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/*
* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/if.h>
#include <linux/if_ether.h>
#include <linux/netdevice.h>
#include <net/d80211.h>
#include "ieee80211_i.h"
#include "ieee80211_led.h"
struct ieee80211_dev_list {
struct list_head list;
int dev_index;
struct ieee80211_local *local;
};
static LIST_HEAD(dev_list);
static DEFINE_SPINLOCK(dev_list_lock);
/* Caller must hold dev_list_lock */
static struct ieee80211_dev_list *__ieee80211_dev_find(int index)
{
struct ieee80211_dev_list *dev_item;
list_for_each_entry(dev_item, &dev_list, list) {
if (dev_item->dev_index == index)
return dev_item;
}
return NULL;
}
int ieee80211_dev_alloc_index(struct ieee80211_local *local)
{
struct ieee80211_dev_list *dev_item, *new;
int index = 0;
new = kmalloc(sizeof(struct ieee80211_dev_list), GFP_KERNEL);
if (!new)
return -ENOMEM;
new->local = local;
spin_lock(&dev_list_lock);
list_for_each_entry(dev_item, &dev_list, list) {
if (index < dev_item->dev_index)
break;
index++;
}
new->dev_index = index;
list_add_tail(&new->list, &dev_item->list);
spin_unlock(&dev_list_lock);
local->hw.index = index;
return index;
}
void ieee80211_dev_free_index(struct ieee80211_local *local)
{
struct ieee80211_dev_list *dev_item;
spin_lock(&dev_list_lock);
dev_item = __ieee80211_dev_find(local->hw.index);
if (dev_item)
list_del(&dev_item->list);
spin_unlock(&dev_list_lock);
if (dev_item)
kfree(dev_item);
local->hw.index = -1;
}
struct ieee80211_local *ieee80211_dev_find(int index)
{
struct ieee80211_dev_list *dev_item;
spin_lock(&dev_list_lock);
dev_item = __ieee80211_dev_find(index);
spin_unlock(&dev_list_lock);
return dev_item ? dev_item->local : NULL;
}
int ieee80211_dev_find_index(struct ieee80211_local *local)
{
struct ieee80211_dev_list *dev_item;
int index = -1;
spin_lock(&dev_list_lock);
list_for_each_entry(dev_item, &dev_list, list) {
if (dev_item->local == local) {
index = dev_item->dev_index;
break;
}
}
spin_unlock(&dev_list_lock);
return index;
}
struct ieee80211_local *ieee80211_dev_alloc(gfp_t flags)
{
struct ieee80211_local *local;
local = kzalloc(sizeof(struct ieee80211_local), flags);
if (!local)
return NULL;
local->hw.index = -1;
ieee80211_dev_sysfs_init(local);
return local;
}
void ieee80211_dev_free(struct ieee80211_local *local)
{
ieee80211_dev_sysfs_put(local);
}
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