1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2020, Intel Corporation. */
3
4 /* flow director ethtool support for iavf */
5
6 #include <linux/bitfield.h>
7 #include "iavf.h"
8
9 #define GTPU_PORT 2152
10 #define NAT_T_ESP_PORT 4500
11 #define PFCP_PORT 8805
12
13 static const struct in6_addr ipv6_addr_full_mask = {
14 .in6_u = {
15 .u6_addr8 = {
16 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
17 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
18 }
19 }
20 };
21
22 static const struct in6_addr ipv6_addr_zero_mask = {
23 .in6_u = {
24 .u6_addr8 = {
25 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
26 }
27 }
28 };
29
30 /**
31 * iavf_validate_fdir_fltr_masks - validate Flow Director filter fields masks
32 * @adapter: pointer to the VF adapter structure
33 * @fltr: Flow Director filter data structure
34 *
35 * Returns 0 if all masks of packet fields are either full or empty. Returns
36 * error on at least one partial mask.
37 */
iavf_validate_fdir_fltr_masks(struct iavf_adapter * adapter,struct iavf_fdir_fltr * fltr)38 int iavf_validate_fdir_fltr_masks(struct iavf_adapter *adapter,
39 struct iavf_fdir_fltr *fltr)
40 {
41 if (fltr->eth_mask.etype && fltr->eth_mask.etype != htons(U16_MAX))
42 goto partial_mask;
43
44 if (fltr->ip_ver == 4) {
45 if (fltr->ip_mask.v4_addrs.src_ip &&
46 fltr->ip_mask.v4_addrs.src_ip != htonl(U32_MAX))
47 goto partial_mask;
48
49 if (fltr->ip_mask.v4_addrs.dst_ip &&
50 fltr->ip_mask.v4_addrs.dst_ip != htonl(U32_MAX))
51 goto partial_mask;
52
53 if (fltr->ip_mask.tos && fltr->ip_mask.tos != U8_MAX)
54 goto partial_mask;
55 } else if (fltr->ip_ver == 6) {
56 if (memcmp(&fltr->ip_mask.v6_addrs.src_ip, &ipv6_addr_zero_mask,
57 sizeof(struct in6_addr)) &&
58 memcmp(&fltr->ip_mask.v6_addrs.src_ip, &ipv6_addr_full_mask,
59 sizeof(struct in6_addr)))
60 goto partial_mask;
61
62 if (memcmp(&fltr->ip_mask.v6_addrs.dst_ip, &ipv6_addr_zero_mask,
63 sizeof(struct in6_addr)) &&
64 memcmp(&fltr->ip_mask.v6_addrs.dst_ip, &ipv6_addr_full_mask,
65 sizeof(struct in6_addr)))
66 goto partial_mask;
67
68 if (fltr->ip_mask.tclass && fltr->ip_mask.tclass != U8_MAX)
69 goto partial_mask;
70 }
71
72 if (fltr->ip_mask.proto && fltr->ip_mask.proto != U8_MAX)
73 goto partial_mask;
74
75 if (fltr->ip_mask.src_port && fltr->ip_mask.src_port != htons(U16_MAX))
76 goto partial_mask;
77
78 if (fltr->ip_mask.dst_port && fltr->ip_mask.dst_port != htons(U16_MAX))
79 goto partial_mask;
80
81 if (fltr->ip_mask.spi && fltr->ip_mask.spi != htonl(U32_MAX))
82 goto partial_mask;
83
84 if (fltr->ip_mask.l4_header &&
85 fltr->ip_mask.l4_header != htonl(U32_MAX))
86 goto partial_mask;
87
88 return 0;
89
90 partial_mask:
91 dev_err(&adapter->pdev->dev, "Failed to add Flow Director filter, partial masks are not supported\n");
92 return -EOPNOTSUPP;
93 }
94
95 /**
96 * iavf_pkt_udp_no_pay_len - the length of UDP packet without payload
97 * @fltr: Flow Director filter data structure
98 */
iavf_pkt_udp_no_pay_len(struct iavf_fdir_fltr * fltr)99 static u16 iavf_pkt_udp_no_pay_len(struct iavf_fdir_fltr *fltr)
100 {
101 return sizeof(struct ethhdr) +
102 (fltr->ip_ver == 4 ? sizeof(struct iphdr) : sizeof(struct ipv6hdr)) +
103 sizeof(struct udphdr);
104 }
105
106 /**
107 * iavf_fill_fdir_gtpu_hdr - fill the GTP-U protocol header
108 * @fltr: Flow Director filter data structure
109 * @proto_hdrs: Flow Director protocol headers data structure
110 *
111 * Returns 0 if the GTP-U protocol header is set successfully
112 */
113 static int
iavf_fill_fdir_gtpu_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)114 iavf_fill_fdir_gtpu_hdr(struct iavf_fdir_fltr *fltr,
115 struct virtchnl_proto_hdrs *proto_hdrs)
116 {
117 struct virtchnl_proto_hdr *uhdr = &proto_hdrs->proto_hdr[proto_hdrs->count - 1];
118 struct virtchnl_proto_hdr *ghdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
119 struct virtchnl_proto_hdr *ehdr = NULL; /* Extension Header if it exists */
