp_fib_node * | |
160e22aa IS |
2865 | mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr, |
2866 | size_t addr_len, unsigned char prefix_len); | |
9aecce1c | 2867 | |
4f1c7f1f | 2868 | static struct mlxsw_sp_fib4_entry * |
9aecce1c IS |
2869 | mlxsw_sp_fib4_entry_lookup(struct mlxsw_sp *mlxsw_sp, |
2870 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 2871 | { |
4f1c7f1f | 2872 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 2873 | struct mlxsw_sp_fib_node *fib_node; |
160e22aa IS |
2874 | struct mlxsw_sp_fib *fib; |
2875 | struct mlxsw_sp_vr *vr; | |
2876 | ||
2877 | vr = mlxsw_sp_vr_find(mlxsw_sp, fen_info->tb_id); | |
2878 | if (!vr) | |
2879 | return NULL; | |
2880 | fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV4); | |
5b004412 | 2881 | |
160e22aa IS |
2882 | fib_node = mlxsw_sp_fib_node_lookup(fib, &fen_info->dst, |
2883 | sizeof(fen_info->dst), | |
2884 | fen_info->dst_len); | |
2885 | if (!fib_node) | |
9aecce1c IS |
2886 | return NULL; |
2887 | ||
4f1c7f1f IS |
2888 | list_for_each_entry(fib4_entry, &fib_node->entry_list, common.list) { |
2889 | if (fib4_entry->tb_id == fen_info->tb_id && | |
2890 | fib4_entry->tos == fen_info->tos && | |
2891 | fib4_entry->type == fen_info->type && | |
ba31d366 AS |
2892 | mlxsw_sp_nexthop4_group_fi(fib4_entry->common.nh_group) == |
2893 | fen_info->fi) { | |
4f1c7f1f | 2894 | return fib4_entry; |
9aecce1c IS |
2895 | } |
2896 | } | |
2897 | ||
2898 | return NULL; | |
2899 | } | |
2900 | ||
2901 | static const struct rhashtable_params mlxsw_sp_fib_ht_params = { | |
2902 | .key_offset = offsetof(struct mlxsw_sp_fib_node, key), | |
2903 | .head_offset = offsetof(struct mlxsw_sp_fib_node, ht_node), | |
2904 | .key_len = sizeof(struct mlxsw_sp_fib_key), | |
2905 | .automatic_shrinking = true, | |
2906 | }; | |
2907 | ||
2908 | static int mlxsw_sp_fib_node_insert(struct mlxsw_sp_fib *fib, | |
2909 | struct mlxsw_sp_fib_node *fib_node) | |
2910 | { | |
2911 | return rhashtable_insert_fast(&fib->ht, &fib_node->ht_node, | |
2912 | mlxsw_sp_fib_ht_params); | |
2913 | } | |
2914 | ||
2915 | static void mlxsw_sp_fib_node_remove(struct mlxsw_sp_fib *fib, | |
2916 | struct mlxsw_sp_fib_node *fib_node) | |
2917 | { | |
2918 | rhashtable_remove_fast(&fib->ht, &fib_node->ht_node, | |
2919 | mlxsw_sp_fib_ht_params); | |
2920 | } | |
2921 | ||
2922 | static struct mlxsw_sp_fib_node * | |
2923 | mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr, | |
2924 | size_t addr_len, unsigned char prefix_len) | |
2925 | { | |
2926 | struct mlxsw_sp_fib_key key; | |
2927 | ||
2928 | memset(&key, 0, sizeof(key)); | |
2929 | memcpy(key.addr, addr, addr_len); | |
2930 | key.prefix_len = prefix_len; | |
2931 | return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params); | |
2932 | } | |
2933 | ||
2934 | static struct mlxsw_sp_fib_node * | |
76610ebb | 2935 | mlxsw_sp_fib_node_create(struct mlxsw_sp_fib *fib, const void *addr, |
9aecce1c IS |
2936 | size_t addr_len, unsigned char prefix_len) |
2937 | { | |
2938 | struct mlxsw_sp_fib_node *fib_node; | |
2939 | ||
2940 | fib_node = kzalloc(sizeof(*fib_node), GFP_KERNEL); | |
2941 | if (!fib_node) | |
5b004412 JP |
2942 | return NULL; |
2943 | ||
9aecce1c | 2944 | INIT_LIST_HEAD(&fib_node->entry_list); |
76610ebb | 2945 | list_add(&fib_node->list, &fib->node_list); |
9aecce1c IS |
2946 | memcpy(fib_node->key.addr, addr, addr_len); |
2947 | fib_node->key.prefix_len = prefix_len; | |
9aecce1c IS |
2948 | |
2949 | return fib_node; | |
2950 | } | |
2951 | ||
2952 | static void mlxsw_sp_fib_node_destroy(struct mlxsw_sp_fib_node *fib_node) | |
2953 | { | |
9aecce1c IS |
2954 | list_del(&fib_node->list); |
2955 | WARN_ON(!list_empty(&fib_node->entry_list)); | |
2956 | kfree(fib_node); | |
2957 | } | |
2958 | ||
2959 | static bool | |
2960 | mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node, | |
2961 | const struct mlxsw_sp_fib_entry *fib_entry) | |
2962 | { | |
2963 | return list_first_entry(&fib_node->entry_list, | |
2964 | struct mlxsw_sp_fib_entry, list) == fib_entry; | |
2965 | } | |
2966 | ||
fc922bb0 IS |
2967 | static int mlxsw_sp_fib_lpm_tree_link(struct mlxsw_sp *mlxsw_sp, |
2968 | struct mlxsw_sp_fib *fib, | |
2969 | struct mlxsw_sp_fib_node *fib_node) | |
2970 | { | |
2971 | struct mlxsw_sp_prefix_usage req_prefix_usage = {{ 0 } }; | |
2972 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
2973 | int err; | |
2974 | ||
2975 | /* Since the tree is shared between all virtual routers we must | |
2976 | * make sure it contains all the required prefix lengths. This | |
2977 | * can be computed by either adding the new prefix length to the | |
2978 | * existing prefix usage of a bound tree, or by aggregating the | |
2979 | * prefix lengths across all virtual routers and adding the new | |
2980 | * one as well. | |
2981 | */ | |
2982 | if (fib->lpm_tree) | |
2983 | mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, | |
2984 | &fib->lpm_tree->prefix_usage); | |
2985 | else | |
2986 | mlxsw_sp_vrs_prefixes(mlxsw_sp, fib->proto, &req_prefix_usage); | |
2987 | mlxsw_sp_prefix_usage_set(&req_prefix_usage, fib_node->key.prefix_len); | |
2988 | ||
2989 | lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, | |
2990 | fib->proto); | |
2991 | if (IS_ERR(lpm_tree)) | |
2992 | return PTR_ERR(lpm_tree); | |
2993 | ||
2994 | if (fib->lpm_tree && fib->lpm_tree->id == lpm_tree->id) | |
2995 | return 0; | |
2996 | ||
2997 | err = mlxsw_sp_vrs_lpm_tree_replace(mlxsw_sp, fib, lpm_tree); | |
2998 | if (err) | |
2999 | return err; | |
3000 | ||
3001 | return 0; | |
3002 | } | |
3003 | ||
3004 | static void mlxsw_sp_fib_lpm_tree_unlink(struct mlxsw_sp *mlxsw_sp, | |
3005 | struct mlxsw_sp_fib *fib) | |
3006 | { | |
3007 | struct mlxsw_sp_prefix_usage req_prefix_usage = {{ 0 } }; | |
3008 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
3009 | ||
3010 | /* Aggregate prefix lengths across all virtual routers to make | |
3011 | * sure we only have used prefix lengths in the LPM tree. | |
3012 | */ | |
3013 | mlxsw_sp_vrs_prefixes(mlxsw_sp, fib->proto, &req_prefix_usage); | |
3014 | lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, | |
3015 | fib->proto); | |
3016 | if (IS_ERR(lpm_tree)) | |
3017 | goto err_tree_get; | |
3018 | mlxsw_sp_vrs_lpm_tree_replace(mlxsw_sp, fib, lpm_tree); | |
3019 | ||
3020 | err_tree_get: | |
3021 | if (!mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) | |
3022 | return; | |
3023 | mlxsw_sp_vr_lpm_tree_unbind(mlxsw_sp, fib); | |
3024 | mlxsw_sp_lpm_tree_put(mlxsw_sp, fib->lpm_tree); | |
3025 | fib->lpm_tree = NULL; | |
3026 | } | |
3027 | ||
9aecce1c IS |
3028 | static void mlxsw_sp_fib_node_prefix_inc(struct mlxsw_sp_fib_node *fib_node) |
3029 | { | |
3030 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 3031 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
3032 | |
3033 | if (fib->prefix_ref_count[prefix_len]++ == 0) | |
3034 | mlxsw_sp_prefix_usage_set(&fib->prefix_usage, prefix_len); | |
3035 | } | |
3036 | ||
3037 | static void mlxsw_sp_fib_node_prefix_dec(struct mlxsw_sp_fib_node *fib_node) | |
3038 | { | |
3039 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 3040 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
3041 | |
3042 | if (--fib->prefix_ref_count[prefix_len] == 0) | |
3043 | mlxsw_sp_prefix_usage_clear(&fib->prefix_usage, prefix_len); | |
5b004412 JP |
3044 | } |
3045 | ||
76610ebb IS |
3046 | static int mlxsw_sp_fib_node_init(struct mlxsw_sp *mlxsw_sp, |
3047 | struct mlxsw_sp_fib_node *fib_node, | |
3048 | struct mlxsw_sp_fib *fib) | |
3049 | { | |
76610ebb IS |
3050 | int err; |
3051 | ||
3052 | err = mlxsw_sp_fib_node_insert(fib, fib_node); | |
3053 | if (err) | |
3054 | return err; | |
3055 | fib_node->fib = fib; | |
3056 | ||
fc922bb0 IS |
3057 | err = mlxsw_sp_fib_lpm_tree_link(mlxsw_sp, fib, fib_node); |
3058 | if (err) | |
3059 | goto err_fib_lpm_tree_link; | |
76610ebb IS |
3060 | |
3061 | mlxsw_sp_fib_node_prefix_inc(fib_node); | |
3062 | ||
3063 | return 0; | |
3064 | ||
fc922bb0 | 3065 | err_fib_lpm_tree_link: |
76610ebb IS |
3066 | fib_node->fib = NULL; |
3067 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
3068 | return err; | |
3069 | } | |
3070 | ||
3071 | static void mlxsw_sp_fib_node_fini(struct mlxsw_sp *mlxsw_sp, | |
3072 | struct mlxsw_sp_fib_node *fib_node) | |
3073 | { | |
76610ebb IS |
3074 | struct mlxsw_sp_fib *fib = fib_node->fib; |
3075 | ||
3076 | mlxsw_sp_fib_node_prefix_dec(fib_node); | |
fc922bb0 | 3077 | mlxsw_sp_fib_lpm_tree_unlink(mlxsw_sp, fib); |
76610ebb IS |
3078 | fib_node->fib = NULL; |
3079 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
3080 | } | |
3081 | ||
9aecce1c | 3082 | static struct mlxsw_sp_fib_node * |
731ea1ca IS |
3083 | mlxsw_sp_fib_node_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id, const void *addr, |
3084 | size_t addr_len, unsigned char prefix_len, | |
3085 | enum mlxsw_sp_l3proto proto) | |
5b004412 | 3086 | { |
9aecce1c | 3087 | struct mlxsw_sp_fib_node *fib_node; |
76610ebb | 3088 | struct mlxsw_sp_fib *fib; |
9aecce1c IS |
3089 | struct mlxsw_sp_vr *vr; |
3090 | int err; | |
3091 | ||
731ea1ca | 3092 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id); |
9aecce1c IS |
3093 | if (IS_ERR(vr)) |
3094 | return ERR_CAST(vr); | |
731ea1ca | 3095 | fib = mlxsw_sp_vr_fib(vr, proto); |
9aecce1c | 3096 | |
731ea1ca | 3097 | fib_node = mlxsw_sp_fib_node_lookup(fib, addr, addr_len, prefix_len); |
9aecce1c IS |
3098 | if (fib_node) |
3099 | return fib_node; | |
5b004412 | 3100 | |
731ea1ca | 3101 | fib_node = mlxsw_sp_fib_node_create(fib, addr, addr_len, prefix_len); |
9aecce1c IS |
3102 | if (!fib_node) { |
3103 | err = -ENOMEM; | |
3104 | goto err_fib_node_create; | |
5b004412 | 3105 | } |
9aecce1c | 3106 | |
76610ebb IS |
3107 | err = mlxsw_sp_fib_node_init(mlxsw_sp, fib_node, fib); |
3108 | if (err) | |
3109 | goto err_fib_node_init; | |
3110 | ||
9aecce1c IS |
3111 | return fib_node; |
3112 | ||
76610ebb IS |
3113 | err_fib_node_init: |
3114 | mlxsw_sp_fib_node_destroy(fib_node); | |
9aecce1c | 3115 | err_fib_node_create: |
76610ebb | 3116 | mlxsw_sp_vr_put(vr); |
9aecce1c | 3117 | return ERR_PTR(err); |
5b004412 JP |
3118 | } |
3119 | ||
731ea1ca IS |
3120 | static void mlxsw_sp_fib_node_put(struct mlxsw_sp *mlxsw_sp, |
3121 | struct mlxsw_sp_fib_node *fib_node) | |
5b004412 | 3122 | { |
76610ebb | 3123 | struct mlxsw_sp_vr *vr = fib_node->fib->vr; |
5b004412 | 3124 | |
9aecce1c IS |
3125 | if (!list_empty(&fib_node->entry_list)) |
3126 | return; | |
76610ebb | 3127 | mlxsw_sp_fib_node_fini(mlxsw_sp, fib_node); |
9aecce1c | 3128 | mlxsw_sp_fib_node_destroy(fib_node); |
76610ebb | 3129 | mlxsw_sp_vr_put(vr); |
61c503f9 JP |
3130 | } |
3131 | ||
4f1c7f1f | 3132 | static struct mlxsw_sp_fib4_entry * |
9aecce1c | 3133 | mlxsw_sp_fib4_node_entry_find(const struct mlxsw_sp_fib_node *fib_node, |
4f1c7f1f | 3134 | const struct mlxsw_sp_fib4_entry *new4_entry) |
61c503f9 | 3135 | { |
4f1c7f1f | 3136 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 3137 | |
4f1c7f1f IS |
3138 | list_for_each_entry(fib4_entry, &fib_node->entry_list, common.list) { |
3139 | if (fib4_entry->tb_id > new4_entry->tb_id) | |
9aecce1c | 3140 | continue; |
4f1c7f1f | 3141 | if (fib4_entry->tb_id != new4_entry->tb_id) |
9aecce1c | 3142 | break; |
4f1c7f1f | 3143 | if (fib4_entry->tos > new4_entry->tos) |
9aecce1c | 3144 | continue; |
4f1c7f1f IS |
3145 | if (fib4_entry->prio >= new4_entry->prio || |
3146 | fib4_entry->tos < new4_entry->tos) | |
3147 | return fib4_entry; | |
9aecce1c IS |
3148 | } |
3149 | ||
3150 | return NULL; | |
3151 | } | |
3152 | ||
4f1c7f1f IS |
3153 | static int |
3154 | mlxsw_sp_fib4_node_list_append(struct mlxsw_sp_fib4_entry *fib4_entry, | |
3155 | struct mlxsw_sp_fib4_entry *new4_entry) | |
4283bce5 IS |
3156 | { |
3157 | struct mlxsw_sp_fib_node *fib_node; | |
3158 | ||
4f1c7f1f | 3159 | if (WARN_ON(!fib4_entry)) |
4283bce5 IS |
3160 | return -EINVAL; |
3161 | ||
4f1c7f1f IS |
3162 | fib_node = fib4_entry->common.fib_node; |
3163 | list_for_each_entry_from(fib4_entry, &fib_node->entry_list, | |
3164 | common.list) { | |
3165 | if (fib4_entry->tb_id != new4_entry->tb_id || | |
3166 | fib4_entry->tos != new4_entry->tos || | |
3167 | fib4_entry->prio != new4_entry->prio) | |
4283bce5 IS |
3168 | break; |
3169 | } | |
3170 | ||
4f1c7f1f | 3171 | list_add_tail(&new4_entry->common.list, &fib4_entry->common.list); |
4283bce5 IS |
3172 | return 0; |
3173 | } | |
3174 | ||
9aecce1c | 3175 | static int |
9efbee6f | 3176 | mlxsw_sp_fib4_node_list_insert(struct mlxsw_sp_fib4_entry *new4_entry, |
599cf8f9 | 3177 | bool replace, bool append) |
9aecce1c | 3178 | { |
9efbee6f | 3179 | struct mlxsw_sp_fib_node *fib_node = new4_entry->common.fib_node; |
4f1c7f1f | 3180 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 3181 | |
4f1c7f1f | 3182 | fib4_entry = mlxsw_sp_fib4_node_entry_find(fib_node, new4_entry); |
