patch-2.3.15 linux/net/ipv4/timer.c

• Lines: 133
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.14/linux/net/ipv4/timer.c
• Orig date: Wed May 26 18:14:38 1999

diff -u --recursive --new-file v2.3.14/linux/net/ipv4/timer.c linux/net/ipv4/timer.c
@@ -1,132 +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.
- *
- *		TIMER - implementation of software timers for IP.
- *
- * Version:	$Id: timer.c,v 1.16 1999/05/27 00:37:39 davem Exp $
- *
- * Authors:	Ross Biro, <bir7@leland.Stanford.Edu>
- *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
- *		Corey Minyard <wf-rch!minyard@relay.EU.net>
- *		Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de>
- *		Florian La Roche, <flla@stud.uni-sb.de>
- *
- * Fixes:
- *		Alan Cox	:	To avoid destroying a wait queue as we use it
- *					we defer destruction until the destroy timer goes
- *					off.
- *		Alan Cox	:	Destroy socket doesn't write a status value to the
- *					socket buffer _AFTER_ freeing it! Also sock ensures
- *					the socket will get removed BEFORE this is called
- *					otherwise if the timer TIME_DESTROY occurs inside
- *					of inet_bh() with this socket being handled it goes
- *					BOOM! Have to stop timer going off if net_bh is
- *					active or the destroy causes crashes.
- *		Alan Cox	:	Cleaned up unused code.
- *
- *		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.
- */
-
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/socket.h>
-#include <linux/in.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <asm/system.h>
-#include <linux/interrupt.h>
-#include <linux/inet.h>
-#include <linux/netdevice.h>
-#include <net/ip.h>
-#include <net/protocol.h>
-#include <net/tcp.h>
-#include <linux/skbuff.h>
-#include <net/sock.h>
-#include <net/arp.h>
-
-void net_delete_timer (struct sock *t)
-{
-	if(t->timer.prev)
-		del_timer (&t->timer);
-	t->timeout = 0;
-}
-
-void net_reset_timer (struct sock *t, int timeout, unsigned long len)
-{
-	t->timeout = timeout;
-	mod_timer(&t->timer, jiffies+len);
-}
-
-/* Now we will only be called whenever we need to do
- * something, but we must be sure to process all of the
- * sockets that need it.
- */
-void net_timer (unsigned long data)
-{
-	struct sock *sk = (struct sock *) data;
-	int why = sk->timeout;
-
-	/* Only process if socket is not in use. */
-	bh_lock_sock(sk);
-	if (sk->lock.users) {
-		/* Try again later. */ 
-		mod_timer(&sk->timer, jiffies+HZ/20);
-		bh_unlock_sock(sk);
-		return;
-	}
-
-	/* Always see if we need to send an ack. */
-	if (sk->tp_pinfo.af_tcp.delayed_acks && !sk->zapped) {
-		sk->prot->read_wakeup (sk);
-		if (!sk->dead)
-			sk->data_ready(sk,0);
-	}
-
-	/* Now we need to figure out why the socket was on the timer. */
-	switch (why) {
-		case TIME_DONE:
-			/* If the socket hasn't been closed off, re-try a bit later. */
-			if (!sk->dead) {
-				net_reset_timer(sk, TIME_DONE, TCP_DONE_TIME);
-				break;
-			}
-
-			if (sk->state != TCP_CLOSE) {
-				printk (KERN_DEBUG "non CLOSE socket in time_done\n");
-				break;
-			}
-			destroy_sock(sk);
-			return;
-
-		case TIME_DESTROY:
-			/* We've waited for a while for all the memory associated with
-			 * the socket to be freed.
-			 */
-			destroy_sock(sk);
-			return;
-
-		case TIME_CLOSE:
-			/* We've waited long enough, close the socket. */
-			tcp_set_state(sk, TCP_CLOSE);
-			sk->shutdown = SHUTDOWN_MASK;
-			if (!sk->dead)
-				sk->state_change(sk);
-			net_reset_timer (sk, TIME_DONE, TCP_DONE_TIME);
-			break;
-
-		default:
-			/* I want to see these... */
-			printk ("net_timer: timer expired - reason %d is unknown\n", why);
-			break;
-	}
-
-	/* We only need to unlock if the socket was not destroyed. */
-	bh_unlock_sock(sk);
-}
-