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net/mlx5e: Add discard counters per priority
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1/*
2 * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33#include <net/flow_dissector.h>
34#include <net/sch_generic.h>
35#include <net/pkt_cls.h>
36#include <net/tc_act/tc_gact.h>
37#include <net/tc_act/tc_skbedit.h>
38#include <linux/mlx5/fs.h>
39#include <linux/mlx5/device.h>
40#include <linux/rhashtable.h>
41#include <linux/refcount.h>
42#include <linux/completion.h>
43#include <net/tc_act/tc_mirred.h>
44#include <net/tc_act/tc_vlan.h>
45#include <net/tc_act/tc_tunnel_key.h>
46#include <net/tc_act/tc_pedit.h>
47#include <net/tc_act/tc_csum.h>
48#include <net/arp.h>
49#include <net/ipv6_stubs.h>
50#include "en.h"
51#include "en_rep.h"
52#include "en_tc.h"
53#include "eswitch.h"
54#include "fs_core.h"
55#include "en/port.h"
56#include "en/tc_tun.h"
57#include "lib/devcom.h"
58#include "lib/geneve.h"
59#include "diag/en_tc_tracepoint.h"
60
61struct mlx5_nic_flow_attr {
62 u32 action;
63 u32 flow_tag;
64 struct mlx5_modify_hdr *modify_hdr;
65 u32 hairpin_tirn;
66 u8 match_level;
67 struct mlx5_flow_table *hairpin_ft;
68 struct mlx5_fc *counter;
69};
70
71#define MLX5E_TC_FLOW_BASE (MLX5E_TC_FLAG_LAST_EXPORTED_BIT + 1)
72
73enum {
74 MLX5E_TC_FLOW_FLAG_INGRESS = MLX5E_TC_FLAG_INGRESS_BIT,
75 MLX5E_TC_FLOW_FLAG_EGRESS = MLX5E_TC_FLAG_EGRESS_BIT,
76 MLX5E_TC_FLOW_FLAG_ESWITCH = MLX5E_TC_FLAG_ESW_OFFLOAD_BIT,
77 MLX5E_TC_FLOW_FLAG_FT = MLX5E_TC_FLAG_FT_OFFLOAD_BIT,
78 MLX5E_TC_FLOW_FLAG_NIC = MLX5E_TC_FLAG_NIC_OFFLOAD_BIT,
79 MLX5E_TC_FLOW_FLAG_OFFLOADED = MLX5E_TC_FLOW_BASE,
80 MLX5E_TC_FLOW_FLAG_HAIRPIN = MLX5E_TC_FLOW_BASE + 1,
81 MLX5E_TC_FLOW_FLAG_HAIRPIN_RSS = MLX5E_TC_FLOW_BASE + 2,
82 MLX5E_TC_FLOW_FLAG_SLOW = MLX5E_TC_FLOW_BASE + 3,
83 MLX5E_TC_FLOW_FLAG_DUP = MLX5E_TC_FLOW_BASE + 4,
84 MLX5E_TC_FLOW_FLAG_NOT_READY = MLX5E_TC_FLOW_BASE + 5,
85 MLX5E_TC_FLOW_FLAG_DELETED = MLX5E_TC_FLOW_BASE + 6,
86};
87
88#define MLX5E_TC_MAX_SPLITS 1
89
90/* Helper struct for accessing a struct containing list_head array.
91 * Containing struct
92 * |- Helper array
93 * [0] Helper item 0
94 * |- list_head item 0
95 * |- index (0)
96 * [1] Helper item 1
97 * |- list_head item 1
98 * |- index (1)
99 * To access the containing struct from one of the list_head items:
100 * 1. Get the helper item from the list_head item using
101 * helper item =
102 * container_of(list_head item, helper struct type, list_head field)
103 * 2. Get the contining struct from the helper item and its index in the array:
104 * containing struct =
105 * container_of(helper item, containing struct type, helper field[index])
106 */
107struct encap_flow_item {
108 struct mlx5e_encap_entry *e; /* attached encap instance */
109 struct list_head list;
110 int index;
111};
112
113struct mlx5e_tc_flow {
114 struct rhash_head node;
115 struct mlx5e_priv *priv;
116 u64 cookie;
117 unsigned long flags;
118 struct mlx5_flow_handle *rule[MLX5E_TC_MAX_SPLITS + 1];
119 /* Flow can be associated with multiple encap IDs.
120 * The number of encaps is bounded by the number of supported
121 * destinations.
122 */
123 struct encap_flow_item encaps[MLX5_MAX_FLOW_FWD_VPORTS];
124 struct mlx5e_tc_flow *peer_flow;
125 struct mlx5e_mod_hdr_entry *mh; /* attached mod header instance */
126 struct list_head mod_hdr; /* flows sharing the same mod hdr ID */
127 struct mlx5e_hairpin_entry *hpe; /* attached hairpin instance */
128 struct list_head hairpin; /* flows sharing the same hairpin */
129 struct list_head peer; /* flows with peer flow */
130 struct list_head unready; /* flows not ready to be offloaded (e.g due to missing route) */
131 int tmp_efi_index;
132 struct list_head tmp_list; /* temporary flow list used by neigh update */
133 refcount_t refcnt;
134 struct rcu_head rcu_head;
135 struct completion init_done;
136 union {
137 struct mlx5_esw_flow_attr esw_attr[0];
138 struct mlx5_nic_flow_attr nic_attr[0];
139 };
140};
141
142struct mlx5e_tc_flow_parse_attr {
143 const struct ip_tunnel_info *tun_info[MLX5_MAX_FLOW_FWD_VPORTS];
144 struct net_device *filter_dev;
145 struct mlx5_flow_spec spec;
146 int num_mod_hdr_actions;
147 int max_mod_hdr_actions;
148 void *mod_hdr_actions;
149 int mirred_ifindex[MLX5_MAX_FLOW_FWD_VPORTS];
150};
151
152#define MLX5E_TC_TABLE_NUM_GROUPS 4
153#define MLX5E_TC_TABLE_MAX_GROUP_SIZE BIT(16)
154
155struct mlx5e_hairpin {
156 struct mlx5_hairpin *pair;
157
158 struct mlx5_core_dev *func_mdev;
159 struct mlx5e_priv *func_priv;
160 u32 tdn;
161 u32 tirn;
162
163 int num_channels;
164 struct mlx5e_rqt indir_rqt;
165 u32 indir_tirn[MLX5E_NUM_INDIR_TIRS];
166 struct mlx5e_ttc_table ttc;
167};
168
169struct mlx5e_hairpin_entry {
170 /* a node of a hash table which keeps all the hairpin entries */
171 struct hlist_node hairpin_hlist;
172
173 /* protects flows list */
174 spinlock_t flows_lock;
175 /* flows sharing the same hairpin */
176 struct list_head flows;
177 /* hpe's that were not fully initialized when dead peer update event
178 * function traversed them.
179 */
180 struct list_head dead_peer_wait_list;
181
182 u16 peer_vhca_id;
183 u8 prio;
184 struct mlx5e_hairpin *hp;
185 refcount_t refcnt;
186 struct completion res_ready;
187};
188
189struct mod_hdr_key {
190 int num_actions;
191 void *actions;
192};
193
194struct mlx5e_mod_hdr_entry {
195 /* a node of a hash table which keeps all the mod_hdr entries */
196 struct hlist_node mod_hdr_hlist;
197
198 /* protects flows list */
199 spinlock_t flows_lock;
200 /* flows sharing the same mod_hdr entry */
201 struct list_head flows;
202
203 struct mod_hdr_key key;
204
205 struct mlx5_modify_hdr *modify_hdr;
206
207 refcount_t refcnt;
208 struct completion res_ready;
209 int compl_result;
210};
211
212#define MLX5_MH_ACT_SZ MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto)
213
214static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
215 struct mlx5e_tc_flow *flow);
216
217static struct mlx5e_tc_flow *mlx5e_flow_get(struct mlx5e_tc_flow *flow)
218{
219 if (!flow || !refcount_inc_not_zero(&flow->refcnt))
220 return ERR_PTR(-EINVAL);
221 return flow;
222}
223
224static void mlx5e_flow_put(struct mlx5e_priv *priv,
225 struct mlx5e_tc_flow *flow)
226{
227 if (refcount_dec_and_test(&flow->refcnt)) {
228 mlx5e_tc_del_flow(priv, flow);
229 kfree_rcu(flow, rcu_head);
230 }
231}
232
233static void __flow_flag_set(struct mlx5e_tc_flow *flow, unsigned long flag)
234{
235 /* Complete all memory stores before setting bit. */
236 smp_mb__before_atomic();
237 set_bit(flag, &flow->flags);
238}
239
240#define flow_flag_set(flow, flag) __flow_flag_set(flow, MLX5E_TC_FLOW_FLAG_##flag)
241
242static bool __flow_flag_test_and_set(struct mlx5e_tc_flow *flow,
243 unsigned long flag)
244{
245 /* test_and_set_bit() provides all necessary barriers */
246 return test_and_set_bit(flag, &flow->flags);
247}
248
249#define flow_flag_test_and_set(flow, flag) \
250 __flow_flag_test_and_set(flow, \
251 MLX5E_TC_FLOW_FLAG_##flag)
252
253static void __flow_flag_clear(struct mlx5e_tc_flow *flow, unsigned long flag)
254{
255 /* Complete all memory stores before clearing bit. */
256 smp_mb__before_atomic();
257 clear_bit(flag, &flow->flags);
258}
259
260#define flow_flag_clear(flow, flag) __flow_flag_clear(flow, \
261 MLX5E_TC_FLOW_FLAG_##flag)
262
263static bool __flow_flag_test(struct mlx5e_tc_flow *flow, unsigned long flag)
264{
265 bool ret = test_bit(flag, &flow->flags);
266
267 /* Read fields of flow structure only after checking flags. */
268 smp_mb__after_atomic();
269 return ret;
270}
271
272#define flow_flag_test(flow, flag) __flow_flag_test(flow, \
273 MLX5E_TC_FLOW_FLAG_##flag)
274
275static bool mlx5e_is_eswitch_flow(struct mlx5e_tc_flow *flow)
276{
277 return flow_flag_test(flow, ESWITCH);
278}
279
280static bool mlx5e_is_ft_flow(struct mlx5e_tc_flow *flow)
281{
282 return flow_flag_test(flow, FT);
283}
284
285static bool mlx5e_is_offloaded_flow(struct mlx5e_tc_flow *flow)
286{
287 return flow_flag_test(flow, OFFLOADED);
288}
289
290static inline u32 hash_mod_hdr_info(struct mod_hdr_key *key)
291{
292 return jhash(key->actions,
293 key->num_actions * MLX5_MH_ACT_SZ, 0);
294}
295
296static inline int cmp_mod_hdr_info(struct mod_hdr_key *a,
297 struct mod_hdr_key *b)
298{
299 if (a->num_actions != b->num_actions)
300 return 1;
301
302 return memcmp(a->actions, b->actions, a->num_actions * MLX5_MH_ACT_SZ);
303}
304
305static struct mod_hdr_tbl *
306get_mod_hdr_table(struct mlx5e_priv *priv, int namespace)
307{
308 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
309
310 return namespace == MLX5_FLOW_NAMESPACE_FDB ? &esw->offloads.mod_hdr :
311 &priv->fs.tc.mod_hdr;
312}
313
314static struct mlx5e_mod_hdr_entry *
315mlx5e_mod_hdr_get(struct mod_hdr_tbl *tbl, struct mod_hdr_key *key, u32 hash_key)
316{
317 struct mlx5e_mod_hdr_entry *mh, *found = NULL;
318
319 hash_for_each_possible(tbl->hlist, mh, mod_hdr_hlist, hash_key) {
320 if (!cmp_mod_hdr_info(&mh->key, key)) {
321 refcount_inc(&mh->refcnt);
322 found = mh;
323 break;
324 }
325 }
326
327 return found;
328}
329
330static void mlx5e_mod_hdr_put(struct mlx5e_priv *priv,
331 struct mlx5e_mod_hdr_entry *mh,
332 int namespace)
333{
334 struct mod_hdr_tbl *tbl = get_mod_hdr_table(priv, namespace);
335
336 if (!refcount_dec_and_mutex_lock(&mh->refcnt, &tbl->lock))
337 return;
338 hash_del(&mh->mod_hdr_hlist);
339 mutex_unlock(&tbl->lock);
340
341 WARN_ON(!list_empty(&mh->flows));
342 if (mh->compl_result > 0)
343 mlx5_modify_header_dealloc(priv->mdev, mh->modify_hdr);
344
345 kfree(mh);
346}
347
348static int get_flow_name_space(struct mlx5e_tc_flow *flow)
349{
350 return mlx5e_is_eswitch_flow(flow) ?
351 MLX5_FLOW_NAMESPACE_FDB : MLX5_FLOW_NAMESPACE_KERNEL;
352}
353static int mlx5e_attach_mod_hdr(struct mlx5e_priv *priv,
354 struct mlx5e_tc_flow *flow,
355 struct mlx5e_tc_flow_parse_attr *parse_attr)
356{
357 int num_actions, actions_size, namespace, err;
358 struct mlx5e_mod_hdr_entry *mh;
359 struct mod_hdr_tbl *tbl;
360 struct mod_hdr_key key;
361 u32 hash_key;
362
363 num_actions = parse_attr->num_mod_hdr_actions;
364 actions_size = MLX5_MH_ACT_SZ * num_actions;
365
366 key.actions = parse_attr->mod_hdr_actions;
367 key.num_actions = num_actions;
368
369 hash_key = hash_mod_hdr_info(&key);
370
371 namespace = get_flow_name_space(flow);
372 tbl = get_mod_hdr_table(priv, namespace);
373
374 mutex_lock(&tbl->lock);
375 mh = mlx5e_mod_hdr_get(tbl, &key, hash_key);
376 if (mh) {
377 mutex_unlock(&tbl->lock);
378 wait_for_completion(&mh->res_ready);
379
380 if (mh->compl_result < 0) {
381 err = -EREMOTEIO;
382 goto attach_header_err;
383 }
384 goto attach_flow;
385 }
386
387 mh = kzalloc(sizeof(*mh) + actions_size, GFP_KERNEL);
388 if (!mh) {
389 mutex_unlock(&tbl->lock);
390 return -ENOMEM;
391 }
392
393 mh->key.actions = (void *)mh + sizeof(*mh);
394 memcpy(mh->key.actions, key.actions, actions_size);
395 mh->key.num_actions = num_actions;
396 spin_lock_init(&mh->flows_lock);
397 INIT_LIST_HEAD(&mh->flows);
398 refcount_set(&mh->refcnt, 1);
399 init_completion(&mh->res_ready);
400
401 hash_add(tbl->hlist, &mh->mod_hdr_hlist, hash_key);
402 mutex_unlock(&tbl->lock);
403
404 mh->modify_hdr = mlx5_modify_header_alloc(priv->mdev, namespace,
405 mh->key.num_actions,
406 mh->key.actions);
407 if (IS_ERR(mh->modify_hdr)) {
408 err = PTR_ERR(mh->modify_hdr);
409 mh->compl_result = err;
410 goto alloc_header_err;
411 }
412 mh->compl_result = 1;
413 complete_all(&mh->res_ready);
414
415attach_flow:
416 flow->mh = mh;
417 spin_lock(&mh->flows_lock);
418 list_add(&flow->mod_hdr, &mh->flows);
419 spin_unlock(&mh->flows_lock);
420 if (mlx5e_is_eswitch_flow(flow))
421 flow->esw_attr->modify_hdr = mh->modify_hdr;
422 else
423 flow->nic_attr->modify_hdr = mh->modify_hdr;
424
425 return 0;
426
427alloc_header_err:
428 complete_all(&mh->res_ready);
429attach_header_err:
430 mlx5e_mod_hdr_put(priv, mh, namespace);
431 return err;
432}
433
434static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv,
435 struct mlx5e_tc_flow *flow)
436{
437 /* flow wasn't fully initialized */
438 if (!flow->mh)
439 return;
440
441 spin_lock(&flow->mh->flows_lock);
442 list_del(&flow->mod_hdr);
443 spin_unlock(&flow->mh->flows_lock);
444
445 mlx5e_mod_hdr_put(priv, flow->mh, get_flow_name_space(flow));
446 flow->mh = NULL;
447}
448
449static
450struct mlx5_core_dev *mlx5e_hairpin_get_mdev(struct net *net, int ifindex)
451{
452 struct net_device *netdev;
453 struct mlx5e_priv *priv;
454
455 netdev = __dev_get_by_index(net, ifindex);
456 priv = netdev_priv(netdev);
457 return priv->mdev;
458}
459
460static int mlx5e_hairpin_create_transport(struct mlx5e_hairpin *hp)
461{
462 u32 in[MLX5_ST_SZ_DW(create_tir_in)] = {0};
463 void *tirc;
464 int err;
465
466 err = mlx5_core_alloc_transport_domain(hp->func_mdev, &hp->tdn);
467 if (err)
468 goto alloc_tdn_err;
469
470 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
471
472 MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
473 MLX5_SET(tirc, tirc, inline_rqn, hp->pair->rqn[0]);
474 MLX5_SET(tirc, tirc, transport_domain, hp->tdn);
475
476 err = mlx5_core_create_tir(hp->func_mdev, in, MLX5_ST_SZ_BYTES(create_tir_in), &hp->tirn);
477 if (err)
478 goto create_tir_err;
479
480 return 0;
481
482create_tir_err:
483 mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
484alloc_tdn_err:
485 return err;
486}
487
488static void mlx5e_hairpin_destroy_transport(struct mlx5e_hairpin *hp)
489{
490 mlx5_core_destroy_tir(hp->func_mdev, hp->tirn);
491 mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
492}
493
494static void mlx5e_hairpin_fill_rqt_rqns(struct mlx5e_hairpin *hp, void *rqtc)
495{
496 u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE], rqn;
497 struct mlx5e_priv *priv = hp->func_priv;
498 int i, ix, sz = MLX5E_INDIR_RQT_SIZE;
499
500 mlx5e_build_default_indir_rqt(indirection_rqt, sz,
501 hp->num_channels);
502
503 for (i = 0; i < sz; i++) {
504 ix = i;
505 if (priv->rss_params.hfunc == ETH_RSS_HASH_XOR)
506 ix = mlx5e_bits_invert(i, ilog2(sz));
507 ix = indirection_rqt[ix];
508 rqn = hp->pair->rqn[ix];
509 MLX5_SET(rqtc, rqtc, rq_num[i], rqn);
510 }
511}
512
513static int mlx5e_hairpin_create_indirect_rqt(struct mlx5e_hairpin *hp)
514{
515 int inlen, err, sz = MLX5E_INDIR_RQT_SIZE;
516 struct mlx5e_priv *priv = hp->func_priv;
517 struct mlx5_core_dev *mdev = priv->mdev;
518 void *rqtc;
519 u32 *in;
520
521 inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
522 in = kvzalloc(inlen, GFP_KERNEL);
523 if (!in)
524 return -ENOMEM;
525
526 rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
527
528 MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
529 MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
530
531 mlx5e_hairpin_fill_rqt_rqns(hp, rqtc);
532
533 err = mlx5_core_create_rqt(mdev, in, inlen, &hp->indir_rqt.rqtn);
534 if (!err)
535 hp->indir_rqt.enabled = true;
536
537 kvfree(in);
538 return err;
539}
540
541static int mlx5e_hairpin_create_indirect_tirs(struct mlx5e_hairpin *hp)
542{
543 struct mlx5e_priv *priv = hp->func_priv;
544 u32 in[MLX5_ST_SZ_DW(create_tir_in)];
545 int tt, i, err;
546 void *tirc;
547
548 for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) {
549 struct mlx5e_tirc_config ttconfig = mlx5e_tirc_get_default_config(tt);
550
551 memset(in, 0, MLX5_ST_SZ_BYTES(create_tir_in));
552 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
553
554 MLX5_SET(tirc, tirc, transport_domain, hp->tdn);
555 MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_INDIRECT);
556 MLX5_SET(tirc, tirc, indirect_table, hp->indir_rqt.rqtn);
557 mlx5e_build_indir_tir_ctx_hash(&priv->rss_params, &ttconfig, tirc, false);
558
559 err = mlx5_core_create_tir(hp->func_mdev, in,
560 MLX5_ST_SZ_BYTES(create_tir_in), &hp->indir_tirn[tt]);
561 if (err) {
562 mlx5_core_warn(hp->func_mdev, "create indirect tirs failed, %d\n", err);
563 goto err_destroy_tirs;
564 }
565 }
566 return 0;
567
568err_destroy_tirs:
569 for (i = 0; i < tt; i++)
570 mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[i]);
