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464dce18 IS |
1 | /* |
2 | * drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | |
3 | * Copyright (c) 2016 Mellanox Technologies. All rights reserved. | |
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> |
464dce18 IS |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions are met: | |
10 | * | |
11 | * 1. Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * 3. Neither the names of the copyright holders nor the names of its | |
17 | * contributors may be used to endorse or promote products derived from | |
18 | * this software without specific prior written permission. | |
19 | * | |
20 | * Alternatively, this software may be distributed under the terms of the | |
21 | * GNU General Public License ("GPL") version 2 as published by the Free | |
22 | * Software Foundation. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
28 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
34 | * POSSIBILITY OF SUCH DAMAGE. | |
35 | */ | |
36 | ||
37 | #include <linux/kernel.h> | |
38 | #include <linux/types.h> | |
5e9c16cc JP |
39 | #include <linux/rhashtable.h> |
40 | #include <linux/bitops.h> | |
41 | #include <linux/in6.h> | |
c723c735 | 42 | #include <linux/notifier.h> |
df6dd79b | 43 | #include <linux/inetdevice.h> |
9db032bb | 44 | #include <linux/netdevice.h> |
c723c735 | 45 | #include <net/netevent.h> |
6cf3c971 JP |
46 | #include <net/neighbour.h> |
47 | #include <net/arp.h> | |
b45f64d1 | 48 | #include <net/ip_fib.h> |
5d7bfd14 | 49 | #include <net/fib_rules.h> |
57837885 | 50 | #include <net/l3mdev.h> |
464dce18 IS |
51 | |
52 | #include "spectrum.h" | |
53 | #include "core.h" | |
54 | #include "reg.h" | |
55 | ||
4724ba56 IS |
56 | struct mlxsw_sp_rif { |
57 | struct list_head nexthop_list; | |
58 | struct list_head neigh_list; | |
59 | struct net_device *dev; | |
60 | struct mlxsw_sp_fid *f; | |
61 | unsigned char addr[ETH_ALEN]; | |
62 | int mtu; | |
63 | u16 rif; | |
6913229e | 64 | u16 vr_id; |
4724ba56 IS |
65 | }; |
66 | ||
67 | static struct mlxsw_sp_rif * | |
68 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
69 | const struct net_device *dev); | |
70 | ||
53342023 JP |
71 | #define mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) \ |
72 | for_each_set_bit(prefix, (prefix_usage)->b, MLXSW_SP_PREFIX_COUNT) | |
73 | ||
6b75c480 JP |
74 | static bool |
75 | mlxsw_sp_prefix_usage_subset(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
76 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
77 | { | |
78 | unsigned char prefix; | |
79 | ||
80 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage1) { | |
81 | if (!test_bit(prefix, prefix_usage2->b)) | |
82 | return false; | |
83 | } | |
84 | return true; | |
85 | } | |
86 | ||
53342023 JP |
87 | static bool |
88 | mlxsw_sp_prefix_usage_eq(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
89 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
90 | { | |
91 | return !memcmp(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
92 | } | |
93 | ||
6b75c480 JP |
94 | static bool |
95 | mlxsw_sp_prefix_usage_none(struct mlxsw_sp_prefix_usage *prefix_usage) | |
96 | { | |
97 | struct mlxsw_sp_prefix_usage prefix_usage_none = {{ 0 } }; | |
98 | ||
99 | return mlxsw_sp_prefix_usage_eq(prefix_usage, &prefix_usage_none); | |
100 | } | |
101 | ||
102 | static void | |
103 | mlxsw_sp_prefix_usage_cpy(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
104 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
105 | { | |
106 | memcpy(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
107 | } | |
108 | ||
5e9c16cc JP |
109 | static void |
110 | mlxsw_sp_prefix_usage_set(struct mlxsw_sp_prefix_usage *prefix_usage, | |
111 | unsigned char prefix_len) | |
112 | { | |
113 | set_bit(prefix_len, prefix_usage->b); | |
114 | } | |
115 | ||
116 | static void | |
117 | mlxsw_sp_prefix_usage_clear(struct mlxsw_sp_prefix_usage *prefix_usage, | |
118 | unsigned char prefix_len) | |
119 | { | |
120 | clear_bit(prefix_len, prefix_usage->b); | |
121 | } | |
122 | ||
123 | struct mlxsw_sp_fib_key { | |
124 | unsigned char addr[sizeof(struct in6_addr)]; | |
125 | unsigned char prefix_len; | |
126 | }; | |
127 | ||
61c503f9 JP |
128 | enum mlxsw_sp_fib_entry_type { |
129 | MLXSW_SP_FIB_ENTRY_TYPE_REMOTE, | |
130 | MLXSW_SP_FIB_ENTRY_TYPE_LOCAL, | |
131 | MLXSW_SP_FIB_ENTRY_TYPE_TRAP, | |
132 | }; | |
133 | ||
a7ff87ac JP |
134 | struct mlxsw_sp_nexthop_group; |
135 | ||
9aecce1c IS |
136 | struct mlxsw_sp_fib_node { |
137 | struct list_head entry_list; | |
b45f64d1 | 138 | struct list_head list; |
9aecce1c | 139 | struct rhash_head ht_node; |
76610ebb | 140 | struct mlxsw_sp_fib *fib; |
5e9c16cc | 141 | struct mlxsw_sp_fib_key key; |
9aecce1c IS |
142 | }; |
143 | ||
144 | struct mlxsw_sp_fib_entry_params { | |
145 | u32 tb_id; | |
146 | u32 prio; | |
147 | u8 tos; | |
148 | u8 type; | |
149 | }; | |
150 | ||
151 | struct mlxsw_sp_fib_entry { | |
152 | struct list_head list; | |
153 | struct mlxsw_sp_fib_node *fib_node; | |
61c503f9 | 154 | enum mlxsw_sp_fib_entry_type type; |
a7ff87ac JP |
155 | struct list_head nexthop_group_node; |
156 | struct mlxsw_sp_nexthop_group *nh_group; | |
9aecce1c | 157 | struct mlxsw_sp_fib_entry_params params; |
013b20f9 | 158 | bool offloaded; |
5e9c16cc JP |
159 | }; |
160 | ||
161 | struct mlxsw_sp_fib { | |
162 | struct rhashtable ht; | |
9aecce1c | 163 | struct list_head node_list; |
76610ebb IS |
164 | struct mlxsw_sp_vr *vr; |
165 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
5e9c16cc JP |
166 | unsigned long prefix_ref_count[MLXSW_SP_PREFIX_COUNT]; |
167 | struct mlxsw_sp_prefix_usage prefix_usage; | |
76610ebb | 168 | enum mlxsw_sp_l3proto proto; |
5e9c16cc JP |
169 | }; |
170 | ||
9aecce1c | 171 | static const struct rhashtable_params mlxsw_sp_fib_ht_params; |
5e9c16cc | 172 | |
76610ebb IS |
173 | static struct mlxsw_sp_fib *mlxsw_sp_fib_create(struct mlxsw_sp_vr *vr, |
174 | enum mlxsw_sp_l3proto proto) | |
5e9c16cc JP |
175 | { |
176 | struct mlxsw_sp_fib *fib; | |
177 | int err; | |
178 | ||
179 | fib = kzalloc(sizeof(*fib), GFP_KERNEL); | |
180 | if (!fib) | |
181 | return ERR_PTR(-ENOMEM); | |
182 | err = rhashtable_init(&fib->ht, &mlxsw_sp_fib_ht_params); | |
183 | if (err) | |
184 | goto err_rhashtable_init; | |
9aecce1c | 185 | INIT_LIST_HEAD(&fib->node_list); |
76610ebb IS |
186 | fib->proto = proto; |
187 | fib->vr = vr; | |
5e9c16cc JP |
188 | return fib; |
189 | ||
190 | err_rhashtable_init: | |
191 | kfree(fib); | |
192 | return ERR_PTR(err); | |
193 | } | |
194 | ||
195 | static void mlxsw_sp_fib_destroy(struct mlxsw_sp_fib *fib) | |
196 | { | |
9aecce1c | 197 | WARN_ON(!list_empty(&fib->node_list)); |
76610ebb | 198 | WARN_ON(fib->lpm_tree); |
5e9c16cc JP |
199 | rhashtable_destroy(&fib->ht); |
200 | kfree(fib); | |
201 | } | |
202 | ||
53342023 | 203 | static struct mlxsw_sp_lpm_tree * |
382dbb40 | 204 | mlxsw_sp_lpm_tree_find_unused(struct mlxsw_sp *mlxsw_sp) |
53342023 JP |
205 | { |
206 | static struct mlxsw_sp_lpm_tree *lpm_tree; | |
207 | int i; | |
208 | ||
209 | for (i = 0; i < MLXSW_SP_LPM_TREE_COUNT; i++) { | |
210 | lpm_tree = &mlxsw_sp->router.lpm_trees[i]; | |
382dbb40 IS |
211 | if (lpm_tree->ref_count == 0) |
212 | return lpm_tree; | |
53342023 JP |
213 | } |
214 | return NULL; | |
215 | } | |
216 | ||
217 | static int mlxsw_sp_lpm_tree_alloc(struct mlxsw_sp *mlxsw_sp, | |
218 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
219 | { | |
220 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
221 | ||
1a9234e6 IS |
222 | mlxsw_reg_ralta_pack(ralta_pl, true, |
223 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
224 | lpm_tree->id); | |
53342023 JP |
225 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
226 | } | |
227 | ||
228 | static int mlxsw_sp_lpm_tree_free(struct mlxsw_sp *mlxsw_sp, | |
229 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
230 | { | |
231 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
232 | ||
1a9234e6 IS |
233 | mlxsw_reg_ralta_pack(ralta_pl, false, |
234 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
235 | lpm_tree->id); | |
53342023 JP |
236 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
237 | } | |
238 | ||
239 | static int | |
240 | mlxsw_sp_lpm_tree_left_struct_set(struct mlxsw_sp *mlxsw_sp, | |
241 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
242 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
243 | { | |
244 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
245 | u8 root_bin = 0; | |
246 | u8 prefix; | |
247 | u8 last_prefix = MLXSW_REG_RALST_BIN_NO_CHILD; | |
248 | ||
249 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) | |
250 | root_bin = prefix; | |
251 | ||
252 | mlxsw_reg_ralst_pack(ralst_pl, root_bin, lpm_tree->id); | |
253 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) { | |
254 | if (prefix == 0) | |
255 | continue; | |
256 | mlxsw_reg_ralst_bin_pack(ralst_pl, prefix, last_prefix, | |
257 | MLXSW_REG_RALST_BIN_NO_CHILD); | |
258 | last_prefix = prefix; | |
259 | } | |
260 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); | |
261 | } | |
262 | ||
263 | static struct mlxsw_sp_lpm_tree * | |
264 | mlxsw_sp_lpm_tree_create(struct mlxsw_sp *mlxsw_sp, | |
265 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 266 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
267 | { |
268 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
269 | int err; | |
270 | ||
382dbb40 | 271 | lpm_tree = mlxsw_sp_lpm_tree_find_unused(mlxsw_sp); |
53342023 JP |
272 | if (!lpm_tree) |
273 | return ERR_PTR(-EBUSY); | |
274 | lpm_tree->proto = proto; | |
275 | err = mlxsw_sp_lpm_tree_alloc(mlxsw_sp, lpm_tree); | |
276 | if (err) | |
277 | return ERR_PTR(err); | |
278 | ||
279 | err = mlxsw_sp_lpm_tree_left_struct_set(mlxsw_sp, prefix_usage, | |
280 | lpm_tree); | |
281 | if (err) | |
282 | goto err_left_struct_set; | |
2083d367 JP |
283 | memcpy(&lpm_tree->prefix_usage, prefix_usage, |
284 | sizeof(lpm_tree->prefix_usage)); | |
53342023 JP |
285 | return lpm_tree; |
286 | ||
287 | err_left_struct_set: | |
288 | mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); | |
289 | return ERR_PTR(err); | |
290 | } | |
291 | ||
292 | static int mlxsw_sp_lpm_tree_destroy(struct mlxsw_sp *mlxsw_sp, | |
293 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
294 | { | |
295 | return mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); | |
296 | } | |
297 | ||
298 | static struct mlxsw_sp_lpm_tree * | |
299 | mlxsw_sp_lpm_tree_get(struct mlxsw_sp *mlxsw_sp, | |
300 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 301 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
302 | { |
303 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
304 | int i; | |
305 | ||
306 | for (i = 0; i < MLXSW_SP_LPM_TREE_COUNT; i++) { | |
307 | lpm_tree = &mlxsw_sp->router.lpm_trees[i]; | |
8b99becd JP |
308 | if (lpm_tree->ref_count != 0 && |
309 | lpm_tree->proto == proto && | |
53342023 JP |
310 | mlxsw_sp_prefix_usage_eq(&lpm_tree->prefix_usage, |
311 | prefix_usage)) | |
312 | goto inc_ref_count; | |
313 | } | |
314 | lpm_tree = mlxsw_sp_lpm_tree_create(mlxsw_sp, prefix_usage, | |
382dbb40 | 315 | proto); |
53342023 JP |
316 | if (IS_ERR(lpm_tree)) |
317 | return lpm_tree; | |
318 | ||
319 | inc_ref_count: | |
320 | lpm_tree->ref_count++; | |
321 | return lpm_tree; | |
322 | } | |
323 | ||
324 | static int mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp, | |
325 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
326 | { | |
327 | if (--lpm_tree->ref_count == 0) | |
328 | return mlxsw_sp_lpm_tree_destroy(mlxsw_sp, lpm_tree); | |
329 | return 0; | |
330 | } | |
331 | ||
332 | static void mlxsw_sp_lpm_init(struct mlxsw_sp *mlxsw_sp) | |
333 | { | |
334 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
335 | int i; | |
336 | ||
337 | for (i = 0; i < MLXSW_SP_LPM_TREE_COUNT; i++) { | |
338 | lpm_tree = &mlxsw_sp->router.lpm_trees[i]; | |
339 | lpm_tree->id = i + MLXSW_SP_LPM_TREE_MIN; | |
340 | } | |
341 | } | |
342 | ||
76610ebb IS |
343 | static bool mlxsw_sp_vr_is_used(const struct mlxsw_sp_vr *vr) |
344 | { | |
345 | return !!vr->fib4; | |
346 | } | |
347 | ||
6b75c480 JP |
348 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find_unused(struct mlxsw_sp *mlxsw_sp) |
349 | { | |
350 | struct mlxsw_sp_vr *vr; | |
351 | int i; | |
352 | ||
c1a38311 | 353 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
6b75c480 | 354 | vr = &mlxsw_sp->router.vrs[i]; |
76610ebb | 355 | if (!mlxsw_sp_vr_is_used(vr)) |
6b75c480 JP |
356 | return vr; |
357 | } | |
358 | return NULL; | |
359 | } | |
360 | ||
361 | static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 362 | const struct mlxsw_sp_fib *fib) |
6b75c480 JP |
363 | { |
364 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
365 | ||
76610ebb IS |
366 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
367 | (enum mlxsw_reg_ralxx_protocol) fib->proto, | |
368 | fib->lpm_tree->id); | |
6b75c480 JP |
369 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
370 | } | |
371 | ||
372 | static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 373 | const struct mlxsw_sp_fib *fib) |
6b75c480 JP |
374 | { |
375 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
376 | ||
377 | /* Bind to tree 0 which is default */ | |
76610ebb IS |
378 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
379 | (enum mlxsw_reg_ralxx_protocol) fib->proto, 0); | |
6b75c480 JP |
380 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
381 | } | |
382 | ||
383 | static u32 mlxsw_sp_fix_tb_id(u32 tb_id) | |
384 | { | |
385 | /* For our purpose, squash main and local table into one */ | |
386 | if (tb_id == RT_TABLE_LOCAL) | |
387 | tb_id = RT_TABLE_MAIN; | |
388 | return tb_id; | |
389 | } | |
390 | ||
391 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 392 | u32 tb_id) |
6b75c480 JP |
393 | { |
394 | struct mlxsw_sp_vr *vr; | |
395 | int i; | |
396 | ||
397 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
9497c042 | 398 | |
c1a38311 | 399 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
6b75c480 | 400 | vr = &mlxsw_sp->router.vrs[i]; |
76610ebb | 401 | if (mlxsw_sp_vr_is_used(vr) && vr->tb_id == tb_id) |
6b75c480 JP |
402 | return vr; |
403 | } | |
404 | return NULL; | |
405 | } | |
406 | ||
76610ebb IS |
407 | static struct mlxsw_sp_fib *mlxsw_sp_vr_fib(const struct mlxsw_sp_vr *vr, |
408 | enum mlxsw_sp_l3proto proto) | |
409 | { | |
410 | switch (proto) { | |
411 | case MLXSW_SP_L3_PROTO_IPV4: | |
412 | return vr->fib4; | |
413 | case MLXSW_SP_L3_PROTO_IPV6: | |
414 | BUG_ON(1); | |
415 | } | |
416 | return NULL; | |
417 | } | |
418 | ||
6b75c480 | 419 | static struct mlxsw_sp_vr *mlxsw_sp_vr_create(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 420 | u32 tb_id) |
6b75c480 | 421 | { |
6b75c480 | 422 | struct mlxsw_sp_vr *vr; |
6b75c480 JP |
423 | |
424 | vr = mlxsw_sp_vr_find_unused(mlxsw_sp); | |
425 | if (!vr) | |
426 | return ERR_PTR(-EBUSY); | |
76610ebb IS |
427 | vr->fib4 = mlxsw_sp_fib_create(vr, MLXSW_SP_L3_PROTO_IPV4); |
428 | if (IS_ERR(vr->fib4)) | |
429 | return ERR_CAST(vr->fib4); | |
6b75c480 | 430 | vr->tb_id = tb_id; |
6b75c480 | 431 | return vr; |
6b75c480 JP |
432 | } |
433 | ||
76610ebb | 434 | static void mlxsw_sp_vr_destroy(struct mlxsw_sp_vr *vr) |
6b75c480 | 435 | { |
76610ebb IS |
436 | mlxsw_sp_fib_destroy(vr->fib4); |
437 | vr->fib4 = NULL; | |
6b75c480 JP |
438 | } |
439 | ||
440 | static int | |
76610ebb | 441 | mlxsw_sp_vr_lpm_tree_check(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fib *fib, |
6b75c480 JP |
442 | struct mlxsw_sp_prefix_usage *req_prefix_usage) |
443 | { | |
76610ebb | 444 | struct mlxsw_sp_lpm_tree *lpm_tree = fib->lpm_tree; |
f7df4923 IS |
445 | struct mlxsw_sp_lpm_tree *new_tree; |
446 | int err; | |
6b75c480 | 447 | |
