Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * NET An implementation of the SOCKET network access protocol. |
| 3 | * This is the master header file for the Linux NET layer, |
| 4 | * or, in plain English: the networking handling part of the |
| 5 | * kernel. |
| 6 | * |
| 7 | * Version: @(#)net.h 1.0.3 05/25/93 |
| 8 | * |
| 9 | * Authors: Orest Zborowski, <obz@Kodak.COM> |
Jesper Juhl | 02c30a8 | 2005-05-05 16:16:16 -0700 | [diff] [blame] | 10 | * Ross Biro |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or |
| 14 | * modify it under the terms of the GNU General Public License |
| 15 | * as published by the Free Software Foundation; either version |
| 16 | * 2 of the License, or (at your option) any later version. |
| 17 | */ |
| 18 | #ifndef _LINUX_NET_H |
| 19 | #define _LINUX_NET_H |
| 20 | |
David Woodhouse | eacf17b | 2006-04-25 14:46:09 +0100 | [diff] [blame] | 21 | #include <linux/stringify.h> |
David Woodhouse | cb4db4c | 2006-12-28 21:21:55 -0800 | [diff] [blame] | 22 | #include <linux/random.h> |
David Woodhouse | 5770a3f | 2008-08-26 15:29:22 +0100 | [diff] [blame] | 23 | #include <linux/wait.h> |
| 24 | #include <linux/fcntl.h> /* For O_CLOEXEC and O_NONBLOCK */ |
Eric Dumazet | 4381548 | 2010-04-29 11:01:49 +0000 | [diff] [blame] | 25 | #include <linux/rcupdate.h> |
Hannes Frederic Sowa | 4623425 | 2015-10-08 01:20:35 +0200 | [diff] [blame] | 26 | #include <linux/once.h> |
Tom Herbert | 0294b62 | 2016-08-28 14:43:17 -0700 | [diff] [blame] | 27 | #include <linux/fs.h> |
Hannes Frederic Sowa | 4623425 | 2015-10-08 01:20:35 +0200 | [diff] [blame] | 28 | |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 29 | #include <uapi/linux/net.h> |
David Woodhouse | 5770a3f | 2008-08-26 15:29:22 +0100 | [diff] [blame] | 30 | |
| 31 | struct poll_table_struct; |
| 32 | struct pipe_inode_info; |
| 33 | struct inode; |
Al Viro | 56b31d1 | 2012-08-18 00:25:51 -0400 | [diff] [blame] | 34 | struct file; |
David Woodhouse | 5770a3f | 2008-08-26 15:29:22 +0100 | [diff] [blame] | 35 | struct net; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
Eric Dumazet | ceb5d58 | 2015-11-29 20:03:11 -0800 | [diff] [blame] | 37 | /* Historically, SOCKWQ_ASYNC_NOSPACE & SOCKWQ_ASYNC_WAITDATA were located |
| 38 | * in sock->flags, but moved into sk->sk_wq->flags to be RCU protected. |
Tonghao Zhang | b3dc8f7 | 2017-08-15 04:28:54 -0700 | [diff] [blame] | 39 | * Eventually all flags will be in sk->sk_wq->flags. |
Eric Dumazet | ceb5d58 | 2015-11-29 20:03:11 -0800 | [diff] [blame] | 40 | */ |
Eric Dumazet | 9cd3e07 | 2015-11-29 20:03:10 -0800 | [diff] [blame] | 41 | #define SOCKWQ_ASYNC_NOSPACE 0 |
| 42 | #define SOCKWQ_ASYNC_WAITDATA 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #define SOCK_NOSPACE 2 |
| 44 | #define SOCK_PASSCRED 3 |
Catherine Zhang | 877ce7c | 2006-06-29 12:27:47 -0700 | [diff] [blame] | 45 | #define SOCK_PASSSEC 4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
| 47 | #ifndef ARCH_HAS_SOCKET_TYPES |
Pavel Pisa | 4dc3b16 | 2005-05-01 08:59:25 -0700 | [diff] [blame] | 48 | /** |
| 49 | * enum sock_type - Socket types |
| 50 | * @SOCK_STREAM: stream (connection) socket |
