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linux/drivers/net/wireless/rndis_wlan.c
Jussi Kivilinna 7834ddbcc7 usbnet: add rx queue pausing 
Add rx queue pausing to usbnet. This is needed by rndis_wlan so that it can
control rx queue and prevent received packets from being send forward before
rndis_wlan receives and handles 'media connect'-indication. Without this
establishing WPA connections is hard and fail often.

[v2] - removed unneeded use of skb_clone

Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-14 09:14:04 -04:00

3203 lines
84 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 <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 = 500;
module_param_named(workaround_interval, modparam_workaround_interval,
int, 0444);
MODULE_PARM_DESC(workaround_interval,
"set stall workaround interval in msecs (default: 500)");
/* 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_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;
} __attribute__((packed));
struct ndis_80211_pmkid_candidate {
u8 bssid[6];
u8 padding[2];
__le32 flags;
} __attribute__((packed));
struct ndis_80211_pmkid_cand_list {
__le32 version;
__le32 num_candidates;
struct ndis_80211_pmkid_candidate candidate_list[0];
} __attribute__((packed));
struct ndis_80211_status_indication {
__le32 status_type;
union {
enum ndis_80211_media_stream_mode media_stream_mode;
enum ndis_80211_radio_status radio_status;
struct ndis_80211_auth_request auth_request[0];
struct ndis_80211_pmkid_cand_list cand_list;
} u;
} __attribute__((packed));
struct ndis_80211_ssid {
__le32 length;
u8 essid[NDIS_802_11_LENGTH_SSID];
} __attribute__((packed));
struct ndis_80211_conf_freq_hop {
__le32 length;
__le32 hop_pattern;
__le32 hop_set;
__le32 dwell_time;
} __attribute__((packed));
struct ndis_80211_conf {
__le32 length;
__le32 beacon_period;
__le32 atim_window;
__le32 ds_config;
struct ndis_80211_conf_freq_hop fh_config;
} __attribute__((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];
} __attribute__((packed));
struct ndis_80211_bssid_list_ex {
__le32 num_items;
struct ndis_80211_bssid_ex bssid[0];
} __attribute__((packed));
struct ndis_80211_fixed_ies {
u8 timestamp[8];
__le16 beacon_interval;
__le16 capabilities;
} __attribute__((packed));
struct ndis_80211_wep_key {
__le32 size;
__le32 index;
__le32 length;
u8 material[32];
} __attribute__((packed));
struct ndis_80211_key {
__le32 size;
__le32 index;
__le32 length;
u8 bssid[6];
u8 padding[6];
u8 rsc[8];
u8 material[32];
} __attribute__((packed));
struct ndis_80211_remove_key {
__le32 size;
__le32 index;
u8 bssid[6];
u8 padding[2];
} __attribute__((packed));
struct ndis_config_param {
__le32 name_offs;
__le32 name_length;
__le32 type;
__le32 value_offs;
__le32 value_length;
} __attribute__((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;
} __attribute__((packed));
/* these have to match what is in wpa_supplicant */
enum wpa_alg { WPA_ALG_NONE, WPA_ALG_WEP, WPA_ALG_TKIP, WPA_ALG_CCMP };
enum wpa_cipher { CIPHER_NONE, CIPHER_WEP40, CIPHER_TKIP, CIPHER_CCMP,
CIPHER_WEP104 };
enum wpa_key_mgmt { KEY_MGMT_802_1X, KEY_MGMT_PSK, KEY_MGMT_NONE,
KEY_MGMT_802_1X_NO_WPA, KEY_MGMT_WPA_NONE };
/*
* 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 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 }
};
struct rndis_wlan_encr_key {
int len;
int 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 stats_work;
struct delayed_work scan_work;
struct work_struct work;
struct mutex command_lock;
spinlock_t stats_lock;
unsigned long work_pending;
struct ieee80211_supported_band band;
struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
struct iw_statistics iwstats;
struct iw_statistics privstats;
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 */
int radio_on;
int infra_mode;
struct ndis_80211_ssid essid;
/* encryption stuff */
int encr_tx_key_index;
struct rndis_wlan_encr_key encr_keys[4];
int wpa_version;
int wpa_keymgmt;
int wpa_authalg;
int wpa_ie_len;
u8 *wpa_ie;
int wpa_cipher_pair;
int wpa_cipher_group;
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 tx_power_setting type,
int dbm);
static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
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,
};
static void *rndis_wiphy_privid = &rndis_wiphy_privid;
static const unsigned char zero_bssid[ETH_ALEN] = {0,};
static const unsigned char ffff_bssid[ETH_ALEN] = { 0xff, 0xff, 0xff,
0xff, 0xff, 0xff };
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);
}
#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;
