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 void pkt_metadata_init(struct pkt_metadata *md, const struct flow_tnl *tnl,
46 const uint32_t skb_priority,
47 const uint32_t pkt_mark,
48 const union flow_in_port *in_port);
49 void pkt_metadata_from_flow(struct pkt_metadata *md, const struct flow *flow);
51 bool dpid_from_string(const char *s, uint64_t *dpidp);
53 #define ETH_ADDR_LEN 6
55 static const uint8_t eth_addr_broadcast[ETH_ADDR_LEN] OVS_UNUSED
56 = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
58 static const uint8_t eth_addr_stp[ETH_ADDR_LEN] OVS_UNUSED
59 = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00 };
61 static const uint8_t eth_addr_lacp[ETH_ADDR_LEN] OVS_UNUSED
62 = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 };
64 static const uint8_t eth_addr_bfd[ETH_ADDR_LEN] OVS_UNUSED
65 = { 0x00, 0x23, 0x20, 0x00, 0x00, 0x01 };
67 static inline bool eth_addr_is_broadcast(const uint8_t ea[6])
69 return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
72 static inline bool eth_addr_is_multicast(const uint8_t ea[6])
76 static inline bool eth_addr_is_local(const uint8_t ea[6])
78 /* Local if it is either a locally administered address or a Nicira random
81 || (ea[0] == 0x00 && ea[1] == 0x23 && ea[2] == 0x20 && ea[3] & 0x80);
83 static inline bool eth_addr_is_zero(const uint8_t ea[6])
85 return !(ea[0] | ea[1] | ea[2] | ea[3] | ea[4] | ea[5]);
88 static inline int eth_mask_is_exact(const uint8_t ea[ETH_ADDR_LEN])
90 return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
93 static inline int eth_addr_compare_3way(const uint8_t a[ETH_ADDR_LEN],
94 const uint8_t b[ETH_ADDR_LEN])
96 return memcmp(a, b, ETH_ADDR_LEN);
98 static inline bool eth_addr_equals(const uint8_t a[ETH_ADDR_LEN],
99 const uint8_t b[ETH_ADDR_LEN])
101 return !eth_addr_compare_3way(a, b);
103 static inline bool eth_addr_equal_except(const uint8_t a[ETH_ADDR_LEN],
104 const uint8_t b[ETH_ADDR_LEN],
105 const uint8_t mask[ETH_ADDR_LEN])
107 return !(((a[0] ^ b[0]) & mask[0])
108 || ((a[1] ^ b[1]) & mask[1])
109 || ((a[2] ^ b[2]) & mask[2])
110 || ((a[3] ^ b[3]) & mask[3])
111 || ((a[4] ^ b[4]) & mask[4])
112 || ((a[5] ^ b[5]) & mask[5]));
114 static inline uint64_t eth_addr_to_uint64(const uint8_t ea[ETH_ADDR_LEN])
116 return (((uint64_t) ea[0] << 40)
117 | ((uint64_t) ea[1] << 32)
118 | ((uint64_t) ea[2] << 24)
119 | ((uint64_t) ea[3] << 16)
120 | ((uint64_t) ea[4] << 8)
123 static inline void eth_addr_from_uint64(uint64_t x, uint8_t ea[ETH_ADDR_LEN])
132 static inline void eth_addr_mark_random(uint8_t ea[ETH_ADDR_LEN])
134 ea[0] &= ~1; /* Unicast. */
135 ea[0] |= 2; /* Private. */
137 static inline void eth_addr_random(uint8_t ea[ETH_ADDR_LEN])
139 random_bytes(ea, ETH_ADDR_LEN);
140 eth_addr_mark_random(ea);
142 static inline void eth_addr_nicira_random(uint8_t ea[ETH_ADDR_LEN])
146 /* Set the OUI to the Nicira one. */
151 /* Set the top bit to indicate random Nicira address. */
155 bool eth_addr_is_reserved(const uint8_t ea[ETH_ADDR_LEN]);
156 bool eth_addr_from_string(const char *, uint8_t ea[ETH_ADDR_LEN]);
158 void compose_rarp(struct ofpbuf *, const uint8_t eth_src[ETH_ADDR_LEN]);
160 void eth_push_vlan(struct ofpbuf *, ovs_be16 tpid, ovs_be16 tci);
161 void eth_pop_vlan(struct ofpbuf *);
163 const char *eth_from_hex(const char *hex, struct ofpbuf **packetp);
