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Commit | Line | Data |
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064af421 | 1 | /* |
b2342f7a | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 Nicira, Inc. |
064af421 | 3 | * |
a14bc59f BP |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
064af421 | 7 | * |
a14bc59f BP |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
064af421 | 15 | */ |
b9e8b45a | 16 | |
064af421 BP |
17 | #ifndef PACKETS_H |
18 | #define PACKETS_H 1 | |
19 | ||
ab9c78ff | 20 | #include <inttypes.h> |
26233bb4 | 21 | #include <sys/types.h> |
064af421 BP |
22 | #include <stdint.h> |
23 | #include <string.h> | |
24 | #include "compiler.h" | |
b211014d | 25 | #include "openvswitch/geneve.h" |
b2bd6da6 | 26 | #include "openvswitch/packets.h" |
0596e897 | 27 | #include "openvswitch/types.h" |
3d2fbd70 | 28 | #include "openvswitch/nsh.h" |
07659514 | 29 | #include "odp-netlink.h" |
064af421 | 30 | #include "random.h" |
7e36ac42 | 31 | #include "hash.h" |
9558d2a5 | 32 | #include "tun-metadata.h" |
754c1feb | 33 | #include "unaligned.h" |
064af421 | 34 | #include "util.h" |
7dc18ae9 | 35 | #include "timeval.h" |
064af421 | 36 | |
cf62fa4c | 37 | struct dp_packet; |
d31f1109 | 38 | struct ds; |
b9e8b45a | 39 | |
59781952 JR |
40 | /* Purely internal to OVS userspace. These flags should never be exposed to |
41 | * the outside world and so aren't included in the flags mask. */ | |
42 | ||
43 | /* Tunnel information is in userspace datapath format. */ | |
44 | #define FLOW_TNL_F_UDPIF (1 << 4) | |
45 | ||
ffe4c74f JB |
46 | static inline bool ipv6_addr_is_set(const struct in6_addr *addr); |
47 | ||
48 | static inline bool | |
49 | flow_tnl_dst_is_set(const struct flow_tnl *tnl) | |
50 | { | |
51 | return tnl->ip_dst || ipv6_addr_is_set(&tnl->ipv6_dst); | |
52 | } | |
53 | ||
54 | struct in6_addr flow_tnl_dst(const struct flow_tnl *tnl); | |
55 | struct in6_addr flow_tnl_src(const struct flow_tnl *tnl); | |
56 | ||
59781952 JR |
57 | /* Returns an offset to 'src' covering all the meaningful fields in 'src'. */ |
58 | static inline size_t | |
59 | flow_tnl_size(const struct flow_tnl *src) | |
60 | { | |
ffe4c74f JB |
61 | if (!flow_tnl_dst_is_set(src)) { |
62 | /* Covers ip_dst and ipv6_dst only. */ | |
59781952 JR |
63 | return offsetof(struct flow_tnl, ip_src); |
64 | } | |
65 | if (src->flags & FLOW_TNL_F_UDPIF) { | |
66 | /* Datapath format, cover all options we have. */ | |
67 | return offsetof(struct flow_tnl, metadata.opts) | |
68 | + src->metadata.present.len; | |
69 | } | |
70 | if (!src->metadata.present.map) { | |
71 | /* No TLVs, opts is irrelevant. */ | |
72 | return offsetof(struct flow_tnl, metadata.opts); | |
73 | } | |
74 | /* Have decoded TLVs, opts is relevant. */ | |
75 | return sizeof *src; | |
76 | } | |
77 | ||
78 | /* Copy flow_tnl, but avoid copying unused portions of tun_metadata. Unused | |
79 | * data in 'dst' is NOT cleared, so this must not be used in cases where the | |
80 | * uninitialized portion may be hashed over. */ | |
81 | static inline void | |
82 | flow_tnl_copy__(struct flow_tnl *dst, const struct flow_tnl *src) | |
83 | { | |
84 | memcpy(dst, src, flow_tnl_size(src)); | |
85 | } | |
86 | ||
87 | static inline bool | |
88 | flow_tnl_equal(const struct flow_tnl *a, const struct flow_tnl *b) | |
89 | { | |
90 | size_t a_size = flow_tnl_size(a); | |
91 | ||
92 | return a_size == flow_tnl_size(b) && !memcmp(a, b, a_size); | |
93 | } | |
94 | ||
758c456d JR |
95 | /* Datapath packet metadata */ |
96 | struct pkt_metadata { | |
99fc16c0 | 97 | PADDED_MEMBERS_CACHELINE_MARKER(CACHE_LINE_SIZE, cacheline0, |
572f732a AZ |
98 | uint32_t recirc_id; /* Recirculation id carried with the |
99 | recirculating packets. 0 for packets | |
100 | received from the wire. */ | |
101 | uint32_t dp_hash; /* hash value computed by the recirculation | |
102 | action. */ | |
758c456d JR |
103 | uint32_t skb_priority; /* Packet priority for QoS. */ |
104 | uint32_t pkt_mark; /* Packet mark. */ | |
2a28ccc8 | 105 | uint8_t ct_state; /* Connection state. */ |
daf4d3c1 | 106 | bool ct_orig_tuple_ipv6; |
07659514 | 107 | uint16_t ct_zone; /* Connection zone. */ |
8e53fe8c | 108 | uint32_t ct_mark; /* Connection mark. */ |
9daf2348 | 109 | ovs_u128 ct_label; /* Connection label. */ |
99fc16c0 BB |
110 | union flow_in_port in_port; /* Input port. */ |
111 | ); | |
112 | ||
113 | PADDED_MEMBERS_CACHELINE_MARKER(CACHE_LINE_SIZE, cacheline1, | |
daf4d3c1 JR |
114 | union { /* Populated only for non-zero 'ct_state'. */ |
115 | struct ovs_key_ct_tuple_ipv4 ipv4; | |
116 | struct ovs_key_ct_tuple_ipv6 ipv6; /* Used only if */ | |
117 | } ct_orig_tuple; /* 'ct_orig_tuple_ipv6' is set */ | |
99fc16c0 BB |
118 | ); |
119 | ||
120 | PADDED_MEMBERS_CACHELINE_MARKER(CACHE_LINE_SIZE, cacheline2, | |
59781952 JR |
121 | struct flow_tnl tunnel; /* Encapsulating tunnel parameters. Note that |
122 | * if 'ip_dst' == 0, the rest of the fields may | |
123 | * be uninitialized. */ | |
99fc16c0 | 124 | ); |
758c456d JR |
125 | }; |
126 | ||
99fc16c0 BB |
127 | BUILD_ASSERT_DECL(offsetof(struct pkt_metadata, cacheline0) == 0); |
128 | BUILD_ASSERT_DECL(offsetof(struct pkt_metadata, cacheline1) == | |
129 | CACHE_LINE_SIZE); | |
130 | BUILD_ASSERT_DECL(offsetof(struct pkt_metadata, cacheline2) == | |
131 | 2 * CACHE_LINE_SIZE); | |
132 | ||
6b241d64 PS |
133 | static inline void |
134 | pkt_metadata_init_tnl(struct pkt_metadata *md) | |
135 | { | |
136 | /* Zero up through the tunnel metadata options. The length and table | |
137 | * are before this and as long as they are empty, the options won't | |
138 | * be looked at. */ | |
139 | memset(md, 0, offsetof(struct pkt_metadata, tunnel.metadata.opts)); | |
140 | } | |
141 | ||
35303d71 JG |
142 | static inline void |
143 | pkt_metadata_init(struct pkt_metadata *md, odp_port_t port) | |
144 | { | |
af697f26 DDP |
145 | /* This is called for every packet in userspace datapath and affects |
146 | * performance if all the metadata is initialized. Hence, fields should | |
147 | * only be zeroed out when necessary. | |
148 | * | |
149 | * Initialize only till ct_state. Once the ct_state is zeroed out rest | |
150 | * of ct fields will not be looked at unless ct_state != 0. | |
151 | */ | |
152 | memset(md, 0, offsetof(struct pkt_metadata, ct_orig_tuple_ipv6)); | |
153 | ||
35303d71 JG |
154 | /* It can be expensive to zero out all of the tunnel metadata. However, |
155 | * we can just zero out ip_dst and the rest of the data will never be | |
156 | * looked at. */ | |
35303d71 | 157 | md->tunnel.ip_dst = 0; |
ffe4c74f | 158 | md->tunnel.ipv6_dst = in6addr_any; |
35303d71 JG |
159 | md->in_port.odp_port = port; |
160 | } | |
b5e7e61a | 161 | |
a90ed026 | 162 | /* This function prefetches the cachelines touched by pkt_metadata_init() |
2daae85a BB |
163 | * and pkt_metadata_init_tnl(). For performance reasons the two functions |
164 | * should be kept in sync. */ | |
a90ed026 DDP |
165 | static inline void |
166 | pkt_metadata_prefetch_init(struct pkt_metadata *md) | |
167 | { | |
99fc16c0 BB |
168 | /* Prefetch cacheline0 as members till ct_state and odp_port will |
169 | * be initialized later in pkt_metadata_init(). */ | |
170 | OVS_PREFETCH(md->cacheline0); | |
171 | ||
2daae85a BB |
172 | /* Prefetch cacheline1 as members of this cacheline will be zeroed out |
173 | * in pkt_metadata_init_tnl(). */ | |
174 | OVS_PREFETCH(md->cacheline1); | |
175 | ||
99fc16c0 BB |
176 | /* Prefetch cachline2 as ip_dst & ipv6_dst fields will be initialized. */ |
177 | OVS_PREFETCH(md->cacheline2); | |
a90ed026 DDP |
178 | } |
179 | ||
76343538 BP |
180 | bool dpid_from_string(const char *s, uint64_t *dpidp); |
181 | ||
064af421 BP |
182 | #define ETH_ADDR_LEN 6 |
183 | ||
74ff3298 | 184 | static const struct eth_addr eth_addr_broadcast OVS_UNUSED |
134fefa4 | 185 | = ETH_ADDR_C(ff,ff,ff,ff,ff,ff); |
064af421 | 186 | |
74ff3298 | 187 | static const struct eth_addr eth_addr_exact OVS_UNUSED |
134fefa4 | 188 | = ETH_ADDR_C(ff,ff,ff,ff,ff,ff); |
eb0b295e | 189 | |
74ff3298 | 190 | static const struct eth_addr eth_addr_zero OVS_UNUSED |
