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OVN: add icmp6 action to ovn acl reject support
[mirror_ovs.git] / lib / tc.c
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c1c5c723 1/*
ef3767f5 2 * Copyright (c) 2009-2017 Nicira, Inc.
f98e418f 3 * Copyright (c) 2016 Mellanox Technologies, Ltd.
c1c5c723
PB		 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"
ef3767f5 20
c1c5c723 21#include <errno.h>
f98e418f
RD		 22#include <linux/if_ether.h>
23#include <linux/rtnetlink.h>
8ada482b 24#include <linux/tc_act/tc_csum.h>
f98e418f
RD		 25#include <linux/tc_act/tc_gact.h>
26#include <linux/tc_act/tc_mirred.h>
8ada482b 27#include <linux/tc_act/tc_pedit.h>
f98e418f
RD		 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>
8c1e74d1 32#include <unistd.h>
ef3767f5 33
f98e418f 34#include "byte-order.h"
c1c5c723
PB		 35#include "netlink-socket.h"
36#include "netlink.h"
37#include "openvswitch/ofpbuf.h"
8ada482b 38#include "openvswitch/util.h"
c1c5c723 39#include "openvswitch/vlog.h"
f98e418f
RD		 40#include "packets.h"
41#include "timeval.h"
ef3767f5 42#include "unaligned.h"
c1c5c723 43
8ada482b
PB		 44#define MAX_PEDIT_OFFSETS 32
45
c1c5c723
PB		 46VLOG_DEFINE_THIS_MODULE(tc);
47
f98e418f
RD		 48static struct vlog_rate_limit error_rl = VLOG_RATE_LIMIT_INIT(60, 5);
49
691d20cb
PB		 50enum tc_offload_policy {
51 TC_POLICY_NONE,
52 TC_POLICY_SKIP_SW,
53 TC_POLICY_SKIP_HW
54};
55
56static enum tc_offload_policy tc_policy = TC_POLICY_NONE;
57
8ada482b
PB		 58struct tc_pedit_key_ex {
59 enum pedit_header_type htype;
60 enum pedit_cmd cmd;
61};
62
63struct flower_key_to_pedit {
64 enum pedit_header_type htype;
8ada482b 65 int offset;
fbaf1bf9 66 int flower_offset;
8ada482b
PB		 67 int size;
68};
69
70static struct flower_key_to_pedit flower_pedit_map[] = {
71 {
72 TCA_PEDIT_KEY_EX_HDR_TYPE_IP4,
73 12,
74 offsetof(struct tc_flower_key, ipv4.ipv4_src),
75 MEMBER_SIZEOF(struct tc_flower_key, ipv4.ipv4_src)
76 }, {
77 TCA_PEDIT_KEY_EX_HDR_TYPE_IP4,
78 16,
79 offsetof(struct tc_flower_key, ipv4.ipv4_dst),
80 MEMBER_SIZEOF(struct tc_flower_key, ipv4.ipv4_dst)
81 }, {
82 TCA_PEDIT_KEY_EX_HDR_TYPE_IP4,
83 8,
84 offsetof(struct tc_flower_key, ipv4.rewrite_ttl),
85 MEMBER_SIZEOF(struct tc_flower_key, ipv4.rewrite_ttl)
86 }, {
87 TCA_PEDIT_KEY_EX_HDR_TYPE_IP6,
88 8,
89 offsetof(struct tc_flower_key, ipv6.ipv6_src),
90 MEMBER_SIZEOF(struct tc_flower_key, ipv6.ipv6_src)
91 }, {
92 TCA_PEDIT_KEY_EX_HDR_TYPE_IP6,
93 24,
94 offsetof(struct tc_flower_key, ipv6.ipv6_dst),
95 MEMBER_SIZEOF(struct tc_flower_key, ipv6.ipv6_dst)
96 }, {
97 TCA_PEDIT_KEY_EX_HDR_TYPE_ETH,
98 6,
99 offsetof(struct tc_flower_key, src_mac),
100 MEMBER_SIZEOF(struct tc_flower_key, src_mac)
101 }, {
102 TCA_PEDIT_KEY_EX_HDR_TYPE_ETH,
103 0,
104 offsetof(struct tc_flower_key, dst_mac),
105 MEMBER_SIZEOF(struct tc_flower_key, dst_mac)
106 }, {
107 TCA_PEDIT_KEY_EX_HDR_TYPE_ETH,
108 12,
109 offsetof(struct tc_flower_key, eth_type),
110 MEMBER_SIZEOF(struct tc_flower_key, eth_type)
111 }, {
112 TCA_PEDIT_KEY_EX_HDR_TYPE_TCP,
113 0,
114 offsetof(struct tc_flower_key, tcp_src),
115 MEMBER_SIZEOF(struct tc_flower_key, tcp_src)
116 }, {
117 TCA_PEDIT_KEY_EX_HDR_TYPE_TCP,
118 2,
119 offsetof(struct tc_flower_key, tcp_dst),
120 MEMBER_SIZEOF(struct tc_flower_key, tcp_dst)
121 }, {
122 TCA_PEDIT_KEY_EX_HDR_TYPE_UDP,
123 0,
124 offsetof(struct tc_flower_key, udp_src),
125 MEMBER_SIZEOF(struct tc_flower_key, udp_src)
126 }, {
127 TCA_PEDIT_KEY_EX_HDR_TYPE_UDP,
128 2,
129 offsetof(struct tc_flower_key, udp_dst),
130 MEMBER_SIZEOF(struct tc_flower_key, udp_dst)
131 },
132};
133
d6118e62
PB		 134static inline int
135csum_update_flag(struct tc_flower *flower,
136 enum pedit_header_type htype);
137
c1c5c723
PB		 138struct tcmsg *
139tc_make_request(int ifindex, int type, unsigned int flags,
140 struct ofpbuf *request)
141{
142 struct tcmsg *tcmsg;
143
144 ofpbuf_init(request, 512);
145 nl_msg_put_nlmsghdr(request, sizeof *tcmsg, type, NLM_F_REQUEST | flags);
146 tcmsg = ofpbuf_put_zeros(request, sizeof *tcmsg);
147 tcmsg->tcm_family = AF_UNSPEC;
148 tcmsg->tcm_ifindex = ifindex;
149 /* Caller should fill in tcmsg->tcm_handle. */
150 /* Caller should fill in tcmsg->tcm_parent. */
151
152 return tcmsg;
153}
154
155int
156tc_transact(struct ofpbuf *request, struct ofpbuf **replyp)
157{
158 int error = nl_transact(NETLINK_ROUTE, request, replyp);
159 ofpbuf_uninit(request);
160 return error;
161}
162
163/* Adds or deletes a root ingress qdisc on device with specified ifindex.
164 *
165 * This function is equivalent to running the following when 'add' is true:
166 * /sbin/tc qdisc add dev <devname> handle ffff: ingress
167 *
168 * This function is equivalent to running the following when 'add' is false:
169 * /sbin/tc qdisc del dev <devname> handle ffff: ingress
170 *
171 * Where dev <devname> is the device with specified ifindex name.
172 *
173 * The configuration and stats may be seen with the following command:
174 * /sbin/tc -s qdisc show dev <devname>
175 *
176 * Returns 0 if successful, otherwise a positive errno value.
