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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> |
c723c735 | 44 | #include <net/netevent.h> |
6cf3c971 JP |
45 | #include <net/neighbour.h> |
46 | #include <net/arp.h> | |
b45f64d1 | 47 | #include <net/ip_fib.h> |
464dce18 IS |
48 | |
49 | #include "spectrum.h" | |
50 | #include "core.h" | |
51 | #include "reg.h" | |
52 | ||
4724ba56 IS |
53 | struct mlxsw_sp_rif { |
54 | struct list_head nexthop_list; | |
55 | struct list_head neigh_list; | |
56 | struct net_device *dev; | |
57 | struct mlxsw_sp_fid *f; | |
58 | unsigned char addr[ETH_ALEN]; | |
59 | int mtu; | |
60 | u16 rif; | |
61 | }; | |
62 | ||
63 | static struct mlxsw_sp_rif * | |
64 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
65 | const struct net_device *dev); | |
66 | ||
53342023 JP |
67 | #define mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) \ |
68 | for_each_set_bit(prefix, (prefix_usage)->b, MLXSW_SP_PREFIX_COUNT) | |
69 | ||
6b75c480 JP |
70 | static bool |
71 | mlxsw_sp_prefix_usage_subset(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
72 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
73 | { | |
74 | unsigned char prefix; | |
75 | ||
76 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage1) { | |
77 | if (!test_bit(prefix, prefix_usage2->b)) | |
78 | return false; | |
79 | } | |
80 | return true; | |
81 | } | |
82 | ||
53342023 JP |
83 | static bool |
84 | mlxsw_sp_prefix_usage_eq(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
85 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
86 | { | |
87 | return !memcmp(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
88 | } | |
89 | ||
6b75c480 JP |
90 | static bool |
91 | mlxsw_sp_prefix_usage_none(struct mlxsw_sp_prefix_usage *prefix_usage) | |
92 | { | |
93 | struct mlxsw_sp_prefix_usage prefix_usage_none = {{ 0 } }; | |
94 | ||
95 | return mlxsw_sp_prefix_usage_eq(prefix_usage, &prefix_usage_none); | |
96 | } | |
97 | ||
98 | static void | |
99 | mlxsw_sp_prefix_usage_cpy(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
100 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
101 | { | |
102 | memcpy(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
103 | } | |
104 | ||
5e9c16cc JP |
105 | static void |
106 | mlxsw_sp_prefix_usage_set(struct mlxsw_sp_prefix_usage *prefix_usage, | |
107 | unsigned char prefix_len) | |
108 | { | |
109 | set_bit(prefix_len, prefix_usage->b); | |
110 | } | |
111 | ||
112 | static void | |
113 | mlxsw_sp_prefix_usage_clear(struct mlxsw_sp_prefix_usage *prefix_usage, | |
114 | unsigned char prefix_len) | |
115 | { | |
116 | clear_bit(prefix_len, prefix_usage->b); | |
117 | } | |
118 | ||
119 | struct mlxsw_sp_fib_key { | |
120 | unsigned char addr[sizeof(struct in6_addr)]; | |
121 | unsigned char prefix_len; | |
122 | }; | |
123 | ||
61c503f9 JP |
124 | enum mlxsw_sp_fib_entry_type { |
125 | MLXSW_SP_FIB_ENTRY_TYPE_REMOTE, | |
126 | MLXSW_SP_FIB_ENTRY_TYPE_LOCAL, | |
127 | MLXSW_SP_FIB_ENTRY_TYPE_TRAP, | |
128 | }; | |
129 | ||
a7ff87ac JP |
130 | struct mlxsw_sp_nexthop_group; |
131 | ||
9aecce1c IS |
132 | struct mlxsw_sp_fib_node { |
133 | struct list_head entry_list; | |
b45f64d1 | 134 | struct list_head list; |
9aecce1c | 135 | struct rhash_head ht_node; |
76610ebb | 136 | struct mlxsw_sp_fib *fib; |
5e9c16cc | 137 | struct mlxsw_sp_fib_key key; |
9aecce1c IS |
138 | }; |
139 | ||
140 | struct mlxsw_sp_fib_entry_params { | |
141 | u32 tb_id; | |
142 | u32 prio; | |
143 | u8 tos; | |
144 | u8 type; | |
145 | }; | |
146 | ||
147 | struct mlxsw_sp_fib_entry { | |
148 | struct list_head list; | |
149 | struct mlxsw_sp_fib_node *fib_node; | |
61c503f9 | 150 | enum mlxsw_sp_fib_entry_type type; |
a7ff87ac JP |
151 | struct list_head nexthop_group_node; |
152 | struct mlxsw_sp_nexthop_group *nh_group; | |
9aecce1c | 153 | struct mlxsw_sp_fib_entry_params params; |
013b20f9 | 154 | bool offloaded; |
5e9c16cc JP |
155 | }; |
156 | ||
157 | struct mlxsw_sp_fib { | |
158 | struct rhashtable ht; | |
9aecce1c | 159 | struct list_head node_list; |
76610ebb IS |
160 | struct mlxsw_sp_vr *vr; |
161 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
5e9c16cc JP |
162 | unsigned long prefix_ref_count[MLXSW_SP_PREFIX_COUNT]; |
163 | struct mlxsw_sp_prefix_usage prefix_usage; | |
76610ebb | 164 | enum mlxsw_sp_l3proto proto; |
5e9c16cc JP |
165 | }; |
166 | ||
9aecce1c | 167 | static const struct rhashtable_params mlxsw_sp_fib_ht_params; |
5e9c16cc | 168 | |
76610ebb IS |
169 | static struct mlxsw_sp_fib *mlxsw_sp_fib_create(struct mlxsw_sp_vr *vr, |
170 | enum mlxsw_sp_l3proto proto) | |
5e9c16cc JP |
171 | { |
172 | struct mlxsw_sp_fib *fib; | |
173 | int err; | |
174 | ||
175 | fib = kzalloc(sizeof(*fib), GFP_KERNEL); | |
176 | if (!fib) | |
177 | return ERR_PTR(-ENOMEM); | |
178 | err = rhashtable_init(&fib->ht, &mlxsw_sp_fib_ht_params); | |
179 | if (err) | |
180 | goto err_rhashtable_init; | |
9aecce1c | 181 | INIT_LIST_HEAD(&fib->node_list); |
76610ebb IS |
182 | fib->proto = proto; |
183 | fib->vr = vr; | |
5e9c16cc JP |
184 | return fib; |
185 | ||
186 | err_rhashtable_init: | |
187 | kfree(fib); | |
188 | return ERR_PTR(err); | |
189 | } | |
190 | ||
191 | static void mlxsw_sp_fib_destroy(struct mlxsw_sp_fib *fib) | |
192 | { | |
9aecce1c | 193 | WARN_ON(!list_empty(&fib->node_list)); |
76610ebb | 194 | WARN_ON(fib->lpm_tree); |
5e9c16cc JP |
195 | rhashtable_destroy(&fib->ht); |
196 | kfree(fib); | |
197 | } | |
198 | ||
53342023 | 199 | static struct mlxsw_sp_lpm_tree * |
382dbb40 | 200 | mlxsw_sp_lpm_tree_find_unused(struct mlxsw_sp *mlxsw_sp) |
53342023 JP |
201 | { |
202 | static struct mlxsw_sp_lpm_tree *lpm_tree; | |
203 | int i; | |
204 | ||
205 | for (i = 0; i < MLXSW_SP_LPM_TREE_COUNT; i++) { | |
206 | lpm_tree = &mlxsw_sp->router.lpm_trees[i]; | |
382dbb40 IS |
207 | if (lpm_tree->ref_count == 0) |
208 | return lpm_tree; | |
53342023 JP |
209 | } |
210 | return NULL; | |
211 | } | |
212 | ||
213 | static int mlxsw_sp_lpm_tree_alloc(struct mlxsw_sp *mlxsw_sp, | |
214 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
215 | { | |
216 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
217 | ||
1a9234e6 IS |
218 | mlxsw_reg_ralta_pack(ralta_pl, true, |
219 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
220 | lpm_tree->id); | |
53342023 JP |
221 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
222 | } | |
223 | ||
224 | static int mlxsw_sp_lpm_tree_free(struct mlxsw_sp *mlxsw_sp, | |
225 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
226 | { | |
227 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
228 | ||
1a9234e6 IS |
229 | mlxsw_reg_ralta_pack(ralta_pl, false, |
230 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
231 | lpm_tree->id); | |
53342023 JP |
232 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
233 | } | |
234 | ||
235 | static int | |
236 | mlxsw_sp_lpm_tree_left_struct_set(struct mlxsw_sp *mlxsw_sp, | |
237 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
238 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
239 | { | |
240 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
241 | u8 root_bin = 0; | |
242 | u8 prefix; | |
243 | u8 last_prefix = MLXSW_REG_RALST_BIN_NO_CHILD; | |
244 | ||
245 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) | |
246 | root_bin = prefix; | |
247 | ||
248 | mlxsw_reg_ralst_pack(ralst_pl, root_bin, lpm_tree->id); | |
249 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) { | |
250 | if (prefix == 0) | |
251 | continue; | |
252 | mlxsw_reg_ralst_bin_pack(ralst_pl, prefix, last_prefix, | |
253 | MLXSW_REG_RALST_BIN_NO_CHILD); | |
254 | last_prefix = prefix; | |
255 | } | |
256 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); | |
257 | } | |
258 | ||
259 | static struct mlxsw_sp_lpm_tree * | |
260 | mlxsw_sp_lpm_tree_create(struct mlxsw_sp *mlxsw_sp, | |
261 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 262 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
263 | { |
264 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
265 | int err; | |
266 | ||
382dbb40 | 267 | lpm_tree = mlxsw_sp_lpm_tree_find_unused(mlxsw_sp); |
53342023 JP |
268 | if (!lpm_tree) |
269 | return ERR_PTR(-EBUSY); | |
270 | lpm_tree->proto = proto; | |
271 | err = mlxsw_sp_lpm_tree_alloc(mlxsw_sp, lpm_tree); | |
272 | if (err) | |
273 | return ERR_PTR(err); | |
274 | ||
275 | err = mlxsw_sp_lpm_tree_left_struct_set(mlxsw_sp, prefix_usage, | |
276 | lpm_tree); | |
277 | if (err) | |
278 | goto err_left_struct_set; | |
2083d367 JP |
279 | memcpy(&lpm_tree->prefix_usage, prefix_usage, |
280 | sizeof(lpm_tree->prefix_usage)); | |
53342023 JP |
281 | return lpm_tree; |
282 | ||
283 | err_left_struct_set: | |
284 | mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); | |
285 | return ERR_PTR(err); | |
286 | } | |
287 | ||
288 | static int mlxsw_sp_lpm_tree_destroy(struct mlxsw_sp *mlxsw_sp, | |
289 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
290 | { | |
291 | return mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); | |
292 | } | |
293 | ||
294 | static struct mlxsw_sp_lpm_tree * | |
295 | mlxsw_sp_lpm_tree_get(struct mlxsw_sp *mlxsw_sp, | |
296 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 297 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
298 | { |
299 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
300 | int i; | |
301 | ||
302 | for (i = 0; i < MLXSW_SP_LPM_TREE_COUNT; i++) { | |
303 | lpm_tree = &mlxsw_sp->router.lpm_trees[i]; | |
8b99becd JP |
304 | if (lpm_tree->ref_count != 0 && |
305 | lpm_tree->proto == proto && | |
53342023 JP |
306 | mlxsw_sp_prefix_usage_eq(&lpm_tree->prefix_usage, |
307 | prefix_usage)) | |
308 | goto inc_ref_count; | |
309 | } | |
310 | lpm_tree = mlxsw_sp_lpm_tree_create(mlxsw_sp, prefix_usage, | |
382dbb40 | 311 | proto); |
53342023 JP |
312 | if (IS_ERR(lpm_tree)) |
313 | return lpm_tree; | |
314 | ||
315 | inc_ref_count: | |
316 | lpm_tree->ref_count++; | |
317 | return lpm_tree; | |
318 | } | |
319 | ||
320 | static int mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp, | |
321 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
322 | { | |
323 | if (--lpm_tree->ref_count == 0) | |
324 | return mlxsw_sp_lpm_tree_destroy(mlxsw_sp, lpm_tree); | |
325 | return 0; | |
326 | } | |
327 | ||
328 | static void mlxsw_sp_lpm_init(struct mlxsw_sp *mlxsw_sp) | |
329 | { | |
330 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
331 | int i; | |
332 | ||
333 | for (i = 0; i < MLXSW_SP_LPM_TREE_COUNT; i++) { | |
334 | lpm_tree = &mlxsw_sp->router.lpm_trees[i]; | |
335 | lpm_tree->id = i + MLXSW_SP_LPM_TREE_MIN; | |
336 | } | |
337 | } | |
338 | ||
76610ebb IS |
339 | static bool mlxsw_sp_vr_is_used(const struct mlxsw_sp_vr *vr) |
340 | { | |
341 | return !!vr->fib4; | |
342 | } | |
343 | ||
6b75c480 JP |
344 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find_unused(struct mlxsw_sp *mlxsw_sp) |
345 | { | |
346 | struct mlxsw_sp_vr *vr; | |
347 | int i; | |
348 | ||
c1a38311 | 349 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
6b75c480 | 350 | vr = &mlxsw_sp->router.vrs[i]; |
76610ebb | 351 | if (!mlxsw_sp_vr_is_used(vr)) |
6b75c480 JP |
352 | return vr; |
353 | } | |
354 | return NULL; | |
355 | } | |
356 | ||
357 | static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 358 | const struct mlxsw_sp_fib *fib) |
6b75c480 JP |
359 | { |
360 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
361 | ||
76610ebb IS |
362 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
363 | (enum mlxsw_reg_ralxx_protocol) fib->proto, | |
364 | fib->lpm_tree->id); | |
6b75c480 JP |
365 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
366 | } | |
367 | ||
368 | static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 369 | const struct mlxsw_sp_fib *fib) |
6b75c480 JP |
370 | { |
371 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
372 | ||
373 | /* Bind to tree 0 which is default */ | |
76610ebb IS |
374 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
375 | (enum mlxsw_reg_ralxx_protocol) fib->proto, 0); | |
6b75c480 JP |
376 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
377 | } | |
378 | ||
379 | static u32 mlxsw_sp_fix_tb_id(u32 tb_id) | |
380 | { | |
381 | /* For our purpose, squash main and local table into one */ | |
382 | if (tb_id == RT_TABLE_LOCAL) | |
383 | tb_id = RT_TABLE_MAIN; | |
384 | return tb_id; | |
385 | } | |
386 | ||
387 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 388 | u32 tb_id) |
6b75c480 JP |
389 | { |
390 | struct mlxsw_sp_vr *vr; | |
391 | int i; | |
392 | ||
393 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
9497c042 | 394 | |
c1a38311 | 395 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
6b75c480 | 396 | vr = &mlxsw_sp->router.vrs[i]; |
76610ebb | 397 | if (mlxsw_sp_vr_is_used(vr) && vr->tb_id == tb_id) |
6b75c480 JP |
398 | return vr; |
399 | } | |
400 | return NULL; | |
401 | } | |
402 | ||
76610ebb IS |
403 | static struct mlxsw_sp_fib *mlxsw_sp_vr_fib(const struct mlxsw_sp_vr *vr, |
404 | enum mlxsw_sp_l3proto proto) | |
405 | { | |
406 | switch (proto) { | |
407 | case MLXSW_SP_L3_PROTO_IPV4: | |
408 | return vr->fib4; | |
409 | case MLXSW_SP_L3_PROTO_IPV6: | |
410 | BUG_ON(1); | |
411 | } | |
412 | return NULL; | |
413 | } | |
414 | ||
6b75c480 | 415 | static struct mlxsw_sp_vr *mlxsw_sp_vr_create(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 416 | u32 tb_id) |
6b75c480 | 417 | { |
6b75c480 | 418 | struct mlxsw_sp_vr *vr; |
6b75c480 JP |
419 | |
420 | vr = mlxsw_sp_vr_find_unused(mlxsw_sp); | |
421 | if (!vr) | |
422 | return ERR_PTR(-EBUSY); | |
76610ebb IS |
423 | vr->fib4 = mlxsw_sp_fib_create(vr, MLXSW_SP_L3_PROTO_IPV4); |
424 | if (IS_ERR(vr->fib4)) | |
425 | return ERR_CAST(vr->fib4); | |
6b75c480 | 426 | vr->tb_id = tb_id; |
6b75c480 | 427 | return vr; |
6b75c480 JP |
428 | } |
429 | ||
76610ebb | 430 | static void mlxsw_sp_vr_destroy(struct mlxsw_sp_vr *vr) |
6b75c480 | 431 | { |
76610ebb IS |
432 | mlxsw_sp_fib_destroy(vr->fib4); |
433 | vr->fib4 = NULL; | |
6b75c480 JP |
434 | } |
435 | ||
436 | static int | |
76610ebb | 437 | mlxsw_sp_vr_lpm_tree_check(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fib *fib, |
6b75c480 JP |
438 | struct mlxsw_sp_prefix_usage *req_prefix_usage) |
439 | { | |
76610ebb | 440 | struct mlxsw_sp_lpm_tree *lpm_tree = fib->lpm_tree; |
f7df4923 IS |
441 | struct mlxsw_sp_lpm_tree *new_tree; |
442 | int err; | |
6b75c480 | 443 | |
f7df4923 | 444 | if (mlxsw_sp_prefix_usage_eq(req_prefix_usage, &lpm_tree->prefix_usage)) |
6b75c480 JP |
445 | return 0; |
446 | ||
f7df4923 | 447 | new_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, req_prefix_usage, |
76610ebb | 448 | fib->proto); |
f7df4923 | 449 | if (IS_ERR(new_tree)) { |
6b75c480 JP |
450 | /* We failed to get a tree according to the required |
451 | * prefix usage. However, the current tree might be still good | |
452 | * for us if our requirement is subset of the prefixes used | |
453 | * in the tree. | |
454 | */ | |
455 | if (mlxsw_sp_prefix_usage_subset(req_prefix_usage, | |
f7df4923 | 456 | &lpm_tree->prefix_usage)) |
6b75c480 | 457 | return 0; |
f7df4923 | 458 | return PTR_ERR(new_tree); |
6b75c480 JP |
459 | } |
460 | ||
f7df4923 | 461 | /* Prevent packet loss by overwriting existing binding */ |
