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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (C) 2019-2021, Intel Corporation. */
3
4#include "ice.h"
5#include "ice_tc_lib.h"
6#include "ice_fltr.h"
7#include "ice_lib.h"
8#include "ice_protocol_type.h"
9
10/**
11 * ice_tc_count_lkups - determine lookup count for switch filter
12 * @flags: TC-flower flags
13 * @headers: Pointer to TC flower filter header structure
14 * @fltr: Pointer to outer TC filter structure
15 *
16 * Determine lookup count based on TC flower input for switch filter.
17 */
18static int
19ice_tc_count_lkups(u32 flags, struct ice_tc_flower_lyr_2_4_hdrs *headers,
20 struct ice_tc_flower_fltr *fltr)
21{
22 int lkups_cnt = 0;
23
24 if (flags & ICE_TC_FLWR_FIELD_TENANT_ID)
25 lkups_cnt++;
26
27 if (flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC)
28 lkups_cnt++;
29
30 if (flags & ICE_TC_FLWR_FIELD_ENC_OPTS)
31 lkups_cnt++;
32
33 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 |
34 ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 |
35 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 |
36 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6))
37 lkups_cnt++;
38
39 if (flags & (ICE_TC_FLWR_FIELD_ENC_IP_TOS |
40 ICE_TC_FLWR_FIELD_ENC_IP_TTL))
41 lkups_cnt++;
42
43 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT)
44 lkups_cnt++;
45
46 if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID)
47 lkups_cnt++;
48
49 /* are MAC fields specified? */
50 if (flags & (ICE_TC_FLWR_FIELD_DST_MAC | ICE_TC_FLWR_FIELD_SRC_MAC))
51 lkups_cnt++;
52
53 /* is VLAN specified? */
54 if (flags & (ICE_TC_FLWR_FIELD_VLAN | ICE_TC_FLWR_FIELD_VLAN_PRIO))
55 lkups_cnt++;
56
57 /* is CVLAN specified? */
58 if (flags & (ICE_TC_FLWR_FIELD_CVLAN | ICE_TC_FLWR_FIELD_CVLAN_PRIO))
59 lkups_cnt++;
60
61 /* are PPPoE options specified? */
62 if (flags & (ICE_TC_FLWR_FIELD_PPPOE_SESSID |
63 ICE_TC_FLWR_FIELD_PPP_PROTO))
64 lkups_cnt++;
65
66 /* are IPv[4|6] fields specified? */
67 if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 | ICE_TC_FLWR_FIELD_SRC_IPV4 |
68 ICE_TC_FLWR_FIELD_DEST_IPV6 | ICE_TC_FLWR_FIELD_SRC_IPV6))
69 lkups_cnt++;
70
71 if (flags & (ICE_TC_FLWR_FIELD_IP_TOS | ICE_TC_FLWR_FIELD_IP_TTL))
72 lkups_cnt++;
73
74 /* are L2TPv3 options specified? */
75 if (flags & ICE_TC_FLWR_FIELD_L2TPV3_SESSID)
76 lkups_cnt++;
77
78 /* is L4 (TCP/UDP/any other L4 protocol fields) specified? */
79 if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT |
80 ICE_TC_FLWR_FIELD_SRC_L4_PORT))
81 lkups_cnt++;
82
83 return lkups_cnt;
84}
85
86static enum ice_protocol_type ice_proto_type_from_mac(bool inner)
87{
88 return inner ? ICE_MAC_IL : ICE_MAC_OFOS;
89}
90
91static enum ice_protocol_type ice_proto_type_from_etype(bool inner)
92{
93 return inner ? ICE_ETYPE_IL : ICE_ETYPE_OL;
94}
95
96static enum ice_protocol_type ice_proto_type_from_ipv4(bool inner)
97{
98 return inner ? ICE_IPV4_IL : ICE_IPV4_OFOS;
99}
100
101static enum ice_protocol_type ice_proto_type_from_ipv6(bool inner)
102{
103 return inner ? ICE_IPV6_IL : ICE_IPV6_OFOS;
104}
105
106static enum ice_protocol_type ice_proto_type_from_l4_port(u16 ip_proto)
107{
108 switch (ip_proto) {
109 case IPPROTO_TCP:
110 return ICE_TCP_IL;
111 case IPPROTO_UDP:
112 return ICE_UDP_ILOS;
113 }
114
115 return 0;
116}
117
118static enum ice_protocol_type
119ice_proto_type_from_tunnel(enum ice_tunnel_type type)
120{
121 switch (type) {
122 case TNL_VXLAN:
123 return ICE_VXLAN;
124 case TNL_GENEVE:
125 return ICE_GENEVE;
126 case TNL_GRETAP:
127 return ICE_NVGRE;
128 case TNL_GTPU:
129 /* NO_PAY profiles will not work with GTP-U */
130 return ICE_GTP;
131 case TNL_GTPC:
132 return ICE_GTP_NO_PAY;
133 default:
134 return 0;
135 }
136}
137
138static enum ice_sw_tunnel_type
139ice_sw_type_from_tunnel(enum ice_tunnel_type type)
140{
141 switch (type) {
142 case TNL_VXLAN:
143 return ICE_SW_TUN_VXLAN;
144 case TNL_GENEVE:
145 return ICE_SW_TUN_GENEVE;
146 case TNL_GRETAP:
147 return ICE_SW_TUN_NVGRE;
148 case TNL_GTPU:
149 return ICE_SW_TUN_GTPU;
150 case TNL_GTPC:
151 return ICE_SW_TUN_GTPC;
152 default:
153 return ICE_NON_TUN;
154 }
155}
156
157static u16 ice_check_supported_vlan_tpid(u16 vlan_tpid)
158{
159 switch (vlan_tpid) {
160 case ETH_P_8021Q:
161 case ETH_P_8021AD:
162 case ETH_P_QINQ1:
163 return vlan_tpid;
164 default:
165 return 0;
166 }
167}
168
169static int
170ice_tc_fill_tunnel_outer(u32 flags, struct ice_tc_flower_fltr *fltr,
171 struct ice_adv_lkup_elem *list)
172{
173 struct ice_tc_flower_lyr_2_4_hdrs *hdr = &fltr->outer_headers;
174 int i = 0;
175
176 if (flags & ICE_TC_FLWR_FIELD_TENANT_ID) {
177 u32 tenant_id;
178
179 list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type);
180 switch (fltr->tunnel_type) {
181 case TNL_VXLAN:
182 case TNL_GENEVE:
183 tenant_id = be32_to_cpu(fltr->tenant_id) << 8;
184 list[i].h_u.tnl_hdr.vni = cpu_to_be32(tenant_id);
185 memcpy(&list[i].m_u.tnl_hdr.vni, "\xff\xff\xff\x00", 4);
186 i++;
187 break;
188 case TNL_GRETAP:
189 list[i].h_u.nvgre_hdr.tni_flow = fltr->tenant_id;
190 memcpy(&list[i].m_u.nvgre_hdr.tni_flow,
191 "\xff\xff\xff\xff", 4);
192 i++;
193 break;
194 case TNL_GTPC:
195 case TNL_GTPU:
196 list[i].h_u.gtp_hdr.teid = fltr->tenant_id;
197 memcpy(&list[i].m_u.gtp_hdr.teid,
198 "\xff\xff\xff\xff", 4);
199 i++;
200 break;
201 default:
202 break;
203 }
204 }
205
206 if (flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC) {
207 list[i].type = ice_proto_type_from_mac(false);
208 ether_addr_copy(list[i].h_u.eth_hdr.dst_addr,
209 hdr->l2_key.dst_mac);
210 ether_addr_copy(list[i].m_u.eth_hdr.dst_addr,
211 hdr->l2_mask.dst_mac);
212 i++;
213 }
214
215 if (flags & ICE_TC_FLWR_FIELD_ENC_OPTS &&
216 (fltr->tunnel_type == TNL_GTPU || fltr->tunnel_type == TNL_GTPC)) {
217 list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type);
218
219 if (fltr->gtp_pdu_info_masks.pdu_type) {
220 list[i].h_u.gtp_hdr.pdu_type =
221 fltr->gtp_pdu_info_keys.pdu_type << 4;
222 memcpy(&list[i].m_u.gtp_hdr.pdu_type, "\xf0", 1);
223 }
224
225 if (fltr->gtp_pdu_info_masks.qfi) {
226 list[i].h_u.gtp_hdr.qfi = fltr->gtp_pdu_info_keys.qfi;
227 memcpy(&list[i].m_u.gtp_hdr.qfi, "\x3f", 1);
228 }
229
230 i++;
231 }
232
233 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 |
234 ICE_TC_FLWR_FIELD_ENC_DEST_IPV4)) {
235 list[i].type = ice_proto_type_from_ipv4(false);
236
237 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV4) {
238 list[i].h_u.ipv4_hdr.src_addr = hdr->l3_key.src_ipv4;
239 list[i].m_u.ipv4_hdr.src_addr = hdr->l3_mask.src_ipv4;
240 }
241 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV4) {
242 list[i].h_u.ipv4_hdr.dst_addr = hdr->l3_key.dst_ipv4;
243 list[i].m_u.ipv4_hdr.dst_addr = hdr->l3_mask.dst_ipv4;
244 }
245 i++;
246 }
247
248 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 |