177 */
178int
179tc_add_del_ingress_qdisc(int ifindex, bool add)
180{
181 struct ofpbuf request;
182 struct tcmsg *tcmsg;
183 int error;
184 int type = add ? RTM_NEWQDISC : RTM_DELQDISC;
185 int flags = add ? NLM_F_EXCL | NLM_F_CREATE : 0;
186
187 tcmsg = tc_make_request(ifindex, type, flags, &request);
209832d5 188 tcmsg->tcm_handle = TC_H_MAKE(TC_H_INGRESS, 0);
c1c5c723
PB		 189 tcmsg->tcm_parent = TC_H_INGRESS;
190 nl_msg_put_string(&request, TCA_KIND, "ingress");
191 nl_msg_put_unspec(&request, TCA_OPTIONS, NULL, 0);
192
193 error = tc_transact(&request, NULL);
194 if (error) {
195 /* If we're deleting the qdisc, don't worry about some of the
196 * error conditions. */
197 if (!add && (error == ENOENT || error == EINVAL)) {
198 return 0;
199 }
200 return error;
201 }
202
203 return 0;
204}
f98e418f
RD		 205
206static const struct nl_policy tca_policy[] = {
207 [TCA_KIND] = { .type = NL_A_STRING, .optional = false, },
208 [TCA_OPTIONS] = { .type = NL_A_NESTED, .optional = false, },
209 [TCA_STATS] = { .type = NL_A_UNSPEC,
210 .min_len = sizeof(struct tc_stats), .optional = true, },
211 [TCA_STATS2] = { .type = NL_A_NESTED, .optional = true, },
212};
213
214static const struct nl_policy tca_flower_policy[] = {
215 [TCA_FLOWER_CLASSID] = { .type = NL_A_U32, .optional = true, },
216 [TCA_FLOWER_INDEV] = { .type = NL_A_STRING, .max_len = IFNAMSIZ,
217 .optional = true, },
218 [TCA_FLOWER_KEY_ETH_SRC] = { .type = NL_A_UNSPEC,
219 .min_len = ETH_ALEN, .optional = true, },
220 [TCA_FLOWER_KEY_ETH_DST] = { .type = NL_A_UNSPEC,
221 .min_len = ETH_ALEN, .optional = true, },
222 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .type = NL_A_UNSPEC,
223 .min_len = ETH_ALEN,
224 .optional = true, },
225 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .type = NL_A_UNSPEC,
226 .min_len = ETH_ALEN,
227 .optional = true, },
228 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NL_A_U16, .optional = false, },
229 [TCA_FLOWER_FLAGS] = { .type = NL_A_U32, .optional = false, },
230 [TCA_FLOWER_ACT] = { .type = NL_A_NESTED, .optional = false, },
231 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NL_A_U8, .optional = true, },
232 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NL_A_U32, .optional = true, },
233 [TCA_FLOWER_KEY_IPV4_DST] = {.type = NL_A_U32, .optional = true, },
234 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NL_A_U32, .optional = true, },
235 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NL_A_U32, .optional = true, },
236 [TCA_FLOWER_KEY_IPV6_SRC] = { .type = NL_A_UNSPEC,
237 .min_len = sizeof(struct in6_addr),
238 .optional = true, },
239 [TCA_FLOWER_KEY_IPV6_DST] = { .type = NL_A_UNSPEC,
240 .min_len = sizeof(struct in6_addr),
241 .optional = true, },
242 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .type = NL_A_UNSPEC,
243 .min_len = sizeof(struct in6_addr),
244 .optional = true, },
245 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .type = NL_A_UNSPEC,
246 .min_len = sizeof(struct in6_addr),
247 .optional = true, },
248 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NL_A_U16, .optional = true, },
249 [TCA_FLOWER_KEY_TCP_DST] = { .type = NL_A_U16, .optional = true, },
250 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NL_A_U16, .optional = true, },
251 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NL_A_U16, .optional = true, },
252 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NL_A_U16, .optional = true, },
253 [TCA_FLOWER_KEY_UDP_DST] = { .type = NL_A_U16, .optional = true, },
254 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NL_A_U16, .optional = true, },
255 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NL_A_U16, .optional = true, },
4862b4e5
VB		 256 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NL_A_U16, .optional = true, },
257 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NL_A_U16, .optional = true, },
258 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NL_A_U16, .optional = true, },
259 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NL_A_U16, .optional = true, },
f98e418f
RD		 260 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NL_A_U16, .optional = true, },
261 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NL_A_U8, .optional = true, },
262 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NL_A_U16, .optional = true, },
263 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NL_A_U32, .optional = true, },
264 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NL_A_U32, .optional = true, },
265 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NL_A_U32, .optional = true, },
266 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NL_A_U32,
267 .optional = true, },
268 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NL_A_U32,
269 .optional = true, },
270 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .type = NL_A_UNSPEC,
271 .min_len = sizeof(struct in6_addr),
272 .optional = true, },
273 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .type = NL_A_UNSPEC,
274 .min_len = sizeof(struct in6_addr),
275 .optional = true, },
276 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .type = NL_A_UNSPEC,
277 .min_len = sizeof(struct in6_addr),
278 .optional = true, },
279 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .type = NL_A_UNSPEC,
280 .min_len = sizeof(struct in6_addr),
281 .optional = true, },
282 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NL_A_U16,
283 .optional = true, },
83e86606
RD		 284 [TCA_FLOWER_KEY_FLAGS] = { .type = NL_A_BE32, .optional = true, },
285 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NL_A_BE32, .optional = true, },
0b4b5203
PB		 286 [TCA_FLOWER_KEY_IP_TTL] = { .type = NL_A_U8,
287 .optional = true, },
288 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NL_A_U8,
289 .optional = true, },
cd081043
PB		 290 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NL_A_U16,
291 .optional = true, },
292 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NL_A_U16,
293 .optional = true, },
f98e418f
RD		 294};
295
296static void
297nl_parse_flower_eth(struct nlattr **attrs, struct tc_flower *flower)
298{
299 const struct eth_addr *eth;
300
301 if (attrs[TCA_FLOWER_KEY_ETH_SRC_MASK]) {
302 eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_SRC], ETH_ALEN);
303 memcpy(&flower->key.src_mac, eth, sizeof flower->key.src_mac);
304
305 eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_SRC_MASK], ETH_ALEN);
306 memcpy(&flower->mask.src_mac, eth, sizeof flower->mask.src_mac);
307 }
308 if (attrs[TCA_FLOWER_KEY_ETH_DST_MASK]) {
309 eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_DST], ETH_ALEN);
310 memcpy(&flower->key.dst_mac, eth, sizeof flower->key.dst_mac);
311
312 eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_DST_MASK], ETH_ALEN);
313 memcpy(&flower->mask.dst_mac, eth, sizeof flower->mask.dst_mac);
314 }
315}
316
317static void
318nl_parse_flower_vlan(struct nlattr **attrs, struct tc_flower *flower)
319{
320 if (flower->key.eth_type != htons(ETH_TYPE_VLAN)) {
321 return;
322 }
323
324 flower->key.encap_eth_type =
325 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ETH_TYPE]);
326
327 if (attrs[TCA_FLOWER_KEY_VLAN_ID]) {
328 flower->key.vlan_id =
329 nl_attr_get_u16(attrs[TCA_FLOWER_KEY_VLAN_ID]);
330 }
331 if (attrs[TCA_FLOWER_KEY_VLAN_PRIO]) {
332 flower->key.vlan_prio =
333 nl_attr_get_u8(attrs[TCA_FLOWER_KEY_VLAN_PRIO]);
334 }
335}
336
337static void
338nl_parse_flower_tunnel(struct nlattr **attrs, struct tc_flower *flower)
339{
340 if (attrs[TCA_FLOWER_KEY_ENC_KEY_ID]) {
341 ovs_be32 id = nl_attr_get_be32(attrs[TCA_FLOWER_KEY_ENC_KEY_ID]);
342