| 51 | * @SOCK_DGRAM: datagram (conn.less) socket |
| 52 | * @SOCK_RAW: raw socket |
| 53 | * @SOCK_RDM: reliably-delivered message |
| 54 | * @SOCK_SEQPACKET: sequential packet socket |
Randy Dunlap | 8f2709b | 2005-11-07 01:01:05 -0800 | [diff] [blame] | 55 | * @SOCK_DCCP: Datagram Congestion Control Protocol socket |
Pavel Pisa | 4dc3b16 | 2005-05-01 08:59:25 -0700 | [diff] [blame] | 56 | * @SOCK_PACKET: linux specific way of getting packets at the dev level. |
| 57 | * For writing rarp and other similar things on the user level. |
| 58 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | * When adding some new socket type please |
| 60 | * grep ARCH_HAS_SOCKET_TYPE include/asm-* /socket.h, at least MIPS |
| 61 | * overrides this enum for binary compat reasons. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | */ |
| 63 | enum sock_type { |
| 64 | SOCK_STREAM = 1, |
| 65 | SOCK_DGRAM = 2, |
| 66 | SOCK_RAW = 3, |
| 67 | SOCK_RDM = 4, |
| 68 | SOCK_SEQPACKET = 5, |
Arnaldo Carvalho de Melo | 7c65787 | 2005-08-09 20:14:34 -0700 | [diff] [blame] | 69 | SOCK_DCCP = 6, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | SOCK_PACKET = 10, |
| 71 | }; |
| 72 | |
| 73 | #define SOCK_MAX (SOCK_PACKET + 1) |
Ulrich Drepper | a677a03 | 2008-07-23 21:29:17 -0700 | [diff] [blame] | 74 | /* Mask which covers at least up to SOCK_MASK-1. The |
| 75 | * remaining bits are used as flags. */ |
| 76 | #define SOCK_TYPE_MASK 0xf |
| 77 | |
Ulrich Drepper | de11def | 2008-11-19 15:36:14 -0800 | [diff] [blame] | 78 | /* Flags for socket, socketpair, accept4 */ |
Ulrich Drepper | a677a03 | 2008-07-23 21:29:17 -0700 | [diff] [blame] | 79 | #define SOCK_CLOEXEC O_CLOEXEC |
Ulrich Drepper | c019bbc | 2008-07-23 21:29:21 -0700 | [diff] [blame] | 80 | #ifndef SOCK_NONBLOCK |
| 81 | #define SOCK_NONBLOCK O_NONBLOCK |
| 82 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | |
| 84 | #endif /* ARCH_HAS_SOCKET_TYPES */ |
| 85 | |
Trond Myklebust | 91cf45f | 2007-11-12 18:10:39 -0800 | [diff] [blame] | 86 | enum sock_shutdown_cmd { |
Jean Sacren | 0e9649c | 2013-06-01 16:23:16 +0000 | [diff] [blame] | 87 | SHUT_RD, |
| 88 | SHUT_WR, |
| 89 | SHUT_RDWR, |
Trond Myklebust | 91cf45f | 2007-11-12 18:10:39 -0800 | [diff] [blame] | 90 | }; |
| 91 | |
Eric Dumazet | 4381548 | 2010-04-29 11:01:49 +0000 | [diff] [blame] | 92 | struct socket_wq { |
Eric Dumazet | eaefd11 | 2011-02-18 03:26:36 +0000 | [diff] [blame] | 93 | /* Note: wait MUST be first field of socket_wq */ |
Eric Dumazet | 4381548 | 2010-04-29 11:01:49 +0000 | [diff] [blame] | 94 | wait_queue_head_t wait; |
| 95 | struct fasync_struct *fasync_list; |
Eric Dumazet | ceb5d58 | 2015-11-29 20:03:11 -0800 | [diff] [blame] | 96 | unsigned long flags; /* %SOCKWQ_ASYNC_NOSPACE, etc */ |
Eric Dumazet | 4381548 | 2010-04-29 11:01:49 +0000 | [diff] [blame] | 97 | struct rcu_head rcu; |
| 98 | } ____cacheline_aligned_in_smp; |
| 99 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | /** |
| 101 | * struct socket - general BSD socket |
Pavel Pisa | 4dc3b16 | 2005-05-01 08:59:25 -0700 | [diff] [blame] | 102 | * @state: socket state (%SS_CONNECTED, etc) |
