2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 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>
22 #include <netinet/in.h>
26 #include "openvswitch/types.h"
34 /* Tunnel information used in flow key and metadata. */
46 /* Unfortunately, a "struct flow" sometimes has to handle OpenFlow port
47 * numbers and other times datapath (dpif) port numbers. This union allows
54 /* Datapath packet metadata */
56 uint32_t recirc_id; /* Recirculation id carried with the
57 recirculating packets. 0 for packets
58 received from the wire. */
59 uint32_t dp_hash; /* hash value computed by the recirculation
61 struct flow_tnl tunnel; /* Encapsulating tunnel parameters. */
62 uint32_t skb_priority; /* Packet priority for QoS. */
63 uint32_t pkt_mark; /* Packet mark. */
64 union flow_in_port in_port; /* Input port. */
67 #define PKT_METADATA_INITIALIZER(PORT) \
68 (struct pkt_metadata){ .in_port.odp_port = PORT }
70 bool dpid_from_string(const char *s, uint64_t *dpidp);
72 #define ETH_ADDR_LEN 6
74 static const uint8_t eth_addr_broadcast[ETH_ADDR_LEN] OVS_UNUSED
75 = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
77 static const uint8_t eth_addr_stp[ETH_ADDR_LEN] OVS_UNUSED
78 = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00 };
80 static const uint8_t eth_addr_lacp[ETH_ADDR_LEN] OVS_UNUSED
81 = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 };
83 static const uint8_t eth_addr_bfd[ETH_ADDR_LEN] OVS_UNUSED
84 = { 0x00, 0x23, 0x20, 0x00, 0x00, 0x01 };
86 static inline bool eth_addr_is_broadcast(const uint8_t ea[ETH_ADDR_LEN])
88 return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
91 static inline bool eth_addr_is_multicast(const uint8_t ea[ETH_ADDR_LEN])
95 static inline bool eth_addr_is_local(const uint8_t ea[ETH_ADDR_LEN])
97 /* Local if it is either a locally administered address or a Nicira random
100 || (ea[0] == 0x00 && ea[1] == 0x23 && ea[2] == 0x20 && ea[3] & 0x80);
102 static inline bool eth_addr_is_zero(const uint8_t ea[ETH_ADDR_LEN])
104 return !(ea[0] | ea[1] | ea[2] | ea[3] | ea[4] | ea[5]);
107 static inline int eth_mask_is_exact(const uint8_t ea[ETH_ADDR_LEN])
109 return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
112 static inline int eth_addr_compare_3way(const uint8_t a[ETH_ADDR_LEN],
113 const uint8_t b[ETH_ADDR_LEN])
115 return memcmp(a, b, ETH_ADDR_LEN);
117 static inline bool eth_addr_equals(const uint8_t a[ETH_ADDR_LEN],
118 const uint8_t b[ETH_ADDR_LEN])
120 return !eth_addr_compare_3way(a, b);
122 static inline bool eth_addr_equal_except(const uint8_t a[ETH_ADDR_LEN],
123 const uint8_t b[ETH_ADDR_LEN],
124 const uint8_t mask[ETH_ADDR_LEN])
126 return !(((a[0] ^ b[0]) & mask[0])
127 || ((a[1] ^ b[1]) & mask[1])
128 || ((a[2] ^ b[2]) & mask[2])
129 || ((a[3] ^ b[3]) & mask[3])
130 || ((a[4] ^ b[4]) & mask[4])
131 || ((a[5] ^ b[5]) & mask[5]));
133 static inline uint64_t eth_addr_to_uint64(const uint8_t ea[ETH_ADDR_LEN])
135 return (((uint64_t) ea[0] << 40)
136 | ((uint64_t) ea[1] << 32)
137 | ((uint64_t) ea[2] << 24)
138 | ((uint64_t) ea[3] << 16)
139 | ((uint64_t) ea[4] << 8)
