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linux/drivers/net/wireless/rndis_wlan.c
Jouni Malinen ed9d01026f cfg80211: Use consistent BSS matching between scan and sme 
cfg80211 scan code adds separate BSS entries if the same BSS shows up
on multiple channels. However, sme implementation does not use the
frequency when fetching the BSS entry. Fix this by adding channel
information to cfg80211_roamed() and include it in cfg80211_get_bss()
calls.

Please note that drivers using cfg80211_roamed() need to be modified to
fully implement this fix. This commit includes only minimal changes to
avoid compilation issues; it maintains the old (broken) behavior for
most drivers. ath6kl was the only one that I could test, so I updated
it to provide the operating frequency in the roamed event.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-05-19 10:37:18 -04:00

3776 lines
101 KiB
C
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/*
* 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@mbnet.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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* 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/init.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/wireless.h>
#include <linux/ieee80211.h>
#include <linux/if_arp.h>
#include <linux/ctype.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <net/iw_handler.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)");
/* various RNDIS OID defs */
#define OID_GEN_LINK_SPEED cpu_to_le32(0x00010107)
#define OID_GEN_RNDIS_CONFIG_PARAMETER cpu_to_le32(0x0001021b)
#define OID_GEN_XMIT_OK cpu_to_le32(0x00020101)
#define OID_GEN_RCV_OK cpu_to_le32(0x00020102)
#define OID_GEN_XMIT_ERROR cpu_to_le32(0x00020103)
#define OID_GEN_RCV_ERROR cpu_to_le32(0x00020104)
#define OID_GEN_RCV_NO_BUFFER cpu_to_le32(0x00020105)
#define OID_802_3_CURRENT_ADDRESS cpu_to_le32(0x01010102)
#define OID_802_3_MULTICAST_LIST cpu_to_le32(0x01010103)
#define OID_802_3_MAXIMUM_LIST_SIZE cpu_to_le32(0x01010104)
#define OID_802_11_BSSID cpu_to_le32(0x0d010101)
#define OID_802_11_SSID cpu_to_le32(0x0d010102)
#define OID_802_11_INFRASTRUCTURE_MODE cpu_to_le32(0x0d010108)
#define OID_802_11_ADD_WEP cpu_to_le32(0x0d010113)
#define OID_802_11_REMOVE_WEP cpu_to_le32(0x0d010114)
#define OID_802_11_DISASSOCIATE cpu_to_le32(0x0d010115)
#define OID_802_11_AUTHENTICATION_MODE cpu_to_le32(0x0d010118)
#define OID_802_11_PRIVACY_FILTER cpu_to_le32(0x0d010119)
#define OID_802_11_BSSID_LIST_SCAN cpu_to_le32(0x0d01011a)
#define OID_802_11_ENCRYPTION_STATUS cpu_to_le32(0x0d01011b)
#define OID_802_11_ADD_KEY cpu_to_le32(0x0d01011d)
#define OID_802_11_REMOVE_KEY cpu_to_le32(0x0d01011e)
#define OID_802_11_ASSOCIATION_INFORMATION cpu_to_le32(0x0d01011f)
#define OID_802_11_CAPABILITY cpu_to_le32(0x0d010122)
#define OID_802_11_PMKID cpu_to_le32(0x0d010123)
#define OID_802_11_NETWORK_TYPES_SUPPORTED cpu_to_le32(0x0d010203)
#define OID_802_11_NETWORK_TYPE_IN_USE cpu_to_le32(0x0d010204)
#define OID_802_11_TX_POWER_LEVEL cpu_to_le32(0x0d010205)
#define OID_802_11_RSSI cpu_to_le32(0x0d010206)
#define OID_802_11_RSSI_TRIGGER cpu_to_le32(0x0d010207)
#define OID_802_11_FRAGMENTATION_THRESHOLD cpu_to_le32(0x0d010209)
#define OID_802_11_RTS_THRESHOLD cpu_to_le32(0x0d01020a)
#define OID_802_11_SUPPORTED_RATES cpu_to_le32(0x0d01020e)
#define OID_802_11_CONFIGURATION cpu_to_le32(0x0d010211)
#define OID_802_11_POWER_MODE cpu_to_le32(0x0d010216)
#define OID_802_11_BSSID_LIST cpu_to_le32(0x0d010217)
/* 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
/* codes for "status" field of completion messages */
#define RNDIS_STATUS_ADAPTER_NOT_READY cpu_to_le32(0xc0010011)
#define RNDIS_STATUS_ADAPTER_NOT_OPEN cpu_to_le32(0xc0010012)
/* 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,
};
struct ndis_80211_auth_request {
__le32 length;
u8 bssid[6];
u8 padding[2];
__le32 flags;
} __packed;
struct ndis_80211_pmkid_candidate {
u8 bssid[6];
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[6];
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[6];
u8 padding[6];
u8 rsc[8];
u8 material[32];
} __packed;
struct ndis_80211_remove_key {
__le32 size;
__le32 index;
u8 bssid[6];
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[6];
} 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[6];
u8 pmkid[16];
};
struct ndis_80211_pmkid {
__le32 length;
__le32 bssid_info_count;
struct ndis_80211_bssid_info bssid_info[0];
};
/*
* private data
*/
#define NET_TYPE_11FB 0
