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>
27 #include "openvswitch/types.h"
34 /* Datapath packet metadata */
36 struct flow_tnl tunnel; /* Encapsulating tunnel parameters. */
37 uint32_t skb_priority; /* Packet priority for QoS. */
38 uint32_t pkt_mark; /* Packet mark. */
39 odp_port_t in_port; /* Input port. */
42 #define PKT_METADATA_INITIALIZER(PORT) \
43 (struct pkt_metadata){ { 0, 0, 0, 0, 0, 0}, 0, 0, (PORT) }
45 bool dpid_from_string(const char *s, uint64_t *dpidp);
47 #define ETH_ADDR_LEN 6
49 static const uint8_t eth_addr_broadcast[ETH_ADDR_LEN] OVS_UNUSED
50 = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
52 static const uint8_t eth_addr_stp[ETH_ADDR_LEN] OVS_UNUSED
53 = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00 };
55 static const uint8_t eth_addr_lacp[ETH_ADDR_LEN] OVS_UNUSED
56 = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 };
58 static const uint8_t eth_addr_bfd[ETH_ADDR_LEN] OVS_UNUSED
59 = { 0x00, 0x23, 0x20, 0x00, 0x00, 0x01 };
61 static inline bool eth_addr_is_broadcast(const uint8_t ea[6])
63 return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
66 static inline bool eth_addr_is_multicast(const uint8_t ea[6])
70 static inline bool eth_addr_is_local(const uint8_t ea[6])
72 /* Local if it is either a locally administered address or a Nicira random
75 || (ea[0] == 0x00 && ea[1] == 0x23 && ea[2] == 0x20 && ea[3] & 0x80);
77 static inline bool eth_addr_is_zero(const uint8_t ea[6])
79 return !(ea[0] | ea[1] | ea[2] | ea[3] | ea[4] | ea[5]);
82 static inline int eth_mask_is_exact(const uint8_t ea[ETH_ADDR_LEN])
84 return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
87 static inline int eth_addr_compare_3way(const uint8_t a[ETH_ADDR_LEN],
88 const uint8_t b[ETH_ADDR_LEN])
90 return memcmp(a, b, ETH_ADDR_LEN);
92 static inline bool eth_addr_equals(const uint8_t a[ETH_ADDR_LEN],
93 const uint8_t b[ETH_ADDR_LEN])
95 return !eth_addr_compare_3way(a, b);
97 static inline bool eth_addr_equal_except(const uint8_t a[ETH_ADDR_LEN],
98 const uint8_t b[ETH_ADDR_LEN],
99 const uint8_t mask[ETH_ADDR_LEN])
101 return !(((a[0] ^ b[0]) & mask[0])
102 || ((a[1] ^ b[1]) & mask[1])
103 || ((a[2] ^ b[2]) & mask[2])
104 || ((a[3] ^ b[3]) & mask[3])
105 || ((a[4] ^ b[4]) & mask[4])
106 || ((a[5] ^ b[5]) & mask[5]));
108 static inline uint64_t eth_addr_to_uint64(const uint8_t ea[ETH_ADDR_LEN])
110 return (((uint64_t) ea[0] << 40)
111 | ((uint64_t) ea[1] << 32)
112 | ((uint64_t) ea[2] << 24)
113 | ((uint64_t) ea[3] << 16)
114 | ((uint64_t) ea[4] << 8)
117 static inline void eth_addr_from_uint64(uint64_t x, uint8_t ea[ETH_ADDR_LEN])
126 static inline void eth_addr_mark_random(uint8_t ea[ETH_ADDR_LEN])
128 ea[0] &= ~1; /* Unicast. */
129 ea[0] |= 2; /* Private. */
131 static inline void eth_addr_random(uint8_t ea[ETH_ADDR_LEN])
133 random_bytes(ea, ETH_ADDR_LEN);
134 eth_addr_mark_random(ea);
136 static inline void eth_addr_nicira_random(uint8_t ea[ETH_ADDR_LEN])
140 /* Set the OUI to the Nicira one. */
145 /* Set the top bit to indicate random Nicira address. */
149 bool eth_addr_is_reserved(const uint8_t ea[ETH_ADDR_LEN]);
150 bool eth_addr_from_string(const char *, uint8_t ea[ETH_ADDR_LEN]);
152 void compose_rarp(struct ofpbuf *, const uint8_t eth_src[ETH_ADDR_LEN]);
154 void eth_push_vlan(struct ofpbuf *, ovs_be16 tpid, ovs_be16 tci);