Richard Kennedy | 2c69361 | 2008-07-08 03:03:01 -0700 | [diff] [blame] | 103 | * @type: socket type (%SOCK_STREAM, etc) |
Eric Dumazet | 9cd3e07 | 2015-11-29 20:03:10 -0800 | [diff] [blame] | 104 | * @flags: socket flags (%SOCK_NOSPACE, etc) |
Pavel Pisa | 4dc3b16 | 2005-05-01 08:59:25 -0700 | [diff] [blame] | 105 | * @ops: protocol specific socket operations |
Pavel Pisa | 4dc3b16 | 2005-05-01 08:59:25 -0700 | [diff] [blame] | 106 | * @file: File back pointer for gc |
| 107 | * @sk: internal networking protocol agnostic socket representation |
Randy Dunlap | e2aec37 | 2010-07-01 13:18:58 +0000 | [diff] [blame] | 108 | * @wq: wait queue for several uses |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | */ |
| 110 | struct socket { |
| 111 | socket_state state; |
Eric Dumazet | 29a020d | 2009-09-15 02:39:20 -0700 | [diff] [blame] | 112 | |
Richard Kennedy | 2c69361 | 2008-07-08 03:03:01 -0700 | [diff] [blame] | 113 | short type; |
Eric Dumazet | 29a020d | 2009-09-15 02:39:20 -0700 | [diff] [blame] | 114 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | unsigned long flags; |
Eric Dumazet | 4381548 | 2010-04-29 11:01:49 +0000 | [diff] [blame] | 116 | |
Eric Dumazet | eaefd11 | 2011-02-18 03:26:36 +0000 | [diff] [blame] | 117 | struct socket_wq __rcu *wq; |
Eric Dumazet | 8bdd663 | 2009-03-15 19:59:13 -0700 | [diff] [blame] | 118 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | struct file *file; |
| 120 | struct sock *sk; |
Eric Dumazet | 8bdd663 | 2009-03-15 19:59:13 -0700 | [diff] [blame] | 121 | const struct proto_ops *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | }; |
| 123 | |
| 124 | struct vm_area_struct; |
| 125 | struct page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | struct sockaddr; |
| 127 | struct msghdr; |
| 128 | struct module; |
Tom Herbert | 0294b62 | 2016-08-28 14:43:17 -0700 | [diff] [blame] | 129 | struct sk_buff; |
| 130 | typedef int (*sk_read_actor_t)(read_descriptor_t *, struct sk_buff *, |
| 131 | unsigned int, size_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | |
| 133 | struct proto_ops { |
| 134 | int family; |
| 135 | struct module *owner; |
| 136 | int (*release) (struct socket *sock); |
| 137 | int (*bind) (struct socket *sock, |
| 138 | struct sockaddr *myaddr, |
| 139 | int sockaddr_len); |
| 140 | int (*connect) (struct socket *sock, |
| 141 | struct sockaddr *vaddr, |
| 142 | int sockaddr_len, int flags); |
| 143 | int (*socketpair)(struct socket *sock1, |
| 144 | struct socket *sock2); |
| 145 | int (*accept) (struct socket *sock, |
David Howells | cdfbabf | 2017-03-09 08:09:05 +0000 | [diff] [blame] | 146 | struct socket *newsock, int flags, bool kern); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | int (*getname) (struct socket *sock, |
| 148 | struct sockaddr *addr, |
| 149 | int *sockaddr_len, int peer); |
| 150 | unsigned int (*poll) (struct file *file, struct socket *sock, |
| 151 | struct poll_table_struct *wait); |
| 152 | int (*ioctl) (struct socket *sock, unsigned int cmd, |
| 153 | unsigned long arg); |
Alexey Dobriyan | 1621e09 | 2010-02-01 09:44:19 +0000 | [diff] [blame] | 154 | #ifdef CONFIG_COMPAT |
