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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#define ICE_TC_METADATA_LKUP_IDX 0
11
12/**
13 * ice_tc_count_lkups - determine lookup count for switch filter
14 * @flags: TC-flower flags
15 * @headers: Pointer to TC flower filter header structure
16 * @fltr: Pointer to outer TC filter structure
17 *
18 * Determine lookup count based on TC flower input for switch filter.
19 */
20static int
21ice_tc_count_lkups(u32 flags, struct ice_tc_flower_lyr_2_4_hdrs *headers,
22 struct ice_tc_flower_fltr *fltr)
23{
24 int lkups_cnt = 1; /* 0th lookup is metadata */
25
26 /* Always add metadata as the 0th lookup. Included elements:
27 * - Direction flag (always present)
28 * - ICE_TC_FLWR_FIELD_VLAN_TPID (present if specified)
29 * - Tunnel flag (present if tunnel)
30 */
31 if (fltr->direction == ICE_ESWITCH_FLTR_EGRESS)
32 lkups_cnt++;
33
34 if (flags & ICE_TC_FLWR_FIELD_TENANT_ID)
35 lkups_cnt++;
36
37 if (flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC)
38 lkups_cnt++;
39
40 if (flags & ICE_TC_FLWR_FIELD_GTP_OPTS)
41 lkups_cnt++;
42
43 if (flags & ICE_TC_FLWR_FIELD_PFCP_OPTS)
44 lkups_cnt++;
45
46 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 |
47 ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 |
48 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 |
49 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6))
50 lkups_cnt++;
51
52 if (flags & (ICE_TC_FLWR_FIELD_ENC_IP_TOS |
53 ICE_TC_FLWR_FIELD_ENC_IP_TTL))
54 lkups_cnt++;
55
56 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT)
57 lkups_cnt++;
58
59 if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID)
60 lkups_cnt++;
61
62 /* are MAC fields specified? */
63 if (flags & (ICE_TC_FLWR_FIELD_DST_MAC | ICE_TC_FLWR_FIELD_SRC_MAC))
64 lkups_cnt++;
65
66 /* is VLAN specified? */
67 if (flags & (ICE_TC_FLWR_FIELD_VLAN | ICE_TC_FLWR_FIELD_VLAN_PRIO))
68 lkups_cnt++;
69
70 /* is CVLAN specified? */
71 if (flags & (ICE_TC_FLWR_FIELD_CVLAN | ICE_TC_FLWR_FIELD_CVLAN_PRIO))
72 lkups_cnt++;
73
74 /* are PPPoE options specified? */
75 if (flags & (ICE_TC_FLWR_FIELD_PPPOE_SESSID |
76 ICE_TC_FLWR_FIELD_PPP_PROTO))
77 lkups_cnt++;
78
79 /* are IPv[4|6] fields specified? */
80 if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 | ICE_TC_FLWR_FIELD_SRC_IPV4 |
81 ICE_TC_FLWR_FIELD_DEST_IPV6 | ICE_TC_FLWR_FIELD_SRC_IPV6))
82 lkups_cnt++;
83
84 if (flags & (ICE_TC_FLWR_FIELD_IP_TOS | ICE_TC_FLWR_FIELD_IP_TTL))
85 lkups_cnt++;
86
87 /* are L2TPv3 options specified? */
88 if (flags & ICE_TC_FLWR_FIELD_L2TPV3_SESSID)
89 lkups_cnt++;
90
91 /* is L4 (TCP/UDP/any other L4 protocol fields) specified? */
92 if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT |
93 ICE_TC_FLWR_FIELD_SRC_L4_PORT))
94 lkups_cnt++;
95
96 return lkups_cnt;
97}
98
99static enum ice_protocol_type ice_proto_type_from_mac(bool inner)
100{
101 return inner ? ICE_MAC_IL : ICE_MAC_OFOS;
102}
103
104static enum ice_protocol_type ice_proto_type_from_etype(bool inner)
105{
106 return inner ? ICE_ETYPE_IL : ICE_ETYPE_OL;
107}
108
109static enum ice_protocol_type ice_proto_type_from_ipv4(bool inner)
110{
111 return inner ? ICE_IPV4_IL : ICE_IPV4_OFOS;
112}
113
114static enum ice_protocol_type ice_proto_type_from_ipv6(bool inner)
115{
116 return inner ? ICE_IPV6_IL : ICE_IPV6_OFOS;
117}
118
119static enum ice_protocol_type ice_proto_type_from_l4_port(u16 ip_proto)
120{
121 switch (ip_proto) {
122 case IPPROTO_TCP:
123 return ICE_TCP_IL;
124 case IPPROTO_UDP:
125 return ICE_UDP_ILOS;
126 }
127
128 return 0;
129}
130
131static enum ice_protocol_type
132ice_proto_type_from_tunnel(enum ice_tunnel_type type)
133{
134 switch (type) {
135 case TNL_VXLAN:
136 return ICE_VXLAN;
137 case TNL_GENEVE:
138 return ICE_GENEVE;
139 case TNL_GRETAP:
140 return ICE_NVGRE;
141 case TNL_GTPU:
142 /* NO_PAY profiles will not work with GTP-U */
143 return ICE_GTP;
144 case TNL_GTPC:
145 return ICE_GTP_NO_PAY;
146 case TNL_PFCP:
147 return ICE_PFCP;
148 default:
149 return 0;
150 }
151}
152
153static enum ice_sw_tunnel_type
154ice_sw_type_from_tunnel(enum ice_tunnel_type type)
155{
156 switch (type) {
157 case TNL_VXLAN:
158 return ICE_SW_TUN_VXLAN;
159 case TNL_GENEVE:
160 return ICE_SW_TUN_GENEVE;
161 case TNL_GRETAP:
162 return ICE_SW_TUN_NVGRE;
163 case TNL_GTPU:
164 return ICE_SW_TUN_GTPU;
165 case TNL_GTPC:
166 return ICE_SW_TUN_GTPC;
167 case TNL_PFCP:
168 return ICE_SW_TUN_PFCP;
169 default:
170 return ICE_NON_TUN;
171 }
172}
173
174static u16 ice_check_supported_vlan_tpid(u16 vlan_tpid)
175{
176 switch (vlan_tpid) {
177 case ETH_P_8021Q:
178 case ETH_P_8021AD:
179 case ETH_P_QINQ1:
180 return vlan_tpid;
181 default:
182 return 0;
183 }
184}
185
186static int
187ice_tc_fill_tunnel_outer(u32 flags, struct ice_tc_flower_fltr *fltr,
188 struct ice_adv_lkup_elem *list, int i)
189{
190 struct ice_tc_flower_lyr_2_4_hdrs *hdr = &fltr->outer_headers;
191
192 if (flags & ICE_TC_FLWR_FIELD_TENANT_ID) {
193 u32 tenant_id;
194
195 list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type);
196 switch (fltr->tunnel_type) {
197 case TNL_VXLAN:
198 case TNL_GENEVE:
199 tenant_id = be32_to_cpu(fltr->tenant_id) << 8;
200 list[i].h_u.tnl_hdr.vni = cpu_to_be32(tenant_id);
201 memcpy(&list[i].m_u.tnl_hdr.vni, "\xff\xff\xff\x00", 4);
202 i++;
203 break;
204 case TNL_GRETAP:
205 list[i].h_u.nvgre_hdr.tni_flow = fltr->tenant_id;
206 memcpy(&list[i].m_u.nvgre_hdr.tni_flow,
207 "\xff\xff\xff\xff", 4);
208 i++;
209 break;
210 case TNL_GTPC:
211 case TNL_GTPU:
212 list[i].h_u.gtp_hdr.teid = fltr->tenant_id;
213 memcpy(&list[i].m_u.gtp_hdr.teid,
214 "\xff\xff\xff\xff", 4);
215 i++;
216 break;
217 default:
218 break;
219 }
220 }
221
222 if (flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC) {
223 list[i].type = ice_proto_type_from_mac(false);
224 ether_addr_copy(list[i].h_u.eth_hdr.dst_addr,
225 hdr->l2_key.dst_mac);
226 ether_addr_copy(list[i].m_u.eth_hdr.dst_addr,
227 hdr->l2_mask.dst_mac);
228 i++;
229 }
230
231 if (flags & ICE_TC_FLWR_FIELD_GTP_OPTS) {
232 list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type);
233
234 if (fltr->gtp_pdu_info_masks.pdu_type) {
235 list[i].h_u.gtp_hdr.pdu_type =
236 fltr->gtp_pdu_info_keys.pdu_type << 4;
237 memcpy(&list[i].m_u.gtp_hdr.pdu_type, "\xf0", 1);
238 }
239
240 if (fltr->gtp_pdu_info_masks.qfi) {
241 list[i].h_u.gtp_hdr.qfi = fltr->gtp_pdu_info_keys.qfi;
242 memcpy(&list[i].m_u.gtp_hdr.qfi, "\x3f", 1);
243 }
244
245 i++;
246 }
247
248 if (flags & ICE_TC_FLWR_FIELD_PFCP_OPTS) {
249 struct ice_pfcp_hdr *hdr_h, *hdr_m;
250
251 hdr_h = &list[i].h_u.pfcp_hdr;
252 hdr_m = &list[i].m_u.pfcp_hdr;
253 list[i].type = ICE_PFCP;
254
255 hdr_h->flags = fltr->pfcp_meta_keys.type;
256 hdr_m->flags = fltr->pfcp_meta_masks.type & 0x01;
257
258 hdr_h->seid = fltr->pfcp_meta_keys.seid;
259 hdr_m->seid = fltr->pfcp_meta_masks.seid;
260
261 i++;
262 }
263
264 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 |
265 ICE_TC_FLWR_FIELD_ENC_DEST_IPV4)) {
266 list[i].type = ice_proto_type_from_ipv4(false);
267
268 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV4) {
269 list[i].h_u.ipv4_hdr.src_addr = hdr->l3_key.src_ipv4;
270 list[i].m_u.ipv4_hdr.src_addr = hdr->l3_mask.src_ipv4;
271 }
272 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV4) {
273 list[i].h_u.ipv4_hdr.dst_addr = hdr->l3_key.dst_ipv4;
274 list[i].m_u.ipv4_hdr.dst_addr = hdr->l3_mask.dst_ipv4;
275 }
276 i++;
277 }
278
279 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 |
280 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6)) {
281 list[i].type = ice_proto_type_from_ipv6(false);
282
283 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV6) {
284 memcpy(&list[i].h_u.ipv6_hdr.src_addr,
285 &hdr->l3_key.src_ipv6_addr,
