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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 <net/tc_act/tc_mirred.h>
42#include <net/tc_act/tc_vlan.h>
43#include <net/tc_act/tc_tunnel_key.h>
44#include <net/tc_act/tc_pedit.h>
45#include <net/tc_act/tc_csum.h>
46#include <net/arp.h>
47#include <net/ipv6_stubs.h>
48#include "en.h"
49#include "en_rep.h"
50#include "en_tc.h"
51#include "eswitch.h"
52#include "fs_core.h"
53#include "en/port.h"
54#include "en/tc_tun.h"
55#include "lib/devcom.h"
56#include "lib/geneve.h"
57
58struct mlx5_nic_flow_attr {
59 u32 action;
60 u32 flow_tag;
61 u32 mod_hdr_id;
62 u32 hairpin_tirn;
63 u8 match_level;
64 struct mlx5_flow_table *hairpin_ft;
65 struct mlx5_fc *counter;
66};
67
68#define MLX5E_TC_FLOW_BASE (MLX5E_TC_LAST_EXPORTED_BIT + 1)
69
70enum {
71 MLX5E_TC_FLOW_INGRESS = MLX5E_TC_INGRESS,
72 MLX5E_TC_FLOW_EGRESS = MLX5E_TC_EGRESS,
73 MLX5E_TC_FLOW_ESWITCH = MLX5E_TC_ESW_OFFLOAD,
74 MLX5E_TC_FLOW_NIC = MLX5E_TC_NIC_OFFLOAD,
75 MLX5E_TC_FLOW_OFFLOADED = BIT(MLX5E_TC_FLOW_BASE),
76 MLX5E_TC_FLOW_HAIRPIN = BIT(MLX5E_TC_FLOW_BASE + 1),
77 MLX5E_TC_FLOW_HAIRPIN_RSS = BIT(MLX5E_TC_FLOW_BASE + 2),
78 MLX5E_TC_FLOW_SLOW = BIT(MLX5E_TC_FLOW_BASE + 3),
79 MLX5E_TC_FLOW_DUP = BIT(MLX5E_TC_FLOW_BASE + 4),
80 MLX5E_TC_FLOW_NOT_READY = BIT(MLX5E_TC_FLOW_BASE + 5),
81};
82
83#define MLX5E_TC_MAX_SPLITS 1
84
85
86
87
88
89
90
91
92
93
94
95
96
97
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100
101
102struct encap_flow_item {
103 struct list_head list;
104 int index;
105};
106
107struct mlx5e_tc_flow {
108 struct rhash_head node;
109 struct mlx5e_priv *priv;
110 u64 cookie;
111 u16 flags;
112 struct mlx5_flow_handle *rule[MLX5E_TC_MAX_SPLITS + 1];
113
114
115
116
117 struct encap_flow_item encaps[MLX5_MAX_FLOW_FWD_VPORTS];
118 struct mlx5e_tc_flow *peer_flow;
119 struct list_head mod_hdr;
120 struct list_head hairpin;
121 struct list_head peer;
122 struct list_head unready;
123 union {
124 struct mlx5_esw_flow_attr esw_attr[0];
125 struct mlx5_nic_flow_attr nic_attr[0];
126 };
127};
128
129struct mlx5e_tc_flow_parse_attr {
130 const struct ip_tunnel_info *tun_info[MLX5_MAX_FLOW_FWD_VPORTS];
131 struct net_device *filter_dev;
132 struct mlx5_flow_spec spec;
133 int num_mod_hdr_actions;
134 int max_mod_hdr_actions;
135 void *mod_hdr_actions;
136 int mirred_ifindex[MLX5_MAX_FLOW_FWD_VPORTS];
137};
138
139#define MLX5E_TC_TABLE_NUM_GROUPS 4
140#define MLX5E_TC_TABLE_MAX_GROUP_SIZE BIT(16)
141
142struct mlx5e_hairpin {
143 struct mlx5_hairpin *pair;
144
145 struct mlx5_core_dev *func_mdev;
146 struct mlx5e_priv *func_priv;
147 u32 tdn;
148 u32 tirn;
149
150 int num_channels;
151 struct mlx5e_rqt indir_rqt;
152 u32 indir_tirn[MLX5E_NUM_INDIR_TIRS];
153 struct mlx5e_ttc_table ttc;
154};
155
156struct mlx5e_hairpin_entry {
157
158 struct hlist_node hairpin_hlist;
159
160
161 struct list_head flows;
162
163 u16 peer_vhca_id;
164 u8 prio;
165 struct mlx5e_hairpin *hp;
166};
167
168struct mod_hdr_key {
169 int num_actions;
170 void *actions;
171};
172
173struct mlx5e_mod_hdr_entry {
174
175 struct hlist_node mod_hdr_hlist;
176
177
178 struct list_head flows;
179
180 struct mod_hdr_key key;
181
182 u32 mod_hdr_id;
183};
184
185#define MLX5_MH_ACT_SZ MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto)
186
187static inline u32 hash_mod_hdr_info(struct mod_hdr_key *key)
188{
189 return jhash(key->actions,
190 key->num_actions * MLX5_MH_ACT_SZ, 0);
191}
192
193static inline int cmp_mod_hdr_info(struct mod_hdr_key *a,
194 struct mod_hdr_key *b)
195{
196 if (a->num_actions != b->num_actions)
197 return 1;
198
199 return memcmp(a->actions, b->actions, a->num_actions * MLX5_MH_ACT_SZ);
200}
201
202static int mlx5e_attach_mod_hdr(struct mlx5e_priv *priv,
203 struct mlx5e_tc_flow *flow,
204 struct mlx5e_tc_flow_parse_attr *parse_attr)
205{
206 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
207 int num_actions, actions_size, namespace, err;
208 struct mlx5e_mod_hdr_entry *mh;
209 struct mod_hdr_key key;
210 bool found = false;
211 u32 hash_key;
212
213 num_actions = parse_attr->num_mod_hdr_actions;
214 actions_size = MLX5_MH_ACT_SZ * num_actions;
215
216 key.actions = parse_attr->mod_hdr_actions;
217 key.num_actions = num_actions;
218
219 hash_key = hash_mod_hdr_info(&key);
220
221 if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
222 namespace = MLX5_FLOW_NAMESPACE_FDB;
223 hash_for_each_possible(esw->offloads.mod_hdr_tbl, mh,
224 mod_hdr_hlist, hash_key) {
225 if (!cmp_mod_hdr_info(&mh->key, &key)) {
226 found = true;
227 break;
228 }
229 }
230 } else {
231 namespace = MLX5_FLOW_NAMESPACE_KERNEL;
232 hash_for_each_possible(priv->fs.tc.mod_hdr_tbl, mh,
233 mod_hdr_hlist, hash_key) {
234 if (!cmp_mod_hdr_info(&mh->key, &key)) {
235 found = true;
236 break;
237 }
238 }
239 }
240
241 if (found)
242 goto attach_flow;
243
244 mh = kzalloc(sizeof(*mh) + actions_size, GFP_KERNEL);
245 if (!mh)
246 return -ENOMEM;
247
248 mh->key.actions = (void *)mh + sizeof(*mh);
249 memcpy(mh->key.actions, key.actions, actions_size);
250 mh->key.num_actions = num_actions;
251 INIT_LIST_HEAD(&mh->flows);
252
253 err = mlx5_modify_header_alloc(priv->mdev, namespace,
254 mh->key.num_actions,
255 mh->key.actions,
256 &mh->mod_hdr_id);
257 if (err)
258 goto out_err;
259
260 if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
261 hash_add(esw->offloads.mod_hdr_tbl, &mh->mod_hdr_hlist, hash_key);
262 else
263 hash_add(priv->fs.tc.mod_hdr_tbl, &mh->mod_hdr_hlist, hash_key);
264
265attach_flow:
266 list_add(&flow->mod_hdr, &mh->flows);
267 if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
268 flow->esw_attr->mod_hdr_id = mh->mod_hdr_id;
269 else
270 flow->nic_attr->mod_hdr_id = mh->mod_hdr_id;
271
272 return 0;
273
274out_err:
275 kfree(mh);
276 return err;
277}
278
279static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv,
280 struct mlx5e_tc_flow *flow)
281{
282 struct list_head *next = flow->mod_hdr.next;
283
284 list_del(&flow->mod_hdr);
285
286 if (list_empty(next)) {
287 struct mlx5e_mod_hdr_entry *mh;
288
289 mh = list_entry(next, struct mlx5e_mod_hdr_entry, flows);
290
291 mlx5_modify_header_dealloc(priv->mdev, mh->mod_hdr_id);
292 hash_del(&mh->mod_hdr_hlist);
293 kfree(mh);
294 }
295}
296
297static
298struct mlx5_core_dev *mlx5e_hairpin_get_mdev(struct net *net, int ifindex)
299{
300 struct net_device *netdev;
301 struct mlx5e_priv *priv;
302
303 netdev = __dev_get_by_index(net, ifindex);
304 priv = netdev_priv(netdev);
305 return priv->mdev;
306}
307
308static int mlx5e_hairpin_create_transport(struct mlx5e_hairpin *hp)
309{
310 u32 in[MLX5_ST_SZ_DW(create_tir_in)] = {0};
311 void *tirc;
312 int err;
313
314 err = mlx5_core_alloc_transport_domain(hp->func_mdev, &hp->tdn);
315 if (err)
316 goto alloc_tdn_err;
317
318 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
319
320 MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
321 MLX5_SET(tirc, tirc, inline_rqn, hp->pair->rqn[0]);
322 MLX5_SET(tirc, tirc, transport_domain, hp->tdn);
323
324 err = mlx5_core_create_tir(hp->func_mdev, in, MLX5_ST_SZ_BYTES(create_tir_in), &hp->tirn);
325 if (err)
326 goto create_tir_err;
327
328 return 0;
329
330create_tir_err:
331 mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
332alloc_tdn_err:
333 return err;
334}
335
336static void mlx5e_hairpin_destroy_transport(struct mlx5e_hairpin *hp)
337{
338 mlx5_core_destroy_tir(hp->func_mdev, hp->tirn);
339 mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
340}
341
342static void mlx5e_hairpin_fill_rqt_rqns(struct mlx5e_hairpin *hp, void *rqtc)
343{
344 u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE], rqn;
345 struct mlx5e_priv *priv = hp->func_priv;
346 int i, ix, sz = MLX5E_INDIR_RQT_SIZE;
347
348 mlx5e_build_default_indir_rqt(indirection_rqt, sz,
349 hp->num_channels);
350
351 for (i = 0; i < sz; i++) {
352 ix = i;
353 if (priv->rss_params.hfunc == ETH_RSS_HASH_XOR)
354 ix = mlx5e_bits_invert(i, ilog2(sz));
355 ix = indirection_rqt[ix];
356 rqn = hp->pair->rqn[ix];
357 MLX5_SET(rqtc, rqtc, rq_num[i], rqn);
358 }
359}
360
361static int mlx5e_hairpin_create_indirect_rqt(struct mlx5e_hairpin *hp)
362{
363 int inlen, err, sz = MLX5E_INDIR_RQT_SIZE;
364 struct mlx5e_priv *priv = hp->func_priv;
365 struct mlx5_core_dev *mdev = priv->mdev;
366 void *rqtc;
367 u32 *in;
368
369 inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
370 in = kvzalloc(inlen, GFP_KERNEL);
371 if (!in)
372 return -ENOMEM;
373
374 rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
375
376 MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
377 MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
378
379 mlx5e_hairpin_fill_rqt_rqns(hp, rqtc);
380
381 err = mlx5_core_create_rqt(mdev, in, inlen, &hp->indir_rqt.rqtn);
382 if (!err)
383 hp->indir_rqt.enabled = true;
384
385 kvfree(in);
386 return err;
387}
388
389static int mlx5e_hairpin_create_indirect_tirs(struct mlx5e_hairpin *hp)
390{
391 struct mlx5e_priv *priv = hp->func_priv;
392 u32 in[MLX5_ST_SZ_DW(create_tir_in)];
393 int tt, i, err;
394 void *tirc;
395
396 for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) {
397 struct mlx5e_tirc_config ttconfig = mlx5e_tirc_get_default_config(tt);
398
399 memset(in, 0, MLX5_ST_SZ_BYTES(create_tir_in));
400 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
401
402 MLX5_SET(tirc, tirc, transport_domain, hp->tdn);
403 MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_INDIRECT);
404 MLX5_SET(tirc, tirc, indirect_table, hp->indir_rqt.rqtn);
405 mlx5e_build_indir_tir_ctx_hash(&priv->rss_params, &ttconfig, tirc, false);
406
407 err = mlx5_core_create_tir(hp->func_mdev, in,
408 MLX5_ST_SZ_BYTES(create_tir_in), &hp->indir_tirn[tt]);
409 if (err) {
410 mlx5_core_warn(hp->func_mdev, "create indirect tirs failed, %d\n", err);
411 goto err_destroy_tirs;
412 }
413 }
414 return 0;
415
416err_destroy_tirs:
417 for (i = 0; i < tt; i++)
418 mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[i]);
419 return err;
420}
421
422static void mlx5e_hairpin_destroy_indirect_tirs(struct mlx5e_hairpin *hp)
423{
424 int tt;
425
426 for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
427 mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[tt]);
428}
429
430static void mlx5e_hairpin_set_ttc_params(struct mlx5e_hairpin *hp,
431 struct ttc_params *ttc_params)
432{
433 struct mlx5_flow_table_attr *ft_attr = &ttc_params->ft_attr;
434 int tt;
435
436 memset(ttc_params, 0, sizeof(*ttc_params));
437
438 ttc_params->any_tt_tirn = hp->tirn;
439
440 for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
441 ttc_params->indir_tirn[tt] = hp->indir_tirn[tt];
442
443 ft_attr->max_fte = MLX5E_NUM_TT;
444 ft_attr->level = MLX5E_TC_TTC_FT_LEVEL;
445 ft_attr->prio = MLX5E_TC_PRIO;
446}
447
448static int mlx5e_hairpin_rss_init(struct mlx5e_hairpin *hp)
449{
450 struct mlx5e_priv *priv = hp->func_priv;
451 struct ttc_params ttc_params;
452 int err;
453
454 err = mlx5e_hairpin_create_indirect_rqt(hp);
455 if (err)
456 return err;
457
458 err = mlx5e_hairpin_create_indirect_tirs(hp);
459 if (err)
460 goto err_create_indirect_tirs;
461
462 mlx5e_hairpin_set_ttc_params(hp, &ttc_params);
463 err = mlx5e_create_ttc_table(priv, &ttc_params, &hp->ttc);
464 if (err)
465 goto err_create_ttc_table;
466
467 netdev_dbg(priv->netdev, "add hairpin: using %d channels rss ttc table id %x\n",
468 hp->num_channels, hp->ttc.ft.t->id);
469
470 return 0;
471
472err_create_ttc_table:
473 mlx5e_hairpin_destroy_indirect_tirs(hp);
474err_create_indirect_tirs:
475 mlx5e_destroy_rqt(priv, &hp->indir_rqt);
476
477 return err;
478}
479
480static void mlx5e_hairpin_rss_cleanup(struct mlx5e_hairpin *hp)
481{
482 struct mlx5e_priv *priv = hp->func_priv;
483
484 mlx5e_destroy_ttc_table(priv, &hp->ttc);
485 mlx5e_hairpin_destroy_indirect_tirs(hp);
486 mlx5e_destroy_rqt(priv, &hp->indir_rqt);
487}
488
489static struct mlx5e_hairpin *
490mlx5e_hairpin_create(struct mlx5e_priv *priv, struct mlx5_hairpin_params *params,
491 int peer_ifindex)
492{
493 struct mlx5_core_dev *func_mdev, *peer_mdev;
494 struct mlx5e_hairpin *hp;
495 struct mlx5_hairpin *pair;
496 int err;
497
498 hp = kzalloc(sizeof(*hp), GFP_KERNEL);
499 if (!hp)
500 return ERR_PTR(-ENOMEM);
501
502 func_mdev = priv->mdev;
503 peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
504
505 pair = mlx5_core_hairpin_create(func_mdev, peer_mdev, params);
506 if (IS_ERR(pair)) {
507 err = PTR_ERR(pair);
508 goto create_pair_err;
509 }
510 hp->pair = pair;
511 hp->func_mdev = func_mdev;
512 hp->func_priv = priv;
513 hp->num_channels = params->num_channels;
514
515 err = mlx5e_hairpin_create_transport(hp);
516 if (err)
517 goto create_transport_err;
518
519 if (hp->num_channels > 1) {
520 err = mlx5e_hairpin_rss_init(hp);
521 if (err)
522 goto rss_init_err;
523 }
524
525 return hp;
526
527rss_init_err:
528 mlx5e_hairpin_destroy_transport(hp);
529create_transport_err:
530 mlx5_core_hairpin_destroy(hp->pair);
531create_pair_err:
532 kfree(hp);
533 return ERR_PTR(err);
534}
535
536static void mlx5e_hairpin_destroy(struct mlx5e_hairpin *hp)
537{
538 if (hp->num_channels > 1)
539 mlx5e_hairpin_rss_cleanup(hp);
540 mlx5e_hairpin_destroy_transport(hp);
541 mlx5_core_hairpin_destroy(hp->pair);
542 kvfree(hp);
543}
544
545static inline u32 hash_hairpin_info(u16 peer_vhca_id, u8 prio)
546{
547 return (peer_vhca_id << 16 | prio);
548}
549
550static struct mlx5e_hairpin_entry *mlx5e_hairpin_get(struct mlx5e_priv *priv,
551 u16 peer_vhca_id, u8 prio)
552{
553 struct mlx5e_hairpin_entry *hpe;
554 u32 hash_key = hash_hairpin_info(peer_vhca_id, prio);
555
556 hash_for_each_possible(priv->fs.tc.hairpin_tbl, hpe,
557 hairpin_hlist, hash_key) {
