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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 | ||
4d93ceeb IS |
100 | struct mlxsw_sp_rif_subport { |
101 | struct mlxsw_sp_rif common; | |
102 | union { | |
103 | u16 system_port; | |
104 | u16 lag_id; | |
105 | }; | |
106 | u16 vid; | |
107 | bool lag; | |
108 | }; | |
109 | ||
e0c0afd8 AS |
110 | static unsigned int * |
111 | mlxsw_sp_rif_p_counter_get(struct mlxsw_sp_rif *rif, | |
112 | enum mlxsw_sp_rif_counter_dir dir) | |
113 | { | |
114 | switch (dir) { | |
115 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
116 | return &rif->counter_egress; | |
117 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
118 | return &rif->counter_ingress; | |
119 | } | |
120 | return NULL; | |
121 | } | |
122 | ||
123 | static bool | |
124 | mlxsw_sp_rif_counter_valid_get(struct mlxsw_sp_rif *rif, | |
125 | enum mlxsw_sp_rif_counter_dir dir) | |
126 | { | |
127 | switch (dir) { | |
128 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
129 | return rif->counter_egress_valid; | |
130 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
131 | return rif->counter_ingress_valid; | |
132 | } | |
133 | return false; | |
134 | } | |
135 | ||
136 | static void | |
137 | mlxsw_sp_rif_counter_valid_set(struct mlxsw_sp_rif *rif, | |
138 | enum mlxsw_sp_rif_counter_dir dir, | |
139 | bool valid) | |
140 | { | |
141 | switch (dir) { | |
142 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
143 | rif->counter_egress_valid = valid; | |
144 | break; | |
145 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
146 | rif->counter_ingress_valid = valid; | |
147 | break; | |
148 | } | |
149 | } | |
150 | ||
151 | static int mlxsw_sp_rif_counter_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, | |
152 | unsigned int counter_index, bool enable, | |
153 | enum mlxsw_sp_rif_counter_dir dir) | |
154 | { | |
155 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
156 | bool is_egress = false; | |
157 | int err; | |
158 | ||
159 | if (dir == MLXSW_SP_RIF_COUNTER_EGRESS) | |
160 | is_egress = true; | |
161 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); | |
162 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
163 | if (err) | |
164 | return err; | |
165 | ||
166 | mlxsw_reg_ritr_counter_pack(ritr_pl, counter_index, enable, | |
167 | is_egress); | |
168 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
169 | } | |
170 | ||
171 | int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp, | |
172 | struct mlxsw_sp_rif *rif, | |
173 | enum mlxsw_sp_rif_counter_dir dir, u64 *cnt) | |
174 | { | |
175 | char ricnt_pl[MLXSW_REG_RICNT_LEN]; | |
176 | unsigned int *p_counter_index; | |
177 | bool valid; | |
178 | int err; | |
179 | ||
180 | valid = mlxsw_sp_rif_counter_valid_get(rif, dir); | |
181 | if (!valid) | |
182 | return -EINVAL; | |
183 | ||
184 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); | |
185 | if (!p_counter_index) | |
186 | return -EINVAL; | |
187 | mlxsw_reg_ricnt_pack(ricnt_pl, *p_counter_index, | |
188 | MLXSW_REG_RICNT_OPCODE_NOP); | |
189 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); | |
190 | if (err) | |
191 | return err; | |
192 | *cnt = mlxsw_reg_ricnt_good_unicast_packets_get(ricnt_pl); | |
193 | return 0; | |
194 | } | |
195 | ||
196 | static int mlxsw_sp_rif_counter_clear(struct mlxsw_sp *mlxsw_sp, | |
197 | unsigned int counter_index) | |
198 | { | |
199 | char ricnt_pl[MLXSW_REG_RICNT_LEN]; | |
200 | ||
201 | mlxsw_reg_ricnt_pack(ricnt_pl, counter_index, | |
202 | MLXSW_REG_RICNT_OPCODE_CLEAR); | |
203 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); | |
204 | } | |
205 | ||
206 | int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp *mlxsw_sp, | |
207 | struct mlxsw_sp_rif *rif, | |
208 | enum mlxsw_sp_rif_counter_dir dir) | |
209 | { | |
210 | unsigned int *p_counter_index; | |
211 | int err; | |
212 | ||
213 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); | |
214 | if (!p_counter_index) | |
215 | return -EINVAL; | |
216 | err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
217 | p_counter_index); | |
218 | if (err) | |
219 | return err; | |
220 | ||
221 | err = mlxsw_sp_rif_counter_clear(mlxsw_sp, *p_counter_index); | |
222 | if (err) | |
223 | goto err_counter_clear; | |
224 | ||
225 | err = mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index, | |
226 | *p_counter_index, true, dir); | |
227 | if (err) | |
228 | goto err_counter_edit; | |
229 | mlxsw_sp_rif_counter_valid_set(rif, dir, true); | |
230 | return 0; | |
231 | ||
232 | err_counter_edit: | |
233 | err_counter_clear: | |
234 | mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
235 | *p_counter_index); | |
236 | return err; | |
237 | } | |
238 | ||
239 | void mlxsw_sp_rif_counter_free(struct mlxsw_sp *mlxsw_sp, | |
240 | struct mlxsw_sp_rif *rif, | |
241 | enum mlxsw_sp_rif_counter_dir dir) | |
242 | { | |
243 | unsigned int *p_counter_index; | |
244 | ||
6b1206bb AS |
245 | if (!mlxsw_sp_rif_counter_valid_get(rif, dir)) |
246 | return; | |
247 | ||
e0c0afd8 AS |
248 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); |
249 | if (WARN_ON(!p_counter_index)) | |
250 | return; | |
251 | mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index, | |
252 | *p_counter_index, false, dir); | |
253 | mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
254 | *p_counter_index); | |
255 | mlxsw_sp_rif_counter_valid_set(rif, dir, false); | |
256 | } | |
257 | ||
4724ba56 IS |
258 | static struct mlxsw_sp_rif * |
259 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
260 | const struct net_device *dev); | |
261 | ||
9011b677 IS |
262 | #define MLXSW_SP_PREFIX_COUNT (sizeof(struct in6_addr) * BITS_PER_BYTE) |
263 | ||
264 | struct mlxsw_sp_prefix_usage { | |
265 | DECLARE_BITMAP(b, MLXSW_SP_PREFIX_COUNT); | |
266 | }; | |
267 | ||
53342023 JP |
268 | #define mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) \ |
269 | for_each_set_bit(prefix, (prefix_usage)->b, MLXSW_SP_PREFIX_COUNT) | |
270 | ||
6b75c480 JP |
271 | static bool |
272 | mlxsw_sp_prefix_usage_subset(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
273 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
274 | { | |
275 | unsigned char prefix; | |
276 | ||
277 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage1) { | |
278 | if (!test_bit(prefix, prefix_usage2->b)) | |
279 | return false; | |
280 | } | |
281 | return true; | |
282 | } | |
283 | ||
53342023 JP |
284 | static bool |
285 | mlxsw_sp_prefix_usage_eq(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
286 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
287 | { | |
288 | return !memcmp(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
289 | } | |
290 | ||
6b75c480 JP |
291 | static bool |
292 | mlxsw_sp_prefix_usage_none(struct mlxsw_sp_prefix_usage *prefix_usage) | |
293 | { | |
294 | struct mlxsw_sp_prefix_usage prefix_usage_none = {{ 0 } }; | |
295 | ||
296 | return mlxsw_sp_prefix_usage_eq(prefix_usage, &prefix_usage_none); | |
297 | } | |
298 | ||
299 | static void | |
300 | mlxsw_sp_prefix_usage_cpy(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
301 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
302 | { | |
303 | memcpy(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
304 | } | |
305 | ||
5e9c16cc JP |
306 | static void |
307 | mlxsw_sp_prefix_usage_set(struct mlxsw_sp_prefix_usage *prefix_usage, | |
308 | unsigned char prefix_len) | |
309 | { | |
310 | set_bit(prefix_len, prefix_usage->b); | |
311 | } | |
312 | ||
313 | static void | |
314 | mlxsw_sp_prefix_usage_clear(struct mlxsw_sp_prefix_usage *prefix_usage, | |
315 | unsigned char prefix_len) | |
316 | { | |
317 | clear_bit(prefix_len, prefix_usage->b); | |
318 | } | |
319 | ||
320 | struct mlxsw_sp_fib_key { | |
321 | unsigned char addr[sizeof(struct in6_addr)]; | |
322 | unsigned char prefix_len; | |
323 | }; | |
324 | ||
61c503f9 JP |
325 | enum mlxsw_sp_fib_entry_type { |
326 | MLXSW_SP_FIB_ENTRY_TYPE_REMOTE, | |
327 | MLXSW_SP_FIB_ENTRY_TYPE_LOCAL, | |
328 | MLXSW_SP_FIB_ENTRY_TYPE_TRAP, | |
329 | }; | |
330 | ||
a7ff87ac | 331 | struct mlxsw_sp_nexthop_group; |
9011b677 | 332 | struct mlxsw_sp_fib; |
a7ff87ac | 333 | |
9aecce1c IS |
334 | struct mlxsw_sp_fib_node { |
335 | struct list_head entry_list; | |
b45f64d1 | 336 | struct list_head list; |
9aecce1c | 337 | struct rhash_head ht_node; |
76610ebb | 338 | struct mlxsw_sp_fib *fib; |
5e9c16cc | 339 | struct mlxsw_sp_fib_key key; |
9aecce1c IS |
340 | }; |
341 | ||
342 | struct mlxsw_sp_fib_entry_params { | |
343 | u32 tb_id; | |
344 | u32 prio; | |
345 | u8 tos; | |
346 | u8 type; | |
347 | }; | |
348 | ||
349 | struct mlxsw_sp_fib_entry { | |
350 | struct list_head list; | |
351 | struct mlxsw_sp_fib_node *fib_node; | |
61c503f9 | 352 | enum mlxsw_sp_fib_entry_type type; |
a7ff87ac JP |
353 | struct list_head nexthop_group_node; |
354 | struct mlxsw_sp_nexthop_group *nh_group; | |
9aecce1c | 355 | struct mlxsw_sp_fib_entry_params params; |
013b20f9 | 356 | bool offloaded; |
5e9c16cc JP |
357 | }; |
358 | ||
9011b677 IS |
359 | enum mlxsw_sp_l3proto { |
360 | MLXSW_SP_L3_PROTO_IPV4, | |
361 | MLXSW_SP_L3_PROTO_IPV6, | |
362 | }; | |
363 | ||
364 | struct mlxsw_sp_lpm_tree { | |
365 | u8 id; /* tree ID */ | |
366 | unsigned int ref_count; | |
367 | enum mlxsw_sp_l3proto proto; | |
368 | struct mlxsw_sp_prefix_usage prefix_usage; | |
369 | }; | |
370 | ||
5e9c16cc JP |
371 | struct mlxsw_sp_fib { |
372 | struct rhashtable ht; | |
9aecce1c | 373 | struct list_head node_list; |
76610ebb IS |
374 | struct mlxsw_sp_vr *vr; |
375 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
5e9c16cc JP |
376 | unsigned long prefix_ref_count[MLXSW_SP_PREFIX_COUNT]; |
377 | struct mlxsw_sp_prefix_usage prefix_usage; | |
76610ebb | 378 | enum mlxsw_sp_l3proto proto; |
5e9c16cc JP |
379 | }; |
380 | ||
9011b677 IS |
381 | struct mlxsw_sp_vr { |
382 | u16 id; /* virtual router ID */ | |
383 | u32 tb_id; /* kernel fib table id */ | |
384 | unsigned int rif_count; | |
385 | struct mlxsw_sp_fib *fib4; | |
386 | }; | |
387 | ||
9aecce1c | 388 | static const struct rhashtable_params mlxsw_sp_fib_ht_params; |
5e9c16cc | 389 | |
76610ebb IS |
390 | static struct mlxsw_sp_fib *mlxsw_sp_fib_create(struct mlxsw_sp_vr *vr, |
391 | enum mlxsw_sp_l3proto proto) | |
5e9c16cc JP |
392 | { |
393 | struct mlxsw_sp_fib *fib; | |
394 | int err; | |
395 | ||
396 | fib = kzalloc(sizeof(*fib), GFP_KERNEL); | |
397 | if (!fib) | |
398 | return ERR_PTR(-ENOMEM); | |
399 | err = rhashtable_init(&fib->ht, &mlxsw_sp_fib_ht_params); | |
400 | if (err) | |
401 | goto err_rhashtable_init; | |
9aecce1c | 402 | INIT_LIST_HEAD(&fib->node_list); |
76610ebb IS |
403 | fib->proto = proto; |
404 | fib->vr = vr; | |
5e9c16cc JP |
405 | return fib; |
406 | ||
407 | err_rhashtable_init: | |
408 | kfree(fib); | |
409 | return ERR_PTR(err); | |
410 | } | |
411 | ||
412 | static void mlxsw_sp_fib_destroy(struct mlxsw_sp_fib *fib) | |
413 | { | |
9aecce1c | 414 | WARN_ON(!list_empty(&fib->node_list)); |
76610ebb | 415 | WARN_ON(fib->lpm_tree); |
5e9c16cc JP |
416 | rhashtable_destroy(&fib->ht); |
417 | kfree(fib); | |
418 | } | |
419 | ||
53342023 | 420 | static struct mlxsw_sp_lpm_tree * |
382dbb40 | 421 | mlxsw_sp_lpm_tree_find_unused(struct mlxsw_sp *mlxsw_sp) |
53342023 JP |
422 | { |
423 | static struct mlxsw_sp_lpm_tree *lpm_tree; | |
424 | int i; | |
425 | ||
9011b677 IS |
426 | for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { |
427 | lpm_tree = &mlxsw_sp->router->lpm.trees[i]; | |
382dbb40 IS |
428 | if (lpm_tree->ref_count == 0) |
429 | return lpm_tree; | |
53342023 JP |
430 | } |
431 | return NULL; | |
432 | } | |
433 | ||
434 | static int mlxsw_sp_lpm_tree_alloc(struct mlxsw_sp *mlxsw_sp, | |
435 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
436 | { | |
437 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
438 | ||
1a9234e6 IS |
439 | mlxsw_reg_ralta_pack(ralta_pl, true, |
440 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
441 | lpm_tree->id); | |
53342023 JP |
442 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
443 | } | |
444 | ||
445 | static int mlxsw_sp_lpm_tree_free(struct mlxsw_sp *mlxsw_sp, | |
446 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
447 | { | |
448 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
449 | ||
1a9234e6 IS |
450 | mlxsw_reg_ralta_pack(ralta_pl, false, |
451 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
452 | lpm_tree->id); | |
53342023 JP |
453 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
454 | } | |
455 | ||
456 | static int | |
457 | mlxsw_sp_lpm_tree_left_struct_set(struct mlxsw_sp *mlxsw_sp, | |
458 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
459 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
460 | { | |
461 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
462 | u8 root_bin = 0; | |
463 | u8 prefix; | |
464 | u8 last_prefix = MLXSW_REG_RALST_BIN_NO_CHILD; | |
465 | ||
466 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) | |
467 | root_bin = prefix; | |
468 | ||
469 | mlxsw_reg_ralst_pack(ralst_pl, root_bin, lpm_tree->id); | |
470 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) { | |
471 | if (prefix == 0) | |
472 | continue; | |
473 | mlxsw_reg_ralst_bin_pack(ralst_pl, prefix, last_prefix, | |
474 | MLXSW_REG_RALST_BIN_NO_CHILD); | |
475 | last_prefix = prefix; | |
476 | } | |
477 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); | |
478 | } | |
479 | ||
480 | static struct mlxsw_sp_lpm_tree * | |
481 | mlxsw_sp_lpm_tree_create(struct mlxsw_sp *mlxsw_sp, | |
482 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 483 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
484 | { |
485 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
486 | int err; | |
487 | ||
382dbb40 | 488 | lpm_tree = mlxsw_sp_lpm_tree_find_unused(mlxsw_sp); |
53342023 JP |
489 | if (!lpm_tree) |
490 | return ERR_PTR(-EBUSY); | |
491 | lpm_tree->proto = proto; | |
492 | err = mlxsw_sp_lpm_tree_alloc(mlxsw_sp, lpm_tree); | |
493 | if (err) | |
494 | return ERR_PTR(err); | |
495 | ||
496 | err = mlxsw_sp_lpm_tree_left_struct_set(mlxsw_sp, prefix_usage, | |
497 | lpm_tree); | |
498 | if (err) | |
499 | goto err_left_struct_set; | |
2083d367 JP |
500 | memcpy(&lpm_tree->prefix_usage, prefix_usage, |
501 | sizeof(lpm_tree->prefix_usage)); | |
53342023 JP |
502 | return lpm_tree; |
503 | ||
504 | err_left_struct_set: | |
505 | mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); | |
506 | return ERR_PTR(err); | |
507 | } | |
508 | ||
509 | static int mlxsw_sp_lpm_tree_destroy(struct mlxsw_sp *mlxsw_sp, | |
510 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
511 | { | |
512 | return mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); | |
513 | } | |
514 | ||
515 | static struct mlxsw_sp_lpm_tree * | |
516 | mlxsw_sp_lpm_tree_get(struct mlxsw_sp *mlxsw_sp, | |
517 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 518 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
519 | { |
520 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
521 | int i; | |
522 | ||
9011b677 IS |
523 | for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { |
524 | lpm_tree = &mlxsw_sp->router->lpm.trees[i]; | |
8b99becd JP |
525 | if (lpm_tree->ref_count != 0 && |
526 | lpm_tree->proto == proto && | |
53342023 JP |
527 | mlxsw_sp_prefix_usage_eq(&lpm_tree->prefix_usage, |
528 | prefix_usage)) | |
529 | goto inc_ref_count; | |
530 | } | |
531 | lpm_tree = mlxsw_sp_lpm_tree_create(mlxsw_sp, prefix_usage, | |
382dbb40 | 532 | proto); |
53342023 JP |
533 | if (IS_ERR(lpm_tree)) |
534 | return lpm_tree; | |
535 | ||
536 | inc_ref_count: | |
537 | lpm_tree->ref_count++; | |
538 | return lpm_tree; | |
539 | } | |
540 | ||
541 | static int mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp, | |
542 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
543 | { | |
544 | if (--lpm_tree->ref_count == 0) | |
545 | return mlxsw_sp_lpm_tree_destroy(mlxsw_sp, lpm_tree); | |
546 | return 0; | |
547 | } | |
548 | ||
8494ab06 IS |
549 | #define MLXSW_SP_LPM_TREE_MIN 2 /* trees 0 and 1 are reserved */ |
550 | ||
551 | static int mlxsw_sp_lpm_init(struct mlxsw_sp *mlxsw_sp) | |
53342023 JP |
552 | { |
553 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
8494ab06 | 554 | u64 max_trees; |
53342023 JP |
555 | int i; |
556 | ||
8494ab06 IS |
557 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LPM_TREES)) |
558 | return -EIO; | |
559 | ||
560 | max_trees = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LPM_TREES); | |
9011b677 IS |
561 | mlxsw_sp->router->lpm.tree_count = max_trees - MLXSW_SP_LPM_TREE_MIN; |
562 | mlxsw_sp->router->lpm.trees = kcalloc(mlxsw_sp->router->lpm.tree_count, | |
8494ab06 IS |
563 | sizeof(struct mlxsw_sp_lpm_tree), |
564 | GFP_KERNEL); | |
9011b677 | 565 | if (!mlxsw_sp->router->lpm.trees) |
8494ab06 IS |
566 | return -ENOMEM; |
567 | ||
9011b677 IS |
568 | for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { |
569 | lpm_tree = &mlxsw_sp->router->lpm.trees[i]; | |
53342023 JP |
570 | lpm_tree->id = i + MLXSW_SP_LPM_TREE_MIN; |
571 | } | |
8494ab06 IS |
572 | |
573 | return 0; | |
574 | } | |
575 | ||
576 | static void mlxsw_sp_lpm_fini(struct mlxsw_sp *mlxsw_sp) | |
577 | { | |
9011b677 | 578 | kfree(mlxsw_sp->router->lpm.trees); |
53342023 JP |
579 | } |
580 | ||
76610ebb IS |
581 | static bool mlxsw_sp_vr_is_used(const struct mlxsw_sp_vr *vr) |
582 | { | |
583 | return !!vr->fib4; | |
584 | } | |
585 | ||
6b75c480 JP |
586 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find_unused(struct mlxsw_sp *mlxsw_sp) |
587 | { | |
588 | struct mlxsw_sp_vr *vr; | |
589 | int i; | |
590 | ||
c1a38311 | 591 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 592 | vr = &mlxsw_sp->router->vrs[i]; |
76610ebb | 593 | if (!mlxsw_sp_vr_is_used(vr)) |
