From f752dcd52923b8de82881cf1269f0dc03dbd1088 Mon Sep 17 00:00:00 2001 From: Avinash Patil Date: Tue, 8 May 2012 18:30:26 -0700 Subject: [PATCH] mwifiex: add WPA2 support for AP 1. Support for parsing security related parameters from cfg80211_ap_settings in start_ap cfg80211 handler 2. Conversion of these security information into FW understandle TLVs and setting into FW thru sys_config command 3. key management is done on host. This ensures that FW forwards EAPOL key packets to host instead of processing on its own. Signed-off-by: Avinash Patil Signed-off-by: Kiran Divekar Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/cfg80211.c | 9 ++ drivers/net/wireless/mwifiex/fw.h | 53 +++++++ drivers/net/wireless/mwifiex/ioctl.h | 16 ++ drivers/net/wireless/mwifiex/main.h | 3 + drivers/net/wireless/mwifiex/uap_cmd.c | 187 ++++++++++++++++++++++++ 5 files changed, 268 insertions(+) diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c index e7882e56950d..6c343218d9f0 100644 --- a/drivers/net/wireless/mwifiex/cfg80211.c +++ b/drivers/net/wireless/mwifiex/cfg80211.c @@ -950,6 +950,9 @@ static int mwifiex_cfg80211_start_ap(struct wiphy *wiphy, struct mwifiex_uap_bss_param *bss_cfg; struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); + if (priv->bss_type != MWIFIEX_BSS_TYPE_UAP) + return -1; + bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param), GFP_KERNEL); if (!bss_cfg) return -ENOMEM; @@ -966,6 +969,12 @@ static int mwifiex_cfg80211_start_ap(struct wiphy *wiphy, bss_cfg->ssid.ssid_len = params->ssid_len; } + if (mwifiex_set_secure_params(priv, bss_cfg, params)) { + kfree(bss_cfg); + wiphy_err(wiphy, "Failed to parse secuirty parameters!\n"); + return -1; + } + if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP, HostCmd_ACT_GEN_SET, 0, NULL)) { wiphy_err(wiphy, "Failed to stop the BSS\n"); diff --git a/drivers/net/wireless/mwifiex/fw.h b/drivers/net/wireless/mwifiex/fw.h index 77f82fc811e2..57fd0ca6e428 100644 --- a/drivers/net/wireless/mwifiex/fw.h +++ b/drivers/net/wireless/mwifiex/fw.h @@ -111,6 +111,9 @@ enum MWIFIEX_802_11_PRIVACY_FILTER { #define TLV_TYPE_UAP_BEACON_PERIOD (PROPRIETARY_TLV_BASE_ID + 44) #define TLV_TYPE_UAP_DTIM_PERIOD (PROPRIETARY_TLV_BASE_ID + 45) #define TLV_TYPE_UAP_RTS_THRESHOLD (PROPRIETARY_TLV_BASE_ID + 51) +#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) #define TLV_TYPE_UAP_FRAG_THRESHOLD (PROPRIETARY_TLV_BASE_ID + 70) #define TLV_TYPE_RATE_DROP_CONTROL (PROPRIETARY_TLV_BASE_ID + 82) #define TLV_TYPE_RATE_SCOPE (PROPRIETARY_TLV_BASE_ID + 83) @@ -121,6 +124,8 @@ enum MWIFIEX_802_11_PRIVACY_FILTER { #define TLV_TYPE_MGMT_IE (PROPRIETARY_TLV_BASE_ID + 105) #define TLV_TYPE_AUTO_DS_PARAM (PROPRIETARY_TLV_BASE_ID + 113) #define TLV_TYPE_PS_PARAM (PROPRIETARY_TLV_BASE_ID + 114) +#define TLV_TYPE_PWK_CIPHER (PROPRIETARY_TLV_BASE_ID + 145) +#define TLV_TYPE_GWK_CIPHER (PROPRIETARY_TLV_BASE_ID + 146) #define MWIFIEX_TX_DATA_BUF_SIZE_2K 2048 @@ -235,6 +240,19 @@ enum MWIFIEX_802_11_PRIVACY_FILTER { #define HostCmd_CMD_SET_BSS_MODE 0x00f7 #define HostCmd_CMD_PCIE_DESC_DETAILS 0x00fa +#define PROTOCOL_NO_SECURITY 0x01 +#define PROTOCOL_STATIC_WEP 0x02 +#define PROTOCOL_WPA 0x08 +#define PROTOCOL_WPA2 0x20 +#define PROTOCOL_WPA2_MIXED 0x28 +#define PROTOCOL_EAP 0x40 +#define KEY_MGMT_NONE 0x04 +#define KEY_MGMT_PSK 0x02 +#define KEY_MGMT_EAP 0x01 +#define CIPHER_TKIP 0x04 +#define CIPHER_AES_CCMP 0x08 +#define VALID_CIPHER_BITMAP 0x0c + enum ENH_PS_MODES { EN_PS = 1, DIS_PS = 2, @@ -1139,6 +1157,41 @@ struct host_cmd_ds_sys_config { __le16 action; u8 tlv[0]; }; + +struct host_cmd_tlv_akmp { + struct host_cmd_tlv tlv; + __le16 key_mgmt; + __le16 key_mgmt_operation; +} __packed; + +struct host_cmd_tlv_pwk_cipher { + struct host_cmd_tlv tlv; + __le16 proto; + u8 cipher; + u8 reserved; +} __packed; + +struct host_cmd_tlv_gwk_cipher { + struct host_cmd_tlv tlv; + u8 cipher; + u8 reserved; +} __packed; + +struct host_cmd_tlv_passphrase { + struct host_cmd_tlv tlv; + u8 passphrase[0]; +} __packed; + +struct host_cmd_tlv_auth_type { + struct host_cmd_tlv tlv; + u8 auth_type; +} __packed; + +struct host_cmd_tlv_encrypt_protocol { + struct host_cmd_tlv tlv; + __le16 proto; +} __packed; + struct host_cmd_tlv_ssid { struct host_cmd_tlv tlv; u8 ssid[0]; diff --git a/drivers/net/wireless/mwifiex/ioctl.h b/drivers/net/wireless/mwifiex/ioctl.h index 99a7168022d0..eb14f558b118 100644 --- a/drivers/net/wireless/mwifiex/ioctl.h +++ b/drivers/net/wireless/mwifiex/ioctl.h @@ -62,6 +62,17 @@ enum { BAND_AN = 16, }; +#define MWIFIEX_WPA_PASSHPHRASE_LEN 64 +struct wpa_param { + u8 pairwise_cipher_wpa; + u8 pairwise_cipher_wpa2; + u8 group_cipher; + u32 length; + u8 passphrase[MWIFIEX_WPA_PASSHPHRASE_LEN]; +}; + +#define KEY_MGMT_ON_HOST 0x03 +#define MWIFIEX_AUTH_MODE_AUTO 0xFF #define BAND_CONFIG_MANUAL 0x00 struct mwifiex_uap_bss_param { u8 channel; @@ -74,6 +85,11 @@ struct mwifiex_uap_bss_param { u8 radio_ctl; u8 dtim_period; u16 beacon_period; + u16 auth_mode; + u16 protocol; + u16 key_mgmt; + u16 key_mgmt_operation; + struct wpa_param wpa_cfg; }; enum { diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h index b0a8338d2c8a..824bd436c3ae 100644 --- a/drivers/net/wireless/mwifiex/main.h +++ b/drivers/net/wireless/mwifiex/main.h @@ -826,6 +826,9 @@ int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv, int is_command_pending(struct mwifiex_adapter *adapter); void mwifiex_init_priv_params(struct mwifiex_private *priv, struct net_device *dev); +int mwifiex_set_secure_params(struct mwifiex_private *priv, + struct mwifiex_uap_bss_param *bss_config, + struct cfg80211_ap_settings *params); /* * This function checks if the queuing is RA based or not. diff --git a/drivers/net/wireless/mwifiex/uap_cmd.c b/drivers/net/wireless/mwifiex/uap_cmd.c index 66047cff7eb7..0cfe88849e94 100644 --- a/drivers/net/wireless/mwifiex/uap_cmd.c +++ b/drivers/net/wireless/mwifiex/uap_cmd.c @@ -19,12 +19,105 @@ #include "main.h" +/* This function parses security related parameters from cfg80211_ap_settings + * and sets into FW understandable bss_config structure. + */ +int mwifiex_set_secure_params(struct mwifiex_private *priv, + struct mwifiex_uap_bss_param *bss_config, + struct cfg80211_ap_settings *params) { + int i; + + switch (params->auth_type) { + case NL80211_AUTHTYPE_OPEN_SYSTEM: + bss_config->auth_mode = WLAN_AUTH_OPEN; + break; + case NL80211_AUTHTYPE_SHARED_KEY: + bss_config->auth_mode = WLAN_AUTH_SHARED_KEY; + break; + case NL80211_AUTHTYPE_NETWORK_EAP: + bss_config->auth_mode = WLAN_AUTH_LEAP; + break; + default: + bss_config->auth_mode = MWIFIEX_AUTH_MODE_AUTO; + break; + } + + bss_config->key_mgmt_operation |= KEY_MGMT_ON_HOST; + + for (i = 0; i < params->crypto.n_akm_suites; i++) { + switch (params->crypto.akm_suites[i]) { + case WLAN_AKM_SUITE_8021X: + if (params->crypto.wpa_versions & + NL80211_WPA_VERSION_1) { + bss_config->protocol = PROTOCOL_WPA; + bss_config->key_mgmt = KEY_MGMT_EAP; + } + if (params->crypto.wpa_versions & + NL80211_WPA_VERSION_2) { + bss_config->protocol = PROTOCOL_WPA2; + bss_config->key_mgmt = KEY_MGMT_EAP; + } + break; + case WLAN_AKM_SUITE_PSK: + if (params->crypto.wpa_versions & + NL80211_WPA_VERSION_1) { + bss_config->protocol = PROTOCOL_WPA; + bss_config->key_mgmt = KEY_MGMT_PSK; + } + if (params->crypto.wpa_versions & + NL80211_WPA_VERSION_2) { + bss_config->protocol = PROTOCOL_WPA2; + bss_config->key_mgmt = KEY_MGMT_PSK; + } + break; + default: + break; + } + } + for (i = 0; i < params->crypto.n_ciphers_pairwise; i++) { + switch (params->crypto.ciphers_pairwise[i]) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + break; + case WLAN_CIPHER_SUITE_TKIP: + bss_config->wpa_cfg.pairwise_cipher_wpa = CIPHER_TKIP; + break; + case WLAN_CIPHER_SUITE_CCMP: + bss_config->wpa_cfg.pairwise_cipher_wpa2 = + CIPHER_AES_CCMP; + default: + break; + } + } + + switch (params->crypto.cipher_group) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + break; + case WLAN_CIPHER_SUITE_TKIP: + bss_config->wpa_cfg.group_cipher = CIPHER_TKIP; + break; + case WLAN_CIPHER_SUITE_CCMP: + bss_config->wpa_cfg.group_cipher = CIPHER_AES_CCMP; + break; + default: + break; + } + + return 0; +} + /* This function initializes some of mwifiex_uap_bss_param variables. * This helps FW in ignoring invalid values. These values may or may not * be get updated to valid ones at later stage. */ void mwifiex_set_sys_config_invalid_data(struct mwifiex_uap_bss_param *config) { + config->bcast_ssid_ctl = 0x7F; + config->radio_ctl = 0x7F; + config->dtim_period = 0x7F; + config->beacon_period = 0x7FFF; + config->auth_mode = 0x7F; config->rts_threshold = 0x7FFF; config->frag_threshold = 0x7FFF; config->retry_limit = 0x7F; @@ -45,6 +138,12 @@ static int mwifiex_cmd_uap_sys_config(struct host_cmd_ds_command *cmd, struct host_cmd_tlv_frag_threshold *frag_threshold; struct host_cmd_tlv_rts_threshold *rts_threshold; struct host_cmd_tlv_retry_limit *retry_limit; + struct host_cmd_tlv_pwk_cipher *pwk_cipher; + struct host_cmd_tlv_gwk_cipher *gwk_cipher; + struct host_cmd_tlv_encrypt_protocol *encrypt_protocol; + struct host_cmd_tlv_auth_type *auth_type; + struct host_cmd_tlv_passphrase *passphrase; + struct host_cmd_tlv_akmp *tlv_akmp; struct mwifiex_uap_bss_param *bss_cfg = cmd_buf; u16 cmd_size; @@ -131,6 +230,94 @@ static int mwifiex_cmd_uap_sys_config(struct host_cmd_ds_command *cmd, cmd_size += sizeof(struct host_cmd_tlv_retry_limit); tlv += sizeof(struct host_cmd_tlv_retry_limit); } + if ((bss_cfg->protocol & PROTOCOL_WPA) || + (bss_cfg->protocol & PROTOCOL_WPA2) || + (bss_cfg->protocol & PROTOCOL_EAP)) { + tlv_akmp = (struct host_cmd_tlv_akmp *)tlv; + tlv_akmp->tlv.type = cpu_to_le16(TLV_TYPE_UAP_AKMP); + tlv_akmp->tlv.len = + cpu_to_le16(sizeof(struct