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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; |
594570ea | 38 | struct conn; |
d31f1109 | 39 | struct ds; |
b9e8b45a | 40 | |
59781952 JR |
41 | /* Purely internal to OVS userspace. These flags should never be exposed to |
42 | * the outside world and so aren't included in the flags mask. */ | |
43 | ||
44 | /* Tunnel information is in userspace datapath format. */ | |
45 | #define FLOW_TNL_F_UDPIF (1 << 4) | |
46 | ||
ffe4c74f JB |
47 | static inline bool ipv6_addr_is_set(const struct in6_addr *addr); |
48 | ||
49 | static inline bool | |
50 | flow_tnl_dst_is_set(const struct flow_tnl *tnl) | |
51 | { | |
52 | return tnl->ip_dst || ipv6_addr_is_set(&tnl->ipv6_dst); | |
53 | } | |
54 | ||
3f82ac1f TZ |
55 | static inline bool |
56 | flow_tnl_src_is_set(const struct flow_tnl *tnl) | |
57 | { | |
58 | return tnl->ip_src || ipv6_addr_is_set(&tnl->ipv6_src); | |
59 | } | |
60 | ||
ffe4c74f JB |
61 | struct in6_addr flow_tnl_dst(const struct flow_tnl *tnl); |
62 | struct in6_addr flow_tnl_src(const struct flow_tnl *tnl); | |
63 | ||
59781952 JR |
64 | /* Returns an offset to 'src' covering all the meaningful fields in 'src'. */ |
65 | static inline size_t | |
66 | flow_tnl_size(const struct flow_tnl *src) | |
67 | { | |
ffe4c74f JB |
68 | if (!flow_tnl_dst_is_set(src)) { |
69 | /* Covers ip_dst and ipv6_dst only. */ | |
59781952 JR |
70 | return offsetof(struct flow_tnl, ip_src); |
71 | } | |
72 | if (src->flags & FLOW_TNL_F_UDPIF) { | |
73 | /* Datapath format, cover all options we have. */ | |
74 | return offsetof(struct flow_tnl, metadata.opts) | |
75 | + src->metadata.present.len; | |
76 | } | |
77 | if (!src->metadata.present.map) { | |
78 | /* No TLVs, opts is irrelevant. */ | |
79 | return offsetof(struct flow_tnl, metadata.opts); | |
80 | } | |
81 | /* Have decoded TLVs, opts is relevant. */ | |
82 | return sizeof *src; | |
83 | } | |
84 | ||
85 | /* Copy flow_tnl, but avoid copying unused portions of tun_metadata. Unused | |
86 | * data in 'dst' is NOT cleared, so this must not be used in cases where the | |
87 | * uninitialized portion may be hashed over. */ | |
88 | static inline void | |
89 | flow_tnl_copy__(struct flow_tnl *dst, const struct flow_tnl *src) | |
90 | { | |
91 | memcpy(dst, src, flow_tnl_size(src)); | |
92 | } | |
93 | ||
94 | static inline bool | |
95 | flow_tnl_equal(const struct flow_tnl *a, const struct flow_tnl *b) | |
96 | { | |
97 | size_t a_size = flow_tnl_size(a); | |
98 | ||
99 | return a_size == flow_tnl_size(b) && !memcmp(a, b, a_size); | |
100 | } | |
101 | ||
758c456d JR |
102 | /* Datapath packet metadata */ |
103 | struct pkt_metadata { | |
99fc16c0 | 104 | PADDED_MEMBERS_CACHELINE_MARKER(CACHE_LINE_SIZE, cacheline0, |
572f732a AZ |
105 | uint32_t recirc_id; /* Recirculation id carried with the |
106 | recirculating packets. 0 for packets | |
107 | received from the wire. */ | |
108 | uint32_t dp_hash; /* hash value computed by the recirculation | |
109 | action. */ | |
758c456d JR |
110 | uint32_t skb_priority; /* Packet priority for QoS. */ |
111 | uint32_t pkt_mark; /* Packet mark. */ | |
2a28ccc8 | 112 | uint8_t ct_state; /* Connection state. */ |
daf4d3c1 | 113 | bool ct_orig_tuple_ipv6; |
07659514 | 114 | uint16_t ct_zone; /* Connection zone. */ |
8e53fe8c | 115 | uint32_t ct_mark; /* Connection mark. */ |
9daf2348 | 116 | ovs_u128 ct_label; /* Connection label. */ |
99fc16c0 | 117 | union flow_in_port in_port; /* Input port. */ |
594570ea DB |
118 | struct conn *conn; /* Cached conntrack connection. */ |
119 | bool reply; /* True if reply direction. */ | |
120 | bool icmp_related; /* True if ICMP related. */ | |
99fc16c0 BB |
121 | ); |
122 | ||
123 | PADDED_MEMBERS_CACHELINE_MARKER(CACHE_LINE_SIZE, cacheline1, | |
daf4d3c1 JR |
124 | union { /* Populated only for non-zero 'ct_state'. */ |
125 | struct ovs_key_ct_tuple_ipv4 ipv4; | |
126 | struct ovs_key_ct_tuple_ipv6 ipv6; /* Used only if */ | |
127 | } ct_orig_tuple; /* 'ct_orig_tuple_ipv6' is set */ | |
99fc16c0 BB |
128 | ); |
129 | ||
130 | PADDED_MEMBERS_CACHELINE_MARKER(CACHE_LINE_SIZE, cacheline2, | |
59781952 JR |
131 | struct flow_tnl tunnel; /* Encapsulating tunnel parameters. Note that |
132 | * if 'ip_dst' == 0, the rest of the fields may | |
133 | * be uninitialized. */ | |
99fc16c0 | 134 | ); |
758c456d JR |
135 | }; |
136 | ||
99fc16c0 BB |
137 | BUILD_ASSERT_DECL(offsetof(struct pkt_metadata, cacheline0) == 0); |
138 | BUILD_ASSERT_DECL(offsetof(struct pkt_metadata, cacheline1) == | |
139 | CACHE_LINE_SIZE); | |
140 | BUILD_ASSERT_DECL(offsetof(struct pkt_metadata, cacheline2) == | |
141 | 2 * CACHE_LINE_SIZE); | |
142 | ||
6b241d64 PS |
143 | static inline void |
144 | pkt_metadata_init_tnl(struct pkt_metadata *md) | |
145 | { | |
146 | /* Zero up through the tunnel metadata options. The length and table | |
147 | * are before this and as long as they are empty, the options won't | |
148 | * be looked at. */ | |
149 | memset(md, 0, offsetof(struct pkt_metadata, tunnel.metadata.opts)); | |
150 | } | |
151 | ||
594570ea DB |
152 | static inline void |
153 | pkt_metadata_init_conn(struct pkt_metadata *md) | |
154 | { | |
155 | md->conn = NULL; | |
156 | } | |
157 | ||
35303d71 JG |
158 | static inline void |
159 | pkt_metadata_init(struct pkt_metadata *md, odp_port_t port) | |
160 | { | |
af697f26 DDP |
161 | /* This is called for every packet in userspace datapath and affects |
162 | * performance if all the metadata is initialized. Hence, fields should | |
163 | * only be zeroed out when necessary. | |
164 | * | |
165 | * Initialize only till ct_state. Once the ct_state is zeroed out rest | |
166 | * of ct fields will not be looked at unless ct_state != 0. | |
167 | */ | |
168 | memset(md, 0, offsetof(struct pkt_metadata, ct_orig_tuple_ipv6)); | |
169 | ||
35303d71 JG |
170 | /* It can be expensive to zero out all of the tunnel metadata. However, |
171 | * we can just zero out ip_dst and the rest of the data will never be | |
172 | * looked at. */ | |
35303d71 | 173 | md->tunnel.ip_dst = 0; |
ffe4c74f | 174 | md->tunnel.ipv6_dst = in6addr_any; |
35303d71 | 175 | md->in_port.odp_port = port; |
594570ea | 176 | md->conn = NULL; |
35303d71 | 177 | } |
b5e7e61a | 178 | |
a90ed026 | 179 | /* This function prefetches the cachelines touched by pkt_metadata_init() |
2daae85a BB |
180 | * and pkt_metadata_init_tnl(). For performance reasons the two functions |
181 | * should be kept in sync. */ | |
a90ed026 DDP |
182 | static inline void |
183 | pkt_metadata_prefetch_init(struct pkt_metadata *md) | |
184 | { | |
99fc16c0 BB |
185 | /* Prefetch cacheline0 as members till ct_state and odp_port will |
186 | * be initialized later in pkt_metadata_init(). */ | |
187 | OVS_PREFETCH(md->cacheline0); | |
188 | ||
2daae85a BB |
189 | /* Prefetch cacheline1 as members of this cacheline will be zeroed out |
190 | * in pkt_metadata_init_tnl(). */ | |
191 | OVS_PREFETCH(md->cacheline1); | |
192 | ||
99fc16c0 BB |
193 | /* Prefetch cachline2 as ip_dst & ipv6_dst fields will be initialized. */ |
194 | OVS_PREFETCH(md->cacheline2); | |
a90ed026 DDP |
195 | } |
196 | ||
76343538 BP |
197 | bool dpid_from_string(const char *s, uint64_t *dpidp); |
198 | ||
064af421 BP |
199 | #define ETH_ADDR_LEN 6 |
200 | ||
74ff3298 | 201 | static const struct eth_addr eth_addr_broadcast OVS_UNUSED |
134fefa4 | 202 | = ETH_ADDR_C(ff,ff,ff,ff,ff,ff); |
064af421 | 203 | |
74ff3298 | 204 | static const struct eth_addr eth_addr_exact OVS_UNUSED |
134fefa4 | 205 | = ETH_ADDR_C(ff,ff,ff,ff,ff,ff); |
eb0b295e | 206 | |
74ff3298 | 207 | static const struct eth_addr eth_addr_zero OVS_UNUSED |
134fefa4 | 208 | = ETH_ADDR_C(00,00,00,00,00,00); |
b2342f7a | 209 | static const struct eth_addr64 eth_addr64_zero OVS_UNUSED |
134fefa4 | 210 | = ETH_ADDR64_C(00,00,00,00,00,00,00,00); |
ba186119 | 211 | |
74ff3298 | 212 | static const struct eth_addr eth_addr_stp OVS_UNUSED |
134fefa4 | 213 | = ETH_ADDR_C(01,80,c2,00,00,00); |
c25c91fd | 214 | |
74ff3298 | 215 | static const struct eth_addr eth_addr_lacp OVS_UNUSED |
134fefa4 | 216 | = ETH_ADDR_C(01,80,c2,00,00,02); |
de8d2ef9 | 217 | |
74ff3298 | 218 | static const struct eth_addr eth_addr_bfd OVS_UNUSED |
134fefa4 | 219 | = ETH_ADDR_C(00,23,20,00,00,01); |
74ff3298 JR |
220 | |
221 | static inline bool eth_addr_is_broadcast(const struct eth_addr a) | |
064af421 | 222 | { |
74ff3298 | 223 | return (a.be16[0] & a.be16[1] & a.be16[2]) == htons(0xffff); |
064af421 BP |
224 | } |
225 | ||
74ff3298 | 226 | static inline bool eth_addr_is_multicast(const struct eth_addr a) |
064af421 | 227 | { |
74ff3298 | 228 | return a.ea[0] & 1; |
064af421 | 229 | } |
74ff3298 JR |
