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 rule_info.flags_info.act_valid = true;
697
698 if (fltr->direction == ICE_ESWITCH_FLTR_INGRESS) {
699 rule_info.sw_act.flag |= ICE_FLTR_RX;
700 rule_info.sw_act.src = hw->pf_id;
701 rule_info.rx = true;
702 rule_info.flags_info.act = ICE_SINGLE_ACT_LB_ENABLE;
703 } else {
704 rule_info.sw_act.flag |= ICE_FLTR_TX;
705 rule_info.sw_act.src = vsi->idx;
706 rule_info.rx = false;
707 rule_info.flags_info.act = ICE_SINGLE_ACT_LAN_ENABLE;
708 }
709
710 /* specify the cookie as filter_rule_id */
711 rule_info.fltr_rule_id = fltr->cookie;
712
713 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added);
714 if (ret == -EEXIST) {
715 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because it already exist");
716 ret = -EINVAL;
717 goto exit;
718 } else if (ret) {
719 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter due to error");
720 goto exit;
721 }
722
723 /* store the output params, which are needed later for removing
724 * advanced switch filter
725 */
726 fltr->rid = rule_added.rid;
727 fltr->rule_id = rule_added.rule_id;
728 fltr->dest_id = rule_added.vsi_handle;
729
730 exit:
731 kfree(list);
732 return ret;
733 }
734
735 /**
736 * ice_add_tc_flower_adv_fltr - add appropriate filter rules
737 * @vsi: Pointer to VSI
738 * @tc_fltr: Pointer to TC flower filter structure
739 *
740 * based on filter parameters using Advance recipes supported
741 * by OS package.
742 */
743 static int
ice_add_tc_flower_adv_fltr(struct ice_vsi * vsi,struct ice_tc_flower_fltr * tc_fltr)744 ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi,
745 struct ice_tc_flower_fltr *tc_fltr)
746 {
747 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers;
748 struct ice_adv_rule_info rule_info = {0};
749 struct ice_rule_query_data rule_added;
750 struct ice_adv_lkup_elem *list;
751 struct ice_pf *pf = vsi->back;
752 struct ice_hw *hw = &pf->hw;
753 u32 flags = tc_fltr->flags;
754 struct ice_vsi *ch_vsi;
755 struct device *dev;
756 u16 lkups_cnt = 0;
757 u16 l4_proto = 0;
758 int ret = 0;
759 u16 i = 0;
760
761 dev = ice_pf_to_dev(pf);
762 if (ice_is_safe_mode(pf)) {
763 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because driver is in safe mode");
764 return -EOPNOTSUPP;
765 }
766
767 if (!flags || (flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 |
768 ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 |
769 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 |
770 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 |
771 ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT))) {
772 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unsupported encap field(s)");
773 return -EOPNOTSUPP;
774 }
775
776 /* get the channel (aka ADQ VSI) */
777 if (tc_fltr->dest_vsi)
778 ch_vsi = tc_fltr->dest_vsi;
779 else
780 ch_vsi = vsi->tc_map_vsi[tc_fltr->action.tc_class];
781
782 lkups_cnt = ice_tc_count_lkups(flags, headers, tc_fltr);
783 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC);
784 if (!list)
785 return -ENOMEM;
786
787 i = ice_tc_fill_rules(hw, flags, tc_fltr, list, &rule_info, &l4_proto);
788 if (i != lkups_cnt) {
789 ret = -EINVAL;
790 goto exit;
791 }
792
793 rule_info.sw_act.fltr_act = tc_fltr->action.fltr_act;
794 if (tc_fltr->action.tc_class >= ICE_CHNL_START_TC) {
795 if (!ch_vsi) {
796 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because specified destination doesn't exist");
797 ret = -EINVAL;
798 goto exit;
799 }
800
801 rule_info.sw_act.fltr_act = ICE_FWD_TO_VSI;
802 rule_info.sw_act.vsi_handle = ch_vsi->idx;
803 rule_info.priority = 7;
804 rule_info.sw_act.src = hw->pf_id;
805 rule_info.rx = true;
806 dev_dbg(dev, "add switch rule for TC:%u vsi_idx:%u, lkups_cnt:%u\n",
807 tc_fltr->action.tc_class,
808 rule_info.sw_act.vsi_handle, lkups_cnt);
809 } else {
810 rule_info.sw_act.flag |= ICE_FLTR_TX;
811 rule_info.sw_act.src = vsi->idx;
812 rule_info.rx = false;
813 }
814
815 /* specify the cookie as filter_rule_id */
816 rule_info.fltr_rule_id = tc_fltr->cookie;
817
818 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added);
819 if (ret == -EEXIST) {
820 NL_SET_ERR_MSG_MOD(tc_fltr->extack,
821 "Unable to add filter because it already exist");
822 ret = -EINVAL;
823 goto exit;
824 } else if (ret) {
825 NL_SET_ERR_MSG_MOD(tc_fltr->extack,
826 "Unable to add filter due to error");
827 goto exit;
828 }
829
830 /* store the output params, which are needed later for removing
831 * advanced switch filter
832 */
833 tc_fltr->rid = rule_added.rid;
834 tc_fltr->rule_id = rule_added.rule_id;
835 if (tc_fltr->action.tc_class > 0 && ch_vsi) {
836 /* For PF ADQ, VSI type is set as ICE_VSI_CHNL, and
837 * for PF ADQ filter, it is not yet set in tc_fltr,
838 * hence store the dest_vsi ptr in tc_fltr
839 */
840 if (ch_vsi->type == ICE_VSI_CHNL)
