diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/rndis_wlan.c | 129 |
1 files changed, 76 insertions, 53 deletions
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c index 041680019a8..98f6ff753d6 100644 --- a/drivers/net/wireless/rndis_wlan.c +++ b/drivers/net/wireless/rndis_wlan.c @@ -1033,6 +1033,73 @@ static int add_wep_key(struct usbnet *usbdev, char *key, int key_len, int index) } +static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len, + int index, const struct sockaddr *addr, + const u8 *rx_seq, int alg, int flags) +{ + struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev); + struct ndis_80211_key ndis_key; + int ret; + + if (index < 0 || index >= 4) + return -EINVAL; + if (key_len > sizeof(ndis_key.material) || key_len < 0) + return -EINVAL; + if ((flags & ndis_80211_addkey_set_init_recv_seq) && !rx_seq) + return -EINVAL; + if ((flags & ndis_80211_addkey_pairwise_key) && !addr) + return -EINVAL; + + devdbg(usbdev, "add_wpa_key(%i): flags:%i%i%i", index, + !!(flags & ndis_80211_addkey_transmit_key), + !!(flags & ndis_80211_addkey_pairwise_key), + !!(flags & ndis_80211_addkey_set_init_recv_seq)); + + memset(&ndis_key, 0, sizeof(ndis_key)); + + ndis_key.size = cpu_to_le32(sizeof(ndis_key) - + sizeof(ndis_key.material) + key_len); + ndis_key.length = cpu_to_le32(key_len); + ndis_key.index = cpu_to_le32(index) | flags; + + if (alg == IW_ENCODE_ALG_TKIP && key_len == 32) { + /* wpa_supplicant gives us the Michael MIC RX/TX keys in + * different order than NDIS spec, so swap the order here. */ + memcpy(ndis_key.material, key, 16); + memcpy(ndis_key.material + 16, key + 24, 8); + memcpy(ndis_key.material + 24, key + 16, 8); + } else + memcpy(ndis_key.material, key, key_len); + + if (flags & ndis_80211_addkey_set_init_recv_seq) + memcpy(ndis_key.rsc, rx_seq, 6); + + if (flags & ndis_80211_addkey_pairwise_key) { + /* pairwise key */ + memcpy(ndis_key.bssid, addr->sa_data, ETH_ALEN); + } else { + /* group key */ + if (priv->infra_mode == ndis_80211_infra_adhoc) + memset(ndis_key.bssid, 0xff, ETH_ALEN); + else + get_bssid(usbdev, ndis_key.bssid); + } + + ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key, + le32_to_cpu(ndis_key.size)); + devdbg(usbdev, "add_wpa_key: OID_802_11_ADD_KEY -> %08X", ret); + if (ret != 0) + return ret; + + priv->encr_key_len[index] = key_len; + memcpy(&priv->encr_keys[index], ndis_key.material, key_len); + if (flags & ndis_80211_addkey_transmit_key) + priv->encr_tx_key_index = index; + + return 0; +} + + /* remove_key is for both wep and wpa */ static int remove_key(struct usbnet *usbdev, int index, u8 bssid[ETH_ALEN]) { @@ -1602,9 +1669,7 @@ static int rndis_iw_set_encode_ext(struct net_device *dev, struct iw_encode_ext *ext = (struct iw_encode_ext *)extra; struct usbnet *usbdev = netdev_priv(dev); struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev); - struct ndis_80211_key ndis_key; - int keyidx, ret; - u8 *addr; + int keyidx, flags; keyidx = wrqu->encoding.flags & IW_ENCODE_INDEX; @@ -1627,58 +1692,16 @@ static int rndis_iw_set_encode_ext(struct net_device *dev, ext->alg == IW_ENCODE_ALG_NONE || ext->key_len == 0) return remove_key(usbdev, keyidx, NULL); - if (ext->key_len > sizeof(ndis_key.material)) - return -1; - - memset(&ndis_key, 0, sizeof(ndis_key)); - - ndis_key.size = cpu_to_le32(sizeof(ndis_key) - - sizeof(ndis_key.material) + ext->key_len); - ndis_key.length = cpu_to_le32(ext->key_len); - ndis_key.index = cpu_to_le32(keyidx); - - if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) { - memcpy(ndis_key.rsc, ext->rx_seq, 6); - ndis_key.index |= ndis_80211_addkey_set_init_recv_seq; - } - - addr = ext->addr.sa_data; - if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) { - /* group key */ - if (priv->infra_mode == ndis_80211_infra_adhoc) - memset(ndis_key.bssid, 0xff, ETH_ALEN); - else - get_bssid(usbdev, ndis_key.bssid); - } else { - /* pairwise key */ - ndis_key.index |= ndis_80211_addkey_pairwise_key; - memcpy(ndis_key.bssid, addr, ETH_ALEN); - } - + flags = 0; + if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) + flags |= ndis_80211_addkey_set_init_recv_seq; + if (!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY)) + flags |= ndis_80211_addkey_pairwise_key; if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) - ndis_key.index |= ndis_80211_addkey_transmit_key; - - if (ext->alg == IW_ENCODE_ALG_TKIP && ext->key_len == 32) { - /* wpa_supplicant gives us the Michael MIC RX/TX keys in - * different order than NDIS spec, so swap the order here. */ - memcpy(ndis_key.material, ext->key, 16); - memcpy(ndis_key.material + 16, ext->key + 24, 8); - memcpy(ndis_key.material + 24, ext->key + 16, 8); - } else - memcpy(ndis_key.material, ext->key, ext->key_len); + flags |= ndis_80211_addkey_transmit_key; - ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key, - le32_to_cpu(ndis_key.size)); - devdbg(usbdev, "SIOCSIWENCODEEXT: OID_802_11_ADD_KEY -> %08X", ret); - if (ret != 0) - return ret; - - priv->encr_key_len[keyidx] = ext->key_len; - memcpy(&priv->encr_keys[keyidx], ndis_key.material, ext->key_len); - if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) - priv->encr_tx_key_index = keyidx; - - return 0; + return add_wpa_key(usbdev, ext->key, ext->key_len, keyidx, &ext->addr, + ext->rx_seq, ext->alg, flags); } |