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 union flow_in_port in_port; /* Input port. */
42 #define PKT_METADATA_INITIALIZER(PORT) \
43 (struct pkt_metadata){ { 0, 0, 0, 0, 0, 0}, 0, 0, {(PORT)} }
45 static inline struct pkt_metadata
46 pkt_metadata_from_flow(const struct flow *flow)
48 struct pkt_metadata md;
50 md.tunnel = flow->tunnel;
51 md.skb_priority = flow->skb_priority;
52 md.pkt_mark = flow->pkt_mark;
53 md.in_port = flow->in_port;
58 bool dpid_from_string(const char *s, uint64_t *dpidp);
60 #define ETH_ADDR_LEN 6
62 static const uint8_t eth_addr_broadcast[ETH_ADDR_LEN] OVS_UNUSED
63 = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
65 static const uint8_t eth_addr_stp[ETH_ADDR_LEN] OVS_UNUSED
66 = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00 };
68 static const uint8_t eth_addr_lacp[ETH_ADDR_LEN] OVS_UNUSED
69 = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 };
71 static const uint8_t eth_addr_bfd[ETH_ADDR_LEN] OVS_UNUSED
72 = { 0x00, 0x23, 0x20, 0x00, 0x00, 0x01 };
74 static inline bool eth_addr_is_broadcast(const uint8_t ea[6])
76 return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
79 static inline bool eth_addr_is_multicast(const uint8_t ea[6])
83 static inline bool eth_addr_is_local(const uint8_t ea[6])
85 /* Local if it is either a locally administered address or a Nicira random
88 || (ea[0] == 0x00 && ea[1] == 0x23 && ea[2] == 0x20 && ea[3] & 0x80);
90 static inline bool eth_addr_is_zero(const uint8_t ea[6])
92 return !(ea[0] | ea[1] | ea[2] | ea[3] | ea[4] | ea[5]);
95 static inline int eth_mask_is_exact(const uint8_t ea[ETH_ADDR_LEN])
97 return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
100 static inline int eth_addr_compare_3way(const uint8_t a[ETH_ADDR_LEN],
101 const uint8_t b[ETH_ADDR_LEN])
103 return memcmp(a, b, ETH_ADDR_LEN);
105 static inline bool eth_addr_equals(const uint8_t a[ETH_ADDR_LEN],
106 const uint8_t b[ETH_ADDR_LEN])
108 return !eth_addr_compare_3way(a, b);
110 static inline bool eth_addr_equal_except(const uint8_t a[ETH_ADDR_LEN],
111 const uint8_t b[ETH_ADDR_LEN],
112 const uint8_t mask[ETH_ADDR_LEN])
114 return !(((a[0] ^ b[0]) & mask[0])
115 || ((a[1] ^ b[1]) & mask[1])
116 || ((a[2] ^ b[2]) & mask[2])
117 || ((a[3] ^ b[3]) & mask[3])
118 || ((a[4] ^ b[4]) & mask[4])
119 || ((a[5] ^ b[5]) & mask[5]));
121 static inline uint64_t eth_addr_to_uint64(const uint8_t ea[ETH_ADDR_LEN])
123 return (((uint64_t) ea[0] << 40)
124 | ((uint64_t) ea[1] << 32)
125 | ((uint64_t) ea[2] << 24)
126 | ((uint64_t) ea[3] << 16)
127 | ((uint64_t) ea[4] << 8)
130 static inline void eth_addr_from_uint64(uint64_t x, uint8_t ea[ETH_ADDR_LEN])
139 static inline void eth_addr_mark_random(uint8_t ea[ETH_ADDR_LEN])
141 ea[0] &= ~1; /* Unicast. */
142 ea[0] |= 2; /* Private. */
144 static inline void eth_addr_random(uint8_t ea[ETH_ADDR_LEN])
146 random_bytes(ea, ETH_ADDR_LEN);
147 eth_addr_mark_random(ea);
149 static inline void eth_addr_nicira_random(uint8_t ea[ETH_ADDR_LEN])
153 /* Set the OUI to the Nicira one. */
158 /* Set the top bit to indicate random Nicira address. */
162 bool eth_addr_is_reserved(const uint8_t ea[ETH_ADDR_LEN]);
163 bool eth_addr_from_string(const char *, uint8_t ea[ETH_ADDR_LEN]);
165 void compose_rarp(struct ofpbuf *, const uint8_t eth_src[ETH_ADDR_LEN]);