286 sizeof(hdr->l3_key.src_ipv6_addr));
287 memcpy(&list[i].m_u.ipv6_hdr.src_addr,
288 &hdr->l3_mask.src_ipv6_addr,
289 sizeof(hdr->l3_mask.src_ipv6_addr));
290 }
291 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV6) {
292 memcpy(&list[i].h_u.ipv6_hdr.dst_addr,
293 &hdr->l3_key.dst_ipv6_addr,
294 sizeof(hdr->l3_key.dst_ipv6_addr));
295 memcpy(&list[i].m_u.ipv6_hdr.dst_addr,
296 &hdr->l3_mask.dst_ipv6_addr,
297 sizeof(hdr->l3_mask.dst_ipv6_addr));
298 }
299 i++;
300 }
301
302 if (fltr->inner_headers.l2_key.n_proto == htons(ETH_P_IP) &&
303 (flags & (ICE_TC_FLWR_FIELD_ENC_IP_TOS |
304 ICE_TC_FLWR_FIELD_ENC_IP_TTL))) {
305 list[i].type = ice_proto_type_from_ipv4(false);
306
307 if (flags & ICE_TC_FLWR_FIELD_ENC_IP_TOS) {
308 list[i].h_u.ipv4_hdr.tos = hdr->l3_key.tos;
309 list[i].m_u.ipv4_hdr.tos = hdr->l3_mask.tos;
310 }
311
312 if (flags & ICE_TC_FLWR_FIELD_ENC_IP_TTL) {
313 list[i].h_u.ipv4_hdr.time_to_live = hdr->l3_key.ttl;
314 list[i].m_u.ipv4_hdr.time_to_live = hdr->l3_mask.ttl;
315 }
316
317 i++;
318 }
319
320 if (fltr->inner_headers.l2_key.n_proto == htons(ETH_P_IPV6) &&
321 (flags & (ICE_TC_FLWR_FIELD_ENC_IP_TOS |
322 ICE_TC_FLWR_FIELD_ENC_IP_TTL))) {
323 struct ice_ipv6_hdr *hdr_h, *hdr_m;
324
325 hdr_h = &list[i].h_u.ipv6_hdr;
326 hdr_m = &list[i].m_u.ipv6_hdr;
327 list[i].type = ice_proto_type_from_ipv6(false);
328
329 if (flags & ICE_TC_FLWR_FIELD_ENC_IP_TOS) {
330 be32p_replace_bits(&hdr_h->be_ver_tc_flow,
331 hdr->l3_key.tos,
332 ICE_IPV6_HDR_TC_MASK);
333 be32p_replace_bits(&hdr_m->be_ver_tc_flow,
334 hdr->l3_mask.tos,
335 ICE_IPV6_HDR_TC_MASK);
336 }
337
338 if (flags & ICE_TC_FLWR_FIELD_ENC_IP_TTL) {
339 hdr_h->hop_limit = hdr->l3_key.ttl;
340 hdr_m->hop_limit = hdr->l3_mask.ttl;
341 }
342
343 i++;
344 }
345
346 if ((flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) &&
347 hdr->l3_key.ip_proto == IPPROTO_UDP) {
348 list[i].type = ICE_UDP_OF;
349 list[i].h_u.l4_hdr.dst_port = hdr->l4_key.dst_port;
350 list[i].m_u.l4_hdr.dst_port = hdr->l4_mask.dst_port;
351 i++;
352 }
353
354 /* always fill matching on tunneled packets in metadata */
355 ice_rule_add_tunnel_metadata(&list[ICE_TC_METADATA_LKUP_IDX]);
356
357 return i;
358}
359
360/**
361 * ice_tc_fill_rules - fill filter rules based on TC fltr
362 * @hw: pointer to HW structure
363 * @flags: tc flower field flags
364 * @tc_fltr: pointer to TC flower filter
365 * @list: list of advance rule elements
366 * @rule_info: pointer to information about rule
367 * @l4_proto: pointer to information such as L4 proto type
368 *
369 * Fill ice_adv_lkup_elem list based on TC flower flags and
370 * TC flower headers. This list should be used to add
371 * advance filter in hardware.
372 */
373static int
374ice_tc_fill_rules(struct ice_hw *hw, u32 flags,
375 struct ice_tc_flower_fltr *tc_fltr,
376 struct ice_adv_lkup_elem *list,
377 struct ice_adv_rule_info *rule_info,
378 u16 *l4_proto)
379{
380 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers;
381 bool inner = false;
382 u16 vlan_tpid = 0;
383 int i = 1; /* 0th lookup is metadata */
384
385 rule_info->vlan_type = vlan_tpid;
386
387 /* Always add direction metadata */
388 ice_rule_add_direction_metadata(&list[ICE_TC_METADATA_LKUP_IDX]);
389
390 if (tc_fltr->direction == ICE_ESWITCH_FLTR_EGRESS) {
391 ice_rule_add_src_vsi_metadata(&list[i]);
392 i++;
393 }
394
395 rule_info->tun_type = ice_sw_type_from_tunnel(tc_fltr->tunnel_type);
396 if (tc_fltr->tunnel_type != TNL_LAST) {
397 i = ice_tc_fill_tunnel_outer(flags, tc_fltr, list, i);
398
399 /* PFCP is considered non-tunneled - don't swap headers. */
400 if (tc_fltr->tunnel_type != TNL_PFCP) {
401 headers = &tc_fltr->inner_headers;
402 inner = true;
403 }
404 }
405
406 if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) {
407 list[i].type = ice_proto_type_from_etype(inner);
408 list[i].h_u.ethertype.ethtype_id = headers->l2_key.n_proto;
409 list[i].m_u.ethertype.ethtype_id = headers->l2_mask.n_proto;
410 i++;
411 }
412
413 if (flags & (ICE_TC_FLWR_FIELD_DST_MAC |
414 ICE_TC_FLWR_FIELD_SRC_MAC)) {
415 struct ice_tc_l2_hdr *l2_key, *l2_mask;
416
417 l2_key = &headers->l2_key;
418 l2_mask = &headers->l2_mask;
419
420 list[i].type = ice_proto_type_from_mac(inner);
421 if (flags & ICE_TC_FLWR_FIELD_DST_MAC) {
422 ether_addr_copy(list[i].h_u.eth_hdr.dst_addr,
423 l2_key->dst_mac);
424 ether_addr_copy(list[i].m_u.eth_hdr.dst_addr,
425 l2_mask->dst_mac);
426 }
427 if (flags & ICE_TC_FLWR_FIELD_SRC_MAC) {
428 ether_addr_copy(list[i].h_u.eth_hdr.src_addr,
429 l2_key->src_mac);
430 ether_addr_copy(list[i].m_u.eth_hdr.src_addr,
431 l2_mask->src_mac);
432 }
433 i++;
434 }
435
436 /* copy VLAN info */
437 if (flags & (ICE_TC_FLWR_FIELD_VLAN | ICE_TC_FLWR_FIELD_VLAN_PRIO)) {
438 if (flags & ICE_TC_FLWR_FIELD_CVLAN)
439 list[i].type = ICE_VLAN_EX;
440 else
441 list[i].type = ICE_VLAN_OFOS;
442
443 if (flags & ICE_TC_FLWR_FIELD_VLAN) {
444 list[i].h_u.vlan_hdr.vlan = headers->vlan_hdr.vlan_id;
445 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0x0FFF);
446 }
447
448 if (flags & ICE_TC_FLWR_FIELD_VLAN_PRIO) {
449 if (flags & ICE_TC_FLWR_FIELD_VLAN) {
450 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xEFFF);
451 } else {
452 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xE000);
453 list[i].h_u.vlan_hdr.vlan = 0;
454 }
455 list[i].h_u.vlan_hdr.vlan |=
456 headers->vlan_hdr.vlan_prio;
457 }
458
459 i++;
460 }
461
462 if (flags & ICE_TC_FLWR_FIELD_VLAN_TPID) {
463 vlan_tpid = be16_to_cpu(headers->vlan_hdr.vlan_tpid);
464 rule_info->vlan_type =
465 ice_check_supported_vlan_tpid(vlan_tpid);
466
467 ice_rule_add_vlan_metadata(&list[ICE_TC_METADATA_LKUP_IDX]);
468 }
469
470 if (flags & (ICE_TC_FLWR_FIELD_CVLAN | ICE_TC_FLWR_FIELD_CVLAN_PRIO)) {
471 list[i].type = ICE_VLAN_IN;
472
473 if (flags & ICE_TC_FLWR_FIELD_CVLAN) {
474 list[i].h_u.vlan_hdr.vlan = headers->cvlan_hdr.vlan_id;
475 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0x0FFF);
476 }
477
478 if (flags & ICE_TC_FLWR_FIELD_CVLAN_PRIO) {
479 if (flags & ICE_TC_FLWR_FIELD_CVLAN) {
480 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xEFFF);
481 } else {
482 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xE000);
483 list[i].h_u.vlan_hdr.vlan = 0;
484 }
485 list[i].h_u.vlan_hdr.vlan |=
486 headers->cvlan_hdr.vlan_prio;
487 }
488
489 i++;
490 }
491
492 if (flags & (ICE_TC_FLWR_FIELD_PPPOE_SESSID |
493 ICE_TC_FLWR_FIELD_PPP_PROTO)) {
494 struct ice_pppoe_hdr *vals, *masks;
495
496 vals = &list[i].h_u.pppoe_hdr;
497 masks = &list[i].m_u.pppoe_hdr;
498
499 list[i].type = ICE_PPPOE;
500
501 if (flags & ICE_TC_FLWR_FIELD_PPPOE_SESSID) {
502 vals->session_id = headers->pppoe_hdr.session_id;
503 masks->session_id = cpu_to_be16(0xFFFF);
504 }
505
506 if (flags & ICE_TC_FLWR_FIELD_PPP_PROTO) {
507 vals->ppp_prot_id = headers->pppoe_hdr.ppp_proto;
508 masks->ppp_prot_id = cpu_to_be16(0xFFFF);
509 }
510
511 i++;
512 }
513
514 /* copy L3 (IPv[4|6]: src, dest) address */
515 if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 |
516 ICE_TC_FLWR_FIELD_SRC_IPV4)) {
517 struct ice_tc_l3_hdr *l3_key, *l3_mask;
518
519 list[i].type = ice_proto_type_from_ipv4(inner);
520 l3_key = &headers->l3_key;
521 l3_mask = &headers->l3_mask;
522 if (flags & ICE_TC_FLWR_FIELD_DEST_IPV4) {
523 list[i].h_u.ipv4_hdr.dst_addr = l3_key->dst_ipv4;
524 list[i].m_u.ipv4_hdr.dst_addr = l3_mask->dst_ipv4;
525 }
526 if (flags & ICE_TC_FLWR_FIELD_SRC_IPV4) {
527 list[i].h_u.ipv4_hdr.src_addr = l3_key->src_ipv4;
528 list[i].m_u.ipv4_hdr.src_addr = l3_mask->src_ipv4;
529 }
530 i++;
531 } else if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV6 |
532 ICE_TC_FLWR_FIELD_SRC_IPV6)) {
533 struct ice_ipv6_hdr *ipv6_hdr, *ipv6_mask;
534 struct ice_tc_l3_hdr *l3_key, *l3_mask;
535