76610ebb IS |
462 | fib->lpm_tree = new_tree; |
463 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib); | |
f7df4923 IS |
464 | if (err) |
465 | goto err_tree_bind; | |
466 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
467 | ||
468 | return 0; | |
469 | ||
470 | err_tree_bind: | |
76610ebb | 471 | fib->lpm_tree = lpm_tree; |
f7df4923 IS |
472 | mlxsw_sp_lpm_tree_put(mlxsw_sp, new_tree); |
473 | return err; | |
6b75c480 JP |
474 | } |
475 | ||
76610ebb | 476 | static struct mlxsw_sp_vr *mlxsw_sp_vr_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id) |
6b75c480 JP |
477 | { |
478 | struct mlxsw_sp_vr *vr; | |
6b75c480 JP |
479 | |
480 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
76610ebb IS |
481 | vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id); |
482 | if (!vr) | |
483 | vr = mlxsw_sp_vr_create(mlxsw_sp, tb_id); | |
6b75c480 JP |
484 | return vr; |
485 | } | |
486 | ||
76610ebb | 487 | static void mlxsw_sp_vr_put(struct mlxsw_sp_vr *vr) |
6b75c480 | 488 | { |
76610ebb IS |
489 | if (list_empty(&vr->fib4->node_list)) |
490 | mlxsw_sp_vr_destroy(vr); | |
6b75c480 JP |
491 | } |
492 | ||
9497c042 | 493 | static int mlxsw_sp_vrs_init(struct mlxsw_sp *mlxsw_sp) |
6b75c480 JP |
494 | { |
495 | struct mlxsw_sp_vr *vr; | |
c1a38311 | 496 | u64 max_vrs; |
6b75c480 JP |
497 | int i; |
498 | ||
c1a38311 | 499 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_VRS)) |
9497c042 NF |
500 | return -EIO; |
501 | ||
c1a38311 JP |
502 | max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); |
503 | mlxsw_sp->router.vrs = kcalloc(max_vrs, sizeof(struct mlxsw_sp_vr), | |
9497c042 NF |
504 | GFP_KERNEL); |
505 | if (!mlxsw_sp->router.vrs) | |
506 | return -ENOMEM; | |
507 | ||
c1a38311 | 508 | for (i = 0; i < max_vrs; i++) { |
6b75c480 JP |
509 | vr = &mlxsw_sp->router.vrs[i]; |
510 | vr->id = i; | |
511 | } | |
9497c042 NF |
512 | |
513 | return 0; | |
514 | } | |
515 | ||
ac571de9 IS |
516 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp); |
517 | ||
9497c042 NF |
518 | static void mlxsw_sp_vrs_fini(struct mlxsw_sp *mlxsw_sp) |
519 | { | |
3057224e IS |
520 | /* At this stage we're guaranteed not to have new incoming |
521 | * FIB notifications and the work queue is free from FIBs | |
522 | * sitting on top of mlxsw netdevs. However, we can still | |
523 | * have other FIBs queued. Flush the queue before flushing | |
524 | * the device's tables. No need for locks, as we're the only | |
525 | * writer. | |
526 | */ | |
527 | mlxsw_core_flush_owq(); | |
ac571de9 | 528 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
9497c042 | 529 | kfree(mlxsw_sp->router.vrs); |
6b75c480 JP |
530 | } |
531 | ||
6cf3c971 | 532 | struct mlxsw_sp_neigh_key { |
33b1341c | 533 | struct neighbour *n; |
6cf3c971 JP |
534 | }; |
535 | ||
536 | struct mlxsw_sp_neigh_entry { | |
9665b745 | 537 | struct list_head rif_list_node; |
6cf3c971 JP |
538 | struct rhash_head ht_node; |
539 | struct mlxsw_sp_neigh_key key; | |
540 | u16 rif; | |
5c8802f1 | 541 | bool connected; |
a6bf9e93 | 542 | unsigned char ha[ETH_ALEN]; |
a7ff87ac JP |
543 | struct list_head nexthop_list; /* list of nexthops using |
544 | * this neigh entry | |
545 | */ | |
b2157149 | 546 | struct list_head nexthop_neighs_list_node; |
6cf3c971 JP |
547 | }; |
548 | ||
549 | static const struct rhashtable_params mlxsw_sp_neigh_ht_params = { | |
550 | .key_offset = offsetof(struct mlxsw_sp_neigh_entry, key), | |
551 | .head_offset = offsetof(struct mlxsw_sp_neigh_entry, ht_node), | |
552 | .key_len = sizeof(struct mlxsw_sp_neigh_key), | |
553 | }; | |
554 | ||
6cf3c971 | 555 | static struct mlxsw_sp_neigh_entry * |
5c8802f1 IS |
556 | mlxsw_sp_neigh_entry_alloc(struct mlxsw_sp *mlxsw_sp, struct neighbour *n, |
557 | u16 rif) | |
6cf3c971 JP |
558 | { |
559 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
560 | ||
5c8802f1 | 561 | neigh_entry = kzalloc(sizeof(*neigh_entry), GFP_KERNEL); |
6cf3c971 JP |
562 | if (!neigh_entry) |
563 | return NULL; | |
5c8802f1 | 564 | |
33b1341c | 565 | neigh_entry->key.n = n; |
6cf3c971 | 566 | neigh_entry->rif = rif; |
a7ff87ac | 567 | INIT_LIST_HEAD(&neigh_entry->nexthop_list); |
5c8802f1 | 568 | |
6cf3c971 JP |
569 | return neigh_entry; |
570 | } | |
571 | ||
5c8802f1 | 572 | static void mlxsw_sp_neigh_entry_free(struct mlxsw_sp_neigh_entry *neigh_entry) |
6cf3c971 JP |
573 | { |
574 | kfree(neigh_entry); | |
575 | } | |
576 | ||
5c8802f1 IS |
577 | static int |
578 | mlxsw_sp_neigh_entry_insert(struct mlxsw_sp *mlxsw_sp, | |
579 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 580 | { |
5c8802f1 IS |
581 | return rhashtable_insert_fast(&mlxsw_sp->router.neigh_ht, |
582 | &neigh_entry->ht_node, | |
583 | mlxsw_sp_neigh_ht_params); | |
584 | } | |
6cf3c971 | 585 | |
5c8802f1 IS |
586 | static void |
587 | mlxsw_sp_neigh_entry_remove(struct mlxsw_sp *mlxsw_sp, | |
588 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
589 | { | |
590 | rhashtable_remove_fast(&mlxsw_sp->router.neigh_ht, | |
591 | &neigh_entry->ht_node, | |
592 | mlxsw_sp_neigh_ht_params); | |
6cf3c971 JP |
593 | } |
594 | ||
5c8802f1 IS |
595 | static struct mlxsw_sp_neigh_entry * |
596 | mlxsw_sp_neigh_entry_create(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
6cf3c971 | 597 | { |
6cf3c971 JP |
598 | struct mlxsw_sp_neigh_entry *neigh_entry; |
599 | struct mlxsw_sp_rif *r; | |
6cf3c971 JP |
600 | int err; |
601 | ||
51af96b5 | 602 | r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, n->dev); |
5c8802f1 IS |
603 | if (!r) |
604 | return ERR_PTR(-EINVAL); | |
6cf3c971 | 605 | |
5c8802f1 | 606 | neigh_entry = mlxsw_sp_neigh_entry_alloc(mlxsw_sp, n, r->rif); |
6cf3c971 | 607 | if (!neigh_entry) |
5c8802f1 IS |
608 | return ERR_PTR(-ENOMEM); |
609 | ||
6cf3c971 JP |
610 | err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry); |
611 | if (err) | |
612 | goto err_neigh_entry_insert; | |
5c8802f1 | 613 | |
9665b745 IS |
614 | list_add(&neigh_entry->rif_list_node, &r->neigh_list); |
615 | ||
5c8802f1 | 616 | return neigh_entry; |
6cf3c971 JP |
617 | |
618 | err_neigh_entry_insert: | |
5c8802f1 IS |
619 | mlxsw_sp_neigh_entry_free(neigh_entry); |
620 | return ERR_PTR(err); | |
6cf3c971 JP |
621 | } |
622 | ||
5c8802f1 IS |
623 | static void |
624 | mlxsw_sp_neigh_entry_destroy(struct mlxsw_sp *mlxsw_sp, | |
625 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 626 | { |
9665b745 | 627 | list_del(&neigh_entry->rif_list_node); |
5c8802f1 IS |
628 | mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry); |
629 | mlxsw_sp_neigh_entry_free(neigh_entry); | |
630 | } | |
6cf3c971 | 631 | |
5c8802f1 IS |
632 | static struct mlxsw_sp_neigh_entry * |
633 | mlxsw_sp_neigh_entry_lookup(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
634 | { | |
635 | struct mlxsw_sp_neigh_key key; | |
6cf3c971 | 636 | |
5c8802f1 IS |
637 | key.n = n; |
638 | return rhashtable_lookup_fast(&mlxsw_sp->router.neigh_ht, | |
639 | &key, mlxsw_sp_neigh_ht_params); | |
6cf3c971 JP |
640 | } |
641 | ||
c723c735 YG |
642 | static void |
643 | mlxsw_sp_router_neighs_update_interval_init(struct mlxsw_sp *mlxsw_sp) | |
644 | { | |
645 | unsigned long interval = NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME); | |
646 | ||
647 | mlxsw_sp->router.neighs_update.interval = jiffies_to_msecs(interval); | |
648 | } | |
649 | ||
650 | static void mlxsw_sp_router_neigh_ent_ipv4_process(struct mlxsw_sp *mlxsw_sp, | |
651 | char *rauhtd_pl, | |
652 | int ent_index) | |
653 | { | |
654 | struct net_device *dev; | |
655 | struct neighbour *n; | |
656 | __be32 dipn; | |
657 | u32 dip; | |
658 | u16 rif; | |
659 | ||
660 | mlxsw_reg_rauhtd_ent_ipv4_unpack(rauhtd_pl, ent_index, &rif, &dip); | |
661 | ||
662 | if (!mlxsw_sp->rifs[rif]) { | |
663 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n"); | |
664 | return; | |
665 | } | |
666 | ||
667 | dipn = htonl(dip); | |
668 | dev = mlxsw_sp->rifs[rif]->dev; | |
669 | n = neigh_lookup(&arp_tbl, &dipn, dev); | |
670 | if (!n) { | |
671 | netdev_err(dev, "Failed to find matching neighbour for IP=%pI4h\n", | |
672 | &dip); | |
673 | return; | |
674 | } | |
675 | ||
676 | netdev_dbg(dev, "Updating neighbour with IP=%pI4h\n", &dip); | |
677 | neigh_event_send(n, NULL); | |
678 | neigh_release(n); | |
679 | } | |
680 | ||
681 | static void mlxsw_sp_router_neigh_rec_ipv4_process(struct mlxsw_sp *mlxsw_sp, | |
682 | char *rauhtd_pl, | |
683 | int rec_index) | |
684 | { | |
685 | u8 num_entries; | |
686 | int i; | |
687 | ||
688 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
689 | rec_index); | |
690 | /* Hardware starts counting at 0, so add 1. */ | |
691 | num_entries++; | |
692 | ||
693 | /* Each record consists of several neighbour entries. */ | |
694 | for (i = 0; i < num_entries; i++) { | |
695 | int ent_index; | |
696 | ||
697 | ent_index = rec_index * MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC + i; | |
698 | mlxsw_sp_router_neigh_ent_ipv4_process(mlxsw_sp, rauhtd_pl, | |
699 | ent_index); | |
700 | } | |
701 | ||
702 | } | |
703 | ||
704 | static void mlxsw_sp_router_neigh_rec_process(struct mlxsw_sp *mlxsw_sp, | |
705 | char *rauhtd_pl, int rec_index) | |
706 | { | |
707 | switch (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, rec_index)) { | |
708 | case MLXSW_REG_RAUHTD_TYPE_IPV4: | |
709 | mlxsw_sp_router_neigh_rec_ipv4_process(mlxsw_sp, rauhtd_pl, | |
710 | rec_index); | |
711 | break; | |
712 | case MLXSW_REG_RAUHTD_TYPE_IPV6: | |
713 | WARN_ON_ONCE(1); | |
714 | break; | |
715 | } | |
716 | } | |
717 | ||
42cdb338 AS |
718 | static bool mlxsw_sp_router_rauhtd_is_full(char *rauhtd_pl) |
719 | { | |
720 | u8 num_rec, last_rec_index, num_entries; | |
721 | ||
722 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
723 | last_rec_index = num_rec - 1; | |
724 | ||
725 | if (num_rec < MLXSW_REG_RAUHTD_REC_MAX_NUM) | |
726 | return false; | |
727 | if (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, last_rec_index) == | |
728 | MLXSW_REG_RAUHTD_TYPE_IPV6) | |
729 | return true; | |
730 | ||
731 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
732 | last_rec_index); | |
733 | if (++num_entries == MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC) | |
734 | return true; | |
735 | return false; | |
736 | } | |
737 | ||
b2157149 | 738 | static int mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp) |
c723c735 | 739 | { |
c723c735 YG |
740 | char *rauhtd_pl; |
741 | u8 num_rec; | |
742 | int i, err; | |
743 | ||
744 | rauhtd_pl = kmalloc(MLXSW_REG_RAUHTD_LEN, GFP_KERNEL); | |
745 | if (!rauhtd_pl) | |
b2157149 | 746 | return -ENOMEM; |
c723c735 YG |
747 | |
748 | /* Make sure the neighbour's netdev isn't removed in the | |
749 | * process. | |
750 | */ | |
751 | rtnl_lock(); | |
752 | do { | |
753 | mlxsw_reg_rauhtd_pack(rauhtd_pl, MLXSW_REG_RAUHTD_TYPE_IPV4); | |
754 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(rauhtd), | |
755 | rauhtd_pl); | |
756 | if (err) { | |
757 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to dump neighbour talbe\n"); | |
758 | break; | |
759 | } | |
760 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
761 | for (i = 0; i < num_rec; i++) | |
762 | mlxsw_sp_router_neigh_rec_process(mlxsw_sp, rauhtd_pl, | |
763 | i); | |
42cdb338 | 764 | } while (mlxsw_sp_router_rauhtd_is_full(rauhtd_pl)); |
c723c735 YG |
765 | rtnl_unlock(); |
766 | ||
767 | kfree(rauhtd_pl); | |
b2157149 YG |
768 | return err; |
769 | } | |
770 | ||
771 | static void mlxsw_sp_router_neighs_update_nh(struct mlxsw_sp *mlxsw_sp) | |
772 | { | |
773 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
774 | ||
775 | /* Take RTNL mutex here to prevent lists from changes */ | |
776 | rtnl_lock(); | |
777 | list_for_each_entry(neigh_entry, &mlxsw_sp->router.nexthop_neighs_list, | |
8a0b7275 | 778 | nexthop_neighs_list_node) |
b2157149 YG |
779 | /* If this neigh have nexthops, make the kernel think this neigh |
780 | * is active regardless of the traffic. | |
781 | */ | |
8a0b7275 | 782 | neigh_event_send(neigh_entry->key.n, NULL); |
b2157149 YG |
783 | rtnl_unlock(); |
784 | } | |
785 | ||
786 | static void | |
787 | mlxsw_sp_router_neighs_update_work_schedule(struct mlxsw_sp *mlxsw_sp) | |
788 | { | |
789 | unsigned long interval = mlxsw_sp->router.neighs_update.interval; | |
790 | ||
791 | mlxsw_core_schedule_dw(&mlxsw_sp->router.neighs_update.dw, | |
792 | msecs_to_jiffies(interval)); | |
793 | } | |
794 | ||
795 | static void mlxsw_sp_router_neighs_update_work(struct work_struct *work) | |
796 | { | |
797 | struct mlxsw_sp *mlxsw_sp = container_of(work, struct mlxsw_sp, | |
798 | router.neighs_update.dw.work); | |
799 | int err; | |
800 | ||
801 | err = mlxsw_sp_router_neighs_update_rauhtd(mlxsw_sp); | |
802 | if (err) | |
803 | dev_err(mlxsw_sp->bus_info->dev, "Could not update kernel for neigh activity"); | |
804 | ||
805 | mlxsw_sp_router_neighs_update_nh(mlxsw_sp); | |
806 | ||
c723c735 YG |
807 | mlxsw_sp_router_neighs_update_work_schedule(mlxsw_sp); |
808 | } | |
809 | ||
0b2361d9 YG |
810 | static void mlxsw_sp_router_probe_unresolved_nexthops(struct work_struct *work) |
811 | { | |
812 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
813 | struct mlxsw_sp *mlxsw_sp = container_of(work, struct mlxsw_sp, | |
814 | router.nexthop_probe_dw.work); | |
815 | ||
816 | /* Iterate over nexthop neighbours, find those who are unresolved and | |
817 | * send arp on them. This solves the chicken-egg problem when | |
818 | * the nexthop wouldn't get offloaded until the neighbor is resolved | |
819 | * but it wouldn't get resolved ever in case traffic is flowing in HW | |
820 | * using different nexthop. | |
821 | * | |
822 | * Take RTNL mutex here to prevent lists from changes. | |
823 | */ | |
824 | rtnl_lock(); | |
825 | list_for_each_entry(neigh_entry, &mlxsw_sp->router.nexthop_neighs_list, | |
8a0b7275 | 826 | nexthop_neighs_list_node) |
01b1aa35 | 827 | if (!neigh_entry->connected) |
33b1341c | 828 | neigh_event_send(neigh_entry->key.n, NULL); |
0b2361d9 YG |
829 | rtnl_unlock(); |
830 | ||
831 | mlxsw_core_schedule_dw(&mlxsw_sp->router.nexthop_probe_dw, | |
832 | MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL); | |
833 | } | |
834 | ||
a7ff87ac JP |
835 | static void |
836 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
837 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
838 | bool removing); | |
839 | ||
5c8802f1 IS |
840 | static enum mlxsw_reg_rauht_op mlxsw_sp_rauht_op(bool adding) |
841 | { | |
842 | return adding ? MLXSW_REG_RAUHT_OP_WRITE_ADD : | |
843 | MLXSW_REG_RAUHT_OP_WRITE_DELETE; | |
844 | } | |
845 | ||
846 | static void | |
847 | mlxsw_sp_router_neigh_entry_op4(struct mlxsw_sp *mlxsw_sp, | |
848 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
849 | enum mlxsw_reg_rauht_op op) | |
a6bf9e93 | 850 | { |
33b1341c | 851 | struct neighbour *n = neigh_entry->key.n; |
5c8802f1 | 852 | u32 dip = ntohl(*((__be32 *) n->primary_key)); |
a6bf9e93 | 853 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; |
5c8802f1 IS |
854 | |
855 | mlxsw_reg_rauht_pack4(rauht_pl, op, neigh_entry->rif, neigh_entry->ha, | |
856 | dip); | |
857 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); | |
858 | } | |
859 | ||
860 | static void | |
861 | mlxsw_sp_neigh_entry_update(struct mlxsw_sp *mlxsw_sp, | |