558 if (hpe->peer_vhca_id == peer_vhca_id && hpe->prio == prio)
559 return hpe;
560 }
561
562 return NULL;
563}
564
565#define UNKNOWN_MATCH_PRIO 8
566
567static int mlx5e_hairpin_get_prio(struct mlx5e_priv *priv,
568 struct mlx5_flow_spec *spec, u8 *match_prio,
569 struct netlink_ext_ack *extack)
570{
571 void *headers_c, *headers_v;
572 u8 prio_val, prio_mask = 0;
573 bool vlan_present;
574
575#ifdef CONFIG_MLX5_CORE_EN_DCB
576 if (priv->dcbx_dp.trust_state != MLX5_QPTS_TRUST_PCP) {
577 NL_SET_ERR_MSG_MOD(extack,
578 "only PCP trust state supported for hairpin");
579 return -EOPNOTSUPP;
580 }
581#endif
582 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers);
583 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
584
585 vlan_present = MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag);
586 if (vlan_present) {
587 prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio);
588 prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio);
589 }
590
591 if (!vlan_present || !prio_mask) {
592 prio_val = UNKNOWN_MATCH_PRIO;
593 } else if (prio_mask != 0x7) {
594 NL_SET_ERR_MSG_MOD(extack,
595 "masked priority match not supported for hairpin");
596 return -EOPNOTSUPP;
597 }
598
599 *match_prio = prio_val;
600 return 0;
601}
602
603static int mlx5e_hairpin_flow_add(struct mlx5e_priv *priv,
604 struct mlx5e_tc_flow *flow,
605 struct mlx5e_tc_flow_parse_attr *parse_attr,
606 struct netlink_ext_ack *extack)
607{
608 int peer_ifindex = parse_attr->mirred_ifindex[0];
609 struct mlx5_hairpin_params params;
610 struct mlx5_core_dev *peer_mdev;
611 struct mlx5e_hairpin_entry *hpe;
612 struct mlx5e_hairpin *hp;
613 u64 link_speed64;
614 u32 link_speed;
615 u8 match_prio;
616 u16 peer_id;
617 int err;
618
619 peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
620 if (!MLX5_CAP_GEN(priv->mdev, hairpin) || !MLX5_CAP_GEN(peer_mdev, hairpin)) {
621 NL_SET_ERR_MSG_MOD(extack, "hairpin is not supported");
622 return -EOPNOTSUPP;
623 }
624
625 peer_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
626 err = mlx5e_hairpin_get_prio(priv, &parse_attr->spec, &match_prio,
627 extack);
628 if (err)
629 return err;
630 hpe = mlx5e_hairpin_get(priv, peer_id, match_prio);
631 if (hpe)
632 goto attach_flow;
633
634 hpe = kzalloc(sizeof(*hpe), GFP_KERNEL);
635 if (!hpe)
636 return -ENOMEM;
637
638 INIT_LIST_HEAD(&hpe->flows);
639 hpe->peer_vhca_id = peer_id;
640 hpe->prio = match_prio;
641
642 params.log_data_size = 15;
643 params.log_data_size = min_t(u8, params.log_data_size,
644 MLX5_CAP_GEN(priv->mdev, log_max_hairpin_wq_data_sz));
645 params.log_data_size = max_t(u8, params.log_data_size,
646 MLX5_CAP_GEN(priv->mdev, log_min_hairpin_wq_data_sz));
647
648 params.log_num_packets = params.log_data_size -
649 MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(priv->mdev);
650 params.log_num_packets = min_t(u8, params.log_num_packets,
651 MLX5_CAP_GEN(priv->mdev, log_max_hairpin_num_packets));
652
653 params.q_counter = priv->q_counter;
654
655 mlx5e_port_max_linkspeed(priv->mdev, &link_speed);
656 link_speed = max_t(u32, link_speed, 50000);
657 link_speed64 = link_speed;
658 do_div(link_speed64, 50000);
659 params.num_channels = link_speed64;
660
661 hp = mlx5e_hairpin_create(priv, ¶ms, peer_ifindex);
662 if (IS_ERR(hp)) {
663 err = PTR_ERR(hp);
664 goto create_hairpin_err;
665 }
666
667 netdev_dbg(priv->netdev, "add hairpin: tirn %x rqn %x peer %s sqn %x prio %d (log) data %d packets %d\n",
668 hp->tirn, hp->pair->rqn[0],
669 dev_name(hp->pair->peer_mdev->device),
670 hp->pair->sqn[0], match_prio, params.log_data_size, params.log_num_packets);
671
672 hpe->hp = hp;
673 hash_add(priv->fs.tc.hairpin_tbl, &hpe->hairpin_hlist,
674 hash_hairpin_info(peer_id, match_prio));
675
676attach_flow:
677 if (hpe->hp->num_channels > 1) {
678 flow->flags |= MLX5E_TC_FLOW_HAIRPIN_RSS;
679 flow->nic_attr->hairpin_ft = hpe->hp->ttc.ft.t;
680 } else {
681 flow->nic_attr->hairpin_tirn = hpe->hp->tirn;
682 }
683 list_add(&flow->hairpin, &hpe->flows);
684
685 return 0;
686
687create_hairpin_err:
688 kfree(hpe);
689 return err;
690}
691
692static void mlx5e_hairpin_flow_del(struct mlx5e_priv *priv,
693 struct mlx5e_tc_flow *flow)
694{
695 struct list_head *next = flow->hairpin.next;
696
697 list_del(&flow->hairpin);
698
699
700 if (list_empty(next)) {
701 struct mlx5e_hairpin_entry *hpe;
702
703 hpe = list_entry(next, struct mlx5e_hairpin_entry, flows);
704
705 netdev_dbg(priv->netdev, "del hairpin: peer %s\n",
706 dev_name(hpe->hp->pair->peer_mdev->device));
707
708 mlx5e_hairpin_destroy(hpe->hp);
709 hash_del(&hpe->hairpin_hlist);
710 kfree(hpe);
711 }
712}
713
714static int
715mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
716 struct mlx5e_tc_flow_parse_attr *parse_attr,
717 struct mlx5e_tc_flow *flow,
718 struct netlink_ext_ack *extack)
719{
720 struct mlx5_flow_context *flow_context = &parse_attr->spec.flow_context;
721 struct mlx5_nic_flow_attr *attr = flow->nic_attr;
722 struct mlx5_core_dev *dev = priv->mdev;
723 struct mlx5_flow_destination dest[2] = {};
724 struct mlx5_flow_act flow_act = {
725 .action = attr->action,
726 .reformat_id = 0,
727 .flags = FLOW_ACT_NO_APPEND,
728 };
729 struct mlx5_fc *counter = NULL;
730 bool table_created = false;
731 int err, dest_ix = 0;
732
733 flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
734 flow_context->flow_tag = attr->flow_tag;
735
736 if (flow->flags & MLX5E_TC_FLOW_HAIRPIN) {
737 err = mlx5e_hairpin_flow_add(priv, flow, parse_attr, extack);
738 if (err) {
739 goto err_add_hairpin_flow;
740 }
741 if (flow->flags & MLX5E_TC_FLOW_HAIRPIN_RSS) {
742 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
743 dest[dest_ix].ft = attr->hairpin_ft;
744 } else {
745 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_TIR;
746 dest[dest_ix].tir_num = attr->hairpin_tirn;
747 }
748 dest_ix++;
749 } else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
750 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
751 dest[dest_ix].ft = priv->fs.vlan.ft.t;
752 dest_ix++;
753 }
754
755 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
756 counter = mlx5_fc_create(dev, true);
757 if (IS_ERR(counter)) {
758 err = PTR_ERR(counter);
759 goto err_fc_create;
760 }
761 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
762 dest[dest_ix].counter_id = mlx5_fc_id(counter);
763 dest_ix++;
764 attr->counter = counter;
765 }
766
767 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
768 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
769 flow_act.modify_id = attr->mod_hdr_id;
770 kfree(parse_attr->mod_hdr_actions);
771 if (err)
772 goto err_create_mod_hdr_id;
773 }
774
775 if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
776 int tc_grp_size, tc_tbl_size;
777 u32 max_flow_counter;
778
779 max_flow_counter = (MLX5_CAP_GEN(dev, max_flow_counter_31_16) << 16) |
780 MLX5_CAP_GEN(dev, max_flow_counter_15_0);
781
782 tc_grp_size = min_t(int, max_flow_counter, MLX5E_TC_TABLE_MAX_GROUP_SIZE);
783
784 tc_tbl_size = min_t(int, tc_grp_size * MLX5E_TC_TABLE_NUM_GROUPS,
785 BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev, log_max_ft_size)));
786
787 priv->fs.tc.t =
788 mlx5_create_auto_grouped_flow_table(priv->fs.ns,
789 MLX5E_TC_PRIO,
790 tc_tbl_size,
791 MLX5E_TC_TABLE_NUM_GROUPS,
792 MLX5E_TC_FT_LEVEL, 0);
793 if (IS_ERR(priv->fs.tc.t)) {
794 NL_SET_ERR_MSG_MOD(extack,
795 "Failed to create tc offload table\n");
796 netdev_err(priv->netdev,
797 "Failed to create tc offload table\n");
798 err = PTR_ERR(priv->fs.tc.t);
799 goto err_create_ft;
800 }
801
802 table_created = true;
803 }
804
805 if (attr->match_level != MLX5_MATCH_NONE)
806 parse_attr->spec.match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS;
807
808 flow->rule[0] = mlx5_add_flow_rules(priv->fs.tc.t, &parse_attr->spec,
809 &flow_act, dest, dest_ix);
810
811 if (IS_ERR(flow->rule[0])) {
812 err = PTR_ERR(flow->rule[0]);
813 goto err_add_rule;
814 }
815
816 return 0;
817
818err_add_rule:
819 if (table_created) {
820 mlx5_destroy_flow_table(priv->fs.tc.t);
821 priv->fs.tc.t = NULL;
822 }
823err_create_ft:
824 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
825 mlx5e_detach_mod_hdr(priv, flow);
826err_create_mod_hdr_id:
827 mlx5_fc_destroy(dev, counter);
828err_fc_create:
829 if (flow->flags & MLX5E_TC_FLOW_HAIRPIN)
830 mlx5e_hairpin_flow_del(priv, flow);
831err_add_hairpin_flow:
832 return err;
833}
834
835static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
836 struct mlx5e_tc_flow *flow)
837{
838 struct mlx5_nic_flow_attr *attr = flow->nic_attr;
839 struct mlx5_fc *counter = NULL;
840
841 counter = attr->counter;
842 mlx5_del_flow_rules(flow->rule[0]);
843 mlx5_fc_destroy(priv->mdev, counter);
844
845 if (!mlx5e_tc_num_filters(priv, MLX5E_TC_NIC_OFFLOAD) && priv->fs.tc.t) {
846 mlx5_destroy_flow_table(priv->fs.tc.t);
847 priv->fs.tc.t = NULL;
848 }
849
850 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
851 mlx5e_detach_mod_hdr(priv, flow);
852
853 if (flow->flags & MLX5E_TC_FLOW_HAIRPIN)
854 mlx5e_hairpin_flow_del(priv, flow);
855}
856
857static void mlx5e_detach_encap(struct mlx5e_priv *priv,
858 struct mlx5e_tc_flow *flow, int out_index);
859
860static int mlx5e_attach_encap(struct mlx5e_priv *priv,
861 struct mlx5e_tc_flow *flow,
862 struct net_device *mirred_dev,
863 int out_index,
864 struct netlink_ext_ack *extack,
865 struct net_device **encap_dev,
866 bool *encap_valid);
867
868static struct mlx5_flow_handle *
869mlx5e_tc_offload_fdb_rules(struct mlx5_eswitch *esw,
870 struct mlx5e_tc_flow *flow,
871 struct mlx5_flow_spec *spec,
872 struct mlx5_esw_flow_attr *attr)
873{
874 struct mlx5_flow_handle *rule;
875
876 rule = mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
877 if (IS_ERR(rule))
878 return rule;
879
880 if (attr->split_count) {
881 flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, spec, attr);
882 if (IS_ERR(flow->rule[1])) {
883 mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
884 return flow->rule[1];
885 }
886 }
887
888 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
889 return rule;
890}
891
892static void
893mlx5e_tc_unoffload_fdb_rules(struct mlx5_eswitch *esw,
894 struct mlx5e_tc_flow *flow,
895 struct mlx5_esw_flow_attr *attr)
896{
897 flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
898
899 if (attr->split_count)
900 mlx5_eswitch_del_fwd_rule(esw, flow->rule[1], attr);
901
902 mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
903}
904
905static struct mlx5_flow_handle *
906mlx5e_tc_offload_to_slow_path(struct mlx5_eswitch *esw,
907 struct mlx5e_tc_flow *flow,
908 struct mlx5_flow_spec *spec,
909 struct mlx5_esw_flow_attr *slow_attr)
910{
911 struct mlx5_flow_handle *rule;
912
913 memcpy(slow_attr, flow->esw_attr, sizeof(*slow_attr));
914 slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
915 slow_attr->split_count = 0;
916 slow_attr->dest_chain = FDB_SLOW_PATH_CHAIN;
917
918 rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, slow_attr);
919 if (!IS_ERR(rule))
920 flow->flags |= MLX5E_TC_FLOW_SLOW;
921
922 return rule;
923}
924
925static void
926mlx5e_tc_unoffload_from_slow_path(struct mlx5_eswitch *esw,
927 struct mlx5e_tc_flow *flow,
928 struct mlx5_esw_flow_attr *slow_attr)
929{
930 memcpy(slow_attr, flow->esw_attr, sizeof(*slow_attr));
931 slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
932 slow_attr->split_count = 0;
933 slow_attr->dest_chain = FDB_SLOW_PATH_CHAIN;
934 mlx5e_tc_unoffload_fdb_rules(esw, flow, slow_attr);
935 flow->flags &= ~MLX5E_TC_FLOW_SLOW;
936}
937
938static void add_unready_flow(struct mlx5e_tc_flow *flow)
939{
940 struct mlx5_rep_uplink_priv *uplink_priv;
941 struct mlx5e_rep_priv *rpriv;
942 struct mlx5_eswitch *esw;
943
944 esw = flow->priv->mdev->priv.eswitch;
945 rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
946 uplink_priv = &rpriv->uplink_priv;
947
948 flow->flags |= MLX5E_TC_FLOW_NOT_READY;
949 list_add_tail(&flow->unready, &uplink_priv->unready_flows);
950}
951
952static void remove_unready_flow(struct mlx5e_tc_flow *flow)
953{
954 list_del(&flow->unready);
955 flow->flags &= ~MLX5E_TC_FLOW_NOT_READY;
956}
957
958static int
959mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
960 struct mlx5e_tc_flow *flow,
961 struct netlink_ext_ack *extack)
962{
963 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
964 u32 max_chain = mlx5_eswitch_get_chain_range(esw);
965 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
966 struct mlx5e_tc_flow_parse_attr *parse_attr = attr->parse_attr;
967 u16 max_prio = mlx5_eswitch_get_prio_range(esw);
968 struct net_device *out_dev, *encap_dev = NULL;
969 struct mlx5_fc *counter = NULL;
970 struct mlx5e_rep_priv *rpriv;
971 struct mlx5e_priv *out_priv;
972 bool encap_valid = true;
973 int err = 0;
974 int out_index;
975
976 if (!mlx5_eswitch_prios_supported(esw) && attr->prio != 1) {
977 NL_SET_ERR_MSG(extack, "E-switch priorities unsupported, upgrade FW");
978 return -EOPNOTSUPP;
979 }
980
981 if (attr->chain > max_chain) {
982 NL_SET_ERR_MSG(extack, "Requested chain is out of supported range");
983 err = -EOPNOTSUPP;
984 goto err_max_prio_chain;
985 }
986
987 if (attr->prio > max_prio) {
988 NL_SET_ERR_MSG(extack, "Requested priority is out of supported range");
989 err = -EOPNOTSUPP;
990 goto err_max_prio_chain;
991 }
992
993 for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) {
994 int mirred_ifindex;
995
996 if (!(attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP))
997 continue;
998
999 mirred_ifindex = parse_attr->mirred_ifindex[out_index];
1000 out_dev = __dev_get_by_index(dev_net(priv->netdev),
1001 mirred_ifindex);
1002 err = mlx5e_attach_encap(priv, flow, out_dev, out_index,