155 void eth_pop_vlan(struct ofpbuf *);
157 const char *eth_from_hex(const char *hex, struct ofpbuf **packetp);
158 void eth_format_masked(const uint8_t eth[ETH_ADDR_LEN],
159 const uint8_t mask[ETH_ADDR_LEN], struct ds *s);
160 void eth_addr_bitand(const uint8_t src[ETH_ADDR_LEN],
161 const uint8_t mask[ETH_ADDR_LEN],
162 uint8_t dst[ETH_ADDR_LEN]);
164 void set_mpls_lse(struct ofpbuf *, ovs_be32 label);
165 void push_mpls(struct ofpbuf *packet, ovs_be16 ethtype, ovs_be32 lse);
166 void pop_mpls(struct ofpbuf *, ovs_be16 ethtype);
168 void set_mpls_lse_ttl(ovs_be32 *lse, uint8_t ttl);
169 void set_mpls_lse_tc(ovs_be32 *lse, uint8_t tc);
170 void set_mpls_lse_label(ovs_be32 *lse, ovs_be32 label);
171 void set_mpls_lse_bos(ovs_be32 *lse, uint8_t bos);
172 ovs_be32 set_mpls_lse_values(uint8_t ttl, uint8_t tc, uint8_t bos,
177 * uint8_t mac[ETH_ADDR_LEN];
179 * printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac));
182 #define ETH_ADDR_FMT \
183 "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
184 #define ETH_ADDR_ARGS(ea) \
185 (ea)[0], (ea)[1], (ea)[2], (ea)[3], (ea)[4], (ea)[5]
189 * char *string = "1 00:11:22:33:44:55 2";
190 * uint8_t mac[ETH_ADDR_LEN];
193 * if (ovs_scan(string, "%d"ETH_ADDR_SCAN_FMT"%d",
194 * &a, ETH_ADDR_SCAN_ARGS(mac), &b)) {
198 #define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8
199 #define ETH_ADDR_SCAN_ARGS(ea) \
200 &(ea)[0], &(ea)[1], &(ea)[2], &(ea)[3], &(ea)[4], &(ea)[5]
202 #define ETH_TYPE_IP 0x0800
203 #define ETH_TYPE_ARP 0x0806
204 #define ETH_TYPE_VLAN_8021Q 0x8100
205 #define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q
206 #define ETH_TYPE_VLAN_8021AD 0x88a8
207 #define ETH_TYPE_IPV6 0x86dd
208 #define ETH_TYPE_LACP 0x8809
209 #define ETH_TYPE_RARP 0x8035
210 #define ETH_TYPE_MPLS 0x8847
211 #define ETH_TYPE_MPLS_MCAST 0x8848
213 static inline bool eth_type_mpls(ovs_be16 eth_type)
215 return eth_type == htons(ETH_TYPE_MPLS) ||
216 eth_type == htons(ETH_TYPE_MPLS_MCAST);
219 /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame
221 #define ETH_TYPE_MIN 0x600
223 #define ETH_HEADER_LEN 14
224 #define ETH_PAYLOAD_MIN 46
225 #define ETH_PAYLOAD_MAX 1500
226 #define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN)
227 #define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX)
228 #define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX)
231 uint8_t eth_dst[ETH_ADDR_LEN];
232 uint8_t eth_src[ETH_ADDR_LEN];
235 BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header));
237 #define LLC_DSAP_SNAP 0xaa
238 #define LLC_SSAP_SNAP 0xaa
239 #define LLC_CNTL_SNAP 3
241 #define LLC_HEADER_LEN 3
248 BUILD_ASSERT_DECL(LLC_HEADER_LEN == sizeof(struct llc_header));
250 #define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so
251 sizeof(SNAP_ORG_ETHERNET) == 3. */
252 #define SNAP_HEADER_LEN 5
258 BUILD_ASSERT_DECL(SNAP_HEADER_LEN == sizeof(struct snap_header));
260 #define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN)
262 struct llc_snap_header {
263 struct llc_header llc;
264 struct snap_header snap;
266 BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header));
268 #define VLAN_VID_MASK 0x0fff
269 #define VLAN_VID_SHIFT 0
271 #define VLAN_PCP_MASK 0xe000
272 #define VLAN_PCP_SHIFT 13
274 #define VLAN_CFI 0x1000
275 #define VLAN_CFI_SHIFT 12
277 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
