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lib/tc: add geneve with option match offload
[ovs.git] / lib / tc.c
1 /*
2 * Copyright (c) 2009-2017 Nicira, Inc.
3 * Copyright (c) 2016 Mellanox Technologies, Ltd.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 #include <config.h>
19 #include "tc.h"
20
21 #include <errno.h>
22 #include <linux/if_ether.h>
23 #include <linux/rtnetlink.h>
24 #include <linux/tc_act/tc_csum.h>
25 #include <linux/tc_act/tc_gact.h>
26 #include <linux/tc_act/tc_mirred.h>
27 #include <linux/tc_act/tc_pedit.h>
28 #include <linux/tc_act/tc_tunnel_key.h>
29 #include <linux/tc_act/tc_vlan.h>
30 #include <linux/gen_stats.h>
31 #include <net/if.h>
32 #include <unistd.h>
33
34 #include "byte-order.h"
35 #include "netlink-socket.h"
36 #include "netlink.h"
37 #include "openvswitch/ofpbuf.h"
38 #include "openvswitch/util.h"
39 #include "openvswitch/vlog.h"
40 #include "packets.h"
41 #include "timeval.h"
42 #include "unaligned.h"
43
44 #define MAX_PEDIT_OFFSETS 32
45
46 #ifndef TCM_IFINDEX_MAGIC_BLOCK
47 #define TCM_IFINDEX_MAGIC_BLOCK (0xFFFFFFFFU)
48 #endif
49
50 #if TCA_MAX < 14
51 #define TCA_INGRESS_BLOCK 13
52 #endif
53
54 VLOG_DEFINE_THIS_MODULE(tc);
55
56 static struct vlog_rate_limit error_rl = VLOG_RATE_LIMIT_INIT(60, 5);
57
58 enum tc_offload_policy {
59 TC_POLICY_NONE,
60 TC_POLICY_SKIP_SW,
61 TC_POLICY_SKIP_HW
62 };
63
64 static enum tc_offload_policy tc_policy = TC_POLICY_NONE;
65
66 struct tc_pedit_key_ex {
67 enum pedit_header_type htype;
68 enum pedit_cmd cmd;
69 };
70
71 struct flower_key_to_pedit {
72 enum pedit_header_type htype;
73 int offset;
74 int flower_offset;
75 int size;
76 };
77
78 static struct flower_key_to_pedit flower_pedit_map[] = {
79 {
80 TCA_PEDIT_KEY_EX_HDR_TYPE_IP4,
81 12,
82 offsetof(struct tc_flower_key, ipv4.ipv4_src),
83 MEMBER_SIZEOF(struct tc_flower_key, ipv4.ipv4_src)
84 }, {
85 TCA_PEDIT_KEY_EX_HDR_TYPE_IP4,
86 16,
87 offsetof(struct tc_flower_key, ipv4.ipv4_dst),
88 MEMBER_SIZEOF(struct tc_flower_key, ipv4.ipv4_dst)
89 }, {
90 TCA_PEDIT_KEY_EX_HDR_TYPE_IP4,
91 8,
92 offsetof(struct tc_flower_key, ipv4.rewrite_ttl),
93 MEMBER_SIZEOF(struct tc_flower_key, ipv4.rewrite_ttl)
94 }, {
95 TCA_PEDIT_KEY_EX_HDR_TYPE_IP6,
96 8,
97 offsetof(struct tc_flower_key, ipv6.ipv6_src),
98 MEMBER_SIZEOF(struct tc_flower_key, ipv6.ipv6_src)
99 }, {
100 TCA_PEDIT_KEY_EX_HDR_TYPE_IP6,
101 24,
102 offsetof(struct tc_flower_key, ipv6.ipv6_dst),
103 MEMBER_SIZEOF(struct tc_flower_key, ipv6.ipv6_dst)
104 }, {
105 TCA_PEDIT_KEY_EX_HDR_TYPE_ETH,
106 6,
107 offsetof(struct tc_flower_key, src_mac),
108 MEMBER_SIZEOF(struct tc_flower_key, src_mac)
109 }, {
110 TCA_PEDIT_KEY_EX_HDR_TYPE_ETH,
111 0,
112 offsetof(struct tc_flower_key, dst_mac),
113 MEMBER_SIZEOF(struct tc_flower_key, dst_mac)
114 }, {
115 TCA_PEDIT_KEY_EX_HDR_TYPE_ETH,
116 12,
117 offsetof(struct tc_flower_key, eth_type),
118 MEMBER_SIZEOF(struct tc_flower_key, eth_type)
119 }, {
120 TCA_PEDIT_KEY_EX_HDR_TYPE_TCP,
121 0,
122 offsetof(struct tc_flower_key, tcp_src),
123 MEMBER_SIZEOF(struct tc_flower_key, tcp_src)
124 }, {
125 TCA_PEDIT_KEY_EX_HDR_TYPE_TCP,
126 2,
127 offsetof(struct tc_flower_key, tcp_dst),
128 MEMBER_SIZEOF(struct tc_flower_key, tcp_dst)
129 }, {
130 TCA_PEDIT_KEY_EX_HDR_TYPE_UDP,
131 0,
132 offsetof(struct tc_flower_key, udp_src),
133 MEMBER_SIZEOF(struct tc_flower_key, udp_src)
134 }, {
135 TCA_PEDIT_KEY_EX_HDR_TYPE_UDP,
136 2,
137 offsetof(struct tc_flower_key, udp_dst),
138 MEMBER_SIZEOF(struct tc_flower_key, udp_dst)
139 },
140 };
141
142 static inline int
143 csum_update_flag(struct tc_flower *flower,
144 enum pedit_header_type htype);
145
146 struct tcmsg *
147 tc_make_request(int ifindex, int type, unsigned int flags,
148 struct ofpbuf *request)
149 {
150 struct tcmsg *tcmsg;
151
152 ofpbuf_init(request, 512);
153 nl_msg_put_nlmsghdr(request, sizeof *tcmsg, type, NLM_F_REQUEST | flags);
154 tcmsg = ofpbuf_put_zeros(request, sizeof *tcmsg);
155 tcmsg->tcm_family = AF_UNSPEC;
156 tcmsg->tcm_ifindex = ifindex;
157 /* Caller should fill in tcmsg->tcm_handle. */
158 /* Caller should fill in tcmsg->tcm_parent. */
159
160 return tcmsg;
161 }
162
163 int
164 tc_transact(struct ofpbuf *request, struct ofpbuf **replyp)
165 {
166 int error = nl_transact(NETLINK_ROUTE, request, replyp);
167 ofpbuf_uninit(request);
168 return error;
169 }
170
171 /* Adds or deletes a root ingress qdisc on device with specified ifindex.
172 *
173 * This function is equivalent to running the following when 'add' is true:
174 * /sbin/tc qdisc add dev <devname> handle ffff: ingress
175 *
176 * This function is equivalent to running the following when 'add' is false:
177 * /sbin/tc qdisc del dev <devname> handle ffff: ingress
178 *
179 * Where dev <devname> is the device with specified ifindex name.
180 *
181 * The configuration and stats may be seen with the following command:
182 * /sbin/tc -s qdisc show dev <devname>
183 *
184 * If block_id is greater than 0, then the ingress qdisc is added to a block.
185 * In this case, it is equivalent to running (when 'add' is true):
186 * /sbin/tc qdisc add dev <devname> ingress_block <block_id> ingress
187 *
188 * Returns 0 if successful, otherwise a positive errno value.
189 */
190 int
191 tc_add_del_ingress_qdisc(int ifindex, bool add, uint32_t block_id)
192 {
193 struct ofpbuf request;
194 struct tcmsg *tcmsg;
195 int error;
196 int type = add ? RTM_NEWQDISC : RTM_DELQDISC;
197 int flags = add ? NLM_F_EXCL | NLM_F_CREATE : 0;
198
199 tcmsg = tc_make_request(ifindex, type, flags, &request);
200 tcmsg->tcm_handle = TC_H_MAKE(TC_H_INGRESS, 0);
201 tcmsg->tcm_parent = TC_H_INGRESS;
202 nl_msg_put_string(&request, TCA_KIND, "ingress");
203 nl_msg_put_unspec(&request, TCA_OPTIONS, NULL, 0);
204 if (block_id) {
205 nl_msg_put_u32(&request, TCA_INGRESS_BLOCK, block_id);
206 }
207
208 error = tc_transact(&request, NULL);
209 if (error) {
210 /* If we're deleting the qdisc, don't worry about some of the
211 * error conditions. */
212 if (!add && (error == ENOENT || error == EINVAL)) {
213 return 0;
214 }
215 return error;
216 }
217
218 return 0;
219 }
220
221 static const struct nl_policy tca_policy[] = {
222 [TCA_KIND] = { .type = NL_A_STRING, .optional = false, },
223 [TCA_OPTIONS] = { .type = NL_A_NESTED, .optional = false, },
224 [TCA_STATS] = { .type = NL_A_UNSPEC,
225 .min_len = sizeof(struct tc_stats), .optional = true, },
226 [TCA_STATS2] = { .type = NL_A_NESTED, .optional = true, },
227 };
228
229 static const struct nl_policy tca_flower_policy[] = {
230 [TCA_FLOWER_CLASSID] = { .type = NL_A_U32, .optional = true, },
231 [TCA_FLOWER_INDEV] = { .type = NL_A_STRING, .max_len = IFNAMSIZ,
232 .optional = true, },
233 [TCA_FLOWER_KEY_ETH_SRC] = { .type = NL_A_UNSPEC,
234 .min_len = ETH_ALEN, .optional = true, },
235 [TCA_FLOWER_KEY_ETH_DST] = { .type = NL_A_UNSPEC,
236 .min_len = ETH_ALEN, .optional = true, },
237 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .type = NL_A_UNSPEC,
238 .min_len = ETH_ALEN,
239 .optional = true, },
240 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .type = NL_A_UNSPEC,
241 .min_len = ETH_ALEN,
242 .optional = true, },
243 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NL_A_U16, .optional = false, },
244 [TCA_FLOWER_FLAGS] = { .type = NL_A_U32, .optional = false, },
245 [TCA_FLOWER_ACT] = { .type = NL_A_NESTED, .optional = false, },
246 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NL_A_U8, .optional = true, },
247 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NL_A_U32, .optional = true, },
248 [TCA_FLOWER_KEY_IPV4_DST] = {.type = NL_A_U32, .optional = true, },
249 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NL_A_U32, .optional = true, },
250 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NL_A_U32, .optional = true, },
251 [TCA_FLOWER_KEY_IPV6_SRC] = { .type = NL_A_UNSPEC,
252 .min_len = sizeof(struct in6_addr),
253 .optional = true, },
254 [TCA_FLOWER_KEY_IPV6_DST] = { .type = NL_A_UNSPEC,
255 .min_len = sizeof(struct in6_addr),
256 .optional = true, },
257 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .type = NL_A_UNSPEC,
258 .min_len = sizeof(struct in6_addr),
259 .optional = true, },
260 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .type = NL_A_UNSPEC,
261 .min_len = sizeof(struct in6_addr),
262 .optional = true, },
263 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NL_A_U16, .optional = true, },
264 [TCA_FLOWER_KEY_TCP_DST] = { .type = NL_A_U16, .optional = true, },
265 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NL_A_U16, .optional = true, },
266 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NL_A_U16, .optional = true, },
267 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NL_A_U16, .optional = true, },
268 [TCA_FLOWER_KEY_UDP_DST] = { .type = NL_A_U16, .optional = true, },
269 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NL_A_U16, .optional = true, },
270 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NL_A_U16, .optional = true, },
271 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NL_A_U16, .optional = true, },
272 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NL_A_U16, .optional = true, },
273 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NL_A_U16, .optional = true, },
274 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NL_A_U16, .optional = true, },
275 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NL_A_U8, .optional = true, },
276 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NL_A_U8, .optional = true, },
