2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 Nicira, Inc.
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:
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
21 #include <sys/types.h>
25 #include "openvswitch/geneve.h"
26 #include "openvswitch/packets.h"
27 #include "openvswitch/types.h"
28 #include "openvswitch/nsh.h"
29 #include "odp-netlink.h"
32 #include "tun-metadata.h"
33 #include "unaligned.h"
39 /* Purely internal to OVS userspace. These flags should never be exposed to
40 * the outside world and so aren't included in the flags mask. */
42 /* Tunnel information is in userspace datapath format. */
43 #define FLOW_TNL_F_UDPIF (1 << 4)
45 static inline bool ipv6_addr_is_set(const struct in6_addr
*addr
);
48 flow_tnl_dst_is_set(const struct flow_tnl
*tnl
)
50 return tnl
->ip_dst
|| ipv6_addr_is_set(&tnl
->ipv6_dst
);
53 struct in6_addr
flow_tnl_dst(const struct flow_tnl
*tnl
);
54 struct in6_addr
flow_tnl_src(const struct flow_tnl
*tnl
);
56 /* Returns an offset to 'src' covering all the meaningful fields in 'src'. */
58 flow_tnl_size(const struct flow_tnl
*src
)
60 if (!flow_tnl_dst_is_set(src
)) {
61 /* Covers ip_dst and ipv6_dst only. */
62 return offsetof(struct flow_tnl
, ip_src
);
64 if (src
->flags
& FLOW_TNL_F_UDPIF
) {
65 /* Datapath format, cover all options we have. */
66 return offsetof(struct flow_tnl
, metadata
.opts
)
67 + src
->metadata
.present
.len
;
69 if (!src
->metadata
.present
.map
) {
70 /* No TLVs, opts is irrelevant. */
71 return offsetof(struct flow_tnl
, metadata
.opts
);
73 /* Have decoded TLVs, opts is relevant. */
77 /* Copy flow_tnl, but avoid copying unused portions of tun_metadata. Unused
78 * data in 'dst' is NOT cleared, so this must not be used in cases where the
79 * uninitialized portion may be hashed over. */
81 flow_tnl_copy__(struct flow_tnl
*dst
, const struct flow_tnl
*src
)
83 memcpy(dst
, src
, flow_tnl_size(src
));
87 flow_tnl_equal(const struct flow_tnl
*a
, const struct flow_tnl
*b
)
89 size_t a_size
= flow_tnl_size(a
);
91 return a_size
== flow_tnl_size(b
) && !memcmp(a
, b
, a_size
);
94 /* Datapath packet metadata */
96 PADDED_MEMBERS_CACHELINE_MARKER(CACHE_LINE_SIZE
, cacheline0
,
97 uint32_t recirc_id
; /* Recirculation id carried with the
98 recirculating packets. 0 for packets
99 received from the wire. */
100 uint32_t dp_hash
; /* hash value computed by the recirculation
102 uint32_t skb_priority
; /* Packet priority for QoS. */
103 uint32_t pkt_mark
; /* Packet mark. */
104 uint8_t ct_state
; /* Connection state. */
105 bool ct_orig_tuple_ipv6
;
106 uint16_t ct_zone
; /* Connection zone. */
107 uint32_t ct_mark
; /* Connection mark. */
108 ovs_u128 ct_label
; /* Connection label. */
109 union flow_in_port in_port
; /* Input port. */
112 PADDED_MEMBERS_CACHELINE_MARKER(CACHE_LINE_SIZE
, cacheline1
,
113 union { /* Populated only for non-zero 'ct_state'. */
114 struct ovs_key_ct_tuple_ipv4 ipv4
;
115 struct ovs_key_ct_tuple_ipv6 ipv6
; /* Used only if */
116 } ct_orig_tuple
; /* 'ct_orig_tuple_ipv6' is set */
119 PADDED_MEMBERS_CACHELINE_MARKER(CACHE_LINE_SIZE
, cacheline2
,
120 struct flow_tnl tunnel
; /* Encapsulating tunnel parameters. Note that
121 * if 'ip_dst' == 0, the rest of the fields may
122 * be uninitialized. */
126 BUILD_ASSERT_DECL(offsetof(struct pkt_metadata
, cacheline0
) == 0);
127 BUILD_ASSERT_DECL(offsetof(struct pkt_metadata
, cacheline1
) ==
129 BUILD_ASSERT_DECL(offsetof(struct pkt_metadata
, cacheline2
) ==
130 2 * CACHE_LINE_SIZE
);
133 pkt_metadata_init_tnl(struct pkt_metadata
*md
)
135 /* Zero up through the tunnel metadata options. The length and table
136 * are before this and as long as they are empty, the options won't
138 memset(md
, 0, offsetof(struct pkt_metadata
, tunnel
.metadata
.opts
));
142 pkt_metadata_init(struct pkt_metadata
*md
, odp_port_t port
)
144 /* This is called for every packet in userspace datapath and affects
145 * performance if all the metadata is initialized. Hence, fields should
146 * only be zeroed out when necessary.
148 * Initialize only till ct_state. Once the ct_state is zeroed out rest
149 * of ct fields will not be looked at unless ct_state != 0.