142 static inline uint64_t eth_addr_vlan_to_uint64(const uint8_t ea[ETH_ADDR_LEN],
145 return (((uint64_t)vlan << 48) | eth_addr_to_uint64(ea));
147 static inline void eth_addr_from_uint64(uint64_t x, uint8_t ea[ETH_ADDR_LEN])
156 static inline void eth_addr_mark_random(uint8_t ea[ETH_ADDR_LEN])
158 ea[0] &= ~1; /* Unicast. */
159 ea[0] |= 2; /* Private. */
161 static inline void eth_addr_random(uint8_t ea[ETH_ADDR_LEN])
163 random_bytes(ea, ETH_ADDR_LEN);
164 eth_addr_mark_random(ea);
166 static inline void eth_addr_nicira_random(uint8_t ea[ETH_ADDR_LEN])
170 /* Set the OUI to the Nicira one. */
175 /* Set the top bit to indicate random Nicira address. */
178 static inline uint32_t hash_mac(const uint8_t ea[ETH_ADDR_LEN],
179 const uint16_t vlan, const uint32_t basis)
181 return hash_uint64_basis(eth_addr_vlan_to_uint64(ea, vlan), basis);
184 bool eth_addr_is_reserved(const uint8_t ea[ETH_ADDR_LEN]);
185 bool eth_addr_from_string(const char *, uint8_t ea[ETH_ADDR_LEN]);
187 void compose_rarp(struct ofpbuf *, const uint8_t eth_src[ETH_ADDR_LEN]);
189 void eth_push_vlan(struct ofpbuf *, ovs_be16 tpid, ovs_be16 tci);
190 void eth_pop_vlan(struct ofpbuf *);
192 const char *eth_from_hex(const char *hex, struct ofpbuf **packetp);
193 void eth_format_masked(const uint8_t eth[ETH_ADDR_LEN],
194 const uint8_t mask[ETH_ADDR_LEN], struct ds *s);
195 void eth_addr_bitand(const uint8_t src[ETH_ADDR_LEN],
196 const uint8_t mask[ETH_ADDR_LEN],
197 uint8_t dst[ETH_ADDR_LEN]);
199 void set_mpls_lse(struct ofpbuf *, ovs_be32 label);
200 void push_mpls(struct ofpbuf *packet, ovs_be16 ethtype, ovs_be32 lse);
201 void pop_mpls(struct ofpbuf *, ovs_be16 ethtype);
203 void set_mpls_lse_ttl(ovs_be32 *lse, uint8_t ttl);
204 void set_mpls_lse_tc(ovs_be32 *lse, uint8_t tc);
205 void set_mpls_lse_label(ovs_be32 *lse, ovs_be32 label);
206 void set_mpls_lse_bos(ovs_be32 *lse, uint8_t bos);
207 ovs_be32 set_mpls_lse_values(uint8_t ttl, uint8_t tc, uint8_t bos,
212 * uint8_t mac[ETH_ADDR_LEN];
214 * printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac));
217 #define ETH_ADDR_FMT \
218 "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
219 #define ETH_ADDR_ARGS(ea) \
220 (ea)[0], (ea)[1], (ea)[2], (ea)[3], (ea)[4], (ea)[5]
224 * char *string = "1 00:11:22:33:44:55 2";
225 * uint8_t mac[ETH_ADDR_LEN];
228 * if (ovs_scan(string, "%d"ETH_ADDR_SCAN_FMT"%d",
229 * &a, ETH_ADDR_SCAN_ARGS(mac), &b)) {
233 #define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8
234 #define ETH_ADDR_SCAN_ARGS(ea) \
235 &(ea)[0], &(ea)[1], &(ea)[2], &(ea)[3], &(ea)[4], &(ea)[5]
237 #define ETH_TYPE_IP 0x0800
238 #define ETH_TYPE_ARP 0x0806
239 #define ETH_TYPE_TEB 0x6558
240 #define ETH_TYPE_VLAN_8021Q 0x8100
241 #define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q
242 #define ETH_TYPE_VLAN_8021AD 0x88a8
243 #define ETH_TYPE_IPV6 0x86dd
244 #define ETH_TYPE_LACP 0x8809
245 #define ETH_TYPE_RARP 0x8035
246 #define ETH_TYPE_MPLS 0x8847
247 #define ETH_TYPE_MPLS_MCAST 0x8848
249 static inline bool eth_type_mpls(ovs_be16 eth_type)
251 return eth_type == htons(ETH_TYPE_MPLS) ||
252 eth_type == htons(ETH_TYPE_MPLS_MCAST);