277 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NL_A_U8, .optional = true, },
278 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NL_A_U32, .optional = true, },
279 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NL_A_U16, .optional = true, },
280 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NL_A_U8, .optional = true, },
281 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NL_A_U16, .optional = true, },
282 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NL_A_U32, .optional = true, },
283 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NL_A_U32, .optional = true, },
284 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NL_A_U32, .optional = true, },
285 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NL_A_U32,
286 .optional = true, },
287 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NL_A_U32,
288 .optional = true, },
289 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .type = NL_A_UNSPEC,
290 .min_len = sizeof(struct in6_addr),
291 .optional = true, },
292 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .type = NL_A_UNSPEC,
293 .min_len = sizeof(struct in6_addr),
294 .optional = true, },
295 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .type = NL_A_UNSPEC,
296 .min_len = sizeof(struct in6_addr),
297 .optional = true, },
298 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .type = NL_A_UNSPEC,
299 .min_len = sizeof(struct in6_addr),
300 .optional = true, },
301 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NL_A_U16,
302 .optional = true, },
303 [TCA_FLOWER_KEY_FLAGS] = { .type = NL_A_BE32, .optional = true, },
304 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NL_A_BE32, .optional = true, },
305 [TCA_FLOWER_KEY_IP_TTL] = { .type = NL_A_U8,
306 .optional = true, },
307 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NL_A_U8,
308 .optional = true, },
309 [TCA_FLOWER_KEY_IP_TOS] = { .type = NL_A_U8,
310 .optional = true, },
311 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NL_A_U8,
312 .optional = true, },
313 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NL_A_U16,
314 .optional = true, },
315 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NL_A_U16,
316 .optional = true, },
317 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NL_A_U16, .optional = true, },
318 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NL_A_U8, .optional = true, },
319 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NL_A_U16, .optional = true, },
320 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NL_A_U8,
321 .optional = true, },
322 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NL_A_U8,
323 .optional = true, },
324 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NL_A_U8,
325 .optional = true, },
326 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NL_A_U8,
327 .optional = true, },
328 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NL_A_NESTED, .optional = true, },
329 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NL_A_NESTED,
330 .optional = true, },
331 };
332
333 static void
334 nl_parse_flower_eth(struct nlattr **attrs, struct tc_flower *flower)
335 {
336 const struct eth_addr *eth;
337
338 if (attrs[TCA_FLOWER_KEY_ETH_SRC_MASK]) {
339 eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_SRC], ETH_ALEN);
340 memcpy(&flower->key.src_mac, eth, sizeof flower->key.src_mac);
341
342 eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_SRC_MASK], ETH_ALEN);
343 memcpy(&flower->mask.src_mac, eth, sizeof flower->mask.src_mac);
344 }
345 if (attrs[TCA_FLOWER_KEY_ETH_DST_MASK]) {
346 eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_DST], ETH_ALEN);
347 memcpy(&flower->key.dst_mac, eth, sizeof flower->key.dst_mac);
348
349 eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_DST_MASK], ETH_ALEN);
350 memcpy(&flower->mask.dst_mac, eth, sizeof flower->mask.dst_mac);
351 }
352 }
353
354 static void
355 nl_parse_flower_mpls(struct nlattr **attrs, struct tc_flower *flower)
356 {
357 uint8_t ttl, tc, bos;
358 uint32_t label;
359
360 if (!eth_type_mpls(flower->key.eth_type)) {
361 return;
362 }
363
364 flower->key.encap_eth_type[0] =
365 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ETH_TYPE]);
366 flower->key.mpls_lse = 0;
367 flower->mask.mpls_lse = 0;
368
369 if (attrs[TCA_FLOWER_KEY_MPLS_TTL]) {
370 ttl = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_MPLS_TTL]);
371 set_mpls_lse_ttl(&flower->key.mpls_lse, ttl);
372 set_mpls_lse_ttl(&flower->mask.mpls_lse, 0xff);
373 }
374
375 if (attrs[TCA_FLOWER_KEY_MPLS_BOS]) {
376 bos = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_MPLS_BOS]);
377 set_mpls_lse_bos(&flower->key.mpls_lse, bos);
378 set_mpls_lse_ttl(&flower->mask.mpls_lse, 0xff);
379 }
380
381 if (attrs[TCA_FLOWER_KEY_MPLS_TC]) {
382 tc = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_MPLS_TC]);
383 set_mpls_lse_tc(&flower->key.mpls_lse, tc);
384 set_mpls_lse_tc(&flower->mask.mpls_lse, 0xff);
385 }
386
387 if (attrs[TCA_FLOWER_KEY_MPLS_LABEL]) {
388 label = nl_attr_get_u32(attrs[TCA_FLOWER_KEY_MPLS_LABEL]);
389 set_mpls_lse_label(&flower->key.mpls_lse, htonl(label));
390 set_mpls_lse_label(&flower->mask.mpls_lse, OVS_BE32_MAX);
391 }
392 }
393
394 static void
395 nl_parse_flower_vlan(struct nlattr **attrs, struct tc_flower *flower)
396 {
397 ovs_be16 encap_ethtype;
398
399 if (!eth_type_vlan(flower->key.eth_type)) {
400 return;
401 }
402
403 flower->key.encap_eth_type[0] =
404 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ETH_TYPE]);
405
406 if (attrs[TCA_FLOWER_KEY_VLAN_ID]) {
407 flower->key.vlan_id[0] =
408 nl_attr_get_u16(attrs[TCA_FLOWER_KEY_VLAN_ID]);
409 flower->mask.vlan_id[0] = 0xffff;
410 }
411 if (attrs[TCA_FLOWER_KEY_VLAN_PRIO]) {
412 flower->key.vlan_prio[0] =
413 nl_attr_get_u8(attrs[TCA_FLOWER_KEY_VLAN_PRIO]);
414 flower->mask.vlan_prio[0] = 0xff;
415 }
416
417 if (!attrs[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
418 return;
419 }
420
421 encap_ethtype = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
422 if (!eth_type_vlan(encap_ethtype)) {
423 return;
424 }
425
426 flower->key.encap_eth_type[1] = flower->key.encap_eth_type[0];
427 flower->key.encap_eth_type[0] = encap_ethtype;
428
429 if (attrs[TCA_FLOWER_KEY_CVLAN_ID]) {
430 flower->key.vlan_id[1] =
431 nl_attr_get_u16(attrs[TCA_FLOWER_KEY_CVLAN_ID]);
432 flower->mask.vlan_id[1] = 0xffff;
433 }
434 if (attrs[TCA_FLOWER_KEY_CVLAN_PRIO]) {
435 flower->key.vlan_prio[1] =
436 nl_attr_get_u8(attrs[TCA_FLOWER_KEY_CVLAN_PRIO]);
437 flower->mask.vlan_prio[1] = 0xff;
438 }
439 }
440
441 static int
442 nl_parse_geneve_key(const struct nlattr *in_nlattr,
443 struct tun_metadata *metadata)
444 {
445 struct geneve_opt *opt = NULL;
446 const struct ofpbuf *msg;
447 uint16_t last_opt_type;
448 struct nlattr *nla;
449 struct ofpbuf buf;
450 size_t left;
451 int cnt;
452
453 nl_attr_get_nested(in_nlattr, &buf);
454 msg = &buf;
455
456 last_opt_type = TCA_FLOWER_KEY_ENC_OPT_GENEVE_UNSPEC;
457 cnt = 0;
458 NL_ATTR_FOR_EACH (nla, left, ofpbuf_at(msg, 0, 0), msg->size) {
459 uint16_t type = nl_attr_type(nla);
460
461 switch (type) {
462 case TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS:
463 if (cnt && last_opt_type != TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA) {
464 VLOG_ERR_RL(&error_rl, "failed to parse tun options class");
465 return EINVAL;
466 }
467
468 opt = &metadata->opts.gnv[cnt];
469 opt->opt_class = nl_attr_get_be16(nla);
470 cnt += sizeof(struct geneve_opt) / 4;
471 metadata->present.len += sizeof(struct geneve_opt);
472 last_opt_type = TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS;
473 break;
474 case TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE:
475 if (last_opt_type != TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS) {
476 VLOG_ERR_RL(&error_rl, "failed to parse tun options type");
477 return EINVAL;
478 }
479
480 opt->type = nl_attr_get_u8(nla);
481 last_opt_type = TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE;
482 break;
483 case TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA:
484 if (last_opt_type != TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE) {
485 VLOG_ERR_RL(&error_rl, "failed to parse tun options data");
486 return EINVAL;
487 }
488
489 opt->length = nl_attr_get_size(nla) / 4;
490 memcpy(opt + 1, nl_attr_get_unspec(nla, 1), opt->length * 4);
491 cnt += opt->length;
492 metadata->present.len += opt->length * 4;
493 last_opt_type = TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA;
494 break;
495 }
496 }
497
498 if (last_opt_type != TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA) {
499 VLOG_ERR_RL(&error_rl, "failed to parse tun options without data");
500 return EINVAL;
501 }
502
503 return 0;
504 }
505
506 static int
507 nl_parse_flower_tunnel_opts(struct nlattr *options,
508 struct tun_metadata *metadata)
509 {
510 const struct ofpbuf *msg;
511 struct nlattr *nla;
512 struct ofpbuf buf;
513 size_t left;
514 int err;
515
516 nl_attr_get_nested(options, &buf);
517 msg = &buf;
518
519 NL_ATTR_FOR_EACH (nla, left, ofpbuf_at(msg, 0, 0), msg->size) {
520 uint16_t type = nl_attr_type(nla);
521 switch (type) {
522 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
523 err = nl_parse_geneve_key(nla, metadata);
524 if (err) {
525 return err;
526 }
527
528 break;
529 }
530 }
531
532 return 0;
533 }
534
535 static int
536 flower_tun_geneve_opt_check_len(struct tun_metadata *key,
537 struct tun_metadata *mask)
538 {
539 const struct geneve_opt *opt, *opt_mask;