841 tc_fltr->dest_vsi = ch_vsi;
842 /* keep track of advanced switch filter for
843 * destination VSI (channel VSI)
844 */
845 ch_vsi->num_chnl_fltr++;
846 /* in this case, dest_id is VSI handle (sw handle) */
847 tc_fltr->dest_id = rule_added.vsi_handle;
848
849 /* keeps track of channel filters for PF VSI */
850 if (vsi->type == ICE_VSI_PF &&
851 (flags & (ICE_TC_FLWR_FIELD_DST_MAC |
852 ICE_TC_FLWR_FIELD_ENC_DST_MAC)))
853 pf->num_dmac_chnl_fltrs++;
854 }
855 dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x) for TC %u, rid %u, rule_id %u, vsi_idx %u\n",
856 lkups_cnt, flags,
857 tc_fltr->action.tc_class, rule_added.rid,
858 rule_added.rule_id, rule_added.vsi_handle);
859 exit:
860 kfree(list);
861 return ret;
862 }
863
864 /**
865 * ice_tc_set_pppoe - Parse PPPoE fields from TC flower filter
866 * @match: Pointer to flow match structure
867 * @fltr: Pointer to filter structure
868 * @headers: Pointer to outer header fields
869 * @returns PPP protocol used in filter (ppp_ses or ppp_disc)
870 */
871 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)872 ice_tc_set_pppoe(struct flow_match_pppoe *match,
873 struct ice_tc_flower_fltr *fltr,
874 struct ice_tc_flower_lyr_2_4_hdrs *headers)
875 {
876 if (match->mask->session_id) {
877 fltr->flags |= ICE_TC_FLWR_FIELD_PPPOE_SESSID;
878 headers->pppoe_hdr.session_id = match->key->session_id;
879 }
880
881 if (match->mask->ppp_proto) {
882 fltr->flags |= ICE_TC_FLWR_FIELD_PPP_PROTO;
883 headers->pppoe_hdr.ppp_proto = match->key->ppp_proto;
884 }
885
886 return be16_to_cpu(match->key->type);
887 }
888
889 /**
890 * ice_tc_set_ipv4 - Parse IPv4 addresses from TC flower filter
891 * @match: Pointer to flow match structure
892 * @fltr: Pointer to filter structure
893 * @headers: inner or outer header fields
894 * @is_encap: set true for tunnel IPv4 address
895 */
896 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)897 ice_tc_set_ipv4(struct flow_match_ipv4_addrs *match,
898 struct ice_tc_flower_fltr *fltr,
899 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap)
900 {
901 if (match->key->dst) {
902 if (is_encap)
903 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV4;
904 else
905 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV4;
906 headers->l3_key.dst_ipv4 = match->key->dst;
907 headers->l3_mask.dst_ipv4 = match->mask->dst;
908 }
909 if (match->key->src) {
910 if (is_encap)
911 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV4;
912 else
913 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV4;
914 headers->l3_key.src_ipv4 = match->key->src;
915 headers->l3_mask.src_ipv4 = match->mask->src;
916 }
917 return 0;
918 }
919
920 /**
921 * ice_tc_set_ipv6 - Parse IPv6 addresses from TC flower filter
922 * @match: Pointer to flow match structure
923 * @fltr: Pointer to filter structure
924 * @headers: inner or outer header fields
925 * @is_encap: set true for tunnel IPv6 address
926 */
927 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)928 ice_tc_set_ipv6(struct flow_match_ipv6_addrs *match,
929 struct ice_tc_flower_fltr *fltr,
930 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap)
931 {
932 struct ice_tc_l3_hdr *l3_key, *l3_mask;
933
934 /* src and dest IPV6 address should not be LOOPBACK
935 * (0:0:0:0:0:0:0:1), which can be represented as ::1
936 */
937 if (ipv6_addr_loopback(&match->key->dst) ||
938 ipv6_addr_loopback(&match->key->src)) {
939 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad IPv6, addr is LOOPBACK");
940 return -EINVAL;
941 }
942 /* if src/dest IPv6 address is *,* error */
943 if (ipv6_addr_any(&match->mask->dst) &&
944 ipv6_addr_any(&match->mask->src)) {
945 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad src/dest IPv6, addr is any");
946 return -EINVAL;
947 }
948 if (!ipv6_addr_any(&match->mask->dst)) {
949 if (is_encap)
950 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV6;
951 else
952 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV6;
953 }
954 if (!ipv6_addr_any(&match->mask->src)) {
955 if (is_encap)
956 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV6;
957 else
958 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV6;
959 }
960
961 l3_key = &headers->l3_key;
962 l3_mask = &headers->l3_mask;
963
964 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 |
965 ICE_TC_FLWR_FIELD_SRC_IPV6)) {
966 memcpy(&l3_key->src_ipv6_addr, &match->key->src.s6_addr,
967 sizeof(match->key->src.s6_addr));
968 memcpy(&l3_mask->src_ipv6_addr, &match->mask->src.s6_addr,
969 sizeof(match->mask->src.s6_addr));
970 }
971 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 |
972 ICE_TC_FLWR_FIELD_DEST_IPV6)) {
973 memcpy(&l3_key->dst_ipv6_addr, &match->key->dst.s6_addr,
974 sizeof(match->key->dst.s6_addr));
975 memcpy(&l3_mask->dst_ipv6_addr, &match->mask->dst.s6_addr,