120 u16 adj_offs, hdr_offs;
121 int i;
122
123 VIRTCHNL_SET_PROTO_HDR_TYPE(ghdr, GTPU_IP);
124
125 adj_offs = iavf_pkt_udp_no_pay_len(fltr);
126
127 for (i = 0; i < fltr->flex_cnt; i++) {
128 #define IAVF_GTPU_HDR_TEID_OFFS0 4
129 #define IAVF_GTPU_HDR_TEID_OFFS1 6
130 #define IAVF_GTPU_HDR_N_PDU_AND_NEXT_EXTHDR_OFFS 10
131 #define IAVF_GTPU_HDR_NEXT_EXTHDR_TYPE_MASK 0x00FF /* skip N_PDU */
132 /* PDU Session Container Extension Header (PSC) */
133 #define IAVF_GTPU_PSC_EXTHDR_TYPE 0x85
134 #define IAVF_GTPU_HDR_PSC_PDU_TYPE_AND_QFI_OFFS 13
135 #define IAVF_GTPU_HDR_PSC_PDU_QFI_MASK 0x3F /* skip Type */
136 #define IAVF_GTPU_EH_QFI_IDX 1
137
138 if (fltr->flex_words[i].offset < adj_offs)
139 return -EINVAL;
140
141 hdr_offs = fltr->flex_words[i].offset - adj_offs;
142
143 switch (hdr_offs) {
144 case IAVF_GTPU_HDR_TEID_OFFS0:
145 case IAVF_GTPU_HDR_TEID_OFFS1: {
146 __be16 *pay_word = (__be16 *)ghdr->buffer;
147
148 pay_word[hdr_offs >> 1] = htons(fltr->flex_words[i].word);
149 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(ghdr, GTPU_IP, TEID);
150 }
151 break;
152 case IAVF_GTPU_HDR_N_PDU_AND_NEXT_EXTHDR_OFFS:
153 if ((fltr->flex_words[i].word &
154 IAVF_GTPU_HDR_NEXT_EXTHDR_TYPE_MASK) !=
155 IAVF_GTPU_PSC_EXTHDR_TYPE)
156 return -EOPNOTSUPP;
157 if (!ehdr)
158 ehdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
159 VIRTCHNL_SET_PROTO_HDR_TYPE(ehdr, GTPU_EH);
160 break;
161 case IAVF_GTPU_HDR_PSC_PDU_TYPE_AND_QFI_OFFS:
162 if (!ehdr)
163 return -EINVAL;
164 ehdr->buffer[IAVF_GTPU_EH_QFI_IDX] =
165 fltr->flex_words[i].word &
166 IAVF_GTPU_HDR_PSC_PDU_QFI_MASK;
167 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(ehdr, GTPU_EH, QFI);
168 break;
169 default:
170 return -EINVAL;
171 }
172 }
173
174 uhdr->field_selector = 0; /* The PF ignores the UDP header fields */
175
176 return 0;
177 }
178
179 /**
180 * iavf_fill_fdir_pfcp_hdr - fill the PFCP protocol header
181 * @fltr: Flow Director filter data structure
182 * @proto_hdrs: Flow Director protocol headers data structure
183 *
184 * Returns 0 if the PFCP protocol header is set successfully
185 */
186 static int
iavf_fill_fdir_pfcp_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)187 iavf_fill_fdir_pfcp_hdr(struct iavf_fdir_fltr *fltr,
188 struct virtchnl_proto_hdrs *proto_hdrs)
189 {
190 struct virtchnl_proto_hdr *uhdr = &proto_hdrs->proto_hdr[proto_hdrs->count - 1];
191 struct virtchnl_proto_hdr *hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
192 u16 adj_offs, hdr_offs;
193 int i;
194
195 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, PFCP);
196
197 adj_offs = iavf_pkt_udp_no_pay_len(fltr);
198
199 for (i = 0; i < fltr->flex_cnt; i++) {
200 #define IAVF_PFCP_HDR_SFIELD_AND_MSG_TYPE_OFFS 0
201 if (fltr->flex_words[i].offset < adj_offs)
202 return -EINVAL;
203
204 hdr_offs = fltr->flex_words[i].offset - adj_offs;
205
206 switch (hdr_offs) {
207 case IAVF_PFCP_HDR_SFIELD_AND_MSG_TYPE_OFFS:
208 hdr->buffer[0] = (fltr->flex_words[i].word >> 8) & 0xff;
209 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, PFCP, S_FIELD);
210 break;
211 default:
212 return -EINVAL;
213 }
214 }
215
216 uhdr->field_selector = 0; /* The PF ignores the UDP header fields */
217
218 return 0;
219 }
220
221 /**
222 * iavf_fill_fdir_nat_t_esp_hdr - fill the NAT-T-ESP protocol header
223 * @fltr: Flow Director filter data structure
224 * @proto_hdrs: Flow Director protocol headers data structure
225 *
226 * Returns 0 if the NAT-T-ESP protocol header is set successfully
227 */
228 static int
iavf_fill_fdir_nat_t_esp_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)229 iavf_fill_fdir_nat_t_esp_hdr(struct iavf_fdir_fltr *fltr,
230 struct virtchnl_proto_hdrs *proto_hdrs)
231 {
232 struct virtchnl_proto_hdr *uhdr = &proto_hdrs->proto_hdr[proto_hdrs->count - 1];
233 struct virtchnl_proto_hdr *hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
234 u16 adj_offs, hdr_offs;
235 u32 spi = 0;
236 int i;
