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Commit | Line | Data |
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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 | ||
093c9458 JH |
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 | ||
c1c5c723 PB |
54 | VLOG_DEFINE_THIS_MODULE(tc); |
55 | ||
f98e418f RD |
56 | static struct vlog_rate_limit error_rl = VLOG_RATE_LIMIT_INIT(60, 5); |
57 | ||
691d20cb PB |
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 | ||
8ada482b PB |
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; | |
8ada482b | 73 | int offset; |
fbaf1bf9 | 74 | int flower_offset; |
8ada482b PB |
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 | ||
d6118e62 PB |
142 | static inline int |
143 | csum_update_flag(struct tc_flower *flower, | |
144 | enum pedit_header_type htype); | |
145 | ||
c1c5c723 PB |
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 | * | |
093c9458 JH |
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 | * | |
c1c5c723 PB |
188 | * Returns 0 if successful, otherwise a positive errno value. |
189 | */ | |
190 | int | |
093c9458 | 191 | tc_add_del_ingress_qdisc(int ifindex, bool add, uint32_t block_id) |
c1c5c723 PB |
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); | |
209832d5 | 200 | tcmsg->tcm_handle = TC_H_MAKE(TC_H_INGRESS, 0); |
c1c5c723 PB |
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); | |
093c9458 JH |
204 | if (block_id) { |
205 | nl_msg_put_u32(&request, TCA_INGRESS_BLOCK, block_id); | |
206 | } | |
c1c5c723 PB |
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 | } | |
f98e418f RD |
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, }, | |
4862b4e5 VB |
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, }, | |
f98e418f RD |
275 | [TCA_FLOWER_KEY_VLAN_ID] = { .type = NL_A_U16, .optional = true, }, |
276 | [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NL_A_U8, .optional = true, }, | |
277 | [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NL_A_U16, .optional = true, }, | |
278 | [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NL_A_U32, .optional = true, }, | |
279 | [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NL_A_U32, .optional = true, }, | |
280 | [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NL_A_U32, .optional = true, }, | |
281 | [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NL_A_U32, | |
282 | .optional = true, }, | |
283 | [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NL_A_U32, | |
284 | .optional = true, }, | |
285 | [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .type = NL_A_UNSPEC, | |
286 | .min_len = sizeof(struct in6_addr), | |
287 | .optional = true, }, | |
288 | [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .type = NL_A_UNSPEC, | |
289 | .min_len = sizeof(struct in6_addr), | |
290 | .optional = true, }, | |
291 | [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .type = NL_A_UNSPEC, | |
292 | .min_len = sizeof(struct in6_addr), | |
293 | .optional = true, }, | |
294 | [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .type = NL_A_UNSPEC, | |
295 | .min_len = sizeof(struct in6_addr), | |
296 | .optional = true, }, | |
297 | [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NL_A_U16, | |
298 | .optional = true, }, | |
83e86606 RD |
299 | [TCA_FLOWER_KEY_FLAGS] = { .type = NL_A_BE32, .optional = true, }, |
300 | [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NL_A_BE32, .optional = true, }, | |
0b4b5203 PB |
301 | [TCA_FLOWER_KEY_IP_TTL] = { .type = NL_A_U8, |
302 | .optional = true, }, | |
303 | [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NL_A_U8, | |
304 | .optional = true, }, | |
cd081043 PB |
305 | [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NL_A_U16, |
306 | .optional = true, }, | |
307 | [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NL_A_U16, | |
308 | .optional = true, }, | |
f98e418f RD |
309 | }; |
310 | ||
311 | static void | |
312 | nl_parse_flower_eth(struct nlattr **attrs, struct tc_flower *flower) | |
313 | { | |
314 | const struct eth_addr *eth; | |
315 | ||
316 | if (attrs[TCA_FLOWER_KEY_ETH_SRC_MASK]) { | |
317 | eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_SRC], ETH_ALEN); | |
318 | memcpy(&flower->key.src_mac, eth, sizeof flower->key.src_mac); | |
319 | ||
320 | eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_SRC_MASK], ETH_ALEN); | |
321 | memcpy(&flower->mask.src_mac, eth, sizeof flower->mask.src_mac); | |
322 | } | |
323 | if (attrs[TCA_FLOWER_KEY_ETH_DST_MASK]) { | |
324 | eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_DST], ETH_ALEN); | |
325 | memcpy(&flower->key.dst_mac, eth, sizeof flower->key.dst_mac); | |
326 | ||
327 | eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_DST_MASK], ETH_ALEN); | |
328 | memcpy(&flower->mask.dst_mac, eth, sizeof flower->mask.dst_mac); | |
329 | } | |
330 | } | |
331 | ||
332 | static void | |
333 | nl_parse_flower_vlan(struct nlattr **attrs, struct tc_flower *flower) | |
334 | { | |
b5ad40a9 | 335 | if (!eth_type_vlan(flower->key.eth_type)) { |
f98e418f RD |
336 | return; |
337 | } | |
338 | ||
339 | flower->key.encap_eth_type = | |
340 | nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ETH_TYPE]); | |
341 | ||
342 | if (attrs[TCA_FLOWER_KEY_VLAN_ID]) { | |
343 | flower->key.vlan_id = | |
344 | nl_attr_get_u16(attrs[TCA_FLOWER_KEY_VLAN_ID]); | |
345 | } | |
346 | if (attrs[TCA_FLOWER_KEY_VLAN_PRIO]) { | |
347 | flower->key.vlan_prio = | |
348 | nl_attr_get_u8(attrs[TCA_FLOWER_KEY_VLAN_PRIO]); | |
349 | } | |
350 | } | |
351 | ||
352 | static void | |
353 | nl_parse_flower_tunnel(struct nlattr **attrs, struct tc_flower *flower) | |
354 | { | |
355 | if (attrs[TCA_FLOWER_KEY_ENC_KEY_ID]) { | |
356 | ovs_be32 id = nl_attr_get_be32(attrs[TCA_FLOWER_KEY_ENC_KEY_ID]); | |
357 | ||
358 | flower->tunnel.id = be32_to_be64(id); | |
359 | } | |
360 | if (attrs[TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK]) { | |
361 | flower->tunnel.ipv4.ipv4_src = | |
362 | nl_attr_get_be32(attrs[TCA_FLOWER_KEY_ENC_IPV4_SRC]); | |
363 | } | |
364 | if (attrs[TCA_FLOWER_KEY_ENC_IPV4_DST_MASK]) { | |
365 | flower->tunnel.ipv4.ipv4_dst = | |
366 | nl_attr_get_be32(attrs[TCA_FLOWER_KEY_ENC_IPV4_DST]); | |
367 | } | |
368 | if (attrs[TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK]) { | |
369 | flower->tunnel.ipv6.ipv6_src = | |
370 | nl_attr_get_in6_addr(attrs[TCA_FLOWER_KEY_ENC_IPV6_SRC]); | |
371 | } | |
372 | if (attrs[TCA_FLOWER_KEY_ENC_IPV6_DST_MASK]) { | |
373 | flower->tunnel.ipv6.ipv6_dst = | |
374 | nl_attr_get_in6_addr(attrs[TCA_FLOWER_KEY_ENC_IPV6_DST]); | |
375 | } | |
376 | if (attrs[TCA_FLOWER_KEY_ENC_UDP_DST_PORT]) { | |
377 | flower->tunnel.tp_dst = | |
378 | nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ENC_UDP_DST_PORT]); | |
379 | } | |
380 | } | |
381 | ||
382 | static void | |
383 | nl_parse_flower_ip(struct nlattr **attrs, struct tc_flower *flower) { | |
384 | uint8_t ip_proto = 0; | |
385 | struct tc_flower_key *key = &flower->key; | |
386 | struct tc_flower_key *mask = &flower->mask; | |
387 | ||
388 | if (attrs[TCA_FLOWER_KEY_IP_PROTO]) { | |
389 | ip_proto = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_IP_PROTO]); | |
390 | key->ip_proto = ip_proto; | |
391 | mask->ip_proto = UINT8_MAX; | |
392 | } | |
393 | ||
83e86606 | 394 | if (attrs[TCA_FLOWER_KEY_FLAGS_MASK]) { |
7e0f69b5 IS |
395 | key->flags = ntohl(nl_attr_get_be32(attrs[TCA_FLOWER_KEY_FLAGS])); |
396 | mask->flags = | |
397 | ntohl(nl_attr_get_be32(attrs[TCA_FLOWER_KEY_FLAGS_MASK])); | |
83e86606 RD |
398 | } |
399 | ||
f98e418f RD |