151 memset(md
, 0, offsetof(struct pkt_metadata
, ct_orig_tuple_ipv6
));
153 /* It can be expensive to zero out all of the tunnel metadata. However,
154 * we can just zero out ip_dst and the rest of the data will never be
156 md
->tunnel
.ip_dst
= 0;
157 md
->tunnel
.ipv6_dst
= in6addr_any
;
158 md
->in_port
.odp_port
= port
;
161 /* This function prefetches the cachelines touched by pkt_metadata_init()
162 * For performance reasons the two functions should be kept in sync. */
164 pkt_metadata_prefetch_init(struct pkt_metadata
*md
)
166 /* Prefetch cacheline0 as members till ct_state and odp_port will
167 * be initialized later in pkt_metadata_init(). */
168 OVS_PREFETCH(md
->cacheline0
);
170 /* Prefetch cachline2 as ip_dst & ipv6_dst fields will be initialized. */
171 OVS_PREFETCH(md
->cacheline2
);
174 bool dpid_from_string(const char *s
, uint64_t *dpidp
);
176 #define ETH_ADDR_LEN 6
178 static const struct eth_addr eth_addr_broadcast OVS_UNUSED
179 = { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } } };
181 static const struct eth_addr eth_addr_exact OVS_UNUSED
182 = { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } } };
184 static const struct eth_addr eth_addr_zero OVS_UNUSED
185 = { { { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } };
186 static const struct eth_addr64 eth_addr64_zero OVS_UNUSED
187 = { { { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } };
189 static const struct eth_addr eth_addr_stp OVS_UNUSED
190 = { { { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00 } } };
192 static const struct eth_addr eth_addr_lacp OVS_UNUSED
193 = { { { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 } } };
195 static const struct eth_addr eth_addr_bfd OVS_UNUSED
196 = { { { 0x00, 0x23, 0x20, 0x00, 0x00, 0x01 } } };
198 static inline bool eth_addr_is_broadcast(const struct eth_addr a
)
200 return (a
.be16
[0] & a
.be16
[1] & a
.be16
[2]) == htons(0xffff);
203 static inline bool eth_addr_is_multicast(const struct eth_addr a
)
208 static inline bool eth_addr_is_local(const struct eth_addr a
)
210 /* Local if it is either a locally administered address or a Nicira random
213 || (a
.be16
[0] == htons(0x0023)
214 && (a
.be16
[1] & htons(0xff80)) == htons(0x2080));
216 static inline bool eth_addr_is_zero(const struct eth_addr a
)
218 return !(a
.be16
[0] | a
.be16
[1] | a
.be16
[2]);
220 static inline bool eth_addr64_is_zero(const struct eth_addr64 a
)
222 return !(a
.be16
[0] | a
.be16
[1] | a
.be16
[2] | a
.be16
[3]);
225 static inline int eth_mask_is_exact(const struct eth_addr a
)
227 return (a
.be16
[0] & a
.be16
[1] & a
.be16
[2]) == htons(0xffff);
230 static inline int eth_addr_compare_3way(const struct eth_addr a
,
231 const struct eth_addr b
)
233 return memcmp(&a
, &b
, sizeof a
);
235 static inline int eth_addr64_compare_3way(const struct eth_addr64 a
,
236 const struct eth_addr64 b
)
238 return memcmp(&a
, &b
, sizeof a
);
241 static inline bool eth_addr_equals(const struct eth_addr a
,
242 const struct eth_addr b
)
244 return !eth_addr_compare_3way(a
, b
);
246 static inline bool eth_addr64_equals(const struct eth_addr64 a
,
247 const struct eth_addr64 b
)
249 return !eth_addr64_compare_3way(a
, b
);
252 static inline bool eth_addr_equal_except(const struct eth_addr a
,
253 const struct eth_addr b
,
254 const struct eth_addr mask
)
256 return !(((a
.be16
[0] ^ b
.be16
[0]) & mask
.be16
[0])
257 || ((a
.be16
[1] ^ b
.be16
[1]) & mask
.be16
[1])
258 || ((a
.be16
[2] ^ b
.be16
[2]) & mask
.be16
[2]));
261 static inline uint64_t eth_addr_to_uint64(const struct eth_addr ea
)
263 return (((uint64_t) ntohs(ea
.be16
[0]) << 32)
264 | ((uint64_t) ntohs(ea
.be16
[1]) << 16)
265 | ntohs(ea
.be16
[2]));
268 static inline uint64_t eth_addr_vlan_to_uint64(const struct eth_addr ea
,
271 return (((uint64_t)vlan
<< 48) | eth_addr_to_uint64(ea
));
274 static inline void eth_addr_from_uint64(uint64_t x
, struct eth_addr
*ea
)
276 ea
->be16
[0] = htons(x
>> 32);
277 ea
->be16
[1] = htons((x
& 0xFFFF0000) >> 16);
278 ea
->be16
[2] = htons(x
& 0xFFFF);
281 static inline struct eth_addr
eth_addr_invert(const struct eth_addr src
)
285 for (int i
= 0; i
< ARRAY_SIZE(src
.be16
); i
++) {
286 dst
.be16
[i
] = ~src
.be16
[i
];
292 static inline void eth_addr_mark_random(struct eth_addr
*ea
)
294 ea
->ea
[0] &= ~1; /* Unicast. */
295 ea
->ea
[0] |= 2; /* Private. */
298 static inline void eth_addr_random(struct eth_addr
*ea
)
300 random_bytes((uint8_t *)ea
, sizeof *ea
);
301 eth_addr_mark_random(ea
);
304 static inline void eth_addr_nicira_random(struct eth_addr
*ea
)
308 /* Set the OUI to the Nicira one. */
313 /* Set the top bit to indicate random Nicira address. */
316 static inline uint32_t hash_mac(const struct eth_addr ea
,
317 const uint16_t vlan
, const uint32_t basis
)
319 return hash_uint64_basis(eth_addr_vlan_to_uint64(ea
, vlan
), basis
);
322 bool eth_addr_is_reserved(const struct eth_addr
);
323 bool eth_addr_from_string(const char *, struct eth_addr
*);
325 void compose_rarp(struct dp_packet
*, const struct eth_addr
);
327 void eth_push_vlan(struct dp_packet
*, ovs_be16 tpid
, ovs_be16 tci
);
328 void eth_pop_vlan(struct dp_packet
*);
330 const char *eth_from_hex(const char *hex
, struct dp_packet
**packetp
);
331 void eth_format_masked(const struct eth_addr ea
,
332 const struct eth_addr
*mask
, struct ds
*s
);
334 void set_mpls_lse(struct dp_packet
*, ovs_be32 label
);
335 void push_mpls(struct dp_packet
*packet
, ovs_be16 ethtype
, ovs_be32 lse
);
336 void pop_mpls(struct dp_packet
*, ovs_be16 ethtype
);
338 void set_mpls_lse_ttl(ovs_be32
*lse
, uint8_t ttl
);
339 void set_mpls_lse_tc(ovs_be32
*lse
, uint8_t tc
);
340 void set_mpls_lse_label(ovs_be32
*lse
, ovs_be32 label
);
341 void set_mpls_lse_bos(ovs_be32
*lse
, uint8_t bos
);
342 ovs_be32
set_mpls_lse_values(uint8_t ttl
, uint8_t tc
, uint8_t bos
,
347 * struct eth_addr mac;
