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464dce18 IS |
1 | /* |
2 | * drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | |
3 | * Copyright (c) 2016 Mellanox Technologies. All rights reserved. | |
4 | * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> | |
5 | * Copyright (c) 2016 Ido Schimmel <idosch@mellanox.com> | |
c723c735 | 6 | * Copyright (c) 2016 Yotam Gigi <yotamg@mellanox.com> |
464dce18 IS |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions are met: | |
10 | * | |
11 | * 1. Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * 3. Neither the names of the copyright holders nor the names of its | |
17 | * contributors may be used to endorse or promote products derived from | |
18 | * this software without specific prior written permission. | |
19 | * | |
20 | * Alternatively, this software may be distributed under the terms of the | |
21 | * GNU General Public License ("GPL") version 2 as published by the Free | |
22 | * Software Foundation. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
28 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
34 | * POSSIBILITY OF SUCH DAMAGE. | |
35 | */ | |
36 | ||
37 | #include <linux/kernel.h> | |
38 | #include <linux/types.h> | |
5e9c16cc JP |
39 | #include <linux/rhashtable.h> |
40 | #include <linux/bitops.h> | |
41 | #include <linux/in6.h> | |
c723c735 | 42 | #include <linux/notifier.h> |
df6dd79b | 43 | #include <linux/inetdevice.h> |
9db032bb | 44 | #include <linux/netdevice.h> |
03ea01e9 | 45 | #include <linux/if_bridge.h> |
c723c735 | 46 | #include <net/netevent.h> |
6cf3c971 JP |
47 | #include <net/neighbour.h> |
48 | #include <net/arp.h> | |
b45f64d1 | 49 | #include <net/ip_fib.h> |
5d7bfd14 | 50 | #include <net/fib_rules.h> |
57837885 | 51 | #include <net/l3mdev.h> |
464dce18 IS |
52 | |
53 | #include "spectrum.h" | |
54 | #include "core.h" | |
55 | #include "reg.h" | |
e0c0afd8 AS |
56 | #include "spectrum_cnt.h" |
57 | #include "spectrum_dpipe.h" | |
58 | #include "spectrum_router.h" | |
464dce18 | 59 | |
9011b677 IS |
60 | struct mlxsw_sp_vr; |
61 | struct mlxsw_sp_lpm_tree; | |
62 | ||
63 | struct mlxsw_sp_router { | |
64 | struct mlxsw_sp *mlxsw_sp; | |
5f9efffb | 65 | struct mlxsw_sp_rif **rifs; |
9011b677 IS |
66 | struct mlxsw_sp_vr *vrs; |
67 | struct rhashtable neigh_ht; | |
68 | struct rhashtable nexthop_group_ht; | |
69 | struct rhashtable nexthop_ht; | |
70 | struct { | |
71 | struct mlxsw_sp_lpm_tree *trees; | |
72 | unsigned int tree_count; | |
73 | } lpm; | |
74 | struct { | |
75 | struct delayed_work dw; | |
76 | unsigned long interval; /* ms */ | |
77 | } neighs_update; | |
78 | struct delayed_work nexthop_probe_dw; | |
79 | #define MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL 5000 /* ms */ | |
80 | struct list_head nexthop_neighs_list; | |
81 | bool aborted; | |
7e39d115 | 82 | struct notifier_block fib_nb; |
9011b677 IS |
83 | }; |
84 | ||
4724ba56 IS |
85 | struct mlxsw_sp_rif { |
86 | struct list_head nexthop_list; | |
87 | struct list_head neigh_list; | |
88 | struct net_device *dev; | |
89 | struct mlxsw_sp_fid *f; | |
90 | unsigned char addr[ETH_ALEN]; | |
91 | int mtu; | |
bf95233e | 92 | u16 rif_index; |
6913229e | 93 | u16 vr_id; |
e0c0afd8 AS |
94 | unsigned int counter_ingress; |
95 | bool counter_ingress_valid; | |
96 | unsigned int counter_egress; | |
97 | bool counter_egress_valid; | |
4724ba56 IS |
98 | }; |
99 | ||
e0c0afd8 AS |
100 | static unsigned int * |
101 | mlxsw_sp_rif_p_counter_get(struct mlxsw_sp_rif *rif, | |
102 | enum mlxsw_sp_rif_counter_dir dir) | |
103 | { | |
104 | switch (dir) { | |
105 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
106 | return &rif->counter_egress; | |
107 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
108 | return &rif->counter_ingress; | |
109 | } | |
110 | return NULL; | |
111 | } | |
112 | ||
113 | static bool | |
114 | mlxsw_sp_rif_counter_valid_get(struct mlxsw_sp_rif *rif, | |
115 | enum mlxsw_sp_rif_counter_dir dir) | |
116 | { | |
117 | switch (dir) { | |
118 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
119 | return rif->counter_egress_valid; | |
120 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
121 | return rif->counter_ingress_valid; | |
122 | } | |
123 | return false; | |
124 | } | |
125 | ||
126 | static void | |
127 | mlxsw_sp_rif_counter_valid_set(struct mlxsw_sp_rif *rif, | |
128 | enum mlxsw_sp_rif_counter_dir dir, | |
129 | bool valid) | |
130 | { | |
131 | switch (dir) { | |
132 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
133 | rif->counter_egress_valid = valid; | |
134 | break; | |
135 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
136 | rif->counter_ingress_valid = valid; | |
137 | break; | |
138 | } | |
139 | } | |
140 | ||
141 | static int mlxsw_sp_rif_counter_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, | |
142 | unsigned int counter_index, bool enable, | |
143 | enum mlxsw_sp_rif_counter_dir dir) | |
144 | { | |
145 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
146 | bool is_egress = false; | |
147 | int err; | |
148 | ||
149 | if (dir == MLXSW_SP_RIF_COUNTER_EGRESS) | |
150 | is_egress = true; | |
151 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); | |
152 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
153 | if (err) | |
154 | return err; | |
155 | ||
156 | mlxsw_reg_ritr_counter_pack(ritr_pl, counter_index, enable, | |
157 | is_egress); | |
158 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
159 | } | |
160 | ||
161 | int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp, | |
162 | struct mlxsw_sp_rif *rif, | |
163 | enum mlxsw_sp_rif_counter_dir dir, u64 *cnt) | |
164 | { | |
165 | char ricnt_pl[MLXSW_REG_RICNT_LEN]; | |
166 | unsigned int *p_counter_index; | |
167 | bool valid; | |
168 | int err; | |
169 | ||
170 | valid = mlxsw_sp_rif_counter_valid_get(rif, dir); | |
171 | if (!valid) | |
172 | return -EINVAL; | |
173 | ||
174 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); | |
175 | if (!p_counter_index) | |
176 | return -EINVAL; | |
177 | mlxsw_reg_ricnt_pack(ricnt_pl, *p_counter_index, | |
178 | MLXSW_REG_RICNT_OPCODE_NOP); | |
179 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); | |
180 | if (err) | |
181 | return err; | |
182 | *cnt = mlxsw_reg_ricnt_good_unicast_packets_get(ricnt_pl); | |
183 | return 0; | |
184 | } | |
185 | ||
186 | static int mlxsw_sp_rif_counter_clear(struct mlxsw_sp *mlxsw_sp, | |
187 | unsigned int counter_index) | |
188 | { | |
189 | char ricnt_pl[MLXSW_REG_RICNT_LEN]; | |
190 | ||
191 | mlxsw_reg_ricnt_pack(ricnt_pl, counter_index, | |
192 | MLXSW_REG_RICNT_OPCODE_CLEAR); | |
193 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); | |
194 | } | |
195 | ||
196 | int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp *mlxsw_sp, | |
197 | struct mlxsw_sp_rif *rif, | |
198 | enum mlxsw_sp_rif_counter_dir dir) | |
199 | { | |
200 | unsigned int *p_counter_index; | |
201 | int err; | |
202 | ||
203 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); | |
204 | if (!p_counter_index) | |
205 | return -EINVAL; | |
206 | err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
207 | p_counter_index); | |
208 | if (err) | |
209 | return err; | |
210 | ||
211 | err = mlxsw_sp_rif_counter_clear(mlxsw_sp, *p_counter_index); | |
212 | if (err) | |
213 | goto err_counter_clear; | |
214 | ||
215 | err = mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index, | |
216 | *p_counter_index, true, dir); | |
217 | if (err) | |
218 | goto err_counter_edit; | |
219 | mlxsw_sp_rif_counter_valid_set(rif, dir, true); | |
220 | return 0; | |
221 | ||
222 | err_counter_edit: | |
223 | err_counter_clear: | |
224 | mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
225 | *p_counter_index); | |
226 | return err; | |
227 | } | |
228 | ||
229 | void mlxsw_sp_rif_counter_free(struct mlxsw_sp *mlxsw_sp, | |
230 | struct mlxsw_sp_rif *rif, | |
231 | enum mlxsw_sp_rif_counter_dir dir) | |
232 | { | |
233 | unsigned int *p_counter_index; | |
234 | ||
6b1206bb AS |
235 | if (!mlxsw_sp_rif_counter_valid_get(rif, dir)) |
236 | return; | |
237 | ||
e0c0afd8 AS |
238 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); |
239 | if (WARN_ON(!p_counter_index)) | |
240 | return; | |
241 | mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index, | |
242 | *p_counter_index, false, dir); | |
243 | mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
244 | *p_counter_index); | |
245 | mlxsw_sp_rif_counter_valid_set(rif, dir, false); | |
246 | } | |
247 | ||
4724ba56 IS |
248 | static struct mlxsw_sp_rif * |
249 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
250 | const struct net_device *dev); | |
251 | ||
9011b677 IS |
252 | #define MLXSW_SP_PREFIX_COUNT (sizeof(struct in6_addr) * BITS_PER_BYTE) |
253 | ||
254 | struct mlxsw_sp_prefix_usage { | |
255 | DECLARE_BITMAP(b, MLXSW_SP_PREFIX_COUNT); | |
256 | }; | |
257 | ||
53342023 JP |
258 | #define mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) \ |
259 | for_each_set_bit(prefix, (prefix_usage)->b, MLXSW_SP_PREFIX_COUNT) | |
260 | ||
6b75c480 JP |
261 | static bool |
262 | mlxsw_sp_prefix_usage_subset(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
263 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
264 | { | |
265 | unsigned char prefix; | |
266 | ||
267 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage1) { | |
268 | if (!test_bit(prefix, prefix_usage2->b)) | |
269 | return false; | |
270 | } | |
271 | return true; | |
272 | } | |
273 | ||
53342023 JP |
274 | static bool |
275 | mlxsw_sp_prefix_usage_eq(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
276 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
277 | { | |
278 | return !memcmp(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
279 | } | |
280 | ||
6b75c480 JP |
281 | static bool |
282 | mlxsw_sp_prefix_usage_none(struct mlxsw_sp_prefix_usage *prefix_usage) | |
283 | { | |
284 | struct mlxsw_sp_prefix_usage prefix_usage_none = {{ 0 } }; | |
285 | ||
286 | return mlxsw_sp_prefix_usage_eq(prefix_usage, &prefix_usage_none); | |
287 | } | |
288 | ||
289 | static void | |
290 | mlxsw_sp_prefix_usage_cpy(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
291 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
292 | { | |
293 | memcpy(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
294 | } | |
295 | ||
5e9c16cc JP |
296 | static void |
297 | mlxsw_sp_prefix_usage_set(struct mlxsw_sp_prefix_usage *prefix_usage, | |
298 | unsigned char prefix_len) | |
299 | { | |
300 | set_bit(prefix_len, prefix_usage->b); | |
301 | } | |
302 | ||
303 | static void | |
304 | mlxsw_sp_prefix_usage_clear(struct mlxsw_sp_prefix_usage *prefix_usage, | |
305 | unsigned char prefix_len) | |
306 | { | |
307 | clear_bit(prefix_len, prefix_usage->b); | |
308 | } | |
309 | ||
310 | struct mlxsw_sp_fib_key { | |
311 | unsigned char addr[sizeof(struct in6_addr)]; | |
312 | unsigned char prefix_len; | |
313 | }; | |
314 | ||
61c503f9 JP |
315 | enum mlxsw_sp_fib_entry_type { |
316 | MLXSW_SP_FIB_ENTRY_TYPE_REMOTE, | |
317 | MLXSW_SP_FIB_ENTRY_TYPE_LOCAL, | |
318 | MLXSW_SP_FIB_ENTRY_TYPE_TRAP, | |
319 | }; | |
320 | ||
a7ff87ac | 321 | struct mlxsw_sp_nexthop_group; |
9011b677 | 322 | struct mlxsw_sp_fib; |
a7ff87ac | 323 | |
9aecce1c IS |
324 | struct mlxsw_sp_fib_node { |
325 | struct list_head entry_list; | |
b45f64d1 | 326 | struct list_head list; |
9aecce1c | 327 | struct rhash_head ht_node; |
76610ebb | 328 | struct mlxsw_sp_fib *fib; |
5e9c16cc | 329 | struct mlxsw_sp_fib_key key; |
9aecce1c IS |
330 | }; |
331 | ||
332 | struct mlxsw_sp_fib_entry_params { | |
333 | u32 tb_id; | |
334 | u32 prio; | |
335 | u8 tos; | |
336 | u8 type; | |
337 | }; | |
338 | ||
339 | struct mlxsw_sp_fib_entry { | |
340 | struct list_head list; | |
341 | struct mlxsw_sp_fib_node *fib_node; | |
61c503f9 | 342 | enum mlxsw_sp_fib_entry_type type; |
a7ff87ac JP |
343 | struct list_head nexthop_group_node; |
344 | struct mlxsw_sp_nexthop_group *nh_group; | |
9aecce1c | 345 | struct mlxsw_sp_fib_entry_params params; |
013b20f9 | 346 | bool offloaded; |
5e9c16cc JP |
347 | }; |
348 | ||
9011b677 IS |
349 | enum mlxsw_sp_l3proto { |
350 | MLXSW_SP_L3_PROTO_IPV4, | |
351 | MLXSW_SP_L3_PROTO_IPV6, | |
352 | }; | |
353 | ||
354 | struct mlxsw_sp_lpm_tree { | |
355 | u8 id; /* tree ID */ | |
356 | unsigned int ref_count; | |
357 | enum mlxsw_sp_l3proto proto; | |
358 | struct mlxsw_sp_prefix_usage prefix_usage; | |
359 | }; | |
360 | ||
5e9c16cc JP |
361 | struct mlxsw_sp_fib { |
362 | struct rhashtable ht; | |
9aecce1c | 363 | struct list_head node_list; |
76610ebb IS |
364 | struct mlxsw_sp_vr *vr; |
365 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
5e9c16cc JP |
366 | unsigned long prefix_ref_count[MLXSW_SP_PREFIX_COUNT]; |
367 | struct mlxsw_sp_prefix_usage prefix_usage; | |
76610ebb | 368 | enum mlxsw_sp_l3proto proto; |
5e9c16cc JP |
369 | }; |
370 | ||
9011b677 IS |
371 | struct mlxsw_sp_vr { |
372 | u16 id; /* virtual router ID */ | |
373 | u32 tb_id; /* kernel fib table id */ | |
374 | unsigned int rif_count; | |
375 | struct mlxsw_sp_fib *fib4; | |
376 | }; | |
377 | ||
9aecce1c | 378 | static const struct rhashtable_params mlxsw_sp_fib_ht_params; |
5e9c16cc | 379 | |
76610ebb IS |
380 | static struct mlxsw_sp_fib *mlxsw_sp_fib_create(struct mlxsw_sp_vr *vr, |
381 | enum mlxsw_sp_l3proto proto) | |
5e9c16cc JP |
382 | { |
383 | struct mlxsw_sp_fib *fib; | |
384 | int err; | |
385 | ||
386 | fib = kzalloc(sizeof(*fib), GFP_KERNEL); | |
387 | if (!fib) | |
388 | return ERR_PTR(-ENOMEM); | |
389 | err = rhashtable_init(&fib->ht, &mlxsw_sp_fib_ht_params); | |
390 | if (err) | |
391 | goto err_rhashtable_init; | |
9aecce1c | 392 | INIT_LIST_HEAD(&fib->node_list); |
76610ebb IS |
393 | fib->proto = proto; |
394 | fib->vr = vr; | |
5e9c16cc JP |
395 | return fib; |
396 | ||
397 | err_rhashtable_init: | |
398 | kfree(fib); | |
399 | return ERR_PTR(err); | |
400 | } | |
401 | ||
402 | static void mlxsw_sp_fib_destroy(struct mlxsw_sp_fib *fib) | |
403 | { | |
9aecce1c | 404 | WARN_ON(!list_empty(&fib->node_list)); |
76610ebb | 405 | WARN_ON(fib->lpm_tree); |
5e9c16cc JP |
406 | rhashtable_destroy(&fib->ht); |
407 | kfree(fib); | |
408 | } | |
409 | ||
53342023 | 410 | static struct mlxsw_sp_lpm_tree * |
382dbb40 | 411 | mlxsw_sp_lpm_tree_find_unused(struct mlxsw_sp *mlxsw_sp) |
53342023 JP |
412 | { |
413 | static struct mlxsw_sp_lpm_tree *lpm_tree; | |
414 | int i; | |
415 | ||
9011b677 IS |
416 | for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { |
417 | lpm_tree = &mlxsw_sp->router->lpm.trees[i]; | |
382dbb40 IS |
418 | if (lpm_tree->ref_count == 0) |
419 | return lpm_tree; | |
53342023 JP |
420 | } |
421 | return NULL; | |
422 | } | |
423 | ||
424 | static int mlxsw_sp_lpm_tree_alloc(struct mlxsw_sp *mlxsw_sp, | |
425 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
426 | { | |
427 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
428 | ||
1a9234e6 IS |
429 | mlxsw_reg_ralta_pack(ralta_pl, true, |
430 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
431 | lpm_tree->id); | |
53342023 JP |
432 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
433 | } | |
434 | ||
435 | static int mlxsw_sp_lpm_tree_free(struct mlxsw_sp *mlxsw_sp, | |
436 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
437 | { | |
438 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
439 | ||
1a9234e6 IS |
440 | mlxsw_reg_ralta_pack(ralta_pl, false, |
441 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
442 | lpm_tree->id); | |
53342023 JP |
443 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
444 | } | |
445 | ||
446 | static int | |
447 | mlxsw_sp_lpm_tree_left_struct_set(struct mlxsw_sp *mlxsw_sp, | |
448 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
449 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
450 | { | |
451 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
452 | u8 root_bin = 0; | |
453 | u8 prefix; | |
454 | u8 last_prefix = MLXSW_REG_RALST_BIN_NO_CHILD; | |
455 | ||
456 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) | |
457 | root_bin = prefix; | |
458 | ||
459 | mlxsw_reg_ralst_pack(ralst_pl, root_bin, lpm_tree->id); | |
460 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) { | |
461 | if (prefix == 0) | |
462 | continue; | |
463 | mlxsw_reg_ralst_bin_pack(ralst_pl, prefix, last_prefix, | |
464 | MLXSW_REG_RALST_BIN_NO_CHILD); | |
465 | last_prefix = prefix; | |
466 | } | |
467 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); | |
468 | } | |
469 | ||
470 | static struct mlxsw_sp_lpm_tree * | |
471 | mlxsw_sp_lpm_tree_create(struct mlxsw_sp *mlxsw_sp, | |
472 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 473 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
474 | { |
475 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
476 | int err; | |
477 | ||
382dbb40 | 478 | lpm_tree = mlxsw_sp_lpm_tree_find_unused(mlxsw_sp); |
53342023 JP |
479 | if (!lpm_tree) |
480 | return ERR_PTR(-EBUSY); | |
481 | lpm_tree->proto = proto; | |
482 | err = mlxsw_sp_lpm_tree_alloc(mlxsw_sp, lpm_tree); | |
483 | if (err) | |
484 | return ERR_PTR(err); | |
485 | ||
486 | err = mlxsw_sp_lpm_tree_left_struct_set(mlxsw_sp, prefix_usage, | |
487 | lpm_tree); | |
488 | if (err) | |
489 | goto err_left_struct_set; | |
2083d367 JP |
490 | memcpy(&lpm_tree->prefix_usage, prefix_usage, |
491 | sizeof(lpm_tree->prefix_usage)); | |
53342023 JP |
492 | return lpm_tree; |
493 | ||
494 | err_left_struct_set: | |
495 | mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); | |
496 | return ERR_PTR(err); | |
497 | } | |
498 | ||
499 | static int mlxsw_sp_lpm_tree_destroy(struct mlxsw_sp *mlxsw_sp, | |
500 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
501 | { | |
502 | return mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); | |
503 | } | |
504 | ||
505 | static struct mlxsw_sp_lpm_tree * | |
506 | mlxsw_sp_lpm_tree_get(struct mlxsw_sp *mlxsw_sp, | |
507 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 508 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
509 | { |
510 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