249 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6)) {
250 list[i].type = ice_proto_type_from_ipv6(false);
251
252 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV6) {
253 memcpy(&list[i].h_u.ipv6_hdr.src_addr,
254 &hdr->l3_key.src_ipv6_addr,
255 sizeof(hdr->l3_key.src_ipv6_addr));
256 memcpy(&list[i].m_u.ipv6_hdr.src_addr,
257 &hdr->l3_mask.src_ipv6_addr,
258 sizeof(hdr->l3_mask.src_ipv6_addr));
259 }
260 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV6) {
261 memcpy(&list[i].h_u.ipv6_hdr.dst_addr,
262 &hdr->l3_key.dst_ipv6_addr,
263 sizeof(hdr->l3_key.dst_ipv6_addr));
264 memcpy(&list[i].m_u.ipv6_hdr.dst_addr,
265 &hdr->l3_mask.dst_ipv6_addr,
266 sizeof(hdr->l3_mask.dst_ipv6_addr));
267 }
268 i++;
269 }
270
271 if (fltr->inner_headers.l2_key.n_proto == htons(ETH_P_IP) &&
272 (flags & (ICE_TC_FLWR_FIELD_ENC_IP_TOS |
273 ICE_TC_FLWR_FIELD_ENC_IP_TTL))) {
274 list[i].type = ice_proto_type_from_ipv4(false);
275
276 if (flags & ICE_TC_FLWR_FIELD_ENC_IP_TOS) {
277 list[i].h_u.ipv4_hdr.tos = hdr->l3_key.tos;
278 list[i].m_u.ipv4_hdr.tos = hdr->l3_mask.tos;
279 }
280
281 if (flags & ICE_TC_FLWR_FIELD_ENC_IP_TTL) {
282 list[i].h_u.ipv4_hdr.time_to_live = hdr->l3_key.ttl;
283 list[i].m_u.ipv4_hdr.time_to_live = hdr->l3_mask.ttl;
284 }
285
286 i++;
287 }
288
289 if (fltr->inner_headers.l2_key.n_proto == htons(ETH_P_IPV6) &&
290 (flags & (ICE_TC_FLWR_FIELD_ENC_IP_TOS |
291 ICE_TC_FLWR_FIELD_ENC_IP_TTL))) {
292 struct ice_ipv6_hdr *hdr_h, *hdr_m;
293
294 hdr_h = &list[i].h_u.ipv6_hdr;
295 hdr_m = &list[i].m_u.ipv6_hdr;
296 list[i].type = ice_proto_type_from_ipv6(false);
297
298 if (flags & ICE_TC_FLWR_FIELD_ENC_IP_TOS) {
299 be32p_replace_bits(&hdr_h->be_ver_tc_flow,
300 hdr->l3_key.tos,
301 ICE_IPV6_HDR_TC_MASK);
302 be32p_replace_bits(&hdr_m->be_ver_tc_flow,
303 hdr->l3_mask.tos,
304 ICE_IPV6_HDR_TC_MASK);
305 }
306
307 if (flags & ICE_TC_FLWR_FIELD_ENC_IP_TTL) {
308 hdr_h->hop_limit = hdr->l3_key.ttl;
309 hdr_m->hop_limit = hdr->l3_mask.ttl;
310 }
311
312 i++;
313 }
314
315 if ((flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) &&
316 hdr->l3_key.ip_proto == IPPROTO_UDP) {
317 list[i].type = ICE_UDP_OF;
318 list[i].h_u.l4_hdr.dst_port = hdr->l4_key.dst_port;
319 list[i].m_u.l4_hdr.dst_port = hdr->l4_mask.dst_port;
320 i++;
321 }
322
323 return i;
324}
325
326/**
327 * ice_tc_fill_rules - fill filter rules based on TC fltr
328 * @hw: pointer to HW structure
329 * @flags: tc flower field flags
330 * @tc_fltr: pointer to TC flower filter
331 * @list: list of advance rule elements
332 * @rule_info: pointer to information about rule
333 * @l4_proto: pointer to information such as L4 proto type
334 *
335 * Fill ice_adv_lkup_elem list based on TC flower flags and
336 * TC flower headers. This list should be used to add
337 * advance filter in hardware.
338 */
339static int
340ice_tc_fill_rules(struct ice_hw *hw, u32 flags,
341 struct ice_tc_flower_fltr *tc_fltr,
342 struct ice_adv_lkup_elem *list,
343 struct ice_adv_rule_info *rule_info,
344 u16 *l4_proto)
345{
346 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers;
347 bool inner = false;
348 u16 vlan_tpid = 0;
349 int i = 0;
350
351 rule_info->vlan_type = vlan_tpid;
352
353 rule_info->tun_type = ice_sw_type_from_tunnel(tc_fltr->tunnel_type);
354 if (tc_fltr->tunnel_type != TNL_LAST) {
355 i = ice_tc_fill_tunnel_outer(flags, tc_fltr, list);
356
357 headers = &tc_fltr->inner_headers;
358 inner = true;
359 }
360
361 if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) {
362 list[i].type = ice_proto_type_from_etype(inner);
363 list[i].h_u.ethertype.ethtype_id = headers->l2_key.n_proto;
364 list[i].m_u.ethertype.ethtype_id = headers->l2_mask.n_proto;
365 i++;
366 }
367
368 if (flags & (ICE_TC_FLWR_FIELD_DST_MAC |
369 ICE_TC_FLWR_FIELD_SRC_MAC)) {
370 struct ice_tc_l2_hdr *l2_key, *l2_mask;
371
372 l2_key = &headers->l2_key;
373 l2_mask = &headers->l2_mask;
374
375 list[i].type = ice_proto_type_from_mac(inner);
376 if (flags & ICE_TC_FLWR_FIELD_DST_MAC) {
377 ether_addr_copy(list[i].h_u.eth_hdr.dst_addr,
378 l2_key->dst_mac);
379 ether_addr_copy(list[i].m_u.eth_hdr.dst_addr,
380 l2_mask->dst_mac);
381 }
382 if (flags & ICE_TC_FLWR_FIELD_SRC_MAC) {
383 ether_addr_copy(list[i].h_u.eth_hdr.src_addr,
384 l2_key->src_mac);
385 ether_addr_copy(list[i].m_u.eth_hdr.src_addr,
386 l2_mask->src_mac);
387 }
388 i++;
389 }
390
391 /* copy VLAN info */
392 if (flags & (ICE_TC_FLWR_FIELD_VLAN | ICE_TC_FLWR_FIELD_VLAN_PRIO)) {
393 vlan_tpid = be16_to_cpu(headers->vlan_hdr.vlan_tpid);
394 rule_info->vlan_type =
395 ice_check_supported_vlan_tpid(vlan_tpid);
396
397 if (flags & ICE_TC_FLWR_FIELD_CVLAN)
398 list[i].type = ICE_VLAN_EX;
399 else
400 list[i].type = ICE_VLAN_OFOS;
401
402 if (flags & ICE_TC_FLWR_FIELD_VLAN) {
403 list[i].h_u.vlan_hdr.vlan = headers->vlan_hdr.vlan_id;
404 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0x0FFF);
405 }
406
407 if (flags & ICE_TC_FLWR_FIELD_VLAN_PRIO) {
408 if (flags & ICE_TC_FLWR_FIELD_VLAN) {
409 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xEFFF);
410 } else {
411 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xE000);
412 list[i].h_u.vlan_hdr.vlan = 0;
413 }
414 list[i].h_u.vlan_hdr.vlan |=
415 headers->vlan_hdr.vlan_prio;
416 }
417
418 i++;
419 }
420
421 if (flags & (ICE_TC_FLWR_FIELD_CVLAN | ICE_TC_FLWR_FIELD_CVLAN_PRIO)) {
422 list[i].type = ICE_VLAN_IN;
423
424 if (flags & ICE_TC_FLWR_FIELD_CVLAN) {
425 list[i].h_u.vlan_hdr.vlan = headers->cvlan_hdr.vlan_id;
426 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0x0FFF);
427 }
428
429 if (flags & ICE_TC_FLWR_FIELD_CVLAN_PRIO) {
430 if (flags & ICE_TC_FLWR_FIELD_CVLAN) {
431 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xEFFF);
432 } else {
433 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xE000);
434 list[i].h_u.vlan_hdr.vlan = 0;
435 }
436 list[i].h_u.vlan_hdr.vlan |=
437 headers->cvlan_hdr.vlan_prio;
438 }
439
440 i++;
441 }
442
443 if (flags & (ICE_TC_FLWR_FIELD_PPPOE_SESSID |
444 ICE_TC_FLWR_FIELD_PPP_PROTO)) {
445 struct ice_pppoe_hdr *vals, *masks;
446
447 vals = &list[i].h_u.pppoe_hdr;
448 masks = &list[i].m_u.pppoe_hdr;
449
450 list[i].type = ICE_PPPOE;
451
452 if (flags & ICE_TC_FLWR_FIELD_PPPOE_SESSID) {
453 vals->session_id = headers->pppoe_hdr.session_id;
454 masks->session_id = cpu_to_be16(0xFFFF);
455 }
456
457 if (flags & ICE_TC_FLWR_FIELD_PPP_PROTO) {
458 vals->ppp_prot_id = headers->pppoe_hdr.ppp_proto;
459 masks->ppp_prot_id = cpu_to_be16(0xFFFF);
460 }
461
462 i++;
463 }
464
465 /* copy L3 (IPv[4|6]: src, dest) address */
466 if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 |
467 ICE_TC_FLWR_FIELD_SRC_IPV4)) {
468 struct ice_tc_l3_hdr *l3_key, *l3_mask;
469
470 list[i].type = ice_proto_type_from_ipv4(inner);
471 l3_key = &headers->l3_key;