571 return err;
572}
573
574static void mlx5e_hairpin_destroy_indirect_tirs(struct mlx5e_hairpin *hp)
575{
576 int tt;
577
578 for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
579 mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[tt]);
580}
581
582static void mlx5e_hairpin_set_ttc_params(struct mlx5e_hairpin *hp,
583 struct ttc_params *ttc_params)
584{
585 struct mlx5_flow_table_attr *ft_attr = &ttc_params->ft_attr;
586 int tt;
587
588 memset(ttc_params, 0, sizeof(*ttc_params));
589
590 ttc_params->any_tt_tirn = hp->tirn;
591
592 for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
593 ttc_params->indir_tirn[tt] = hp->indir_tirn[tt];
594
595 ft_attr->max_fte = MLX5E_NUM_TT;
596 ft_attr->level = MLX5E_TC_TTC_FT_LEVEL;
597 ft_attr->prio = MLX5E_TC_PRIO;
598}
599
600static int mlx5e_hairpin_rss_init(struct mlx5e_hairpin *hp)
601{
602 struct mlx5e_priv *priv = hp->func_priv;
603 struct ttc_params ttc_params;
604 int err;
605
606 err = mlx5e_hairpin_create_indirect_rqt(hp);
607 if (err)
608 return err;
609
610 err = mlx5e_hairpin_create_indirect_tirs(hp);
611 if (err)
612 goto err_create_indirect_tirs;
613
614 mlx5e_hairpin_set_ttc_params(hp, &ttc_params);
615 err = mlx5e_create_ttc_table(priv, &ttc_params, &hp->ttc);
616 if (err)
617 goto err_create_ttc_table;
618
619 netdev_dbg(priv->netdev, "add hairpin: using %d channels rss ttc table id %x\n",
620 hp->num_channels, hp->ttc.ft.t->id);
621
622 return 0;
623
624err_create_ttc_table:
625 mlx5e_hairpin_destroy_indirect_tirs(hp);
626err_create_indirect_tirs:
627 mlx5e_destroy_rqt(priv, &hp->indir_rqt);
628
629 return err;
630}
631
632static void mlx5e_hairpin_rss_cleanup(struct mlx5e_hairpin *hp)
633{
634 struct mlx5e_priv *priv = hp->func_priv;
635
636 mlx5e_destroy_ttc_table(priv, &hp->ttc);
637 mlx5e_hairpin_destroy_indirect_tirs(hp);
638 mlx5e_destroy_rqt(priv, &hp->indir_rqt);
639}
640
641static struct mlx5e_hairpin *
642mlx5e_hairpin_create(struct mlx5e_priv *priv, struct mlx5_hairpin_params *params,
643 int peer_ifindex)
644{
645 struct mlx5_core_dev *func_mdev, *peer_mdev;
646 struct mlx5e_hairpin *hp;
647 struct mlx5_hairpin *pair;
648 int err;
649
650 hp = kzalloc(sizeof(*hp), GFP_KERNEL);
651 if (!hp)
652 return ERR_PTR(-ENOMEM);
653
654 func_mdev = priv->mdev;
655 peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
656
657 pair = mlx5_core_hairpin_create(func_mdev, peer_mdev, params);
658 if (IS_ERR(pair)) {
659 err = PTR_ERR(pair);
660 goto create_pair_err;
661 }
662 hp->pair = pair;
663 hp->func_mdev = func_mdev;
664 hp->func_priv = priv;
665 hp->num_channels = params->num_channels;
666
667 err = mlx5e_hairpin_create_transport(hp);
668 if (err)
669 goto create_transport_err;
670
671 if (hp->num_channels > 1) {
672 err = mlx5e_hairpin_rss_init(hp);
673 if (err)
674 goto rss_init_err;
675 }
676
677 return hp;
678
679rss_init_err:
680 mlx5e_hairpin_destroy_transport(hp);
681create_transport_err:
682 mlx5_core_hairpin_destroy(hp->pair);
683create_pair_err:
684 kfree(hp);
685 return ERR_PTR(err);
686}
687
688static void mlx5e_hairpin_destroy(struct mlx5e_hairpin *hp)
689{
690 if (hp->num_channels > 1)
691 mlx5e_hairpin_rss_cleanup(hp);
692 mlx5e_hairpin_destroy_transport(hp);
693 mlx5_core_hairpin_destroy(hp->pair);
694 kvfree(hp);
695}
696
697static inline u32 hash_hairpin_info(u16 peer_vhca_id, u8 prio)
698{
699 return (peer_vhca_id << 16 | prio);
700}
701
702static struct mlx5e_hairpin_entry *mlx5e_hairpin_get(struct mlx5e_priv *priv,
703 u16 peer_vhca_id, u8 prio)
704{
705 struct mlx5e_hairpin_entry *hpe;
706 u32 hash_key = hash_hairpin_info(peer_vhca_id, prio);
707
708 hash_for_each_possible(priv->fs.tc.hairpin_tbl, hpe,
709 hairpin_hlist, hash_key) {
710 if (hpe->peer_vhca_id == peer_vhca_id && hpe->prio == prio) {
711 refcount_inc(&hpe->refcnt);
712 return hpe;
713 }
714 }
715
716 return NULL;
717}
718
719static void mlx5e_hairpin_put(struct mlx5e_priv *priv,
720 struct mlx5e_hairpin_entry *hpe)
721{
722 /* no more hairpin flows for us, release the hairpin pair */
723 if (!refcount_dec_and_mutex_lock(&hpe->refcnt, &priv->fs.tc.hairpin_tbl_lock))
724 return;
725 hash_del(&hpe->hairpin_hlist);
726 mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
727
728 if (!IS_ERR_OR_NULL(hpe->hp)) {
729 netdev_dbg(priv->netdev, "del hairpin: peer %s\n",
730 dev_name(hpe->hp->pair->peer_mdev->device));
731
732 mlx5e_hairpin_destroy(hpe->hp);
733 }
734
735 WARN_ON(!list_empty(&hpe->flows));
736 kfree(hpe);
737}
738
739#define UNKNOWN_MATCH_PRIO 8
740
741static int mlx5e_hairpin_get_prio(struct mlx5e_priv *priv,
742 struct mlx5_flow_spec *spec, u8 *match_prio,
743 struct netlink_ext_ack *extack)
744{
745 void *headers_c, *headers_v;
746 u8 prio_val, prio_mask = 0;
747 bool vlan_present;
748
749#ifdef CONFIG_MLX5_CORE_EN_DCB
750 if (priv->dcbx_dp.trust_state != MLX5_QPTS_TRUST_PCP) {
751 NL_SET_ERR_MSG_MOD(extack,
752 "only PCP trust state supported for hairpin");
753 return -EOPNOTSUPP;
754 }
755#endif
756 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers);
757 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
758
759 vlan_present = MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag);
760 if (vlan_present) {
761 prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio);
762 prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio);
763 }
764
765 if (!vlan_present || !prio_mask) {
766 prio_val = UNKNOWN_MATCH_PRIO;
767 } else if (prio_mask != 0x7) {
768 NL_SET_ERR_MSG_MOD(extack,
769 "masked priority match not supported for hairpin");
770 return -EOPNOTSUPP;
771 }
772
773 *match_prio = prio_val;
774 return 0;
775}
776
777static int mlx5e_hairpin_flow_add(struct mlx5e_priv *priv,
778 struct mlx5e_tc_flow *flow,
779 struct mlx5e_tc_flow_parse_attr *parse_attr,
780 struct netlink_ext_ack *extack)
781{
782 int peer_ifindex = parse_attr->mirred_ifindex[0];
783 struct mlx5_hairpin_params params;
784 struct mlx5_core_dev *peer_mdev;
785 struct mlx5e_hairpin_entry *hpe;
786 struct mlx5e_hairpin *hp;
787 u64 link_speed64;
788 u32 link_speed;
789 u8 match_prio;
790 u16 peer_id;
791 int err;
792
793 peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
794 if (!MLX5_CAP_GEN(priv->mdev, hairpin) || !MLX5_CAP_GEN(peer_mdev, hairpin)) {
795 NL_SET_ERR_MSG_MOD(extack, "hairpin is not supported");
796 return -EOPNOTSUPP;
797 }
798
799 peer_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
800 err = mlx5e_hairpin_get_prio(priv, &parse_attr->spec, &match_prio,
801 extack);
802 if (err)
803 return err;
804
805 mutex_lock(&priv->fs.tc.hairpin_tbl_lock);
806 hpe = mlx5e_hairpin_get(priv, peer_id, match_prio);
807 if (hpe) {
808 mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
809 wait_for_completion(&hpe->res_ready);
810
811 if (IS_ERR(hpe->hp)) {
812 err = -EREMOTEIO;
813 goto out_err;
814 }
815 goto attach_flow;
816 }
817
818 hpe = kzalloc(sizeof(*hpe), GFP_KERNEL);
819 if (!hpe) {
820 mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
821 return -ENOMEM;
822 }
823
824 spin_lock_init(&hpe->flows_lock);
825 INIT_LIST_HEAD(&hpe->flows);
826 INIT_LIST_HEAD(&hpe->dead_peer_wait_list);
827 hpe->peer_vhca_id = peer_id;
828 hpe->prio = match_prio;
829 refcount_set(&hpe->refcnt, 1);
830 init_completion(&hpe->res_ready);
831
832 hash_add(priv->fs.tc.hairpin_tbl, &hpe->hairpin_hlist,
833 hash_hairpin_info(peer_id, match_prio));
834 mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
835
836 params.log_data_size = 15;
837 params.log_data_size = min_t(u8, params.log_data_size,
838 MLX5_CAP_GEN(priv->mdev, log_max_hairpin_wq_data_sz));
839 params.log_data_size = max_t(u8, params.log_data_size,
840 MLX5_CAP_GEN(priv->mdev, log_min_hairpin_wq_data_sz));
841
842 params.log_num_packets = params.log_data_size -
843 MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(priv->mdev);
844 params.log_num_packets = min_t(u8, params.log_num_packets,
845 MLX5_CAP_GEN(priv->mdev, log_max_hairpin_num_packets));
846
847 params.q_counter = priv->q_counter;
848 /* set hairpin pair per each 50Gbs share of the link */
849 mlx5e_port_max_linkspeed(priv->mdev, &link_speed);
850 link_speed = max_t(u32, link_speed, 50000);
851 link_speed64 = link_speed;
852 do_div(link_speed64, 50000);
853 params.num_channels = link_speed64;
854
855 hp = mlx5e_hairpin_create(priv, &params, peer_ifindex);
856 hpe->hp = hp;
857 complete_all(&hpe->res_ready);
858 if (IS_ERR(hp)) {
859 err = PTR_ERR(hp);
860 goto out_err;
861 }
862
863 netdev_dbg(priv->netdev, "add hairpin: tirn %x rqn %x peer %s sqn %x prio %d (log) data %d packets %d\n",
864 hp->tirn, hp->pair->rqn[0],
865 dev_name(hp->pair->peer_mdev->device),
866 hp->pair->sqn[0], match_prio, params.log_data_size, params.log_num_packets);
867
868attach_flow:
869 if (hpe->hp->num_channels > 1) {
870 flow_flag_set(flow, HAIRPIN_RSS);
871 flow->nic_attr->hairpin_ft = hpe->hp->ttc.ft.t;
872 } else {
873 flow->nic_attr->hairpin_tirn = hpe->hp->tirn;
874 }
875
876 flow->hpe = hpe;
877 spin_lock(&hpe->flows_lock);
878 list_add(&flow->hairpin, &hpe->flows);
879 spin_unlock(&hpe->flows_lock);
880
881 return 0;
882
883out_err:
884 mlx5e_hairpin_put(priv, hpe);
885 return err;
886}
887
888static void mlx5e_hairpin_flow_del(struct mlx5e_priv *priv,
889 struct mlx5e_tc_flow *flow)
890{
891 /* flow wasn't fully initialized */
892 if (!flow->hpe)
893 return;
894
895 spin_lock(&flow->hpe->flows_lock);
896 list_del(&flow->hairpin);
897 spin_unlock(&flow->hpe->flows_lock);
898
899 mlx5e_hairpin_put(priv, flow->hpe);
900 flow->hpe = NULL;
901}
902
903static int
904mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
905 struct mlx5e_tc_flow_parse_attr *parse_attr,
906 struct mlx5e_tc_flow *flow,
907 struct netlink_ext_ack *extack)
908{
909 struct mlx5_flow_context *flow_context = &parse_attr->spec.flow_context;
910 struct mlx5_nic_flow_attr *attr = flow->nic_attr;
911 struct mlx5_core_dev *dev = priv->mdev;
912 struct mlx5_flow_destination dest[2] = {};
913 struct mlx5_flow_act flow_act = {
914 .action = attr->action,
915 .flags = FLOW_ACT_NO_APPEND,
916 };
917 struct mlx5_fc *counter = NULL;
918 int err, dest_ix = 0;
919
920 flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
921 flow_context->flow_tag = attr->flow_tag;
922
923 if (flow_flag_test(flow, HAIRPIN)) {
924 err = mlx5e_hairpin_flow_add(priv, flow, parse_attr, extack);
925 if (err)
926 return err;
927
928 if (flow_flag_test(flow, HAIRPIN_RSS)) {
929 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
930 dest[dest_ix].ft = attr->hairpin_ft;
931 } else {
932 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_TIR;
933 dest[dest_ix].tir_num = attr->hairpin_tirn;
934 }
935 dest_ix++;
936 } else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
937 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
938 dest[dest_ix].ft = priv->fs.vlan.ft.t;
939 dest_ix++;
940 }
941
942 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
943 counter = mlx5_fc_create(dev, true);
944 if (IS_ERR(counter))
945 return PTR_ERR(counter);
946
947 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
948 dest[dest_ix].counter_id = mlx5_fc_id(counter);
949 dest_ix++;
950 attr->counter = counter;
951 }
952
953 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
954 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
955 flow_act.modify_hdr = attr->modify_hdr;
956 kfree(parse_attr->mod_hdr_actions);
957 if (err)
958 return err;
959 }
960
961 mutex_lock(&priv->fs.tc.t_lock);
962 if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
963 int tc_grp_size, tc_tbl_size;
964 u32 max_flow_counter;
965
966 max_flow_counter = (MLX5_CAP_GEN(dev, max_flow_counter_31_16) << 16) |
967 MLX5_CAP_GEN(dev, max_flow_counter_15_0);
968
969 tc_grp_size = min_t(int, max_flow_counter, MLX5E_TC_TABLE_MAX_GROUP_SIZE);
970
971 tc_tbl_size = min_t(int, tc_grp_size * MLX5E_TC_TABLE_NUM_GROUPS,
972 BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev, log_max_ft_size)));
973
974 priv->fs.tc.t =
975 mlx5_create_auto_grouped_flow_table(priv->fs.ns,
976 MLX5E_TC_PRIO,
977 tc_tbl_size,
978 MLX5E_TC_TABLE_NUM_GROUPS,
979 MLX5E_TC_FT_LEVEL, 0);
980 if (IS_ERR(priv->fs.tc.t)) {
981 mutex_unlock(&priv->fs.tc.t_lock);
982 NL_SET_ERR_MSG_MOD(extack,
983 "Failed to create tc offload table\n");
984 netdev_err(priv->netdev,
985 "Failed to create tc offload table\n");
986 return PTR_ERR(priv->fs.tc.t);
987 }
988 }
989
990 if (attr->match_level != MLX5_MATCH_NONE)
991 parse_attr->spec.match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS;
992
993 flow->rule[0] = mlx5_add_flow_rules(priv->fs.tc.t, &parse_attr->spec,
994 &flow_act, dest, dest_ix);
995 mutex_unlock(&priv->fs.tc.t_lock);
996
997 return PTR_ERR_OR_ZERO(flow->rule[0]);
998}
999
1000static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
1001 struct mlx5e_tc_flow *flow)
1002{
1003 struct mlx5_nic_flow_attr *attr = flow->nic_attr;
1004 struct mlx5_fc *counter = NULL;
1005
1006 counter = attr->counter;
1007 if (!IS_ERR_OR_NULL(flow->rule[0]))
1008 mlx5_del_flow_rules(flow->rule[0]);
1009 mlx5_fc_destroy(priv->mdev, counter);
1010
1011 mutex_lock(&priv->fs.tc.t_lock);
1012 if (!mlx5e_tc_num_filters(priv, MLX5_TC_FLAG(NIC_OFFLOAD)) && priv->fs.tc.t) {
1013 mlx5_destroy_flow_table(priv->fs.tc.t);
1014 priv->fs.tc.t = NULL;
1015 }
1016 mutex_unlock(&priv->fs.tc.t_lock);
1017
1018 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
1019 mlx5e_detach_mod_hdr(priv, flow);
1020
1021 if (flow_flag_test(flow, HAIRPIN))
1022 mlx5e_hairpin_flow_del(priv, flow);
1023}
1024
1025static void mlx5e_detach_encap(struct mlx5e_priv *priv,
1026 struct mlx5e_tc_flow *flow, int out_index);
1027
1028static int mlx5e_attach_encap(struct mlx5e_priv *priv,
1029 struct mlx5e_tc_flow *flow,
1030 struct net_device *mirred_dev,
1031 int out_index,
1032 struct netlink_ext_ack *extack,
1033 struct net_device **encap_dev,
1034 bool *encap_valid);
1035
1036static struct mlx5_flow_handle *
1037mlx5e_tc_offload_fdb_rules(struct mlx5_eswitch *esw,
1038 struct mlx5e_tc_flow *flow,
1039 struct mlx5_flow_spec *spec,
1040 struct mlx5_esw_flow_attr *attr)
1041{
1042 struct mlx5_flow_handle *rule;
1043
1044 rule = mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
1045 if (IS_ERR(rule))
1046 return rule;
1047
1048 if (attr->split_count) {
1049 flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, spec, attr);
1050 if (IS_ERR(flow->rule[1])) {
1051 mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
1052 return flow->rule[1];
1053 }
1054 }
1055
1056 return rule;
1057}
1058
1059static void
1060mlx5e_tc_unoffload_fdb_rules(struct mlx5_eswitch *esw,
1061 struct mlx5e_tc_flow *flow,
1062 struct mlx5_esw_flow_attr *attr)
1063{
1064 flow_flag_clear(flow, OFFLOADED);
1065
1066 if (attr->split_count)
1067 mlx5_eswitch_del_fwd_rule(esw, flow->rule[1], attr);
1068
1069 mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
1070}
1071
1072static struct mlx5_flow_handle *
1073mlx5e_tc_offload_to_slow_path(struct mlx5_eswitch *esw,
1074 struct mlx5e_tc_flow *flow,
1075 struct mlx5_flow_spec *spec,
1076 struct mlx5_esw_flow_attr *slow_attr)
1077{
1078 struct mlx5_flow_handle *rule;
1079
1080 memcpy(slow_attr, flow->esw_attr, sizeof(*slow_attr));
1081 slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1082 slow_attr->split_count = 0;
1083 slow_attr->dest_chain = FDB_TC_SLOW_PATH_CHAIN;
1084
1085 rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, slow_attr);
1086 if (!IS_ERR(rule))
1087 flow_flag_set(flow, SLOW);
1088
1089 return rule;
1090}
1091
1092static void
1093mlx5e_tc_unoffload_from_slow_path(struct mlx5_eswitch *esw,
1094 struct mlx5e_tc_flow *flow,
1095 struct mlx5_esw_flow_attr *slow_attr)
1096{
1097 memcpy(slow_attr, flow->esw_attr, sizeof(*slow_attr));
1098 slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1099 slow_attr->split_count = 0;
1100 slow_attr->dest_chain = FDB_TC_SLOW_PATH_CHAIN;
1101 mlx5e_tc_unoffload_fdb_rules(esw, flow, slow_attr);
1102 flow_flag_clear(flow, SLOW);
1103}
1104
1105/* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this
1106 * function.