349 * printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac));
352 #define ETH_ADDR_FMT \
353 "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
354 #define ETH_ADDR_ARGS(EA) ETH_ADDR_BYTES_ARGS((EA).ea)
355 #define ETH_ADDR_BYTES_ARGS(EAB) \
356 (EAB)[0], (EAB)[1], (EAB)[2], (EAB)[3], (EAB)[4], (EAB)[5]
357 #define ETH_ADDR_STRLEN 17
361 * struct eth_addr64 eui64;
363 * printf("The EUI-64 address is "ETH_ADDR64_FMT"\n", ETH_ADDR64_ARGS(mac));
366 #define ETH_ADDR64_FMT \
367 "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":" \
368 "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
369 #define ETH_ADDR64_ARGS(EA) ETH_ADDR64_BYTES_ARGS((EA).ea64)
370 #define ETH_ADDR64_BYTES_ARGS(EAB) \
371 (EAB)[0], (EAB)[1], (EAB)[2], (EAB)[3], \
372 (EAB)[4], (EAB)[5], (EAB)[6], (EAB)[7]
373 #define ETH_ADDR64_STRLEN 23
377 * char *string = "1 00:11:22:33:44:55 2";
378 * struct eth_addr mac;
381 * if (ovs_scan(string, "%d"ETH_ADDR_SCAN_FMT"%d",
382 * &a, ETH_ADDR_SCAN_ARGS(mac), &b)) {
386 #define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8
387 #define ETH_ADDR_SCAN_ARGS(EA) \
388 &(EA).ea[0], &(EA).ea[1], &(EA).ea[2], &(EA).ea[3], &(EA).ea[4], &(EA).ea[5]
390 #define ETH_TYPE_IP 0x0800
391 #define ETH_TYPE_ARP 0x0806
392 #define ETH_TYPE_TEB 0x6558
393 #define ETH_TYPE_VLAN_8021Q 0x8100
394 #define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q
395 #define ETH_TYPE_VLAN_8021AD 0x88a8
396 #define ETH_TYPE_IPV6 0x86dd
397 #define ETH_TYPE_LACP 0x8809
398 #define ETH_TYPE_RARP 0x8035
399 #define ETH_TYPE_MPLS 0x8847
400 #define ETH_TYPE_MPLS_MCAST 0x8848
401 #define ETH_TYPE_NSH 0x894f
403 static inline bool eth_type_mpls(ovs_be16 eth_type
)
405 return eth_type
== htons(ETH_TYPE_MPLS
) ||
406 eth_type
== htons(ETH_TYPE_MPLS_MCAST
);
409 static inline bool eth_type_vlan(ovs_be16 eth_type
)
411 return eth_type
== htons(ETH_TYPE_VLAN_8021Q
) ||
412 eth_type
== htons(ETH_TYPE_VLAN_8021AD
);
416 /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame
418 #define ETH_TYPE_MIN 0x600
420 #define ETH_HEADER_LEN 14
421 #define ETH_PAYLOAD_MIN 46
422 #define ETH_PAYLOAD_MAX 1500
423 #define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN)
424 #define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX)
425 #define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX)
427 struct eth_addr eth_dst
;
428 struct eth_addr eth_src
;
431 BUILD_ASSERT_DECL(ETH_HEADER_LEN
== sizeof(struct eth_header
));
433 void push_eth(struct dp_packet
*packet
, const struct eth_addr
*dst
,
434 const struct eth_addr
*src
);
435 void pop_eth(struct dp_packet
*packet
);
437 void encap_nsh(struct dp_packet
*packet
,
438 const struct ovs_action_encap_nsh
*encap_nsh
);
439 bool decap_nsh(struct dp_packet
*packet
);
441 #define LLC_DSAP_SNAP 0xaa
442 #define LLC_SSAP_SNAP 0xaa
443 #define LLC_CNTL_SNAP 3
445 #define LLC_HEADER_LEN 3
451 BUILD_ASSERT_DECL(LLC_HEADER_LEN
== sizeof(struct llc_header
));
453 /* LLC field values used for STP frames. */
454 #define STP_LLC_SSAP 0x42
455 #define STP_LLC_DSAP 0x42
456 #define STP_LLC_CNTL 0x03
458 #define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so
459 sizeof(SNAP_ORG_ETHERNET) == 3. */
460 #define SNAP_HEADER_LEN 5
466 BUILD_ASSERT_DECL(SNAP_HEADER_LEN
== sizeof(struct snap_header
));
468 #define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN)
470 struct llc_snap_header
{
471 struct llc_header llc
;
472 struct snap_header snap
;
474 BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN
== sizeof(struct llc_snap_header
));
476 #define VLAN_VID_MASK 0x0fff
477 #define VLAN_VID_SHIFT 0
479 #define VLAN_PCP_MASK 0xe000
480 #define VLAN_PCP_SHIFT 13
482 #define VLAN_CFI 0x1000
483 #define VLAN_CFI_SHIFT 12
485 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
486 * returns the VLAN ID in host byte order. */
487 static inline uint16_t
488 vlan_tci_to_vid(ovs_be16 vlan_tci
)
490 return (ntohs(vlan_tci
) & VLAN_VID_MASK
) >> VLAN_VID_SHIFT
;
493 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
494 * returns the priority code point (PCP) in host byte order. */
496 vlan_tci_to_pcp(ovs_be16 vlan_tci
)
498 return (ntohs(vlan_tci
) & VLAN_PCP_MASK
) >> VLAN_PCP_SHIFT
;
501 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
502 * returns the Canonical Format Indicator (CFI). */
504 vlan_tci_to_cfi(ovs_be16 vlan_tci
)
506 return (vlan_tci
& htons(VLAN_CFI
)) != 0;
509 #define VLAN_HEADER_LEN 4
511 ovs_be16 vlan_tci
; /* Lowest 12 bits are VLAN ID. */
512 ovs_be16 vlan_next_type
;
514 BUILD_ASSERT_DECL(VLAN_HEADER_LEN
== sizeof(struct vlan_header
));
516 #define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN)
517 struct vlan_eth_header
{
518 struct eth_addr veth_dst
;
519 struct eth_addr veth_src
;
520 ovs_be16 veth_type
; /* Always htons(ETH_TYPE_VLAN). */
521 ovs_be16 veth_tci
; /* Lowest 12 bits are VLAN ID. */
522 ovs_be16 veth_next_type
;
524 BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN
== sizeof(struct vlan_eth_header
));
526 /* MPLS related definitions */
527 #define MPLS_TTL_MASK 0x000000ff
528 #define MPLS_TTL_SHIFT 0
530 #define MPLS_BOS_MASK 0x00000100
531 #define MPLS_BOS_SHIFT 8
533 #define MPLS_TC_MASK 0x00000e00
534 #define MPLS_TC_SHIFT 9
536 #define MPLS_LABEL_MASK 0xfffff000
537 #define MPLS_LABEL_SHIFT 12
542 ovs_16aligned_be32 mpls_lse
;
544 BUILD_ASSERT_DECL(MPLS_HLEN
== sizeof(struct mpls_hdr
));
546 /* Given a mpls label stack entry in network byte order
547 * return mpls label in host byte order */
548 static inline uint32_t
549 mpls_lse_to_label(ovs_be32 mpls_lse
)
551 return (ntohl(mpls_lse
) & MPLS_LABEL_MASK
) >> MPLS_LABEL_SHIFT
;
554 /* Given a mpls label stack entry in network byte order
556 static inline uint8_t
557 mpls_lse_to_tc(ovs_be32 mpls_lse
)
559 return (ntohl(mpls_lse
) & MPLS_TC_MASK
) >> MPLS_TC_SHIFT
;
562 /* Given a mpls label stack entry in network byte order
564 static inline uint8_t
565 mpls_lse_to_ttl(ovs_be32 mpls_lse