6b75c480 JP |
594 | return vr; |
595 | } | |
596 | return NULL; | |
597 | } | |
598 | ||
599 | static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 600 | const struct mlxsw_sp_fib *fib) |
6b75c480 JP |
601 | { |
602 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
603 | ||
76610ebb IS |
604 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
605 | (enum mlxsw_reg_ralxx_protocol) fib->proto, | |
606 | fib->lpm_tree->id); | |
6b75c480 JP |
607 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
608 | } | |
609 | ||
610 | static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 611 | const struct mlxsw_sp_fib *fib) |
6b75c480 JP |
612 | { |
613 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
614 | ||
615 | /* Bind to tree 0 which is default */ | |
76610ebb IS |
616 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
617 | (enum mlxsw_reg_ralxx_protocol) fib->proto, 0); | |
6b75c480 JP |
618 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
619 | } | |
620 | ||
621 | static u32 mlxsw_sp_fix_tb_id(u32 tb_id) | |
622 | { | |
623 | /* For our purpose, squash main and local table into one */ | |
624 | if (tb_id == RT_TABLE_LOCAL) | |
625 | tb_id = RT_TABLE_MAIN; | |
626 | return tb_id; | |
627 | } | |
628 | ||
629 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 630 | u32 tb_id) |
6b75c480 JP |
631 | { |
632 | struct mlxsw_sp_vr *vr; | |
633 | int i; | |
634 | ||
635 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
9497c042 | 636 | |
c1a38311 | 637 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 638 | vr = &mlxsw_sp->router->vrs[i]; |
76610ebb | 639 | if (mlxsw_sp_vr_is_used(vr) && vr->tb_id == tb_id) |
6b75c480 JP |
640 | return vr; |
641 | } | |
642 | return NULL; | |
643 | } | |
644 | ||
76610ebb IS |
645 | static struct mlxsw_sp_fib *mlxsw_sp_vr_fib(const struct mlxsw_sp_vr *vr, |
646 | enum mlxsw_sp_l3proto proto) | |
647 | { | |
648 | switch (proto) { | |
649 | case MLXSW_SP_L3_PROTO_IPV4: | |
650 | return vr->fib4; | |
651 | case MLXSW_SP_L3_PROTO_IPV6: | |
652 | BUG_ON(1); | |
653 | } | |
654 | return NULL; | |
655 | } | |
656 | ||
6b75c480 | 657 | static struct mlxsw_sp_vr *mlxsw_sp_vr_create(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 658 | u32 tb_id) |
6b75c480 | 659 | { |
6b75c480 | 660 | struct mlxsw_sp_vr *vr; |
6b75c480 JP |
661 | |
662 | vr = mlxsw_sp_vr_find_unused(mlxsw_sp); | |
663 | if (!vr) | |
664 | return ERR_PTR(-EBUSY); | |
76610ebb IS |
665 | vr->fib4 = mlxsw_sp_fib_create(vr, MLXSW_SP_L3_PROTO_IPV4); |
666 | if (IS_ERR(vr->fib4)) | |
667 | return ERR_CAST(vr->fib4); | |
6b75c480 | 668 | vr->tb_id = tb_id; |
6b75c480 | 669 | return vr; |
6b75c480 JP |
670 | } |
671 | ||
76610ebb | 672 | static void mlxsw_sp_vr_destroy(struct mlxsw_sp_vr *vr) |
6b75c480 | 673 | { |
76610ebb IS |
674 | mlxsw_sp_fib_destroy(vr->fib4); |
675 | vr->fib4 = NULL; | |
6b75c480 JP |
676 | } |
677 | ||
678 | static int | |
76610ebb | 679 | mlxsw_sp_vr_lpm_tree_check(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fib *fib, |
6b75c480 JP |
680 | struct mlxsw_sp_prefix_usage *req_prefix_usage) |
681 | { | |
76610ebb | 682 | struct mlxsw_sp_lpm_tree *lpm_tree = fib->lpm_tree; |
f7df4923 IS |
683 | struct mlxsw_sp_lpm_tree *new_tree; |
684 | int err; | |
6b75c480 | 685 | |
f7df4923 | 686 | if (mlxsw_sp_prefix_usage_eq(req_prefix_usage, &lpm_tree->prefix_usage)) |
6b75c480 JP |
687 | return 0; |
688 | ||
f7df4923 | 689 | new_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, req_prefix_usage, |
76610ebb | 690 | fib->proto); |
f7df4923 | 691 | if (IS_ERR(new_tree)) { |
6b75c480 JP |
692 | /* We failed to get a tree according to the required |
693 | * prefix usage. However, the current tree might be still good | |
694 | * for us if our requirement is subset of the prefixes used | |
695 | * in the tree. | |
696 | */ | |
697 | if (mlxsw_sp_prefix_usage_subset(req_prefix_usage, | |
f7df4923 | 698 | &lpm_tree->prefix_usage)) |
6b75c480 | 699 | return 0; |
f7df4923 | 700 | return PTR_ERR(new_tree); |
6b75c480 JP |
701 | } |
702 | ||
f7df4923 | 703 | /* Prevent packet loss by overwriting existing binding */ |
76610ebb IS |
704 | fib->lpm_tree = new_tree; |
705 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib); | |
f7df4923 IS |
706 | if (err) |
707 | goto err_tree_bind; | |
708 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
709 | ||
710 | return 0; | |
711 | ||
712 | err_tree_bind: | |
76610ebb | 713 | fib->lpm_tree = lpm_tree; |
f7df4923 IS |
714 | mlxsw_sp_lpm_tree_put(mlxsw_sp, new_tree); |
715 | return err; | |
6b75c480 JP |
716 | } |
717 | ||
76610ebb | 718 | static struct mlxsw_sp_vr *mlxsw_sp_vr_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id) |
6b75c480 JP |
719 | { |
720 | struct mlxsw_sp_vr *vr; | |
6b75c480 JP |
721 | |
722 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
76610ebb IS |
723 | vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id); |
724 | if (!vr) | |
725 | vr = mlxsw_sp_vr_create(mlxsw_sp, tb_id); | |
6b75c480 JP |
726 | return vr; |
727 | } | |
728 | ||
76610ebb | 729 | static void mlxsw_sp_vr_put(struct mlxsw_sp_vr *vr) |
6b75c480 | 730 | { |
6913229e | 731 | if (!vr->rif_count && list_empty(&vr->fib4->node_list)) |
76610ebb | 732 | mlxsw_sp_vr_destroy(vr); |
6b75c480 JP |
733 | } |
734 | ||
9497c042 | 735 | static int mlxsw_sp_vrs_init(struct mlxsw_sp *mlxsw_sp) |
6b75c480 JP |
736 | { |
737 | struct mlxsw_sp_vr *vr; | |
c1a38311 | 738 | u64 max_vrs; |
6b75c480 JP |
739 | int i; |
740 | ||
c1a38311 | 741 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_VRS)) |
9497c042 NF |
742 | return -EIO; |
743 | ||
c1a38311 | 744 | max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); |
9011b677 IS |
745 | mlxsw_sp->router->vrs = kcalloc(max_vrs, sizeof(struct mlxsw_sp_vr), |
746 | GFP_KERNEL); | |
747 | if (!mlxsw_sp->router->vrs) | |
9497c042 NF |
748 | return -ENOMEM; |
749 | ||
c1a38311 | 750 | for (i = 0; i < max_vrs; i++) { |
9011b677 | 751 | vr = &mlxsw_sp->router->vrs[i]; |
6b75c480 JP |
752 | vr->id = i; |
753 | } | |
9497c042 NF |
754 | |
755 | return 0; | |
756 | } | |
757 | ||
ac571de9 IS |
758 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp); |
759 | ||
9497c042 NF |
760 | static void mlxsw_sp_vrs_fini(struct mlxsw_sp *mlxsw_sp) |
761 | { | |
3057224e IS |
762 | /* At this stage we're guaranteed not to have new incoming |
763 | * FIB notifications and the work queue is free from FIBs | |
764 | * sitting on top of mlxsw netdevs. However, we can still | |
765 | * have other FIBs queued. Flush the queue before flushing | |
766 | * the device's tables. No need for locks, as we're the only | |
767 | * writer. | |
768 | */ | |
769 | mlxsw_core_flush_owq(); | |
ac571de9 | 770 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
9011b677 | 771 | kfree(mlxsw_sp->router->vrs); |
6b75c480 JP |
772 | } |
773 | ||
6cf3c971 | 774 | struct mlxsw_sp_neigh_key { |
33b1341c | 775 | struct neighbour *n; |
6cf3c971 JP |
776 | }; |
777 | ||
778 | struct mlxsw_sp_neigh_entry { | |
9665b745 | 779 | struct list_head rif_list_node; |
6cf3c971 JP |
780 | struct rhash_head ht_node; |
781 | struct mlxsw_sp_neigh_key key; | |
782 | u16 rif; | |
5c8802f1 | 783 | bool connected; |
a6bf9e93 | 784 | unsigned char ha[ETH_ALEN]; |
a7ff87ac JP |
785 | struct list_head nexthop_list; /* list of nexthops using |
786 | * this neigh entry | |
787 | */ | |
b2157149 | 788 | struct list_head nexthop_neighs_list_node; |
6cf3c971 JP |
789 | }; |
790 | ||
791 | static const struct rhashtable_params mlxsw_sp_neigh_ht_params = { | |
792 | .key_offset = offsetof(struct mlxsw_sp_neigh_entry, key), | |
793 | .head_offset = offsetof(struct mlxsw_sp_neigh_entry, ht_node), | |
794 | .key_len = sizeof(struct mlxsw_sp_neigh_key), | |
795 | }; | |
796 | ||
6cf3c971 | 797 | static struct mlxsw_sp_neigh_entry * |
5c8802f1 IS |
798 | mlxsw_sp_neigh_entry_alloc(struct mlxsw_sp *mlxsw_sp, struct neighbour *n, |
799 | u16 rif) | |
6cf3c971 JP |
800 | { |
801 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
802 | ||
5c8802f1 | 803 | neigh_entry = kzalloc(sizeof(*neigh_entry), GFP_KERNEL); |
6cf3c971 JP |
804 | if (!neigh_entry) |
805 | return NULL; | |
5c8802f1 | 806 | |
33b1341c | 807 | neigh_entry->key.n = n; |
6cf3c971 | 808 | neigh_entry->rif = rif; |
a7ff87ac | 809 | INIT_LIST_HEAD(&neigh_entry->nexthop_list); |
5c8802f1 | 810 | |
6cf3c971 JP |
811 | return neigh_entry; |
812 | } | |
813 | ||
5c8802f1 | 814 | static void mlxsw_sp_neigh_entry_free(struct mlxsw_sp_neigh_entry *neigh_entry) |
6cf3c971 JP |
815 | { |
816 | kfree(neigh_entry); | |
817 | } | |
818 | ||
5c8802f1 IS |
819 | static int |
820 | mlxsw_sp_neigh_entry_insert(struct mlxsw_sp *mlxsw_sp, | |
821 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 822 | { |
9011b677 | 823 | return rhashtable_insert_fast(&mlxsw_sp->router->neigh_ht, |
5c8802f1 IS |
824 | &neigh_entry->ht_node, |
825 | mlxsw_sp_neigh_ht_params); | |
826 | } | |
6cf3c971 | 827 | |
5c8802f1 IS |
828 | static void |
829 | mlxsw_sp_neigh_entry_remove(struct mlxsw_sp *mlxsw_sp, | |
830 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
831 | { | |
9011b677 | 832 | rhashtable_remove_fast(&mlxsw_sp->router->neigh_ht, |
5c8802f1 IS |
833 | &neigh_entry->ht_node, |
834 | mlxsw_sp_neigh_ht_params); | |
6cf3c971 JP |
835 | } |
836 | ||
5c8802f1 IS |
837 | static struct mlxsw_sp_neigh_entry * |
838 | mlxsw_sp_neigh_entry_create(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
6cf3c971 | 839 | { |
6cf3c971 | 840 | struct mlxsw_sp_neigh_entry *neigh_entry; |
bf95233e | 841 | struct mlxsw_sp_rif *rif; |
6cf3c971 JP |
842 | int err; |
843 | ||
bf95233e AS |
844 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, n->dev); |
845 | if (!rif) | |
5c8802f1 | 846 | return ERR_PTR(-EINVAL); |
6cf3c971 | 847 | |
bf95233e | 848 | neigh_entry = mlxsw_sp_neigh_entry_alloc(mlxsw_sp, n, rif->rif_index); |
6cf3c971 | 849 | if (!neigh_entry) |
5c8802f1 IS |
850 | return ERR_PTR(-ENOMEM); |
851 | ||
6cf3c971 JP |
852 | err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry); |
853 | if (err) | |
854 | goto err_neigh_entry_insert; | |
5c8802f1 | 855 | |
bf95233e | 856 | list_add(&neigh_entry->rif_list_node, &rif->neigh_list); |
9665b745 | 857 | |
5c8802f1 | 858 | return neigh_entry; |
6cf3c971 JP |
859 | |
860 | err_neigh_entry_insert: | |
5c8802f1 IS |
861 | mlxsw_sp_neigh_entry_free(neigh_entry); |
862 | return ERR_PTR(err); | |
6cf3c971 JP |
863 | } |
864 | ||
5c8802f1 IS |
865 | static void |
866 | mlxsw_sp_neigh_entry_destroy(struct mlxsw_sp *mlxsw_sp, | |
867 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 868 | { |
9665b745 | 869 | list_del(&neigh_entry->rif_list_node); |
5c8802f1 IS |
870 | mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry); |
871 | mlxsw_sp_neigh_entry_free(neigh_entry); | |
872 | } | |
6cf3c971 | 873 | |
5c8802f1 IS |
874 | static struct mlxsw_sp_neigh_entry * |
875 | mlxsw_sp_neigh_entry_lookup(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
876 | { | |
877 | struct mlxsw_sp_neigh_key key; | |
6cf3c971 | 878 | |
5c8802f1 | 879 | key.n = n; |
9011b677 | 880 | return rhashtable_lookup_fast(&mlxsw_sp->router->neigh_ht, |
5c8802f1 | 881 | &key, mlxsw_sp_neigh_ht_params); |
6cf3c971 JP |
882 | } |
883 | ||
c723c735 YG |
884 | static void |
885 | mlxsw_sp_router_neighs_update_interval_init(struct mlxsw_sp *mlxsw_sp) | |
886 | { | |
887 | unsigned long interval = NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME); | |
888 | ||
9011b677 | 889 | mlxsw_sp->router->neighs_update.interval = jiffies_to_msecs(interval); |
c723c735 YG |
890 | } |
891 | ||
892 | static void mlxsw_sp_router_neigh_ent_ipv4_process(struct mlxsw_sp *mlxsw_sp, | |
893 | char *rauhtd_pl, | |
894 | int ent_index) | |
895 | { | |
896 | struct net_device *dev; | |
897 | struct neighbour *n; | |
898 | __be32 dipn; | |
899 | u32 dip; | |
900 | u16 rif; | |
901 | ||
902 | mlxsw_reg_rauhtd_ent_ipv4_unpack(rauhtd_pl, ent_index, &rif, &dip); | |
903 | ||
5f9efffb | 904 | if (!mlxsw_sp->router->rifs[rif]) { |
c723c735 YG |
905 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n"); |
906 | return; | |
907 | } | |
908 | ||
909 | dipn = htonl(dip); | |
5f9efffb | 910 | dev = mlxsw_sp->router->rifs[rif]->dev; |
c723c735 YG |
911 | n = neigh_lookup(&arp_tbl, &dipn, dev); |
912 | if (!n) { | |
913 | netdev_err(dev, "Failed to find matching neighbour for IP=%pI4h\n", | |
914 | &dip); | |
915 | return; | |
916 | } | |
917 | ||
918 | netdev_dbg(dev, "Updating neighbour with IP=%pI4h\n", &dip); | |
919 | neigh_event_send(n, NULL); | |
920 | neigh_release(n); | |
921 | } | |
922 | ||
923 | static void mlxsw_sp_router_neigh_rec_ipv4_process(struct mlxsw_sp *mlxsw_sp, | |
924 | char *rauhtd_pl, | |
925 | int rec_index) | |
926 | { | |
927 | u8 num_entries; | |
928 | int i; | |
929 | ||
930 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
931 | rec_index); | |
932 | /* Hardware starts counting at 0, so add 1. */ | |
933 | num_entries++; | |
934 | ||
935 | /* Each record consists of several neighbour entries. */ | |
936 | for (i = 0; i < num_entries; i++) { | |
937 | int ent_index; | |
938 | ||
939 | ent_index = rec_index * MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC + i; | |
940 | mlxsw_sp_router_neigh_ent_ipv4_process(mlxsw_sp, rauhtd_pl, | |
941 | ent_index); | |
942 | } | |
943 | ||
944 | } | |
945 | ||
946 | static void mlxsw_sp_router_neigh_rec_process(struct mlxsw_sp *mlxsw_sp, | |
947 | char *rauhtd_pl, int rec_index) | |
948 | { | |
949 | switch (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, rec_index)) { | |
950 | case MLXSW_REG_RAUHTD_TYPE_IPV4: | |
951 | mlxsw_sp_router_neigh_rec_ipv4_process(mlxsw_sp, rauhtd_pl, | |
952 | rec_index); | |
953 | break; | |
954 | case MLXSW_REG_RAUHTD_TYPE_IPV6: | |
955 | WARN_ON_ONCE(1); | |
956 | break; | |
957 | } | |
958 | } | |
959 | ||
42cdb338 AS |
960 | static bool mlxsw_sp_router_rauhtd_is_full(char *rauhtd_pl) |
961 | { | |
962 | u8 num_rec, last_rec_index, num_entries; | |
963 | ||
964 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
965 | last_rec_index = num_rec - 1; | |
966 | ||
967 | if (num_rec < MLXSW_REG_RAUHTD_REC_MAX_NUM) | |
968 | return false; | |
969 | if (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, last_rec_index) == | |
970 | MLXSW_REG_RAUHTD_TYPE_IPV6) | |
971 | return true; | |
972 | ||
973 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
974 | last_rec_index); | |
975 | if (++num_entries == MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC) | |
976 | return true; | |
977 | return false; | |
978 | } | |
979 | ||
b2157149 | 980 | static int mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp) |
c723c735 | 981 | { |
c723c735 YG |
982 | char *rauhtd_pl; |
983 | u8 num_rec; | |
984 | int i, err; | |
985 | ||
986 | rauhtd_pl = kmalloc(MLXSW_REG_RAUHTD_LEN, GFP_KERNEL); | |
987 | if (!rauhtd_pl) | |
b2157149 | 988 | return -ENOMEM; |
c723c735 YG |
989 | |
990 | /* Make sure the neighbour's netdev isn't removed in the | |
991 | * process. | |
992 | */ | |
993 | rtnl_lock(); | |
994 | do { | |
995 | mlxsw_reg_rauhtd_pack(rauhtd_pl, MLXSW_REG_RAUHTD_TYPE_IPV4); | |
996 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(rauhtd), | |
997 | rauhtd_pl); | |
998 | if (err) { | |
999 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to dump neighbour talbe\n"); | |
1000 | break; | |
1001 | } | |
1002 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
1003 | for (i = 0; i < num_rec; i++) | |
1004 | mlxsw_sp_router_neigh_rec_process(mlxsw_sp, rauhtd_pl, | |
1005 | i); | |
42cdb338 | 1006 | } while (mlxsw_sp_router_rauhtd_is_full(rauhtd_pl)); |
c723c735 YG |
1007 | rtnl_unlock(); |
1008 | ||
1009 | kfree(rauhtd_pl); | |
b2157149 YG |
1010 | return err; |
1011 | } | |
1012 | ||
1013 | static void mlxsw_sp_router_neighs_update_nh(struct mlxsw_sp *mlxsw_sp) | |
1014 | { | |
1015 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1016 | ||
1017 | /* Take RTNL mutex here to prevent lists from changes */ | |
1018 | rtnl_lock(); | |
9011b677 | 1019 | list_for_each_entry(neigh_entry, &mlxsw_sp->router->nexthop_neighs_list, |
8a0b7275 | 1020 | nexthop_neighs_list_node) |
b2157149 YG |
1021 | /* If this neigh have nexthops, make the kernel think this neigh |
1022 | * is active regardless of the traffic. | |
1023 | */ | |
8a0b7275 | 1024 | neigh_event_send(neigh_entry->key.n, NULL); |
b2157149 YG |
1025 | rtnl_unlock(); |
1026 | } | |
1027 | ||
1028 | static void | |
1029 | mlxsw_sp_router_neighs_update_work_schedule(struct mlxsw_sp *mlxsw_sp) | |
1030 | { | |
9011b677 | 1031 | unsigned long interval = mlxsw_sp->router->neighs_update.interval; |
b2157149 | 1032 | |
9011b677 | 1033 | mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, |
b2157149 YG |
1034 | msecs_to_jiffies(interval)); |
1035 | } | |
1036 | ||
1037 | static void mlxsw_sp_router_neighs_update_work(struct work_struct *work) | |
1038 | { | |
9011b677 | 1039 | struct mlxsw_sp_router *router; |
b2157149 YG |
1040 | int err; |
1041 | ||
9011b677 IS |
1042 | router = container_of(work, struct mlxsw_sp_router, |
1043 | neighs_update.dw.work); | |
1044 | err = mlxsw_sp_router_neighs_update_rauhtd(router->mlxsw_sp); | |
b2157149 | 1045 | if (err) |
9011b677 | 1046 | dev_err(router->mlxsw_sp->bus_info->dev, "Could not update kernel for neigh activity"); |
b2157149 | 1047 | |
9011b677 | 1048 | mlxsw_sp_router_neighs_update_nh(router->mlxsw_sp); |
b2157149 | 1049 | |
9011b677 | 1050 | mlxsw_sp_router_neighs_update_work_schedule(router->mlxsw_sp); |
c723c735 YG |
1051 | } |
1052 | ||
0b2361d9 YG |
1053 | static void mlxsw_sp_router_probe_unresolved_nexthops(struct work_struct *work) |
1054 | { | |
1055 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
9011b677 | 1056 | struct mlxsw_sp_router *router; |
0b2361d9 | 1057 | |
9011b677 IS |