f7df4923 | 448 | if (mlxsw_sp_prefix_usage_eq(req_prefix_usage, &lpm_tree->prefix_usage)) |
6b75c480 JP |
449 | return 0; |
450 | ||
f7df4923 | 451 | new_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, req_prefix_usage, |
76610ebb | 452 | fib->proto); |
f7df4923 | 453 | if (IS_ERR(new_tree)) { |
6b75c480 JP |
454 | /* We failed to get a tree according to the required |
455 | * prefix usage. However, the current tree might be still good | |
456 | * for us if our requirement is subset of the prefixes used | |
457 | * in the tree. | |
458 | */ | |
459 | if (mlxsw_sp_prefix_usage_subset(req_prefix_usage, | |
f7df4923 | 460 | &lpm_tree->prefix_usage)) |
6b75c480 | 461 | return 0; |
f7df4923 | 462 | return PTR_ERR(new_tree); |
6b75c480 JP |
463 | } |
464 | ||
f7df4923 | 465 | /* Prevent packet loss by overwriting existing binding */ |
76610ebb IS |
466 | fib->lpm_tree = new_tree; |
467 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib); | |
f7df4923 IS |
468 | if (err) |
469 | goto err_tree_bind; | |
470 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
471 | ||
472 | return 0; | |
473 | ||
474 | err_tree_bind: | |
76610ebb | 475 | fib->lpm_tree = lpm_tree; |
f7df4923 IS |
476 | mlxsw_sp_lpm_tree_put(mlxsw_sp, new_tree); |
477 | return err; | |
6b75c480 JP |
478 | } |
479 | ||
76610ebb | 480 | static struct mlxsw_sp_vr *mlxsw_sp_vr_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id) |
6b75c480 JP |
481 | { |
482 | struct mlxsw_sp_vr *vr; | |
6b75c480 JP |
483 | |
484 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
76610ebb IS |
485 | vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id); |
486 | if (!vr) | |
487 | vr = mlxsw_sp_vr_create(mlxsw_sp, tb_id); | |
6b75c480 JP |
488 | return vr; |
489 | } | |
490 | ||
76610ebb | 491 | static void mlxsw_sp_vr_put(struct mlxsw_sp_vr *vr) |
6b75c480 | 492 | { |
6913229e | 493 | if (!vr->rif_count && list_empty(&vr->fib4->node_list)) |
76610ebb | 494 | mlxsw_sp_vr_destroy(vr); |
6b75c480 JP |
495 | } |
496 | ||
9497c042 | 497 | static int mlxsw_sp_vrs_init(struct mlxsw_sp *mlxsw_sp) |
6b75c480 JP |
498 | { |
499 | struct mlxsw_sp_vr *vr; | |
c1a38311 | 500 | u64 max_vrs; |
6b75c480 JP |
501 | int i; |
502 | ||
c1a38311 | 503 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_VRS)) |
9497c042 NF |
504 | return -EIO; |
505 | ||
c1a38311 JP |
506 | max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); |
507 | mlxsw_sp->router.vrs = kcalloc(max_vrs, sizeof(struct mlxsw_sp_vr), | |
9497c042 NF |
508 | GFP_KERNEL); |
509 | if (!mlxsw_sp->router.vrs) | |
510 | return -ENOMEM; | |
511 | ||
c1a38311 | 512 | for (i = 0; i < max_vrs; i++) { |
6b75c480 JP |
513 | vr = &mlxsw_sp->router.vrs[i]; |
514 | vr->id = i; | |
515 | } | |
9497c042 NF |
516 | |
517 | return 0; | |
518 | } | |
519 | ||
ac571de9 IS |
520 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp); |
521 | ||
9497c042 NF |
522 | static void mlxsw_sp_vrs_fini(struct mlxsw_sp *mlxsw_sp) |
523 | { | |
3057224e IS |
524 | /* At this stage we're guaranteed not to have new incoming |
525 | * FIB notifications and the work queue is free from FIBs | |
526 | * sitting on top of mlxsw netdevs. However, we can still | |
527 | * have other FIBs queued. Flush the queue before flushing | |
528 | * the device's tables. No need for locks, as we're the only | |
529 | * writer. | |
530 | */ | |
531 | mlxsw_core_flush_owq(); | |
ac571de9 | 532 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
9497c042 | 533 | kfree(mlxsw_sp->router.vrs); |
6b75c480 JP |
534 | } |
535 | ||
6cf3c971 | 536 | struct mlxsw_sp_neigh_key { |
33b1341c | 537 | struct neighbour *n; |
6cf3c971 JP |
538 | }; |
539 | ||
540 | struct mlxsw_sp_neigh_entry { | |
9665b745 | 541 | struct list_head rif_list_node; |
6cf3c971 JP |
542 | struct rhash_head ht_node; |
543 | struct mlxsw_sp_neigh_key key; | |
544 | u16 rif; | |
5c8802f1 | 545 | bool connected; |
a6bf9e93 | 546 | unsigned char ha[ETH_ALEN]; |
a7ff87ac JP |
547 | struct list_head nexthop_list; /* list of nexthops using |
548 | * this neigh entry | |
549 | */ | |
b2157149 | 550 | struct list_head nexthop_neighs_list_node; |
6cf3c971 JP |
551 | }; |
552 | ||
553 | static const struct rhashtable_params mlxsw_sp_neigh_ht_params = { | |
554 | .key_offset = offsetof(struct mlxsw_sp_neigh_entry, key), | |
555 | .head_offset = offsetof(struct mlxsw_sp_neigh_entry, ht_node), | |
556 | .key_len = sizeof(struct mlxsw_sp_neigh_key), | |
557 | }; | |
558 | ||
6cf3c971 | 559 | static struct mlxsw_sp_neigh_entry * |
5c8802f1 IS |
560 | mlxsw_sp_neigh_entry_alloc(struct mlxsw_sp *mlxsw_sp, struct neighbour *n, |
561 | u16 rif) | |
6cf3c971 JP |
562 | { |
563 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
564 | ||
5c8802f1 | 565 | neigh_entry = kzalloc(sizeof(*neigh_entry), GFP_KERNEL); |
6cf3c971 JP |
566 | if (!neigh_entry) |
567 | return NULL; | |
5c8802f1 | 568 | |
33b1341c | 569 | neigh_entry->key.n = n; |
6cf3c971 | 570 | neigh_entry->rif = rif; |
a7ff87ac | 571 | INIT_LIST_HEAD(&neigh_entry->nexthop_list); |
5c8802f1 | 572 | |
6cf3c971 JP |
573 | return neigh_entry; |
574 | } | |
575 | ||
5c8802f1 | 576 | static void mlxsw_sp_neigh_entry_free(struct mlxsw_sp_neigh_entry *neigh_entry) |
6cf3c971 JP |
577 | { |
578 | kfree(neigh_entry); | |
579 | } | |
580 | ||
5c8802f1 IS |
581 | static int |
582 | mlxsw_sp_neigh_entry_insert(struct mlxsw_sp *mlxsw_sp, | |
583 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 584 | { |
5c8802f1 IS |
585 | return rhashtable_insert_fast(&mlxsw_sp->router.neigh_ht, |
586 | &neigh_entry->ht_node, | |
587 | mlxsw_sp_neigh_ht_params); | |
588 | } | |
6cf3c971 | 589 | |
5c8802f1 IS |
590 | static void |
591 | mlxsw_sp_neigh_entry_remove(struct mlxsw_sp *mlxsw_sp, | |
592 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
593 | { | |
594 | rhashtable_remove_fast(&mlxsw_sp->router.neigh_ht, | |
595 | &neigh_entry->ht_node, | |
596 | mlxsw_sp_neigh_ht_params); | |
6cf3c971 JP |
597 | } |
598 | ||
5c8802f1 IS |
599 | static struct mlxsw_sp_neigh_entry * |
600 | mlxsw_sp_neigh_entry_create(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
6cf3c971 | 601 | { |
6cf3c971 JP |
602 | struct mlxsw_sp_neigh_entry *neigh_entry; |
603 | struct mlxsw_sp_rif *r; | |
6cf3c971 JP |
604 | int err; |
605 | ||
51af96b5 | 606 | r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, n->dev); |
5c8802f1 IS |
607 | if (!r) |
608 | return ERR_PTR(-EINVAL); | |
6cf3c971 | 609 | |
5c8802f1 | 610 | neigh_entry = mlxsw_sp_neigh_entry_alloc(mlxsw_sp, n, r->rif); |
6cf3c971 | 611 | if (!neigh_entry) |
5c8802f1 IS |
612 | return ERR_PTR(-ENOMEM); |
613 | ||
6cf3c971 JP |
614 | err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry); |
615 | if (err) | |
616 | goto err_neigh_entry_insert; | |
5c8802f1 | 617 | |
9665b745 IS |
618 | list_add(&neigh_entry->rif_list_node, &r->neigh_list); |
619 | ||
5c8802f1 | 620 | return neigh_entry; |
6cf3c971 JP |
621 | |
622 | err_neigh_entry_insert: | |
5c8802f1 IS |
623 | mlxsw_sp_neigh_entry_free(neigh_entry); |
624 | return ERR_PTR(err); | |
6cf3c971 JP |
625 | } |
626 | ||
5c8802f1 IS |
627 | static void |
628 | mlxsw_sp_neigh_entry_destroy(struct mlxsw_sp *mlxsw_sp, | |
629 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 630 | { |
9665b745 | 631 | list_del(&neigh_entry->rif_list_node); |
5c8802f1 IS |
632 | mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry); |
633 | mlxsw_sp_neigh_entry_free(neigh_entry); | |
634 | } | |
6cf3c971 | 635 | |
5c8802f1 IS |
636 | static struct mlxsw_sp_neigh_entry * |
637 | mlxsw_sp_neigh_entry_lookup(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
638 | { | |
639 | struct mlxsw_sp_neigh_key key; | |
6cf3c971 | 640 | |
5c8802f1 IS |
641 | key.n = n; |
642 | return rhashtable_lookup_fast(&mlxsw_sp->router.neigh_ht, | |
643 | &key, mlxsw_sp_neigh_ht_params); | |
6cf3c971 JP |
644 | } |
645 | ||
c723c735 YG |
646 | static void |
647 | mlxsw_sp_router_neighs_update_interval_init(struct mlxsw_sp *mlxsw_sp) | |
648 | { | |
649 | unsigned long interval = NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME); | |
650 | ||
651 | mlxsw_sp->router.neighs_update.interval = jiffies_to_msecs(interval); | |
652 | } | |
653 | ||
654 | static void mlxsw_sp_router_neigh_ent_ipv4_process(struct mlxsw_sp *mlxsw_sp, | |
655 | char *rauhtd_pl, | |
656 | int ent_index) | |
657 | { | |
658 | struct net_device *dev; | |
659 | struct neighbour *n; | |
660 | __be32 dipn; | |
661 | u32 dip; | |
662 | u16 rif; | |
663 | ||
664 | mlxsw_reg_rauhtd_ent_ipv4_unpack(rauhtd_pl, ent_index, &rif, &dip); | |
665 | ||
666 | if (!mlxsw_sp->rifs[rif]) { | |
667 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n"); | |
668 | return; | |
669 | } | |
670 | ||
671 | dipn = htonl(dip); | |
672 | dev = mlxsw_sp->rifs[rif]->dev; | |
673 | n = neigh_lookup(&arp_tbl, &dipn, dev); | |
674 | if (!n) { | |
675 | netdev_err(dev, "Failed to find matching neighbour for IP=%pI4h\n", | |
676 | &dip); | |
677 | return; | |
678 | } | |
679 | ||
680 | netdev_dbg(dev, "Updating neighbour with IP=%pI4h\n", &dip); | |
681 | neigh_event_send(n, NULL); | |
682 | neigh_release(n); | |
683 | } | |
684 | ||
685 | static void mlxsw_sp_router_neigh_rec_ipv4_process(struct mlxsw_sp *mlxsw_sp, | |
686 | char *rauhtd_pl, | |
687 | int rec_index) | |
688 | { | |
689 | u8 num_entries; | |
690 | int i; | |
691 | ||
692 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
693 | rec_index); | |
694 | /* Hardware starts counting at 0, so add 1. */ | |
695 | num_entries++; | |
696 | ||
697 | /* Each record consists of several neighbour entries. */ | |
698 | for (i = 0; i < num_entries; i++) { | |
699 | int ent_index; | |
700 | ||
701 | ent_index = rec_index * MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC + i; | |
702 | mlxsw_sp_router_neigh_ent_ipv4_process(mlxsw_sp, rauhtd_pl, | |
703 | ent_index); | |
704 | } | |
705 | ||
706 | } | |
707 | ||
708 | static void mlxsw_sp_router_neigh_rec_process(struct mlxsw_sp *mlxsw_sp, | |
709 | char *rauhtd_pl, int rec_index) | |
710 | { | |
711 | switch (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, rec_index)) { | |
712 | case MLXSW_REG_RAUHTD_TYPE_IPV4: | |
713 | mlxsw_sp_router_neigh_rec_ipv4_process(mlxsw_sp, rauhtd_pl, | |
714 | rec_index); | |
715 | break; | |
716 | case MLXSW_REG_RAUHTD_TYPE_IPV6: | |
717 | WARN_ON_ONCE(1); | |
718 | break; | |
719 | } | |
720 | } | |
721 | ||
42cdb338 AS |
722 | static bool mlxsw_sp_router_rauhtd_is_full(char *rauhtd_pl) |
723 | { | |
724 | u8 num_rec, last_rec_index, num_entries; | |
725 | ||
726 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
727 | last_rec_index = num_rec - 1; | |
728 | ||
729 | if (num_rec < MLXSW_REG_RAUHTD_REC_MAX_NUM) | |
730 | return false; | |
731 | if (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, last_rec_index) == | |
732 | MLXSW_REG_RAUHTD_TYPE_IPV6) | |
733 | return true; | |
734 | ||
735 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
736 | last_rec_index); | |
737 | if (++num_entries == MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC) | |
738 | return true; | |
739 | return false; | |
740 | } | |
741 | ||
b2157149 | 742 | static int mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp) |
c723c735 | 743 | { |
c723c735 YG |
744 | char *rauhtd_pl; |
745 | u8 num_rec; | |
746 | int i, err; | |
747 | ||
748 | rauhtd_pl = kmalloc(MLXSW_REG_RAUHTD_LEN, GFP_KERNEL); | |
749 | if (!rauhtd_pl) | |
b2157149 | 750 | return -ENOMEM; |
c723c735 YG |
751 | |
752 | /* Make sure the neighbour's netdev isn't removed in the | |
753 | * process. | |
754 | */ | |
755 | rtnl_lock(); | |
756 | do { | |
757 | mlxsw_reg_rauhtd_pack(rauhtd_pl, MLXSW_REG_RAUHTD_TYPE_IPV4); | |
758 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(rauhtd), | |
759 | rauhtd_pl); | |
760 | if (err) { | |
761 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to dump neighbour talbe\n"); | |
762 | break; | |
763 | } | |
764 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
765 | for (i = 0; i < num_rec; i++) | |
766 | mlxsw_sp_router_neigh_rec_process(mlxsw_sp, rauhtd_pl, | |
767 | i); | |
42cdb338 | 768 | } while (mlxsw_sp_router_rauhtd_is_full(rauhtd_pl)); |
c723c735 YG |
769 | rtnl_unlock(); |
770 | ||
771 | kfree(rauhtd_pl); | |
b2157149 YG |
772 | return err; |
773 | } | |
774 | ||
775 | static void mlxsw_sp_router_neighs_update_nh(struct mlxsw_sp *mlxsw_sp) | |
776 | { | |
777 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
778 | ||
779 | /* Take RTNL mutex here to prevent lists from changes */ | |
780 | rtnl_lock(); | |
781 | list_for_each_entry(neigh_entry, &mlxsw_sp->router.nexthop_neighs_list, | |
8a0b7275 | 782 | nexthop_neighs_list_node) |
b2157149 YG |
783 | /* If this neigh have nexthops, make the kernel think this neigh |
784 | * is active regardless of the traffic. | |
785 | */ | |
8a0b7275 | 786 | neigh_event_send(neigh_entry->key.n, NULL); |
b2157149 YG |
787 | rtnl_unlock(); |
788 | } | |
789 | ||
790 | static void | |
791 | mlxsw_sp_router_neighs_update_work_schedule(struct mlxsw_sp *mlxsw_sp) | |
792 | { | |
793 | unsigned long interval = mlxsw_sp->router.neighs_update.interval; | |
794 | ||
795 | mlxsw_core_schedule_dw(&mlxsw_sp->router.neighs_update.dw, | |
796 | msecs_to_jiffies(interval)); | |
797 | } | |
798 | ||
799 | static void mlxsw_sp_router_neighs_update_work(struct work_struct *work) | |
800 | { | |
801 | struct mlxsw_sp *mlxsw_sp = container_of(work, struct mlxsw_sp, | |
802 | router.neighs_update.dw.work); | |
803 | int err; | |
804 | ||
805 | err = mlxsw_sp_router_neighs_update_rauhtd(mlxsw_sp); | |
806 | if (err) | |
807 | dev_err(mlxsw_sp->bus_info->dev, "Could not update kernel for neigh activity"); | |
808 | ||
809 | mlxsw_sp_router_neighs_update_nh(mlxsw_sp); | |
810 | ||
c723c735 YG |
811 | mlxsw_sp_router_neighs_update_work_schedule(mlxsw_sp); |
812 | } | |
813 | ||
0b2361d9 YG |
814 | static void mlxsw_sp_router_probe_unresolved_nexthops(struct work_struct *work) |
815 | { | |
816 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
817 | struct mlxsw_sp *mlxsw_sp = container_of(work, struct mlxsw_sp, | |
818 | router.nexthop_probe_dw.work); | |
819 | ||
820 | /* Iterate over nexthop neighbours, find those who are unresolved and | |
821 | * send arp on them. This solves the chicken-egg problem when | |
822 | * the nexthop wouldn't get offloaded until the neighbor is resolved | |
823 | * but it wouldn't get resolved ever in case traffic is flowing in HW | |
824 | * using different nexthop. | |
825 | * | |
826 | * Take RTNL mutex here to prevent lists from changes. | |
827 | */ | |
828 | rtnl_lock(); | |
829 | list_for_each_entry(neigh_entry, &mlxsw_sp->router.nexthop_neighs_list, | |
8a0b7275 | 830 | nexthop_neighs_list_node) |
01b1aa35 | 831 | if (!neigh_entry->connected) |
33b1341c | 832 | neigh_event_send(neigh_entry->key.n, NULL); |
0b2361d9 YG |
833 | rtnl_unlock(); |
834 | ||
835 | mlxsw_core_schedule_dw(&mlxsw_sp->router.nexthop_probe_dw, | |
836 | MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL); | |
837 | } | |
838 | ||
a7ff87ac JP |
839 | static void |
840 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
841 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
842 | bool removing); | |
843 | ||
5c8802f1 IS |
844 | static enum mlxsw_reg_rauht_op mlxsw_sp_rauht_op(bool adding) |
845 | { | |
846 | return adding ? MLXSW_REG_RAUHT_OP_WRITE_ADD : | |
847 | MLXSW_REG_RAUHT_OP_WRITE_DELETE; | |
848 | } | |
849 | ||
850 | static void | |
851 | mlxsw_sp_router_neigh_entry_op4(struct mlxsw_sp *mlxsw_sp, | |
852 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
853 | enum mlxsw_reg_rauht_op op) | |
a6bf9e93 | 854 | { |
33b1341c | 855 | struct neighbour *n = neigh_entry->key.n; |
5c8802f1 | 856 | u32 dip = ntohl(*((__be32 *) n->primary_key)); |
