diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/netlink/netlink.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/netlink/netlink.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/netlink/netlink.h b/sysdeps/unix/sysv/linux/netlink/netlink.h new file mode 100644 index 0000000000..9d75698d8e --- /dev/null +++ b/sysdeps/unix/sysv/linux/netlink/netlink.h @@ -0,0 +1,126 @@ +/* Definitions for use with Linux AF_NETLINK sockets. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef __NETLINK_NETLINK_H +#define __NETLINK_NETLINK_H 1 + +#include <features.h> + +#include <sys/types.h> +#include <bits/sockaddr.h> + +__BEGIN_DECLS + +struct sockaddr_nl + { + __SOCKADDR_COMMON (nl_); + unsigned short nl_pad; /* zero. */ + uint32_t nl_pid; /* process pid. */ + uint32_t nl_groups; /* multicast groups mask. */ + }; + +#define NETLINK_ROUTE 0 /* Routing/device hook. */ +#define NETLINK_SKIP 1 /* Reserved for ENskip. */ +#define NETLINK_USERSOCK 2 /* Reserved for user mode + socket protocolss. */ +#define NETLINK_FIREWALL 3 /* Firewalling hook. */ +#define NETLINK_ARPD 8 +#define NETLINK_ROUTE6 11 /* AF_INET6 route comm channel */ +#define NETLINK_IP6_FW 13 +#define NETLINK_TAPBASE 16 /* 16 to 31 are ethertap */ + +#define MAX_LINKS 32 + +struct nlmsghdr + { + uint32_t nlmsg_len; /* Length of message including header */ + uint16_t nlmsg_type; /* Message content */ + uint16_t nlmsg_flags; /* Additional flags */ + uint32_t nlmsg_seq; /* Sequence number */ + uint32_t nlmsg_pid; /* Sending process PID */ + }; + +/* Flag bits */ +#define NLM_F_REQUEST 1 /* Message is a request. */ +#define NLM_F_MULTI 2 /* Multipart message, terminated by + NLMSG_DONE. */ +#define NLM_F_ACK 4 /* If operation succeeds, reply with ack. */ +#define NLM_F_ECHO 8 /* Echo this request. */ + +/* 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 4 + +#define NLMSG_ALIGN(len) \ + (((len) + NLMSG_ALIGNTO - 1) & ~(NLMSG_ALIGNTO - 1)) + +#define NLMSG_LENGTH(len) \ + ((len) + NLMSG_ALIGN (sizeof (struct nlmsghdr))) + +#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) > 0 && (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. */ + +struct nlmsgerr + { + int error; + struct nlmsghdr msg; + }; + +#define NET_MAJOR 36 /* Major 36 is reserved for networking */ + +#endif |