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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" |
07659514 | 28 | #include "odp-netlink.h" |
064af421 | 29 | #include "random.h" |
7e36ac42 | 30 | #include "hash.h" |
9558d2a5 | 31 | #include "tun-metadata.h" |
754c1feb | 32 | #include "unaligned.h" |
064af421 BP |
33 | #include "util.h" |
34 | ||
cf62fa4c | 35 | struct dp_packet; |
d31f1109 | 36 | struct ds; |
b9e8b45a | 37 | |
59781952 JR |
38 | /* Purely internal to OVS userspace. These flags should never be exposed to |
39 | * the outside world and so aren't included in the flags mask. */ | |
40 | ||
41 | /* Tunnel information is in userspace datapath format. */ | |
42 | #define FLOW_TNL_F_UDPIF (1 << 4) | |
43 | ||
ffe4c74f JB |
44 | static inline bool ipv6_addr_is_set(const struct in6_addr *addr); |
45 | ||
46 | static inline bool | |
47 | flow_tnl_dst_is_set(const struct flow_tnl *tnl) | |
48 | { | |
49 | return tnl->ip_dst || ipv6_addr_is_set(&tnl->ipv6_dst); | |
50 | } | |
51 | ||
52 | struct in6_addr flow_tnl_dst(const struct flow_tnl *tnl); | |
53 | struct in6_addr flow_tnl_src(const struct flow_tnl *tnl); | |
54 | ||
59781952 JR |
55 | /* Returns an offset to 'src' covering all the meaningful fields in 'src'. */ |
56 | static inline size_t | |
57 | flow_tnl_size(const struct flow_tnl *src) | |
58 | { | |
ffe4c74f JB |
59 | if (!flow_tnl_dst_is_set(src)) { |
60 | /* Covers ip_dst and ipv6_dst only. */ | |
59781952 JR |
61 | return offsetof(struct flow_tnl, ip_src); |
62 | } | |
63 | if (src->flags & FLOW_TNL_F_UDPIF) { | |
64 | /* Datapath format, cover all options we have. */ | |
65 | return offsetof(struct flow_tnl, metadata.opts) | |
66 | + src->metadata.present.len; | |
67 | } | |
68 | if (!src->metadata.present.map) { | |
69 | /* No TLVs, opts is irrelevant. */ | |
70 | return offsetof(struct flow_tnl, metadata.opts); | |
71 | } | |
72 | /* Have decoded TLVs, opts is relevant. */ | |
73 | return sizeof *src; | |
74 | } | |
75 | ||
76 | /* Copy flow_tnl, but avoid copying unused portions of tun_metadata. Unused | |
77 | * data in 'dst' is NOT cleared, so this must not be used in cases where the | |
78 | * uninitialized portion may be hashed over. */ | |
79 | static inline void | |
80 | flow_tnl_copy__(struct flow_tnl *dst, const struct flow_tnl *src) | |
81 | { | |
82 | memcpy(dst, src, flow_tnl_size(src)); | |
83 | } | |
84 | ||
85 | static inline bool | |
86 | flow_tnl_equal(const struct flow_tnl *a, const struct flow_tnl *b) | |
87 | { | |
88 | size_t a_size = flow_tnl_size(a); | |
89 | ||
90 | return a_size == flow_tnl_size(b) && !memcmp(a, b, a_size); | |
91 | } | |
92 | ||
758c456d JR |
93 | /* Datapath packet metadata */ |
94 | struct pkt_metadata { | |
572f732a AZ |
95 | uint32_t recirc_id; /* Recirculation id carried with the |
96 | recirculating packets. 0 for packets | |
97 | received from the wire. */ | |
98 | uint32_t dp_hash; /* hash value computed by the recirculation | |
99 | action. */ | |
758c456d JR |
100 | uint32_t skb_priority; /* Packet priority for QoS. */ |
101 | uint32_t pkt_mark; /* Packet mark. */ | |
2a28ccc8 | 102 | uint8_t ct_state; /* Connection state. */ |
daf4d3c1 | 103 | bool ct_orig_tuple_ipv6; |
07659514 | 104 | uint16_t ct_zone; /* Connection zone. */ |
8e53fe8c | 105 | uint32_t ct_mark; /* Connection mark. */ |
9daf2348 | 106 | ovs_u128 ct_label; /* Connection label. */ |
daf4d3c1 JR |
107 | union { /* Populated only for non-zero 'ct_state'. */ |
108 | struct ovs_key_ct_tuple_ipv4 ipv4; | |
109 | struct ovs_key_ct_tuple_ipv6 ipv6; /* Used only if */ | |
110 | } ct_orig_tuple; /* 'ct_orig_tuple_ipv6' is set */ | |
b5e7e61a | 111 | union flow_in_port in_port; /* Input port. */ |
59781952 JR |
112 | struct flow_tnl tunnel; /* Encapsulating tunnel parameters. Note that |
113 | * if 'ip_dst' == 0, the rest of the fields may | |
114 | * be uninitialized. */ | |
758c456d JR |
115 | }; |
116 | ||
6b241d64 PS |
117 | static inline void |
118 | pkt_metadata_init_tnl(struct pkt_metadata *md) | |
119 | { | |
120 | /* Zero up through the tunnel metadata options. The length and table | |
121 | * are before this and as long as they are empty, the options won't | |
122 | * be looked at. */ | |
123 | memset(md, 0, offsetof(struct pkt_metadata, tunnel.metadata.opts)); | |
124 | } | |
125 | ||
35303d71 JG |
126 | static inline void |
127 | pkt_metadata_init(struct pkt_metadata *md, odp_port_t port) | |
128 | { | |
129 | /* It can be expensive to zero out all of the tunnel metadata. However, | |
130 | * we can just zero out ip_dst and the rest of the data will never be | |
131 | * looked at. */ | |
07659514 | 132 | memset(md, 0, offsetof(struct pkt_metadata, in_port)); |
35303d71 | 133 | md->tunnel.ip_dst = 0; |
ffe4c74f | 134 | md->tunnel.ipv6_dst = in6addr_any; |
35303d71 JG |
135 | |
136 | md->in_port.odp_port = port; | |
137 | } | |
b5e7e61a | 138 | |
a90ed026 DDP |
139 | /* This function prefetches the cachelines touched by pkt_metadata_init() |
140 | * For performance reasons the two functions should be kept in sync. */ | |
141 | static inline void | |
142 | pkt_metadata_prefetch_init(struct pkt_metadata *md) | |
143 | { | |
144 | ovs_prefetch_range(md, offsetof(struct pkt_metadata, tunnel.ip_src)); | |
145 | } | |
146 | ||
76343538 BP |
147 | bool dpid_from_string(const char *s, uint64_t *dpidp); |
148 | ||
064af421 BP |
149 | #define ETH_ADDR_LEN 6 |
150 | ||
74ff3298 JR |
151 | static const struct eth_addr eth_addr_broadcast OVS_UNUSED |
152 | = { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } } }; | |
064af421 | 153 | |
74ff3298 JR |
154 | static const struct eth_addr eth_addr_exact OVS_UNUSED |
155 | = { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } } }; | |
eb0b295e | 156 | |
74ff3298 JR |
157 | static const struct eth_addr eth_addr_zero OVS_UNUSED |
158 | = { { { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }; | |
b2342f7a BP |
159 | static const struct eth_addr64 eth_addr64_zero OVS_UNUSED |
160 | = { { { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }; | |
ba186119 | 161 | |
74ff3298 JR |