9aecce1c | 3183 | |
4283bce5 | 3184 | if (append) |
4f1c7f1f IS |
3185 | return mlxsw_sp_fib4_node_list_append(fib4_entry, new4_entry); |
3186 | if (replace && WARN_ON(!fib4_entry)) | |
599cf8f9 | 3187 | return -EINVAL; |
4283bce5 | 3188 | |
599cf8f9 IS |
3189 | /* Insert new entry before replaced one, so that we can later |
3190 | * remove the second. | |
3191 | */ | |
4f1c7f1f IS |
3192 | if (fib4_entry) { |
3193 | list_add_tail(&new4_entry->common.list, | |
3194 | &fib4_entry->common.list); | |
9aecce1c | 3195 | } else { |
4f1c7f1f | 3196 | struct mlxsw_sp_fib4_entry *last; |
9aecce1c | 3197 | |
4f1c7f1f IS |
3198 | list_for_each_entry(last, &fib_node->entry_list, common.list) { |
3199 | if (new4_entry->tb_id > last->tb_id) | |
9aecce1c | 3200 | break; |
4f1c7f1f | 3201 | fib4_entry = last; |
9aecce1c IS |
3202 | } |
3203 | ||
4f1c7f1f IS |
3204 | if (fib4_entry) |
3205 | list_add(&new4_entry->common.list, | |
3206 | &fib4_entry->common.list); | |
9aecce1c | 3207 | else |
4f1c7f1f IS |
3208 | list_add(&new4_entry->common.list, |
3209 | &fib_node->entry_list); | |
9aecce1c IS |
3210 | } |
3211 | ||
3212 | return 0; | |
3213 | } | |
3214 | ||
3215 | static void | |
4f1c7f1f | 3216 | mlxsw_sp_fib4_node_list_remove(struct mlxsw_sp_fib4_entry *fib4_entry) |
9aecce1c | 3217 | { |
4f1c7f1f | 3218 | list_del(&fib4_entry->common.list); |
9aecce1c IS |
3219 | } |
3220 | ||
80c238f9 IS |
3221 | static int mlxsw_sp_fib_node_entry_add(struct mlxsw_sp *mlxsw_sp, |
3222 | struct mlxsw_sp_fib_entry *fib_entry) | |
9aecce1c | 3223 | { |
9efbee6f IS |
3224 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; |
3225 | ||
9aecce1c IS |
3226 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) |
3227 | return 0; | |
3228 | ||
3229 | /* To prevent packet loss, overwrite the previously offloaded | |
3230 | * entry. | |
3231 | */ | |
3232 | if (!list_is_singular(&fib_node->entry_list)) { | |
3233 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
3234 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
3235 | ||
3236 | mlxsw_sp_fib_entry_offload_refresh(n, op, 0); | |
3237 | } | |
3238 | ||
3239 | return mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
3240 | } | |
3241 | ||
80c238f9 IS |
3242 | static void mlxsw_sp_fib_node_entry_del(struct mlxsw_sp *mlxsw_sp, |
3243 | struct mlxsw_sp_fib_entry *fib_entry) | |
9aecce1c | 3244 | { |
9efbee6f IS |
3245 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; |
3246 | ||
9aecce1c IS |
3247 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) |
3248 | return; | |
3249 | ||
3250 | /* Promote the next entry by overwriting the deleted entry */ | |
3251 | if (!list_is_singular(&fib_node->entry_list)) { | |
3252 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
3253 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
3254 | ||
3255 | mlxsw_sp_fib_entry_update(mlxsw_sp, n); | |
3256 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0); | |
3257 | return; | |
3258 | } | |
3259 | ||
3260 | mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry); | |
3261 | } | |
3262 | ||
3263 | static int mlxsw_sp_fib4_node_entry_link(struct mlxsw_sp *mlxsw_sp, | |
4f1c7f1f | 3264 | struct mlxsw_sp_fib4_entry *fib4_entry, |
599cf8f9 | 3265 | bool replace, bool append) |
9aecce1c | 3266 | { |
9aecce1c IS |
3267 | int err; |
3268 | ||
9efbee6f | 3269 | err = mlxsw_sp_fib4_node_list_insert(fib4_entry, replace, append); |
9aecce1c IS |
3270 | if (err) |
3271 | return err; | |
3272 | ||
80c238f9 | 3273 | err = mlxsw_sp_fib_node_entry_add(mlxsw_sp, &fib4_entry->common); |
9aecce1c | 3274 | if (err) |
80c238f9 | 3275 | goto err_fib_node_entry_add; |
9aecce1c | 3276 | |
9aecce1c IS |
3277 | return 0; |
3278 | ||
80c238f9 | 3279 | err_fib_node_entry_add: |
4f1c7f1f | 3280 | mlxsw_sp_fib4_node_list_remove(fib4_entry); |
9aecce1c IS |
3281 | return err; |
3282 | } | |
3283 | ||
3284 | static void | |
3285 | mlxsw_sp_fib4_node_entry_unlink(struct mlxsw_sp *mlxsw_sp, | |
4f1c7f1f | 3286 | struct mlxsw_sp_fib4_entry *fib4_entry) |
9aecce1c | 3287 | { |
80c238f9 | 3288 | mlxsw_sp_fib_node_entry_del(mlxsw_sp, &fib4_entry->common); |
4f1c7f1f | 3289 | mlxsw_sp_fib4_node_list_remove(fib4_entry); |
9aecce1c IS |
3290 | } |
3291 | ||
599cf8f9 | 3292 | static void mlxsw_sp_fib4_entry_replace(struct mlxsw_sp *mlxsw_sp, |
4f1c7f1f | 3293 | struct mlxsw_sp_fib4_entry *fib4_entry, |
599cf8f9 IS |
3294 | bool replace) |
3295 | { | |
4f1c7f1f IS |
3296 | struct mlxsw_sp_fib_node *fib_node = fib4_entry->common.fib_node; |
3297 | struct mlxsw_sp_fib4_entry *replaced; | |
599cf8f9 IS |
3298 | |
3299 | if (!replace) | |
3300 | return; | |
3301 | ||
3302 | /* We inserted the new entry before replaced one */ | |
4f1c7f1f | 3303 | replaced = list_next_entry(fib4_entry, common.list); |
599cf8f9 IS |
3304 | |
3305 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, replaced); | |
3306 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, replaced); | |
731ea1ca | 3307 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); |
599cf8f9 IS |
3308 | } |
3309 | ||
9aecce1c IS |
3310 | static int |
3311 | mlxsw_sp_router_fib4_add(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 3312 | const struct fib_entry_notifier_info *fen_info, |
599cf8f9 | 3313 | bool replace, bool append) |
9aecce1c | 3314 | { |
4f1c7f1f | 3315 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 3316 | struct mlxsw_sp_fib_node *fib_node; |
61c503f9 JP |
3317 | int err; |
3318 | ||
9011b677 | 3319 | if (mlxsw_sp->router->aborted) |
b45f64d1 JP |
3320 | return 0; |
3321 | ||
731ea1ca IS |
3322 | fib_node = mlxsw_sp_fib_node_get(mlxsw_sp, fen_info->tb_id, |
3323 | &fen_info->dst, sizeof(fen_info->dst), | |
3324 | fen_info->dst_len, | |
3325 | MLXSW_SP_L3_PROTO_IPV4); | |
9aecce1c IS |
3326 | if (IS_ERR(fib_node)) { |
3327 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to get FIB node\n"); | |
3328 | return PTR_ERR(fib_node); | |
b45f64d1 | 3329 | } |
61c503f9 | 3330 | |
4f1c7f1f IS |
3331 | fib4_entry = mlxsw_sp_fib4_entry_create(mlxsw_sp, fib_node, fen_info); |
3332 | if (IS_ERR(fib4_entry)) { | |
9aecce1c | 3333 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to create FIB entry\n"); |
4f1c7f1f | 3334 | err = PTR_ERR(fib4_entry); |
9aecce1c IS |
3335 | goto err_fib4_entry_create; |
3336 | } | |
5b004412 | 3337 | |
4f1c7f1f | 3338 | err = mlxsw_sp_fib4_node_entry_link(mlxsw_sp, fib4_entry, replace, |
599cf8f9 | 3339 | append); |
b45f64d1 | 3340 | if (err) { |
9aecce1c IS |
3341 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to link FIB entry to node\n"); |
3342 | goto err_fib4_node_entry_link; | |
b45f64d1 | 3343 | } |
9aecce1c | 3344 | |
4f1c7f1f | 3345 | mlxsw_sp_fib4_entry_replace(mlxsw_sp, fib4_entry, replace); |
599cf8f9 | 3346 | |
61c503f9 JP |
3347 | return 0; |
3348 | ||
9aecce1c | 3349 | err_fib4_node_entry_link: |
4f1c7f1f | 3350 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); |
9aecce1c | 3351 | err_fib4_entry_create: |
731ea1ca | 3352 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); |
61c503f9 JP |
3353 | return err; |
3354 | } | |
3355 | ||
37956d78 JP |
3356 | static void mlxsw_sp_router_fib4_del(struct mlxsw_sp *mlxsw_sp, |
3357 | struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 3358 | { |
4f1c7f1f | 3359 | struct mlxsw_sp_fib4_entry *fib4_entry; |
9aecce1c | 3360 | struct mlxsw_sp_fib_node *fib_node; |
61c503f9 | 3361 | |
9011b677 | 3362 | if (mlxsw_sp->router->aborted) |
37956d78 | 3363 | return; |
b45f64d1 | 3364 | |
4f1c7f1f IS |
3365 | fib4_entry = mlxsw_sp_fib4_entry_lookup(mlxsw_sp, fen_info); |
3366 | if (WARN_ON(!fib4_entry)) | |
37956d78 | 3367 | return; |
4f1c7f1f | 3368 | fib_node = fib4_entry->common.fib_node; |
5b004412 | 3369 | |
4f1c7f1f IS |
3370 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib4_entry); |
3371 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); | |
731ea1ca | 3372 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); |
61c503f9 | 3373 | } |
b45f64d1 | 3374 | |
428b851f IS |
3375 | static bool mlxsw_sp_fib6_rt_should_ignore(const struct rt6_info *rt) |
3376 | { | |
3377 | /* Packets with link-local destination IP arriving to the router | |
3378 | * are trapped to the CPU, so no need to program specific routes | |
3379 | * for them. | |
3380 | */ | |
3381 | if (ipv6_addr_type(&rt->rt6i_dst.addr) & IPV6_ADDR_LINKLOCAL) | |
3382 | return true; | |
3383 | ||
3384 | /* Multicast routes aren't supported, so ignore them. Neighbour | |
3385 | * Discovery packets are specifically trapped. | |
3386 | */ | |
3387 | if (ipv6_addr_type(&rt->rt6i_dst.addr) & IPV6_ADDR_MULTICAST) | |
3388 | return true; | |
3389 | ||
3390 | /* Cloned routes are irrelevant in the forwarding path. */ | |
3391 | if (rt->rt6i_flags & RTF_CACHE) | |
3392 | return true; | |
3393 | ||
3394 | return false; | |
3395 | } | |
3396 | ||
3397 | static struct mlxsw_sp_rt6 *mlxsw_sp_rt6_create(struct rt6_info *rt) | |
3398 | { | |
3399 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
3400 | ||
3401 | mlxsw_sp_rt6 = kzalloc(sizeof(*mlxsw_sp_rt6), GFP_KERNEL); | |
3402 | if (!mlxsw_sp_rt6) | |
3403 | return ERR_PTR(-ENOMEM); | |
3404 | ||
3405 | /* In case of route replace, replaced route is deleted with | |
3406 | * no notification. Take reference to prevent accessing freed | |
3407 | * memory. | |
3408 | */ | |
3409 | mlxsw_sp_rt6->rt = rt; | |
3410 | rt6_hold(rt); | |
3411 | ||
3412 | return mlxsw_sp_rt6; | |
3413 | } | |
3414 | ||
3415 | #if IS_ENABLED(CONFIG_IPV6) | |
3416 | static void mlxsw_sp_rt6_release(struct rt6_info *rt) | |
3417 | { | |
3418 | rt6_release(rt); | |
3419 | } | |
3420 | #else | |
3421 | static void mlxsw_sp_rt6_release(struct rt6_info *rt) | |
3422 | { | |
3423 | } | |
3424 | #endif | |
3425 | ||
3426 | static void mlxsw_sp_rt6_destroy(struct mlxsw_sp_rt6 *mlxsw_sp_rt6) | |
3427 | { | |
3428 | mlxsw_sp_rt6_release(mlxsw_sp_rt6->rt); | |
3429 | kfree(mlxsw_sp_rt6); | |
3430 | } | |
3431 | ||
3432 | static bool mlxsw_sp_fib6_rt_can_mp(const struct rt6_info *rt) | |
3433 | { | |
3434 | /* RTF_CACHE routes are ignored */ | |
3435 | return (rt->rt6i_flags & (RTF_GATEWAY | RTF_ADDRCONF)) == RTF_GATEWAY; | |
3436 | } | |
3437 | ||
3438 | static struct rt6_info * | |
3439 | mlxsw_sp_fib6_entry_rt(const struct mlxsw_sp_fib6_entry *fib6_entry) | |
3440 | { | |
3441 | return list_first_entry(&fib6_entry->rt6_list, struct mlxsw_sp_rt6, | |
3442 | list)->rt; | |
3443 | } | |
3444 | ||
3445 | static struct mlxsw_sp_fib6_entry * | |
3446 | mlxsw_sp_fib6_node_mp_entry_find(const struct mlxsw_sp_fib_node *fib_node, | |
0a7fd1ac | 3447 | const struct rt6_info *nrt, bool replace) |
428b851f IS |
3448 | { |
3449 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
3450 | ||
0a7fd1ac | 3451 | if (!mlxsw_sp_fib6_rt_can_mp(nrt) || replace) |
428b851f IS |
3452 | return NULL; |
3453 | ||
3454 | list_for_each_entry(fib6_entry, &fib_node->entry_list, common.list) { | |
3455 | struct rt6_info *rt = mlxsw_sp_fib6_entry_rt(fib6_entry); | |
3456 | ||
3457 | /* RT6_TABLE_LOCAL and RT6_TABLE_MAIN share the same | |
3458 | * virtual router. | |
3459 | */ | |
3460 | if (rt->rt6i_table->tb6_id > nrt->rt6i_table->tb6_id) | |
3461 | continue; | |
3462 | if (rt->rt6i_table->tb6_id != nrt->rt6i_table->tb6_id) | |
3463 | break; | |
3464 | if (rt->rt6i_metric < nrt->rt6i_metric) | |
3465 | continue; | |
3466 | if (rt->rt6i_metric == nrt->rt6i_metric && | |
3467 | mlxsw_sp_fib6_rt_can_mp(rt)) | |
3468 | return fib6_entry; | |
3469 | if (rt->rt6i_metric > nrt->rt6i_metric) | |
3470 | break; | |
3471 | } | |
3472 | ||
3473 | return NULL; | |
3474 | } | |
3475 | ||
3476 | static struct mlxsw_sp_rt6 * | |
3477 | mlxsw_sp_fib6_entry_rt_find(const struct mlxsw_sp_fib6_entry *fib6_entry, | |
3478 | const struct rt6_info *rt) | |
3479 | { | |
3480 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
3481 | ||
3482 | list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { | |
3483 | if (mlxsw_sp_rt6->rt == rt) | |
3484 | return mlxsw_sp_rt6; | |
3485 | } | |
3486 | ||
3487 | return NULL; | |
3488 | } | |
3489 | ||
3490 | static int mlxsw_sp_nexthop6_init(struct mlxsw_sp *mlxsw_sp, | |
3491 | struct mlxsw_sp_nexthop_group *nh_grp, | |
3492 | struct mlxsw_sp_nexthop *nh, | |
3493 | const struct rt6_info *rt) | |
3494 | { | |
3495 | struct net_device *dev = rt->dst.dev; | |
3496 | struct mlxsw_sp_rif *rif; | |
3497 | int err; | |
3498 | ||
3499 | nh->nh_grp = nh_grp; | |
3500 | memcpy(&nh->gw_addr, &rt->rt6i_gateway, sizeof(nh->gw_addr)); | |
3501 | ||
3502 | if (!dev) | |
3503 | return 0; | |
e6f3b379 | 3504 | nh->ifindex = dev->ifindex; |
428b851f IS |
3505 | |
3506 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
3507 | if (!rif) | |
3508 | return 0; | |
3509 | mlxsw_sp_nexthop_rif_init(nh, rif); | |
3510 | ||
3511 | err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); | |
3512 | if (err) | |
3513 | goto err_nexthop_neigh_init; | |
