2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 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 bool dpid_from_string(const char *s
, uint64_t *dpidp
);
36 #define ETH_ADDR_LEN 6
38 static const uint8_t eth_addr_broadcast
[ETH_ADDR_LEN
] OVS_UNUSED
39 = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
41 static const uint8_t eth_addr_stp
[ETH_ADDR_LEN
] OVS_UNUSED
42 = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00 };
44 static const uint8_t eth_addr_lacp
[ETH_ADDR_LEN
] OVS_UNUSED
45 = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 };
47 static const uint8_t eth_addr_bfd
[ETH_ADDR_LEN
] OVS_UNUSED
48 = { 0x00, 0x23, 0x20, 0x00, 0x00, 0x01 };
50 static inline bool eth_addr_is_broadcast(const uint8_t ea
[6])
52 return (ea
[0] & ea
[1] & ea
[2] & ea
[3] & ea
[4] & ea
[5]) == 0xff;
55 static inline bool eth_addr_is_multicast(const uint8_t ea
[6])
59 static inline bool eth_addr_is_local(const uint8_t ea
[6])
61 /* Local if it is either a locally administered address or a Nicira random
64 || (ea
[0] == 0x00 && ea
[1] == 0x23 && ea
[2] == 0x20 && ea
[3] & 0x80);
66 static inline bool eth_addr_is_zero(const uint8_t ea
[6])
68 return !(ea
[0] | ea
[1] | ea
[2] | ea
[3] | ea
[4] | ea
[5]);
71 static inline int eth_mask_is_exact(const uint8_t ea
[ETH_ADDR_LEN
])
73 return (ea
[0] & ea
[1] & ea
[2] & ea
[3] & ea
[4] & ea
[5]) == 0xff;
76 static inline int eth_addr_compare_3way(const uint8_t a
[ETH_ADDR_LEN
],
77 const uint8_t b
[ETH_ADDR_LEN
])
79 return memcmp(a
, b
, ETH_ADDR_LEN
);
81 static inline bool eth_addr_equals(const uint8_t a
[ETH_ADDR_LEN
],
82 const uint8_t b
[ETH_ADDR_LEN
])
84 return !eth_addr_compare_3way(a
, b
);
86 static inline bool eth_addr_equal_except(const uint8_t a
[ETH_ADDR_LEN
],
87 const uint8_t b
[ETH_ADDR_LEN
],
88 const uint8_t mask
[ETH_ADDR_LEN
])
90 return !(((a
[0] ^ b
[0]) & mask
[0])
91 || ((a
[1] ^ b
[1]) & mask
[1])
92 || ((a
[2] ^ b
[2]) & mask
[2])
93 || ((a
[3] ^ b
[3]) & mask
[3])
94 || ((a
[4] ^ b
[4]) & mask
[4])
95 || ((a
[5] ^ b
[5]) & mask
[5]));
97 static inline uint64_t eth_addr_to_uint64(const uint8_t ea
[ETH_ADDR_LEN
])
99 return (((uint64_t) ea
[0] << 40)
100 | ((uint64_t) ea
[1] << 32)
101 | ((uint64_t) ea
[2] << 24)
102 | ((uint64_t) ea
[3] << 16)
103 | ((uint64_t) ea
[4] << 8)
106 static inline void eth_addr_from_uint64(uint64_t x
, uint8_t ea
[ETH_ADDR_LEN
])
115 static inline void eth_addr_mark_random(uint8_t ea
[ETH_ADDR_LEN
])
117 ea
[0] &= ~1; /* Unicast. */
118 ea
[0] |= 2; /* Private. */
120 static inline void eth_addr_random(uint8_t ea
[ETH_ADDR_LEN
])
122 random_bytes(ea
, ETH_ADDR_LEN
);
123 eth_addr_mark_random(ea
);
125 static inline void eth_addr_nicira_random(uint8_t ea
[ETH_ADDR_LEN
])
129 /* Set the OUI to the Nicira one. */
134 /* Set the top bit to indicate random Nicira address. */
138 bool eth_addr_is_reserved(const uint8_t ea
[ETH_ADDR_LEN
]);
139 bool eth_addr_from_string(const char *, uint8_t ea
[ETH_ADDR_LEN
]);
141 void compose_rarp(struct ofpbuf
*, const uint8_t eth_src
[ETH_ADDR_LEN
]);
143 void eth_push_vlan(struct ofpbuf
*, ovs_be16 tci
);
144 void eth_pop_vlan(struct ofpbuf
*);
146 void set_ethertype(struct ofpbuf
*packet
, ovs_be16 eth_type
);
148 const char *eth_from_hex(const char *hex
, struct ofpbuf
**packetp
);
149 void eth_format_masked(const uint8_t eth
