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1// SPDX-License-Identifier: GPL-2.0+
2/* Microchip VCAP API
3 *
4 * Copyright (c) 2022 Microchip Technology Inc. and its subsidiaries.
5 */
6
7#include <net/tc_act/tc_gate.h>
8#include <net/tcp.h>
9
10#include "sparx5_tc.h"
11#include "vcap_api.h"
12#include "vcap_api_client.h"
13#include "vcap_tc.h"
14#include "sparx5_main.h"
15#include "sparx5_vcap_impl.h"
16
17#define SPX5_MAX_RULE_SIZE 13 /* allows X1, X2, X4, X6 and X12 rules */
18
19/* Collect keysets and type ids for multiple rules per size */
20struct sparx5_wildcard_rule {
21 bool selected;
22 u8 value;
23 u8 mask;
24 enum vcap_keyfield_set keyset;
25};
26
27struct sparx5_multiple_rules {
28 struct sparx5_wildcard_rule rule[SPX5_MAX_RULE_SIZE];
29};
30
31struct sparx5_tc_flower_template {
32 struct list_head list; /* for insertion in the list of templates */
33 int cid; /* chain id */
34 enum vcap_keyfield_set orig; /* keyset used before the template */
35 enum vcap_keyfield_set keyset; /* new keyset used by template */
36 u16 l3_proto; /* protocol specified in the template */
37};
38
39static int
40sparx5_tc_flower_es0_tpid(struct vcap_tc_flower_parse_usage *st)
41{
42 int err = 0;
43
44 switch (st->tpid) {
45 case ETH_P_8021Q:
46 err = vcap_rule_add_key_u32(st->vrule,
47 VCAP_KF_8021Q_TPID,
48 SPX5_TPID_SEL_8100, ~0);
49 break;
50 case ETH_P_8021AD:
51 err = vcap_rule_add_key_u32(st->vrule,
52 VCAP_KF_8021Q_TPID,
53 SPX5_TPID_SEL_88A8, ~0);
54 break;
55 default:
56 NL_SET_ERR_MSG_MOD(st->fco->common.extack,
57 "Invalid vlan proto");
58 err = -EINVAL;
59 break;
60 }
61 return err;
62}
63
64static int
65sparx5_tc_flower_handler_basic_usage(struct vcap_tc_flower_parse_usage *st)
66{
67 struct flow_match_basic mt;
68 int err = 0;
69
70 flow_rule_match_basic(st->frule, &mt);
71
72 if (mt.mask->n_proto) {
73 st->l3_proto = be16_to_cpu(mt.key->n_proto);
74 if (!sparx5_vcap_is_known_etype(st->admin, st->l3_proto)) {
75 err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_ETYPE,
76 st->l3_proto, ~0);
77 if (err)
78 goto out;
79 } else if (st->l3_proto == ETH_P_IP) {
80 err = vcap_rule_add_key_bit(st->vrule, VCAP_KF_IP4_IS,
81 VCAP_BIT_1);
82 if (err)
83 goto out;
84 } else if (st->l3_proto == ETH_P_IPV6) {
85 err = vcap_rule_add_key_bit(st->vrule, VCAP_KF_IP4_IS,
86 VCAP_BIT_0);
87 if (err)
88 goto out;
89 if (st->admin->vtype == VCAP_TYPE_IS0) {
90 err = vcap_rule_add_key_bit(st->vrule,
91 VCAP_KF_IP_SNAP_IS,
92 VCAP_BIT_1);
93 if (err)
94 goto out;
95 }
96 }
97 }
98
99 if (mt.mask->ip_proto) {
100 st->l4_proto = mt.key->ip_proto;
101 if (st->l4_proto == IPPROTO_TCP) {
102 err = vcap_rule_add_key_bit(st->vrule,
103 VCAP_KF_TCP_IS,
104 VCAP_BIT_1);
105 if (err)
106 goto out;
107 } else if (st->l4_proto == IPPROTO_UDP) {
108 err = vcap_rule_add_key_bit(st->vrule,
109 VCAP_KF_TCP_IS,
110 VCAP_BIT_0);
111 if (err)
112 goto out;
113 if (st->admin->vtype == VCAP_TYPE_IS0) {
114 err = vcap_rule_add_key_bit(st->vrule,
115 VCAP_KF_TCP_UDP_IS,
116 VCAP_BIT_1);
117 if (err)
118 goto out;
119 }
120 } else {
121 err = vcap_rule_add_key_u32(st->vrule,
122 VCAP_KF_L3_IP_PROTO,
123 st->l4_proto, ~0);
124 if (err)
125 goto out;
126 }
127 }
128
129 st->used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC);
130
131 return err;
132
133out:
134 NL_SET_ERR_MSG_MOD(st->fco->common.extack, "ip_proto parse error");
135 return err;
136}
137
138static int
139sparx5_tc_flower_handler_control_usage(struct vcap_tc_flower_parse_usage *st)
140{
141 struct flow_match_control mt;
142 u32 value, mask;
143 int err = 0;
144
145 flow_rule_match_control(st->frule, &mt);
146
147 if (mt.mask->flags) {
148 if (mt.mask->flags & FLOW_DIS_FIRST_FRAG) {
149 if (mt.key->flags & FLOW_DIS_FIRST_FRAG) {
150 value = 1; /* initial fragment */
151 mask = 0x3;
152 } else {
153 if (mt.mask->flags & FLOW_DIS_IS_FRAGMENT) {
154 value = 3; /* follow up fragment */
155 mask = 0x3;
156 } else {
157 value = 0; /* no fragment */
158 mask = 0x3;
159 }
160 }
161 } else {
162 if (mt.mask->flags & FLOW_DIS_IS_FRAGMENT) {
163 value = 3; /* follow up fragment */
164 mask = 0x3;
165 } else {
166 value = 0; /* no fragment */
167 mask = 0x3;
168 }
169 }
170
171 err = vcap_rule_add_key_u32(st->vrule,
172 VCAP_KF_L3_FRAGMENT_TYPE,
173 value, mask);
174 if (err)
175 goto out;
176 }
177
178 st->used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_CONTROL);
179
180 return err;
181
182out:
183 NL_SET_ERR_MSG_MOD(st->fco->common.extack, "ip_frag parse error");
184 return err;
185}
186
187static int
188sparx5_tc_flower_handler_cvlan_usage(struct vcap_tc_flower_parse_usage *st)
189{
190 if (st->admin->vtype != VCAP_TYPE_IS0) {
191 NL_SET_ERR_MSG_MOD(st->fco->common.extack,
192 "cvlan not supported in this VCAP");
193 return -EINVAL;
194 }
195
196 return vcap_tc_flower_handler_cvlan_usage(st);
197}
198
199static int
200sparx5_tc_flower_handler_vlan_usage(struct vcap_tc_flower_parse_usage *st)
201{
202 enum vcap_key_field vid_key = VCAP_KF_8021Q_VID_CLS;
203 enum vcap_key_field pcp_key = VCAP_KF_8021Q_PCP_CLS;
204 int err;
205
206 if (st->admin->vtype == VCAP_TYPE_IS0) {
207 vid_key = VCAP_KF_8021Q_VID0;
208 pcp_key = VCAP_KF_8021Q_PCP0;
209 }
210
211 err = vcap_tc_flower_handler_vlan_usage(st, vid_key, pcp_key);
212 if (err)
213 return err;
214
215 if (st->admin->vtype == VCAP_TYPE_ES0 && st->tpid)
216 err = sparx5_tc_flower_es0_tpid(st);
217
218 return err;
219}
220
221static int (*sparx5_tc_flower_usage_handlers[])(struct vcap_tc_flower_parse_usage *st) = {
222 [FLOW_DISSECTOR_KEY_ETH_ADDRS] = vcap_tc_flower_handler_ethaddr_usage,
223 [FLOW_DISSECTOR_KEY_IPV4_ADDRS] = vcap_tc_flower_handler_ipv4_usage,
224 [FLOW_DISSECTOR_KEY_IPV6_ADDRS] = vcap_tc_flower_handler_ipv6_usage,
225 [FLOW_DISSECTOR_KEY_CONTROL] = sparx5_tc_flower_handler_control_usage,
226 [FLOW_DISSECTOR_KEY_PORTS] = vcap_tc_flower_handler_portnum_usage,
227 [FLOW_DISSECTOR_KEY_BASIC] = sparx5_tc_flower_handler_basic_usage,
228 [FLOW_DISSECTOR_KEY_CVLAN] = sparx5_tc_flower_handler_cvlan_usage,
229 [FLOW_DISSECTOR_KEY_VLAN] = sparx5_tc_flower_handler_vlan_usage,
230 [FLOW_DISSECTOR_KEY_TCP] = vcap_tc_flower_handler_tcp_usage,
231 [FLOW_DISSECTOR_KEY_ARP] = vcap_tc_flower_handler_arp_usage,
232 [FLOW_DISSECTOR_KEY_IP] = vcap_tc_flower_handler_ip_usage,
233};
234
235static int sparx5_tc_use_dissectors(struct vcap_tc_flower_parse_usage *st,
236 struct vcap_admin *admin,
237 struct vcap_rule *vrule)
238{
239 int idx, err = 0;
240
241 for (idx = 0; idx < ARRAY_SIZE(sparx5_tc_flower_usage_handlers); ++idx) {
242 if (!flow_rule_match_key(st->frule, idx))
243 continue;
244 if (!sparx5_tc_flower_usage_handlers[idx])
245 continue;
246 err = sparx5_tc_flower_usage_handlers[idx](st);
247 if (err)
248 return err;
249 }
250
251 if (st->frule->match.dissector->used_keys ^ st->used_keys) {
252 NL_SET_ERR_MSG_MOD(st->fco->common.extack,
253 "Unsupported match item");
254 return -ENOENT;
255 }
256
257 return err;
258}
259
260static int sparx5_tc_flower_action_check(struct vcap_control *vctrl,
261 struct net_device *ndev,
262 struct flow_cls_offload *fco,
263 bool ingress)
264{
265 struct flow_rule *rule = flow_cls_offload_flow_rule(fco);
266 struct flow_action_entry *actent, *last_actent = NULL;
267 struct flow_action *act = &rule->action;
268 u64 action_mask = 0;
269 int idx;
270
271 if (!flow_action_has_entries(act)) {
272 NL_SET_ERR_MSG_MOD(fco->common.extack, "No actions");
273 return -EINVAL;
274 }
275
276 if (!flow_action_basic_hw_stats_check(act, fco->common.extack))
277 return -EOPNOTSUPP;
278
279 flow_action_for_each(idx, actent, act) {
280 if (action_mask & BIT(actent->id)) {
281 NL_SET_ERR_MSG_MOD(fco->common.extack,
282 "More actions of the same type");
283 return -EINVAL;
284 }
285 action_mask |= BIT(actent->id);
286 last_actent = actent; /* Save last action for later check */
287 }
288
289 /* Check if last action is a goto
290 * The last chain/lookup does not need to have a goto action
291 */
292 if (last_actent->id == FLOW_ACTION_GOTO) {
293 /* Check if the destination chain is in one of the VCAPs */
294 if (!vcap_is_next_lookup(vctrl, fco->common.chain_index,
295 last_actent->chain_index)) {
296 NL_SET_ERR_MSG_MOD(fco->common.extack,
297 "Invalid goto chain");
298 return -EINVAL;
299 }
300 } else if (!vcap_is_last_chain(vctrl, fco->common.chain_index,
301 ingress)) {
302 NL_SET_ERR_MSG_MOD(fco->common.extack,
303 "Last action must be 'goto'");
304 return -EINVAL;
305 }
306
307 /* Catch unsupported combinations of actions */
308 if (action_mask & BIT(FLOW_ACTION_TRAP) &&
309 action_mask & BIT(FLOW_ACTION_ACCEPT)) {
310 NL_SET_ERR_MSG_MOD(fco->common.extack,
311 "Cannot combine pass and trap action");
312 return -EOPNOTSUPP;
313 }
314
315 if (action_mask & BIT(FLOW_ACTION_VLAN_PUSH) &&
316 action_mask & BIT(FLOW_ACTION_VLAN_POP)) {
317 NL_SET_ERR_MSG_MOD(fco->common.extack,
318 "Cannot combine vlan push and pop action");
319 return -EOPNOTSUPP;
320 }
321
322 if (action_mask & BIT(FLOW_ACTION_VLAN_PUSH) &&
323 action_mask & BIT(FLOW_ACTION_VLAN_MANGLE)) {
324 NL_SET_ERR_MSG_MOD(fco->common.extack,
325 "Cannot combine vlan push and modify action");
326 return -EOPNOTSUPP;
327 }
328
329 if (action_mask & BIT(FLOW_ACTION_VLAN_POP) &&
330 action_mask & BIT(FLOW_ACTION_VLAN_MANGLE)) {
331 NL_SET_ERR_MSG_MOD(fco->common.extack,
332 "Cannot combine vlan pop and modify action");
333 return -EOPNOTSUPP;
334 }
335
336 return 0;
337}
338
339/* Add a rule counter action */
340static int sparx5_tc_add_rule_counter(struct vcap_admin *admin,
341 struct vcap_rule *vrule)
342{
343 int err;
344
345 switch (admin->vtype) {
346 case VCAP_TYPE_IS0:
347 break;
348 case VCAP_TYPE_ES0:
349 err = vcap_rule_mod_action_u32(vrule, VCAP_AF_ESDX,
350 vrule->id);
351 if (err)
352 return err;
353 vcap_rule_set_counter_id(vrule, vrule->id);
354 break;
355 case VCAP_TYPE_IS2:
356 case VCAP_TYPE_ES2:
357 err = vcap_rule_mod_action_u32(vrule, VCAP_AF_CNT_ID,
358 vrule->id);
359 if (err)
360 return err;
361 vcap_rule_set_counter_id(vrule, vrule->id);
362 break;
363 default:
364 pr_err("%s:%d: vcap type: %d not supported\n",
365 __func__, __LINE__, admin->vtype);
366 break;
367 }
368 return 0;
369}
370
371/* Collect all port keysets and apply the first of them, possibly wildcarded */
372static int sparx5_tc_select_protocol_keyset(struct net_device *ndev,
373 struct vcap_rule *vrule,
374 struct vcap_admin *admin,
375 u16 l3_proto,
376 struct sparx5_multiple_rules *multi)
377{
378 struct sparx5_port *port = netdev_priv(ndev);
379 struct vcap_keyset_list portkeysetlist = {};
380 enum vcap_keyfield_set portkeysets[10] = {};
381 struct vcap_keyset_list matches = {};
382 enum vcap_keyfield_set keysets[10];
383 int idx, jdx, err = 0, count = 0;
384 struct sparx5_wildcard_rule *mru;
385 const struct vcap_set *kinfo;
386 struct vcap_control *vctrl;
387
388 vctrl = port->sparx5->vcap_ctrl;