472 l3_mask = &headers->l3_mask;
473 if (flags & ICE_TC_FLWR_FIELD_DEST_IPV4) {
474 list[i].h_u.ipv4_hdr.dst_addr = l3_key->dst_ipv4;
475 list[i].m_u.ipv4_hdr.dst_addr = l3_mask->dst_ipv4;
476 }
477 if (flags & ICE_TC_FLWR_FIELD_SRC_IPV4) {
478 list[i].h_u.ipv4_hdr.src_addr = l3_key->src_ipv4;
479 list[i].m_u.ipv4_hdr.src_addr = l3_mask->src_ipv4;
480 }
481 i++;
482 } else if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV6 |
483 ICE_TC_FLWR_FIELD_SRC_IPV6)) {
484 struct ice_ipv6_hdr *ipv6_hdr, *ipv6_mask;
485 struct ice_tc_l3_hdr *l3_key, *l3_mask;
486
487 list[i].type = ice_proto_type_from_ipv6(inner);
488 ipv6_hdr = &list[i].h_u.ipv6_hdr;
489 ipv6_mask = &list[i].m_u.ipv6_hdr;
490 l3_key = &headers->l3_key;
491 l3_mask = &headers->l3_mask;
492
493 if (flags & ICE_TC_FLWR_FIELD_DEST_IPV6) {
494 memcpy(&ipv6_hdr->dst_addr, &l3_key->dst_ipv6_addr,
495 sizeof(l3_key->dst_ipv6_addr));
496 memcpy(&ipv6_mask->dst_addr, &l3_mask->dst_ipv6_addr,
497 sizeof(l3_mask->dst_ipv6_addr));
498 }
499 if (flags & ICE_TC_FLWR_FIELD_SRC_IPV6) {
500 memcpy(&ipv6_hdr->src_addr, &l3_key->src_ipv6_addr,
501 sizeof(l3_key->src_ipv6_addr));
502 memcpy(&ipv6_mask->src_addr, &l3_mask->src_ipv6_addr,
503 sizeof(l3_mask->src_ipv6_addr));
504 }
505 i++;
506 }
507
508 if (headers->l2_key.n_proto == htons(ETH_P_IP) &&
509 (flags & (ICE_TC_FLWR_FIELD_IP_TOS | ICE_TC_FLWR_FIELD_IP_TTL))) {
510 list[i].type = ice_proto_type_from_ipv4(inner);
511
512 if (flags & ICE_TC_FLWR_FIELD_IP_TOS) {
513 list[i].h_u.ipv4_hdr.tos = headers->l3_key.tos;
514 list[i].m_u.ipv4_hdr.tos = headers->l3_mask.tos;
515 }
516
517 if (flags & ICE_TC_FLWR_FIELD_IP_TTL) {
518 list[i].h_u.ipv4_hdr.time_to_live =
519 headers->l3_key.ttl;
520 list[i].m_u.ipv4_hdr.time_to_live =
521 headers->l3_mask.ttl;
522 }
523
524 i++;
525 }
526
527 if (headers->l2_key.n_proto == htons(ETH_P_IPV6) &&
528 (flags & (ICE_TC_FLWR_FIELD_IP_TOS | ICE_TC_FLWR_FIELD_IP_TTL))) {
529 struct ice_ipv6_hdr *hdr_h, *hdr_m;
530
531 hdr_h = &list[i].h_u.ipv6_hdr;
532 hdr_m = &list[i].m_u.ipv6_hdr;
533 list[i].type = ice_proto_type_from_ipv6(inner);
534
535 if (flags & ICE_TC_FLWR_FIELD_IP_TOS) {
536 be32p_replace_bits(&hdr_h->be_ver_tc_flow,
537 headers->l3_key.tos,
538 ICE_IPV6_HDR_TC_MASK);
539 be32p_replace_bits(&hdr_m->be_ver_tc_flow,
540 headers->l3_mask.tos,
541 ICE_IPV6_HDR_TC_MASK);
542 }
543
544 if (flags & ICE_TC_FLWR_FIELD_IP_TTL) {
545 hdr_h->hop_limit = headers->l3_key.ttl;
546 hdr_m->hop_limit = headers->l3_mask.ttl;
547 }
548
549 i++;
550 }
551
552 if (flags & ICE_TC_FLWR_FIELD_L2TPV3_SESSID) {
553 list[i].type = ICE_L2TPV3;
554
555 list[i].h_u.l2tpv3_sess_hdr.session_id =
556 headers->l2tpv3_hdr.session_id;
557 list[i].m_u.l2tpv3_sess_hdr.session_id =
558 cpu_to_be32(0xFFFFFFFF);
559
560 i++;
561 }
562
563 /* copy L4 (src, dest) port */
564 if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT |
565 ICE_TC_FLWR_FIELD_SRC_L4_PORT)) {
566 struct ice_tc_l4_hdr *l4_key, *l4_mask;
567
568 list[i].type = ice_proto_type_from_l4_port(headers->l3_key.ip_proto);
569 l4_key = &headers->l4_key;
570 l4_mask = &headers->l4_mask;
571
572 if (flags & ICE_TC_FLWR_FIELD_DEST_L4_PORT) {
573 list[i].h_u.l4_hdr.dst_port = l4_key->dst_port;
574 list[i].m_u.l4_hdr.dst_port = l4_mask->dst_port;
575 }
576 if (flags & ICE_TC_FLWR_FIELD_SRC_L4_PORT) {
577 list[i].h_u.l4_hdr.src_port = l4_key->src_port;
578 list[i].m_u.l4_hdr.src_port = l4_mask->src_port;
579 }
580 i++;
581 }
582
583 return i;
584}
585
586/**
587 * ice_tc_tun_get_type - get the tunnel type
588 * @tunnel_dev: ptr to tunnel device
589 *
590 * This function detects appropriate tunnel_type if specified device is
591 * tunnel device such as VXLAN/Geneve
592 */
593static int ice_tc_tun_get_type(struct net_device *tunnel_dev)
594{
595 if (netif_is_vxlan(tunnel_dev))
596 return TNL_VXLAN;
597 if (netif_is_geneve(tunnel_dev))
598 return TNL_GENEVE;
599 if (netif_is_gretap(tunnel_dev) ||
600 netif_is_ip6gretap(tunnel_dev))
601 return TNL_GRETAP;
602
603 /* Assume GTP-U by default in case of GTP netdev.
604 * GTP-C may be selected later, based on enc_dst_port.
605 */
606 if (netif_is_gtp(tunnel_dev))
607 return TNL_GTPU;
608 return TNL_LAST;
609}
610
611bool ice_is_tunnel_supported(struct net_device *dev)
612{
613 return ice_tc_tun_get_type(dev) != TNL_LAST;
614}
615
616static int
617ice_eswitch_tc_parse_action(struct ice_tc_flower_fltr *fltr,
618 struct flow_action_entry *act)
619{
620 struct ice_repr *repr;
621
622 switch (act->id) {
623 case FLOW_ACTION_DROP:
624 fltr->action.fltr_act = ICE_DROP_PACKET;
625 break;
626
627 case FLOW_ACTION_REDIRECT:
628 fltr->action.fltr_act = ICE_FWD_TO_VSI;
629
630 if (ice_is_port_repr_netdev(act->dev)) {
631 repr = ice_netdev_to_repr(act->dev);
632
633 fltr->dest_vsi = repr->src_vsi;
634 fltr->direction = ICE_ESWITCH_FLTR_INGRESS;
635 } else if (netif_is_ice(act->dev) ||
636 ice_is_tunnel_supported(act->dev)) {
637 fltr->direction = ICE_ESWITCH_FLTR_EGRESS;
638 } else {
639 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported netdevice in switchdev mode");
640 return -EINVAL;
641 }
642
643 break;
644
645 default:
646 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action in switchdev mode");
647 return -EINVAL;
648 }
649
650 return 0;
651}
652
653static int
654ice_eswitch_add_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
655{
656 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers;
657 struct ice_adv_rule_info rule_info = { 0 };
658 struct ice_rule_query_data rule_added;
659 struct ice_hw *hw = &vsi->back->hw;
660 struct ice_adv_lkup_elem *list;
661 u32 flags = fltr->flags;
662 int lkups_cnt;
663 int ret;
664 int i;
665
666 if (!flags || (flags & ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT)) {
667 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported encap field(s)");
668 return -EOPNOTSUPP;
669 }
670
671 lkups_cnt = ice_tc_count_lkups(flags, headers, fltr);
672 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC);
673 if (!list)
674 return -ENOMEM;
675
676 i = ice_tc_fill_rules(hw, flags, fltr, list, &rule_info, NULL);
677 if (i != lkups_cnt) {
678 ret = -EINVAL;
679 goto exit;
680 }
681
682 /* egress traffic is always redirect to uplink */
683 if (fltr->direction == ICE_ESWITCH_FLTR_EGRESS)
684 fltr->dest_vsi = vsi->back->switchdev.uplink_vsi;
685
686 rule_info.sw_act.fltr_act = fltr->action.fltr_act;
687 if (fltr->action.fltr_act != ICE_DROP_PACKET)
688 rule_info.sw_act.vsi_handle = fltr->dest_vsi->idx;
689 /* For now, making priority to be highest, and it also becomes
690 * the priority for recipe which will get created as a result of
691 * new extraction sequence based on input set.
692 * Priority '7' is max val for switch recipe, higher the number
693 * results into order of switch rule evaluation.