536 list[i].type = ice_proto_type_from_ipv6(inner);
537 ipv6_hdr = &list[i].h_u.ipv6_hdr;
538 ipv6_mask = &list[i].m_u.ipv6_hdr;
539 l3_key = &headers->l3_key;
540 l3_mask = &headers->l3_mask;
541
542 if (flags & ICE_TC_FLWR_FIELD_DEST_IPV6) {
543 memcpy(&ipv6_hdr->dst_addr, &l3_key->dst_ipv6_addr,
544 sizeof(l3_key->dst_ipv6_addr));
545 memcpy(&ipv6_mask->dst_addr, &l3_mask->dst_ipv6_addr,
546 sizeof(l3_mask->dst_ipv6_addr));
547 }
548 if (flags & ICE_TC_FLWR_FIELD_SRC_IPV6) {
549 memcpy(&ipv6_hdr->src_addr, &l3_key->src_ipv6_addr,
550 sizeof(l3_key->src_ipv6_addr));
551 memcpy(&ipv6_mask->src_addr, &l3_mask->src_ipv6_addr,
552 sizeof(l3_mask->src_ipv6_addr));
553 }
554 i++;
555 }
556
557 if (headers->l2_key.n_proto == htons(ETH_P_IP) &&
558 (flags & (ICE_TC_FLWR_FIELD_IP_TOS | ICE_TC_FLWR_FIELD_IP_TTL))) {
559 list[i].type = ice_proto_type_from_ipv4(inner);
560
561 if (flags & ICE_TC_FLWR_FIELD_IP_TOS) {
562 list[i].h_u.ipv4_hdr.tos = headers->l3_key.tos;
563 list[i].m_u.ipv4_hdr.tos = headers->l3_mask.tos;
564 }
565
566 if (flags & ICE_TC_FLWR_FIELD_IP_TTL) {
567 list[i].h_u.ipv4_hdr.time_to_live =
568 headers->l3_key.ttl;
569 list[i].m_u.ipv4_hdr.time_to_live =
570 headers->l3_mask.ttl;
571 }
572
573 i++;
574 }
575
576 if (headers->l2_key.n_proto == htons(ETH_P_IPV6) &&
577 (flags & (ICE_TC_FLWR_FIELD_IP_TOS | ICE_TC_FLWR_FIELD_IP_TTL))) {
578 struct ice_ipv6_hdr *hdr_h, *hdr_m;
579
580 hdr_h = &list[i].h_u.ipv6_hdr;
581 hdr_m = &list[i].m_u.ipv6_hdr;
582 list[i].type = ice_proto_type_from_ipv6(inner);
583
584 if (flags & ICE_TC_FLWR_FIELD_IP_TOS) {
585 be32p_replace_bits(&hdr_h->be_ver_tc_flow,
586 headers->l3_key.tos,
587 ICE_IPV6_HDR_TC_MASK);
588 be32p_replace_bits(&hdr_m->be_ver_tc_flow,
589 headers->l3_mask.tos,
590 ICE_IPV6_HDR_TC_MASK);
591 }
592
593 if (flags & ICE_TC_FLWR_FIELD_IP_TTL) {
594 hdr_h->hop_limit = headers->l3_key.ttl;
595 hdr_m->hop_limit = headers->l3_mask.ttl;
596 }
597
598 i++;
599 }
600
601 if (flags & ICE_TC_FLWR_FIELD_L2TPV3_SESSID) {
602 list[i].type = ICE_L2TPV3;
603
604 list[i].h_u.l2tpv3_sess_hdr.session_id =
605 headers->l2tpv3_hdr.session_id;
606 list[i].m_u.l2tpv3_sess_hdr.session_id =
607 cpu_to_be32(0xFFFFFFFF);
608
609 i++;
610 }
611
612 /* copy L4 (src, dest) port */
613 if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT |
614 ICE_TC_FLWR_FIELD_SRC_L4_PORT)) {
615 struct ice_tc_l4_hdr *l4_key, *l4_mask;
616
617 list[i].type = ice_proto_type_from_l4_port(headers->l3_key.ip_proto);
618 l4_key = &headers->l4_key;
619 l4_mask = &headers->l4_mask;
620
621 if (flags & ICE_TC_FLWR_FIELD_DEST_L4_PORT) {
622 list[i].h_u.l4_hdr.dst_port = l4_key->dst_port;
623 list[i].m_u.l4_hdr.dst_port = l4_mask->dst_port;
624 }
625 if (flags & ICE_TC_FLWR_FIELD_SRC_L4_PORT) {
626 list[i].h_u.l4_hdr.src_port = l4_key->src_port;
627 list[i].m_u.l4_hdr.src_port = l4_mask->src_port;
628 }
629 i++;
630 }
631
632 return i;
633}
634
635/**
636 * ice_tc_tun_get_type - get the tunnel type
637 * @tunnel_dev: ptr to tunnel device
638 *
639 * This function detects appropriate tunnel_type if specified device is
640 * tunnel device such as VXLAN/Geneve
641 */
642static int ice_tc_tun_get_type(struct net_device *tunnel_dev)
643{
644 if (netif_is_vxlan(tunnel_dev))
645 return TNL_VXLAN;
646 if (netif_is_geneve(tunnel_dev))
647 return TNL_GENEVE;
648 if (netif_is_gretap(tunnel_dev) ||
649 netif_is_ip6gretap(tunnel_dev))
650 return TNL_GRETAP;
651
652 /* Assume GTP-U by default in case of GTP netdev.
653 * GTP-C may be selected later, based on enc_dst_port.
654 */
655 if (netif_is_gtp(tunnel_dev))
656 return TNL_GTPU;
657 if (netif_is_pfcp(tunnel_dev))
658 return TNL_PFCP;
659 return TNL_LAST;
660}
661
662bool ice_is_tunnel_supported(struct net_device *dev)
663{
664 return ice_tc_tun_get_type(dev) != TNL_LAST;
665}
666
667static bool ice_tc_is_dev_uplink(struct net_device *dev)
668{
669 return netif_is_ice(dev) || ice_is_tunnel_supported(dev);
670}
671
672static int ice_tc_setup_action(struct net_device *filter_dev,
673 struct ice_tc_flower_fltr *fltr,
674 struct net_device *target_dev,
675 enum ice_sw_fwd_act_type action)
676{
677 struct ice_repr *repr;
678
679 if (action != ICE_FWD_TO_VSI && action != ICE_MIRROR_PACKET) {
680 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action to setup provided");
681 return -EINVAL;
682 }
683
684 fltr->action.fltr_act = action;
685
686 if (ice_is_port_repr_netdev(filter_dev) &&
687 ice_is_port_repr_netdev(target_dev)) {
688 repr = ice_netdev_to_repr(target_dev);
689
690 fltr->dest_vsi = repr->src_vsi;
691 fltr->direction = ICE_ESWITCH_FLTR_EGRESS;
692 } else if (ice_is_port_repr_netdev(filter_dev) &&
693 ice_tc_is_dev_uplink(target_dev)) {
694 repr = ice_netdev_to_repr(filter_dev);
695
696 fltr->dest_vsi = repr->src_vsi->back->eswitch.uplink_vsi;
697 fltr->direction = ICE_ESWITCH_FLTR_EGRESS;
698 } else if (ice_tc_is_dev_uplink(filter_dev) &&
699 ice_is_port_repr_netdev(target_dev)) {
700 repr = ice_netdev_to_repr(target_dev);
701
702 fltr->dest_vsi = repr->src_vsi;
703 fltr->direction = ICE_ESWITCH_FLTR_INGRESS;
704 } else {
705 NL_SET_ERR_MSG_MOD(fltr->extack,
706 "Unsupported netdevice in switchdev mode");
707 return -EINVAL;
708 }
709
710 return 0;
711}
712
713static int
714ice_tc_setup_drop_action(struct net_device *filter_dev,
715 struct ice_tc_flower_fltr *fltr)
716{
717 fltr->action.fltr_act = ICE_DROP_PACKET;
718
719 if (ice_is_port_repr_netdev(filter_dev)) {
720 fltr->direction = ICE_ESWITCH_FLTR_EGRESS;
721 } else if (ice_tc_is_dev_uplink(filter_dev)) {
722 fltr->direction = ICE_ESWITCH_FLTR_INGRESS;
723 } else {
724 NL_SET_ERR_MSG_MOD(fltr->extack,
725 "Unsupported netdevice in switchdev mode");
726 return -EINVAL;
727 }
728
729 return 0;
730}
731
732static int ice_eswitch_tc_parse_action(struct net_device *filter_dev,
733 struct ice_tc_flower_fltr *fltr,
734 struct flow_action_entry *act)
735{
736 int err;
737
738 switch (act->id) {
739 case FLOW_ACTION_DROP:
740 err = ice_tc_setup_drop_action(filter_dev, fltr);
741 if (err)
742 return err;
743
744 break;
745
746 case FLOW_ACTION_REDIRECT:
747 err = ice_tc_setup_action(filter_dev, fltr,
748 act->dev, ICE_FWD_TO_VSI);
749 if (err)
750 return err;
751
752 break;
753
754 case FLOW_ACTION_MIRRED:
755 err = ice_tc_setup_action(filter_dev, fltr,
756 act->dev, ICE_MIRROR_PACKET);
757 if (err)
758 return err;
759
760 break;
761
762 default:
763 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action in switchdev mode");
764 return -EINVAL;
765 }
766
767 return 0;
768}
769
770static int
771ice_eswitch_add_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
772{
773 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers;
774 struct ice_adv_rule_info rule_info = { 0 };
775 struct ice_rule_query_data rule_added;
776 struct ice_hw *hw = &vsi->back->hw;
777 struct ice_adv_lkup_elem *list;
778 u32 flags = fltr->flags;
779 int lkups_cnt;
780 int ret;
781 int i;
782
783 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT) {
784 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported encap field(s)");
785 return -EOPNOTSUPP;
786 }
787
788 lkups_cnt = ice_tc_count_lkups(flags, headers, fltr);
789 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC);
790 if (!list)
791 return -ENOMEM;
792
793 i = ice_tc_fill_rules(hw, flags, fltr, list, &rule_info, NULL);
794 if (i != lkups_cnt) {
795 ret = -EINVAL;
796 goto exit;
797 }
798
799 rule_info.sw_act.fltr_act = fltr->action.fltr_act;
800 if (fltr->action.fltr_act != ICE_DROP_PACKET)
801 rule_info.sw_act.vsi_handle = fltr->dest_vsi->idx;
802 /* For now, making priority to be highest, and it also becomes
803 * the priority for recipe which will get created as a result of
804 * new extraction sequence based on input set.