1058 | router = container_of(work, struct mlxsw_sp_router, |
1059 | nexthop_probe_dw.work); | |
0b2361d9 YG |
1060 | /* Iterate over nexthop neighbours, find those who are unresolved and |
1061 | * send arp on them. This solves the chicken-egg problem when | |
1062 | * the nexthop wouldn't get offloaded until the neighbor is resolved | |
1063 | * but it wouldn't get resolved ever in case traffic is flowing in HW | |
1064 | * using different nexthop. | |
1065 | * | |
1066 | * Take RTNL mutex here to prevent lists from changes. | |
1067 | */ | |
1068 | rtnl_lock(); | |
9011b677 | 1069 | list_for_each_entry(neigh_entry, &router->nexthop_neighs_list, |
8a0b7275 | 1070 | nexthop_neighs_list_node) |
01b1aa35 | 1071 | if (!neigh_entry->connected) |
33b1341c | 1072 | neigh_event_send(neigh_entry->key.n, NULL); |
0b2361d9 YG |
1073 | rtnl_unlock(); |
1074 | ||
9011b677 | 1075 | mlxsw_core_schedule_dw(&router->nexthop_probe_dw, |
0b2361d9 YG |
1076 | MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL); |
1077 | } | |
1078 | ||
a7ff87ac JP |
1079 | static void |
1080 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
1081 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1082 | bool removing); | |
1083 | ||
5c8802f1 IS |
1084 | static enum mlxsw_reg_rauht_op mlxsw_sp_rauht_op(bool adding) |
1085 | { | |
1086 | return adding ? MLXSW_REG_RAUHT_OP_WRITE_ADD : | |
1087 | MLXSW_REG_RAUHT_OP_WRITE_DELETE; | |
1088 | } | |
1089 | ||
1090 | static void | |
1091 | mlxsw_sp_router_neigh_entry_op4(struct mlxsw_sp *mlxsw_sp, | |
1092 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1093 | enum mlxsw_reg_rauht_op op) | |
a6bf9e93 | 1094 | { |
33b1341c | 1095 | struct neighbour *n = neigh_entry->key.n; |
5c8802f1 | 1096 | u32 dip = ntohl(*((__be32 *) n->primary_key)); |
a6bf9e93 | 1097 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; |
5c8802f1 IS |
1098 | |
1099 | mlxsw_reg_rauht_pack4(rauht_pl, op, neigh_entry->rif, neigh_entry->ha, | |
1100 | dip); | |
1101 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); | |
1102 | } | |
1103 | ||
1104 | static void | |
1105 | mlxsw_sp_neigh_entry_update(struct mlxsw_sp *mlxsw_sp, | |
1106 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1107 | bool adding) | |
1108 | { | |
1109 | if (!adding && !neigh_entry->connected) | |
1110 | return; | |
1111 | neigh_entry->connected = adding; | |
1112 | if (neigh_entry->key.n->tbl == &arp_tbl) | |
1113 | mlxsw_sp_router_neigh_entry_op4(mlxsw_sp, neigh_entry, | |
1114 | mlxsw_sp_rauht_op(adding)); | |
1115 | else | |
1116 | WARN_ON_ONCE(1); | |
1117 | } | |
1118 | ||
1119 | struct mlxsw_sp_neigh_event_work { | |
1120 | struct work_struct work; | |
1121 | struct mlxsw_sp *mlxsw_sp; | |
1122 | struct neighbour *n; | |
1123 | }; | |
1124 | ||
1125 | static void mlxsw_sp_router_neigh_event_work(struct work_struct *work) | |
1126 | { | |
1127 | struct mlxsw_sp_neigh_event_work *neigh_work = | |
1128 | container_of(work, struct mlxsw_sp_neigh_event_work, work); | |
1129 | struct mlxsw_sp *mlxsw_sp = neigh_work->mlxsw_sp; | |
1130 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1131 | struct neighbour *n = neigh_work->n; | |
1132 | unsigned char ha[ETH_ALEN]; | |
a6bf9e93 | 1133 | bool entry_connected; |
93a87e5e | 1134 | u8 nud_state, dead; |
a6bf9e93 | 1135 | |
5c8802f1 IS |
1136 | /* If these parameters are changed after we release the lock, |
1137 | * then we are guaranteed to receive another event letting us | |
1138 | * know about it. | |
1139 | */ | |
a6bf9e93 | 1140 | read_lock_bh(&n->lock); |
5c8802f1 | 1141 | memcpy(ha, n->ha, ETH_ALEN); |
a6bf9e93 | 1142 | nud_state = n->nud_state; |
93a87e5e | 1143 | dead = n->dead; |
a6bf9e93 YG |
1144 | read_unlock_bh(&n->lock); |
1145 | ||
5c8802f1 | 1146 | rtnl_lock(); |
93a87e5e | 1147 | entry_connected = nud_state & NUD_VALID && !dead; |
5c8802f1 IS |
1148 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); |
1149 | if (!entry_connected && !neigh_entry) | |
1150 | goto out; | |
1151 | if (!neigh_entry) { | |
1152 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); | |
1153 | if (IS_ERR(neigh_entry)) | |
1154 | goto out; | |
a6bf9e93 YG |
1155 | } |
1156 | ||
5c8802f1 IS |
1157 | memcpy(neigh_entry->ha, ha, ETH_ALEN); |
1158 | mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, entry_connected); | |
1159 | mlxsw_sp_nexthop_neigh_update(mlxsw_sp, neigh_entry, !entry_connected); | |
1160 | ||
1161 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) | |
1162 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1163 | ||
1164 | out: | |
1165 | rtnl_unlock(); | |
a6bf9e93 | 1166 | neigh_release(n); |
5c8802f1 | 1167 | kfree(neigh_work); |
a6bf9e93 YG |
1168 | } |
1169 | ||
e7322638 JP |
1170 | int mlxsw_sp_router_netevent_event(struct notifier_block *unused, |
1171 | unsigned long event, void *ptr) | |
c723c735 | 1172 | { |
5c8802f1 | 1173 | struct mlxsw_sp_neigh_event_work *neigh_work; |
c723c735 YG |
1174 | struct mlxsw_sp_port *mlxsw_sp_port; |
1175 | struct mlxsw_sp *mlxsw_sp; | |
1176 | unsigned long interval; | |
1177 | struct neigh_parms *p; | |
a6bf9e93 | 1178 | struct neighbour *n; |
c723c735 YG |
1179 | |
1180 | switch (event) { | |
1181 | case NETEVENT_DELAY_PROBE_TIME_UPDATE: | |
1182 | p = ptr; | |
1183 | ||
1184 | /* We don't care about changes in the default table. */ | |
1185 | if (!p->dev || p->tbl != &arp_tbl) | |
1186 | return NOTIFY_DONE; | |
1187 | ||
1188 | /* We are in atomic context and can't take RTNL mutex, | |
1189 | * so use RCU variant to walk the device chain. | |
1190 | */ | |
1191 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(p->dev); | |
1192 | if (!mlxsw_sp_port) | |
1193 | return NOTIFY_DONE; | |
1194 | ||
1195 | mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
1196 | interval = jiffies_to_msecs(NEIGH_VAR(p, DELAY_PROBE_TIME)); | |
9011b677 | 1197 | mlxsw_sp->router->neighs_update.interval = interval; |
c723c735 YG |
1198 | |
1199 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
1200 | break; | |
a6bf9e93 YG |
1201 | case NETEVENT_NEIGH_UPDATE: |
1202 | n = ptr; | |
a6bf9e93 YG |
1203 | |
1204 | if (n->tbl != &arp_tbl) | |
1205 | return NOTIFY_DONE; | |
1206 | ||
5c8802f1 | 1207 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(n->dev); |
a6bf9e93 YG |
1208 | if (!mlxsw_sp_port) |
1209 | return NOTIFY_DONE; | |
1210 | ||
5c8802f1 IS |
1211 | neigh_work = kzalloc(sizeof(*neigh_work), GFP_ATOMIC); |
1212 | if (!neigh_work) { | |
a6bf9e93 | 1213 | mlxsw_sp_port_dev_put(mlxsw_sp_port); |
5c8802f1 | 1214 | return NOTIFY_BAD; |
a6bf9e93 | 1215 | } |
5c8802f1 IS |
1216 | |
1217 | INIT_WORK(&neigh_work->work, mlxsw_sp_router_neigh_event_work); | |
1218 | neigh_work->mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
1219 | neigh_work->n = n; | |
a6bf9e93 YG |
1220 | |
1221 | /* Take a reference to ensure the neighbour won't be | |
1222 | * destructed until we drop the reference in delayed | |
1223 | * work. | |
1224 | */ | |
1225 | neigh_clone(n); | |
5c8802f1 IS |
1226 | mlxsw_core_schedule_work(&neigh_work->work); |
1227 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
a6bf9e93 | 1228 | break; |
c723c735 YG |
1229 | } |
1230 | ||
1231 | return NOTIFY_DONE; | |
1232 | } | |
1233 | ||
6cf3c971 JP |
1234 | static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp) |
1235 | { | |
c723c735 YG |
1236 | int err; |
1237 | ||
9011b677 | 1238 | err = rhashtable_init(&mlxsw_sp->router->neigh_ht, |
c723c735 YG |
1239 | &mlxsw_sp_neigh_ht_params); |
1240 | if (err) | |
1241 | return err; | |
1242 | ||
1243 | /* Initialize the polling interval according to the default | |
1244 | * table. | |
1245 | */ | |
1246 | mlxsw_sp_router_neighs_update_interval_init(mlxsw_sp); | |
1247 | ||
0b2361d9 | 1248 | /* Create the delayed works for the activity_update */ |
9011b677 | 1249 | INIT_DELAYED_WORK(&mlxsw_sp->router->neighs_update.dw, |
c723c735 | 1250 | mlxsw_sp_router_neighs_update_work); |
9011b677 | 1251 | INIT_DELAYED_WORK(&mlxsw_sp->router->nexthop_probe_dw, |
0b2361d9 | 1252 | mlxsw_sp_router_probe_unresolved_nexthops); |
9011b677 IS |
1253 | mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, 0); |
1254 | mlxsw_core_schedule_dw(&mlxsw_sp->router->nexthop_probe_dw, 0); | |
c723c735 | 1255 | return 0; |
6cf3c971 JP |
1256 | } |
1257 | ||
1258 | static void mlxsw_sp_neigh_fini(struct mlxsw_sp *mlxsw_sp) | |
1259 | { | |
9011b677 IS |
1260 | cancel_delayed_work_sync(&mlxsw_sp->router->neighs_update.dw); |
1261 | cancel_delayed_work_sync(&mlxsw_sp->router->nexthop_probe_dw); | |
1262 | rhashtable_destroy(&mlxsw_sp->router->neigh_ht); | |
6cf3c971 JP |
1263 | } |
1264 | ||
9665b745 | 1265 | static int mlxsw_sp_neigh_rif_flush(struct mlxsw_sp *mlxsw_sp, |
bf95233e | 1266 | const struct mlxsw_sp_rif *rif) |
9665b745 IS |
1267 | { |
1268 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; | |
1269 | ||
1270 | mlxsw_reg_rauht_pack(rauht_pl, MLXSW_REG_RAUHT_OP_WRITE_DELETE_ALL, | |
bf95233e | 1271 | rif->rif_index, rif->addr); |
9665b745 IS |
1272 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); |
1273 | } | |
1274 | ||
1275 | static void mlxsw_sp_neigh_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
bf95233e | 1276 | struct mlxsw_sp_rif *rif) |
9665b745 IS |
1277 | { |
1278 | struct mlxsw_sp_neigh_entry *neigh_entry, *tmp; | |
1279 | ||
bf95233e AS |
1280 | mlxsw_sp_neigh_rif_flush(mlxsw_sp, rif); |
1281 | list_for_each_entry_safe(neigh_entry, tmp, &rif->neigh_list, | |
9665b745 IS |
1282 | rif_list_node) |
1283 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1284 | } | |
1285 | ||
c53b8e1b IS |
1286 | struct mlxsw_sp_nexthop_key { |
1287 | struct fib_nh *fib_nh; | |
1288 | }; | |
1289 | ||
a7ff87ac JP |
1290 | struct mlxsw_sp_nexthop { |
1291 | struct list_head neigh_list_node; /* member of neigh entry list */ | |
9665b745 | 1292 | struct list_head rif_list_node; |
a7ff87ac JP |
1293 | struct mlxsw_sp_nexthop_group *nh_grp; /* pointer back to the group |
1294 | * this belongs to | |
1295 | */ | |
c53b8e1b IS |
1296 | struct rhash_head ht_node; |
1297 | struct mlxsw_sp_nexthop_key key; | |
bf95233e | 1298 | struct mlxsw_sp_rif *rif; |
a7ff87ac JP |
1299 | u8 should_offload:1, /* set indicates this neigh is connected and |
1300 | * should be put to KVD linear area of this group. | |
1301 | */ | |
1302 | offloaded:1, /* set in case the neigh is actually put into | |
1303 | * KVD linear area of this group. | |
1304 | */ | |
1305 | update:1; /* set indicates that MAC of this neigh should be | |
1306 | * updated in HW | |
1307 | */ | |
1308 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1309 | }; | |
1310 | ||
e9ad5e7d IS |
1311 | struct mlxsw_sp_nexthop_group_key { |
1312 | struct fib_info *fi; | |
1313 | }; | |
1314 | ||
a7ff87ac | 1315 | struct mlxsw_sp_nexthop_group { |
e9ad5e7d | 1316 | struct rhash_head ht_node; |
a7ff87ac | 1317 | struct list_head fib_list; /* list of fib entries that use this group */ |
e9ad5e7d | 1318 | struct mlxsw_sp_nexthop_group_key key; |
b3e8d1eb IS |
1319 | u8 adj_index_valid:1, |
1320 | gateway:1; /* routes using the group use a gateway */ | |
a7ff87ac JP |
1321 | u32 adj_index; |
1322 | u16 ecmp_size; | |
1323 | u16 count; | |
1324 | struct mlxsw_sp_nexthop nexthops[0]; | |
bf95233e | 1325 | #define nh_rif nexthops[0].rif |
a7ff87ac JP |
1326 | }; |
1327 | ||
e9ad5e7d IS |
1328 | static const struct rhashtable_params mlxsw_sp_nexthop_group_ht_params = { |
1329 | .key_offset = offsetof(struct mlxsw_sp_nexthop_group, key), | |
1330 | .head_offset = offsetof(struct mlxsw_sp_nexthop_group, ht_node), | |
1331 | .key_len = sizeof(struct mlxsw_sp_nexthop_group_key), | |
1332 | }; | |
1333 | ||
1334 | static int mlxsw_sp_nexthop_group_insert(struct mlxsw_sp *mlxsw_sp, | |
1335 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1336 | { | |
9011b677 | 1337 | return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
1338 | &nh_grp->ht_node, |
1339 | mlxsw_sp_nexthop_group_ht_params); | |
1340 | } | |
1341 | ||
1342 | static void mlxsw_sp_nexthop_group_remove(struct mlxsw_sp *mlxsw_sp, | |
1343 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1344 | { | |
9011b677 | 1345 | rhashtable_remove_fast(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
1346 | &nh_grp->ht_node, |
1347 | mlxsw_sp_nexthop_group_ht_params); | |
1348 | } | |
1349 | ||
1350 | static struct mlxsw_sp_nexthop_group * | |
1351 | mlxsw_sp_nexthop_group_lookup(struct mlxsw_sp *mlxsw_sp, | |
1352 | struct mlxsw_sp_nexthop_group_key key) | |
1353 | { | |
9011b677 | 1354 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, &key, |
e9ad5e7d IS |
1355 | mlxsw_sp_nexthop_group_ht_params); |
1356 | } | |
1357 | ||
c53b8e1b IS |
1358 | static const struct rhashtable_params mlxsw_sp_nexthop_ht_params = { |
1359 | .key_offset = offsetof(struct mlxsw_sp_nexthop, key), | |
1360 | .head_offset = offsetof(struct mlxsw_sp_nexthop, ht_node), | |
1361 | .key_len = sizeof(struct mlxsw_sp_nexthop_key), | |
1362 | }; | |
1363 | ||
1364 | static int mlxsw_sp_nexthop_insert(struct mlxsw_sp *mlxsw_sp, | |
1365 | struct mlxsw_sp_nexthop *nh) | |
1366 | { | |
9011b677 | 1367 | return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_ht, |
c53b8e1b IS |
1368 | &nh->ht_node, mlxsw_sp_nexthop_ht_params); |
1369 | } | |
1370 | ||
1371 | static void mlxsw_sp_nexthop_remove(struct mlxsw_sp *mlxsw_sp, | |
1372 | struct mlxsw_sp_nexthop *nh) | |
1373 | { | |
9011b677 | 1374 | rhashtable_remove_fast(&mlxsw_sp->router->nexthop_ht, &nh->ht_node, |
c53b8e1b IS |
1375 | mlxsw_sp_nexthop_ht_params); |
1376 | } | |
1377 | ||
ad178c8e IS |
1378 | static struct mlxsw_sp_nexthop * |
1379 | mlxsw_sp_nexthop_lookup(struct mlxsw_sp *mlxsw_sp, | |
1380 | struct mlxsw_sp_nexthop_key key) | |
1381 | { | |
9011b677 | 1382 | return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_ht, &key, |
ad178c8e IS |
1383 | mlxsw_sp_nexthop_ht_params); |
1384 | } | |
1385 | ||
a7ff87ac | 1386 | static int mlxsw_sp_adj_index_mass_update_vr(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 1387 | const struct mlxsw_sp_fib *fib, |
a7ff87ac JP |
1388 | u32 adj_index, u16 ecmp_size, |
1389 | u32 new_adj_index, | |
1390 | u16 new_ecmp_size) | |
1391 | { | |
1392 | char raleu_pl[MLXSW_REG_RALEU_LEN]; | |
1393 | ||
1a9234e6 | 1394 | mlxsw_reg_raleu_pack(raleu_pl, |
76610ebb IS |
1395 | (enum mlxsw_reg_ralxx_protocol) fib->proto, |
1396 | fib->vr->id, adj_index, ecmp_size, new_adj_index, | |
1a9234e6 | 1397 | new_ecmp_size); |
a7ff87ac JP |
1398 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raleu), raleu_pl); |
1399 | } | |
1400 | ||
1401 | static int mlxsw_sp_adj_index_mass_update(struct mlxsw_sp *mlxsw_sp, | |
1402 | struct mlxsw_sp_nexthop_group *nh_grp, | |
1403 | u32 old_adj_index, u16 old_ecmp_size) | |
1404 | { | |
1405 | struct mlxsw_sp_fib_entry *fib_entry; | |
76610ebb | 1406 | struct mlxsw_sp_fib *fib = NULL; |
a7ff87ac JP |
1407 | int err; |
1408 | ||
1409 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
76610ebb | 1410 | if (fib == fib_entry->fib_node->fib) |
a7ff87ac | 1411 | continue; |
76610ebb IS |
1412 | fib = fib_entry->fib_node->fib; |
1413 | err = mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, fib, | |
a7ff87ac JP |
1414 | old_adj_index, |
1415 | old_ecmp_size, | |
1416 | nh_grp->adj_index, | |
1417 | nh_grp->ecmp_size); | |
1418 | if (err) | |
1419 | return err; | |
1420 | } | |
1421 | return 0; | |
1422 | } | |
1423 | ||
1424 | static int mlxsw_sp_nexthop_mac_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, | |
1425 | struct mlxsw_sp_nexthop *nh) | |
1426 | { | |
1427 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
1428 | char ratr_pl[MLXSW_REG_RATR_LEN]; | |
1429 | ||
1430 | mlxsw_reg_ratr_pack(ratr_pl, MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY, | |
1431 | true, adj_index, neigh_entry->rif); | |
1432 | mlxsw_reg_ratr_eth_entry_pack(ratr_pl, neigh_entry->ha); | |
1433 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl); | |
1434 | } | |
1435 | ||
1436 | static int | |
1437 | mlxsw_sp_nexthop_group_mac_update(struct mlxsw_sp *mlxsw_sp, | |
a59b7e02 IS |
1438 | struct mlxsw_sp_nexthop_group *nh_grp, |
1439 | bool reallocate) | |
a7ff87ac JP |
1440 | { |
1441 | u32 adj_index = nh_grp->adj_index; /* base */ | |
1442 | struct mlxsw_sp_nexthop *nh; | |
1443 | int i; | |
1444 | int err; | |
1445 | ||
1446 | for (i = 0; i < nh_grp->count; i++) { | |
1447 | nh = &nh_grp->nexthops[i]; | |
1448 | ||
1449 | if (!nh->should_offload) { | |
1450 | nh->offloaded = 0; | |
1451 | continue; | |
1452 | } | |
1453 | ||
a59b7e02 | 1454 | if (nh->update || reallocate) { |
a7ff87ac JP |
1455 | err = mlxsw_sp_nexthop_mac_update(mlxsw_sp, |
1456 | adj_index, nh); | |
1457 | if (err) | |
1458 | return err; | |
1459 | nh->update = 0; | |
1460 | nh->offloaded = 1; | |
1461 | } | |
1462 | adj_index++; | |
1463 | } | |
1464 | return 0; | |
1465 | } | |
1466 | ||
1467 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
1468 | struct mlxsw_sp_fib_entry *fib_entry); | |
1469 | ||
1470 | static int | |
1471 | mlxsw_sp_nexthop_fib_entries_update(struct mlxsw_sp *mlxsw_sp, | |
1472 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1473 | { | |
1474 | struct mlxsw_sp_fib_entry *fib_entry; | |
1475 | int err; | |
1476 | ||
1477 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
1478 | err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
1479 | if (err) | |
1480 | return err; | |
1481 | } | |
1482 | return 0; | |
1483 | } | |
1484 | ||
1485 | static void | |
1486 | mlxsw_sp_nexthop_group_refresh(struct mlxsw_sp *mlxsw_sp, | |
1487 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1488 | { | |
1489 | struct mlxsw_sp_nexthop *nh; | |
1490 | bool offload_change = false; | |
1491 | u32 adj_index; | |
1492 | u16 ecmp_size = 0; | |
1493 | bool old_adj_index_valid; | |
1494 | u32 old_adj_index; | |
1495 | u16 old_ecmp_size; | |