511 | int i; | |
512 | ||
9011b677 IS |
513 | for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { |
514 | lpm_tree = &mlxsw_sp->router->lpm.trees[i]; | |
8b99becd JP |
515 | if (lpm_tree->ref_count != 0 && |
516 | lpm_tree->proto == proto && | |
53342023 JP |
517 | mlxsw_sp_prefix_usage_eq(&lpm_tree->prefix_usage, |
518 | prefix_usage)) | |
519 | goto inc_ref_count; | |
520 | } | |
521 | lpm_tree = mlxsw_sp_lpm_tree_create(mlxsw_sp, prefix_usage, | |
382dbb40 | 522 | proto); |
53342023 JP |
523 | if (IS_ERR(lpm_tree)) |
524 | return lpm_tree; | |
525 | ||
526 | inc_ref_count: | |
527 | lpm_tree->ref_count++; | |
528 | return lpm_tree; | |
529 | } | |
530 | ||
531 | static int mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp, | |
532 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
533 | { | |
534 | if (--lpm_tree->ref_count == 0) | |
535 | return mlxsw_sp_lpm_tree_destroy(mlxsw_sp, lpm_tree); | |
536 | return 0; | |
537 | } | |
538 | ||
8494ab06 IS |
539 | #define MLXSW_SP_LPM_TREE_MIN 2 /* trees 0 and 1 are reserved */ |
540 | ||
541 | static int mlxsw_sp_lpm_init(struct mlxsw_sp *mlxsw_sp) | |
53342023 JP |
542 | { |
543 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
8494ab06 | 544 | u64 max_trees; |
53342023 JP |
545 | int i; |
546 | ||
8494ab06 IS |
547 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LPM_TREES)) |
548 | return -EIO; | |
549 | ||
550 | max_trees = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LPM_TREES); | |
9011b677 IS |
551 | mlxsw_sp->router->lpm.tree_count = max_trees - MLXSW_SP_LPM_TREE_MIN; |
552 | mlxsw_sp->router->lpm.trees = kcalloc(mlxsw_sp->router->lpm.tree_count, | |
8494ab06 IS |
553 | sizeof(struct mlxsw_sp_lpm_tree), |
554 | GFP_KERNEL); | |
9011b677 | 555 | if (!mlxsw_sp->router->lpm.trees) |
8494ab06 IS |
556 | return -ENOMEM; |
557 | ||
9011b677 IS |
558 | for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { |
559 | lpm_tree = &mlxsw_sp->router->lpm.trees[i]; | |
53342023 JP |
560 | lpm_tree->id = i + MLXSW_SP_LPM_TREE_MIN; |
561 | } | |
8494ab06 IS |
562 | |
563 | return 0; | |
564 | } | |
565 | ||
566 | static void mlxsw_sp_lpm_fini(struct mlxsw_sp *mlxsw_sp) | |
567 | { | |
9011b677 | 568 | kfree(mlxsw_sp->router->lpm.trees); |
53342023 JP |
569 | } |
570 | ||
76610ebb IS |
571 | static bool mlxsw_sp_vr_is_used(const struct mlxsw_sp_vr *vr) |
572 | { | |
573 | return !!vr->fib4; | |
574 | } | |
575 | ||
6b75c480 JP |
576 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find_unused(struct mlxsw_sp *mlxsw_sp) |
577 | { | |
578 | struct mlxsw_sp_vr *vr; | |
579 | int i; | |
580 | ||
c1a38311 | 581 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 582 | vr = &mlxsw_sp->router->vrs[i]; |
76610ebb | 583 | if (!mlxsw_sp_vr_is_used(vr)) |
6b75c480 JP |
584 | return vr; |
585 | } | |
586 | return NULL; | |
587 | } | |
588 | ||
589 | static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 590 | const struct mlxsw_sp_fib *fib) |
6b75c480 JP |
591 | { |
592 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
593 | ||
76610ebb IS |
594 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
595 | (enum mlxsw_reg_ralxx_protocol) fib->proto, | |
596 | fib->lpm_tree->id); | |
6b75c480 JP |
597 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
598 | } | |
599 | ||
600 | static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 601 | const struct mlxsw_sp_fib *fib) |
6b75c480 JP |
602 | { |
603 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
604 | ||
605 | /* Bind to tree 0 which is default */ | |
76610ebb IS |
606 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
607 | (enum mlxsw_reg_ralxx_protocol) fib->proto, 0); | |
6b75c480 JP |
608 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
609 | } | |
610 | ||
611 | static u32 mlxsw_sp_fix_tb_id(u32 tb_id) | |
612 | { | |
613 | /* For our purpose, squash main and local table into one */ | |
614 | if (tb_id == RT_TABLE_LOCAL) | |
615 | tb_id = RT_TABLE_MAIN; | |
616 | return tb_id; | |
617 | } | |
618 | ||
619 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 620 | u32 tb_id) |
6b75c480 JP |
621 | { |
622 | struct mlxsw_sp_vr *vr; | |
623 | int i; | |
624 | ||
625 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
9497c042 | 626 | |
c1a38311 | 627 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 628 | vr = &mlxsw_sp->router->vrs[i]; |
76610ebb | 629 | if (mlxsw_sp_vr_is_used(vr) && vr->tb_id == tb_id) |
6b75c480 JP |
630 | return vr; |
631 | } | |
632 | return NULL; | |
633 | } | |
634 | ||
76610ebb IS |
635 | static struct mlxsw_sp_fib *mlxsw_sp_vr_fib(const struct mlxsw_sp_vr *vr, |
636 | enum mlxsw_sp_l3proto proto) | |
637 | { | |
638 | switch (proto) { | |
639 | case MLXSW_SP_L3_PROTO_IPV4: | |
640 | return vr->fib4; | |
641 | case MLXSW_SP_L3_PROTO_IPV6: | |
642 | BUG_ON(1); | |
643 | } | |
644 | return NULL; | |
645 | } | |
646 | ||
6b75c480 | 647 | static struct mlxsw_sp_vr *mlxsw_sp_vr_create(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 648 | u32 tb_id) |
6b75c480 | 649 | { |
6b75c480 | 650 | struct mlxsw_sp_vr *vr; |
6b75c480 JP |
651 | |
652 | vr = mlxsw_sp_vr_find_unused(mlxsw_sp); | |
653 | if (!vr) | |
654 | return ERR_PTR(-EBUSY); | |
76610ebb IS |
655 | vr->fib4 = mlxsw_sp_fib_create(vr, MLXSW_SP_L3_PROTO_IPV4); |
656 | if (IS_ERR(vr->fib4)) | |
657 | return ERR_CAST(vr->fib4); | |
6b75c480 | 658 | vr->tb_id = tb_id; |
6b75c480 | 659 | return vr; |
6b75c480 JP |
660 | } |
661 | ||
76610ebb | 662 | static void mlxsw_sp_vr_destroy(struct mlxsw_sp_vr *vr) |
6b75c480 | 663 | { |
76610ebb IS |
664 | mlxsw_sp_fib_destroy(vr->fib4); |
665 | vr->fib4 = NULL; | |
6b75c480 JP |
666 | } |
667 | ||
668 | static int | |
76610ebb | 669 | mlxsw_sp_vr_lpm_tree_check(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fib *fib, |
6b75c480 JP |
670 | struct mlxsw_sp_prefix_usage *req_prefix_usage) |
671 | { | |
76610ebb | 672 | struct mlxsw_sp_lpm_tree *lpm_tree = fib->lpm_tree; |
f7df4923 IS |
673 | struct mlxsw_sp_lpm_tree *new_tree; |
674 | int err; | |
6b75c480 | 675 | |
f7df4923 | 676 | if (mlxsw_sp_prefix_usage_eq(req_prefix_usage, &lpm_tree->prefix_usage)) |
6b75c480 JP |
677 | return 0; |
678 | ||
f7df4923 | 679 | new_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, req_prefix_usage, |
76610ebb | 680 | fib->proto); |
f7df4923 | 681 | if (IS_ERR(new_tree)) { |
6b75c480 JP |
682 | /* We failed to get a tree according to the required |
683 | * prefix usage. However, the current tree might be still good | |
684 | * for us if our requirement is subset of the prefixes used | |
685 | * in the tree. | |
686 | */ | |
687 | if (mlxsw_sp_prefix_usage_subset(req_prefix_usage, | |
f7df4923 | 688 | &lpm_tree->prefix_usage)) |
6b75c480 | 689 | return 0; |
f7df4923 | 690 | return PTR_ERR(new_tree); |
6b75c480 JP |
691 | } |
692 | ||
f7df4923 | 693 | /* Prevent packet loss by overwriting existing binding */ |
76610ebb IS |
694 | fib->lpm_tree = new_tree; |
695 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib); | |
f7df4923 IS |
696 | if (err) |
697 | goto err_tree_bind; | |
698 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
699 | ||
700 | return 0; | |
701 | ||
702 | err_tree_bind: | |
76610ebb | 703 | fib->lpm_tree = lpm_tree; |
f7df4923 IS |
704 | mlxsw_sp_lpm_tree_put(mlxsw_sp, new_tree); |
705 | return err; | |
6b75c480 JP |
706 | } |
707 | ||
76610ebb | 708 | static struct mlxsw_sp_vr *mlxsw_sp_vr_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id) |
6b75c480 JP |
709 | { |
710 | struct mlxsw_sp_vr *vr; | |
6b75c480 JP |
711 | |
712 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
76610ebb IS |
713 | vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id); |
714 | if (!vr) | |
715 | vr = mlxsw_sp_vr_create(mlxsw_sp, tb_id); | |
6b75c480 JP |
716 | return vr; |
717 | } | |
718 | ||
76610ebb | 719 | static void mlxsw_sp_vr_put(struct mlxsw_sp_vr *vr) |
6b75c480 | 720 | { |
6913229e | 721 | if (!vr->rif_count && list_empty(&vr->fib4->node_list)) |
76610ebb | 722 | mlxsw_sp_vr_destroy(vr); |
6b75c480 JP |
723 | } |
724 | ||
9497c042 | 725 | static int mlxsw_sp_vrs_init(struct mlxsw_sp *mlxsw_sp) |
6b75c480 JP |
726 | { |
727 | struct mlxsw_sp_vr *vr; | |
c1a38311 | 728 | u64 max_vrs; |
6b75c480 JP |
729 | int i; |
730 | ||
c1a38311 | 731 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_VRS)) |
9497c042 NF |
732 | return -EIO; |
733 | ||
c1a38311 | 734 | max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); |
9011b677 IS |
735 | mlxsw_sp->router->vrs = kcalloc(max_vrs, sizeof(struct mlxsw_sp_vr), |
736 | GFP_KERNEL); | |
737 | if (!mlxsw_sp->router->vrs) | |
9497c042 NF |
738 | return -ENOMEM; |
739 | ||
c1a38311 | 740 | for (i = 0; i < max_vrs; i++) { |
9011b677 | 741 | vr = &mlxsw_sp->router->vrs[i]; |
6b75c480 JP |
742 | vr->id = i; |
743 | } | |
9497c042 NF |
744 | |
745 | return 0; | |
746 | } | |
747 | ||
ac571de9 IS |
748 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp); |
749 | ||
9497c042 NF |
750 | static void mlxsw_sp_vrs_fini(struct mlxsw_sp *mlxsw_sp) |
751 | { | |
3057224e IS |
752 | /* At this stage we're guaranteed not to have new incoming |
753 | * FIB notifications and the work queue is free from FIBs | |
754 | * sitting on top of mlxsw netdevs. However, we can still | |
755 | * have other FIBs queued. Flush the queue before flushing | |
756 | * the device's tables. No need for locks, as we're the only | |
757 | * writer. | |
758 | */ | |
759 | mlxsw_core_flush_owq(); | |
ac571de9 | 760 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
9011b677 | 761 | kfree(mlxsw_sp->router->vrs); |
6b75c480 JP |
762 | } |
763 | ||
6cf3c971 | 764 | struct mlxsw_sp_neigh_key { |
33b1341c | 765 | struct neighbour *n; |
6cf3c971 JP |
766 | }; |
767 | ||
768 | struct mlxsw_sp_neigh_entry { | |
9665b745 | 769 | struct list_head rif_list_node; |
6cf3c971 JP |
770 | struct rhash_head ht_node; |
771 | struct mlxsw_sp_neigh_key key; | |
772 | u16 rif; | |
5c8802f1 | 773 | bool connected; |
a6bf9e93 | 774 | unsigned char ha[ETH_ALEN]; |
a7ff87ac JP |
775 | struct list_head nexthop_list; /* list of nexthops using |
776 | * this neigh entry | |
777 | */ | |
b2157149 | 778 | struct list_head nexthop_neighs_list_node; |
6cf3c971 JP |
779 | }; |
780 | ||
781 | static const struct rhashtable_params mlxsw_sp_neigh_ht_params = { | |
782 | .key_offset = offsetof(struct mlxsw_sp_neigh_entry, key), | |
783 | .head_offset = offsetof(struct mlxsw_sp_neigh_entry, ht_node), | |
784 | .key_len = sizeof(struct mlxsw_sp_neigh_key), | |
785 | }; | |
786 | ||
6cf3c971 | 787 | static struct mlxsw_sp_neigh_entry * |
5c8802f1 IS |
788 | mlxsw_sp_neigh_entry_alloc(struct mlxsw_sp *mlxsw_sp, struct neighbour *n, |
789 | u16 rif) | |
6cf3c971 JP |
790 | { |
791 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
792 | ||
5c8802f1 | 793 | neigh_entry = kzalloc(sizeof(*neigh_entry), GFP_KERNEL); |
6cf3c971 JP |
794 | if (!neigh_entry) |
795 | return NULL; | |
5c8802f1 | 796 | |
33b1341c | 797 | neigh_entry->key.n = n; |
6cf3c971 | 798 | neigh_entry->rif = rif; |
a7ff87ac | 799 | INIT_LIST_HEAD(&neigh_entry->nexthop_list); |
5c8802f1 | 800 | |
6cf3c971 JP |
801 | return neigh_entry; |
802 | } | |
803 | ||
5c8802f1 | 804 | static void mlxsw_sp_neigh_entry_free(struct mlxsw_sp_neigh_entry *neigh_entry) |
6cf3c971 JP |
805 | { |
806 | kfree(neigh_entry); | |
807 | } | |
808 | ||
5c8802f1 IS |
809 | static int |
810 | mlxsw_sp_neigh_entry_insert(struct mlxsw_sp *mlxsw_sp, | |
811 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 812 | { |
9011b677 | 813 | return rhashtable_insert_fast(&mlxsw_sp->router->neigh_ht, |
5c8802f1 IS |
814 | &neigh_entry->ht_node, |
815 | mlxsw_sp_neigh_ht_params); | |
816 | } | |
6cf3c971 | 817 | |
5c8802f1 IS |
818 | static void |
819 | mlxsw_sp_neigh_entry_remove(struct mlxsw_sp *mlxsw_sp, | |
820 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
821 | { | |
9011b677 | 822 | rhashtable_remove_fast(&mlxsw_sp->router->neigh_ht, |
5c8802f1 IS |
823 | &neigh_entry->ht_node, |
824 | mlxsw_sp_neigh_ht_params); | |
6cf3c971 JP |
825 | } |
826 | ||
5c8802f1 IS |
827 | static struct mlxsw_sp_neigh_entry * |
828 | mlxsw_sp_neigh_entry_create(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
6cf3c971 | 829 | { |
6cf3c971 | 830 | struct mlxsw_sp_neigh_entry *neigh_entry; |
bf95233e | 831 | struct mlxsw_sp_rif *rif; |
6cf3c971 JP |
832 | int err; |
833 | ||
bf95233e AS |
834 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, n->dev); |
835 | if (!rif) | |
5c8802f1 | 836 | return ERR_PTR(-EINVAL); |
6cf3c971 | 837 | |
bf95233e | 838 | neigh_entry = mlxsw_sp_neigh_entry_alloc(mlxsw_sp, n, rif->rif_index); |
6cf3c971 | 839 | if (!neigh_entry) |
5c8802f1 IS |
840 | return ERR_PTR(-ENOMEM); |
841 | ||
6cf3c971 JP |
842 | err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry); |
843 | if (err) | |
844 | goto err_neigh_entry_insert; | |
5c8802f1 | 845 | |
bf95233e | 846 | list_add(&neigh_entry->rif_list_node, &rif->neigh_list); |
9665b745 | 847 | |
5c8802f1 | 848 | return neigh_entry; |
6cf3c971 JP |
849 | |
850 | err_neigh_entry_insert: | |
5c8802f1 IS |
851 | mlxsw_sp_neigh_entry_free(neigh_entry); |
852 | return ERR_PTR(err); | |
6cf3c971 JP |
853 | } |
854 | ||
5c8802f1 IS |
855 | static void |
856 | mlxsw_sp_neigh_entry_destroy(struct mlxsw_sp *mlxsw_sp, | |
857 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 858 | { |
9665b745 | 859 | list_del(&neigh_entry->rif_list_node); |
5c8802f1 IS |
860 | mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry); |
861 | mlxsw_sp_neigh_entry_free(neigh_entry); | |
862 | } | |
6cf3c971 | 863 | |
5c8802f1 IS |
864 | static struct mlxsw_sp_neigh_entry * |
865 | mlxsw_sp_neigh_entry_lookup(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
866 | { | |
867 | struct mlxsw_sp_neigh_key key; | |
6cf3c971 | 868 | |
5c8802f1 | 869 | key.n = n; |
9011b677 | 870 | return rhashtable_lookup_fast(&mlxsw_sp->router->neigh_ht, |
5c8802f1 | 871 | &key, mlxsw_sp_neigh_ht_params); |
6cf3c971 JP |
872 | } |
873 | ||
c723c735 YG |
874 | static void |
875 | mlxsw_sp_router_neighs_update_interval_init(struct mlxsw_sp *mlxsw_sp) | |
876 | { | |
877 | unsigned long interval = NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME); | |
878 | ||
9011b677 | 879 | mlxsw_sp->router->neighs_update.interval = jiffies_to_msecs(interval); |
c723c735 YG |
880 | } |
881 | ||
882 | static void mlxsw_sp_router_neigh_ent_ipv4_process(struct mlxsw_sp *mlxsw_sp, | |
883 | char *rauhtd_pl, | |
884 | int ent_index) | |
885 | { | |
886 | struct net_device *dev; | |
887 | struct neighbour *n; | |
888 | __be32 dipn; | |
889 | u32 dip; | |
890 | u16 rif; | |
891 | ||
892 | mlxsw_reg_rauhtd_ent_ipv4_unpack(rauhtd_pl, ent_index, &rif, &dip); | |
893 | ||
5f9efffb | 894 | if (!mlxsw_sp->router->rifs[rif]) { |
c723c735 YG |
895 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n"); |
896 | return; | |
897 | } | |
898 | ||
899 | dipn = htonl(dip); | |
5f9efffb | 900 | dev = mlxsw_sp->router->rifs[rif]->dev; |
c723c735 YG |
901 | n = neigh_lookup(&arp_tbl, &dipn, dev); |
902 | if (!n) { | |
903 | netdev_err(dev, "Failed to find matching neighbour for IP=%pI4h\n", | |
904 | &dip); | |
905 | return; | |
906 | } | |
907 | ||
908 | netdev_dbg(dev, "Updating neighbour with IP=%pI4h\n", &dip); | |
909 | neigh_event_send(n, NULL); | |
910 | neigh_release(n); | |
911 | } | |
912 | ||
913 | static void mlxsw_sp_router_neigh_rec_ipv4_process(struct mlxsw_sp *mlxsw_sp, | |
914 | char *rauhtd_pl, | |
915 | int rec_index) | |
916 | { | |
917 | u8 num_entries; | |
918 | int i; | |
919 | ||
920 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
921 | rec_index); | |
922 | /* Hardware starts counting at 0, so add 1. */ | |
923 | num_entries++; | |
924 | ||
925 | /* Each record consists of several neighbour entries. */ | |
926 | for (i = 0; i < num_entries; i++) { | |
927 | int ent_index; | |
928 | ||
929 | ent_index = rec_index * MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC + i; | |
930 | mlxsw_sp_router_neigh_ent_ipv4_process(mlxsw_sp, rauhtd_pl, | |
931 | ent_index); | |
932 | } | |
933 | ||
934 | } | |
935 | ||
936 | static void mlxsw_sp_router_neigh_rec_process(struct mlxsw_sp *mlxsw_sp, | |
937 | char *rauhtd_pl, int rec_index) | |
938 | { | |
939 | switch (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, rec_index)) { | |
940 | case MLXSW_REG_RAUHTD_TYPE_IPV4: | |
941 | mlxsw_sp_router_neigh_rec_ipv4_process(mlxsw_sp, rauhtd_pl, | |
942 | rec_index); | |
943 | break; | |
944 | case MLXSW_REG_RAUHTD_TYPE_IPV6: | |
945 | WARN_ON_ONCE(1); | |
946 | break; | |
947 | } | |
948 | } | |
949 | ||
42cdb338 AS |
950 | static bool mlxsw_sp_router_rauhtd_is_full(char *rauhtd_pl) |
951 | { | |
952 | u8 num_rec, last_rec_index, num_entries; | |
953 | ||
954 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
955 | last_rec_index = num_rec - 1; | |
956 | ||
957 | if (num_rec < MLXSW_REG_RAUHTD_REC_MAX_NUM) | |
958 | return false; | |
959 | if (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, last_rec_index) == | |
960 | MLXSW_REG_RAUHTD_TYPE_IPV6) | |
961 | return true; | |
962 | ||
963 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
964 | last_rec_index); | |
965 | if (++num_entries == MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC) | |
966 | return true; | |
967 | return false; | |
968 | } | |
969 | ||
b2157149 | 970 | static int mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp) |
c723c735 | 971 | { |
c723c735 YG |
972 | char *rauhtd_pl; |
973 | u8 num_rec; | |
974 | int i, err; | |
975 | ||
976 | rauhtd_pl = kmalloc(MLXSW_REG_RAUHTD_LEN, GFP_KERNEL); | |
977 | if (!rauhtd_pl) | |
b2157149 | 978 | return -ENOMEM; |
c723c735 YG |
979 | |
980 | /* Make sure the neighbour's netdev isn't removed in the | |
981 | * process. | |
982 | */ | |
983 | rtnl_lock(); | |
984 | do { | |
985 | mlxsw_reg_rauhtd_pack(rauhtd_pl, MLXSW_REG_RAUHTD_TYPE_IPV4); | |
986 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(rauhtd), | |
987 | rauhtd_pl); | |
988 | if (err) { | |
989 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to dump neighbour talbe\n"); | |
