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>
6 * Copyright (c) 2016 Yotam Gigi <yotamg@mellanox.com>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
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.
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.
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.
37 #include <linux/kernel.h>
38 #include <linux/types.h>
39 #include <linux/rhashtable.h>
40 #include <linux/bitops.h>
41 #include <linux/in6.h>
42 #include <linux/notifier.h>
43 #include <linux/inetdevice.h>
44 #include <linux/netdevice.h>
45 #include <linux/if_bridge.h>
46 #include <net/netevent.h>
47 #include <net/neighbour.h>
49 #include <net/ip_fib.h>
50 #include <net/fib_rules.h>
51 #include <net/l3mdev.h>
56 #include "spectrum_cnt.h"
57 #include "spectrum_dpipe.h"
58 #include "spectrum_router.h"
61 struct mlxsw_sp_lpm_tree;
62 struct mlxsw_sp_rif_ops;
64 struct mlxsw_sp_router {
65 struct mlxsw_sp *mlxsw_sp;
66 struct mlxsw_sp_rif **rifs;
67 struct mlxsw_sp_vr *vrs;
68 struct rhashtable neigh_ht;
69 struct rhashtable nexthop_group_ht;
70 struct rhashtable nexthop_ht;
72 struct mlxsw_sp_lpm_tree *trees;
73 unsigned int tree_count;
76 struct delayed_work dw;
77 unsigned long interval; /* ms */
79 struct delayed_work nexthop_probe_dw;
80 #define MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL 5000 /* ms */
81 struct list_head nexthop_neighs_list;
83 struct notifier_block fib_nb;
84 const struct mlxsw_sp_rif_ops **rif_ops_arr;
88 struct list_head nexthop_list;
89 struct list_head neigh_list;
90 struct net_device *dev;
91 struct mlxsw_sp_fid *fid;
92 unsigned char addr[ETH_ALEN];
96 const struct mlxsw_sp_rif_ops *ops;
97 struct mlxsw_sp *mlxsw_sp;
99 unsigned int counter_ingress;
100 bool counter_ingress_valid;
101 unsigned int counter_egress;
102 bool counter_egress_valid;
105 struct mlxsw_sp_rif_params {
106 struct net_device *dev;
115 struct mlxsw_sp_rif_subport {
116 struct mlxsw_sp_rif common;
125 struct mlxsw_sp_rif_ops {
126 enum mlxsw_sp_rif_type type;
129 void (*setup)(struct mlxsw_sp_rif *rif,
130 const struct mlxsw_sp_rif_params *params);
131 int (*configure)(struct mlxsw_sp_rif *rif);
132 void (*deconfigure)(struct mlxsw_sp_rif *rif);
133 struct mlxsw_sp_fid * (*fid_get)(struct mlxsw_sp_rif *rif);
136 static unsigned int *
137 mlxsw_sp_rif_p_counter_get(struct mlxsw_sp_rif *rif,
138 enum mlxsw_sp_rif_counter_dir dir)
141 case MLXSW_SP_RIF_COUNTER_EGRESS:
142 return &rif->counter_egress;
143 case MLXSW_SP_RIF_COUNTER_INGRESS:
144 return &rif->counter_ingress;
150 mlxsw_sp_rif_counter_valid_get(struct mlxsw_sp_rif *rif,
151 enum mlxsw_sp_rif_counter_dir dir)
154 case MLXSW_SP_RIF_COUNTER_EGRESS:
155 return rif->counter_egress_valid;
156 case MLXSW_SP_RIF_COUNTER_INGRESS:
157 return rif->counter_ingress_valid;
163 mlxsw_sp_rif_counter_valid_set(struct mlxsw_sp_rif *rif,
164 enum mlxsw_sp_rif_counter_dir dir,
168 case MLXSW_SP_RIF_COUNTER_EGRESS:
169 rif->counter_egress_valid = valid;
171 case MLXSW_SP_RIF_COUNTER_INGRESS:
172 rif->counter_ingress_valid = valid;
177 static int mlxsw_sp_rif_counter_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index,
178 unsigned int counter_index, bool enable,
179 enum mlxsw_sp_rif_counter_dir dir)
181 char ritr_pl[MLXSW_REG_RITR_LEN];
182 bool is_egress = false;
185 if (dir == MLXSW_SP_RIF_COUNTER_EGRESS)
187 mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index);
188 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
192 mlxsw_reg_ritr_counter_pack(ritr_pl, counter_index, enable,
194 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
197 int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp,
198 struct mlxsw_sp_rif *rif,
199 enum mlxsw_sp_rif_counter_dir dir, u64 *cnt)
201 char ricnt_pl[MLXSW_REG_RICNT_LEN];
202 unsigned int *p_counter_index;
206 valid = mlxsw_sp_rif_counter_valid_get(rif, dir);
210 p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir);
211 if (!p_counter_index)
213 mlxsw_reg_ricnt_pack(ricnt_pl, *p_counter_index,
214 MLXSW_REG_RICNT_OPCODE_NOP);
215 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl);
218 *cnt = mlxsw_reg_ricnt_good_unicast_packets_get(ricnt_pl);
222 static int mlxsw_sp_rif_counter_clear(struct mlxsw_sp *mlxsw_sp,
223 unsigned int counter_index)
225 char ricnt_pl[MLXSW_REG_RICNT_LEN];
227 mlxsw_reg_ricnt_pack(ricnt_pl, counter_index,
228 MLXSW_REG_RICNT_OPCODE_CLEAR);
229 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl);
232 int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp *mlxsw_sp,
233 struct mlxsw_sp_rif *rif,
234 enum mlxsw_sp_rif_counter_dir dir)
236 unsigned int *p_counter_index;
239 p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir);
240 if (!p_counter_index)
242 err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF,
247 err = mlxsw_sp_rif_counter_clear(mlxsw_sp, *p_counter_index);
249 goto err_counter_clear;
251 err = mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index,
252 *p_counter_index, true, dir);
254 goto err_counter_edit;
255 mlxsw_sp_rif_counter_valid_set(rif, dir, true);
260 mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF,
265 void mlxsw_sp_rif_counter_free(struct mlxsw_sp *mlxsw_sp,
266 struct mlxsw_sp_rif *rif,
267 enum mlxsw_sp_rif_counter_dir dir)
269 unsigned int *p_counter_index;
271 if (!mlxsw_sp_rif_counter_valid_get(rif, dir))
274 p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir);
275 if (WARN_ON(!p_counter_index))
277 mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index,
278 *p_counter_index, false, dir);
279 mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF,
281 mlxsw_sp_rif_counter_valid_set(rif, dir, false);
284 static void mlxsw_sp_rif_counters_alloc(struct mlxsw_sp_rif *rif)
286 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
287 struct devlink *devlink;
289 devlink = priv_to_devlink(mlxsw_sp->core);
290 if (!devlink_dpipe_table_counter_enabled(devlink,
291 MLXSW_SP_DPIPE_TABLE_NAME_ERIF))
293 mlxsw_sp_rif_counter_alloc(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_EGRESS);
296 static void mlxsw_sp_rif_counters_free(struct mlxsw_sp_rif *rif)
298 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
300 mlxsw_sp_rif_counter_free(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_EGRESS);
303 static struct mlxsw_sp_rif *
304 mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp,
305 const struct net_device *dev);
307 #define MLXSW_SP_PREFIX_COUNT (sizeof(struct in6_addr) * BITS_PER_BYTE)
309 struct mlxsw_sp_prefix_usage {
310 DECLARE_BITMAP(b, MLXSW_SP_PREFIX_COUNT);
313 #define mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) \
314 for_each_set_bit(prefix, (prefix_usage)->b, MLXSW_SP_PREFIX_COUNT)
317 mlxsw_sp_prefix_usage_subset(struct mlxsw_sp_prefix_usage *prefix_usage1,
318 struct mlxsw_sp_prefix_usage *prefix_usage2)
320 unsigned char prefix;
322 mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage1) {
323 if (!test_bit(prefix, prefix_usage2->b))
330 mlxsw_sp_prefix_usage_eq(struct mlxsw_sp_prefix_usage *prefix_usage1,
331 struct mlxsw_sp_prefix_usage *prefix_usage2)
333 return !memcmp(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1));
337 mlxsw_sp_prefix_usage_none(struct mlxsw_sp_prefix_usage *prefix_usage)
339 struct mlxsw_sp_prefix_usage prefix_usage_none = {{ 0 } };
341 return mlxsw_sp_prefix_usage_eq(prefix_usage, &prefix_usage_none);
345 mlxsw_sp_prefix_usage_cpy(struct mlxsw_sp_prefix_usage *prefix_usage1,
346 struct mlxsw_sp_prefix_usage *prefix_usage2)
348 memcpy(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1));
352 mlxsw_sp_prefix_usage_set(struct mlxsw_sp_prefix_usage *prefix_usage,
353 unsigned char prefix_len)
355 set_bit(prefix_len, prefix_usage->b);
359 mlxsw_sp_prefix_usage_clear(struct mlxsw_sp_prefix_usage *prefix_usage,
360 unsigned char prefix_len)
362 clear_bit(prefix_len, prefix_usage->b);
365 struct mlxsw_sp_fib_key {
366 unsigned char addr[sizeof(struct in6_addr)];
367 unsigned char prefix_len;
370 enum mlxsw_sp_fib_entry_type {
371 MLXSW_SP_FIB_ENTRY_TYPE_REMOTE,
372 MLXSW_SP_FIB_ENTRY_TYPE_LOCAL,
373 MLXSW_SP_FIB_ENTRY_TYPE_TRAP,
376 struct mlxsw_sp_nexthop_group;
379 struct mlxsw_sp_fib_node {
380 struct list_head entry_list;
381 struct list_head list;
382 struct rhash_head ht_node;
383 struct mlxsw_sp_fib *fib;
384 struct mlxsw_sp_fib_key key;
387 struct mlxsw_sp_fib_entry_params {
394 struct mlxsw_sp_fib_entry {
395 struct list_head list;
396 struct mlxsw_sp_fib_node *fib_node;
397 enum mlxsw_sp_fib_entry_type type;
398 struct list_head nexthop_group_node;
399 struct mlxsw_sp_nexthop_group *nh_group;
400 struct mlxsw_sp_fib_entry_params params;
404 enum mlxsw_sp_l3proto {
405 MLXSW_SP_L3_PROTO_IPV4,
406 MLXSW_SP_L3_PROTO_IPV6,
409 struct mlxsw_sp_lpm_tree {
411 unsigned int ref_count;
412 enum mlxsw_sp_l3proto proto;
413 struct mlxsw_sp_prefix_usage prefix_usage;
416 struct mlxsw_sp_fib {
417 struct rhashtable ht;
418 struct list_head node_list;
419 struct mlxsw_sp_vr *vr;
420 struct mlxsw_sp_lpm_tree *lpm_tree;
421 unsigned long prefix_ref_count[MLXSW_SP_PREFIX_COUNT];
422 struct mlxsw_sp_prefix_usage prefix_usage;
423 enum mlxsw_sp_l3proto proto;
427 u16 id; /* virtual router ID */
428 u32 tb_id; /* kernel fib table id */
429 unsigned int rif_count;
430 struct mlxsw_sp_fib *fib4;
433 static const struct rhashtable_params mlxsw_sp_fib_ht_params;
435 static struct mlxsw_sp_fib *mlxsw_sp_fib_create(struct mlxsw_sp_vr *vr,
436 enum mlxsw_sp_l3proto proto)
438 struct mlxsw_sp_fib *fib;
441 fib = kzalloc(sizeof(*fib), GFP_KERNEL);
443 return ERR_PTR(-ENOMEM);
444 err = rhashtable_init(&fib->ht, &mlxsw_sp_fib_ht_params);
446 goto err_rhashtable_init;
447 INIT_LIST_HEAD(&fib->node_list);
457 static void mlxsw_sp_fib_destroy(struct mlxsw_sp_fib *fib)
459 WARN_ON(!list_empty(&fib->node_list));
460 WARN_ON(fib->lpm_tree);
461 rhashtable_destroy(&fib->ht);
465 static struct mlxsw_sp_lpm_tree *
466 mlxsw_sp_lpm_tree_find_unused(struct mlxsw_sp *mlxsw_sp)
468 static struct mlxsw_sp_lpm_tree *lpm_tree;
471 for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) {
472 lpm_tree = &mlxsw_sp->router->lpm.trees[i];
473 if (lpm_tree->ref_count == 0)
479 static int mlxsw_sp_lpm_tree_alloc(struct mlxsw_sp *mlxsw_sp,
480 struct mlxsw_sp_lpm_tree *lpm_tree)
482 char ralta_pl[MLXSW_REG_RALTA_LEN];
484 mlxsw_reg_ralta_pack(ralta_pl, true,
485 (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto,
487 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl);
490 static int mlxsw_sp_lpm_tree_free(struct mlxsw_sp *mlxsw_sp,
491 struct mlxsw_sp_lpm_tree *lpm_tree)
493 char ralta_pl[MLXSW_REG_RALTA_LEN];
495 mlxsw_reg_ralta_pack(ralta_pl, false,
496 (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto,
498 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl);
502 mlxsw_sp_lpm_tree_left_struct_set(struct mlxsw_sp *mlxsw_sp,
503 struct mlxsw_sp_prefix_usage *prefix_usage,
504 struct mlxsw_sp_lpm_tree *lpm_tree)
506 char ralst_pl[MLXSW_REG_RALST_LEN];
509 u8 last_prefix = MLXSW_REG_RALST_BIN_NO_CHILD;
511 mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage)
514 mlxsw_reg_ralst_pack(ralst_pl, root_bin, lpm_tree->id);
515 mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) {
518 mlxsw_reg_ralst_bin_pack(ralst_pl, prefix, last_prefix,
519 MLXSW_REG_RALST_BIN_NO_CHILD);
520 last_prefix = prefix;
522 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl);
525 static struct mlxsw_sp_lpm_tree *
526 mlxsw_sp_lpm_tree_create(struct mlxsw_sp *mlxsw_sp,
527 struct mlxsw_sp_prefix_usage *prefix_usage,
528 enum mlxsw_sp_l3proto proto)
530 struct mlxsw_sp_lpm_tree *lpm_tree;
533 lpm_tree = mlxsw_sp_lpm_tree_find_unused(mlxsw_sp);
535 return ERR_PTR(-EBUSY);
536 lpm_tree->proto = proto;
537 err = mlxsw_sp_lpm_tree_alloc(mlxsw_sp, lpm_tree);
541 err = mlxsw_sp_lpm_tree_left_struct_set(mlxsw_sp, prefix_usage,
544 goto err_left_struct_set;
545 memcpy(&lpm_tree->prefix_usage, prefix_usage,