230 | |
231 | static inline bool eth_addr_is_local(const struct eth_addr a) | |
064af421 | 232 | { |
70150daf JG |
233 | /* Local if it is either a locally administered address or a Nicira random |
234 | * address. */ | |
74ff3298 JR |
235 | return a.ea[0] & 2 |
236 | || (a.be16[0] == htons(0x0023) | |
237 | && (a.be16[1] & htons(0xff80)) == htons(0x2080)); | |
064af421 | 238 | } |
74ff3298 | 239 | static inline bool eth_addr_is_zero(const struct eth_addr a) |
064af421 | 240 | { |
74ff3298 | 241 | return !(a.be16[0] | a.be16[1] | a.be16[2]); |
064af421 | 242 | } |
b2342f7a BP |
243 | static inline bool eth_addr64_is_zero(const struct eth_addr64 a) |
244 | { | |
245 | return !(a.be16[0] | a.be16[1] | a.be16[2] | a.be16[3]); | |
246 | } | |
3b4d8ad3 | 247 | |
74ff3298 | 248 | static inline int eth_mask_is_exact(const struct eth_addr a) |
3b4d8ad3 | 249 | { |
74ff3298 | 250 | return (a.be16[0] & a.be16[1] & a.be16[2]) == htons(0xffff); |
3b4d8ad3 JS |
251 | } |
252 | ||
74ff3298 JR |
253 | static inline int eth_addr_compare_3way(const struct eth_addr a, |
254 | const struct eth_addr b) | |
130f6e5f | 255 | { |
74ff3298 | 256 | return memcmp(&a, &b, sizeof a); |
130f6e5f | 257 | } |
b2342f7a BP |
258 | static inline int eth_addr64_compare_3way(const struct eth_addr64 a, |
259 | const struct eth_addr64 b) | |
260 | { | |
261 | return memcmp(&a, &b, sizeof a); | |
262 | } | |
74ff3298 JR |
263 | |
264 | static inline bool eth_addr_equals(const struct eth_addr a, | |
265 | const struct eth_addr b) | |
064af421 | 266 | { |
130f6e5f | 267 | return !eth_addr_compare_3way(a, b); |
064af421 | 268 | } |
b2342f7a BP |
269 | static inline bool eth_addr64_equals(const struct eth_addr64 a, |
270 | const struct eth_addr64 b) | |
271 | { | |
272 | return !eth_addr64_compare_3way(a, b); | |
273 | } | |
74ff3298 JR |
274 | |
275 | static inline bool eth_addr_equal_except(const struct eth_addr a, | |
276 | const struct eth_addr b, | |
277 | const struct eth_addr mask) | |
3b4d8ad3 | 278 | { |
74ff3298 JR |
279 | return !(((a.be16[0] ^ b.be16[0]) & mask.be16[0]) |
280 | || ((a.be16[1] ^ b.be16[1]) & mask.be16[1]) | |
281 | || ((a.be16[2] ^ b.be16[2]) & mask.be16[2])); | |
3b4d8ad3 | 282 | } |
74ff3298 JR |
283 | |
284 | static inline uint64_t eth_addr_to_uint64(const struct eth_addr ea) | |
064af421 | 285 | { |
74ff3298 JR |
286 | return (((uint64_t) ntohs(ea.be16[0]) << 32) |
287 | | ((uint64_t) ntohs(ea.be16[1]) << 16) | |
288 | | ntohs(ea.be16[2])); | |
064af421 | 289 | } |
74ff3298 JR |
290 | |
291 | static inline uint64_t eth_addr_vlan_to_uint64(const struct eth_addr ea, | |
7e36ac42 AZ |
292 | uint16_t vlan) |
293 | { | |
294 | return (((uint64_t)vlan << 48) | eth_addr_to_uint64(ea)); | |
295 | } | |
74ff3298 JR |
296 | |
297 | static inline void eth_addr_from_uint64(uint64_t x, struct eth_addr *ea) | |
298 | { | |
299 | ea->be16[0] = htons(x >> 32); | |
37ba4764 AC |
300 | ea->be16[1] = htons((x & 0xFFFF0000) >> 16); |
301 | ea->be16[2] = htons(x & 0xFFFF); | |
74ff3298 JR |
302 | } |
303 | ||
304 | static inline struct eth_addr eth_addr_invert(const struct eth_addr src) | |
064af421 | 305 | { |
74ff3298 JR |
306 | struct eth_addr dst; |
307 | ||
308 | for (int i = 0; i < ARRAY_SIZE(src.be16); i++) { | |
309 | dst.be16[i] = ~src.be16[i]; | |
310 | } | |
311 | ||
312 | return dst; | |
064af421 | 313 | } |
74ff3298 JR |
314 | |
315 | static inline void eth_addr_mark_random(struct eth_addr *ea) | |
064af421 | 316 | { |
74ff3298 JR |
317 | ea->ea[0] &= ~1; /* Unicast. */ |
318 | ea->ea[0] |= 2; /* Private. */ | |
064af421 | 319 | } |
74ff3298 JR |
320 | |
321 | static inline void eth_addr_random(struct eth_addr *ea) | |
064af421 | 322 | { |
74ff3298 | 323 | random_bytes((uint8_t *)ea, sizeof *ea); |
064af421 BP |
324 | eth_addr_mark_random(ea); |
325 | } | |
74ff3298 JR |
326 | |
327 | static inline void eth_addr_nicira_random(struct eth_addr *ea) | |
70150daf JG |
328 | { |
329 | eth_addr_random(ea); | |
330 | ||
331 | /* Set the OUI to the Nicira one. */ | |
74ff3298 JR |
332 | ea->ea[0] = 0x00; |
333 | ea->ea[1] = 0x23; | |
334 | ea->ea[2] = 0x20; | |
70150daf JG |
335 | |
336 | /* Set the top bit to indicate random Nicira address. */ | |
74ff3298 | 337 | ea->ea[3] |= 0x80; |
70150daf | 338 | } |
74ff3298 | 339 | static inline uint32_t hash_mac(const struct eth_addr ea, |
7e36ac42 AZ |
340 | const uint16_t vlan, const uint32_t basis) |
341 | { | |
342 | return hash_uint64_basis(eth_addr_vlan_to_uint64(ea, vlan), basis); | |
343 | } | |
064af421 | 344 | |
74ff3298 JR |
345 | bool eth_addr_is_reserved(const struct eth_addr); |
346 | bool eth_addr_from_string(const char *, struct eth_addr *); | |
76343538 | 347 | |
74ff3298 | 348 | void compose_rarp(struct dp_packet *, const struct eth_addr); |
b9e8b45a | 349 | |
cf62fa4c PS |
350 | void eth_push_vlan(struct dp_packet *, ovs_be16 tpid, ovs_be16 tci); |
351 | void eth_pop_vlan(struct dp_packet *); | |
7c66b273 | 352 | |
cf62fa4c | 353 | const char *eth_from_hex(const char *hex, struct dp_packet **packetp); |
74ff3298 JR |
354 | void eth_format_masked(const struct eth_addr ea, |
355 | const struct eth_addr *mask, struct ds *s); | |
e22f1753 | 356 | |
cf62fa4c PS |
357 | void set_mpls_lse(struct dp_packet *, ovs_be32 label); |
358 | void push_mpls(struct dp_packet *packet, ovs_be16 ethtype, ovs_be32 lse); | |
359 | void pop_mpls(struct dp_packet *, ovs_be16 ethtype); | |
b02475c5 | 360 | |
b676167a | 361 | void set_mpls_lse_ttl(ovs_be32 *lse, uint8_t ttl); |
b02475c5 SH |
362 | void set_mpls_lse_tc(ovs_be32 *lse, uint8_t tc); |
363 | void set_mpls_lse_label(ovs_be32 *lse, ovs_be32 label); | |
364 | void set_mpls_lse_bos(ovs_be32 *lse, uint8_t bos); | |
365 | ovs_be32 set_mpls_lse_values(uint8_t ttl, uint8_t tc, uint8_t bos, | |
366 | ovs_be32 label); | |
367 | ||
eaa71334 BP |
368 | /* Example: |
369 | * | |
74ff3298 | 370 | * struct eth_addr mac; |
eaa71334 BP |
371 | * [...] |
372 | * printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac)); | |
373 | * | |
374 | */ | |
064af421 BP |
375 | #define ETH_ADDR_FMT \ |
376 | "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8 | |
ca92d173 AC |
377 | #define ETH_ADDR_ARGS(EA) ETH_ADDR_BYTES_ARGS((EA).ea) |
378 | #define ETH_ADDR_BYTES_ARGS(EAB) \ | |
379 | (EAB)[0], (EAB)[1], (EAB)[2], (EAB)[3], (EAB)[4], (EAB)[5] | |
b0d390e5 | 380 | #define ETH_ADDR_STRLEN 17 |
064af421 | 381 | |
b2342f7a BP |
382 | /* Example: |
383 | * | |
384 | * struct eth_addr64 eui64; | |
385 | * [...] | |
386 | * printf("The EUI-64 address is "ETH_ADDR64_FMT"\n", ETH_ADDR64_ARGS(mac)); | |
387 | * | |
388 | */ | |
389 | #define ETH_ADDR64_FMT \ | |
390 | "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":" \ | |
391 | "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8 | |
392 | #define ETH_ADDR64_ARGS(EA) ETH_ADDR64_BYTES_ARGS((EA).ea64) | |
393 | #define ETH_ADDR64_BYTES_ARGS(EAB) \ | |
394 | (EAB)[0], (EAB)[1], (EAB)[2], (EAB)[3], \ | |
395 | (EAB)[4], (EAB)[5], (EAB)[6], (EAB)[7] | |
396 | #define ETH_ADDR64_STRLEN 23 | |
397 | ||
eaa71334 BP |
398 | /* Example: |
399 | * | |
400 | * char *string = "1 00:11:22:33:44:55 2"; | |
74ff3298 | 401 | * struct eth_addr mac; |
eaa71334 BP |
402 | * int a, b; |
403 | * | |
c2c28dfd BP |
404 | * if (ovs_scan(string, "%d"ETH_ADDR_SCAN_FMT"%d", |
405 | * &a, ETH_ADDR_SCAN_ARGS(mac), &b)) { | |
eaa71334 BP |
406 | * ... |
407 | * } | |
408 | */ | |
409 | #define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8 | |
74ff3298 JR |
410 | #define ETH_ADDR_SCAN_ARGS(EA) \ |
411 | &(EA).ea[0], &(EA).ea[1], &(EA).ea[2], &(EA).ea[3], &(EA).ea[4], &(EA).ea[5] | |
eaa71334 | 412 | |
064af421 BP |
413 | #define ETH_TYPE_IP 0x0800 |
414 | #define ETH_TYPE_ARP 0x0806 | |
a36de779 | 415 | #define ETH_TYPE_TEB 0x6558 |
3e34fbdd IY |
416 | #define ETH_TYPE_VLAN_8021Q 0x8100 |
417 | #define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q | |
418 | #define ETH_TYPE_VLAN_8021AD 0x88a8 | |
d31f1109 | 419 | #define ETH_TYPE_IPV6 0x86dd |
c25c91fd | 420 | #define ETH_TYPE_LACP 0x8809 |
38f7147c | 421 | #define ETH_TYPE_RARP 0x8035 |
4fba171d BP |
422 | #define ETH_TYPE_MPLS 0x8847 |
423 | #define ETH_TYPE_MPLS_MCAST 0x8848 | |
3d2fbd70 | 424 | #define ETH_TYPE_NSH 0x894f |
7dc18ae9 WT |
425 | #define ETH_TYPE_ERSPAN1 0x88be /* version 1 type II */ |
426 | #define ETH_TYPE_ERSPAN2 0x22eb /* version 2 type III */ | |
064af421 | 427 | |
b02475c5 SH |
428 | static inline bool eth_type_mpls(ovs_be16 eth_type) |
429 | { | |
430 | return eth_type == htons(ETH_TYPE_MPLS) || | |
431 | eth_type == htons(ETH_TYPE_MPLS_MCAST); | |
432 | } | |
433 | ||
d6943394 TH |
434 | static inline bool eth_type_vlan(ovs_be16 eth_type) |
435 | { | |