a6bf9e93 | 857 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; |
5c8802f1 IS |
858 | |
859 | mlxsw_reg_rauht_pack4(rauht_pl, op, neigh_entry->rif, neigh_entry->ha, | |
860 | dip); | |
861 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); | |
862 | } | |
863 | ||
864 | static void | |
865 | mlxsw_sp_neigh_entry_update(struct mlxsw_sp *mlxsw_sp, | |
866 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
867 | bool adding) | |
868 | { | |
869 | if (!adding && !neigh_entry->connected) | |
870 | return; | |
871 | neigh_entry->connected = adding; | |
872 | if (neigh_entry->key.n->tbl == &arp_tbl) | |
873 | mlxsw_sp_router_neigh_entry_op4(mlxsw_sp, neigh_entry, | |
874 | mlxsw_sp_rauht_op(adding)); | |
875 | else | |
876 | WARN_ON_ONCE(1); | |
877 | } | |
878 | ||
879 | struct mlxsw_sp_neigh_event_work { | |
880 | struct work_struct work; | |
881 | struct mlxsw_sp *mlxsw_sp; | |
882 | struct neighbour *n; | |
883 | }; | |
884 | ||
885 | static void mlxsw_sp_router_neigh_event_work(struct work_struct *work) | |
886 | { | |
887 | struct mlxsw_sp_neigh_event_work *neigh_work = | |
888 | container_of(work, struct mlxsw_sp_neigh_event_work, work); | |
889 | struct mlxsw_sp *mlxsw_sp = neigh_work->mlxsw_sp; | |
890 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
891 | struct neighbour *n = neigh_work->n; | |
892 | unsigned char ha[ETH_ALEN]; | |
a6bf9e93 | 893 | bool entry_connected; |
93a87e5e | 894 | u8 nud_state, dead; |
a6bf9e93 | 895 | |
5c8802f1 IS |
896 | /* If these parameters are changed after we release the lock, |
897 | * then we are guaranteed to receive another event letting us | |
898 | * know about it. | |
899 | */ | |
a6bf9e93 | 900 | read_lock_bh(&n->lock); |
5c8802f1 | 901 | memcpy(ha, n->ha, ETH_ALEN); |
a6bf9e93 | 902 | nud_state = n->nud_state; |
93a87e5e | 903 | dead = n->dead; |
a6bf9e93 YG |
904 | read_unlock_bh(&n->lock); |
905 | ||
5c8802f1 | 906 | rtnl_lock(); |
93a87e5e | 907 | entry_connected = nud_state & NUD_VALID && !dead; |
5c8802f1 IS |
908 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); |
909 | if (!entry_connected && !neigh_entry) | |
910 | goto out; | |
911 | if (!neigh_entry) { | |
912 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); | |
913 | if (IS_ERR(neigh_entry)) | |
914 | goto out; | |
a6bf9e93 YG |
915 | } |
916 | ||
5c8802f1 IS |
917 | memcpy(neigh_entry->ha, ha, ETH_ALEN); |
918 | mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, entry_connected); | |
919 | mlxsw_sp_nexthop_neigh_update(mlxsw_sp, neigh_entry, !entry_connected); | |
920 | ||
921 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) | |
922 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
923 | ||
924 | out: | |
925 | rtnl_unlock(); | |
a6bf9e93 | 926 | neigh_release(n); |
5c8802f1 | 927 | kfree(neigh_work); |
a6bf9e93 YG |
928 | } |
929 | ||
e7322638 JP |
930 | int mlxsw_sp_router_netevent_event(struct notifier_block *unused, |
931 | unsigned long event, void *ptr) | |
c723c735 | 932 | { |
5c8802f1 | 933 | struct mlxsw_sp_neigh_event_work *neigh_work; |
c723c735 YG |
934 | struct mlxsw_sp_port *mlxsw_sp_port; |
935 | struct mlxsw_sp *mlxsw_sp; | |
936 | unsigned long interval; | |
937 | struct neigh_parms *p; | |
a6bf9e93 | 938 | struct neighbour *n; |
c723c735 YG |
939 | |
940 | switch (event) { | |
941 | case NETEVENT_DELAY_PROBE_TIME_UPDATE: | |
942 | p = ptr; | |
943 | ||
944 | /* We don't care about changes in the default table. */ | |
945 | if (!p->dev || p->tbl != &arp_tbl) | |
946 | return NOTIFY_DONE; | |
947 | ||
948 | /* We are in atomic context and can't take RTNL mutex, | |
949 | * so use RCU variant to walk the device chain. | |
950 | */ | |
951 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(p->dev); | |
952 | if (!mlxsw_sp_port) | |
953 | return NOTIFY_DONE; | |
954 | ||
955 | mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
956 | interval = jiffies_to_msecs(NEIGH_VAR(p, DELAY_PROBE_TIME)); | |
957 | mlxsw_sp->router.neighs_update.interval = interval; | |
958 | ||
959 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
960 | break; | |
a6bf9e93 YG |
961 | case NETEVENT_NEIGH_UPDATE: |
962 | n = ptr; | |
a6bf9e93 YG |
963 | |
964 | if (n->tbl != &arp_tbl) | |
965 | return NOTIFY_DONE; | |
966 | ||
5c8802f1 | 967 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(n->dev); |
a6bf9e93 YG |
968 | if (!mlxsw_sp_port) |
969 | return NOTIFY_DONE; | |
970 | ||
5c8802f1 IS |
971 | neigh_work = kzalloc(sizeof(*neigh_work), GFP_ATOMIC); |
972 | if (!neigh_work) { | |
a6bf9e93 | 973 | mlxsw_sp_port_dev_put(mlxsw_sp_port); |
5c8802f1 | 974 | return NOTIFY_BAD; |
a6bf9e93 | 975 | } |
5c8802f1 IS |
976 | |
977 | INIT_WORK(&neigh_work->work, mlxsw_sp_router_neigh_event_work); | |
978 | neigh_work->mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
979 | neigh_work->n = n; | |
a6bf9e93 YG |
980 | |
981 | /* Take a reference to ensure the neighbour won't be | |
982 | * destructed until we drop the reference in delayed | |
983 | * work. | |
984 | */ | |
985 | neigh_clone(n); | |
5c8802f1 IS |
986 | mlxsw_core_schedule_work(&neigh_work->work); |
987 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
a6bf9e93 | 988 | break; |
c723c735 YG |
989 | } |
990 | ||
991 | return NOTIFY_DONE; | |
992 | } | |
993 | ||
6cf3c971 JP |
994 | static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp) |
995 | { | |
c723c735 YG |
996 | int err; |
997 | ||
998 | err = rhashtable_init(&mlxsw_sp->router.neigh_ht, | |
999 | &mlxsw_sp_neigh_ht_params); | |
1000 | if (err) | |
1001 | return err; | |
1002 | ||
1003 | /* Initialize the polling interval according to the default | |
1004 | * table. | |
1005 | */ | |
1006 | mlxsw_sp_router_neighs_update_interval_init(mlxsw_sp); | |
1007 | ||
0b2361d9 | 1008 | /* Create the delayed works for the activity_update */ |
c723c735 YG |
1009 | INIT_DELAYED_WORK(&mlxsw_sp->router.neighs_update.dw, |
1010 | mlxsw_sp_router_neighs_update_work); | |
0b2361d9 YG |
1011 | INIT_DELAYED_WORK(&mlxsw_sp->router.nexthop_probe_dw, |
1012 | mlxsw_sp_router_probe_unresolved_nexthops); | |
c723c735 | 1013 | mlxsw_core_schedule_dw(&mlxsw_sp->router.neighs_update.dw, 0); |
0b2361d9 | 1014 | mlxsw_core_schedule_dw(&mlxsw_sp->router.nexthop_probe_dw, 0); |
c723c735 | 1015 | return 0; |
6cf3c971 JP |
1016 | } |
1017 | ||
1018 | static void mlxsw_sp_neigh_fini(struct mlxsw_sp *mlxsw_sp) | |
1019 | { | |
c723c735 | 1020 | cancel_delayed_work_sync(&mlxsw_sp->router.neighs_update.dw); |
0b2361d9 | 1021 | cancel_delayed_work_sync(&mlxsw_sp->router.nexthop_probe_dw); |
6cf3c971 JP |
1022 | rhashtable_destroy(&mlxsw_sp->router.neigh_ht); |
1023 | } | |
1024 | ||
9665b745 IS |
1025 | static int mlxsw_sp_neigh_rif_flush(struct mlxsw_sp *mlxsw_sp, |
1026 | const struct mlxsw_sp_rif *r) | |
1027 | { | |
1028 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; | |
1029 | ||
1030 | mlxsw_reg_rauht_pack(rauht_pl, MLXSW_REG_RAUHT_OP_WRITE_DELETE_ALL, | |
1031 | r->rif, r->addr); | |
1032 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); | |
1033 | } | |
1034 | ||
1035 | static void mlxsw_sp_neigh_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
1036 | struct mlxsw_sp_rif *r) | |
1037 | { | |
1038 | struct mlxsw_sp_neigh_entry *neigh_entry, *tmp; | |
1039 | ||
1040 | mlxsw_sp_neigh_rif_flush(mlxsw_sp, r); | |
1041 | list_for_each_entry_safe(neigh_entry, tmp, &r->neigh_list, | |
1042 | rif_list_node) | |
1043 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1044 | } | |
1045 | ||
c53b8e1b IS |
1046 | struct mlxsw_sp_nexthop_key { |
1047 | struct fib_nh *fib_nh; | |
1048 | }; | |
1049 | ||
a7ff87ac JP |
1050 | struct mlxsw_sp_nexthop { |
1051 | struct list_head neigh_list_node; /* member of neigh entry list */ | |
9665b745 | 1052 | struct list_head rif_list_node; |
a7ff87ac JP |
1053 | struct mlxsw_sp_nexthop_group *nh_grp; /* pointer back to the group |
1054 | * this belongs to | |
1055 | */ | |
c53b8e1b IS |
1056 | struct rhash_head ht_node; |
1057 | struct mlxsw_sp_nexthop_key key; | |
b8399a1e | 1058 | struct mlxsw_sp_rif *r; |
a7ff87ac JP |
1059 | u8 should_offload:1, /* set indicates this neigh is connected and |
1060 | * should be put to KVD linear area of this group. | |
1061 | */ | |
1062 | offloaded:1, /* set in case the neigh is actually put into | |
1063 | * KVD linear area of this group. | |
1064 | */ | |
1065 | update:1; /* set indicates that MAC of this neigh should be | |
1066 | * updated in HW | |
1067 | */ | |
1068 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1069 | }; | |
1070 | ||
e9ad5e7d IS |
1071 | struct mlxsw_sp_nexthop_group_key { |
1072 | struct fib_info *fi; | |
1073 | }; | |
1074 | ||
a7ff87ac | 1075 | struct mlxsw_sp_nexthop_group { |
e9ad5e7d | 1076 | struct rhash_head ht_node; |
a7ff87ac | 1077 | struct list_head fib_list; /* list of fib entries that use this group */ |
e9ad5e7d | 1078 | struct mlxsw_sp_nexthop_group_key key; |
b3e8d1eb IS |
1079 | u8 adj_index_valid:1, |
1080 | gateway:1; /* routes using the group use a gateway */ | |
a7ff87ac JP |
1081 | u32 adj_index; |
1082 | u16 ecmp_size; | |
1083 | u16 count; | |
1084 | struct mlxsw_sp_nexthop nexthops[0]; | |
b8399a1e | 1085 | #define nh_rif nexthops[0].r |
a7ff87ac JP |
1086 | }; |
1087 | ||
e9ad5e7d IS |
1088 | static const struct rhashtable_params mlxsw_sp_nexthop_group_ht_params = { |
1089 | .key_offset = offsetof(struct mlxsw_sp_nexthop_group, key), | |
1090 | .head_offset = offsetof(struct mlxsw_sp_nexthop_group, ht_node), | |
1091 | .key_len = sizeof(struct mlxsw_sp_nexthop_group_key), | |
1092 | }; | |
1093 | ||
1094 | static int mlxsw_sp_nexthop_group_insert(struct mlxsw_sp *mlxsw_sp, | |
1095 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1096 | { | |
1097 | return rhashtable_insert_fast(&mlxsw_sp->router.nexthop_group_ht, | |
1098 | &nh_grp->ht_node, | |
1099 | mlxsw_sp_nexthop_group_ht_params); | |
1100 | } | |
1101 | ||
1102 | static void mlxsw_sp_nexthop_group_remove(struct mlxsw_sp *mlxsw_sp, | |
1103 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1104 | { | |
1105 | rhashtable_remove_fast(&mlxsw_sp->router.nexthop_group_ht, | |
1106 | &nh_grp->ht_node, | |
1107 | mlxsw_sp_nexthop_group_ht_params); | |
1108 | } | |
1109 | ||
1110 | static struct mlxsw_sp_nexthop_group * | |
1111 | mlxsw_sp_nexthop_group_lookup(struct mlxsw_sp *mlxsw_sp, | |
1112 | struct mlxsw_sp_nexthop_group_key key) | |
1113 | { | |
1114 | return rhashtable_lookup_fast(&mlxsw_sp->router.nexthop_group_ht, &key, | |
1115 | mlxsw_sp_nexthop_group_ht_params); | |
1116 | } | |
1117 | ||
c53b8e1b IS |
1118 | static const struct rhashtable_params mlxsw_sp_nexthop_ht_params = { |
1119 | .key_offset = offsetof(struct mlxsw_sp_nexthop, key), | |
1120 | .head_offset = offsetof(struct mlxsw_sp_nexthop, ht_node), | |
1121 | .key_len = sizeof(struct mlxsw_sp_nexthop_key), | |
1122 | }; | |
1123 | ||
1124 | static int mlxsw_sp_nexthop_insert(struct mlxsw_sp *mlxsw_sp, | |
1125 | struct mlxsw_sp_nexthop *nh) | |
1126 | { | |
1127 | return rhashtable_insert_fast(&mlxsw_sp->router.nexthop_ht, | |
1128 | &nh->ht_node, mlxsw_sp_nexthop_ht_params); | |
1129 | } | |
1130 | ||
1131 | static void mlxsw_sp_nexthop_remove(struct mlxsw_sp *mlxsw_sp, | |
1132 | struct mlxsw_sp_nexthop *nh) | |
1133 | { | |
1134 | rhashtable_remove_fast(&mlxsw_sp->router.nexthop_ht, &nh->ht_node, | |
1135 | mlxsw_sp_nexthop_ht_params); | |
1136 | } | |
1137 | ||
ad178c8e IS |
1138 | static struct mlxsw_sp_nexthop * |
1139 | mlxsw_sp_nexthop_lookup(struct mlxsw_sp *mlxsw_sp, | |
1140 | struct mlxsw_sp_nexthop_key key) | |
1141 | { | |
1142 | return rhashtable_lookup_fast(&mlxsw_sp->router.nexthop_ht, &key, | |
1143 | mlxsw_sp_nexthop_ht_params); | |
1144 | } | |
1145 | ||
a7ff87ac | 1146 | static int mlxsw_sp_adj_index_mass_update_vr(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 1147 | const struct mlxsw_sp_fib *fib, |
a7ff87ac JP |
1148 | u32 adj_index, u16 ecmp_size, |
1149 | u32 new_adj_index, | |
1150 | u16 new_ecmp_size) | |
1151 | { | |
1152 | char raleu_pl[MLXSW_REG_RALEU_LEN]; | |
1153 | ||
1a9234e6 | 1154 | mlxsw_reg_raleu_pack(raleu_pl, |
76610ebb IS |
1155 | (enum mlxsw_reg_ralxx_protocol) fib->proto, |
1156 | fib->vr->id, adj_index, ecmp_size, new_adj_index, | |
1a9234e6 | 1157 | new_ecmp_size); |
a7ff87ac JP |
1158 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raleu), raleu_pl); |
1159 | } | |
1160 | ||
1161 | static int mlxsw_sp_adj_index_mass_update(struct mlxsw_sp *mlxsw_sp, | |
1162 | struct mlxsw_sp_nexthop_group *nh_grp, | |
1163 | u32 old_adj_index, u16 old_ecmp_size) | |
1164 | { | |
1165 | struct mlxsw_sp_fib_entry *fib_entry; | |
76610ebb | 1166 | struct mlxsw_sp_fib *fib = NULL; |
a7ff87ac JP |
1167 | int err; |
1168 | ||
1169 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
76610ebb | 1170 | if (fib == fib_entry->fib_node->fib) |
a7ff87ac | 1171 | continue; |
76610ebb IS |
1172 | fib = fib_entry->fib_node->fib; |
1173 | err = mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, fib, | |
a7ff87ac JP |
1174 | old_adj_index, |
1175 | old_ecmp_size, | |
1176 | nh_grp->adj_index, | |
1177 | nh_grp->ecmp_size); | |
1178 | if (err) | |
1179 | return err; | |
1180 | } | |
1181 | return 0; | |
1182 | } | |
1183 | ||
1184 | static int mlxsw_sp_nexthop_mac_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, | |
1185 | struct mlxsw_sp_nexthop *nh) | |
1186 | { | |
1187 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
1188 | char ratr_pl[MLXSW_REG_RATR_LEN]; | |
1189 | ||
1190 | mlxsw_reg_ratr_pack(ratr_pl, MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY, | |
1191 | true, adj_index, neigh_entry->rif); | |
1192 | mlxsw_reg_ratr_eth_entry_pack(ratr_pl, neigh_entry->ha); | |
1193 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl); | |
1194 | } | |
1195 | ||
1196 | static int | |
1197 | mlxsw_sp_nexthop_group_mac_update(struct mlxsw_sp *mlxsw_sp, | |
a59b7e02 IS |
1198 | struct mlxsw_sp_nexthop_group *nh_grp, |
1199 | bool reallocate) | |
a7ff87ac JP |
1200 | { |
1201 | u32 adj_index = nh_grp->adj_index; /* base */ | |
1202 | struct mlxsw_sp_nexthop *nh; | |
1203 | int i; | |
1204 | int err; | |
1205 | ||
1206 | for (i = 0; i < nh_grp->count; i++) { | |
1207 | nh = &nh_grp->nexthops[i]; | |
1208 | ||
1209 | if (!nh->should_offload) { | |
1210 | nh->offloaded = 0; | |
1211 | continue; | |
1212 | } | |
1213 | ||
a59b7e02 | 1214 | if (nh->update || reallocate) { |
a7ff87ac JP |
1215 | err = mlxsw_sp_nexthop_mac_update(mlxsw_sp, |
1216 | adj_index, nh); | |
1217 | if (err) | |
1218 | return err; | |
1219 | nh->update = 0; | |
1220 | nh->offloaded = 1; | |
1221 | } | |
1222 | adj_index++; | |
1223 | } | |
1224 | return 0; | |
1225 | } | |
1226 | ||
1227 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
1228 | struct mlxsw_sp_fib_entry *fib_entry); | |
1229 | ||
1230 | static int | |
1231 | mlxsw_sp_nexthop_fib_entries_update(struct mlxsw_sp *mlxsw_sp, | |
1232 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1233 | { | |
1234 | struct mlxsw_sp_fib_entry *fib_entry; | |
1235 | int err; | |
1236 | ||
1237 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
1238 | err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
1239 | if (err) | |
1240 | return err; | |
1241 | } | |
1242 | return 0; | |
1243 | } | |
1244 | ||
1245 | static void | |
1246 | mlxsw_sp_nexthop_group_refresh(struct mlxsw_sp *mlxsw_sp, | |
1247 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1248 | { | |
1249 | struct mlxsw_sp_nexthop *nh; | |
1250 | bool offload_change = false; | |
1251 | u32 adj_index; | |
1252 | u16 ecmp_size = 0; | |
1253 | bool old_adj_index_valid; | |
1254 | u32 old_adj_index; | |
1255 | u16 old_ecmp_size; | |
1256 | int ret; | |
1257 | int i; | |
1258 | int err; | |
1259 | ||
b3e8d1eb IS |
1260 | if (!nh_grp->gateway) { |
1261 | mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1262 | return; | |