a7ff87ac JP |
1496 | int i; |
1497 | int err; | |
1498 | ||
b3e8d1eb IS |
1499 | if (!nh_grp->gateway) { |
1500 | mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1501 | return; | |
1502 | } | |
1503 | ||
a7ff87ac JP |
1504 | for (i = 0; i < nh_grp->count; i++) { |
1505 | nh = &nh_grp->nexthops[i]; | |
1506 | ||
1507 | if (nh->should_offload ^ nh->offloaded) { | |
1508 | offload_change = true; | |
1509 | if (nh->should_offload) | |
1510 | nh->update = 1; | |
1511 | } | |
1512 | if (nh->should_offload) | |
1513 | ecmp_size++; | |
1514 | } | |
1515 | if (!offload_change) { | |
1516 | /* Nothing was added or removed, so no need to reallocate. Just | |
1517 | * update MAC on existing adjacency indexes. | |
1518 | */ | |
a59b7e02 IS |
1519 | err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, |
1520 | false); | |
a7ff87ac JP |
1521 | if (err) { |
1522 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
1523 | goto set_trap; | |
1524 | } | |
1525 | return; | |
1526 | } | |
1527 | if (!ecmp_size) | |
1528 | /* No neigh of this group is connected so we just set | |
1529 | * the trap and let everthing flow through kernel. | |
1530 | */ | |
1531 | goto set_trap; | |
1532 | ||
13124443 AS |
1533 | err = mlxsw_sp_kvdl_alloc(mlxsw_sp, ecmp_size, &adj_index); |
1534 | if (err) { | |
a7ff87ac JP |
1535 | /* We ran out of KVD linear space, just set the |
1536 | * trap and let everything flow through kernel. | |
1537 | */ | |
1538 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to allocate KVD linear area for nexthop group.\n"); | |
1539 | goto set_trap; | |
1540 | } | |
a7ff87ac JP |
1541 | old_adj_index_valid = nh_grp->adj_index_valid; |
1542 | old_adj_index = nh_grp->adj_index; | |
1543 | old_ecmp_size = nh_grp->ecmp_size; | |
1544 | nh_grp->adj_index_valid = 1; | |
1545 | nh_grp->adj_index = adj_index; | |
1546 | nh_grp->ecmp_size = ecmp_size; | |
a59b7e02 | 1547 | err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, true); |
a7ff87ac JP |
1548 | if (err) { |
1549 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
1550 | goto set_trap; | |
1551 | } | |
1552 | ||
1553 | if (!old_adj_index_valid) { | |
1554 | /* The trap was set for fib entries, so we have to call | |
1555 | * fib entry update to unset it and use adjacency index. | |
1556 | */ | |
1557 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1558 | if (err) { | |
1559 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to add adjacency index to fib entries.\n"); | |
1560 | goto set_trap; | |
1561 | } | |
1562 | return; | |
1563 | } | |
1564 | ||
1565 | err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, nh_grp, | |
1566 | old_adj_index, old_ecmp_size); | |
1567 | mlxsw_sp_kvdl_free(mlxsw_sp, old_adj_index); | |
1568 | if (err) { | |
1569 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to mass-update adjacency index for nexthop group.\n"); | |
1570 | goto set_trap; | |
1571 | } | |
1572 | return; | |
1573 | ||
1574 | set_trap: | |
1575 | old_adj_index_valid = nh_grp->adj_index_valid; | |
1576 | nh_grp->adj_index_valid = 0; | |
1577 | for (i = 0; i < nh_grp->count; i++) { | |
1578 | nh = &nh_grp->nexthops[i]; | |
1579 | nh->offloaded = 0; | |
1580 | } | |
1581 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1582 | if (err) | |
1583 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set traps for fib entries.\n"); | |
1584 | if (old_adj_index_valid) | |
1585 | mlxsw_sp_kvdl_free(mlxsw_sp, nh_grp->adj_index); | |
1586 | } | |
1587 | ||
1588 | static void __mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp_nexthop *nh, | |
1589 | bool removing) | |
1590 | { | |
1591 | if (!removing && !nh->should_offload) | |
1592 | nh->should_offload = 1; | |
1593 | else if (removing && nh->offloaded) | |
1594 | nh->should_offload = 0; | |
1595 | nh->update = 1; | |
1596 | } | |
1597 | ||
1598 | static void | |
1599 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
1600 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1601 | bool removing) | |
1602 | { | |
1603 | struct mlxsw_sp_nexthop *nh; | |
1604 | ||
a7ff87ac JP |
1605 | list_for_each_entry(nh, &neigh_entry->nexthop_list, |
1606 | neigh_list_node) { | |
1607 | __mlxsw_sp_nexthop_neigh_update(nh, removing); | |
1608 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1609 | } | |
a7ff87ac JP |
1610 | } |
1611 | ||
9665b745 | 1612 | static void mlxsw_sp_nexthop_rif_init(struct mlxsw_sp_nexthop *nh, |
bf95233e | 1613 | struct mlxsw_sp_rif *rif) |
9665b745 | 1614 | { |
bf95233e | 1615 | if (nh->rif) |
9665b745 IS |
1616 | return; |
1617 | ||
bf95233e AS |
1618 | nh->rif = rif; |
1619 | list_add(&nh->rif_list_node, &rif->nexthop_list); | |
9665b745 IS |
1620 | } |
1621 | ||
1622 | static void mlxsw_sp_nexthop_rif_fini(struct mlxsw_sp_nexthop *nh) | |
1623 | { | |
bf95233e | 1624 | if (!nh->rif) |
9665b745 IS |
1625 | return; |
1626 | ||
1627 | list_del(&nh->rif_list_node); | |
bf95233e | 1628 | nh->rif = NULL; |
9665b745 IS |
1629 | } |
1630 | ||
a8c97014 IS |
1631 | static int mlxsw_sp_nexthop_neigh_init(struct mlxsw_sp *mlxsw_sp, |
1632 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
1633 | { |
1634 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
a8c97014 | 1635 | struct fib_nh *fib_nh = nh->key.fib_nh; |
a7ff87ac | 1636 | struct neighbour *n; |
93a87e5e | 1637 | u8 nud_state, dead; |
c53b8e1b IS |
1638 | int err; |
1639 | ||
ad178c8e | 1640 | if (!nh->nh_grp->gateway || nh->neigh_entry) |
b8399a1e IS |
1641 | return 0; |
1642 | ||
33b1341c JP |
1643 | /* Take a reference of neigh here ensuring that neigh would |
1644 | * not be detructed before the nexthop entry is finished. | |
1645 | * The reference is taken either in neigh_lookup() or | |
fd76d910 | 1646 | * in neigh_create() in case n is not found. |
33b1341c | 1647 | */ |
a8c97014 | 1648 | n = neigh_lookup(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev); |
33b1341c | 1649 | if (!n) { |
a8c97014 IS |
1650 | n = neigh_create(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev); |
1651 | if (IS_ERR(n)) | |
1652 | return PTR_ERR(n); | |
a7ff87ac | 1653 | neigh_event_send(n, NULL); |
33b1341c JP |
1654 | } |
1655 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); | |
1656 | if (!neigh_entry) { | |
5c8802f1 IS |
1657 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); |
1658 | if (IS_ERR(neigh_entry)) { | |
c53b8e1b IS |
1659 | err = -EINVAL; |
1660 | goto err_neigh_entry_create; | |
5c8802f1 | 1661 | } |
a7ff87ac | 1662 | } |
b2157149 YG |
1663 | |
1664 | /* If that is the first nexthop connected to that neigh, add to | |
1665 | * nexthop_neighs_list | |
1666 | */ | |
1667 | if (list_empty(&neigh_entry->nexthop_list)) | |
1668 | list_add_tail(&neigh_entry->nexthop_neighs_list_node, | |
9011b677 | 1669 | &mlxsw_sp->router->nexthop_neighs_list); |
b2157149 | 1670 | |
a7ff87ac JP |
1671 | nh->neigh_entry = neigh_entry; |
1672 | list_add_tail(&nh->neigh_list_node, &neigh_entry->nexthop_list); | |
1673 | read_lock_bh(&n->lock); | |
1674 | nud_state = n->nud_state; | |
93a87e5e | 1675 | dead = n->dead; |
a7ff87ac | 1676 | read_unlock_bh(&n->lock); |
93a87e5e | 1677 | __mlxsw_sp_nexthop_neigh_update(nh, !(nud_state & NUD_VALID && !dead)); |
a7ff87ac JP |
1678 | |
1679 | return 0; | |
c53b8e1b IS |
1680 | |
1681 | err_neigh_entry_create: | |
1682 | neigh_release(n); | |
c53b8e1b | 1683 | return err; |
a7ff87ac JP |
1684 | } |
1685 | ||
a8c97014 IS |
1686 | static void mlxsw_sp_nexthop_neigh_fini(struct mlxsw_sp *mlxsw_sp, |
1687 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
1688 | { |
1689 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
a8c97014 | 1690 | struct neighbour *n; |
a7ff87ac | 1691 | |
b8399a1e | 1692 | if (!neigh_entry) |
a8c97014 IS |
1693 | return; |
1694 | n = neigh_entry->key.n; | |
b8399a1e | 1695 | |
58312125 | 1696 | __mlxsw_sp_nexthop_neigh_update(nh, true); |
a7ff87ac | 1697 | list_del(&nh->neigh_list_node); |
e58be79e | 1698 | nh->neigh_entry = NULL; |
b2157149 YG |
1699 | |
1700 | /* If that is the last nexthop connected to that neigh, remove from | |
1701 | * nexthop_neighs_list | |
1702 | */ | |
e58be79e IS |
1703 | if (list_empty(&neigh_entry->nexthop_list)) |
1704 | list_del(&neigh_entry->nexthop_neighs_list_node); | |
b2157149 | 1705 | |
5c8802f1 IS |
1706 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) |
1707 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1708 | ||
1709 | neigh_release(n); | |
a8c97014 | 1710 | } |
c53b8e1b | 1711 | |
a8c97014 IS |
1712 | static int mlxsw_sp_nexthop_init(struct mlxsw_sp *mlxsw_sp, |
1713 | struct mlxsw_sp_nexthop_group *nh_grp, | |
1714 | struct mlxsw_sp_nexthop *nh, | |
1715 | struct fib_nh *fib_nh) | |
1716 | { | |
1717 | struct net_device *dev = fib_nh->nh_dev; | |
df6dd79b | 1718 | struct in_device *in_dev; |
bf95233e | 1719 | struct mlxsw_sp_rif *rif; |
a8c97014 IS |
1720 | int err; |
1721 | ||
1722 | nh->nh_grp = nh_grp; | |
1723 | nh->key.fib_nh = fib_nh; | |
1724 | err = mlxsw_sp_nexthop_insert(mlxsw_sp, nh); | |
1725 | if (err) | |
1726 | return err; | |
1727 | ||
97989ee0 IS |
1728 | if (!dev) |
1729 | return 0; | |
1730 | ||
df6dd79b IS |
1731 | in_dev = __in_dev_get_rtnl(dev); |
1732 | if (in_dev && IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) && | |
1733 | fib_nh->nh_flags & RTNH_F_LINKDOWN) | |
1734 | return 0; | |
1735 | ||
bf95233e AS |
1736 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
1737 | if (!rif) | |
a8c97014 | 1738 | return 0; |
bf95233e | 1739 | mlxsw_sp_nexthop_rif_init(nh, rif); |
a8c97014 IS |
1740 | |
1741 | err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); | |
1742 | if (err) | |
1743 | goto err_nexthop_neigh_init; | |
1744 | ||
1745 | return 0; | |
1746 | ||
1747 | err_nexthop_neigh_init: | |
1748 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); | |
1749 | return err; | |
1750 | } | |
1751 | ||
1752 | static void mlxsw_sp_nexthop_fini(struct mlxsw_sp *mlxsw_sp, | |
1753 | struct mlxsw_sp_nexthop *nh) | |
1754 | { | |
1755 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
9665b745 | 1756 | mlxsw_sp_nexthop_rif_fini(nh); |
c53b8e1b | 1757 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); |
a7ff87ac JP |
1758 | } |
1759 | ||
ad178c8e IS |
1760 | static void mlxsw_sp_nexthop_event(struct mlxsw_sp *mlxsw_sp, |
1761 | unsigned long event, struct fib_nh *fib_nh) | |
1762 | { | |
1763 | struct mlxsw_sp_nexthop_key key; | |
1764 | struct mlxsw_sp_nexthop *nh; | |
bf95233e | 1765 | struct mlxsw_sp_rif *rif; |
ad178c8e | 1766 | |
9011b677 | 1767 | if (mlxsw_sp->router->aborted) |
ad178c8e IS |
1768 | return; |
1769 | ||
1770 | key.fib_nh = fib_nh; | |
1771 | nh = mlxsw_sp_nexthop_lookup(mlxsw_sp, key); | |
1772 | if (WARN_ON_ONCE(!nh)) | |
1773 | return; | |
1774 | ||
bf95233e AS |
1775 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, fib_nh->nh_dev); |
1776 | if (!rif) | |
ad178c8e IS |
1777 | return; |
1778 | ||
1779 | switch (event) { | |
1780 | case FIB_EVENT_NH_ADD: | |
bf95233e | 1781 | mlxsw_sp_nexthop_rif_init(nh, rif); |
ad178c8e IS |
1782 | mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); |
1783 | break; | |
1784 | case FIB_EVENT_NH_DEL: | |
1785 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
9665b745 | 1786 | mlxsw_sp_nexthop_rif_fini(nh); |
ad178c8e IS |
1787 | break; |
1788 | } | |
1789 | ||
1790 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1791 | } | |
1792 | ||
9665b745 | 1793 | static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, |
bf95233e | 1794 | struct mlxsw_sp_rif *rif) |
9665b745 IS |
1795 | { |
1796 | struct mlxsw_sp_nexthop *nh, *tmp; | |
1797 | ||
bf95233e | 1798 | list_for_each_entry_safe(nh, tmp, &rif->nexthop_list, rif_list_node) { |
9665b745 IS |
1799 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); |
1800 | mlxsw_sp_nexthop_rif_fini(nh); | |
1801 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1802 | } | |
1803 | } | |
1804 | ||
a7ff87ac JP |
1805 | static struct mlxsw_sp_nexthop_group * |
1806 | mlxsw_sp_nexthop_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi) | |
1807 | { | |
1808 | struct mlxsw_sp_nexthop_group *nh_grp; | |
1809 | struct mlxsw_sp_nexthop *nh; | |
1810 | struct fib_nh *fib_nh; | |
1811 | size_t alloc_size; | |
1812 | int i; | |
1813 | int err; | |
1814 | ||
1815 | alloc_size = sizeof(*nh_grp) + | |
1816 | fi->fib_nhs * sizeof(struct mlxsw_sp_nexthop); | |
1817 | nh_grp = kzalloc(alloc_size, GFP_KERNEL); | |
1818 | if (!nh_grp) | |
1819 | return ERR_PTR(-ENOMEM); | |
1820 | INIT_LIST_HEAD(&nh_grp->fib_list); | |
b3e8d1eb | 1821 | nh_grp->gateway = fi->fib_nh->nh_scope == RT_SCOPE_LINK; |
a7ff87ac | 1822 | nh_grp->count = fi->fib_nhs; |
e9ad5e7d | 1823 | nh_grp->key.fi = fi; |
a7ff87ac JP |
1824 | for (i = 0; i < nh_grp->count; i++) { |
1825 | nh = &nh_grp->nexthops[i]; | |
1826 | fib_nh = &fi->fib_nh[i]; | |
1827 | err = mlxsw_sp_nexthop_init(mlxsw_sp, nh_grp, nh, fib_nh); | |
1828 | if (err) | |
1829 | goto err_nexthop_init; | |
1830 | } | |
e9ad5e7d IS |
1831 | err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); |
1832 | if (err) | |
1833 | goto err_nexthop_group_insert; | |
a7ff87ac JP |
1834 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
1835 | return nh_grp; | |
1836 | ||
e9ad5e7d | 1837 | err_nexthop_group_insert: |
a7ff87ac | 1838 | err_nexthop_init: |
df6dd79b IS |
1839 | for (i--; i >= 0; i--) { |
1840 | nh = &nh_grp->nexthops[i]; | |
a7ff87ac | 1841 | mlxsw_sp_nexthop_fini(mlxsw_sp, nh); |
df6dd79b | 1842 | } |
a7ff87ac JP |
1843 | kfree(nh_grp); |
1844 | return ERR_PTR(err); | |
1845 | } | |
1846 | ||
1847 | static void | |
1848 | mlxsw_sp_nexthop_group_destroy(struct mlxsw_sp *mlxsw_sp, | |
1849 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1850 | { | |
1851 | struct mlxsw_sp_nexthop *nh; | |
1852 | int i; | |
1853 | ||
e9ad5e7d | 1854 | mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); |
a7ff87ac JP |
1855 | for (i = 0; i < nh_grp->count; i++) { |
1856 | nh = &nh_grp->nexthops[i]; | |
1857 | mlxsw_sp_nexthop_fini(mlxsw_sp, nh); | |
1858 | } | |
58312125 IS |
1859 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
1860 | WARN_ON_ONCE(nh_grp->adj_index_valid); | |
a7ff87ac JP |
1861 | kfree(nh_grp); |
1862 | } | |
1863 | ||
a7ff87ac JP |
1864 | static int mlxsw_sp_nexthop_group_get(struct mlxsw_sp *mlxsw_sp, |
1865 | struct mlxsw_sp_fib_entry *fib_entry, | |
1866 | struct fib_info *fi) | |
1867 | { | |
e9ad5e7d | 1868 | struct mlxsw_sp_nexthop_group_key key; |
a7ff87ac JP |
1869 | struct mlxsw_sp_nexthop_group *nh_grp; |
1870 | ||
e9ad5e7d IS |
1871 | key.fi = fi; |
1872 | nh_grp = mlxsw_sp_nexthop_group_lookup(mlxsw_sp, key); | |
a7ff87ac JP |
1873 | if (!nh_grp) { |
1874 | nh_grp = mlxsw_sp_nexthop_group_create(mlxsw_sp, fi); | |
1875 | if (IS_ERR(nh_grp)) | |
1876 | return PTR_ERR(nh_grp); | |
1877 | } | |
1878 | list_add_tail(&fib_entry->nexthop_group_node, &nh_grp->fib_list); | |
1879 | fib_entry->nh_group = nh_grp; | |
1880 | return 0; | |
1881 | } | |
1882 | ||
1883 | static void mlxsw_sp_nexthop_group_put(struct mlxsw_sp *mlxsw_sp, | |
1884 | struct mlxsw_sp_fib_entry *fib_entry) | |
1885 | { | |
1886 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
1887 | ||
1888 | list_del(&fib_entry->nexthop_group_node); | |
1889 | if (!list_empty(&nh_grp->fib_list)) | |
1890 | return; | |
1891 | mlxsw_sp_nexthop_group_destroy(mlxsw_sp, nh_grp); | |
1892 | } | |
1893 | ||
013b20f9 IS |
1894 | static bool |
1895 | mlxsw_sp_fib_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) | |
1896 | { | |
1897 | struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group; | |
1898 | ||
9aecce1c IS |
1899 | if (fib_entry->params.tos) |
1900 | return false; | |
1901 | ||
013b20f9 IS |
1902 | switch (fib_entry->type) { |
1903 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
1904 | return !!nh_group->adj_index_valid; | |
1905 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: | |
70ad3506 | 1906 | return !!nh_group->nh_rif; |
013b20f9 IS |
1907 | default: |
1908 | return false; | |
1909 | } | |
1910 | } | |
1911 | ||
1912 | static void mlxsw_sp_fib_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) | |
1913 | { | |
1914 | fib_entry->offloaded = true; | |
1915 | ||
76610ebb | 1916 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 IS |
1917 | case MLXSW_SP_L3_PROTO_IPV4: |
1918 | fib_info_offload_inc(fib_entry->nh_group->key.fi); | |
1919 | break; | |
1920 | case MLXSW_SP_L3_PROTO_IPV6: | |
1921 | WARN_ON_ONCE(1); | |
1922 | } | |
1923 | } | |
1924 | ||
1925 | static void | |
1926 | mlxsw_sp_fib_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
1927 | { | |
76610ebb | 1928 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 IS |
1929 | case MLXSW_SP_L3_PROTO_IPV4: |
1930 | fib_info_offload_dec(fib_entry->nh_group->key.fi); | |
1931 | break; | |
1932 | case MLXSW_SP_L3_PROTO_IPV6: | |
1933 | WARN_ON_ONCE(1); | |
1934 | } | |
1935 | ||
1936 | fib_entry->offloaded = false; | |
1937 | } | |
1938 | ||
1939 | static void | |
1940 | mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry, | |
1941 | enum mlxsw_reg_ralue_op op, int err) | |
1942 | { | |
1943 | switch (op) { | |
1944 | case MLXSW_REG_RALUE_OP_WRITE_DELETE: | |
1945 | if (!fib_entry->offloaded) | |
1946 | return; | |
1947 | return mlxsw_sp_fib_entry_offload_unset(fib_entry); | |
1948 | case MLXSW_REG_RALUE_OP_WRITE_WRITE: | |
1949 | if (err) | |
1950 | return; | |
1951 | if (mlxsw_sp_fib_entry_should_offload(fib_entry) && | |
1952 | !fib_entry->offloaded) | |
1953 | mlxsw_sp_fib_entry_offload_set(fib_entry); | |
1954 | else if (!mlxsw_sp_fib_entry_should_offload(fib_entry) && | |
1955 | fib_entry->offloaded) | |
1956 | mlxsw_sp_fib_entry_offload_unset(fib_entry); | |
1957 | return; | |
1958 | default: | |
1959 | return; | |
1960 | } | |
1961 | } | |
1962 | ||
a7ff87ac JP |
1963 | static int mlxsw_sp_fib_entry_op4_remote(struct mlxsw_sp *mlxsw_sp, |