237
238 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, ESP);
239
240 adj_offs = iavf_pkt_udp_no_pay_len(fltr);
241
242 for (i = 0; i < fltr->flex_cnt; i++) {
243 #define IAVF_NAT_T_ESP_SPI_OFFS0 0
244 #define IAVF_NAT_T_ESP_SPI_OFFS1 2
245 if (fltr->flex_words[i].offset < adj_offs)
246 return -EINVAL;
247
248 hdr_offs = fltr->flex_words[i].offset - adj_offs;
249
250 switch (hdr_offs) {
251 case IAVF_NAT_T_ESP_SPI_OFFS0:
252 spi |= fltr->flex_words[i].word << 16;
253 break;
254 case IAVF_NAT_T_ESP_SPI_OFFS1:
255 spi |= fltr->flex_words[i].word;
256 break;
257 default:
258 return -EINVAL;
259 }
260 }
261
262 if (!spi)
263 return -EOPNOTSUPP; /* Not support IKE Header Format with SPI 0 */
264
265 *(__be32 *)hdr->buffer = htonl(spi);
266 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, ESP, SPI);
267
268 uhdr->field_selector = 0; /* The PF ignores the UDP header fields */
269
270 return 0;
271 }
272
273 /**
274 * iavf_fill_fdir_udp_flex_pay_hdr - fill the UDP payload header
275 * @fltr: Flow Director filter data structure
276 * @proto_hdrs: Flow Director protocol headers data structure
277 *
278 * Returns 0 if the UDP payload defined protocol header is set successfully
279 */
280 static int
iavf_fill_fdir_udp_flex_pay_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)281 iavf_fill_fdir_udp_flex_pay_hdr(struct iavf_fdir_fltr *fltr,
282 struct virtchnl_proto_hdrs *proto_hdrs)
283 {
284 int err;
285
286 switch (ntohs(fltr->ip_data.dst_port)) {
287 case GTPU_PORT:
288 err = iavf_fill_fdir_gtpu_hdr(fltr, proto_hdrs);
289 break;
290 case NAT_T_ESP_PORT:
291 err = iavf_fill_fdir_nat_t_esp_hdr(fltr, proto_hdrs);
292 break;
293 case PFCP_PORT:
294 err = iavf_fill_fdir_pfcp_hdr(fltr, proto_hdrs);
295 break;
296 default:
297 err = -EOPNOTSUPP;
298 break;
299 }
300
301 return err;
302 }
303
304 /**
305 * iavf_fill_fdir_ip4_hdr - fill the IPv4 protocol header
306 * @fltr: Flow Director filter data structure
307 * @proto_hdrs: Flow Director protocol headers data structure
308 *
309 * Returns 0 if the IPv4 protocol header is set successfully
310 */
311 static int
iavf_fill_fdir_ip4_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)312 iavf_fill_fdir_ip4_hdr(struct iavf_fdir_fltr *fltr,
313 struct virtchnl_proto_hdrs *proto_hdrs)
314 {
315 struct virtchnl_proto_hdr *hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
316 struct iphdr *iph = (struct iphdr *)hdr->buffer;
317
318 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, IPV4);
319
320 if (fltr->ip_mask.tos == U8_MAX) {
321 iph->tos = fltr->ip_data.tos;
322 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV4, DSCP);
323 }
324
325 if (fltr->ip_mask.proto == U8_MAX) {
326 iph->protocol = fltr->ip_data.proto;
327 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV4, PROT);
328 }
329
330 if (fltr->ip_mask.v4_addrs.src_ip == htonl(U32_MAX)) {
331 iph->saddr = fltr->ip_data.v4_addrs.src_ip;
332 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV4, SRC);
333 }
334
335 if (fltr->ip_mask.v4_addrs.dst_ip == htonl(U32_MAX)) {
336 iph->daddr = fltr->ip_data.v4_addrs.dst_ip;
337 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV4, DST);
338 }
339
340 return 0;
341 }
342
343 /**
344 * iavf_fill_fdir_ip6_hdr - fill the IPv6 protocol header
345 * @fltr: Flow Director filter data structure
346 * @proto_hdrs: Flow Director protocol headers data structure
347 *
348 * Returns 0 if the IPv6 protocol header is set successfully
349 */
350 static int
iavf_fill_fdir_ip6_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)351 iavf_fill_fdir_ip6_hdr(struct iavf_fdir_fltr *fltr,
352 struct virtchnl_proto_hdrs *proto_hdrs)
353 {
354 struct virtchnl_proto_hdr *hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
355 struct ipv6hdr *iph = (struct ipv6hdr *)hdr->buffer;
356
357 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, IPV6);
358
359 if (fltr->ip_mask.tclass == U8_MAX) {