1003 extack, &encap_dev, &encap_valid);
1004 if (err)
1005 goto err_attach_encap;
1006
1007 out_priv = netdev_priv(encap_dev);
1008 rpriv = out_priv->ppriv;
1009 attr->dests[out_index].rep = rpriv->rep;
1010 attr->dests[out_index].mdev = out_priv->mdev;
1011 }
1012
1013 err = mlx5_eswitch_add_vlan_action(esw, attr);
1014 if (err)
1015 goto err_add_vlan;
1016
1017 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
1018 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
1019 kfree(parse_attr->mod_hdr_actions);
1020 if (err)
1021 goto err_mod_hdr;
1022 }
1023
1024 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
1025 counter = mlx5_fc_create(attr->counter_dev, true);
1026 if (IS_ERR(counter)) {
1027 err = PTR_ERR(counter);
1028 goto err_create_counter;
1029 }
1030
1031 attr->counter = counter;
1032 }
1033
1034
1035
1036
1037
1038 if (!encap_valid) {
1039
1040 struct mlx5_esw_flow_attr slow_attr;
1041
1042 flow->rule[0] = mlx5e_tc_offload_to_slow_path(esw, flow, &parse_attr->spec, &slow_attr);
1043 } else {
1044 flow->rule[0] = mlx5e_tc_offload_fdb_rules(esw, flow, &parse_attr->spec, attr);
1045 }
1046
1047 if (IS_ERR(flow->rule[0])) {
1048 err = PTR_ERR(flow->rule[0]);
1049 goto err_add_rule;
1050 }
1051
1052 return 0;
1053
1054err_add_rule:
1055 mlx5_fc_destroy(attr->counter_dev, counter);
1056err_create_counter:
1057 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
1058 mlx5e_detach_mod_hdr(priv, flow);
1059err_mod_hdr:
1060 mlx5_eswitch_del_vlan_action(esw, attr);
1061err_add_vlan:
1062 for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++)
1063 if (attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP)
1064 mlx5e_detach_encap(priv, flow, out_index);
1065err_attach_encap:
1066err_max_prio_chain:
1067 return err;
1068}
1069
1070static bool mlx5_flow_has_geneve_opt(struct mlx5e_tc_flow *flow)
1071{
1072 struct mlx5_flow_spec *spec = &flow->esw_attr->parse_attr->spec;
1073 void *headers_v = MLX5_ADDR_OF(fte_match_param,
1074 spec->match_value,
1075 misc_parameters_3);
1076 u32 geneve_tlv_opt_0_data = MLX5_GET(fte_match_set_misc3,
1077 headers_v,
1078 geneve_tlv_option_0_data);
1079
1080 return !!geneve_tlv_opt_0_data;
1081}
1082
1083static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
1084 struct mlx5e_tc_flow *flow)
1085{
1086 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1087 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1088 struct mlx5_esw_flow_attr slow_attr;
1089 int out_index;
1090
1091 if (flow->flags & MLX5E_TC_FLOW_NOT_READY) {
1092 remove_unready_flow(flow);
1093 kvfree(attr->parse_attr);
1094 return;
1095 }
1096
1097 if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
1098 if (flow->flags & MLX5E_TC_FLOW_SLOW)
1099 mlx5e_tc_unoffload_from_slow_path(esw, flow, &slow_attr);
1100 else
1101 mlx5e_tc_unoffload_fdb_rules(esw, flow, attr);
1102 }
1103
1104 if (mlx5_flow_has_geneve_opt(flow))
1105 mlx5_geneve_tlv_option_del(priv->mdev->geneve);
1106
1107 mlx5_eswitch_del_vlan_action(esw, attr);
1108
1109 for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++)
1110 if (attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP)
1111 mlx5e_detach_encap(priv, flow, out_index);
1112 kvfree(attr->parse_attr);
1113
1114 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
1115 mlx5e_detach_mod_hdr(priv, flow);
1116
1117 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
1118 mlx5_fc_destroy(attr->counter_dev, attr->counter);
1119}
1120
1121void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv,
1122 struct mlx5e_encap_entry *e)
1123{
1124 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1125 struct mlx5_esw_flow_attr slow_attr, *esw_attr;
1126 struct mlx5_flow_handle *rule;
1127 struct mlx5_flow_spec *spec;
1128 struct encap_flow_item *efi;
1129 struct mlx5e_tc_flow *flow;
1130 int err;
1131
1132 err = mlx5_packet_reformat_alloc(priv->mdev,
1133 e->reformat_type,
1134 e->encap_size, e->encap_header,
1135 MLX5_FLOW_NAMESPACE_FDB,
1136 &e->encap_id);
1137 if (err) {
1138 mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %d\n",
1139 err);
1140 return;
1141 }
1142 e->flags |= MLX5_ENCAP_ENTRY_VALID;
1143 mlx5e_rep_queue_neigh_stats_work(priv);
1144
1145 list_for_each_entry(efi, &e->flows, list) {
1146 bool all_flow_encaps_valid = true;
1147 int i;
1148
1149 flow = container_of(efi, struct mlx5e_tc_flow, encaps[efi->index]);
1150 esw_attr = flow->esw_attr;
1151 spec = &esw_attr->parse_attr->spec;
1152
1153 esw_attr->dests[efi->index].encap_id = e->encap_id;
1154 esw_attr->dests[efi->index].flags |= MLX5_ESW_DEST_ENCAP_VALID;
1155
1156
1157
1158
1159 for (i = 0; i < MLX5_MAX_FLOW_FWD_VPORTS; i++) {
1160 if (!(esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP))
1161 continue;
1162 if (!(esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP_VALID)) {
1163 all_flow_encaps_valid = false;
1164 break;
1165 }
1166 }
1167
1168 if (!all_flow_encaps_valid)
1169 continue;
1170
1171 rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, esw_attr);
1172 if (IS_ERR(rule)) {
1173 err = PTR_ERR(rule);
1174 mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n",
1175 err);
1176 continue;
1177 }
1178
1179 mlx5e_tc_unoffload_from_slow_path(esw, flow, &slow_attr);
1180 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
1181 flow->rule[0] = rule;
1182 }
1183}
1184
1185void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv,
1186 struct mlx5e_encap_entry *e)
1187{
1188 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1189 struct mlx5_esw_flow_attr slow_attr;
1190 struct mlx5_flow_handle *rule;
1191 struct mlx5_flow_spec *spec;
1192 struct encap_flow_item *efi;
1193 struct mlx5e_tc_flow *flow;
1194 int err;
1195
1196 list_for_each_entry(efi, &e->flows, list) {
1197 flow = container_of(efi, struct mlx5e_tc_flow, encaps[efi->index]);
1198 spec = &flow->esw_attr->parse_attr->spec;
1199
1200
1201 rule = mlx5e_tc_offload_to_slow_path(esw, flow, spec, &slow_attr);
1202
1203 flow->esw_attr->dests[efi->index].flags &= ~MLX5_ESW_DEST_ENCAP_VALID;
1204
1205 if (IS_ERR(rule)) {
1206 err = PTR_ERR(rule);
1207 mlx5_core_warn(priv->mdev, "Failed to update slow path (encap) flow, %d\n",
1208 err);
1209 continue;
1210 }
1211
1212 mlx5e_tc_unoffload_fdb_rules(esw, flow, flow->esw_attr);
1213 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
1214 flow->rule[0] = rule;
1215 }
1216
1217
1218 e->flags &= ~MLX5_ENCAP_ENTRY_VALID;
1219 mlx5_packet_reformat_dealloc(priv->mdev, e->encap_id);
1220}
1221
1222static struct mlx5_fc *mlx5e_tc_get_counter(struct mlx5e_tc_flow *flow)
1223{
1224 if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
1225 return flow->esw_attr->counter;
1226 else
1227 return flow->nic_attr->counter;
1228}
1229
1230void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
1231{
1232 struct mlx5e_neigh *m_neigh = &nhe->m_neigh;
1233 struct mlx5e_tc_flow *flow;
1234 struct mlx5e_encap_entry *e;
1235 struct mlx5_fc *counter;
1236 struct neigh_table *tbl;
1237 bool neigh_used = false;
1238 struct neighbour *n;
1239 u64 lastuse;
1240
1241 if (m_neigh->family == AF_INET)
1242 tbl = &arp_tbl;
1243#if IS_ENABLED(CONFIG_IPV6)
1244 else if (m_neigh->family == AF_INET6)
1245 tbl = &nd_tbl;
1246#endif
1247 else
1248 return;
1249
1250 list_for_each_entry(e, &nhe->encap_list, encap_list) {
1251 struct encap_flow_item *efi;
1252 if (!(e->flags & MLX5_ENCAP_ENTRY_VALID))
1253 continue;
1254 list_for_each_entry(efi, &e->flows, list) {
1255 flow = container_of(efi, struct mlx5e_tc_flow,
1256 encaps[efi->index]);
1257 if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
1258 counter = mlx5e_tc_get_counter(flow);
1259 lastuse = mlx5_fc_query_lastuse(counter);
1260 if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) {
1261 neigh_used = true;
1262 break;
1263 }
1264 }
1265 }
1266 if (neigh_used)
1267 break;
1268 }
1269
1270 if (neigh_used) {
1271 nhe->reported_lastuse = jiffies;
1272
1273
1274
1275
1276 n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev);
1277 if (!n)
1278 return;
1279
1280 neigh_event_send(n, NULL);
1281 neigh_release(n);
1282 }
1283}
1284
1285static void mlx5e_detach_encap(struct mlx5e_priv *priv,
1286 struct mlx5e_tc_flow *flow, int out_index)
1287{
1288 struct list_head *next = flow->encaps[out_index].list.next;
1289
1290 list_del(&flow->encaps[out_index].list);
1291 if (list_empty(next)) {
1292 struct mlx5e_encap_entry *e;
1293
1294 e = list_entry(next, struct mlx5e_encap_entry, flows);
1295 mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1296
1297 if (e->flags & MLX5_ENCAP_ENTRY_VALID)
1298 mlx5_packet_reformat_dealloc(priv->mdev, e->encap_id);
1299
1300 hash_del_rcu(&e->encap_hlist);
1301 kfree(e->encap_header);
1302 kfree(e);
1303 }
1304}
1305
1306static void __mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow)
1307{
1308 struct mlx5_eswitch *esw = flow->priv->mdev->priv.eswitch;
1309
1310 if (!(flow->flags & MLX5E_TC_FLOW_ESWITCH) ||
1311 !(flow->flags & MLX5E_TC_FLOW_DUP))
1312 return;
1313
1314 mutex_lock(&esw->offloads.peer_mutex);
1315 list_del(&flow->peer);
1316 mutex_unlock(&esw->offloads.peer_mutex);
1317
1318 flow->flags &= ~MLX5E_TC_FLOW_DUP;
1319
1320 mlx5e_tc_del_fdb_flow(flow->peer_flow->priv, flow->peer_flow);
1321 kvfree(flow->peer_flow);
1322 flow->peer_flow = NULL;
1323}
1324
1325static void mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow)
1326{
1327 struct mlx5_core_dev *dev = flow->priv->mdev;
1328 struct mlx5_devcom *devcom = dev->priv.devcom;
1329 struct mlx5_eswitch *peer_esw;
1330
1331 peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
1332 if (!peer_esw)
1333 return;
1334
1335 __mlx5e_tc_del_fdb_peer_flow(flow);
1336 mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
1337}
1338
1339static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
1340 struct mlx5e_tc_flow *flow)
1341{
1342 if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
1343 mlx5e_tc_del_fdb_peer_flow(flow);
1344 mlx5e_tc_del_fdb_flow(priv, flow);
1345 } else {
1346 mlx5e_tc_del_nic_flow(priv, flow);
1347 }
1348}
1349
1350
1351static int parse_tunnel_attr(struct mlx5e_priv *priv,
1352 struct mlx5_flow_spec *spec,
1353 struct flow_cls_offload *f,
1354 struct net_device *filter_dev, u8 *match_level)
1355{
1356 struct netlink_ext_ack *extack = f->common.extack;
1357 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1358 outer_headers);
1359 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1360 outer_headers);
1361 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
1362 int err;
1363
1364 err = mlx5e_tc_tun_parse(filter_dev, priv, spec, f,
1365 headers_c, headers_v, match_level);
1366 if (err) {
1367 NL_SET_ERR_MSG_MOD(extack,
1368 "failed to parse tunnel attributes");
1369 return err;
1370 }
1371
1372 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS)) {
1373 struct flow_match_ipv4_addrs match;
1374
1375 flow_rule_match_enc_ipv4_addrs(rule, &match);
1376 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1377 src_ipv4_src_ipv6.ipv4_layout.ipv4,
1378 ntohl(match.mask->src));
1379 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1380 src_ipv4_src_ipv6.ipv4_layout.ipv4,
1381 ntohl(match.key->src));
1382
1383 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1384 dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
1385 ntohl(match.mask->dst));
1386 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1387 dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
1388 ntohl(match.key->dst));
1389
1390 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
1391 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
1392 } else if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS)) {
1393 struct flow_match_ipv6_addrs match;
1394
1395 flow_rule_match_enc_ipv6_addrs(rule, &match);
1396 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1397 src_ipv4_src_ipv6.ipv6_layout.ipv6),
1398 &match.mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
1399 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1400 src_ipv4_src_ipv6.ipv6_layout.ipv6),
1401 &match.key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
1402
1403 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1404 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1405 &match.mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
1406 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1407 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1408 &match.key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
1409
1410 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
1411 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6);
1412 }
1413
1414 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) {
1415 struct flow_match_ip match;
1416
1417 flow_rule_match_enc_ip(rule, &match);
1418 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn,
1419 match.mask->tos & 0x3);
1420 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn,
1421 match.key->tos & 0x3);
1422
1423 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp,
1424 match.mask->tos >> 2);
1425 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp,
1426 match.key->tos >> 2);
1427
1428 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit,
1429 match.mask->ttl);
1430 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit,
1431 match.key->ttl);
1432
1433 if (match.mask->ttl &&
1434 !MLX5_CAP_ESW_FLOWTABLE_FDB
1435 (priv->mdev,
1436 ft_field_support.outer_ipv4_ttl)) {
1437 NL_SET_ERR_MSG_MOD(extack,
1438 "Matching on TTL is not supported");
1439 return -EOPNOTSUPP;
1440 }
1441
1442 }
1443
1444
1445
1446
1447 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
1448 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
