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mlxsw: spectrum: Add support for IPv6 traps
[mirror_ubuntu-bionic-kernel.git] / drivers / net / ethernet / mellanox / mlxsw / spectrum_router.c
CommitLineData
464dce18
IS		 1/*
2 * drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
3 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
5 * Copyright (c) 2016 Ido Schimmel <idosch@mellanox.com>
c723c735 6 * Copyright (c) 2016 Yotam Gigi <yotamg@mellanox.com>
464dce18
IS		 7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the names of the copyright holders nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#include <linux/kernel.h>
38#include <linux/types.h>
5e9c16cc
JP		 39#include <linux/rhashtable.h>
40#include <linux/bitops.h>
41#include <linux/in6.h>
c723c735 42#include <linux/notifier.h>
df6dd79b 43#include <linux/inetdevice.h>
9db032bb 44#include <linux/netdevice.h>
03ea01e9 45#include <linux/if_bridge.h>
c723c735 46#include <net/netevent.h>
6cf3c971
JP		 47#include <net/neighbour.h>
48#include <net/arp.h>
b45f64d1 49#include <net/ip_fib.h>
5d7bfd14 50#include <net/fib_rules.h>
57837885 51#include <net/l3mdev.h>
464dce18
IS		 52
53#include "spectrum.h"
54#include "core.h"
55#include "reg.h"
e0c0afd8
AS		 56#include "spectrum_cnt.h"
57#include "spectrum_dpipe.h"
58#include "spectrum_router.h"
464dce18 59
9011b677
IS		 60struct mlxsw_sp_vr;
61struct mlxsw_sp_lpm_tree;
e4f3c1c1 62struct mlxsw_sp_rif_ops;
9011b677
IS		 63
64struct mlxsw_sp_router {
65 struct mlxsw_sp *mlxsw_sp;
5f9efffb 66 struct mlxsw_sp_rif **rifs;
9011b677
IS		 67 struct mlxsw_sp_vr *vrs;
68 struct rhashtable neigh_ht;
69 struct rhashtable nexthop_group_ht;
70 struct rhashtable nexthop_ht;
71 struct {
72 struct mlxsw_sp_lpm_tree *trees;
73 unsigned int tree_count;
74 } lpm;
75 struct {
76 struct delayed_work dw;
77 unsigned long interval; /* ms */
78 } neighs_update;
79 struct delayed_work nexthop_probe_dw;
80#define MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL 5000 /* ms */
81 struct list_head nexthop_neighs_list;
82 bool aborted;
7e39d115 83 struct notifier_block fib_nb;
e4f3c1c1 84 const struct mlxsw_sp_rif_ops **rif_ops_arr;
9011b677
IS		 85};
86
4724ba56
IS		 87struct mlxsw_sp_rif {
88 struct list_head nexthop_list;
89 struct list_head neigh_list;
90 struct net_device *dev;
a1107487 91 struct mlxsw_sp_fid *fid;
4724ba56
IS		 92 unsigned char addr[ETH_ALEN];
93 int mtu;
bf95233e 94 u16 rif_index;
6913229e 95 u16 vr_id;
e4f3c1c1
IS		 96 const struct mlxsw_sp_rif_ops *ops;
97 struct mlxsw_sp *mlxsw_sp;
98
e0c0afd8
AS		 99 unsigned int counter_ingress;
100 bool counter_ingress_valid;
101 unsigned int counter_egress;
102 bool counter_egress_valid;
4724ba56
IS		 103};
104
e4f3c1c1
IS		 105struct mlxsw_sp_rif_params {
106 struct net_device *dev;
107 union {
108 u16 system_port;
109 u16 lag_id;
110 };
111 u16 vid;
112 bool lag;
113};
114
4d93ceeb
IS		 115struct mlxsw_sp_rif_subport {
116 struct mlxsw_sp_rif common;
117 union {
118 u16 system_port;
119 u16 lag_id;
120 };
121 u16 vid;
122 bool lag;
123};
124
e4f3c1c1
IS		 125struct mlxsw_sp_rif_ops {
126 enum mlxsw_sp_rif_type type;
127 size_t rif_size;
128
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);
134};
135
e0c0afd8
AS		 136static unsigned int *
137mlxsw_sp_rif_p_counter_get(struct mlxsw_sp_rif *rif,
138 enum mlxsw_sp_rif_counter_dir dir)
139{
140 switch (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;
145 }
146 return NULL;
147}
148
149static bool
150mlxsw_sp_rif_counter_valid_get(struct mlxsw_sp_rif *rif,
151 enum mlxsw_sp_rif_counter_dir dir)
152{
153 switch (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;
158 }
159 return false;
160}
161
162static void
163mlxsw_sp_rif_counter_valid_set(struct mlxsw_sp_rif *rif,
164 enum mlxsw_sp_rif_counter_dir dir,
165 bool valid)
166{
167 switch (dir) {
168 case MLXSW_SP_RIF_COUNTER_EGRESS:
169 rif->counter_egress_valid = valid;
170 break;
171 case MLXSW_SP_RIF_COUNTER_INGRESS:
172 rif->counter_ingress_valid = valid;
173 break;
174 }
175}
176
177static 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)
180{
181 char ritr_pl[MLXSW_REG_RITR_LEN];
182 bool is_egress = false;
183 int err;
184
185 if (dir == MLXSW_SP_RIF_COUNTER_EGRESS)
186 is_egress = true;
187 mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index);
188 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
189 if (err)
190 return err;
191
192 mlxsw_reg_ritr_counter_pack(ritr_pl, counter_index, enable,
193 is_egress);
194 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
195}
196
197int 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)
200{
201 char ricnt_pl[MLXSW_REG_RICNT_LEN];
202 unsigned int *p_counter_index;
203 bool valid;
204 int err;
205
206 valid = mlxsw_sp_rif_counter_valid_get(rif, dir);
207 if (!valid)
208 return -EINVAL;
209
210 p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir);
211 if (!p_counter_index)
212 return -EINVAL;
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);
216 if (err)
217 return err;
218 *cnt = mlxsw_reg_ricnt_good_unicast_packets_get(ricnt_pl);
219 return 0;
220}
221
222static int mlxsw_sp_rif_counter_clear(struct mlxsw_sp *mlxsw_sp,
223 unsigned int counter_index)
224{
225 char ricnt_pl[MLXSW_REG_RICNT_LEN];
226
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);
230}
231
232int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp *mlxsw_sp,
233 struct mlxsw_sp_rif *rif,
234 enum mlxsw_sp_rif_counter_dir dir)
235{
236 unsigned int *p_counter_index;
237 int err;
238
239 p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir);
240 if (!p_counter_index)
241 return -EINVAL;
242 err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF,
243 p_counter_index);
244 if (err)
245 return err;
246
247 err = mlxsw_sp_rif_counter_clear(mlxsw_sp, *p_counter_index);
248 if (err)
249 goto err_counter_clear;
250
251 err = mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index,
252 *p_counter_index, true, dir);
253 if (err)
254 goto err_counter_edit;
255 mlxsw_sp_rif_counter_valid_set(rif, dir, true);
256 return 0;
257
258err_counter_edit:
259err_counter_clear:
260 mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF,
261 *p_counter_index);
262 return err;
263}
264
265void mlxsw_sp_rif_counter_free(struct mlxsw_sp *mlxsw_sp,
266 struct mlxsw_sp_rif *rif,
267 enum mlxsw_sp_rif_counter_dir dir)
268{
269 unsigned int *p_counter_index;
270
6b1206bb
AS		 271 if (!mlxsw_sp_rif_counter_valid_get(rif, dir))
272 return;
273
e0c0afd8
AS		 274 p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir);
275 if (WARN_ON(!p_counter_index))
276 return;
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,
280 *p_counter_index);
281 mlxsw_sp_rif_counter_valid_set(rif, dir, false);
282}
283
e4f3c1c1
IS		 284static void mlxsw_sp_rif_counters_alloc(struct mlxsw_sp_rif *rif)
285{
286 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
287 struct devlink *devlink;
288
289 devlink = priv_to_devlink(mlxsw_sp->core);
290 if (!devlink_dpipe_table_counter_enabled(devlink,
291 MLXSW_SP_DPIPE_TABLE_NAME_ERIF))
292 return;
293 mlxsw_sp_rif_counter_alloc(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_EGRESS);
294}
295
296static void mlxsw_sp_rif_counters_free(struct mlxsw_sp_rif *rif)
297{
298 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
299
300 mlxsw_sp_rif_counter_free(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_EGRESS);
301}
302
4724ba56
IS		 303static struct mlxsw_sp_rif *
304mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp,
305 const struct net_device *dev);
306
9011b677
IS		 307#define MLXSW_SP_PREFIX_COUNT (sizeof(struct in6_addr) * BITS_PER_BYTE)
308
309struct mlxsw_sp_prefix_usage {
310 DECLARE_BITMAP(b, MLXSW_SP_PREFIX_COUNT);
311};
312
53342023
JP		 313#define mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) \
314 for_each_set_bit(prefix, (prefix_usage)->b, MLXSW_SP_PREFIX_COUNT)
315
6b75c480
JP		 316static bool
317mlxsw_sp_prefix_usage_subset(struct mlxsw_sp_prefix_usage *prefix_usage1,
318 struct mlxsw_sp_prefix_usage *prefix_usage2)
319{
320 unsigned char prefix;
321
322 mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage1) {
323 if (!test_bit(prefix, prefix_usage2->b))
324 return false;
325 }
326 return true;
327}
328
53342023
JP		 329static bool
330mlxsw_sp_prefix_usage_eq(struct mlxsw_sp_prefix_usage *prefix_usage1,
331 struct mlxsw_sp_prefix_usage *prefix_usage2)
332{
333 return !memcmp(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1));
334}
335
6b75c480
JP		 336static bool
337mlxsw_sp_prefix_usage_none(struct mlxsw_sp_prefix_usage *prefix_usage)
338{
339 struct mlxsw_sp_prefix_usage prefix_usage_none = {{ 0 } };
340
341 return mlxsw_sp_prefix_usage_eq(prefix_usage, &prefix_usage_none);
342}
343
344static void
345mlxsw_sp_prefix_usage_cpy(struct mlxsw_sp_prefix_usage *prefix_usage1,
346 struct mlxsw_sp_prefix_usage *prefix_usage2)
347{
348 memcpy(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1));
349}
350
5e9c16cc
JP		 351static void
352mlxsw_sp_prefix_usage_set(struct mlxsw_sp_prefix_usage *prefix_usage,
353 unsigned char prefix_len)
354{
355 set_bit(prefix_len, prefix_usage->b);
356}
357
358static void
359mlxsw_sp_prefix_usage_clear(struct mlxsw_sp_prefix_usage *prefix_usage,
360 unsigned char prefix_len)
361{
362 clear_bit(prefix_len, prefix_usage->b);
363}
364
365struct mlxsw_sp_fib_key {
366 unsigned char addr[sizeof(struct in6_addr)];
367 unsigned char prefix_len;
368};
369
61c503f9
JP		 370enum 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,
374};
375
a7ff87ac 376struct mlxsw_sp_nexthop_group;
9011b677 377struct mlxsw_sp_fib;
a7ff87ac 378
9aecce1c
IS		 379struct mlxsw_sp_fib_node {
380 struct list_head entry_list;
b45f64d1 381 struct list_head list;
9aecce1c 382 struct rhash_head ht_node;
76610ebb 383 struct mlxsw_sp_fib *fib;
5e9c16cc 384 struct mlxsw_sp_fib_key key;
9aecce1c
IS		 385};
386
387struct mlxsw_sp_fib_entry_params {
388 u32 tb_id;
389 u32 prio;
390 u8 tos;
391 u8 type;
392};
393
394struct mlxsw_sp_fib_entry {
395 struct list_head list;
396 struct mlxsw_sp_fib_node *fib_node;
61c503f9 397 enum mlxsw_sp_fib_entry_type type;
a7ff87ac
JP		 398 struct list_head nexthop_group_node;
399 struct mlxsw_sp_nexthop_group *nh_group;
9aecce1c 400 struct mlxsw_sp_fib_entry_params params;
013b20f9 401 bool offloaded;
5e9c16cc
JP		 402};
403
9011b677
IS		 404enum mlxsw_sp_l3proto {
405 MLXSW_SP_L3_PROTO_IPV4,
406 MLXSW_SP_L3_PROTO_IPV6,
407};
408
409struct mlxsw_sp_lpm_tree {
410 u8 id; /* tree ID */
411 unsigned int ref_count;
412 enum mlxsw_sp_l3proto proto;
413 struct mlxsw_sp_prefix_usage prefix_usage;
414};
415
5e9c16cc
JP		 416struct mlxsw_sp_fib {
417 struct rhashtable ht;
9aecce1c 418 struct list_head node_list;
76610ebb
IS		 419 struct mlxsw_sp_vr *vr;
420 struct mlxsw_sp_lpm_tree *lpm_tree;
5e9c16cc
JP		 421 unsigned long prefix_ref_count[MLXSW_SP_PREFIX_COUNT];
422 struct mlxsw_sp_prefix_usage prefix_usage;
76610ebb 423 enum mlxsw_sp_l3proto proto;
5e9c16cc
JP		 424};
425
9011b677
IS		 426struct mlxsw_sp_vr {
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;
431};
432
9aecce1c 433static const struct rhashtable_params mlxsw_sp_fib_ht_params;
5e9c16cc 434
76610ebb
IS		 435static struct mlxsw_sp_fib *mlxsw_sp_fib_create(struct mlxsw_sp_vr *vr,
436 enum mlxsw_sp_l3proto proto)
5e9c16cc
JP		 437{
438 struct mlxsw_sp_fib *fib;
439 int err;
440
441 fib = kzalloc(sizeof(*fib), GFP_KERNEL);
442 if (!fib)
443 return ERR_PTR(-ENOMEM);
444 err = rhashtable_init(&fib->ht, &mlxsw_sp_fib_ht_params);
445 if (err)
446 goto err_rhashtable_init;
9aecce1c 447 INIT_LIST_HEAD(&fib->node_list);
76610ebb
IS		 448 fib->proto = proto;
449 fib->vr = vr;
5e9c16cc
JP		 450 return fib;
451
452err_rhashtable_init:
453 kfree(fib);
454 return ERR_PTR(err);
455}
456
457static void mlxsw_sp_fib_destroy(struct mlxsw_sp_fib *fib)
458{
9aecce1c 459 WARN_ON(!list_empty(&fib->node_list));
76610ebb 460 WARN_ON(fib->lpm_tree);
5e9c16cc
JP		 461 rhashtable_destroy(&fib->ht);
462 kfree(fib);
463}
464
53342023 465static struct mlxsw_sp_lpm_tree *
382dbb40 466mlxsw_sp_lpm_tree_find_unused(struct mlxsw_sp *mlxsw_sp)
53342023
JP		 467{
468 static struct mlxsw_sp_lpm_tree *lpm_tree;
469 int i;
470
9011b677
IS		 471 for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) {
472 lpm_tree = &mlxsw_sp->router->lpm.trees[i];
382dbb40
IS		 473 if (lpm_tree->ref_count == 0)
474 return lpm_tree;
53342023
JP		 475 }
476 return NULL;
477}
478
479static int mlxsw_sp_lpm_tree_alloc(struct mlxsw_sp *mlxsw_sp,
480 struct mlxsw_sp_lpm_tree *lpm_tree)
481{
482 char ralta_pl[MLXSW_REG_RALTA_LEN];
483
1a9234e6
IS		 484 mlxsw_reg_ralta_pack(ralta_pl, true,
485 (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto,
486 lpm_tree->id);
53342023
JP		 487 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl);
488}
489
490static int mlxsw_sp_lpm_tree_free(struct mlxsw_sp *mlxsw_sp,
491 struct mlxsw_sp_lpm_tree *lpm_tree)
492{
493 char ralta_pl[MLXSW_REG_RALTA_LEN];
494
1a9234e6
IS		 495 mlxsw_reg_ralta_pack(ralta_pl, false,
496 (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto,
497 lpm_tree->id);
53342023
JP		 498 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl);
499}
500
501static int
502mlxsw_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)
505{
506 char ralst_pl[MLXSW_REG_RALST_LEN];
507 u8 root_bin = 0;
508 u8 prefix;
509 u8 last_prefix = MLXSW_REG_RALST_BIN_NO_CHILD;
510
511 mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage)
512 root_bin = prefix;
513
514 mlxsw_reg_ralst_pack(ralst_pl, root_bin, lpm_tree->id);
515 mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) {
516 if (prefix == 0)
517 continue;
518 mlxsw_reg_ralst_bin_pack(ralst_pl, prefix, last_prefix,
519 MLXSW_REG_RALST_BIN_NO_CHILD);
520 last_prefix = prefix;
521 }
522 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl);
523}
524
525static struct mlxsw_sp_lpm_tree *
526mlxsw_sp_lpm_tree_create(struct mlxsw_sp *mlxsw_sp,
527 struct mlxsw_sp_prefix_usage *prefix_usage,
382dbb40 528 enum mlxsw_sp_l3proto proto)
53342023
JP		 529{
530 struct mlxsw_sp_lpm_tree *lpm_tree;
531 int err;
532
382dbb40 533 lpm_tree = mlxsw_sp_lpm_tree_find_unused(mlxsw_sp);
53342023
JP		 534 if (!lpm_tree)
535 return ERR_PTR(-EBUSY);
536 lpm_tree->proto = proto;
537 err = mlxsw_sp_lpm_tree_alloc(mlxsw_sp, lpm_tree);
538 if (err)
539 return ERR_PTR(err);
540
541 err = mlxsw_sp_lpm_tree_left_struct_set(mlxsw_sp, prefix_usage,
542 lpm_tree);
543 if (err)
544 goto err_left_struct_set;
2083d367
JP		 545 memcpy(&lpm_tree->prefix_usage, prefix_usage,
546 sizeof(lpm_tree->prefix_usage));
53342023
JP		 547 return lpm_tree;
548
549err_left_struct_set:
550 mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree);
551 return ERR_PTR(err);
552}
553
554static int mlxsw_sp_lpm_tree_destroy(struct mlxsw_sp *mlxsw_sp,
555 struct mlxsw_sp_lpm_tree *lpm_tree)
556{
557 return mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree);
558}
559
560static struct mlxsw_sp_lpm_tree *
561mlxsw_sp_lpm_tree_get(struct mlxsw_sp *mlxsw_sp,
562 struct mlxsw_sp_prefix_usage *prefix_usage,
382dbb40 563 enum mlxsw_sp_l3proto proto)
53342023
JP		 564{
565 struct mlxsw_sp_lpm_tree *lpm_tree;
566 int i;
567
9011b677
IS		 568 for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) {