134fefa4 | 191 | = ETH_ADDR_C(00,00,00,00,00,00); |
b2342f7a | 192 | static const struct eth_addr64 eth_addr64_zero OVS_UNUSED |
134fefa4 | 193 | = ETH_ADDR64_C(00,00,00,00,00,00,00,00); |
ba186119 | 194 | |
74ff3298 | 195 | static const struct eth_addr eth_addr_stp OVS_UNUSED |
134fefa4 | 196 | = ETH_ADDR_C(01,80,c2,00,00,00); |
c25c91fd | 197 | |
74ff3298 | 198 | static const struct eth_addr eth_addr_lacp OVS_UNUSED |
134fefa4 | 199 | = ETH_ADDR_C(01,80,c2,00,00,02); |
de8d2ef9 | 200 | |
74ff3298 | 201 | static const struct eth_addr eth_addr_bfd OVS_UNUSED |
134fefa4 | 202 | = ETH_ADDR_C(00,23,20,00,00,01); |
74ff3298 JR |
203 | |
204 | static inline bool eth_addr_is_broadcast(const struct eth_addr a) | |
064af421 | 205 | { |
74ff3298 | 206 | return (a.be16[0] & a.be16[1] & a.be16[2]) == htons(0xffff); |
064af421 BP |
207 | } |
208 | ||
74ff3298 | 209 | static inline bool eth_addr_is_multicast(const struct eth_addr a) |
064af421 | 210 | { |
74ff3298 | 211 | return a.ea[0] & 1; |
064af421 | 212 | } |
74ff3298 JR |
213 | |
214 | static inline bool eth_addr_is_local(const struct eth_addr a) | |
064af421 | 215 | { |
70150daf JG |
216 | /* Local if it is either a locally administered address or a Nicira random |
217 | * address. */ | |
74ff3298 JR |
218 | return a.ea[0] & 2 |
219 | || (a.be16[0] == htons(0x0023) | |
220 | && (a.be16[1] & htons(0xff80)) == htons(0x2080)); | |
064af421 | 221 | } |
74ff3298 | 222 | static inline bool eth_addr_is_zero(const struct eth_addr a) |
064af421 | 223 | { |
74ff3298 | 224 | return !(a.be16[0] | a.be16[1] | a.be16[2]); |
064af421 | 225 | } |
b2342f7a BP |
226 | static inline bool eth_addr64_is_zero(const struct eth_addr64 a) |
227 | { | |
228 | return !(a.be16[0] | a.be16[1] | a.be16[2] | a.be16[3]); | |
229 | } | |
3b4d8ad3 | 230 | |
74ff3298 | 231 | static inline int eth_mask_is_exact(const struct eth_addr a) |
3b4d8ad3 | 232 | { |
74ff3298 | 233 | return (a.be16[0] & a.be16[1] & a.be16[2]) == htons(0xffff); |
3b4d8ad3 JS |
234 | } |
235 | ||
74ff3298 JR |
236 | static inline int eth_addr_compare_3way(const struct eth_addr a, |
237 | const struct eth_addr b) | |
130f6e5f | 238 | { |
74ff3298 | 239 | return memcmp(&a, &b, sizeof a); |
130f6e5f | 240 | } |
b2342f7a BP |
241 | static inline int eth_addr64_compare_3way(const struct eth_addr64 a, |
242 | const struct eth_addr64 b) | |
243 | { | |
244 | return memcmp(&a, &b, sizeof a); | |
245 | } | |
74ff3298 JR |
246 | |
247 | static inline bool eth_addr_equals(const struct eth_addr a, | |
248 | const struct eth_addr b) | |
064af421 | 249 | { |
130f6e5f | 250 | return !eth_addr_compare_3way(a, b); |
064af421 | 251 | } |
b2342f7a BP |
252 | static inline bool eth_addr64_equals(const struct eth_addr64 a, |
253 | const struct eth_addr64 b) | |
254 | { | |
255 | return !eth_addr64_compare_3way(a, b); | |
256 | } | |
74ff3298 JR |
257 | |
258 | static inline bool eth_addr_equal_except(const struct eth_addr a, | |
259 | const struct eth_addr b, | |
260 | const struct eth_addr mask) | |
3b4d8ad3 | 261 | { |
74ff3298 JR |
262 | return !(((a.be16[0] ^ b.be16[0]) & mask.be16[0]) |
263 | || ((a.be16[1] ^ b.be16[1]) & mask.be16[1]) | |
264 | || ((a.be16[2] ^ b.be16[2]) & mask.be16[2])); | |
3b4d8ad3 | 265 | } |
74ff3298 JR |
266 | |
267 | static inline uint64_t eth_addr_to_uint64(const struct eth_addr ea) | |
064af421 | 268 | { |
74ff3298 JR |
269 | return (((uint64_t) ntohs(ea.be16[0]) << 32) |
270 | | ((uint64_t) ntohs(ea.be16[1]) << 16) | |
271 | | ntohs(ea.be16[2])); | |
064af421 | 272 | } |
74ff3298 JR |
273 | |
274 | static inline uint64_t eth_addr_vlan_to_uint64(const struct eth_addr ea, | |
7e36ac42 AZ |
275 | uint16_t vlan) |
276 | { | |
277 | return (((uint64_t)vlan << 48) | eth_addr_to_uint64(ea)); | |
278 | } | |
74ff3298 JR |
279 | |
280 | static inline void eth_addr_from_uint64(uint64_t x, struct eth_addr *ea) | |
281 | { | |
282 | ea->be16[0] = htons(x >> 32); | |
37ba4764 AC |
283 | ea->be16[1] = htons((x & 0xFFFF0000) >> 16); |
284 | ea->be16[2] = htons(x & 0xFFFF); | |
74ff3298 JR |
285 | } |
286 | ||
287 | static inline struct eth_addr eth_addr_invert(const struct eth_addr src) | |
064af421 | 288 | { |
74ff3298 JR |
289 | struct eth_addr dst; |
290 | ||
291 | for (int i = 0; i < ARRAY_SIZE(src.be16); i++) { | |
292 | dst.be16[i] = ~src.be16[i]; | |
293 | } | |
294 | ||
295 | return dst; | |
064af421 | 296 | } |
74ff3298 JR |
297 | |
298 | static inline void eth_addr_mark_random(struct eth_addr *ea) | |
064af421 | 299 | { |
74ff3298 JR |
300 | ea->ea[0] &= ~1; /* Unicast. */ |
301 | ea->ea[0] |= 2; /* Private. */ | |
064af421 | 302 | } |
74ff3298 JR |
303 | |
304 | static inline void eth_addr_random(struct eth_addr *ea) | |
064af421 | 305 | { |
74ff3298 | 306 | random_bytes((uint8_t *)ea, sizeof *ea); |
064af421 BP |
307 | eth_addr_mark_random(ea); |
308 | } | |
74ff3298 JR |
309 | |
310 | static inline void eth_addr_nicira_random(struct eth_addr *ea) | |
70150daf JG |
311 | { |
312 | eth_addr_random(ea); | |
313 | ||
314 | /* Set the OUI to the Nicira one. */ | |
74ff3298 JR |
315 | ea->ea[0] = 0x00; |
316 | ea->ea[1] = 0x23; | |
317 | ea->ea[2] = 0x20; | |
70150daf JG |
318 | |
319 | /* Set the top bit to indicate random Nicira address. */ | |
74ff3298 | 320 | ea->ea[3] |= 0x80; |
70150daf | 321 | } |
74ff3298 | 322 | static inline uint32_t hash_mac(const struct eth_addr ea, |
7e36ac42 AZ |
323 | const uint16_t vlan, const uint32_t basis) |
324 | { | |
325 | return hash_uint64_basis(eth_addr_vlan_to_uint64(ea, vlan), basis); | |
326 | } | |
064af421 | 327 | |
74ff3298 JR |
328 | bool eth_addr_is_reserved(const struct eth_addr); |
329 | bool eth_addr_from_string(const char *, struct eth_addr *); | |
76343538 | 330 | |
74ff3298 | 331 | void compose_rarp(struct dp_packet *, const struct eth_addr); |
b9e8b45a | 332 | |
cf62fa4c PS |
333 | void eth_push_vlan(struct dp_packet *, ovs_be16 tpid, ovs_be16 tci); |
334 | void eth_pop_vlan(struct dp_packet *); | |
7c66b273 | 335 | |
cf62fa4c | 336 | const char *eth_from_hex(const char *hex, struct dp_packet **packetp); |
74ff3298 JR |
337 | void eth_format_masked(const struct eth_addr ea, |
338 | const struct eth_addr *mask, struct ds *s); | |
e22f1753 | 339 | |
cf62fa4c PS |
340 | void set_mpls_lse(struct dp_packet *, ovs_be32 label); |
341 | void push_mpls(struct dp_packet *packet, ovs_be16 ethtype, ovs_be32 lse); | |
342 | void pop_mpls(struct dp_packet *, ovs_be16 ethtype); | |
b02475c5 | 343 | |
b676167a | 344 | void set_mpls_lse_ttl(ovs_be32 *lse, uint8_t ttl); |
b02475c5 SH |
345 | void set_mpls_lse_tc(ovs_be32 *lse, uint8_t tc); |
346 | void set_mpls_lse_label(ovs_be32 *lse, ovs_be32 label); | |
347 | void set_mpls_lse_bos(ovs_be32 *lse, uint8_t bos); | |
348 | ovs_be32 set_mpls_lse_values(uint8_t ttl, uint8_t tc, uint8_t bos, | |
349 | ovs_be32 label); | |
350 | ||
eaa71334 BP |
351 | /* Example: |
352 | * | |
74ff3298 | 353 | * struct eth_addr mac; |
eaa71334 BP |
354 | * [...] |
355 | * printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac)); | |
356 | * | |
357 | */ | |
064af421 BP |
358 | #define ETH_ADDR_FMT \ |
359 | "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8 | |
ca92d173 AC |
360 | #define ETH_ADDR_ARGS(EA) ETH_ADDR_BYTES_ARGS((EA).ea) |
361 | #define ETH_ADDR_BYTES_ARGS(EAB) \ | |
362 | (EAB)[0], (EAB)[1], (EAB)[2], (EAB)[3], (EAB)[4], (EAB)[5] | |
b0d390e5 | 363 | #define ETH_ADDR_STRLEN 17 |
064af421 | 364 | |
b2342f7a BP |
365 | /* Example: |
366 | * | |
367 | * struct eth_addr64 eui64; | |
368 | * [...] | |
369 | * printf("The EUI-64 address is "ETH_ADDR64_FMT"\n", ETH_ADDR64_ARGS(mac)); | |
370 | * | |
371 | */ | |
372 | #define ETH_ADDR64_FMT \ | |
373 | "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":" \ | |
374 | "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8 | |
375 | #define ETH_ADDR64_ARGS(EA) ETH_ADDR64_BYTES_ARGS((EA).ea64) | |
376 | #define ETH_ADDR64_BYTES_ARGS(EAB) \ | |
377 | (EAB)[0], (EAB)[1], (EAB)[2], (EAB)[3], \ | |
378 | (EAB)[4], (EAB)[5], (EAB)[6], (EAB)[7] | |
379 | #define ETH_ADDR64_STRLEN 23 | |
380 | ||