546 sizeof(lpm_tree->prefix_usage));
550 mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree);
554 static int mlxsw_sp_lpm_tree_destroy(struct mlxsw_sp *mlxsw_sp,
555 struct mlxsw_sp_lpm_tree *lpm_tree)
557 return mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree);
560 static struct mlxsw_sp_lpm_tree *
561 mlxsw_sp_lpm_tree_get(struct mlxsw_sp *mlxsw_sp,
562 struct mlxsw_sp_prefix_usage *prefix_usage,
563 enum mlxsw_sp_l3proto proto)
565 struct mlxsw_sp_lpm_tree *lpm_tree;
568 for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) {
569 lpm_tree = &mlxsw_sp->router->lpm.trees[i];
570 if (lpm_tree->ref_count != 0 &&
571 lpm_tree->proto == proto &&
572 mlxsw_sp_prefix_usage_eq(&lpm_tree->prefix_usage,
576 lpm_tree = mlxsw_sp_lpm_tree_create(mlxsw_sp, prefix_usage,
578 if (IS_ERR(lpm_tree))
582 lpm_tree->ref_count++;
586 static int mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp,
587 struct mlxsw_sp_lpm_tree *lpm_tree)
589 if (--lpm_tree->ref_count == 0)
590 return mlxsw_sp_lpm_tree_destroy(mlxsw_sp, lpm_tree);
594 #define MLXSW_SP_LPM_TREE_MIN 1 /* tree 0 is reserved */
596 static int mlxsw_sp_lpm_init(struct mlxsw_sp *mlxsw_sp)
598 struct mlxsw_sp_lpm_tree *lpm_tree;
602 if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LPM_TREES))
605 max_trees = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LPM_TREES);
606 mlxsw_sp->router->lpm.tree_count = max_trees - MLXSW_SP_LPM_TREE_MIN;
607 mlxsw_sp->router->lpm.trees = kcalloc(mlxsw_sp->router->lpm.tree_count,
608 sizeof(struct mlxsw_sp_lpm_tree),
610 if (!mlxsw_sp->router->lpm.trees)
613 for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) {
614 lpm_tree = &mlxsw_sp->router->lpm.trees[i];
615 lpm_tree->id = i + MLXSW_SP_LPM_TREE_MIN;
621 static void mlxsw_sp_lpm_fini(struct mlxsw_sp *mlxsw_sp)
623 kfree(mlxsw_sp->router->lpm.trees);
626 static bool mlxsw_sp_vr_is_used(const struct mlxsw_sp_vr *vr)
631 static struct mlxsw_sp_vr *mlxsw_sp_vr_find_unused(struct mlxsw_sp *mlxsw_sp)
633 struct mlxsw_sp_vr *vr;
636 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
637 vr = &mlxsw_sp->router->vrs[i];
638 if (!mlxsw_sp_vr_is_used(vr))
644 static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp,
645 const struct mlxsw_sp_fib *fib)
647 char raltb_pl[MLXSW_REG_RALTB_LEN];
649 mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id,
650 (enum mlxsw_reg_ralxx_protocol) fib->proto,
652 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl);
655 static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp,
656 const struct mlxsw_sp_fib *fib)
658 char raltb_pl[MLXSW_REG_RALTB_LEN];
660 /* Bind to tree 0 which is default */
661 mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id,
662 (enum mlxsw_reg_ralxx_protocol) fib->proto, 0);
663 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl);
666 static u32 mlxsw_sp_fix_tb_id(u32 tb_id)
668 /* For our purpose, squash main and local table into one */
669 if (tb_id == RT_TABLE_LOCAL)
670 tb_id = RT_TABLE_MAIN;
674 static struct mlxsw_sp_vr *mlxsw_sp_vr_find(struct mlxsw_sp *mlxsw_sp,
677 struct mlxsw_sp_vr *vr;
680 tb_id = mlxsw_sp_fix_tb_id(tb_id);
682 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
683 vr = &mlxsw_sp->router->vrs[i];
684 if (mlxsw_sp_vr_is_used(vr) && vr->tb_id == tb_id)
690 static struct mlxsw_sp_fib *mlxsw_sp_vr_fib(const struct mlxsw_sp_vr *vr,
691 enum mlxsw_sp_l3proto proto)
694 case MLXSW_SP_L3_PROTO_IPV4:
696 case MLXSW_SP_L3_PROTO_IPV6:
702 static struct mlxsw_sp_vr *mlxsw_sp_vr_create(struct mlxsw_sp *mlxsw_sp,
705 struct mlxsw_sp_vr *vr;
707 vr = mlxsw_sp_vr_find_unused(mlxsw_sp);
709 return ERR_PTR(-EBUSY);
710 vr->fib4 = mlxsw_sp_fib_create(vr, MLXSW_SP_L3_PROTO_IPV4);
711 if (IS_ERR(vr->fib4))
712 return ERR_CAST(vr->fib4);
717 static void mlxsw_sp_vr_destroy(struct mlxsw_sp_vr *vr)
719 mlxsw_sp_fib_destroy(vr->fib4);
724 mlxsw_sp_vr_lpm_tree_check(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fib *fib,
725 struct mlxsw_sp_prefix_usage *req_prefix_usage)
727 struct mlxsw_sp_lpm_tree *lpm_tree = fib->lpm_tree;
728 struct mlxsw_sp_lpm_tree *new_tree;
731 if (mlxsw_sp_prefix_usage_eq(req_prefix_usage, &lpm_tree->prefix_usage))
734 new_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, req_prefix_usage,
736 if (IS_ERR(new_tree)) {
737 /* We failed to get a tree according to the required
738 * prefix usage. However, the current tree might be still good
739 * for us if our requirement is subset of the prefixes used
742 if (mlxsw_sp_prefix_usage_subset(req_prefix_usage,
743 &lpm_tree->prefix_usage))
745 return PTR_ERR(new_tree);
748 /* Prevent packet loss by overwriting existing binding */
749 fib->lpm_tree = new_tree;
750 err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib);
753 mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree);
758 fib->lpm_tree = lpm_tree;
759 mlxsw_sp_lpm_tree_put(mlxsw_sp, new_tree);
763 static struct mlxsw_sp_vr *mlxsw_sp_vr_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id)
765 struct mlxsw_sp_vr *vr;
767 tb_id = mlxsw_sp_fix_tb_id(tb_id);
768 vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id);
770 vr = mlxsw_sp_vr_create(mlxsw_sp, tb_id);
774 static void mlxsw_sp_vr_put(struct mlxsw_sp_vr *vr)
776 if (!vr->rif_count && list_empty(&vr->fib4->node_list))
777 mlxsw_sp_vr_destroy(vr);
780 static int mlxsw_sp_vrs_init(struct mlxsw_sp *mlxsw_sp)
782 struct mlxsw_sp_vr *vr;
786 if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_VRS))
789 max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS);
790 mlxsw_sp->router->vrs = kcalloc(max_vrs, sizeof(struct mlxsw_sp_vr),
792 if (!mlxsw_sp->router->vrs)
795 for (i = 0; i < max_vrs; i++) {
796 vr = &mlxsw_sp->router->vrs[i];
803 static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp);
805 static void mlxsw_sp_vrs_fini(struct mlxsw_sp *mlxsw_sp)
807 /* At this stage we're guaranteed not to have new incoming
808 * FIB notifications and the work queue is free from FIBs
809 * sitting on top of mlxsw netdevs. However, we can still
810 * have other FIBs queued. Flush the queue before flushing
811 * the device's tables. No need for locks, as we're the only
814 mlxsw_core_flush_owq();
815 mlxsw_sp_router_fib_flush(mlxsw_sp);
816 kfree(mlxsw_sp->router->vrs);
819 struct mlxsw_sp_neigh_key {
823 struct mlxsw_sp_neigh_entry {
824 struct list_head rif_list_node;
825 struct rhash_head ht_node;
826 struct mlxsw_sp_neigh_key key;
829 unsigned char ha[ETH_ALEN];
830 struct list_head nexthop_list; /* list of nexthops using
833 struct list_head nexthop_neighs_list_node;
836 static const struct rhashtable_params mlxsw_sp_neigh_ht_params = {
837 .key_offset = offsetof(struct mlxsw_sp_neigh_entry, key),
838 .head_offset = offsetof(struct mlxsw_sp_neigh_entry, ht_node),
839 .key_len = sizeof(struct mlxsw_sp_neigh_key),
842 static struct mlxsw_sp_neigh_entry *
843 mlxsw_sp_neigh_entry_alloc(struct mlxsw_sp *mlxsw_sp, struct neighbour *n,
846 struct mlxsw_sp_neigh_entry *neigh_entry;
848 neigh_entry = kzalloc(sizeof(*neigh_entry), GFP_KERNEL);
852 neigh_entry->key.n = n;
853 neigh_entry->rif = rif;
854 INIT_LIST_HEAD(&neigh_entry->nexthop_list);
859 static void mlxsw_sp_neigh_entry_free(struct mlxsw_sp_neigh_entry *neigh_entry)
865 mlxsw_sp_neigh_entry_insert(struct mlxsw_sp *mlxsw_sp,
866 struct mlxsw_sp_neigh_entry *neigh_entry)
868 return rhashtable_insert_fast(&mlxsw_sp->router->neigh_ht,
869 &neigh_entry->ht_node,
870 mlxsw_sp_neigh_ht_params);
874 mlxsw_sp_neigh_entry_remove(struct mlxsw_sp *mlxsw_sp,
875 struct mlxsw_sp_neigh_entry *neigh_entry)
877 rhashtable_remove_fast(&mlxsw_sp->router->neigh_ht,
878 &neigh_entry->ht_node,
879 mlxsw_sp_neigh_ht_params);
882 static struct mlxsw_sp_neigh_entry *
883 mlxsw_sp_neigh_entry_create(struct mlxsw_sp *mlxsw_sp, struct neighbour *n)
885 struct mlxsw_sp_neigh_entry *neigh_entry;
886 struct mlxsw_sp_rif *rif;
889 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, n->dev);
891 return ERR_PTR(-EINVAL);
893 neigh_entry = mlxsw_sp_neigh_entry_alloc(mlxsw_sp, n, rif->rif_index);
895 return ERR_PTR(-ENOMEM);
897 err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry);
899 goto err_neigh_entry_insert;
901 list_add(&neigh_entry->rif_list_node, &rif->neigh_list);
905 err_neigh_entry_insert:
906 mlxsw_sp_neigh_entry_free(neigh_entry);
911 mlxsw_sp_neigh_entry_destroy(struct mlxsw_sp *mlxsw_sp,
912 struct mlxsw_sp_neigh_entry *neigh_entry)
914 list_del(&neigh_entry->rif_list_node);
915 mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry);
916 mlxsw_sp_neigh_entry_free(neigh_entry);
919 static struct mlxsw_sp_neigh_entry *
920 mlxsw_sp_neigh_entry_lookup(struct mlxsw_sp *mlxsw_sp, struct neighbour *n)
922 struct mlxsw_sp_neigh_key key;
925 return rhashtable_lookup_fast(&mlxsw_sp->router->neigh_ht,
926 &key, mlxsw_sp_neigh_ht_params);
930 mlxsw_sp_router_neighs_update_interval_init(struct mlxsw_sp *mlxsw_sp)
932 unsigned long interval = NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME);
934 mlxsw_sp->router->neighs_update.interval = jiffies_to_msecs(interval);
937 static void mlxsw_sp_router_neigh_ent_ipv4_process(struct mlxsw_sp *mlxsw_sp,
941 struct net_device *dev;
947 mlxsw_reg_rauhtd_ent_ipv4_unpack(rauhtd_pl, ent_index, &rif, &dip);
949 if (!mlxsw_sp->router->rifs[rif]) {
950 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n");
955 dev = mlxsw_sp->router->rifs[rif]->dev;
956 n = neigh_lookup(&arp_tbl, &dipn, dev);
958 netdev_err(dev, "Failed to find matching neighbour for IP=%pI4h\n",
963 netdev_dbg(dev, "Updating neighbour with IP=%pI4h\n", &dip);
964 neigh_event_send(n, NULL);
968 static void mlxsw_sp_router_neigh_rec_ipv4_process(struct mlxsw_sp *mlxsw_sp,
975 num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl,
977 /* Hardware starts counting at 0, so add 1. */
980 /* Each record consists of several neighbour entries. */
981 for (i = 0; i < num_entries; i++) {
984 ent_index = rec_index * MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC + i;
985 mlxsw_sp_router_neigh_ent_ipv4_process(mlxsw_sp, rauhtd_pl,
991 static void mlxsw_sp_router_neigh_rec_process(struct mlxsw_sp *mlxsw_sp,
992 char *rauhtd_pl, int rec_index)
994 switch (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, rec_index)) {
995 case MLXSW_REG_RAUHTD_TYPE_IPV4:
996 mlxsw_sp_router_neigh_rec_ipv4_process(mlxsw_sp, rauhtd_pl,
999 case MLXSW_REG_RAUHTD_TYPE_IPV6:
1005 static bool mlxsw_sp_router_rauhtd_is_full(char *rauhtd_pl)
1007 u8 num_rec, last_rec_index, num_entries;
1009 num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl);
1010 last_rec_index = num_rec - 1;
1012 if (num_rec < MLXSW_REG_RAUHTD_REC_MAX_NUM)
1014 if (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, last_rec_index) ==
1015 MLXSW_REG_RAUHTD_TYPE_IPV6)
1018 num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl,
1020 if (++num_entries == MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC)
1025 static int mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp)
1031 rauhtd_pl = kmalloc(MLXSW_REG_RAUHTD_LEN, GFP_KERNEL);
1035 /* Make sure the neighbour's netdev isn't removed in the
1040 mlxsw_reg_rauhtd_pack(rauhtd_pl, MLXSW_REG_RAUHTD_TYPE_IPV4);
1041 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(rauhtd),
1044 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to dump neighbour talbe\n");
1047 num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl);
1048 for (i = 0; i < num_rec; i++)
1049 mlxsw_sp_router_neigh_rec_process(mlxsw_sp, rauhtd_pl,
1051 } while (mlxsw_sp_router_rauhtd_is_full(rauhtd_pl));
1058 static void mlxsw_sp_router_neighs_update_nh(struct mlxsw_sp *mlxsw_sp)
1060 struct mlxsw_sp_neigh_entry *neigh_entry;
1062 /* Take RTNL mutex here to prevent lists from changes */
1064 list_for_each_entry(neigh_entry, &mlxsw_sp->router->nexthop_neighs_list,
1065 nexthop_neighs_list_node)
1066 /* If this neigh have nexthops, make the kernel think this neigh
1067 * is active regardless of the traffic.
