[deliverable/linux.git] / include / uapi / linux / netlink.h

#ifndef _UAPI__LINUX_NETLINK_H
#define _UAPI__LINUX_NETLINK_H

#include <linux/socket.h> /* for __kernel_sa_family_t */
#include <linux/types.h>

#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	/* Unused number, formerly ip_queue		*/
#define NETLINK_SOCK_DIAG	4	/* 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
/* leave room for NETLINK_DM (DM Events) */
#define NETLINK_SCSITRANSPORT	18	/* SCSI Transports */
#define NETLINK_ECRYPTFS	19
#define NETLINK_RDMA		20
#define NETLINK_CRYPTO		21	/* Crypto layer */

#define NETLINK_INET_DIAG	NETLINK_SOCK_DIAG

#define MAX_LINKS 32		

struct sockaddr_nl {
	__kernel_sa_family_t	nl_family;	/* AF_NETLINK	*/
	unsigned short	nl_pad;		/* zero		*/
	__u32		nl_pid;		/* port ID	*/
       	__u32		nl_groups;	/* multicast groups mask */
};

struct nlmsghdr {
	__u32		nlmsg_len;	/* Length of message including header */
	__u16		nlmsg_type;	/* Message content */
	__u16		nlmsg_flags;	/* Additional flags */
	__u32		nlmsg_seq;	/* Sequence number */
	__u32		nlmsg_pid;	/* Sending process port ID */
};

/* Flags values */

#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_DUMP_INTR		16	/* Dump was inconsistent due to sequence change */

/* Modifiers to GET 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)

/* Modifiers to NEW request */
#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		*/

/*
   4.4BSD ADD		NLM_F_CREATE|NLM_F_EXCL
   4.4BSD CHANGE	NLM_F_REPLACE

   True CHANGE		NLM_F_CREATE|NLM_F_REPLACE
   Append		NLM_F_CREATE
   Check		NLM_F_EXCL
 */

#define NLMSG_ALIGNTO	4U
#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)	 ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
				  (struct nlmsghdr*)(((char*)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))
#define NLMSG_OK(nlh,len) ((len) >= (int)sizeof(struct nlmsghdr) && \
			   (nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
			   (nlh)->nlmsg_len <= (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 */

struct nlmsgerr {
	int		error;
	struct nlmsghdr msg;
};

#define NETLINK_ADD_MEMBERSHIP	1
#define NETLINK_DROP_MEMBERSHIP	2
#define NETLINK_PKTINFO		3
#define NETLINK_BROADCAST_ERROR	4
#define NETLINK_NO_ENOBUFS	5

struct nl_pktinfo {
	__u32	group;
};

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

enum {
	NETLINK_UNCONNECTED = 0,
	NETLINK_CONNECTED,
};

/*
 *  <------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)-->
 * +---------------------+- - -+- - - - - - - - - -+- - -+
 * |        Header       | Pad |     Payload       | Pad |
 * |   (struct nlattr)   | ing |                   | ing |
 * +---------------------+- - -+- - - - - - - - - -+- - -+
 *  <-------------- nlattr->nla_len -------------->
 */

struct nlattr {
	__u16           nla_len;
	__u16           nla_type;
};

/*
 * nla_type (16 bits)
 * +---+---+-------------------------------+
 * | N | O | Attribute Type                |
 * +---+---+-------------------------------+
 * N := Carries nested attributes
 * O := Payload stored in network byte order
 *
 * Note: The N and O flag are mutually exclusive.
 */
#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)))