eaa71334 BP |
381 | /* Example: |
382 | * | |
383 | * char *string = "1 00:11:22:33:44:55 2"; | |
74ff3298 | 384 | * struct eth_addr mac; |
eaa71334 BP |
385 | * int a, b; |
386 | * | |
c2c28dfd BP |
387 | * if (ovs_scan(string, "%d"ETH_ADDR_SCAN_FMT"%d", |
388 | * &a, ETH_ADDR_SCAN_ARGS(mac), &b)) { | |
eaa71334 BP |
389 | * ... |
390 | * } | |
391 | */ | |
392 | #define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8 | |
74ff3298 JR |
393 | #define ETH_ADDR_SCAN_ARGS(EA) \ |
394 | &(EA).ea[0], &(EA).ea[1], &(EA).ea[2], &(EA).ea[3], &(EA).ea[4], &(EA).ea[5] | |
eaa71334 | 395 | |
064af421 BP |
396 | #define ETH_TYPE_IP 0x0800 |
397 | #define ETH_TYPE_ARP 0x0806 | |
a36de779 | 398 | #define ETH_TYPE_TEB 0x6558 |
3e34fbdd IY |
399 | #define ETH_TYPE_VLAN_8021Q 0x8100 |
400 | #define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q | |
401 | #define ETH_TYPE_VLAN_8021AD 0x88a8 | |
d31f1109 | 402 | #define ETH_TYPE_IPV6 0x86dd |
c25c91fd | 403 | #define ETH_TYPE_LACP 0x8809 |
38f7147c | 404 | #define ETH_TYPE_RARP 0x8035 |
4fba171d BP |
405 | #define ETH_TYPE_MPLS 0x8847 |
406 | #define ETH_TYPE_MPLS_MCAST 0x8848 | |
3d2fbd70 | 407 | #define ETH_TYPE_NSH 0x894f |
7dc18ae9 WT |
408 | #define ETH_TYPE_ERSPAN1 0x88be /* version 1 type II */ |
409 | #define ETH_TYPE_ERSPAN2 0x22eb /* version 2 type III */ | |
064af421 | 410 | |
b02475c5 SH |
411 | static inline bool eth_type_mpls(ovs_be16 eth_type) |
412 | { | |
413 | return eth_type == htons(ETH_TYPE_MPLS) || | |
414 | eth_type == htons(ETH_TYPE_MPLS_MCAST); | |
415 | } | |
416 | ||
d6943394 TH |
417 | static inline bool eth_type_vlan(ovs_be16 eth_type) |
418 | { | |
419 | return eth_type == htons(ETH_TYPE_VLAN_8021Q) || | |
420 | eth_type == htons(ETH_TYPE_VLAN_8021AD); | |
421 | } | |
422 | ||
423 | ||
36956a7d BP |
424 | /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame |
425 | * lengths. */ | |
426 | #define ETH_TYPE_MIN 0x600 | |
427 | ||
064af421 BP |
428 | #define ETH_HEADER_LEN 14 |
429 | #define ETH_PAYLOAD_MIN 46 | |
430 | #define ETH_PAYLOAD_MAX 1500 | |
431 | #define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN) | |
432 | #define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX) | |
433 | #define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX) | |
434 | struct eth_header { | |
74ff3298 JR |
435 | struct eth_addr eth_dst; |
436 | struct eth_addr eth_src; | |
d5ca4fce | 437 | ovs_be16 eth_type; |
1620b7ea | 438 | }; |
064af421 BP |
439 | BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header)); |
440 | ||
88fc5281 JS |
441 | void push_eth(struct dp_packet *packet, const struct eth_addr *dst, |
442 | const struct eth_addr *src); | |
443 | void pop_eth(struct dp_packet *packet); | |
444 | ||
f59cb331 YY |
445 | void push_nsh(struct dp_packet *packet, const struct nsh_hdr *nsh_hdr_src); |
446 | bool pop_nsh(struct dp_packet *packet); | |
1fc11c59 | 447 | |
064af421 BP |
448 | #define LLC_DSAP_SNAP 0xaa |
449 | #define LLC_SSAP_SNAP 0xaa | |
450 | #define LLC_CNTL_SNAP 3 | |
451 | ||
452 | #define LLC_HEADER_LEN 3 | |
453 | struct llc_header { | |
454 | uint8_t llc_dsap; | |
455 | uint8_t llc_ssap; | |
456 | uint8_t llc_cntl; | |
1620b7ea | 457 | }; |
064af421 BP |
458 | BUILD_ASSERT_DECL(LLC_HEADER_LEN == sizeof(struct llc_header)); |
459 | ||
9efd308e DV |
460 | /* LLC field values used for STP frames. */ |
461 | #define STP_LLC_SSAP 0x42 | |
462 | #define STP_LLC_DSAP 0x42 | |
463 | #define STP_LLC_CNTL 0x03 | |
464 | ||
064af421 BP |
465 | #define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so |
466 | sizeof(SNAP_ORG_ETHERNET) == 3. */ | |
467 | #define SNAP_HEADER_LEN 5 | |
13b6bae6 | 468 | OVS_PACKED( |
064af421 BP |
469 | struct snap_header { |
470 | uint8_t snap_org[3]; | |
d5ca4fce | 471 | ovs_be16 snap_type; |
13b6bae6 | 472 | }); |
064af421 BP |
473 | BUILD_ASSERT_DECL(SNAP_HEADER_LEN == sizeof(struct snap_header)); |
474 | ||
475 | #define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN) | |
13b6bae6 | 476 | OVS_PACKED( |
064af421 BP |
477 | struct llc_snap_header { |
478 | struct llc_header llc; | |
479 | struct snap_header snap; | |
13b6bae6 | 480 | }); |
064af421 BP |
481 | BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header)); |
482 | ||
483 | #define VLAN_VID_MASK 0x0fff | |
33ce24ed BP |
484 | #define VLAN_VID_SHIFT 0 |
485 | ||
064af421 | 486 | #define VLAN_PCP_MASK 0xe000 |
33ce24ed | 487 | #define VLAN_PCP_SHIFT 13 |
064af421 | 488 | |
26233bb4 | 489 | #define VLAN_CFI 0x1000 |
e6cc0bab | 490 | #define VLAN_CFI_SHIFT 12 |
26233bb4 BP |
491 | |
492 | /* Given the vlan_tci field from an 802.1Q header, in network byte order, | |
493 | * returns the VLAN ID in host byte order. */ | |
494 | static inline uint16_t | |
d5ca4fce | 495 | vlan_tci_to_vid(ovs_be16 vlan_tci) |
26233bb4 BP |
496 | { |
497 | return (ntohs(vlan_tci) & VLAN_VID_MASK) >> VLAN_VID_SHIFT; | |
498 | } | |
499 | ||
500 | /* Given the vlan_tci field from an 802.1Q header, in network byte order, | |
501 | * returns the priority code point (PCP) in host byte order. */ | |
502 | static inline int | |
d5ca4fce | 503 | vlan_tci_to_pcp(ovs_be16 vlan_tci) |
26233bb4 BP |
504 | { |
505 | return (ntohs(vlan_tci) & VLAN_PCP_MASK) >> VLAN_PCP_SHIFT; | |
506 | } | |
507 | ||
e6cc0bab AZ |
508 | /* Given the vlan_tci field from an 802.1Q header, in network byte order, |
509 | * returns the Canonical Format Indicator (CFI). */ | |
510 | static inline int | |
511 | vlan_tci_to_cfi(ovs_be16 vlan_tci) | |
512 | { | |
513 | return (vlan_tci & htons(VLAN_CFI)) != 0; | |
514 | } | |
515 | ||
064af421 BP |
516 | #define VLAN_HEADER_LEN 4 |
517 | struct vlan_header { | |
d5ca4fce EJ |
518 | ovs_be16 vlan_tci; /* Lowest 12 bits are VLAN ID. */ |
519 | ovs_be16 vlan_next_type; | |
064af421 BP |
520 | }; |
521 | BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header)); | |
522 | ||
523 | #define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN) | |
524 | struct vlan_eth_header { | |
74ff3298 JR |
525 | struct eth_addr veth_dst; |
526 | struct eth_addr veth_src; | |
d5ca4fce EJ |
527 | ovs_be16 veth_type; /* Always htons(ETH_TYPE_VLAN). */ |
528 | ovs_be16 veth_tci; /* Lowest 12 bits are VLAN ID. */ | |
529 | ovs_be16 veth_next_type; | |
1620b7ea | 530 | }; |
064af421 BP |
531 | BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header)); |
532 | ||
b02475c5 SH |
533 | /* MPLS related definitions */ |
534 | #define MPLS_TTL_MASK 0x000000ff | |
535 | #define MPLS_TTL_SHIFT 0 | |
536 | ||
537 | #define MPLS_BOS_MASK 0x00000100 | |
538 | #define MPLS_BOS_SHIFT 8 | |
539 | ||
540 | #define MPLS_TC_MASK 0x00000e00 | |
541 | #define MPLS_TC_SHIFT 9 | |
542 | ||
543 | #define MPLS_LABEL_MASK 0xfffff000 | |
544 | #define MPLS_LABEL_SHIFT 12 | |
545 | ||
546 | #define MPLS_HLEN 4 | |
547 | ||
548 | struct mpls_hdr { | |
5fa008d4 | 549 | ovs_16aligned_be32 mpls_lse; |
b02475c5 SH |
550 | }; |
551 | BUILD_ASSERT_DECL(MPLS_HLEN == sizeof(struct mpls_hdr)); | |
552 | ||
553 | /* Given a mpls label stack entry in network byte order | |
554 | * return mpls label in host byte order */ | |
555 | static inline uint32_t | |
556 | mpls_lse_to_label(ovs_be32 mpls_lse) | |
557 | { | |
558 | return (ntohl(mpls_lse) & MPLS_LABEL_MASK) >> MPLS_LABEL_SHIFT; | |
559 | } | |
560 | ||
561 | /* Given a mpls label stack entry in network byte order | |
562 | * return mpls tc */ | |
563 | static inline uint8_t | |
564 | mpls_lse_to_tc(ovs_be32 mpls_lse) | |
565 | { | |
566 | return (ntohl(mpls_lse) & MPLS_TC_MASK) >> MPLS_TC_SHIFT; | |
567 | } | |
568 | ||
569 | /* Given a mpls label stack entry in network byte order | |
570 | * return mpls ttl */ | |
571 | static inline uint8_t | |
572 | mpls_lse_to_ttl(ovs_be32 mpls_lse) | |
573 | { | |
574 | return (ntohl(mpls_lse) & MPLS_TTL_MASK) >> MPLS_TTL_SHIFT; | |
575 | } | |
576 | ||
577 | /* Set TTL in mpls lse. */ | |
578 | static inline void | |
579 | flow_set_mpls_lse_ttl(ovs_be32 *mpls_lse, uint8_t ttl) | |
580 | { | |
581 | *mpls_lse &= ~htonl(MPLS_TTL_MASK); | |
582 | *mpls_lse |= htonl(ttl << MPLS_TTL_SHIFT); | |
583 | } | |
584 | ||
