tcp.c File Reference

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/poll.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/skbuff.h>
#include <linux/scatterlist.h>
#include <linux/splice.h>
#include <linux/net.h>
#include <linux/socket.h>
#include <linux/random.h>
#include <linux/bootmem.h>
#include <linux/highmem.h>
#include <linux/swap.h>
#include <linux/cache.h>
#include <linux/err.h>
#include <linux/crypto.h>
#include <linux/time.h>
#include <linux/slab.h>
#include <net/icmp.h>
#include <net/inet_common.h>
#include <net/tcp.h>
#include <net/xfrm.h>
#include <net/ip.h>
#include <net/netdma.h>
#include <net/sock.h>
#include <asm/uaccess.h>
#include <asm/ioctls.h>

Go to the source code of this file.

Data Structures
struct	tcp_splice_state
struct	tcp_cookie_secret

Macros
#define	pr_fmt(fmt)   "TCP: " fmt
#define	TCP_SECRET_1MSL   (HZ * TCP_PAWS_MSL)
#define	TCP_SECRET_2MSL   (HZ * TCP_PAWS_MSL * 2)
#define	TCP_SECRET_LIFE   (HZ * 600)

Functions
	EXPORT_SYMBOL_GPL (tcp_orphan_count)
	EXPORT_SYMBOL (sysctl_tcp_rmem)
	EXPORT_SYMBOL (sysctl_tcp_wmem)
	EXPORT_SYMBOL (tcp_memory_allocated)
	EXPORT_SYMBOL (tcp_sockets_allocated)
	EXPORT_SYMBOL (tcp_memory_pressure)
void	tcp_enter_memory_pressure (struct sock *sk)
	EXPORT_SYMBOL (tcp_enter_memory_pressure)
void	tcp_init_sock (struct sock *sk)
	EXPORT_SYMBOL (tcp_init_sock)
unsigned int	tcp_poll (struct file *file, struct socket *sock, poll_table *wait)
	EXPORT_SYMBOL (tcp_poll)
int	tcp_ioctl (struct sock *sk, int cmd, unsigned long arg)
	EXPORT_SYMBOL (tcp_ioctl)
ssize_t	tcp_splice_read (struct socket *sock, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags)
	EXPORT_SYMBOL (tcp_splice_read)
struct sk_buff *	sk_stream_alloc_skb (struct sock *sk, int size, gfp_t gfp)
int	tcp_sendpage (struct sock *sk, struct page *page, int offset, size_t size, int flags)
	EXPORT_SYMBOL (tcp_sendpage)
void	tcp_free_fastopen_req (struct tcp_sock *tp)
int	tcp_sendmsg (struct kiocb *iocb, struct sock *sk, struct msghdr *msg, size_t size)
	EXPORT_SYMBOL (tcp_sendmsg)
void	tcp_cleanup_rbuf (struct sock *sk, int copied)
int	tcp_read_sock (struct sock *sk, read_descriptor_t *desc, sk_read_actor_t recv_actor)
	EXPORT_SYMBOL (tcp_read_sock)
int	tcp_recvmsg (struct kiocb *iocb, struct sock *sk, struct msghdr *msg, size_t len, int nonblock, int flags, int *addr_len)
	EXPORT_SYMBOL (tcp_recvmsg)
void	tcp_set_state (struct sock *sk, int state)
	EXPORT_SYMBOL_GPL (tcp_set_state)
void	tcp_shutdown (struct sock *sk, int how)
	EXPORT_SYMBOL (tcp_shutdown)
bool	tcp_check_oom (struct sock *sk, int shift)
void	tcp_close (struct sock *sk, long timeout)
	EXPORT_SYMBOL (tcp_close)
int	tcp_disconnect (struct sock *sk, int flags)
	EXPORT_SYMBOL (tcp_disconnect)
void	tcp_sock_destruct (struct sock *sk)
int	tcp_setsockopt (struct sock *sk, int level, int optname, char __user *optval, unsigned int optlen)
	EXPORT_SYMBOL (tcp_setsockopt)
void	tcp_get_info (const struct sock *sk, struct tcp_info *info)
	EXPORT_SYMBOL_GPL (tcp_get_info)
int	tcp_getsockopt (struct sock *sk, int level, int optname, char __user *optval, int __user *optlen)
	EXPORT_SYMBOL (tcp_getsockopt)
struct sk_buff *	tcp_tso_segment (struct sk_buff *skb, netdev_features_t features)
	EXPORT_SYMBOL (tcp_tso_segment)
struct sk_buff **	tcp_gro_receive (struct sk_buff **head, struct sk_buff *skb)
	EXPORT_SYMBOL (tcp_gro_receive)
int	tcp_gro_complete (struct sk_buff *skb)
	EXPORT_SYMBOL (tcp_gro_complete)
int	tcp_cookie_generator (u32 *bakery)
	EXPORT_SYMBOL (tcp_cookie_generator)
void	tcp_done (struct sock *sk)
	EXPORT_SYMBOL_GPL (tcp_done)
	__setup ("thash_entries=", set_thash_entries)
void	tcp_init_mem (struct net *net)
void __init	tcp_init (void)