862 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
863 | bool adding) | |
864 | { | |
865 | if (!adding && !neigh_entry->connected) | |
866 | return; | |
867 | neigh_entry->connected = adding; | |
868 | if (neigh_entry->key.n->tbl == &arp_tbl) | |
869 | mlxsw_sp_router_neigh_entry_op4(mlxsw_sp, neigh_entry, | |
870 | mlxsw_sp_rauht_op(adding)); | |
871 | else | |
872 | WARN_ON_ONCE(1); | |
873 | } | |
874 | ||
875 | struct mlxsw_sp_neigh_event_work { | |
876 | struct work_struct work; | |
877 | struct mlxsw_sp *mlxsw_sp; | |
878 | struct neighbour *n; | |
879 | }; | |
880 | ||
881 | static void mlxsw_sp_router_neigh_event_work(struct work_struct *work) | |
882 | { | |
883 | struct mlxsw_sp_neigh_event_work *neigh_work = | |
884 | container_of(work, struct mlxsw_sp_neigh_event_work, work); | |
885 | struct mlxsw_sp *mlxsw_sp = neigh_work->mlxsw_sp; | |
886 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
887 | struct neighbour *n = neigh_work->n; | |
888 | unsigned char ha[ETH_ALEN]; | |
a6bf9e93 | 889 | bool entry_connected; |
93a87e5e | 890 | u8 nud_state, dead; |
a6bf9e93 | 891 | |
5c8802f1 IS |
892 | /* If these parameters are changed after we release the lock, |
893 | * then we are guaranteed to receive another event letting us | |
894 | * know about it. | |
895 | */ | |
a6bf9e93 | 896 | read_lock_bh(&n->lock); |
5c8802f1 | 897 | memcpy(ha, n->ha, ETH_ALEN); |
a6bf9e93 | 898 | nud_state = n->nud_state; |
93a87e5e | 899 | dead = n->dead; |
a6bf9e93 YG |
900 | read_unlock_bh(&n->lock); |
901 | ||
5c8802f1 | 902 | rtnl_lock(); |
93a87e5e | 903 | entry_connected = nud_state & NUD_VALID && !dead; |
5c8802f1 IS |
904 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); |
905 | if (!entry_connected && !neigh_entry) | |
906 | goto out; | |
907 | if (!neigh_entry) { | |
908 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); | |
909 | if (IS_ERR(neigh_entry)) | |
910 | goto out; | |
a6bf9e93 YG |
911 | } |
912 | ||
5c8802f1 IS |
913 | memcpy(neigh_entry->ha, ha, ETH_ALEN); |
914 | mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, entry_connected); | |
915 | mlxsw_sp_nexthop_neigh_update(mlxsw_sp, neigh_entry, !entry_connected); | |
916 | ||
917 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) | |
918 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
919 | ||
920 | out: | |
921 | rtnl_unlock(); | |
a6bf9e93 | 922 | neigh_release(n); |
5c8802f1 | 923 | kfree(neigh_work); |
a6bf9e93 YG |
924 | } |
925 | ||
e7322638 JP |
926 | int mlxsw_sp_router_netevent_event(struct notifier_block *unused, |
927 | unsigned long event, void *ptr) | |
c723c735 | 928 | { |
5c8802f1 | 929 | struct mlxsw_sp_neigh_event_work *neigh_work; |
c723c735 YG |
930 | struct mlxsw_sp_port *mlxsw_sp_port; |
931 | struct mlxsw_sp *mlxsw_sp; | |
932 | unsigned long interval; | |
933 | struct neigh_parms *p; | |
a6bf9e93 | 934 | struct neighbour *n; |
c723c735 YG |
935 | |
936 | switch (event) { | |
937 | case NETEVENT_DELAY_PROBE_TIME_UPDATE: | |
938 | p = ptr; | |
939 | ||
940 | /* We don't care about changes in the default table. */ | |
941 | if (!p->dev || p->tbl != &arp_tbl) | |
942 | return NOTIFY_DONE; | |
943 | ||
944 | /* We are in atomic context and can't take RTNL mutex, | |
945 | * so use RCU variant to walk the device chain. | |
946 | */ | |
947 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(p->dev); | |
948 | if (!mlxsw_sp_port) | |
949 | return NOTIFY_DONE; | |
950 | ||
951 | mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
952 | interval = jiffies_to_msecs(NEIGH_VAR(p, DELAY_PROBE_TIME)); | |
953 | mlxsw_sp->router.neighs_update.interval = interval; | |
954 | ||
955 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
956 | break; | |
a6bf9e93 YG |
957 | case NETEVENT_NEIGH_UPDATE: |
958 | n = ptr; | |
a6bf9e93 YG |
959 | |
960 | if (n->tbl != &arp_tbl) | |
961 | return NOTIFY_DONE; | |
962 | ||
5c8802f1 | 963 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(n->dev); |
a6bf9e93 YG |
964 | if (!mlxsw_sp_port) |
965 | return NOTIFY_DONE; | |
966 | ||
5c8802f1 IS |
967 | neigh_work = kzalloc(sizeof(*neigh_work), GFP_ATOMIC); |
968 | if (!neigh_work) { | |
a6bf9e93 | 969 | mlxsw_sp_port_dev_put(mlxsw_sp_port); |
5c8802f1 | 970 | return NOTIFY_BAD; |
a6bf9e93 | 971 | } |
5c8802f1 IS |
972 | |
973 | INIT_WORK(&neigh_work->work, mlxsw_sp_router_neigh_event_work); | |
974 | neigh_work->mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
975 | neigh_work->n = n; | |
a6bf9e93 YG |
976 | |
977 | /* Take a reference to ensure the neighbour won't be | |
978 | * destructed until we drop the reference in delayed | |
979 | * work. | |
980 | */ | |
981 | neigh_clone(n); | |
5c8802f1 IS |
982 | mlxsw_core_schedule_work(&neigh_work->work); |
983 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
a6bf9e93 | 984 | break; |
c723c735 YG |
985 | } |
986 | ||
987 | return NOTIFY_DONE; | |
988 | } | |
989 | ||
6cf3c971 JP |
990 | static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp) |
991 | { | |
c723c735 YG |
992 | int err; |
993 | ||
994 | err = rhashtable_init(&mlxsw_sp->router.neigh_ht, | |
995 | &mlxsw_sp_neigh_ht_params); | |
996 | if (err) | |
997 | return err; | |
998 | ||
999 | /* Initialize the polling interval according to the default | |
1000 | * table. | |
1001 | */ | |
1002 | mlxsw_sp_router_neighs_update_interval_init(mlxsw_sp); | |
1003 | ||
0b2361d9 | 1004 | /* Create the delayed works for the activity_update */ |
c723c735 YG |
1005 | INIT_DELAYED_WORK(&mlxsw_sp->router.neighs_update.dw, |
1006 | mlxsw_sp_router_neighs_update_work); | |
0b2361d9 YG |
1007 | INIT_DELAYED_WORK(&mlxsw_sp->router.nexthop_probe_dw, |
1008 | mlxsw_sp_router_probe_unresolved_nexthops); | |
c723c735 | 1009 | mlxsw_core_schedule_dw(&mlxsw_sp->router.neighs_update.dw, 0); |
0b2361d9 | 1010 | mlxsw_core_schedule_dw(&mlxsw_sp->router.nexthop_probe_dw, 0); |
c723c735 | 1011 | return 0; |
6cf3c971 JP |
1012 | } |
1013 | ||
1014 | static void mlxsw_sp_neigh_fini(struct mlxsw_sp *mlxsw_sp) | |
1015 | { | |
c723c735 | 1016 | cancel_delayed_work_sync(&mlxsw_sp->router.neighs_update.dw); |
0b2361d9 | 1017 | cancel_delayed_work_sync(&mlxsw_sp->router.nexthop_probe_dw); |
6cf3c971 JP |
1018 | rhashtable_destroy(&mlxsw_sp->router.neigh_ht); |
1019 | } | |
1020 | ||
9665b745 IS |
1021 | static int mlxsw_sp_neigh_rif_flush(struct mlxsw_sp *mlxsw_sp, |
1022 | const struct mlxsw_sp_rif *r) | |
1023 | { | |
1024 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; | |
1025 | ||
1026 | mlxsw_reg_rauht_pack(rauht_pl, MLXSW_REG_RAUHT_OP_WRITE_DELETE_ALL, | |
1027 | r->rif, r->addr); | |
1028 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); | |
1029 | } | |
1030 | ||
1031 | static void mlxsw_sp_neigh_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
1032 | struct mlxsw_sp_rif *r) | |
1033 | { | |
1034 | struct mlxsw_sp_neigh_entry *neigh_entry, *tmp; | |
1035 | ||
1036 | mlxsw_sp_neigh_rif_flush(mlxsw_sp, r); | |
1037 | list_for_each_entry_safe(neigh_entry, tmp, &r->neigh_list, | |
1038 | rif_list_node) | |
1039 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1040 | } | |
1041 | ||
c53b8e1b IS |
1042 | struct mlxsw_sp_nexthop_key { |
1043 | struct fib_nh *fib_nh; | |
1044 | }; | |
1045 | ||
a7ff87ac JP |
1046 | struct mlxsw_sp_nexthop { |
1047 | struct list_head neigh_list_node; /* member of neigh entry list */ | |
9665b745 | 1048 | struct list_head rif_list_node; |
a7ff87ac JP |
1049 | struct mlxsw_sp_nexthop_group *nh_grp; /* pointer back to the group |
1050 | * this belongs to | |
1051 | */ | |
c53b8e1b IS |
1052 | struct rhash_head ht_node; |
1053 | struct mlxsw_sp_nexthop_key key; | |
b8399a1e | 1054 | struct mlxsw_sp_rif *r; |
a7ff87ac JP |
1055 | u8 should_offload:1, /* set indicates this neigh is connected and |
1056 | * should be put to KVD linear area of this group. | |
1057 | */ | |
1058 | offloaded:1, /* set in case the neigh is actually put into | |
1059 | * KVD linear area of this group. | |
1060 | */ | |
1061 | update:1; /* set indicates that MAC of this neigh should be | |
1062 | * updated in HW | |
1063 | */ | |
1064 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1065 | }; | |
1066 | ||
e9ad5e7d IS |
1067 | struct mlxsw_sp_nexthop_group_key { |
1068 | struct fib_info *fi; | |
1069 | }; | |
1070 | ||
a7ff87ac | 1071 | struct mlxsw_sp_nexthop_group { |
e9ad5e7d | 1072 | struct rhash_head ht_node; |
a7ff87ac | 1073 | struct list_head fib_list; /* list of fib entries that use this group */ |
e9ad5e7d | 1074 | struct mlxsw_sp_nexthop_group_key key; |
b3e8d1eb IS |
1075 | u8 adj_index_valid:1, |
1076 | gateway:1; /* routes using the group use a gateway */ | |
a7ff87ac JP |
1077 | u32 adj_index; |
1078 | u16 ecmp_size; | |
1079 | u16 count; | |
1080 | struct mlxsw_sp_nexthop nexthops[0]; | |
b8399a1e | 1081 | #define nh_rif nexthops[0].r |
a7ff87ac JP |
1082 | }; |
1083 | ||
e9ad5e7d IS |
1084 | static const struct rhashtable_params mlxsw_sp_nexthop_group_ht_params = { |
1085 | .key_offset = offsetof(struct mlxsw_sp_nexthop_group, key), | |
1086 | .head_offset = offsetof(struct mlxsw_sp_nexthop_group, ht_node), | |
1087 | .key_len = sizeof(struct mlxsw_sp_nexthop_group_key), | |
1088 | }; | |
1089 | ||
1090 | static int mlxsw_sp_nexthop_group_insert(struct mlxsw_sp *mlxsw_sp, | |
1091 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1092 | { | |
1093 | return rhashtable_insert_fast(&mlxsw_sp->router.nexthop_group_ht, | |
1094 | &nh_grp->ht_node, | |
1095 | mlxsw_sp_nexthop_group_ht_params); | |
1096 | } | |
1097 | ||
1098 | static void mlxsw_sp_nexthop_group_remove(struct mlxsw_sp *mlxsw_sp, | |
1099 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1100 | { | |
1101 | rhashtable_remove_fast(&mlxsw_sp->router.nexthop_group_ht, | |
1102 | &nh_grp->ht_node, | |
1103 | mlxsw_sp_nexthop_group_ht_params); | |
1104 | } | |
1105 | ||
1106 | static struct mlxsw_sp_nexthop_group * | |
1107 | mlxsw_sp_nexthop_group_lookup(struct mlxsw_sp *mlxsw_sp, | |
1108 | struct mlxsw_sp_nexthop_group_key key) | |
1109 | { | |
1110 | return rhashtable_lookup_fast(&mlxsw_sp->router.nexthop_group_ht, &key, | |
1111 | mlxsw_sp_nexthop_group_ht_params); | |
1112 | } | |
1113 | ||
c53b8e1b IS |
1114 | static const struct rhashtable_params mlxsw_sp_nexthop_ht_params = { |
1115 | .key_offset = offsetof(struct mlxsw_sp_nexthop, key), | |
1116 | .head_offset = offsetof(struct mlxsw_sp_nexthop, ht_node), | |
1117 | .key_len = sizeof(struct mlxsw_sp_nexthop_key), | |
1118 | }; | |
1119 | ||
1120 | static int mlxsw_sp_nexthop_insert(struct mlxsw_sp *mlxsw_sp, | |
1121 | struct mlxsw_sp_nexthop *nh) | |
1122 | { | |
1123 | return rhashtable_insert_fast(&mlxsw_sp->router.nexthop_ht, | |
1124 | &nh->ht_node, mlxsw_sp_nexthop_ht_params); | |
1125 | } | |
1126 | ||
1127 | static void mlxsw_sp_nexthop_remove(struct mlxsw_sp *mlxsw_sp, | |
1128 | struct mlxsw_sp_nexthop *nh) | |
1129 | { | |
1130 | rhashtable_remove_fast(&mlxsw_sp->router.nexthop_ht, &nh->ht_node, | |
1131 | mlxsw_sp_nexthop_ht_params); | |
1132 | } | |
1133 | ||
ad178c8e IS |
1134 | static struct mlxsw_sp_nexthop * |
1135 | mlxsw_sp_nexthop_lookup(struct mlxsw_sp *mlxsw_sp, | |
1136 | struct mlxsw_sp_nexthop_key key) | |
1137 | { | |
1138 | return rhashtable_lookup_fast(&mlxsw_sp->router.nexthop_ht, &key, | |
1139 | mlxsw_sp_nexthop_ht_params); | |
1140 | } | |
1141 | ||
a7ff87ac | 1142 | static int mlxsw_sp_adj_index_mass_update_vr(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 1143 | const struct mlxsw_sp_fib *fib, |
a7ff87ac JP |
1144 | u32 adj_index, u16 ecmp_size, |
1145 | u32 new_adj_index, | |
1146 | u16 new_ecmp_size) | |
1147 | { | |
1148 | char raleu_pl[MLXSW_REG_RALEU_LEN]; | |
1149 | ||
1a9234e6 | 1150 | mlxsw_reg_raleu_pack(raleu_pl, |
76610ebb IS |
1151 | (enum mlxsw_reg_ralxx_protocol) fib->proto, |
1152 | fib->vr->id, adj_index, ecmp_size, new_adj_index, | |
1a9234e6 | 1153 | new_ecmp_size); |
a7ff87ac JP |
1154 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raleu), raleu_pl); |
1155 | } | |
1156 | ||
1157 | static int mlxsw_sp_adj_index_mass_update(struct mlxsw_sp *mlxsw_sp, | |
1158 | struct mlxsw_sp_nexthop_group *nh_grp, | |
1159 | u32 old_adj_index, u16 old_ecmp_size) | |
1160 | { | |
1161 | struct mlxsw_sp_fib_entry *fib_entry; | |
76610ebb | 1162 | struct mlxsw_sp_fib *fib = NULL; |
a7ff87ac JP |
1163 | int err; |
1164 | ||
1165 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
76610ebb | 1166 | if (fib == fib_entry->fib_node->fib) |
a7ff87ac | 1167 | continue; |
76610ebb IS |
1168 | fib = fib_entry->fib_node->fib; |
1169 | err = mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, fib, | |
a7ff87ac JP |
1170 | old_adj_index, |
1171 | old_ecmp_size, | |
1172 | nh_grp->adj_index, | |
1173 | nh_grp->ecmp_size); | |
1174 | if (err) | |
1175 | return err; | |
1176 | } | |
1177 | return 0; | |
1178 | } | |
1179 | ||
1180 | static int mlxsw_sp_nexthop_mac_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, | |
1181 | struct mlxsw_sp_nexthop *nh) | |
1182 | { | |
1183 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
1184 | char ratr_pl[MLXSW_REG_RATR_LEN]; | |
1185 | ||
1186 | mlxsw_reg_ratr_pack(ratr_pl, MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY, | |
1187 | true, adj_index, neigh_entry->rif); | |
1188 | mlxsw_reg_ratr_eth_entry_pack(ratr_pl, neigh_entry->ha); | |
1189 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl); | |
1190 | } | |
1191 | ||
1192 | static int | |
1193 | mlxsw_sp_nexthop_group_mac_update(struct mlxsw_sp *mlxsw_sp, | |
a59b7e02 IS |
1194 | struct mlxsw_sp_nexthop_group *nh_grp, |
1195 | bool reallocate) | |
a7ff87ac JP |
1196 | { |
1197 | u32 adj_index = nh_grp->adj_index; /* base */ | |
1198 | struct mlxsw_sp_nexthop *nh; | |
1199 | int i; | |
1200 | int err; | |
1201 | ||
1202 | for (i = 0; i < nh_grp->count; i++) { | |
1203 | nh = &nh_grp->nexthops[i]; | |
1204 | ||
1205 | if (!nh->should_offload) { | |
1206 | nh->offloaded = 0; | |
1207 | continue; | |
1208 | } | |
1209 | ||
a59b7e02 | 1210 | if (nh->update || reallocate) { |
a7ff87ac JP |
1211 | err = mlxsw_sp_nexthop_mac_update(mlxsw_sp, |
1212 | adj_index, nh); | |
1213 | if (err) | |
1214 | return err; | |
1215 | nh->update = 0; | |
1216 | nh->offloaded = 1; | |
1217 | } | |
1218 | adj_index++; | |
1219 | } | |
1220 | return 0; | |
1221 | } | |
1222 | ||
1223 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
1224 | struct mlxsw_sp_fib_entry *fib_entry); | |
1225 | ||
1226 | static int | |
1227 | mlxsw_sp_nexthop_fib_entries_update(struct mlxsw_sp *mlxsw_sp, | |
1228 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1229 | { | |
1230 | struct mlxsw_sp_fib_entry *fib_entry; | |
1231 | int err; | |
1232 | ||
1233 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
1234 | err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
1235 | if (err) | |
1236 | return err; | |
1237 | } | |
1238 | return 0; | |
1239 | } | |
1240 | ||
1241 | static void | |
1242 | mlxsw_sp_nexthop_group_refresh(struct mlxsw_sp *mlxsw_sp, | |
1243 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1244 | { | |
1245 | struct mlxsw_sp_nexthop *nh; | |
1246 | bool offload_change = false; | |
1247 | u32 adj_index; | |
1248 | u16 ecmp_size = 0; | |
1249 | bool old_adj_index_valid; | |
1250 | u32 old_adj_index; | |
1251 | u16 old_ecmp_size; | |
1252 | int ret; | |
