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authorJanusz.Dziedzic@tieto.com <Janusz.Dziedzic@tieto.com>2012-05-09 08:11:20 +0300
committerJohn W. Linville <linville@tuxdriver.com>2012-05-16 12:46:37 -0400
commitee70108fa2a7688dc67bfedaeb0c8c46a221effb (patch)
tree69c9a607c144a79c72632c836eae3e2f5a884fd6 /net/mac80211/wpa.c
parent40bbc21a2c2bc432735a085d572f3cb3732cf64c (diff)
downloadlinux-ee70108fa2a7688dc67bfedaeb0c8c46a221effb.tar.bz2
mac80211: Add IV-room in the skb for TKIP and WEP
Add IV-room in skb also for TKIP and WEP. Extend patch: "mac80211: support adding IV-room in the skb for CCMP keys" Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/wpa.c')
-rw-r--r--net/mac80211/wpa.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 0ae23c60968c..4d05ad9403ae 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -183,7 +183,8 @@ static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
u8 *pos;
if (info->control.hw_key &&
- !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
+ !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV) &&
+ !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE)) {
/* hwaccel - with no need for software-generated IV */
return 0;
}
@@ -204,6 +205,11 @@ static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
memmove(pos, pos + TKIP_IV_LEN, hdrlen);
pos += hdrlen;
+ /* the HW only needs room for the IV, but not the actual IV */
+ if (info->control.hw_key &&
+ (info->control.hw_key->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE))
+ return 0;
+
/* Increase IV for the frame */
spin_lock_irqsave(&key->u.tkip.txlock, flags);
key->u.tkip.tx.iv16++;