Variables
int sysctl_tcp_fin_timeout	__read_mostly = TCP_FIN_TIMEOUT
struct percpu_counter	tcp_orphan_count
atomic_long_t	tcp_memory_allocated
struct percpu_counter	tcp_sockets_allocated
struct tcp_congestion_ops	tcp_reno

Macro Definition Documentation

#define pr_fmt

(

fmt

)

"TCP: " fmt

Definition at line 248 of file tcp.c.

#define TCP_SECRET_1MSL   (HZ * TCP_PAWS_MSL)

Definition at line 3420 of file tcp.c.

#define TCP_SECRET_2MSL   (HZ * TCP_PAWS_MSL * 2)

Definition at line 3421 of file tcp.c.

#define TCP_SECRET_LIFE   (HZ * 600)

Definition at line 3422 of file tcp.c.

Function Documentation

__setup

(

)

EXPORT_SYMBOL

(

sysctl_tcp_rmem

)

EXPORT_SYMBOL

(

sysctl_tcp_wmem

)

EXPORT_SYMBOL

(

tcp_memory_allocated

)

EXPORT_SYMBOL

(

tcp_sockets_allocated

)

EXPORT_SYMBOL

(

tcp_memory_pressure

)

EXPORT_SYMBOL

(

tcp_enter_memory_pressure

)

EXPORT_SYMBOL

(

tcp_init_sock

)

EXPORT_SYMBOL

(

tcp_poll

)

EXPORT_SYMBOL

(

tcp_ioctl

)

EXPORT_SYMBOL

(

tcp_splice_read

)

EXPORT_SYMBOL

(

tcp_sendpage

)

EXPORT_SYMBOL

(

tcp_sendmsg

)

EXPORT_SYMBOL

(

tcp_read_sock

)

EXPORT_SYMBOL

(

tcp_recvmsg

)

EXPORT_SYMBOL

(

tcp_shutdown

)

EXPORT_SYMBOL

(

tcp_close

)

EXPORT_SYMBOL

(

tcp_disconnect

)

EXPORT_SYMBOL

(

tcp_setsockopt

)

EXPORT_SYMBOL

(

tcp_getsockopt

)

EXPORT_SYMBOL

(

tcp_tso_segment

)

EXPORT_SYMBOL

(

tcp_gro_receive

)

EXPORT_SYMBOL

(

tcp_gro_complete

)

EXPORT_SYMBOL

(

tcp_cookie_generator

)

EXPORT_SYMBOL_GPL

(

tcp_orphan_count

)

EXPORT_SYMBOL_GPL

(

tcp_set_state

)

EXPORT_SYMBOL_GPL

(

tcp_get_info

)

EXPORT_SYMBOL_GPL

(

tcp_done

)

struct sk_buff* sk_stream_alloc_skb ( struct sock *  sk, int  size, gfp_t  gfp  )

read

Definition at line 760 of file tcp.c.

bool tcp_check_oom	(	struct sock *	sk,
		int	shift
	)

Definition at line 2032 of file tcp.c.

void tcp_cleanup_rbuf	(	struct sock *	sk,
		int	copied
	)

Definition at line 1321 of file tcp.c.

void tcp_close	(	struct sock *	sk,
		long	timeout
	)

Definition at line 2046 of file tcp.c.

