diff options
| author | Janusz.Dziedzic@tieto.com <Janusz.Dziedzic@tieto.com> | 2012-05-09 08:11:20 +0300 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-05-16 12:46:37 -0400 |
| commit | ee70108fa2a7688dc67bfedaeb0c8c46a221effb (patch) | |
| tree | 69c9a607c144a79c72632c836eae3e2f5a884fd6 /net/mac80211/wpa.c | |
| parent | 40bbc21a2c2bc432735a085d572f3cb3732cf64c (diff) | |
| download | lwn-ee70108fa2a7688dc67bfedaeb0c8c46a221effb.tar.gz lwn-ee70108fa2a7688dc67bfedaeb0c8c46a221effb.zip | |
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.c | 8 |
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++; |