278 * returns the VLAN ID in host byte order. */
279 static inline uint16_t
280 vlan_tci_to_vid(ovs_be16 vlan_tci)
282 return (ntohs(vlan_tci) & VLAN_VID_MASK) >> VLAN_VID_SHIFT;
285 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
286 * returns the priority code point (PCP) in host byte order. */
288 vlan_tci_to_pcp(ovs_be16 vlan_tci)
290 return (ntohs(vlan_tci) & VLAN_PCP_MASK) >> VLAN_PCP_SHIFT;
293 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
294 * returns the Canonical Format Indicator (CFI). */
296 vlan_tci_to_cfi(ovs_be16 vlan_tci)
298 return (vlan_tci & htons(VLAN_CFI)) != 0;
301 #define VLAN_HEADER_LEN 4
303 ovs_be16 vlan_tci; /* Lowest 12 bits are VLAN ID. */
304 ovs_be16 vlan_next_type;
306 BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header));
308 #define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN)
310 struct vlan_eth_header {
311 uint8_t veth_dst[ETH_ADDR_LEN];
312 uint8_t veth_src[ETH_ADDR_LEN];
313 ovs_be16 veth_type; /* Always htons(ETH_TYPE_VLAN). */
314 ovs_be16 veth_tci; /* Lowest 12 bits are VLAN ID. */
315 ovs_be16 veth_next_type;
317 BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header));
319 /* MPLS related definitions */
320 #define MPLS_TTL_MASK 0x000000ff
321 #define MPLS_TTL_SHIFT 0
323 #define MPLS_BOS_MASK 0x00000100
324 #define MPLS_BOS_SHIFT 8
326 #define MPLS_TC_MASK 0x00000e00
327 #define MPLS_TC_SHIFT 9
329 #define MPLS_LABEL_MASK 0xfffff000
330 #define MPLS_LABEL_SHIFT 12
337 BUILD_ASSERT_DECL(MPLS_HLEN == sizeof(struct mpls_hdr));
339 /* Given a mpls label stack entry in network byte order
340 * return mpls label in host byte order */
341 static inline uint32_t
342 mpls_lse_to_label(ovs_be32 mpls_lse)
344 return (ntohl(mpls_lse) & MPLS_LABEL_MASK) >> MPLS_LABEL_SHIFT;
347 /* Given a mpls label stack entry in network byte order
349 static inline uint8_t
350 mpls_lse_to_tc(ovs_be32 mpls_lse)
352 return (ntohl(mpls_lse) & MPLS_TC_MASK) >> MPLS_TC_SHIFT;
355 /* Given a mpls label stack entry in network byte order
357 static inline uint8_t
358 mpls_lse_to_ttl(ovs_be32 mpls_lse)
360 return (ntohl(mpls_lse) & MPLS_TTL_MASK) >> MPLS_TTL_SHIFT;
363 /* Set TTL in mpls lse. */
365 flow_set_mpls_lse_ttl(ovs_be32 *mpls_lse, uint8_t ttl)
367 *mpls_lse &= ~htonl(MPLS_TTL_MASK);
368 *mpls_lse |= htonl(ttl << MPLS_TTL_SHIFT);
371 /* Given a mpls label stack entry in network byte order
372 * return mpls BoS bit */
373 static inline uint8_t
374 mpls_lse_to_bos(ovs_be32 mpls_lse)
376 return (mpls_lse & htonl(MPLS_BOS_MASK)) != 0;
379 #define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32
380 #define IP_ARGS(ip) \
382 (ntohl(ip) >> 16) & 0xff, \
383 (ntohl(ip) >> 8) & 0xff, \
388 * char *string = "1 33.44.55.66 2";
392 * if (ovs_scan(string, "%d"IP_SCAN_FMT"%d", &a, IP_SCAN_ARGS(&ip), &b)) {
396 #define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8
397 #define IP_SCAN_ARGS(ip) \
398 ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \
399 &((uint8_t *) ip)[1], \
400 &((uint8_t *) ip)[2], \
403 /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N
404 * high-order 1-bits and 32-N low-order 0-bits. */
406 ip_is_cidr(ovs_be32 netmask)
408 uint32_t x = ~ntohl(netmask);
409 return !(x & (x + 1));
412 ip_is_multicast(ovs_be32 ip)
414 return (ip & htonl(0xf0000000)) == htonl(0xe0000000);