360 iph->priority = (fltr->ip_data.tclass >> 4) & 0xF;
361 iph->flow_lbl[0] = FIELD_PREP(0xF0, fltr->ip_data.tclass);
362 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, TC);
363 }
364
365 if (fltr->ip_mask.proto == U8_MAX) {
366 iph->nexthdr = fltr->ip_data.proto;
367 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, PROT);
368 }
369
370 if (!memcmp(&fltr->ip_mask.v6_addrs.src_ip, &ipv6_addr_full_mask,
371 sizeof(struct in6_addr))) {
372 memcpy(&iph->saddr, &fltr->ip_data.v6_addrs.src_ip,
373 sizeof(struct in6_addr));
374 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, SRC);
375 }
376
377 if (!memcmp(&fltr->ip_mask.v6_addrs.dst_ip, &ipv6_addr_full_mask,
378 sizeof(struct in6_addr))) {
379 memcpy(&iph->daddr, &fltr->ip_data.v6_addrs.dst_ip,
380 sizeof(struct in6_addr));
381 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, DST);
382 }
383
384 return 0;
385 }
386
387 /**
388 * iavf_fill_fdir_tcp_hdr - fill the TCP protocol header
389 * @fltr: Flow Director filter data structure
390 * @proto_hdrs: Flow Director protocol headers data structure
391 *
392 * Returns 0 if the TCP protocol header is set successfully
393 */
394 static int
iavf_fill_fdir_tcp_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)395 iavf_fill_fdir_tcp_hdr(struct iavf_fdir_fltr *fltr,
396 struct virtchnl_proto_hdrs *proto_hdrs)
397 {
398 struct virtchnl_proto_hdr *hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
399 struct tcphdr *tcph = (struct tcphdr *)hdr->buffer;
400
401 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, TCP);
402
403 if (fltr->ip_mask.src_port == htons(U16_MAX)) {
404 tcph->source = fltr->ip_data.src_port;
405 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, TCP, SRC_PORT);
406 }
407
408 if (fltr->ip_mask.dst_port == htons(U16_MAX)) {
409 tcph->dest = fltr->ip_data.dst_port;
410 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, TCP, DST_PORT);
411 }
412
413 return 0;
414 }
415
416 /**
417 * iavf_fill_fdir_udp_hdr - fill the UDP protocol header
418 * @fltr: Flow Director filter data structure
419 * @proto_hdrs: Flow Director protocol headers data structure
420 *
421 * Returns 0 if the UDP protocol header is set successfully
422 */
423 static int
iavf_fill_fdir_udp_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)424 iavf_fill_fdir_udp_hdr(struct iavf_fdir_fltr *fltr,
425 struct virtchnl_proto_hdrs *proto_hdrs)
426 {
427 struct virtchnl_proto_hdr *hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
428 struct udphdr *udph = (struct udphdr *)hdr->buffer;
429
430 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, UDP);
431
432 if (fltr->ip_mask.src_port == htons(U16_MAX)) {
433 udph->source = fltr->ip_data.src_port;
434 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, UDP, SRC_PORT);
435 }
436
437 if (fltr->ip_mask.dst_port == htons(U16_MAX)) {
438 udph->dest = fltr->ip_data.dst_port;
439 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, UDP, DST_PORT);
440 }
441
442 if (!fltr->flex_cnt)
443 return 0;
444
445 return iavf_fill_fdir_udp_flex_pay_hdr(fltr, proto_hdrs);
446 }
447
448 /**
449 * iavf_fill_fdir_sctp_hdr - fill the SCTP protocol header
450 * @fltr: Flow Director filter data structure
451 * @proto_hdrs: Flow Director protocol headers data structure
452 *
453 * Returns 0 if the SCTP protocol header is set successfully
454 */
455 static int
iavf_fill_fdir_sctp_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)456 iavf_fill_fdir_sctp_hdr(struct iavf_fdir_fltr *fltr,
457 struct virtchnl_proto_hdrs *proto_hdrs)
458 {
459 struct virtchnl_proto_hdr *hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
460 struct sctphdr *sctph = (struct sctphdr *)hdr->buffer;
461
462 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, SCTP);
463
464 if (fltr->ip_mask.src_port == htons(U16_MAX)) {
465 sctph->source = fltr->ip_data.src_port;
466 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, SCTP, SRC_PORT);
467 }
468