569 lpm_tree = &mlxsw_sp->router->lpm.trees[i];
8b99becd
JP		 570 if (lpm_tree->ref_count != 0 &&
571 lpm_tree->proto == proto &&
53342023
JP		 572 mlxsw_sp_prefix_usage_eq(&lpm_tree->prefix_usage,
573 prefix_usage))
574 goto inc_ref_count;
575 }
576 lpm_tree = mlxsw_sp_lpm_tree_create(mlxsw_sp, prefix_usage,
382dbb40 577 proto);
53342023
JP		 578 if (IS_ERR(lpm_tree))
579 return lpm_tree;
580
581inc_ref_count:
582 lpm_tree->ref_count++;
583 return lpm_tree;
584}
585
586static int mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp,
587 struct mlxsw_sp_lpm_tree *lpm_tree)
588{
589 if (--lpm_tree->ref_count == 0)
590 return mlxsw_sp_lpm_tree_destroy(mlxsw_sp, lpm_tree);
591 return 0;
592}
593
d7a60306 594#define MLXSW_SP_LPM_TREE_MIN 1 /* tree 0 is reserved */
8494ab06
IS		 595
596static int mlxsw_sp_lpm_init(struct mlxsw_sp *mlxsw_sp)
53342023
JP		 597{
598 struct mlxsw_sp_lpm_tree *lpm_tree;
8494ab06 599 u64 max_trees;
53342023
JP		 600 int i;
601
8494ab06
IS		 602 if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LPM_TREES))
603 return -EIO;
604
605 max_trees = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LPM_TREES);
9011b677
IS		 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,
8494ab06
IS		 608 sizeof(struct mlxsw_sp_lpm_tree),
609 GFP_KERNEL);
9011b677 610 if (!mlxsw_sp->router->lpm.trees)
8494ab06
IS		 611 return -ENOMEM;
612
9011b677
IS		 613 for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) {
614 lpm_tree = &mlxsw_sp->router->lpm.trees[i];
53342023
JP		 615 lpm_tree->id = i + MLXSW_SP_LPM_TREE_MIN;
616 }
8494ab06
IS		 617
618 return 0;
619}
620
621static void mlxsw_sp_lpm_fini(struct mlxsw_sp *mlxsw_sp)
622{
9011b677 623 kfree(mlxsw_sp->router->lpm.trees);
53342023
JP		 624}
625
76610ebb
IS		 626static bool mlxsw_sp_vr_is_used(const struct mlxsw_sp_vr *vr)
627{
628 return !!vr->fib4;
629}
630
6b75c480
JP		 631static struct mlxsw_sp_vr *mlxsw_sp_vr_find_unused(struct mlxsw_sp *mlxsw_sp)
632{
633 struct mlxsw_sp_vr *vr;
634 int i;
635
c1a38311 636 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
9011b677 637 vr = &mlxsw_sp->router->vrs[i];
76610ebb 638 if (!mlxsw_sp_vr_is_used(vr))
6b75c480
JP		 639 return vr;
640 }
641 return NULL;
642}
643
644static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp,
76610ebb 645 const struct mlxsw_sp_fib *fib)
6b75c480
JP		 646{
647 char raltb_pl[MLXSW_REG_RALTB_LEN];
648
76610ebb
IS		 649 mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id,
650 (enum mlxsw_reg_ralxx_protocol) fib->proto,
651 fib->lpm_tree->id);
6b75c480
JP		 652 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl);
653}
654
655static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp,
76610ebb 656 const struct mlxsw_sp_fib *fib)
6b75c480
JP		 657{
658 char raltb_pl[MLXSW_REG_RALTB_LEN];
659
660 /* Bind to tree 0 which is default */
76610ebb
IS		 661 mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id,
662 (enum mlxsw_reg_ralxx_protocol) fib->proto, 0);
6b75c480
JP		 663 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl);
664}
665
666static u32 mlxsw_sp_fix_tb_id(u32 tb_id)
667{
668 /* For our purpose, squash main and local table into one */
669 if (tb_id == RT_TABLE_LOCAL)
670 tb_id = RT_TABLE_MAIN;
671 return tb_id;
672}
673
674static struct mlxsw_sp_vr *mlxsw_sp_vr_find(struct mlxsw_sp *mlxsw_sp,
76610ebb 675 u32 tb_id)
6b75c480
JP		 676{
677 struct mlxsw_sp_vr *vr;
678 int i;
679
680 tb_id = mlxsw_sp_fix_tb_id(tb_id);
9497c042 681
c1a38311 682 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
9011b677 683 vr = &mlxsw_sp->router->vrs[i];
76610ebb 684 if (mlxsw_sp_vr_is_used(vr) && vr->tb_id == tb_id)
6b75c480
JP		 685 return vr;
686 }
687 return NULL;
688}
689
76610ebb
IS		 690static struct mlxsw_sp_fib *mlxsw_sp_vr_fib(const struct mlxsw_sp_vr *vr,
691 enum mlxsw_sp_l3proto proto)
692{
693 switch (proto) {
694 case MLXSW_SP_L3_PROTO_IPV4:
695 return vr->fib4;
696 case MLXSW_SP_L3_PROTO_IPV6:
697 BUG_ON(1);
698 }
699 return NULL;
700}
701
6b75c480 702static struct mlxsw_sp_vr *mlxsw_sp_vr_create(struct mlxsw_sp *mlxsw_sp,
76610ebb 703 u32 tb_id)
6b75c480 704{
6b75c480 705 struct mlxsw_sp_vr *vr;
6b75c480
JP		 706
707 vr = mlxsw_sp_vr_find_unused(mlxsw_sp);
708 if (!vr)
709 return ERR_PTR(-EBUSY);
76610ebb
IS		 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);
6b75c480 713 vr->tb_id = tb_id;
6b75c480 714 return vr;
6b75c480
JP		 715}
716
76610ebb 717static void mlxsw_sp_vr_destroy(struct mlxsw_sp_vr *vr)
6b75c480 718{
76610ebb
IS		 719 mlxsw_sp_fib_destroy(vr->fib4);
720 vr->fib4 = NULL;
6b75c480
JP		 721}
722
723static int
76610ebb 724mlxsw_sp_vr_lpm_tree_check(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fib *fib,
6b75c480
JP		 725 struct mlxsw_sp_prefix_usage *req_prefix_usage)
726{
76610ebb 727 struct mlxsw_sp_lpm_tree *lpm_tree = fib->lpm_tree;
f7df4923
IS		 728 struct mlxsw_sp_lpm_tree *new_tree;
729 int err;
6b75c480 730
f7df4923 731 if (mlxsw_sp_prefix_usage_eq(req_prefix_usage, &lpm_tree->prefix_usage))
6b75c480
JP		 732 return 0;
733
f7df4923 734 new_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, req_prefix_usage,
76610ebb 735 fib->proto);
f7df4923 736 if (IS_ERR(new_tree)) {
6b75c480
JP		 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
740 * in the tree.
741 */
742 if (mlxsw_sp_prefix_usage_subset(req_prefix_usage,
f7df4923 743 &lpm_tree->prefix_usage))
6b75c480 744 return 0;
f7df4923 745 return PTR_ERR(new_tree);
6b75c480
JP		 746 }
747
f7df4923 748 /* Prevent packet loss by overwriting existing binding */
76610ebb
IS		 749 fib->lpm_tree = new_tree;
750 err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib);
f7df4923
IS		 751 if (err)
752 goto err_tree_bind;
753 mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree);
754
755 return 0;
756
757err_tree_bind:
76610ebb 758 fib->lpm_tree = lpm_tree;
f7df4923
IS		 759 mlxsw_sp_lpm_tree_put(mlxsw_sp, new_tree);
760 return err;
6b75c480
JP		 761}
762
76610ebb 763static struct mlxsw_sp_vr *mlxsw_sp_vr_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id)
6b75c480
JP		 764{
765 struct mlxsw_sp_vr *vr;
6b75c480
JP		 766
767 tb_id = mlxsw_sp_fix_tb_id(tb_id);
76610ebb
IS		 768 vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id);
769 if (!vr)
770 vr = mlxsw_sp_vr_create(mlxsw_sp, tb_id);
6b75c480
JP		 771 return vr;
772}
773
76610ebb 774static void mlxsw_sp_vr_put(struct mlxsw_sp_vr *vr)
6b75c480 775{
6913229e 776 if (!vr->rif_count && list_empty(&vr->fib4->node_list))
76610ebb 777 mlxsw_sp_vr_destroy(vr);
6b75c480
JP		 778}
779
9497c042 780static int mlxsw_sp_vrs_init(struct mlxsw_sp *mlxsw_sp)
6b75c480
JP		 781{
782 struct mlxsw_sp_vr *vr;
c1a38311 783 u64 max_vrs;
6b75c480
JP		 784 int i;
785
c1a38311 786 if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_VRS))
9497c042
NF		 787 return -EIO;
788
c1a38311 789 max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS);
9011b677
IS		 790 mlxsw_sp->router->vrs = kcalloc(max_vrs, sizeof(struct mlxsw_sp_vr),
791 GFP_KERNEL);
792 if (!mlxsw_sp->router->vrs)
9497c042
NF		 793 return -ENOMEM;
794
c1a38311 795 for (i = 0; i < max_vrs; i++) {
9011b677 796 vr = &mlxsw_sp->router->vrs[i];
6b75c480
JP		 797 vr->id = i;
798 }
9497c042
NF		 799
800 return 0;
801}
802
ac571de9
IS		 803static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp);
804
9497c042
NF		 805static void mlxsw_sp_vrs_fini(struct mlxsw_sp *mlxsw_sp)
806{
3057224e
IS		 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
812 * writer.
813 */
814 mlxsw_core_flush_owq();
ac571de9 815 mlxsw_sp_router_fib_flush(mlxsw_sp);
9011b677 816 kfree(mlxsw_sp->router->vrs);
6b75c480
JP		 817}
818
6cf3c971 819struct mlxsw_sp_neigh_key {
33b1341c 820 struct neighbour *n;
6cf3c971
JP		 821};
822
823struct mlxsw_sp_neigh_entry {
9665b745 824 struct list_head rif_list_node;
6cf3c971
JP		 825 struct rhash_head ht_node;
826 struct mlxsw_sp_neigh_key key;
827 u16 rif;
5c8802f1 828 bool connected;
a6bf9e93 829 unsigned char ha[ETH_ALEN];
a7ff87ac
JP		 830 struct list_head nexthop_list; /* list of nexthops using
831 * this neigh entry
832 */
b2157149 833 struct list_head nexthop_neighs_list_node;
6cf3c971
JP		 834};
835
836static 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),
840};
841
6cf3c971 842static struct mlxsw_sp_neigh_entry *
5c8802f1
IS		 843mlxsw_sp_neigh_entry_alloc(struct mlxsw_sp *mlxsw_sp, struct neighbour *n,
844 u16 rif)
6cf3c971
JP		 845{
846 struct mlxsw_sp_neigh_entry *neigh_entry;
847
5c8802f1 848 neigh_entry = kzalloc(sizeof(*neigh_entry), GFP_KERNEL);
6cf3c971
JP		 849 if (!neigh_entry)
850 return NULL;
5c8802f1 851
33b1341c 852 neigh_entry->key.n = n;
6cf3c971 853 neigh_entry->rif = rif;
a7ff87ac 854 INIT_LIST_HEAD(&neigh_entry->nexthop_list);
5c8802f1 855
6cf3c971
JP		 856 return neigh_entry;
857}
858
5c8802f1 859static void mlxsw_sp_neigh_entry_free(struct mlxsw_sp_neigh_entry *neigh_entry)
6cf3c971
JP		 860{
861 kfree(neigh_entry);
862}
863
5c8802f1
IS		 864static int
865mlxsw_sp_neigh_entry_insert(struct mlxsw_sp *mlxsw_sp,
866 struct mlxsw_sp_neigh_entry *neigh_entry)
6cf3c971 867{
9011b677 868 return rhashtable_insert_fast(&mlxsw_sp->router->neigh_ht,
5c8802f1
IS		 869 &neigh_entry->ht_node,
870 mlxsw_sp_neigh_ht_params);
871}
6cf3c971 872
5c8802f1
IS		 873static void
874mlxsw_sp_neigh_entry_remove(struct mlxsw_sp *mlxsw_sp,
875 struct mlxsw_sp_neigh_entry *neigh_entry)
876{
9011b677 877 rhashtable_remove_fast(&mlxsw_sp->router->neigh_ht,
5c8802f1
IS		 878 &neigh_entry->ht_node,
879 mlxsw_sp_neigh_ht_params);
6cf3c971
JP		 880}
881
5c8802f1
IS		 882static struct mlxsw_sp_neigh_entry *
883mlxsw_sp_neigh_entry_create(struct mlxsw_sp *mlxsw_sp, struct neighbour *n)
6cf3c971 884{
6cf3c971 885 struct mlxsw_sp_neigh_entry *neigh_entry;
bf95233e 886 struct mlxsw_sp_rif *rif;
6cf3c971
JP		 887 int err;
888
bf95233e
AS		 889 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, n->dev);
890 if (!rif)
5c8802f1 891 return ERR_PTR(-EINVAL);
6cf3c971 892
bf95233e 893 neigh_entry = mlxsw_sp_neigh_entry_alloc(mlxsw_sp, n, rif->rif_index);
6cf3c971 894 if (!neigh_entry)
5c8802f1
IS		 895 return ERR_PTR(-ENOMEM);
896
6cf3c971
JP		 897 err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry);
898 if (err)
899 goto err_neigh_entry_insert;
5c8802f1 900
bf95233e 901 list_add(&neigh_entry->rif_list_node, &rif->neigh_list);
9665b745 902
5c8802f1 903 return neigh_entry;
6cf3c971
JP		 904
905err_neigh_entry_insert:
5c8802f1
IS		 906 mlxsw_sp_neigh_entry_free(neigh_entry);
907 return ERR_PTR(err);
6cf3c971
JP		 908}
909
5c8802f1
IS		 910static void
911mlxsw_sp_neigh_entry_destroy(struct mlxsw_sp *mlxsw_sp,
912 struct mlxsw_sp_neigh_entry *neigh_entry)
6cf3c971 913{
9665b745 914 list_del(&neigh_entry->rif_list_node);
5c8802f1
IS		 915 mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry);
916 mlxsw_sp_neigh_entry_free(neigh_entry);
917}
6cf3c971 918
5c8802f1
IS		 919static struct mlxsw_sp_neigh_entry *
920mlxsw_sp_neigh_entry_lookup(struct mlxsw_sp *mlxsw_sp, struct neighbour *n)
921{
922 struct mlxsw_sp_neigh_key key;
6cf3c971 923
5c8802f1 924 key.n = n;
9011b677 925 return rhashtable_lookup_fast(&mlxsw_sp->router->neigh_ht,
5c8802f1 926 &key, mlxsw_sp_neigh_ht_params);
6cf3c971
JP		 927}
928
c723c735
YG		 929static void
930mlxsw_sp_router_neighs_update_interval_init(struct mlxsw_sp *mlxsw_sp)
931{
932 unsigned long interval = NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME);
933
9011b677 934 mlxsw_sp->router->neighs_update.interval = jiffies_to_msecs(interval);
c723c735
YG		 935}
936
937static void mlxsw_sp_router_neigh_ent_ipv4_process(struct mlxsw_sp *mlxsw_sp,
938 char *rauhtd_pl,
939 int ent_index)
940{
941 struct net_device *dev;
942 struct neighbour *n;
943 __be32 dipn;
944 u32 dip;
945 u16 rif;
946
947 mlxsw_reg_rauhtd_ent_ipv4_unpack(rauhtd_pl, ent_index, &rif, &dip);
948
5f9efffb 949 if (!mlxsw_sp->router->rifs[rif]) {
c723c735
YG		 950 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n");
951 return;
952 }
953
954 dipn = htonl(dip);
5f9efffb 955 dev = mlxsw_sp->router->rifs[rif]->dev;
c723c735
YG		 956 n = neigh_lookup(&arp_tbl, &dipn, dev);
957 if (!n) {
958 netdev_err(dev, "Failed to find matching neighbour for IP=%pI4h\n",
959 &dip);
960 return;
961 }
962
963 netdev_dbg(dev, "Updating neighbour with IP=%pI4h\n", &dip);
964 neigh_event_send(n, NULL);
965 neigh_release(n);
966}
967
968static void mlxsw_sp_router_neigh_rec_ipv4_process(struct mlxsw_sp *mlxsw_sp,
969 char *rauhtd_pl,
970 int rec_index)
971{
972 u8 num_entries;
973 int i;
974
975 num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl,
976 rec_index);
977 /* Hardware starts counting at 0, so add 1. */
978 num_entries++;
979
980 /* Each record consists of several neighbour entries. */
981 for (i = 0; i < num_entries; i++) {
982 int ent_index;
983
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,
986 ent_index);
987 }
988
989}
990
991static void mlxsw_sp_router_neigh_rec_process(struct mlxsw_sp *mlxsw_sp,
992 char *rauhtd_pl, int rec_index)
993{
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,
997 rec_index);
998 break;
999 case MLXSW_REG_RAUHTD_TYPE_IPV6:
1000 WARN_ON_ONCE(1);
1001 break;
1002 }
1003}
1004
42cdb338
AS		 1005static bool mlxsw_sp_router_rauhtd_is_full(char *rauhtd_pl)
1006{
1007 u8 num_rec, last_rec_index, num_entries;
1008
1009 num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl);
1010 last_rec_index = num_rec - 1;
1011
1012 if (num_rec < MLXSW_REG_RAUHTD_REC_MAX_NUM)
1013 return false;
1014 if (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, last_rec_index) ==
1015 MLXSW_REG_RAUHTD_TYPE_IPV6)
1016 return true;
1017
1018 num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl,
1019 last_rec_index);
1020 if (++num_entries == MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC)
1021 return true;
1022 return false;
1023}
1024
b2157149 1025static int mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp)
c723c735 1026{
c723c735
YG		 1027 char *rauhtd_pl;
1028 u8 num_rec;
1029 int i, err;
1030
1031 rauhtd_pl = kmalloc(MLXSW_REG_RAUHTD_LEN, GFP_KERNEL);
1032 if (!rauhtd_pl)
b2157149 1033 return -ENOMEM;
c723c735
YG		 1034
1035 /* Make sure the neighbour's netdev isn't removed in the
1036 * process.
1037 */
1038 rtnl_lock();
1039 do {
1040 mlxsw_reg_rauhtd_pack(rauhtd_pl, MLXSW_REG_RAUHTD_TYPE_IPV4);
1041 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(rauhtd),
1042 rauhtd_pl);
1043 if (err) {
1044 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to dump neighbour talbe\n");
1045 break;
1046 }
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,
1050 i);
42cdb338 1051 } while (mlxsw_sp_router_rauhtd_is_full(rauhtd_pl));
c723c735
YG		 1052 rtnl_unlock();
1053
1054 kfree(rauhtd_pl);
b2157149
YG		 1055 return err;
1056}
1057
1058static void mlxsw_sp_router_neighs_update_nh(struct mlxsw_sp *mlxsw_sp)
1059{
1060 struct mlxsw_sp_neigh_entry *neigh_entry;
1061
1062 /* Take RTNL mutex here to prevent lists from changes */
1063 rtnl_lock();
9011b677 1064 list_for_each_entry(neigh_entry, &mlxsw_sp->router->nexthop_neighs_list,
8a0b7275 1065 nexthop_neighs_list_node)
b2157149
YG		 1066 /* If this neigh have nexthops, make the kernel think this neigh
1067 * is active regardless of the traffic.