585 | /* Given a mpls label stack entry in network byte order | |
586 | * return mpls BoS bit */ | |
587 | static inline uint8_t | |
588 | mpls_lse_to_bos(ovs_be32 mpls_lse) | |
589 | { | |
590 | return (mpls_lse & htonl(MPLS_BOS_MASK)) != 0; | |
591 | } | |
592 | ||
ed36537e | 593 | #define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32 |
064af421 | 594 | #define IP_ARGS(ip) \ |
ed36537e BP |
595 | ntohl(ip) >> 24, \ |
596 | (ntohl(ip) >> 16) & 0xff, \ | |
597 | (ntohl(ip) >> 8) & 0xff, \ | |
598 | ntohl(ip) & 0xff | |
064af421 | 599 | |
3bffc610 BP |
600 | /* Example: |
601 | * | |
602 | * char *string = "1 33.44.55.66 2"; | |
603 | * ovs_be32 ip; | |
604 | * int a, b; | |
605 | * | |
c2c28dfd | 606 | * if (ovs_scan(string, "%d"IP_SCAN_FMT"%d", &a, IP_SCAN_ARGS(&ip), &b)) { |
3bffc610 BP |
607 | * ... |
608 | * } | |
609 | */ | |
610 | #define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8 | |
611 | #define IP_SCAN_ARGS(ip) \ | |
612 | ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \ | |
613 | &((uint8_t *) ip)[1], \ | |
614 | &((uint8_t *) ip)[2], \ | |
615 | &((uint8_t *) ip)[3] | |
3bffc610 | 616 | |
e2bfcad6 | 617 | #define IP_PORT_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8":%"SCNu16 |
618 | #define IP_PORT_SCAN_ARGS(ip, port) \ | |
619 | ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \ | |
620 | &((uint8_t *) ip)[1], \ | |
621 | &((uint8_t *) ip)[2], \ | |
622 | &((uint8_t *) ip)[3], \ | |
623 | ((void) (ovs_be16) *(port), (uint16_t *) port) | |
624 | ||
0596e897 BP |
625 | /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N |
626 | * high-order 1-bits and 32-N low-order 0-bits. */ | |
627 | static inline bool | |
628 | ip_is_cidr(ovs_be32 netmask) | |
629 | { | |
630 | uint32_t x = ~ntohl(netmask); | |
631 | return !(x & (x + 1)); | |
632 | } | |
b37e6334 BP |
633 | static inline bool |
634 | ip_is_multicast(ovs_be32 ip) | |
635 | { | |
636 | return (ip & htonl(0xf0000000)) == htonl(0xe0000000); | |
637 | } | |
7e598a7d FL |
638 | static inline bool |
639 | ip_is_local_multicast(ovs_be32 ip) | |
640 | { | |
641 | return (ip & htonl(0xffffff00)) == htonl(0xe0000000); | |
642 | } | |
aad29cd1 BP |
643 | int ip_count_cidr_bits(ovs_be32 netmask); |
644 | void ip_format_masked(ovs_be32 ip, ovs_be32 mask, struct ds *); | |
2b02db1b | 645 | bool ip_parse(const char *s, ovs_be32 *ip); |
e2bfcad6 | 646 | char *ip_parse_port(const char *s, ovs_be32 *ip, ovs_be16 *port) |
647 | OVS_WARN_UNUSED_RESULT; | |
61440451 BP |
648 | char *ip_parse_masked(const char *s, ovs_be32 *ip, ovs_be32 *mask) |
649 | OVS_WARN_UNUSED_RESULT; | |
2b02db1b BP |
650 | char *ip_parse_cidr(const char *s, ovs_be32 *ip, unsigned int *plen) |
651 | OVS_WARN_UNUSED_RESULT; | |
7dc88496 NS |
652 | char *ip_parse_masked_len(const char *s, int *n, ovs_be32 *ip, ovs_be32 *mask) |
653 | OVS_WARN_UNUSED_RESULT; | |
654 | char *ip_parse_cidr_len(const char *s, int *n, ovs_be32 *ip, | |
655 | unsigned int *plen) | |
656 | OVS_WARN_UNUSED_RESULT; | |
0596e897 | 657 | |
064af421 BP |
658 | #define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4) |
659 | #define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15) | |
660 | #define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl)) | |
661 | ||
6c99379e BP |
662 | #ifndef IPPROTO_SCTP |
663 | #define IPPROTO_SCTP 132 | |
664 | #endif | |
665 | ||
81f97b1e JR |
666 | #ifndef IPPROTO_DCCP |
667 | #define IPPROTO_DCCP 33 | |
668 | #endif | |
669 | ||
670 | #ifndef IPPROTO_IGMP | |
671 | #define IPPROTO_IGMP 2 | |
672 | #endif | |
673 | ||
674 | #ifndef IPPROTO_UDPLITE | |
675 | #define IPPROTO_UDPLITE 136 | |
676 | #endif | |
677 | ||
f1193301 | 678 | /* TOS fields. */ |
495fe264 JG |
679 | #define IP_ECN_NOT_ECT 0x0 |
680 | #define IP_ECN_ECT_1 0x01 | |
681 | #define IP_ECN_ECT_0 0x02 | |
682 | #define IP_ECN_CE 0x03 | |
f1193301 BP |
683 | #define IP_ECN_MASK 0x03 |
684 | #define IP_DSCP_MASK 0xfc | |
685 | ||
1bc3f0ed PS |
686 | static inline int |
687 | IP_ECN_is_ce(uint8_t dsfield) | |
688 | { | |
689 | return (dsfield & IP_ECN_MASK) == IP_ECN_CE; | |
690 | } | |
691 | ||
064af421 BP |
692 | #define IP_VERSION 4 |
693 | ||
694 | #define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */ | |
695 | #define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */ | |
696 | #define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */ | |
697 | #define IP_IS_FRAGMENT(ip_frag_off) \ | |
698 | ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK)) | |
699 | ||
700 | #define IP_HEADER_LEN 20 | |
701 | struct ip_header { | |
702 | uint8_t ip_ihl_ver; | |
703 | uint8_t ip_tos; | |
d5ca4fce EJ |
704 | ovs_be16 ip_tot_len; |
705 | ovs_be16 ip_id; | |
706 | ovs_be16 ip_frag_off; | |
064af421 BP |
707 | uint8_t ip_ttl; |
708 | uint8_t ip_proto; | |
d5ca4fce | 709 | ovs_be16 ip_csum; |
7c457c33 BP |
710 | ovs_16aligned_be32 ip_src; |
711 | ovs_16aligned_be32 ip_dst; | |
064af421 BP |
712 | }; |
713 | BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header)); | |
714 | ||
caf64dc9 DDP |
715 | /* ICMPv4 types. */ |
716 | #define ICMP4_ECHO_REPLY 0 | |
717 | #define ICMP4_DST_UNREACH 3 | |
718 | #define ICMP4_SOURCEQUENCH 4 | |
719 | #define ICMP4_REDIRECT 5 | |
720 | #define ICMP4_ECHO_REQUEST 8 | |
721 | #define ICMP4_TIME_EXCEEDED 11 | |
722 | #define ICMP4_PARAM_PROB 12 | |
723 | #define ICMP4_TIMESTAMP 13 | |
724 | #define ICMP4_TIMESTAMPREPLY 14 | |
725 | #define ICMP4_INFOREQUEST 15 | |
726 | #define ICMP4_INFOREPLY 16 | |
727 | ||
c4ccff78 | 728 | #define ICMP_HEADER_LEN 8 |
064af421 BP |
729 | struct icmp_header { |
730 | uint8_t icmp_type; | |
731 | uint8_t icmp_code; | |
d5ca4fce | 732 | ovs_be16 icmp_csum; |
c4ccff78 JG |
733 | union { |
734 | struct { | |
735 | ovs_be16 id; | |
736 | ovs_be16 seq; | |
737 | } echo; | |
738 | struct { | |
739 | ovs_be16 empty; | |
740 | ovs_be16 mtu; | |
741 | } frag; | |
7c457c33 | 742 | ovs_16aligned_be32 gateway; |
c4ccff78 | 743 | } icmp_fields; |
064af421 BP |
744 | }; |
745 | BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_header)); | |
746 | ||
8e451a96 DB |
747 | #define IGMP_HEADER_LEN 8 |
748 | struct igmp_header { | |
749 | uint8_t igmp_type; | |
750 | uint8_t igmp_code; | |
751 | ovs_be16 igmp_csum; | |
752 | ovs_16aligned_be32 group; | |
753 | }; | |
754 | BUILD_ASSERT_DECL(IGMP_HEADER_LEN == sizeof(struct igmp_header)); | |
755 | ||
e3102e42 TLSC |
756 | #define IGMPV3_HEADER_LEN 8 |
757 | struct igmpv3_header { | |
758 | uint8_t type; | |
759 | uint8_t rsvr1; | |
760 | ovs_be16 csum; | |
761 | ovs_be16 rsvr2; | |
762 | ovs_be16 ngrp; | |
763 | }; | |
764 | BUILD_ASSERT_DECL(IGMPV3_HEADER_LEN == sizeof(struct igmpv3_header)); | |
765 | ||
766 | #define IGMPV3_RECORD_LEN 8 | |
767 | struct igmpv3_record { | |
768 | uint8_t type; | |
769 | uint8_t aux_len; | |
770 | ovs_be16 nsrcs; | |
771 | ovs_16aligned_be32 maddr; | |
772 | }; | |
773 | BUILD_ASSERT_DECL(IGMPV3_RECORD_LEN == sizeof(struct igmpv3_record)); | |
774 | ||
8e451a96 DB |
775 | #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */ |
776 | #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */ | |
777 | #define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x12 */ | |
778 | #define IGMP_HOST_LEAVE_MESSAGE 0x17 | |
779 | #define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x12 */ | |
780 | ||
06994f87 TLSC |
781 | /* |
782 | * IGMPv3 and MLDv2 use the same codes. | |
783 | */ | |
e3102e42 TLSC |
784 | #define IGMPV3_MODE_IS_INCLUDE 1 |
785 | #define IGMPV3_MODE_IS_EXCLUDE 2 | |
786 | #define IGMPV3_CHANGE_TO_INCLUDE_MODE 3 | |
787 | #define IGMPV3_CHANGE_TO_EXCLUDE_MODE 4 | |
788 | #define IGMPV3_ALLOW_NEW_SOURCES 5 | |
789 | #define IGMPV3_BLOCK_OLD_SOURCES 6 | |
790 | ||
c6bcb685 JS |
791 | #define SCTP_HEADER_LEN 12 |
792 | struct sctp_header { | |
793 | ovs_be16 sctp_src; | |
794 | ovs_be16 sctp_dst; | |
5fa008d4 BP |
795 | ovs_16aligned_be32 sctp_vtag; |
796 | ovs_16aligned_be32 sctp_csum; | |
c6bcb685 JS |
797 | }; |
798 | BUILD_ASSERT_DECL(SCTP_HEADER_LEN == sizeof(struct sctp_header)); | |
799 | ||
064af421 BP |
800 | #define UDP_HEADER_LEN 8 |