162 | static const struct eth_addr eth_addr_stp OVS_UNUSED |
163 | = { { { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00 } } }; | |
c25c91fd | 164 | |
74ff3298 JR |
165 | static const struct eth_addr eth_addr_lacp OVS_UNUSED |
166 | = { { { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 } } }; | |
de8d2ef9 | 167 | |
74ff3298 JR |
168 | static const struct eth_addr eth_addr_bfd OVS_UNUSED |
169 | = { { { 0x00, 0x23, 0x20, 0x00, 0x00, 0x01 } } }; | |
170 | ||
171 | static inline bool eth_addr_is_broadcast(const struct eth_addr a) | |
064af421 | 172 | { |
74ff3298 | 173 | return (a.be16[0] & a.be16[1] & a.be16[2]) == htons(0xffff); |
064af421 BP |
174 | } |
175 | ||
74ff3298 | 176 | static inline bool eth_addr_is_multicast(const struct eth_addr a) |
064af421 | 177 | { |
74ff3298 | 178 | return a.ea[0] & 1; |
064af421 | 179 | } |
74ff3298 JR |
180 | |
181 | static inline bool eth_addr_is_local(const struct eth_addr a) | |
064af421 | 182 | { |
70150daf JG |
183 | /* Local if it is either a locally administered address or a Nicira random |
184 | * address. */ | |
74ff3298 JR |
185 | return a.ea[0] & 2 |
186 | || (a.be16[0] == htons(0x0023) | |
187 | && (a.be16[1] & htons(0xff80)) == htons(0x2080)); | |
064af421 | 188 | } |
74ff3298 | 189 | static inline bool eth_addr_is_zero(const struct eth_addr a) |
064af421 | 190 | { |
74ff3298 | 191 | return !(a.be16[0] | a.be16[1] | a.be16[2]); |
064af421 | 192 | } |
b2342f7a BP |
193 | static inline bool eth_addr64_is_zero(const struct eth_addr64 a) |
194 | { | |
195 | return !(a.be16[0] | a.be16[1] | a.be16[2] | a.be16[3]); | |
196 | } | |
3b4d8ad3 | 197 | |
74ff3298 | 198 | static inline int eth_mask_is_exact(const struct eth_addr a) |
3b4d8ad3 | 199 | { |
74ff3298 | 200 | return (a.be16[0] & a.be16[1] & a.be16[2]) == htons(0xffff); |
3b4d8ad3 JS |
201 | } |
202 | ||
74ff3298 JR |
203 | static inline int eth_addr_compare_3way(const struct eth_addr a, |
204 | const struct eth_addr b) | |
130f6e5f | 205 | { |
74ff3298 | 206 | return memcmp(&a, &b, sizeof a); |
130f6e5f | 207 | } |
b2342f7a BP |
208 | static inline int eth_addr64_compare_3way(const struct eth_addr64 a, |
209 | const struct eth_addr64 b) | |
210 | { | |
211 | return memcmp(&a, &b, sizeof a); | |
212 | } | |
74ff3298 JR |
213 | |
214 | static inline bool eth_addr_equals(const struct eth_addr a, | |
215 | const struct eth_addr b) | |
064af421 | 216 | { |
130f6e5f | 217 | return !eth_addr_compare_3way(a, b); |
064af421 | 218 | } |
b2342f7a BP |
219 | static inline bool eth_addr64_equals(const struct eth_addr64 a, |
220 | const struct eth_addr64 b) | |
221 | { | |
222 | return !eth_addr64_compare_3way(a, b); | |
223 | } | |
74ff3298 JR |
224 | |
225 | static inline bool eth_addr_equal_except(const struct eth_addr a, | |
226 | const struct eth_addr b, | |
227 | const struct eth_addr mask) | |
3b4d8ad3 | 228 | { |
74ff3298 JR |
229 | return !(((a.be16[0] ^ b.be16[0]) & mask.be16[0]) |
230 | || ((a.be16[1] ^ b.be16[1]) & mask.be16[1]) | |
231 | || ((a.be16[2] ^ b.be16[2]) & mask.be16[2])); | |
3b4d8ad3 | 232 | } |
74ff3298 JR |
233 | |
234 | static inline uint64_t eth_addr_to_uint64(const struct eth_addr ea) | |
064af421 | 235 | { |
74ff3298 JR |
236 | return (((uint64_t) ntohs(ea.be16[0]) << 32) |
237 | | ((uint64_t) ntohs(ea.be16[1]) << 16) | |
238 | | ntohs(ea.be16[2])); | |
064af421 | 239 | } |
74ff3298 JR |
240 | |
241 | static inline uint64_t eth_addr_vlan_to_uint64(const struct eth_addr ea, | |
7e36ac42 AZ |
242 | uint16_t vlan) |
243 | { | |
244 | return (((uint64_t)vlan << 48) | eth_addr_to_uint64(ea)); | |
245 | } | |
74ff3298 JR |
246 | |
247 | static inline void eth_addr_from_uint64(uint64_t x, struct eth_addr *ea) | |
248 | { | |
249 | ea->be16[0] = htons(x >> 32); | |
37ba4764 AC |
250 | ea->be16[1] = htons((x & 0xFFFF0000) >> 16); |
251 | ea->be16[2] = htons(x & 0xFFFF); | |
74ff3298 JR |
252 | } |
253 | ||
254 | static inline struct eth_addr eth_addr_invert(const struct eth_addr src) | |
064af421 | 255 | { |
74ff3298 JR |
256 | struct eth_addr dst; |
257 | ||
258 | for (int i = 0; i < ARRAY_SIZE(src.be16); i++) { | |
259 | dst.be16[i] = ~src.be16[i]; | |
260 | } | |
261 | ||
262 | return dst; | |
064af421 | 263 | } |
74ff3298 JR |
264 | |
265 | static inline void eth_addr_mark_random(struct eth_addr *ea) | |
064af421 | 266 | { |
74ff3298 JR |
267 | ea->ea[0] &= ~1; /* Unicast. */ |
268 | ea->ea[0] |= 2; /* Private. */ | |
064af421 | 269 | } |
74ff3298 JR |
270 | |
271 | static inline void eth_addr_random(struct eth_addr *ea) | |
064af421 | 272 | { |
74ff3298 | 273 | random_bytes((uint8_t *)ea, sizeof *ea); |
064af421 BP |
274 | eth_addr_mark_random(ea); |
275 | } | |
74ff3298 JR |
276 | |
277 | static inline void eth_addr_nicira_random(struct eth_addr *ea) | |
70150daf JG |
278 | { |
279 | eth_addr_random(ea); | |
280 | ||
281 | /* Set the OUI to the Nicira one. */ | |
74ff3298 JR |
282 | ea->ea[0] = 0x00; |
283 | ea->ea[1] = 0x23; | |
284 | ea->ea[2] = 0x20; | |
70150daf JG |
285 | |
286 | /* Set the top bit to indicate random Nicira address. */ | |
74ff3298 | 287 | ea->ea[3] |= 0x80; |
70150daf | 288 | } |
74ff3298 | 289 | static inline uint32_t hash_mac(const struct eth_addr ea, |
7e36ac42 AZ |
290 | const uint16_t vlan, const uint32_t basis) |
291 | { | |
292 | return hash_uint64_basis(eth_addr_vlan_to_uint64(ea, vlan), basis); | |
293 | } | |
064af421 | 294 | |
74ff3298 JR |
295 | bool eth_addr_is_reserved(const struct eth_addr); |
296 | bool eth_addr_from_string(const char *, struct eth_addr *); | |
76343538 | 297 | |
74ff3298 | 298 | void compose_rarp(struct dp_packet *, const struct eth_addr); |
b9e8b45a | 299 | |
cf62fa4c PS |
300 | void eth_push_vlan(struct dp_packet *, ovs_be16 tpid, ovs_be16 tci); |
301 | void eth_pop_vlan(struct dp_packet *); | |
7c66b273 | 302 | |
cf62fa4c | 303 | const char *eth_from_hex(const char *hex, struct dp_packet **packetp); |
74ff3298 JR |
304 | void eth_format_masked(const struct eth_addr ea, |
305 | const struct eth_addr *mask, struct ds *s); | |
e22f1753 | 306 | |
cf62fa4c PS |
307 | void set_mpls_lse(struct dp_packet *, ovs_be32 label); |