167 void eth_push_vlan(struct ofpbuf *, ovs_be16 tpid, ovs_be16 tci);
168 void eth_pop_vlan(struct ofpbuf *);
170 const char *eth_from_hex(const char *hex, struct ofpbuf **packetp);
171 void eth_format_masked(const uint8_t eth[ETH_ADDR_LEN],
172 const uint8_t mask[ETH_ADDR_LEN], struct ds *s);
173 void eth_addr_bitand(const uint8_t src[ETH_ADDR_LEN],
174 const uint8_t mask[ETH_ADDR_LEN],
175 uint8_t dst[ETH_ADDR_LEN]);
177 void set_mpls_lse(struct ofpbuf *, ovs_be32 label);
178 void push_mpls(struct ofpbuf *packet, ovs_be16 ethtype, ovs_be32 lse);
179 void pop_mpls(struct ofpbuf *, ovs_be16 ethtype);
181 void set_mpls_lse_ttl(ovs_be32 *lse, uint8_t ttl);
182 void set_mpls_lse_tc(ovs_be32 *lse, uint8_t tc);
183 void set_mpls_lse_label(ovs_be32 *lse, ovs_be32 label);
184 void set_mpls_lse_bos(ovs_be32 *lse, uint8_t bos);
185 ovs_be32 set_mpls_lse_values(uint8_t ttl, uint8_t tc, uint8_t bos,
190 * uint8_t mac[ETH_ADDR_LEN];
192 * printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac));
195 #define ETH_ADDR_FMT \
196 "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
197 #define ETH_ADDR_ARGS(ea) \
198 (ea)[0], (ea)[1], (ea)[2], (ea)[3], (ea)[4], (ea)[5]
202 * char *string = "1 00:11:22:33:44:55 2";
203 * uint8_t mac[ETH_ADDR_LEN];
206 * if (ovs_scan(string, "%d"ETH_ADDR_SCAN_FMT"%d",
207 * &a, ETH_ADDR_SCAN_ARGS(mac), &b)) {
211 #define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8
212 #define ETH_ADDR_SCAN_ARGS(ea) \
213 &(ea)[0], &(ea)[1], &(ea)[2], &(ea)[3], &(ea)[4], &(ea)[5]
215 #define ETH_TYPE_IP 0x0800
216 #define ETH_TYPE_ARP 0x0806
217 #define ETH_TYPE_VLAN_8021Q 0x8100
218 #define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q
219 #define ETH_TYPE_VLAN_8021AD 0x88a8
220 #define ETH_TYPE_IPV6 0x86dd
221 #define ETH_TYPE_LACP 0x8809
222 #define ETH_TYPE_RARP 0x8035
223 #define ETH_TYPE_MPLS 0x8847
224 #define ETH_TYPE_MPLS_MCAST 0x8848
226 static inline bool eth_type_mpls(ovs_be16 eth_type)
228 return eth_type == htons(ETH_TYPE_MPLS) ||
229 eth_type == htons(ETH_TYPE_MPLS_MCAST);
232 /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame
234 #define ETH_TYPE_MIN 0x600
236 #define ETH_HEADER_LEN 14
237 #define ETH_PAYLOAD_MIN 46
238 #define ETH_PAYLOAD_MAX 1500
239 #define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN)
240 #define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX)
241 #define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX)
244 uint8_t eth_dst[ETH_ADDR_LEN];
245 uint8_t eth_src[ETH_ADDR_LEN];
248 BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header));
250 #define LLC_DSAP_SNAP 0xaa
251 #define LLC_SSAP_SNAP 0xaa
252 #define LLC_CNTL_SNAP 3
254 #define LLC_HEADER_LEN 3
261 BUILD_ASSERT_DECL(LLC_HEADER_LEN == sizeof(struct llc_header));
263 #define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so
264 sizeof(SNAP_ORG_ETHERNET) == 3. */
265 #define SNAP_HEADER_LEN 5
271 BUILD_ASSERT_DECL(SNAP_HEADER_LEN == sizeof(struct snap_header));
273 #define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN)
275 struct llc_snap_header {
276 struct llc_header llc;
277 struct snap_header snap;
279 BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header));
281 #define VLAN_VID_MASK 0x0fff
282 #define VLAN_VID_SHIFT 0
284 #define VLAN_PCP_MASK 0xe000
285 #define VLAN_PCP_SHIFT 13
287 #define VLAN_CFI 0x1000