255 /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame
257 #define ETH_TYPE_MIN 0x600
259 #define ETH_HEADER_LEN 14
260 #define ETH_PAYLOAD_MIN 46
261 #define ETH_PAYLOAD_MAX 1500
262 #define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN)
263 #define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX)
264 #define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX)
267 uint8_t eth_dst[ETH_ADDR_LEN];
268 uint8_t eth_src[ETH_ADDR_LEN];
271 BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header));
273 #define LLC_DSAP_SNAP 0xaa
274 #define LLC_SSAP_SNAP 0xaa
275 #define LLC_CNTL_SNAP 3
277 #define LLC_HEADER_LEN 3
284 BUILD_ASSERT_DECL(LLC_HEADER_LEN == sizeof(struct llc_header));
286 /* LLC field values used for STP frames. */
287 #define STP_LLC_SSAP 0x42
288 #define STP_LLC_DSAP 0x42
289 #define STP_LLC_CNTL 0x03
291 #define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so
292 sizeof(SNAP_ORG_ETHERNET) == 3. */
293 #define SNAP_HEADER_LEN 5
299 BUILD_ASSERT_DECL(SNAP_HEADER_LEN == sizeof(struct snap_header));
301 #define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN)
303 struct llc_snap_header {
304 struct llc_header llc;
305 struct snap_header snap;
307 BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header));
309 #define VLAN_VID_MASK 0x0fff
310 #define VLAN_VID_SHIFT 0
312 #define VLAN_PCP_MASK 0xe000
313 #define VLAN_PCP_SHIFT 13
315 #define VLAN_CFI 0x1000
316 #define VLAN_CFI_SHIFT 12
318 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
319 * returns the VLAN ID in host byte order. */
320 static inline uint16_t
321 vlan_tci_to_vid(ovs_be16 vlan_tci)
323 return (ntohs(vlan_tci) & VLAN_VID_MASK) >> VLAN_VID_SHIFT;
326 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
327 * returns the priority code point (PCP) in host byte order. */
329 vlan_tci_to_pcp(ovs_be16 vlan_tci)
331 return (ntohs(vlan_tci) & VLAN_PCP_MASK) >> VLAN_PCP_SHIFT;
334 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
335 * returns the Canonical Format Indicator (CFI). */
337 vlan_tci_to_cfi(ovs_be16 vlan_tci)
339 return (vlan_tci & htons(VLAN_CFI)) != 0;
342 #define VLAN_HEADER_LEN 4
344 ovs_be16 vlan_tci; /* Lowest 12 bits are VLAN ID. */
345 ovs_be16 vlan_next_type;
347 BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header));
349 #define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN)
351 struct vlan_eth_header {
352 uint8_t veth_dst[ETH_ADDR_LEN];
353 uint8_t veth_src[ETH_ADDR_LEN];
354 ovs_be16 veth_type; /* Always htons(ETH_TYPE_VLAN). */
355 ovs_be16 veth_tci; /* Lowest 12 bits are VLAN ID. */
356 ovs_be16 veth_next_type;
358 BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header));
360 /* MPLS related definitions */
361 #define MPLS_TTL_MASK 0x000000ff
362 #define MPLS_TTL_SHIFT 0
364 #define MPLS_BOS_MASK 0x00000100
365 #define MPLS_BOS_SHIFT 8
367 #define MPLS_TC_MASK 0x00000e00
368 #define MPLS_TC_SHIFT 9
370 #define MPLS_LABEL_MASK 0xfffff000
371 #define MPLS_LABEL_SHIFT 12
376 ovs_16aligned_be32 mpls_lse;
378 BUILD_ASSERT_DECL(MPLS_HLEN == sizeof(struct mpls_hdr));