1107 */
1108static void unready_flow_add(struct mlx5e_tc_flow *flow,
1109 struct list_head *unready_flows)
1110{
1111 flow_flag_set(flow, NOT_READY);
1112 list_add_tail(&flow->unready, unready_flows);
1113}
1114
1115/* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this
1116 * function.
1117 */
1118static void unready_flow_del(struct mlx5e_tc_flow *flow)
1119{
1120 list_del(&flow->unready);
1121 flow_flag_clear(flow, NOT_READY);
1122}
1123
1124static void add_unready_flow(struct mlx5e_tc_flow *flow)
1125{
1126 struct mlx5_rep_uplink_priv *uplink_priv;
1127 struct mlx5e_rep_priv *rpriv;
1128 struct mlx5_eswitch *esw;
1129
1130 esw = flow->priv->mdev->priv.eswitch;
1131 rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
1132 uplink_priv = &rpriv->uplink_priv;
1133
1134 mutex_lock(&uplink_priv->unready_flows_lock);
1135 unready_flow_add(flow, &uplink_priv->unready_flows);
1136 mutex_unlock(&uplink_priv->unready_flows_lock);
1137}
1138
1139static void remove_unready_flow(struct mlx5e_tc_flow *flow)
1140{
1141 struct mlx5_rep_uplink_priv *uplink_priv;
1142 struct mlx5e_rep_priv *rpriv;
1143 struct mlx5_eswitch *esw;
1144
1145 esw = flow->priv->mdev->priv.eswitch;
1146 rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
1147 uplink_priv = &rpriv->uplink_priv;
1148
1149 mutex_lock(&uplink_priv->unready_flows_lock);
1150 unready_flow_del(flow);
1151 mutex_unlock(&uplink_priv->unready_flows_lock);
1152}
1153
1154static int
1155mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
1156 struct mlx5e_tc_flow *flow,
1157 struct netlink_ext_ack *extack)
1158{
1159 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1160 u32 max_chain = mlx5_eswitch_get_chain_range(esw);
1161 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1162 struct mlx5e_tc_flow_parse_attr *parse_attr = attr->parse_attr;
1163 u16 max_prio = mlx5_eswitch_get_prio_range(esw);
1164 struct net_device *out_dev, *encap_dev = NULL;
1165 struct mlx5_fc *counter = NULL;
1166 struct mlx5e_rep_priv *rpriv;
1167 struct mlx5e_priv *out_priv;
1168 bool encap_valid = true;
1169 int err = 0;
1170 int out_index;
1171
1172 if (!mlx5_eswitch_prios_supported(esw) && attr->prio != 1) {
1173 NL_SET_ERR_MSG(extack, "E-switch priorities unsupported, upgrade FW");
1174 return -EOPNOTSUPP;
1175 }
1176
1177 /* We check chain range only for tc flows.
1178 * For ft flows, we checked attr->chain was originally 0 and set it to
1179 * FDB_FT_CHAIN which is outside tc range.
1180 * See mlx5e_rep_setup_ft_cb().
1181 */
1182 if (!mlx5e_is_ft_flow(flow) && attr->chain > max_chain) {
1183 NL_SET_ERR_MSG(extack, "Requested chain is out of supported range");
1184 return -EOPNOTSUPP;
1185 }
1186
1187 if (attr->prio > max_prio) {
1188 NL_SET_ERR_MSG(extack, "Requested priority is out of supported range");
1189 return -EOPNOTSUPP;
1190 }
1191
1192 for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) {
1193 int mirred_ifindex;
1194
1195 if (!(attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP))
1196 continue;
1197
1198 mirred_ifindex = parse_attr->mirred_ifindex[out_index];
1199 out_dev = __dev_get_by_index(dev_net(priv->netdev),
1200 mirred_ifindex);
1201 err = mlx5e_attach_encap(priv, flow, out_dev, out_index,
1202 extack, &encap_dev, &encap_valid);
1203 if (err)
1204 return err;
1205
1206 out_priv = netdev_priv(encap_dev);
1207 rpriv = out_priv->ppriv;
1208 attr->dests[out_index].rep = rpriv->rep;
1209 attr->dests[out_index].mdev = out_priv->mdev;
1210 }
1211
1212 err = mlx5_eswitch_add_vlan_action(esw, attr);
1213 if (err)
1214 return err;
1215
1216 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
1217 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
1218 kfree(parse_attr->mod_hdr_actions);
1219 if (err)
1220 return err;
1221 }
1222
1223 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
1224 counter = mlx5_fc_create(attr->counter_dev, true);
1225 if (IS_ERR(counter))
1226 return PTR_ERR(counter);
1227
1228 attr->counter = counter;
1229 }
1230
1231 /* we get here if one of the following takes place:
1232 * (1) there's no error
1233 * (2) there's an encap action and we don't have valid neigh
1234 */
1235 if (!encap_valid) {
1236 /* continue with goto slow path rule instead */
1237 struct mlx5_esw_flow_attr slow_attr;
1238
1239 flow->rule[0] = mlx5e_tc_offload_to_slow_path(esw, flow, &parse_attr->spec, &slow_attr);
1240 } else {
1241 flow->rule[0] = mlx5e_tc_offload_fdb_rules(esw, flow, &parse_attr->spec, attr);
1242 }
1243
1244 if (IS_ERR(flow->rule[0]))
1245 return PTR_ERR(flow->rule[0]);
1246 else
1247 flow_flag_set(flow, OFFLOADED);
1248
1249 return 0;
1250}
1251
1252static bool mlx5_flow_has_geneve_opt(struct mlx5e_tc_flow *flow)
1253{
1254 struct mlx5_flow_spec *spec = &flow->esw_attr->parse_attr->spec;
1255 void *headers_v = MLX5_ADDR_OF(fte_match_param,
1256 spec->match_value,
1257 misc_parameters_3);
1258 u32 geneve_tlv_opt_0_data = MLX5_GET(fte_match_set_misc3,
1259 headers_v,
1260 geneve_tlv_option_0_data);
1261
1262 return !!geneve_tlv_opt_0_data;
1263}
1264
1265static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
1266 struct mlx5e_tc_flow *flow)
1267{
1268 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1269 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1270 struct mlx5_esw_flow_attr slow_attr;
1271 int out_index;
1272
1273 if (flow_flag_test(flow, NOT_READY)) {
1274 remove_unready_flow(flow);
1275 kvfree(attr->parse_attr);
1276 return;
1277 }
1278
1279 if (mlx5e_is_offloaded_flow(flow)) {
1280 if (flow_flag_test(flow, SLOW))
1281 mlx5e_tc_unoffload_from_slow_path(esw, flow, &slow_attr);
1282 else
1283 mlx5e_tc_unoffload_fdb_rules(esw, flow, attr);
1284 }
1285
1286 if (mlx5_flow_has_geneve_opt(flow))
1287 mlx5_geneve_tlv_option_del(priv->mdev->geneve);
1288
1289 mlx5_eswitch_del_vlan_action(esw, attr);
1290
1291 for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++)
1292 if (attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP) {
1293 mlx5e_detach_encap(priv, flow, out_index);
1294 kfree(attr->parse_attr->tun_info[out_index]);
1295 }
1296 kvfree(attr->parse_attr);
1297
1298 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
1299 mlx5e_detach_mod_hdr(priv, flow);
1300
1301 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
1302 mlx5_fc_destroy(attr->counter_dev, attr->counter);
1303}
1304
1305void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv,
1306 struct mlx5e_encap_entry *e,
1307 struct list_head *flow_list)
1308{
1309 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1310 struct mlx5_esw_flow_attr slow_attr, *esw_attr;
1311 struct mlx5_flow_handle *rule;
1312 struct mlx5_flow_spec *spec;
1313 struct mlx5e_tc_flow *flow;
1314 int err;
1315
1316 e->pkt_reformat = mlx5_packet_reformat_alloc(priv->mdev,
1317 e->reformat_type,
1318 e->encap_size, e->encap_header,
1319 MLX5_FLOW_NAMESPACE_FDB);
1320 if (IS_ERR(e->pkt_reformat)) {
1321 mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %lu\n",
1322 PTR_ERR(e->pkt_reformat));
1323 return;
1324 }
1325 e->flags |= MLX5_ENCAP_ENTRY_VALID;
1326 mlx5e_rep_queue_neigh_stats_work(priv);
1327
1328 list_for_each_entry(flow, flow_list, tmp_list) {
1329 bool all_flow_encaps_valid = true;
1330 int i;
1331
1332 if (!mlx5e_is_offloaded_flow(flow))
1333 continue;
1334 esw_attr = flow->esw_attr;
1335 spec = &esw_attr->parse_attr->spec;
1336
1337 esw_attr->dests[flow->tmp_efi_index].pkt_reformat = e->pkt_reformat;
1338 esw_attr->dests[flow->tmp_efi_index].flags |= MLX5_ESW_DEST_ENCAP_VALID;
1339 /* Flow can be associated with multiple encap entries.
1340 * Before offloading the flow verify that all of them have
1341 * a valid neighbour.
1342 */
1343 for (i = 0; i < MLX5_MAX_FLOW_FWD_VPORTS; i++) {
1344 if (!(esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP))
1345 continue;
1346 if (!(esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP_VALID)) {
1347 all_flow_encaps_valid = false;
1348 break;
1349 }
1350 }
1351 /* Do not offload flows with unresolved neighbors */
1352 if (!all_flow_encaps_valid)
1353 continue;
1354 /* update from slow path rule to encap rule */
1355 rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, esw_attr);
1356 if (IS_ERR(rule)) {
1357 err = PTR_ERR(rule);
1358 mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n",
1359 err);
1360 continue;
1361 }
1362
1363 mlx5e_tc_unoffload_from_slow_path(esw, flow, &slow_attr);
1364 flow->rule[0] = rule;
1365 /* was unset when slow path rule removed */
1366 flow_flag_set(flow, OFFLOADED);
1367 }
1368}
1369
1370void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv,
1371 struct mlx5e_encap_entry *e,
1372 struct list_head *flow_list)
1373{
1374 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1375 struct mlx5_esw_flow_attr slow_attr;
1376 struct mlx5_flow_handle *rule;
1377 struct mlx5_flow_spec *spec;
1378 struct mlx5e_tc_flow *flow;
1379 int err;
1380
1381 list_for_each_entry(flow, flow_list, tmp_list) {
1382 if (!mlx5e_is_offloaded_flow(flow))
1383 continue;
1384 spec = &flow->esw_attr->parse_attr->spec;
1385
1386 /* update from encap rule to slow path rule */
1387 rule = mlx5e_tc_offload_to_slow_path(esw, flow, spec, &slow_attr);
1388 /* mark the flow's encap dest as non-valid */
1389 flow->esw_attr->dests[flow->tmp_efi_index].flags &= ~MLX5_ESW_DEST_ENCAP_VALID;
1390
1391 if (IS_ERR(rule)) {
1392 err = PTR_ERR(rule);
1393 mlx5_core_warn(priv->mdev, "Failed to update slow path (encap) flow, %d\n",
1394 err);
1395 continue;
1396 }
1397
1398 mlx5e_tc_unoffload_fdb_rules(esw, flow, flow->esw_attr);
1399 flow->rule[0] = rule;
1400 /* was unset when fast path rule removed */
1401 flow_flag_set(flow, OFFLOADED);
1402 }
1403
1404 /* we know that the encap is valid */
1405 e->flags &= ~MLX5_ENCAP_ENTRY_VALID;
1406 mlx5_packet_reformat_dealloc(priv->mdev, e->pkt_reformat);
1407}
1408
1409static struct mlx5_fc *mlx5e_tc_get_counter(struct mlx5e_tc_flow *flow)
1410{
1411 if (mlx5e_is_eswitch_flow(flow))
1412 return flow->esw_attr->counter;
1413 else
1414 return flow->nic_attr->counter;
1415}
1416
1417/* Takes reference to all flows attached to encap and adds the flows to
1418 * flow_list using 'tmp_list' list_head in mlx5e_tc_flow.
1419 */
1420void mlx5e_take_all_encap_flows(struct mlx5e_encap_entry *e, struct list_head *flow_list)
1421{
1422 struct encap_flow_item *efi;
1423 struct mlx5e_tc_flow *flow;
1424
1425 list_for_each_entry(efi, &e->flows, list) {
1426 flow = container_of(efi, struct mlx5e_tc_flow, encaps[efi->index]);
1427 if (IS_ERR(mlx5e_flow_get(flow)))
1428 continue;
1429 wait_for_completion(&flow->init_done);
1430
1431 flow->tmp_efi_index = efi->index;
1432 list_add(&flow->tmp_list, flow_list);
1433 }
1434}
1435
1436/* Iterate over tmp_list of flows attached to flow_list head. */
1437void mlx5e_put_encap_flow_list(struct mlx5e_priv *priv, struct list_head *flow_list)
1438{
1439 struct mlx5e_tc_flow *flow, *tmp;
1440
1441 list_for_each_entry_safe(flow, tmp, flow_list, tmp_list)
1442 mlx5e_flow_put(priv, flow);
1443}
1444
1445static struct mlx5e_encap_entry *
1446mlx5e_get_next_valid_encap(struct mlx5e_neigh_hash_entry *nhe,
1447 struct mlx5e_encap_entry *e)
1448{
1449 struct mlx5e_encap_entry *next = NULL;
1450
1451retry:
1452 rcu_read_lock();
1453
1454 /* find encap with non-zero reference counter value */
1455 for (next = e ?
1456 list_next_or_null_rcu(&nhe->encap_list,
1457 &e->encap_list,
1458 struct mlx5e_encap_entry,
1459 encap_list) :
1460 list_first_or_null_rcu(&nhe->encap_list,
1461 struct mlx5e_encap_entry,
1462 encap_list);
1463 next;
1464 next = list_next_or_null_rcu(&nhe->encap_list,
1465 &next->encap_list,
1466 struct mlx5e_encap_entry,
1467 encap_list))
1468 if (mlx5e_encap_take(next))
1469 break;
1470
1471 rcu_read_unlock();
1472
1473 /* release starting encap */
1474 if (e)
1475 mlx5e_encap_put(netdev_priv(e->out_dev), e);
1476 if (!next)
1477 return next;
1478
1479 /* wait for encap to be fully initialized */
1480 wait_for_completion(&next->res_ready);
1481 /* continue searching if encap entry is not in valid state after completion */
1482 if (!(next->flags & MLX5_ENCAP_ENTRY_VALID)) {
1483 e = next;
1484 goto retry;
1485 }
1486
1487 return next;
1488}
1489
1490void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
1491{
1492 struct mlx5e_neigh *m_neigh = &nhe->m_neigh;
1493 struct mlx5e_encap_entry *e = NULL;
1494 struct mlx5e_tc_flow *flow;
1495 struct mlx5_fc *counter;
1496 struct neigh_table *tbl;
1497 bool neigh_used = false;
1498 struct neighbour *n;
1499 u64 lastuse;
1500
1501 if (m_neigh->family == AF_INET)
1502 tbl = &arp_tbl;
1503#if IS_ENABLED(CONFIG_IPV6)
1504 else if (m_neigh->family == AF_INET6)
1505 tbl = ipv6_stub->nd_tbl;
1506#endif
1507 else
1508 return;
1509
1510 /* mlx5e_get_next_valid_encap() releases previous encap before returning
1511 * next one.