1964 | struct mlxsw_sp_fib_entry *fib_entry, | |
1965 | enum mlxsw_reg_ralue_op op) | |
1966 | { | |
1967 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
76610ebb | 1968 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
9aecce1c | 1969 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
a7ff87ac JP |
1970 | enum mlxsw_reg_ralue_trap_action trap_action; |
1971 | u16 trap_id = 0; | |
1972 | u32 adjacency_index = 0; | |
1973 | u16 ecmp_size = 0; | |
1974 | ||
1975 | /* In case the nexthop group adjacency index is valid, use it | |
1976 | * with provided ECMP size. Otherwise, setup trap and pass | |
1977 | * traffic to kernel. | |
1978 | */ | |
4b411477 | 1979 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { |
a7ff87ac JP |
1980 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; |
1981 | adjacency_index = fib_entry->nh_group->adj_index; | |
1982 | ecmp_size = fib_entry->nh_group->ecmp_size; | |
1983 | } else { | |
1984 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
1985 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
1986 | } | |
1987 | ||
1a9234e6 | 1988 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
1989 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
1990 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 1991 | *p_dip); |
a7ff87ac JP |
1992 | mlxsw_reg_ralue_act_remote_pack(ralue_pl, trap_action, trap_id, |
1993 | adjacency_index, ecmp_size); | |
1994 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
1995 | } | |
1996 | ||
61c503f9 JP |
1997 | static int mlxsw_sp_fib_entry_op4_local(struct mlxsw_sp *mlxsw_sp, |
1998 | struct mlxsw_sp_fib_entry *fib_entry, | |
1999 | enum mlxsw_reg_ralue_op op) | |
2000 | { | |
bf95233e | 2001 | struct mlxsw_sp_rif *rif = fib_entry->nh_group->nh_rif; |
76610ebb | 2002 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
70ad3506 | 2003 | enum mlxsw_reg_ralue_trap_action trap_action; |
61c503f9 | 2004 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
9aecce1c | 2005 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
70ad3506 | 2006 | u16 trap_id = 0; |
bf95233e | 2007 | u16 rif_index = 0; |
70ad3506 IS |
2008 | |
2009 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { | |
2010 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; | |
bf95233e | 2011 | rif_index = rif->rif_index; |
70ad3506 IS |
2012 | } else { |
2013 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
2014 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
2015 | } | |
61c503f9 | 2016 | |
1a9234e6 | 2017 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
2018 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
2019 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 2020 | *p_dip); |
bf95233e AS |
2021 | mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id, |
2022 | rif_index); | |
61c503f9 JP |
2023 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); |
2024 | } | |
2025 | ||
2026 | static int mlxsw_sp_fib_entry_op4_trap(struct mlxsw_sp *mlxsw_sp, | |
2027 | struct mlxsw_sp_fib_entry *fib_entry, | |
2028 | enum mlxsw_reg_ralue_op op) | |
2029 | { | |
76610ebb | 2030 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
61c503f9 | 2031 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
9aecce1c | 2032 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
61c503f9 | 2033 | |
1a9234e6 | 2034 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
2035 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
2036 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 2037 | *p_dip); |
61c503f9 JP |
2038 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); |
2039 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
2040 | } | |
2041 | ||
2042 | static int mlxsw_sp_fib_entry_op4(struct mlxsw_sp *mlxsw_sp, | |
2043 | struct mlxsw_sp_fib_entry *fib_entry, | |
2044 | enum mlxsw_reg_ralue_op op) | |
2045 | { | |
2046 | switch (fib_entry->type) { | |
2047 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
a7ff87ac | 2048 | return mlxsw_sp_fib_entry_op4_remote(mlxsw_sp, fib_entry, op); |
61c503f9 JP |
2049 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: |
2050 | return mlxsw_sp_fib_entry_op4_local(mlxsw_sp, fib_entry, op); | |
2051 | case MLXSW_SP_FIB_ENTRY_TYPE_TRAP: | |
2052 | return mlxsw_sp_fib_entry_op4_trap(mlxsw_sp, fib_entry, op); | |
2053 | } | |
2054 | return -EINVAL; | |
2055 | } | |
2056 | ||
2057 | static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, | |
2058 | struct mlxsw_sp_fib_entry *fib_entry, | |
2059 | enum mlxsw_reg_ralue_op op) | |
2060 | { | |
013b20f9 IS |
2061 | int err = -EINVAL; |
2062 | ||
76610ebb | 2063 | switch (fib_entry->fib_node->fib->proto) { |
61c503f9 | 2064 | case MLXSW_SP_L3_PROTO_IPV4: |
013b20f9 IS |
2065 | err = mlxsw_sp_fib_entry_op4(mlxsw_sp, fib_entry, op); |
2066 | break; | |
61c503f9 | 2067 | case MLXSW_SP_L3_PROTO_IPV6: |
013b20f9 | 2068 | return err; |
61c503f9 | 2069 | } |
013b20f9 IS |
2070 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, err); |
2071 | return err; | |
61c503f9 JP |
2072 | } |
2073 | ||
2074 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
2075 | struct mlxsw_sp_fib_entry *fib_entry) | |
2076 | { | |
7146da31 JP |
2077 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, |
2078 | MLXSW_REG_RALUE_OP_WRITE_WRITE); | |
61c503f9 JP |
2079 | } |
2080 | ||
2081 | static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp, | |
2082 | struct mlxsw_sp_fib_entry *fib_entry) | |
2083 | { | |
2084 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, | |
2085 | MLXSW_REG_RALUE_OP_WRITE_DELETE); | |
2086 | } | |
2087 | ||
61c503f9 | 2088 | static int |
013b20f9 IS |
2089 | mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp, |
2090 | const struct fib_entry_notifier_info *fen_info, | |
2091 | struct mlxsw_sp_fib_entry *fib_entry) | |
61c503f9 | 2092 | { |
b45f64d1 | 2093 | struct fib_info *fi = fen_info->fi; |
61c503f9 | 2094 | |
97989ee0 IS |
2095 | switch (fen_info->type) { |
2096 | case RTN_BROADCAST: /* fall through */ | |
2097 | case RTN_LOCAL: | |
61c503f9 JP |
2098 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; |
2099 | return 0; | |
97989ee0 IS |
2100 | case RTN_UNREACHABLE: /* fall through */ |
2101 | case RTN_BLACKHOLE: /* fall through */ | |
2102 | case RTN_PROHIBIT: | |
2103 | /* Packets hitting these routes need to be trapped, but | |
2104 | * can do so with a lower priority than packets directed | |
2105 | * at the host, so use action type local instead of trap. | |
2106 | */ | |
61c503f9 | 2107 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; |
97989ee0 IS |
2108 | return 0; |
2109 | case RTN_UNICAST: | |
2110 | if (fi->fib_nh->nh_scope != RT_SCOPE_LINK) | |
2111 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
2112 | else | |
2113 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; | |
2114 | return 0; | |
2115 | default: | |
2116 | return -EINVAL; | |
2117 | } | |
a7ff87ac JP |
2118 | } |
2119 | ||
5b004412 | 2120 | static struct mlxsw_sp_fib_entry * |
9aecce1c IS |
2121 | mlxsw_sp_fib4_entry_create(struct mlxsw_sp *mlxsw_sp, |
2122 | struct mlxsw_sp_fib_node *fib_node, | |
2123 | const struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 2124 | { |
61c503f9 | 2125 | struct mlxsw_sp_fib_entry *fib_entry; |
61c503f9 JP |
2126 | int err; |
2127 | ||
9aecce1c | 2128 | fib_entry = kzalloc(sizeof(*fib_entry), GFP_KERNEL); |
61c503f9 JP |
2129 | if (!fib_entry) { |
2130 | err = -ENOMEM; | |
9aecce1c | 2131 | goto err_fib_entry_alloc; |
61c503f9 | 2132 | } |
61c503f9 | 2133 | |
013b20f9 | 2134 | err = mlxsw_sp_fib4_entry_type_set(mlxsw_sp, fen_info, fib_entry); |
61c503f9 | 2135 | if (err) |
013b20f9 | 2136 | goto err_fib4_entry_type_set; |
61c503f9 | 2137 | |
9aecce1c | 2138 | err = mlxsw_sp_nexthop_group_get(mlxsw_sp, fib_entry, fen_info->fi); |
b8399a1e IS |
2139 | if (err) |
2140 | goto err_nexthop_group_get; | |
2141 | ||
9aecce1c IS |
2142 | fib_entry->params.prio = fen_info->fi->fib_priority; |
2143 | fib_entry->params.tb_id = fen_info->tb_id; | |
2144 | fib_entry->params.type = fen_info->type; | |
2145 | fib_entry->params.tos = fen_info->tos; | |
2146 | ||
2147 | fib_entry->fib_node = fib_node; | |
2148 | ||
5b004412 JP |
2149 | return fib_entry; |
2150 | ||
b8399a1e | 2151 | err_nexthop_group_get: |
013b20f9 | 2152 | err_fib4_entry_type_set: |
9aecce1c IS |
2153 | kfree(fib_entry); |
2154 | err_fib_entry_alloc: | |
5b004412 JP |
2155 | return ERR_PTR(err); |
2156 | } | |
2157 | ||
9aecce1c IS |
2158 | static void mlxsw_sp_fib4_entry_destroy(struct mlxsw_sp *mlxsw_sp, |
2159 | struct mlxsw_sp_fib_entry *fib_entry) | |
2160 | { | |
2161 | mlxsw_sp_nexthop_group_put(mlxsw_sp, fib_entry); | |
2162 | kfree(fib_entry); | |
2163 | } | |
2164 | ||
2165 | static struct mlxsw_sp_fib_node * | |
2166 | mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp, | |
2167 | const struct fib_entry_notifier_info *fen_info); | |
2168 | ||
5b004412 | 2169 | static struct mlxsw_sp_fib_entry * |
9aecce1c IS |
2170 | mlxsw_sp_fib4_entry_lookup(struct mlxsw_sp *mlxsw_sp, |
2171 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 2172 | { |
9aecce1c IS |
2173 | struct mlxsw_sp_fib_entry *fib_entry; |
2174 | struct mlxsw_sp_fib_node *fib_node; | |
5b004412 | 2175 | |
9aecce1c IS |
2176 | fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info); |
2177 | if (IS_ERR(fib_node)) | |
2178 | return NULL; | |
2179 | ||
2180 | list_for_each_entry(fib_entry, &fib_node->entry_list, list) { | |
2181 | if (fib_entry->params.tb_id == fen_info->tb_id && | |
2182 | fib_entry->params.tos == fen_info->tos && | |
2183 | fib_entry->params.type == fen_info->type && | |
2184 | fib_entry->nh_group->key.fi == fen_info->fi) { | |
2185 | return fib_entry; | |
2186 | } | |
2187 | } | |
2188 | ||
2189 | return NULL; | |
2190 | } | |
2191 | ||
2192 | static const struct rhashtable_params mlxsw_sp_fib_ht_params = { | |
2193 | .key_offset = offsetof(struct mlxsw_sp_fib_node, key), | |
2194 | .head_offset = offsetof(struct mlxsw_sp_fib_node, ht_node), | |
2195 | .key_len = sizeof(struct mlxsw_sp_fib_key), | |
2196 | .automatic_shrinking = true, | |
2197 | }; | |
2198 | ||
2199 | static int mlxsw_sp_fib_node_insert(struct mlxsw_sp_fib *fib, | |
2200 | struct mlxsw_sp_fib_node *fib_node) | |
2201 | { | |
2202 | return rhashtable_insert_fast(&fib->ht, &fib_node->ht_node, | |
2203 | mlxsw_sp_fib_ht_params); | |
2204 | } | |
2205 | ||
2206 | static void mlxsw_sp_fib_node_remove(struct mlxsw_sp_fib *fib, | |
2207 | struct mlxsw_sp_fib_node *fib_node) | |
2208 | { | |
2209 | rhashtable_remove_fast(&fib->ht, &fib_node->ht_node, | |
2210 | mlxsw_sp_fib_ht_params); | |
2211 | } | |
2212 | ||
2213 | static struct mlxsw_sp_fib_node * | |
2214 | mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr, | |
2215 | size_t addr_len, unsigned char prefix_len) | |
2216 | { | |
2217 | struct mlxsw_sp_fib_key key; | |
2218 | ||
2219 | memset(&key, 0, sizeof(key)); | |
2220 | memcpy(key.addr, addr, addr_len); | |
2221 | key.prefix_len = prefix_len; | |
2222 | return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params); | |
2223 | } | |
2224 | ||
2225 | static struct mlxsw_sp_fib_node * | |
76610ebb | 2226 | mlxsw_sp_fib_node_create(struct mlxsw_sp_fib *fib, const void *addr, |
9aecce1c IS |
2227 | size_t addr_len, unsigned char prefix_len) |
2228 | { | |
2229 | struct mlxsw_sp_fib_node *fib_node; | |
2230 | ||
2231 | fib_node = kzalloc(sizeof(*fib_node), GFP_KERNEL); | |
2232 | if (!fib_node) | |
5b004412 JP |
2233 | return NULL; |
2234 | ||
9aecce1c | 2235 | INIT_LIST_HEAD(&fib_node->entry_list); |
76610ebb | 2236 | list_add(&fib_node->list, &fib->node_list); |
9aecce1c IS |
2237 | memcpy(fib_node->key.addr, addr, addr_len); |
2238 | fib_node->key.prefix_len = prefix_len; | |
9aecce1c IS |
2239 | |
2240 | return fib_node; | |
2241 | } | |
2242 | ||
2243 | static void mlxsw_sp_fib_node_destroy(struct mlxsw_sp_fib_node *fib_node) | |
2244 | { | |
9aecce1c IS |
2245 | list_del(&fib_node->list); |
2246 | WARN_ON(!list_empty(&fib_node->entry_list)); | |
2247 | kfree(fib_node); | |
2248 | } | |
2249 | ||
2250 | static bool | |
2251 | mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node, | |
2252 | const struct mlxsw_sp_fib_entry *fib_entry) | |
2253 | { | |
2254 | return list_first_entry(&fib_node->entry_list, | |
2255 | struct mlxsw_sp_fib_entry, list) == fib_entry; | |
2256 | } | |
2257 | ||
2258 | static void mlxsw_sp_fib_node_prefix_inc(struct mlxsw_sp_fib_node *fib_node) | |
2259 | { | |
2260 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 2261 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
2262 | |
2263 | if (fib->prefix_ref_count[prefix_len]++ == 0) | |
2264 | mlxsw_sp_prefix_usage_set(&fib->prefix_usage, prefix_len); | |
2265 | } | |
2266 | ||
2267 | static void mlxsw_sp_fib_node_prefix_dec(struct mlxsw_sp_fib_node *fib_node) | |
2268 | { | |
2269 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 2270 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
2271 | |
2272 | if (--fib->prefix_ref_count[prefix_len] == 0) | |
2273 | mlxsw_sp_prefix_usage_clear(&fib->prefix_usage, prefix_len); | |
5b004412 JP |
2274 | } |
2275 | ||
76610ebb IS |
2276 | static int mlxsw_sp_fib_node_init(struct mlxsw_sp *mlxsw_sp, |
2277 | struct mlxsw_sp_fib_node *fib_node, | |
2278 | struct mlxsw_sp_fib *fib) | |
2279 | { | |
2280 | struct mlxsw_sp_prefix_usage req_prefix_usage; | |
2281 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
2282 | int err; | |
2283 | ||
2284 | err = mlxsw_sp_fib_node_insert(fib, fib_node); | |
2285 | if (err) | |
2286 | return err; | |
2287 | fib_node->fib = fib; | |
2288 | ||
2289 | mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, &fib->prefix_usage); | |
2290 | mlxsw_sp_prefix_usage_set(&req_prefix_usage, fib_node->key.prefix_len); | |
2291 | ||
2292 | if (!mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) { | |
2293 | err = mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib, | |
2294 | &req_prefix_usage); | |
2295 | if (err) | |
2296 | goto err_tree_check; | |
2297 | } else { | |
2298 | lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, | |
2299 | fib->proto); | |
2300 | if (IS_ERR(lpm_tree)) | |
2301 | return PTR_ERR(lpm_tree); | |
2302 | fib->lpm_tree = lpm_tree; | |
2303 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib); | |
2304 | if (err) | |
2305 | goto err_tree_bind; | |
2306 | } | |
2307 | ||
2308 | mlxsw_sp_fib_node_prefix_inc(fib_node); | |
2309 | ||
2310 | return 0; | |
2311 | ||
2312 | err_tree_bind: | |
2313 | fib->lpm_tree = NULL; | |
2314 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
2315 | err_tree_check: | |
2316 | fib_node->fib = NULL; | |
2317 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
2318 | return err; | |
2319 | } | |
2320 | ||
2321 | static void mlxsw_sp_fib_node_fini(struct mlxsw_sp *mlxsw_sp, | |
2322 | struct mlxsw_sp_fib_node *fib_node) | |
2323 | { | |
2324 | struct mlxsw_sp_lpm_tree *lpm_tree = fib_node->fib->lpm_tree; | |
2325 | struct mlxsw_sp_fib *fib = fib_node->fib; | |
2326 | ||
2327 | mlxsw_sp_fib_node_prefix_dec(fib_node); | |
2328 | ||
2329 | if (mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) { | |
2330 | mlxsw_sp_vr_lpm_tree_unbind(mlxsw_sp, fib); | |
2331 | fib->lpm_tree = NULL; | |
2332 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
2333 | } else { | |
2334 | mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib, &fib->prefix_usage); | |
2335 | } | |
2336 | ||
2337 | fib_node->fib = NULL; | |
2338 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
2339 | } | |
2340 | ||
9aecce1c IS |
2341 | static struct mlxsw_sp_fib_node * |
2342 | mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp, | |
2343 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 2344 | { |
9aecce1c | 2345 | struct mlxsw_sp_fib_node *fib_node; |
76610ebb | 2346 | struct mlxsw_sp_fib *fib; |
9aecce1c IS |
2347 | struct mlxsw_sp_vr *vr; |
2348 | int err; | |
2349 | ||
76610ebb | 2350 | vr = mlxsw_sp_vr_get(mlxsw_sp, fen_info->tb_id); |
9aecce1c IS |
2351 | if (IS_ERR(vr)) |
2352 | return ERR_CAST(vr); | |
76610ebb | 2353 | fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV4); |
9aecce1c | 2354 | |
76610ebb | 2355 | fib_node = mlxsw_sp_fib_node_lookup(fib, &fen_info->dst, |
9aecce1c IS |
2356 | sizeof(fen_info->dst), |
2357 | fen_info->dst_len); | |
2358 | if (fib_node) | |
2359 | return fib_node; | |
5b004412 | 2360 | |
76610ebb | 2361 | fib_node = mlxsw_sp_fib_node_create(fib, &fen_info->dst, |
9aecce1c IS |
2362 | sizeof(fen_info->dst), |
2363 | fen_info->dst_len); | |
2364 | if (!fib_node) { | |
2365 | err = -ENOMEM; | |
2366 | goto err_fib_node_create; | |
5b004412 | 2367 | } |
9aecce1c | 2368 | |
76610ebb IS |
2369 | err = mlxsw_sp_fib_node_init(mlxsw_sp, fib_node, fib); |
2370 | if (err) | |
2371 | goto err_fib_node_init; | |
2372 | ||
9aecce1c IS |
2373 | return fib_node; |
2374 | ||
76610ebb IS |
2375 | err_fib_node_init: |
2376 | mlxsw_sp_fib_node_destroy(fib_node); | |
9aecce1c | 2377 | err_fib_node_create: |
76610ebb | 2378 | mlxsw_sp_vr_put(vr); |
9aecce1c | 2379 | return ERR_PTR(err); |
5b004412 JP |
2380 | } |
2381 | ||
9aecce1c IS |
2382 | static void mlxsw_sp_fib4_node_put(struct mlxsw_sp *mlxsw_sp, |
2383 | struct mlxsw_sp_fib_node *fib_node) | |
5b004412 | 2384 | { |
76610ebb | 2385 | struct mlxsw_sp_vr *vr = fib_node->fib->vr; |
5b004412 | 2386 | |
9aecce1c IS |
2387 | if (!list_empty(&fib_node->entry_list)) |
2388 | return; | |
76610ebb | 2389 | mlxsw_sp_fib_node_fini(mlxsw_sp, fib_node); |
9aecce1c | 2390 | mlxsw_sp_fib_node_destroy(fib_node); |
76610ebb | 2391 | mlxsw_sp_vr_put(vr); |
61c503f9 JP |
2392 | } |
2393 | ||
9aecce1c IS |
2394 | static struct mlxsw_sp_fib_entry * |
2395 | mlxsw_sp_fib4_node_entry_find(const struct mlxsw_sp_fib_node *fib_node, | |
