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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 BP |
34 | #include "util.h" |
35 | ||
cf62fa4c | 36 | struct dp_packet; |
d31f1109 | 37 | struct ds; |
b9e8b45a | 38 | |
59781952 JR |
39 | /* Purely internal to OVS userspace. These flags should never be exposed to |
40 | * the outside world and so aren't included in the flags mask. */ | |
41 | ||
42 | /* Tunnel information is in userspace datapath format. */ | |
43 | #define FLOW_TNL_F_UDPIF (1 << 4) | |
44 | ||
ffe4c74f JB |
45 | static inline bool ipv6_addr_is_set(const struct in6_addr *addr); |
46 | ||
47 | static inline bool | |
48 | flow_tnl_dst_is_set(const struct flow_tnl *tnl) | |
49 | { | |
50 | return tnl->ip_dst || ipv6_addr_is_set(&tnl->ipv6_dst); | |
51 | } | |
52 | ||
53 | struct in6_addr flow_tnl_dst(const struct flow_tnl *tnl); | |
54 | struct in6_addr flow_tnl_src(const struct flow_tnl *tnl); | |
55 | ||
59781952 JR |
56 | /* Returns an offset to 'src' covering all the meaningful fields in 'src'. */ |
57 | static inline size_t | |
58 | flow_tnl_size(const struct flow_tnl *src) | |
59 | { | |
ffe4c74f JB |
60 | if (!flow_tnl_dst_is_set(src)) { |
61 | /* Covers ip_dst and ipv6_dst only. */ | |
59781952 JR |
62 | return offsetof(struct flow_tnl, ip_src); |
63 | } | |
64 | if (src->flags & FLOW_TNL_F_UDPIF) { | |
65 | /* Datapath format, cover all options we have. */ | |
66 | return offsetof(struct flow_tnl, metadata.opts) | |
67 | + src->metadata.present.len; | |
68 | } | |
69 | if (!src->metadata.present.map) { | |
70 | /* No TLVs, opts is irrelevant. */ | |
71 | return offsetof(struct flow_tnl, metadata.opts); | |
72 | } | |
73 | /* Have decoded TLVs, opts is relevant. */ | |
74 | return sizeof *src; | |
75 | } | |
76 | ||
77 | /* Copy flow_tnl, but avoid copying unused portions of tun_metadata. Unused | |
78 | * data in 'dst' is NOT cleared, so this must not be used in cases where the | |
79 | * uninitialized portion may be hashed over. */ | |
80 | static inline void | |
81 | flow_tnl_copy__(struct flow_tnl *dst, const struct flow_tnl *src) | |
82 | { | |
83 | memcpy(dst, src, flow_tnl_size(src)); | |
84 | } | |
85 | ||
86 | static inline bool | |
87 | flow_tnl_equal(const struct flow_tnl *a, const struct flow_tnl *b) | |
88 | { | |
89 | size_t a_size = flow_tnl_size(a); | |
90 | ||
91 | return a_size == flow_tnl_size(b) && !memcmp(a, b, a_size); | |
92 | } | |
93 | ||
758c456d JR |
94 | /* Datapath packet metadata */ |
95 | struct pkt_metadata { | |
99fc16c0 | 96 | PADDED_MEMBERS_CACHELINE_MARKER(CACHE_LINE_SIZE, cacheline0, |
572f732a AZ |
97 | uint32_t recirc_id; /* Recirculation id carried with the |
98 | recirculating packets. 0 for packets | |
99 | received from the wire. */ | |
100 | uint32_t dp_hash; /* hash value computed by the recirculation | |
101 | action. */ | |
758c456d JR |
102 | uint32_t skb_priority; /* Packet priority for QoS. */ |
103 | uint32_t pkt_mark; /* Packet mark. */ | |
2a28ccc8 | 104 | uint8_t ct_state; /* Connection state. */ |
daf4d3c1 | 105 | bool ct_orig_tuple_ipv6; |
07659514 | 106 | uint16_t ct_zone; /* Connection zone. */ |
8e53fe8c | 107 | uint32_t ct_mark; /* Connection mark. */ |
9daf2348 | 108 | ovs_u128 ct_label; /* Connection label. */ |
99fc16c0 BB |
109 | union flow_in_port in_port; /* Input port. */ |
110 | ); | |
111 | ||
112 | PADDED_MEMBERS_CACHELINE_MARKER(CACHE_LINE_SIZE, cacheline1, | |
daf4d3c1 JR |
113 | union { /* Populated only for non-zero 'ct_state'. */ |
114 | struct ovs_key_ct_tuple_ipv4 ipv4; | |
115 | struct ovs_key_ct_tuple_ipv6 ipv6; /* Used only if */ | |
116 | } ct_orig_tuple; /* 'ct_orig_tuple_ipv6' is set */ | |
99fc16c0 BB |
117 | ); |
118 | ||
119 | PADDED_MEMBERS_CACHELINE_MARKER(CACHE_LINE_SIZE, cacheline2, | |
59781952 JR |
120 | struct flow_tnl tunnel; /* Encapsulating tunnel parameters. Note that |
121 | * if 'ip_dst' == 0, the rest of the fields may | |
122 | * be uninitialized. */ | |
99fc16c0 | 123 | ); |
758c456d JR |
124 | }; |
125 | ||
99fc16c0 BB |
126 | BUILD_ASSERT_DECL(offsetof(struct pkt_metadata, cacheline0) == 0); |
127 | BUILD_ASSERT_DECL(offsetof(struct pkt_metadata, cacheline1) == | |
128 | CACHE_LINE_SIZE); | |
129 | BUILD_ASSERT_DECL(offsetof(struct pkt_metadata, cacheline2) == | |
130 | 2 * CACHE_LINE_SIZE); | |
131 | ||
6b241d64 PS |
132 | static inline void |
133 | pkt_metadata_init_tnl(struct pkt_metadata *md) | |
134 | { | |
135 | /* Zero up through the tunnel metadata options. The length and table | |
136 | * are before this and as long as they are empty, the options won't | |
137 | * be looked at. */ | |
138 | memset(md, 0, offsetof(struct pkt_metadata, tunnel.metadata.opts)); | |
139 | } | |
140 | ||
35303d71 JG |
141 | static inline void |
142 | pkt_metadata_init(struct pkt_metadata *md, odp_port_t port) | |
143 | { | |
af697f26 DDP |
144 | /* This is called for every packet in userspace datapath and affects |
145 | * performance if all the metadata is initialized. Hence, fields should | |
146 | * only be zeroed out when necessary. | |
147 | * | |
148 | * Initialize only till ct_state. Once the ct_state is zeroed out rest | |
149 | * of ct fields will not be looked at unless ct_state != 0. | |
150 | */ | |
151 | memset(md, 0, offsetof(struct pkt_metadata, ct_orig_tuple_ipv6)); | |
152 | ||
35303d71 JG |
153 | /* It can be expensive to zero out all of the tunnel metadata. However, |
154 | * we can just zero out ip_dst and the rest of the data will never be | |
155 | * looked at. */ | |
35303d71 | 156 | md->tunnel.ip_dst = 0; |
ffe4c74f | 157 | md->tunnel.ipv6_dst = in6addr_any; |
35303d71 JG |
158 | md->in_port.odp_port = port; |
159 | } | |
b5e7e61a | 160 | |
a90ed026 DDP |
161 | /* This function prefetches the cachelines touched by pkt_metadata_init() |
162 | * For performance reasons the two functions should be kept in sync. */ | |
163 | static inline void | |
164 | pkt_metadata_prefetch_init(struct pkt_metadata *md) | |
165 | { | |
99fc16c0 BB |
166 | /* Prefetch cacheline0 as members till ct_state and odp_port will |
167 | * be initialized later in pkt_metadata_init(). */ | |
168 | OVS_PREFETCH(md->cacheline0); | |
169 | ||
170 | /* Prefetch cachline2 as ip_dst & ipv6_dst fields will be initialized. */ | |
171 | OVS_PREFETCH(md->cacheline2); | |
a90ed026 DDP |
172 | } |
173 | ||
76343538 BP |
174 | bool dpid_from_string(const char *s, uint64_t *dpidp); |
175 | ||
064af421 BP |
176 | #define ETH_ADDR_LEN 6 |
177 | ||
74ff3298 | 178 | static const struct eth_addr eth_addr_broadcast OVS_UNUSED |
134fefa4 | 179 | = ETH_ADDR_C(ff,ff,ff,ff,ff,ff); |
064af421 | 180 | |
74ff3298 | 181 | static const struct eth_addr eth_addr_exact OVS_UNUSED |
134fefa4 | 182 | = ETH_ADDR_C(ff,ff,ff,ff,ff,ff); |
eb0b295e | 183 | |
74ff3298 | 184 | static const struct eth_addr eth_addr_zero OVS_UNUSED |
134fefa4 | 185 | = ETH_ADDR_C(00,00,00,00,00,00); |
b2342f7a | 186 | static const struct eth_addr64 eth_addr64_zero OVS_UNUSED |
134fefa4 | 187 | = ETH_ADDR64_C(00,00,00,00,00,00,00,00); |
ba186119 | 188 | |
74ff3298 | 189 | static const struct eth_addr eth_addr_stp OVS_UNUSED |
134fefa4 | 190 | = ETH_ADDR_C(01,80,c2,00,00,00); |
c25c91fd | 191 | |
74ff3298 | 192 | static const struct eth_addr eth_addr_lacp OVS_UNUSED |
134fefa4 | 193 | = ETH_ADDR_C(01,80,c2,00,00,02); |
de8d2ef9 | 194 | |
74ff3298 | 195 | static const struct eth_addr eth_addr_bfd OVS_UNUSED |