380 /* Given a mpls label stack entry in network byte order
381 * return mpls label in host byte order */
382 static inline uint32_t
383 mpls_lse_to_label(ovs_be32 mpls_lse)
385 return (ntohl(mpls_lse) & MPLS_LABEL_MASK) >> MPLS_LABEL_SHIFT;
388 /* Given a mpls label stack entry in network byte order
390 static inline uint8_t
391 mpls_lse_to_tc(ovs_be32 mpls_lse)
393 return (ntohl(mpls_lse) & MPLS_TC_MASK) >> MPLS_TC_SHIFT;
396 /* Given a mpls label stack entry in network byte order
398 static inline uint8_t
399 mpls_lse_to_ttl(ovs_be32 mpls_lse)
401 return (ntohl(mpls_lse) & MPLS_TTL_MASK) >> MPLS_TTL_SHIFT;
404 /* Set TTL in mpls lse. */
406 flow_set_mpls_lse_ttl(ovs_be32 *mpls_lse, uint8_t ttl)
408 *mpls_lse &= ~htonl(MPLS_TTL_MASK);
409 *mpls_lse |= htonl(ttl << MPLS_TTL_SHIFT);
412 /* Given a mpls label stack entry in network byte order
413 * return mpls BoS bit */
414 static inline uint8_t
415 mpls_lse_to_bos(ovs_be32 mpls_lse)
417 return (mpls_lse & htonl(MPLS_BOS_MASK)) != 0;
420 #define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32
421 #define IP_ARGS(ip) \
423 (ntohl(ip) >> 16) & 0xff, \
424 (ntohl(ip) >> 8) & 0xff, \
429 * char *string = "1 33.44.55.66 2";
433 * if (ovs_scan(string, "%d"IP_SCAN_FMT"%d", &a, IP_SCAN_ARGS(&ip), &b)) {
437 #define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8
438 #define IP_SCAN_ARGS(ip) \
439 ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \
440 &((uint8_t *) ip)[1], \
441 &((uint8_t *) ip)[2], \
444 /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N
445 * high-order 1-bits and 32-N low-order 0-bits. */
447 ip_is_cidr(ovs_be32 netmask)
449 uint32_t x = ~ntohl(netmask);
450 return !(x & (x + 1));
453 ip_is_multicast(ovs_be32 ip)
455 return (ip & htonl(0xf0000000)) == htonl(0xe0000000);
458 ip_is_local_multicast(ovs_be32 ip)
460 return (ip & htonl(0xffffff00)) == htonl(0xe0000000);
462 int ip_count_cidr_bits(ovs_be32 netmask);
463 void ip_format_masked(ovs_be32 ip, ovs_be32 mask, struct ds *);
465 #define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4)
466 #define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15)
467 #define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl))
470 #define IPPROTO_SCTP 132
474 #define IP_ECN_NOT_ECT 0x0
475 #define IP_ECN_ECT_1 0x01
476 #define IP_ECN_ECT_0 0x02
477 #define IP_ECN_CE 0x03
478 #define IP_ECN_MASK 0x03
479 #define IP_DSCP_MASK 0xfc
483 #define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */
484 #define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */
485 #define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */
486 #define IP_IS_FRAGMENT(ip_frag_off) \
487 ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK))
489 #define IP_HEADER_LEN 20
495 ovs_be16 ip_frag_off;
499 ovs_16aligned_be32 ip_src;
500 ovs_16aligned_be32 ip_dst;
503 BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header));
505 #define ICMP_HEADER_LEN 8
519 ovs_16aligned_be32 gateway;
522 BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_header));
524 #define IGMP_HEADER_LEN 8
529 ovs_16aligned_be32 group;
