| /* |
| * NET An implementation of the SOCKET network access protocol. |
| * This is the master header file for the Linux NET layer, |
| * or, in plain English: the networking handling part of the |
| * kernel. |
| * |
| * Version: @(#)net.h 1.0.3 05/25/93 |
| * |
| * Authors: Orest Zborowski, <obz@Kodak.COM> |
| * Ross Biro |
| * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| #ifndef _LINUX_NET_H |
| #define _LINUX_NET_H |
| |
| #include <linux/socket.h> |
| #include <asm/socket.h> |
| |
| #define NPROTO AF_MAX |
| |
| #define SYS_SOCKET 1 /* sys_socket(2) */ |
| #define SYS_BIND 2 /* sys_bind(2) */ |
| #define SYS_CONNECT 3 /* sys_connect(2) */ |
| #define SYS_LISTEN 4 /* sys_listen(2) */ |
| #define SYS_ACCEPT 5 /* sys_accept(2) */ |
| #define SYS_GETSOCKNAME 6 /* sys_getsockname(2) */ |
| #define SYS_GETPEERNAME 7 /* sys_getpeername(2) */ |
| #define SYS_SOCKETPAIR 8 /* sys_socketpair(2) */ |
| #define SYS_SEND 9 /* sys_send(2) */ |
| #define SYS_RECV 10 /* sys_recv(2) */ |
| #define SYS_SENDTO 11 /* sys_sendto(2) */ |
| #define SYS_RECVFROM 12 /* sys_recvfrom(2) */ |
| #define SYS_SHUTDOWN 13 /* sys_shutdown(2) */ |
| #define SYS_SETSOCKOPT 14 /* sys_setsockopt(2) */ |
| #define SYS_GETSOCKOPT 15 /* sys_getsockopt(2) */ |
| #define SYS_SENDMSG 16 /* sys_sendmsg(2) */ |
| #define SYS_RECVMSG 17 /* sys_recvmsg(2) */ |
| #define SYS_ACCEPT4 18 /* sys_accept4(2) */ |
| #define SYS_RECVMMSG 19 /* sys_recvmmsg(2) */ |
| |
| typedef enum { |
| SS_FREE = 0, /* not allocated */ |
| SS_UNCONNECTED, /* unconnected to any socket */ |
| SS_CONNECTING, /* in process of connecting */ |
| SS_CONNECTED, /* connected to socket */ |
| SS_DISCONNECTING /* in process of disconnecting */ |
| } socket_state; |
| |
| #define __SO_ACCEPTCON (1 << 16) /* performed a listen */ |
| |
| #ifdef __KERNEL__ |
| #include <linux/stringify.h> |
| #include <linux/random.h> |
| #include <linux/wait.h> |
| #include <linux/fcntl.h> /* For O_CLOEXEC and O_NONBLOCK */ |
| #include <linux/kmemcheck.h> |
| |
| struct poll_table_struct; |
| struct pipe_inode_info; |
| struct inode; |
| struct net; |
| |
| #define SOCK_ASYNC_NOSPACE 0 |
| #define SOCK_ASYNC_WAITDATA 1 |
| #define SOCK_NOSPACE 2 |
| #define SOCK_PASSCRED 3 |
| #define SOCK_PASSSEC 4 |
| |
| #ifndef ARCH_HAS_SOCKET_TYPES |
| /** |
| * enum sock_type - Socket types |
| * @SOCK_STREAM: stream (connection) socket |
| * @SOCK_DGRAM: datagram (conn.less) socket |
| * @SOCK_RAW: raw socket |
| * @SOCK_RDM: reliably-delivered message |
| * @SOCK_SEQPACKET: sequential packet socket |
| * @SOCK_DCCP: Datagram Congestion Control Protocol socket |
| * @SOCK_PACKET: linux specific way of getting packets at the dev level. |
| * For writing rarp and other similar things on the user level. |
| * |
| * When adding some new socket type please |
| * grep ARCH_HAS_SOCKET_TYPE include/asm-* /socket.h, at least MIPS |
| * overrides this enum for binary compat reasons. |
| */ |
| enum sock_type { |
| SOCK_STREAM = 1, |
| SOCK_DGRAM = 2, |
| SOCK_RAW = 3, |
| SOCK_RDM = 4, |
| SOCK_SEQPACKET = 5, |
| SOCK_DCCP = 6, |
| SOCK_PACKET = 10, |
| }; |
| |
| #define SOCK_MAX (SOCK_PACKET + 1) |
| /* Mask which covers at least up to SOCK_MASK-1. The |
| * remaining bits are used as flags. */ |
| #define SOCK_TYPE_MASK 0xf |
| |
| /* Flags for socket, socketpair, accept4 */ |