1068 */
8a0b7275 1069 neigh_event_send(neigh_entry->key.n, NULL);
b2157149
YG		 1070 rtnl_unlock();
1071}
1072
1073static void
1074mlxsw_sp_router_neighs_update_work_schedule(struct mlxsw_sp *mlxsw_sp)
1075{
9011b677 1076 unsigned long interval = mlxsw_sp->router->neighs_update.interval;
b2157149 1077
9011b677 1078 mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw,
b2157149
YG		 1079 msecs_to_jiffies(interval));
1080}
1081
1082static void mlxsw_sp_router_neighs_update_work(struct work_struct *work)
1083{
9011b677 1084 struct mlxsw_sp_router *router;
b2157149
YG		 1085 int err;
1086
9011b677
IS		 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);
b2157149 1090 if (err)
9011b677 1091 dev_err(router->mlxsw_sp->bus_info->dev, "Could not update kernel for neigh activity");
b2157149 1092
9011b677 1093 mlxsw_sp_router_neighs_update_nh(router->mlxsw_sp);
b2157149 1094
9011b677 1095 mlxsw_sp_router_neighs_update_work_schedule(router->mlxsw_sp);
c723c735
YG		 1096}
1097
0b2361d9
YG		 1098static void mlxsw_sp_router_probe_unresolved_nexthops(struct work_struct *work)
1099{
1100 struct mlxsw_sp_neigh_entry *neigh_entry;
9011b677 1101 struct mlxsw_sp_router *router;
0b2361d9 1102
9011b677
IS		 1103 router = container_of(work, struct mlxsw_sp_router,
1104 nexthop_probe_dw.work);
0b2361d9
YG		 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.
1110 *
1111 * Take RTNL mutex here to prevent lists from changes.
1112 */
1113 rtnl_lock();
9011b677 1114 list_for_each_entry(neigh_entry, &router->nexthop_neighs_list,
8a0b7275 1115 nexthop_neighs_list_node)
01b1aa35 1116 if (!neigh_entry->connected)
33b1341c 1117 neigh_event_send(neigh_entry->key.n, NULL);
0b2361d9
YG		 1118 rtnl_unlock();
1119
9011b677 1120 mlxsw_core_schedule_dw(&router->nexthop_probe_dw,
0b2361d9
YG		 1121 MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL);
1122}
1123
a7ff87ac
JP		 1124static void
1125mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp,
1126 struct mlxsw_sp_neigh_entry *neigh_entry,
1127 bool removing);
1128
5c8802f1
IS		 1129static enum mlxsw_reg_rauht_op mlxsw_sp_rauht_op(bool adding)
1130{
1131 return adding ? MLXSW_REG_RAUHT_OP_WRITE_ADD :
1132 MLXSW_REG_RAUHT_OP_WRITE_DELETE;
1133}
1134
1135static void
1136mlxsw_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)
a6bf9e93 1139{
33b1341c 1140 struct neighbour *n = neigh_entry->key.n;
5c8802f1 1141 u32 dip = ntohl(*((__be32 *) n->primary_key));
a6bf9e93 1142 char rauht_pl[MLXSW_REG_RAUHT_LEN];
5c8802f1
IS		 1143
1144 mlxsw_reg_rauht_pack4(rauht_pl, op, neigh_entry->rif, neigh_entry->ha,
1145 dip);
1146 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl);
1147}
1148
1149static void
1150mlxsw_sp_neigh_entry_update(struct mlxsw_sp *mlxsw_sp,
1151 struct mlxsw_sp_neigh_entry *neigh_entry,
1152 bool adding)
1153{
1154 if (!adding && !neigh_entry->connected)
1155 return;
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));
1160 else
1161 WARN_ON_ONCE(1);
1162}
1163
1164struct mlxsw_sp_neigh_event_work {
1165 struct work_struct work;
1166 struct mlxsw_sp *mlxsw_sp;
1167 struct neighbour *n;
1168};
1169
1170static void mlxsw_sp_router_neigh_event_work(struct work_struct *work)
1171{
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];
a6bf9e93 1178 bool entry_connected;
93a87e5e 1179 u8 nud_state, dead;
a6bf9e93 1180
5c8802f1
IS		 1181 /* If these parameters are changed after we release the lock,
1182 * then we are guaranteed to receive another event letting us
1183 * know about it.
1184 */
a6bf9e93 1185 read_lock_bh(&n->lock);
5c8802f1 1186 memcpy(ha, n->ha, ETH_ALEN);
a6bf9e93 1187 nud_state = n->nud_state;
93a87e5e 1188 dead = n->dead;
a6bf9e93
YG		 1189 read_unlock_bh(&n->lock);
1190
5c8802f1 1191 rtnl_lock();
93a87e5e 1192 entry_connected = nud_state & NUD_VALID && !dead;
5c8802f1
IS		 1193 neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n);
1194 if (!entry_connected && !neigh_entry)
1195 goto out;
1196 if (!neigh_entry) {
1197 neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n);
1198 if (IS_ERR(neigh_entry))
1199 goto out;
a6bf9e93
YG		 1200 }
1201
5c8802f1
IS		 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);
1205
1206 if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list))
1207 mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry);
1208
1209out:
1210 rtnl_unlock();
a6bf9e93 1211 neigh_release(n);
5c8802f1 1212 kfree(neigh_work);
a6bf9e93
YG		 1213}
1214
e7322638
JP		 1215int mlxsw_sp_router_netevent_event(struct notifier_block *unused,
1216 unsigned long event, void *ptr)
c723c735 1217{
5c8802f1 1218 struct mlxsw_sp_neigh_event_work *neigh_work;
c723c735
YG		 1219 struct mlxsw_sp_port *mlxsw_sp_port;
1220 struct mlxsw_sp *mlxsw_sp;
1221 unsigned long interval;
1222 struct neigh_parms *p;
a6bf9e93 1223 struct neighbour *n;
c723c735
YG		 1224
1225 switch (event) {
1226 case NETEVENT_DELAY_PROBE_TIME_UPDATE:
1227 p = ptr;
1228
1229 /* We don't care about changes in the default table. */
1230 if (!p->dev || p->tbl != &arp_tbl)
1231 return NOTIFY_DONE;
1232
1233 /* We are in atomic context and can't take RTNL mutex,
1234 * so use RCU variant to walk the device chain.
1235 */
1236 mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(p->dev);
1237 if (!mlxsw_sp_port)
1238 return NOTIFY_DONE;
1239
1240 mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1241 interval = jiffies_to_msecs(NEIGH_VAR(p, DELAY_PROBE_TIME));
9011b677 1242 mlxsw_sp->router->neighs_update.interval = interval;
c723c735
YG		 1243
1244 mlxsw_sp_port_dev_put(mlxsw_sp_port);
1245 break;
a6bf9e93
YG		 1246 case NETEVENT_NEIGH_UPDATE:
1247 n = ptr;
a6bf9e93
YG		 1248
1249 if (n->tbl != &arp_tbl)
1250 return NOTIFY_DONE;
1251
5c8802f1 1252 mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(n->dev);
a6bf9e93
YG		 1253 if (!mlxsw_sp_port)
1254 return NOTIFY_DONE;
1255
5c8802f1
IS		 1256 neigh_work = kzalloc(sizeof(*neigh_work), GFP_ATOMIC);
1257 if (!neigh_work) {
a6bf9e93 1258 mlxsw_sp_port_dev_put(mlxsw_sp_port);
5c8802f1 1259 return NOTIFY_BAD;
a6bf9e93 1260 }
5c8802f1
IS		 1261
1262 INIT_WORK(&neigh_work->work, mlxsw_sp_router_neigh_event_work);
1263 neigh_work->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1264 neigh_work->n = n;
a6bf9e93
YG		 1265
1266 /* Take a reference to ensure the neighbour won't be
1267 * destructed until we drop the reference in delayed
1268 * work.
1269 */
1270 neigh_clone(n);
5c8802f1
IS		 1271 mlxsw_core_schedule_work(&neigh_work->work);
1272 mlxsw_sp_port_dev_put(mlxsw_sp_port);
a6bf9e93 1273 break;
c723c735
YG		 1274 }
1275
1276 return NOTIFY_DONE;
1277}
1278
6cf3c971
JP		 1279static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp)
1280{
c723c735
YG		 1281 int err;
1282
9011b677 1283 err = rhashtable_init(&mlxsw_sp->router->neigh_ht,
c723c735
YG		 1284 &mlxsw_sp_neigh_ht_params);
1285 if (err)
1286 return err;
1287
1288 /* Initialize the polling interval according to the default
1289 * table.
1290 */
1291 mlxsw_sp_router_neighs_update_interval_init(mlxsw_sp);
1292
0b2361d9 1293 /* Create the delayed works for the activity_update */
9011b677 1294 INIT_DELAYED_WORK(&mlxsw_sp->router->neighs_update.dw,
c723c735 1295 mlxsw_sp_router_neighs_update_work);
9011b677 1296 INIT_DELAYED_WORK(&mlxsw_sp->router->nexthop_probe_dw,
0b2361d9 1297 mlxsw_sp_router_probe_unresolved_nexthops);
9011b677
IS		 1298 mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, 0);
1299 mlxsw_core_schedule_dw(&mlxsw_sp->router->nexthop_probe_dw, 0);
c723c735 1300 return 0;
6cf3c971
JP		 1301}
1302
1303static void mlxsw_sp_neigh_fini(struct mlxsw_sp *mlxsw_sp)
1304{
9011b677
IS		 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);
6cf3c971
JP		 1308}
1309
9665b745 1310static int mlxsw_sp_neigh_rif_flush(struct mlxsw_sp *mlxsw_sp,
bf95233e 1311 const struct mlxsw_sp_rif *rif)
9665b745
IS		 1312{
1313 char rauht_pl[MLXSW_REG_RAUHT_LEN];
1314
1315 mlxsw_reg_rauht_pack(rauht_pl, MLXSW_REG_RAUHT_OP_WRITE_DELETE_ALL,
bf95233e 1316 rif->rif_index, rif->addr);
9665b745
IS		 1317 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl);
1318}
1319
1320static void mlxsw_sp_neigh_rif_gone_sync(struct mlxsw_sp *mlxsw_sp,
bf95233e 1321 struct mlxsw_sp_rif *rif)
9665b745
IS		 1322{
1323 struct mlxsw_sp_neigh_entry *neigh_entry, *tmp;
1324
bf95233e
AS		 1325 mlxsw_sp_neigh_rif_flush(mlxsw_sp, rif);
1326 list_for_each_entry_safe(neigh_entry, tmp, &rif->neigh_list,
9665b745
IS		 1327 rif_list_node)
1328 mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry);
1329}
1330
c53b8e1b
IS		 1331struct mlxsw_sp_nexthop_key {
1332 struct fib_nh *fib_nh;
1333};
1334
a7ff87ac
JP		 1335struct mlxsw_sp_nexthop {
1336 struct list_head neigh_list_node; /* member of neigh entry list */
9665b745 1337 struct list_head rif_list_node;
a7ff87ac
JP		 1338 struct mlxsw_sp_nexthop_group *nh_grp; /* pointer back to the group
1339 * this belongs to
1340 */
c53b8e1b
IS		 1341 struct rhash_head ht_node;
1342 struct mlxsw_sp_nexthop_key key;
bf95233e 1343 struct mlxsw_sp_rif *rif;
a7ff87ac
JP		 1344 u8 should_offload:1, /* set indicates this neigh is connected and
1345 * should be put to KVD linear area of this group.
1346 */
1347 offloaded:1, /* set in case the neigh is actually put into
1348 * KVD linear area of this group.
1349 */
1350 update:1; /* set indicates that MAC of this neigh should be
1351 * updated in HW
1352 */
1353 struct mlxsw_sp_neigh_entry *neigh_entry;
1354};
1355
e9ad5e7d
IS		 1356struct mlxsw_sp_nexthop_group_key {
1357 struct fib_info *fi;
1358};
1359
a7ff87ac 1360struct mlxsw_sp_nexthop_group {
e9ad5e7d 1361 struct rhash_head ht_node;
a7ff87ac 1362 struct list_head fib_list; /* list of fib entries that use this group */
e9ad5e7d 1363 struct mlxsw_sp_nexthop_group_key key;
b3e8d1eb
IS		 1364 u8 adj_index_valid:1,
1365 gateway:1; /* routes using the group use a gateway */
a7ff87ac
JP		 1366 u32 adj_index;
1367 u16 ecmp_size;
1368 u16 count;
1369 struct mlxsw_sp_nexthop nexthops[0];
bf95233e 1370#define nh_rif nexthops[0].rif
a7ff87ac
JP		 1371};
1372
e9ad5e7d
IS		 1373static 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),
1377};
1378
1379static int mlxsw_sp_nexthop_group_insert(struct mlxsw_sp *mlxsw_sp,
1380 struct mlxsw_sp_nexthop_group *nh_grp)
1381{
9011b677 1382 return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_group_ht,
e9ad5e7d
IS		 1383 &nh_grp->ht_node,
1384 mlxsw_sp_nexthop_group_ht_params);
1385}
1386
1387static void mlxsw_sp_nexthop_group_remove(struct mlxsw_sp *mlxsw_sp,
1388 struct mlxsw_sp_nexthop_group *nh_grp)
1389{
9011b677 1390 rhashtable_remove_fast(&mlxsw_sp->router->nexthop_group_ht,
e9ad5e7d
IS		 1391 &nh_grp->ht_node,
1392 mlxsw_sp_nexthop_group_ht_params);
1393}
1394
1395static struct mlxsw_sp_nexthop_group *
1396mlxsw_sp_nexthop_group_lookup(struct mlxsw_sp *mlxsw_sp,
1397 struct mlxsw_sp_nexthop_group_key key)
1398{
9011b677 1399 return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, &key,
e9ad5e7d
IS		 1400 mlxsw_sp_nexthop_group_ht_params);
1401}
1402
c53b8e1b
IS		 1403static 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),
1407};
1408
1409static int mlxsw_sp_nexthop_insert(struct mlxsw_sp *mlxsw_sp,
1410 struct mlxsw_sp_nexthop *nh)
1411{
9011b677 1412 return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_ht,
c53b8e1b
IS		 1413 &nh->ht_node, mlxsw_sp_nexthop_ht_params);
1414}
1415
1416static void mlxsw_sp_nexthop_remove(struct mlxsw_sp *mlxsw_sp,
1417 struct mlxsw_sp_nexthop *nh)
1418{
9011b677 1419 rhashtable_remove_fast(&mlxsw_sp->router->nexthop_ht, &nh->ht_node,
c53b8e1b
IS		 1420 mlxsw_sp_nexthop_ht_params);
1421}
1422
ad178c8e
IS		 1423static struct mlxsw_sp_nexthop *
1424mlxsw_sp_nexthop_lookup(struct mlxsw_sp *mlxsw_sp,
1425 struct mlxsw_sp_nexthop_key key)
1426{
9011b677 1427 return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_ht, &key,
ad178c8e
IS		 1428 mlxsw_sp_nexthop_ht_params);
1429}
1430
a7ff87ac 1431static int mlxsw_sp_adj_index_mass_update_vr(struct mlxsw_sp *mlxsw_sp,
76610ebb 1432 const struct mlxsw_sp_fib *fib,
a7ff87ac
JP		 1433 u32 adj_index, u16 ecmp_size,
1434 u32 new_adj_index,
1435 u16 new_ecmp_size)
1436{
1437 char raleu_pl[MLXSW_REG_RALEU_LEN];
1438
1a9234e6 1439 mlxsw_reg_raleu_pack(raleu_pl,
76610ebb
IS		 1440 (enum mlxsw_reg_ralxx_protocol) fib->proto,
1441 fib->vr->id, adj_index, ecmp_size, new_adj_index,
1a9234e6 1442 new_ecmp_size);
a7ff87ac
JP		 1443 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raleu), raleu_pl);
1444}
1445
1446static 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)
1449{
1450 struct mlxsw_sp_fib_entry *fib_entry;
76610ebb 1451 struct mlxsw_sp_fib *fib = NULL;
a7ff87ac
JP		 1452 int err;
1453
1454 list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) {
76610ebb 1455 if (fib == fib_entry->fib_node->fib)
a7ff87ac 1456 continue;
76610ebb
IS		 1457 fib = fib_entry->fib_node->fib;
1458 err = mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, fib,
a7ff87ac
JP		 1459 old_adj_index,
1460 old_ecmp_size,
1461 nh_grp->adj_index,
1462 nh_grp->ecmp_size);
1463 if (err)
1464 return err;
1465 }
1466 return 0;
1467}
1468
1469static int mlxsw_sp_nexthop_mac_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
1470 struct mlxsw_sp_nexthop *nh)
1471{
1472 struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry;
1473 char ratr_pl[MLXSW_REG_RATR_LEN];
1474
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);
1479}
1480
1481static int
1482mlxsw_sp_nexthop_group_mac_update(struct mlxsw_sp *mlxsw_sp,
a59b7e02
IS		 1483 struct mlxsw_sp_nexthop_group *nh_grp,
1484 bool reallocate)
a7ff87ac
JP		 1485{
1486 u32 adj_index = nh_grp->adj_index; /* base */
1487 struct mlxsw_sp_nexthop *nh;
1488 int i;
1489 int err;
1490
1491 for (i = 0; i < nh_grp->count; i++) {
1492 nh = &nh_grp->nexthops[i];
1493
1494 if (!nh->should_offload) {
1495 nh->offloaded = 0;
1496 continue;
1497 }
1498
a59b7e02 1499 if (nh->update || reallocate) {
a7ff87ac
JP		 1500 err = mlxsw_sp_nexthop_mac_update(mlxsw_sp,
1501 adj_index, nh);
1502 if (err)
1503 return err;
1504 nh->update = 0;
1505 nh->offloaded = 1;
1506 }
1507 adj_index++;
1508 }
1509 return 0;
1510}
1511
1512static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp,
1513 struct mlxsw_sp_fib_entry *fib_entry);
1514
1515static int
1516mlxsw_sp_nexthop_fib_entries_update(struct mlxsw_sp *mlxsw_sp,
1517 struct mlxsw_sp_nexthop_group *nh_grp)
1518{
1519 struct mlxsw_sp_fib_entry *fib_entry;
1520 int err;
1521
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);
1524 if (err)
1525 return err;
1526 }
1527 return 0;
1528}
1529
1530static void
1531mlxsw_sp_nexthop_group_refresh(struct mlxsw_sp *mlxsw_sp,
1532 struct mlxsw_sp_nexthop_group *nh_grp)
1533{
1534 struct mlxsw_sp_nexthop *nh;
1535 bool offload_change = false;
1536 u32 adj_index;
1537 u16 ecmp_size = 0;
1538 bool old_adj_index_valid;
1539 u32 old_adj_index;
1540 u16 old_ecmp_size;
a7ff87ac
JP		 1541 int i;
1542 int err;
1543
b3e8d1eb
IS		 1544 if (!nh_grp->gateway) {
1545 mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp);
1546 return;
1547 }
1548
a7ff87ac
JP		 1549 for (i = 0; i < nh_grp->count; i++) {
1550 nh = &nh_grp->nexthops[i];
1551
1552 if (nh->should_offload ^ nh->offloaded) {
1553 offload_change = true;
1554 if (nh->should_offload)
1555 nh->update = 1;
1556 }
1557 if (nh->should_offload)
1558 ecmp_size++;
1559 }
1560 if (!offload_change) {
1561 /* Nothing was added or removed, so no need to reallocate. Just
1562 * update MAC on existing adjacency indexes.