)
567 return (ntohl(mpls_lse
) & MPLS_TTL_MASK
) >> MPLS_TTL_SHIFT
;
570 /* Set TTL in mpls lse. */
572 flow_set_mpls_lse_ttl(ovs_be32
*mpls_lse
, uint8_t ttl
)
574 *mpls_lse
&= ~htonl(MPLS_TTL_MASK
);
575 *mpls_lse
|= htonl(ttl
<< MPLS_TTL_SHIFT
);
578 /* Given a mpls label stack entry in network byte order
579 * return mpls BoS bit */
580 static inline uint8_t
581 mpls_lse_to_bos(ovs_be32 mpls_lse
)
583 return (mpls_lse
& htonl(MPLS_BOS_MASK
)) != 0;
586 #define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32
587 #define IP_ARGS(ip) \
589 (ntohl(ip) >> 16) & 0xff, \
590 (ntohl(ip) >> 8) & 0xff, \
595 * char *string = "1 33.44.55.66 2";
599 * if (ovs_scan(string, "%d"IP_SCAN_FMT"%d", &a, IP_SCAN_ARGS(&ip), &b)) {
603 #define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8
604 #define IP_SCAN_ARGS(ip) \
605 ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \
606 &((uint8_t *) ip)[1], \
607 &((uint8_t *) ip)[2], \
610 #define IP_PORT_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8":%"SCNu16
611 #define IP_PORT_SCAN_ARGS(ip, port) \
612 ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \
613 &((uint8_t *) ip)[1], \
614 &((uint8_t *) ip)[2], \
615 &((uint8_t *) ip)[3], \
616 ((void) (ovs_be16) *(port), (uint16_t *) port)
618 /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N
619 * high-order 1-bits and 32-N low-order 0-bits. */
621 ip_is_cidr(ovs_be32 netmask
)
623 uint32_t x
= ~ntohl(netmask
);
624 return !(x
& (x
+ 1));
627 ip_is_multicast(ovs_be32 ip
)
629 return (ip
& htonl(0xf0000000)) == htonl(0xe0000000);
632 ip_is_local_multicast(ovs_be32 ip
)
634 return (ip
& htonl(0xffffff00)) == htonl(0xe0000000);
636 int ip_count_cidr_bits(ovs_be32 netmask
);
637 void ip_format_masked(ovs_be32 ip
, ovs_be32 mask
, struct ds
*);
638 bool ip_parse(const char *s
, ovs_be32
*ip
);
639 char *ip_parse_port(const char *s
, ovs_be32
*ip
, ovs_be16
*port
)
640 OVS_WARN_UNUSED_RESULT
;
641 char *ip_parse_masked(const char *s
, ovs_be32
*ip
, ovs_be32
*mask
)
642 OVS_WARN_UNUSED_RESULT
;
643 char *ip_parse_cidr(const char *s
, ovs_be32
*ip
, unsigned int *plen
)
644 OVS_WARN_UNUSED_RESULT
;
645 char *ip_parse_masked_len(const char *s
, int *n
, ovs_be32
*ip
, ovs_be32
*mask
)
646 OVS_WARN_UNUSED_RESULT
;
647 char *ip_parse_cidr_len(const char *s
, int *n
, ovs_be32
*ip
,
649 OVS_WARN_UNUSED_RESULT
;
651 #define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4)
652 #define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15)
653 #define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl))
656 #define IPPROTO_SCTP 132
660 #define IPPROTO_DCCP 33
664 #define IPPROTO_IGMP 2
667 #ifndef IPPROTO_UDPLITE
668 #define IPPROTO_UDPLITE 136
672 #define IP_ECN_NOT_ECT 0x0
673 #define IP_ECN_ECT_1 0x01
674 #define IP_ECN_ECT_0 0x02
675 #define IP_ECN_CE 0x03
676 #define IP_ECN_MASK 0x03
677 #define IP_DSCP_MASK 0xfc
680 IP_ECN_is_ce(uint8_t dsfield
)
682 return (dsfield
& IP_ECN_MASK
) == IP_ECN_CE
;
687 #define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */
688 #define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */
689 #define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */
690 #define IP_IS_FRAGMENT(ip_frag_off) \
691 ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK))
693 #define IP_HEADER_LEN 20
699 ovs_be16 ip_frag_off
;
703 ovs_16aligned_be32 ip_src
;
704 ovs_16aligned_be32 ip_dst
;
706 BUILD_ASSERT_DECL(IP_HEADER_LEN
== sizeof(struct ip_header
));
709 #define ICMP4_ECHO_REPLY 0
710 #define ICMP4_DST_UNREACH 3
711 #define ICMP4_SOURCEQUENCH 4
712 #define ICMP4_REDIRECT 5
713 #define ICMP4_ECHO_REQUEST 8
714 #define ICMP4_TIME_EXCEEDED 11
715 #define ICMP4_PARAM_PROB 12
716 #define ICMP4_TIMESTAMP 13
717 #define ICMP4_TIMESTAMPREPLY 14
718 #define ICMP4_INFOREQUEST 15
719 #define ICMP4_INFOREPLY 16
721 #define ICMP_HEADER_LEN 8
735 ovs_16aligned_be32 gateway
;
738 BUILD_ASSERT_DECL(ICMP_HEADER_LEN
== sizeof(struct icmp_header
));
740 #define IGMP_HEADER_LEN 8
745 ovs_16aligned_be32 group
;
747 BUILD_ASSERT_DECL(IGMP_HEADER_LEN
== sizeof(struct igmp_header
));
749 #define IGMPV3_HEADER_LEN 8
750 struct igmpv3_header
{
757 BUILD_ASSERT_DECL(IGMPV3_HEADER_LEN
== sizeof(struct igmpv3_header
));
759 #define IGMPV3_RECORD_LEN 8
760 struct igmpv3_record
{
764 ovs_16aligned_be32 maddr
;
766 BUILD_ASSERT_DECL(IGMPV3_RECORD_LEN
== sizeof(struct igmpv3_record
));
768 #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */
769 #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */
770 #define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x12 */
771 #define IGMP_HOST_LEAVE_MESSAGE 0x17
772 #define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x12 */
775 * IGMPv3 and MLDv2 use the same codes.
777 #define IGMPV3_MODE_IS_INCLUDE 1
778 #define IGMPV3_MODE_IS_EXCLUDE 2
779 #define IGMPV3_CHANGE_TO_INCLUDE_MODE 3
780 #define IGMPV3_CHANGE_TO_EXCLUDE_MODE 4
781 #define IGMPV3_ALLOW_NEW_SOURCES 5
782 #define IGMPV3_BLOCK_OLD_SOURCES 6
784 #define SCTP_HEADER_LEN 12
788 ovs_16aligned_be32 sctp_vtag
;
789 ovs_16aligned_be32 sctp_csum
;
791 BUILD_ASSERT_DECL(SCTP_HEADER_LEN
== sizeof(struct sctp_header
));
793 #define UDP_HEADER_LEN 8
800 BUILD_ASSERT_DECL(UDP_HEADER_LEN
== sizeof(struct udp_header
));
802 #define TCP_FIN 0x001
803 #define TCP_SYN 0x002
804 #define TCP_RST 0x004
805 #define TCP_PSH 0x008
806 #define TCP_ACK 0x010
807 #define TCP_URG 0x020
808 #define TCP_ECE 0x040
809 #define TCP_CWR 0x080
812 #define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12)))
813 #define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff)
814 #define TCP_FLAGS_BE16(tcp_ctl) ((tcp_ctl) & htons(0x0fff))
815 #define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12)
817 #define TCP_HEADER_LEN 20
821 ovs_16aligned_be32 tcp_seq
;
822 ovs_16aligned_be32 tcp_ack
;
828 BUILD_ASSERT_DECL(TCP_HEADER_LEN
== sizeof(struct tcp_header
));
830 /* Connection states.