976 sizeof(match->mask->dst.s6_addr));
977 }
978
979 return 0;
980 }
981
982 /**
983 * ice_tc_set_tos_ttl - Parse IP ToS/TTL from TC flower filter
984 * @match: Pointer to flow match structure
985 * @fltr: Pointer to filter structure
986 * @headers: inner or outer header fields
987 * @is_encap: set true for tunnel
988 */
989 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)990 ice_tc_set_tos_ttl(struct flow_match_ip *match,
991 struct ice_tc_flower_fltr *fltr,
992 struct ice_tc_flower_lyr_2_4_hdrs *headers,
993 bool is_encap)
994 {
995 if (match->mask->tos) {
996 if (is_encap)
997 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_IP_TOS;
998 else
999 fltr->flags |= ICE_TC_FLWR_FIELD_IP_TOS;
1000
1001 headers->l3_key.tos = match->key->tos;
1002 headers->l3_mask.tos = match->mask->tos;
1003 }
1004
1005 if (match->mask->ttl) {
1006 if (is_encap)
1007 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_IP_TTL;
1008 else
1009 fltr->flags |= ICE_TC_FLWR_FIELD_IP_TTL;
1010
1011 headers->l3_key.ttl = match->key->ttl;
1012 headers->l3_mask.ttl = match->mask->ttl;
1013 }
1014 }
1015
1016 /**
1017 * ice_tc_set_port - Parse ports from TC flower filter
1018 * @match: Flow match structure
1019 * @fltr: Pointer to filter structure
1020 * @headers: inner or outer header fields
1021 * @is_encap: set true for tunnel port
1022 */
1023 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)1024 ice_tc_set_port(struct flow_match_ports match,
1025 struct ice_tc_flower_fltr *fltr,
1026 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap)
1027 {
1028 if (match.key->dst) {
1029 if (is_encap)
1030 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT;
1031 else
1032 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_L4_PORT;
1033
1034 headers->l4_key.dst_port = match.key->dst;
1035 headers->l4_mask.dst_port = match.mask->dst;
1036 }
1037 if (match.key->src) {
1038 if (is_encap)
1039 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT;
1040 else
1041 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_L4_PORT;
1042
1043 headers->l4_key.src_port = match.key->src;
1044 headers->l4_mask.src_port = match.mask->src;
1045 }
1046 return 0;
1047 }
1048
1049 static struct net_device *
ice_get_tunnel_device(struct net_device * dev,struct flow_rule * rule)1050 ice_get_tunnel_device(struct net_device *dev, struct flow_rule *rule)
1051 {
1052 struct flow_action_entry *act;
1053 int i;
1054
1055 if (ice_is_tunnel_supported(dev))
1056 return dev;
1057
1058 flow_action_for_each(i, act, &rule->action) {
1059 if (act->id == FLOW_ACTION_REDIRECT &&
1060 ice_is_tunnel_supported(act->dev))
1061 return act->dev;
1062 }
1063
1064 return NULL;
1065 }
1066
1067 /**
1068 * ice_parse_gtp_type - Sets GTP tunnel type to GTP-U or GTP-C
1069 * @match: Flow match structure
1070 * @fltr: Pointer to filter structure
1071 *
1072 * GTP-C/GTP-U is selected based on destination port number (enc_dst_port).
1073 * Before calling this funtcion, fltr->tunnel_type should be set to TNL_GTPU,
1074 * therefore making GTP-U the default choice (when destination port number is
1075 * not specified).
1076 */
1077 static int
ice_parse_gtp_type(struct flow_match_ports match,struct ice_tc_flower_fltr * fltr)1078 ice_parse_gtp_type(struct flow_match_ports match,
1079 struct ice_tc_flower_fltr *fltr)
1080 {
1081 u16 dst_port;
1082
1083 if (match.key->dst) {
1084 dst_port = be16_to_cpu(match.key->dst);
1085
1086 switch (dst_port) {
1087 case 2152:
1088 break;
1089 case 2123:
1090 fltr->tunnel_type = TNL_GTPC;
1091 break;
1092 default:
1093 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported GTP port number");
1094 return -EINVAL;
1095 }
1096 }
1097
1098 return 0;
1099 }
1100
1101 static int
ice_parse_tunnel_attr(struct net_device * dev,struct flow_rule * rule,struct ice_tc_flower_fltr * fltr)1102 ice_parse_tunnel_attr(struct net_device *dev, struct flow_rule *rule,
1103 struct ice_tc_flower_fltr *fltr)
1104 {
1105 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers;
1106 struct flow_match_control enc_control;
1107
1108 fltr->tunnel_type = ice_tc_tun_get_type(dev);
1109 headers->l3_key.ip_proto = IPPROTO_UDP;
1110
1111 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
1112 struct flow_match_enc_keyid enc_keyid;
1113
1114 flow_rule_match_enc_keyid(rule, &enc_keyid);
1115
1116 if (!enc_keyid.mask->keyid ||
1117 enc_keyid.mask->keyid != cpu_to_be32(ICE_TC_FLOWER_MASK_32))
1118 return -EINVAL;
1119
1120 fltr->flags |= ICE_TC_FLWR_FIELD_TENANT_ID;
1121 fltr->tenant_id = enc_keyid.key->keyid;
1122 }
1123
1124 flow_rule_match_enc_control(rule, &enc_control);
1125
1126 if (enc_control.key->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1127 struct flow_match_ipv4_addrs match;
1128
1129 flow_rule_match_enc_ipv4_addrs(rule, &match);