308 | void push_mpls(struct dp_packet *packet, ovs_be16 ethtype, ovs_be32 lse); | |
309 | void pop_mpls(struct dp_packet *, ovs_be16 ethtype); | |
b02475c5 | 310 | |
b676167a | 311 | void set_mpls_lse_ttl(ovs_be32 *lse, uint8_t ttl); |
b02475c5 SH |
312 | void set_mpls_lse_tc(ovs_be32 *lse, uint8_t tc); |
313 | void set_mpls_lse_label(ovs_be32 *lse, ovs_be32 label); | |
314 | void set_mpls_lse_bos(ovs_be32 *lse, uint8_t bos); | |
315 | ovs_be32 set_mpls_lse_values(uint8_t ttl, uint8_t tc, uint8_t bos, | |
316 | ovs_be32 label); | |
317 | ||
eaa71334 BP |
318 | /* Example: |
319 | * | |
74ff3298 | 320 | * struct eth_addr mac; |
eaa71334 BP |
321 | * [...] |
322 | * printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac)); | |
323 | * | |
324 | */ | |
064af421 BP |
325 | #define ETH_ADDR_FMT \ |
326 | "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8 | |
ca92d173 AC |
327 | #define ETH_ADDR_ARGS(EA) ETH_ADDR_BYTES_ARGS((EA).ea) |
328 | #define ETH_ADDR_BYTES_ARGS(EAB) \ | |
329 | (EAB)[0], (EAB)[1], (EAB)[2], (EAB)[3], (EAB)[4], (EAB)[5] | |
b0d390e5 | 330 | #define ETH_ADDR_STRLEN 17 |
064af421 | 331 | |
b2342f7a BP |
332 | /* Example: |
333 | * | |
334 | * struct eth_addr64 eui64; | |
335 | * [...] | |
336 | * printf("The EUI-64 address is "ETH_ADDR64_FMT"\n", ETH_ADDR64_ARGS(mac)); | |
337 | * | |
338 | */ | |
339 | #define ETH_ADDR64_FMT \ | |
340 | "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":" \ | |
341 | "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8 | |
342 | #define ETH_ADDR64_ARGS(EA) ETH_ADDR64_BYTES_ARGS((EA).ea64) | |
343 | #define ETH_ADDR64_BYTES_ARGS(EAB) \ | |
344 | (EAB)[0], (EAB)[1], (EAB)[2], (EAB)[3], \ | |
345 | (EAB)[4], (EAB)[5], (EAB)[6], (EAB)[7] | |
346 | #define ETH_ADDR64_STRLEN 23 | |
347 | ||
eaa71334 BP |
348 | /* Example: |
349 | * | |
350 | * char *string = "1 00:11:22:33:44:55 2"; | |
74ff3298 | 351 | * struct eth_addr mac; |
eaa71334 BP |
352 | * int a, b; |
353 | * | |
c2c28dfd BP |
354 | * if (ovs_scan(string, "%d"ETH_ADDR_SCAN_FMT"%d", |
355 | * &a, ETH_ADDR_SCAN_ARGS(mac), &b)) { | |
eaa71334 BP |
356 | * ... |
357 | * } | |
358 | */ | |
359 | #define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8 | |
74ff3298 JR |
360 | #define ETH_ADDR_SCAN_ARGS(EA) \ |
361 | &(EA).ea[0], &(EA).ea[1], &(EA).ea[2], &(EA).ea[3], &(EA).ea[4], &(EA).ea[5] | |
eaa71334 | 362 | |
064af421 BP |
363 | #define ETH_TYPE_IP 0x0800 |
364 | #define ETH_TYPE_ARP 0x0806 | |
a36de779 | 365 | #define ETH_TYPE_TEB 0x6558 |
3e34fbdd IY |
366 | #define ETH_TYPE_VLAN_8021Q 0x8100 |
367 | #define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q | |
368 | #define ETH_TYPE_VLAN_8021AD 0x88a8 | |
d31f1109 | 369 | #define ETH_TYPE_IPV6 0x86dd |
c25c91fd | 370 | #define ETH_TYPE_LACP 0x8809 |
38f7147c | 371 | #define ETH_TYPE_RARP 0x8035 |
4fba171d BP |
372 | #define ETH_TYPE_MPLS 0x8847 |
373 | #define ETH_TYPE_MPLS_MCAST 0x8848 | |
064af421 | 374 | |
b02475c5 SH |
375 | static inline bool eth_type_mpls(ovs_be16 eth_type) |
376 | { | |
377 | return eth_type == htons(ETH_TYPE_MPLS) || | |
378 | eth_type == htons(ETH_TYPE_MPLS_MCAST); | |
379 | } | |
380 | ||
d6943394 TH |
381 | static inline bool eth_type_vlan(ovs_be16 eth_type) |
382 | { | |
383 | return eth_type == htons(ETH_TYPE_VLAN_8021Q) || | |
384 | eth_type == htons(ETH_TYPE_VLAN_8021AD); | |
385 | } | |
386 | ||
387 | ||
36956a7d BP |
388 | /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame |
389 | * lengths. */ | |
390 | #define ETH_TYPE_MIN 0x600 | |
391 | ||
064af421 BP |
392 | #define ETH_HEADER_LEN 14 |
393 | #define ETH_PAYLOAD_MIN 46 | |
394 | #define ETH_PAYLOAD_MAX 1500 | |
395 | #define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN) | |
396 | #define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX) | |
397 | #define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX) | |
13b6bae6 | 398 | OVS_PACKED( |
064af421 | 399 | struct eth_header { |
74ff3298 JR |
400 | struct eth_addr eth_dst; |
401 | struct eth_addr eth_src; | |
d5ca4fce | 402 | ovs_be16 eth_type; |
13b6bae6 | 403 | }); |
064af421 BP |
404 | BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header)); |
405 | ||
406 | #define LLC_DSAP_SNAP 0xaa | |
407 | #define LLC_SSAP_SNAP 0xaa | |
408 | #define LLC_CNTL_SNAP 3 | |
409 | ||
410 | #define LLC_HEADER_LEN 3 | |
13b6bae6 | 411 | OVS_PACKED( |
064af421 BP |
412 | struct llc_header { |
413 | uint8_t llc_dsap; | |
414 | uint8_t llc_ssap; | |
415 | uint8_t llc_cntl; | |
13b6bae6 | 416 | }); |
064af421 BP |
417 | BUILD_ASSERT_DECL(LLC_HEADER_LEN == sizeof(struct llc_header)); |
418 | ||
9efd308e DV |
419 | /* LLC field values used for STP frames. */ |
420 | #define STP_LLC_SSAP 0x42 | |
421 | #define STP_LLC_DSAP 0x42 | |
422 | #define STP_LLC_CNTL 0x03 | |
423 | ||
064af421 BP |
424 | #define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so |
425 | sizeof(SNAP_ORG_ETHERNET) == 3. */ | |
426 | #define SNAP_HEADER_LEN 5 | |
13b6bae6 | 427 | OVS_PACKED( |
064af421 BP |
428 | struct snap_header { |
429 | uint8_t snap_org[3]; | |
d5ca4fce | 430 | ovs_be16 snap_type; |
13b6bae6 | 431 | }); |
064af421 BP |
432 | BUILD_ASSERT_DECL(SNAP_HEADER_LEN == sizeof(struct snap_header)); |
433 | ||
434 | #define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN) | |
13b6bae6 | 435 | OVS_PACKED( |
064af421 BP |
436 | struct llc_snap_header { |
437 | struct llc_header llc; | |
438 | struct snap_header snap; | |
13b6bae6 | 439 | }); |
064af421 BP |
440 | BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header)); |
441 | ||
442 | #define VLAN_VID_MASK 0x0fff | |
33ce24ed BP |
443 | #define VLAN_VID_SHIFT 0 |
444 | ||
064af421 | 445 | #define VLAN_PCP_MASK 0xe000 |
33ce24ed | 446 | #define VLAN_PCP_SHIFT 13 |
064af421 | 447 | |
26233bb4 | 448 | #define VLAN_CFI 0x1000 |
e6cc0bab | 449 | #define VLAN_CFI_SHIFT 12 |
26233bb4 BP |
450 | |
451 | /* Given the vlan_tci field from an 802.1Q header, in network byte order, | |
452 | * returns the VLAN ID in host byte order. */ | |
453 | static inline uint16_t | |
d5ca4fce | 454 | vlan_tci_to_vid(ovs_be16 vlan_tci) |
