netlink.h revision 1d35a1273d97bf140fc0c770e58933cf1e9bb1b1
10633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#ifndef __LINUX_NETLINK_H 20633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define __LINUX_NETLINK_H 30633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 4d639d9d18b2ef5a43cda5424830005333acfb288osdl.net!shemminger#include <linux/socket.h> /* for sa_family_t */ 50633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#include <linux/types.h> 60633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 70633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NETLINK_ROUTE 0 /* Routing/device hook */ 81d35a1273d97bf140fc0c770e58933cf1e9bb1b1Stephen Hemminger#define NETLINK_UNUSED 1 /* Unused number */ 90633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NETLINK_USERSOCK 2 /* Reserved for user mode socket protocols */ 100633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NETLINK_FIREWALL 3 /* Firewalling hook */ 11351efcde4e62967362a10b29f3b701cfecd7cdfcshemminger#define NETLINK_INET_DIAG 4 /* INET socket monitoring */ 120633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NETLINK_NFLOG 5 /* netfilter/iptables ULOG */ 130633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NETLINK_XFRM 6 /* ipsec */ 140633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NETLINK_SELINUX 7 /* SELinux event notifications */ 15351efcde4e62967362a10b29f3b701cfecd7cdfcshemminger#define NETLINK_ISCSI 8 /* Open-iSCSI */ 160633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NETLINK_AUDIT 9 /* auditing */ 176864c1e7890c65dd2ee037809f772790b04792b4shemminger#define NETLINK_FIB_LOOKUP 10 182034ee975057937855cab33768b27977dcd4feaeshemminger#define NETLINK_CONNECTOR 11 196864c1e7890c65dd2ee037809f772790b04792b4shemminger#define NETLINK_NETFILTER 12 /* netfilter subsystem */ 200633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NETLINK_IP6_FW 13 210633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NETLINK_DNRTMSG 14 /* DECnet routing messages */ 22d639d9d18b2ef5a43cda5424830005333acfb288osdl.net!shemminger#define NETLINK_KOBJECT_UEVENT 15 /* Kernel messages to userspace */ 232034ee975057937855cab33768b27977dcd4feaeshemminger#define NETLINK_GENERIC 16 240633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 250633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define MAX_LINKS 32 260633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 270633baa17231b777e75b813439c237e3de380cc8osdl.net!shemmingerstruct sockaddr_nl 280633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger{ 290633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger sa_family_t nl_family; /* AF_NETLINK */ 300633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger unsigned short nl_pad; /* zero */ 310633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger __u32 nl_pid; /* process pid */ 320633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger __u32 nl_groups; /* multicast groups mask */ 330633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger}; 340633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 350633baa17231b777e75b813439c237e3de380cc8osdl.net!shemmingerstruct nlmsghdr 360633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger{ 370633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger __u32 nlmsg_len; /* Length of message including header */ 380633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger __u16 nlmsg_type; /* Message content */ 390633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger __u16 nlmsg_flags; /* Additional flags */ 400633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger __u32 nlmsg_seq; /* Sequence number */ 410633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger __u32 nlmsg_pid; /* Sending process PID */ 420633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger}; 430633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 440633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger/* Flags values */ 450633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 460633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLM_F_REQUEST 1 /* It is request message. */ 470633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLM_F_MULTI 2 /* Multipart message, terminated by NLMSG_DONE */ 480633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLM_F_ACK 4 /* Reply with ack, with zero or error code */ 490633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLM_F_ECHO 8 /* Echo this request */ 500633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 510633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger/* Modifiers to GET request */ 520633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLM_F_ROOT 0x100 /* specify tree root */ 530633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLM_F_MATCH 0x200 /* return all matching */ 540633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLM_F_ATOMIC 0x400 /* atomic GET */ 550633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH) 560633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 570633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger/* Modifiers to NEW request */ 580633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLM_F_REPLACE 0x100 /* Override existing */ 590633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLM_F_EXCL 0x200 /* Do not touch, if it exists */ 600633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLM_F_CREATE 0x400 /* Create, if it does not exist */ 610633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLM_F_APPEND 0x800 /* Add to end of list */ 620633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 630633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger/* 640633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 4.4BSD ADD NLM_F_CREATE|NLM_F_EXCL 