400 | if (attrs[TCA_FLOWER_KEY_IPV4_SRC_MASK]) { |
401 | key->ipv4.ipv4_src = | |
402 | nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_SRC]); | |
403 | mask->ipv4.ipv4_src = | |
404 | nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_SRC_MASK]); | |
405 | } | |
406 | if (attrs[TCA_FLOWER_KEY_IPV4_DST_MASK]) { | |
407 | key->ipv4.ipv4_dst = | |
408 | nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_DST]); | |
409 | mask->ipv4.ipv4_dst = | |
410 | nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_DST_MASK]); | |
411 | } | |
412 | if (attrs[TCA_FLOWER_KEY_IPV6_SRC_MASK]) { | |
413 | struct nlattr *attr = attrs[TCA_FLOWER_KEY_IPV6_SRC]; | |
414 | struct nlattr *attr_mask = attrs[TCA_FLOWER_KEY_IPV6_SRC_MASK]; | |
415 | ||
416 | key->ipv6.ipv6_src = nl_attr_get_in6_addr(attr); | |
417 | mask->ipv6.ipv6_src = nl_attr_get_in6_addr(attr_mask); | |
418 | } | |
419 | if (attrs[TCA_FLOWER_KEY_IPV6_DST_MASK]) { | |
420 | struct nlattr *attr = attrs[TCA_FLOWER_KEY_IPV6_DST]; | |
421 | struct nlattr *attr_mask = attrs[TCA_FLOWER_KEY_IPV6_DST_MASK]; | |
422 | ||
423 | key->ipv6.ipv6_dst = nl_attr_get_in6_addr(attr); | |
424 | mask->ipv6.ipv6_dst = nl_attr_get_in6_addr(attr_mask); | |
425 | } | |
426 | ||
427 | if (ip_proto == IPPROTO_TCP) { | |
428 | if (attrs[TCA_FLOWER_KEY_TCP_SRC_MASK]) { | |
2b1d9fa9 | 429 | key->tcp_src = |
f98e418f | 430 | nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_SRC]); |
2b1d9fa9 | 431 | mask->tcp_src = |
f98e418f RD |
432 | nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_SRC_MASK]); |
433 | } | |
434 | if (attrs[TCA_FLOWER_KEY_TCP_DST_MASK]) { | |
2b1d9fa9 | 435 | key->tcp_dst = |
f98e418f | 436 | nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_DST]); |
2b1d9fa9 | 437 | mask->tcp_dst = |
f98e418f RD |
438 | nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_DST_MASK]); |
439 | } | |
cd081043 PB |
440 | if (attrs[TCA_FLOWER_KEY_TCP_FLAGS_MASK]) { |
441 | key->tcp_flags = | |
442 | nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_FLAGS]); | |
443 | mask->tcp_flags = | |
444 | nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_FLAGS_MASK]); | |
445 | } | |
f98e418f RD |
446 | } else if (ip_proto == IPPROTO_UDP) { |
447 | if (attrs[TCA_FLOWER_KEY_UDP_SRC_MASK]) { | |
2b1d9fa9 PB |
448 | key->udp_src = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_SRC]); |
449 | mask->udp_src = | |
f98e418f RD |
450 | nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_SRC_MASK]); |
451 | } | |
452 | if (attrs[TCA_FLOWER_KEY_UDP_DST_MASK]) { | |
2b1d9fa9 PB |
453 | key->udp_dst = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_DST]); |
454 | mask->udp_dst = | |
f98e418f RD |
455 | nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_DST_MASK]); |
456 | } | |
4862b4e5 VB |
457 | } else if (ip_proto == IPPROTO_SCTP) { |
458 | if (attrs[TCA_FLOWER_KEY_SCTP_SRC_MASK]) { | |
2b1d9fa9 PB |
459 | key->sctp_src = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_SCTP_SRC]); |
460 | mask->sctp_src = | |
4862b4e5 VB |
461 | nl_attr_get_be16(attrs[TCA_FLOWER_KEY_SCTP_SRC_MASK]); |
462 | } | |
463 | if (attrs[TCA_FLOWER_KEY_SCTP_DST_MASK]) { | |
2b1d9fa9 PB |
464 | key->sctp_dst = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_SCTP_DST]); |
465 | mask->sctp_dst = | |
4862b4e5 VB |
466 | nl_attr_get_be16(attrs[TCA_FLOWER_KEY_SCTP_DST_MASK]); |
467 | } | |
f98e418f | 468 | } |
0b4b5203 PB |
469 | |
470 | if (attrs[TCA_FLOWER_KEY_IP_TTL_MASK]) { | |
471 | key->ip_ttl = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_IP_TTL]); | |
472 | mask->ip_ttl = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_IP_TTL_MASK]); | |
473 | } | |
f98e418f RD |
474 | } |
475 | ||
d63ca532 GT |
476 | static enum tc_offloaded_state |
477 | nl_get_flower_offloaded_state(struct nlattr **attrs) | |
478 | { | |
479 | uint32_t flower_flags = 0; | |
480 | ||
481 | if (attrs[TCA_FLOWER_FLAGS]) { | |
482 | flower_flags = nl_attr_get_u32(attrs[TCA_FLOWER_FLAGS]); | |
483 | if (flower_flags & TCA_CLS_FLAGS_NOT_IN_HW) { | |
484 | return TC_OFFLOADED_STATE_NOT_IN_HW; | |
485 | } else if (flower_flags & TCA_CLS_FLAGS_IN_HW) { | |
486 | return TC_OFFLOADED_STATE_IN_HW; | |
487 | } | |
488 | } | |
489 | return TC_OFFLOADED_STATE_UNDEFINED; | |
490 | } | |
491 | ||
492 | static void | |
493 | nl_parse_flower_flags(struct nlattr **attrs, struct tc_flower *flower) | |
494 | { | |
495 | flower->offloaded_state = nl_get_flower_offloaded_state(attrs); | |
496 | } | |
497 | ||
8ada482b PB |
498 | static const struct nl_policy pedit_policy[] = { |
499 | [TCA_PEDIT_PARMS_EX] = { .type = NL_A_UNSPEC, | |
500 | .min_len = sizeof(struct tc_pedit), | |
501 | .optional = false, }, | |
502 | [TCA_PEDIT_KEYS_EX] = { .type = NL_A_NESTED, | |
503 | .optional = false, }, | |
504 | }; | |
505 | ||
506 | static int | |
507 | nl_parse_act_pedit(struct nlattr *options, struct tc_flower *flower) | |
508 | { | |
0c70132c | 509 | struct tc_action *action; |
8ada482b PB |
510 | struct nlattr *pe_attrs[ARRAY_SIZE(pedit_policy)]; |
511 | const struct tc_pedit *pe; | |
512 | const struct tc_pedit_key *keys; | |
513 | const struct nlattr *nla, *keys_ex, *ex_type; | |
514 | const void *keys_attr; | |
515 | char *rewrite_key = (void *) &flower->rewrite.key; | |
516 | char *rewrite_mask = (void *) &flower->rewrite.mask; | |
517 | size_t keys_ex_size, left; | |
d6118e62 | 518 | int type, i = 0, err; |
8ada482b PB |
519 | |
520 | if (!nl_parse_nested(options, pedit_policy, pe_attrs, | |
521 | ARRAY_SIZE(pedit_policy))) { | |
522 | VLOG_ERR_RL(&error_rl, "failed to parse pedit action options"); | |
523 | return EPROTO; | |
524 | } | |
525 | ||
526 | pe = nl_attr_get_unspec(pe_attrs[TCA_PEDIT_PARMS_EX], sizeof *pe); | |
527 | keys = pe->keys; | |
528 | keys_attr = pe_attrs[TCA_PEDIT_KEYS_EX]; | |
529 | keys_ex = nl_attr_get(keys_attr); | |
530 | keys_ex_size = nl_attr_get_size(keys_attr); | |
531 | ||
532 | NL_ATTR_FOR_EACH (nla, left, keys_ex, keys_ex_size) { | |
533 | if (i >= pe->nkeys) { | |
534 | break; | |
535 | } | |
536 | ||
408671c4 | 537 | if (nl_attr_type(nla) != TCA_PEDIT_KEY_EX) { |
8ada482b PB |
538 | VLOG_ERR_RL(&error_rl, "unable to parse legacy pedit type: %d", |
539 | nl_attr_type(nla)); | |
540 | return EOPNOTSUPP; | |
541 | } | |
542 | ||
543 | ex_type = nl_attr_find_nested(nla, TCA_PEDIT_KEY_EX_HTYPE); | |
544 | type = nl_attr_get_u16(ex_type); | |
545 | ||
d6118e62 PB |
546 | err = csum_update_flag(flower, type); |
547 | if (err) { | |
548 | return err; | |
549 | } | |
550 | ||
8ada482b PB |
551 | for (int j = 0; j < ARRAY_SIZE(flower_pedit_map); j++) { |
552 | struct flower_key_to_pedit *m = &flower_pedit_map[j]; | |
553 | int flower_off = m->flower_offset; | |
554 | int sz = m->size; | |
555 | int mf = m->offset; | |
556 | ||
557 | if (m->htype != type) { | |
558 | continue; | |
559 | } | |
560 | ||
561 | /* check overlap between current pedit key, which is always | |
562 | * 4 bytes (range [off, off + 3]), and a map entry in | |
563 | * flower_pedit_map (range [mf, mf + sz - 1]) */ | |
564 | if ((keys->off >= mf && keys->off < mf + sz) | |
565 | || (keys->off + 3 >= mf && keys->off + 3 < mf + sz)) { | |
566 | int diff = flower_off + (keys->off - mf); | |
567 | uint32_t *dst = (void *) (rewrite_key + diff); | |
568 | uint32_t *dst_m = (void *) (rewrite_mask + diff); | |
569 | uint32_t mask = ~(keys->mask); | |
570 | uint32_t zero_bits; | |
571 | ||
572 | if (keys->off < mf) { | |
573 | zero_bits = 8 * (mf - keys->off); | |
574 | mask &= UINT32_MAX << zero_bits; | |
575 | } else if (keys->off + 4 > mf + m->size) { | |
576 | zero_bits = 8 * (keys->off + 4 - mf - m->size); | |
577 | mask &= UINT32_MAX >> zero_bits; | |
578 | } | |
579 | ||
580 | *dst_m |= mask; | |
581 | *dst |= keys->val & mask; | |
582 | } | |
583 | } | |
584 | ||
585 | keys++; | |
586 | i++; | |
587 | } | |
588 | ||
0c70132c CM |
589 | action = &flower->actions[flower->action_count++]; |
590 | action->type = TC_ACT_PEDIT; | |
8ada482b PB |
591 | |
592 | return 0; | |
593 | } | |
594 | ||
f98e418f RD |
595 | static const struct nl_policy tunnel_key_policy[] = { |
596 | [TCA_TUNNEL_KEY_PARMS] = { .type = NL_A_UNSPEC, | |
597 | .min_len = sizeof(struct tc_tunnel_key), | |
598 | .optional = false, }, | |
599 | [TCA_TUNNEL_KEY_ENC_IPV4_SRC] = { .type = NL_A_U32, .optional = true, }, | |
600 | [TCA_TUNNEL_KEY_ENC_IPV4_DST] = { .type = NL_A_U32, .optional = true, }, | |
601 | [TCA_TUNNEL_KEY_ENC_IPV6_SRC] = { .type = NL_A_UNSPEC, | |
602 | .min_len = sizeof(struct in6_addr), | |
603 | .optional = true, }, | |
604 | [TCA_TUNNEL_KEY_ENC_IPV6_DST] = { .type = NL_A_UNSPEC, | |
605 | .min_len = sizeof(struct in6_addr), | |
606 | .optional = true, }, | |
607 | [TCA_TUNNEL_KEY_ENC_KEY_ID] = { .type = NL_A_U32, .optional = true, }, | |
608 | [TCA_TUNNEL_KEY_ENC_DST_PORT] = { .type = NL_A_U16, .optional = true, }, | |
609 | }; | |
610 | ||
611 | static int | |
612 | nl_parse_act_tunnel_key(struct nlattr *options, struct tc_flower *flower) | |
613 | { | |
614 | struct nlattr *tun_attrs[ARRAY_SIZE(tunnel_key_policy)]; | |
615 | const struct nlattr *tun_parms; | |
616 | const struct tc_tunnel_key *tun; | |
0c70132c | 617 | struct tc_action *action; |
f98e418f RD |
618 | |
619 | if (!nl_parse_nested(options, tunnel_key_policy, tun_attrs, | |
620 | ARRAY_SIZE(tunnel_key_policy))) { | |
621 | VLOG_ERR_RL(&error_rl, "failed to parse tunnel_key action options"); | |
622 | return EPROTO; | |
623 | } | |
624 | ||
625 | tun_parms = tun_attrs[TCA_TUNNEL_KEY_PARMS]; | |
626 | tun = nl_attr_get_unspec(tun_parms, sizeof *tun); | |
627 | if (tun->t_action == TCA_TUNNEL_KEY_ACT_SET) { | |
628 | struct nlattr *id = tun_attrs[TCA_TUNNEL_KEY_ENC_KEY_ID]; | |
629 | struct nlattr *dst_port = tun_attrs[TCA_TUNNEL_KEY_ENC_DST_PORT]; | |
630 | struct nlattr *ipv4_src = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV4_SRC]; | |
631 | struct nlattr *ipv4_dst = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV4_DST]; | |
632 | struct nlattr *ipv6_src = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV6_SRC]; | |
633 | struct nlattr *ipv6_dst = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV6_DST]; | |
634 | ||
0c70132c CM |
635 | action = &flower->actions[flower->action_count++]; |
636 | action->type = TC_ACT_ENCAP; | |
637 | action->encap.ipv4.ipv4_src = ipv4_src ? nl_attr_get_be32(ipv4_src) : 0; | |
638 | action->encap.ipv4.ipv4_dst = ipv4_dst ? nl_attr_get_be32(ipv4_dst) : 0; | |
f98e418f | 639 | if (ipv6_src) { |
0c70132c | 640 | action->encap.ipv6.ipv6_src = nl_attr_get_in6_addr(ipv6_src); |
f98e418f RD |
641 | } |
642 | if (ipv6_dst) { | |
0c70132c | 643 | action->encap.ipv6.ipv6_dst = nl_attr_get_in6_addr(ipv6_dst); |
f98e418f | 644 | } |
0c70132c CM |
645 | action->encap.id = id ? be32_to_be64(nl_attr_get_be32(id)) : 0; |
646 | action->encap.tp_dst = dst_port ? nl_attr_get_be16(dst_port) : 0; | |
f98e418f RD |
647 | } else if (tun->t_action == TCA_TUNNEL_KEY_ACT_RELEASE) { |
648 | flower->tunnel.tunnel = true; | |
649 | } else { | |
650 | VLOG_ERR_RL(&error_rl, "unknown tunnel actions: %d, %d", | |
651 | tun->action, tun->t_action); | |
652 | return EINVAL; | |
653 | } | |
654 | return 0; | |
655 | } | |
656 | ||
657 | static const struct nl_policy gact_policy[] = { | |
658 | [TCA_GACT_PARMS] = { .type = NL_A_UNSPEC, | |
659 | .min_len = sizeof(struct tc_gact), | |
660 | .optional = false, }, | |
661 | [TCA_GACT_TM] = { .type = NL_A_UNSPEC, | |
662 | .min_len = sizeof(struct tcf_t), | |
663 | .optional = false, }, | |
664 | }; | |
665 | ||
8c1e74d1 PB |
666 | static int |
667 | get_user_hz(void) | |
668 | { | |
669 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
670 | static int user_hz = 100; | |
671 | ||
672 | if (ovsthread_once_start(&once)) { | |
673 | user_hz = sysconf(_SC_CLK_TCK); | |
674 | ovsthread_once_done(&once); | |
675 | } | |
676 | ||
677 | return user_hz; | |
678 | } | |
f98e418f RD |
679 | |
680 | static void | |
681 | nl_parse_tcf(const struct tcf_t *tm, struct tc_flower *flower) | |
682 | { | |
8c1e74d1 | 683 | flower->lastused = time_msec() - (tm->lastuse * 1000 / get_user_hz()); |
f98e418f RD |
684 | } |
685 | ||
686 | static int | |
687 | nl_parse_act_drop(struct nlattr *options, struct tc_flower *flower) | |
688 | { | |
689 | struct nlattr *gact_attrs[ARRAY_SIZE(gact_policy)]; | |
690 | const struct tc_gact *p; | |
691 | struct nlattr *gact_parms; | |
692 | const struct tcf_t *tm; | |
693 | ||
694 | if (!nl_parse_nested(options, gact_policy, gact_attrs, | |
695 | ARRAY_SIZE(gact_policy))) { | |
696 | VLOG_ERR_RL(&error_rl, "failed to parse gact action options"); | |
697 | return EPROTO; | |
698 | } | |
699 | ||
700 | gact_parms = gact_attrs[TCA_GACT_PARMS]; | |
701 | p = nl_attr_get_unspec(gact_parms, sizeof *p); | |
702 | ||
703 | if (p->action != TC_ACT_SHOT) { | |
704 | VLOG_ERR_RL(&error_rl, "unknown gact action: %d", p->action); | |
705 | return EINVAL; | |
706 | } | |
707 | ||
708 | tm = nl_attr_get_unspec(gact_attrs[TCA_GACT_TM], sizeof *tm); | |
709 | nl_parse_tcf(tm, flower); | |
710 | ||
711 | return 0; | |
712 | } | |
713 | ||
714 | static const struct nl_policy mirred_policy[] = { | |
715 | [TCA_MIRRED_PARMS] = { .type = NL_A_UNSPEC, | |
716 | .min_len = sizeof(struct tc_mirred), | |
717 | .optional = false, }, | |
718 | [TCA_MIRRED_TM] = { .type = NL_A_UNSPEC, | |
719 | .min_len = sizeof(struct tcf_t), | |
720 | .optional = false, }, | |
721 | }; | |
722 | ||
723 | static int | |
724 | nl_parse_act_mirred(struct nlattr *options, struct tc_flower *flower) | |
725 | { | |
726 | ||
727 | struct nlattr *mirred_attrs[ARRAY_SIZE(mirred_policy)]; | |
728 | const struct tc_mirred *m; | |
729 | const struct nlattr *mirred_parms; | |
730 | const struct tcf_t *tm; | |
731 | struct nlattr *mirred_tm; | |
0c70132c | 732 | struct tc_action *action; |
f98e418f RD |
733 | |
734 | if (!nl_parse_nested(options, mirred_policy, mirred_attrs, | |
735 | ARRAY_SIZE(mirred_policy))) { | |
736 | VLOG_ERR_RL(&error_rl, "failed to parse mirred action options"); | |
737 | return EPROTO; | |
738 | } | |
739 | ||
740 | mirred_parms = mirred_attrs[TCA_MIRRED_PARMS]; | |
741 | m = nl_attr_get_unspec(mirred_parms, sizeof *m); | |
742 | ||
0c70132c | 743 | if (m->eaction != TCA_EGRESS_REDIR && m->eaction != TCA_EGRESS_MIRROR) { |
f98e418f | 744 | VLOG_ERR_RL(&error_rl, "unknown mirred action: %d, %d, %d", |
0c70132c | 745 | m->action, m->eaction, m->ifindex); |
f98e418f RD |
746 | return EINVAL; |
747 | } | |
748 | ||
0c70132c CM |
749 | action = &flower->actions[flower->action_count++]; |
750 | action->ifindex_out = m->ifindex; | |
751 | action->type = TC_ACT_OUTPUT; | |
f98e418f RD |
752 | |
753 | mirred_tm = mirred_attrs[TCA_MIRRED_TM]; | |
754 | tm = nl_attr_get_unspec(mirred_tm, sizeof *tm); | |
755 | nl_parse_tcf(tm, flower); | |
756 | ||
757 | return 0; | |
758 | } | |
759 | ||
760 | static const struct nl_policy vlan_policy[] = { | |
761 | [TCA_VLAN_PARMS] = { .type = NL_A_UNSPEC, | |
762 | .min_len = sizeof(struct tc_vlan), | |
763 | .optional = false, }, | |
764 | [TCA_VLAN_PUSH_VLAN_ID] = { .type = NL_A_U16, .optional = true, }, | |
765 | [TCA_VLAN_PUSH_VLAN_PROTOCOL] = { .type = NL_A_U16, .optional = true, }, | |