2396 | const struct mlxsw_sp_fib_entry_params *params) | |
61c503f9 | 2397 | { |
61c503f9 | 2398 | struct mlxsw_sp_fib_entry *fib_entry; |
9aecce1c IS |
2399 | |
2400 | list_for_each_entry(fib_entry, &fib_node->entry_list, list) { | |
2401 | if (fib_entry->params.tb_id > params->tb_id) | |
2402 | continue; | |
2403 | if (fib_entry->params.tb_id != params->tb_id) | |
2404 | break; | |
2405 | if (fib_entry->params.tos > params->tos) | |
2406 | continue; | |
2407 | if (fib_entry->params.prio >= params->prio || | |
2408 | fib_entry->params.tos < params->tos) | |
2409 | return fib_entry; | |
2410 | } | |
2411 | ||
2412 | return NULL; | |
2413 | } | |
2414 | ||
4283bce5 IS |
2415 | static int mlxsw_sp_fib4_node_list_append(struct mlxsw_sp_fib_entry *fib_entry, |
2416 | struct mlxsw_sp_fib_entry *new_entry) | |
2417 | { | |
2418 | struct mlxsw_sp_fib_node *fib_node; | |
2419 | ||
2420 | if (WARN_ON(!fib_entry)) | |
2421 | return -EINVAL; | |
2422 | ||
2423 | fib_node = fib_entry->fib_node; | |
2424 | list_for_each_entry_from(fib_entry, &fib_node->entry_list, list) { | |
2425 | if (fib_entry->params.tb_id != new_entry->params.tb_id || | |
2426 | fib_entry->params.tos != new_entry->params.tos || | |
2427 | fib_entry->params.prio != new_entry->params.prio) | |
2428 | break; | |
2429 | } | |
2430 | ||
2431 | list_add_tail(&new_entry->list, &fib_entry->list); | |
2432 | return 0; | |
2433 | } | |
2434 | ||
9aecce1c IS |
2435 | static int |
2436 | mlxsw_sp_fib4_node_list_insert(struct mlxsw_sp_fib_node *fib_node, | |
4283bce5 | 2437 | struct mlxsw_sp_fib_entry *new_entry, |
599cf8f9 | 2438 | bool replace, bool append) |
9aecce1c IS |
2439 | { |
2440 | struct mlxsw_sp_fib_entry *fib_entry; | |
2441 | ||
2442 | fib_entry = mlxsw_sp_fib4_node_entry_find(fib_node, &new_entry->params); | |
2443 | ||
4283bce5 IS |
2444 | if (append) |
2445 | return mlxsw_sp_fib4_node_list_append(fib_entry, new_entry); | |
599cf8f9 IS |
2446 | if (replace && WARN_ON(!fib_entry)) |
2447 | return -EINVAL; | |
4283bce5 | 2448 | |
599cf8f9 IS |
2449 | /* Insert new entry before replaced one, so that we can later |
2450 | * remove the second. | |
2451 | */ | |
9aecce1c IS |
2452 | if (fib_entry) { |
2453 | list_add_tail(&new_entry->list, &fib_entry->list); | |
2454 | } else { | |
2455 | struct mlxsw_sp_fib_entry *last; | |
2456 | ||
2457 | list_for_each_entry(last, &fib_node->entry_list, list) { | |
2458 | if (new_entry->params.tb_id > last->params.tb_id) | |
2459 | break; | |
2460 | fib_entry = last; | |
2461 | } | |
2462 | ||
2463 | if (fib_entry) | |
2464 | list_add(&new_entry->list, &fib_entry->list); | |
2465 | else | |
2466 | list_add(&new_entry->list, &fib_node->entry_list); | |
2467 | } | |
2468 | ||
2469 | return 0; | |
2470 | } | |
2471 | ||
2472 | static void | |
2473 | mlxsw_sp_fib4_node_list_remove(struct mlxsw_sp_fib_entry *fib_entry) | |
2474 | { | |
2475 | list_del(&fib_entry->list); | |
2476 | } | |
2477 | ||
2478 | static int | |
2479 | mlxsw_sp_fib4_node_entry_add(struct mlxsw_sp *mlxsw_sp, | |
2480 | const struct mlxsw_sp_fib_node *fib_node, | |
2481 | struct mlxsw_sp_fib_entry *fib_entry) | |
2482 | { | |
2483 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) | |
2484 | return 0; | |
2485 | ||
2486 | /* To prevent packet loss, overwrite the previously offloaded | |
2487 | * entry. | |
2488 | */ | |
2489 | if (!list_is_singular(&fib_node->entry_list)) { | |
2490 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
2491 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
2492 | ||
2493 | mlxsw_sp_fib_entry_offload_refresh(n, op, 0); | |
2494 | } | |
2495 | ||
2496 | return mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
2497 | } | |
2498 | ||
2499 | static void | |
2500 | mlxsw_sp_fib4_node_entry_del(struct mlxsw_sp *mlxsw_sp, | |
2501 | const struct mlxsw_sp_fib_node *fib_node, | |
2502 | struct mlxsw_sp_fib_entry *fib_entry) | |
2503 | { | |
2504 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) | |
2505 | return; | |
2506 | ||
2507 | /* Promote the next entry by overwriting the deleted entry */ | |
2508 | if (!list_is_singular(&fib_node->entry_list)) { | |
2509 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
2510 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
2511 | ||
2512 | mlxsw_sp_fib_entry_update(mlxsw_sp, n); | |
2513 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0); | |
2514 | return; | |
2515 | } | |
2516 | ||
2517 | mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry); | |
2518 | } | |
2519 | ||
2520 | static int mlxsw_sp_fib4_node_entry_link(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 2521 | struct mlxsw_sp_fib_entry *fib_entry, |
599cf8f9 | 2522 | bool replace, bool append) |
9aecce1c IS |
2523 | { |
2524 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2525 | int err; | |
2526 | ||
599cf8f9 IS |
2527 | err = mlxsw_sp_fib4_node_list_insert(fib_node, fib_entry, replace, |
2528 | append); | |
9aecce1c IS |
2529 | if (err) |
2530 | return err; | |
2531 | ||
2532 | err = mlxsw_sp_fib4_node_entry_add(mlxsw_sp, fib_node, fib_entry); | |
2533 | if (err) | |
2534 | goto err_fib4_node_entry_add; | |
2535 | ||
9aecce1c IS |
2536 | return 0; |
2537 | ||
2538 | err_fib4_node_entry_add: | |
2539 | mlxsw_sp_fib4_node_list_remove(fib_entry); | |
2540 | return err; | |
2541 | } | |
2542 | ||
2543 | static void | |
2544 | mlxsw_sp_fib4_node_entry_unlink(struct mlxsw_sp *mlxsw_sp, | |
2545 | struct mlxsw_sp_fib_entry *fib_entry) | |
2546 | { | |
2547 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2548 | ||
9aecce1c IS |
2549 | mlxsw_sp_fib4_node_entry_del(mlxsw_sp, fib_node, fib_entry); |
2550 | mlxsw_sp_fib4_node_list_remove(fib_entry); | |
2551 | } | |
2552 | ||
599cf8f9 IS |
2553 | static void mlxsw_sp_fib4_entry_replace(struct mlxsw_sp *mlxsw_sp, |
2554 | struct mlxsw_sp_fib_entry *fib_entry, | |
2555 | bool replace) | |
2556 | { | |
2557 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2558 | struct mlxsw_sp_fib_entry *replaced; | |
2559 | ||
2560 | if (!replace) | |
2561 | return; | |
2562 | ||
2563 | /* We inserted the new entry before replaced one */ | |
2564 | replaced = list_next_entry(fib_entry, list); | |
2565 | ||
2566 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, replaced); | |
2567 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, replaced); | |
2568 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
2569 | } | |
2570 | ||
9aecce1c IS |
2571 | static int |
2572 | mlxsw_sp_router_fib4_add(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 2573 | const struct fib_entry_notifier_info *fen_info, |
599cf8f9 | 2574 | bool replace, bool append) |
9aecce1c IS |
2575 | { |
2576 | struct mlxsw_sp_fib_entry *fib_entry; | |
2577 | struct mlxsw_sp_fib_node *fib_node; | |
61c503f9 JP |
2578 | int err; |
2579 | ||
9011b677 | 2580 | if (mlxsw_sp->router->aborted) |
b45f64d1 JP |
2581 | return 0; |
2582 | ||
9aecce1c IS |
2583 | fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info); |
2584 | if (IS_ERR(fib_node)) { | |
2585 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to get FIB node\n"); | |
2586 | return PTR_ERR(fib_node); | |
b45f64d1 | 2587 | } |
61c503f9 | 2588 | |
9aecce1c IS |
2589 | fib_entry = mlxsw_sp_fib4_entry_create(mlxsw_sp, fib_node, fen_info); |
2590 | if (IS_ERR(fib_entry)) { | |
2591 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to create FIB entry\n"); | |
2592 | err = PTR_ERR(fib_entry); | |
2593 | goto err_fib4_entry_create; | |
2594 | } | |
5b004412 | 2595 | |
599cf8f9 IS |
2596 | err = mlxsw_sp_fib4_node_entry_link(mlxsw_sp, fib_entry, replace, |
2597 | append); | |
b45f64d1 | 2598 | if (err) { |
9aecce1c IS |
2599 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to link FIB entry to node\n"); |
2600 | goto err_fib4_node_entry_link; | |
b45f64d1 | 2601 | } |
9aecce1c | 2602 | |
599cf8f9 IS |
2603 | mlxsw_sp_fib4_entry_replace(mlxsw_sp, fib_entry, replace); |
2604 | ||
61c503f9 JP |
2605 | return 0; |
2606 | ||
9aecce1c IS |
2607 | err_fib4_node_entry_link: |
2608 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2609 | err_fib4_entry_create: | |
2610 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
61c503f9 JP |
2611 | return err; |
2612 | } | |
2613 | ||
37956d78 JP |
2614 | static void mlxsw_sp_router_fib4_del(struct mlxsw_sp *mlxsw_sp, |
2615 | struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 2616 | { |
61c503f9 | 2617 | struct mlxsw_sp_fib_entry *fib_entry; |
9aecce1c | 2618 | struct mlxsw_sp_fib_node *fib_node; |
61c503f9 | 2619 | |
9011b677 | 2620 | if (mlxsw_sp->router->aborted) |
37956d78 | 2621 | return; |
b45f64d1 | 2622 | |
9aecce1c IS |
2623 | fib_entry = mlxsw_sp_fib4_entry_lookup(mlxsw_sp, fen_info); |
2624 | if (WARN_ON(!fib_entry)) | |
37956d78 | 2625 | return; |
9aecce1c | 2626 | fib_node = fib_entry->fib_node; |
5b004412 | 2627 | |
9aecce1c IS |
2628 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry); |
2629 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2630 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
61c503f9 | 2631 | } |
b45f64d1 JP |
2632 | |
2633 | static int mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp) | |
2634 | { | |
2635 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
2636 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
b5d90e6d | 2637 | int i, err; |
b45f64d1 JP |
2638 | |
2639 | mlxsw_reg_ralta_pack(ralta_pl, true, MLXSW_REG_RALXX_PROTOCOL_IPV4, | |
2640 | MLXSW_SP_LPM_TREE_MIN); | |
2641 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); | |
2642 | if (err) | |
2643 | return err; | |
2644 | ||
2645 | mlxsw_reg_ralst_pack(ralst_pl, 0xff, MLXSW_SP_LPM_TREE_MIN); | |
2646 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); | |
2647 | if (err) | |
2648 | return err; | |
2649 | ||
b5d90e6d | 2650 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 2651 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; |
b5d90e6d IS |
2652 | char raltb_pl[MLXSW_REG_RALTB_LEN]; |
2653 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
b45f64d1 | 2654 | |
b5d90e6d IS |
2655 | if (!mlxsw_sp_vr_is_used(vr)) |
2656 | continue; | |
2657 | ||
2658 | mlxsw_reg_raltb_pack(raltb_pl, vr->id, | |
2659 | MLXSW_REG_RALXX_PROTOCOL_IPV4, | |
2660 | MLXSW_SP_LPM_TREE_MIN); | |
2661 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), | |
2662 | raltb_pl); | |
2663 | if (err) | |
2664 | return err; | |
2665 | ||
2666 | mlxsw_reg_ralue_pack4(ralue_pl, MLXSW_SP_L3_PROTO_IPV4, | |
2667 | MLXSW_REG_RALUE_OP_WRITE_WRITE, vr->id, 0, | |
2668 | 0); | |
2669 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); | |
2670 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), | |
2671 | ralue_pl); | |
2672 | if (err) | |
2673 | return err; | |
2674 | } | |
2675 | ||
2676 | return 0; | |
b45f64d1 JP |
2677 | } |
2678 | ||
9aecce1c IS |
2679 | static void mlxsw_sp_fib4_node_flush(struct mlxsw_sp *mlxsw_sp, |
2680 | struct mlxsw_sp_fib_node *fib_node) | |
2681 | { | |
2682 | struct mlxsw_sp_fib_entry *fib_entry, *tmp; | |
2683 | ||
2684 | list_for_each_entry_safe(fib_entry, tmp, &fib_node->entry_list, list) { | |
2685 | bool do_break = &tmp->list == &fib_node->entry_list; | |
2686 | ||
2687 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry); | |
2688 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2689 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
2690 | /* Break when entry list is empty and node was freed. | |
2691 | * Otherwise, we'll access freed memory in the next | |
2692 | * iteration. | |
2693 | */ | |
2694 | if (do_break) | |
2695 | break; | |
2696 | } | |
2697 | } | |
2698 | ||
2699 | static void mlxsw_sp_fib_node_flush(struct mlxsw_sp *mlxsw_sp, | |
2700 | struct mlxsw_sp_fib_node *fib_node) | |
2701 | { | |
76610ebb | 2702 | switch (fib_node->fib->proto) { |
9aecce1c IS |
2703 | case MLXSW_SP_L3_PROTO_IPV4: |
2704 | mlxsw_sp_fib4_node_flush(mlxsw_sp, fib_node); | |
2705 | break; | |
2706 | case MLXSW_SP_L3_PROTO_IPV6: | |
2707 | WARN_ON_ONCE(1); | |
2708 | break; | |
2709 | } | |
2710 | } | |
2711 | ||
76610ebb IS |
2712 | static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp, |
2713 | struct mlxsw_sp_vr *vr, | |
2714 | enum mlxsw_sp_l3proto proto) | |
b45f64d1 | 2715 | { |
76610ebb | 2716 | struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); |
9aecce1c | 2717 | struct mlxsw_sp_fib_node *fib_node, *tmp; |
76610ebb IS |
2718 | |
2719 | list_for_each_entry_safe(fib_node, tmp, &fib->node_list, list) { | |
2720 | bool do_break = &tmp->list == &fib->node_list; | |
2721 | ||
2722 | mlxsw_sp_fib_node_flush(mlxsw_sp, fib_node); | |
2723 | if (do_break) | |
2724 | break; | |
2725 | } | |
2726 | } | |
2727 | ||
2728 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp) | |
2729 | { | |
b45f64d1 | 2730 | int i; |
b45f64d1 | 2731 | |
c1a38311 | 2732 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
9011b677 | 2733 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; |
ac571de9 | 2734 | |
76610ebb | 2735 | if (!mlxsw_sp_vr_is_used(vr)) |
b45f64d1 | 2736 | continue; |
76610ebb | 2737 | mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4); |
b45f64d1 | 2738 | } |
ac571de9 IS |
2739 | } |
2740 | ||
2741 | static void mlxsw_sp_router_fib4_abort(struct mlxsw_sp *mlxsw_sp) | |
2742 | { | |
2743 | int err; | |
2744 | ||
9011b677 | 2745 | if (mlxsw_sp->router->aborted) |
d331d303 IS |
2746 | return; |
2747 | dev_warn(mlxsw_sp->bus_info->dev, "FIB abort triggered. Note that FIB entries are no longer being offloaded to this device.\n"); | |
ac571de9 | 2748 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
9011b677 | 2749 | mlxsw_sp->router->aborted = true; |
b45f64d1 JP |
2750 | err = mlxsw_sp_router_set_abort_trap(mlxsw_sp); |
2751 | if (err) | |
2752 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set abort trap.\n"); | |
2753 | } | |
2754 | ||
3057224e | 2755 | struct mlxsw_sp_fib_event_work { |
a0e4761d | 2756 | struct work_struct work; |
ad178c8e IS |
2757 | union { |
2758 | struct fib_entry_notifier_info fen_info; | |
5d7bfd14 | 2759 | struct fib_rule_notifier_info fr_info; |
ad178c8e IS |
2760 | struct fib_nh_notifier_info fnh_info; |
2761 | }; | |
3057224e IS |
2762 | struct mlxsw_sp *mlxsw_sp; |
2763 | unsigned long event; | |
2764 | }; | |
2765 | ||
2766 | static void mlxsw_sp_router_fib_event_work(struct work_struct *work) | |
b45f64d1 | 2767 | { |
3057224e | 2768 | struct mlxsw_sp_fib_event_work *fib_work = |
a0e4761d | 2769 | container_of(work, struct mlxsw_sp_fib_event_work, work); |
3057224e | 2770 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; |
5d7bfd14 | 2771 | struct fib_rule *rule; |
599cf8f9 | 2772 | bool replace, append; |
b45f64d1 JP |
2773 | int err; |
2774 | ||
3057224e IS |
2775 | /* Protect internal structures from changes */ |
2776 | rtnl_lock(); | |
2777 | switch (fib_work->event) { | |
599cf8f9 | 2778 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 2779 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
b45f64d1 | 2780 | case FIB_EVENT_ENTRY_ADD: |
599cf8f9 | 2781 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; |
4283bce5 IS |
2782 | append = fib_work->event == FIB_EVENT_ENTRY_APPEND; |
2783 | err = mlxsw_sp_router_fib4_add(mlxsw_sp, &fib_work->fen_info, | |
599cf8f9 | 2784 | replace, append); |
b45f64d1 JP |
2785 | if (err) |
2786 | mlxsw_sp_router_fib4_abort(mlxsw_sp); | |
3057224e | 2787 | fib_info_put(fib_work->fen_info.fi); |
b45f64d1 JP |
2788 | break; |
2789 | case FIB_EVENT_ENTRY_DEL: | |
3057224e IS |
2790 | mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info); |
2791 | fib_info_put(fib_work->fen_info.fi); | |
b45f64d1 JP |
2792 | break; |
2793 | case FIB_EVENT_RULE_ADD: /* fall through */ | |
2794 | case FIB_EVENT_RULE_DEL: | |
5d7bfd14 | 2795 | rule = fib_work->fr_info.rule; |
c7f6e665 | 2796 | if (!fib4_rule_default(rule) && !rule->l3mdev) |
5d7bfd14 IS |
2797 | mlxsw_sp_router_fib4_abort(mlxsw_sp); |
2798 | fib_rule_put(rule); | |
b45f64d1 | 2799 | break; |
ad178c8e IS |
2800 | case FIB_EVENT_NH_ADD: /* fall through */ |
2801 | case FIB_EVENT_NH_DEL: | |
2802 | mlxsw_sp_nexthop_event(mlxsw_sp, fib_work->event, | |
2803 | fib_work->fnh_info.fib_nh); | |
2804 | fib_info_put(fib_work->fnh_info.fib_nh->nh_parent); | |
2805 | break; | |
b45f64d1 | 2806 | } |
3057224e IS |
2807 | rtnl_unlock(); |
2808 | kfree(fib_work); | |
2809 | } | |
2810 | ||
2811 | /* Called with rcu_read_lock() */ | |
2812 | static int mlxsw_sp_router_fib_event(struct notifier_block *nb, | |
2813 | unsigned long event, void *ptr) | |
2814 | { | |
3057224e IS |
2815 | struct mlxsw_sp_fib_event_work *fib_work; |
2816 | struct fib_notifier_info *info = ptr; | |
7e39d115 | 2817 | struct mlxsw_sp_router *router; |
3057224e IS |
2818 | |
2819 | if (!net_eq(info->net, &init_net)) | |
2820 | return NOTIFY_DONE; | |
2821 | ||
2822 | fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC); | |
2823 | if (WARN_ON(!fib_work)) | |
2824 | return NOTIFY_BAD; | |
2825 | ||
a0e4761d | 2826 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fib_event_work); |
7e39d115 IS |
2827 | router = container_of(nb, struct mlxsw_sp_router, fib_nb); |
2828 | fib_work->mlxsw_sp = router->mlxsw_sp; | |
3057224e IS |
2829 | fib_work->event = event; |
2830 | ||
2831 | switch (event) { | |
599cf8f9 | 2832 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 2833 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
3057224e IS |
2834 | case FIB_EVENT_ENTRY_ADD: /* fall through */ |
2835 | case FIB_EVENT_ENTRY_DEL: | |
2836 | memcpy(&fib_work->fen_info, ptr, sizeof(fib_work->fen_info)); | |
2837 | /* Take referece on fib_info to prevent it from being | |
2838 | * freed while work is queued. Release it afterwards. | |
2839 | */ | |
2840 | fib_info_hold(fib_work->fen_info.fi); | |
2841 | break; | |
5d7bfd14 IS |
2842 | case FIB_EVENT_RULE_ADD: /* fall through */ |
2843 | case FIB_EVENT_RULE_DEL: | |
