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Diffstat (limited to 'i386/i386at/gpl/linux/include/net/tcp.h')
-rw-r--r--i386/i386at/gpl/linux/include/net/tcp.h329
1 files changed, 0 insertions, 329 deletions
diff --git a/i386/i386at/gpl/linux/include/net/tcp.h b/i386/i386at/gpl/linux/include/net/tcp.h
deleted file mode 100644
index 3c7eb7de..00000000
--- a/i386/i386at/gpl/linux/include/net/tcp.h
+++ /dev/null
@@ -1,329 +0,0 @@
-/*
- * 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 TCP module.
- *
- * Version: @(#)tcp.h 1.0.5 05/23/93
- *
- * Authors: Ross Biro, <bir7@leland.Stanford.Edu>
- * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
- *
- * 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 _TCP_H
-#define _TCP_H
-
-#include <linux/tcp.h>
-#include <net/checksum.h>
-
-#define MAX_SYN_SIZE 44 + MAX_HEADER + 15
-#define MAX_FIN_SIZE 40 + MAX_HEADER + 15
-#define MAX_ACK_SIZE 40 + MAX_HEADER + 15
-#define MAX_RESET_SIZE 40 + MAX_HEADER + 15
-#define MAX_WINDOW 32767 /* Never offer a window over 32767 without using
- window scaling (not yet supported). Some poor
- stacks do signed 16bit maths! */
-#define MIN_WINDOW 2048
-#define MAX_ACK_BACKLOG 2
-#define MIN_WRITE_SPACE 2048
-#define TCP_WINDOW_DIFF 2048
-
-/* urg_data states */
-#define URG_VALID 0x0100
-#define URG_NOTYET 0x0200
-#define URG_READ 0x0400
-
-#define TCP_RETR1 7 /*
- * This is how many retries it does before it
- * tries to figure out if the gateway is
- * down.
- */
-
-#define TCP_RETR2 15 /*
- * This should take at least
- * 90 minutes to time out.
- */
-
-#define TCP_TIMEOUT_LEN (15*60*HZ) /* should be about 15 mins */
-#define TCP_TIMEWAIT_LEN (60*HZ) /* how long to wait to successfully
- * close the socket, about 60 seconds */
-#define TCP_FIN_TIMEOUT (3*60*HZ) /* BSD style FIN_WAIT2 deadlock breaker */
-#define TCP_ACK_TIME (3*HZ) /* time to delay before sending an ACK */
-#define TCP_DONE_TIME (5*HZ/2)/* maximum time to wait before actually
- * destroying a socket */
-#define TCP_WRITE_TIME (30*HZ) /* initial time to wait for an ACK,
- * after last transmit */
-#define TCP_TIMEOUT_INIT (3*HZ) /* RFC 1122 initial timeout value */
-#define TCP_SYN_RETRIES 10 /* number of times to retry opening a
- * connection (TCP_RETR2-....) */
-#define TCP_PROBEWAIT_LEN (1*HZ)/* time to wait between probes when
- * I've got something to write and
- * there is no window */
-
-#define TCP_NO_CHECK 0 /* turn to one if you want the default
- * to be no checksum */
-
-
-/*
- * TCP option
- */
-
-#define TCPOPT_NOP 1 /* Padding */
-#define TCPOPT_EOL 0 /* End of options */
-#define TCPOPT_MSS 2 /* Segment size negotiating */
-/*
- * We don't use these yet, but they are for PAWS and big windows
- */
-#define TCPOPT_WINDOW 3 /* Window scaling */
-#define TCPOPT_TIMESTAMP 8 /* Better RTT estimations/PAWS */
-
-
-/*
- * The next routines deal with comparing 32 bit unsigned ints
- * and worry about wraparound (automatic with unsigned arithmetic).