1253 | int i; | |
1254 | int err; | |
1255 | ||
b3e8d1eb IS |
1256 | if (!nh_grp->gateway) { |
1257 | mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1258 | return; | |
1259 | } | |
1260 | ||
a7ff87ac JP |
1261 | for (i = 0; i < nh_grp->count; i++) { |
1262 | nh = &nh_grp->nexthops[i]; | |
1263 | ||
1264 | if (nh->should_offload ^ nh->offloaded) { | |
1265 | offload_change = true; | |
1266 | if (nh->should_offload) | |
1267 | nh->update = 1; | |
1268 | } | |
1269 | if (nh->should_offload) | |
1270 | ecmp_size++; | |
1271 | } | |
1272 | if (!offload_change) { | |
1273 | /* Nothing was added or removed, so no need to reallocate. Just | |
1274 | * update MAC on existing adjacency indexes. | |
1275 | */ | |
a59b7e02 IS |
1276 | err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, |
1277 | false); | |
a7ff87ac JP |
1278 | if (err) { |
1279 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
1280 | goto set_trap; | |
1281 | } | |
1282 | return; | |
1283 | } | |
1284 | if (!ecmp_size) | |
1285 | /* No neigh of this group is connected so we just set | |
1286 | * the trap and let everthing flow through kernel. | |
1287 | */ | |
1288 | goto set_trap; | |
1289 | ||
1290 | ret = mlxsw_sp_kvdl_alloc(mlxsw_sp, ecmp_size); | |
1291 | if (ret < 0) { | |
1292 | /* We ran out of KVD linear space, just set the | |
1293 | * trap and let everything flow through kernel. | |
1294 | */ | |
1295 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to allocate KVD linear area for nexthop group.\n"); | |
1296 | goto set_trap; | |
1297 | } | |
1298 | adj_index = ret; | |
1299 | old_adj_index_valid = nh_grp->adj_index_valid; | |
1300 | old_adj_index = nh_grp->adj_index; | |
1301 | old_ecmp_size = nh_grp->ecmp_size; | |
1302 | nh_grp->adj_index_valid = 1; | |
1303 | nh_grp->adj_index = adj_index; | |
1304 | nh_grp->ecmp_size = ecmp_size; | |
a59b7e02 | 1305 | err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, true); |
a7ff87ac JP |
1306 | if (err) { |
1307 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
1308 | goto set_trap; | |
1309 | } | |
1310 | ||
1311 | if (!old_adj_index_valid) { | |
1312 | /* The trap was set for fib entries, so we have to call | |
1313 | * fib entry update to unset it and use adjacency index. | |
1314 | */ | |
1315 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1316 | if (err) { | |
1317 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to add adjacency index to fib entries.\n"); | |
1318 | goto set_trap; | |
1319 | } | |
1320 | return; | |
1321 | } | |
1322 | ||
1323 | err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, nh_grp, | |
1324 | old_adj_index, old_ecmp_size); | |
1325 | mlxsw_sp_kvdl_free(mlxsw_sp, old_adj_index); | |
1326 | if (err) { | |
1327 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to mass-update adjacency index for nexthop group.\n"); | |
1328 | goto set_trap; | |
1329 | } | |
1330 | return; | |
1331 | ||
1332 | set_trap: | |
1333 | old_adj_index_valid = nh_grp->adj_index_valid; | |
1334 | nh_grp->adj_index_valid = 0; | |
1335 | for (i = 0; i < nh_grp->count; i++) { | |
1336 | nh = &nh_grp->nexthops[i]; | |
1337 | nh->offloaded = 0; | |
1338 | } | |
1339 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1340 | if (err) | |
1341 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set traps for fib entries.\n"); | |
1342 | if (old_adj_index_valid) | |
1343 | mlxsw_sp_kvdl_free(mlxsw_sp, nh_grp->adj_index); | |
1344 | } | |
1345 | ||
1346 | static void __mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp_nexthop *nh, | |
1347 | bool removing) | |
1348 | { | |
1349 | if (!removing && !nh->should_offload) | |
1350 | nh->should_offload = 1; | |
1351 | else if (removing && nh->offloaded) | |
1352 | nh->should_offload = 0; | |
1353 | nh->update = 1; | |
1354 | } | |
1355 | ||
1356 | static void | |
1357 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
1358 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1359 | bool removing) | |
1360 | { | |
1361 | struct mlxsw_sp_nexthop *nh; | |
1362 | ||
a7ff87ac JP |
1363 | list_for_each_entry(nh, &neigh_entry->nexthop_list, |
1364 | neigh_list_node) { | |
1365 | __mlxsw_sp_nexthop_neigh_update(nh, removing); | |
1366 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1367 | } | |
a7ff87ac JP |
1368 | } |
1369 | ||
9665b745 IS |
1370 | static void mlxsw_sp_nexthop_rif_init(struct mlxsw_sp_nexthop *nh, |
1371 | struct mlxsw_sp_rif *r) | |
1372 | { | |
1373 | if (nh->r) | |
1374 | return; | |
1375 | ||
1376 | nh->r = r; | |
1377 | list_add(&nh->rif_list_node, &r->nexthop_list); | |
1378 | } | |
1379 | ||
1380 | static void mlxsw_sp_nexthop_rif_fini(struct mlxsw_sp_nexthop *nh) | |
1381 | { | |
1382 | if (!nh->r) | |
1383 | return; | |
1384 | ||
1385 | list_del(&nh->rif_list_node); | |
1386 | nh->r = NULL; | |
1387 | } | |
1388 | ||
a8c97014 IS |
1389 | static int mlxsw_sp_nexthop_neigh_init(struct mlxsw_sp *mlxsw_sp, |
1390 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
1391 | { |
1392 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
a8c97014 | 1393 | struct fib_nh *fib_nh = nh->key.fib_nh; |
a7ff87ac | 1394 | struct neighbour *n; |
93a87e5e | 1395 | u8 nud_state, dead; |
c53b8e1b IS |
1396 | int err; |
1397 | ||
ad178c8e | 1398 | if (!nh->nh_grp->gateway || nh->neigh_entry) |
b8399a1e IS |
1399 | return 0; |
1400 | ||
33b1341c JP |
1401 | /* Take a reference of neigh here ensuring that neigh would |
1402 | * not be detructed before the nexthop entry is finished. | |
1403 | * The reference is taken either in neigh_lookup() or | |
fd76d910 | 1404 | * in neigh_create() in case n is not found. |
33b1341c | 1405 | */ |
a8c97014 | 1406 | n = neigh_lookup(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev); |
33b1341c | 1407 | if (!n) { |
a8c97014 IS |
1408 | n = neigh_create(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev); |
1409 | if (IS_ERR(n)) | |
1410 | return PTR_ERR(n); | |
a7ff87ac | 1411 | neigh_event_send(n, NULL); |
33b1341c JP |
1412 | } |
1413 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); | |
1414 | if (!neigh_entry) { | |
5c8802f1 IS |
1415 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); |
1416 | if (IS_ERR(neigh_entry)) { | |
c53b8e1b IS |
1417 | err = -EINVAL; |
1418 | goto err_neigh_entry_create; | |
5c8802f1 | 1419 | } |
a7ff87ac | 1420 | } |
b2157149 YG |
1421 | |
1422 | /* If that is the first nexthop connected to that neigh, add to | |
1423 | * nexthop_neighs_list | |
1424 | */ | |
1425 | if (list_empty(&neigh_entry->nexthop_list)) | |
1426 | list_add_tail(&neigh_entry->nexthop_neighs_list_node, | |
1427 | &mlxsw_sp->router.nexthop_neighs_list); | |
1428 | ||
a7ff87ac JP |
1429 | nh->neigh_entry = neigh_entry; |
1430 | list_add_tail(&nh->neigh_list_node, &neigh_entry->nexthop_list); | |
1431 | read_lock_bh(&n->lock); | |
1432 | nud_state = n->nud_state; | |
93a87e5e | 1433 | dead = n->dead; |
a7ff87ac | 1434 | read_unlock_bh(&n->lock); |
93a87e5e | 1435 | __mlxsw_sp_nexthop_neigh_update(nh, !(nud_state & NUD_VALID && !dead)); |
a7ff87ac JP |
1436 | |
1437 | return 0; | |
c53b8e1b IS |
1438 | |
1439 | err_neigh_entry_create: | |
1440 | neigh_release(n); | |
c53b8e1b | 1441 | return err; |
a7ff87ac JP |
1442 | } |
1443 | ||
a8c97014 IS |
1444 | static void mlxsw_sp_nexthop_neigh_fini(struct mlxsw_sp *mlxsw_sp, |
1445 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
1446 | { |
1447 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
a8c97014 | 1448 | struct neighbour *n; |
a7ff87ac | 1449 | |
b8399a1e | 1450 | if (!neigh_entry) |
a8c97014 IS |
1451 | return; |
1452 | n = neigh_entry->key.n; | |
b8399a1e | 1453 | |
58312125 | 1454 | __mlxsw_sp_nexthop_neigh_update(nh, true); |
a7ff87ac | 1455 | list_del(&nh->neigh_list_node); |
e58be79e | 1456 | nh->neigh_entry = NULL; |
b2157149 YG |
1457 | |
1458 | /* If that is the last nexthop connected to that neigh, remove from | |
1459 | * nexthop_neighs_list | |
1460 | */ | |
e58be79e IS |
1461 | if (list_empty(&neigh_entry->nexthop_list)) |
1462 | list_del(&neigh_entry->nexthop_neighs_list_node); | |
b2157149 | 1463 | |
5c8802f1 IS |
1464 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) |
1465 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1466 | ||
1467 | neigh_release(n); | |
a8c97014 | 1468 | } |
c53b8e1b | 1469 | |
a8c97014 IS |
1470 | static int mlxsw_sp_nexthop_init(struct mlxsw_sp *mlxsw_sp, |
1471 | struct mlxsw_sp_nexthop_group *nh_grp, | |
1472 | struct mlxsw_sp_nexthop *nh, | |
1473 | struct fib_nh *fib_nh) | |
1474 | { | |
1475 | struct net_device *dev = fib_nh->nh_dev; | |
df6dd79b | 1476 | struct in_device *in_dev; |
a8c97014 IS |
1477 | struct mlxsw_sp_rif *r; |
1478 | int err; | |
1479 | ||
1480 | nh->nh_grp = nh_grp; | |
1481 | nh->key.fib_nh = fib_nh; | |
1482 | err = mlxsw_sp_nexthop_insert(mlxsw_sp, nh); | |
1483 | if (err) | |
1484 | return err; | |
1485 | ||
97989ee0 IS |
1486 | if (!dev) |
1487 | return 0; | |
1488 | ||
df6dd79b IS |
1489 | in_dev = __in_dev_get_rtnl(dev); |
1490 | if (in_dev && IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) && | |
1491 | fib_nh->nh_flags & RTNH_F_LINKDOWN) | |
1492 | return 0; | |
1493 | ||
a8c97014 IS |
1494 | r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
1495 | if (!r) | |
1496 | return 0; | |
9665b745 | 1497 | mlxsw_sp_nexthop_rif_init(nh, r); |
a8c97014 IS |
1498 | |
1499 | err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); | |
1500 | if (err) | |
1501 | goto err_nexthop_neigh_init; | |
1502 | ||
1503 | return 0; | |
1504 | ||
1505 | err_nexthop_neigh_init: | |
1506 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); | |
1507 | return err; | |
1508 | } | |
1509 | ||
1510 | static void mlxsw_sp_nexthop_fini(struct mlxsw_sp *mlxsw_sp, | |
1511 | struct mlxsw_sp_nexthop *nh) | |
1512 | { | |
1513 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
9665b745 | 1514 | mlxsw_sp_nexthop_rif_fini(nh); |
c53b8e1b | 1515 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); |
a7ff87ac JP |
1516 | } |
1517 | ||
ad178c8e IS |
1518 | static void mlxsw_sp_nexthop_event(struct mlxsw_sp *mlxsw_sp, |
1519 | unsigned long event, struct fib_nh *fib_nh) | |
1520 | { | |
1521 | struct mlxsw_sp_nexthop_key key; | |
1522 | struct mlxsw_sp_nexthop *nh; | |
1523 | struct mlxsw_sp_rif *r; | |
1524 | ||
1525 | if (mlxsw_sp->router.aborted) | |
1526 | return; | |
1527 | ||
1528 | key.fib_nh = fib_nh; | |
1529 | nh = mlxsw_sp_nexthop_lookup(mlxsw_sp, key); | |
1530 | if (WARN_ON_ONCE(!nh)) | |
1531 | return; | |
1532 | ||
1533 | r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, fib_nh->nh_dev); | |
1534 | if (!r) | |
1535 | return; | |
1536 | ||
1537 | switch (event) { | |
1538 | case FIB_EVENT_NH_ADD: | |
9665b745 | 1539 | mlxsw_sp_nexthop_rif_init(nh, r); |
ad178c8e IS |
1540 | mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); |
1541 | break; | |
1542 | case FIB_EVENT_NH_DEL: | |
1543 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
9665b745 | 1544 | mlxsw_sp_nexthop_rif_fini(nh); |
ad178c8e IS |
1545 | break; |
1546 | } | |
1547 | ||
1548 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1549 | } | |
1550 | ||
9665b745 IS |
1551 | static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, |
1552 | struct mlxsw_sp_rif *r) | |
1553 | { | |
1554 | struct mlxsw_sp_nexthop *nh, *tmp; | |
1555 | ||
1556 | list_for_each_entry_safe(nh, tmp, &r->nexthop_list, rif_list_node) { | |
1557 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
1558 | mlxsw_sp_nexthop_rif_fini(nh); | |
1559 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1560 | } | |
1561 | } | |
1562 | ||
a7ff87ac JP |
1563 | static struct mlxsw_sp_nexthop_group * |
1564 | mlxsw_sp_nexthop_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi) | |
1565 | { | |
1566 | struct mlxsw_sp_nexthop_group *nh_grp; | |
1567 | struct mlxsw_sp_nexthop *nh; | |
1568 | struct fib_nh *fib_nh; | |
1569 | size_t alloc_size; | |
1570 | int i; | |
1571 | int err; | |
1572 | ||
1573 | alloc_size = sizeof(*nh_grp) + | |
1574 | fi->fib_nhs * sizeof(struct mlxsw_sp_nexthop); | |
1575 | nh_grp = kzalloc(alloc_size, GFP_KERNEL); | |
1576 | if (!nh_grp) | |
1577 | return ERR_PTR(-ENOMEM); | |
1578 | INIT_LIST_HEAD(&nh_grp->fib_list); | |
b3e8d1eb | 1579 | nh_grp->gateway = fi->fib_nh->nh_scope == RT_SCOPE_LINK; |
a7ff87ac | 1580 | nh_grp->count = fi->fib_nhs; |
e9ad5e7d | 1581 | nh_grp->key.fi = fi; |
a7ff87ac JP |
1582 | for (i = 0; i < nh_grp->count; i++) { |
1583 | nh = &nh_grp->nexthops[i]; | |
1584 | fib_nh = &fi->fib_nh[i]; | |
1585 | err = mlxsw_sp_nexthop_init(mlxsw_sp, nh_grp, nh, fib_nh); | |
1586 | if (err) | |
1587 | goto err_nexthop_init; | |
1588 | } | |
e9ad5e7d IS |
1589 | err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); |
1590 | if (err) | |
1591 | goto err_nexthop_group_insert; | |
a7ff87ac JP |
1592 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
1593 | return nh_grp; | |
1594 | ||
e9ad5e7d | 1595 | err_nexthop_group_insert: |
a7ff87ac | 1596 | err_nexthop_init: |
df6dd79b IS |
1597 | for (i--; i >= 0; i--) { |
1598 | nh = &nh_grp->nexthops[i]; | |
a7ff87ac | 1599 | mlxsw_sp_nexthop_fini(mlxsw_sp, nh); |
df6dd79b | 1600 | } |
a7ff87ac JP |
1601 | kfree(nh_grp); |
1602 | return ERR_PTR(err); | |
1603 | } | |
1604 | ||
1605 | static void | |
1606 | mlxsw_sp_nexthop_group_destroy(struct mlxsw_sp *mlxsw_sp, | |
1607 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1608 | { | |
1609 | struct mlxsw_sp_nexthop *nh; | |
1610 | int i; | |
1611 | ||
e9ad5e7d | 1612 | mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); |
a7ff87ac JP |
1613 | for (i = 0; i < nh_grp->count; i++) { |
1614 | nh = &nh_grp->nexthops[i]; | |
1615 | mlxsw_sp_nexthop_fini(mlxsw_sp, nh); | |
1616 | } | |
58312125 IS |
1617 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
1618 | WARN_ON_ONCE(nh_grp->adj_index_valid); | |
a7ff87ac JP |
1619 | kfree(nh_grp); |
1620 | } | |
1621 | ||
a7ff87ac JP |
1622 | static int mlxsw_sp_nexthop_group_get(struct mlxsw_sp *mlxsw_sp, |
1623 | struct mlxsw_sp_fib_entry *fib_entry, | |
1624 | struct fib_info *fi) | |
1625 | { | |
e9ad5e7d | 1626 | struct mlxsw_sp_nexthop_group_key key; |
a7ff87ac JP |
1627 | struct mlxsw_sp_nexthop_group *nh_grp; |
1628 | ||
e9ad5e7d IS |
1629 | key.fi = fi; |
1630 | nh_grp = mlxsw_sp_nexthop_group_lookup(mlxsw_sp, key); | |
a7ff87ac JP |
1631 | if (!nh_grp) { |
1632 | nh_grp = mlxsw_sp_nexthop_group_create(mlxsw_sp, fi); | |
1633 | if (IS_ERR(nh_grp)) | |
1634 | return PTR_ERR(nh_grp); | |
1635 | } | |
1636 | list_add_tail(&fib_entry->nexthop_group_node, &nh_grp->fib_list); | |
1637 | fib_entry->nh_group = nh_grp; | |
1638 | return 0; | |
1639 | } | |
1640 | ||
1641 | static void mlxsw_sp_nexthop_group_put(struct mlxsw_sp *mlxsw_sp, | |
1642 | struct mlxsw_sp_fib_entry *fib_entry) | |
1643 | { | |
1644 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
1645 | ||
1646 | list_del(&fib_entry->nexthop_group_node); | |
1647 | if (!list_empty(&nh_grp->fib_list)) | |
1648 | return; | |
1649 | mlxsw_sp_nexthop_group_destroy(mlxsw_sp, nh_grp); | |
1650 | } | |
1651 | ||
013b20f9 IS |
1652 | static bool |
1653 | mlxsw_sp_fib_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) | |
1654 | { | |
1655 | struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group; | |
1656 | ||
9aecce1c IS |