832 * Names like CS_RELATED are bit values, e.g. 1 << 2.
833 * Names like CS_RELATED_BIT are bit indexes, e.g. 2. */
835 CS_STATE(NEW, 0, "new") \
836 CS_STATE(ESTABLISHED, 1, "est") \
837 CS_STATE(RELATED, 2, "rel") \
838 CS_STATE(REPLY_DIR, 3, "rpl") \
839 CS_STATE(INVALID, 4, "inv") \
840 CS_STATE(TRACKED, 5, "trk") \
841 CS_STATE(SRC_NAT, 6, "snat") \
842 CS_STATE(DST_NAT, 7, "dnat")
845 #define CS_STATE(ENUM, INDEX, NAME) \
846 CS_##ENUM = 1 << INDEX, \
847 CS_##ENUM##_BIT = INDEX,
852 /* Undefined connection state bits. */
854 #define CS_STATE(ENUM, INDEX, NAME) +CS_##ENUM
855 CS_SUPPORTED_MASK
= CS_STATES
858 #define CS_UNSUPPORTED_MASK (~(uint32_t)CS_SUPPORTED_MASK)
860 #define ARP_HRD_ETHERNET 1
861 #define ARP_PRO_IP 0x0800
862 #define ARP_OP_REQUEST 1
863 #define ARP_OP_REPLY 2
864 #define ARP_OP_RARP 3
866 #define ARP_ETH_HEADER_LEN 28
867 struct arp_eth_header
{
868 /* Generic members. */
869 ovs_be16 ar_hrd
; /* Hardware type. */
870 ovs_be16 ar_pro
; /* Protocol type. */
871 uint8_t ar_hln
; /* Hardware address length. */
872 uint8_t ar_pln
; /* Protocol address length. */
873 ovs_be16 ar_op
; /* Opcode. */
875 /* Ethernet+IPv4 specific members. */
876 struct eth_addr ar_sha
; /* Sender hardware address. */
877 ovs_16aligned_be32 ar_spa
; /* Sender protocol address. */
878 struct eth_addr ar_tha
; /* Target hardware address. */
879 ovs_16aligned_be32 ar_tpa
; /* Target protocol address. */
881 BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN
== sizeof(struct arp_eth_header
));
883 #define IPV6_HEADER_LEN 40
885 /* Like struct in6_addr, but whereas that struct requires 32-bit alignment on
886 * most implementations, this one only requires 16-bit alignment. */
887 union ovs_16aligned_in6_addr
{
889 ovs_16aligned_be32 be32
[4];
892 /* Like struct in6_hdr, but whereas that struct requires 32-bit alignment, this
893 * one only requires 16-bit alignment. */
894 struct ovs_16aligned_ip6_hdr
{
896 struct ovs_16aligned_ip6_hdrctl
{
897 ovs_16aligned_be32 ip6_un1_flow
;
898 ovs_be16 ip6_un1_plen
;
900 uint8_t ip6_un1_hlim
;
904 union ovs_16aligned_in6_addr ip6_src
;
905 union ovs_16aligned_in6_addr ip6_dst
;
908 /* Like struct in6_frag, but whereas that struct requires 32-bit alignment,
909 * this one only requires 16-bit alignment. */
910 struct ovs_16aligned_ip6_frag
{
912 uint8_t ip6f_reserved
;
914 ovs_16aligned_be32 ip6f_ident
;
917 #define ICMP6_HEADER_LEN 4
918 struct icmp6_header
{
921 ovs_be16 icmp6_cksum
;
923 BUILD_ASSERT_DECL(ICMP6_HEADER_LEN
== sizeof(struct icmp6_header
));
925 #define ICMP6_ERROR_HEADER_LEN 8
926 struct icmp6_error_header
{
927 struct icmp6_header icmp6_base
;
928 ovs_be32 icmp6_error_ext
;
930 BUILD_ASSERT_DECL(ICMP6_ERROR_HEADER_LEN
== sizeof(struct icmp6_error_header
));
932 uint32_t packet_csum_pseudoheader6(const struct ovs_16aligned_ip6_hdr
*);
933 uint16_t packet_csum_upperlayer6(const struct ovs_16aligned_ip6_hdr
*,
934 const void *, uint8_t, uint16_t);
936 /* Neighbor Discovery option field.
