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[6])
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[6])
95 static inline bool eth_addr_is_local(const uint8_t ea[6])
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[6])
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_VLAN_8021Q 0x8100
240 #define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q
241 #define ETH_TYPE_VLAN_8021AD 0x88a8
242 #define ETH_TYPE_IPV6 0x86dd
243 #define ETH_TYPE_LACP 0x8809
244 #define ETH_TYPE_RARP 0x8035
245 #define ETH_TYPE_MPLS 0x8847
246 #define ETH_TYPE_MPLS_MCAST 0x8848
248 static inline bool eth_type_mpls(ovs_be16 eth_type)
250 return eth_type == htons(ETH_TYPE_MPLS) ||
251 eth_type == htons(ETH_TYPE_MPLS_MCAST);
254 /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame
256 #define ETH_TYPE_MIN 0x600
258 #define ETH_HEADER_LEN 14
259 #define ETH_PAYLOAD_MIN 46
260 #define ETH_PAYLOAD_MAX 1500
261 #define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN)
262 #define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX)
263 #define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX)
266 uint8_t eth_dst[ETH_ADDR_LEN];
267 uint8_t eth_src[ETH_ADDR_LEN];
270 BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header));
272 #define LLC_DSAP_SNAP 0xaa
273 #define LLC_SSAP_SNAP 0xaa
274 #define LLC_CNTL_SNAP 3
276 #define LLC_HEADER_LEN 3
283 BUILD_ASSERT_DECL(LLC_HEADER_LEN == sizeof(struct llc_header));
285 #define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so
286 sizeof(SNAP_ORG_ETHERNET) == 3. */
287 #define SNAP_HEADER_LEN 5
293 BUILD_ASSERT_DECL(SNAP_HEADER_LEN == sizeof(struct snap_header));
295 #define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN)
297 struct llc_snap_header {
298 struct llc_header llc;
299 struct snap_header snap;
301 BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header));
303 #define VLAN_VID_MASK 0x0fff
304 #define VLAN_VID_SHIFT 0
306 #define VLAN_PCP_MASK 0xe000
307 #define VLAN_PCP_SHIFT 13
309 #define VLAN_CFI 0x1000
310 #define VLAN_CFI_SHIFT 12
312 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
313 * returns the VLAN ID in host byte order. */
314 static inline uint16_t
315 vlan_tci_to_vid(ovs_be16 vlan_tci)
317 return (ntohs(vlan_tci) & VLAN_VID_MASK) >> VLAN_VID_SHIFT;
320 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
321 * returns the priority code point (PCP) in host byte order. */
323 vlan_tci_to_pcp(ovs_be16 vlan_tci)
325 return (ntohs(vlan_tci) & VLAN_PCP_MASK) >> VLAN_PCP_SHIFT;
328 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
329 * returns the Canonical Format Indicator (CFI). */
331 vlan_tci_to_cfi(ovs_be16 vlan_tci)
333 return (vlan_tci & htons(VLAN_CFI)) != 0;
336 #define VLAN_HEADER_LEN 4
338 ovs_be16 vlan_tci; /* Lowest 12 bits are VLAN ID. */
339 ovs_be16 vlan_next_type;
341 BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header));
343 #define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN)
345 struct vlan_eth_header {
346 uint8_t veth_dst[ETH_ADDR_LEN];
347 uint8_t veth_src[ETH_ADDR_LEN];
348 ovs_be16 veth_type; /* Always htons(ETH_TYPE_VLAN). */
349 ovs_be16 veth_tci; /* Lowest 12 bits are VLAN ID. */
350 ovs_be16 veth_next_type;
352 BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header));
354 /* MPLS related definitions */
355 #define MPLS_TTL_MASK 0x000000ff
356 #define MPLS_TTL_SHIFT 0
358 #define MPLS_BOS_MASK 0x00000100
359 #define MPLS_BOS_SHIFT 8
361 #define MPLS_TC_MASK 0x00000e00
362 #define MPLS_TC_SHIFT 9
364 #define MPLS_LABEL_MASK 0xfffff000
365 #define MPLS_LABEL_SHIFT 12
370 ovs_16aligned_be32 mpls_lse;
372 BUILD_ASSERT_DECL(MPLS_HLEN == sizeof(struct mpls_hdr));
374 /* Given a mpls label stack entry in network byte order
375 * return mpls label in host byte order */
376 static inline uint32_t
377 mpls_lse_to_label(ovs_be32 mpls_lse)
379 return (ntohl(mpls_lse) & MPLS_LABEL_MASK) >> MPLS_LABEL_SHIFT;
382 /* Given a mpls label stack entry in network byte order
384 static inline uint8_t
385 mpls_lse_to_tc(ovs_be32 mpls_lse)
387 return (ntohl(mpls_lse) & MPLS_TC_MASK) >> MPLS_TC_SHIFT;
390 /* Given a mpls label stack entry in network byte order
392 static inline uint8_t