436 | return eth_type == htons(ETH_TYPE_VLAN_8021Q) || | |
437 | eth_type == htons(ETH_TYPE_VLAN_8021AD); | |
438 | } | |
439 | ||
440 | ||
36956a7d BP |
441 | /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame |
442 | * lengths. */ | |
443 | #define ETH_TYPE_MIN 0x600 | |
444 | ||
064af421 BP |
445 | #define ETH_HEADER_LEN 14 |
446 | #define ETH_PAYLOAD_MIN 46 | |
447 | #define ETH_PAYLOAD_MAX 1500 | |
448 | #define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN) | |
449 | #define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX) | |
450 | #define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX) | |
451 | struct eth_header { | |
74ff3298 JR |
452 | struct eth_addr eth_dst; |
453 | struct eth_addr eth_src; | |
d5ca4fce | 454 | ovs_be16 eth_type; |
1620b7ea | 455 | }; |
064af421 BP |
456 | BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header)); |
457 | ||
88fc5281 JS |
458 | void push_eth(struct dp_packet *packet, const struct eth_addr *dst, |
459 | const struct eth_addr *src); | |
460 | void pop_eth(struct dp_packet *packet); | |
461 | ||
f59cb331 YY |
462 | void push_nsh(struct dp_packet *packet, const struct nsh_hdr *nsh_hdr_src); |
463 | bool pop_nsh(struct dp_packet *packet); | |
1fc11c59 | 464 | |
064af421 BP |
465 | #define LLC_DSAP_SNAP 0xaa |
466 | #define LLC_SSAP_SNAP 0xaa | |
467 | #define LLC_CNTL_SNAP 3 | |
468 | ||
469 | #define LLC_HEADER_LEN 3 | |
470 | struct llc_header { | |
471 | uint8_t llc_dsap; | |
472 | uint8_t llc_ssap; | |
473 | uint8_t llc_cntl; | |
1620b7ea | 474 | }; |
064af421 BP |
475 | BUILD_ASSERT_DECL(LLC_HEADER_LEN == sizeof(struct llc_header)); |
476 | ||
9efd308e DV |
477 | /* LLC field values used for STP frames. */ |
478 | #define STP_LLC_SSAP 0x42 | |
479 | #define STP_LLC_DSAP 0x42 | |
480 | #define STP_LLC_CNTL 0x03 | |
481 | ||
064af421 BP |
482 | #define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so |
483 | sizeof(SNAP_ORG_ETHERNET) == 3. */ | |
484 | #define SNAP_HEADER_LEN 5 | |
13b6bae6 | 485 | OVS_PACKED( |
064af421 BP |
486 | struct snap_header { |
487 | uint8_t snap_org[3]; | |
d5ca4fce | 488 | ovs_be16 snap_type; |
13b6bae6 | 489 | }); |
064af421 BP |
490 | BUILD_ASSERT_DECL(SNAP_HEADER_LEN == sizeof(struct snap_header)); |
491 | ||
492 | #define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN) | |
13b6bae6 | 493 | OVS_PACKED( |
064af421 BP |
494 | struct llc_snap_header { |
495 | struct llc_header llc; | |
496 | struct snap_header snap; | |
13b6bae6 | 497 | }); |
064af421 BP |
498 | BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header)); |
499 | ||
500 | #define VLAN_VID_MASK 0x0fff | |
33ce24ed BP |
501 | #define VLAN_VID_SHIFT 0 |
502 | ||
064af421 | 503 | #define VLAN_PCP_MASK 0xe000 |
33ce24ed | 504 | #define VLAN_PCP_SHIFT 13 |
064af421 | 505 | |
26233bb4 | 506 | #define VLAN_CFI 0x1000 |
e6cc0bab | 507 | #define VLAN_CFI_SHIFT 12 |
26233bb4 BP |
508 | |
509 | /* Given the vlan_tci field from an 802.1Q header, in network byte order, | |
510 | * returns the VLAN ID in host byte order. */ | |
511 | static inline uint16_t | |
d5ca4fce | 512 | vlan_tci_to_vid(ovs_be16 vlan_tci) |
26233bb4 BP |
513 | { |
514 | return (ntohs(vlan_tci) & VLAN_VID_MASK) >> VLAN_VID_SHIFT; | |
515 | } | |
516 | ||
517 | /* Given the vlan_tci field from an 802.1Q header, in network byte order, | |
518 | * returns the priority code point (PCP) in host byte order. */ | |
519 | static inline int | |
d5ca4fce | 520 | vlan_tci_to_pcp(ovs_be16 vlan_tci) |
26233bb4 BP |
521 | { |
522 | return (ntohs(vlan_tci) & VLAN_PCP_MASK) >> VLAN_PCP_SHIFT; | |
523 | } | |
524 | ||
e6cc0bab AZ |
525 | /* Given the vlan_tci field from an 802.1Q header, in network byte order, |
526 | * returns the Canonical Format Indicator (CFI). */ | |
527 | static inline int | |
528 | vlan_tci_to_cfi(ovs_be16 vlan_tci) | |
529 | { | |
530 | return (vlan_tci & htons(VLAN_CFI)) != 0; | |
531 | } | |
532 | ||
064af421 BP |
533 | #define VLAN_HEADER_LEN 4 |
534 | struct vlan_header { | |
d5ca4fce EJ |
535 | ovs_be16 vlan_tci; /* Lowest 12 bits are VLAN ID. */ |
536 | ovs_be16 vlan_next_type; | |
064af421 BP |
537 | }; |
538 | BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header)); | |
539 | ||
540 | #define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN) | |
541 | struct vlan_eth_header { | |
74ff3298 JR |
542 | struct eth_addr veth_dst; |
543 | struct eth_addr veth_src; | |
d5ca4fce EJ |
544 | ovs_be16 veth_type; /* Always htons(ETH_TYPE_VLAN). */ |
545 | ovs_be16 veth_tci; /* Lowest 12 bits are VLAN ID. */ | |
546 | ovs_be16 veth_next_type; | |
1620b7ea | 547 | }; |
064af421 BP |
548 | BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header)); |
549 | ||
b02475c5 SH |
550 | /* MPLS related definitions */ |
551 | #define MPLS_TTL_MASK 0x000000ff | |
552 | #define MPLS_TTL_SHIFT 0 | |
553 | ||
554 | #define MPLS_BOS_MASK 0x00000100 | |
555 | #define MPLS_BOS_SHIFT 8 | |
556 | ||
557 | #define MPLS_TC_MASK 0x00000e00 | |
558 | #define MPLS_TC_SHIFT 9 | |
559 | ||
560 | #define MPLS_LABEL_MASK 0xfffff000 | |
561 | #define MPLS_LABEL_SHIFT 12 | |
562 | ||
563 | #define MPLS_HLEN 4 | |
564 | ||
565 | struct mpls_hdr { | |
5fa008d4 | 566 | ovs_16aligned_be32 mpls_lse; |
b02475c5 SH |
567 | }; |
568 | BUILD_ASSERT_DECL(MPLS_HLEN == sizeof(struct mpls_hdr)); | |
569 | ||
570 | /* Given a mpls label stack entry in network byte order | |
571 | * return mpls label in host byte order */ | |
572 | static inline uint32_t | |
573 | mpls_lse_to_label(ovs_be32 mpls_lse) | |
574 | { | |
575 | return (ntohl(mpls_lse) & MPLS_LABEL_MASK) >> MPLS_LABEL_SHIFT; | |
576 | } | |
577 | ||
578 | /* Given a mpls label stack entry in network byte order | |
579 | * return mpls tc */ | |
580 | static inline uint8_t | |
581 | mpls_lse_to_tc(ovs_be32 mpls_lse) | |
582 | { | |
583 | return (ntohl(mpls_lse) & MPLS_TC_MASK) >> MPLS_TC_SHIFT; | |
584 | } | |
585 | ||
586 | /* Given a mpls label stack entry in network byte order | |
587 | * return mpls ttl */ | |
588 | static inline uint8_t | |
589 | mpls_lse_to_ttl(ovs_be32 mpls_lse) | |
590 | { | |
591 | return (ntohl(mpls_lse) & MPLS_TTL_MASK) >> MPLS_TTL_SHIFT; | |
592 | } | |
593 | ||
283dcf85 JH |
594 | /* Set label in mpls lse. */ |
595 | static inline void | |
596 | flow_set_mpls_lse_label(ovs_be32 *mpls_lse, uint32_t label) | |
597 | { | |
598 | *mpls_lse &= ~htonl(MPLS_LABEL_MASK); | |
599 | *mpls_lse |= htonl(label << MPLS_LABEL_SHIFT); | |
600 | } | |
601 | ||
602 | /* Set TC in mpls lse. */ | |
603 | static inline void | |
604 | flow_set_mpls_lse_tc(ovs_be32 *mpls_lse, uint8_t tc) | |
605 | { | |
606 | *mpls_lse &= ~htonl(MPLS_TC_MASK); | |
607 | *mpls_lse |= htonl((tc & 0x7) << MPLS_TC_SHIFT); | |
608 | } | |
609 | ||
610 | /* Set BOS in mpls lse. */ | |
611 | static inline void | |
612 | flow_set_mpls_lse_bos(ovs_be32 *mpls_lse, uint8_t bos) | |
613 | { | |
614 | *mpls_lse &= ~htonl(MPLS_BOS_MASK); | |
615 | *mpls_lse |= htonl((bos & 0x1) << MPLS_BOS_SHIFT); | |
616 | } | |
617 | ||
b02475c5 SH |
618 | /* Set TTL in mpls lse. */ |
619 | static inline void | |
620 | flow_set_mpls_lse_ttl(ovs_be32 *mpls_lse, uint8_t ttl) | |
621 | { | |
622 | *mpls_lse &= ~htonl(MPLS_TTL_MASK); | |
623 | *mpls_lse |= htonl(ttl << MPLS_TTL_SHIFT); | |
624 | } | |
625 | ||
626 | /* Given a mpls label stack entry in network byte order | |
627 | * return mpls BoS bit */ | |
628 | static inline uint8_t | |
629 | mpls_lse_to_bos(ovs_be32 mpls_lse) | |
630 | { | |
631 | return (mpls_lse & htonl(MPLS_BOS_MASK)) != 0; | |
632 | } | |
633 | ||
ed36537e | 634 | #define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32 |
064af421 | 635 | #define IP_ARGS(ip) \ |
ed36537e BP |
636 | ntohl(ip) >> 24, \ |
637 | (ntohl(ip) >> 16) & 0xff, \ | |
638 | (ntohl(ip) >> 8) & 0xff, \ | |
639 | ntohl(ip) & 0xff | |
064af421 | 640 | |
3bffc610 BP |
641 | /* Example: |
642 | * | |
643 | * char *string = "1 33.44.55.66 2"; | |
644 | * ovs_be32 ip; | |
645 | * int a, b; | |
646 | * | |
c2c28dfd | 647 | * if (ovs_scan(string, "%d"IP_SCAN_FMT"%d", &a, IP_SCAN_ARGS(&ip), &b)) { |
3bffc610 BP |
648 | * ... |
649 | * } | |
650 | */ | |
651 | #define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8 | |
652 | #define IP_SCAN_ARGS(ip) \ | |
653 | ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \ | |
654 | &((uint8_t *) ip)[1], \ | |
655 | &((uint8_t *) ip)[2], \ | |
656 | &((uint8_t *) ip)[3] | |
3bffc610 | 657 | |
e2bfcad6 | 658 | #define IP_PORT_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8":%"SCNu16 |
659 | #define IP_PORT_SCAN_ARGS(ip, port) \ | |
660 | ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \ | |
661 | &((uint8_t *) ip)[1], \ | |
662 | &((uint8_t *) ip)[2], \ | |