134fefa4 | 196 | = ETH_ADDR_C(00,23,20,00,00,01); |
74ff3298 JR |
197 | |
198 | static inline bool eth_addr_is_broadcast(const struct eth_addr a) | |
064af421 | 199 | { |
74ff3298 | 200 | return (a.be16[0] & a.be16[1] & a.be16[2]) == htons(0xffff); |
064af421 BP |
201 | } |
202 | ||
74ff3298 | 203 | static inline bool eth_addr_is_multicast(const struct eth_addr a) |
064af421 | 204 | { |
74ff3298 | 205 | return a.ea[0] & 1; |
064af421 | 206 | } |
74ff3298 JR |
207 | |
208 | static inline bool eth_addr_is_local(const struct eth_addr a) | |
064af421 | 209 | { |
70150daf JG |
210 | /* Local if it is either a locally administered address or a Nicira random |
211 | * address. */ | |
74ff3298 JR |
212 | return a.ea[0] & 2 |
213 | || (a.be16[0] == htons(0x0023) | |
214 | && (a.be16[1] & htons(0xff80)) == htons(0x2080)); | |
064af421 | 215 | } |
74ff3298 | 216 | static inline bool eth_addr_is_zero(const struct eth_addr a) |
064af421 | 217 | { |
74ff3298 | 218 | return !(a.be16[0] | a.be16[1] | a.be16[2]); |
064af421 | 219 | } |
b2342f7a BP |
220 | static inline bool eth_addr64_is_zero(const struct eth_addr64 a) |
221 | { | |
222 | return !(a.be16[0] | a.be16[1] | a.be16[2] | a.be16[3]); | |
223 | } | |
3b4d8ad3 | 224 | |
74ff3298 | 225 | static inline int eth_mask_is_exact(const struct eth_addr a) |
3b4d8ad3 | 226 | { |
74ff3298 | 227 | return (a.be16[0] & a.be16[1] & a.be16[2]) == htons(0xffff); |
3b4d8ad3 JS |
228 | } |
229 | ||
74ff3298 JR |
230 | static inline int eth_addr_compare_3way(const struct eth_addr a, |
231 | const struct eth_addr b) | |
130f6e5f | 232 | { |
74ff3298 | 233 | return memcmp(&a, &b, sizeof a); |
130f6e5f | 234 | } |
b2342f7a BP |
235 | static inline int eth_addr64_compare_3way(const struct eth_addr64 a, |
236 | const struct eth_addr64 b) | |
237 | { | |
238 | return memcmp(&a, &b, sizeof a); | |
239 | } | |
74ff3298 JR |
240 | |
241 | static inline bool eth_addr_equals(const struct eth_addr a, | |
242 | const struct eth_addr b) | |
064af421 | 243 | { |
130f6e5f | 244 | return !eth_addr_compare_3way(a, b); |
064af421 | 245 | } |
b2342f7a BP |
246 | static inline bool eth_addr64_equals(const struct eth_addr64 a, |
247 | const struct eth_addr64 b) | |
248 | { | |
249 | return !eth_addr64_compare_3way(a, b); | |
250 | } | |
74ff3298 JR |
251 | |
252 | static inline bool eth_addr_equal_except(const struct eth_addr a, | |
253 | const struct eth_addr b, | |
254 | const struct eth_addr mask) | |
3b4d8ad3 | 255 | { |
74ff3298 JR |
256 | return !(((a.be16[0] ^ b.be16[0]) & mask.be16[0]) |
257 | || ((a.be16[1] ^ b.be16[1]) & mask.be16[1]) | |
258 | || ((a.be16[2] ^ b.be16[2]) & mask.be16[2])); | |
3b4d8ad3 | 259 | } |
74ff3298 JR |
260 | |
261 | static inline uint64_t eth_addr_to_uint64(const struct eth_addr ea) | |
064af421 | 262 | { |
74ff3298 JR |
263 | return (((uint64_t) ntohs(ea.be16[0]) << 32) |
264 | | ((uint64_t) ntohs(ea.be16[1]) << 16) | |
265 | | ntohs(ea.be16[2])); | |
064af421 | 266 | } |
74ff3298 JR |
267 | |
268 | static inline uint64_t eth_addr_vlan_to_uint64(const struct eth_addr ea, | |
7e36ac42 AZ |
269 | uint16_t vlan) |
270 | { | |
271 | return (((uint64_t)vlan << 48) | eth_addr_to_uint64(ea)); | |
272 | } | |
74ff3298 JR |
273 | |
274 | static inline void eth_addr_from_uint64(uint64_t x, struct eth_addr *ea) | |
275 | { | |
276 | ea->be16[0] = htons(x >> 32); | |
37ba4764 AC |
277 | ea->be16[1] = htons((x & 0xFFFF0000) >> 16); |
278 | ea->be16[2] = htons(x & 0xFFFF); | |
74ff3298 JR |
279 | } |
280 | ||
281 | static inline struct eth_addr eth_addr_invert(const struct eth_addr src) | |
064af421 | 282 | { |
74ff3298 JR |
283 | struct eth_addr dst; |
284 | ||
285 | for (int i = 0; i < ARRAY_SIZE(src.be16); i++) { | |
286 | dst.be16[i] = ~src.be16[i]; | |
287 | } | |
288 | ||
289 | return dst; | |
064af421 | 290 | } |
74ff3298 JR |
291 | |
292 | static inline void eth_addr_mark_random(struct eth_addr *ea) | |
064af421 | 293 | { |
74ff3298 JR |
294 | ea->ea[0] &= ~1; /* Unicast. */ |
295 | ea->ea[0] |= 2; /* Private. */ | |
064af421 | 296 | } |
74ff3298 JR |
297 | |
298 | static inline void eth_addr_random(struct eth_addr *ea) | |
064af421 | 299 | { |
74ff3298 | 300 | random_bytes((uint8_t *)ea, sizeof *ea); |
064af421 BP |
301 | eth_addr_mark_random(ea); |
302 | } | |
74ff3298 JR |
303 | |
304 | static inline void eth_addr_nicira_random(struct eth_addr *ea) | |
70150daf JG |
305 | { |
306 | eth_addr_random(ea); | |
307 | ||
308 | /* Set the OUI to the Nicira one. */ | |
74ff3298 JR |
309 | ea->ea[0] = 0x00; |
310 | ea->ea[1] = 0x23; | |
311 | ea->ea[2] = 0x20; | |
70150daf JG |
312 | |
313 | /* Set the top bit to indicate random Nicira address. */ | |
74ff3298 | 314 | ea->ea[3] |= 0x80; |
70150daf | 315 | } |
74ff3298 | 316 | static inline uint32_t hash_mac(const struct eth_addr ea, |
7e36ac42 AZ |
317 | const uint16_t vlan, const uint32_t basis) |
318 | { | |
319 | return hash_uint64_basis(eth_addr_vlan_to_uint64(ea, vlan), basis); | |
320 | } | |
064af421 | 321 | |
74ff3298 JR |
322 | bool eth_addr_is_reserved(const struct eth_addr); |
323 | bool eth_addr_from_string(const char *, struct eth_addr *); | |
76343538 | 324 | |
74ff3298 | 325 | void compose_rarp(struct dp_packet *, const struct eth_addr); |
b9e8b45a | 326 | |
cf62fa4c PS |
327 | void eth_push_vlan(struct dp_packet *, ovs_be16 tpid, ovs_be16 tci); |
328 | void eth_pop_vlan(struct dp_packet *); | |
7c66b273 | 329 | |
cf62fa4c | 330 | const char *eth_from_hex(const char *hex, struct dp_packet **packetp); |
74ff3298 JR |
331 | void eth_format_masked(const struct eth_addr ea, |
332 | const struct eth_addr *mask, struct ds *s); | |
e22f1753 | 333 | |
cf62fa4c PS |
334 | void set_mpls_lse(struct dp_packet *, ovs_be32 label); |
335 | void push_mpls(struct dp_packet *packet, ovs_be16 ethtype, ovs_be32 lse); | |
336 | void pop_mpls(struct dp_packet *, ovs_be16 ethtype); | |
b02475c5 | 337 | |
b676167a | 338 | void set_mpls_lse_ttl(ovs_be32 *lse, uint8_t ttl); |
b02475c5 SH |
339 | void set_mpls_lse_tc(ovs_be32 *lse, uint8_t tc); |
340 | void set_mpls_lse_label(ovs_be32 *lse, ovs_be32 label); | |
341 | void set_mpls_lse_bos(ovs_be32 *lse, uint8_t bos); | |
342 | ovs_be32 set_mpls_lse_values(uint8_t ttl, uint8_t tc, uint8_t bos, | |
343 | ovs_be32 label); | |
344 | ||
eaa71334 BP |
345 | /* Example: |
346 | * | |
74ff3298 | 347 | * struct eth_addr mac; |
eaa71334 BP |
348 | * [...] |
349 | * printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac)); | |
350 | * | |
351 | */ | |
064af421 BP |
352 | #define ETH_ADDR_FMT \ |
353 | "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8 | |
ca92d173 AC |
354 | #define ETH_ADDR_ARGS(EA) ETH_ADDR_BYTES_ARGS((EA).ea) |
355 | #define ETH_ADDR_BYTES_ARGS(EAB) \ | |
356 | (EAB)[0], (EAB)[1], (EAB)[2], (EAB)[3], (EAB)[4], (EAB)[5] | |
b0d390e5 | 357 | #define ETH_ADDR_STRLEN 17 |
064af421 | 358 | |
b2342f7a BP |
359 | /* Example: |
360 | * | |
361 | * struct eth_addr64 eui64; | |
362 | * [...] | |
363 | * printf("The EUI-64 address is "ETH_ADDR64_FMT"\n", ETH_ADDR64_ARGS(mac)); | |
364 | * | |
365 | */ | |
366 | #define ETH_ADDR64_FMT \ | |
367 | "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":" \ | |
368 | "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8 | |
369 | #define ETH_ADDR64_ARGS(EA) ETH_ADDR64_BYTES_ARGS((EA).ea64) | |
370 | #define ETH_ADDR64_BYTES_ARGS(EAB) \ | |
371 | (EAB)[0], (EAB)[1], (EAB)[2], (EAB)[3], \ | |