#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_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];
__le32 current_command_oid;
/* encryption stuff */
int encr_tx_key_index;
struct rndis_wlan_encr_key encr_keys[4];
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 net_device *dev,
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,
enum nl80211_tx_power_setting type,
int mbm);
static int rndis_get_tx_power(struct wiphy *wiphy, 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_set_channel(struct wiphy *wiphy, struct net_device *dev,
struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
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,
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,
.set_channel = rndis_set_channel,
.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, int 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(__le32 oid)
{
switch (oid) {
#define OID_STR(oid) case oid: return(#oid)
/* from rndis_host.h */
OID_STR(OID_802_3_PERMANENT_ADDRESS);
OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
OID_STR(OID_GEN_PHYSICAL_MEDIUM);
/* from rndis_wlan.c */
OID_STR(OID_GEN_LINK_SPEED);
OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
OID_STR(OID_GEN_XMIT_OK);
OID_STR(OID_GEN_RCV_OK);
OID_STR(OID_GEN_XMIT_ERROR);
OID_STR(OID_GEN_RCV_ERROR);
OID_STR(OID_GEN_RCV_NO_BUFFER);
OID_STR(OID_802_3_CURRENT_ADDRESS);
OID_STR(OID_802_3_MULTICAST_LIST);
OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
OID_STR(OID_802_11_BSSID);
OID_STR(OID_802_11_SSID);
OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
OID_STR(OID_802_11_ADD_WEP);
OID_STR(OID_802_11_REMOVE_WEP);
OID_STR(OID_802_11_DISASSOCIATE);
OID_STR(OID_802_11_AUTHENTICATION_MODE);
OID_STR(OID_802_11_PRIVACY_FILTER);
OID_STR(OID_802_11_BSSID_LIST_SCAN);
OID_STR(OID_802_11_ENCRYPTION_STATUS);
OID_STR(OID_802_11_ADD_KEY);
OID_STR(OID_802_11_REMOVE_KEY);
OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
OID_STR(OID_802_11_CAPABILITY);
OID_STR(OID_802_11_PMKID);
OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
OID_STR(OID_802_11_TX_POWER_LEVEL);
OID_STR(OID_802_11_RSSI);
OID_STR(OID_802_11_RSSI_TRIGGER);
OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
OID_STR(OID_802_11_RTS_THRESHOLD);
OID_STR(OID_802_11_SUPPORTED_RATES);
OID_STR(OID_802_11_CONFIGURATION);
OID_STR(OID_802_11_POWER_MODE);
OID_STR(OID_802_11_BSSID_LIST);
#undef OID_STR
}
return "?";
}
#else
static const char *oid_to_string(__le32 oid)
{
return "?";
}
#endif
/* translate error code */
static int rndis_error_status(__le32 rndis_status)
{
int ret = -EINVAL;
switch (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, __le32 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 = RNDIS_MSG_QUERY;
u.get->msg_len = cpu_to_le32(sizeof *u.get);
u.get->oid = 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, __le32 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 = RNDIS_MSG_SET;
u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
u.set->oid = 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 = 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, 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: OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
tmp = cpu_to_le32(1);
return rndis_set_oid(usbdev, 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, 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, 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, OID_802_11_BSSID, bssid, &len);
if (ret != 0)
memset(bssid, 0, ETH_ALEN);
return ret;
}
static int get_association_info(struct usbnet *usbdev,
struct ndis_80211_assoc_info *info, int len)
{
return rndis_query_oid(usbdev, 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, 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, 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, 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, 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, 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, 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, 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 = ieee80211_dsss_chan_to_freq(channel) * 1000;
len = sizeof(config);
ret = rndis_query_oid(usbdev, 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, OID_802_11_CONFIGURATION, &config,
sizeof(config));
netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
return ret;
}
/* index must be 0 - N, as per NDIS */
static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
int 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 ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
return -EINVAL;