1449 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1450 dmac_47_16), priv->netdev->dev_addr);
1451
1452
1453 MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
1454 MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
1455
1456 return 0;
1457}
1458
1459static void *get_match_headers_criteria(u32 flags,
1460 struct mlx5_flow_spec *spec)
1461{
1462 return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
1463 MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1464 inner_headers) :
1465 MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1466 outer_headers);
1467}
1468
1469static void *get_match_headers_value(u32 flags,
1470 struct mlx5_flow_spec *spec)
1471{
1472 return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
1473 MLX5_ADDR_OF(fte_match_param, spec->match_value,
1474 inner_headers) :
1475 MLX5_ADDR_OF(fte_match_param, spec->match_value,
1476 outer_headers);
1477}
1478
1479static int __parse_cls_flower(struct mlx5e_priv *priv,
1480 struct mlx5_flow_spec *spec,
1481 struct flow_cls_offload *f,
1482 struct net_device *filter_dev,
1483 u8 *inner_match_level, u8 *outer_match_level)
1484{
1485 struct netlink_ext_ack *extack = f->common.extack;
1486 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1487 outer_headers);
1488 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1489 outer_headers);
1490 void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1491 misc_parameters);
1492 void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1493 misc_parameters);
1494 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
1495 struct flow_dissector *dissector = rule->match.dissector;
1496 u16 addr_type = 0;
1497 u8 ip_proto = 0;
1498 u8 *match_level;
1499
1500 match_level = outer_match_level;
1501
1502 if (dissector->used_keys &
1503 ~(BIT(FLOW_DISSECTOR_KEY_META) |
1504 BIT(FLOW_DISSECTOR_KEY_CONTROL) |
1505 BIT(FLOW_DISSECTOR_KEY_BASIC) |
1506 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
1507 BIT(FLOW_DISSECTOR_KEY_VLAN) |
1508 BIT(FLOW_DISSECTOR_KEY_CVLAN) |
1509 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
1510 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
1511 BIT(FLOW_DISSECTOR_KEY_PORTS) |
1512 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
1513 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
1514 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
1515 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
1516 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
1517 BIT(FLOW_DISSECTOR_KEY_TCP) |
1518 BIT(FLOW_DISSECTOR_KEY_IP) |
1519 BIT(FLOW_DISSECTOR_KEY_ENC_IP) |
1520 BIT(FLOW_DISSECTOR_KEY_ENC_OPTS))) {
1521 NL_SET_ERR_MSG_MOD(extack, "Unsupported key");
1522 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
1523 dissector->used_keys);
1524 return -EOPNOTSUPP;
1525 }
1526
1527 if (mlx5e_get_tc_tun(filter_dev)) {
1528 if (parse_tunnel_attr(priv, spec, f, filter_dev,
1529 outer_match_level))
1530 return -EOPNOTSUPP;
1531
1532
1533
1534
1535 match_level = inner_match_level;
1536 headers_c = get_match_headers_criteria(MLX5_FLOW_CONTEXT_ACTION_DECAP,
1537 spec);
1538 headers_v = get_match_headers_value(MLX5_FLOW_CONTEXT_ACTION_DECAP,
1539 spec);
1540 }
1541
1542 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
1543 struct flow_match_basic match;
1544
1545 flow_rule_match_basic(rule, &match);
1546 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
1547 ntohs(match.mask->n_proto));
1548 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
1549 ntohs(match.key->n_proto));
1550
1551 if (match.mask->n_proto)
1552 *match_level = MLX5_MATCH_L2;
1553 }
1554 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) ||
1555 is_vlan_dev(filter_dev)) {
1556 struct flow_dissector_key_vlan filter_dev_mask;
1557 struct flow_dissector_key_vlan filter_dev_key;
1558 struct flow_match_vlan match;
1559
1560 if (is_vlan_dev(filter_dev)) {
1561 match.key = &filter_dev_key;
1562 match.key->vlan_id = vlan_dev_vlan_id(filter_dev);
1563 match.key->vlan_tpid = vlan_dev_vlan_proto(filter_dev);
1564 match.key->vlan_priority = 0;
1565 match.mask = &filter_dev_mask;
1566 memset(match.mask, 0xff, sizeof(*match.mask));
1567 match.mask->vlan_priority = 0;
1568 } else {
1569 flow_rule_match_vlan(rule, &match);
1570 }
1571 if (match.mask->vlan_id ||
1572 match.mask->vlan_priority ||
1573 match.mask->vlan_tpid) {
1574 if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
1575 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1576 svlan_tag, 1);
1577 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1578 svlan_tag, 1);
1579 } else {
1580 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1581 cvlan_tag, 1);
1582 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1583 cvlan_tag, 1);
1584 }
1585
1586 MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid,
1587 match.mask->vlan_id);
1588 MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid,
1589 match.key->vlan_id);
1590
1591 MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio,
1592 match.mask->vlan_priority);
1593 MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio,
1594 match.key->vlan_priority);
1595
1596 *match_level = MLX5_MATCH_L2;
1597 }
1598 } else if (*match_level != MLX5_MATCH_NONE) {
1599 MLX5_SET(fte_match_set_lyr_2_4, headers_c, svlan_tag, 1);
1600 MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
1601 *match_level = MLX5_MATCH_L2;
1602 }
1603
1604 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
1605 struct flow_match_vlan match;
1606
1607 flow_rule_match_cvlan(rule, &match);
1608 if (match.mask->vlan_id ||
1609 match.mask->vlan_priority ||
1610 match.mask->vlan_tpid) {
1611 if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
1612 MLX5_SET(fte_match_set_misc, misc_c,
1613 outer_second_svlan_tag, 1);
1614 MLX5_SET(fte_match_set_misc, misc_v,
1615 outer_second_svlan_tag, 1);
1616 } else {
1617 MLX5_SET(fte_match_set_misc, misc_c,
1618 outer_second_cvlan_tag, 1);
1619 MLX5_SET(fte_match_set_misc, misc_v,
1620 outer_second_cvlan_tag, 1);
1621 }
1622
1623 MLX5_SET(fte_match_set_misc, misc_c, outer_second_vid,
1624 match.mask->vlan_id);
1625 MLX5_SET(fte_match_set_misc, misc_v, outer_second_vid,
1626 match.key->vlan_id);
1627 MLX5_SET(fte_match_set_misc, misc_c, outer_second_prio,
1628 match.mask->vlan_priority);
1629 MLX5_SET(fte_match_set_misc, misc_v, outer_second_prio,
1630 match.key->vlan_priority);
1631
1632 *match_level = MLX5_MATCH_L2;
1633 }
1634 }
1635
1636 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
1637 struct flow_match_eth_addrs match;
1638
1639 flow_rule_match_eth_addrs(rule, &match);
1640 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1641 dmac_47_16),
1642 match.mask->dst);
1643 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1644 dmac_47_16),
1645 match.key->dst);
1646
1647 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1648 smac_47_16),
1649 match.mask->src);
1650 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1651 smac_47_16),
1652 match.key->src);
1653
1654 if (!is_zero_ether_addr(match.mask->src) ||
1655 !is_zero_ether_addr(match.mask->dst))
1656 *match_level = MLX5_MATCH_L2;
1657 }
1658
1659 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
1660 struct flow_match_control match;
1661
1662 flow_rule_match_control(rule, &match);
1663 addr_type = match.key->addr_type;
1664
1665
1666 if (match.mask->flags & FLOW_DIS_FIRST_FRAG)
1667 return -EOPNOTSUPP;
1668
1669 if (match.mask->flags & FLOW_DIS_IS_FRAGMENT) {
1670 MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
1671 MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
1672 match.key->flags & FLOW_DIS_IS_FRAGMENT);
1673
1674
1675 if (!(match.key->flags & FLOW_DIS_IS_FRAGMENT))
1676 *match_level = MLX5_MATCH_L2;
1677
1678 else
1679 *match_level = MLX5_MATCH_L3;
1680 }
1681 }
1682
1683 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
1684 struct flow_match_basic match;
1685
1686 flow_rule_match_basic(rule, &match);
1687 ip_proto = match.key->ip_proto;
1688
1689 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
1690 match.mask->ip_proto);
1691 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
1692 match.key->ip_proto);
1693
1694 if (match.mask->ip_proto)
1695 *match_level = MLX5_MATCH_L3;
1696 }
1697
1698 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1699 struct flow_match_ipv4_addrs match;
1700
1701 flow_rule_match_ipv4_addrs(rule, &match);
1702 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1703 src_ipv4_src_ipv6.ipv4_layout.ipv4),
1704 &match.mask->src, sizeof(match.mask->src));
1705 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1706 src_ipv4_src_ipv6.ipv4_layout.ipv4),
1707 &match.key->src, sizeof(match.key->src));
1708 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1709 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
1710 &match.mask->dst, sizeof(match.mask->dst));
1711 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1712 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
1713 &match.key->dst, sizeof(match.key->dst));
1714
1715 if (match.mask->src || match.mask->dst)
1716 *match_level = MLX5_MATCH_L3;
1717 }
1718
1719 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1720 struct flow_match_ipv6_addrs match;
1721
1722 flow_rule_match_ipv6_addrs(rule, &match);
1723 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1724 src_ipv4_src_ipv6.ipv6_layout.ipv6),
1725 &match.mask->src, sizeof(match.mask->src));
1726 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1727 src_ipv4_src_ipv6.ipv6_layout.ipv6),
1728 &match.key->src, sizeof(match.key->src));
1729
1730 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1731 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1732 &match.mask->dst, sizeof(match.mask->dst));
1733 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1734 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1735 &match.key->dst, sizeof(match.key->dst));
1736
1737 if (ipv6_addr_type(&match.mask->src) != IPV6_ADDR_ANY ||
1738 ipv6_addr_type(&match.mask->dst) != IPV6_ADDR_ANY)
1739 *match_level = MLX5_MATCH_L3;
1740 }
1741
1742 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
1743 struct flow_match_ip match;
1744
1745 flow_rule_match_ip(rule, &match);
1746 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn,
1747 match.mask->tos & 0x3);
1748 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn,
1749 match.key->tos & 0x3);
1750
1751 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp,
1752 match.mask->tos >> 2);
1753 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp,
1754 match.key->tos >> 2);
1755
1756 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit,
1757 match.mask->ttl);
1758 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit,
1759 match.key->ttl);
1760
1761 if (match.mask->ttl &&
1762 !MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
1763 ft_field_support.outer_ipv4_ttl)) {
1764 NL_SET_ERR_MSG_MOD(extack,
1765 "Matching on TTL is not supported");
1766 return -EOPNOTSUPP;
1767 }
1768
1769 if (match.mask->tos || match.mask->ttl)
1770 *match_level = MLX5_MATCH_L3;
1771 }
1772
1773
1774
1775 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
1776 struct flow_match_ports match;
1777
1778 flow_rule_match_ports(rule, &match);
1779 switch (ip_proto) {
1780 case IPPROTO_TCP:
1781 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1782 tcp_sport, ntohs(match.mask->src));
1783 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1784 tcp_sport, ntohs(match.key->src));
1785
1786 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1787 tcp_dport, ntohs(match.mask->dst));
1788 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1789 tcp_dport, ntohs(match.key->dst));
1790 break;
1791
1792 case IPPROTO_UDP:
1793 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1794 udp_sport, ntohs(match.mask->src));
1795 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1796 udp_sport, ntohs(match.key->src));
1797
1798 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1799 udp_dport, ntohs(match.mask->dst));
1800 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1801 udp_dport, ntohs(match.key->dst));
1802 break;
1803 default:
1804 NL_SET_ERR_MSG_MOD(extack,
1805 "Only UDP and TCP transports are supported for L4 matching");
1806 netdev_err(priv->netdev,
1807 "Only UDP and TCP transport are supported\n");
1808 return -EINVAL;
1809 }
1810
1811 if (match.mask->src || match.mask->dst)
1812 *match_level = MLX5_MATCH_L4;
1813 }
1814
1815 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) {
1816 struct flow_match_tcp match;
1817
1818 flow_rule_match_tcp(rule, &match);
1819 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
1820 ntohs(match.mask->flags));
1821 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
1822 ntohs(match.key->flags));
1823
1824 if (match.mask->flags)
1825 *match_level = MLX5_MATCH_L4;
1826 }
1827
1828 return 0;
1829}
1830
1831static int parse_cls_flower(struct mlx5e_priv *priv,
1832 struct mlx5e_tc_flow *flow,
1833 struct mlx5_flow_spec *spec,
1834 struct flow_cls_offload *f,
1835 struct net_device *filter_dev)
1836{
1837 u8 inner_match_level, outer_match_level, non_tunnel_match_level;
1838 struct netlink_ext_ack *extack = f->common.extack;
1839 struct mlx5_core_dev *dev = priv->mdev;
1840 struct mlx5_eswitch *esw = dev->priv.eswitch;
1841 struct mlx5e_rep_priv *rpriv = priv->ppriv;
1842 struct mlx5_eswitch_rep *rep;
1843 int err;
1844
1845 inner_match_level = MLX5_MATCH_NONE;
1846 outer_match_level = MLX5_MATCH_NONE;
1847
1848 err = __parse_cls_flower(priv, spec, f, filter_dev, &inner_match_level,
1849 &outer_match_level);
1850 non_tunnel_match_level = (inner_match_level == MLX5_MATCH_NONE) ?