1512 */
1513 while ((e = mlx5e_get_next_valid_encap(nhe, e)) != NULL) {
1514 struct mlx5e_priv *priv = netdev_priv(e->out_dev);
1515 struct encap_flow_item *efi, *tmp;
1516 struct mlx5_eswitch *esw;
1517 LIST_HEAD(flow_list);
1518
1519 esw = priv->mdev->priv.eswitch;
1520 mutex_lock(&esw->offloads.encap_tbl_lock);
1521 list_for_each_entry_safe(efi, tmp, &e->flows, list) {
1522 flow = container_of(efi, struct mlx5e_tc_flow,
1523 encaps[efi->index]);
1524 if (IS_ERR(mlx5e_flow_get(flow)))
1525 continue;
1526 list_add(&flow->tmp_list, &flow_list);
1527
1528 if (mlx5e_is_offloaded_flow(flow)) {
1529 counter = mlx5e_tc_get_counter(flow);
1530 lastuse = mlx5_fc_query_lastuse(counter);
1531 if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) {
1532 neigh_used = true;
1533 break;
1534 }
1535 }
1536 }
1537 mutex_unlock(&esw->offloads.encap_tbl_lock);
1538
1539 mlx5e_put_encap_flow_list(priv, &flow_list);
1540 if (neigh_used) {
1541 /* release current encap before breaking the loop */
1542 mlx5e_encap_put(priv, e);
1543 break;
1544 }
1545 }
1546
1547 trace_mlx5e_tc_update_neigh_used_value(nhe, neigh_used);
1548
1549 if (neigh_used) {
1550 nhe->reported_lastuse = jiffies;
1551
1552 /* find the relevant neigh according to the cached device and
1553 * dst ip pair
1554 */
1555 n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev);
1556 if (!n)
1557 return;
1558
1559 neigh_event_send(n, NULL);
1560 neigh_release(n);
1561 }
1562}
1563
1564static void mlx5e_encap_dealloc(struct mlx5e_priv *priv, struct mlx5e_encap_entry *e)
1565{
1566 WARN_ON(!list_empty(&e->flows));
1567
1568 if (e->compl_result > 0) {
1569 mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1570
1571 if (e->flags & MLX5_ENCAP_ENTRY_VALID)
1572 mlx5_packet_reformat_dealloc(priv->mdev, e->pkt_reformat);
1573 }
1574
1575 kfree(e->tun_info);
1576 kfree(e->encap_header);
1577 kfree_rcu(e, rcu);
1578}
1579
1580void mlx5e_encap_put(struct mlx5e_priv *priv, struct mlx5e_encap_entry *e)
1581{
1582 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1583
1584 if (!refcount_dec_and_mutex_lock(&e->refcnt, &esw->offloads.encap_tbl_lock))
1585 return;
1586 hash_del_rcu(&e->encap_hlist);
1587 mutex_unlock(&esw->offloads.encap_tbl_lock);
1588
1589 mlx5e_encap_dealloc(priv, e);
1590}
1591
1592static void mlx5e_detach_encap(struct mlx5e_priv *priv,
1593 struct mlx5e_tc_flow *flow, int out_index)
1594{
1595 struct mlx5e_encap_entry *e = flow->encaps[out_index].e;
1596 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1597
1598 /* flow wasn't fully initialized */
1599 if (!e)
1600 return;
1601
1602 mutex_lock(&esw->offloads.encap_tbl_lock);
1603 list_del(&flow->encaps[out_index].list);
1604 flow->encaps[out_index].e = NULL;
1605 if (!refcount_dec_and_test(&e->refcnt)) {
1606 mutex_unlock(&esw->offloads.encap_tbl_lock);
1607 return;
1608 }
1609 hash_del_rcu(&e->encap_hlist);
1610 mutex_unlock(&esw->offloads.encap_tbl_lock);
1611
1612 mlx5e_encap_dealloc(priv, e);
1613}
1614
1615static void __mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow)
1616{
1617 struct mlx5_eswitch *esw = flow->priv->mdev->priv.eswitch;
1618
1619 if (!flow_flag_test(flow, ESWITCH) ||
1620 !flow_flag_test(flow, DUP))
1621 return;
1622
1623 mutex_lock(&esw->offloads.peer_mutex);
1624 list_del(&flow->peer);
1625 mutex_unlock(&esw->offloads.peer_mutex);
1626
1627 flow_flag_clear(flow, DUP);
1628
1629 if (refcount_dec_and_test(&flow->peer_flow->refcnt)) {
1630 mlx5e_tc_del_fdb_flow(flow->peer_flow->priv, flow->peer_flow);
1631 kfree(flow->peer_flow);
1632 }
1633
1634 flow->peer_flow = NULL;
1635}
1636
1637static void mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow)
1638{
1639 struct mlx5_core_dev *dev = flow->priv->mdev;
1640 struct mlx5_devcom *devcom = dev->priv.devcom;
1641 struct mlx5_eswitch *peer_esw;
1642
1643 peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
1644 if (!peer_esw)
1645 return;
1646
1647 __mlx5e_tc_del_fdb_peer_flow(flow);
1648 mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
1649}
1650
1651static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
1652 struct mlx5e_tc_flow *flow)
1653{
1654 if (mlx5e_is_eswitch_flow(flow)) {
1655 mlx5e_tc_del_fdb_peer_flow(flow);
1656 mlx5e_tc_del_fdb_flow(priv, flow);
1657 } else {
1658 mlx5e_tc_del_nic_flow(priv, flow);
1659 }
1660}
1661
1662
1663static int parse_tunnel_attr(struct mlx5e_priv *priv,
1664 struct mlx5_flow_spec *spec,
1665 struct flow_cls_offload *f,
1666 struct net_device *filter_dev, u8 *match_level)
1667{
1668 struct netlink_ext_ack *extack = f->common.extack;
1669 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1670 outer_headers);
1671 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1672 outer_headers);
1673 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
1674 int err;
1675
1676 err = mlx5e_tc_tun_parse(filter_dev, priv, spec, f,
1677 headers_c, headers_v, match_level);
1678 if (err) {
1679 NL_SET_ERR_MSG_MOD(extack,
1680 "failed to parse tunnel attributes");
1681 return err;
1682 }
1683
1684 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
1685 struct flow_match_control match;
1686 u16 addr_type;
1687
1688 flow_rule_match_enc_control(rule, &match);
1689 addr_type = match.key->addr_type;
1690
1691 /* For tunnel addr_type used same key id`s as for non-tunnel */
1692 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1693 struct flow_match_ipv4_addrs match;
1694
1695 flow_rule_match_enc_ipv4_addrs(rule, &match);
1696 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1697 src_ipv4_src_ipv6.ipv4_layout.ipv4,
1698 ntohl(match.mask->src));
1699 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1700 src_ipv4_src_ipv6.ipv4_layout.ipv4,
1701 ntohl(match.key->src));
1702
1703 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1704 dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
1705 ntohl(match.mask->dst));
1706 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1707 dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
1708 ntohl(match.key->dst));
1709
1710 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c,
1711 ethertype);
1712 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
1713 ETH_P_IP);
1714 } else if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1715 struct flow_match_ipv6_addrs match;
1716
1717 flow_rule_match_enc_ipv6_addrs(rule, &match);
1718 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1719 src_ipv4_src_ipv6.ipv6_layout.ipv6),
1720 &match.mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout,
1721 ipv6));
1722 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1723 src_ipv4_src_ipv6.ipv6_layout.ipv6),
1724 &match.key->src, MLX5_FLD_SZ_BYTES(ipv6_layout,
1725 ipv6));
1726
1727 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1728 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1729 &match.mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout,
1730 ipv6));
1731 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1732 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1733 &match.key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout,
1734 ipv6));
1735
1736 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c,
1737 ethertype);
1738 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
1739 ETH_P_IPV6);
1740 }
1741 }
1742
1743 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) {
1744 struct flow_match_ip match;
1745
1746 flow_rule_match_enc_ip(rule, &match);
1747 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn,
1748 match.mask->tos & 0x3);
1749 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn,
1750 match.key->tos & 0x3);
1751
1752 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp,
1753 match.mask->tos >> 2);
1754 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp,
1755 match.key->tos >> 2);
1756
1757 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit,
1758 match.mask->ttl);
1759 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit,
1760 match.key->ttl);
1761
1762 if (match.mask->ttl &&
1763 !MLX5_CAP_ESW_FLOWTABLE_FDB
1764 (priv->mdev,
1765 ft_field_support.outer_ipv4_ttl)) {
1766 NL_SET_ERR_MSG_MOD(extack,
1767 "Matching on TTL is not supported");
1768 return -EOPNOTSUPP;
1769 }
1770
1771 }
1772
1773 /* Enforce DMAC when offloading incoming tunneled flows.
1774 * Flow counters require a match on the DMAC.
1775 */
1776 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
1777 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
1778 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1779 dmac_47_16), priv->netdev->dev_addr);
1780
1781 /* let software handle IP fragments */
1782 MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
1783 MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
1784
1785 return 0;
1786}
1787
1788static void *get_match_headers_criteria(u32 flags,
1789 struct mlx5_flow_spec *spec)
1790{
1791 return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
1792 MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1793 inner_headers) :
1794 MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1795 outer_headers);
1796}
1797
1798static void *get_match_headers_value(u32 flags,
1799 struct mlx5_flow_spec *spec)
1800{
1801 return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
1802 MLX5_ADDR_OF(fte_match_param, spec->match_value,
1803 inner_headers) :
1804 MLX5_ADDR_OF(fte_match_param, spec->match_value,
1805 outer_headers);
1806}
1807
1808static int __parse_cls_flower(struct mlx5e_priv *priv,
1809 struct mlx5_flow_spec *spec,
1810 struct flow_cls_offload *f,
1811 struct net_device *filter_dev,
1812 u8 *inner_match_level, u8 *outer_match_level)
1813{
1814 struct netlink_ext_ack *extack = f->common.extack;
1815 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1816 outer_headers);
1817 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1818 outer_headers);
1819 void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1820 misc_parameters);
1821 void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1822 misc_parameters);
1823 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
1824 struct flow_dissector *dissector = rule->match.dissector;
1825 u16 addr_type = 0;
1826 u8 ip_proto = 0;
1827 u8 *match_level;
1828
1829 match_level = outer_match_level;
1830
1831 if (dissector->used_keys &
1832 ~(BIT(FLOW_DISSECTOR_KEY_META) |
1833 BIT(FLOW_DISSECTOR_KEY_CONTROL) |
1834 BIT(FLOW_DISSECTOR_KEY_BASIC) |
1835 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
1836 BIT(FLOW_DISSECTOR_KEY_VLAN) |
1837 BIT(FLOW_DISSECTOR_KEY_CVLAN) |
1838 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
1839 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
1840 BIT(FLOW_DISSECTOR_KEY_PORTS) |
1841 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
1842 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
1843 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
1844 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
1845 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
1846 BIT(FLOW_DISSECTOR_KEY_TCP) |
1847 BIT(FLOW_DISSECTOR_KEY_IP) |
1848 BIT(FLOW_DISSECTOR_KEY_ENC_IP) |
1849 BIT(FLOW_DISSECTOR_KEY_ENC_OPTS))) {
1850 NL_SET_ERR_MSG_MOD(extack, "Unsupported key");
1851 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
1852 dissector->used_keys);
1853 return -EOPNOTSUPP;
1854 }
1855
1856 if (mlx5e_get_tc_tun(filter_dev)) {
1857 if (parse_tunnel_attr(priv, spec, f, filter_dev,
1858 outer_match_level))
1859 return -EOPNOTSUPP;
1860
1861 /* At this point, header pointers should point to the inner
1862 * headers, outer header were already set by parse_tunnel_attr
1863 */
1864 match_level = inner_match_level;
1865 headers_c = get_match_headers_criteria(MLX5_FLOW_CONTEXT_ACTION_DECAP,
1866 spec);
1867 headers_v = get_match_headers_value(MLX5_FLOW_CONTEXT_ACTION_DECAP,
1868 spec);
1869 }
1870
1871 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
1872 struct flow_match_basic match;
1873
1874 flow_rule_match_basic(rule, &match);
1875 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
1876 ntohs(match.mask->n_proto));
1877 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
1878 ntohs(match.key->n_proto));
1879
1880 if (match.mask->n_proto)
1881 *match_level = MLX5_MATCH_L2;
1882 }
1883 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) ||
1884 is_vlan_dev(filter_dev)) {
1885 struct flow_dissector_key_vlan filter_dev_mask;
1886 struct flow_dissector_key_vlan filter_dev_key;
1887 struct flow_match_vlan match;
1888
1889 if (is_vlan_dev(filter_dev)) {
1890 match.key = &filter_dev_key;
1891 match.key->vlan_id = vlan_dev_vlan_id(filter_dev);
1892 match.key->vlan_tpid = vlan_dev_vlan_proto(filter_dev);
1893 match.key->vlan_priority = 0;
1894 match.mask = &filter_dev_mask;
1895 memset(match.mask, 0xff, sizeof(*match.mask));
1896 match.mask->vlan_priority = 0;
1897 } else {
1898 flow_rule_match_vlan(rule, &match);
1899 }
1900 if (match.mask->vlan_id ||
1901 match.mask->vlan_priority ||
1902 match.mask->vlan_tpid) {
1903 if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
1904 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1905 svlan_tag, 1);
1906 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1907 svlan_tag, 1);
1908 } else {
1909 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1910 cvlan_tag, 1);
1911 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1912 cvlan_tag, 1);
1913 }
1914
1915 MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid,
1916 match.mask->vlan_id);
1917 MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid,
1918 match.key->vlan_id);
1919
1920 MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio,
1921 match.mask->vlan_priority);
1922 MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio,
1923 match.key->vlan_priority);
1924
1925 *match_level = MLX5_MATCH_L2;
1926 }
1927 } else if (*match_level != MLX5_MATCH_NONE) {
1928 /* cvlan_tag enabled in match criteria and
1929 * disabled in match value means both S & C tags
1930 * don't exist (untagged of both)
1931 */
1932 MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
1933 *match_level = MLX5_MATCH_L2;
1934 }
1935
1936 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
1937 struct flow_match_vlan match;
1938
1939 flow_rule_match_cvlan(rule, &match);
1940 if (match.mask->vlan_id ||
1941 match.mask->vlan_priority ||
1942 match.mask->vlan_tpid) {
1943 if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
1944 MLX5_SET(fte_match_set_misc, misc_c,
1945 outer_second_svlan_tag, 1);
1946 MLX5_SET(fte_match_set_misc, misc_v,
1947 outer_second_svlan_tag, 1);
1948 } else {
1949 MLX5_SET(fte_match_set_misc, misc_c,
1950 outer_second_cvlan_tag, 1);
1951 MLX5_SET(fte_match_set_misc, misc_v,
1952 outer_second_cvlan_tag, 1);
1953 }
1954
1955 MLX5_SET(fte_match_set_misc, misc_c, outer_second_vid,
1956 match.mask->vlan_id);
1957 MLX5_SET(fte_match_set_misc, misc_v, outer_second_vid,
1958 match.key->vlan_id);
1959 MLX5_SET(fte_match_set_misc, misc_c, outer_second_prio,
1960 match.mask->vlan_priority);
1961 MLX5_SET(fte_match_set_misc, misc_v, outer_second_prio,
1962 match.key->vlan_priority);
1963
1964 *match_level = MLX5_MATCH_L2;
1965 }
1966 }
1967
1968 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
1969 struct flow_match_eth_addrs match;
1970
1971 flow_rule_match_eth_addrs(rule, &match);
1972 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1973 dmac_47_16),
1974 match.mask->dst);
1975 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1976 dmac_47_16),
1977 match.key->dst);
1978
1979 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1980 smac_47_16),
1981 match.mask->src);
1982 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1983 smac_47_16),
1984 match.key->src);
1985
1986 if (!is_zero_ether_addr(match.mask->src) ||
1987 !is_zero_ether_addr(match.mask->dst))
1988 *match_level = MLX5_MATCH_L2;
1989 }
1990
1991 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
1992 struct flow_match_control match;
1993
1994 flow_rule_match_control(rule, &match);
1995 addr_type = match.key->addr_type;
1996
1997 /* the HW doesn't support frag first/later */
1998 if (match.mask->flags & FLOW_DIS_FIRST_FRAG)
1999 return -EOPNOTSUPP;
2000
2001 if (match.mask->flags & FLOW_DIS_IS_FRAGMENT) {
2002 MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
2003 MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
2004 match.key->flags & FLOW_DIS_IS_FRAGMENT);
2005
2006 /* the HW doesn't need L3 inline to match on frag=no */
2007 if (!(match.key->flags & FLOW_DIS_IS_FRAGMENT))
2008 *match_level = MLX5_MATCH_L2;
2009 /* *** L2 attributes parsing up to here *** */
2010 else
2011 *match_level = MLX5_MATCH_L3;
2012 }
2013 }
2014
2015 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
2016 struct flow_match_basic match;
2017
2018 flow_rule_match_basic(rule, &match);
2019 ip_proto = match.key->ip_proto;
2020
2021 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
2022 match.mask->ip_proto);
2023 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
2024 match.key->ip_proto);
2025
2026 if (match.mask->ip_proto)
2027 *match_level = MLX5_MATCH_L3;
2028 }
2029
2030 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
2031 struct flow_match_ipv4_addrs match;
2032
2033 flow_rule_match_ipv4_addrs(rule, &match);
2034 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2035 src_ipv4_src_ipv6.ipv4_layout.ipv4),
2036 &match.mask->src, sizeof(match.mask->src));
2037 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2038 src_ipv4_src_ipv6.ipv4_layout.ipv4),
2039 &match.key->src, sizeof(match.key->src));
2040 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2041 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2042 &match.mask->dst, sizeof(match.mask->dst));
2043 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2044 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2045 &match.key->dst, sizeof(match.key->dst));
2046
2047 if (match.mask->src || match.mask->dst)
2048 *match_level = MLX5_MATCH_L3;
2049 }
2050
2051 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
2052 struct flow_match_ipv6_addrs match;
2053
2054 flow_rule_match_ipv6_addrs(rule, &match);
2055 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2056 src_ipv4_src_ipv6.ipv6_layout.ipv6),
2057 &match.mask->src, sizeof(match.mask->src));
2058 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2059 src_ipv4_src_ipv6.ipv6_layout.ipv6),
2060 &match.key->src, sizeof(match.key->src));
2061
2062 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2063 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
2064 &match.mask->dst, sizeof(match.mask->dst));
2065 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2066 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
2067 &match.key->dst, sizeof(match.key->dst));
2068
2069 if (ipv6_addr_type(&match.mask->src) != IPV6_ADDR_ANY ||
2070 ipv6_addr_type(&match.mask->dst) != IPV6_ADDR_ANY)
2071 *match_level = MLX5_MATCH_L3;
2072 }
2073
2074 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
2075 struct flow_match_ip match;
2076
2077 flow_rule_match_ip(rule, &match);
2078 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn,
2079 match.mask->tos & 0x3);
2080 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn,
2081 match.key->tos & 0x3);
2082
2083 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp,
2084 match.mask->tos >> 2);
2085 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp,
2086 match.key->tos >> 2);
2087
2088 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit,
2089 match.mask->ttl);
2090 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit,
2091 match.key->ttl);
2092
2093 if (match.mask->ttl &&
2094 !MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
2095 ft_field_support.outer_ipv4_ttl)) {
2096 NL_SET_ERR_MSG_MOD(extack,
2097 "Matching on TTL is not supported");
2098 return -EOPNOTSUPP;
2099 }
2100
2101 if (match.mask->tos || match.mask->ttl)
2102 *match_level = MLX5_MATCH_L3;
2103 }
2104
2105 /* *** L3 attributes parsing up to here *** */
2106
2107 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
2108 struct flow_match_ports match;
2109
2110 flow_rule_match_ports(rule, &match);
2111 switch (ip_proto) {
2112 case IPPROTO_TCP:
2113 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2114 tcp_sport, ntohs(match.mask->src));
2115 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2116 tcp_sport, ntohs(match.key->src));
2117
2118 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2119 tcp_dport, ntohs(match.mask->dst));
2120 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2121 tcp_dport, ntohs(match.key->dst));
2122 break;
2123
2124 case IPPROTO_UDP:
2125 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2126 udp_sport, ntohs(match.mask->src));
2127 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2128 udp_sport, ntohs(match.key->src));
2129
2130 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2131 udp_dport, ntohs(match.mask->dst));
2132 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2133 udp_dport, ntohs(match.key->dst));
2134 break;
2135 default:
2136 NL_SET_ERR_MSG_MOD(extack,
2137 "Only UDP and TCP transports are supported for L4 matching");
2138 netdev_err(priv->netdev,
2139 "Only UDP and TCP transport are supported\n");
2140 return -EINVAL;
2141 }
2142
2143 if (match.mask->src || match.mask->dst)
2144 *match_level = MLX5_MATCH_L4;
2145 }
2146
2147 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) {
2148 struct flow_match_tcp match;
2149
2150 flow_rule_match_tcp(rule, &match);
2151 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
2152 ntohs(match.mask->flags));
2153 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
2154 ntohs(match.key->flags));
2155
2156 if (match.mask->flags)
2157 *match_level = MLX5_MATCH_L4;
2158 }
2159
2160 return 0;
2161}
2162
2163static int parse_cls_flower(struct mlx5e_priv *priv,
2164 struct mlx5e_tc_flow *flow,
2165 struct mlx5_flow_spec *spec,
2166 struct flow_cls_offload *f,
2167 struct net_device *filter_dev)
2168{
2169 u8 inner_match_level, outer_match_level, non_tunnel_match_level;
2170 struct netlink_ext_ack *extack = f->common.extack;
2171 struct mlx5_core_dev *dev = priv->mdev;
2172 struct mlx5_eswitch *esw = dev->priv.eswitch;
2173 struct mlx5e_rep_priv *rpriv = priv->ppriv;
2174 struct mlx5_eswitch_rep *rep;
2175 bool is_eswitch_flow;
2176 int err;
2177
2178 inner_match_level = MLX5_MATCH_NONE;
2179 outer_match_level = MLX5_MATCH_NONE;
2180
2181 err = __parse_cls_flower(priv, spec, f, filter_dev, &inner_match_level,
2182 &outer_match_level);
2183 non_tunnel_match_level = (inner_match_level == MLX5_MATCH_NONE) ?