469 if (fltr->ip_mask.dst_port == htons(U16_MAX)) {
470 sctph->dest = fltr->ip_data.dst_port;
471 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, SCTP, DST_PORT);
472 }
473
474 return 0;
475 }
476
477 /**
478 * iavf_fill_fdir_ah_hdr - fill the AH protocol header
479 * @fltr: Flow Director filter data structure
480 * @proto_hdrs: Flow Director protocol headers data structure
481 *
482 * Returns 0 if the AH protocol header is set successfully
483 */
484 static int
iavf_fill_fdir_ah_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)485 iavf_fill_fdir_ah_hdr(struct iavf_fdir_fltr *fltr,
486 struct virtchnl_proto_hdrs *proto_hdrs)
487 {
488 struct virtchnl_proto_hdr *hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
489 struct ip_auth_hdr *ah = (struct ip_auth_hdr *)hdr->buffer;
490
491 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, AH);
492
493 if (fltr->ip_mask.spi == htonl(U32_MAX)) {
494 ah->spi = fltr->ip_data.spi;
495 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, AH, SPI);
496 }
497
498 return 0;
499 }
500
501 /**
502 * iavf_fill_fdir_esp_hdr - fill the ESP protocol header
503 * @fltr: Flow Director filter data structure
504 * @proto_hdrs: Flow Director protocol headers data structure
505 *
506 * Returns 0 if the ESP protocol header is set successfully
507 */
508 static int
iavf_fill_fdir_esp_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)509 iavf_fill_fdir_esp_hdr(struct iavf_fdir_fltr *fltr,
510 struct virtchnl_proto_hdrs *proto_hdrs)
511 {
512 struct virtchnl_proto_hdr *hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
513 struct ip_esp_hdr *esph = (struct ip_esp_hdr *)hdr->buffer;
514
515 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, ESP);
516
517 if (fltr->ip_mask.spi == htonl(U32_MAX)) {
518 esph->spi = fltr->ip_data.spi;
519 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, ESP, SPI);
520 }
521
522 return 0;
523 }
524
525 /**
526 * iavf_fill_fdir_l4_hdr - fill the L4 protocol header
527 * @fltr: Flow Director filter data structure
528 * @proto_hdrs: Flow Director protocol headers data structure
529 *
530 * Returns 0 if the L4 protocol header is set successfully
531 */
532 static int
iavf_fill_fdir_l4_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)533 iavf_fill_fdir_l4_hdr(struct iavf_fdir_fltr *fltr,
534 struct virtchnl_proto_hdrs *proto_hdrs)
535 {
536 struct virtchnl_proto_hdr *hdr;
537 __be32 *l4_4_data;
538
539 if (!fltr->ip_mask.proto) /* IPv4/IPv6 header only */
540 return 0;
541
542 hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
543 l4_4_data = (__be32 *)hdr->buffer;
544
545 /* L2TPv3 over IP with 'Session ID' */
546 if (fltr->ip_data.proto == 115 && fltr->ip_mask.l4_header == htonl(U32_MAX)) {
547 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, L2TPV3);
548 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, L2TPV3, SESS_ID);
549
550 *l4_4_data = fltr->ip_data.l4_header;
551 } else {
552 return -EOPNOTSUPP;
553 }
554
555 return 0;
556 }
557
558 /**
559 * iavf_fill_fdir_eth_hdr - fill the Ethernet protocol header
560 * @fltr: Flow Director filter data structure
561 * @proto_hdrs: Flow Director protocol headers data structure
562 *
563 * Returns 0 if the Ethernet protocol header is set successfully
564 */
565 static int
iavf_fill_fdir_eth_hdr(struct iavf_fdir_fltr * fltr,struct virtchnl_proto_hdrs * proto_hdrs)566 iavf_fill_fdir_eth_hdr(struct iavf_fdir_fltr *fltr,
567 struct virtchnl_proto_hdrs *proto_hdrs)
568 {
569 struct virtchnl_proto_hdr *hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
570 struct ethhdr *ehdr = (struct ethhdr *)hdr->buffer;
571
572 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, ETH);
573
574 if (fltr->eth_mask.etype == htons(U16_MAX)) {
575 if (fltr->eth_data.etype == htons(ETH_P_IP) ||
576 fltr->eth_data.etype == htons(ETH_P_IPV6))
577 return -EOPNOTSUPP;
578
579 ehdr->h_proto = fltr->eth_data.etype;
580 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, ETH, ETHERTYPE);