1851 outer_match_level : inner_match_level;
1852
1853 if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH)) {
1854 rep = rpriv->rep;
1855 if (rep->vport != MLX5_VPORT_UPLINK &&
1856 (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
1857 esw->offloads.inline_mode < non_tunnel_match_level)) {
1858 NL_SET_ERR_MSG_MOD(extack,
1859 "Flow is not offloaded due to min inline setting");
1860 netdev_warn(priv->netdev,
1861 "Flow is not offloaded due to min inline setting, required %d actual %d\n",
1862 non_tunnel_match_level, esw->offloads.inline_mode);
1863 return -EOPNOTSUPP;
1864 }
1865 }
1866
1867 if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
1868 flow->esw_attr->inner_match_level = inner_match_level;
1869 flow->esw_attr->outer_match_level = outer_match_level;
1870 } else {
1871 flow->nic_attr->match_level = non_tunnel_match_level;
1872 }
1873
1874 return err;
1875}
1876
1877struct pedit_headers {
1878 struct ethhdr eth;
1879 struct vlan_hdr vlan;
1880 struct iphdr ip4;
1881 struct ipv6hdr ip6;
1882 struct tcphdr tcp;
1883 struct udphdr udp;
1884};
1885
1886struct pedit_headers_action {
1887 struct pedit_headers vals;
1888 struct pedit_headers masks;
1889 u32 pedits;
1890};
1891
1892static int pedit_header_offsets[] = {
1893 [FLOW_ACT_MANGLE_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth),
1894 [FLOW_ACT_MANGLE_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4),
1895 [FLOW_ACT_MANGLE_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6),
1896 [FLOW_ACT_MANGLE_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp),
1897 [FLOW_ACT_MANGLE_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp),
1898};
1899
1900#define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype])
1901
1902static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset,
1903 struct pedit_headers_action *hdrs)
1904{
1905 u32 *curr_pmask, *curr_pval;
1906
1907 curr_pmask = (u32 *)(pedit_header(&hdrs->masks, hdr_type) + offset);
1908 curr_pval = (u32 *)(pedit_header(&hdrs->vals, hdr_type) + offset);
1909
1910 if (*curr_pmask & mask)
1911 goto out_err;
1912
1913 *curr_pmask |= mask;
1914 *curr_pval |= (val & mask);
1915
1916 return 0;
1917
1918out_err:
1919 return -EOPNOTSUPP;
1920}
1921
1922struct mlx5_fields {
1923 u8 field;
1924 u8 size;
1925 u32 offset;
1926 u32 match_offset;
1927};
1928
1929#define OFFLOAD(fw_field, size, field, off, match_field) \
1930 {MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, size, \
1931 offsetof(struct pedit_headers, field) + (off), \
1932 MLX5_BYTE_OFF(fte_match_set_lyr_2_4, match_field)}
1933
1934
1935
1936
1937#define SAME_VAL_MASK(type, valp, maskp, matchvalp, matchmaskp) ({ \
1938 type matchmaskx = *(type *)(matchmaskp); \
1939 type matchvalx = *(type *)(matchvalp); \
1940 type maskx = *(type *)(maskp); \
1941 type valx = *(type *)(valp); \
1942 \
1943 (valx & maskx) == (matchvalx & matchmaskx) && !(maskx & (maskx ^ \
1944 matchmaskx)); \
1945})
1946
1947static bool cmp_val_mask(void *valp, void *maskp, void *matchvalp,
1948 void *matchmaskp, int size)
1949{
1950 bool same = false;
1951
1952 switch (size) {
1953 case sizeof(u8):
1954 same = SAME_VAL_MASK(u8, valp, maskp, matchvalp, matchmaskp);
1955 break;
1956 case sizeof(u16):
1957 same = SAME_VAL_MASK(u16, valp, maskp, matchvalp, matchmaskp);
1958 break;
1959 case sizeof(u32):
1960 same = SAME_VAL_MASK(u32, valp, maskp, matchvalp, matchmaskp);
1961 break;
1962 }
1963
1964 return same;
1965}
1966
1967static struct mlx5_fields fields[] = {
1968 OFFLOAD(DMAC_47_16, 4, eth.h_dest[0], 0, dmac_47_16),
1969 OFFLOAD(DMAC_15_0, 2, eth.h_dest[4], 0, dmac_15_0),
1970 OFFLOAD(SMAC_47_16, 4, eth.h_source[0], 0, smac_47_16),
1971 OFFLOAD(SMAC_15_0, 2, eth.h_source[4], 0, smac_15_0),
1972 OFFLOAD(ETHERTYPE, 2, eth.h_proto, 0, ethertype),
1973 OFFLOAD(FIRST_VID, 2, vlan.h_vlan_TCI, 0, first_vid),
1974
1975 OFFLOAD(IP_TTL, 1, ip4.ttl, 0, ttl_hoplimit),
1976 OFFLOAD(SIPV4, 4, ip4.saddr, 0, src_ipv4_src_ipv6.ipv4_layout.ipv4),
1977 OFFLOAD(DIPV4, 4, ip4.daddr, 0, dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
1978
1979 OFFLOAD(SIPV6_127_96, 4, ip6.saddr.s6_addr32[0], 0,
1980 src_ipv4_src_ipv6.ipv6_layout.ipv6[0]),
1981 OFFLOAD(SIPV6_95_64, 4, ip6.saddr.s6_addr32[1], 0,
1982 src_ipv4_src_ipv6.ipv6_layout.ipv6[4]),
1983 OFFLOAD(SIPV6_63_32, 4, ip6.saddr.s6_addr32[2], 0,
1984 src_ipv4_src_ipv6.ipv6_layout.ipv6[8]),
1985 OFFLOAD(SIPV6_31_0, 4, ip6.saddr.s6_addr32[3], 0,
1986 src_ipv4_src_ipv6.ipv6_layout.ipv6[12]),
1987 OFFLOAD(DIPV6_127_96, 4, ip6.daddr.s6_addr32[0], 0,
1988 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[0]),
1989 OFFLOAD(DIPV6_95_64, 4, ip6.daddr.s6_addr32[1], 0,
1990 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[4]),
1991 OFFLOAD(DIPV6_63_32, 4, ip6.daddr.s6_addr32[2], 0,
1992 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[8]),
1993 OFFLOAD(DIPV6_31_0, 4, ip6.daddr.s6_addr32[3], 0,
1994 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[12]),
1995 OFFLOAD(IPV6_HOPLIMIT, 1, ip6.hop_limit, 0, ttl_hoplimit),
1996
1997 OFFLOAD(TCP_SPORT, 2, tcp.source, 0, tcp_sport),
1998 OFFLOAD(TCP_DPORT, 2, tcp.dest, 0, tcp_dport),
1999 OFFLOAD(TCP_FLAGS, 1, tcp.ack_seq, 5, tcp_flags),
2000
2001 OFFLOAD(UDP_SPORT, 2, udp.source, 0, udp_sport),
2002 OFFLOAD(UDP_DPORT, 2, udp.dest, 0, udp_dport),
2003};
2004
2005
2006
2007
2008
2009static int offload_pedit_fields(struct pedit_headers_action *hdrs,
2010 struct mlx5e_tc_flow_parse_attr *parse_attr,
2011 u32 *action_flags,
2012 struct netlink_ext_ack *extack)
2013{
2014 struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
2015 void *headers_c = get_match_headers_criteria(*action_flags,
2016 &parse_attr->spec);
2017 void *headers_v = get_match_headers_value(*action_flags,
2018 &parse_attr->spec);
2019 int i, action_size, nactions, max_actions, first, last, next_z;
2020 void *s_masks_p, *a_masks_p, *vals_p;
2021 struct mlx5_fields *f;
2022 u8 cmd, field_bsize;
2023 u32 s_mask, a_mask;
2024 unsigned long mask;
2025 __be32 mask_be32;
2026 __be16 mask_be16;
2027 void *action;
2028
2029 set_masks = &hdrs[0].masks;
2030 add_masks = &hdrs[1].masks;
2031 set_vals = &hdrs[0].vals;
2032 add_vals = &hdrs[1].vals;
2033
2034 action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
2035 action = parse_attr->mod_hdr_actions +
2036 parse_attr->num_mod_hdr_actions * action_size;
2037
2038 max_actions = parse_attr->max_mod_hdr_actions;
2039 nactions = parse_attr->num_mod_hdr_actions;
2040
2041 for (i = 0; i < ARRAY_SIZE(fields); i++) {
2042 bool skip;
2043
2044 f = &fields[i];
2045
2046 s_mask = 0;
2047 a_mask = 0;
2048
2049 s_masks_p = (void *)set_masks + f->offset;
2050 a_masks_p = (void *)add_masks + f->offset;
2051
2052 memcpy(&s_mask, s_masks_p, f->size);
2053 memcpy(&a_mask, a_masks_p, f->size);
2054
2055 if (!s_mask && !a_mask)
2056 continue;
2057
2058 if (s_mask && a_mask) {
2059 NL_SET_ERR_MSG_MOD(extack,
2060 "can't set and add to the same HW field");
2061 printk(KERN_WARNING "mlx5: can't set and add to the same HW field (%x)\n", f->field);
2062 return -EOPNOTSUPP;
2063 }
2064
2065 if (nactions == max_actions) {
2066 NL_SET_ERR_MSG_MOD(extack,
2067 "too many pedit actions, can't offload");
2068 printk(KERN_WARNING "mlx5: parsed %d pedit actions, can't do more\n", nactions);
2069 return -EOPNOTSUPP;
2070 }
2071
2072 skip = false;
2073 if (s_mask) {
2074 void *match_mask = headers_c + f->match_offset;
2075 void *match_val = headers_v + f->match_offset;
2076
2077 cmd = MLX5_ACTION_TYPE_SET;
2078 mask = s_mask;
2079 vals_p = (void *)set_vals + f->offset;
2080
2081 if (cmp_val_mask(vals_p, s_masks_p, match_val,
2082 match_mask, f->size))
2083 skip = true;
2084
2085 memset(s_masks_p, 0, f->size);
2086 } else {
2087 u32 zero = 0;
2088
2089 cmd = MLX5_ACTION_TYPE_ADD;
2090 mask = a_mask;
2091 vals_p = (void *)add_vals + f->offset;
2092
2093 if (!memcmp(vals_p, &zero, f->size))
2094 skip = true;
2095
2096 memset(a_masks_p, 0, f->size);
2097 }
2098 if (skip)
2099 continue;
2100
2101 field_bsize = f->size * BITS_PER_BYTE;
2102
2103 if (field_bsize == 32) {
2104 mask_be32 = *(__be32 *)&mask;
2105 mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32));
2106 } else if (field_bsize == 16) {
2107 mask_be16 = *(__be16 *)&mask;
2108 mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16));
2109 }
2110
2111 first = find_first_bit(&mask, field_bsize);
2112 next_z = find_next_zero_bit(&mask, field_bsize, first);
2113 last = find_last_bit(&mask, field_bsize);
2114 if (first < next_z && next_z < last) {
2115 NL_SET_ERR_MSG_MOD(extack,
2116 "rewrite of few sub-fields isn't supported");
2117 printk(KERN_WARNING "mlx5: rewrite of few sub-fields (mask %lx) isn't offloaded\n",
2118 mask);
2119 return -EOPNOTSUPP;
2120 }
2121
2122 MLX5_SET(set_action_in, action, action_type, cmd);
2123 MLX5_SET(set_action_in, action, field, f->field);
2124
2125 if (cmd == MLX5_ACTION_TYPE_SET) {
2126 MLX5_SET(set_action_in, action, offset, first);
2127
2128 MLX5_SET(set_action_in, action, length, (last - first + 1));
2129 }
2130
2131 if (field_bsize == 32)
2132 MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first);
2133 else if (field_bsize == 16)
2134 MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first);
2135 else if (field_bsize == 8)
2136 MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first);
2137
2138 action += action_size;
2139 nactions++;
2140 }
2141
2142 parse_attr->num_mod_hdr_actions = nactions;
2143 return 0;
2144}
2145
2146static int mlx5e_flow_namespace_max_modify_action(struct mlx5_core_dev *mdev,
2147 int namespace)
2148{
2149 if (namespace == MLX5_FLOW_NAMESPACE_FDB)
2150 return MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, max_modify_header_actions);
2151 else
2152 return MLX5_CAP_FLOWTABLE_NIC_RX(mdev, max_modify_header_actions);
2153}
2154
2155static int alloc_mod_hdr_actions(struct mlx5e_priv *priv,
2156 struct pedit_headers_action *hdrs,
2157 int namespace,
2158 struct mlx5e_tc_flow_parse_attr *parse_attr)
2159{
2160 int nkeys, action_size, max_actions;
2161
2162 nkeys = hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits +
2163 hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits;
2164 action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
2165
2166 max_actions = mlx5e_flow_namespace_max_modify_action(priv->mdev, namespace);
2167
2168 max_actions = min(max_actions, nkeys * 16);
2169
2170 parse_attr->mod_hdr_actions = kcalloc(max_actions, action_size, GFP_KERNEL);
2171 if (!parse_attr->mod_hdr_actions)
2172 return -ENOMEM;
2173
2174 parse_attr->max_mod_hdr_actions = max_actions;
2175 return 0;
2176}
2177
2178static const struct pedit_headers zero_masks = {};
2179
2180static int parse_tc_pedit_action(struct mlx5e_priv *priv,
2181 const struct flow_action_entry *act, int namespace,
2182 struct mlx5e_tc_flow_parse_attr *parse_attr,
2183 struct pedit_headers_action *hdrs,
2184 struct netlink_ext_ack *extack)
2185{
2186 u8 cmd = (act->id == FLOW_ACTION_MANGLE) ? 0 : 1;
2187 int err = -EOPNOTSUPP;
2188 u32 mask, val, offset;
2189 u8 htype;
2190
2191 htype = act->mangle.htype;
2192 err = -EOPNOTSUPP;
2193
2194 if (htype == FLOW_ACT_MANGLE_UNSPEC) {
2195 NL_SET_ERR_MSG_MOD(extack, "legacy pedit isn't offloaded");
2196 goto out_err;
2197 }
2198
2199 if (!mlx5e_flow_namespace_max_modify_action(priv->mdev, namespace)) {
2200 NL_SET_ERR_MSG_MOD(extack,
2201 "The pedit offload action is not supported");
2202 goto out_err;
2203 }
2204
2205 mask = act->mangle.mask;
2206 val = act->mangle.val;
2207 offset = act->mangle.offset;
2208
2209 err = set_pedit_val(htype, ~mask, val, offset, &hdrs[cmd]);
2210 if (err)
2211 goto out_err;
2212
2213 hdrs[cmd].pedits++;
2214
2215 return 0;
2216out_err:
2217 return err;
2218}
2219
2220static int alloc_tc_pedit_action(struct mlx5e_priv *priv, int namespace,
2221 struct mlx5e_tc_flow_parse_attr *parse_attr,
2222 struct pedit_headers_action *hdrs,
2223 u32 *action_flags,
2224 struct netlink_ext_ack *extack)
2225{
2226 struct pedit_headers *cmd_masks;
2227 int err;
2228 u8 cmd;
2229
2230 if (!parse_attr->mod_hdr_actions) {
2231 err = alloc_mod_hdr_actions(priv, hdrs, namespace, parse_attr);
2232 if (err)
2233 goto out_err;
2234 }
2235
2236 err = offload_pedit_fields(hdrs, parse_attr, action_flags, extack);
2237 if (err < 0)
2238 goto out_dealloc_parsed_actions;
2239
2240 for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
2241 cmd_masks = &hdrs[cmd].masks;
2242 if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
2243 NL_SET_ERR_MSG_MOD(extack,
2244 "attempt to offload an unsupported field");
2245 netdev_warn(priv->netdev, "attempt to offload an unsupported field (cmd %d)\n", cmd);
2246 print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
2247 16, 1, cmd_masks, sizeof(zero_masks), true);
2248 err = -EOPNOTSUPP;
2249 goto out_dealloc_parsed_actions;
2250 }
2251 }
2252
2253 return 0;
2254
2255out_dealloc_parsed_actions:
2256 kfree(parse_attr->mod_hdr_actions);
2257out_err:
2258 return err;
2259}
2260
2261static bool csum_offload_supported(struct mlx5e_priv *priv,
2262 u32 action,
2263 u32 update_flags,
2264 struct netlink_ext_ack *extack)
2265{
2266 u32 prot_flags = TCA_CSUM_UPDATE_FLAG_IPV4HDR | TCA_CSUM_UPDATE_FLAG_TCP |