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;
ret = rndis_command(dev, u.header, buflen);
if (ret < 0)
devdbg(dev, "rndis_query_oid(%s): rndis_command() failed, %d "
"(%08x)", oid_to_string(oid), ret,
le32_to_cpu(u.get_c->status));
if (ret == 0) {
ret = le32_to_cpu(u.get_c->len);
*len = (*len > ret) ? ret : *len;
memcpy(data, u.buf + le32_to_cpu(u.get_c->offset) + 8, *len);
ret = rndis_error_status(u.get_c->status);
if (ret < 0)
devdbg(dev, "rndis_query_oid(%s): device returned "
"error, 0x%08x (%d)", oid_to_string(oid),
le32_to_cpu(u.get_c->status), ret);
}
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);
ret = rndis_command(dev, u.header, buflen);
if (ret < 0)
devdbg(dev, "rndis_set_oid(%s): rndis_command() failed, %d "
"(%08x)", 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)
devdbg(dev, "rndis_set_oid(%s): device returned error, "
"0x%08x (%d)", 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));
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)
devdbg(dev, "setting config parameter: %s, value: %s",
param, (u8 *)value);
else
devdbg(dev, "setting config parameter: %s, value: %d",
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
devdbg(dev, "info buffer (len: %d):", info_len);
for (i = 0; i < info_len; i += 12) {
u32 *tmp = (u32 *)((u8 *)infobuf + i);
devdbg(dev, "%08X:%08X:%08X",
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)
devdbg(dev, "setting rndis config parameter failed, %d.", 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));
}
/*static int rndis_set_config_parameter_u32(struct usbnet *dev,
char *param, u32 value)
{
return(rndis_set_config_parameter(dev, param, 0, &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;
}
static void dsconfig_to_freq(unsigned int dsconfig, struct iw_freq *freq)
{
freq->e = 0;
freq->i = 0;
freq->flags = 0;
/* see comment in wireless.h above the "struct iw_freq"
* definition for an explanation of this if
* NOTE: 1000000 is due to the kHz
*/
if (dsconfig > 1000000) {
freq->m = dsconfig / 10;
freq->e = 1;
} else
freq->m = dsconfig;
/* convert from kHz to Hz */
freq->e += 3;
}
static int freq_to_dsconfig(struct iw_freq *freq, unsigned int *dsconfig)
{
if (freq->m < 1000 && freq->e == 0) {
if (freq->m >= 1 && freq->m <= 14)
*dsconfig = ieee80211_dsss_chan_to_freq(freq->m) * 1000;
else
return -1;
} else {
int i;
*dsconfig = freq->m;
for (i = freq->e; i > 0; i--)
*dsconfig *= 10;
*dsconfig /= 1000;
}
return 0;
}
/*
* common functions
*/
static void restore_keys(struct usbnet *usbdev);
static int get_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
{
int ret, len;
len = sizeof(*ssid);
ret = rndis_query_oid(usbdev, OID_802_11_SSID, ssid, &len);
if (ret != 0)
ssid->length = 0;
#ifdef DEBUG
{
unsigned char tmp[NDIS_802_11_LENGTH_SSID + 1];
memcpy(tmp, ssid->essid, le32_to_cpu(ssid->length));
tmp[le32_to_cpu(ssid->length)] = 0;
devdbg(usbdev, "get_essid: '%s', ret: %d", tmp, ret);
}
#endif
return ret;
}
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) {
memcpy(&priv->essid, ssid, sizeof(priv->essid));
priv->radio_on = 1;
devdbg(usbdev, "set_essid: radio_on = 1");
}
return ret;
}
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 int is_associated(struct usbnet *usbdev)
{
u8 bssid[ETH_ALEN];
int ret;
ret = get_bssid(usbdev, bssid);
return(ret == 0 && memcmp(bssid, zero_bssid, ETH_ALEN) != 0);
}
static int disassociate(struct usbnet *usbdev, int 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 = 0;
devdbg(usbdev, "disassociate: radio_on = 0");
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) {
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, int wpa_version, int authalg)
{
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
__le32 tmp;
int auth_mode, ret;
devdbg(usbdev, "set_auth_mode: wpa_version=0x%x authalg=0x%x "
"keymgmt=0x%x", wpa_version, authalg, priv->wpa_keymgmt);
if (wpa_version & IW_AUTH_WPA_VERSION_WPA2) {
if (priv->wpa_keymgmt & IW_AUTH_KEY_MGMT_802_1X)
auth_mode = NDIS_80211_AUTH_WPA2;
else
auth_mode = NDIS_80211_AUTH_WPA2_PSK;
} else if (wpa_version & IW_AUTH_WPA_VERSION_WPA) {
if (priv->wpa_keymgmt & IW_AUTH_KEY_MGMT_802_1X)
auth_mode = NDIS_80211_AUTH_WPA;
else if (priv->wpa_keymgmt & IW_AUTH_KEY_MGMT_PSK)
auth_mode = NDIS_80211_AUTH_WPA_PSK;
else
auth_mode = NDIS_80211_AUTH_WPA_NONE;
} else if (authalg & IW_AUTH_ALG_SHARED_KEY) {
if (authalg & IW_AUTH_ALG_OPEN_SYSTEM)
auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
else
auth_mode = NDIS_80211_AUTH_SHARED;
} else
auth_mode = NDIS_80211_AUTH_OPEN;
