summaryrefslogtreecommitdiffstats
path: root/include/linux/net.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/net.h')
-rw-r--r--include/linux/net.h287
1 files changed, 287 insertions, 0 deletions
diff --git a/include/linux/net.h b/include/linux/net.h
new file mode 100644
index 0000000..7823b34
--- /dev/null
+++ b/include/linux/net.h
@@ -0,0 +1,287 @@
+/*
+ * 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, <bir7@leland.Stanford.Edu>
+ * 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/config.h>
+#include <linux/wait.h>
+#include <linux/stringify.h>
+#include <asm/socket.h>
+
+struct poll_table_struct;
+struct inode;
+
+#define NPROTO 32 /* should be enough for now.. */
+
+#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) */
+
+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__
+
+#define SOCK_ASYNC_NOSPACE 0
+#define SOCK_ASYNC_WAITDATA 1
+#define SOCK_NOSPACE 2
+#define SOCK_PASSCRED 3
+
+#ifndef ARCH_HAS_SOCKET_TYPES
+/** sock_type - Socket types
+ *
+ * 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.
+ *
+ * @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_PACKET - linux specific way of getting packets at the dev level.
+ * For writing rarp and other similar things on the user level.
+ */
+enum sock_type {
+ SOCK_STREAM = 1,
+ SOCK_DGRAM = 2,
+ SOCK_RAW = 3,
+ SOCK_RDM = 4,
+ SOCK_SEQPACKET = 5,
+ SOCK_PACKET = 10,
+};
+
+#define SOCK_MAX (SOCK_PACKET + 1)
+
+#endif /* ARCH_HAS_SOCKET_TYPES */
+
+/**
+ * struct socket - general BSD socket
+ * @state - socket state (%SS_CONNECTED, 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
+ * @type - socket type (%SOCK_STREAM, etc)
+ * @passcred - credentials (used only in Unix Sockets (aka PF_LOCAL))
+ */
+struct socket {
+ socket_state state;
+ unsigned long flags;
+ struct proto_ops *ops;
+ struct fasync_struct *fasync_list;
+ struct file *file;
+ struct sock *sk;
+ wait_queue_head_t wait;
+ short type;
+};
+
+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 (*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, int optlen);
+ int (*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);
+};
+
+struct net_proto_family {
+ int family;
+ int (*create)(struct socket *sock, int protocol);
+ /* These are counters for the number of different methods of
+ each we support */
+ short authentication;
+ short encryption;
+ short encrypt_net;
+ struct module *owner;
+};
+
+struct iovec;
+struct kvec;
+
+extern int sock_wake_async(struct socket *sk, int how, int band);
+extern int sock_register(struct net_proto_family *fam);
+extern int 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);
+extern struct socket *sockfd_lookup(int fd, int *err);
+#define sockfd_put(sock) fput(sock->file)
+extern int net_ratelimit(void);
+extern unsigned long net_random(void);
+extern void net_srandom(unsigned long);
+extern void net_random_init(void);
+
+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);
+
+#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, 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, 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 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, \
+ .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))
+
+#endif /* __KERNEL__ */
+#endif /* _LINUX_NET_H */
OpenPOWER on IntegriCloud