343 flower->tunnel.id = be32_to_be64(id);
344 }
345 if (attrs[TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK]) {
346 flower->tunnel.ipv4.ipv4_src =
347 nl_attr_get_be32(attrs[TCA_FLOWER_KEY_ENC_IPV4_SRC]);
348 }
349 if (attrs[TCA_FLOWER_KEY_ENC_IPV4_DST_MASK]) {
350 flower->tunnel.ipv4.ipv4_dst =
351 nl_attr_get_be32(attrs[TCA_FLOWER_KEY_ENC_IPV4_DST]);
352 }
353 if (attrs[TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK]) {
354 flower->tunnel.ipv6.ipv6_src =
355 nl_attr_get_in6_addr(attrs[TCA_FLOWER_KEY_ENC_IPV6_SRC]);
356 }
357 if (attrs[TCA_FLOWER_KEY_ENC_IPV6_DST_MASK]) {
358 flower->tunnel.ipv6.ipv6_dst =
359 nl_attr_get_in6_addr(attrs[TCA_FLOWER_KEY_ENC_IPV6_DST]);
360 }
361 if (attrs[TCA_FLOWER_KEY_ENC_UDP_DST_PORT]) {
362 flower->tunnel.tp_dst =
363 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ENC_UDP_DST_PORT]);
364 }
365}
366
367static void
368nl_parse_flower_ip(struct nlattr **attrs, struct tc_flower *flower) {
369 uint8_t ip_proto = 0;
370 struct tc_flower_key *key = &flower->key;
371 struct tc_flower_key *mask = &flower->mask;
372
373 if (attrs[TCA_FLOWER_KEY_IP_PROTO]) {
374 ip_proto = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_IP_PROTO]);
375 key->ip_proto = ip_proto;
376 mask->ip_proto = UINT8_MAX;
377 }
378
83e86606 379 if (attrs[TCA_FLOWER_KEY_FLAGS_MASK]) {
7e0f69b5
IS		 380 key->flags = ntohl(nl_attr_get_be32(attrs[TCA_FLOWER_KEY_FLAGS]));
381 mask->flags =
382 ntohl(nl_attr_get_be32(attrs[TCA_FLOWER_KEY_FLAGS_MASK]));
83e86606
RD		 383 }
384
f98e418f
RD		 385 if (attrs[TCA_FLOWER_KEY_IPV4_SRC_MASK]) {
386 key->ipv4.ipv4_src =
387 nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_SRC]);
388 mask->ipv4.ipv4_src =
389 nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_SRC_MASK]);
390 }
391 if (attrs[TCA_FLOWER_KEY_IPV4_DST_MASK]) {
392 key->ipv4.ipv4_dst =
393 nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_DST]);
394 mask->ipv4.ipv4_dst =
395 nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_DST_MASK]);
396 }
397 if (attrs[TCA_FLOWER_KEY_IPV6_SRC_MASK]) {
398 struct nlattr *attr = attrs[TCA_FLOWER_KEY_IPV6_SRC];
399 struct nlattr *attr_mask = attrs[TCA_FLOWER_KEY_IPV6_SRC_MASK];
400
401 key->ipv6.ipv6_src = nl_attr_get_in6_addr(attr);
402 mask->ipv6.ipv6_src = nl_attr_get_in6_addr(attr_mask);
403 }
404 if (attrs[TCA_FLOWER_KEY_IPV6_DST_MASK]) {
405 struct nlattr *attr = attrs[TCA_FLOWER_KEY_IPV6_DST];
406 struct nlattr *attr_mask = attrs[TCA_FLOWER_KEY_IPV6_DST_MASK];
407
408 key->ipv6.ipv6_dst = nl_attr_get_in6_addr(attr);
409 mask->ipv6.ipv6_dst = nl_attr_get_in6_addr(attr_mask);
410 }
411
412 if (ip_proto == IPPROTO_TCP) {
413 if (attrs[TCA_FLOWER_KEY_TCP_SRC_MASK]) {
2b1d9fa9 414 key->tcp_src =
f98e418f 415 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_SRC]);
2b1d9fa9 416 mask->tcp_src =
f98e418f
RD		 417 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_SRC_MASK]);
418 }
419 if (attrs[TCA_FLOWER_KEY_TCP_DST_MASK]) {
2b1d9fa9 420 key->tcp_dst =
f98e418f 421 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_DST]);
2b1d9fa9 422 mask->tcp_dst =
f98e418f
RD		 423 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_DST_MASK]);
424 }
cd081043
PB		 425 if (attrs[TCA_FLOWER_KEY_TCP_FLAGS_MASK]) {
426 key->tcp_flags =
427 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_FLAGS]);
428 mask->tcp_flags =
429 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_FLAGS_MASK]);
430 }
f98e418f
RD		 431 } else if (ip_proto == IPPROTO_UDP) {
432 if (attrs[TCA_FLOWER_KEY_UDP_SRC_MASK]) {
2b1d9fa9
PB		 433 key->udp_src = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_SRC]);
434 mask->udp_src =
f98e418f
RD		 435 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_SRC_MASK]);
436 }
437 if (attrs[TCA_FLOWER_KEY_UDP_DST_MASK]) {
2b1d9fa9
PB		 438 key->udp_dst = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_DST]);
439 mask->udp_dst =
f98e418f
RD		 440 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_DST_MASK]);
441 }
4862b4e5
VB		 442 } else if (ip_proto == IPPROTO_SCTP) {
443 if (attrs[TCA_FLOWER_KEY_SCTP_SRC_MASK]) {
2b1d9fa9
PB		 444 key->sctp_src = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_SCTP_SRC]);
445 mask->sctp_src =
4862b4e5
VB		 446 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_SCTP_SRC_MASK]);
447 }
448 if (attrs[TCA_FLOWER_KEY_SCTP_DST_MASK]) {
2b1d9fa9
PB		 449 key->sctp_dst = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_SCTP_DST]);
450 mask->sctp_dst =
4862b4e5
VB		 451 nl_attr_get_be16(attrs[TCA_FLOWER_KEY_SCTP_DST_MASK]);
452 }
f98e418f 453 }
0b4b5203
PB		 454
455 if (attrs[TCA_FLOWER_KEY_IP_TTL_MASK]) {
456 key->ip_ttl = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_IP_TTL]);
457 mask->ip_ttl = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_IP_TTL_MASK]);
458 }
f98e418f
RD		 459}
460
8ada482b
PB		 461static const struct nl_policy pedit_policy[] = {
462 [TCA_PEDIT_PARMS_EX] = { .type = NL_A_UNSPEC,
463 .min_len = sizeof(struct tc_pedit),
464 .optional = false, },
465 [TCA_PEDIT_KEYS_EX] = { .type = NL_A_NESTED,
466 .optional = false, },
467};
468
469static int
470nl_parse_act_pedit(struct nlattr *options, struct tc_flower *flower)
471{
472 struct nlattr *pe_attrs[ARRAY_SIZE(pedit_policy)];
473 const struct tc_pedit *pe;
474 const struct tc_pedit_key *keys;
475 const struct nlattr *nla, *keys_ex, *ex_type;
476 const void *keys_attr;
477 char *rewrite_key = (void *) &flower->rewrite.key;
478 char *rewrite_mask = (void *) &flower->rewrite.mask;
479 size_t keys_ex_size, left;
d6118e62 480 int type, i = 0, err;
8ada482b
PB		 481
482 if (!nl_parse_nested(options, pedit_policy, pe_attrs,
483 ARRAY_SIZE(pedit_policy))) {
484 VLOG_ERR_RL(&error_rl, "failed to parse pedit action options");
485 return EPROTO;
486 }
487
488 pe = nl_attr_get_unspec(pe_attrs[TCA_PEDIT_PARMS_EX], sizeof *pe);
489 keys = pe->keys;
490 keys_attr = pe_attrs[TCA_PEDIT_KEYS_EX];
491 keys_ex = nl_attr_get(keys_attr);
492 keys_ex_size = nl_attr_get_size(keys_attr);
493
494 NL_ATTR_FOR_EACH (nla, left, keys_ex, keys_ex_size) {
495 if (i >= pe->nkeys) {
496 break;
497 }
498
408671c4 499 if (nl_attr_type(nla) != TCA_PEDIT_KEY_EX) {
8ada482b
PB		 500 VLOG_ERR_RL(&error_rl, "unable to parse legacy pedit type: %d",
501 nl_attr_type(nla));
502 return EOPNOTSUPP;
503 }
504
505 ex_type = nl_attr_find_nested(nla, TCA_PEDIT_KEY_EX_HTYPE);
506 type = nl_attr_get_u16(ex_type);
507
d6118e62
PB		 508 err = csum_update_flag(flower, type);
509 if (err) {
510 return err;
511 }
512
8ada482b
PB		 513 for (int j = 0; j < ARRAY_SIZE(flower_pedit_map); j++) {
514 struct flower_key_to_pedit *m = &flower_pedit_map[j];
515 int flower_off = m->flower_offset;
516 int sz = m->size;
517 int mf = m->offset;
518
519 if (m->htype != type) {
520 continue;
521 }
522
523 /* check overlap between current pedit key, which is always
524 * 4 bytes (range [off, off + 3]), and a map entry in
525 * flower_pedit_map (range [mf, mf + sz - 1]) */
526 if ((keys->off >= mf && keys->off < mf + sz)
527 || (keys->off + 3 >= mf && keys->off + 3 < mf + sz)) {
528 int diff = flower_off + (keys->off - mf);
529 uint32_t *dst = (void *) (rewrite_key + diff);
530 uint32_t *dst_m = (void *) (rewrite_mask + diff);
531 uint32_t mask = ~(keys->mask);
532 uint32_t zero_bits;
533
534 if (keys->off < mf) {
535 zero_bits = 8 * (mf - keys->off);
536 mask &= UINT32_MAX << zero_bits;
537 } else if (keys->off + 4 > mf + m->size) {
538 zero_bits = 8 * (keys->off + 4 - mf - m->size);
539 mask &= UINT32_MAX >> zero_bits;
540 }
541
542 *dst_m |= mask;
543 *dst |= keys->val & mask;
544 }
545 }
546
547 keys++;
548 i++;
549 }
550