663 | &((uint8_t *) ip)[3], \ | |
664 | ((void) (ovs_be16) *(port), (uint16_t *) port) | |
665 | ||
0596e897 BP |
666 | /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N |
667 | * high-order 1-bits and 32-N low-order 0-bits. */ | |
668 | static inline bool | |
669 | ip_is_cidr(ovs_be32 netmask) | |
670 | { | |
671 | uint32_t x = ~ntohl(netmask); | |
672 | return !(x & (x + 1)); | |
673 | } | |
b37e6334 BP |
674 | static inline bool |
675 | ip_is_multicast(ovs_be32 ip) | |
676 | { | |
677 | return (ip & htonl(0xf0000000)) == htonl(0xe0000000); | |
678 | } | |
7e598a7d FL |
679 | static inline bool |
680 | ip_is_local_multicast(ovs_be32 ip) | |
681 | { | |
682 | return (ip & htonl(0xffffff00)) == htonl(0xe0000000); | |
683 | } | |
aad29cd1 BP |
684 | int ip_count_cidr_bits(ovs_be32 netmask); |
685 | void ip_format_masked(ovs_be32 ip, ovs_be32 mask, struct ds *); | |
2b02db1b | 686 | bool ip_parse(const char *s, ovs_be32 *ip); |
e2bfcad6 | 687 | char *ip_parse_port(const char *s, ovs_be32 *ip, ovs_be16 *port) |
688 | OVS_WARN_UNUSED_RESULT; | |
61440451 BP |
689 | char *ip_parse_masked(const char *s, ovs_be32 *ip, ovs_be32 *mask) |
690 | OVS_WARN_UNUSED_RESULT; | |
2b02db1b BP |
691 | char *ip_parse_cidr(const char *s, ovs_be32 *ip, unsigned int *plen) |
692 | OVS_WARN_UNUSED_RESULT; | |
7dc88496 NS |
693 | char *ip_parse_masked_len(const char *s, int *n, ovs_be32 *ip, ovs_be32 *mask) |
694 | OVS_WARN_UNUSED_RESULT; | |
695 | char *ip_parse_cidr_len(const char *s, int *n, ovs_be32 *ip, | |
696 | unsigned int *plen) | |
697 | OVS_WARN_UNUSED_RESULT; | |
0596e897 | 698 | |
064af421 BP |
699 | #define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4) |
700 | #define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15) | |
701 | #define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl)) | |
702 | ||
6c99379e BP |
703 | #ifndef IPPROTO_SCTP |
704 | #define IPPROTO_SCTP 132 | |
705 | #endif | |
706 | ||
81f97b1e JR |
707 | #ifndef IPPROTO_DCCP |
708 | #define IPPROTO_DCCP 33 | |
709 | #endif | |
710 | ||
711 | #ifndef IPPROTO_IGMP | |
712 | #define IPPROTO_IGMP 2 | |
713 | #endif | |
714 | ||
715 | #ifndef IPPROTO_UDPLITE | |
716 | #define IPPROTO_UDPLITE 136 | |
717 | #endif | |
718 | ||
f1193301 | 719 | /* TOS fields. */ |
495fe264 JG |
720 | #define IP_ECN_NOT_ECT 0x0 |
721 | #define IP_ECN_ECT_1 0x01 | |
722 | #define IP_ECN_ECT_0 0x02 | |
723 | #define IP_ECN_CE 0x03 | |
f1193301 | 724 | #define IP_ECN_MASK 0x03 |
1db44453 | 725 | #define IP_DSCP_CS6 0xc0 |
f1193301 BP |
726 | #define IP_DSCP_MASK 0xfc |
727 | ||
1bc3f0ed PS |
728 | static inline int |
729 | IP_ECN_is_ce(uint8_t dsfield) | |
730 | { | |
731 | return (dsfield & IP_ECN_MASK) == IP_ECN_CE; | |
732 | } | |
733 | ||
064af421 BP |
734 | #define IP_VERSION 4 |
735 | ||
736 | #define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */ | |
737 | #define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */ | |
738 | #define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */ | |
739 | #define IP_IS_FRAGMENT(ip_frag_off) \ | |
740 | ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK)) | |
741 | ||
742 | #define IP_HEADER_LEN 20 | |
743 | struct ip_header { | |
744 | uint8_t ip_ihl_ver; | |
745 | uint8_t ip_tos; | |
d5ca4fce EJ |
746 | ovs_be16 ip_tot_len; |
747 | ovs_be16 ip_id; | |
748 | ovs_be16 ip_frag_off; | |
064af421 BP |
749 | uint8_t ip_ttl; |
750 | uint8_t ip_proto; | |
d5ca4fce | 751 | ovs_be16 ip_csum; |
7c457c33 BP |
752 | ovs_16aligned_be32 ip_src; |
753 | ovs_16aligned_be32 ip_dst; | |
064af421 BP |
754 | }; |
755 | BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header)); | |
756 | ||
caf64dc9 DDP |
757 | /* ICMPv4 types. */ |
758 | #define ICMP4_ECHO_REPLY 0 | |
759 | #define ICMP4_DST_UNREACH 3 | |
760 | #define ICMP4_SOURCEQUENCH 4 | |
761 | #define ICMP4_REDIRECT 5 | |
762 | #define ICMP4_ECHO_REQUEST 8 | |
763 | #define ICMP4_TIME_EXCEEDED 11 | |
764 | #define ICMP4_PARAM_PROB 12 | |
765 | #define ICMP4_TIMESTAMP 13 | |
766 | #define ICMP4_TIMESTAMPREPLY 14 | |
767 | #define ICMP4_INFOREQUEST 15 | |
768 | #define ICMP4_INFOREPLY 16 | |
769 | ||
c4ccff78 | 770 | #define ICMP_HEADER_LEN 8 |
064af421 BP |
771 | struct icmp_header { |
772 | uint8_t icmp_type; | |
773 | uint8_t icmp_code; | |
d5ca4fce | 774 | ovs_be16 icmp_csum; |
c4ccff78 JG |
775 | union { |
776 | struct { | |
777 | ovs_be16 id; | |
778 | ovs_be16 seq; | |
779 | } echo; | |
780 | struct { | |
781 | ovs_be16 empty; | |
782 | ovs_be16 mtu; | |
783 | } frag; | |
7c457c33 | 784 | ovs_16aligned_be32 gateway; |
c4ccff78 | 785 | } icmp_fields; |
064af421 BP |
786 | }; |
787 | BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_header)); | |
788 | ||
6c2a9306 DB |
789 | /* ICMPV4 */ |
790 | #define ICMP_ERROR_DATA_L4_LEN 8 | |
791 | ||
8e451a96 DB |
792 | #define IGMP_HEADER_LEN 8 |
793 | struct igmp_header { | |
794 | uint8_t igmp_type; | |
795 | uint8_t igmp_code; | |
796 | ovs_be16 igmp_csum; | |
797 | ovs_16aligned_be32 group; | |
798 | }; | |
799 | BUILD_ASSERT_DECL(IGMP_HEADER_LEN == sizeof(struct igmp_header)); | |
800 | ||
e3102e42 TLSC |
801 | #define IGMPV3_HEADER_LEN 8 |
802 | struct igmpv3_header { | |
803 | uint8_t type; | |
804 | uint8_t rsvr1; | |
805 | ovs_be16 csum; | |
806 | ovs_be16 rsvr2; | |
807 | ovs_be16 ngrp; | |
808 | }; | |
809 | BUILD_ASSERT_DECL(IGMPV3_HEADER_LEN == sizeof(struct igmpv3_header)); | |
810 | ||
1db44453 DC |
811 | #define IGMPV3_QUERY_HEADER_LEN 12 |
812 | struct igmpv3_query_header { | |
813 | uint8_t type; | |
814 | uint8_t max_resp; | |
815 | ovs_be16 csum; | |
816 | ovs_16aligned_be32 group; | |
817 | uint8_t srs_qrv; | |
818 | uint8_t qqic; | |
819 | ovs_be16 nsrcs; | |
820 | }; | |
821 | BUILD_ASSERT_DECL( | |
822 | IGMPV3_QUERY_HEADER_LEN == sizeof(struct igmpv3_query_header | |
823 | )); | |
824 | ||
e3102e42 TLSC |
825 | #define IGMPV3_RECORD_LEN 8 |
826 | struct igmpv3_record { | |
827 | uint8_t type; | |
828 | uint8_t aux_len; | |
829 | ovs_be16 nsrcs; | |
830 | ovs_16aligned_be32 maddr; | |
831 | }; | |
832 | BUILD_ASSERT_DECL(IGMPV3_RECORD_LEN == sizeof(struct igmpv3_record)); | |
833 | ||
8e451a96 DB |
834 | #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */ |
835 | #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */ | |
836 | #define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x12 */ | |
837 | #define IGMP_HOST_LEAVE_MESSAGE 0x17 | |
838 | #define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x12 */ | |
839 | ||
06994f87 TLSC |
840 | /* |
841 | * IGMPv3 and MLDv2 use the same codes. | |
842 | */ | |
e3102e42 TLSC |
843 | #define IGMPV3_MODE_IS_INCLUDE 1 |
844 | #define IGMPV3_MODE_IS_EXCLUDE 2 | |
845 | #define IGMPV3_CHANGE_TO_INCLUDE_MODE 3 | |
846 | #define IGMPV3_CHANGE_TO_EXCLUDE_MODE 4 | |
847 | #define IGMPV3_ALLOW_NEW_SOURCES 5 | |
848 | #define IGMPV3_BLOCK_OLD_SOURCES 6 | |
849 | ||
c6bcb685 JS |
850 | #define SCTP_HEADER_LEN 12 |
851 | struct sctp_header { | |
852 | ovs_be16 sctp_src; | |
853 | ovs_be16 sctp_dst; | |
5fa008d4 BP |
854 | ovs_16aligned_be32 sctp_vtag; |
855 | ovs_16aligned_be32 sctp_csum; | |
c6bcb685 JS |
856 | }; |
857 | BUILD_ASSERT_DECL(SCTP_HEADER_LEN == sizeof(struct sctp_header)); | |
858 | ||
064af421 BP |
859 | #define UDP_HEADER_LEN 8 |
860 | struct udp_header { | |
d5ca4fce EJ |
861 | ovs_be16 udp_src; |
862 | ovs_be16 udp_dst; | |
863 | ovs_be16 udp_len; | |
864 | ovs_be16 udp_csum; | |
064af421 BP |
865 | }; |
866 | BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header)); | |
867 | ||
bc61c7b4 IS |
868 | #define ESP_HEADER_LEN 8 |
869 | struct esp_header { | |
870 | ovs_be32 spi; | |
871 | ovs_be32 seq_no; | |
872 | }; | |
873 | BUILD_ASSERT_DECL(ESP_HEADER_LEN == sizeof(struct esp_header)); | |
874 | ||
875 | #define ESP_TRAILER_LEN 2 | |
876 | struct esp_trailer { | |
877 | uint8_t pad_len; | |
878 | uint8_t next_hdr; | |
879 | }; | |
880 | BUILD_ASSERT_DECL(ESP_TRAILER_LEN == sizeof(struct esp_trailer)); | |
881 | ||
a66733a8 JR |
882 | #define TCP_FIN 0x001 |
883 | #define TCP_SYN 0x002 | |
884 | #define TCP_RST 0x004 | |
885 | #define TCP_PSH 0x008 | |
886 | #define TCP_ACK 0x010 | |
887 | #define TCP_URG 0x020 | |
888 | #define TCP_ECE 0x040 | |
889 | #define TCP_CWR 0x080 | |
890 | #define TCP_NS 0x100 | |
064af421 | 891 | |
df9b6612 | 892 | #define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12))) |
a66733a8 | 893 | #define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff) |
419681da | 894 | #define TCP_FLAGS_BE16(tcp_ctl) ((tcp_ctl) & htons(0x0fff)) |
d84d4b88 | 895 | #define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12) |
064af421 BP |
896 | |
897 | #define TCP_HEADER_LEN 20 | |
898 | struct tcp_header { | |
