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