805 * Priority '7' is max val for switch recipe, higher the number
806 * results into order of switch rule evaluation.
807 */
808 rule_info.priority = 7;
809 rule_info.flags_info.act_valid = true;
810
811 if (fltr->direction == ICE_ESWITCH_FLTR_INGRESS) {
812 /* Uplink to VF */
813 rule_info.sw_act.flag |= ICE_FLTR_RX;
814 rule_info.sw_act.src = hw->pf_id;
815 rule_info.flags_info.act = ICE_SINGLE_ACT_LB_ENABLE;
816 } else if (fltr->direction == ICE_ESWITCH_FLTR_EGRESS &&
817 fltr->dest_vsi == vsi->back->eswitch.uplink_vsi) {
818 /* VF to Uplink */
819 rule_info.sw_act.flag |= ICE_FLTR_TX;
820 rule_info.sw_act.src = vsi->idx;
821 rule_info.flags_info.act = ICE_SINGLE_ACT_LAN_ENABLE;
822 /* This is a specific case. The destination VSI index is
823 * overwritten by the source VSI index. This type of filter
824 * should allow the packet to go to the LAN, not to the
825 * VSI passed here. It should set LAN_EN bit only. However,
826 * the VSI must be a valid one. Setting source VSI index
827 * here is safe. Even if the result from switch is set LAN_EN
828 * and LB_EN (which normally will pass the packet to this VSI)
829 * packet won't be seen on the VSI, because local loopback is
830 * turned off.
831 */
832 rule_info.sw_act.vsi_handle = vsi->idx;
833 } else {
834 /* VF to VF */
835 rule_info.sw_act.flag |= ICE_FLTR_TX;
836 rule_info.sw_act.src = vsi->idx;
837 rule_info.flags_info.act = ICE_SINGLE_ACT_LB_ENABLE;
838 }
839
840 /* specify the cookie as filter_rule_id */
841 rule_info.fltr_rule_id = fltr->cookie;
842 rule_info.src_vsi = vsi->idx;
843
844 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added);
845 if (ret == -EEXIST) {
846 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because it already exist");
847 ret = -EINVAL;
848 goto exit;
849 } else if (ret) {
850 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter due to error");
851 goto exit;
852 }
853
854 /* store the output params, which are needed later for removing
855 * advanced switch filter
856 */
857 fltr->rid = rule_added.rid;
858 fltr->rule_id = rule_added.rule_id;
859 fltr->dest_vsi_handle = rule_added.vsi_handle;
860
861exit:
862 kfree(list);
863 return ret;
864}
865
866/**
867 * ice_locate_vsi_using_queue - locate VSI using queue (forward to queue action)
868 * @vsi: Pointer to VSI
869 * @queue: Queue index
870 *
871 * Locate the VSI using specified "queue". When ADQ is not enabled,
872 * always return input VSI, otherwise locate corresponding
873 * VSI based on per channel "offset" and "qcount"
874 */
875struct ice_vsi *
876ice_locate_vsi_using_queue(struct ice_vsi *vsi, int queue)
877{
878 int num_tc, tc;
879
880 /* if ADQ is not active, passed VSI is the candidate VSI */
881 if (!ice_is_adq_active(vsi->back))
882 return vsi;
883
884 /* Locate the VSI (it could still be main PF VSI or CHNL_VSI depending
885 * upon queue number)
886 */
887 num_tc = vsi->mqprio_qopt.qopt.num_tc;
888
889 for (tc = 0; tc < num_tc; tc++) {
890 int qcount = vsi->mqprio_qopt.qopt.count[tc];
891 int offset = vsi->mqprio_qopt.qopt.offset[tc];
892
893 if (queue >= offset && queue < offset + qcount) {
894 /* for non-ADQ TCs, passed VSI is the candidate VSI */
895 if (tc < ICE_CHNL_START_TC)
896 return vsi;
897 else
898 return vsi->tc_map_vsi[tc];
899 }
900 }
901 return NULL;
902}
903
904static struct ice_rx_ring *
905ice_locate_rx_ring_using_queue(struct ice_vsi *vsi,
906 struct ice_tc_flower_fltr *tc_fltr)
907{
908 u16 queue = tc_fltr->action.fwd.q.queue;
909
910 return queue < vsi->num_rxq ? vsi->rx_rings[queue] : NULL;
911}
912
913/**
914 * ice_tc_forward_action - Determine destination VSI and queue for the action
915 * @vsi: Pointer to VSI
916 * @tc_fltr: Pointer to TC flower filter structure
917 *
918 * Validates the tc forward action and determines the destination VSI and queue
919 * for the forward action.
920 */
921static struct ice_vsi *
922ice_tc_forward_action(struct ice_vsi *vsi, struct ice_tc_flower_fltr *tc_fltr)
923{
924 struct ice_rx_ring *ring = NULL;
925 struct ice_vsi *dest_vsi = NULL;
926 struct ice_pf *pf = vsi->back;
927 struct device *dev;
928 u32 tc_class;
929 int q;
930
931 dev = ice_pf_to_dev(pf);
932
933 /* Get the destination VSI and/or destination queue and validate them */
934 switch (tc_fltr->action.fltr_act) {
935 case ICE_FWD_TO_VSI:
936 tc_class = tc_fltr->action.fwd.tc.tc_class;
937 /* Select the destination VSI */
938 if (tc_class < ICE_CHNL_START_TC) {
939 NL_SET_ERR_MSG_MOD(tc_fltr->extack,
940 "Unable to add filter because of unsupported destination");
941 return ERR_PTR(-EOPNOTSUPP);
942 }
943 /* Locate ADQ VSI depending on hw_tc number */
944 dest_vsi = vsi->tc_map_vsi[tc_class];
945 break;
946 case ICE_FWD_TO_Q:
947 /* Locate the Rx queue */
948 ring = ice_locate_rx_ring_using_queue(vsi, tc_fltr);
949 if (!ring) {
950 dev_err(dev,
951 "Unable to locate Rx queue for action fwd_to_queue: %u\n",
952 tc_fltr->action.fwd.q.queue);
953 return ERR_PTR(-EINVAL);
954 }
955 /* Determine destination VSI even though the action is
956 * FWD_TO_QUEUE, because QUEUE is associated with VSI
957 */
958 q = tc_fltr->action.fwd.q.queue;
959 dest_vsi = ice_locate_vsi_using_queue(vsi, q);
960 break;
961 default:
962 dev_err(dev,
963 "Unable to add filter because of unsupported action %u (supported actions: fwd to tc, fwd to queue)\n",
964 tc_fltr->action.fltr_act);
965 return ERR_PTR(-EINVAL);
966 }
967 /* Must have valid dest_vsi (it could be main VSI or ADQ VSI) */
968 if (!dest_vsi) {
969 dev_err(dev,
970 "Unable to add filter because specified destination VSI doesn't exist\n");
971 return ERR_PTR(-EINVAL);
972 }
973 return dest_vsi;
974}
975
976/**
977 * ice_add_tc_flower_adv_fltr - add appropriate filter rules
978 * @vsi: Pointer to VSI
979 * @tc_fltr: Pointer to TC flower filter structure
980 *
981 * based on filter parameters using Advance recipes supported
982 * by OS package.