1130 if (ice_tc_set_ipv4(&match, fltr, headers, true))
1131 return -EINVAL;
1132 } else if (enc_control.key->addr_type ==
1133 FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1134 struct flow_match_ipv6_addrs match;
1135
1136 flow_rule_match_enc_ipv6_addrs(rule, &match);
1137 if (ice_tc_set_ipv6(&match, fltr, headers, true))
1138 return -EINVAL;
1139 }
1140
1141 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) {
1142 struct flow_match_ip match;
1143
1144 flow_rule_match_enc_ip(rule, &match);
1145 ice_tc_set_tos_ttl(&match, fltr, headers, true);
1146 }
1147
1148 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS) &&
1149 fltr->tunnel_type != TNL_VXLAN && fltr->tunnel_type != TNL_GENEVE) {
1150 struct flow_match_ports match;
1151
1152 flow_rule_match_enc_ports(rule, &match);
1153
1154 if (fltr->tunnel_type != TNL_GTPU) {
1155 if (ice_tc_set_port(match, fltr, headers, true))
1156 return -EINVAL;
1157 } else {
1158 if (ice_parse_gtp_type(match, fltr))
1159 return -EINVAL;
1160 }
1161 }
1162
1163 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_OPTS)) {
1164 struct flow_match_enc_opts match;
1165
1166 flow_rule_match_enc_opts(rule, &match);
1167
1168 memcpy(&fltr->gtp_pdu_info_keys, &match.key->data[0],
1169 sizeof(struct gtp_pdu_session_info));
1170
1171 memcpy(&fltr->gtp_pdu_info_masks, &match.mask->data[0],
1172 sizeof(struct gtp_pdu_session_info));
1173
1174 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_OPTS;
1175 }
1176
1177 return 0;
1178 }
1179
1180 /**
1181 * ice_parse_cls_flower - Parse TC flower filters provided by kernel
1182 * @vsi: Pointer to the VSI
1183 * @filter_dev: Pointer to device on which filter is being added
1184 * @f: Pointer to struct flow_cls_offload
1185 * @fltr: Pointer to filter structure
1186 */
1187 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)1188 ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi,
1189 struct flow_cls_offload *f,
1190 struct ice_tc_flower_fltr *fltr)
1191 {
1192 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers;
1193 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
1194 u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0;
1195 struct flow_dissector *dissector;
1196 struct net_device *tunnel_dev;
1197
1198 dissector = rule->match.dissector;
1199
1200 if (dissector->used_keys &
1201 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
1202 BIT(FLOW_DISSECTOR_KEY_BASIC) |
1203 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
1204 BIT(FLOW_DISSECTOR_KEY_VLAN) |
1205 BIT(FLOW_DISSECTOR_KEY_CVLAN) |
1206 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
1207 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
1208 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
1209 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
1210 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
1211 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
1212 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
1213 BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) |
1214 BIT(FLOW_DISSECTOR_KEY_IP) |
1215 BIT(FLOW_DISSECTOR_KEY_ENC_IP) |
1216 BIT(FLOW_DISSECTOR_KEY_PORTS) |
1217 BIT(FLOW_DISSECTOR_KEY_PPPOE) |
1218 BIT(FLOW_DISSECTOR_KEY_L2TPV3))) {
1219 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported key used");
1220 return -EOPNOTSUPP;
1221 }
1222
1223 tunnel_dev = ice_get_tunnel_device(filter_dev, rule);
1224 if (tunnel_dev) {
1225 int err;
1226
1227 filter_dev = tunnel_dev;
1228
1229 err = ice_parse_tunnel_attr(filter_dev, rule, fltr);
1230 if (err) {
1231 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to parse TC flower tunnel attributes");
1232 return err;
1233 }
1234
1235 /* header pointers should point to the inner headers, outer
1236 * header were already set by ice_parse_tunnel_attr
1237 */
1238 headers = &fltr->inner_headers;
1239 } else if (dissector->used_keys &
1240 (BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
1241 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
1242 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
1243 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS))) {
1244 NL_SET_ERR_MSG_MOD(fltr->extack, "Tunnel key used, but device isn't a tunnel");
1245 return -EOPNOTSUPP;
1246 } else {
1247 fltr->tunnel_type = TNL_LAST;
1248 }
1249
1250 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
1251 struct flow_match_basic match;
1252
1253 flow_rule_match_basic(rule, &match);
1254
1255 n_proto_key = ntohs(match.key->n_proto);
1256 n_proto_mask = ntohs(match.mask->n_proto);
1257
1258 if (n_proto_key == ETH_P_ALL || n_proto_key == 0 ||
1259 fltr->tunnel_type == TNL_GTPU ||
1260 fltr->tunnel_type == TNL_GTPC) {
1261 n_proto_key = 0;
1262 n_proto_mask = 0;
1263 } else {
1264 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID;
1265 }
1266
