[MAC80211]: add interface index to key debugfs

Add a new file 'ifindex' to each key's debugfs dir to
allow finding which interface the key was configured on.
This isn't done as a symlink because of possible netdev
name changes.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/mac80211/ieee80211_key.h b/net/mac80211/ieee80211_key.h
index a4e5fbbe045c..ae49418f18b4 100644
--- a/net/mac80211/ieee80211_key.h
+++ b/net/mac80211/ieee80211_key.h
@@ -101,6 +101,7 @@ struct ieee80211_key {
                 struct dentry *rx_spec;
                 struct dentry *replays;
                 struct dentry *key;
+                struct dentry *ifindex;
         } debugfs;
 #endif