983 */
984static int
985ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi,
986 struct ice_tc_flower_fltr *tc_fltr)
987{
988 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers;
989 struct ice_adv_rule_info rule_info = {0};
990 struct ice_rule_query_data rule_added;
991 struct ice_adv_lkup_elem *list;
992 struct ice_pf *pf = vsi->back;
993 struct ice_hw *hw = &pf->hw;
994 u32 flags = tc_fltr->flags;
995 struct ice_vsi *dest_vsi;
996 struct device *dev;
997 u16 lkups_cnt = 0;
998 u16 l4_proto = 0;
999 int ret = 0;
1000 u16 i = 0;
1001
1002 dev = ice_pf_to_dev(pf);
1003 if (ice_is_safe_mode(pf)) {
1004 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because driver is in safe mode");
1005 return -EOPNOTSUPP;
1006 }
1007
1008 if (!flags || (flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 |
1009 ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 |
1010 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 |
1011 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 |
1012 ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT))) {
1013 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unsupported encap field(s)");
1014 return -EOPNOTSUPP;
1015 }
1016
1017 /* validate forwarding action VSI and queue */
1018 if (ice_is_forward_action(tc_fltr->action.fltr_act)) {
1019 dest_vsi = ice_tc_forward_action(vsi, tc_fltr);
1020 if (IS_ERR(dest_vsi))
1021 return PTR_ERR(dest_vsi);
1022 }
1023
1024 lkups_cnt = ice_tc_count_lkups(flags, headers, tc_fltr);
1025 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC);
1026 if (!list)
1027 return -ENOMEM;
1028
1029 i = ice_tc_fill_rules(hw, flags, tc_fltr, list, &rule_info, &l4_proto);
1030 if (i != lkups_cnt) {
1031 ret = -EINVAL;
1032 goto exit;
1033 }
1034
1035 rule_info.sw_act.fltr_act = tc_fltr->action.fltr_act;
1036 /* specify the cookie as filter_rule_id */
1037 rule_info.fltr_rule_id = tc_fltr->cookie;
1038
1039 switch (tc_fltr->action.fltr_act) {
1040 case ICE_FWD_TO_VSI:
1041 rule_info.sw_act.vsi_handle = dest_vsi->idx;
1042 rule_info.priority = ICE_SWITCH_FLTR_PRIO_VSI;
1043 rule_info.sw_act.src = hw->pf_id;
1044 dev_dbg(dev, "add switch rule for TC:%u vsi_idx:%u, lkups_cnt:%u\n",
1045 tc_fltr->action.fwd.tc.tc_class,
1046 rule_info.sw_act.vsi_handle, lkups_cnt);
1047 break;
1048 case ICE_FWD_TO_Q:
1049 /* HW queue number in global space */
1050 rule_info.sw_act.fwd_id.q_id = tc_fltr->action.fwd.q.hw_queue;
1051 rule_info.sw_act.vsi_handle = dest_vsi->idx;
1052 rule_info.priority = ICE_SWITCH_FLTR_PRIO_QUEUE;
1053 rule_info.sw_act.src = hw->pf_id;
1054 dev_dbg(dev, "add switch rule action to forward to queue:%u (HW queue %u), lkups_cnt:%u\n",
1055 tc_fltr->action.fwd.q.queue,
1056 tc_fltr->action.fwd.q.hw_queue, lkups_cnt);
1057 break;
1058 case ICE_DROP_PACKET:
1059 rule_info.sw_act.flag |= ICE_FLTR_RX;
1060 rule_info.sw_act.src = hw->pf_id;
1061 rule_info.priority = ICE_SWITCH_FLTR_PRIO_VSI;
1062 break;
1063 default:
1064 ret = -EOPNOTSUPP;
1065 goto exit;
1066 }
1067
1068 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added);
1069 if (ret == -EEXIST) {
1070 NL_SET_ERR_MSG_MOD(tc_fltr->extack,
1071 "Unable to add filter because it already exist");
1072 ret = -EINVAL;
1073 goto exit;
1074 } else if (ret) {
1075 NL_SET_ERR_MSG_MOD(tc_fltr->extack,
1076 "Unable to add filter due to error");
1077 goto exit;
1078 }
1079
1080 /* store the output params, which are needed later for removing
1081 * advanced switch filter
1082 */
1083 tc_fltr->rid = rule_added.rid;
1084 tc_fltr->rule_id = rule_added.rule_id;
1085 tc_fltr->dest_vsi_handle = rule_added.vsi_handle;
1086 if (tc_fltr->action.fltr_act == ICE_FWD_TO_VSI ||
1087 tc_fltr->action.fltr_act == ICE_FWD_TO_Q) {
1088 tc_fltr->dest_vsi = dest_vsi;
1089 /* keep track of advanced switch filter for
1090 * destination VSI
1091 */
1092 dest_vsi->num_chnl_fltr++;
1093
1094 /* keeps track of channel filters for PF VSI */
1095 if (vsi->type == ICE_VSI_PF &&
1096 (flags & (ICE_TC_FLWR_FIELD_DST_MAC |
1097 ICE_TC_FLWR_FIELD_ENC_DST_MAC)))
1098 pf->num_dmac_chnl_fltrs++;
1099 }
1100 switch (tc_fltr->action.fltr_act) {
1101 case ICE_FWD_TO_VSI:
1102 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",
1103 lkups_cnt, flags,
1104 tc_fltr->action.fwd.tc.tc_class, rule_added.rid,
1105 rule_added.rule_id, rule_added.vsi_handle);
1106 break;
1107 case ICE_FWD_TO_Q:
1108 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",
1109 lkups_cnt, flags, tc_fltr->action.fwd.q.queue,
1110 tc_fltr->action.fwd.q.hw_queue, rule_added.rid,
1111 rule_added.rule_id);
1112 break;
1113 case ICE_DROP_PACKET:
1114 dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x), action is drop, rid %u, rule_id %u\n",
1115 lkups_cnt, flags, rule_added.rid, rule_added.rule_id);
1116 break;
1117 default:
1118 break;
1119 }
1120exit:
1121 kfree(list);
1122 return ret;
1123}
1124
1125/**
1126 * ice_tc_set_pppoe - Parse PPPoE fields from TC flower filter
1127 * @match: Pointer to flow match structure
1128 * @fltr: Pointer to filter structure
1129 * @headers: Pointer to outer header fields
1130 * @returns PPP protocol used in filter (ppp_ses or ppp_disc)
1131 */
1132static u16
1133ice_tc_set_pppoe(struct flow_match_pppoe *match,
1134 struct ice_tc_flower_fltr *fltr,
1135 struct ice_tc_flower_lyr_2_4_hdrs *headers)
1136{
1137 if (match->mask->session_id) {
1138 fltr->flags |= ICE_TC_FLWR_FIELD_PPPOE_SESSID;
1139 headers->pppoe_hdr.session_id = match->key->session_id;
1140 }
1141
1142 if (match->mask->ppp_proto) {
1143 fltr->flags |= ICE_TC_FLWR_FIELD_PPP_PROTO;
1144 headers->pppoe_hdr.ppp_proto = match->key->ppp_proto;
1145 }
1146
1147 return be16_to_cpu(match->key->type);
1148}
1149
1150/**
1151 * ice_tc_set_ipv4 - Parse IPv4 addresses from TC flower filter
1152 * @match: Pointer to flow match structure
1153 * @fltr: Pointer to filter structure
1154 * @headers: inner or outer header fields
1155 * @is_encap: set true for tunnel IPv4 address
1156 */
1157static int
1158ice_tc_set_ipv4(struct flow_match_ipv4_addrs *match,
1159 struct ice_tc_flower_fltr *fltr,
1160 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap)
1161{
1162 if (match->key->dst) {
1163 if (is_encap)
1164 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV4;
1165 else
1166 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV4;
1167 headers->l3_key.dst_ipv4 = match->key->dst;
1168 headers->l3_mask.dst_ipv4 = match->mask->dst;
1169 }
1170 if (match->key->src) {
1171 if (is_encap)
1172 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV4;
1173 else
1174 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV4;
1175 headers->l3_key.src_ipv4 = match->key->src;
1176 headers->l3_mask.src_ipv4 = match->mask->src;
1177 }
1178 return 0;
1179}
1180
1181/**
1182 * ice_tc_set_ipv6 - Parse IPv6 addresses from TC flower filter
1183 * @match: Pointer to flow match structure
1184 * @fltr: Pointer to filter structure
1185 * @headers: inner or outer header fields
1186 * @is_encap: set true for tunnel IPv6 address
1187 */
1188static int
1189ice_tc_set_ipv6(struct flow_match_ipv6_addrs *match,
1190 struct ice_tc_flower_fltr *fltr,
1191 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap)
1192{
1193 struct ice_tc_l3_hdr *l3_key, *l3_mask;
1194
1195 /* src and dest IPV6 address should not be LOOPBACK
1196 * (0:0:0:0:0:0:0:1), which can be represented as ::1
1197 */
1198 if (ipv6_addr_loopback(&match->key->dst) ||
1199 ipv6_addr_loopback(&match->key->src)) {
1200 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad IPv6, addr is LOOPBACK");
1201 return -EINVAL;
1202 }
1203 /* if src/dest IPv6 address is *,* error */
1204 if (ipv6_addr_any(&match->mask->dst) &&
1205 ipv6_addr_any(&match->mask->src)) {
1206 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad src/dest IPv6, addr is any");
1207 return -EINVAL;
1208 }
1209 if (!ipv6_addr_any(&match->mask->dst)) {
1210 if (is_encap)
1211 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV6;
1212 else
1213 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV6;
1214 }
1215 if (!ipv6_addr_any(&match->mask->src)) {
1216 if (is_encap)
1217 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV6;
1218 else
1219 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV6;
1220 }
1221
1222 l3_key = &headers->l3_key;
1223 l3_mask = &headers->l3_mask;
1224
1225 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 |
1226 ICE_TC_FLWR_FIELD_SRC_IPV6)) {
1227 memcpy(&l3_key->src_ipv6_addr, &match->key->src.s6_addr,
1228 sizeof(match->key->src.s6_addr));
1229 memcpy(&l3_mask->src_ipv6_addr, &match->mask->src.s6_addr,
1230 sizeof(match->mask->src.s6_addr));
1231 }
1232 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 |
1233 ICE_TC_FLWR_FIELD_DEST_IPV6)) {
1234 memcpy(&l3_key->dst_ipv6_addr, &match->key->dst.s6_addr,
1235 sizeof(match->key->dst.s6_addr));
1236 memcpy(&l3_mask->dst_ipv6_addr, &match->mask->dst.s6_addr,
1237 sizeof(match->mask->dst.s6_addr));
1238 }
1239
1240 return 0;
1241}
1242
1243/**
1244 * ice_tc_set_tos_ttl - Parse IP ToS/TTL from TC flower filter
1245 * @match: Pointer to flow match structure
1246 * @fltr: Pointer to filter structure
1247 * @headers: inner or outer header fields
1248 * @is_encap: set true for tunnel
1249 */
1250static void
1251ice_tc_set_tos_ttl(struct flow_match_ip *match,
1252 struct ice_tc_flower_fltr *fltr,
1253 struct ice_tc_flower_lyr_2_4_hdrs *headers,
1254 bool is_encap)
1255{
1256 if (match->mask->tos) {
1257 if (is_encap)
1258 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_IP_TOS;
1259 else
1260 fltr->flags |= ICE_TC_FLWR_FIELD_IP_TOS;
1261
1262 headers->l3_key.tos = match->key->tos;
1263 headers->l3_mask.tos = match->mask->tos;
1264 }
1265
1266 if (match->mask->ttl) {
1267 if (is_encap)
1268 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_IP_TTL;
1269 else
1270 fltr->flags |= ICE_TC_FLWR_FIELD_IP_TTL;
1271
1272 headers->l3_key.ttl = match->key->ttl;
1273 headers->l3_mask.ttl = match->mask->ttl;
1274 }
1275}
1276
1277/**
1278 * ice_tc_set_port - Parse ports from TC flower filter
1279 * @match: Flow match structure
1280 * @fltr: Pointer to filter structure
1281 * @headers: inner or outer header fields
1282 * @is_encap: set true for tunnel port
1283 */
1284static int
1285ice_tc_set_port(struct flow_match_ports match,
1286 struct ice_tc_flower_fltr *fltr,
1287 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap)
1288{
1289 if (match.key->dst) {
1290 if (is_encap)
1291 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT;
1292 else
1293 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_L4_PORT;
1294
1295 headers->l4_key.dst_port = match.key->dst;
1296 headers->l4_mask.dst_port = match.mask->dst;
1297 }
1298 if (match.key->src) {
1299 if (is_encap)
1300 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT;
1301 else
1302 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_L4_PORT;
1303
1304 headers->l4_key.src_port = match.key->src;
1305 headers->l4_mask.src_port = match.mask->src;
1306 }
1307 return 0;
1308}
1309
1310static struct net_device *
1311ice_get_tunnel_device(struct net_device *dev, struct flow_rule *rule)
1312{
1313 struct flow_action_entry *act;
1314 int i;
1315
1316 if (ice_is_tunnel_supported(dev))
1317 return dev;
1318
1319 flow_action_for_each(i, act, &rule->action) {
1320 if (act->id == FLOW_ACTION_REDIRECT &&
1321 ice_is_tunnel_supported(act->dev))
1322 return act->dev;
1323 }
1324
1325 return NULL;
1326}
1327
1328/**
1329 * ice_parse_gtp_type - Sets GTP tunnel type to GTP-U or GTP-C
1330 * @match: Flow match structure
1331 * @fltr: Pointer to filter structure
1332 *
1333 * GTP-C/GTP-U is selected based on destination port number (enc_dst_port).