int tcp_cookie_generator

(

u32 *

bakery

)

Definition at line 3446 of file tcp.c.

int tcp_disconnect	(	struct sock *	sk,
		int	flags
	)

Definition at line 2227 of file tcp.c.

void tcp_done

(

struct sock *

sk

)

Definition at line 3515 of file tcp.c.

void tcp_enter_memory_pressure

(

struct sock *

sk

)

Definition at line 321 of file tcp.c.

void tcp_free_fastopen_req

(

struct tcp_sock *

tp

)

Definition at line 989 of file tcp.c.

void tcp_get_info	(	const struct sock *	sk,
		struct tcp_info *	info
	)

Definition at line 2736 of file tcp.c.

int tcp_getsockopt	(	struct sock *	sk,
		int	level,
		int	optname,
		char __user *	optval,
		int __user *	optlen
	)

Definition at line 2961 of file tcp.c.

int tcp_gro_complete

(

struct sk_buff *

skb

)

Definition at line 3170 of file tcp.c.

struct sk_buff** tcp_gro_receive ( struct sk_buff **  head, struct sk_buff *  skb  )

read

Definition at line 3074 of file tcp.c.

void __init tcp_init

(

void

)

Definition at line 3563 of file tcp.c.

void tcp_init_mem

(

struct net *

net

)

Definition at line 3554 of file tcp.c.

void tcp_init_sock

(

struct sock *

sk

)

Definition at line 372 of file tcp.c.

int tcp_ioctl	(	struct sock *	sk,
		int	cmd,
		unsigned long	arg
	)

Definition at line 535 of file tcp.c.

unsigned int tcp_poll	(	struct file *	file,
		struct socket *	sock,
		poll_table *	wait
	)

Definition at line 440 of file tcp.c.

int tcp_read_sock	(	struct sock *	sk,
		read_descriptor_t *	desc,
		sk_read_actor_t	recv_actor
	)

Definition at line 1458 of file tcp.c.

int tcp_recvmsg	(	struct kiocb *	iocb,
		struct sock *	sk,
		struct msghdr *	msg,
		size_t	len,
		int	nonblock,
		int	flags,
		int *	addr_len
	)

Definition at line 1532 of file tcp.c.

int tcp_sendmsg	(	struct kiocb *	iocb,
		struct sock *	sk,
		struct msghdr *	msg,
		size_t	size
	)

Definition at line 1021 of file tcp.c.

int tcp_sendpage	(	struct sock *	sk,
		struct page *	page,
		int	offset,
		size_t	size,
		int	flags
	)

Definition at line 949 of file tcp.c.

void tcp_set_state	(	struct sock *	sk,
		int	state
	)

Definition at line 1939 of file tcp.c.

int tcp_setsockopt	(	struct sock *	sk,
		int	level,
		int	optname,
		char __user *	optval,
		unsigned int	optlen
	)

Definition at line 2711 of file tcp.c.

void tcp_shutdown	(	struct sock *	sk,
		int	how
	)

Definition at line 2012 of file tcp.c.

void tcp_sock_destruct

(

struct sock *

sk

)

Definition at line 2294 of file tcp.c.

ssize_t tcp_splice_read	(	struct socket *	sock,
		loff_t *	ppos,
		struct pipe_inode_info *	pipe,
		size_t	len,
		unsigned int	flags
	)

tcp_splice_read - splice data from TCP socket to a pipe : socket to splice from : position (not valid) : pipe to splice to : number of bytes to splice : splice modifier flags

Description: Will read pages from given socket and fill them into a pipe.

Definition at line 676 of file tcp.c.

struct sk_buff* tcp_tso_segment ( struct sk_buff *  skb, netdev_features_t  features  )

read

Definition at line 2985 of file tcp.c.

Variable Documentation

int tcp_memory_pressure __read_mostly = TCP_FIN_TIMEOUT

Definition at line 283 of file tcp.c.

atomic_long_t tcp_memory_allocated

Definition at line 294 of file tcp.c.

struct percpu_counter tcp_orphan_count

Definition at line 285 of file tcp.c.

struct tcp_congestion_ops tcp_reno

Definition at line 407 of file tcp_cong.c.

struct percpu_counter tcp_sockets_allocated

Definition at line 300 of file tcp.c.