1263 | } | |
1264 | ||
a7ff87ac JP |
1265 | for (i = 0; i < nh_grp->count; i++) { |
1266 | nh = &nh_grp->nexthops[i]; | |
1267 | ||
1268 | if (nh->should_offload ^ nh->offloaded) { | |
1269 | offload_change = true; | |
1270 | if (nh->should_offload) | |
1271 | nh->update = 1; | |
1272 | } | |
1273 | if (nh->should_offload) | |
1274 | ecmp_size++; | |
1275 | } | |
1276 | if (!offload_change) { | |
1277 | /* Nothing was added or removed, so no need to reallocate. Just | |
1278 | * update MAC on existing adjacency indexes. | |
1279 | */ | |
a59b7e02 IS |
1280 | err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, |
1281 | false); | |
a7ff87ac JP |
1282 | if (err) { |
1283 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
1284 | goto set_trap; | |
1285 | } | |
1286 | return; | |
1287 | } | |
1288 | if (!ecmp_size) | |
1289 | /* No neigh of this group is connected so we just set | |
1290 | * the trap and let everthing flow through kernel. | |
1291 | */ | |
1292 | goto set_trap; | |
1293 | ||
1294 | ret = mlxsw_sp_kvdl_alloc(mlxsw_sp, ecmp_size); | |
1295 | if (ret < 0) { | |
1296 | /* We ran out of KVD linear space, just set the | |
1297 | * trap and let everything flow through kernel. | |
1298 | */ | |
1299 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to allocate KVD linear area for nexthop group.\n"); | |
1300 | goto set_trap; | |
1301 | } | |
1302 | adj_index = ret; | |
1303 | old_adj_index_valid = nh_grp->adj_index_valid; | |
1304 | old_adj_index = nh_grp->adj_index; | |
1305 | old_ecmp_size = nh_grp->ecmp_size; | |
1306 | nh_grp->adj_index_valid = 1; | |
1307 | nh_grp->adj_index = adj_index; | |
1308 | nh_grp->ecmp_size = ecmp_size; | |
a59b7e02 | 1309 | err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, true); |
a7ff87ac JP |
1310 | if (err) { |
1311 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
1312 | goto set_trap; | |
1313 | } | |
1314 | ||
1315 | if (!old_adj_index_valid) { | |
1316 | /* The trap was set for fib entries, so we have to call | |
1317 | * fib entry update to unset it and use adjacency index. | |
1318 | */ | |
1319 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1320 | if (err) { | |
1321 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to add adjacency index to fib entries.\n"); | |
1322 | goto set_trap; | |
1323 | } | |
1324 | return; | |
1325 | } | |
1326 | ||
1327 | err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, nh_grp, | |
1328 | old_adj_index, old_ecmp_size); | |
1329 | mlxsw_sp_kvdl_free(mlxsw_sp, old_adj_index); | |
1330 | if (err) { | |
1331 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to mass-update adjacency index for nexthop group.\n"); | |
1332 | goto set_trap; | |
1333 | } | |
1334 | return; | |
1335 | ||
1336 | set_trap: | |
1337 | old_adj_index_valid = nh_grp->adj_index_valid; | |
1338 | nh_grp->adj_index_valid = 0; | |
1339 | for (i = 0; i < nh_grp->count; i++) { | |
1340 | nh = &nh_grp->nexthops[i]; | |
1341 | nh->offloaded = 0; | |
1342 | } | |
1343 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1344 | if (err) | |
1345 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set traps for fib entries.\n"); | |
1346 | if (old_adj_index_valid) | |
1347 | mlxsw_sp_kvdl_free(mlxsw_sp, nh_grp->adj_index); | |
1348 | } | |
1349 | ||
1350 | static void __mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp_nexthop *nh, | |
1351 | bool removing) | |
1352 | { | |
1353 | if (!removing && !nh->should_offload) | |
1354 | nh->should_offload = 1; | |
1355 | else if (removing && nh->offloaded) | |
1356 | nh->should_offload = 0; | |
1357 | nh->update = 1; | |
1358 | } | |
1359 | ||
1360 | static void | |
1361 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
1362 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1363 | bool removing) | |
1364 | { | |
1365 | struct mlxsw_sp_nexthop *nh; | |
1366 | ||
a7ff87ac JP |
1367 | list_for_each_entry(nh, &neigh_entry->nexthop_list, |
1368 | neigh_list_node) { | |
1369 | __mlxsw_sp_nexthop_neigh_update(nh, removing); | |
1370 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1371 | } | |
a7ff87ac JP |
1372 | } |
1373 | ||
9665b745 IS |
1374 | static void mlxsw_sp_nexthop_rif_init(struct mlxsw_sp_nexthop *nh, |
1375 | struct mlxsw_sp_rif *r) | |
1376 | { | |
1377 | if (nh->r) | |
1378 | return; | |
1379 | ||
1380 | nh->r = r; | |
1381 | list_add(&nh->rif_list_node, &r->nexthop_list); | |
1382 | } | |
1383 | ||
1384 | static void mlxsw_sp_nexthop_rif_fini(struct mlxsw_sp_nexthop *nh) | |
1385 | { | |
1386 | if (!nh->r) | |
1387 | return; | |
1388 | ||
1389 | list_del(&nh->rif_list_node); | |
1390 | nh->r = NULL; | |
1391 | } | |
1392 | ||
a8c97014 IS |
1393 | static int mlxsw_sp_nexthop_neigh_init(struct mlxsw_sp *mlxsw_sp, |
1394 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
1395 | { |
1396 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
a8c97014 | 1397 | struct fib_nh *fib_nh = nh->key.fib_nh; |
a7ff87ac | 1398 | struct neighbour *n; |
93a87e5e | 1399 | u8 nud_state, dead; |
c53b8e1b IS |
1400 | int err; |
1401 | ||
ad178c8e | 1402 | if (!nh->nh_grp->gateway || nh->neigh_entry) |
b8399a1e IS |
1403 | return 0; |
1404 | ||
33b1341c JP |
1405 | /* Take a reference of neigh here ensuring that neigh would |
1406 | * not be detructed before the nexthop entry is finished. | |
1407 | * The reference is taken either in neigh_lookup() or | |
fd76d910 | 1408 | * in neigh_create() in case n is not found. |
33b1341c | 1409 | */ |
a8c97014 | 1410 | n = neigh_lookup(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev); |
33b1341c | 1411 | if (!n) { |
a8c97014 IS |
1412 | n = neigh_create(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev); |
1413 | if (IS_ERR(n)) | |
1414 | return PTR_ERR(n); | |
a7ff87ac | 1415 | neigh_event_send(n, NULL); |
33b1341c JP |
1416 | } |
1417 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); | |
1418 | if (!neigh_entry) { | |
5c8802f1 IS |
1419 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); |
1420 | if (IS_ERR(neigh_entry)) { | |
c53b8e1b IS |
1421 | err = -EINVAL; |
1422 | goto err_neigh_entry_create; | |
5c8802f1 | 1423 | } |
a7ff87ac | 1424 | } |
b2157149 YG |
1425 | |
1426 | /* If that is the first nexthop connected to that neigh, add to | |
1427 | * nexthop_neighs_list | |
1428 | */ | |
1429 | if (list_empty(&neigh_entry->nexthop_list)) | |
1430 | list_add_tail(&neigh_entry->nexthop_neighs_list_node, | |
1431 | &mlxsw_sp->router.nexthop_neighs_list); | |
1432 | ||
a7ff87ac JP |
1433 | nh->neigh_entry = neigh_entry; |
1434 | list_add_tail(&nh->neigh_list_node, &neigh_entry->nexthop_list); | |
1435 | read_lock_bh(&n->lock); | |
1436 | nud_state = n->nud_state; | |
93a87e5e | 1437 | dead = n->dead; |
a7ff87ac | 1438 | read_unlock_bh(&n->lock); |
93a87e5e | 1439 | __mlxsw_sp_nexthop_neigh_update(nh, !(nud_state & NUD_VALID && !dead)); |
a7ff87ac JP |
1440 | |
1441 | return 0; | |
c53b8e1b IS |
1442 | |
1443 | err_neigh_entry_create: | |
1444 | neigh_release(n); | |
c53b8e1b | 1445 | return err; |
a7ff87ac JP |
1446 | } |
1447 | ||
a8c97014 IS |
1448 | static void mlxsw_sp_nexthop_neigh_fini(struct mlxsw_sp *mlxsw_sp, |
1449 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
1450 | { |
1451 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
a8c97014 | 1452 | struct neighbour *n; |
a7ff87ac | 1453 | |
b8399a1e | 1454 | if (!neigh_entry) |
a8c97014 IS |
1455 | return; |
1456 | n = neigh_entry->key.n; | |
b8399a1e | 1457 | |
58312125 | 1458 | __mlxsw_sp_nexthop_neigh_update(nh, true); |
a7ff87ac | 1459 | list_del(&nh->neigh_list_node); |
e58be79e | 1460 | nh->neigh_entry = NULL; |
b2157149 YG |
1461 | |
1462 | /* If that is the last nexthop connected to that neigh, remove from | |
1463 | * nexthop_neighs_list | |
1464 | */ | |
e58be79e IS |
1465 | if (list_empty(&neigh_entry->nexthop_list)) |
1466 | list_del(&neigh_entry->nexthop_neighs_list_node); | |
b2157149 | 1467 | |
5c8802f1 IS |
1468 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) |
1469 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1470 | ||
1471 | neigh_release(n); | |
a8c97014 | 1472 | } |
c53b8e1b | 1473 | |
a8c97014 IS |
1474 | static int mlxsw_sp_nexthop_init(struct mlxsw_sp *mlxsw_sp, |
1475 | struct mlxsw_sp_nexthop_group *nh_grp, | |
1476 | struct mlxsw_sp_nexthop *nh, | |
1477 | struct fib_nh *fib_nh) | |
1478 | { | |
1479 | struct net_device *dev = fib_nh->nh_dev; | |
df6dd79b | 1480 | struct in_device *in_dev; |
a8c97014 IS |
1481 | struct mlxsw_sp_rif *r; |
1482 | int err; | |
1483 | ||
1484 | nh->nh_grp = nh_grp; | |
1485 | nh->key.fib_nh = fib_nh; | |
1486 | err = mlxsw_sp_nexthop_insert(mlxsw_sp, nh); | |
1487 | if (err) | |
1488 | return err; | |
1489 | ||
97989ee0 IS |
1490 | if (!dev) |
1491 | return 0; | |
1492 | ||
df6dd79b IS |
1493 | in_dev = __in_dev_get_rtnl(dev); |
1494 | if (in_dev && IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) && | |
1495 | fib_nh->nh_flags & RTNH_F_LINKDOWN) | |
1496 | return 0; | |
1497 | ||
a8c97014 IS |
1498 | r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
1499 | if (!r) | |
1500 | return 0; | |
9665b745 | 1501 | mlxsw_sp_nexthop_rif_init(nh, r); |
a8c97014 IS |
1502 | |
1503 | err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); | |
1504 | if (err) | |
1505 | goto err_nexthop_neigh_init; | |
1506 | ||
1507 | return 0; | |
1508 | ||
1509 | err_nexthop_neigh_init: | |
1510 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); | |
1511 | return err; | |
1512 | } | |
1513 | ||
1514 | static void mlxsw_sp_nexthop_fini(struct mlxsw_sp *mlxsw_sp, | |
1515 | struct mlxsw_sp_nexthop *nh) | |
1516 | { | |
1517 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
9665b745 | 1518 | mlxsw_sp_nexthop_rif_fini(nh); |
c53b8e1b | 1519 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); |
a7ff87ac JP |
1520 | } |
1521 | ||
ad178c8e IS |
1522 | static void mlxsw_sp_nexthop_event(struct mlxsw_sp *mlxsw_sp, |
1523 | unsigned long event, struct fib_nh *fib_nh) | |
1524 | { | |
1525 | struct mlxsw_sp_nexthop_key key; | |
1526 | struct mlxsw_sp_nexthop *nh; | |
1527 | struct mlxsw_sp_rif *r; | |
1528 | ||
1529 | if (mlxsw_sp->router.aborted) | |
1530 | return; | |
1531 | ||
1532 | key.fib_nh = fib_nh; | |
1533 | nh = mlxsw_sp_nexthop_lookup(mlxsw_sp, key); | |
1534 | if (WARN_ON_ONCE(!nh)) | |
1535 | return; | |
1536 | ||
1537 | r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, fib_nh->nh_dev); | |
1538 | if (!r) | |
1539 | return; | |
1540 | ||
1541 | switch (event) { | |
1542 | case FIB_EVENT_NH_ADD: | |
9665b745 | 1543 | mlxsw_sp_nexthop_rif_init(nh, r); |
ad178c8e IS |
1544 | mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); |
1545 | break; | |
1546 | case FIB_EVENT_NH_DEL: | |
1547 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
9665b745 | 1548 | mlxsw_sp_nexthop_rif_fini(nh); |
ad178c8e IS |
1549 | break; |
1550 | } | |
1551 | ||
1552 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1553 | } | |
1554 | ||
9665b745 IS |
1555 | static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, |
1556 | struct mlxsw_sp_rif *r) | |
1557 | { | |
1558 | struct mlxsw_sp_nexthop *nh, *tmp; | |
1559 | ||
1560 | list_for_each_entry_safe(nh, tmp, &r->nexthop_list, rif_list_node) { | |
1561 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
1562 | mlxsw_sp_nexthop_rif_fini(nh); | |
1563 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1564 | } | |
1565 | } | |
1566 | ||
a7ff87ac JP |
1567 | static struct mlxsw_sp_nexthop_group * |
1568 | mlxsw_sp_nexthop_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi) | |
1569 | { | |
1570 | struct mlxsw_sp_nexthop_group *nh_grp; | |
1571 | struct mlxsw_sp_nexthop *nh; | |
1572 | struct fib_nh *fib_nh; | |
1573 | size_t alloc_size; | |
1574 | int i; | |
1575 | int err; | |
1576 | ||
1577 | alloc_size = sizeof(*nh_grp) + | |
1578 | fi->fib_nhs * sizeof(struct mlxsw_sp_nexthop); | |
1579 | nh_grp = kzalloc(alloc_size, GFP_KERNEL); | |
1580 | if (!nh_grp) | |
1581 | return ERR_PTR(-ENOMEM); | |
1582 | INIT_LIST_HEAD(&nh_grp->fib_list); | |
b3e8d1eb | 1583 | nh_grp->gateway = fi->fib_nh->nh_scope == RT_SCOPE_LINK; |
a7ff87ac | 1584 | nh_grp->count = fi->fib_nhs; |
e9ad5e7d | 1585 | nh_grp->key.fi = fi; |
a7ff87ac JP |
1586 | for (i = 0; i < nh_grp->count; i++) { |
1587 | nh = &nh_grp->nexthops[i]; | |
1588 | fib_nh = &fi->fib_nh[i]; | |
1589 | err = mlxsw_sp_nexthop_init(mlxsw_sp, nh_grp, nh, fib_nh); | |
1590 | if (err) | |
1591 | goto err_nexthop_init; | |
1592 | } | |
e9ad5e7d IS |
1593 | err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); |
1594 | if (err) | |
1595 | goto err_nexthop_group_insert; | |
a7ff87ac JP |
1596 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
1597 | return nh_grp; | |
1598 | ||
e9ad5e7d | 1599 | err_nexthop_group_insert: |
a7ff87ac | 1600 | err_nexthop_init: |
df6dd79b IS |
1601 | for (i--; i >= 0; i--) { |
1602 | nh = &nh_grp->nexthops[i]; | |
a7ff87ac | 1603 | mlxsw_sp_nexthop_fini(mlxsw_sp, nh); |
df6dd79b | 1604 | } |
a7ff87ac JP |
1605 | kfree(nh_grp); |
1606 | return ERR_PTR(err); | |
1607 | } | |
1608 | ||
1609 | static void | |
1610 | mlxsw_sp_nexthop_group_destroy(struct mlxsw_sp *mlxsw_sp, | |
1611 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1612 | { | |
1613 | struct mlxsw_sp_nexthop *nh; | |
1614 | int i; | |
1615 | ||
e9ad5e7d | 1616 | mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); |
a7ff87ac JP |
1617 | for (i = 0; i < nh_grp->count; i++) { |
1618 | nh = &nh_grp->nexthops[i]; | |
1619 | mlxsw_sp_nexthop_fini(mlxsw_sp, nh); | |
1620 | } | |
58312125 IS |
1621 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
1622 | WARN_ON_ONCE(nh_grp->adj_index_valid); | |
a7ff87ac JP |
1623 | kfree(nh_grp); |
1624 | } | |
1625 | ||
a7ff87ac JP |
1626 | static int mlxsw_sp_nexthop_group_get(struct mlxsw_sp *mlxsw_sp, |
1627 | struct mlxsw_sp_fib_entry *fib_entry, | |
1628 | struct fib_info *fi) | |
1629 | { | |
e9ad5e7d | 1630 | struct mlxsw_sp_nexthop_group_key key; |
a7ff87ac JP |
1631 | struct mlxsw_sp_nexthop_group *nh_grp; |
1632 | ||
e9ad5e7d IS |
1633 | key.fi = fi; |
1634 | nh_grp = mlxsw_sp_nexthop_group_lookup(mlxsw_sp, key); | |
a7ff87ac JP |
1635 | if (!nh_grp) { |
1636 | nh_grp = mlxsw_sp_nexthop_group_create(mlxsw_sp, fi); | |
1637 | if (IS_ERR(nh_grp)) | |
1638 | return PTR_ERR(nh_grp); | |
1639 | } | |
1640 | list_add_tail(&fib_entry->nexthop_group_node, &nh_grp->fib_list); | |
1641 | fib_entry->nh_group = nh_grp; | |
1642 | return 0; | |
1643 | } | |
1644 | ||
1645 | static void mlxsw_sp_nexthop_group_put(struct mlxsw_sp *mlxsw_sp, | |
1646 | struct mlxsw_sp_fib_entry *fib_entry) | |
1647 | { | |
1648 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
1649 | ||
1650 | list_del(&fib_entry->nexthop_group_node); | |
1651 | if (!list_empty(&nh_grp->fib_list)) | |
1652 | return; | |
1653 | mlxsw_sp_nexthop_group_destroy(mlxsw_sp, nh_grp); | |
1654 | } | |
1655 | ||
013b20f9 IS |
1656 | static bool |
1657 | mlxsw_sp_fib_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) | |
1658 | { | |
1659 | struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group; | |
1660 | ||
9aecce1c IS |
1661 | if (fib_entry->params.tos) |
1662 | return false; | |
1663 | ||
013b20f9 IS |
1664 | switch (fib_entry->type) { |
1665 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
1666 | return !!nh_group->adj_index_valid; | |
1667 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: | |
70ad3506 | 1668 | return !!nh_group->nh_rif; |
013b20f9 IS |
1669 | default: |
1670 | return false; | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | static void mlxsw_sp_fib_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) | |
1675 | { | |
1676 | fib_entry->offloaded = true; | |
1677 | ||
76610ebb | 1678 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 IS |
1679 | case MLXSW_SP_L3_PROTO_IPV4: |
1680 | fib_info_offload_inc(fib_entry->nh_group->key.fi); | |
1681 | break; | |
1682 | case MLXSW_SP_L3_PROTO_IPV6: | |
1683 | WARN_ON_ONCE(1); | |
1684 | } | |
1685 | } | |
1686 | ||
1687 | static void | |
1688 | mlxsw_sp_fib_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
1689 | { | |
76610ebb | 1690 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 IS |
1691 | case MLXSW_SP_L3_PROTO_IPV4: |
1692 | fib_info_offload_dec(fib_entry->nh_group->key.fi); | |
1693 | break; | |
1694 | case MLXSW_SP_L3_PROTO_IPV6: | |
1695 | WARN_ON_ONCE(1); | |
1696 | } | |
1697 | ||
1698 | fib_entry->offloaded = false; | |
1699 | } | |
1700 | ||
1701 | static void | |
1702 | mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry, | |
1703 | enum mlxsw_reg_ralue_op op, int err) | |
1704 | { | |
1705 | switch (op) { | |
1706 | case MLXSW_REG_RALUE_OP_WRITE_DELETE: | |
1707 | if (!fib_entry->offloaded) | |
1708 | return; | |
1709 | return mlxsw_sp_fib_entry_offload_unset(fib_entry); | |
1710 | case MLXSW_REG_RALUE_OP_WRITE_WRITE: | |
1711 | if (err) | |
1712 | return; | |
1713 | if (mlxsw_sp_fib_entry_should_offload(fib_entry) && | |
1714 | !fib_entry->offloaded) | |
1715 | mlxsw_sp_fib_entry_offload_set(fib_entry); | |
1716 | else if (!mlxsw_sp_fib_entry_should_offload(fib_entry) && | |
1717 | fib_entry->offloaded) | |
1718 | mlxsw_sp_fib_entry_offload_unset(fib_entry); | |
1719 | return; | |
1720 | default: | |
1721 | return; | |
1722 | } | |
1723 | } | |
1724 | ||
a7ff87ac JP |
1725 | static int mlxsw_sp_fib_entry_op4_remote(struct mlxsw_sp *mlxsw_sp, |
1726 | struct mlxsw_sp_fib_entry *fib_entry, | |
1727 | enum mlxsw_reg_ralue_op op) | |
1728 | { | |
1729 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
76610ebb | 1730 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
9aecce1c | 1731 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
a7ff87ac JP |
1732 | enum mlxsw_reg_ralue_trap_action trap_action; |
1733 | u16 trap_id = 0; | |
1734 | u32 adjacency_index = 0; | |
1735 | u16 ecmp_size = 0; | |
1736 | ||
1737 | /* In case the nexthop group adjacency index is valid, use it | |
1738 | * with provided ECMP size. Otherwise, setup trap and pass | |
1739 | * traffic to kernel. | |
1740 | */ | |
4b411477 | 1741 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { |
a7ff87ac JP |
1742 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; |
1743 | adjacency_index = fib_entry->nh_group->adj_index; | |
1744 | ecmp_size = fib_entry->nh_group->ecmp_size; | |
1745 | } else { | |
1746 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
1747 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
1748 | } | |
1749 | ||
1a9234e6 | 1750 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
1751 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
1752 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 1753 | *p_dip); |
a7ff87ac JP |
1754 | mlxsw_reg_ralue_act_remote_pack(ralue_pl, trap_action, trap_id, |
1755 | adjacency_index, ecmp_size); | |
1756 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
1757 | } | |
1758 | ||
61c503f9 JP |
1759 | static int mlxsw_sp_fib_entry_op4_local(struct mlxsw_sp *mlxsw_sp, |
1760 | struct mlxsw_sp_fib_entry *fib_entry, | |
1761 | enum mlxsw_reg_ralue_op op) | |
1762 | { | |
b8399a1e | 1763 | struct mlxsw_sp_rif *r = fib_entry->nh_group->nh_rif; |
76610ebb | 1764 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
70ad3506 | 1765 | enum mlxsw_reg_ralue_trap_action trap_action; |
61c503f9 | 1766 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
9aecce1c | 1767 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
70ad3506 IS |
1768 | u16 trap_id = 0; |
1769 | u16 rif = 0; | |
1770 | ||
1771 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { | |
1772 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; | |
1773 | rif = r->rif; | |
1774 | } else { | |
1775 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
1776 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
1777 | } | |
61c503f9 | 1778 | |
1a9234e6 | 1779 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
1780 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
1781 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 1782 | *p_dip); |
70ad3506 | 1783 | mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id, rif); |
61c503f9 JP |
1784 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); |
1785 | } | |
1786 | ||
1787 | static int mlxsw_sp_fib_entry_op4_trap(struct mlxsw_sp *mlxsw_sp, | |
1788 | struct mlxsw_sp_fib_entry *fib_entry, | |
1789 | enum mlxsw_reg_ralue_op op) | |
1790 | { | |
76610ebb | 1791 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
61c503f9 | 1792 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
9aecce1c | 1793 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
61c503f9 | 1794 | |
1a9234e6 | 1795 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
1796 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
1797 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 1798 | *p_dip); |
61c503f9 JP |
1799 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); |
1800 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
1801 | } | |
1802 | ||
1803 | static int mlxsw_sp_fib_entry_op4(struct mlxsw_sp *mlxsw_sp, | |
1804 | struct mlxsw_sp_fib_entry *fib_entry, | |
1805 | enum mlxsw_reg_ralue_op op) | |
1806 | { | |
1807 | switch (fib_entry->type) { | |
1808 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
a7ff87ac | 1809 | return mlxsw_sp_fib_entry_op4_remote(mlxsw_sp, fib_entry, op); |
61c503f9 JP |
1810 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: |
1811 | return mlxsw_sp_fib_entry_op4_local(mlxsw_sp, fib_entry, op); | |
1812 | case MLXSW_SP_FIB_ENTRY_TYPE_TRAP: | |
1813 | return mlxsw_sp_fib_entry_op4_trap(mlxsw_sp, fib_entry, op); | |
1814 | } | |
1815 | return -EINVAL; | |
1816 | } | |
1817 | ||
1818 | static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, | |
1819 | struct mlxsw_sp_fib_entry *fib_entry, | |
1820 | enum mlxsw_reg_ralue_op op) | |
1821 | { | |
013b20f9 IS |
1822 | int err = -EINVAL; |
1823 | ||
76610ebb | 1824 | switch (fib_entry->fib_node->fib->proto) { |
61c503f9 | 1825 | case MLXSW_SP_L3_PROTO_IPV4: |
013b20f9 IS |
1826 | err = mlxsw_sp_fib_entry_op4(mlxsw_sp, fib_entry, op); |
1827 | break; | |
61c503f9 | 1828 | case MLXSW_SP_L3_PROTO_IPV6: |
013b20f9 | 1829 | return err; |
61c503f9 | 1830 | } |
013b20f9 IS |
1831 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, err); |
1832 | return err; | |
61c503f9 JP |
1833 | } |
1834 | ||
1835 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
1836 | struct mlxsw_sp_fib_entry *fib_entry) | |
1837 | { | |
7146da31 JP |
1838 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, |
1839 | MLXSW_REG_RALUE_OP_WRITE_WRITE); | |
61c503f9 JP |
1840 | } |
1841 | ||
1842 | static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp, | |
1843 | struct mlxsw_sp_fib_entry *fib_entry) | |
1844 | { | |
1845 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, | |
1846 | MLXSW_REG_RALUE_OP_WRITE_DELETE); | |
1847 | } | |
1848 | ||
61c503f9 | 1849 | static int |
013b20f9 IS |
1850 | mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp, |
1851 | const struct fib_entry_notifier_info *fen_info, | |
1852 | struct mlxsw_sp_fib_entry *fib_entry) | |
61c503f9 | 1853 | { |
b45f64d1 | 1854 | struct fib_info *fi = fen_info->fi; |
61c503f9 | 1855 | |
97989ee0 IS |
1856 | switch (fen_info->type) { |
1857 | case RTN_BROADCAST: /* fall through */ | |
1858 | case RTN_LOCAL: | |
61c503f9 JP |
1859 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; |
1860 | return 0; | |
97989ee0 IS |
1861 | case RTN_UNREACHABLE: /* fall through */ |
1862 | case RTN_BLACKHOLE: /* fall through */ | |
1863 | case RTN_PROHIBIT: | |
1864 | /* Packets hitting these routes need to be trapped, but | |
1865 | * can do so with a lower priority than packets directed | |
1866 | * at the host, so use action type local instead of trap. | |
1867 | */ | |
61c503f9 | 1868 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; |
97989ee0 IS |
1869 | return 0; |
1870 | case RTN_UNICAST: | |
1871 | if (fi->fib_nh->nh_scope != RT_SCOPE_LINK) | |
1872 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
1873 | else | |
1874 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; | |
1875 | return 0; | |
1876 | default: | |
1877 | return -EINVAL; | |
1878 | } | |
a7ff87ac JP |
1879 | } |
1880 | ||
5b004412 | 1881 | static struct mlxsw_sp_fib_entry * |
9aecce1c IS |
1882 | mlxsw_sp_fib4_entry_create(struct mlxsw_sp *mlxsw_sp, |
1883 | struct mlxsw_sp_fib_node *fib_node, | |
1884 | const struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 1885 | { |
61c503f9 | 1886 | struct mlxsw_sp_fib_entry *fib_entry; |
61c503f9 JP |
1887 | int err; |
1888 | ||
9aecce1c | 1889 | fib_entry = kzalloc(sizeof(*fib_entry), GFP_KERNEL); |
61c503f9 JP |
1890 | if (!fib_entry) { |
1891 | err = -ENOMEM; | |
9aecce1c | 1892 | goto err_fib_entry_alloc; |
61c503f9 | 1893 | } |
61c503f9 | 1894 | |
013b20f9 | 1895 | err = mlxsw_sp_fib4_entry_type_set(mlxsw_sp, fen_info, fib_entry); |
61c503f9 | 1896 | if (err) |
013b20f9 | 1897 | goto err_fib4_entry_type_set; |
61c503f9 | 1898 | |
9aecce1c | 1899 | err = mlxsw_sp_nexthop_group_get(mlxsw_sp, fib_entry, fen_info->fi); |
b8399a1e IS |
1900 | if (err) |
1901 | goto err_nexthop_group_get; | |
1902 | ||
9aecce1c IS |
1903 | fib_entry->params.prio = fen_info->fi->fib_priority; |
1904 | fib_entry->params.tb_id = fen_info->tb_id; | |
1905 | fib_entry->params.type = fen_info->type; | |
1906 | fib_entry->params.tos = fen_info->tos; | |
1907 | ||
1908 | fib_entry->fib_node = fib_node; | |
1909 | ||
5b004412 JP |
1910 | return fib_entry; |
1911 | ||
b8399a1e | 1912 | err_nexthop_group_get: |
013b20f9 | 1913 | err_fib4_entry_type_set: |
9aecce1c IS |
1914 | kfree(fib_entry); |
1915 | err_fib_entry_alloc: | |
5b004412 JP |
1916 | return ERR_PTR(err); |
1917 | } | |
1918 | ||
9aecce1c IS |
1919 | static void mlxsw_sp_fib4_entry_destroy(struct mlxsw_sp *mlxsw_sp, |
1920 | struct mlxsw_sp_fib_entry *fib_entry) | |
1921 | { | |
1922 | mlxsw_sp_nexthop_group_put(mlxsw_sp, fib_entry); | |
1923 | kfree(fib_entry); | |
1924 | } | |
1925 | ||
1926 | static struct mlxsw_sp_fib_node * | |
1927 | mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp, | |
1928 | const struct fib_entry_notifier_info *fen_info); | |
1929 | ||
5b004412 | 1930 | static struct mlxsw_sp_fib_entry * |
9aecce1c IS |
1931 | mlxsw_sp_fib4_entry_lookup(struct mlxsw_sp *mlxsw_sp, |
1932 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 1933 | { |
9aecce1c IS |
1934 | struct mlxsw_sp_fib_entry *fib_entry; |
1935 | struct mlxsw_sp_fib_node *fib_node; | |
5b004412 | 1936 | |
9aecce1c IS |
1937 | fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info); |
1938 | if (IS_ERR(fib_node)) | |
1939 | return NULL; | |
1940 | ||
1941 | list_for_each_entry(fib_entry, &fib_node->entry_list, list) { | |
1942 | if (fib_entry->params.tb_id == fen_info->tb_id && | |
1943 | fib_entry->params.tos == fen_info->tos && | |
1944 | fib_entry->params.type == fen_info->type && | |
1945 | fib_entry->nh_group->key.fi == fen_info->fi) { | |
1946 | return fib_entry; | |
1947 | } | |
1948 | } | |
1949 | ||
1950 | return NULL; | |
1951 | } | |
1952 | ||
1953 | static const struct rhashtable_params mlxsw_sp_fib_ht_params = { | |
1954 | .key_offset = offsetof(struct mlxsw_sp_fib_node, key), | |
1955 | .head_offset = offsetof(struct mlxsw_sp_fib_node, ht_node), | |
1956 | .key_len = sizeof(struct mlxsw_sp_fib_key), | |
1957 | .automatic_shrinking = true, | |
1958 | }; | |
1959 | ||
1960 | static int mlxsw_sp_fib_node_insert(struct mlxsw_sp_fib *fib, | |
1961 | struct mlxsw_sp_fib_node *fib_node) | |
1962 | { | |
1963 | return rhashtable_insert_fast(&fib->ht, &fib_node->ht_node, | |
1964 | mlxsw_sp_fib_ht_params); | |
1965 | } | |
1966 | ||
1967 | static void mlxsw_sp_fib_node_remove(struct mlxsw_sp_fib *fib, | |
1968 | struct mlxsw_sp_fib_node *fib_node) | |
1969 | { | |
1970 | rhashtable_remove_fast(&fib->ht, &fib_node->ht_node, | |
1971 | mlxsw_sp_fib_ht_params); | |
1972 | } | |
1973 | ||
1974 | static struct mlxsw_sp_fib_node * | |
1975 | mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr, | |
1976 | size_t addr_len, unsigned char prefix_len) | |
1977 | { | |
1978 | struct mlxsw_sp_fib_key key; | |
1979 | ||
1980 | memset(&key, 0, sizeof(key)); | |
1981 | memcpy(key.addr, addr, addr_len); | |
1982 | key.prefix_len = prefix_len; | |
1983 | return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params); | |
1984 | } | |
1985 | ||
1986 | static struct mlxsw_sp_fib_node * | |
76610ebb | 1987 | mlxsw_sp_fib_node_create(struct mlxsw_sp_fib *fib, const void *addr, |
9aecce1c IS |
1988 | size_t addr_len, unsigned char prefix_len) |
1989 | { | |
1990 | struct mlxsw_sp_fib_node *fib_node; | |
1991 | ||
1992 | fib_node = kzalloc(sizeof(*fib_node), GFP_KERNEL); | |
1993 | if (!fib_node) | |
5b004412 JP |
1994 | return NULL; |
1995 | ||
9aecce1c | 1996 | INIT_LIST_HEAD(&fib_node->entry_list); |
76610ebb | 1997 | list_add(&fib_node->list, &fib->node_list); |
9aecce1c IS |
1998 | memcpy(fib_node->key.addr, addr, addr_len); |
1999 | fib_node->key.prefix_len = prefix_len; | |
9aecce1c IS |
2000 | |
2001 | return fib_node; | |
2002 | } | |
2003 | ||
2004 | static void mlxsw_sp_fib_node_destroy(struct mlxsw_sp_fib_node *fib_node) | |
2005 | { | |
9aecce1c IS |
2006 | list_del(&fib_node->list); |
2007 | WARN_ON(!list_empty(&fib_node->entry_list)); | |
2008 | kfree(fib_node); | |
2009 | } | |
2010 | ||
2011 | static bool | |
2012 | mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node, | |
2013 | const struct mlxsw_sp_fib_entry *fib_entry) | |
2014 | { | |
2015 | return list_first_entry(&fib_node->entry_list, | |
2016 | struct mlxsw_sp_fib_entry, list) == fib_entry; | |
2017 | } | |
2018 | ||
2019 | static void mlxsw_sp_fib_node_prefix_inc(struct mlxsw_sp_fib_node *fib_node) | |
2020 | { | |
2021 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 2022 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
2023 | |
2024 | if (fib->prefix_ref_count[prefix_len]++ == 0) | |
2025 | mlxsw_sp_prefix_usage_set(&fib->prefix_usage, prefix_len); | |
2026 | } | |
2027 | ||
2028 | static void mlxsw_sp_fib_node_prefix_dec(struct mlxsw_sp_fib_node *fib_node) | |
2029 | { | |
2030 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 2031 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
2032 | |
2033 | if (--fib->prefix_ref_count[prefix_len] == 0) | |
2034 | mlxsw_sp_prefix_usage_clear(&fib->prefix_usage, prefix_len); | |
5b004412 JP |
2035 | } |
2036 | ||
76610ebb IS |
2037 | static int mlxsw_sp_fib_node_init(struct mlxsw_sp *mlxsw_sp, |
2038 | struct mlxsw_sp_fib_node *fib_node, | |
2039 | struct mlxsw_sp_fib *fib) | |
2040 | { | |
2041 | struct mlxsw_sp_prefix_usage req_prefix_usage; | |
2042 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
2043 | int err; | |
2044 | ||
2045 | err = mlxsw_sp_fib_node_insert(fib, fib_node); | |
2046 | if (err) | |
2047 | return err; | |
2048 | fib_node->fib = fib; | |
2049 | ||
2050 | mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, &fib->prefix_usage); | |
2051 | mlxsw_sp_prefix_usage_set(&req_prefix_usage, fib_node->key.prefix_len); | |
2052 | ||
2053 | if (!mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) { | |
2054 | err = mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib, | |
2055 | &req_prefix_usage); | |
2056 | if (err) | |
2057 | goto err_tree_check; | |
2058 | } else { | |
2059 | lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, | |
2060 | fib->proto); | |
2061 | if (IS_ERR(lpm_tree)) | |
2062 | return PTR_ERR(lpm_tree); | |
2063 | fib->lpm_tree = lpm_tree; | |
2064 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib); | |