372 | (EAB)[4], (EAB)[5], (EAB)[6], (EAB)[7] | |
373 | #define ETH_ADDR64_STRLEN 23 | |
374 | ||
eaa71334 BP |
375 | /* Example: |
376 | * | |
377 | * char *string = "1 00:11:22:33:44:55 2"; | |
74ff3298 | 378 | * struct eth_addr mac; |
eaa71334 BP |
379 | * int a, b; |
380 | * | |
c2c28dfd BP |
381 | * if (ovs_scan(string, "%d"ETH_ADDR_SCAN_FMT"%d", |
382 | * &a, ETH_ADDR_SCAN_ARGS(mac), &b)) { | |
eaa71334 BP |
383 | * ... |
384 | * } | |
385 | */ | |
386 | #define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8 | |
74ff3298 JR |
387 | #define ETH_ADDR_SCAN_ARGS(EA) \ |
388 | &(EA).ea[0], &(EA).ea[1], &(EA).ea[2], &(EA).ea[3], &(EA).ea[4], &(EA).ea[5] | |
eaa71334 | 389 | |
064af421 BP |
390 | #define ETH_TYPE_IP 0x0800 |
391 | #define ETH_TYPE_ARP 0x0806 | |
a36de779 | 392 | #define ETH_TYPE_TEB 0x6558 |
3e34fbdd IY |
393 | #define ETH_TYPE_VLAN_8021Q 0x8100 |
394 | #define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q | |
395 | #define ETH_TYPE_VLAN_8021AD 0x88a8 | |
d31f1109 | 396 | #define ETH_TYPE_IPV6 0x86dd |
c25c91fd | 397 | #define ETH_TYPE_LACP 0x8809 |
38f7147c | 398 | #define ETH_TYPE_RARP 0x8035 |
4fba171d BP |
399 | #define ETH_TYPE_MPLS 0x8847 |
400 | #define ETH_TYPE_MPLS_MCAST 0x8848 | |
3d2fbd70 | 401 | #define ETH_TYPE_NSH 0x894f |
064af421 | 402 | |
b02475c5 SH |
403 | static inline bool eth_type_mpls(ovs_be16 eth_type) |
404 | { | |
405 | return eth_type == htons(ETH_TYPE_MPLS) || | |
406 | eth_type == htons(ETH_TYPE_MPLS_MCAST); | |
407 | } | |
408 | ||
d6943394 TH |
409 | static inline bool eth_type_vlan(ovs_be16 eth_type) |
410 | { | |
411 | return eth_type == htons(ETH_TYPE_VLAN_8021Q) || | |
412 | eth_type == htons(ETH_TYPE_VLAN_8021AD); | |
413 | } | |
414 | ||
415 | ||
36956a7d BP |
416 | /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame |
417 | * lengths. */ | |
418 | #define ETH_TYPE_MIN 0x600 | |
419 | ||
064af421 BP |
420 | #define ETH_HEADER_LEN 14 |
421 | #define ETH_PAYLOAD_MIN 46 | |
422 | #define ETH_PAYLOAD_MAX 1500 | |
423 | #define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN) | |
424 | #define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX) | |
425 | #define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX) | |
426 | struct eth_header { | |
74ff3298 JR |
427 | struct eth_addr eth_dst; |
428 | struct eth_addr eth_src; | |
d5ca4fce | 429 | ovs_be16 eth_type; |
1620b7ea | 430 | }; |
064af421 BP |
431 | BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header)); |
432 | ||
88fc5281 JS |
433 | void push_eth(struct dp_packet *packet, const struct eth_addr *dst, |
434 | const struct eth_addr *src); | |
435 | void pop_eth(struct dp_packet *packet); | |
436 | ||
1fc11c59 JS |
437 | void encap_nsh(struct dp_packet *packet, |
438 | const struct ovs_action_encap_nsh *encap_nsh); | |
439 | bool decap_nsh(struct dp_packet *packet); | |
440 | ||
064af421 BP |
441 | #define LLC_DSAP_SNAP 0xaa |
442 | #define LLC_SSAP_SNAP 0xaa | |
443 | #define LLC_CNTL_SNAP 3 | |
444 | ||
445 | #define LLC_HEADER_LEN 3 | |
446 | struct llc_header { | |
447 | uint8_t llc_dsap; | |
448 | uint8_t llc_ssap; | |
449 | uint8_t llc_cntl; | |
1620b7ea | 450 | }; |
064af421 BP |
451 | BUILD_ASSERT_DECL(LLC_HEADER_LEN == sizeof(struct llc_header)); |
452 | ||
9efd308e DV |
453 | /* LLC field values used for STP frames. */ |
454 | #define STP_LLC_SSAP 0x42 | |
455 | #define STP_LLC_DSAP 0x42 | |
456 | #define STP_LLC_CNTL 0x03 | |
457 | ||
064af421 BP |
458 | #define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so |
459 | sizeof(SNAP_ORG_ETHERNET) == 3. */ | |
460 | #define SNAP_HEADER_LEN 5 | |
13b6bae6 | 461 | OVS_PACKED( |
064af421 BP |
462 | struct snap_header { |
463 | uint8_t snap_org[3]; | |
d5ca4fce | 464 | ovs_be16 snap_type; |
13b6bae6 | 465 | }); |
064af421 BP |
466 | BUILD_ASSERT_DECL(SNAP_HEADER_LEN == sizeof(struct snap_header)); |
467 | ||
468 | #define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN) | |
13b6bae6 | 469 | OVS_PACKED( |
064af421 BP |
470 | struct llc_snap_header { |
471 | struct llc_header llc; | |
472 | struct snap_header snap; | |
13b6bae6 | 473 | }); |
064af421 BP |
474 | BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header)); |
475 | ||
476 | #define VLAN_VID_MASK 0x0fff | |
33ce24ed BP |
477 | #define VLAN_VID_SHIFT 0 |
478 | ||
064af421 | 479 | #define VLAN_PCP_MASK 0xe000 |
33ce24ed | 480 | #define VLAN_PCP_SHIFT 13 |
064af421 | 481 | |
26233bb4 | 482 | #define VLAN_CFI 0x1000 |
e6cc0bab | 483 | #define VLAN_CFI_SHIFT 12 |
26233bb4 BP |
484 | |
485 | /* Given the vlan_tci field from an 802.1Q header, in network byte order, | |
486 | * returns the VLAN ID in host byte order. */ | |
487 | static inline uint16_t | |
d5ca4fce | 488 | vlan_tci_to_vid(ovs_be16 vlan_tci) |
26233bb4 BP |
489 | { |
490 | return (ntohs(vlan_tci) & VLAN_VID_MASK) >> VLAN_VID_SHIFT; | |
491 | } | |
492 | ||
493 | /* Given the vlan_tci field from an 802.1Q header, in network byte order, | |
494 | * returns the priority code point (PCP) in host byte order. */ | |
495 | static inline int | |
d5ca4fce | 496 | vlan_tci_to_pcp(ovs_be16 vlan_tci) |
26233bb4 BP |
497 | { |
498 | return (ntohs(vlan_tci) & VLAN_PCP_MASK) >> VLAN_PCP_SHIFT; | |
499 | } | |
500 | ||
e6cc0bab AZ |
501 | /* Given the vlan_tci field from an 802.1Q header, in network byte order, |
502 | * returns the Canonical Format Indicator (CFI). */ | |
503 | static inline int | |
504 | vlan_tci_to_cfi(ovs_be16 vlan_tci) | |
505 | { | |
506 | return (vlan_tci & htons(VLAN_CFI)) != 0; | |
507 | } | |
508 | ||
064af421 BP |
509 | #define VLAN_HEADER_LEN 4 |
510 | struct vlan_header { | |
d5ca4fce EJ |
511 | ovs_be16 vlan_tci; /* Lowest 12 bits are VLAN ID. */ |
512 | ovs_be16 vlan_next_type; | |
064af421 BP |
513 | }; |
514 | BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header)); | |
515 | ||
516 | #define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN) | |
517 | struct vlan_eth_header { | |
74ff3298 JR |
518 | struct eth_addr veth_dst; |
519 | struct eth_addr veth_src; | |
d5ca4fce EJ |
520 | ovs_be16 veth_type; /* Always htons(ETH_TYPE_VLAN). */ |
521 | ovs_be16 veth_tci; /* Lowest 12 bits are VLAN ID. */ | |
522 | ovs_be16 veth_next_type; | |
1620b7ea | 523 | }; |
064af421 BP |
524 | BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header)); |
525 | ||
b02475c5 SH |
526 | /* MPLS related definitions */ |
527 | #define MPLS_TTL_MASK 0x000000ff | |
528 | #define MPLS_TTL_SHIFT 0 | |
529 | ||
530 | #define MPLS_BOS_MASK 0x00000100 | |
531 | #define MPLS_BOS_SHIFT 8 | |
532 | ||
533 | #define MPLS_TC_MASK 0x00000e00 | |
534 | #define MPLS_TC_SHIFT 9 | |
535 | ||
536 | #define MPLS_LABEL_MASK 0xfffff000 | |
537 | #define MPLS_LABEL_SHIFT 12 | |
538 | ||
539 | #define MPLS_HLEN 4 | |
540 | ||
541 | struct mpls_hdr { | |
5fa008d4 | 542 | ovs_16aligned_be32 mpls_lse; |
b02475c5 SH |
543 | }; |
544 | BUILD_ASSERT_DECL(MPLS_HLEN == sizeof(struct mpls_hdr)); | |
545 | ||
546 | /* Given a mpls label stack entry in network byte order | |
547 | * return mpls label in host byte order */ | |
548 | static inline uint32_t | |
549 | mpls_lse_to_label(ovs_be32 mpls_lse) | |
550 | { | |
551 | return (ntohl(mpls_lse) & MPLS_LABEL_MASK) >> MPLS_LABEL_SHIFT; | |
552 | } | |
553 | ||
554 | /* Given a mpls label stack entry in network byte order | |
555 | * return mpls tc */ | |
556 | static inline uint8_t | |
557 | mpls_lse_to_tc(ovs_be32 mpls_lse) | |
