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cfg80211: free_priv for BSS info

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When cfg80211 users have their own allocated data in the per-BSS
private data, they will need to free this when the BSS struct is
destroyed. Add a free_priv method and fix one place where the BSS
was kfree'd rather than released properly.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-02-10 21:25:57 +01:00 committed by John W. Linville
parent 99cf5f5f35
commit 78c1c7e109
3 changed files with 5 additions and 1 deletions
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2
include/net/cfg80211.h
View File

@ -567,6 +567,7 @@ enum cfg80211_signal_type {
* @len_information_elements: total length of the information elements
* @signal: signal strength value
* @signal_type: signal type
* @free_priv: function pointer to free private data
* @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
*/
struct cfg80211_bss {
@ -582,6 +583,7 @@ struct cfg80211_bss {
s32 signal;
enum cfg80211_signal_type signal_type;
void (*free_priv)(struct cfg80211_bss *bss);
u8 priv[0] __attribute__((__aligned__(sizeof(void *))));
};

2
net/wireless/core.c
View File

@ -376,7 +376,7 @@ void cfg80211_dev_free(struct cfg80211_registered_device *drv)
mutex_destroy(&drv->mtx);
mutex_destroy(&drv->devlist_mtx);
list_for_each_entry_safe(scan, tmp, &drv->bss_list, list)
kfree(scan);
cfg80211_put_bss(&scan->pub);
kfree(drv);
}

2
net/wireless/scan.c
View File

@ -56,6 +56,8 @@ static void bss_release(struct kref *ref)
struct cfg80211_internal_bss *bss;
bss = container_of(ref, struct cfg80211_internal_bss, ref);
if (bss->pub.free_priv)
bss->pub.free_priv(&bss->pub);
kfree(bss);
}