1069 neigh_event_send(neigh_entry->key.n, NULL);
1074 mlxsw_sp_router_neighs_update_work_schedule(struct mlxsw_sp *mlxsw_sp)
1076 unsigned long interval = mlxsw_sp->router->neighs_update.interval;
1078 mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw,
1079 msecs_to_jiffies(interval));
1082 static void mlxsw_sp_router_neighs_update_work(struct work_struct *work)
1084 struct mlxsw_sp_router *router;
1087 router = container_of(work, struct mlxsw_sp_router,
1088 neighs_update.dw.work);
1089 err = mlxsw_sp_router_neighs_update_rauhtd(router->mlxsw_sp);
1091 dev_err(router->mlxsw_sp->bus_info->dev, "Could not update kernel for neigh activity");
1093 mlxsw_sp_router_neighs_update_nh(router->mlxsw_sp);
1095 mlxsw_sp_router_neighs_update_work_schedule(router->mlxsw_sp);
1098 static void mlxsw_sp_router_probe_unresolved_nexthops(struct work_struct *work)
1100 struct mlxsw_sp_neigh_entry *neigh_entry;
1101 struct mlxsw_sp_router *router;
1103 router = container_of(work, struct mlxsw_sp_router,
1104 nexthop_probe_dw.work);
1105 /* Iterate over nexthop neighbours, find those who are unresolved and
1106 * send arp on them. This solves the chicken-egg problem when
1107 * the nexthop wouldn't get offloaded until the neighbor is resolved
1108 * but it wouldn't get resolved ever in case traffic is flowing in HW
1109 * using different nexthop.
1111 * Take RTNL mutex here to prevent lists from changes.
1114 list_for_each_entry(neigh_entry, &router->nexthop_neighs_list,
1115 nexthop_neighs_list_node)
1116 if (!neigh_entry->connected)
1117 neigh_event_send(neigh_entry->key.n, NULL);
1120 mlxsw_core_schedule_dw(&router->nexthop_probe_dw,
1121 MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL);
1125 mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp,
1126 struct mlxsw_sp_neigh_entry *neigh_entry,
1129 static enum mlxsw_reg_rauht_op mlxsw_sp_rauht_op(bool adding)
1131 return adding ? MLXSW_REG_RAUHT_OP_WRITE_ADD :
1132 MLXSW_REG_RAUHT_OP_WRITE_DELETE;
1136 mlxsw_sp_router_neigh_entry_op4(struct mlxsw_sp *mlxsw_sp,
1137 struct mlxsw_sp_neigh_entry *neigh_entry,
1138 enum mlxsw_reg_rauht_op op)
1140 struct neighbour *n = neigh_entry->key.n;
1141 u32 dip = ntohl(*((__be32 *) n->primary_key));
1142 char rauht_pl[MLXSW_REG_RAUHT_LEN];
1144 mlxsw_reg_rauht_pack4(rauht_pl, op, neigh_entry->rif, neigh_entry->ha,
1146 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl);
1150 mlxsw_sp_neigh_entry_update(struct mlxsw_sp *mlxsw_sp,
1151 struct mlxsw_sp_neigh_entry *neigh_entry,
1154 if (!adding && !neigh_entry->connected)
1156 neigh_entry->connected = adding;
1157 if (neigh_entry->key.n->tbl == &arp_tbl)
1158 mlxsw_sp_router_neigh_entry_op4(mlxsw_sp, neigh_entry,
1159 mlxsw_sp_rauht_op(adding));
1164 struct mlxsw_sp_neigh_event_work {
1165 struct work_struct work;
1166 struct mlxsw_sp *mlxsw_sp;
1167 struct neighbour *n;
1170 static void mlxsw_sp_router_neigh_event_work(struct work_struct *work)
1172 struct mlxsw_sp_neigh_event_work *neigh_work =
1173 container_of(work, struct mlxsw_sp_neigh_event_work, work);
1174 struct mlxsw_sp *mlxsw_sp = neigh_work->mlxsw_sp;
1175 struct mlxsw_sp_neigh_entry *neigh_entry;
1176 struct neighbour *n = neigh_work->n;
1177 unsigned char ha[ETH_ALEN];
1178 bool entry_connected;
1181 /* If these parameters are changed after we release the lock,
1182 * then we are guaranteed to receive another event letting us
1185 read_lock_bh(&n->lock);
1186 memcpy(ha, n->ha, ETH_ALEN);
1187 nud_state = n->nud_state;
1189 read_unlock_bh(&n->lock);
1192 entry_connected = nud_state & NUD_VALID && !dead;
1193 neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n);
1194 if (!entry_connected && !neigh_entry)
1197 neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n);
1198 if (IS_ERR(neigh_entry))
1202 memcpy(neigh_entry->ha, ha, ETH_ALEN);
1203 mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, entry_connected);
1204 mlxsw_sp_nexthop_neigh_update(mlxsw_sp, neigh_entry, !entry_connected);
1206 if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list))
1207 mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry);
1215 int mlxsw_sp_router_netevent_event(struct notifier_block *unused,
1216 unsigned long event, void *ptr)
1218 struct mlxsw_sp_neigh_event_work *neigh_work;
1219 struct mlxsw_sp_port *mlxsw_sp_port;
1220 struct mlxsw_sp *mlxsw_sp;
1221 unsigned long interval;
1222 struct neigh_parms *p;
1223 struct neighbour *n;
1226 case NETEVENT_DELAY_PROBE_TIME_UPDATE:
1229 /* We don't care about changes in the default table. */
1230 if (!p->dev || p->tbl != &arp_tbl)
1233 /* We are in atomic context and can't take RTNL mutex,
1234 * so use RCU variant to walk the device chain.
1236 mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(p->dev);
1240 mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1241 interval = jiffies_to_msecs(NEIGH_VAR(p, DELAY_PROBE_TIME));
1242 mlxsw_sp->router->neighs_update.interval = interval;
1244 mlxsw_sp_port_dev_put(mlxsw_sp_port);
1246 case NETEVENT_NEIGH_UPDATE:
1249 if (n->tbl != &arp_tbl)
1252 mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(n->dev);
1256 neigh_work = kzalloc(sizeof(*neigh_work), GFP_ATOMIC);
1258 mlxsw_sp_port_dev_put(mlxsw_sp_port);
1262 INIT_WORK(&neigh_work->work, mlxsw_sp_router_neigh_event_work);
1263 neigh_work->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1266 /* Take a reference to ensure the neighbour won't be
1267 * destructed until we drop the reference in delayed
1271 mlxsw_core_schedule_work(&neigh_work->work);
1272 mlxsw_sp_port_dev_put(mlxsw_sp_port);
1279 static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp)
1283 err = rhashtable_init(&mlxsw_sp->router->neigh_ht,
1284 &mlxsw_sp_neigh_ht_params);
1288 /* Initialize the polling interval according to the default
1291 mlxsw_sp_router_neighs_update_interval_init(mlxsw_sp);
1293 /* Create the delayed works for the activity_update */
1294 INIT_DELAYED_WORK(&mlxsw_sp->router->neighs_update.dw,
1295 mlxsw_sp_router_neighs_update_work);
1296 INIT_DELAYED_WORK(&mlxsw_sp->router->nexthop_probe_dw,
1297 mlxsw_sp_router_probe_unresolved_nexthops);
1298 mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, 0);
1299 mlxsw_core_schedule_dw(&mlxsw_sp->router->nexthop_probe_dw, 0);
1303 static void mlxsw_sp_neigh_fini(struct mlxsw_sp *mlxsw_sp)
1305 cancel_delayed_work_sync(&mlxsw_sp->router->neighs_update.dw);
1306 cancel_delayed_work_sync(&mlxsw_sp->router->nexthop_probe_dw);
1307 rhashtable_destroy(&mlxsw_sp->router->neigh_ht);
1310 static int mlxsw_sp_neigh_rif_flush(struct mlxsw_sp *mlxsw_sp,
1311 const struct mlxsw_sp_rif *rif)
1313 char rauht_pl[MLXSW_REG_RAUHT_LEN];
1315 mlxsw_reg_rauht_pack(rauht_pl, MLXSW_REG_RAUHT_OP_WRITE_DELETE_ALL,
1316 rif->rif_index, rif->addr);
1317 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl);
1320 static void mlxsw_sp_neigh_rif_gone_sync(struct mlxsw_sp *mlxsw_sp,
1321 struct mlxsw_sp_rif *rif)
1323 struct mlxsw_sp_neigh_entry *neigh_entry, *tmp;
1325 mlxsw_sp_neigh_rif_flush(mlxsw_sp, rif);
1326 list_for_each_entry_safe(neigh_entry, tmp, &rif->neigh_list,
1328 mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry);
1331 struct mlxsw_sp_nexthop_key {
1332 struct fib_nh *fib_nh;
1335 struct mlxsw_sp_nexthop {
1336 struct list_head neigh_list_node; /* member of neigh entry list */
1337 struct list_head rif_list_node;
1338 struct mlxsw_sp_nexthop_group *nh_grp; /* pointer back to the group
1341 struct rhash_head ht_node;
1342 struct mlxsw_sp_nexthop_key key;
1343 struct mlxsw_sp_rif *rif;
1344 u8 should_offload:1, /* set indicates this neigh is connected and
1345 * should be put to KVD linear area of this group.
1347 offloaded:1, /* set in case the neigh is actually put into
1348 * KVD linear area of this group.