558 | { | |
559 | return (ntohl(mpls_lse) & MPLS_TC_MASK) >> MPLS_TC_SHIFT; | |
560 | } | |
561 | ||
562 | /* Given a mpls label stack entry in network byte order | |
563 | * return mpls ttl */ | |
564 | static inline uint8_t | |
565 | mpls_lse_to_ttl(ovs_be32 mpls_lse) | |
566 | { | |
567 | return (ntohl(mpls_lse) & MPLS_TTL_MASK) >> MPLS_TTL_SHIFT; | |
568 | } | |
569 | ||
570 | /* Set TTL in mpls lse. */ | |
571 | static inline void | |
572 | flow_set_mpls_lse_ttl(ovs_be32 *mpls_lse, uint8_t ttl) | |
573 | { | |
574 | *mpls_lse &= ~htonl(MPLS_TTL_MASK); | |
575 | *mpls_lse |= htonl(ttl << MPLS_TTL_SHIFT); | |
576 | } | |
577 | ||
578 | /* Given a mpls label stack entry in network byte order | |
579 | * return mpls BoS bit */ | |
580 | static inline uint8_t | |
581 | mpls_lse_to_bos(ovs_be32 mpls_lse) | |
582 | { | |
583 | return (mpls_lse & htonl(MPLS_BOS_MASK)) != 0; | |
584 | } | |
585 | ||
ed36537e | 586 | #define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32 |
064af421 | 587 | #define IP_ARGS(ip) \ |
ed36537e BP |
588 | ntohl(ip) >> 24, \ |
589 | (ntohl(ip) >> 16) & 0xff, \ | |
590 | (ntohl(ip) >> 8) & 0xff, \ | |
591 | ntohl(ip) & 0xff | |
064af421 | 592 | |
3bffc610 BP |
593 | /* Example: |
594 | * | |
595 | * char *string = "1 33.44.55.66 2"; | |
596 | * ovs_be32 ip; | |
597 | * int a, b; | |
598 | * | |
c2c28dfd | 599 | * if (ovs_scan(string, "%d"IP_SCAN_FMT"%d", &a, IP_SCAN_ARGS(&ip), &b)) { |
3bffc610 BP |
600 | * ... |
601 | * } | |
602 | */ | |
603 | #define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8 | |
604 | #define IP_SCAN_ARGS(ip) \ | |
605 | ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \ | |
606 | &((uint8_t *) ip)[1], \ | |
607 | &((uint8_t *) ip)[2], \ | |
608 | &((uint8_t *) ip)[3] | |
3bffc610 | 609 | |
e2bfcad6 | 610 | #define IP_PORT_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8":%"SCNu16 |
611 | #define IP_PORT_SCAN_ARGS(ip, port) \ | |
612 | ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \ | |
613 | &((uint8_t *) ip)[1], \ | |
614 | &((uint8_t *) ip)[2], \ | |
615 | &((uint8_t *) ip)[3], \ | |
616 | ((void) (ovs_be16) *(port), (uint16_t *) port) | |
617 | ||
0596e897 BP |
618 | /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N |
619 | * high-order 1-bits and 32-N low-order 0-bits. */ | |
620 | static inline bool | |
621 | ip_is_cidr(ovs_be32 netmask) | |
622 | { | |
623 | uint32_t x = ~ntohl(netmask); | |
624 | return !(x & (x + 1)); | |
625 | } | |
b37e6334 BP |
626 | static inline bool |
627 | ip_is_multicast(ovs_be32 ip) | |
628 | { | |
629 | return (ip & htonl(0xf0000000)) == htonl(0xe0000000); | |
630 | } | |
7e598a7d FL |
631 | static inline bool |
632 | ip_is_local_multicast(ovs_be32 ip) | |
633 | { | |
634 | return (ip & htonl(0xffffff00)) == htonl(0xe0000000); | |
635 | } | |
aad29cd1 BP |
636 | int ip_count_cidr_bits(ovs_be32 netmask); |
637 | void ip_format_masked(ovs_be32 ip, ovs_be32 mask, struct ds *); | |
2b02db1b | 638 | bool ip_parse(const char *s, ovs_be32 *ip); |
e2bfcad6 | 639 | char *ip_parse_port(const char *s, ovs_be32 *ip, ovs_be16 *port) |
640 | OVS_WARN_UNUSED_RESULT; | |
61440451 BP |
641 | char *ip_parse_masked(const char *s, ovs_be32 *ip, ovs_be32 *mask) |
642 | OVS_WARN_UNUSED_RESULT; | |
2b02db1b BP |
643 | char *ip_parse_cidr(const char *s, ovs_be32 *ip, unsigned int *plen) |
644 | OVS_WARN_UNUSED_RESULT; | |
7dc88496 NS |
645 | char *ip_parse_masked_len(const char *s, int *n, ovs_be32 *ip, ovs_be32 *mask) |
646 | OVS_WARN_UNUSED_RESULT; | |
647 | char *ip_parse_cidr_len(const char *s, int *n, ovs_be32 *ip, | |
648 | unsigned int *plen) | |
649 | OVS_WARN_UNUSED_RESULT; | |
0596e897 | 650 | |
064af421 BP |
651 | #define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4) |
652 | #define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15) | |
653 | #define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl)) | |
654 | ||
6c99379e BP |
655 | #ifndef IPPROTO_SCTP |
656 | #define IPPROTO_SCTP 132 | |
657 | #endif | |
658 | ||
81f97b1e JR |
659 | #ifndef IPPROTO_DCCP |
660 | #define IPPROTO_DCCP 33 | |
661 | #endif | |
662 | ||
663 | #ifndef IPPROTO_IGMP | |
664 | #define IPPROTO_IGMP 2 | |
665 | #endif | |
666 | ||
667 | #ifndef IPPROTO_UDPLITE | |
668 | #define IPPROTO_UDPLITE 136 | |
669 | #endif | |
670 | ||
f1193301 | 671 | /* TOS fields. */ |
495fe264 JG |
672 | #define IP_ECN_NOT_ECT 0x0 |
673 | #define IP_ECN_ECT_1 0x01 | |
674 | #define IP_ECN_ECT_0 0x02 | |
675 | #define IP_ECN_CE 0x03 | |
f1193301 BP |
676 | #define IP_ECN_MASK 0x03 |
677 | #define IP_DSCP_MASK 0xfc | |
678 | ||
1bc3f0ed PS |
679 | static inline int |
680 | IP_ECN_is_ce(uint8_t dsfield) | |
681 | { | |
682 | return (dsfield & IP_ECN_MASK) == IP_ECN_CE; | |
683 | } | |
684 | ||
064af421 BP |
685 | #define IP_VERSION 4 |
686 | ||
687 | #define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */ | |
688 | #define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */ | |
689 | #define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */ | |
690 | #define IP_IS_FRAGMENT(ip_frag_off) \ | |
691 | ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK)) | |
692 | ||
693 | #define IP_HEADER_LEN 20 | |
694 | struct ip_header { | |
695 | uint8_t ip_ihl_ver; | |
696 | uint8_t ip_tos; | |
d5ca4fce EJ |
697 | ovs_be16 ip_tot_len; |
698 | ovs_be16 ip_id; | |
699 | ovs_be16 ip_frag_off; | |
064af421 BP |
700 | uint8_t ip_ttl; |
701 | uint8_t ip_proto; | |
d5ca4fce | 702 | ovs_be16 ip_csum; |
7c457c33 BP |
703 | ovs_16aligned_be32 ip_src; |
704 | ovs_16aligned_be32 ip_dst; | |
064af421 BP |
705 | }; |
706 | BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header)); | |
707 | ||
caf64dc9 DDP |
708 | /* ICMPv4 types. */ |
709 | #define ICMP4_ECHO_REPLY 0 | |
710 | #define ICMP4_DST_UNREACH 3 | |
711 | #define ICMP4_SOURCEQUENCH 4 | |
712 | #define ICMP4_REDIRECT 5 | |
713 | #define ICMP4_ECHO_REQUEST 8 | |
714 | #define ICMP4_TIME_EXCEEDED 11 | |
715 | #define ICMP4_PARAM_PROB 12 | |
716 | #define ICMP4_TIMESTAMP 13 | |
717 | #define ICMP4_TIMESTAMPREPLY 14 | |
718 | #define ICMP4_INFOREQUEST 15 | |
719 | #define ICMP4_INFOREPLY 16 | |
720 | ||
c4ccff78 | 721 | #define ICMP_HEADER_LEN 8 |
064af421 BP |
722 | struct icmp_header { |
723 | uint8_t icmp_type; | |
724 | uint8_t icmp_code; | |
d5ca4fce | 725 | ovs_be16 icmp_csum; |
c4ccff78 JG |
726 | union { |
727 | struct { | |
728 | ovs_be16 id; | |
729 | ovs_be16 seq; | |
730 | } echo; | |
731 | struct { | |
732 | ovs_be16 empty; | |
733 | ovs_be16 mtu; | |
734 | } frag; | |
7c457c33 | 735 | ovs_16aligned_be32 gateway; |
c4ccff78 | 736 | } icmp_fields; |
064af421 BP |
737 | }; |
738 | BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_header)); | |
739 | ||
8e451a96 DB |
740 | #define IGMP_HEADER_LEN 8 |
741 | struct igmp_header { | |
742 | uint8_t igmp_type; | |
743 | uint8_t igmp_code; | |
744 | ovs_be16 igmp_csum; | |
745 | ovs_16aligned_be32 group; | |
746 | }; | |
747 | BUILD_ASSERT_DECL(IGMP_HEADER_LEN == sizeof(struct igmp_header)); | |
748 | ||
e3102e42 TLSC |
749 | #define IGMPV3_HEADER_LEN 8 |
750 | struct igmpv3_header { | |
751 | uint8_t type; | |
752 | uint8_t rsvr1; | |
753 | ovs_be16 csum; | |
754 | ovs_be16 rsvr2; | |
755 | ovs_be16 ngrp; | |
756 | }; | |
757 | BUILD_ASSERT_DECL(IGMPV3_HEADER_LEN == sizeof(struct igmpv3_header)); | |
758 | ||
759 | #define IGMPV3_RECORD_LEN 8 | |
760 | struct igmpv3_record { | |