937 * ND options are always a multiple of 8 bytes in size. */
938 #define ND_LLA_OPT_LEN 8
939 struct ovs_nd_lla_opt
{
940 uint8_t type
; /* One of ND_OPT_*_LINKADDR. */
944 BUILD_ASSERT_DECL(ND_LLA_OPT_LEN
== sizeof(struct ovs_nd_lla_opt
));
946 /* Neighbor Discovery option: Prefix Information. */
947 #define ND_PREFIX_OPT_LEN 32
948 struct ovs_nd_prefix_opt
{
949 uint8_t type
; /* ND_OPT_PREFIX_INFORMATION. */
950 uint8_t len
; /* Always 4. */
952 uint8_t la_flags
; /* ND_PREFIX_* flags. */
953 ovs_16aligned_be32 valid_lifetime
;
954 ovs_16aligned_be32 preferred_lifetime
;
955 ovs_16aligned_be32 reserved
; /* Always 0. */
956 union ovs_16aligned_in6_addr prefix
;
958 BUILD_ASSERT_DECL(ND_PREFIX_OPT_LEN
== sizeof(struct ovs_nd_prefix_opt
));
960 #define ND_PREFIX_ON_LINK 0x80
961 #define ND_PREFIX_AUTONOMOUS_ADDRESS 0x40
963 /* Neighbor Discovery option: MTU. */
964 #define ND_MTU_OPT_LEN 8
965 struct ovs_nd_mtu_opt
{
966 uint8_t type
; /* ND_OPT_MTU */
967 uint8_t len
; /* Always 1. */
968 ovs_be16 reserved
; /* Always 0. */
969 ovs_16aligned_be32 mtu
;
971 BUILD_ASSERT_DECL(ND_MTU_OPT_LEN
== sizeof(struct ovs_nd_mtu_opt
));
973 /* Like struct nd_msg (from ndisc.h), but whereas that struct requires 32-bit
974 * alignment, this one only requires 16-bit alignment. */
975 #define ND_MSG_LEN 24
977 struct icmp6_header icmph
;
978 ovs_16aligned_be32 rso_flags
;
979 union ovs_16aligned_in6_addr target
;
980 struct ovs_nd_lla_opt options
[0];
982 BUILD_ASSERT_DECL(ND_MSG_LEN
== sizeof(struct ovs_nd_msg
));
984 /* Neighbor Discovery packet flags. */
985 #define ND_RSO_ROUTER 0x80000000
986 #define ND_RSO_SOLICITED 0x40000000
987 #define ND_RSO_OVERRIDE 0x20000000
989 #define RA_MSG_LEN 16
991 struct icmp6_header icmph
;
992 uint8_t cur_hop_limit
;
993 uint8_t mo_flags
; /* ND_RA_MANAGED_ADDRESS and ND_RA_OTHER_CONFIG flags. */
994 ovs_be16 router_lifetime
;
995 ovs_be32 reachable_time
;
996 ovs_be32 retrans_timer
;
997 struct ovs_nd_lla_opt options
[0];
999 BUILD_ASSERT_DECL(RA_MSG_LEN
== sizeof(struct ovs_ra_msg
));
1001 #define ND_RA_MANAGED_ADDRESS 0x80
1002 #define ND_RA_OTHER_CONFIG 0x40
1005 * Use the same struct for MLD and MLD2, naming members as the defined fields in
1006 * in the corresponding version of the protocol, though they are reserved in the
1009 #define MLD_HEADER_LEN 8
1017 BUILD_ASSERT_DECL(MLD_HEADER_LEN
== sizeof(struct mld_header
));
1019 #define MLD2_RECORD_LEN 20
1020 struct mld2_record
{
1024 union ovs_16aligned_in6_addr maddr
;
1026 BUILD_ASSERT_DECL(MLD2_RECORD_LEN
== sizeof(struct mld2_record
));
1028 #define MLD_QUERY 130
1029 #define MLD_REPORT 131
1030 #define MLD_DONE 132
1031 #define MLD2_REPORT 143
1033 /* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */
1034 #define IPV6_LABEL_MASK 0x000fffff
1038 * char *string = "1 ::1 2";
1039 * char ipv6_s[IPV6_SCAN_LEN + 1];
1040 * struct in6_addr ipv6;
1042 * if (ovs_scan(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b)
1043 * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
1047 #define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]"
1048 #define IPV6_SCAN_LEN 46
1050 extern const struct in6_addr in6addr_exact
;
1051 #define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
1052 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } }
1054 extern const struct in6_addr in6addr_all_hosts
;
1055 #define IN6ADDR_ALL_HOSTS_INIT { { { 0xff,0x02,0x00,0x00,0x00,0x00,0x00,0x00, \
1056 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01 } } }
1058 extern const struct in6_addr in6addr_all_routers
;
1059 #define IN6ADDR_ALL_ROUTERS_INIT { { { 0xff,0x02,0x00,0x00,0x00,0x00,0x00,0x00, \
1060 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02 } } }
1062 static inline bool ipv6_addr_equals(const struct in6_addr
*a
,
1063 const struct in6_addr
*b
)
1065 #ifdef IN6_ARE_ADDR_EQUAL
1066 return IN6_ARE_ADDR_EQUAL(a
, b
);
1068 return !memcmp(a
, b
, sizeof(*a
));
1072 /* Checks the IPv6 address in 'mask' for all zeroes. */
1073 static inline bool ipv6_mask_is_any(const struct in6_addr
*mask
) {
1074 return ipv6_addr_equals(mask
, &in6addr_any
);
1077 static inline bool ipv6_mask_is_exact(const struct in6_addr
*mask
) {
1078 return ipv6_addr_equals(mask
, &in6addr_exact
);
1081 static inline bool ipv6_is_all_hosts(const struct in6_addr
*addr
) {
1082 return ipv6_addr_equals(addr
, &in6addr_all_hosts
);
1085 static inline bool ipv6_addr_is_set(const struct in6_addr
*addr
) {
1086 return !ipv6_addr_equals(addr
, &in6addr_any
);
1089 static inline bool ipv6_addr_is_multicast(const struct in6_addr
*ip
) {
1090 return ip
->s6_addr
[0] == 0xff;
1093 static inline struct in6_addr
1094 in6_addr_mapped_ipv4(ovs_be32 ip4
)
1096 struct in6_addr ip6
= { .s6_addr
= { [10] = 0xff, [11] = 0xff } };
1097 memcpy(&ip6
.s6_addr
[12], &ip4
, 4);
1102 in6_addr_set_mapped_ipv4(struct in6_addr
*ip6
, ovs_be32 ip4
)
1104 *ip6
= in6_addr_mapped_ipv4(ip4
);
1107 static inline ovs_be32