389
390 /* Find the keysets that the rule can use */
391 matches.keysets = keysets;
392 matches.max = ARRAY_SIZE(keysets);
393 if (!vcap_rule_find_keysets(vrule, &matches))
394 return -EINVAL;
395
396 /* Find the keysets that the port configuration supports */
397 portkeysetlist.max = ARRAY_SIZE(portkeysets);
398 portkeysetlist.keysets = portkeysets;
399 err = sparx5_vcap_get_port_keyset(ndev,
400 admin, vrule->vcap_chain_id,
401 l3_proto,
402 &portkeysetlist);
403 if (err)
404 return err;
405
406 /* Find the intersection of the two sets of keyset */
407 for (idx = 0; idx < portkeysetlist.cnt; ++idx) {
408 kinfo = vcap_keyfieldset(vctrl, admin->vtype,
409 portkeysetlist.keysets[idx]);
410 if (!kinfo)
411 continue;
412
413 /* Find a port keyset that matches the required keys
414 * If there are multiple keysets then compose a type id mask
415 */
416 for (jdx = 0; jdx < matches.cnt; ++jdx) {
417 if (portkeysetlist.keysets[idx] != matches.keysets[jdx])
418 continue;
419
420 mru = &multi->rule[kinfo->sw_per_item];
421 if (!mru->selected) {
422 mru->selected = true;
423 mru->keyset = portkeysetlist.keysets[idx];
424 mru->value = kinfo->type_id;
425 }
426 mru->value &= kinfo->type_id;
427 mru->mask |= kinfo->type_id;
428 ++count;
429 }
430 }
431 if (count == 0)
432 return -EPROTO;
433
434 if (l3_proto == ETH_P_ALL && count < portkeysetlist.cnt)
435 return -ENOENT;
436
437 for (idx = 0; idx < SPX5_MAX_RULE_SIZE; ++idx) {
438 mru = &multi->rule[idx];
439 if (!mru->selected)
440 continue;
441
442 /* Align the mask to the combined value */
443 mru->mask ^= mru->value;
444 }
445
446 /* Set the chosen keyset on the rule and set a wildcarded type if there
447 * are more than one keyset
448 */
449 for (idx = 0; idx < SPX5_MAX_RULE_SIZE; ++idx) {
450 mru = &multi->rule[idx];
451 if (!mru->selected)
452 continue;
453
454 vcap_set_rule_set_keyset(vrule, mru->keyset);
455 if (count > 1)
456 /* Some keysets do not have a type field */
457 vcap_rule_mod_key_u32(vrule, VCAP_KF_TYPE,
458 mru->value,
459 ~mru->mask);
460 mru->selected = false; /* mark as done */
461 break; /* Stop here and add more rules later */
462 }
463 return err;
464}
465
466static int sparx5_tc_add_rule_copy(struct vcap_control *vctrl,
467 struct flow_cls_offload *fco,
468 struct vcap_rule *erule,
469 struct vcap_admin *admin,
470 struct sparx5_wildcard_rule *rule)
471{
472 enum vcap_key_field keylist[] = {
473 VCAP_KF_IF_IGR_PORT_MASK,
474 VCAP_KF_IF_IGR_PORT_MASK_SEL,
475 VCAP_KF_IF_IGR_PORT_MASK_RNG,
476 VCAP_KF_LOOKUP_FIRST_IS,
477 VCAP_KF_TYPE,
478 };
479 struct vcap_rule *vrule;
480 int err;
481
482 /* Add an extra rule with a special user and the new keyset */
483 erule->user = VCAP_USER_TC_EXTRA;
484 vrule = vcap_copy_rule(erule);
485 if (IS_ERR(vrule))
486 return PTR_ERR(vrule);
487
488 /* Link the new rule to the existing rule with the cookie */
489 vrule->cookie = erule->cookie;
490 vcap_filter_rule_keys(vrule, keylist, ARRAY_SIZE(keylist), true);
491 err = vcap_set_rule_set_keyset(vrule, rule->keyset);
492 if (err) {
493 pr_err("%s:%d: could not set keyset %s in rule: %u\n",
494 __func__, __LINE__,
495 vcap_keyset_name(vctrl, rule->keyset),
496 vrule->id);
497 goto out;
498 }
499
500 /* Some keysets do not have a type field, so ignore return value */
501 vcap_rule_mod_key_u32(vrule, VCAP_KF_TYPE, rule->value, ~rule->mask);
502
503 err = vcap_set_rule_set_actionset(vrule, erule->actionset);
504 if (err)
505 goto out;
506
507 err = sparx5_tc_add_rule_counter(admin, vrule);
508 if (err)
509 goto out;
510
511 err = vcap_val_rule(vrule, ETH_P_ALL);
512 if (err) {
513 pr_err("%s:%d: could not validate rule: %u\n",
514 __func__, __LINE__, vrule->id);
515 vcap_set_tc_exterr(fco, vrule);
516 goto out;
517 }
518 err = vcap_add_rule(vrule);
519 if (err) {
520 pr_err("%s:%d: could not add rule: %u\n",
521 __func__, __LINE__, vrule->id);
522 goto out;
523 }
524out:
525 vcap_free_rule(vrule);
526 return err;
527}
528
529static int sparx5_tc_add_remaining_rules(struct vcap_control *vctrl,
530 struct flow_cls_offload *fco,
531 struct vcap_rule *erule,
532 struct vcap_admin *admin,
533 struct sparx5_multiple_rules *multi)
534{
535 int idx, err = 0;
536
537 for (idx = 0; idx < SPX5_MAX_RULE_SIZE; ++idx) {
538 if (!multi->rule[idx].selected)
539 continue;
540
541 err = sparx5_tc_add_rule_copy(vctrl, fco, erule, admin,
542 &multi->rule[idx]);
543 if (err)
544 break;
545 }
546 return err;
547}
548
549/* Add the actionset that is the default for the VCAP type */
550static int sparx5_tc_set_actionset(struct vcap_admin *admin,
551 struct vcap_rule *vrule)
552{
553 enum vcap_actionfield_set aset;
554 int err = 0;
555
556 switch (admin->vtype) {
557 case VCAP_TYPE_IS0:
558 aset = VCAP_AFS_CLASSIFICATION;
559 break;
560 case VCAP_TYPE_IS2:
561 aset = VCAP_AFS_BASE_TYPE;
562 break;
563 case VCAP_TYPE_ES0:
564 aset = VCAP_AFS_ES0;
565 break;
566 case VCAP_TYPE_ES2:
567 aset = VCAP_AFS_BASE_TYPE;
568 break;
569 default:
570 pr_err("%s:%d: %s\n", __func__, __LINE__, "Invalid VCAP type");
571 return -EINVAL;
572 }
573 /* Do not overwrite any current actionset */
574 if (vrule->actionset == VCAP_AFS_NO_VALUE)
575 err = vcap_set_rule_set_actionset(vrule, aset);
576 return err;
577}
578
579/* Add the VCAP key to match on for a rule target value */
580static int sparx5_tc_add_rule_link_target(struct vcap_admin *admin,
581 struct vcap_rule *vrule,
582 int target_cid)
583{
584 int link_val = target_cid % VCAP_CID_LOOKUP_SIZE;
585 int err;
586
587 if (!link_val)
588 return 0;
589
590 switch (admin->vtype) {
591 case VCAP_TYPE_IS0:
592 /* Add NXT_IDX key for chaining rules between IS0 instances */
593 err = vcap_rule_add_key_u32(vrule, VCAP_KF_LOOKUP_GEN_IDX_SEL,
594 1, /* enable */
595 ~0);
596 if (err)
597 return err;
598 return vcap_rule_add_key_u32(vrule, VCAP_KF_LOOKUP_GEN_IDX,
599 link_val, /* target */
600 ~0);
601 case VCAP_TYPE_IS2:
602 /* Add PAG key for chaining rules from IS0 */
603 return vcap_rule_add_key_u32(vrule, VCAP_KF_LOOKUP_PAG,
604 link_val, /* target */
605 ~0);
606 case VCAP_TYPE_ES0:
607 case VCAP_TYPE_ES2:
608 /* Add ISDX key for chaining rules from IS0 */
609 return vcap_rule_add_key_u32(vrule, VCAP_KF_ISDX_CLS, link_val,
610 ~0);
611 default:
612 break;
613 }
614 return 0;
615}
616
617/* Add the VCAP action that adds a target value to a rule */
618static int sparx5_tc_add_rule_link(struct vcap_control *vctrl,
619 struct vcap_admin *admin,
620 struct vcap_rule *vrule,
621 int from_cid, int to_cid)
622{
623 struct vcap_admin *to_admin = vcap_find_admin(vctrl, to_cid);
624 int diff, err = 0;
625
626 if (!to_admin) {
627 pr_err("%s:%d: unsupported chain direction: %d\n",
628 __func__, __LINE__, to_cid);
629 return -EINVAL;
630 }
631
632 diff = vcap_chain_offset(vctrl, from_cid, to_cid);
633 if (!diff)
634 return 0;
635
636 if (admin->vtype == VCAP_TYPE_IS0 &&
637 to_admin->vtype == VCAP_TYPE_IS0) {
638 /* Between IS0 instances the G_IDX value is used */
639 err = vcap_rule_add_action_u32(vrule, VCAP_AF_NXT_IDX, diff);
640 if (err)
641 goto out;
642 err = vcap_rule_add_action_u32(vrule, VCAP_AF_NXT_IDX_CTRL,
643 1); /* Replace */
644 if (err)
645 goto out;
646 } else if (admin->vtype == VCAP_TYPE_IS0 &&
647 to_admin->vtype == VCAP_TYPE_IS2) {
648 /* Between IS0 and IS2 the PAG value is used */
649 err = vcap_rule_add_action_u32(vrule, VCAP_AF_PAG_VAL, diff);
650 if (err)
651 goto out;
652 err = vcap_rule_add_action_u32(vrule,
653 VCAP_AF_PAG_OVERRIDE_MASK,
654 0xff);
655 if (err)
656 goto out;
657 } else if (admin->vtype == VCAP_TYPE_IS0 &&
658 (to_admin->vtype == VCAP_TYPE_ES0 ||
659 to_admin->vtype == VCAP_TYPE_ES2)) {
660 /* Between IS0 and ES0/ES2 the ISDX value is used */
661 err = vcap_rule_add_action_u32(vrule, VCAP_AF_ISDX_VAL,
662 diff);
663 if (err)
664 goto out;
665 err = vcap_rule_add_action_bit(vrule,
666 VCAP_AF_ISDX_ADD_REPLACE_SEL,
667 VCAP_BIT_1);
668 if (err)
669 goto out;
670 } else {
671 pr_err("%s:%d: unsupported chain destination: %d\n",
672 __func__, __LINE__, to_cid);
673 err = -EOPNOTSUPP;
674 }
675out:
676 return err;
677}
678
679static int sparx5_tc_flower_parse_act_gate(struct sparx5_psfp_sg *sg,
680 struct flow_action_entry *act,
681 struct netlink_ext_ack *extack)
682{
683 int i;
684
685 if (act->gate.prio < -1 || act->gate.prio > SPX5_PSFP_SG_MAX_IPV) {
686 NL_SET_ERR_MSG_MOD(extack, "Invalid gate priority");
687 return -EINVAL;
688 }
689
690 if (act->gate.cycletime < SPX5_PSFP_SG_MIN_CYCLE_TIME_NS ||
691 act->gate.cycletime > SPX5_PSFP_SG_MAX_CYCLE_TIME_NS) {
692 NL_SET_ERR_MSG_MOD(extack, "Invalid gate cycletime");
693 return -EINVAL;
694 }
695
696 if (act->gate.cycletimeext > SPX5_PSFP_SG_MAX_CYCLE_TIME_NS) {
697 NL_SET_ERR_MSG_MOD(extack, "Invalid gate cycletimeext");
698 return -EINVAL;
699 }
700
701 if (act->gate.num_entries >= SPX5_PSFP_GCE_CNT) {
702 NL_SET_ERR_MSG_MOD(extack, "Invalid number of gate entries");
703 return -EINVAL;
704 }
705
706 sg->gate_state = true;
707 sg->ipv = act->gate.prio;
708 sg->num_entries = act->gate.num_entries;
709 sg->cycletime = act->gate.cycletime;
710 sg->cycletimeext = act->gate.cycletimeext;
711
712 for (i = 0; i < sg->num_entries; i++) {
713 sg->gce[i].gate_state = !!act->gate.entries[i].gate_state;
714 sg->gce[i].interval = act->gate.entries[i].interval;
715 sg->gce[i].ipv = act->gate.entries[i].ipv;
716 sg->gce[i].maxoctets = act->gate.entries[i].maxoctets;
717 }
718
719 return 0;
720}
721
722static int sparx5_tc_flower_parse_act_police(struct sparx5_policer *pol,
723 struct flow_action_entry *act,
724 struct netlink_ext_ack *extack)
725{
726 pol->type = SPX5_POL_SERVICE;
727 pol->rate = div_u64(act->police.rate_bytes_ps, 1000) * 8;
728 pol->burst = act->police.burst;
729 pol->idx = act->hw_index;
730
731 /* rate is now in kbit */
732 if (pol->rate > DIV_ROUND_UP(SPX5_SDLB_GROUP_RATE_MAX, 1000)) {
733 NL_SET_ERR_MSG_MOD(extack, "Maximum rate exceeded");
734 return -EINVAL;
735 }
736
737 if (act->police.exceed.act_id != FLOW_ACTION_DROP) {
738 NL_SET_ERR_MSG_MOD(extack, "Offload not supported when exceed action is not drop");
739 return -EOPNOTSUPP;
740 }
741
742 if (act->police.notexceed.act_id != FLOW_ACTION_PIPE &&
743 act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) {
744 NL_SET_ERR_MSG_MOD(extack, "Offload not supported when conform action is not pipe or ok");
745 return -EOPNOTSUPP;
746 }
747
748 return 0;
749}
750
751static int sparx5_tc_flower_psfp_setup(struct sparx5 *sparx5,
752 struct vcap_rule *vrule, int sg_idx,
753 int pol_idx, struct sparx5_psfp_sg *sg,
754 struct sparx5_psfp_fm *fm,
755 struct sparx5_psfp_sf *sf)
756{
757 u32 psfp_sfid = 0, psfp_fmid = 0, psfp_sgid = 0;
758 int ret;
759
760 /* Must always have a stream gate - max sdu (filter option) is evaluated
761 * after frames have passed the gate, so in case of only a policer, we
762 * allocate a stream gate that is always open.