1267 headers->l2_key.n_proto = cpu_to_be16(n_proto_key);
1268 headers->l2_mask.n_proto = cpu_to_be16(n_proto_mask);
1269 headers->l3_key.ip_proto = match.key->ip_proto;
1270 }
1271
1272 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
1273 struct flow_match_eth_addrs match;
1274
1275 flow_rule_match_eth_addrs(rule, &match);
1276
1277 if (!is_zero_ether_addr(match.key->dst)) {
1278 ether_addr_copy(headers->l2_key.dst_mac,
1279 match.key->dst);
1280 ether_addr_copy(headers->l2_mask.dst_mac,
1281 match.mask->dst);
1282 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC;
1283 }
1284
1285 if (!is_zero_ether_addr(match.key->src)) {
1286 ether_addr_copy(headers->l2_key.src_mac,
1287 match.key->src);
1288 ether_addr_copy(headers->l2_mask.src_mac,
1289 match.mask->src);
1290 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_MAC;
1291 }
1292 }
1293
1294 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) ||
1295 is_vlan_dev(filter_dev)) {
1296 struct flow_dissector_key_vlan mask;
1297 struct flow_dissector_key_vlan key;
1298 struct flow_match_vlan match;
1299
1300 if (is_vlan_dev(filter_dev)) {
1301 match.key = &key;
1302 match.key->vlan_id = vlan_dev_vlan_id(filter_dev);
1303 match.key->vlan_priority = 0;
1304 match.mask = &mask;
1305 memset(match.mask, 0xff, sizeof(*match.mask));
1306 match.mask->vlan_priority = 0;
1307 } else {
1308 flow_rule_match_vlan(rule, &match);
1309 }
1310
1311 if (match.mask->vlan_id) {
1312 if (match.mask->vlan_id == VLAN_VID_MASK) {
1313 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN;
1314 headers->vlan_hdr.vlan_id =
1315 cpu_to_be16(match.key->vlan_id &
1316 VLAN_VID_MASK);
1317 } else {
1318 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad VLAN mask");
1319 return -EINVAL;
1320 }
1321 }
1322
1323 if (match.mask->vlan_priority) {
1324 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN_PRIO;
1325 headers->vlan_hdr.vlan_prio =
1326 be16_encode_bits(match.key->vlan_priority,
1327 VLAN_PRIO_MASK);
1328 }
1329
1330 if (match.mask->vlan_tpid)
1331 headers->vlan_hdr.vlan_tpid = match.key->vlan_tpid;
1332 }
1333
1334 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
1335 struct flow_match_vlan match;
1336
1337 if (!ice_is_dvm_ena(&vsi->back->hw)) {
1338 NL_SET_ERR_MSG_MOD(fltr->extack, "Double VLAN mode is not enabled");
1339 return -EINVAL;
1340 }
1341
1342 flow_rule_match_cvlan(rule, &match);
1343
1344 if (match.mask->vlan_id) {
1345 if (match.mask->vlan_id == VLAN_VID_MASK) {
1346 fltr->flags |= ICE_TC_FLWR_FIELD_CVLAN;
1347 headers->cvlan_hdr.vlan_id =
1348 cpu_to_be16(match.key->vlan_id &
1349 VLAN_VID_MASK);
1350 } else {
1351 NL_SET_ERR_MSG_MOD(fltr->extack,
1352 "Bad CVLAN mask");
1353 return -EINVAL;
1354 }
1355 }
1356
1357 if (match.mask->vlan_priority) {
1358 fltr->flags |= ICE_TC_FLWR_FIELD_CVLAN_PRIO;
1359 headers->cvlan_hdr.vlan_prio =
1360 be16_encode_bits(match.key->vlan_priority,
1361 VLAN_PRIO_MASK);
1362 }
1363 }
1364
1365 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PPPOE)) {
1366 struct flow_match_pppoe match;
1367
1368 flow_rule_match_pppoe(rule, &match);
1369 n_proto_key = ice_tc_set_pppoe(&match, fltr, headers);
1370
1371 /* If ethertype equals ETH_P_PPP_SES, n_proto might be
1372 * overwritten by encapsulated protocol (ppp_proto field) or set
1373 * to 0. To correct this, flow_match_pppoe provides the type
1374 * field, which contains the actual ethertype (ETH_P_PPP_SES).
1375 */
1376 headers->l2_key.n_proto = cpu_to_be16(n_proto_key);
1377 headers->l2_mask.n_proto = cpu_to_be16(0xFFFF);
1378 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID;
1379 }
1380
1381 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
1382 struct flow_match_control match;
1383
1384 flow_rule_match_control(rule, &match);
1385
1386 addr_type = match.key->addr_type;
1387 }
1388
1389 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1390 struct flow_match_ipv4_addrs match;
1391
1392 flow_rule_match_ipv4_addrs(rule, &match);
1393 if (ice_tc_set_ipv4(&match, fltr, headers, false))
1394 return -EINVAL;
1395 }
1396
1397 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1398 struct flow_match_ipv6_addrs match;
1399
1400 flow_rule_match_ipv6_addrs(rule, &match);
1401 if (ice_tc_set_ipv6(&match, fltr, headers, false))
1402 return -EINVAL;
1403 }
1404
1405 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
1406 struct flow_match_ip match;
1407
1408 flow_rule_match_ip(rule, &match);
1409 ice_tc_set_tos_ttl(&match, fltr, headers, false);
1410 }
1411
1412 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_L2TPV3)) {
1413 struct flow_match_l2tpv3 match;
1414
1415 flow_rule_match_l2tpv3(rule, &match);
1416
1417 fltr->flags |= ICE_TC_FLWR_FIELD_L2TPV3_SESSID;
1418 headers->l2tpv3_hdr.session_id = match.key->session_id;
1419 }
1420
