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mac80211: support hardware TX fragmentation offload

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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>
This commit is contained in:
Arik Nemtsov 2010-11-08 11:51:06 +02:00 • committed by John W. Linville
commit f23a478075
6 changed files with 60 additions and 2 deletions
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6
include/net/mac80211.h
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@ -1652,6 +1652,11 @@ enum ieee80211_ampdu_mlme_action {
* 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_ops {
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);