2065 | if (err) | |
2066 | goto err_tree_bind; | |
2067 | } | |
2068 | ||
2069 | mlxsw_sp_fib_node_prefix_inc(fib_node); | |
2070 | ||
2071 | return 0; | |
2072 | ||
2073 | err_tree_bind: | |
2074 | fib->lpm_tree = NULL; | |
2075 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
2076 | err_tree_check: | |
2077 | fib_node->fib = NULL; | |
2078 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
2079 | return err; | |
2080 | } | |
2081 | ||
2082 | static void mlxsw_sp_fib_node_fini(struct mlxsw_sp *mlxsw_sp, | |
2083 | struct mlxsw_sp_fib_node *fib_node) | |
2084 | { | |
2085 | struct mlxsw_sp_lpm_tree *lpm_tree = fib_node->fib->lpm_tree; | |
2086 | struct mlxsw_sp_fib *fib = fib_node->fib; | |
2087 | ||
2088 | mlxsw_sp_fib_node_prefix_dec(fib_node); | |
2089 | ||
2090 | if (mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) { | |
2091 | mlxsw_sp_vr_lpm_tree_unbind(mlxsw_sp, fib); | |
2092 | fib->lpm_tree = NULL; | |
2093 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
2094 | } else { | |
2095 | mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib, &fib->prefix_usage); | |
2096 | } | |
2097 | ||
2098 | fib_node->fib = NULL; | |
2099 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
2100 | } | |
2101 | ||
9aecce1c IS |
2102 | static struct mlxsw_sp_fib_node * |
2103 | mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp, | |
2104 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 2105 | { |
9aecce1c | 2106 | struct mlxsw_sp_fib_node *fib_node; |
76610ebb | 2107 | struct mlxsw_sp_fib *fib; |
9aecce1c IS |
2108 | struct mlxsw_sp_vr *vr; |
2109 | int err; | |
2110 | ||
76610ebb | 2111 | vr = mlxsw_sp_vr_get(mlxsw_sp, fen_info->tb_id); |
9aecce1c IS |
2112 | if (IS_ERR(vr)) |
2113 | return ERR_CAST(vr); | |
76610ebb | 2114 | fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV4); |
9aecce1c | 2115 | |
76610ebb | 2116 | fib_node = mlxsw_sp_fib_node_lookup(fib, &fen_info->dst, |
9aecce1c IS |
2117 | sizeof(fen_info->dst), |
2118 | fen_info->dst_len); | |
2119 | if (fib_node) | |
2120 | return fib_node; | |
5b004412 | 2121 | |
76610ebb | 2122 | fib_node = mlxsw_sp_fib_node_create(fib, &fen_info->dst, |
9aecce1c IS |
2123 | sizeof(fen_info->dst), |
2124 | fen_info->dst_len); | |
2125 | if (!fib_node) { | |
2126 | err = -ENOMEM; | |
2127 | goto err_fib_node_create; | |
5b004412 | 2128 | } |
9aecce1c | 2129 | |
76610ebb IS |
2130 | err = mlxsw_sp_fib_node_init(mlxsw_sp, fib_node, fib); |
2131 | if (err) | |
2132 | goto err_fib_node_init; | |
2133 | ||
9aecce1c IS |
2134 | return fib_node; |
2135 | ||
76610ebb IS |
2136 | err_fib_node_init: |
2137 | mlxsw_sp_fib_node_destroy(fib_node); | |
9aecce1c | 2138 | err_fib_node_create: |
76610ebb | 2139 | mlxsw_sp_vr_put(vr); |
9aecce1c | 2140 | return ERR_PTR(err); |
5b004412 JP |
2141 | } |
2142 | ||
9aecce1c IS |
2143 | static void mlxsw_sp_fib4_node_put(struct mlxsw_sp *mlxsw_sp, |
2144 | struct mlxsw_sp_fib_node *fib_node) | |
5b004412 | 2145 | { |
76610ebb | 2146 | struct mlxsw_sp_vr *vr = fib_node->fib->vr; |
5b004412 | 2147 | |
9aecce1c IS |
2148 | if (!list_empty(&fib_node->entry_list)) |
2149 | return; | |
76610ebb | 2150 | mlxsw_sp_fib_node_fini(mlxsw_sp, fib_node); |
9aecce1c | 2151 | mlxsw_sp_fib_node_destroy(fib_node); |
76610ebb | 2152 | mlxsw_sp_vr_put(vr); |
61c503f9 JP |
2153 | } |
2154 | ||
9aecce1c IS |
2155 | static struct mlxsw_sp_fib_entry * |
2156 | mlxsw_sp_fib4_node_entry_find(const struct mlxsw_sp_fib_node *fib_node, | |
2157 | const struct mlxsw_sp_fib_entry_params *params) | |
61c503f9 | 2158 | { |
61c503f9 | 2159 | struct mlxsw_sp_fib_entry *fib_entry; |
9aecce1c IS |
2160 | |
2161 | list_for_each_entry(fib_entry, &fib_node->entry_list, list) { | |
2162 | if (fib_entry->params.tb_id > params->tb_id) | |
2163 | continue; | |
2164 | if (fib_entry->params.tb_id != params->tb_id) | |
2165 | break; | |
2166 | if (fib_entry->params.tos > params->tos) | |
2167 | continue; | |
2168 | if (fib_entry->params.prio >= params->prio || | |
2169 | fib_entry->params.tos < params->tos) | |
2170 | return fib_entry; | |
2171 | } | |
2172 | ||
2173 | return NULL; | |
2174 | } | |
2175 | ||
4283bce5 IS |
2176 | static int mlxsw_sp_fib4_node_list_append(struct mlxsw_sp_fib_entry *fib_entry, |
2177 | struct mlxsw_sp_fib_entry *new_entry) | |
2178 | { | |
2179 | struct mlxsw_sp_fib_node *fib_node; | |
2180 | ||
2181 | if (WARN_ON(!fib_entry)) | |
2182 | return -EINVAL; | |
2183 | ||
2184 | fib_node = fib_entry->fib_node; | |
2185 | list_for_each_entry_from(fib_entry, &fib_node->entry_list, list) { | |
2186 | if (fib_entry->params.tb_id != new_entry->params.tb_id || | |
2187 | fib_entry->params.tos != new_entry->params.tos || | |
2188 | fib_entry->params.prio != new_entry->params.prio) | |
2189 | break; | |
2190 | } | |
2191 | ||
2192 | list_add_tail(&new_entry->list, &fib_entry->list); | |
2193 | return 0; | |
2194 | } | |
2195 | ||
9aecce1c IS |
2196 | static int |
2197 | mlxsw_sp_fib4_node_list_insert(struct mlxsw_sp_fib_node *fib_node, | |
4283bce5 | 2198 | struct mlxsw_sp_fib_entry *new_entry, |
599cf8f9 | 2199 | bool replace, bool append) |
9aecce1c IS |
2200 | { |
2201 | struct mlxsw_sp_fib_entry *fib_entry; | |
2202 | ||
2203 | fib_entry = mlxsw_sp_fib4_node_entry_find(fib_node, &new_entry->params); | |
2204 | ||
4283bce5 IS |
2205 | if (append) |
2206 | return mlxsw_sp_fib4_node_list_append(fib_entry, new_entry); | |
599cf8f9 IS |
2207 | if (replace && WARN_ON(!fib_entry)) |
2208 | return -EINVAL; | |
4283bce5 | 2209 | |
599cf8f9 IS |
2210 | /* Insert new entry before replaced one, so that we can later |
2211 | * remove the second. | |
2212 | */ | |
9aecce1c IS |
2213 | if (fib_entry) { |
2214 | list_add_tail(&new_entry->list, &fib_entry->list); | |
2215 | } else { | |
2216 | struct mlxsw_sp_fib_entry *last; | |
2217 | ||
2218 | list_for_each_entry(last, &fib_node->entry_list, list) { | |
2219 | if (new_entry->params.tb_id > last->params.tb_id) | |
2220 | break; | |
2221 | fib_entry = last; | |
2222 | } | |
2223 | ||
2224 | if (fib_entry) | |
2225 | list_add(&new_entry->list, &fib_entry->list); | |
2226 | else | |
2227 | list_add(&new_entry->list, &fib_node->entry_list); | |
2228 | } | |
2229 | ||
2230 | return 0; | |
2231 | } | |
2232 | ||
2233 | static void | |
2234 | mlxsw_sp_fib4_node_list_remove(struct mlxsw_sp_fib_entry *fib_entry) | |
2235 | { | |
2236 | list_del(&fib_entry->list); | |
2237 | } | |
2238 | ||
2239 | static int | |
2240 | mlxsw_sp_fib4_node_entry_add(struct mlxsw_sp *mlxsw_sp, | |
2241 | const struct mlxsw_sp_fib_node *fib_node, | |
2242 | struct mlxsw_sp_fib_entry *fib_entry) | |
2243 | { | |
2244 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) | |
2245 | return 0; | |
2246 | ||
2247 | /* To prevent packet loss, overwrite the previously offloaded | |
2248 | * entry. | |
2249 | */ | |
2250 | if (!list_is_singular(&fib_node->entry_list)) { | |
2251 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
2252 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
2253 | ||
2254 | mlxsw_sp_fib_entry_offload_refresh(n, op, 0); | |
2255 | } | |
2256 | ||
2257 | return mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
2258 | } | |
2259 | ||
2260 | static void | |
2261 | mlxsw_sp_fib4_node_entry_del(struct mlxsw_sp *mlxsw_sp, | |
2262 | const struct mlxsw_sp_fib_node *fib_node, | |
2263 | struct mlxsw_sp_fib_entry *fib_entry) | |
2264 | { | |
2265 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) | |
2266 | return; | |
2267 | ||
2268 | /* Promote the next entry by overwriting the deleted entry */ | |
2269 | if (!list_is_singular(&fib_node->entry_list)) { | |
2270 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
2271 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
2272 | ||
2273 | mlxsw_sp_fib_entry_update(mlxsw_sp, n); | |
2274 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0); | |
2275 | return; | |
2276 | } | |
2277 | ||
2278 | mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry); | |
2279 | } | |
2280 | ||
2281 | static int mlxsw_sp_fib4_node_entry_link(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 2282 | struct mlxsw_sp_fib_entry *fib_entry, |
599cf8f9 | 2283 | bool replace, bool append) |
9aecce1c IS |
2284 | { |
2285 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2286 | int err; | |
2287 | ||
599cf8f9 IS |
2288 | err = mlxsw_sp_fib4_node_list_insert(fib_node, fib_entry, replace, |
2289 | append); | |
9aecce1c IS |
2290 | if (err) |
2291 | return err; | |
2292 | ||
2293 | err = mlxsw_sp_fib4_node_entry_add(mlxsw_sp, fib_node, fib_entry); | |
2294 | if (err) | |
2295 | goto err_fib4_node_entry_add; | |
2296 | ||
9aecce1c IS |
2297 | return 0; |
2298 | ||
2299 | err_fib4_node_entry_add: | |
2300 | mlxsw_sp_fib4_node_list_remove(fib_entry); | |
2301 | return err; | |
2302 | } | |
2303 | ||
2304 | static void | |
2305 | mlxsw_sp_fib4_node_entry_unlink(struct mlxsw_sp *mlxsw_sp, | |
2306 | struct mlxsw_sp_fib_entry *fib_entry) | |
2307 | { | |
2308 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2309 | ||
9aecce1c IS |
2310 | mlxsw_sp_fib4_node_entry_del(mlxsw_sp, fib_node, fib_entry); |
2311 | mlxsw_sp_fib4_node_list_remove(fib_entry); | |
2312 | } | |
2313 | ||
599cf8f9 IS |
2314 | static void mlxsw_sp_fib4_entry_replace(struct mlxsw_sp *mlxsw_sp, |
2315 | struct mlxsw_sp_fib_entry *fib_entry, | |
2316 | bool replace) | |
2317 | { | |
2318 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2319 | struct mlxsw_sp_fib_entry *replaced; | |
2320 | ||
2321 | if (!replace) | |
2322 | return; | |
2323 | ||
2324 | /* We inserted the new entry before replaced one */ | |
2325 | replaced = list_next_entry(fib_entry, list); | |
2326 | ||
2327 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, replaced); | |
2328 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, replaced); | |
2329 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
2330 | } | |
2331 | ||
9aecce1c IS |
2332 | static int |
2333 | mlxsw_sp_router_fib4_add(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 2334 | const struct fib_entry_notifier_info *fen_info, |
599cf8f9 | 2335 | bool replace, bool append) |
9aecce1c IS |
2336 | { |
2337 | struct mlxsw_sp_fib_entry *fib_entry; | |
2338 | struct mlxsw_sp_fib_node *fib_node; | |
61c503f9 JP |
2339 | int err; |
2340 | ||
b45f64d1 JP |
2341 | if (mlxsw_sp->router.aborted) |
2342 | return 0; | |
2343 | ||
9aecce1c IS |
2344 | fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info); |
2345 | if (IS_ERR(fib_node)) { | |
2346 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to get FIB node\n"); | |
2347 | return PTR_ERR(fib_node); | |
b45f64d1 | 2348 | } |
61c503f9 | 2349 | |
9aecce1c IS |
2350 | fib_entry = mlxsw_sp_fib4_entry_create(mlxsw_sp, fib_node, fen_info); |
2351 | if (IS_ERR(fib_entry)) { | |
2352 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to create FIB entry\n"); | |
2353 | err = PTR_ERR(fib_entry); | |
2354 | goto err_fib4_entry_create; | |
2355 | } | |
5b004412 | 2356 | |
599cf8f9 IS |
2357 | err = mlxsw_sp_fib4_node_entry_link(mlxsw_sp, fib_entry, replace, |
2358 | append); | |
b45f64d1 | 2359 | if (err) { |
9aecce1c IS |
2360 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to link FIB entry to node\n"); |
2361 | goto err_fib4_node_entry_link; | |
b45f64d1 | 2362 | } |
9aecce1c | 2363 | |
599cf8f9 IS |
2364 | mlxsw_sp_fib4_entry_replace(mlxsw_sp, fib_entry, replace); |
2365 | ||
61c503f9 JP |
2366 | return 0; |
2367 | ||
9aecce1c IS |
2368 | err_fib4_node_entry_link: |
2369 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2370 | err_fib4_entry_create: | |
2371 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
61c503f9 JP |
2372 | return err; |
2373 | } | |
2374 | ||
37956d78 JP |
2375 | static void mlxsw_sp_router_fib4_del(struct mlxsw_sp *mlxsw_sp, |
2376 | struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 2377 | { |
61c503f9 | 2378 | struct mlxsw_sp_fib_entry *fib_entry; |
9aecce1c | 2379 | struct mlxsw_sp_fib_node *fib_node; |
61c503f9 | 2380 | |
b45f64d1 | 2381 | if (mlxsw_sp->router.aborted) |
37956d78 | 2382 | return; |
b45f64d1 | 2383 | |
9aecce1c IS |
2384 | fib_entry = mlxsw_sp_fib4_entry_lookup(mlxsw_sp, fen_info); |
2385 | if (WARN_ON(!fib_entry)) | |
37956d78 | 2386 | return; |
9aecce1c | 2387 | fib_node = fib_entry->fib_node; |
5b004412 | 2388 | |
9aecce1c IS |
2389 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry); |
2390 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2391 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
61c503f9 | 2392 | } |
b45f64d1 JP |
2393 | |
2394 | static int mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp) | |
2395 | { | |
2396 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
2397 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
b5d90e6d | 2398 | int i, err; |
b45f64d1 JP |
2399 | |
2400 | mlxsw_reg_ralta_pack(ralta_pl, true, MLXSW_REG_RALXX_PROTOCOL_IPV4, | |
2401 | MLXSW_SP_LPM_TREE_MIN); | |
2402 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); | |
2403 | if (err) | |
2404 | return err; | |
2405 | ||
2406 | mlxsw_reg_ralst_pack(ralst_pl, 0xff, MLXSW_SP_LPM_TREE_MIN); | |
2407 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); | |
2408 | if (err) | |
2409 | return err; | |
2410 | ||
b5d90e6d IS |
2411 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
2412 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router.vrs[i]; | |
2413 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
2414 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
b45f64d1 | 2415 | |
b5d90e6d IS |
2416 | if (!mlxsw_sp_vr_is_used(vr)) |
2417 | continue; | |
2418 | ||
2419 | mlxsw_reg_raltb_pack(raltb_pl, vr->id, | |
2420 | MLXSW_REG_RALXX_PROTOCOL_IPV4, | |
2421 | MLXSW_SP_LPM_TREE_MIN); | |
2422 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), | |
2423 | raltb_pl); | |
2424 | if (err) | |
2425 | return err; | |
2426 | ||
2427 | mlxsw_reg_ralue_pack4(ralue_pl, MLXSW_SP_L3_PROTO_IPV4, | |
2428 | MLXSW_REG_RALUE_OP_WRITE_WRITE, vr->id, 0, | |
2429 | 0); | |
2430 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); | |
2431 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), | |
2432 | ralue_pl); | |
2433 | if (err) | |
2434 | return err; | |
2435 | } | |
2436 | ||
2437 | return 0; | |
b45f64d1 JP |
2438 | } |
2439 | ||
9aecce1c IS |
2440 | static void mlxsw_sp_fib4_node_flush(struct mlxsw_sp *mlxsw_sp, |
2441 | struct mlxsw_sp_fib_node *fib_node) | |
2442 | { | |
2443 | struct mlxsw_sp_fib_entry *fib_entry, *tmp; | |
2444 | ||
2445 | list_for_each_entry_safe(fib_entry, tmp, &fib_node->entry_list, list) { | |
2446 | bool do_break = &tmp->list == &fib_node->entry_list; | |
2447 | ||
2448 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry); | |
2449 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2450 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
2451 | /* Break when entry list is empty and node was freed. | |
2452 | * Otherwise, we'll access freed memory in the next | |
2453 | * iteration. | |
2454 | */ | |
2455 | if (do_break) | |
2456 | break; | |
2457 | } | |
2458 | } | |
2459 | ||
2460 | static void mlxsw_sp_fib_node_flush(struct mlxsw_sp *mlxsw_sp, | |
2461 | struct mlxsw_sp_fib_node *fib_node) | |
2462 | { | |
76610ebb | 2463 | switch (fib_node->fib->proto) { |
9aecce1c IS |
2464 | case MLXSW_SP_L3_PROTO_IPV4: |
2465 | mlxsw_sp_fib4_node_flush(mlxsw_sp, fib_node); | |
2466 | break; | |
2467 | case MLXSW_SP_L3_PROTO_IPV6: | |
2468 | WARN_ON_ONCE(1); | |
2469 | break; | |
2470 | } | |
2471 | } | |
2472 | ||
76610ebb IS |
2473 | static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp, |
2474 | struct mlxsw_sp_vr *vr, | |
2475 | enum mlxsw_sp_l3proto proto) | |
b45f64d1 | 2476 | { |
76610ebb | 2477 | struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); |
9aecce1c | 2478 | struct mlxsw_sp_fib_node *fib_node, *tmp; |