d5ca4fce EJ |
899 | ovs_be16 tcp_src; |
900 | ovs_be16 tcp_dst; | |
7c457c33 BP |
901 | ovs_16aligned_be32 tcp_seq; |
902 | ovs_16aligned_be32 tcp_ack; | |
d5ca4fce EJ |
903 | ovs_be16 tcp_ctl; |
904 | ovs_be16 tcp_winsz; | |
905 | ovs_be16 tcp_csum; | |
906 | ovs_be16 tcp_urg; | |
064af421 BP |
907 | }; |
908 | BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header)); | |
909 | ||
fd6cd1bf BP |
910 | /* Connection states. |
911 | * | |
912 | * Names like CS_RELATED are bit values, e.g. 1 << 2. | |
913 | * Names like CS_RELATED_BIT are bit indexes, e.g. 2. */ | |
914 | #define CS_STATES \ | |
915 | CS_STATE(NEW, 0, "new") \ | |
916 | CS_STATE(ESTABLISHED, 1, "est") \ | |
917 | CS_STATE(RELATED, 2, "rel") \ | |
918 | CS_STATE(REPLY_DIR, 3, "rpl") \ | |
919 | CS_STATE(INVALID, 4, "inv") \ | |
920 | CS_STATE(TRACKED, 5, "trk") \ | |
921 | CS_STATE(SRC_NAT, 6, "snat") \ | |
922 | CS_STATE(DST_NAT, 7, "dnat") | |
aa68cf38 RB |
923 | |
924 | enum { | |
fd6cd1bf BP |
925 | #define CS_STATE(ENUM, INDEX, NAME) \ |
926 | CS_##ENUM = 1 << INDEX, \ | |
927 | CS_##ENUM##_BIT = INDEX, | |
928 | CS_STATES | |
929 | #undef CS_STATE | |
aa68cf38 | 930 | }; |
07659514 JS |
931 | |
932 | /* Undefined connection state bits. */ | |
fd6cd1bf BP |
933 | enum { |
934 | #define CS_STATE(ENUM, INDEX, NAME) +CS_##ENUM | |
935 | CS_SUPPORTED_MASK = CS_STATES | |
936 | #undef CS_STATE | |
937 | }; | |
07659514 JS |
938 | #define CS_UNSUPPORTED_MASK (~(uint32_t)CS_SUPPORTED_MASK) |
939 | ||
064af421 BP |
940 | #define ARP_HRD_ETHERNET 1 |
941 | #define ARP_PRO_IP 0x0800 | |
942 | #define ARP_OP_REQUEST 1 | |
943 | #define ARP_OP_REPLY 2 | |
7cb57d10 | 944 | #define ARP_OP_RARP 3 |
064af421 BP |
945 | |
946 | #define ARP_ETH_HEADER_LEN 28 | |
947 | struct arp_eth_header { | |
948 | /* Generic members. */ | |
d5ca4fce EJ |
949 | ovs_be16 ar_hrd; /* Hardware type. */ |
950 | ovs_be16 ar_pro; /* Protocol type. */ | |
064af421 BP |
951 | uint8_t ar_hln; /* Hardware address length. */ |
952 | uint8_t ar_pln; /* Protocol address length. */ | |
d5ca4fce | 953 | ovs_be16 ar_op; /* Opcode. */ |
064af421 BP |
954 | |
955 | /* Ethernet+IPv4 specific members. */ | |
74ff3298 JR |
956 | struct eth_addr ar_sha; /* Sender hardware address. */ |
957 | ovs_16aligned_be32 ar_spa; /* Sender protocol address. */ | |
958 | struct eth_addr ar_tha; /* Target hardware address. */ | |
959 | ovs_16aligned_be32 ar_tpa; /* Target protocol address. */ | |
7c457c33 | 960 | }; |
064af421 BP |
961 | BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header)); |
962 | ||
370e373b TLSC |
963 | #define IPV6_HEADER_LEN 40 |
964 | ||
4528f34f BP |
965 | /* Like struct in6_addr, but whereas that struct requires 32-bit alignment on |
966 | * most implementations, this one only requires 16-bit alignment. */ | |
967 | union ovs_16aligned_in6_addr { | |
968 | ovs_be16 be16[8]; | |
969 | ovs_16aligned_be32 be32[4]; | |
970 | }; | |
971 | ||
ffbe63cd | 972 | /* Like struct ip6_hdr, but whereas that struct requires 32-bit alignment, this |
4528f34f BP |
973 | * one only requires 16-bit alignment. */ |
974 | struct ovs_16aligned_ip6_hdr { | |
975 | union { | |
976 | struct ovs_16aligned_ip6_hdrctl { | |
977 | ovs_16aligned_be32 ip6_un1_flow; | |
978 | ovs_be16 ip6_un1_plen; | |
979 | uint8_t ip6_un1_nxt; | |
980 | uint8_t ip6_un1_hlim; | |
981 | } ip6_un1; | |
982 | uint8_t ip6_un2_vfc; | |
983 | } ip6_ctlun; | |
984 | union ovs_16aligned_in6_addr ip6_src; | |
985 | union ovs_16aligned_in6_addr ip6_dst; | |
986 | }; | |
987 | ||
988 | /* Like struct in6_frag, but whereas that struct requires 32-bit alignment, | |
989 | * this one only requires 16-bit alignment. */ | |
990 | struct ovs_16aligned_ip6_frag { | |
991 | uint8_t ip6f_nxt; | |
992 | uint8_t ip6f_reserved; | |
993 | ovs_be16 ip6f_offlg; | |
994 | ovs_16aligned_be32 ip6f_ident; | |
995 | }; | |
996 | ||
5abf65d0 JG |
997 | #define ICMP6_HEADER_LEN 4 |
998 | struct icmp6_header { | |
999 | uint8_t icmp6_type; | |
1000 | uint8_t icmp6_code; | |
1001 | ovs_be16 icmp6_cksum; | |
5abf65d0 JG |
1002 | }; |
1003 | BUILD_ASSERT_DECL(ICMP6_HEADER_LEN == sizeof(struct icmp6_header)); | |
1004 | ||
361a47d6 IM |
1005 | #define ICMP6_DATA_HEADER_LEN 8 |
1006 | struct icmp6_data_header { | |
edd1bef4 | 1007 | struct icmp6_header icmp6_base; |
361a47d6 IM |
1008 | union { |
1009 | ovs_16aligned_be32 be32[1]; | |
1010 | ovs_be16 be16[2]; | |
1011 | uint8_t u8[4]; | |
1012 | } icmp6_data; | |
edd1bef4 | 1013 | }; |
361a47d6 | 1014 | BUILD_ASSERT_DECL(ICMP6_DATA_HEADER_LEN == sizeof(struct icmp6_data_header)); |
edd1bef4 | 1015 | |
370e373b | 1016 | uint32_t packet_csum_pseudoheader6(const struct ovs_16aligned_ip6_hdr *); |
5be00cf9 | 1017 | ovs_be16 packet_csum_upperlayer6(const struct ovs_16aligned_ip6_hdr *, |
46445c63 | 1018 | const void *, uint8_t, uint16_t); |
370e373b | 1019 | |
e60e935b SRCSA |
1020 | /* Neighbor Discovery option field. |
1021 | * ND options are always a multiple of 8 bytes in size. */ | |
86d46f3c ZKL |
1022 | #define ND_LLA_OPT_LEN 8 |
1023 | struct ovs_nd_lla_opt { | |
1024 | uint8_t type; /* One of ND_OPT_*_LINKADDR. */ | |
1025 | uint8_t len; | |
1026 | struct eth_addr mac; | |
e60e935b | 1027 | }; |
86d46f3c | 1028 | BUILD_ASSERT_DECL(ND_LLA_OPT_LEN == sizeof(struct ovs_nd_lla_opt)); |
e60e935b | 1029 | |
b24ab67c ZKL |
1030 | /* Neighbor Discovery option: Prefix Information. */ |
1031 | #define ND_PREFIX_OPT_LEN 32 | |
1032 | struct ovs_nd_prefix_opt { | |
1033 | uint8_t type; /* ND_OPT_PREFIX_INFORMATION. */ | |
1034 | uint8_t len; /* Always 4. */ | |
1035 | uint8_t prefix_len; | |
1036 | uint8_t la_flags; /* ND_PREFIX_* flags. */ | |
1037 | ovs_16aligned_be32 valid_lifetime; | |
1038 | ovs_16aligned_be32 preferred_lifetime; | |
1039 | ovs_16aligned_be32 reserved; /* Always 0. */ | |
1040 | union ovs_16aligned_in6_addr prefix; | |
1041 | }; | |
1042 | BUILD_ASSERT_DECL(ND_PREFIX_OPT_LEN == sizeof(struct ovs_nd_prefix_opt)); | |
1043 | ||
b24ab67c ZKL |
1044 | /* Neighbor Discovery option: MTU. */ |
1045 | #define ND_MTU_OPT_LEN 8 | |
4446661a | 1046 | #define ND_MTU_DEFAULT 0 |
b24ab67c ZKL |
1047 | struct ovs_nd_mtu_opt { |
1048 | uint8_t type; /* ND_OPT_MTU */ | |
1049 | uint8_t len; /* Always 1. */ | |
1050 | ovs_be16 reserved; /* Always 0. */ | |
1051 | ovs_16aligned_be32 mtu; | |
1052 | }; | |
1053 | BUILD_ASSERT_DECL(ND_MTU_OPT_LEN == sizeof(struct ovs_nd_mtu_opt)); | |
1054 | ||
e60e935b SRCSA |
1055 | /* Like struct nd_msg (from ndisc.h), but whereas that struct requires 32-bit |
1056 | * alignment, this one only requires 16-bit alignment. */ | |
1057 | #define ND_MSG_LEN 24 | |
1058 | struct ovs_nd_msg { | |
1059 | struct icmp6_header icmph; | |
29d5e9a7 | 1060 | ovs_16aligned_be32 rso_flags; |
e60e935b | 1061 | union ovs_16aligned_in6_addr target; |
86d46f3c | 1062 | struct ovs_nd_lla_opt options[0]; |
e60e935b SRCSA |
1063 | }; |
1064 | BUILD_ASSERT_DECL(ND_MSG_LEN == sizeof(struct ovs_nd_msg)); | |
1065 | ||
b24ab67c | 1066 | /* Neighbor Discovery packet flags. */ |
fa7f915c JP |
1067 | #define ND_RSO_ROUTER 0x80000000 |
1068 | #define ND_RSO_SOLICITED 0x40000000 | |
1069 | #define ND_RSO_OVERRIDE 0x20000000 | |
1070 | ||
b24ab67c ZKL |
1071 | #define RA_MSG_LEN 16 |
1072 | struct ovs_ra_msg { | |
1073 | struct icmp6_header icmph; | |
1074 | uint8_t cur_hop_limit; | |
1075 | uint8_t mo_flags; /* ND_RA_MANAGED_ADDRESS and ND_RA_OTHER_CONFIG flags. */ | |
1076 | ovs_be16 router_lifetime; | |
1077 | ovs_be32 reachable_time; | |
1078 | ovs_be32 retrans_timer; | |
86d46f3c | 1079 | struct ovs_nd_lla_opt options[0]; |
b24ab67c ZKL |
1080 | }; |
1081 | BUILD_ASSERT_DECL(RA_MSG_LEN == sizeof(struct ovs_ra_msg)); | |
1082 | ||
1083 | #define ND_RA_MANAGED_ADDRESS 0x80 | |
1084 | #define ND_RA_OTHER_CONFIG 0x40 | |
1085 | ||
4446661a MM |
1086 | /* Defaults based on MaxRtrInterval and MinRtrInterval from RFC 4861 section |
1087 | * 6.2.1 | |
1088 | */ | |
1089 | #define ND_RA_MAX_INTERVAL_DEFAULT 600 | |
1090 | ||
1091 | static inline int | |
1092 | nd_ra_min_interval_default(int max) | |
1093 | { | |
1094 | return max >= 9 ? max / 3 : max * 3 / 4; | |
1095 | } | |
1096 | ||
06994f87 TLSC |
1097 | /* |
1098 | * Use the same struct for MLD and MLD2, naming members as the defined fields in | |
1099 | * in the corresponding version of the protocol, though they are reserved in the | |
1100 | * other one. | |
1101 | */ | |
1102 | #define MLD_HEADER_LEN 8 | |
1103 | struct mld_header { | |
1104 | uint8_t type; | |
1105 | uint8_t code; | |
1106 | ovs_be16 csum; | |
1107 | ovs_be16 mrd; | |
1108 | ovs_be16 ngrp; | |
1109 | }; | |
1110 | BUILD_ASSERT_DECL(MLD_HEADER_LEN == sizeof(struct mld_header)); | |
1111 | ||
