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