288 #define VLAN_CFI_SHIFT 12
290 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
291 * returns the VLAN ID in host byte order. */
292 static inline uint16_t
293 vlan_tci_to_vid(ovs_be16 vlan_tci)
295 return (ntohs(vlan_tci) & VLAN_VID_MASK) >> VLAN_VID_SHIFT;
298 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
299 * returns the priority code point (PCP) in host byte order. */
301 vlan_tci_to_pcp(ovs_be16 vlan_tci)
303 return (ntohs(vlan_tci) & VLAN_PCP_MASK) >> VLAN_PCP_SHIFT;
306 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
307 * returns the Canonical Format Indicator (CFI). */
309 vlan_tci_to_cfi(ovs_be16 vlan_tci)
311 return (vlan_tci & htons(VLAN_CFI)) != 0;
314 #define VLAN_HEADER_LEN 4
316 ovs_be16 vlan_tci; /* Lowest 12 bits are VLAN ID. */
317 ovs_be16 vlan_next_type;
319 BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header));
321 #define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN)
323 struct vlan_eth_header {
324 uint8_t veth_dst[ETH_ADDR_LEN];
325 uint8_t veth_src[ETH_ADDR_LEN];
326 ovs_be16 veth_type; /* Always htons(ETH_TYPE_VLAN). */
327 ovs_be16 veth_tci; /* Lowest 12 bits are VLAN ID. */
328 ovs_be16 veth_next_type;
330 BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header));
332 /* MPLS related definitions */
333 #define MPLS_TTL_MASK 0x000000ff
334 #define MPLS_TTL_SHIFT 0
336 #define MPLS_BOS_MASK 0x00000100
337 #define MPLS_BOS_SHIFT 8
339 #define MPLS_TC_MASK 0x00000e00
340 #define MPLS_TC_SHIFT 9
342 #define MPLS_LABEL_MASK 0xfffff000
343 #define MPLS_LABEL_SHIFT 12
350 BUILD_ASSERT_DECL(MPLS_HLEN == sizeof(struct mpls_hdr));
352 /* Given a mpls label stack entry in network byte order
353 * return mpls label in host byte order */
354 static inline uint32_t
355 mpls_lse_to_label(ovs_be32 mpls_lse)
357 return (ntohl(mpls_lse) & MPLS_LABEL_MASK) >> MPLS_LABEL_SHIFT;
360 /* Given a mpls label stack entry in network byte order
362 static inline uint8_t
363 mpls_lse_to_tc(ovs_be32 mpls_lse)
365 return (ntohl(mpls_lse) & MPLS_TC_MASK) >> MPLS_TC_SHIFT;
368 /* Given a mpls label stack entry in network byte order
370 static inline uint8_t
371 mpls_lse_to_ttl(ovs_be32 mpls_lse)
373 return (ntohl(mpls_lse) & MPLS_TTL_MASK) >> MPLS_TTL_SHIFT;
376 /* Set TTL in mpls lse. */
378 flow_set_mpls_lse_ttl(ovs_be32 *mpls_lse, uint8_t ttl)
380 *mpls_lse &= ~htonl(MPLS_TTL_MASK);
381 *mpls_lse |= htonl(ttl << MPLS_TTL_SHIFT);
384 /* Given a mpls label stack entry in network byte order
385 * return mpls BoS bit */
386 static inline uint8_t
387 mpls_lse_to_bos(ovs_be32 mpls_lse)
389 return (mpls_lse & htonl(MPLS_BOS_MASK)) != 0;
392 #define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32
393 #define IP_ARGS(ip) \
395 (ntohl(ip) >> 16) & 0xff, \
396 (ntohl(ip) >> 8) & 0xff, \
401 * char *string = "1 33.44.55.66 2";
405 * if (ovs_scan(string, "%d"IP_SCAN_FMT"%d", &a, IP_SCAN_ARGS(&ip), &b)) {
409 #define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8
410 #define IP_SCAN_ARGS(ip) \
411 ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \
412 &((uint8_t *) ip)[1], \
413 &((uint8_t *) ip)[2], \
416 /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N
417 * high-order 1-bits and 32-N low-order 0-bits. */
419 ip_is_cidr(ovs_be32 netmask)
421 uint32_t x = ~ntohl(netmask);
422 return !(x & (x + 1));
425 ip_is_multicast(ovs_be32 ip)
427 return (ip & htonl(0xf0000000)) == htonl(0xe0000000);
429 int ip_count_cidr_bits(ovs_be32 netmask);
430 void ip_format_masked(ovs_be32 ip, ovs_be32 mask, struct ds *);
432 #define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4)
433 #define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15)
434 #define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl))
437 #define IPPROTO_SCTP 132
441 #define IP_ECN_NOT_ECT 0x0
442 #define IP_ECN_ECT_1 0x01
443 #define IP_ECN_ECT_0 0x02
444 #define IP_ECN_CE 0x03
445 #define IP_ECN_MASK 0x03
446 #define IP_DSCP_MASK 0xfc
450 #define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */
451 #define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */
452 #define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */
453 #define IP_IS_FRAGMENT(ip_frag_off) \
454 ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK))
456 #define IP_HEADER_LEN 20
462 ovs_be16 ip_frag_off;
466 ovs_16aligned_be32 ip_src;
467 ovs_16aligned_be32 ip_dst;
469 BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header));
471 #define ICMP_HEADER_LEN 8
485 ovs_16aligned_be32 gateway;
487 uint8_t icmp_data[0];
489 BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_header));
491 #define SCTP_HEADER_LEN 12
498 BUILD_ASSERT_DECL(SCTP_HEADER_LEN == sizeof(struct sctp_header));
500 #define UDP_HEADER_LEN 8
507 BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header));
509 #define TCP_FIN 0x001
510 #define TCP_SYN 0x002
511 #define TCP_RST 0x004
512 #define TCP_PSH 0x008
513 #define TCP_ACK 0x010
514 #define TCP_URG 0x020
515 #define TCP_ECE 0x040
516 #define TCP_CWR 0x080
519 #define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12)))
520 #define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff)
521 #define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12)
523 #define TCP_HEADER_LEN 20
527 ovs_16aligned_be32 tcp_seq;
528 ovs_16aligned_be32 tcp_ack;
534 BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header));
536 #define ARP_HRD_ETHERNET 1
537 #define ARP_PRO_IP 0x0800
538 #define ARP_OP_REQUEST 1
539 #define ARP_OP_REPLY 2
540 #define ARP_OP_RARP 3
542 #define ARP_ETH_HEADER_LEN 28
543 struct arp_eth_header {
544 /* Generic members. */
545 ovs_be16 ar_hrd; /* Hardware type. */
546 ovs_be16 ar_pro; /* Protocol type. */
547 uint8_t ar_hln; /* Hardware address length. */
548 uint8_t ar_pln; /* Protocol address length. */
549 ovs_be16 ar_op; /* Opcode. */
551 /* Ethernet+IPv4 specific members. */
552 uint8_t ar_sha[ETH_ADDR_LEN]; /* Sender hardware address. */
553 ovs_16aligned_be32 ar_spa; /* Sender protocol address. */
554 uint8_t ar_tha[ETH_ADDR_LEN]; /* Target hardware address. */
555 ovs_16aligned_be32 ar_tpa; /* Target protocol address. */
557 BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header));
559 /* Like struct in6_addr, but whereas that struct requires 32-bit alignment on
560 * most implementations, this one only requires 16-bit alignment. */
561 union ovs_16aligned_in6_addr {
563 ovs_16aligned_be32 be32[4];
566 /* Like struct in6_hdr, but whereas that struct requires 32-bit alignment, this
567 * one only requires 16-bit alignment. */
568 struct ovs_16aligned_ip6_hdr {
570 struct ovs_16aligned_ip6_hdrctl {
571 ovs_16aligned_be32 ip6_un1_flow;
572 ovs_be16 ip6_un1_plen;
574 uint8_t ip6_un1_hlim;
578 union ovs_16aligned_in6_addr ip6_src;
579 union ovs_16aligned_in6_addr ip6_dst;
582 /* Like struct in6_frag, but whereas that struct requires 32-bit alignment,
583 * this one only requires 16-bit alignment. */
584 struct ovs_16aligned_ip6_frag {
586 uint8_t ip6f_reserved;
588 ovs_16aligned_be32 ip6f_ident;
591 /* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */
592 #define IPV6_LABEL_MASK 0x000fffff
596 * char *string = "1 ::1 2";
597 * char ipv6_s[IPV6_SCAN_LEN + 1];
598 * struct in6_addr ipv6;
600 * if (ovs_scan(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b)
601 * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
605 #define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]"
606 #define IPV6_SCAN_LEN 46
608 extern const struct in6_addr in6addr_exact;
609 #define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
610 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } }
612 static inline bool ipv6_addr_equals(const struct in6_addr *a,
613 const struct in6_addr *b)
615 #ifdef IN6_ARE_ADDR_EQUAL
616 return IN6_ARE_ADDR_EQUAL(a, b);
618 return !memcmp(a, b, sizeof(*a));
622 static inline bool ipv6_mask_is_any(const struct in6_addr *mask) {
623 return ipv6_addr_equals(mask, &in6addr_any);
626 static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) {
627 return ipv6_addr_equals(mask, &in6addr_exact);
630 static inline bool dl_type_is_ip_any(ovs_be16 dl_type)
632 return dl_type == htons(ETH_TYPE_IP)
633 || dl_type == htons(ETH_TYPE_IPV6);
636 static inline bool is_ip_any(const struct flow *flow)
638 return dl_type_is_ip_any(flow->dl_type);
641 static inline bool is_icmpv4(const struct flow *flow)
643 return (flow->dl_type == htons(ETH_TYPE_IP)
644 && flow->nw_proto == IPPROTO_ICMP);
647 static inline bool is_icmpv6(const struct flow *flow)
649 return (flow->dl_type == htons(ETH_TYPE_IPV6)
650 && flow->nw_proto == IPPROTO_ICMPV6);
653 void format_ipv6_addr(char *addr_str, const struct in6_addr *addr);
654 void print_ipv6_addr(struct ds *string, const struct in6_addr *addr);
655 void print_ipv6_masked(struct ds *string, const struct in6_addr *addr,
656 const struct in6_addr *mask);
657 struct in6_addr ipv6_addr_bitand(const struct in6_addr *src,
658 const struct in6_addr *mask);
659 struct in6_addr ipv6_create_mask(int mask);
660 int ipv6_count_cidr_bits(const struct in6_addr *netmask);
661 bool ipv6_is_cidr(const struct in6_addr *netmask);
663 void *eth_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
664 const uint8_t eth_src[ETH_ADDR_LEN], uint16_t eth_type,
666 void *snap_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
667 const uint8_t eth_src[ETH_ADDR_LEN],
668 unsigned int oui, uint16_t snap_type, size_t size);
669 void packet_set_ipv4(struct ofpbuf *, ovs_be32 src, ovs_be32 dst, uint8_t tos,
671 void packet_set_ipv6(struct ofpbuf *, uint8_t proto, const ovs_be32 src[4],
672 const ovs_be32 dst[4], uint8_t tc,
673 ovs_be32 fl, uint8_t hlmit);
674 void packet_set_tcp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
675 void packet_set_udp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
676 void packet_set_sctp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
678 void packet_format_tcp_flags(struct ds *, uint16_t);
679 const char *packet_tcp_flag_to_string(uint32_t flag);
681 #endif /* packets.h */