694 */
695 rule_info.priority = 7;
696
697 if (fltr->direction == ICE_ESWITCH_FLTR_INGRESS) {
698 rule_info.sw_act.flag |= ICE_FLTR_RX;
699 rule_info.sw_act.src = hw->pf_id;
700 rule_info.rx = true;
701 } else {
702 rule_info.sw_act.flag |= ICE_FLTR_TX;
703 rule_info.sw_act.src = vsi->idx;
704 rule_info.rx = false;
705 rule_info.flags_info.act = ICE_SINGLE_ACT_LAN_ENABLE;
706 rule_info.flags_info.act_valid = true;
707 }
708
709 /* specify the cookie as filter_rule_id */
710 rule_info.fltr_rule_id = fltr->cookie;
711
712 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added);
713 if (ret == -EEXIST) {
714 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because it already exist");
715 ret = -EINVAL;
716 goto exit;
717 } else if (ret) {
718 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter due to error");
719 goto exit;
720 }
721
722 /* store the output params, which are needed later for removing
723 * advanced switch filter
724 */
725 fltr->rid = rule_added.rid;
726 fltr->rule_id = rule_added.rule_id;
727 fltr->dest_vsi_handle = rule_added.vsi_handle;
728
729exit:
730 kfree(list);
731 return ret;
732}
733
734/**
735 * ice_locate_vsi_using_queue - locate VSI using queue (forward to queue action)
736 * @vsi: Pointer to VSI
737 * @tc_fltr: Pointer to tc_flower_filter
738 *
739 * Locate the VSI using specified queue. When ADQ is not enabled, always
740 * return input VSI, otherwise locate corresponding VSI based on per channel
741 * offset and qcount
742 */
743static struct ice_vsi *
744ice_locate_vsi_using_queue(struct ice_vsi *vsi,
745 struct ice_tc_flower_fltr *tc_fltr)
746{
747 int num_tc, tc, queue;
748
749 /* if ADQ is not active, passed VSI is the candidate VSI */
750 if (!ice_is_adq_active(vsi->back))
751 return vsi;
752
753 /* Locate the VSI (it could still be main PF VSI or CHNL_VSI depending
754 * upon queue number)
755 */
756 num_tc = vsi->mqprio_qopt.qopt.num_tc;
757 queue = tc_fltr->action.fwd.q.queue;
758
759 for (tc = 0; tc < num_tc; tc++) {
760 int qcount = vsi->mqprio_qopt.qopt.count[tc];
761 int offset = vsi->mqprio_qopt.qopt.offset[tc];
762
763 if (queue >= offset && queue < offset + qcount) {
764 /* for non-ADQ TCs, passed VSI is the candidate VSI */
765 if (tc < ICE_CHNL_START_TC)
766 return vsi;
767 else
768 return vsi->tc_map_vsi[tc];
769 }
770 }
771 return NULL;
772}
773
774static struct ice_rx_ring *
775ice_locate_rx_ring_using_queue(struct ice_vsi *vsi,
776 struct ice_tc_flower_fltr *tc_fltr)
777{
778 u16 queue = tc_fltr->action.fwd.q.queue;
779
780 return queue < vsi->num_rxq ? vsi->rx_rings[queue] : NULL;
781}
782
783/**
784 * ice_tc_forward_action - Determine destination VSI and queue for the action
785 * @vsi: Pointer to VSI
786 * @tc_fltr: Pointer to TC flower filter structure
787 *
788 * Validates the tc forward action and determines the destination VSI and queue
789 * for the forward action.
790 */
791static struct ice_vsi *
792ice_tc_forward_action(struct ice_vsi *vsi, struct ice_tc_flower_fltr *tc_fltr)
793{
794 struct ice_rx_ring *ring = NULL;
795 struct ice_vsi *ch_vsi = NULL;
796 struct ice_pf *pf = vsi->back;
797 struct device *dev;
798 u32 tc_class;
799
800 dev = ice_pf_to_dev(pf);
801
802 /* Get the destination VSI and/or destination queue and validate them */
803 switch (tc_fltr->action.fltr_act) {
804 case ICE_FWD_TO_VSI:
805 tc_class = tc_fltr->action.fwd.tc.tc_class;
806 /* Select the destination VSI */
807 if (tc_class < ICE_CHNL_START_TC) {
808 NL_SET_ERR_MSG_MOD(tc_fltr->extack,
809 "Unable to add filter because of unsupported destination");
810 return ERR_PTR(-EOPNOTSUPP);
811 }
812 /* Locate ADQ VSI depending on hw_tc number */
813 ch_vsi = vsi->tc_map_vsi[tc_class];
814 break;
815 case ICE_FWD_TO_Q:
816 /* Locate the Rx queue */
817 ring = ice_locate_rx_ring_using_queue(vsi, tc_fltr);
818 if (!ring) {
819 dev_err(dev,
820 "Unable to locate Rx queue for action fwd_to_queue: %u\n",
821 tc_fltr->action.fwd.q.queue);
822 return ERR_PTR(-EINVAL);
823 }
824 /* Determine destination VSI even though the action is
825 * FWD_TO_QUEUE, because QUEUE is associated with VSI
826 */
827 ch_vsi = tc_fltr->dest_vsi;
828 break;
829 default:
830 dev_err(dev,
831 "Unable to add filter because of unsupported action %u (supported actions: fwd to tc, fwd to queue)\n",
832 tc_fltr->action.fltr_act);
833 return ERR_PTR(-EINVAL);
834 }
835 /* Must have valid ch_vsi (it could be main VSI or ADQ VSI) */
836 if (!ch_vsi) {
837 dev_err(dev,
838 "Unable to add filter because specified destination VSI doesn't exist\n");
839 return ERR_PTR(-EINVAL);
840 }
841 return ch_vsi;
842}
843
844/**
845 * ice_add_tc_flower_adv_fltr - add appropriate filter rules
846 * @vsi: Pointer to VSI
847 * @tc_fltr: Pointer to TC flower filter structure
848 *
849 * based on filter parameters using Advance recipes supported
850 * by OS package.
851 */
852static int
853ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi,
854 struct ice_tc_flower_fltr *tc_fltr)
855{
856 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers;
857 struct ice_adv_rule_info rule_info = {0};
858 struct ice_rule_query_data rule_added;
859 struct ice_adv_lkup_elem *list;
860 struct ice_pf *pf = vsi->back;
861 struct ice_hw *hw = &pf->hw;
862 u32 flags = tc_fltr->flags;
863 struct ice_vsi *ch_vsi;
864 struct device *dev;
865 u16 lkups_cnt = 0;
866 u16 l4_proto = 0;
867 int ret = 0;
868 u16 i = 0;
869
870 dev = ice_pf_to_dev(pf);
871 if (ice_is_safe_mode(pf)) {
872 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because driver is in safe mode");
873 return -EOPNOTSUPP;
874 }
875
876 if (!flags || (flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 |
877 ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 |
878 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 |
879 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 |
880 ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT))) {
881 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unsupported encap field(s)");
882 return -EOPNOTSUPP;
883 }
884
885 /* validate forwarding action VSI and queue */
886 ch_vsi = ice_tc_forward_action(vsi, tc_fltr);
887 if (IS_ERR(ch_vsi))
888 return PTR_ERR(ch_vsi);
889
890 lkups_cnt = ice_tc_count_lkups(flags, headers, tc_fltr);
891 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC);
892 if (!list)
893 return -ENOMEM;
894
895 i = ice_tc_fill_rules(hw, flags, tc_fltr, list, &rule_info, &l4_proto);
896 if (i != lkups_cnt) {
897 ret = -EINVAL;
898 goto exit;
899 }
900
901 rule_info.sw_act.fltr_act = tc_fltr->action.fltr_act;
902 /* specify the cookie as filter_rule_id */
903 rule_info.fltr_rule_id = tc_fltr->cookie;
904
905 switch (tc_fltr->action.fltr_act) {
906 case ICE_FWD_TO_VSI:
907 rule_info.sw_act.vsi_handle = ch_vsi->idx;
908 rule_info.priority = ICE_SWITCH_FLTR_PRIO_VSI;
909 rule_info.sw_act.src = hw->pf_id;
910 rule_info.rx = true;
911 dev_dbg(dev, "add switch rule for TC:%u vsi_idx:%u, lkups_cnt:%u\n",
912 tc_fltr->action.fwd.tc.tc_class,
913 rule_info.sw_act.vsi_handle, lkups_cnt);
914 break;
915 case ICE_FWD_TO_Q:
916 /* HW queue number in global space */
917 rule_info.sw_act.fwd_id.q_id = tc_fltr->action.fwd.q.hw_queue;
918 rule_info.sw_act.vsi_handle = ch_vsi->idx;
919 rule_info.priority = ICE_SWITCH_FLTR_PRIO_QUEUE;
920 rule_info.sw_act.src = hw->pf_id;
921 rule_info.rx = true;
922 dev_dbg(dev, "add switch rule action to forward to queue:%u (HW queue %u), lkups_cnt:%u\n",
923 tc_fltr->action.fwd.q.queue,
924 tc_fltr->action.fwd.q.hw_queue, lkups_cnt);
925 break;
926 default:
927 rule_info.sw_act.flag |= ICE_FLTR_TX;
928 /* In case of Tx (LOOKUP_TX), src needs to be src VSI */
929 rule_info.sw_act.src = vsi->idx;
930 /* 'Rx' is false, direction of rule(LOOKUPTRX) */
931 rule_info.rx = false;
932 rule_info.priority = ICE_SWITCH_FLTR_PRIO_VSI;
933 break;
934 }
935
936 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added);
937 if (ret == -EEXIST) {
938 NL_SET_ERR_MSG_MOD(tc_fltr->extack,
939 "Unable to add filter because it already exist");
940 ret = -EINVAL;
941 goto exit;
942 } else if (ret) {
943 NL_SET_ERR_MSG_MOD(tc_fltr->extack,
944 "Unable to add filter due to error");
945 goto exit;
946 }