[ETH_ADDR_LEN
],
150 const uint8_t mask
[ETH_ADDR_LEN
], struct ds
*s
);
151 void eth_addr_bitand(const uint8_t src
[ETH_ADDR_LEN
],
152 const uint8_t mask
[ETH_ADDR_LEN
],
153 uint8_t dst
[ETH_ADDR_LEN
]);
155 void set_mpls_lse(struct ofpbuf
*, ovs_be32 label
);
156 void push_mpls(struct ofpbuf
*packet
, ovs_be16 ethtype
, ovs_be32 lse
);
157 void pop_mpls(struct ofpbuf
*, ovs_be16 ethtype
);
159 void set_mpls_lse_ttl(ovs_be32
*lse
, uint8_t ttl
);
160 void set_mpls_lse_tc(ovs_be32
*lse
, uint8_t tc
);
161 void set_mpls_lse_label(ovs_be32
*lse
, ovs_be32 label
);
162 void set_mpls_lse_bos(ovs_be32
*lse
, uint8_t bos
);
163 ovs_be32
set_mpls_lse_values(uint8_t ttl
, uint8_t tc
, uint8_t bos
,
168 * uint8_t mac[ETH_ADDR_LEN];
170 * printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac));
173 #define ETH_ADDR_FMT \
174 "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
175 #define ETH_ADDR_ARGS(ea) \
176 (ea)[0], (ea)[1], (ea)[2], (ea)[3], (ea)[4], (ea)[5]
180 * char *string = "1 00:11:22:33:44:55 2";
181 * uint8_t mac[ETH_ADDR_LEN];
184 * if (sscanf(string, "%d"ETH_ADDR_SCAN_FMT"%d",
185 * &a, ETH_ADDR_SCAN_ARGS(mac), &b) == 1 + ETH_ADDR_SCAN_COUNT + 1) {
189 #define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8
190 #define ETH_ADDR_SCAN_ARGS(ea) \
191 &(ea)[0], &(ea)[1], &(ea)[2], &(ea)[3], &(ea)[4], &(ea)[5]
192 #define ETH_ADDR_SCAN_COUNT 6
194 #define ETH_TYPE_IP 0x0800
195 #define ETH_TYPE_ARP 0x0806
196 #define ETH_TYPE_VLAN_8021Q 0x8100
197 #define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q
198 #define ETH_TYPE_VLAN_8021AD 0x88a8
199 #define ETH_TYPE_IPV6 0x86dd
200 #define ETH_TYPE_LACP 0x8809
201 #define ETH_TYPE_RARP 0x8035
202 #define ETH_TYPE_MPLS 0x8847
203 #define ETH_TYPE_MPLS_MCAST 0x8848
205 static inline bool eth_type_mpls(ovs_be16 eth_type
)
207 return eth_type
== htons(ETH_TYPE_MPLS
) ||
208 eth_type
== htons(ETH_TYPE_MPLS_MCAST
);
211 /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame
213 #define ETH_TYPE_MIN 0x600
215 #define ETH_HEADER_LEN 14
216 #define ETH_PAYLOAD_MIN 46
217 #define ETH_PAYLOAD_MAX 1500
218 #define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN)
219 #define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX)
220 #define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX)
223 uint8_t eth_dst
[ETH_ADDR_LEN
];
224 uint8_t eth_src
[ETH_ADDR_LEN
];
227 BUILD_ASSERT_DECL(ETH_HEADER_LEN
== sizeof(struct eth_header
));
229 #define LLC_DSAP_SNAP 0xaa
230 #define LLC_SSAP_SNAP 0xaa
231 #define LLC_CNTL_SNAP 3
233 #define LLC_HEADER_LEN 3
240 BUILD_ASSERT_DECL(LLC_HEADER_LEN
== sizeof(struct llc_header
));
242 #define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so
243 sizeof(SNAP_ORG_ETHERNET) == 3. */
244 #define SNAP_HEADER_LEN 5
250 BUILD_ASSERT_DECL(SNAP_HEADER_LEN
== sizeof(struct snap_header
));
252 #define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN)
254 struct llc_snap_header
{
255 struct llc_header llc
;
256 struct snap_header snap
;
258 BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN
== sizeof(struct llc_snap_header
));
260 #define VLAN_VID_MASK 0x0fff
261 #define VLAN_VID_SHIFT 0
263 #define VLAN_PCP_MASK 0xe000
264 #define VLAN_PCP_SHIFT 13
266 #define VLAN_CFI 0x1000
267 #define VLAN_CFI_SHIFT 12
269 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
270 * returns the VLAN ID in host byte order. */
271 static inline uint16_t
272 vlan_tci_to_vid(ovs_be16 vlan_tci
)
274 return (ntohs(vlan_tci
) & VLAN_VID_MASK
) >> VLAN_VID_SHIFT
;
277 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
278 * returns the priority code point (PCP) in host byte order. */
280 vlan_tci_to_pcp(ovs_be16 vlan_tci
)
282 return (ntohs(vlan_tci
) & VLAN_PCP_MASK
) >> VLAN_PCP_SHIFT
;
285 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
286 * returns the Canonical Format Indicator (CFI). */
288 vlan_tci_to_cfi(ovs_be16 vlan_tci
)
290 return (vlan_tci
& htons(VLAN_CFI
)) != 0;
293 #define VLAN_HEADER_LEN 4
295 ovs_be16 vlan_tci
; /* Lowest 12 bits are VLAN ID. */
296 ovs_be16 vlan_next_type
;
298 BUILD_ASSERT_DECL(VLAN_HEADER_LEN
== sizeof(struct vlan_header
));
300 #define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN)
302 struct vlan_eth_header
{
303 uint8_t veth_dst
[ETH_ADDR_LEN
];
304 uint8_t veth_src
[ETH_ADDR_LEN
];
305 ovs_be16 veth_type
; /* Always htons(ETH_TYPE_VLAN). */
306 ovs_be16 veth_tci
; /* Lowest 12 bits are VLAN ID. */
307 ovs_be16 veth_next_type
;
309 BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN
== sizeof(struct vlan_eth_header
));
311 /* MPLS related definitions */
312 #define MPLS_TTL_MASK 0x000000ff
313 #define MPLS_TTL_SHIFT 0
315 #define MPLS_BOS_MASK 0x00000100
316 #define MPLS_BOS_SHIFT 8
318 #define MPLS_TC_MASK 0x00000e00
319 #define MPLS_TC_SHIFT 9
321 #define MPLS_LABEL_MASK 0xfffff000
322 #define MPLS_LABEL_SHIFT 12
329 BUILD_ASSERT_DECL(MPLS_HLEN
== sizeof(struct mpls_hdr
));
331 /* Given a mpls label stack entry in network byte order
332 * return mpls label in host byte order */
333 static inline uint32_t
334 mpls_lse_to_label(ovs_be32 mpls_lse
)
336 return (ntohl(mpls_lse
) & MPLS_LABEL_MASK
) >> MPLS_LABEL_SHIFT
;
339 /* Given a mpls label stack entry in network byte order
341 static inline uint8_t
342 mpls_lse_to_tc(ovs_be32 mpls_lse
)
344 return (ntohl(mpls_lse
) & MPLS_TC_MASK
) >> MPLS_TC_SHIFT
;
347 /* Given a mpls label stack entry in network byte order
349 static inline uint8_t
350 mpls_lse_to_ttl(ovs_be32 mpls_lse
)
352 return (ntohl(mpls_lse
) & MPLS_TTL_MASK
) >> MPLS_TTL_SHIFT
;
355 /* Set TTL in mpls lse. */
357 flow_set_mpls_lse_ttl(ovs_be32
*mpls_lse
, uint8_t ttl
)
359 *mpls_lse
&= ~htonl(MPLS_TTL_MASK
);
360 *mpls_lse
|= htonl(ttl
<< MPLS_TTL_SHIFT
);
363 /* Given a mpls label stack entry in network byte order
364 * return mpls BoS bit */
365 static inline uint8_t
366 mpls_lse_to_bos(ovs_be32 mpls_lse
)
368 return (mpls_lse
& htonl(MPLS_BOS_MASK
)) != 0;
371 #define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32
372 #define IP_ARGS(ip) \
374 (ntohl(ip) >> 16) & 0xff, \
375 (ntohl(ip) >> 8) & 0xff, \
380 * char *string = "1 33.44.55.66 2";
384 * if (sscanf(string, "%d"IP_SCAN_FMT"%d",
385 * &a, IP_SCAN_ARGS(&ip), &b) == 1 + IP_SCAN_COUNT + 1) {
389 #define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8
390 #define IP_SCAN_ARGS(ip) \
391 ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \
392 &((uint8_t *) ip)[1], \
393 &((uint8_t *) ip)[2], \
395 #define IP_SCAN_COUNT 4
397 /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N
398 * high-order 1-bits and 32-N low-order 0-bits. */
400 ip_is_cidr(ovs_be32 netmask
)
402 uint32_t x
= ~ntohl(netmask
);
403 return !(x
& (x
+ 1));
406 ip_is_multicast(ovs_be32 ip
)
408 return (ip
& htonl(0xf0000000)) == htonl(0xe0000000);
410 int ip_count_cidr_bits(ovs_be32 netmask
);
411 void ip_format_masked(ovs_be32 ip
, ovs_be32 mask
, struct ds
*);
413 #define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4)
414 #define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15)
415 #define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl))
418 #define IPPROTO_SCTP 132
422 #define IP_ECN_NOT_ECT 0x0
423 #define IP_ECN_ECT_1 0x01
424 #define IP_ECN_ECT_0 0x02
425 #define IP_ECN_CE 0x03
426 #define IP_ECN_MASK 0x03
427 #define IP_DSCP_MASK 0xfc
431 #define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */
432 #define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */
433 #define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */
434 #define IP_IS_FRAGMENT(ip_frag_off) \
435 ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK))
437 #define IP_HEADER_LEN 20
443 ovs_be16 ip_frag_off
;
447 ovs_16aligned_be32 ip_src
;
448 ovs_16aligned_be32 ip_dst
;
450 BUILD_ASSERT_DECL(IP_HEADER_LEN
== sizeof(struct ip_header
));
452 #define ICMP_HEADER_LEN 8
466 ovs_16aligned_be32 gateway
;
468 uint8_t icmp_data
[0];
470 BUILD_ASSERT_DECL(ICMP_HEADER_LEN
== sizeof(struct icmp_header
));
472 #define SCTP_HEADER_LEN 12
479 BUILD_ASSERT_DECL(SCTP_HEADER_LEN
== sizeof(struct sctp_header
));
481 #define UDP_HEADER_LEN 8
488 BUILD_ASSERT_DECL(UDP_HEADER_LEN
== sizeof(struct udp_header
));
490 #define TCP_FIN 0x001
491 #define TCP_SYN 0x002
492 #define TCP_RST 0x004
493 #define TCP_PSH 0x008
494 #define TCP_ACK 0x010
495 #define TCP_URG 0x020
496 #define TCP_ECE 0x040
497 #define TCP_CWR 0x080
500 #define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12)))
501 #define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff)
502 #define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12)
504 #define TCP_HEADER_LEN 20
508 ovs_16aligned_be32 tcp_seq
;
509 ovs_16aligned_be32 tcp_ack
;
515 BUILD_ASSERT_DECL(TCP_HEADER_LEN
== sizeof(struct tcp_header
));
517 #define ARP_HRD_ETHERNET 1
518 #define ARP_PRO_IP 0x0800
519 #define ARP_OP_REQUEST 1
520 #define ARP_OP_REPLY 2
521 #define ARP_OP_RARP 3
523 #define ARP_ETH_HEADER_LEN 28
524 struct arp_eth_header
{
525 /* Generic members. */
526 ovs_be16 ar_hrd
; /* Hardware type. */
527 ovs_be16 ar_pro
; /* Protocol type. */
528 uint8_t ar_hln
; /* Hardware address length. */
529 uint8_t ar_pln
; /* Protocol address length. */
530 ovs_be16 ar_op
; /* Opcode. */
532 /* Ethernet+IPv4 specific members. */
533 uint8_t ar_sha
[ETH_ADDR_LEN
]; /* Sender hardware address. */
534 ovs_16aligned_be32 ar_spa
; /* Sender protocol address. */
535 uint8_t ar_tha
[ETH_ADDR_LEN
]; /* Target hardware address. */
536 ovs_16aligned_be32 ar_tpa
; /* Target protocol address. */
538 BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN
== sizeof(struct arp_eth_header
));
540 /* Like struct in6_addr, but whereas that struct requires 32-bit alignment on
541 * most implementations, this one only requires 16-bit alignment. */
542 union ovs_16aligned_in6_addr
{
544 ovs_16aligned_be32 be32
[4];
547 /* Like struct in6_hdr, but whereas that struct requires 32-bit alignment, this
548 * one only requires 16-bit alignment. */
549 struct ovs_16aligned_ip6_hdr
{
551 struct ovs_16aligned_ip6_hdrctl
{
552 ovs_16aligned_be32 ip6_un1_flow
;
553 ovs_be16 ip6_un1_plen
;
555 uint8_t ip6_un1_hlim
;
559 union ovs_16aligned_in6_addr ip6_src
;
560 union ovs_16aligned_in6_addr ip6_dst
;
563 /* Like struct in6_frag, but whereas that struct requires 32-bit alignment,
564 * this one only requires 16-bit alignment. */
565 struct ovs_16aligned_ip6_frag
{
567 uint8_t ip6f_reserved
;
569 ovs_16aligned_be32 ip6f_ident
;
572 /* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */
573 #define IPV6_LABEL_MASK 0x000fffff
577 * char *string = "1 ::1 2";
578 * char ipv6_s[IPV6_SCAN_LEN + 1];
579 * struct in6_addr ipv6;
581 * if (sscanf(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b) == 3
582 * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
586 #define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]"
587 #define IPV6_SCAN_LEN 46
589 extern const struct in6_addr in6addr_exact
;
590 #define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
591 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } }
593 static inline bool ipv6_addr_equals(const struct in6_addr
*a
,
594 const struct in6_addr
*b
)
596 #ifdef IN6_ARE_ADDR_EQUAL
597 return IN6_ARE_ADDR_EQUAL(a
, b
);
599 return !memcmp(a
, b
, sizeof(*a
));
603 static inline bool ipv6_mask_is_any(const struct in6_addr
*mask
) {
604 return ipv6_addr_equals(mask
, &in6addr_any
);
607 static inline bool ipv6_mask_is_exact(const struct in6_addr
*mask
) {
608 return ipv6_addr_equals(mask
, &in6addr_exact
);
611 static inline bool dl_type_is_ip_any(ovs_be16 dl_type
)
613 return dl_type
== htons(ETH_TYPE_IP
)
614 || dl_type
== htons(ETH_TYPE_IPV6
);
617 static inline bool is_ip_any(const struct flow
*flow
)
619 return dl_type_is_ip_any(flow
->dl_type
);
622 void format_ipv6_addr(char *addr_str
, const struct in6_addr
*addr
);
623 void print_ipv6_addr(struct ds
*string
, const struct in6_addr
*addr
);
624 void print_ipv6_masked(struct ds
*string
, const struct in6_addr
*addr
,
625 const struct in6_addr
*mask
);
626 struct in6_addr
ipv6_addr_bitand(const struct in6_addr
*src
,
627 const struct in6_addr
*mask
);
628 struct in6_addr
ipv6_create_mask(int mask
);
629 int ipv6_count_cidr_bits(const struct in6_addr
*netmask
);
630 bool ipv6_is_cidr(const struct in6_addr
*netmask
);
632 void *eth_compose(struct ofpbuf
*, const uint8_t eth_dst
[ETH_ADDR_LEN
],
633 const uint8_t eth_src
[ETH_ADDR_LEN
], uint16_t eth_type
,
635 void *snap_compose(struct ofpbuf
*, const uint8_t eth_dst
[ETH_ADDR_LEN
],
636 const uint8_t eth_src
[ETH_ADDR_LEN
],
637 unsigned int oui
, uint16_t snap_type
, size_t size
);
638 void packet_set_ipv4(struct ofpbuf
*, ovs_be32 src
, ovs_be32 dst
, uint8_t tos
,
640 void packet_set_ipv6(struct ofpbuf
*, uint8_t proto
, const ovs_be32 src
[4],
641 const ovs_be32 dst
[4], uint8_t tc
,
642 ovs_be32 fl
, uint8_t hlmit
);
643 void packet_set_tcp_port(struct ofpbuf
*, ovs_be16 src
, ovs_be16 dst
);
644 void packet_set_udp_port(struct ofpbuf
*, ovs_be16 src
, ovs_be16 dst
);
645 void packet_set_sctp_port(struct ofpbuf
*, ovs_be16 src
, ovs_be16 dst
);
647 uint16_t packet_get_tcp_flags(const struct ofpbuf
*, const struct flow
*);
648 void packet_format_tcp_flags(struct ds
*, uint16_t);
650 #endif /* packets.h */