2184 outer_match_level : inner_match_level;
2185
2186 is_eswitch_flow = mlx5e_is_eswitch_flow(flow);
2187 if (!err && is_eswitch_flow) {
2188 rep = rpriv->rep;
2189 if (rep->vport != MLX5_VPORT_UPLINK &&
2190 (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
2191 esw->offloads.inline_mode < non_tunnel_match_level)) {
2192 NL_SET_ERR_MSG_MOD(extack,
2193 "Flow is not offloaded due to min inline setting");
2194 netdev_warn(priv->netdev,
2195 "Flow is not offloaded due to min inline setting, required %d actual %d\n",
2196 non_tunnel_match_level, esw->offloads.inline_mode);
2197 return -EOPNOTSUPP;
2198 }
2199 }
2200
2201 if (is_eswitch_flow) {
2202 flow->esw_attr->inner_match_level = inner_match_level;
2203 flow->esw_attr->outer_match_level = outer_match_level;
2204 } else {
2205 flow->nic_attr->match_level = non_tunnel_match_level;
2206 }
2207
2208 return err;
2209}
2210
2211struct pedit_headers {
2212 struct ethhdr eth;
2213 struct vlan_hdr vlan;
2214 struct iphdr ip4;
2215 struct ipv6hdr ip6;
2216 struct tcphdr tcp;
2217 struct udphdr udp;
2218};
2219
2220struct pedit_headers_action {
2221 struct pedit_headers vals;
2222 struct pedit_headers masks;
2223 u32 pedits;
2224};
2225
2226static int pedit_header_offsets[] = {
2227 [FLOW_ACT_MANGLE_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth),
2228 [FLOW_ACT_MANGLE_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4),
2229 [FLOW_ACT_MANGLE_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6),
2230 [FLOW_ACT_MANGLE_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp),
2231 [FLOW_ACT_MANGLE_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp),
2232};
2233
2234#define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype])
2235
2236static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset,
2237 struct pedit_headers_action *hdrs)
2238{
2239 u32 *curr_pmask, *curr_pval;
2240
2241 curr_pmask = (u32 *)(pedit_header(&hdrs->masks, hdr_type) + offset);
2242 curr_pval = (u32 *)(pedit_header(&hdrs->vals, hdr_type) + offset);
2243
2244 if (*curr_pmask & mask) /* disallow acting twice on the same location */
2245 goto out_err;
2246
2247 *curr_pmask |= mask;
2248 *curr_pval |= (val & mask);
2249
2250 return 0;
2251
2252out_err:
2253 return -EOPNOTSUPP;
2254}
2255
2256struct mlx5_fields {
2257 u8 field;
2258 u8 field_bsize;
2259 u32 field_mask;
2260 u32 offset;
2261 u32 match_offset;
2262};
2263
2264#define OFFLOAD(fw_field, field_bsize, field_mask, field, off, match_field) \
2265 {MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, field_bsize, field_mask, \
2266 offsetof(struct pedit_headers, field) + (off), \
2267 MLX5_BYTE_OFF(fte_match_set_lyr_2_4, match_field)}
2268
2269/* masked values are the same and there are no rewrites that do not have a
2270 * match.
2271 */
2272#define SAME_VAL_MASK(type, valp, maskp, matchvalp, matchmaskp) ({ \
2273 type matchmaskx = *(type *)(matchmaskp); \
2274 type matchvalx = *(type *)(matchvalp); \
2275 type maskx = *(type *)(maskp); \
2276 type valx = *(type *)(valp); \
2277 \
2278 (valx & maskx) == (matchvalx & matchmaskx) && !(maskx & (maskx ^ \
2279 matchmaskx)); \
2280})
2281
2282static bool cmp_val_mask(void *valp, void *maskp, void *matchvalp,
2283 void *matchmaskp, u8 bsize)
2284{
2285 bool same = false;
2286
2287 switch (bsize) {
2288 case 8:
2289 same = SAME_VAL_MASK(u8, valp, maskp, matchvalp, matchmaskp);
2290 break;
2291 case 16:
2292 same = SAME_VAL_MASK(u16, valp, maskp, matchvalp, matchmaskp);
2293 break;
2294 case 32:
2295 same = SAME_VAL_MASK(u32, valp, maskp, matchvalp, matchmaskp);
2296 break;
2297 }
2298
2299 return same;
2300}
2301
2302static struct mlx5_fields fields[] = {
2303 OFFLOAD(DMAC_47_16, 32, U32_MAX, eth.h_dest[0], 0, dmac_47_16),
2304 OFFLOAD(DMAC_15_0, 16, U16_MAX, eth.h_dest[4], 0, dmac_15_0),
2305 OFFLOAD(SMAC_47_16, 32, U32_MAX, eth.h_source[0], 0, smac_47_16),
2306 OFFLOAD(SMAC_15_0, 16, U16_MAX, eth.h_source[4], 0, smac_15_0),
2307 OFFLOAD(ETHERTYPE, 16, U16_MAX, eth.h_proto, 0, ethertype),
2308 OFFLOAD(FIRST_VID, 16, U16_MAX, vlan.h_vlan_TCI, 0, first_vid),
2309
2310 OFFLOAD(IP_DSCP, 8, 0xfc, ip4.tos, 0, ip_dscp),
2311 OFFLOAD(IP_TTL, 8, U8_MAX, ip4.ttl, 0, ttl_hoplimit),
2312 OFFLOAD(SIPV4, 32, U32_MAX, ip4.saddr, 0, src_ipv4_src_ipv6.ipv4_layout.ipv4),
2313 OFFLOAD(DIPV4, 32, U32_MAX, ip4.daddr, 0, dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2314
2315 OFFLOAD(SIPV6_127_96, 32, U32_MAX, ip6.saddr.s6_addr32[0], 0,
2316 src_ipv4_src_ipv6.ipv6_layout.ipv6[0]),
2317 OFFLOAD(SIPV6_95_64, 32, U32_MAX, ip6.saddr.s6_addr32[1], 0,
2318 src_ipv4_src_ipv6.ipv6_layout.ipv6[4]),
2319 OFFLOAD(SIPV6_63_32, 32, U32_MAX, ip6.saddr.s6_addr32[2], 0,
2320 src_ipv4_src_ipv6.ipv6_layout.ipv6[8]),
2321 OFFLOAD(SIPV6_31_0, 32, U32_MAX, ip6.saddr.s6_addr32[3], 0,
2322 src_ipv4_src_ipv6.ipv6_layout.ipv6[12]),
2323 OFFLOAD(DIPV6_127_96, 32, U32_MAX, ip6.daddr.s6_addr32[0], 0,
2324 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[0]),
2325 OFFLOAD(DIPV6_95_64, 32, U32_MAX, ip6.daddr.s6_addr32[1], 0,
2326 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[4]),
2327 OFFLOAD(DIPV6_63_32, 32, U32_MAX, ip6.daddr.s6_addr32[2], 0,
2328 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[8]),
2329 OFFLOAD(DIPV6_31_0, 32, U32_MAX, ip6.daddr.s6_addr32[3], 0,
2330 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[12]),
2331 OFFLOAD(IPV6_HOPLIMIT, 8, U8_MAX, ip6.hop_limit, 0, ttl_hoplimit),
2332
2333 OFFLOAD(TCP_SPORT, 16, U16_MAX, tcp.source, 0, tcp_sport),
2334 OFFLOAD(TCP_DPORT, 16, U16_MAX, tcp.dest, 0, tcp_dport),
2335 /* in linux iphdr tcp_flags is 8 bits long */
2336 OFFLOAD(TCP_FLAGS, 8, U8_MAX, tcp.ack_seq, 5, tcp_flags),
2337
2338 OFFLOAD(UDP_SPORT, 16, U16_MAX, udp.source, 0, udp_sport),
2339 OFFLOAD(UDP_DPORT, 16, U16_MAX, udp.dest, 0, udp_dport),
2340};
2341
2342/* On input attr->max_mod_hdr_actions tells how many HW actions can be parsed at
2343 * max from the SW pedit action. On success, attr->num_mod_hdr_actions
2344 * says how many HW actions were actually parsed.
2345 */
2346static int offload_pedit_fields(struct pedit_headers_action *hdrs,
2347 struct mlx5e_tc_flow_parse_attr *parse_attr,
2348 u32 *action_flags,
2349 struct netlink_ext_ack *extack)
2350{
2351 struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
2352 int i, action_size, nactions, max_actions, first, last, next_z;
2353 void *headers_c, *headers_v, *action, *vals_p;
2354 u32 *s_masks_p, *a_masks_p, s_mask, a_mask;
2355 struct mlx5_fields *f;
2356 unsigned long mask;
2357 __be32 mask_be32;
2358 __be16 mask_be16;
2359 u8 cmd;
2360
2361 headers_c = get_match_headers_criteria(*action_flags, &parse_attr->spec);
2362 headers_v = get_match_headers_value(*action_flags, &parse_attr->spec);
2363
2364 set_masks = &hdrs[0].masks;
2365 add_masks = &hdrs[1].masks;
2366 set_vals = &hdrs[0].vals;
2367 add_vals = &hdrs[1].vals;
2368
2369 action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
2370 action = parse_attr->mod_hdr_actions +
2371 parse_attr->num_mod_hdr_actions * action_size;
2372
2373 max_actions = parse_attr->max_mod_hdr_actions;
2374 nactions = parse_attr->num_mod_hdr_actions;
2375
2376 for (i = 0; i < ARRAY_SIZE(fields); i++) {
2377 bool skip;
2378
2379 f = &fields[i];
2380 /* avoid seeing bits set from previous iterations */
2381 s_mask = 0;
2382 a_mask = 0;
2383
2384 s_masks_p = (void *)set_masks + f->offset;
2385 a_masks_p = (void *)add_masks + f->offset;
2386
2387 s_mask = *s_masks_p & f->field_mask;
2388 a_mask = *a_masks_p & f->field_mask;
2389
2390 if (!s_mask && !a_mask) /* nothing to offload here */
2391 continue;
2392
2393 if (s_mask && a_mask) {
2394 NL_SET_ERR_MSG_MOD(extack,
2395 "can't set and add to the same HW field");
2396 printk(KERN_WARNING "mlx5: can't set and add to the same HW field (%x)\n", f->field);
2397 return -EOPNOTSUPP;
2398 }
2399
2400 if (nactions == max_actions) {
2401 NL_SET_ERR_MSG_MOD(extack,
2402 "too many pedit actions, can't offload");
2403 printk(KERN_WARNING "mlx5: parsed %d pedit actions, can't do more\n", nactions);
2404 return -EOPNOTSUPP;
2405 }
2406
2407 skip = false;
2408 if (s_mask) {
2409 void *match_mask = headers_c + f->match_offset;
2410 void *match_val = headers_v + f->match_offset;
2411
2412 cmd = MLX5_ACTION_TYPE_SET;
2413 mask = s_mask;
2414 vals_p = (void *)set_vals + f->offset;
2415 /* don't rewrite if we have a match on the same value */
2416 if (cmp_val_mask(vals_p, s_masks_p, match_val,
2417 match_mask, f->field_bsize))
2418 skip = true;
2419 /* clear to denote we consumed this field */
2420 *s_masks_p &= ~f->field_mask;
2421 } else {
2422 cmd = MLX5_ACTION_TYPE_ADD;
2423 mask = a_mask;
2424 vals_p = (void *)add_vals + f->offset;
2425 /* add 0 is no change */
2426 if ((*(u32 *)vals_p & f->field_mask) == 0)
2427 skip = true;
2428 /* clear to denote we consumed this field */
2429 *a_masks_p &= ~f->field_mask;
2430 }
2431 if (skip)
2432 continue;
2433
2434 if (f->field_bsize == 32) {
2435 mask_be32 = *(__be32 *)&mask;
2436 mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32));
2437 } else if (f->field_bsize == 16) {
2438 mask_be16 = *(__be16 *)&mask;
2439 mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16));
2440 }
2441
2442 first = find_first_bit(&mask, f->field_bsize);
2443 next_z = find_next_zero_bit(&mask, f->field_bsize, first);
2444 last = find_last_bit(&mask, f->field_bsize);
2445 if (first < next_z && next_z < last) {
2446 NL_SET_ERR_MSG_MOD(extack,
2447 "rewrite of few sub-fields isn't supported");
2448 printk(KERN_WARNING "mlx5: rewrite of few sub-fields (mask %lx) isn't offloaded\n",
2449 mask);
2450 return -EOPNOTSUPP;
2451 }
2452
2453 MLX5_SET(set_action_in, action, action_type, cmd);
2454 MLX5_SET(set_action_in, action, field, f->field);
2455
2456 if (cmd == MLX5_ACTION_TYPE_SET) {
2457 int start;
2458
2459 /* if field is bit sized it can start not from first bit */
2460 start = find_first_bit((unsigned long *)&f->field_mask,
2461 f->field_bsize);
2462
2463 MLX5_SET(set_action_in, action, offset, first - start);
2464 /* length is num of bits to be written, zero means length of 32 */
2465 MLX5_SET(set_action_in, action, length, (last - first + 1));
2466 }
2467
2468 if (f->field_bsize == 32)
2469 MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first);
2470 else if (f->field_bsize == 16)
2471 MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first);
2472 else if (f->field_bsize == 8)
2473 MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first);
2474
2475 action += action_size;
2476 nactions++;
2477 }
2478
2479 parse_attr->num_mod_hdr_actions = nactions;
2480 return 0;
2481}
2482
2483static int mlx5e_flow_namespace_max_modify_action(struct mlx5_core_dev *mdev,
2484 int namespace)
2485{
2486 if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */
2487 return MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, max_modify_header_actions);
2488 else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */
2489 return MLX5_CAP_FLOWTABLE_NIC_RX(mdev, max_modify_header_actions);
2490}
2491
2492static int alloc_mod_hdr_actions(struct mlx5e_priv *priv,
2493 struct pedit_headers_action *hdrs,
2494 int namespace,
2495 struct mlx5e_tc_flow_parse_attr *parse_attr)
2496{
2497 int nkeys, action_size, max_actions;
2498
2499 nkeys = hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits +
2500 hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits;
2501 action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
2502
2503 max_actions = mlx5e_flow_namespace_max_modify_action(priv->mdev, namespace);
2504 /* can get up to crazingly 16 HW actions in 32 bits pedit SW key */
2505 max_actions = min(max_actions, nkeys * 16);
2506
2507 parse_attr->mod_hdr_actions = kcalloc(max_actions, action_size, GFP_KERNEL);
2508 if (!parse_attr->mod_hdr_actions)
2509 return -ENOMEM;
2510
2511 parse_attr->max_mod_hdr_actions = max_actions;
2512 return 0;
2513}
2514
2515static const struct pedit_headers zero_masks = {};
2516
2517static int parse_tc_pedit_action(struct mlx5e_priv *priv,
2518 const struct flow_action_entry *act, int namespace,
2519 struct mlx5e_tc_flow_parse_attr *parse_attr,
2520 struct pedit_headers_action *hdrs,
2521 struct netlink_ext_ack *extack)
2522{
2523 u8 cmd = (act->id == FLOW_ACTION_MANGLE) ? 0 : 1;
2524 int err = -EOPNOTSUPP;
2525 u32 mask, val, offset;
2526 u8 htype;
2527
2528 htype = act->mangle.htype;
2529 err = -EOPNOTSUPP; /* can't be all optimistic */
2530
2531 if (htype == FLOW_ACT_MANGLE_UNSPEC) {
2532 NL_SET_ERR_MSG_MOD(extack, "legacy pedit isn't offloaded");
2533 goto out_err;
2534 }
2535
2536 if (!mlx5e_flow_namespace_max_modify_action(priv->mdev, namespace)) {
2537 NL_SET_ERR_MSG_MOD(extack,
2538 "The pedit offload action is not supported");
2539 goto out_err;
2540 }
2541
2542 mask = act->mangle.mask;
2543 val = act->mangle.val;
2544 offset = act->mangle.offset;
2545
2546 err = set_pedit_val(htype, ~mask, val, offset, &hdrs[cmd]);
2547 if (err)
2548 goto out_err;
2549
2550 hdrs[cmd].pedits++;
2551
2552 return 0;
2553out_err:
2554 return err;
2555}
2556
2557static int alloc_tc_pedit_action(struct mlx5e_priv *priv, int namespace,
2558 struct mlx5e_tc_flow_parse_attr *parse_attr,
2559 struct pedit_headers_action *hdrs,
2560 u32 *action_flags,
2561 struct netlink_ext_ack *extack)
2562{
2563 struct pedit_headers *cmd_masks;
2564 int err;
2565 u8 cmd;
2566
2567 if (!parse_attr->mod_hdr_actions) {
2568 err = alloc_mod_hdr_actions(priv, hdrs, namespace, parse_attr);
2569 if (err)
2570 goto out_err;
2571 }
2572
2573 err = offload_pedit_fields(hdrs, parse_attr, action_flags, extack);
2574 if (err < 0)
2575 goto out_dealloc_parsed_actions;
2576
2577 for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
2578 cmd_masks = &hdrs[cmd].masks;
2579 if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
2580 NL_SET_ERR_MSG_MOD(extack,
2581 "attempt to offload an unsupported field");
2582 netdev_warn(priv->netdev, "attempt to offload an unsupported field (cmd %d)\n", cmd);
2583 print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
2584 16, 1, cmd_masks, sizeof(zero_masks), true);
2585 err = -EOPNOTSUPP;
2586 goto out_dealloc_parsed_actions;
2587 }
2588 }
2589
2590 return 0;
2591
2592out_dealloc_parsed_actions:
2593 kfree(parse_attr->mod_hdr_actions);
2594out_err:
2595 return err;
2596}
2597
2598static bool csum_offload_supported(struct mlx5e_priv *priv,
2599 u32 action,
2600 u32 update_flags,
2601 struct netlink_ext_ack *extack)
2602{
2603 u32 prot_flags = TCA_CSUM_UPDATE_FLAG_IPV4HDR | TCA_CSUM_UPDATE_FLAG_TCP |
2604 TCA_CSUM_UPDATE_FLAG_UDP;
2605
2606 /* The HW recalcs checksums only if re-writing headers */
2607 if (!(action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)) {
2608 NL_SET_ERR_MSG_MOD(extack,
2609 "TC csum action is only offloaded with pedit");
2610 netdev_warn(priv->netdev,
2611 "TC csum action is only offloaded with pedit\n");
2612 return false;
2613 }
2614
2615 if (update_flags & ~prot_flags) {
2616 NL_SET_ERR_MSG_MOD(extack,
2617 "can't offload TC csum action for some header/s");
2618 netdev_warn(priv->netdev,
2619 "can't offload TC csum action for some header/s - flags %#x\n",
2620 update_flags);
2621 return false;
2622 }
2623
2624 return true;
2625}
2626
2627struct ip_ttl_word {
2628 __u8 ttl;
2629 __u8 protocol;
2630 __sum16 check;
2631};
2632
2633struct ipv6_hoplimit_word {
2634 __be16 payload_len;
2635 __u8 nexthdr;
2636 __u8 hop_limit;
2637};
2638
2639static bool is_action_keys_supported(const struct flow_action_entry *act)
2640{
2641 u32 mask, offset;
2642 u8 htype;
2643
2644 htype = act->mangle.htype;
2645 offset = act->mangle.offset;
2646 mask = ~act->mangle.mask;
2647 /* For IPv4 & IPv6 header check 4 byte word,
2648 * to determine that modified fields
2649 * are NOT ttl & hop_limit only.