761 | uint8_t type; | |
762 | uint8_t aux_len; | |
763 | ovs_be16 nsrcs; | |
764 | ovs_16aligned_be32 maddr; | |
765 | }; | |
766 | BUILD_ASSERT_DECL(IGMPV3_RECORD_LEN == sizeof(struct igmpv3_record)); | |
767 | ||
8e451a96 DB |
768 | #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */ |
769 | #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */ | |
770 | #define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x12 */ | |
771 | #define IGMP_HOST_LEAVE_MESSAGE 0x17 | |
772 | #define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x12 */ | |
773 | ||
06994f87 TLSC |
774 | /* |
775 | * IGMPv3 and MLDv2 use the same codes. | |
776 | */ | |
e3102e42 TLSC |
777 | #define IGMPV3_MODE_IS_INCLUDE 1 |
778 | #define IGMPV3_MODE_IS_EXCLUDE 2 | |
779 | #define IGMPV3_CHANGE_TO_INCLUDE_MODE 3 | |
780 | #define IGMPV3_CHANGE_TO_EXCLUDE_MODE 4 | |
781 | #define IGMPV3_ALLOW_NEW_SOURCES 5 | |
782 | #define IGMPV3_BLOCK_OLD_SOURCES 6 | |
783 | ||
c6bcb685 JS |
784 | #define SCTP_HEADER_LEN 12 |
785 | struct sctp_header { | |
786 | ovs_be16 sctp_src; | |
787 | ovs_be16 sctp_dst; | |
5fa008d4 BP |
788 | ovs_16aligned_be32 sctp_vtag; |
789 | ovs_16aligned_be32 sctp_csum; | |
c6bcb685 JS |
790 | }; |
791 | BUILD_ASSERT_DECL(SCTP_HEADER_LEN == sizeof(struct sctp_header)); | |
792 | ||
064af421 BP |
793 | #define UDP_HEADER_LEN 8 |
794 | struct udp_header { | |
d5ca4fce EJ |
795 | ovs_be16 udp_src; |
796 | ovs_be16 udp_dst; | |
797 | ovs_be16 udp_len; | |
798 | ovs_be16 udp_csum; | |
064af421 BP |
799 | }; |
800 | BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header)); | |
801 | ||
bc61c7b4 IS |
802 | #define ESP_HEADER_LEN 8 |
803 | struct esp_header { | |
804 | ovs_be32 spi; | |
805 | ovs_be32 seq_no; | |
806 | }; | |
807 | BUILD_ASSERT_DECL(ESP_HEADER_LEN == sizeof(struct esp_header)); | |
808 | ||
809 | #define ESP_TRAILER_LEN 2 | |
810 | struct esp_trailer { | |
811 | uint8_t pad_len; | |
812 | uint8_t next_hdr; | |
813 | }; | |
814 | BUILD_ASSERT_DECL(ESP_TRAILER_LEN == sizeof(struct esp_trailer)); | |
815 | ||
a66733a8 JR |
816 | #define TCP_FIN 0x001 |
817 | #define TCP_SYN 0x002 | |
818 | #define TCP_RST 0x004 | |
819 | #define TCP_PSH 0x008 | |
820 | #define TCP_ACK 0x010 | |
821 | #define TCP_URG 0x020 | |
822 | #define TCP_ECE 0x040 | |
823 | #define TCP_CWR 0x080 | |
824 | #define TCP_NS 0x100 | |
064af421 | 825 | |
df9b6612 | 826 | #define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12))) |
a66733a8 | 827 | #define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff) |
419681da | 828 | #define TCP_FLAGS_BE16(tcp_ctl) ((tcp_ctl) & htons(0x0fff)) |
d84d4b88 | 829 | #define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12) |
064af421 BP |
830 | |
831 | #define TCP_HEADER_LEN 20 | |
832 | struct tcp_header { | |
d5ca4fce EJ |
833 | ovs_be16 tcp_src; |
834 | ovs_be16 tcp_dst; | |
7c457c33 BP |
835 | ovs_16aligned_be32 tcp_seq; |
836 | ovs_16aligned_be32 tcp_ack; | |
d5ca4fce EJ |
837 | ovs_be16 tcp_ctl; |
838 | ovs_be16 tcp_winsz; | |
839 | ovs_be16 tcp_csum; | |
840 | ovs_be16 tcp_urg; | |
064af421 BP |
841 | }; |
842 | BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header)); | |
843 | ||
fd6cd1bf BP |
844 | /* Connection states. |
845 | * | |
846 | * Names like CS_RELATED are bit values, e.g. 1 << 2. | |
847 | * Names like CS_RELATED_BIT are bit indexes, e.g. 2. */ | |
848 | #define CS_STATES \ | |
849 | CS_STATE(NEW, 0, "new") \ | |
850 | CS_STATE(ESTABLISHED, 1, "est") \ | |
851 | CS_STATE(RELATED, 2, "rel") \ | |
852 | CS_STATE(REPLY_DIR, 3, "rpl") \ | |
853 | CS_STATE(INVALID, 4, "inv") \ | |
854 | CS_STATE(TRACKED, 5, "trk") \ | |
855 | CS_STATE(SRC_NAT, 6, "snat") \ | |
856 | CS_STATE(DST_NAT, 7, "dnat") | |
aa68cf38 RB |
857 | |
858 | enum { | |
fd6cd1bf BP |
859 | #define CS_STATE(ENUM, INDEX, NAME) \ |
860 | CS_##ENUM = 1 << INDEX, \ | |
861 | CS_##ENUM##_BIT = INDEX, | |
862 | CS_STATES | |
863 | #undef CS_STATE | |
aa68cf38 | 864 | }; |
07659514 JS |
865 | |
866 | /* Undefined connection state bits. */ | |
fd6cd1bf BP |
867 | enum { |
868 | #define CS_STATE(ENUM, INDEX, NAME) +CS_##ENUM | |
869 | CS_SUPPORTED_MASK = CS_STATES | |
870 | #undef CS_STATE | |
871 | }; | |
07659514 JS |
872 | #define CS_UNSUPPORTED_MASK (~(uint32_t)CS_SUPPORTED_MASK) |
873 | ||
064af421 BP |
874 | #define ARP_HRD_ETHERNET 1 |
875 | #define ARP_PRO_IP 0x0800 | |
876 | #define ARP_OP_REQUEST 1 | |
877 | #define ARP_OP_REPLY 2 | |
7cb57d10 | 878 | #define ARP_OP_RARP 3 |
064af421 BP |
879 | |
880 | #define ARP_ETH_HEADER_LEN 28 | |
881 | struct arp_eth_header { | |
882 | /* Generic members. */ | |
d5ca4fce EJ |
883 | ovs_be16 ar_hrd; /* Hardware type. */ |
884 | ovs_be16 ar_pro; /* Protocol type. */ | |
064af421 BP |
885 | uint8_t ar_hln; /* Hardware address length. */ |
886 | uint8_t ar_pln; /* Protocol address length. */ | |
d5ca4fce | 887 | ovs_be16 ar_op; /* Opcode. */ |
064af421 BP |
888 | |
889 | /* Ethernet+IPv4 specific members. */ | |
74ff3298 JR |
890 | struct eth_addr ar_sha; /* Sender hardware address. */ |
891 | ovs_16aligned_be32 ar_spa; /* Sender protocol address. */ | |
892 | struct eth_addr ar_tha; /* Target hardware address. */ | |
893 | ovs_16aligned_be32 ar_tpa; /* Target protocol address. */ | |
7c457c33 | 894 | }; |
064af421 BP |
895 | BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header)); |
896 | ||
370e373b TLSC |
897 | #define IPV6_HEADER_LEN 40 |
898 | ||
4528f34f BP |
899 | /* Like struct in6_addr, but whereas that struct requires 32-bit alignment on |
900 | * most implementations, this one only requires 16-bit alignment. */ | |
901 | union ovs_16aligned_in6_addr { | |
902 | ovs_be16 be16[8]; | |
903 | ovs_16aligned_be32 be32[4]; | |
904 | }; | |
905 | ||
906 | /* Like struct in6_hdr, but whereas that struct requires 32-bit alignment, this | |
907 | * one only requires 16-bit alignment. */ | |
908 | struct ovs_16aligned_ip6_hdr { | |
909 | union { | |
910 | struct ovs_16aligned_ip6_hdrctl { | |
911 | ovs_16aligned_be32 ip6_un1_flow; | |
912 | ovs_be16 ip6_un1_plen; | |
913 | uint8_t ip6_un1_nxt; | |
914 | uint8_t ip6_un1_hlim; | |
915 | } ip6_un1; | |
916 | uint8_t ip6_un2_vfc; | |
917 | } ip6_ctlun; | |
918 | union ovs_16aligned_in6_addr ip6_src; | |
919 | union ovs_16aligned_in6_addr ip6_dst; | |
920 | }; | |
921 | ||
922 | /* Like struct in6_frag, but whereas that struct requires 32-bit alignment, | |
923 | * this one only requires 16-bit alignment. */ | |
924 | struct ovs_16aligned_ip6_frag { | |
925 | uint8_t ip6f_nxt; | |
926 | uint8_t ip6f_reserved; | |
927 | ovs_be16 ip6f_offlg; | |
928 | ovs_16aligned_be32 ip6f_ident; | |
929 | }; | |
930 | ||
5abf65d0 JG |
931 | #define ICMP6_HEADER_LEN 4 |
932 | struct icmp6_header { | |
933 | uint8_t icmp6_type; | |
934 | uint8_t icmp6_code; | |
935 | ovs_be16 icmp6_cksum; | |
5abf65d0 JG |
936 | }; |
937 | BUILD_ASSERT_DECL(ICMP6_HEADER_LEN == sizeof(struct icmp6_header)); | |
938 | ||
edd1bef4 DB |
939 | #define ICMP6_ERROR_HEADER_LEN 8 |
940 | struct icmp6_error_header { | |
941 | struct icmp6_header icmp6_base; | |
942 | ovs_be32 icmp6_error_ext; | |
943 | }; | |
944 | BUILD_ASSERT_DECL(ICMP6_ERROR_HEADER_LEN == sizeof(struct icmp6_error_header)); | |
945 | ||
370e373b | 946 | uint32_t packet_csum_pseudoheader6(const struct ovs_16aligned_ip6_hdr *); |
46445c63 EC |
947 | uint16_t packet_csum_upperlayer6(const struct ovs_16aligned_ip6_hdr *, |