947
948 /* store the output params, which are needed later for removing
949 * advanced switch filter
950 */
951 tc_fltr->rid = rule_added.rid;
952 tc_fltr->rule_id = rule_added.rule_id;
953 tc_fltr->dest_vsi_handle = rule_added.vsi_handle;
954 if (tc_fltr->action.fltr_act == ICE_FWD_TO_VSI ||
955 tc_fltr->action.fltr_act == ICE_FWD_TO_Q) {
956 tc_fltr->dest_vsi = ch_vsi;
957 /* keep track of advanced switch filter for
958 * destination VSI
959 */
960 ch_vsi->num_chnl_fltr++;
961
962 /* keeps track of channel filters for PF VSI */
963 if (vsi->type == ICE_VSI_PF &&
964 (flags & (ICE_TC_FLWR_FIELD_DST_MAC |
965 ICE_TC_FLWR_FIELD_ENC_DST_MAC)))
966 pf->num_dmac_chnl_fltrs++;
967 }
968 switch (tc_fltr->action.fltr_act) {
969 case ICE_FWD_TO_VSI:
970 dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x), action is forward to TC %u, rid %u, rule_id %u, vsi_idx %u\n",
971 lkups_cnt, flags,
972 tc_fltr->action.fwd.tc.tc_class, rule_added.rid,
973 rule_added.rule_id, rule_added.vsi_handle);
974 break;
975 case ICE_FWD_TO_Q:
976 dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x), action is forward to queue: %u (HW queue %u) , rid %u, rule_id %u\n",
977 lkups_cnt, flags, tc_fltr->action.fwd.q.queue,
978 tc_fltr->action.fwd.q.hw_queue, rule_added.rid,
979 rule_added.rule_id);
980 break;
981 default:
982 break;
983 }
984exit:
985 kfree(list);
986 return ret;
987}
988
989/**
990 * ice_tc_set_pppoe - Parse PPPoE fields from TC flower filter
991 * @match: Pointer to flow match structure
992 * @fltr: Pointer to filter structure
993 * @headers: Pointer to outer header fields
994 * @returns PPP protocol used in filter (ppp_ses or ppp_disc)
995 */
996static u16
997ice_tc_set_pppoe(struct flow_match_pppoe *match,
998 struct ice_tc_flower_fltr *fltr,
999 struct ice_tc_flower_lyr_2_4_hdrs *headers)
1000{
1001 if (match->mask->session_id) {
1002 fltr->flags |= ICE_TC_FLWR_FIELD_PPPOE_SESSID;
1003 headers->pppoe_hdr.session_id = match->key->session_id;
1004 }
1005
1006 if (match->mask->ppp_proto) {
1007 fltr->flags |= ICE_TC_FLWR_FIELD_PPP_PROTO;
1008 headers->pppoe_hdr.ppp_proto = match->key->ppp_proto;
1009 }
1010
1011 return be16_to_cpu(match->key->type);
1012}
1013
1014/**
1015 * ice_tc_set_ipv4 - Parse IPv4 addresses from TC flower filter
1016 * @match: Pointer to flow match structure
1017 * @fltr: Pointer to filter structure
1018 * @headers: inner or outer header fields
1019 * @is_encap: set true for tunnel IPv4 address
1020 */
1021static int
1022ice_tc_set_ipv4(struct flow_match_ipv4_addrs *match,
1023 struct ice_tc_flower_fltr *fltr,
1024 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap)
1025{
1026 if (match->key->dst) {
1027 if (is_encap)
1028 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV4;
1029 else
1030 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV4;
1031 headers->l3_key.dst_ipv4 = match->key->dst;
1032 headers->l3_mask.dst_ipv4 = match->mask->dst;
1033 }
1034 if (match->key->src) {
1035 if (is_encap)
1036 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV4;
1037 else
1038 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV4;
1039 headers->l3_key.src_ipv4 = match->key->src;
1040 headers->l3_mask.src_ipv4 = match->mask->src;
1041 }
1042 return 0;
1043}
1044
1045/**
1046 * ice_tc_set_ipv6 - Parse IPv6 addresses from TC flower filter
1047 * @match: Pointer to flow match structure
1048 * @fltr: Pointer to filter structure
1049 * @headers: inner or outer header fields
1050 * @is_encap: set true for tunnel IPv6 address
1051 */
1052static int
1053ice_tc_set_ipv6(struct flow_match_ipv6_addrs *match,
1054 struct ice_tc_flower_fltr *fltr,
1055 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap)
1056{
1057 struct ice_tc_l3_hdr *l3_key, *l3_mask;
1058
1059 /* src and dest IPV6 address should not be LOOPBACK
1060 * (0:0:0:0:0:0:0:1), which can be represented as ::1
1061 */
1062 if (ipv6_addr_loopback(&match->key->dst) ||
1063 ipv6_addr_loopback(&match->key->src)) {
1064 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad IPv6, addr is LOOPBACK");
1065 return -EINVAL;
1066 }
1067 /* if src/dest IPv6 address is *,* error */
1068 if (ipv6_addr_any(&match->mask->dst) &&
1069 ipv6_addr_any(&match->mask->src)) {
1070 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad src/dest IPv6, addr is any");
1071 return -EINVAL;
1072 }
1073 if (!ipv6_addr_any(&match->mask->dst)) {
1074 if (is_encap)
1075 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV6;
1076 else
1077 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV6;
1078 }
1079 if (!ipv6_addr_any(&match->mask->src)) {
1080 if (is_encap)
1081 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV6;
1082 else
1083 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV6;
1084 }
1085
1086 l3_key = &headers->l3_key;
1087 l3_mask = &headers->l3_mask;
1088
1089 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 |
1090 ICE_TC_FLWR_FIELD_SRC_IPV6)) {
1091 memcpy(&l3_key->src_ipv6_addr, &match->key->src.s6_addr,
1092 sizeof(match->key->src.s6_addr));
1093 memcpy(&l3_mask->src_ipv6_addr, &match->mask->src.s6_addr,
1094 sizeof(match->mask->src.s6_addr));
1095 }
1096 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 |
1097 ICE_TC_FLWR_FIELD_DEST_IPV6)) {
1098 memcpy(&l3_key->dst_ipv6_addr, &match->key->dst.s6_addr,
1099 sizeof(match->key->dst.s6_addr));
1100 memcpy(&l3_mask->dst_ipv6_addr, &match->mask->dst.s6_addr,
1101 sizeof(match->mask->dst.s6_addr));
1102 }
1103
1104 return 0;
1105}
1106
1107/**
1108 * ice_tc_set_tos_ttl - Parse IP ToS/TTL from TC flower filter
1109 * @match: Pointer to flow match structure
1110 * @fltr: Pointer to filter structure
1111 * @headers: inner or outer header fields
1112 * @is_encap: set true for tunnel
1113 */
1114static void
1115ice_tc_set_tos_ttl(struct flow_match_ip *match,
1116 struct ice_tc_flower_fltr *fltr,
1117 struct ice_tc_flower_lyr_2_4_hdrs *headers,
1118 bool is_encap)
1119{
1120 if (match->mask->tos) {
1121 if (is_encap)
1122 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_IP_TOS;
1123 else
1124 fltr->flags |= ICE_TC_FLWR_FIELD_IP_TOS;
1125
1126 headers->l3_key.tos = match->key->tos;
1127 headers->l3_mask.tos = match->mask->tos;
1128 }
1129
1130 if (match->mask->ttl) {
1131 if (is_encap)
1132 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_IP_TTL;
1133 else
1134 fltr->flags |= ICE_TC_FLWR_FIELD_IP_TTL;
1135
1136 headers->l3_key.ttl = match->key->ttl;
1137 headers->l3_mask.ttl = match->mask->ttl;
1138 }
1139}
1140
1141/**
1142 * ice_tc_set_port - Parse ports from TC flower filter
1143 * @match: Flow match structure
1144 * @fltr: Pointer to filter structure
1145 * @headers: inner or outer header fields
1146 * @is_encap: set true for tunnel port
1147 */
1148static int
1149ice_tc_set_port(struct flow_match_ports match,
1150 struct ice_tc_flower_fltr *fltr,
1151 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap)
1152{
1153 if (match.key->dst) {
1154 if (is_encap)
1155 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT;
1156 else
1157 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_L4_PORT;
1158
1159 headers->l4_key.dst_port = match.key->dst;
1160 headers->l4_mask.dst_port = match.mask->dst;
1161 }
1162 if (match.key->src) {
1163 if (is_encap)
1164 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT;
1165 else
1166 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_L4_PORT;
1167
1168 headers->l4_key.src_port = match.key->src;
1169 headers->l4_mask.src_port = match.mask->src;
1170 }
1171 return 0;
1172}
1173
1174static struct net_device *
1175ice_get_tunnel_device(struct net_device *dev, struct flow_rule *rule)
1176{
1177 struct flow_action_entry *act;
1178 int i;
1179
1180 if (ice_is_tunnel_supported(dev))
1181 return dev;
1182
1183 flow_action_for_each(i, act, &rule->action) {
1184 if (act->id == FLOW_ACTION_REDIRECT &&
1185 ice_is_tunnel_supported(act->dev))
1186 return act->dev;
1187 }
1188
1189 return NULL;
1190}
1191
1192/**
1193 * ice_parse_gtp_type - Sets GTP tunnel type to GTP-U or GTP-C
1194 * @match: Flow match structure
1195 * @fltr: Pointer to filter structure
1196 *
1197 * GTP-C/GTP-U is selected based on destination port number (enc_dst_port).