766 | [TCA_VLAN_PUSH_VLAN_PRIORITY] = { .type = NL_A_U8, .optional = true, }, | |
767 | }; | |
768 | ||
769 | static int | |
770 | nl_parse_act_vlan(struct nlattr *options, struct tc_flower *flower) | |
771 | { | |
772 | struct nlattr *vlan_attrs[ARRAY_SIZE(vlan_policy)]; | |
773 | const struct tc_vlan *v; | |
774 | const struct nlattr *vlan_parms; | |
0c70132c | 775 | struct tc_action *action; |
f98e418f RD |
776 | |
777 | if (!nl_parse_nested(options, vlan_policy, vlan_attrs, | |
778 | ARRAY_SIZE(vlan_policy))) { | |
779 | VLOG_ERR_RL(&error_rl, "failed to parse vlan action options"); | |
780 | return EPROTO; | |
781 | } | |
782 | ||
0c70132c | 783 | action = &flower->actions[flower->action_count++]; |
f98e418f RD |
784 | vlan_parms = vlan_attrs[TCA_VLAN_PARMS]; |
785 | v = nl_attr_get_unspec(vlan_parms, sizeof *v); | |
786 | if (v->v_action == TCA_VLAN_ACT_PUSH) { | |
61e8655c | 787 | struct nlattr *vlan_tpid = vlan_attrs[TCA_VLAN_PUSH_VLAN_PROTOCOL]; |
f98e418f RD |
788 | struct nlattr *vlan_id = vlan_attrs[TCA_VLAN_PUSH_VLAN_ID]; |
789 | struct nlattr *vlan_prio = vlan_attrs[TCA_VLAN_PUSH_VLAN_PRIORITY]; | |
790 | ||
61e8655c | 791 | action->vlan.vlan_push_tpid = nl_attr_get_u16(vlan_tpid); |
0c70132c CM |
792 | action->vlan.vlan_push_id = nl_attr_get_u16(vlan_id); |
793 | action->vlan.vlan_push_prio = vlan_prio ? nl_attr_get_u8(vlan_prio) : 0; | |
794 | action->type = TC_ACT_VLAN_PUSH; | |
f98e418f | 795 | } else if (v->v_action == TCA_VLAN_ACT_POP) { |
0c70132c | 796 | action->type = TC_ACT_VLAN_POP; |
f98e418f RD |
797 | } else { |
798 | VLOG_ERR_RL(&error_rl, "unknown vlan action: %d, %d", | |
799 | v->action, v->v_action); | |
800 | return EINVAL; | |
801 | } | |
802 | return 0; | |
803 | } | |
804 | ||
d6118e62 PB |
805 | static const struct nl_policy csum_policy[] = { |
806 | [TCA_CSUM_PARMS] = { .type = NL_A_UNSPEC, | |
807 | .min_len = sizeof(struct tc_csum), | |
808 | .optional = false, }, | |
809 | }; | |
810 | ||
811 | static int | |
812 | nl_parse_act_csum(struct nlattr *options, struct tc_flower *flower) | |
813 | { | |
814 | struct nlattr *csum_attrs[ARRAY_SIZE(csum_policy)]; | |
815 | const struct tc_csum *c; | |
816 | const struct nlattr *csum_parms; | |
817 | ||
818 | if (!nl_parse_nested(options, csum_policy, csum_attrs, | |
819 | ARRAY_SIZE(csum_policy))) { | |
820 | VLOG_ERR_RL(&error_rl, "failed to parse csum action options"); | |
821 | return EPROTO; | |
822 | } | |
823 | ||
824 | csum_parms = csum_attrs[TCA_CSUM_PARMS]; | |
825 | c = nl_attr_get_unspec(csum_parms, sizeof *c); | |
826 | ||
827 | /* sanity checks */ | |
828 | if (c->update_flags != flower->csum_update_flags) { | |
829 | VLOG_WARN_RL(&error_rl, | |
830 | "expected different act csum flags: 0x%x != 0x%x", | |
831 | flower->csum_update_flags, c->update_flags); | |
832 | return EINVAL; | |
833 | } | |
834 | flower->csum_update_flags = 0; /* so we know csum was handled */ | |
835 | ||
836 | if (flower->needs_full_ip_proto_mask | |
837 | && flower->mask.ip_proto != UINT8_MAX) { | |
838 | VLOG_WARN_RL(&error_rl, "expected full matching on flower ip_proto"); | |
839 | return EINVAL; | |
840 | } | |
841 | ||
842 | return 0; | |
843 | } | |
844 | ||
f98e418f RD |
845 | static const struct nl_policy act_policy[] = { |
846 | [TCA_ACT_KIND] = { .type = NL_A_STRING, .optional = false, }, | |
847 | [TCA_ACT_COOKIE] = { .type = NL_A_UNSPEC, .optional = true, }, | |
848 | [TCA_ACT_OPTIONS] = { .type = NL_A_NESTED, .optional = false, }, | |
849 | [TCA_ACT_STATS] = { .type = NL_A_NESTED, .optional = false, }, | |
850 | }; | |
851 | ||
852 | static const struct nl_policy stats_policy[] = { | |
853 | [TCA_STATS_BASIC] = { .type = NL_A_UNSPEC, | |
854 | .min_len = sizeof(struct gnet_stats_basic), | |
855 | .optional = false, }, | |
856 | }; | |
857 | ||
858 | static int | |
859 | nl_parse_single_action(struct nlattr *action, struct tc_flower *flower) | |
860 | { | |
861 | struct nlattr *act_options; | |
862 | struct nlattr *act_stats; | |
863 | struct nlattr *act_cookie; | |
864 | const char *act_kind; | |
865 | struct nlattr *action_attrs[ARRAY_SIZE(act_policy)]; | |
866 | struct nlattr *stats_attrs[ARRAY_SIZE(stats_policy)]; | |
867 | struct ovs_flow_stats *stats = &flower->stats; | |
868 | const struct gnet_stats_basic *bs; | |
40c5aa11 | 869 | int err = 0; |
f98e418f RD |
870 | |
871 | if (!nl_parse_nested(action, act_policy, action_attrs, | |
872 | ARRAY_SIZE(act_policy))) { | |
873 | VLOG_ERR_RL(&error_rl, "failed to parse single action options"); | |
874 | return EPROTO; | |
875 | } | |
876 | ||
877 | act_kind = nl_attr_get_string(action_attrs[TCA_ACT_KIND]); | |
878 | act_options = action_attrs[TCA_ACT_OPTIONS]; | |
879 | act_cookie = action_attrs[TCA_ACT_COOKIE]; | |
880 | ||
881 | if (!strcmp(act_kind, "gact")) { | |
40c5aa11 | 882 | err = nl_parse_act_drop(act_options, flower); |
f98e418f | 883 | } else if (!strcmp(act_kind, "mirred")) { |
40c5aa11 | 884 | err = nl_parse_act_mirred(act_options, flower); |
f98e418f | 885 | } else if (!strcmp(act_kind, "vlan")) { |
40c5aa11 | 886 | err = nl_parse_act_vlan(act_options, flower); |
f98e418f | 887 | } else if (!strcmp(act_kind, "tunnel_key")) { |
40c5aa11 | 888 | err = nl_parse_act_tunnel_key(act_options, flower); |
8ada482b | 889 | } else if (!strcmp(act_kind, "pedit")) { |
40c5aa11 | 890 | err = nl_parse_act_pedit(act_options, flower); |
8ada482b | 891 | } else if (!strcmp(act_kind, "csum")) { |
d6118e62 | 892 | nl_parse_act_csum(act_options, flower); |
f98e418f RD |
893 | } else { |
894 | VLOG_ERR_RL(&error_rl, "unknown tc action kind: %s", act_kind); | |
40c5aa11 RD |
895 | err = EINVAL; |
896 | } | |
897 | ||
898 | if (err) { | |
899 | return err; | |
f98e418f RD |
900 | } |
901 | ||
902 | if (act_cookie) { | |
903 | flower->act_cookie.data = nl_attr_get(act_cookie); | |
904 | flower->act_cookie.len = nl_attr_get_size(act_cookie); | |
905 | } | |
906 | ||
907 | act_stats = action_attrs[TCA_ACT_STATS]; | |
908 | ||
909 | if (!nl_parse_nested(act_stats, stats_policy, stats_attrs, | |
910 | ARRAY_SIZE(stats_policy))) { | |
911 | VLOG_ERR_RL(&error_rl, "failed to parse action stats policy"); | |
912 | return EPROTO; | |
913 | } | |
914 | ||
915 | bs = nl_attr_get_unspec(stats_attrs[TCA_STATS_BASIC], sizeof *bs); | |
916 | put_32aligned_u64(&stats->n_packets, bs->packets); | |
917 | put_32aligned_u64(&stats->n_bytes, bs->bytes); | |
918 | ||
919 | return 0; | |
920 | } | |
921 | ||
922 | #define TCA_ACT_MIN_PRIO 1 | |
923 | ||
924 | static int | |
925 | nl_parse_flower_actions(struct nlattr **attrs, struct tc_flower *flower) | |
926 | { | |
927 | const struct nlattr *actions = attrs[TCA_FLOWER_ACT]; | |
928 | static struct nl_policy actions_orders_policy[TCA_ACT_MAX_PRIO + 1] = {}; | |
929 | struct nlattr *actions_orders[ARRAY_SIZE(actions_orders_policy)]; | |
930 | const int max_size = ARRAY_SIZE(actions_orders_policy); | |
931 | ||
932 | for (int i = TCA_ACT_MIN_PRIO; i < max_size; i++) { | |
933 | actions_orders_policy[i].type = NL_A_NESTED; | |
934 | actions_orders_policy[i].optional = true; | |
935 | } | |
936 | ||
937 | if (!nl_parse_nested(actions, actions_orders_policy, actions_orders, | |
938 | ARRAY_SIZE(actions_orders_policy))) { | |
939 | VLOG_ERR_RL(&error_rl, "failed to parse flower order of actions"); | |
940 | return EPROTO; | |
941 | } | |
942 | ||
943 | for (int i = TCA_ACT_MIN_PRIO; i < max_size; i++) { | |
944 | if (actions_orders[i]) { | |
0c70132c CM |
945 | int err; |
946 | ||
947 | if (flower->action_count >= TCA_ACT_MAX_PRIO) { | |
948 | VLOG_DBG_RL(&error_rl, "Can only support %d actions", flower->action_count); | |