76610ebb IS |
2479 | |
2480 | list_for_each_entry_safe(fib_node, tmp, &fib->node_list, list) { | |
2481 | bool do_break = &tmp->list == &fib->node_list; | |
2482 | ||
2483 | mlxsw_sp_fib_node_flush(mlxsw_sp, fib_node); | |
2484 | if (do_break) | |
2485 | break; | |
2486 | } | |
2487 | } | |
2488 | ||
2489 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp) | |
2490 | { | |
b45f64d1 | 2491 | int i; |
b45f64d1 | 2492 | |
c1a38311 | 2493 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
76610ebb | 2494 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router.vrs[i]; |
ac571de9 | 2495 | |
76610ebb | 2496 | if (!mlxsw_sp_vr_is_used(vr)) |
b45f64d1 | 2497 | continue; |
76610ebb | 2498 | mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4); |
b45f64d1 | 2499 | } |
ac571de9 IS |
2500 | } |
2501 | ||
2502 | static void mlxsw_sp_router_fib4_abort(struct mlxsw_sp *mlxsw_sp) | |
2503 | { | |
2504 | int err; | |
2505 | ||
d331d303 IS |
2506 | if (mlxsw_sp->router.aborted) |
2507 | return; | |
2508 | dev_warn(mlxsw_sp->bus_info->dev, "FIB abort triggered. Note that FIB entries are no longer being offloaded to this device.\n"); | |
ac571de9 | 2509 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
b45f64d1 JP |
2510 | mlxsw_sp->router.aborted = true; |
2511 | err = mlxsw_sp_router_set_abort_trap(mlxsw_sp); | |
2512 | if (err) | |
2513 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set abort trap.\n"); | |
2514 | } | |
2515 | ||
3057224e | 2516 | struct mlxsw_sp_fib_event_work { |
a0e4761d | 2517 | struct work_struct work; |
ad178c8e IS |
2518 | union { |
2519 | struct fib_entry_notifier_info fen_info; | |
5d7bfd14 | 2520 | struct fib_rule_notifier_info fr_info; |
ad178c8e IS |
2521 | struct fib_nh_notifier_info fnh_info; |
2522 | }; | |
3057224e IS |
2523 | struct mlxsw_sp *mlxsw_sp; |
2524 | unsigned long event; | |
2525 | }; | |
2526 | ||
2527 | static void mlxsw_sp_router_fib_event_work(struct work_struct *work) | |
b45f64d1 | 2528 | { |
3057224e | 2529 | struct mlxsw_sp_fib_event_work *fib_work = |
a0e4761d | 2530 | container_of(work, struct mlxsw_sp_fib_event_work, work); |
3057224e | 2531 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; |
5d7bfd14 | 2532 | struct fib_rule *rule; |
599cf8f9 | 2533 | bool replace, append; |
b45f64d1 JP |
2534 | int err; |
2535 | ||
3057224e IS |
2536 | /* Protect internal structures from changes */ |
2537 | rtnl_lock(); | |
2538 | switch (fib_work->event) { | |
599cf8f9 | 2539 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 2540 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
b45f64d1 | 2541 | case FIB_EVENT_ENTRY_ADD: |
599cf8f9 | 2542 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; |
4283bce5 IS |
2543 | append = fib_work->event == FIB_EVENT_ENTRY_APPEND; |
2544 | err = mlxsw_sp_router_fib4_add(mlxsw_sp, &fib_work->fen_info, | |
599cf8f9 | 2545 | replace, append); |
b45f64d1 JP |
2546 | if (err) |
2547 | mlxsw_sp_router_fib4_abort(mlxsw_sp); | |
3057224e | 2548 | fib_info_put(fib_work->fen_info.fi); |
b45f64d1 JP |
2549 | break; |
2550 | case FIB_EVENT_ENTRY_DEL: | |
3057224e IS |
2551 | mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info); |
2552 | fib_info_put(fib_work->fen_info.fi); | |
b45f64d1 JP |
2553 | break; |
2554 | case FIB_EVENT_RULE_ADD: /* fall through */ | |
2555 | case FIB_EVENT_RULE_DEL: | |
5d7bfd14 IS |
2556 | rule = fib_work->fr_info.rule; |
2557 | if (!fib4_rule_default(rule)) | |
2558 | mlxsw_sp_router_fib4_abort(mlxsw_sp); | |
2559 | fib_rule_put(rule); | |
b45f64d1 | 2560 | break; |
ad178c8e IS |
2561 | case FIB_EVENT_NH_ADD: /* fall through */ |
2562 | case FIB_EVENT_NH_DEL: | |
2563 | mlxsw_sp_nexthop_event(mlxsw_sp, fib_work->event, | |
2564 | fib_work->fnh_info.fib_nh); | |
2565 | fib_info_put(fib_work->fnh_info.fib_nh->nh_parent); | |
2566 | break; | |
b45f64d1 | 2567 | } |
3057224e IS |
2568 | rtnl_unlock(); |
2569 | kfree(fib_work); | |
2570 | } | |
2571 | ||
2572 | /* Called with rcu_read_lock() */ | |
2573 | static int mlxsw_sp_router_fib_event(struct notifier_block *nb, | |
2574 | unsigned long event, void *ptr) | |
2575 | { | |
2576 | struct mlxsw_sp *mlxsw_sp = container_of(nb, struct mlxsw_sp, fib_nb); | |
2577 | struct mlxsw_sp_fib_event_work *fib_work; | |
2578 | struct fib_notifier_info *info = ptr; | |
2579 | ||
2580 | if (!net_eq(info->net, &init_net)) | |
2581 | return NOTIFY_DONE; | |
2582 | ||
2583 | fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC); | |
2584 | if (WARN_ON(!fib_work)) | |
2585 | return NOTIFY_BAD; | |
2586 | ||
a0e4761d | 2587 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fib_event_work); |
3057224e IS |
2588 | fib_work->mlxsw_sp = mlxsw_sp; |
2589 | fib_work->event = event; | |
2590 | ||
2591 | switch (event) { | |
599cf8f9 | 2592 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 2593 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
3057224e IS |
2594 | case FIB_EVENT_ENTRY_ADD: /* fall through */ |
2595 | case FIB_EVENT_ENTRY_DEL: | |
2596 | memcpy(&fib_work->fen_info, ptr, sizeof(fib_work->fen_info)); | |
2597 | /* Take referece on fib_info to prevent it from being | |
2598 | * freed while work is queued. Release it afterwards. | |
2599 | */ | |
2600 | fib_info_hold(fib_work->fen_info.fi); | |
2601 | break; | |
5d7bfd14 IS |
2602 | case FIB_EVENT_RULE_ADD: /* fall through */ |
2603 | case FIB_EVENT_RULE_DEL: | |
2604 | memcpy(&fib_work->fr_info, ptr, sizeof(fib_work->fr_info)); | |
2605 | fib_rule_get(fib_work->fr_info.rule); | |
2606 | break; | |
ad178c8e IS |
2607 | case FIB_EVENT_NH_ADD: /* fall through */ |
2608 | case FIB_EVENT_NH_DEL: | |
2609 | memcpy(&fib_work->fnh_info, ptr, sizeof(fib_work->fnh_info)); | |
2610 | fib_info_hold(fib_work->fnh_info.fib_nh->nh_parent); | |
2611 | break; | |
3057224e IS |
2612 | } |
2613 | ||
a0e4761d | 2614 | mlxsw_core_schedule_work(&fib_work->work); |
3057224e | 2615 | |
b45f64d1 JP |
2616 | return NOTIFY_DONE; |
2617 | } | |
2618 | ||
4724ba56 IS |
2619 | static struct mlxsw_sp_rif * |
2620 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
2621 | const struct net_device *dev) | |
2622 | { | |
2623 | int i; | |
2624 | ||
2625 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
2626 | if (mlxsw_sp->rifs[i] && mlxsw_sp->rifs[i]->dev == dev) | |
2627 | return mlxsw_sp->rifs[i]; | |
2628 | ||
2629 | return NULL; | |
2630 | } | |
2631 | ||
2632 | static int mlxsw_sp_router_rif_disable(struct mlxsw_sp *mlxsw_sp, u16 rif) | |
2633 | { | |
2634 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
2635 | int err; | |
2636 | ||
2637 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif); | |
2638 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2639 | if (WARN_ON_ONCE(err)) | |
2640 | return err; | |
2641 | ||
2642 | mlxsw_reg_ritr_enable_set(ritr_pl, false); | |
2643 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2644 | } | |
2645 | ||
2646 | static void mlxsw_sp_router_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
2647 | struct mlxsw_sp_rif *r) | |
2648 | { | |
2649 | mlxsw_sp_router_rif_disable(mlxsw_sp, r->rif); | |
2650 | mlxsw_sp_nexthop_rif_gone_sync(mlxsw_sp, r); | |
2651 | mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, r); | |
2652 | } | |
2653 | ||
2654 | static bool mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *r, | |
2655 | const struct in_device *in_dev, | |
2656 | unsigned long event) | |
2657 | { | |
2658 | switch (event) { | |
2659 | case NETDEV_UP: | |
2660 | if (!r) | |
2661 | return true; | |
2662 | return false; | |
2663 | case NETDEV_DOWN: | |
9db032bb | 2664 | if (r && !in_dev->ifa_list && !netif_is_l3_slave(r->dev)) |
4724ba56 IS |
2665 | return true; |
2666 | /* It is possible we already removed the RIF ourselves | |
2667 | * if it was assigned to a netdev that is now a bridge | |
2668 | * or LAG slave. | |
2669 | */ | |
2670 | return false; | |
2671 | } | |
2672 | ||
2673 | return false; | |
2674 | } | |
2675 | ||
2676 | #define MLXSW_SP_INVALID_RIF 0xffff | |
2677 | static int mlxsw_sp_avail_rif_get(struct mlxsw_sp *mlxsw_sp) | |
2678 | { | |
2679 | int i; | |
2680 | ||
2681 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
2682 | if (!mlxsw_sp->rifs[i]) | |
2683 | return i; | |
2684 | ||
2685 | return MLXSW_SP_INVALID_RIF; | |
2686 | } | |
2687 | ||
2688 | static void mlxsw_sp_vport_rif_sp_attr_get(struct mlxsw_sp_port *mlxsw_sp_vport, | |
2689 | bool *p_lagged, u16 *p_system_port) | |
2690 | { | |
2691 | u8 local_port = mlxsw_sp_vport->local_port; | |
2692 | ||
2693 | *p_lagged = mlxsw_sp_vport->lagged; | |
2694 | *p_system_port = *p_lagged ? mlxsw_sp_vport->lag_id : local_port; | |
2695 | } | |
2696 | ||
2697 | static int mlxsw_sp_vport_rif_sp_op(struct mlxsw_sp_port *mlxsw_sp_vport, | |
6913229e IS |
2698 | u16 vr_id, struct net_device *l3_dev, |
2699 | u16 rif, bool create) | |
4724ba56 IS |
2700 | { |
2701 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
2702 | bool lagged = mlxsw_sp_vport->lagged; | |
2703 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
2704 | u16 system_port; | |
2705 | ||
6913229e | 2706 | mlxsw_reg_ritr_pack(ritr_pl, create, MLXSW_REG_RITR_SP_IF, rif, vr_id, |
4724ba56 IS |
2707 | l3_dev->mtu, l3_dev->dev_addr); |
2708 | ||
2709 | mlxsw_sp_vport_rif_sp_attr_get(mlxsw_sp_vport, &lagged, &system_port); | |
2710 | mlxsw_reg_ritr_sp_if_pack(ritr_pl, lagged, system_port, | |
2711 | mlxsw_sp_vport_vid_get(mlxsw_sp_vport)); | |
2712 | ||
2713 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2714 | } | |
2715 | ||
2716 | static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport); | |
2717 | ||
2718 | static u16 mlxsw_sp_rif_sp_to_fid(u16 rif) | |
2719 | { | |
2720 | return MLXSW_SP_RFID_BASE + rif; | |
2721 | } | |
2722 | ||
2723 | static struct mlxsw_sp_fid * | |
2724 | mlxsw_sp_rfid_alloc(u16 fid, struct net_device *l3_dev) | |
2725 | { | |
2726 | struct mlxsw_sp_fid *f; | |
2727 | ||
2728 | f = kzalloc(sizeof(*f), GFP_KERNEL); | |
2729 | if (!f) | |
2730 | return NULL; | |
2731 | ||
2732 | f->leave = mlxsw_sp_vport_rif_sp_leave; | |
2733 | f->ref_count = 0; | |
2734 | f->dev = l3_dev; | |
2735 | f->fid = fid; | |
2736 | ||
2737 | return f; | |
2738 | } | |
2739 | ||
2740 | static struct mlxsw_sp_rif * | |
6913229e IS |
2741 | mlxsw_sp_rif_alloc(u16 rif, u16 vr_id, struct net_device *l3_dev, |
2742 | struct mlxsw_sp_fid *f) | |
4724ba56 IS |
2743 | { |
2744 | struct mlxsw_sp_rif *r; | |
2745 | ||
2746 | r = kzalloc(sizeof(*r), GFP_KERNEL); | |
2747 | if (!r) | |
2748 | return NULL; | |
2749 | ||
2750 | INIT_LIST_HEAD(&r->nexthop_list); | |
2751 | INIT_LIST_HEAD(&r->neigh_list); | |
2752 | ether_addr_copy(r->addr, l3_dev->dev_addr); | |
2753 | r->mtu = l3_dev->mtu; | |
6913229e | 2754 | r->vr_id = vr_id; |
4724ba56 IS |
2755 | r->dev = l3_dev; |
2756 | r->rif = rif; | |
2757 | r->f = f; | |
2758 | ||
2759 | return r; | |
2760 | } | |
2761 | ||
2762 | static struct mlxsw_sp_rif * | |
2763 | mlxsw_sp_vport_rif_sp_create(struct mlxsw_sp_port *mlxsw_sp_vport, | |
2764 | struct net_device *l3_dev) | |
2765 | { | |
2766 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
57837885 | 2767 | u32 tb_id = l3mdev_fib_table(l3_dev); |
6913229e | 2768 | struct mlxsw_sp_vr *vr; |
4724ba56 IS |
2769 | struct mlxsw_sp_fid *f; |
2770 | struct mlxsw_sp_rif *r; | |
2771 | u16 fid, rif; | |
2772 | int err; | |
2773 | ||
2774 | rif = mlxsw_sp_avail_rif_get(mlxsw_sp); | |
2775 | if (rif == MLXSW_SP_INVALID_RIF) | |
2776 | return ERR_PTR(-ERANGE); | |
2777 | ||
57837885 | 2778 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN); |
6913229e IS |
2779 | if (IS_ERR(vr)) |
2780 | return ERR_CAST(vr); | |
2781 | ||
2782 | err = mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, vr->id, l3_dev, rif, | |
2783 | true); | |
4724ba56 | 2784 | if (err) |
6913229e | 2785 | goto err_vport_rif_sp_op; |
4724ba56 IS |
2786 | |
2787 | fid = mlxsw_sp_rif_sp_to_fid(rif); | |
2788 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, true); | |
2789 | if (err) | |
2790 | goto err_rif_fdb_op; | |
2791 | ||
2792 | f = mlxsw_sp_rfid_alloc(fid, l3_dev); | |
2793 | if (!f) { | |
2794 | err = -ENOMEM; | |
2795 | goto err_rfid_alloc; | |
2796 | } | |
2797 | ||
6913229e | 2798 | r = mlxsw_sp_rif_alloc(rif, vr->id, l3_dev, f); |
4724ba56 IS |
2799 | if (!r) { |
2800 | err = -ENOMEM; | |
2801 | goto err_rif_alloc; | |
2802 | } | |
2803 | ||
2804 | f->r = r; | |
2805 | mlxsw_sp->rifs[rif] = r; | |
6913229e | 2806 | vr->rif_count++; |
4724ba56 IS |
2807 | |
2808 | return r; | |
2809 | ||
2810 | err_rif_alloc: | |
2811 | kfree(f); | |
2812 | err_rfid_alloc: | |
2813 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false); | |
2814 | err_rif_fdb_op: | |
6913229e IS |
2815 | mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, vr->id, l3_dev, rif, false); |
2816 | err_vport_rif_sp_op: | |
2817 | mlxsw_sp_vr_put(vr); | |
4724ba56 IS |
2818 | return ERR_PTR(err); |
2819 | } | |
2820 | ||
2821 | static void mlxsw_sp_vport_rif_sp_destroy(struct mlxsw_sp_port *mlxsw_sp_vport, | |
2822 | struct mlxsw_sp_rif *r) | |
2823 | { | |
2824 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
6913229e | 2825 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router.vrs[r->vr_id]; |
4724ba56 IS |
2826 | struct net_device *l3_dev = r->dev; |
2827 | struct mlxsw_sp_fid *f = r->f; | |
2828 | u16 fid = f->fid; | |
2829 | u16 rif = r->rif; | |
2830 | ||
2831 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, r); | |
2832 | ||
6913229e | 2833 | vr->rif_count--; |
4724ba56 IS |
2834 | mlxsw_sp->rifs[rif] = NULL; |
2835 | f->r = NULL; | |
2836 | ||
2837 | kfree(r); | |
2838 | ||
2839 | kfree(f); | |
2840 | ||
2841 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false); | |
2842 | ||
6913229e IS |
2843 | mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, vr->id, l3_dev, rif, false); |
2844 | ||
2845 | mlxsw_sp_vr_put(vr); | |
4724ba56 IS |
2846 | } |
2847 | ||
2848 | static int mlxsw_sp_vport_rif_sp_join(struct mlxsw_sp_port *mlxsw_sp_vport, | |
2849 | struct net_device *l3_dev) | |
2850 | { | |
2851 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
2852 | struct mlxsw_sp_rif *r; | |
2853 | ||
2854 | r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); | |
2855 | if (!r) { | |
2856 | r = mlxsw_sp_vport_rif_sp_create(mlxsw_sp_vport, l3_dev); | |
2857 | if (IS_ERR(r)) | |
2858 | return PTR_ERR(r); | |
2859 | } | |
2860 | ||
2861 | mlxsw_sp_vport_fid_set(mlxsw_sp_vport, r->f); | |
2862 | r->f->ref_count++; | |
2863 | ||
2864 | netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", r->f->fid); | |
2865 | ||
2866 | return 0; | |
2867 | } | |
2868 | ||
2869 | static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport) | |
2870 | { | |
2871 | struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport); | |
2872 | ||
2873 | netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid); | |
2874 | ||
2875 | mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL); | |
2876 | if (--f->ref_count == 0) | |
2877 | mlxsw_sp_vport_rif_sp_destroy(mlxsw_sp_vport, f->r); | |
2878 | } | |
2879 | ||
2880 | static int mlxsw_sp_inetaddr_vport_event(struct net_device *l3_dev, | |
2881 | struct net_device *port_dev, | |
2882 | unsigned long event, u16 vid) | |
2883 | { | |
2884 | struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev); | |
2885 | struct mlxsw_sp_port *mlxsw_sp_vport; | |
2886 | ||
2887 | mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid); | |
2888 | if (WARN_ON(!mlxsw_sp_vport)) | |
2889 | return -EINVAL; | |
2890 | ||
2891 | switch (event) { | |
2892 | case NETDEV_UP: | |
2893 | return mlxsw_sp_vport_rif_sp_join(mlxsw_sp_vport, l3_dev); | |
2894 | case NETDEV_DOWN: | |
2895 | mlxsw_sp_vport_rif_sp_leave(mlxsw_sp_vport); | |
2896 | break; | |
2897 | } | |
2898 | ||
2899 | return 0; | |
2900 | } | |
2901 | ||