990 | break; | |
991 | } | |
992 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
993 | for (i = 0; i < num_rec; i++) | |
994 | mlxsw_sp_router_neigh_rec_process(mlxsw_sp, rauhtd_pl, | |
995 | i); | |
42cdb338 | 996 | } while (mlxsw_sp_router_rauhtd_is_full(rauhtd_pl)); |
c723c735 YG |
997 | rtnl_unlock(); |
998 | ||
999 | kfree(rauhtd_pl); | |
b2157149 YG |
1000 | return err; |
1001 | } | |
1002 | ||
1003 | static void mlxsw_sp_router_neighs_update_nh(struct mlxsw_sp *mlxsw_sp) | |
1004 | { | |
1005 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1006 | ||
1007 | /* Take RTNL mutex here to prevent lists from changes */ | |
1008 | rtnl_lock(); | |
9011b677 | 1009 | list_for_each_entry(neigh_entry, &mlxsw_sp->router->nexthop_neighs_list, |
8a0b7275 | 1010 | nexthop_neighs_list_node) |
b2157149 YG |
1011 | /* If this neigh have nexthops, make the kernel think this neigh |
1012 | * is active regardless of the traffic. | |
1013 | */ | |
8a0b7275 | 1014 | neigh_event_send(neigh_entry->key.n, NULL); |
b2157149 YG |
1015 | rtnl_unlock(); |
1016 | } | |
1017 | ||
1018 | static void | |
1019 | mlxsw_sp_router_neighs_update_work_schedule(struct mlxsw_sp *mlxsw_sp) | |
1020 | { | |
9011b677 | 1021 | unsigned long interval = mlxsw_sp->router->neighs_update.interval; |
b2157149 | 1022 | |
9011b677 | 1023 | mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, |
b2157149 YG |
1024 | msecs_to_jiffies(interval)); |
1025 | } | |
1026 | ||
1027 | static void mlxsw_sp_router_neighs_update_work(struct work_struct *work) | |
1028 | { | |
9011b677 | 1029 | struct mlxsw_sp_router *router; |
b2157149 YG |
1030 | int err; |
1031 | ||
9011b677 IS |
1032 | router = container_of(work, struct mlxsw_sp_router, |
1033 | neighs_update.dw.work); | |
1034 | err = mlxsw_sp_router_neighs_update_rauhtd(router->mlxsw_sp); | |
b2157149 | 1035 | if (err) |
9011b677 | 1036 | dev_err(router->mlxsw_sp->bus_info->dev, "Could not update kernel for neigh activity"); |
b2157149 | 1037 | |
9011b677 | 1038 | mlxsw_sp_router_neighs_update_nh(router->mlxsw_sp); |
b2157149 | 1039 | |
9011b677 | 1040 | mlxsw_sp_router_neighs_update_work_schedule(router->mlxsw_sp); |
c723c735 YG |
1041 | } |
1042 | ||
0b2361d9 YG |
1043 | static void mlxsw_sp_router_probe_unresolved_nexthops(struct work_struct *work) |
1044 | { | |
1045 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
9011b677 | 1046 | struct mlxsw_sp_router *router; |
0b2361d9 | 1047 | |
9011b677 IS |
1048 | router = container_of(work, struct mlxsw_sp_router, |
1049 | nexthop_probe_dw.work); | |
0b2361d9 YG |
1050 | /* Iterate over nexthop neighbours, find those who are unresolved and |
1051 | * send arp on them. This solves the chicken-egg problem when | |
1052 | * the nexthop wouldn't get offloaded until the neighbor is resolved | |
1053 | * but it wouldn't get resolved ever in case traffic is flowing in HW | |
1054 | * using different nexthop. | |
1055 | * | |
1056 | * Take RTNL mutex here to prevent lists from changes. | |
1057 | */ | |
1058 | rtnl_lock(); | |
9011b677 | 1059 | list_for_each_entry(neigh_entry, &router->nexthop_neighs_list, |
8a0b7275 | 1060 | nexthop_neighs_list_node) |
01b1aa35 | 1061 | if (!neigh_entry->connected) |
33b1341c | 1062 | neigh_event_send(neigh_entry->key.n, NULL); |
0b2361d9 YG |
1063 | rtnl_unlock(); |
1064 | ||
9011b677 | 1065 | mlxsw_core_schedule_dw(&router->nexthop_probe_dw, |
0b2361d9 YG |
1066 | MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL); |
1067 | } | |
1068 | ||
a7ff87ac JP |
1069 | static void |
1070 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
1071 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1072 | bool removing); | |
1073 | ||
5c8802f1 IS |
1074 | static enum mlxsw_reg_rauht_op mlxsw_sp_rauht_op(bool adding) |
1075 | { | |
1076 | return adding ? MLXSW_REG_RAUHT_OP_WRITE_ADD : | |
1077 | MLXSW_REG_RAUHT_OP_WRITE_DELETE; | |
1078 | } | |
1079 | ||
1080 | static void | |
1081 | mlxsw_sp_router_neigh_entry_op4(struct mlxsw_sp *mlxsw_sp, | |
1082 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1083 | enum mlxsw_reg_rauht_op op) | |
a6bf9e93 | 1084 | { |
33b1341c | 1085 | struct neighbour *n = neigh_entry->key.n; |
5c8802f1 | 1086 | u32 dip = ntohl(*((__be32 *) n->primary_key)); |
a6bf9e93 | 1087 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; |
5c8802f1 IS |
1088 | |
1089 | mlxsw_reg_rauht_pack4(rauht_pl, op, neigh_entry->rif, neigh_entry->ha, | |
1090 | dip); | |
1091 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); | |
1092 | } | |
1093 | ||
1094 | static void | |
1095 | mlxsw_sp_neigh_entry_update(struct mlxsw_sp *mlxsw_sp, | |
1096 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1097 | bool adding) | |
1098 | { | |
1099 | if (!adding && !neigh_entry->connected) | |
1100 | return; | |
1101 | neigh_entry->connected = adding; | |
1102 | if (neigh_entry->key.n->tbl == &arp_tbl) | |
1103 | mlxsw_sp_router_neigh_entry_op4(mlxsw_sp, neigh_entry, | |
1104 | mlxsw_sp_rauht_op(adding)); | |
1105 | else | |
1106 | WARN_ON_ONCE(1); | |
1107 | } | |
1108 | ||
1109 | struct mlxsw_sp_neigh_event_work { | |
1110 | struct work_struct work; | |
1111 | struct mlxsw_sp *mlxsw_sp; | |
1112 | struct neighbour *n; | |
1113 | }; | |
1114 | ||
1115 | static void mlxsw_sp_router_neigh_event_work(struct work_struct *work) | |
1116 | { | |
1117 | struct mlxsw_sp_neigh_event_work *neigh_work = | |
1118 | container_of(work, struct mlxsw_sp_neigh_event_work, work); | |
1119 | struct mlxsw_sp *mlxsw_sp = neigh_work->mlxsw_sp; | |
1120 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1121 | struct neighbour *n = neigh_work->n; | |
1122 | unsigned char ha[ETH_ALEN]; | |
a6bf9e93 | 1123 | bool entry_connected; |
93a87e5e | 1124 | u8 nud_state, dead; |
a6bf9e93 | 1125 | |
5c8802f1 IS |
1126 | /* If these parameters are changed after we release the lock, |
1127 | * then we are guaranteed to receive another event letting us | |
1128 | * know about it. | |
1129 | */ | |
a6bf9e93 | 1130 | read_lock_bh(&n->lock); |
5c8802f1 | 1131 | memcpy(ha, n->ha, ETH_ALEN); |
a6bf9e93 | 1132 | nud_state = n->nud_state; |
93a87e5e | 1133 | dead = n->dead; |
a6bf9e93 YG |
1134 | read_unlock_bh(&n->lock); |
1135 | ||
5c8802f1 | 1136 | rtnl_lock(); |
93a87e5e | 1137 | entry_connected = nud_state & NUD_VALID && !dead; |
5c8802f1 IS |
1138 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); |
1139 | if (!entry_connected && !neigh_entry) | |
1140 | goto out; | |
1141 | if (!neigh_entry) { | |
1142 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); | |
1143 | if (IS_ERR(neigh_entry)) | |
1144 | goto out; | |
a6bf9e93 YG |
1145 | } |
1146 | ||
5c8802f1 IS |
1147 | memcpy(neigh_entry->ha, ha, ETH_ALEN); |
1148 | mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, entry_connected); | |
1149 | mlxsw_sp_nexthop_neigh_update(mlxsw_sp, neigh_entry, !entry_connected); | |
1150 | ||
1151 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) | |
1152 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1153 | ||
1154 | out: | |
1155 | rtnl_unlock(); | |
a6bf9e93 | 1156 | neigh_release(n); |
5c8802f1 | 1157 | kfree(neigh_work); |
a6bf9e93 YG |
1158 | } |
1159 | ||
e7322638 JP |
1160 | int mlxsw_sp_router_netevent_event(struct notifier_block *unused, |
1161 | unsigned long event, void *ptr) | |
c723c735 | 1162 | { |
5c8802f1 | 1163 | struct mlxsw_sp_neigh_event_work *neigh_work; |
c723c735 YG |
1164 | struct mlxsw_sp_port *mlxsw_sp_port; |
1165 | struct mlxsw_sp *mlxsw_sp; | |
1166 | unsigned long interval; | |
1167 | struct neigh_parms *p; | |
a6bf9e93 | 1168 | struct neighbour *n; |
c723c735 YG |
1169 | |
1170 | switch (event) { | |
1171 | case NETEVENT_DELAY_PROBE_TIME_UPDATE: | |
1172 | p = ptr; | |
1173 | ||
1174 | /* We don't care about changes in the default table. */ | |
1175 | if (!p->dev || p->tbl != &arp_tbl) | |
1176 | return NOTIFY_DONE; | |
1177 | ||
1178 | /* We are in atomic context and can't take RTNL mutex, | |
1179 | * so use RCU variant to walk the device chain. | |
1180 | */ | |
1181 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(p->dev); | |
1182 | if (!mlxsw_sp_port) | |
1183 | return NOTIFY_DONE; | |
1184 | ||
1185 | mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
1186 | interval = jiffies_to_msecs(NEIGH_VAR(p, DELAY_PROBE_TIME)); | |
9011b677 | 1187 | mlxsw_sp->router->neighs_update.interval = interval; |
c723c735 YG |
1188 | |
1189 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
1190 | break; | |
a6bf9e93 YG |
1191 | case NETEVENT_NEIGH_UPDATE: |
1192 | n = ptr; | |
a6bf9e93 YG |
1193 | |
1194 | if (n->tbl != &arp_tbl) | |
1195 | return NOTIFY_DONE; | |
1196 | ||
5c8802f1 | 1197 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(n->dev); |
a6bf9e93 YG |
1198 | if (!mlxsw_sp_port) |
1199 | return NOTIFY_DONE; | |
1200 | ||
5c8802f1 IS |
1201 | neigh_work = kzalloc(sizeof(*neigh_work), GFP_ATOMIC); |
1202 | if (!neigh_work) { | |
a6bf9e93 | 1203 | mlxsw_sp_port_dev_put(mlxsw_sp_port); |
5c8802f1 | 1204 | return NOTIFY_BAD; |
a6bf9e93 | 1205 | } |
5c8802f1 IS |
1206 | |
1207 | INIT_WORK(&neigh_work->work, mlxsw_sp_router_neigh_event_work); | |
1208 | neigh_work->mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
1209 | neigh_work->n = n; | |
a6bf9e93 YG |
1210 | |
1211 | /* Take a reference to ensure the neighbour won't be | |
1212 | * destructed until we drop the reference in delayed | |
1213 | * work. | |
1214 | */ | |
1215 | neigh_clone(n); | |
5c8802f1 IS |
1216 | mlxsw_core_schedule_work(&neigh_work->work); |
1217 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
a6bf9e93 | 1218 | break; |
c723c735 YG |
1219 | } |
1220 | ||
1221 | return NOTIFY_DONE; | |
1222 | } | |
1223 | ||
6cf3c971 JP |
1224 | static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp) |
1225 | { | |
c723c735 YG |
1226 | int err; |
1227 | ||
9011b677 | 1228 | err = rhashtable_init(&mlxsw_sp->router->neigh_ht, |
c723c735 YG |
1229 | &mlxsw_sp_neigh_ht_params); |
1230 | if (err) | |
1231 | return err; | |
1232 | ||
1233 | /* Initialize the polling interval according to the default | |
1234 | * table. | |
1235 | */ | |
1236 | mlxsw_sp_router_neighs_update_interval_init(mlxsw_sp); | |
1237 | ||
0b2361d9 | 1238 | /* Create the delayed works for the activity_update */ |
9011b677 | 1239 | INIT_DELAYED_WORK(&mlxsw_sp->router->neighs_update.dw, |
c723c735 | 1240 | mlxsw_sp_router_neighs_update_work); |
9011b677 | 1241 | INIT_DELAYED_WORK(&mlxsw_sp->router->nexthop_probe_dw, |
0b2361d9 | 1242 | mlxsw_sp_router_probe_unresolved_nexthops); |
9011b677 IS |
1243 | mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, 0); |
1244 | mlxsw_core_schedule_dw(&mlxsw_sp->router->nexthop_probe_dw, 0); | |
c723c735 | 1245 | return 0; |
6cf3c971 JP |
1246 | } |
1247 | ||
1248 | static void mlxsw_sp_neigh_fini(struct mlxsw_sp *mlxsw_sp) | |
1249 | { | |
9011b677 IS |
1250 | cancel_delayed_work_sync(&mlxsw_sp->router->neighs_update.dw); |
1251 | cancel_delayed_work_sync(&mlxsw_sp->router->nexthop_probe_dw); | |
1252 | rhashtable_destroy(&mlxsw_sp->router->neigh_ht); | |
6cf3c971 JP |
1253 | } |
1254 | ||
9665b745 | 1255 | static int mlxsw_sp_neigh_rif_flush(struct mlxsw_sp *mlxsw_sp, |
bf95233e | 1256 | const struct mlxsw_sp_rif *rif) |
9665b745 IS |
1257 | { |
1258 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; | |
1259 | ||
1260 | mlxsw_reg_rauht_pack(rauht_pl, MLXSW_REG_RAUHT_OP_WRITE_DELETE_ALL, | |
bf95233e | 1261 | rif->rif_index, rif->addr); |
9665b745 IS |
1262 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); |
1263 | } | |
1264 | ||
1265 | static void mlxsw_sp_neigh_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
bf95233e | 1266 | struct mlxsw_sp_rif *rif) |
9665b745 IS |
1267 | { |
1268 | struct mlxsw_sp_neigh_entry *neigh_entry, *tmp; | |
1269 | ||
bf95233e AS |
1270 | mlxsw_sp_neigh_rif_flush(mlxsw_sp, rif); |
1271 | list_for_each_entry_safe(neigh_entry, tmp, &rif->neigh_list, | |
9665b745 IS |
1272 | rif_list_node) |
1273 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1274 | } | |
1275 | ||
c53b8e1b IS |
1276 | struct mlxsw_sp_nexthop_key { |
1277 | struct fib_nh *fib_nh; | |
1278 | }; | |
1279 | ||
a7ff87ac JP |
1280 | struct mlxsw_sp_nexthop { |
1281 | struct list_head neigh_list_node; /* member of neigh entry list */ | |
9665b745 | 1282 | struct list_head rif_list_node; |
a7ff87ac JP |
1283 | struct mlxsw_sp_nexthop_group *nh_grp; /* pointer back to the group |
1284 | * this belongs to | |
1285 | */ | |
c53b8e1b IS |
1286 | struct rhash_head ht_node; |
1287 | struct mlxsw_sp_nexthop_key key; | |
bf95233e | 1288 | struct mlxsw_sp_rif *rif; |
a7ff87ac JP |
1289 | u8 should_offload:1, /* set indicates this neigh is connected and |
1290 | * should be put to KVD linear area of this group. | |
1291 | */ | |
1292 | offloaded:1, /* set in case the neigh is actually put into | |
1293 | * KVD linear area of this group. | |
1294 | */ | |
1295 | update:1; /* set indicates that MAC of this neigh should be | |
1296 | * updated in HW | |
1297 | */ | |
1298 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1299 | }; | |
1300 | ||
e9ad5e7d IS |
1301 | struct mlxsw_sp_nexthop_group_key { |
1302 | struct fib_info *fi; | |
1303 | }; | |
1304 | ||
a7ff87ac | 1305 | struct mlxsw_sp_nexthop_group { |
e9ad5e7d | 1306 | struct rhash_head ht_node; |
a7ff87ac | 1307 | struct list_head fib_list; /* list of fib entries that use this group */ |
e9ad5e7d | 1308 | struct mlxsw_sp_nexthop_group_key key; |
b3e8d1eb IS |
1309 | u8 adj_index_valid:1, |
1310 | gateway:1; /* routes using the group use a gateway */ | |
a7ff87ac JP |
1311 | u32 adj_index; |
1312 | u16 ecmp_size; | |
1313 | u16 count; | |
1314 | struct mlxsw_sp_nexthop nexthops[0]; | |
bf95233e | 1315 | #define nh_rif nexthops[0].rif |
a7ff87ac JP |
1316 | }; |
1317 | ||
e9ad5e7d IS |
1318 | static const struct rhashtable_params mlxsw_sp_nexthop_group_ht_params = { |
1319 | .key_offset = offsetof(struct mlxsw_sp_nexthop_group, key), | |
1320 | .head_offset = offsetof(struct mlxsw_sp_nexthop_group, ht_node), | |
1321 | .key_len = sizeof(struct mlxsw_sp_nexthop_group_key), | |
1322 | }; | |
1323 | ||
1324 | static int mlxsw_sp_nexthop_group_insert(struct mlxsw_sp *mlxsw_sp, | |
1325 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1326 | { | |
9011b677 | 1327 | return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
1328 | &nh_grp->ht_node, |
1329 | mlxsw_sp_nexthop_group_ht_params); | |
1330 | } | |
1331 | ||
1332 | static void mlxsw_sp_nexthop_group_remove(struct mlxsw_sp *mlxsw_sp, | |
1333 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1334 | { | |
9011b677 | 1335 | rhashtable_remove_fast(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
1336 | &nh_grp->ht_node, |
1337 | mlxsw_sp_nexthop_group_ht_params); | |
1338 | } | |
1339 | ||
1340 | static struct mlxsw_sp_nexthop_group * | |
1341 | mlxsw_sp_nexthop_group_lookup(struct mlxsw_sp *mlxsw_sp, | |
1342 | struct mlxsw_sp_nexthop_group_key key) | |
1343 | { | |
9011b677 | 1344 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, &key, |
e9ad5e7d IS |
1345 | mlxsw_sp_nexthop_group_ht_params); |
1346 | } | |
1347 | ||
c53b8e1b IS |
1348 | static const struct rhashtable_params mlxsw_sp_nexthop_ht_params = { |
1349 | .key_offset = offsetof(struct mlxsw_sp_nexthop, key), | |
1350 | .head_offset = offsetof(struct mlxsw_sp_nexthop, ht_node), | |
1351 | .key_len = sizeof(struct mlxsw_sp_nexthop_key), | |
1352 | }; | |
1353 | ||
1354 | static int mlxsw_sp_nexthop_insert(struct mlxsw_sp *mlxsw_sp, | |
1355 | struct mlxsw_sp_nexthop *nh) | |
1356 | { | |
9011b677 | 1357 | return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_ht, |
c53b8e1b IS |
1358 | &nh->ht_node, mlxsw_sp_nexthop_ht_params); |
1359 | } | |
1360 | ||
1361 | static void mlxsw_sp_nexthop_remove(struct mlxsw_sp *mlxsw_sp, | |
1362 | struct mlxsw_sp_nexthop *nh) | |
1363 | { | |
9011b677 | 1364 | rhashtable_remove_fast(&mlxsw_sp->router->nexthop_ht, &nh->ht_node, |
c53b8e1b IS |
1365 | mlxsw_sp_nexthop_ht_params); |
1366 | } | |
1367 | ||
ad178c8e IS |
1368 | static struct mlxsw_sp_nexthop * |
1369 | mlxsw_sp_nexthop_lookup(struct mlxsw_sp *mlxsw_sp, | |
1370 | struct mlxsw_sp_nexthop_key key) | |
1371 | { | |
9011b677 | 1372 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_ht, &key, |
ad178c8e IS |
1373 | mlxsw_sp_nexthop_ht_params); |
1374 | } | |
1375 | ||
a7ff87ac | 1376 | static int mlxsw_sp_adj_index_mass_update_vr(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 1377 | const struct mlxsw_sp_fib *fib, |
a7ff87ac JP |
1378 | u32 adj_index, u16 ecmp_size, |
1379 | u32 new_adj_index, | |
1380 | u16 new_ecmp_size) | |
1381 | { | |
1382 | char raleu_pl[MLXSW_REG_RALEU_LEN]; | |
1383 | ||
1a9234e6 | 1384 | mlxsw_reg_raleu_pack(raleu_pl, |
76610ebb IS |
1385 | (enum mlxsw_reg_ralxx_protocol) fib->proto, |
1386 | fib->vr->id, adj_index, ecmp_size, new_adj_index, | |
1a9234e6 | 1387 | new_ecmp_size); |
a7ff87ac JP |
1388 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raleu), raleu_pl); |
1389 | } | |
1390 | ||
1391 | static int mlxsw_sp_adj_index_mass_update(struct mlxsw_sp *mlxsw_sp, | |
1392 | struct mlxsw_sp_nexthop_group *nh_grp, | |
1393 | u32 old_adj_index, u16 old_ecmp_size) | |
1394 | { | |
1395 | struct mlxsw_sp_fib_entry *fib_entry; | |
76610ebb | 1396 | struct mlxsw_sp_fib *fib = NULL; |
a7ff87ac JP |
1397 | int err; |
1398 | ||
1399 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
76610ebb | 1400 | if (fib == fib_entry->fib_node->fib) |
a7ff87ac | 1401 | continue; |
76610ebb IS |
1402 | fib = fib_entry->fib_node->fib; |
1403 | err = mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, fib, | |
a7ff87ac JP |
1404 | old_adj_index, |
1405 | old_ecmp_size, | |
1406 | nh_grp->adj_index, | |
1407 | nh_grp->ecmp_size); | |
1408 | if (err) | |
1409 | return err; | |
1410 | } | |
1411 | return 0; | |
1412 | } | |
1413 | ||
1414 | static int mlxsw_sp_nexthop_mac_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, | |
1415 | struct mlxsw_sp_nexthop *nh) | |
1416 | { | |
1417 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
1418 | char ratr_pl[MLXSW_REG_RATR_LEN]; | |
1419 | ||