2650 */
2651 if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP4) {
2652 struct ip_ttl_word *ttl_word =
2653 (struct ip_ttl_word *)&mask;
2654
2655 if (offset != offsetof(struct iphdr, ttl) ||
2656 ttl_word->protocol ||
2657 ttl_word->check) {
2658 return true;
2659 }
2660 } else if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP6) {
2661 struct ipv6_hoplimit_word *hoplimit_word =
2662 (struct ipv6_hoplimit_word *)&mask;
2663
2664 if (offset != offsetof(struct ipv6hdr, payload_len) ||
2665 hoplimit_word->payload_len ||
2666 hoplimit_word->nexthdr) {
2667 return true;
2668 }
2669 }
2670 return false;
2671}
2672
2673static bool modify_header_match_supported(struct mlx5_flow_spec *spec,
2674 struct flow_action *flow_action,
2675 u32 actions,
2676 struct netlink_ext_ack *extack)
2677{
2678 const struct flow_action_entry *act;
2679 bool modify_ip_header;
2680 void *headers_v;
2681 u16 ethertype;
2682 u8 ip_proto;
2683 int i;
2684
2685 headers_v = get_match_headers_value(actions, spec);
2686 ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
2687
2688 /* for non-IP we only re-write MACs, so we're okay */
2689 if (ethertype != ETH_P_IP && ethertype != ETH_P_IPV6)
2690 goto out_ok;
2691
2692 modify_ip_header = false;
2693 flow_action_for_each(i, act, flow_action) {
2694 if (act->id != FLOW_ACTION_MANGLE &&
2695 act->id != FLOW_ACTION_ADD)
2696 continue;
2697
2698 if (is_action_keys_supported(act)) {
2699 modify_ip_header = true;
2700 break;
2701 }
2702 }
2703
2704 ip_proto = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_protocol);
2705 if (modify_ip_header && ip_proto != IPPROTO_TCP &&
2706 ip_proto != IPPROTO_UDP && ip_proto != IPPROTO_ICMP) {
2707 NL_SET_ERR_MSG_MOD(extack,
2708 "can't offload re-write of non TCP/UDP");
2709 pr_info("can't offload re-write of ip proto %d\n", ip_proto);
2710 return false;
2711 }
2712
2713out_ok:
2714 return true;
2715}
2716
2717static bool actions_match_supported(struct mlx5e_priv *priv,
2718 struct flow_action *flow_action,
2719 struct mlx5e_tc_flow_parse_attr *parse_attr,
2720 struct mlx5e_tc_flow *flow,
2721 struct netlink_ext_ack *extack)
2722{
2723 u32 actions;
2724
2725 if (mlx5e_is_eswitch_flow(flow))
2726 actions = flow->esw_attr->action;
2727 else
2728 actions = flow->nic_attr->action;
2729
2730 if (flow_flag_test(flow, EGRESS) &&
2731 !((actions & MLX5_FLOW_CONTEXT_ACTION_DECAP) ||
2732 (actions & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) ||
2733 (actions & MLX5_FLOW_CONTEXT_ACTION_DROP)))
2734 return false;
2735
2736 if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
2737 return modify_header_match_supported(&parse_attr->spec,
2738 flow_action, actions,
2739 extack);
2740
2741 return true;
2742}
2743
2744static bool same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
2745{
2746 struct mlx5_core_dev *fmdev, *pmdev;
2747 u64 fsystem_guid, psystem_guid;
2748
2749 fmdev = priv->mdev;
2750 pmdev = peer_priv->mdev;
2751
2752 fsystem_guid = mlx5_query_nic_system_image_guid(fmdev);
2753 psystem_guid = mlx5_query_nic_system_image_guid(pmdev);
2754
2755 return (fsystem_guid == psystem_guid);
2756}
2757
2758static int add_vlan_rewrite_action(struct mlx5e_priv *priv, int namespace,
2759 const struct flow_action_entry *act,
2760 struct mlx5e_tc_flow_parse_attr *parse_attr,
2761 struct pedit_headers_action *hdrs,
2762 u32 *action, struct netlink_ext_ack *extack)
2763{
2764 u16 mask16 = VLAN_VID_MASK;
2765 u16 val16 = act->vlan.vid & VLAN_VID_MASK;
2766 const struct flow_action_entry pedit_act = {
2767 .id = FLOW_ACTION_MANGLE,
2768 .mangle.htype = FLOW_ACT_MANGLE_HDR_TYPE_ETH,
2769 .mangle.offset = offsetof(struct vlan_ethhdr, h_vlan_TCI),
2770 .mangle.mask = ~(u32)be16_to_cpu(*(__be16 *)&mask16),
2771 .mangle.val = (u32)be16_to_cpu(*(__be16 *)&val16),
2772 };
2773 u8 match_prio_mask, match_prio_val;
2774 void *headers_c, *headers_v;
2775 int err;
2776
2777 headers_c = get_match_headers_criteria(*action, &parse_attr->spec);
2778 headers_v = get_match_headers_value(*action, &parse_attr->spec);
2779
2780 if (!(MLX5_GET(fte_match_set_lyr_2_4, headers_c, cvlan_tag) &&
2781 MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag))) {
2782 NL_SET_ERR_MSG_MOD(extack,
2783 "VLAN rewrite action must have VLAN protocol match");
2784 return -EOPNOTSUPP;
2785 }
2786
2787 match_prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio);
2788 match_prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio);
2789 if (act->vlan.prio != (match_prio_val & match_prio_mask)) {
2790 NL_SET_ERR_MSG_MOD(extack,
2791 "Changing VLAN prio is not supported");
2792 return -EOPNOTSUPP;
2793 }
2794
2795 err = parse_tc_pedit_action(priv, &pedit_act, namespace, parse_attr,
2796 hdrs, NULL);
2797 *action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
2798
2799 return err;
2800}
2801
2802static int
2803add_vlan_prio_tag_rewrite_action(struct mlx5e_priv *priv,
2804 struct mlx5e_tc_flow_parse_attr *parse_attr,
2805 struct pedit_headers_action *hdrs,
2806 u32 *action, struct netlink_ext_ack *extack)
2807{
2808 const struct flow_action_entry prio_tag_act = {
2809 .vlan.vid = 0,
2810 .vlan.prio =
2811 MLX5_GET(fte_match_set_lyr_2_4,
2812 get_match_headers_value(*action,
2813 &parse_attr->spec),
2814 first_prio) &
2815 MLX5_GET(fte_match_set_lyr_2_4,
2816 get_match_headers_criteria(*action,
2817 &parse_attr->spec),
2818 first_prio),
2819 };
2820
2821 return add_vlan_rewrite_action(priv, MLX5_FLOW_NAMESPACE_FDB,
2822 &prio_tag_act, parse_attr, hdrs, action,
2823 extack);
2824}
2825
2826static int parse_tc_nic_actions(struct mlx5e_priv *priv,
2827 struct flow_action *flow_action,
2828 struct mlx5e_tc_flow_parse_attr *parse_attr,
2829 struct mlx5e_tc_flow *flow,
2830 struct netlink_ext_ack *extack)
2831{
2832 struct mlx5_nic_flow_attr *attr = flow->nic_attr;
2833 struct pedit_headers_action hdrs[2] = {};
2834 const struct flow_action_entry *act;
2835 u32 action = 0;
2836 int err, i;
2837
2838 if (!flow_action_has_entries(flow_action))
2839 return -EINVAL;
2840
2841 attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
2842
2843 flow_action_for_each(i, act, flow_action) {
2844 switch (act->id) {
2845 case FLOW_ACTION_DROP:
2846 action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
2847 if (MLX5_CAP_FLOWTABLE(priv->mdev,
2848 flow_table_properties_nic_receive.flow_counter))
2849 action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
2850 break;
2851 case FLOW_ACTION_MANGLE:
2852 case FLOW_ACTION_ADD:
2853 err = parse_tc_pedit_action(priv, act, MLX5_FLOW_NAMESPACE_KERNEL,
2854 parse_attr, hdrs, extack);
2855 if (err)
2856 return err;
2857
2858 action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR |
2859 MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2860 break;
2861 case FLOW_ACTION_VLAN_MANGLE:
2862 err = add_vlan_rewrite_action(priv,
2863 MLX5_FLOW_NAMESPACE_KERNEL,
2864 act, parse_attr, hdrs,
2865 &action, extack);
2866 if (err)
2867 return err;
2868
2869 break;
2870 case FLOW_ACTION_CSUM:
2871 if (csum_offload_supported(priv, action,
2872 act->csum_flags,
2873 extack))
2874 break;
2875
2876 return -EOPNOTSUPP;
2877 case FLOW_ACTION_REDIRECT: {
2878 struct net_device *peer_dev = act->dev;
2879
2880 if (priv->netdev->netdev_ops == peer_dev->netdev_ops &&
2881 same_hw_devs(priv, netdev_priv(peer_dev))) {
2882 parse_attr->mirred_ifindex[0] = peer_dev->ifindex;
2883 flow_flag_set(flow, HAIRPIN);
2884 action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
2885 MLX5_FLOW_CONTEXT_ACTION_COUNT;
2886 } else {
2887 NL_SET_ERR_MSG_MOD(extack,
2888 "device is not on same HW, can't offload");
2889 netdev_warn(priv->netdev, "device %s not on same HW, can't offload\n",
2890 peer_dev->name);
2891 return -EINVAL;
2892 }
2893 }
2894 break;
2895 case FLOW_ACTION_MARK: {
2896 u32 mark = act->mark;
2897
2898 if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
2899 NL_SET_ERR_MSG_MOD(extack,
2900 "Bad flow mark - only 16 bit is supported");
2901 return -EINVAL;
2902 }
2903
2904 attr->flow_tag = mark;
2905 action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2906 }
2907 break;
2908 default:
2909 NL_SET_ERR_MSG_MOD(extack, "The offload action is not supported");
2910 return -EOPNOTSUPP;
2911 }
2912 }
2913
2914 if (hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits ||
2915 hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) {
2916 err = alloc_tc_pedit_action(priv, MLX5_FLOW_NAMESPACE_KERNEL,
2917 parse_attr, hdrs, &action, extack);
2918 if (err)
2919 return err;
2920 /* in case all pedit actions are skipped, remove the MOD_HDR
2921 * flag.
2922 */
2923 if (parse_attr->num_mod_hdr_actions == 0) {
2924 action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
2925 kfree(parse_attr->mod_hdr_actions);
2926 }
2927 }
2928
2929 attr->action = action;
2930 if (!actions_match_supported(priv, flow_action, parse_attr, flow, extack))
2931 return -EOPNOTSUPP;
2932
2933 return 0;
2934}
2935
2936struct encap_key {
2937 const struct ip_tunnel_key *ip_tun_key;
2938 struct mlx5e_tc_tunnel *tc_tunnel;
2939};
2940
2941static inline int cmp_encap_info(struct encap_key *a,
2942 struct encap_key *b)
2943{
2944 return memcmp(a->ip_tun_key, b->ip_tun_key, sizeof(*a->ip_tun_key)) ||
2945 a->tc_tunnel->tunnel_type != b->tc_tunnel->tunnel_type;
2946}
2947
2948static inline int hash_encap_info(struct encap_key *key)
2949{
2950 return jhash(key->ip_tun_key, sizeof(*key->ip_tun_key),
2951 key->tc_tunnel->tunnel_type);
2952}
2953
2954
2955static bool is_merged_eswitch_dev(struct mlx5e_priv *priv,
2956 struct net_device *peer_netdev)
2957{
2958 struct mlx5e_priv *peer_priv;
2959
2960 peer_priv = netdev_priv(peer_netdev);
2961
2962 return (MLX5_CAP_ESW(priv->mdev, merged_eswitch) &&
2963 mlx5e_eswitch_rep(priv->netdev) &&
2964 mlx5e_eswitch_rep(peer_netdev) &&
2965 same_hw_devs(priv, peer_priv));
2966}
2967
2968
2969
2970bool mlx5e_encap_take(struct mlx5e_encap_entry *e)
2971{
2972 return refcount_inc_not_zero(&e->refcnt);
2973}
2974
2975static struct mlx5e_encap_entry *
2976mlx5e_encap_get(struct mlx5e_priv *priv, struct encap_key *key,
2977 uintptr_t hash_key)
2978{
2979 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2980 struct mlx5e_encap_entry *e;
2981 struct encap_key e_key;
2982
2983 hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
2984 encap_hlist, hash_key) {
2985 e_key.ip_tun_key = &e->tun_info->key;
2986 e_key.tc_tunnel = e->tunnel;
2987 if (!cmp_encap_info(&e_key, key) &&
2988 mlx5e_encap_take(e))
2989 return e;
2990 }
2991
2992 return NULL;
2993}
2994
2995static struct ip_tunnel_info *dup_tun_info(const struct ip_tunnel_info *tun_info)
2996{
2997 size_t tun_size = sizeof(*tun_info) + tun_info->options_len;
2998
2999 return kmemdup(tun_info, tun_size, GFP_KERNEL);
3000}
3001
3002static int mlx5e_attach_encap(struct mlx5e_priv *priv,
3003 struct mlx5e_tc_flow *flow,
3004 struct net_device *mirred_dev,
3005 int out_index,
3006 struct netlink_ext_ack *extack,
3007 struct net_device **encap_dev,
3008 bool *encap_valid)
3009{
3010 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3011 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
3012 struct mlx5e_tc_flow_parse_attr *parse_attr;
3013 const struct ip_tunnel_info *tun_info;
3014 struct encap_key key;
3015 struct mlx5e_encap_entry *e;
3016 unsigned short family;
3017 uintptr_t hash_key;
3018 int err = 0;
3019
3020 parse_attr = attr->parse_attr;
3021 tun_info = parse_attr->tun_info[out_index];
3022 family = ip_tunnel_info_af(tun_info);
3023 key.ip_tun_key = &tun_info->key;
3024 key.tc_tunnel = mlx5e_get_tc_tun(mirred_dev);
3025 if (!key.tc_tunnel) {
3026 NL_SET_ERR_MSG_MOD(extack, "Unsupported tunnel");
3027 return -EOPNOTSUPP;
3028 }
3029
3030 hash_key = hash_encap_info(&key);
3031
3032 mutex_lock(&esw->offloads.encap_tbl_lock);
3033 e = mlx5e_encap_get(priv, &key, hash_key);
3034
3035 /* must verify if encap is valid or not */
3036 if (e) {
3037 mutex_unlock(&esw->offloads.encap_tbl_lock);
3038 wait_for_completion(&e->res_ready);
3039
3040 /* Protect against concurrent neigh update. */
3041 mutex_lock(&esw->offloads.encap_tbl_lock);
3042 if (e->compl_result < 0) {
3043 err = -EREMOTEIO;
3044 goto out_err;
3045 }
3046 goto attach_flow;
3047 }
3048
3049 e = kzalloc(sizeof(*e), GFP_KERNEL);
3050 if (!e) {
3051 err = -ENOMEM;
3052 goto out_err;
3053 }
3054
3055 refcount_set(&e->refcnt, 1);
3056 init_completion(&e->res_ready);
3057
3058 tun_info = dup_tun_info(tun_info);
3059 if (!tun_info) {
3060 err = -ENOMEM;
3061 goto out_err_init;
3062 }
3063 e->tun_info = tun_info;
3064 err = mlx5e_tc_tun_init_encap_attr(mirred_dev, priv, e, extack);
3065 if (err)
3066 goto out_err_init;
3067
3068 INIT_LIST_HEAD(&e->flows);
3069 hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
3070 mutex_unlock(&esw->offloads.encap_tbl_lock);
3071
3072 if (family == AF_INET)
3073 err = mlx5e_tc_tun_create_header_ipv4(priv, mirred_dev, e);
3074 else if (family == AF_INET6)
3075 err = mlx5e_tc_tun_create_header_ipv6(priv, mirred_dev, e);
3076
3077 /* Protect against concurrent neigh update. */
3078 mutex_lock(&esw->offloads.encap_tbl_lock);
3079 complete_all(&e->res_ready);
3080 if (err) {
3081 e->compl_result = err;
3082 goto out_err;
3083 }
3084 e->compl_result = 1;
3085
3086attach_flow:
3087 flow->encaps[out_index].e = e;
3088 list_add(&flow->encaps[out_index].list, &e->flows);
3089 flow->encaps[out_index].index = out_index;
3090 *encap_dev = e->out_dev;
3091 if (e->flags & MLX5_ENCAP_ENTRY_VALID) {
3092 attr->dests[out_index].pkt_reformat = e->pkt_reformat;
3093 attr->dests[out_index].flags |= MLX5_ESW_DEST_ENCAP_VALID;
3094 *encap_valid = true;
3095 } else {
3096 *encap_valid = false;
3097 }
3098 mutex_unlock(&esw->offloads.encap_tbl_lock);
3099
3100 return err;
3101
3102out_err:
3103 mutex_unlock(&esw->offloads.encap_tbl_lock);
3104 if (e)
3105 mlx5e_encap_put(priv, e);
3106 return err;
3107
3108out_err_init:
3109 mutex_unlock(&esw->offloads.encap_tbl_lock);
3110 kfree(tun_info);
3111 kfree(e);
3112 return err;
3113}
3114
3115static int parse_tc_vlan_action(struct mlx5e_priv *priv,
3116 const struct flow_action_entry *act,
3117 struct mlx5_esw_flow_attr *attr,
3118 u32 *action)
3119{
3120 u8 vlan_idx = attr->total_vlan;
3121
3122 if (vlan_idx >= MLX5_FS_VLAN_DEPTH)
3123 return -EOPNOTSUPP;
3124
3125 switch (act->id) {
3126 case FLOW_ACTION_VLAN_POP:
3127 if (vlan_idx) {
3128 if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
3129 MLX5_FS_VLAN_DEPTH))
3130 return -EOPNOTSUPP;
3131
3132 *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP_2;
3133 } else {
3134 *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
3135 }
3136 break;
3137 case FLOW_ACTION_VLAN_PUSH:
3138 attr->vlan_vid[vlan_idx] = act->vlan.vid;
3139 attr->vlan_prio[vlan_idx] = act->vlan.prio;
3140 attr->vlan_proto[vlan_idx] = act->vlan.proto;
3141 if (!attr->vlan_proto[vlan_idx])
3142 attr->vlan_proto[vlan_idx] = htons(ETH_P_8021Q);
3143
3144 if (vlan_idx) {
3145 if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
3146 MLX5_FS_VLAN_DEPTH))
3147 return -EOPNOTSUPP;
3148
3149 *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH_2;
3150 } else {
3151 if (!mlx5_eswitch_vlan_actions_supported(priv->mdev, 1) &&
3152 (act->vlan.proto != htons(ETH_P_8021Q) ||
3153 act->vlan.prio))
3154 return -EOPNOTSUPP;
3155
3156 *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
3157 }
3158 break;
3159 default:
3160 return -EINVAL;
3161 }
3162
3163 attr->total_vlan = vlan_idx + 1;
3164
3165 return 0;
3166}
3167
3168static int add_vlan_push_action(struct mlx5e_priv *priv,
3169 struct mlx5_esw_flow_attr *attr,
3170 struct net_device **out_dev,
3171 u32 *action)
3172{
3173 struct net_device *vlan_dev = *out_dev;
3174 struct flow_action_entry vlan_act = {
3175 .id = FLOW_ACTION_VLAN_PUSH,
3176 .vlan.vid = vlan_dev_vlan_id(vlan_dev),
3177 .vlan.proto = vlan_dev_vlan_proto(vlan_dev),
3178 .vlan.prio = 0,
3179 };
3180 int err;
3181
3182 err = parse_tc_vlan_action(priv, &vlan_act, attr, action);
3183 if (err)
3184 return err;
3185
3186 *out_dev = dev_get_by_index_rcu(dev_net(vlan_dev),
3187 dev_get_iflink(vlan_dev));
3188 if (is_vlan_dev(*out_dev))
3189 err = add_vlan_push_action(priv, attr, out_dev, action);
3190
3191 return err;
3192}
3193
3194static int add_vlan_pop_action(struct mlx5e_priv *priv,
3195 struct mlx5_esw_flow_attr *attr,
3196 u32 *action)
3197{
3198 int nest_level = attr->parse_attr->filter_dev->lower_level;
3199 struct flow_action_entry vlan_act = {
3200 .id = FLOW_ACTION_VLAN_POP,
3201 };
3202 int err = 0;
3203
3204 while (nest_level--) {
3205 err = parse_tc_vlan_action(priv, &vlan_act, attr, action);
3206 if (err)
3207 return err;
3208 }
3209
3210 return err;
3211}
3212
3213bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv,
3214 struct net_device *out_dev)
3215{
3216 if (is_merged_eswitch_dev(priv, out_dev))
3217 return true;
3218
3219 return mlx5e_eswitch_rep(out_dev) &&
3220 same_hw_devs(priv, netdev_priv(out_dev));
3221}
3222
3223static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
3224 struct flow_action *flow_action,
3225 struct mlx5e_tc_flow *flow,
3226 struct netlink_ext_ack *extack)
3227{
3228 struct pedit_headers_action hdrs[2] = {};
3229 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3230 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
3231 struct mlx5e_tc_flow_parse_attr *parse_attr = attr->parse_attr;
3232 struct mlx5e_rep_priv *rpriv = priv->ppriv;
3233 const struct ip_tunnel_info *info = NULL;
3234 bool ft_flow = mlx5e_is_ft_flow(flow);
3235 const struct flow_action_entry *act;
3236 bool encap = false;
3237 u32 action = 0;
3238 int err, i;
3239
3240 if (!flow_action_has_entries(flow_action))
3241 return -EINVAL;
3242
3243 flow_action_for_each(i, act, flow_action) {
3244 switch (act->id) {
3245 case FLOW_ACTION_DROP:
3246 action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
3247 MLX5_FLOW_CONTEXT_ACTION_COUNT;
3248 break;
3249 case FLOW_ACTION_MANGLE:
3250 case FLOW_ACTION_ADD:
3251 err = parse_tc_pedit_action(priv, act, MLX5_FLOW_NAMESPACE_FDB,
3252 parse_attr, hdrs, extack);
3253 if (err)
3254 return err;
3255
3256 action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
3257 attr->split_count = attr->out_count;
3258 break;
3259 case FLOW_ACTION_CSUM:
3260 if (csum_offload_supported(priv, action,
3261 act->csum_flags, extack))
3262 break;
3263
3264 return -EOPNOTSUPP;
3265 case FLOW_ACTION_REDIRECT:
3266 case FLOW_ACTION_MIRRED: {
3267 struct mlx5e_priv *out_priv;
3268 struct net_device *out_dev;
3269
3270 out_dev = act->dev;
3271 if (!out_dev) {
3272 /* out_dev is NULL when filters with
3273 * non-existing mirred device are replayed to
3274 * the driver.