- */
-
-extern __inline int before(__u32 seq1, __u32 seq2)
-{
- return (__s32)(seq1-seq2) < 0;
-}
-
-extern __inline int after(__u32 seq1, __u32 seq2)
-{
- return (__s32)(seq2-seq1) < 0;
-}
-
-
-/* is s2<=s1<=s3 ? */
-extern __inline int between(__u32 seq1, __u32 seq2, __u32 seq3)
-{
- return (after(seq1+1, seq2) && before(seq1, seq3+1));
-}
-
-static __inline__ int min(unsigned int a, unsigned int b)
-{
- if (a < b)
- return(a);
- return(b);
-}
-
-extern struct proto tcp_prot;
-extern struct tcp_mib tcp_statistics;
-extern struct wait_queue *master_select_wakeup;
-
-extern void tcp_err(int type, int code, unsigned char *header, __u32 daddr,
- __u32, struct inet_protocol *protocol);
-extern void tcp_shutdown (struct sock *sk, int how);
-extern int tcp_rcv(struct sk_buff *skb, struct device *dev,
- struct options *opt, __u32 daddr,
- unsigned short len, __u32 saddr, int redo,
- struct inet_protocol *protocol);
-
-extern int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg);
-
-extern void tcp_read_wakeup(struct sock *);
-extern void tcp_write_xmit(struct sock *);
-extern void tcp_time_wait(struct sock *);
-extern void tcp_retransmit(struct sock *, int);
-extern void tcp_do_retransmit(struct sock *, int);
-extern void tcp_send_check(struct tcphdr *th, unsigned long saddr,
- unsigned long daddr, int len, struct sk_buff *skb);
-
-/* tcp_output.c */
-
-extern void tcp_send_probe0(struct sock *);
-extern void tcp_send_partial(struct sock *);
-extern void tcp_write_wakeup(struct sock *);
-extern void tcp_send_fin(struct sock *sk);
-extern void tcp_send_synack(struct sock *, struct sock *, struct sk_buff *);
-extern void tcp_send_skb(struct sock *, struct sk_buff *);
-extern void tcp_send_ack(u32, u32, struct sock *sk, struct tcphdr *th, u32);
-extern void tcp_send_reset(unsigned long saddr, unsigned long daddr, struct tcphdr *th,
- struct proto *prot, struct options *opt, struct device *dev, int tos, int ttl);
-
-extern void tcp_enqueue_partial(struct sk_buff *, struct sock *);
-extern struct sk_buff * tcp_dequeue_partial(struct sock *);
-
-/* tcp_input.c */
-extern void tcp_cache_zap(void);
-
-/* tcp_timer.c */
-#define tcp_reset_msl_timer(x,y,z) reset_timer(x,y,z)
-extern void tcp_reset_xmit_timer(struct sock *, int, unsigned long);
-extern void tcp_retransmit_timer(unsigned long);
-
-/*
- * Default sequence number picking algorithm.
- * As close as possible to RFC 793, which
- * suggests using a 250kHz clock.
- * Further reading shows this assumes 2MB/s networks.
- * For 10MB/s ethernet, a 1MHz clock is appropriate.
- * That's funny, Linux has one built in! Use it!
- */
-
-static inline u32 tcp_init_seq(void)
-{
- struct timeval tv;
- do_gettimeofday(&tv);
- return tv.tv_usec+tv.tv_sec*1000000;
-}
-
-/*
- * This function returns the amount that we can raise the
- * usable window based on the following constraints
- *
- * 1. The window can never be shrunk once it is offered (RFC 793)
- * 2. We limit memory per socket
- */
-
-static __inline__ unsigned short tcp_raise_window(struct sock *sk)
-{
- long free_space = sock_rspace(sk);
- long window;
-
- if (free_space > 1024)
- free_space &= ~0x3FF; /* make free space a multiple of 1024 */
-
- if(sk->window_clamp)
- free_space = min(sk->window_clamp, free_space);
-
- /*
- * compute the actual window i.e.
