netlink.h File Reference

#include <linux/socket.h>
#include <linux/types.h>

Include dependency graph for netlink.h:

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Data Structures
struct	sockaddr_nl
	Netlink socket address. More...
struct	nlmsghdr
	Netlink message header. More...
struct	nlmsgerr
	Netlink error message. More...
struct	nl_pktinfo
struct	nlattr

Macros
#define	NETLINK_ROUTE   0 /* Routing/device hook */
#define	NETLINK_UNUSED   1 /* Unused number */
#define	NETLINK_USERSOCK   2 /* Reserved for user mode socket protocols */
#define	NETLINK_FIREWALL   3 /* Firewalling hook */
#define	NETLINK_INET_DIAG   4 /* INET socket monitoring */
#define	NETLINK_NFLOG   5 /* netfilter/iptables ULOG */
#define	NETLINK_XFRM   6 /* ipsec */
#define	NETLINK_SELINUX   7 /* SELinux event notifications */
#define	NETLINK_ISCSI   8 /* Open-iSCSI */
#define	NETLINK_AUDIT   9 /* auditing */
#define	NETLINK_FIB_LOOKUP   10
#define	NETLINK_CONNECTOR   11
#define	NETLINK_NETFILTER   12 /* netfilter subsystem */
#define	NETLINK_IP6_FW   13
#define	NETLINK_DNRTMSG   14 /* DECnet routing messages */
#define	NETLINK_KOBJECT_UEVENT   15 /* Kernel messages to userspace */
#define	NETLINK_GENERIC   16
#define	NETLINK_SCSITRANSPORT   18 /* SCSI Transports */
#define	NETLINK_ECRYPTFS   19
#define	MAX_LINKS   32
#define	NLM_F_REQUEST   1 /* It is request message. */
#define	NLM_F_MULTI   2 /* Multipart message, terminated by NLMSG_DONE */
#define	NLM_F_ACK   4 /* Reply with ack, with zero or error code */
#define	NLM_F_ECHO   8 /* Echo this request */
#define	NLM_F_ROOT   0x100 /* specify tree root */
#define	NLM_F_MATCH   0x200 /* return all matching */
#define	NLM_F_ATOMIC   0x400 /* atomic GET */
#define	NLM_F_DUMP   (NLM_F_ROOT|NLM_F_MATCH)
#define	NLM_F_REPLACE   0x100 /* Override existing */
#define	NLM_F_EXCL   0x200 /* Do not touch, if it exists */
#define	NLM_F_CREATE   0x400 /* Create, if it does not exist */
#define	NLM_F_APPEND   0x800 /* Add to end of list */
#define	NLMSG_ALIGNTO   4
#define	NLMSG_ALIGN(len)   ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )
#define	NLMSG_HDRLEN   ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
#define	NLMSG_LENGTH(len)   ((len)+NLMSG_ALIGN(NLMSG_HDRLEN))
#define	NLMSG_SPACE(len)   NLMSG_ALIGN(NLMSG_LENGTH(len))
#define	NLMSG_DATA(nlh)   ((void*)(((char*)nlh) + NLMSG_LENGTH(0)))
#define	NLMSG_NEXT(nlh, len)
#define	NLMSG_OK(nlh, len)
#define	NLMSG_PAYLOAD(nlh, len)   ((nlh)->nlmsg_len - NLMSG_SPACE((len)))
#define	NLMSG_NOOP   0x1 /* Nothing. */
#define	NLMSG_ERROR   0x2 /* Error */
#define	NLMSG_DONE   0x3 /* End of a dump */
#define	NLMSG_OVERRUN   0x4 /* Data lost */
#define	NLMSG_MIN_TYPE   0x10 /* < 0x10: reserved control messages */
#define	NETLINK_ADD_MEMBERSHIP   1
#define	NETLINK_DROP_MEMBERSHIP   2
#define	NETLINK_PKTINFO   3
#define	NET_MAJOR   36 /* Major 36 is reserved for networking */
#define	NLA_F_NESTED   (1 << 15)
#define	NLA_F_NET_BYTEORDER   (1 << 14)
#define	NLA_TYPE_MASK   ~(NLA_F_NESTED | NLA_F_NET_BYTEORDER)
#define	NLA_ALIGNTO   4
#define	NLA_ALIGN(len)   (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))
#define	NLA_HDRLEN   ((int) NLA_ALIGN(sizeof(struct nlattr)))