949 | return EOPNOTSUPP; | |
950 | } | |
951 | err = nl_parse_single_action(actions_orders[i], flower); | |
f98e418f RD |
952 | |
953 | if (err) { | |
954 | return err; | |
955 | } | |
956 | } | |
957 | } | |
958 | ||
d6118e62 PB |
959 | if (flower->csum_update_flags) { |
960 | VLOG_WARN_RL(&error_rl, | |
961 | "expected act csum with flags: 0x%x", | |
962 | flower->csum_update_flags); | |
963 | return EINVAL; | |
964 | } | |
965 | ||
f98e418f RD |
966 | return 0; |
967 | } | |
968 | ||
969 | static int | |
970 | nl_parse_flower_options(struct nlattr *nl_options, struct tc_flower *flower) | |
971 | { | |
972 | struct nlattr *attrs[ARRAY_SIZE(tca_flower_policy)]; | |
973 | ||
974 | if (!nl_parse_nested(nl_options, tca_flower_policy, | |
975 | attrs, ARRAY_SIZE(tca_flower_policy))) { | |
976 | VLOG_ERR_RL(&error_rl, "failed to parse flower classifier options"); | |
977 | return EPROTO; | |
978 | } | |
979 | ||
980 | nl_parse_flower_eth(attrs, flower); | |
981 | nl_parse_flower_vlan(attrs, flower); | |
982 | nl_parse_flower_ip(attrs, flower); | |
983 | nl_parse_flower_tunnel(attrs, flower); | |
d63ca532 | 984 | nl_parse_flower_flags(attrs, flower); |
f98e418f RD |
985 | return nl_parse_flower_actions(attrs, flower); |
986 | } | |
987 | ||
988 | int | |
989 | parse_netlink_to_tc_flower(struct ofpbuf *reply, struct tc_flower *flower) | |
990 | { | |
991 | struct tcmsg *tc; | |
992 | struct nlattr *ta[ARRAY_SIZE(tca_policy)]; | |
993 | const char *kind; | |
994 | ||
995 | if (NLMSG_HDRLEN + sizeof *tc > reply->size) { | |
996 | return EPROTO; | |
997 | } | |
998 | ||
999 | memset(flower, 0, sizeof *flower); | |
1000 | ||
1001 | tc = ofpbuf_at_assert(reply, NLMSG_HDRLEN, sizeof *tc); | |
1002 | flower->handle = tc->tcm_handle; | |
1003 | flower->key.eth_type = (OVS_FORCE ovs_be16) tc_get_minor(tc->tcm_info); | |
1004 | flower->mask.eth_type = OVS_BE16_MAX; | |
1005 | flower->prio = tc_get_major(tc->tcm_info); | |
1006 | ||
1007 | if (!flower->handle) { | |
1008 | return EAGAIN; | |
1009 | } | |
1010 | ||
1011 | if (!nl_policy_parse(reply, NLMSG_HDRLEN + sizeof *tc, | |
1012 | tca_policy, ta, ARRAY_SIZE(ta))) { | |
1013 | VLOG_ERR_RL(&error_rl, "failed to parse tca policy"); | |
1014 | return EPROTO; | |
1015 | } | |
1016 | ||
1017 | kind = nl_attr_get_string(ta[TCA_KIND]); | |
1018 | if (strcmp(kind, "flower")) { | |
763e120d | 1019 | VLOG_DBG_ONCE("Unsupported filter: %s", kind); |
f98e418f RD |
1020 | return EPROTO; |
1021 | } | |
1022 | ||
1023 | return nl_parse_flower_options(ta[TCA_OPTIONS], flower); | |
1024 | } | |
1025 | ||
1026 | int | |
093c9458 | 1027 | tc_dump_flower_start(int ifindex, struct nl_dump *dump, uint32_t block_id) |
f98e418f RD |
1028 | { |
1029 | struct ofpbuf request; | |
1030 | struct tcmsg *tcmsg; | |
093c9458 | 1031 | int index; |
f98e418f | 1032 | |
093c9458 JH |
1033 | index = block_id ? TCM_IFINDEX_MAGIC_BLOCK : ifindex; |
1034 | tcmsg = tc_make_request(index, RTM_GETTFILTER, NLM_F_DUMP, &request); | |
1035 | tcmsg->tcm_parent = block_id ? : TC_INGRESS_PARENT; | |
f98e418f RD |
1036 | tcmsg->tcm_info = TC_H_UNSPEC; |
1037 | tcmsg->tcm_handle = 0; | |
1038 | ||
1039 | nl_dump_start(dump, NETLINK_ROUTE, &request); | |
1040 | ofpbuf_uninit(&request); | |
1041 | ||
1042 | return 0; | |
1043 | } | |
1044 | ||
1045 | int | |
093c9458 | 1046 | tc_flush(int ifindex, uint32_t block_id) |
f98e418f RD |
1047 | { |
1048 | struct ofpbuf request; | |
1049 | struct tcmsg *tcmsg; | |
093c9458 | 1050 | int index; |
f98e418f | 1051 | |
093c9458 JH |
1052 | index = block_id ? TCM_IFINDEX_MAGIC_BLOCK : ifindex; |
1053 | tcmsg = tc_make_request(index, RTM_DELTFILTER, NLM_F_ACK, &request); | |
1054 | tcmsg->tcm_parent = block_id ? : TC_INGRESS_PARENT; | |
f98e418f RD |
1055 | tcmsg->tcm_info = TC_H_UNSPEC; |
1056 | ||
1057 | return tc_transact(&request, NULL); | |
1058 | } | |
1059 | ||
1060 | int | |
093c9458 | 1061 | tc_del_filter(int ifindex, int prio, int handle, uint32_t block_id) |
f98e418f RD |
1062 | { |
1063 | struct ofpbuf request; | |
1064 | struct tcmsg *tcmsg; | |
1065 | struct ofpbuf *reply; | |
1066 | int error; | |
093c9458 | 1067 | int index; |
f98e418f | 1068 | |
093c9458 JH |
1069 | index = block_id ? TCM_IFINDEX_MAGIC_BLOCK : ifindex; |
1070 | tcmsg = tc_make_request(index, RTM_DELTFILTER, NLM_F_ECHO, &request); | |
1071 | tcmsg->tcm_parent = block_id ? : TC_INGRESS_PARENT; | |
f98e418f RD |
1072 | tcmsg->tcm_info = tc_make_handle(prio, 0); |
1073 | tcmsg->tcm_handle = handle; | |
1074 | ||
1075 | error = tc_transact(&request, &reply); | |
1076 | if (!error) { | |
1077 | ofpbuf_delete(reply); | |
1078 | } | |
1079 | return error; | |
1080 | } | |
1081 | ||
1082 | int | |
093c9458 JH |
1083 | tc_get_flower(int ifindex, int prio, int handle, struct tc_flower *flower, |
1084 | uint32_t block_id) | |
f98e418f RD |
1085 | { |
1086 | struct ofpbuf request; | |
1087 | struct tcmsg *tcmsg; | |
1088 | struct ofpbuf *reply; | |
1089 | int error; | |
093c9458 | 1090 | int index; |
f98e418f | 1091 | |
093c9458 JH |
1092 | index = block_id ? TCM_IFINDEX_MAGIC_BLOCK : ifindex; |
1093 | tcmsg = tc_make_request(index, RTM_GETTFILTER, NLM_F_ECHO, &request); | |
1094 | tcmsg->tcm_parent = block_id ? : TC_INGRESS_PARENT; | |
f98e418f RD |
1095 | tcmsg->tcm_info = tc_make_handle(prio, 0); |
1096 | tcmsg->tcm_handle = handle; | |
1097 | ||
1098 | error = tc_transact(&request, &reply); | |
1099 | if (error) { | |
1100 | return error; | |
1101 | } | |
1102 | ||
1103 | error = parse_netlink_to_tc_flower(reply, flower); | |
1104 | ofpbuf_delete(reply); | |
1105 | return error; | |
1106 | } | |
1107 | ||
691d20cb PB |
1108 | static int |
1109 | tc_get_tc_cls_policy(enum tc_offload_policy policy) | |
1110 | { | |
1111 | if (policy == TC_POLICY_SKIP_HW) { | |
1112 | return TCA_CLS_FLAGS_SKIP_HW; | |
1113 | } else if (policy == TC_POLICY_SKIP_SW) { | |
1114 | return TCA_CLS_FLAGS_SKIP_SW; | |
1115 | } | |
1116 | ||
1117 | return 0; | |
1118 | } | |
1119 | ||
8ada482b PB |
1120 | static void |
1121 | nl_msg_put_act_csum(struct ofpbuf *request, uint32_t flags) | |
1122 | { | |
1123 | size_t offset; | |
1124 | ||
1125 | nl_msg_put_string(request, TCA_ACT_KIND, "csum"); | |
1126 | offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS); | |
1127 | { | |
1128 | struct tc_csum parm = { .action = TC_ACT_PIPE, | |
1129 | .update_flags = flags }; | |
1130 | ||
1131 | nl_msg_put_unspec(request, TCA_CSUM_PARMS, &parm, sizeof parm); | |
1132 | } | |
1133 | nl_msg_end_nested(request, offset); | |
1134 | } | |
1135 | ||
1136 | static void | |
1137 | nl_msg_put_act_pedit(struct ofpbuf *request, struct tc_pedit *parm, | |
1138 | struct tc_pedit_key_ex *ex) | |
1139 | { | |
e13bbbab | 1140 | size_t ksize = sizeof *parm + parm->nkeys * sizeof(struct tc_pedit_key); |
8ada482b PB |
1141 | size_t offset, offset_keys_ex, offset_key; |
1142 | int i; | |
1143 | ||
1144 | nl_msg_put_string(request, TCA_ACT_KIND, "pedit"); | |
1145 | offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS); | |
1146 | { | |
1147 | parm->action = TC_ACT_PIPE; | |
1148 | ||
1149 | nl_msg_put_unspec(request, TCA_PEDIT_PARMS_EX, parm, ksize); | |
1150 | offset_keys_ex = nl_msg_start_nested(request, TCA_PEDIT_KEYS_EX); | |
1151 | for (i = 0; i < parm->nkeys; i++, ex++) { | |
1152 | offset_key = nl_msg_start_nested(request, TCA_PEDIT_KEY_EX); | |
1153 | nl_msg_put_u16(request, TCA_PEDIT_KEY_EX_HTYPE, ex->htype); | |
1154 | nl_msg_put_u16(request, TCA_PEDIT_KEY_EX_CMD, ex->cmd); | |
1155 | nl_msg_end_nested(request, offset_key); | |
1156 | } | |