551 flower->rewrite.rewrite = true;
552
553 return 0;
554}
555
f98e418f
RD		 556static const struct nl_policy tunnel_key_policy[] = {
557 [TCA_TUNNEL_KEY_PARMS] = { .type = NL_A_UNSPEC,
558 .min_len = sizeof(struct tc_tunnel_key),
559 .optional = false, },
560 [TCA_TUNNEL_KEY_ENC_IPV4_SRC] = { .type = NL_A_U32, .optional = true, },
561 [TCA_TUNNEL_KEY_ENC_IPV4_DST] = { .type = NL_A_U32, .optional = true, },
562 [TCA_TUNNEL_KEY_ENC_IPV6_SRC] = { .type = NL_A_UNSPEC,
563 .min_len = sizeof(struct in6_addr),
564 .optional = true, },
565 [TCA_TUNNEL_KEY_ENC_IPV6_DST] = { .type = NL_A_UNSPEC,
566 .min_len = sizeof(struct in6_addr),
567 .optional = true, },
568 [TCA_TUNNEL_KEY_ENC_KEY_ID] = { .type = NL_A_U32, .optional = true, },
569 [TCA_TUNNEL_KEY_ENC_DST_PORT] = { .type = NL_A_U16, .optional = true, },
570};
571
572static int
573nl_parse_act_tunnel_key(struct nlattr *options, struct tc_flower *flower)
574{
575 struct nlattr *tun_attrs[ARRAY_SIZE(tunnel_key_policy)];
576 const struct nlattr *tun_parms;
577 const struct tc_tunnel_key *tun;
578
579 if (!nl_parse_nested(options, tunnel_key_policy, tun_attrs,
580 ARRAY_SIZE(tunnel_key_policy))) {
581 VLOG_ERR_RL(&error_rl, "failed to parse tunnel_key action options");
582 return EPROTO;
583 }
584
585 tun_parms = tun_attrs[TCA_TUNNEL_KEY_PARMS];
586 tun = nl_attr_get_unspec(tun_parms, sizeof *tun);
587 if (tun->t_action == TCA_TUNNEL_KEY_ACT_SET) {
588 struct nlattr *id = tun_attrs[TCA_TUNNEL_KEY_ENC_KEY_ID];
589 struct nlattr *dst_port = tun_attrs[TCA_TUNNEL_KEY_ENC_DST_PORT];
590 struct nlattr *ipv4_src = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV4_SRC];
591 struct nlattr *ipv4_dst = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV4_DST];
592 struct nlattr *ipv6_src = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV6_SRC];
593 struct nlattr *ipv6_dst = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV6_DST];
594
595 flower->set.set = true;
596 flower->set.ipv4.ipv4_src = ipv4_src ? nl_attr_get_be32(ipv4_src) : 0;
597 flower->set.ipv4.ipv4_dst = ipv4_dst ? nl_attr_get_be32(ipv4_dst) : 0;
598 if (ipv6_src) {
599 flower->set.ipv6.ipv6_src = nl_attr_get_in6_addr(ipv6_src);
600 }
601 if (ipv6_dst) {
602 flower->set.ipv6.ipv6_dst = nl_attr_get_in6_addr(ipv6_dst);
603 }
604 flower->set.id = id ? be32_to_be64(nl_attr_get_be32(id)) : 0;
605 flower->set.tp_dst = dst_port ? nl_attr_get_be16(dst_port) : 0;
606 } else if (tun->t_action == TCA_TUNNEL_KEY_ACT_RELEASE) {
607 flower->tunnel.tunnel = true;
608 } else {
609 VLOG_ERR_RL(&error_rl, "unknown tunnel actions: %d, %d",
610 tun->action, tun->t_action);
611 return EINVAL;
612 }
613 return 0;
614}
615
616static const struct nl_policy gact_policy[] = {
617 [TCA_GACT_PARMS] = { .type = NL_A_UNSPEC,
618 .min_len = sizeof(struct tc_gact),
619 .optional = false, },
620 [TCA_GACT_TM] = { .type = NL_A_UNSPEC,
621 .min_len = sizeof(struct tcf_t),
622 .optional = false, },
623};
624
8c1e74d1
PB		 625static int
626get_user_hz(void)
627{
628 static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
629 static int user_hz = 100;
630
631 if (ovsthread_once_start(&once)) {
632 user_hz = sysconf(_SC_CLK_TCK);
633 ovsthread_once_done(&once);
634 }
635
636 return user_hz;
637}
f98e418f
RD		 638
639static void
640nl_parse_tcf(const struct tcf_t *tm, struct tc_flower *flower)
641{
8c1e74d1 642 flower->lastused = time_msec() - (tm->lastuse * 1000 / get_user_hz());
f98e418f
RD		 643}
644
645static int
646nl_parse_act_drop(struct nlattr *options, struct tc_flower *flower)
647{
648 struct nlattr *gact_attrs[ARRAY_SIZE(gact_policy)];
649 const struct tc_gact *p;
650 struct nlattr *gact_parms;
651 const struct tcf_t *tm;
652
653 if (!nl_parse_nested(options, gact_policy, gact_attrs,
654 ARRAY_SIZE(gact_policy))) {
655 VLOG_ERR_RL(&error_rl, "failed to parse gact action options");
656 return EPROTO;
657 }
658
659 gact_parms = gact_attrs[TCA_GACT_PARMS];
660 p = nl_attr_get_unspec(gact_parms, sizeof *p);
661
662 if (p->action != TC_ACT_SHOT) {
663 VLOG_ERR_RL(&error_rl, "unknown gact action: %d", p->action);
664 return EINVAL;
665 }
666
667 tm = nl_attr_get_unspec(gact_attrs[TCA_GACT_TM], sizeof *tm);
668 nl_parse_tcf(tm, flower);
669
670 return 0;
671}
672
673static const struct nl_policy mirred_policy[] = {
674 [TCA_MIRRED_PARMS] = { .type = NL_A_UNSPEC,
675 .min_len = sizeof(struct tc_mirred),
676 .optional = false, },
677 [TCA_MIRRED_TM] = { .type = NL_A_UNSPEC,
678 .min_len = sizeof(struct tcf_t),
679 .optional = false, },
680};
681
682static int
683nl_parse_act_mirred(struct nlattr *options, struct tc_flower *flower)
684{
685
686 struct nlattr *mirred_attrs[ARRAY_SIZE(mirred_policy)];
687 const struct tc_mirred *m;
688 const struct nlattr *mirred_parms;
689 const struct tcf_t *tm;
690 struct nlattr *mirred_tm;
691
692 if (!nl_parse_nested(options, mirred_policy, mirred_attrs,
693 ARRAY_SIZE(mirred_policy))) {
694 VLOG_ERR_RL(&error_rl, "failed to parse mirred action options");
695 return EPROTO;
696 }
697
698 mirred_parms = mirred_attrs[TCA_MIRRED_PARMS];
699 m = nl_attr_get_unspec(mirred_parms, sizeof *m);
700
701 if (m->action != TC_ACT_STOLEN || m->eaction != TCA_EGRESS_REDIR) {
702 VLOG_ERR_RL(&error_rl, "unknown mirred action: %d, %d, %d",
703 m->action, m->eaction, m->ifindex);
704 return EINVAL;
705 }
706
707 flower->ifindex_out = m->ifindex;
708
709 mirred_tm = mirred_attrs[TCA_MIRRED_TM];
710 tm = nl_attr_get_unspec(mirred_tm, sizeof *tm);
711 nl_parse_tcf(tm, flower);
712
713 return 0;
714}
715
716static const struct nl_policy vlan_policy[] = {
717 [TCA_VLAN_PARMS] = { .type = NL_A_UNSPEC,
718 .min_len = sizeof(struct tc_vlan),
719 .optional = false, },
720 [TCA_VLAN_PUSH_VLAN_ID] = { .type = NL_A_U16, .optional = true, },
721 [TCA_VLAN_PUSH_VLAN_PROTOCOL] = { .type = NL_A_U16, .optional = true, },
722 [TCA_VLAN_PUSH_VLAN_PRIORITY] = { .type = NL_A_U8, .optional = true, },
723};
724
725static int
726nl_parse_act_vlan(struct nlattr *options, struct tc_flower *flower)
727{
728 struct nlattr *vlan_attrs[ARRAY_SIZE(vlan_policy)];
729 const struct tc_vlan *v;
730 const struct nlattr *vlan_parms;
731
732 if (!nl_parse_nested(options, vlan_policy, vlan_attrs,
733 ARRAY_SIZE(vlan_policy))) {
734 VLOG_ERR_RL(&error_rl, "failed to parse vlan action options");
735 return EPROTO;
736 }
737
738 vlan_parms = vlan_attrs[TCA_VLAN_PARMS];
739 v = nl_attr_get_unspec(vlan_parms, sizeof *v);
740 if (v->v_action == TCA_VLAN_ACT_PUSH) {
741 struct nlattr *vlan_id = vlan_attrs[TCA_VLAN_PUSH_VLAN_ID];
742 struct nlattr *vlan_prio = vlan_attrs[TCA_VLAN_PUSH_VLAN_PRIORITY];
743
744 flower->vlan_push_id = nl_attr_get_u16(vlan_id);
745 flower->vlan_push_prio = vlan_prio ? nl_attr_get_u8(vlan_prio) : 0;
746 } else if (v->v_action == TCA_VLAN_ACT_POP) {
747 flower->vlan_pop = 1;
748 } else {
749 VLOG_ERR_RL(&error_rl, "unknown vlan action: %d, %d",
750 v->action, v->v_action);
751 return EINVAL;
752 }
753 return 0;
754}
755
d6118e62
PB		 756static const struct nl_policy csum_policy[] = {
757 [TCA_CSUM_PARMS] = { .type = NL_A_UNSPEC,
758 .min_len = sizeof(struct tc_csum),
759 .optional = false, },
760};
761
762static int
763nl_parse_act_csum(struct nlattr *options, struct tc_flower *flower)
764{
765 struct nlattr *csum_attrs[ARRAY_SIZE(csum_policy)];
766 const struct tc_csum *c;
767 const struct nlattr *csum_parms;
768
769 if (!nl_parse_nested(options, csum_policy, csum_attrs,
770 ARRAY_SIZE(csum_policy))) {
771 VLOG_ERR_RL(&error_rl, "failed to parse csum action options");
772 return EPROTO;
773 }
774
775 csum_parms = csum_attrs[TCA_CSUM_PARMS];
776 c = nl_attr_get_unspec(csum_parms, sizeof *c);
777
778 /* sanity checks */