1420 | mlxsw_reg_ratr_pack(ratr_pl, MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY, | |
1421 | true, adj_index, neigh_entry->rif); | |
1422 | mlxsw_reg_ratr_eth_entry_pack(ratr_pl, neigh_entry->ha); | |
1423 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl); | |
1424 | } | |
1425 | ||
1426 | static int | |
1427 | mlxsw_sp_nexthop_group_mac_update(struct mlxsw_sp *mlxsw_sp, | |
a59b7e02 IS |
1428 | struct mlxsw_sp_nexthop_group *nh_grp, |
1429 | bool reallocate) | |
a7ff87ac JP |
1430 | { |
1431 | u32 adj_index = nh_grp->adj_index; /* base */ | |
1432 | struct mlxsw_sp_nexthop *nh; | |
1433 | int i; | |
1434 | int err; | |
1435 | ||
1436 | for (i = 0; i < nh_grp->count; i++) { | |
1437 | nh = &nh_grp->nexthops[i]; | |
1438 | ||
1439 | if (!nh->should_offload) { | |
1440 | nh->offloaded = 0; | |
1441 | continue; | |
1442 | } | |
1443 | ||
a59b7e02 | 1444 | if (nh->update || reallocate) { |
a7ff87ac JP |
1445 | err = mlxsw_sp_nexthop_mac_update(mlxsw_sp, |
1446 | adj_index, nh); | |
1447 | if (err) | |
1448 | return err; | |
1449 | nh->update = 0; | |
1450 | nh->offloaded = 1; | |
1451 | } | |
1452 | adj_index++; | |
1453 | } | |
1454 | return 0; | |
1455 | } | |
1456 | ||
1457 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
1458 | struct mlxsw_sp_fib_entry *fib_entry); | |
1459 | ||
1460 | static int | |
1461 | mlxsw_sp_nexthop_fib_entries_update(struct mlxsw_sp *mlxsw_sp, | |
1462 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1463 | { | |
1464 | struct mlxsw_sp_fib_entry *fib_entry; | |
1465 | int err; | |
1466 | ||
1467 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
1468 | err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
1469 | if (err) | |
1470 | return err; | |
1471 | } | |
1472 | return 0; | |
1473 | } | |
1474 | ||
1475 | static void | |
1476 | mlxsw_sp_nexthop_group_refresh(struct mlxsw_sp *mlxsw_sp, | |
1477 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1478 | { | |
1479 | struct mlxsw_sp_nexthop *nh; | |
1480 | bool offload_change = false; | |
1481 | u32 adj_index; | |
1482 | u16 ecmp_size = 0; | |
1483 | bool old_adj_index_valid; | |
1484 | u32 old_adj_index; | |
1485 | u16 old_ecmp_size; | |
a7ff87ac JP |
1486 | int i; |
1487 | int err; | |
1488 | ||
b3e8d1eb IS |
1489 | if (!nh_grp->gateway) { |
1490 | mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1491 | return; | |
1492 | } | |
1493 | ||
a7ff87ac JP |
1494 | for (i = 0; i < nh_grp->count; i++) { |
1495 | nh = &nh_grp->nexthops[i]; | |
1496 | ||
1497 | if (nh->should_offload ^ nh->offloaded) { | |
1498 | offload_change = true; | |
1499 | if (nh->should_offload) | |
1500 | nh->update = 1; | |
1501 | } | |
1502 | if (nh->should_offload) | |
1503 | ecmp_size++; | |
1504 | } | |
1505 | if (!offload_change) { | |
1506 | /* Nothing was added or removed, so no need to reallocate. Just | |
1507 | * update MAC on existing adjacency indexes. | |
1508 | */ | |
a59b7e02 IS |
1509 | err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, |
1510 | false); | |
a7ff87ac JP |
1511 | if (err) { |
1512 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
1513 | goto set_trap; | |
1514 | } | |
1515 | return; | |
1516 | } | |
1517 | if (!ecmp_size) | |
1518 | /* No neigh of this group is connected so we just set | |
1519 | * the trap and let everthing flow through kernel. | |
1520 | */ | |
1521 | goto set_trap; | |
1522 | ||
13124443 AS |
1523 | err = mlxsw_sp_kvdl_alloc(mlxsw_sp, ecmp_size, &adj_index); |
1524 | if (err) { | |
a7ff87ac JP |
1525 | /* We ran out of KVD linear space, just set the |
1526 | * trap and let everything flow through kernel. | |
1527 | */ | |
1528 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to allocate KVD linear area for nexthop group.\n"); | |
1529 | goto set_trap; | |
1530 | } | |
a7ff87ac JP |
1531 | old_adj_index_valid = nh_grp->adj_index_valid; |
1532 | old_adj_index = nh_grp->adj_index; | |
1533 | old_ecmp_size = nh_grp->ecmp_size; | |
1534 | nh_grp->adj_index_valid = 1; | |
1535 | nh_grp->adj_index = adj_index; | |
1536 | nh_grp->ecmp_size = ecmp_size; | |
a59b7e02 | 1537 | err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, true); |
a7ff87ac JP |
1538 | if (err) { |
1539 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
1540 | goto set_trap; | |
1541 | } | |
1542 | ||
1543 | if (!old_adj_index_valid) { | |
1544 | /* The trap was set for fib entries, so we have to call | |
1545 | * fib entry update to unset it and use adjacency index. | |
1546 | */ | |
1547 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1548 | if (err) { | |
1549 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to add adjacency index to fib entries.\n"); | |
1550 | goto set_trap; | |
1551 | } | |
1552 | return; | |
1553 | } | |
1554 | ||
1555 | err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, nh_grp, | |
1556 | old_adj_index, old_ecmp_size); | |
1557 | mlxsw_sp_kvdl_free(mlxsw_sp, old_adj_index); | |
1558 | if (err) { | |
1559 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to mass-update adjacency index for nexthop group.\n"); | |
1560 | goto set_trap; | |
1561 | } | |
1562 | return; | |
1563 | ||
1564 | set_trap: | |
1565 | old_adj_index_valid = nh_grp->adj_index_valid; | |
1566 | nh_grp->adj_index_valid = 0; | |
1567 | for (i = 0; i < nh_grp->count; i++) { | |
1568 | nh = &nh_grp->nexthops[i]; | |
1569 | nh->offloaded = 0; | |
1570 | } | |
1571 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1572 | if (err) | |
1573 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set traps for fib entries.\n"); | |
1574 | if (old_adj_index_valid) | |
1575 | mlxsw_sp_kvdl_free(mlxsw_sp, nh_grp->adj_index); | |
1576 | } | |
1577 | ||
1578 | static void __mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp_nexthop *nh, | |
1579 | bool removing) | |
1580 | { | |
1581 | if (!removing && !nh->should_offload) | |
1582 | nh->should_offload = 1; | |
1583 | else if (removing && nh->offloaded) | |
1584 | nh->should_offload = 0; | |
1585 | nh->update = 1; | |
1586 | } | |
1587 | ||
1588 | static void | |
1589 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
1590 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1591 | bool removing) | |
1592 | { | |
1593 | struct mlxsw_sp_nexthop *nh; | |
1594 | ||
a7ff87ac JP |
1595 | list_for_each_entry(nh, &neigh_entry->nexthop_list, |
1596 | neigh_list_node) { | |
1597 | __mlxsw_sp_nexthop_neigh_update(nh, removing); | |
1598 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1599 | } | |
a7ff87ac JP |
1600 | } |
1601 | ||
9665b745 | 1602 | static void mlxsw_sp_nexthop_rif_init(struct mlxsw_sp_nexthop *nh, |
bf95233e | 1603 | struct mlxsw_sp_rif *rif) |
9665b745 | 1604 | { |
bf95233e | 1605 | if (nh->rif) |
9665b745 IS |
1606 | return; |
1607 | ||
bf95233e AS |
1608 | nh->rif = rif; |
1609 | list_add(&nh->rif_list_node, &rif->nexthop_list); | |
9665b745 IS |
1610 | } |
1611 | ||
1612 | static void mlxsw_sp_nexthop_rif_fini(struct mlxsw_sp_nexthop *nh) | |
1613 | { | |
bf95233e | 1614 | if (!nh->rif) |
9665b745 IS |
1615 | return; |
1616 | ||
1617 | list_del(&nh->rif_list_node); | |
bf95233e | 1618 | nh->rif = NULL; |
9665b745 IS |
1619 | } |
1620 | ||
a8c97014 IS |
1621 | static int mlxsw_sp_nexthop_neigh_init(struct mlxsw_sp *mlxsw_sp, |
1622 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
1623 | { |
1624 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
a8c97014 | 1625 | struct fib_nh *fib_nh = nh->key.fib_nh; |
a7ff87ac | 1626 | struct neighbour *n; |
93a87e5e | 1627 | u8 nud_state, dead; |
c53b8e1b IS |
1628 | int err; |
1629 | ||
ad178c8e | 1630 | if (!nh->nh_grp->gateway || nh->neigh_entry) |
b8399a1e IS |
1631 | return 0; |
1632 | ||
33b1341c JP |
1633 | /* Take a reference of neigh here ensuring that neigh would |
1634 | * not be detructed before the nexthop entry is finished. | |
1635 | * The reference is taken either in neigh_lookup() or | |
fd76d910 | 1636 | * in neigh_create() in case n is not found. |
33b1341c | 1637 | */ |
a8c97014 | 1638 | n = neigh_lookup(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev); |
33b1341c | 1639 | if (!n) { |
a8c97014 IS |
1640 | n = neigh_create(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev); |
1641 | if (IS_ERR(n)) | |
1642 | return PTR_ERR(n); | |
a7ff87ac | 1643 | neigh_event_send(n, NULL); |
33b1341c JP |
1644 | } |
1645 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); | |
1646 | if (!neigh_entry) { | |
5c8802f1 IS |
1647 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); |
1648 | if (IS_ERR(neigh_entry)) { | |
c53b8e1b IS |
1649 | err = -EINVAL; |
1650 | goto err_neigh_entry_create; | |
5c8802f1 | 1651 | } |
a7ff87ac | 1652 | } |
b2157149 YG |
1653 | |
1654 | /* If that is the first nexthop connected to that neigh, add to | |
1655 | * nexthop_neighs_list | |
1656 | */ | |
1657 | if (list_empty(&neigh_entry->nexthop_list)) | |
1658 | list_add_tail(&neigh_entry->nexthop_neighs_list_node, | |
9011b677 | 1659 | &mlxsw_sp->router->nexthop_neighs_list); |
b2157149 | 1660 | |
a7ff87ac JP |
1661 | nh->neigh_entry = neigh_entry; |
1662 | list_add_tail(&nh->neigh_list_node, &neigh_entry->nexthop_list); | |
1663 | read_lock_bh(&n->lock); | |
1664 | nud_state = n->nud_state; | |
93a87e5e | 1665 | dead = n->dead; |
a7ff87ac | 1666 | read_unlock_bh(&n->lock); |
93a87e5e | 1667 | __mlxsw_sp_nexthop_neigh_update(nh, !(nud_state & NUD_VALID && !dead)); |
a7ff87ac JP |
1668 | |
1669 | return 0; | |
c53b8e1b IS |
1670 | |
1671 | err_neigh_entry_create: | |
1672 | neigh_release(n); | |
c53b8e1b | 1673 | return err; |
a7ff87ac JP |
1674 | } |
1675 | ||
a8c97014 IS |
1676 | static void mlxsw_sp_nexthop_neigh_fini(struct mlxsw_sp *mlxsw_sp, |
1677 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
1678 | { |
1679 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
a8c97014 | 1680 | struct neighbour *n; |
a7ff87ac | 1681 | |
b8399a1e | 1682 | if (!neigh_entry) |
a8c97014 IS |
1683 | return; |
1684 | n = neigh_entry->key.n; | |
b8399a1e | 1685 | |
58312125 | 1686 | __mlxsw_sp_nexthop_neigh_update(nh, true); |
a7ff87ac | 1687 | list_del(&nh->neigh_list_node); |
e58be79e | 1688 | nh->neigh_entry = NULL; |
b2157149 YG |
1689 | |
1690 | /* If that is the last nexthop connected to that neigh, remove from | |
1691 | * nexthop_neighs_list | |
1692 | */ | |
e58be79e IS |
1693 | if (list_empty(&neigh_entry->nexthop_list)) |
1694 | list_del(&neigh_entry->nexthop_neighs_list_node); | |
b2157149 | 1695 | |
5c8802f1 IS |
1696 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) |
1697 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1698 | ||
1699 | neigh_release(n); | |
a8c97014 | 1700 | } |
c53b8e1b | 1701 | |
a8c97014 IS |
1702 | static int mlxsw_sp_nexthop_init(struct mlxsw_sp *mlxsw_sp, |
1703 | struct mlxsw_sp_nexthop_group *nh_grp, | |
1704 | struct mlxsw_sp_nexthop *nh, | |
1705 | struct fib_nh *fib_nh) | |
1706 | { | |
1707 | struct net_device *dev = fib_nh->nh_dev; | |
df6dd79b | 1708 | struct in_device *in_dev; |
bf95233e | 1709 | struct mlxsw_sp_rif *rif; |
a8c97014 IS |
1710 | int err; |
1711 | ||
1712 | nh->nh_grp = nh_grp; | |
1713 | nh->key.fib_nh = fib_nh; | |
1714 | err = mlxsw_sp_nexthop_insert(mlxsw_sp, nh); | |
1715 | if (err) | |
1716 | return err; | |
1717 | ||
97989ee0 IS |
1718 | if (!dev) |
1719 | return 0; | |
1720 | ||
df6dd79b IS |
1721 | in_dev = __in_dev_get_rtnl(dev); |
1722 | if (in_dev && IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) && | |
1723 | fib_nh->nh_flags & RTNH_F_LINKDOWN) | |
1724 | return 0; | |
1725 | ||
bf95233e AS |
1726 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
1727 | if (!rif) | |
a8c97014 | 1728 | return 0; |
bf95233e | 1729 | mlxsw_sp_nexthop_rif_init(nh, rif); |
a8c97014 IS |
1730 | |
1731 | err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); | |
1732 | if (err) | |
1733 | goto err_nexthop_neigh_init; | |
1734 | ||
1735 | return 0; | |
1736 | ||
1737 | err_nexthop_neigh_init: | |
1738 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); | |
1739 | return err; | |
1740 | } | |
1741 | ||
1742 | static void mlxsw_sp_nexthop_fini(struct mlxsw_sp *mlxsw_sp, | |
1743 | struct mlxsw_sp_nexthop *nh) | |
1744 | { | |
1745 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
9665b745 | 1746 | mlxsw_sp_nexthop_rif_fini(nh); |
c53b8e1b | 1747 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); |
a7ff87ac JP |
1748 | } |
1749 | ||
ad178c8e IS |
1750 | static void mlxsw_sp_nexthop_event(struct mlxsw_sp *mlxsw_sp, |
1751 | unsigned long event, struct fib_nh *fib_nh) | |
1752 | { | |
1753 | struct mlxsw_sp_nexthop_key key; | |
1754 | struct mlxsw_sp_nexthop *nh; | |
bf95233e | 1755 | struct mlxsw_sp_rif *rif; |
ad178c8e | 1756 | |
9011b677 | 1757 | if (mlxsw_sp->router->aborted) |
ad178c8e IS |
1758 | return; |
1759 | ||
1760 | key.fib_nh = fib_nh; | |
1761 | nh = mlxsw_sp_nexthop_lookup(mlxsw_sp, key); | |
1762 | if (WARN_ON_ONCE(!nh)) | |
1763 | return; | |
1764 | ||
bf95233e AS |
1765 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, fib_nh->nh_dev); |
1766 | if (!rif) | |
ad178c8e IS |
1767 | return; |
1768 | ||
1769 | switch (event) { | |
1770 | case FIB_EVENT_NH_ADD: | |
bf95233e | 1771 | mlxsw_sp_nexthop_rif_init(nh, rif); |
ad178c8e IS |
1772 | mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); |
1773 | break; | |
1774 | case FIB_EVENT_NH_DEL: | |
1775 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
9665b745 | 1776 | mlxsw_sp_nexthop_rif_fini(nh); |
ad178c8e IS |
1777 | break; |
1778 | } | |
1779 | ||
1780 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1781 | } | |
1782 | ||
9665b745 | 1783 | static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, |
bf95233e | 1784 | struct mlxsw_sp_rif *rif) |
9665b745 IS |
1785 | { |
1786 | struct mlxsw_sp_nexthop *nh, *tmp; | |
1787 | ||
bf95233e | 1788 | list_for_each_entry_safe(nh, tmp, &rif->nexthop_list, rif_list_node) { |
9665b745 IS |
1789 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); |
1790 | mlxsw_sp_nexthop_rif_fini(nh); | |
1791 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1792 | } | |
1793 | } | |
1794 | ||
a7ff87ac JP |
1795 | static struct mlxsw_sp_nexthop_group * |
1796 | mlxsw_sp_nexthop_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi) | |
1797 | { | |
1798 | struct mlxsw_sp_nexthop_group *nh_grp; | |
1799 | struct mlxsw_sp_nexthop *nh; | |
1800 | struct fib_nh *fib_nh; | |
1801 | size_t alloc_size; | |
1802 | int i; | |
1803 | int err; | |
1804 | ||
1805 | alloc_size = sizeof(*nh_grp) + | |
1806 | fi->fib_nhs * sizeof(struct mlxsw_sp_nexthop); | |
1807 | nh_grp = kzalloc(alloc_size, GFP_KERNEL); | |
1808 | if (!nh_grp) | |
1809 | return ERR_PTR(-ENOMEM); | |
1810 | INIT_LIST_HEAD(&nh_grp->fib_list); | |
b3e8d1eb | 1811 | nh_grp->gateway = fi->fib_nh->nh_scope == RT_SCOPE_LINK; |
a7ff87ac | 1812 | nh_grp->count = fi->fib_nhs; |
e9ad5e7d | 1813 | nh_grp->key.fi = fi; |
a7ff87ac JP |
1814 | for (i = 0; i < nh_grp->count; i++) { |
1815 | nh = &nh_grp->nexthops[i]; | |
1816 | fib_nh = &fi->fib_nh[i]; | |
1817 | err = mlxsw_sp_nexthop_init(mlxsw_sp, nh_grp, nh, fib_nh); | |
1818 | if (err) | |
1819 | goto err_nexthop_init; | |
1820 | } | |
e9ad5e7d IS |
1821 | err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); |
1822 | if (err) | |
1823 | goto err_nexthop_group_insert; | |
a7ff87ac JP |
1824 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
1825 | return nh_grp; | |
1826 | ||
e9ad5e7d | 1827 | err_nexthop_group_insert: |
a7ff87ac | 1828 | err_nexthop_init: |
df6dd79b IS |
1829 | for (i--; i >= 0; i--) { |
1830 | nh = &nh_grp->nexthops[i]; | |
a7ff87ac | 1831 | mlxsw_sp_nexthop_fini(mlxsw_sp, nh); |
df6dd79b | 1832 | } |
a7ff87ac JP |
1833 | kfree(nh_grp); |
1834 | return ERR_PTR(err); | |
1835 | } | |
1836 | ||
1837 | static void | |
1838 | mlxsw_sp_nexthop_group_destroy(struct mlxsw_sp *mlxsw_sp, | |
1839 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1840 | { | |
1841 | struct mlxsw_sp_nexthop *nh; | |
1842 | int i; | |
1843 | ||
e9ad5e7d | 1844 | mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); |
a7ff87ac JP |
1845 | for (i = 0; i < nh_grp->count; i++) { |
1846 | nh = &nh_grp->nexthops[i]; | |
1847 | mlxsw_sp_nexthop_fini(mlxsw_sp, nh); | |
1848 | } | |
58312125 IS |
1849 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
1850 | WARN_ON_ONCE(nh_grp->adj_index_valid); | |
a7ff87ac JP |
1851 | kfree(nh_grp); |
1852 | } | |
1853 | ||
a7ff87ac JP |
1854 | static int mlxsw_sp_nexthop_group_get(struct mlxsw_sp *mlxsw_sp, |
1855 | struct mlxsw_sp_fib_entry *fib_entry, | |
1856 | struct fib_info *fi) | |
1857 | { | |
e9ad5e7d | 1858 | struct mlxsw_sp_nexthop_group_key key; |
a7ff87ac JP |
1859 | struct mlxsw_sp_nexthop_group *nh_grp; |
1860 | ||
e9ad5e7d IS |
1861 | key.fi = fi; |
1862 | nh_grp = mlxsw_sp_nexthop_group_lookup(mlxsw_sp, key); | |
a7ff87ac JP |
1863 | if (!nh_grp) { |
1864 | nh_grp = mlxsw_sp_nexthop_group_create(mlxsw_sp, fi); | |
1865 | if (IS_ERR(nh_grp)) | |
1866 | return PTR_ERR(nh_grp); | |
1867 | } | |
1868 | list_add_tail(&fib_entry->nexthop_group_node, &nh_grp->fib_list); | |
1869 | fib_entry->nh_group = nh_grp; | |
1870 | return 0; | |
1871 | } | |
1872 | ||
1873 | static void mlxsw_sp_nexthop_group_put(struct mlxsw_sp *mlxsw_sp, | |
1874 | struct mlxsw_sp_fib_entry *fib_entry) | |
1875 | { | |
1876 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
1877 | ||
1878 | list_del(&fib_entry->nexthop_group_node); | |
1879 | if (!list_empty(&nh_grp->fib_list)) | |
1880 | return; | |
1881 | mlxsw_sp_nexthop_group_destroy(mlxsw_sp, nh_grp); | |
1882 | } | |
1883 | ||
013b20f9 IS |
1884 | static bool |
1885 | mlxsw_sp_fib_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) | |
1886 | { | |
1887 | struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group; | |
1888 | ||
9aecce1c IS |
1889 | if (fib_entry->params.tos) |
1890 | return false; | |
1891 | ||
013b20f9 IS |
1892 | switch (fib_entry->type) { |
1893 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
1894 | return !!nh_group->adj_index_valid; | |
1895 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: | |
70ad3506 | 1896 | return !!nh_group->nh_rif; |