581 }
582
583 return 0;
584 }
585
586 /**
587 * iavf_fill_fdir_add_msg - fill the Flow Director filter into virtchnl message
588 * @adapter: pointer to the VF adapter structure
589 * @fltr: Flow Director filter data structure
590 *
591 * Returns 0 if the add Flow Director virtchnl message is filled successfully
592 */
iavf_fill_fdir_add_msg(struct iavf_adapter * adapter,struct iavf_fdir_fltr * fltr)593 int iavf_fill_fdir_add_msg(struct iavf_adapter *adapter, struct iavf_fdir_fltr *fltr)
594 {
595 struct virtchnl_fdir_add *vc_msg = &fltr->vc_add_msg;
596 struct virtchnl_proto_hdrs *proto_hdrs;
597 int err;
598
599 proto_hdrs = &vc_msg->rule_cfg.proto_hdrs;
600
601 err = iavf_fill_fdir_eth_hdr(fltr, proto_hdrs); /* L2 always exists */
602 if (err)
603 return err;
604
605 switch (fltr->flow_type) {
606 case IAVF_FDIR_FLOW_IPV4_TCP:
607 err = iavf_fill_fdir_ip4_hdr(fltr, proto_hdrs) |
608 iavf_fill_fdir_tcp_hdr(fltr, proto_hdrs);
609 break;
610 case IAVF_FDIR_FLOW_IPV4_UDP:
611 err = iavf_fill_fdir_ip4_hdr(fltr, proto_hdrs) |
612 iavf_fill_fdir_udp_hdr(fltr, proto_hdrs);
613 break;
614 case IAVF_FDIR_FLOW_IPV4_SCTP:
615 err = iavf_fill_fdir_ip4_hdr(fltr, proto_hdrs) |
616 iavf_fill_fdir_sctp_hdr(fltr, proto_hdrs);
617 break;
618 case IAVF_FDIR_FLOW_IPV4_AH:
619 err = iavf_fill_fdir_ip4_hdr(fltr, proto_hdrs) |
620 iavf_fill_fdir_ah_hdr(fltr, proto_hdrs);
621 break;
622 case IAVF_FDIR_FLOW_IPV4_ESP:
623 err = iavf_fill_fdir_ip4_hdr(fltr, proto_hdrs) |
624 iavf_fill_fdir_esp_hdr(fltr, proto_hdrs);
625 break;
626 case IAVF_FDIR_FLOW_IPV4_OTHER:
627 err = iavf_fill_fdir_ip4_hdr(fltr, proto_hdrs) |
628 iavf_fill_fdir_l4_hdr(fltr, proto_hdrs);
629 break;
630 case IAVF_FDIR_FLOW_IPV6_TCP:
631 err = iavf_fill_fdir_ip6_hdr(fltr, proto_hdrs) |
632 iavf_fill_fdir_tcp_hdr(fltr, proto_hdrs);
633 break;
634 case IAVF_FDIR_FLOW_IPV6_UDP:
635 err = iavf_fill_fdir_ip6_hdr(fltr, proto_hdrs) |
636 iavf_fill_fdir_udp_hdr(fltr, proto_hdrs);
637 break;
638 case IAVF_FDIR_FLOW_IPV6_SCTP:
639 err = iavf_fill_fdir_ip6_hdr(fltr, proto_hdrs) |
640 iavf_fill_fdir_sctp_hdr(fltr, proto_hdrs);
641 break;
642 case IAVF_FDIR_FLOW_IPV6_AH:
643 err = iavf_fill_fdir_ip6_hdr(fltr, proto_hdrs) |
644 iavf_fill_fdir_ah_hdr(fltr, proto_hdrs);
645 break;
646 case IAVF_FDIR_FLOW_IPV6_ESP:
647 err = iavf_fill_fdir_ip6_hdr(fltr, proto_hdrs) |
648 iavf_fill_fdir_esp_hdr(fltr, proto_hdrs);
649 break;
650 case IAVF_FDIR_FLOW_IPV6_OTHER:
651 err = iavf_fill_fdir_ip6_hdr(fltr, proto_hdrs) |
652 iavf_fill_fdir_l4_hdr(fltr, proto_hdrs);
653 break;
654 case IAVF_FDIR_FLOW_NON_IP_L2:
655 break;
656 default:
657 err = -EINVAL;
658 break;
659 }
660
661 if (err)
662 return err;
663
664 vc_msg->vsi_id = adapter->vsi.id;
665 vc_msg->rule_cfg.action_set.count = 1;
666 vc_msg->rule_cfg.action_set.actions[0].type = fltr->action;
667 vc_msg->rule_cfg.action_set.actions[0].act_conf.queue.index = fltr->q_index;
668
669 return 0;
670 }
671
672 /**
673 * iavf_fdir_flow_proto_name - get the flow protocol name
674 * @flow_type: Flow Director filter flow type
675 **/
iavf_fdir_flow_proto_name(enum iavf_fdir_flow_type flow_type)676 static const char *iavf_fdir_flow_proto_name(enum iavf_fdir_flow_type flow_type)
677 {
678 switch (flow_type) {
679 case IAVF_FDIR_FLOW_IPV4_TCP:
680 case IAVF_FDIR_FLOW_IPV6_TCP:
681 return "TCP";
682 case IAVF_FDIR_FLOW_IPV4_UDP:
683 case IAVF_FDIR_FLOW_IPV6_UDP:
684 return "UDP";
685 case IAVF_FDIR_FLOW_IPV4_SCTP:
686 case IAVF_FDIR_FLOW_IPV6_SCTP:
687 return "SCTP";
688 case IAVF_FDIR_FLOW_IPV4_AH:
689 case IAVF_FDIR_FLOW_IPV6_AH:
690 return "AH";
691 case IAVF_FDIR_FLOW_IPV4_ESP:
692 case IAVF_FDIR_FLOW_IPV6_ESP:
693 return "ESP";
694 case IAVF_FDIR_FLOW_IPV4_OTHER:
695 case IAVF_FDIR_FLOW_IPV6_OTHER:
696 return "Other";
697 case IAVF_FDIR_FLOW_NON_IP_L2:
698 return "Ethernet";
699 default:
700 return NULL;
701 }
702 }
703
704 /**
705 * iavf_print_fdir_fltr