1563 */
a59b7e02
IS		 1564 err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp,
1565 false);
a7ff87ac
JP		 1566 if (err) {
1567 dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n");
1568 goto set_trap;
1569 }
1570 return;
1571 }
1572 if (!ecmp_size)
1573 /* No neigh of this group is connected so we just set
1574 * the trap and let everthing flow through kernel.
1575 */
1576 goto set_trap;
1577
13124443
AS		 1578 err = mlxsw_sp_kvdl_alloc(mlxsw_sp, ecmp_size, &adj_index);
1579 if (err) {
a7ff87ac
JP		 1580 /* We ran out of KVD linear space, just set the
1581 * trap and let everything flow through kernel.
1582 */
1583 dev_warn(mlxsw_sp->bus_info->dev, "Failed to allocate KVD linear area for nexthop group.\n");
1584 goto set_trap;
1585 }
a7ff87ac
JP		 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;
a59b7e02 1592 err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, true);
a7ff87ac
JP		 1593 if (err) {
1594 dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n");
1595 goto set_trap;
1596 }
1597
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.
1601 */
1602 err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp);
1603 if (err) {
1604 dev_warn(mlxsw_sp->bus_info->dev, "Failed to add adjacency index to fib entries.\n");
1605 goto set_trap;
1606 }
1607 return;
1608 }
1609
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);
1613 if (err) {
1614 dev_warn(mlxsw_sp->bus_info->dev, "Failed to mass-update adjacency index for nexthop group.\n");
1615 goto set_trap;
1616 }
1617 return;
1618
1619set_trap:
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];
1624 nh->offloaded = 0;
1625 }
1626 err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp);
1627 if (err)
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);
1631}
1632
1633static void __mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp_nexthop *nh,
1634 bool removing)
1635{
1636 if (!removing && !nh->should_offload)
1637 nh->should_offload = 1;
1638 else if (removing && nh->offloaded)
1639 nh->should_offload = 0;
1640 nh->update = 1;
1641}
1642
1643static void
1644mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp,
1645 struct mlxsw_sp_neigh_entry *neigh_entry,
1646 bool removing)
1647{
1648 struct mlxsw_sp_nexthop *nh;
1649
a7ff87ac
JP		 1650 list_for_each_entry(nh, &neigh_entry->nexthop_list,
1651 neigh_list_node) {
1652 __mlxsw_sp_nexthop_neigh_update(nh, removing);
1653 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp);
1654 }
a7ff87ac
JP		 1655}
1656
9665b745 1657static void mlxsw_sp_nexthop_rif_init(struct mlxsw_sp_nexthop *nh,
bf95233e 1658 struct mlxsw_sp_rif *rif)
9665b745 1659{
bf95233e 1660 if (nh->rif)
9665b745
IS		 1661 return;
1662
bf95233e
AS		 1663 nh->rif = rif;
1664 list_add(&nh->rif_list_node, &rif->nexthop_list);
9665b745
IS		 1665}
1666
1667static void mlxsw_sp_nexthop_rif_fini(struct mlxsw_sp_nexthop *nh)
1668{
bf95233e 1669 if (!nh->rif)
9665b745
IS		 1670 return;
1671
1672 list_del(&nh->rif_list_node);
bf95233e 1673 nh->rif = NULL;
9665b745
IS		 1674}
1675
a8c97014
IS		 1676static int mlxsw_sp_nexthop_neigh_init(struct mlxsw_sp *mlxsw_sp,
1677 struct mlxsw_sp_nexthop *nh)
a7ff87ac
JP		 1678{
1679 struct mlxsw_sp_neigh_entry *neigh_entry;
a8c97014 1680 struct fib_nh *fib_nh = nh->key.fib_nh;
a7ff87ac 1681 struct neighbour *n;
93a87e5e 1682 u8 nud_state, dead;
c53b8e1b
IS		 1683 int err;
1684
ad178c8e 1685 if (!nh->nh_grp->gateway || nh->neigh_entry)
b8399a1e
IS		 1686 return 0;
1687
33b1341c
JP		 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
fd76d910 1691 * in neigh_create() in case n is not found.
33b1341c 1692 */
a8c97014 1693 n = neigh_lookup(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev);
33b1341c 1694 if (!n) {
a8c97014
IS		 1695 n = neigh_create(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev);
1696 if (IS_ERR(n))
1697 return PTR_ERR(n);
a7ff87ac 1698 neigh_event_send(n, NULL);
33b1341c
JP		 1699 }
1700 neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n);
1701 if (!neigh_entry) {
5c8802f1
IS		 1702 neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n);
1703 if (IS_ERR(neigh_entry)) {
c53b8e1b
IS		 1704 err = -EINVAL;
1705 goto err_neigh_entry_create;
5c8802f1 1706 }
a7ff87ac 1707 }
b2157149
YG		 1708
1709 /* If that is the first nexthop connected to that neigh, add to
1710 * nexthop_neighs_list
1711 */
1712 if (list_empty(&neigh_entry->nexthop_list))
1713 list_add_tail(&neigh_entry->nexthop_neighs_list_node,
9011b677 1714 &mlxsw_sp->router->nexthop_neighs_list);
b2157149 1715
a7ff87ac
JP		 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;
93a87e5e 1720 dead = n->dead;
a7ff87ac 1721 read_unlock_bh(&n->lock);
93a87e5e 1722 __mlxsw_sp_nexthop_neigh_update(nh, !(nud_state & NUD_VALID && !dead));
a7ff87ac
JP		 1723
1724 return 0;
c53b8e1b
IS		 1725
1726err_neigh_entry_create:
1727 neigh_release(n);
c53b8e1b 1728 return err;
a7ff87ac
JP		 1729}
1730
a8c97014
IS		 1731static void mlxsw_sp_nexthop_neigh_fini(struct mlxsw_sp *mlxsw_sp,
1732 struct mlxsw_sp_nexthop *nh)
a7ff87ac
JP		 1733{
1734 struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry;
a8c97014 1735 struct neighbour *n;
a7ff87ac 1736
b8399a1e 1737 if (!neigh_entry)
a8c97014
IS		 1738 return;
1739 n = neigh_entry->key.n;
b8399a1e 1740
58312125 1741 __mlxsw_sp_nexthop_neigh_update(nh, true);
a7ff87ac 1742 list_del(&nh->neigh_list_node);
e58be79e 1743 nh->neigh_entry = NULL;
b2157149
YG		 1744
1745 /* If that is the last nexthop connected to that neigh, remove from
1746 * nexthop_neighs_list
1747 */
e58be79e
IS		 1748 if (list_empty(&neigh_entry->nexthop_list))
1749 list_del(&neigh_entry->nexthop_neighs_list_node);
b2157149 1750
5c8802f1
IS		 1751 if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list))
1752 mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry);
1753
1754 neigh_release(n);
a8c97014 1755}
c53b8e1b 1756
a8c97014
IS		 1757static 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)
1761{
1762 struct net_device *dev = fib_nh->nh_dev;
df6dd79b 1763 struct in_device *in_dev;
bf95233e 1764 struct mlxsw_sp_rif *rif;
a8c97014
IS		 1765 int err;
1766
1767 nh->nh_grp = nh_grp;
1768 nh->key.fib_nh = fib_nh;
1769 err = mlxsw_sp_nexthop_insert(mlxsw_sp, nh);
1770 if (err)
1771 return err;
1772
97989ee0
IS		 1773 if (!dev)
1774 return 0;
1775
df6dd79b
IS		 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)
1779 return 0;
1780
bf95233e
AS		 1781 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
1782 if (!rif)
a8c97014 1783 return 0;
bf95233e 1784 mlxsw_sp_nexthop_rif_init(nh, rif);
a8c97014
IS		 1785
1786 err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh);
1787 if (err)
1788 goto err_nexthop_neigh_init;
1789
1790 return 0;
1791
1792err_nexthop_neigh_init:
a4e75b76 1793 mlxsw_sp_nexthop_rif_fini(nh);
a8c97014
IS		 1794 mlxsw_sp_nexthop_remove(mlxsw_sp, nh);
1795 return err;
1796}
1797
1798static void mlxsw_sp_nexthop_fini(struct mlxsw_sp *mlxsw_sp,
1799 struct mlxsw_sp_nexthop *nh)
1800{
1801 mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh);
9665b745 1802 mlxsw_sp_nexthop_rif_fini(nh);
c53b8e1b 1803 mlxsw_sp_nexthop_remove(mlxsw_sp, nh);
a7ff87ac
JP		 1804}
1805
ad178c8e
IS		 1806static void mlxsw_sp_nexthop_event(struct mlxsw_sp *mlxsw_sp,
1807 unsigned long event, struct fib_nh *fib_nh)
1808{
1809 struct mlxsw_sp_nexthop_key key;
1810 struct mlxsw_sp_nexthop *nh;
bf95233e 1811 struct mlxsw_sp_rif *rif;
ad178c8e 1812
9011b677 1813 if (mlxsw_sp->router->aborted)
ad178c8e
IS		 1814 return;
1815
1816 key.fib_nh = fib_nh;
1817 nh = mlxsw_sp_nexthop_lookup(mlxsw_sp, key);
1818 if (WARN_ON_ONCE(!nh))
1819 return;
1820
bf95233e
AS		 1821 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, fib_nh->nh_dev);
1822 if (!rif)
ad178c8e
IS		 1823 return;
1824
1825 switch (event) {
1826 case FIB_EVENT_NH_ADD:
bf95233e 1827 mlxsw_sp_nexthop_rif_init(nh, rif);
ad178c8e
IS		 1828 mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh);
1829 break;
1830 case FIB_EVENT_NH_DEL:
1831 mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh);
9665b745 1832 mlxsw_sp_nexthop_rif_fini(nh);
ad178c8e
IS		 1833 break;
1834 }
1835
1836 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp);
1837}
1838
9665b745 1839static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp,
bf95233e 1840 struct mlxsw_sp_rif *rif)
9665b745
IS		 1841{
1842 struct mlxsw_sp_nexthop *nh, *tmp;
1843
bf95233e 1844 list_for_each_entry_safe(nh, tmp, &rif->nexthop_list, rif_list_node) {
9665b745
IS		 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);
1848 }
1849}
1850
a7ff87ac
JP		 1851static struct mlxsw_sp_nexthop_group *
1852mlxsw_sp_nexthop_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi)
1853{
1854 struct mlxsw_sp_nexthop_group *nh_grp;
1855 struct mlxsw_sp_nexthop *nh;
1856 struct fib_nh *fib_nh;
1857 size_t alloc_size;
1858 int i;
1859 int err;
1860
1861 alloc_size = sizeof(*nh_grp) +
1862 fi->fib_nhs * sizeof(struct mlxsw_sp_nexthop);
1863 nh_grp = kzalloc(alloc_size, GFP_KERNEL);
1864 if (!nh_grp)
1865 return ERR_PTR(-ENOMEM);
1866 INIT_LIST_HEAD(&nh_grp->fib_list);
b3e8d1eb 1867 nh_grp->gateway = fi->fib_nh->nh_scope == RT_SCOPE_LINK;
a7ff87ac 1868 nh_grp->count = fi->fib_nhs;
e9ad5e7d 1869 nh_grp->key.fi = fi;
7387dbbc 1870 fib_info_hold(fi);
a7ff87ac
JP		 1871 for (i = 0; i < nh_grp->count; i++) {
1872 nh = &nh_grp->nexthops[i];
1873 fib_nh = &fi->fib_nh[i];
1874 err = mlxsw_sp_nexthop_init(mlxsw_sp, nh_grp, nh, fib_nh);
1875 if (err)
1876 goto err_nexthop_init;
1877 }
e9ad5e7d
IS		 1878 err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp);
1879 if (err)
1880 goto err_nexthop_group_insert;
a7ff87ac
JP		 1881 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp);
1882 return nh_grp;
1883
e9ad5e7d 1884err_nexthop_group_insert:
a7ff87ac 1885err_nexthop_init:
df6dd79b
IS		 1886 for (i--; i >= 0; i--) {
1887 nh = &nh_grp->nexthops[i];
a7ff87ac 1888 mlxsw_sp_nexthop_fini(mlxsw_sp, nh);
df6dd79b 1889 }
7387dbbc 1890 fib_info_put(nh_grp->key.fi);
a7ff87ac
JP		 1891 kfree(nh_grp);
1892 return ERR_PTR(err);
1893}
1894
1895static void
1896mlxsw_sp_nexthop_group_destroy(struct mlxsw_sp *mlxsw_sp,
1897 struct mlxsw_sp_nexthop_group *nh_grp)
1898{
1899 struct mlxsw_sp_nexthop *nh;
1900 int i;
1901
e9ad5e7d 1902 mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp);
a7ff87ac
JP		 1903 for (i = 0; i < nh_grp->count; i++) {
1904 nh = &nh_grp->nexthops[i];
1905 mlxsw_sp_nexthop_fini(mlxsw_sp, nh);
1906 }
58312125
IS		 1907 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp);
1908 WARN_ON_ONCE(nh_grp->adj_index_valid);
7387dbbc 1909 fib_info_put(nh_grp->key.fi);
a7ff87ac
JP		 1910 kfree(nh_grp);
1911}
1912
a7ff87ac
JP		 1913static int mlxsw_sp_nexthop_group_get(struct mlxsw_sp *mlxsw_sp,
1914 struct mlxsw_sp_fib_entry *fib_entry,
1915 struct fib_info *fi)
1916{
e9ad5e7d 1917 struct mlxsw_sp_nexthop_group_key key;
a7ff87ac
JP		 1918 struct mlxsw_sp_nexthop_group *nh_grp;
1919
e9ad5e7d
IS		 1920 key.fi = fi;
1921 nh_grp = mlxsw_sp_nexthop_group_lookup(mlxsw_sp, key);
a7ff87ac
JP		 1922 if (!nh_grp) {
1923 nh_grp = mlxsw_sp_nexthop_group_create(mlxsw_sp, fi);
1924 if (IS_ERR(nh_grp))
1925 return PTR_ERR(nh_grp);
1926 }
1927 list_add_tail(&fib_entry->nexthop_group_node, &nh_grp->fib_list);
1928 fib_entry->nh_group = nh_grp;
1929 return 0;
1930}
1931
1932static void mlxsw_sp_nexthop_group_put(struct mlxsw_sp *mlxsw_sp,
1933 struct mlxsw_sp_fib_entry *fib_entry)
1934{
1935 struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group;
1936
1937 list_del(&fib_entry->nexthop_group_node);
1938 if (!list_empty(&nh_grp->fib_list))
1939 return;
1940 mlxsw_sp_nexthop_group_destroy(mlxsw_sp, nh_grp);
1941}
1942
013b20f9
IS		 1943static bool
1944mlxsw_sp_fib_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry)
1945{
1946 struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group;
1947
9aecce1c
IS		 1948 if (fib_entry->params.tos)
1949 return false;
1950
013b20f9
IS		 1951 switch (fib_entry->type) {
1952 case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE:
1953 return !!nh_group->adj_index_valid;
1954 case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL:
70ad3506 1955 return !!nh_group->nh_rif;
013b20f9
IS		 1956 default:
1957 return false;
1958 }
1959}
1960
1961static void mlxsw_sp_fib_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry)
1962{
1963 fib_entry->offloaded = true;
1964
76610ebb 1965 switch (fib_entry->fib_node->fib->proto) {
013b20f9
IS		 1966 case MLXSW_SP_L3_PROTO_IPV4:
1967 fib_info_offload_inc(fib_entry->nh_group->key.fi);
1968 break;
1969 case MLXSW_SP_L3_PROTO_IPV6:
1970 WARN_ON_ONCE(1);
1971 }
1972}
1973
1974static void
1975mlxsw_sp_fib_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry)
1976{
76610ebb 1977 switch (fib_entry->fib_node->fib->proto) {
013b20f9
IS		 1978 case MLXSW_SP_L3_PROTO_IPV4:
1979 fib_info_offload_dec(fib_entry->nh_group->key.fi);
1980 break;
1981 case MLXSW_SP_L3_PROTO_IPV6:
1982 WARN_ON_ONCE(1);
1983 }
1984
1985 fib_entry->offloaded = false;
1986}
1987
1988static void
1989mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry,
1990 enum mlxsw_reg_ralue_op op, int err)
1991{
1992 switch (op) {
1993 case MLXSW_REG_RALUE_OP_WRITE_DELETE:
1994 if (!fib_entry->offloaded)
1995 return;
1996 return mlxsw_sp_fib_entry_offload_unset(fib_entry);
1997 case MLXSW_REG_RALUE_OP_WRITE_WRITE:
1998 if (err)
1999 return;
2000 if (mlxsw_sp_fib_entry_should_offload(fib_entry) &&
2001 !fib_entry->offloaded)
2002 mlxsw_sp_fib_entry_offload_set(fib_entry);
2003 else if (!mlxsw_sp_fib_entry_should_offload(fib_entry) &&
2004 fib_entry->offloaded)
2005 mlxsw_sp_fib_entry_offload_unset(fib_entry);
2006 return;
2007 default:
2008 return;
2009 }
2010}
2011
a7ff87ac
JP		 2012static int mlxsw_sp_fib_entry_op4_remote(struct mlxsw_sp *mlxsw_sp,
2013 struct mlxsw_sp_fib_entry *fib_entry,
2014 enum mlxsw_reg_ralue_op op)
2015{
2016 char ralue_pl[MLXSW_REG_RALUE_LEN];
76610ebb 2017 struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib;
9aecce1c 2018 u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr;
a7ff87ac
JP		 2019 enum mlxsw_reg_ralue_trap_action trap_action;
2020 u16 trap_id = 0;
2021 u32 adjacency_index = 0;
2022 u16 ecmp_size = 0;
2023
2024 /* In case the nexthop group adjacency index is valid, use it
2025 * with provided ECMP size. Otherwise, setup trap and pass
2026 * traffic to kernel.