26233bb4 BP |
455 | { |
456 | return (ntohs(vlan_tci) & VLAN_VID_MASK) >> VLAN_VID_SHIFT; | |
457 | } | |
458 | ||
459 | /* Given the vlan_tci field from an 802.1Q header, in network byte order, | |
460 | * returns the priority code point (PCP) in host byte order. */ | |
461 | static inline int | |
d5ca4fce | 462 | vlan_tci_to_pcp(ovs_be16 vlan_tci) |
26233bb4 BP |
463 | { |
464 | return (ntohs(vlan_tci) & VLAN_PCP_MASK) >> VLAN_PCP_SHIFT; | |
465 | } | |
466 | ||
e6cc0bab AZ |
467 | /* Given the vlan_tci field from an 802.1Q header, in network byte order, |
468 | * returns the Canonical Format Indicator (CFI). */ | |
469 | static inline int | |
470 | vlan_tci_to_cfi(ovs_be16 vlan_tci) | |
471 | { | |
472 | return (vlan_tci & htons(VLAN_CFI)) != 0; | |
473 | } | |
474 | ||
064af421 BP |
475 | #define VLAN_HEADER_LEN 4 |
476 | struct vlan_header { | |
d5ca4fce EJ |
477 | ovs_be16 vlan_tci; /* Lowest 12 bits are VLAN ID. */ |
478 | ovs_be16 vlan_next_type; | |
064af421 BP |
479 | }; |
480 | BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header)); | |
481 | ||
482 | #define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN) | |
13b6bae6 | 483 | OVS_PACKED( |
064af421 | 484 | struct vlan_eth_header { |
74ff3298 JR |
485 | struct eth_addr veth_dst; |
486 | struct eth_addr veth_src; | |
d5ca4fce EJ |
487 | ovs_be16 veth_type; /* Always htons(ETH_TYPE_VLAN). */ |
488 | ovs_be16 veth_tci; /* Lowest 12 bits are VLAN ID. */ | |
489 | ovs_be16 veth_next_type; | |
13b6bae6 | 490 | }); |
064af421 BP |
491 | BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header)); |
492 | ||
b02475c5 SH |
493 | /* MPLS related definitions */ |
494 | #define MPLS_TTL_MASK 0x000000ff | |
495 | #define MPLS_TTL_SHIFT 0 | |
496 | ||
497 | #define MPLS_BOS_MASK 0x00000100 | |
498 | #define MPLS_BOS_SHIFT 8 | |
499 | ||
500 | #define MPLS_TC_MASK 0x00000e00 | |
501 | #define MPLS_TC_SHIFT 9 | |
502 | ||
503 | #define MPLS_LABEL_MASK 0xfffff000 | |
504 | #define MPLS_LABEL_SHIFT 12 | |
505 | ||
506 | #define MPLS_HLEN 4 | |
507 | ||
508 | struct mpls_hdr { | |
5fa008d4 | 509 | ovs_16aligned_be32 mpls_lse; |
b02475c5 SH |
510 | }; |
511 | BUILD_ASSERT_DECL(MPLS_HLEN == sizeof(struct mpls_hdr)); | |
512 | ||
513 | /* Given a mpls label stack entry in network byte order | |
514 | * return mpls label in host byte order */ | |
515 | static inline uint32_t | |
516 | mpls_lse_to_label(ovs_be32 mpls_lse) | |
517 | { | |
518 | return (ntohl(mpls_lse) & MPLS_LABEL_MASK) >> MPLS_LABEL_SHIFT; | |
519 | } | |
520 | ||
521 | /* Given a mpls label stack entry in network byte order | |
522 | * return mpls tc */ | |
523 | static inline uint8_t | |
524 | mpls_lse_to_tc(ovs_be32 mpls_lse) | |
525 | { | |
526 | return (ntohl(mpls_lse) & MPLS_TC_MASK) >> MPLS_TC_SHIFT; | |
527 | } | |
528 | ||
529 | /* Given a mpls label stack entry in network byte order | |
530 | * return mpls ttl */ | |
531 | static inline uint8_t | |
532 | mpls_lse_to_ttl(ovs_be32 mpls_lse) | |
533 | { | |
534 | return (ntohl(mpls_lse) & MPLS_TTL_MASK) >> MPLS_TTL_SHIFT; | |
535 | } | |
536 | ||
537 | /* Set TTL in mpls lse. */ | |
538 | static inline void | |
539 | flow_set_mpls_lse_ttl(ovs_be32 *mpls_lse, uint8_t ttl) | |
540 | { | |
541 | *mpls_lse &= ~htonl(MPLS_TTL_MASK); | |
542 | *mpls_lse |= htonl(ttl << MPLS_TTL_SHIFT); | |
543 | } | |
544 | ||
545 | /* Given a mpls label stack entry in network byte order | |
546 | * return mpls BoS bit */ | |
547 | static inline uint8_t | |
548 | mpls_lse_to_bos(ovs_be32 mpls_lse) | |
549 | { | |
550 | return (mpls_lse & htonl(MPLS_BOS_MASK)) != 0; | |
551 | } | |
552 | ||
ed36537e | 553 | #define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32 |
064af421 | 554 | #define IP_ARGS(ip) \ |
ed36537e BP |
555 | ntohl(ip) >> 24, \ |
556 | (ntohl(ip) >> 16) & 0xff, \ | |
557 | (ntohl(ip) >> 8) & 0xff, \ | |
558 | ntohl(ip) & 0xff | |
064af421 | 559 | |
3bffc610 BP |
560 | /* Example: |
561 | * | |
562 | * char *string = "1 33.44.55.66 2"; | |
563 | * ovs_be32 ip; | |
564 | * int a, b; | |
565 | * | |
c2c28dfd | 566 | * if (ovs_scan(string, "%d"IP_SCAN_FMT"%d", &a, IP_SCAN_ARGS(&ip), &b)) { |
3bffc610 BP |
567 | * ... |
568 | * } | |
569 | */ | |
570 | #define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8 | |
571 | #define IP_SCAN_ARGS(ip) \ | |
572 | ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \ | |
573 | &((uint8_t *) ip)[1], \ | |
574 | &((uint8_t *) ip)[2], \ | |
575 | &((uint8_t *) ip)[3] | |
3bffc610 | 576 | |
e2bfcad6 | 577 | #define IP_PORT_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8":%"SCNu16 |
578 | #define IP_PORT_SCAN_ARGS(ip, port) \ | |
579 | ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \ | |
580 | &((uint8_t *) ip)[1], \ | |
581 | &((uint8_t *) ip)[2], \ | |
582 | &((uint8_t *) ip)[3], \ | |
583 | ((void) (ovs_be16) *(port), (uint16_t *) port) | |
584 | ||
0596e897 BP |
585 | /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N |
586 | * high-order 1-bits and 32-N low-order 0-bits. */ | |
587 | static inline bool | |
588 | ip_is_cidr(ovs_be32 netmask) | |
589 | { | |
590 | uint32_t x = ~ntohl(netmask); | |
591 | return !(x & (x + 1)); | |
592 | } | |
b37e6334 BP |
593 | static inline bool |
594 | ip_is_multicast(ovs_be32 ip) | |
595 | { | |
596 | return (ip & htonl(0xf0000000)) == htonl(0xe0000000); | |
597 | } | |
7e598a7d FL |
598 | static inline bool |
599 | ip_is_local_multicast(ovs_be32 ip) | |
600 | { | |
601 | return (ip & htonl(0xffffff00)) == htonl(0xe0000000); | |
602 | } | |
aad29cd1 BP |
603 | int ip_count_cidr_bits(ovs_be32 netmask); |
604 | void ip_format_masked(ovs_be32 ip, ovs_be32 mask, struct ds *); | |
2b02db1b | 605 | bool ip_parse(const char *s, ovs_be32 *ip); |
e2bfcad6 | 606 | char *ip_parse_port(const char *s, ovs_be32 *ip, ovs_be16 *port) |
607 | OVS_WARN_UNUSED_RESULT; | |
61440451 BP |
608 | char *ip_parse_masked(const char *s, ovs_be32 *ip, ovs_be32 *mask) |
609 | OVS_WARN_UNUSED_RESULT; | |
2b02db1b BP |
610 | char *ip_parse_cidr(const char *s, ovs_be32 *ip, unsigned int *plen) |
611 | OVS_WARN_UNUSED_RESULT; | |
7dc88496 NS |