540 int len, cnt = 0;
541
542 len = key->present.len;
543 while (len) {
544 opt = &key->opts.gnv[cnt];
545 opt_mask = &mask->opts.gnv[cnt];
546
547 if (opt->length != opt_mask->length) {
548 VLOG_ERR_RL(&error_rl,
549 "failed to parse tun options; key/mask length differ");
550 return EINVAL;
551 }
552
553 cnt += sizeof(struct geneve_opt) / 4 + opt->length;
554 len -= sizeof(struct geneve_opt) + opt->length * 4;
555 }
556
557 return 0;
558 }
559
560 static int
561 nl_parse_flower_tunnel(struct nlattr **attrs, struct tc_flower *flower)
562 {
563 int err;
564
565 if (attrs[TCA_FLOWER_KEY_ENC_KEY_ID]) {
566 ovs_be32 id = nl_attr_get_be32(attrs[TCA_FLOWER_KEY_ENC_KEY_ID]);
567
568 flower->key.tunnel.id = be32_to_be64(id);
569 }
570 if (attrs[TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK]) {
571 flower->key.tunnel.ipv4.ipv4_src =
572 nl_attr_get_be32(attrs[TCA_FLOWER_KEY_ENC_IPV4_SRC]);
573 }
574 if (attrs[TCA_FLOWER_KEY_ENC_IPV4_DST_MASK]) {
575 flower->key.tunnel.ipv4.ipv4_dst =
576 nl_attr_get_be32(attrs[TCA_FLOWER_KEY_ENC_IPV4_DST]);
577 }
578 if (attrs[TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK]) {
579 flower->key.tunnel.ipv6.ipv6_src =
580 nl_attr_get_in6_addr(attrs[TCA_FLOWER_KEY_ENC_IPV6_SRC]);
581 }
582 if (attrs[TCA_FLOWER_KEY_ENC_IPV6_DST_MASK]) {
583 flower->key.tunnel.ipv6.ipv6_dst =
584 nl_attr_get_in6_addr(attrs[TCA_FLOWER_KEY_ENC_IPV6_DST]);
585 }
586 if (attrs[TCA_FLOWER_KEY_ENC_UDP_DST_PORT]) {
587 flower->key.tunnel.tp_dst =
588 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ENC_UDP_DST_PORT]);
589 }
590 if (attrs[TCA_FLOWER_KEY_ENC_IP_TOS_MASK]) {
591 flower->key.tunnel.tos =
592 nl_attr_get_u8(attrs[TCA_FLOWER_KEY_ENC_IP_TOS]);
593 flower->mask.tunnel.tos =
594 nl_attr_get_u8(attrs[TCA_FLOWER_KEY_ENC_IP_TOS_MASK]);
595 }
596 if (attrs[TCA_FLOWER_KEY_ENC_IP_TTL_MASK]) {
597 flower->key.tunnel.ttl =
598 nl_attr_get_u8(attrs[TCA_FLOWER_KEY_ENC_IP_TTL]);
599 flower->mask.tunnel.ttl =
600 nl_attr_get_u8(attrs[TCA_FLOWER_KEY_ENC_IP_TTL_MASK]);
601 }
602 if (attrs[TCA_FLOWER_KEY_ENC_OPTS] &&
603 attrs[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
604 err = nl_parse_flower_tunnel_opts(attrs[TCA_FLOWER_KEY_ENC_OPTS],
605 &flower->key.tunnel.metadata);
606 if (err) {
607 return err;
608 }
609
610 err = nl_parse_flower_tunnel_opts(attrs[TCA_FLOWER_KEY_ENC_OPTS_MASK],
611 &flower->mask.tunnel.metadata);
612 if (err) {
613 return err;
614 }
615
616 err = flower_tun_geneve_opt_check_len(&flower->key.tunnel.metadata,
617 &flower->mask.tunnel.metadata);
618 if (err) {
619 return err;
620 }
621 } else if (attrs[TCA_FLOWER_KEY_ENC_OPTS]) {
622 VLOG_ERR_RL(&error_rl,
623 "failed to parse tun options; no mask supplied");
624 return EINVAL;
625 } else if (attrs[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
626 VLOG_ERR_RL(&error_rl, "failed to parse tun options; no key supplied");
627 return EINVAL;
628 }
629
630 return 0;
631 }
632
633 static void
634 nl_parse_flower_ip(struct nlattr **attrs, struct tc_flower *flower) {
635 uint8_t ip_proto = 0;
636 struct tc_flower_key *key = &flower->key;
637 struct tc_flower_key *mask = &flower->mask;
638
639 if (attrs[TCA_FLOWER_KEY_IP_PROTO]) {
640 ip_proto = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_IP_PROTO]);
641 key->ip_proto = ip_proto;
642 mask->ip_proto = UINT8_MAX;
643 }
644
645 if (attrs[TCA_FLOWER_KEY_FLAGS_MASK]) {
646 key->flags = ntohl(nl_attr_get_be32(attrs[TCA_FLOWER_KEY_FLAGS]));
647 mask->flags =
648 ntohl(nl_attr_get_be32(attrs[TCA_FLOWER_KEY_FLAGS_MASK]));
649 }
650
651 if (attrs[TCA_FLOWER_KEY_IPV4_SRC_MASK]) {
652 key->ipv4.ipv4_src =
653 nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_SRC]);
654 mask->ipv4.ipv4_src =
655 nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_SRC_MASK]);
656 }
657 if (attrs[TCA_FLOWER_KEY_IPV4_DST_MASK]) {
658 key->ipv4.ipv4_dst =
659 nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_DST]);
660 mask->ipv4.ipv4_dst =
661 nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_DST_MASK]);
662 }
663 if (attrs[TCA_FLOWER_KEY_IPV6_SRC_MASK]) {
664 struct nlattr *attr = attrs[TCA_FLOWER_KEY_IPV6_SRC];
665 struct nlattr *attr_mask = attrs[TCA_FLOWER_KEY_IPV6_SRC_MASK];
666
667 key->ipv6.ipv6_src = nl_attr_get_in6_addr(attr);
668 mask->ipv6.ipv6_src = nl_attr_get_in6_addr(attr_mask);
669 }
670 if (attrs[TCA_FLOWER_KEY_IPV6_DST_MASK]) {
671 struct nlattr *attr = attrs[TCA_FLOWER_KEY_IPV6_DST];
672 struct nlattr *attr_mask = attrs[TCA_FLOWER_KEY_IPV6_DST_MASK];
673
674 key->ipv6.ipv6_dst = nl_attr_get_in6_addr(attr);
675 mask->ipv6.ipv6_dst = nl_attr_get_in6_addr(attr_mask);
676 }
677
678 if (ip_proto == IPPROTO_TCP) {
679 if (attrs[TCA_FLOWER_KEY_TCP_SRC_MASK]) {
680 key->tcp_src =
681 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_SRC]);
682 mask->tcp_src =
683 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_SRC_MASK]);
684 }
685 if (attrs[TCA_FLOWER_KEY_TCP_DST_MASK]) {
686 key->tcp_dst =
687 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_DST]);
688 mask->tcp_dst =
689 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_DST_MASK]);
690 }
691 if (attrs[TCA_FLOWER_KEY_TCP_FLAGS_MASK]) {
692 key->tcp_flags =
693 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_FLAGS]);
694 mask->tcp_flags =
695 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_FLAGS_MASK]);
696 }
697 } else if (ip_proto == IPPROTO_UDP) {
698 if (attrs[TCA_FLOWER_KEY_UDP_SRC_MASK]) {
699 key->udp_src = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_SRC]);
700 mask->udp_src =
701 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_SRC_MASK]);
702 }
703 if (attrs[TCA_FLOWER_KEY_UDP_DST_MASK]) {
704 key->udp_dst = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_DST]);
705 mask->udp_dst =
706 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_DST_MASK]);
707 }
708 } else if (ip_proto == IPPROTO_SCTP) {
709 if (attrs[TCA_FLOWER_KEY_SCTP_SRC_MASK]) {
710 key->sctp_src = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_SCTP_SRC]);
711 mask->sctp_src =
712 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_SCTP_SRC_MASK]);
713 }
714 if (attrs[TCA_FLOWER_KEY_SCTP_DST_MASK]) {
715 key->sctp_dst = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_SCTP_DST]);
716 mask->sctp_dst =
717 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_SCTP_DST_MASK]);
718 }
719 }
720
721 if (attrs[TCA_FLOWER_KEY_IP_TTL_MASK]) {
722 key->ip_ttl = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_IP_TTL]);
723 mask->ip_ttl = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_IP_TTL_MASK]);
724 }
725
726 if (attrs[TCA_FLOWER_KEY_IP_TOS_MASK]) {
727 key->ip_tos = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_IP_TOS]);
728 mask->ip_tos = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_IP_TOS_MASK]);
729 }
730 }
731
732 static enum tc_offloaded_state
733 nl_get_flower_offloaded_state(struct nlattr **attrs)
734 {
735 uint32_t flower_flags = 0;
736
737 if (attrs[TCA_FLOWER_FLAGS]) {
738 flower_flags = nl_attr_get_u32(attrs[TCA_FLOWER_FLAGS]);
739 if (flower_flags & TCA_CLS_FLAGS_NOT_IN_HW) {
740 return TC_OFFLOADED_STATE_NOT_IN_HW;
741 } else if (flower_flags & TCA_CLS_FLAGS_IN_HW) {
742 return TC_OFFLOADED_STATE_IN_HW;
743 }
744 }
745 return TC_OFFLOADED_STATE_UNDEFINED;
746 }
747
748 static void
749 nl_parse_flower_flags(struct nlattr **attrs, struct tc_flower *flower)
750 {
751 flower->offloaded_state = nl_get_flower_offloaded_state(attrs);
752 }
753
754 static const struct nl_policy pedit_policy[] = {
755 [TCA_PEDIT_PARMS_EX] = { .type = NL_A_UNSPEC,
756 .min_len = sizeof(struct tc_pedit),
757 .optional = false, },
758 [TCA_PEDIT_KEYS_EX] = { .type = NL_A_NESTED,
759 .optional = false, },
760 };
761
762 static int
763 nl_parse_act_pedit(struct nlattr *options, struct tc_flower *flower)
764 {
765 struct tc_action *action;
766 struct nlattr *pe_attrs[ARRAY_SIZE(pedit_policy)];
767 const struct tc_pedit *pe;
768 const struct tc_pedit_key *keys;
769 const struct nlattr *nla, *keys_ex, *ex_type;
770 const void *keys_attr;
771 char *rewrite_key = (void *) &flower->rewrite.key;
772 char *rewrite_mask = (void *) &flower->rewrite.mask;
773 size_t keys_ex_size, left;
774 int type, i = 0, err;
775
776 if (!nl_parse_nested(options, pedit_policy, pe_attrs,
777 ARRAY_SIZE(pedit_policy))) {
778 VLOG_ERR_RL(&error_rl, "failed to parse pedit action options");
779 return EPROTO;
780 }
781
782 pe = nl_attr_get_unspec(pe_attrs[TCA_PEDIT_PARMS_EX], sizeof *pe);
783 keys = pe->keys;
784 keys_attr = pe_attrs[TCA_PEDIT_KEYS_EX];
785 keys_ex = nl_attr_get(keys_attr);
786 keys_ex_size = nl_attr_get_size(keys_attr);
787
788 NL_ATTR_FOR_EACH (nla, left, keys_ex, keys_ex_size) {
789 if (i >= pe->nkeys) {
790 break;
791 }
792
793 if (nl_attr_type(nla) != TCA_PEDIT_KEY_EX) {
794 VLOG_ERR_RL(&error_rl, "unable to parse legacy pedit type: %d",
795 nl_attr_type(nla));
796 return EOPNOTSUPP;
797 }
798
799 ex_type = nl_attr_find_nested(nla, TCA_PEDIT_KEY_EX_HTYPE);
800 type = nl_attr_get_u16(ex_type);
801
802 err = csum_update_flag(flower, type);
803 if (err) {
804 return err;
805 }
806
807 for (int j = 0; j < ARRAY_SIZE(flower_pedit_map); j++) {
808 struct flower_key_to_pedit *m = &flower_pedit_map[j];
809 int flower_off = m->flower_offset;
810 int sz = m->size;
811 int mf = m->offset;
812
813 if (m->htype != type) {
814 continue;
815 }
816
817 /* check overlap between current pedit key, which is always
818 * 4 bytes (range [off, off + 3]), and a map entry in
819 * flower_pedit_map (range [mf, mf + sz - 1]) */
820 if ((keys->off >= mf && keys->off < mf + sz)
821 || (keys->off + 3 >= mf && keys->off + 3 < mf + sz)) {
822 int diff = flower_off + (keys->off - mf);
823 uint32_t *dst = (void *) (rewrite_key + diff);
824 uint32_t *dst_m = (void *) (rewrite_mask + diff);
825 uint32_t mask = ~(keys->mask);
826 uint32_t zero_bits;
827
828 if (keys->off < mf) {
829 zero_bits = 8 * (mf - keys->off);
830 mask &= UINT32_MAX << zero_bits;
831 } else if (keys->off + 4 > mf + m->size) {
832 zero_bits = 8 * (keys->off + 4 - mf - m->size);
833 mask &= UINT32_MAX >> zero_bits;
834 }
835
836 *dst_m |= mask;
837 *dst |= keys->val & mask;
838 }
839 }
840
841 keys++;
842 i++;
843 }
844
845 action = &flower->actions[flower->action_count++];
846 action->type = TC_ACT_PEDIT;
847
848 return 0;
849 }
850
851 static const struct nl_policy tunnel_key_policy[] = {
852 [TCA_TUNNEL_KEY_PARMS] = { .type = NL_A_UNSPEC,
853 .min_len = sizeof(struct tc_tunnel_key),
854 .optional = false, },
855 [TCA_TUNNEL_KEY_ENC_IPV4_SRC] = { .type = NL_A_U32, .optional = true, },
856 [TCA_TUNNEL_KEY_ENC_IPV4_DST] = { .type = NL_A_U32, .optional = true, },
857 [TCA_TUNNEL_KEY_ENC_IPV6_SRC] = { .type = NL_A_UNSPEC,
858 .min_len = sizeof(struct in6_addr),
859 .optional = true, },
860 [TCA_TUNNEL_KEY_ENC_IPV6_DST] = { .type = NL_A_UNSPEC,
861 .min_len = sizeof(struct in6_addr),
862 .optional = true, },
863 [TCA_TUNNEL_KEY_ENC_KEY_ID] = { .type = NL_A_U32, .optional = true, },
864 [TCA_TUNNEL_KEY_ENC_DST_PORT] = { .type = NL_A_U16, .optional = true, },
865 [TCA_TUNNEL_KEY_ENC_TOS] = { .type = NL_A_U8, .optional = true, },
866 [TCA_TUNNEL_KEY_ENC_TTL] = { .type = NL_A_U8, .optional = true, },
867 [TCA_TUNNEL_KEY_ENC_OPTS] = { .type = NL_A_NESTED, .optional = true, },
868 };
869
870 static int
871 nl_parse_act_geneve_opts(const struct nlattr *in_nlattr,
872 struct tc_action *action)
873 {
874 struct geneve_opt *opt = NULL;
875 const struct ofpbuf *msg;
876 uint16_t last_opt_type;
877 struct nlattr *nla;
878 struct ofpbuf buf;
879 size_t left;
880 int cnt;
881
882 nl_attr_get_nested(in_nlattr, &buf);
883 msg = &buf;
884
885 last_opt_type = TCA_TUNNEL_KEY_ENC_OPT_GENEVE_UNSPEC;
886 cnt = 0;
887 NL_ATTR_FOR_EACH (nla, left, ofpbuf_at(msg, 0, 0), msg->size) {
888 uint16_t type = nl_attr_type(nla);
889
890 switch (type) {
891 case TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS:
892 if (cnt && last_opt_type != TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA) {
893 VLOG_ERR_RL(&error_rl,
894 "failed to parse action geneve options class");
895 return EINVAL;
896 }
897
898 opt = &action->encap.data.opts.gnv[cnt];
899 opt->opt_class = nl_attr_get_be16(nla);
900 cnt += sizeof(struct geneve_opt) / 4;
901 action->encap.data.present.len += sizeof(struct geneve_opt);
902 last_opt_type = TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS;
903 break;
904 case TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE:
905 if (last_opt_type != TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS) {
906 VLOG_ERR_RL(&error_rl,
907 "failed to parse action geneve options type");
908 return EINVAL;
909 }
910
911 opt->type = nl_attr_get_u8(nla);
912 last_opt_type = TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE;
913 break;
914 case TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA:
915 if (last_opt_type != TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE) {
916 VLOG_ERR_RL(&error_rl,
917 "failed to parse action geneve options data");
918 return EINVAL;
919 }
920
921 opt->length = nl_attr_get_size(nla) / 4;
922 memcpy(opt + 1, nl_attr_get_unspec(nla, 1), opt->length * 4);
923 cnt += opt->length;
924 action->encap.data.present.len += opt->length * 4;
925 last_opt_type = TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA;
926 break;
927 }
928 }
929
930 if (last_opt_type != TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA) {
931 VLOG_ERR_RL(&error_rl,
932 "failed to parse action geneve options without data");
933 return EINVAL;
934 }
935
936 return 0;
937 }
938
939 static int
940 nl_parse_act_tunnel_opts(struct nlattr *options, struct tc_action *action)
941 {
942 const struct ofpbuf *msg;
943 struct nlattr *nla;
944 struct ofpbuf buf;
945 size_t left;
946 int err;
947
948 if (!options) {
949 return 0;
950 }
951
952 nl_attr_get_nested(options, &buf);
953 msg = &buf;
954
955 NL_ATTR_FOR_EACH (nla, left, ofpbuf_at(msg, 0, 0), msg->size) {
956 uint16_t type = nl_attr_type(nla);
957 switch (type) {
958 case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
959 err = nl_parse_act_geneve_opts(nla, action);
960 if (err) {
961 return err;
962 }
963
964 break;
965 }
966 }
967
968 return 0;
969 }
970
971 static int
972 nl_parse_act_tunnel_key(struct nlattr *options, struct tc_flower *flower)
973 {
974 struct nlattr *tun_attrs[ARRAY_SIZE(tunnel_key_policy)];
975 const struct nlattr *tun_parms;
976 const struct tc_tunnel_key *tun;
977 struct tc_action *action;
978 int err;
979
980 if (!nl_parse_nested(options, tunnel_key_policy, tun_attrs,
981 ARRAY_SIZE(tunnel_key_policy))) {
982 VLOG_ERR_RL(&error_rl, "failed to parse tunnel_key action options");
983 return EPROTO;
984 }
985
986 tun_parms = tun_attrs[TCA_TUNNEL_KEY_PARMS];
987 tun = nl_attr_get_unspec(tun_parms, sizeof *tun);
988 if (tun->t_action == TCA_TUNNEL_KEY_ACT_SET) {
989 struct nlattr *id = tun_attrs[TCA_TUNNEL_KEY_ENC_KEY_ID];
990 struct nlattr *dst_port = tun_attrs[TCA_TUNNEL_KEY_ENC_DST_PORT];
991 struct nlattr *ipv4_src = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV4_SRC];
992 struct nlattr *ipv4_dst = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV4_DST];
993 struct nlattr *ipv6_src = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV6_SRC];
994 struct nlattr *ipv6_dst = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV6_DST];
995 struct nlattr *tos = tun_attrs[TCA_TUNNEL_KEY_ENC_TOS];
996 struct nlattr *ttl = tun_attrs[TCA_TUNNEL_KEY_ENC_TTL];
997 struct nlattr *tun_opt = tun_attrs[TCA_TUNNEL_KEY_ENC_OPTS];
998
999 action = &flower->actions[flower->action_count++];
1000 action->type = TC_ACT_ENCAP;
1001 action->encap.ipv4.ipv4_src = ipv4_src ? nl_attr_get_be32(ipv4_src) : 0;
1002 action->encap.ipv4.ipv4_dst = ipv4_dst ? nl_attr_get_be32(ipv4_dst) : 0;
1003 if (ipv6_src) {
1004 action->encap.ipv6.ipv6_src = nl_attr_get_in6_addr(ipv6_src);
1005 }
1006 if (ipv6_dst) {
1007 action->encap.ipv6.ipv6_dst = nl_attr_get_in6_addr(ipv6_dst);
1008 }
1009 action->encap.id = id ? be32_to_be64(nl_attr_get_be32(id)) : 0;
1010 action->encap.tp_dst = dst_port ? nl_attr_get_be16(dst_port) : 0;
1011 action->encap.tos = tos ? nl_attr_get_u8(tos) : 0;
1012 action->encap.ttl = ttl ? nl_attr_get_u8(ttl) : 0;
1013
1014 err = nl_parse_act_tunnel_opts(tun_opt, action);
1015 if (err) {
1016 return err;
1017 }
1018 } else if (tun->t_action == TCA_TUNNEL_KEY_ACT_RELEASE) {
1019 flower->tunnel = true;
1020 } else {
1021 VLOG_ERR_RL(&error_rl, "unknown tunnel actions: %d, %d",
1022 tun->action, tun->t_action);
1023 return EINVAL;
1024 }
1025 return 0;
1026 }
1027
1028 static const struct nl_policy gact_policy[] = {
1029 [TCA_GACT_PARMS] = { .type = NL_A_UNSPEC,
1030 .min_len = sizeof(struct tc_gact),
1031 .optional = false, },
1032 [TCA_GACT_TM] = { .type = NL_A_UNSPEC,
1033 .min_len = sizeof(struct tcf_t),
1034 .optional = false, },
1035 };
1036
1037 static int
1038 get_user_hz(void)
1039 {
1040 static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
1041 static int user_hz = 100;
1042
1043 if (ovsthread_once_start(&once)) {
1044 user_hz = sysconf(_SC_CLK_TCK);
1045 ovsthread_once_done(&once);
1046 }
1047
1048 return user_hz;
1049 }
1050
1051 static void
1052 nl_parse_tcf(const struct tcf_t *tm, struct tc_flower *flower)
1053 {
1054 flower->lastused = time_msec() - (tm->lastuse * 1000 / get_user_hz());
1055 }
1056
1057 static int
1058 nl_parse_act_drop(struct nlattr *options, struct tc_flower *flower)
1059 {
1060 struct nlattr *gact_attrs[ARRAY_SIZE(gact_policy)];
1061 const struct tc_gact *p;
1062 struct nlattr *gact_parms;
1063 const struct tcf_t *tm;
1064
1065 if (!nl_parse_nested(options, gact_policy, gact_attrs,
1066 ARRAY_SIZE(gact_policy))) {
1067 VLOG_ERR_RL(&error_rl, "failed to parse gact action options");
1068 return EPROTO;
1069 }
1070
1071 gact_parms = gact_attrs[TCA_GACT_PARMS];
1072 p = nl_attr_get_unspec(gact_parms, sizeof *p);
1073
1074 if (p->action != TC_ACT_SHOT) {
1075 VLOG_ERR_RL(&error_rl, "unknown gact action: %d", p->action);
1076 return EINVAL;
1077 }
1078
1079 tm = nl_attr_get_unspec(gact_attrs[TCA_GACT_TM], sizeof *tm);
1080 nl_parse_tcf(tm, flower);
1081
1082 return 0;
1083 }
1084
1085 static const struct nl_policy mirred_policy[] = {
1086 [TCA_MIRRED_PARMS] = { .type = NL_A_UNSPEC,
1087 .min_len = sizeof(struct tc_mirred),
1088 .optional = false, },
1089 [TCA_MIRRED_TM] = { .type = NL_A_UNSPEC,
1090 .min_len = sizeof(struct tcf_t),
1091 .optional = false, },
1092 };
1093
1094 static int
1095 nl_parse_act_mirred(struct nlattr *options, struct tc_flower *flower)
1096 {
1097
1098 struct nlattr *mirred_attrs[ARRAY_SIZE(mirred_policy)];
1099 const struct tc_mirred *m;
1100 const struct nlattr *mirred_parms;
1101 const struct tcf_t *tm;
1102 struct nlattr *mirred_tm;
1103 struct tc_action *action;
1104
1105 if (!nl_parse_nested(options, mirred_policy, mirred_attrs,
1106 ARRAY_SIZE(mirred_policy))) {
1107 VLOG_ERR_RL(&error_rl, "failed to parse mirred action options");
1108 return EPROTO;
1109 }
1110
1111 mirred_parms = mirred_attrs[TCA_MIRRED_PARMS];
