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mac80211: Add debugfs callbacks for station addition/removal 

Provide drivers with hooks to create debugfs files when
a new station is added. This would help drivers to take
advantage of mac80211's station list infrastructure and not maintain
tedious station management code internally.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
[ifdef inline wrapper functions]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Sujith Manoharan 2012-11-20 08:46:02 +05:30 committed by Johannes Berg
parent fe5f255930
commit 77d2ece6fd
3 changed files with 59 additions and 0 deletions
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18
include/net/mac80211.h
View File

@ -2208,6 +2208,14 @@ enum ieee80211_rate_control_changed {
* @sta_remove: Notifies low level driver about removal of an associated
* station, AP, IBSS/WDS/mesh peer etc. This callback can sleep.
*
* @sta_add_debugfs: Drivers can use this callback to add debugfs files
* when a station is added to mac80211's station list. This callback
* and @sta_remove_debugfs should be within a CONFIG_MAC80211_DEBUGFS
* conditional. This callback can sleep.
*
* @sta_remove_debugfs: Remove the debugfs files which were added using
* @sta_add_debugfs. This callback can sleep.
*
* @sta_notify: Notifies low level driver about power state transition of an
* associated station, AP, IBSS/WDS/mesh peer etc. For a VIF operating
* in AP mode, this callback will not be called when the flag
@ -2489,6 +2497,16 @@ struct ieee80211_ops {
struct ieee80211_sta *sta);
int (*sta_remove)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta);
#ifdef CONFIG_MAC80211_DEBUGFS
void (*sta_add_debugfs)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct dentry *dir);
void (*sta_remove_debugfs)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct dentry *dir);
#endif
void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
enum sta_notify_cmd, struct ieee80211_sta *sta);
int (*sta_state)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,

9
net/mac80211/debugfs_sta.c
View File

@ -14,6 +14,7 @@
#include "debugfs.h"
#include "debugfs_sta.h"
#include "sta_info.h"
#include "driver-ops.h"
/* sta attributtes */
@ -334,6 +335,8 @@ STA_OPS(ht_capa);
void ieee80211_sta_debugfs_add(struct sta_info *sta)
{
struct ieee80211_local *local = sta->local;
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
u8 mac[3*ETH_ALEN];
@ -379,10 +382,16 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta)
DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
}
void ieee80211_sta_debugfs_remove(struct sta_info *sta)
{
struct ieee80211_local *local = sta->local;
struct ieee80211_sub_if_data *sdata = sta->sdata;
drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
debugfs_remove_recursive(sta->debugfs.dir);
sta->debugfs.dir = NULL;
}

32
net/mac80211/driver-ops.h
View File

@ -490,6 +490,38 @@ static inline void drv_sta_remove(struct ieee80211_local *local,
trace_drv_return_void(local);
}
#ifdef CONFIG_MAC80211_DEBUGFS
static inline void drv_sta_add_debugfs(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta,
struct dentry *dir)
{
might_sleep();
sdata = get_bss_sdata(sdata);
check_sdata_in_driver(sdata);
if (local->ops->sta_add_debugfs)
local->ops->sta_add_debugfs(&local->hw, &sdata->vif,
sta, dir);
}
static inline void drv_sta_remove_debugfs(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta,
struct dentry *dir)
{
might_sleep();
sdata = get_bss_sdata(sdata);
check_sdata_in_driver(sdata);
if (local->ops->sta_remove_debugfs)
local->ops->sta_remove_debugfs(&local->hw, &sdata->vif,
sta, dir);
}
#endif
static inline __must_check
int drv_sta_state(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,