tmp = cpu_to_le32(auth_mode);
ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
sizeof(tmp));
if (ret != 0) {
devwarn(usbdev, "setting auth mode failed (%08X)", ret);
return ret;
}
priv->wpa_version = wpa_version;
priv->wpa_authalg = authalg;
return 0;
}
static int set_priv_filter(struct usbnet *usbdev)
{
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
__le32 tmp;
devdbg(usbdev, "set_priv_filter: wpa_version=0x%x", priv->wpa_version);
if (priv->wpa_version & IW_AUTH_WPA_VERSION_WPA2 ||
priv->wpa_version & IW_AUTH_WPA_VERSION_WPA)
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)
{
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
__le32 tmp;
int encr_mode, ret;
devdbg(usbdev, "set_encr_mode: cipher_pair=0x%x cipher_group=0x%x",
pairwise,
groupwise);
if (pairwise & IW_AUTH_CIPHER_CCMP)
encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
else if (pairwise & IW_AUTH_CIPHER_TKIP)
encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
else if (pairwise &
(IW_AUTH_CIPHER_WEP40 | IW_AUTH_CIPHER_WEP104))
encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
else if (groupwise & IW_AUTH_CIPHER_CCMP)
encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
else if (groupwise & IW_AUTH_CIPHER_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) {
devwarn(usbdev, "setting encr mode failed (%08X)", ret);
return ret;
}
priv->wpa_cipher_pair = pairwise;
priv->wpa_cipher_group = groupwise;
return 0;
}
static int set_assoc_params(struct usbnet *usbdev)
{
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
set_auth_mode(usbdev, priv->wpa_version, priv->wpa_authalg);
set_priv_filter(usbdev);
set_encr_mode(usbdev, priv->wpa_cipher_pair, priv->wpa_cipher_group);
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;
devdbg(usbdev, "set_infra_mode: infra_mode=0x%x", priv->infra_mode);
tmp = cpu_to_le32(mode);
ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
sizeof(tmp));
if (ret != 0) {
devwarn(usbdev, "setting infra mode failed (%08X)", 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;
devdbg(usbdev, "set_rts_threshold %i", 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;
devdbg(usbdev, "set_frag_threshold %i", 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)
{
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
priv->wpa_keymgmt = 0;
priv->wpa_version = 0;
set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
set_auth_mode(usbdev, IW_AUTH_WPA_VERSION_DISABLED,
IW_AUTH_ALG_OPEN_SYSTEM);
set_priv_filter(usbdev);
set_encr_mode(usbdev, IW_AUTH_CIPHER_NONE, IW_AUTH_CIPHER_NONE);
}
static int deauthenticate(struct usbnet *usbdev)
{
int ret;
ret = disassociate(usbdev, 1);
set_default_iw_params(usbdev);
return ret;
}
/* index must be 0 - N, as per NDIS */
static int add_wep_key(struct usbnet *usbdev, char *key, int key_len, int index)
{
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
struct ndis_80211_wep_key ndis_key;
int cipher, ret;
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, IW_AUTH_CIPHER_WEP104,
IW_AUTH_CIPHER_NONE);
if (ret)
devwarn(usbdev, "encryption couldn't be enabled (%08X)",
ret);
}
ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
sizeof(ndis_key));
if (ret != 0) {
devwarn(usbdev, "adding encryption key %d failed (%08X)",
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 cipher,
int 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) {
devdbg(usbdev, "add_wpa_key: index out of range (%i)", index);
return -EINVAL;
}
if (key_len > sizeof(ndis_key.material) || key_len < 0) {
devdbg(usbdev, "add_wpa_key: key length out of range (%i)",
key_len);
return -EINVAL;
}
if ((flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) && !rx_seq) {
devdbg(usbdev, "add_wpa_key: recv seq flag without buffer");
return -EINVAL;
}
is_addr_ok = addr && memcmp(addr, zero_bssid, ETH_ALEN) != 0 &&
memcmp(addr, ffff_bssid, ETH_ALEN) != 0;
if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
devdbg(usbdev, "add_wpa_key: pairwise but bssid invalid (%pM)",
addr);
return -EINVAL;
}
devdbg(usbdev, "add_wpa_key(%i): flags:%i%i%i", 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, 6);
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));
devdbg(usbdev, "add_wpa_key: OID_802_11_ADD_KEY -> %08X", 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;
int flags;
key = priv->encr_keys[key_idx];
devdbg(usbdev, "restore_key: %i:%s:%i", key_idx,
is_wpa_key(priv, key_idx) ? "wpa" : "wep",
key.len);
if (key.len == 0)
return 0;
if (is_wpa_key(priv, key_idx)) {
flags = 0;
/*if (priv->encr_tx_key_index == key_idx)
