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