1112 | #define MLD2_RECORD_LEN 20 | |
1113 | struct mld2_record { | |
1114 | uint8_t type; | |
1115 | uint8_t aux_len; | |
1116 | ovs_be16 nsrcs; | |
1117 | union ovs_16aligned_in6_addr maddr; | |
1118 | }; | |
1119 | BUILD_ASSERT_DECL(MLD2_RECORD_LEN == sizeof(struct mld2_record)); | |
1120 | ||
1121 | #define MLD_QUERY 130 | |
1122 | #define MLD_REPORT 131 | |
1123 | #define MLD_DONE 132 | |
1124 | #define MLD2_REPORT 143 | |
1125 | ||
fa8223b7 JP |
1126 | /* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */ |
1127 | #define IPV6_LABEL_MASK 0x000fffff | |
1128 | ||
3bffc610 BP |
1129 | /* Example: |
1130 | * | |
1131 | * char *string = "1 ::1 2"; | |
1132 | * char ipv6_s[IPV6_SCAN_LEN + 1]; | |
1133 | * struct in6_addr ipv6; | |
1134 | * | |
c2c28dfd | 1135 | * if (ovs_scan(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b) |
3bffc610 BP |
1136 | * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) { |
1137 | * ... | |
1138 | * } | |
1139 | */ | |
1140 | #define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]" | |
1141 | #define IPV6_SCAN_LEN 46 | |
1142 | ||
d31f1109 JP |
1143 | extern const struct in6_addr in6addr_exact; |
1144 | #define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \ | |
1145 | 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } } | |
1146 | ||
06994f87 TLSC |
1147 | extern const struct in6_addr in6addr_all_hosts; |
1148 | #define IN6ADDR_ALL_HOSTS_INIT { { { 0xff,0x02,0x00,0x00,0x00,0x00,0x00,0x00, \ | |
1149 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01 } } } | |
1150 | ||
b24ab67c ZKL |
1151 | extern const struct in6_addr in6addr_all_routers; |
1152 | #define IN6ADDR_ALL_ROUTERS_INIT { { { 0xff,0x02,0x00,0x00,0x00,0x00,0x00,0x00, \ | |
1153 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02 } } } | |
1154 | ||
d31f1109 JP |
1155 | static inline bool ipv6_addr_equals(const struct in6_addr *a, |
1156 | const struct in6_addr *b) | |
1157 | { | |
1158 | #ifdef IN6_ARE_ADDR_EQUAL | |
1159 | return IN6_ARE_ADDR_EQUAL(a, b); | |
1160 | #else | |
1161 | return !memcmp(a, b, sizeof(*a)); | |
1162 | #endif | |
1163 | } | |
1164 | ||
33ac3c83 | 1165 | /* Checks the IPv6 address in 'mask' for all zeroes. */ |
d31f1109 JP |
1166 | static inline bool ipv6_mask_is_any(const struct in6_addr *mask) { |
1167 | return ipv6_addr_equals(mask, &in6addr_any); | |
1168 | } | |
1169 | ||
1170 | static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) { | |
1171 | return ipv6_addr_equals(mask, &in6addr_exact); | |
1172 | } | |
1173 | ||
06994f87 TLSC |
1174 | static inline bool ipv6_is_all_hosts(const struct in6_addr *addr) { |
1175 | return ipv6_addr_equals(addr, &in6addr_all_hosts); | |
1176 | } | |
1177 | ||
8c46162b JB |
1178 | static inline bool ipv6_addr_is_set(const struct in6_addr *addr) { |
1179 | return !ipv6_addr_equals(addr, &in6addr_any); | |
1180 | } | |
1181 | ||
1182 | static inline bool ipv6_addr_is_multicast(const struct in6_addr *ip) { | |
1183 | return ip->s6_addr[0] == 0xff; | |
1184 | } | |
1185 | ||
12d0ee08 BP |
1186 | static inline struct in6_addr |
1187 | in6_addr_mapped_ipv4(ovs_be32 ip4) | |
1188 | { | |
274cd1f1 YHW |
1189 | struct in6_addr ip6; |
1190 | memset(&ip6, 0, sizeof(ip6)); | |
1191 | ip6.s6_addr[10] = 0xff, ip6.s6_addr[11] = 0xff; | |
12d0ee08 BP |
1192 | memcpy(&ip6.s6_addr[12], &ip4, 4); |
1193 | return ip6; | |
1194 | } | |
1195 | ||
754c1feb | 1196 | static inline void |
12d0ee08 | 1197 | in6_addr_set_mapped_ipv4(struct in6_addr *ip6, ovs_be32 ip4) |
754c1feb | 1198 | { |
12d0ee08 | 1199 | *ip6 = in6_addr_mapped_ipv4(ip4); |
754c1feb TLSC |
1200 | } |
1201 | ||
1202 | static inline ovs_be32 | |
1203 | in6_addr_get_mapped_ipv4(const struct in6_addr *addr) | |
1204 | { | |
8bfc3c10 SS |
1205 | union ovs_16aligned_in6_addr *taddr = |
1206 | (union ovs_16aligned_in6_addr *) addr; | |
754c1feb TLSC |
1207 | if (IN6_IS_ADDR_V4MAPPED(addr)) { |
1208 | return get_16aligned_be32(&taddr->be32[3]); | |
1209 | } else { | |
1210 | return INADDR_ANY; | |
1211 | } | |
1212 | } | |
1213 | ||
c2b878e0 TLSC |
1214 | static inline void |
1215 | in6_addr_solicited_node(struct in6_addr *addr, const struct in6_addr *ip6) | |
1216 | { | |
8bfc3c10 SS |
1217 | union ovs_16aligned_in6_addr *taddr = |
1218 | (union ovs_16aligned_in6_addr *) addr; | |
c2b878e0 TLSC |
1219 | memset(taddr->be16, 0, sizeof(taddr->be16)); |
1220 | taddr->be16[0] = htons(0xff02); | |
1221 | taddr->be16[5] = htons(0x1); | |
1222 | taddr->be16[6] = htons(0xff00); | |
1223 | memcpy(&addr->s6_addr[13], &ip6->s6_addr[13], 3); | |
1224 | } | |
1225 | ||
7cc0741e NS |
1226 | /* |
1227 | * Generates ipv6 EUI64 address from the given eth addr | |
1228 | * and prefix and stores it in 'lla' | |
1229 | */ | |
1230 | static inline void | |
1231 | in6_generate_eui64(struct eth_addr ea, struct in6_addr *prefix, | |
1232 | struct in6_addr *lla) | |
1233 | { | |
8bfc3c10 SS |
1234 | union ovs_16aligned_in6_addr *taddr = |
1235 | (union ovs_16aligned_in6_addr *) lla; | |
1236 | union ovs_16aligned_in6_addr *prefix_taddr = | |
1237 | (union ovs_16aligned_in6_addr *) prefix; | |
7cc0741e NS |
1238 | taddr->be16[0] = prefix_taddr->be16[0]; |
1239 | taddr->be16[1] = prefix_taddr->be16[1]; | |
1240 | taddr->be16[2] = prefix_taddr->be16[2]; | |
1241 | taddr->be16[3] = prefix_taddr->be16[3]; | |
1242 | taddr->be16[4] = htons(((ea.ea[0] ^ 0x02) << 8) | ea.ea[1]); | |
1243 | taddr->be16[5] = htons(ea.ea[2] << 8 | 0x00ff); | |
1244 | taddr->be16[6] = htons(0xfe << 8 | ea.ea[3]); | |
1245 | taddr->be16[7] = ea.be16[2]; | |
1246 | } | |
1247 | ||
685f4dfe NS |
1248 | /* |
1249 | * Generates ipv6 link local address from the given eth addr | |
1250 | * with prefix 'fe80::/64' and stores it in 'lla' | |
1251 | */ | |
1252 | static inline void | |
1253 | in6_generate_lla(struct eth_addr ea, struct in6_addr *lla) | |
1254 | { | |
8bfc3c10 SS |
1255 | union ovs_16aligned_in6_addr *taddr = |
1256 | (union ovs_16aligned_in6_addr *) lla; | |
685f4dfe NS |
1257 | memset(taddr->be16, 0, sizeof(taddr->be16)); |
1258 | taddr->be16[0] = htons(0xfe80); | |
1259 | taddr->be16[4] = htons(((ea.ea[0] ^ 0x02) << 8) | ea.ea[1]); | |
1260 | taddr->be16[5] = htons(ea.ea[2] << 8 | 0x00ff); | |
1261 | taddr->be16[6] = htons(0xfe << 8 | ea.ea[3]); | |
1262 | taddr->be16[7] = ea.be16[2]; | |
1263 | } | |
1264 | ||
6d1a4f16 JP |
1265 | /* Returns true if 'addr' is a link local address. Otherwise, false. */ |
1266 | static inline bool | |
1267 | in6_is_lla(struct in6_addr *addr) | |
1268 | { | |
1269 | #ifdef s6_addr32 | |
1270 | return addr->s6_addr32[0] == htonl(0xfe800000) && !(addr->s6_addr32[1]); | |
1271 | #else | |
bf32e3e2 JP |
1272 | return addr->s6_addr[0] == 0xfe && addr->s6_addr[1] == 0x80 && |
1273 | !(addr->s6_addr[2] | addr->s6_addr[3] | addr->s6_addr[4] | | |
1274 | addr->s6_addr[5] | addr->s6_addr[6] | addr->s6_addr[7]); | |
6d1a4f16 JP |
1275 | #endif |
1276 | } | |
1277 | ||
c2b878e0 TLSC |
1278 | static inline void |
1279 | ipv6_multicast_to_ethernet(struct eth_addr *eth, const struct in6_addr *ip6) | |
1280 | { | |
1281 | eth->ea[0] = 0x33; | |
1282 | eth->ea[1] = 0x33; | |
1283 | eth->ea[2] = ip6->s6_addr[12]; | |
1284 | eth->ea[3] = ip6->s6_addr[13]; | |
1285 | eth->ea[4] = ip6->s6_addr[14]; | |
1286 | eth->ea[5] = ip6->s6_addr[15]; | |
1287 | } | |
1288 | ||
e8c16d83 SH |
1289 | static inline bool dl_type_is_ip_any(ovs_be16 dl_type) |
1290 | { | |
1291 | return dl_type == htons(ETH_TYPE_IP) | |
1292 | || dl_type == htons(ETH_TYPE_IPV6); | |
1293 | } | |
1294 | ||
a36de779 | 1295 | /* Tunnel header */ |
e5a1caee | 1296 | |
a36de779 PS |
1297 | /* GRE protocol header */ |
1298 | struct gre_base_hdr { | |
1299 | ovs_be16 flags; | |
1300 | ovs_be16 protocol; | |
1301 | }; | |
1302 | ||
1303 | #define GRE_CSUM 0x8000 | |
1304 | #define GRE_ROUTING 0x4000 | |
1305 | #define GRE_KEY 0x2000 | |
1306 | #define GRE_SEQ 0x1000 | |
1307 | #define GRE_STRICT 0x0800 | |
1308 | #define GRE_REC 0x0700 | |
1309 | #define GRE_FLAGS 0x00F8 | |
1310 | #define GRE_VERSION 0x0007 | |
1311 | ||
7dc18ae9 WT |
1312 | /* |
1313 | * ERSPAN protocol header and metadata | |
1314 | * | |
1315 | * Version 1 (Type II) header (8 octets [42:49]) | |
1316 | * 0 1 2 3 | |
1317 | * 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 | |
1318 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1319 | * | Ver | VLAN | COS | En|T| Session ID | | |
1320 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1321 | * | Reserved | Index | | |
1322 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1323 | * | |
1324 | * | |
1325 | * ERSPAN Version 2 (Type III) header (12 octets [42:49]) | |
1326 | * 0 1 2 3 | |
1327 | * 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 | |