if (key_len == 5)
cipher = WLAN_CIPHER_SUITE_WEP40;
else
cipher = WLAN_CIPHER_SUITE_WEP104;
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, 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);
memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
return 0;
}
static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
int 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 < 0 || index >= 4) {
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)
memset(ndis_key.bssid, 0xff, ETH_ALEN);
else
get_bssid(usbdev, ndis_key.bssid);
}
ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
le32_to_cpu(ndis_key.size));
netdev_dbg(usbdev->net, "%s(): 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
memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
priv->encr_tx_key_index = index;
return 0;
}
static int restore_key(struct usbnet *usbdev, int 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, int 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, int 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 (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, 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, 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 = RNDIS_PACKET_TYPE_DIRECTED |
RNDIS_PACKET_TYPE_BROADCAST;
if (usbdev->net->flags & IFF_PROMISC) {
filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
RNDIS_PACKET_TYPE_ALL_LOCAL;
} else if (usbdev->net->flags & IFF_ALLMULTI) {
filter |= 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 |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
} else if (mc_count) {
int i = 0;
mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
if (!mc_addrs) {
netdev_warn(usbdev->net,
"couldn't alloc %d bytes of memory\n",
mc_count * ETH_ALEN);
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, OID_802_3_MULTICAST_LIST, mc_addrs,
mc_count * ETH_ALEN);
kfree(mc_addrs);
if (ret == 0)
filter |= RNDIS_PACKET_TYPE_MULTICAST;
else
filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
mc_count, priv->multicast_size, ret);
}
set_filter:
ret = rndis_set_oid(usbdev, 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, "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, OID_802_11_PMKID, pmkids, &len);
if (ret < 0) {
netdev_dbg(usbdev->net, "%s(): 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, OID_802_11_PMKID, pmkids,
le32_to_cpu(pmkids->length));
if (ret < 0) {
netdev_dbg(usbdev->net, "%s(): 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, len, count, newlen, err;
len = le32_to_cpu(pmkids->length);
count = le32_to_cpu(pmkids->bssid_info_count);
if (count > max_pmkids)
count = max_pmkids;
for (i = 0; i < count; i++)
if (!compare_ether_addr(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)
{
int i, err, len, count, newlen;
len = le32_to_cpu(pmkids->length);
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 (compare_ether_addr(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]);
pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
if (!pmkids) {
err = -ENOMEM;
goto error;
}
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,
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, 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 net_device *dev,
struct cfg80211_scan_request *request)
{
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 (!request)
return -EINVAL;
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 struct cfg80211_bss *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;
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);
return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
timestamp, capability, beacon_interval, ie, ie_len, signal,
GFP_KERNEL);
}
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, 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 (compare_ether_addr(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;
memset(priv->bssid, 0, ETH_ALEN);
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->channel;
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;
memset(priv->bssid, 0, ETH_ALEN);
return deauthenticate(usbdev);
}
static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
{
struct rndis_wlan_private *priv = wiphy_priv(wiphy);
struct usbnet *usbdev = priv->usbdev;
return set_channel(usbdev,
ieee80211_frequency_to_channel(chan->center_freq));
}
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);
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, OID_GEN_LINK_SPEED, &linkspeed, &len);
if (ret == 0) {
sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