3514 | ||
3515 | return 0; | |
3516 | ||
3517 | err_nexthop_neigh_init: | |
3518 | mlxsw_sp_nexthop_rif_fini(nh); | |
3519 | return err; | |
3520 | } | |
3521 | ||
3522 | static void mlxsw_sp_nexthop6_fini(struct mlxsw_sp *mlxsw_sp, | |
3523 | struct mlxsw_sp_nexthop *nh) | |
3524 | { | |
3525 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
3526 | mlxsw_sp_nexthop_rif_fini(nh); | |
3527 | } | |
3528 | ||
3529 | static struct mlxsw_sp_nexthop_group * | |
3530 | mlxsw_sp_nexthop6_group_create(struct mlxsw_sp *mlxsw_sp, | |
3531 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
3532 | { | |
3533 | struct mlxsw_sp_nexthop_group *nh_grp; | |
3534 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
3535 | struct mlxsw_sp_nexthop *nh; | |
3536 | size_t alloc_size; | |
3537 | int i = 0; | |
3538 | int err; | |
3539 | ||
3540 | alloc_size = sizeof(*nh_grp) + | |
3541 | fib6_entry->nrt6 * sizeof(struct mlxsw_sp_nexthop); | |
3542 | nh_grp = kzalloc(alloc_size, GFP_KERNEL); | |
3543 | if (!nh_grp) | |
3544 | return ERR_PTR(-ENOMEM); | |
3545 | INIT_LIST_HEAD(&nh_grp->fib_list); | |
3546 | #if IS_ENABLED(CONFIG_IPV6) | |
3547 | nh_grp->neigh_tbl = &nd_tbl; | |
3548 | #endif | |
3549 | mlxsw_sp_rt6 = list_first_entry(&fib6_entry->rt6_list, | |
3550 | struct mlxsw_sp_rt6, list); | |
3551 | nh_grp->gateway = !!(mlxsw_sp_rt6->rt->rt6i_flags & RTF_GATEWAY); | |
3552 | nh_grp->count = fib6_entry->nrt6; | |
3553 | for (i = 0; i < nh_grp->count; i++) { | |
3554 | struct rt6_info *rt = mlxsw_sp_rt6->rt; | |
3555 | ||
3556 | nh = &nh_grp->nexthops[i]; | |
3557 | err = mlxsw_sp_nexthop6_init(mlxsw_sp, nh_grp, nh, rt); | |
3558 | if (err) | |
3559 | goto err_nexthop6_init; | |
3560 | mlxsw_sp_rt6 = list_next_entry(mlxsw_sp_rt6, list); | |
3561 | } | |
e6f3b379 AS |
3562 | |
3563 | err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); | |
3564 | if (err) | |
3565 | goto err_nexthop_group_insert; | |
3566 | ||
428b851f IS |
3567 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
3568 | return nh_grp; | |
3569 | ||
e6f3b379 | 3570 | err_nexthop_group_insert: |
428b851f IS |
3571 | err_nexthop6_init: |
3572 | for (i--; i >= 0; i--) { | |
3573 | nh = &nh_grp->nexthops[i]; | |
3574 | mlxsw_sp_nexthop6_fini(mlxsw_sp, nh); | |
3575 | } | |
3576 | kfree(nh_grp); | |
3577 | return ERR_PTR(err); | |
3578 | } | |
3579 | ||
3580 | static void | |
3581 | mlxsw_sp_nexthop6_group_destroy(struct mlxsw_sp *mlxsw_sp, | |
3582 | struct mlxsw_sp_nexthop_group *nh_grp) | |
3583 | { | |
3584 | struct mlxsw_sp_nexthop *nh; | |
3585 | int i = nh_grp->count; | |
3586 | ||
e6f3b379 | 3587 | mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); |
428b851f IS |
3588 | for (i--; i >= 0; i--) { |
3589 | nh = &nh_grp->nexthops[i]; | |
3590 | mlxsw_sp_nexthop6_fini(mlxsw_sp, nh); | |
3591 | } | |
3592 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); | |
3593 | WARN_ON(nh_grp->adj_index_valid); | |
3594 | kfree(nh_grp); | |
3595 | } | |
3596 | ||
3597 | static int mlxsw_sp_nexthop6_group_get(struct mlxsw_sp *mlxsw_sp, | |
3598 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
3599 | { | |
3600 | struct mlxsw_sp_nexthop_group *nh_grp; | |
3601 | ||
e6f3b379 AS |
3602 | nh_grp = mlxsw_sp_nexthop6_group_lookup(mlxsw_sp, fib6_entry); |
3603 | if (!nh_grp) { | |
3604 | nh_grp = mlxsw_sp_nexthop6_group_create(mlxsw_sp, fib6_entry); | |
3605 | if (IS_ERR(nh_grp)) | |
3606 | return PTR_ERR(nh_grp); | |
3607 | } | |
428b851f IS |
3608 | |
3609 | list_add_tail(&fib6_entry->common.nexthop_group_node, | |
3610 | &nh_grp->fib_list); | |
3611 | fib6_entry->common.nh_group = nh_grp; | |
3612 | ||
3613 | return 0; | |
3614 | } | |
3615 | ||
3616 | static void mlxsw_sp_nexthop6_group_put(struct mlxsw_sp *mlxsw_sp, | |
3617 | struct mlxsw_sp_fib_entry *fib_entry) | |
3618 | { | |
3619 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
3620 | ||
3621 | list_del(&fib_entry->nexthop_group_node); | |
3622 | if (!list_empty(&nh_grp->fib_list)) | |
3623 | return; | |
3624 | mlxsw_sp_nexthop6_group_destroy(mlxsw_sp, nh_grp); | |
3625 | } | |
3626 | ||
3627 | static int | |
3628 | mlxsw_sp_nexthop6_group_update(struct mlxsw_sp *mlxsw_sp, | |
3629 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
3630 | { | |
3631 | struct mlxsw_sp_nexthop_group *old_nh_grp = fib6_entry->common.nh_group; | |
3632 | int err; | |
3633 | ||
3634 | fib6_entry->common.nh_group = NULL; | |
3635 | list_del(&fib6_entry->common.nexthop_group_node); | |
3636 | ||
3637 | err = mlxsw_sp_nexthop6_group_get(mlxsw_sp, fib6_entry); | |
3638 | if (err) | |
3639 | goto err_nexthop6_group_get; | |
3640 | ||
3641 | /* In case this entry is offloaded, then the adjacency index | |
3642 | * currently associated with it in the device's table is that | |
3643 | * of the old group. Start using the new one instead. | |
3644 | */ | |
3645 | err = mlxsw_sp_fib_node_entry_add(mlxsw_sp, &fib6_entry->common); | |
3646 | if (err) | |
3647 | goto err_fib_node_entry_add; | |
3648 | ||
3649 | if (list_empty(&old_nh_grp->fib_list)) | |
3650 | mlxsw_sp_nexthop6_group_destroy(mlxsw_sp, old_nh_grp); | |
3651 | ||
3652 | return 0; | |
3653 | ||
3654 | err_fib_node_entry_add: | |
3655 | mlxsw_sp_nexthop6_group_put(mlxsw_sp, &fib6_entry->common); | |
3656 | err_nexthop6_group_get: | |
3657 | list_add_tail(&fib6_entry->common.nexthop_group_node, | |
3658 | &old_nh_grp->fib_list); | |
3659 | fib6_entry->common.nh_group = old_nh_grp; | |
3660 | return err; | |
3661 | } | |
3662 | ||
3663 | static int | |
3664 | mlxsw_sp_fib6_entry_nexthop_add(struct mlxsw_sp *mlxsw_sp, | |
3665 | struct mlxsw_sp_fib6_entry *fib6_entry, | |
3666 | struct rt6_info *rt) | |
3667 | { | |
3668 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
3669 | int err; | |
3670 | ||
3671 | mlxsw_sp_rt6 = mlxsw_sp_rt6_create(rt); | |
3672 | if (IS_ERR(mlxsw_sp_rt6)) | |
3673 | return PTR_ERR(mlxsw_sp_rt6); | |
3674 | ||
3675 | list_add_tail(&mlxsw_sp_rt6->list, &fib6_entry->rt6_list); | |
3676 | fib6_entry->nrt6++; | |
3677 | ||
3678 | err = mlxsw_sp_nexthop6_group_update(mlxsw_sp, fib6_entry); | |
3679 | if (err) | |
3680 | goto err_nexthop6_group_update; | |
3681 | ||
3682 | return 0; | |
3683 | ||
3684 | err_nexthop6_group_update: | |
3685 | fib6_entry->nrt6--; | |
3686 | list_del(&mlxsw_sp_rt6->list); | |
3687 | mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); | |
3688 | return err; | |
3689 | } | |
3690 | ||
3691 | static void | |
3692 | mlxsw_sp_fib6_entry_nexthop_del(struct mlxsw_sp *mlxsw_sp, | |
3693 | struct mlxsw_sp_fib6_entry *fib6_entry, | |
3694 | struct rt6_info *rt) | |
3695 | { | |
3696 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
3697 | ||
3698 | mlxsw_sp_rt6 = mlxsw_sp_fib6_entry_rt_find(fib6_entry, rt); | |
3699 | if (WARN_ON(!mlxsw_sp_rt6)) | |
3700 | return; | |
3701 | ||
3702 | fib6_entry->nrt6--; | |
3703 | list_del(&mlxsw_sp_rt6->list); | |
3704 | mlxsw_sp_nexthop6_group_update(mlxsw_sp, fib6_entry); | |
3705 | mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); | |
3706 | } | |
3707 | ||
3708 | static void mlxsw_sp_fib6_entry_type_set(struct mlxsw_sp_fib_entry *fib_entry, | |
3709 | const struct rt6_info *rt) | |
3710 | { | |
3711 | /* Packets hitting RTF_REJECT routes need to be discarded by the | |
3712 | * stack. We can rely on their destination device not having a | |
3713 | * RIF (it's the loopback device) and can thus use action type | |
3714 | * local, which will cause them to be trapped with a lower | |
3715 | * priority than packets that need to be locally received. | |
3716 | */ | |
d3b6d377 | 3717 | if (rt->rt6i_flags & (RTF_LOCAL | RTF_ANYCAST)) |
428b851f IS |
3718 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; |
3719 | else if (rt->rt6i_flags & RTF_REJECT) | |
3720 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
3721 | else if (rt->rt6i_flags & RTF_GATEWAY) | |
3722 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; | |
3723 | else | |
3724 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
3725 | } | |
3726 | ||
3727 | static void | |
3728 | mlxsw_sp_fib6_entry_rt_destroy_all(struct mlxsw_sp_fib6_entry *fib6_entry) | |
3729 | { | |
3730 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6, *tmp; | |
3731 | ||
3732 | list_for_each_entry_safe(mlxsw_sp_rt6, tmp, &fib6_entry->rt6_list, | |
3733 | list) { | |
3734 | fib6_entry->nrt6--; | |
3735 | list_del(&mlxsw_sp_rt6->list); | |
3736 | mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); | |
3737 | } | |
3738 | } | |
3739 | ||
3740 | static struct mlxsw_sp_fib6_entry * | |
3741 | mlxsw_sp_fib6_entry_create(struct mlxsw_sp *mlxsw_sp, | |
3742 | struct mlxsw_sp_fib_node *fib_node, | |
3743 | struct rt6_info *rt) | |
3744 | { | |
3745 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
3746 | struct mlxsw_sp_fib_entry *fib_entry; | |
3747 | struct mlxsw_sp_rt6 *mlxsw_sp_rt6; | |
3748 | int err; | |
3749 | ||
3750 | fib6_entry = kzalloc(sizeof(*fib6_entry), GFP_KERNEL); | |
3751 | if (!fib6_entry) | |
3752 | return ERR_PTR(-ENOMEM); | |
3753 | fib_entry = &fib6_entry->common; | |
3754 | ||
3755 | mlxsw_sp_rt6 = mlxsw_sp_rt6_create(rt); | |
3756 | if (IS_ERR(mlxsw_sp_rt6)) { | |
3757 | err = PTR_ERR(mlxsw_sp_rt6); | |
3758 | goto err_rt6_create; | |
3759 | } | |
3760 | ||
3761 | mlxsw_sp_fib6_entry_type_set(fib_entry, mlxsw_sp_rt6->rt); | |
3762 | ||
3763 | INIT_LIST_HEAD(&fib6_entry->rt6_list); | |
3764 | list_add_tail(&mlxsw_sp_rt6->list, &fib6_entry->rt6_list); | |
3765 | fib6_entry->nrt6 = 1; | |
3766 | err = mlxsw_sp_nexthop6_group_get(mlxsw_sp, fib6_entry); | |
3767 | if (err) | |
3768 | goto err_nexthop6_group_get; | |
3769 | ||
3770 | fib_entry->fib_node = fib_node; | |
3771 | ||
3772 | return fib6_entry; | |
3773 | ||
3774 | err_nexthop6_group_get: | |
3775 | list_del(&mlxsw_sp_rt6->list); | |
3776 | mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); | |
3777 | err_rt6_create: | |
3778 | kfree(fib6_entry); | |
3779 | return ERR_PTR(err); | |
3780 | } | |
3781 | ||
3782 | static void mlxsw_sp_fib6_entry_destroy(struct mlxsw_sp *mlxsw_sp, | |
3783 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
3784 | { | |
3785 | mlxsw_sp_nexthop6_group_put(mlxsw_sp, &fib6_entry->common); | |
3786 | mlxsw_sp_fib6_entry_rt_destroy_all(fib6_entry); | |
3787 | WARN_ON(fib6_entry->nrt6); | |
3788 | kfree(fib6_entry); | |
3789 | } | |
3790 | ||
3791 | static struct mlxsw_sp_fib6_entry * | |
3792 | mlxsw_sp_fib6_node_entry_find(const struct mlxsw_sp_fib_node *fib_node, | |
0a7fd1ac | 3793 | const struct rt6_info *nrt, bool replace) |
428b851f | 3794 | { |
0a7fd1ac | 3795 | struct mlxsw_sp_fib6_entry *fib6_entry, *fallback = NULL; |
428b851f IS |
3796 | |
3797 | list_for_each_entry(fib6_entry, &fib_node->entry_list, common.list) { | |
3798 | struct rt6_info *rt = mlxsw_sp_fib6_entry_rt(fib6_entry); | |
3799 | ||
3800 | if (rt->rt6i_table->tb6_id > nrt->rt6i_table->tb6_id) | |
3801 | continue; | |
3802 | if (rt->rt6i_table->tb6_id != nrt->rt6i_table->tb6_id) | |
3803 | break; | |
0a7fd1ac IS |
3804 | if (replace && rt->rt6i_metric == nrt->rt6i_metric) { |
3805 | if (mlxsw_sp_fib6_rt_can_mp(rt) == | |
3806 | mlxsw_sp_fib6_rt_can_mp(nrt)) | |
3807 | return fib6_entry; | |
3808 | if (mlxsw_sp_fib6_rt_can_mp(nrt)) | |
3809 | fallback = fallback ?: fib6_entry; | |
3810 | } | |
428b851f | 3811 | if (rt->rt6i_metric > nrt->rt6i_metric) |
0a7fd1ac | 3812 | return fallback ?: fib6_entry; |
428b851f IS |
3813 | } |
3814 | ||
0a7fd1ac | 3815 | return fallback; |
428b851f IS |
3816 | } |
3817 | ||
3818 | static int | |
0a7fd1ac IS |
3819 | mlxsw_sp_fib6_node_list_insert(struct mlxsw_sp_fib6_entry *new6_entry, |
3820 | bool replace) | |
428b851f IS |
3821 | { |
3822 | struct mlxsw_sp_fib_node *fib_node = new6_entry->common.fib_node; | |
3823 | struct rt6_info *nrt = mlxsw_sp_fib6_entry_rt(new6_entry); | |
3824 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
3825 | ||
0a7fd1ac IS |
3826 | fib6_entry = mlxsw_sp_fib6_node_entry_find(fib_node, nrt, replace); |
3827 | ||
3828 | if (replace && WARN_ON(!fib6_entry)) | |
3829 | return -EINVAL; | |
428b851f IS |
3830 | |
3831 | if (fib6_entry) { | |
3832 | list_add_tail(&new6_entry->common.list, | |
3833 | &fib6_entry->common.list); | |
3834 | } else { | |
3835 | struct mlxsw_sp_fib6_entry *last; | |
3836 | ||
3837 | list_for_each_entry(last, &fib_node->entry_list, common.list) { | |
3838 | struct rt6_info *rt = mlxsw_sp_fib6_entry_rt(last); | |
3839 | ||
3840 | if (nrt->rt6i_table->tb6_id > rt->rt6i_table->tb6_id) | |
3841 | break; | |
3842 | fib6_entry = last; | |
3843 | } | |
3844 | ||
3845 | if (fib6_entry) | |
3846 | list_add(&new6_entry->common.list, | |
3847 | &fib6_entry->common.list); | |
3848 | else | |
3849 | list_add(&new6_entry->common.list, | |
3850 | &fib_node->entry_list); | |
3851 | } | |
3852 | ||
3853 | return 0; | |
3854 | } | |
3855 | ||
3856 | static void | |