779 if (c->update_flags != flower->csum_update_flags) {
780 VLOG_WARN_RL(&error_rl,
781 "expected different act csum flags: 0x%x != 0x%x",
782 flower->csum_update_flags, c->update_flags);
783 return EINVAL;
784 }
785 flower->csum_update_flags = 0; /* so we know csum was handled */
786
787 if (flower->needs_full_ip_proto_mask
788 && flower->mask.ip_proto != UINT8_MAX) {
789 VLOG_WARN_RL(&error_rl, "expected full matching on flower ip_proto");
790 return EINVAL;
791 }
792
793 return 0;
794}
795
f98e418f
RD		 796static const struct nl_policy act_policy[] = {
797 [TCA_ACT_KIND] = { .type = NL_A_STRING, .optional = false, },
798 [TCA_ACT_COOKIE] = { .type = NL_A_UNSPEC, .optional = true, },
799 [TCA_ACT_OPTIONS] = { .type = NL_A_NESTED, .optional = false, },
800 [TCA_ACT_STATS] = { .type = NL_A_NESTED, .optional = false, },
801};
802
803static const struct nl_policy stats_policy[] = {
804 [TCA_STATS_BASIC] = { .type = NL_A_UNSPEC,
805 .min_len = sizeof(struct gnet_stats_basic),
806 .optional = false, },
807};
808
809static int
810nl_parse_single_action(struct nlattr *action, struct tc_flower *flower)
811{
812 struct nlattr *act_options;
813 struct nlattr *act_stats;
814 struct nlattr *act_cookie;
815 const char *act_kind;
816 struct nlattr *action_attrs[ARRAY_SIZE(act_policy)];
817 struct nlattr *stats_attrs[ARRAY_SIZE(stats_policy)];
818 struct ovs_flow_stats *stats = &flower->stats;
819 const struct gnet_stats_basic *bs;
40c5aa11 820 int err = 0;
f98e418f
RD		 821
822 if (!nl_parse_nested(action, act_policy, action_attrs,
823 ARRAY_SIZE(act_policy))) {
824 VLOG_ERR_RL(&error_rl, "failed to parse single action options");
825 return EPROTO;
826 }
827
828 act_kind = nl_attr_get_string(action_attrs[TCA_ACT_KIND]);
829 act_options = action_attrs[TCA_ACT_OPTIONS];
830 act_cookie = action_attrs[TCA_ACT_COOKIE];
831
832 if (!strcmp(act_kind, "gact")) {
40c5aa11 833 err = nl_parse_act_drop(act_options, flower);
f98e418f 834 } else if (!strcmp(act_kind, "mirred")) {
40c5aa11 835 err = nl_parse_act_mirred(act_options, flower);
f98e418f 836 } else if (!strcmp(act_kind, "vlan")) {
40c5aa11 837 err = nl_parse_act_vlan(act_options, flower);
f98e418f 838 } else if (!strcmp(act_kind, "tunnel_key")) {
40c5aa11 839 err = nl_parse_act_tunnel_key(act_options, flower);
8ada482b 840 } else if (!strcmp(act_kind, "pedit")) {
40c5aa11 841 err = nl_parse_act_pedit(act_options, flower);
8ada482b 842 } else if (!strcmp(act_kind, "csum")) {
d6118e62 843 nl_parse_act_csum(act_options, flower);
f98e418f
RD		 844 } else {
845 VLOG_ERR_RL(&error_rl, "unknown tc action kind: %s", act_kind);
40c5aa11
RD		 846 err = EINVAL;
847 }
848
849 if (err) {
850 return err;
f98e418f
RD		 851 }
852
853 if (act_cookie) {
854 flower->act_cookie.data = nl_attr_get(act_cookie);
855 flower->act_cookie.len = nl_attr_get_size(act_cookie);
856 }
857
858 act_stats = action_attrs[TCA_ACT_STATS];
859
860 if (!nl_parse_nested(act_stats, stats_policy, stats_attrs,
861 ARRAY_SIZE(stats_policy))) {
862 VLOG_ERR_RL(&error_rl, "failed to parse action stats policy");
863 return EPROTO;
864 }
865
866 bs = nl_attr_get_unspec(stats_attrs[TCA_STATS_BASIC], sizeof *bs);
867 put_32aligned_u64(&stats->n_packets, bs->packets);
868 put_32aligned_u64(&stats->n_bytes, bs->bytes);
869
870 return 0;
871}
872
873#define TCA_ACT_MIN_PRIO 1
874
875static int
876nl_parse_flower_actions(struct nlattr **attrs, struct tc_flower *flower)
877{
878 const struct nlattr *actions = attrs[TCA_FLOWER_ACT];
879 static struct nl_policy actions_orders_policy[TCA_ACT_MAX_PRIO + 1] = {};
880 struct nlattr *actions_orders[ARRAY_SIZE(actions_orders_policy)];
881 const int max_size = ARRAY_SIZE(actions_orders_policy);
882
883 for (int i = TCA_ACT_MIN_PRIO; i < max_size; i++) {
884 actions_orders_policy[i].type = NL_A_NESTED;
885 actions_orders_policy[i].optional = true;
886 }
887
888 if (!nl_parse_nested(actions, actions_orders_policy, actions_orders,
889 ARRAY_SIZE(actions_orders_policy))) {
890 VLOG_ERR_RL(&error_rl, "failed to parse flower order of actions");
891 return EPROTO;
892 }
893
894 for (int i = TCA_ACT_MIN_PRIO; i < max_size; i++) {
895 if (actions_orders[i]) {
896 int err = nl_parse_single_action(actions_orders[i], flower);
897
898 if (err) {
899 return err;
900 }
901 }
902 }
903
d6118e62
PB		 904 if (flower->csum_update_flags) {
905 VLOG_WARN_RL(&error_rl,
906 "expected act csum with flags: 0x%x",
907 flower->csum_update_flags);
908 return EINVAL;
909 }
910
f98e418f
RD		 911 return 0;
912}
913
914static int
915nl_parse_flower_options(struct nlattr *nl_options, struct tc_flower *flower)
916{
917 struct nlattr *attrs[ARRAY_SIZE(tca_flower_policy)];
918
919 if (!nl_parse_nested(nl_options, tca_flower_policy,
920 attrs, ARRAY_SIZE(tca_flower_policy))) {
921 VLOG_ERR_RL(&error_rl, "failed to parse flower classifier options");
922 return EPROTO;
923 }
924
925 nl_parse_flower_eth(attrs, flower);
926 nl_parse_flower_vlan(attrs, flower);
927 nl_parse_flower_ip(attrs, flower);
928 nl_parse_flower_tunnel(attrs, flower);
929 return nl_parse_flower_actions(attrs, flower);
930}
931
932int
933parse_netlink_to_tc_flower(struct ofpbuf *reply, struct tc_flower *flower)
934{
935 struct tcmsg *tc;
936 struct nlattr *ta[ARRAY_SIZE(tca_policy)];
937 const char *kind;
938
939 if (NLMSG_HDRLEN + sizeof *tc > reply->size) {
940 return EPROTO;
941 }
942
943 memset(flower, 0, sizeof *flower);
944
945 tc = ofpbuf_at_assert(reply, NLMSG_HDRLEN, sizeof *tc);
946 flower->handle = tc->tcm_handle;
947 flower->key.eth_type = (OVS_FORCE ovs_be16) tc_get_minor(tc->tcm_info);
948 flower->mask.eth_type = OVS_BE16_MAX;
949 flower->prio = tc_get_major(tc->tcm_info);
950
951 if (!flower->handle) {
952 return EAGAIN;
953 }
954
955 if (!nl_policy_parse(reply, NLMSG_HDRLEN + sizeof *tc,
956 tca_policy, ta, ARRAY_SIZE(ta))) {
957 VLOG_ERR_RL(&error_rl, "failed to parse tca policy");
958 return EPROTO;
959 }
960
961 kind = nl_attr_get_string(ta[TCA_KIND]);
962 if (strcmp(kind, "flower")) {
963 VLOG_ERR_RL(&error_rl, "failed to parse filter: %s", kind);
964 return EPROTO;
965 }
966
967 return nl_parse_flower_options(ta[TCA_OPTIONS], flower);
968}
969
970int
971tc_dump_flower_start(int ifindex, struct nl_dump *dump)
972{
973 struct ofpbuf request;
974 struct tcmsg *tcmsg;
975
976 tcmsg = tc_make_request(ifindex, RTM_GETTFILTER, NLM_F_DUMP, &request);
977 tcmsg->tcm_parent = TC_INGRESS_PARENT;
978 tcmsg->tcm_info = TC_H_UNSPEC;
979 tcmsg->tcm_handle = 0;
980
981 nl_dump_start(dump, NETLINK_ROUTE, &request);
982 ofpbuf_uninit(&request);
983
984 return 0;
985}
986
987int
988tc_flush(int ifindex)
989{
990 struct ofpbuf request;
991 struct tcmsg *tcmsg;
992
993 tcmsg = tc_make_request(ifindex, RTM_DELTFILTER, NLM_F_ACK, &request);
994 tcmsg->tcm_parent = TC_INGRESS_PARENT;
995 tcmsg->tcm_info = TC_H_UNSPEC;
996
997 return tc_transact(&request, NULL);
998}
999
1000int
1001tc_del_filter(int ifindex, int prio, int handle)
1002{
1003 struct ofpbuf request;
1004 struct tcmsg *tcmsg;
1005 struct ofpbuf *reply;
1006 int error;
1007
1008 tcmsg = tc_make_request(ifindex, RTM_DELTFILTER, NLM_F_ECHO, &request);
1009 tcmsg->tcm_parent = TC_INGRESS_PARENT;
1010 tcmsg->tcm_info = tc_make_handle(prio, 0);
1011 tcmsg->tcm_handle = handle;
1012
1013 error = tc_transact(&request, &reply);
1014 if (!error) {
1015 ofpbuf_delete(reply);
1016 }
1017 return error;
1018}
1019
1020int
1021tc_get_flower(int ifindex, int prio, int handle, struct tc_flower *flower)
1022{
1023 struct ofpbuf request;
1024 struct tcmsg *tcmsg;
1025 struct ofpbuf *reply;
1026 int error;
1027
1028 tcmsg = tc_make_request(ifindex, RTM_GETTFILTER, NLM_F_ECHO, &request);