763 */
764 if (sg_idx < 0) {
765 sg_idx = sparx5_pool_idx_to_id(SPX5_PSFP_SG_OPEN);
766 sg->ipv = 0; /* Disabled */
767 sg->cycletime = SPX5_PSFP_SG_CYCLE_TIME_DEFAULT;
768 sg->num_entries = 1;
769 sg->gate_state = 1; /* Open */
770 sg->gate_enabled = 1;
771 sg->gce[0].gate_state = 1;
772 sg->gce[0].interval = SPX5_PSFP_SG_CYCLE_TIME_DEFAULT;
773 sg->gce[0].ipv = 0;
774 sg->gce[0].maxoctets = 0; /* Disabled */
775 }
776
777 ret = sparx5_psfp_sg_add(sparx5, sg_idx, sg, &psfp_sgid);
778 if (ret < 0)
779 return ret;
780
781 if (pol_idx >= 0) {
782 /* Add new flow-meter */
783 ret = sparx5_psfp_fm_add(sparx5, pol_idx, fm, &psfp_fmid);
784 if (ret < 0)
785 return ret;
786 }
787
788 /* Map stream filter to stream gate */
789 sf->sgid = psfp_sgid;
790
791 /* Add new stream-filter and map it to a steam gate */
792 ret = sparx5_psfp_sf_add(sparx5, sf, &psfp_sfid);
793 if (ret < 0)
794 return ret;
795
796 /* Streams are classified by ISDX - map ISDX 1:1 to sfid for now. */
797 sparx5_isdx_conf_set(sparx5, psfp_sfid, psfp_sfid, psfp_fmid);
798
799 ret = vcap_rule_add_action_bit(vrule, VCAP_AF_ISDX_ADD_REPLACE_SEL,
800 VCAP_BIT_1);
801 if (ret)
802 return ret;
803
804 ret = vcap_rule_add_action_u32(vrule, VCAP_AF_ISDX_VAL, psfp_sfid);
805 if (ret)
806 return ret;
807
808 return 0;
809}
810
811/* Handle the action trap for a VCAP rule */
812static int sparx5_tc_action_trap(struct vcap_admin *admin,
813 struct vcap_rule *vrule,
814 struct flow_cls_offload *fco)
815{
816 int err = 0;
817
818 switch (admin->vtype) {
819 case VCAP_TYPE_IS2:
820 err = vcap_rule_add_action_bit(vrule,
821 VCAP_AF_CPU_COPY_ENA,
822 VCAP_BIT_1);
823 if (err)
824 break;
825 err = vcap_rule_add_action_u32(vrule,
826 VCAP_AF_CPU_QUEUE_NUM, 0);
827 if (err)
828 break;
829 err = vcap_rule_add_action_u32(vrule,
830 VCAP_AF_MASK_MODE,
831 SPX5_PMM_REPLACE_ALL);
832 break;
833 case VCAP_TYPE_ES0:
834 err = vcap_rule_add_action_u32(vrule,
835 VCAP_AF_FWD_SEL,
836 SPX5_FWSEL_REDIRECT_TO_LOOPBACK);
837 break;
838 case VCAP_TYPE_ES2:
839 err = vcap_rule_add_action_bit(vrule,
840 VCAP_AF_CPU_COPY_ENA,
841 VCAP_BIT_1);
842 if (err)
843 break;
844 err = vcap_rule_add_action_u32(vrule,
845 VCAP_AF_CPU_QUEUE_NUM, 0);
846 break;
847 default:
848 NL_SET_ERR_MSG_MOD(fco->common.extack,
849 "Trap action not supported in this VCAP");
850 err = -EOPNOTSUPP;
851 break;
852 }
853 return err;
854}
855
856static int sparx5_tc_action_vlan_pop(struct vcap_admin *admin,
857 struct vcap_rule *vrule,
858 struct flow_cls_offload *fco,
859 u16 tpid)
860{
861 int err = 0;
862
863 switch (admin->vtype) {
864 case VCAP_TYPE_ES0:
865 break;
866 default:
867 NL_SET_ERR_MSG_MOD(fco->common.extack,
868 "VLAN pop action not supported in this VCAP");
869 return -EOPNOTSUPP;
870 }
871
872 switch (tpid) {
873 case ETH_P_8021Q:
874 case ETH_P_8021AD:
875 err = vcap_rule_add_action_u32(vrule,
876 VCAP_AF_PUSH_OUTER_TAG,
877 SPX5_OTAG_UNTAG);
878 break;
879 default:
880 NL_SET_ERR_MSG_MOD(fco->common.extack,
881 "Invalid vlan proto");
882 err = -EINVAL;
883 }
884 return err;
885}
886
887static int sparx5_tc_action_vlan_modify(struct vcap_admin *admin,
888 struct vcap_rule *vrule,
889 struct flow_cls_offload *fco,
890 struct flow_action_entry *act,
891 u16 tpid)
892{
893 int err = 0;
894
895 switch (admin->vtype) {
896 case VCAP_TYPE_ES0:
897 err = vcap_rule_add_action_u32(vrule,
898 VCAP_AF_PUSH_OUTER_TAG,
899 SPX5_OTAG_TAG_A);
900 if (err)
901 return err;
902 break;
903 default:
904 NL_SET_ERR_MSG_MOD(fco->common.extack,
905 "VLAN modify action not supported in this VCAP");
906 return -EOPNOTSUPP;
907 }
908
909 switch (tpid) {
910 case ETH_P_8021Q:
911 err = vcap_rule_add_action_u32(vrule,
912 VCAP_AF_TAG_A_TPID_SEL,
913 SPX5_TPID_A_8100);
914 break;
915 case ETH_P_8021AD:
916 err = vcap_rule_add_action_u32(vrule,
917 VCAP_AF_TAG_A_TPID_SEL,
918 SPX5_TPID_A_88A8);
919 break;
920 default:
921 NL_SET_ERR_MSG_MOD(fco->common.extack,
922 "Invalid vlan proto");
923 err = -EINVAL;
924 }
925 if (err)
926 return err;
927
928 err = vcap_rule_add_action_u32(vrule,
929 VCAP_AF_TAG_A_VID_SEL,
930 SPX5_VID_A_VAL);
931 if (err)
932 return err;
933
934 err = vcap_rule_add_action_u32(vrule,
935 VCAP_AF_VID_A_VAL,
936 act->vlan.vid);
937 if (err)
938 return err;
939
940 err = vcap_rule_add_action_u32(vrule,
941 VCAP_AF_TAG_A_PCP_SEL,
942 SPX5_PCP_A_VAL);
943 if (err)
944 return err;
945
946 err = vcap_rule_add_action_u32(vrule,
947 VCAP_AF_PCP_A_VAL,
948 act->vlan.prio);
949 if (err)
950 return err;
951
952 return vcap_rule_add_action_u32(vrule,
953 VCAP_AF_TAG_A_DEI_SEL,
954 SPX5_DEI_A_CLASSIFIED);
955}
956
957static int sparx5_tc_action_vlan_push(struct vcap_admin *admin,
958 struct vcap_rule *vrule,
959 struct flow_cls_offload *fco,
960 struct flow_action_entry *act,
961 u16 tpid)
962{
963 u16 act_tpid = be16_to_cpu(act->vlan.proto);
964 int err = 0;
965
966 switch (admin->vtype) {
967 case VCAP_TYPE_ES0:
968 break;
969 default:
970 NL_SET_ERR_MSG_MOD(fco->common.extack,
971 "VLAN push action not supported in this VCAP");
972 return -EOPNOTSUPP;
973 }
974
975 if (tpid == ETH_P_8021AD) {
976 NL_SET_ERR_MSG_MOD(fco->common.extack,
977 "Cannot push on double tagged frames");
978 return -EOPNOTSUPP;
979 }
980
981 err = sparx5_tc_action_vlan_modify(admin, vrule, fco, act, act_tpid);
982 if (err)
983 return err;
984
985 switch (act_tpid) {
986 case ETH_P_8021Q:
987 break;
988 case ETH_P_8021AD:
989 /* Push classified tag as inner tag */
990 err = vcap_rule_add_action_u32(vrule,
991 VCAP_AF_PUSH_INNER_TAG,
992 SPX5_ITAG_PUSH_B_TAG);
993 if (err)
994 break;
995 err = vcap_rule_add_action_u32(vrule,
996 VCAP_AF_TAG_B_TPID_SEL,
997 SPX5_TPID_B_CLASSIFIED);
998 break;
999 default:
1000 NL_SET_ERR_MSG_MOD(fco->common.extack,
1001 "Invalid vlan proto");
1002 err = -EINVAL;
1003 }
1004 return err;
1005}
1006
1007/* Remove rule keys that may prevent templates from matching a keyset */
1008static void sparx5_tc_flower_simplify_rule(struct vcap_admin *admin,
1009 struct vcap_rule *vrule,
1010 u16 l3_proto)
1011{
1012 switch (admin->vtype) {
1013 case VCAP_TYPE_IS0:
1014 vcap_rule_rem_key(vrule, VCAP_KF_ETYPE);
1015 switch (l3_proto) {
1016 case ETH_P_IP:
1017 break;
1018 case ETH_P_IPV6:
1019 vcap_rule_rem_key(vrule, VCAP_KF_IP_SNAP_IS);
1020 break;
1021 default:
1022 break;
1023 }
1024 break;
1025 case VCAP_TYPE_ES2:
1026 switch (l3_proto) {
1027 case ETH_P_IP:
1028 if (vrule->keyset == VCAP_KFS_IP4_OTHER)
1029 vcap_rule_rem_key(vrule, VCAP_KF_TCP_IS);
1030 break;
1031 case ETH_P_IPV6:
1032 if (vrule->keyset == VCAP_KFS_IP6_STD)
1033 vcap_rule_rem_key(vrule, VCAP_KF_TCP_IS);
1034 vcap_rule_rem_key(vrule, VCAP_KF_IP4_IS);
1035 break;
1036 default:
1037 break;
1038 }
1039 break;
1040 case VCAP_TYPE_IS2:
1041 switch (l3_proto) {
1042 case ETH_P_IP:
1043 case ETH_P_IPV6:
1044 vcap_rule_rem_key(vrule, VCAP_KF_IP4_IS);
1045 break;
1046 default:
1047 break;
1048 }
1049 break;
1050 default:
1051 break;
1052 }
1053}
1054
1055static bool sparx5_tc_flower_use_template(struct net_device *ndev,
1056 struct flow_cls_offload *fco,
1057 struct vcap_admin *admin,
1058 struct vcap_rule *vrule)
1059{
1060 struct sparx5_port *port = netdev_priv(ndev);
1061 struct sparx5_tc_flower_template *ftp;
1062
1063 list_for_each_entry(ftp, &port->tc_templates, list) {
1064 if (ftp->cid != fco->common.chain_index)
1065 continue;
1066
1067 vcap_set_rule_set_keyset(vrule, ftp->keyset);
1068 sparx5_tc_flower_simplify_rule(admin, vrule, ftp->l3_proto);
1069 return true;
1070 }
1071 return false;
1072}
1073
1074static int sparx5_tc_flower_replace(struct net_device *ndev,
1075 struct flow_cls_offload *fco,
1076 struct vcap_admin *admin,
1077 bool ingress)
1078{
1079 struct sparx5_psfp_sf sf = { .max_sdu = SPX5_PSFP_SF_MAX_SDU };
1080 struct netlink_ext_ack *extack = fco->common.extack;
1081 int err, idx, tc_sg_idx = -1, tc_pol_idx = -1;
1082 struct vcap_tc_flower_parse_usage state = {
1083 .fco = fco,
1084 .l3_proto = ETH_P_ALL,
1085 .admin = admin,
1086 };
1087 struct sparx5_port *port = netdev_priv(ndev);
1088 struct sparx5_multiple_rules multi = {};
1089 struct sparx5 *sparx5 = port->sparx5;
1090 struct sparx5_psfp_sg sg = { 0 };
1091 struct sparx5_psfp_fm fm = { 0 };
1092 struct flow_action_entry *act;
1093 struct vcap_control *vctrl;
1094 struct flow_rule *frule;
1095 struct vcap_rule *vrule;
1096
1097 vctrl = port->sparx5->vcap_ctrl;
1098
1099 err = sparx5_tc_flower_action_check(vctrl, ndev, fco, ingress);
1100 if (err)
1101 return err;
1102
1103 vrule = vcap_alloc_rule(vctrl, ndev, fco->common.chain_index, VCAP_USER_TC,
1104 fco->common.prio, 0);
1105 if (IS_ERR(vrule))
1106 return PTR_ERR(vrule);
1107
1108 vrule->cookie = fco->cookie;
1109
1110 state.vrule = vrule;
1111 state.frule = flow_cls_offload_flow_rule(fco);
1112 err = sparx5_tc_use_dissectors(&state, admin, vrule);
1113 if (err)
1114 goto out;
1115
1116 err = sparx5_tc_add_rule_counter(admin, vrule);
1117 if (err)
1118 goto out;
1119
1120 err = sparx5_tc_add_rule_link_target(admin, vrule,
1121 fco->common.chain_index);
1122 if (err)
1123 goto out;
1124
1125 frule = flow_cls_offload_flow_rule(fco);
1126 flow_action_for_each(idx, act, &frule->action) {
1127 switch (act->id) {
1128 case FLOW_ACTION_GATE: {
1129 err = sparx5_tc_flower_parse_act_gate(&sg, act, extack);
1130 if (err < 0)
1131 goto out;
1132
1133 tc_sg_idx = act->hw_index;
1134
1135 break;
1136 }
1137 case FLOW_ACTION_POLICE: {
1138 err = sparx5_tc_flower_parse_act_police(&fm.pol, act,
1139 extack);
1140 if (err < 0)
1141 goto out;
1142
1143 tc_pol_idx = fm.pol.idx;
1144 sf.max_sdu = act->police.mtu;
1145
1146 break;
1147 }
1148 case FLOW_ACTION_TRAP:
1149 err = sparx5_tc_action_trap(admin, vrule, fco);
1150 if (err)
1151 goto out;
1152 break;
1153 case FLOW_ACTION_ACCEPT:
1154 err = sparx5_tc_set_actionset(admin, vrule);
1155 if (err)
1156 goto out;
1157 break;
1158 case FLOW_ACTION_GOTO:
1159 err = sparx5_tc_set_actionset(admin, vrule);
1160 if (err)
1161 goto out;
1162 sparx5_tc_add_rule_link(vctrl, admin, vrule,
1163 fco->common.chain_index,
1164 act->chain_index);
1165 break;
1166 case FLOW_ACTION_VLAN_POP:
1167 err = sparx5_tc_action_vlan_pop(admin, vrule, fco,
1168 state.tpid);
1169 if (err)
1170 goto out;
1171 break;
1172 case FLOW_ACTION_VLAN_PUSH:
1173 err = sparx5_tc_action_vlan_push(admin, vrule, fco,
1174 act, state.tpid);
1175 if (err)
1176 goto out;
1177 break;
1178 case FLOW_ACTION_VLAN_MANGLE:
1179 err = sparx5_tc_action_vlan_modify(admin, vrule, fco,
1180 act, state.tpid);
1181 if (err)
1182 goto out;
1183 break;
1184 default:
1185 NL_SET_ERR_MSG_MOD(fco->common.extack,
1186 "Unsupported TC action");
1187 err = -EOPNOTSUPP;
1188 goto out;
1189 }
1190 }
1191
1192 /* Setup PSFP */
1193 if (tc_sg_idx >= 0 || tc_pol_idx >= 0) {
1194 err = sparx5_tc_flower_psfp_setup(sparx5, vrule, tc_sg_idx,
1195 tc_pol_idx, &sg, &fm, &sf);
1196 if (err)
1197 goto out;
1198 }
1199
1200 if (!sparx5_tc_flower_use_template(ndev, fco, admin, vrule)) {
1201 err = sparx5_tc_select_protocol_keyset(ndev, vrule, admin,
1202 state.l3_proto, &multi);
1203 if (err) {
1204 NL_SET_ERR_MSG_MOD(fco->common.extack,
1205 "No matching port keyset for filter protocol and keys");
1206 goto out;
1207 }
1208 }
1209
1210 /* provide the l3 protocol to guide the keyset selection */
1211 err = vcap_val_rule(vrule, state.l3_proto);
1212 if (err) {
1213 vcap_set_tc_exterr(fco, vrule);
1214 goto out;
1215 }
1216 err = vcap_add_rule(vrule);
1217 if (err)
1218 NL_SET_ERR_MSG_MOD(fco->common.extack,
1219 "Could not add the filter");
1220
1221 if (state.l3_proto == ETH_P_ALL)
1222 err = sparx5_tc_add_remaining_rules(vctrl, fco, vrule, admin,
1223 &multi);
1224
1225out:
1226 vcap_free_rule(vrule);
1227 return err;
1228}
1229
1230static void sparx5_tc_free_psfp_resources(struct sparx5 *sparx5,
1231 struct vcap_rule *vrule)
1232{
1233 struct vcap_client_actionfield *afield;
1234 u32 isdx, sfid, sgid, fmid;
1235
1236 /* Check if VCAP_AF_ISDX_VAL action is set for this rule - and if
1237 * it is used for stream and/or flow-meter classification.