612 | char *ip_parse_masked_len(const char *s, int *n, ovs_be32 *ip, ovs_be32 *mask) |
613 | OVS_WARN_UNUSED_RESULT; | |
614 | char *ip_parse_cidr_len(const char *s, int *n, ovs_be32 *ip, | |
615 | unsigned int *plen) | |
616 | OVS_WARN_UNUSED_RESULT; | |
0596e897 | 617 | |
064af421 BP |
618 | #define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4) |
619 | #define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15) | |
620 | #define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl)) | |
621 | ||
6c99379e BP |
622 | #ifndef IPPROTO_SCTP |
623 | #define IPPROTO_SCTP 132 | |
624 | #endif | |
625 | ||
81f97b1e JR |
626 | #ifndef IPPROTO_DCCP |
627 | #define IPPROTO_DCCP 33 | |
628 | #endif | |
629 | ||
630 | #ifndef IPPROTO_IGMP | |
631 | #define IPPROTO_IGMP 2 | |
632 | #endif | |
633 | ||
634 | #ifndef IPPROTO_UDPLITE | |
635 | #define IPPROTO_UDPLITE 136 | |
636 | #endif | |
637 | ||
f1193301 | 638 | /* TOS fields. */ |
495fe264 JG |
639 | #define IP_ECN_NOT_ECT 0x0 |
640 | #define IP_ECN_ECT_1 0x01 | |
641 | #define IP_ECN_ECT_0 0x02 | |
642 | #define IP_ECN_CE 0x03 | |
f1193301 BP |
643 | #define IP_ECN_MASK 0x03 |
644 | #define IP_DSCP_MASK 0xfc | |
645 | ||
1bc3f0ed PS |
646 | static inline int |
647 | IP_ECN_is_ce(uint8_t dsfield) | |
648 | { | |
649 | return (dsfield & IP_ECN_MASK) == IP_ECN_CE; | |
650 | } | |
651 | ||
064af421 BP |
652 | #define IP_VERSION 4 |
653 | ||
654 | #define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */ | |
655 | #define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */ | |
656 | #define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */ | |
657 | #define IP_IS_FRAGMENT(ip_frag_off) \ | |
658 | ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK)) | |
659 | ||
660 | #define IP_HEADER_LEN 20 | |
661 | struct ip_header { | |
662 | uint8_t ip_ihl_ver; | |
663 | uint8_t ip_tos; | |
d5ca4fce EJ |
664 | ovs_be16 ip_tot_len; |
665 | ovs_be16 ip_id; | |
666 | ovs_be16 ip_frag_off; | |
064af421 BP |
667 | uint8_t ip_ttl; |
668 | uint8_t ip_proto; | |
d5ca4fce | 669 | ovs_be16 ip_csum; |
7c457c33 BP |
670 | ovs_16aligned_be32 ip_src; |
671 | ovs_16aligned_be32 ip_dst; | |
064af421 BP |
672 | }; |
673 | BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header)); | |
674 | ||
caf64dc9 DDP |
675 | /* ICMPv4 types. */ |
676 | #define ICMP4_ECHO_REPLY 0 | |
677 | #define ICMP4_DST_UNREACH 3 | |
678 | #define ICMP4_SOURCEQUENCH 4 | |
679 | #define ICMP4_REDIRECT 5 | |
680 | #define ICMP4_ECHO_REQUEST 8 | |
681 | #define ICMP4_TIME_EXCEEDED 11 | |
682 | #define ICMP4_PARAM_PROB 12 | |
683 | #define ICMP4_TIMESTAMP 13 | |
684 | #define ICMP4_TIMESTAMPREPLY 14 | |
685 | #define ICMP4_INFOREQUEST 15 | |
686 | #define ICMP4_INFOREPLY 16 | |
687 | ||
c4ccff78 | 688 | #define ICMP_HEADER_LEN 8 |
064af421 BP |
689 | struct icmp_header { |
690 | uint8_t icmp_type; | |
691 | uint8_t icmp_code; | |
d5ca4fce | 692 | ovs_be16 icmp_csum; |
c4ccff78 JG |
693 | union { |
694 | struct { | |
695 | ovs_be16 id; | |
696 | ovs_be16 seq; | |
697 | } echo; | |
698 | struct { | |
699 | ovs_be16 empty; | |
700 | ovs_be16 mtu; | |
701 | } frag; | |
7c457c33 | 702 | ovs_16aligned_be32 gateway; |
c4ccff78 | 703 | } icmp_fields; |
064af421 BP |
704 | }; |
705 | BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_header)); | |
706 | ||
8e451a96 DB |
707 | #define IGMP_HEADER_LEN 8 |
708 | struct igmp_header { | |
709 | uint8_t igmp_type; | |
710 | uint8_t igmp_code; | |
711 | ovs_be16 igmp_csum; | |
712 | ovs_16aligned_be32 group; | |
713 | }; | |
714 | BUILD_ASSERT_DECL(IGMP_HEADER_LEN == sizeof(struct igmp_header)); | |
715 | ||
e3102e42 TLSC |
716 | #define IGMPV3_HEADER_LEN 8 |
717 | struct igmpv3_header { | |
718 | uint8_t type; | |
719 | uint8_t rsvr1; | |
720 | ovs_be16 csum; | |
721 | ovs_be16 rsvr2; | |
722 | ovs_be16 ngrp; | |
723 | }; | |
724 | BUILD_ASSERT_DECL(IGMPV3_HEADER_LEN == sizeof(struct igmpv3_header)); | |
725 | ||
726 | #define IGMPV3_RECORD_LEN 8 | |
727 | struct igmpv3_record { | |
728 | uint8_t type; | |
729 | uint8_t aux_len; | |
730 | ovs_be16 nsrcs; | |
731 | ovs_16aligned_be32 maddr; | |
732 | }; | |
733 | BUILD_ASSERT_DECL(IGMPV3_RECORD_LEN == sizeof(struct igmpv3_record)); | |
734 | ||
8e451a96 DB |
735 | #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */ |
736 | #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */ | |
737 | #define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x12 */ | |
738 | #define IGMP_HOST_LEAVE_MESSAGE 0x17 | |
739 | #define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x12 */ | |
740 | ||
06994f87 TLSC |
741 | /* |
742 | * IGMPv3 and MLDv2 use the same codes. | |
743 | */ | |
e3102e42 TLSC |
744 | #define IGMPV3_MODE_IS_INCLUDE 1 |
745 | #define IGMPV3_MODE_IS_EXCLUDE 2 | |
746 | #define IGMPV3_CHANGE_TO_INCLUDE_MODE 3 | |
747 | #define IGMPV3_CHANGE_TO_EXCLUDE_MODE 4 | |
748 | #define IGMPV3_ALLOW_NEW_SOURCES 5 | |
749 | #define IGMPV3_BLOCK_OLD_SOURCES 6 | |
750 | ||
c6bcb685 JS |
751 | #define SCTP_HEADER_LEN 12 |
752 | struct sctp_header { | |
753 | ovs_be16 sctp_src; | |
754 | ovs_be16 sctp_dst; | |
5fa008d4 BP |
755 | ovs_16aligned_be32 sctp_vtag; |
756 | ovs_16aligned_be32 sctp_csum; | |
c6bcb685 JS |
757 | }; |
758 | BUILD_ASSERT_DECL(SCTP_HEADER_LEN == sizeof(struct sctp_header)); | |
759 | ||
064af421 BP |
760 | #define UDP_HEADER_LEN 8 |
761 | struct udp_header { | |
d5ca4fce EJ |
762 | ovs_be16 udp_src; |
763 | ovs_be16 udp_dst; | |
764 | ovs_be16 udp_len; | |
765 | ovs_be16 udp_csum; | |
064af421 BP |
766 | }; |
767 | BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header)); | |
768 | ||
a66733a8 JR |
769 | #define TCP_FIN 0x001 |
770 | #define TCP_SYN 0x002 | |
771 | #define TCP_RST 0x004 | |
772 | #define TCP_PSH 0x008 | |
773 | #define TCP_ACK 0x010 | |
774 | #define TCP_URG 0x020 | |
775 | #define TCP_ECE 0x040 | |
776 | #define TCP_CWR 0x080 | |
777 | #define TCP_NS 0x100 | |
064af421 | 778 | |
df9b6612 | 779 | #define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12))) |
a66733a8 | 780 | #define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff) |
