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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */#ifndef _UAPI__LINUX_NETLINK_H#define _UAPI__LINUX_NETLINK_H
#include <linux/kernel.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_SMC 22 /* SMC monitoring */
#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 0x01 /* It is request message. */#define NLM_F_MULTI 0x02 /* Multipart message, terminated by NLMSG_DONE */#define NLM_F_ACK 0x04 /* Reply with ack, with zero or error code */#define NLM_F_ECHO 0x08 /* Echo this request */#define NLM_F_DUMP_INTR 0x10 /* Dump was inconsistent due to sequence change */#define NLM_F_DUMP_FILTERED 0x20 /* Dump was filtered as requested */
/* 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 */
/* Modifiers to DELETE request */#define NLM_F_NONREC 0x100 /* Do not delete recursively */
/* Flags for ACK message */#define NLM_F_CAPPED 0x100 /* request was capped */#define NLM_F_ACK_TLVS 0x200 /* extended ACK TVLs were included */
/* 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_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; /* * followed by the message contents unless NETLINK_CAP_ACK was set * or the ACK indicates success (error == 0) * message length is aligned with NLMSG_ALIGN() */ /* * followed by TLVs defined in enum nlmsgerr_attrs * if NETLINK_EXT_ACK was set */};
/** * enum nlmsgerr_attrs - nlmsgerr attributes * @NLMSGERR_ATTR_UNUSED: unused * @NLMSGERR_ATTR_MSG: error message string (string) * @NLMSGERR_ATTR_OFFS: offset of the invalid attribute in the original * message, counting from the beginning of the header (u32) * @NLMSGERR_ATTR_COOKIE: arbitrary subsystem specific cookie to * be used - in the success case - to identify a created * object or operation or similar (binary) * @__NLMSGERR_ATTR_MAX: number of attributes * @NLMSGERR_ATTR_MAX: highest attribute number */enum nlmsgerr_attrs { NLMSGERR_ATTR_UNUSED, NLMSGERR_ATTR_MSG, NLMSGERR_ATTR_OFFS, NLMSGERR_ATTR_COOKIE,
__NLMSGERR_ATTR_MAX, NLMSGERR_ATTR_MAX = __NLMSGERR_ATTR_MAX - 1};
#define NETLINK_ADD_MEMBERSHIP 1#define NETLINK_DROP_MEMBERSHIP 2#define NETLINK_PKTINFO 3#define NETLINK_BROADCAST_ERROR 4#define NETLINK_NO_ENOBUFS 5#ifndef __KERNEL__#define NETLINK_RX_RING 6#define NETLINK_TX_RING 7#endif#define NETLINK_LISTEN_ALL_NSID 8#define NETLINK_LIST_MEMBERSHIPS 9#define NETLINK_CAP_ACK 10#define NETLINK_EXT_ACK 11#define NETLINK_GET_STRICT_CHK 12
struct nl_pktinfo { __u32 group;};
struct nl_mmap_req { unsigned int nm_block_size; unsigned int nm_block_nr; unsigned int nm_frame_size; unsigned int nm_frame_nr;};
struct nl_mmap_hdr { unsigned int nm_status; unsigned int nm_len; __u32 nm_group; /* credentials */ __u32 nm_pid; __u32 nm_uid; __u32 nm_gid;};
#ifndef __KERNEL__enum nl_mmap_status { NL_MMAP_STATUS_UNUSED, NL_MMAP_STATUS_RESERVED, NL_MMAP_STATUS_VALID, NL_MMAP_STATUS_COPY, NL_MMAP_STATUS_SKIP,};
#define NL_MMAP_MSG_ALIGNMENT NLMSG_ALIGNTO#define NL_MMAP_MSG_ALIGN(sz) __ALIGN_KERNEL(sz, NL_MMAP_MSG_ALIGNMENT)#define NL_MMAP_HDRLEN NL_MMAP_MSG_ALIGN(sizeof(struct nl_mmap_hdr))#endif
#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)))
/* Generic 32 bitflags attribute content sent to the kernel. * * The value is a bitmap that defines the values being set * The selector is a bitmask that defines which value is legit * * Examples: * value = 0x0, and selector = 0x1 * implies we are selecting bit 1 and we want to set its value to 0. * * value = 0x2, and selector = 0x2 * implies we are selecting bit 2 and we want to set its value to 1. * */struct nla_bitfield32 { __u32 value; __u32 selector;};
#endif /* _UAPI__LINUX_NETLINK_H */