1238 */
1239 afield = vcap_find_actionfield(vrule, VCAP_AF_ISDX_VAL);
1240 if (!afield)
1241 return;
1242
1243 isdx = afield->data.u32.value;
1244 sfid = sparx5_psfp_isdx_get_sf(sparx5, isdx);
1245
1246 if (!sfid)
1247 return;
1248
1249 fmid = sparx5_psfp_isdx_get_fm(sparx5, isdx);
1250 sgid = sparx5_psfp_sf_get_sg(sparx5, sfid);
1251
1252 if (fmid && sparx5_psfp_fm_del(sparx5, fmid) < 0)
1253 pr_err("%s:%d Could not delete invalid fmid: %d", __func__,
1254 __LINE__, fmid);
1255
1256 if (sgid && sparx5_psfp_sg_del(sparx5, sgid) < 0)
1257 pr_err("%s:%d Could not delete invalid sgid: %d", __func__,
1258 __LINE__, sgid);
1259
1260 if (sparx5_psfp_sf_del(sparx5, sfid) < 0)
1261 pr_err("%s:%d Could not delete invalid sfid: %d", __func__,
1262 __LINE__, sfid);
1263
1264 sparx5_isdx_conf_set(sparx5, isdx, 0, 0);
1265}
1266
1267static int sparx5_tc_free_rule_resources(struct net_device *ndev,
1268 struct vcap_control *vctrl,
1269 int rule_id)
1270{
1271 struct sparx5_port *port = netdev_priv(ndev);
1272 struct sparx5 *sparx5 = port->sparx5;
1273 struct vcap_rule *vrule;
1274 int ret = 0;
1275
1276 vrule = vcap_get_rule(vctrl, rule_id);
1277 if (IS_ERR(vrule))
1278 return -EINVAL;
1279
1280 sparx5_tc_free_psfp_resources(sparx5, vrule);
1281
1282 vcap_free_rule(vrule);
1283 return ret;
1284}
1285
1286static int sparx5_tc_flower_destroy(struct net_device *ndev,
1287 struct flow_cls_offload *fco,
1288 struct vcap_admin *admin)
1289{
1290 struct sparx5_port *port = netdev_priv(ndev);
1291 int err = -ENOENT, count = 0, rule_id;
1292 struct vcap_control *vctrl;
1293
1294 vctrl = port->sparx5->vcap_ctrl;
1295 while (true) {
1296 rule_id = vcap_lookup_rule_by_cookie(vctrl, fco->cookie);
1297 if (rule_id <= 0)
1298 break;
1299 if (count == 0) {
1300 /* Resources are attached to the first rule of
1301 * a set of rules. Only works if the rules are
1302 * in the correct order.
1303 */
1304 err = sparx5_tc_free_rule_resources(ndev, vctrl,
1305 rule_id);
1306 if (err)
1307 pr_err("%s:%d: could not free resources %d\n",
1308 __func__, __LINE__, rule_id);
1309 }
1310 err = vcap_del_rule(vctrl, ndev, rule_id);
1311 if (err) {
1312 pr_err("%s:%d: could not delete rule %d\n",
1313 __func__, __LINE__, rule_id);
1314 break;
1315 }
1316 }
1317 return err;
1318}
1319
1320static int sparx5_tc_flower_stats(struct net_device *ndev,
1321 struct flow_cls_offload *fco,
1322 struct vcap_admin *admin)
1323{
1324 struct sparx5_port *port = netdev_priv(ndev);
1325 struct vcap_counter ctr = {};
1326 struct vcap_control *vctrl;
1327 ulong lastused = 0;
1328 int err;
1329
1330 vctrl = port->sparx5->vcap_ctrl;
1331 err = vcap_get_rule_count_by_cookie(vctrl, &ctr, fco->cookie);
1332 if (err)
1333 return err;
1334 flow_stats_update(&fco->stats, 0x0, ctr.value, 0, lastused,
1335 FLOW_ACTION_HW_STATS_IMMEDIATE);
1336 return err;
1337}
1338
1339static int sparx5_tc_flower_template_create(struct net_device *ndev,
1340 struct flow_cls_offload *fco,
1341 struct vcap_admin *admin)
1342{
1343 struct sparx5_port *port = netdev_priv(ndev);
1344 struct vcap_tc_flower_parse_usage state = {
1345 .fco = fco,
1346 .l3_proto = ETH_P_ALL,
1347 .admin = admin,
1348 };
1349 struct sparx5_tc_flower_template *ftp;
1350 struct vcap_keyset_list kslist = {};
1351 enum vcap_keyfield_set keysets[10];
1352 struct vcap_control *vctrl;
1353 struct vcap_rule *vrule;
1354 int count, err;
1355
1356 if (admin->vtype == VCAP_TYPE_ES0) {
1357 pr_err("%s:%d: %s\n", __func__, __LINE__,
1358 "VCAP does not support templates");
1359 return -EINVAL;
1360 }
1361
1362 count = vcap_admin_rule_count(admin, fco->common.chain_index);
1363 if (count > 0) {
1364 pr_err("%s:%d: %s\n", __func__, __LINE__,
1365 "Filters are already present");
1366 return -EBUSY;
1367 }
1368
1369 ftp = kzalloc(sizeof(*ftp), GFP_KERNEL);
1370 if (!ftp)
1371 return -ENOMEM;
1372
1373 ftp->cid = fco->common.chain_index;
1374 ftp->orig = VCAP_KFS_NO_VALUE;
1375 ftp->keyset = VCAP_KFS_NO_VALUE;
1376
1377 vctrl = port->sparx5->vcap_ctrl;
1378 vrule = vcap_alloc_rule(vctrl, ndev, fco->common.chain_index,
1379 VCAP_USER_TC, fco->common.prio, 0);
1380 if (IS_ERR(vrule)) {
1381 err = PTR_ERR(vrule);
1382 goto err_rule;
1383 }
1384
1385 state.vrule = vrule;
1386 state.frule = flow_cls_offload_flow_rule(fco);
1387 err = sparx5_tc_use_dissectors(&state, admin, vrule);
1388 if (err) {
1389 pr_err("%s:%d: key error: %d\n", __func__, __LINE__, err);
1390 goto out;
1391 }
1392
1393 ftp->l3_proto = state.l3_proto;
1394
1395 sparx5_tc_flower_simplify_rule(admin, vrule, state.l3_proto);
1396
1397 /* Find the keysets that the rule can use */
1398 kslist.keysets = keysets;
1399 kslist.max = ARRAY_SIZE(keysets);
1400 if (!vcap_rule_find_keysets(vrule, &kslist)) {
1401 pr_err("%s:%d: %s\n", __func__, __LINE__,
1402 "Could not find a suitable keyset");
1403 err = -ENOENT;
1404 goto out;
1405 }
1406
1407 ftp->keyset = vcap_select_min_rule_keyset(vctrl, admin->vtype, &kslist);
1408 kslist.cnt = 0;
1409 sparx5_vcap_set_port_keyset(ndev, admin, fco->common.chain_index,
1410 state.l3_proto,
1411 ftp->keyset,
1412 &kslist);
1413
1414 if (kslist.cnt > 0)
1415 ftp->orig = kslist.keysets[0];
1416
1417 /* Store new template */
1418 list_add_tail(&ftp->list, &port->tc_templates);
1419 vcap_free_rule(vrule);
1420 return 0;
1421
1422out:
1423 vcap_free_rule(vrule);
1424err_rule:
1425 kfree(ftp);
1426 return err;
1427}
1428
1429static int sparx5_tc_flower_template_destroy(struct net_device *ndev,
1430 struct flow_cls_offload *fco,
1431 struct vcap_admin *admin)
1432{
1433 struct sparx5_port *port = netdev_priv(ndev);
1434 struct sparx5_tc_flower_template *ftp, *tmp;
1435 int err = -ENOENT;
1436
1437 /* Rules using the template are removed by the tc framework */
1438 list_for_each_entry_safe(ftp, tmp, &port->tc_templates, list) {
1439 if (ftp->cid != fco->common.chain_index)
1440 continue;
1441
1442 sparx5_vcap_set_port_keyset(ndev, admin,
1443 fco->common.chain_index,
1444 ftp->l3_proto, ftp->orig,
1445 NULL);
1446 list_del(&ftp->list);
1447 kfree(ftp);
1448 break;
1449 }
1450 return err;
1451}
1452
1453int sparx5_tc_flower(struct net_device *ndev, struct flow_cls_offload *fco,
1454 bool ingress)
1455{
1456 struct sparx5_port *port = netdev_priv(ndev);
1457 struct vcap_control *vctrl;
1458 struct vcap_admin *admin;
1459 int err = -EINVAL;
1460
1461 /* Get vcap instance from the chain id */
1462 vctrl = port->sparx5->vcap_ctrl;
1463 admin = vcap_find_admin(vctrl, fco->common.chain_index);
1464 if (!admin) {
1465 NL_SET_ERR_MSG_MOD(fco->common.extack, "Invalid chain");
1466 return err;
1467 }
1468
1469 switch (fco->command) {
1470 case FLOW_CLS_REPLACE:
1471 return sparx5_tc_flower_replace(ndev, fco, admin, ingress);
1472 case FLOW_CLS_DESTROY:
1473 return sparx5_tc_flower_destroy(ndev, fco, admin);
1474 case FLOW_CLS_STATS:
1475 return sparx5_tc_flower_stats(ndev, fco, admin);
1476 case FLOW_CLS_TMPLT_CREATE:
1477 return sparx5_tc_flower_template_create(ndev, fco, admin);
1478 case FLOW_CLS_TMPLT_DESTROY:
1479 return sparx5_tc_flower_template_destroy(ndev, fco, admin);
1480 default:
1481 return -EOPNOTSUPP;
1482 }
1483}
1// SPDX-License-Identifier: GPL-2.0+
2/* Microchip VCAP API
3 *
4 * Copyright (c) 2022 Microchip Technology Inc. and its subsidiaries.
