1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 #define _UAPI__LINUX_NETLINK_H
9 #define NETLINK_ROUTE		0	/* Routing/device hook				*/
10 #define NETLINK_UNUSED		1	/* Unused number				*/
11 #define NETLINK_USERSOCK	2	/* Reserved for user mode socket protocols 	*/
12 #define NETLINK_FIREWALL	3	/* Unused number, formerly ip_queue		*/
13 #define NETLINK_SOCK_DIAG	4	/* socket monitoring				*/
14 #define NETLINK_NFLOG		5	/* netfilter/iptables ULOG */
15 #define NETLINK_XFRM		6	/* ipsec */
16 #define NETLINK_SELINUX		7	/* SELinux event notifications */
17 #define NETLINK_ISCSI		8	/* Open-iSCSI */
18 #define NETLINK_AUDIT		9	/* auditing */
19 #define NETLINK_FIB_LOOKUP	10	
20 #define NETLINK_CONNECTOR	11
21 #define NETLINK_NETFILTER	12	/* netfilter subsystem */
22 #define NETLINK_IP6_FW		13
23 #define NETLINK_DNRTMSG		14	/* DECnet routing messages */
24 #define NETLINK_KOBJECT_UEVENT	15	/* Kernel messages to userspace */
25 #define NETLINK_GENERIC		16
27 #define NETLINK_SCSITRANSPORT	18	/* SCSI Transports */
28 #define NETLINK_ECRYPTFS	19
29 #define NETLINK_RDMA		20
30 #define NETLINK_CRYPTO		21	/* Crypto layer */
31 #define NETLINK_SMC		22	/* SMC monitoring */
33 #define NETLINK_INET_DIAG	NETLINK_SOCK_DIAG
35 #define MAX_LINKS 32		
54 #define NLM_F_REQUEST		0x01	/* It is request message. 	*/
55 #define NLM_F_MULTI		0x02	/* Multipart message, terminated by NLMSG_DONE */
56 #define NLM_F_ACK		0x04	/* Reply with ack, with zero or error code */
57 #define NLM_F_ECHO		0x08	/* Echo this request 		*/
58 #define NLM_F_DUMP_INTR		0x10	/* Dump was inconsistent due to sequence change */
59 #define NLM_F_DUMP_FILTERED	0x20	/* Dump was filtered as requested */
62 #define NLM_F_ROOT	0x100	/* specify tree	root	*/
63 #define NLM_F_MATCH	0x200	/* return all matching	*/
64 #define NLM_F_ATOMIC	0x400	/* atomic GET		*/
65 #define NLM_F_DUMP	(NLM_F_ROOT|NLM_F_MATCH)
68 #define NLM_F_REPLACE	0x100	/* Override existing		*/
69 #define NLM_F_EXCL	0x200	/* Do not touch, if it exists	*/
70 #define NLM_F_CREATE	0x400	/* Create, if it does not exist	*/
71 #define NLM_F_APPEND	0x800	/* Add to end of list		*/
74 #define NLM_F_NONREC	0x100	/* Do not delete recursively	*/
77 #define NLM_F_CAPPED	0x100	/* request was capped */
78 #define NLM_F_ACK_TLVS	0x200	/* extended ACK TVLs were included */
89 #define NLMSG_ALIGNTO	4U
90 #define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )  argument
91 #define NLMSG_HDRLEN	 ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
92 #define NLMSG_LENGTH(len) ((len) + NLMSG_HDRLEN)  argument
93 #define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len))  argument
94 #define NLMSG_DATA(nlh)  ((void*)(((char*)nlh) + NLMSG_LENGTH(0)))
95 #define NLMSG_NEXT(nlh,len)	 ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \  argument
96 				  (struct nlmsghdr*)(((char*)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))
97 #define NLMSG_OK(nlh,len) ((len) >= (int)sizeof(struct nlmsghdr) && \  argument
98 			   (nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
99 			   (nlh)->nlmsg_len <= (len))
100 #define NLMSG_PAYLOAD(nlh,len) ((nlh)->nlmsg_len - NLMSG_SPACE((len)))  argument
102 #define NLMSG_NOOP		0x1	/* Nothing.		*/
103 #define NLMSG_ERROR		0x2	/* Error		*/
104 #define NLMSG_DONE		0x3	/* End of a dump	*/
105 #define NLMSG_OVERRUN		0x4	/* Data lost		*/
107 #define NLMSG_MIN_TYPE		0x10	/* < 0x10: reserved control messages */
114 	 * or the ACK indicates success (error == 0)
124  * enum nlmsgerr_attrs - nlmsgerr attributes
130  *	be used - in the success case - to identify a created
131  *	object or operation or similar (binary)
142 	NLMSGERR_ATTR_MAX = __NLMSGERR_ATTR_MAX - 1
145 #define NETLINK_ADD_MEMBERSHIP		1
146 #define NETLINK_DROP_MEMBERSHIP		2
147 #define NETLINK_PKTINFO			3
148 #define NETLINK_BROADCAST_ERROR		4
149 #define NETLINK_NO_ENOBUFS		5
151 #define NETLINK_RX_RING			6
152 #define NETLINK_TX_RING			7
154 #define NETLINK_LISTEN_ALL_NSID		8
155 #define NETLINK_LIST_MEMBERSHIPS	9
156 #define NETLINK_CAP_ACK			10
157 #define NETLINK_EXT_ACK			11
158 #define NETLINK_GET_STRICT_CHK		12
190 #define NL_MMAP_MSG_ALIGNMENT		NLMSG_ALIGNTO
191 #define NL_MMAP_MSG_ALIGN(sz)		__ALIGN_KERNEL(sz, NL_MMAP_MSG_ALIGNMENT)
192 #define NL_MMAP_HDRLEN			NL_MMAP_MSG_ALIGN(sizeof(struct nl_mmap_hdr))
195 #define NET_MAJOR 36		/* Major 36 is reserved for networking 						*/
203  *  <------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)-->
204  * +---------------------+- - -+- - - - - - - - - -+- - -+
207  * +---------------------+- - -+- - - - - - - - - -+- - -+
208  *  <-------------- nlattr->nla_len -------------->
218  * +---+---+-------------------------------+
220  * +---+---+-------------------------------+
226 #define NLA_F_NESTED		(1 << 15)
227 #define NLA_F_NET_BYTEORDER	(1 << 14)
228 #define NLA_TYPE_MASK		~(NLA_F_NESTED | NLA_F_NET_BYTEORDER)
230 #define NLA_ALIGNTO		4
231 #define NLA_ALIGN(len)		(((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))  argument
232 #define NLA_HDRLEN		((int) NLA_ALIGN(sizeof(struct nlattr)))