flags |= NDIS_80211_ADDKEY_TRANSMIT_KEY;*/
if (memcmp(key.bssid, zero_bssid, ETH_ALEN) != 0 &&
memcmp(key.bssid, ffff_bssid, ETH_ALEN) != 0)
flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY;
return add_wpa_key(usbdev, key.material, key.len, key_idx,
key.bssid, NULL, key.cipher, flags);
}
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, u8 bssid[ETH_ALEN])
{
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);
devdbg(usbdev, "remove_key: %i:%s:%i", 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 (memcmp(bssid, ffff_bssid, ETH_ALEN) != 0)
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) {
devwarn(usbdev,
"removing encryption key %d failed (%08X)",
index, ret);
return ret;
}
}
/* if it is transmit key, disable encryption */
if (index == priv->encr_tx_key_index)
set_encr_mode(usbdev, IW_AUTH_CIPHER_NONE, IW_AUTH_CIPHER_NONE);
return 0;
}
static void set_multicast_list(struct usbnet *usbdev)
{
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
struct dev_mc_list *mclist;
__le32 filter;
int ret, i, size;
char *buf;
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 ||
usbdev->net->mc_count > priv->multicast_size) {
filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
} else if (usbdev->net->mc_count > 0) {
size = min(priv->multicast_size, usbdev->net->mc_count);
buf = kmalloc(size * ETH_ALEN, GFP_KERNEL);
if (!buf) {
devwarn(usbdev,
"couldn't alloc %d bytes of memory",
size * ETH_ALEN);
return;
}
mclist = usbdev->net->mc_list;
for (i = 0; i < size && mclist; mclist = mclist->next) {
if (mclist->dmi_addrlen != ETH_ALEN)
continue;
memcpy(buf + i * ETH_ALEN, mclist->dmi_addr, ETH_ALEN);
i++;
}
ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, buf,
i * ETH_ALEN);
if (ret == 0 && i > 0)
filter |= RNDIS_PACKET_TYPE_MULTICAST;
else
filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
devdbg(usbdev, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d",
i, priv->multicast_size, ret);
kfree(buf);
}
ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
sizeof(filter));
if (ret < 0) {
devwarn(usbdev, "couldn't set packet filter: %08x",
le32_to_cpu(filter));
}
devdbg(usbdev, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d",
le32_to_cpu(filter), ret);
}
/*
* 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 usbnet *usbdev = netdev_priv(dev);
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;
}
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 tx_power_setting type,
int dbm)
{
struct rndis_wlan_private *priv = wiphy_priv(wiphy);
struct usbnet *usbdev = priv->usbdev;
devdbg(usbdev, "rndis_set_tx_power type:0x%x dbm:%i", type, dbm);
/* 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 == TX_POWER_AUTOMATIC || dbm == get_bcm4320_power_dbm(priv)) {
if (!priv->radio_on)
disassociate(usbdev, 1); /* 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);
devdbg(usbdev, "rndis_get_tx_power dbm:%i", *dbm);
return 0;
}
#define SCAN_DELAY_JIFFIES (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;
devdbg(usbdev, "cfg80211.scan");
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;
/* 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;
devdbg(usbdev, "check_bssid_list");
len = CONTROL_BUFFER_SIZE;
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;
bssid_list = buf;
bssid = bssid_list->bssid;
bssid_len = le32_to_cpu(bssid->length);
count = le32_to_cpu(bssid_list->num_items);
devdbg(usbdev, "check_bssid_list: %d BSSIDs found", count);
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;
devdbg(usbdev, "get_scan_results");
if (!priv->scan_request)
return;
ret = rndis_check_bssid_list(usbdev);
cfg80211_scan_done(priv->scan_request, ret < 0);
priv->scan_request = NULL;
}
/*
* wireless extension handlers
*/
static int rndis_iw_commit(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
/* dummy op */
return 0;
}
static int rndis_iw_set_essid(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *essid)
{
struct ndis_80211_ssid ssid;
int length = wrqu->essid.length;
struct usbnet *usbdev = netdev_priv(dev);
devdbg(usbdev, "SIOCSIWESSID: [flags:%d,len:%d] '%.32s'",
wrqu->essid.flags, wrqu->essid.length, essid);
if (length > NDIS_802_11_LENGTH_SSID)
length = NDIS_802_11_LENGTH_SSID;
ssid.length = cpu_to_le32(length);
if (length > 0)
memcpy(ssid.essid, essid, length);
else
memset(ssid.essid, 0, NDIS_802_11_LENGTH_SSID);
set_assoc_params(usbdev);
if (!wrqu->essid.flags || length == 0)
return disassociate(usbdev, 1);
else {
/* Pause and purge rx queue, so we don't pass packets before
* 'media connect'-indication.
