1 #ifndef __LINUX_NETLINK_H
2 #define __LINUX_NETLINK_H
4 #include <linux/types.h>
6 #define NETLINK_ROUTE 0 /* Routing/device hook */
7 #define NETLINK_SKIP 1 /* Reserved for ENskip */
8 #define NETLINK_USERSOCK 2 /* Reserved for user mode socket protocols */
9 #define NETLINK_FIREWALL 3 /* Firewalling hook */
10 #define NETLINK_TCPDIAG 4 /* TCP socket monitoring */
11 #define NETLINK_NFLOG 5 /* netfilter/iptables ULOG */
12 #define NETLINK_XFRM 6 /* ipsec */
13 #define NETLINK_SELINUX 7 /* SELinux event notifications */
14 #define NETLINK_ARPD 8
15 #define NETLINK_AUDIT 9 /* auditing */
16 #define NETLINK_ROUTE6 11 /* af_inet6 route comm channel */
17 #define NETLINK_IP6_FW 13
18 #define NETLINK_DNRTMSG 14 /* DECnet routing messages */
19 #define NETLINK_TAPBASE 16 /* 16 to 31 are ethertap */
25 sa_family_t nl_family; /* AF_NETLINK */
26 unsigned short nl_pad; /* zero */
27 __u32 nl_pid; /* process pid */
28 __u32 nl_groups; /* multicast groups mask */
33 __u32 nlmsg_len; /* Length of message including header */
34 __u16 nlmsg_type; /* Message content */
35 __u16 nlmsg_flags; /* Additional flags */
36 __u32 nlmsg_seq; /* Sequence number */
37 __u32 nlmsg_pid; /* Sending process PID */
42 #define NLM_F_REQUEST 1 /* It is request message. */
43 #define NLM_F_MULTI 2 /* Multipart message, terminated by NLMSG_DONE */
44 #define NLM_F_ACK 4 /* Reply with ack, with zero or error code */
45 #define NLM_F_ECHO 8 /* Echo this request */
47 /* Modifiers to GET request */
48 #define NLM_F_ROOT 0x100 /* specify tree root */
49 #define NLM_F_MATCH 0x200 /* return all matching */
50 #define NLM_F_ATOMIC 0x400 /* atomic GET */
51 #define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH)
53 /* Modifiers to NEW request */
54 #define NLM_F_REPLACE 0x100 /* Override existing */
55 #define NLM_F_EXCL 0x200 /* Do not touch, if it exists */
56 #define NLM_F_CREATE 0x400 /* Create, if it does not exist */
57 #define NLM_F_APPEND 0x800 /* Add to end of list */
60 4.4BSD ADD NLM_F_CREATE|NLM_F_EXCL
61 4.4BSD CHANGE NLM_F_REPLACE
63 True CHANGE NLM_F_CREATE|NLM_F_REPLACE
68 #define NLMSG_ALIGNTO 4
69 #define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )
70 #define NLMSG_LENGTH(len) ((len)+NLMSG_ALIGN(sizeof(struct nlmsghdr)))
71 #define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len))
72 #define NLMSG_DATA(nlh) ((void*)(((char*)nlh) + NLMSG_LENGTH(0)))
73 #define NLMSG_NEXT(nlh,len) ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
74 (struct nlmsghdr*)(((char*)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))
75 #define NLMSG_OK(nlh,len) ((len) >= (int)sizeof(struct nlmsghdr) && \
76 (nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
77 (nlh)->nlmsg_len <= (len))
78 #define NLMSG_PAYLOAD(nlh,len) ((nlh)->nlmsg_len - NLMSG_SPACE((len)))
80 #define NLMSG_NOOP 0x1 /* Nothing. */
81 #define NLMSG_ERROR 0x2 /* Error */
82 #define NLMSG_DONE 0x3 /* End of a dump */
83 #define NLMSG_OVERRUN 0x4 /* Data lost */
91 #define NET_MAJOR 36 /* Major 36 is reserved for networking */
94 NETLINK_UNCONNECTED = 0,
99 #endif /* __LINUX_NETLINK_H */