1157 | nl_msg_end_nested(request, offset_keys_ex); | |
1158 | } | |
1159 | nl_msg_end_nested(request, offset); | |
1160 | } | |
1161 | ||
f98e418f | 1162 | static void |
61e8655c JL |
1163 | nl_msg_put_act_push_vlan(struct ofpbuf *request, uint16_t tpid, |
1164 | uint16_t vid, uint8_t prio) | |
f98e418f RD |
1165 | { |
1166 | size_t offset; | |
1167 | ||
1168 | nl_msg_put_string(request, TCA_ACT_KIND, "vlan"); | |
1169 | offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS); | |
1170 | { | |
1171 | struct tc_vlan parm = { .action = TC_ACT_PIPE, | |
1172 | .v_action = TCA_VLAN_ACT_PUSH }; | |
1173 | ||
1174 | nl_msg_put_unspec(request, TCA_VLAN_PARMS, &parm, sizeof parm); | |
61e8655c | 1175 | nl_msg_put_u16(request, TCA_VLAN_PUSH_VLAN_PROTOCOL, tpid); |
f98e418f RD |
1176 | nl_msg_put_u16(request, TCA_VLAN_PUSH_VLAN_ID, vid); |
1177 | nl_msg_put_u8(request, TCA_VLAN_PUSH_VLAN_PRIORITY, prio); | |
1178 | } | |
1179 | nl_msg_end_nested(request, offset); | |
1180 | } | |
1181 | ||
1182 | static void | |
1183 | nl_msg_put_act_pop_vlan(struct ofpbuf *request) | |
1184 | { | |
1185 | size_t offset; | |
1186 | ||
1187 | nl_msg_put_string(request, TCA_ACT_KIND, "vlan"); | |
1188 | offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS); | |
1189 | { | |
1190 | struct tc_vlan parm = { .action = TC_ACT_PIPE, | |
1191 | .v_action = TCA_VLAN_ACT_POP }; | |
1192 | ||
1193 | nl_msg_put_unspec(request, TCA_VLAN_PARMS, &parm, sizeof parm); | |
1194 | } | |
1195 | nl_msg_end_nested(request, offset); | |
1196 | } | |
1197 | ||
1198 | static void | |
1199 | nl_msg_put_act_tunnel_key_release(struct ofpbuf *request) | |
1200 | { | |
1201 | size_t offset; | |
1202 | ||
1203 | nl_msg_put_string(request, TCA_ACT_KIND, "tunnel_key"); | |
1204 | offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS); | |
1205 | { | |
1206 | struct tc_tunnel_key tun = { .action = TC_ACT_PIPE, | |
1207 | .t_action = TCA_TUNNEL_KEY_ACT_RELEASE }; | |
1208 | ||
1209 | nl_msg_put_unspec(request, TCA_TUNNEL_KEY_PARMS, &tun, sizeof tun); | |
1210 | } | |
1211 | nl_msg_end_nested(request, offset); | |
1212 | } | |
1213 | ||
1214 | static void | |
1215 | nl_msg_put_act_tunnel_key_set(struct ofpbuf *request, ovs_be64 id, | |
1216 | ovs_be32 ipv4_src, ovs_be32 ipv4_dst, | |
1217 | struct in6_addr *ipv6_src, | |
1218 | struct in6_addr *ipv6_dst, | |
1219 | ovs_be16 tp_dst) | |
1220 | { | |
1221 | size_t offset; | |
1222 | ||
1223 | nl_msg_put_string(request, TCA_ACT_KIND, "tunnel_key"); | |
1224 | offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS); | |
1225 | { | |
1226 | struct tc_tunnel_key tun = { .action = TC_ACT_PIPE, | |
1227 | .t_action = TCA_TUNNEL_KEY_ACT_SET }; | |
1228 | ||
1229 | nl_msg_put_unspec(request, TCA_TUNNEL_KEY_PARMS, &tun, sizeof tun); | |
1230 | ||
1231 | ovs_be32 id32 = be64_to_be32(id); | |
1232 | nl_msg_put_be32(request, TCA_TUNNEL_KEY_ENC_KEY_ID, id32); | |
1233 | if (ipv4_dst) { | |
1234 | nl_msg_put_be32(request, TCA_TUNNEL_KEY_ENC_IPV4_SRC, ipv4_src); | |
1235 | nl_msg_put_be32(request, TCA_TUNNEL_KEY_ENC_IPV4_DST, ipv4_dst); | |
1236 | } else if (!is_all_zeros(ipv6_dst, sizeof *ipv6_dst)) { | |
1237 | nl_msg_put_in6_addr(request, TCA_TUNNEL_KEY_ENC_IPV6_DST, | |
1238 | ipv6_dst); | |
1239 | nl_msg_put_in6_addr(request, TCA_TUNNEL_KEY_ENC_IPV6_SRC, | |
1240 | ipv6_src); | |
1241 | } | |
1242 | nl_msg_put_be16(request, TCA_TUNNEL_KEY_ENC_DST_PORT, tp_dst); | |
1243 | } | |
1244 | nl_msg_end_nested(request, offset); | |
1245 | } | |
1246 | ||
1247 | static void | |
1248 | nl_msg_put_act_drop(struct ofpbuf *request) | |
1249 | { | |
1250 | size_t offset; | |
1251 | ||
1252 | nl_msg_put_string(request, TCA_ACT_KIND, "gact"); | |
1253 | offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS); | |
1254 | { | |
1255 | struct tc_gact p = { .action = TC_ACT_SHOT }; | |
1256 | ||
1257 | nl_msg_put_unspec(request, TCA_GACT_PARMS, &p, sizeof p); | |
1258 | } | |
1259 | nl_msg_end_nested(request, offset); | |
1260 | } | |
1261 | ||
1262 | static void | |
00a0a011 CM |
1263 | nl_msg_put_act_mirred(struct ofpbuf *request, int ifindex, int action, |
1264 | int eaction) | |
f98e418f RD |
1265 | { |
1266 | size_t offset; | |
1267 | ||
1268 | nl_msg_put_string(request, TCA_ACT_KIND, "mirred"); | |
1269 | offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS); | |
1270 | { | |
00a0a011 CM |
1271 | struct tc_mirred m = { .action = action, |
1272 | .eaction = eaction, | |
f98e418f RD |
1273 | .ifindex = ifindex }; |
1274 | ||
1275 | nl_msg_put_unspec(request, TCA_MIRRED_PARMS, &m, sizeof m); | |
1276 | } | |
1277 | nl_msg_end_nested(request, offset); | |
1278 | } | |
1279 | ||
1280 | static inline void | |
1281 | nl_msg_put_act_cookie(struct ofpbuf *request, struct tc_cookie *ck) { | |
1282 | if (ck->len) { | |
1283 | nl_msg_put_unspec(request, TCA_ACT_COOKIE, ck->data, ck->len); | |
1284 | } | |
1285 | } | |
1286 | ||
8ada482b PB |
1287 | /* Given flower, a key_to_pedit map entry, calculates the rest, |
1288 | * where: | |
1289 | * | |
1290 | * mask, data - pointers of where read the first word of flower->key/mask. | |
1291 | * current_offset - which offset to use for the first pedit action. | |
1292 | * cnt - max pedits actions to use. | |
1293 | * first_word_mask/last_word_mask - the mask to use for the first/last read | |
1294 | * (as we read entire words). */ | |
f98e418f | 1295 | static void |
8ada482b PB |
1296 | calc_offsets(struct tc_flower *flower, struct flower_key_to_pedit *m, |
1297 | int *cur_offset, int *cnt, uint32_t *last_word_mask, | |
1298 | uint32_t *first_word_mask, uint32_t **mask, uint32_t **data) | |
1299 | { | |
1300 | int start_offset, max_offset, total_size; | |
1301 | int diff, right_zero_bits, left_zero_bits; | |
1302 | char *rewrite_key = (void *) &flower->rewrite.key; | |
1303 | char *rewrite_mask = (void *) &flower->rewrite.mask; | |
1304 | ||
1305 | max_offset = m->offset + m->size; | |
1306 | start_offset = ROUND_DOWN(m->offset, 4); | |
1307 | diff = m->offset - start_offset; | |
1308 | total_size = max_offset - start_offset; | |
1309 | right_zero_bits = 8 * (4 - (max_offset % 4)); | |
1310 | left_zero_bits = 8 * (m->offset - start_offset); | |
1311 | ||
1312 | *cur_offset = start_offset; | |
1313 | *cnt = (total_size / 4) + (total_size % 4 ? 1 : 0); | |
1314 | *last_word_mask = UINT32_MAX >> right_zero_bits; | |
1315 | *first_word_mask = UINT32_MAX << left_zero_bits; | |
1316 | *data = (void *) (rewrite_key + m->flower_offset - diff); | |
1317 | *mask = (void *) (rewrite_mask + m->flower_offset - diff); | |
1318 | } | |
1319 | ||
d6118e62 | 1320 | static inline int |
8ada482b PB |
1321 | csum_update_flag(struct tc_flower *flower, |
1322 | enum pedit_header_type htype) { | |
d6118e62 PB |
1323 | /* Explictily specifiy the csum flags so HW can return EOPNOTSUPP |
1324 | * if it doesn't support a checksum recalculation of some headers. | |
1325 | * And since OVS allows a flow such as | |
1326 | * eth(dst=<mac>),eth_type(0x0800) actions=set(ipv4(src=<new_ip>)) | |
1327 | * we need to force a more specific flow as this can, for example, | |
1328 | * need a recalculation of icmp checksum if the packet that passes | |
d5ac6458 | 1329 | * is ICMPv6 and tcp checksum if its tcp. */ |
d6118e62 PB |
1330 | |
1331 | switch (htype) { | |
1332 | case TCA_PEDIT_KEY_EX_HDR_TYPE_IP4: | |
8ada482b | 1333 | flower->csum_update_flags |= TCA_CSUM_UPDATE_FLAG_IPV4HDR; |
eeb0ca88 | 1334 | /* Fall through. */ |
d6118e62 PB |
1335 | case TCA_PEDIT_KEY_EX_HDR_TYPE_IP6: |
1336 | case TCA_PEDIT_KEY_EX_HDR_TYPE_TCP: | |
1337 | case TCA_PEDIT_KEY_EX_HDR_TYPE_UDP: | |