1421 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
1422 struct flow_match_ports match;
1423
1424 flow_rule_match_ports(rule, &match);
1425 if (ice_tc_set_port(match, fltr, headers, false))
1426 return -EINVAL;
1427 switch (headers->l3_key.ip_proto) {
1428 case IPPROTO_TCP:
1429 case IPPROTO_UDP:
1430 break;
1431 default:
1432 NL_SET_ERR_MSG_MOD(fltr->extack, "Only UDP and TCP transport are supported");
1433 return -EINVAL;
1434 }
1435 }
1436 return 0;
1437 }
1438
1439 /**
1440 * ice_add_switch_fltr - Add TC flower filters
1441 * @vsi: Pointer to VSI
1442 * @fltr: Pointer to struct ice_tc_flower_fltr
1443 *
1444 * Add filter in HW switch block
1445 */
1446 static int
ice_add_switch_fltr(struct ice_vsi * vsi,struct ice_tc_flower_fltr * fltr)1447 ice_add_switch_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
1448 {
1449 if (fltr->action.fltr_act == ICE_FWD_TO_QGRP)
1450 return -EOPNOTSUPP;
1451
1452 if (ice_is_eswitch_mode_switchdev(vsi->back))
1453 return ice_eswitch_add_tc_fltr(vsi, fltr);
1454
1455 return ice_add_tc_flower_adv_fltr(vsi, fltr);
1456 }
1457
1458 /**
1459 * ice_handle_tclass_action - Support directing to a traffic class
1460 * @vsi: Pointer to VSI
1461 * @cls_flower: Pointer to TC flower offload structure
1462 * @fltr: Pointer to TC flower filter structure
1463 *
1464 * Support directing traffic to a traffic class
1465 */
1466 static int
ice_handle_tclass_action(struct ice_vsi * vsi,struct flow_cls_offload * cls_flower,struct ice_tc_flower_fltr * fltr)1467 ice_handle_tclass_action(struct ice_vsi *vsi,
1468 struct flow_cls_offload *cls_flower,
1469 struct ice_tc_flower_fltr *fltr)
1470 {
1471 int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid);
1472 struct ice_vsi *main_vsi;
1473
1474 if (tc < 0) {
1475 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because specified destination is invalid");
1476 return -EINVAL;
1477 }
1478 if (!tc) {
1479 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of invalid destination");
1480 return -EINVAL;
1481 }
1482
1483 if (!(vsi->all_enatc & BIT(tc))) {
1484 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of non-existence destination");
1485 return -EINVAL;
1486 }
1487
1488 /* Redirect to a TC class or Queue Group */
1489 main_vsi = ice_get_main_vsi(vsi->back);
1490 if (!main_vsi || !main_vsi->netdev) {
1491 NL_SET_ERR_MSG_MOD(fltr->extack,
1492 "Unable to add filter because of invalid netdevice");
1493 return -EINVAL;
1494 }
1495
1496 if ((fltr->flags & ICE_TC_FLWR_FIELD_TENANT_ID) &&
1497 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC |
1498 ICE_TC_FLWR_FIELD_SRC_MAC))) {
1499 NL_SET_ERR_MSG_MOD(fltr->extack,
1500 "Unable to add filter because filter using tunnel key and inner MAC is unsupported combination");
1501 return -EOPNOTSUPP;
1502 }
1503
1504 /* For ADQ, filter must include dest MAC address, otherwise unwanted
1505 * packets with unrelated MAC address get delivered to ADQ VSIs as long
1506 * as remaining filter criteria is satisfied such as dest IP address
1507 * and dest/src L4 port. Following code is trying to handle:
1508 * 1. For non-tunnel, if user specify MAC addresses, use them (means
1509 * this code won't do anything
1510 * 2. For non-tunnel, if user didn't specify MAC address, add implicit
1511 * dest MAC to be lower netdev's active unicast MAC address
1512 * 3. For tunnel, as of now TC-filter through flower classifier doesn't
1513 * have provision for user to specify outer DMAC, hence driver to
1514 * implicitly add outer dest MAC to be lower netdev's active unicast
1515 * MAC address.
1516 */
1517 if (fltr->tunnel_type != TNL_LAST &&
1518 !(fltr->flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC))
1519 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DST_MAC;
1520
1521 if (fltr->tunnel_type == TNL_LAST &&
1522 !(fltr->flags & ICE_TC_FLWR_FIELD_DST_MAC))
1523 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC;
1524
1525 if (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC |
1526 ICE_TC_FLWR_FIELD_ENC_DST_MAC)) {
1527 ether_addr_copy(fltr->outer_headers.l2_key.dst_mac,
1528 vsi->netdev->dev_addr);
1529 eth_broadcast_addr(fltr->outer_headers.l2_mask.dst_mac);
1530 }
1531
1532 /* validate specified dest MAC address, make sure either it belongs to
1533 * lower netdev or any of MACVLAN. MACVLANs MAC address are added as
1534 * unicast MAC filter destined to main VSI.
1535 */
1536 if (!ice_mac_fltr_exist(&main_vsi->back->hw,
1537 fltr->outer_headers.l2_key.dst_mac,
1538 main_vsi->idx)) {
1539 NL_SET_ERR_MSG_MOD(fltr->extack,
1540 "Unable to add filter because legacy MAC filter for specified destination doesn't exist");
1541 return -EINVAL;
1542 }
1543
1544 /* Make sure VLAN is already added to main VSI, before allowing ADQ to
1545 * add a VLAN based filter such as MAC + VLAN + L4 port.