416 int ip_count_cidr_bits(ovs_be32 netmask);
417 void ip_format_masked(ovs_be32 ip, ovs_be32 mask, struct ds *);
419 #define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4)
420 #define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15)
421 #define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl))
424 #define IPPROTO_SCTP 132
428 #define IP_ECN_NOT_ECT 0x0
429 #define IP_ECN_ECT_1 0x01
430 #define IP_ECN_ECT_0 0x02
431 #define IP_ECN_CE 0x03
432 #define IP_ECN_MASK 0x03
433 #define IP_DSCP_MASK 0xfc
437 #define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */
438 #define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */
439 #define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */
440 #define IP_IS_FRAGMENT(ip_frag_off) \
441 ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK))
443 #define IP_HEADER_LEN 20
449 ovs_be16 ip_frag_off;
453 ovs_16aligned_be32 ip_src;
454 ovs_16aligned_be32 ip_dst;
456 BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header));
458 #define ICMP_HEADER_LEN 8
472 ovs_16aligned_be32 gateway;
474 uint8_t icmp_data[0];
476 BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_header));
478 #define SCTP_HEADER_LEN 12
485 BUILD_ASSERT_DECL(SCTP_HEADER_LEN == sizeof(struct sctp_header));
487 #define UDP_HEADER_LEN 8
494 BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header));
496 #define TCP_FIN 0x001
497 #define TCP_SYN 0x002
498 #define TCP_RST 0x004
499 #define TCP_PSH 0x008
500 #define TCP_ACK 0x010
501 #define TCP_URG 0x020
502 #define TCP_ECE 0x040
503 #define TCP_CWR 0x080
506 #define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12)))
507 #define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff)
508 #define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12)
510 #define TCP_HEADER_LEN 20
514 ovs_16aligned_be32 tcp_seq;
515 ovs_16aligned_be32 tcp_ack;
521 BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header));
523 #define ARP_HRD_ETHERNET 1
524 #define ARP_PRO_IP 0x0800
525 #define ARP_OP_REQUEST 1
526 #define ARP_OP_REPLY 2
527 #define ARP_OP_RARP 3
529 #define ARP_ETH_HEADER_LEN 28
530 struct arp_eth_header {
531 /* Generic members. */
532 ovs_be16 ar_hrd; /* Hardware type. */
533 ovs_be16 ar_pro; /* Protocol type. */
534 uint8_t ar_hln; /* Hardware address length. */
535 uint8_t ar_pln; /* Protocol address length. */
536 ovs_be16 ar_op; /* Opcode. */
538 /* Ethernet+IPv4 specific members. */
539 uint8_t ar_sha[ETH_ADDR_LEN]; /* Sender hardware address. */
540 ovs_16aligned_be32 ar_spa; /* Sender protocol address. */
541 uint8_t ar_tha[ETH_ADDR_LEN]; /* Target hardware address. */
542 ovs_16aligned_be32 ar_tpa; /* Target protocol address. */
544 BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header));
546 /* Like struct in6_addr, but whereas that struct requires 32-bit alignment on
547 * most implementations, this one only requires 16-bit alignment. */
548 union ovs_16aligned_in6_addr {
550 ovs_16aligned_be32 be32[4];
553 /* Like struct in6_hdr, but whereas that struct requires 32-bit alignment, this
554 * one only requires 16-bit alignment. */
555 struct ovs_16aligned_ip6_hdr {
557 struct ovs_16aligned_ip6_hdrctl {
558 ovs_16aligned_be32 ip6_un1_flow;
559 ovs_be16 ip6_un1_plen;
561 uint8_t ip6_un1_hlim;
565 union ovs_16aligned_in6_addr ip6_src;