801 | struct udp_header { | |
d5ca4fce EJ |
802 | ovs_be16 udp_src; |
803 | ovs_be16 udp_dst; | |
804 | ovs_be16 udp_len; | |
805 | ovs_be16 udp_csum; | |
064af421 BP |
806 | }; |
807 | BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header)); | |
808 | ||
bc61c7b4 IS |
809 | #define ESP_HEADER_LEN 8 |
810 | struct esp_header { | |
811 | ovs_be32 spi; | |
812 | ovs_be32 seq_no; | |
813 | }; | |
814 | BUILD_ASSERT_DECL(ESP_HEADER_LEN == sizeof(struct esp_header)); | |
815 | ||
816 | #define ESP_TRAILER_LEN 2 | |
817 | struct esp_trailer { | |
818 | uint8_t pad_len; | |
819 | uint8_t next_hdr; | |
820 | }; | |
821 | BUILD_ASSERT_DECL(ESP_TRAILER_LEN == sizeof(struct esp_trailer)); | |
822 | ||
a66733a8 JR |
823 | #define TCP_FIN 0x001 |
824 | #define TCP_SYN 0x002 | |
825 | #define TCP_RST 0x004 | |
826 | #define TCP_PSH 0x008 | |
827 | #define TCP_ACK 0x010 | |
828 | #define TCP_URG 0x020 | |
829 | #define TCP_ECE 0x040 | |
830 | #define TCP_CWR 0x080 | |
831 | #define TCP_NS 0x100 | |
064af421 | 832 | |
df9b6612 | 833 | #define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12))) |
a66733a8 | 834 | #define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff) |
419681da | 835 | #define TCP_FLAGS_BE16(tcp_ctl) ((tcp_ctl) & htons(0x0fff)) |
d84d4b88 | 836 | #define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12) |
064af421 BP |
837 | |
838 | #define TCP_HEADER_LEN 20 | |
839 | struct tcp_header { | |
d5ca4fce EJ |
840 | ovs_be16 tcp_src; |
841 | ovs_be16 tcp_dst; | |
7c457c33 BP |
842 | ovs_16aligned_be32 tcp_seq; |
843 | ovs_16aligned_be32 tcp_ack; | |
d5ca4fce EJ |
844 | ovs_be16 tcp_ctl; |
845 | ovs_be16 tcp_winsz; | |
846 | ovs_be16 tcp_csum; | |
847 | ovs_be16 tcp_urg; | |
064af421 BP |
848 | }; |
849 | BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header)); | |
850 | ||
fd6cd1bf BP |
851 | /* Connection states. |
852 | * | |
853 | * Names like CS_RELATED are bit values, e.g. 1 << 2. | |
854 | * Names like CS_RELATED_BIT are bit indexes, e.g. 2. */ | |
855 | #define CS_STATES \ | |
856 | CS_STATE(NEW, 0, "new") \ | |
857 | CS_STATE(ESTABLISHED, 1, "est") \ | |
858 | CS_STATE(RELATED, 2, "rel") \ | |
859 | CS_STATE(REPLY_DIR, 3, "rpl") \ | |
860 | CS_STATE(INVALID, 4, "inv") \ | |
861 | CS_STATE(TRACKED, 5, "trk") \ | |
862 | CS_STATE(SRC_NAT, 6, "snat") \ | |
863 | CS_STATE(DST_NAT, 7, "dnat") | |
aa68cf38 RB |
864 | |
865 | enum { | |
fd6cd1bf BP |
866 | #define CS_STATE(ENUM, INDEX, NAME) \ |
867 | CS_##ENUM = 1 << INDEX, \ | |
868 | CS_##ENUM##_BIT = INDEX, | |
869 | CS_STATES | |
870 | #undef CS_STATE | |
aa68cf38 | 871 | }; |
07659514 JS |
872 | |
873 | /* Undefined connection state bits. */ | |
fd6cd1bf BP |
874 | enum { |
875 | #define CS_STATE(ENUM, INDEX, NAME) +CS_##ENUM | |
876 | CS_SUPPORTED_MASK = CS_STATES | |
877 | #undef CS_STATE | |
878 | }; | |
07659514 JS |
879 | #define CS_UNSUPPORTED_MASK (~(uint32_t)CS_SUPPORTED_MASK) |
880 | ||
064af421 BP |
881 | #define ARP_HRD_ETHERNET 1 |
882 | #define ARP_PRO_IP 0x0800 | |
883 | #define ARP_OP_REQUEST 1 | |
884 | #define ARP_OP_REPLY 2 | |
7cb57d10 | 885 | #define ARP_OP_RARP 3 |
064af421 BP |
886 | |
887 | #define ARP_ETH_HEADER_LEN 28 | |
888 | struct arp_eth_header { | |
889 | /* Generic members. */ | |
d5ca4fce EJ |
890 | ovs_be16 ar_hrd; /* Hardware type. */ |
891 | ovs_be16 ar_pro; /* Protocol type. */ | |
064af421 BP |
892 | uint8_t ar_hln; /* Hardware address length. */ |
893 | uint8_t ar_pln; /* Protocol address length. */ | |
d5ca4fce | 894 | ovs_be16 ar_op; /* Opcode. */ |
064af421 BP |
895 | |
896 | /* Ethernet+IPv4 specific members. */ | |
74ff3298 JR |
897 | struct eth_addr ar_sha; /* Sender hardware address. */ |
898 | ovs_16aligned_be32 ar_spa; /* Sender protocol address. */ | |
899 | struct eth_addr ar_tha; /* Target hardware address. */ | |
900 | ovs_16aligned_be32 ar_tpa; /* Target protocol address. */ | |
7c457c33 | 901 | }; |
064af421 BP |
902 | BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header)); |
903 | ||
370e373b TLSC |
904 | #define IPV6_HEADER_LEN 40 |
905 | ||
4528f34f BP |
906 | /* Like struct in6_addr, but whereas that struct requires 32-bit alignment on |
907 | * most implementations, this one only requires 16-bit alignment. */ | |
908 | union ovs_16aligned_in6_addr { | |
909 | ovs_be16 be16[8]; | |
910 | ovs_16aligned_be32 be32[4]; | |
911 | }; | |
912 | ||
913 | /* Like struct in6_hdr, but whereas that struct requires 32-bit alignment, this | |
914 | * one only requires 16-bit alignment. */ | |
915 | struct ovs_16aligned_ip6_hdr { | |
916 | union { | |
917 | struct ovs_16aligned_ip6_hdrctl { | |
918 | ovs_16aligned_be32 ip6_un1_flow; | |
919 | ovs_be16 ip6_un1_plen; | |
920 | uint8_t ip6_un1_nxt; | |
921 | uint8_t ip6_un1_hlim; | |
922 | } ip6_un1; | |
923 | uint8_t ip6_un2_vfc; | |
924 | } ip6_ctlun; | |
925 | union ovs_16aligned_in6_addr ip6_src; | |
926 | union ovs_16aligned_in6_addr ip6_dst; | |
927 | }; | |
928 | ||
929 | /* Like struct in6_frag, but whereas that struct requires 32-bit alignment, | |
930 | * this one only requires 16-bit alignment. */ | |
931 | struct ovs_16aligned_ip6_frag { | |
932 | uint8_t ip6f_nxt; | |
933 | uint8_t ip6f_reserved; | |
934 | ovs_be16 ip6f_offlg; | |
935 | ovs_16aligned_be32 ip6f_ident; | |
936 | }; | |
937 | ||
5abf65d0 JG |
938 | #define ICMP6_HEADER_LEN 4 |
939 | struct icmp6_header { | |
940 | uint8_t icmp6_type; | |
941 | uint8_t icmp6_code; | |
942 | ovs_be16 icmp6_cksum; | |
5abf65d0 JG |
943 | }; |
944 | BUILD_ASSERT_DECL(ICMP6_HEADER_LEN == sizeof(struct icmp6_header)); | |
945 | ||
edd1bef4 DB |
946 | #define ICMP6_ERROR_HEADER_LEN 8 |
947 | struct icmp6_error_header { | |
948 | struct icmp6_header icmp6_base; | |
949 | ovs_be32 icmp6_error_ext; | |
950 | }; | |
951 | BUILD_ASSERT_DECL(ICMP6_ERROR_HEADER_LEN == sizeof(struct icmp6_error_header)); | |
952 | ||
370e373b | 953 | uint32_t packet_csum_pseudoheader6(const struct ovs_16aligned_ip6_hdr *); |
46445c63 EC |
954 | uint16_t packet_csum_upperlayer6(const struct ovs_16aligned_ip6_hdr *, |
955 | const void *, uint8_t, uint16_t); | |
370e373b | 956 | |
e60e935b SRCSA |
957 | /* Neighbor Discovery option field. |
958 | * ND options are always a multiple of 8 bytes in size. */ | |
86d46f3c ZKL |
959 | #define ND_LLA_OPT_LEN 8 |
960 | struct ovs_nd_lla_opt { | |
961 | uint8_t type; /* One of ND_OPT_*_LINKADDR. */ | |
962 | uint8_t len; | |
963 | struct eth_addr mac; | |
e60e935b | 964 | }; |
86d46f3c | 965 | BUILD_ASSERT_DECL(ND_LLA_OPT_LEN == sizeof(struct ovs_nd_lla_opt)); |
e60e935b | 966 | |
b24ab67c ZKL |
967 | /* Neighbor Discovery option: Prefix Information. */ |
968 | #define ND_PREFIX_OPT_LEN 32 | |
969 | struct ovs_nd_prefix_opt { | |
970 | uint8_t type; /* ND_OPT_PREFIX_INFORMATION. */ | |
971 | uint8_t len; /* Always 4. */ | |
972 | uint8_t prefix_len; | |
973 | uint8_t la_flags; /* ND_PREFIX_* flags. */ | |
974 | ovs_16aligned_be32 valid_lifetime; | |
975 | ovs_16aligned_be32 preferred_lifetime; | |
976 | ovs_16aligned_be32 reserved; /* Always 0. */ | |
977 | union ovs_16aligned_in6_addr prefix; | |
978 | }; | |
979 | BUILD_ASSERT_DECL(ND_PREFIX_OPT_LEN == sizeof(struct ovs_nd_prefix_opt)); | |
980 | ||
981 | #define ND_PREFIX_ON_LINK 0x80 | |
982 | #define ND_PREFIX_AUTONOMOUS_ADDRESS 0x40 | |
983 | ||
984 | /* Neighbor Discovery option: MTU. */ | |
985 | #define ND_MTU_OPT_LEN 8 | |
4446661a | 986 | #define ND_MTU_DEFAULT 0 |
b24ab67c ZKL |
987 | struct ovs_nd_mtu_opt { |
988 | uint8_t type; /* ND_OPT_MTU */ | |
989 | uint8_t len; /* Always 1. */ | |
990 | ovs_be16 reserved; /* Always 0. */ | |
991 | ovs_16aligned_be32 mtu; | |
992 | }; | |
993 | BUILD_ASSERT_DECL(ND_MTU_OPT_LEN == sizeof(struct ovs_nd_mtu_opt)); | |
994 | ||
e60e935b SRCSA |
995 | /* Like struct nd_msg (from ndisc.h), but whereas that struct requires 32-bit |
996 | * alignment, this one only requires 16-bit alignment. */ | |
997 | #define ND_MSG_LEN 24 | |
998 | struct ovs_nd_msg { | |
999 | struct icmp6_header icmph; | |
29d5e9a7 | 1000 | ovs_16aligned_be32 rso_flags; |
e60e935b | 1001 | union ovs_16aligned_in6_addr target; |