1334 * Before calling this funtcion, fltr->tunnel_type should be set to TNL_GTPU,
1335 * therefore making GTP-U the default choice (when destination port number is
1336 * not specified).
1337 */
1338static int
1339ice_parse_gtp_type(struct flow_match_ports match,
1340 struct ice_tc_flower_fltr *fltr)
1341{
1342 u16 dst_port;
1343
1344 if (match.key->dst) {
1345 dst_port = be16_to_cpu(match.key->dst);
1346
1347 switch (dst_port) {
1348 case 2152:
1349 break;
1350 case 2123:
1351 fltr->tunnel_type = TNL_GTPC;
1352 break;
1353 default:
1354 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported GTP port number");
1355 return -EINVAL;
1356 }
1357 }
1358
1359 return 0;
1360}
1361
1362static int
1363ice_parse_tunnel_attr(struct net_device *dev, struct flow_rule *rule,
1364 struct ice_tc_flower_fltr *fltr)
1365{
1366 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers;
1367 struct netlink_ext_ack *extack = fltr->extack;
1368 struct flow_match_control enc_control;
1369
1370 fltr->tunnel_type = ice_tc_tun_get_type(dev);
1371 headers->l3_key.ip_proto = IPPROTO_UDP;
1372
1373 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
1374 struct flow_match_enc_keyid enc_keyid;
1375
1376 flow_rule_match_enc_keyid(rule, &enc_keyid);
1377
1378 if (!enc_keyid.mask->keyid ||
1379 enc_keyid.mask->keyid != cpu_to_be32(ICE_TC_FLOWER_MASK_32))
1380 return -EINVAL;
1381
1382 fltr->flags |= ICE_TC_FLWR_FIELD_TENANT_ID;
1383 fltr->tenant_id = enc_keyid.key->keyid;
1384 }
1385
1386 flow_rule_match_enc_control(rule, &enc_control);
1387
1388 if (flow_rule_has_enc_control_flags(enc_control.mask->flags, extack))
1389 return -EOPNOTSUPP;
1390
1391 if (enc_control.key->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1392 struct flow_match_ipv4_addrs match;
1393
1394 flow_rule_match_enc_ipv4_addrs(rule, &match);
1395 if (ice_tc_set_ipv4(&match, fltr, headers, true))
1396 return -EINVAL;
1397 } else if (enc_control.key->addr_type ==
1398 FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1399 struct flow_match_ipv6_addrs match;
1400
1401 flow_rule_match_enc_ipv6_addrs(rule, &match);
1402 if (ice_tc_set_ipv6(&match, fltr, headers, true))
1403 return -EINVAL;
1404 }
1405
1406 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) {
1407 struct flow_match_ip match;
1408
1409 flow_rule_match_enc_ip(rule, &match);
1410 ice_tc_set_tos_ttl(&match, fltr, headers, true);
1411 }
1412
1413 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS) &&
1414 fltr->tunnel_type != TNL_VXLAN && fltr->tunnel_type != TNL_GENEVE) {
1415 struct flow_match_ports match;
1416
1417 flow_rule_match_enc_ports(rule, &match);
1418
1419 if (fltr->tunnel_type != TNL_GTPU) {
1420 if (ice_tc_set_port(match, fltr, headers, true))
1421 return -EINVAL;
1422 } else {
1423 if (ice_parse_gtp_type(match, fltr))
1424 return -EINVAL;
1425 }
1426 }
1427
1428 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_OPTS) &&
1429 (fltr->tunnel_type == TNL_GTPU || fltr->tunnel_type == TNL_GTPC)) {
1430 struct flow_match_enc_opts match;
1431
1432 flow_rule_match_enc_opts(rule, &match);
1433
1434 memcpy(&fltr->gtp_pdu_info_keys, &match.key->data[0],
1435 sizeof(struct gtp_pdu_session_info));
1436
1437 memcpy(&fltr->gtp_pdu_info_masks, &match.mask->data[0],
1438 sizeof(struct gtp_pdu_session_info));
1439
1440 fltr->flags |= ICE_TC_FLWR_FIELD_GTP_OPTS;
1441 }
1442
1443 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_OPTS) &&
1444 fltr->tunnel_type == TNL_PFCP) {
1445 struct flow_match_enc_opts match;
1446
1447 flow_rule_match_enc_opts(rule, &match);
1448
1449 memcpy(&fltr->pfcp_meta_keys, match.key->data,
1450 sizeof(struct pfcp_metadata));
1451 memcpy(&fltr->pfcp_meta_masks, match.mask->data,
1452 sizeof(struct pfcp_metadata));
1453
1454 fltr->flags |= ICE_TC_FLWR_FIELD_PFCP_OPTS;
1455 }
1456
1457 return 0;
1458}
1459
1460/**
1461 * ice_parse_cls_flower - Parse TC flower filters provided by kernel
1462 * @vsi: Pointer to the VSI
1463 * @filter_dev: Pointer to device on which filter is being added
1464 * @f: Pointer to struct flow_cls_offload
1465 * @fltr: Pointer to filter structure
1466 */
1467static int
1468ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi,
1469 struct flow_cls_offload *f,
1470 struct ice_tc_flower_fltr *fltr)
1471{
1472 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers;
1473 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
1474 u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0;
1475 struct flow_dissector *dissector;
1476 struct net_device *tunnel_dev;
1477
1478 dissector = rule->match.dissector;
1479
1480 if (dissector->used_keys &
1481 ~(BIT_ULL(FLOW_DISSECTOR_KEY_CONTROL) |
1482 BIT_ULL(FLOW_DISSECTOR_KEY_BASIC) |
1483 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
1484 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN) |
1485 BIT_ULL(FLOW_DISSECTOR_KEY_CVLAN) |
1486 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
1487 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
1488 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
1489 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_KEYID) |
1490 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
1491 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
1492 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_PORTS) |
1493 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_OPTS) |
1494 BIT_ULL(FLOW_DISSECTOR_KEY_IP) |
1495 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_IP) |
1496 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS) |
1497 BIT_ULL(FLOW_DISSECTOR_KEY_PPPOE) |
1498 BIT_ULL(FLOW_DISSECTOR_KEY_L2TPV3))) {
1499 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported key used");
1500 return -EOPNOTSUPP;
1501 }
1502
1503 tunnel_dev = ice_get_tunnel_device(filter_dev, rule);
1504 if (tunnel_dev) {
1505 int err;
1506
1507 filter_dev = tunnel_dev;
1508
1509 err = ice_parse_tunnel_attr(filter_dev, rule, fltr);
1510 if (err) {
1511 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to parse TC flower tunnel attributes");
1512 return err;
1513 }
1514
1515 /* PFCP is considered non-tunneled - don't swap headers. */
1516 if (fltr->tunnel_type != TNL_PFCP) {
1517 /* Header pointers should point to the inner headers,
1518 * outer header were already set by
1519 * ice_parse_tunnel_attr().
1520 */
1521 headers = &fltr->inner_headers;
1522 }
1523 } else if (dissector->used_keys &
1524 (BIT_ULL(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
1525 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
1526 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_KEYID) |
1527 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_PORTS) |
1528 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_IP) |
1529 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_OPTS) |
1530 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_CONTROL))) {
1531 NL_SET_ERR_MSG_MOD(fltr->extack, "Tunnel key used, but device isn't a tunnel");
1532 return -EOPNOTSUPP;
1533 } else {
1534 fltr->tunnel_type = TNL_LAST;
1535 }
1536
1537 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
1538 struct flow_match_basic match;
1539
1540 flow_rule_match_basic(rule, &match);
1541
1542 n_proto_key = ntohs(match.key->n_proto);
1543 n_proto_mask = ntohs(match.mask->n_proto);
1544
1545 if (n_proto_key == ETH_P_ALL || n_proto_key == 0 ||
1546 fltr->tunnel_type == TNL_GTPU ||
1547 fltr->tunnel_type == TNL_GTPC) {
1548 n_proto_key = 0;
1549 n_proto_mask = 0;
1550 } else {
1551 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID;
1552 }
1553
1554 headers->l2_key.n_proto = cpu_to_be16(n_proto_key);
1555 headers->l2_mask.n_proto = cpu_to_be16(n_proto_mask);
1556 headers->l3_key.ip_proto = match.key->ip_proto;
1557 }
1558
1559 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
1560 struct flow_match_eth_addrs match;
1561
1562 flow_rule_match_eth_addrs(rule, &match);
1563
1564 if (!is_zero_ether_addr(match.key->dst)) {
1565 ether_addr_copy(headers->l2_key.dst_mac,
1566 match.key->dst);
1567 ether_addr_copy(headers->l2_mask.dst_mac,
1568 match.mask->dst);
1569 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC;
1570 }
1571
1572 if (!is_zero_ether_addr(match.key->src)) {
1573 ether_addr_copy(headers->l2_key.src_mac,
1574 match.key->src);
1575 ether_addr_copy(headers->l2_mask.src_mac,
1576 match.mask->src);
1577 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_MAC;
1578 }
1579 }
1580
1581 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) ||
1582 is_vlan_dev(filter_dev)) {
1583 struct flow_dissector_key_vlan mask;
1584 struct flow_dissector_key_vlan key;
1585 struct flow_match_vlan match;
1586
1587 if (is_vlan_dev(filter_dev)) {
1588 match.key = &key;
1589 match.key->vlan_id = vlan_dev_vlan_id(filter_dev);
1590 match.key->vlan_priority = 0;
1591 match.mask = &mask;
1592 memset(match.mask, 0xff, sizeof(*match.mask));
1593 match.mask->vlan_priority = 0;
1594 } else {
1595 flow_rule_match_vlan(rule, &match);
1596 }
1597
1598 if (match.mask->vlan_id) {
1599 if (match.mask->vlan_id == VLAN_VID_MASK) {
1600 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN;
1601 headers->vlan_hdr.vlan_id =
1602 cpu_to_be16(match.key->vlan_id &
1603 VLAN_VID_MASK);
1604 } else {
1605 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad VLAN mask");
1606 return -EINVAL;
1607 }
1608 }
1609
1610 if (match.mask->vlan_priority) {
1611 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN_PRIO;
1612 headers->vlan_hdr.vlan_prio =
1613 be16_encode_bits(match.key->vlan_priority,
1614 VLAN_PRIO_MASK);
1615 }
1616
1617 if (match.mask->vlan_tpid) {
1618 headers->vlan_hdr.vlan_tpid = match.key->vlan_tpid;
1619 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN_TPID;
1620 }
1621 }
1622
1623 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
1624 struct flow_match_vlan match;
1625
1626 if (!ice_is_dvm_ena(&vsi->back->hw)) {
1627 NL_SET_ERR_MSG_MOD(fltr->extack, "Double VLAN mode is not enabled");
1628 return -EINVAL;
1629 }
1630
1631 flow_rule_match_cvlan(rule, &match);
1632
1633 if (match.mask->vlan_id) {
1634 if (match.mask->vlan_id == VLAN_VID_MASK) {
1635 fltr->flags |= ICE_TC_FLWR_FIELD_CVLAN;
1636 headers->cvlan_hdr.vlan_id =
1637 cpu_to_be16(match.key->vlan_id &
1638 VLAN_VID_MASK);
1639 } else {
1640 NL_SET_ERR_MSG_MOD(fltr->extack,
1641 "Bad CVLAN mask");
1642 return -EINVAL;
1643 }
1644 }
1645
1646 if (match.mask->vlan_priority) {
1647 fltr->flags |= ICE_TC_FLWR_FIELD_CVLAN_PRIO;
1648 headers->cvlan_hdr.vlan_prio =
1649 be16_encode_bits(match.key->vlan_priority,
1650 VLAN_PRIO_MASK);
1651 }
1652 }
1653
1654 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PPPOE)) {
1655 struct flow_match_pppoe match;
1656
1657 flow_rule_match_pppoe(rule, &match);
1658 n_proto_key = ice_tc_set_pppoe(&match, fltr, headers);
1659
1660 /* If ethertype equals ETH_P_PPP_SES, n_proto might be
1661 * overwritten by encapsulated protocol (ppp_proto field) or set
1662 * to 0. To correct this, flow_match_pppoe provides the type
1663 * field, which contains the actual ethertype (ETH_P_PPP_SES).