| #define SOCK_CLOEXEC O_CLOEXEC |
| #ifndef SOCK_NONBLOCK |
| #define SOCK_NONBLOCK O_NONBLOCK |
| #endif |
| |
| #endif /* ARCH_HAS_SOCKET_TYPES */ |
| |
| enum sock_shutdown_cmd { |
| SHUT_RD = 0, |
| SHUT_WR = 1, |
| SHUT_RDWR = 2, |
| }; |
| |
| /** |
| * struct socket - general BSD socket |
| * @state: socket state (%SS_CONNECTED, etc) |
| * @type: socket type (%SOCK_STREAM, etc) |
| * @flags: socket flags (%SOCK_ASYNC_NOSPACE, etc) |
| * @ops: protocol specific socket operations |
| * @fasync_list: Asynchronous wake up list |
| * @file: File back pointer for gc |
| * @sk: internal networking protocol agnostic socket representation |
| * @wait: wait queue for several uses |
| */ |
| struct socket { |
| socket_state state; |
| |
| kmemcheck_bitfield_begin(type); |
| short type; |
| kmemcheck_bitfield_end(type); |
| |
| unsigned long flags; |
| /* |
| * Please keep fasync_list & wait fields in the same cache line |
| */ |
| struct fasync_struct *fasync_list; |
| wait_queue_head_t wait; |
| |
| struct file *file; |
| struct sock *sk; |
| const struct proto_ops *ops; |
| }; |
| |
| struct vm_area_struct; |
| struct page; |
| struct kiocb; |
| struct sockaddr; |
| struct msghdr; |
| struct module; |
| |
| struct proto_ops { |
| int family; |
| struct module *owner; |
| int (*release) (struct socket *sock); |
| int (*bind) (struct socket *sock, |
| struct sockaddr *myaddr, |
| int sockaddr_len); |
| int (*connect) (struct socket *sock, |
| struct sockaddr *vaddr, |
| int sockaddr_len, int flags); |
| int (*socketpair)(struct socket *sock1, |
| struct socket *sock2); |
| int (*accept) (struct socket *sock, |
| struct socket *newsock, int flags); |
| int (*getname) (struct socket *sock, |
| struct sockaddr *addr, |
| int *sockaddr_len, int peer); |
| unsigned int (*poll) (struct file *file, struct socket *sock, |
| struct poll_table_struct *wait); |
| int (*ioctl) (struct socket *sock, unsigned int cmd, |
| unsigned long arg); |
| int (*compat_ioctl) (struct socket *sock, unsigned int cmd, |
| unsigned long arg); |
| int (*listen) (struct socket *sock, int len); |
| int (*shutdown) (struct socket *sock, int flags); |
| int (*setsockopt)(struct socket *sock, int level, |
| int optname, char __user *optval, unsigned int optlen); |
| int (*getsockopt)(struct socket *sock, int level, |
| int optname, char __user *optval, int __user *optlen); |
| int (*compat_setsockopt)(struct socket *sock, int level, |
| int optname, char __user *optval, unsigned int optlen); |
| int (*compat_getsockopt)(struct socket *sock, int level, |
| int optname, char __user *optval, int __user *optlen); |
| int (*sendmsg) (struct kiocb *iocb, struct socket *sock, |
| struct msghdr *m, size_t total_len); |
| int (*recvmsg) (struct kiocb *iocb, struct socket *sock, |
| struct msghdr *m, size_t total_len, |
| int flags); |
| int (*mmap) (struct file *file, struct socket *sock, |
| struct vm_area_struct * vma); |
| ssize_t (*sendpage) (struct socket *sock, struct page *page, |
| int offset, size_t size, int flags); |
| ssize_t (*splice_read)(struct socket *sock, loff_t *ppos, |
| struct pipe_inode_info *pipe, size_t len, unsigned int flags); |
| }; |
| |
| #define DECLARE_SOCKADDR(type, dst, src) \ |
| type dst = ({ __sockaddr_check_size(sizeof(*dst)); (type) src; }) |
| |