1328 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1329 | * | Ver | VLAN | COS |BSO|T| Session ID | | |
1330 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1331 | * | Timestamp | | |
1332 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1333 | * | SGT |P| FT | Hw ID |D|Gra|O| | |
1334 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1335 | * | |
1336 | */ | |
1337 | ||
1338 | /* ERSPAN has fixed 8-byte GRE header */ | |
1339 | #define ERSPAN_GREHDR_LEN 8 | |
1340 | #define ERSPAN_HDR(gre_base_hdr) \ | |
1341 | ((struct erspan_base_hdr *)((char *)gre_base_hdr + ERSPAN_GREHDR_LEN)) | |
1342 | ||
1343 | #define ERSPAN_V1_MDSIZE 4 | |
1344 | #define ERSPAN_V2_MDSIZE 8 | |
1345 | ||
1346 | #define ERSPAN_SID_MASK 0x03ff /* 10-bit Session ID. */ | |
1347 | #define ERSPAN_IDX_MASK 0xfffff /* v1 Index */ | |
1348 | #define ERSPAN_HWID_MASK 0x03f0 | |
1349 | #define ERSPAN_DIR_MASK 0x0008 | |
1350 | ||
1351 | struct erspan_base_hdr { | |
506ac275 WT |
1352 | #ifdef WORDS_BIGENDIAN |
1353 | uint8_t ver:4, | |
1354 | vlan_upper:4; | |
1355 | uint8_t vlan:8; | |
1356 | uint8_t cos:3, | |
1357 | en:2, | |
1358 | t:1, | |
1359 | session_id_upper:2; | |
1360 | uint8_t session_id:8; | |
1361 | #else | |
7dc18ae9 WT |
1362 | uint8_t vlan_upper:4, |
1363 | ver:4; | |
1364 | uint8_t vlan:8; | |
1365 | uint8_t session_id_upper:2, | |
1366 | t:1, | |
1367 | en:2, | |
1368 | cos:3; | |
1369 | uint8_t session_id:8; | |
506ac275 | 1370 | #endif |
7dc18ae9 WT |
1371 | }; |
1372 | ||
1373 | struct erspan_md2 { | |
1374 | ovs_16aligned_be32 timestamp; | |
1375 | ovs_be16 sgt; | |
506ac275 WT |
1376 | #ifdef WORDS_BIGENDIAN |
1377 | uint8_t p:1, | |
1378 | ft:5, | |
1379 | hwid_upper:2; | |
1380 | uint8_t hwid:4, | |
1381 | dir:1, | |
1382 | gra:2, | |
1383 | o:1; | |
1384 | #else | |
7dc18ae9 WT |
1385 | uint8_t hwid_upper:2, |
1386 | ft:5, | |
1387 | p:1; | |
1388 | uint8_t o:1, | |
1389 | gra:2, | |
1390 | dir:1, | |
1391 | hwid:4; | |
506ac275 | 1392 | #endif |
7dc18ae9 WT |
1393 | }; |
1394 | ||
1395 | struct erspan_metadata { | |
1396 | int version; | |
1397 | union { | |
1398 | ovs_be32 index; /* Version 1 (type II)*/ | |
1399 | struct erspan_md2 md2; /* Version 2 (type III) */ | |
1400 | } u; | |
1401 | }; | |
1402 | ||
1403 | static inline uint16_t get_sid(const struct erspan_base_hdr *ershdr) | |
1404 | { | |
1405 | return (ershdr->session_id_upper << 8) + ershdr->session_id; | |
1406 | } | |
1407 | ||
1408 | static inline void set_sid(struct erspan_base_hdr *ershdr, uint16_t id) | |
1409 | { | |
1410 | ershdr->session_id = id & 0xff; | |
1411 | ershdr->session_id_upper = (id >> 8) &0x3; | |
1412 | } | |
1413 | ||
1414 | static inline uint8_t get_hwid(const struct erspan_md2 *md2) | |
1415 | { | |
1416 | return (md2->hwid_upper << 4) + md2->hwid; | |
1417 | } | |
1418 | ||
1419 | static inline void set_hwid(struct erspan_md2 *md2, uint8_t hwid) | |
1420 | { | |
1421 | md2->hwid = hwid & 0xf; | |
1422 | md2->hwid_upper = (hwid >> 4) & 0x3; | |
1423 | } | |
1424 | ||
1425 | /* ERSPAN timestamp granularity | |
1426 | * 00b --> granularity = 100 microseconds | |
1427 | * 01b --> granularity = 100 nanoseconds | |
1428 | * 10b --> granularity = IEEE 1588 | |
1429 | * Here we only support 100 microseconds. | |
1430 | */ | |
1431 | enum erspan_ts_gra { | |
1432 | ERSPAN_100US, | |
1433 | ERSPAN_100NS, | |
1434 | ERSPAN_IEEE1588, | |
1435 | }; | |
1436 | ||
1437 | static inline ovs_be32 get_erspan_ts(enum erspan_ts_gra gra) | |
1438 | { | |
1439 | ovs_be32 ts = 0; | |
1440 | ||
1441 | switch (gra) { | |
1442 | case ERSPAN_100US: | |
1443 | ts = htonl((uint32_t)(time_wall_usec() / 100)); | |
1444 | break; | |
1445 | case ERSPAN_100NS: | |
1446 | /* fall back */ | |
1447 | case ERSPAN_IEEE1588: | |
1448 | /* fall back */ | |
1449 | default: | |
1450 | OVS_NOT_REACHED(); | |
1451 | break; | |
1452 | } | |
1453 | return ts; | |
1454 | } | |
1455 | ||
3c6d05a0 WT |
1456 | /* |
1457 | * GTP-U protocol header and metadata | |
1458 | * See: | |
1459 | * User Plane Protocol and Architectural Analysis on 3GPP 5G System | |
1460 | * draft-hmm-dmm-5g-uplane-analysis-00 | |
1461 | * | |
1462 | * 0 1 2 3 | |
1463 | * 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 | |
1464 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1465 | * | Ver |P|R|E|S|N| Message Type| Length | | |
1466 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1467 | * | Tunnel Endpoint Identifier | | |
1468 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1469 | * | Sequence Number | N-PDU Number | Next-Ext-Hdr | | |
1470 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1471 | * | |
1472 | * GTP-U Flags: | |
1473 | * P: Protocol Type (Set to '1') | |
1474 | * R: Reserved Bit (Set to '0') | |
1475 | * E: Extension Header Flag (Set to '1' if extension header exists) | |
1476 | * S: Sequence Number Flag (Set to '1' if sequence number exists) | |
1477 | * N: N-PDU Number Flag (Set to '1' if N-PDU number exists) | |
1478 | * | |
1479 | * GTP-U Message Type: | |
1480 | * Indicates the type of GTP-U message. | |
1481 | * | |
1482 | * GTP-U Length: | |
1483 | * Indicates the length in octets of the payload. | |
1484 | * | |
1485 | * User payload is transmitted in G-PDU packets. | |
1486 | */ | |
1487 | ||
1488 | #define GTPU_VER_MASK 0xe0 | |
1489 | #define GTPU_P_MASK 0x10 | |
1490 | #define GTPU_E_MASK 0x04 | |
1491 | #define GTPU_S_MASK 0x02 | |
1492 | ||
1493 | /* GTP-U UDP port. */ | |
1494 | #define GTPU_DST_PORT 2152 | |
1495 | ||
1496 | /* Default GTP-U flags: Ver = 1 and P = 1. */ | |
1497 | #define GTPU_FLAGS_DEFAULT 0x30 | |
1498 | ||
1499 | /* GTP-U message type for normal user plane PDU. */ | |
1500 | #define GTPU_MSGTYPE_REQ 1 /* Echo Request. */ | |
1501 | #define GTPU_MSGTYPE_REPL 2 /* Echo Reply. */ | |
1502 | #define GTPU_MSGTYPE_GPDU 255 /* User Payload. */ | |
1503 | ||
1504 | struct gtpu_metadata { | |
1505 | uint8_t flags; | |
1506 | uint8_t msgtype; | |
1507 | }; | |
1508 | BUILD_ASSERT_DECL(sizeof(struct gtpu_metadata) == 2); | |
1509 | ||
1510 | struct gtpuhdr { | |
1511 | struct gtpu_metadata md; | |
1512 | ovs_be16 len; | |
1513 | ovs_16aligned_be32 teid; | |
1514 | }; | |
1515 | BUILD_ASSERT_DECL(sizeof(struct gtpuhdr) == 8); | |
1516 | ||
1517 | struct gtpuhdr_opt { | |
1518 | ovs_be16 seqno; | |
1519 | uint8_t pdu_number; | |
1520 | uint8_t next_ext_type; | |
1521 | }; | |
1522 | BUILD_ASSERT_DECL(sizeof(struct gtpuhdr_opt) == 4); | |
1523 | ||
a36de779 PS |
1524 | /* VXLAN protocol header */ |
1525 | struct vxlanhdr { | |
439f39cb GS |
1526 | union { |
1527 | ovs_16aligned_be32 vx_flags; /* VXLAN flags. */ | |
1528 | struct { | |
1529 | uint8_t flags; /* VXLAN GPE flags. */ | |
1530 | uint8_t reserved[2]; /* 16 bits reserved. */ | |
1531 | uint8_t next_protocol; /* Next Protocol field for VXLAN GPE. */ | |
1532 | } vx_gpe; | |
1533 | }; | |
a36de779 PS |
1534 | ovs_16aligned_be32 vx_vni; |
1535 | }; | |
439f39cb | 1536 | BUILD_ASSERT_DECL(sizeof(struct vxlanhdr) == 8); |
a36de779 PS |
1537 | |
1538 | #define VXLAN_FLAGS 0x08000000 /* struct vxlanhdr.vx_flags required value. */ | |
1539 | ||
439f39cb GS |
1540 | /* |
1541 | * VXLAN Generic Protocol Extension (VXLAN_F_GPE): | |
1542 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1543 | * |R|R|Ver|I|P|R|O| Reserved |Next Protocol | | |
1544 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1545 | * | VXLAN Network Identifier (VNI) | Reserved | | |
1546 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1547 | * | |
1548 | * Ver = Version. Indicates VXLAN GPE protocol version. | |
1549 | * | |
1550 | * P = Next Protocol Bit. The P bit is set to indicate that the | |
1551 | * Next Protocol field is present. | |
1552 | * | |
1553 | * O = OAM Flag Bit. The O bit is set to indicate that the packet | |
1554 | * is an OAM packet. | |
1555 | * | |
1556 | * Next Protocol = This 8 bit field indicates the protocol header | |
1557 | * immediately following the VXLAN GPE header. | |
1558 | * | |
1559 | * https://tools.ietf.org/html/draft-ietf-nvo3-vxlan-gpe-01 | |
1560 | */ | |
1561 | ||
1562 | /* Fields in struct vxlanhdr.vx_gpe.flags */ | |
1563 | #define VXLAN_GPE_FLAGS_VER 0x30 /* Version. */ | |
1564 | #define VLXAN_GPE_FLAGS_P 0x04 /* Next Protocol Bit. */ | |
1565 | #define VXLAN_GPE_FLAGS_O 0x01 /* OAM Bit. */ | |
1566 | ||
1567 | /* VXLAN-GPE header flags. */ | |
1568 | #define VXLAN_HF_VER ((1U <<29) | (1U <<28)) | |
1569 | #define VXLAN_HF_NP (1U <<26) | |
1570 | #define VXLAN_HF_OAM (1U <<24) | |
1571 | ||
1572 | #define VXLAN_GPE_USED_BITS (VXLAN_HF_VER | VXLAN_HF_NP | VXLAN_HF_OAM | \ | |
1573 | 0xff) | |
1574 | ||
1575 | /* VXLAN-GPE header Next Protocol. */ | |
