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>
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 9fdf982..6122e8a 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1652,6 +1652,11 @@
* and IV16) for the given key from hardware.
* The callback must be atomic.
*
+ * @set_frag_threshold: Configuration of fragmentation threshold. Assign this
+ * if the device does fragmentation by itself; if this callback is
+ * implemented then the stack will not do fragmentation.
+ * The callback can sleep.
+ *
* @set_rts_threshold: Configuration of RTS threshold (if device needs it)
* The callback can sleep.
*
@@ -1765,6 +1770,7 @@
struct ieee80211_low_level_stats *stats);
void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx,
u32 *iv32, u16 *iv16);
+ int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value);
int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value);
int (*sta_add)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta);