278 lines
8.7 KiB
C
278 lines
8.7 KiB
C
/*
|
|
* INET An implementation of the TCP/IP protocol suite for the LINUX
|
|
* operating system. INET is implemented using the BSD Socket
|
|
* interface as the means of communication with the user level.
|
|
*
|
|
* Definitions for the AF_INET socket handler.
|
|
*
|
|
* Version: @(#)sock.h 1.0.4 05/13/93
|
|
*
|
|
* Authors: Ross Biro, <bir7@leland.Stanford.Edu>
|
|
* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
|
|
* Corey Minyard <wf-rch!minyard@relay.EU.net>
|
|
* Florian La Roche <flla@stud.uni-sb.de>
|
|
*
|
|
* Fixes:
|
|
* Alan Cox : Volatiles in skbuff pointers. See
|
|
* skbuff comments. May be overdone,
|
|
* better to prove they can be removed
|
|
* than the reverse.
|
|
* Alan Cox : Added a zapped field for tcp to note
|
|
* a socket is reset and must stay shut up
|
|
* Alan Cox : New fields for options
|
|
* Pauline Middelink : identd support
|
|
*
|
|
* 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 _SOCK_H
|
|
#define _SOCK_H
|
|
|
|
#include <linux/timer.h>
|
|
#include <linux/ip.h> /* struct options */
|
|
#include <linux/tcp.h> /* struct tcphdr */
|
|
|
|
#include "skbuff.h" /* struct sk_buff */
|
|
#include "protocol.h" /* struct inet_protocol */
|
|
#ifdef CONFIG_AX25
|
|
#include "ax25.h"
|
|
#endif
|
|
#ifdef CONFIG_IPX
|
|
#include "ipx.h"
|
|
#endif
|
|
|
|
#define SOCK_ARRAY_SIZE 64
|
|
|
|
|
|
/*
|
|
* This structure really needs to be cleaned up.
|
|
* Most of it is for TCP, and not used by any of
|
|
* the other protocols.
|
|
*/
|
|
struct sock {
|
|
struct options *opt;
|
|
volatile unsigned long wmem_alloc;
|
|
volatile unsigned long rmem_alloc;
|
|
unsigned long send_seq;
|
|
unsigned long acked_seq;
|
|
unsigned long copied_seq;
|
|
unsigned long rcv_ack_seq;
|
|
unsigned long window_seq;
|
|
unsigned long fin_seq;
|
|
|
|
/*
|
|
* Not all are volatile, but some are, so we
|
|
* might as well say they all are.
|
|
*/
|
|
volatile char inuse,
|
|
dead,
|
|
urginline,
|
|
intr,
|
|
blog,
|
|
done,
|
|
reuse,
|
|
keepopen,
|
|
linger,
|
|
delay_acks,
|
|
destroy,
|
|
ack_timed,
|
|
no_check,
|
|
zapped, /* In ax25 & ipx means not linked */
|
|
broadcast,
|
|
nonagle;
|
|
unsigned long lingertime;
|
|
int proc;
|
|
struct sock *next;
|
|
struct sock *pair;
|
|
struct sk_buff *volatile send_tail;
|
|
struct sk_buff *volatile send_head;
|
|
struct sk_buff *volatile back_log;
|
|
struct sk_buff *partial;
|
|
struct timer_list partial_timer;
|
|
long retransmits;
|
|
struct sk_buff *volatile wback,
|
|
*volatile wfront,
|
|
*volatile rqueue;
|
|
struct proto *prot;
|
|
struct wait_queue **sleep;
|
|
unsigned long daddr;
|
|
unsigned long saddr;
|
|
unsigned short max_unacked;
|
|
unsigned short window;
|
|
unsigned short bytes_rcv;
|
|
/* mss is min(mtu, max_window) */
|
|
unsigned short mtu; /* mss negotiated in the syn's */
|
|
volatile unsigned short mss; /* current eff. mss - can change */
|
|
volatile unsigned short user_mss; /* mss requested by user in ioctl */