013b20f9 IS |
1897 | default: |
1898 | return false; | |
1899 | } | |
1900 | } | |
1901 | ||
1902 | static void mlxsw_sp_fib_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) | |
1903 | { | |
1904 | fib_entry->offloaded = true; | |
1905 | ||
76610ebb | 1906 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 IS |
1907 | case MLXSW_SP_L3_PROTO_IPV4: |
1908 | fib_info_offload_inc(fib_entry->nh_group->key.fi); | |
1909 | break; | |
1910 | case MLXSW_SP_L3_PROTO_IPV6: | |
1911 | WARN_ON_ONCE(1); | |
1912 | } | |
1913 | } | |
1914 | ||
1915 | static void | |
1916 | mlxsw_sp_fib_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
1917 | { | |
76610ebb | 1918 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 IS |
1919 | case MLXSW_SP_L3_PROTO_IPV4: |
1920 | fib_info_offload_dec(fib_entry->nh_group->key.fi); | |
1921 | break; | |
1922 | case MLXSW_SP_L3_PROTO_IPV6: | |
1923 | WARN_ON_ONCE(1); | |
1924 | } | |
1925 | ||
1926 | fib_entry->offloaded = false; | |
1927 | } | |
1928 | ||
1929 | static void | |
1930 | mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry, | |
1931 | enum mlxsw_reg_ralue_op op, int err) | |
1932 | { | |
1933 | switch (op) { | |
1934 | case MLXSW_REG_RALUE_OP_WRITE_DELETE: | |
1935 | if (!fib_entry->offloaded) | |
1936 | return; | |
1937 | return mlxsw_sp_fib_entry_offload_unset(fib_entry); | |
1938 | case MLXSW_REG_RALUE_OP_WRITE_WRITE: | |
1939 | if (err) | |
1940 | return; | |
1941 | if (mlxsw_sp_fib_entry_should_offload(fib_entry) && | |
1942 | !fib_entry->offloaded) | |
1943 | mlxsw_sp_fib_entry_offload_set(fib_entry); | |
1944 | else if (!mlxsw_sp_fib_entry_should_offload(fib_entry) && | |
1945 | fib_entry->offloaded) | |
1946 | mlxsw_sp_fib_entry_offload_unset(fib_entry); | |
1947 | return; | |
1948 | default: | |
1949 | return; | |
1950 | } | |
1951 | } | |
1952 | ||
a7ff87ac JP |
1953 | static int mlxsw_sp_fib_entry_op4_remote(struct mlxsw_sp *mlxsw_sp, |
1954 | struct mlxsw_sp_fib_entry *fib_entry, | |
1955 | enum mlxsw_reg_ralue_op op) | |
1956 | { | |
1957 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
76610ebb | 1958 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
9aecce1c | 1959 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
a7ff87ac JP |
1960 | enum mlxsw_reg_ralue_trap_action trap_action; |
1961 | u16 trap_id = 0; | |
1962 | u32 adjacency_index = 0; | |
1963 | u16 ecmp_size = 0; | |
1964 | ||
1965 | /* In case the nexthop group adjacency index is valid, use it | |
1966 | * with provided ECMP size. Otherwise, setup trap and pass | |
1967 | * traffic to kernel. | |
1968 | */ | |
4b411477 | 1969 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { |
a7ff87ac JP |
1970 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; |
1971 | adjacency_index = fib_entry->nh_group->adj_index; | |
1972 | ecmp_size = fib_entry->nh_group->ecmp_size; | |
1973 | } else { | |
1974 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
1975 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
1976 | } | |
1977 | ||
1a9234e6 | 1978 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
1979 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
1980 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 1981 | *p_dip); |
a7ff87ac JP |
1982 | mlxsw_reg_ralue_act_remote_pack(ralue_pl, trap_action, trap_id, |
1983 | adjacency_index, ecmp_size); | |
1984 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
1985 | } | |
1986 | ||
61c503f9 JP |
1987 | static int mlxsw_sp_fib_entry_op4_local(struct mlxsw_sp *mlxsw_sp, |
1988 | struct mlxsw_sp_fib_entry *fib_entry, | |
1989 | enum mlxsw_reg_ralue_op op) | |
1990 | { | |
bf95233e | 1991 | struct mlxsw_sp_rif *rif = fib_entry->nh_group->nh_rif; |
76610ebb | 1992 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
70ad3506 | 1993 | enum mlxsw_reg_ralue_trap_action trap_action; |
61c503f9 | 1994 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
9aecce1c | 1995 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
70ad3506 | 1996 | u16 trap_id = 0; |
bf95233e | 1997 | u16 rif_index = 0; |
70ad3506 IS |
1998 | |
1999 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { | |
2000 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; | |
bf95233e | 2001 | rif_index = rif->rif_index; |
70ad3506 IS |
2002 | } else { |
2003 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
2004 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
2005 | } | |
61c503f9 | 2006 | |
1a9234e6 | 2007 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
2008 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
2009 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 2010 | *p_dip); |
bf95233e AS |
2011 | mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id, |
2012 | rif_index); | |
61c503f9 JP |
2013 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); |
2014 | } | |
2015 | ||
2016 | static int mlxsw_sp_fib_entry_op4_trap(struct mlxsw_sp *mlxsw_sp, | |
2017 | struct mlxsw_sp_fib_entry *fib_entry, | |
2018 | enum mlxsw_reg_ralue_op op) | |
2019 | { | |
76610ebb | 2020 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
61c503f9 | 2021 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
9aecce1c | 2022 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
61c503f9 | 2023 | |
1a9234e6 | 2024 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
2025 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
2026 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 2027 | *p_dip); |
61c503f9 JP |
2028 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); |
2029 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
2030 | } | |
2031 | ||
2032 | static int mlxsw_sp_fib_entry_op4(struct mlxsw_sp *mlxsw_sp, | |
2033 | struct mlxsw_sp_fib_entry *fib_entry, | |
2034 | enum mlxsw_reg_ralue_op op) | |
2035 | { | |
2036 | switch (fib_entry->type) { | |
2037 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
a7ff87ac | 2038 | return mlxsw_sp_fib_entry_op4_remote(mlxsw_sp, fib_entry, op); |
61c503f9 JP |
2039 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: |
2040 | return mlxsw_sp_fib_entry_op4_local(mlxsw_sp, fib_entry, op); | |
2041 | case MLXSW_SP_FIB_ENTRY_TYPE_TRAP: | |
2042 | return mlxsw_sp_fib_entry_op4_trap(mlxsw_sp, fib_entry, op); | |
2043 | } | |
2044 | return -EINVAL; | |
2045 | } | |
2046 | ||
2047 | static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, | |
2048 | struct mlxsw_sp_fib_entry *fib_entry, | |
2049 | enum mlxsw_reg_ralue_op op) | |
2050 | { | |
013b20f9 IS |
2051 | int err = -EINVAL; |
2052 | ||
76610ebb | 2053 | switch (fib_entry->fib_node->fib->proto) { |
61c503f9 | 2054 | case MLXSW_SP_L3_PROTO_IPV4: |
013b20f9 IS |
2055 | err = mlxsw_sp_fib_entry_op4(mlxsw_sp, fib_entry, op); |
2056 | break; | |
61c503f9 | 2057 | case MLXSW_SP_L3_PROTO_IPV6: |
013b20f9 | 2058 | return err; |
61c503f9 | 2059 | } |
013b20f9 IS |
2060 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, err); |
2061 | return err; | |
61c503f9 JP |
2062 | } |
2063 | ||
2064 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
2065 | struct mlxsw_sp_fib_entry *fib_entry) | |
2066 | { | |
7146da31 JP |
2067 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, |
2068 | MLXSW_REG_RALUE_OP_WRITE_WRITE); | |
61c503f9 JP |
2069 | } |
2070 | ||
2071 | static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp, | |
2072 | struct mlxsw_sp_fib_entry *fib_entry) | |
2073 | { | |
2074 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, | |
2075 | MLXSW_REG_RALUE_OP_WRITE_DELETE); | |
2076 | } | |
2077 | ||
61c503f9 | 2078 | static int |
013b20f9 IS |
2079 | mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp, |
2080 | const struct fib_entry_notifier_info *fen_info, | |
2081 | struct mlxsw_sp_fib_entry *fib_entry) | |
61c503f9 | 2082 | { |
b45f64d1 | 2083 | struct fib_info *fi = fen_info->fi; |
61c503f9 | 2084 | |
97989ee0 IS |
2085 | switch (fen_info->type) { |
2086 | case RTN_BROADCAST: /* fall through */ | |
2087 | case RTN_LOCAL: | |
61c503f9 JP |
2088 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; |
2089 | return 0; | |
97989ee0 IS |
2090 | case RTN_UNREACHABLE: /* fall through */ |
2091 | case RTN_BLACKHOLE: /* fall through */ | |
2092 | case RTN_PROHIBIT: | |
2093 | /* Packets hitting these routes need to be trapped, but | |
2094 | * can do so with a lower priority than packets directed | |
2095 | * at the host, so use action type local instead of trap. | |
2096 | */ | |
61c503f9 | 2097 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; |
97989ee0 IS |
2098 | return 0; |
2099 | case RTN_UNICAST: | |
2100 | if (fi->fib_nh->nh_scope != RT_SCOPE_LINK) | |
2101 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
2102 | else | |
2103 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; | |
2104 | return 0; | |
2105 | default: | |
2106 | return -EINVAL; | |
2107 | } | |
a7ff87ac JP |
2108 | } |
2109 | ||
5b004412 | 2110 | static struct mlxsw_sp_fib_entry * |
9aecce1c IS |
2111 | mlxsw_sp_fib4_entry_create(struct mlxsw_sp *mlxsw_sp, |
2112 | struct mlxsw_sp_fib_node *fib_node, | |
2113 | const struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 2114 | { |
61c503f9 | 2115 | struct mlxsw_sp_fib_entry *fib_entry; |
61c503f9 JP |
2116 | int err; |
2117 | ||
9aecce1c | 2118 | fib_entry = kzalloc(sizeof(*fib_entry), GFP_KERNEL); |
61c503f9 JP |
2119 | if (!fib_entry) { |
2120 | err = -ENOMEM; | |
9aecce1c | 2121 | goto err_fib_entry_alloc; |
61c503f9 | 2122 | } |
61c503f9 | 2123 | |
013b20f9 | 2124 | err = mlxsw_sp_fib4_entry_type_set(mlxsw_sp, fen_info, fib_entry); |
61c503f9 | 2125 | if (err) |
013b20f9 | 2126 | goto err_fib4_entry_type_set; |
61c503f9 | 2127 | |
9aecce1c | 2128 | err = mlxsw_sp_nexthop_group_get(mlxsw_sp, fib_entry, fen_info->fi); |
b8399a1e IS |
2129 | if (err) |
2130 | goto err_nexthop_group_get; | |
2131 | ||
9aecce1c IS |
2132 | fib_entry->params.prio = fen_info->fi->fib_priority; |
2133 | fib_entry->params.tb_id = fen_info->tb_id; | |
2134 | fib_entry->params.type = fen_info->type; | |
2135 | fib_entry->params.tos = fen_info->tos; | |
2136 | ||
2137 | fib_entry->fib_node = fib_node; | |
2138 | ||
5b004412 JP |
2139 | return fib_entry; |
2140 | ||
b8399a1e | 2141 | err_nexthop_group_get: |
013b20f9 | 2142 | err_fib4_entry_type_set: |
9aecce1c IS |
2143 | kfree(fib_entry); |
2144 | err_fib_entry_alloc: | |
5b004412 JP |
2145 | return ERR_PTR(err); |
2146 | } | |
2147 | ||
9aecce1c IS |
2148 | static void mlxsw_sp_fib4_entry_destroy(struct mlxsw_sp *mlxsw_sp, |
2149 | struct mlxsw_sp_fib_entry *fib_entry) | |
2150 | { | |
2151 | mlxsw_sp_nexthop_group_put(mlxsw_sp, fib_entry); | |
2152 | kfree(fib_entry); | |
2153 | } | |
2154 | ||
2155 | static struct mlxsw_sp_fib_node * | |
2156 | mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp, | |
2157 | const struct fib_entry_notifier_info *fen_info); | |
2158 | ||
5b004412 | 2159 | static struct mlxsw_sp_fib_entry * |
9aecce1c IS |
2160 | mlxsw_sp_fib4_entry_lookup(struct mlxsw_sp *mlxsw_sp, |
2161 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 2162 | { |
9aecce1c IS |
2163 | struct mlxsw_sp_fib_entry *fib_entry; |
2164 | struct mlxsw_sp_fib_node *fib_node; | |
5b004412 | 2165 | |
9aecce1c IS |
2166 | fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info); |
2167 | if (IS_ERR(fib_node)) | |
2168 | return NULL; | |
2169 | ||
2170 | list_for_each_entry(fib_entry, &fib_node->entry_list, list) { | |
2171 | if (fib_entry->params.tb_id == fen_info->tb_id && | |
2172 | fib_entry->params.tos == fen_info->tos && | |
2173 | fib_entry->params.type == fen_info->type && | |
2174 | fib_entry->nh_group->key.fi == fen_info->fi) { | |
2175 | return fib_entry; | |
2176 | } | |
2177 | } | |
2178 | ||
2179 | return NULL; | |
2180 | } | |
2181 | ||
2182 | static const struct rhashtable_params mlxsw_sp_fib_ht_params = { | |
2183 | .key_offset = offsetof(struct mlxsw_sp_fib_node, key), | |
2184 | .head_offset = offsetof(struct mlxsw_sp_fib_node, ht_node), | |
2185 | .key_len = sizeof(struct mlxsw_sp_fib_key), | |
2186 | .automatic_shrinking = true, | |
2187 | }; | |
2188 | ||
2189 | static int mlxsw_sp_fib_node_insert(struct mlxsw_sp_fib *fib, | |
2190 | struct mlxsw_sp_fib_node *fib_node) | |
2191 | { | |
2192 | return rhashtable_insert_fast(&fib->ht, &fib_node->ht_node, | |
2193 | mlxsw_sp_fib_ht_params); | |
2194 | } | |
2195 | ||
2196 | static void mlxsw_sp_fib_node_remove(struct mlxsw_sp_fib *fib, | |
2197 | struct mlxsw_sp_fib_node *fib_node) | |
2198 | { | |
2199 | rhashtable_remove_fast(&fib->ht, &fib_node->ht_node, | |
2200 | mlxsw_sp_fib_ht_params); | |
2201 | } | |
2202 | ||
2203 | static struct mlxsw_sp_fib_node * | |
2204 | mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr, | |
2205 | size_t addr_len, unsigned char prefix_len) | |
2206 | { | |
2207 | struct mlxsw_sp_fib_key key; | |
2208 | ||
2209 | memset(&key, 0, sizeof(key)); | |
2210 | memcpy(key.addr, addr, addr_len); | |
2211 | key.prefix_len = prefix_len; | |
2212 | return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params); | |
2213 | } | |
2214 | ||
2215 | static struct mlxsw_sp_fib_node * | |
76610ebb | 2216 | mlxsw_sp_fib_node_create(struct mlxsw_sp_fib *fib, const void *addr, |
9aecce1c IS |
2217 | size_t addr_len, unsigned char prefix_len) |
2218 | { | |
2219 | struct mlxsw_sp_fib_node *fib_node; | |
2220 | ||
2221 | fib_node = kzalloc(sizeof(*fib_node), GFP_KERNEL); | |
2222 | if (!fib_node) | |
5b004412 JP |
2223 | return NULL; |
2224 | ||
9aecce1c | 2225 | INIT_LIST_HEAD(&fib_node->entry_list); |
76610ebb | 2226 | list_add(&fib_node->list, &fib->node_list); |
9aecce1c IS |
2227 | memcpy(fib_node->key.addr, addr, addr_len); |
2228 | fib_node->key.prefix_len = prefix_len; | |
9aecce1c IS |
2229 | |
2230 | return fib_node; | |
2231 | } | |
2232 | ||
2233 | static void mlxsw_sp_fib_node_destroy(struct mlxsw_sp_fib_node *fib_node) | |
2234 | { | |
9aecce1c IS |
2235 | list_del(&fib_node->list); |
2236 | WARN_ON(!list_empty(&fib_node->entry_list)); | |
2237 | kfree(fib_node); | |
2238 | } | |
2239 | ||
2240 | static bool | |
2241 | mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node, | |
2242 | const struct mlxsw_sp_fib_entry *fib_entry) | |
2243 | { | |
2244 | return list_first_entry(&fib_node->entry_list, | |
2245 | struct mlxsw_sp_fib_entry, list) == fib_entry; | |
2246 | } | |
2247 | ||
2248 | static void mlxsw_sp_fib_node_prefix_inc(struct mlxsw_sp_fib_node *fib_node) | |
2249 | { | |
2250 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 2251 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
2252 | |
2253 | if (fib->prefix_ref_count[prefix_len]++ == 0) | |
2254 | mlxsw_sp_prefix_usage_set(&fib->prefix_usage, prefix_len); | |
2255 | } | |
2256 | ||
2257 | static void mlxsw_sp_fib_node_prefix_dec(struct mlxsw_sp_fib_node *fib_node) | |
2258 | { | |
2259 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 2260 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
2261 | |
2262 | if (--fib->prefix_ref_count[prefix_len] == 0) | |
2263 | mlxsw_sp_prefix_usage_clear(&fib->prefix_usage, prefix_len); | |
5b004412 JP |
2264 | } |
2265 | ||
76610ebb IS |
2266 | static int mlxsw_sp_fib_node_init(struct mlxsw_sp *mlxsw_sp, |
2267 | struct mlxsw_sp_fib_node *fib_node, | |
2268 | struct mlxsw_sp_fib *fib) | |
2269 | { | |
2270 | struct mlxsw_sp_prefix_usage req_prefix_usage; | |
2271 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
2272 | int err; | |
2273 | ||
2274 | err = mlxsw_sp_fib_node_insert(fib, fib_node); | |
2275 | if (err) | |
2276 | return err; | |
2277 | fib_node->fib = fib; | |
2278 | ||
2279 | mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, &fib->prefix_usage); | |
2280 | mlxsw_sp_prefix_usage_set(&req_prefix_usage, fib_node->key.prefix_len); | |
2281 | ||
2282 | if (!mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) { | |
2283 | err = mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib, | |
2284 | &req_prefix_usage); | |
2285 | if (err) | |
2286 | goto err_tree_check; | |
2287 | } else { | |
2288 | lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, | |
2289 | fib->proto); | |
2290 | if (IS_ERR(lpm_tree)) | |
2291 | return PTR_ERR(lpm_tree); | |
2292 | fib->lpm_tree = lpm_tree; | |
2293 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib); | |
2294 | if (err) | |
2295 | goto err_tree_bind; | |
2296 | } | |
2297 | ||
2298 | mlxsw_sp_fib_node_prefix_inc(fib_node); | |
2299 | ||
2300 | return 0; | |
2301 | ||
2302 | err_tree_bind: | |
2303 | fib->lpm_tree = NULL; | |
2304 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
2305 | err_tree_check: | |
2306 | fib_node->fib = NULL; | |
2307 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
2308 | return err; | |
2309 | } | |
2310 | ||
2311 | static void mlxsw_sp_fib_node_fini(struct mlxsw_sp *mlxsw_sp, | |
2312 | struct mlxsw_sp_fib_node *fib_node) | |
2313 | { | |
2314 | struct mlxsw_sp_lpm_tree *lpm_tree = fib_node->fib->lpm_tree; | |
2315 | struct mlxsw_sp_fib *fib = fib_node->fib; | |
2316 | ||
2317 | mlxsw_sp_fib_node_prefix_dec(fib_node); | |
2318 | ||
2319 | if (mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) { | |
2320 | mlxsw_sp_vr_lpm_tree_unbind(mlxsw_sp, fib); | |
2321 | fib->lpm_tree = NULL; | |
2322 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
2323 | } else { | |
2324 | mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib, &fib->prefix_usage); | |
2325 | } | |
2326 | ||
2327 | fib_node->fib = NULL; | |
2328 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
2329 | } | |
2330 | ||
9aecce1c IS |
2331 | static struct mlxsw_sp_fib_node * |
2332 | mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp, | |
2333 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 2334 | { |
9aecce1c | 2335 | struct mlxsw_sp_fib_node *fib_node; |
76610ebb | 2336 | struct mlxsw_sp_fib *fib; |
9aecce1c IS |
2337 | struct mlxsw_sp_vr *vr; |
2338 | int err; | |
2339 | ||
76610ebb | 2340 | vr = mlxsw_sp_vr_get(mlxsw_sp, fen_info->tb_id); |
9aecce1c IS |
2341 | if (IS_ERR(vr)) |
2342 | return ERR_CAST(vr); | |
76610ebb | 2343 | fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV4); |
9aecce1c | 2344 | |