1029 tcmsg->tcm_parent = TC_INGRESS_PARENT;
1030 tcmsg->tcm_info = tc_make_handle(prio, 0);
1031 tcmsg->tcm_handle = handle;
1032
1033 error = tc_transact(&request, &reply);
1034 if (error) {
1035 return error;
1036 }
1037
1038 error = parse_netlink_to_tc_flower(reply, flower);
1039 ofpbuf_delete(reply);
1040 return error;
1041}
1042
691d20cb
PB		 1043static int
1044tc_get_tc_cls_policy(enum tc_offload_policy policy)
1045{
1046 if (policy == TC_POLICY_SKIP_HW) {
1047 return TCA_CLS_FLAGS_SKIP_HW;
1048 } else if (policy == TC_POLICY_SKIP_SW) {
1049 return TCA_CLS_FLAGS_SKIP_SW;
1050 }
1051
1052 return 0;
1053}
1054
8ada482b
PB		 1055static void
1056nl_msg_put_act_csum(struct ofpbuf *request, uint32_t flags)
1057{
1058 size_t offset;
1059
1060 nl_msg_put_string(request, TCA_ACT_KIND, "csum");
1061 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1062 {
1063 struct tc_csum parm = { .action = TC_ACT_PIPE,
1064 .update_flags = flags };
1065
1066 nl_msg_put_unspec(request, TCA_CSUM_PARMS, &parm, sizeof parm);
1067 }
1068 nl_msg_end_nested(request, offset);
1069}
1070
1071static void
1072nl_msg_put_act_pedit(struct ofpbuf *request, struct tc_pedit *parm,
1073 struct tc_pedit_key_ex *ex)
1074{
e13bbbab 1075 size_t ksize = sizeof *parm + parm->nkeys * sizeof(struct tc_pedit_key);
8ada482b
PB		 1076 size_t offset, offset_keys_ex, offset_key;
1077 int i;
1078
1079 nl_msg_put_string(request, TCA_ACT_KIND, "pedit");
1080 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1081 {
1082 parm->action = TC_ACT_PIPE;
1083
1084 nl_msg_put_unspec(request, TCA_PEDIT_PARMS_EX, parm, ksize);
1085 offset_keys_ex = nl_msg_start_nested(request, TCA_PEDIT_KEYS_EX);
1086 for (i = 0; i < parm->nkeys; i++, ex++) {
1087 offset_key = nl_msg_start_nested(request, TCA_PEDIT_KEY_EX);
1088 nl_msg_put_u16(request, TCA_PEDIT_KEY_EX_HTYPE, ex->htype);
1089 nl_msg_put_u16(request, TCA_PEDIT_KEY_EX_CMD, ex->cmd);
1090 nl_msg_end_nested(request, offset_key);
1091 }
1092 nl_msg_end_nested(request, offset_keys_ex);
1093 }
1094 nl_msg_end_nested(request, offset);
1095}
1096
f98e418f
RD		 1097static void
1098nl_msg_put_act_push_vlan(struct ofpbuf *request, uint16_t vid, uint8_t prio)
1099{
1100 size_t offset;
1101
1102 nl_msg_put_string(request, TCA_ACT_KIND, "vlan");
1103 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1104 {
1105 struct tc_vlan parm = { .action = TC_ACT_PIPE,
1106 .v_action = TCA_VLAN_ACT_PUSH };
1107
1108 nl_msg_put_unspec(request, TCA_VLAN_PARMS, &parm, sizeof parm);
1109 nl_msg_put_u16(request, TCA_VLAN_PUSH_VLAN_ID, vid);
1110 nl_msg_put_u8(request, TCA_VLAN_PUSH_VLAN_PRIORITY, prio);
1111 }
1112 nl_msg_end_nested(request, offset);
1113}
1114
1115static void
1116nl_msg_put_act_pop_vlan(struct ofpbuf *request)
1117{
1118 size_t offset;
1119
1120 nl_msg_put_string(request, TCA_ACT_KIND, "vlan");
1121 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1122 {
1123 struct tc_vlan parm = { .action = TC_ACT_PIPE,
1124 .v_action = TCA_VLAN_ACT_POP };
1125
1126 nl_msg_put_unspec(request, TCA_VLAN_PARMS, &parm, sizeof parm);
1127 }
1128 nl_msg_end_nested(request, offset);
1129}
1130
1131static void
1132nl_msg_put_act_tunnel_key_release(struct ofpbuf *request)
1133{
1134 size_t offset;
1135
1136 nl_msg_put_string(request, TCA_ACT_KIND, "tunnel_key");
1137 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1138 {
1139 struct tc_tunnel_key tun = { .action = TC_ACT_PIPE,
1140 .t_action = TCA_TUNNEL_KEY_ACT_RELEASE };
1141
1142 nl_msg_put_unspec(request, TCA_TUNNEL_KEY_PARMS, &tun, sizeof tun);
1143 }
1144 nl_msg_end_nested(request, offset);
1145}
1146
1147static void
1148nl_msg_put_act_tunnel_key_set(struct ofpbuf *request, ovs_be64 id,
1149 ovs_be32 ipv4_src, ovs_be32 ipv4_dst,
1150 struct in6_addr *ipv6_src,
1151 struct in6_addr *ipv6_dst,
1152 ovs_be16 tp_dst)
1153{
1154 size_t offset;
1155
1156 nl_msg_put_string(request, TCA_ACT_KIND, "tunnel_key");
1157 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1158 {
1159 struct tc_tunnel_key tun = { .action = TC_ACT_PIPE,
1160 .t_action = TCA_TUNNEL_KEY_ACT_SET };
1161
1162 nl_msg_put_unspec(request, TCA_TUNNEL_KEY_PARMS, &tun, sizeof tun);
1163
1164 ovs_be32 id32 = be64_to_be32(id);
1165 nl_msg_put_be32(request, TCA_TUNNEL_KEY_ENC_KEY_ID, id32);
1166 if (ipv4_dst) {
1167 nl_msg_put_be32(request, TCA_TUNNEL_KEY_ENC_IPV4_SRC, ipv4_src);
1168 nl_msg_put_be32(request, TCA_TUNNEL_KEY_ENC_IPV4_DST, ipv4_dst);
1169 } else if (!is_all_zeros(ipv6_dst, sizeof *ipv6_dst)) {
1170 nl_msg_put_in6_addr(request, TCA_TUNNEL_KEY_ENC_IPV6_DST,
1171 ipv6_dst);
1172 nl_msg_put_in6_addr(request, TCA_TUNNEL_KEY_ENC_IPV6_SRC,
1173 ipv6_src);
1174 }
1175 nl_msg_put_be16(request, TCA_TUNNEL_KEY_ENC_DST_PORT, tp_dst);
1176 }
1177 nl_msg_end_nested(request, offset);
1178}
1179
1180static void
1181nl_msg_put_act_drop(struct ofpbuf *request)
1182{
1183 size_t offset;
1184
1185 nl_msg_put_string(request, TCA_ACT_KIND, "gact");
1186 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1187 {
1188 struct tc_gact p = { .action = TC_ACT_SHOT };
1189
1190 nl_msg_put_unspec(request, TCA_GACT_PARMS, &p, sizeof p);
1191 }
1192 nl_msg_end_nested(request, offset);
1193}
1194
1195static void
1196nl_msg_put_act_redirect(struct ofpbuf *request, int ifindex)
1197{
1198 size_t offset;
1199
1200 nl_msg_put_string(request, TCA_ACT_KIND, "mirred");
1201 offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
1202 {
1203 struct tc_mirred m = { .action = TC_ACT_STOLEN,
1204 .eaction = TCA_EGRESS_REDIR,
1205 .ifindex = ifindex };
1206
1207 nl_msg_put_unspec(request, TCA_MIRRED_PARMS, &m, sizeof m);
1208 }
1209 nl_msg_end_nested(request, offset);
1210}
1211
1212static inline void
1213nl_msg_put_act_cookie(struct ofpbuf *request, struct tc_cookie *ck) {
1214 if (ck->len) {
1215 nl_msg_put_unspec(request, TCA_ACT_COOKIE, ck->data, ck->len);
1216 }
1217}
1218
8ada482b
PB		 1219/* Given flower, a key_to_pedit map entry, calculates the rest,
1220 * where:
1221 *
1222 * mask, data - pointers of where read the first word of flower->key/mask.
1223 * current_offset - which offset to use for the first pedit action.
1224 * cnt - max pedits actions to use.
1225 * first_word_mask/last_word_mask - the mask to use for the first/last read
1226 * (as we read entire words). */
f98e418f 1227static void
8ada482b
PB		 1228calc_offsets(struct tc_flower *flower, struct flower_key_to_pedit *m,
1229 int *cur_offset, int *cnt, uint32_t *last_word_mask,
1230 uint32_t *first_word_mask, uint32_t **mask, uint32_t **data)
1231{
1232 int start_offset, max_offset, total_size;
1233 int diff, right_zero_bits, left_zero_bits;
1234 char *rewrite_key = (void *) &flower->rewrite.key;
1235 char *rewrite_mask = (void *) &flower->rewrite.mask;
1236
1237 max_offset = m->offset + m->size;
1238 start_offset = ROUND_DOWN(m->offset, 4);
1239 diff = m->offset - start_offset;
1240 total_size = max_offset - start_offset;
1241 right_zero_bits = 8 * (4 - (max_offset % 4));
1242 left_zero_bits = 8 * (m->offset - start_offset);
1243
1244 *cur_offset = start_offset;
1245 *cnt = (total_size / 4) + (total_size % 4 ? 1 : 0);
1246 *last_word_mask = UINT32_MAX >> right_zero_bits;
1247 *first_word_mask = UINT32_MAX << left_zero_bits;
1248 *data = (void *) (rewrite_key + m->flower_offset - diff);
1249 *mask = (void *) (rewrite_mask + m->flower_offset - diff);
1250}
1251
d6118e62 1252static inline int
8ada482b
PB		 1253csum_update_flag(struct tc_flower *flower,
1254 enum pedit_header_type htype) {
d6118e62
PB		 1255 /* Explictily specifiy the csum flags so HW can return EOPNOTSUPP
1256 * if it doesn't support a checksum recalculation of some headers.