|
|
volatile unsigned short max_window;
|
|
unsigned short num;
|
|
volatile unsigned short cong_window;
|
|
volatile unsigned short cong_count;
|
|
volatile unsigned short ssthresh;
|
|
volatile unsigned short packets_out;
|
|
volatile unsigned short urg;
|
|
volatile unsigned short shutdown;
|
|
volatile unsigned long rtt;
|
|
volatile unsigned long mdev;
|
|
volatile unsigned long rto;
|
|
/* currently backoff isn't used, but I'm maintaining it in case
|
|
* we want to go back to a backoff formula that needs it
|
|
*/
|
|
volatile unsigned short backoff;
|
|
volatile short err;
|
|
unsigned char protocol;
|
|
volatile unsigned char state;
|
|
volatile unsigned char ack_backlog;
|
|
unsigned char max_ack_backlog;
|
|
unsigned char priority;
|
|
unsigned char debug;
|
|
unsigned short rcvbuf;
|
|
unsigned short sndbuf;
|
|
unsigned short type;
|
|
#ifdef CONFIG_IPX
|
|
ipx_address ipx_source_addr,ipx_dest_addr;
|
|
unsigned short ipx_type;
|
|
#endif
|
|
#ifdef CONFIG_AX25
|
|
/* Really we want to add a per protocol private area */
|
|
ax25_address ax25_source_addr,ax25_dest_addr;
|
|
struct sk_buff *volatile ax25_retxq[8];
|
|
char ax25_state,ax25_vs,ax25_vr,ax25_lastrxnr,ax25_lasttxnr;
|
|
char ax25_condition;
|
|
char ax25_retxcnt;
|
|
char ax25_xx;
|
|
char ax25_retxqi;
|
|
char ax25_rrtimer;
|
|
char ax25_timer;
|
|
ax25_digi *ax25_digipeat;
|
|
#endif
|
|
/* IP 'private area' or will be eventually */
|
|
int ip_ttl; /* TTL setting */
|
|
int ip_tos; /* TOS */
|
|
struct tcphdr dummy_th;
|
|
|
|
/* This part is used for the timeout functions (timer.c). */
|
|
int timeout; /* What are we waiting for? */
|
|
struct timer_list timer;
|
|
|
|
/* identd */
|
|
struct socket *socket;
|
|
|
|
/* Callbacks */
|
|
void (*state_change)(struct sock *sk);
|
|
void (*data_ready)(struct sock *sk,int bytes);
|
|
void (*write_space)(struct sock *sk);
|
|
void (*error_report)(struct sock *sk);
|
|
|
|
};
|
|
|
|
struct proto {
|
|
struct sk_buff * (*wmalloc)(struct sock *sk,
|
|
unsigned long size, int force,
|
|
int priority);
|
|
struct sk_buff * (*rmalloc)(struct sock *sk,
|
|
unsigned long size, int force,
|
|
int priority);
|
|
void (*wfree)(struct sock *sk, void *mem,
|
|
unsigned long size);
|
|
void (*rfree)(struct sock *sk, void *mem,
|
|
unsigned long size);
|
|
unsigned long (*rspace)(struct sock *sk);
|
|
unsigned long (*wspace)(struct sock *sk);
|
|
void (*close)(struct sock *sk, int timeout);
|
|
int (*read)(struct sock *sk, unsigned char *to,
|
|
int len, int nonblock, unsigned flags);
|
|
int (*write)(struct sock *sk, unsigned char *to,
|
|
int len, int nonblock, unsigned flags);
|
|
int (*sendto)(struct sock *sk,
|
|
unsigned char *from, int len, int noblock,
|
|
unsigned flags, struct sockaddr_in *usin,
|
|
int addr_len);
|
|
int (*recvfrom)(struct sock *sk,
|
|
unsigned char *from, int len, int noblock,
|
|
unsigned flags, struct sockaddr_in *usin,
|
|
int *addr_len);
|
|
int (*build_header)(struct sk_buff *skb,
|
|
unsigned long saddr,
|
|
unsigned long daddr,
|
|
struct device **dev, int type,
|
|
struct options *opt, int len, int tos, int ttl);
|
|
int (*connect)(struct sock *sk,
|
|
struct sockaddr_in *usin, int addr_len);
|
|
struct sock * (*accept) (struct sock *sk, int flags);
|
|
void (*queue_xmit)(struct sock *sk,
|
|
struct device *dev, struct sk_buff *skb,
|
|
int free);
|
|
void (*retransmit)(struct sock *sk, int all);
|
|
void (*write_wakeup)(struct sock *sk);
|
|
void (*read_wakeup)(struct sock *sk);
|
|
int (*rcv)(struct sk_buff *buff, struct device *dev,
|
|
struct options *opt, unsigned long daddr,
|
|
unsigned short len, unsigned long saddr,
|
|
int redo, struct inet_protocol *protocol);
|
|
int (*select)(struct sock *sk, int which,
|
|
select_table *wait);
|
|
int (*ioctl)(struct sock *sk, int cmd,
|
|
unsigned long arg);
|
|
int (*init)(struct sock *sk);
|
|
void (*shutdown)(struct sock *sk, int how);
|
|
int (*setsockopt)(struct sock *sk, int level, int optname,
|
|
char *optval, int optlen);
|
|
int (*getsockopt)(struct sock *sk, int level, int optname,
|
|
char *optval, int *option);
|
|
unsigned short max_header;
|
|
unsigned long retransmits;
|
|
struct sock * sock_array[SOCK_ARRAY_SIZE];
|
|
char name[80];
|
|
};
|
|
|
|
#define TIME_WRITE 1
|
|
#define TIME_CLOSE 2
|
|
#define TIME_KEEPOPEN 3
|
|
#define TIME_DESTROY 4
|
|
#define TIME_DONE 5 /* used to absorb those last few packets */
|
|
#define TIME_PROBE0 6
|
|
#define SOCK_DESTROY_TIME 1000 /* about 10 seconds */
|
|
|
|
#define PROT_SOCK 1024 /* Sockets 0-1023 can't be bound too unless you are superuser */
|
|
|
|
#define SHUTDOWN_MASK 3
|
|
#define RCV_SHUTDOWN 1
|
|
#define SEND_SHUTDOWN 2
|
|
|
|
|
|
extern void destroy_sock(struct sock *sk);
|
|
extern unsigned short get_new_socknum(struct proto *, unsigned short);
|
|
extern void put_sock(unsigned short, struct sock *);
|
|
extern void release_sock(struct sock *sk);
|
|
extern struct sock *get_sock(struct proto *, unsigned short,
|
|
unsigned long, unsigned short,
|
|
unsigned long);
|
|
extern void print_sk(struct sock *);
|
|
extern struct sk_buff *sock_wmalloc(struct sock *sk,
|
|
unsigned long size, int force,
|
|
int priority);
|
|
extern struct sk_buff *sock_rmalloc(struct sock *sk,
|
|
unsigned long size, int force,
|
|
int priority);
|
|
extern void sock_wfree(struct sock *sk, void *mem,
|
|
unsigned long size);
|
|
extern void sock_rfree(struct sock *sk, void *mem,
|
|
unsigned long size);
|
|
extern unsigned long sock_rspace(struct sock *sk);
|
|
extern unsigned long sock_wspace(struct sock *sk);
|
|
|
|
extern int sock_setsockopt(struct sock *sk,int level,int op,char *optval,int optlen);
|
|
extern int sock_getsockopt(struct sock *sk,int level,int op,char *optval,int *optlen);
|
|
|
|
/* declarations from timer.c */
|
|
extern struct sock *timer_base;
|
|
|
|
void delete_timer (struct sock *);
|
|
void reset_timer (struct sock *, int, unsigned long);
|
|
void net_timer (unsigned long);
|
|
|
|
|
|
#endif /* _SOCK_H */
|