164 void eth_format_masked(const uint8_t eth[ETH_ADDR_LEN],
165 const uint8_t mask[ETH_ADDR_LEN], struct ds *s);
166 void eth_addr_bitand(const uint8_t src[ETH_ADDR_LEN],
167 const uint8_t mask[ETH_ADDR_LEN],
168 uint8_t dst[ETH_ADDR_LEN]);
170 void set_mpls_lse(struct ofpbuf *, ovs_be32 label);
171 void push_mpls(struct ofpbuf *packet, ovs_be16 ethtype, ovs_be32 lse);
172 void pop_mpls(struct ofpbuf *, ovs_be16 ethtype);
174 void set_mpls_lse_ttl(ovs_be32 *lse, uint8_t ttl);
175 void set_mpls_lse_tc(ovs_be32 *lse, uint8_t tc);
176 void set_mpls_lse_label(ovs_be32 *lse, ovs_be32 label);
177 void set_mpls_lse_bos(ovs_be32 *lse, uint8_t bos);
178 ovs_be32 set_mpls_lse_values(uint8_t ttl, uint8_t tc, uint8_t bos,
183 * uint8_t mac[ETH_ADDR_LEN];
185 * printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac));
188 #define ETH_ADDR_FMT \
189 "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
190 #define ETH_ADDR_ARGS(ea) \
191 (ea)[0], (ea)[1], (ea)[2], (ea)[3], (ea)[4], (ea)[5]
195 * char *string = "1 00:11:22:33:44:55 2";
196 * uint8_t mac[ETH_ADDR_LEN];
199 * if (ovs_scan(string, "%d"ETH_ADDR_SCAN_FMT"%d",
200 * &a, ETH_ADDR_SCAN_ARGS(mac), &b)) {
204 #define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8
205 #define ETH_ADDR_SCAN_ARGS(ea) \
206 &(ea)[0], &(ea)[1], &(ea)[2], &(ea)[3], &(ea)[4], &(ea)[5]
208 #define ETH_TYPE_IP 0x0800
209 #define ETH_TYPE_ARP 0x0806
210 #define ETH_TYPE_VLAN_8021Q 0x8100
211 #define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q
212 #define ETH_TYPE_VLAN_8021AD 0x88a8
213 #define ETH_TYPE_IPV6 0x86dd
214 #define ETH_TYPE_LACP 0x8809
215 #define ETH_TYPE_RARP 0x8035
216 #define ETH_TYPE_MPLS 0x8847
217 #define ETH_TYPE_MPLS_MCAST 0x8848
219 static inline bool eth_type_mpls(ovs_be16 eth_type)
221 return eth_type == htons(ETH_TYPE_MPLS) ||
222 eth_type == htons(ETH_TYPE_MPLS_MCAST);
225 /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame
227 #define ETH_TYPE_MIN 0x600
229 #define ETH_HEADER_LEN 14
230 #define ETH_PAYLOAD_MIN 46
231 #define ETH_PAYLOAD_MAX 1500
232 #define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN)
233 #define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX)
234 #define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX)
237 uint8_t eth_dst[ETH_ADDR_LEN];
238 uint8_t eth_src[ETH_ADDR_LEN];
241 BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header));
243 #define LLC_DSAP_SNAP 0xaa
244 #define LLC_SSAP_SNAP 0xaa
245 #define LLC_CNTL_SNAP 3
247 #define LLC_HEADER_LEN 3
254 BUILD_ASSERT_DECL(LLC_HEADER_LEN == sizeof(struct llc_header));
256 #define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so
257 sizeof(SNAP_ORG_ETHERNET) == 3. */
258 #define SNAP_HEADER_LEN 5
264 BUILD_ASSERT_DECL(SNAP_HEADER_LEN == sizeof(struct snap_header));
266 #define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN)
268 struct llc_snap_header {
269 struct llc_header llc;
270 struct snap_header snap;
272 BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header));
274 #define VLAN_VID_MASK 0x0fff
275 #define VLAN_VID_SHIFT 0
277 #define VLAN_PCP_MASK 0xe000
278 #define VLAN_PCP_SHIFT 13
280 #define VLAN_CFI 0x1000
281 #define VLAN_CFI_SHIFT 12
283 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
284 * returns the VLAN ID in host byte order. */