1257 * And since OVS allows a flow such as
1258 * eth(dst=<mac>),eth_type(0x0800) actions=set(ipv4(src=<new_ip>))
1259 * we need to force a more specific flow as this can, for example,
1260 * need a recalculation of icmp checksum if the packet that passes
1261 * is icmp and tcp checksum if its tcp. */
1262
1263 switch (htype) {
1264 case TCA_PEDIT_KEY_EX_HDR_TYPE_IP4:
8ada482b 1265 flower->csum_update_flags |= TCA_CSUM_UPDATE_FLAG_IPV4HDR;
eeb0ca88 1266 /* Fall through. */
d6118e62
PB		 1267 case TCA_PEDIT_KEY_EX_HDR_TYPE_IP6:
1268 case TCA_PEDIT_KEY_EX_HDR_TYPE_TCP:
1269 case TCA_PEDIT_KEY_EX_HDR_TYPE_UDP:
8ada482b 1270 if (flower->key.ip_proto == IPPROTO_TCP) {
d6118e62 1271 flower->needs_full_ip_proto_mask = true;
8ada482b
PB		 1272 flower->csum_update_flags |= TCA_CSUM_UPDATE_FLAG_TCP;
1273 } else if (flower->key.ip_proto == IPPROTO_UDP) {
d6118e62 1274 flower->needs_full_ip_proto_mask = true;
8ada482b
PB		 1275 flower->csum_update_flags |= TCA_CSUM_UPDATE_FLAG_UDP;
1276 } else if (flower->key.ip_proto == IPPROTO_ICMP
1277 || flower->key.ip_proto == IPPROTO_ICMPV6) {
d6118e62 1278 flower->needs_full_ip_proto_mask = true;
8ada482b 1279 flower->csum_update_flags |= TCA_CSUM_UPDATE_FLAG_ICMP;
d6118e62
PB		 1280 } else {
1281 VLOG_WARN_RL(&error_rl,
1282 "can't offload rewrite of IP/IPV6 with ip_proto: %d",
1283 flower->key.ip_proto);
1284 break;
8ada482b 1285 }
eeb0ca88 1286 /* Fall through. */
d6118e62
PB		 1287 case TCA_PEDIT_KEY_EX_HDR_TYPE_ETH:
1288 return 0; /* success */
1289
1290 case TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK:
1291 case __PEDIT_HDR_TYPE_MAX:
1292 default:
1293 break;
8ada482b 1294 }
d6118e62
PB		 1295
1296 return EOPNOTSUPP;
8ada482b
PB		 1297}
1298
1299static int
1300nl_msg_put_flower_rewrite_pedits(struct ofpbuf *request,
1301 struct tc_flower *flower)
1302{
1303 struct {
1304 struct tc_pedit sel;
1305 struct tc_pedit_key keys[MAX_PEDIT_OFFSETS];
1306 struct tc_pedit_key_ex keys_ex[MAX_PEDIT_OFFSETS];
1307 } sel = {
1308 .sel = {
1309 .nkeys = 0
1310 }
1311 };
d6118e62 1312 int i, j, err;
8ada482b
PB		 1313
1314 for (i = 0; i < ARRAY_SIZE(flower_pedit_map); i++) {
1315 struct flower_key_to_pedit *m = &flower_pedit_map[i];
1316 struct tc_pedit_key *pedit_key = NULL;
1317 struct tc_pedit_key_ex *pedit_key_ex = NULL;
1318 uint32_t *mask, *data, first_word_mask, last_word_mask;
1319 int cnt = 0, cur_offset = 0;
1320
1321 if (!m->size) {
1322 continue;
1323 }
1324
1325 calc_offsets(flower, m, &cur_offset, &cnt, &last_word_mask,
1326 &first_word_mask, &mask, &data);
1327
1328 for (j = 0; j < cnt; j++, mask++, data++, cur_offset += 4) {
1329 uint32_t mask_word = *mask;
1330
1331 if (j == 0) {
1332 mask_word &= first_word_mask;
1333 }
1334 if (j == cnt - 1) {
1335 mask_word &= last_word_mask;
1336 }
1337 if (!mask_word) {
1338 continue;
1339 }
1340 if (sel.sel.nkeys == MAX_PEDIT_OFFSETS) {
1341 VLOG_WARN_RL(&error_rl, "reached too many pedit offsets: %d",
1342 MAX_PEDIT_OFFSETS);
1343 return EOPNOTSUPP;
1344 }
1345
1346 pedit_key = &sel.keys[sel.sel.nkeys];
1347 pedit_key_ex = &sel.keys_ex[sel.sel.nkeys];
1348 pedit_key_ex->cmd = TCA_PEDIT_KEY_EX_CMD_SET;
1349 pedit_key_ex->htype = m->htype;
1350 pedit_key->off = cur_offset;
1351 pedit_key->mask = ~mask_word;
1352 pedit_key->val = *data & mask_word;
1353 sel.sel.nkeys++;
d6118e62
PB		 1354
1355 err = csum_update_flag(flower, m->htype);
1356 if (err) {
1357 return err;
1358 }
1359
1360 if (flower->needs_full_ip_proto_mask) {
1361 flower->mask.ip_proto = UINT8_MAX;
1362 }
8ada482b
PB		 1363 }
1364 }
1365 nl_msg_put_act_pedit(request, &sel.sel, sel.keys_ex);
1366
1367 return 0;
1368}
1369
1370static int
f98e418f
RD		 1371nl_msg_put_flower_acts(struct ofpbuf *request, struct tc_flower *flower)
1372{
1373 size_t offset;
1374 size_t act_offset;
1375
1376 offset = nl_msg_start_nested(request, TCA_FLOWER_ACT);
1377 {
1378 uint16_t act_index = 1;
8ada482b
PB		 1379 int error;
1380
1381 if (flower->rewrite.rewrite) {
1382 act_offset = nl_msg_start_nested(request, act_index++);
1383 error = nl_msg_put_flower_rewrite_pedits(request, flower);
1384 if (error) {
1385 return error;
1386 }
1387 nl_msg_end_nested(request, act_offset);
f98e418f 1388
a7ce5b85
PB		 1389 if (flower->csum_update_flags) {
1390 act_offset = nl_msg_start_nested(request, act_index++);
1391 nl_msg_put_act_csum(request, flower->csum_update_flags);
1392 nl_msg_end_nested(request, act_offset);
1393 }
8ada482b 1394 }
23e670c4
JH		 1395 if (flower->tunnel.tunnel) {
1396 act_offset = nl_msg_start_nested(request, act_index++);
1397 nl_msg_put_act_tunnel_key_release(request);
1398 nl_msg_end_nested(request, act_offset);
1399 }
f98e418f
RD		 1400 if (flower->set.set) {
1401 act_offset = nl_msg_start_nested(request, act_index++);
1402 nl_msg_put_act_tunnel_key_set(request, flower->set.id,
1403 flower->set.ipv4.ipv4_src,
1404 flower->set.ipv4.ipv4_dst,
1405 &flower->set.ipv6.ipv6_src,
1406 &flower->set.ipv6.ipv6_dst,
1407 flower->set.tp_dst);
1408 nl_msg_end_nested(request, act_offset);
1409 }
f98e418f
RD		 1410 if (flower->vlan_pop) {
1411 act_offset = nl_msg_start_nested(request, act_index++);
1412 nl_msg_put_act_pop_vlan(request);
1413 nl_msg_end_nested(request, act_offset);
1414 }
1415 if (flower->vlan_push_id) {
1416 act_offset = nl_msg_start_nested(request, act_index++);
1417 nl_msg_put_act_push_vlan(request,
1418 flower->vlan_push_id,
1419 flower->vlan_push_prio);
1420 nl_msg_end_nested(request, act_offset);
1421 }
1422 if (flower->ifindex_out) {
1423 act_offset = nl_msg_start_nested(request, act_index++);
1424 nl_msg_put_act_redirect(request, flower->ifindex_out);
1425 nl_msg_put_act_cookie(request, &flower->act_cookie);
1426 nl_msg_end_nested(request, act_offset);
1427 } else {
1428 act_offset = nl_msg_start_nested(request, act_index++);
1429 nl_msg_put_act_drop(request);
1430 nl_msg_put_act_cookie(request, &flower->act_cookie);
1431 nl_msg_end_nested(request, act_offset);
1432 }
1433 }
1434 nl_msg_end_nested(request, offset);
8ada482b
PB		 1435
1436 return 0;
f98e418f
RD		 1437}
1438
1439static void
1440nl_msg_put_masked_value(struct ofpbuf *request, uint16_t type,
1441 uint16_t mask_type, const void *data,
1442 const void *mask_data, size_t len)
1443{
1444 if (mask_type != TCA_FLOWER_UNSPEC) {
1445 if (is_all_zeros(mask_data, len)) {
1446 return;
1447 }