393 mpls_lse_to_ttl(ovs_be32 mpls_lse)
395 return (ntohl(mpls_lse) & MPLS_TTL_MASK) >> MPLS_TTL_SHIFT;
398 /* Set TTL in mpls lse. */
400 flow_set_mpls_lse_ttl(ovs_be32 *mpls_lse, uint8_t ttl)
402 *mpls_lse &= ~htonl(MPLS_TTL_MASK);
403 *mpls_lse |= htonl(ttl << MPLS_TTL_SHIFT);
406 /* Given a mpls label stack entry in network byte order
407 * return mpls BoS bit */
408 static inline uint8_t
409 mpls_lse_to_bos(ovs_be32 mpls_lse)
411 return (mpls_lse & htonl(MPLS_BOS_MASK)) != 0;
414 #define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32
415 #define IP_ARGS(ip) \
417 (ntohl(ip) >> 16) & 0xff, \
418 (ntohl(ip) >> 8) & 0xff, \
423 * char *string = "1 33.44.55.66 2";
427 * if (ovs_scan(string, "%d"IP_SCAN_FMT"%d", &a, IP_SCAN_ARGS(&ip), &b)) {
431 #define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8
432 #define IP_SCAN_ARGS(ip) \
433 ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \
434 &((uint8_t *) ip)[1], \
435 &((uint8_t *) ip)[2], \
438 /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N
439 * high-order 1-bits and 32-N low-order 0-bits. */
441 ip_is_cidr(ovs_be32 netmask)
443 uint32_t x = ~ntohl(netmask);
444 return !(x & (x + 1));
447 ip_is_multicast(ovs_be32 ip)
449 return (ip & htonl(0xf0000000)) == htonl(0xe0000000);
452 ip_is_local_multicast(ovs_be32 ip)
454 return (ip & htonl(0xffffff00)) == htonl(0xe0000000);
456 int ip_count_cidr_bits(ovs_be32 netmask);
457 void ip_format_masked(ovs_be32 ip, ovs_be32 mask, struct ds *);
459 #define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4)
460 #define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15)
461 #define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl))
464 #define IPPROTO_SCTP 132
468 #define IP_ECN_NOT_ECT 0x0
469 #define IP_ECN_ECT_1 0x01
470 #define IP_ECN_ECT_0 0x02
471 #define IP_ECN_CE 0x03
472 #define IP_ECN_MASK 0x03
473 #define IP_DSCP_MASK 0xfc
477 #define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */
478 #define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */
479 #define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */
480 #define IP_IS_FRAGMENT(ip_frag_off) \
481 ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK))
483 #define IP_HEADER_LEN 20
489 ovs_be16 ip_frag_off;
493 ovs_16aligned_be32 ip_src;
494 ovs_16aligned_be32 ip_dst;
496 BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header));
498 #define ICMP_HEADER_LEN 8
512 ovs_16aligned_be32 gateway;
514 uint8_t icmp_data[0];
516 BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_header));
518 #define IGMP_HEADER_LEN 8
523 ovs_16aligned_be32 group;
525 BUILD_ASSERT_DECL(IGMP_HEADER_LEN == sizeof(struct igmp_header));
527 #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */
528 #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */
529 #define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x12 */
530 #define IGMP_HOST_LEAVE_MESSAGE 0x17
531 #define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x12 */
533 #define SCTP_HEADER_LEN 12
537 ovs_16aligned_be32 sctp_vtag;
538 ovs_16aligned_be32 sctp_csum;
540 BUILD_ASSERT_DECL(SCTP_HEADER_LEN == sizeof(struct sctp_header));
542 #define UDP_HEADER_LEN 8
549 BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header));
551 #define TCP_FIN 0x001
552 #define TCP_SYN 0x002
553 #define TCP_RST 0x004
554 #define TCP_PSH 0x008
555 #define TCP_ACK 0x010
556 #define TCP_URG 0x020
557 #define TCP_ECE 0x040
558 #define TCP_CWR 0x080
561 #define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12)))
562 #define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff)
563 #define TCP_FLAGS_BE16(tcp_ctl) ((tcp_ctl) & htons(0x0fff))
564 #define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12)
566 #define TCP_HEADER_LEN 20
570 ovs_16aligned_be32 tcp_seq;
571 ovs_16aligned_be32 tcp_ack;
577 BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header));
579 #define ARP_HRD_ETHERNET 1
580 #define ARP_PRO_IP 0x0800
581 #define ARP_OP_REQUEST 1
582 #define ARP_OP_REPLY 2
583 #define ARP_OP_RARP 3
585 #define ARP_ETH_HEADER_LEN 28
586 struct arp_eth_header {
587 /* Generic members. */
588 ovs_be16 ar_hrd; /* Hardware type. */