1350 update:1; /* set indicates that MAC of this neigh should be
1353 struct mlxsw_sp_neigh_entry *neigh_entry;
1356 struct mlxsw_sp_nexthop_group_key {
1357 struct fib_info *fi;
1360 struct mlxsw_sp_nexthop_group {
1361 struct rhash_head ht_node;
1362 struct list_head fib_list; /* list of fib entries that use this group */
1363 struct mlxsw_sp_nexthop_group_key key;
1364 u8 adj_index_valid:1,
1365 gateway:1; /* routes using the group use a gateway */
1369 struct mlxsw_sp_nexthop nexthops[0];
1370 #define nh_rif nexthops[0].rif
1373 static const struct rhashtable_params mlxsw_sp_nexthop_group_ht_params = {
1374 .key_offset = offsetof(struct mlxsw_sp_nexthop_group, key),
1375 .head_offset = offsetof(struct mlxsw_sp_nexthop_group, ht_node),
1376 .key_len = sizeof(struct mlxsw_sp_nexthop_group_key),
1379 static int mlxsw_sp_nexthop_group_insert(struct mlxsw_sp *mlxsw_sp,
1380 struct mlxsw_sp_nexthop_group *nh_grp)
1382 return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_group_ht,
1384 mlxsw_sp_nexthop_group_ht_params);
1387 static void mlxsw_sp_nexthop_group_remove(struct mlxsw_sp *mlxsw_sp,
1388 struct mlxsw_sp_nexthop_group *nh_grp)
1390 rhashtable_remove_fast(&mlxsw_sp->router->nexthop_group_ht,
1392 mlxsw_sp_nexthop_group_ht_params);
1395 static struct mlxsw_sp_nexthop_group *
1396 mlxsw_sp_nexthop_group_lookup(struct mlxsw_sp *mlxsw_sp,
1397 struct mlxsw_sp_nexthop_group_key key)
1399 return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, &key,
1400 mlxsw_sp_nexthop_group_ht_params);
1403 static const struct rhashtable_params mlxsw_sp_nexthop_ht_params = {
1404 .key_offset = offsetof(struct mlxsw_sp_nexthop, key),
1405 .head_offset = offsetof(struct mlxsw_sp_nexthop, ht_node),
1406 .key_len = sizeof(struct mlxsw_sp_nexthop_key),
1409 static int mlxsw_sp_nexthop_insert(struct mlxsw_sp *mlxsw_sp,
1410 struct mlxsw_sp_nexthop *nh)
1412 return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_ht,
1413 &nh->ht_node, mlxsw_sp_nexthop_ht_params);
1416 static void mlxsw_sp_nexthop_remove(struct mlxsw_sp *mlxsw_sp,
1417 struct mlxsw_sp_nexthop *nh)
1419 rhashtable_remove_fast(&mlxsw_sp->router->nexthop_ht, &nh->ht_node,
1420 mlxsw_sp_nexthop_ht_params);
1423 static struct mlxsw_sp_nexthop *
1424 mlxsw_sp_nexthop_lookup(struct mlxsw_sp *mlxsw_sp,
1425 struct mlxsw_sp_nexthop_key key)
1427 return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_ht, &key,
1428 mlxsw_sp_nexthop_ht_params);
1431 static int mlxsw_sp_adj_index_mass_update_vr(struct mlxsw_sp *mlxsw_sp,
1432 const struct mlxsw_sp_fib *fib,
1433 u32 adj_index, u16 ecmp_size,
1437 char raleu_pl[MLXSW_REG_RALEU_LEN];
1439 mlxsw_reg_raleu_pack(raleu_pl,
1440 (enum mlxsw_reg_ralxx_protocol) fib->proto,
1441 fib->vr->id, adj_index, ecmp_size, new_adj_index,
1443 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raleu), raleu_pl);
1446 static int mlxsw_sp_adj_index_mass_update(struct mlxsw_sp *mlxsw_sp,
1447 struct mlxsw_sp_nexthop_group *nh_grp,
1448 u32 old_adj_index, u16 old_ecmp_size)
1450 struct mlxsw_sp_fib_entry *fib_entry;
1451 struct mlxsw_sp_fib *fib = NULL;
1454 list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) {
1455 if (fib == fib_entry->fib_node->fib)
1457 fib = fib_entry->fib_node->fib;
1458 err = mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, fib,
1469 static int mlxsw_sp_nexthop_mac_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
1470 struct mlxsw_sp_nexthop *nh)
1472 struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry;
1473 char ratr_pl[MLXSW_REG_RATR_LEN];
1475 mlxsw_reg_ratr_pack(ratr_pl, MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY,
1476 true, adj_index, neigh_entry->rif);
1477 mlxsw_reg_ratr_eth_entry_pack(ratr_pl, neigh_entry->ha);
1478 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl);
1482 mlxsw_sp_nexthop_group_mac_update(struct mlxsw_sp *mlxsw_sp,
1483 struct mlxsw_sp_nexthop_group *nh_grp,
1486 u32 adj_index = nh_grp->adj_index; /* base */
1487 struct mlxsw_sp_nexthop *nh;
1491 for (i = 0; i < nh_grp->count; i++) {
1492 nh = &nh_grp->nexthops[i];
1494 if (!nh->should_offload) {
1499 if (nh->update || reallocate) {
1500 err = mlxsw_sp_nexthop_mac_update(mlxsw_sp,
1512 static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp,
1513 struct mlxsw_sp_fib_entry *fib_entry);
1516 mlxsw_sp_nexthop_fib_entries_update(struct mlxsw_sp *mlxsw_sp,
1517 struct mlxsw_sp_nexthop_group *nh_grp)
1519 struct mlxsw_sp_fib_entry *fib_entry;
1522 list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) {
1523 err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry);
1531 mlxsw_sp_nexthop_group_refresh(struct mlxsw_sp *mlxsw_sp,
1532 struct mlxsw_sp_nexthop_group *nh_grp)
1534 struct mlxsw_sp_nexthop *nh;
1535 bool offload_change = false;
1538 bool old_adj_index_valid;
1544 if (!nh_grp->gateway) {
1545 mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp);
1549 for (i = 0; i < nh_grp->count; i++) {
1550 nh = &nh_grp->nexthops[i];
1552 if (nh->should_offload ^ nh->offloaded) {
1553 offload_change = true;
1554 if (nh->should_offload)
1557 if (nh->should_offload)
1560 if (!offload_change) {
1561 /* Nothing was added or removed, so no need to reallocate. Just
1562 * update MAC on existing adjacency indexes.
1564 err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp,
1567 dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n");
1573 /* No neigh of this group is connected so we just set
1574 * the trap and let everthing flow through kernel.
1578 err = mlxsw_sp_kvdl_alloc(mlxsw_sp, ecmp_size, &adj_index);
1580 /* We ran out of KVD linear space, just set the
1581 * trap and let everything flow through kernel.
1583 dev_warn(mlxsw_sp->bus_info->dev, "Failed to allocate KVD linear area for nexthop group.\n");
1586 old_adj_index_valid = nh_grp->adj_index_valid;
1587 old_adj_index = nh_grp->adj_index;
1588 old_ecmp_size = nh_grp->ecmp_size;
1589 nh_grp->adj_index_valid = 1;
1590 nh_grp->adj_index = adj_index;
1591 nh_grp->ecmp_size = ecmp_size;
1592 err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, true);
1594 dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n");
1598 if (!old_adj_index_valid) {
1599 /* The trap was set for fib entries, so we have to call
1600 * fib entry update to unset it and use adjacency index.
1602 err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp);
1604 dev_warn(mlxsw_sp->bus_info->dev, "Failed to add adjacency index to fib entries.\n");
1610 err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, nh_grp,
1611 old_adj_index, old_ecmp_size);
1612 mlxsw_sp_kvdl_free(mlxsw_sp, old_adj_index);
1614 dev_warn(mlxsw_sp->bus_info->dev, "Failed to mass-update adjacency index for nexthop group.\n");
1620 old_adj_index_valid = nh_grp->adj_index_valid;
1621 nh_grp->adj_index_valid = 0;
1622 for (i = 0; i < nh_grp->count; i++) {
1623 nh = &nh_grp->nexthops[i];
1626 err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp);
1628 dev_warn(mlxsw_sp->bus_info->dev, "Failed to set traps for fib entries.\n");
1629 if (old_adj_index_valid)
1630 mlxsw_sp_kvdl_free(mlxsw_sp, nh_grp->adj_index);
1633 static void __mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp_nexthop *nh,
1636 if (!removing && !nh->should_offload)
1637 nh->should_offload = 1;
1638 else if (removing && nh->offloaded)
1639 nh->should_offload = 0;
1644 mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp,
1645 struct mlxsw_sp_neigh_entry *neigh_entry,
1648 struct mlxsw_sp_nexthop *nh;
1650 list_for_each_entry(nh, &neigh_entry->nexthop_list,
1652 __mlxsw_sp_nexthop_neigh_update(nh, removing);
1653 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp);
1657 static void mlxsw_sp_nexthop_rif_init(struct mlxsw_sp_nexthop *nh,
1658 struct mlxsw_sp_rif *rif)
1664 list_add(&nh->rif_list_node, &rif->nexthop_list);
1667 static void mlxsw_sp_nexthop_rif_fini(struct mlxsw_sp_nexthop *nh)
1672 list_del(&nh->rif_list_node);
1676 static int mlxsw_sp_nexthop_neigh_init(struct mlxsw_sp *mlxsw_sp,
1677 struct mlxsw_sp_nexthop *nh)
1679 struct mlxsw_sp_neigh_entry *neigh_entry;
1680 struct fib_nh *fib_nh = nh->key.fib_nh;
1681 struct neighbour *n;
1685 if (!nh->nh_grp->gateway || nh->neigh_entry)
1688 /* Take a reference of neigh here ensuring that neigh would
1689 * not be detructed before the nexthop entry is finished.
1690 * The reference is taken either in neigh_lookup() or
1691 * in neigh_create() in case n is not found.
1693 n = neigh_lookup(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev);
1695 n = neigh_create(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev);
1698 neigh_event_send(n, NULL);
1700 neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n);
1702 neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n);
1703 if (IS_ERR(neigh_entry)) {
1705 goto err_neigh_entry_create;
1709 /* If that is the first nexthop connected to that neigh, add to
1710 * nexthop_neighs_list
1712 if (list_empty(&neigh_entry->nexthop_list))
1713 list_add_tail(&neigh_entry->nexthop_neighs_list_node,
1714 &mlxsw_sp->router->nexthop_neighs_list);
1716 nh->neigh_entry = neigh_entry;
1717 list_add_tail(&nh->neigh_list_node, &neigh_entry->nexthop_list);
1718 read_lock_bh(&n->lock);
1719 nud_state = n->nud_state;
1721 read_unlock_bh(&n->lock);
1722 __mlxsw_sp_nexthop_neigh_update(nh, !(nud_state & NUD_VALID && !dead));
1726 err_neigh_entry_create:
1731 static void mlxsw_sp_nexthop_neigh_fini(struct mlxsw_sp *mlxsw_sp,
1732 struct mlxsw_sp_nexthop *nh)
1734 struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry;
1735 struct neighbour *n;
1739 n = neigh_entry->key.n;
1741 __mlxsw_sp_nexthop_neigh_update(nh, true);
1742 list_del(&nh->neigh_list_node);
1743 nh->neigh_entry = NULL;
1745 /* If that is the last nexthop connected to that neigh, remove from
1746 * nexthop_neighs_list
1748 if (list_empty(&neigh_entry->nexthop_list))
1749 list_del(&neigh_entry->nexthop_neighs_list_node);
1751 if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list))
1752 mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry);
1757 static int mlxsw_sp_nexthop_init(struct mlxsw_sp *mlxsw_sp,
1758 struct mlxsw_sp_nexthop_group *nh_grp,
1759 struct mlxsw_sp_nexthop *nh,
1760 struct fib_nh *fib_nh)
1762 struct net_device *dev = fib_nh->nh_dev;
1763 struct in_device *in_dev;
1764 struct mlxsw_sp_rif *rif;
1767 nh->nh_grp = nh_grp;
1768 nh->key.fib_nh = fib_nh;
1769 err = mlxsw_sp_nexthop_insert(mlxsw_sp, nh);
1776 in_dev = __in_dev_get_rtnl(dev);
1777 if (in_dev && IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) &&
1778 fib_nh->nh_flags & RTNH_F_LINKDOWN)
1781 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
1784 mlxsw_sp_nexthop_rif_init(nh, rif);
1786 err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh);
1788 goto err_nexthop_neigh_init;
1792 err_nexthop_neigh_init:
1793 mlxsw_sp_nexthop_rif_fini(nh);
1794 mlxsw_sp_nexthop_remove(mlxsw_sp, nh);
1798 static void mlxsw_sp_nexthop_fini(struct mlxsw_sp *mlxsw_sp,
1799 struct mlxsw_sp_nexthop *nh)
1801 mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh);
1802 mlxsw_sp_nexthop_rif_fini(nh);
1803 mlxsw_sp_nexthop_remove(mlxsw_sp, nh);
1806 static void mlxsw_sp_nexthop_event(struct mlxsw_sp *mlxsw_sp,
1807 unsigned long event, struct fib_nh *fib_nh)
1809 struct mlxsw_sp_nexthop_key key;
1810 struct mlxsw_sp_nexthop *nh;
1811 struct mlxsw_sp_rif *rif;
1813 if (mlxsw_sp->router->aborted)
1816 key.fib_nh = fib_nh;
1817 nh = mlxsw_sp_nexthop_lookup(mlxsw_sp, key);
1818 if (WARN_ON_ONCE(!nh))
1821 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, fib_nh->nh_dev);
1826 case FIB_EVENT_NH_ADD:
1827 mlxsw_sp_nexthop_rif_init(nh, rif);
1828 mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh);
1830 case FIB_EVENT_NH_DEL:
1831 mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh);
1832 mlxsw_sp_nexthop_rif_fini(nh);
1836 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp);
1839 static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp,
1840 struct mlxsw_sp_rif *rif)
1842 struct mlxsw_sp_nexthop *nh, *tmp;
1844 list_for_each_entry_safe(nh, tmp, &rif->nexthop_list, rif_list_node) {
1845 mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh);
1846 mlxsw_sp_nexthop_rif_fini(nh);
1847 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp);
1851 static struct mlxsw_sp_nexthop_group *
1852 mlxsw_sp_nexthop_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi)
1854 struct mlxsw_sp_nexthop_group *nh_grp;
1855 struct mlxsw_sp_nexthop *nh;
1856 struct fib_nh *fib_nh;
1861 alloc_size = sizeof(*nh_grp) +
1862 fi->fib_nhs * sizeof(struct mlxsw_sp_nexthop);
1863 nh_grp = kzalloc(alloc_size, GFP_KERNEL);
1865 return ERR_PTR(-ENOMEM);
1866 INIT_LIST_HEAD(&nh_grp->fib_list);
1867 nh_grp->gateway = fi->fib_nh->nh_scope == RT_SCOPE_LINK;
1868 nh_grp->count = fi->fib_nhs;
1869 nh_grp->key.fi = fi;
1870 for (i = 0; i < nh_grp->count; i++) {
1871 nh = &nh_grp->nexthops[i];
1872 fib_nh = &fi->fib_nh[i];
1873 err = mlxsw_sp_nexthop_init(mlxsw_sp, nh_grp, nh, fib_nh);
1875 goto err_nexthop_init;
1877 err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp);
1879 goto err_nexthop_group_insert;
1880 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp);
1883 err_nexthop_group_insert:
1885 for (i--; i >= 0; i--) {
1886 nh = &nh_grp->nexthops[i];
1887 mlxsw_sp_nexthop_fini(mlxsw_sp, nh);
1890 return ERR_PTR(err);
1894 mlxsw_sp_nexthop_group_destroy(struct mlxsw_sp *mlxsw_sp,
1895 struct mlxsw_sp_nexthop_group *nh_grp)
1897 struct mlxsw_sp_nexthop *nh;
1900 mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp);
1901 for (i = 0; i < nh_grp->count; i++) {
1902 nh = &nh_grp->nexthops[i];
1903 mlxsw_sp_nexthop_fini(mlxsw_sp, nh);
1905 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp);
1906 WARN_ON_ONCE(nh_grp->adj_index_valid);
1910 static int mlxsw_sp_nexthop_group_get(struct mlxsw_sp *mlxsw_sp,
1911 struct mlxsw_sp_fib_entry *fib_entry,
1912 struct fib_info *fi)
1914 struct mlxsw_sp_nexthop_group_key key;
1915 struct mlxsw_sp_nexthop_group *nh_grp;
1918 nh_grp = mlxsw_sp_nexthop_group_lookup(mlxsw_sp, key);
1920 nh_grp = mlxsw_sp_nexthop_group_create(mlxsw_sp, fi);
1922 return PTR_ERR(nh_grp);
1924 list_add_tail(&fib_entry->nexthop_group_node, &nh_grp->fib_list);
1925 fib_entry->nh_group = nh_grp;
1929 static void mlxsw_sp_nexthop_group_put(struct mlxsw_sp *mlxsw_sp,
1930 struct mlxsw_sp_fib_entry *fib_entry)
1932 struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group;
1934 list_del(&fib_entry->nexthop_group_node);
1935 if (!list_empty(&nh_grp->fib_list))
1937 mlxsw_sp_nexthop_group_destroy(mlxsw_sp, nh_grp);
1941 mlxsw_sp_fib_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry)
1943 struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group;
1945 if (fib_entry->params.tos)
1948 switch (fib_entry->type) {
1949 case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE:
1950 return !!nh_group->adj_index_valid;
1951 case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL:
1952 return !!nh_group->nh_rif;
1958 static void mlxsw_sp_fib_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry)
1960 fib_entry->offloaded = true;
1962 switch (fib_entry->fib_node->fib->proto) {
1963 case MLXSW_SP_L3_PROTO_IPV4:
1964 fib_info_offload_inc(fib_entry->nh_group->key.fi);
1966 case MLXSW_SP_L3_PROTO_IPV6:
1972 mlxsw_sp_fib_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry)
1974 switch (fib_entry->fib_node->fib->proto) {
1975 case MLXSW_SP_L3_PROTO_IPV4:
1976 fib_info_offload_dec(fib_entry->nh_group->key.fi);
1978 case MLXSW_SP_L3_PROTO_IPV6:
1982 fib_entry->offloaded = false;
1986 mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry,
1987 enum mlxsw_reg_ralue_op op, int err)
1990 case MLXSW_REG_RALUE_OP_WRITE_DELETE:
1991 if (!fib_entry->offloaded)
1993 return mlxsw_sp_fib_entry_offload_unset(fib_entry);
1994 case MLXSW_REG_RALUE_OP_WRITE_WRITE:
1997 if (mlxsw_sp_fib_entry_should_offload(fib_entry) &&
1998 !fib_entry->offloaded)
1999 mlxsw_sp_fib_entry_offload_set(fib_entry);
2000 else if (!mlxsw_sp_fib_entry_should_offload(fib_entry) &&
2001 fib_entry->offloaded)
2002 mlxsw_sp_fib_entry_offload_unset(fib_entry);
2009 static int mlxsw_sp_fib_entry_op4_remote(struct mlxsw_sp *mlxsw_sp,
2010 struct mlxsw_sp_fib_entry *fib_entry,
2011 enum mlxsw_reg_ralue_op op)
2013 char ralue_pl[MLXSW_REG_RALUE_LEN];
2014 struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib;
2015 u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr;
2016 enum mlxsw_reg_ralue_trap_action trap_action;
2018 u32 adjacency_index = 0;
2021 /* In case the nexthop group adjacency index is valid, use it
2022 * with provided ECMP size. Otherwise, setup trap and pass
2023 * traffic to kernel.