76610ebb | 2345 | fib_node = mlxsw_sp_fib_node_lookup(fib, &fen_info->dst, |
9aecce1c IS |
2346 | sizeof(fen_info->dst), |
2347 | fen_info->dst_len); | |
2348 | if (fib_node) | |
2349 | return fib_node; | |
5b004412 | 2350 | |
76610ebb | 2351 | fib_node = mlxsw_sp_fib_node_create(fib, &fen_info->dst, |
9aecce1c IS |
2352 | sizeof(fen_info->dst), |
2353 | fen_info->dst_len); | |
2354 | if (!fib_node) { | |
2355 | err = -ENOMEM; | |
2356 | goto err_fib_node_create; | |
5b004412 | 2357 | } |
9aecce1c | 2358 | |
76610ebb IS |
2359 | err = mlxsw_sp_fib_node_init(mlxsw_sp, fib_node, fib); |
2360 | if (err) | |
2361 | goto err_fib_node_init; | |
2362 | ||
9aecce1c IS |
2363 | return fib_node; |
2364 | ||
76610ebb IS |
2365 | err_fib_node_init: |
2366 | mlxsw_sp_fib_node_destroy(fib_node); | |
9aecce1c | 2367 | err_fib_node_create: |
76610ebb | 2368 | mlxsw_sp_vr_put(vr); |
9aecce1c | 2369 | return ERR_PTR(err); |
5b004412 JP |
2370 | } |
2371 | ||
9aecce1c IS |
2372 | static void mlxsw_sp_fib4_node_put(struct mlxsw_sp *mlxsw_sp, |
2373 | struct mlxsw_sp_fib_node *fib_node) | |
5b004412 | 2374 | { |
76610ebb | 2375 | struct mlxsw_sp_vr *vr = fib_node->fib->vr; |
5b004412 | 2376 | |
9aecce1c IS |
2377 | if (!list_empty(&fib_node->entry_list)) |
2378 | return; | |
76610ebb | 2379 | mlxsw_sp_fib_node_fini(mlxsw_sp, fib_node); |
9aecce1c | 2380 | mlxsw_sp_fib_node_destroy(fib_node); |
76610ebb | 2381 | mlxsw_sp_vr_put(vr); |
61c503f9 JP |
2382 | } |
2383 | ||
9aecce1c IS |
2384 | static struct mlxsw_sp_fib_entry * |
2385 | mlxsw_sp_fib4_node_entry_find(const struct mlxsw_sp_fib_node *fib_node, | |
2386 | const struct mlxsw_sp_fib_entry_params *params) | |
61c503f9 | 2387 | { |
61c503f9 | 2388 | struct mlxsw_sp_fib_entry *fib_entry; |
9aecce1c IS |
2389 | |
2390 | list_for_each_entry(fib_entry, &fib_node->entry_list, list) { | |
2391 | if (fib_entry->params.tb_id > params->tb_id) | |
2392 | continue; | |
2393 | if (fib_entry->params.tb_id != params->tb_id) | |
2394 | break; | |
2395 | if (fib_entry->params.tos > params->tos) | |
2396 | continue; | |
2397 | if (fib_entry->params.prio >= params->prio || | |
2398 | fib_entry->params.tos < params->tos) | |
2399 | return fib_entry; | |
2400 | } | |
2401 | ||
2402 | return NULL; | |
2403 | } | |
2404 | ||
4283bce5 IS |
2405 | static int mlxsw_sp_fib4_node_list_append(struct mlxsw_sp_fib_entry *fib_entry, |
2406 | struct mlxsw_sp_fib_entry *new_entry) | |
2407 | { | |
2408 | struct mlxsw_sp_fib_node *fib_node; | |
2409 | ||
2410 | if (WARN_ON(!fib_entry)) | |
2411 | return -EINVAL; | |
2412 | ||
2413 | fib_node = fib_entry->fib_node; | |
2414 | list_for_each_entry_from(fib_entry, &fib_node->entry_list, list) { | |
2415 | if (fib_entry->params.tb_id != new_entry->params.tb_id || | |
2416 | fib_entry->params.tos != new_entry->params.tos || | |
2417 | fib_entry->params.prio != new_entry->params.prio) | |
2418 | break; | |
2419 | } | |
2420 | ||
2421 | list_add_tail(&new_entry->list, &fib_entry->list); | |
2422 | return 0; | |
2423 | } | |
2424 | ||
9aecce1c IS |
2425 | static int |
2426 | mlxsw_sp_fib4_node_list_insert(struct mlxsw_sp_fib_node *fib_node, | |
4283bce5 | 2427 | struct mlxsw_sp_fib_entry *new_entry, |
599cf8f9 | 2428 | bool replace, bool append) |
9aecce1c IS |
2429 | { |
2430 | struct mlxsw_sp_fib_entry *fib_entry; | |
2431 | ||
2432 | fib_entry = mlxsw_sp_fib4_node_entry_find(fib_node, &new_entry->params); | |
2433 | ||
4283bce5 IS |
2434 | if (append) |
2435 | return mlxsw_sp_fib4_node_list_append(fib_entry, new_entry); | |
599cf8f9 IS |
2436 | if (replace && WARN_ON(!fib_entry)) |
2437 | return -EINVAL; | |
4283bce5 | 2438 | |
599cf8f9 IS |
2439 | /* Insert new entry before replaced one, so that we can later |
2440 | * remove the second. | |
2441 | */ | |
9aecce1c IS |
2442 | if (fib_entry) { |
2443 | list_add_tail(&new_entry->list, &fib_entry->list); | |
2444 | } else { | |
2445 | struct mlxsw_sp_fib_entry *last; | |
2446 | ||
2447 | list_for_each_entry(last, &fib_node->entry_list, list) { | |
2448 | if (new_entry->params.tb_id > last->params.tb_id) | |
2449 | break; | |
2450 | fib_entry = last; | |
2451 | } | |
2452 | ||
2453 | if (fib_entry) | |
2454 | list_add(&new_entry->list, &fib_entry->list); | |
2455 | else | |
2456 | list_add(&new_entry->list, &fib_node->entry_list); | |
2457 | } | |
2458 | ||
2459 | return 0; | |
2460 | } | |
2461 | ||
2462 | static void | |
2463 | mlxsw_sp_fib4_node_list_remove(struct mlxsw_sp_fib_entry *fib_entry) | |
2464 | { | |
2465 | list_del(&fib_entry->list); | |
2466 | } | |
2467 | ||
2468 | static int | |
2469 | mlxsw_sp_fib4_node_entry_add(struct mlxsw_sp *mlxsw_sp, | |
2470 | const struct mlxsw_sp_fib_node *fib_node, | |
2471 | struct mlxsw_sp_fib_entry *fib_entry) | |
2472 | { | |
2473 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) | |
2474 | return 0; | |
2475 | ||
2476 | /* To prevent packet loss, overwrite the previously offloaded | |
2477 | * entry. | |
2478 | */ | |
2479 | if (!list_is_singular(&fib_node->entry_list)) { | |
2480 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
2481 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
2482 | ||
2483 | mlxsw_sp_fib_entry_offload_refresh(n, op, 0); | |
2484 | } | |
2485 | ||
2486 | return mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
2487 | } | |
2488 | ||
2489 | static void | |
2490 | mlxsw_sp_fib4_node_entry_del(struct mlxsw_sp *mlxsw_sp, | |
2491 | const struct mlxsw_sp_fib_node *fib_node, | |
2492 | struct mlxsw_sp_fib_entry *fib_entry) | |
2493 | { | |
2494 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) | |
2495 | return; | |
2496 | ||
2497 | /* Promote the next entry by overwriting the deleted entry */ | |
2498 | if (!list_is_singular(&fib_node->entry_list)) { | |
2499 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
2500 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
2501 | ||
2502 | mlxsw_sp_fib_entry_update(mlxsw_sp, n); | |
2503 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0); | |
2504 | return; | |
2505 | } | |
2506 | ||
2507 | mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry); | |
2508 | } | |
2509 | ||
2510 | static int mlxsw_sp_fib4_node_entry_link(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 2511 | struct mlxsw_sp_fib_entry *fib_entry, |
599cf8f9 | 2512 | bool replace, bool append) |
9aecce1c IS |
2513 | { |
2514 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2515 | int err; | |
2516 | ||
599cf8f9 IS |
2517 | err = mlxsw_sp_fib4_node_list_insert(fib_node, fib_entry, replace, |
2518 | append); | |
9aecce1c IS |
2519 | if (err) |
2520 | return err; | |
2521 | ||
2522 | err = mlxsw_sp_fib4_node_entry_add(mlxsw_sp, fib_node, fib_entry); | |
2523 | if (err) | |
2524 | goto err_fib4_node_entry_add; | |
2525 | ||
9aecce1c IS |
2526 | return 0; |
2527 | ||
2528 | err_fib4_node_entry_add: | |
2529 | mlxsw_sp_fib4_node_list_remove(fib_entry); | |
2530 | return err; | |
2531 | } | |
2532 | ||
2533 | static void | |
2534 | mlxsw_sp_fib4_node_entry_unlink(struct mlxsw_sp *mlxsw_sp, | |
2535 | struct mlxsw_sp_fib_entry *fib_entry) | |
2536 | { | |
2537 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2538 | ||
9aecce1c IS |
2539 | mlxsw_sp_fib4_node_entry_del(mlxsw_sp, fib_node, fib_entry); |
2540 | mlxsw_sp_fib4_node_list_remove(fib_entry); | |
2541 | } | |
2542 | ||
599cf8f9 IS |
2543 | static void mlxsw_sp_fib4_entry_replace(struct mlxsw_sp *mlxsw_sp, |
2544 | struct mlxsw_sp_fib_entry *fib_entry, | |
2545 | bool replace) | |
2546 | { | |
2547 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2548 | struct mlxsw_sp_fib_entry *replaced; | |
2549 | ||
2550 | if (!replace) | |
2551 | return; | |
2552 | ||
2553 | /* We inserted the new entry before replaced one */ | |
2554 | replaced = list_next_entry(fib_entry, list); | |
2555 | ||
2556 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, replaced); | |
2557 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, replaced); | |
2558 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
2559 | } | |
2560 | ||
9aecce1c IS |
2561 | static int |
2562 | mlxsw_sp_router_fib4_add(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 2563 | const struct fib_entry_notifier_info *fen_info, |
599cf8f9 | 2564 | bool replace, bool append) |
9aecce1c IS |
2565 | { |
2566 | struct mlxsw_sp_fib_entry *fib_entry; | |
2567 | struct mlxsw_sp_fib_node *fib_node; | |
61c503f9 JP |
2568 | int err; |
2569 | ||
9011b677 | 2570 | if (mlxsw_sp->router->aborted) |
b45f64d1 JP |
2571 | return 0; |
2572 | ||
9aecce1c IS |
2573 | fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info); |
2574 | if (IS_ERR(fib_node)) { | |
2575 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to get FIB node\n"); | |
2576 | return PTR_ERR(fib_node); | |
b45f64d1 | 2577 | } |
61c503f9 | 2578 | |
9aecce1c IS |
2579 | fib_entry = mlxsw_sp_fib4_entry_create(mlxsw_sp, fib_node, fen_info); |
2580 | if (IS_ERR(fib_entry)) { | |
2581 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to create FIB entry\n"); | |
2582 | err = PTR_ERR(fib_entry); | |
2583 | goto err_fib4_entry_create; | |
2584 | } | |
5b004412 | 2585 | |
599cf8f9 IS |
2586 | err = mlxsw_sp_fib4_node_entry_link(mlxsw_sp, fib_entry, replace, |
2587 | append); | |
b45f64d1 | 2588 | if (err) { |
9aecce1c IS |
2589 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to link FIB entry to node\n"); |
2590 | goto err_fib4_node_entry_link; | |
b45f64d1 | 2591 | } |
9aecce1c | 2592 | |
599cf8f9 IS |
2593 | mlxsw_sp_fib4_entry_replace(mlxsw_sp, fib_entry, replace); |
2594 | ||
61c503f9 JP |
2595 | return 0; |
2596 | ||
9aecce1c IS |
2597 | err_fib4_node_entry_link: |
2598 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2599 | err_fib4_entry_create: | |
2600 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
61c503f9 JP |
2601 | return err; |
2602 | } | |
2603 | ||
37956d78 JP |
2604 | static void mlxsw_sp_router_fib4_del(struct mlxsw_sp *mlxsw_sp, |
2605 | struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 2606 | { |
61c503f9 | 2607 | struct mlxsw_sp_fib_entry *fib_entry; |
9aecce1c | 2608 | struct mlxsw_sp_fib_node *fib_node; |
61c503f9 | 2609 | |
9011b677 | 2610 | if (mlxsw_sp->router->aborted) |
37956d78 | 2611 | return; |
b45f64d1 | 2612 | |
9aecce1c IS |
2613 | fib_entry = mlxsw_sp_fib4_entry_lookup(mlxsw_sp, fen_info); |
2614 | if (WARN_ON(!fib_entry)) | |
37956d78 | 2615 | return; |
9aecce1c | 2616 | fib_node = fib_entry->fib_node; |
5b004412 | 2617 | |
9aecce1c IS |
2618 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry); |
2619 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2620 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
61c503f9 | 2621 | } |
b45f64d1 JP |
2622 | |
2623 | static int mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp) | |
2624 | { | |
2625 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
2626 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
b5d90e6d | 2627 | int i, err; |
b45f64d1 JP |
2628 | |
2629 | mlxsw_reg_ralta_pack(ralta_pl, true, MLXSW_REG_RALXX_PROTOCOL_IPV4, | |
2630 | MLXSW_SP_LPM_TREE_MIN); | |
2631 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); | |
2632 | if (err) | |
2633 | return err; | |
2634 | ||
2635 | mlxsw_reg_ralst_pack(ralst_pl, 0xff, MLXSW_SP_LPM_TREE_MIN); | |
2636 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); | |
2637 | if (err) | |
2638 | return err; | |
2639 | ||
b5d90e6d | 2640 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 2641 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; |
b5d90e6d IS |
2642 | char raltb_pl[MLXSW_REG_RALTB_LEN]; |
2643 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
b45f64d1 | 2644 | |
b5d90e6d IS |
2645 | if (!mlxsw_sp_vr_is_used(vr)) |
2646 | continue; | |
2647 | ||
2648 | mlxsw_reg_raltb_pack(raltb_pl, vr->id, | |
2649 | MLXSW_REG_RALXX_PROTOCOL_IPV4, | |
2650 | MLXSW_SP_LPM_TREE_MIN); | |
2651 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), | |
2652 | raltb_pl); | |
2653 | if (err) | |
2654 | return err; | |
2655 | ||
2656 | mlxsw_reg_ralue_pack4(ralue_pl, MLXSW_SP_L3_PROTO_IPV4, | |
2657 | MLXSW_REG_RALUE_OP_WRITE_WRITE, vr->id, 0, | |
2658 | 0); | |
2659 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); | |
2660 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), | |
2661 | ralue_pl); | |
2662 | if (err) | |
2663 | return err; | |
2664 | } | |
2665 | ||
2666 | return 0; | |
b45f64d1 JP |
2667 | } |
2668 | ||
9aecce1c IS |
2669 | static void mlxsw_sp_fib4_node_flush(struct mlxsw_sp *mlxsw_sp, |
2670 | struct mlxsw_sp_fib_node *fib_node) | |
2671 | { | |
2672 | struct mlxsw_sp_fib_entry *fib_entry, *tmp; | |
2673 | ||
2674 | list_for_each_entry_safe(fib_entry, tmp, &fib_node->entry_list, list) { | |
2675 | bool do_break = &tmp->list == &fib_node->entry_list; | |
2676 | ||
2677 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry); | |
2678 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2679 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
2680 | /* Break when entry list is empty and node was freed. | |
2681 | * Otherwise, we'll access freed memory in the next | |
2682 | * iteration. | |
2683 | */ | |
2684 | if (do_break) | |
2685 | break; | |
2686 | } | |
2687 | } | |
2688 | ||
2689 | static void mlxsw_sp_fib_node_flush(struct mlxsw_sp *mlxsw_sp, | |
2690 | struct mlxsw_sp_fib_node *fib_node) | |
2691 | { | |
76610ebb | 2692 | switch (fib_node->fib->proto) { |
9aecce1c IS |
2693 | case MLXSW_SP_L3_PROTO_IPV4: |
2694 | mlxsw_sp_fib4_node_flush(mlxsw_sp, fib_node); | |
2695 | break; | |
2696 | case MLXSW_SP_L3_PROTO_IPV6: | |
2697 | WARN_ON_ONCE(1); | |
2698 | break; | |
2699 | } | |
2700 | } | |
2701 | ||
76610ebb IS |
2702 | static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp, |
2703 | struct mlxsw_sp_vr *vr, | |
2704 | enum mlxsw_sp_l3proto proto) | |
b45f64d1 | 2705 | { |
76610ebb | 2706 | struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); |
9aecce1c | 2707 | struct mlxsw_sp_fib_node *fib_node, *tmp; |
76610ebb IS |
2708 | |
2709 | list_for_each_entry_safe(fib_node, tmp, &fib->node_list, list) { | |
2710 | bool do_break = &tmp->list == &fib->node_list; | |
2711 | ||
2712 | mlxsw_sp_fib_node_flush(mlxsw_sp, fib_node); | |
2713 | if (do_break) | |
2714 | break; | |
2715 | } | |
2716 | } | |
2717 | ||
2718 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp) | |
2719 | { | |
b45f64d1 | 2720 | int i; |
b45f64d1 | 2721 | |
c1a38311 | 2722 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 2723 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; |
ac571de9 | 2724 | |
76610ebb | 2725 | if (!mlxsw_sp_vr_is_used(vr)) |
b45f64d1 | 2726 | continue; |
76610ebb | 2727 | mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4); |
b45f64d1 | 2728 | } |
ac571de9 IS |
2729 | } |
2730 | ||
2731 | static void mlxsw_sp_router_fib4_abort(struct mlxsw_sp *mlxsw_sp) | |
2732 | { | |
2733 | int err; | |
2734 | ||
9011b677 | 2735 | if (mlxsw_sp->router->aborted) |
d331d303 IS |
2736 | return; |
2737 | dev_warn(mlxsw_sp->bus_info->dev, "FIB abort triggered. Note that FIB entries are no longer being offloaded to this device.\n"); | |
ac571de9 | 2738 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
9011b677 | 2739 | mlxsw_sp->router->aborted = true; |
b45f64d1 JP |
2740 | err = mlxsw_sp_router_set_abort_trap(mlxsw_sp); |
2741 | if (err) | |
2742 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set abort trap.\n"); | |
2743 | } | |
2744 | ||
3057224e | 2745 | struct mlxsw_sp_fib_event_work { |
a0e4761d | 2746 | struct work_struct work; |
ad178c8e IS |
2747 | union { |
2748 | struct fib_entry_notifier_info fen_info; | |
5d7bfd14 | 2749 | struct fib_rule_notifier_info fr_info; |
ad178c8e IS |
2750 | struct fib_nh_notifier_info fnh_info; |
2751 | }; | |
3057224e IS |
2752 | struct mlxsw_sp *mlxsw_sp; |
2753 | unsigned long event; | |
2754 | }; | |
2755 | ||
2756 | static void mlxsw_sp_router_fib_event_work(struct work_struct *work) | |
b45f64d1 | 2757 | { |
3057224e | 2758 | struct mlxsw_sp_fib_event_work *fib_work = |
a0e4761d | 2759 | container_of(work, struct mlxsw_sp_fib_event_work, work); |
3057224e | 2760 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; |
5d7bfd14 | 2761 | struct fib_rule *rule; |
599cf8f9 | 2762 | bool replace, append; |
b45f64d1 JP |
2763 | int err; |
2764 | ||
3057224e IS |
2765 | /* Protect internal structures from changes */ |
2766 | rtnl_lock(); | |
2767 | switch (fib_work->event) { | |
599cf8f9 | 2768 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 2769 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
b45f64d1 | 2770 | case FIB_EVENT_ENTRY_ADD: |
599cf8f9 | 2771 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; |
4283bce5 IS |
2772 | append = fib_work->event == FIB_EVENT_ENTRY_APPEND; |
2773 | err = mlxsw_sp_router_fib4_add(mlxsw_sp, &fib_work->fen_info, | |
599cf8f9 | 2774 | replace, append); |
b45f64d1 JP |
2775 | if (err) |
2776 | mlxsw_sp_router_fib4_abort(mlxsw_sp); | |
3057224e | 2777 | fib_info_put(fib_work->fen_info.fi); |
b45f64d1 JP |
2778 | break; |
2779 | case FIB_EVENT_ENTRY_DEL: | |
3057224e IS |
2780 | mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info); |
2781 | fib_info_put(fib_work->fen_info.fi); | |
b45f64d1 JP |
2782 | break; |
2783 | case FIB_EVENT_RULE_ADD: /* fall through */ | |
2784 | case FIB_EVENT_RULE_DEL: | |
5d7bfd14 | 2785 | rule = fib_work->fr_info.rule; |
c7f6e665 | 2786 | if (!fib4_rule_default(rule) && !rule->l3mdev) |
5d7bfd14 IS |
2787 | mlxsw_sp_router_fib4_abort(mlxsw_sp); |
2788 | fib_rule_put(rule); | |
b45f64d1 | 2789 | break; |
ad178c8e IS |
2790 | case FIB_EVENT_NH_ADD: /* fall through */ |
2791 | case FIB_EVENT_NH_DEL: | |
2792 | mlxsw_sp_nexthop_event(mlxsw_sp, fib_work->event, | |
2793 | fib_work->fnh_info.fib_nh); | |
2794 | fib_info_put(fib_work->fnh_info.fib_nh->nh_parent); | |
2795 | break; | |
b45f64d1 | 2796 | } |
3057224e IS |
2797 | rtnl_unlock(); |
2798 | kfree(fib_work); | |
2799 | } | |
2800 | ||
2801 | /* Called with rcu_read_lock() */ | |
2802 | static int mlxsw_sp_router_fib_event(struct notifier_block *nb, | |
2803 | unsigned long event, void *ptr) | |
2804 | { | |
3057224e IS |
2805 | struct mlxsw_sp_fib_event_work *fib_work; |