948 | const void *, uint8_t, uint16_t); | |
370e373b | 949 | |
e60e935b SRCSA |
950 | /* Neighbor Discovery option field. |
951 | * ND options are always a multiple of 8 bytes in size. */ | |
86d46f3c ZKL |
952 | #define ND_LLA_OPT_LEN 8 |
953 | struct ovs_nd_lla_opt { | |
954 | uint8_t type; /* One of ND_OPT_*_LINKADDR. */ | |
955 | uint8_t len; | |
956 | struct eth_addr mac; | |
e60e935b | 957 | }; |
86d46f3c | 958 | BUILD_ASSERT_DECL(ND_LLA_OPT_LEN == sizeof(struct ovs_nd_lla_opt)); |
e60e935b | 959 | |
b24ab67c ZKL |
960 | /* Neighbor Discovery option: Prefix Information. */ |
961 | #define ND_PREFIX_OPT_LEN 32 | |
962 | struct ovs_nd_prefix_opt { | |
963 | uint8_t type; /* ND_OPT_PREFIX_INFORMATION. */ | |
964 | uint8_t len; /* Always 4. */ | |
965 | uint8_t prefix_len; | |
966 | uint8_t la_flags; /* ND_PREFIX_* flags. */ | |
967 | ovs_16aligned_be32 valid_lifetime; | |
968 | ovs_16aligned_be32 preferred_lifetime; | |
969 | ovs_16aligned_be32 reserved; /* Always 0. */ | |
970 | union ovs_16aligned_in6_addr prefix; | |
971 | }; | |
972 | BUILD_ASSERT_DECL(ND_PREFIX_OPT_LEN == sizeof(struct ovs_nd_prefix_opt)); | |
973 | ||
974 | #define ND_PREFIX_ON_LINK 0x80 | |
975 | #define ND_PREFIX_AUTONOMOUS_ADDRESS 0x40 | |
976 | ||
977 | /* Neighbor Discovery option: MTU. */ | |
978 | #define ND_MTU_OPT_LEN 8 | |
979 | struct ovs_nd_mtu_opt { | |
980 | uint8_t type; /* ND_OPT_MTU */ | |
981 | uint8_t len; /* Always 1. */ | |
982 | ovs_be16 reserved; /* Always 0. */ | |
983 | ovs_16aligned_be32 mtu; | |
984 | }; | |
985 | BUILD_ASSERT_DECL(ND_MTU_OPT_LEN == sizeof(struct ovs_nd_mtu_opt)); | |
986 | ||
e60e935b SRCSA |
987 | /* Like struct nd_msg (from ndisc.h), but whereas that struct requires 32-bit |
988 | * alignment, this one only requires 16-bit alignment. */ | |
989 | #define ND_MSG_LEN 24 | |
990 | struct ovs_nd_msg { | |
991 | struct icmp6_header icmph; | |
29d5e9a7 | 992 | ovs_16aligned_be32 rso_flags; |
e60e935b | 993 | union ovs_16aligned_in6_addr target; |
86d46f3c | 994 | struct ovs_nd_lla_opt options[0]; |
e60e935b SRCSA |
995 | }; |
996 | BUILD_ASSERT_DECL(ND_MSG_LEN == sizeof(struct ovs_nd_msg)); | |
997 | ||
b24ab67c | 998 | /* Neighbor Discovery packet flags. */ |
fa7f915c JP |
999 | #define ND_RSO_ROUTER 0x80000000 |
1000 | #define ND_RSO_SOLICITED 0x40000000 | |
1001 | #define ND_RSO_OVERRIDE 0x20000000 | |
1002 | ||
b24ab67c ZKL |
1003 | #define RA_MSG_LEN 16 |
1004 | struct ovs_ra_msg { | |
1005 | struct icmp6_header icmph; | |
1006 | uint8_t cur_hop_limit; | |
1007 | uint8_t mo_flags; /* ND_RA_MANAGED_ADDRESS and ND_RA_OTHER_CONFIG flags. */ | |
1008 | ovs_be16 router_lifetime; | |
1009 | ovs_be32 reachable_time; | |
1010 | ovs_be32 retrans_timer; | |
86d46f3c | 1011 | struct ovs_nd_lla_opt options[0]; |
b24ab67c ZKL |
1012 | }; |
1013 | BUILD_ASSERT_DECL(RA_MSG_LEN == sizeof(struct ovs_ra_msg)); | |
1014 | ||
1015 | #define ND_RA_MANAGED_ADDRESS 0x80 | |
1016 | #define ND_RA_OTHER_CONFIG 0x40 | |
1017 | ||
06994f87 TLSC |
1018 | /* |
1019 | * Use the same struct for MLD and MLD2, naming members as the defined fields in | |
1020 | * in the corresponding version of the protocol, though they are reserved in the | |
1021 | * other one. | |
1022 | */ | |
1023 | #define MLD_HEADER_LEN 8 | |
1024 | struct mld_header { | |
1025 | uint8_t type; | |
1026 | uint8_t code; | |
1027 | ovs_be16 csum; | |
1028 | ovs_be16 mrd; | |
1029 | ovs_be16 ngrp; | |
1030 | }; | |
1031 | BUILD_ASSERT_DECL(MLD_HEADER_LEN == sizeof(struct mld_header)); | |
1032 | ||
1033 | #define MLD2_RECORD_LEN 20 | |
1034 | struct mld2_record { | |
1035 | uint8_t type; | |
1036 | uint8_t aux_len; | |
1037 | ovs_be16 nsrcs; | |
1038 | union ovs_16aligned_in6_addr maddr; | |
1039 | }; | |
1040 | BUILD_ASSERT_DECL(MLD2_RECORD_LEN == sizeof(struct mld2_record)); | |
1041 | ||
1042 | #define MLD_QUERY 130 | |
1043 | #define MLD_REPORT 131 | |
1044 | #define MLD_DONE 132 | |
1045 | #define MLD2_REPORT 143 | |
1046 | ||
fa8223b7 JP |
1047 | /* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */ |
1048 | #define IPV6_LABEL_MASK 0x000fffff | |
1049 | ||
3bffc610 BP |
1050 | /* Example: |
1051 | * | |
1052 | * char *string = "1 ::1 2"; | |
1053 | * char ipv6_s[IPV6_SCAN_LEN + 1]; | |
1054 | * struct in6_addr ipv6; | |
1055 | * | |
c2c28dfd | 1056 | * if (ovs_scan(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b) |
3bffc610 BP |
1057 | * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) { |
1058 | * ... | |
1059 | * } | |
1060 | */ | |
1061 | #define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]" | |
1062 | #define IPV6_SCAN_LEN 46 | |
1063 | ||
d31f1109 JP |
1064 | extern const struct in6_addr in6addr_exact; |
1065 | #define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \ | |
1066 | 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } } | |
1067 | ||
06994f87 TLSC |
1068 | extern const struct in6_addr in6addr_all_hosts; |
1069 | #define IN6ADDR_ALL_HOSTS_INIT { { { 0xff,0x02,0x00,0x00,0x00,0x00,0x00,0x00, \ | |
1070 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01 } } } | |
1071 | ||
b24ab67c ZKL |
1072 | extern const struct in6_addr in6addr_all_routers; |
1073 | #define IN6ADDR_ALL_ROUTERS_INIT { { { 0xff,0x02,0x00,0x00,0x00,0x00,0x00,0x00, \ | |
1074 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02 } } } | |
1075 | ||
d31f1109 JP |
1076 | static inline bool ipv6_addr_equals(const struct in6_addr *a, |
1077 | const struct in6_addr *b) | |
1078 | { | |
1079 | #ifdef IN6_ARE_ADDR_EQUAL | |
1080 | return IN6_ARE_ADDR_EQUAL(a, b); | |
1081 | #else | |
1082 | return !memcmp(a, b, sizeof(*a)); | |
1083 | #endif | |
1084 | } | |
1085 | ||
33ac3c83 | 1086 | /* Checks the IPv6 address in 'mask' for all zeroes. */ |
d31f1109 JP |
1087 | static inline bool ipv6_mask_is_any(const struct in6_addr *mask) { |
1088 | return ipv6_addr_equals(mask, &in6addr_any); | |
1089 | } | |
1090 | ||
1091 | static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) { | |
1092 | return ipv6_addr_equals(mask, &in6addr_exact); | |
1093 | } | |
1094 | ||
06994f87 TLSC |
1095 | static inline bool ipv6_is_all_hosts(const struct in6_addr *addr) { |
1096 | return ipv6_addr_equals(addr, &in6addr_all_hosts); | |
1097 | } | |
1098 | ||
8c46162b JB |
1099 | static inline bool ipv6_addr_is_set(const struct in6_addr *addr) { |
1100 | return !ipv6_addr_equals(addr, &in6addr_any); | |
1101 | } | |
1102 | ||
1103 | static inline bool ipv6_addr_is_multicast(const struct in6_addr *ip) { | |
1104 | return ip->s6_addr[0] == 0xff; | |
1105 | } | |
1106 | ||
12d0ee08 BP |
1107 | static inline struct in6_addr |
1108 | in6_addr_mapped_ipv4(ovs_be32 ip4) | |
1109 | { | |
274cd1f1 YHW |
1110 | struct in6_addr ip6; |
1111 | memset(&ip6, 0, sizeof(ip6)); | |
1112 | ip6.s6_addr[10] = 0xff, ip6.s6_addr[11] = 0xff; | |
12d0ee08 BP |
1113 | memcpy(&ip6.s6_addr[12], &ip4, 4); |
1114 | return ip6; | |
1115 | } | |
1116 | ||
754c1feb | 1117 | static inline void |
12d0ee08 | 1118 | in6_addr_set_mapped_ipv4(struct in6_addr *ip6, ovs_be32 ip4) |
754c1feb | 1119 | { |
12d0ee08 | 1120 | *ip6 = in6_addr_mapped_ipv4(ip4); |
754c1feb TLSC |
1121 | } |
1122 | ||
1123 | static inline ovs_be32 | |
1124 | in6_addr_get_mapped_ipv4(const struct in6_addr *addr) | |
1125 | { | |
8bfc3c10 SS |
1126 | union ovs_16aligned_in6_addr *taddr = |
1127 | (union ovs_16aligned_in6_addr *) addr; | |
754c1feb TLSC |
1128 | if (IN6_IS_ADDR_V4MAPPED(addr)) { |