Shaun Pereira | 89bbfc9 | 2006-03-21 23:58:08 -0800 | [diff] [blame] | 155 | int (*compat_ioctl) (struct socket *sock, unsigned int cmd, |
| 156 | unsigned long arg); |
Alexey Dobriyan | 1621e09 | 2010-02-01 09:44:19 +0000 | [diff] [blame] | 157 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | int (*listen) (struct socket *sock, int len); |
| 159 | int (*shutdown) (struct socket *sock, int flags); |
| 160 | int (*setsockopt)(struct socket *sock, int level, |
David S. Miller | b705884 | 2009-09-30 16:12:20 -0700 | [diff] [blame] | 161 | int optname, char __user *optval, unsigned int optlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | int (*getsockopt)(struct socket *sock, int level, |
| 163 | int optname, char __user *optval, int __user *optlen); |
Alexey Dobriyan | 1621e09 | 2010-02-01 09:44:19 +0000 | [diff] [blame] | 164 | #ifdef CONFIG_COMPAT |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 165 | int (*compat_setsockopt)(struct socket *sock, int level, |
David S. Miller | b705884 | 2009-09-30 16:12:20 -0700 | [diff] [blame] | 166 | int optname, char __user *optval, unsigned int optlen); |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 167 | int (*compat_getsockopt)(struct socket *sock, int level, |
| 168 | int optname, char __user *optval, int __user *optlen); |
Alexey Dobriyan | 1621e09 | 2010-02-01 09:44:19 +0000 | [diff] [blame] | 169 | #endif |
Ying Xue | 1b78414 | 2015-03-02 15:37:48 +0800 | [diff] [blame] | 170 | int (*sendmsg) (struct socket *sock, struct msghdr *m, |
| 171 | size_t total_len); |
Hannes Frederic Sowa | f3d3342 | 2013-11-21 03:14:22 +0100 | [diff] [blame] | 172 | /* Notes for implementing recvmsg: |
| 173 | * =============================== |
| 174 | * msg->msg_namelen should get updated by the recvmsg handlers |
| 175 | * iff msg_name != NULL. It is by default 0 to prevent |
| 176 | * returning uninitialized memory to user space. The recvfrom |
| 177 | * handlers can assume that msg.msg_name is either NULL or has |
| 178 | * a minimum size of sizeof(struct sockaddr_storage). |
| 179 | */ |
Ying Xue | 1b78414 | 2015-03-02 15:37:48 +0800 | [diff] [blame] | 180 | int (*recvmsg) (struct socket *sock, struct msghdr *m, |
| 181 | size_t total_len, int flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | int (*mmap) (struct file *file, struct socket *sock, |
| 183 | struct vm_area_struct * vma); |
| 184 | ssize_t (*sendpage) (struct socket *sock, struct page *page, |
| 185 | int offset, size_t size, int flags); |
Jens Axboe | 9c55e01 | 2007-11-06 23:30:13 -0800 | [diff] [blame] | 186 | ssize_t (*splice_read)(struct socket *sock, loff_t *ppos, |
| 187 | struct pipe_inode_info *pipe, size_t len, unsigned int flags); |
Sasha Levin | 12663bf | 2013-12-07 17:26:27 -0500 | [diff] [blame] | 188 | int (*set_peek_off)(struct sock *sk, int val); |
Jason Wang | 1576d98 | 2016-06-30 14:45:36 +0800 | [diff] [blame] | 189 | int (*peek_len)(struct socket *sock); |
Tom Herbert | 306b13e | 2017-07-28 16:22:41 -0700 | [diff] [blame] | 190 | |
| 191 | /* The following functions are called internally by kernel with |
| 192 | * sock lock already held. |
