mirror of
https://github.com/torvalds/linux.git
synced 2024-11-06 03:51:48 +00:00
87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
|
/*
|
||
|
|
* NET Generic infrastructure for INET connection oriented protocols.
|
||
|
|
*
|
||
|
|
* Definitions for inet_connection_sock
|
||
|
|
*
|
||
|
|
* Authors: Many people, see the TCP sources
|
||
|
|
*
|
||
|
|
* From code originally in TCP
|
||
|
|
*
|
||
|
|
* 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 _INET_CONNECTION_SOCK_H
|
||
|
|
#define _INET_CONNECTION_SOCK_H
|
||
|
|
|
||
|
|
#include <linux/ip.h>
|
||
|
|
#include <linux/timer.h>
|
||
|
|
#include <net/request_sock.h>
|
||
|
|
|
||
|
|
struct inet_bind_bucket;
|
||
|
|
struct inet_hashinfo;
|
||
|
|
|
||
|
|
/** inet_connection_sock - INET connection oriented sock
|
||
|
|
*
|
||
|
|
* @icsk_accept_queue: FIFO of established children
|
||
|
|
* @icsk_bind_hash: Bind node
|
||
|
|
* @icsk_timeout: Timeout
|
||
|
|
* @icsk_retransmit_timer: Resend (no ack)
|
||
|
|
* @icsk_rto: Retransmit timeout
|
||
|
|
* @icsk_retransmits: Number of unrecovered [RTO] timeouts
|
||
|
|
* @icsk_pending: Scheduled timer event
|
||
|
|
* @icsk_backoff: Backoff
|
||
|
|
* @icsk_syn_retries: Number of allowed SYN (or equivalent) retries
|
||
|
|
* @icsk_ack: Delayed ACK control data
|
||
|
|
*/
|
||
|
|
struct inet_connection_sock {
|
||
|
|
/* inet_sock has to be the first member! */
|
||
|
|
struct inet_sock icsk_inet;
|
||
|
|
struct request_sock_queue icsk_accept_queue;
|
||
|
|
struct inet_bind_bucket *icsk_bind_hash;
|
||
|
|
unsigned long icsk_timeout;
|
||
|
|
struct timer_list icsk_retransmit_timer;
|
||
|
|
struct timer_list icsk_delack_timer;
|
||
|
|
__u32 icsk_rto;
|
||
|
|
__u8 icsk_retransmits;
|
||
|
|
__u8 icsk_pending;
|
||
|
|
__u8 icsk_backoff;
|
||
|
|
__u8 icsk_syn_retries;
|
||
|
|
struct {
|
||
|
|
__u8 pending; /* ACK is pending */
|
||
|
|
__u8 quick; /* Scheduled number of quick acks */
|
||
|
|
__u8 pingpong; /* The session is interactive */
|
||
|
|
__u8 blocked; /* Delayed ACK was blocked by socket lock */
|
||
|
|
__u32 ato; /* Predicted tick of soft clock */
|
||
|
|
unsigned long timeout; /* Currently scheduled timeout */
|
||
|
|
__u32 lrcvtime; /* timestamp of last received data packet */
|
||
|
|
__u16 last_seg_size; /* Size of last incoming segment */
|
||
|
|
__u16 rcv_mss; /* MSS used for delayed ACK decisions */
|
||
|
|
} icsk_ack;
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline struct inet_connection_sock *inet_csk(const struct sock *sk)
|
||
|
|
{
|
||
|
|
return (struct inet_connection_sock *)sk;
|
||
|
|
}
|
||
|
|
|
||
|
|
extern void inet_csk_init_xmit_timers(struct sock *sk,
|
||
|
|
void (*retransmit_handler)(unsigned long),
|
||
|
|
void (*delack_handler)(unsigned long),
|
||
|
|
void (*keepalive_handler)(unsigned long));
|
||
|
|
extern void inet_csk_clear_xmit_timers(struct sock *sk);
|
||
|
|
|
||
|
|
extern struct request_sock *inet_csk_search_req(const struct sock *sk,
|
||
|
|
struct request_sock ***prevp,
|
||
|
|
const __u16 rport,
|
||
|
|
const __u32 raddr,
|
||
|
|
const __u32 laddr);
|
||
|
|
extern int inet_csk_get_port(struct inet_hashinfo *hashinfo,
|
||
|
|
struct sock *sk, unsigned short snum);
|
||
|
|
|
||
|
|
extern struct dst_entry* inet_csk_route_req(struct sock *sk,
|
||
|
|
const struct request_sock *req);
|
||
|
|
|
||
|
|
#endif /* _INET_CONNECTION_SOCK_H */
|