2806 | struct fib_notifier_info *info = ptr; | |
7e39d115 | 2807 | struct mlxsw_sp_router *router; |
3057224e IS |
2808 | |
2809 | if (!net_eq(info->net, &init_net)) | |
2810 | return NOTIFY_DONE; | |
2811 | ||
2812 | fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC); | |
2813 | if (WARN_ON(!fib_work)) | |
2814 | return NOTIFY_BAD; | |
2815 | ||
a0e4761d | 2816 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fib_event_work); |
7e39d115 IS |
2817 | router = container_of(nb, struct mlxsw_sp_router, fib_nb); |
2818 | fib_work->mlxsw_sp = router->mlxsw_sp; | |
3057224e IS |
2819 | fib_work->event = event; |
2820 | ||
2821 | switch (event) { | |
599cf8f9 | 2822 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 2823 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
3057224e IS |
2824 | case FIB_EVENT_ENTRY_ADD: /* fall through */ |
2825 | case FIB_EVENT_ENTRY_DEL: | |
2826 | memcpy(&fib_work->fen_info, ptr, sizeof(fib_work->fen_info)); | |
2827 | /* Take referece on fib_info to prevent it from being | |
2828 | * freed while work is queued. Release it afterwards. | |
2829 | */ | |
2830 | fib_info_hold(fib_work->fen_info.fi); | |
2831 | break; | |
5d7bfd14 IS |
2832 | case FIB_EVENT_RULE_ADD: /* fall through */ |
2833 | case FIB_EVENT_RULE_DEL: | |
2834 | memcpy(&fib_work->fr_info, ptr, sizeof(fib_work->fr_info)); | |
2835 | fib_rule_get(fib_work->fr_info.rule); | |
2836 | break; | |
ad178c8e IS |
2837 | case FIB_EVENT_NH_ADD: /* fall through */ |
2838 | case FIB_EVENT_NH_DEL: | |
2839 | memcpy(&fib_work->fnh_info, ptr, sizeof(fib_work->fnh_info)); | |
2840 | fib_info_hold(fib_work->fnh_info.fib_nh->nh_parent); | |
2841 | break; | |
3057224e IS |
2842 | } |
2843 | ||
a0e4761d | 2844 | mlxsw_core_schedule_work(&fib_work->work); |
3057224e | 2845 | |
b45f64d1 JP |
2846 | return NOTIFY_DONE; |
2847 | } | |
2848 | ||
4724ba56 IS |
2849 | static struct mlxsw_sp_rif * |
2850 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
2851 | const struct net_device *dev) | |
2852 | { | |
2853 | int i; | |
2854 | ||
2855 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
5f9efffb IS |
2856 | if (mlxsw_sp->router->rifs[i] && |
2857 | mlxsw_sp->router->rifs[i]->dev == dev) | |
2858 | return mlxsw_sp->router->rifs[i]; | |
4724ba56 IS |
2859 | |
2860 | return NULL; | |
2861 | } | |
2862 | ||
2863 | static int mlxsw_sp_router_rif_disable(struct mlxsw_sp *mlxsw_sp, u16 rif) | |
2864 | { | |
2865 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
2866 | int err; | |
2867 | ||
2868 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif); | |
2869 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2870 | if (WARN_ON_ONCE(err)) | |
2871 | return err; | |
2872 | ||
2873 | mlxsw_reg_ritr_enable_set(ritr_pl, false); | |
2874 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2875 | } | |
2876 | ||
2877 | static void mlxsw_sp_router_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
bf95233e | 2878 | struct mlxsw_sp_rif *rif) |
4724ba56 | 2879 | { |
bf95233e AS |
2880 | mlxsw_sp_router_rif_disable(mlxsw_sp, rif->rif_index); |
2881 | mlxsw_sp_nexthop_rif_gone_sync(mlxsw_sp, rif); | |
2882 | mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, rif); | |
4724ba56 IS |
2883 | } |
2884 | ||
bf95233e | 2885 | static bool mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *rif, |
4724ba56 IS |
2886 | const struct in_device *in_dev, |
2887 | unsigned long event) | |
2888 | { | |
2889 | switch (event) { | |
2890 | case NETDEV_UP: | |
bf95233e | 2891 | if (!rif) |
4724ba56 IS |
2892 | return true; |
2893 | return false; | |
2894 | case NETDEV_DOWN: | |
bf95233e AS |
2895 | if (rif && !in_dev->ifa_list && |
2896 | !netif_is_l3_slave(rif->dev)) | |
4724ba56 IS |
2897 | return true; |
2898 | /* It is possible we already removed the RIF ourselves | |
2899 | * if it was assigned to a netdev that is now a bridge | |
2900 | * or LAG slave. | |
2901 | */ | |
2902 | return false; | |
2903 | } | |
2904 | ||
2905 | return false; | |
2906 | } | |
2907 | ||
bf95233e | 2908 | #define MLXSW_SP_INVALID_INDEX_RIF 0xffff |
4724ba56 IS |
2909 | static int mlxsw_sp_avail_rif_get(struct mlxsw_sp *mlxsw_sp) |
2910 | { | |
2911 | int i; | |
2912 | ||
2913 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
5f9efffb | 2914 | if (!mlxsw_sp->router->rifs[i]) |
4724ba56 IS |
2915 | return i; |
2916 | ||
bf95233e | 2917 | return MLXSW_SP_INVALID_INDEX_RIF; |
4724ba56 IS |
2918 | } |
2919 | ||
2920 | static void mlxsw_sp_vport_rif_sp_attr_get(struct mlxsw_sp_port *mlxsw_sp_vport, | |
2921 | bool *p_lagged, u16 *p_system_port) | |
2922 | { | |
2923 | u8 local_port = mlxsw_sp_vport->local_port; | |
2924 | ||
2925 | *p_lagged = mlxsw_sp_vport->lagged; | |
2926 | *p_system_port = *p_lagged ? mlxsw_sp_vport->lag_id : local_port; | |
2927 | } | |
2928 | ||
2929 | static int mlxsw_sp_vport_rif_sp_op(struct mlxsw_sp_port *mlxsw_sp_vport, | |
6913229e | 2930 | u16 vr_id, struct net_device *l3_dev, |
bf95233e | 2931 | u16 rif_index, bool create) |
4724ba56 IS |
2932 | { |
2933 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
2934 | bool lagged = mlxsw_sp_vport->lagged; | |
2935 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
2936 | u16 system_port; | |
2937 | ||
bf95233e AS |
2938 | mlxsw_reg_ritr_pack(ritr_pl, create, MLXSW_REG_RITR_SP_IF, rif_index, |
2939 | vr_id, l3_dev->mtu, l3_dev->dev_addr); | |
4724ba56 IS |
2940 | |
2941 | mlxsw_sp_vport_rif_sp_attr_get(mlxsw_sp_vport, &lagged, &system_port); | |
2942 | mlxsw_reg_ritr_sp_if_pack(ritr_pl, lagged, system_port, | |
2943 | mlxsw_sp_vport_vid_get(mlxsw_sp_vport)); | |
2944 | ||
2945 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2946 | } | |
2947 | ||
2948 | static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport); | |
2949 | ||
bf95233e | 2950 | static u16 mlxsw_sp_rif_sp_to_fid(u16 rif_index) |
4724ba56 | 2951 | { |
bf95233e | 2952 | return MLXSW_SP_RFID_BASE + rif_index; |
4724ba56 IS |
2953 | } |
2954 | ||
2955 | static struct mlxsw_sp_fid * | |
2956 | mlxsw_sp_rfid_alloc(u16 fid, struct net_device *l3_dev) | |
2957 | { | |
2958 | struct mlxsw_sp_fid *f; | |
2959 | ||
2960 | f = kzalloc(sizeof(*f), GFP_KERNEL); | |
2961 | if (!f) | |
2962 | return NULL; | |
2963 | ||
2964 | f->leave = mlxsw_sp_vport_rif_sp_leave; | |
2965 | f->ref_count = 0; | |
2966 | f->dev = l3_dev; | |
2967 | f->fid = fid; | |
2968 | ||
2969 | return f; | |
2970 | } | |
2971 | ||
2972 | static struct mlxsw_sp_rif * | |
bf95233e | 2973 | mlxsw_sp_rif_alloc(u16 rif_index, u16 vr_id, struct net_device *l3_dev, |
6913229e | 2974 | struct mlxsw_sp_fid *f) |
4724ba56 | 2975 | { |
bf95233e | 2976 | struct mlxsw_sp_rif *rif; |
4724ba56 | 2977 | |
bf95233e AS |
2978 | rif = kzalloc(sizeof(*rif), GFP_KERNEL); |
2979 | if (!rif) | |
4724ba56 IS |
2980 | return NULL; |
2981 | ||
bf95233e AS |
2982 | INIT_LIST_HEAD(&rif->nexthop_list); |
2983 | INIT_LIST_HEAD(&rif->neigh_list); | |
2984 | ether_addr_copy(rif->addr, l3_dev->dev_addr); | |
2985 | rif->mtu = l3_dev->mtu; | |
2986 | rif->vr_id = vr_id; | |
2987 | rif->dev = l3_dev; | |
2988 | rif->rif_index = rif_index; | |
2989 | rif->f = f; | |
4724ba56 | 2990 | |
bf95233e | 2991 | return rif; |
4724ba56 IS |
2992 | } |
2993 | ||
5f9efffb IS |
2994 | struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp, |
2995 | u16 rif_index) | |
2996 | { | |
2997 | return mlxsw_sp->router->rifs[rif_index]; | |
2998 | } | |
2999 | ||
fd1b9d41 AS |
3000 | u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif) |
3001 | { | |
3002 | return rif->rif_index; | |
3003 | } | |
3004 | ||
3005 | int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif) | |
3006 | { | |
3007 | return rif->dev->ifindex; | |
3008 | } | |
3009 | ||
4724ba56 IS |
3010 | static struct mlxsw_sp_rif * |
3011 | mlxsw_sp_vport_rif_sp_create(struct mlxsw_sp_port *mlxsw_sp_vport, | |
3012 | struct net_device *l3_dev) | |
3013 | { | |
3014 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
57837885 | 3015 | u32 tb_id = l3mdev_fib_table(l3_dev); |
6913229e | 3016 | struct mlxsw_sp_vr *vr; |
4724ba56 | 3017 | struct mlxsw_sp_fid *f; |
bf95233e AS |
3018 | struct mlxsw_sp_rif *rif; |
3019 | u16 fid, rif_index; | |
4724ba56 IS |
3020 | int err; |
3021 | ||
bf95233e AS |
3022 | rif_index = mlxsw_sp_avail_rif_get(mlxsw_sp); |
3023 | if (rif_index == MLXSW_SP_INVALID_INDEX_RIF) | |
4724ba56 IS |
3024 | return ERR_PTR(-ERANGE); |
3025 | ||
57837885 | 3026 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN); |
6913229e IS |
3027 | if (IS_ERR(vr)) |
3028 | return ERR_CAST(vr); | |
3029 | ||
bf95233e AS |
3030 | err = mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, vr->id, l3_dev, |
3031 | rif_index, true); | |
4724ba56 | 3032 | if (err) |
6913229e | 3033 | goto err_vport_rif_sp_op; |
4724ba56 | 3034 | |
bf95233e | 3035 | fid = mlxsw_sp_rif_sp_to_fid(rif_index); |
4724ba56 IS |
3036 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, true); |
3037 | if (err) | |
3038 | goto err_rif_fdb_op; | |
3039 | ||
3040 | f = mlxsw_sp_rfid_alloc(fid, l3_dev); | |
3041 | if (!f) { | |
3042 | err = -ENOMEM; | |
3043 | goto err_rfid_alloc; | |
3044 | } | |
3045 | ||
bf95233e AS |
3046 | rif = mlxsw_sp_rif_alloc(rif_index, vr->id, l3_dev, f); |
3047 | if (!rif) { | |
4724ba56 IS |
3048 | err = -ENOMEM; |
3049 | goto err_rif_alloc; | |
3050 | } | |
3051 | ||
e0c0afd8 AS |
3052 | if (devlink_dpipe_table_counter_enabled(priv_to_devlink(mlxsw_sp->core), |
3053 | MLXSW_SP_DPIPE_TABLE_NAME_ERIF)) { | |
3054 | err = mlxsw_sp_rif_counter_alloc(mlxsw_sp, rif, | |
3055 | MLXSW_SP_RIF_COUNTER_EGRESS); | |
3056 | if (err) | |
3057 | netdev_dbg(mlxsw_sp_vport->dev, | |
3058 | "Counter alloc Failed err=%d\n", err); | |
3059 | } | |
3060 | ||
bf95233e | 3061 | f->rif = rif; |
5f9efffb | 3062 | mlxsw_sp->router->rifs[rif_index] = rif; |
6913229e | 3063 | vr->rif_count++; |
4724ba56 | 3064 | |
bf95233e | 3065 | return rif; |
4724ba56 IS |
3066 | |
3067 | err_rif_alloc: | |
3068 | kfree(f); | |
3069 | err_rfid_alloc: | |
3070 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false); | |
3071 | err_rif_fdb_op: | |
bf95233e AS |
3072 | mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, vr->id, l3_dev, rif_index, |
3073 | false); | |
6913229e IS |
3074 | err_vport_rif_sp_op: |
3075 | mlxsw_sp_vr_put(vr); | |
4724ba56 IS |
3076 | return ERR_PTR(err); |
3077 | } | |
3078 | ||
3079 | static void mlxsw_sp_vport_rif_sp_destroy(struct mlxsw_sp_port *mlxsw_sp_vport, | |
bf95233e | 3080 | struct mlxsw_sp_rif *rif) |
4724ba56 IS |
3081 | { |
3082 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
9011b677 | 3083 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[rif->vr_id]; |
bf95233e AS |
3084 | struct net_device *l3_dev = rif->dev; |
3085 | struct mlxsw_sp_fid *f = rif->f; | |
3086 | u16 rif_index = rif->rif_index; | |
4724ba56 | 3087 | u16 fid = f->fid; |
4724ba56 | 3088 | |
bf95233e | 3089 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif); |
4724ba56 | 3090 | |
e0c0afd8 AS |
3091 | mlxsw_sp_rif_counter_free(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_EGRESS); |
3092 | mlxsw_sp_rif_counter_free(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_INGRESS); | |
3093 | ||
6913229e | 3094 | vr->rif_count--; |
5f9efffb | 3095 | mlxsw_sp->router->rifs[rif_index] = NULL; |
bf95233e | 3096 | f->rif = NULL; |
4724ba56 | 3097 | |
bf95233e | 3098 | kfree(rif); |
4724ba56 IS |
3099 | |
3100 | kfree(f); | |
3101 | ||
3102 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false); | |
3103 | ||
bf95233e AS |
3104 | mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, vr->id, l3_dev, rif_index, |
3105 | false); | |
6913229e | 3106 | mlxsw_sp_vr_put(vr); |
4724ba56 IS |
3107 | } |
3108 | ||
3109 | static int mlxsw_sp_vport_rif_sp_join(struct mlxsw_sp_port *mlxsw_sp_vport, | |
3110 | struct net_device *l3_dev) | |
3111 | { | |
3112 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
03ea01e9 | 3113 | u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport); |
4aafc368 | 3114 | struct mlxsw_sp_port *mlxsw_sp_port; |
bf95233e | 3115 | struct mlxsw_sp_rif *rif; |
03ea01e9 | 3116 | int err; |
4724ba56 | 3117 | |
bf95233e AS |
3118 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
3119 | if (!rif) { | |
3120 | rif = mlxsw_sp_vport_rif_sp_create(mlxsw_sp_vport, l3_dev); | |
3121 | if (IS_ERR(rif)) | |
3122 | return PTR_ERR(rif); | |
4724ba56 IS |
3123 | } |
3124 | ||
03ea01e9 IS |
3125 | err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false); |
3126 | if (err) | |
3127 | goto err_port_vid_learning_set; | |
3128 | ||
3129 | err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_vport, vid, | |
3130 | BR_STATE_FORWARDING); | |
3131 | if (err) | |
3132 | goto err_port_vid_stp_set; | |
3133 | ||
4aafc368 IS |
3134 | mlxsw_sp_port = mlxsw_sp_vport_port(mlxsw_sp_vport); |
3135 | if (mlxsw_sp_port->nr_port_vid_map++ == 0) { | |
3136 | err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port); | |
3137 | if (err) | |
3138 | goto err_port_vp_mode_trans; | |
3139 | } | |
3140 | ||
bf95233e AS |
3141 | mlxsw_sp_vport_fid_set(mlxsw_sp_vport, rif->f); |
3142 | rif->f->ref_count++; | |
4724ba56 | 3143 | |
bf95233e | 3144 | netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", rif->f->fid); |
4724ba56 IS |
3145 | |
3146 | return 0; | |
03ea01e9 | 3147 | |
4aafc368 IS |
3148 | err_port_vp_mode_trans: |
3149 | mlxsw_sp_port->nr_port_vid_map--; | |
3150 | mlxsw_sp_port_vid_stp_set(mlxsw_sp_vport, vid, BR_STATE_BLOCKING); | |
03ea01e9 IS |
3151 | err_port_vid_stp_set: |
3152 | mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true); | |
3153 | err_port_vid_learning_set: | |
3154 | if (rif->f->ref_count == 0) | |
3155 | mlxsw_sp_vport_rif_sp_destroy(mlxsw_sp_vport, rif); | |
3156 | return err; | |
4724ba56 IS |
3157 | } |
3158 | ||
3159 | static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport) | |
3160 | { | |
3161 | struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport); | |
03ea01e9 | 3162 | u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport); |
4aafc368 | 3163 | struct mlxsw_sp_port *mlxsw_sp_port; |
4724ba56 IS |
3164 | |
3165 | netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid); | |
3166 | ||
4aafc368 IS |
3167 | f->ref_count--; |
3168 | mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL); | |
3169 | ||
3170 | mlxsw_sp_port = mlxsw_sp_vport_port(mlxsw_sp_vport); | |
3171 | if (mlxsw_sp_port->nr_port_vid_map == 1) | |
3172 | mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port); | |
3173 | mlxsw_sp_port->nr_port_vid_map--; | |
03ea01e9 IS |
3174 | mlxsw_sp_port_vid_stp_set(mlxsw_sp_vport, vid, BR_STATE_BLOCKING); |
3175 | mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true); | |
4aafc368 IS |
3176 | |
3177 | if (f->ref_count == 0) | |
bf95233e | 3178 | mlxsw_sp_vport_rif_sp_destroy(mlxsw_sp_vport, f->rif); |
4724ba56 IS |
3179 | } |
3180 | ||
3181 | static int mlxsw_sp_inetaddr_vport_event(struct net_device *l3_dev, | |
3182 | struct net_device *port_dev, | |
3183 | unsigned long event, u16 vid) | |
3184 | { | |
3185 | struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev); | |
3186 | struct mlxsw_sp_port *mlxsw_sp_vport; | |
3187 | ||
3188 | mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid); | |
3189 | if (WARN_ON(!mlxsw_sp_vport)) | |
3190 | return -EINVAL; | |
3191 | ||
3192 | switch (event) { | |
3193 | case NETDEV_UP: | |
3194 | return mlxsw_sp_vport_rif_sp_join(mlxsw_sp_vport, l3_dev); | |
3195 | case NETDEV_DOWN: | |
3196 | mlxsw_sp_vport_rif_sp_leave(mlxsw_sp_vport); | |
3197 | break; | |
3198 | } | |
3199 | ||
3200 | return 0; | |
3201 | } | |
3202 | ||
3203 | static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev, | |
3204 | unsigned long event) | |
3205 | { | |
2b94e58d JP |
3206 | if (netif_is_bridge_port(port_dev) || |
3207 | netif_is_lag_port(port_dev) || | |
3208 | netif_is_ovs_port(port_dev)) | |
4724ba56 IS |
3209 | return 0; |
3210 | ||
3211 | return mlxsw_sp_inetaddr_vport_event(port_dev, port_dev, event, 1); | |
3212 | } | |
3213 | ||
3214 | static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev, | |
3215 | struct net_device *lag_dev, | |
3216 | unsigned long event, u16 vid) | |
3217 | { | |
3218 | struct net_device *port_dev; | |
3219 | struct list_head *iter; | |
3220 | int err; | |
3221 | ||
3222 | netdev_for_each_lower_dev(lag_dev, port_dev, iter) { | |
3223 | if (mlxsw_sp_port_dev_check(port_dev)) { | |
3224 | err = mlxsw_sp_inetaddr_vport_event(l3_dev, port_dev, | |
3225 | event, vid); | |
3226 | if (err) | |
3227 | return err; | |
3228 | } | |
3229 | } | |
3230 | ||
3231 | return 0; | |
3232 | } | |
3233 | ||
3234 | static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev, | |
3235 | unsigned long event) | |
3236 | { | |
3237 | if (netif_is_bridge_port(lag_dev)) | |
3238 | return 0; | |
3239 | ||
3240 | return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1); | |
3241 | } | |
3242 | ||
3243 | static struct mlxsw_sp_fid *mlxsw_sp_bridge_fid_get(struct mlxsw_sp *mlxsw_sp, | |
3244 | struct net_device *l3_dev) | |
3245 | { | |
3246 | u16 fid; | |
3247 | ||
3248 | if (is_vlan_dev(l3_dev)) | |
3249 | fid = vlan_dev_vlan_id(l3_dev); | |
5f6935c6 | 3250 | else if (mlxsw_sp_master_bridge(mlxsw_sp)->dev == l3_dev) |
4724ba56 IS |
3251 | fid = 1; |
3252 | else | |
3253 | return mlxsw_sp_vfid_find(mlxsw_sp, l3_dev); | |
3254 | ||
3255 | return mlxsw_sp_fid_find(mlxsw_sp, fid); | |
3256 | } | |
3257 | ||
5ec2ee7d IS |
3258 | static u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp) |
3259 | { | |
3260 | return mlxsw_core_max_ports(mlxsw_sp->core) + 1; | |
3261 | } | |
3262 | ||
4724ba56 IS |
3263 | static enum mlxsw_flood_table_type mlxsw_sp_flood_table_type_get(u16 fid) |
3264 | { | |
3265 | return mlxsw_sp_fid_is_vfid(fid) ? MLXSW_REG_SFGC_TABLE_TYPE_FID : | |
3266 | MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST; | |
3267 | } | |
3268 | ||
3269 | static u16 mlxsw_sp_flood_table_index_get(u16 fid) | |
3270 | { | |
3271 | return mlxsw_sp_fid_is_vfid(fid) ? mlxsw_sp_fid_to_vfid(fid) : fid; | |
3272 | } | |
3273 | ||