86d46f3c | 1002 | struct ovs_nd_lla_opt options[0]; |
e60e935b SRCSA |
1003 | }; |
1004 | BUILD_ASSERT_DECL(ND_MSG_LEN == sizeof(struct ovs_nd_msg)); | |
1005 | ||
b24ab67c | 1006 | /* Neighbor Discovery packet flags. */ |
fa7f915c JP |
1007 | #define ND_RSO_ROUTER 0x80000000 |
1008 | #define ND_RSO_SOLICITED 0x40000000 | |
1009 | #define ND_RSO_OVERRIDE 0x20000000 | |
1010 | ||
b24ab67c ZKL |
1011 | #define RA_MSG_LEN 16 |
1012 | struct ovs_ra_msg { | |
1013 | struct icmp6_header icmph; | |
1014 | uint8_t cur_hop_limit; | |
1015 | uint8_t mo_flags; /* ND_RA_MANAGED_ADDRESS and ND_RA_OTHER_CONFIG flags. */ | |
1016 | ovs_be16 router_lifetime; | |
1017 | ovs_be32 reachable_time; | |
1018 | ovs_be32 retrans_timer; | |
86d46f3c | 1019 | struct ovs_nd_lla_opt options[0]; |
b24ab67c ZKL |
1020 | }; |
1021 | BUILD_ASSERT_DECL(RA_MSG_LEN == sizeof(struct ovs_ra_msg)); | |
1022 | ||
1023 | #define ND_RA_MANAGED_ADDRESS 0x80 | |
1024 | #define ND_RA_OTHER_CONFIG 0x40 | |
1025 | ||
4446661a MM |
1026 | /* Defaults based on MaxRtrInterval and MinRtrInterval from RFC 4861 section |
1027 | * 6.2.1 | |
1028 | */ | |
1029 | #define ND_RA_MAX_INTERVAL_DEFAULT 600 | |
1030 | ||
1031 | static inline int | |
1032 | nd_ra_min_interval_default(int max) | |
1033 | { | |
1034 | return max >= 9 ? max / 3 : max * 3 / 4; | |
1035 | } | |
1036 | ||
06994f87 TLSC |
1037 | /* |
1038 | * Use the same struct for MLD and MLD2, naming members as the defined fields in | |
1039 | * in the corresponding version of the protocol, though they are reserved in the | |
1040 | * other one. | |
1041 | */ | |
1042 | #define MLD_HEADER_LEN 8 | |
1043 | struct mld_header { | |
1044 | uint8_t type; | |
1045 | uint8_t code; | |
1046 | ovs_be16 csum; | |
1047 | ovs_be16 mrd; | |
1048 | ovs_be16 ngrp; | |
1049 | }; | |
1050 | BUILD_ASSERT_DECL(MLD_HEADER_LEN == sizeof(struct mld_header)); | |
1051 | ||
1052 | #define MLD2_RECORD_LEN 20 | |
1053 | struct mld2_record { | |
1054 | uint8_t type; | |
1055 | uint8_t aux_len; | |
1056 | ovs_be16 nsrcs; | |
1057 | union ovs_16aligned_in6_addr maddr; | |
1058 | }; | |
1059 | BUILD_ASSERT_DECL(MLD2_RECORD_LEN == sizeof(struct mld2_record)); | |
1060 | ||
1061 | #define MLD_QUERY 130 | |
1062 | #define MLD_REPORT 131 | |
1063 | #define MLD_DONE 132 | |
1064 | #define MLD2_REPORT 143 | |
1065 | ||
fa8223b7 JP |
1066 | /* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */ |
1067 | #define IPV6_LABEL_MASK 0x000fffff | |
1068 | ||
3bffc610 BP |
1069 | /* Example: |
1070 | * | |
1071 | * char *string = "1 ::1 2"; | |
1072 | * char ipv6_s[IPV6_SCAN_LEN + 1]; | |
1073 | * struct in6_addr ipv6; | |
1074 | * | |
c2c28dfd | 1075 | * if (ovs_scan(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b) |
3bffc610 BP |
1076 | * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) { |
1077 | * ... | |
1078 | * } | |
1079 | */ | |
1080 | #define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]" | |
1081 | #define IPV6_SCAN_LEN 46 | |
1082 | ||
d31f1109 JP |
1083 | extern const struct in6_addr in6addr_exact; |
1084 | #define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \ | |
1085 | 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } } | |
1086 | ||
06994f87 TLSC |
1087 | extern const struct in6_addr in6addr_all_hosts; |
1088 | #define IN6ADDR_ALL_HOSTS_INIT { { { 0xff,0x02,0x00,0x00,0x00,0x00,0x00,0x00, \ | |
1089 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01 } } } | |
1090 | ||
b24ab67c ZKL |
1091 | extern const struct in6_addr in6addr_all_routers; |
1092 | #define IN6ADDR_ALL_ROUTERS_INIT { { { 0xff,0x02,0x00,0x00,0x00,0x00,0x00,0x00, \ | |
1093 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02 } } } | |
1094 | ||
d31f1109 JP |
1095 | static inline bool ipv6_addr_equals(const struct in6_addr *a, |
1096 | const struct in6_addr *b) | |
1097 | { | |
1098 | #ifdef IN6_ARE_ADDR_EQUAL | |
1099 | return IN6_ARE_ADDR_EQUAL(a, b); | |
1100 | #else | |
1101 | return !memcmp(a, b, sizeof(*a)); | |
1102 | #endif | |
1103 | } | |
1104 | ||
33ac3c83 | 1105 | /* Checks the IPv6 address in 'mask' for all zeroes. */ |
d31f1109 JP |
1106 | static inline bool ipv6_mask_is_any(const struct in6_addr *mask) { |
1107 | return ipv6_addr_equals(mask, &in6addr_any); | |
1108 | } | |
1109 | ||
1110 | static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) { | |
1111 | return ipv6_addr_equals(mask, &in6addr_exact); | |
1112 | } | |
1113 | ||
06994f87 TLSC |
1114 | static inline bool ipv6_is_all_hosts(const struct in6_addr *addr) { |
1115 | return ipv6_addr_equals(addr, &in6addr_all_hosts); | |
1116 | } | |
1117 | ||
8c46162b JB |
1118 | static inline bool ipv6_addr_is_set(const struct in6_addr *addr) { |
1119 | return !ipv6_addr_equals(addr, &in6addr_any); | |
1120 | } | |
1121 | ||
1122 | static inline bool ipv6_addr_is_multicast(const struct in6_addr *ip) { | |
1123 | return ip->s6_addr[0] == 0xff; | |
1124 | } | |
1125 | ||
12d0ee08 BP |
1126 | static inline struct in6_addr |
1127 | in6_addr_mapped_ipv4(ovs_be32 ip4) | |
1128 | { | |
274cd1f1 YHW |
1129 | struct in6_addr ip6; |
1130 | memset(&ip6, 0, sizeof(ip6)); | |
1131 | ip6.s6_addr[10] = 0xff, ip6.s6_addr[11] = 0xff; | |
12d0ee08 BP |
1132 | memcpy(&ip6.s6_addr[12], &ip4, 4); |
1133 | return ip6; | |
1134 | } | |
1135 | ||
754c1feb | 1136 | static inline void |
12d0ee08 | 1137 | in6_addr_set_mapped_ipv4(struct in6_addr *ip6, ovs_be32 ip4) |
754c1feb | 1138 | { |
12d0ee08 | 1139 | *ip6 = in6_addr_mapped_ipv4(ip4); |
754c1feb TLSC |
1140 | } |
1141 | ||
1142 | static inline ovs_be32 | |
1143 | in6_addr_get_mapped_ipv4(const struct in6_addr *addr) | |
1144 | { | |
8bfc3c10 SS |
1145 | union ovs_16aligned_in6_addr *taddr = |
1146 | (union ovs_16aligned_in6_addr *) addr; | |
754c1feb TLSC |
1147 | if (IN6_IS_ADDR_V4MAPPED(addr)) { |
1148 | return get_16aligned_be32(&taddr->be32[3]); | |
1149 | } else { | |
1150 | return INADDR_ANY; | |
1151 | } | |
1152 | } | |
1153 | ||
c2b878e0 TLSC |
1154 | static inline void |
1155 | in6_addr_solicited_node(struct in6_addr *addr, const struct in6_addr *ip6) | |
1156 | { | |
8bfc3c10 SS |
1157 | union ovs_16aligned_in6_addr *taddr = |
1158 | (union ovs_16aligned_in6_addr *) addr; | |
c2b878e0 TLSC |
1159 | memset(taddr->be16, 0, sizeof(taddr->be16)); |
1160 | taddr->be16[0] = htons(0xff02); | |
1161 | taddr->be16[5] = htons(0x1); | |
1162 | taddr->be16[6] = htons(0xff00); | |
1163 | memcpy(&addr->s6_addr[13], &ip6->s6_addr[13], 3); | |
1164 | } | |
1165 | ||
7cc0741e NS |
1166 | /* |
1167 | * Generates ipv6 EUI64 address from the given eth addr | |
1168 | * and prefix and stores it in 'lla' | |
1169 | */ | |
1170 | static inline void | |
1171 | in6_generate_eui64(struct eth_addr ea, struct in6_addr *prefix, | |
1172 | struct in6_addr *lla) | |
1173 | { | |
8bfc3c10 SS |
1174 | union ovs_16aligned_in6_addr *taddr = |
1175 | (union ovs_16aligned_in6_addr *) lla; | |
1176 | union ovs_16aligned_in6_addr *prefix_taddr = | |
1177 | (union ovs_16aligned_in6_addr *) prefix; | |
7cc0741e NS |
1178 | taddr->be16[0] = prefix_taddr->be16[0]; |
1179 | taddr->be16[1] = prefix_taddr->be16[1]; | |
1180 | taddr->be16[2] = prefix_taddr->be16[2]; | |
1181 | taddr->be16[3] = prefix_taddr->be16[3]; | |
1182 | taddr->be16[4] = htons(((ea.ea[0] ^ 0x02) << 8) | ea.ea[1]); | |
1183 | taddr->be16[5] = htons(ea.ea[2] << 8 | 0x00ff); | |
1184 | taddr->be16[6] = htons(0xfe << 8 | ea.ea[3]); | |
1185 | taddr->be16[7] = ea.be16[2]; | |
1186 | } | |
1187 | ||
685f4dfe NS |
1188 | /* |
1189 | * Generates ipv6 link local address from the given eth addr | |
1190 | * with prefix 'fe80::/64' and stores it in 'lla' | |
1191 | */ | |
1192 | static inline void | |
1193 | in6_generate_lla(struct eth_addr ea, struct in6_addr *lla) | |
1194 | { | |
8bfc3c10 SS |
1195 | union ovs_16aligned_in6_addr *taddr = |
1196 | (union ovs_16aligned_in6_addr *) lla; | |
685f4dfe NS |
1197 | memset(taddr->be16, 0, sizeof(taddr->be16)); |
1198 | taddr->be16[0] = htons(0xfe80); | |
1199 | taddr->be16[4] = htons(((ea.ea[0] ^ 0x02) << 8) | ea.ea[1]); | |
1200 | taddr->be16[5] = htons(ea.ea[2] << 8 | 0x00ff); | |
1201 | taddr->be16[6] = htons(0xfe << 8 | ea.ea[3]); | |