- * old_window - received_bytes_on_that_win
- */
-
- window = sk->window - (sk->acked_seq - sk->lastwin_seq);
-
- if (sk->mss == 0)
- sk->mss = sk->mtu;
-
- if ( window < 0 ) {
- window = 0;
- printk(KERN_DEBUG "TRW: win < 0 w=%d 1=%u 2=%u\n",
- sk->window, sk->acked_seq, sk->lastwin_seq);
- }
-
- if ( (free_space - window) >= min(sk->mss, MAX_WINDOW/2) )
- return ((free_space - window) / sk->mss) * sk->mss;
-
- return 0;
-}
-
-static __inline__ unsigned short tcp_select_window(struct sock *sk)
-{
- long free_space = sock_rspace(sk);
- long window;
-
- if (free_space > 1024)
- free_space &= ~0x3FF; /* make free space a multiple of 1024 */
-
- if (sk->window_clamp)
- free_space = min(sk->window_clamp, free_space);
-
- /*
- * compute the actual window i.e.
- * old_window - received_bytes_on_that_win
- */
-
- if (sk->mss == 0)
- sk->mss = sk->mtu;
-
- window = sk->window - (sk->acked_seq - sk->lastwin_seq);
-
- if ( window < 0 ) {
- window = 0;
- printk(KERN_DEBUG "TSW: win < 0 w=%d 1=%u 2=%u\n",
- sk->window, sk->acked_seq, sk->lastwin_seq);
- }
-
- /*
- * RFC 1122:
- * "the suggested [SWS] avoidance algoritm for the receiver is to keep
- * RECV.NEXT + RCV.WIN fixed until:
- * RCV.BUFF - RCV.USER - RCV.WINDOW >= min(1/2 RCV.BUFF, MSS)"
- *
- * i.e. don't raise the right edge of the window until you can't raise
- * it MSS bytes
- */
-
- if ( (free_space - window) >= min(sk->mss, MAX_WINDOW/2) )
- window += ((free_space - window) / sk->mss) * sk->mss;
-
- sk->window = window;
- sk->lastwin_seq = sk->acked_seq;
-
- return sk->window;
-}
-
-/*
- * List all states of a TCP socket that can be viewed as a "connected"
- * state. This now includes TCP_SYN_RECV, although I am not yet fully
- * convinced that this is the solution for the 'getpeername(2)'
- * problem. Thanks to Stephen A. Wood <saw@cebaf.gov> -FvK
- */
-
-extern __inline const int tcp_connected(const int state)
-{
- return(state == TCP_ESTABLISHED || state == TCP_CLOSE_WAIT ||
- state == TCP_FIN_WAIT1 || state == TCP_FIN_WAIT2 ||
- state == TCP_SYN_RECV);
-}
-
-/*
- * Calculate(/check) TCP checksum
- */
-static __inline__ u16 tcp_check(struct tcphdr *th, int len,
- unsigned long saddr, unsigned long daddr, unsigned long base)
-{
- return csum_tcpudp_magic(saddr,daddr,len,IPPROTO_TCP,base);
-}
-
-#undef STATE_TRACE
-
-#ifdef STATE_TRACE
-static char *statename[]={
- "Unused","Established","Syn Sent","Syn Recv",
- "Fin Wait 1","Fin Wait 2","Time Wait", "Close",
- "Close Wait","Last ACK","Listen","Closing"
-};
-#endif
-
-static __inline__ void tcp_set_state(struct sock *sk, int state)
-{
- int oldstate = sk->state;
-
- sk->state = state;
-
-#ifdef STATE_TRACE
- if(sk->debug)
- printk("TCP sk=%p, State %s -> %s\n",sk, statename[oldstate],statename[state]);
-#endif
-
- switch (state) {
- case TCP_ESTABLISHED:
- if (oldstate != TCP_ESTABLISHED) {
- tcp_statistics.TcpCurrEstab++;
- /* This is a hack but it doesn't occur often and it's going to
- be a real to fix nicely */
- if (oldstate == TCP_SYN_RECV)
- wake_up_interruptible(&master_select_wakeup);
- }
- break;
-
- case TCP_CLOSE:
- tcp_cache_zap();
- /* Should be about 2 rtt's */
- reset_timer(sk, TIME_DONE, min(sk->rtt * 2, TCP_DONE_TIME));
- /* fall through */
- default:
- if (oldstate==TCP_ESTABLISHED)
- tcp_statistics.TcpCurrEstab--;
- }
-}
-
-#endif /* _TCP_H */
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