1448 nl_msg_put_unspec(request, mask_type, mask_data, len);
1449 }
1450 nl_msg_put_unspec(request, type, data, len);
1451}
1452
1453static void
1454nl_msg_put_flower_tunnel(struct ofpbuf *request, struct tc_flower *flower)
1455{
1456 ovs_be32 ipv4_src = flower->tunnel.ipv4.ipv4_src;
1457 ovs_be32 ipv4_dst = flower->tunnel.ipv4.ipv4_dst;
1458 struct in6_addr *ipv6_src = &flower->tunnel.ipv6.ipv6_src;
1459 struct in6_addr *ipv6_dst = &flower->tunnel.ipv6.ipv6_dst;
1460 ovs_be16 tp_dst = flower->tunnel.tp_dst;
1461 ovs_be32 id = be64_to_be32(flower->tunnel.id);
1462
1463 nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_KEY_ID, id);
1464 if (ipv4_dst) {
1465 nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_IPV4_SRC, ipv4_src);
1466 nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_IPV4_DST, ipv4_dst);
1467 } else if (!is_all_zeros(ipv6_dst, sizeof *ipv6_dst)) {
1468 nl_msg_put_in6_addr(request, TCA_FLOWER_KEY_ENC_IPV6_SRC, ipv6_src);
1469 nl_msg_put_in6_addr(request, TCA_FLOWER_KEY_ENC_IPV6_DST, ipv6_dst);
1470 }
1471 nl_msg_put_be16(request, TCA_FLOWER_KEY_ENC_UDP_DST_PORT, tp_dst);
1472}
1473
bb170644
PB		 1474#define FLOWER_PUT_MASKED_VALUE(member, type) \
1475 nl_msg_put_masked_value(request, type, type##_MASK, &flower->key.member, \
1476 &flower->mask.member, sizeof flower->key.member)
1477
8ada482b 1478static int
f98e418f
RD		 1479nl_msg_put_flower_options(struct ofpbuf *request, struct tc_flower *flower)
1480{
8ada482b 1481
f98e418f
RD		 1482 uint16_t host_eth_type = ntohs(flower->key.eth_type);
1483 bool is_vlan = (host_eth_type == ETH_TYPE_VLAN);
8ada482b
PB		 1484 int err;
1485
d6118e62
PB		 1486 /* need to parse acts first as some acts require changing the matching
1487 * see csum_update_flag() */
8ada482b
PB		 1488 err = nl_msg_put_flower_acts(request, flower);
1489 if (err) {
1490 return err;
1491 }
f98e418f
RD		 1492
1493 if (is_vlan) {
1494 host_eth_type = ntohs(flower->key.encap_eth_type);
1495 }
1496
bb170644
PB		 1497 FLOWER_PUT_MASKED_VALUE(dst_mac, TCA_FLOWER_KEY_ETH_DST);
1498 FLOWER_PUT_MASKED_VALUE(src_mac, TCA_FLOWER_KEY_ETH_SRC);
f98e418f
RD		 1499
1500 if (host_eth_type == ETH_P_IP || host_eth_type == ETH_P_IPV6) {
1501 if (flower->mask.ip_proto && flower->key.ip_proto) {
1502 nl_msg_put_u8(request, TCA_FLOWER_KEY_IP_PROTO,
1503 flower->key.ip_proto);
1504 }
1505
83e86606 1506 if (flower->mask.flags) {
7e0f69b5 1507 nl_msg_put_be32(request, TCA_FLOWER_KEY_FLAGS,
83e86606 1508 htonl(flower->key.flags));
7e0f69b5 1509 nl_msg_put_be32(request, TCA_FLOWER_KEY_FLAGS_MASK,
83e86606
RD		 1510 htonl(flower->mask.flags));
1511 }
1512
f98e418f 1513 if (flower->key.ip_proto == IPPROTO_UDP) {
2b1d9fa9
PB		 1514 FLOWER_PUT_MASKED_VALUE(udp_src, TCA_FLOWER_KEY_UDP_SRC);
1515 FLOWER_PUT_MASKED_VALUE(udp_dst, TCA_FLOWER_KEY_UDP_DST);
f98e418f 1516 } else if (flower->key.ip_proto == IPPROTO_TCP) {
2b1d9fa9
PB		 1517 FLOWER_PUT_MASKED_VALUE(tcp_src, TCA_FLOWER_KEY_TCP_SRC);
1518 FLOWER_PUT_MASKED_VALUE(tcp_dst, TCA_FLOWER_KEY_TCP_DST);
cd081043 1519 FLOWER_PUT_MASKED_VALUE(tcp_flags, TCA_FLOWER_KEY_TCP_FLAGS);
4862b4e5 1520 } else if (flower->key.ip_proto == IPPROTO_SCTP) {
2b1d9fa9
PB		 1521 FLOWER_PUT_MASKED_VALUE(sctp_src, TCA_FLOWER_KEY_SCTP_SRC);
1522 FLOWER_PUT_MASKED_VALUE(sctp_dst, TCA_FLOWER_KEY_SCTP_DST);
f98e418f
RD		 1523 }
1524 }
1525
1526 if (host_eth_type == ETH_P_IP) {
bb170644
PB		 1527 FLOWER_PUT_MASKED_VALUE(ipv4.ipv4_src, TCA_FLOWER_KEY_IPV4_SRC);
1528 FLOWER_PUT_MASKED_VALUE(ipv4.ipv4_dst, TCA_FLOWER_KEY_IPV4_DST);
0b4b5203 1529 FLOWER_PUT_MASKED_VALUE(ip_ttl, TCA_FLOWER_KEY_IP_TTL);
f98e418f 1530 } else if (host_eth_type == ETH_P_IPV6) {
bb170644
PB		 1531 FLOWER_PUT_MASKED_VALUE(ipv6.ipv6_src, TCA_FLOWER_KEY_IPV6_SRC);
1532 FLOWER_PUT_MASKED_VALUE(ipv6.ipv6_dst, TCA_FLOWER_KEY_IPV6_DST);
f98e418f
RD		 1533 }
1534
1535 nl_msg_put_be16(request, TCA_FLOWER_KEY_ETH_TYPE, flower->key.eth_type);
1536
1537 if (is_vlan) {
1538 if (flower->key.vlan_id || flower->key.vlan_prio) {
1539 nl_msg_put_u16(request, TCA_FLOWER_KEY_VLAN_ID,
1540 flower->key.vlan_id);
1541 nl_msg_put_u8(request, TCA_FLOWER_KEY_VLAN_PRIO,
1542 flower->key.vlan_prio);
1543 }
1544 if (flower->key.encap_eth_type) {
1545 nl_msg_put_be16(request, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
1546 flower->key.encap_eth_type);
1547 }
1548 }
1549
691d20cb 1550 nl_msg_put_u32(request, TCA_FLOWER_FLAGS, tc_get_tc_cls_policy(tc_policy));
f98e418f
RD		 1551
1552 if (flower->tunnel.tunnel) {
1553 nl_msg_put_flower_tunnel(request, flower);
1554 }
1555
8ada482b 1556 return 0;
f98e418f
RD		 1557}
1558
1559int
1560tc_replace_flower(int ifindex, uint16_t prio, uint32_t handle,
1561 struct tc_flower *flower)
1562{
1563 struct ofpbuf request;
1564 struct tcmsg *tcmsg;
1565 struct ofpbuf *reply;
1566 int error = 0;
1567 size_t basic_offset;
1568 uint16_t eth_type = (OVS_FORCE uint16_t) flower->key.eth_type;
1569
1570 tcmsg = tc_make_request(ifindex, RTM_NEWTFILTER,
1571 NLM_F_CREATE | NLM_F_ECHO, &request);
1572 tcmsg->tcm_parent = TC_INGRESS_PARENT;
1573 tcmsg->tcm_info = tc_make_handle(prio, eth_type);
1574 tcmsg->tcm_handle = handle;
1575
1576 nl_msg_put_string(&request, TCA_KIND, "flower");
1577 basic_offset = nl_msg_start_nested(&request, TCA_OPTIONS);
1578 {
8ada482b
PB		 1579 error = nl_msg_put_flower_options(&request, flower);
1580
1581 if (error) {
1582 ofpbuf_uninit(&request);
1583 return error;
1584 }
f98e418f
RD		 1585 }
1586 nl_msg_end_nested(&request, basic_offset);
1587
1588 error = tc_transact(&request, &reply);
1589 if (!error) {
1590 struct tcmsg *tc =
1591 ofpbuf_at_assert(reply, NLMSG_HDRLEN, sizeof *tc);
1592
1593 flower->prio = tc_get_major(tc->tcm_info);
1594 flower->handle = tc->tcm_handle;
1595 ofpbuf_delete(reply);
1596 }
1597
1598 return error;
1599}
691d20cb
PB		 1600
1601void
1602tc_set_policy(const char *policy)
1603{
1604 if (!policy) {
1605 return;
1606 }
1607
1608 if (!strcmp(policy, "skip_sw")) {
1609 tc_policy = TC_POLICY_SKIP_SW;
1610 } else if (!strcmp(policy, "skip_hw")) {
1611 tc_policy = TC_POLICY_SKIP_HW;
1612 } else if (!strcmp(policy, "none")) {
1613 tc_policy = TC_POLICY_NONE;
1614 } else {
1615 VLOG_WARN("tc: Invalid policy '%s'", policy);
1616 return;
1617 }
1618
1619 VLOG_INFO("tc: Using policy '%s'", policy);
1620}
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