#endif /* _UAPI__LINUX_NETLINK_H */
Commit	Line	Data
607ca46e DH	1	#ifndef _UAPI__LINUX_NETLINK_H
	2	#define _UAPI__LINUX_NETLINK_H
	3
	4	#include <linux/socket.h> /* for __kernel_sa_family_t */
	5	#include <linux/types.h>
	6
	7	#define NETLINK_ROUTE 0 /* Routing/device hook */
	8	#define NETLINK_UNUSED 1 /* Unused number */
	9	#define NETLINK_USERSOCK 2 /* Reserved for user mode socket protocols */
	10	#define NETLINK_FIREWALL 3 /* Unused number, formerly ip_queue */
	11	#define NETLINK_SOCK_DIAG 4 /* socket monitoring */
	12	#define NETLINK_NFLOG 5 /* netfilter/iptables ULOG */
	13	#define NETLINK_XFRM 6 /* ipsec */
	14	#define NETLINK_SELINUX 7 /* SELinux event notifications */
	15	#define NETLINK_ISCSI 8 /* Open-iSCSI */
	16	#define NETLINK_AUDIT 9 /* auditing */
	17	#define NETLINK_FIB_LOOKUP 10
	18	#define NETLINK_CONNECTOR 11
	19	#define NETLINK_NETFILTER 12 /* netfilter subsystem */
	20	#define NETLINK_IP6_FW 13
	21	#define NETLINK_DNRTMSG 14 /* DECnet routing messages */
	22	#define NETLINK_KOBJECT_UEVENT 15 /* Kernel messages to userspace */
	23	#define NETLINK_GENERIC 16
	24	/* leave room for NETLINK_DM (DM Events) */
	25	#define NETLINK_SCSITRANSPORT 18 /* SCSI Transports */
	26	#define NETLINK_ECRYPTFS 19
	27	#define NETLINK_RDMA 20
	28	#define NETLINK_CRYPTO 21 /* Crypto layer */
	29
	30	#define NETLINK_INET_DIAG NETLINK_SOCK_DIAG
	31
	32	#define MAX_LINKS 32
	33
	34	struct sockaddr_nl {
	35	__kernel_sa_family_t nl_family; /* AF_NETLINK */
	36	unsigned short nl_pad; /* zero */
	37	__u32 nl_pid; /* port ID */
	38	__u32 nl_groups; /* multicast groups mask */
	39	};
	40
	41	struct nlmsghdr {
	42	__u32 nlmsg_len; /* Length of message including header */
	43	__u16 nlmsg_type; /* Message content */
	44	__u16 nlmsg_flags; /* Additional flags */
	45	__u32 nlmsg_seq; /* Sequence number */
	46	__u32 nlmsg_pid; /* Sending process port ID */
	47	};
	48
	49	/* Flags values */
	50
	51	#define NLM_F_REQUEST 1 /* It is request message. */
	52	#define NLM_F_MULTI 2 /* Multipart message, terminated by NLMSG_DONE */
	53	#define NLM_F_ACK 4 /* Reply with ack, with zero or error code */
	54	#define NLM_F_ECHO 8 /* Echo this request */
	55	#define NLM_F_DUMP_INTR 16 /* Dump was inconsistent due to sequence change */
	56
	57	/* Modifiers to GET request */
	58	#define NLM_F_ROOT 0x100 /* specify tree root */
	59	#define NLM_F_MATCH 0x200 /* return all matching */
	60	#define NLM_F_ATOMIC 0x400 /* atomic GET */
	61	#define NLM_F_DUMP (NLM_F_ROOT\|NLM_F_MATCH)
	62
	63	/* Modifiers to NEW request */
	64	#define NLM_F_REPLACE 0x100 /* Override existing */
65	#define NLM_F_EXCL 0x200 /* Do not touch, if it exists */
66	#define NLM_F_CREATE 0x400 /* Create, if it does not exist */
67	#define NLM_F_APPEND 0x800 /* Add to end of list */
68
69	/*
70	4.4BSD ADD NLM_F_CREATE\|NLM_F_EXCL
71	4.4BSD CHANGE NLM_F_REPLACE
72
73	True CHANGE NLM_F_CREATE\|NLM_F_REPLACE
74	Append NLM_F_CREATE
75	Check NLM_F_EXCL
76	*/
77
78	#define NLMSG_ALIGNTO 4U
79	#define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )
80	#define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
81	#define NLMSG_LENGTH(len) ((len)+NLMSG_ALIGN(NLMSG_HDRLEN))
82	#define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len))
83	#define NLMSG_DATA(nlh) ((void)(((char)nlh) + NLMSG_LENGTH(0)))
84	#define NLMSG_NEXT(nlh,len) ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
85	(struct nlmsghdr)(((char)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))
86	#define NLMSG_OK(nlh,len) ((len) >= (int)sizeof(struct nlmsghdr) && \
87	(nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
88	(nlh)->nlmsg_len <= (len))
89	#define NLMSG_PAYLOAD(nlh,len) ((nlh)->nlmsg_len - NLMSG_SPACE((len)))
90
91	#define NLMSG_NOOP 0x1 /* Nothing. */
92	#define NLMSG_ERROR 0x2 /* Error */
93	#define NLMSG_DONE 0x3 /* End of a dump */
94	#define NLMSG_OVERRUN 0x4 /* Data lost */
95
96	#define NLMSG_MIN_TYPE 0x10 /* < 0x10: reserved control messages */
97
98	struct nlmsgerr {
99	int error;
100	struct nlmsghdr msg;
101	};
102
103	#define NETLINK_ADD_MEMBERSHIP 1
104	#define NETLINK_DROP_MEMBERSHIP 2
105	#define NETLINK_PKTINFO 3
106	#define NETLINK_BROADCAST_ERROR 4
107	#define NETLINK_NO_ENOBUFS 5
108
109	struct nl_pktinfo {
110	__u32 group;
111	};
112
113	#define NET_MAJOR 36 /* Major 36 is reserved for networking */
114
115	enum {
116	NETLINK_UNCONNECTED = 0,
117	NETLINK_CONNECTED,
118	};
119
120	/*
121	* <------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)-->
122	* +---------------------+- - -+- - - - - - - - - -+- - -+
123	* \| Header \| Pad \| Payload \| Pad \|
124	* \| (struct nlattr) \| ing \| \| ing \|
125	* +---------------------+- - -+- - - - - - - - - -+- - -+
126	* <-------------- nlattr->nla_len -------------->
127	*/
128
129	struct nlattr {
130	__u16 nla_len;
131	__u16 nla_type;
132	};
133
134	/*
135	* nla_type (16 bits)
136	* +---+---+-------------------------------+
137	* \| N \| O \| Attribute Type \|
138	* +---+---+-------------------------------+
139	* N := Carries nested attributes
140	* O := Payload stored in network byte order
141	*
142	* Note: The N and O flag are mutually exclusive.
143	*/
144	#define NLA_F_NESTED (1 << 15)
145	#define NLA_F_NET_BYTEORDER (1 << 14)
146	#define NLA_TYPE_MASK ~(NLA_F_NESTED \| NLA_F_NET_BYTEORDER)
147
148	#define NLA_ALIGNTO 4
149	#define NLA_ALIGN(len) (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))
150	#define NLA_HDRLEN ((int) NLA_ALIGN(sizeof(struct nlattr)))
151
152
153	#endif /* _UAPI__LINUX_NETLINK_H */