1664 */
1665 headers->l2_key.n_proto = cpu_to_be16(n_proto_key);
1666 headers->l2_mask.n_proto = cpu_to_be16(0xFFFF);
1667 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID;
1668 }
1669
1670 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
1671 struct flow_match_control match;
1672
1673 flow_rule_match_control(rule, &match);
1674
1675 addr_type = match.key->addr_type;
1676
1677 if (flow_rule_has_control_flags(match.mask->flags,
1678 fltr->extack))
1679 return -EOPNOTSUPP;
1680 }
1681
1682 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1683 struct flow_match_ipv4_addrs match;
1684
1685 flow_rule_match_ipv4_addrs(rule, &match);
1686 if (ice_tc_set_ipv4(&match, fltr, headers, false))
1687 return -EINVAL;
1688 }
1689
1690 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1691 struct flow_match_ipv6_addrs match;
1692
1693 flow_rule_match_ipv6_addrs(rule, &match);
1694 if (ice_tc_set_ipv6(&match, fltr, headers, false))
1695 return -EINVAL;
1696 }
1697
1698 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
1699 struct flow_match_ip match;
1700
1701 flow_rule_match_ip(rule, &match);
1702 ice_tc_set_tos_ttl(&match, fltr, headers, false);
1703 }
1704
1705 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_L2TPV3)) {
1706 struct flow_match_l2tpv3 match;
1707
1708 flow_rule_match_l2tpv3(rule, &match);
1709
1710 fltr->flags |= ICE_TC_FLWR_FIELD_L2TPV3_SESSID;
1711 headers->l2tpv3_hdr.session_id = match.key->session_id;
1712 }
1713
1714 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
1715 struct flow_match_ports match;
1716
1717 flow_rule_match_ports(rule, &match);
1718 if (ice_tc_set_port(match, fltr, headers, false))
1719 return -EINVAL;
1720 switch (headers->l3_key.ip_proto) {
1721 case IPPROTO_TCP:
1722 case IPPROTO_UDP:
1723 break;
1724 default:
1725 NL_SET_ERR_MSG_MOD(fltr->extack, "Only UDP and TCP transport are supported");
1726 return -EINVAL;
1727 }
1728 }
1729 return 0;
1730}
1731
1732/**
1733 * ice_add_switch_fltr - Add TC flower filters
1734 * @vsi: Pointer to VSI
1735 * @fltr: Pointer to struct ice_tc_flower_fltr
1736 *
1737 * Add filter in HW switch block
1738 */
1739static int
1740ice_add_switch_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
1741{
1742 if (fltr->action.fltr_act == ICE_FWD_TO_QGRP)
1743 return -EOPNOTSUPP;
1744
1745 if (ice_is_eswitch_mode_switchdev(vsi->back))
1746 return ice_eswitch_add_tc_fltr(vsi, fltr);
1747
1748 return ice_add_tc_flower_adv_fltr(vsi, fltr);
1749}
1750
1751/**
1752 * ice_prep_adq_filter - Prepare ADQ filter with the required additional headers
1753 * @vsi: Pointer to VSI
1754 * @fltr: Pointer to TC flower filter structure
1755 *
1756 * Prepare ADQ filter with the required additional header fields
1757 */
1758static int
1759ice_prep_adq_filter(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
1760{
1761 if ((fltr->flags & ICE_TC_FLWR_FIELD_TENANT_ID) &&
1762 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC |
1763 ICE_TC_FLWR_FIELD_SRC_MAC))) {
1764 NL_SET_ERR_MSG_MOD(fltr->extack,
1765 "Unable to add filter because filter using tunnel key and inner MAC is unsupported combination");
1766 return -EOPNOTSUPP;
1767 }
1768
1769 /* For ADQ, filter must include dest MAC address, otherwise unwanted
1770 * packets with unrelated MAC address get delivered to ADQ VSIs as long
1771 * as remaining filter criteria is satisfied such as dest IP address
1772 * and dest/src L4 port. Below code handles the following cases:
1773 * 1. For non-tunnel, if user specify MAC addresses, use them.
1774 * 2. For non-tunnel, if user didn't specify MAC address, add implicit
1775 * dest MAC to be lower netdev's active unicast MAC address
1776 * 3. For tunnel, as of now TC-filter through flower classifier doesn't
1777 * have provision for user to specify outer DMAC, hence driver to
1778 * implicitly add outer dest MAC to be lower netdev's active unicast
1779 * MAC address.
1780 */
1781 if (fltr->tunnel_type != TNL_LAST &&
1782 !(fltr->flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC))
1783 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DST_MAC;
1784
1785 if (fltr->tunnel_type == TNL_LAST &&
1786 !(fltr->flags & ICE_TC_FLWR_FIELD_DST_MAC))
1787 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC;
1788
1789 if (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC |
1790 ICE_TC_FLWR_FIELD_ENC_DST_MAC)) {
1791 ether_addr_copy(fltr->outer_headers.l2_key.dst_mac,
1792 vsi->netdev->dev_addr);
1793 eth_broadcast_addr(fltr->outer_headers.l2_mask.dst_mac);
1794 }
1795
1796 /* Make sure VLAN is already added to main VSI, before allowing ADQ to
1797 * add a VLAN based filter such as MAC + VLAN + L4 port.
