| /* |
| * 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 */ |
| |
| #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, |
| exp_growth, |
| zapped, /* In ipx means not linked */ |
| broadcast; |
| 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 *send_tmp; |
| 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; |
| unsigned short mtu; |
| unsigned short num; |
| volatile unsigned short cong_window; |
| volatile unsigned short packets_out; |
| volatile unsigned short urg; |
| volatile unsigned short shutdown; |
| unsigned short mss; |
| volatile unsigned long rtt; |
| volatile unsigned long mdev; |
| 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; /* IPX type field */ |
| 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; |
| }; |
| |
| struct proto { |
| void *(*wmalloc)(struct sock *sk, |
| unsigned long size, int force, |
| int priority); |
| void *(*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 (*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); |
| 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 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 void *sock_wmalloc(struct sock *sk, |
| unsigned long size, int force, |
| int priority); |
| extern void *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); |
| |
| |
| /* 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 */ |