1108 in6_addr_get_mapped_ipv4(const struct in6_addr
*addr
)
1110 union ovs_16aligned_in6_addr
*taddr
= (void *) addr
;
1111 if (IN6_IS_ADDR_V4MAPPED(addr
)) {
1112 return get_16aligned_be32(&taddr
->be32
[3]);
1119 in6_addr_solicited_node(struct in6_addr
*addr
, const struct in6_addr
*ip6
)
1121 union ovs_16aligned_in6_addr
*taddr
= (void *) addr
;
1122 memset(taddr
->be16
, 0, sizeof(taddr
->be16
));
1123 taddr
->be16
[0] = htons(0xff02);
1124 taddr
->be16
[5] = htons(0x1);
1125 taddr
->be16
[6] = htons(0xff00);
1126 memcpy(&addr
->s6_addr
[13], &ip6
->s6_addr
[13], 3);
1130 * Generates ipv6 EUI64 address from the given eth addr
1131 * and prefix and stores it in 'lla'
1134 in6_generate_eui64(struct eth_addr ea
, struct in6_addr
*prefix
,
1135 struct in6_addr
*lla
)
1137 union ovs_16aligned_in6_addr
*taddr
= (void *) lla
;
1138 union ovs_16aligned_in6_addr
*prefix_taddr
= (void *) prefix
;
1139 taddr
->be16
[0] = prefix_taddr
->be16
[0];
1140 taddr
->be16
[1] = prefix_taddr
->be16
[1];
1141 taddr
->be16
[2] = prefix_taddr
->be16
[2];
1142 taddr
->be16
[3] = prefix_taddr
->be16
[3];
1143 taddr
->be16
[4] = htons(((ea
.ea
[0] ^ 0x02) << 8) | ea
.ea
[1]);
1144 taddr
->be16
[5] = htons(ea
.ea
[2] << 8 | 0x00ff);
1145 taddr
->be16
[6] = htons(0xfe << 8 | ea
.ea
[3]);
1146 taddr
->be16
[7] = ea
.be16
[2];
1150 * Generates ipv6 link local address from the given eth addr
1151 * with prefix 'fe80::/64' and stores it in 'lla'
1154 in6_generate_lla(struct eth_addr ea
, struct in6_addr
*lla
)
1156 union ovs_16aligned_in6_addr
*taddr
= (void *) lla
;
1157 memset(taddr
->be16
, 0, sizeof(taddr
->be16
));
1158 taddr
->be16
[0] = htons(0xfe80);
1159 taddr
->be16
[4] = htons(((ea
.ea
[0] ^ 0x02) << 8) | ea
.ea
[1]);
1160 taddr
->be16
[5] = htons(ea
.ea
[2] << 8 | 0x00ff);
1161 taddr
->be16
[6] = htons(0xfe << 8 | ea
.ea
[3]);
1162 taddr
->be16
[7] = ea
.be16
[2];
1165 /* Returns true if 'addr' is a link local address. Otherwise, false. */
1167 in6_is_lla(struct in6_addr
*addr
)
1170 return addr
->s6_addr32
[0] == htonl(0xfe800000) && !(addr
->s6_addr32
[1]);
1172 return addr
->s6_addr
[0] == 0xfe && addr
->s6_addr
[1] == 0x80 &&
1173 !(addr
->s6_addr
[2] | addr
->s6_addr
[3] | addr
->s6_addr
[4] |
1174 addr
->s6_addr
[5] | addr
->s6_addr
[6] | addr
->s6_addr
[7]);
1179 ipv6_multicast_to_ethernet(struct eth_addr
*eth
, const struct in6_addr
*ip6
)
1183 eth
->ea
[2] = ip6
->s6_addr
[12];
1184 eth
->ea
[3] = ip6
->s6_addr
[13];
1185 eth
->ea
[4] = ip6
->s6_addr
[14];
1186 eth
->ea
[5] = ip6
->s6_addr
[15];
1189 static inline bool dl_type_is_ip_any(ovs_be16 dl_type
)
1191 return dl_type
== htons(ETH_TYPE_IP
)
1192 || dl_type
== htons(ETH_TYPE_IPV6
);
1197 /* GRE protocol header */
1198 struct gre_base_hdr
{
1203 #define GRE_CSUM 0x8000
1204 #define GRE_ROUTING 0x4000
1205 #define GRE_KEY 0x2000
1206 #define GRE_SEQ 0x1000
1207 #define GRE_STRICT 0x0800
1208 #define GRE_REC 0x0700
1209 #define GRE_FLAGS 0x00F8
1210 #define GRE_VERSION 0x0007
1212 /* VXLAN protocol header */
1215 ovs_16aligned_be32 vx_flags
; /* VXLAN flags. */
1217 uint8_t flags
; /* VXLAN GPE flags. */
1218 uint8_t reserved
[2]; /* 16 bits reserved. */
1219 uint8_t next_protocol
; /* Next Protocol field for VXLAN GPE. */
1222 ovs_16aligned_be32 vx_vni
;
1224 BUILD_ASSERT_DECL(sizeof(struct vxlanhdr
) == 8);
1226 #define VXLAN_FLAGS 0x08000000 /* struct vxlanhdr.vx_flags required value. */
1229 * VXLAN Generic Protocol Extension (VXLAN_F_GPE):
1230 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1231 * |R|R|Ver|I|P|R|O| Reserved |Next Protocol |
1232 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1233 * | VXLAN Network Identifier (VNI) | Reserved |
1234 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1236 * Ver = Version. Indicates VXLAN GPE protocol version.
1238 * P = Next Protocol Bit. The P bit is set to indicate that the
1239 * Next Protocol field is present.
1241 * O = OAM Flag Bit. The O bit is set to indicate that the packet
1244 * Next Protocol = This 8 bit field indicates the protocol header
1245 * immediately following the VXLAN GPE header.
1247 * https://tools.ietf.org/html/draft-ietf-nvo3-vxlan-gpe-01
1250 /* Fields in struct vxlanhdr.vx_gpe.flags */
1251 #define VXLAN_GPE_FLAGS_VER 0x30 /* Version. */
1252 #define VLXAN_GPE_FLAGS_P 0x04 /* Next Protocol Bit. */
1253 #define VXLAN_GPE_FLAGS_O 0x01 /* OAM Bit. */
1255 /* VXLAN-GPE header flags. */
1256 #define VXLAN_HF_VER ((1U <<29) | (1U <<28))
1257 #define VXLAN_HF_NP (1U <<26)
1258 #define VXLAN_HF_OAM (1U <<24)
1260 #define VXLAN_GPE_USED_BITS (VXLAN_HF_VER | VXLAN_HF_NP | VXLAN_HF_OAM | \
1263 /* VXLAN-GPE header Next Protocol. */
1264 #define VXLAN_GPE_NP_IPV4 0x01
1265 #define VXLAN_GPE_NP_IPV6 0x02
1266 #define VXLAN_GPE_NP_ETHERNET 0x03
1267 #define VXLAN_GPE_NP_NSH 0x04
1269 #define VXLAN_F_GPE 0x4000
1270 #define VXLAN_HF_GPE 0x04000000
1272 /* Input values for PACKET_TYPE macros have to be in host byte order.