5 */
6
7#include <net/tc_act/tc_gate.h>
8#include <net/tcp.h>
9
10#include "sparx5_tc.h"
11#include "vcap_api.h"
12#include "vcap_api_client.h"
13#include "vcap_tc.h"
14#include "sparx5_main.h"
15#include "sparx5_vcap_impl.h"
16
17#define SPX5_MAX_RULE_SIZE 13 /* allows X1, X2, X4, X6 and X12 rules */
18
19/* Collect keysets and type ids for multiple rules per size */
20struct sparx5_wildcard_rule {
21 bool selected;
22 u8 value;
23 u8 mask;
24 enum vcap_keyfield_set keyset;
25};
26
27struct sparx5_multiple_rules {
28 struct sparx5_wildcard_rule rule[SPX5_MAX_RULE_SIZE];
29};
30
31struct sparx5_tc_flower_template {
32 struct list_head list; /* for insertion in the list of templates */
33 int cid; /* chain id */
34 enum vcap_keyfield_set orig; /* keyset used before the template */
35 enum vcap_keyfield_set keyset; /* new keyset used by template */
36 u16 l3_proto; /* protocol specified in the template */
37};
38
39/* SparX-5 VCAP fragment types:
40 * 0 = no fragment, 1 = initial fragment,
41 * 2 = suspicious fragment, 3 = valid follow-up fragment
42 */
43enum { /* key / mask */
44 FRAG_NOT = 0x03, /* 0 / 3 */
45 FRAG_SOME = 0x11, /* 1 / 1 */
46 FRAG_FIRST = 0x13, /* 1 / 3 */
47 FRAG_LATER = 0x33, /* 3 / 3 */
48 FRAG_INVAL = 0xff, /* invalid */
49};
50
51/* Flower fragment flag to VCAP fragment type mapping */
52static const u8 sparx5_vcap_frag_map[4][4] = { /* is_frag */
53 { FRAG_INVAL, FRAG_INVAL, FRAG_INVAL, FRAG_FIRST }, /* 0/0 */
54 { FRAG_NOT, FRAG_NOT, FRAG_INVAL, FRAG_INVAL }, /* 0/1 */
55 { FRAG_INVAL, FRAG_INVAL, FRAG_INVAL, FRAG_INVAL }, /* 1/0 */
56 { FRAG_SOME, FRAG_LATER, FRAG_INVAL, FRAG_FIRST } /* 1/1 */
57 /* 0/0 0/1 1/0 1/1 <-- first_frag */
58};
59
60static int
61sparx5_tc_flower_es0_tpid(struct vcap_tc_flower_parse_usage *st)
62{
63 int err = 0;
64
65 switch (st->tpid) {
66 case ETH_P_8021Q:
67 err = vcap_rule_add_key_u32(st->vrule,
68 VCAP_KF_8021Q_TPID,
69 SPX5_TPID_SEL_8100, ~0);
70 break;
71 case ETH_P_8021AD:
72 err = vcap_rule_add_key_u32(st->vrule,
73 VCAP_KF_8021Q_TPID,
74 SPX5_TPID_SEL_88A8, ~0);
75 break;
76 default:
77 NL_SET_ERR_MSG_MOD(st->fco->common.extack,
78 "Invalid vlan proto");
79 err = -EINVAL;
80 break;
81 }
82 return err;
83}
84
85static int
86sparx5_tc_flower_handler_basic_usage(struct vcap_tc_flower_parse_usage *st)
87{
88 struct flow_match_basic mt;
89 int err = 0;
90
91 flow_rule_match_basic(st->frule, &mt);
92
93 if (mt.mask->n_proto) {
94 st->l3_proto = be16_to_cpu(mt.key->n_proto);
95 if (!sparx5_vcap_is_known_etype(st->admin, st->l3_proto)) {
96 err = vcap_rule_add_key_u32(st->vrule, VCAP_KF_ETYPE,
97 st->l3_proto, ~0);
98 if (err)
99 goto out;
100 } else if (st->l3_proto == ETH_P_IP) {
101 err = vcap_rule_add_key_bit(st->vrule, VCAP_KF_IP4_IS,
102 VCAP_BIT_1);
103 if (err)
104 goto out;
105 } else if (st->l3_proto == ETH_P_IPV6) {
106 err = vcap_rule_add_key_bit(st->vrule, VCAP_KF_IP4_IS,
107 VCAP_BIT_0);
108 if (err)
109 goto out;
110 if (st->admin->vtype == VCAP_TYPE_IS0) {
111 err = vcap_rule_add_key_bit(st->vrule,
112 VCAP_KF_IP_SNAP_IS,
113 VCAP_BIT_1);
114 if (err)
115 goto out;
116 }
117 }
118 }
119
120 if (mt.mask->ip_proto) {
121 st->l4_proto = mt.key->ip_proto;
122 if (st->l4_proto == IPPROTO_TCP) {
123 err = vcap_rule_add_key_bit(st->vrule,
124 VCAP_KF_TCP_IS,
125 VCAP_BIT_1);
126 if (err)
127 goto out;
128 } else if (st->l4_proto == IPPROTO_UDP) {
129 err = vcap_rule_add_key_bit(st->vrule,
130 VCAP_KF_TCP_IS,
131 VCAP_BIT_0);
132 if (err)
133 goto out;
134 if (st->admin->vtype == VCAP_TYPE_IS0) {
135 err = vcap_rule_add_key_bit(st->vrule,
136 VCAP_KF_TCP_UDP_IS,
137 VCAP_BIT_1);
138 if (err)
139 goto out;
140 }
141 } else {
142 err = vcap_rule_add_key_u32(st->vrule,
143 VCAP_KF_L3_IP_PROTO,
144 st->l4_proto, ~0);
145 if (err)
146 goto out;
147 }
148 }
149
150 st->used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC);
151
152 return err;
153
154out:
155 NL_SET_ERR_MSG_MOD(st->fco->common.extack, "ip_proto parse error");
156 return err;
157}
158
159static int
160sparx5_tc_flower_handler_control_usage(struct vcap_tc_flower_parse_usage *st)
161{
162 struct flow_match_control mt;
163 u32 value, mask;
164 int err = 0;
165
166 flow_rule_match_control(st->frule, &mt);
167
168 if (mt.mask->flags) {
169 u8 is_frag_key = !!(mt.key->flags & FLOW_DIS_IS_FRAGMENT);
170 u8 is_frag_mask = !!(mt.mask->flags & FLOW_DIS_IS_FRAGMENT);
171 u8 is_frag_idx = (is_frag_key << 1) | is_frag_mask;
172
173 u8 first_frag_key = !!(mt.key->flags & FLOW_DIS_FIRST_FRAG);
174 u8 first_frag_mask = !!(mt.mask->flags & FLOW_DIS_FIRST_FRAG);
175 u8 first_frag_idx = (first_frag_key << 1) | first_frag_mask;
176
177 /* Lookup verdict based on the 2 + 2 input bits */
178 u8 vdt = sparx5_vcap_frag_map[is_frag_idx][first_frag_idx];
179
180 if (vdt == FRAG_INVAL) {
181 NL_SET_ERR_MSG_MOD(st->fco->common.extack,
182 "Match on invalid fragment flag combination");
183 return -EINVAL;
184 }
185
186 /* Extract VCAP fragment key and mask from verdict */
187 value = (vdt >> 4) & 0x3;
188 mask = vdt & 0x3;
189
190 err = vcap_rule_add_key_u32(st->vrule,
191 VCAP_KF_L3_FRAGMENT_TYPE,
192 value, mask);
193 if (err)
194 goto out;
195 }
196
197 st->used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_CONTROL);
198
199 return err;
200
201out:
202 NL_SET_ERR_MSG_MOD(st->fco->common.extack, "ip_frag parse error");
203 return err;
204}
205
206static int
207sparx5_tc_flower_handler_cvlan_usage(struct vcap_tc_flower_parse_usage *st)
208{
209 if (st->admin->vtype != VCAP_TYPE_IS0) {
210 NL_SET_ERR_MSG_MOD(st->fco->common.extack,
211 "cvlan not supported in this VCAP");
212 return -EINVAL;
213 }
214
215 return vcap_tc_flower_handler_cvlan_usage(st);
216}
217
218static int
219sparx5_tc_flower_handler_vlan_usage(struct vcap_tc_flower_parse_usage *st)
220{
221 enum vcap_key_field vid_key = VCAP_KF_8021Q_VID_CLS;
222 enum vcap_key_field pcp_key = VCAP_KF_8021Q_PCP_CLS;
223 int err;
224
225 if (st->admin->vtype == VCAP_TYPE_IS0) {
226 vid_key = VCAP_KF_8021Q_VID0;
227 pcp_key = VCAP_KF_8021Q_PCP0;
228 }
229
230 err = vcap_tc_flower_handler_vlan_usage(st, vid_key, pcp_key);
231 if (err)
232 return err;
233
234 if (st->admin->vtype == VCAP_TYPE_ES0 && st->tpid)
235 err = sparx5_tc_flower_es0_tpid(st);
236
237 return err;
238}
239
240static int (*sparx5_tc_flower_usage_handlers[])(struct vcap_tc_flower_parse_usage *st) = {
241 [FLOW_DISSECTOR_KEY_ETH_ADDRS] = vcap_tc_flower_handler_ethaddr_usage,
242 [FLOW_DISSECTOR_KEY_IPV4_ADDRS] = vcap_tc_flower_handler_ipv4_usage,
243 [FLOW_DISSECTOR_KEY_IPV6_ADDRS] = vcap_tc_flower_handler_ipv6_usage,
244 [FLOW_DISSECTOR_KEY_CONTROL] = sparx5_tc_flower_handler_control_usage,
245 [FLOW_DISSECTOR_KEY_PORTS] = vcap_tc_flower_handler_portnum_usage,
246 [FLOW_DISSECTOR_KEY_BASIC] = sparx5_tc_flower_handler_basic_usage,
247 [FLOW_DISSECTOR_KEY_CVLAN] = sparx5_tc_flower_handler_cvlan_usage,
248 [FLOW_DISSECTOR_KEY_VLAN] = sparx5_tc_flower_handler_vlan_usage,
249 [FLOW_DISSECTOR_KEY_TCP] = vcap_tc_flower_handler_tcp_usage,
250 [FLOW_DISSECTOR_KEY_ARP] = vcap_tc_flower_handler_arp_usage,
251 [FLOW_DISSECTOR_KEY_IP] = vcap_tc_flower_handler_ip_usage,
252};
253
254static int sparx5_tc_use_dissectors(struct vcap_tc_flower_parse_usage *st,
255 struct vcap_admin *admin,
256 struct vcap_rule *vrule)
257{
258 int idx, err = 0;
259
260 for (idx = 0; idx < ARRAY_SIZE(sparx5_tc_flower_usage_handlers); ++idx) {
261 if (!flow_rule_match_key(st->frule, idx))
262 continue;
263 if (!sparx5_tc_flower_usage_handlers[idx])
264 continue;
265 err = sparx5_tc_flower_usage_handlers[idx](st);
266 if (err)
267 return err;
268 }
269
270 if (st->frule->match.dissector->used_keys ^ st->used_keys) {
271 NL_SET_ERR_MSG_MOD(st->fco->common.extack,
272 "Unsupported match item");
273 return -ENOENT;
274 }
275
276 return err;
277}
278
279static int sparx5_tc_flower_action_check(struct vcap_control *vctrl,
280 struct net_device *ndev,
281 struct flow_cls_offload *fco,
282 bool ingress)
283{
284 struct flow_rule *rule = flow_cls_offload_flow_rule(fco);
285 struct flow_action_entry *actent, *last_actent = NULL;
286 struct flow_action *act = &rule->action;
287 u64 action_mask = 0;
288 int idx;
289
290 if (!flow_action_has_entries(act)) {
291 NL_SET_ERR_MSG_MOD(fco->common.extack, "No actions");
292 return -EINVAL;
293 }
294
295 if (!flow_action_basic_hw_stats_check(act, fco->common.extack))
296 return -EOPNOTSUPP;
297
298 flow_action_for_each(idx, actent, act) {
299 if (action_mask & BIT(actent->id)) {
300 NL_SET_ERR_MSG_MOD(fco->common.extack,
301 "More actions of the same type");
302 return -EINVAL;
303 }
304 action_mask |= BIT(actent->id);
305 last_actent = actent; /* Save last action for later check */
306 }
307
308 /* Check if last action is a goto
309 * The last chain/lookup does not need to have a goto action
310 */
311 if (last_actent->id == FLOW_ACTION_GOTO) {
312 /* Check if the destination chain is in one of the VCAPs */
313 if (!vcap_is_next_lookup(vctrl, fco->common.chain_index,
314 last_actent->chain_index)) {
315 NL_SET_ERR_MSG_MOD(fco->common.extack,
316 "Invalid goto chain");
317 return -EINVAL;
318 }
319 } else if (!vcap_is_last_chain(vctrl, fco->common.chain_index,
320 ingress)) {
321 NL_SET_ERR_MSG_MOD(fco->common.extack,
322 "Last action must be 'goto'");
323 return -EINVAL;
324 }
325
326 /* Catch unsupported combinations of actions */
327 if (action_mask & BIT(FLOW_ACTION_TRAP) &&
328 action_mask & BIT(FLOW_ACTION_ACCEPT)) {
329 NL_SET_ERR_MSG_MOD(fco->common.extack,
330 "Cannot combine pass and trap action");
331 return -EOPNOTSUPP;
332 }
333
334 if (action_mask & BIT(FLOW_ACTION_VLAN_PUSH) &&
335 action_mask & BIT(FLOW_ACTION_VLAN_POP)) {
336 NL_SET_ERR_MSG_MOD(fco->common.extack,
337 "Cannot combine vlan push and pop action");
338 return -EOPNOTSUPP;
339 }
340
341 if (action_mask & BIT(FLOW_ACTION_VLAN_PUSH) &&
342 action_mask & BIT(FLOW_ACTION_VLAN_MANGLE)) {
343 NL_SET_ERR_MSG_MOD(fco->common.extack,
344 "Cannot combine vlan push and modify action");
345 return -EOPNOTSUPP;
346 }
347
348 if (action_mask & BIT(FLOW_ACTION_VLAN_POP) &&
349 action_mask & BIT(FLOW_ACTION_VLAN_MANGLE)) {
350 NL_SET_ERR_MSG_MOD(fco->common.extack,
351 "Cannot combine vlan pop and modify action");
352 return -EOPNOTSUPP;
353 }
354
355 return 0;
356}
357
358/* Add a rule counter action */
359static int sparx5_tc_add_rule_counter(struct vcap_admin *admin,
360 struct vcap_rule *vrule)
361{
362 int err;
363
364 switch (admin->vtype) {
365 case VCAP_TYPE_IS0:
366 break;
367 case VCAP_TYPE_ES0:
368 err = vcap_rule_mod_action_u32(vrule, VCAP_AF_ESDX,
369 vrule->id);
370 if (err)
371 return err;
372 vcap_rule_set_counter_id(vrule, vrule->id);
373 break;
374 case VCAP_TYPE_IS2:
375 case VCAP_TYPE_ES2:
376 err = vcap_rule_mod_action_u32(vrule, VCAP_AF_CNT_ID,
377 vrule->id);
378 if (err)
379 return err;
380 vcap_rule_set_counter_id(vrule, vrule->id);
381 break;
382 default:
383 pr_err("%s:%d: vcap type: %d not supported\n",
384 __func__, __LINE__, admin->vtype);
385 break;
386 }
387 return 0;
388}
389
390/* Collect all port keysets and apply the first of them, possibly wildcarded */
391static int sparx5_tc_select_protocol_keyset(struct net_device *ndev,
392 struct vcap_rule *vrule,
393 struct vcap_admin *admin,
394 u16 l3_proto,
395 struct sparx5_multiple_rules *multi)