650633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 4.4BSD CHANGE NLM_F_REPLACE 660633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 670633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger True CHANGE NLM_F_CREATE|NLM_F_REPLACE 680633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger Append NLM_F_CREATE 690633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger Check NLM_F_EXCL 700633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger */ 710633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 720633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLMSG_ALIGNTO 4 730633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) ) 7409954dc61adc3051cbb2127e2bfcf692502c8306shemminger#define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr))) 7509954dc61adc3051cbb2127e2bfcf692502c8306shemminger#define NLMSG_LENGTH(len) ((len)+NLMSG_ALIGN(NLMSG_HDRLEN)) 760633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len)) 770633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLMSG_DATA(nlh) ((void*)(((char*)nlh) + NLMSG_LENGTH(0))) 780633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLMSG_NEXT(nlh,len) ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \ 790633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger (struct nlmsghdr*)(((char*)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len))) 800633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLMSG_OK(nlh,len) ((len) >= (int)sizeof(struct nlmsghdr) && \ 810633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger (nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \ 820633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger (nlh)->nlmsg_len <= (len)) 830633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLMSG_PAYLOAD(nlh,len) ((nlh)->nlmsg_len - NLMSG_SPACE((len))) 840633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 850633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLMSG_NOOP 0x1 /* Nothing. */ 860633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLMSG_ERROR 0x2 /* Error */ 870633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLMSG_DONE 0x3 /* End of a dump */ 880633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NLMSG_OVERRUN 0x4 /* Data lost */ 890633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 9009954dc61adc3051cbb2127e2bfcf692502c8306shemminger#define NLMSG_MIN_TYPE 0x10 /* < 0x10: reserved control messages */ 9109954dc61adc3051cbb2127e2bfcf692502c8306shemminger 920633baa17231b777e75b813439c237e3de380cc8osdl.net!shemmingerstruct nlmsgerr 930633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger{ 940633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger int error; 950633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger struct nlmsghdr msg; 960633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger}; 970633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 98351efcde4e62967362a10b29f3b701cfecd7cdfcshemminger#define NETLINK_ADD_MEMBERSHIP 1 99351efcde4e62967362a10b29f3b701cfecd7cdfcshemminger#define NETLINK_DROP_MEMBERSHIP 2 100351efcde4e62967362a10b29f3b701cfecd7cdfcshemminger#define NETLINK_PKTINFO 3 101351efcde4e62967362a10b29f3b701cfecd7cdfcshemminger 102351efcde4e62967362a10b29f3b701cfecd7cdfcshemmingerstruct nl_pktinfo 103351efcde4e62967362a10b29f3b701cfecd7cdfcshemminger{ 104351efcde4e62967362a10b29f3b701cfecd7cdfcshemminger __u32 group; 105351efcde4e62967362a10b29f3b701cfecd7cdfcshemminger}; 106351efcde4e62967362a10b29f3b701cfecd7cdfcshemminger 1070633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#define NET_MAJOR 36 /* Major 36 is reserved for networking */ 1080633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 1090633baa17231b777e75b813439c237e3de380cc8osdl.net!shemmingerenum { 1100633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger NETLINK_UNCONNECTED = 0, 1110633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger NETLINK_CONNECTED, 1120633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger}; 1130633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 11409954dc61adc3051cbb2127e2bfcf692502c8306shemminger/* 11509954dc61adc3051cbb2127e2bfcf692502c8306shemminger * <------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)--> 11609954dc61adc3051cbb2127e2bfcf692502c8306shemminger * +---------------------+- - -+- - - - - - - - - -+- - -+ 11709954dc61adc3051cbb2127e2bfcf692502c8306shemminger * | Header | Pad | Payload | Pad | 11809954dc61adc3051cbb2127e2bfcf692502c8306shemminger * | (struct nlattr) | ing | | ing | 11909954dc61adc3051cbb2127e2bfcf692502c8306shemminger * +---------------------+- - -+- - - - - - - - - -+- - -+ 12009954dc61adc3051cbb2127e2bfcf692502c8306shemminger * <-------------- nlattr->nla_len --------------> 12109954dc61adc3051cbb2127e2bfcf692502c8306shemminger */ 12209954dc61adc3051cbb2127e2bfcf692502c8306shemminger 12309954dc61adc3051cbb2127e2bfcf692502c8306shemmingerstruct nlattr 12409954dc61adc3051cbb2127e2bfcf692502c8306shemminger{ 12509954dc61adc3051cbb2127e2bfcf692502c8306shemminger __u16 nla_len; 12609954dc61adc3051cbb2127e2bfcf692502c8306shemminger __u16 nla_type; 12709954dc61adc3051cbb2127e2bfcf692502c8306shemminger}; 12809954dc61adc3051cbb2127e2bfcf692502c8306shemminger 12909954dc61adc3051cbb2127e2bfcf692502c8306shemminger#define NLA_ALIGNTO 4 13009954dc61adc3051cbb2127e2bfcf692502c8306shemminger#define NLA_ALIGN(len) (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1)) 13109954dc61adc3051cbb2127e2bfcf692502c8306shemminger#define NLA_HDRLEN ((int) NLA_ALIGN(sizeof(struct nlattr))) 13209954dc61adc3051cbb2127e2bfcf692502c8306shemminger 1330633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger 1340633baa17231b777e75b813439c237e3de380cc8osdl.net!shemminger#endif /* __LINUX_NETLINK_H */ 135