1657 | if (fib_entry->params.tos) |
1658 | return false; | |
1659 | ||
013b20f9 IS |
1660 | switch (fib_entry->type) { |
1661 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
1662 | return !!nh_group->adj_index_valid; | |
1663 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: | |
70ad3506 | 1664 | return !!nh_group->nh_rif; |
013b20f9 IS |
1665 | default: |
1666 | return false; | |
1667 | } | |
1668 | } | |
1669 | ||
1670 | static void mlxsw_sp_fib_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) | |
1671 | { | |
1672 | fib_entry->offloaded = true; | |
1673 | ||
76610ebb | 1674 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 IS |
1675 | case MLXSW_SP_L3_PROTO_IPV4: |
1676 | fib_info_offload_inc(fib_entry->nh_group->key.fi); | |
1677 | break; | |
1678 | case MLXSW_SP_L3_PROTO_IPV6: | |
1679 | WARN_ON_ONCE(1); | |
1680 | } | |
1681 | } | |
1682 | ||
1683 | static void | |
1684 | mlxsw_sp_fib_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
1685 | { | |
76610ebb | 1686 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 IS |
1687 | case MLXSW_SP_L3_PROTO_IPV4: |
1688 | fib_info_offload_dec(fib_entry->nh_group->key.fi); | |
1689 | break; | |
1690 | case MLXSW_SP_L3_PROTO_IPV6: | |
1691 | WARN_ON_ONCE(1); | |
1692 | } | |
1693 | ||
1694 | fib_entry->offloaded = false; | |
1695 | } | |
1696 | ||
1697 | static void | |
1698 | mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry, | |
1699 | enum mlxsw_reg_ralue_op op, int err) | |
1700 | { | |
1701 | switch (op) { | |
1702 | case MLXSW_REG_RALUE_OP_WRITE_DELETE: | |
1703 | if (!fib_entry->offloaded) | |
1704 | return; | |
1705 | return mlxsw_sp_fib_entry_offload_unset(fib_entry); | |
1706 | case MLXSW_REG_RALUE_OP_WRITE_WRITE: | |
1707 | if (err) | |
1708 | return; | |
1709 | if (mlxsw_sp_fib_entry_should_offload(fib_entry) && | |
1710 | !fib_entry->offloaded) | |
1711 | mlxsw_sp_fib_entry_offload_set(fib_entry); | |
1712 | else if (!mlxsw_sp_fib_entry_should_offload(fib_entry) && | |
1713 | fib_entry->offloaded) | |
1714 | mlxsw_sp_fib_entry_offload_unset(fib_entry); | |
1715 | return; | |
1716 | default: | |
1717 | return; | |
1718 | } | |
1719 | } | |
1720 | ||
a7ff87ac JP |
1721 | static int mlxsw_sp_fib_entry_op4_remote(struct mlxsw_sp *mlxsw_sp, |
1722 | struct mlxsw_sp_fib_entry *fib_entry, | |
1723 | enum mlxsw_reg_ralue_op op) | |
1724 | { | |
1725 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
76610ebb | 1726 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
9aecce1c | 1727 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
a7ff87ac JP |
1728 | enum mlxsw_reg_ralue_trap_action trap_action; |
1729 | u16 trap_id = 0; | |
1730 | u32 adjacency_index = 0; | |
1731 | u16 ecmp_size = 0; | |
1732 | ||
1733 | /* In case the nexthop group adjacency index is valid, use it | |
1734 | * with provided ECMP size. Otherwise, setup trap and pass | |
1735 | * traffic to kernel. | |
1736 | */ | |
4b411477 | 1737 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { |
a7ff87ac JP |
1738 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; |
1739 | adjacency_index = fib_entry->nh_group->adj_index; | |
1740 | ecmp_size = fib_entry->nh_group->ecmp_size; | |
1741 | } else { | |
1742 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
1743 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
1744 | } | |
1745 | ||
1a9234e6 | 1746 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
1747 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
1748 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 1749 | *p_dip); |
a7ff87ac JP |
1750 | mlxsw_reg_ralue_act_remote_pack(ralue_pl, trap_action, trap_id, |
1751 | adjacency_index, ecmp_size); | |
1752 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
1753 | } | |
1754 | ||
61c503f9 JP |
1755 | static int mlxsw_sp_fib_entry_op4_local(struct mlxsw_sp *mlxsw_sp, |
1756 | struct mlxsw_sp_fib_entry *fib_entry, | |
1757 | enum mlxsw_reg_ralue_op op) | |
1758 | { | |
b8399a1e | 1759 | struct mlxsw_sp_rif *r = fib_entry->nh_group->nh_rif; |
76610ebb | 1760 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
70ad3506 | 1761 | enum mlxsw_reg_ralue_trap_action trap_action; |
61c503f9 | 1762 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
9aecce1c | 1763 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
70ad3506 IS |
1764 | u16 trap_id = 0; |
1765 | u16 rif = 0; | |
1766 | ||
1767 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { | |
1768 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; | |
1769 | rif = r->rif; | |
1770 | } else { | |
1771 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
1772 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
1773 | } | |
61c503f9 | 1774 | |
1a9234e6 | 1775 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
1776 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
1777 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 1778 | *p_dip); |
70ad3506 | 1779 | mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id, rif); |
61c503f9 JP |
1780 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); |
1781 | } | |
1782 | ||
1783 | static int mlxsw_sp_fib_entry_op4_trap(struct mlxsw_sp *mlxsw_sp, | |
1784 | struct mlxsw_sp_fib_entry *fib_entry, | |
1785 | enum mlxsw_reg_ralue_op op) | |
1786 | { | |
76610ebb | 1787 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
61c503f9 | 1788 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
9aecce1c | 1789 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
61c503f9 | 1790 | |
1a9234e6 | 1791 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
1792 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
1793 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 1794 | *p_dip); |
61c503f9 JP |
1795 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); |
1796 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
1797 | } | |
1798 | ||
1799 | static int mlxsw_sp_fib_entry_op4(struct mlxsw_sp *mlxsw_sp, | |
1800 | struct mlxsw_sp_fib_entry *fib_entry, | |
1801 | enum mlxsw_reg_ralue_op op) | |
1802 | { | |
1803 | switch (fib_entry->type) { | |
1804 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
a7ff87ac | 1805 | return mlxsw_sp_fib_entry_op4_remote(mlxsw_sp, fib_entry, op); |
61c503f9 JP |
1806 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: |
1807 | return mlxsw_sp_fib_entry_op4_local(mlxsw_sp, fib_entry, op); | |
1808 | case MLXSW_SP_FIB_ENTRY_TYPE_TRAP: | |
1809 | return mlxsw_sp_fib_entry_op4_trap(mlxsw_sp, fib_entry, op); | |
1810 | } | |
1811 | return -EINVAL; | |
1812 | } | |
1813 | ||
1814 | static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, | |
1815 | struct mlxsw_sp_fib_entry *fib_entry, | |
1816 | enum mlxsw_reg_ralue_op op) | |
1817 | { | |
013b20f9 IS |
1818 | int err = -EINVAL; |
1819 | ||
76610ebb | 1820 | switch (fib_entry->fib_node->fib->proto) { |
61c503f9 | 1821 | case MLXSW_SP_L3_PROTO_IPV4: |
013b20f9 IS |
1822 | err = mlxsw_sp_fib_entry_op4(mlxsw_sp, fib_entry, op); |
1823 | break; | |
61c503f9 | 1824 | case MLXSW_SP_L3_PROTO_IPV6: |
013b20f9 | 1825 | return err; |
61c503f9 | 1826 | } |
013b20f9 IS |
1827 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, err); |
1828 | return err; | |
61c503f9 JP |
1829 | } |
1830 | ||
1831 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
1832 | struct mlxsw_sp_fib_entry *fib_entry) | |
1833 | { | |
7146da31 JP |
1834 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, |
1835 | MLXSW_REG_RALUE_OP_WRITE_WRITE); | |
61c503f9 JP |
1836 | } |
1837 | ||
1838 | static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp, | |
1839 | struct mlxsw_sp_fib_entry *fib_entry) | |
1840 | { | |
1841 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, | |
1842 | MLXSW_REG_RALUE_OP_WRITE_DELETE); | |
1843 | } | |
1844 | ||
61c503f9 | 1845 | static int |
013b20f9 IS |
1846 | mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp, |
1847 | const struct fib_entry_notifier_info *fen_info, | |
1848 | struct mlxsw_sp_fib_entry *fib_entry) | |
61c503f9 | 1849 | { |
b45f64d1 | 1850 | struct fib_info *fi = fen_info->fi; |
61c503f9 | 1851 | |
97989ee0 IS |
1852 | switch (fen_info->type) { |
1853 | case RTN_BROADCAST: /* fall through */ | |
1854 | case RTN_LOCAL: | |
61c503f9 JP |
1855 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; |
1856 | return 0; | |
97989ee0 IS |
1857 | case RTN_UNREACHABLE: /* fall through */ |
1858 | case RTN_BLACKHOLE: /* fall through */ | |
1859 | case RTN_PROHIBIT: | |
1860 | /* Packets hitting these routes need to be trapped, but | |
1861 | * can do so with a lower priority than packets directed | |
1862 | * at the host, so use action type local instead of trap. | |
1863 | */ | |
61c503f9 | 1864 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; |
97989ee0 IS |
1865 | return 0; |
1866 | case RTN_UNICAST: | |
1867 | if (fi->fib_nh->nh_scope != RT_SCOPE_LINK) | |
1868 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
1869 | else | |
1870 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; | |
1871 | return 0; | |
1872 | default: | |
1873 | return -EINVAL; | |
1874 | } | |
a7ff87ac JP |
1875 | } |
1876 | ||
5b004412 | 1877 | static struct mlxsw_sp_fib_entry * |
9aecce1c IS |
1878 | mlxsw_sp_fib4_entry_create(struct mlxsw_sp *mlxsw_sp, |
1879 | struct mlxsw_sp_fib_node *fib_node, | |
1880 | const struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 1881 | { |
61c503f9 | 1882 | struct mlxsw_sp_fib_entry *fib_entry; |
61c503f9 JP |
1883 | int err; |
1884 | ||
9aecce1c | 1885 | fib_entry = kzalloc(sizeof(*fib_entry), GFP_KERNEL); |
61c503f9 JP |
1886 | if (!fib_entry) { |
1887 | err = -ENOMEM; | |
9aecce1c | 1888 | goto err_fib_entry_alloc; |
61c503f9 | 1889 | } |
61c503f9 | 1890 | |
013b20f9 | 1891 | err = mlxsw_sp_fib4_entry_type_set(mlxsw_sp, fen_info, fib_entry); |
61c503f9 | 1892 | if (err) |
013b20f9 | 1893 | goto err_fib4_entry_type_set; |
61c503f9 | 1894 | |
9aecce1c | 1895 | err = mlxsw_sp_nexthop_group_get(mlxsw_sp, fib_entry, fen_info->fi); |
b8399a1e IS |
1896 | if (err) |
1897 | goto err_nexthop_group_get; | |
1898 | ||
9aecce1c IS |
1899 | fib_entry->params.prio = fen_info->fi->fib_priority; |
1900 | fib_entry->params.tb_id = fen_info->tb_id; | |
1901 | fib_entry->params.type = fen_info->type; | |
1902 | fib_entry->params.tos = fen_info->tos; | |
1903 | ||
1904 | fib_entry->fib_node = fib_node; | |
1905 | ||
5b004412 JP |
1906 | return fib_entry; |
1907 | ||
b8399a1e | 1908 | err_nexthop_group_get: |
013b20f9 | 1909 | err_fib4_entry_type_set: |
9aecce1c IS |
1910 | kfree(fib_entry); |
1911 | err_fib_entry_alloc: | |
5b004412 JP |
1912 | return ERR_PTR(err); |
1913 | } | |
1914 | ||
9aecce1c IS |
1915 | static void mlxsw_sp_fib4_entry_destroy(struct mlxsw_sp *mlxsw_sp, |
1916 | struct mlxsw_sp_fib_entry *fib_entry) | |
1917 | { | |
1918 | mlxsw_sp_nexthop_group_put(mlxsw_sp, fib_entry); | |
1919 | kfree(fib_entry); | |
1920 | } | |
1921 | ||
1922 | static struct mlxsw_sp_fib_node * | |
1923 | mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp, | |
1924 | const struct fib_entry_notifier_info *fen_info); | |
1925 | ||
5b004412 | 1926 | static struct mlxsw_sp_fib_entry * |
9aecce1c IS |
1927 | mlxsw_sp_fib4_entry_lookup(struct mlxsw_sp *mlxsw_sp, |
1928 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 1929 | { |
9aecce1c IS |
1930 | struct mlxsw_sp_fib_entry *fib_entry; |
1931 | struct mlxsw_sp_fib_node *fib_node; | |
5b004412 | 1932 | |
9aecce1c IS |
1933 | fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info); |
1934 | if (IS_ERR(fib_node)) | |
1935 | return NULL; | |
1936 | ||
1937 | list_for_each_entry(fib_entry, &fib_node->entry_list, list) { | |
1938 | if (fib_entry->params.tb_id == fen_info->tb_id && | |
1939 | fib_entry->params.tos == fen_info->tos && | |
1940 | fib_entry->params.type == fen_info->type && | |
1941 | fib_entry->nh_group->key.fi == fen_info->fi) { | |
1942 | return fib_entry; | |
1943 | } | |
1944 | } | |
1945 | ||
1946 | return NULL; | |
1947 | } | |
1948 | ||
1949 | static const struct rhashtable_params mlxsw_sp_fib_ht_params = { | |
1950 | .key_offset = offsetof(struct mlxsw_sp_fib_node, key), | |
1951 | .head_offset = offsetof(struct mlxsw_sp_fib_node, ht_node), | |
1952 | .key_len = sizeof(struct mlxsw_sp_fib_key), | |
1953 | .automatic_shrinking = true, | |
1954 | }; | |
1955 | ||
1956 | static int mlxsw_sp_fib_node_insert(struct mlxsw_sp_fib *fib, | |
1957 | struct mlxsw_sp_fib_node *fib_node) | |
1958 | { | |
1959 | return rhashtable_insert_fast(&fib->ht, &fib_node->ht_node, | |
1960 | mlxsw_sp_fib_ht_params); | |
1961 | } | |
1962 | ||
1963 | static void mlxsw_sp_fib_node_remove(struct mlxsw_sp_fib *fib, | |
1964 | struct mlxsw_sp_fib_node *fib_node) | |
1965 | { | |
1966 | rhashtable_remove_fast(&fib->ht, &fib_node->ht_node, | |
1967 | mlxsw_sp_fib_ht_params); | |
1968 | } | |
1969 | ||
1970 | static struct mlxsw_sp_fib_node * | |
1971 | mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr, | |
1972 | size_t addr_len, unsigned char prefix_len) | |
1973 | { | |
1974 | struct mlxsw_sp_fib_key key; | |
1975 | ||
1976 | memset(&key, 0, sizeof(key)); | |
1977 | memcpy(key.addr, addr, addr_len); | |
1978 | key.prefix_len = prefix_len; | |
1979 | return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params); | |
1980 | } | |
1981 | ||
1982 | static struct mlxsw_sp_fib_node * | |
76610ebb | 1983 | mlxsw_sp_fib_node_create(struct mlxsw_sp_fib *fib, const void *addr, |
9aecce1c IS |
1984 | size_t addr_len, unsigned char prefix_len) |
1985 | { | |
1986 | struct mlxsw_sp_fib_node *fib_node; | |
1987 | ||
1988 | fib_node = kzalloc(sizeof(*fib_node), GFP_KERNEL); | |
1989 | if (!fib_node) | |
5b004412 JP |
1990 | return NULL; |
1991 | ||
9aecce1c | 1992 | INIT_LIST_HEAD(&fib_node->entry_list); |
76610ebb | 1993 | list_add(&fib_node->list, &fib->node_list); |
9aecce1c IS |
1994 | memcpy(fib_node->key.addr, addr, addr_len); |
1995 | fib_node->key.prefix_len = prefix_len; | |
9aecce1c IS |
1996 | |
1997 | return fib_node; | |
1998 | } | |
1999 | ||
2000 | static void mlxsw_sp_fib_node_destroy(struct mlxsw_sp_fib_node *fib_node) | |
2001 | { | |
9aecce1c IS |
2002 | list_del(&fib_node->list); |
2003 | WARN_ON(!list_empty(&fib_node->entry_list)); | |
2004 | kfree(fib_node); | |
2005 | } | |
2006 | ||
2007 | static bool | |
2008 | mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node, | |
2009 | const struct mlxsw_sp_fib_entry *fib_entry) | |
2010 | { | |
2011 | return list_first_entry(&fib_node->entry_list, | |
2012 | struct mlxsw_sp_fib_entry, list) == fib_entry; | |
2013 | } | |
2014 | ||
2015 | static void mlxsw_sp_fib_node_prefix_inc(struct mlxsw_sp_fib_node *fib_node) | |
2016 | { | |
2017 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 2018 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
2019 | |
2020 | if (fib->prefix_ref_count[prefix_len]++ == 0) | |
2021 | mlxsw_sp_prefix_usage_set(&fib->prefix_usage, prefix_len); | |
2022 | } | |
2023 | ||
2024 | static void mlxsw_sp_fib_node_prefix_dec(struct mlxsw_sp_fib_node *fib_node) | |
2025 | { | |
2026 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 2027 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
2028 | |
2029 | if (--fib->prefix_ref_count[prefix_len] == 0) | |
2030 | mlxsw_sp_prefix_usage_clear(&fib->prefix_usage, prefix_len); | |
5b004412 JP |