1576 | #define VXLAN_GPE_NP_IPV4 0x01 | |
1577 | #define VXLAN_GPE_NP_IPV6 0x02 | |
1578 | #define VXLAN_GPE_NP_ETHERNET 0x03 | |
1579 | #define VXLAN_GPE_NP_NSH 0x04 | |
1580 | ||
1581 | #define VXLAN_F_GPE 0x4000 | |
1582 | #define VXLAN_HF_GPE 0x04000000 | |
1583 | ||
2482b0b0 JS |
1584 | /* Input values for PACKET_TYPE macros have to be in host byte order. |
1585 | * The _BE postfix indicates result is in network byte order. Otherwise result | |
1586 | * is in host byte order. */ | |
1587 | #define PACKET_TYPE(NS, NS_TYPE) ((uint32_t) ((NS) << 16 | (NS_TYPE))) | |
1588 | #define PACKET_TYPE_BE(NS, NS_TYPE) (htonl((NS) << 16 | (NS_TYPE))) | |
1589 | ||
1590 | /* Returns the host byte ordered namespace of 'packet type'. */ | |
1591 | static inline uint16_t | |
1592 | pt_ns(ovs_be32 packet_type) | |
1593 | { | |
1594 | return ntohl(packet_type) >> 16; | |
1595 | } | |
1596 | ||
1597 | /* Returns the network byte ordered namespace type of 'packet type'. */ | |
1598 | static inline ovs_be16 | |
1599 | pt_ns_type_be(ovs_be32 packet_type) | |
1600 | { | |
1601 | return be32_to_be16(packet_type); | |
1602 | } | |
1603 | ||
1604 | /* Returns the host byte ordered namespace type of 'packet type'. */ | |
1605 | static inline uint16_t | |
1606 | pt_ns_type(ovs_be32 packet_type) | |
1607 | { | |
1608 | return ntohs(pt_ns_type_be(packet_type)); | |
1609 | } | |
1610 | ||
1611 | /* Well-known packet_type field values. */ | |
1612 | enum packet_type { | |
f839892a JS |
1613 | PT_ETH = PACKET_TYPE(OFPHTN_ONF, 0x0000), /* Default PT: Ethernet */ |
1614 | PT_USE_NEXT_PROTO = PACKET_TYPE(OFPHTN_ONF, 0xfffe), /* Pseudo PT for decap. */ | |
2482b0b0 JS |
1615 | PT_IPV4 = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_IP), |
1616 | PT_IPV6 = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_IPV6), | |
1617 | PT_MPLS = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_MPLS), | |
1618 | PT_MPLS_MC = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_MPLS_MCAST), | |
3d2fbd70 | 1619 | PT_NSH = PACKET_TYPE(OFPHTN_ETHERTYPE, ETH_TYPE_NSH), |
2482b0b0 JS |
1620 | PT_UNKNOWN = PACKET_TYPE(0xffff, 0xffff), /* Unknown packet type. */ |
1621 | }; | |
1622 | ||
1623 | ||
ac6d120f | 1624 | void ipv6_format_addr(const struct in6_addr *addr, struct ds *); |
9ac0aada JR |
1625 | void ipv6_format_addr_bracket(const struct in6_addr *addr, struct ds *, |
1626 | bool bracket); | |
ac6d120f JP |
1627 | void ipv6_format_mapped(const struct in6_addr *addr, struct ds *); |
1628 | void ipv6_format_masked(const struct in6_addr *addr, | |
1629 | const struct in6_addr *mask, struct ds *); | |
bed610e8 | 1630 | const char * ipv6_string_mapped(char *addr_str, const struct in6_addr *addr); |
d31f1109 JP |
1631 | struct in6_addr ipv6_addr_bitand(const struct in6_addr *src, |
1632 | const struct in6_addr *mask); | |
b0ad27f3 JP |
1633 | struct in6_addr ipv6_addr_bitxor(const struct in6_addr *a, |
1634 | const struct in6_addr *b); | |
1635 | bool ipv6_is_zero(const struct in6_addr *a); | |
d31f1109 JP |
1636 | struct in6_addr ipv6_create_mask(int mask); |
1637 | int ipv6_count_cidr_bits(const struct in6_addr *netmask); | |
1638 | bool ipv6_is_cidr(const struct in6_addr *netmask); | |
2b02db1b BP |
1639 | |
1640 | bool ipv6_parse(const char *s, struct in6_addr *ip); | |
fac5bd3c JP |
1641 | char *ipv6_parse_masked(const char *s, struct in6_addr *ipv6, |
1642 | struct in6_addr *mask); | |
2b02db1b BP |
1643 | char *ipv6_parse_cidr(const char *s, struct in6_addr *ip, unsigned int *plen) |
1644 | OVS_WARN_UNUSED_RESULT; | |
7dc88496 NS |
1645 | char *ipv6_parse_masked_len(const char *s, int *n, struct in6_addr *ipv6, |
1646 | struct in6_addr *mask); | |
1647 | char *ipv6_parse_cidr_len(const char *s, int *n, struct in6_addr *ip, | |
1648 | unsigned int *plen) | |
1649 | OVS_WARN_UNUSED_RESULT; | |
d31f1109 | 1650 | |
74ff3298 JR |
1651 | void *eth_compose(struct dp_packet *, const struct eth_addr eth_dst, |
1652 | const struct eth_addr eth_src, uint16_t eth_type, | |
5de1bb5c | 1653 | size_t size); |
74ff3298 JR |
1654 | void *snap_compose(struct dp_packet *, const struct eth_addr eth_dst, |
1655 | const struct eth_addr eth_src, | |
5de1bb5c | 1656 | unsigned int oui, uint16_t snap_type, size_t size); |
cf62fa4c | 1657 | void packet_set_ipv4(struct dp_packet *, ovs_be32 src, ovs_be32 dst, uint8_t tos, |
c97664b3 | 1658 | uint8_t ttl); |
fc052306 ZB |
1659 | void packet_set_ipv4_addr(struct dp_packet *packet, ovs_16aligned_be32 *addr, |
1660 | ovs_be32 new_addr); | |
932c96b7 JR |
1661 | void packet_set_ipv6(struct dp_packet *, const struct in6_addr *src, |
1662 | const struct in6_addr *dst, uint8_t tc, | |
038341d1 | 1663 | ovs_be32 fl, uint8_t hlmit); |
0e29d884 DB |
1664 | void packet_set_ipv6_addr(struct dp_packet *packet, uint8_t proto, |
1665 | ovs_16aligned_be32 addr[4], | |
1666 | const struct in6_addr *new_addr, | |
1667 | bool recalculate_csum); | |
cf62fa4c PS |
1668 | void packet_set_tcp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst); |
1669 | void packet_set_udp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst); | |
1670 | void packet_set_sctp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst); | |
b8786b18 | 1671 | void packet_set_icmp(struct dp_packet *, uint8_t type, uint8_t code); |
932c96b7 | 1672 | void packet_set_nd(struct dp_packet *, const struct in6_addr *target, |
74ff3298 | 1673 | const struct eth_addr sll, const struct eth_addr tll); |
9b2b8497 VDA |
1674 | void packet_set_nd_ext(struct dp_packet *packet, |
1675 | const ovs_16aligned_be32 rso_flags, | |
1676 | const uint8_t opt_type); | |
1db44453 DC |
1677 | void packet_set_igmp3_query(struct dp_packet *, uint8_t max_resp, |
1678 | ovs_be32 group, bool srs, uint8_t qrv, | |
1679 | uint8_t qqic); | |
a66733a8 | 1680 | void packet_format_tcp_flags(struct ds *, uint16_t); |
61bf6666 | 1681 | const char *packet_tcp_flag_to_string(uint32_t flag); |
cec89046 LB |
1682 | void *compose_ipv6(struct dp_packet *packet, uint8_t proto, |
1683 | const struct in6_addr *src, const struct in6_addr *dst, | |
1684 | uint8_t key_tc, ovs_be32 key_fl, uint8_t key_hl, int size); | |
6335d074 | 1685 | void compose_arp__(struct dp_packet *); |
eb0b295e | 1686 | void compose_arp(struct dp_packet *, uint16_t arp_op, |
74ff3298 JR |
1687 | const struct eth_addr arp_sha, |
1688 | const struct eth_addr arp_tha, bool broadcast, | |
eb0b295e | 1689 | ovs_be32 arp_spa, ovs_be32 arp_tpa); |
16187903 JP |
1690 | void compose_nd_ns(struct dp_packet *, const struct eth_addr eth_src, |
1691 | const struct in6_addr *ipv6_src, | |
1692 | const struct in6_addr *ipv6_dst); | |
1693 | void compose_nd_na(struct dp_packet *, const struct eth_addr eth_src, | |
1694 | const struct eth_addr eth_dst, | |
1695 | const struct in6_addr *ipv6_src, | |
1696 | const struct in6_addr *ipv6_dst, | |
1697 | ovs_be32 rso_flags); | |
b24ab67c ZKL |
1698 | void compose_nd_ra(struct dp_packet *, |
1699 | const struct eth_addr eth_src, | |
1700 | const struct eth_addr eth_dst, | |
1701 | const struct in6_addr *ipv6_src, | |
1702 | const struct in6_addr *ipv6_dst, | |
1703 | uint8_t cur_hop_limit, uint8_t mo_flags, | |
1704 | ovs_be16 router_lt, ovs_be32 reachable_time, | |
4446661a | 1705 | ovs_be32 retrans_timer, uint32_t mtu); |
b24ab67c ZKL |
1706 | void packet_put_ra_prefix_opt(struct dp_packet *, |
1707 | uint8_t plen, uint8_t la_flags, | |
1708 | ovs_be32 valid_lifetime, | |
1709 | ovs_be32 preferred_lifetime, | |
1710 | const ovs_be128 router_prefix); | |
0292a0c9 | 1711 | uint32_t packet_csum_pseudoheader(const struct ip_header *); |
1bc3f0ed | 1712 | void IP_ECN_set_ce(struct dp_packet *pkt, bool is_ipv6); |
12113c39 | 1713 | |
ea991ad2 NS |
1714 | #define DNS_HEADER_LEN 12 |
1715 | struct dns_header { | |
1716 | ovs_be16 id; | |
1717 | uint8_t lo_flag; /* QR (1), OPCODE (4), AA (1), TC (1) and RD (1) */ | |
1718 | uint8_t hi_flag; /* RA (1), Z (3) and RCODE (4) */ | |
1719 | ovs_be16 qdcount; /* Num of entries in the question section. */ | |
1720 | ovs_be16 ancount; /* Num of resource records in the answer section. */ | |
1721 | ||
1722 | /* Num of name server records in the authority record section. */ | |
1723 | ovs_be16 nscount; | |
1724 | ||
1725 | /* Num of resource records in the additional records section. */ | |
1726 | ovs_be16 arcount; | |
1727 | }; | |
1728 | ||
1729 | BUILD_ASSERT_DECL(DNS_HEADER_LEN == sizeof(struct dns_header)); | |
1730 | ||
1731 | #define DNS_QUERY_TYPE_A 0x01 | |
1732 | #define DNS_QUERY_TYPE_AAAA 0x1c | |
1733 | #define DNS_QUERY_TYPE_ANY 0xff | |
1734 | ||
1735 | #define DNS_CLASS_IN 0x01 | |
1736 | #define DNS_DEFAULT_RR_TTL 3600 | |
1737 | ||
064af421 | 1738 | #endif /* packets.h */ |