diff options
Diffstat (limited to 'package/d80211/src/ieee80211_dev.c')
-rw-r--r-- | package/d80211/src/ieee80211_dev.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/package/d80211/src/ieee80211_dev.c b/package/d80211/src/ieee80211_dev.c new file mode 100644 index 000000000..589a7bd01 --- /dev/null +++ b/package/d80211/src/ieee80211_dev.c @@ -0,0 +1,117 @@ +/* + * 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); +} |