1546 */
1547 if (fltr->flags & ICE_TC_FLWR_FIELD_VLAN) {
1548 u16 vlan_id = be16_to_cpu(fltr->outer_headers.vlan_hdr.vlan_id);
1549
1550 if (!ice_vlan_fltr_exist(&main_vsi->back->hw, vlan_id,
1551 main_vsi->idx)) {
1552 NL_SET_ERR_MSG_MOD(fltr->extack,
1553 "Unable to add filter because legacy VLAN filter for specified destination doesn't exist");
1554 return -EINVAL;
1555 }
1556 }
1557 fltr->action.fltr_act = ICE_FWD_TO_VSI;
1558 fltr->action.tc_class = tc;
1559
1560 return 0;
1561 }
1562
1563 /**
1564 * ice_parse_tc_flower_actions - Parse the actions for a TC filter
1565 * @vsi: Pointer to VSI
1566 * @cls_flower: Pointer to TC flower offload structure
1567 * @fltr: Pointer to TC flower filter structure
1568 *
1569 * Parse the actions for a TC filter
1570 */
1571 static int
ice_parse_tc_flower_actions(struct ice_vsi * vsi,struct flow_cls_offload * cls_flower,struct ice_tc_flower_fltr * fltr)1572 ice_parse_tc_flower_actions(struct ice_vsi *vsi,
1573 struct flow_cls_offload *cls_flower,
1574 struct ice_tc_flower_fltr *fltr)
1575 {
1576 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower);
1577 struct flow_action *flow_action = &rule->action;
1578 struct flow_action_entry *act;
1579 int i;
1580
1581 if (cls_flower->classid)
1582 return ice_handle_tclass_action(vsi, cls_flower, fltr);
1583
1584 if (!flow_action_has_entries(flow_action))
1585 return -EINVAL;
1586
1587 flow_action_for_each(i, act, flow_action) {
1588 if (ice_is_eswitch_mode_switchdev(vsi->back)) {
1589 int err = ice_eswitch_tc_parse_action(fltr, act);
1590
1591 if (err)
1592 return err;
1593 continue;
1594 }
1595 /* Allow only one rule per filter */
1596
1597 /* Drop action */
1598 if (act->id == FLOW_ACTION_DROP) {
1599 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action DROP");
1600 return -EINVAL;
1601 }
1602 fltr->action.fltr_act = ICE_FWD_TO_VSI;
1603 }
1604 return 0;
1605 }
1606
1607 /**
1608 * ice_del_tc_fltr - deletes a filter from HW table
1609 * @vsi: Pointer to VSI
1610 * @fltr: Pointer to struct ice_tc_flower_fltr
1611 *
1612 * This function deletes a filter from HW table and manages book-keeping
1613 */
ice_del_tc_fltr(struct ice_vsi * vsi,struct ice_tc_flower_fltr * fltr)1614 static int ice_del_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
1615 {
1616 struct ice_rule_query_data rule_rem;
1617 struct ice_pf *pf = vsi->back;
1618 int err;
1619
1620 rule_rem.rid = fltr->rid;
1621 rule_rem.rule_id = fltr->rule_id;
1622 rule_rem.vsi_handle = fltr->dest_id;
1623 err = ice_rem_adv_rule_by_id(&pf->hw, &rule_rem);
1624 if (err) {
1625 if (err == -ENOENT) {
1626 NL_SET_ERR_MSG_MOD(fltr->extack, "Filter does not exist");
1627 return -ENOENT;
1628 }
1629 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to delete TC flower filter");
1630 return -EIO;
1631 }
1632
1633 /* update advanced switch filter count for destination
1634 * VSI if filter destination was VSI
1635 */
1636 if (fltr->dest_vsi) {
1637 if (fltr->dest_vsi->type == ICE_VSI_CHNL) {
1638 fltr->dest_vsi->num_chnl_fltr--;
1639
1640 /* keeps track of channel filters for PF VSI */
1641 if (vsi->type == ICE_VSI_PF &&
1642 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC |
1643 ICE_TC_FLWR_FIELD_ENC_DST_MAC)))
1644 pf->num_dmac_chnl_fltrs--;
1645 }
1646 }
1647 return 0;
1648 }
1649
1650 /**
1651 * ice_add_tc_fltr - adds a TC flower filter
1652 * @netdev: Pointer to netdev
1653 * @vsi: Pointer to VSI
1654 * @f: Pointer to flower offload structure
1655 * @__fltr: Pointer to struct ice_tc_flower_fltr
1656 *
1657 * This function parses TC-flower input fields, parses action,
1658 * and adds a filter.