589 ovs_be16 ar_pro; /* Protocol type. */
590 uint8_t ar_hln; /* Hardware address length. */
591 uint8_t ar_pln; /* Protocol address length. */
592 ovs_be16 ar_op; /* Opcode. */
594 /* Ethernet+IPv4 specific members. */
595 uint8_t ar_sha[ETH_ADDR_LEN]; /* Sender hardware address. */
596 ovs_16aligned_be32 ar_spa; /* Sender protocol address. */
597 uint8_t ar_tha[ETH_ADDR_LEN]; /* Target hardware address. */
598 ovs_16aligned_be32 ar_tpa; /* Target protocol address. */
600 BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header));
602 /* Like struct in6_addr, but whereas that struct requires 32-bit alignment on
603 * most implementations, this one only requires 16-bit alignment. */
604 union ovs_16aligned_in6_addr {
606 ovs_16aligned_be32 be32[4];
609 /* Like struct in6_hdr, but whereas that struct requires 32-bit alignment, this
610 * one only requires 16-bit alignment. */
611 struct ovs_16aligned_ip6_hdr {
613 struct ovs_16aligned_ip6_hdrctl {
614 ovs_16aligned_be32 ip6_un1_flow;
615 ovs_be16 ip6_un1_plen;
617 uint8_t ip6_un1_hlim;
621 union ovs_16aligned_in6_addr ip6_src;
622 union ovs_16aligned_in6_addr ip6_dst;
625 /* Like struct in6_frag, but whereas that struct requires 32-bit alignment,
626 * this one only requires 16-bit alignment. */
627 struct ovs_16aligned_ip6_frag {
629 uint8_t ip6f_reserved;
631 ovs_16aligned_be32 ip6f_ident;
634 #define ICMP6_HEADER_LEN 4
635 struct icmp6_header {
638 ovs_be16 icmp6_cksum;
639 uint8_t icmp6_data[0];
641 BUILD_ASSERT_DECL(ICMP6_HEADER_LEN == sizeof(struct icmp6_header));
643 /* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */
644 #define IPV6_LABEL_MASK 0x000fffff
648 * char *string = "1 ::1 2";
649 * char ipv6_s[IPV6_SCAN_LEN + 1];
650 * struct in6_addr ipv6;
652 * if (ovs_scan(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b)
653 * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
657 #define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]"
658 #define IPV6_SCAN_LEN 46
660 extern const struct in6_addr in6addr_exact;
661 #define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
662 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } }
664 static inline bool ipv6_addr_equals(const struct in6_addr *a,
665 const struct in6_addr *b)
667 #ifdef IN6_ARE_ADDR_EQUAL
668 return IN6_ARE_ADDR_EQUAL(a, b);
670 return !memcmp(a, b, sizeof(*a));
674 static inline bool ipv6_mask_is_any(const struct in6_addr *mask) {
675 return ipv6_addr_equals(mask, &in6addr_any);
678 static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) {
679 return ipv6_addr_equals(mask, &in6addr_exact);
682 static inline bool dl_type_is_ip_any(ovs_be16 dl_type)
684 return dl_type == htons(ETH_TYPE_IP)
685 || dl_type == htons(ETH_TYPE_IPV6);
688 #define GENEVE_CRIT_OPT_TYPE (1 << 7)
706 void format_ipv6_addr(char *addr_str, const struct in6_addr *addr);
707 void print_ipv6_addr(struct ds *string, const struct in6_addr *addr);
708 void print_ipv6_masked(struct ds *string, const struct in6_addr *addr,
709 const struct in6_addr *mask);
710 struct in6_addr ipv6_addr_bitand(const struct in6_addr *src,
711 const struct in6_addr *mask);
712 struct in6_addr ipv6_create_mask(int mask);
713 int ipv6_count_cidr_bits(const struct in6_addr *netmask);
714 bool ipv6_is_cidr(const struct in6_addr *netmask);
716 void *eth_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
717 const uint8_t eth_src[ETH_ADDR_LEN], uint16_t eth_type,
719 void *snap_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
720 const uint8_t eth_src[ETH_ADDR_LEN],
721 unsigned int oui, uint16_t snap_type, size_t size);
722 void packet_set_ipv4(struct ofpbuf *, ovs_be32 src, ovs_be32 dst, uint8_t tos,
724 void packet_set_ipv6(struct ofpbuf *, uint8_t proto, const ovs_be32 src[4],
725 const ovs_be32 dst[4], uint8_t tc,
726 ovs_be32 fl, uint8_t hlmit);
727 void packet_set_tcp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
728 void packet_set_udp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
729 void packet_set_sctp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
731 void packet_format_tcp_flags(struct ds *, uint16_t);
732 const char *packet_tcp_flag_to_string(uint32_t flag);
734 #endif /* packets.h */