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linux/drivers/net/wireless/rndis_wlan.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_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)
/* 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)
};
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;
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 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 infra_mode;
bool connected;
u8 bssid[ETH_ALEN];
struct ndis_80211_ssid essid;
__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);
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 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,
};
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_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_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, 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);
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) {
memcpy(&priv->essid, ssid, sizeof(priv->essid));
priv->radio_on = true;
netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
}
return ret;
}
static int set_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
{
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)
{
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;
__le32 tmp;
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);
if (!request)
return -EINVAL;
if (priv->scan_request && priv->scan_request != request)
return -EBUSY;
priv->scan_request = request;
tmp = cpu_to_le32(1);
ret = rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
sizeof(tmp));
if (ret == 0) {
/* Wait before retrieving scan results from device */
queue_delayed_work(priv->workqueue, &priv->scan_work,
SCAN_DELAY_JIFFIES);
}
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]\n",
bssid->ssid.essid, bssid->mac);
/* 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 int rndis_check_bssid_list(struct usbnet *usbdev)
{
void *buf = NULL;
struct ndis_80211_bssid_list_ex *bssid_list;
struct ndis_80211_bssid_ex *bssid;
int ret = -EINVAL, len, count, bssid_len;
bool resized = false;
netdev_dbg(usbdev->net, "check_bssid_list\n");
len = CONTROL_BUFFER_SIZE;
resize_buf:
buf = kmalloc(len, GFP_KERNEL);
if (!buf) {
ret = -ENOMEM;
goto out;
}
ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
if (ret != 0)
goto out;
if (!resized && len > CONTROL_BUFFER_SIZE) {
resized = true;
kfree(buf);
goto resize_buf;
}
bssid_list = buf;
bssid = bssid_list->bssid;
bssid_len = le32_to_cpu(bssid->length);
count = le32_to_cpu(bssid_list->num_items);
netdev_dbg(usbdev->net, "check_bssid_list: %d BSSIDs found (buflen: %d)\n",
count, len);
while (count && ((void *)bssid + bssid_len) <= (buf + len)) {
rndis_bss_info_update(usbdev, bssid);
bssid = (void *)bssid + bssid_len;
bssid_len = le32_to_cpu(bssid->length);
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);
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)
{
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;
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));
}
/*
* 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;
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 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 always contains at least the currently
* connected bss and we can get it to cfg80211 with
* rndis_check_bssid_list().
* NOTE: This is true for Broadcom chip, but not mentioned in RNDIS
* spec.
*/
rndis_check_bssid_list(usbdev);
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, 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;
}
#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))
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));
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)
{
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
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 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);
/* 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);
/* 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);
/* set default rts/frag */
rndis_set_wiphy_params(wiphy,
WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
/* turn radio on */
priv->radio_on = true;
disassociate(usbdev, true);
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 = bcm4320a_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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