host_cmd_tlv_akmp) - + sizeof(struct host_cmd_tlv)); + tlv_akmp->key_mgmt_operation = + cpu_to_le16(bss_cfg->key_mgmt_operation); + tlv_akmp->key_mgmt = cpu_to_le16(bss_cfg->key_mgmt); + cmd_size += sizeof(struct host_cmd_tlv_akmp); + tlv += sizeof(struct host_cmd_tlv_akmp); + + if (bss_cfg->wpa_cfg.pairwise_cipher_wpa & + VALID_CIPHER_BITMAP) { + pwk_cipher = (struct host_cmd_tlv_pwk_cipher *)tlv; + pwk_cipher->tlv.type = + cpu_to_le16(TLV_TYPE_PWK_CIPHER); + pwk_cipher->tlv.len = cpu_to_le16( + sizeof(struct host_cmd_tlv_pwk_cipher) - + sizeof(struct host_cmd_tlv)); + pwk_cipher->proto = cpu_to_le16(PROTOCOL_WPA); + pwk_cipher->cipher = + bss_cfg->wpa_cfg.pairwise_cipher_wpa; + cmd_size += sizeof(struct host_cmd_tlv_pwk_cipher); + tlv += sizeof(struct host_cmd_tlv_pwk_cipher); + } + if (bss_cfg->wpa_cfg.pairwise_cipher_wpa2 & + VALID_CIPHER_BITMAP) { + pwk_cipher = (struct host_cmd_tlv_pwk_cipher *)tlv; + pwk_cipher->tlv.type = cpu_to_le16(TLV_TYPE_PWK_CIPHER); + pwk_cipher->tlv.len = cpu_to_le16( + sizeof(struct host_cmd_tlv_pwk_cipher) - + sizeof(struct host_cmd_tlv)); + pwk_cipher->proto = cpu_to_le16(PROTOCOL_WPA2); + pwk_cipher->cipher = + bss_cfg->wpa_cfg.pairwise_cipher_wpa2; + cmd_size += sizeof(struct host_cmd_tlv_pwk_cipher); + tlv += sizeof(struct host_cmd_tlv_pwk_cipher); + } + if (bss_cfg->wpa_cfg.group_cipher & VALID_CIPHER_BITMAP) { + gwk_cipher = (struct host_cmd_tlv_gwk_cipher *)tlv; + gwk_cipher->tlv.type = cpu_to_le16(TLV_TYPE_GWK_CIPHER); + gwk_cipher->tlv.len = cpu_to_le16( + sizeof(struct host_cmd_tlv_gwk_cipher) - + sizeof(struct host_cmd_tlv)); + gwk_cipher->cipher = bss_cfg->wpa_cfg.group_cipher; + cmd_size += sizeof(struct host_cmd_tlv_gwk_cipher); + tlv += sizeof(struct host_cmd_tlv_gwk_cipher); + } + if (bss_cfg->wpa_cfg.length) { + passphrase = (struct host_cmd_tlv_passphrase *)tlv; + passphrase->tlv.type = + cpu_to_le16(TLV_TYPE_UAP_WPA_PASSPHRASE); + passphrase->tlv.len = + cpu_to_le16(bss_cfg->wpa_cfg.length); + memcpy(passphrase->passphrase, + bss_cfg->wpa_cfg.passphrase, + bss_cfg->wpa_cfg.length); + cmd_size += sizeof(struct host_cmd_tlv) + + bss_cfg->wpa_cfg.length; + tlv += sizeof(struct host_cmd_tlv) + + bss_cfg->wpa_cfg.length; + } + } + if ((bss_cfg->auth_mode <= WLAN_AUTH_SHARED_KEY) || + (bss_cfg->auth_mode == MWIFIEX_AUTH_MODE_AUTO)) { + auth_type = (struct host_cmd_tlv_auth_type *)tlv; + auth_type->tlv.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE); + auth_type->tlv.len = + cpu_to_le16(sizeof(struct host_cmd_tlv_auth_type) - + sizeof(struct host_cmd_tlv)); + auth_type->auth_type = (u8)bss_cfg->auth_mode; + cmd_size += sizeof(struct host_cmd_tlv_auth_type); + tlv += sizeof(struct host_cmd_tlv_auth_type); + } + if (bss_cfg->protocol) { + encrypt_protocol = (struct host_cmd_tlv_encrypt_protocol *)tlv; + encrypt_protocol->tlv.type = + cpu_to_le16(TLV_TYPE_UAP_ENCRY_PROTOCOL); + encrypt_protocol->tlv.len = + cpu_to_le16(sizeof(struct host_cmd_tlv_encrypt_protocol) + - sizeof(struct host_cmd_tlv)); + encrypt_protocol->proto = cpu_to_le16(bss_cfg->protocol); + cmd_size += sizeof(struct host_cmd_tlv_encrypt_protocol); + tlv += sizeof(struct host_cmd_tlv_encrypt_protocol); + } cmd->size = cpu_to_le16(cmd_size); return 0; -- 2.30.2