diff options
Diffstat (limited to 'drivers/net/wireless/rndis_wlan.c')
| -rw-r--r-- | drivers/net/wireless/rndis_wlan.c | 3768 |
1 files changed, 3768 insertions, 0 deletions
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c new file mode 100644 index 000000000..d72ff8e71 --- /dev/null +++ b/drivers/net/wireless/rndis_wlan.c @@ -0,0 +1,3768 @@ +/* + * Driver for RNDIS based wireless USB devices. + * + * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net> + * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@iki.fi> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + * + * Portions of this file are based on NDISwrapper project, + * Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani + * http://ndiswrapper.sourceforge.net/ + */ + +// #define DEBUG // error path messages, extra info +// #define VERBOSE // more; success messages + +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/ethtool.h> +#include <linux/workqueue.h> +#include <linux/mutex.h> +#include <linux/mii.h> +#include <linux/usb.h> +#include <linux/usb/cdc.h> +#include <linux/ieee80211.h> +#include <linux/if_arp.h> +#include <linux/ctype.h> +#include <linux/spinlock.h> +#include <linux/slab.h> +#include <net/cfg80211.h> +#include <linux/usb/usbnet.h> +#include <linux/usb/rndis_host.h> + + +/* NOTE: All these are settings for Broadcom chipset */ +static char modparam_country[4] = "EU"; +module_param_string(country, modparam_country, 4, 0444); +MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU"); + +static int modparam_frameburst = 1; +module_param_named(frameburst, modparam_frameburst, int, 0444); +MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)"); + +static int modparam_afterburner = 0; +module_param_named(afterburner, modparam_afterburner, int, 0444); +MODULE_PARM_DESC(afterburner, + "enable afterburner aka '125 High Speed Mode' (default: off)"); + +static int modparam_power_save = 0; +module_param_named(power_save, modparam_power_save, int, 0444); +MODULE_PARM_DESC(power_save, + "set power save mode: 0=off, 1=on, 2=fast (default: off)"); + +static int modparam_power_output = 3; +module_param_named(power_output, modparam_power_output, int, 0444); +MODULE_PARM_DESC(power_output, + "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)"); + +static int modparam_roamtrigger = -70; +module_param_named(roamtrigger, modparam_roamtrigger, int, 0444); +MODULE_PARM_DESC(roamtrigger, + "set roaming dBm trigger: -80=optimize for distance, " + "-60=bandwidth (default: -70)"); + +static int modparam_roamdelta = 1; +module_param_named(roamdelta, modparam_roamdelta, int, 0444); +MODULE_PARM_DESC(roamdelta, + "set roaming tendency: 0=aggressive, 1=moderate, " + "2=conservative (default: moderate)"); + +static int modparam_workaround_interval; +module_param_named(workaround_interval, modparam_workaround_interval, + int, 0444); +MODULE_PARM_DESC(workaround_interval, + "set stall workaround interval in msecs (0=disabled) (default: 0)"); + +/* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */ +#define WL_NOISE -96 /* typical noise level in dBm */ +#define WL_SIGMAX -32 /* typical maximum signal level in dBm */ + + +/* Assume that Broadcom 4320 (only chipset at time of writing known to be + * based on wireless rndis) has default txpower of 13dBm. + * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications. + * 100% : 20 mW ~ 13dBm + * 75% : 15 mW ~ 12dBm + * 50% : 10 mW ~ 10dBm + * 25% : 5 mW ~ 7dBm + */ +#define BCM4320_DEFAULT_TXPOWER_DBM_100 13 +#define BCM4320_DEFAULT_TXPOWER_DBM_75 12 +#define BCM4320_DEFAULT_TXPOWER_DBM_50 10 +#define BCM4320_DEFAULT_TXPOWER_DBM_25 7 + +/* Known device types */ +#define RNDIS_UNKNOWN 0 +#define RNDIS_BCM4320A 1 +#define RNDIS_BCM4320B 2 + + +/* NDIS data structures. Taken from wpa_supplicant driver_ndis.c + * slightly modified for datatype endianess, etc + */ +#define NDIS_802_11_LENGTH_SSID 32 +#define NDIS_802_11_LENGTH_RATES 8 +#define NDIS_802_11_LENGTH_RATES_EX 16 + +enum ndis_80211_net_type { + NDIS_80211_TYPE_FREQ_HOP, + NDIS_80211_TYPE_DIRECT_SEQ, + NDIS_80211_TYPE_OFDM_A, + NDIS_80211_TYPE_OFDM_G +}; + +enum ndis_80211_net_infra { + NDIS_80211_INFRA_ADHOC, + NDIS_80211_INFRA_INFRA, + NDIS_80211_INFRA_AUTO_UNKNOWN +}; + +enum ndis_80211_auth_mode { + NDIS_80211_AUTH_OPEN, + NDIS_80211_AUTH_SHARED, + NDIS_80211_AUTH_AUTO_SWITCH, + NDIS_80211_AUTH_WPA, + NDIS_80211_AUTH_WPA_PSK, + NDIS_80211_AUTH_WPA_NONE, + NDIS_80211_AUTH_WPA2, + NDIS_80211_AUTH_WPA2_PSK +}; + +enum ndis_80211_encr_status { + NDIS_80211_ENCR_WEP_ENABLED, + NDIS_80211_ENCR_DISABLED, + NDIS_80211_ENCR_WEP_KEY_ABSENT, + NDIS_80211_ENCR_NOT_SUPPORTED, + NDIS_80211_ENCR_TKIP_ENABLED, + NDIS_80211_ENCR_TKIP_KEY_ABSENT, + NDIS_80211_ENCR_CCMP_ENABLED, + NDIS_80211_ENCR_CCMP_KEY_ABSENT +}; + +enum ndis_80211_priv_filter { + NDIS_80211_PRIV_ACCEPT_ALL, + NDIS_80211_PRIV_8021X_WEP +}; + +enum ndis_80211_status_type { + NDIS_80211_STATUSTYPE_AUTHENTICATION, + NDIS_80211_STATUSTYPE_MEDIASTREAMMODE, + NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST, + NDIS_80211_STATUSTYPE_RADIOSTATE, +}; + +enum ndis_80211_media_stream_mode { + NDIS_80211_MEDIA_STREAM_OFF, + NDIS_80211_MEDIA_STREAM_ON +}; + +enum ndis_80211_radio_status { + NDIS_80211_RADIO_STATUS_ON, + NDIS_80211_RADIO_STATUS_HARDWARE_OFF, + NDIS_80211_RADIO_STATUS_SOFTWARE_OFF, +}; + +enum ndis_80211_addkey_bits { + NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28), + NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29), + NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30), + NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31) +}; + +enum ndis_80211_addwep_bits { + NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30), + NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31) +}; + +enum ndis_80211_power_mode { + NDIS_80211_POWER_MODE_CAM, + NDIS_80211_POWER_MODE_MAX_PSP, + NDIS_80211_POWER_MODE_FAST_PSP, +}; + +enum ndis_80211_pmkid_cand_list_flag_bits { + NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0) +}; + +struct ndis_80211_auth_request { + __le32 length; + u8 bssid[ETH_ALEN]; + u8 padding[2]; + __le32 flags; +} __packed; + +struct ndis_80211_pmkid_candidate { + u8 bssid[ETH_ALEN]; + u8 padding[2]; + __le32 flags; +} __packed; + +struct ndis_80211_pmkid_cand_list { + __le32 version; + __le32 num_candidates; + struct ndis_80211_pmkid_candidate candidate_list[0]; +} __packed; + +struct ndis_80211_status_indication { + __le32 status_type; + union { + __le32 media_stream_mode; + __le32 radio_status; + struct ndis_80211_auth_request auth_request[0]; + struct ndis_80211_pmkid_cand_list cand_list; + } u; +} __packed; + +struct ndis_80211_ssid { + __le32 length; + u8 essid[NDIS_802_11_LENGTH_SSID]; +} __packed; + +struct ndis_80211_conf_freq_hop { + __le32 length; + __le32 hop_pattern; + __le32 hop_set; + __le32 dwell_time; +} __packed; + +struct ndis_80211_conf { + __le32 length; + __le32 beacon_period; + __le32 atim_window; + __le32 ds_config; + struct ndis_80211_conf_freq_hop fh_config; +} __packed; + +struct ndis_80211_bssid_ex { + __le32 length; + u8 mac[ETH_ALEN]; + u8 padding[2]; + struct ndis_80211_ssid ssid; + __le32 privacy; + __le32 rssi; + __le32 net_type; + struct ndis_80211_conf config; + __le32 net_infra; + u8 rates[NDIS_802_11_LENGTH_RATES_EX]; + __le32 ie_length; + u8 ies[0]; +} __packed; + +struct ndis_80211_bssid_list_ex { + __le32 num_items; + struct ndis_80211_bssid_ex bssid[0]; +} __packed; + +struct ndis_80211_fixed_ies { + u8 timestamp[8]; + __le16 beacon_interval; + __le16 capabilities; +} __packed; + +struct ndis_80211_wep_key { + __le32 size; + __le32 index; + __le32 length; + u8 material[32]; +} __packed; + +struct ndis_80211_key { + __le32 size; + __le32 index; + __le32 length; + u8 bssid[ETH_ALEN]; + u8 padding[6]; + u8 rsc[8]; + u8 material[32]; +} __packed; + +struct ndis_80211_remove_key { + __le32 size; + __le32 index; + u8 bssid[ETH_ALEN]; + u8 padding[2]; +} __packed; + +struct ndis_config_param { + __le32 name_offs; + __le32 name_length; + __le32 type; + __le32 value_offs; + __le32 value_length; +} __packed; + +struct ndis_80211_assoc_info { + __le32 length; + __le16 req_ies; + struct req_ie { + __le16 capa; + __le16 listen_interval; + u8 cur_ap_address[ETH_ALEN]; + } req_ie; + __le32 req_ie_length; + __le32 offset_req_ies; + __le16 resp_ies; + struct resp_ie { + __le16 capa; + __le16 status_code; + __le16 assoc_id; + } resp_ie; + __le32 resp_ie_length; + __le32 offset_resp_ies; +} __packed; + +struct ndis_80211_auth_encr_pair { + __le32 auth_mode; + __le32 encr_mode; +} __packed; + +struct ndis_80211_capability { + __le32 length; + __le32 version; + __le32 num_pmkids; + __le32 num_auth_encr_pair; + struct ndis_80211_auth_encr_pair auth_encr_pair[0]; +} __packed; + +struct ndis_80211_bssid_info { + u8 bssid[ETH_ALEN]; + u8 pmkid[16]; +} __packed; + +struct ndis_80211_pmkid { + __le32 length; + __le32 bssid_info_count; + struct ndis_80211_bssid_info bssid_info[0]; +} __packed; + +/* + * private data + */ +#define CAP_MODE_80211A 1 +#define CAP_MODE_80211B 2 +#define CAP_MODE_80211G 4 +#define CAP_MODE_MASK 7 + +#define WORK_LINK_UP (1<<0) +#define WORK_LINK_DOWN (1<<1) +#define WORK_SET_MULTICAST_LIST (1<<2) + +#define RNDIS_WLAN_ALG_NONE 0 +#define RNDIS_WLAN_ALG_WEP (1<<0) +#define RNDIS_WLAN_ALG_TKIP (1<<1) +#define RNDIS_WLAN_ALG_CCMP (1<<2) + +#define RNDIS_WLAN_NUM_KEYS 4 +#define RNDIS_WLAN_KEY_MGMT_NONE 0 +#define RNDIS_WLAN_KEY_MGMT_802_1X (1<<0) +#define RNDIS_WLAN_KEY_MGMT_PSK (1<<1) + +#define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set)) + +static const struct ieee80211_channel rndis_channels[] = { + { .center_freq = 2412 }, + { .center_freq = 2417 }, + { .center_freq = 2422 }, + { .center_freq = 2427 }, + { .center_freq = 2432 }, + { .center_freq = 2437 }, + { .center_freq = 2442 }, + { .center_freq = 2447 }, + { .center_freq = 2452 }, + { .center_freq = 2457 }, + { .center_freq = 2462 }, + { .center_freq = 2467 }, + { .center_freq = 2472 }, + { .center_freq = 2484 }, +}; + +static const struct ieee80211_rate rndis_rates[] = { + { .bitrate = 10 }, + { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 60 }, + { .bitrate = 90 }, + { .bitrate = 120 }, + { .bitrate = 180 }, + { .bitrate = 240 }, + { .bitrate = 360 }, + { .bitrate = 480 }, + { .bitrate = 540 } +}; + +static const u32 rndis_cipher_suites[] = { + WLAN_CIPHER_SUITE_WEP40, + WLAN_CIPHER_SUITE_WEP104, + WLAN_CIPHER_SUITE_TKIP, + WLAN_CIPHER_SUITE_CCMP, +}; + +struct rndis_wlan_encr_key { + int len; + u32 cipher; + u8 material[32]; + u8 bssid[ETH_ALEN]; + bool pairwise; + bool tx_key; +}; + +/* RNDIS device private data */ +struct rndis_wlan_private { + struct usbnet *usbdev; + + struct wireless_dev wdev; + + struct cfg80211_scan_request *scan_request; + + struct workqueue_struct *workqueue; + struct delayed_work dev_poller_work; + struct delayed_work scan_work; + struct work_struct work; + struct mutex command_lock; + unsigned long work_pending; + int last_qual; + s32 cqm_rssi_thold; + u32 cqm_rssi_hyst; + int last_cqm_event_rssi; + + struct ieee80211_supported_band band; + struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)]; + struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)]; + u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)]; + + int device_type; + int caps; + int multicast_size; + + /* module parameters */ + char param_country[4]; + int param_frameburst; + int param_afterburner; + int param_power_save; + int param_power_output; + int param_roamtrigger; + int param_roamdelta; + u32 param_workaround_interval; + + /* hardware state */ + bool radio_on; + int power_mode; + int infra_mode; + bool connected; + u8 bssid[ETH_ALEN]; + u32 current_command_oid; + + /* encryption stuff */ + u8 encr_tx_key_index; + struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS]; + int wpa_version; + + u8 command_buffer[COMMAND_BUFFER_SIZE]; +}; + +/* + * cfg80211 ops + */ +static int rndis_change_virtual_intf(struct wiphy *wiphy, + struct net_device *dev, + enum nl80211_iftype type, u32 *flags, + struct vif_params *params); + +static int rndis_scan(struct wiphy *wiphy, + struct cfg80211_scan_request *request); + +static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed); + +static int rndis_set_tx_power(struct wiphy *wiphy, + struct wireless_dev *wdev, + enum nl80211_tx_power_setting type, + int mbm); +static int rndis_get_tx_power(struct wiphy *wiphy, + struct wireless_dev *wdev, + int *dbm); + +static int rndis_connect(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_connect_params *sme); + +static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev, + u16 reason_code); + +static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_ibss_params *params); + +static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev); + +static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev, + u8 key_index, bool pairwise, const u8 *mac_addr, + struct key_params *params); + +static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev, + u8 key_index, bool pairwise, const u8 *mac_addr); + +static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev, + u8 key_index, bool unicast, bool multicast); + +static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev, + const u8 *mac, struct station_info *sinfo); + +static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev, + int idx, u8 *mac, struct station_info *sinfo); + +static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev, + struct cfg80211_pmksa *pmksa); + +static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev, + struct cfg80211_pmksa *pmksa); + +static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev); + +static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, + bool enabled, int timeout); + +static int rndis_set_cqm_rssi_config(struct wiphy *wiphy, + struct net_device *dev, + s32 rssi_thold, u32 rssi_hyst); + +static const struct cfg80211_ops rndis_config_ops = { + .change_virtual_intf = rndis_change_virtual_intf, + .scan = rndis_scan, + .set_wiphy_params = rndis_set_wiphy_params, + .set_tx_power = rndis_set_tx_power, + .get_tx_power = rndis_get_tx_power, + .connect = rndis_connect, + .disconnect = rndis_disconnect, + .join_ibss = rndis_join_ibss, + .leave_ibss = rndis_leave_ibss, + .add_key = rndis_add_key, + .del_key = rndis_del_key, + .set_default_key = rndis_set_default_key, + .get_station = rndis_get_station, + .dump_station = rndis_dump_station, + .set_pmksa = rndis_set_pmksa, + .del_pmksa = rndis_del_pmksa, + .flush_pmksa = rndis_flush_pmksa, + .set_power_mgmt = rndis_set_power_mgmt, + .set_cqm_rssi_config = rndis_set_cqm_rssi_config, +}; + +static void *rndis_wiphy_privid = &rndis_wiphy_privid; + + +static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev) +{ + return (struct rndis_wlan_private *)dev->driver_priv; +} + +static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv) +{ + switch (priv->param_power_output) { + default: + case 3: + return BCM4320_DEFAULT_TXPOWER_DBM_100; + case 2: + return BCM4320_DEFAULT_TXPOWER_DBM_75; + case 1: + return BCM4320_DEFAULT_TXPOWER_DBM_50; + case 0: + return BCM4320_DEFAULT_TXPOWER_DBM_25; + } +} + +static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx) +{ + int cipher = priv->encr_keys[idx].cipher; + + return (cipher == WLAN_CIPHER_SUITE_CCMP || + cipher == WLAN_CIPHER_SUITE_TKIP); +} + +static int rndis_cipher_to_alg(u32 cipher) +{ + switch (cipher) { + default: + return RNDIS_WLAN_ALG_NONE; + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + return RNDIS_WLAN_ALG_WEP; + case WLAN_CIPHER_SUITE_TKIP: + return RNDIS_WLAN_ALG_TKIP; + case WLAN_CIPHER_SUITE_CCMP: + return RNDIS_WLAN_ALG_CCMP; + } +} + +static int rndis_akm_suite_to_key_mgmt(u32 akm_suite) +{ + switch (akm_suite) { + default: + return RNDIS_WLAN_KEY_MGMT_NONE; + case WLAN_AKM_SUITE_8021X: + return RNDIS_WLAN_KEY_MGMT_802_1X; + case WLAN_AKM_SUITE_PSK: + return RNDIS_WLAN_KEY_MGMT_PSK; + } +} + +#ifdef DEBUG +static const char *oid_to_string(u32 oid) +{ + switch (oid) { +#define OID_STR(oid) case oid: return(#oid) + /* from rndis_host.h */ + OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS); + OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE); + OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER); + OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM); + + /* from rndis_wlan.c */ + OID_STR(RNDIS_OID_GEN_LINK_SPEED); + OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER); + + OID_STR(RNDIS_OID_GEN_XMIT_OK); + OID_STR(RNDIS_OID_GEN_RCV_OK); + OID_STR(RNDIS_OID_GEN_XMIT_ERROR); + OID_STR(RNDIS_OID_GEN_RCV_ERROR); + OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER); + + OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS); + OID_STR(RNDIS_OID_802_3_MULTICAST_LIST); + OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE); + + OID_STR(RNDIS_OID_802_11_BSSID); + OID_STR(RNDIS_OID_802_11_SSID); + OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE); + OID_STR(RNDIS_OID_802_11_ADD_WEP); + OID_STR(RNDIS_OID_802_11_REMOVE_WEP); + OID_STR(RNDIS_OID_802_11_DISASSOCIATE); + OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE); + OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER); + OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN); + OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS); + OID_STR(RNDIS_OID_802_11_ADD_KEY); + OID_STR(RNDIS_OID_802_11_REMOVE_KEY); + OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION); + OID_STR(RNDIS_OID_802_11_CAPABILITY); + OID_STR(RNDIS_OID_802_11_PMKID); + OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED); + OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE); + OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL); + OID_STR(RNDIS_OID_802_11_RSSI); + OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER); + OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD); + OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD); + OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES); + OID_STR(RNDIS_OID_802_11_CONFIGURATION); + OID_STR(RNDIS_OID_802_11_POWER_MODE); + OID_STR(RNDIS_OID_802_11_BSSID_LIST); +#undef OID_STR + } + + return "?"; +} +#else +static const char *oid_to_string(u32 oid) +{ + return "?"; +} +#endif + +/* translate error code */ +static int rndis_error_status(__le32 rndis_status) +{ + int ret = -EINVAL; + switch (le32_to_cpu(rndis_status)) { + case RNDIS_STATUS_SUCCESS: + ret = 0; + break; + case RNDIS_STATUS_FAILURE: + case RNDIS_STATUS_INVALID_DATA: + ret = -EINVAL; + break; + case RNDIS_STATUS_NOT_SUPPORTED: + ret = -EOPNOTSUPP; + break; + case RNDIS_STATUS_ADAPTER_NOT_READY: + case RNDIS_STATUS_ADAPTER_NOT_OPEN: + ret = -EBUSY; + break; + } + return ret; +} + +static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev); + union { + void *buf; + struct rndis_msg_hdr *header; + struct rndis_query *get; + struct rndis_query_c *get_c; + } u; + int ret, buflen; + int resplen, respoffs, copylen; + + buflen = *len + sizeof(*u.get); + if (buflen < CONTROL_BUFFER_SIZE) + buflen = CONTROL_BUFFER_SIZE; + + if (buflen > COMMAND_BUFFER_SIZE) { + u.buf = kmalloc(buflen, GFP_KERNEL); + if (!u.buf) + return -ENOMEM; + } else { + u.buf = priv->command_buffer; + } + + mutex_lock(&priv->command_lock); + + memset(u.get, 0, sizeof *u.get); + u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY); + u.get->msg_len = cpu_to_le32(sizeof *u.get); + u.get->oid = cpu_to_le32(oid); + + priv->current_command_oid = oid; + ret = rndis_command(dev, u.header, buflen); + priv->current_command_oid = 0; + if (ret < 0) + netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n", + __func__, oid_to_string(oid), ret, + le32_to_cpu(u.get_c->status)); + + if (ret == 0) { + resplen = le32_to_cpu(u.get_c->len); + respoffs = le32_to_cpu(u.get_c->offset) + 8; + + if (respoffs > buflen) { + /* Device returned data offset outside buffer, error. */ + netdev_dbg(dev->net, "%s(%s): received invalid " + "data offset: %d > %d\n", __func__, + oid_to_string(oid), respoffs, buflen); + + ret = -EINVAL; + goto exit_unlock; + } + + if ((resplen + respoffs) > buflen) { + /* Device would have returned more data if buffer would + * have been big enough. Copy just the bits that we got. + */ + copylen = buflen - respoffs; + } else { + copylen = resplen; + } + + if (copylen > *len) + copylen = *len; + + memcpy(data, u.buf + respoffs, copylen); + + *len = resplen; + + ret = rndis_error_status(u.get_c->status); + if (ret < 0) + netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n", + __func__, oid_to_string(oid), + le32_to_cpu(u.get_c->status), ret); + } + +exit_unlock: + mutex_unlock(&priv->command_lock); + + if (u.buf != priv->command_buffer) + kfree(u.buf); + return ret; +} + +static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data, + int len) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev); + union { + void *buf; + struct rndis_msg_hdr *header; + struct rndis_set *set; + struct rndis_set_c *set_c; + } u; + int ret, buflen; + + buflen = len + sizeof(*u.set); + if (buflen < CONTROL_BUFFER_SIZE) + buflen = CONTROL_BUFFER_SIZE; + + if (buflen > COMMAND_BUFFER_SIZE) { + u.buf = kmalloc(buflen, GFP_KERNEL); + if (!u.buf) + return -ENOMEM; + } else { + u.buf = priv->command_buffer; + } + + mutex_lock(&priv->command_lock); + + memset(u.set, 0, sizeof *u.set); + u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET); + u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len); + u.set->oid = cpu_to_le32(oid); + u.set->len = cpu_to_le32(len); + u.set->offset = cpu_to_le32(sizeof(*u.set) - 8); + u.set->handle = cpu_to_le32(0); + memcpy(u.buf + sizeof(*u.set), data, len); + + priv->current_command_oid = oid; + ret = rndis_command(dev, u.header, buflen); + priv->current_command_oid = 0; + if (ret < 0) + netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n", + __func__, oid_to_string(oid), ret, + le32_to_cpu(u.set_c->status)); + + if (ret == 0) { + ret = rndis_error_status(u.set_c->status); + + if (ret < 0) + netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n", + __func__, oid_to_string(oid), + le32_to_cpu(u.set_c->status), ret); + } + + mutex_unlock(&priv->command_lock); + + if (u.buf != priv->command_buffer) + kfree(u.buf); + return ret; +} + +static int rndis_reset(struct usbnet *usbdev) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct rndis_reset *reset; + int ret; + + mutex_lock(&priv->command_lock); + + reset = (void *)priv->command_buffer; + memset(reset, 0, sizeof(*reset)); + reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET); + reset->msg_len = cpu_to_le32(sizeof(*reset)); + priv->current_command_oid = 0; + ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE); + + mutex_unlock(&priv->command_lock); + + if (ret < 0) + return ret; + return 0; +} + +/* + * Specs say that we can only set config parameters only soon after device + * initialization. + * value_type: 0 = u32, 2 = unicode string + */ +static int rndis_set_config_parameter(struct usbnet *dev, char *param, + int value_type, void *value) +{ + struct ndis_config_param *infobuf; + int value_len, info_len, param_len, ret, i; + __le16 *unibuf; + __le32 *dst_value; + + if (value_type == 0) + value_len = sizeof(__le32); + else if (value_type == 2) + value_len = strlen(value) * sizeof(__le16); + else + return -EINVAL; + + param_len = strlen(param) * sizeof(__le16); + info_len = sizeof(*infobuf) + param_len + value_len; + +#ifdef DEBUG + info_len += 12; +#endif + infobuf = kmalloc(info_len, GFP_KERNEL); + if (!infobuf) + return -ENOMEM; + +#ifdef DEBUG + info_len -= 12; + /* extra 12 bytes are for padding (debug output) */ + memset(infobuf, 0xCC, info_len + 12); +#endif + + if (value_type == 2) + netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n", + param, (u8 *)value); + else + netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n", + param, *(u32 *)value); + + infobuf->name_offs = cpu_to_le32(sizeof(*infobuf)); + infobuf->name_length = cpu_to_le32(param_len); + infobuf->type = cpu_to_le32(value_type); + infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len); + infobuf->value_length = cpu_to_le32(value_len); + + /* simple string to unicode string conversion */ + unibuf = (void *)infobuf + sizeof(*infobuf); + for (i = 0; i < param_len / sizeof(__le16); i++) + unibuf[i] = cpu_to_le16(param[i]); + + if (value_type == 2) { + unibuf = (void *)infobuf + sizeof(*infobuf) + param_len; + for (i = 0; i < value_len / sizeof(__le16); i++) + unibuf[i] = cpu_to_le16(((u8 *)value)[i]); + } else { + dst_value = (void *)infobuf + sizeof(*infobuf) + param_len; + *dst_value = cpu_to_le32(*(u32 *)value); + } + +#ifdef DEBUG + netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len); + for (i = 0; i < info_len; i += 12) { + u32 *tmp = (u32 *)((u8 *)infobuf + i); + netdev_dbg(dev->net, "%08X:%08X:%08X\n", + cpu_to_be32(tmp[0]), + cpu_to_be32(tmp[1]), + cpu_to_be32(tmp[2])); + } +#endif + + ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER, + infobuf, info_len); + if (ret != 0) + netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n", + ret); + + kfree(infobuf); + return ret; +} + +static int rndis_set_config_parameter_str(struct usbnet *dev, + char *param, char *value) +{ + return rndis_set_config_parameter(dev, param, 2, value); +} + +/* + * data conversion functions + */ +static int level_to_qual(int level) +{ + int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE); + return qual >= 0 ? (qual <= 100 ? qual : 100) : 0; +} + +/* + * common functions + */ +static int set_infra_mode(struct usbnet *usbdev, int mode); +static void restore_keys(struct usbnet *usbdev); +static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid, + bool *matched); + +static int rndis_start_bssid_list_scan(struct usbnet *usbdev) +{ + __le32 tmp; + + /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */ + tmp = cpu_to_le32(1); + return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp, + sizeof(tmp)); +} + +static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + int ret; + + ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID, + ssid, sizeof(*ssid)); + if (ret < 0) { + netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret); + return ret; + } + if (ret == 0) { + priv->radio_on = true; + netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__); + } + + return ret; +} + +static int set_bssid(struct usbnet *usbdev, const u8 *bssid) +{ + int ret; + + ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID, + bssid, ETH_ALEN); + if (ret < 0) { + netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n", + bssid, ret); + return ret; + } + + return ret; +} + +static int clear_bssid(struct usbnet *usbdev) +{ + static const u8 broadcast_mac[ETH_ALEN] = { + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + }; + + return set_bssid(usbdev, broadcast_mac); +} + +static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN]) +{ + int ret, len; + + len = ETH_ALEN; + ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID, + bssid, &len); + + if (ret != 0) + eth_zero_addr(bssid); + + return ret; +} + +static int get_association_info(struct usbnet *usbdev, + struct ndis_80211_assoc_info *info, int len) +{ + return rndis_query_oid(usbdev, + RNDIS_OID_802_11_ASSOCIATION_INFORMATION, + info, &len); +} + +static bool is_associated(struct usbnet *usbdev) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + u8 bssid[ETH_ALEN]; + int ret; + + if (!priv->radio_on) + return false; + + ret = get_bssid(usbdev, bssid); + + return (ret == 0 && !is_zero_ether_addr(bssid)); +} + +static int disassociate(struct usbnet *usbdev, bool reset_ssid) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct ndis_80211_ssid ssid; + int i, ret = 0; + + if (priv->radio_on) { + ret = rndis_set_oid(usbdev, + RNDIS_OID_802_11_DISASSOCIATE, + NULL, 0); + if (ret == 0) { + priv->radio_on = false; + netdev_dbg(usbdev->net, "%s(): radio_on = false\n", + __func__); + + if (reset_ssid) + msleep(100); + } + } + + /* disassociate causes radio to be turned off; if reset_ssid + * is given, set random ssid to enable radio */ + if (reset_ssid) { + /* Set device to infrastructure mode so we don't get ad-hoc + * 'media connect' indications with the random ssid. + */ + set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA); + + ssid.length = cpu_to_le32(sizeof(ssid.essid)); + get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2); + ssid.essid[0] = 0x1; + ssid.essid[1] = 0xff; + for (i = 2; i < sizeof(ssid.essid); i++) + ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff); + ret = set_essid(usbdev, &ssid); + } + return ret; +} + +static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version, + enum nl80211_auth_type auth_type, int keymgmt) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + __le32 tmp; + int auth_mode, ret; + + netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n", + __func__, wpa_version, auth_type, keymgmt); + + if (wpa_version & NL80211_WPA_VERSION_2) { + if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X) + auth_mode = NDIS_80211_AUTH_WPA2; + else + auth_mode = NDIS_80211_AUTH_WPA2_PSK; + } else if (wpa_version & NL80211_WPA_VERSION_1) { + if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X) + auth_mode = NDIS_80211_AUTH_WPA; + else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK) + auth_mode = NDIS_80211_AUTH_WPA_PSK; + else + auth_mode = NDIS_80211_AUTH_WPA_NONE; + } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY) + auth_mode = NDIS_80211_AUTH_SHARED; + else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM) + auth_mode = NDIS_80211_AUTH_OPEN; + else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC) + auth_mode = NDIS_80211_AUTH_AUTO_SWITCH; + else + return -ENOTSUPP; + + tmp = cpu_to_le32(auth_mode); + ret = rndis_set_oid(usbdev, + RNDIS_OID_802_11_AUTHENTICATION_MODE, + &tmp, sizeof(tmp)); + if (ret != 0) { + netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n", + ret); + return ret; + } + + priv->wpa_version = wpa_version; + + return 0; +} + +static int set_priv_filter(struct usbnet *usbdev) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + __le32 tmp; + + netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n", + __func__, priv->wpa_version); + + if (priv->wpa_version & NL80211_WPA_VERSION_2 || + priv->wpa_version & NL80211_WPA_VERSION_1) + tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP); + else + tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL); + + return rndis_set_oid(usbdev, + RNDIS_OID_802_11_PRIVACY_FILTER, &tmp, + sizeof(tmp)); +} + +static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise) +{ + __le32 tmp; + int encr_mode, ret; + + netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n", + __func__, pairwise, groupwise); + + if (pairwise & RNDIS_WLAN_ALG_CCMP) + encr_mode = NDIS_80211_ENCR_CCMP_ENABLED; + else if (pairwise & RNDIS_WLAN_ALG_TKIP) + encr_mode = NDIS_80211_ENCR_TKIP_ENABLED; + else if (pairwise & RNDIS_WLAN_ALG_WEP) + encr_mode = NDIS_80211_ENCR_WEP_ENABLED; + else if (groupwise & RNDIS_WLAN_ALG_CCMP) + encr_mode = NDIS_80211_ENCR_CCMP_ENABLED; + else if (groupwise & RNDIS_WLAN_ALG_TKIP) + encr_mode = NDIS_80211_ENCR_TKIP_ENABLED; + else + encr_mode = NDIS_80211_ENCR_DISABLED; + + tmp = cpu_to_le32(encr_mode); + ret = rndis_set_oid(usbdev, + RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp, + sizeof(tmp)); + if (ret != 0) { + netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n", + ret); + return ret; + } + + return 0; +} + +static int set_infra_mode(struct usbnet *usbdev, int mode) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + __le32 tmp; + int ret; + + netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n", + __func__, priv->infra_mode); + + tmp = cpu_to_le32(mode); + ret = rndis_set_oid(usbdev, + RNDIS_OID_802_11_INFRASTRUCTURE_MODE, + &tmp, sizeof(tmp)); + if (ret != 0) { + netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n", + ret); + return ret; + } + + /* NDIS drivers clear keys when infrastructure mode is + * changed. But Linux tools assume otherwise. So set the + * keys */ + restore_keys(usbdev); + + priv->infra_mode = mode; + return 0; +} + +static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold) +{ + __le32 tmp; + + netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold); + + if (rts_threshold < 0 || rts_threshold > 2347) + rts_threshold = 2347; + + tmp = cpu_to_le32(rts_threshold); + return rndis_set_oid(usbdev, + RNDIS_OID_802_11_RTS_THRESHOLD, + &tmp, sizeof(tmp)); +} + +static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold) +{ + __le32 tmp; + + netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold); + + if (frag_threshold < 256 || frag_threshold > 2346) + frag_threshold = 2346; + + tmp = cpu_to_le32(frag_threshold); + return rndis_set_oid(usbdev, + RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD, + &tmp, sizeof(tmp)); +} + +static void set_default_iw_params(struct usbnet *usbdev) +{ + set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA); + set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM, + RNDIS_WLAN_KEY_MGMT_NONE); + set_priv_filter(usbdev); + set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE); +} + +static int deauthenticate(struct usbnet *usbdev) +{ + int ret; + + ret = disassociate(usbdev, true); + set_default_iw_params(usbdev); + return ret; +} + +static int set_channel(struct usbnet *usbdev, int channel) +{ + struct ndis_80211_conf config; + unsigned int dsconfig; + int len, ret; + + netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel); + + /* this OID is valid only when not associated */ + if (is_associated(usbdev)) + return 0; + + dsconfig = 1000 * + ieee80211_channel_to_frequency(channel, IEEE80211_BAND_2GHZ); + + len = sizeof(config); + ret = rndis_query_oid(usbdev, + RNDIS_OID_802_11_CONFIGURATION, + &config, &len); + if (ret < 0) { + netdev_dbg(usbdev->net, "%s(): querying configuration failed\n", + __func__); + return ret; + } + + config.ds_config = cpu_to_le32(dsconfig); + ret = rndis_set_oid(usbdev, + RNDIS_OID_802_11_CONFIGURATION, + &config, sizeof(config)); + + netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret); + + return ret; +} + +static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev, + u32 *beacon_period) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct ieee80211_channel *channel; + struct ndis_80211_conf config; + int len, ret; + + /* Get channel and beacon interval */ + len = sizeof(config); + ret = rndis_query_oid(usbdev, + RNDIS_OID_802_11_CONFIGURATION, + &config, &len); + netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n", + __func__, ret); + if (ret < 0) + return NULL; + + channel = ieee80211_get_channel(priv->wdev.wiphy, + KHZ_TO_MHZ(le32_to_cpu(config.ds_config))); + if (!channel) + return NULL; + + if (beacon_period) + *beacon_period = le32_to_cpu(config.beacon_period); + return channel; +} + +/* index must be 0 - N, as per NDIS */ +static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len, + u8 index) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct ndis_80211_wep_key ndis_key; + u32 cipher; + int ret; + + netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n", + __func__, index, key_len); + + if (index >= RNDIS_WLAN_NUM_KEYS) + return -EINVAL; + + if (key_len == 5) + cipher = WLAN_CIPHER_SUITE_WEP40; + else if (key_len == 13) + cipher = WLAN_CIPHER_SUITE_WEP104; + else + return -EINVAL; + + memset(&ndis_key, 0, sizeof(ndis_key)); + + ndis_key.size = cpu_to_le32(sizeof(ndis_key)); + ndis_key.length = cpu_to_le32(key_len); + ndis_key.index = cpu_to_le32(index); + memcpy(&ndis_key.material, key, key_len); + + if (index == priv->encr_tx_key_index) { + ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY; + ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP, + RNDIS_WLAN_ALG_NONE); + if (ret) + netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n", + ret); + } + + ret = rndis_set_oid(usbdev, + RNDIS_OID_802_11_ADD_WEP, &ndis_key, + sizeof(ndis_key)); + if (ret != 0) { + netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n", + index + 1, ret); + return ret; + } + + priv->encr_keys[index].len = key_len; + priv->encr_keys[index].cipher = cipher; + memcpy(&priv->encr_keys[index].material, key, key_len); + eth_broadcast_addr(priv->encr_keys[index].bssid); + + return 0; +} + +static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len, + u8 index, const u8 *addr, const u8 *rx_seq, + int seq_len, u32 cipher, __le32 flags) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct ndis_80211_key ndis_key; + bool is_addr_ok; + int ret; + + if (index >= RNDIS_WLAN_NUM_KEYS) { + netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n", + __func__, index); + return -EINVAL; + } + if (key_len > sizeof(ndis_key.material) || key_len < 0) { + netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n", + __func__, key_len); + return -EINVAL; + } + if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) { + if (!rx_seq || seq_len <= 0) { + netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n", + __func__); + return -EINVAL; + } + if (rx_seq && seq_len > sizeof(ndis_key.rsc)) { + netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__); + return -EINVAL; + } + } + + is_addr_ok = addr && !is_zero_ether_addr(addr) && + !is_broadcast_ether_addr(addr); + if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) { + netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n", + __func__, addr); + return -EINVAL; + } + + netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n", + __func__, 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 (cipher == WLAN_CIPHER_SUITE_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, seq_len); + + if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) { + /* pairwise key */ + memcpy(ndis_key.bssid, addr, ETH_ALEN); + } else { + /* group key */ + if (priv->infra_mode == NDIS_80211_INFRA_ADHOC) + eth_broadcast_addr(ndis_key.bssid); + else + get_bssid(usbdev, ndis_key.bssid); + } + + ret = rndis_set_oid(usbdev, + RNDIS_OID_802_11_ADD_KEY, &ndis_key, + le32_to_cpu(ndis_key.size)); + netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n", + __func__, ret); + if (ret != 0) + return ret; + + memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index])); + priv->encr_keys[index].len = key_len; + priv->encr_keys[index].cipher = cipher; + memcpy(&priv->encr_keys[index].material, key, key_len); + if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) + memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN); + else + eth_broadcast_addr(priv->encr_keys[index].bssid); + + if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY) + priv->encr_tx_key_index = index; + + return 0; +} + +static int restore_key(struct usbnet *usbdev, u8 key_idx) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct rndis_wlan_encr_key key; + + if (is_wpa_key(priv, key_idx)) + return 0; + + key = priv->encr_keys[key_idx]; + + netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len); + + if (key.len == 0) + return 0; + + return add_wep_key(usbdev, key.material, key.len, key_idx); +} + +static void restore_keys(struct usbnet *usbdev) +{ + int i; + + for (i = 0; i < 4; i++) + restore_key(usbdev, i); +} + +static void clear_key(struct rndis_wlan_private *priv, u8 idx) +{ + memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx])); +} + +/* remove_key is for both wep and wpa */ +static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct ndis_80211_remove_key remove_key; + __le32 keyindex; + bool is_wpa; + int ret; + + if (index >= RNDIS_WLAN_NUM_KEYS) + return -ENOENT; + + if (priv->encr_keys[index].len == 0) + return 0; + + is_wpa = is_wpa_key(priv, index); + + netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n", + __func__, index, is_wpa ? "wpa" : "wep", + priv->encr_keys[index].len); + + clear_key(priv, index); + + if (is_wpa) { + remove_key.size = cpu_to_le32(sizeof(remove_key)); + remove_key.index = cpu_to_le32(index); + if (bssid) { + /* pairwise key */ + if (!is_broadcast_ether_addr(bssid)) + remove_key.index |= + NDIS_80211_ADDKEY_PAIRWISE_KEY; + memcpy(remove_key.bssid, bssid, + sizeof(remove_key.bssid)); + } else + memset(remove_key.bssid, 0xff, + sizeof(remove_key.bssid)); + + ret = rndis_set_oid(usbdev, + RNDIS_OID_802_11_REMOVE_KEY, + &remove_key, sizeof(remove_key)); + if (ret != 0) + return ret; + } else { + keyindex = cpu_to_le32(index); + ret = rndis_set_oid(usbdev, + RNDIS_OID_802_11_REMOVE_WEP, + &keyindex, sizeof(keyindex)); + if (ret != 0) { + netdev_warn(usbdev->net, + "removing encryption key %d failed (%08X)\n", + index, ret); + return ret; + } + } + + /* if it is transmit key, disable encryption */ + if (index == priv->encr_tx_key_index) + set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE); + + return 0; +} + +static void set_multicast_list(struct usbnet *usbdev) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct netdev_hw_addr *ha; + __le32 filter, basefilter; + int ret; + char *mc_addrs = NULL; + int mc_count; + + basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | + RNDIS_PACKET_TYPE_BROADCAST); + + if (usbdev->net->flags & IFF_PROMISC) { + filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS | + RNDIS_PACKET_TYPE_ALL_LOCAL); + } else if (usbdev->net->flags & IFF_ALLMULTI) { + filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST); + } + + if (filter != basefilter) + goto set_filter; + + /* + * mc_list should be accessed holding the lock, so copy addresses to + * local buffer first. + */ + netif_addr_lock_bh(usbdev->net); + mc_count = netdev_mc_count(usbdev->net); + if (mc_count > priv->multicast_size) { + filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST); + } else if (mc_count) { + int i = 0; + + mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC); + if (!mc_addrs) { + netif_addr_unlock_bh(usbdev->net); + return; + } + + netdev_for_each_mc_addr(ha, usbdev->net) + memcpy(mc_addrs + i++ * ETH_ALEN, + ha->addr, ETH_ALEN); + } + netif_addr_unlock_bh(usbdev->net); + + if (filter != basefilter) + goto set_filter; + + if (mc_count) { + ret = rndis_set_oid(usbdev, + RNDIS_OID_802_3_MULTICAST_LIST, + mc_addrs, mc_count * ETH_ALEN); + kfree(mc_addrs); + if (ret == 0) + filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST); + else + filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST); + + netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n", + mc_count, priv->multicast_size, ret); + } + +set_filter: + ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter, + sizeof(filter)); + if (ret < 0) { + netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n", + le32_to_cpu(filter)); + } + + netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n", + le32_to_cpu(filter), ret); +} + +#ifdef DEBUG +static void debug_print_pmkids(struct usbnet *usbdev, + struct ndis_80211_pmkid *pmkids, + const char *func_str) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + int i, len, count, max_pmkids, entry_len; + + max_pmkids = priv->wdev.wiphy->max_num_pmkids; + len = le32_to_cpu(pmkids->length); + count = le32_to_cpu(pmkids->bssid_info_count); + + entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1; + + netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: " + "%d)\n", func_str, count, len, entry_len); + + if (count > max_pmkids) + count = max_pmkids; + + for (i = 0; i < count; i++) { + u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid; + + netdev_dbg(usbdev->net, "%s(): bssid: %pM, " + "pmkid: %08X:%08X:%08X:%08X\n", + func_str, pmkids->bssid_info[i].bssid, + cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]), + cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3])); + } +} +#else +static void debug_print_pmkids(struct usbnet *usbdev, + struct ndis_80211_pmkid *pmkids, + const char *func_str) +{ + return; +} +#endif + +static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct ndis_80211_pmkid *pmkids; + int len, ret, max_pmkids; + + max_pmkids = priv->wdev.wiphy->max_num_pmkids; + len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]); + + pmkids = kzalloc(len, GFP_KERNEL); + if (!pmkids) + return ERR_PTR(-ENOMEM); + + pmkids->length = cpu_to_le32(len); + pmkids->bssid_info_count = cpu_to_le32(max_pmkids); + + ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID, + pmkids, &len); + if (ret < 0) { + netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)" + " -> %d\n", __func__, len, max_pmkids, ret); + + kfree(pmkids); + return ERR_PTR(ret); + } + + if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids) + pmkids->bssid_info_count = cpu_to_le32(max_pmkids); + + debug_print_pmkids(usbdev, pmkids, __func__); + + return pmkids; +} + +static int set_device_pmkids(struct usbnet *usbdev, + struct ndis_80211_pmkid *pmkids) +{ + int ret, len, num_pmkids; + + num_pmkids = le32_to_cpu(pmkids->bssid_info_count); + len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]); + pmkids->length = cpu_to_le32(len); + + debug_print_pmkids(usbdev, pmkids, __func__); + + ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids, + le32_to_cpu(pmkids->length)); + if (ret < 0) { + netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d" + "\n", __func__, len, num_pmkids, ret); + } + + kfree(pmkids); + return ret; +} + +static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev, + struct ndis_80211_pmkid *pmkids, + struct cfg80211_pmksa *pmksa, + int max_pmkids) +{ + int i, newlen, err; + unsigned int count; + + count = le32_to_cpu(pmkids->bssid_info_count); + + if (count > max_pmkids) + count = max_pmkids; + + for (i = 0; i < count; i++) + if (ether_addr_equal(pmkids->bssid_info[i].bssid, + pmksa->bssid)) + break; + + /* pmkid not found */ + if (i == count) { + netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n", + __func__, pmksa->bssid); + err = -ENOENT; + goto error; + } + + for (; i + 1 < count; i++) + pmkids->bssid_info[i] = pmkids->bssid_info[i + 1]; + + count--; + newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]); + + pmkids->length = cpu_to_le32(newlen); + pmkids->bssid_info_count = cpu_to_le32(count); + + return pmkids; +error: + kfree(pmkids); + return ERR_PTR(err); +} + +static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev, + struct ndis_80211_pmkid *pmkids, + struct cfg80211_pmksa *pmksa, + int max_pmkids) +{ + struct ndis_80211_pmkid *new_pmkids; + int i, err, newlen; + unsigned int count; + + count = le32_to_cpu(pmkids->bssid_info_count); + + if (count > max_pmkids) + count = max_pmkids; + + /* update with new pmkid */ + for (i = 0; i < count; i++) { + if (!ether_addr_equal(pmkids->bssid_info[i].bssid, + pmksa->bssid)) + continue; + + memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid, + WLAN_PMKID_LEN); + + return pmkids; + } + + /* out of space, return error */ + if (i == max_pmkids) { + netdev_dbg(usbdev->net, "%s(): out of space\n", __func__); + err = -ENOSPC; + goto error; + } + + /* add new pmkid */ + newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]); + + new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL); + if (!new_pmkids) { + err = -ENOMEM; + goto error; + } + pmkids = new_pmkids; + + pmkids->length = cpu_to_le32(newlen); + pmkids->bssid_info_count = cpu_to_le32(count + 1); + + memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN); + memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN); + + return pmkids; +error: + kfree(pmkids); + return ERR_PTR(err); +} + +/* + * cfg80211 ops + */ +static int rndis_change_virtual_intf(struct wiphy *wiphy, + struct net_device *dev, + enum nl80211_iftype type, u32 *flags, + struct vif_params *params) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + int mode; + + switch (type) { + case NL80211_IFTYPE_ADHOC: + mode = NDIS_80211_INFRA_ADHOC; + break; + case NL80211_IFTYPE_STATION: + mode = NDIS_80211_INFRA_INFRA; + break; + default: + return -EINVAL; + } + + priv->wdev.iftype = type; + + return set_infra_mode(usbdev, mode); +} + +static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + int err; + + if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { + err = set_frag_threshold(usbdev, wiphy->frag_threshold); + if (err < 0) + return err; + } + + if (changed & WIPHY_PARAM_RTS_THRESHOLD) { + err = set_rts_threshold(usbdev, wiphy->rts_threshold); + if (err < 0) + return err; + } + + return 0; +} + +static int rndis_set_tx_power(struct wiphy *wiphy, + struct wireless_dev *wdev, + enum nl80211_tx_power_setting type, + int mbm) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + + netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n", + __func__, type, mbm); + + if (mbm < 0 || (mbm % 100)) + return -ENOTSUPP; + + /* Device doesn't support changing txpower after initialization, only + * turn off/on radio. Support 'auto' mode and setting same dBm that is + * currently used. + */ + if (type == NL80211_TX_POWER_AUTOMATIC || + MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) { + if (!priv->radio_on) + disassociate(usbdev, true); /* turn on radio */ + + return 0; + } + + return -ENOTSUPP; +} + +static int rndis_get_tx_power(struct wiphy *wiphy, + struct wireless_dev *wdev, + int *dbm) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + + *dbm = get_bcm4320_power_dbm(priv); + + netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm); + + return 0; +} + +#define SCAN_DELAY_JIFFIES (6 * HZ) +static int rndis_scan(struct wiphy *wiphy, + struct cfg80211_scan_request *request) +{ + struct net_device *dev = request->wdev->netdev; + struct usbnet *usbdev = netdev_priv(dev); + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + int ret; + int delay = SCAN_DELAY_JIFFIES; + + netdev_dbg(usbdev->net, "cfg80211.scan\n"); + + /* Get current bssid list from device before new scan, as new scan + * clears internal bssid list. + */ + rndis_check_bssid_list(usbdev, NULL, NULL); + + if (priv->scan_request && priv->scan_request != request) + return -EBUSY; + + priv->scan_request = request; + + ret = rndis_start_bssid_list_scan(usbdev); + if (ret == 0) { + if (priv->device_type == RNDIS_BCM4320A) + delay = HZ; + + /* Wait before retrieving scan results from device */ + queue_delayed_work(priv->workqueue, &priv->scan_work, delay); + } + + return ret; +} + +static bool rndis_bss_info_update(struct usbnet *usbdev, + struct ndis_80211_bssid_ex *bssid) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct ieee80211_channel *channel; + struct cfg80211_bss *bss; + s32 signal; + u64 timestamp; + u16 capability; + u16 beacon_interval; + struct ndis_80211_fixed_ies *fixed; + int ie_len, bssid_len; + u8 *ie; + + netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n", + bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length)); + + /* parse bssid structure */ + bssid_len = le32_to_cpu(bssid->length); + + if (bssid_len < sizeof(struct ndis_80211_bssid_ex) + + sizeof(struct ndis_80211_fixed_ies)) + return NULL; + + fixed = (struct ndis_80211_fixed_ies *)bssid->ies; + + ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies)); + ie_len = min(bssid_len - (int)sizeof(*bssid), + (int)le32_to_cpu(bssid->ie_length)); + ie_len -= sizeof(struct ndis_80211_fixed_ies); + if (ie_len < 0) + return NULL; + + /* extract data for cfg80211_inform_bss */ + channel = ieee80211_get_channel(priv->wdev.wiphy, + KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config))); + if (!channel) + return NULL; + + signal = level_to_qual(le32_to_cpu(bssid->rssi)); + timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp); + capability = le16_to_cpu(fixed->capabilities); + beacon_interval = le16_to_cpu(fixed->beacon_interval); + + bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, + CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac, + timestamp, capability, beacon_interval, + ie, ie_len, signal, GFP_KERNEL); + cfg80211_put_bss(priv->wdev.wiphy, bss); + + return (bss != NULL); +} + +static struct ndis_80211_bssid_ex *next_bssid_list_item( + struct ndis_80211_bssid_ex *bssid, + int *bssid_len, void *buf, int len) +{ + void *buf_end, *bssid_end; + + buf_end = (char *)buf + len; + bssid_end = (char *)bssid + *bssid_len; + + if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) { + *bssid_len = 0; + return NULL; + } else { + bssid = (void *)((char *)bssid + *bssid_len); + *bssid_len = le32_to_cpu(bssid->length); + return bssid; + } +} + +static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid, + int bssid_len, void *buf, int len) +{ + void *buf_end, *bssid_end; + + if (!bssid || bssid_len <= 0 || bssid_len > len) + return false; + + buf_end = (char *)buf + len; + bssid_end = (char *)bssid + bssid_len; + + return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0; +} + +static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid, + bool *matched) +{ + void *buf = NULL; + struct ndis_80211_bssid_list_ex *bssid_list; + struct ndis_80211_bssid_ex *bssid; + int ret = -EINVAL, len, count, bssid_len, real_count, new_len; + + netdev_dbg(usbdev->net, "%s()\n", __func__); + + len = CONTROL_BUFFER_SIZE; +resize_buf: + buf = kzalloc(len, GFP_KERNEL); + if (!buf) { + ret = -ENOMEM; + goto out; + } + + /* BSSID-list might have got bigger last time we checked, keep + * resizing until it won't get any bigger. + */ + new_len = len; + ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST, + buf, &new_len); + if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex)) + goto out; + + if (new_len > len) { + len = new_len; + kfree(buf); + goto resize_buf; + } + + len = new_len; + + bssid_list = buf; + count = le32_to_cpu(bssid_list->num_items); + real_count = 0; + netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len); + + bssid_len = 0; + bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len); + + /* Device returns incorrect 'num_items'. Workaround by ignoring the + * received 'num_items' and walking through full bssid buffer instead. + */ + while (check_bssid_list_item(bssid, bssid_len, buf, len)) { + if (rndis_bss_info_update(usbdev, bssid) && match_bssid && + matched) { + if (ether_addr_equal(bssid->mac, match_bssid)) + *matched = true; + } + + real_count++; + bssid = next_bssid_list_item(bssid, &bssid_len, buf, len); + } + + netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:" + " %d\n", __func__, count, real_count); + +out: + kfree(buf); + return ret; +} + +static void rndis_get_scan_results(struct work_struct *work) +{ + struct rndis_wlan_private *priv = + container_of(work, struct rndis_wlan_private, scan_work.work); + struct usbnet *usbdev = priv->usbdev; + int ret; + + netdev_dbg(usbdev->net, "get_scan_results\n"); + + if (!priv->scan_request) + return; + + ret = rndis_check_bssid_list(usbdev, NULL, NULL); + + cfg80211_scan_done(priv->scan_request, ret < 0); + + priv->scan_request = NULL; +} + +static int rndis_connect(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_connect_params *sme) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + struct ieee80211_channel *channel = sme->channel; + struct ndis_80211_ssid ssid; + int pairwise = RNDIS_WLAN_ALG_NONE; + int groupwise = RNDIS_WLAN_ALG_NONE; + int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE; + int length, i, ret, chan = -1; + + if (channel) + chan = ieee80211_frequency_to_channel(channel->center_freq); + + groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group); + for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++) + pairwise |= + rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]); + + if (sme->crypto.n_ciphers_pairwise > 0 && + pairwise == RNDIS_WLAN_ALG_NONE) { + netdev_err(usbdev->net, "Unsupported pairwise cipher\n"); + return -ENOTSUPP; + } + + for (i = 0; i < sme->crypto.n_akm_suites; i++) + keymgmt |= + rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]); + + if (sme->crypto.n_akm_suites > 0 && + keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) { + netdev_err(usbdev->net, "Invalid keymgmt\n"); + return -ENOTSUPP; + } + + netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n", + sme->ssid, sme->bssid, chan, + sme->privacy, sme->crypto.wpa_versions, sme->auth_type, + groupwise, pairwise, keymgmt); + + if (is_associated(usbdev)) + disassociate(usbdev, false); + + ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA); + if (ret < 0) { + netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n", + ret); + goto err_turn_radio_on; + } + + ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type, + keymgmt); + if (ret < 0) { + netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n", + ret); + goto err_turn_radio_on; + } + + set_priv_filter(usbdev); + + ret = set_encr_mode(usbdev, pairwise, groupwise); + if (ret < 0) { + netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n", + ret); + goto err_turn_radio_on; + } + + if (channel) { + ret = set_channel(usbdev, chan); + if (ret < 0) { + netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n", + ret); + goto err_turn_radio_on; + } + } + + if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) { + priv->encr_tx_key_index = sme->key_idx; + ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx); + if (ret < 0) { + netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n", + ret, sme->key_len, sme->key_idx); + goto err_turn_radio_on; + } + } + + if (sme->bssid && !is_zero_ether_addr(sme->bssid) && + !is_broadcast_ether_addr(sme->bssid)) { + ret = set_bssid(usbdev, sme->bssid); + if (ret < 0) { + netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n", + ret); + goto err_turn_radio_on; + } + } else + clear_bssid(usbdev); + + length = sme->ssid_len; + if (length > NDIS_802_11_LENGTH_SSID) + length = NDIS_802_11_LENGTH_SSID; + + memset(&ssid, 0, sizeof(ssid)); + ssid.length = cpu_to_le32(length); + memcpy(ssid.essid, sme->ssid, length); + + /* Pause and purge rx queue, so we don't pass packets before + * 'media connect'-indication. + */ + usbnet_pause_rx(usbdev); + usbnet_purge_paused_rxq(usbdev); + + ret = set_essid(usbdev, &ssid); + if (ret < 0) + netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret); + return ret; + +err_turn_radio_on: + disassociate(usbdev, true); + + return ret; +} + +static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev, + u16 reason_code) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + + netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code); + + priv->connected = false; + eth_zero_addr(priv->bssid); + + return deauthenticate(usbdev); +} + +static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_ibss_params *params) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + struct ieee80211_channel *channel = params->chandef.chan; + struct ndis_80211_ssid ssid; + enum nl80211_auth_type auth_type; + int ret, alg, length, chan = -1; + + if (channel) + chan = ieee80211_frequency_to_channel(channel->center_freq); + + /* TODO: How to handle ad-hoc encryption? + * connect() has *key, join_ibss() doesn't. RNDIS requires key to be + * pre-shared for encryption (open/shared/wpa), is key set before + * join_ibss? Which auth_type to use (not in params)? What about WPA? + */ + if (params->privacy) { + auth_type = NL80211_AUTHTYPE_SHARED_KEY; + alg = RNDIS_WLAN_ALG_WEP; + } else { + auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM; + alg = RNDIS_WLAN_ALG_NONE; + } + + netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n", + params->ssid, params->bssid, chan, params->privacy); + + if (is_associated(usbdev)) + disassociate(usbdev, false); + + ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC); + if (ret < 0) { + netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n", + ret); + goto err_turn_radio_on; + } + + ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE); + if (ret < 0) { + netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n", + ret); + goto err_turn_radio_on; + } + + set_priv_filter(usbdev); + + ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE); + if (ret < 0) { + netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n", + ret); + goto err_turn_radio_on; + } + + if (channel) { + ret = set_channel(usbdev, chan); + if (ret < 0) { + netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n", + ret); + goto err_turn_radio_on; + } + } + + if (params->bssid && !is_zero_ether_addr(params->bssid) && + !is_broadcast_ether_addr(params->bssid)) { + ret = set_bssid(usbdev, params->bssid); + if (ret < 0) { + netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n", + ret); + goto err_turn_radio_on; + } + } else + clear_bssid(usbdev); + + length = params->ssid_len; + if (length > NDIS_802_11_LENGTH_SSID) + length = NDIS_802_11_LENGTH_SSID; + + memset(&ssid, 0, sizeof(ssid)); + ssid.length = cpu_to_le32(length); + memcpy(ssid.essid, params->ssid, length); + + /* Don't need to pause rx queue for ad-hoc. */ + usbnet_purge_paused_rxq(usbdev); + usbnet_resume_rx(usbdev); + + ret = set_essid(usbdev, &ssid); + if (ret < 0) + netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n", + ret); + return ret; + +err_turn_radio_on: + disassociate(usbdev, true); + + return ret; +} + +static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + + netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n"); + + priv->connected = false; + eth_zero_addr(priv->bssid); + + return deauthenticate(usbdev); +} + +static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev, + u8 key_index, bool pairwise, const u8 *mac_addr, + struct key_params *params) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + __le32 flags; + + netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n", + __func__, key_index, mac_addr, params->cipher); + + switch (params->cipher) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + return add_wep_key(usbdev, params->key, params->key_len, + key_index); + case WLAN_CIPHER_SUITE_TKIP: + case WLAN_CIPHER_SUITE_CCMP: + flags = 0; + + if (params->seq && params->seq_len > 0) + flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ; + if (mac_addr) + flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY | + NDIS_80211_ADDKEY_TRANSMIT_KEY; + + return add_wpa_key(usbdev, params->key, params->key_len, + key_index, mac_addr, params->seq, + params->seq_len, params->cipher, flags); + default: + netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n", + __func__, params->cipher); + return -ENOTSUPP; + } +} + +static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev, + u8 key_index, bool pairwise, const u8 *mac_addr) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + + netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr); + + return remove_key(usbdev, key_index, mac_addr); +} + +static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev, + u8 key_index, bool unicast, bool multicast) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + struct rndis_wlan_encr_key key; + + netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index); + + if (key_index >= RNDIS_WLAN_NUM_KEYS) + return -ENOENT; + + priv->encr_tx_key_index = key_index; + + if (is_wpa_key(priv, key_index)) + return 0; + + key = priv->encr_keys[key_index]; + + return add_wep_key(usbdev, key.material, key.len, key_index); +} + +static void rndis_fill_station_info(struct usbnet *usbdev, + struct station_info *sinfo) +{ + __le32 linkspeed, rssi; + int ret, len; + + memset(sinfo, 0, sizeof(*sinfo)); + + len = sizeof(linkspeed); + ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len); + if (ret == 0) { + sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000; + sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE); + } + + len = sizeof(rssi); + ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI, + &rssi, &len); + if (ret == 0) { + sinfo->signal = level_to_qual(le32_to_cpu(rssi)); + sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL); + } +} + +static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev, + const u8 *mac, struct station_info *sinfo) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + + if (!ether_addr_equal(priv->bssid, mac)) + return -ENOENT; + + rndis_fill_station_info(usbdev, sinfo); + + return 0; +} + +static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev, + int idx, u8 *mac, struct station_info *sinfo) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + + if (idx != 0) + return -ENOENT; + + memcpy(mac, priv->bssid, ETH_ALEN); + + rndis_fill_station_info(usbdev, sinfo); + + return 0; +} + +static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev, + struct cfg80211_pmksa *pmksa) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + struct ndis_80211_pmkid *pmkids; + u32 *tmp = (u32 *)pmksa->pmkid; + + netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__, + pmksa->bssid, + cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]), + cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3])); + + pmkids = get_device_pmkids(usbdev); + if (IS_ERR(pmkids)) { + /* couldn't read PMKID cache from device */ + return PTR_ERR(pmkids); + } + + pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids); + if (IS_ERR(pmkids)) { + /* not found, list full, etc */ + return PTR_ERR(pmkids); + } + + return set_device_pmkids(usbdev, pmkids); +} + +static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev, + struct cfg80211_pmksa *pmksa) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + struct ndis_80211_pmkid *pmkids; + u32 *tmp = (u32 *)pmksa->pmkid; + + netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__, + pmksa->bssid, + cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]), + cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3])); + + pmkids = get_device_pmkids(usbdev); + if (IS_ERR(pmkids)) { + /* Couldn't read PMKID cache from device */ + return PTR_ERR(pmkids); + } + + pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids); + if (IS_ERR(pmkids)) { + /* not found, etc */ + return PTR_ERR(pmkids); + } + + return set_device_pmkids(usbdev, pmkids); +} + +static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + struct ndis_80211_pmkid pmkid; + + netdev_dbg(usbdev->net, "%s()\n", __func__); + + memset(&pmkid, 0, sizeof(pmkid)); + + pmkid.length = cpu_to_le32(sizeof(pmkid)); + pmkid.bssid_info_count = cpu_to_le32(0); + + return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, + &pmkid, sizeof(pmkid)); +} + +static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, + bool enabled, int timeout) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + struct usbnet *usbdev = priv->usbdev; + int power_mode; + __le32 mode; + int ret; + + if (priv->device_type != RNDIS_BCM4320B) + return -ENOTSUPP; + + netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__, + enabled ? "enabled" : "disabled", + timeout); + + if (enabled) + power_mode = NDIS_80211_POWER_MODE_FAST_PSP; + else + power_mode = NDIS_80211_POWER_MODE_CAM; + + if (power_mode == priv->power_mode) + return 0; + + priv->power_mode = power_mode; + + mode = cpu_to_le32(power_mode); + ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE, + &mode, sizeof(mode)); + + netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n", + __func__, ret); + + return ret; +} + +static int rndis_set_cqm_rssi_config(struct wiphy *wiphy, + struct net_device *dev, + s32 rssi_thold, u32 rssi_hyst) +{ + struct rndis_wlan_private *priv = wiphy_priv(wiphy); + + priv->cqm_rssi_thold = rssi_thold; + priv->cqm_rssi_hyst = rssi_hyst; + priv->last_cqm_event_rssi = 0; + + return 0; +} + +static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid, + struct ndis_80211_assoc_info *info) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct ieee80211_channel *channel; + struct ndis_80211_ssid ssid; + struct cfg80211_bss *bss; + s32 signal; + u64 timestamp; + u16 capability; + u32 beacon_period = 0; + __le32 rssi; + u8 ie_buf[34]; + int len, ret, ie_len; + + /* Get signal quality, in case of error use rssi=0 and ignore error. */ + len = sizeof(rssi); + rssi = 0; + ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI, + &rssi, &len); + signal = level_to_qual(le32_to_cpu(rssi)); + + netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, " + "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi), + level_to_qual(le32_to_cpu(rssi))); + + /* Get AP capabilities */ + if (info) { + capability = le16_to_cpu(info->resp_ie.capa); + } else { + /* Set atleast ESS/IBSS capability */ + capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ? + WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS; + } + + /* Get channel and beacon interval */ + channel = get_current_channel(usbdev, &beacon_period); + if (!channel) { + netdev_warn(usbdev->net, "%s(): could not get channel.\n", + __func__); + return; + } + + /* Get SSID, in case of error, use zero length SSID and ignore error. */ + len = sizeof(ssid); + memset(&ssid, 0, sizeof(ssid)); + ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID, + &ssid, &len); + netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: " + "'%.32s'\n", __func__, ret, + le32_to_cpu(ssid.length), ssid.essid); + + if (le32_to_cpu(ssid.length) > 32) + ssid.length = cpu_to_le32(32); + + ie_buf[0] = WLAN_EID_SSID; + ie_buf[1] = le32_to_cpu(ssid.length); + memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length)); + + ie_len = le32_to_cpu(ssid.length) + 2; + + /* no tsf */ + timestamp = 0; + + netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, " + "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), " + "signal:%d\n", __func__, (channel ? channel->center_freq : -1), + bssid, (u32)timestamp, capability, beacon_period, ie_len, + ssid.essid, signal); + + bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, + CFG80211_BSS_FTYPE_UNKNOWN, bssid, + timestamp, capability, beacon_period, + ie_buf, ie_len, signal, GFP_KERNEL); + cfg80211_put_bss(priv->wdev.wiphy, bss); +} + +/* + * workers, indication handlers, device poller + */ +static void rndis_wlan_do_link_up_work(struct usbnet *usbdev) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct ndis_80211_assoc_info *info = NULL; + u8 bssid[ETH_ALEN]; + unsigned int resp_ie_len, req_ie_len; + unsigned int offset; + u8 *req_ie, *resp_ie; + int ret; + bool roamed = false; + bool match_bss; + + if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) { + /* received media connect indication while connected, either + * device reassociated with same AP or roamed to new. */ + roamed = true; + } + + req_ie_len = 0; + resp_ie_len = 0; + req_ie = NULL; + resp_ie = NULL; + + if (priv->infra_mode == NDIS_80211_INFRA_INFRA) { + info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL); + if (!info) { + /* No memory? Try resume work later */ + set_bit(WORK_LINK_UP, &priv->work_pending); + queue_work(priv->workqueue, &priv->work); + return; + } + + /* Get association info IEs from device. */ + ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE); + if (!ret) { + req_ie_len = le32_to_cpu(info->req_ie_length); + if (req_ie_len > CONTROL_BUFFER_SIZE) + req_ie_len = CONTROL_BUFFER_SIZE; + if (req_ie_len != 0) { + offset = le32_to_cpu(info->offset_req_ies); + + if (offset > CONTROL_BUFFER_SIZE) + offset = CONTROL_BUFFER_SIZE; + + req_ie = (u8 *)info + offset; + + if (offset + req_ie_len > CONTROL_BUFFER_SIZE) + req_ie_len = + CONTROL_BUFFER_SIZE - offset; + } + + resp_ie_len = le32_to_cpu(info->resp_ie_length); + if (resp_ie_len > CONTROL_BUFFER_SIZE) + resp_ie_len = CONTROL_BUFFER_SIZE; + if (resp_ie_len != 0) { + offset = le32_to_cpu(info->offset_resp_ies); + + if (offset > CONTROL_BUFFER_SIZE) + offset = CONTROL_BUFFER_SIZE; + + resp_ie = (u8 *)info + offset; + + if (offset + resp_ie_len > CONTROL_BUFFER_SIZE) + resp_ie_len = + CONTROL_BUFFER_SIZE - offset; + } + } else { + /* Since rndis_wlan_craft_connected_bss() might use info + * later and expects info to contain valid data if + * non-null, free info and set NULL here. + */ + kfree(info); + info = NULL; + } + } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC)) + return; + + ret = get_bssid(usbdev, bssid); + if (ret < 0) + memset(bssid, 0, sizeof(bssid)); + + netdev_dbg(usbdev->net, "link up work: [%pM]%s\n", + bssid, roamed ? " roamed" : ""); + + /* Internal bss list in device should contain at least the currently + * connected bss and we can get it to cfg80211 with + * rndis_check_bssid_list(). + * + * NDIS spec says: "If the device is associated, but the associated + * BSSID is not in its BSSID scan list, then the driver must add an + * entry for the BSSID at the end of the data that it returns in + * response to query of RNDIS_OID_802_11_BSSID_LIST." + * + * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a. + */ + match_bss = false; + rndis_check_bssid_list(usbdev, bssid, &match_bss); + + if (!is_zero_ether_addr(bssid) && !match_bss) { + /* Couldn't get bss from device, we need to manually craft bss + * for cfg80211. + */ + rndis_wlan_craft_connected_bss(usbdev, bssid, info); + } + + if (priv->infra_mode == NDIS_80211_INFRA_INFRA) { + if (!roamed) + cfg80211_connect_result(usbdev->net, bssid, req_ie, + req_ie_len, resp_ie, + resp_ie_len, 0, GFP_KERNEL); + else + cfg80211_roamed(usbdev->net, + get_current_channel(usbdev, NULL), + bssid, req_ie, req_ie_len, + resp_ie, resp_ie_len, GFP_KERNEL); + } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC) + cfg80211_ibss_joined(usbdev->net, bssid, + get_current_channel(usbdev, NULL), + GFP_KERNEL); + + kfree(info); + + priv->connected = true; + memcpy(priv->bssid, bssid, ETH_ALEN); + + usbnet_resume_rx(usbdev); + netif_carrier_on(usbdev->net); +} + +static void rndis_wlan_do_link_down_work(struct usbnet *usbdev) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + + if (priv->connected) { + priv->connected = false; + eth_zero_addr(priv->bssid); + + deauthenticate(usbdev); + + cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL); + } + + netif_carrier_off(usbdev->net); +} + +static void rndis_wlan_worker(struct work_struct *work) +{ + struct rndis_wlan_private *priv = + container_of(work, struct rndis_wlan_private, work); + struct usbnet *usbdev = priv->usbdev; + + if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending)) + rndis_wlan_do_link_up_work(usbdev); + + if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending)) + rndis_wlan_do_link_down_work(usbdev); + + if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending)) + set_multicast_list(usbdev); +} + +static void rndis_wlan_set_multicast_list(struct net_device *dev) +{ + struct usbnet *usbdev = netdev_priv(dev); + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + + if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending)) + return; + + set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending); + queue_work(priv->workqueue, &priv->work); +} + +static void rndis_wlan_auth_indication(struct usbnet *usbdev, + struct ndis_80211_status_indication *indication, + int len) +{ + u8 *buf; + const char *type; + int