419681da | 781 | #define TCP_FLAGS_BE16(tcp_ctl) ((tcp_ctl) & htons(0x0fff)) |
d84d4b88 | 782 | #define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12) |
064af421 BP |
783 | |
784 | #define TCP_HEADER_LEN 20 | |
785 | struct tcp_header { | |
d5ca4fce EJ |
786 | ovs_be16 tcp_src; |
787 | ovs_be16 tcp_dst; | |
7c457c33 BP |
788 | ovs_16aligned_be32 tcp_seq; |
789 | ovs_16aligned_be32 tcp_ack; | |
d5ca4fce EJ |
790 | ovs_be16 tcp_ctl; |
791 | ovs_be16 tcp_winsz; | |
792 | ovs_be16 tcp_csum; | |
793 | ovs_be16 tcp_urg; | |
064af421 BP |
794 | }; |
795 | BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header)); | |
796 | ||
07659514 | 797 | /* Connection states */ |
aa68cf38 RB |
798 | enum { |
799 | CS_NEW_BIT = 0, | |
800 | CS_ESTABLISHED_BIT = 1, | |
801 | CS_RELATED_BIT = 2, | |
802 | CS_REPLY_DIR_BIT = 3, | |
803 | CS_INVALID_BIT = 4, | |
804 | CS_TRACKED_BIT = 5, | |
805 | CS_SRC_NAT_BIT = 6, | |
806 | CS_DST_NAT_BIT = 7, | |
807 | }; | |
808 | ||
809 | enum { | |
810 | CS_NEW = (1 << CS_NEW_BIT), | |
811 | CS_ESTABLISHED = (1 << CS_ESTABLISHED_BIT), | |
812 | CS_RELATED = (1 << CS_RELATED_BIT), | |
813 | CS_REPLY_DIR = (1 << CS_REPLY_DIR_BIT), | |
814 | CS_INVALID = (1 << CS_INVALID_BIT), | |
815 | CS_TRACKED = (1 << CS_TRACKED_BIT), | |
816 | CS_SRC_NAT = (1 << CS_SRC_NAT_BIT), | |
817 | CS_DST_NAT = (1 << CS_DST_NAT_BIT), | |
818 | }; | |
07659514 JS |
819 | |
820 | /* Undefined connection state bits. */ | |
821 | #define CS_SUPPORTED_MASK (CS_NEW | CS_ESTABLISHED | CS_RELATED \ | |
9ac0aada JR |
822 | | CS_INVALID | CS_REPLY_DIR | CS_TRACKED \ |
823 | | CS_SRC_NAT | CS_DST_NAT) | |
07659514 JS |
824 | #define CS_UNSUPPORTED_MASK (~(uint32_t)CS_SUPPORTED_MASK) |
825 | ||
064af421 BP |
826 | #define ARP_HRD_ETHERNET 1 |
827 | #define ARP_PRO_IP 0x0800 | |
828 | #define ARP_OP_REQUEST 1 | |
829 | #define ARP_OP_REPLY 2 | |
7cb57d10 | 830 | #define ARP_OP_RARP 3 |
064af421 BP |
831 | |
832 | #define ARP_ETH_HEADER_LEN 28 | |
833 | struct arp_eth_header { | |
834 | /* Generic members. */ | |
d5ca4fce EJ |
835 | ovs_be16 ar_hrd; /* Hardware type. */ |
836 | ovs_be16 ar_pro; /* Protocol type. */ | |
064af421 BP |
837 | uint8_t ar_hln; /* Hardware address length. */ |
838 | uint8_t ar_pln; /* Protocol address length. */ | |
d5ca4fce | 839 | ovs_be16 ar_op; /* Opcode. */ |
064af421 BP |
840 | |
841 | /* Ethernet+IPv4 specific members. */ | |
74ff3298 JR |
842 | struct eth_addr ar_sha; /* Sender hardware address. */ |
843 | ovs_16aligned_be32 ar_spa; /* Sender protocol address. */ | |
844 | struct eth_addr ar_tha; /* Target hardware address. */ | |
845 | ovs_16aligned_be32 ar_tpa; /* Target protocol address. */ | |
7c457c33 | 846 | }; |
064af421 BP |
847 | BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header)); |
848 | ||
370e373b TLSC |
849 | #define IPV6_HEADER_LEN 40 |
850 | ||
4528f34f BP |
851 | /* Like struct in6_addr, but whereas that struct requires 32-bit alignment on |
852 | * most implementations, this one only requires 16-bit alignment. */ | |
853 | union ovs_16aligned_in6_addr { | |
854 | ovs_be16 be16[8]; | |
855 | ovs_16aligned_be32 be32[4]; | |
856 | }; | |
857 | ||
858 | /* Like struct in6_hdr, but whereas that struct requires 32-bit alignment, this | |
859 | * one only requires 16-bit alignment. */ | |
860 | struct ovs_16aligned_ip6_hdr { | |
861 | union { | |
862 | struct ovs_16aligned_ip6_hdrctl { | |
863 | ovs_16aligned_be32 ip6_un1_flow; | |
864 | ovs_be16 ip6_un1_plen; | |
865 | uint8_t ip6_un1_nxt; | |
866 | uint8_t ip6_un1_hlim; | |
867 | } ip6_un1; | |
868 | uint8_t ip6_un2_vfc; | |
869 | } ip6_ctlun; | |
870 | union ovs_16aligned_in6_addr ip6_src; | |
871 | union ovs_16aligned_in6_addr ip6_dst; | |
872 | }; | |
873 | ||
874 | /* Like struct in6_frag, but whereas that struct requires 32-bit alignment, | |
875 | * this one only requires 16-bit alignment. */ | |
876 | struct ovs_16aligned_ip6_frag { | |
877 | uint8_t ip6f_nxt; | |
878 | uint8_t ip6f_reserved; | |
879 | ovs_be16 ip6f_offlg; | |
880 | ovs_16aligned_be32 ip6f_ident; | |
881 | }; | |
882 | ||
5abf65d0 JG |
883 | #define ICMP6_HEADER_LEN 4 |
884 | struct icmp6_header { | |
885 | uint8_t icmp6_type; | |
886 | uint8_t icmp6_code; | |
887 | ovs_be16 icmp6_cksum; | |
5abf65d0 JG |
888 | }; |
889 | BUILD_ASSERT_DECL(ICMP6_HEADER_LEN == sizeof(struct icmp6_header)); | |
890 | ||
370e373b | 891 | uint32_t packet_csum_pseudoheader6(const struct ovs_16aligned_ip6_hdr *); |
46445c63 EC |
892 | uint16_t packet_csum_upperlayer6(const struct ovs_16aligned_ip6_hdr *, |
893 | const void *, uint8_t, uint16_t); | |
370e373b | 894 | |
e60e935b SRCSA |
895 | /* Neighbor Discovery option field. |
896 | * ND options are always a multiple of 8 bytes in size. */ | |
897 | #define ND_OPT_LEN 8 | |
898 | struct ovs_nd_opt { | |
899 | uint8_t nd_opt_type; /* Values defined in icmp6.h */ | |
900 | uint8_t nd_opt_len; /* in units of 8 octets (the size of this struct) */ | |
74ff3298 | 901 | struct eth_addr nd_opt_mac; /* Ethernet address in the case of SLL or TLL options */ |
e60e935b SRCSA |
902 | }; |
903 | BUILD_ASSERT_DECL(ND_OPT_LEN == sizeof(struct ovs_nd_opt)); | |
904 | ||
905 | /* Like struct nd_msg (from ndisc.h), but whereas that struct requires 32-bit | |
906 | * alignment, this one only requires 16-bit alignment. */ | |
907 | #define ND_MSG_LEN 24 | |
908 | struct ovs_nd_msg { | |
909 | struct icmp6_header icmph; | |
29d5e9a7 | 910 | ovs_16aligned_be32 rso_flags; |
e60e935b SRCSA |
911 | union ovs_16aligned_in6_addr target; |
912 | struct ovs_nd_opt options[0]; | |
913 | }; | |
914 | BUILD_ASSERT_DECL(ND_MSG_LEN == sizeof(struct ovs_nd_msg)); | |
915 | ||
fa7f915c JP |
916 | #define ND_RSO_ROUTER 0x80000000 |
917 | #define ND_RSO_SOLICITED 0x40000000 | |
918 | #define ND_RSO_OVERRIDE 0x20000000 | |
919 | ||
06994f87 TLSC |
920 | /* |
921 | * Use the same struct for MLD and MLD2, naming members as the defined fields in | |
922 | * in the corresponding version of the protocol, though they are reserved in the | |
923 | * other one. | |
924 | */ | |
925 | #define MLD_HEADER_LEN 8 | |
926 | struct mld_header { | |