*/
usbnet_pause_rx(usbdev);
usbnet_purge_paused_rxq(usbdev);
return set_essid(usbdev, &ssid);
}
}
static int rndis_iw_get_essid(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *essid)
{
struct ndis_80211_ssid ssid;
struct usbnet *usbdev = netdev_priv(dev);
int ret;
ret = get_essid(usbdev, &ssid);
if (ret == 0 && le32_to_cpu(ssid.length) > 0) {
wrqu->essid.flags = 1;
wrqu->essid.length = le32_to_cpu(ssid.length);
memcpy(essid, ssid.essid, wrqu->essid.length);
essid[wrqu->essid.length] = 0;
} else {
memset(essid, 0, sizeof(NDIS_802_11_LENGTH_SSID));
wrqu->essid.flags = 0;
wrqu->essid.length = 0;
}
devdbg(usbdev, "SIOCGIWESSID: %s", essid);
return ret;
}
static int rndis_iw_get_bssid(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
struct usbnet *usbdev = netdev_priv(dev);
unsigned char bssid[ETH_ALEN];
int ret;
ret = get_bssid(usbdev, bssid);
if (ret == 0)
devdbg(usbdev, "SIOCGIWAP: %pM", bssid);
else
devdbg(usbdev, "SIOCGIWAP: <not associated>");
wrqu->ap_addr.sa_family = ARPHRD_ETHER;
memcpy(wrqu->ap_addr.sa_data, bssid, ETH_ALEN);
return ret;
}
static int rndis_iw_set_bssid(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
struct usbnet *usbdev = netdev_priv(dev);
u8 *bssid = (u8 *)wrqu->ap_addr.sa_data;
int ret;
devdbg(usbdev, "SIOCSIWAP: %pM", bssid);
ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
/* user apps may set ap's mac address, which is not required;
* they may fail to work if this function fails, so return
* success */
if (ret)
devwarn(usbdev, "setting AP mac address failed (%08X)", ret);
return 0;
}
static int rndis_iw_set_auth(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
struct iw_param *p = &wrqu->param;
struct usbnet *usbdev = netdev_priv(dev);
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
int ret = -ENOTSUPP;
switch (p->flags & IW_AUTH_INDEX) {
case IW_AUTH_WPA_VERSION:
devdbg(usbdev, "SIOCSIWAUTH: WPA_VERSION, %08x", p->value);
priv->wpa_version = p->value;
ret = 0;
break;
case IW_AUTH_CIPHER_PAIRWISE:
devdbg(usbdev, "SIOCSIWAUTH: CIPHER_PAIRWISE, %08x", p->value);
priv->wpa_cipher_pair = p->value;
ret = 0;
break;
case IW_AUTH_CIPHER_GROUP:
devdbg(usbdev, "SIOCSIWAUTH: CIPHER_GROUP, %08x", p->value);
priv->wpa_cipher_group = p->value;
ret = 0;
break;
case IW_AUTH_KEY_MGMT:
devdbg(usbdev, "SIOCSIWAUTH: KEY_MGMT, %08x", p->value);
priv->wpa_keymgmt = p->value;
ret = 0;
break;
case IW_AUTH_TKIP_COUNTERMEASURES:
devdbg(usbdev, "SIOCSIWAUTH: TKIP_COUNTERMEASURES, %08x",
p->value);
ret = 0;
break;
case IW_AUTH_DROP_UNENCRYPTED:
devdbg(usbdev, "SIOCSIWAUTH: DROP_UNENCRYPTED, %08x", p->value);
ret = 0;
break;
case IW_AUTH_80211_AUTH_ALG:
devdbg(usbdev, "SIOCSIWAUTH: 80211_AUTH_ALG, %08x", p->value);
priv->wpa_authalg = p->value;
ret = 0;
break;
case IW_AUTH_WPA_ENABLED:
devdbg(usbdev, "SIOCSIWAUTH: WPA_ENABLED, %08x", p->value);
if (wrqu->param.value)
deauthenticate(usbdev);
ret = 0;
break;
case IW_AUTH_RX_UNENCRYPTED_EAPOL:
devdbg(usbdev, "SIOCSIWAUTH: RX_UNENCRYPTED_EAPOL, %08x",
p->value);
ret = 0;
break;
case IW_AUTH_ROAMING_CONTROL:
devdbg(usbdev, "SIOCSIWAUTH: ROAMING_CONTROL, %08x", p->value);
ret = 0;
break;
case IW_AUTH_PRIVACY_INVOKED:
devdbg(usbdev, "SIOCSIWAUTH: invalid cmd %d",
wrqu->param.flags & IW_AUTH_INDEX);
return -EOPNOTSUPP;
default:
devdbg(usbdev, "SIOCSIWAUTH: UNKNOWN %08x, %08x",
p->flags & IW_AUTH_INDEX, p->value);
}
return ret;
}
static int rndis_iw_get_auth(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
struct iw_param *p = &wrqu->param;
struct usbnet *usbdev = netdev_priv(dev);
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
switch (p->flags & IW_AUTH_INDEX) {
case IW_AUTH_WPA_VERSION:
p->value = priv->wpa_version;
break;
case IW_AUTH_CIPHER_PAIRWISE:
p->value = priv->wpa_cipher_pair;
break;
case IW_AUTH_CIPHER_GROUP:
p->value = priv->wpa_cipher_group;
break;
case IW_AUTH_KEY_MGMT:
p->value = priv->wpa_keymgmt;
break;
case IW_AUTH_80211_AUTH_ALG:
p->value = priv->wpa_authalg;
break;
default:
devdbg(usbdev, "SIOCGIWAUTH: invalid cmd %d",
wrqu->param.flags & IW_AUTH_INDEX);
return -EOPNOTSUPP;
}
return 0;
}
static int rndis_iw_set_encode(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
struct usbnet *usbdev = netdev_priv(dev);
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
struct rndis_wlan_encr_key key;
int ret, index, key_len;
u8 *keybuf;
index = (wrqu->encoding.flags & IW_ENCODE_INDEX);
/* iwconfig gives index as 1 - N */
if (index > 0)
index--;
else
index = priv->encr_tx_key_index;
if (index < 0 || index >= 4) {
devwarn(usbdev, "encryption index out of range (%u)", index);
return -EINVAL;
}
/* remove key if disabled */
if (wrqu->data.flags & IW_ENCODE_DISABLED) {
if (remove_key(usbdev, index, NULL))
return -EINVAL;
else
return 0;
}
/* global encryption state (for all keys) */
if (wrqu->data.flags & IW_ENCODE_OPEN)
ret = set_auth_mode(usbdev, IW_AUTH_WPA_VERSION_DISABLED,
IW_AUTH_ALG_OPEN_SYSTEM);
else /*if (wrqu->data.flags & IW_ENCODE_RESTRICTED)*/
ret = set_auth_mode(usbdev, IW_AUTH_WPA_VERSION_DISABLED,
IW_AUTH_ALG_SHARED_KEY);
if (ret != 0)
return ret;
if (wrqu->data.length > 0) {
key_len = wrqu->data.length;
keybuf = extra;
} else {
/* must be set as tx key */
if (priv->encr_keys[index].len == 0)
return -EINVAL;
key = priv->encr_keys[index];
key_len = key.len;
keybuf = key.material;
priv->encr_tx_key_index = index;
}
if (add_wep_key(usbdev, keybuf, key_len, index) != 0)
return -EINVAL;
if (index == priv->encr_tx_key_index)
/* ndis drivers want essid to be set after setting encr */
set_essid(usbdev, &priv->essid);
return 0;
}
static int rndis_iw_set_encode_ext(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
struct usbnet *usbdev = netdev_priv(dev);
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
int keyidx, flags, cipher;
keyidx = wrqu->encoding.flags & IW_ENCODE_INDEX;
/* iwconfig gives index as 1 - N */
if (keyidx)
keyidx--;
else
keyidx = priv->encr_tx_key_index;
if (keyidx < 0 || keyidx >= 4) {
devwarn(usbdev, "encryption index out of range (%u)", keyidx);
return -EINVAL;
}
if (ext->alg == WPA_ALG_WEP) {
if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY)
priv->encr_tx_key_index = keyidx;
return add_wep_key(usbdev, ext->key, ext->key_len, keyidx);
}
cipher = -1;
if (ext->alg == IW_ENCODE_ALG_TKIP)
cipher = WLAN_CIPHER_SUITE_TKIP;
else if (ext->alg == IW_ENCODE_ALG_CCMP)
cipher = WLAN_CIPHER_SUITE_CCMP;
if ((wrqu->encoding.flags & IW_ENCODE_DISABLED) ||
ext->alg == IW_ENCODE_ALG_NONE || ext->key_len == 0)
return remove_key(usbdev, keyidx, NULL);
if (cipher == -1)
return -EOPNOTSUPP;
flags = 0;
if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID)
flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
if (!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY))
flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY;
if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY)
flags |= NDIS_80211_ADDKEY_TRANSMIT_KEY;
return add_wpa_key(usbdev, ext->key, ext->key_len, keyidx,
(u8 *)&ext->addr.sa_data, ext->rx_seq, cipher,
flags);
}
static int rndis_iw_set_genie(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
struct usbnet *usbdev = netdev_priv(dev);
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
int ret = 0;
#ifdef DEBUG
int j;
u8 *gie = extra;
for (j = 0; j < wrqu->data.length; j += 8)
devdbg(usbdev,
"SIOCSIWGENIE %04x - "
"%02x %02x %02x %02x %02x %02x %02x %02x", j,
gie[j + 0], gie[j + 1], gie[j + 2], gie[j + 3],
gie[j + 4], gie[j + 5], gie[j + 6], gie[j + 7]);
#endif
/* clear existing IEs */
if (priv->wpa_ie_len) {
kfree(priv->wpa_ie);
priv->wpa_ie_len = 0;
}
/* set new IEs */
priv->wpa_ie = kmalloc(wrqu->data.length, GFP_KERNEL);
if (priv->wpa_ie) {
priv->wpa_ie_len = wrqu->data.length;
memcpy(priv->wpa_ie, extra, priv->wpa_ie_len);
} else
ret = -ENOMEM;
return ret;
}
static int rndis_iw_get_genie(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
