diff options
Diffstat (limited to 'net/mac80211/wep.c')
| -rw-r--r-- | net/mac80211/wep.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c index 7aa31bbfaa3b..c04d401dae92 100644 --- a/net/mac80211/wep.c +++ b/net/mac80211/wep.c @@ -92,6 +92,7 @@ static u8 *ieee80211_wep_add_iv(struct ieee80211_local *local, int keylen, int keyidx) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); unsigned int hdrlen; u8 *newhdr; @@ -104,6 +105,13 @@ static u8 *ieee80211_wep_add_iv(struct ieee80211_local *local, hdrlen = ieee80211_hdrlen(hdr->frame_control); newhdr = skb_push(skb, WEP_IV_LEN); memmove(newhdr, newhdr + WEP_IV_LEN, 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 newhdr + hdrlen; + + skb_set_network_header(skb, skb_network_offset(skb) + WEP_IV_LEN); ieee80211_wep_get_iv(local, keylen, keyidx, newhdr + hdrlen); return newhdr + hdrlen; } @@ -313,14 +321,15 @@ ieee80211_crypto_wep_decrypt(struct ieee80211_rx_data *rx) static int wep_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb) { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_key_conf *hw_key = info->control.hw_key; - if (!info->control.hw_key) { + if (!hw_key) { if (ieee80211_wep_encrypt(tx->local, skb, tx->key->conf.key, tx->key->conf.keylen, tx->key->conf.keyidx)) return -1; - } else if (info->control.hw_key->flags & - IEEE80211_KEY_FLAG_GENERATE_IV) { + } else if ((hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV) || + (hw_key->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE)) { if (!ieee80211_wep_add_iv(tx->local, skb, tx->key->conf.keylen, tx->key->conf.keyidx)) |