1198 * Before calling this funtcion, fltr->tunnel_type should be set to TNL_GTPU,
1199 * therefore making GTP-U the default choice (when destination port number is
1200 * not specified).
1201 */
1202static int
1203ice_parse_gtp_type(struct flow_match_ports match,
1204 struct ice_tc_flower_fltr *fltr)
1205{
1206 u16 dst_port;
1207
1208 if (match.key->dst) {
1209 dst_port = be16_to_cpu(match.key->dst);
1210
1211 switch (dst_port) {
1212 case 2152:
1213 break;
1214 case 2123:
1215 fltr->tunnel_type = TNL_GTPC;
1216 break;
1217 default:
1218 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported GTP port number");
1219 return -EINVAL;
1220 }
1221 }
1222
1223 return 0;
1224}
1225
1226static int
1227ice_parse_tunnel_attr(struct net_device *dev, struct flow_rule *rule,
1228 struct ice_tc_flower_fltr *fltr)
1229{
1230 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers;
1231 struct flow_match_control enc_control;
1232
1233 fltr->tunnel_type = ice_tc_tun_get_type(dev);
1234 headers->l3_key.ip_proto = IPPROTO_UDP;
1235
1236 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
1237 struct flow_match_enc_keyid enc_keyid;
1238
1239 flow_rule_match_enc_keyid(rule, &enc_keyid);
1240
1241 if (!enc_keyid.mask->keyid ||
1242 enc_keyid.mask->keyid != cpu_to_be32(ICE_TC_FLOWER_MASK_32))
1243 return -EINVAL;
1244
1245 fltr->flags |= ICE_TC_FLWR_FIELD_TENANT_ID;
1246 fltr->tenant_id = enc_keyid.key->keyid;
1247 }
1248
1249 flow_rule_match_enc_control(rule, &enc_control);
1250
1251 if (enc_control.key->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1252 struct flow_match_ipv4_addrs match;
1253
1254 flow_rule_match_enc_ipv4_addrs(rule, &match);
1255 if (ice_tc_set_ipv4(&match, fltr, headers, true))
1256 return -EINVAL;
1257 } else if (enc_control.key->addr_type ==
1258 FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1259 struct flow_match_ipv6_addrs match;
1260
1261 flow_rule_match_enc_ipv6_addrs(rule, &match);
1262 if (ice_tc_set_ipv6(&match, fltr, headers, true))
1263 return -EINVAL;
1264 }
1265
1266 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) {
1267 struct flow_match_ip match;
1268
1269 flow_rule_match_enc_ip(rule, &match);
1270 ice_tc_set_tos_ttl(&match, fltr, headers, true);
1271 }
1272
1273 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS) &&
1274 fltr->tunnel_type != TNL_VXLAN && fltr->tunnel_type != TNL_GENEVE) {
1275 struct flow_match_ports match;
1276
1277 flow_rule_match_enc_ports(rule, &match);
1278
1279 if (fltr->tunnel_type != TNL_GTPU) {
1280 if (ice_tc_set_port(match, fltr, headers, true))
1281 return -EINVAL;
1282 } else {
1283 if (ice_parse_gtp_type(match, fltr))
1284 return -EINVAL;
1285 }
1286 }
1287
1288 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_OPTS)) {
1289 struct flow_match_enc_opts match;
1290
1291 flow_rule_match_enc_opts(rule, &match);
1292
1293 memcpy(&fltr->gtp_pdu_info_keys, &match.key->data[0],
1294 sizeof(struct gtp_pdu_session_info));
1295
1296 memcpy(&fltr->gtp_pdu_info_masks, &match.mask->data[0],
1297 sizeof(struct gtp_pdu_session_info));
1298
1299 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_OPTS;
1300 }
1301
1302 return 0;
1303}
1304
1305/**
1306 * ice_parse_cls_flower - Parse TC flower filters provided by kernel
1307 * @vsi: Pointer to the VSI
1308 * @filter_dev: Pointer to device on which filter is being added
1309 * @f: Pointer to struct flow_cls_offload
1310 * @fltr: Pointer to filter structure
1311 */
1312static int
1313ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi,
1314 struct flow_cls_offload *f,
1315 struct ice_tc_flower_fltr *fltr)
1316{
1317 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers;
1318 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
1319 u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0;
1320 struct flow_dissector *dissector;
1321 struct net_device *tunnel_dev;
1322
1323 dissector = rule->match.dissector;
1324
1325 if (dissector->used_keys &
1326 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
1327 BIT(FLOW_DISSECTOR_KEY_BASIC) |
1328 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
1329 BIT(FLOW_DISSECTOR_KEY_VLAN) |
1330 BIT(FLOW_DISSECTOR_KEY_CVLAN) |
1331 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
1332 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
1333 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
1334 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
1335 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
1336 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
1337 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
1338 BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) |
1339 BIT(FLOW_DISSECTOR_KEY_IP) |
1340 BIT(FLOW_DISSECTOR_KEY_ENC_IP) |
1341 BIT(FLOW_DISSECTOR_KEY_PORTS) |
1342 BIT(FLOW_DISSECTOR_KEY_PPPOE) |
1343 BIT(FLOW_DISSECTOR_KEY_L2TPV3))) {
1344 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported key used");
1345 return -EOPNOTSUPP;
1346 }
1347
1348 tunnel_dev = ice_get_tunnel_device(filter_dev, rule);
1349 if (tunnel_dev) {
1350 int err;
1351
1352 filter_dev = tunnel_dev;
1353
1354 err = ice_parse_tunnel_attr(filter_dev, rule, fltr);
1355 if (err) {
1356 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to parse TC flower tunnel attributes");
1357 return err;
1358 }
1359
1360 /* header pointers should point to the inner headers, outer
1361 * header were already set by ice_parse_tunnel_attr
1362 */
1363 headers = &fltr->inner_headers;
1364 } else if (dissector->used_keys &
1365 (BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
1366 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
1367 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
1368 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS))) {
1369 NL_SET_ERR_MSG_MOD(fltr->extack, "Tunnel key used, but device isn't a tunnel");
1370 return -EOPNOTSUPP;
1371 } else {
1372 fltr->tunnel_type = TNL_LAST;
1373 }
1374
1375 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
1376 struct flow_match_basic match;
1377
1378 flow_rule_match_basic(rule, &match);
1379
1380 n_proto_key = ntohs(match.key->n_proto);
1381 n_proto_mask = ntohs(match.mask->n_proto);
1382
1383 if (n_proto_key == ETH_P_ALL || n_proto_key == 0 ||
1384 fltr->tunnel_type == TNL_GTPU ||
1385 fltr->tunnel_type == TNL_GTPC) {
1386 n_proto_key = 0;
1387 n_proto_mask = 0;
1388 } else {
1389 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID;
1390 }
1391
1392 headers->l2_key.n_proto = cpu_to_be16(n_proto_key);
1393 headers->l2_mask.n_proto = cpu_to_be16(n_proto_mask);
1394 headers->l3_key.ip_proto = match.key->ip_proto;
1395 }
1396
1397 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
1398 struct flow_match_eth_addrs match;
1399
1400 flow_rule_match_eth_addrs(rule, &match);
1401
1402 if (!is_zero_ether_addr(match.key->dst)) {
1403 ether_addr_copy(headers->l2_key.dst_mac,
1404 match.key->dst);
1405 ether_addr_copy(headers->l2_mask.dst_mac,
1406 match.mask->dst);
1407 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC;
1408 }
1409
1410 if (!is_zero_ether_addr(match.key->src)) {
1411 ether_addr_copy(headers->l2_key.src_mac,
1412 match.key->src);
1413 ether_addr_copy(headers->l2_mask.src_mac,
1414 match.mask->src);
1415 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_MAC;
1416 }
1417 }
1418
1419 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) ||
1420 is_vlan_dev(filter_dev)) {
1421 struct flow_dissector_key_vlan mask;
1422 struct flow_dissector_key_vlan key;
1423 struct flow_match_vlan match;
1424
1425 if (is_vlan_dev(filter_dev)) {
1426 match.key = &key;
1427 match.key->vlan_id = vlan_dev_vlan_id(filter_dev);
1428 match.key->vlan_priority = 0;
1429 match.mask = &mask;
1430 memset(match.mask, 0xff, sizeof(*match.mask));
1431 match.mask->vlan_priority = 0;
1432 } else {
1433 flow_rule_match_vlan(rule, &match);
1434 }
1435
1436 if (match.mask->vlan_id) {
1437 if (match.mask->vlan_id == VLAN_VID_MASK) {
1438 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN;
1439 headers->vlan_hdr.vlan_id =
1440 cpu_to_be16(match.key->vlan_id &
1441 VLAN_VID_MASK);
1442 } else {
1443 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad VLAN mask");
1444 return -EINVAL;
1445 }
1446 }
1447
1448 if (match.mask->vlan_priority) {
1449 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN_PRIO;
1450 headers->vlan_hdr.vlan_prio =
1451 cpu_to_be16((match.key->vlan_priority <<
1452 VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK);
1453 }
1454
1455 if (match.mask->vlan_tpid)
1456 headers->vlan_hdr.vlan_tpid = match.key->vlan_tpid;
1457 }
1458
1459 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
1460 struct flow_match_vlan match;
1461
1462 if (!ice_is_dvm_ena(&vsi->back->hw)) {
1463 NL_SET_ERR_MSG_MOD(fltr->extack, "Double VLAN mode is not enabled");
1464 return -EINVAL;
1465 }
1466
1467 flow_rule_match_cvlan(rule, &match);
1468
1469 if (match.mask->vlan_id) {
1470 if (match.mask->vlan_id == VLAN_VID_MASK) {
1471 fltr->flags |= ICE_TC_FLWR_FIELD_CVLAN;
1472 headers->cvlan_hdr.vlan_id =
1473 cpu_to_be16(match.key->vlan_id &
1474 VLAN_VID_MASK);
1475 } else {
1476 NL_SET_ERR_MSG_MOD(fltr->extack,
1477 "Bad CVLAN mask");
1478 return -EINVAL;
1479 }
1480 }
1481
1482 if (match.mask->vlan_priority) {
1483 fltr->flags |= ICE_TC_FLWR_FIELD_CVLAN_PRIO;
1484 headers->cvlan_hdr.vlan_prio =
1485 cpu_to_be16((match.key->vlan_priority <<
1486 VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK);
1487 }
1488 }
1489
1490 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PPPOE)) {
1491 struct flow_match_pppoe match;
1492
1493 flow_rule_match_pppoe(rule, &match);
1494 n_proto_key = ice_tc_set_pppoe(&match, fltr, headers);
1495
1496 /* If ethertype equals ETH_P_PPP_SES, n_proto might be
1497 * overwritten by encapsulated protocol (ppp_proto field) or set
1498 * to 0. To correct this, flow_match_pppoe provides the type
1499 * field, which contains the actual ethertype (ETH_P_PPP_SES).