3275 */
3276 return -EINVAL;
3277 }
3278
3279 if (ft_flow && out_dev == priv->netdev) {
3280 /* Ignore forward to self rules generated
3281 * by adding both mlx5 devs to the flow table
3282 * block on a normal nft offload setup.
3283 */
3284 return -EOPNOTSUPP;
3285 }
3286
3287 if (attr->out_count >= MLX5_MAX_FLOW_FWD_VPORTS) {
3288 NL_SET_ERR_MSG_MOD(extack,
3289 "can't support more output ports, can't offload forwarding");
3290 pr_err("can't support more than %d output ports, can't offload forwarding\n",
3291 attr->out_count);
3292 return -EOPNOTSUPP;
3293 }
3294
3295 action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
3296 MLX5_FLOW_CONTEXT_ACTION_COUNT;
3297 if (encap) {
3298 parse_attr->mirred_ifindex[attr->out_count] =
3299 out_dev->ifindex;
3300 parse_attr->tun_info[attr->out_count] = dup_tun_info(info);
3301 if (!parse_attr->tun_info[attr->out_count])
3302 return -ENOMEM;
3303 encap = false;
3304 attr->dests[attr->out_count].flags |=
3305 MLX5_ESW_DEST_ENCAP;
3306 attr->out_count++;
3307 /* attr->dests[].rep is resolved when we
3308 * handle encap
3309 */
3310 } else if (netdev_port_same_parent_id(priv->netdev, out_dev)) {
3311 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3312 struct net_device *uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH);
3313 struct net_device *uplink_upper;
3314
3315 rcu_read_lock();
3316 uplink_upper =
3317 netdev_master_upper_dev_get_rcu(uplink_dev);
3318 if (uplink_upper &&
3319 netif_is_lag_master(uplink_upper) &&
3320 uplink_upper == out_dev)
3321 out_dev = uplink_dev;
3322 rcu_read_unlock();
3323
3324 if (is_vlan_dev(out_dev)) {
3325 err = add_vlan_push_action(priv, attr,
3326 &out_dev,
3327 &action);
3328 if (err)
3329 return err;
3330 }
3331
3332 if (is_vlan_dev(parse_attr->filter_dev)) {
3333 err = add_vlan_pop_action(priv, attr,
3334 &action);
3335 if (err)
3336 return err;
3337 }
3338
3339 if (!mlx5e_is_valid_eswitch_fwd_dev(priv, out_dev)) {
3340 NL_SET_ERR_MSG_MOD(extack,
3341 "devices are not on same switch HW, can't offload forwarding");
3342 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
3343 priv->netdev->name, out_dev->name);
3344 return -EOPNOTSUPP;
3345 }
3346
3347 out_priv = netdev_priv(out_dev);
3348 rpriv = out_priv->ppriv;
3349 attr->dests[attr->out_count].rep = rpriv->rep;
3350 attr->dests[attr->out_count].mdev = out_priv->mdev;
3351 attr->out_count++;
3352 } else if (parse_attr->filter_dev != priv->netdev) {
3353 /* All mlx5 devices are called to configure
3354 * high level device filters. Therefore, the
3355 * *attempt* to install a filter on invalid
3356 * eswitch should not trigger an explicit error
3357 */
3358 return -EINVAL;
3359 } else {
3360 NL_SET_ERR_MSG_MOD(extack,
3361 "devices are not on same switch HW, can't offload forwarding");
3362 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
3363 priv->netdev->name, out_dev->name);
3364 return -EINVAL;
3365 }
3366 }
3367 break;
3368 case FLOW_ACTION_TUNNEL_ENCAP:
3369 info = act->tunnel;
3370 if (info)
3371 encap = true;
3372 else
3373 return -EOPNOTSUPP;
3374
3375 break;
3376 case FLOW_ACTION_VLAN_PUSH:
3377 case FLOW_ACTION_VLAN_POP:
3378 if (act->id == FLOW_ACTION_VLAN_PUSH &&
3379 (action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP)) {
3380 /* Replace vlan pop+push with vlan modify */
3381 action &= ~MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
3382 err = add_vlan_rewrite_action(priv,
3383 MLX5_FLOW_NAMESPACE_FDB,
3384 act, parse_attr, hdrs,
3385 &action, extack);
3386 } else {
3387 err = parse_tc_vlan_action(priv, act, attr, &action);
3388 }
3389 if (err)
3390 return err;
3391
3392 attr->split_count = attr->out_count;
3393 break;
3394 case FLOW_ACTION_VLAN_MANGLE:
3395 err = add_vlan_rewrite_action(priv,
3396 MLX5_FLOW_NAMESPACE_FDB,
3397 act, parse_attr, hdrs,
3398 &action, extack);
3399 if (err)
3400 return err;
3401
3402 attr->split_count = attr->out_count;
3403 break;
3404 case FLOW_ACTION_TUNNEL_DECAP:
3405 action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
3406 break;
3407 case FLOW_ACTION_GOTO: {
3408 u32 dest_chain = act->chain_index;
3409 u32 max_chain = mlx5_eswitch_get_chain_range(esw);
3410
3411 if (ft_flow) {
3412 NL_SET_ERR_MSG_MOD(extack, "Goto action is not supported");
3413 return -EOPNOTSUPP;
3414 }
3415 if (dest_chain <= attr->chain) {
3416 NL_SET_ERR_MSG(extack, "Goto earlier chain isn't supported");
3417 return -EOPNOTSUPP;
3418 }
3419 if (dest_chain > max_chain) {
3420 NL_SET_ERR_MSG(extack, "Requested destination chain is out of supported range");
3421 return -EOPNOTSUPP;
3422 }
3423 action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
3424 attr->dest_chain = dest_chain;
3425 break;
3426 }
3427 default:
3428 NL_SET_ERR_MSG_MOD(extack, "The offload action is not supported");
3429 return -EOPNOTSUPP;
3430 }
3431 }
3432
3433 if (MLX5_CAP_GEN(esw->dev, prio_tag_required) &&
3434 action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) {
3435 /* For prio tag mode, replace vlan pop with rewrite vlan prio
3436 * tag rewrite.
3437 */
3438 action &= ~MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
3439 err = add_vlan_prio_tag_rewrite_action(priv, parse_attr, hdrs,
3440 &action, extack);
3441 if (err)
3442 return err;
3443 }
3444
3445 if (hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits ||
3446 hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) {
3447 err = alloc_tc_pedit_action(priv, MLX5_FLOW_NAMESPACE_FDB,
3448 parse_attr, hdrs, &action, extack);
3449 if (err)
3450 return err;
3451 /* in case all pedit actions are skipped, remove the MOD_HDR
3452 * flag. we might have set split_count either by pedit or
3453 * pop/push. if there is no pop/push either, reset it too.
3454 */
3455 if (parse_attr->num_mod_hdr_actions == 0) {
3456 action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
3457 kfree(parse_attr->mod_hdr_actions);
3458 if (!((action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) ||
3459 (action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH)))
3460 attr->split_count = 0;
3461 }
3462 }
3463
3464 attr->action = action;
3465 if (!actions_match_supported(priv, flow_action, parse_attr, flow, extack))
3466 return -EOPNOTSUPP;
3467
3468 if (attr->dest_chain) {
3469 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
3470 NL_SET_ERR_MSG(extack, "Mirroring goto chain rules isn't supported");
3471 return -EOPNOTSUPP;
3472 }
3473 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
3474 }
3475
3476 if (!(attr->action &
3477 (MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_DROP))) {
3478 NL_SET_ERR_MSG(extack, "Rule must have at least one forward/drop action");
3479 return -EOPNOTSUPP;
3480 }
3481
3482 if (attr->split_count > 0 && !mlx5_esw_has_fwd_fdb(priv->mdev)) {
3483 NL_SET_ERR_MSG_MOD(extack,
3484 "current firmware doesn't support split rule for port mirroring");
3485 netdev_warn_once(priv->netdev, "current firmware doesn't support split rule for port mirroring\n");
3486 return -EOPNOTSUPP;
3487 }
3488
3489 return 0;
3490}
3491
3492static void get_flags(int flags, unsigned long *flow_flags)
3493{
3494 unsigned long __flow_flags = 0;
3495
3496 if (flags & MLX5_TC_FLAG(INGRESS))
3497 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_INGRESS);
3498 if (flags & MLX5_TC_FLAG(EGRESS))
3499 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_EGRESS);
3500
3501 if (flags & MLX5_TC_FLAG(ESW_OFFLOAD))
3502 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH);
3503 if (flags & MLX5_TC_FLAG(NIC_OFFLOAD))
3504 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC);
3505 if (flags & MLX5_TC_FLAG(FT_OFFLOAD))
3506 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_FT);
3507
3508 *flow_flags = __flow_flags;
3509}
3510
3511static const struct rhashtable_params tc_ht_params = {
3512 .head_offset = offsetof(struct mlx5e_tc_flow, node),
3513 .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
3514 .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
3515 .automatic_shrinking = true,
3516};
3517
3518static struct rhashtable *get_tc_ht(struct mlx5e_priv *priv,
3519 unsigned long flags)
3520{
3521 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3522 struct mlx5e_rep_priv *uplink_rpriv;
3523
3524 if (flags & MLX5_TC_FLAG(ESW_OFFLOAD)) {
3525 uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
3526 return &uplink_rpriv->uplink_priv.tc_ht;
3527 } else /* NIC offload */
3528 return &priv->fs.tc.ht;
3529}
3530
3531static bool is_peer_flow_needed(struct mlx5e_tc_flow *flow)
3532{
3533 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
3534 bool is_rep_ingress = attr->in_rep->vport != MLX5_VPORT_UPLINK &&
3535 flow_flag_test(flow, INGRESS);
3536 bool act_is_encap = !!(attr->action &
3537 MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT);
3538 bool esw_paired = mlx5_devcom_is_paired(attr->in_mdev->priv.devcom,
3539 MLX5_DEVCOM_ESW_OFFLOADS);
3540
3541 if (!esw_paired)
3542 return false;
3543
3544 if ((mlx5_lag_is_sriov(attr->in_mdev) ||
3545 mlx5_lag_is_multipath(attr->in_mdev)) &&
3546 (is_rep_ingress || act_is_encap))
3547 return true;
3548
3549 return false;
3550}
3551
3552static int
3553mlx5e_alloc_flow(struct mlx5e_priv *priv, int attr_size,
3554 struct flow_cls_offload *f, unsigned long flow_flags,
3555 struct mlx5e_tc_flow_parse_attr **__parse_attr,
3556 struct mlx5e_tc_flow **__flow)
3557{
3558 struct mlx5e_tc_flow_parse_attr *parse_attr;
3559 struct mlx5e_tc_flow *flow;
3560 int out_index, err;
3561
3562 flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
3563 parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
3564 if (!parse_attr || !flow) {
3565 err = -ENOMEM;
3566 goto err_free;
3567 }
3568
3569 flow->cookie = f->cookie;
3570 flow->flags = flow_flags;
3571 flow->priv = priv;
3572 for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++)
3573 INIT_LIST_HEAD(&flow->encaps[out_index].list);
3574 INIT_LIST_HEAD(&flow->mod_hdr);
3575 INIT_LIST_HEAD(&flow->hairpin);
3576 refcount_set(&flow->refcnt, 1);
3577 init_completion(&flow->init_done);
3578
3579 *__flow = flow;
3580 *__parse_attr = parse_attr;
3581
3582 return 0;
3583
3584err_free:
3585 kfree(flow);
3586 kvfree(parse_attr);
3587 return err;
3588}
3589
3590static void
3591mlx5e_flow_esw_attr_init(struct mlx5_esw_flow_attr *esw_attr,
3592 struct mlx5e_priv *priv,
3593 struct mlx5e_tc_flow_parse_attr *parse_attr,
3594 struct flow_cls_offload *f,
3595 struct mlx5_eswitch_rep *in_rep,
3596 struct mlx5_core_dev *in_mdev)
3597{
3598 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3599
3600 esw_attr->parse_attr = parse_attr;
3601 esw_attr->chain = f->common.chain_index;
3602 esw_attr->prio = f->common.prio;
3603
3604 esw_attr->in_rep = in_rep;
3605 esw_attr->in_mdev = in_mdev;
3606
3607 if (MLX5_CAP_ESW(esw->dev, counter_eswitch_affinity) ==
3608 MLX5_COUNTER_SOURCE_ESWITCH)
3609 esw_attr->counter_dev = in_mdev;
3610 else
3611 esw_attr->counter_dev = priv->mdev;
3612}
3613
3614static struct mlx5e_tc_flow *
3615__mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
3616 struct flow_cls_offload *f,
3617 unsigned long flow_flags,
3618 struct net_device *filter_dev,
3619 struct mlx5_eswitch_rep *in_rep,
3620 struct mlx5_core_dev *in_mdev)
3621{
3622 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
3623 struct netlink_ext_ack *extack = f->common.extack;
3624 struct mlx5e_tc_flow_parse_attr *parse_attr;
3625 struct mlx5e_tc_flow *flow;
3626 int attr_size, err;
3627
3628 flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH);
3629 attr_size = sizeof(struct mlx5_esw_flow_attr);
3630 err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
3631 &parse_attr, &flow);
3632 if (err)
3633 goto out;
3634
3635 parse_attr->filter_dev = filter_dev;
3636 mlx5e_flow_esw_attr_init(flow->esw_attr,
3637 priv, parse_attr,
3638 f, in_rep, in_mdev);
3639
3640 err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
3641 f, filter_dev);
3642 if (err)
3643 goto err_free;
3644
3645 err = parse_tc_fdb_actions(priv, &rule->action, flow, extack);
3646 if (err)
3647 goto err_free;
3648
3649 err = mlx5e_tc_add_fdb_flow(priv, flow, extack);
3650 complete_all(&flow->init_done);
3651 if (err) {
3652 if (!(err == -ENETUNREACH && mlx5_lag_is_multipath(in_mdev)))
3653 goto err_free;
3654
3655 add_unready_flow(flow);
3656 }
3657
3658 return flow;
3659
3660err_free:
3661 mlx5e_flow_put(priv, flow);
3662out:
3663 return ERR_PTR(err);
3664}
3665
3666static int mlx5e_tc_add_fdb_peer_flow(struct flow_cls_offload *f,
3667 struct mlx5e_tc_flow *flow,
3668 unsigned long flow_flags)
3669{
3670 struct mlx5e_priv *priv = flow->priv, *peer_priv;
3671 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch, *peer_esw;
3672 struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
3673 struct mlx5e_tc_flow_parse_attr *parse_attr;
3674 struct mlx5e_rep_priv *peer_urpriv;
3675 struct mlx5e_tc_flow *peer_flow;
3676 struct mlx5_core_dev *in_mdev;
3677 int err = 0;
3678
3679 peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
3680 if (!peer_esw)
3681 return -ENODEV;
3682
3683 peer_urpriv = mlx5_eswitch_get_uplink_priv(peer_esw, REP_ETH);
3684 peer_priv = netdev_priv(peer_urpriv->netdev);
3685
3686 /* in_mdev is assigned of which the packet originated from.
3687 * So packets redirected to uplink use the same mdev of the
3688 * original flow and packets redirected from uplink use the
3689 * peer mdev.
