mac80211: don't wait for TX status forever

TX status notification can get lost, or the frames could
get stuck on the queue, so don't wait for the callback
from the driver forever and instead time out after half
a second.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index e3e7d2be9e4110040cdf1b4832bd16ac1b914cdc..e5c3cf405060a11b186c9ff8eb0a6741d4f4bcf9 100644 (file)
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -31,10 +31,12 @@
 #include "led.h"
 
 #define IEEE80211_AUTH_TIMEOUT         (HZ / 5)
+#define IEEE80211_AUTH_TIMEOUT_LONG    (HZ / 2)
 #define IEEE80211_AUTH_TIMEOUT_SHORT   (HZ / 10)
 #define IEEE80211_AUTH_MAX_TRIES       3
 #define IEEE80211_AUTH_WAIT_ASSOC      (HZ * 5)
 #define IEEE80211_ASSOC_TIMEOUT                (HZ / 5)
+#define IEEE80211_ASSOC_TIMEOUT_LONG   (HZ / 2)
 #define IEEE80211_ASSOC_TIMEOUT_SHORT  (HZ / 10)
 #define IEEE80211_ASSOC_MAX_TRIES      3
 
@@ -3394,10 +3396,13 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
 
        if (tx_flags == 0) {
                auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
-               ifmgd->auth_data->timeout_started = true;
+               auth_data->timeout_started = true;
                run_again(sdata, auth_data->timeout);
        } else {
-               auth_data->timeout_started = false;
+               auth_data->timeout =
+                       round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
+               auth_data->timeout_started = true;
+               run_again(sdata, auth_data->timeout);
        }
 
        return 0;
@@ -3434,7 +3439,11 @@ static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
                assoc_data->timeout_started = true;
                run_again(sdata, assoc_data->timeout);
        } else {
-               assoc_data->timeout_started = false;
+               assoc_data->timeout =
+                       round_jiffies_up(jiffies +
+                                        IEEE80211_ASSOC_TIMEOUT_LONG);
+               assoc_data->timeout_started = true;
+               run_again(sdata, assoc_data->timeout);
        }
 
        return 0;