priv_netlink.h revision 8d520ff1dc2da35cdca849e982051b86468016d8 
1/*
2 * wpa_supplicant - Private copy of Linux netlink/rtnetlink definitions.
3 * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15#ifndef PRIV_NETLINK_H
16#define PRIV_NETLINK_H
17
18/*
19 * This should be replaced with user space header once one is available with C
20 * library, etc..
21 */
22
23#ifndef IFF_LOWER_UP
24#define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
25#endif
26#ifndef IFF_DORMANT
27#define IFF_DORMANT    0x20000         /* driver signals dormant       */
28#endif
29
30#ifndef IFLA_IFNAME
31#define IFLA_IFNAME 3
32#endif
33#ifndef IFLA_WIRELESS
34#define IFLA_WIRELESS 11
35#endif
36#ifndef IFLA_OPERSTATE
37#define IFLA_OPERSTATE 16
38#endif
39#ifndef IFLA_LINKMODE
40#define IFLA_LINKMODE 17
41#define IF_OPER_DORMANT 5
42#define IF_OPER_UP 6
43#endif
44
45#define NLM_F_REQUEST 1
46
47#define NETLINK_ROUTE 0
48#define RTMGRP_LINK 1
49#define RTM_BASE 0x10
50#define RTM_NEWLINK (RTM_BASE + 0)
51#define RTM_DELLINK (RTM_BASE + 1)
52#define RTM_SETLINK (RTM_BASE + 3)
53
54#define NLMSG_ALIGNTO 4
55#define NLMSG_ALIGN(len) (((len) + NLMSG_ALIGNTO - 1) & ~(NLMSG_ALIGNTO - 1))
56#define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
57#define NLMSG_LENGTH(len) ((len) + NLMSG_ALIGN(sizeof(struct nlmsghdr)))
58#define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len))
59#define NLMSG_DATA(nlh) ((void*) (((char*) nlh) + NLMSG_LENGTH(0)))
60#define NLMSG_NEXT(nlh,len) ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
61			     (struct nlmsghdr *) \
62			     (((char *)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))
63#define NLMSG_OK(nlh,len) ((len) >= (int) sizeof(struct nlmsghdr) && \
64			   (nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
65			   (int) (nlh)->nlmsg_len <= (len))
66#define NLMSG_PAYLOAD(nlh,len) ((nlh)->nlmsg_len - NLMSG_SPACE((len)))
67
68#define RTA_ALIGNTO 4
69#define RTA_ALIGN(len) (((len) + RTA_ALIGNTO - 1) & ~(RTA_ALIGNTO - 1))
70#define RTA_OK(rta,len) \
71((len) > 0 && (rta)->rta_len >= sizeof(struct rtattr) && \
72(rta)->rta_len <= (len))
73#define RTA_NEXT(rta,attrlen) \
74((attrlen) -= RTA_ALIGN((rta)->rta_len), \
75(struct rtattr *) (((char *)(rta)) + RTA_ALIGN((rta)->rta_len)))
76#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
77#define RTA_DATA(rta) ((void *) (((char *) (rta)) + RTA_LENGTH(0)))
78
79
80struct sockaddr_nl
81{
82	sa_family_t nl_family;
83	unsigned short nl_pad;
84	u32 nl_pid;
85	u32 nl_groups;
86};
87
88struct nlmsghdr
89{
90	u32 nlmsg_len;
91	u16 nlmsg_type;
92	u16 nlmsg_flags;
93	u32 nlmsg_seq;
94	u32 nlmsg_pid;
95};
96
97struct ifinfomsg
98{
99	unsigned char ifi_family;
100	unsigned char __ifi_pad;
101	unsigned short ifi_type;
102	int ifi_index;
103	unsigned ifi_flags;
104	unsigned ifi_change;
105};
106
107struct rtattr
108{
109	unsigned short rta_len;
110	unsigned short rta_type;
111};
112
113#endif /* PRIV_NETLINK_H */
114