diff options
Diffstat (limited to 'pfinet/linux-inet/sock.h')
| -rw-r--r-- | pfinet/linux-inet/sock.h | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/pfinet/linux-inet/sock.h b/pfinet/linux-inet/sock.h new file mode 100644 index 00000000..4ed353fd --- /dev/null +++ b/pfinet/linux-inet/sock.h @@ -0,0 +1,316 @@ +/* + * 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 <linux/config.h> + +#include <linux/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 +#ifdef CONFIG_ATALK +#include <linux/atalk.h> +#endif + +#include <linux/igmp.h> + +#define SOCK_ARRAY_SIZE 256 /* Think big (also on some systems a byte is faster */ + + +/* + * 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 write_seq; + unsigned long sent_seq; + unsigned long acked_seq; + unsigned long copied_seq; + unsigned long rcv_ack_seq; + unsigned long window_seq; + unsigned long fin_seq; + unsigned long urg_seq; + unsigned long urg_data; + + /* + * 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 *prev; /* Doubly linked chain.. */ + struct sock *pair; + struct sk_buff * volatile send_head; + struct sk_buff * volatile send_tail; + struct sk_buff_head back_log; + struct sk_buff *partial; + struct timer_list partial_timer; + long retransmits; + struct sk_buff_head write_queue, + receive_queue; + 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 long window_clamp; + 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 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; + unsigned char localroute; /* Route locally only */ +#ifdef CONFIG_IPX + ipx_address ipx_dest_addr; + ipx_interface *ipx_intrfc; + unsigned short ipx_port; + 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; + unsigned char ax25_n2; + unsigned short ax25_t1,ax25_t2,ax25_t3; + ax25_digi *ax25_digipeat; +#endif +#ifdef CONFIG_ATALK + struct atalk_sock at; +#endif + +/* IP 'private area' or will be eventually */ + int ip_ttl; /* TTL setting */ + int ip_tos; /* TOS */ + struct tcphdr dummy_th; + struct timer_list keepalive_timer; /* TCP keepalive hack */ + struct timer_list retransmit_timer; /* TCP retransmit timer */ + struct timer_list ack_timer; /* TCP delayed ack timer */ + int ip_xmit_timeout; /* Why the timeout is running */ +#ifdef CONFIG_IP_MULTICAST + int ip_mc_ttl; /* Multicasting TTL */ + int ip_mc_loop; /* Loopback (not implemented yet) */ + char ip_mc_name[MAX_ADDR_LEN]; /* Multicast device name */ + struct ip_mc_socklist *ip_mc_list; /* Group array */ +#endif + + /* This part is used for the timeout functions (timer.c). */ + int timeout; /* What are we waiting for? */ + struct timer_list timer; /* This is the TIME_WAIT/receive timer when we are doing IP */ + struct timeval stamp; + + /* 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, struct sk_buff *skb, + unsigned long size); + void (*rfree)(struct sock *sk, struct sk_buff *skb, + 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]; + int inuse, highestinuse; +}; + +#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 struct sock *get_sock_mcast(struct sock *, unsigned short, + unsigned long, unsigned short, + unsigned long); +extern struct sock *get_sock_raw(struct sock *, unsigned short, + unsigned long, unsigned long); + +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, struct sk_buff *skb, + unsigned long size); +extern void sock_rfree(struct sock *sk, struct sk_buff *skb, + 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); +extern struct sk_buff *sock_alloc_send_skb(struct sock *skb, unsigned long size, int noblock, int *errcode); +extern int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); + +/* 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 */ |