2031 | } |
2032 | ||
76610ebb IS |
2033 | static int mlxsw_sp_fib_node_init(struct mlxsw_sp *mlxsw_sp, |
2034 | struct mlxsw_sp_fib_node *fib_node, | |
2035 | struct mlxsw_sp_fib *fib) | |
2036 | { | |
2037 | struct mlxsw_sp_prefix_usage req_prefix_usage; | |
2038 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
2039 | int err; | |
2040 | ||
2041 | err = mlxsw_sp_fib_node_insert(fib, fib_node); | |
2042 | if (err) | |
2043 | return err; | |
2044 | fib_node->fib = fib; | |
2045 | ||
2046 | mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, &fib->prefix_usage); | |
2047 | mlxsw_sp_prefix_usage_set(&req_prefix_usage, fib_node->key.prefix_len); | |
2048 | ||
2049 | if (!mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) { | |
2050 | err = mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib, | |
2051 | &req_prefix_usage); | |
2052 | if (err) | |
2053 | goto err_tree_check; | |
2054 | } else { | |
2055 | lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, | |
2056 | fib->proto); | |
2057 | if (IS_ERR(lpm_tree)) | |
2058 | return PTR_ERR(lpm_tree); | |
2059 | fib->lpm_tree = lpm_tree; | |
2060 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib); | |
2061 | if (err) | |
2062 | goto err_tree_bind; | |
2063 | } | |
2064 | ||
2065 | mlxsw_sp_fib_node_prefix_inc(fib_node); | |
2066 | ||
2067 | return 0; | |
2068 | ||
2069 | err_tree_bind: | |
2070 | fib->lpm_tree = NULL; | |
2071 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
2072 | err_tree_check: | |
2073 | fib_node->fib = NULL; | |
2074 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
2075 | return err; | |
2076 | } | |
2077 | ||
2078 | static void mlxsw_sp_fib_node_fini(struct mlxsw_sp *mlxsw_sp, | |
2079 | struct mlxsw_sp_fib_node *fib_node) | |
2080 | { | |
2081 | struct mlxsw_sp_lpm_tree *lpm_tree = fib_node->fib->lpm_tree; | |
2082 | struct mlxsw_sp_fib *fib = fib_node->fib; | |
2083 | ||
2084 | mlxsw_sp_fib_node_prefix_dec(fib_node); | |
2085 | ||
2086 | if (mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) { | |
2087 | mlxsw_sp_vr_lpm_tree_unbind(mlxsw_sp, fib); | |
2088 | fib->lpm_tree = NULL; | |
2089 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
2090 | } else { | |
2091 | mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib, &fib->prefix_usage); | |
2092 | } | |
2093 | ||
2094 | fib_node->fib = NULL; | |
2095 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
2096 | } | |
2097 | ||
9aecce1c IS |
2098 | static struct mlxsw_sp_fib_node * |
2099 | mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp, | |
2100 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 2101 | { |
9aecce1c | 2102 | struct mlxsw_sp_fib_node *fib_node; |
76610ebb | 2103 | struct mlxsw_sp_fib *fib; |
9aecce1c IS |
2104 | struct mlxsw_sp_vr *vr; |
2105 | int err; | |
2106 | ||
76610ebb | 2107 | vr = mlxsw_sp_vr_get(mlxsw_sp, fen_info->tb_id); |
9aecce1c IS |
2108 | if (IS_ERR(vr)) |
2109 | return ERR_CAST(vr); | |
76610ebb | 2110 | fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV4); |
9aecce1c | 2111 | |
76610ebb | 2112 | fib_node = mlxsw_sp_fib_node_lookup(fib, &fen_info->dst, |
9aecce1c IS |
2113 | sizeof(fen_info->dst), |
2114 | fen_info->dst_len); | |
2115 | if (fib_node) | |
2116 | return fib_node; | |
5b004412 | 2117 | |
76610ebb | 2118 | fib_node = mlxsw_sp_fib_node_create(fib, &fen_info->dst, |
9aecce1c IS |
2119 | sizeof(fen_info->dst), |
2120 | fen_info->dst_len); | |
2121 | if (!fib_node) { | |
2122 | err = -ENOMEM; | |
2123 | goto err_fib_node_create; | |
5b004412 | 2124 | } |
9aecce1c | 2125 | |
76610ebb IS |
2126 | err = mlxsw_sp_fib_node_init(mlxsw_sp, fib_node, fib); |
2127 | if (err) | |
2128 | goto err_fib_node_init; | |
2129 | ||
9aecce1c IS |
2130 | return fib_node; |
2131 | ||
76610ebb IS |
2132 | err_fib_node_init: |
2133 | mlxsw_sp_fib_node_destroy(fib_node); | |
9aecce1c | 2134 | err_fib_node_create: |
76610ebb | 2135 | mlxsw_sp_vr_put(vr); |
9aecce1c | 2136 | return ERR_PTR(err); |
5b004412 JP |
2137 | } |
2138 | ||
9aecce1c IS |
2139 | static void mlxsw_sp_fib4_node_put(struct mlxsw_sp *mlxsw_sp, |
2140 | struct mlxsw_sp_fib_node *fib_node) | |
5b004412 | 2141 | { |
76610ebb | 2142 | struct mlxsw_sp_vr *vr = fib_node->fib->vr; |
5b004412 | 2143 | |
9aecce1c IS |
2144 | if (!list_empty(&fib_node->entry_list)) |
2145 | return; | |
76610ebb | 2146 | mlxsw_sp_fib_node_fini(mlxsw_sp, fib_node); |
9aecce1c | 2147 | mlxsw_sp_fib_node_destroy(fib_node); |
76610ebb | 2148 | mlxsw_sp_vr_put(vr); |
61c503f9 JP |
2149 | } |
2150 | ||
9aecce1c IS |
2151 | static struct mlxsw_sp_fib_entry * |
2152 | mlxsw_sp_fib4_node_entry_find(const struct mlxsw_sp_fib_node *fib_node, | |
2153 | const struct mlxsw_sp_fib_entry_params *params) | |
61c503f9 | 2154 | { |
61c503f9 | 2155 | struct mlxsw_sp_fib_entry *fib_entry; |
9aecce1c IS |
2156 | |
2157 | list_for_each_entry(fib_entry, &fib_node->entry_list, list) { | |
2158 | if (fib_entry->params.tb_id > params->tb_id) | |
2159 | continue; | |
2160 | if (fib_entry->params.tb_id != params->tb_id) | |
2161 | break; | |
2162 | if (fib_entry->params.tos > params->tos) | |
2163 | continue; | |
2164 | if (fib_entry->params.prio >= params->prio || | |
2165 | fib_entry->params.tos < params->tos) | |
2166 | return fib_entry; | |
2167 | } | |
2168 | ||
2169 | return NULL; | |
2170 | } | |
2171 | ||
4283bce5 IS |
2172 | static int mlxsw_sp_fib4_node_list_append(struct mlxsw_sp_fib_entry *fib_entry, |
2173 | struct mlxsw_sp_fib_entry *new_entry) | |
2174 | { | |
2175 | struct mlxsw_sp_fib_node *fib_node; | |
2176 | ||
2177 | if (WARN_ON(!fib_entry)) | |
2178 | return -EINVAL; | |
2179 | ||
2180 | fib_node = fib_entry->fib_node; | |
2181 | list_for_each_entry_from(fib_entry, &fib_node->entry_list, list) { | |
2182 | if (fib_entry->params.tb_id != new_entry->params.tb_id || | |
2183 | fib_entry->params.tos != new_entry->params.tos || | |
2184 | fib_entry->params.prio != new_entry->params.prio) | |
2185 | break; | |
2186 | } | |
2187 | ||
2188 | list_add_tail(&new_entry->list, &fib_entry->list); | |
2189 | return 0; | |
2190 | } | |
2191 | ||
9aecce1c IS |
2192 | static int |
2193 | mlxsw_sp_fib4_node_list_insert(struct mlxsw_sp_fib_node *fib_node, | |
4283bce5 | 2194 | struct mlxsw_sp_fib_entry *new_entry, |
599cf8f9 | 2195 | bool replace, bool append) |
9aecce1c IS |
2196 | { |
2197 | struct mlxsw_sp_fib_entry *fib_entry; | |
2198 | ||
2199 | fib_entry = mlxsw_sp_fib4_node_entry_find(fib_node, &new_entry->params); | |
2200 | ||
4283bce5 IS |
2201 | if (append) |
2202 | return mlxsw_sp_fib4_node_list_append(fib_entry, new_entry); | |
599cf8f9 IS |
2203 | if (replace && WARN_ON(!fib_entry)) |
2204 | return -EINVAL; | |
4283bce5 | 2205 | |
599cf8f9 IS |
2206 | /* Insert new entry before replaced one, so that we can later |
2207 | * remove the second. | |
2208 | */ | |
9aecce1c IS |
2209 | if (fib_entry) { |
2210 | list_add_tail(&new_entry->list, &fib_entry->list); | |
2211 | } else { | |
2212 | struct mlxsw_sp_fib_entry *last; | |
2213 | ||
2214 | list_for_each_entry(last, &fib_node->entry_list, list) { | |
2215 | if (new_entry->params.tb_id > last->params.tb_id) | |
2216 | break; | |
2217 | fib_entry = last; | |
2218 | } | |
2219 | ||
2220 | if (fib_entry) | |
2221 | list_add(&new_entry->list, &fib_entry->list); | |
2222 | else | |
2223 | list_add(&new_entry->list, &fib_node->entry_list); | |
2224 | } | |
2225 | ||
2226 | return 0; | |
2227 | } | |
2228 | ||
2229 | static void | |
2230 | mlxsw_sp_fib4_node_list_remove(struct mlxsw_sp_fib_entry *fib_entry) | |
2231 | { | |
2232 | list_del(&fib_entry->list); | |
2233 | } | |
2234 | ||
2235 | static int | |
2236 | mlxsw_sp_fib4_node_entry_add(struct mlxsw_sp *mlxsw_sp, | |
2237 | const struct mlxsw_sp_fib_node *fib_node, | |
2238 | struct mlxsw_sp_fib_entry *fib_entry) | |
2239 | { | |
2240 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) | |
2241 | return 0; | |
2242 | ||
2243 | /* To prevent packet loss, overwrite the previously offloaded | |
2244 | * entry. | |
2245 | */ | |
2246 | if (!list_is_singular(&fib_node->entry_list)) { | |
2247 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
2248 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
2249 | ||
2250 | mlxsw_sp_fib_entry_offload_refresh(n, op, 0); | |
2251 | } | |
2252 | ||
2253 | return mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
2254 | } | |
2255 | ||
2256 | static void | |
2257 | mlxsw_sp_fib4_node_entry_del(struct mlxsw_sp *mlxsw_sp, | |
2258 | const struct mlxsw_sp_fib_node *fib_node, | |
2259 | struct mlxsw_sp_fib_entry *fib_entry) | |
2260 | { | |
2261 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) | |
2262 | return; | |
2263 | ||
2264 | /* Promote the next entry by overwriting the deleted entry */ | |
2265 | if (!list_is_singular(&fib_node->entry_list)) { | |
2266 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
2267 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
2268 | ||
2269 | mlxsw_sp_fib_entry_update(mlxsw_sp, n); | |
2270 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0); | |
2271 | return; | |
2272 | } | |
2273 | ||
2274 | mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry); | |
2275 | } | |
2276 | ||
2277 | static int mlxsw_sp_fib4_node_entry_link(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 2278 | struct mlxsw_sp_fib_entry *fib_entry, |
599cf8f9 | 2279 | bool replace, bool append) |
9aecce1c IS |
2280 | { |
2281 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2282 | int err; | |
2283 | ||
599cf8f9 IS |
2284 | err = mlxsw_sp_fib4_node_list_insert(fib_node, fib_entry, replace, |
2285 | append); | |
9aecce1c IS |
2286 | if (err) |
2287 | return err; | |
2288 | ||
2289 | err = mlxsw_sp_fib4_node_entry_add(mlxsw_sp, fib_node, fib_entry); | |
2290 | if (err) | |
2291 | goto err_fib4_node_entry_add; | |
2292 | ||
9aecce1c IS |
2293 | return 0; |
2294 | ||
2295 | err_fib4_node_entry_add: | |
2296 | mlxsw_sp_fib4_node_list_remove(fib_entry); | |
2297 | return err; | |
2298 | } | |
2299 | ||
2300 | static void | |
2301 | mlxsw_sp_fib4_node_entry_unlink(struct mlxsw_sp *mlxsw_sp, | |
2302 | struct mlxsw_sp_fib_entry *fib_entry) | |
2303 | { | |
2304 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2305 | ||
9aecce1c IS |
2306 | mlxsw_sp_fib4_node_entry_del(mlxsw_sp, fib_node, fib_entry); |
2307 | mlxsw_sp_fib4_node_list_remove(fib_entry); | |
2308 | } | |
2309 | ||
599cf8f9 IS |
2310 | static void mlxsw_sp_fib4_entry_replace(struct mlxsw_sp *mlxsw_sp, |
2311 | struct mlxsw_sp_fib_entry *fib_entry, | |
2312 | bool replace) | |
2313 | { | |
2314 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2315 | struct mlxsw_sp_fib_entry *replaced; | |
2316 | ||
2317 | if (!replace) | |
2318 | return; | |
2319 | ||
2320 | /* We inserted the new entry before replaced one */ | |
2321 | replaced = list_next_entry(fib_entry, list); | |
2322 | ||
2323 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, replaced); | |
2324 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, replaced); | |
2325 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
2326 | } | |
2327 | ||
9aecce1c IS |
2328 | static int |
2329 | mlxsw_sp_router_fib4_add(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 2330 | const struct fib_entry_notifier_info *fen_info, |
599cf8f9 | 2331 | bool replace, bool append) |
9aecce1c IS |
2332 | { |
2333 | struct mlxsw_sp_fib_entry *fib_entry; | |
2334 | struct mlxsw_sp_fib_node *fib_node; | |
61c503f9 JP |
2335 | int err; |
2336 | ||
b45f64d1 JP |
2337 | if (mlxsw_sp->router.aborted) |
2338 | return 0; | |
2339 | ||
9aecce1c IS |
2340 | fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info); |
2341 | if (IS_ERR(fib_node)) { | |
2342 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to get FIB node\n"); | |
2343 | return PTR_ERR(fib_node); | |
b45f64d1 | 2344 | } |
61c503f9 | 2345 | |
9aecce1c IS |
2346 | fib_entry = mlxsw_sp_fib4_entry_create(mlxsw_sp, fib_node, fen_info); |
2347 | if (IS_ERR(fib_entry)) { | |
2348 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to create FIB entry\n"); | |
2349 | err = PTR_ERR(fib_entry); | |
2350 | goto err_fib4_entry_create; | |
2351 | } | |
5b004412 | 2352 | |
599cf8f9 IS |
2353 | err = mlxsw_sp_fib4_node_entry_link(mlxsw_sp, fib_entry, replace, |
2354 | append); | |
b45f64d1 | 2355 | if (err) { |
9aecce1c IS |
2356 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to link FIB entry to node\n"); |
2357 | goto err_fib4_node_entry_link; | |
b45f64d1 | 2358 | } |
9aecce1c | 2359 | |
599cf8f9 IS |
2360 | mlxsw_sp_fib4_entry_replace(mlxsw_sp, fib_entry, replace); |
2361 | ||
61c503f9 JP |
2362 | return 0; |
2363 | ||
9aecce1c IS |
2364 | err_fib4_node_entry_link: |
2365 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2366 | err_fib4_entry_create: | |
2367 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
61c503f9 JP |
2368 | return err; |
2369 | } | |
2370 | ||
37956d78 JP |
2371 | static void mlxsw_sp_router_fib4_del(struct mlxsw_sp *mlxsw_sp, |
2372 | struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 2373 | { |
61c503f9 | 2374 | struct mlxsw_sp_fib_entry *fib_entry; |
9aecce1c | 2375 | struct mlxsw_sp_fib_node *fib_node; |
61c503f9 | 2376 | |
b45f64d1 | 2377 | if (mlxsw_sp->router.aborted) |
37956d78 | 2378 | return; |
b45f64d1 | 2379 | |
9aecce1c IS |
2380 | fib_entry = mlxsw_sp_fib4_entry_lookup(mlxsw_sp, fen_info); |
2381 | if (WARN_ON(!fib_entry)) | |
37956d78 | 2382 | return; |
9aecce1c | 2383 | fib_node = fib_entry->fib_node; |
5b004412 | 2384 | |
9aecce1c IS |
2385 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry); |
2386 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2387 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
61c503f9 | 2388 | } |
b45f64d1 JP |
2389 | |
2390 | static int mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp) | |
2391 | { | |
2392 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
2393 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
2394 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
2395 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
2396 | int err; | |
2397 | ||
2398 | mlxsw_reg_ralta_pack(ralta_pl, true, MLXSW_REG_RALXX_PROTOCOL_IPV4, | |
2399 | MLXSW_SP_LPM_TREE_MIN); | |
2400 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); | |
2401 | if (err) | |
2402 | return err; | |
2403 | ||
2404 | mlxsw_reg_ralst_pack(ralst_pl, 0xff, MLXSW_SP_LPM_TREE_MIN); | |
2405 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); | |
2406 | if (err) | |
2407 | return err; | |
2408 | ||
19271c1a JP |
2409 | mlxsw_reg_raltb_pack(raltb_pl, 0, MLXSW_REG_RALXX_PROTOCOL_IPV4, |
2410 | MLXSW_SP_LPM_TREE_MIN); | |
b45f64d1 JP |
2411 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
2412 | if (err) | |
2413 | return err; | |
2414 | ||
2415 | mlxsw_reg_ralue_pack4(ralue_pl, MLXSW_SP_L3_PROTO_IPV4, | |
2416 | MLXSW_REG_RALUE_OP_WRITE_WRITE, 0, 0, 0); | |
2417 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); | |
2418 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
2419 | } | |
2420 | ||
9aecce1c IS |
2421 | static void mlxsw_sp_fib4_node_flush(struct mlxsw_sp *mlxsw_sp, |
2422 | struct mlxsw_sp_fib_node *fib_node) | |
2423 | { | |
2424 | struct mlxsw_sp_fib_entry *fib_entry, *tmp; | |
2425 | ||
2426 | list_for_each_entry_safe(fib_entry, tmp, &fib_node->entry_list, list) { | |