2025 if (mlxsw_sp_fib_entry_should_offload(fib_entry)) {
2026 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP;
2027 adjacency_index = fib_entry->nh_group->adj_index;
2028 ecmp_size = fib_entry->nh_group->ecmp_size;
2030 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP;
2031 trap_id = MLXSW_TRAP_ID_RTR_INGRESS0;
2034 mlxsw_reg_ralue_pack4(ralue_pl,
2035 (enum mlxsw_reg_ralxx_protocol) fib->proto, op,
2036 fib->vr->id, fib_entry->fib_node->key.prefix_len,
2038 mlxsw_reg_ralue_act_remote_pack(ralue_pl, trap_action, trap_id,
2039 adjacency_index, ecmp_size);
2040 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
2043 static int mlxsw_sp_fib_entry_op4_local(struct mlxsw_sp *mlxsw_sp,
2044 struct mlxsw_sp_fib_entry *fib_entry,
2045 enum mlxsw_reg_ralue_op op)
2047 struct mlxsw_sp_rif *rif = fib_entry->nh_group->nh_rif;
2048 struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib;
2049 enum mlxsw_reg_ralue_trap_action trap_action;
2050 char ralue_pl[MLXSW_REG_RALUE_LEN];
2051 u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr;
2055 if (mlxsw_sp_fib_entry_should_offload(fib_entry)) {
2056 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP;
2057 rif_index = rif->rif_index;
2059 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP;
2060 trap_id = MLXSW_TRAP_ID_RTR_INGRESS0;
2063 mlxsw_reg_ralue_pack4(ralue_pl,
2064 (enum mlxsw_reg_ralxx_protocol) fib->proto, op,
2065 fib->vr->id, fib_entry->fib_node->key.prefix_len,
2067 mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id,
2069 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
2072 static int mlxsw_sp_fib_entry_op4_trap(struct mlxsw_sp *mlxsw_sp,
2073 struct mlxsw_sp_fib_entry *fib_entry,
2074 enum mlxsw_reg_ralue_op op)
2076 struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib;
2077 char ralue_pl[MLXSW_REG_RALUE_LEN];
2078 u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr;
2080 mlxsw_reg_ralue_pack4(ralue_pl,
2081 (enum mlxsw_reg_ralxx_protocol) fib->proto, op,
2082 fib->vr->id, fib_entry->fib_node->key.prefix_len,
2084 mlxsw_reg_ralue_act_ip2me_pack(ralue_pl);
2085 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
2088 static int mlxsw_sp_fib_entry_op4(struct mlxsw_sp *mlxsw_sp,
2089 struct mlxsw_sp_fib_entry *fib_entry,
2090 enum mlxsw_reg_ralue_op op)
2092 switch (fib_entry->type) {
2093 case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE:
2094 return mlxsw_sp_fib_entry_op4_remote(mlxsw_sp, fib_entry, op);
2095 case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL:
2096 return mlxsw_sp_fib_entry_op4_local(mlxsw_sp, fib_entry, op);
2097 case MLXSW_SP_FIB_ENTRY_TYPE_TRAP:
2098 return mlxsw_sp_fib_entry_op4_trap(mlxsw_sp, fib_entry, op);
2103 static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp,
2104 struct mlxsw_sp_fib_entry *fib_entry,
2105 enum mlxsw_reg_ralue_op op)
2109 switch (fib_entry->fib_node->fib->proto) {
2110 case MLXSW_SP_L3_PROTO_IPV4:
2111 err = mlxsw_sp_fib_entry_op4(mlxsw_sp, fib_entry, op);
2113 case MLXSW_SP_L3_PROTO_IPV6:
2116 mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, err);
2120 static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp,
2121 struct mlxsw_sp_fib_entry *fib_entry)
2123 return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry,
2124 MLXSW_REG_RALUE_OP_WRITE_WRITE);
2127 static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp,
2128 struct mlxsw_sp_fib_entry *fib_entry)
2130 return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry,
2131 MLXSW_REG_RALUE_OP_WRITE_DELETE);
2135 mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp,
2136 const struct fib_entry_notifier_info *fen_info,
2137 struct mlxsw_sp_fib_entry *fib_entry)
2139 struct fib_info *fi = fen_info->fi;
2141 switch (fen_info->type) {
2142 case RTN_BROADCAST: /* fall through */
2144 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP;
2146 case RTN_UNREACHABLE: /* fall through */
2147 case RTN_BLACKHOLE: /* fall through */
2149 /* Packets hitting these routes need to be trapped, but
2150 * can do so with a lower priority than packets directed
2151 * at the host, so use action type local instead of trap.
2153 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL;
2156 if (fi->fib_nh->nh_scope != RT_SCOPE_LINK)
2157 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL;
2159 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE;
2166 static struct mlxsw_sp_fib_entry *
2167 mlxsw_sp_fib4_entry_create(struct mlxsw_sp *mlxsw_sp,
2168 struct mlxsw_sp_fib_node *fib_node,
2169 const struct fib_entry_notifier_info *fen_info)
2171 struct mlxsw_sp_fib_entry *fib_entry;
2174 fib_entry = kzalloc(sizeof(*fib_entry), GFP_KERNEL);
2177 goto err_fib_entry_alloc;
2180 err = mlxsw_sp_fib4_entry_type_set(mlxsw_sp, fen_info, fib_entry);
2182 goto err_fib4_entry_type_set;
2184 err = mlxsw_sp_nexthop_group_get(mlxsw_sp, fib_entry, fen_info->fi);
2186 goto err_nexthop_group_get;
2188 fib_entry->params.prio = fen_info->fi->fib_priority;
2189 fib_entry->params.tb_id = fen_info->tb_id;
2190 fib_entry->params.type = fen_info->type;
2191 fib_entry->params.tos = fen_info->tos;
2193 fib_entry->fib_node = fib_node;
2197 err_nexthop_group_get:
2198 err_fib4_entry_type_set:
2200 err_fib_entry_alloc:
2201 return ERR_PTR(err);
2204 static void mlxsw_sp_fib4_entry_destroy(struct mlxsw_sp *mlxsw_sp,
2205 struct mlxsw_sp_fib_entry *fib_entry)
2207 mlxsw_sp_nexthop_group_put(mlxsw_sp, fib_entry);
2211 static struct mlxsw_sp_fib_node *
2212 mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp,
2213 const struct fib_entry_notifier_info *fen_info);
2215 static struct mlxsw_sp_fib_entry *
2216 mlxsw_sp_fib4_entry_lookup(struct mlxsw_sp *mlxsw_sp,
2217 const struct fib_entry_notifier_info *fen_info)
2219 struct mlxsw_sp_fib_entry *fib_entry;
2220 struct mlxsw_sp_fib_node *fib_node;
2222 fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info);
2223 if (IS_ERR(fib_node))
2226 list_for_each_entry(fib_entry, &fib_node->entry_list, list) {
2227 if (fib_entry->params.tb_id == fen_info->tb_id &&
2228 fib_entry->params.tos == fen_info->tos &&
2229 fib_entry->params.type == fen_info->type &&
2230 fib_entry->nh_group->key.fi == fen_info->fi) {
2238 static const struct rhashtable_params mlxsw_sp_fib_ht_params = {
2239 .key_offset = offsetof(struct mlxsw_sp_fib_node, key),
2240 .head_offset = offsetof(struct mlxsw_sp_fib_node, ht_node),
2241 .key_len = sizeof(struct mlxsw_sp_fib_key),
2242 .automatic_shrinking = true,
2245 static int mlxsw_sp_fib_node_insert(struct mlxsw_sp_fib *fib,
2246 struct mlxsw_sp_fib_node *fib_node)
2248 return rhashtable_insert_fast(&fib->ht, &fib_node->ht_node,
2249 mlxsw_sp_fib_ht_params);
2252 static void mlxsw_sp_fib_node_remove(struct mlxsw_sp_fib *fib,
2253 struct mlxsw_sp_fib_node *fib_node)
2255 rhashtable_remove_fast(&fib->ht, &fib_node->ht_node,
2256 mlxsw_sp_fib_ht_params);
2259 static struct mlxsw_sp_fib_node *
2260 mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr,
2261 size_t addr_len, unsigned char prefix_len)
2263 struct mlxsw_sp_fib_key key;
2265 memset(&key, 0, sizeof(key));
2266 memcpy(key.addr, addr, addr_len);
2267 key.prefix_len = prefix_len;
2268 return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params);
2271 static struct mlxsw_sp_fib_node *
2272 mlxsw_sp_fib_node_create(struct mlxsw_sp_fib *fib, const void *addr,
2273 size_t addr_len, unsigned char prefix_len)
2275 struct mlxsw_sp_fib_node *fib_node;
2277 fib_node = kzalloc(sizeof(*fib_node), GFP_KERNEL);
2281 INIT_LIST_HEAD(&fib_node->entry_list);
2282 list_add(&fib_node->list, &fib->node_list);
2283 memcpy(fib_node->key.addr, addr, addr_len);
2284 fib_node->key.prefix_len = prefix_len;
2289 static void mlxsw_sp_fib_node_destroy(struct mlxsw_sp_fib_node *fib_node)
2291 list_del(&fib_node->list);
2292 WARN_ON(!list_empty(&fib_node->entry_list));
2297 mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node,
2298 const struct mlxsw_sp_fib_entry *fib_entry)
2300 return list_first_entry(&fib_node->entry_list,
2301 struct mlxsw_sp_fib_entry, list) == fib_entry;
2304 static void mlxsw_sp_fib_node_prefix_inc(struct mlxsw_sp_fib_node *fib_node)
2306 unsigned char prefix_len = fib_node->key.prefix_len;
2307 struct mlxsw_sp_fib *fib = fib_node->fib;
2309 if (fib->prefix_ref_count[prefix_len]++ == 0)
2310 mlxsw_sp_prefix_usage_set(&fib->prefix_usage, prefix_len);
2313 static void mlxsw_sp_fib_node_prefix_dec(struct mlxsw_sp_fib_node *fib_node)
2315 unsigned char prefix_len = fib_node->key.prefix_len;
2316 struct mlxsw_sp_fib *fib = fib_node->fib;
2318 if (--fib->prefix_ref_count[prefix_len] == 0)
2319 mlxsw_sp_prefix_usage_clear(&fib->prefix_usage, prefix_len);
2322 static int mlxsw_sp_fib_node_init(struct mlxsw_sp *mlxsw_sp,
2323 struct mlxsw_sp_fib_node *fib_node,
2324 struct mlxsw_sp_fib *fib)
2326 struct mlxsw_sp_prefix_usage req_prefix_usage;
2327 struct mlxsw_sp_lpm_tree *lpm_tree;
2330 err = mlxsw_sp_fib_node_insert(fib, fib_node);
2333 fib_node->fib = fib;
2335 mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, &fib->prefix_usage);
2336 mlxsw_sp_prefix_usage_set(&req_prefix_usage, fib_node->key.prefix_len);
2338 if (!mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) {
2339 err = mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib,
2342 goto err_tree_check;
2344 lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage,
2346 if (IS_ERR(lpm_tree))
2347 return PTR_ERR(lpm_tree);
2348 fib->lpm_tree = lpm_tree;
2349 err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib);
2354 mlxsw_sp_fib_node_prefix_inc(fib_node);
2359 fib->lpm_tree = NULL;
2360 mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree);
2362 fib_node->fib = NULL;