1798 */
1799 if (fltr->flags & ICE_TC_FLWR_FIELD_VLAN) {
1800 u16 vlan_id = be16_to_cpu(fltr->outer_headers.vlan_hdr.vlan_id);
1801
1802 if (!ice_vlan_fltr_exist(&vsi->back->hw, vlan_id, vsi->idx)) {
1803 NL_SET_ERR_MSG_MOD(fltr->extack,
1804 "Unable to add filter because legacy VLAN filter for specified destination doesn't exist");
1805 return -EINVAL;
1806 }
1807 }
1808 return 0;
1809}
1810
1811/**
1812 * ice_handle_tclass_action - Support directing to a traffic class
1813 * @vsi: Pointer to VSI
1814 * @cls_flower: Pointer to TC flower offload structure
1815 * @fltr: Pointer to TC flower filter structure
1816 *
1817 * Support directing traffic to a traffic class/queue-set
1818 */
1819static int
1820ice_handle_tclass_action(struct ice_vsi *vsi,
1821 struct flow_cls_offload *cls_flower,
1822 struct ice_tc_flower_fltr *fltr)
1823{
1824 int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid);
1825
1826 /* user specified hw_tc (must be non-zero for ADQ TC), action is forward
1827 * to hw_tc (i.e. ADQ channel number)
1828 */
1829 if (tc < ICE_CHNL_START_TC) {
1830 NL_SET_ERR_MSG_MOD(fltr->extack,
1831 "Unable to add filter because of unsupported destination");
1832 return -EOPNOTSUPP;
1833 }
1834 if (!(vsi->all_enatc & BIT(tc))) {
1835 NL_SET_ERR_MSG_MOD(fltr->extack,
1836 "Unable to add filter because of non-existence destination");
1837 return -EINVAL;
1838 }
1839 fltr->action.fltr_act = ICE_FWD_TO_VSI;
1840 fltr->action.fwd.tc.tc_class = tc;
1841
1842 return ice_prep_adq_filter(vsi, fltr);
1843}
1844
1845static int
1846ice_tc_forward_to_queue(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr,
1847 struct flow_action_entry *act)
1848{
1849 struct ice_vsi *ch_vsi = NULL;
1850 u16 queue = act->rx_queue;
1851
1852 if (queue >= vsi->num_rxq) {
1853 NL_SET_ERR_MSG_MOD(fltr->extack,
1854 "Unable to add filter because specified queue is invalid");
1855 return -EINVAL;
1856 }
1857 fltr->action.fltr_act = ICE_FWD_TO_Q;
1858 fltr->action.fwd.q.queue = queue;
1859 /* determine corresponding HW queue */
1860 fltr->action.fwd.q.hw_queue = vsi->rxq_map[queue];
1861
1862 /* If ADQ is configured, and the queue belongs to ADQ VSI, then prepare
1863 * ADQ switch filter
1864 */
1865 ch_vsi = ice_locate_vsi_using_queue(vsi, fltr->action.fwd.q.queue);
1866 if (!ch_vsi)
1867 return -EINVAL;
1868 fltr->dest_vsi = ch_vsi;
1869 if (!ice_is_chnl_fltr(fltr))
1870 return 0;
1871
1872 return ice_prep_adq_filter(vsi, fltr);
1873}
1874
1875static int
1876ice_tc_parse_action(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr,
1877 struct flow_action_entry *act)
1878{
1879 switch (act->id) {
1880 case FLOW_ACTION_RX_QUEUE_MAPPING:
1881 /* forward to queue */
1882 return ice_tc_forward_to_queue(vsi, fltr, act);
1883 case FLOW_ACTION_DROP:
1884 fltr->action.fltr_act = ICE_DROP_PACKET;
1885 return 0;
1886 default:
1887 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported TC action");
1888 return -EOPNOTSUPP;
1889 }
1890}
1891
1892/**
1893 * ice_parse_tc_flower_actions - Parse the actions for a TC filter
1894 * @filter_dev: Pointer to device on which filter is being added
1895 * @vsi: Pointer to VSI
1896 * @cls_flower: Pointer to TC flower offload structure
1897 * @fltr: Pointer to TC flower filter structure
1898 *
1899 * Parse the actions for a TC filter
1900 */
1901static int ice_parse_tc_flower_actions(struct net_device *filter_dev,
1902 struct ice_vsi *vsi,
1903 struct flow_cls_offload *cls_flower,
1904 struct ice_tc_flower_fltr *fltr)
1905{
1906 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower);
1907 struct flow_action *flow_action = &rule->action;
1908 struct flow_action_entry *act;
1909 int i, err;
1910
1911 if (cls_flower->classid)
1912 return ice_handle_tclass_action(vsi, cls_flower, fltr);
1913
1914 if (!flow_action_has_entries(flow_action))
1915 return -EINVAL;
1916
1917 flow_action_for_each(i, act, flow_action) {
1918 if (ice_is_eswitch_mode_switchdev(vsi->back))
1919 err = ice_eswitch_tc_parse_action(filter_dev, fltr, act);
1920 else
1921 err = ice_tc_parse_action(vsi, fltr, act);
1922 if (err)
1923 return err;
1924 continue;
1925 }
1926 return 0;
1927}
1928
1929/**
1930 * ice_del_tc_fltr - deletes a filter from HW table
1931 * @vsi: Pointer to VSI
1932 * @fltr: Pointer to struct ice_tc_flower_fltr
1933 *
1934 * This function deletes a filter from HW table and manages book-keeping
1935 */
1936static int ice_del_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
1937{
1938 struct ice_rule_query_data rule_rem;
1939 struct ice_pf *pf = vsi->back;
1940 int err;
1941
1942 rule_rem.rid = fltr->rid;
1943 rule_rem.rule_id = fltr->rule_id;
1944 rule_rem.vsi_handle = fltr->dest_vsi_handle;
1945 err = ice_rem_adv_rule_by_id(&pf->hw, &rule_rem);
1946 if (err) {
1947 if (err == -ENOENT) {
1948 NL_SET_ERR_MSG_MOD(fltr->extack, "Filter does not exist");
1949 return -ENOENT;
1950 }
1951 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to delete TC flower filter");
1952 return -EIO;
1953 }
1954
1955 /* update advanced switch filter count for destination
1956 * VSI if filter destination was VSI
1957 */
1958 if (fltr->dest_vsi) {
1959 if (fltr->dest_vsi->type == ICE_VSI_CHNL) {
1960 fltr->dest_vsi->num_chnl_fltr--;
1961
1962 /* keeps track of channel filters for PF VSI */
1963 if (vsi->type == ICE_VSI_PF &&
1964 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC |
1965 ICE_TC_FLWR_FIELD_ENC_DST_MAC)))
1966 pf->num_dmac_chnl_fltrs--;
1967 }
1968 }
1969 return 0;
1970}
1971
1972/**
1973 * ice_add_tc_fltr - adds a TC flower filter
1974 * @netdev: Pointer to netdev
1975 * @vsi: Pointer to VSI
1976 * @f: Pointer to flower offload structure
1977 * @__fltr: Pointer to struct ice_tc_flower_fltr
1978 *
1979 * This function parses TC-flower input fields, parses action,
1980 * and adds a filter.
1981 */
1982static int
1983ice_add_tc_fltr(struct net_device *netdev, struct ice_vsi *vsi,
1984 struct flow_cls_offload *f,
1985 struct ice_tc_flower_fltr **__fltr)
1986{
1987 struct ice_tc_flower_fltr *fltr;
1988 int err;
1989
1990 /* by default, set output to be INVALID */
1991 *__fltr = NULL;
1992
1993 fltr = kzalloc(sizeof(*fltr), GFP_KERNEL);
1994 if (!fltr)
1995 return -ENOMEM;
1996
1997 fltr->cookie = f->cookie;
1998 fltr->extack = f->common.extack;
1999 fltr->src_vsi = vsi;
2000 INIT_HLIST_NODE(&fltr->tc_flower_node);
2001
2002 err = ice_parse_cls_flower(netdev, vsi, f, fltr);
2003 if (err < 0)
2004 goto err;
2005
2006 err = ice_parse_tc_flower_actions(netdev, vsi, f, fltr);
2007 if (err < 0)
2008 goto err;
2009
2010 err = ice_add_switch_fltr(vsi, fltr);
2011 if (err < 0)
2012 goto err;
2013
2014 /* return the newly created filter */
2015 *__fltr = fltr;
2016
2017 return 0;
2018err:
2019 kfree(fltr);
2020 return err;
2021}
2022
2023/**
2024 * ice_find_tc_flower_fltr - Find the TC flower filter in the list
2025 * @pf: Pointer to PF
2026 * @cookie: filter specific cookie
2027 */
2028static struct ice_tc_flower_fltr *
2029ice_find_tc_flower_fltr(struct ice_pf *pf, unsigned long cookie)
2030{
2031 struct ice_tc_flower_fltr *fltr;
2032
2033 hlist_for_each_entry(fltr, &pf->tc_flower_fltr_list, tc_flower_node)
2034 if (cookie == fltr->cookie)
2035 return fltr;
2036
2037 return NULL;
2038}
2039
2040/**
2041 * ice_add_cls_flower - add TC flower filters
2042 * @netdev: Pointer to filter device
2043 * @vsi: Pointer to VSI
2044 * @cls_flower: Pointer to flower offload structure
2045 */
2046int
2047ice_add_cls_flower(struct net_device *netdev, struct ice_vsi *vsi,
2048 struct flow_cls_offload *cls_flower)
2049{
2050 struct netlink_ext_ack *extack = cls_flower->common.extack;
2051 struct net_device *vsi_netdev = vsi->netdev;
2052 struct ice_tc_flower_fltr *fltr;
2053 struct ice_pf *pf = vsi->back;
2054 int err;
2055
2056 if (ice_is_reset_in_progress(pf->state))
2057 return -EBUSY;
2058 if (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags))
2059 return -EINVAL;
2060
2061 if (ice_is_port_repr_netdev(netdev))
2062 vsi_netdev = netdev;
2063
2064 if (!(vsi_netdev->features & NETIF_F_HW_TC) &&
2065 !test_bit(ICE_FLAG_CLS_FLOWER, pf->flags)) {
2066 /* Based on TC indirect notifications from kernel, all ice
2067 * devices get an instance of rule from higher level device.
2068 * Avoid triggering explicit error in this case.
2069 */
2070 if (netdev == vsi_netdev)
2071 NL_SET_ERR_MSG_MOD(extack, "can't apply TC flower filters, turn ON hw-tc-offload and try again");
2072 return -EINVAL;
2073 }
2074
2075 /* avoid duplicate entries, if exists - return error */
2076 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie);
2077 if (fltr) {
2078 NL_SET_ERR_MSG_MOD(extack, "filter cookie already exists, ignoring");
2079 return -EEXIST;
2080 }
2081
2082 /* prep and add TC-flower filter in HW */
2083 err = ice_add_tc_fltr(netdev, vsi, cls_flower, &fltr);
2084 if (err)
2085 return err;
2086
2087 /* add filter into an ordered list */
2088 hlist_add_head(&fltr->tc_flower_node, &pf->tc_flower_fltr_list);
2089 return 0;
2090}
2091
2092/**
2093 * ice_del_cls_flower - delete TC flower filters
2094 * @vsi: Pointer to VSI
2095 * @cls_flower: Pointer to struct flow_cls_offload
2096 */
2097int
2098ice_del_cls_flower(struct ice_vsi *vsi, struct flow_cls_offload *cls_flower)
2099{
2100 struct ice_tc_flower_fltr *fltr;
2101 struct ice_pf *pf = vsi->back;
2102 int err;
2103
2104 /* find filter */
2105 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie);
2106 if (!fltr) {
2107 if (!test_bit(ICE_FLAG_TC_MQPRIO, pf->flags) &&
2108 hlist_empty(&pf->tc_flower_fltr_list))
2109 return 0;
2110
2111 NL_SET_ERR_MSG_MOD(cls_flower->common.extack, "failed to delete TC flower filter because unable to find it");
2112 return -EINVAL;
2113 }
2114
2115 fltr->extack = cls_flower->common.extack;
2116 /* delete filter from HW */
2117 err = ice_del_tc_fltr(vsi, fltr);
2118 if (err)
2119 return err;
2120
2121 /* delete filter from an ordered list */
2122 hlist_del(&fltr->tc_flower_node);
2123
2124 /* free the filter node */
2125 kfree(fltr);
2126
2127 return 0;
2128}
2129
2130/**
2131 * ice_replay_tc_fltrs - replay TC filters
2132 * @pf: pointer to PF struct
2133 */
2134void ice_replay_tc_fltrs(struct ice_pf *pf)
2135{
2136 struct ice_tc_flower_fltr *fltr;
2137 struct hlist_node *node;
2138
2139 hlist_for_each_entry_safe(fltr, node,
2140 &pf->tc_flower_fltr_list,
2141 tc_flower_node) {
2142 fltr->extack = NULL;
2143 ice_add_switch_fltr(fltr->src_vsi, fltr);
2144 }
2145}