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