3857 | mlxsw_sp_fib6_node_list_remove(struct mlxsw_sp_fib6_entry *fib6_entry) | |
3858 | { | |
3859 | list_del(&fib6_entry->common.list); | |
3860 | } | |
3861 | ||
3862 | static int mlxsw_sp_fib6_node_entry_link(struct mlxsw_sp *mlxsw_sp, | |
0a7fd1ac IS |
3863 | struct mlxsw_sp_fib6_entry *fib6_entry, |
3864 | bool replace) | |
428b851f IS |
3865 | { |
3866 | int err; | |
3867 | ||
0a7fd1ac | 3868 | err = mlxsw_sp_fib6_node_list_insert(fib6_entry, replace); |
428b851f IS |
3869 | if (err) |
3870 | return err; | |
3871 | ||
3872 | err = mlxsw_sp_fib_node_entry_add(mlxsw_sp, &fib6_entry->common); | |
3873 | if (err) | |
3874 | goto err_fib_node_entry_add; | |
3875 | ||
3876 | return 0; | |
3877 | ||
3878 | err_fib_node_entry_add: | |
3879 | mlxsw_sp_fib6_node_list_remove(fib6_entry); | |
3880 | return err; | |
3881 | } | |
3882 | ||
3883 | static void | |
3884 | mlxsw_sp_fib6_node_entry_unlink(struct mlxsw_sp *mlxsw_sp, | |
3885 | struct mlxsw_sp_fib6_entry *fib6_entry) | |
3886 | { | |
3887 | mlxsw_sp_fib_node_entry_del(mlxsw_sp, &fib6_entry->common); | |
3888 | mlxsw_sp_fib6_node_list_remove(fib6_entry); | |
3889 | } | |
3890 | ||
3891 | static struct mlxsw_sp_fib6_entry * | |
3892 | mlxsw_sp_fib6_entry_lookup(struct mlxsw_sp *mlxsw_sp, | |
3893 | const struct rt6_info *rt) | |
3894 | { | |
3895 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
3896 | struct mlxsw_sp_fib_node *fib_node; | |
3897 | struct mlxsw_sp_fib *fib; | |
3898 | struct mlxsw_sp_vr *vr; | |
3899 | ||
3900 | vr = mlxsw_sp_vr_find(mlxsw_sp, rt->rt6i_table->tb6_id); | |
3901 | if (!vr) | |
3902 | return NULL; | |
3903 | fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV6); | |
3904 | ||
3905 | fib_node = mlxsw_sp_fib_node_lookup(fib, &rt->rt6i_dst.addr, | |
3906 | sizeof(rt->rt6i_dst.addr), | |
3907 | rt->rt6i_dst.plen); | |
3908 | if (!fib_node) | |
3909 | return NULL; | |
3910 | ||
3911 | list_for_each_entry(fib6_entry, &fib_node->entry_list, common.list) { | |
3912 | struct rt6_info *iter_rt = mlxsw_sp_fib6_entry_rt(fib6_entry); | |
3913 | ||
3914 | if (rt->rt6i_table->tb6_id == iter_rt->rt6i_table->tb6_id && | |
3915 | rt->rt6i_metric == iter_rt->rt6i_metric && | |
3916 | mlxsw_sp_fib6_entry_rt_find(fib6_entry, rt)) | |
3917 | return fib6_entry; | |
3918 | } | |
3919 | ||
3920 | return NULL; | |
3921 | } | |
3922 | ||
0a7fd1ac IS |
3923 | static void mlxsw_sp_fib6_entry_replace(struct mlxsw_sp *mlxsw_sp, |
3924 | struct mlxsw_sp_fib6_entry *fib6_entry, | |
3925 | bool replace) | |
3926 | { | |
3927 | struct mlxsw_sp_fib_node *fib_node = fib6_entry->common.fib_node; | |
3928 | struct mlxsw_sp_fib6_entry *replaced; | |
3929 | ||
3930 | if (!replace) | |
3931 | return; | |
3932 | ||
3933 | replaced = list_next_entry(fib6_entry, common.list); | |
3934 | ||
3935 | mlxsw_sp_fib6_node_entry_unlink(mlxsw_sp, replaced); | |
3936 | mlxsw_sp_fib6_entry_destroy(mlxsw_sp, replaced); | |
3937 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); | |
3938 | } | |
3939 | ||
428b851f | 3940 | static int mlxsw_sp_router_fib6_add(struct mlxsw_sp *mlxsw_sp, |
0a7fd1ac | 3941 | struct rt6_info *rt, bool replace) |
428b851f IS |
3942 | { |
3943 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
3944 | struct mlxsw_sp_fib_node *fib_node; | |
3945 | int err; | |
3946 | ||
3947 | if (mlxsw_sp->router->aborted) | |
3948 | return 0; | |
3949 | ||
f36f5ac6 IS |
3950 | if (rt->rt6i_src.plen) |
3951 | return -EINVAL; | |
3952 | ||
428b851f IS |
3953 | if (mlxsw_sp_fib6_rt_should_ignore(rt)) |
3954 | return 0; | |
3955 | ||
3956 | fib_node = mlxsw_sp_fib_node_get(mlxsw_sp, rt->rt6i_table->tb6_id, | |
3957 | &rt->rt6i_dst.addr, | |
3958 | sizeof(rt->rt6i_dst.addr), | |
3959 | rt->rt6i_dst.plen, | |
3960 | MLXSW_SP_L3_PROTO_IPV6); | |
3961 | if (IS_ERR(fib_node)) | |
3962 | return PTR_ERR(fib_node); | |
3963 | ||
3964 | /* Before creating a new entry, try to append route to an existing | |
3965 | * multipath entry. | |
3966 | */ | |
0a7fd1ac | 3967 | fib6_entry = mlxsw_sp_fib6_node_mp_entry_find(fib_node, rt, replace); |
428b851f IS |
3968 | if (fib6_entry) { |
3969 | err = mlxsw_sp_fib6_entry_nexthop_add(mlxsw_sp, fib6_entry, rt); | |
3970 | if (err) | |
3971 | goto err_fib6_entry_nexthop_add; | |
3972 | return 0; | |
3973 | } | |
3974 | ||
3975 | fib6_entry = mlxsw_sp_fib6_entry_create(mlxsw_sp, fib_node, rt); | |
3976 | if (IS_ERR(fib6_entry)) { | |
3977 | err = PTR_ERR(fib6_entry); | |
3978 | goto err_fib6_entry_create; | |
3979 | } | |
3980 | ||
0a7fd1ac | 3981 | err = mlxsw_sp_fib6_node_entry_link(mlxsw_sp, fib6_entry, replace); |
428b851f IS |
3982 | if (err) |
3983 | goto err_fib6_node_entry_link; | |
3984 | ||
0a7fd1ac IS |
3985 | mlxsw_sp_fib6_entry_replace(mlxsw_sp, fib6_entry, replace); |
3986 | ||
428b851f IS |
3987 | return 0; |
3988 | ||
3989 | err_fib6_node_entry_link: | |
3990 | mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); | |
3991 | err_fib6_entry_create: | |
3992 | err_fib6_entry_nexthop_add: | |
3993 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); | |
3994 | return err; | |
3995 | } | |
3996 | ||
3997 | static void mlxsw_sp_router_fib6_del(struct mlxsw_sp *mlxsw_sp, | |
3998 | struct rt6_info *rt) | |
3999 | { | |
4000 | struct mlxsw_sp_fib6_entry *fib6_entry; | |
4001 | struct mlxsw_sp_fib_node *fib_node; | |
4002 | ||
4003 | if (mlxsw_sp->router->aborted) | |
4004 | return; | |
4005 | ||
4006 | if (mlxsw_sp_fib6_rt_should_ignore(rt)) | |
4007 | return; | |
4008 | ||
4009 | fib6_entry = mlxsw_sp_fib6_entry_lookup(mlxsw_sp, rt); | |
4010 | if (WARN_ON(!fib6_entry)) | |
4011 | return; | |
4012 | ||
4013 | /* If route is part of a multipath entry, but not the last one | |
4014 | * removed, then only reduce its nexthop group. | |
4015 | */ | |
4016 | if (!list_is_singular(&fib6_entry->rt6_list)) { | |
4017 | mlxsw_sp_fib6_entry_nexthop_del(mlxsw_sp, fib6_entry, rt); | |
4018 | return; | |
4019 | } | |
4020 | ||
4021 | fib_node = fib6_entry->common.fib_node; | |
4022 | ||
4023 | mlxsw_sp_fib6_node_entry_unlink(mlxsw_sp, fib6_entry); | |
4024 | mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); | |
4025 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); | |
4026 | } | |
4027 | ||
bc65a8a4 IS |
4028 | static int __mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp, |
4029 | enum mlxsw_reg_ralxx_protocol proto, | |
4030 | u8 tree_id) | |
b45f64d1 JP |
4031 | { |
4032 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
4033 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
b5d90e6d | 4034 | int i, err; |
b45f64d1 | 4035 | |
bc65a8a4 | 4036 | mlxsw_reg_ralta_pack(ralta_pl, true, proto, tree_id); |
b45f64d1 JP |
4037 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
4038 | if (err) | |
4039 | return err; | |
4040 | ||
bc65a8a4 | 4041 | mlxsw_reg_ralst_pack(ralst_pl, 0xff, tree_id); |
b45f64d1 JP |
4042 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); |
4043 | if (err) | |
4044 | return err; | |
4045 | ||
b5d90e6d | 4046 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 4047 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; |
b5d90e6d IS |
4048 | char raltb_pl[MLXSW_REG_RALTB_LEN]; |
4049 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
b45f64d1 | 4050 | |
bc65a8a4 | 4051 | mlxsw_reg_raltb_pack(raltb_pl, vr->id, proto, tree_id); |
b5d90e6d IS |
4052 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), |
4053 | raltb_pl); | |
4054 | if (err) | |
4055 | return err; | |
4056 | ||
bc65a8a4 IS |
4057 | mlxsw_reg_ralue_pack(ralue_pl, proto, |
4058 | MLXSW_REG_RALUE_OP_WRITE_WRITE, vr->id, 0); | |
b5d90e6d IS |
4059 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); |
4060 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), | |
4061 | ralue_pl); | |
4062 | if (err) | |
4063 | return err; | |
4064 | } | |
4065 | ||
4066 | return 0; | |
b45f64d1 JP |
4067 | } |
4068 | ||
bc65a8a4 IS |
4069 | static int mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp) |
4070 | { | |
4071 | enum mlxsw_reg_ralxx_protocol proto = MLXSW_REG_RALXX_PROTOCOL_IPV4; | |
4072 | int err; | |
4073 | ||
4074 | err = __mlxsw_sp_router_set_abort_trap(mlxsw_sp, proto, | |
4075 | MLXSW_SP_LPM_TREE_MIN); | |
4076 | if (err) | |
4077 | return err; | |
4078 | ||
4079 | proto = MLXSW_REG_RALXX_PROTOCOL_IPV6; | |
4080 | return __mlxsw_sp_router_set_abort_trap(mlxsw_sp, proto, | |
4081 | MLXSW_SP_LPM_TREE_MIN + 1); | |
4082 | } | |
4083 | ||
9aecce1c IS |
4084 | static void mlxsw_sp_fib4_node_flush(struct mlxsw_sp *mlxsw_sp, |
4085 | struct mlxsw_sp_fib_node *fib_node) | |
4086 | { | |
4f1c7f1f | 4087 | struct mlxsw_sp_fib4_entry *fib4_entry, *tmp; |
9aecce1c | 4088 | |
4f1c7f1f IS |
4089 | list_for_each_entry_safe(fib4_entry, tmp, &fib_node->entry_list, |
4090 | common.list) { | |
4091 | bool do_break = &tmp->common.list == &fib_node->entry_list; | |
9aecce1c | 4092 | |
4f1c7f1f IS |
4093 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib4_entry); |
4094 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); | |
731ea1ca | 4095 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); |
9aecce1c IS |
4096 | /* Break when entry list is empty and node was freed. |
4097 | * Otherwise, we'll access freed memory in the next | |
4098 | * iteration. | |
4099 | */ | |
4100 | if (do_break) | |
4101 | break; | |
4102 | } | |
4103 | } | |
4104 | ||
428b851f IS |
4105 | static void mlxsw_sp_fib6_node_flush(struct mlxsw_sp *mlxsw_sp, |
4106 | struct mlxsw_sp_fib_node *fib_node) | |
4107 | { | |
4108 | struct mlxsw_sp_fib6_entry *fib6_entry, *tmp; | |
4109 | ||
4110 | list_for_each_entry_safe(fib6_entry, tmp, &fib_node->entry_list, | |
4111 | common.list) { | |
4112 | bool do_break = &tmp->common.list == &fib_node->entry_list; | |
4113 | ||
4114 | mlxsw_sp_fib6_node_entry_unlink(mlxsw_sp, fib6_entry); | |
4115 | mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); | |
4116 | mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); | |
4117 | if (do_break) | |
4118 | break; | |
4119 | } | |
4120 | } | |
4121 | ||
9aecce1c IS |
4122 | static void mlxsw_sp_fib_node_flush(struct mlxsw_sp *mlxsw_sp, |
4123 | struct mlxsw_sp_fib_node *fib_node) | |
4124 | { | |
76610ebb | 4125 | switch (fib_node->fib->proto) { |
9aecce1c IS |
4126 | case MLXSW_SP_L3_PROTO_IPV4: |
4127 | mlxsw_sp_fib4_node_flush(mlxsw_sp, fib_node); | |
4128 | break; | |
4129 | case MLXSW_SP_L3_PROTO_IPV6: | |
428b851f | 4130 | mlxsw_sp_fib6_node_flush(mlxsw_sp, fib_node); |
9aecce1c IS |
4131 | break; |
4132 | } | |
4133 | } | |
4134 | ||
76610ebb IS |
4135 | static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp, |
4136 | struct mlxsw_sp_vr *vr, | |
4137 | enum mlxsw_sp_l3proto proto) | |
b45f64d1 | 4138 | { |
76610ebb | 4139 | struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); |
9aecce1c | 4140 | struct mlxsw_sp_fib_node *fib_node, *tmp; |
76610ebb IS |
4141 | |
4142 | list_for_each_entry_safe(fib_node, tmp, &fib->node_list, list) { | |
4143 | bool do_break = &tmp->list == &fib->node_list; | |
4144 | ||
4145 | mlxsw_sp_fib_node_flush(mlxsw_sp, fib_node); | |
4146 | if (do_break) | |
4147 | break; | |
4148 | } | |
4149 | } | |
4150 | ||
4151 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp) | |
4152 | { | |
b45f64d1 | 4153 | int i; |
b45f64d1 | 4154 | |
c1a38311 | 4155 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 4156 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; |
ac571de9 | 4157 | |
76610ebb | 4158 | if (!mlxsw_sp_vr_is_used(vr)) |
b45f64d1 | 4159 | continue; |
76610ebb | 4160 | mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4); |
a3d9bc50 IS |
4161 | |
4162 | /* If virtual router was only used for IPv4, then it's no | |
4163 | * longer used. | |
4164 | */ | |
4165 | if (!mlxsw_sp_vr_is_used(vr)) | |
4166 | continue; | |
4167 | mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV6); | |
b45f64d1 | 4168 | } |
ac571de9 IS |
4169 | } |
4170 | ||
bc65a8a4 | 4171 | static void mlxsw_sp_router_fib_abort(struct mlxsw_sp *mlxsw_sp) |
ac571de9 IS |
4172 | { |
4173 | int err; | |
4174 | ||
9011b677 | 4175 | if (mlxsw_sp->router->aborted) |
d331d303 IS |
4176 | return; |
4177 | dev_warn(mlxsw_sp->bus_info->dev, "FIB abort triggered. Note that FIB entries are no longer being offloaded to this device.\n"); | |
ac571de9 | 4178 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
9011b677 | 4179 | mlxsw_sp->router->aborted = true; |
b45f64d1 JP |
4180 | err = mlxsw_sp_router_set_abort_trap(mlxsw_sp); |
4181 | if (err) | |
4182 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set abort trap.\n"); | |
4183 | } | |
4184 | ||
3057224e | 4185 | struct mlxsw_sp_fib_event_work { |
a0e4761d | 4186 | struct work_struct work; |
ad178c8e | 4187 | union { |
428b851f | 4188 | struct fib6_entry_notifier_info fen6_info; |
ad178c8e | 4189 | struct fib_entry_notifier_info fen_info; |
5d7bfd14 | 4190 | struct fib_rule_notifier_info fr_info; |
ad178c8e IS |
4191 | struct fib_nh_notifier_info fnh_info; |