706 * @adapter: adapter structure
707 * @fltr: Flow Director filter to print
708 *
709 * Print the Flow Director filter
710 **/
iavf_print_fdir_fltr(struct iavf_adapter * adapter,struct iavf_fdir_fltr * fltr)711 void iavf_print_fdir_fltr(struct iavf_adapter *adapter, struct iavf_fdir_fltr *fltr)
712 {
713 const char *proto = iavf_fdir_flow_proto_name(fltr->flow_type);
714
715 if (!proto)
716 return;
717
718 switch (fltr->flow_type) {
719 case IAVF_FDIR_FLOW_IPV4_TCP:
720 case IAVF_FDIR_FLOW_IPV4_UDP:
721 case IAVF_FDIR_FLOW_IPV4_SCTP:
722 dev_info(&adapter->pdev->dev, "Rule ID: %u dst_ip: %pI4 src_ip %pI4 %s: dst_port %hu src_port %hu\n",
723 fltr->loc,
724 &fltr->ip_data.v4_addrs.dst_ip,
725 &fltr->ip_data.v4_addrs.src_ip,
726 proto,
727 ntohs(fltr->ip_data.dst_port),
728 ntohs(fltr->ip_data.src_port));
729 break;
730 case IAVF_FDIR_FLOW_IPV4_AH:
731 case IAVF_FDIR_FLOW_IPV4_ESP:
732 dev_info(&adapter->pdev->dev, "Rule ID: %u dst_ip: %pI4 src_ip %pI4 %s: SPI %u\n",
733 fltr->loc,
734 &fltr->ip_data.v4_addrs.dst_ip,
735 &fltr->ip_data.v4_addrs.src_ip,
736 proto,
737 ntohl(fltr->ip_data.spi));
738 break;
739 case IAVF_FDIR_FLOW_IPV4_OTHER:
740 dev_info(&adapter->pdev->dev, "Rule ID: %u dst_ip: %pI4 src_ip %pI4 proto: %u L4_bytes: 0x%x\n",
741 fltr->loc,
742 &fltr->ip_data.v4_addrs.dst_ip,
743 &fltr->ip_data.v4_addrs.src_ip,
744 fltr->ip_data.proto,
745 ntohl(fltr->ip_data.l4_header));
746 break;
747 case IAVF_FDIR_FLOW_IPV6_TCP:
748 case IAVF_FDIR_FLOW_IPV6_UDP:
749 case IAVF_FDIR_FLOW_IPV6_SCTP:
750 dev_info(&adapter->pdev->dev, "Rule ID: %u dst_ip: %pI6 src_ip %pI6 %s: dst_port %hu src_port %hu\n",
751 fltr->loc,
752 &fltr->ip_data.v6_addrs.dst_ip,
753 &fltr->ip_data.v6_addrs.src_ip,
754 proto,
755 ntohs(fltr->ip_data.dst_port),
756 ntohs(fltr->ip_data.src_port));
757 break;
758 case IAVF_FDIR_FLOW_IPV6_AH:
759 case IAVF_FDIR_FLOW_IPV6_ESP:
760 dev_info(&adapter->pdev->dev, "Rule ID: %u dst_ip: %pI6 src_ip %pI6 %s: SPI %u\n",
761 fltr->loc,
762 &fltr->ip_data.v6_addrs.dst_ip,
763 &fltr->ip_data.v6_addrs.src_ip,
764 proto,
765 ntohl(fltr->ip_data.spi));
766 break;
767 case IAVF_FDIR_FLOW_IPV6_OTHER:
768 dev_info(&adapter->pdev->dev, "Rule ID: %u dst_ip: %pI6 src_ip %pI6 proto: %u L4_bytes: 0x%x\n",
769 fltr->loc,
770 &fltr->ip_data.v6_addrs.dst_ip,
771 &fltr->ip_data.v6_addrs.src_ip,
772 fltr->ip_data.proto,
773 ntohl(fltr->ip_data.l4_header));
774 break;
775 case IAVF_FDIR_FLOW_NON_IP_L2:
776 dev_info(&adapter->pdev->dev, "Rule ID: %u eth_type: 0x%x\n",
777 fltr->loc,
778 ntohs(fltr->eth_data.etype));
779 break;
780 default:
781 break;
782 }
783 }
784
785 /**
786 * iavf_fdir_is_dup_fltr - test if filter is already in list
787 * @adapter: pointer to the VF adapter structure
788 * @fltr: Flow Director filter data structure
789 *
790 * Returns true if the filter is found in the list
791 */
iavf_fdir_is_dup_fltr(struct iavf_adapter * adapter,struct iavf_fdir_fltr * fltr)792 bool iavf_fdir_is_dup_fltr(struct iavf_adapter *adapter, struct iavf_fdir_fltr *fltr)
793 {
794 struct iavf_fdir_fltr *tmp;
795 bool ret = false;
796
797 spin_lock_bh(&adapter->fdir_fltr_lock);
798 list_for_each_entry(tmp, &adapter->fdir_list_head, list) {
799 if (iavf_is_raw_fdir(fltr))
800 continue;
801
802 if (tmp->flow_type != fltr->flow_type)
803 continue;
804
805 if (!memcmp(&tmp->eth_data, &fltr->eth_data,
806 sizeof(fltr->eth_data)) &&
807 !memcmp(&tmp->ip_data, &fltr->ip_data,
808 sizeof(fltr->ip_data)) &&
809 !memcmp(&tmp->ext_data, &fltr->ext_data,
810 sizeof(fltr->ext_data))) {
811 ret = true;
812 break;
813 }
814 }
815 spin_unlock_bh(&adapter->fdir_fltr_lock);
816
817 return ret;
818 }
819
820 /**
821 * iavf_find_fdir_fltr - find FDIR filter
822 * @adapter: pointer to the VF adapter structure
823 * @is_raw: filter type, is raw (tc u32) or not (ethtool)
824 * @data: data to ID the filter, type dependent
825 *
826 * Returns: pointer to Flow Director filter if found or NULL. Lock must be held.