| 193 | */ |
Tom Herbert | 0294b62 | 2016-08-28 14:43:17 -0700 | [diff] [blame] | 194 | int (*read_sock)(struct sock *sk, read_descriptor_t *desc, |
| 195 | sk_read_actor_t recv_actor); |
Tom Herbert | 306b13e | 2017-07-28 16:22:41 -0700 | [diff] [blame] | 196 | int (*sendpage_locked)(struct sock *sk, struct page *page, |
| 197 | int offset, size_t size, int flags); |
| 198 | int (*sendmsg_locked)(struct sock *sk, struct msghdr *msg, |
| 199 | size_t size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | }; |
| 201 | |
Cyrill Gorcunov | 38bfd8f | 2009-10-29 02:59:18 -0700 | [diff] [blame] | 202 | #define DECLARE_SOCKADDR(type, dst, src) \ |
| 203 | type dst = ({ __sockaddr_check_size(sizeof(*dst)); (type) src; }) |
| 204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | struct net_proto_family { |
| 206 | int family; |
Eric Paris | 3f378b6 | 2009-11-05 22:18:14 -0800 | [diff] [blame] | 207 | int (*create)(struct net *net, struct socket *sock, |
| 208 | int protocol, int kern); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | struct module *owner; |
| 210 | }; |
| 211 | |
| 212 | struct iovec; |
| 213 | struct kvec; |
| 214 | |
Pavel Emelyanov | 8d8ad9d | 2007-11-26 20:10:50 +0800 | [diff] [blame] | 215 | enum { |
| 216 | SOCK_WAKE_IO, |
| 217 | SOCK_WAKE_WAITD, |
| 218 | SOCK_WAKE_SPACE, |
| 219 | SOCK_WAKE_URG, |
| 220 | }; |
| 221 | |
Eric Dumazet | ceb5d58 | 2015-11-29 20:03:11 -0800 | [diff] [blame] | 222 | int sock_wake_async(struct socket_wq *sk_wq, int how, int band); |
Joe Perches | 7965bd4 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 223 | int sock_register(const struct net_proto_family *fam); |
| 224 | void sock_unregister(int family); |
Xin Long | c4d2af7 | 2018-03-10 18:57:50 +0800 | [diff] [blame] | 225 | bool sock_is_registered(int family); |
Joe Perches | 7965bd4 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 226 | int __sock_create(struct net *net, int family, int type, int proto, |
| 227 | struct socket **res, int kern); |
| 228 | int sock_create(int family, int type, int proto, struct socket **res); |
Eric W. Biederman | eeb1bd5 | 2015-05-08 21:08:05 -0500 | [diff] [blame] | 229 | int sock_create_kern(struct net *net, int family, int type, int proto, struct socket **res); |
Joe Perches | 7965bd4 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 230 | int sock_create_lite(int family, int type, int proto, struct socket **res); |
Tom Herbert | f4a00aa | 2016-03-07 14:11:01 -0800 | [diff] [blame] | 231 | struct socket *sock_alloc(void); |
Joe Perches | 7965bd4 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 232 | void sock_release(struct socket *sock); |
Al Viro | d8725c8 | 2014-12-11 00:02:50 -0500 | [diff] [blame] | 233 | int sock_sendmsg(struct socket *sock, struct msghdr *msg); |
Al Viro | 2da6290 | 2015-03-14 21:13:46 -0400 | [diff] [blame] | 234 | int sock_recvmsg(struct socket *sock, struct msghdr *msg, int flags); |
Joe Perches | 7965bd4 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 235 | struct file *sock_alloc_file(struct socket *sock, int flags, const char *dname); |
| 236 | struct socket *sockfd_lookup(int fd, int *err); |