1500 */
1501 headers->l2_key.n_proto = cpu_to_be16(n_proto_key);
1502 headers->l2_mask.n_proto = cpu_to_be16(0xFFFF);
1503 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID;
1504 }
1505
1506 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
1507 struct flow_match_control match;
1508
1509 flow_rule_match_control(rule, &match);
1510
1511 addr_type = match.key->addr_type;
1512 }
1513
1514 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1515 struct flow_match_ipv4_addrs match;
1516
1517 flow_rule_match_ipv4_addrs(rule, &match);
1518 if (ice_tc_set_ipv4(&match, fltr, headers, false))
1519 return -EINVAL;
1520 }
1521
1522 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1523 struct flow_match_ipv6_addrs match;
1524
1525 flow_rule_match_ipv6_addrs(rule, &match);
1526 if (ice_tc_set_ipv6(&match, fltr, headers, false))
1527 return -EINVAL;
1528 }
1529
1530 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
1531 struct flow_match_ip match;
1532
1533 flow_rule_match_ip(rule, &match);
1534 ice_tc_set_tos_ttl(&match, fltr, headers, false);
1535 }
1536
1537 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_L2TPV3)) {
1538 struct flow_match_l2tpv3 match;
1539
1540 flow_rule_match_l2tpv3(rule, &match);
1541
1542 fltr->flags |= ICE_TC_FLWR_FIELD_L2TPV3_SESSID;
1543 headers->l2tpv3_hdr.session_id = match.key->session_id;
1544 }
1545
1546 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
1547 struct flow_match_ports match;
1548
1549 flow_rule_match_ports(rule, &match);
1550 if (ice_tc_set_port(match, fltr, headers, false))
1551 return -EINVAL;
1552 switch (headers->l3_key.ip_proto) {
1553 case IPPROTO_TCP:
1554 case IPPROTO_UDP:
1555 break;
1556 default:
1557 NL_SET_ERR_MSG_MOD(fltr->extack, "Only UDP and TCP transport are supported");
1558 return -EINVAL;
1559 }
1560 }
1561 return 0;
1562}
1563
1564/**
1565 * ice_add_switch_fltr - Add TC flower filters
1566 * @vsi: Pointer to VSI
1567 * @fltr: Pointer to struct ice_tc_flower_fltr
1568 *
1569 * Add filter in HW switch block
1570 */
1571static int
1572ice_add_switch_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
1573{
1574 if (fltr->action.fltr_act == ICE_FWD_TO_QGRP)
1575 return -EOPNOTSUPP;
1576
1577 if (ice_is_eswitch_mode_switchdev(vsi->back))
1578 return ice_eswitch_add_tc_fltr(vsi, fltr);
1579
1580 return ice_add_tc_flower_adv_fltr(vsi, fltr);
1581}
1582
1583/**
1584 * ice_prep_adq_filter - Prepare ADQ filter with the required additional headers
1585 * @vsi: Pointer to VSI
1586 * @fltr: Pointer to TC flower filter structure
1587 *
1588 * Prepare ADQ filter with the required additional header fields
1589 */
1590static int
1591ice_prep_adq_filter(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
1592{
1593 if ((fltr->flags & ICE_TC_FLWR_FIELD_TENANT_ID) &&
1594 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC |
1595 ICE_TC_FLWR_FIELD_SRC_MAC))) {
1596 NL_SET_ERR_MSG_MOD(fltr->extack,
1597 "Unable to add filter because filter using tunnel key and inner MAC is unsupported combination");
1598 return -EOPNOTSUPP;
1599 }
1600
1601 /* For ADQ, filter must include dest MAC address, otherwise unwanted
1602 * packets with unrelated MAC address get delivered to ADQ VSIs as long
1603 * as remaining filter criteria is satisfied such as dest IP address
1604 * and dest/src L4 port. Below code handles the following cases:
1605 * 1. For non-tunnel, if user specify MAC addresses, use them.
1606 * 2. For non-tunnel, if user didn't specify MAC address, add implicit
1607 * dest MAC to be lower netdev's active unicast MAC address
1608 * 3. For tunnel, as of now TC-filter through flower classifier doesn't
1609 * have provision for user to specify outer DMAC, hence driver to
1610 * implicitly add outer dest MAC to be lower netdev's active unicast
1611 * MAC address.
1612 */
1613 if (fltr->tunnel_type != TNL_LAST &&
1614 !(fltr->flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC))
1615 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DST_MAC;
1616
1617 if (fltr->tunnel_type == TNL_LAST &&
1618 !(fltr->flags & ICE_TC_FLWR_FIELD_DST_MAC))
1619 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC;
1620
1621 if (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC |
1622 ICE_TC_FLWR_FIELD_ENC_DST_MAC)) {
1623 ether_addr_copy(fltr->outer_headers.l2_key.dst_mac,
1624 vsi->netdev->dev_addr);
1625 eth_broadcast_addr(fltr->outer_headers.l2_mask.dst_mac);
1626 }
1627
1628 /* Make sure VLAN is already added to main VSI, before allowing ADQ to
1629 * add a VLAN based filter such as MAC + VLAN + L4 port.
1630 */
1631 if (fltr->flags & ICE_TC_FLWR_FIELD_VLAN) {
1632 u16 vlan_id = be16_to_cpu(fltr->outer_headers.vlan_hdr.vlan_id);
1633
1634 if (!ice_vlan_fltr_exist(&vsi->back->hw, vlan_id, vsi->idx)) {
1635 NL_SET_ERR_MSG_MOD(fltr->extack,
1636 "Unable to add filter because legacy VLAN filter for specified destination doesn't exist");
1637 return -EINVAL;
1638 }
1639 }
1640 return 0;
1641}
1642
1643/**
1644 * ice_handle_tclass_action - Support directing to a traffic class
1645 * @vsi: Pointer to VSI
1646 * @cls_flower: Pointer to TC flower offload structure
1647 * @fltr: Pointer to TC flower filter structure
1648 *
1649 * Support directing traffic to a traffic class/queue-set
1650 */
1651static int
1652ice_handle_tclass_action(struct ice_vsi *vsi,
1653 struct flow_cls_offload *cls_flower,
1654 struct ice_tc_flower_fltr *fltr)
1655{
1656 int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid);
1657
1658 /* user specified hw_tc (must be non-zero for ADQ TC), action is forward
1659 * to hw_tc (i.e. ADQ channel number)
1660 */
1661 if (tc < ICE_CHNL_START_TC) {
1662 NL_SET_ERR_MSG_MOD(fltr->extack,
1663 "Unable to add filter because of unsupported destination");
1664 return -EOPNOTSUPP;
1665 }
1666 if (!(vsi->all_enatc & BIT(tc))) {
1667 NL_SET_ERR_MSG_MOD(fltr->extack,
1668 "Unable to add filter because of non-existence destination");
1669 return -EINVAL;
1670 }
1671 fltr->action.fltr_act = ICE_FWD_TO_VSI;
1672 fltr->action.fwd.tc.tc_class = tc;
1673
1674 return ice_prep_adq_filter(vsi, fltr);
1675}
1676
1677static int
1678ice_tc_forward_to_queue(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr,
1679 struct flow_action_entry *act)
1680{
1681 struct ice_vsi *ch_vsi = NULL;
1682 u16 queue = act->rx_queue;
1683
1684 if (queue >= vsi->num_rxq) {
1685 NL_SET_ERR_MSG_MOD(fltr->extack,
1686 "Unable to add filter because specified queue is invalid");
1687 return -EINVAL;
1688 }
1689 fltr->action.fltr_act = ICE_FWD_TO_Q;
1690 fltr->action.fwd.q.queue = queue;
1691 /* determine corresponding HW queue */
1692 fltr->action.fwd.q.hw_queue = vsi->rxq_map[queue];
1693
1694 /* If ADQ is configured, and the queue belongs to ADQ VSI, then prepare
1695 * ADQ switch filter
1696 */
1697 ch_vsi = ice_locate_vsi_using_queue(vsi, fltr);
1698 if (!ch_vsi)
1699 return -EINVAL;
1700 fltr->dest_vsi = ch_vsi;
1701 if (!ice_is_chnl_fltr(fltr))
1702 return 0;
1703
1704 return ice_prep_adq_filter(vsi, fltr);
1705}
1706
1707static int
1708ice_tc_parse_action(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr,
1709 struct flow_action_entry *act)
1710{
1711 switch (act->id) {
1712 case FLOW_ACTION_RX_QUEUE_MAPPING:
1713 /* forward to queue */
1714 return ice_tc_forward_to_queue(vsi, fltr, act);
1715 default:
1716 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported TC action");