1273 * The _BE postfix indicates result is in network byte order. Otherwise result
1274 * is in host byte order. */
1275 #define PACKET_TYPE(NS, NS_TYPE) ((uint32_t) ((NS) << 16 | (NS_TYPE)))
1276 #define PACKET_TYPE_BE(NS, NS_TYPE) (htonl((NS) << 16 | (NS_TYPE)))
1278 /* Returns the host byte ordered namespace of 'packet type'. */
1279 static inline uint16_t
1280 pt_ns(ovs_be32 packet_type
)
1282 return ntohl(packet_type
) >> 16;
1285 /* Returns the network byte ordered namespace type of 'packet type'. */
1286 static inline ovs_be16
1287 pt_ns_type_be(ovs_be32 packet_type
)
1289 return be32_to_be16(packet_type
);
1292 /* Returns the host byte ordered namespace type of 'packet type'. */
1293 static inline uint16_t
1294 pt_ns_type(ovs_be32 packet_type
)
1296 return ntohs(pt_ns_type_be(packet_type
));
1299 /* Well-known packet_type field values. */
1301 PT_ETH
= PACKET_TYPE(OFPHTN_ONF
, 0x0000), /* Default PT: Ethernet */
1302 PT_USE_NEXT_PROTO
= PACKET_TYPE(OFPHTN_ONF
, 0xfffe), /* Pseudo PT for decap. */
1303 PT_IPV4
= PACKET_TYPE(OFPHTN_ETHERTYPE
, ETH_TYPE_IP
),
1304 PT_IPV6
= PACKET_TYPE(OFPHTN_ETHERTYPE
, ETH_TYPE_IPV6
),
1305 PT_MPLS
= PACKET_TYPE(OFPHTN_ETHERTYPE
, ETH_TYPE_MPLS
),
1306 PT_MPLS_MC
= PACKET_TYPE(OFPHTN_ETHERTYPE
, ETH_TYPE_MPLS_MCAST
),
1307 PT_NSH
= PACKET_TYPE(OFPHTN_ETHERTYPE
, ETH_TYPE_NSH
),
1308 PT_UNKNOWN
= PACKET_TYPE(0xffff, 0xffff), /* Unknown packet type. */
1312 void ipv6_format_addr(const struct in6_addr
*addr
, struct ds
*);
1313 void ipv6_format_addr_bracket(const struct in6_addr
*addr
, struct ds
*,
1315 void ipv6_format_mapped(const struct in6_addr
*addr
, struct ds
*);
1316 void ipv6_format_masked(const struct in6_addr
*addr
,
1317 const struct in6_addr
*mask
, struct ds
*);
1318 const char * ipv6_string_mapped(char *addr_str
, const struct in6_addr
*addr
);
1319 struct in6_addr
ipv6_addr_bitand(const struct in6_addr
*src
,
1320 const struct in6_addr
*mask
);
1321 struct in6_addr
ipv6_addr_bitxor(const struct in6_addr
*a
,
1322 const struct in6_addr
*b
);
1323 bool ipv6_is_zero(const struct in6_addr
*a
);
1324 struct in6_addr
ipv6_create_mask(int mask
);
1325 int ipv6_count_cidr_bits(const struct in6_addr
*netmask
);
1326 bool ipv6_is_cidr(const struct in6_addr
*netmask
);
1328 bool ipv6_parse(const char *s
, struct in6_addr
*ip
);
1329 char *ipv6_parse_masked(const char *s
, struct in6_addr
*ipv6
,
1330 struct in6_addr
*mask
);
1331 char *ipv6_parse_cidr(const char *s
, struct in6_addr
*ip
, unsigned int *plen
)
1332 OVS_WARN_UNUSED_RESULT
;
1333 char *ipv6_parse_masked_len(const char *s
, int *n
, struct in6_addr
*ipv6
,
1334 struct in6_addr
*mask
);
1335 char *ipv6_parse_cidr_len(const char *s
, int *n
, struct in6_addr
*ip
,
1337 OVS_WARN_UNUSED_RESULT
;
1339 void *eth_compose(struct dp_packet
*, const struct eth_addr eth_dst
,
1340 const struct eth_addr eth_src
, uint16_t eth_type
,
1342 void *snap_compose(struct dp_packet
*, const struct eth_addr eth_dst
,
1343 const struct eth_addr eth_src
,
1344 unsigned int oui
, uint16_t snap_type
, size_t size
);
1345 void packet_set_ipv4(struct dp_packet
*, ovs_be32 src
, ovs_be32 dst
, uint8_t tos
,
1347 void packet_set_ipv4_addr(struct dp_packet
*packet
, ovs_16aligned_be32
*addr
,
1349 void packet_set_ipv6(struct dp_packet
*, const struct in6_addr
*src
,
1350 const struct in6_addr
*dst
, uint8_t tc
,
1351 ovs_be32 fl
, uint8_t hlmit
);
1352 void packet_set_ipv6_addr(struct dp_packet
*packet
, uint8_t proto
,
1353 ovs_16aligned_be32 addr
[4],
1354 const struct in6_addr
*new_addr
,
1355 bool recalculate_csum
);
1356 void packet_set_tcp_port(struct dp_packet
*, ovs_be16 src
, ovs_be16 dst
);
1357 void packet_set_udp_port(struct dp_packet
*, ovs_be16 src
, ovs_be16 dst
);
1358 void packet_set_sctp_port(struct dp_packet
*, ovs_be16 src
, ovs_be16 dst
);
1359 void packet_set_icmp(struct dp_packet
*, uint8_t type
, uint8_t code
);
1360 void packet_set_nd(struct dp_packet
*, const struct in6_addr
*target
,
1361 const struct eth_addr sll
, const struct eth_addr tll
);
1363 void packet_format_tcp_flags(struct ds
*, uint16_t);
1364 const char *packet_tcp_flag_to_string(uint32_t flag
);
1365 void compose_arp__(struct dp_packet
*);
1366 void compose_arp(struct dp_packet
*, uint16_t arp_op
,
1367 const struct eth_addr arp_sha
,
1368 const struct eth_addr arp_tha
, bool broadcast
,
1369 ovs_be32 arp_spa
, ovs_be32 arp_tpa
);
1370 void compose_nd_ns(struct dp_packet
*, const struct eth_addr eth_src
,
1371 const struct in6_addr
*ipv6_src
,
1372 const struct in6_addr
*ipv6_dst
);
1373 void compose_nd_na(struct dp_packet
*, const struct eth_addr eth_src
,
1374 const struct eth_addr eth_dst
,
1375 const struct in6_addr
*ipv6_src
,
1376 const struct in6_addr
*ipv6_dst
,
1377 ovs_be32 rso_flags
);
1378 void compose_nd_ra(struct dp_packet
*,
1379 const struct eth_addr eth_src
,
1380 const struct eth_addr eth_dst
,
1381 const struct in6_addr
*ipv6_src
,
1382 const struct in6_addr
*ipv6_dst
,
1383 uint8_t cur_hop_limit
, uint8_t mo_flags
,
1384 ovs_be16 router_lt
, ovs_be32 reachable_time
,
1385 ovs_be32 retrans_timer
, ovs_be32 mtu
);
1386 void packet_put_ra_prefix_opt(struct dp_packet
*,
1387 uint8_t plen
, uint8_t la_flags
,
1388 ovs_be32 valid_lifetime
,
1389 ovs_be32 preferred_lifetime
,
1390 const ovs_be128 router_prefix
);
1391 uint32_t packet_csum_pseudoheader(const struct ip_header
*);
1392 void IP_ECN_set_ce(struct dp_packet
*pkt
, bool is_ipv6
);
1394 #define DNS_HEADER_LEN 12
1397 uint8_t lo_flag
; /* QR (1), OPCODE (4), AA (1), TC (1) and RD (1) */
1398 uint8_t hi_flag
; /* RA (1), Z (3) and RCODE (4) */
1399 ovs_be16 qdcount
; /* Num of entries in the question section. */
1400 ovs_be16 ancount
; /* Num of resource records in the answer section. */
1402 /* Num of name server records in the authority record section. */
1405 /* Num of resource records in the additional records section. */
1409 BUILD_ASSERT_DECL(DNS_HEADER_LEN
== sizeof(struct dns_header
));
1411 #define DNS_QUERY_TYPE_A 0x01
1412 #define DNS_QUERY_TYPE_AAAA 0x1c
1413 #define DNS_QUERY_TYPE_ANY 0xff
1415 #define DNS_CLASS_IN 0x01
1416 #define DNS_DEFAULT_RR_TTL 3600
1418 #endif /* packets.h */