mac80211: support hardware TX fragmentation offload

The lower driver is notified when the fragmentation threshold changes
and upon a reconfig of the interface.

If the driver supports hardware TX fragmentation, don't fragment
packets in the stack.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 0b6fc92bc0d7..e486286ebf1a 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1152,6 +1152,9 @@ int ieee80211_reconfig(struct ieee80211_local *local)
         }
         mutex_unlock(&local->sta_mtx);
 
+        /* setup fragmentation threshold */
+        drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
+
         /* setup RTS threshold */
         drv_set_rts_threshold(local, hw->wiphy->rts_threshold);