285 static inline uint16_t
286 vlan_tci_to_vid(ovs_be16 vlan_tci)
288 return (ntohs(vlan_tci) & VLAN_VID_MASK) >> VLAN_VID_SHIFT;
291 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
292 * returns the priority code point (PCP) in host byte order. */
294 vlan_tci_to_pcp(ovs_be16 vlan_tci)
296 return (ntohs(vlan_tci) & VLAN_PCP_MASK) >> VLAN_PCP_SHIFT;
299 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
300 * returns the Canonical Format Indicator (CFI). */
302 vlan_tci_to_cfi(ovs_be16 vlan_tci)
304 return (vlan_tci & htons(VLAN_CFI)) != 0;
307 #define VLAN_HEADER_LEN 4
309 ovs_be16 vlan_tci; /* Lowest 12 bits are VLAN ID. */
310 ovs_be16 vlan_next_type;
312 BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header));
314 #define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN)
316 struct vlan_eth_header {
317 uint8_t veth_dst[ETH_ADDR_LEN];
318 uint8_t veth_src[ETH_ADDR_LEN];
319 ovs_be16 veth_type; /* Always htons(ETH_TYPE_VLAN). */
320 ovs_be16 veth_tci; /* Lowest 12 bits are VLAN ID. */
321 ovs_be16 veth_next_type;
323 BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header));
325 /* MPLS related definitions */
326 #define MPLS_TTL_MASK 0x000000ff
327 #define MPLS_TTL_SHIFT 0
329 #define MPLS_BOS_MASK 0x00000100
330 #define MPLS_BOS_SHIFT 8
332 #define MPLS_TC_MASK 0x00000e00
333 #define MPLS_TC_SHIFT 9
335 #define MPLS_LABEL_MASK 0xfffff000
336 #define MPLS_LABEL_SHIFT 12
343 BUILD_ASSERT_DECL(MPLS_HLEN == sizeof(struct mpls_hdr));
345 /* Given a mpls label stack entry in network byte order
346 * return mpls label in host byte order */
347 static inline uint32_t
348 mpls_lse_to_label(ovs_be32 mpls_lse)
350 return (ntohl(mpls_lse) & MPLS_LABEL_MASK) >> MPLS_LABEL_SHIFT;
353 /* Given a mpls label stack entry in network byte order
355 static inline uint8_t
356 mpls_lse_to_tc(ovs_be32 mpls_lse)
358 return (ntohl(mpls_lse) & MPLS_TC_MASK) >> MPLS_TC_SHIFT;
361 /* Given a mpls label stack entry in network byte order
363 static inline uint8_t
364 mpls_lse_to_ttl(ovs_be32 mpls_lse)
366 return (ntohl(mpls_lse) & MPLS_TTL_MASK) >> MPLS_TTL_SHIFT;
369 /* Set TTL in mpls lse. */
371 flow_set_mpls_lse_ttl(ovs_be32 *mpls_lse, uint8_t ttl)
373 *mpls_lse &= ~htonl(MPLS_TTL_MASK);
374 *mpls_lse |= htonl(ttl << MPLS_TTL_SHIFT);
377 /* Given a mpls label stack entry in network byte order
378 * return mpls BoS bit */
379 static inline uint8_t
380 mpls_lse_to_bos(ovs_be32 mpls_lse)
382 return (mpls_lse & htonl(MPLS_BOS_MASK)) != 0;
385 #define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32
386 #define IP_ARGS(ip) \
388 (ntohl(ip) >> 16) & 0xff, \
389 (ntohl(ip) >> 8) & 0xff, \
394 * char *string = "1 33.44.55.66 2";
398 * if (ovs_scan(string, "%d"IP_SCAN_FMT"%d", &a, IP_SCAN_ARGS(&ip), &b)) {
402 #define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8
403 #define IP_SCAN_ARGS(ip) \
404 ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \
405 &((uint8_t *) ip)[1], \
406 &((uint8_t *) ip)[2], \
409 /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N
410 * high-order 1-bits and 32-N low-order 0-bits. */
412 ip_is_cidr(ovs_be32 netmask)
414 uint32_t x = ~ntohl(netmask);
415 return !(x & (x + 1));
418 ip_is_multicast(ovs_be32 ip)
420 return (ip & htonl(0xf0000000)) == htonl(0xe0000000);
422 int ip_count_cidr_bits(ovs_be32 netmask);
423 void ip_format_masked(ovs_be32 ip, ovs_be32 mask, struct ds *);
425 #define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4)
426 #define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15)
427 #define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl))
430 #define IPPROTO_SCTP 132
434 #define IP_ECN_NOT_ECT 0x0
435 #define IP_ECN_ECT_1 0x01
436 #define IP_ECN_ECT_0 0x02
437 #define IP_ECN_CE 0x03
438 #define IP_ECN_MASK 0x03
439 #define IP_DSCP_MASK 0xfc
443 #define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */
444 #define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */
445 #define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */
446 #define IP_IS_FRAGMENT(ip_frag_off) \
447 ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK))
449 #define IP_HEADER_LEN 20
455 ovs_be16 ip_frag_off;
459 ovs_16aligned_be32 ip_src;
460 ovs_16aligned_be32 ip_dst;
462 BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header));
464 #define ICMP_HEADER_LEN 8
478 ovs_16aligned_be32 gateway;
480 uint8_t icmp_data[0];
482 BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_header));
484 #define SCTP_HEADER_LEN 12
491 BUILD_ASSERT_DECL(SCTP_HEADER_LEN == sizeof(struct sctp_header));
493 #define UDP_HEADER_LEN 8
500 BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header));
502 #define TCP_FIN 0x001
503 #define TCP_SYN 0x002
504 #define TCP_RST 0x004
505 #define TCP_PSH 0x008
506 #define TCP_ACK 0x010
507 #define TCP_URG 0x020
508 #define TCP_ECE 0x040
509 #define TCP_CWR 0x080
512 #define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12)))
513 #define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff)
514 #define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12)
516 #define TCP_HEADER_LEN 20
520 ovs_16aligned_be32 tcp_seq;
521 ovs_16aligned_be32 tcp_ack;
527 BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header));
529 #define ARP_HRD_ETHERNET 1
530 #define ARP_PRO_IP 0x0800
531 #define ARP_OP_REQUEST 1
532 #define ARP_OP_REPLY 2
533 #define ARP_OP_RARP 3
535 #define ARP_ETH_HEADER_LEN 28
536 struct arp_eth_header {
537 /* Generic members. */
538 ovs_be16 ar_hrd; /* Hardware type. */
539 ovs_be16 ar_pro; /* Protocol type. */
540 uint8_t ar_hln; /* Hardware address length. */
541 uint8_t ar_pln; /* Protocol address length. */
542 ovs_be16 ar_op; /* Opcode. */
544 /* Ethernet+IPv4 specific members. */
545 uint8_t ar_sha[ETH_ADDR_LEN]; /* Sender hardware address. */
546 ovs_16aligned_be32 ar_spa; /* Sender protocol address. */
547 uint8_t ar_tha[ETH_ADDR_LEN]; /* Target hardware address. */
548 ovs_16aligned_be32 ar_tpa; /* Target protocol address. */
550 BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header));
552 /* Like struct in6_addr, but whereas that struct requires 32-bit alignment on
553 * most implementations, this one only requires 16-bit alignment. */
554 union ovs_16aligned_in6_addr {
556 ovs_16aligned_be32 be32[4];
559 /* Like struct in6_hdr, but whereas that struct requires 32-bit alignment, this
560 * one only requires 16-bit alignment. */
561 struct ovs_16aligned_ip6_hdr {
563 struct ovs_16aligned_ip6_hdrctl {
564 ovs_16aligned_be32 ip6_un1_flow;
565 ovs_be16 ip6_un1_plen;
567 uint8_t ip6_un1_hlim;
571 union ovs_16aligned_in6_addr ip6_src;
572 union ovs_16aligned_in6_addr ip6_dst;
575 /* Like struct in6_frag, but whereas that struct requires 32-bit alignment,
576 * this one only requires 16-bit alignment. */
577 struct ovs_16aligned_ip6_frag {
579 uint8_t ip6f_reserved;
581 ovs_16aligned_be32 ip6f_ident;
584 /* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */
585 #define IPV6_LABEL_MASK 0x000fffff
589 * char *string = "1 ::1 2";
590 * char ipv6_s[IPV6_SCAN_LEN + 1];
591 * struct in6_addr ipv6;
593 * if (ovs_scan(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b)
594 * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
598 #define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]"
599 #define IPV6_SCAN_LEN 46
601 extern const struct in6_addr in6addr_exact;
602 #define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
603 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } }
605 static inline bool ipv6_addr_equals(const struct in6_addr *a,
606 const struct in6_addr *b)
608 #ifdef IN6_ARE_ADDR_EQUAL
609 return IN6_ARE_ADDR_EQUAL(a, b);
611 return !memcmp(a, b, sizeof(*a));
615 static inline bool ipv6_mask_is_any(const struct in6_addr *mask) {
616 return ipv6_addr_equals(mask, &in6addr_any);
619 static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) {
620 return ipv6_addr_equals(mask, &in6addr_exact);
623 static inline bool dl_type_is_ip_any(ovs_be16 dl_type)
625 return dl_type == htons(ETH_TYPE_IP)
626 || dl_type == htons(ETH_TYPE_IPV6);
629 static inline bool is_ip_any(const struct flow *flow)
631 return dl_type_is_ip_any(flow->dl_type);
634 static inline bool is_icmpv4(const struct flow *flow)
636 return (flow->dl_type == htons(ETH_TYPE_IP)
637 && flow->nw_proto == IPPROTO_ICMP);
640 static inline bool is_icmpv6(const struct flow *flow)
642 return (flow->dl_type == htons(ETH_TYPE_IPV6)
643 && flow->nw_proto == IPPROTO_ICMPV6);
646 void format_ipv6_addr(char *addr_str, const struct in6_addr *addr);
647 void print_ipv6_addr(struct ds *string, const struct in6_addr *addr);
648 void print_ipv6_masked(struct ds *string, const struct in6_addr *addr,
649 const struct in6_addr *mask);
650 struct in6_addr ipv6_addr_bitand(const struct in6_addr *src,
651 const struct in6_addr *mask);
652 struct in6_addr ipv6_create_mask(int mask);
653 int ipv6_count_cidr_bits(const struct in6_addr *netmask);
654 bool ipv6_is_cidr(const struct in6_addr *netmask);
656 void *eth_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
657 const uint8_t eth_src[ETH_ADDR_LEN], uint16_t eth_type,
659 void *snap_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
660 const uint8_t eth_src[ETH_ADDR_LEN],
661 unsigned int oui, uint16_t snap_type, size_t size);
662 void packet_set_ipv4(struct ofpbuf *, ovs_be32 src, ovs_be32 dst, uint8_t tos,
664 void packet_set_ipv6(struct ofpbuf *, uint8_t proto, const ovs_be32 src[4],
665 const ovs_be32 dst[4], uint8_t tc,
666 ovs_be32 fl, uint8_t hlmit);
667 void packet_set_tcp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
668 void packet_set_udp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
669 void packet_set_sctp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
671 uint16_t packet_get_tcp_flags(const struct ofpbuf *, const struct flow *);
672 void packet_format_tcp_flags(struct ds *, uint16_t);
673 const char *packet_tcp_flag_to_string(uint32_t flag);
675 #endif /* packets.h */