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Mixed PTK/GTK CCMP/TKIP support.

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Signed-off-by: Hong Liu <hong.liu@intel.com>
This commit is contained in:
Hong Liu 2005-08-31 18:07:22 +08:00 committed by James Ketrenos
parent 90700fd982
commit 567deaf6d4
1 changed files with 37 additions and 13 deletions
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50
drivers/net/wireless/ipw2200.c
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@ -5771,7 +5771,8 @@ static void ipw_set_hwcrypto_keys(struct ipw_priv *priv)
DCT_FLAG_EXT_SECURITY_CCM,
priv->ieee->sec.active_key);
ipw_send_wep_keys(priv, DCW_WEP_KEY_SEC_TYPE_CCM);
if (!priv->ieee->host_mc_decrypt)
ipw_send_wep_keys(priv, DCW_WEP_KEY_SEC_TYPE_CCM);
break;
case SEC_LEVEL_2:
if (priv->ieee->sec.flags & SEC_ACTIVE_KEY)
@ -5786,9 +5787,6 @@ static void ipw_set_hwcrypto_keys(struct ipw_priv *priv)
default:
break;
}
ipw_set_hw_decrypt_unicast(priv, priv->ieee->sec.level);
ipw_set_hw_decrypt_multicast(priv, priv->ieee->sec.level);
}
static void ipw_adhoc_check(void *data)
@ -6473,6 +6471,7 @@ static int ipw_wpa_set_encryption(struct net_device *dev,
struct ipw_param *param, int param_len)
{
int ret = 0;
int group_key = 0;
struct ipw_priv *priv = ieee80211_priv(dev);
struct ieee80211_device *ieee = priv->ieee;
struct ieee80211_crypto_ops *ops;
@ -6502,6 +6501,9 @@ static int ipw_wpa_set_encryption(struct net_device *dev,
return -EINVAL;
}
if (param->u.crypt.idx != 0)
group_key = 1;
sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
if (strcmp(param->u.crypt.alg, "none") == 0) {
if (crypt) {
@ -6517,11 +6519,19 @@ static int ipw_wpa_set_encryption(struct net_device *dev,
sec.encrypt = 1;
/* IPW HW cannot build TKIP MIC, host decryption still needed. */
if (strcmp(param->u.crypt.alg, "TKIP") == 0)
ieee->host_encrypt_msdu = 1;
if (strcmp(param->u.crypt.alg, "TKIP") == 0) {
if (group_key)
ieee->host_mc_decrypt = 1;
else
ieee->host_encrypt_msdu = 1;
}
if (!(ieee->host_encrypt || ieee->host_encrypt_msdu ||
ieee->host_decrypt))
/*if (!(ieee->host_encrypt || ieee->host_encrypt_msdu ||
ieee->host_decrypt))
goto skip_host_crypt; */
if (group_key ? !ieee->host_mc_decrypt :
!(ieee->host_encrypt || ieee->host_decrypt ||
ieee->host_encrypt_msdu))
goto skip_host_crypt;
ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
@ -6604,6 +6614,9 @@ static int ipw_wpa_set_encryption(struct net_device *dev,
sec.flags |= SEC_LEVEL;
sec.level = SEC_LEVEL_3;
}
/* Don't set sec level for group keys. */
if (group_key)
sec.flags &= ~SEC_LEVEL;
}
done:
if (ieee->set_security)
@ -6953,15 +6966,21 @@ static int ipw_wx_set_encodeext(struct net_device *dev,
struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
if (hwcrypto) {
/* IPW HW can't build TKIP MIC, host decryption still needed */
if (ext->alg == IW_ENCODE_ALG_TKIP) {
priv->ieee->host_encrypt = 0;
priv->ieee->host_encrypt_msdu = 1;
priv->ieee->host_decrypt = 1;
/* IPW HW can't build TKIP MIC,
host decryption still needed */
if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY)
priv->ieee->host_mc_decrypt = 1;
else {
priv->ieee->host_encrypt = 0;
priv->ieee->host_encrypt_msdu = 1;
priv->ieee->host_decrypt = 1;
}
} else {
priv->ieee->host_encrypt = 0;
priv->ieee->host_encrypt_msdu = 0;
priv->ieee->host_decrypt = 0;
priv->ieee->host_mc_decrypt = 0;
}
}
@ -7878,6 +7897,7 @@ static void ipw_handle_data_packet(struct ipw_priv *priv,
struct ipw_rx_mem_buffer *rxb,
struct ieee80211_rx_stats *stats)
{
struct ieee80211_hdr_4addr *hdr;
struct ipw_rx_packet *pkt = (struct ipw_rx_packet *)rxb->skb->data;
/* We received data from the HW, so stop the watchdog */
@ -7907,7 +7927,10 @@ static void ipw_handle_data_packet(struct ipw_priv *priv,
IPW_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
/* HW decrypt will not clear the WEP bit, MIC, PN, etc. */
if (!priv->ieee->host_decrypt && priv->ieee->iw_mode != IW_MODE_MONITOR)
hdr = (struct ieee80211_hdr_4addr *)rxb->skb->data;
if (priv->ieee->iw_mode != IW_MODE_MONITOR &&
(is_multicast_ether_addr(hdr->addr1) ?
!priv->ieee->host_mc_decrypt : !priv->ieee->host_decrypt))
ipw_rebuild_decrypted_skb(priv, rxb->skb);
if (!ieee80211_rx(priv->ieee, rxb->skb, stats))
@ -8508,6 +8531,7 @@ static int ipw_sw_reset(struct ipw_priv *priv, int init)
priv->ieee->host_encrypt = 0;
priv->ieee->host_encrypt_msdu = 0;
priv->ieee->host_decrypt = 0;
priv->ieee->host_mc_decrypt = 0;
}
IPW_DEBUG_INFO("Hardware crypto [%s]\n", hwcrypto ? "on" : "off");