mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 00:06:51 +07:00
a3d7a9d775
Missing unlock, as noted by Ted Unangst <tedu@coverity.com>. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
218 lines
4.9 KiB
C
218 lines
4.9 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
|
|
* Copyright (C) 2002 Ralf Baechle DO1GRB (ralf@gnu.org)
|
|
*/
|
|
#include <linux/errno.h>
|
|
#include <linux/types.h>
|
|
#include <linux/socket.h>
|
|
#include <linux/in.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/string.h>
|
|
#include <linux/sockios.h>
|
|
#include <linux/net.h>
|
|
#include <net/ax25.h>
|
|
#include <linux/inet.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/skbuff.h>
|
|
#include <net/sock.h>
|
|
#include <net/tcp_states.h>
|
|
#include <asm/system.h>
|
|
#include <linux/fcntl.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/interrupt.h>
|
|
#include <net/rose.h>
|
|
|
|
static void rose_heartbeat_expiry(unsigned long);
|
|
static void rose_timer_expiry(unsigned long);
|
|
static void rose_idletimer_expiry(unsigned long);
|
|
|
|
void rose_start_heartbeat(struct sock *sk)
|
|
{
|
|
del_timer(&sk->sk_timer);
|
|
|
|
sk->sk_timer.data = (unsigned long)sk;
|
|
sk->sk_timer.function = &rose_heartbeat_expiry;
|
|
sk->sk_timer.expires = jiffies + 5 * HZ;
|
|
|
|
add_timer(&sk->sk_timer);
|
|
}
|
|
|
|
void rose_start_t1timer(struct sock *sk)
|
|
{
|
|
struct rose_sock *rose = rose_sk(sk);
|
|
|
|
del_timer(&rose->timer);
|
|
|
|
rose->timer.data = (unsigned long)sk;
|
|
rose->timer.function = &rose_timer_expiry;
|
|
rose->timer.expires = jiffies + rose->t1;
|
|
|
|
add_timer(&rose->timer);
|
|
}
|
|
|
|
void rose_start_t2timer(struct sock *sk)
|
|
{
|
|
struct rose_sock *rose = rose_sk(sk);
|
|
|
|
del_timer(&rose->timer);
|
|
|
|
rose->timer.data = (unsigned long)sk;
|
|
rose->timer.function = &rose_timer_expiry;
|
|
rose->timer.expires = jiffies + rose->t2;
|
|
|
|
add_timer(&rose->timer);
|
|
}
|
|
|
|
void rose_start_t3timer(struct sock *sk)
|
|
{
|
|
struct rose_sock *rose = rose_sk(sk);
|
|
|
|
del_timer(&rose->timer);
|
|
|
|
rose->timer.data = (unsigned long)sk;
|
|
rose->timer.function = &rose_timer_expiry;
|
|
rose->timer.expires = jiffies + rose->t3;
|
|
|
|
add_timer(&rose->timer);
|
|
}
|
|
|
|
void rose_start_hbtimer(struct sock *sk)
|
|
{
|
|
struct rose_sock *rose = rose_sk(sk);
|
|
|
|
del_timer(&rose->timer);
|
|
|
|
rose->timer.data = (unsigned long)sk;
|
|
rose->timer.function = &rose_timer_expiry;
|
|
rose->timer.expires = jiffies + rose->hb;
|
|
|
|
add_timer(&rose->timer);
|
|
}
|
|
|
|
void rose_start_idletimer(struct sock *sk)
|
|
{
|
|
struct rose_sock *rose = rose_sk(sk);
|
|
|
|
del_timer(&rose->idletimer);
|
|
|
|
if (rose->idle > 0) {
|
|