1112 m = nl_attr_get_unspec(mirred_parms, sizeof *m);
1113
1114 if (m->eaction != TCA_EGRESS_REDIR && m->eaction != TCA_EGRESS_MIRROR) {
1115 VLOG_ERR_RL(&error_rl, "unknown mirred action: %d, %d, %d",
1116 m->action, m->eaction, m->ifindex);
1117 return EINVAL;
1118 }
1119
1120 action = &flower->actions[flower->action_count++];
1121 action->ifindex_out = m->ifindex;
1122 action->type = TC_ACT_OUTPUT;
1123
1124 mirred_tm = mirred_attrs[TCA_MIRRED_TM];
1125 tm = nl_attr_get_unspec(mirred_tm, sizeof *tm);
1126 nl_parse_tcf(tm, flower);
1127
1128 return 0;
1129 }
1130
1131 static const struct nl_policy vlan_policy[] = {
1132 [TCA_VLAN_PARMS] = { .type = NL_A_UNSPEC,
1133 .min_len = sizeof(struct tc_vlan),
1134 .optional = false, },
1135 [TCA_VLAN_PUSH_VLAN_ID] = { .type = NL_A_U16, .optional = true, },
1136 [TCA_VLAN_PUSH_VLAN_PROTOCOL] = { .type = NL_A_U16, .optional = true, },
1137 [TCA_VLAN_PUSH_VLAN_PRIORITY] = { .type = NL_A_U8, .optional = true, },
1138 };
1139
1140 static int
1141 nl_parse_act_vlan(struct nlattr *options, struct tc_flower *flower)
1142 {
1143 struct nlattr *vlan_attrs[ARRAY_SIZE(vlan_policy)];
1144 const struct tc_vlan *v;
1145 const struct nlattr *vlan_parms;
1146 struct tc_action *action;
1147
1148 if (!nl_parse_nested(options, vlan_policy, vlan_attrs,
1149 ARRAY_SIZE(vlan_policy))) {
1150 VLOG_ERR_RL(&error_rl, "failed to parse vlan action options");
1151 return EPROTO;
1152 }
1153
1154 action = &flower->actions[flower->action_count++];
1155 vlan_parms = vlan_attrs[TCA_VLAN_PARMS];
1156 v = nl_attr_get_unspec(vlan_parms, sizeof *v);
1157 if (v->v_action == TCA_VLAN_ACT_PUSH) {
1158 struct nlattr *vlan_tpid = vlan_attrs[TCA_VLAN_PUSH_VLAN_PROTOCOL];
1159 struct nlattr *vlan_id = vlan_attrs[TCA_VLAN_PUSH_VLAN_ID];
1160 struct nlattr *vlan_prio = vlan_attrs[TCA_VLAN_PUSH_VLAN_PRIORITY];
1161
1162 action->vlan.vlan_push_tpid = nl_attr_get_be16(vlan_tpid);
1163 action->vlan.vlan_push_id = nl_attr_get_u16(vlan_id);
1164 action->vlan.vlan_push_prio = vlan_prio ? nl_attr_get_u8(vlan_prio) : 0;
1165 action->type = TC_ACT_VLAN_PUSH;
1166 } else if (v->v_action == TCA_VLAN_ACT_POP) {
1167 action->type = TC_ACT_VLAN_POP;
1168 } else {
1169 VLOG_ERR_RL(&error_rl, "unknown vlan action: %d, %d",
1170 v->action, v->v_action);
1171 return EINVAL;
1172 }
1173 return 0;
1174 }
1175
1176 static const struct nl_policy csum_policy[] = {
1177 [TCA_CSUM_PARMS] = { .type = NL_A_UNSPEC,
1178 .min_len = sizeof(struct tc_csum),
1179 .optional = false, },
1180 };
1181
1182 static int
1183 nl_parse_act_csum(struct nlattr *options, struct tc_flower *flower)
1184 {
1185 struct nlattr *csum_attrs[ARRAY_SIZE(csum_policy)];
1186 const struct tc_csum *c;
1187 const struct nlattr *csum_parms;
1188
1189 if (!nl_parse_nested(options, csum_policy, csum_attrs,
1190 ARRAY_SIZE(csum_policy))) {
1191 VLOG_ERR_RL(&error_rl, "failed to parse csum action options");
1192 return EPROTO;
1193 }
1194
1195 csum_parms = csum_attrs[TCA_CSUM_PARMS];
1196 c = nl_attr_get_unspec(csum_parms, sizeof *c);
1197
1198 /* sanity checks */
1199 if (c->update_flags != flower->csum_update_flags) {
1200 VLOG_WARN_RL(&error_rl,
1201 "expected different act csum flags: 0x%x != 0x%x",
1202 flower->csum_update_flags, c->update_flags);
1203 return EINVAL;
1204 }
1205 flower->csum_update_flags = 0; /* so we know csum was handled */
1206
1207 if (flower->needs_full_ip_proto_mask
1208 && flower->mask.ip_proto != UINT8_MAX) {
1209 VLOG_WARN_RL(&error_rl, "expected full matching on flower ip_proto");
1210 return EINVAL;
1211 }
1212
1213 return 0;
1214 }
1215
1216 static const struct nl_policy act_policy[] = {
1217 [TCA_ACT_KIND] = { .type = NL_A_STRING, .optional = false, },
1218 [TCA_ACT_COOKIE] = { .type = NL_A_UNSPEC, .optional = true, },
1219 [TCA_ACT_OPTIONS] = { .type = NL_A_NESTED, .optional = false, },
1220 [TCA_ACT_STATS] = { .type = NL_A_NESTED, .optional = false, },
1221 };
1222
1223 static const struct nl_policy stats_policy[] = {
1224 [TCA_STATS_BASIC] = { .type = NL_A_UNSPEC,
1225 .min_len = sizeof(struct gnet_stats_basic),
1226 .optional = false, },
1227 };
1228
1229 static int
1230 nl_parse_single_action(struct nlattr *action, struct tc_flower *flower)
1231 {
1232 struct nlattr *act_options;
1233 struct nlattr *act_stats;
1234 struct nlattr *act_cookie;
1235 const char *act_kind;
1236 struct nlattr *action_attrs[ARRAY_SIZE(act_policy)];
1237 struct nlattr *stats_attrs[ARRAY_SIZE(stats_policy)];
1238 struct ovs_flow_stats *stats = &flower->stats;
1239 const struct gnet_stats_basic *bs;
1240 int err = 0;
1241
1242 if (!nl_parse_nested(action, act_policy, action_attrs,
1243 ARRAY_SIZE(act_policy))) {
1244 VLOG_ERR_RL(&error_rl, "failed to parse single action options");
1245 return EPROTO;
1246 }
1247
1248 act_kind = nl_attr_get_string(action_attrs[TCA_ACT_KIND]);
1249 act_options = action_attrs[TCA_ACT_OPTIONS];
1250 act_cookie = action_attrs[TCA_ACT_COOKIE];
1251
1252 if (!strcmp(act_kind, "gact")) {
1253 err = nl_parse_act_drop(act_options, flower);
1254 } else if (!strcmp(act_kind, "mirred")) {
1255 err = nl_parse_act_mirred(act_options, flower);
1256 } else if (!strcmp(act_kind, "vlan")) {
1257 err = nl_parse_act_vlan(act_options, flower);
1258 } else if (!strcmp(act_kind, "tunnel_key")) {
1259 err = nl_parse_act_tunnel_key(act_options, flower);
1260 } else if (!strcmp(act_kind, "pedit")) {
1261 err = nl_parse_act_pedit(act_options, flower);
1262 } else if (!strcmp(act_kind, "csum")) {
1263 nl_parse_act_csum(act_options, flower);
1264 } else {
1265 VLOG_ERR_RL(&error_rl, "unknown tc action kind: %s", act_kind);
1266 err = EINVAL;
1267 }
1268
1269 if (err) {
1270 return err;
1271 }
1272
1273 if (act_cookie) {
1274 flower->act_cookie.data = nl_attr_get(act_cookie);
1275 flower->act_cookie.len = nl_attr_get_size(act_cookie);
1276 }
1277
1278 act_stats = action_attrs[TCA_ACT_STATS];
1279
1280 if (!nl_parse_nested(act_stats, stats_policy, stats_attrs,
1281 ARRAY_SIZE(stats_policy))) {
1282 VLOG_ERR_RL(&error_rl, "failed to parse action stats policy");
1283 return EPROTO;
1284 }
1285
1286 bs = nl_attr_get_unspec(stats_attrs[TCA_STATS_BASIC], sizeof *bs);
1287 put_32aligned_u64(&stats->n_packets, bs->packets);
1288 put_32aligned_u64(&stats->n_bytes, bs->bytes);
1289
1290 return 0;
1291 }
1292
1293 #define TCA_ACT_MIN_PRIO 1
1294
1295 static int
1296 nl_parse_flower_actions(struct nlattr **attrs, struct tc_flower *flower)
1297 {
1298 const struct nlattr *actions = attrs[TCA_FLOWER_ACT];
1299 static struct nl_policy actions_orders_policy[TCA_ACT_MAX_PRIO + 1] = {};
1300 struct nlattr *actions_orders[ARRAY_SIZE(actions_orders_policy)];
1301 const int max_size = ARRAY_SIZE(actions_orders_policy);
1302
1303 for (int i = TCA_ACT_MIN_PRIO; i < max_size; i++) {
1304 actions_orders_policy[i].type = NL_A_NESTED;
1305 actions_orders_policy[i].optional = true;
1306 }
1307
1308 if (!nl_parse_nested(actions, actions_orders_policy, actions_orders,
1309 ARRAY_SIZE(actions_orders_policy))) {
1310 VLOG_ERR_RL(&error_rl, "failed to parse flower order of actions");
1311 return EPROTO;
1312 }
1313
1314 for (int i = TCA_ACT_MIN_PRIO; i < max_size; i++) {
1315 if (actions_orders[i]) {
1316 int err;
1317
1318 if (flower->action_count >= TCA_ACT_MAX_PRIO) {
1319 VLOG_DBG_RL(&error_rl, "Can only support %d actions", flower->action_count);
1320 return EOPNOTSUPP;
1321 }
1322 err = nl_parse_single_action(actions_orders[i], flower);
1323
1324 if (err) {
1325 return err;
1326 }
1327 }
1328 }
1329
1330 if (flower->csum_update_flags) {
1331 VLOG_WARN_RL(&error_rl,
1332 "expected act csum with flags: 0x%x",
1333 flower->csum_update_flags);
1334 return EINVAL;
1335 }
1336
1337 return 0;
1338 }
1339
1340 static int
1341 nl_parse_flower_options(struct nlattr *nl_options, struct tc_flower *flower)
1342 {
1343 struct nlattr *attrs[ARRAY_SIZE(tca_flower_policy)];
1344 int err;
1345
1346 if (!nl_parse_nested(nl_options, tca_flower_policy,
1347 attrs, ARRAY_SIZE(tca_flower_policy))) {
1348 VLOG_ERR_RL(&error_rl, "failed to parse flower classifier options");
1349 return EPROTO;
1350 }
1351
1352 nl_parse_flower_eth(attrs, flower);
1353 nl_parse_flower_mpls(attrs, flower);
1354 nl_parse_flower_vlan(attrs, flower);
1355 nl_parse_flower_ip(attrs, flower);
1356 err = nl_parse_flower_tunnel(attrs, flower);
1357 if (err) {
1358 return err;
1359 }
1360
1361 nl_parse_flower_flags(attrs, flower);
1362 return nl_parse_flower_actions(attrs, flower);
1363 }
1364
1365 int
1366 parse_netlink_to_tc_flower(struct ofpbuf *reply, struct tc_flower *flower)
1367 {
1368 struct tcmsg *tc;
1369 struct nlattr *ta[ARRAY_SIZE(tca_policy)];
1370 const char *kind;
1371
1372 if (NLMSG_HDRLEN + sizeof *tc > reply->size) {
1373 return EPROTO;
1374 }
1375
1376 memset(flower, 0, sizeof *flower);
1377
1378 tc = ofpbuf_at_assert(reply, NLMSG_HDRLEN, sizeof *tc);
1379 flower->handle = tc->tcm_handle;
1380 flower->key.eth_type = (OVS_FORCE ovs_be16) tc_get_minor(tc->tcm_info);
1381 flower->mask.eth_type = OVS_BE16_MAX;
1382 flower->prio = tc_get_major(tc->tcm_info);
1383
1384 if (!flower->handle) {
1385 return EAGAIN;
1386 }
1387
1388 if (!nl_policy_parse(reply, NLMSG_HDRLEN + sizeof *tc,
1389 tca_policy, ta, ARRAY_SIZE(ta))) {
1390 VLOG_ERR_RL(&error_rl, "failed to parse tca policy");
1391 return EPROTO;
1392 }
1393
1394 kind = nl_attr_get_string(ta[TCA_KIND]);
1395 if (strcmp(kind, "flower")) {
1396 VLOG_DBG_ONCE("Unsupported filter: %s", kind);
1397 return EPROTO;
1398 }
1399
1400 return nl_parse_flower_options(ta[TCA_OPTIONS], flower);
1401 }
1402
1403 int