927 | uint8_t type; | |
928 | uint8_t code; | |
929 | ovs_be16 csum; | |
930 | ovs_be16 mrd; | |
931 | ovs_be16 ngrp; | |
932 | }; | |
933 | BUILD_ASSERT_DECL(MLD_HEADER_LEN == sizeof(struct mld_header)); | |
934 | ||
935 | #define MLD2_RECORD_LEN 20 | |
936 | struct mld2_record { | |
937 | uint8_t type; | |
938 | uint8_t aux_len; | |
939 | ovs_be16 nsrcs; | |
940 | union ovs_16aligned_in6_addr maddr; | |
941 | }; | |
942 | BUILD_ASSERT_DECL(MLD2_RECORD_LEN == sizeof(struct mld2_record)); | |
943 | ||
944 | #define MLD_QUERY 130 | |
945 | #define MLD_REPORT 131 | |
946 | #define MLD_DONE 132 | |
947 | #define MLD2_REPORT 143 | |
948 | ||
fa8223b7 JP |
949 | /* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */ |
950 | #define IPV6_LABEL_MASK 0x000fffff | |
951 | ||
3bffc610 BP |
952 | /* Example: |
953 | * | |
954 | * char *string = "1 ::1 2"; | |
955 | * char ipv6_s[IPV6_SCAN_LEN + 1]; | |
956 | * struct in6_addr ipv6; | |
957 | * | |
c2c28dfd | 958 | * if (ovs_scan(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b) |
3bffc610 BP |
959 | * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) { |
960 | * ... | |
961 | * } | |
962 | */ | |
963 | #define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]" | |
964 | #define IPV6_SCAN_LEN 46 | |
965 | ||
d31f1109 JP |
966 | extern const struct in6_addr in6addr_exact; |
967 | #define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \ | |
968 | 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } } | |
969 | ||
06994f87 TLSC |
970 | extern const struct in6_addr in6addr_all_hosts; |
971 | #define IN6ADDR_ALL_HOSTS_INIT { { { 0xff,0x02,0x00,0x00,0x00,0x00,0x00,0x00, \ | |
972 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01 } } } | |
973 | ||
d31f1109 JP |
974 | static inline bool ipv6_addr_equals(const struct in6_addr *a, |
975 | const struct in6_addr *b) | |
976 | { | |
977 | #ifdef IN6_ARE_ADDR_EQUAL | |
978 | return IN6_ARE_ADDR_EQUAL(a, b); | |
979 | #else | |
980 | return !memcmp(a, b, sizeof(*a)); | |
981 | #endif | |
982 | } | |
983 | ||
33ac3c83 | 984 | /* Checks the IPv6 address in 'mask' for all zeroes. */ |
d31f1109 JP |
985 | static inline bool ipv6_mask_is_any(const struct in6_addr *mask) { |
986 | return ipv6_addr_equals(mask, &in6addr_any); | |
987 | } | |
988 | ||
989 | static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) { | |
990 | return ipv6_addr_equals(mask, &in6addr_exact); | |
991 | } | |
992 | ||
06994f87 TLSC |
993 | static inline bool ipv6_is_all_hosts(const struct in6_addr *addr) { |
994 | return ipv6_addr_equals(addr, &in6addr_all_hosts); | |
995 | } | |
996 | ||
8c46162b JB |
997 | static inline bool ipv6_addr_is_set(const struct in6_addr *addr) { |
998 | return !ipv6_addr_equals(addr, &in6addr_any); | |
999 | } | |
1000 | ||
1001 | static inline bool ipv6_addr_is_multicast(const struct in6_addr *ip) { | |
1002 | return ip->s6_addr[0] == 0xff; | |
1003 | } | |
1004 | ||
12d0ee08 BP |
1005 | static inline struct in6_addr |
1006 | in6_addr_mapped_ipv4(ovs_be32 ip4) | |
1007 | { | |
1008 | struct in6_addr ip6 = { .s6_addr = { [10] = 0xff, [11] = 0xff } }; | |
1009 | memcpy(&ip6.s6_addr[12], &ip4, 4); | |
1010 | return ip6; | |
1011 | } | |
1012 | ||
754c1feb | 1013 | static inline void |
12d0ee08 | 1014 | in6_addr_set_mapped_ipv4(struct in6_addr *ip6, ovs_be32 ip4) |
754c1feb | 1015 | { |
12d0ee08 | 1016 | *ip6 = in6_addr_mapped_ipv4(ip4); |
754c1feb TLSC |
1017 | } |
1018 | ||
1019 | static inline ovs_be32 | |
1020 | in6_addr_get_mapped_ipv4(const struct in6_addr *addr) | |
1021 | { | |
1022 | union ovs_16aligned_in6_addr *taddr = (void *) addr; | |
1023 | if (IN6_IS_ADDR_V4MAPPED(addr)) { | |
1024 | return get_16aligned_be32(&taddr->be32[3]); | |
1025 | } else { | |
1026 | return INADDR_ANY; | |
1027 | } | |
1028 | } | |
1029 | ||
c2b878e0 TLSC |
1030 | static inline void |
1031 | in6_addr_solicited_node(struct in6_addr *addr, const struct in6_addr *ip6) | |
1032 | { | |
1033 | union ovs_16aligned_in6_addr *taddr = (void *) addr; | |
1034 | memset(taddr->be16, 0, sizeof(taddr->be16)); | |
1035 | taddr->be16[0] = htons(0xff02); | |
1036 | taddr->be16[5] = htons(0x1); | |
1037 | taddr->be16[6] = htons(0xff00); | |
1038 | memcpy(&addr->s6_addr[13], &ip6->s6_addr[13], 3); | |
1039 | } | |
1040 | ||
7cc0741e NS |
1041 | /* |
1042 | * Generates ipv6 EUI64 address from the given eth addr | |
1043 | * and prefix and stores it in 'lla' | |
1044 | */ | |
1045 | static inline void | |
1046 | in6_generate_eui64(struct eth_addr ea, struct in6_addr *prefix, | |
1047 | struct in6_addr *lla) | |
1048 | { | |
1049 | union ovs_16aligned_in6_addr *taddr = (void *) lla; | |
1050 | union ovs_16aligned_in6_addr *prefix_taddr = (void *) prefix; | |
1051 | taddr->be16[0] = prefix_taddr->be16[0]; | |
1052 | taddr->be16[1] = prefix_taddr->be16[1]; | |
1053 | taddr->be16[2] = prefix_taddr->be16[2]; | |
1054 | taddr->be16[3] = prefix_taddr->be16[3]; | |
1055 | taddr->be16[4] = htons(((ea.ea[0] ^ 0x02) << 8) | ea.ea[1]); | |
1056 | taddr->be16[5] = htons(ea.ea[2] << 8 | 0x00ff); | |
1057 | taddr->be16[6] = htons(0xfe << 8 | ea.ea[3]); | |
1058 | taddr->be16[7] = ea.be16[2]; | |
1059 | } | |
1060 | ||
685f4dfe NS |
1061 | /* |
1062 | * Generates ipv6 link local address from the given eth addr | |
1063 | * with prefix 'fe80::/64' and stores it in 'lla' | |
1064 | */ | |
1065 | static inline void | |
1066 | in6_generate_lla(struct eth_addr ea, struct in6_addr *lla) | |
1067 | { | |
1068 | union ovs_16aligned_in6_addr *taddr = (void *) lla; | |
1069 | memset(taddr->be16, 0, sizeof(taddr->be16)); | |
1070 | taddr->be16[0] = htons(0xfe80); | |
1071 | taddr->be16[4] = htons(((ea.ea[0] ^ 0x02) << 8) | ea.ea[1]); | |
1072 | taddr->be16[5] = htons(ea.ea[2] << 8 | 0x00ff); | |
1073 | taddr->be16[6] = htons(0xfe << 8 | ea.ea[3]); | |
1074 | taddr->be16[7] = ea.be16[2]; | |
1075 | } | |
1076 | ||
6d1a4f16 JP |
1077 | /* Returns true if 'addr' is a link local address. Otherwise, false. */ |
1078 | static inline bool | |
1079 | in6_is_lla(struct in6_addr *addr) | |
1080 | { | |
1081 | #ifdef s6_addr32 | |