3690 */
3691 if (flow->esw_attr->in_rep->vport == MLX5_VPORT_UPLINK)
3692 in_mdev = peer_priv->mdev;
3693 else
3694 in_mdev = priv->mdev;
3695
3696 parse_attr = flow->esw_attr->parse_attr;
3697 peer_flow = __mlx5e_add_fdb_flow(peer_priv, f, flow_flags,
3698 parse_attr->filter_dev,
3699 flow->esw_attr->in_rep, in_mdev);
3700 if (IS_ERR(peer_flow)) {
3701 err = PTR_ERR(peer_flow);
3702 goto out;
3703 }
3704
3705 flow->peer_flow = peer_flow;
3706 flow_flag_set(flow, DUP);
3707 mutex_lock(&esw->offloads.peer_mutex);
3708 list_add_tail(&flow->peer, &esw->offloads.peer_flows);
3709 mutex_unlock(&esw->offloads.peer_mutex);
3710
3711out:
3712 mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
3713 return err;
3714}
3715
3716static int
3717mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
3718 struct flow_cls_offload *f,
3719 unsigned long flow_flags,
3720 struct net_device *filter_dev,
3721 struct mlx5e_tc_flow **__flow)
3722{
3723 struct mlx5e_rep_priv *rpriv = priv->ppriv;
3724 struct mlx5_eswitch_rep *in_rep = rpriv->rep;
3725 struct mlx5_core_dev *in_mdev = priv->mdev;
3726 struct mlx5e_tc_flow *flow;
3727 int err;
3728
3729 flow = __mlx5e_add_fdb_flow(priv, f, flow_flags, filter_dev, in_rep,
3730 in_mdev);
3731 if (IS_ERR(flow))
3732 return PTR_ERR(flow);
3733
3734 if (is_peer_flow_needed(flow)) {
3735 err = mlx5e_tc_add_fdb_peer_flow(f, flow, flow_flags);
3736 if (err) {
3737 mlx5e_tc_del_fdb_flow(priv, flow);
3738 goto out;
3739 }
3740 }
3741
3742 *__flow = flow;
3743
3744 return 0;
3745
3746out:
3747 return err;
3748}
3749
3750static int
3751mlx5e_add_nic_flow(struct mlx5e_priv *priv,
3752 struct flow_cls_offload *f,
3753 unsigned long flow_flags,
3754 struct net_device *filter_dev,
3755 struct mlx5e_tc_flow **__flow)
3756{
3757 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
3758 struct netlink_ext_ack *extack = f->common.extack;
3759 struct mlx5e_tc_flow_parse_attr *parse_attr;
3760 struct mlx5e_tc_flow *flow;
3761 int attr_size, err;
3762
3763 /* multi-chain not supported for NIC rules */
3764 if (!tc_cls_can_offload_and_chain0(priv->netdev, &f->common))
3765 return -EOPNOTSUPP;
3766
3767 flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC);
3768 attr_size = sizeof(struct mlx5_nic_flow_attr);
3769 err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
3770 &parse_attr, &flow);
3771 if (err)
3772 goto out;
3773
3774 parse_attr->filter_dev = filter_dev;
3775 err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
3776 f, filter_dev);
3777 if (err)
3778 goto err_free;
3779
3780 err = parse_tc_nic_actions(priv, &rule->action, parse_attr, flow, extack);
3781 if (err)
3782 goto err_free;
3783
3784 err = mlx5e_tc_add_nic_flow(priv, parse_attr, flow, extack);
3785 if (err)
3786 goto err_free;
3787
3788 flow_flag_set(flow, OFFLOADED);
3789 kvfree(parse_attr);
3790 *__flow = flow;
3791
3792 return 0;
3793
3794err_free:
3795 mlx5e_flow_put(priv, flow);
3796 kvfree(parse_attr);
3797out:
3798 return err;
3799}
3800
3801static int
3802mlx5e_tc_add_flow(struct mlx5e_priv *priv,
3803 struct flow_cls_offload *f,
3804 unsigned long flags,
3805 struct net_device *filter_dev,
3806 struct mlx5e_tc_flow **flow)
3807{
3808 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3809 unsigned long flow_flags;
3810 int err;
3811
3812 get_flags(flags, &flow_flags);
3813
3814 if (!tc_can_offload_extack(priv->netdev, f->common.extack))
3815 return -EOPNOTSUPP;
3816
3817 if (esw && esw->mode == MLX5_ESWITCH_OFFLOADS)
3818 err = mlx5e_add_fdb_flow(priv, f, flow_flags,
3819 filter_dev, flow);
3820 else
3821 err = mlx5e_add_nic_flow(priv, f, flow_flags,
3822 filter_dev, flow);
3823
3824 return err;
3825}
3826
3827int mlx5e_configure_flower(struct net_device *dev, struct mlx5e_priv *priv,
3828 struct flow_cls_offload *f, unsigned long flags)
3829{
3830 struct netlink_ext_ack *extack = f->common.extack;
3831 struct rhashtable *tc_ht = get_tc_ht(priv, flags);
3832 struct mlx5e_tc_flow *flow;
3833 int err = 0;
3834
3835 rcu_read_lock();
3836 flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params);
3837 rcu_read_unlock();
3838 if (flow) {
3839 NL_SET_ERR_MSG_MOD(extack,
3840 "flow cookie already exists, ignoring");
3841 netdev_warn_once(priv->netdev,
3842 "flow cookie %lx already exists, ignoring\n",
3843 f->cookie);
3844 err = -EEXIST;
3845 goto out;
3846 }
3847
3848 trace_mlx5e_configure_flower(f);
3849 err = mlx5e_tc_add_flow(priv, f, flags, dev, &flow);
3850 if (err)
3851 goto out;
3852
3853 err = rhashtable_lookup_insert_fast(tc_ht, &flow->node, tc_ht_params);
3854 if (err)
3855 goto err_free;
3856
3857 return 0;
3858
3859err_free:
3860 mlx5e_flow_put(priv, flow);
3861out:
3862 return err;
3863}
3864
3865static bool same_flow_direction(struct mlx5e_tc_flow *flow, int flags)
3866{
3867 bool dir_ingress = !!(flags & MLX5_TC_FLAG(INGRESS));
3868 bool dir_egress = !!(flags & MLX5_TC_FLAG(EGRESS));
3869
3870 return flow_flag_test(flow, INGRESS) == dir_ingress &&
3871 flow_flag_test(flow, EGRESS) == dir_egress;
3872}
3873
3874int mlx5e_delete_flower(struct net_device *dev, struct mlx5e_priv *priv,
3875 struct flow_cls_offload *f, unsigned long flags)
3876{
3877 struct rhashtable *tc_ht = get_tc_ht(priv, flags);
3878 struct mlx5e_tc_flow *flow;
3879 int err;
3880
3881 rcu_read_lock();
3882 flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params);
3883 if (!flow || !same_flow_direction(flow, flags)) {
3884 err = -EINVAL;
3885 goto errout;
3886 }
3887
3888 /* Only delete the flow if it doesn't have MLX5E_TC_FLOW_DELETED flag
3889 * set.
3890 */
3891 if (flow_flag_test_and_set(flow, DELETED)) {
3892 err = -EINVAL;
3893 goto errout;
3894 }
3895 rhashtable_remove_fast(tc_ht, &flow->node, tc_ht_params);
3896 rcu_read_unlock();
3897
3898 trace_mlx5e_delete_flower(f);
3899 mlx5e_flow_put(priv, flow);
3900
3901 return 0;
3902
3903errout:
3904 rcu_read_unlock();
3905 return err;
3906}
3907
3908int mlx5e_stats_flower(struct net_device *dev, struct mlx5e_priv *priv,
3909 struct flow_cls_offload *f, unsigned long flags)
3910{
3911 struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
3912 struct rhashtable *tc_ht = get_tc_ht(priv, flags);
3913 struct mlx5_eswitch *peer_esw;
3914 struct mlx5e_tc_flow *flow;
3915 struct mlx5_fc *counter;
3916 u64 lastuse = 0;
3917 u64 packets = 0;
3918 u64 bytes = 0;
3919 int err = 0;
3920
3921 rcu_read_lock();
3922 flow = mlx5e_flow_get(rhashtable_lookup(tc_ht, &f->cookie,
3923 tc_ht_params));
3924 rcu_read_unlock();
3925 if (IS_ERR(flow))
3926 return PTR_ERR(flow);
3927
3928 if (!same_flow_direction(flow, flags)) {
3929 err = -EINVAL;
3930 goto errout;
3931 }
3932
3933 if (mlx5e_is_offloaded_flow(flow)) {
3934 counter = mlx5e_tc_get_counter(flow);
3935 if (!counter)
3936 goto errout;
3937
3938 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
3939 }
3940
3941 /* Under multipath it's possible for one rule to be currently
3942 * un-offloaded while the other rule is offloaded.
3943 */
3944 peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
3945 if (!peer_esw)
3946 goto out;
3947
3948 if (flow_flag_test(flow, DUP) &&
3949 flow_flag_test(flow->peer_flow, OFFLOADED)) {
3950 u64 bytes2;
3951 u64 packets2;
3952 u64 lastuse2;
3953
3954 counter = mlx5e_tc_get_counter(flow->peer_flow);
3955 if (!counter)
3956 goto no_peer_counter;
3957 mlx5_fc_query_cached(counter, &bytes2, &packets2, &lastuse2);
3958
3959 bytes += bytes2;
3960 packets += packets2;
3961 lastuse = max_t(u64, lastuse, lastuse2);
3962 }
3963
3964no_peer_counter:
3965 mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
3966out:
3967 flow_stats_update(&f->stats, bytes, packets, lastuse);
3968 trace_mlx5e_stats_flower(f);
3969errout:
3970 mlx5e_flow_put(priv, flow);
3971 return err;
3972}
3973
3974static int apply_police_params(struct mlx5e_priv *priv, u32 rate,
3975 struct netlink_ext_ack *extack)
3976{
3977 struct mlx5e_rep_priv *rpriv = priv->ppriv;
3978 struct mlx5_eswitch *esw;
3979 u16 vport_num;
3980 u32 rate_mbps;
3981 int err;
3982
3983 esw = priv->mdev->priv.eswitch;
3984 /* rate is given in bytes/sec.
3985 * First convert to bits/sec and then round to the nearest mbit/secs.
3986 * mbit means million bits.
3987 * Moreover, if rate is non zero we choose to configure to a minimum of
3988 * 1 mbit/sec.
3989 */
3990 rate_mbps = rate ? max_t(u32, (rate * 8 + 500000) / 1000000, 1) : 0;
3991 vport_num = rpriv->rep->vport;
3992
3993 err = mlx5_esw_modify_vport_rate(esw, vport_num, rate_mbps);
3994 if (err)
3995 NL_SET_ERR_MSG_MOD(extack, "failed applying action to hardware");
3996
3997 return err;
3998}
3999
4000static int scan_tc_matchall_fdb_actions(struct mlx5e_priv *priv,
4001 struct flow_action *flow_action,
4002 struct netlink_ext_ack *extack)
4003{
4004 struct mlx5e_rep_priv *rpriv = priv->ppriv;
4005 const struct flow_action_entry *act;
4006 int err;
4007 int i;
4008
4009 if (!flow_action_has_entries(flow_action)) {
4010 NL_SET_ERR_MSG_MOD(extack, "matchall called with no action");
4011 return -EINVAL;
4012 }
4013
4014 if (!flow_offload_has_one_action(flow_action)) {
4015 NL_SET_ERR_MSG_MOD(extack, "matchall policing support only a single action");
4016 return -EOPNOTSUPP;
4017 }
4018
4019 flow_action_for_each(i, act, flow_action) {
4020 switch (act->id) {
4021 case FLOW_ACTION_POLICE:
4022 err = apply_police_params(priv, act->police.rate_bytes_ps, extack);
4023 if (err)
4024 return err;
4025
4026 rpriv->prev_vf_vport_stats = priv->stats.vf_vport;
4027 break;
4028 default:
4029 NL_SET_ERR_MSG_MOD(extack, "mlx5 supports only police action for matchall");
4030 return -EOPNOTSUPP;
4031 }
4032 }
4033
4034 return 0;
4035}
4036
4037int mlx5e_tc_configure_matchall(struct mlx5e_priv *priv,
4038 struct tc_cls_matchall_offload *ma)
4039{
4040 struct netlink_ext_ack *extack = ma->common.extack;
4041
4042 if (ma->common.prio != 1) {
4043 NL_SET_ERR_MSG_MOD(extack, "only priority 1 is supported");
4044 return -EINVAL;
4045 }
4046
4047 return scan_tc_matchall_fdb_actions(priv, &ma->rule->action, extack);
4048}
4049
4050int mlx5e_tc_delete_matchall(struct mlx5e_priv *priv,
4051 struct tc_cls_matchall_offload *ma)
4052{
4053 struct netlink_ext_ack *extack = ma->common.extack;
4054
4055 return apply_police_params(priv, 0, extack);
4056}
4057
4058void mlx5e_tc_stats_matchall(struct mlx5e_priv *priv,
4059 struct tc_cls_matchall_offload *ma)
4060{
4061 struct mlx5e_rep_priv *rpriv = priv->ppriv;
4062 struct rtnl_link_stats64 cur_stats;
4063 u64 dbytes;
4064 u64 dpkts;
4065
4066 cur_stats = priv->stats.vf_vport;
4067 dpkts = cur_stats.rx_packets - rpriv->prev_vf_vport_stats.rx_packets;
4068 dbytes = cur_stats.rx_bytes - rpriv->prev_vf_vport_stats.rx_bytes;
4069 rpriv->prev_vf_vport_stats = cur_stats;
4070 flow_stats_update(&ma->stats, dpkts, dbytes, jiffies);
4071}
4072
4073static void mlx5e_tc_hairpin_update_dead_peer(struct mlx5e_priv *priv,
4074 struct mlx5e_priv *peer_priv)
4075{
4076 struct mlx5_core_dev *peer_mdev = peer_priv->mdev;
4077 struct mlx5e_hairpin_entry *hpe, *tmp;
4078 LIST_HEAD(init_wait_list);
4079 u16 peer_vhca_id;
4080 int bkt;
4081
4082 if (!same_hw_devs(priv, peer_priv))
4083 return;
4084
4085 peer_vhca_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
4086
4087 mutex_lock(&priv->fs.tc.hairpin_tbl_lock);
4088 hash_for_each(priv->fs.tc.hairpin_tbl, bkt, hpe, hairpin_hlist)
4089 if (refcount_inc_not_zero(&hpe->refcnt))
4090 list_add(&hpe->dead_peer_wait_list, &init_wait_list);
4091 mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
4092
4093 list_for_each_entry_safe(hpe, tmp, &init_wait_list, dead_peer_wait_list) {
4094 wait_for_completion(&hpe->res_ready);
4095 if (!IS_ERR_OR_NULL(hpe->hp) && hpe->peer_vhca_id == peer_vhca_id)
4096 hpe->hp->pair->peer_gone = true;
4097
4098 mlx5e_hairpin_put(priv, hpe);
4099 }
4100}
4101
4102static int mlx5e_tc_netdev_event(struct notifier_block *this,
4103 unsigned long event, void *ptr)
4104{
4105 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
4106 struct mlx5e_flow_steering *fs;
4107 struct mlx5e_priv *peer_priv;
4108 struct mlx5e_tc_table *tc;
4109 struct mlx5e_priv *priv;
4110
4111 if (ndev->netdev_ops != &mlx5e_netdev_ops ||
4112 event != NETDEV_UNREGISTER ||
4113 ndev->reg_state == NETREG_REGISTERED)
4114 return NOTIFY_DONE;
4115
4116 tc = container_of(this, struct mlx5e_tc_table, netdevice_nb);
4117 fs = container_of(tc, struct mlx5e_flow_steering, tc);
4118 priv = container_of(fs, struct mlx5e_priv, fs);
4119 peer_priv = netdev_priv(ndev);
4120 if (priv == peer_priv ||
4121 !(priv->netdev->features & NETIF_F_HW_TC))
4122 return NOTIFY_DONE;
4123
4124 mlx5e_tc_hairpin_update_dead_peer(priv, peer_priv);
4125
4126 return NOTIFY_DONE;
4127}
4128
4129int mlx5e_tc_nic_init(struct mlx5e_priv *priv)
4130{
4131 struct mlx5e_tc_table *tc = &priv->fs.tc;
4132 int err;
4133
4134 mutex_init(&tc->t_lock);
4135 mutex_init(&tc->mod_hdr.lock);
4136 hash_init(tc->mod_hdr.hlist);
4137 mutex_init(&tc->hairpin_tbl_lock);
4138 hash_init(tc->hairpin_tbl);
4139
4140 err = rhashtable_init(&tc->ht, &tc_ht_params);
4141 if (err)
4142 return err;
4143
4144 tc->netdevice_nb.notifier_call = mlx5e_tc_netdev_event;
4145 if (register_netdevice_notifier(&tc->netdevice_nb)) {
4146 tc->netdevice_nb.notifier_call = NULL;
4147 mlx5_core_warn(priv->mdev, "Failed to register netdev notifier\n");
4148 }
4149
4150 return err;
4151}
4152
4153static void _mlx5e_tc_del_flow(void *ptr, void *arg)
4154{
4155 struct mlx5e_tc_flow *flow = ptr;
4156 struct mlx5e_priv *priv = flow->priv;
4157
4158 mlx5e_tc_del_flow(priv, flow);
4159 kfree(flow);
4160}
4161
4162void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv)
4163{
4164 struct mlx5e_tc_table *tc = &priv->fs.tc;
4165
4166 if (tc->netdevice_nb.notifier_call)
4167 unregister_netdevice_notifier(&tc->netdevice_nb);
4168
4169 mutex_destroy(&tc->mod_hdr.lock);
4170 mutex_destroy(&tc->hairpin_tbl_lock);
4171
4172 rhashtable_destroy(&tc->ht);
4173
4174 if (!IS_ERR_OR_NULL(tc->t)) {
4175 mlx5_destroy_flow_table(tc->t);
4176 tc->t = NULL;
4177 }
4178 mutex_destroy(&tc->t_lock);
4179}
4180
4181int mlx5e_tc_esw_init(struct rhashtable *tc_ht)
4182{
4183 return rhashtable_init(tc_ht, &tc_ht_params);
4184}
4185
4186void mlx5e_tc_esw_cleanup(struct rhashtable *tc_ht)
4187{
4188 rhashtable_free_and_destroy(tc_ht, _mlx5e_tc_del_flow, NULL);
4189}
4190
4191int mlx5e_tc_num_filters(struct mlx5e_priv *priv, unsigned long flags)
4192{
4193 struct rhashtable *tc_ht = get_tc_ht(priv, flags);
4194
4195 return atomic_read(&tc_ht->nelems);
4196}
4197
4198void mlx5e_tc_clean_fdb_peer_flows(struct mlx5_eswitch *esw)
4199{
4200 struct mlx5e_tc_flow *flow, *tmp;
4201
4202 list_for_each_entry_safe(flow, tmp, &esw->offloads.peer_flows, peer)
4203 __mlx5e_tc_del_fdb_peer_flow(flow);
4204}
4205
4206void mlx5e_tc_reoffload_flows_work(struct work_struct *work)
4207{
4208 struct mlx5_rep_uplink_priv *rpriv =
4209 container_of(work, struct mlx5_rep_uplink_priv,
4210 reoffload_flows_work);
4211 struct mlx5e_tc_flow *flow, *tmp;
4212
4213 mutex_lock(&rpriv->unready_flows_lock);
4214 list_for_each_entry_safe(flow, tmp, &rpriv->unready_flows, unready) {
4215 if (!mlx5e_tc_add_fdb_flow(flow->priv, flow, NULL))
4216 unready_flow_del(flow);
4217 }
4218 mutex_unlock(&rpriv->unready_flows_lock);
4219}
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