396{
397 struct sparx5_port *port = netdev_priv(ndev);
398 struct vcap_keyset_list portkeysetlist = {};
399 enum vcap_keyfield_set portkeysets[10] = {};
400 struct vcap_keyset_list matches = {};
401 enum vcap_keyfield_set keysets[10];
402 int idx, jdx, err = 0, count = 0;
403 struct sparx5_wildcard_rule *mru;
404 const struct vcap_set *kinfo;
405 struct vcap_control *vctrl;
406
407 vctrl = port->sparx5->vcap_ctrl;
408
409 /* Find the keysets that the rule can use */
410 matches.keysets = keysets;
411 matches.max = ARRAY_SIZE(keysets);
412 if (!vcap_rule_find_keysets(vrule, &matches))
413 return -EINVAL;
414
415 /* Find the keysets that the port configuration supports */
416 portkeysetlist.max = ARRAY_SIZE(portkeysets);
417 portkeysetlist.keysets = portkeysets;
418 err = sparx5_vcap_get_port_keyset(ndev,
419 admin, vrule->vcap_chain_id,
420 l3_proto,
421 &portkeysetlist);
422 if (err)
423 return err;
424
425 /* Find the intersection of the two sets of keyset */
426 for (idx = 0; idx < portkeysetlist.cnt; ++idx) {
427 kinfo = vcap_keyfieldset(vctrl, admin->vtype,
428 portkeysetlist.keysets[idx]);
429 if (!kinfo)
430 continue;
431
432 /* Find a port keyset that matches the required keys
433 * If there are multiple keysets then compose a type id mask
434 */
435 for (jdx = 0; jdx < matches.cnt; ++jdx) {
436 if (portkeysetlist.keysets[idx] != matches.keysets[jdx])
437 continue;
438
439 mru = &multi->rule[kinfo->sw_per_item];
440 if (!mru->selected) {
441 mru->selected = true;
442 mru->keyset = portkeysetlist.keysets[idx];
443 mru->value = kinfo->type_id;
444 }
445 mru->value &= kinfo->type_id;
446 mru->mask |= kinfo->type_id;
447 ++count;
448 }
449 }
450 if (count == 0)
451 return -EPROTO;
452
453 if (l3_proto == ETH_P_ALL && count < portkeysetlist.cnt)
454 return -ENOENT;
455
456 for (idx = 0; idx < SPX5_MAX_RULE_SIZE; ++idx) {
457 mru = &multi->rule[idx];
458 if (!mru->selected)
459 continue;
460
461 /* Align the mask to the combined value */
462 mru->mask ^= mru->value;
463 }
464
465 /* Set the chosen keyset on the rule and set a wildcarded type if there
466 * are more than one keyset
467 */
468 for (idx = 0; idx < SPX5_MAX_RULE_SIZE; ++idx) {
469 mru = &multi->rule[idx];
470 if (!mru->selected)
471 continue;
472
473 vcap_set_rule_set_keyset(vrule, mru->keyset);
474 if (count > 1)
475 /* Some keysets do not have a type field */
476 vcap_rule_mod_key_u32(vrule, VCAP_KF_TYPE,
477 mru->value,
478 ~mru->mask);
479 mru->selected = false; /* mark as done */
480 break; /* Stop here and add more rules later */
481 }
482 return err;
483}
484
485static int sparx5_tc_add_rule_copy(struct vcap_control *vctrl,
486 struct flow_cls_offload *fco,
487 struct vcap_rule *erule,
488 struct vcap_admin *admin,
489 struct sparx5_wildcard_rule *rule)
490{
491 enum vcap_key_field keylist[] = {
492 VCAP_KF_IF_IGR_PORT_MASK,
493 VCAP_KF_IF_IGR_PORT_MASK_SEL,
494 VCAP_KF_IF_IGR_PORT_MASK_RNG,
495 VCAP_KF_LOOKUP_FIRST_IS,
496 VCAP_KF_TYPE,
497 };
498 struct vcap_rule *vrule;
499 int err;
500
501 /* Add an extra rule with a special user and the new keyset */
502 erule->user = VCAP_USER_TC_EXTRA;
503 vrule = vcap_copy_rule(erule);
504 if (IS_ERR(vrule))
505 return PTR_ERR(vrule);
506
507 /* Link the new rule to the existing rule with the cookie */
508 vrule->cookie = erule->cookie;
509 vcap_filter_rule_keys(vrule, keylist, ARRAY_SIZE(keylist), true);
510 err = vcap_set_rule_set_keyset(vrule, rule->keyset);
511 if (err) {
512 pr_err("%s:%d: could not set keyset %s in rule: %u\n",
513 __func__, __LINE__,
514 vcap_keyset_name(vctrl, rule->keyset),
515 vrule->id);
516 goto out;
517 }
518
519 /* Some keysets do not have a type field, so ignore return value */
520 vcap_rule_mod_key_u32(vrule, VCAP_KF_TYPE, rule->value, ~rule->mask);
521
522 err = vcap_set_rule_set_actionset(vrule, erule->actionset);
523 if (err)
524 goto out;
525
526 err = sparx5_tc_add_rule_counter(admin, vrule);
527 if (err)
528 goto out;
529
530 err = vcap_val_rule(vrule, ETH_P_ALL);
531 if (err) {
532 pr_err("%s:%d: could not validate rule: %u\n",
533 __func__, __LINE__, vrule->id);
534 vcap_set_tc_exterr(fco, vrule);
535 goto out;
536 }
537 err = vcap_add_rule(vrule);
538 if (err) {
539 pr_err("%s:%d: could not add rule: %u\n",
540 __func__, __LINE__, vrule->id);
541 goto out;
542 }
543out:
544 vcap_free_rule(vrule);
545 return err;
546}
547
548static int sparx5_tc_add_remaining_rules(struct vcap_control *vctrl,
549 struct flow_cls_offload *fco,
550 struct vcap_rule *erule,
551 struct vcap_admin *admin,
552 struct sparx5_multiple_rules *multi)
553{
554 int idx, err = 0;
555
556 for (idx = 0; idx < SPX5_MAX_RULE_SIZE; ++idx) {
557 if (!multi->rule[idx].selected)
558 continue;
559
560 err = sparx5_tc_add_rule_copy(vctrl, fco, erule, admin,
561 &multi->rule[idx]);
562 if (err)
563 break;
564 }
565 return err;
566}
567
568/* Add the actionset that is the default for the VCAP type */
569static int sparx5_tc_set_actionset(struct vcap_admin *admin,
570 struct vcap_rule *vrule)
571{
572 enum vcap_actionfield_set aset;
573 int err = 0;
574
575 switch (admin->vtype) {
576 case VCAP_TYPE_IS0:
577 aset = VCAP_AFS_CLASSIFICATION;
578 break;
579 case VCAP_TYPE_IS2:
580 aset = VCAP_AFS_BASE_TYPE;
581 break;
582 case VCAP_TYPE_ES0:
583 aset = VCAP_AFS_ES0;
584 break;
585 case VCAP_TYPE_ES2:
586 aset = VCAP_AFS_BASE_TYPE;
587 break;
588 default:
589 pr_err("%s:%d: %s\n", __func__, __LINE__, "Invalid VCAP type");
590 return -EINVAL;
591 }
592 /* Do not overwrite any current actionset */
593 if (vrule->actionset == VCAP_AFS_NO_VALUE)
594 err = vcap_set_rule_set_actionset(vrule, aset);
595 return err;
596}
597
598/* Add the VCAP key to match on for a rule target value */
599static int sparx5_tc_add_rule_link_target(struct vcap_admin *admin,
600 struct vcap_rule *vrule,
601 int target_cid)
602{
603 int link_val = target_cid % VCAP_CID_LOOKUP_SIZE;
604 int err;
605
606 if (!link_val)
607 return 0;
608
609 switch (admin->vtype) {
610 case VCAP_TYPE_IS0:
611 /* Add NXT_IDX key for chaining rules between IS0 instances */
612 err = vcap_rule_add_key_u32(vrule, VCAP_KF_LOOKUP_GEN_IDX_SEL,
613 1, /* enable */
614 ~0);
615 if (err)
616 return err;
617 return vcap_rule_add_key_u32(vrule, VCAP_KF_LOOKUP_GEN_IDX,
618 link_val, /* target */
619 ~0);
620 case VCAP_TYPE_IS2:
621 /* Add PAG key for chaining rules from IS0 */
622 return vcap_rule_add_key_u32(vrule, VCAP_KF_LOOKUP_PAG,
623 link_val, /* target */
624 ~0);
625 case VCAP_TYPE_ES0:
626 case VCAP_TYPE_ES2:
627 /* Add ISDX key for chaining rules from IS0 */
628 return vcap_rule_add_key_u32(vrule, VCAP_KF_ISDX_CLS, link_val,
629 ~0);
630 default:
631 break;
632 }
633 return 0;
634}
635
636/* Add the VCAP action that adds a target value to a rule */
637static int sparx5_tc_add_rule_link(struct vcap_control *vctrl,
638 struct vcap_admin *admin,
639 struct vcap_rule *vrule,
640 int from_cid, int to_cid)
641{
642 struct vcap_admin *to_admin = vcap_find_admin(vctrl, to_cid);
643 int diff, err = 0;
644
645 if (!to_admin) {
646 pr_err("%s:%d: unsupported chain direction: %d\n",
647 __func__, __LINE__, to_cid);
648 return -EINVAL;
649 }
650
651 diff = vcap_chain_offset(vctrl, from_cid, to_cid);
652 if (!diff)
653 return 0;
654
655 if (admin->vtype == VCAP_TYPE_IS0 &&
656 to_admin->vtype == VCAP_TYPE_IS0) {
657 /* Between IS0 instances the G_IDX value is used */
658 err = vcap_rule_add_action_u32(vrule, VCAP_AF_NXT_IDX, diff);
659 if (err)
660 goto out;
661 err = vcap_rule_add_action_u32(vrule, VCAP_AF_NXT_IDX_CTRL,
662 1); /* Replace */
663 if (err)
664 goto out;
665 } else if (admin->vtype == VCAP_TYPE_IS0 &&
666 to_admin->vtype == VCAP_TYPE_IS2) {
667 /* Between IS0 and IS2 the PAG value is used */
668 err = vcap_rule_add_action_u32(vrule, VCAP_AF_PAG_VAL, diff);
669 if (err)
670 goto out;
671 err = vcap_rule_add_action_u32(vrule,
672 VCAP_AF_PAG_OVERRIDE_MASK,
673 0xff);
674 if (err)
675 goto out;
676 } else if (admin->vtype == VCAP_TYPE_IS0 &&
677 (to_admin->vtype == VCAP_TYPE_ES0 ||
678 to_admin->vtype == VCAP_TYPE_ES2)) {
679 /* Between IS0 and ES0/ES2 the ISDX value is used */
680 err = vcap_rule_add_action_u32(vrule, VCAP_AF_ISDX_VAL,
681 diff);
682 if (err)
683 goto out;
684 err = vcap_rule_add_action_bit(vrule,
685 VCAP_AF_ISDX_ADD_REPLACE_SEL,
686 VCAP_BIT_1);
687 if (err)
688 goto out;
689 } else {
690 pr_err("%s:%d: unsupported chain destination: %d\n",
691 __func__, __LINE__, to_cid);
692 err = -EOPNOTSUPP;
693 }
694out:
695 return err;
696}
697
698static int sparx5_tc_flower_parse_act_gate(struct sparx5_psfp_sg *sg,
699 struct flow_action_entry *act,
700 struct netlink_ext_ack *extack)
701{
702 int i;
703
704 if (act->gate.prio < -1 || act->gate.prio > SPX5_PSFP_SG_MAX_IPV) {
705 NL_SET_ERR_MSG_MOD(extack, "Invalid gate priority");
706 return -EINVAL;
707 }
708
709 if (act->gate.cycletime < SPX5_PSFP_SG_MIN_CYCLE_TIME_NS ||
710 act->gate.cycletime > SPX5_PSFP_SG_MAX_CYCLE_TIME_NS) {
711 NL_SET_ERR_MSG_MOD(extack, "Invalid gate cycletime");
712 return -EINVAL;
713 }
714
715 if (act->gate.cycletimeext > SPX5_PSFP_SG_MAX_CYCLE_TIME_NS) {
716 NL_SET_ERR_MSG_MOD(extack, "Invalid gate cycletimeext");
717 return -EINVAL;
718 }
719
720 if (act->gate.num_entries >= SPX5_PSFP_GCE_CNT) {
721 NL_SET_ERR_MSG_MOD(extack, "Invalid number of gate entries");
722 return -EINVAL;
723 }
724
725 sg->gate_state = true;
726 sg->ipv = act->gate.prio;
727 sg->num_entries = act->gate.num_entries;
728 sg->cycletime = act->gate.cycletime;
729 sg->cycletimeext = act->gate.cycletimeext;
730
731 for (i = 0; i < sg->num_entries; i++) {
732 sg->gce[i].gate_state = !!act->gate.entries[i].gate_state;
733 sg->gce[i].interval = act->gate.entries[i].interval;
734 sg->gce[i].ipv = act->gate.entries[i].ipv;
735 sg->gce[i].maxoctets = act->gate.entries[i].maxoctets;
736 }
737
738 return 0;
739}
740
741static int sparx5_tc_flower_parse_act_police(struct sparx5_policer *pol,
742 struct flow_action_entry *act,
743 struct netlink_ext_ack *extack)
744{
745 pol->type = SPX5_POL_SERVICE;
746 pol->rate = div_u64(act->police.rate_bytes_ps, 1000) * 8;
747 pol->burst = act->police.burst;
748 pol->idx = act->hw_index;
749
750 /* rate is now in kbit */
751 if (pol->rate > DIV_ROUND_UP(SPX5_SDLB_GROUP_RATE_MAX, 1000)) {
752 NL_SET_ERR_MSG_MOD(extack, "Maximum rate exceeded");
753 return -EINVAL;
754 }
755
756 if (act->police.exceed.act_id != FLOW_ACTION_DROP) {
757 NL_SET_ERR_MSG_MOD(extack, "Offload not supported when exceed action is not drop");
758 return -EOPNOTSUPP;
759 }
760
761 if (act->police.notexceed.act_id != FLOW_ACTION_PIPE &&
762 act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) {
763 NL_SET_ERR_MSG_MOD(extack, "Offload not supported when conform action is not pipe or ok");
764 return -EOPNOTSUPP;
765 }
766
767 return 0;
768}
769
770static int sparx5_tc_flower_psfp_setup(struct sparx5 *sparx5,
771 struct vcap_rule *vrule, int sg_idx,
772 int pol_idx, struct sparx5_psfp_sg *sg,
773 struct sparx5_psfp_fm *fm,
774 struct sparx5_psfp_sf *sf)
775{
776 u32 psfp_sfid = 0, psfp_fmid = 0, psfp_sgid = 0;
777 int ret;
778
779 /* Must always have a stream gate - max sdu (filter option) is evaluated
780 * after frames have passed the gate, so in case of only a policer, we
781 * allocate a stream gate that is always open.