rose->idletimer.data = (unsigned long)sk;
|
|
rose->idletimer.function = &rose_idletimer_expiry;
|
|
rose->idletimer.expires = jiffies + rose->idle;
|
|
|
|
add_timer(&rose->idletimer);
|
|
}
|
|
}
|
|
|
|
void rose_stop_heartbeat(struct sock *sk)
|
|
{
|
|
del_timer(&sk->sk_timer);
|
|
}
|
|
|
|
void rose_stop_timer(struct sock *sk)
|
|
{
|
|
del_timer(&rose_sk(sk)->timer);
|
|
}
|
|
|
|
void rose_stop_idletimer(struct sock *sk)
|
|
{
|
|
del_timer(&rose_sk(sk)->idletimer);
|
|
}
|
|
|
|
static void rose_heartbeat_expiry(unsigned long param)
|
|
{
|
|
struct sock *sk = (struct sock *)param;
|
|
struct rose_sock *rose = rose_sk(sk);
|
|
|
|
bh_lock_sock(sk);
|
|
switch (rose->state) {
|
|
case ROSE_STATE_0:
|
|
/* Magic here: If we listen() and a new link dies before it
|
|
is accepted() it isn't 'dead' so doesn't get removed. */
|
|
if (sock_flag(sk, SOCK_DESTROY) ||
|
|
(sk->sk_state == TCP_LISTEN && sock_flag(sk, SOCK_DEAD))) {
|
|
bh_unlock_sock(sk);
|
|
rose_destroy_socket(sk);
|
|
return;
|
|
}
|
|
break;
|
|
|
|
case ROSE_STATE_3:
|
|
/*
|
|
* Check for the state of the receive buffer.
|
|
*/
|
|
if (atomic_read(&sk->sk_rmem_alloc) < (sk->sk_rcvbuf / 2) &&
|
|
(rose->condition & ROSE_COND_OWN_RX_BUSY)) {
|
|
rose->condition &= ~ROSE_COND_OWN_RX_BUSY;
|
|
rose->condition &= ~ROSE_COND_ACK_PENDING;
|
|
rose->vl = rose->vr;
|
|
rose_write_internal(sk, ROSE_RR);
|
|
rose_stop_timer(sk); /* HB */
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
rose_start_heartbeat(sk);
|
|
bh_unlock_sock(sk);
|
|
}
|
|
|
|
static void rose_timer_expiry(unsigned long param)
|
|
{
|
|
struct sock *sk = (struct sock *)param;
|
|
struct rose_sock *rose = rose_sk(sk);
|
|
|
|
bh_lock_sock(sk);
|
|
switch (rose->state) {
|
|
case ROSE_STATE_1: /* T1 */
|
|
case ROSE_STATE_4: /* T2 */
|
|
rose_write_internal(sk, ROSE_CLEAR_REQUEST);
|
|
rose->state = ROSE_STATE_2;
|
|
rose_start_t3timer(sk);
|
|
break;
|
|
|
|
case ROSE_STATE_2: /* T3 */
|
|
rose->neighbour->use--;
|
|
rose_disconnect(sk, ETIMEDOUT, -1, -1);
|
|
break;
|
|
|
|
case ROSE_STATE_3: /* HB */
|
|
if (rose->condition & ROSE_COND_ACK_PENDING) {
|
|
rose->condition &= ~ROSE_COND_ACK_PENDING;
|
|
rose_enquiry_response(sk);
|
|
}
|
|
break;
|
|
}
|
|
bh_unlock_sock(sk);
|
|
}
|
|
|
|
static void rose_idletimer_expiry(unsigned long param)
|
|
{
|
|
struct sock *sk = (struct sock *)param;
|
|
|
|
bh_lock_sock(sk);
|
|
rose_clear_queues(sk);
|
|
|
|
rose_write_internal(sk, ROSE_CLEAR_REQUEST);
|
|
rose_sk(sk)->state = ROSE_STATE_2;
|
|
|
|
rose_start_t3timer(sk);
|
|
|
|
sk->sk_state = TCP_CLOSE;
|
|
sk->sk_err = 0;
|
|
sk->sk_shutdown |= SEND_SHUTDOWN;
|
|
|
|
if (!sock_flag(sk, SOCK_DEAD)) {
|
|
sk->sk_state_change(sk);
|
|
sock_set_flag(sk, SOCK_DEAD);
|
|
}
|
|
bh_unlock_sock(sk);
|
|
}
|