1129 | return get_16aligned_be32(&taddr->be32[3]); | |
1130 | } else { | |
1131 | return INADDR_ANY; | |
1132 | } | |
1133 | } | |
1134 | ||
c2b878e0 TLSC |
1135 | static inline void |
1136 | in6_addr_solicited_node(struct in6_addr *addr, const struct in6_addr *ip6) | |
1137 | { | |
8bfc3c10 SS |
1138 | union ovs_16aligned_in6_addr *taddr = |
1139 | (union ovs_16aligned_in6_addr *) addr; | |
c2b878e0 TLSC |
1140 | memset(taddr->be16, 0, sizeof(taddr->be16)); |
1141 | taddr->be16[0] = htons(0xff02); | |
1142 | taddr->be16[5] = htons(0x1); | |
1143 | taddr->be16[6] = htons(0xff00); | |
1144 | memcpy(&addr->s6_addr[13], &ip6->s6_addr[13], 3); | |
1145 | } | |
1146 | ||
7cc0741e NS |
1147 | /* |
1148 | * Generates ipv6 EUI64 address from the given eth addr | |
1149 | * and prefix and stores it in 'lla' | |
1150 | */ | |
1151 | static inline void | |
1152 | in6_generate_eui64(struct eth_addr ea, struct in6_addr *prefix, | |
1153 | struct in6_addr *lla) | |
1154 | { | |
8bfc3c10 SS |
1155 | union ovs_16aligned_in6_addr *taddr = |
1156 | (union ovs_16aligned_in6_addr *) lla; | |
1157 | union ovs_16aligned_in6_addr *prefix_taddr = | |
1158 | (union ovs_16aligned_in6_addr *) prefix; | |
7cc0741e NS |
1159 | taddr->be16[0] = prefix_taddr->be16[0]; |
1160 | taddr->be16[1] = prefix_taddr->be16[1]; | |
1161 | taddr->be16[2] = prefix_taddr->be16[2]; | |
1162 | taddr->be16[3] = prefix_taddr->be16[3]; | |
1163 | taddr->be16[4] = htons(((ea.ea[0] ^ 0x02) << 8) | ea.ea[1]); | |
1164 | taddr->be16[5] = htons(ea.ea[2] << 8 | 0x00ff); | |
1165 | taddr->be16[6] = htons(0xfe << 8 | ea.ea[3]); | |
1166 | taddr->be16[7] = ea.be16[2]; | |
1167 | } | |
1168 | ||
685f4dfe NS |
1169 | /* |
1170 | * Generates ipv6 link local address from the given eth addr | |
1171 | * with prefix 'fe80::/64' and stores it in 'lla' | |
1172 | */ | |
1173 | static inline void | |
1174 | in6_generate_lla(struct eth_addr ea, struct in6_addr *lla) | |
1175 | { | |
8bfc3c10 SS |
1176 | union ovs_16aligned_in6_addr *taddr = |
1177 | (union ovs_16aligned_in6_addr *) lla; | |
685f4dfe NS |
1178 | memset(taddr->be16, 0, sizeof(taddr->be16)); |
1179 | taddr->be16[0] = htons(0xfe80); | |
1180 | taddr->be16[4] = htons(((ea.ea[0] ^ 0x02) << 8) | ea.ea[1]); | |
1181 | taddr->be16[5] = htons(ea.ea[2] << 8 | 0x00ff); | |
1182 | taddr->be16[6] = htons(0xfe << 8 | ea.ea[3]); | |
1183 | taddr->be16[7] = ea.be16[2]; | |
1184 | } | |
1185 | ||
6d1a4f16 JP |
1186 | /* Returns true if 'addr' is a link local address. Otherwise, false. */ |
1187 | static inline bool | |
1188 | in6_is_lla(struct in6_addr *addr) | |
1189 | { | |
1190 | #ifdef s6_addr32 | |
1191 | return addr->s6_addr32[0] == htonl(0xfe800000) && !(addr->s6_addr32[1]); | |
1192 | #else | |
bf32e3e2 JP |
1193 | return addr->s6_addr[0] == 0xfe && addr->s6_addr[1] == 0x80 && |
1194 | !(addr->s6_addr[2] | addr->s6_addr[3] | addr->s6_addr[4] | | |
1195 | addr->s6_addr[5] | addr->s6_addr[6] | addr->s6_addr[7]); | |
6d1a4f16 JP |
1196 | #endif |
1197 | } | |
1198 | ||
c2b878e0 TLSC |
1199 | static inline void |
1200 | ipv6_multicast_to_ethernet(struct eth_addr *eth, const struct in6_addr *ip6) | |
1201 | { | |
1202 | eth->ea[0] = 0x33; | |
1203 | eth->ea[1] = 0x33; | |
1204 | eth->ea[2] = ip6->s6_addr[12]; | |
1205 | eth->ea[3] = ip6->s6_addr[13]; | |
1206 | eth->ea[4] = ip6->s6_addr[14]; | |
1207 | eth->ea[5] = ip6->s6_addr[15]; | |
1208 | } | |
1209 | ||
e8c16d83 SH |
1210 | static inline bool dl_type_is_ip_any(ovs_be16 dl_type) |
1211 | { | |
1212 | return dl_type == htons(ETH_TYPE_IP) | |
1213 | || dl_type == htons(ETH_TYPE_IPV6); | |
1214 | } | |
1215 | ||
a36de779 | 1216 | /* Tunnel header */ |
e5a1caee | 1217 | |
a36de779 PS |
1218 | /* GRE protocol header */ |
1219 | struct gre_base_hdr { | |
1220 | ovs_be16 flags; | |
1221 | ovs_be16 protocol; | |
1222 | }; | |
1223 | ||
1224 | #define GRE_CSUM 0x8000 | |
1225 | #define GRE_ROUTING 0x4000 | |
1226 | #define GRE_KEY 0x2000 | |
1227 | #define GRE_SEQ 0x1000 | |
1228 | #define GRE_STRICT 0x0800 | |
1229 | #define GRE_REC 0x0700 | |
1230 | #define GRE_FLAGS 0x00F8 | |
1231 | #define GRE_VERSION 0x0007 | |
1232 | ||
1233 | /* VXLAN protocol header */ | |
1234 | struct vxlanhdr { | |
439f39cb GS |
1235 | union { |
1236 | ovs_16aligned_be32 vx_flags; /* VXLAN flags. */ | |
1237 | struct { | |
1238 | uint8_t flags; /* VXLAN GPE flags. */ | |
1239 | uint8_t reserved[2]; /* 16 bits reserved. */ | |
1240 | uint8_t next_protocol; /* Next Protocol field for VXLAN GPE. */ | |
1241 | } vx_gpe; | |
1242 | }; | |
a36de779 PS |
1243 | ovs_16aligned_be32 vx_vni; |
1244 | }; | |
439f39cb | 1245 | BUILD_ASSERT_DECL(sizeof(struct vxlanhdr) == 8); |
a36de779 PS |
1246 | |
1247 | #define VXLAN_FLAGS 0x08000000 /* struct vxlanhdr.vx_flags required value. */ | |
1248 | ||
439f39cb GS |
1249 | /* |
1250 | * VXLAN Generic Protocol Extension (VXLAN_F_GPE): | |
1251 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1252 | * |R|R|Ver|I|P|R|O| Reserved |Next Protocol | | |
1253 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1254 | * | VXLAN Network Identifier (VNI) | Reserved | | |
1255 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1256 | * | |
1257 | * Ver = Version. Indicates VXLAN GPE protocol version. | |
1258 | * | |
1259 | * P = Next Protocol Bit. The P bit is set to indicate that the | |
1260 | * Next Protocol field is present. | |
1261 | * | |
1262 | * O = OAM Flag Bit. The O bit is set to indicate that the packet | |
1263 | * is an OAM packet. | |
1264 | * | |
1265 | * Next Protocol = This 8 bit field indicates the protocol header | |
1266 | * immediately following the VXLAN GPE header. | |
1267 | * | |
1268 | * https://tools.ietf.org/html/draft-ietf-nvo3-vxlan-gpe-01 | |
1269 | */ | |
1270 | ||
1271 | /* Fields in struct vxlanhdr.vx_gpe.flags */ | |
1272 | #define VXLAN_GPE_FLAGS_VER 0x30 /* Version. */ | |
1273 | #define VLXAN_GPE_FLAGS_P 0x04 /* Next Protocol Bit. */ | |
1274 | #define VXLAN_GPE_FLAGS_O 0x01 /* OAM Bit. */ | |
1275 | ||
1276 | /* VXLAN-GPE header flags. */ | |
1277 | #define VXLAN_HF_VER ((1U <<29) | (1U <<28)) | |
1278 | #define VXLAN_HF_NP (1U <<26) | |
1279 | #define VXLAN_HF_OAM (1U <<24) | |
1280 | ||
1281 | #define VXLAN_GPE_USED_BITS (VXLAN_HF_VER | VXLAN_HF_NP | VXLAN_HF_OAM | \ | |
1282 | 0xff) | |
1283 | ||
1284 | /* VXLAN-GPE header Next Protocol. */ | |
1285 | #define VXLAN_GPE_NP_IPV4 0x01 | |
1286 | #define VXLAN_GPE_NP_IPV6 0x02 | |
1287 | #define VXLAN_GPE_NP_ETHERNET 0x03 | |
1288 | #define VXLAN_GPE_NP_NSH 0x04 | |
1289 | ||
1290 | #define VXLAN_F_GPE 0x4000 | |
1291 | #define VXLAN_HF_GPE 0x04000000 | |
1292 | ||
2482b0b0 JS |
1293 | /* Input values for PACKET_TYPE macros have to be in host byte order. |
1294 | * The _BE postfix indicates result is in network byte order. Otherwise result | |
1295 | * is in host byte order. */ | |
1296 | #define PACKET_TYPE(NS, NS_TYPE) ((uint32_t) ((NS) << 16 | (NS_TYPE))) | |
1297 | #define PACKET_TYPE_BE(NS, NS_TYPE) (htonl((NS) << 16 | (NS_TYPE))) | |
1298 | ||
1299 | /* Returns the host byte ordered namespace of 'packet type'. */ | |
1300 | static inline uint16_t | |
1301 | pt_ns(ovs_be32 packet_type) | |
1302 | { | |
1303 | return ntohl(packet_type) >> 16; | |
1304 | } | |
1305 | ||
1306 | /* Returns the network byte ordered namespace type of 'packet type'. */ | |
1307 | static inline ovs_be16 | |
1308 | pt_ns_type_be(ovs_be32 packet_type) | |
