From 96893538564c43276dffe5e294b56935197cf1c8 Mon Sep 17 00:00:00 2001 From: Avinash Patil Date: Fri, 15 Jun 2012 12:21:55 -0700 Subject: [PATCH] mwifiex: support for WEP in AP mode This patch adds support for WEP open/shared encryption in AP mode. Signed-off-by: Avinash Patil Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/cfg80211.c | 30 +++++++++++- drivers/net/wireless/mwifiex/fw.h | 8 ++++ drivers/net/wireless/mwifiex/ioctl.h | 9 ++++ drivers/net/wireless/mwifiex/uap_cmd.c | 62 +++++++++++++++++++++++++ 4 files changed, 108 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c index 5af3f97936e4..9c2e08e4b093 100644 --- a/drivers/net/wireless/mwifiex/cfg80211.c +++ b/drivers/net/wireless/mwifiex/cfg80211.c @@ -170,7 +170,9 @@ mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev, if (!priv->sec_info.wep_enabled) return 0; - if (mwifiex_set_encode(priv, NULL, 0, key_index, NULL, 0)) { + if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) { + priv->wep_key_curr_index = key_index; + } else if (mwifiex_set_encode(priv, NULL, 0, key_index, NULL, 0)) { wiphy_err(wiphy, "set default Tx key index\n"); return -EFAULT; } @@ -187,9 +189,25 @@ mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev, struct key_params *params) { struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev); + struct mwifiex_wep_key *wep_key; const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; const u8 *peer_mac = pairwise ? mac_addr : bc_mac; + if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP && + (params->cipher == WLAN_CIPHER_SUITE_WEP40 || + params->cipher == WLAN_CIPHER_SUITE_WEP104)) { + if (params->key && params->key_len) { + wep_key = &priv->wep_key[key_index]; + memset(wep_key, 0, sizeof(struct mwifiex_wep_key)); + memcpy(wep_key->key_material, params->key, + params->key_len); + wep_key->key_index = key_index; + wep_key->key_length = params->key_len; + priv->sec_info.wep_enabled = 1; + } + return 0; + } + if (mwifiex_set_encode(priv, params->key, params->key_len, key_index, peer_mac, 0)) { wiphy_err(wiphy, "crypto keys added\n"); @@ -1003,6 +1021,16 @@ static int mwifiex_cfg80211_start_ap(struct wiphy *wiphy, return -1; } + if (priv->sec_info.wep_enabled) + priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE; + else + priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE; + + if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL, + HostCmd_ACT_GEN_SET, 0, + &priv->curr_pkt_filter)) + return -1; + return 0; } diff --git a/drivers/net/wireless/mwifiex/fw.h b/drivers/net/wireless/mwifiex/fw.h index 9686f6fec19a..1184141839ae 100644 --- a/drivers/net/wireless/mwifiex/fw.h +++ b/drivers/net/wireless/mwifiex/fw.h @@ -124,6 +124,7 @@ enum MWIFIEX_802_11_PRIVACY_FILTER { #define TLV_TYPE_UAP_DTIM_PERIOD (PROPRIETARY_TLV_BASE_ID + 45) #define TLV_TYPE_UAP_BCAST_SSID (PROPRIETARY_TLV_BASE_ID + 48) #define TLV_TYPE_UAP_RTS_THRESHOLD (PROPRIETARY_TLV_BASE_ID + 51) +#define TLV_TYPE_UAP_WEP_KEY (PROPRIETARY_TLV_BASE_ID + 59) #define TLV_TYPE_UAP_WPA_PASSPHRASE (PROPRIETARY_TLV_BASE_ID + 60) #define TLV_TYPE_UAP_ENCRY_PROTOCOL (PROPRIETARY_TLV_BASE_ID + 64) #define TLV_TYPE_UAP_AKMP (PROPRIETARY_TLV_BASE_ID + 65) @@ -1201,6 +1202,13 @@ struct host_cmd_tlv_passphrase { u8 passphrase[0]; } __packed; +struct host_cmd_tlv_wep_key { + struct host_cmd_tlv tlv; + u8 key_index; + u8 is_default; + u8 key[1]; +}; + struct host_cmd_tlv_auth_type { struct host_cmd_tlv tlv; u8 auth_type; diff --git a/drivers/net/wireless/mwifiex/ioctl.h b/drivers/net/wireless/mwifiex/ioctl.h index 8c8e47c792a0..9f088fb88cb7 100644 --- a/drivers/net/wireless/mwifiex/ioctl.h +++ b/drivers/net/wireless/mwifiex/ioctl.h @@ -21,6 +21,7 @@ #define _MWIFIEX_IOCTL_H_ #include +#include enum { MWIFIEX_SCAN_TYPE_UNCHANGED = 0, @@ -71,6 +72,13 @@ struct wpa_param { u8 passphrase[MWIFIEX_WPA_PASSHPHRASE_LEN]; }; +struct wep_key { + u8 key_index; + u8 is_default; + u16 length; + u8 key[WLAN_KEY_LEN_WEP104]; +}; + #define KEY_MGMT_ON_HOST 0x03 #define MWIFIEX_AUTH_MODE_AUTO 0xFF #define BAND_CONFIG_MANUAL 0x00 @@ -90,6 +98,7 @@ struct mwifiex_uap_bss_param { u16 key_mgmt; u16 key_mgmt_operation; struct wpa_param wpa_cfg; + struct wep_key wep_cfg[NUM_WEP_KEYS]; struct ieee80211_ht_cap ht_cap; }; diff --git a/drivers/net/wireless/mwifiex/uap_cmd.c b/drivers/net/wireless/mwifiex/uap_cmd.c index 86a4432df7a8..abb1322a8ceb 100644 --- a/drivers/net/wireless/mwifiex/uap_cmd.c +++ b/drivers/net/wireless/mwifiex/uap_cmd.c @@ -26,6 +26,7 @@ int mwifiex_set_secure_params(struct mwifiex_private *priv, struct mwifiex_uap_bss_param *bss_config, struct cfg80211_ap_settings *params) { int i; + struct mwifiex_wep_key wep_key; if (!params->privacy) { bss_config->protocol = PROTOCOL_NO_SECURITY; @@ -104,6 +105,27 @@ int mwifiex_set_secure_params(struct mwifiex_private *priv, switch (params->crypto.cipher_group) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: + if (priv->sec_info.wep_enabled) { + bss_config->protocol = PROTOCOL_STATIC_WEP; + bss_config->key_mgmt = KEY_MGMT_NONE; + bss_config->wpa_cfg.length = 0; + + for (i = 0; i < NUM_WEP_KEYS; i++) { + wep_key = priv->wep_key[i]; + bss_config->wep_cfg[i].key_index = i; + + if (priv->wep_key_curr_index == i) + bss_config->wep_cfg[i].is_default = 1; + else + bss_config->wep_cfg[i].is_default = 0; + + bss_config->wep_cfg[i].length = + wep_key.key_length; + memcpy(&bss_config->wep_cfg[i].key, + &wep_key.key_material, + wep_key.key_length); + } + } break; case WLAN_CIPHER_SUITE_TKIP: bss_config->wpa_cfg.group_cipher = CIPHER_TKIP; @@ -237,6 +259,44 @@ mwifiex_uap_bss_wpa(u8 **tlv_buf, void *cmd_buf, u16 *param_size) return; } +/* This function parses BSS related parameters from structure + * and prepares TLVs specific to WEP encryption. + * These TLVs are appended to command buffer. + */ +static void +mwifiex_uap_bss_wep(u8 **tlv_buf, void *cmd_buf, u16 *param_size) +{ + struct host_cmd_tlv_wep_key *wep_key; + u16 cmd_size = *param_size; + int i; + u8 *tlv = *tlv_buf; + struct mwifiex_uap_bss_param *bss_cfg = cmd_buf; + + for (i = 0; i < NUM_WEP_KEYS; i++) { + if (bss_cfg->wep_cfg[i].length && + (bss_cfg->wep_cfg[i].length == WLAN_KEY_LEN_WEP40 || + bss_cfg->wep_cfg[i].length == WLAN_KEY_LEN_WEP104)) { + wep_key = (struct host_cmd_tlv_wep_key *)tlv; + wep_key->tlv.type = cpu_to_le16(TLV_TYPE_UAP_WEP_KEY); + wep_key->tlv.len = + cpu_to_le16(bss_cfg->wep_cfg[i].length + 2); + wep_key->key_index = bss_cfg->wep_cfg[i].key_index; + wep_key->is_default = bss_cfg->wep_cfg[i].is_default; + memcpy(wep_key->key, bss_cfg->wep_cfg[i].key, + bss_cfg->wep_cfg[i].length); + cmd_size += sizeof(struct host_cmd_tlv) + 2 + + bss_cfg->wep_cfg[i].length; + tlv += sizeof(struct host_cmd_tlv) + 2 + + bss_cfg->wep_cfg[i].length; + } + } + + *param_size = cmd_size; + *tlv_buf = tlv; + + return; +} + /* This function parses BSS related parameters from structure * and prepares TLVs. These TLVs are appended to command buffer. */ @@ -345,6 +405,8 @@ mwifiex_uap_bss_param_prepare(u8 *tlv, void *cmd_buf, u16 *param_size) (bss_cfg->protocol & PROTOCOL_WPA2) || (bss_cfg->protocol & PROTOCOL_EAP)) mwifiex_uap_bss_wpa(&tlv, cmd_buf, &cmd_size); + else + mwifiex_uap_bss_wep(&tlv, cmd_buf, &cmd_size); if ((bss_cfg->auth_mode <= WLAN_AUTH_SHARED_KEY) || (bss_cfg->auth_mode == MWIFIEX_AUTH_MODE_AUTO)) { -- 2.20.1