diff options
| author | Yogesh Ashok Powar <yogeshp@marvell.com> | 2011-04-27 18:40:29 +0530 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-04-28 14:53:21 -0400 |
| commit | aac6af5534fade2b18682a0b9efad1a6c04c34c6 (patch) | |
| tree | 786840d7b3dc0ea942e91075ffe6f2cf5ba9d5d9 /net/mac80211/tx.c | |
| parent | e2186b7c25ef9cdb6d631c8dd6a672f41abe22d5 (diff) | |
mac80211: Skip tailroom reservation for full HW-crypto devices
In xmit path, devices that do full hardware crypto (including
TKIP MMIC) need no tailroom. For such devices, tailroom
reservation can be skipped if all the keys are programmed into
the hardware (i.e software crypto is not used for any of the
keys) and none of the keys wants software to generate Michael
MIC.
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/tx.c')
| -rw-r--r-- | net/mac80211/tx.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index a2043e40549..e3e3aa173af 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -1476,12 +1476,7 @@ static int ieee80211_skb_resize(struct ieee80211_local *local, { int tail_need = 0; - /* - * This could be optimised, devices that do full hardware - * crypto (including TKIP MMIC) need no tailroom... But we - * have no drivers for such devices currently. - */ - if (may_encrypt) { + if (may_encrypt && local->crypto_tx_tailroom_needed_cnt) { tail_need = IEEE80211_ENCRYPT_TAILROOM; tail_need -= skb_tailroom(skb); tail_need = max_t(int, tail_need, 0); |