4192 | }; | |
3057224e IS |
4193 | struct mlxsw_sp *mlxsw_sp; |
4194 | unsigned long event; | |
4195 | }; | |
4196 | ||
66a5763a | 4197 | static void mlxsw_sp_router_fib4_event_work(struct work_struct *work) |
b45f64d1 | 4198 | { |
3057224e | 4199 | struct mlxsw_sp_fib_event_work *fib_work = |
a0e4761d | 4200 | container_of(work, struct mlxsw_sp_fib_event_work, work); |
3057224e | 4201 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; |
5d7bfd14 | 4202 | struct fib_rule *rule; |
599cf8f9 | 4203 | bool replace, append; |
b45f64d1 JP |
4204 | int err; |
4205 | ||
3057224e IS |
4206 | /* Protect internal structures from changes */ |
4207 | rtnl_lock(); | |
4208 | switch (fib_work->event) { | |
599cf8f9 | 4209 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 4210 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
b45f64d1 | 4211 | case FIB_EVENT_ENTRY_ADD: |
599cf8f9 | 4212 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; |
4283bce5 IS |
4213 | append = fib_work->event == FIB_EVENT_ENTRY_APPEND; |
4214 | err = mlxsw_sp_router_fib4_add(mlxsw_sp, &fib_work->fen_info, | |
599cf8f9 | 4215 | replace, append); |
b45f64d1 | 4216 | if (err) |
bc65a8a4 | 4217 | mlxsw_sp_router_fib_abort(mlxsw_sp); |
3057224e | 4218 | fib_info_put(fib_work->fen_info.fi); |
b45f64d1 JP |
4219 | break; |
4220 | case FIB_EVENT_ENTRY_DEL: | |
3057224e IS |
4221 | mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info); |
4222 | fib_info_put(fib_work->fen_info.fi); | |
b45f64d1 JP |
4223 | break; |
4224 | case FIB_EVENT_RULE_ADD: /* fall through */ | |
4225 | case FIB_EVENT_RULE_DEL: | |
5d7bfd14 | 4226 | rule = fib_work->fr_info.rule; |
c7f6e665 | 4227 | if (!fib4_rule_default(rule) && !rule->l3mdev) |
bc65a8a4 | 4228 | mlxsw_sp_router_fib_abort(mlxsw_sp); |
5d7bfd14 | 4229 | fib_rule_put(rule); |
b45f64d1 | 4230 | break; |
ad178c8e IS |
4231 | case FIB_EVENT_NH_ADD: /* fall through */ |
4232 | case FIB_EVENT_NH_DEL: | |
0e6ea2a4 IS |
4233 | mlxsw_sp_nexthop4_event(mlxsw_sp, fib_work->event, |
4234 | fib_work->fnh_info.fib_nh); | |
ad178c8e IS |
4235 | fib_info_put(fib_work->fnh_info.fib_nh->nh_parent); |
4236 | break; | |
b45f64d1 | 4237 | } |
3057224e IS |
4238 | rtnl_unlock(); |
4239 | kfree(fib_work); | |
4240 | } | |
4241 | ||
66a5763a IS |
4242 | static void mlxsw_sp_router_fib6_event_work(struct work_struct *work) |
4243 | { | |
583419fd IS |
4244 | struct mlxsw_sp_fib_event_work *fib_work = |
4245 | container_of(work, struct mlxsw_sp_fib_event_work, work); | |
4246 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; | |
4247 | struct fib_rule *rule; | |
0a7fd1ac | 4248 | bool replace; |
428b851f | 4249 | int err; |
583419fd IS |
4250 | |
4251 | rtnl_lock(); | |
4252 | switch (fib_work->event) { | |
0a7fd1ac | 4253 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
428b851f | 4254 | case FIB_EVENT_ENTRY_ADD: |
0a7fd1ac | 4255 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; |
428b851f | 4256 | err = mlxsw_sp_router_fib6_add(mlxsw_sp, |
0a7fd1ac | 4257 | fib_work->fen6_info.rt, replace); |
428b851f IS |
4258 | if (err) |
4259 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
4260 | mlxsw_sp_rt6_release(fib_work->fen6_info.rt); | |
4261 | break; | |
4262 | case FIB_EVENT_ENTRY_DEL: | |
4263 | mlxsw_sp_router_fib6_del(mlxsw_sp, fib_work->fen6_info.rt); | |
4264 | mlxsw_sp_rt6_release(fib_work->fen6_info.rt); | |
4265 | break; | |
583419fd IS |
4266 | case FIB_EVENT_RULE_ADD: /* fall through */ |
4267 | case FIB_EVENT_RULE_DEL: | |
4268 | rule = fib_work->fr_info.rule; | |
4269 | if (!fib6_rule_default(rule) && !rule->l3mdev) | |
4270 | mlxsw_sp_router_fib_abort(mlxsw_sp); | |
4271 | fib_rule_put(rule); | |
4272 | break; | |
4273 | } | |
4274 | rtnl_unlock(); | |
4275 | kfree(fib_work); | |
66a5763a IS |
4276 | } |
4277 | ||
4278 | static void mlxsw_sp_router_fib4_event(struct mlxsw_sp_fib_event_work *fib_work, | |
4279 | struct fib_notifier_info *info) | |
4280 | { | |
4281 | switch (fib_work->event) { | |
4282 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ | |
4283 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ | |
4284 | case FIB_EVENT_ENTRY_ADD: /* fall through */ | |
4285 | case FIB_EVENT_ENTRY_DEL: | |
4286 | memcpy(&fib_work->fen_info, info, sizeof(fib_work->fen_info)); | |
4287 | /* Take referece on fib_info to prevent it from being | |
4288 | * freed while work is queued. Release it afterwards. | |
4289 | */ | |
4290 | fib_info_hold(fib_work->fen_info.fi); | |
4291 | break; | |
4292 | case FIB_EVENT_RULE_ADD: /* fall through */ | |
4293 | case FIB_EVENT_RULE_DEL: | |
4294 | memcpy(&fib_work->fr_info, info, sizeof(fib_work->fr_info)); | |
4295 | fib_rule_get(fib_work->fr_info.rule); | |
4296 | break; | |
4297 | case FIB_EVENT_NH_ADD: /* fall through */ | |
4298 | case FIB_EVENT_NH_DEL: | |
4299 | memcpy(&fib_work->fnh_info, info, sizeof(fib_work->fnh_info)); | |
4300 | fib_info_hold(fib_work->fnh_info.fib_nh->nh_parent); | |
4301 | break; | |
4302 | } | |
4303 | } | |
4304 | ||
4305 | static void mlxsw_sp_router_fib6_event(struct mlxsw_sp_fib_event_work *fib_work, | |
4306 | struct fib_notifier_info *info) | |
4307 | { | |
583419fd | 4308 | switch (fib_work->event) { |
0a7fd1ac | 4309 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
428b851f IS |
4310 | case FIB_EVENT_ENTRY_ADD: /* fall through */ |
4311 | case FIB_EVENT_ENTRY_DEL: | |
4312 | memcpy(&fib_work->fen6_info, info, sizeof(fib_work->fen6_info)); | |
4313 | rt6_hold(fib_work->fen6_info.rt); | |
4314 | break; | |
583419fd IS |
4315 | case FIB_EVENT_RULE_ADD: /* fall through */ |
4316 | case FIB_EVENT_RULE_DEL: | |
4317 | memcpy(&fib_work->fr_info, info, sizeof(fib_work->fr_info)); | |
4318 | fib_rule_get(fib_work->fr_info.rule); | |
4319 | break; | |
4320 | } | |
66a5763a IS |
4321 | } |
4322 | ||
3057224e IS |
4323 | /* Called with rcu_read_lock() */ |
4324 | static int mlxsw_sp_router_fib_event(struct notifier_block *nb, | |
4325 | unsigned long event, void *ptr) | |
4326 | { | |
3057224e IS |
4327 | struct mlxsw_sp_fib_event_work *fib_work; |
4328 | struct fib_notifier_info *info = ptr; | |
7e39d115 | 4329 | struct mlxsw_sp_router *router; |
3057224e | 4330 | |
65e65ec1 | 4331 | if (!net_eq(info->net, &init_net)) |
3057224e IS |
4332 | return NOTIFY_DONE; |
4333 | ||
4334 | fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC); | |
4335 | if (WARN_ON(!fib_work)) | |
4336 | return NOTIFY_BAD; | |
4337 | ||
7e39d115 IS |
4338 | router = container_of(nb, struct mlxsw_sp_router, fib_nb); |
4339 | fib_work->mlxsw_sp = router->mlxsw_sp; | |
3057224e IS |
4340 | fib_work->event = event; |
4341 | ||
66a5763a IS |
4342 | switch (info->family) { |
4343 | case AF_INET: | |
4344 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fib4_event_work); | |
4345 | mlxsw_sp_router_fib4_event(fib_work, info); | |
3057224e | 4346 | break; |
66a5763a IS |
4347 | case AF_INET6: |
4348 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fib6_event_work); | |
4349 | mlxsw_sp_router_fib6_event(fib_work, info); | |
ad178c8e | 4350 | break; |
3057224e IS |
4351 | } |
4352 | ||
a0e4761d | 4353 | mlxsw_core_schedule_work(&fib_work->work); |
3057224e | 4354 | |
b45f64d1 JP |
4355 | return NOTIFY_DONE; |
4356 | } | |
4357 | ||
4724ba56 IS |
4358 | static struct mlxsw_sp_rif * |
4359 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
4360 | const struct net_device *dev) | |
4361 | { | |
4362 | int i; | |
4363 | ||
4364 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
5f9efffb IS |
4365 | if (mlxsw_sp->router->rifs[i] && |
4366 | mlxsw_sp->router->rifs[i]->dev == dev) | |
4367 | return mlxsw_sp->router->rifs[i]; | |
4724ba56 IS |
4368 | |
4369 | return NULL; | |
4370 | } | |
4371 | ||
4372 | static int mlxsw_sp_router_rif_disable(struct mlxsw_sp *mlxsw_sp, u16 rif) | |
4373 | { | |
4374 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
4375 | int err; | |
4376 | ||
4377 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif); | |
4378 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
4379 | if (WARN_ON_ONCE(err)) | |
4380 | return err; | |
4381 | ||
4382 | mlxsw_reg_ritr_enable_set(ritr_pl, false); | |
4383 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
4384 | } | |
4385 | ||
4386 | static void mlxsw_sp_router_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
bf95233e | 4387 | struct mlxsw_sp_rif *rif) |
4724ba56 | 4388 | { |
bf95233e AS |
4389 | mlxsw_sp_router_rif_disable(mlxsw_sp, rif->rif_index); |
4390 | mlxsw_sp_nexthop_rif_gone_sync(mlxsw_sp, rif); | |
4391 | mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, rif); | |
4724ba56 IS |
4392 | } |
4393 | ||
5ea1237f AS |
4394 | static bool |
4395 | mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *rif, struct net_device *dev, | |
4396 | unsigned long event) | |
4724ba56 | 4397 | { |
5ea1237f AS |
4398 | struct inet6_dev *inet6_dev; |
4399 | bool addr_list_empty = true; | |
4400 | struct in_device *idev; | |
4401 | ||
4724ba56 IS |
4402 | switch (event) { |
4403 | case NETDEV_UP: | |
f1b1f273 | 4404 | return rif == NULL; |
4724ba56 | 4405 | case NETDEV_DOWN: |
5ea1237f AS |
4406 | idev = __in_dev_get_rtnl(dev); |
4407 | if (idev && idev->ifa_list) | |
4408 | addr_list_empty = false; | |
4409 | ||
4410 | inet6_dev = __in6_dev_get(dev); | |
4411 | if (addr_list_empty && inet6_dev && | |
4412 | !list_empty(&inet6_dev->addr_list)) | |
4413 | addr_list_empty = false; | |
4414 | ||
4415 | if (rif && addr_list_empty && | |
bf95233e | 4416 | !netif_is_l3_slave(rif->dev)) |
4724ba56 IS |
4417 | return true; |
4418 | /* It is possible we already removed the RIF ourselves | |
4419 | * if it was assigned to a netdev that is now a bridge | |
4420 | * or LAG slave. | |
4421 | */ | |
4422 | return false; | |
4423 | } | |
4424 | ||
4425 | return false; | |
4426 | } | |
4427 | ||
e4f3c1c1 IS |
4428 | static enum mlxsw_sp_rif_type |
4429 | mlxsw_sp_dev_rif_type(const struct mlxsw_sp *mlxsw_sp, | |
4430 | const struct net_device *dev) | |
4431 | { | |
4432 | enum mlxsw_sp_fid_type type; | |
4433 | ||
6ddb7426 PM |
4434 | if (mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, NULL)) |
4435 | return MLXSW_SP_RIF_TYPE_IPIP_LB; | |
4436 | ||
4437 | /* Otherwise RIF type is derived from the type of the underlying FID. */ | |
e4f3c1c1 IS |
4438 | if (is_vlan_dev(dev) && netif_is_bridge_master(vlan_dev_real_dev(dev))) |
4439 | type = MLXSW_SP_FID_TYPE_8021Q; | |
4440 | else if (netif_is_bridge_master(dev) && br_vlan_enabled(dev)) | |
4441 | type = MLXSW_SP_FID_TYPE_8021Q; | |
4442 | else if (netif_is_bridge_master(dev)) | |
4443 | type = MLXSW_SP_FID_TYPE_8021D; | |
4444 | else | |
4445 | type = MLXSW_SP_FID_TYPE_RFID; | |
4446 | ||
4447 | return mlxsw_sp_fid_type_rif_type(mlxsw_sp, type); | |
4448 | } | |
4449 | ||
de5ed99e | 4450 | static int mlxsw_sp_rif_index_alloc(struct mlxsw_sp *mlxsw_sp, u16 *p_rif_index) |
4724ba56 IS |
4451 | { |
4452 | int i; | |
4453 | ||
de5ed99e IS |
4454 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) { |
4455 | if (!mlxsw_sp->router->rifs[i]) { | |
4456 | *p_rif_index = i; | |
4457 | return 0; | |
4458 | } | |
4459 | } | |
4724ba56 | 4460 | |
de5ed99e | 4461 | return -ENOBUFS; |
4724ba56 IS |
4462 | } |
4463 | ||
e4f3c1c1 IS |
4464 | static struct mlxsw_sp_rif *mlxsw_sp_rif_alloc(size_t rif_size, u16 rif_index, |
4465 | u16 vr_id, | |
4466 | struct net_device *l3_dev) | |
4724ba56 | 4467 | { |
bf95233e | 4468 | struct mlxsw_sp_rif *rif; |
4724ba56 | 4469 | |
e4f3c1c1 | 4470 | rif = kzalloc(rif_size, GFP_KERNEL); |
bf95233e | 4471 | if (!rif) |
4724ba56 IS |
4472 | return NULL; |
4473 | ||
bf95233e AS |
4474 | INIT_LIST_HEAD(&rif->nexthop_list); |
4475 | INIT_LIST_HEAD(&rif->neigh_list); | |
4476 | ether_addr_copy(rif->addr, l3_dev->dev_addr); | |
4477 | rif->mtu = l3_dev->mtu; | |
4478 | rif->vr_id = vr_id; | |
4479 | rif->dev = l3_dev; | |
4480 | rif->rif_index = rif_index; | |
4724ba56 | 4481 | |
bf95233e | 4482 | return rif; |
4724ba56 IS |
4483 | } |
4484 | ||
5f9efffb IS |
4485 | struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp, |
4486 | u16 rif_index) | |
4487 | { | |
4488 | return mlxsw_sp->router->rifs[rif_index]; | |
4489 | } | |
4490 | ||
fd1b9d41 AS |
4491 | u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif) |
4492 | { | |
4493 | return rif->rif_index; | |
4494 | } | |
4495 | ||
4496 | int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif) | |
4497 | { | |
4498 | return rif->dev->ifindex; | |
4499 | } | |
4500 | ||
4724ba56 | 4501 | static struct mlxsw_sp_rif * |
e4f3c1c1 IS |
4502 | mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp, |
4503 | const struct mlxsw_sp_rif_params *params) | |
4724ba56 | 4504 | { |
e4f3c1c1 IS |
4505 | u32 tb_id = l3mdev_fib_table(params->dev); |
4506 | const struct mlxsw_sp_rif_ops *ops; | |
010cadf9 | 4507 | struct mlxsw_sp_fid *fid = NULL; |
e4f3c1c1 | 4508 | enum mlxsw_sp_rif_type type; |