2027 */
4b411477 2028 if (mlxsw_sp_fib_entry_should_offload(fib_entry)) {
a7ff87ac
JP		 2029 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP;
2030 adjacency_index = fib_entry->nh_group->adj_index;
2031 ecmp_size = fib_entry->nh_group->ecmp_size;
2032 } else {
2033 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP;
2034 trap_id = MLXSW_TRAP_ID_RTR_INGRESS0;
2035 }
2036
1a9234e6 2037 mlxsw_reg_ralue_pack4(ralue_pl,
76610ebb
IS		 2038 (enum mlxsw_reg_ralxx_protocol) fib->proto, op,
2039 fib->vr->id, fib_entry->fib_node->key.prefix_len,
9aecce1c 2040 *p_dip);
a7ff87ac
JP		 2041 mlxsw_reg_ralue_act_remote_pack(ralue_pl, trap_action, trap_id,
2042 adjacency_index, ecmp_size);
2043 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
2044}
2045
61c503f9
JP		 2046static int mlxsw_sp_fib_entry_op4_local(struct mlxsw_sp *mlxsw_sp,
2047 struct mlxsw_sp_fib_entry *fib_entry,
2048 enum mlxsw_reg_ralue_op op)
2049{
bf95233e 2050 struct mlxsw_sp_rif *rif = fib_entry->nh_group->nh_rif;
76610ebb 2051 struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib;
70ad3506 2052 enum mlxsw_reg_ralue_trap_action trap_action;
61c503f9 2053 char ralue_pl[MLXSW_REG_RALUE_LEN];
9aecce1c 2054 u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr;
70ad3506 2055 u16 trap_id = 0;
bf95233e 2056 u16 rif_index = 0;
70ad3506
IS		 2057
2058 if (mlxsw_sp_fib_entry_should_offload(fib_entry)) {
2059 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP;
bf95233e 2060 rif_index = rif->rif_index;
70ad3506
IS		 2061 } else {
2062 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP;
2063 trap_id = MLXSW_TRAP_ID_RTR_INGRESS0;
2064 }
61c503f9 2065
1a9234e6 2066 mlxsw_reg_ralue_pack4(ralue_pl,
76610ebb
IS		 2067 (enum mlxsw_reg_ralxx_protocol) fib->proto, op,
2068 fib->vr->id, fib_entry->fib_node->key.prefix_len,
9aecce1c 2069 *p_dip);
bf95233e
AS		 2070 mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id,
2071 rif_index);
61c503f9
JP		 2072 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
2073}
2074
2075static int mlxsw_sp_fib_entry_op4_trap(struct mlxsw_sp *mlxsw_sp,
2076 struct mlxsw_sp_fib_entry *fib_entry,
2077 enum mlxsw_reg_ralue_op op)
2078{
76610ebb 2079 struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib;
61c503f9 2080 char ralue_pl[MLXSW_REG_RALUE_LEN];
9aecce1c 2081 u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr;
61c503f9 2082
1a9234e6 2083 mlxsw_reg_ralue_pack4(ralue_pl,
76610ebb
IS		 2084 (enum mlxsw_reg_ralxx_protocol) fib->proto, op,
2085 fib->vr->id, fib_entry->fib_node->key.prefix_len,
9aecce1c 2086 *p_dip);
61c503f9
JP		 2087 mlxsw_reg_ralue_act_ip2me_pack(ralue_pl);
2088 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
2089}
2090
2091static int mlxsw_sp_fib_entry_op4(struct mlxsw_sp *mlxsw_sp,
2092 struct mlxsw_sp_fib_entry *fib_entry,
2093 enum mlxsw_reg_ralue_op op)
2094{
2095 switch (fib_entry->type) {
2096 case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE:
a7ff87ac 2097 return mlxsw_sp_fib_entry_op4_remote(mlxsw_sp, fib_entry, op);
61c503f9
JP		 2098 case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL:
2099 return mlxsw_sp_fib_entry_op4_local(mlxsw_sp, fib_entry, op);
2100 case MLXSW_SP_FIB_ENTRY_TYPE_TRAP:
2101 return mlxsw_sp_fib_entry_op4_trap(mlxsw_sp, fib_entry, op);
2102 }
2103 return -EINVAL;
2104}
2105
2106static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp,
2107 struct mlxsw_sp_fib_entry *fib_entry,
2108 enum mlxsw_reg_ralue_op op)
2109{
013b20f9
IS		 2110 int err = -EINVAL;
2111
76610ebb 2112 switch (fib_entry->fib_node->fib->proto) {
61c503f9 2113 case MLXSW_SP_L3_PROTO_IPV4:
013b20f9
IS		 2114 err = mlxsw_sp_fib_entry_op4(mlxsw_sp, fib_entry, op);
2115 break;
61c503f9 2116 case MLXSW_SP_L3_PROTO_IPV6:
013b20f9 2117 return err;
61c503f9 2118 }
013b20f9
IS		 2119 mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, err);
2120 return err;
61c503f9
JP		 2121}
2122
2123static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp,
2124 struct mlxsw_sp_fib_entry *fib_entry)
2125{
7146da31
JP		 2126 return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry,
2127 MLXSW_REG_RALUE_OP_WRITE_WRITE);
61c503f9
JP		 2128}
2129
2130static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp,
2131 struct mlxsw_sp_fib_entry *fib_entry)
2132{
2133 return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry,
2134 MLXSW_REG_RALUE_OP_WRITE_DELETE);
2135}
2136
61c503f9 2137static int
013b20f9
IS		 2138mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp,
2139 const struct fib_entry_notifier_info *fen_info,
2140 struct mlxsw_sp_fib_entry *fib_entry)
61c503f9 2141{
b45f64d1 2142 struct fib_info *fi = fen_info->fi;
61c503f9 2143
97989ee0
IS		 2144 switch (fen_info->type) {
2145 case RTN_BROADCAST: /* fall through */
2146 case RTN_LOCAL:
61c503f9
JP		 2147 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP;
2148 return 0;
97989ee0
IS		 2149 case RTN_UNREACHABLE: /* fall through */
2150 case RTN_BLACKHOLE: /* fall through */
2151 case RTN_PROHIBIT:
2152 /* Packets hitting these routes need to be trapped, but
2153 * can do so with a lower priority than packets directed
2154 * at the host, so use action type local instead of trap.
2155 */
61c503f9 2156 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL;
97989ee0
IS		 2157 return 0;
2158 case RTN_UNICAST:
2159 if (fi->fib_nh->nh_scope != RT_SCOPE_LINK)
2160 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL;
2161 else
2162 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE;
2163 return 0;
2164 default:
2165 return -EINVAL;
2166 }
a7ff87ac
JP		 2167}
2168
5b004412 2169static struct mlxsw_sp_fib_entry *
9aecce1c
IS		 2170mlxsw_sp_fib4_entry_create(struct mlxsw_sp *mlxsw_sp,
2171 struct mlxsw_sp_fib_node *fib_node,
2172 const struct fib_entry_notifier_info *fen_info)
61c503f9 2173{
61c503f9 2174 struct mlxsw_sp_fib_entry *fib_entry;
61c503f9
JP		 2175 int err;
2176
9aecce1c 2177 fib_entry = kzalloc(sizeof(*fib_entry), GFP_KERNEL);
61c503f9
JP		 2178 if (!fib_entry) {
2179 err = -ENOMEM;
9aecce1c 2180 goto err_fib_entry_alloc;
61c503f9 2181 }
61c503f9 2182
013b20f9 2183 err = mlxsw_sp_fib4_entry_type_set(mlxsw_sp, fen_info, fib_entry);
61c503f9 2184 if (err)
013b20f9 2185 goto err_fib4_entry_type_set;
61c503f9 2186
9aecce1c 2187 err = mlxsw_sp_nexthop_group_get(mlxsw_sp, fib_entry, fen_info->fi);
b8399a1e
IS		 2188 if (err)
2189 goto err_nexthop_group_get;
2190
9aecce1c
IS		 2191 fib_entry->params.prio = fen_info->fi->fib_priority;
2192 fib_entry->params.tb_id = fen_info->tb_id;
2193 fib_entry->params.type = fen_info->type;
2194 fib_entry->params.tos = fen_info->tos;
2195
2196 fib_entry->fib_node = fib_node;
2197
5b004412
JP		 2198 return fib_entry;
2199
b8399a1e 2200err_nexthop_group_get:
013b20f9 2201err_fib4_entry_type_set:
9aecce1c
IS		 2202 kfree(fib_entry);
2203err_fib_entry_alloc:
5b004412
JP		 2204 return ERR_PTR(err);
2205}
2206
9aecce1c
IS		 2207static void mlxsw_sp_fib4_entry_destroy(struct mlxsw_sp *mlxsw_sp,
2208 struct mlxsw_sp_fib_entry *fib_entry)
2209{
2210 mlxsw_sp_nexthop_group_put(mlxsw_sp, fib_entry);
2211 kfree(fib_entry);
2212}
2213
2214static struct mlxsw_sp_fib_node *
2215mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp,
2216 const struct fib_entry_notifier_info *fen_info);
2217
5b004412 2218static struct mlxsw_sp_fib_entry *
9aecce1c
IS		 2219mlxsw_sp_fib4_entry_lookup(struct mlxsw_sp *mlxsw_sp,
2220 const struct fib_entry_notifier_info *fen_info)
5b004412 2221{
9aecce1c
IS		 2222 struct mlxsw_sp_fib_entry *fib_entry;
2223 struct mlxsw_sp_fib_node *fib_node;
5b004412 2224
9aecce1c
IS		 2225 fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info);
2226 if (IS_ERR(fib_node))
2227 return NULL;
2228
2229 list_for_each_entry(fib_entry, &fib_node->entry_list, list) {
2230 if (fib_entry->params.tb_id == fen_info->tb_id &&
2231 fib_entry->params.tos == fen_info->tos &&
2232 fib_entry->params.type == fen_info->type &&
2233 fib_entry->nh_group->key.fi == fen_info->fi) {
2234 return fib_entry;
2235 }
2236 }
2237
2238 return NULL;
2239}
2240
2241static const struct rhashtable_params mlxsw_sp_fib_ht_params = {
2242 .key_offset = offsetof(struct mlxsw_sp_fib_node, key),
2243 .head_offset = offsetof(struct mlxsw_sp_fib_node, ht_node),
2244 .key_len = sizeof(struct mlxsw_sp_fib_key),
2245 .automatic_shrinking = true,
2246};
2247
2248static int mlxsw_sp_fib_node_insert(struct mlxsw_sp_fib *fib,
2249 struct mlxsw_sp_fib_node *fib_node)
2250{
2251 return rhashtable_insert_fast(&fib->ht, &fib_node->ht_node,
2252 mlxsw_sp_fib_ht_params);
2253}
2254
2255static void mlxsw_sp_fib_node_remove(struct mlxsw_sp_fib *fib,
2256 struct mlxsw_sp_fib_node *fib_node)
2257{
2258 rhashtable_remove_fast(&fib->ht, &fib_node->ht_node,
2259 mlxsw_sp_fib_ht_params);
2260}
2261
2262static struct mlxsw_sp_fib_node *
2263mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr,
2264 size_t addr_len, unsigned char prefix_len)
2265{
2266 struct mlxsw_sp_fib_key key;
2267
2268 memset(&key, 0, sizeof(key));
2269 memcpy(key.addr, addr, addr_len);
2270 key.prefix_len = prefix_len;
2271 return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params);
2272}
2273
2274static struct mlxsw_sp_fib_node *
76610ebb 2275mlxsw_sp_fib_node_create(struct mlxsw_sp_fib *fib, const void *addr,
9aecce1c
IS		 2276 size_t addr_len, unsigned char prefix_len)
2277{
2278 struct mlxsw_sp_fib_node *fib_node;
2279
2280 fib_node = kzalloc(sizeof(*fib_node), GFP_KERNEL);
2281 if (!fib_node)
5b004412
JP		 2282 return NULL;
2283
9aecce1c 2284 INIT_LIST_HEAD(&fib_node->entry_list);
76610ebb 2285 list_add(&fib_node->list, &fib->node_list);
9aecce1c
IS		 2286 memcpy(fib_node->key.addr, addr, addr_len);
2287 fib_node->key.prefix_len = prefix_len;
9aecce1c
IS		 2288
2289 return fib_node;
2290}
2291
2292static void mlxsw_sp_fib_node_destroy(struct mlxsw_sp_fib_node *fib_node)
2293{
9aecce1c
IS		 2294 list_del(&fib_node->list);
2295 WARN_ON(!list_empty(&fib_node->entry_list));
2296 kfree(fib_node);
2297}
2298
2299static bool
2300mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node,
2301 const struct mlxsw_sp_fib_entry *fib_entry)
2302{
2303 return list_first_entry(&fib_node->entry_list,
2304 struct mlxsw_sp_fib_entry, list) == fib_entry;
2305}
2306
2307static void mlxsw_sp_fib_node_prefix_inc(struct mlxsw_sp_fib_node *fib_node)
2308{
2309 unsigned char prefix_len = fib_node->key.prefix_len;
76610ebb 2310 struct mlxsw_sp_fib *fib = fib_node->fib;
9aecce1c
IS		 2311
2312 if (fib->prefix_ref_count[prefix_len]++ == 0)
2313 mlxsw_sp_prefix_usage_set(&fib->prefix_usage, prefix_len);
2314}
2315
2316static void mlxsw_sp_fib_node_prefix_dec(struct mlxsw_sp_fib_node *fib_node)
2317{
2318 unsigned char prefix_len = fib_node->key.prefix_len;
76610ebb 2319 struct mlxsw_sp_fib *fib = fib_node->fib;
9aecce1c
IS		 2320
2321 if (--fib->prefix_ref_count[prefix_len] == 0)
2322 mlxsw_sp_prefix_usage_clear(&fib->prefix_usage, prefix_len);
5b004412
JP		 2323}
2324
76610ebb
IS		 2325static int mlxsw_sp_fib_node_init(struct mlxsw_sp *mlxsw_sp,
2326 struct mlxsw_sp_fib_node *fib_node,
2327 struct mlxsw_sp_fib *fib)
2328{
2329 struct mlxsw_sp_prefix_usage req_prefix_usage;
2330 struct mlxsw_sp_lpm_tree *lpm_tree;
2331 int err;
2332
2333 err = mlxsw_sp_fib_node_insert(fib, fib_node);
2334 if (err)
2335 return err;
2336 fib_node->fib = fib;
2337
2338 mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, &fib->prefix_usage);
2339 mlxsw_sp_prefix_usage_set(&req_prefix_usage, fib_node->key.prefix_len);
2340
2341 if (!mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) {
2342 err = mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib,
2343 &req_prefix_usage);
2344 if (err)
2345 goto err_tree_check;
2346 } else {
2347 lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage,
2348 fib->proto);
2349 if (IS_ERR(lpm_tree))
2350 return PTR_ERR(lpm_tree);
2351 fib->lpm_tree = lpm_tree;
2352 err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib);
2353 if (err)
2354 goto err_tree_bind;
2355 }
2356
2357 mlxsw_sp_fib_node_prefix_inc(fib_node);
2358
2359 return 0;
2360
2361err_tree_bind:
2362 fib->lpm_tree = NULL;
2363 mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree);
2364err_tree_check:
2365 fib_node->fib = NULL;
2366 mlxsw_sp_fib_node_remove(fib, fib_node);
2367 return err;
2368}
2369
2370static void mlxsw_sp_fib_node_fini(struct mlxsw_sp *mlxsw_sp,
2371 struct mlxsw_sp_fib_node *fib_node)
2372{
2373 struct mlxsw_sp_lpm_tree *lpm_tree = fib_node->fib->lpm_tree;
2374 struct mlxsw_sp_fib *fib = fib_node->fib;
2375
2376 mlxsw_sp_fib_node_prefix_dec(fib_node);
2377
2378 if (mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) {
2379 mlxsw_sp_vr_lpm_tree_unbind(mlxsw_sp, fib);
2380 fib->lpm_tree = NULL;
2381 mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree);
2382 } else {
2383 mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib, &fib->prefix_usage);
2384 }
2385
2386 fib_node->fib = NULL;
2387 mlxsw_sp_fib_node_remove(fib, fib_node);
2388}
2389
9aecce1c
IS		 2390static struct mlxsw_sp_fib_node *
2391mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp,
2392 const struct fib_entry_notifier_info *fen_info)
5b004412 2393{
9aecce1c 2394 struct mlxsw_sp_fib_node *fib_node;
76610ebb 2395 struct mlxsw_sp_fib *fib;
9aecce1c
IS		 2396 struct mlxsw_sp_vr *vr;
2397 int err;
2398
76610ebb 2399 vr = mlxsw_sp_vr_get(mlxsw_sp, fen_info->tb_id);
9aecce1c
IS		 2400 if (IS_ERR(vr))
2401 return ERR_CAST(vr);
76610ebb 2402 fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV4);
9aecce1c 2403
76610ebb 2404 fib_node = mlxsw_sp_fib_node_lookup(fib, &fen_info->dst,
9aecce1c
IS		 2405 sizeof(fen_info->dst),
2406 fen_info->dst_len);
2407 if (fib_node)
2408 return fib_node;
5b004412 2409
76610ebb 2410 fib_node = mlxsw_sp_fib_node_create(fib, &fen_info->dst,
9aecce1c
IS		 2411 sizeof(fen_info->dst),
2412 fen_info->dst_len);
2413 if (!fib_node) {
2414 err = -ENOMEM;
2415 goto err_fib_node_create;
5b004412 2416 }
9aecce1c 2417
76610ebb
IS		 2418 err = mlxsw_sp_fib_node_init(mlxsw_sp, fib_node, fib);
2419 if (err)
2420 goto err_fib_node_init;
2421
9aecce1c
IS		 2422 return fib_node;
2423
76610ebb
IS		 2424err_fib_node_init:
2425 mlxsw_sp_fib_node_destroy(fib_node);
9aecce1c 2426err_fib_node_create:
76610ebb 2427 mlxsw_sp_vr_put(vr);
9aecce1c 2428 return ERR_PTR(err);
5b004412
JP		 2429}
2430
9aecce1c
IS		 2431static void mlxsw_sp_fib4_node_put(struct mlxsw_sp *mlxsw_sp,
2432 struct mlxsw_sp_fib_node *fib_node)
5b004412 2433{
76610ebb 2434 struct mlxsw_sp_vr *vr = fib_node->fib->vr;
5b004412 2435
9aecce1c
IS		 2436 if (!list_empty(&fib_node->entry_list))
2437 return;
76610ebb 2438 mlxsw_sp_fib_node_fini(mlxsw_sp, fib_node);
9aecce1c 2439 mlxsw_sp_fib_node_destroy(fib_node);
76610ebb 2440 mlxsw_sp_vr_put(vr);
61c503f9
JP		 2441}
2442
9aecce1c
IS		 2443static struct mlxsw_sp_fib_entry *
2444mlxsw_sp_fib4_node_entry_find(const struct mlxsw_sp_fib_node *fib_node,
2445 const struct mlxsw_sp_fib_entry_params *params)
61c503f9 2446{
61c503f9 2447 struct mlxsw_sp_fib_entry *fib_entry;
9aecce1c
IS		 2448
2449 list_for_each_entry(fib_entry, &fib_node->entry_list, list) {
2450 if (fib_entry->params.tb_id > params->tb_id)
2451 continue;
2452 if (fib_entry->params.tb_id != params->tb_id)
2453 break;
2454 if (fib_entry->params.tos > params->tos)
2455 continue;
2456 if (fib_entry->params.prio >= params->prio ||
2457 fib_entry->params.tos < params->tos)
2458 return fib_entry;
2459 }
2460
2461 return NULL;
2462}
2463
4283bce5
IS		 2464static int mlxsw_sp_fib4_node_list_append(struct mlxsw_sp_fib_entry *fib_entry,
2465 struct mlxsw_sp_fib_entry *new_entry)
2466{
2467 struct mlxsw_sp_fib_node *fib_node;
2468
2469 if (WARN_ON(!fib_entry))
2470 return -EINVAL;
2471
2472 fib_node = fib_entry->fib_node;
2473 list_for_each_entry_from(fib_entry, &fib_node->entry_list, list) {
2474 if (fib_entry->params.tb_id != new_entry->params.tb_id ||
2475 fib_entry->params.tos != new_entry->params.tos ||
2476 fib_entry->params.prio != new_entry->params.prio)
2477 break;
2478 }
2479
2480 list_add_tail(&new_entry->list, &fib_entry->list);
2481 return 0;
2482}
2483
9aecce1c
IS		 2484static int
2485mlxsw_sp_fib4_node_list_insert(struct mlxsw_sp_fib_node *fib_node,
4283bce5 2486 struct mlxsw_sp_fib_entry *new_entry,
599cf8f9 2487 bool replace, bool append)
9aecce1c
IS		 2488{
2489 struct mlxsw_sp_fib_entry *fib_entry;
2490
2491 fib_entry = mlxsw_sp_fib4_node_entry_find(fib_node, &new_entry->params);
2492
4283bce5
IS		 2493 if (append)
2494 return mlxsw_sp_fib4_node_list_append(fib_entry, new_entry);
599cf8f9
IS		 2495 if (replace && WARN_ON(!fib_entry))
2496 return -EINVAL;
4283bce5 2497
599cf8f9
IS		 2498 /* Insert new entry before replaced one, so that we can later
2499 * remove the second.