struct usbnet *usbdev = netdev_priv(dev);
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
devdbg(usbdev, "SIOCGIWGENIE");
if (priv->wpa_ie_len == 0 || priv->wpa_ie == NULL) {
wrqu->data.length = 0;
return 0;
}
if (wrqu->data.length < priv->wpa_ie_len)
return -E2BIG;
wrqu->data.length = priv->wpa_ie_len;
memcpy(extra, priv->wpa_ie, priv->wpa_ie_len);
return 0;
}
static int rndis_iw_set_freq(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
struct usbnet *usbdev = netdev_priv(dev);
struct ndis_80211_conf config;
unsigned int dsconfig;
int len, ret;
/* this OID is valid only when not associated */
if (is_associated(usbdev))
return 0;
dsconfig = 0;
if (freq_to_dsconfig(&wrqu->freq, &dsconfig))
return -EINVAL;
len = sizeof(config);
ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
if (ret != 0) {
devdbg(usbdev, "SIOCSIWFREQ: querying configuration failed");
return 0;
}
config.ds_config = cpu_to_le32(dsconfig);
devdbg(usbdev, "SIOCSIWFREQ: %d * 10^%d", wrqu->freq.m, wrqu->freq.e);
return rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
sizeof(config));
}
static int rndis_iw_get_freq(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
struct usbnet *usbdev = netdev_priv(dev);
struct ndis_80211_conf config;
int len, ret;
len = sizeof(config);
ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
if (ret == 0)
dsconfig_to_freq(le32_to_cpu(config.ds_config), &wrqu->freq);
devdbg(usbdev, "SIOCGIWFREQ: %d", wrqu->freq.m);
return ret;
}
static int rndis_iw_get_rate(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
struct usbnet *usbdev = netdev_priv(dev);
__le32 tmp;
int ret, len;
len = sizeof(tmp);
ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &tmp, &len);
if (ret == 0) {
wrqu->bitrate.value = le32_to_cpu(tmp) * 100;
wrqu->bitrate.disabled = 0;
wrqu->bitrate.flags = 1;
}
return ret;
}
static int rndis_iw_set_mlme(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
struct usbnet *usbdev = netdev_priv(dev);
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
struct iw_mlme *mlme = (struct iw_mlme *)extra;
unsigned char bssid[ETH_ALEN];
get_bssid(usbdev, bssid);
if (memcmp(bssid, mlme->addr.sa_data, ETH_ALEN))
return -EINVAL;
switch (mlme->cmd) {
case IW_MLME_DEAUTH:
return deauthenticate(usbdev);
case IW_MLME_DISASSOC:
return disassociate(usbdev, priv->radio_on);
default:
return -EOPNOTSUPP;
}
return 0;
}
static struct iw_statistics *rndis_get_wireless_stats(struct net_device *dev)
{
struct usbnet *usbdev = netdev_priv(dev);
struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
unsigned long flags;
spin_lock_irqsave(&priv->stats_lock, flags);
memcpy(&priv->iwstats, &priv->privstats, sizeof(priv->iwstats));
spin_unlock_irqrestore(&priv->stats_lock, flags);
return &priv->iwstats;
}
#define IW_IOCTL(x) [(x) - SIOCSIWCOMMIT]
static const iw_handler rndis_iw_handler[] =
{
IW_IOCTL(SIOCSIWCOMMIT) = rndis_iw_commit,
IW_IOCTL(SIOCGIWNAME) = (iw_handler) cfg80211_wext_giwname,
IW_IOCTL(SIOCSIWFREQ) = rndis_iw_set_freq,
IW_IOCTL(SIOCGIWFREQ) = rndis_iw_get_freq,
IW_IOCTL(SIOCSIWMODE) = (iw_handler) cfg80211_wext_siwmode,
IW_IOCTL(SIOCGIWMODE) = (iw_handler) cfg80211_wext_giwmode,
IW_IOCTL(SIOCGIWRANGE) = (iw_handler) cfg80211_wext_giwrange,
IW_IOCTL(SIOCSIWAP) = rndis_iw_set_bssid,
IW_IOCTL(SIOCGIWAP) = rndis_iw_get_bssid,
IW_IOCTL(SIOCSIWSCAN) = (iw_handler) cfg80211_wext_siwscan,
IW_IOCTL(SIOCGIWSCAN) = (iw_handler) cfg80211_wext_giwscan,
IW_IOCTL(SIOCSIWESSID) = rndis_iw_set_essid,
IW_IOCTL(SIOCGIWESSID) = rndis_iw_get_essid,
IW_IOCTL(SIOCGIWRATE) = rndis_iw_get_rate,
IW_IOCTL(SIOCSIWRTS) = (iw_handler) cfg80211_wext_siwrts,
IW_IOCTL(SIOCGIWRTS) = (iw_handler) cfg80211_wext_giwrts,
IW_IOCTL(SIOCSIWFRAG) = (iw_handler) cfg80211_wext_siwfrag,
IW_IOCTL(SIOCGIWFRAG) = (iw_handler) cfg80211_wext_giwfrag,
IW_IOCTL(SIOCSIWTXPOW) = (iw_handler) cfg80211_wext_siwtxpower,