2363 mlxsw_sp_fib_node_remove(fib, fib_node);
2367 static void mlxsw_sp_fib_node_fini(struct mlxsw_sp *mlxsw_sp,
2368 struct mlxsw_sp_fib_node *fib_node)
2370 struct mlxsw_sp_lpm_tree *lpm_tree = fib_node->fib->lpm_tree;
2371 struct mlxsw_sp_fib *fib = fib_node->fib;
2373 mlxsw_sp_fib_node_prefix_dec(fib_node);
2375 if (mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) {
2376 mlxsw_sp_vr_lpm_tree_unbind(mlxsw_sp, fib);
2377 fib->lpm_tree = NULL;
2378 mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree);
2380 mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib, &fib->prefix_usage);
2383 fib_node->fib = NULL;
2384 mlxsw_sp_fib_node_remove(fib, fib_node);
2387 static struct mlxsw_sp_fib_node *
2388 mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp,
2389 const struct fib_entry_notifier_info *fen_info)
2391 struct mlxsw_sp_fib_node *fib_node;
2392 struct mlxsw_sp_fib *fib;
2393 struct mlxsw_sp_vr *vr;
2396 vr = mlxsw_sp_vr_get(mlxsw_sp, fen_info->tb_id);
2398 return ERR_CAST(vr);
2399 fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV4);
2401 fib_node = mlxsw_sp_fib_node_lookup(fib, &fen_info->dst,
2402 sizeof(fen_info->dst),
2407 fib_node = mlxsw_sp_fib_node_create(fib, &fen_info->dst,
2408 sizeof(fen_info->dst),
2412 goto err_fib_node_create;
2415 err = mlxsw_sp_fib_node_init(mlxsw_sp, fib_node, fib);
2417 goto err_fib_node_init;
2422 mlxsw_sp_fib_node_destroy(fib_node);
2423 err_fib_node_create:
2424 mlxsw_sp_vr_put(vr);
2425 return ERR_PTR(err);
2428 static void mlxsw_sp_fib4_node_put(struct mlxsw_sp *mlxsw_sp,
2429 struct mlxsw_sp_fib_node *fib_node)
2431 struct mlxsw_sp_vr *vr = fib_node->fib->vr;
2433 if (!list_empty(&fib_node->entry_list))
2435 mlxsw_sp_fib_node_fini(mlxsw_sp, fib_node);
2436 mlxsw_sp_fib_node_destroy(fib_node);
2437 mlxsw_sp_vr_put(vr);
2440 static struct mlxsw_sp_fib_entry *
2441 mlxsw_sp_fib4_node_entry_find(const struct mlxsw_sp_fib_node *fib_node,
2442 const struct mlxsw_sp_fib_entry_params *params)
2444 struct mlxsw_sp_fib_entry *fib_entry;
2446 list_for_each_entry(fib_entry, &fib_node->entry_list, list) {
2447 if (fib_entry->params.tb_id > params->tb_id)
2449 if (fib_entry->params.tb_id != params->tb_id)
2451 if (fib_entry->params.tos > params->tos)
2453 if (fib_entry->params.prio >= params->prio ||
2454 fib_entry->params.tos < params->tos)
2461 static int mlxsw_sp_fib4_node_list_append(struct mlxsw_sp_fib_entry *fib_entry,
2462 struct mlxsw_sp_fib_entry *new_entry)
2464 struct mlxsw_sp_fib_node *fib_node;
2466 if (WARN_ON(!fib_entry))
2469 fib_node = fib_entry->fib_node;
2470 list_for_each_entry_from(fib_entry, &fib_node->entry_list, list) {
2471 if (fib_entry->params.tb_id != new_entry->params.tb_id ||
2472 fib_entry->params.tos != new_entry->params.tos ||
2473 fib_entry->params.prio != new_entry->params.prio)
2477 list_add_tail(&new_entry->list, &fib_entry->list);
2482 mlxsw_sp_fib4_node_list_insert(struct mlxsw_sp_fib_node *fib_node,
2483 struct mlxsw_sp_fib_entry *new_entry,
2484 bool replace, bool append)
2486 struct mlxsw_sp_fib_entry *fib_entry;
2488 fib_entry = mlxsw_sp_fib4_node_entry_find(fib_node, &new_entry->params);
2491 return mlxsw_sp_fib4_node_list_append(fib_entry, new_entry);
2492 if (replace && WARN_ON(!fib_entry))
2495 /* Insert new entry before replaced one, so that we can later
2496 * remove the second.
2499 list_add_tail(&new_entry->list, &fib_entry->list);
2501 struct mlxsw_sp_fib_entry *last;
2503 list_for_each_entry(last, &fib_node->entry_list, list) {
2504 if (new_entry->params.tb_id > last->params.tb_id)
2510 list_add(&new_entry->list, &fib_entry->list);
2512 list_add(&new_entry->list, &fib_node->entry_list);
2519 mlxsw_sp_fib4_node_list_remove(struct mlxsw_sp_fib_entry *fib_entry)
2521 list_del(&fib_entry->list);
2525 mlxsw_sp_fib4_node_entry_add(struct mlxsw_sp *mlxsw_sp,
2526 const struct mlxsw_sp_fib_node *fib_node,
2527 struct mlxsw_sp_fib_entry *fib_entry)
2529 if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry))
2532 /* To prevent packet loss, overwrite the previously offloaded
2535 if (!list_is_singular(&fib_node->entry_list)) {
2536 enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE;
2537 struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list);
2539 mlxsw_sp_fib_entry_offload_refresh(n, op, 0);
2542 return mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry);
2546 mlxsw_sp_fib4_node_entry_del(struct mlxsw_sp *mlxsw_sp,
2547 const struct mlxsw_sp_fib_node *fib_node,
2548 struct mlxsw_sp_fib_entry *fib_entry)
2550 if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry))
2553 /* Promote the next entry by overwriting the deleted entry */
2554 if (!list_is_singular(&fib_node->entry_list)) {
2555 struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list);
2556 enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE;
2558 mlxsw_sp_fib_entry_update(mlxsw_sp, n);
2559 mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0);
2563 mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry);
2566 static int mlxsw_sp_fib4_node_entry_link(struct mlxsw_sp *mlxsw_sp,
2567 struct mlxsw_sp_fib_entry *fib_entry,
2568 bool replace, bool append)
2570 struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node;
2573 err = mlxsw_sp_fib4_node_list_insert(fib_node, fib_entry, replace,
2578 err = mlxsw_sp_fib4_node_entry_add(mlxsw_sp, fib_node, fib_entry);
2580 goto err_fib4_node_entry_add;
2584 err_fib4_node_entry_add:
2585 mlxsw_sp_fib4_node_list_remove(fib_entry);
2590 mlxsw_sp_fib4_node_entry_unlink(struct mlxsw_sp *mlxsw_sp,
2591 struct mlxsw_sp_fib_entry *fib_entry)
2593 struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node;
2595 mlxsw_sp_fib4_node_entry_del(mlxsw_sp, fib_node, fib_entry);
2596 mlxsw_sp_fib4_node_list_remove(fib_entry);
2599 static void mlxsw_sp_fib4_entry_replace(struct mlxsw_sp *mlxsw_sp,
2600 struct mlxsw_sp_fib_entry *fib_entry,
2603 struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node;
2604 struct mlxsw_sp_fib_entry *replaced;
2609 /* We inserted the new entry before replaced one */
2610 replaced = list_next_entry(fib_entry, list);
2612 mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, replaced);
2613 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, replaced);
2614 mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node);
2618 mlxsw_sp_router_fib4_add(struct mlxsw_sp *mlxsw_sp,
2619 const struct fib_entry_notifier_info *fen_info,
2620 bool replace, bool append)
2622 struct mlxsw_sp_fib_entry *fib_entry;
2623 struct mlxsw_sp_fib_node *fib_node;
2626 if (mlxsw_sp->router->aborted)
2629 fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info);
2630 if (IS_ERR(fib_node)) {
2631 dev_warn(mlxsw_sp->bus_info->dev, "Failed to get FIB node\n");
2632 return PTR_ERR(fib_node);
2635 fib_entry = mlxsw_sp_fib4_entry_create(mlxsw_sp, fib_node, fen_info);
2636 if (IS_ERR(fib_entry)) {
2637 dev_warn(mlxsw_sp->bus_info->dev, "Failed to create FIB entry\n");
2638 err = PTR_ERR(fib_entry);
2639 goto err_fib4_entry_create;
2642 err = mlxsw_sp_fib4_node_entry_link(mlxsw_sp, fib_entry, replace,
2645 dev_warn(mlxsw_sp->bus_info->dev, "Failed to link FIB entry to node\n");
2646 goto err_fib4_node_entry_link;
2649 mlxsw_sp_fib4_entry_replace(mlxsw_sp, fib_entry, replace);
2653 err_fib4_node_entry_link:
2654 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry);
2655 err_fib4_entry_create:
2656 mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node);
2660 static void mlxsw_sp_router_fib4_del(struct mlxsw_sp *mlxsw_sp,
2661 struct fib_entry_notifier_info *fen_info)
2663 struct mlxsw_sp_fib_entry *fib_entry;
2664 struct mlxsw_sp_fib_node *fib_node;
2666 if (mlxsw_sp->router->aborted)
2669 fib_entry = mlxsw_sp_fib4_entry_lookup(mlxsw_sp, fen_info);
2670 if (WARN_ON(!fib_entry))
2672 fib_node = fib_entry->fib_node;
2674 mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry);
2675 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry);
2676 mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node);
2679 static int mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp)
2681 char ralta_pl[MLXSW_REG_RALTA_LEN];
2682 char ralst_pl[MLXSW_REG_RALST_LEN];
2685 mlxsw_reg_ralta_pack(ralta_pl, true, MLXSW_REG_RALXX_PROTOCOL_IPV4,
2686 MLXSW_SP_LPM_TREE_MIN);
2687 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl);
2691 mlxsw_reg_ralst_pack(ralst_pl, 0xff, MLXSW_SP_LPM_TREE_MIN);
2692 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl);
2696 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
2697 struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i];
2698 char raltb_pl[MLXSW_REG_RALTB_LEN];
2699 char ralue_pl[MLXSW_REG_RALUE_LEN];
2701 if (!mlxsw_sp_vr_is_used(vr))
2704 mlxsw_reg_raltb_pack(raltb_pl, vr->id,
2705 MLXSW_REG_RALXX_PROTOCOL_IPV4,
2706 MLXSW_SP_LPM_TREE_MIN);
2707 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb),
2712 mlxsw_reg_ralue_pack4(ralue_pl, MLXSW_SP_L3_PROTO_IPV4,
2713 MLXSW_REG_RALUE_OP_WRITE_WRITE, vr->id, 0,
2715 mlxsw_reg_ralue_act_ip2me_pack(ralue_pl);
2716 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue),
2725 static void mlxsw_sp_fib4_node_flush(struct mlxsw_sp *mlxsw_sp,
2726 struct mlxsw_sp_fib_node *fib_node)
2728 struct mlxsw_sp_fib_entry *fib_entry, *tmp;
2730 list_for_each_entry_safe(fib_entry, tmp, &fib_node->entry_list, list) {
2731 bool do_break = &tmp->list == &fib_node->entry_list;
2733 mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry);
2734 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry);
2735 mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node);
2736 /* Break when entry list is empty and node was freed.