2500 */
9aecce1c
IS		 2501 if (fib_entry) {
2502 list_add_tail(&new_entry->list, &fib_entry->list);
2503 } else {
2504 struct mlxsw_sp_fib_entry *last;
2505
2506 list_for_each_entry(last, &fib_node->entry_list, list) {
2507 if (new_entry->params.tb_id > last->params.tb_id)
2508 break;
2509 fib_entry = last;
2510 }
2511
2512 if (fib_entry)
2513 list_add(&new_entry->list, &fib_entry->list);
2514 else
2515 list_add(&new_entry->list, &fib_node->entry_list);
2516 }
2517
2518 return 0;
2519}
2520
2521static void
2522mlxsw_sp_fib4_node_list_remove(struct mlxsw_sp_fib_entry *fib_entry)
2523{
2524 list_del(&fib_entry->list);
2525}
2526
2527static int
2528mlxsw_sp_fib4_node_entry_add(struct mlxsw_sp *mlxsw_sp,
2529 const struct mlxsw_sp_fib_node *fib_node,
2530 struct mlxsw_sp_fib_entry *fib_entry)
2531{
2532 if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry))
2533 return 0;
2534
2535 /* To prevent packet loss, overwrite the previously offloaded
2536 * entry.
2537 */
2538 if (!list_is_singular(&fib_node->entry_list)) {
2539 enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE;
2540 struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list);
2541
2542 mlxsw_sp_fib_entry_offload_refresh(n, op, 0);
2543 }
2544
2545 return mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry);
2546}
2547
2548static void
2549mlxsw_sp_fib4_node_entry_del(struct mlxsw_sp *mlxsw_sp,
2550 const struct mlxsw_sp_fib_node *fib_node,
2551 struct mlxsw_sp_fib_entry *fib_entry)
2552{
2553 if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry))
2554 return;
2555
2556 /* Promote the next entry by overwriting the deleted entry */
2557 if (!list_is_singular(&fib_node->entry_list)) {
2558 struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list);
2559 enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE;
2560
2561 mlxsw_sp_fib_entry_update(mlxsw_sp, n);
2562 mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0);
2563 return;
2564 }
2565
2566 mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry);
2567}
2568
2569static int mlxsw_sp_fib4_node_entry_link(struct mlxsw_sp *mlxsw_sp,
4283bce5 2570 struct mlxsw_sp_fib_entry *fib_entry,
599cf8f9 2571 bool replace, bool append)
9aecce1c
IS		 2572{
2573 struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node;
2574 int err;
2575
599cf8f9
IS		 2576 err = mlxsw_sp_fib4_node_list_insert(fib_node, fib_entry, replace,
2577 append);
9aecce1c
IS		 2578 if (err)
2579 return err;
2580
2581 err = mlxsw_sp_fib4_node_entry_add(mlxsw_sp, fib_node, fib_entry);
2582 if (err)
2583 goto err_fib4_node_entry_add;
2584
9aecce1c
IS		 2585 return 0;
2586
2587err_fib4_node_entry_add:
2588 mlxsw_sp_fib4_node_list_remove(fib_entry);
2589 return err;
2590}
2591
2592static void
2593mlxsw_sp_fib4_node_entry_unlink(struct mlxsw_sp *mlxsw_sp,
2594 struct mlxsw_sp_fib_entry *fib_entry)
2595{
2596 struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node;
2597
9aecce1c
IS		 2598 mlxsw_sp_fib4_node_entry_del(mlxsw_sp, fib_node, fib_entry);
2599 mlxsw_sp_fib4_node_list_remove(fib_entry);
2600}
2601
599cf8f9
IS		 2602static void mlxsw_sp_fib4_entry_replace(struct mlxsw_sp *mlxsw_sp,
2603 struct mlxsw_sp_fib_entry *fib_entry,
2604 bool replace)
2605{
2606 struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node;
2607 struct mlxsw_sp_fib_entry *replaced;
2608
2609 if (!replace)
2610 return;
2611
2612 /* We inserted the new entry before replaced one */
2613 replaced = list_next_entry(fib_entry, list);
2614
2615 mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, replaced);
2616 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, replaced);
2617 mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node);
2618}
2619
9aecce1c
IS		 2620static int
2621mlxsw_sp_router_fib4_add(struct mlxsw_sp *mlxsw_sp,
4283bce5 2622 const struct fib_entry_notifier_info *fen_info,
599cf8f9 2623 bool replace, bool append)
9aecce1c
IS		 2624{
2625 struct mlxsw_sp_fib_entry *fib_entry;
2626 struct mlxsw_sp_fib_node *fib_node;
61c503f9
JP		 2627 int err;
2628
9011b677 2629 if (mlxsw_sp->router->aborted)
b45f64d1
JP		 2630 return 0;
2631
9aecce1c
IS		 2632 fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info);
2633 if (IS_ERR(fib_node)) {
2634 dev_warn(mlxsw_sp->bus_info->dev, "Failed to get FIB node\n");
2635 return PTR_ERR(fib_node);
b45f64d1 2636 }
61c503f9 2637
9aecce1c
IS		 2638 fib_entry = mlxsw_sp_fib4_entry_create(mlxsw_sp, fib_node, fen_info);
2639 if (IS_ERR(fib_entry)) {
2640 dev_warn(mlxsw_sp->bus_info->dev, "Failed to create FIB entry\n");
2641 err = PTR_ERR(fib_entry);
2642 goto err_fib4_entry_create;
2643 }
5b004412 2644
599cf8f9
IS		 2645 err = mlxsw_sp_fib4_node_entry_link(mlxsw_sp, fib_entry, replace,
2646 append);
b45f64d1 2647 if (err) {
9aecce1c
IS		 2648 dev_warn(mlxsw_sp->bus_info->dev, "Failed to link FIB entry to node\n");
2649 goto err_fib4_node_entry_link;
b45f64d1 2650 }
9aecce1c 2651
599cf8f9
IS		 2652 mlxsw_sp_fib4_entry_replace(mlxsw_sp, fib_entry, replace);
2653
61c503f9
JP		 2654 return 0;
2655
9aecce1c
IS		 2656err_fib4_node_entry_link:
2657 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry);
2658err_fib4_entry_create:
2659 mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node);
61c503f9
JP		 2660 return err;
2661}
2662
37956d78
JP		 2663static void mlxsw_sp_router_fib4_del(struct mlxsw_sp *mlxsw_sp,
2664 struct fib_entry_notifier_info *fen_info)
61c503f9 2665{
61c503f9 2666 struct mlxsw_sp_fib_entry *fib_entry;
9aecce1c 2667 struct mlxsw_sp_fib_node *fib_node;
61c503f9 2668
9011b677 2669 if (mlxsw_sp->router->aborted)
37956d78 2670 return;
b45f64d1 2671
9aecce1c
IS		 2672 fib_entry = mlxsw_sp_fib4_entry_lookup(mlxsw_sp, fen_info);
2673 if (WARN_ON(!fib_entry))
37956d78 2674 return;
9aecce1c 2675 fib_node = fib_entry->fib_node;
5b004412 2676
9aecce1c
IS		 2677 mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry);
2678 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry);
2679 mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node);
61c503f9 2680}
b45f64d1
JP		 2681
2682static int mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp)
2683{
2684 char ralta_pl[MLXSW_REG_RALTA_LEN];
2685 char ralst_pl[MLXSW_REG_RALST_LEN];
b5d90e6d 2686 int i, err;
b45f64d1
JP		 2687
2688 mlxsw_reg_ralta_pack(ralta_pl, true, MLXSW_REG_RALXX_PROTOCOL_IPV4,
2689 MLXSW_SP_LPM_TREE_MIN);
2690 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl);
2691 if (err)
2692 return err;
2693
2694 mlxsw_reg_ralst_pack(ralst_pl, 0xff, MLXSW_SP_LPM_TREE_MIN);
2695 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl);
2696 if (err)
2697 return err;
2698
b5d90e6d 2699 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
9011b677 2700 struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i];
b5d90e6d
IS		 2701 char raltb_pl[MLXSW_REG_RALTB_LEN];
2702 char ralue_pl[MLXSW_REG_RALUE_LEN];
b45f64d1 2703
b5d90e6d
IS		 2704 if (!mlxsw_sp_vr_is_used(vr))
2705 continue;
2706
2707 mlxsw_reg_raltb_pack(raltb_pl, vr->id,
2708 MLXSW_REG_RALXX_PROTOCOL_IPV4,
2709 MLXSW_SP_LPM_TREE_MIN);
2710 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb),
2711 raltb_pl);
2712 if (err)
2713 return err;
2714
2715 mlxsw_reg_ralue_pack4(ralue_pl, MLXSW_SP_L3_PROTO_IPV4,
2716 MLXSW_REG_RALUE_OP_WRITE_WRITE, vr->id, 0,
2717 0);
2718 mlxsw_reg_ralue_act_ip2me_pack(ralue_pl);
2719 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue),
2720 ralue_pl);
2721 if (err)
2722 return err;
2723 }
2724
2725 return 0;
b45f64d1
JP		 2726}
2727
9aecce1c
IS		 2728static void mlxsw_sp_fib4_node_flush(struct mlxsw_sp *mlxsw_sp,
2729 struct mlxsw_sp_fib_node *fib_node)
2730{
2731 struct mlxsw_sp_fib_entry *fib_entry, *tmp;
2732
2733 list_for_each_entry_safe(fib_entry, tmp, &fib_node->entry_list, list) {
2734 bool do_break = &tmp->list == &fib_node->entry_list;
2735
2736 mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry);
2737 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry);
2738 mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node);
2739 /* Break when entry list is empty and node was freed.
2740 * Otherwise, we'll access freed memory in the next
2741 * iteration.
2742 */
2743 if (do_break)
2744 break;
2745 }
2746}
2747
2748static void mlxsw_sp_fib_node_flush(struct mlxsw_sp *mlxsw_sp,
2749 struct mlxsw_sp_fib_node *fib_node)
2750{
76610ebb 2751 switch (fib_node->fib->proto) {
9aecce1c
IS		 2752 case MLXSW_SP_L3_PROTO_IPV4:
2753 mlxsw_sp_fib4_node_flush(mlxsw_sp, fib_node);
2754 break;
2755 case MLXSW_SP_L3_PROTO_IPV6:
2756 WARN_ON_ONCE(1);
2757 break;
2758 }
2759}
2760
76610ebb
IS		 2761static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp,
2762 struct mlxsw_sp_vr *vr,
2763 enum mlxsw_sp_l3proto proto)
b45f64d1 2764{
76610ebb 2765 struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto);
9aecce1c 2766 struct mlxsw_sp_fib_node *fib_node, *tmp;
76610ebb
IS		 2767
2768 list_for_each_entry_safe(fib_node, tmp, &fib->node_list, list) {
2769 bool do_break = &tmp->list == &fib->node_list;
2770
2771 mlxsw_sp_fib_node_flush(mlxsw_sp, fib_node);
2772 if (do_break)
2773 break;
2774 }
2775}
2776
2777static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp)
2778{
b45f64d1 2779 int i;
b45f64d1 2780
c1a38311 2781 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
9011b677 2782 struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i];
ac571de9 2783
76610ebb 2784 if (!mlxsw_sp_vr_is_used(vr))
b45f64d1 2785 continue;
76610ebb 2786 mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4);
b45f64d1 2787 }
ac571de9
IS		 2788}
2789
2790static void mlxsw_sp_router_fib4_abort(struct mlxsw_sp *mlxsw_sp)
2791{
2792 int err;
2793
9011b677 2794 if (mlxsw_sp->router->aborted)
d331d303
IS		 2795 return;
2796 dev_warn(mlxsw_sp->bus_info->dev, "FIB abort triggered. Note that FIB entries are no longer being offloaded to this device.\n");
ac571de9 2797 mlxsw_sp_router_fib_flush(mlxsw_sp);
9011b677 2798 mlxsw_sp->router->aborted = true;
b45f64d1
JP		 2799 err = mlxsw_sp_router_set_abort_trap(mlxsw_sp);
2800 if (err)
2801 dev_warn(mlxsw_sp->bus_info->dev, "Failed to set abort trap.\n");
2802}
2803
3057224e 2804struct mlxsw_sp_fib_event_work {
a0e4761d 2805 struct work_struct work;
ad178c8e
IS		 2806 union {
2807 struct fib_entry_notifier_info fen_info;
5d7bfd14 2808 struct fib_rule_notifier_info fr_info;
ad178c8e
IS		 2809 struct fib_nh_notifier_info fnh_info;
2810 };
3057224e
IS		 2811 struct mlxsw_sp *mlxsw_sp;
2812 unsigned long event;
2813};
2814
2815static void mlxsw_sp_router_fib_event_work(struct work_struct *work)
b45f64d1 2816{
3057224e 2817 struct mlxsw_sp_fib_event_work *fib_work =
a0e4761d 2818 container_of(work, struct mlxsw_sp_fib_event_work, work);
3057224e 2819 struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp;
5d7bfd14 2820 struct fib_rule *rule;
599cf8f9 2821 bool replace, append;
b45f64d1
JP		 2822 int err;
2823
3057224e
IS		 2824 /* Protect internal structures from changes */
2825 rtnl_lock();
2826 switch (fib_work->event) {
599cf8f9 2827 case FIB_EVENT_ENTRY_REPLACE: /* fall through */
4283bce5 2828 case FIB_EVENT_ENTRY_APPEND: /* fall through */
b45f64d1 2829 case FIB_EVENT_ENTRY_ADD:
599cf8f9 2830 replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE;
4283bce5
IS		 2831 append = fib_work->event == FIB_EVENT_ENTRY_APPEND;
2832 err = mlxsw_sp_router_fib4_add(mlxsw_sp, &fib_work->fen_info,
599cf8f9 2833 replace, append);
b45f64d1
JP		 2834 if (err)
2835 mlxsw_sp_router_fib4_abort(mlxsw_sp);
3057224e 2836 fib_info_put(fib_work->fen_info.fi);
b45f64d1
JP		 2837 break;
2838 case FIB_EVENT_ENTRY_DEL:
3057224e
IS		 2839 mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info);
2840 fib_info_put(fib_work->fen_info.fi);
b45f64d1
JP		 2841 break;
2842 case FIB_EVENT_RULE_ADD: /* fall through */
2843 case FIB_EVENT_RULE_DEL:
5d7bfd14 2844 rule = fib_work->fr_info.rule;
c7f6e665 2845 if (!fib4_rule_default(rule) && !rule->l3mdev)
5d7bfd14
IS		 2846 mlxsw_sp_router_fib4_abort(mlxsw_sp);
2847 fib_rule_put(rule);
b45f64d1 2848 break;
ad178c8e
IS		 2849 case FIB_EVENT_NH_ADD: /* fall through */
2850 case FIB_EVENT_NH_DEL:
2851 mlxsw_sp_nexthop_event(mlxsw_sp, fib_work->event,
2852 fib_work->fnh_info.fib_nh);
2853 fib_info_put(fib_work->fnh_info.fib_nh->nh_parent);
2854 break;
b45f64d1 2855 }
3057224e
IS		 2856 rtnl_unlock();
2857 kfree(fib_work);
2858}
2859
2860/* Called with rcu_read_lock() */
2861static int mlxsw_sp_router_fib_event(struct notifier_block *nb,
2862 unsigned long event, void *ptr)
2863{
3057224e
IS		 2864 struct mlxsw_sp_fib_event_work *fib_work;
2865 struct fib_notifier_info *info = ptr;
7e39d115 2866 struct mlxsw_sp_router *router;
3057224e
IS		 2867
2868 if (!net_eq(info->net, &init_net))
2869 return NOTIFY_DONE;
2870
2871 fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC);
2872 if (WARN_ON(!fib_work))
2873 return NOTIFY_BAD;
2874
a0e4761d 2875 INIT_WORK(&fib_work->work, mlxsw_sp_router_fib_event_work);
7e39d115
IS		 2876 router = container_of(nb, struct mlxsw_sp_router, fib_nb);
2877 fib_work->mlxsw_sp = router->mlxsw_sp;
3057224e
IS		 2878 fib_work->event = event;
2879
2880 switch (event) {
599cf8f9 2881 case FIB_EVENT_ENTRY_REPLACE: /* fall through */
4283bce5 2882 case FIB_EVENT_ENTRY_APPEND: /* fall through */
3057224e
IS		 2883 case FIB_EVENT_ENTRY_ADD: /* fall through */
2884 case FIB_EVENT_ENTRY_DEL:
2885 memcpy(&fib_work->fen_info, ptr, sizeof(fib_work->fen_info));
2886 /* Take referece on fib_info to prevent it from being
2887 * freed while work is queued. Release it afterwards.