8ada482b | 1338 | if (flower->key.ip_proto == IPPROTO_TCP) { |
d6118e62 | 1339 | flower->needs_full_ip_proto_mask = true; |
8ada482b PB |
1340 | flower->csum_update_flags |= TCA_CSUM_UPDATE_FLAG_TCP; |
1341 | } else if (flower->key.ip_proto == IPPROTO_UDP) { | |
d6118e62 | 1342 | flower->needs_full_ip_proto_mask = true; |
8ada482b | 1343 | flower->csum_update_flags |= TCA_CSUM_UPDATE_FLAG_UDP; |
d5ac6458 JL |
1344 | } else if (flower->key.ip_proto == IPPROTO_ICMP) { |
1345 | flower->needs_full_ip_proto_mask = true; | |
1346 | } else if (flower->key.ip_proto == IPPROTO_ICMPV6) { | |
d6118e62 | 1347 | flower->needs_full_ip_proto_mask = true; |
8ada482b | 1348 | flower->csum_update_flags |= TCA_CSUM_UPDATE_FLAG_ICMP; |
d6118e62 PB |
1349 | } else { |
1350 | VLOG_WARN_RL(&error_rl, | |
1351 | "can't offload rewrite of IP/IPV6 with ip_proto: %d", | |
1352 | flower->key.ip_proto); | |
1353 | break; | |
8ada482b | 1354 | } |
eeb0ca88 | 1355 | /* Fall through. */ |
d6118e62 PB |
1356 | case TCA_PEDIT_KEY_EX_HDR_TYPE_ETH: |
1357 | return 0; /* success */ | |
1358 | ||
1359 | case TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK: | |
1360 | case __PEDIT_HDR_TYPE_MAX: | |
1361 | default: | |
1362 | break; | |
8ada482b | 1363 | } |
d6118e62 PB |
1364 | |
1365 | return EOPNOTSUPP; | |
8ada482b PB |
1366 | } |
1367 | ||
1368 | static int | |
1369 | nl_msg_put_flower_rewrite_pedits(struct ofpbuf *request, | |
1370 | struct tc_flower *flower) | |
1371 | { | |
1372 | struct { | |
1373 | struct tc_pedit sel; | |
1374 | struct tc_pedit_key keys[MAX_PEDIT_OFFSETS]; | |
1375 | struct tc_pedit_key_ex keys_ex[MAX_PEDIT_OFFSETS]; | |
1376 | } sel = { | |
1377 | .sel = { | |
1378 | .nkeys = 0 | |
1379 | } | |
1380 | }; | |
d6118e62 | 1381 | int i, j, err; |
8ada482b PB |
1382 | |
1383 | for (i = 0; i < ARRAY_SIZE(flower_pedit_map); i++) { | |
1384 | struct flower_key_to_pedit *m = &flower_pedit_map[i]; | |
1385 | struct tc_pedit_key *pedit_key = NULL; | |
1386 | struct tc_pedit_key_ex *pedit_key_ex = NULL; | |
1387 | uint32_t *mask, *data, first_word_mask, last_word_mask; | |
1388 | int cnt = 0, cur_offset = 0; | |
1389 | ||
1390 | if (!m->size) { | |
1391 | continue; | |
1392 | } | |
1393 | ||
1394 | calc_offsets(flower, m, &cur_offset, &cnt, &last_word_mask, | |
1395 | &first_word_mask, &mask, &data); | |
1396 | ||
1397 | for (j = 0; j < cnt; j++, mask++, data++, cur_offset += 4) { | |
1398 | uint32_t mask_word = *mask; | |
1399 | ||
1400 | if (j == 0) { | |
1401 | mask_word &= first_word_mask; | |
1402 | } | |
1403 | if (j == cnt - 1) { | |
1404 | mask_word &= last_word_mask; | |
1405 | } | |
1406 | if (!mask_word) { | |
1407 | continue; | |
1408 | } | |
1409 | if (sel.sel.nkeys == MAX_PEDIT_OFFSETS) { | |
1410 | VLOG_WARN_RL(&error_rl, "reached too many pedit offsets: %d", | |
1411 | MAX_PEDIT_OFFSETS); | |
1412 | return EOPNOTSUPP; | |
1413 | } | |
1414 | ||
1415 | pedit_key = &sel.keys[sel.sel.nkeys]; | |
1416 | pedit_key_ex = &sel.keys_ex[sel.sel.nkeys]; | |
1417 | pedit_key_ex->cmd = TCA_PEDIT_KEY_EX_CMD_SET; | |
1418 | pedit_key_ex->htype = m->htype; | |
1419 | pedit_key->off = cur_offset; | |
1420 | pedit_key->mask = ~mask_word; | |
1421 | pedit_key->val = *data & mask_word; | |
1422 | sel.sel.nkeys++; | |
d6118e62 PB |
1423 | |
1424 | err = csum_update_flag(flower, m->htype); | |
1425 | if (err) { | |
1426 | return err; | |
1427 | } | |
1428 | ||
1429 | if (flower->needs_full_ip_proto_mask) { | |
1430 | flower->mask.ip_proto = UINT8_MAX; | |
1431 | } | |
8ada482b PB |
1432 | } |
1433 | } | |
1434 | nl_msg_put_act_pedit(request, &sel.sel, sel.keys_ex); | |
1435 | ||
1436 | return 0; | |
1437 | } | |
1438 | ||
1439 | static int | |
f98e418f RD |
1440 | nl_msg_put_flower_acts(struct ofpbuf *request, struct tc_flower *flower) |
1441 | { | |
1442 | size_t offset; | |
1443 | size_t act_offset; | |
0c70132c CM |
1444 | uint16_t act_index = 1; |
1445 | struct tc_action *action; | |
1446 | int i, ifindex = 0; | |
f98e418f RD |
1447 | |
1448 | offset = nl_msg_start_nested(request, TCA_FLOWER_ACT); | |
1449 | { | |
8ada482b PB |
1450 | int error; |
1451 | ||
0c70132c | 1452 | if (flower->tunnel.tunnel) { |
8ada482b | 1453 | act_offset = nl_msg_start_nested(request, act_index++); |
0c70132c | 1454 | nl_msg_put_act_tunnel_key_release(request); |
8ada482b | 1455 | nl_msg_end_nested(request, act_offset); |
0c70132c | 1456 | } |
f98e418f | 1457 | |
0c70132c CM |
1458 | action = flower->actions; |
1459 | for (i = 0; i < flower->action_count; i++, action++) { | |
1460 | switch (action->type) { | |
1461 | case TC_ACT_PEDIT: { | |
a7ce5b85 | 1462 | act_offset = nl_msg_start_nested(request, act_index++); |
0c70132c CM |
1463 | error = nl_msg_put_flower_rewrite_pedits(request, flower); |
1464 | if (error) { | |
1465 | return error; | |
1466 | } | |
a7ce5b85 | 1467 | nl_msg_end_nested(request, act_offset); |
0c70132c CM |
1468 | |
1469 | if (flower->csum_update_flags) { | |
1470 | act_offset = nl_msg_start_nested(request, act_index++); | |
1471 | nl_msg_put_act_csum(request, flower->csum_update_flags); | |
1472 | nl_msg_end_nested(request, act_offset); | |
1473 | } | |
1474 | } | |
1475 | break; | |
1476 | case TC_ACT_ENCAP: { | |
1477 | act_offset = nl_msg_start_nested(request, act_index++); | |
1478 | nl_msg_put_act_tunnel_key_set(request, action->encap.id, | |
1479 | action->encap.ipv4.ipv4_src, | |
1480 | action->encap.ipv4.ipv4_dst, | |
1481 | &action->encap.ipv6.ipv6_src, | |
1482 | &action->encap.ipv6.ipv6_dst, | |
1483 | action->encap.tp_dst); | |
1484 | nl_msg_end_nested(request, act_offset); | |
1485 | } | |
1486 | break; | |
1487 | case TC_ACT_VLAN_POP: { | |
1488 | act_offset = nl_msg_start_nested(request, act_index++); | |
1489 | nl_msg_put_act_pop_vlan(request); | |
1490 | nl_msg_end_nested(request, act_offset); | |
1491 | } | |
1492 | break; | |
1493 | case TC_ACT_VLAN_PUSH: { | |
1494 | act_offset = nl_msg_start_nested(request, act_index++); | |
1495 | nl_msg_put_act_push_vlan(request, | |
61e8655c | 1496 | action->vlan.vlan_push_tpid, |
0c70132c CM |
1497 | action->vlan.vlan_push_id, |
1498 | action->vlan.vlan_push_prio); | |
1499 | nl_msg_end_nested(request, act_offset); | |
1500 | } | |
1501 | break; | |
1502 | case TC_ACT_OUTPUT: { | |
1503 | ifindex = action->ifindex_out; | |
1504 | if (ifindex < 1) { | |
1505 | VLOG_ERR_RL(&error_rl, "%s: invalid ifindex: %d, type: %d", | |
1506 | __func__, ifindex, action->type); | |
1507 | return EINVAL; | |
1508 | } | |
1509 | act_offset = nl_msg_start_nested(request, act_index++); | |
00a0a011 CM |
1510 | if (i == flower->action_count - 1) { |
1511 | nl_msg_put_act_mirred(request, ifindex, TC_ACT_STOLEN, | |
1512 | TCA_EGRESS_REDIR); | |
1513 | } else { | |
1514 | nl_msg_put_act_mirred(request, ifindex, TC_ACT_PIPE, | |
1515 | TCA_EGRESS_MIRROR); | |
1516 | } | |
0c70132c CM |
1517 | nl_msg_put_act_cookie(request, &flower->act_cookie); |
1518 | nl_msg_end_nested(request, act_offset); | |
1519 | } | |
1520 | break; | |
a7ce5b85 | 1521 | } |
8ada482b | 1522 | } |
0c70132c CM |
1523 | } |
1524 | if (!ifindex) { | |
1525 | act_offset = nl_msg_start_nested(request, act_index++); | |
1526 | nl_msg_put_act_drop(request); | |
1527 | nl_msg_put_act_cookie(request, &flower->act_cookie); | |
1528 | nl_msg_end_nested(request, act_offset); | |
f98e418f RD |
1529 | } |
1530 | nl_msg_end_nested(request, offset); | |
8ada482b PB |
1531 | |
1532 | return 0; | |
f98e418f RD |
1533 | } |
1534 | ||
1535 | static void | |
1536 | nl_msg_put_masked_value(struct ofpbuf *request, uint16_t type, | |
1537 | uint16_t mask_type, const void *data, | |