2737 * Otherwise, we'll access freed memory in the next
2745 static void mlxsw_sp_fib_node_flush(struct mlxsw_sp *mlxsw_sp,
2746 struct mlxsw_sp_fib_node *fib_node)
2748 switch (fib_node->fib->proto) {
2749 case MLXSW_SP_L3_PROTO_IPV4:
2750 mlxsw_sp_fib4_node_flush(mlxsw_sp, fib_node);
2752 case MLXSW_SP_L3_PROTO_IPV6:
2758 static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp,
2759 struct mlxsw_sp_vr *vr,
2760 enum mlxsw_sp_l3proto proto)
2762 struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto);
2763 struct mlxsw_sp_fib_node *fib_node, *tmp;
2765 list_for_each_entry_safe(fib_node, tmp, &fib->node_list, list) {
2766 bool do_break = &tmp->list == &fib->node_list;
2768 mlxsw_sp_fib_node_flush(mlxsw_sp, fib_node);
2774 static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp)
2778 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
2779 struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i];
2781 if (!mlxsw_sp_vr_is_used(vr))
2783 mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4);
2787 static void mlxsw_sp_router_fib4_abort(struct mlxsw_sp *mlxsw_sp)
2791 if (mlxsw_sp->router->aborted)
2793 dev_warn(mlxsw_sp->bus_info->dev, "FIB abort triggered. Note that FIB entries are no longer being offloaded to this device.\n");
2794 mlxsw_sp_router_fib_flush(mlxsw_sp);
2795 mlxsw_sp->router->aborted = true;
2796 err = mlxsw_sp_router_set_abort_trap(mlxsw_sp);
2798 dev_warn(mlxsw_sp->bus_info->dev, "Failed to set abort trap.\n");
2801 struct mlxsw_sp_fib_event_work {
2802 struct work_struct work;
2804 struct fib_entry_notifier_info fen_info;
2805 struct fib_rule_notifier_info fr_info;
2806 struct fib_nh_notifier_info fnh_info;
2808 struct mlxsw_sp *mlxsw_sp;
2809 unsigned long event;
2812 static void mlxsw_sp_router_fib_event_work(struct work_struct *work)
2814 struct mlxsw_sp_fib_event_work *fib_work =
2815 container_of(work, struct mlxsw_sp_fib_event_work, work);
2816 struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp;
2817 struct fib_rule *rule;
2818 bool replace, append;
2821 /* Protect internal structures from changes */
2823 switch (fib_work->event) {
2824 case FIB_EVENT_ENTRY_REPLACE: /* fall through */
2825 case FIB_EVENT_ENTRY_APPEND: /* fall through */
2826 case FIB_EVENT_ENTRY_ADD:
2827 replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE;
2828 append = fib_work->event == FIB_EVENT_ENTRY_APPEND;
2829 err = mlxsw_sp_router_fib4_add(mlxsw_sp, &fib_work->fen_info,
2832 mlxsw_sp_router_fib4_abort(mlxsw_sp);
2833 fib_info_put(fib_work->fen_info.fi);
2835 case FIB_EVENT_ENTRY_DEL:
2836 mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info);
2837 fib_info_put(fib_work->fen_info.fi);
2839 case FIB_EVENT_RULE_ADD: /* fall through */
2840 case FIB_EVENT_RULE_DEL:
2841 rule = fib_work->fr_info.rule;
2842 if (!fib4_rule_default(rule) && !rule->l3mdev)
2843 mlxsw_sp_router_fib4_abort(mlxsw_sp);
2846 case FIB_EVENT_NH_ADD: /* fall through */
2847 case FIB_EVENT_NH_DEL:
2848 mlxsw_sp_nexthop_event(mlxsw_sp, fib_work->event,
2849 fib_work->fnh_info.fib_nh);
2850 fib_info_put(fib_work->fnh_info.fib_nh->nh_parent);
2857 /* Called with rcu_read_lock() */
2858 static int mlxsw_sp_router_fib_event(struct notifier_block *nb,
2859 unsigned long event, void *ptr)
2861 struct mlxsw_sp_fib_event_work *fib_work;
2862 struct fib_notifier_info *info = ptr;
2863 struct mlxsw_sp_router *router;
2865 if (!net_eq(info->net, &init_net))
2868 fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC);
2869 if (WARN_ON(!fib_work))
2872 INIT_WORK(&fib_work->work, mlxsw_sp_router_fib_event_work);
2873 router = container_of(nb, struct mlxsw_sp_router, fib_nb);
2874 fib_work->mlxsw_sp = router->mlxsw_sp;
2875 fib_work->event = event;
2878 case FIB_EVENT_ENTRY_REPLACE: /* fall through */
2879 case FIB_EVENT_ENTRY_APPEND: /* fall through */
2880 case FIB_EVENT_ENTRY_ADD: /* fall through */
2881 case FIB_EVENT_ENTRY_DEL:
2882 memcpy(&fib_work->fen_info, ptr, sizeof(fib_work->fen_info));
2883 /* Take referece on fib_info to prevent it from being
2884 * freed while work is queued. Release it afterwards.
2886 fib_info_hold(fib_work->fen_info.fi);
2888 case FIB_EVENT_RULE_ADD: /* fall through */
2889 case FIB_EVENT_RULE_DEL:
2890 memcpy(&fib_work->fr_info, ptr, sizeof(fib_work->fr_info));
2891 fib_rule_get(fib_work->fr_info.rule);
2893 case FIB_EVENT_NH_ADD: /* fall through */
2894 case FIB_EVENT_NH_DEL:
2895 memcpy(&fib_work->fnh_info, ptr, sizeof(fib_work->fnh_info));
2896 fib_info_hold(fib_work->fnh_info.fib_nh->nh_parent);
2900 mlxsw_core_schedule_work(&fib_work->work);
2905 static struct mlxsw_sp_rif *
2906 mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp,
2907 const struct net_device *dev)
2911 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++)
2912 if (mlxsw_sp->router->rifs[i] &&
2913 mlxsw_sp->router->rifs[i]->dev == dev)
2914 return mlxsw_sp->router->rifs[i];
2919 static int mlxsw_sp_router_rif_disable(struct mlxsw_sp *mlxsw_sp, u16 rif)
2921 char ritr_pl[MLXSW_REG_RITR_LEN];
2924 mlxsw_reg_ritr_rif_pack(ritr_pl, rif);
2925 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
2926 if (WARN_ON_ONCE(err))
2929 mlxsw_reg_ritr_enable_set(ritr_pl, false);
2930 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
2933 static void mlxsw_sp_router_rif_gone_sync(struct mlxsw_sp *mlxsw_sp,
2934 struct mlxsw_sp_rif *rif)
2936 mlxsw_sp_router_rif_disable(mlxsw_sp, rif->rif_index);
2937 mlxsw_sp_nexthop_rif_gone_sync(mlxsw_sp, rif);
2938 mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, rif);
2941 static bool mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *rif,
2942 const struct in_device *in_dev,
2943 unsigned long event)
2951 if (rif && !in_dev->ifa_list &&
2952 !netif_is_l3_slave(rif->dev))
2954 /* It is possible we already removed the RIF ourselves
2955 * if it was assigned to a netdev that is now a bridge
2964 static enum mlxsw_sp_rif_type
2965 mlxsw_sp_dev_rif_type(const struct mlxsw_sp *mlxsw_sp,
2966 const struct net_device *dev)
2968 enum mlxsw_sp_fid_type type;
2970 /* RIF type is derived from the type of the underlying FID */
2971 if (is_vlan_dev(dev) && netif_is_bridge_master(vlan_dev_real_dev(dev)))
2972 type = MLXSW_SP_FID_TYPE_8021Q;
2973 else if (netif_is_bridge_master(dev) && br_vlan_enabled(dev))
2974 type = MLXSW_SP_FID_TYPE_8021Q;
2975 else if (netif_is_bridge_master(dev))
2976 type = MLXSW_SP_FID_TYPE_8021D;
2978 type = MLXSW_SP_FID_TYPE_RFID;
2980 return mlxsw_sp_fid_type_rif_type(mlxsw_sp, type);
2983 static int mlxsw_sp_rif_index_alloc(struct mlxsw_sp *mlxsw_sp, u16 *p_rif_index)
2987 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) {
2988 if (!mlxsw_sp->router->rifs[i]) {
2997 static struct mlxsw_sp_rif *mlxsw_sp_rif_alloc(size_t rif_size, u16 rif_index,
2999 struct net_device *l3_dev)
3001 struct mlxsw_sp_rif *rif;
3003 rif = kzalloc(rif_size, GFP_KERNEL);
3007 INIT_LIST_HEAD(&rif->nexthop_list);
3008 INIT_LIST_HEAD(&rif->neigh_list);
3009 ether_addr_copy(rif->addr, l3_dev->dev_addr);
3010 rif->mtu = l3_dev->mtu;
3013 rif->rif_index = rif_index;
3018 struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp,
3021 return mlxsw_sp->router->rifs[rif_index];
3024 u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif)
3026 return rif->rif_index;
3029 int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif)
3031 return rif->dev->ifindex;
3034 static struct mlxsw_sp_rif *
3035 mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp,
3036 const struct mlxsw_sp_rif_params *params)
3038 u32 tb_id = l3mdev_fib_table(params->dev);
3039 const struct mlxsw_sp_rif_ops *ops;
3040 enum mlxsw_sp_rif_type type;
3041 struct mlxsw_sp_rif *rif;
3042 struct mlxsw_sp_fid *fid;
3043 struct mlxsw_sp_vr *vr;
3047 type = mlxsw_sp_dev_rif_type(mlxsw_sp, params->dev);
3048 ops = mlxsw_sp->router->rif_ops_arr[type];
3050 vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN);
3052 return ERR_CAST(vr);
3054 err = mlxsw_sp_rif_index_alloc(mlxsw_sp, &rif_index);
3056 goto err_rif_index_alloc;
3058 rif = mlxsw_sp_rif_alloc(ops->rif_size, rif_index, vr->id, params->dev);
3063 rif->mlxsw_sp = mlxsw_sp;
3066 fid = ops->fid_get(rif);
3074 ops->setup(rif, params);
3076 err = ops->configure(rif);
3080 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, params->dev->dev_addr,
3081 mlxsw_sp_fid_index(fid), true);
3083 goto err_rif_fdb_op;
3085 mlxsw_sp_rif_counters_alloc(rif);
3086 mlxsw_sp_fid_rif_set(fid, rif);
3087 mlxsw_sp->router->rifs[rif_index] = rif;
3093 ops->deconfigure(rif);
3095 mlxsw_sp_fid_put(fid);
3099 err_rif_index_alloc:
3100 mlxsw_sp_vr_put(vr);
3101 return ERR_PTR(err);
3104 void mlxsw_sp_rif_destroy(struct mlxsw_sp_rif *rif)
3106 const struct mlxsw_sp_rif_ops *ops = rif->ops;
3107 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3108 struct mlxsw_sp_fid *fid = rif->fid;
3109 struct mlxsw_sp_vr *vr;
3111 mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif);
3112 vr = &mlxsw_sp->router->vrs[rif->vr_id];
3115 mlxsw_sp->router->rifs[rif->rif_index] = NULL;
3116 mlxsw_sp_fid_rif_set(fid, NULL);
3117 mlxsw_sp_rif_counters_free(rif);
3118 mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->dev->dev_addr,
3119 mlxsw_sp_fid_index(fid), false);
3120 ops->deconfigure(rif);
3121 mlxsw_sp_fid_put(fid);
3123 mlxsw_sp_vr_put(vr);
3127 mlxsw_sp_rif_subport_params_init(struct mlxsw_sp_rif_params *params,
3128 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
3130 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
3132 params->vid = mlxsw_sp_port_vlan->vid;
3133 params->lag = mlxsw_sp_port->lagged;
3135 params->lag_id = mlxsw_sp_port->lag_id;
3137 params->system_port = mlxsw_sp_port->local_port;
3141 mlxsw_sp_port_vlan_router_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan,
3142 struct net_device *l3_dev)
3144 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
3145 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3146 u16 vid = mlxsw_sp_port_vlan->vid;
3147 struct mlxsw_sp_rif *rif;
3148 struct mlxsw_sp_fid *fid;
3151 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
3153 struct mlxsw_sp_rif_params params = {
3157 mlxsw_sp_rif_subport_params_init(¶ms, mlxsw_sp_port_vlan);
3158 rif = mlxsw_sp_rif_create(mlxsw_sp, ¶ms);
3160 return PTR_ERR(rif);
3163 /* FID was already created, just take a reference */
3164 fid = rif->ops->fid_get(rif);
3165 err = mlxsw_sp_fid_port_vid_map(fid, mlxsw_sp_port, vid);
3167 goto err_fid_port_vid_map;
3169 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false);
3171 goto err_port_vid_learning_set;
3173 err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid,
3174 BR_STATE_FORWARDING);
3176 goto err_port_vid_stp_set;
3178 mlxsw_sp_port_vlan->fid = fid;
3182 err_port_vid_stp_set:
3183 mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true);
3184 err_port_vid_learning_set:
3185 mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid);
3186 err_fid_port_vid_map:
3187 mlxsw_sp_fid_put(fid);
3192 mlxsw_sp_port_vlan_router_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
3194 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
3195 struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid;
3196 u16 vid = mlxsw_sp_port_vlan->vid;
3198 if (WARN_ON(mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_RFID))
3201 mlxsw_sp_port_vlan->fid = NULL;
3202 mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_BLOCKING);
3203 mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true);
3204 mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid);
3205 /* If router port holds the last reference on the rFID, then the
3206 * associated Sub-port RIF will be destroyed.