2267 TCA_CSUM_UPDATE_FLAG_UDP;
2268
2269
2270 if (!(action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)) {
2271 NL_SET_ERR_MSG_MOD(extack,
2272 "TC csum action is only offloaded with pedit");
2273 netdev_warn(priv->netdev,
2274 "TC csum action is only offloaded with pedit\n");
2275 return false;
2276 }
2277
2278 if (update_flags & ~prot_flags) {
2279 NL_SET_ERR_MSG_MOD(extack,
2280 "can't offload TC csum action for some header/s");
2281 netdev_warn(priv->netdev,
2282 "can't offload TC csum action for some header/s - flags %#x\n",
2283 update_flags);
2284 return false;
2285 }
2286
2287 return true;
2288}
2289
2290struct ip_ttl_word {
2291 __u8 ttl;
2292 __u8 protocol;
2293 __sum16 check;
2294};
2295
2296struct ipv6_hoplimit_word {
2297 __be16 payload_len;
2298 __u8 nexthdr;
2299 __u8 hop_limit;
2300};
2301
2302static bool is_action_keys_supported(const struct flow_action_entry *act)
2303{
2304 u32 mask, offset;
2305 u8 htype;
2306
2307 htype = act->mangle.htype;
2308 offset = act->mangle.offset;
2309 mask = ~act->mangle.mask;
2310
2311
2312
2313
2314 if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP4) {
2315 struct ip_ttl_word *ttl_word =
2316 (struct ip_ttl_word *)&mask;
2317
2318 if (offset != offsetof(struct iphdr, ttl) ||
2319 ttl_word->protocol ||
2320 ttl_word->check) {
2321 return true;
2322 }
2323 } else if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP6) {
2324 struct ipv6_hoplimit_word *hoplimit_word =
2325 (struct ipv6_hoplimit_word *)&mask;
2326
2327 if (offset != offsetof(struct ipv6hdr, payload_len) ||
2328 hoplimit_word->payload_len ||
2329 hoplimit_word->nexthdr) {
2330 return true;
2331 }
2332 }
2333 return false;
2334}
2335
2336static bool modify_header_match_supported(struct mlx5_flow_spec *spec,
2337 struct flow_action *flow_action,
2338 u32 actions,
2339 struct netlink_ext_ack *extack)
2340{
2341 const struct flow_action_entry *act;
2342 bool modify_ip_header;
2343 void *headers_v;
2344 u16 ethertype;
2345 u8 ip_proto;
2346 int i;
2347
2348 headers_v = get_match_headers_value(actions, spec);
2349 ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
2350
2351
2352 if (ethertype != ETH_P_IP && ethertype != ETH_P_IPV6)
2353 goto out_ok;
2354
2355 modify_ip_header = false;
2356 flow_action_for_each(i, act, flow_action) {
2357 if (act->id != FLOW_ACTION_MANGLE &&
2358 act->id != FLOW_ACTION_ADD)
2359 continue;
2360
2361 if (is_action_keys_supported(act)) {
2362 modify_ip_header = true;
2363 break;
2364 }
2365 }
2366
2367 ip_proto = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_protocol);
2368 if (modify_ip_header && ip_proto != IPPROTO_TCP &&
2369 ip_proto != IPPROTO_UDP && ip_proto != IPPROTO_ICMP) {
2370 NL_SET_ERR_MSG_MOD(extack,
2371 "can't offload re-write of non TCP/UDP");
2372 pr_info("can't offload re-write of ip proto %d\n", ip_proto);
2373 return false;
2374 }
2375
2376out_ok:
2377 return true;
2378}
2379
2380static bool actions_match_supported(struct mlx5e_priv *priv,
2381 struct flow_action *flow_action,
2382 struct mlx5e_tc_flow_parse_attr *parse_attr,
2383 struct mlx5e_tc_flow *flow,
2384 struct netlink_ext_ack *extack)
2385{
2386 u32 actions;
2387
2388 if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
2389 actions = flow->esw_attr->action;
2390 else
2391 actions = flow->nic_attr->action;
2392
2393 if (flow->flags & MLX5E_TC_FLOW_EGRESS &&
2394 !((actions & MLX5_FLOW_CONTEXT_ACTION_DECAP) ||
2395 (actions & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP)))
2396 return false;
2397
2398 if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
2399 return modify_header_match_supported(&parse_attr->spec,
2400 flow_action, actions,
2401 extack);
2402
2403 return true;
2404}
2405
2406static bool same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
2407{
2408 struct mlx5_core_dev *fmdev, *pmdev;
2409 u64 fsystem_guid, psystem_guid;
2410
2411 fmdev = priv->mdev;
2412 pmdev = peer_priv->mdev;
2413
2414 fsystem_guid = mlx5_query_nic_system_image_guid(fmdev);
2415 psystem_guid = mlx5_query_nic_system_image_guid(pmdev);
2416
2417 return (fsystem_guid == psystem_guid);
2418}
2419
2420static int add_vlan_rewrite_action(struct mlx5e_priv *priv, int namespace,
2421 const struct flow_action_entry *act,
2422 struct mlx5e_tc_flow_parse_attr *parse_attr,
2423 struct pedit_headers_action *hdrs,
2424 u32 *action, struct netlink_ext_ack *extack)
2425{
2426 u16 mask16 = VLAN_VID_MASK;
2427 u16 val16 = act->vlan.vid & VLAN_VID_MASK;
2428 const struct flow_action_entry pedit_act = {
2429 .id = FLOW_ACTION_MANGLE,
2430 .mangle.htype = FLOW_ACT_MANGLE_HDR_TYPE_ETH,
2431 .mangle.offset = offsetof(struct vlan_ethhdr, h_vlan_TCI),
2432 .mangle.mask = ~(u32)be16_to_cpu(*(__be16 *)&mask16),
2433 .mangle.val = (u32)be16_to_cpu(*(__be16 *)&val16),
2434 };
2435 u8 match_prio_mask, match_prio_val;
2436 void *headers_c, *headers_v;
2437 int err;
2438
2439 headers_c = get_match_headers_criteria(*action, &parse_attr->spec);
2440 headers_v = get_match_headers_value(*action, &parse_attr->spec);
2441
2442 if (!(MLX5_GET(fte_match_set_lyr_2_4, headers_c, cvlan_tag) &&
2443 MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag))) {
2444 NL_SET_ERR_MSG_MOD(extack,
2445 "VLAN rewrite action must have VLAN protocol match");
2446 return -EOPNOTSUPP;
2447 }
2448
2449 match_prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio);
2450 match_prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio);
2451 if (act->vlan.prio != (match_prio_val & match_prio_mask)) {
2452 NL_SET_ERR_MSG_MOD(extack,
2453 "Changing VLAN prio is not supported");
2454 return -EOPNOTSUPP;
2455 }
2456
2457 err = parse_tc_pedit_action(priv, &pedit_act, namespace, parse_attr,
2458 hdrs, NULL);
2459 *action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
2460
2461 return err;
2462}
2463
2464static int
2465add_vlan_prio_tag_rewrite_action(struct mlx5e_priv *priv,
2466 struct mlx5e_tc_flow_parse_attr *parse_attr,
2467 struct pedit_headers_action *hdrs,
2468 u32 *action, struct netlink_ext_ack *extack)
2469{
2470 const struct flow_action_entry prio_tag_act = {
2471 .vlan.vid = 0,
2472 .vlan.prio =
2473 MLX5_GET(fte_match_set_lyr_2_4,
2474 get_match_headers_value(*action,
2475 &parse_attr->spec),
2476 first_prio) &
2477 MLX5_GET(fte_match_set_lyr_2_4,
2478 get_match_headers_criteria(*action,
2479 &parse_attr->spec),
2480 first_prio),
2481 };
2482
2483 return add_vlan_rewrite_action(priv, MLX5_FLOW_NAMESPACE_FDB,
2484 &prio_tag_act, parse_attr, hdrs, action,
2485 extack);
2486}
2487
2488static int parse_tc_nic_actions(struct mlx5e_priv *priv,
2489 struct flow_action *flow_action,
2490 struct mlx5e_tc_flow_parse_attr *parse_attr,
2491 struct mlx5e_tc_flow *flow,
2492 struct netlink_ext_ack *extack)
2493{
2494 struct mlx5_nic_flow_attr *attr = flow->nic_attr;
2495 struct pedit_headers_action hdrs[2] = {};
2496 const struct flow_action_entry *act;
2497 u32 action = 0;
2498 int err, i;
2499
2500 if (!flow_action_has_entries(flow_action))
2501 return -EINVAL;
2502
2503 attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
2504
2505 flow_action_for_each(i, act, flow_action) {
2506 switch (act->id) {
2507 case FLOW_ACTION_DROP:
2508 action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
2509 if (MLX5_CAP_FLOWTABLE(priv->mdev,
2510 flow_table_properties_nic_receive.flow_counter))
2511 action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
2512 break;
2513 case FLOW_ACTION_MANGLE:
2514 case FLOW_ACTION_ADD:
2515 err = parse_tc_pedit_action(priv, act, MLX5_FLOW_NAMESPACE_KERNEL,
2516 parse_attr, hdrs, extack);
2517 if (err)
2518 return err;
2519
2520 action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR |
2521 MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2522 break;
2523 case FLOW_ACTION_VLAN_MANGLE:
2524 err = add_vlan_rewrite_action(priv,
2525 MLX5_FLOW_NAMESPACE_KERNEL,
2526 act, parse_attr, hdrs,
2527 &action, extack);
2528 if (err)
2529 return err;
2530
2531 break;
2532 case FLOW_ACTION_CSUM:
2533 if (csum_offload_supported(priv, action,
2534 act->csum_flags,
2535 extack))
2536 break;
2537
2538 return -EOPNOTSUPP;
2539 case FLOW_ACTION_REDIRECT: {
2540 struct net_device *peer_dev = act->dev;
2541
2542 if (priv->netdev->netdev_ops == peer_dev->netdev_ops &&
2543 same_hw_devs(priv, netdev_priv(peer_dev))) {
2544 parse_attr->mirred_ifindex[0] = peer_dev->ifindex;
2545 flow->flags |= MLX5E_TC_FLOW_HAIRPIN;
2546 action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
2547 MLX5_FLOW_CONTEXT_ACTION_COUNT;
2548 } else {
2549 NL_SET_ERR_MSG_MOD(extack,
2550 "device is not on same HW, can't offload");
2551 netdev_warn(priv->netdev, "device %s not on same HW, can't offload\n",
2552 peer_dev->name);
2553 return -EINVAL;
2554 }
2555 }
2556 break;
2557 case FLOW_ACTION_MARK: {
2558 u32 mark = act->mark;
2559
2560 if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
2561 NL_SET_ERR_MSG_MOD(extack,
2562 "Bad flow mark - only 16 bit is supported");
2563 return -EINVAL;
2564 }
2565
2566 attr->flow_tag = mark;
2567 action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2568 }
2569 break;
2570 default:
2571 NL_SET_ERR_MSG_MOD(extack, "The offload action is not supported");
2572 return -EOPNOTSUPP;
2573 }
2574 }
2575
2576 if (hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits ||
2577 hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) {
2578 err = alloc_tc_pedit_action(priv, MLX5_FLOW_NAMESPACE_KERNEL,
2579 parse_attr, hdrs, &action, extack);
2580 if (err)
2581 return err;
2582
2583
2584
2585 if (parse_attr->num_mod_hdr_actions == 0) {
2586 action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
2587 kfree(parse_attr->mod_hdr_actions);
2588 }
2589 }
2590
2591 attr->action = action;
2592 if (!actions_match_supported(priv, flow_action, parse_attr, flow, extack))
2593 return -EOPNOTSUPP;
2594
2595 return 0;
2596}
2597
2598struct encap_key {
2599 const struct ip_tunnel_key *ip_tun_key;
2600 struct mlx5e_tc_tunnel *tc_tunnel;
2601};
2602
2603static inline int cmp_encap_info(struct encap_key *a,
2604 struct encap_key *b)
2605{
2606 return memcmp(a->ip_tun_key, b->ip_tun_key, sizeof(*a->ip_tun_key)) ||
2607 a->tc_tunnel->tunnel_type != b->tc_tunnel->tunnel_type;
2608}
2609
2610static inline int hash_encap_info(struct encap_key *key)
2611{
2612 return jhash(key->ip_tun_key, sizeof(*key->ip_tun_key),
2613 key->tc_tunnel->tunnel_type);
2614}
2615
2616
2617static bool is_merged_eswitch_dev(struct mlx5e_priv *priv,
2618 struct net_device *peer_netdev)
2619{
2620 struct mlx5e_priv *peer_priv;
2621
2622 peer_priv = netdev_priv(peer_netdev);
2623
2624 return (MLX5_CAP_ESW(priv->mdev, merged_eswitch) &&
2625 mlx5e_eswitch_rep(priv->netdev) &&
2626 mlx5e_eswitch_rep(peer_netdev) &&
2627 same_hw_devs(priv, peer_priv));
2628}
2629
2630
2631
2632static int mlx5e_attach_encap(struct mlx5e_priv *priv,
2633 struct mlx5e_tc_flow *flow,
2634 struct net_device *mirred_dev,
2635 int out_index,
2636 struct netlink_ext_ack *extack,
2637 struct net_device **encap_dev,
2638 bool *encap_valid)
2639{
2640 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2641 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
2642 struct mlx5e_tc_flow_parse_attr *parse_attr;
2643 const struct ip_tunnel_info *tun_info;
2644 struct encap_key key, e_key;
2645 struct mlx5e_encap_entry *e;
2646 unsigned short family;
2647 uintptr_t hash_key;
2648 bool found = false;
2649 int err = 0;
2650
2651 parse_attr = attr->parse_attr;
2652 tun_info = parse_attr->tun_info[out_index];
2653 family = ip_tunnel_info_af(tun_info);
2654 key.ip_tun_key = &tun_info->key;
2655 key.tc_tunnel = mlx5e_get_tc_tun(mirred_dev);
2656 if (!key.tc_tunnel) {
2657 NL_SET_ERR_MSG_MOD(extack, "Unsupported tunnel");
2658 return -EOPNOTSUPP;
2659 }
2660
2661 hash_key = hash_encap_info(&key);
2662
2663 hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
2664 encap_hlist, hash_key) {
2665 e_key.ip_tun_key = &e->tun_info->key;
2666 e_key.tc_tunnel = e->tunnel;
2667 if (!cmp_encap_info(&e_key, &key)) {
2668 found = true;
2669 break;
2670 }
2671 }
2672
2673
2674 if (found)
2675 goto attach_flow;
2676
2677 e = kzalloc(sizeof(*e), GFP_KERNEL);
2678 if (!e)
2679 return -ENOMEM;
2680
2681 e->tun_info = tun_info;
2682 err = mlx5e_tc_tun_init_encap_attr(mirred_dev, priv, e, extack);
2683 if (err)
2684 goto out_err;
2685
2686 INIT_LIST_HEAD(&e->flows);
2687
2688 if (family == AF_INET)
2689 err = mlx5e_tc_tun_create_header_ipv4(priv, mirred_dev, e);
2690 else if (family == AF_INET6)
2691 err = mlx5e_tc_tun_create_header_ipv6(priv, mirred_dev, e);
2692
2693 if (err)
2694 goto out_err;
2695
2696 hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
2697
2698attach_flow:
2699 list_add(&flow->encaps[out_index].list, &e->flows);
2700 flow->encaps[out_index].index = out_index;
2701 *encap_dev = e->out_dev;
2702 if (e->flags & MLX5_ENCAP_ENTRY_VALID) {
2703 attr->dests[out_index].encap_id = e->encap_id;
2704 attr->dests[out_index].flags |= MLX5_ESW_DEST_ENCAP_VALID;
2705 *encap_valid = true;
2706 } else {
2707 *encap_valid = false;
2708 }
2709
2710 return err;
2711
2712out_err:
2713 kfree(e);
2714 return err;
2715}
2716
2717static int parse_tc_vlan_action(struct mlx5e_priv *priv,