Enumerations
enum	{   NETLINK_UNCONNECTED = 0,   NETLINK_CONNECTED }

Macro Definition Documentation

#define MAX_LINKS   32

#define NET_MAJOR   36 /* Major 36 is reserved for networking */

#define NETLINK_ADD_MEMBERSHIP   1

#define NETLINK_AUDIT   9 /* auditing */

#define NETLINK_CONNECTOR   11

#define NETLINK_DNRTMSG   14 /* DECnet routing messages */

#define NETLINK_DROP_MEMBERSHIP   2

#define NETLINK_ECRYPTFS   19

#define NETLINK_FIB_LOOKUP   10

#define NETLINK_FIREWALL   3 /* Firewalling hook */

#define NETLINK_GENERIC   16

#define NETLINK_INET_DIAG   4 /* INET socket monitoring */

#define NETLINK_IP6_FW   13

#define NETLINK_ISCSI   8 /* Open-iSCSI */

#define NETLINK_KOBJECT_UEVENT   15 /* Kernel messages to userspace */

#define NETLINK_NETFILTER   12 /* netfilter subsystem */

#define NETLINK_NFLOG   5 /* netfilter/iptables ULOG */

#define NETLINK_PKTINFO   3

#define NETLINK_ROUTE   0 /* Routing/device hook */

#define NETLINK_SCSITRANSPORT   18 /* SCSI Transports */

#define NETLINK_SELINUX   7 /* SELinux event notifications */

#define NETLINK_UNUSED   1 /* Unused number */

#define NETLINK_USERSOCK   2 /* Reserved for user mode socket protocols */

#define NETLINK_XFRM   6 /* ipsec */

#define NLA_ALIGN

(

len

)

(((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))

#define NLA_ALIGNTO   4

#define NLA_F_NESTED   (1 << 15)

#define NLA_F_NET_BYTEORDER   (1 << 14)

#define NLA_HDRLEN   ((int) NLA_ALIGN(sizeof(struct nlattr)))

#define NLA_TYPE_MASK   ~(NLA_F_NESTED | NLA_F_NET_BYTEORDER)

#define NLM_F_ACK   4 /* Reply with ack, with zero or error code */

#define NLM_F_APPEND   0x800 /* Add to end of list */

#define NLM_F_ATOMIC   0x400 /* atomic GET */

#define NLM_F_CREATE   0x400 /* Create, if it does not exist */

#define NLM_F_DUMP   (NLM_F_ROOT|NLM_F_MATCH)

#define NLM_F_ECHO   8 /* Echo this request */

#define NLM_F_EXCL   0x200 /* Do not touch, if it exists */

#define NLM_F_MATCH   0x200 /* return all matching */

#define NLM_F_MULTI   2 /* Multipart message, terminated by NLMSG_DONE */

#define NLM_F_REPLACE   0x100 /* Override existing */

#define NLM_F_REQUEST   1 /* It is request message. */

#define NLM_F_ROOT   0x100 /* specify tree root */

#define NLMSG_ALIGN

(

len

)

( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )

#define NLMSG_ALIGNTO   4

#define NLMSG_DATA

(

nlh

)

((void*)(((char*)nlh) + NLMSG_LENGTH(0)))

#define NLMSG_DONE   0x3 /* End of a dump */

#define NLMSG_ERROR   0x2 /* Error */

#define NLMSG_HDRLEN   ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))

#define NLMSG_LENGTH

(

len

)

((len)+NLMSG_ALIGN(NLMSG_HDRLEN))

#define NLMSG_MIN_TYPE   0x10 /* < 0x10: reserved control messages */

#define NLMSG_NEXT	(		nlh,
			len
	)

Value:

((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
                  (struct nlmsghdr*)(((char*)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))

#define NLMSG_NOOP   0x1 /* Nothing. */

#define NLMSG_OK	(		nlh,
			len
	)

Value:

((len) >= (int)sizeof(struct nlmsghdr) && \
               (nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
               (nlh)->nlmsg_len <= (len))

#define NLMSG_OVERRUN   0x4 /* Data lost */

#define NLMSG_PAYLOAD	(		nlh,
			len
	)		((nlh)->nlmsg_len - NLMSG_SPACE((len)))

#define NLMSG_SPACE

(

len

)

NLMSG_ALIGN(NLMSG_LENGTH(len))

Enumeration Type Documentation

anonymous enum

Enumerator
NETLINK_UNCONNECTED
NETLINK_CONNECTED