| 237 | struct socket *sock_from_file(struct file *file, int *err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | #define sockfd_put(sock) fput(sock->file) |
Joe Perches | 7965bd4 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 239 | int net_ratelimit(void); |
Stephen Hemminger | aaa248f | 2006-10-17 00:09:42 -0700 | [diff] [blame] | 240 | |
Joe Perches | 3a3bfb6 | 2012-05-13 21:56:25 +0000 | [diff] [blame] | 241 | #define net_ratelimited_function(function, ...) \ |
| 242 | do { \ |
| 243 | if (net_ratelimit()) \ |
| 244 | function(__VA_ARGS__); \ |
| 245 | } while (0) |
| 246 | |
| 247 | #define net_emerg_ratelimited(fmt, ...) \ |
| 248 | net_ratelimited_function(pr_emerg, fmt, ##__VA_ARGS__) |
| 249 | #define net_alert_ratelimited(fmt, ...) \ |
| 250 | net_ratelimited_function(pr_alert, fmt, ##__VA_ARGS__) |
| 251 | #define net_crit_ratelimited(fmt, ...) \ |
| 252 | net_ratelimited_function(pr_crit, fmt, ##__VA_ARGS__) |
| 253 | #define net_err_ratelimited(fmt, ...) \ |
| 254 | net_ratelimited_function(pr_err, fmt, ##__VA_ARGS__) |
| 255 | #define net_notice_ratelimited(fmt, ...) \ |
| 256 | net_ratelimited_function(pr_notice, fmt, ##__VA_ARGS__) |
| 257 | #define net_warn_ratelimited(fmt, ...) \ |
| 258 | net_ratelimited_function(pr_warn, fmt, ##__VA_ARGS__) |
| 259 | #define net_info_ratelimited(fmt, ...) \ |
| 260 | net_ratelimited_function(pr_info, fmt, ##__VA_ARGS__) |
Tim Bingham | 2c94b53 | 2016-04-29 13:30:23 -0400 | [diff] [blame] | 261 | #if defined(CONFIG_DYNAMIC_DEBUG) |
| 262 | #define net_dbg_ratelimited(fmt, ...) \ |
| 263 | do { \ |
| 264 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ |
| 265 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT) && \ |
| 266 | net_ratelimit()) \ |
Jason A. Donenfeld | daddef7 | 2016-06-15 11:14:53 +0200 | [diff] [blame] | 267 | __dynamic_pr_debug(&descriptor, pr_fmt(fmt), \ |
| 268 | ##__VA_ARGS__); \ |
Tim Bingham | 2c94b53 | 2016-04-29 13:30:23 -0400 | [diff] [blame] | 269 | } while (0) |
| 270 | #elif defined(DEBUG) |
Joe Perches | 3a3bfb6 | 2012-05-13 21:56:25 +0000 | [diff] [blame] | 271 | #define net_dbg_ratelimited(fmt, ...) \ |
| 272 | net_ratelimited_function(pr_debug, fmt, ##__VA_ARGS__) |
Jason A. Donenfeld | d92cff8 | 2015-08-04 18:26:19 +0200 | [diff] [blame] | 273 | #else |
| 274 | #define net_dbg_ratelimited(fmt, ...) \ |
| 275 | do { \ |
| 276 | if (0) \ |
| 277 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \ |
| 278 | } while (0) |
| 279 | #endif |
Joe Perches | 3a3bfb6 | 2012-05-13 21:56:25 +0000 | [diff] [blame] | 280 | |
Hannes Frederic Sowa | 4623425 | 2015-10-08 01:20:35 +0200 | [diff] [blame] | 281 | #define net_get_random_once(buf, nbytes) \ |
| 282 | get_random_once((buf), (nbytes)) |
Jason A. Donenfeld | da9ba56 | 2017-06-07 20:05:02 -0400 | [diff] [blame] | 283 | #define net_get_random_once_wait(buf, nbytes) \ |
| 284 | get_random_once_wait((buf), (nbytes)) |
Hannes Frederic Sowa | a48e429 | 2013-10-19 21:48:55 +0200 | [diff] [blame] | 285 | |
Joe Perches | 7965bd4 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 286 | int kernel_sendmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec, |