flags, buflen, key_id; + bool pairwise_error, group_error; + struct ndis_80211_auth_request *auth_req; + enum nl80211_key_type key_type; + + /* must have at least one array entry */ + if (len < offsetof(struct ndis_80211_status_indication, u) + + sizeof(struct ndis_80211_auth_request)) { + netdev_info(usbdev->net, "authentication indication: too short message (%i)\n", + len); + return; + } + + buf = (void *)&indication->u.auth_request[0]; + buflen = len - offsetof(struct ndis_80211_status_indication, u); + + while (buflen >= sizeof(*auth_req)) { + auth_req = (void *)buf; + type = "unknown"; + flags = le32_to_cpu(auth_req->flags); + pairwise_error = false; + group_error = false; + + if (flags & 0x1) + type = "reauth request"; + if (flags & 0x2) + type = "key update request"; + if (flags & 0x6) { + pairwise_error = true; + type = "pairwise_error"; + } + if (flags & 0xe) { + group_error = true; + type = "group_error"; + } + + netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n", + type, le32_to_cpu(auth_req->flags)); + + if (pairwise_error) { + key_type = NL80211_KEYTYPE_PAIRWISE; + key_id = -1; + + cfg80211_michael_mic_failure(usbdev->net, + auth_req->bssid, + key_type, key_id, NULL, + GFP_KERNEL); + } + + if (group_error) { + key_type = NL80211_KEYTYPE_GROUP; + key_id = -1; + + cfg80211_michael_mic_failure(usbdev->net, + auth_req->bssid, + key_type, key_id, NULL, + GFP_KERNEL); + } + + buflen -= le32_to_cpu(auth_req->length); + buf += le32_to_cpu(auth_req->length); + } +} + +static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev, + struct ndis_80211_status_indication *indication, + int len) +{ + struct ndis_80211_pmkid_cand_list *cand_list; + int list_len, expected_len, i; + + if (len < offsetof(struct ndis_80211_status_indication, u) + + sizeof(struct ndis_80211_pmkid_cand_list)) { + netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n", + len); + return; + } + + list_len = le32_to_cpu(indication->u.cand_list.num_candidates) * + sizeof(struct ndis_80211_pmkid_candidate); + expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len + + offsetof(struct ndis_80211_status_indication, u); + + if (len < expected_len) { + netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n", + len, expected_len); + return; + } + + cand_list = &indication->u.cand_list; + + netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n", + le32_to_cpu(cand_list->version), + le32_to_cpu(cand_list->num_candidates)); + + if (le32_to_cpu(cand_list->version) != 1) + return; + + for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) { + struct ndis_80211_pmkid_candidate *cand = + &cand_list->candidate_list[i]; + bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH); + + netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n", + i, le32_to_cpu(cand->flags), preauth, cand->bssid); + + cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid, + preauth, GFP_ATOMIC); + } +} + +static void rndis_wlan_media_specific_indication(struct usbnet *usbdev, + struct rndis_indicate *msg, int buflen) +{ + struct ndis_80211_status_indication *indication; + unsigned int len, offset; + + offset = offsetof(struct rndis_indicate, status) + + le32_to_cpu(msg->offset); + len = le32_to_cpu(msg->length); + + if (len < 8) { + netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n", + len); + return; + } + + if (len > buflen || offset > buflen || offset + len > buflen) { + netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n", + offset + len, buflen); + return; + } + + indication = (void *)((u8 *)msg + offset); + + switch (le32_to_cpu(indication->status_type)) { + case NDIS_80211_STATUSTYPE_RADIOSTATE: + netdev_info(usbdev->net, "radio state indication: %i\n", + le32_to_cpu(indication->u.radio_status)); + return; + + case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE: + netdev_info(usbdev->net, "media stream mode indication: %i\n", + le32_to_cpu(indication->u.media_stream_mode)); + return; + + case NDIS_80211_STATUSTYPE_AUTHENTICATION: + rndis_wlan_auth_indication(usbdev, indication, len); + return; + + case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST: + rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len); + return; + + default: + netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n", + le32_to_cpu(indication->status_type)); + } +} + +static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + struct rndis_indicate *msg = ind; + + switch (le32_to_cpu(msg->status)) { + case RNDIS_STATUS_MEDIA_CONNECT: + if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) { + /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra + * "media connect" indications which confuses driver + * and userspace to think that device is + * roaming/reassociating when it isn't. + */ + netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n"); + return; + } + + usbnet_pause_rx(usbdev); + + netdev_info(usbdev->net, "media connect\n"); + + /* queue work to avoid recursive calls into rndis_command */ + set_bit(WORK_LINK_UP, &priv->work_pending); + queue_work(priv->workqueue, &priv->work); + break; + + case RNDIS_STATUS_MEDIA_DISCONNECT: + netdev_info(usbdev->net, "media disconnect\n"); + + /* queue work to avoid recursive calls into rndis_command */ + set_bit(WORK_LINK_DOWN, &priv->work_pending); + queue_work(priv->workqueue, &priv->work); + break; + + case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION: + rndis_wlan_media_specific_indication(usbdev, msg, buflen); + break; + + default: + netdev_info(usbdev->net, "indication: 0x%08x\n", + le32_to_cpu(msg->status)); + break; + } +} + +static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy) +{ + struct { + __le32 num_items; + __le32 items[8]; + } networks_supported; + struct ndis_80211_capability *caps; + u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16]; + int len, retval, i, n; + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + + /* determine supported modes */ + len = sizeof(networks_supported); + retval = rndis_query_oid(usbdev, + RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED, + &networks_supported, &len); + if (retval >= 0) { + n = le32_to_cpu(networks_supported.num_items); + if (n > 8) + n = 8; + for (i = 0; i < n; i++) { + switch (le32_to_cpu(networks_supported.items[i])) { + case NDIS_80211_TYPE_FREQ_HOP: + case NDIS_80211_TYPE_DIRECT_SEQ: + priv->caps |= CAP_MODE_80211B; + break; + case NDIS_80211_TYPE_OFDM_A: + priv->caps |= CAP_MODE_80211A; + break; + case NDIS_80211_TYPE_OFDM_G: + priv->caps |= CAP_MODE_80211G; + break; + } + } + } + + /* get device 802.11 capabilities, number of PMKIDs */ + caps = (struct ndis_80211_capability *)caps_buf; + len = sizeof(caps_buf); + retval = rndis_query_oid(usbdev, + RNDIS_OID_802_11_CAPABILITY, + caps, &len); + if (retval >= 0) { + netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, " + "ver %d, pmkids %d, auth-encr-pairs %d\n", + le32_to_cpu(caps->length), + le32_to_cpu(caps->version), + le32_to_cpu(caps->num_pmkids), + le32_to_cpu(caps->num_auth_encr_pair)); + wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids); + } else + wiphy->max_num_pmkids = 0; + + return retval; +} + +static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + enum nl80211_cqm_rssi_threshold_event event; + int thold, hyst, last_event; + + if (priv->cqm_rssi_thold >= 0 || rssi >= 0) + return; + if (priv->infra_mode != NDIS_80211_INFRA_INFRA) + return; + + last_event = priv->last_cqm_event_rssi; + thold = priv->cqm_rssi_thold; + hyst = priv->cqm_rssi_hyst; + + if (rssi < thold && (last_event == 0 || rssi < last_event - hyst)) + event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW; + else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst)) + event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; + else + return; + + priv->last_cqm_event_rssi = rssi; + cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL); +} + +#define DEVICE_POLLER_JIFFIES (HZ) +static void rndis_device_poller(struct work_struct *work) +{ + struct rndis_wlan_private *priv = + container_of(work, struct rndis_wlan_private, + dev_poller_work.work); + struct usbnet *usbdev = priv->usbdev; + __le32 rssi, tmp; + int len, ret, j; + int update_jiffies = DEVICE_POLLER_JIFFIES; + void *buf; + + /* Only check/do workaround when connected. Calling is_associated() + * also polls device with rndis_command() and catches for media link + * indications. + */ + if (!is_associated(usbdev)) { + /* Workaround bad scanning in BCM4320a devices with active + * background scanning when not associated. + */ + if (priv->device_type == RNDIS_BCM4320A && priv->radio_on && + !priv->scan_request) { + /* Get previous scan results */ + rndis_check_bssid_list(usbdev, NULL, NULL); + + /* Initiate new scan */ + rndis_start_bssid_list_scan(usbdev); + } + + goto end; + } + + len = sizeof(rssi); + ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI, + &rssi, &len); + if (ret == 0) { + priv->last_qual = level_to_qual(le32_to_cpu(rssi)); + rndis_do_cqm(usbdev, le32_to_cpu(rssi)); + } + + netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n", + ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi))); + + /* Workaround transfer stalls on poor quality links. + * TODO: find right way to fix these stalls (as stalls do not happen + * with ndiswrapper/windows driver). */ + if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) { + /* Decrease stats worker interval to catch stalls. + * faster. Faster than 400-500ms causes packet loss, + * Slower doesn't catch stalls fast enough. + */ + j = msecs_to_jiffies(priv->param_workaround_interval); + if (j > DEVICE_POLLER_JIFFIES) + j = DEVICE_POLLER_JIFFIES; + else if (j <= 0) + j = 1; + update_jiffies = j; + + /* Send scan OID. Use of both OIDs is required to get device + * working. + */ + tmp = cpu_to_le32(1); + rndis_set_oid(usbdev, + RNDIS_OID_802_11_BSSID_LIST_SCAN, + &tmp, sizeof(tmp)); + + len = CONTROL_BUFFER_SIZE; + buf = kmalloc(len, GFP_KERNEL); + if (!buf) + goto end; + + rndis_query_oid(usbdev, + RNDIS_OID_802_11_BSSID_LIST, + buf, &len); + kfree(buf); + } + +end: + if (update_jiffies >= HZ) + update_jiffies = round_jiffies_relative(update_jiffies); + else { + j = round_jiffies_relative(update_jiffies); + if (abs(j - update_jiffies) <= 10) + update_jiffies = j; + } + + queue_delayed_work(priv->workqueue, &priv->dev_poller_work, + update_jiffies); +} + +/* + * driver/device initialization + */ +static void rndis_copy_module_params(struct usbnet *usbdev, int device_type) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + + priv->device_type = device_type; + + priv->param_country[0] = modparam_country[0]; + priv->param_country[1] = modparam_country[1]; + priv->param_country[2] = 0; + priv->param_frameburst = modparam_frameburst; + priv->param_afterburner = modparam_afterburner; + priv->param_power_save = modparam_power_save; + priv->param_power_output = modparam_power_output; + priv->param_roamtrigger = modparam_roamtrigger; + priv->param_roamdelta = modparam_roamdelta; + + priv->param_country[0] = toupper(priv->param_country[0]); + priv->param_country[1] = toupper(priv->param_country[1]); + /* doesn't support EU as country code, use FI instead */ + if (!strcmp(priv->param_country, "EU")) + strcpy(priv->param_country, "FI"); + + if (priv->param_power_save < 0) + priv->param_power_save = 0; + else if (priv->param_power_save > 2) + priv->param_power_save = 2; + + if (priv->param_power_output < 0) + priv->param_power_output = 0; + else if (priv->param_power_output > 3) + priv->param_power_output = 3; + + if (priv->param_roamtrigger < -80) + priv->param_roamtrigger = -80; + else if (priv->param_roamtrigger > -60) + priv->param_roamtrigger = -60; + + if (priv->param_roamdelta < 0) + priv->param_roamdelta = 0; + else if (priv->param_roamdelta > 2) + priv->param_roamdelta = 2; + + if (modparam_workaround_interval < 0) + priv->param_workaround_interval = 500; + else + priv->param_workaround_interval = modparam_workaround_interval; +} + +static int unknown_early_init(struct usbnet *usbdev) +{ + /* copy module parameters for unknown so that iwconfig reports txpower + * and workaround parameter is copied to private structure correctly. + */ + rndis_copy_module_params(usbdev, RNDIS_UNKNOWN); + + /* This is unknown device, so do not try set configuration parameters. + */ + + return 0; +} + +static int bcm4320a_early_init(struct usbnet *usbdev) +{ + /* copy module parameters for bcm4320a so that iwconfig reports txpower + * and