3208 mlxsw_sp_fid_put(fid);
3211 static int mlxsw_sp_inetaddr_port_vlan_event(struct net_device *l3_dev,
3212 struct net_device *port_dev,
3213 unsigned long event, u16 vid)
3215 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev);
3216 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
3218 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
3219 if (WARN_ON(!mlxsw_sp_port_vlan))
3224 return mlxsw_sp_port_vlan_router_join(mlxsw_sp_port_vlan,
3227 mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan);
3234 static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev,
3235 unsigned long event)
3237 if (netif_is_bridge_port(port_dev) ||
3238 netif_is_lag_port(port_dev) ||
3239 netif_is_ovs_port(port_dev))
3242 return mlxsw_sp_inetaddr_port_vlan_event(port_dev, port_dev, event, 1);
3245 static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev,
3246 struct net_device *lag_dev,
3247 unsigned long event, u16 vid)
3249 struct net_device *port_dev;
3250 struct list_head *iter;
3253 netdev_for_each_lower_dev(lag_dev, port_dev, iter) {
3254 if (mlxsw_sp_port_dev_check(port_dev)) {
3255 err = mlxsw_sp_inetaddr_port_vlan_event(l3_dev,
3266 static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev,
3267 unsigned long event)
3269 if (netif_is_bridge_port(lag_dev))
3272 return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1);
3275 static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev,
3276 unsigned long event)
3278 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev);
3279 struct mlxsw_sp_rif_params params = {
3282 struct mlxsw_sp_rif *rif;
3286 rif = mlxsw_sp_rif_create(mlxsw_sp, ¶ms);
3288 return PTR_ERR(rif);
3291 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
3292 mlxsw_sp_rif_destroy(rif);
3299 static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev,
3300 unsigned long event)
3302 struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
3303 u16 vid = vlan_dev_vlan_id(vlan_dev);
3305 if (netif_is_bridge_port(vlan_dev))
3308 if (mlxsw_sp_port_dev_check(real_dev))
3309 return mlxsw_sp_inetaddr_port_vlan_event(vlan_dev, real_dev,
3311 else if (netif_is_lag_master(real_dev))
3312 return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event,
3314 else if (netif_is_bridge_master(real_dev) && br_vlan_enabled(real_dev))
3315 return mlxsw_sp_inetaddr_bridge_event(vlan_dev, event);
3320 static int __mlxsw_sp_inetaddr_event(struct net_device *dev,
3321 unsigned long event)
3323 if (mlxsw_sp_port_dev_check(dev))
3324 return mlxsw_sp_inetaddr_port_event(dev, event);
3325 else if (netif_is_lag_master(dev))
3326 return mlxsw_sp_inetaddr_lag_event(dev, event);
3327 else if (netif_is_bridge_master(dev))
3328 return mlxsw_sp_inetaddr_bridge_event(dev, event);
3329 else if (is_vlan_dev(dev))
3330 return mlxsw_sp_inetaddr_vlan_event(dev, event);
3335 int mlxsw_sp_inetaddr_event(struct notifier_block *unused,
3336 unsigned long event, void *ptr)
3338 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3339 struct net_device *dev = ifa->ifa_dev->dev;
3340 struct mlxsw_sp *mlxsw_sp;
3341 struct mlxsw_sp_rif *rif;
3344 mlxsw_sp = mlxsw_sp_lower_get(dev);
3348 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
3349 if (!mlxsw_sp_rif_should_config(rif, ifa->ifa_dev, event))
3352 err = __mlxsw_sp_inetaddr_event(dev, event);
3354 return notifier_from_errno(err);
3357 static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index,
3358 const char *mac, int mtu)
3360 char ritr_pl[MLXSW_REG_RITR_LEN];
3363 mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index);
3364 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3368 mlxsw_reg_ritr_mtu_set(ritr_pl, mtu);
3369 mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac);
3370 mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE);
3371 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3374 int mlxsw_sp_netdevice_router_port_event(struct net_device *dev)
3376 struct mlxsw_sp *mlxsw_sp;
3377 struct mlxsw_sp_rif *rif;
3381 mlxsw_sp = mlxsw_sp_lower_get(dev);
3385 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
3388 fid_index = mlxsw_sp_fid_index(rif->fid);
3390 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, false);
3394 err = mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, dev->dev_addr,
3399 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, fid_index, true);
3401 goto err_rif_fdb_op;
3403 ether_addr_copy(rif->addr, dev->dev_addr);
3404 rif->mtu = dev->mtu;
3406 netdev_dbg(dev, "Updated RIF=%d\n", rif->rif_index);
3411 mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, rif->addr, rif->mtu);
3413 mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, true);
3417 static int mlxsw_sp_port_vrf_join(struct mlxsw_sp *mlxsw_sp,
3418 struct net_device *l3_dev)
3420 struct mlxsw_sp_rif *rif;
3422 /* If netdev is already associated with a RIF, then we need to
3423 * destroy it and create a new one with the new virtual router ID.
3425 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
3427 __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN);
3429 return __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_UP);
3432 static void mlxsw_sp_port_vrf_leave(struct mlxsw_sp *mlxsw_sp,
3433 struct net_device *l3_dev)
3435 struct mlxsw_sp_rif *rif;
3437 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
3440 __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN);
3443 int mlxsw_sp_netdevice_vrf_event(struct net_device *l3_dev, unsigned long event,
3444 struct netdev_notifier_changeupper_info *info)
3446 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev);
3453 case NETDEV_PRECHANGEUPPER:
3455 case NETDEV_CHANGEUPPER:
3457 err = mlxsw_sp_port_vrf_join(mlxsw_sp, l3_dev);
3459 mlxsw_sp_port_vrf_leave(mlxsw_sp, l3_dev);
3466 static struct mlxsw_sp_rif_subport *
3467 mlxsw_sp_rif_subport_rif(const struct mlxsw_sp_rif *rif)
3469 return container_of(rif, struct mlxsw_sp_rif_subport, common);
3472 static void mlxsw_sp_rif_subport_setup(struct mlxsw_sp_rif *rif,
3473 const struct mlxsw_sp_rif_params *params)
3475 struct mlxsw_sp_rif_subport *rif_subport;
3477 rif_subport = mlxsw_sp_rif_subport_rif(rif);
3478 rif_subport->vid = params->vid;
3479 rif_subport->lag = params->lag;
3481 rif_subport->lag_id = params->lag_id;
3483 rif_subport->system_port = params->system_port;
3486 static int mlxsw_sp_rif_subport_op(struct mlxsw_sp_rif *rif, bool enable)
3488 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3489 struct mlxsw_sp_rif_subport *rif_subport;
3490 char ritr_pl[MLXSW_REG_RITR_LEN];
3492 rif_subport = mlxsw_sp_rif_subport_rif(rif);
3493 mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_SP_IF,
3494 rif->rif_index, rif->vr_id, rif->dev->mtu,
3495 rif->dev->dev_addr);
3496 mlxsw_reg_ritr_sp_if_pack(ritr_pl, rif_subport->lag,
3497 rif_subport->lag ? rif_subport->lag_id :
3498 rif_subport->system_port,
3501 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3504 static int mlxsw_sp_rif_subport_configure(struct mlxsw_sp_rif *rif)
3506 return mlxsw_sp_rif_subport_op(rif, true);
3509 static void mlxsw_sp_rif_subport_deconfigure(struct mlxsw_sp_rif *rif)
3511 mlxsw_sp_rif_subport_op(rif, false);
3514 static struct mlxsw_sp_fid *
3515 mlxsw_sp_rif_subport_fid_get(struct mlxsw_sp_rif *rif)
3517 return mlxsw_sp_fid_rfid_get(rif->mlxsw_sp, rif->rif_index);
3520 static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_subport_ops = {
3521 .type = MLXSW_SP_RIF_TYPE_SUBPORT,
3522 .rif_size = sizeof(struct mlxsw_sp_rif_subport),
3523 .setup = mlxsw_sp_rif_subport_setup,
3524 .configure = mlxsw_sp_rif_subport_configure,
3525 .deconfigure = mlxsw_sp_rif_subport_deconfigure,
3526 .fid_get = mlxsw_sp_rif_subport_fid_get,
3529 static int mlxsw_sp_rif_vlan_fid_op(struct mlxsw_sp_rif *rif,
3530 enum mlxsw_reg_ritr_if_type type,
3531 u16 vid_fid, bool enable)
3533 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3534 char ritr_pl[MLXSW_REG_RITR_LEN];
3536 mlxsw_reg_ritr_pack(ritr_pl, enable, type, rif->rif_index, rif->vr_id,
3537 rif->dev->mtu, rif->dev->dev_addr);
3538 mlxsw_reg_ritr_fid_set(ritr_pl, type, vid_fid);
3540 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3543 static u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp)
3545 return mlxsw_core_max_ports(mlxsw_sp->core) + 1;
3548 static int mlxsw_sp_rif_vlan_configure(struct mlxsw_sp_rif *rif)
3550 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3551 u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid);
3554 err = mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, true);
3558 err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
3559 mlxsw_sp_router_port(mlxsw_sp), true);
3561 goto err_fid_bc_flood_set;
3565 err_fid_bc_flood_set:
3566 mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, false);
3570 static void mlxsw_sp_rif_vlan_deconfigure(struct mlxsw_sp_rif *rif)
3572 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3573 u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid);
3575 mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
3576 mlxsw_sp_router_port(mlxsw_sp), false);
3577 mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, false);
3580 static struct mlxsw_sp_fid *
3581 mlxsw_sp_rif_vlan_fid_get(struct mlxsw_sp_rif *rif)
3583 u16 vid = is_vlan_dev(rif->dev) ? vlan_dev_vlan_id(rif->dev) : 1;
3585 return mlxsw_sp_fid_8021q_get(rif->mlxsw_sp, vid);
3588 static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_vlan_ops = {
3589 .type = MLXSW_SP_RIF_TYPE_VLAN,
3590 .rif_size = sizeof(struct mlxsw_sp_rif),
3591 .configure = mlxsw_sp_rif_vlan_configure,
3592 .deconfigure = mlxsw_sp_rif_vlan_deconfigure,
3593 .fid_get = mlxsw_sp_rif_vlan_fid_get,
3596 static int mlxsw_sp_rif_fid_configure(struct mlxsw_sp_rif *rif)
3598 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3599 u16 fid_index = mlxsw_sp_fid_index(rif->fid);
3602 err = mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index,
3607 err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
3608 mlxsw_sp_router_port(mlxsw_sp), true);
3610 goto err_fid_bc_flood_set;
3614 err_fid_bc_flood_set:
3615 mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, false);
3619 static void mlxsw_sp_rif_fid_deconfigure(struct mlxsw_sp_rif *rif)
3621 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3622 u16 fid_index = mlxsw_sp_fid_index(rif->fid);
3624 mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
3625 mlxsw_sp_router_port(mlxsw_sp), false);
3626 mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, false);
3629 static struct mlxsw_sp_fid *
3630 mlxsw_sp_rif_fid_fid_get(struct mlxsw_sp_rif *rif)
3632 return mlxsw_sp_fid_8021d_get(rif->mlxsw_sp, rif->dev->ifindex);
3635 static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_fid_ops = {
3636 .type = MLXSW_SP_RIF_TYPE_FID,
3637 .rif_size = sizeof(struct mlxsw_sp_rif),
3638 .configure = mlxsw_sp_rif_fid_configure,
3639 .deconfigure = mlxsw_sp_rif_fid_deconfigure,
3640 .fid_get = mlxsw_sp_rif_fid_fid_get,
3643 static const struct mlxsw_sp_rif_ops *mlxsw_sp_rif_ops_arr[] = {
3644 [MLXSW_SP_RIF_TYPE_SUBPORT] = &mlxsw_sp_rif_subport_ops,
3645 [MLXSW_SP_RIF_TYPE_VLAN] = &mlxsw_sp_rif_vlan_ops,
3646 [MLXSW_SP_RIF_TYPE_FID] = &mlxsw_sp_rif_fid_ops,
3649 static int mlxsw_sp_rifs_init(struct mlxsw_sp *mlxsw_sp)
3651 u64 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS);
3653 mlxsw_sp->router->rifs = kcalloc(max_rifs,
3654 sizeof(struct mlxsw_sp_rif *),
3656 if (!mlxsw_sp->router->rifs)
3659 mlxsw_sp->router->rif_ops_arr = mlxsw_sp_rif_ops_arr;
3664 static void mlxsw_sp_rifs_fini(struct mlxsw_sp *mlxsw_sp)
3668 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++)
3669 WARN_ON_ONCE(mlxsw_sp->router->rifs[i]);
3671 kfree(mlxsw_sp->router->rifs);
3674 static void mlxsw_sp_router_fib_dump_flush(struct notifier_block *nb)
3676 struct mlxsw_sp_router *router;
3678 /* Flush pending FIB notifications and then flush the device's
3679 * table before requesting another dump. The FIB notification
3680 * block is unregistered, so no need to take RTNL.
3682 mlxsw_core_flush_owq();
3683 router = container_of(nb, struct mlxsw_sp_router, fib_nb);
3684 mlxsw_sp_router_fib_flush(router->mlxsw_sp);
3687 static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp)
3689 char rgcr_pl[MLXSW_REG_RGCR_LEN];
3693 if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS))
3695 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS);
3697 mlxsw_reg_rgcr_pack(rgcr_pl, true);
3698 mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs);
3699 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl);
3705 static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp)
3707 char rgcr_pl[MLXSW_REG_RGCR_LEN];
3709 mlxsw_reg_rgcr_pack(rgcr_pl, false);
3710 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl);
3713 int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp)
3715 struct mlxsw_sp_router *router;
3718 router = kzalloc(sizeof(*mlxsw_sp->router), GFP_KERNEL);
3721 mlxsw_sp->router = router;
3722 router->mlxsw_sp = mlxsw_sp;
3724 INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_neighs_list);
3725 err = __mlxsw_sp_router_init(mlxsw_sp);
3727 goto err_router_init;
3729 err = mlxsw_sp_rifs_init(mlxsw_sp);
3733 err = rhashtable_init(&mlxsw_sp->router->nexthop_ht,
3734 &mlxsw_sp_nexthop_ht_params);
3736 goto err_nexthop_ht_init;
3738 err = rhashtable_init(&mlxsw_sp->router->nexthop_group_ht,
3739 &mlxsw_sp_nexthop_group_ht_params);
3741 goto err_nexthop_group_ht_init;
3743 err = mlxsw_sp_lpm_init(mlxsw_sp);
3747 err = mlxsw_sp_vrs_init(mlxsw_sp);
3751 err = mlxsw_sp_neigh_init(mlxsw_sp);
3753 goto err_neigh_init;
3755 mlxsw_sp->router->fib_nb.notifier_call = mlxsw_sp_router_fib_event;
3756 err = register_fib_notifier(&mlxsw_sp->router->fib_nb,
3757 mlxsw_sp_router_fib_dump_flush);
3759 goto err_register_fib_notifier;
3763 err_register_fib_notifier:
3764 mlxsw_sp_neigh_fini(mlxsw_sp);
3766 mlxsw_sp_vrs_fini(mlxsw_sp);
3768 mlxsw_sp_lpm_fini(mlxsw_sp);
3770 rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht);
3771 err_nexthop_group_ht_init:
3772 rhashtable_destroy(&mlxsw_sp->router->nexthop_ht);
3773 err_nexthop_ht_init:
3774 mlxsw_sp_rifs_fini(mlxsw_sp);
3776 __mlxsw_sp_router_fini(mlxsw_sp);
3778 kfree(mlxsw_sp->router);
3782 void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp)
3784 unregister_fib_notifier(&mlxsw_sp->router->fib_nb);
3785 mlxsw_sp_neigh_fini(mlxsw_sp);
3786 mlxsw_sp_vrs_fini(mlxsw_sp);
3787 mlxsw_sp_lpm_fini(mlxsw_sp);
3788 rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht);
3789 rhashtable_destroy(&mlxsw_sp->router->nexthop_ht);
3790 mlxsw_sp_rifs_fini(mlxsw_sp);
3791 __mlxsw_sp_router_fini(mlxsw_sp);
3792 kfree(mlxsw_sp->router);