| 287 | size_t num, size_t len); |
Tom Herbert | 306b13e | 2017-07-28 16:22:41 -0700 | [diff] [blame] | 288 | int kernel_sendmsg_locked(struct sock *sk, struct msghdr *msg, |
| 289 | struct kvec *vec, size_t num, size_t len); |
Joe Perches | 7965bd4 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 290 | int kernel_recvmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec, |
| 291 | size_t num, size_t len, int flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
Joe Perches | 7965bd4 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 293 | int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen); |
| 294 | int kernel_listen(struct socket *sock, int backlog); |
| 295 | int kernel_accept(struct socket *sock, struct socket **newsock, int flags); |
| 296 | int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen, |
| 297 | int flags); |
| 298 | int kernel_getsockname(struct socket *sock, struct sockaddr *addr, |
| 299 | int *addrlen); |
| 300 | int kernel_getpeername(struct socket *sock, struct sockaddr *addr, |
| 301 | int *addrlen); |
| 302 | int kernel_getsockopt(struct socket *sock, int level, int optname, char *optval, |
| 303 | int *optlen); |
| 304 | int kernel_setsockopt(struct socket *sock, int level, int optname, char *optval, |
| 305 | unsigned int optlen); |
| 306 | int kernel_sendpage(struct socket *sock, struct page *page, int offset, |
| 307 | size_t size, int flags); |
Tom Herbert | 306b13e | 2017-07-28 16:22:41 -0700 | [diff] [blame] | 308 | int kernel_sendpage_locked(struct sock *sk, struct page *page, int offset, |
| 309 | size_t size, int flags); |
Joe Perches | 7965bd4 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 310 | int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg); |
| 311 | int kernel_sock_shutdown(struct socket *sock, enum sock_shutdown_cmd how); |
Sridhar Samudrala | ac5a488 | 2006-08-07 20:57:31 -0700 | [diff] [blame] | 312 | |
R. Parameswaran | 57240d0 | 2017-04-12 18:31:04 -0700 | [diff] [blame] | 313 | /* Routine returns the IP overhead imposed by a (caller-protected) socket. */ |
R. Parameswaran | 113c307 | 2017-04-05 16:50:35 -0700 | [diff] [blame] | 314 | u32 kernel_sock_ip_overhead(struct sock *sk); |
| 315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | #define MODULE_ALIAS_NETPROTO(proto) \ |
| 317 | MODULE_ALIAS("net-pf-" __stringify(proto)) |
| 318 | |
Harald Welte | 4fdb3bb | 2005-08-09 19:40:55 -0700 | [diff] [blame] | 319 | #define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \ |
| 320 | MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto)) |
| 321 | |
Jean Delvare | 305e1e9 | 2007-10-21 16:44:04 -0700 | [diff] [blame] | 322 | #define MODULE_ALIAS_NET_PF_PROTO_TYPE(pf, proto, type) \ |
| 323 | MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \ |
| 324 | "-type-" __stringify(type)) |
| 325 | |
Neil Horman | 2033e9b | 2012-05-29 09:30:40 +0000 | [diff] [blame] | 326 | #define MODULE_ALIAS_NET_PF_PROTO_NAME(pf, proto, name) \ |
| 327 | MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \ |
| 328 | name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | #endif /* _LINUX_NET_H */ |