1202 | taddr->be16[7] = ea.be16[2]; | |
1203 | } | |
1204 | ||
6d1a4f16 JP |
1205 | /* Returns true if 'addr' is a link local address. Otherwise, false. */ |
1206 | static inline bool | |
1207 | in6_is_lla(struct in6_addr *addr) | |
1208 | { | |
1209 | #ifdef s6_addr32 | |
1210 | return addr->s6_addr32[0] == htonl(0xfe800000) && !(addr->s6_addr32[1]); | |
1211 | #else | |
bf32e3e2 JP |
1212 | return addr->s6_addr[0] == 0xfe && addr->s6_addr[1] == 0x80 && |
1213 | !(addr->s6_addr[2] | addr->s6_addr[3] | addr->s6_addr[4] | | |
1214 | addr->s6_addr[5] | addr->s6_addr[6] | addr->s6_addr[7]); | |
6d1a4f16 JP |
1215 | #endif |
1216 | } | |
1217 | ||
c2b878e0 TLSC |
1218 | static inline void |
1219 | ipv6_multicast_to_ethernet(struct eth_addr *eth, const struct in6_addr *ip6) | |
1220 | { | |
1221 | eth->ea[0] = 0x33; | |
1222 | eth->ea[1] = 0x33; | |
1223 | eth->ea[2] = ip6->s6_addr[12]; | |
1224 | eth->ea[3] = ip6->s6_addr[13]; | |
1225 | eth->ea[4] = ip6->s6_addr[14]; | |
1226 | eth->ea[5] = ip6->s6_addr[15]; | |
1227 | } | |
1228 | ||
e8c16d83 SH |
1229 | static inline bool dl_type_is_ip_any(ovs_be16 dl_type) |
1230 | { | |
1231 | return dl_type == htons(ETH_TYPE_IP) | |
1232 | || dl_type == htons(ETH_TYPE_IPV6); | |
1233 | } | |
1234 | ||
a36de779 | 1235 | /* Tunnel header */ |
e5a1caee | 1236 | |
a36de779 PS |
1237 | /* GRE protocol header */ |
1238 | struct gre_base_hdr { | |
1239 | ovs_be16 flags; | |
1240 | ovs_be16 protocol; | |
1241 | }; | |
1242 | ||
1243 | #define GRE_CSUM 0x8000 | |
1244 | #define GRE_ROUTING 0x4000 | |
1245 | #define GRE_KEY 0x2000 | |
1246 | #define GRE_SEQ 0x1000 | |
1247 | #define GRE_STRICT 0x0800 | |
1248 | #define GRE_REC 0x0700 | |
1249 | #define GRE_FLAGS 0x00F8 | |
1250 | #define GRE_VERSION 0x0007 | |
1251 | ||
7dc18ae9 WT |
1252 | /* |
1253 | * ERSPAN protocol header and metadata | |
1254 | * | |
1255 | * Version 1 (Type II) header (8 octets [42:49]) | |
1256 | * 0 1 2 3 | |
1257 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
1258 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1259 | * | Ver | VLAN | COS | En|T| Session ID | | |
1260 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1261 | * | Reserved | Index | | |
1262 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1263 | * | |
1264 | * | |
1265 | * ERSPAN Version 2 (Type III) header (12 octets [42:49]) | |
1266 | * 0 1 2 3 | |
1267 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
1268 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1269 | * | Ver | VLAN | COS |BSO|T| Session ID | | |
1270 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1271 | * | Timestamp | | |
1272 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1273 | * | SGT |P| FT | Hw ID |D|Gra|O| | |
1274 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1275 | * | |
1276 | */ | |
1277 | ||
1278 | /* ERSPAN has fixed 8-byte GRE header */ | |
1279 | #define ERSPAN_GREHDR_LEN 8 | |
1280 | #define ERSPAN_HDR(gre_base_hdr) \ | |
1281 | ((struct erspan_base_hdr *)((char *)gre_base_hdr + ERSPAN_GREHDR_LEN)) | |
1282 | ||
1283 | #define ERSPAN_V1_MDSIZE 4 | |
1284 | #define ERSPAN_V2_MDSIZE 8 | |
1285 | ||
1286 | #define ERSPAN_SID_MASK 0x03ff /* 10-bit Session ID. */ | |
1287 | #define ERSPAN_IDX_MASK 0xfffff /* v1 Index */ | |
1288 | #define ERSPAN_HWID_MASK 0x03f0 | |
1289 | #define ERSPAN_DIR_MASK 0x0008 | |
1290 | ||
1291 | struct erspan_base_hdr { | |
1292 | uint8_t vlan_upper:4, | |
1293 | ver:4; | |
1294 | uint8_t vlan:8; | |
1295 | uint8_t session_id_upper:2, | |
1296 | t:1, | |
1297 | en:2, | |
1298 | cos:3; | |
1299 | uint8_t session_id:8; | |
1300 | }; | |
1301 | ||
1302 | struct erspan_md2 { | |
1303 | ovs_16aligned_be32 timestamp; | |
1304 | ovs_be16 sgt; | |
1305 | uint8_t hwid_upper:2, | |
1306 | ft:5, | |
1307 | p:1; | |
1308 | uint8_t o:1, | |
1309 | gra:2, | |
1310 | dir:1, | |
1311 | hwid:4; | |
1312 | }; | |
1313 | ||
1314 | struct erspan_metadata { | |
1315 | int version; | |
1316 | union { | |
1317 | ovs_be32 index; /* Version 1 (type II)*/ | |
1318 | struct erspan_md2 md2; /* Version 2 (type III) */ | |
1319 | } u; | |
1320 | }; | |
1321 | ||
1322 | static inline uint16_t get_sid(const struct erspan_base_hdr *ershdr) | |
1323 | { | |
1324 | return (ershdr->session_id_upper << 8) + ershdr->session_id; | |
1325 | } | |
1326 | ||
1327 | static inline void set_sid(struct erspan_base_hdr *ershdr, uint16_t id) | |
1328 | { | |
1329 | ershdr->session_id = id & 0xff; | |
1330 | ershdr->session_id_upper = (id >> 8) &0x3; | |
1331 | } | |
1332 | ||
1333 | static inline uint8_t get_hwid(const struct erspan_md2 *md2) | |
1334 | { | |
1335 | return (md2->hwid_upper << 4) + md2->hwid; | |
1336 | } | |
1337 | ||
1338 | static inline void set_hwid(struct erspan_md2 *md2, uint8_t hwid) | |
1339 | { | |
1340 | md2->hwid = hwid & 0xf; | |
1341 | md2->hwid_upper = (hwid >> 4) & 0x3; | |
1342 | } | |
1343 | ||
1344 | /* ERSPAN timestamp granularity | |
1345 | * 00b --> granularity = 100 microseconds | |
1346 | * 01b --> granularity = 100 nanoseconds | |
1347 | * 10b --> granularity = IEEE 1588 | |
1348 | * Here we only support 100 microseconds. | |
1349 | */ | |
1350 | enum erspan_ts_gra { | |
1351 | ERSPAN_100US, | |
1352 | ERSPAN_100NS, | |
1353 | ERSPAN_IEEE1588, | |
1354 | }; | |
1355 | ||
1356 | static inline ovs_be32 get_erspan_ts(enum erspan_ts_gra gra) | |
1357 | { | |
1358 | ovs_be32 ts = 0; | |
1359 | ||
1360 | switch (gra) { | |
1361 | case ERSPAN_100US: | |
1362 | ts = htonl((uint32_t)(time_wall_usec() / 100)); | |
1363 | break; | |
1364 | case ERSPAN_100NS: | |
1365 | /* fall back */ | |
1366 | case ERSPAN_IEEE1588: | |
1367 | /* fall back */ | |
1368 | default: | |
1369 | OVS_NOT_REACHED(); | |
1370 | break; | |
1371 | } | |
1372 | return ts; | |
1373 | } | |
1374 | ||
a36de779 PS |
1375 | /* VXLAN protocol header */ |
1376 | struct vxlanhdr { | |
439f39cb GS |
1377 | union { |
1378 | ovs_16aligned_be32 vx_flags; /* VXLAN flags. */ | |
1379 | struct { | |
1380 | uint8_t flags; /* VXLAN GPE flags. */ | |
1381 | uint8_t reserved[2]; /* 16 bits reserved. */ | |
1382 | uint8_t next_protocol; /* Next Protocol field for VXLAN GPE. */ | |
1383 | } vx_gpe; | |
1384 | }; | |
a36de779 PS |
1385 | ovs_16aligned_be32 vx_vni; |
1386 | }; | |
439f39cb | 1387 | BUILD_ASSERT_DECL(sizeof(struct vxlanhdr) == 8); |
a36de779 PS |
1388 | |
1389 | #define VXLAN_FLAGS 0x08000000 /* struct vxlanhdr.vx_flags required value. */ | |
1390 | ||
439f39cb GS |
1391 | /* |
1392 | * VXLAN Generic Protocol Extension (VXLAN_F_GPE): | |
1393 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1394 | * |R|R|Ver|I|P|R|O| Reserved |Next Protocol | | |
1395 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1396 | * | VXLAN Network Identifier (VNI) | Reserved | | |
1397 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1398 | * | |
1399 | * Ver = Version. Indicates VXLAN GPE protocol version. | |
1400 | * | |
1401 | * P = Next Protocol Bit. The P bit is set to indicate that the | |
1402 | * Next Protocol field is present. | |
1403 | * | |
1404 | * O = OAM Flag Bit. The O bit is set to indicate that the packet | |
1405 | * is an OAM packet. | |
1406 | * | |
1407 | * Next Protocol = This 8 bit field indicates the protocol header | |
1408 | * immediately following the VXLAN GPE header. | |
1409 | * | |
1410 | * https://tools.ietf.org/html/draft-ietf-nvo3-vxlan-gpe-01 | |
1411 | */ | |
1412 | ||
1413 | /* Fields in struct vxlanhdr.vx_gpe.flags */ | |
1414 | #define VXLAN_GPE_FLAGS_VER 0x30 /* Version. */ | |
1415 | #define VLXAN_GPE_FLAGS_P 0x04 /* Next Protocol Bit. */ | |
1416 | #define VXLAN_GPE_FLAGS_O 0x01 /* OAM Bit. */ | |
1417 | ||
1418 | /* VXLAN-GPE header flags. */ | |
1419 | #define VXLAN_HF_VER ((1U <<29) | (1U <<28)) | |
1420 | #define VXLAN_HF_NP (1U <<26) | |
1421 | #define VXLAN_HF_OAM (1U <<24) | |
1422 | ||
1423 | #define VXLAN_GPE_USED_BITS (VXLAN_HF_VER | VXLAN_HF_NP | VXLAN_HF_OAM | \ | |
1424 | 0xff) | |
1425 | ||
1426 | /* VXLAN-GPE header Next Protocol. */ | |
1427 | #define VXLAN_GPE_NP_IPV4 0x01 | |
1428 | #define VXLAN_GPE_NP_IPV6 0x02 | |