1309 | { | |
1310 | return be32_to_be16(packet_type); | |
1311 | } | |
1312 | ||
1313 | /* Returns the host byte ordered namespace type of 'packet type'. */ | |
1314 | static inline uint16_t | |
1315 | pt_ns_type(ovs_be32 packet_type) | |
1316 | { | |
1317 | return ntohs(pt_ns_type_be(packet_type)); | |
1318 | } | |
1319 | ||
1320 | /* Well-known packet_type field values. */ | |
1321 | enum packet_type { | |
f839892a JS |
1322 | PT_ETH = PACKET_TYPE(OFPHTN_ONF, 0x0000), /* Default PT: Ethernet */ |
1323 | PT_USE_NEXT_PROTO = PACKET_TYPE(OFPHTN_ONF, 0xfffe), /* Pseudo PT for decap. */ | |
2482b0b0 JS |
1324 | PT_IPV4 = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_IP), |
1325 | PT_IPV6 = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_IPV6), | |
1326 | PT_MPLS = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_MPLS), | |
1327 | PT_MPLS_MC = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_MPLS_MCAST), | |
3d2fbd70 | 1328 | PT_NSH = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_NSH), |
2482b0b0 JS |
1329 | PT_UNKNOWN = PACKET_TYPE(0xffff, 0xffff), /* Unknown packet type. */ |
1330 | }; | |
1331 | ||
1332 | ||
ac6d120f | 1333 | void ipv6_format_addr(const struct in6_addr *addr, struct ds *); |
9ac0aada JR |
1334 | void ipv6_format_addr_bracket(const struct in6_addr *addr, struct ds *, |
1335 | bool bracket); | |
ac6d120f JP |
1336 | void ipv6_format_mapped(const struct in6_addr *addr, struct ds *); |
1337 | void ipv6_format_masked(const struct in6_addr *addr, | |
1338 | const struct in6_addr *mask, struct ds *); | |
bed610e8 | 1339 | const char * ipv6_string_mapped(char *addr_str, const struct in6_addr *addr); |
d31f1109 JP |
1340 | struct in6_addr ipv6_addr_bitand(const struct in6_addr *src, |
1341 | const struct in6_addr *mask); | |
b0ad27f3 JP |
1342 | struct in6_addr ipv6_addr_bitxor(const struct in6_addr *a, |
1343 | const struct in6_addr *b); | |
1344 | bool ipv6_is_zero(const struct in6_addr *a); | |
d31f1109 JP |
1345 | struct in6_addr ipv6_create_mask(int mask); |
1346 | int ipv6_count_cidr_bits(const struct in6_addr *netmask); | |
1347 | bool ipv6_is_cidr(const struct in6_addr *netmask); | |
2b02db1b | 1348 | |
e463f310 MM |
1349 | enum port_flags { |
1350 | PORT_OPTIONAL, | |
1351 | PORT_REQUIRED, | |
1352 | PORT_FORBIDDEN, | |
1353 | }; | |
1354 | ||
1355 | char *ipv46_parse(const char *s, enum port_flags flags, | |
1356 | struct sockaddr_storage *ss) | |
1357 | OVS_WARN_UNUSED_RESULT; | |
1358 | ||
2b02db1b | 1359 | bool ipv6_parse(const char *s, struct in6_addr *ip); |
fac5bd3c JP |
1360 | char *ipv6_parse_masked(const char *s, struct in6_addr *ipv6, |
1361 | struct in6_addr *mask); | |
2b02db1b BP |
1362 | char *ipv6_parse_cidr(const char *s, struct in6_addr *ip, unsigned int *plen) |
1363 | OVS_WARN_UNUSED_RESULT; | |
7dc88496 NS |
1364 | char *ipv6_parse_masked_len(const char *s, int *n, struct in6_addr *ipv6, |
1365 | struct in6_addr *mask); | |
1366 | char *ipv6_parse_cidr_len(const char *s, int *n, struct in6_addr *ip, | |
1367 | unsigned int *plen) | |
1368 | OVS_WARN_UNUSED_RESULT; | |
d31f1109 | 1369 | |
74ff3298 JR |
1370 | void *eth_compose(struct dp_packet *, const struct eth_addr eth_dst, |
1371 | const struct eth_addr eth_src, uint16_t eth_type, | |
5de1bb5c | 1372 | size_t size); |
74ff3298 JR |
1373 | void *snap_compose(struct dp_packet *, const struct eth_addr eth_dst, |
1374 | const struct eth_addr eth_src, | |
5de1bb5c | 1375 | unsigned int oui, uint16_t snap_type, size_t size); |
cf62fa4c | 1376 | void packet_set_ipv4(struct dp_packet *, ovs_be32 src, ovs_be32 dst, uint8_t tos, |
c97664b3 | 1377 | uint8_t ttl); |
fc052306 ZB |
1378 | void packet_set_ipv4_addr(struct dp_packet *packet, ovs_16aligned_be32 *addr, |
1379 | ovs_be32 new_addr); | |
932c96b7 JR |
1380 | void packet_set_ipv6(struct dp_packet *, const struct in6_addr *src, |
1381 | const struct in6_addr *dst, uint8_t tc, | |
038341d1 | 1382 | ovs_be32 fl, uint8_t hlmit); |
0e29d884 DB |
1383 | void packet_set_ipv6_addr(struct dp_packet *packet, uint8_t proto, |
1384 | ovs_16aligned_be32 addr[4], | |
1385 | const struct in6_addr *new_addr, | |
1386 | bool recalculate_csum); | |
cf62fa4c PS |
1387 | void packet_set_tcp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst); |
1388 | void packet_set_udp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst); | |
1389 | void packet_set_sctp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst); | |
b8786b18 | 1390 | void packet_set_icmp(struct dp_packet *, uint8_t type, uint8_t code); |
932c96b7 | 1391 | void packet_set_nd(struct dp_packet *, const struct in6_addr *target, |
74ff3298 | 1392 | const struct eth_addr sll, const struct eth_addr tll); |
40f78b38 | 1393 | |
a66733a8 | 1394 | void packet_format_tcp_flags(struct ds *, uint16_t); |
61bf6666 | 1395 | const char *packet_tcp_flag_to_string(uint32_t flag); |
6335d074 | 1396 | void compose_arp__(struct dp_packet *); |
eb0b295e | 1397 | void compose_arp(struct dp_packet *, uint16_t arp_op, |
74ff3298 JR |
1398 | const struct eth_addr arp_sha, |
1399 | const struct eth_addr arp_tha, bool broadcast, | |
eb0b295e | 1400 | ovs_be32 arp_spa, ovs_be32 arp_tpa); |
16187903 JP |
1401 | void compose_nd_ns(struct dp_packet *, const struct eth_addr eth_src, |
1402 | const struct in6_addr *ipv6_src, | |
1403 | const struct in6_addr *ipv6_dst); | |
1404 | void compose_nd_na(struct dp_packet *, const struct eth_addr eth_src, | |
1405 | const struct eth_addr eth_dst, | |
1406 | const struct in6_addr *ipv6_src, | |
1407 | const struct in6_addr *ipv6_dst, | |
1408 | ovs_be32 rso_flags); | |
b24ab67c ZKL |
1409 | void compose_nd_ra(struct dp_packet *, |
1410 | const struct eth_addr eth_src, | |
1411 | const struct eth_addr eth_dst, | |
1412 | const struct in6_addr *ipv6_src, | |
1413 | const struct in6_addr *ipv6_dst, | |
1414 | uint8_t cur_hop_limit, uint8_t mo_flags, | |
1415 | ovs_be16 router_lt, ovs_be32 reachable_time, | |
1416 | ovs_be32 retrans_timer, ovs_be32 mtu); | |
1417 | void packet_put_ra_prefix_opt(struct dp_packet *, | |
1418 | uint8_t plen, uint8_t la_flags, | |
1419 | ovs_be32 valid_lifetime, | |
1420 | ovs_be32 preferred_lifetime, | |
1421 | const ovs_be128 router_prefix); | |
0292a0c9 | 1422 | uint32_t packet_csum_pseudoheader(const struct ip_header *); |
1bc3f0ed | 1423 | void IP_ECN_set_ce(struct dp_packet *pkt, bool is_ipv6); |
12113c39 | 1424 | |
ea991ad2 NS |
1425 | #define DNS_HEADER_LEN 12 |
1426 | struct dns_header { | |
1427 | ovs_be16 id; | |
1428 | uint8_t lo_flag; /* QR (1), OPCODE (4), AA (1), TC (1) and RD (1) */ | |
1429 | uint8_t hi_flag; /* RA (1), Z (3) and RCODE (4) */ | |
1430 | ovs_be16 qdcount; /* Num of entries in the question section. */ | |
1431 | ovs_be16 ancount; /* Num of resource records in the answer section. */ | |
1432 | ||
1433 | /* Num of name server records in the authority record section. */ | |
1434 | ovs_be16 nscount; | |
1435 | ||
1436 | /* Num of resource records in the additional records section. */ | |
1437 | ovs_be16 arcount; | |
1438 | }; | |
1439 | ||
1440 | BUILD_ASSERT_DECL(DNS_HEADER_LEN == sizeof(struct dns_header)); | |
1441 | ||
1442 | #define DNS_QUERY_TYPE_A 0x01 | |
1443 | #define DNS_QUERY_TYPE_AAAA 0x1c | |
1444 | #define DNS_QUERY_TYPE_ANY 0xff | |
1445 | ||
1446 | #define DNS_CLASS_IN 0x01 | |
1447 | #define DNS_DEFAULT_RR_TTL 3600 | |
1448 | ||
064af421 | 1449 | #endif /* packets.h */ |