1082 | return addr->s6_addr32[0] == htonl(0xfe800000) && !(addr->s6_addr32[1]); | |
1083 | #else | |
bf32e3e2 JP |
1084 | return addr->s6_addr[0] == 0xfe && addr->s6_addr[1] == 0x80 && |
1085 | !(addr->s6_addr[2] | addr->s6_addr[3] | addr->s6_addr[4] | | |
1086 | addr->s6_addr[5] | addr->s6_addr[6] | addr->s6_addr[7]); | |
6d1a4f16 JP |
1087 | #endif |
1088 | } | |
1089 | ||
c2b878e0 TLSC |
1090 | static inline void |
1091 | ipv6_multicast_to_ethernet(struct eth_addr *eth, const struct in6_addr *ip6) | |
1092 | { | |
1093 | eth->ea[0] = 0x33; | |
1094 | eth->ea[1] = 0x33; | |
1095 | eth->ea[2] = ip6->s6_addr[12]; | |
1096 | eth->ea[3] = ip6->s6_addr[13]; | |
1097 | eth->ea[4] = ip6->s6_addr[14]; | |
1098 | eth->ea[5] = ip6->s6_addr[15]; | |
1099 | } | |
1100 | ||
e8c16d83 SH |
1101 | static inline bool dl_type_is_ip_any(ovs_be16 dl_type) |
1102 | { | |
1103 | return dl_type == htons(ETH_TYPE_IP) | |
1104 | || dl_type == htons(ETH_TYPE_IPV6); | |
1105 | } | |
1106 | ||
a36de779 | 1107 | /* Tunnel header */ |
e5a1caee | 1108 | |
a36de779 PS |
1109 | /* GRE protocol header */ |
1110 | struct gre_base_hdr { | |
1111 | ovs_be16 flags; | |
1112 | ovs_be16 protocol; | |
1113 | }; | |
1114 | ||
1115 | #define GRE_CSUM 0x8000 | |
1116 | #define GRE_ROUTING 0x4000 | |
1117 | #define GRE_KEY 0x2000 | |
1118 | #define GRE_SEQ 0x1000 | |
1119 | #define GRE_STRICT 0x0800 | |
1120 | #define GRE_REC 0x0700 | |
1121 | #define GRE_FLAGS 0x00F8 | |
1122 | #define GRE_VERSION 0x0007 | |
1123 | ||
1124 | /* VXLAN protocol header */ | |
1125 | struct vxlanhdr { | |
1126 | ovs_16aligned_be32 vx_flags; | |
1127 | ovs_16aligned_be32 vx_vni; | |
1128 | }; | |
1129 | ||
1130 | #define VXLAN_FLAGS 0x08000000 /* struct vxlanhdr.vx_flags required value. */ | |
1131 | ||
ac6d120f | 1132 | void ipv6_format_addr(const struct in6_addr *addr, struct ds *); |
9ac0aada JR |
1133 | void ipv6_format_addr_bracket(const struct in6_addr *addr, struct ds *, |
1134 | bool bracket); | |
ac6d120f JP |
1135 | void ipv6_format_mapped(const struct in6_addr *addr, struct ds *); |
1136 | void ipv6_format_masked(const struct in6_addr *addr, | |
1137 | const struct in6_addr *mask, struct ds *); | |
bed610e8 | 1138 | const char * ipv6_string_mapped(char *addr_str, const struct in6_addr *addr); |
d31f1109 JP |
1139 | struct in6_addr ipv6_addr_bitand(const struct in6_addr *src, |
1140 | const struct in6_addr *mask); | |
b0ad27f3 JP |
1141 | struct in6_addr ipv6_addr_bitxor(const struct in6_addr *a, |
1142 | const struct in6_addr *b); | |
1143 | bool ipv6_is_zero(const struct in6_addr *a); | |
d31f1109 JP |
1144 | struct in6_addr ipv6_create_mask(int mask); |
1145 | int ipv6_count_cidr_bits(const struct in6_addr *netmask); | |
1146 | bool ipv6_is_cidr(const struct in6_addr *netmask); | |
2b02db1b BP |
1147 | |
1148 | bool ipv6_parse(const char *s, struct in6_addr *ip); | |
fac5bd3c JP |
1149 | char *ipv6_parse_masked(const char *s, struct in6_addr *ipv6, |
1150 | struct in6_addr *mask); | |
2b02db1b BP |
1151 | char *ipv6_parse_cidr(const char *s, struct in6_addr *ip, unsigned int *plen) |
1152 | OVS_WARN_UNUSED_RESULT; | |
7dc88496 NS |
1153 | char *ipv6_parse_masked_len(const char *s, int *n, struct in6_addr *ipv6, |
1154 | struct in6_addr *mask); | |
1155 | char *ipv6_parse_cidr_len(const char *s, int *n, struct in6_addr *ip, | |
1156 | unsigned int *plen) | |
1157 | OVS_WARN_UNUSED_RESULT; | |
d31f1109 | 1158 | |
74ff3298 JR |
1159 | void *eth_compose(struct dp_packet *, const struct eth_addr eth_dst, |
1160 | const struct eth_addr eth_src, uint16_t eth_type, | |
5de1bb5c | 1161 | size_t size); |
74ff3298 JR |
1162 | void *snap_compose(struct dp_packet *, const struct eth_addr eth_dst, |
1163 | const struct eth_addr eth_src, | |
5de1bb5c | 1164 | unsigned int oui, uint16_t snap_type, size_t size); |
cf62fa4c | 1165 | void packet_set_ipv4(struct dp_packet *, ovs_be32 src, ovs_be32 dst, uint8_t tos, |
c97664b3 | 1166 | uint8_t ttl); |
fc052306 ZB |
1167 | void packet_set_ipv4_addr(struct dp_packet *packet, ovs_16aligned_be32 *addr, |
1168 | ovs_be32 new_addr); | |
932c96b7 JR |
1169 | void packet_set_ipv6(struct dp_packet *, const struct in6_addr *src, |
1170 | const struct in6_addr *dst, uint8_t tc, | |
038341d1 | 1171 | ovs_be32 fl, uint8_t hlmit); |
0e29d884 DB |
1172 | void packet_set_ipv6_addr(struct dp_packet *packet, uint8_t proto, |
1173 | ovs_16aligned_be32 addr[4], | |
1174 | const struct in6_addr *new_addr, | |
1175 | bool recalculate_csum); | |
cf62fa4c PS |
1176 | void packet_set_tcp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst); |
1177 | void packet_set_udp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst); | |
1178 | void packet_set_sctp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst); | |
b8786b18 | 1179 | void packet_set_icmp(struct dp_packet *, uint8_t type, uint8_t code); |
932c96b7 | 1180 | void packet_set_nd(struct dp_packet *, const struct in6_addr *target, |
74ff3298 | 1181 | const struct eth_addr sll, const struct eth_addr tll); |
40f78b38 | 1182 | |
a66733a8 | 1183 | void packet_format_tcp_flags(struct ds *, uint16_t); |
61bf6666 | 1184 | const char *packet_tcp_flag_to_string(uint32_t flag); |
6335d074 | 1185 | void compose_arp__(struct dp_packet *); |
eb0b295e | 1186 | void compose_arp(struct dp_packet *, uint16_t arp_op, |
74ff3298 JR |
1187 | const struct eth_addr arp_sha, |
1188 | const struct eth_addr arp_tha, bool broadcast, | |
eb0b295e | 1189 | ovs_be32 arp_spa, ovs_be32 arp_tpa); |
16187903 JP |
1190 | void compose_nd_ns(struct dp_packet *, const struct eth_addr eth_src, |
1191 | const struct in6_addr *ipv6_src, | |
1192 | const struct in6_addr *ipv6_dst); | |
1193 | void compose_nd_na(struct dp_packet *, const struct eth_addr eth_src, | |
1194 | const struct eth_addr eth_dst, | |
1195 | const struct in6_addr *ipv6_src, | |
1196 | const struct in6_addr *ipv6_dst, | |
1197 | ovs_be32 rso_flags); | |
0292a0c9 | 1198 | uint32_t packet_csum_pseudoheader(const struct ip_header *); |
1bc3f0ed | 1199 | void IP_ECN_set_ce(struct dp_packet *pkt, bool is_ipv6); |
12113c39 | 1200 | |
064af421 | 1201 | #endif /* packets.h */ |