1429 | #define VXLAN_GPE_NP_ETHERNET 0x03 | |
1430 | #define VXLAN_GPE_NP_NSH 0x04 | |
1431 | ||
1432 | #define VXLAN_F_GPE 0x4000 | |
1433 | #define VXLAN_HF_GPE 0x04000000 | |
1434 | ||
2482b0b0 JS |
1435 | /* Input values for PACKET_TYPE macros have to be in host byte order. |
1436 | * The _BE postfix indicates result is in network byte order. Otherwise result | |
1437 | * is in host byte order. */ | |
1438 | #define PACKET_TYPE(NS, NS_TYPE) ((uint32_t) ((NS) << 16 | (NS_TYPE))) | |
1439 | #define PACKET_TYPE_BE(NS, NS_TYPE) (htonl((NS) << 16 | (NS_TYPE))) | |
1440 | ||
1441 | /* Returns the host byte ordered namespace of 'packet type'. */ | |
1442 | static inline uint16_t | |
1443 | pt_ns(ovs_be32 packet_type) | |
1444 | { | |
1445 | return ntohl(packet_type) >> 16; | |
1446 | } | |
1447 | ||
1448 | /* Returns the network byte ordered namespace type of 'packet type'. */ | |
1449 | static inline ovs_be16 | |
1450 | pt_ns_type_be(ovs_be32 packet_type) | |
1451 | { | |
1452 | return be32_to_be16(packet_type); | |
1453 | } | |
1454 | ||
1455 | /* Returns the host byte ordered namespace type of 'packet type'. */ | |
1456 | static inline uint16_t | |
1457 | pt_ns_type(ovs_be32 packet_type) | |
1458 | { | |
1459 | return ntohs(pt_ns_type_be(packet_type)); | |
1460 | } | |
1461 | ||
1462 | /* Well-known packet_type field values. */ | |
1463 | enum packet_type { | |
f839892a JS |
1464 | PT_ETH = PACKET_TYPE(OFPHTN_ONF, 0x0000), /* Default PT: Ethernet */ |
1465 | PT_USE_NEXT_PROTO = PACKET_TYPE(OFPHTN_ONF, 0xfffe), /* Pseudo PT for decap. */ | |
2482b0b0 JS |
1466 | PT_IPV4 = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_IP), |
1467 | PT_IPV6 = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_IPV6), | |
1468 | PT_MPLS = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_MPLS), | |
1469 | PT_MPLS_MC = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_MPLS_MCAST), | |
3d2fbd70 | 1470 | PT_NSH = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_NSH), |
2482b0b0 JS |
1471 | PT_UNKNOWN = PACKET_TYPE(0xffff, 0xffff), /* Unknown packet type. */ |
1472 | }; | |
1473 | ||
1474 | ||
ac6d120f | 1475 | void ipv6_format_addr(const struct in6_addr *addr, struct ds *); |
9ac0aada JR |
1476 | void ipv6_format_addr_bracket(const struct in6_addr *addr, struct ds *, |
1477 | bool bracket); | |
ac6d120f JP |
1478 | void ipv6_format_mapped(const struct in6_addr *addr, struct ds *); |
1479 | void ipv6_format_masked(const struct in6_addr *addr, | |
1480 | const struct in6_addr *mask, struct ds *); | |
bed610e8 | 1481 | const char * ipv6_string_mapped(char *addr_str, const struct in6_addr *addr); |
d31f1109 JP |
1482 | struct in6_addr ipv6_addr_bitand(const struct in6_addr *src, |
1483 | const struct in6_addr *mask); | |
b0ad27f3 JP |
1484 | struct in6_addr ipv6_addr_bitxor(const struct in6_addr *a, |
1485 | const struct in6_addr *b); | |
1486 | bool ipv6_is_zero(const struct in6_addr *a); | |
d31f1109 JP |
1487 | struct in6_addr ipv6_create_mask(int mask); |
1488 | int ipv6_count_cidr_bits(const struct in6_addr *netmask); | |
1489 | bool ipv6_is_cidr(const struct in6_addr *netmask); | |
2b02db1b BP |
1490 | |
1491 | bool ipv6_parse(const char *s, struct in6_addr *ip); | |
fac5bd3c JP |
1492 | char *ipv6_parse_masked(const char *s, struct in6_addr *ipv6, |
1493 | struct in6_addr *mask); | |
2b02db1b BP |
1494 | char *ipv6_parse_cidr(const char *s, struct in6_addr *ip, unsigned int *plen) |
1495 | OVS_WARN_UNUSED_RESULT; | |
7dc88496 NS |
1496 | char *ipv6_parse_masked_len(const char *s, int *n, struct in6_addr *ipv6, |
1497 | struct in6_addr *mask); | |
1498 | char *ipv6_parse_cidr_len(const char *s, int *n, struct in6_addr *ip, | |
1499 | unsigned int *plen) | |
1500 | OVS_WARN_UNUSED_RESULT; | |
d31f1109 | 1501 | |
74ff3298 JR |
1502 | void *eth_compose(struct dp_packet *, const struct eth_addr eth_dst, |
1503 | const struct eth_addr eth_src, uint16_t eth_type, | |
5de1bb5c | 1504 | size_t size); |
74ff3298 JR |
1505 | void *snap_compose(struct dp_packet *, const struct eth_addr eth_dst, |
1506 | const struct eth_addr eth_src, | |
5de1bb5c | 1507 | unsigned int oui, uint16_t snap_type, size_t size); |
cf62fa4c | 1508 | void packet_set_ipv4(struct dp_packet *, ovs_be32 src, ovs_be32 dst, uint8_t tos, |
c97664b3 | 1509 | uint8_t ttl); |
fc052306 ZB |
1510 | void packet_set_ipv4_addr(struct dp_packet *packet, ovs_16aligned_be32 *addr, |
1511 | ovs_be32 new_addr); | |
932c96b7 JR |
1512 | void packet_set_ipv6(struct dp_packet *, const struct in6_addr *src, |
1513 | const struct in6_addr *dst, uint8_t tc, | |
038341d1 | 1514 | ovs_be32 fl, uint8_t hlmit); |
0e29d884 DB |
1515 | void packet_set_ipv6_addr(struct dp_packet *packet, uint8_t proto, |
1516 | ovs_16aligned_be32 addr[4], | |
1517 | const struct in6_addr *new_addr, | |
1518 | bool recalculate_csum); | |
cf62fa4c PS |
1519 | void packet_set_tcp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst); |
1520 | void packet_set_udp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst); | |
1521 | void packet_set_sctp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst); | |
b8786b18 | 1522 | void packet_set_icmp(struct dp_packet *, uint8_t type, uint8_t code); |
932c96b7 | 1523 | void packet_set_nd(struct dp_packet *, const struct in6_addr *target, |
74ff3298 | 1524 | const struct eth_addr sll, const struct eth_addr tll); |
40f78b38 | 1525 | |
a66733a8 | 1526 | void packet_format_tcp_flags(struct ds *, uint16_t); |
61bf6666 | 1527 | const char *packet_tcp_flag_to_string(uint32_t flag); |
6335d074 | 1528 | void compose_arp__(struct dp_packet *); |
eb0b295e | 1529 | void compose_arp(struct dp_packet *, uint16_t arp_op, |
74ff3298 JR |
1530 | const struct eth_addr arp_sha, |
1531 | const struct eth_addr arp_tha, bool broadcast, | |
eb0b295e | 1532 | ovs_be32 arp_spa, ovs_be32 arp_tpa); |
16187903 JP |
1533 | void compose_nd_ns(struct dp_packet *, const struct eth_addr eth_src, |
1534 | const struct in6_addr *ipv6_src, | |
1535 | const struct in6_addr *ipv6_dst); | |
1536 | void compose_nd_na(struct dp_packet *, const struct eth_addr eth_src, | |
1537 | const struct eth_addr eth_dst, | |
1538 | const struct in6_addr *ipv6_src, | |
1539 | const struct in6_addr *ipv6_dst, | |
1540 | ovs_be32 rso_flags); | |
b24ab67c ZKL |
1541 | void compose_nd_ra(struct dp_packet *, |
1542 | const struct eth_addr eth_src, | |
1543 | const struct eth_addr eth_dst, | |
1544 | const struct in6_addr *ipv6_src, | |
1545 | const struct in6_addr *ipv6_dst, | |
1546 | uint8_t cur_hop_limit, uint8_t mo_flags, | |
1547 | ovs_be16 router_lt, ovs_be32 reachable_time, | |
4446661a | 1548 | ovs_be32 retrans_timer, uint32_t mtu); |
b24ab67c ZKL |
1549 | void packet_put_ra_prefix_opt(struct dp_packet *, |
1550 | uint8_t plen, uint8_t la_flags, | |
1551 | ovs_be32 valid_lifetime, | |
1552 | ovs_be32 preferred_lifetime, | |
1553 | const ovs_be128 router_prefix); | |
0292a0c9 | 1554 | uint32_t packet_csum_pseudoheader(const struct ip_header *); |
1bc3f0ed | 1555 | void IP_ECN_set_ce(struct dp_packet *pkt, bool is_ipv6); |
12113c39 | 1556 | |
ea991ad2 NS |
1557 | #define DNS_HEADER_LEN 12 |
1558 | struct dns_header { | |
1559 | ovs_be16 id; | |
1560 | uint8_t lo_flag; /* QR (1), OPCODE (4), AA (1), TC (1) and RD (1) */ | |
1561 | uint8_t hi_flag; /* RA (1), Z (3) and RCODE (4) */ | |
1562 | ovs_be16 qdcount; /* Num of entries in the question section. */ | |
1563 | ovs_be16 ancount; /* Num of resource records in the answer section. */ | |
1564 | ||
1565 | /* Num of name server records in the authority record section. */ | |
1566 | ovs_be16 nscount; | |
1567 | ||
1568 | /* Num of resource records in the additional records section. */ | |
1569 | ovs_be16 arcount; | |
1570 | }; | |
1571 | ||
1572 | BUILD_ASSERT_DECL(DNS_HEADER_LEN == sizeof(struct dns_header)); | |
1573 | ||
1574 | #define DNS_QUERY_TYPE_A 0x01 | |
1575 | #define DNS_QUERY_TYPE_AAAA 0x1c | |
1576 | #define DNS_QUERY_TYPE_ANY 0xff | |
1577 | ||
1578 | #define DNS_CLASS_IN 0x01 | |
1579 | #define DNS_DEFAULT_RR_TTL 3600 | |
1580 | ||
064af421 | 1581 | #endif /* packets.h */ |