566 union ovs_16aligned_in6_addr ip6_dst;
569 /* Like struct in6_frag, but whereas that struct requires 32-bit alignment,
570 * this one only requires 16-bit alignment. */
571 struct ovs_16aligned_ip6_frag {
573 uint8_t ip6f_reserved;
575 ovs_16aligned_be32 ip6f_ident;
578 /* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */
579 #define IPV6_LABEL_MASK 0x000fffff
583 * char *string = "1 ::1 2";
584 * char ipv6_s[IPV6_SCAN_LEN + 1];
585 * struct in6_addr ipv6;
587 * if (ovs_scan(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b)
588 * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
592 #define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]"
593 #define IPV6_SCAN_LEN 46
595 extern const struct in6_addr in6addr_exact;
596 #define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
597 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } }
599 static inline bool ipv6_addr_equals(const struct in6_addr *a,
600 const struct in6_addr *b)
602 #ifdef IN6_ARE_ADDR_EQUAL
603 return IN6_ARE_ADDR_EQUAL(a, b);
605 return !memcmp(a, b, sizeof(*a));
609 static inline bool ipv6_mask_is_any(const struct in6_addr *mask) {
610 return ipv6_addr_equals(mask, &in6addr_any);
613 static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) {
614 return ipv6_addr_equals(mask, &in6addr_exact);
617 static inline bool dl_type_is_ip_any(ovs_be16 dl_type)
619 return dl_type == htons(ETH_TYPE_IP)
620 || dl_type == htons(ETH_TYPE_IPV6);
623 static inline bool is_ip_any(const struct flow *flow)
625 return dl_type_is_ip_any(flow->dl_type);
628 static inline bool is_icmpv4(const struct flow *flow)
630 return (flow->dl_type == htons(ETH_TYPE_IP)
631 && flow->nw_proto == IPPROTO_ICMP);
634 static inline bool is_icmpv6(const struct flow *flow)
636 return (flow->dl_type == htons(ETH_TYPE_IPV6)
637 && flow->nw_proto == IPPROTO_ICMPV6);
640 void format_ipv6_addr(char *addr_str, const struct in6_addr *addr);
641 void print_ipv6_addr(struct ds *string, const struct in6_addr *addr);
642 void print_ipv6_masked(struct ds *string, const struct in6_addr *addr,
643 const struct in6_addr *mask);
644 struct in6_addr ipv6_addr_bitand(const struct in6_addr *src,
645 const struct in6_addr *mask);
646 struct in6_addr ipv6_create_mask(int mask);
647 int ipv6_count_cidr_bits(const struct in6_addr *netmask);
648 bool ipv6_is_cidr(const struct in6_addr *netmask);
650 void *eth_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
651 const uint8_t eth_src[ETH_ADDR_LEN], uint16_t eth_type,
653 void *snap_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
654 const uint8_t eth_src[ETH_ADDR_LEN],
655 unsigned int oui, uint16_t snap_type, size_t size);
656 void packet_set_ipv4(struct ofpbuf *, ovs_be32 src, ovs_be32 dst, uint8_t tos,
658 void packet_set_ipv6(struct ofpbuf *, uint8_t proto, const ovs_be32 src[4],
659 const ovs_be32 dst[4], uint8_t tc,
660 ovs_be32 fl, uint8_t hlmit);
661 void packet_set_tcp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
662 void packet_set_udp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
663 void packet_set_sctp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
665 uint16_t packet_get_tcp_flags(const struct ofpbuf *, const struct flow *);
666 void packet_format_tcp_flags(struct ds *, uint16_t);
667 const char *packet_tcp_flag_to_string(uint32_t flag);
669 #endif /* packets.h */