1659 */
1660 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)1661 ice_add_tc_fltr(struct net_device *netdev, struct ice_vsi *vsi,
1662 struct flow_cls_offload *f,
1663 struct ice_tc_flower_fltr **__fltr)
1664 {
1665 struct ice_tc_flower_fltr *fltr;
1666 int err;
1667
1668 /* by default, set output to be INVALID */
1669 *__fltr = NULL;
1670
1671 fltr = kzalloc(sizeof(*fltr), GFP_KERNEL);
1672 if (!fltr)
1673 return -ENOMEM;
1674
1675 fltr->cookie = f->cookie;
1676 fltr->extack = f->common.extack;
1677 fltr->src_vsi = vsi;
1678 INIT_HLIST_NODE(&fltr->tc_flower_node);
1679
1680 err = ice_parse_cls_flower(netdev, vsi, f, fltr);
1681 if (err < 0)
1682 goto err;
1683
1684 err = ice_parse_tc_flower_actions(vsi, f, fltr);
1685 if (err < 0)
1686 goto err;
1687
1688 err = ice_add_switch_fltr(vsi, fltr);
1689 if (err < 0)
1690 goto err;
1691
1692 /* return the newly created filter */
1693 *__fltr = fltr;
1694
1695 return 0;
1696 err:
1697 kfree(fltr);
1698 return err;
1699 }
1700
1701 /**
1702 * ice_find_tc_flower_fltr - Find the TC flower filter in the list
1703 * @pf: Pointer to PF
1704 * @cookie: filter specific cookie
1705 */
1706 static struct ice_tc_flower_fltr *
ice_find_tc_flower_fltr(struct ice_pf * pf,unsigned long cookie)1707 ice_find_tc_flower_fltr(struct ice_pf *pf, unsigned long cookie)
1708 {
1709 struct ice_tc_flower_fltr *fltr;
1710
1711 hlist_for_each_entry(fltr, &pf->tc_flower_fltr_list, tc_flower_node)
1712 if (cookie == fltr->cookie)
1713 return fltr;
1714
1715 return NULL;
1716 }
1717
1718 /**
1719 * ice_add_cls_flower - add TC flower filters
1720 * @netdev: Pointer to filter device
1721 * @vsi: Pointer to VSI
1722 * @cls_flower: Pointer to flower offload structure
1723 */
1724 int
ice_add_cls_flower(struct net_device * netdev,struct ice_vsi * vsi,struct flow_cls_offload * cls_flower)1725 ice_add_cls_flower(struct net_device *netdev, struct ice_vsi *vsi,
1726 struct flow_cls_offload *cls_flower)
1727 {
1728 struct netlink_ext_ack *extack = cls_flower->common.extack;
1729 struct net_device *vsi_netdev = vsi->netdev;
1730 struct ice_tc_flower_fltr *fltr;
1731 struct ice_pf *pf = vsi->back;
1732 int err;
1733
1734 if (ice_is_reset_in_progress(pf->state))
1735 return -EBUSY;
1736 if (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags))
1737 return -EINVAL;
1738
1739 if (ice_is_port_repr_netdev(netdev))
1740 vsi_netdev = netdev;
1741
1742 if (!(vsi_netdev->features & NETIF_F_HW_TC) &&
1743 !test_bit(ICE_FLAG_CLS_FLOWER, pf->flags)) {
1744 /* Based on TC indirect notifications from kernel, all ice
1745 * devices get an instance of rule from higher level device.
1746 * Avoid triggering explicit error in this case.
1747 */
1748 if (netdev == vsi_netdev)
1749 NL_SET_ERR_MSG_MOD(extack, "can't apply TC flower filters, turn ON hw-tc-offload and try again");
1750 return -EINVAL;
1751 }
1752
1753 /* avoid duplicate entries, if exists - return error */
1754 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie);
1755 if (fltr) {
1756 NL_SET_ERR_MSG_MOD(extack, "filter cookie already exists, ignoring");
1757 return -EEXIST;
1758 }
1759
1760 /* prep and add TC-flower filter in HW */
1761 err = ice_add_tc_fltr(netdev, vsi, cls_flower, &fltr);
1762 if (err)
1763 return err;
1764
1765 /* add filter into an ordered list */
1766 hlist_add_head(&fltr->tc_flower_node, &pf->tc_flower_fltr_list);
1767 return 0;
1768 }
1769
1770 /**
1771 * ice_del_cls_flower - delete TC flower filters
1772 * @vsi: Pointer to VSI
1773 * @cls_flower: Pointer to struct flow_cls_offload
1774 */
1775 int
ice_del_cls_flower(struct ice_vsi * vsi,struct flow_cls_offload * cls_flower)1776 ice_del_cls_flower(struct ice_vsi *vsi, struct flow_cls_offload *cls_flower)
1777 {
1778 struct ice_tc_flower_fltr *fltr;
1779 struct ice_pf *pf = vsi->back;
1780 int err;
1781
1782 /* find filter */
1783 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie);
1784 if (!fltr) {
1785 if (!test_bit(ICE_FLAG_TC_MQPRIO, pf->flags) &&
1786 hlist_empty(&pf->tc_flower_fltr_list))
1787 return 0;
1788
1789 NL_SET_ERR_MSG_MOD(cls_flower->common.extack, "failed to delete TC flower filter because unable to find it");
1790 return -EINVAL;
1791 }
1792
1793 fltr->extack = cls_flower->common.extack;
1794 /* delete filter from HW */
1795 err = ice_del_tc_fltr(vsi, fltr);
1796 if (err)
1797 return err;
1798
1799 /* delete filter from an ordered list */
1800 hlist_del(&fltr->tc_flower_node);
1801
1802 /* free the filter node */
1803 kfree(fltr);
1804
1805 return 0;
1806 }
1807
1808 /**
1809 * ice_replay_tc_fltrs - replay TC filters
1810 * @pf: pointer to PF struct
1811 */
ice_replay_tc_fltrs(struct ice_pf * pf)1812 void ice_replay_tc_fltrs(struct ice_pf *pf)
1813 {
1814 struct ice_tc_flower_fltr *fltr;
1815 struct hlist_node *node;
1816
1817 hlist_for_each_entry_safe(fltr, node,
1818 &pf->tc_flower_fltr_list,
1819 tc_flower_node) {
1820 fltr->extack = NULL;
1821 ice_add_switch_fltr(fltr->src_vsi, fltr);
1822 }
1823 }
1824