2718 const struct flow_action_entry *act,
2719 struct mlx5_esw_flow_attr *attr,
2720 u32 *action)
2721{
2722 u8 vlan_idx = attr->total_vlan;
2723
2724 if (vlan_idx >= MLX5_FS_VLAN_DEPTH)
2725 return -EOPNOTSUPP;
2726
2727 switch (act->id) {
2728 case FLOW_ACTION_VLAN_POP:
2729 if (vlan_idx) {
2730 if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
2731 MLX5_FS_VLAN_DEPTH))
2732 return -EOPNOTSUPP;
2733
2734 *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP_2;
2735 } else {
2736 *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
2737 }
2738 break;
2739 case FLOW_ACTION_VLAN_PUSH:
2740 attr->vlan_vid[vlan_idx] = act->vlan.vid;
2741 attr->vlan_prio[vlan_idx] = act->vlan.prio;
2742 attr->vlan_proto[vlan_idx] = act->vlan.proto;
2743 if (!attr->vlan_proto[vlan_idx])
2744 attr->vlan_proto[vlan_idx] = htons(ETH_P_8021Q);
2745
2746 if (vlan_idx) {
2747 if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
2748 MLX5_FS_VLAN_DEPTH))
2749 return -EOPNOTSUPP;
2750
2751 *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH_2;
2752 } else {
2753 if (!mlx5_eswitch_vlan_actions_supported(priv->mdev, 1) &&
2754 (act->vlan.proto != htons(ETH_P_8021Q) ||
2755 act->vlan.prio))
2756 return -EOPNOTSUPP;
2757
2758 *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
2759 }
2760 break;
2761 default:
2762 return -EINVAL;
2763 }
2764
2765 attr->total_vlan = vlan_idx + 1;
2766
2767 return 0;
2768}
2769
2770static int add_vlan_push_action(struct mlx5e_priv *priv,
2771 struct mlx5_esw_flow_attr *attr,
2772 struct net_device **out_dev,
2773 u32 *action)
2774{
2775 struct net_device *vlan_dev = *out_dev;
2776 struct flow_action_entry vlan_act = {
2777 .id = FLOW_ACTION_VLAN_PUSH,
2778 .vlan.vid = vlan_dev_vlan_id(vlan_dev),
2779 .vlan.proto = vlan_dev_vlan_proto(vlan_dev),
2780 .vlan.prio = 0,
2781 };
2782 int err;
2783
2784 err = parse_tc_vlan_action(priv, &vlan_act, attr, action);
2785 if (err)
2786 return err;
2787
2788 *out_dev = dev_get_by_index_rcu(dev_net(vlan_dev),
2789 dev_get_iflink(vlan_dev));
2790 if (is_vlan_dev(*out_dev))
2791 err = add_vlan_push_action(priv, attr, out_dev, action);
2792
2793 return err;
2794}
2795
2796static int add_vlan_pop_action(struct mlx5e_priv *priv,
2797 struct mlx5_esw_flow_attr *attr,
2798 u32 *action)
2799{
2800 int nest_level = vlan_get_encap_level(attr->parse_attr->filter_dev);
2801 struct flow_action_entry vlan_act = {
2802 .id = FLOW_ACTION_VLAN_POP,
2803 };
2804 int err = 0;
2805
2806 while (nest_level--) {
2807 err = parse_tc_vlan_action(priv, &vlan_act, attr, action);
2808 if (err)
2809 return err;
2810 }
2811
2812 return err;
2813}
2814
2815bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv,
2816 struct net_device *out_dev)
2817{
2818 if (is_merged_eswitch_dev(priv, out_dev))
2819 return true;
2820
2821 return mlx5e_eswitch_rep(out_dev) &&
2822 same_hw_devs(priv, netdev_priv(out_dev));
2823}
2824
2825static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
2826 struct flow_action *flow_action,
2827 struct mlx5e_tc_flow *flow,
2828 struct netlink_ext_ack *extack)
2829{
2830 struct pedit_headers_action hdrs[2] = {};
2831 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2832 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
2833 struct mlx5e_tc_flow_parse_attr *parse_attr = attr->parse_attr;
2834 struct mlx5e_rep_priv *rpriv = priv->ppriv;
2835 const struct ip_tunnel_info *info = NULL;
2836 const struct flow_action_entry *act;
2837 bool encap = false;
2838 u32 action = 0;
2839 int err, i;
2840
2841 if (!flow_action_has_entries(flow_action))
2842 return -EINVAL;
2843
2844 flow_action_for_each(i, act, flow_action) {
2845 switch (act->id) {
2846 case FLOW_ACTION_DROP:
2847 action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
2848 MLX5_FLOW_CONTEXT_ACTION_COUNT;
2849 break;
2850 case FLOW_ACTION_MANGLE:
2851 case FLOW_ACTION_ADD:
2852 err = parse_tc_pedit_action(priv, act, MLX5_FLOW_NAMESPACE_FDB,
2853 parse_attr, hdrs, extack);
2854 if (err)
2855 return err;
2856
2857 action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
2858 attr->split_count = attr->out_count;
2859 break;
2860 case FLOW_ACTION_CSUM:
2861 if (csum_offload_supported(priv, action,
2862 act->csum_flags, extack))
2863 break;
2864
2865 return -EOPNOTSUPP;
2866 case FLOW_ACTION_REDIRECT:
2867 case FLOW_ACTION_MIRRED: {
2868 struct mlx5e_priv *out_priv;
2869 struct net_device *out_dev;
2870
2871 out_dev = act->dev;
2872 if (!out_dev) {
2873
2874
2875
2876
2877 return -EINVAL;
2878 }
2879
2880 if (attr->out_count >= MLX5_MAX_FLOW_FWD_VPORTS) {
2881 NL_SET_ERR_MSG_MOD(extack,
2882 "can't support more output ports, can't offload forwarding");
2883 pr_err("can't support more than %d output ports, can't offload forwarding\n",
2884 attr->out_count);
2885 return -EOPNOTSUPP;
2886 }
2887
2888 action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
2889 MLX5_FLOW_CONTEXT_ACTION_COUNT;
2890 if (netdev_port_same_parent_id(priv->netdev, out_dev)) {
2891 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2892 struct net_device *uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH);
2893 struct net_device *uplink_upper = netdev_master_upper_dev_get(uplink_dev);
2894
2895 if (uplink_upper &&
2896 netif_is_lag_master(uplink_upper) &&
2897 uplink_upper == out_dev)
2898 out_dev = uplink_dev;
2899
2900 if (is_vlan_dev(out_dev)) {
2901 err = add_vlan_push_action(priv, attr,
2902 &out_dev,
2903 &action);
2904 if (err)
2905 return err;
2906 }
2907
2908 if (is_vlan_dev(parse_attr->filter_dev)) {
2909 err = add_vlan_pop_action(priv, attr,
2910 &action);
2911 if (err)
2912 return err;
2913 }
2914
2915 if (!mlx5e_is_valid_eswitch_fwd_dev(priv, out_dev)) {
2916 NL_SET_ERR_MSG_MOD(extack,
2917 "devices are not on same switch HW, can't offload forwarding");
2918 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
2919 priv->netdev->name, out_dev->name);
2920 return -EOPNOTSUPP;
2921 }
2922
2923 out_priv = netdev_priv(out_dev);
2924 rpriv = out_priv->ppriv;
2925 attr->dests[attr->out_count].rep = rpriv->rep;
2926 attr->dests[attr->out_count].mdev = out_priv->mdev;
2927 attr->out_count++;
2928 } else if (encap) {
2929 parse_attr->mirred_ifindex[attr->out_count] =
2930 out_dev->ifindex;
2931 parse_attr->tun_info[attr->out_count] = info;
2932 encap = false;
2933 attr->dests[attr->out_count].flags |=
2934 MLX5_ESW_DEST_ENCAP;
2935 attr->out_count++;
2936
2937
2938
2939 } else if (parse_attr->filter_dev != priv->netdev) {
2940
2941
2942
2943
2944
2945 return -EINVAL;
2946 } else {
2947 NL_SET_ERR_MSG_MOD(extack,
2948 "devices are not on same switch HW, can't offload forwarding");
2949 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
2950 priv->netdev->name, out_dev->name);
2951 return -EINVAL;
2952 }
2953 }
2954 break;
2955 case FLOW_ACTION_TUNNEL_ENCAP:
2956 info = act->tunnel;
2957 if (info)
2958 encap = true;
2959 else
2960 return -EOPNOTSUPP;
2961
2962 break;
2963 case FLOW_ACTION_VLAN_PUSH:
2964 case FLOW_ACTION_VLAN_POP:
2965 if (act->id == FLOW_ACTION_VLAN_PUSH &&
2966 (action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP)) {
2967
2968 action &= ~MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
2969 err = add_vlan_rewrite_action(priv,
2970 MLX5_FLOW_NAMESPACE_FDB,
2971 act, parse_attr, hdrs,
2972 &action, extack);
2973 } else {
2974 err = parse_tc_vlan_action(priv, act, attr, &action);
2975 }
2976 if (err)
2977 return err;
2978
2979 attr->split_count = attr->out_count;
2980 break;
2981 case FLOW_ACTION_VLAN_MANGLE:
2982 err = add_vlan_rewrite_action(priv,
2983 MLX5_FLOW_NAMESPACE_FDB,
2984 act, parse_attr, hdrs,
2985 &action, extack);
2986 if (err)
2987 return err;
2988
2989 attr->split_count = attr->out_count;
2990 break;
2991 case FLOW_ACTION_TUNNEL_DECAP:
2992 action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
2993 break;
2994 case FLOW_ACTION_GOTO: {
2995 u32 dest_chain = act->chain_index;
2996 u32 max_chain = mlx5_eswitch_get_chain_range(esw);
2997
2998 if (dest_chain <= attr->chain) {
2999 NL_SET_ERR_MSG(extack, "Goto earlier chain isn't supported");
3000 return -EOPNOTSUPP;
3001 }
3002 if (dest_chain > max_chain) {
3003 NL_SET_ERR_MSG(extack, "Requested destination chain is out of supported range");
3004 return -EOPNOTSUPP;
3005 }
3006 action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
3007 attr->dest_chain = dest_chain;
3008 break;
3009 }
3010 default:
3011 NL_SET_ERR_MSG_MOD(extack, "The offload action is not supported");
3012 return -EOPNOTSUPP;
3013 }
3014 }
3015
3016 if (MLX5_CAP_GEN(esw->dev, prio_tag_required) &&
3017 action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) {
3018
3019
3020
3021 action &= ~MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
3022 err = add_vlan_prio_tag_rewrite_action(priv, parse_attr, hdrs,
3023 &action, extack);
3024 if (err)
3025 return err;
3026 }
3027
3028 if (hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits ||
3029 hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) {
3030 err = alloc_tc_pedit_action(priv, MLX5_FLOW_NAMESPACE_FDB,
3031 parse_attr, hdrs, &action, extack);
3032 if (err)
3033 return err;
3034
3035
3036
3037
3038 if (parse_attr->num_mod_hdr_actions == 0) {
3039 action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
3040 kfree(parse_attr->mod_hdr_actions);
3041 if (!((action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) ||
3042 (action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH)))
3043 attr->split_count = 0;
3044 }
3045 }
3046
3047 attr->action = action;
3048 if (!actions_match_supported(priv, flow_action, parse_attr, flow, extack))
3049 return -EOPNOTSUPP;
3050
3051 if (attr->dest_chain) {
3052 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
3053 NL_SET_ERR_MSG(extack, "Mirroring goto chain rules isn't supported");
3054 return -EOPNOTSUPP;
3055 }
3056 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
3057 }
3058
3059 if (attr->split_count > 0 && !mlx5_esw_has_fwd_fdb(priv->mdev)) {
3060 NL_SET_ERR_MSG_MOD(extack,
3061 "current firmware doesn't support split rule for port mirroring");
3062 netdev_warn_once(priv->netdev, "current firmware doesn't support split rule for port mirroring\n");
3063 return -EOPNOTSUPP;
3064 }
3065
3066 return 0;
3067}
3068
3069static void get_flags(int flags, u16 *flow_flags)
3070{
3071 u16 __flow_flags = 0;
3072
3073 if (flags & MLX5E_TC_INGRESS)
3074 __flow_flags |= MLX5E_TC_FLOW_INGRESS;
3075 if (flags & MLX5E_TC_EGRESS)
3076 __flow_flags |= MLX5E_TC_FLOW_EGRESS;
3077
3078 if (flags & MLX5E_TC_ESW_OFFLOAD)
3079 __flow_flags |= MLX5E_TC_FLOW_ESWITCH;
3080 if (flags & MLX5E_TC_NIC_OFFLOAD)
3081 __flow_flags |= MLX5E_TC_FLOW_NIC;
3082
3083 *flow_flags = __flow_flags;
3084}
3085
3086static const struct rhashtable_params tc_ht_params = {
3087 .head_offset = offsetof(struct mlx5e_tc_flow, node),
3088 .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
3089 .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
3090 .automatic_shrinking = true,
3091};
3092
3093static struct rhashtable *get_tc_ht(struct mlx5e_priv *priv, int flags)
3094{
3095 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3096 struct mlx5e_rep_priv *uplink_rpriv;
3097
3098 if (flags & MLX5E_TC_ESW_OFFLOAD) {
3099 uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
3100 return &uplink_rpriv->uplink_priv.tc_ht;
3101 } else
3102 return &priv->fs.tc.ht;
3103}
3104
3105static bool is_peer_flow_needed(struct mlx5e_tc_flow *flow)
3106{
3107 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
3108 bool is_rep_ingress = attr->in_rep->vport != MLX5_VPORT_UPLINK &&
3109 flow->flags & MLX5E_TC_FLOW_INGRESS;
3110 bool act_is_encap = !!(attr->action &
3111 MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT);
3112 bool esw_paired = mlx5_devcom_is_paired(attr->in_mdev->priv.devcom,
3113 MLX5_DEVCOM_ESW_OFFLOADS);
3114
3115 if (!esw_paired)
3116 return false;
3117
3118 if ((mlx5_lag_is_sriov(attr->in_mdev) ||
3119 mlx5_lag_is_multipath(attr->in_mdev)) &&
3120 (is_rep_ingress || act_is_encap))
3121 return true;
3122
3123 return false;
3124}
3125
3126static int
3127mlx5e_alloc_flow(struct mlx5e_priv *priv, int attr_size,
3128 struct flow_cls_offload *f, u16 flow_flags,
3129 struct mlx5e_tc_flow_parse_attr **__parse_attr,
3130 struct mlx5e_tc_flow **__flow)
3131{
3132 struct mlx5e_tc_flow_parse_attr *parse_attr;
3133 struct mlx5e_tc_flow *flow;
3134 int err;
3135
3136 flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
3137 parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
3138 if (!parse_attr || !flow) {
3139 err = -ENOMEM;
3140 goto err_free;
3141 }
3142
3143 flow->cookie = f->cookie;
3144 flow->flags = flow_flags;
3145 flow->priv = priv;
3146
3147 *__flow = flow;
3148 *__parse_attr = parse_attr;
3149
3150 return 0;
3151
3152err_free:
3153 kfree(flow);
3154 kvfree(parse_attr);
3155 return err;
3156}
3157
3158static void
3159mlx5e_flow_esw_attr_init(struct mlx5_esw_flow_attr *esw_attr,
3160 struct mlx5e_priv *priv,
3161 struct mlx5e_tc_flow_parse_attr *parse_attr,
3162 struct flow_cls_offload *f,
3163 struct mlx5_eswitch_rep *in_rep,
3164 struct mlx5_core_dev *in_mdev)
3165{
3166 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3167
3168 esw_attr->parse_attr = parse_attr;