531 BUILD_ASSERT_DECL(IGMP_HEADER_LEN == sizeof(struct igmp_header));
533 #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */
534 #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */
535 #define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x12 */
536 #define IGMP_HOST_LEAVE_MESSAGE 0x17
537 #define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x12 */
539 #define SCTP_HEADER_LEN 12
543 ovs_16aligned_be32 sctp_vtag;
544 ovs_16aligned_be32 sctp_csum;
546 BUILD_ASSERT_DECL(SCTP_HEADER_LEN == sizeof(struct sctp_header));
548 #define UDP_HEADER_LEN 8
555 BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header));
557 #define TCP_FIN 0x001
558 #define TCP_SYN 0x002
559 #define TCP_RST 0x004
560 #define TCP_PSH 0x008
561 #define TCP_ACK 0x010
562 #define TCP_URG 0x020
563 #define TCP_ECE 0x040
564 #define TCP_CWR 0x080
567 #define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12)))
568 #define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff)
569 #define TCP_FLAGS_BE16(tcp_ctl) ((tcp_ctl) & htons(0x0fff))
570 #define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12)
572 #define TCP_HEADER_LEN 20
576 ovs_16aligned_be32 tcp_seq;
577 ovs_16aligned_be32 tcp_ack;
583 BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header));
585 #define ARP_HRD_ETHERNET 1
586 #define ARP_PRO_IP 0x0800
587 #define ARP_OP_REQUEST 1
588 #define ARP_OP_REPLY 2
589 #define ARP_OP_RARP 3
591 #define ARP_ETH_HEADER_LEN 28
592 struct arp_eth_header {
593 /* Generic members. */
594 ovs_be16 ar_hrd; /* Hardware type. */
595 ovs_be16 ar_pro; /* Protocol type. */
596 uint8_t ar_hln; /* Hardware address length. */
597 uint8_t ar_pln; /* Protocol address length. */
598 ovs_be16 ar_op; /* Opcode. */
600 /* Ethernet+IPv4 specific members. */
601 uint8_t ar_sha[ETH_ADDR_LEN]; /* Sender hardware address. */
602 ovs_16aligned_be32 ar_spa; /* Sender protocol address. */
603 uint8_t ar_tha[ETH_ADDR_LEN]; /* Target hardware address. */
604 ovs_16aligned_be32 ar_tpa; /* Target protocol address. */
606 BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header));
608 /* Like struct in6_addr, but whereas that struct requires 32-bit alignment on
609 * most implementations, this one only requires 16-bit alignment. */
610 union ovs_16aligned_in6_addr {
612 ovs_16aligned_be32 be32[4];
615 /* Like struct in6_hdr, but whereas that struct requires 32-bit alignment, this
616 * one only requires 16-bit alignment. */
617 struct ovs_16aligned_ip6_hdr {
619 struct ovs_16aligned_ip6_hdrctl {
620 ovs_16aligned_be32 ip6_un1_flow;
621 ovs_be16 ip6_un1_plen;
623 uint8_t ip6_un1_hlim;
627 union ovs_16aligned_in6_addr ip6_src;
628 union ovs_16aligned_in6_addr ip6_dst;
631 /* Like struct in6_frag, but whereas that struct requires 32-bit alignment,
632 * this one only requires 16-bit alignment. */
633 struct ovs_16aligned_ip6_frag {
635 uint8_t ip6f_reserved;
637 ovs_16aligned_be32 ip6f_ident;
640 #define ICMP6_HEADER_LEN 4
641 struct icmp6_header {
644 ovs_be16 icmp6_cksum;
646 BUILD_ASSERT_DECL(ICMP6_HEADER_LEN == sizeof(struct icmp6_header));
648 /* Neighbor Discovery option field.
649 * ND options are always a multiple of 8 bytes in size. */
652 uint8_t nd_opt_type; /* Values defined in icmp6.h */
653 uint8_t nd_opt_len; /* in units of 8 octets (the size of this struct) */
654 uint8_t nd_opt_data[6]; /* Ethernet address in the case of SLL or TLL options */
656 BUILD_ASSERT_DECL(ND_OPT_LEN == sizeof(struct ovs_nd_opt));
658 /* Like struct nd_msg (from ndisc.h), but whereas that struct requires 32-bit
659 * alignment, this one only requires 16-bit alignment. */
660 #define ND_MSG_LEN 24
662 struct icmp6_header icmph;
663 ovs_16aligned_be32 rco_flags;
664 union ovs_16aligned_in6_addr target;
665 struct ovs_nd_opt options[0];
667 BUILD_ASSERT_DECL(ND_MSG_LEN == sizeof(struct ovs_nd_msg));
669 /* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */
670 #define IPV6_LABEL_MASK 0x000fffff
674 * char *string = "1 ::1 2";
675 * char ipv6_s[IPV6_SCAN_LEN + 1];
676 * struct in6_addr ipv6;
678 * if (ovs_scan(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b)
679 * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
683 #define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]"
684 #define IPV6_SCAN_LEN 46
686 extern const struct in6_addr in6addr_exact;
687 #define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
688 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } }
690 static inline bool ipv6_addr_equals(const struct in6_addr *a,
691 const struct in6_addr *b)
693 #ifdef IN6_ARE_ADDR_EQUAL
694 return IN6_ARE_ADDR_EQUAL(a, b);
696 return !memcmp(a, b, sizeof(*a));
700 static inline bool ipv6_mask_is_any(const struct in6_addr *mask) {
701 return ipv6_addr_equals(mask, &in6addr_any);
704 static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) {
705 return ipv6_addr_equals(mask, &in6addr_exact);
708 static inline bool dl_type_is_ip_any(ovs_be16 dl_type)
710 return dl_type == htons(ETH_TYPE_IP)
711 || dl_type == htons(ETH_TYPE_IPV6);
715 #define GENEVE_CRIT_OPT_TYPE (1 << 7)
719 #ifdef WORDS_BIGENDIAN
733 /* GRE protocol header */
734 struct gre_base_hdr {
739 #define GRE_CSUM 0x8000
740 #define GRE_ROUTING 0x4000
741 #define GRE_KEY 0x2000
742 #define GRE_SEQ 0x1000
743 #define GRE_STRICT 0x0800
744 #define GRE_REC 0x0700
745 #define GRE_FLAGS 0x00F8
746 #define GRE_VERSION 0x0007
748 /* VXLAN protocol header */
750 ovs_16aligned_be32 vx_flags;
751 ovs_16aligned_be32 vx_vni;
754 #define VXLAN_FLAGS 0x08000000 /* struct vxlanhdr.vx_flags required value. */
756 void format_ipv6_addr(char *addr_str, const struct in6_addr *addr);
757 void print_ipv6_addr(struct ds *string, const struct in6_addr *addr);
758 void print_ipv6_masked(struct ds *string, const struct in6_addr *addr,
759 const struct in6_addr *mask);
760 struct in6_addr ipv6_addr_bitand(const struct in6_addr *src,
761 const struct in6_addr *mask);
762 struct in6_addr ipv6_create_mask(int mask);
763 int ipv6_count_cidr_bits(const struct in6_addr *netmask);
764 bool ipv6_is_cidr(const struct in6_addr *netmask);
766 void *eth_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
767 const uint8_t eth_src[ETH_ADDR_LEN], uint16_t eth_type,
769 void *snap_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
770 const uint8_t eth_src[ETH_ADDR_LEN],
771 unsigned int oui, uint16_t snap_type, size_t size);
772 void packet_set_ipv4(struct ofpbuf *, ovs_be32 src, ovs_be32 dst, uint8_t tos,
774 void packet_set_ipv6(struct ofpbuf *, uint8_t proto, const ovs_be32 src[4],
775 const ovs_be32 dst[4], uint8_t tc,
776 ovs_be32 fl, uint8_t hlmit);
777 void packet_set_tcp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
778 void packet_set_udp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
779 void packet_set_sctp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
780 void packet_set_nd(struct ofpbuf *, const ovs_be32 target[4],
781 const uint8_t sll[6], const uint8_t tll[6]);
783 void packet_format_tcp_flags(struct ds *, uint16_t);
784 const char *packet_tcp_flag_to_string(uint32_t flag);
785 void compose_arp(struct ofpbuf *b, const uint8_t eth_src[ETH_ADDR_LEN],
786 ovs_be32 ip_src, ovs_be32 ip_dst);
788 #endif /* packets.h */