1717 return -EOPNOTSUPP;
1718 }
1719}
1720
1721/**
1722 * ice_parse_tc_flower_actions - Parse the actions for a TC filter
1723 * @vsi: Pointer to VSI
1724 * @cls_flower: Pointer to TC flower offload structure
1725 * @fltr: Pointer to TC flower filter structure
1726 *
1727 * Parse the actions for a TC filter
1728 */
1729static int
1730ice_parse_tc_flower_actions(struct ice_vsi *vsi,
1731 struct flow_cls_offload *cls_flower,
1732 struct ice_tc_flower_fltr *fltr)
1733{
1734 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower);
1735 struct flow_action *flow_action = &rule->action;
1736 struct flow_action_entry *act;
1737 int i, err;
1738
1739 if (cls_flower->classid)
1740 return ice_handle_tclass_action(vsi, cls_flower, fltr);
1741
1742 if (!flow_action_has_entries(flow_action))
1743 return -EINVAL;
1744
1745 flow_action_for_each(i, act, flow_action) {
1746 if (ice_is_eswitch_mode_switchdev(vsi->back))
1747 err = ice_eswitch_tc_parse_action(fltr, act);
1748 else
1749 err = ice_tc_parse_action(vsi, fltr, act);
1750 if (err)
1751 return err;
1752 continue;
1753 }
1754 return 0;
1755}
1756
1757/**
1758 * ice_del_tc_fltr - deletes a filter from HW table
1759 * @vsi: Pointer to VSI
1760 * @fltr: Pointer to struct ice_tc_flower_fltr
1761 *
1762 * This function deletes a filter from HW table and manages book-keeping
1763 */
1764static int ice_del_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
1765{
1766 struct ice_rule_query_data rule_rem;
1767 struct ice_pf *pf = vsi->back;
1768 int err;
1769
1770 rule_rem.rid = fltr->rid;
1771 rule_rem.rule_id = fltr->rule_id;
1772 rule_rem.vsi_handle = fltr->dest_vsi_handle;
1773 err = ice_rem_adv_rule_by_id(&pf->hw, &rule_rem);
1774 if (err) {
1775 if (err == -ENOENT) {
1776 NL_SET_ERR_MSG_MOD(fltr->extack, "Filter does not exist");
1777 return -ENOENT;
1778 }
1779 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to delete TC flower filter");
1780 return -EIO;
1781 }
1782
1783 /* update advanced switch filter count for destination
1784 * VSI if filter destination was VSI
1785 */
1786 if (fltr->dest_vsi) {
1787 if (fltr->dest_vsi->type == ICE_VSI_CHNL) {
1788 fltr->dest_vsi->num_chnl_fltr--;
1789
1790 /* keeps track of channel filters for PF VSI */
1791 if (vsi->type == ICE_VSI_PF &&
1792 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC |
1793 ICE_TC_FLWR_FIELD_ENC_DST_MAC)))
1794 pf->num_dmac_chnl_fltrs--;
1795 }
1796 }
1797 return 0;
1798}
1799
1800/**
1801 * ice_add_tc_fltr - adds a TC flower filter
1802 * @netdev: Pointer to netdev
1803 * @vsi: Pointer to VSI
1804 * @f: Pointer to flower offload structure
1805 * @__fltr: Pointer to struct ice_tc_flower_fltr
1806 *
1807 * This function parses TC-flower input fields, parses action,
1808 * and adds a filter.
1809 */
1810static int
1811ice_add_tc_fltr(struct net_device *netdev, struct ice_vsi *vsi,
1812 struct flow_cls_offload *f,
1813 struct ice_tc_flower_fltr **__fltr)
1814{
1815 struct ice_tc_flower_fltr *fltr;
1816 int err;
1817
1818 /* by default, set output to be INVALID */
1819 *__fltr = NULL;
1820
1821 fltr = kzalloc(sizeof(*fltr), GFP_KERNEL);
1822 if (!fltr)
1823 return -ENOMEM;
1824
1825 fltr->cookie = f->cookie;
1826 fltr->extack = f->common.extack;
1827 fltr->src_vsi = vsi;
1828 INIT_HLIST_NODE(&fltr->tc_flower_node);
1829
1830 err = ice_parse_cls_flower(netdev, vsi, f, fltr);
1831 if (err < 0)
1832 goto err;
1833
1834 err = ice_parse_tc_flower_actions(vsi, f, fltr);
1835 if (err < 0)
1836 goto err;
1837
1838 err = ice_add_switch_fltr(vsi, fltr);
1839 if (err < 0)
1840 goto err;
1841
1842 /* return the newly created filter */
1843 *__fltr = fltr;
1844
1845 return 0;
1846err:
1847 kfree(fltr);
1848 return err;
1849}
1850
1851/**
1852 * ice_find_tc_flower_fltr - Find the TC flower filter in the list
1853 * @pf: Pointer to PF
1854 * @cookie: filter specific cookie
1855 */
1856static struct ice_tc_flower_fltr *
1857ice_find_tc_flower_fltr(struct ice_pf *pf, unsigned long cookie)
1858{
1859 struct ice_tc_flower_fltr *fltr;
1860
1861 hlist_for_each_entry(fltr, &pf->tc_flower_fltr_list, tc_flower_node)
1862 if (cookie == fltr->cookie)
1863 return fltr;
1864
1865 return NULL;
1866}
1867
1868/**
1869 * ice_add_cls_flower - add TC flower filters
1870 * @netdev: Pointer to filter device
1871 * @vsi: Pointer to VSI
1872 * @cls_flower: Pointer to flower offload structure
1873 */
1874int
1875ice_add_cls_flower(struct net_device *netdev, struct ice_vsi *vsi,
1876 struct flow_cls_offload *cls_flower)
1877{
1878 struct netlink_ext_ack *extack = cls_flower->common.extack;
1879 struct net_device *vsi_netdev = vsi->netdev;
1880 struct ice_tc_flower_fltr *fltr;
1881 struct ice_pf *pf = vsi->back;
1882 int err;
1883
1884 if (ice_is_reset_in_progress(pf->state))
1885 return -EBUSY;
1886 if (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags))
1887 return -EINVAL;
1888
1889 if (ice_is_port_repr_netdev(netdev))
1890 vsi_netdev = netdev;
1891
1892 if (!(vsi_netdev->features & NETIF_F_HW_TC) &&
1893 !test_bit(ICE_FLAG_CLS_FLOWER, pf->flags)) {
1894 /* Based on TC indirect notifications from kernel, all ice
1895 * devices get an instance of rule from higher level device.
1896 * Avoid triggering explicit error in this case.
1897 */
1898 if (netdev == vsi_netdev)
1899 NL_SET_ERR_MSG_MOD(extack, "can't apply TC flower filters, turn ON hw-tc-offload and try again");
1900 return -EINVAL;
1901 }
1902
1903 /* avoid duplicate entries, if exists - return error */
1904 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie);
1905 if (fltr) {
1906 NL_SET_ERR_MSG_MOD(extack, "filter cookie already exists, ignoring");
1907 return -EEXIST;
1908 }
1909
1910 /* prep and add TC-flower filter in HW */
1911 err = ice_add_tc_fltr(netdev, vsi, cls_flower, &fltr);
1912 if (err)
1913 return err;
1914
1915 /* add filter into an ordered list */
1916 hlist_add_head(&fltr->tc_flower_node, &pf->tc_flower_fltr_list);
1917 return 0;
1918}
1919
1920/**
1921 * ice_del_cls_flower - delete TC flower filters
1922 * @vsi: Pointer to VSI
1923 * @cls_flower: Pointer to struct flow_cls_offload
1924 */
1925int
1926ice_del_cls_flower(struct ice_vsi *vsi, struct flow_cls_offload *cls_flower)
1927{
1928 struct ice_tc_flower_fltr *fltr;
1929 struct ice_pf *pf = vsi->back;
1930 int err;
1931
1932 /* find filter */
1933 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie);
1934 if (!fltr) {
1935 if (!test_bit(ICE_FLAG_TC_MQPRIO, pf->flags) &&
1936 hlist_empty(&pf->tc_flower_fltr_list))
1937 return 0;
1938
1939 NL_SET_ERR_MSG_MOD(cls_flower->common.extack, "failed to delete TC flower filter because unable to find it");
1940 return -EINVAL;
1941 }
1942
1943 fltr->extack = cls_flower->common.extack;
1944 /* delete filter from HW */
1945 err = ice_del_tc_fltr(vsi, fltr);
1946 if (err)
1947 return err;
1948
1949 /* delete filter from an ordered list */
1950 hlist_del(&fltr->tc_flower_node);
1951
1952 /* free the filter node */
1953 kfree(fltr);
1954
1955 return 0;
1956}
1957
1958/**
1959 * ice_replay_tc_fltrs - replay TC filters
1960 * @pf: pointer to PF struct
1961 */
1962void ice_replay_tc_fltrs(struct ice_pf *pf)
1963{
1964 struct ice_tc_flower_fltr *fltr;
1965 struct hlist_node *node;
1966
1967 hlist_for_each_entry_safe(fltr, node,
1968 &pf->tc_flower_fltr_list,
1969 tc_flower_node) {
1970 fltr->extack = NULL;
1971 ice_add_switch_fltr(fltr->src_vsi, fltr);
1972 }
1973}