diff options
| author | Christian Lamparter <chunkeey@web.de> | 2008-12-20 02:21:37 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-01-12 14:24:52 -0500 |
| commit | c1d34c1dad76be6d515ef33e24eb92f10547b08b (patch) | |
| tree | 65412ed008bf4558a87c87d3c9b0e6a7224ef127 | |
| parent | 706ea9b66935e341b063d860c9c8f279b37b5578 (diff) | |
p54: crypto offload fixes
This patch fixes two small flaws:
- restore the original TKIP IV if we altered it.
- reserve & initialize ICV with zeros.
This is actually only necessary for some obsolete p54usb firmwares.
But we don't know yet, if all devices are compatible with the new revisions.
Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/p54/p54common.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/net/wireless/p54/p54common.c b/drivers/net/wireless/p54/p54common.c index 06c64744df2..37294a657f8 100644 --- a/drivers/net/wireless/p54/p54common.c +++ b/drivers/net/wireless/p54/p54common.c @@ -809,6 +809,16 @@ static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb) info->flags |= IEEE80211_TX_STAT_TX_FILTERED; info->status.ack_signal = p54_rssi_to_dbm(dev, (int)payload->ack_rssi); + + if (entry_data->key_type == P54_CRYPTO_TKIPMICHAEL) { + u8 *iv = (u8 *)(entry_data->align + pad + + entry_data->crypt_offset); + + /* Restore the original TKIP IV. */ + iv[2] = iv[0]; + iv[0] = iv[1]; + iv[1] = (iv[0] | 0x20) & 0x7f; /* WEPSeed - 8.3.2.2 */ + } skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data)); ieee80211_tx_status_irqsafe(dev, entry); goto out; @@ -1394,7 +1404,6 @@ static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb) hdr->tries = ridx; txhdr->rts_rate_idx = 0; if (info->control.hw_key) { - crypt_offset += info->control.hw_key->iv_len; txhdr->key_type = p54_convert_algo(info->control.hw_key->alg); txhdr->key_len = min((u8)16, info->control.hw_key->keylen); memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len); @@ -1408,6 +1417,8 @@ static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb) } /* reserve some space for ICV */ len += info->control.hw_key->icv_len; + memset(skb_put(skb, info->control.hw_key->icv_len), 0, + info->control.hw_key->icv_len); } else { txhdr->key_type = 0; txhdr->key_len = 0; |