2844 | memcpy(&fib_work->fr_info, ptr, sizeof(fib_work->fr_info)); | |
2845 | fib_rule_get(fib_work->fr_info.rule); | |
2846 | break; | |
ad178c8e IS |
2847 | case FIB_EVENT_NH_ADD: /* fall through */ |
2848 | case FIB_EVENT_NH_DEL: | |
2849 | memcpy(&fib_work->fnh_info, ptr, sizeof(fib_work->fnh_info)); | |
2850 | fib_info_hold(fib_work->fnh_info.fib_nh->nh_parent); | |
2851 | break; | |
3057224e IS |
2852 | } |
2853 | ||
a0e4761d | 2854 | mlxsw_core_schedule_work(&fib_work->work); |
3057224e | 2855 | |
b45f64d1 JP |
2856 | return NOTIFY_DONE; |
2857 | } | |
2858 | ||
4724ba56 IS |
2859 | static struct mlxsw_sp_rif * |
2860 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
2861 | const struct net_device *dev) | |
2862 | { | |
2863 | int i; | |
2864 | ||
2865 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
5f9efffb IS |
2866 | if (mlxsw_sp->router->rifs[i] && |
2867 | mlxsw_sp->router->rifs[i]->dev == dev) | |
2868 | return mlxsw_sp->router->rifs[i]; | |
4724ba56 IS |
2869 | |
2870 | return NULL; | |
2871 | } | |
2872 | ||
2873 | static int mlxsw_sp_router_rif_disable(struct mlxsw_sp *mlxsw_sp, u16 rif) | |
2874 | { | |
2875 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
2876 | int err; | |
2877 | ||
2878 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif); | |
2879 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2880 | if (WARN_ON_ONCE(err)) | |
2881 | return err; | |
2882 | ||
2883 | mlxsw_reg_ritr_enable_set(ritr_pl, false); | |
2884 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2885 | } | |
2886 | ||
2887 | static void mlxsw_sp_router_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
bf95233e | 2888 | struct mlxsw_sp_rif *rif) |
4724ba56 | 2889 | { |
bf95233e AS |
2890 | mlxsw_sp_router_rif_disable(mlxsw_sp, rif->rif_index); |
2891 | mlxsw_sp_nexthop_rif_gone_sync(mlxsw_sp, rif); | |
2892 | mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, rif); | |
4724ba56 IS |
2893 | } |
2894 | ||
bf95233e | 2895 | static bool mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *rif, |
4724ba56 IS |
2896 | const struct in_device *in_dev, |
2897 | unsigned long event) | |
2898 | { | |
2899 | switch (event) { | |
2900 | case NETDEV_UP: | |
bf95233e | 2901 | if (!rif) |
4724ba56 IS |
2902 | return true; |
2903 | return false; | |
2904 | case NETDEV_DOWN: | |
bf95233e AS |
2905 | if (rif && !in_dev->ifa_list && |
2906 | !netif_is_l3_slave(rif->dev)) | |
4724ba56 IS |
2907 | return true; |
2908 | /* It is possible we already removed the RIF ourselves | |
2909 | * if it was assigned to a netdev that is now a bridge | |
2910 | * or LAG slave. | |
2911 | */ | |
2912 | return false; | |
2913 | } | |
2914 | ||
2915 | return false; | |
2916 | } | |
2917 | ||
bf95233e | 2918 | #define MLXSW_SP_INVALID_INDEX_RIF 0xffff |
4724ba56 IS |
2919 | static int mlxsw_sp_avail_rif_get(struct mlxsw_sp *mlxsw_sp) |
2920 | { | |
2921 | int i; | |
2922 | ||
2923 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
5f9efffb | 2924 | if (!mlxsw_sp->router->rifs[i]) |
4724ba56 IS |
2925 | return i; |
2926 | ||
bf95233e | 2927 | return MLXSW_SP_INVALID_INDEX_RIF; |
4724ba56 IS |
2928 | } |
2929 | ||
7cbecf24 | 2930 | static int |
ab01ae91 IS |
2931 | mlxsw_sp_port_vlan_rif_sp_op(struct mlxsw_sp *mlxsw_sp, |
2932 | const struct mlxsw_sp_rif *rif, bool create) | |
4724ba56 | 2933 | { |
ab01ae91 | 2934 | struct mlxsw_sp_rif_subport *rif_subport; |
4724ba56 | 2935 | char ritr_pl[MLXSW_REG_RITR_LEN]; |
4724ba56 | 2936 | |
ab01ae91 IS |
2937 | rif_subport = container_of(rif, struct mlxsw_sp_rif_subport, common); |
2938 | mlxsw_reg_ritr_pack(ritr_pl, create, MLXSW_REG_RITR_SP_IF, | |
2939 | rif->rif_index, rif->vr_id, rif->dev->mtu, | |
2940 | rif->dev->dev_addr); | |
2941 | mlxsw_reg_ritr_sp_if_pack(ritr_pl, rif_subport->lag, | |
2942 | rif_subport->lag ? rif_subport->lag_id : | |
2943 | rif_subport->system_port, | |
2944 | rif_subport->vid); | |
4724ba56 IS |
2945 | |
2946 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2947 | } | |
2948 | ||
ce95e154 IS |
2949 | static void |
2950 | mlxsw_sp_port_vlan_rif_sp_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan); | |
4724ba56 | 2951 | |
bf95233e | 2952 | static u16 mlxsw_sp_rif_sp_to_fid(u16 rif_index) |
4724ba56 | 2953 | { |
bf95233e | 2954 | return MLXSW_SP_RFID_BASE + rif_index; |
4724ba56 IS |
2955 | } |
2956 | ||
2957 | static struct mlxsw_sp_fid * | |
2958 | mlxsw_sp_rfid_alloc(u16 fid, struct net_device *l3_dev) | |
2959 | { | |
2960 | struct mlxsw_sp_fid *f; | |
2961 | ||
2962 | f = kzalloc(sizeof(*f), GFP_KERNEL); | |
2963 | if (!f) | |
2964 | return NULL; | |
2965 | ||
ce95e154 | 2966 | f->leave = mlxsw_sp_port_vlan_rif_sp_leave; |
4724ba56 IS |
2967 | f->ref_count = 0; |
2968 | f->dev = l3_dev; | |
2969 | f->fid = fid; | |
2970 | ||
2971 | return f; | |
2972 | } | |
2973 | ||
2974 | static struct mlxsw_sp_rif * | |
bf95233e | 2975 | mlxsw_sp_rif_alloc(u16 rif_index, u16 vr_id, struct net_device *l3_dev, |
4d93ceeb | 2976 | struct mlxsw_sp_fid *f, bool is_subport) |
4724ba56 | 2977 | { |
4d93ceeb IS |
2978 | size_t size = is_subport ? sizeof(struct mlxsw_sp_rif_subport) : |
2979 | sizeof(struct mlxsw_sp_rif); | |
bf95233e | 2980 | struct mlxsw_sp_rif *rif; |
4724ba56 | 2981 | |
4d93ceeb | 2982 | rif = kzalloc(size, GFP_KERNEL); |
bf95233e | 2983 | if (!rif) |
4724ba56 IS |
2984 | return NULL; |
2985 | ||
bf95233e AS |
2986 | INIT_LIST_HEAD(&rif->nexthop_list); |
2987 | INIT_LIST_HEAD(&rif->neigh_list); | |
2988 | ether_addr_copy(rif->addr, l3_dev->dev_addr); | |
2989 | rif->mtu = l3_dev->mtu; | |
2990 | rif->vr_id = vr_id; | |
2991 | rif->dev = l3_dev; | |
2992 | rif->rif_index = rif_index; | |
2993 | rif->f = f; | |
4724ba56 | 2994 | |
bf95233e | 2995 | return rif; |
4724ba56 IS |
2996 | } |
2997 | ||
5f9efffb IS |
2998 | struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp, |
2999 | u16 rif_index) | |
3000 | { | |
3001 | return mlxsw_sp->router->rifs[rif_index]; | |
3002 | } | |
3003 | ||
fd1b9d41 AS |
3004 | u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif) |
3005 | { | |
3006 | return rif->rif_index; | |
3007 | } | |
3008 | ||
3009 | int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif) | |
3010 | { | |
3011 | return rif->dev->ifindex; | |
3012 | } | |
3013 | ||
4724ba56 | 3014 | static struct mlxsw_sp_rif * |
7cbecf24 IS |
3015 | mlxsw_sp_port_vlan_rif_sp_create(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, |
3016 | struct net_device *l3_dev) | |
4724ba56 | 3017 | { |
7cbecf24 IS |
3018 | struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; |
3019 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
4d93ceeb | 3020 | struct mlxsw_sp_rif_subport *rif_subport; |
57837885 | 3021 | u32 tb_id = l3mdev_fib_table(l3_dev); |
6913229e | 3022 | struct mlxsw_sp_vr *vr; |
4724ba56 | 3023 | struct mlxsw_sp_fid *f; |
bf95233e AS |
3024 | struct mlxsw_sp_rif *rif; |
3025 | u16 fid, rif_index; | |
4724ba56 IS |
3026 | int err; |
3027 | ||
c9ec53f0 IS |
3028 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN); |
3029 | if (IS_ERR(vr)) | |
3030 | return ERR_CAST(vr); | |
3031 | ||
bf95233e | 3032 | rif_index = mlxsw_sp_avail_rif_get(mlxsw_sp); |
c9ec53f0 IS |
3033 | if (rif_index == MLXSW_SP_INVALID_INDEX_RIF) { |
3034 | err = -ERANGE; | |
3035 | goto err_avail_rif_get; | |
3036 | } | |
4724ba56 | 3037 | |
caa3ddf8 IS |
3038 | fid = mlxsw_sp_rif_sp_to_fid(rif_index); |
3039 | f = mlxsw_sp_rfid_alloc(fid, l3_dev); | |
c9ec53f0 IS |
3040 | if (!f) { |
3041 | err = -ENOMEM; | |
3042 | goto err_rfid_alloc; | |
caa3ddf8 | 3043 | } |
6913229e | 3044 | |
4d93ceeb | 3045 | rif = mlxsw_sp_rif_alloc(rif_index, vr->id, l3_dev, f, true); |
a13a594d IS |
3046 | if (!rif) { |
3047 | err = -ENOMEM; | |
3048 | goto err_rif_alloc; | |
3049 | } | |
3050 | ||
4d93ceeb IS |
3051 | rif_subport = container_of(rif, struct mlxsw_sp_rif_subport, common); |
3052 | rif_subport->vid = mlxsw_sp_port_vlan->vid; | |
3053 | if (mlxsw_sp_port->lagged) { | |
3054 | rif_subport->lag = true; | |
3055 | rif_subport->lag_id = mlxsw_sp_port->lag_id; | |
3056 | } else { | |
3057 | rif_subport->lag = false; | |
3058 | rif_subport->system_port = mlxsw_sp_port->local_port; | |
3059 | } | |
3060 | ||
ab01ae91 | 3061 | err = mlxsw_sp_port_vlan_rif_sp_op(mlxsw_sp, rif, true); |
4724ba56 | 3062 | if (err) |
7cbecf24 | 3063 | goto err_port_vlan_rif_sp_op; |
4724ba56 | 3064 | |
4724ba56 IS |
3065 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, true); |
3066 | if (err) | |
3067 | goto err_rif_fdb_op; | |
3068 | ||
e0c0afd8 AS |
3069 | if (devlink_dpipe_table_counter_enabled(priv_to_devlink(mlxsw_sp->core), |
3070 | MLXSW_SP_DPIPE_TABLE_NAME_ERIF)) { | |
3071 | err = mlxsw_sp_rif_counter_alloc(mlxsw_sp, rif, | |
3072 | MLXSW_SP_RIF_COUNTER_EGRESS); | |
3073 | if (err) | |
7cbecf24 | 3074 | netdev_dbg(mlxsw_sp_port->dev, |
e0c0afd8 AS |
3075 | "Counter alloc Failed err=%d\n", err); |
3076 | } | |
3077 | ||
bf95233e | 3078 | f->rif = rif; |
5f9efffb | 3079 | mlxsw_sp->router->rifs[rif_index] = rif; |
6913229e | 3080 | vr->rif_count++; |
4724ba56 | 3081 | |
bf95233e | 3082 | return rif; |
4724ba56 | 3083 | |
4724ba56 | 3084 | err_rif_fdb_op: |
ab01ae91 | 3085 | mlxsw_sp_port_vlan_rif_sp_op(mlxsw_sp, rif, false); |
7cbecf24 | 3086 | err_port_vlan_rif_sp_op: |
a13a594d IS |
3087 | kfree(rif); |
3088 | err_rif_alloc: | |
caa3ddf8 | 3089 | kfree(f); |
c9ec53f0 IS |
3090 | err_rfid_alloc: |
3091 | err_avail_rif_get: | |
3092 | mlxsw_sp_vr_put(vr); | |
4724ba56 IS |
3093 | return ERR_PTR(err); |
3094 | } | |
3095 | ||
7cbecf24 | 3096 | static void |
1b8f09a0 | 3097 | mlxsw_sp_port_vlan_rif_sp_destroy(struct mlxsw_sp *mlxsw_sp, |
7cbecf24 | 3098 | struct mlxsw_sp_rif *rif) |
4724ba56 | 3099 | { |
9011b677 | 3100 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[rif->vr_id]; |
bf95233e AS |
3101 | struct net_device *l3_dev = rif->dev; |
3102 | struct mlxsw_sp_fid *f = rif->f; | |
3103 | u16 rif_index = rif->rif_index; | |
4724ba56 | 3104 | u16 fid = f->fid; |
4724ba56 | 3105 | |
bf95233e | 3106 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif); |
4724ba56 | 3107 | |
e0c0afd8 AS |
3108 | mlxsw_sp_rif_counter_free(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_EGRESS); |
3109 | mlxsw_sp_rif_counter_free(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_INGRESS); | |
3110 | ||
6913229e | 3111 | vr->rif_count--; |
5f9efffb | 3112 | mlxsw_sp->router->rifs[rif_index] = NULL; |
bf95233e | 3113 | f->rif = NULL; |
4724ba56 | 3114 | |
4724ba56 IS |
3115 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false); |
3116 | ||
ab01ae91 | 3117 | mlxsw_sp_port_vlan_rif_sp_op(mlxsw_sp, rif, false); |
a13a594d | 3118 | kfree(rif); |
caa3ddf8 | 3119 | kfree(f); |
c9ec53f0 | 3120 | mlxsw_sp_vr_put(vr); |
4724ba56 IS |
3121 | } |
3122 | ||
7cbecf24 IS |
3123 | static int |
3124 | mlxsw_sp_port_vlan_rif_sp_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, | |
3125 | struct net_device *l3_dev) | |
4724ba56 | 3126 | { |
7cbecf24 | 3127 | struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; |
1b8f09a0 | 3128 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
7cbecf24 | 3129 | u16 vid = mlxsw_sp_port_vlan->vid; |
bf95233e | 3130 | struct mlxsw_sp_rif *rif; |
03ea01e9 | 3131 | int err; |
4724ba56 | 3132 | |
1b8f09a0 | 3133 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
bf95233e | 3134 | if (!rif) { |
7cbecf24 IS |
3135 | rif = mlxsw_sp_port_vlan_rif_sp_create(mlxsw_sp_port_vlan, |
3136 | l3_dev); | |
bf95233e AS |
3137 | if (IS_ERR(rif)) |
3138 | return PTR_ERR(rif); | |
4724ba56 IS |
3139 | } |
3140 | ||
7cbecf24 | 3141 | err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false); |
03ea01e9 IS |
3142 | if (err) |
3143 | goto err_port_vid_learning_set; | |
3144 | ||
7cbecf24 | 3145 | err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, |
03ea01e9 IS |
3146 | BR_STATE_FORWARDING); |
3147 | if (err) | |
3148 | goto err_port_vid_stp_set; | |
3149 | ||
4aafc368 IS |
3150 | if (mlxsw_sp_port->nr_port_vid_map++ == 0) { |
3151 | err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port); | |
3152 | if (err) | |
3153 | goto err_port_vp_mode_trans; | |
3154 | } | |
3155 | ||
7cbecf24 | 3156 | mlxsw_sp_port_vlan->fid = rif->f; |
bf95233e | 3157 | rif->f->ref_count++; |
4724ba56 | 3158 | |
4724ba56 | 3159 | return 0; |
03ea01e9 | 3160 | |
4aafc368 IS |
3161 | err_port_vp_mode_trans: |
3162 | mlxsw_sp_port->nr_port_vid_map--; | |
7cbecf24 | 3163 | mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_BLOCKING); |
03ea01e9 | 3164 | err_port_vid_stp_set: |
7cbecf24 | 3165 | mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true); |
03ea01e9 IS |
3166 | err_port_vid_learning_set: |
3167 | if (rif->f->ref_count == 0) | |
1b8f09a0 | 3168 | mlxsw_sp_port_vlan_rif_sp_destroy(mlxsw_sp, rif); |
03ea01e9 | 3169 | return err; |
4724ba56 IS |
3170 | } |
3171 | ||
ce95e154 IS |
3172 | static void |
3173 | mlxsw_sp_port_vlan_rif_sp_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) | |
4724ba56 | 3174 | { |
ce95e154 | 3175 | struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; |
1b8f09a0 | 3176 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
7cbecf24 | 3177 | struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid; |
ce95e154 | 3178 | u16 vid = mlxsw_sp_port_vlan->vid; |
ce95e154 | 3179 | |
7cbecf24 IS |
3180 | fid->ref_count--; |
3181 | mlxsw_sp_port_vlan->fid = NULL; | |
4aafc368 | 3182 | |
4aafc368 IS |
3183 | if (mlxsw_sp_port->nr_port_vid_map == 1) |
3184 | mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port); | |
3185 | mlxsw_sp_port->nr_port_vid_map--; | |
7cbecf24 IS |
3186 | mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_BLOCKING); |
3187 | mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true); | |
4aafc368 | 3188 | |
7cbecf24 | 3189 | if (fid->ref_count == 0) |
1b8f09a0 | 3190 | mlxsw_sp_port_vlan_rif_sp_destroy(mlxsw_sp, fid->rif); |
4724ba56 IS |
3191 | } |
3192 | ||
7cbecf24 IS |
3193 | static int mlxsw_sp_inetaddr_port_vlan_event(struct net_device *l3_dev, |
3194 | struct net_device *port_dev, | |
3195 | unsigned long event, u16 vid) | |
4724ba56 IS |
3196 | { |
3197 | struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev); | |
ce95e154 | 3198 | struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; |
4724ba56 | 3199 | |
ce95e154 | 3200 | mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); |
7cbecf24 IS |
3201 | if (WARN_ON(!mlxsw_sp_port_vlan)) |
3202 | return -EINVAL; | |
4724ba56 IS |
3203 | |
3204 | switch (event) { | |
3205 | case NETDEV_UP: | |
7cbecf24 IS |
3206 | return mlxsw_sp_port_vlan_rif_sp_join(mlxsw_sp_port_vlan, |
3207 | l3_dev); | |
4724ba56 | 3208 | case NETDEV_DOWN: |
ce95e154 | 3209 | mlxsw_sp_port_vlan_rif_sp_leave(mlxsw_sp_port_vlan); |
4724ba56 IS |
3210 | break; |
3211 | } | |
3212 | ||
3213 | return 0; | |
3214 | } | |
3215 | ||
3216 | static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev, | |
3217 | unsigned long event) | |
3218 | { | |
2b94e58d JP |
3219 | if (netif_is_bridge_port(port_dev) || |
3220 | netif_is_lag_port(port_dev) || | |
3221 | netif_is_ovs_port(port_dev)) | |
4724ba56 IS |
3222 | return 0; |
3223 | ||
7cbecf24 | 3224 | return mlxsw_sp_inetaddr_port_vlan_event(port_dev, port_dev, event, 1); |
4724ba56 IS |
3225 | } |
3226 | ||
3227 | static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev, | |
3228 | struct net_device *lag_dev, | |
3229 | unsigned long event, u16 vid) | |
3230 | { | |
3231 | struct net_device *port_dev; | |
3232 | struct list_head *iter; | |
3233 | int err; | |
3234 | ||
3235 | netdev_for_each_lower_dev(lag_dev, port_dev, iter) { | |
3236 | if (mlxsw_sp_port_dev_check(port_dev)) { | |
7cbecf24 IS |
3237 | err = mlxsw_sp_inetaddr_port_vlan_event(l3_dev, |
3238 | port_dev, | |
3239 | event, vid); | |
4724ba56 IS |
3240 | if (err) |
3241 | return err; | |
3242 | } | |
3243 | } | |
3244 | ||
3245 | return 0; | |
3246 | } | |
3247 | ||
3248 | static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev, | |
3249 | unsigned long event) | |
3250 | { | |
3251 | if (netif_is_bridge_port(lag_dev)) | |
3252 | return 0; | |
3253 | ||
3254 | return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1); | |
3255 | } | |
3256 | ||
3257 | static struct mlxsw_sp_fid *mlxsw_sp_bridge_fid_get(struct mlxsw_sp *mlxsw_sp, | |
3258 | struct net_device *l3_dev) | |
3259 | { | |
ed9ddd3a IS |
3260 | struct mlxsw_sp_fid *fid; |
3261 | u16 fid_index; | |
4724ba56 IS |
3262 | |
3263 | if (is_vlan_dev(l3_dev)) | |
ed9ddd3a | 3264 | fid_index = vlan_dev_vlan_id(l3_dev); |
c57529e1 | 3265 | else if (br_vlan_enabled(l3_dev)) |
ed9ddd3a | 3266 | fid_index = 1; |
4724ba56 IS |
3267 | else |
3268 | return mlxsw_sp_vfid_find(mlxsw_sp, l3_dev); | |
3269 | ||
ed9ddd3a IS |
3270 | fid = mlxsw_sp_fid_find(mlxsw_sp, fid_index); |
3271 | if (fid) | |
3272 | return fid; | |
3273 | ||
3274 | fid = mlxsw_sp_fid_create(mlxsw_sp, fid_index); | |
3275 | if (IS_ERR(fid)) | |
3276 | return NULL; | |
3277 | return fid; | |
4724ba56 IS |
3278 | } |
3279 | ||
5ec2ee7d IS |
3280 | static u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp) |
3281 | { | |
3282 | return mlxsw_core_max_ports(mlxsw_sp->core) + 1; | |
3283 | } | |
3284 | ||
4724ba56 IS |
3285 | static enum mlxsw_flood_table_type mlxsw_sp_flood_table_type_get(u16 fid) |
3286 | { | |
3287 | return mlxsw_sp_fid_is_vfid(fid) ? MLXSW_REG_SFGC_TABLE_TYPE_FID : | |
3288 | MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST; | |
3289 | } | |
3290 | ||
3291 | static u16 mlxsw_sp_flood_table_index_get(u16 fid) | |
3292 | { | |
3293 | return mlxsw_sp_fid_is_vfid(fid) ? mlxsw_sp_fid_to_vfid(fid) : fid; | |
3294 | } | |
3295 | ||
3296 | static int mlxsw_sp_router_port_flood_set(struct mlxsw_sp *mlxsw_sp, u16 fid, | |
3297 | bool set) | |
3298 | { | |
5ec2ee7d | 3299 | u8 router_port = mlxsw_sp_router_port(mlxsw_sp); |