2888 */
2889 fib_info_hold(fib_work->fen_info.fi);
2890 break;
5d7bfd14
IS		 2891 case FIB_EVENT_RULE_ADD: /* fall through */
2892 case FIB_EVENT_RULE_DEL:
2893 memcpy(&fib_work->fr_info, ptr, sizeof(fib_work->fr_info));
2894 fib_rule_get(fib_work->fr_info.rule);
2895 break;
ad178c8e
IS		 2896 case FIB_EVENT_NH_ADD: /* fall through */
2897 case FIB_EVENT_NH_DEL:
2898 memcpy(&fib_work->fnh_info, ptr, sizeof(fib_work->fnh_info));
2899 fib_info_hold(fib_work->fnh_info.fib_nh->nh_parent);
2900 break;
3057224e
IS		 2901 }
2902
a0e4761d 2903 mlxsw_core_schedule_work(&fib_work->work);
3057224e 2904
b45f64d1
JP		 2905 return NOTIFY_DONE;
2906}
2907
4724ba56
IS		 2908static struct mlxsw_sp_rif *
2909mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp,
2910 const struct net_device *dev)
2911{
2912 int i;
2913
2914 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++)
5f9efffb
IS		 2915 if (mlxsw_sp->router->rifs[i] &&
2916 mlxsw_sp->router->rifs[i]->dev == dev)
2917 return mlxsw_sp->router->rifs[i];
4724ba56
IS		 2918
2919 return NULL;
2920}
2921
2922static int mlxsw_sp_router_rif_disable(struct mlxsw_sp *mlxsw_sp, u16 rif)
2923{
2924 char ritr_pl[MLXSW_REG_RITR_LEN];
2925 int err;
2926
2927 mlxsw_reg_ritr_rif_pack(ritr_pl, rif);
2928 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
2929 if (WARN_ON_ONCE(err))
2930 return err;
2931
2932 mlxsw_reg_ritr_enable_set(ritr_pl, false);
2933 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
2934}
2935
2936static void mlxsw_sp_router_rif_gone_sync(struct mlxsw_sp *mlxsw_sp,
bf95233e 2937 struct mlxsw_sp_rif *rif)
4724ba56 2938{
bf95233e
AS		 2939 mlxsw_sp_router_rif_disable(mlxsw_sp, rif->rif_index);
2940 mlxsw_sp_nexthop_rif_gone_sync(mlxsw_sp, rif);
2941 mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, rif);
4724ba56
IS		 2942}
2943
bf95233e 2944static bool mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *rif,
4724ba56
IS		 2945 const struct in_device *in_dev,
2946 unsigned long event)
2947{
2948 switch (event) {
2949 case NETDEV_UP:
bf95233e 2950 if (!rif)
4724ba56
IS		 2951 return true;
2952 return false;
2953 case NETDEV_DOWN:
bf95233e
AS		 2954 if (rif && !in_dev->ifa_list &&
2955 !netif_is_l3_slave(rif->dev))
4724ba56
IS		 2956 return true;
2957 /* It is possible we already removed the RIF ourselves
2958 * if it was assigned to a netdev that is now a bridge
2959 * or LAG slave.
2960 */
2961 return false;
2962 }
2963
2964 return false;
2965}
2966
e4f3c1c1
IS		 2967static enum mlxsw_sp_rif_type
2968mlxsw_sp_dev_rif_type(const struct mlxsw_sp *mlxsw_sp,
2969 const struct net_device *dev)
2970{
2971 enum mlxsw_sp_fid_type type;
2972
2973 /* RIF type is derived from the type of the underlying FID */
2974 if (is_vlan_dev(dev) && netif_is_bridge_master(vlan_dev_real_dev(dev)))
2975 type = MLXSW_SP_FID_TYPE_8021Q;
2976 else if (netif_is_bridge_master(dev) && br_vlan_enabled(dev))
2977 type = MLXSW_SP_FID_TYPE_8021Q;
2978 else if (netif_is_bridge_master(dev))
2979 type = MLXSW_SP_FID_TYPE_8021D;
2980 else
2981 type = MLXSW_SP_FID_TYPE_RFID;
2982
2983 return mlxsw_sp_fid_type_rif_type(mlxsw_sp, type);
2984}
2985
de5ed99e 2986static int mlxsw_sp_rif_index_alloc(struct mlxsw_sp *mlxsw_sp, u16 *p_rif_index)
4724ba56
IS		 2987{
2988 int i;
2989
de5ed99e
IS		 2990 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) {
2991 if (!mlxsw_sp->router->rifs[i]) {
2992 *p_rif_index = i;
2993 return 0;
2994 }
2995 }
4724ba56 2996
de5ed99e 2997 return -ENOBUFS;
4724ba56
IS		 2998}
2999
e4f3c1c1
IS		 3000static struct mlxsw_sp_rif *mlxsw_sp_rif_alloc(size_t rif_size, u16 rif_index,
3001 u16 vr_id,
3002 struct net_device *l3_dev)
4724ba56 3003{
bf95233e 3004 struct mlxsw_sp_rif *rif;
4724ba56 3005
e4f3c1c1 3006 rif = kzalloc(rif_size, GFP_KERNEL);
bf95233e 3007 if (!rif)
4724ba56
IS		 3008 return NULL;
3009
bf95233e
AS		 3010 INIT_LIST_HEAD(&rif->nexthop_list);
3011 INIT_LIST_HEAD(&rif->neigh_list);
3012 ether_addr_copy(rif->addr, l3_dev->dev_addr);
3013 rif->mtu = l3_dev->mtu;
3014 rif->vr_id = vr_id;
3015 rif->dev = l3_dev;
3016 rif->rif_index = rif_index;
4724ba56 3017
bf95233e 3018 return rif;
4724ba56
IS		 3019}
3020
5f9efffb
IS		 3021struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp,
3022 u16 rif_index)
3023{
3024 return mlxsw_sp->router->rifs[rif_index];
3025}
3026
fd1b9d41
AS		 3027u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif)
3028{
3029 return rif->rif_index;
3030}
3031
3032int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif)
3033{
3034 return rif->dev->ifindex;
3035}
3036
4724ba56 3037static struct mlxsw_sp_rif *
e4f3c1c1
IS		 3038mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp,
3039 const struct mlxsw_sp_rif_params *params)
4724ba56 3040{
e4f3c1c1
IS		 3041 u32 tb_id = l3mdev_fib_table(params->dev);
3042 const struct mlxsw_sp_rif_ops *ops;
3043 enum mlxsw_sp_rif_type type;
bf95233e 3044 struct mlxsw_sp_rif *rif;
a1107487
IS		 3045 struct mlxsw_sp_fid *fid;
3046 struct mlxsw_sp_vr *vr;
3047 u16 rif_index;
4724ba56
IS		 3048 int err;
3049
e4f3c1c1
IS		 3050 type = mlxsw_sp_dev_rif_type(mlxsw_sp, params->dev);
3051 ops = mlxsw_sp->router->rif_ops_arr[type];
3052
c9ec53f0
IS		 3053 vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN);
3054 if (IS_ERR(vr))
3055 return ERR_CAST(vr);
3056
de5ed99e
IS		 3057 err = mlxsw_sp_rif_index_alloc(mlxsw_sp, &rif_index);
3058 if (err)
3059 goto err_rif_index_alloc;
4724ba56 3060
e4f3c1c1 3061 rif = mlxsw_sp_rif_alloc(ops->rif_size, rif_index, vr->id, params->dev);
a13a594d
IS		 3062 if (!rif) {
3063 err = -ENOMEM;
3064 goto err_rif_alloc;
3065 }
e4f3c1c1
IS		 3066 rif->mlxsw_sp = mlxsw_sp;
3067 rif->ops = ops;
a13a594d 3068
e4f3c1c1
IS		 3069 fid = ops->fid_get(rif);
3070 if (IS_ERR(fid)) {
3071 err = PTR_ERR(fid);
3072 goto err_fid_get;
4d93ceeb 3073 }
e4f3c1c1 3074 rif->fid = fid;
4d93ceeb 3075
e4f3c1c1
IS		 3076 if (ops->setup)
3077 ops->setup(rif, params);
3078
3079 err = ops->configure(rif);
4724ba56 3080 if (err)
e4f3c1c1 3081 goto err_configure;
4724ba56 3082
e4f3c1c1 3083 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, params->dev->dev_addr,
a1107487 3084 mlxsw_sp_fid_index(fid), true);
4724ba56
IS		 3085 if (err)
3086 goto err_rif_fdb_op;
3087
e4f3c1c1 3088 mlxsw_sp_rif_counters_alloc(rif);
a1107487 3089 mlxsw_sp_fid_rif_set(fid, rif);
5f9efffb 3090 mlxsw_sp->router->rifs[rif_index] = rif;
6913229e 3091 vr->rif_count++;
4724ba56 3092
bf95233e 3093 return rif;
4724ba56 3094
4724ba56 3095err_rif_fdb_op:
e4f3c1c1
IS		 3096 ops->deconfigure(rif);
3097err_configure:
a1107487
IS		 3098 mlxsw_sp_fid_put(fid);
3099err_fid_get:
e4f3c1c1
IS		 3100 kfree(rif);
3101err_rif_alloc:
de5ed99e 3102err_rif_index_alloc:
c9ec53f0 3103 mlxsw_sp_vr_put(vr);
4724ba56
IS		 3104 return ERR_PTR(err);
3105}
3106
e4f3c1c1 3107void mlxsw_sp_rif_destroy(struct mlxsw_sp_rif *rif)
4724ba56 3108{
e4f3c1c1
IS		 3109 const struct mlxsw_sp_rif_ops *ops = rif->ops;
3110 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
a1107487 3111 struct mlxsw_sp_fid *fid = rif->fid;
e4f3c1c1 3112 struct mlxsw_sp_vr *vr;
4724ba56 3113
bf95233e 3114 mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif);
e4f3c1c1 3115 vr = &mlxsw_sp->router->vrs[rif->vr_id];
e0c0afd8 3116
6913229e 3117 vr->rif_count--;
e4f3c1c1 3118 mlxsw_sp->router->rifs[rif->rif_index] = NULL;
a1107487 3119 mlxsw_sp_fid_rif_set(fid, NULL);
e4f3c1c1
IS		 3120 mlxsw_sp_rif_counters_free(rif);
3121 mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->dev->dev_addr,
3122 mlxsw_sp_fid_index(fid), false);
3123 ops->deconfigure(rif);
a1107487 3124 mlxsw_sp_fid_put(fid);
e4f3c1c1 3125 kfree(rif);
c9ec53f0 3126 mlxsw_sp_vr_put(vr);
4724ba56
IS		 3127}
3128
e4f3c1c1
IS		 3129static void
3130mlxsw_sp_rif_subport_params_init(struct mlxsw_sp_rif_params *params,
3131 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
3132{
3133 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
3134
3135 params->vid = mlxsw_sp_port_vlan->vid;
3136 params->lag = mlxsw_sp_port->lagged;
3137 if (params->lag)
3138 params->lag_id = mlxsw_sp_port->lag_id;
3139 else
3140 params->system_port = mlxsw_sp_port->local_port;
3141}
3142
7cbecf24 3143static int
a1107487 3144mlxsw_sp_port_vlan_router_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan,
7cbecf24 3145 struct net_device *l3_dev)
4724ba56 3146{
7cbecf24 3147 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
1b8f09a0 3148 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
7cbecf24 3149 u16 vid = mlxsw_sp_port_vlan->vid;
bf95233e 3150 struct mlxsw_sp_rif *rif;
a1107487 3151 struct mlxsw_sp_fid *fid;
03ea01e9 3152 int err;
4724ba56 3153
1b8f09a0 3154 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
bf95233e 3155 if (!rif) {
e4f3c1c1
IS		 3156 struct mlxsw_sp_rif_params params = {
3157 .dev = l3_dev,
3158 };
3159
3160 mlxsw_sp_rif_subport_params_init(&params, mlxsw_sp_port_vlan);
3161 rif = mlxsw_sp_rif_create(mlxsw_sp, &params);
bf95233e
AS		 3162 if (IS_ERR(rif))
3163 return PTR_ERR(rif);
4724ba56
IS		 3164 }
3165
a1107487 3166 /* FID was already created, just take a reference */
e4f3c1c1 3167 fid = rif->ops->fid_get(rif);
a1107487
IS		 3168 err = mlxsw_sp_fid_port_vid_map(fid, mlxsw_sp_port, vid);
3169 if (err)
3170 goto err_fid_port_vid_map;
3171
7cbecf24 3172 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false);
03ea01e9
IS		 3173 if (err)
3174 goto err_port_vid_learning_set;
3175
7cbecf24 3176 err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid,
03ea01e9
IS		 3177 BR_STATE_FORWARDING);
3178 if (err)
3179 goto err_port_vid_stp_set;
3180
a1107487 3181 mlxsw_sp_port_vlan->fid = fid;
4724ba56 3182
4724ba56 3183 return 0;
03ea01e9
IS		 3184
3185err_port_vid_stp_set:
7cbecf24 3186 mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true);
03ea01e9 3187err_port_vid_learning_set:
a1107487
IS		 3188 mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid);
3189err_fid_port_vid_map:
3190 mlxsw_sp_fid_put(fid);
03ea01e9 3191 return err;
4724ba56
IS		 3192}
3193
a1107487
IS		 3194void
3195mlxsw_sp_port_vlan_router_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
4724ba56 3196{
ce95e154 3197 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
7cbecf24 3198 struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid;
ce95e154 3199 u16 vid = mlxsw_sp_port_vlan->vid;
ce95e154 3200
a1107487
IS		 3201 if (WARN_ON(mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_RFID))
3202 return;
4aafc368 3203
a1107487 3204 mlxsw_sp_port_vlan->fid = NULL;
7cbecf24
IS		 3205 mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_BLOCKING);
3206 mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true);
a1107487
IS		 3207 mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid);
3208 /* If router port holds the last reference on the rFID, then the
3209 * associated Sub-port RIF will be destroyed.
3210 */
3211 mlxsw_sp_fid_put(fid);
4724ba56
IS		 3212}
3213
7cbecf24
IS		 3214static int mlxsw_sp_inetaddr_port_vlan_event(struct net_device *l3_dev,
3215 struct net_device *port_dev,
3216 unsigned long event, u16 vid)
4724ba56
IS		 3217{
3218 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev);
ce95e154 3219 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
4724ba56 3220
ce95e154 3221 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
7cbecf24
IS		 3222 if (WARN_ON(!mlxsw_sp_port_vlan))
3223 return -EINVAL;
4724ba56
IS		 3224
3225 switch (event) {
3226 case NETDEV_UP:
a1107487 3227 return mlxsw_sp_port_vlan_router_join(mlxsw_sp_port_vlan,
7cbecf24 3228 l3_dev);
4724ba56 3229 case NETDEV_DOWN:
a1107487 3230 mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan);
4724ba56
IS		 3231 break;
3232 }
3233
3234 return 0;
3235}
3236
3237static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev,
3238 unsigned long event)
3239{
2b94e58d
JP		 3240 if (netif_is_bridge_port(port_dev) ||
3241 netif_is_lag_port(port_dev) ||
3242 netif_is_ovs_port(port_dev))
4724ba56
IS		 3243 return 0;
3244
7cbecf24 3245 return mlxsw_sp_inetaddr_port_vlan_event(port_dev, port_dev, event, 1);
4724ba56
IS		 3246}
3247
3248static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev,
3249 struct net_device *lag_dev,
3250 unsigned long event, u16 vid)
3251{
3252 struct net_device *port_dev;
3253 struct list_head *iter;
3254 int err;
3255
3256 netdev_for_each_lower_dev(lag_dev, port_dev, iter) {
3257 if (mlxsw_sp_port_dev_check(port_dev)) {
7cbecf24
IS		 3258 err = mlxsw_sp_inetaddr_port_vlan_event(l3_dev,
3259 port_dev,
3260 event, vid);
4724ba56
IS		 3261 if (err)
3262 return err;
3263 }
3264 }
3265
3266 return 0;
3267}
3268
3269static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev,
3270 unsigned long event)
3271{
3272 if (netif_is_bridge_port(lag_dev))
3273 return 0;
3274
3275 return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1);
3276}
3277
4724ba56 3278static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev,
4724ba56
IS		 3279 unsigned long event)
3280{
3281 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev);
e4f3c1c1
IS		 3282 struct mlxsw_sp_rif_params params = {
3283 .dev = l3_dev,
3284 };
a1107487 3285 struct mlxsw_sp_rif *rif;
4724ba56
IS		 3286
3287 switch (event) {
3288 case NETDEV_UP:
e4f3c1c1
IS		 3289 rif = mlxsw_sp_rif_create(mlxsw_sp, &params);
3290 if (IS_ERR(rif))
3291 return PTR_ERR(rif);
3292 break;
4724ba56 3293 case NETDEV_DOWN:
a1107487 3294 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
e4f3c1c1 3295 mlxsw_sp_rif_destroy(rif);
4724ba56
IS		 3296 break;
3297 }
3298
3299 return 0;
3300}
3301
3302static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev,
3303 unsigned long event)
3304{
3305 struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
4724ba56
IS		 3306 u16 vid = vlan_dev_vlan_id(vlan_dev);
3307
6b27c8ad
IS		 3308 if (netif_is_bridge_port(vlan_dev))
3309 return 0;
3310
4724ba56 3311 if (mlxsw_sp_port_dev_check(real_dev))
7cbecf24
IS		 3312 return mlxsw_sp_inetaddr_port_vlan_event(vlan_dev, real_dev,
3313 event, vid);
4724ba56
IS		 3314 else if (netif_is_lag_master(real_dev))
3315 return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event,
3316 vid);
c57529e1 3317 else if (netif_is_bridge_master(real_dev) && br_vlan_enabled(real_dev))
a1107487 3318 return mlxsw_sp_inetaddr_bridge_event(vlan_dev, event);
4724ba56
IS		 3319
3320 return 0;
3321}
3322
b1e45526
IS		 3323static int __mlxsw_sp_inetaddr_event(struct net_device *dev,
3324 unsigned long event)
3325{
3326 if (mlxsw_sp_port_dev_check(dev))
3327 return mlxsw_sp_inetaddr_port_event(dev, event);
3328 else if (netif_is_lag_master(dev))
3329 return mlxsw_sp_inetaddr_lag_event(dev, event);
3330 else if (netif_is_bridge_master(dev))
a1107487 3331 return mlxsw_sp_inetaddr_bridge_event(dev, event);
b1e45526
IS		 3332 else if (is_vlan_dev(dev))
3333 return mlxsw_sp_inetaddr_vlan_event(dev, event);
3334 else
3335 return 0;
3336}
3337
4724ba56
IS		 3338int mlxsw_sp_inetaddr_event(struct notifier_block *unused,
3339 unsigned long event, void *ptr)
3340{
3341 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3342 struct net_device *dev = ifa->ifa_dev->dev;
3343 struct mlxsw_sp *mlxsw_sp;
bf95233e 3344 struct mlxsw_sp_rif *rif;
4724ba56
IS		 3345 int err = 0;
3346
3347 mlxsw_sp = mlxsw_sp_lower_get(dev);
3348 if (!mlxsw_sp)
3349 goto out;
3350
bf95233e
AS		 3351 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
3352 if (!mlxsw_sp_rif_should_config(rif, ifa->ifa_dev, event))
4724ba56
IS		 3353 goto out;
3354
b1e45526 3355 err = __mlxsw_sp_inetaddr_event(dev, event);
4724ba56
IS		 3356out:
3357 return notifier_from_errno(err);
3358}
3359
bf95233e 3360static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index,
4724ba56
IS		 3361 const char *mac, int mtu)
3362{
3363 char ritr_pl[MLXSW_REG_RITR_LEN];
3364 int err;
3365
bf95233e 3366 mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index);
4724ba56
IS		 3367 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3368 if (err)
3369 return err;
3370
3371 mlxsw_reg_ritr_mtu_set(ritr_pl, mtu);
3372 mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac);
3373 mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE);
3374 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3375}
3376
3377int mlxsw_sp_netdevice_router_port_event(struct net_device *dev)
3378{
3379 struct mlxsw_sp *mlxsw_sp;
bf95233e 3380 struct mlxsw_sp_rif *rif;
a1107487 3381 u16 fid_index;
4724ba56
IS		 3382 int err;
3383
3384 mlxsw_sp = mlxsw_sp_lower_get(dev);
3385 if (!mlxsw_sp)
3386 return 0;
3387
bf95233e
AS		 3388 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
3389 if (!rif)
4724ba56 3390 return 0;
a1107487 3391 fid_index = mlxsw_sp_fid_index(rif->fid);
4724ba56 3392
a1107487 3393 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, false);
4724ba56
IS		 3394 if (err)
3395 return err;
3396
bf95233e
AS		 3397 err = mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, dev->dev_addr,
3398 dev->mtu);
4724ba56
IS		 3399 if (err)
3400 goto err_rif_edit;
3401
a1107487 3402 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, fid_index, true);
4724ba56
IS		 3403 if (err)
3404 goto err_rif_fdb_op;
3405
bf95233e
AS		 3406 ether_addr_copy(rif->addr, dev->dev_addr);
3407 rif->mtu = dev->mtu;
4724ba56 3408
bf95233e 3409 netdev_dbg(dev, "Updated RIF=%d\n", rif->rif_index);
4724ba56
IS		 3410
3411 return 0;
3412
3413err_rif_fdb_op:
bf95233e 3414 mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, rif->addr, rif->mtu);
4724ba56 3415err_rif_edit:
a1107487 3416 mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, true);
4724ba56
IS		 3417 return err;
3418}
3419
b1e45526
IS		 3420static int mlxsw_sp_port_vrf_join(struct mlxsw_sp *mlxsw_sp,
3421 struct net_device *l3_dev)
7179eb5a 3422{
b1e45526 3423 struct mlxsw_sp_rif *rif;
7179eb5a 3424
b1e45526
IS		 3425 /* If netdev is already associated with a RIF, then we need to
3426 * destroy it and create a new one with the new virtual router ID.