3274 | static int mlxsw_sp_router_port_flood_set(struct mlxsw_sp *mlxsw_sp, u16 fid, | |
3275 | bool set) | |
3276 | { | |
5ec2ee7d | 3277 | u8 router_port = mlxsw_sp_router_port(mlxsw_sp); |
4724ba56 IS |
3278 | enum mlxsw_flood_table_type table_type; |
3279 | char *sftr_pl; | |
3280 | u16 index; | |
3281 | int err; | |
3282 | ||
3283 | sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL); | |
3284 | if (!sftr_pl) | |
3285 | return -ENOMEM; | |
3286 | ||
3287 | table_type = mlxsw_sp_flood_table_type_get(fid); | |
3288 | index = mlxsw_sp_flood_table_index_get(fid); | |
3289 | mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BC, index, table_type, | |
5ec2ee7d | 3290 | 1, router_port, set); |
4724ba56 IS |
3291 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); |
3292 | ||
3293 | kfree(sftr_pl); | |
3294 | return err; | |
3295 | } | |
3296 | ||
3297 | static enum mlxsw_reg_ritr_if_type mlxsw_sp_rif_type_get(u16 fid) | |
3298 | { | |
3299 | if (mlxsw_sp_fid_is_vfid(fid)) | |
3300 | return MLXSW_REG_RITR_FID_IF; | |
3301 | else | |
3302 | return MLXSW_REG_RITR_VLAN_IF; | |
3303 | } | |
3304 | ||
6913229e | 3305 | static int mlxsw_sp_rif_bridge_op(struct mlxsw_sp *mlxsw_sp, u16 vr_id, |
4724ba56 IS |
3306 | struct net_device *l3_dev, |
3307 | u16 fid, u16 rif, | |
3308 | bool create) | |
3309 | { | |
3310 | enum mlxsw_reg_ritr_if_type rif_type; | |
3311 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
3312 | ||
3313 | rif_type = mlxsw_sp_rif_type_get(fid); | |
6913229e | 3314 | mlxsw_reg_ritr_pack(ritr_pl, create, rif_type, rif, vr_id, l3_dev->mtu, |
4724ba56 IS |
3315 | l3_dev->dev_addr); |
3316 | mlxsw_reg_ritr_fid_set(ritr_pl, rif_type, fid); | |
3317 | ||
3318 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
3319 | } | |
3320 | ||
3321 | static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp, | |
3322 | struct net_device *l3_dev, | |
3323 | struct mlxsw_sp_fid *f) | |
3324 | { | |
57837885 | 3325 | u32 tb_id = l3mdev_fib_table(l3_dev); |
bf95233e | 3326 | struct mlxsw_sp_rif *rif; |
6913229e | 3327 | struct mlxsw_sp_vr *vr; |
bf95233e | 3328 | u16 rif_index; |
4724ba56 IS |
3329 | int err; |
3330 | ||
bf95233e AS |
3331 | rif_index = mlxsw_sp_avail_rif_get(mlxsw_sp); |
3332 | if (rif_index == MLXSW_SP_INVALID_INDEX_RIF) | |
4724ba56 IS |
3333 | return -ERANGE; |
3334 | ||
57837885 | 3335 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN); |
6913229e IS |
3336 | if (IS_ERR(vr)) |
3337 | return PTR_ERR(vr); | |
3338 | ||
4724ba56 IS |
3339 | err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true); |
3340 | if (err) | |
6913229e | 3341 | goto err_port_flood_set; |
4724ba56 | 3342 | |
bf95233e AS |
3343 | err = mlxsw_sp_rif_bridge_op(mlxsw_sp, vr->id, l3_dev, f->fid, |
3344 | rif_index, true); | |
4724ba56 IS |
3345 | if (err) |
3346 | goto err_rif_bridge_op; | |
3347 | ||
3348 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, true); | |
3349 | if (err) | |
3350 | goto err_rif_fdb_op; | |
3351 | ||
bf95233e AS |
3352 | rif = mlxsw_sp_rif_alloc(rif_index, vr->id, l3_dev, f); |
3353 | if (!rif) { | |
4724ba56 IS |
3354 | err = -ENOMEM; |
3355 | goto err_rif_alloc; | |
3356 | } | |
3357 | ||
bf95233e | 3358 | f->rif = rif; |
5f9efffb | 3359 | mlxsw_sp->router->rifs[rif_index] = rif; |
6913229e | 3360 | vr->rif_count++; |
4724ba56 | 3361 | |
bf95233e | 3362 | netdev_dbg(l3_dev, "RIF=%d created\n", rif_index); |
4724ba56 IS |
3363 | |
3364 | return 0; | |
3365 | ||
3366 | err_rif_alloc: | |
3367 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false); | |
3368 | err_rif_fdb_op: | |
bf95233e AS |
3369 | mlxsw_sp_rif_bridge_op(mlxsw_sp, vr->id, l3_dev, f->fid, rif_index, |
3370 | false); | |
4724ba56 IS |
3371 | err_rif_bridge_op: |
3372 | mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); | |
6913229e IS |
3373 | err_port_flood_set: |
3374 | mlxsw_sp_vr_put(vr); | |
4724ba56 IS |
3375 | return err; |
3376 | } | |
3377 | ||
3378 | void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp, | |
bf95233e | 3379 | struct mlxsw_sp_rif *rif) |
4724ba56 | 3380 | { |
9011b677 | 3381 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[rif->vr_id]; |
bf95233e AS |
3382 | struct net_device *l3_dev = rif->dev; |
3383 | struct mlxsw_sp_fid *f = rif->f; | |
3384 | u16 rif_index = rif->rif_index; | |
4724ba56 | 3385 | |
bf95233e | 3386 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif); |
4724ba56 | 3387 | |
6913229e | 3388 | vr->rif_count--; |
5f9efffb | 3389 | mlxsw_sp->router->rifs[rif_index] = NULL; |
bf95233e | 3390 | f->rif = NULL; |
4724ba56 | 3391 | |
bf95233e | 3392 | kfree(rif); |
4724ba56 IS |
3393 | |
3394 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false); | |
3395 | ||
bf95233e AS |
3396 | mlxsw_sp_rif_bridge_op(mlxsw_sp, vr->id, l3_dev, f->fid, rif_index, |
3397 | false); | |
4724ba56 IS |
3398 | |
3399 | mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); | |
3400 | ||
6913229e IS |
3401 | mlxsw_sp_vr_put(vr); |
3402 | ||
bf95233e | 3403 | netdev_dbg(l3_dev, "RIF=%d destroyed\n", rif_index); |
4724ba56 IS |
3404 | } |
3405 | ||
3406 | static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev, | |
3407 | struct net_device *br_dev, | |
3408 | unsigned long event) | |
3409 | { | |
3410 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); | |
3411 | struct mlxsw_sp_fid *f; | |
3412 | ||
3413 | /* FID can either be an actual FID if the L3 device is the | |
3414 | * VLAN-aware bridge or a VLAN device on top. Otherwise, the | |
3415 | * L3 device is a VLAN-unaware bridge and we get a vFID. | |
3416 | */ | |
3417 | f = mlxsw_sp_bridge_fid_get(mlxsw_sp, l3_dev); | |
3418 | if (WARN_ON(!f)) | |
3419 | return -EINVAL; | |
3420 | ||
3421 | switch (event) { | |
3422 | case NETDEV_UP: | |
3423 | return mlxsw_sp_rif_bridge_create(mlxsw_sp, l3_dev, f); | |
3424 | case NETDEV_DOWN: | |
bf95233e | 3425 | mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->rif); |
4724ba56 IS |
3426 | break; |
3427 | } | |
3428 | ||
3429 | return 0; | |
3430 | } | |
3431 | ||
3432 | static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev, | |
3433 | unsigned long event) | |
3434 | { | |
3435 | struct net_device *real_dev = vlan_dev_real_dev(vlan_dev); | |
3436 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(vlan_dev); | |
3437 | u16 vid = vlan_dev_vlan_id(vlan_dev); | |
3438 | ||
3439 | if (mlxsw_sp_port_dev_check(real_dev)) | |
3440 | return mlxsw_sp_inetaddr_vport_event(vlan_dev, real_dev, event, | |
3441 | vid); | |
3442 | else if (netif_is_lag_master(real_dev)) | |
3443 | return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event, | |
3444 | vid); | |
3445 | else if (netif_is_bridge_master(real_dev) && | |
5f6935c6 | 3446 | mlxsw_sp_master_bridge(mlxsw_sp)->dev == real_dev) |
4724ba56 IS |
3447 | return mlxsw_sp_inetaddr_bridge_event(vlan_dev, real_dev, |
3448 | event); | |
3449 | ||
3450 | return 0; | |
3451 | } | |
3452 | ||
b1e45526 IS |
3453 | static int __mlxsw_sp_inetaddr_event(struct net_device *dev, |
3454 | unsigned long event) | |
3455 | { | |
3456 | if (mlxsw_sp_port_dev_check(dev)) | |
3457 | return mlxsw_sp_inetaddr_port_event(dev, event); | |
3458 | else if (netif_is_lag_master(dev)) | |
3459 | return mlxsw_sp_inetaddr_lag_event(dev, event); | |
3460 | else if (netif_is_bridge_master(dev)) | |
3461 | return mlxsw_sp_inetaddr_bridge_event(dev, dev, event); | |
3462 | else if (is_vlan_dev(dev)) | |
3463 | return mlxsw_sp_inetaddr_vlan_event(dev, event); | |
3464 | else | |
3465 | return 0; | |
3466 | } | |
3467 | ||
4724ba56 IS |
3468 | int mlxsw_sp_inetaddr_event(struct notifier_block *unused, |
3469 | unsigned long event, void *ptr) | |
3470 | { | |
3471 | struct in_ifaddr *ifa = (struct in_ifaddr *) ptr; | |
3472 | struct net_device *dev = ifa->ifa_dev->dev; | |
3473 | struct mlxsw_sp *mlxsw_sp; | |
bf95233e | 3474 | struct mlxsw_sp_rif *rif; |
4724ba56 IS |
3475 | int err = 0; |
3476 | ||
3477 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
3478 | if (!mlxsw_sp) | |
3479 | goto out; | |
3480 | ||
bf95233e AS |
3481 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
3482 | if (!mlxsw_sp_rif_should_config(rif, ifa->ifa_dev, event)) | |
4724ba56 IS |
3483 | goto out; |
3484 | ||
b1e45526 | 3485 | err = __mlxsw_sp_inetaddr_event(dev, event); |
4724ba56 IS |
3486 | out: |
3487 | return notifier_from_errno(err); | |
3488 | } | |
3489 | ||
bf95233e | 3490 | static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, |
4724ba56 IS |
3491 | const char *mac, int mtu) |
3492 | { | |
3493 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
3494 | int err; | |
3495 | ||
bf95233e | 3496 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); |
4724ba56 IS |
3497 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); |
3498 | if (err) | |
3499 | return err; | |
3500 | ||
3501 | mlxsw_reg_ritr_mtu_set(ritr_pl, mtu); | |
3502 | mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac); | |
3503 | mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE); | |
3504 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
3505 | } | |
3506 | ||
3507 | int mlxsw_sp_netdevice_router_port_event(struct net_device *dev) | |
3508 | { | |
3509 | struct mlxsw_sp *mlxsw_sp; | |
bf95233e | 3510 | struct mlxsw_sp_rif *rif; |
4724ba56 IS |
3511 | int err; |
3512 | ||
3513 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
3514 | if (!mlxsw_sp) | |
3515 | return 0; | |
3516 | ||
bf95233e AS |
3517 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
3518 | if (!rif) | |
4724ba56 IS |
3519 | return 0; |
3520 | ||
bf95233e | 3521 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, rif->f->fid, false); |
4724ba56 IS |
3522 | if (err) |
3523 | return err; | |
3524 | ||
bf95233e AS |
3525 | err = mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, dev->dev_addr, |
3526 | dev->mtu); | |
4724ba56 IS |
3527 | if (err) |
3528 | goto err_rif_edit; | |
3529 | ||
bf95233e | 3530 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, rif->f->fid, true); |
4724ba56 IS |
3531 | if (err) |
3532 | goto err_rif_fdb_op; | |
3533 | ||
bf95233e AS |
3534 | ether_addr_copy(rif->addr, dev->dev_addr); |
3535 | rif->mtu = dev->mtu; | |
4724ba56 | 3536 | |
bf95233e | 3537 | netdev_dbg(dev, "Updated RIF=%d\n", rif->rif_index); |
4724ba56 IS |
3538 | |
3539 | return 0; | |
3540 | ||
3541 | err_rif_fdb_op: | |
bf95233e | 3542 | mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, rif->addr, rif->mtu); |
4724ba56 | 3543 | err_rif_edit: |
bf95233e | 3544 | mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, rif->f->fid, true); |
4724ba56 IS |
3545 | return err; |
3546 | } | |
3547 | ||
b1e45526 IS |
3548 | static int mlxsw_sp_port_vrf_join(struct mlxsw_sp *mlxsw_sp, |
3549 | struct net_device *l3_dev) | |
7179eb5a | 3550 | { |
b1e45526 | 3551 | struct mlxsw_sp_rif *rif; |
7179eb5a | 3552 | |
b1e45526 IS |
3553 | /* If netdev is already associated with a RIF, then we need to |
3554 | * destroy it and create a new one with the new virtual router ID. | |
7179eb5a | 3555 | */ |
b1e45526 IS |
3556 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
3557 | if (rif) | |
3558 | __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN); | |
7179eb5a | 3559 | |
b1e45526 | 3560 | return __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_UP); |
7179eb5a IS |
3561 | } |
3562 | ||
b1e45526 IS |
3563 | static void mlxsw_sp_port_vrf_leave(struct mlxsw_sp *mlxsw_sp, |
3564 | struct net_device *l3_dev) | |
7179eb5a | 3565 | { |
b1e45526 | 3566 | struct mlxsw_sp_rif *rif; |
7179eb5a | 3567 | |
b1e45526 IS |
3568 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
3569 | if (!rif) | |
7179eb5a | 3570 | return; |
b1e45526 | 3571 | __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN); |
7179eb5a IS |
3572 | } |
3573 | ||
b1e45526 IS |
3574 | int mlxsw_sp_netdevice_vrf_event(struct net_device *l3_dev, unsigned long event, |
3575 | struct netdev_notifier_changeupper_info *info) | |
3d70e458 | 3576 | { |
b1e45526 IS |
3577 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); |
3578 | int err = 0; | |
3d70e458 | 3579 | |
b1e45526 IS |
3580 | if (!mlxsw_sp) |
3581 | return 0; | |
3d70e458 | 3582 | |
b1e45526 IS |
3583 | switch (event) { |
3584 | case NETDEV_PRECHANGEUPPER: | |
3585 | return 0; | |
3586 | case NETDEV_CHANGEUPPER: | |
3587 | if (info->linking) | |
3588 | err = mlxsw_sp_port_vrf_join(mlxsw_sp, l3_dev); | |
3589 | else | |
3590 | mlxsw_sp_port_vrf_leave(mlxsw_sp, l3_dev); | |
3591 | break; | |
3592 | } | |
3d70e458 | 3593 | |
b1e45526 | 3594 | return err; |
3d70e458 IS |
3595 | } |
3596 | ||
348b8fc3 IS |
3597 | static int mlxsw_sp_rifs_init(struct mlxsw_sp *mlxsw_sp) |
3598 | { | |
3599 | u64 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); | |
3600 | ||
3601 | mlxsw_sp->router->rifs = kcalloc(max_rifs, | |
3602 | sizeof(struct mlxsw_sp_rif *), | |
3603 | GFP_KERNEL); | |
3604 | if (!mlxsw_sp->router->rifs) | |
3605 | return -ENOMEM; | |
3606 | return 0; | |
3607 | } | |
3608 | ||
3609 | static void mlxsw_sp_rifs_fini(struct mlxsw_sp *mlxsw_sp) | |
3610 | { | |
3611 | int i; | |
3612 | ||
3613 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
3614 | WARN_ON_ONCE(mlxsw_sp->router->rifs[i]); | |
3615 | ||
3616 | kfree(mlxsw_sp->router->rifs); | |
3617 | } | |
3618 | ||
c3852ef7 IS |
3619 | static void mlxsw_sp_router_fib_dump_flush(struct notifier_block *nb) |
3620 | { | |
7e39d115 | 3621 | struct mlxsw_sp_router *router; |
c3852ef7 IS |
3622 | |
3623 | /* Flush pending FIB notifications and then flush the device's | |
3624 | * table before requesting another dump. The FIB notification | |
3625 | * block is unregistered, so no need to take RTNL. | |
3626 | */ | |
3627 | mlxsw_core_flush_owq(); | |
7e39d115 IS |
3628 | router = container_of(nb, struct mlxsw_sp_router, fib_nb); |
3629 | mlxsw_sp_router_fib_flush(router->mlxsw_sp); | |
c3852ef7 IS |
3630 | } |
3631 | ||
4724ba56 IS |
3632 | static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
3633 | { | |
3634 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
3635 | u64 max_rifs; | |
3636 | int err; | |
3637 | ||
3638 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS)) | |
3639 | return -EIO; | |
4724ba56 | 3640 | max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); |
4724ba56 IS |
3641 | |
3642 | mlxsw_reg_rgcr_pack(rgcr_pl, true); | |
3643 | mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs); | |
3644 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
3645 | if (err) | |
348b8fc3 | 3646 | return err; |
4724ba56 | 3647 | return 0; |
4724ba56 IS |
3648 | } |
3649 | ||
3650 | static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
3651 | { | |
3652 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
4724ba56 IS |
3653 | |
3654 | mlxsw_reg_rgcr_pack(rgcr_pl, false); | |
3655 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
4724ba56 IS |
3656 | } |
3657 | ||
b45f64d1 JP |
3658 | int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
3659 | { | |
9011b677 | 3660 | struct mlxsw_sp_router *router; |
b45f64d1 JP |
3661 | int err; |
3662 | ||
9011b677 IS |
3663 | router = kzalloc(sizeof(*mlxsw_sp->router), GFP_KERNEL); |
3664 | if (!router) | |
3665 | return -ENOMEM; | |
3666 | mlxsw_sp->router = router; | |
3667 | router->mlxsw_sp = mlxsw_sp; | |
3668 | ||
3669 | INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_neighs_list); | |
b45f64d1 JP |
3670 | err = __mlxsw_sp_router_init(mlxsw_sp); |
3671 | if (err) | |
9011b677 | 3672 | goto err_router_init; |
b45f64d1 | 3673 | |
348b8fc3 IS |
3674 | err = mlxsw_sp_rifs_init(mlxsw_sp); |
3675 | if (err) | |
3676 | goto err_rifs_init; | |
3677 | ||
9011b677 | 3678 | err = rhashtable_init(&mlxsw_sp->router->nexthop_ht, |
c53b8e1b IS |
3679 | &mlxsw_sp_nexthop_ht_params); |
3680 | if (err) | |
3681 | goto err_nexthop_ht_init; | |
3682 | ||
9011b677 | 3683 | err = rhashtable_init(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
3684 | &mlxsw_sp_nexthop_group_ht_params); |
3685 | if (err) | |
3686 | goto err_nexthop_group_ht_init; | |
3687 | ||
8494ab06 IS |
3688 | err = mlxsw_sp_lpm_init(mlxsw_sp); |
3689 | if (err) | |
3690 | goto err_lpm_init; | |
3691 | ||
b45f64d1 JP |
3692 | err = mlxsw_sp_vrs_init(mlxsw_sp); |
3693 | if (err) | |
3694 | goto err_vrs_init; | |
3695 | ||
8c9583a8 | 3696 | err = mlxsw_sp_neigh_init(mlxsw_sp); |
b45f64d1 JP |
3697 | if (err) |
3698 | goto err_neigh_init; | |
3699 | ||
7e39d115 IS |
3700 | mlxsw_sp->router->fib_nb.notifier_call = mlxsw_sp_router_fib_event; |
3701 | err = register_fib_notifier(&mlxsw_sp->router->fib_nb, | |
c3852ef7 IS |
3702 | mlxsw_sp_router_fib_dump_flush); |
3703 | if (err) | |
3704 | goto err_register_fib_notifier; | |
3705 | ||
b45f64d1 JP |
3706 | return 0; |
3707 | ||
c3852ef7 IS |
3708 | err_register_fib_notifier: |
3709 | mlxsw_sp_neigh_fini(mlxsw_sp); | |
b45f64d1 JP |
3710 | err_neigh_init: |
3711 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
3712 | err_vrs_init: | |
8494ab06 IS |
3713 | mlxsw_sp_lpm_fini(mlxsw_sp); |
3714 | err_lpm_init: | |
9011b677 | 3715 | rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht); |
e9ad5e7d | 3716 | err_nexthop_group_ht_init: |
9011b677 | 3717 | rhashtable_destroy(&mlxsw_sp->router->nexthop_ht); |
c53b8e1b | 3718 | err_nexthop_ht_init: |
348b8fc3 IS |
3719 | mlxsw_sp_rifs_fini(mlxsw_sp); |
3720 | err_rifs_init: | |
b45f64d1 | 3721 | __mlxsw_sp_router_fini(mlxsw_sp); |
9011b677 IS |
3722 | err_router_init: |
3723 | kfree(mlxsw_sp->router); | |
b45f64d1 JP |
3724 | return err; |
3725 | } | |
3726 | ||
3727 | void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
3728 | { | |
7e39d115 | 3729 | unregister_fib_notifier(&mlxsw_sp->router->fib_nb); |
b45f64d1 JP |
3730 | mlxsw_sp_neigh_fini(mlxsw_sp); |
3731 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
8494ab06 | 3732 | mlxsw_sp_lpm_fini(mlxsw_sp); |
9011b677 IS |
3733 | rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht); |
3734 | rhashtable_destroy(&mlxsw_sp->router->nexthop_ht); | |
348b8fc3 | 3735 | mlxsw_sp_rifs_fini(mlxsw_sp); |
b45f64d1 | 3736 | __mlxsw_sp_router_fini(mlxsw_sp); |
9011b677 | 3737 | kfree(mlxsw_sp->router); |
b45f64d1 | 3738 | } |