sinfo->filled |= STATION_INFO_TX_BITRATE;
}
len = sizeof(rssi);
ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
if (ret == 0) {
sinfo->signal = level_to_qual(le32_to_cpu(rssi));
sinfo->filled |= STATION_INFO_SIGNAL;
}
}
static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
u8 *mac, struct station_info *sinfo)
{
struct rndis_wlan_private *priv = wiphy_priv(wiphy);
struct usbnet *usbdev = priv->usbdev;
if (compare_ether_addr(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, 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, OID_802_11_POWER_MODE, &mode, sizeof(mode));
netdev_dbg(usbdev->net, "%s(): 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_conf config;
struct ndis_80211_ssid ssid;
s32 signal;
u64 timestamp;
u16 capability;
u16 beacon_interval;
__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, OID_802_11_RSSI, &rssi, &len);
signal = level_to_qual(le32_to_cpu(rssi));
netdev_dbg(usbdev->net, "%s(): 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 */
len = sizeof(config);
ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
netdev_dbg(usbdev->net, "%s(): OID_802_11_CONFIGURATION -> %d\n",
__func__, ret);
if (ret >= 0) {
beacon_interval = le16_to_cpu(config.beacon_period);
channel = ieee80211_get_channel(priv->wdev.wiphy,
KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
if (!channel) {
netdev_warn(usbdev->net, "%s(): could not get channel."
"\n", __func__);
return;
}
} else {
netdev_warn(usbdev->net, "%s(): could not get configuration.\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, OID_802_11_SSID, &ssid, &len);
netdev_dbg(usbdev->net, "%s(): 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_interval, ie_len,
ssid.essid, signal);
cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
timestamp, capability, beacon_interval, ie_buf, ie_len,
signal, GFP_KERNEL);
}
/*
* 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];
int resp_ie_len, req_ie_len;
u8 *req_ie, *resp_ie;
int ret, offset;
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 > 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 > 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 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, 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, GFP_KERNEL);
if (info != NULL)
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;
memset(priv->bssid, 0, ETH_ALEN);
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];
netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, bssid: %pM\n",
i, le32_to_cpu(cand->flags), cand->bssid);
#if 0
struct iw_pmkid_cand pcand;
union iwreq_data wrqu;
memset(&pcand, 0, sizeof(pcand));
if (le32_to_cpu(cand->flags) & 0x01)
pcand.flags |= IW_PMKID_CAND_PREAUTH;
pcand.index = i;
memcpy(pcand.bssid.sa_data, cand->bssid, ETH_ALEN);
memset(&wrqu, 0, sizeof(wrqu));
wrqu.data.length = sizeof(pcand);
wireless_send_event(usbdev->net, IWEVPMKIDCAND, &wrqu,
(u8 *)&pcand);
#endif
}
}
static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
struct rndis_indicate *msg, int buflen)
{
struct ndis_80211_status_indication *indication;
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 (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 (msg->status) {
case RNDIS_STATUS_MEDIA_CONNECT:
if (priv->current_command_oid == OID_802_11_ADD_KEY) {
/* 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 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, 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, OID_802_11_CAPABILITY, caps, &len);
if (retval >= 0) {
netdev_dbg(usbdev->net, "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, 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: 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, 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, 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_multicast_list = 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 = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
sizeof(tmp));
len = sizeof(tmp);
retval = rndis_query_oid(usbdev, 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, 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,
};
static int __init rndis_wlan_init(void)
{
return usb_register(&rndis_wlan_driver);
}
module_init(rndis_wlan_init);
static void __exit rndis_wlan_exit(void)
{
usb_deregister(&rndis_wlan_driver);
}
module_exit(rndis_wlan_exit);
MODULE_AUTHOR("Bjorge Dijkstra");
MODULE_AUTHOR("Jussi Kivilinna");
MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
MODULE_LICENSE("GPL");
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