bf95233e | 4509 | struct mlxsw_sp_rif *rif; |
a1107487 IS |
4510 | struct mlxsw_sp_vr *vr; |
4511 | u16 rif_index; | |
4724ba56 IS |
4512 | int err; |
4513 | ||
e4f3c1c1 IS |
4514 | type = mlxsw_sp_dev_rif_type(mlxsw_sp, params->dev); |
4515 | ops = mlxsw_sp->router->rif_ops_arr[type]; | |
4516 | ||
c9ec53f0 IS |
4517 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN); |
4518 | if (IS_ERR(vr)) | |
4519 | return ERR_CAST(vr); | |
4520 | ||
de5ed99e IS |
4521 | err = mlxsw_sp_rif_index_alloc(mlxsw_sp, &rif_index); |
4522 | if (err) | |
4523 | goto err_rif_index_alloc; | |
4724ba56 | 4524 | |
e4f3c1c1 | 4525 | rif = mlxsw_sp_rif_alloc(ops->rif_size, rif_index, vr->id, params->dev); |
a13a594d IS |
4526 | if (!rif) { |
4527 | err = -ENOMEM; | |
4528 | goto err_rif_alloc; | |
4529 | } | |
e4f3c1c1 IS |
4530 | rif->mlxsw_sp = mlxsw_sp; |
4531 | rif->ops = ops; | |
a13a594d | 4532 | |
010cadf9 PM |
4533 | if (ops->fid_get) { |
4534 | fid = ops->fid_get(rif); | |
4535 | if (IS_ERR(fid)) { | |
4536 | err = PTR_ERR(fid); | |
4537 | goto err_fid_get; | |
4538 | } | |
4539 | rif->fid = fid; | |
4d93ceeb IS |
4540 | } |
4541 | ||
e4f3c1c1 IS |
4542 | if (ops->setup) |
4543 | ops->setup(rif, params); | |
4544 | ||
4545 | err = ops->configure(rif); | |
4724ba56 | 4546 | if (err) |
e4f3c1c1 | 4547 | goto err_configure; |
4724ba56 | 4548 | |
e4f3c1c1 | 4549 | mlxsw_sp_rif_counters_alloc(rif); |
5f9efffb | 4550 | mlxsw_sp->router->rifs[rif_index] = rif; |
6913229e | 4551 | vr->rif_count++; |
4724ba56 | 4552 | |
bf95233e | 4553 | return rif; |
4724ba56 | 4554 | |
e4f3c1c1 | 4555 | err_configure: |
010cadf9 PM |
4556 | if (fid) |
4557 | mlxsw_sp_fid_put(fid); | |
a1107487 | 4558 | err_fid_get: |
e4f3c1c1 IS |
4559 | kfree(rif); |
4560 | err_rif_alloc: | |
de5ed99e | 4561 | err_rif_index_alloc: |
c9ec53f0 | 4562 | mlxsw_sp_vr_put(vr); |
4724ba56 IS |
4563 | return ERR_PTR(err); |
4564 | } | |
4565 | ||
e4f3c1c1 | 4566 | void mlxsw_sp_rif_destroy(struct mlxsw_sp_rif *rif) |
4724ba56 | 4567 | { |
e4f3c1c1 IS |
4568 | const struct mlxsw_sp_rif_ops *ops = rif->ops; |
4569 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
a1107487 | 4570 | struct mlxsw_sp_fid *fid = rif->fid; |
e4f3c1c1 | 4571 | struct mlxsw_sp_vr *vr; |
4724ba56 | 4572 | |
bf95233e | 4573 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif); |
e4f3c1c1 | 4574 | vr = &mlxsw_sp->router->vrs[rif->vr_id]; |
e0c0afd8 | 4575 | |
6913229e | 4576 | vr->rif_count--; |
e4f3c1c1 | 4577 | mlxsw_sp->router->rifs[rif->rif_index] = NULL; |
e4f3c1c1 | 4578 | mlxsw_sp_rif_counters_free(rif); |
e4f3c1c1 | 4579 | ops->deconfigure(rif); |
010cadf9 PM |
4580 | if (fid) |
4581 | /* Loopback RIFs are not associated with a FID. */ | |
4582 | mlxsw_sp_fid_put(fid); | |
e4f3c1c1 | 4583 | kfree(rif); |
c9ec53f0 | 4584 | mlxsw_sp_vr_put(vr); |
4724ba56 IS |
4585 | } |
4586 | ||
e4f3c1c1 IS |
4587 | static void |
4588 | mlxsw_sp_rif_subport_params_init(struct mlxsw_sp_rif_params *params, | |
4589 | struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) | |
4590 | { | |
4591 | struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; | |
4592 | ||
4593 | params->vid = mlxsw_sp_port_vlan->vid; | |
4594 | params->lag = mlxsw_sp_port->lagged; | |
4595 | if (params->lag) | |
4596 | params->lag_id = mlxsw_sp_port->lag_id; | |
4597 | else | |
4598 | params->system_port = mlxsw_sp_port->local_port; | |
4599 | } | |
4600 | ||
7cbecf24 | 4601 | static int |
a1107487 | 4602 | mlxsw_sp_port_vlan_router_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, |
7cbecf24 | 4603 | struct net_device *l3_dev) |
4724ba56 | 4604 | { |
7cbecf24 | 4605 | struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; |
1b8f09a0 | 4606 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
7cbecf24 | 4607 | u16 vid = mlxsw_sp_port_vlan->vid; |
bf95233e | 4608 | struct mlxsw_sp_rif *rif; |
a1107487 | 4609 | struct mlxsw_sp_fid *fid; |
03ea01e9 | 4610 | int err; |
4724ba56 | 4611 | |
1b8f09a0 | 4612 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
bf95233e | 4613 | if (!rif) { |
e4f3c1c1 IS |
4614 | struct mlxsw_sp_rif_params params = { |
4615 | .dev = l3_dev, | |
4616 | }; | |
4617 | ||
4618 | mlxsw_sp_rif_subport_params_init(¶ms, mlxsw_sp_port_vlan); | |
4619 | rif = mlxsw_sp_rif_create(mlxsw_sp, ¶ms); | |
bf95233e AS |
4620 | if (IS_ERR(rif)) |
4621 | return PTR_ERR(rif); | |
4724ba56 IS |
4622 | } |
4623 | ||
a1107487 | 4624 | /* FID was already created, just take a reference */ |
e4f3c1c1 | 4625 | fid = rif->ops->fid_get(rif); |
a1107487 IS |
4626 | err = mlxsw_sp_fid_port_vid_map(fid, mlxsw_sp_port, vid); |
4627 | if (err) | |
4628 | goto err_fid_port_vid_map; | |
4629 | ||
7cbecf24 | 4630 | err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false); |
03ea01e9 IS |
4631 | if (err) |
4632 | goto err_port_vid_learning_set; | |
4633 | ||
7cbecf24 | 4634 | err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, |
03ea01e9 IS |
4635 | BR_STATE_FORWARDING); |
4636 | if (err) | |
4637 | goto err_port_vid_stp_set; | |
4638 | ||
a1107487 | 4639 | mlxsw_sp_port_vlan->fid = fid; |
4724ba56 | 4640 | |
4724ba56 | 4641 | return 0; |
03ea01e9 IS |
4642 | |
4643 | err_port_vid_stp_set: | |
7cbecf24 | 4644 | mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true); |
03ea01e9 | 4645 | err_port_vid_learning_set: |
a1107487 IS |
4646 | mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid); |
4647 | err_fid_port_vid_map: | |
4648 | mlxsw_sp_fid_put(fid); | |
03ea01e9 | 4649 | return err; |
4724ba56 IS |
4650 | } |
4651 | ||
a1107487 IS |
4652 | void |
4653 | mlxsw_sp_port_vlan_router_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) | |
4724ba56 | 4654 | { |
ce95e154 | 4655 | struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; |
7cbecf24 | 4656 | struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid; |
ce95e154 | 4657 | u16 vid = mlxsw_sp_port_vlan->vid; |
ce95e154 | 4658 | |
a1107487 IS |
4659 | if (WARN_ON(mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_RFID)) |
4660 | return; | |
4aafc368 | 4661 | |
a1107487 | 4662 | mlxsw_sp_port_vlan->fid = NULL; |
7cbecf24 IS |
4663 | mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_BLOCKING); |
4664 | mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true); | |
a1107487 IS |
4665 | mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid); |
4666 | /* If router port holds the last reference on the rFID, then the | |
4667 | * associated Sub-port RIF will be destroyed. | |
4668 | */ | |
4669 | mlxsw_sp_fid_put(fid); | |
4724ba56 IS |
4670 | } |
4671 | ||
7cbecf24 IS |
4672 | static int mlxsw_sp_inetaddr_port_vlan_event(struct net_device *l3_dev, |
4673 | struct net_device *port_dev, | |
4674 | unsigned long event, u16 vid) | |
4724ba56 IS |
4675 | { |
4676 | struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev); | |
ce95e154 | 4677 | struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; |
4724ba56 | 4678 | |
ce95e154 | 4679 | mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); |
7cbecf24 IS |
4680 | if (WARN_ON(!mlxsw_sp_port_vlan)) |
4681 | return -EINVAL; | |
4724ba56 IS |
4682 | |
4683 | switch (event) { | |
4684 | case NETDEV_UP: | |
a1107487 | 4685 | return mlxsw_sp_port_vlan_router_join(mlxsw_sp_port_vlan, |
7cbecf24 | 4686 | l3_dev); |
4724ba56 | 4687 | case NETDEV_DOWN: |
a1107487 | 4688 | mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan); |
4724ba56 IS |
4689 | break; |
4690 | } | |
4691 | ||
4692 | return 0; | |
4693 | } | |
4694 | ||
4695 | static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev, | |
4696 | unsigned long event) | |
4697 | { | |
2b94e58d JP |
4698 | if (netif_is_bridge_port(port_dev) || |
4699 | netif_is_lag_port(port_dev) || | |
4700 | netif_is_ovs_port(port_dev)) | |
4724ba56 IS |
4701 | return 0; |
4702 | ||
7cbecf24 | 4703 | return mlxsw_sp_inetaddr_port_vlan_event(port_dev, port_dev, event, 1); |
4724ba56 IS |
4704 | } |
4705 | ||
4706 | static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev, | |
4707 | struct net_device *lag_dev, | |
4708 | unsigned long event, u16 vid) | |
4709 | { | |
4710 | struct net_device *port_dev; | |
4711 | struct list_head *iter; | |
4712 | int err; | |
4713 | ||
4714 | netdev_for_each_lower_dev(lag_dev, port_dev, iter) { | |
4715 | if (mlxsw_sp_port_dev_check(port_dev)) { | |
7cbecf24 IS |
4716 | err = mlxsw_sp_inetaddr_port_vlan_event(l3_dev, |
4717 | port_dev, | |
4718 | event, vid); | |
4724ba56 IS |
4719 | if (err) |
4720 | return err; | |
4721 | } | |
4722 | } | |
4723 | ||
4724 | return 0; | |
4725 | } | |
4726 | ||
4727 | static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev, | |
4728 | unsigned long event) | |
4729 | { | |
4730 | if (netif_is_bridge_port(lag_dev)) | |
4731 | return 0; | |
4732 | ||
4733 | return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1); | |
4734 | } | |
4735 | ||
4724ba56 | 4736 | static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev, |
4724ba56 IS |
4737 | unsigned long event) |
4738 | { | |
4739 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); | |
e4f3c1c1 IS |
4740 | struct mlxsw_sp_rif_params params = { |
4741 | .dev = l3_dev, | |
4742 | }; | |
a1107487 | 4743 | struct mlxsw_sp_rif *rif; |
4724ba56 IS |
4744 | |
4745 | switch (event) { | |
4746 | case NETDEV_UP: | |
e4f3c1c1 IS |
4747 | rif = mlxsw_sp_rif_create(mlxsw_sp, ¶ms); |
4748 | if (IS_ERR(rif)) | |
4749 | return PTR_ERR(rif); | |
4750 | break; | |
4724ba56 | 4751 | case NETDEV_DOWN: |
a1107487 | 4752 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
e4f3c1c1 | 4753 | mlxsw_sp_rif_destroy(rif); |
4724ba56 IS |
4754 | break; |
4755 | } | |
4756 | ||
4757 | return 0; | |
4758 | } | |
4759 | ||
4760 | static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev, | |
4761 | unsigned long event) | |
4762 | { | |
4763 | struct net_device *real_dev = vlan_dev_real_dev(vlan_dev); | |
4724ba56 IS |
4764 | u16 vid = vlan_dev_vlan_id(vlan_dev); |
4765 | ||
6b27c8ad IS |
4766 | if (netif_is_bridge_port(vlan_dev)) |
4767 | return 0; | |
4768 | ||
4724ba56 | 4769 | if (mlxsw_sp_port_dev_check(real_dev)) |
7cbecf24 IS |
4770 | return mlxsw_sp_inetaddr_port_vlan_event(vlan_dev, real_dev, |
4771 | event, vid); | |
4724ba56 IS |
4772 | else if (netif_is_lag_master(real_dev)) |
4773 | return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event, | |
4774 | vid); | |
c57529e1 | 4775 | else if (netif_is_bridge_master(real_dev) && br_vlan_enabled(real_dev)) |
a1107487 | 4776 | return mlxsw_sp_inetaddr_bridge_event(vlan_dev, event); |
4724ba56 IS |
4777 | |
4778 | return 0; | |
4779 | } | |
4780 | ||
b1e45526 IS |
4781 | static int __mlxsw_sp_inetaddr_event(struct net_device *dev, |
4782 | unsigned long event) | |
4783 | { | |
4784 | if (mlxsw_sp_port_dev_check(dev)) | |
4785 | return mlxsw_sp_inetaddr_port_event(dev, event); | |
4786 | else if (netif_is_lag_master(dev)) | |
4787 | return mlxsw_sp_inetaddr_lag_event(dev, event); | |
4788 | else if (netif_is_bridge_master(dev)) | |
a1107487 | 4789 | return mlxsw_sp_inetaddr_bridge_event(dev, event); |
b1e45526 IS |
4790 | else if (is_vlan_dev(dev)) |
4791 | return mlxsw_sp_inetaddr_vlan_event(dev, event); | |
4792 | else | |
4793 | return 0; | |
4794 | } | |
4795 | ||
4724ba56 IS |
4796 | int mlxsw_sp_inetaddr_event(struct notifier_block *unused, |
4797 | unsigned long event, void *ptr) | |
4798 | { | |
4799 | struct in_ifaddr *ifa = (struct in_ifaddr *) ptr; | |
4800 | struct net_device *dev = ifa->ifa_dev->dev; | |
4801 | struct mlxsw_sp *mlxsw_sp; | |
bf95233e | 4802 | struct mlxsw_sp_rif *rif; |
4724ba56 IS |
4803 | int err = 0; |
4804 | ||
4805 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
4806 | if (!mlxsw_sp) | |
4807 | goto out; | |
4808 | ||
bf95233e | 4809 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
5ea1237f | 4810 | if (!mlxsw_sp_rif_should_config(rif, dev, event)) |
4724ba56 IS |
4811 | goto out; |
4812 | ||
b1e45526 | 4813 | err = __mlxsw_sp_inetaddr_event(dev, event); |
4724ba56 IS |
4814 | out: |
4815 | return notifier_from_errno(err); | |
4816 | } | |
4817 | ||
5ea1237f AS |
4818 | struct mlxsw_sp_inet6addr_event_work { |
4819 | struct work_struct work; | |
4820 | struct net_device *dev; | |
4821 | unsigned long event; | |
4822 | }; | |
4823 | ||
4824 | static void mlxsw_sp_inet6addr_event_work(struct work_struct *work) | |
4825 | { | |
4826 | struct mlxsw_sp_inet6addr_event_work *inet6addr_work = | |
4827 | container_of(work, struct mlxsw_sp_inet6addr_event_work, work); | |
4828 | struct net_device *dev = inet6addr_work->dev; | |
4829 | unsigned long event = inet6addr_work->event; | |
4830 | struct mlxsw_sp *mlxsw_sp; | |
4831 | struct mlxsw_sp_rif *rif; | |
4832 | ||
4833 | rtnl_lock(); | |
4834 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
4835 | if (!mlxsw_sp) | |
4836 | goto out; | |
4837 | ||
4838 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
4839 | if (!mlxsw_sp_rif_should_config(rif, dev, event)) | |
