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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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>
*
* 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 0
#define WORK_LINK_DOWN 1
#define WORK_SET_MULTICAST_LIST 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,
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 == -1 || 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, NL80211_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 = struct_size(pmkids, bssid_info, max_pmkids);
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 = struct_size(pmkids, bssid_info, num_pmkids);
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, 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--;
pmkids->length = cpu_to_le32(struct_size(pmkids, bssid_info, count));
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 = struct_size(pmkids, bssid_info, count + 1);
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,
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;
struct cfg80211_scan_info info = {};
int ret;
netdev_dbg(usbdev->net, "get_scan_results\n");
if (!priv->scan_request)
return;
ret = rndis_check_bssid_list(usbdev, NULL, NULL);
info.aborted = ret < 0;
cfg80211_scan_done(priv->scan_request, &info);
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_ULL(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_ULL(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. */