2902 | static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev, | |
2903 | unsigned long event) | |
2904 | { | |
2905 | if (netif_is_bridge_port(port_dev) || netif_is_lag_port(port_dev)) | |
2906 | return 0; | |
2907 | ||
2908 | return mlxsw_sp_inetaddr_vport_event(port_dev, port_dev, event, 1); | |
2909 | } | |
2910 | ||
2911 | static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev, | |
2912 | struct net_device *lag_dev, | |
2913 | unsigned long event, u16 vid) | |
2914 | { | |
2915 | struct net_device *port_dev; | |
2916 | struct list_head *iter; | |
2917 | int err; | |
2918 | ||
2919 | netdev_for_each_lower_dev(lag_dev, port_dev, iter) { | |
2920 | if (mlxsw_sp_port_dev_check(port_dev)) { | |
2921 | err = mlxsw_sp_inetaddr_vport_event(l3_dev, port_dev, | |
2922 | event, vid); | |
2923 | if (err) | |
2924 | return err; | |
2925 | } | |
2926 | } | |
2927 | ||
2928 | return 0; | |
2929 | } | |
2930 | ||
2931 | static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev, | |
2932 | unsigned long event) | |
2933 | { | |
2934 | if (netif_is_bridge_port(lag_dev)) | |
2935 | return 0; | |
2936 | ||
2937 | return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1); | |
2938 | } | |
2939 | ||
2940 | static struct mlxsw_sp_fid *mlxsw_sp_bridge_fid_get(struct mlxsw_sp *mlxsw_sp, | |
2941 | struct net_device *l3_dev) | |
2942 | { | |
2943 | u16 fid; | |
2944 | ||
2945 | if (is_vlan_dev(l3_dev)) | |
2946 | fid = vlan_dev_vlan_id(l3_dev); | |
2947 | else if (mlxsw_sp->master_bridge.dev == l3_dev) | |
2948 | fid = 1; | |
2949 | else | |
2950 | return mlxsw_sp_vfid_find(mlxsw_sp, l3_dev); | |
2951 | ||
2952 | return mlxsw_sp_fid_find(mlxsw_sp, fid); | |
2953 | } | |
2954 | ||
2955 | static enum mlxsw_flood_table_type mlxsw_sp_flood_table_type_get(u16 fid) | |
2956 | { | |
2957 | return mlxsw_sp_fid_is_vfid(fid) ? MLXSW_REG_SFGC_TABLE_TYPE_FID : | |
2958 | MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST; | |
2959 | } | |
2960 | ||
2961 | static u16 mlxsw_sp_flood_table_index_get(u16 fid) | |
2962 | { | |
2963 | return mlxsw_sp_fid_is_vfid(fid) ? mlxsw_sp_fid_to_vfid(fid) : fid; | |
2964 | } | |
2965 | ||
2966 | static int mlxsw_sp_router_port_flood_set(struct mlxsw_sp *mlxsw_sp, u16 fid, | |
2967 | bool set) | |
2968 | { | |
2969 | enum mlxsw_flood_table_type table_type; | |
2970 | char *sftr_pl; | |
2971 | u16 index; | |
2972 | int err; | |
2973 | ||
2974 | sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL); | |
2975 | if (!sftr_pl) | |
2976 | return -ENOMEM; | |
2977 | ||
2978 | table_type = mlxsw_sp_flood_table_type_get(fid); | |
2979 | index = mlxsw_sp_flood_table_index_get(fid); | |
2980 | mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BC, index, table_type, | |
2981 | 1, MLXSW_PORT_ROUTER_PORT, set); | |
2982 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); | |
2983 | ||
2984 | kfree(sftr_pl); | |
2985 | return err; | |
2986 | } | |
2987 | ||
2988 | static enum mlxsw_reg_ritr_if_type mlxsw_sp_rif_type_get(u16 fid) | |
2989 | { | |
2990 | if (mlxsw_sp_fid_is_vfid(fid)) | |
2991 | return MLXSW_REG_RITR_FID_IF; | |
2992 | else | |
2993 | return MLXSW_REG_RITR_VLAN_IF; | |
2994 | } | |
2995 | ||
6913229e | 2996 | static int mlxsw_sp_rif_bridge_op(struct mlxsw_sp *mlxsw_sp, u16 vr_id, |
4724ba56 IS |
2997 | struct net_device *l3_dev, |
2998 | u16 fid, u16 rif, | |
2999 | bool create) | |
3000 | { | |
3001 | enum mlxsw_reg_ritr_if_type rif_type; | |
3002 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
3003 | ||
3004 | rif_type = mlxsw_sp_rif_type_get(fid); | |
6913229e | 3005 | mlxsw_reg_ritr_pack(ritr_pl, create, rif_type, rif, vr_id, l3_dev->mtu, |
4724ba56 IS |
3006 | l3_dev->dev_addr); |
3007 | mlxsw_reg_ritr_fid_set(ritr_pl, rif_type, fid); | |
3008 | ||
3009 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
3010 | } | |
3011 | ||
3012 | static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp, | |
3013 | struct net_device *l3_dev, | |
3014 | struct mlxsw_sp_fid *f) | |
3015 | { | |
57837885 | 3016 | u32 tb_id = l3mdev_fib_table(l3_dev); |
6913229e | 3017 | struct mlxsw_sp_vr *vr; |
4724ba56 IS |
3018 | struct mlxsw_sp_rif *r; |
3019 | u16 rif; | |
3020 | int err; | |
3021 | ||
3022 | rif = mlxsw_sp_avail_rif_get(mlxsw_sp); | |
3023 | if (rif == MLXSW_SP_INVALID_RIF) | |
3024 | return -ERANGE; | |
3025 | ||
57837885 | 3026 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN); |
6913229e IS |
3027 | if (IS_ERR(vr)) |
3028 | return PTR_ERR(vr); | |
3029 | ||
4724ba56 IS |
3030 | err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true); |
3031 | if (err) | |
6913229e | 3032 | goto err_port_flood_set; |
4724ba56 | 3033 | |
6913229e IS |
3034 | err = mlxsw_sp_rif_bridge_op(mlxsw_sp, vr->id, l3_dev, f->fid, rif, |
3035 | true); | |
4724ba56 IS |
3036 | if (err) |
3037 | goto err_rif_bridge_op; | |
3038 | ||
3039 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, true); | |
3040 | if (err) | |
3041 | goto err_rif_fdb_op; | |
3042 | ||
6913229e | 3043 | r = mlxsw_sp_rif_alloc(rif, vr->id, l3_dev, f); |
4724ba56 IS |
3044 | if (!r) { |
3045 | err = -ENOMEM; | |
3046 | goto err_rif_alloc; | |
3047 | } | |
3048 | ||
3049 | f->r = r; | |
3050 | mlxsw_sp->rifs[rif] = r; | |
6913229e | 3051 | vr->rif_count++; |
4724ba56 IS |
3052 | |
3053 | netdev_dbg(l3_dev, "RIF=%d created\n", rif); | |
3054 | ||
3055 | return 0; | |
3056 | ||
3057 | err_rif_alloc: | |
3058 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false); | |
3059 | err_rif_fdb_op: | |
6913229e | 3060 | mlxsw_sp_rif_bridge_op(mlxsw_sp, vr->id, l3_dev, f->fid, rif, false); |
4724ba56 IS |
3061 | err_rif_bridge_op: |
3062 | mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); | |
6913229e IS |
3063 | err_port_flood_set: |
3064 | mlxsw_sp_vr_put(vr); | |
4724ba56 IS |
3065 | return err; |
3066 | } | |
3067 | ||
3068 | void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp, | |
3069 | struct mlxsw_sp_rif *r) | |
3070 | { | |
6913229e | 3071 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router.vrs[r->vr_id]; |
4724ba56 IS |
3072 | struct net_device *l3_dev = r->dev; |
3073 | struct mlxsw_sp_fid *f = r->f; | |
3074 | u16 rif = r->rif; | |
3075 | ||
3076 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, r); | |
3077 | ||
6913229e | 3078 | vr->rif_count--; |
4724ba56 IS |
3079 | mlxsw_sp->rifs[rif] = NULL; |
3080 | f->r = NULL; | |
3081 | ||
3082 | kfree(r); | |
3083 | ||
3084 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false); | |
3085 | ||
6913229e | 3086 | mlxsw_sp_rif_bridge_op(mlxsw_sp, vr->id, l3_dev, f->fid, rif, false); |
4724ba56 IS |
3087 | |
3088 | mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); | |
3089 | ||
6913229e IS |
3090 | mlxsw_sp_vr_put(vr); |
3091 | ||
4724ba56 IS |
3092 | netdev_dbg(l3_dev, "RIF=%d destroyed\n", rif); |
3093 | } | |
3094 | ||
3095 | static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev, | |
3096 | struct net_device *br_dev, | |
3097 | unsigned long event) | |
3098 | { | |
3099 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); | |
3100 | struct mlxsw_sp_fid *f; | |
3101 | ||
3102 | /* FID can either be an actual FID if the L3 device is the | |
3103 | * VLAN-aware bridge or a VLAN device on top. Otherwise, the | |
3104 | * L3 device is a VLAN-unaware bridge and we get a vFID. | |
3105 | */ | |
3106 | f = mlxsw_sp_bridge_fid_get(mlxsw_sp, l3_dev); | |
3107 | if (WARN_ON(!f)) | |
3108 | return -EINVAL; | |
3109 | ||
3110 | switch (event) { | |
3111 | case NETDEV_UP: | |
3112 | return mlxsw_sp_rif_bridge_create(mlxsw_sp, l3_dev, f); | |
3113 | case NETDEV_DOWN: | |
3114 | mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r); | |
3115 | break; | |
3116 | } | |
3117 | ||
3118 | return 0; | |
3119 | } | |
3120 | ||
3121 | static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev, | |
3122 | unsigned long event) | |
3123 | { | |
3124 | struct net_device *real_dev = vlan_dev_real_dev(vlan_dev); | |
3125 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(vlan_dev); | |
3126 | u16 vid = vlan_dev_vlan_id(vlan_dev); | |
3127 | ||
3128 | if (mlxsw_sp_port_dev_check(real_dev)) | |
3129 | return mlxsw_sp_inetaddr_vport_event(vlan_dev, real_dev, event, | |
3130 | vid); | |
3131 | else if (netif_is_lag_master(real_dev)) | |
3132 | return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event, | |
3133 | vid); | |
3134 | else if (netif_is_bridge_master(real_dev) && | |
3135 | mlxsw_sp->master_bridge.dev == real_dev) | |
3136 | return mlxsw_sp_inetaddr_bridge_event(vlan_dev, real_dev, | |
3137 | event); | |
3138 | ||
3139 | return 0; | |
3140 | } | |
3141 | ||
3142 | int mlxsw_sp_inetaddr_event(struct notifier_block *unused, | |
3143 | unsigned long event, void *ptr) | |
3144 | { | |
3145 | struct in_ifaddr *ifa = (struct in_ifaddr *) ptr; | |
3146 | struct net_device *dev = ifa->ifa_dev->dev; | |
3147 | struct mlxsw_sp *mlxsw_sp; | |
3148 | struct mlxsw_sp_rif *r; | |
3149 | int err = 0; | |
3150 | ||
3151 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
3152 | if (!mlxsw_sp) | |
3153 | goto out; | |
3154 | ||
3155 | r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
3156 | if (!mlxsw_sp_rif_should_config(r, ifa->ifa_dev, event)) | |
3157 | goto out; | |
3158 | ||
3159 | if (mlxsw_sp_port_dev_check(dev)) | |
3160 | err = mlxsw_sp_inetaddr_port_event(dev, event); | |
3161 | else if (netif_is_lag_master(dev)) | |
3162 | err = mlxsw_sp_inetaddr_lag_event(dev, event); | |
3163 | else if (netif_is_bridge_master(dev)) | |
3164 | err = mlxsw_sp_inetaddr_bridge_event(dev, dev, event); | |
3165 | else if (is_vlan_dev(dev)) | |
3166 | err = mlxsw_sp_inetaddr_vlan_event(dev, event); | |
3167 | ||
3168 | out: | |
3169 | return notifier_from_errno(err); | |
3170 | } | |
3171 | ||
3172 | static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif, | |
3173 | const char *mac, int mtu) | |
3174 | { | |
3175 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
3176 | int err; | |
3177 | ||
3178 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif); | |
3179 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
3180 | if (err) | |
3181 | return err; | |
3182 | ||
3183 | mlxsw_reg_ritr_mtu_set(ritr_pl, mtu); | |
3184 | mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac); | |
3185 | mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE); | |
3186 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
3187 | } | |
3188 | ||
3189 | int mlxsw_sp_netdevice_router_port_event(struct net_device *dev) | |
3190 | { | |
3191 | struct mlxsw_sp *mlxsw_sp; | |
3192 | struct mlxsw_sp_rif *r; | |
3193 | int err; | |
3194 | ||
3195 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
3196 | if (!mlxsw_sp) | |
3197 | return 0; | |
3198 | ||
3199 | r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
3200 | if (!r) | |
3201 | return 0; | |
3202 | ||
3203 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, r->addr, r->f->fid, false); | |
3204 | if (err) | |
3205 | return err; | |
3206 | ||
3207 | err = mlxsw_sp_rif_edit(mlxsw_sp, r->rif, dev->dev_addr, dev->mtu); | |
3208 | if (err) | |
3209 | goto err_rif_edit; | |
3210 | ||
3211 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, r->f->fid, true); | |
3212 | if (err) | |
3213 | goto err_rif_fdb_op; | |
3214 | ||
3215 | ether_addr_copy(r->addr, dev->dev_addr); | |
3216 | r->mtu = dev->mtu; | |
3217 | ||
3218 | netdev_dbg(dev, "Updated RIF=%d\n", r->rif); | |
3219 | ||
3220 | return 0; | |
3221 | ||
3222 | err_rif_fdb_op: | |
3223 | mlxsw_sp_rif_edit(mlxsw_sp, r->rif, r->addr, r->mtu); | |
3224 | err_rif_edit: | |
3225 | mlxsw_sp_rif_fdb_op(mlxsw_sp, r->addr, r->f->fid, true); | |
3226 | return err; | |
3227 | } | |
3228 | ||
c3852ef7 IS |
3229 | static void mlxsw_sp_router_fib_dump_flush(struct notifier_block *nb) |
3230 | { | |
3231 | struct mlxsw_sp *mlxsw_sp = container_of(nb, struct mlxsw_sp, fib_nb); | |
3232 | ||
3233 | /* Flush pending FIB notifications and then flush the device's | |
3234 | * table before requesting another dump. The FIB notification | |
3235 | * block is unregistered, so no need to take RTNL. | |
3236 | */ | |
3237 | mlxsw_core_flush_owq(); | |
3238 | mlxsw_sp_router_fib_flush(mlxsw_sp); | |
3239 | } | |
3240 | ||
4724ba56 IS |
3241 | static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
3242 | { | |
3243 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
3244 | u64 max_rifs; | |
3245 | int err; | |
3246 | ||
3247 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS)) | |
3248 | return -EIO; | |
3249 | ||
3250 | max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); | |
3251 | mlxsw_sp->rifs = kcalloc(max_rifs, sizeof(struct mlxsw_sp_rif *), | |
3252 | GFP_KERNEL); | |
3253 | if (!mlxsw_sp->rifs) | |
3254 | return -ENOMEM; | |
3255 | ||
3256 | mlxsw_reg_rgcr_pack(rgcr_pl, true); | |
3257 | mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs); | |
3258 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
3259 | if (err) | |
3260 | goto err_rgcr_fail; | |
3261 | ||
3262 | return 0; | |
3263 | ||
3264 | err_rgcr_fail: | |
3265 | kfree(mlxsw_sp->rifs); | |
3266 | return err; | |
3267 | } | |
3268 | ||
3269 | static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
3270 | { | |
3271 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
3272 | int i; | |
3273 | ||
3274 | mlxsw_reg_rgcr_pack(rgcr_pl, false); | |
3275 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
3276 | ||
3277 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
3278 | WARN_ON_ONCE(mlxsw_sp->rifs[i]); | |
3279 | ||
3280 | kfree(mlxsw_sp->rifs); | |
3281 | } | |
3282 | ||
b45f64d1 JP |
3283 | int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
3284 | { | |
3285 | int err; | |
3286 | ||
3287 | INIT_LIST_HEAD(&mlxsw_sp->router.nexthop_neighs_list); | |
b45f64d1 JP |
3288 | err = __mlxsw_sp_router_init(mlxsw_sp); |
3289 | if (err) | |
3290 | return err; | |
3291 | ||
c53b8e1b IS |
3292 | err = rhashtable_init(&mlxsw_sp->router.nexthop_ht, |
3293 | &mlxsw_sp_nexthop_ht_params); | |
3294 | if (err) | |
3295 | goto err_nexthop_ht_init; | |
3296 | ||
e9ad5e7d IS |
3297 | err = rhashtable_init(&mlxsw_sp->router.nexthop_group_ht, |
3298 | &mlxsw_sp_nexthop_group_ht_params); | |
3299 | if (err) | |
3300 | goto err_nexthop_group_ht_init; | |
3301 | ||
b45f64d1 JP |
3302 | mlxsw_sp_lpm_init(mlxsw_sp); |
3303 | err = mlxsw_sp_vrs_init(mlxsw_sp); | |
3304 | if (err) | |
3305 | goto err_vrs_init; | |
3306 | ||
8c9583a8 | 3307 | err = mlxsw_sp_neigh_init(mlxsw_sp); |
b45f64d1 JP |
3308 | if (err) |
3309 | goto err_neigh_init; | |
3310 | ||
3311 | mlxsw_sp->fib_nb.notifier_call = mlxsw_sp_router_fib_event; | |
c3852ef7 IS |
3312 | err = register_fib_notifier(&mlxsw_sp->fib_nb, |
3313 | mlxsw_sp_router_fib_dump_flush); | |
3314 | if (err) | |
3315 | goto err_register_fib_notifier; | |
3316 | ||
b45f64d1 JP |
3317 | return 0; |
3318 | ||
c3852ef7 IS |
3319 | err_register_fib_notifier: |
3320 | mlxsw_sp_neigh_fini(mlxsw_sp); | |
b45f64d1 JP |
3321 | err_neigh_init: |
3322 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
3323 | err_vrs_init: | |
e9ad5e7d IS |
3324 | rhashtable_destroy(&mlxsw_sp->router.nexthop_group_ht); |
3325 | err_nexthop_group_ht_init: | |
c53b8e1b IS |
3326 | rhashtable_destroy(&mlxsw_sp->router.nexthop_ht); |
3327 | err_nexthop_ht_init: | |
b45f64d1 JP |
3328 | __mlxsw_sp_router_fini(mlxsw_sp); |
3329 | return err; | |
3330 | } | |
3331 | ||
3332 | void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
3333 | { | |
3334 | unregister_fib_notifier(&mlxsw_sp->fib_nb); | |
3335 | mlxsw_sp_neigh_fini(mlxsw_sp); | |
3336 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
e9ad5e7d | 3337 | rhashtable_destroy(&mlxsw_sp->router.nexthop_group_ht); |
c53b8e1b | 3338 | rhashtable_destroy(&mlxsw_sp->router.nexthop_ht); |
b45f64d1 JP |
3339 | __mlxsw_sp_router_fini(mlxsw_sp); |
3340 | } |