782 */
783 if (sg_idx < 0) {
784 sg_idx = sparx5_pool_idx_to_id(SPX5_PSFP_SG_OPEN);
785 sg->ipv = 0; /* Disabled */
786 sg->cycletime = SPX5_PSFP_SG_CYCLE_TIME_DEFAULT;
787 sg->num_entries = 1;
788 sg->gate_state = 1; /* Open */
789 sg->gate_enabled = 1;
790 sg->gce[0].gate_state = 1;
791 sg->gce[0].interval = SPX5_PSFP_SG_CYCLE_TIME_DEFAULT;
792 sg->gce[0].ipv = 0;
793 sg->gce[0].maxoctets = 0; /* Disabled */
794 }
795
796 ret = sparx5_psfp_sg_add(sparx5, sg_idx, sg, &psfp_sgid);
797 if (ret < 0)
798 return ret;
799
800 if (pol_idx >= 0) {
801 /* Add new flow-meter */
802 ret = sparx5_psfp_fm_add(sparx5, pol_idx, fm, &psfp_fmid);
803 if (ret < 0)
804 return ret;
805 }
806
807 /* Map stream filter to stream gate */
808 sf->sgid = psfp_sgid;
809
810 /* Add new stream-filter and map it to a steam gate */
811 ret = sparx5_psfp_sf_add(sparx5, sf, &psfp_sfid);
812 if (ret < 0)
813 return ret;
814
815 /* Streams are classified by ISDX - map ISDX 1:1 to sfid for now. */
816 sparx5_isdx_conf_set(sparx5, psfp_sfid, psfp_sfid, psfp_fmid);
817
818 ret = vcap_rule_add_action_bit(vrule, VCAP_AF_ISDX_ADD_REPLACE_SEL,
819 VCAP_BIT_1);
820 if (ret)
821 return ret;
822
823 ret = vcap_rule_add_action_u32(vrule, VCAP_AF_ISDX_VAL, psfp_sfid);
824 if (ret)
825 return ret;
826
827 return 0;
828}
829
830/* Handle the action trap for a VCAP rule */
831static int sparx5_tc_action_trap(struct vcap_admin *admin,
832 struct vcap_rule *vrule,
833 struct flow_cls_offload *fco)
834{
835 int err = 0;
836
837 switch (admin->vtype) {
838 case VCAP_TYPE_IS2:
839 err = vcap_rule_add_action_bit(vrule,
840 VCAP_AF_CPU_COPY_ENA,
841 VCAP_BIT_1);
842 if (err)
843 break;
844 err = vcap_rule_add_action_u32(vrule,
845 VCAP_AF_CPU_QUEUE_NUM, 0);
846 if (err)
847 break;
848 err = vcap_rule_add_action_u32(vrule,
849 VCAP_AF_MASK_MODE,
850 SPX5_PMM_REPLACE_ALL);
851 break;
852 case VCAP_TYPE_ES0:
853 err = vcap_rule_add_action_u32(vrule,
854 VCAP_AF_FWD_SEL,
855 SPX5_FWSEL_REDIRECT_TO_LOOPBACK);
856 break;
857 case VCAP_TYPE_ES2:
858 err = vcap_rule_add_action_bit(vrule,
859 VCAP_AF_CPU_COPY_ENA,
860 VCAP_BIT_1);
861 if (err)
862 break;
863 err = vcap_rule_add_action_u32(vrule,
864 VCAP_AF_CPU_QUEUE_NUM, 0);
865 break;
866 default:
867 NL_SET_ERR_MSG_MOD(fco->common.extack,
868 "Trap action not supported in this VCAP");
869 err = -EOPNOTSUPP;
870 break;
871 }
872 return err;
873}
874
875static int sparx5_tc_action_vlan_pop(struct vcap_admin *admin,
876 struct vcap_rule *vrule,
877 struct flow_cls_offload *fco,
878 u16 tpid)
879{
880 int err = 0;
881
882 switch (admin->vtype) {
883 case VCAP_TYPE_ES0:
884 break;
885 default:
886 NL_SET_ERR_MSG_MOD(fco->common.extack,
887 "VLAN pop action not supported in this VCAP");
888 return -EOPNOTSUPP;
889 }
890
891 switch (tpid) {
892 case ETH_P_8021Q:
893 case ETH_P_8021AD:
894 err = vcap_rule_add_action_u32(vrule,
895 VCAP_AF_PUSH_OUTER_TAG,
896 SPX5_OTAG_UNTAG);
897 break;
898 default:
899 NL_SET_ERR_MSG_MOD(fco->common.extack,
900 "Invalid vlan proto");
901 err = -EINVAL;
902 }
903 return err;
904}
905
906static int sparx5_tc_action_vlan_modify(struct vcap_admin *admin,
907 struct vcap_rule *vrule,
908 struct flow_cls_offload *fco,
909 struct flow_action_entry *act,
910 u16 tpid)
911{
912 int err = 0;
913
914 switch (admin->vtype) {
915 case VCAP_TYPE_ES0:
916 err = vcap_rule_add_action_u32(vrule,
917 VCAP_AF_PUSH_OUTER_TAG,
918 SPX5_OTAG_TAG_A);
919 if (err)
920 return err;
921 break;
922 default:
923 NL_SET_ERR_MSG_MOD(fco->common.extack,
924 "VLAN modify action not supported in this VCAP");
925 return -EOPNOTSUPP;
926 }
927
928 switch (tpid) {
929 case ETH_P_8021Q:
930 err = vcap_rule_add_action_u32(vrule,
931 VCAP_AF_TAG_A_TPID_SEL,
932 SPX5_TPID_A_8100);
933 break;
934 case ETH_P_8021AD:
935 err = vcap_rule_add_action_u32(vrule,
936 VCAP_AF_TAG_A_TPID_SEL,
937 SPX5_TPID_A_88A8);
938 break;
939 default:
940 NL_SET_ERR_MSG_MOD(fco->common.extack,
941 "Invalid vlan proto");
942 err = -EINVAL;
943 }
944 if (err)
945 return err;
946
947 err = vcap_rule_add_action_u32(vrule,
948 VCAP_AF_TAG_A_VID_SEL,
949 SPX5_VID_A_VAL);
950 if (err)
951 return err;
952
953 err = vcap_rule_add_action_u32(vrule,
954 VCAP_AF_VID_A_VAL,
955 act->vlan.vid);
956 if (err)
957 return err;
958
959 err = vcap_rule_add_action_u32(vrule,
960 VCAP_AF_TAG_A_PCP_SEL,
961 SPX5_PCP_A_VAL);
962 if (err)
963 return err;
964
965 err = vcap_rule_add_action_u32(vrule,
966 VCAP_AF_PCP_A_VAL,
967 act->vlan.prio);
968 if (err)
969 return err;
970
971 return vcap_rule_add_action_u32(vrule,
972 VCAP_AF_TAG_A_DEI_SEL,
973 SPX5_DEI_A_CLASSIFIED);
974}
975
976static int sparx5_tc_action_vlan_push(struct vcap_admin *admin,
977 struct vcap_rule *vrule,
978 struct flow_cls_offload *fco,
979 struct flow_action_entry *act,
980 u16 tpid)
981{
982 u16 act_tpid = be16_to_cpu(act->vlan.proto);
983 int err = 0;
984
985 switch (admin->vtype) {
986 case VCAP_TYPE_ES0:
987 break;
988 default:
989 NL_SET_ERR_MSG_MOD(fco->common.extack,
990 "VLAN push action not supported in this VCAP");
991 return -EOPNOTSUPP;
992 }
993
994 if (tpid == ETH_P_8021AD) {
995 NL_SET_ERR_MSG_MOD(fco->common.extack,
996 "Cannot push on double tagged frames");
997 return -EOPNOTSUPP;
998 }
999
1000 err = sparx5_tc_action_vlan_modify(admin, vrule, fco, act, act_tpid);
1001 if (err)
1002 return err;
1003
1004 switch (act_tpid) {
1005 case ETH_P_8021Q:
1006 break;
1007 case ETH_P_8021AD:
1008 /* Push classified tag as inner tag */
1009 err = vcap_rule_add_action_u32(vrule,
1010 VCAP_AF_PUSH_INNER_TAG,
1011 SPX5_ITAG_PUSH_B_TAG);
1012 if (err)
1013 break;
1014 err = vcap_rule_add_action_u32(vrule,
1015 VCAP_AF_TAG_B_TPID_SEL,
1016 SPX5_TPID_B_CLASSIFIED);
1017 break;
1018 default:
1019 NL_SET_ERR_MSG_MOD(fco->common.extack,
1020 "Invalid vlan proto");
1021 err = -EINVAL;
1022 }
1023 return err;
1024}
1025
1026/* Remove rule keys that may prevent templates from matching a keyset */
1027static void sparx5_tc_flower_simplify_rule(struct vcap_admin *admin,
1028 struct vcap_rule *vrule,
1029 u16 l3_proto)
1030{
1031 switch (admin->vtype) {
1032 case VCAP_TYPE_IS0:
1033 vcap_rule_rem_key(vrule, VCAP_KF_ETYPE);
1034 switch (l3_proto) {
1035 case ETH_P_IP:
1036 break;
1037 case ETH_P_IPV6:
1038 vcap_rule_rem_key(vrule, VCAP_KF_IP_SNAP_IS);
1039 break;
1040 default:
1041 break;
1042 }
1043 break;
1044 case VCAP_TYPE_ES2:
1045 switch (l3_proto) {
1046 case ETH_P_IP:
1047 if (vrule->keyset == VCAP_KFS_IP4_OTHER)
1048 vcap_rule_rem_key(vrule, VCAP_KF_TCP_IS);
1049 break;
1050 case ETH_P_IPV6:
1051 if (vrule->keyset == VCAP_KFS_IP6_STD)
1052 vcap_rule_rem_key(vrule, VCAP_KF_TCP_IS);
1053 vcap_rule_rem_key(vrule, VCAP_KF_IP4_IS);
1054 break;
1055 default:
1056 break;
1057 }
1058 break;
1059 case VCAP_TYPE_IS2:
1060 switch (l3_proto) {
1061 case ETH_P_IP:
1062 case ETH_P_IPV6:
1063 vcap_rule_rem_key(vrule, VCAP_KF_IP4_IS);
1064 break;
1065 default:
1066 break;
1067 }
1068 break;
1069 default:
1070 break;
1071 }
1072}
1073
1074static bool sparx5_tc_flower_use_template(struct net_device *ndev,
1075 struct flow_cls_offload *fco,
1076 struct vcap_admin *admin,
1077 struct vcap_rule *vrule)
1078{
1079 struct sparx5_port *port = netdev_priv(ndev);
1080 struct sparx5_tc_flower_template *ftp;
1081
1082 list_for_each_entry(ftp, &port->tc_templates, list) {
1083 if (ftp->cid != fco->common.chain_index)
1084 continue;
1085
1086 vcap_set_rule_set_keyset(vrule, ftp->keyset);
1087 sparx5_tc_flower_simplify_rule(admin, vrule, ftp->l3_proto);
1088 return true;
1089 }
1090 return false;
1091}
1092
1093static int sparx5_tc_flower_replace(struct net_device *ndev,
1094 struct flow_cls_offload *fco,
1095 struct vcap_admin *admin,
1096 bool ingress)
1097{
1098 struct sparx5_psfp_sf sf = { .max_sdu = SPX5_PSFP_SF_MAX_SDU };
1099 struct netlink_ext_ack *extack = fco->common.extack;
1100 int err, idx, tc_sg_idx = -1, tc_pol_idx = -1;
1101 struct vcap_tc_flower_parse_usage state = {
1102 .fco = fco,
1103 .l3_proto = ETH_P_ALL,
1104 .admin = admin,
1105 };
1106 struct sparx5_port *port = netdev_priv(ndev);
1107 struct sparx5_multiple_rules multi = {};
1108 struct sparx5 *sparx5 = port->sparx5;
1109 struct sparx5_psfp_sg sg = { 0 };
1110 struct sparx5_psfp_fm fm = { 0 };
1111 struct flow_action_entry *act;
1112 struct vcap_control *vctrl;
1113 struct flow_rule *frule;
1114 struct vcap_rule *vrule;
1115
1116 vctrl = port->sparx5->vcap_ctrl;
1117
1118 err = sparx5_tc_flower_action_check(vctrl, ndev, fco, ingress);
1119 if (err)
1120 return err;
1121
1122 vrule = vcap_alloc_rule(vctrl, ndev, fco->common.chain_index, VCAP_USER_TC,
1123 fco->common.prio, 0);
1124 if (IS_ERR(vrule))
1125 return PTR_ERR(vrule);
1126
1127 vrule->cookie = fco->cookie;
1128
1129 state.vrule = vrule;
1130 state.frule = flow_cls_offload_flow_rule(fco);
1131 err = sparx5_tc_use_dissectors(&state, admin, vrule);
1132 if (err)
1133 goto out;
1134
1135 err = sparx5_tc_add_rule_counter(admin, vrule);
1136 if (err)
1137 goto out;
1138
1139 err = sparx5_tc_add_rule_link_target(admin, vrule,
1140 fco->common.chain_index);
1141 if (err)
1142 goto out;
1143
1144 frule = flow_cls_offload_flow_rule(fco);
1145 flow_action_for_each(idx, act, &frule->action) {
1146 switch (act->id) {
1147 case FLOW_ACTION_GATE: {
1148 err = sparx5_tc_flower_parse_act_gate(&sg, act, extack);
1149 if (err < 0)
1150 goto out;
1151
1152 tc_sg_idx = act->hw_index;
1153
1154 break;
1155 }
1156 case FLOW_ACTION_POLICE: {
1157 err = sparx5_tc_flower_parse_act_police(&fm.pol, act,
1158 extack);
1159 if (err < 0)
1160 goto out;
1161
1162 tc_pol_idx = fm.pol.idx;
1163 sf.max_sdu = act->police.mtu;
