linux-stable/net/ax25/ax25_iface.c
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00

224 lines
5.1 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)
*/
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/spinlock.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 <asm/uaccess.h>
#include <asm/system.h>
#include <linux/fcntl.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
static struct ax25_protocol *protocol_list;
static DEFINE_RWLOCK(protocol_list_lock);
static HLIST_HEAD(ax25_linkfail_list);
static DEFINE_SPINLOCK(linkfail_lock);
static struct listen_struct {
struct listen_struct *next;
ax25_address callsign;
struct net_device *dev;
} *listen_list = NULL;
static DEFINE_SPINLOCK(listen_lock);
/*
* Do not register the internal protocols AX25_P_TEXT, AX25_P_SEGMENT,
* AX25_P_IP or AX25_P_ARP ...
*/
void ax25_register_pid(struct ax25_protocol *ap)
{
write_lock_bh(&protocol_list_lock);
ap->next = protocol_list;
protocol_list = ap;
write_unlock_bh(&protocol_list_lock);
}
EXPORT_SYMBOL_GPL(ax25_register_pid);
void ax25_protocol_release(unsigned int pid)
{
struct ax25_protocol *s, *protocol;
write_lock_bh(&protocol_list_lock);
protocol = protocol_list;
if (protocol == NULL) {
write_unlock_bh(&protocol_list_lock);
return;
}
if (protocol->pid == pid) {
protocol_list = protocol->next;
write_unlock_bh(&protocol_list_lock);
kfree(protocol);
return;
}
while (protocol != NULL && protocol->next != NULL) {
if (protocol->next->pid == pid) {
s = protocol->next;
protocol->next = protocol->next->next;
write_unlock_bh(&protocol_list_lock);
kfree(s);
return;
}
protocol = protocol->next;
}
write_unlock_bh(&protocol_list_lock);
}
EXPORT_SYMBOL(ax25_protocol_release);
void ax25_linkfail_register(struct ax25_linkfail *lf)
{
spin_lock_bh(&linkfail_lock);
hlist_add_head(&lf->lf_node, &ax25_linkfail_list);
spin_unlock_bh(&linkfail_lock);
}
EXPORT_SYMBOL(ax25_linkfail_register);
void ax25_linkfail_release(struct ax25_linkfail *lf)
{
spin_lock_bh(&linkfail_lock);
hlist_del_init(&lf->lf_node);
spin_unlock_bh(&linkfail_lock);
}
EXPORT_SYMBOL(ax25_linkfail_release);
int ax25_listen_register(ax25_address *callsign, struct net_device *dev)
{
struct listen_struct *listen;
if (ax25_listen_mine(callsign, dev))
return 0;
if ((listen = kmalloc(sizeof(*listen), GFP_ATOMIC)) == NULL)
return -ENOMEM;
listen->callsign = *callsign;
listen->dev = dev;
spin_lock_bh(&listen_lock);
listen->next = listen_list;
listen_list = listen;
spin_unlock_bh(&listen_lock);
return 0;
}
EXPORT_SYMBOL(ax25_listen_register);
void ax25_listen_release(ax25_address *callsign, struct net_device *dev)
{
struct listen_struct *s, *listen;
spin_lock_bh(&listen_lock);
listen = listen_list;
if (listen == NULL) {
spin_unlock_bh(&listen_lock);
return;
}
if (ax25cmp(&listen->callsign, callsign) == 0 && listen->dev == dev) {
listen_list = listen->next;
spin_unlock_bh(&listen_lock);
kfree(listen);
return;
}
while (listen != NULL && listen->next != NULL) {
if (ax25cmp(&listen->next->callsign, callsign) == 0 && listen->next->dev == dev) {
s = listen->next;
listen->next = listen->next->next;
spin_unlock_bh(&listen_lock);
kfree(s);
return;
}
listen = listen->next;
}
spin_unlock_bh(&listen_lock);
}
EXPORT_SYMBOL(ax25_listen_release);
int (*ax25_protocol_function(unsigned int pid))(struct sk_buff *, ax25_cb *)
{
int (*res)(struct sk_buff *, ax25_cb *) = NULL;
struct ax25_protocol *protocol;
read_lock(&protocol_list_lock);
for (protocol = protocol_list; protocol != NULL; protocol = protocol->next)
if (protocol->pid == pid) {
res = protocol->func;
break;
}
read_unlock(&protocol_list_lock);
return res;
}
int ax25_listen_mine(ax25_address *callsign, struct net_device *dev)
{
struct listen_struct *listen;
spin_lock_bh(&listen_lock);
for (listen = listen_list; listen != NULL; listen = listen->next)
if (ax25cmp(&listen->callsign, callsign) == 0 &&
(listen->dev == dev || listen->dev == NULL)) {
spin_unlock_bh(&listen_lock);
return 1;
}
spin_unlock_bh(&listen_lock);
return 0;
}
void ax25_link_failed(ax25_cb *ax25, int reason)
{
struct ax25_linkfail *lf;
struct hlist_node *node;
spin_lock_bh(&linkfail_lock);
hlist_for_each_entry(lf, node, &ax25_linkfail_list, lf_node)
lf->func(ax25, reason);
spin_unlock_bh(&linkfail_lock);
}
int ax25_protocol_is_registered(unsigned int pid)
{
struct ax25_protocol *protocol;
int res = 0;
read_lock_bh(&protocol_list_lock);
for (protocol = protocol_list; protocol != NULL; protocol = protocol->next)
if (protocol->pid == pid) {
res = 1;
break;
}
read_unlock_bh(&protocol_list_lock);
return res;
}