1 /* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
4 * We are making the OpenFlow specification and associated documentation
5 * (Software) available for public use and benefit with the expectation
6 * that others will use, modify and enhance the Software and contribute
7 * those enhancements back to the community. However, since we would
8 * like to make the Software available for broadest use, with as few
9 * restrictions as possible permission is hereby granted, free of
10 * charge, to any person obtaining a copy of this Software to deal in
11 * the Software under the copyrights without restriction, including
12 * without limitation the rights to use, copy, modify, merge, publish,
13 * distribute, sublicense, and/or sell copies of the Software, and to
14 * permit persons to whom the Software is furnished to do so, subject to
15 * the following conditions:
17 * The above copyright notice and this permission notice shall be
18 * included in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
24 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
25 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
26 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 * The name and trademarks of copyright holder(s) may NOT be used in
30 * advertising or publicity pertaining to the Software or any
31 * derivatives without specific, written prior permission.
34 #ifndef NETLINK_PROTOCOL_H
35 #define NETLINK_PROTOCOL_H 1
37 /* Netlink protocol definitions.
39 * These definitions are equivalent to those in the Linux 2.6 kernel headers,
40 * without requiring those headers to be available. */
43 #include <sys/socket.h>
46 #define NETLINK_GENERIC 16
49 sa_family_t nl_family;
50 unsigned short int nl_pad;
54 BUILD_ASSERT_DECL(sizeof(struct sockaddr_nl) == 12);
56 /* nlmsg_flags bits. */
57 #define NLM_F_REQUEST 0x001
58 #define NLM_F_MULTI 0x002
59 #define NLM_F_ACK 0x004
60 #define NLM_F_ECHO 0x008
62 #define NLM_F_ROOT 0x100
63 #define NLM_F_MATCH 0x200
64 #define NLM_F_ATOMIC 0x400
65 #define NLM_F_DUMP (NLM_F_ROOT | NLM_F_MATCH)
67 /* nlmsg_type values. */
71 #define NLMSG_OVERRUN 4
73 #define NLMSG_MIN_TYPE 0x10
82 BUILD_ASSERT_DECL(sizeof(struct nlmsghdr) == 16);
84 #define NLMSG_ALIGNTO 4
85 #define NLMSG_ALIGN(SIZE) ROUND_UP(SIZE, NLMSG_ALIGNTO)
86 #define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
93 BUILD_ASSERT_DECL(sizeof(struct nlmsgerr) == 20);
95 #define NETLINK_ADD_MEMBERSHIP 1
96 #define NETLINK_DROP_MEMBERSHIP 2
97 #define NETLINK_PKTINFO 3
104 BUILD_ASSERT_DECL(sizeof(struct genlmsghdr) == 4);
106 #define GENL_HDRLEN NLMSG_ALIGN(sizeof(struct genlmsghdr))
112 BUILD_ASSERT_DECL(sizeof(struct nlattr) == 4);
114 #define NLA_ALIGNTO 4
115 #define NLA_ALIGN(SIZE) ROUND_UP(SIZE, NLA_ALIGNTO)
116 #define NLA_HDRLEN ((int) NLA_ALIGN(sizeof(struct nlattr)))
118 #define GENL_MIN_ID NLMSG_MIN_TYPE
119 #define GENL_MAX_ID 1023
121 #define GENL_ID_CTRL NLMSG_MIN_TYPE
134 #define CTRL_CMD_MAX (__CTRL_CMD_MAX - 1)
139 CTRL_ATTR_FAMILY_NAME,
147 #define CTRL_ATTR_MAX (__CTRL_ATTR_MAX - 1)
156 #define CTRL_ATTR_OP_MAX (__CTRL_ATTR_OP_MAX - 1)
158 #endif /* netlink-protocol.h */