4724ba56 IS |
3300 | enum mlxsw_flood_table_type table_type; |
3301 | char *sftr_pl; | |
3302 | u16 index; | |
3303 | int err; | |
3304 | ||
3305 | sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL); | |
3306 | if (!sftr_pl) | |
3307 | return -ENOMEM; | |
3308 | ||
3309 | table_type = mlxsw_sp_flood_table_type_get(fid); | |
3310 | index = mlxsw_sp_flood_table_index_get(fid); | |
3311 | mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BC, index, table_type, | |
5ec2ee7d | 3312 | 1, router_port, set); |
4724ba56 IS |
3313 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); |
3314 | ||
3315 | kfree(sftr_pl); | |
3316 | return err; | |
3317 | } | |
3318 | ||
3319 | static enum mlxsw_reg_ritr_if_type mlxsw_sp_rif_type_get(u16 fid) | |
3320 | { | |
3321 | if (mlxsw_sp_fid_is_vfid(fid)) | |
3322 | return MLXSW_REG_RITR_FID_IF; | |
3323 | else | |
3324 | return MLXSW_REG_RITR_VLAN_IF; | |
3325 | } | |
3326 | ||
ab01ae91 IS |
3327 | static int mlxsw_sp_rif_bridge_op(struct mlxsw_sp *mlxsw_sp, |
3328 | const struct mlxsw_sp_rif *rif, bool create) | |
4724ba56 IS |
3329 | { |
3330 | enum mlxsw_reg_ritr_if_type rif_type; | |
3331 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
3332 | ||
ab01ae91 IS |
3333 | rif_type = mlxsw_sp_rif_type_get(rif->f->fid); |
3334 | mlxsw_reg_ritr_pack(ritr_pl, create, rif_type, rif->rif_index, | |
3335 | rif->vr_id, rif->dev->mtu, rif->dev->dev_addr); | |
3336 | mlxsw_reg_ritr_fid_set(ritr_pl, rif_type, rif->f->fid); | |
4724ba56 IS |
3337 | |
3338 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
3339 | } | |
3340 | ||
3341 | static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp, | |
3342 | struct net_device *l3_dev, | |
3343 | struct mlxsw_sp_fid *f) | |
3344 | { | |
57837885 | 3345 | u32 tb_id = l3mdev_fib_table(l3_dev); |
bf95233e | 3346 | struct mlxsw_sp_rif *rif; |
6913229e | 3347 | struct mlxsw_sp_vr *vr; |
bf95233e | 3348 | u16 rif_index; |
4724ba56 IS |
3349 | int err; |
3350 | ||
57837885 | 3351 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN); |
6913229e IS |
3352 | if (IS_ERR(vr)) |
3353 | return PTR_ERR(vr); | |
3354 | ||
c9ec53f0 IS |
3355 | rif_index = mlxsw_sp_avail_rif_get(mlxsw_sp); |
3356 | if (rif_index == MLXSW_SP_INVALID_INDEX_RIF) { | |
3357 | err = -ERANGE; | |
3358 | goto err_avail_rif_get; | |
3359 | } | |
3360 | ||
4d93ceeb | 3361 | rif = mlxsw_sp_rif_alloc(rif_index, vr->id, l3_dev, f, false); |
a13a594d IS |
3362 | if (!rif) { |
3363 | err = -ENOMEM; | |
3364 | goto err_rif_alloc; | |
3365 | } | |
3366 | ||
ab01ae91 | 3367 | err = mlxsw_sp_rif_bridge_op(mlxsw_sp, rif, true); |
4724ba56 IS |
3368 | if (err) |
3369 | goto err_rif_bridge_op; | |
3370 | ||
8e3482d6 IS |
3371 | err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true); |
3372 | if (err) | |
3373 | goto err_port_flood_set; | |
3374 | ||
4724ba56 IS |
3375 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, true); |
3376 | if (err) | |
3377 | goto err_rif_fdb_op; | |
3378 | ||
bf95233e | 3379 | f->rif = rif; |
5f9efffb | 3380 | mlxsw_sp->router->rifs[rif_index] = rif; |
6913229e | 3381 | vr->rif_count++; |
4724ba56 | 3382 | |
bf95233e | 3383 | netdev_dbg(l3_dev, "RIF=%d created\n", rif_index); |
4724ba56 IS |
3384 | |
3385 | return 0; | |
3386 | ||
4724ba56 | 3387 | err_rif_fdb_op: |
8e3482d6 IS |
3388 | mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); |
3389 | err_port_flood_set: | |
ab01ae91 | 3390 | mlxsw_sp_rif_bridge_op(mlxsw_sp, rif, false); |
4724ba56 | 3391 | err_rif_bridge_op: |
a13a594d IS |
3392 | kfree(rif); |
3393 | err_rif_alloc: | |
c9ec53f0 | 3394 | err_avail_rif_get: |
6913229e | 3395 | mlxsw_sp_vr_put(vr); |
4724ba56 IS |
3396 | return err; |
3397 | } | |
3398 | ||
3399 | void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp, | |
bf95233e | 3400 | struct mlxsw_sp_rif *rif) |
4724ba56 | 3401 | { |
9011b677 | 3402 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[rif->vr_id]; |
bf95233e AS |
3403 | struct net_device *l3_dev = rif->dev; |
3404 | struct mlxsw_sp_fid *f = rif->f; | |
3405 | u16 rif_index = rif->rif_index; | |
4724ba56 | 3406 | |
bf95233e | 3407 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif); |
4724ba56 | 3408 | |
6913229e | 3409 | vr->rif_count--; |
5f9efffb | 3410 | mlxsw_sp->router->rifs[rif_index] = NULL; |
bf95233e | 3411 | f->rif = NULL; |
4724ba56 | 3412 | |
4724ba56 IS |
3413 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false); |
3414 | ||
8e3482d6 IS |
3415 | mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); |
3416 | ||
ab01ae91 | 3417 | mlxsw_sp_rif_bridge_op(mlxsw_sp, rif, false); |
4724ba56 | 3418 | |
a13a594d IS |
3419 | kfree(rif); |
3420 | ||
6913229e IS |
3421 | mlxsw_sp_vr_put(vr); |
3422 | ||
bf95233e | 3423 | netdev_dbg(l3_dev, "RIF=%d destroyed\n", rif_index); |
4724ba56 IS |
3424 | } |
3425 | ||
3426 | static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev, | |
3427 | struct net_device *br_dev, | |
3428 | unsigned long event) | |
3429 | { | |
3430 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); | |
3431 | struct mlxsw_sp_fid *f; | |
3432 | ||
3433 | /* FID can either be an actual FID if the L3 device is the | |
3434 | * VLAN-aware bridge or a VLAN device on top. Otherwise, the | |
3435 | * L3 device is a VLAN-unaware bridge and we get a vFID. | |
3436 | */ | |
3437 | f = mlxsw_sp_bridge_fid_get(mlxsw_sp, l3_dev); | |
3438 | if (WARN_ON(!f)) | |
3439 | return -EINVAL; | |
3440 | ||
3441 | switch (event) { | |
3442 | case NETDEV_UP: | |
3443 | return mlxsw_sp_rif_bridge_create(mlxsw_sp, l3_dev, f); | |
3444 | case NETDEV_DOWN: | |
bf95233e | 3445 | mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->rif); |
4724ba56 IS |
3446 | break; |
3447 | } | |
3448 | ||
3449 | return 0; | |
3450 | } | |
3451 | ||
3452 | static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev, | |
3453 | unsigned long event) | |
3454 | { | |
3455 | struct net_device *real_dev = vlan_dev_real_dev(vlan_dev); | |
4724ba56 IS |
3456 | u16 vid = vlan_dev_vlan_id(vlan_dev); |
3457 | ||
3458 | if (mlxsw_sp_port_dev_check(real_dev)) | |
7cbecf24 IS |
3459 | return mlxsw_sp_inetaddr_port_vlan_event(vlan_dev, real_dev, |
3460 | event, vid); | |
4724ba56 IS |
3461 | else if (netif_is_lag_master(real_dev)) |
3462 | return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event, | |
3463 | vid); | |
c57529e1 | 3464 | else if (netif_is_bridge_master(real_dev) && br_vlan_enabled(real_dev)) |
4724ba56 IS |
3465 | return mlxsw_sp_inetaddr_bridge_event(vlan_dev, real_dev, |
3466 | event); | |
3467 | ||
3468 | return 0; | |
3469 | } | |
3470 | ||
b1e45526 IS |
3471 | static int __mlxsw_sp_inetaddr_event(struct net_device *dev, |
3472 | unsigned long event) | |
3473 | { | |
3474 | if (mlxsw_sp_port_dev_check(dev)) | |
3475 | return mlxsw_sp_inetaddr_port_event(dev, event); | |
3476 | else if (netif_is_lag_master(dev)) | |
3477 | return mlxsw_sp_inetaddr_lag_event(dev, event); | |
3478 | else if (netif_is_bridge_master(dev)) | |
3479 | return mlxsw_sp_inetaddr_bridge_event(dev, dev, event); | |
3480 | else if (is_vlan_dev(dev)) | |
3481 | return mlxsw_sp_inetaddr_vlan_event(dev, event); | |
3482 | else | |
3483 | return 0; | |
3484 | } | |
3485 | ||
4724ba56 IS |
3486 | int mlxsw_sp_inetaddr_event(struct notifier_block *unused, |
3487 | unsigned long event, void *ptr) | |
3488 | { | |
3489 | struct in_ifaddr *ifa = (struct in_ifaddr *) ptr; | |
3490 | struct net_device *dev = ifa->ifa_dev->dev; | |
3491 | struct mlxsw_sp *mlxsw_sp; | |
bf95233e | 3492 | struct mlxsw_sp_rif *rif; |
4724ba56 IS |
3493 | int err = 0; |
3494 | ||
3495 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
3496 | if (!mlxsw_sp) | |
3497 | goto out; | |
3498 | ||
bf95233e AS |
3499 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
3500 | if (!mlxsw_sp_rif_should_config(rif, ifa->ifa_dev, event)) | |
4724ba56 IS |
3501 | goto out; |
3502 | ||
b1e45526 | 3503 | err = __mlxsw_sp_inetaddr_event(dev, event); |
4724ba56 IS |
3504 | out: |
3505 | return notifier_from_errno(err); | |
3506 | } | |
3507 | ||
bf95233e | 3508 | static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, |
4724ba56 IS |
3509 | const char *mac, int mtu) |
3510 | { | |
3511 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
3512 | int err; | |
3513 | ||
bf95233e | 3514 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); |
4724ba56 IS |
3515 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); |
3516 | if (err) | |
3517 | return err; | |
3518 | ||
3519 | mlxsw_reg_ritr_mtu_set(ritr_pl, mtu); | |
3520 | mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac); | |
3521 | mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE); | |
3522 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
3523 | } | |
3524 | ||
3525 | int mlxsw_sp_netdevice_router_port_event(struct net_device *dev) | |
3526 | { | |
3527 | struct mlxsw_sp *mlxsw_sp; | |
bf95233e | 3528 | struct mlxsw_sp_rif *rif; |
4724ba56 IS |
3529 | int err; |
3530 | ||
3531 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
3532 | if (!mlxsw_sp) | |
3533 | return 0; | |
3534 | ||
bf95233e AS |
3535 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
3536 | if (!rif) | |
4724ba56 IS |
3537 | return 0; |
3538 | ||
bf95233e | 3539 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, rif->f->fid, false); |
4724ba56 IS |
3540 | if (err) |
3541 | return err; | |
3542 | ||
bf95233e AS |
3543 | err = mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, dev->dev_addr, |
3544 | dev->mtu); | |
4724ba56 IS |
3545 | if (err) |
3546 | goto err_rif_edit; | |
3547 | ||
bf95233e | 3548 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, rif->f->fid, true); |
4724ba56 IS |
3549 | if (err) |
3550 | goto err_rif_fdb_op; | |
3551 | ||
bf95233e AS |
3552 | ether_addr_copy(rif->addr, dev->dev_addr); |
3553 | rif->mtu = dev->mtu; | |
4724ba56 | 3554 | |
bf95233e | 3555 | netdev_dbg(dev, "Updated RIF=%d\n", rif->rif_index); |
4724ba56 IS |
3556 | |
3557 | return 0; | |
3558 | ||
3559 | err_rif_fdb_op: | |
bf95233e | 3560 | mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, rif->addr, rif->mtu); |
4724ba56 | 3561 | err_rif_edit: |
bf95233e | 3562 | mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, rif->f->fid, true); |
4724ba56 IS |
3563 | return err; |
3564 | } | |
3565 | ||
b1e45526 IS |
3566 | static int mlxsw_sp_port_vrf_join(struct mlxsw_sp *mlxsw_sp, |
3567 | struct net_device *l3_dev) | |
7179eb5a | 3568 | { |
b1e45526 | 3569 | struct mlxsw_sp_rif *rif; |
7179eb5a | 3570 | |
b1e45526 IS |
3571 | /* If netdev is already associated with a RIF, then we need to |
3572 | * destroy it and create a new one with the new virtual router ID. | |
7179eb5a | 3573 | */ |
b1e45526 IS |
3574 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
3575 | if (rif) | |
3576 | __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN); | |
7179eb5a | 3577 | |
b1e45526 | 3578 | return __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_UP); |
7179eb5a IS |
3579 | } |
3580 | ||
b1e45526 IS |
3581 | static void mlxsw_sp_port_vrf_leave(struct mlxsw_sp *mlxsw_sp, |
3582 | struct net_device *l3_dev) | |
7179eb5a | 3583 | { |
b1e45526 | 3584 | struct mlxsw_sp_rif *rif; |
7179eb5a | 3585 | |
b1e45526 IS |
3586 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
3587 | if (!rif) | |
7179eb5a | 3588 | return; |
b1e45526 | 3589 | __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN); |
7179eb5a IS |
3590 | } |
3591 | ||
b1e45526 IS |
3592 | int mlxsw_sp_netdevice_vrf_event(struct net_device *l3_dev, unsigned long event, |
3593 | struct netdev_notifier_changeupper_info *info) | |
3d70e458 | 3594 | { |
b1e45526 IS |
3595 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); |
3596 | int err = 0; | |
3d70e458 | 3597 | |
b1e45526 IS |
3598 | if (!mlxsw_sp) |
3599 | return 0; | |
3d70e458 | 3600 | |
b1e45526 IS |
3601 | switch (event) { |
3602 | case NETDEV_PRECHANGEUPPER: | |
3603 | return 0; | |
3604 | case NETDEV_CHANGEUPPER: | |
3605 | if (info->linking) | |
3606 | err = mlxsw_sp_port_vrf_join(mlxsw_sp, l3_dev); | |
3607 | else | |
3608 | mlxsw_sp_port_vrf_leave(mlxsw_sp, l3_dev); | |
3609 | break; | |
3610 | } | |
3d70e458 | 3611 | |
b1e45526 | 3612 | return err; |
3d70e458 IS |
3613 | } |
3614 | ||
348b8fc3 IS |
3615 | static int mlxsw_sp_rifs_init(struct mlxsw_sp *mlxsw_sp) |
3616 | { | |
3617 | u64 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); | |
3618 | ||
3619 | mlxsw_sp->router->rifs = kcalloc(max_rifs, | |
3620 | sizeof(struct mlxsw_sp_rif *), | |
3621 | GFP_KERNEL); | |
3622 | if (!mlxsw_sp->router->rifs) | |
3623 | return -ENOMEM; | |
3624 | return 0; | |
3625 | } | |
3626 | ||
3627 | static void mlxsw_sp_rifs_fini(struct mlxsw_sp *mlxsw_sp) | |
3628 | { | |
3629 | int i; | |
3630 | ||
3631 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
3632 | WARN_ON_ONCE(mlxsw_sp->router->rifs[i]); | |
3633 | ||
3634 | kfree(mlxsw_sp->router->rifs); | |
3635 | } | |
3636 | ||
c3852ef7 IS |
3637 | static void mlxsw_sp_router_fib_dump_flush(struct notifier_block *nb) |
3638 | { | |
7e39d115 | 3639 | struct mlxsw_sp_router *router; |
c3852ef7 IS |
3640 | |
3641 | /* Flush pending FIB notifications and then flush the device's | |
3642 | * table before requesting another dump. The FIB notification | |
3643 | * block is unregistered, so no need to take RTNL. | |
3644 | */ | |
3645 | mlxsw_core_flush_owq(); | |
7e39d115 IS |
3646 | router = container_of(nb, struct mlxsw_sp_router, fib_nb); |
3647 | mlxsw_sp_router_fib_flush(router->mlxsw_sp); | |
c3852ef7 IS |
3648 | } |
3649 | ||
4724ba56 IS |
3650 | static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
3651 | { | |
3652 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
3653 | u64 max_rifs; | |
3654 | int err; | |
3655 | ||
3656 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS)) | |
3657 | return -EIO; | |
4724ba56 | 3658 | max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); |
4724ba56 IS |
3659 | |
3660 | mlxsw_reg_rgcr_pack(rgcr_pl, true); | |
3661 | mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs); | |
3662 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
3663 | if (err) | |
348b8fc3 | 3664 | return err; |
4724ba56 | 3665 | return 0; |
4724ba56 IS |
3666 | } |
3667 | ||
3668 | static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
3669 | { | |
3670 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
4724ba56 IS |
3671 | |
3672 | mlxsw_reg_rgcr_pack(rgcr_pl, false); | |
3673 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
4724ba56 IS |
3674 | } |
3675 | ||
b45f64d1 JP |
3676 | int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
3677 | { | |
9011b677 | 3678 | struct mlxsw_sp_router *router; |
b45f64d1 JP |
3679 | int err; |
3680 | ||
9011b677 IS |
3681 | router = kzalloc(sizeof(*mlxsw_sp->router), GFP_KERNEL); |
3682 | if (!router) | |
3683 | return -ENOMEM; | |
3684 | mlxsw_sp->router = router; | |
3685 | router->mlxsw_sp = mlxsw_sp; | |
3686 | ||
3687 | INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_neighs_list); | |
b45f64d1 JP |
3688 | err = __mlxsw_sp_router_init(mlxsw_sp); |
3689 | if (err) | |
9011b677 | 3690 | goto err_router_init; |
b45f64d1 | 3691 | |
348b8fc3 IS |
3692 | err = mlxsw_sp_rifs_init(mlxsw_sp); |
3693 | if (err) | |
3694 | goto err_rifs_init; | |
3695 | ||
9011b677 | 3696 | err = rhashtable_init(&mlxsw_sp->router->nexthop_ht, |
c53b8e1b IS |
3697 | &mlxsw_sp_nexthop_ht_params); |
3698 | if (err) | |
3699 | goto err_nexthop_ht_init; | |
3700 | ||
9011b677 | 3701 | err = rhashtable_init(&mlxsw_sp->router->nexthop_group_ht, |
e9ad5e7d IS |
3702 | &mlxsw_sp_nexthop_group_ht_params); |
3703 | if (err) | |
3704 | goto err_nexthop_group_ht_init; | |
3705 | ||
8494ab06 IS |
3706 | err = mlxsw_sp_lpm_init(mlxsw_sp); |
3707 | if (err) | |
3708 | goto err_lpm_init; | |
3709 | ||
b45f64d1 JP |
3710 | err = mlxsw_sp_vrs_init(mlxsw_sp); |
3711 | if (err) | |
3712 | goto err_vrs_init; | |
3713 | ||
8c9583a8 | 3714 | err = mlxsw_sp_neigh_init(mlxsw_sp); |
b45f64d1 JP |
3715 | if (err) |
3716 | goto err_neigh_init; | |
3717 | ||
7e39d115 IS |
3718 | mlxsw_sp->router->fib_nb.notifier_call = mlxsw_sp_router_fib_event; |
3719 | err = register_fib_notifier(&mlxsw_sp->router->fib_nb, | |
c3852ef7 IS |
3720 | mlxsw_sp_router_fib_dump_flush); |
3721 | if (err) | |
3722 | goto err_register_fib_notifier; | |
3723 | ||
b45f64d1 JP |
3724 | return 0; |
3725 | ||
c3852ef7 IS |
3726 | err_register_fib_notifier: |
3727 | mlxsw_sp_neigh_fini(mlxsw_sp); | |
b45f64d1 JP |
3728 | err_neigh_init: |
3729 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
3730 | err_vrs_init: | |
8494ab06 IS |
3731 | mlxsw_sp_lpm_fini(mlxsw_sp); |
3732 | err_lpm_init: | |
9011b677 | 3733 | rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht); |
e9ad5e7d | 3734 | err_nexthop_group_ht_init: |
9011b677 | 3735 | rhashtable_destroy(&mlxsw_sp->router->nexthop_ht); |
c53b8e1b | 3736 | err_nexthop_ht_init: |
348b8fc3 IS |
3737 | mlxsw_sp_rifs_fini(mlxsw_sp); |
3738 | err_rifs_init: | |
b45f64d1 | 3739 | __mlxsw_sp_router_fini(mlxsw_sp); |
9011b677 IS |
3740 | err_router_init: |
3741 | kfree(mlxsw_sp->router); | |
b45f64d1 JP |
3742 | return err; |
3743 | } | |
3744 | ||
3745 | void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
3746 | { | |
7e39d115 | 3747 | unregister_fib_notifier(&mlxsw_sp->router->fib_nb); |
b45f64d1 JP |
3748 | mlxsw_sp_neigh_fini(mlxsw_sp); |
3749 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
8494ab06 | 3750 | mlxsw_sp_lpm_fini(mlxsw_sp); |
9011b677 IS |
3751 | rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht); |
3752 | rhashtable_destroy(&mlxsw_sp->router->nexthop_ht); | |
348b8fc3 | 3753 | mlxsw_sp_rifs_fini(mlxsw_sp); |
b45f64d1 | 3754 | __mlxsw_sp_router_fini(mlxsw_sp); |
9011b677 | 3755 | kfree(mlxsw_sp->router); |
b45f64d1 | 3756 | } |