4840 | goto out; | |
4841 | ||
4842 | __mlxsw_sp_inetaddr_event(dev, event); | |
4843 | out: | |
4844 | rtnl_unlock(); | |
4845 | dev_put(dev); | |
4846 | kfree(inet6addr_work); | |
4847 | } | |
4848 | ||
4849 | /* Called with rcu_read_lock() */ | |
4850 | int mlxsw_sp_inet6addr_event(struct notifier_block *unused, | |
4851 | unsigned long event, void *ptr) | |
4852 | { | |
4853 | struct inet6_ifaddr *if6 = (struct inet6_ifaddr *) ptr; | |
4854 | struct mlxsw_sp_inet6addr_event_work *inet6addr_work; | |
4855 | struct net_device *dev = if6->idev->dev; | |
4856 | ||
4857 | if (!mlxsw_sp_port_dev_lower_find_rcu(dev)) | |
4858 | return NOTIFY_DONE; | |
4859 | ||
4860 | inet6addr_work = kzalloc(sizeof(*inet6addr_work), GFP_ATOMIC); | |
4861 | if (!inet6addr_work) | |
4862 | return NOTIFY_BAD; | |
4863 | ||
4864 | INIT_WORK(&inet6addr_work->work, mlxsw_sp_inet6addr_event_work); | |
4865 | inet6addr_work->dev = dev; | |
4866 | inet6addr_work->event = event; | |
4867 | dev_hold(dev); | |
4868 | mlxsw_core_schedule_work(&inet6addr_work->work); | |
4869 | ||
4870 | return NOTIFY_DONE; | |
4871 | } | |
4872 | ||
bf95233e | 4873 | static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, |
4724ba56 IS |
4874 | const char *mac, int mtu) |
4875 | { | |
4876 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
4877 | int err; | |
4878 | ||
bf95233e | 4879 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); |
4724ba56 IS |
4880 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); |
4881 | if (err) | |
4882 | return err; | |
4883 | ||
4884 | mlxsw_reg_ritr_mtu_set(ritr_pl, mtu); | |
4885 | mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac); | |
4886 | mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE); | |
4887 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
4888 | } | |
4889 | ||
4890 | int mlxsw_sp_netdevice_router_port_event(struct net_device *dev) | |
4891 | { | |
4892 | struct mlxsw_sp *mlxsw_sp; | |
bf95233e | 4893 | struct mlxsw_sp_rif *rif; |
a1107487 | 4894 | u16 fid_index; |
4724ba56 IS |
4895 | int err; |
4896 | ||
4897 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
4898 | if (!mlxsw_sp) | |
4899 | return 0; | |
4900 | ||
bf95233e AS |
4901 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
4902 | if (!rif) | |
4724ba56 | 4903 | return 0; |
a1107487 | 4904 | fid_index = mlxsw_sp_fid_index(rif->fid); |
4724ba56 | 4905 | |
a1107487 | 4906 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, false); |
4724ba56 IS |
4907 | if (err) |
4908 | return err; | |
4909 | ||
bf95233e AS |
4910 | err = mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, dev->dev_addr, |
4911 | dev->mtu); | |
4724ba56 IS |
4912 | if (err) |
4913 | goto err_rif_edit; | |
4914 | ||
a1107487 | 4915 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, fid_index, true); |
4724ba56 IS |
4916 | if (err) |
4917 | goto err_rif_fdb_op; | |
4918 | ||
bf95233e AS |
4919 | ether_addr_copy(rif->addr, dev->dev_addr); |
4920 | rif->mtu = dev->mtu; | |
4724ba56 | 4921 | |
bf95233e | 4922 | netdev_dbg(dev, "Updated RIF=%d\n", rif->rif_index); |
4724ba56 IS |
4923 | |
4924 | return 0; | |
4925 | ||
4926 | err_rif_fdb_op: | |
bf95233e | 4927 | mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, rif->addr, rif->mtu); |
4724ba56 | 4928 | err_rif_edit: |
a1107487 | 4929 | mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, true); |
4724ba56 IS |
4930 | return err; |
4931 | } | |
4932 | ||
b1e45526 IS |
4933 | static int mlxsw_sp_port_vrf_join(struct mlxsw_sp *mlxsw_sp, |
4934 | struct net_device *l3_dev) | |
7179eb5a | 4935 | { |
b1e45526 | 4936 | struct mlxsw_sp_rif *rif; |
7179eb5a | 4937 | |
b1e45526 IS |
4938 | /* If netdev is already associated with a RIF, then we need to |
4939 | * destroy it and create a new one with the new virtual router ID. | |
7179eb5a | 4940 | */ |
b1e45526 IS |
4941 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
4942 | if (rif) | |
4943 | __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN); | |
7179eb5a | 4944 | |
b1e45526 | 4945 | return __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_UP); |
7179eb5a IS |
4946 | } |
4947 | ||
b1e45526 IS |
4948 | static void mlxsw_sp_port_vrf_leave(struct mlxsw_sp *mlxsw_sp, |
4949 | struct net_device *l3_dev) | |
7179eb5a | 4950 | { |
b1e45526 | 4951 | struct mlxsw_sp_rif *rif; |
7179eb5a | 4952 | |
b1e45526 IS |
4953 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
4954 | if (!rif) | |
7179eb5a | 4955 | return; |
b1e45526 | 4956 | __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN); |
7179eb5a IS |
4957 | } |
4958 | ||
b1e45526 IS |
4959 | int mlxsw_sp_netdevice_vrf_event(struct net_device *l3_dev, unsigned long event, |
4960 | struct netdev_notifier_changeupper_info *info) | |
3d70e458 | 4961 | { |
b1e45526 IS |
4962 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); |
4963 | int err = 0; | |
3d70e458 | 4964 | |
b1e45526 IS |
4965 | if (!mlxsw_sp) |
4966 | return 0; | |
3d70e458 | 4967 | |
b1e45526 IS |
4968 | switch (event) { |
4969 | case NETDEV_PRECHANGEUPPER: | |
4970 | return 0; | |
4971 | case NETDEV_CHANGEUPPER: | |
4972 | if (info->linking) | |
4973 | err = mlxsw_sp_port_vrf_join(mlxsw_sp, l3_dev); | |
4974 | else | |
4975 | mlxsw_sp_port_vrf_leave(mlxsw_sp, l3_dev); | |
4976 | break; | |
4977 | } | |
3d70e458 | 4978 | |
b1e45526 | 4979 | return err; |
3d70e458 IS |
4980 | } |
4981 | ||
e4f3c1c1 IS |
4982 | static struct mlxsw_sp_rif_subport * |
4983 | mlxsw_sp_rif_subport_rif(const struct mlxsw_sp_rif *rif) | |
a1107487 | 4984 | { |
e4f3c1c1 IS |
4985 | return container_of(rif, struct mlxsw_sp_rif_subport, common); |
4986 | } | |
4987 | ||
4988 | static void mlxsw_sp_rif_subport_setup(struct mlxsw_sp_rif *rif, | |
4989 | const struct mlxsw_sp_rif_params *params) | |
4990 | { | |
4991 | struct mlxsw_sp_rif_subport *rif_subport; | |
4992 | ||
4993 | rif_subport = mlxsw_sp_rif_subport_rif(rif); | |
4994 | rif_subport->vid = params->vid; | |
4995 | rif_subport->lag = params->lag; | |
4996 | if (params->lag) | |
4997 | rif_subport->lag_id = params->lag_id; | |
a1107487 | 4998 | else |
e4f3c1c1 IS |
4999 | rif_subport->system_port = params->system_port; |
5000 | } | |
5001 | ||
5002 | static int mlxsw_sp_rif_subport_op(struct mlxsw_sp_rif *rif, bool enable) | |
5003 | { | |
5004 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
5005 | struct mlxsw_sp_rif_subport *rif_subport; | |
5006 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
5007 | ||
5008 | rif_subport = mlxsw_sp_rif_subport_rif(rif); | |
5009 | mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_SP_IF, | |
9571e828 PM |
5010 | rif->rif_index, rif->vr_id, rif->dev->mtu); |
5011 | mlxsw_reg_ritr_mac_pack(ritr_pl, rif->dev->dev_addr); | |
e4f3c1c1 IS |
5012 | mlxsw_reg_ritr_sp_if_pack(ritr_pl, rif_subport->lag, |
5013 | rif_subport->lag ? rif_subport->lag_id : | |
5014 | rif_subport->system_port, | |
5015 | rif_subport->vid); | |
5016 | ||
5017 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
5018 | } | |
5019 | ||
5020 | static int mlxsw_sp_rif_subport_configure(struct mlxsw_sp_rif *rif) | |
5021 | { | |
010cadf9 PM |
5022 | int err; |
5023 | ||
5024 | err = mlxsw_sp_rif_subport_op(rif, true); | |
5025 | if (err) | |
5026 | return err; | |
5027 | ||
5028 | err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, | |
5029 | mlxsw_sp_fid_index(rif->fid), true); | |
5030 | if (err) | |
5031 | goto err_rif_fdb_op; | |
5032 | ||
5033 | mlxsw_sp_fid_rif_set(rif->fid, rif); | |
5034 | return 0; | |
5035 | ||
5036 | err_rif_fdb_op: | |
5037 | mlxsw_sp_rif_subport_op(rif, false); | |
5038 | return err; | |
a1107487 IS |
5039 | } |
5040 | ||
e4f3c1c1 IS |
5041 | static void mlxsw_sp_rif_subport_deconfigure(struct mlxsw_sp_rif *rif) |
5042 | { | |
010cadf9 PM |
5043 | struct mlxsw_sp_fid *fid = rif->fid; |
5044 | ||
5045 | mlxsw_sp_fid_rif_set(fid, NULL); | |
5046 | mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, | |
5047 | mlxsw_sp_fid_index(fid), false); | |
e4f3c1c1 IS |
5048 | mlxsw_sp_rif_subport_op(rif, false); |
5049 | } | |
5050 | ||
5051 | static struct mlxsw_sp_fid * | |
5052 | mlxsw_sp_rif_subport_fid_get(struct mlxsw_sp_rif *rif) | |
5053 | { | |
5054 | return mlxsw_sp_fid_rfid_get(rif->mlxsw_sp, rif->rif_index); | |
5055 | } | |
5056 | ||
5057 | static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_subport_ops = { | |
5058 | .type = MLXSW_SP_RIF_TYPE_SUBPORT, | |
5059 | .rif_size = sizeof(struct mlxsw_sp_rif_subport), | |
5060 | .setup = mlxsw_sp_rif_subport_setup, | |
5061 | .configure = mlxsw_sp_rif_subport_configure, | |
5062 | .deconfigure = mlxsw_sp_rif_subport_deconfigure, | |
5063 | .fid_get = mlxsw_sp_rif_subport_fid_get, | |
5064 | }; | |
5065 | ||
5066 | static int mlxsw_sp_rif_vlan_fid_op(struct mlxsw_sp_rif *rif, | |
5067 | enum mlxsw_reg_ritr_if_type type, | |
5068 | u16 vid_fid, bool enable) | |
5069 | { | |
5070 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
5071 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
5072 | ||
5073 | mlxsw_reg_ritr_pack(ritr_pl, enable, type, rif->rif_index, rif->vr_id, | |
9571e828 PM |
5074 | rif->dev->mtu); |
5075 | mlxsw_reg_ritr_mac_pack(ritr_pl, rif->dev->dev_addr); | |
e4f3c1c1 IS |
5076 | mlxsw_reg_ritr_fid_set(ritr_pl, type, vid_fid); |
5077 | ||
5078 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
5079 | } | |
5080 | ||
5081 | static u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp) | |
5082 | { | |
5083 | return mlxsw_core_max_ports(mlxsw_sp->core) + 1; | |
5084 | } | |
5085 | ||
5086 | static int mlxsw_sp_rif_vlan_configure(struct mlxsw_sp_rif *rif) | |
5087 | { | |
5088 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
5089 | u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid); | |
5090 | int err; | |
5091 | ||
5092 | err = mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, true); | |
5093 | if (err) | |
5094 | return err; | |
5095 | ||
0d284818 IS |
5096 | err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
5097 | mlxsw_sp_router_port(mlxsw_sp), true); | |
5098 | if (err) | |
5099 | goto err_fid_mc_flood_set; | |
5100 | ||
e4f3c1c1 IS |
5101 | err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, |
5102 | mlxsw_sp_router_port(mlxsw_sp), true); | |
5103 | if (err) | |
5104 | goto err_fid_bc_flood_set; | |
5105 | ||
010cadf9 PM |
5106 | err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, |
5107 | mlxsw_sp_fid_index(rif->fid), true); | |
5108 | if (err) | |
5109 | goto err_rif_fdb_op; | |
5110 | ||
5111 | mlxsw_sp_fid_rif_set(rif->fid, rif); | |
e4f3c1c1 IS |
5112 | return 0; |
5113 | ||
010cadf9 PM |
5114 | err_rif_fdb_op: |
5115 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, | |
5116 | mlxsw_sp_router_port(mlxsw_sp), false); | |
e4f3c1c1 | 5117 | err_fid_bc_flood_set: |
0d284818 IS |
5118 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
5119 | mlxsw_sp_router_port(mlxsw_sp), false); | |
5120 | err_fid_mc_flood_set: | |
e4f3c1c1 IS |
5121 | mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, false); |
5122 | return err; | |
5123 | } | |
5124 | ||
5125 | static void mlxsw_sp_rif_vlan_deconfigure(struct mlxsw_sp_rif *rif) | |
5126 | { | |
e4f3c1c1 | 5127 | u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid); |
010cadf9 PM |
5128 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; |
5129 | struct mlxsw_sp_fid *fid = rif->fid; | |
e4f3c1c1 | 5130 | |
010cadf9 PM |
5131 | mlxsw_sp_fid_rif_set(fid, NULL); |
5132 | mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, | |
5133 | mlxsw_sp_fid_index(fid), false); | |
e4f3c1c1 IS |
5134 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, |
5135 | mlxsw_sp_router_port(mlxsw_sp), false); | |
0d284818 IS |
5136 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
5137 | mlxsw_sp_router_port(mlxsw_sp), false); | |
e4f3c1c1 IS |
5138 | mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, false); |
5139 | } | |
5140 | ||
5141 | static struct mlxsw_sp_fid * | |
5142 | mlxsw_sp_rif_vlan_fid_get(struct mlxsw_sp_rif *rif) | |
5143 | { | |
5144 | u16 vid = is_vlan_dev(rif->dev) ? vlan_dev_vlan_id(rif->dev) : 1; | |
5145 | ||
5146 | return mlxsw_sp_fid_8021q_get(rif->mlxsw_sp, vid); | |
5147 | } | |
5148 | ||
5149 | static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_vlan_ops = { | |
5150 | .type = MLXSW_SP_RIF_TYPE_VLAN, | |
5151 | .rif_size = sizeof(struct mlxsw_sp_rif), | |
5152 | .configure = mlxsw_sp_rif_vlan_configure, | |
5153 | .deconfigure = mlxsw_sp_rif_vlan_deconfigure, | |
5154 | .fid_get = mlxsw_sp_rif_vlan_fid_get, | |
5155 | }; | |
5156 | ||
5157 | static int mlxsw_sp_rif_fid_configure(struct mlxsw_sp_rif *rif) | |
5158 | { | |
5159 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
5160 | u16 fid_index = mlxsw_sp_fid_index(rif->fid); | |
5161 | int err; | |
5162 | ||
5163 | err = mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, | |