7179eb5a 3427 */
b1e45526
IS		 3428 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
3429 if (rif)
3430 __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN);
7179eb5a 3431
b1e45526 3432 return __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_UP);
7179eb5a
IS		 3433}
3434
b1e45526
IS		 3435static void mlxsw_sp_port_vrf_leave(struct mlxsw_sp *mlxsw_sp,
3436 struct net_device *l3_dev)
7179eb5a 3437{
b1e45526 3438 struct mlxsw_sp_rif *rif;
7179eb5a 3439
b1e45526
IS		 3440 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
3441 if (!rif)
7179eb5a 3442 return;
b1e45526 3443 __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN);
7179eb5a
IS		 3444}
3445
b1e45526
IS		 3446int mlxsw_sp_netdevice_vrf_event(struct net_device *l3_dev, unsigned long event,
3447 struct netdev_notifier_changeupper_info *info)
3d70e458 3448{
b1e45526
IS		 3449 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev);
3450 int err = 0;
3d70e458 3451
b1e45526
IS		 3452 if (!mlxsw_sp)
3453 return 0;
3d70e458 3454
b1e45526
IS		 3455 switch (event) {
3456 case NETDEV_PRECHANGEUPPER:
3457 return 0;
3458 case NETDEV_CHANGEUPPER:
3459 if (info->linking)
3460 err = mlxsw_sp_port_vrf_join(mlxsw_sp, l3_dev);
3461 else
3462 mlxsw_sp_port_vrf_leave(mlxsw_sp, l3_dev);
3463 break;
3464 }
3d70e458 3465
b1e45526 3466 return err;
3d70e458
IS		 3467}
3468
e4f3c1c1
IS		 3469static struct mlxsw_sp_rif_subport *
3470mlxsw_sp_rif_subport_rif(const struct mlxsw_sp_rif *rif)
a1107487 3471{
e4f3c1c1
IS		 3472 return container_of(rif, struct mlxsw_sp_rif_subport, common);
3473}
3474
3475static void mlxsw_sp_rif_subport_setup(struct mlxsw_sp_rif *rif,
3476 const struct mlxsw_sp_rif_params *params)
3477{
3478 struct mlxsw_sp_rif_subport *rif_subport;
3479
3480 rif_subport = mlxsw_sp_rif_subport_rif(rif);
3481 rif_subport->vid = params->vid;
3482 rif_subport->lag = params->lag;
3483 if (params->lag)
3484 rif_subport->lag_id = params->lag_id;
a1107487 3485 else
e4f3c1c1
IS		 3486 rif_subport->system_port = params->system_port;
3487}
3488
3489static int mlxsw_sp_rif_subport_op(struct mlxsw_sp_rif *rif, bool enable)
3490{
3491 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3492 struct mlxsw_sp_rif_subport *rif_subport;
3493 char ritr_pl[MLXSW_REG_RITR_LEN];
3494
3495 rif_subport = mlxsw_sp_rif_subport_rif(rif);
3496 mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_SP_IF,
3497 rif->rif_index, rif->vr_id, rif->dev->mtu,
3498 rif->dev->dev_addr);
3499 mlxsw_reg_ritr_sp_if_pack(ritr_pl, rif_subport->lag,
3500 rif_subport->lag ? rif_subport->lag_id :
3501 rif_subport->system_port,
3502 rif_subport->vid);
3503
3504 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3505}
3506
3507static int mlxsw_sp_rif_subport_configure(struct mlxsw_sp_rif *rif)
3508{
3509 return mlxsw_sp_rif_subport_op(rif, true);
a1107487
IS		 3510}
3511
e4f3c1c1
IS		 3512static void mlxsw_sp_rif_subport_deconfigure(struct mlxsw_sp_rif *rif)
3513{
3514 mlxsw_sp_rif_subport_op(rif, false);
3515}
3516
3517static struct mlxsw_sp_fid *
3518mlxsw_sp_rif_subport_fid_get(struct mlxsw_sp_rif *rif)
3519{
3520 return mlxsw_sp_fid_rfid_get(rif->mlxsw_sp, rif->rif_index);
3521}
3522
3523static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_subport_ops = {
3524 .type = MLXSW_SP_RIF_TYPE_SUBPORT,
3525 .rif_size = sizeof(struct mlxsw_sp_rif_subport),
3526 .setup = mlxsw_sp_rif_subport_setup,
3527 .configure = mlxsw_sp_rif_subport_configure,
3528 .deconfigure = mlxsw_sp_rif_subport_deconfigure,
3529 .fid_get = mlxsw_sp_rif_subport_fid_get,
3530};
3531
3532static int mlxsw_sp_rif_vlan_fid_op(struct mlxsw_sp_rif *rif,
3533 enum mlxsw_reg_ritr_if_type type,
3534 u16 vid_fid, bool enable)
3535{
3536 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3537 char ritr_pl[MLXSW_REG_RITR_LEN];
3538
3539 mlxsw_reg_ritr_pack(ritr_pl, enable, type, rif->rif_index, rif->vr_id,
3540 rif->dev->mtu, rif->dev->dev_addr);
3541 mlxsw_reg_ritr_fid_set(ritr_pl, type, vid_fid);
3542
3543 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3544}
3545
3546static u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp)
3547{
3548 return mlxsw_core_max_ports(mlxsw_sp->core) + 1;
3549}
3550
3551static int mlxsw_sp_rif_vlan_configure(struct mlxsw_sp_rif *rif)
3552{
3553 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3554 u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid);
3555 int err;
3556
3557 err = mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, true);
3558 if (err)
3559 return err;
3560
3561 err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
3562 mlxsw_sp_router_port(mlxsw_sp), true);
3563 if (err)
3564 goto err_fid_bc_flood_set;
3565
3566 return 0;
3567
3568err_fid_bc_flood_set:
3569 mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, false);
3570 return err;
3571}
3572
3573static void mlxsw_sp_rif_vlan_deconfigure(struct mlxsw_sp_rif *rif)
3574{
3575 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3576 u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid);
3577
3578 mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
3579 mlxsw_sp_router_port(mlxsw_sp), false);
3580 mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_VLAN_IF, vid, false);
3581}
3582
3583static struct mlxsw_sp_fid *
3584mlxsw_sp_rif_vlan_fid_get(struct mlxsw_sp_rif *rif)
3585{
3586 u16 vid = is_vlan_dev(rif->dev) ? vlan_dev_vlan_id(rif->dev) : 1;
3587
3588 return mlxsw_sp_fid_8021q_get(rif->mlxsw_sp, vid);
3589}
3590
3591static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_vlan_ops = {
3592 .type = MLXSW_SP_RIF_TYPE_VLAN,
3593 .rif_size = sizeof(struct mlxsw_sp_rif),
3594 .configure = mlxsw_sp_rif_vlan_configure,
3595 .deconfigure = mlxsw_sp_rif_vlan_deconfigure,
3596 .fid_get = mlxsw_sp_rif_vlan_fid_get,
3597};
3598
3599static int mlxsw_sp_rif_fid_configure(struct mlxsw_sp_rif *rif)
3600{
3601 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3602 u16 fid_index = mlxsw_sp_fid_index(rif->fid);
3603 int err;
3604
3605 err = mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index,
3606 true);
3607 if (err)
3608 return err;
3609
3610 err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
3611 mlxsw_sp_router_port(mlxsw_sp), true);
3612 if (err)
3613 goto err_fid_bc_flood_set;
3614
3615 return 0;
3616
3617err_fid_bc_flood_set:
3618 mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, false);
3619 return err;
3620}
3621
3622static void mlxsw_sp_rif_fid_deconfigure(struct mlxsw_sp_rif *rif)
3623{
3624 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
3625 u16 fid_index = mlxsw_sp_fid_index(rif->fid);
3626
3627 mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
3628 mlxsw_sp_router_port(mlxsw_sp), false);
3629 mlxsw_sp_rif_vlan_fid_op(rif, MLXSW_REG_RITR_FID_IF, fid_index, false);
3630}
3631
3632static struct mlxsw_sp_fid *
3633mlxsw_sp_rif_fid_fid_get(struct mlxsw_sp_rif *rif)
3634{
3635 return mlxsw_sp_fid_8021d_get(rif->mlxsw_sp, rif->dev->ifindex);
3636}
3637
3638static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_fid_ops = {
3639 .type = MLXSW_SP_RIF_TYPE_FID,
3640 .rif_size = sizeof(struct mlxsw_sp_rif),
3641 .configure = mlxsw_sp_rif_fid_configure,
3642 .deconfigure = mlxsw_sp_rif_fid_deconfigure,
3643 .fid_get = mlxsw_sp_rif_fid_fid_get,
3644};
3645
3646static const struct mlxsw_sp_rif_ops *mlxsw_sp_rif_ops_arr[] = {
3647 [MLXSW_SP_RIF_TYPE_SUBPORT] = &mlxsw_sp_rif_subport_ops,
3648 [MLXSW_SP_RIF_TYPE_VLAN] = &mlxsw_sp_rif_vlan_ops,
3649 [MLXSW_SP_RIF_TYPE_FID] = &mlxsw_sp_rif_fid_ops,
3650};
3651
348b8fc3
IS		 3652static int mlxsw_sp_rifs_init(struct mlxsw_sp *mlxsw_sp)
3653{
3654 u64 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS);
3655
3656 mlxsw_sp->router->rifs = kcalloc(max_rifs,
3657 sizeof(struct mlxsw_sp_rif *),
3658 GFP_KERNEL);
3659 if (!mlxsw_sp->router->rifs)
3660 return -ENOMEM;
e4f3c1c1
IS		 3661
3662 mlxsw_sp->router->rif_ops_arr = mlxsw_sp_rif_ops_arr;
3663
348b8fc3
IS		 3664 return 0;
3665}
3666
3667static void mlxsw_sp_rifs_fini(struct mlxsw_sp *mlxsw_sp)
3668{
3669 int i;
3670
3671 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++)
3672 WARN_ON_ONCE(mlxsw_sp->router->rifs[i]);
3673
3674 kfree(mlxsw_sp->router->rifs);
3675}
3676
c3852ef7
IS		 3677static void mlxsw_sp_router_fib_dump_flush(struct notifier_block *nb)
3678{
7e39d115 3679 struct mlxsw_sp_router *router;
c3852ef7
IS		 3680
3681 /* Flush pending FIB notifications and then flush the device's
3682 * table before requesting another dump. The FIB notification
3683 * block is unregistered, so no need to take RTNL.
3684 */
3685 mlxsw_core_flush_owq();
7e39d115
IS		 3686 router = container_of(nb, struct mlxsw_sp_router, fib_nb);
3687 mlxsw_sp_router_fib_flush(router->mlxsw_sp);
c3852ef7
IS		 3688}
3689
4724ba56
IS		 3690static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp)
3691{
3692 char rgcr_pl[MLXSW_REG_RGCR_LEN];
3693 u64 max_rifs;
3694 int err;
3695
3696 if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS))
3697 return -EIO;
4724ba56 3698 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS);
4724ba56 3699
e29237e7 3700 mlxsw_reg_rgcr_pack(rgcr_pl, true, true);
4724ba56
IS		 3701 mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs);
3702 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl);
3703 if (err)
348b8fc3 3704 return err;
4724ba56 3705 return 0;
4724ba56
IS		 3706}
3707
3708static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp)
3709{
3710 char rgcr_pl[MLXSW_REG_RGCR_LEN];
4724ba56 3711
e29237e7 3712 mlxsw_reg_rgcr_pack(rgcr_pl, false, false);
4724ba56 3713 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl);
4724ba56
IS		 3714}
3715
b45f64d1
JP		 3716int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp)
3717{
9011b677 3718 struct mlxsw_sp_router *router;
b45f64d1
JP		 3719 int err;
3720
9011b677
IS		 3721 router = kzalloc(sizeof(*mlxsw_sp->router), GFP_KERNEL);
3722 if (!router)
3723 return -ENOMEM;
3724 mlxsw_sp->router = router;
3725 router->mlxsw_sp = mlxsw_sp;
3726
3727 INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_neighs_list);
b45f64d1
JP		 3728 err = __mlxsw_sp_router_init(mlxsw_sp);
3729 if (err)
9011b677 3730 goto err_router_init;
b45f64d1 3731
348b8fc3
IS		 3732 err = mlxsw_sp_rifs_init(mlxsw_sp);
3733 if (err)
3734 goto err_rifs_init;
3735
9011b677 3736 err = rhashtable_init(&mlxsw_sp->router->nexthop_ht,
c53b8e1b
IS		 3737 &mlxsw_sp_nexthop_ht_params);
3738 if (err)
3739 goto err_nexthop_ht_init;
3740
9011b677 3741 err = rhashtable_init(&mlxsw_sp->router->nexthop_group_ht,
e9ad5e7d
IS		 3742 &mlxsw_sp_nexthop_group_ht_params);
3743 if (err)
3744 goto err_nexthop_group_ht_init;
3745
8494ab06
IS		 3746 err = mlxsw_sp_lpm_init(mlxsw_sp);
3747 if (err)
3748 goto err_lpm_init;
3749
b45f64d1
JP		 3750 err = mlxsw_sp_vrs_init(mlxsw_sp);
3751 if (err)
3752 goto err_vrs_init;
3753
8c9583a8 3754 err = mlxsw_sp_neigh_init(mlxsw_sp);
b45f64d1
JP		 3755 if (err)
3756 goto err_neigh_init;
3757
7e39d115
IS		 3758 mlxsw_sp->router->fib_nb.notifier_call = mlxsw_sp_router_fib_event;
3759 err = register_fib_notifier(&mlxsw_sp->router->fib_nb,
c3852ef7
IS		 3760 mlxsw_sp_router_fib_dump_flush);
3761 if (err)
3762 goto err_register_fib_notifier;
3763
b45f64d1
JP		 3764 return 0;
3765
c3852ef7
IS		 3766err_register_fib_notifier:
3767 mlxsw_sp_neigh_fini(mlxsw_sp);
b45f64d1
JP		 3768err_neigh_init:
3769 mlxsw_sp_vrs_fini(mlxsw_sp);
3770err_vrs_init:
8494ab06
IS		 3771 mlxsw_sp_lpm_fini(mlxsw_sp);
3772err_lpm_init:
9011b677 3773 rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht);
e9ad5e7d 3774err_nexthop_group_ht_init:
9011b677 3775 rhashtable_destroy(&mlxsw_sp->router->nexthop_ht);
c53b8e1b 3776err_nexthop_ht_init:
348b8fc3
IS		 3777 mlxsw_sp_rifs_fini(mlxsw_sp);
3778err_rifs_init:
b45f64d1 3779 __mlxsw_sp_router_fini(mlxsw_sp);
9011b677
IS		 3780err_router_init:
3781 kfree(mlxsw_sp->router);
b45f64d1
JP		 3782 return err;
3783}
3784
3785void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp)
3786{
7e39d115 3787 unregister_fib_notifier(&mlxsw_sp->router->fib_nb);
b45f64d1
JP		 3788 mlxsw_sp_neigh_fini(mlxsw_sp);
3789 mlxsw_sp_vrs_fini(mlxsw_sp);
8494ab06 3790 mlxsw_sp_lpm_fini(mlxsw_sp);
9011b677
IS		 3791 rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht);
3792 rhashtable_destroy(&mlxsw_sp->router->nexthop_ht);
348b8fc3 3793 mlxsw_sp_rifs_fini(mlxsw_sp);
b45f64d1 3794 __mlxsw_sp_router_fini(mlxsw_sp);
9011b677 3795 kfree(mlxsw_sp->router);
b45f64d1 3796}
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