1404 tc_dump_flower_start(int ifindex, struct nl_dump *dump, uint32_t block_id)
1405 {
1406 struct ofpbuf request;
1407 struct tcmsg *tcmsg;
1408 int index;
1409
1410 index = block_id ? TCM_IFINDEX_MAGIC_BLOCK : ifindex;
1411 tcmsg = tc_make_request(index, RTM_GETTFILTER, NLM_F_DUMP, &request);
1412 tcmsg->tcm_parent = block_id ? : TC_INGRESS_PARENT;
1413 tcmsg->tcm_info = TC_H_UNSPEC;
1414 tcmsg->tcm_handle = 0;
1415
1416 nl_dump_start(dump, NETLINK_ROUTE, &request);
1417 ofpbuf_uninit(&request);
1418
1419 return 0;
1420 }
1421
1422 int
1423 tc_flush(int ifindex, uint32_t block_id)
1424 {
1425 struct ofpbuf request;
1426 struct tcmsg *tcmsg;
1427 int index;
1428
1429 index = block_id ? TCM_IFINDEX_MAGIC_BLOCK : ifindex;
1430 tcmsg = tc_make_request(index, RTM_DELTFILTER, NLM_F_ACK, &request);
1431 tcmsg->tcm_parent = block_id ? : TC_INGRESS_PARENT;
1432 tcmsg->tcm_info = TC_H_UNSPEC;
1433
1434 return tc_transact(&request, NULL);
1435 }
1436
1437 int
1438 tc_del_filter(int ifindex, int prio, int handle, uint32_t block_id)
1439 {
1440 struct ofpbuf request;
1441 struct tcmsg *tcmsg;
1442 struct ofpbuf *reply;
1443 int error;
1444 int index;
1445
1446 index = block_id ? TCM_IFINDEX_MAGIC_BLOCK : ifindex;
1447 tcmsg = tc_make_request(index, RTM_DELTFILTER, NLM_F_ECHO, &request);
1448 tcmsg->tcm_parent = block_id ? : TC_INGRESS_PARENT;
1449 tcmsg->tcm_info = tc_make_handle(prio, 0);
1450 tcmsg->tcm_handle = handle;
1451
1452 error = tc_transact(&request, &reply);
1453 if (!error) {
1454 ofpbuf_delete(reply);
1455 }
1456 return error;
1457 }
1458
1459 int
1460 tc_get_flower(int ifindex, int prio, int handle, struct tc_flower *flower,
1461 uint32_t block_id)
1462 {
1463 struct ofpbuf request;
1464 struct tcmsg *tcmsg;
1465 struct ofpbuf *reply;
1466 int error;
1467 int index;
1468
1469 index = block_id ? TCM_IFINDEX_MAGIC_BLOCK : ifindex;
1470 tcmsg = tc_make_request(index, RTM_GETTFILTER, NLM_F_ECHO, &request);
1471 tcmsg->tcm_parent = block_id ? : TC_INGRESS_PARENT;
1472 tcmsg->tcm_info = tc_make_handle(prio, 0);
1473 tcmsg->tcm_handle = handle;
1474
1475 error = tc_transact(&request, &reply);
1476 if (error) {
1477 return error;
1478 }
1479
1480 error = parse_netlink_to_tc_flower(reply, flower);
1481 ofpbuf_delete(reply);
1482 return error;
1483 }
1484
1485 static int
1486 tc_get_tc_cls_policy(enum tc_offload_policy policy)
1487 {
1488 if (policy == TC_POLICY_SKIP_HW) {
1489 return TCA_CLS_FLAGS_SKIP_HW;
1490 } else if (policy == TC_POLICY_SKIP_SW) {
1491 return TCA_CLS_FLAGS_SKIP_SW;
1492 }
1493
1494 return 0;
1495 }
1496
1497 static void
1498 nl_msg_put_act_csum(struct ofpbuf *request, uint32_t flags)
1499 {
1500 size_t offset;
1501
1502 nl_msg_put_string(request, TCA_ACT_KIND, "csum");
1503 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1504 {
1505 struct tc_csum parm = { .action = TC_ACT_PIPE,
1506 .update_flags = flags };
1507
1508 nl_msg_put_unspec(request, TCA_CSUM_PARMS, &parm, sizeof parm);
1509 }
1510 nl_msg_end_nested(request, offset);
1511 }
1512
1513 static void
1514 nl_msg_put_act_pedit(struct ofpbuf *request, struct tc_pedit *parm,
1515 struct tc_pedit_key_ex *ex)
1516 {
1517 size_t ksize = sizeof *parm + parm->nkeys * sizeof(struct tc_pedit_key);
1518 size_t offset, offset_keys_ex, offset_key;
1519 int i;
1520
1521 nl_msg_put_string(request, TCA_ACT_KIND, "pedit");
1522 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1523 {
1524 parm->action = TC_ACT_PIPE;
1525
1526 nl_msg_put_unspec(request, TCA_PEDIT_PARMS_EX, parm, ksize);
1527 offset_keys_ex = nl_msg_start_nested(request, TCA_PEDIT_KEYS_EX);
1528 for (i = 0; i < parm->nkeys; i++, ex++) {
1529 offset_key = nl_msg_start_nested(request, TCA_PEDIT_KEY_EX);
1530 nl_msg_put_u16(request, TCA_PEDIT_KEY_EX_HTYPE, ex->htype);
1531 nl_msg_put_u16(request, TCA_PEDIT_KEY_EX_CMD, ex->cmd);
1532 nl_msg_end_nested(request, offset_key);
1533 }
1534 nl_msg_end_nested(request, offset_keys_ex);
1535 }
1536 nl_msg_end_nested(request, offset);
1537 }
1538
1539 static void
1540 nl_msg_put_act_push_vlan(struct ofpbuf *request, ovs_be16 tpid,
1541 uint16_t vid, uint8_t prio)
1542 {
1543 size_t offset;
1544
1545 nl_msg_put_string(request, TCA_ACT_KIND, "vlan");
1546 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1547 {
1548 struct tc_vlan parm = { .action = TC_ACT_PIPE,
1549 .v_action = TCA_VLAN_ACT_PUSH };
1550
1551 nl_msg_put_unspec(request, TCA_VLAN_PARMS, &parm, sizeof parm);
1552 nl_msg_put_be16(request, TCA_VLAN_PUSH_VLAN_PROTOCOL, tpid);
1553 nl_msg_put_u16(request, TCA_VLAN_PUSH_VLAN_ID, vid);
1554 nl_msg_put_u8(request, TCA_VLAN_PUSH_VLAN_PRIORITY, prio);
1555 }
1556 nl_msg_end_nested(request, offset);
1557 }
1558
1559 static void
1560 nl_msg_put_act_pop_vlan(struct ofpbuf *request)
1561 {
1562 size_t offset;
1563
1564 nl_msg_put_string(request, TCA_ACT_KIND, "vlan");
1565 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1566 {
1567 struct tc_vlan parm = { .action = TC_ACT_PIPE,
1568 .v_action = TCA_VLAN_ACT_POP };
1569
1570 nl_msg_put_unspec(request, TCA_VLAN_PARMS, &parm, sizeof parm);
1571 }
1572 nl_msg_end_nested(request, offset);
1573 }
1574
1575 static void
1576 nl_msg_put_act_tunnel_key_release(struct ofpbuf *request)
1577 {
1578 size_t offset;
1579
1580 nl_msg_put_string(request, TCA_ACT_KIND, "tunnel_key");
1581 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1582 {
1583 struct tc_tunnel_key tun = { .action = TC_ACT_PIPE,
1584 .t_action = TCA_TUNNEL_KEY_ACT_RELEASE };
1585
1586 nl_msg_put_unspec(request, TCA_TUNNEL_KEY_PARMS, &tun, sizeof tun);
1587 }
1588 nl_msg_end_nested(request, offset);
1589 }
1590
1591 static void
1592 nl_msg_put_act_tunnel_geneve_option(struct ofpbuf *request,
1593 struct tun_metadata tun_metadata)
1594 {
1595 const struct geneve_opt *opt;
1596 size_t outer, inner;
1597 int len, cnt = 0;
1598
1599 len = tun_metadata.present.len;
1600 if (!len) {
1601 return;
1602 }
1603
1604 outer = nl_msg_start_nested(request, TCA_TUNNEL_KEY_ENC_OPTS);
1605
1606 while (len) {
1607 opt = &tun_metadata.opts.gnv[cnt];
1608 inner = nl_msg_start_nested(request, TCA_TUNNEL_KEY_ENC_OPTS_GENEVE);
1609
1610 nl_msg_put_be16(request, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS,
1611 opt->opt_class);
1612 nl_msg_put_u8(request, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE, opt->type);
1613 nl_msg_put_unspec(request, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA, opt + 1,
1614 opt->length * 4);
1615
1616 cnt += sizeof(struct geneve_opt) / 4 + opt->length;
1617 len -= sizeof(struct geneve_opt) + opt->length * 4;
1618
1619 nl_msg_end_nested(request, inner);
1620 }
1621
1622 nl_msg_end_nested(request, outer);
1623 }
1624
1625 static void
1626 nl_msg_put_act_tunnel_key_set(struct ofpbuf *request, ovs_be64 id,
1627 ovs_be32 ipv4_src, ovs_be32 ipv4_dst,
1628 struct in6_addr *ipv6_src,
1629 struct in6_addr *ipv6_dst,
1630 ovs_be16 tp_dst, uint8_t tos, uint8_t ttl,
1631 struct tun_metadata tun_metadata)
1632 {
1633 size_t offset;
1634
1635 nl_msg_put_string(request, TCA_ACT_KIND, "tunnel_key");
1636 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1637 {
1638 struct tc_tunnel_key tun = { .action = TC_ACT_PIPE,
1639 .t_action = TCA_TUNNEL_KEY_ACT_SET };
1640
1641 nl_msg_put_unspec(request, TCA_TUNNEL_KEY_PARMS, &tun, sizeof tun);
1642
1643 ovs_be32 id32 = be64_to_be32(id);
1644 nl_msg_put_be32(request, TCA_TUNNEL_KEY_ENC_KEY_ID, id32);
1645 if (ipv4_dst) {
1646 nl_msg_put_be32(request, TCA_TUNNEL_KEY_ENC_IPV4_SRC, ipv4_src);
1647 nl_msg_put_be32(request, TCA_TUNNEL_KEY_ENC_IPV4_DST, ipv4_dst);
1648 } else if (!is_all_zeros(ipv6_dst, sizeof *ipv6_dst)) {
1649 nl_msg_put_in6_addr(request, TCA_TUNNEL_KEY_ENC_IPV6_DST,
1650 ipv6_dst);
1651 nl_msg_put_in6_addr(request, TCA_TUNNEL_KEY_ENC_IPV6_SRC,
1652 ipv6_src);
1653 }
1654 if (tos) {
1655 nl_msg_put_u8(request, TCA_TUNNEL_KEY_ENC_TOS, tos);
1656 }
1657 if (ttl) {
1658 nl_msg_put_u8(request, TCA_TUNNEL_KEY_ENC_TTL, ttl);
1659 }
1660 nl_msg_put_be16(request, TCA_TUNNEL_KEY_ENC_DST_PORT, tp_dst);
1661 nl_msg_put_act_tunnel_geneve_option(request, tun_metadata);
1662 }
1663 nl_msg_end_nested(request, offset);
1664 }
1665
1666 static void
1667 nl_msg_put_act_drop(struct ofpbuf *request)
1668 {
1669 size_t offset;
1670
1671 nl_msg_put_string(request, TCA_ACT_KIND, "gact");
1672 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1673 {
1674 struct tc_gact p = { .action = TC_ACT_SHOT };
1675
1676 nl_msg_put_unspec(request, TCA_GACT_PARMS, &p, sizeof p);
1677 }
1678 nl_msg_end_nested(request, offset);
1679 }
1680
1681 static void
1682 nl_msg_put_act_mirred(struct ofpbuf *request, int ifindex, int action,
1683 int eaction)
1684 {
1685 size_t offset;
1686
1687 nl_msg_put_string(request, TCA_ACT_KIND, "mirred");
1688 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1689 {
1690 struct tc_mirred m = { .action = action,
1691 .eaction = eaction,
1692 .ifindex = ifindex };
1693
1694 nl_msg_put_unspec(request, TCA_MIRRED_PARMS, &m, sizeof m);
1695 }
1696 nl_msg_end_nested(request, offset);
1697 }
1698
1699 static inline void
1700 nl_msg_put_act_cookie(struct ofpbuf *request, struct tc_cookie *ck) {
1701 if (ck->len) {
1702 nl_msg_put_unspec(request, TCA_ACT_COOKIE, ck->data, ck->len);
1703 }
1704 }
1705
1706 /* Given flower, a key_to_pedit map entry, calculates the rest,
1707 * where:
1708 *
1709 * mask, data - pointers of where read the first word of flower->key/mask.
1710 * current_offset - which offset to use for the first pedit action.
1711 * cnt - max pedits actions to use.