1538 | const void *mask_data, size_t len) | |
1539 | { | |
1540 | if (mask_type != TCA_FLOWER_UNSPEC) { | |
1541 | if (is_all_zeros(mask_data, len)) { | |
1542 | return; | |
1543 | } | |
1544 | nl_msg_put_unspec(request, mask_type, mask_data, len); | |
1545 | } | |
1546 | nl_msg_put_unspec(request, type, data, len); | |
1547 | } | |
1548 | ||
1549 | static void | |
1550 | nl_msg_put_flower_tunnel(struct ofpbuf *request, struct tc_flower *flower) | |
1551 | { | |
1552 | ovs_be32 ipv4_src = flower->tunnel.ipv4.ipv4_src; | |
1553 | ovs_be32 ipv4_dst = flower->tunnel.ipv4.ipv4_dst; | |
1554 | struct in6_addr *ipv6_src = &flower->tunnel.ipv6.ipv6_src; | |
1555 | struct in6_addr *ipv6_dst = &flower->tunnel.ipv6.ipv6_dst; | |
1556 | ovs_be16 tp_dst = flower->tunnel.tp_dst; | |
1557 | ovs_be32 id = be64_to_be32(flower->tunnel.id); | |
1558 | ||
1559 | nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_KEY_ID, id); | |
1560 | if (ipv4_dst) { | |
1561 | nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_IPV4_SRC, ipv4_src); | |
1562 | nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_IPV4_DST, ipv4_dst); | |
1563 | } else if (!is_all_zeros(ipv6_dst, sizeof *ipv6_dst)) { | |
1564 | nl_msg_put_in6_addr(request, TCA_FLOWER_KEY_ENC_IPV6_SRC, ipv6_src); | |
1565 | nl_msg_put_in6_addr(request, TCA_FLOWER_KEY_ENC_IPV6_DST, ipv6_dst); | |
1566 | } | |
1567 | nl_msg_put_be16(request, TCA_FLOWER_KEY_ENC_UDP_DST_PORT, tp_dst); | |
1568 | } | |
1569 | ||
bb170644 PB |
1570 | #define FLOWER_PUT_MASKED_VALUE(member, type) \ |
1571 | nl_msg_put_masked_value(request, type, type##_MASK, &flower->key.member, \ | |
1572 | &flower->mask.member, sizeof flower->key.member) | |
1573 | ||
8ada482b | 1574 | static int |
f98e418f RD |
1575 | nl_msg_put_flower_options(struct ofpbuf *request, struct tc_flower *flower) |
1576 | { | |
8ada482b | 1577 | |
f98e418f | 1578 | uint16_t host_eth_type = ntohs(flower->key.eth_type); |
b5ad40a9 | 1579 | bool is_vlan = eth_type_vlan(flower->key.eth_type); |
8ada482b PB |
1580 | int err; |
1581 | ||
d6118e62 PB |
1582 | /* need to parse acts first as some acts require changing the matching |
1583 | * see csum_update_flag() */ | |
8ada482b PB |
1584 | err = nl_msg_put_flower_acts(request, flower); |
1585 | if (err) { | |
1586 | return err; | |
1587 | } | |
f98e418f RD |
1588 | |
1589 | if (is_vlan) { | |
1590 | host_eth_type = ntohs(flower->key.encap_eth_type); | |
1591 | } | |
1592 | ||
bb170644 PB |
1593 | FLOWER_PUT_MASKED_VALUE(dst_mac, TCA_FLOWER_KEY_ETH_DST); |
1594 | FLOWER_PUT_MASKED_VALUE(src_mac, TCA_FLOWER_KEY_ETH_SRC); | |
f98e418f RD |
1595 | |
1596 | if (host_eth_type == ETH_P_IP || host_eth_type == ETH_P_IPV6) { | |
1597 | if (flower->mask.ip_proto && flower->key.ip_proto) { | |
1598 | nl_msg_put_u8(request, TCA_FLOWER_KEY_IP_PROTO, | |
1599 | flower->key.ip_proto); | |
1600 | } | |
1601 | ||
83e86606 | 1602 | if (flower->mask.flags) { |
7e0f69b5 | 1603 | nl_msg_put_be32(request, TCA_FLOWER_KEY_FLAGS, |
83e86606 | 1604 | htonl(flower->key.flags)); |
7e0f69b5 | 1605 | nl_msg_put_be32(request, TCA_FLOWER_KEY_FLAGS_MASK, |
83e86606 RD |
1606 | htonl(flower->mask.flags)); |
1607 | } | |
1608 | ||
f98e418f | 1609 | if (flower->key.ip_proto == IPPROTO_UDP) { |
2b1d9fa9 PB |
1610 | FLOWER_PUT_MASKED_VALUE(udp_src, TCA_FLOWER_KEY_UDP_SRC); |
1611 | FLOWER_PUT_MASKED_VALUE(udp_dst, TCA_FLOWER_KEY_UDP_DST); | |
f98e418f | 1612 | } else if (flower->key.ip_proto == IPPROTO_TCP) { |
2b1d9fa9 PB |
1613 | FLOWER_PUT_MASKED_VALUE(tcp_src, TCA_FLOWER_KEY_TCP_SRC); |
1614 | FLOWER_PUT_MASKED_VALUE(tcp_dst, TCA_FLOWER_KEY_TCP_DST); | |
cd081043 | 1615 | FLOWER_PUT_MASKED_VALUE(tcp_flags, TCA_FLOWER_KEY_TCP_FLAGS); |
4862b4e5 | 1616 | } else if (flower->key.ip_proto == IPPROTO_SCTP) { |
2b1d9fa9 PB |
1617 | FLOWER_PUT_MASKED_VALUE(sctp_src, TCA_FLOWER_KEY_SCTP_SRC); |
1618 | FLOWER_PUT_MASKED_VALUE(sctp_dst, TCA_FLOWER_KEY_SCTP_DST); | |
f98e418f RD |
1619 | } |
1620 | } | |
1621 | ||
1622 | if (host_eth_type == ETH_P_IP) { | |
bb170644 PB |
1623 | FLOWER_PUT_MASKED_VALUE(ipv4.ipv4_src, TCA_FLOWER_KEY_IPV4_SRC); |
1624 | FLOWER_PUT_MASKED_VALUE(ipv4.ipv4_dst, TCA_FLOWER_KEY_IPV4_DST); | |
0b4b5203 | 1625 | FLOWER_PUT_MASKED_VALUE(ip_ttl, TCA_FLOWER_KEY_IP_TTL); |
f98e418f | 1626 | } else if (host_eth_type == ETH_P_IPV6) { |
bb170644 PB |
1627 | FLOWER_PUT_MASKED_VALUE(ipv6.ipv6_src, TCA_FLOWER_KEY_IPV6_SRC); |
1628 | FLOWER_PUT_MASKED_VALUE(ipv6.ipv6_dst, TCA_FLOWER_KEY_IPV6_DST); | |
f98e418f RD |
1629 | } |
1630 | ||
1631 | nl_msg_put_be16(request, TCA_FLOWER_KEY_ETH_TYPE, flower->key.eth_type); | |
1632 | ||
1633 | if (is_vlan) { | |
1634 | if (flower->key.vlan_id || flower->key.vlan_prio) { | |
1635 | nl_msg_put_u16(request, TCA_FLOWER_KEY_VLAN_ID, | |
1636 | flower->key.vlan_id); | |
1637 | nl_msg_put_u8(request, TCA_FLOWER_KEY_VLAN_PRIO, | |
1638 | flower->key.vlan_prio); | |
1639 | } | |
1640 | if (flower->key.encap_eth_type) { | |
1641 | nl_msg_put_be16(request, TCA_FLOWER_KEY_VLAN_ETH_TYPE, | |
1642 | flower->key.encap_eth_type); | |
1643 | } | |
1644 | } | |
1645 | ||
691d20cb | 1646 | nl_msg_put_u32(request, TCA_FLOWER_FLAGS, tc_get_tc_cls_policy(tc_policy)); |
f98e418f RD |
1647 | |
1648 | if (flower->tunnel.tunnel) { | |
1649 | nl_msg_put_flower_tunnel(request, flower); | |
1650 | } | |
1651 | ||
8ada482b | 1652 | return 0; |
f98e418f RD |
1653 | } |
1654 | ||
1655 | int | |
1656 | tc_replace_flower(int ifindex, uint16_t prio, uint32_t handle, | |
093c9458 | 1657 | struct tc_flower *flower, uint32_t block_id) |
f98e418f RD |
1658 | { |
1659 | struct ofpbuf request; | |
1660 | struct tcmsg *tcmsg; | |
1661 | struct ofpbuf *reply; | |
1662 | int error = 0; | |
1663 | size_t basic_offset; | |
1664 | uint16_t eth_type = (OVS_FORCE uint16_t) flower->key.eth_type; | |
093c9458 | 1665 | int index; |
f98e418f | 1666 | |
093c9458 JH |
1667 | index = block_id ? TCM_IFINDEX_MAGIC_BLOCK : ifindex; |
1668 | tcmsg = tc_make_request(index, RTM_NEWTFILTER, NLM_F_CREATE | NLM_F_ECHO, | |
1669 | &request); | |
1670 | tcmsg->tcm_parent = block_id ? : TC_INGRESS_PARENT; | |
f98e418f RD |
1671 | tcmsg->tcm_info = tc_make_handle(prio, eth_type); |
1672 | tcmsg->tcm_handle = handle; | |
1673 | ||
1674 | nl_msg_put_string(&request, TCA_KIND, "flower"); | |
1675 | basic_offset = nl_msg_start_nested(&request, TCA_OPTIONS); | |
1676 | { | |
8ada482b PB |
1677 | error = nl_msg_put_flower_options(&request, flower); |
1678 | ||
1679 | if (error) { | |
1680 | ofpbuf_uninit(&request); | |
1681 | return error; | |
1682 | } | |
f98e418f RD |
1683 | } |
1684 | nl_msg_end_nested(&request, basic_offset); | |
1685 | ||
1686 | error = tc_transact(&request, &reply); | |
1687 | if (!error) { | |
1688 | struct tcmsg *tc = | |
1689 | ofpbuf_at_assert(reply, NLMSG_HDRLEN, sizeof *tc); | |
1690 | ||
1691 | flower->prio = tc_get_major(tc->tcm_info); | |
1692 | flower->handle = tc->tcm_handle; | |
1693 | ofpbuf_delete(reply); | |
1694 | } | |
1695 | ||
1696 | return error; | |
1697 | } | |
691d20cb PB |
1698 | |
1699 | void | |
1700 | tc_set_policy(const char *policy) | |
1701 | { | |
1702 | if (!policy) { | |
1703 | return; | |
1704 | } | |
1705 | ||
1706 | if (!strcmp(policy, "skip_sw")) { | |
1707 | tc_policy = TC_POLICY_SKIP_SW; | |
1708 | } else if (!strcmp(policy, "skip_hw")) { | |
1709 | tc_policy = TC_POLICY_SKIP_HW; | |
1710 | } else if (!strcmp(policy, "none")) { | |
1711 | tc_policy = TC_POLICY_NONE; | |
1712 | } else { | |
1713 | VLOG_WARN("tc: Invalid policy '%s'", policy); | |
1714 | return; | |
1715 | } | |
1716 | ||
1717 | VLOG_INFO("tc: Using policy '%s'", policy); | |
1718 | } |