2427 | bool do_break = &tmp->list == &fib_node->entry_list; | |
2428 | ||
2429 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry); | |
2430 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2431 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
2432 | /* Break when entry list is empty and node was freed. | |
2433 | * Otherwise, we'll access freed memory in the next | |
2434 | * iteration. | |
2435 | */ | |
2436 | if (do_break) | |
2437 | break; | |
2438 | } | |
2439 | } | |
2440 | ||
2441 | static void mlxsw_sp_fib_node_flush(struct mlxsw_sp *mlxsw_sp, | |
2442 | struct mlxsw_sp_fib_node *fib_node) | |
2443 | { | |
76610ebb | 2444 | switch (fib_node->fib->proto) { |
9aecce1c IS |
2445 | case MLXSW_SP_L3_PROTO_IPV4: |
2446 | mlxsw_sp_fib4_node_flush(mlxsw_sp, fib_node); | |
2447 | break; | |
2448 | case MLXSW_SP_L3_PROTO_IPV6: | |
2449 | WARN_ON_ONCE(1); | |
2450 | break; | |
2451 | } | |
2452 | } | |
2453 | ||
76610ebb IS |
2454 | static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp, |
2455 | struct mlxsw_sp_vr *vr, | |
2456 | enum mlxsw_sp_l3proto proto) | |
b45f64d1 | 2457 | { |
76610ebb | 2458 | struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); |
9aecce1c | 2459 | struct mlxsw_sp_fib_node *fib_node, *tmp; |
76610ebb IS |
2460 | |
2461 | list_for_each_entry_safe(fib_node, tmp, &fib->node_list, list) { | |
2462 | bool do_break = &tmp->list == &fib->node_list; | |
2463 | ||
2464 | mlxsw_sp_fib_node_flush(mlxsw_sp, fib_node); | |
2465 | if (do_break) | |
2466 | break; | |
2467 | } | |
2468 | } | |
2469 | ||
2470 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp) | |
2471 | { | |
b45f64d1 | 2472 | int i; |
b45f64d1 | 2473 | |
c1a38311 | 2474 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
76610ebb | 2475 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router.vrs[i]; |
ac571de9 | 2476 | |
76610ebb | 2477 | if (!mlxsw_sp_vr_is_used(vr)) |
b45f64d1 | 2478 | continue; |
76610ebb | 2479 | mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4); |
b45f64d1 | 2480 | } |
ac571de9 IS |
2481 | } |
2482 | ||
2483 | static void mlxsw_sp_router_fib4_abort(struct mlxsw_sp *mlxsw_sp) | |
2484 | { | |
2485 | int err; | |
2486 | ||
d331d303 IS |
2487 | if (mlxsw_sp->router.aborted) |
2488 | return; | |
2489 | dev_warn(mlxsw_sp->bus_info->dev, "FIB abort triggered. Note that FIB entries are no longer being offloaded to this device.\n"); | |
ac571de9 | 2490 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
b45f64d1 JP |
2491 | mlxsw_sp->router.aborted = true; |
2492 | err = mlxsw_sp_router_set_abort_trap(mlxsw_sp); | |
2493 | if (err) | |
2494 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set abort trap.\n"); | |
2495 | } | |
2496 | ||
3057224e | 2497 | struct mlxsw_sp_fib_event_work { |
a0e4761d | 2498 | struct work_struct work; |
ad178c8e IS |
2499 | union { |
2500 | struct fib_entry_notifier_info fen_info; | |
2501 | struct fib_nh_notifier_info fnh_info; | |
2502 | }; | |
3057224e IS |
2503 | struct mlxsw_sp *mlxsw_sp; |
2504 | unsigned long event; | |
2505 | }; | |
2506 | ||
2507 | static void mlxsw_sp_router_fib_event_work(struct work_struct *work) | |
b45f64d1 | 2508 | { |
3057224e | 2509 | struct mlxsw_sp_fib_event_work *fib_work = |
a0e4761d | 2510 | container_of(work, struct mlxsw_sp_fib_event_work, work); |
3057224e | 2511 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; |
599cf8f9 | 2512 | bool replace, append; |
b45f64d1 JP |
2513 | int err; |
2514 | ||
3057224e IS |
2515 | /* Protect internal structures from changes */ |
2516 | rtnl_lock(); | |
2517 | switch (fib_work->event) { | |
599cf8f9 | 2518 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 2519 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
b45f64d1 | 2520 | case FIB_EVENT_ENTRY_ADD: |
599cf8f9 | 2521 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; |
4283bce5 IS |
2522 | append = fib_work->event == FIB_EVENT_ENTRY_APPEND; |
2523 | err = mlxsw_sp_router_fib4_add(mlxsw_sp, &fib_work->fen_info, | |
599cf8f9 | 2524 | replace, append); |
b45f64d1 JP |
2525 | if (err) |
2526 | mlxsw_sp_router_fib4_abort(mlxsw_sp); | |
3057224e | 2527 | fib_info_put(fib_work->fen_info.fi); |
b45f64d1 JP |
2528 | break; |
2529 | case FIB_EVENT_ENTRY_DEL: | |
3057224e IS |
2530 | mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info); |
2531 | fib_info_put(fib_work->fen_info.fi); | |
b45f64d1 JP |
2532 | break; |
2533 | case FIB_EVENT_RULE_ADD: /* fall through */ | |
2534 | case FIB_EVENT_RULE_DEL: | |
2535 | mlxsw_sp_router_fib4_abort(mlxsw_sp); | |
2536 | break; | |
ad178c8e IS |
2537 | case FIB_EVENT_NH_ADD: /* fall through */ |
2538 | case FIB_EVENT_NH_DEL: | |
2539 | mlxsw_sp_nexthop_event(mlxsw_sp, fib_work->event, | |
2540 | fib_work->fnh_info.fib_nh); | |
2541 | fib_info_put(fib_work->fnh_info.fib_nh->nh_parent); | |
2542 | break; | |
b45f64d1 | 2543 | } |
3057224e IS |
2544 | rtnl_unlock(); |
2545 | kfree(fib_work); | |
2546 | } | |
2547 | ||
2548 | /* Called with rcu_read_lock() */ | |
2549 | static int mlxsw_sp_router_fib_event(struct notifier_block *nb, | |
2550 | unsigned long event, void *ptr) | |
2551 | { | |
2552 | struct mlxsw_sp *mlxsw_sp = container_of(nb, struct mlxsw_sp, fib_nb); | |
2553 | struct mlxsw_sp_fib_event_work *fib_work; | |
2554 | struct fib_notifier_info *info = ptr; | |
2555 | ||
2556 | if (!net_eq(info->net, &init_net)) | |
2557 | return NOTIFY_DONE; | |
2558 | ||
2559 | fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC); | |
2560 | if (WARN_ON(!fib_work)) | |
2561 | return NOTIFY_BAD; | |
2562 | ||
a0e4761d | 2563 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fib_event_work); |
3057224e IS |
2564 | fib_work->mlxsw_sp = mlxsw_sp; |
2565 | fib_work->event = event; | |
2566 | ||
2567 | switch (event) { | |
599cf8f9 | 2568 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 2569 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
3057224e IS |
2570 | case FIB_EVENT_ENTRY_ADD: /* fall through */ |
2571 | case FIB_EVENT_ENTRY_DEL: | |
2572 | memcpy(&fib_work->fen_info, ptr, sizeof(fib_work->fen_info)); | |
2573 | /* Take referece on fib_info to prevent it from being | |
2574 | * freed while work is queued. Release it afterwards. | |
2575 | */ | |
2576 | fib_info_hold(fib_work->fen_info.fi); | |
2577 | break; | |
ad178c8e IS |
2578 | case FIB_EVENT_NH_ADD: /* fall through */ |
2579 | case FIB_EVENT_NH_DEL: | |
2580 | memcpy(&fib_work->fnh_info, ptr, sizeof(fib_work->fnh_info)); | |
2581 | fib_info_hold(fib_work->fnh_info.fib_nh->nh_parent); | |
2582 | break; | |
3057224e IS |
2583 | } |
2584 | ||
a0e4761d | 2585 | mlxsw_core_schedule_work(&fib_work->work); |
3057224e | 2586 | |
b45f64d1 JP |
2587 | return NOTIFY_DONE; |
2588 | } | |
2589 | ||
4724ba56 IS |
2590 | static struct mlxsw_sp_rif * |
2591 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
2592 | const struct net_device *dev) | |
2593 | { | |
2594 | int i; | |
2595 | ||
2596 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
2597 | if (mlxsw_sp->rifs[i] && mlxsw_sp->rifs[i]->dev == dev) | |
2598 | return mlxsw_sp->rifs[i]; | |
2599 | ||
2600 | return NULL; | |
2601 | } | |
2602 | ||
2603 | static int mlxsw_sp_router_rif_disable(struct mlxsw_sp *mlxsw_sp, u16 rif) | |
2604 | { | |
2605 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
2606 | int err; | |
2607 | ||
2608 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif); | |
2609 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2610 | if (WARN_ON_ONCE(err)) | |
2611 | return err; | |
2612 | ||
2613 | mlxsw_reg_ritr_enable_set(ritr_pl, false); | |
2614 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2615 | } | |
2616 | ||
2617 | static void mlxsw_sp_router_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
2618 | struct mlxsw_sp_rif *r) | |
2619 | { | |
2620 | mlxsw_sp_router_rif_disable(mlxsw_sp, r->rif); | |
2621 | mlxsw_sp_nexthop_rif_gone_sync(mlxsw_sp, r); | |
2622 | mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, r); | |
2623 | } | |
2624 | ||
2625 | static bool mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *r, | |
2626 | const struct in_device *in_dev, | |
2627 | unsigned long event) | |
2628 | { | |
2629 | switch (event) { | |
2630 | case NETDEV_UP: | |
2631 | if (!r) | |
2632 | return true; | |
2633 | return false; | |
2634 | case NETDEV_DOWN: | |
2635 | if (r && !in_dev->ifa_list) | |
2636 | return true; | |
2637 | /* It is possible we already removed the RIF ourselves | |
2638 | * if it was assigned to a netdev that is now a bridge | |
2639 | * or LAG slave. | |
2640 | */ | |
2641 | return false; | |
2642 | } | |
2643 | ||
2644 | return false; | |
2645 | } | |
2646 | ||
2647 | #define MLXSW_SP_INVALID_RIF 0xffff | |
2648 | static int mlxsw_sp_avail_rif_get(struct mlxsw_sp *mlxsw_sp) | |
2649 | { | |
2650 | int i; | |
2651 | ||
2652 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
2653 | if (!mlxsw_sp->rifs[i]) | |
2654 | return i; | |
2655 | ||
2656 | return MLXSW_SP_INVALID_RIF; | |
2657 | } | |
2658 | ||
2659 | static void mlxsw_sp_vport_rif_sp_attr_get(struct mlxsw_sp_port *mlxsw_sp_vport, | |
2660 | bool *p_lagged, u16 *p_system_port) | |
2661 | { | |
2662 | u8 local_port = mlxsw_sp_vport->local_port; | |
2663 | ||
2664 | *p_lagged = mlxsw_sp_vport->lagged; | |
2665 | *p_system_port = *p_lagged ? mlxsw_sp_vport->lag_id : local_port; | |
2666 | } | |
2667 | ||
2668 | static int mlxsw_sp_vport_rif_sp_op(struct mlxsw_sp_port *mlxsw_sp_vport, | |
2669 | struct net_device *l3_dev, u16 rif, | |
2670 | bool create) | |
2671 | { | |
2672 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
2673 | bool lagged = mlxsw_sp_vport->lagged; | |
2674 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
2675 | u16 system_port; | |
2676 | ||
2677 | mlxsw_reg_ritr_pack(ritr_pl, create, MLXSW_REG_RITR_SP_IF, rif, | |
2678 | l3_dev->mtu, l3_dev->dev_addr); | |
2679 | ||
2680 | mlxsw_sp_vport_rif_sp_attr_get(mlxsw_sp_vport, &lagged, &system_port); | |
2681 | mlxsw_reg_ritr_sp_if_pack(ritr_pl, lagged, system_port, | |
2682 | mlxsw_sp_vport_vid_get(mlxsw_sp_vport)); | |
2683 | ||
2684 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2685 | } | |
2686 | ||
2687 | static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport); | |
2688 | ||
2689 | static u16 mlxsw_sp_rif_sp_to_fid(u16 rif) | |
2690 | { | |
2691 | return MLXSW_SP_RFID_BASE + rif; | |
2692 | } | |
2693 | ||
2694 | static struct mlxsw_sp_fid * | |
2695 | mlxsw_sp_rfid_alloc(u16 fid, struct net_device *l3_dev) | |
2696 | { | |
2697 | struct mlxsw_sp_fid *f; | |
2698 | ||
2699 | f = kzalloc(sizeof(*f), GFP_KERNEL); | |
2700 | if (!f) | |
2701 | return NULL; | |
2702 | ||
2703 | f->leave = mlxsw_sp_vport_rif_sp_leave; | |
2704 | f->ref_count = 0; | |
2705 | f->dev = l3_dev; | |
2706 | f->fid = fid; | |
2707 | ||
2708 | return f; | |
2709 | } | |
2710 | ||
2711 | static struct mlxsw_sp_rif * | |
2712 | mlxsw_sp_rif_alloc(u16 rif, struct net_device *l3_dev, struct mlxsw_sp_fid *f) | |
2713 | { | |
2714 | struct mlxsw_sp_rif *r; | |
2715 | ||
2716 | r = kzalloc(sizeof(*r), GFP_KERNEL); | |
2717 | if (!r) | |
2718 | return NULL; | |
2719 | ||
2720 | INIT_LIST_HEAD(&r->nexthop_list); | |
2721 | INIT_LIST_HEAD(&r->neigh_list); | |
2722 | ether_addr_copy(r->addr, l3_dev->dev_addr); | |
2723 | r->mtu = l3_dev->mtu; | |
2724 | r->dev = l3_dev; | |
2725 | r->rif = rif; | |
2726 | r->f = f; | |
2727 | ||
2728 | return r; | |
2729 | } | |
2730 | ||
2731 | static struct mlxsw_sp_rif * | |
2732 | mlxsw_sp_vport_rif_sp_create(struct mlxsw_sp_port *mlxsw_sp_vport, | |
2733 | struct net_device *l3_dev) | |
2734 | { | |
2735 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
2736 | struct mlxsw_sp_fid *f; | |
2737 | struct mlxsw_sp_rif *r; | |
2738 | u16 fid, rif; | |
2739 | int err; | |
2740 | ||
2741 | rif = mlxsw_sp_avail_rif_get(mlxsw_sp); | |
2742 | if (rif == MLXSW_SP_INVALID_RIF) | |
2743 | return ERR_PTR(-ERANGE); | |
2744 | ||
2745 | err = mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, true); | |
2746 | if (err) | |
2747 | return ERR_PTR(err); | |
2748 | ||
2749 | fid = mlxsw_sp_rif_sp_to_fid(rif); | |
2750 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, true); | |
2751 | if (err) | |
2752 | goto err_rif_fdb_op; | |
2753 | ||
2754 | f = mlxsw_sp_rfid_alloc(fid, l3_dev); | |
2755 | if (!f) { | |
2756 | err = -ENOMEM; | |
2757 | goto err_rfid_alloc; | |
2758 | } | |
2759 | ||
2760 | r = mlxsw_sp_rif_alloc(rif, l3_dev, f); | |
2761 | if (!r) { | |
2762 | err = -ENOMEM; | |
2763 | goto err_rif_alloc; | |
2764 | } | |
2765 | ||
2766 | f->r = r; | |
2767 | mlxsw_sp->rifs[rif] = r; | |
2768 | ||
2769 | return r; | |
2770 | ||
2771 | err_rif_alloc: | |
2772 | kfree(f); | |
2773 | err_rfid_alloc: | |
2774 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false); | |
2775 | err_rif_fdb_op: | |
2776 | mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, false); | |
2777 | return ERR_PTR(err); | |
2778 | } | |
2779 | ||
2780 | static void mlxsw_sp_vport_rif_sp_destroy(struct mlxsw_sp_port *mlxsw_sp_vport, | |
2781 | struct mlxsw_sp_rif *r) | |
2782 | { | |
2783 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
2784 | struct net_device *l3_dev = r->dev; | |
2785 | struct mlxsw_sp_fid *f = r->f; | |
2786 | u16 fid = f->fid; | |
2787 | u16 rif = r->rif; | |
2788 | ||
2789 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, r); | |
2790 | ||
2791 | mlxsw_sp->rifs[rif] = NULL; | |
2792 | f->r = NULL; | |
2793 | ||
2794 | kfree(r); | |
2795 | ||
2796 | kfree(f); | |
2797 | ||
2798 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false); | |
2799 | ||
2800 | mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, false); | |
2801 | } | |
2802 | ||
2803 | static int mlxsw_sp_vport_rif_sp_join(struct mlxsw_sp_port *mlxsw_sp_vport, | |
2804 | struct net_device *l3_dev) | |
2805 | { | |
2806 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
2807 | struct mlxsw_sp_rif *r; | |
2808 | ||
2809 | r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); | |
2810 | if (!r) { | |
2811 | r = mlxsw_sp_vport_rif_sp_create(mlxsw_sp_vport, l3_dev); | |
2812 | if (IS_ERR(r)) | |
2813 | return PTR_ERR(r); | |
2814 | } | |
2815 | ||
2816 | mlxsw_sp_vport_fid_set(mlxsw_sp_vport, r->f); | |
2817 | r->f->ref_count++; | |
2818 | ||
2819 | netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", r->f->fid); | |
2820 | ||
2821 | return 0; | |
2822 | } | |
2823 | ||
2824 | static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport) | |
2825 | { | |
2826 | struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport); | |
2827 | ||
2828 | netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid); | |
2829 | ||
2830 | mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL); | |
2831 | if (--f->ref_count == 0) | |
2832 | mlxsw_sp_vport_rif_sp_destroy(mlxsw_sp_vport, f->r); | |
2833 | } | |
2834 | ||
2835 | static int mlxsw_sp_inetaddr_vport_event(struct net_device *l3_dev, | |
2836 | struct net_device *port_dev, | |
2837 | unsigned long event, u16 vid) | |
2838 | { | |
2839 | struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev); | |
2840 | struct mlxsw_sp_port *mlxsw_sp_vport; | |
2841 | ||
2842 | mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid); | |
2843 | if (WARN_ON(!mlxsw_sp_vport)) | |
2844 | return -EINVAL; | |