workaround parameter is copied to private structure correctly. + */ + rndis_copy_module_params(usbdev, RNDIS_BCM4320A); + + /* bcm4320a doesn't handle configuration parameters well. Try + * set any and you get partially zeroed mac and broken device. + */ + + return 0; +} + +static int bcm4320b_early_init(struct usbnet *usbdev) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + char buf[8]; + + rndis_copy_module_params(usbdev, RNDIS_BCM4320B); + + /* Early initialization settings, setting these won't have effect + * if called after generic_rndis_bind(). + */ + + rndis_set_config_parameter_str(usbdev, "Country", priv->param_country); + rndis_set_config_parameter_str(usbdev, "FrameBursting", + priv->param_frameburst ? "1" : "0"); + rndis_set_config_parameter_str(usbdev, "Afterburner", + priv->param_afterburner ? "1" : "0"); + sprintf(buf, "%d", priv->param_power_save); + rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf); + sprintf(buf, "%d", priv->param_power_output); + rndis_set_config_parameter_str(usbdev, "PwrOut", buf); + sprintf(buf, "%d", priv->param_roamtrigger); + rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf); + sprintf(buf, "%d", priv->param_roamdelta); + rndis_set_config_parameter_str(usbdev, "RoamDelta", buf); + + return 0; +} + +/* same as rndis_netdev_ops but with local multicast handler */ +static const struct net_device_ops rndis_wlan_netdev_ops = { + .ndo_open = usbnet_open, + .ndo_stop = usbnet_stop, + .ndo_start_xmit = usbnet_start_xmit, + .ndo_tx_timeout = usbnet_tx_timeout, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_rx_mode = rndis_wlan_set_multicast_list, +}; + +static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf) +{ + struct wiphy *wiphy; + struct rndis_wlan_private *priv; + int retval, len; + __le32 tmp; + + /* allocate wiphy and rndis private data + * NOTE: We only support a single virtual interface, so wiphy + * and wireless_dev are somewhat synonymous for this device. + */ + wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private)); + if (!wiphy) + return -ENOMEM; + + priv = wiphy_priv(wiphy); + usbdev->net->ieee80211_ptr = &priv->wdev; + priv->wdev.wiphy = wiphy; + priv->wdev.iftype = NL80211_IFTYPE_STATION; + + /* These have to be initialized before calling generic_rndis_bind(). + * Otherwise we'll be in big trouble in rndis_wlan_early_init(). + */ + usbdev->driver_priv = priv; + priv->usbdev = usbdev; + + mutex_init(&priv->command_lock); + + /* because rndis_command() sleeps we need to use workqueue */ + priv->workqueue = create_singlethread_workqueue("rndis_wlan"); + INIT_WORK(&priv->work, rndis_wlan_worker); + INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller); + INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results); + + /* try bind rndis_host */ + retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS); + if (retval < 0) + goto fail; + + /* generic_rndis_bind set packet filter to multicast_all+ + * promisc mode which doesn't work well for our devices (device + * picks up rssi to closest station instead of to access point). + * + * rndis_host wants to avoid all OID as much as possible + * so do promisc/multicast handling in rndis_wlan. + */ + usbdev->net->netdev_ops = &rndis_wlan_netdev_ops; + + tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST); + retval = rndis_set_oid(usbdev, + RNDIS_OID_GEN_CURRENT_PACKET_FILTER, + &tmp, sizeof(tmp)); + + len = sizeof(tmp); + retval = rndis_query_oid(usbdev, + RNDIS_OID_802_3_MAXIMUM_LIST_SIZE, + &tmp, &len); + priv->multicast_size = le32_to_cpu(tmp); + if (retval < 0 || priv->multicast_size < 0) + priv->multicast_size = 0; + if (priv->multicast_size > 0) + usbdev->net->flags |= IFF_MULTICAST; + else + usbdev->net->flags &= ~IFF_MULTICAST; + + /* fill-out wiphy structure and register w/ cfg80211 */ + memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN); + wiphy->privid = rndis_wiphy_privid; + wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) + | BIT(NL80211_IFTYPE_ADHOC); + wiphy->max_scan_ssids = 1; + + /* TODO: fill-out band/encr information based on priv->caps */ + rndis_wlan_get_caps(usbdev, wiphy); + + memcpy(priv->channels, rndis_channels, sizeof(rndis_channels)); + memcpy(priv->rates, rndis_rates, sizeof(rndis_rates)); + priv->band.channels = priv->channels; + priv->band.n_channels = ARRAY_SIZE(rndis_channels); + priv->band.bitrates = priv->rates; + priv->band.n_bitrates = ARRAY_SIZE(rndis_rates); + wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band; + wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; + + memcpy(priv->cipher_suites, rndis_cipher_suites, + sizeof(rndis_cipher_suites)); + wiphy->cipher_suites = priv->cipher_suites; + wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites); + + set_wiphy_dev(wiphy, &usbdev->udev->dev); + + if (wiphy_register(wiphy)) { + retval = -ENODEV; + goto fail; + } + + set_default_iw_params(usbdev); + + priv->power_mode = -1; + + /* set default rts/frag */ + rndis_set_wiphy_params(wiphy, + WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD); + + /* turn radio off on init */ + priv->radio_on = false; + disassociate(usbdev, false); + netif_carrier_off(usbdev->net); + + return 0; + +fail: + cancel_delayed_work_sync(&priv->dev_poller_work); + cancel_delayed_work_sync(&priv->scan_work); + cancel_work_sync(&priv->work); + flush_workqueue(priv->workqueue); + destroy_workqueue(priv->workqueue); + + wiphy_free(wiphy); + return retval; +} + +static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + + /* turn radio off */ + disassociate(usbdev, false); + + cancel_delayed_work_sync(&priv->dev_poller_work); + cancel_delayed_work_sync(&priv->scan_work); + cancel_work_sync(&priv->work); + flush_workqueue(priv->workqueue); + destroy_workqueue(priv->workqueue); + + rndis_unbind(usbdev, intf); + + wiphy_unregister(priv->wdev.wiphy); + wiphy_free(priv->wdev.wiphy); +} + +static int rndis_wlan_reset(struct usbnet *usbdev) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + int retval; + + netdev_dbg(usbdev->net, "%s()\n", __func__); + + retval = rndis_reset(usbdev); + if (retval) + netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval); + + /* rndis_reset cleared multicast list, so restore here. + (set_multicast_list() also turns on current packet filter) */ + set_multicast_list(usbdev); + + queue_delayed_work(priv->workqueue, &priv->dev_poller_work, + round_jiffies_relative(DEVICE_POLLER_JIFFIES)); + + return deauthenticate(usbdev); +} + +static int rndis_wlan_stop(struct usbnet *usbdev) +{ + struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + int retval; + __le32 filter; + + netdev_dbg(usbdev->net, "%s()\n", __func__); + + retval = disassociate(usbdev, false); + + priv->work_pending = 0; + cancel_delayed_work_sync(&priv->dev_poller_work); + cancel_delayed_work_sync(&priv->scan_work); + cancel_work_sync(&priv->work); + flush_workqueue(priv->workqueue); + + if (priv->scan_request) { + cfg80211_scan_done(priv->scan_request, true); + priv->scan_request = NULL; + } + + /* Set current packet filter zero to block receiving data packets from + device. */ + filter = 0; + rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter, + sizeof(filter)); + + return retval; +} + +static const struct driver_info bcm4320b_info = { + .description = "Wireless RNDIS device, BCM4320b based", + .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT | + FLAG_AVOID_UNLINK_URBS, + .bind = rndis_wlan_bind, + .unbind = rndis_wlan_unbind, + .status = rndis_status, + .rx_fixup = rndis_rx_fixup, + .tx_fixup = rndis_tx_fixup, + .reset = rndis_wlan_reset, + .stop = rndis_wlan_stop, + .early_init = bcm4320b_early_init, + .indication = rndis_wlan_indication, +}; + +static const struct driver_info bcm4320a_info = { + .description = "Wireless RNDIS device, BCM4320a based", + .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT | + FLAG_AVOID_UNLINK_URBS, + .bind = rndis_wlan_bind, + .unbind = rndis_wlan_unbind, + .status = rndis_status, + .rx_fixup = rndis_rx_fixup, + .tx_fixup = rndis_tx_fixup, + .reset = rndis_wlan_reset, + .stop = rndis_wlan_stop, + .early_init = bcm4320a_early_init, + .indication = rndis_wlan_indication, +}; + +static const struct driver_info rndis_wlan_info = { + .description = "Wireless RNDIS device", + .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT | + FLAG_AVOID_UNLINK_URBS, + .bind = rndis_wlan_bind, + .unbind = rndis_wlan_unbind, + .status = rndis_status, + .rx_fixup = rndis_rx_fixup, + .tx_fixup = rndis_tx_fixup, + .reset = rndis_wlan_reset, + .stop = rndis_wlan_stop, + .early_init = unknown_early_init, + .indication = rndis_wlan_indication, +}; + +/*-------------------------------------------------------------------------*/ + +static const struct usb_device_id products [] = { +#define RNDIS_MASTER_INTERFACE \ + .bInterfaceClass = USB_CLASS_COMM, \ + .bInterfaceSubClass = 2 /* ACM */, \ + .bInterfaceProtocol = 0x0ff + +/* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom + * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki. + */ +{ + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x0411, + .idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */ + RNDIS_MASTER_INTERFACE, + .driver_info = (unsigned long) &bcm4320b_info, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x0baf, + .idProduct = 0x011b, /* U.S. Robotics USR5421 */ + RNDIS_MASTER_INTERFACE, + .driver_info = (unsigned long) &bcm4320b_info, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x050d, + .idProduct = 0x011b, /* Belkin F5D7051 */ + RNDIS_MASTER_INTERFACE, + .driver_info = (unsigned long) &bcm4320b_info, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x1799, /* Belkin has two vendor ids */ + .idProduct = 0x011b, /* Belkin F5D7051 */ + RNDIS_MASTER_INTERFACE, + .driver_info = (unsigned long) &bcm4320b_info, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x13b1, + .idProduct = 0x0014, /* Linksys WUSB54GSv2 */ + RNDIS_MASTER_INTERFACE, + .driver_info = (unsigned long) &bcm4320b_info, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x13b1, + .idProduct = 0x0026, /* Linksys WUSB54GSC */ + RNDIS_MASTER_INTERFACE, + .driver_info = (unsigned long) &bcm4320b_info, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x0b05, + .idProduct = 0x1717, /* Asus WL169gE */ + RNDIS_MASTER_INTERFACE, + .driver_info = (unsigned long) &bcm4320b_info, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x0a5c, + .idProduct = 0xd11b, /* Eminent EM4045 */ + RNDIS_MASTER_INTERFACE, + .driver_info = (unsigned long) &bcm4320b_info, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x1690, + .idProduct = 0x0715, /* BT Voyager 1055 */ + RNDIS_MASTER_INTERFACE, + .driver_info = (unsigned long) &bcm4320b_info, +}, +/* These devices have DriverVer < 4.xx.xx.xx and do not have any custom + * parameters available, hardware probably contain older firmware version with + * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki. + */ +{ + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x13b1, + .idProduct = 0x000e, /* Linksys WUSB54GSv1 */ + RNDIS_MASTER_INTERFACE, + .driver_info = (unsigned long) &bcm4320a_info, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x0baf, + .idProduct = 0x0111, /* U.S. Robotics USR5420 */ + RNDIS_MASTER_INTERFACE, + .driver_info = (unsigned long) &bcm4320a_info, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x0411, + .idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */ + RNDIS_MASTER_INTERFACE, + .driver_info = (unsigned long) &bcm4320a_info, +}, +/* Generic Wireless RNDIS devices that we don't have exact + * idVendor/idProduct/chip yet. + */ +{ + /* RNDIS is MSFT's un-official variant of CDC ACM */ + USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff), + .driver_info = (unsigned long) &rndis_wlan_info, +}, { + /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */ + USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1), + .driver_info = (unsigned long) &rndis_wlan_info, +}, + { }, // END +}; +MODULE_DEVICE_TABLE(usb, products); + +static struct usb_driver rndis_wlan_driver = { + .name = "rndis_wlan", + .id_table = products, + .probe = usbnet_probe, + .disconnect = usbnet_disconnect, + .suspend = usbnet_suspend, + .resume = usbnet_resume, + .disable_hub_initiated_lpm = 1, +}; + +module_usb_driver(rndis_wlan_driver); + +MODULE_AUTHOR("Bjorge Dijkstra"); +MODULE_AUTHOR("Jussi Kivilinna"); +MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters"); +MODULE_LICENSE("GPL"); + |