1712 * first_word_mask/last_word_mask - the mask to use for the first/last read
1713 * (as we read entire words). */
1714 static void
1715 calc_offsets(struct tc_flower *flower, struct flower_key_to_pedit *m,
1716 int *cur_offset, int *cnt, uint32_t *last_word_mask,
1717 uint32_t *first_word_mask, uint32_t **mask, uint32_t **data)
1718 {
1719 int start_offset, max_offset, total_size;
1720 int diff, right_zero_bits, left_zero_bits;
1721 char *rewrite_key = (void *) &flower->rewrite.key;
1722 char *rewrite_mask = (void *) &flower->rewrite.mask;
1723
1724 max_offset = m->offset + m->size;
1725 start_offset = ROUND_DOWN(m->offset, 4);
1726 diff = m->offset - start_offset;
1727 total_size = max_offset - start_offset;
1728 right_zero_bits = 8 * (4 - (max_offset % 4));
1729 left_zero_bits = 8 * (m->offset - start_offset);
1730
1731 *cur_offset = start_offset;
1732 *cnt = (total_size / 4) + (total_size % 4 ? 1 : 0);
1733 *last_word_mask = UINT32_MAX >> right_zero_bits;
1734 *first_word_mask = UINT32_MAX << left_zero_bits;
1735 *data = (void *) (rewrite_key + m->flower_offset - diff);
1736 *mask = (void *) (rewrite_mask + m->flower_offset - diff);
1737 }
1738
1739 static inline int
1740 csum_update_flag(struct tc_flower *flower,
1741 enum pedit_header_type htype) {
1742 /* Explictily specifiy the csum flags so HW can return EOPNOTSUPP
1743 * if it doesn't support a checksum recalculation of some headers.
1744 * And since OVS allows a flow such as
1745 * eth(dst=<mac>),eth_type(0x0800) actions=set(ipv4(src=<new_ip>))
1746 * we need to force a more specific flow as this can, for example,
1747 * need a recalculation of icmp checksum if the packet that passes
1748 * is ICMPv6 and tcp checksum if its tcp. */
1749
1750 switch (htype) {
1751 case TCA_PEDIT_KEY_EX_HDR_TYPE_IP4:
1752 flower->csum_update_flags |= TCA_CSUM_UPDATE_FLAG_IPV4HDR;
1753 /* Fall through. */
1754 case TCA_PEDIT_KEY_EX_HDR_TYPE_IP6:
1755 case TCA_PEDIT_KEY_EX_HDR_TYPE_TCP:
1756 case TCA_PEDIT_KEY_EX_HDR_TYPE_UDP:
1757 if (flower->key.ip_proto == IPPROTO_TCP) {
1758 flower->needs_full_ip_proto_mask = true;
1759 flower->csum_update_flags |= TCA_CSUM_UPDATE_FLAG_TCP;
1760 } else if (flower->key.ip_proto == IPPROTO_UDP) {
1761 flower->needs_full_ip_proto_mask = true;
1762 flower->csum_update_flags |= TCA_CSUM_UPDATE_FLAG_UDP;
1763 } else if (flower->key.ip_proto == IPPROTO_ICMP) {
1764 flower->needs_full_ip_proto_mask = true;
1765 } else if (flower->key.ip_proto == IPPROTO_ICMPV6) {
1766 flower->needs_full_ip_proto_mask = true;
1767 flower->csum_update_flags |= TCA_CSUM_UPDATE_FLAG_ICMP;
1768 } else {
1769 VLOG_WARN_RL(&error_rl,
1770 "can't offload rewrite of IP/IPV6 with ip_proto: %d",
1771 flower->key.ip_proto);
1772 break;
1773 }
1774 /* Fall through. */
1775 case TCA_PEDIT_KEY_EX_HDR_TYPE_ETH:
1776 return 0; /* success */
1777
1778 case TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK:
1779 case __PEDIT_HDR_TYPE_MAX:
1780 default:
1781 break;
1782 }
1783
1784 return EOPNOTSUPP;
1785 }
1786
1787 static int
1788 nl_msg_put_flower_rewrite_pedits(struct ofpbuf *request,
1789 struct tc_flower *flower)
1790 {
1791 struct {
1792 struct tc_pedit sel;
1793 struct tc_pedit_key keys[MAX_PEDIT_OFFSETS];
1794 struct tc_pedit_key_ex keys_ex[MAX_PEDIT_OFFSETS];
1795 } sel = {
1796 .sel = {
1797 .nkeys = 0
1798 }
1799 };
1800 int i, j, err;
1801
1802 for (i = 0; i < ARRAY_SIZE(flower_pedit_map); i++) {
1803 struct flower_key_to_pedit *m = &flower_pedit_map[i];
1804 struct tc_pedit_key *pedit_key = NULL;
1805 struct tc_pedit_key_ex *pedit_key_ex = NULL;
1806 uint32_t *mask, *data, first_word_mask, last_word_mask;
1807 int cnt = 0, cur_offset = 0;
1808
1809 if (!m->size) {
1810 continue;
1811 }
1812
1813 calc_offsets(flower, m, &cur_offset, &cnt, &last_word_mask,
1814 &first_word_mask, &mask, &data);
1815
1816 for (j = 0; j < cnt; j++, mask++, data++, cur_offset += 4) {
1817 uint32_t mask_word = *mask;
1818
1819 if (j == 0) {
1820 mask_word &= first_word_mask;
1821 }
1822 if (j == cnt - 1) {
1823 mask_word &= last_word_mask;
1824 }
1825 if (!mask_word) {
1826 continue;
1827 }
1828 if (sel.sel.nkeys == MAX_PEDIT_OFFSETS) {
1829 VLOG_WARN_RL(&error_rl, "reached too many pedit offsets: %d",
1830 MAX_PEDIT_OFFSETS);
1831 return EOPNOTSUPP;
1832 }
1833
1834 pedit_key = &sel.keys[sel.sel.nkeys];
1835 pedit_key_ex = &sel.keys_ex[sel.sel.nkeys];
1836 pedit_key_ex->cmd = TCA_PEDIT_KEY_EX_CMD_SET;
1837 pedit_key_ex->htype = m->htype;
1838 pedit_key->off = cur_offset;
1839 pedit_key->mask = ~mask_word;
1840 pedit_key->val = *data & mask_word;
1841 sel.sel.nkeys++;
1842
1843 err = csum_update_flag(flower, m->htype);
1844 if (err) {
1845 return err;
1846 }
1847
1848 if (flower->needs_full_ip_proto_mask) {
1849 flower->mask.ip_proto = UINT8_MAX;
1850 }
1851 }
1852 }
1853 nl_msg_put_act_pedit(request, &sel.sel, sel.keys_ex);
1854
1855 return 0;
1856 }
1857
1858 static int
1859 nl_msg_put_flower_acts(struct ofpbuf *request, struct tc_flower *flower)
1860 {
1861 size_t offset;
1862 size_t act_offset;
1863 uint16_t act_index = 1;
1864 struct tc_action *action;
1865 int i, ifindex = 0;
1866
1867 offset = nl_msg_start_nested(request, TCA_FLOWER_ACT);
1868 {
1869 int error;
1870
1871 if (flower->tunnel) {
1872 act_offset = nl_msg_start_nested(request, act_index++);
1873 nl_msg_put_act_tunnel_key_release(request);
1874 nl_msg_end_nested(request, act_offset);
1875 }
1876
1877 action = flower->actions;
1878 for (i = 0; i < flower->action_count; i++, action++) {
1879 switch (action->type) {
1880 case TC_ACT_PEDIT: {
1881 act_offset = nl_msg_start_nested(request, act_index++);
1882 error = nl_msg_put_flower_rewrite_pedits(request, flower);
1883 if (error) {
1884 return error;
1885 }
1886 nl_msg_end_nested(request, act_offset);
1887
1888 if (flower->csum_update_flags) {
1889 act_offset = nl_msg_start_nested(request, act_index++);
1890 nl_msg_put_act_csum(request, flower->csum_update_flags);
1891 nl_msg_end_nested(request, act_offset);
1892 }
1893 }
1894 break;
1895 case TC_ACT_ENCAP: {
1896 act_offset = nl_msg_start_nested(request, act_index++);
1897 nl_msg_put_act_tunnel_key_set(request, action->encap.id,
1898 action->encap.ipv4.ipv4_src,
1899 action->encap.ipv4.ipv4_dst,
1900 &action->encap.ipv6.ipv6_src,
1901 &action->encap.ipv6.ipv6_dst,
1902 action->encap.tp_dst,
1903 action->encap.tos,
1904 action->encap.ttl,
1905 action->encap.data);
1906 nl_msg_end_nested(request, act_offset);
1907 }
1908 break;
1909 case TC_ACT_VLAN_POP: {
1910 act_offset = nl_msg_start_nested(request, act_index++);
1911 nl_msg_put_act_pop_vlan(request);
1912 nl_msg_end_nested(request, act_offset);
1913 }
1914 break;
1915 case TC_ACT_VLAN_PUSH: {
1916 act_offset = nl_msg_start_nested(request, act_index++);
1917 nl_msg_put_act_push_vlan(request,
1918 action->vlan.vlan_push_tpid,
1919 action->vlan.vlan_push_id,
1920 action->vlan.vlan_push_prio);
1921 nl_msg_end_nested(request, act_offset);
1922 }
1923 break;
1924 case TC_ACT_OUTPUT: {
1925 ifindex = action->ifindex_out;
1926 if (ifindex < 1) {
1927 VLOG_ERR_RL(&error_rl, "%s: invalid ifindex: %d, type: %d",
1928 __func__, ifindex, action->type);
1929 return EINVAL;
1930 }
1931 act_offset = nl_msg_start_nested(request, act_index++);
1932 if (i == flower->action_count - 1) {
1933 nl_msg_put_act_mirred(request, ifindex, TC_ACT_STOLEN,
1934 TCA_EGRESS_REDIR);
1935 } else {
1936 nl_msg_put_act_mirred(request, ifindex, TC_ACT_PIPE,
1937 TCA_EGRESS_MIRROR);
1938 }
1939 nl_msg_put_act_cookie(request, &flower->act_cookie);
1940 nl_msg_end_nested(request, act_offset);
1941 }
1942 break;
1943 }
1944 }
1945 }
1946 if (!ifindex) {
1947 act_offset = nl_msg_start_nested(request, act_index++);
1948 nl_msg_put_act_drop(request);
1949 nl_msg_put_act_cookie(request, &flower->act_cookie);
1950 nl_msg_end_nested(request, act_offset);
1951 }
1952 nl_msg_end_nested(request, offset);
1953
1954 return 0;
1955 }
1956
1957 static void
1958 nl_msg_put_masked_value(struct ofpbuf *request, uint16_t type,
1959 uint16_t mask_type, const void *data,
1960 const void *mask_data, size_t len)
1961 {
1962 if (mask_type != TCA_FLOWER_UNSPEC) {
1963 if (is_all_zeros(mask_data, len)) {
1964 return;
1965 }
1966 nl_msg_put_unspec(request, mask_type, mask_data, len);
1967 }
1968 nl_msg_put_unspec(request, type, data, len);
1969 }
1970
1971 static void
1972 nl_msg_put_flower_tunnel_opts(struct ofpbuf *request, uint16_t type,
1973 struct tun_metadata metadata)
1974 {
1975 struct geneve_opt *opt;
1976 size_t outer, inner;
1977 int len, cnt = 0;
1978
1979 len = metadata.present.len;
1980 if (!len) {
1981 return;
1982 }
1983
1984 outer = nl_msg_start_nested(request, type);
1985 while (len) {
1986 opt = &metadata.opts.gnv[cnt];
1987 inner = nl_msg_start_nested(request, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
1988
1989 nl_msg_put_be16(request, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
1990 opt->opt_class);
1991 nl_msg_put_u8(request, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE, opt->type);
1992 nl_msg_put_unspec(request, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA, opt + 1,
1993 opt->length * 4);
1994
1995 cnt += sizeof(struct geneve_opt) / 4 + opt->length;
1996 len -= sizeof(struct geneve_opt) + opt->length * 4;
1997
1998 nl_msg_end_nested(request, inner);
1999 }
2000 nl_msg_end_nested(request, outer);
2001 }
2002
2003 static void
2004 nl_msg_put_flower_tunnel(struct ofpbuf *request, struct tc_flower *flower)
2005 {
2006 ovs_be32 ipv4_src = flower->key.tunnel.ipv4.ipv4_src;
2007 ovs_be32 ipv4_dst = flower->key.tunnel.ipv4.ipv4_dst;
2008 struct in6_addr *ipv6_src = &flower->key.tunnel.ipv6.ipv6_src;
2009 struct in6_addr *ipv6_dst = &flower->key.tunnel.ipv6.ipv6_dst;
2010 ovs_be16 tp_dst = flower->key.tunnel.tp_dst;
2011 ovs_be32 id = be64_to_be32(flower->key.tunnel.id);
2012 uint8_t tos = flower->key.tunnel.tos;
2013 uint8_t ttl = flower->key.tunnel.ttl;
2014 uint8_t tos_mask = flower->mask.tunnel.tos;
2015 uint8_t ttl_mask = flower->mask.tunnel.ttl;
2016
2017 if (ipv4_dst) {
2018 nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_IPV4_SRC, ipv4_src);
2019 nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_IPV4_DST, ipv4_dst);
2020 } else if (!is_all_zeros(ipv6_dst, sizeof *ipv6_dst)) {
2021 nl_msg_put_in6_addr(request, TCA_FLOWER_KEY_ENC_IPV6_SRC, ipv6_src);
2022 nl_msg_put_in6_addr(request, TCA_FLOWER_KEY_ENC_IPV6_DST, ipv6_dst);
2023 }
2024 if (tos_mask) {
2025 nl_msg_put_u8(request, TCA_FLOWER_KEY_ENC_IP_TOS, tos);
2026 nl_msg_put_u8(request, TCA_FLOWER_KEY_ENC_IP_TOS_MASK, tos_mask);
2027 }
2028 if (ttl_mask) {
2029 nl_msg_put_u8(request, TCA_FLOWER_KEY_ENC_IP_TTL, ttl);
2030 nl_msg_put_u8(request, TCA_FLOWER_KEY_ENC_IP_TTL_MASK, ttl_mask);
2031 }
2032 nl_msg_put_be16(request, TCA_FLOWER_KEY_ENC_UDP_DST_PORT, tp_dst);
2033 nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_KEY_ID, id);
2034 nl_msg_put_flower_tunnel_opts(request, TCA_FLOWER_KEY_ENC_OPTS,
2035 flower->key.tunnel.metadata);
2036 nl_msg_put_flower_tunnel_opts(request, TCA_FLOWER_KEY_ENC_OPTS_MASK,
2037 flower->mask.tunnel.metadata);
2038 }
2039
2040 #define FLOWER_PUT_MASKED_VALUE(member, type) \
2041 nl_msg_put_masked_value(request, type, type##_MASK, &flower->key.member, \
2042 &flower->mask.member, sizeof flower->key.member)
2043
2044 static int
2045 nl_msg_put_flower_options(struct ofpbuf *request, struct tc_flower *flower)
2046 {
2047
2048 uint16_t host_eth_type = ntohs(flower->key.eth_type);
2049 bool is_vlan = eth_type_vlan(flower->key.eth_type);
2050 bool is_qinq = is_vlan && eth_type_vlan(flower->key.encap_eth_type[0]);
2051 bool is_mpls = eth_type_mpls(flower->key.eth_type);
2052 int err;
2053
2054 /* need to parse acts first as some acts require changing the matching
2055 * see csum_update_flag() */
2056 err = nl_msg_put_flower_acts(request, flower);
2057 if (err) {
2058 return err;
2059 }
2060
2061 if (is_vlan) {
2062 if (is_qinq) {
2063 host_eth_type = ntohs(flower->key.encap_eth_type[1]);
2064 } else {
2065 host_eth_type = ntohs(flower->key.encap_eth_type[0]);
2066 }
2067 }
2068
2069 if (is_mpls) {
2070 host_eth_type = ntohs(flower->key.encap_eth_type[0]);
2071 }
2072
2073 FLOWER_PUT_MASKED_VALUE(dst_mac, TCA_FLOWER_KEY_ETH_DST);
2074 FLOWER_PUT_MASKED_VALUE(src_mac, TCA_FLOWER_KEY_ETH_SRC);
2075
2076 if (host_eth_type == ETH_P_IP || host_eth_type == ETH_P_IPV6) {
2077 FLOWER_PUT_MASKED_VALUE(ip_ttl, TCA_FLOWER_KEY_IP_TTL);
2078 FLOWER_PUT_MASKED_VALUE(ip_tos, TCA_FLOWER_KEY_IP_TOS);
2079
2080 if (flower->mask.ip_proto && flower->key.ip_proto) {
2081 nl_msg_put_u8(request, TCA_FLOWER_KEY_IP_PROTO,
2082 flower->key.ip_proto);
2083 }
2084
2085 if (flower->mask.flags) {
2086 nl_msg_put_be32(request, TCA_FLOWER_KEY_FLAGS,
2087 htonl(flower->key.flags));
2088 nl_msg_put_be32(request, TCA_FLOWER_KEY_FLAGS_MASK,
2089 htonl(flower->mask.flags));
2090 }
2091
2092 if (flower->key.ip_proto == IPPROTO_UDP) {
2093 FLOWER_PUT_MASKED_VALUE(udp_src, TCA_FLOWER_KEY_UDP_SRC);
2094 FLOWER_PUT_MASKED_VALUE(udp_dst, TCA_FLOWER_KEY_UDP_DST);
2095 } else if (flower->key.ip_proto == IPPROTO_TCP) {
2096 FLOWER_PUT_MASKED_VALUE(tcp_src, TCA_FLOWER_KEY_TCP_SRC);
2097 FLOWER_PUT_MASKED_VALUE(tcp_dst, TCA_FLOWER_KEY_TCP_DST);
2098 FLOWER_PUT_MASKED_VALUE(tcp_flags, TCA_FLOWER_KEY_TCP_FLAGS);
2099 } else if (flower->key.ip_proto == IPPROTO_SCTP) {
2100 FLOWER_PUT_MASKED_VALUE(sctp_src, TCA_FLOWER_KEY_SCTP_SRC);
2101 FLOWER_PUT_MASKED_VALUE(sctp_dst, TCA_FLOWER_KEY_SCTP_DST);
2102 }
2103 }
2104
2105 if (host_eth_type == ETH_P_IP) {
2106 FLOWER_PUT_MASKED_VALUE(ipv4.ipv4_src, TCA_FLOWER_KEY_IPV4_SRC);
2107 FLOWER_PUT_MASKED_VALUE(ipv4.ipv4_dst, TCA_FLOWER_KEY_IPV4_DST);
2108 } else if (host_eth_type == ETH_P_IPV6) {
2109 FLOWER_PUT_MASKED_VALUE(ipv6.ipv6_src, TCA_FLOWER_KEY_IPV6_SRC);
2110 FLOWER_PUT_MASKED_VALUE(ipv6.ipv6_dst, TCA_FLOWER_KEY_IPV6_DST);
2111 }
2112
2113 nl_msg_put_be16(request, TCA_FLOWER_KEY_ETH_TYPE, flower->key.eth_type);
2114
2115 if (is_mpls) {
2116 if (mpls_lse_to_ttl(flower->mask.mpls_lse)) {
2117 nl_msg_put_u8(request, TCA_FLOWER_KEY_MPLS_TTL,
2118 mpls_lse_to_ttl(flower->key.mpls_lse));
2119 }
2120 if (mpls_lse_to_tc(flower->mask.mpls_lse)) {
2121 nl_msg_put_u8(request, TCA_FLOWER_KEY_MPLS_TC,
2122 mpls_lse_to_tc(flower->key.mpls_lse));
2123 }
2124 if (mpls_lse_to_bos(flower->mask.mpls_lse)) {
2125 nl_msg_put_u8(request, TCA_FLOWER_KEY_MPLS_BOS,
2126 mpls_lse_to_bos(flower->key.mpls_lse));
2127 }
2128 if (mpls_lse_to_label(flower->mask.mpls_lse)) {
2129 nl_msg_put_u32(request, TCA_FLOWER_KEY_MPLS_LABEL,
2130 mpls_lse_to_label(flower->key.mpls_lse));
2131 }
2132 }
2133
2134 if (is_vlan) {
2135 if (flower->mask.vlan_id[0]) {
2136 nl_msg_put_u16(request, TCA_FLOWER_KEY_VLAN_ID,
2137 flower->key.vlan_id[0]);
2138 }
2139 if (flower->mask.vlan_prio[0]) {
2140 nl_msg_put_u8(request, TCA_FLOWER_KEY_VLAN_PRIO,
2141 flower->key.vlan_prio[0]);
2142 }
2143 if (flower->key.encap_eth_type[0]) {
2144 nl_msg_put_be16(request, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2145 flower->key.encap_eth_type[0]);
2146 }
2147
2148 if (is_qinq) {
2149 if (flower->mask.vlan_id[1]) {
2150 nl_msg_put_u16(request, TCA_FLOWER_KEY_CVLAN_ID,
2151 flower->key.vlan_id[1]);
2152 }
2153 if (flower->mask.vlan_prio[1]) {
2154 nl_msg_put_u8(request, TCA_FLOWER_KEY_CVLAN_PRIO,
2155 flower->key.vlan_prio[1]);
2156 }
2157 if (flower->key.encap_eth_type[1]) {
2158 nl_msg_put_be16(request, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
2159 flower->key.encap_eth_type[1]);
2160 }
2161 }
2162 }
2163
2164 nl_msg_put_u32(request, TCA_FLOWER_FLAGS, tc_get_tc_cls_policy(tc_policy));
2165
2166 if (flower->tunnel) {
2167 nl_msg_put_flower_tunnel(request, flower);
2168 }
2169
2170 return 0;
2171 }
2172
2173 int
2174 tc_replace_flower(int ifindex, uint16_t prio, uint32_t handle,
2175 struct tc_flower *flower, uint32_t block_id)
2176 {
2177 struct ofpbuf request;
2178 struct tcmsg *tcmsg;
2179 struct ofpbuf *reply;
2180 int error = 0;
2181 size_t basic_offset;
2182 uint16_t eth_type = (OVS_FORCE uint16_t) flower->key.eth_type;
2183 int index;
2184
2185 index = block_id ? TCM_IFINDEX_MAGIC_BLOCK : ifindex;
2186 tcmsg = tc_make_request(index, RTM_NEWTFILTER, NLM_F_CREATE | NLM_F_ECHO,
2187 &request);
2188 tcmsg->tcm_parent = block_id ? : TC_INGRESS_PARENT;
2189 tcmsg->tcm_info = tc_make_handle(prio, eth_type);
2190 tcmsg->tcm_handle = handle;
2191
2192 nl_msg_put_string(&request, TCA_KIND, "flower");
2193 basic_offset = nl_msg_start_nested(&request, TCA_OPTIONS);
2194 {
2195 error = nl_msg_put_flower_options(&request, flower);
2196
2197 if (error) {
2198 ofpbuf_uninit(&request);
2199 return error;
2200 }
2201 }
2202 nl_msg_end_nested(&request, basic_offset);
2203
2204 error = tc_transact(&request, &reply);
2205 if (!error) {
2206 struct tcmsg *tc =
2207 ofpbuf_at_assert(reply, NLMSG_HDRLEN, sizeof *tc);
2208
2209 flower->prio = tc_get_major(tc->tcm_info);
2210 flower->handle = tc->tcm_handle;
2211 ofpbuf_delete(reply);
2212 }
2213
2214 return error;
2215 }
2216
2217 void
2218 tc_set_policy(const char *policy)
2219 {
2220 if (!policy) {
2221 return;
2222 }
2223
2224 if (!strcmp(policy, "skip_sw")) {
2225 tc_policy = TC_POLICY_SKIP_SW;
2226 } else if (!strcmp(policy, "skip_hw")) {
2227 tc_policy = TC_POLICY_SKIP_HW;
2228 } else if (!strcmp(policy, "none")) {
2229 tc_policy = TC_POLICY_NONE;
2230 } else {
2231 VLOG_WARN("tc: Invalid policy '%s'", policy);
2232 return;
2233 }
2234
2235 VLOG_INFO("tc: Using policy '%s'", policy);
2236 }
openvswitch packages for PVE