3169 esw_attr->chain = f->common.chain_index;
3170 esw_attr->prio = f->common.prio;
3171
3172 esw_attr->in_rep = in_rep;
3173 esw_attr->in_mdev = in_mdev;
3174
3175 if (MLX5_CAP_ESW(esw->dev, counter_eswitch_affinity) ==
3176 MLX5_COUNTER_SOURCE_ESWITCH)
3177 esw_attr->counter_dev = in_mdev;
3178 else
3179 esw_attr->counter_dev = priv->mdev;
3180}
3181
3182static struct mlx5e_tc_flow *
3183__mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
3184 struct flow_cls_offload *f,
3185 u16 flow_flags,
3186 struct net_device *filter_dev,
3187 struct mlx5_eswitch_rep *in_rep,
3188 struct mlx5_core_dev *in_mdev)
3189{
3190 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
3191 struct netlink_ext_ack *extack = f->common.extack;
3192 struct mlx5e_tc_flow_parse_attr *parse_attr;
3193 struct mlx5e_tc_flow *flow;
3194 int attr_size, err;
3195
3196 flow_flags |= MLX5E_TC_FLOW_ESWITCH;
3197 attr_size = sizeof(struct mlx5_esw_flow_attr);
3198 err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
3199 &parse_attr, &flow);
3200 if (err)
3201 goto out;
3202
3203 parse_attr->filter_dev = filter_dev;
3204 mlx5e_flow_esw_attr_init(flow->esw_attr,
3205 priv, parse_attr,
3206 f, in_rep, in_mdev);
3207
3208 err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
3209 f, filter_dev);
3210 if (err)
3211 goto err_free;
3212
3213 err = parse_tc_fdb_actions(priv, &rule->action, flow, extack);
3214 if (err)
3215 goto err_free;
3216
3217 err = mlx5e_tc_add_fdb_flow(priv, flow, extack);
3218 if (err) {
3219 if (!(err == -ENETUNREACH && mlx5_lag_is_multipath(in_mdev)))
3220 goto err_free;
3221
3222 add_unready_flow(flow);
3223 }
3224
3225 return flow;
3226
3227err_free:
3228 kfree(flow);
3229 kvfree(parse_attr);
3230out:
3231 return ERR_PTR(err);
3232}
3233
3234static int mlx5e_tc_add_fdb_peer_flow(struct flow_cls_offload *f,
3235 struct mlx5e_tc_flow *flow,
3236 u16 flow_flags)
3237{
3238 struct mlx5e_priv *priv = flow->priv, *peer_priv;
3239 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch, *peer_esw;
3240 struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
3241 struct mlx5e_tc_flow_parse_attr *parse_attr;
3242 struct mlx5e_rep_priv *peer_urpriv;
3243 struct mlx5e_tc_flow *peer_flow;
3244 struct mlx5_core_dev *in_mdev;
3245 int err = 0;
3246
3247 peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
3248 if (!peer_esw)
3249 return -ENODEV;
3250
3251 peer_urpriv = mlx5_eswitch_get_uplink_priv(peer_esw, REP_ETH);
3252 peer_priv = netdev_priv(peer_urpriv->netdev);
3253
3254
3255
3256
3257
3258
3259 if (flow->esw_attr->in_rep->vport == MLX5_VPORT_UPLINK)
3260 in_mdev = peer_priv->mdev;
3261 else
3262 in_mdev = priv->mdev;
3263
3264 parse_attr = flow->esw_attr->parse_attr;
3265 peer_flow = __mlx5e_add_fdb_flow(peer_priv, f, flow_flags,
3266 parse_attr->filter_dev,
3267 flow->esw_attr->in_rep, in_mdev);
3268 if (IS_ERR(peer_flow)) {
3269 err = PTR_ERR(peer_flow);
3270 goto out;
3271 }
3272
3273 flow->peer_flow = peer_flow;
3274 flow->flags |= MLX5E_TC_FLOW_DUP;
3275 mutex_lock(&esw->offloads.peer_mutex);
3276 list_add_tail(&flow->peer, &esw->offloads.peer_flows);
3277 mutex_unlock(&esw->offloads.peer_mutex);
3278
3279out:
3280 mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
3281 return err;
3282}
3283
3284static int
3285mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
3286 struct flow_cls_offload *f,
3287 u16 flow_flags,
3288 struct net_device *filter_dev,
3289 struct mlx5e_tc_flow **__flow)
3290{
3291 struct mlx5e_rep_priv *rpriv = priv->ppriv;
3292 struct mlx5_eswitch_rep *in_rep = rpriv->rep;
3293 struct mlx5_core_dev *in_mdev = priv->mdev;
3294 struct mlx5e_tc_flow *flow;
3295 int err;
3296
3297 flow = __mlx5e_add_fdb_flow(priv, f, flow_flags, filter_dev, in_rep,
3298 in_mdev);
3299 if (IS_ERR(flow))
3300 return PTR_ERR(flow);
3301
3302 if (is_peer_flow_needed(flow)) {
3303 err = mlx5e_tc_add_fdb_peer_flow(f, flow, flow_flags);
3304 if (err) {
3305 mlx5e_tc_del_fdb_flow(priv, flow);
3306 goto out;
3307 }
3308 }
3309
3310 *__flow = flow;
3311
3312 return 0;
3313
3314out:
3315 return err;
3316}
3317
3318static int
3319mlx5e_add_nic_flow(struct mlx5e_priv *priv,
3320 struct flow_cls_offload *f,
3321 u16 flow_flags,
3322 struct net_device *filter_dev,
3323 struct mlx5e_tc_flow **__flow)
3324{
3325 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
3326 struct netlink_ext_ack *extack = f->common.extack;
3327 struct mlx5e_tc_flow_parse_attr *parse_attr;
3328 struct mlx5e_tc_flow *flow;
3329 int attr_size, err;
3330
3331
3332 if (!tc_cls_can_offload_and_chain0(priv->netdev, &f->common))
3333 return -EOPNOTSUPP;
3334
3335 flow_flags |= MLX5E_TC_FLOW_NIC;
3336 attr_size = sizeof(struct mlx5_nic_flow_attr);
3337 err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
3338 &parse_attr, &flow);
3339 if (err)
3340 goto out;
3341
3342 parse_attr->filter_dev = filter_dev;
3343 err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
3344 f, filter_dev);
3345 if (err)
3346 goto err_free;
3347
3348 err = parse_tc_nic_actions(priv, &rule->action, parse_attr, flow, extack);
3349 if (err)
3350 goto err_free;
3351
3352 err = mlx5e_tc_add_nic_flow(priv, parse_attr, flow, extack);
3353 if (err)
3354 goto err_free;
3355
3356 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
3357 kvfree(parse_attr);
3358 *__flow = flow;
3359
3360 return 0;
3361
3362err_free:
3363 kfree(flow);
3364 kvfree(parse_attr);
3365out:
3366 return err;
3367}
3368
3369static int
3370mlx5e_tc_add_flow(struct mlx5e_priv *priv,
3371 struct flow_cls_offload *f,
3372 int flags,
3373 struct net_device *filter_dev,
3374 struct mlx5e_tc_flow **flow)
3375{
3376 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3377 u16 flow_flags;
3378 int err;
3379
3380 get_flags(flags, &flow_flags);
3381
3382 if (!tc_can_offload_extack(priv->netdev, f->common.extack))
3383 return -EOPNOTSUPP;
3384
3385 if (esw && esw->mode == MLX5_ESWITCH_OFFLOADS)
3386 err = mlx5e_add_fdb_flow(priv, f, flow_flags,
3387 filter_dev, flow);
3388 else
3389 err = mlx5e_add_nic_flow(priv, f, flow_flags,
3390 filter_dev, flow);
3391
3392 return err;
3393}
3394
3395int mlx5e_configure_flower(struct net_device *dev, struct mlx5e_priv *priv,
3396 struct flow_cls_offload *f, int flags)
3397{
3398 struct netlink_ext_ack *extack = f->common.extack;
3399 struct rhashtable *tc_ht = get_tc_ht(priv, flags);
3400 struct mlx5e_tc_flow *flow;
3401 int err = 0;
3402
3403 flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params);
3404 if (flow) {
3405 NL_SET_ERR_MSG_MOD(extack,
3406 "flow cookie already exists, ignoring");
3407 netdev_warn_once(priv->netdev,
3408 "flow cookie %lx already exists, ignoring\n",
3409 f->cookie);
3410 err = -EEXIST;
3411 goto out;
3412 }
3413
3414 err = mlx5e_tc_add_flow(priv, f, flags, dev, &flow);
3415 if (err)
3416 goto out;
3417
3418 err = rhashtable_insert_fast(tc_ht, &flow->node, tc_ht_params);
3419 if (err)
3420 goto err_free;
3421
3422 return 0;
3423
3424err_free:
3425 mlx5e_tc_del_flow(priv, flow);
3426 kfree(flow);
3427out:
3428 return err;
3429}
3430
3431#define DIRECTION_MASK (MLX5E_TC_INGRESS | MLX5E_TC_EGRESS)
3432#define FLOW_DIRECTION_MASK (MLX5E_TC_FLOW_INGRESS | MLX5E_TC_FLOW_EGRESS)
3433
3434static bool same_flow_direction(struct mlx5e_tc_flow *flow, int flags)
3435{
3436 if ((flow->flags & FLOW_DIRECTION_MASK) == (flags & DIRECTION_MASK))
3437 return true;
3438
3439 return false;
3440}
3441
3442int mlx5e_delete_flower(struct net_device *dev, struct mlx5e_priv *priv,
3443 struct flow_cls_offload *f, int flags)
3444{
3445 struct rhashtable *tc_ht = get_tc_ht(priv, flags);
3446 struct mlx5e_tc_flow *flow;
3447
3448 flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params);
3449 if (!flow || !same_flow_direction(flow, flags))
3450 return -EINVAL;
3451
3452 rhashtable_remove_fast(tc_ht, &flow->node, tc_ht_params);
3453
3454 mlx5e_tc_del_flow(priv, flow);
3455
3456 kfree(flow);
3457
3458 return 0;
3459}
3460
3461int mlx5e_stats_flower(struct net_device *dev, struct mlx5e_priv *priv,
3462 struct flow_cls_offload *f, int flags)
3463{
3464 struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
3465 struct rhashtable *tc_ht = get_tc_ht(priv, flags);
3466 struct mlx5_eswitch *peer_esw;
3467 struct mlx5e_tc_flow *flow;
3468 struct mlx5_fc *counter;
3469 u64 lastuse = 0;
3470 u64 packets = 0;
3471 u64 bytes = 0;
3472
3473 flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params);
3474 if (!flow || !same_flow_direction(flow, flags))
3475 return -EINVAL;
3476
3477 if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
3478 counter = mlx5e_tc_get_counter(flow);
3479 if (!counter)
3480 return 0;
3481
3482 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
3483 }
3484
3485
3486
3487
3488 peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
3489 if (!peer_esw)
3490 goto out;
3491
3492 if ((flow->flags & MLX5E_TC_FLOW_DUP) &&
3493 (flow->peer_flow->flags & MLX5E_TC_FLOW_OFFLOADED)) {
3494 u64 bytes2;
3495 u64 packets2;
3496 u64 lastuse2;
3497
3498 counter = mlx5e_tc_get_counter(flow->peer_flow);
3499 if (!counter)
3500 goto no_peer_counter;
3501 mlx5_fc_query_cached(counter, &bytes2, &packets2, &lastuse2);
3502
3503 bytes += bytes2;
3504 packets += packets2;
3505 lastuse = max_t(u64, lastuse, lastuse2);
3506 }
3507
3508no_peer_counter:
3509 mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
3510out:
3511 flow_stats_update(&f->stats, bytes, packets, lastuse);
3512
3513 return 0;
3514}
3515
3516static void mlx5e_tc_hairpin_update_dead_peer(struct mlx5e_priv *priv,
3517 struct mlx5e_priv *peer_priv)
3518{
3519 struct mlx5_core_dev *peer_mdev = peer_priv->mdev;
3520 struct mlx5e_hairpin_entry *hpe;
3521 u16 peer_vhca_id;
3522 int bkt;
3523
3524 if (!same_hw_devs(priv, peer_priv))
3525 return;
3526
3527 peer_vhca_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
3528
3529 hash_for_each(priv->fs.tc.hairpin_tbl, bkt, hpe, hairpin_hlist) {
3530 if (hpe->peer_vhca_id == peer_vhca_id)
3531 hpe->hp->pair->peer_gone = true;
3532 }
3533}
3534
3535static int mlx5e_tc_netdev_event(struct notifier_block *this,
3536 unsigned long event, void *ptr)
3537{
3538 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
3539 struct mlx5e_flow_steering *fs;
3540 struct mlx5e_priv *peer_priv;
3541 struct mlx5e_tc_table *tc;
3542 struct mlx5e_priv *priv;
3543
3544 if (ndev->netdev_ops != &mlx5e_netdev_ops ||
3545 event != NETDEV_UNREGISTER ||
3546 ndev->reg_state == NETREG_REGISTERED)
3547 return NOTIFY_DONE;
3548
3549 tc = container_of(this, struct mlx5e_tc_table, netdevice_nb);
3550 fs = container_of(tc, struct mlx5e_flow_steering, tc);
3551 priv = container_of(fs, struct mlx5e_priv, fs);
3552 peer_priv = netdev_priv(ndev);
3553 if (priv == peer_priv ||
3554 !(priv->netdev->features & NETIF_F_HW_TC))
3555 return NOTIFY_DONE;
3556
3557 mlx5e_tc_hairpin_update_dead_peer(priv, peer_priv);
3558
3559 return NOTIFY_DONE;
3560}
3561
3562int mlx5e_tc_nic_init(struct mlx5e_priv *priv)
3563{
3564 struct mlx5e_tc_table *tc = &priv->fs.tc;
3565 int err;
3566
3567 hash_init(tc->mod_hdr_tbl);
3568 hash_init(tc->hairpin_tbl);
3569
3570 err = rhashtable_init(&tc->ht, &tc_ht_params);
3571 if (err)
3572 return err;
3573
3574 tc->netdevice_nb.notifier_call = mlx5e_tc_netdev_event;
3575 if (register_netdevice_notifier(&tc->netdevice_nb)) {
3576 tc->netdevice_nb.notifier_call = NULL;
3577 mlx5_core_warn(priv->mdev, "Failed to register netdev notifier\n");
3578 }
3579
3580 return err;
3581}
3582
3583static void _mlx5e_tc_del_flow(void *ptr, void *arg)
3584{
3585 struct mlx5e_tc_flow *flow = ptr;
3586 struct mlx5e_priv *priv = flow->priv;
3587
3588 mlx5e_tc_del_flow(priv, flow);
3589 kfree(flow);
3590}
3591
3592void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv)
3593{
3594 struct mlx5e_tc_table *tc = &priv->fs.tc;
3595
3596 if (tc->netdevice_nb.notifier_call)
3597 unregister_netdevice_notifier(&tc->netdevice_nb);
3598
3599 rhashtable_destroy(&tc->ht);
3600
3601 if (!IS_ERR_OR_NULL(tc->t)) {
3602 mlx5_destroy_flow_table(tc->t);
3603 tc->t = NULL;
3604 }
3605}
3606
3607int mlx5e_tc_esw_init(struct rhashtable *tc_ht)
3608{
3609 return rhashtable_init(tc_ht, &tc_ht_params);
3610}
3611
3612void mlx5e_tc_esw_cleanup(struct rhashtable *tc_ht)
3613{
3614 rhashtable_free_and_destroy(tc_ht, _mlx5e_tc_del_flow, NULL);
3615}
3616
3617int mlx5e_tc_num_filters(struct mlx5e_priv *priv, int flags)
3618{
3619 struct rhashtable *tc_ht = get_tc_ht(priv, flags);
3620
3621 return atomic_read(&tc_ht->nelems);
3622}
3623
3624void mlx5e_tc_clean_fdb_peer_flows(struct mlx5_eswitch *esw)
3625{
3626 struct mlx5e_tc_flow *flow, *tmp;
3627
3628 list_for_each_entry_safe(flow, tmp, &esw->offloads.peer_flows, peer)
3629 __mlx5e_tc_del_fdb_peer_flow(flow);
3630}
3631
3632void mlx5e_tc_reoffload_flows_work(struct work_struct *work)
3633{
3634 struct mlx5_rep_uplink_priv *rpriv =
3635 container_of(work, struct mlx5_rep_uplink_priv,
3636 reoffload_flows_work);
3637 struct mlx5e_tc_flow *flow, *tmp;
3638
3639 rtnl_lock();
3640 list_for_each_entry_safe(flow, tmp, &rpriv->unready_flows, unready) {
3641 if (!mlx5e_tc_add_fdb_flow(flow->priv, flow, NULL))
3642 remove_unready_flow(flow);
3643 }
3644 rtnl_unlock();
3645}
3646