5164 | true); | |
5165 | if (err) | |
5166 | return err; | |
5167 | ||
0d284818 IS |
5168 | err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
5169 | mlxsw_sp_router_port(mlxsw_sp), true); | |
5170 | if (err) | |
5171 | goto err_fid_mc_flood_set; | |
5172 | ||
e4f3c1c1 IS |
5173 | err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, |
5174 | mlxsw_sp_router_port(mlxsw_sp), true); | |
5175 | if (err) | |
5176 | goto err_fid_bc_flood_set; | |
5177 | ||
010cadf9 PM |
5178 | err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, |
5179 | mlxsw_sp_fid_index(rif->fid), true); | |
5180 | if (err) | |
5181 | goto err_rif_fdb_op; | |
5182 | ||
5183 | mlxsw_sp_fid_rif_set(rif->fid, rif); | |
e4f3c1c1 IS |
5184 | return 0; |
5185 | ||
010cadf9 PM |
5186 | err_rif_fdb_op: |
5187 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, | |
5188 | mlxsw_sp_router_port(mlxsw_sp), false); | |
e4f3c1c1 | 5189 | err_fid_bc_flood_set: |
0d284818 IS |
5190 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
5191 | mlxsw_sp_router_port(mlxsw_sp), false); | |
5192 | err_fid_mc_flood_set: | |
e4f3c1c1 IS |
5193 | mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, false); |
5194 | return err; | |
5195 | } | |
5196 | ||
5197 | static void mlxsw_sp_rif_fid_deconfigure(struct mlxsw_sp_rif *rif) | |
5198 | { | |
e4f3c1c1 | 5199 | u16 fid_index = mlxsw_sp_fid_index(rif->fid); |
010cadf9 PM |
5200 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; |
5201 | struct mlxsw_sp_fid *fid = rif->fid; | |
e4f3c1c1 | 5202 | |
010cadf9 PM |
5203 | mlxsw_sp_fid_rif_set(fid, NULL); |
5204 | mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr, | |
5205 | mlxsw_sp_fid_index(fid), false); | |
e4f3c1c1 IS |
5206 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, |
5207 | mlxsw_sp_router_port(mlxsw_sp), false); | |
0d284818 IS |
5208 | mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, |
5209 | mlxsw_sp_router_port(mlxsw_sp), false); | |
e4f3c1c1 IS |
5210 | mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, false); |
5211 | } | |
5212 | ||
5213 | static struct mlxsw_sp_fid * | |
5214 | mlxsw_sp_rif_fid_fid_get(struct mlxsw_sp_rif *rif) | |
5215 | { | |
5216 | return mlxsw_sp_fid_8021d_get(rif->mlxsw_sp, rif->dev->ifindex); | |
5217 | } | |
5218 | ||
5219 | static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_fid_ops = { | |
5220 | .type = MLXSW_SP_RIF_TYPE_FID, | |
5221 | .rif_size = sizeof(struct mlxsw_sp_rif), | |
5222 | .configure = mlxsw_sp_rif_fid_configure, | |
5223 | .deconfigure = mlxsw_sp_rif_fid_deconfigure, | |
5224 | .fid_get = mlxsw_sp_rif_fid_fid_get, | |
5225 | }; | |
5226 | ||
6ddb7426 PM |
5227 | static struct mlxsw_sp_rif_ipip_lb * |
5228 | mlxsw_sp_rif_ipip_lb_rif(struct mlxsw_sp_rif *rif) | |
5229 | { | |
5230 | return container_of(rif, struct mlxsw_sp_rif_ipip_lb, common); | |
5231 | } | |
5232 | ||
5233 | static void | |
5234 | mlxsw_sp_rif_ipip_lb_setup(struct mlxsw_sp_rif *rif, | |
5235 | const struct mlxsw_sp_rif_params *params) | |
5236 | { | |
5237 | struct mlxsw_sp_rif_params_ipip_lb *params_lb; | |
5238 | struct mlxsw_sp_rif_ipip_lb *rif_lb; | |
5239 | ||
5240 | params_lb = container_of(params, struct mlxsw_sp_rif_params_ipip_lb, | |
5241 | common); | |
5242 | rif_lb = mlxsw_sp_rif_ipip_lb_rif(rif); | |
5243 | rif_lb->lb_config = params_lb->lb_config; | |
5244 | } | |
5245 | ||
5246 | static int | |
5247 | mlxsw_sp_rif_ipip_lb_op(struct mlxsw_sp_rif_ipip_lb *lb_rif, | |
5248 | struct mlxsw_sp_vr *ul_vr, bool enable) | |
5249 | { | |
5250 | struct mlxsw_sp_rif_ipip_lb_config lb_cf = lb_rif->lb_config; | |
5251 | struct mlxsw_sp_rif *rif = &lb_rif->common; | |
5252 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
5253 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
5254 | u32 saddr4; | |
5255 | ||
5256 | switch (lb_cf.ul_protocol) { | |
5257 | case MLXSW_SP_L3_PROTO_IPV4: | |
5258 | saddr4 = be32_to_cpu(lb_cf.saddr.addr4); | |
5259 | mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_LOOPBACK_IF, | |
5260 | rif->rif_index, rif->vr_id, rif->dev->mtu); | |
5261 | mlxsw_reg_ritr_loopback_ipip4_pack(ritr_pl, lb_cf.lb_ipipt, | |
5262 | MLXSW_REG_RITR_LOOPBACK_IPIP_OPTIONS_GRE_KEY_PRESET, | |
5263 | ul_vr->id, saddr4, lb_cf.okey); | |
5264 | break; | |
5265 | ||
5266 | case MLXSW_SP_L3_PROTO_IPV6: | |
5267 | return -EAFNOSUPPORT; | |
5268 | } | |
5269 | ||
5270 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
5271 | } | |
5272 | ||
5273 | static int | |
5274 | mlxsw_sp_rif_ipip_lb_configure(struct mlxsw_sp_rif *rif) | |
5275 | { | |
5276 | struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif); | |
5277 | u32 ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(rif->dev); | |
5278 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
5279 | struct mlxsw_sp_vr *ul_vr; | |
5280 | int err; | |
5281 | ||
5282 | ul_vr = mlxsw_sp_vr_get(mlxsw_sp, ul_tb_id); | |
5283 | if (IS_ERR(ul_vr)) | |
5284 | return PTR_ERR(ul_vr); | |
5285 | ||
5286 | err = mlxsw_sp_rif_ipip_lb_op(lb_rif, ul_vr, true); | |
5287 | if (err) | |
5288 | goto err_loopback_op; | |
5289 | ||
5290 | lb_rif->ul_vr_id = ul_vr->id; | |
5291 | ++ul_vr->rif_count; | |
5292 | return 0; | |
5293 | ||
5294 | err_loopback_op: | |
5295 | mlxsw_sp_vr_put(ul_vr); | |
5296 | return err; | |
5297 | } | |
5298 | ||
5299 | static void mlxsw_sp_rif_ipip_lb_deconfigure(struct mlxsw_sp_rif *rif) | |
5300 | { | |
5301 | struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif); | |
5302 | struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; | |
5303 | struct mlxsw_sp_vr *ul_vr; | |
5304 | ||
5305 | ul_vr = &mlxsw_sp->router->vrs[lb_rif->ul_vr_id]; | |
5306 | mlxsw_sp_rif_ipip_lb_op(lb_rif, ul_vr, false); | |
5307 | ||
5308 | --ul_vr->rif_count; | |
5309 | mlxsw_sp_vr_put(ul_vr); | |
5310 | } | |
5311 | ||
5312 | static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_ipip_lb_ops = { | |
5313 | .type = MLXSW_SP_RIF_TYPE_IPIP_LB, | |
5314 | .rif_size = sizeof(struct mlxsw_sp_rif_ipip_lb), | |
5315 | .setup = mlxsw_sp_rif_ipip_lb_setup, | |
5316 | .configure = mlxsw_sp_rif_ipip_lb_configure, | |
5317 | .deconfigure = mlxsw_sp_rif_ipip_lb_deconfigure, | |
5318 | }; | |
5319 | ||
e4f3c1c1 IS |
5320 | static const struct mlxsw_sp_rif_ops *mlxsw_sp_rif_ops_arr[] = { |
5321 | [MLXSW_SP_RIF_TYPE_SUBPORT] = &mlxsw_sp_rif_subport_ops, | |
5322 | [MLXSW_SP_RIF_TYPE_VLAN] = &mlxsw_sp_rif_vlan_ops, | |
5323 | [MLXSW_SP_RIF_TYPE_FID] = &mlxsw_sp_rif_fid_ops, | |
6ddb7426 | 5324 | [MLXSW_SP_RIF_TYPE_IPIP_LB] = &mlxsw_sp_rif_ipip_lb_ops, |
e4f3c1c1 IS |
5325 | }; |
5326 | ||
348b8fc3 IS |
5327 | static int mlxsw_sp_rifs_init(struct mlxsw_sp *mlxsw_sp) |
5328 | { | |
5329 | u64 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); | |
5330 | ||
5331 | mlxsw_sp->router->rifs = kcalloc(max_rifs, | |
5332 | sizeof(struct mlxsw_sp_rif *), | |
5333 | GFP_KERNEL); | |
5334 | if (!mlxsw_sp->router->rifs) | |
5335 | return -ENOMEM; | |
e4f3c1c1 IS |
5336 | |
5337 | mlxsw_sp->router->rif_ops_arr = mlxsw_sp_rif_ops_arr; | |
5338 | ||
348b8fc3 IS |
5339 | return 0; |
5340 | } | |
5341 | ||
5342 | static void mlxsw_sp_rifs_fini(struct mlxsw_sp *mlxsw_sp) | |
5343 | { | |
5344 | int i; | |
5345 | ||
5346 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
5347 | WARN_ON_ONCE(mlxsw_sp->router->rifs[i]); | |
5348 | ||
5349 | kfree(mlxsw_sp->router->rifs); | |
5350 | } | |
5351 | ||
38ebc0f4 PM |
5352 | static int mlxsw_sp_ipips_init(struct mlxsw_sp *mlxsw_sp) |
5353 | { | |
5354 | mlxsw_sp->router->ipip_ops_arr = mlxsw_sp_ipip_ops_arr; | |
5355 | return 0; | |
5356 | } | |
5357 | ||
5358 | static void mlxsw_sp_ipips_fini(struct mlxsw_sp *mlxsw_sp) | |
5359 | { | |
5360 | } | |
5361 | ||
c3852ef7 IS |
5362 | static void mlxsw_sp_router_fib_dump_flush(struct notifier_block *nb) |
5363 | { | |
7e39d115 | 5364 | struct mlxsw_sp_router *router; |
c3852ef7 IS |
5365 | |
5366 | /* Flush pending FIB notifications and then flush the device's | |
5367 | * table before requesting another dump. The FIB notification | |
5368 | * block is unregistered, so no need to take RTNL. | |
5369 | */ | |
5370 | mlxsw_core_flush_owq(); | |
7e39d115 IS |
5371 | router = container_of(nb, struct mlxsw_sp_router, fib_nb); |
5372 | mlxsw_sp_router_fib_flush(router->mlxsw_sp); | |
c3852ef7 IS |
5373 | } |
5374 | ||
4724ba56 IS |
5375 | static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
5376 | { | |
5377 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
5378 | u64 max_rifs; | |
5379 | int err; | |
5380 | ||
5381 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS)) | |
5382 | return -EIO; | |
4724ba56 | 5383 | max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); |
4724ba56 | 5384 | |
e29237e7 | 5385 | mlxsw_reg_rgcr_pack(rgcr_pl, true, true); |
4724ba56 IS |
5386 | mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs); |
5387 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
5388 | if (err) | |
348b8fc3 | 5389 | return err; |
4724ba56 | 5390 | return 0; |
4724ba56 IS |
5391 | } |
5392 | ||
5393 | static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
5394 | { | |
5395 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
4724ba56 | 5396 | |
e29237e7 | 5397 | mlxsw_reg_rgcr_pack(rgcr_pl, false, false); |
4724ba56 | 5398 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); |
4724ba56 IS |
5399 | } |
5400 | ||
b45f64d1 JP |
5401 | int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
5402 | { | |
9011b677 | 5403 | struct mlxsw_sp_router *router; |
b45f64d1 JP |
5404 | int err; |
5405 | ||
9011b677 IS |
5406 | router = kzalloc(sizeof(*mlxsw_sp->router), GFP_KERNEL); |
5407 | if (!router) | |
5408 | return -ENOMEM; | |
5409 | mlxsw_sp->router = router; | |
5410 | router->mlxsw_sp = mlxsw_sp; | |
5411 | ||
5412 | INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_neighs_list); | |
b45f64d1 JP |
5413 | err = __mlxsw_sp_router_init(mlxsw_sp); |
5414 | if (err) | |
9011b677 | 5415 | goto err_router_init; |
b45f64d1 | 5416 | |
348b8fc3 IS |
5417 | err = mlxsw_sp_rifs_init(mlxsw_sp); |
5418 | if (err) | |
5419 | goto err_rifs_init; | |
5420 | ||
38ebc0f4 PM |
5421 | err = mlxsw_sp_ipips_init(mlxsw_sp); |
5422 | if (err) | |
5423 | goto err_ipips_init; | |
5424 | ||
9011b677 | 5425 | err = rhashtable_init(&mlxsw_sp->router->nexthop_ht, |
c53b8e1b IS |
5426 | &mlxsw_sp_nexthop_ht_params); |
5427 | if (err) | |
5428 | goto err_nexthop_ht_init; | |
5429 | ||
9011b677 | 5430 | err = rhashtable_init(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
5431 | &mlxsw_sp_nexthop_group_ht_params); |
5432 | if (err) | |
5433 | goto err_nexthop_group_ht_init; | |
5434 | ||
8494ab06 IS |
5435 | err = mlxsw_sp_lpm_init(mlxsw_sp); |
5436 | if (err) | |
5437 | goto err_lpm_init; | |
5438 | ||
b45f64d1 JP |
5439 | err = mlxsw_sp_vrs_init(mlxsw_sp); |
5440 | if (err) | |
5441 | goto err_vrs_init; | |
5442 | ||
8c9583a8 | 5443 | err = mlxsw_sp_neigh_init(mlxsw_sp); |
b45f64d1 JP |
5444 | if (err) |
5445 | goto err_neigh_init; | |
5446 | ||
7e39d115 IS |
5447 | mlxsw_sp->router->fib_nb.notifier_call = mlxsw_sp_router_fib_event; |
5448 | err = register_fib_notifier(&mlxsw_sp->router->fib_nb, | |
c3852ef7 IS |
5449 | mlxsw_sp_router_fib_dump_flush); |
5450 | if (err) | |
5451 | goto err_register_fib_notifier; | |
5452 | ||
b45f64d1 JP |
5453 | return 0; |
5454 | ||
c3852ef7 IS |
5455 | err_register_fib_notifier: |
5456 | mlxsw_sp_neigh_fini(mlxsw_sp); | |
b45f64d1 JP |
5457 | err_neigh_init: |
5458 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
5459 | err_vrs_init: | |
8494ab06 IS |
5460 | mlxsw_sp_lpm_fini(mlxsw_sp); |
5461 | err_lpm_init: | |
9011b677 | 5462 | rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht); |
e9ad5e7d | 5463 | err_nexthop_group_ht_init: |
9011b677 | 5464 | rhashtable_destroy(&mlxsw_sp->router->nexthop_ht); |
c53b8e1b | 5465 | err_nexthop_ht_init: |
38ebc0f4 PM |
5466 | mlxsw_sp_ipips_fini(mlxsw_sp); |
5467 | err_ipips_init: | |
348b8fc3 IS |
5468 | mlxsw_sp_rifs_fini(mlxsw_sp); |
5469 | err_rifs_init: | |
b45f64d1 | 5470 | __mlxsw_sp_router_fini(mlxsw_sp); |
9011b677 IS |
5471 | err_router_init: |
5472 | kfree(mlxsw_sp->router); | |
b45f64d1 JP |
5473 | return err; |
5474 | } | |
5475 | ||
5476 | void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
5477 | { | |
7e39d115 | 5478 | unregister_fib_notifier(&mlxsw_sp->router->fib_nb); |
b45f64d1 JP |
5479 | mlxsw_sp_neigh_fini(mlxsw_sp); |
5480 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
8494ab06 | 5481 | mlxsw_sp_lpm_fini(mlxsw_sp); |
9011b677 IS |
5482 | rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht); |
5483 | rhashtable_destroy(&mlxsw_sp->router->nexthop_ht); | |
38ebc0f4 | 5484 | mlxsw_sp_ipips_fini(mlxsw_sp); |
348b8fc3 | 5485 | mlxsw_sp_rifs_fini(mlxsw_sp); |
b45f64d1 | 5486 | __mlxsw_sp_router_fini(mlxsw_sp); |
9011b677 | 5487 | kfree(mlxsw_sp->router); |
b45f64d1 | 5488 | } |