| struct net_proto_family { |
| int family; |
| int (*create)(struct net *net, struct socket *sock, int protocol); |
| struct module *owner; |
| }; |
| |
| struct iovec; |
| struct kvec; |
| |
| enum { |
| SOCK_WAKE_IO, |
| SOCK_WAKE_WAITD, |
| SOCK_WAKE_SPACE, |
| SOCK_WAKE_URG, |
| }; |
| |
| extern int sock_wake_async(struct socket *sk, int how, int band); |
| extern int sock_register(const struct net_proto_family *fam); |
| extern void sock_unregister(int family); |
| extern int sock_create(int family, int type, int proto, |
| struct socket **res); |
| extern int sock_create_kern(int family, int type, int proto, |
| struct socket **res); |
| extern int sock_create_lite(int family, int type, int proto, |
| struct socket **res); |
| extern void sock_release(struct socket *sock); |
| extern int sock_sendmsg(struct socket *sock, struct msghdr *msg, |
| size_t len); |
| extern int sock_recvmsg(struct socket *sock, struct msghdr *msg, |
| size_t size, int flags); |
| extern int sock_map_fd(struct socket *sock, int flags); |
| extern struct socket *sockfd_lookup(int fd, int *err); |
| #define sockfd_put(sock) fput(sock->file) |
| extern int net_ratelimit(void); |
| |
| #define net_random() random32() |
| #define net_srandom(seed) srandom32((__force u32)seed) |
| |
| extern int kernel_sendmsg(struct socket *sock, struct msghdr *msg, |
| struct kvec *vec, size_t num, size_t len); |
| extern int kernel_recvmsg(struct socket *sock, struct msghdr *msg, |
| struct kvec *vec, size_t num, |
| size_t len, int flags); |
| |
| extern int kernel_bind(struct socket *sock, struct sockaddr *addr, |
| int addrlen); |
| extern int kernel_listen(struct socket *sock, int backlog); |
| extern int kernel_accept(struct socket *sock, struct socket **newsock, |
| int flags); |
| extern int kernel_connect(struct socket *sock, struct sockaddr *addr, |
| int addrlen, int flags); |
| extern int kernel_getsockname(struct socket *sock, struct sockaddr *addr, |
| int *addrlen); |
| extern int kernel_getpeername(struct socket *sock, struct sockaddr *addr, |
| int *addrlen); |
| extern int kernel_getsockopt(struct socket *sock, int level, int optname, |
| char *optval, int *optlen); |
| extern int kernel_setsockopt(struct socket *sock, int level, int optname, |
| char *optval, unsigned int optlen); |
| extern int kernel_sendpage(struct socket *sock, struct page *page, int offset, |
| size_t size, int flags); |
| extern int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg); |
| extern int kernel_sock_shutdown(struct socket *sock, |
| enum sock_shutdown_cmd how); |
| |
| #ifndef CONFIG_SMP |
| #define SOCKOPS_WRAPPED(name) name |
| #define SOCKOPS_WRAP(name, fam) |
| #else |
| |
| #define SOCKOPS_WRAPPED(name) __unlocked_##name |
| |
| #define SOCKCALL_WRAP(name, call, parms, args) \ |
| static int __lock_##name##_##call parms \ |
| { \ |
| int ret; \ |
| lock_kernel(); \ |
| ret = __unlocked_##name##_ops.call args ;\ |
| unlock_kernel(); \ |
| return ret; \ |
| } |
| |
| #define SOCKCALL_UWRAP(name, call, parms, args) \ |
| static unsigned int __lock_##name##_##call parms \ |
| { \ |
| int ret; \ |
| lock_kernel(); \ |
| ret = __unlocked_##name##_ops.call args ;\ |
| unlock_kernel(); \ |
| return ret; \ |
| } |
| |
| |
| #define SOCKOPS_WRAP(name, fam) \ |
| SOCKCALL_WRAP(name, release, (struct socket *sock), (sock)) \ |
