[mac80211] mac80211: Support multiple VIFS per AP in debugfs.

[greearb@gmail.com]

From: Ben Greear <greearb@candelatech.com>

Create 'stations' sub-directory under each netdev:[vif-name]
directory to hold all stations for that network device.

Signed-off-by: Ben Greear <greearb@candelatech.com>
---
:100644 100644 e81ef4e... ebd5b69... M	net/mac80211/debugfs.c
:100644 100644 20b2998... 3e12430... M	net/mac80211/debugfs_netdev.c
:100644 100644 76839d4... 6b7ff9f... M	net/mac80211/debugfs_sta.c
:100644 100644 9346a6b... 3c7c230... M	net/mac80211/ieee80211_i.h
 net/mac80211/debugfs.c        |    1 -
 net/mac80211/debugfs_netdev.c |    3 +++
 net/mac80211/debugfs_sta.c    |    2 +-
 net/mac80211/ieee80211_i.h    |    2 +-
 4 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index e81ef4e..ebd5b69 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -368,7 +368,6 @@ void debugfs_hw_add(struct ieee80211_local *local)
 	if (!phyd)
 		return;
 
-	local->debugfs.stations = debugfs_create_dir("stations", phyd);
 	local->debugfs.keys = debugfs_create_dir("keys", phyd);
 
 	DEBUGFS_ADD(frequency);
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index 20b2998..3e12430 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -409,6 +409,9 @@ void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
 	sprintf(buf, "netdev:%s", sdata->name);
 	sdata->debugfs.dir = debugfs_create_dir(buf,
 		sdata->local->hw.wiphy->debugfsdir);
+	if (sdata->debugfs.dir)
+		sdata->debugfs.subdir_stations = debugfs_create_dir("stations",
+			sdata->debugfs.dir);
 	add_files(sdata);
 }
 
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 76839d4..6b7ff9f 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -300,7 +300,7 @@ STA_OPS(ht_capa);
 
 void ieee80211_sta_debugfs_add(struct sta_info *sta)
 {
-	struct dentry *stations_dir = sta->local->debugfs.stations;
+	struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
 	u8 mac[3*ETH_ALEN];
 
 	sta->debugfs.add_has_run = true;
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 9346a6b..3c7c230 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -564,6 +564,7 @@ struct ieee80211_sub_if_data {
 #ifdef CONFIG_MAC80211_DEBUGFS
 	struct {
 		struct dentry *dir;
+		struct dentry *subdir_stations;
 		struct dentry *default_key;
 		struct dentry *default_mgmt_key;
 	} debugfs;
@@ -899,7 +900,6 @@ struct ieee80211_local {
 #ifdef CONFIG_MAC80211_DEBUGFS
 	struct local_debugfsdentries {
 		struct dentry *rcdir;
-		struct dentry *stations;
 		struct dentry *keys;
 	} debugfs;
 #endif
-- 
1.7.2.3