827 */
iavf_find_fdir_fltr(struct iavf_adapter * adapter,bool is_raw,u32 data)828 struct iavf_fdir_fltr *iavf_find_fdir_fltr(struct iavf_adapter *adapter,
829 bool is_raw, u32 data)
830 {
831 struct iavf_fdir_fltr *rule;
832
833 list_for_each_entry(rule, &adapter->fdir_list_head, list) {
834 if ((is_raw && rule->cls_u32_handle == data) ||
835 (!is_raw && rule->loc == data))
836 return rule;
837 }
838
839 return NULL;
840 }
841
842 /**
843 * iavf_fdir_add_fltr - add a new node to the flow director filter list
844 * @adapter: pointer to the VF adapter structure
845 * @fltr: filter node to add to structure
846 *
847 * Return: 0 on success or negative errno on failure.
848 */
iavf_fdir_add_fltr(struct iavf_adapter * adapter,struct iavf_fdir_fltr * fltr)849 int iavf_fdir_add_fltr(struct iavf_adapter *adapter,
850 struct iavf_fdir_fltr *fltr)
851 {
852 struct iavf_fdir_fltr *rule, *parent = NULL;
853
854 spin_lock_bh(&adapter->fdir_fltr_lock);
855 if (iavf_fdir_max_reached(adapter)) {
856 spin_unlock_bh(&adapter->fdir_fltr_lock);
857 dev_err(&adapter->pdev->dev,
858 "Unable to add Flow Director filter (limit (%u) reached)\n",
859 IAVF_MAX_FDIR_FILTERS);
860 return -ENOSPC;
861 }
862
863 list_for_each_entry(rule, &adapter->fdir_list_head, list) {
864 if (iavf_is_raw_fdir(fltr))
865 break;
866
867 if (rule->loc >= fltr->loc)
868 break;
869 parent = rule;
870 }
871
872 if (parent)
873 list_add(&fltr->list, &parent->list);
874 else
875 list_add(&fltr->list, &adapter->fdir_list_head);
876
877 iavf_inc_fdir_active_fltr(adapter, fltr);
878
879 if (adapter->link_up)
880 fltr->state = IAVF_FDIR_FLTR_ADD_REQUEST;
881 else
882 fltr->state = IAVF_FDIR_FLTR_INACTIVE;
883 spin_unlock_bh(&adapter->fdir_fltr_lock);
884
885 if (adapter->link_up)
886 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ADD_FDIR_FILTER);
887
888 return 0;
889 }
890
891 /**
892 * iavf_fdir_del_fltr - delete a flow director filter from the list
893 * @adapter: pointer to the VF adapter structure
894 * @is_raw: filter type, is raw (tc u32) or not (ethtool)
895 * @data: data to ID the filter, type dependent
896 *
897 * Return: 0 on success or negative errno on failure.
898 */
iavf_fdir_del_fltr(struct iavf_adapter * adapter,bool is_raw,u32 data)899 int iavf_fdir_del_fltr(struct iavf_adapter *adapter, bool is_raw, u32 data)
900 {
901 struct iavf_fdir_fltr *fltr = NULL;
902 int err = 0;
903
904 spin_lock_bh(&adapter->fdir_fltr_lock);
905 fltr = iavf_find_fdir_fltr(adapter, is_raw, data);
906
907 if (fltr) {
908 if (fltr->state == IAVF_FDIR_FLTR_ACTIVE) {
909 fltr->state = IAVF_FDIR_FLTR_DEL_REQUEST;
910 } else if (fltr->state == IAVF_FDIR_FLTR_INACTIVE) {
911 list_del(&fltr->list);
912 iavf_dec_fdir_active_fltr(adapter, fltr);
913 kfree(fltr);
914 fltr = NULL;
915 } else {
916 err = -EBUSY;
917 }
918 } else if (adapter->fdir_active_fltr) {
919 err = -EINVAL;
920 }
921
922 if (fltr && fltr->state == IAVF_FDIR_FLTR_DEL_REQUEST)
923 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_DEL_FDIR_FILTER);
924
925 spin_unlock_bh(&adapter->fdir_fltr_lock);
926 return err;
927 }
928