| SOCKCALL_WRAP(name, bind, (struct socket *sock, struct sockaddr *uaddr, int addr_len), \ |
| (sock, uaddr, addr_len)) \ |
| SOCKCALL_WRAP(name, connect, (struct socket *sock, struct sockaddr * uaddr, \ |
| int addr_len, int flags), \ |
| (sock, uaddr, addr_len, flags)) \ |
| SOCKCALL_WRAP(name, socketpair, (struct socket *sock1, struct socket *sock2), \ |
| (sock1, sock2)) \ |
| SOCKCALL_WRAP(name, accept, (struct socket *sock, struct socket *newsock, \ |
| int flags), (sock, newsock, flags)) \ |
| SOCKCALL_WRAP(name, getname, (struct socket *sock, struct sockaddr *uaddr, \ |
| int *addr_len, int peer), (sock, uaddr, addr_len, peer)) \ |
| SOCKCALL_UWRAP(name, poll, (struct file *file, struct socket *sock, struct poll_table_struct *wait), \ |
| (file, sock, wait)) \ |
| SOCKCALL_WRAP(name, ioctl, (struct socket *sock, unsigned int cmd, \ |
| unsigned long arg), (sock, cmd, arg)) \ |
| SOCKCALL_WRAP(name, compat_ioctl, (struct socket *sock, unsigned int cmd, \ |
| unsigned long arg), (sock, cmd, arg)) \ |
| SOCKCALL_WRAP(name, listen, (struct socket *sock, int len), (sock, len)) \ |
| SOCKCALL_WRAP(name, shutdown, (struct socket *sock, int flags), (sock, flags)) \ |
| SOCKCALL_WRAP(name, setsockopt, (struct socket *sock, int level, int optname, \ |
| char __user *optval, unsigned int optlen), (sock, level, optname, optval, optlen)) \ |
| SOCKCALL_WRAP(name, getsockopt, (struct socket *sock, int level, int optname, \ |
| char __user *optval, int __user *optlen), (sock, level, optname, optval, optlen)) \ |
| SOCKCALL_WRAP(name, sendmsg, (struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t len), \ |
| (iocb, sock, m, len)) \ |
| SOCKCALL_WRAP(name, recvmsg, (struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t len, int flags), \ |
| (iocb, sock, m, len, flags)) \ |
| SOCKCALL_WRAP(name, mmap, (struct file *file, struct socket *sock, struct vm_area_struct *vma), \ |
| (file, sock, vma)) \ |
| \ |
| static const struct proto_ops name##_ops = { \ |
| .family = fam, \ |
| .owner = THIS_MODULE, \ |
| .release = __lock_##name##_release, \ |
| .bind = __lock_##name##_bind, \ |
| .connect = __lock_##name##_connect, \ |
| .socketpair = __lock_##name##_socketpair, \ |
| .accept = __lock_##name##_accept, \ |
| .getname = __lock_##name##_getname, \ |
| .poll = __lock_##name##_poll, \ |
| .ioctl = __lock_##name##_ioctl, \ |
| .compat_ioctl = __lock_##name##_compat_ioctl, \ |
| .listen = __lock_##name##_listen, \ |
| .shutdown = __lock_##name##_shutdown, \ |
| .setsockopt = __lock_##name##_setsockopt, \ |
| .getsockopt = __lock_##name##_getsockopt, \ |
| .sendmsg = __lock_##name##_sendmsg, \ |
| .recvmsg = __lock_##name##_recvmsg, \ |
| .mmap = __lock_##name##_mmap, \ |
| }; |
| |
| #endif |
| |
| #define MODULE_ALIAS_NETPROTO(proto) \ |
| MODULE_ALIAS("net-pf-" __stringify(proto)) |
| |
| #define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \ |
| MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto)) |
| |
| #define MODULE_ALIAS_NET_PF_PROTO_TYPE(pf, proto, type) \ |
| MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \ |
| "-type-" __stringify(type)) |
| |
| #ifdef CONFIG_SYSCTL |
| #include <linux/sysctl.h> |
| extern struct ratelimit_state net_ratelimit_state; |
| #endif |
| |
| #endif /* __KERNEL__ */ |
| #endif /* _LINUX_NET_H */ |