1164
1165 break;
1166 }
1167 case FLOW_ACTION_TRAP:
1168 err = sparx5_tc_action_trap(admin, vrule, fco);
1169 if (err)
1170 goto out;
1171 break;
1172 case FLOW_ACTION_ACCEPT:
1173 err = sparx5_tc_set_actionset(admin, vrule);
1174 if (err)
1175 goto out;
1176 break;
1177 case FLOW_ACTION_GOTO:
1178 err = sparx5_tc_set_actionset(admin, vrule);
1179 if (err)
1180 goto out;
1181 sparx5_tc_add_rule_link(vctrl, admin, vrule,
1182 fco->common.chain_index,
1183 act->chain_index);
1184 break;
1185 case FLOW_ACTION_VLAN_POP:
1186 err = sparx5_tc_action_vlan_pop(admin, vrule, fco,
1187 state.tpid);
1188 if (err)
1189 goto out;
1190 break;
1191 case FLOW_ACTION_VLAN_PUSH:
1192 err = sparx5_tc_action_vlan_push(admin, vrule, fco,
1193 act, state.tpid);
1194 if (err)
1195 goto out;
1196 break;
1197 case FLOW_ACTION_VLAN_MANGLE:
1198 err = sparx5_tc_action_vlan_modify(admin, vrule, fco,
1199 act, state.tpid);
1200 if (err)
1201 goto out;
1202 break;
1203 default:
1204 NL_SET_ERR_MSG_MOD(fco->common.extack,
1205 "Unsupported TC action");
1206 err = -EOPNOTSUPP;
1207 goto out;
1208 }
1209 }
1210
1211 /* Setup PSFP */
1212 if (tc_sg_idx >= 0 || tc_pol_idx >= 0) {
1213 err = sparx5_tc_flower_psfp_setup(sparx5, vrule, tc_sg_idx,
1214 tc_pol_idx, &sg, &fm, &sf);
1215 if (err)
1216 goto out;
1217 }
1218
1219 if (!sparx5_tc_flower_use_template(ndev, fco, admin, vrule)) {
1220 err = sparx5_tc_select_protocol_keyset(ndev, vrule, admin,
1221 state.l3_proto, &multi);
1222 if (err) {
1223 NL_SET_ERR_MSG_MOD(fco->common.extack,
1224 "No matching port keyset for filter protocol and keys");
1225 goto out;
1226 }
1227 }
1228
1229 /* provide the l3 protocol to guide the keyset selection */
1230 err = vcap_val_rule(vrule, state.l3_proto);
1231 if (err) {
1232 vcap_set_tc_exterr(fco, vrule);
1233 goto out;
1234 }
1235 err = vcap_add_rule(vrule);
1236 if (err)
1237 NL_SET_ERR_MSG_MOD(fco->common.extack,
1238 "Could not add the filter");
1239
1240 if (state.l3_proto == ETH_P_ALL)
1241 err = sparx5_tc_add_remaining_rules(vctrl, fco, vrule, admin,
1242 &multi);
1243
1244out:
1245 vcap_free_rule(vrule);
1246 return err;
1247}
1248
1249static void sparx5_tc_free_psfp_resources(struct sparx5 *sparx5,
1250 struct vcap_rule *vrule)
1251{
1252 struct vcap_client_actionfield *afield;
1253 u32 isdx, sfid, sgid, fmid;
1254
1255 /* Check if VCAP_AF_ISDX_VAL action is set for this rule - and if
1256 * it is used for stream and/or flow-meter classification.
1257 */
1258 afield = vcap_find_actionfield(vrule, VCAP_AF_ISDX_VAL);
1259 if (!afield)
1260 return;
1261
1262 isdx = afield->data.u32.value;
1263 sfid = sparx5_psfp_isdx_get_sf(sparx5, isdx);
1264
1265 if (!sfid)
1266 return;
1267
1268 fmid = sparx5_psfp_isdx_get_fm(sparx5, isdx);
1269 sgid = sparx5_psfp_sf_get_sg(sparx5, sfid);
1270
1271 if (fmid && sparx5_psfp_fm_del(sparx5, fmid) < 0)
1272 pr_err("%s:%d Could not delete invalid fmid: %d", __func__,
1273 __LINE__, fmid);
1274
1275 if (sgid && sparx5_psfp_sg_del(sparx5, sgid) < 0)
1276 pr_err("%s:%d Could not delete invalid sgid: %d", __func__,
1277 __LINE__, sgid);
1278
1279 if (sparx5_psfp_sf_del(sparx5, sfid) < 0)
1280 pr_err("%s:%d Could not delete invalid sfid: %d", __func__,
1281 __LINE__, sfid);
1282
1283 sparx5_isdx_conf_set(sparx5, isdx, 0, 0);
1284}
1285
1286static int sparx5_tc_free_rule_resources(struct net_device *ndev,
1287 struct vcap_control *vctrl,
1288 int rule_id)
1289{
1290 struct sparx5_port *port = netdev_priv(ndev);
1291 struct sparx5 *sparx5 = port->sparx5;
1292 struct vcap_rule *vrule;
1293 int ret = 0;
1294
1295 vrule = vcap_get_rule(vctrl, rule_id);
1296 if (IS_ERR(vrule))
1297 return -EINVAL;
1298
1299 sparx5_tc_free_psfp_resources(sparx5, vrule);
1300
1301 vcap_free_rule(vrule);
1302 return ret;
1303}
1304
1305static int sparx5_tc_flower_destroy(struct net_device *ndev,
1306 struct flow_cls_offload *fco,
1307 struct vcap_admin *admin)
1308{
1309 struct sparx5_port *port = netdev_priv(ndev);
1310 int err = -ENOENT, count = 0, rule_id;
1311 struct vcap_control *vctrl;
1312
1313 vctrl = port->sparx5->vcap_ctrl;
1314 while (true) {
1315 rule_id = vcap_lookup_rule_by_cookie(vctrl, fco->cookie);
1316 if (rule_id <= 0)
1317 break;
1318 if (count == 0) {
1319 /* Resources are attached to the first rule of
1320 * a set of rules. Only works if the rules are
1321 * in the correct order.
1322 */
1323 err = sparx5_tc_free_rule_resources(ndev, vctrl,
1324 rule_id);
1325 if (err)
1326 pr_err("%s:%d: could not free resources %d\n",
1327 __func__, __LINE__, rule_id);
1328 }
1329 err = vcap_del_rule(vctrl, ndev, rule_id);
1330 if (err) {
1331 pr_err("%s:%d: could not delete rule %d\n",
1332 __func__, __LINE__, rule_id);
1333 break;
1334 }
1335 }
1336 return err;
1337}
1338
1339static int sparx5_tc_flower_stats(struct net_device *ndev,
1340 struct flow_cls_offload *fco,
1341 struct vcap_admin *admin)
1342{
1343 struct sparx5_port *port = netdev_priv(ndev);
1344 struct vcap_counter ctr = {};
1345 struct vcap_control *vctrl;
1346 ulong lastused = 0;
1347 int err;
1348
1349 vctrl = port->sparx5->vcap_ctrl;
1350 err = vcap_get_rule_count_by_cookie(vctrl, &ctr, fco->cookie);
1351 if (err)
1352 return err;
1353 flow_stats_update(&fco->stats, 0x0, ctr.value, 0, lastused,
1354 FLOW_ACTION_HW_STATS_IMMEDIATE);
1355 return err;
1356}
1357
1358static int sparx5_tc_flower_template_create(struct net_device *ndev,
1359 struct flow_cls_offload *fco,
1360 struct vcap_admin *admin)
1361{
1362 struct sparx5_port *port = netdev_priv(ndev);
1363 struct vcap_tc_flower_parse_usage state = {
1364 .fco = fco,
1365 .l3_proto = ETH_P_ALL,
1366 .admin = admin,
1367 };
1368 struct sparx5_tc_flower_template *ftp;
1369 struct vcap_keyset_list kslist = {};
1370 enum vcap_keyfield_set keysets[10];
1371 struct vcap_control *vctrl;
1372 struct vcap_rule *vrule;
1373 int count, err;
1374
1375 if (admin->vtype == VCAP_TYPE_ES0) {
1376 pr_err("%s:%d: %s\n", __func__, __LINE__,
1377 "VCAP does not support templates");
1378 return -EINVAL;
1379 }
1380
1381 count = vcap_admin_rule_count(admin, fco->common.chain_index);
1382 if (count > 0) {
1383 pr_err("%s:%d: %s\n", __func__, __LINE__,
1384 "Filters are already present");
1385 return -EBUSY;
1386 }
1387
1388 ftp = kzalloc(sizeof(*ftp), GFP_KERNEL);
1389 if (!ftp)
1390 return -ENOMEM;
1391
1392 ftp->cid = fco->common.chain_index;
1393 ftp->orig = VCAP_KFS_NO_VALUE;
1394 ftp->keyset = VCAP_KFS_NO_VALUE;
1395
1396 vctrl = port->sparx5->vcap_ctrl;
1397 vrule = vcap_alloc_rule(vctrl, ndev, fco->common.chain_index,
1398 VCAP_USER_TC, fco->common.prio, 0);
1399 if (IS_ERR(vrule)) {
1400 err = PTR_ERR(vrule);
1401 goto err_rule;
1402 }
1403
1404 state.vrule = vrule;
1405 state.frule = flow_cls_offload_flow_rule(fco);
1406 err = sparx5_tc_use_dissectors(&state, admin, vrule);
1407 if (err) {
1408 pr_err("%s:%d: key error: %d\n", __func__, __LINE__, err);
1409 goto out;
1410 }
1411
1412 ftp->l3_proto = state.l3_proto;
1413
1414 sparx5_tc_flower_simplify_rule(admin, vrule, state.l3_proto);
1415
1416 /* Find the keysets that the rule can use */
1417 kslist.keysets = keysets;
1418 kslist.max = ARRAY_SIZE(keysets);
1419 if (!vcap_rule_find_keysets(vrule, &kslist)) {
1420 pr_err("%s:%d: %s\n", __func__, __LINE__,
1421 "Could not find a suitable keyset");
1422 err = -ENOENT;
1423 goto out;
1424 }
1425
1426 ftp->keyset = vcap_select_min_rule_keyset(vctrl, admin->vtype, &kslist);
1427 kslist.cnt = 0;
1428 sparx5_vcap_set_port_keyset(ndev, admin, fco->common.chain_index,
1429 state.l3_proto,
1430 ftp->keyset,
1431 &kslist);
1432
1433 if (kslist.cnt > 0)
1434 ftp->orig = kslist.keysets[0];
1435
1436 /* Store new template */
1437 list_add_tail(&ftp->list, &port->tc_templates);
1438 vcap_free_rule(vrule);
1439 return 0;
1440
1441out:
1442 vcap_free_rule(vrule);
1443err_rule:
1444 kfree(ftp);
1445 return err;
1446}
1447
1448static int sparx5_tc_flower_template_destroy(struct net_device *ndev,
1449 struct flow_cls_offload *fco,
1450 struct vcap_admin *admin)
1451{
1452 struct sparx5_port *port = netdev_priv(ndev);
1453 struct sparx5_tc_flower_template *ftp, *tmp;
1454 int err = -ENOENT;
1455
1456 /* Rules using the template are removed by the tc framework */
1457 list_for_each_entry_safe(ftp, tmp, &port->tc_templates, list) {
1458 if (ftp->cid != fco->common.chain_index)
1459 continue;
1460
1461 sparx5_vcap_set_port_keyset(ndev, admin,
1462 fco->common.chain_index,
1463 ftp->l3_proto, ftp->orig,
1464 NULL);
1465 list_del(&ftp->list);
1466 kfree(ftp);
1467 break;
1468 }
1469 return err;
1470}
1471
1472int sparx5_tc_flower(struct net_device *ndev, struct flow_cls_offload *fco,
1473 bool ingress)
1474{
1475 struct sparx5_port *port = netdev_priv(ndev);
1476 struct vcap_control *vctrl;
1477 struct vcap_admin *admin;
1478 int err = -EINVAL;
1479
1480 /* Get vcap instance from the chain id */
1481 vctrl = port->sparx5->vcap_ctrl;
1482 admin = vcap_find_admin(vctrl, fco->common.chain_index);
1483 if (!admin) {
1484 NL_SET_ERR_MSG_MOD(fco->common.extack, "Invalid chain");
1485 return err;
1486 }
1487
1488 switch (fco->command) {
1489 case FLOW_CLS_REPLACE:
1490 return sparx5_tc_flower_replace(ndev, fco, admin, ingress);
1491 case FLOW_CLS_DESTROY:
1492 return sparx5_tc_flower_destroy(ndev, fco, admin);
1493 case FLOW_CLS_STATS:
1494 return sparx5_tc_flower_stats(ndev, fco, admin);
1495 case FLOW_CLS_TMPLT_CREATE:
1496 return sparx5_tc_flower_template_create(ndev, fco, admin);
1497 case FLOW_CLS_TMPLT_DESTROY:
1498 return sparx5_tc_flower_template_destroy(ndev, fco, admin);
1499 default:
1500 return -EOPNOTSUPP;
1501 }
1502}