2845 | ||
2846 | switch (event) { | |
2847 | case NETDEV_UP: | |
2848 | return mlxsw_sp_vport_rif_sp_join(mlxsw_sp_vport, l3_dev); | |
2849 | case NETDEV_DOWN: | |
2850 | mlxsw_sp_vport_rif_sp_leave(mlxsw_sp_vport); | |
2851 | break; | |
2852 | } | |
2853 | ||
2854 | return 0; | |
2855 | } | |
2856 | ||
2857 | static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev, | |
2858 | unsigned long event) | |
2859 | { | |
2860 | if (netif_is_bridge_port(port_dev) || netif_is_lag_port(port_dev)) | |
2861 | return 0; | |
2862 | ||
2863 | return mlxsw_sp_inetaddr_vport_event(port_dev, port_dev, event, 1); | |
2864 | } | |
2865 | ||
2866 | static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev, | |
2867 | struct net_device *lag_dev, | |
2868 | unsigned long event, u16 vid) | |
2869 | { | |
2870 | struct net_device *port_dev; | |
2871 | struct list_head *iter; | |
2872 | int err; | |
2873 | ||
2874 | netdev_for_each_lower_dev(lag_dev, port_dev, iter) { | |
2875 | if (mlxsw_sp_port_dev_check(port_dev)) { | |
2876 | err = mlxsw_sp_inetaddr_vport_event(l3_dev, port_dev, | |
2877 | event, vid); | |
2878 | if (err) | |
2879 | return err; | |
2880 | } | |
2881 | } | |
2882 | ||
2883 | return 0; | |
2884 | } | |
2885 | ||
2886 | static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev, | |
2887 | unsigned long event) | |
2888 | { | |
2889 | if (netif_is_bridge_port(lag_dev)) | |
2890 | return 0; | |
2891 | ||
2892 | return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1); | |
2893 | } | |
2894 | ||
2895 | static struct mlxsw_sp_fid *mlxsw_sp_bridge_fid_get(struct mlxsw_sp *mlxsw_sp, | |
2896 | struct net_device *l3_dev) | |
2897 | { | |
2898 | u16 fid; | |
2899 | ||
2900 | if (is_vlan_dev(l3_dev)) | |
2901 | fid = vlan_dev_vlan_id(l3_dev); | |
2902 | else if (mlxsw_sp->master_bridge.dev == l3_dev) | |
2903 | fid = 1; | |
2904 | else | |
2905 | return mlxsw_sp_vfid_find(mlxsw_sp, l3_dev); | |
2906 | ||
2907 | return mlxsw_sp_fid_find(mlxsw_sp, fid); | |
2908 | } | |
2909 | ||
2910 | static enum mlxsw_flood_table_type mlxsw_sp_flood_table_type_get(u16 fid) | |
2911 | { | |
2912 | return mlxsw_sp_fid_is_vfid(fid) ? MLXSW_REG_SFGC_TABLE_TYPE_FID : | |
2913 | MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST; | |
2914 | } | |
2915 | ||
2916 | static u16 mlxsw_sp_flood_table_index_get(u16 fid) | |
2917 | { | |
2918 | return mlxsw_sp_fid_is_vfid(fid) ? mlxsw_sp_fid_to_vfid(fid) : fid; | |
2919 | } | |
2920 | ||
2921 | static int mlxsw_sp_router_port_flood_set(struct mlxsw_sp *mlxsw_sp, u16 fid, | |
2922 | bool set) | |
2923 | { | |
2924 | enum mlxsw_flood_table_type table_type; | |
2925 | char *sftr_pl; | |
2926 | u16 index; | |
2927 | int err; | |
2928 | ||
2929 | sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL); | |
2930 | if (!sftr_pl) | |
2931 | return -ENOMEM; | |
2932 | ||
2933 | table_type = mlxsw_sp_flood_table_type_get(fid); | |
2934 | index = mlxsw_sp_flood_table_index_get(fid); | |
2935 | mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BC, index, table_type, | |
2936 | 1, MLXSW_PORT_ROUTER_PORT, set); | |
2937 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); | |
2938 | ||
2939 | kfree(sftr_pl); | |
2940 | return err; | |
2941 | } | |
2942 | ||
2943 | static enum mlxsw_reg_ritr_if_type mlxsw_sp_rif_type_get(u16 fid) | |
2944 | { | |
2945 | if (mlxsw_sp_fid_is_vfid(fid)) | |
2946 | return MLXSW_REG_RITR_FID_IF; | |
2947 | else | |
2948 | return MLXSW_REG_RITR_VLAN_IF; | |
2949 | } | |
2950 | ||
2951 | static int mlxsw_sp_rif_bridge_op(struct mlxsw_sp *mlxsw_sp, | |
2952 | struct net_device *l3_dev, | |
2953 | u16 fid, u16 rif, | |
2954 | bool create) | |
2955 | { | |
2956 | enum mlxsw_reg_ritr_if_type rif_type; | |
2957 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
2958 | ||
2959 | rif_type = mlxsw_sp_rif_type_get(fid); | |
2960 | mlxsw_reg_ritr_pack(ritr_pl, create, rif_type, rif, l3_dev->mtu, | |
2961 | l3_dev->dev_addr); | |
2962 | mlxsw_reg_ritr_fid_set(ritr_pl, rif_type, fid); | |
2963 | ||
2964 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2965 | } | |
2966 | ||
2967 | static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp, | |
2968 | struct net_device *l3_dev, | |
2969 | struct mlxsw_sp_fid *f) | |
2970 | { | |
2971 | struct mlxsw_sp_rif *r; | |
2972 | u16 rif; | |
2973 | int err; | |
2974 | ||
2975 | rif = mlxsw_sp_avail_rif_get(mlxsw_sp); | |
2976 | if (rif == MLXSW_SP_INVALID_RIF) | |
2977 | return -ERANGE; | |
2978 | ||
2979 | err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true); | |
2980 | if (err) | |
2981 | return err; | |
2982 | ||
2983 | err = mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, true); | |
2984 | if (err) | |
2985 | goto err_rif_bridge_op; | |
2986 | ||
2987 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, true); | |
2988 | if (err) | |
2989 | goto err_rif_fdb_op; | |
2990 | ||
2991 | r = mlxsw_sp_rif_alloc(rif, l3_dev, f); | |
2992 | if (!r) { | |
2993 | err = -ENOMEM; | |
2994 | goto err_rif_alloc; | |
2995 | } | |
2996 | ||
2997 | f->r = r; | |
2998 | mlxsw_sp->rifs[rif] = r; | |
2999 | ||
3000 | netdev_dbg(l3_dev, "RIF=%d created\n", rif); | |
3001 | ||
3002 | return 0; | |
3003 | ||
3004 | err_rif_alloc: | |
3005 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false); | |
3006 | err_rif_fdb_op: | |
3007 | mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false); | |
3008 | err_rif_bridge_op: | |
3009 | mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); | |
3010 | return err; | |
3011 | } | |
3012 | ||
3013 | void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp, | |
3014 | struct mlxsw_sp_rif *r) | |
3015 | { | |
3016 | struct net_device *l3_dev = r->dev; | |
3017 | struct mlxsw_sp_fid *f = r->f; | |
3018 | u16 rif = r->rif; | |
3019 | ||
3020 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, r); | |
3021 | ||
3022 | mlxsw_sp->rifs[rif] = NULL; | |
3023 | f->r = NULL; | |
3024 | ||
3025 | kfree(r); | |
3026 | ||
3027 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false); | |
3028 | ||
3029 | mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false); | |
3030 | ||
3031 | mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); | |
3032 | ||
3033 | netdev_dbg(l3_dev, "RIF=%d destroyed\n", rif); | |
3034 | } | |
3035 | ||
3036 | static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev, | |
3037 | struct net_device *br_dev, | |
3038 | unsigned long event) | |
3039 | { | |
3040 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); | |
3041 | struct mlxsw_sp_fid *f; | |
3042 | ||
3043 | /* FID can either be an actual FID if the L3 device is the | |
3044 | * VLAN-aware bridge or a VLAN device on top. Otherwise, the | |
3045 | * L3 device is a VLAN-unaware bridge and we get a vFID. | |
3046 | */ | |
3047 | f = mlxsw_sp_bridge_fid_get(mlxsw_sp, l3_dev); | |
3048 | if (WARN_ON(!f)) | |
3049 | return -EINVAL; | |
3050 | ||
3051 | switch (event) { | |
3052 | case NETDEV_UP: | |
3053 | return mlxsw_sp_rif_bridge_create(mlxsw_sp, l3_dev, f); | |
3054 | case NETDEV_DOWN: | |
3055 | mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r); | |
3056 | break; | |
3057 | } | |
3058 | ||
3059 | return 0; | |
3060 | } | |
3061 | ||
3062 | static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev, | |
3063 | unsigned long event) | |
3064 | { | |
3065 | struct net_device *real_dev = vlan_dev_real_dev(vlan_dev); | |
3066 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(vlan_dev); | |
3067 | u16 vid = vlan_dev_vlan_id(vlan_dev); | |
3068 | ||
3069 | if (mlxsw_sp_port_dev_check(real_dev)) | |
3070 | return mlxsw_sp_inetaddr_vport_event(vlan_dev, real_dev, event, | |
3071 | vid); | |
3072 | else if (netif_is_lag_master(real_dev)) | |
3073 | return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event, | |
3074 | vid); | |
3075 | else if (netif_is_bridge_master(real_dev) && | |
3076 | mlxsw_sp->master_bridge.dev == real_dev) | |
3077 | return mlxsw_sp_inetaddr_bridge_event(vlan_dev, real_dev, | |
3078 | event); | |
3079 | ||
3080 | return 0; | |
3081 | } | |
3082 | ||
3083 | int mlxsw_sp_inetaddr_event(struct notifier_block *unused, | |
3084 | unsigned long event, void *ptr) | |
3085 | { | |
3086 | struct in_ifaddr *ifa = (struct in_ifaddr *) ptr; | |
3087 | struct net_device *dev = ifa->ifa_dev->dev; | |
3088 | struct mlxsw_sp *mlxsw_sp; | |
3089 | struct mlxsw_sp_rif *r; | |
3090 | int err = 0; | |
3091 | ||
3092 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
3093 | if (!mlxsw_sp) | |
3094 | goto out; | |
3095 | ||
3096 | r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
3097 | if (!mlxsw_sp_rif_should_config(r, ifa->ifa_dev, event)) | |
3098 | goto out; | |
3099 | ||
3100 | if (mlxsw_sp_port_dev_check(dev)) | |
3101 | err = mlxsw_sp_inetaddr_port_event(dev, event); | |
3102 | else if (netif_is_lag_master(dev)) | |
3103 | err = mlxsw_sp_inetaddr_lag_event(dev, event); | |
3104 | else if (netif_is_bridge_master(dev)) | |
3105 | err = mlxsw_sp_inetaddr_bridge_event(dev, dev, event); | |
3106 | else if (is_vlan_dev(dev)) | |
3107 | err = mlxsw_sp_inetaddr_vlan_event(dev, event); | |
3108 | ||
3109 | out: | |
3110 | return notifier_from_errno(err); | |
3111 | } | |
3112 | ||
3113 | static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif, | |
3114 | const char *mac, int mtu) | |
3115 | { | |
3116 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
3117 | int err; | |
3118 | ||
3119 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif); | |
3120 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
3121 | if (err) | |
3122 | return err; | |
3123 | ||
3124 | mlxsw_reg_ritr_mtu_set(ritr_pl, mtu); | |
3125 | mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac); | |
3126 | mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE); | |
3127 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
3128 | } | |
3129 | ||
3130 | int mlxsw_sp_netdevice_router_port_event(struct net_device *dev) | |
3131 | { | |
3132 | struct mlxsw_sp *mlxsw_sp; | |
3133 | struct mlxsw_sp_rif *r; | |
3134 | int err; | |
3135 | ||
3136 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
3137 | if (!mlxsw_sp) | |
3138 | return 0; | |
3139 | ||
3140 | r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); | |
3141 | if (!r) | |
3142 | return 0; | |
3143 | ||
3144 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, r->addr, r->f->fid, false); | |
3145 | if (err) | |
3146 | return err; | |
3147 | ||
3148 | err = mlxsw_sp_rif_edit(mlxsw_sp, r->rif, dev->dev_addr, dev->mtu); | |
3149 | if (err) | |
3150 | goto err_rif_edit; | |
3151 | ||
3152 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, r->f->fid, true); | |
3153 | if (err) | |
3154 | goto err_rif_fdb_op; | |
3155 | ||
3156 | ether_addr_copy(r->addr, dev->dev_addr); | |
3157 | r->mtu = dev->mtu; | |
3158 | ||
3159 | netdev_dbg(dev, "Updated RIF=%d\n", r->rif); | |
3160 | ||
3161 | return 0; | |
3162 | ||
3163 | err_rif_fdb_op: | |
3164 | mlxsw_sp_rif_edit(mlxsw_sp, r->rif, r->addr, r->mtu); | |
3165 | err_rif_edit: | |
3166 | mlxsw_sp_rif_fdb_op(mlxsw_sp, r->addr, r->f->fid, true); | |
3167 | return err; | |
3168 | } | |
3169 | ||
c3852ef7 IS |
3170 | static void mlxsw_sp_router_fib_dump_flush(struct notifier_block *nb) |
3171 | { | |
3172 | struct mlxsw_sp *mlxsw_sp = container_of(nb, struct mlxsw_sp, fib_nb); | |
3173 | ||
3174 | /* Flush pending FIB notifications and then flush the device's | |
3175 | * table before requesting another dump. The FIB notification | |
3176 | * block is unregistered, so no need to take RTNL. | |
3177 | */ | |
3178 | mlxsw_core_flush_owq(); | |
3179 | mlxsw_sp_router_fib_flush(mlxsw_sp); | |
3180 | } | |
3181 | ||
4724ba56 IS |
3182 | static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
3183 | { | |
3184 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
3185 | u64 max_rifs; | |
3186 | int err; | |
3187 | ||
3188 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS)) | |
3189 | return -EIO; | |
3190 | ||
3191 | max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); | |
3192 | mlxsw_sp->rifs = kcalloc(max_rifs, sizeof(struct mlxsw_sp_rif *), | |
3193 | GFP_KERNEL); | |
3194 | if (!mlxsw_sp->rifs) | |
3195 | return -ENOMEM; | |
3196 | ||
3197 | mlxsw_reg_rgcr_pack(rgcr_pl, true); | |
3198 | mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs); | |
3199 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
3200 | if (err) | |
3201 | goto err_rgcr_fail; | |
3202 | ||
3203 | return 0; | |
3204 | ||
3205 | err_rgcr_fail: | |
3206 | kfree(mlxsw_sp->rifs); | |
3207 | return err; | |
3208 | } | |
3209 | ||
3210 | static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
3211 | { | |
3212 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
3213 | int i; | |
3214 | ||
3215 | mlxsw_reg_rgcr_pack(rgcr_pl, false); | |
3216 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
3217 | ||
3218 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
3219 | WARN_ON_ONCE(mlxsw_sp->rifs[i]); | |
3220 | ||
3221 | kfree(mlxsw_sp->rifs); | |
3222 | } | |
3223 | ||
b45f64d1 JP |
3224 | int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
3225 | { | |
3226 | int err; | |
3227 | ||
3228 | INIT_LIST_HEAD(&mlxsw_sp->router.nexthop_neighs_list); | |
b45f64d1 JP |
3229 | err = __mlxsw_sp_router_init(mlxsw_sp); |
3230 | if (err) | |
3231 | return err; | |
3232 | ||
c53b8e1b IS |
3233 | err = rhashtable_init(&mlxsw_sp->router.nexthop_ht, |
3234 | &mlxsw_sp_nexthop_ht_params); | |
3235 | if (err) | |
3236 | goto err_nexthop_ht_init; | |
3237 | ||
e9ad5e7d IS |
3238 | err = rhashtable_init(&mlxsw_sp->router.nexthop_group_ht, |
3239 | &mlxsw_sp_nexthop_group_ht_params); | |
3240 | if (err) | |
3241 | goto err_nexthop_group_ht_init; | |
3242 | ||
b45f64d1 JP |
3243 | mlxsw_sp_lpm_init(mlxsw_sp); |
3244 | err = mlxsw_sp_vrs_init(mlxsw_sp); | |
3245 | if (err) | |
3246 | goto err_vrs_init; | |
3247 | ||
8c9583a8 | 3248 | err = mlxsw_sp_neigh_init(mlxsw_sp); |
b45f64d1 JP |
3249 | if (err) |
3250 | goto err_neigh_init; | |
3251 | ||
3252 | mlxsw_sp->fib_nb.notifier_call = mlxsw_sp_router_fib_event; | |
c3852ef7 IS |
3253 | err = register_fib_notifier(&mlxsw_sp->fib_nb, |
3254 | mlxsw_sp_router_fib_dump_flush); | |
3255 | if (err) | |
3256 | goto err_register_fib_notifier; | |
3257 | ||
b45f64d1 JP |
3258 | return 0; |
3259 | ||
c3852ef7 IS |
3260 | err_register_fib_notifier: |
3261 | mlxsw_sp_neigh_fini(mlxsw_sp); | |
b45f64d1 JP |
3262 | err_neigh_init: |
3263 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
3264 | err_vrs_init: | |
e9ad5e7d IS |
3265 | rhashtable_destroy(&mlxsw_sp->router.nexthop_group_ht); |
3266 | err_nexthop_group_ht_init: | |
c53b8e1b IS |
3267 | rhashtable_destroy(&mlxsw_sp->router.nexthop_ht); |
3268 | err_nexthop_ht_init: | |
b45f64d1 JP |
3269 | __mlxsw_sp_router_fini(mlxsw_sp); |
3270 | return err; | |
3271 | } | |
3272 | ||
3273 | void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
3274 | { | |
3275 | unregister_fib_notifier(&mlxsw_sp->fib_nb); | |
3276 | mlxsw_sp_neigh_fini(mlxsw_sp); | |
3277 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
e9ad5e7d | 3278 | rhashtable_destroy(&mlxsw_sp->router.nexthop_group_ht); |
c53b8e1b | 3279 | rhashtable_destroy(&mlxsw_sp->router.nexthop_ht); |
b45f64d1 JP |
3280 | __mlxsw_sp_router_fini(mlxsw_sp); |
3281 | } |