IW_IOCTL(SIOCGIWTXPOW) = (iw_handler) cfg80211_wext_giwtxpower,
IW_IOCTL(SIOCSIWENCODE) = rndis_iw_set_encode,
IW_IOCTL(SIOCSIWENCODEEXT) = rndis_iw_set_encode_ext,
IW_IOCTL(SIOCSIWAUTH) = rndis_iw_set_auth,
IW_IOCTL(SIOCGIWAUTH) = rndis_iw_get_auth,
IW_IOCTL(SIOCSIWGENIE) = rndis_iw_set_genie,
IW_IOCTL(SIOCGIWGENIE) = rndis_iw_get_genie,
IW_IOCTL(SIOCSIWMLME) = rndis_iw_set_mlme,
};
static const iw_handler rndis_wlan_private_handler[] = {
};
static const struct iw_priv_args rndis_wlan_private_args[] = {
};
static const struct iw_handler_def rndis_iw_handlers = {
.num_standard = ARRAY_SIZE(rndis_iw_handler),
.num_private = ARRAY_SIZE(rndis_wlan_private_handler),
.num_private_args = ARRAY_SIZE(rndis_wlan_private_args),
.standard = (iw_handler *)rndis_iw_handler,
.private = (iw_handler *)rndis_wlan_private_handler,
.private_args = (struct iw_priv_args *)rndis_wlan_private_args,
.get_wireless_stats = rndis_get_wireless_stats,
};
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;
union iwreq_data evt;
unsigned char bssid[ETH_ALEN];
struct ndis_80211_assoc_info *info;
int assoc_size = sizeof(*info) + IW_CUSTOM_MAX + 32;
int ret, offset;
if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending)) {
netif_carrier_on(usbdev->net);
info = kzalloc(assoc_size, GFP_KERNEL);
if (!info)
goto get_bssid;
/* Get association info IEs from device and send them back to
* userspace. */
ret = get_association_info(usbdev, info, assoc_size);
if (!ret) {
evt.data.length = le32_to_cpu(info->req_ie_length);
if (evt.data.length > 0) {
offset = le32_to_cpu(info->offset_req_ies);
wireless_send_event(usbdev->net,
IWEVASSOCREQIE, &evt,
(char *)info + offset);
}
evt.data.length = le32_to_cpu(info->resp_ie_length);
if (evt.data.length > 0) {
offset = le32_to_cpu(info->offset_resp_ies);
wireless_send_event(usbdev->net,
IWEVASSOCRESPIE, &evt,
(char *)info + offset);
}
}
kfree(info);
get_bssid:
ret = get_bssid(usbdev, bssid);
if (!ret) {
evt.data.flags = 0;
evt.data.length = 0;
memcpy(evt.ap_addr.sa_data, bssid, ETH_ALEN);
wireless_send_event(usbdev->net, SIOCGIWAP, &evt, NULL);
}
usbnet_resume_rx(usbdev);
}
if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending)) {
netif_carrier_off(usbdev->net);
evt.data.flags = 0;
evt.data.length = 0;
memset(evt.ap_addr.sa_data, 0, ETH_ALEN);
wireless_send_event(usbdev->net, SIOCGIWAP, &evt, NULL);
}
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;
bool pairwise_error, group_error;
struct ndis_80211_auth_request *auth_req;
/* must have at least one array entry */
if (len < offsetof(struct ndis_80211_status_indication, u) +
sizeof(struct ndis_80211_auth_request)) {
devinfo(usbdev, "authentication indication: "
"too short message (%i)", 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";
}
devinfo(usbdev, "authentication indication: %s (0x%08x)", type,
le32_to_cpu(auth_req->flags));
if (pairwise_error || group_error) {
union iwreq_data wrqu;
struct iw_michaelmicfailure micfailure;
memset(&micfailure, 0, sizeof(micfailure));
if (pairwise_error)
micfailure.flags |= IW_MICFAILURE_PAIRWISE;
if (group_error)
micfailure.flags |= IW_MICFAILURE_GROUP;
memcpy(micfailure.src_addr.sa_data, auth_req->bssid,
ETH_ALEN);
memset(&wrqu, 0, sizeof(wrqu));
wrqu.data.length = sizeof(micfailure);
wireless_send_event(usbdev->net, IWEVMICHAELMICFAILURE,
&wrqu, (u8 *)&micfailure);
}
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)) {
devinfo(usbdev, "pmkid candidate list indication: "
"too short message (%i)", 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) {
devinfo(usbdev, "pmkid candidate list indication: "
"list larger than buffer (%i < %i)",
len, expected_len);
return;
}
cand_list = &indication->u.cand_list;
devinfo(usbdev, "pmkid candidate list indication: "
"version %i, candidates %i",
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 iw_pmkid_cand pcand;
union iwreq_data wrqu;
struct ndis_80211_pmkid_candidate *cand =
&cand_list->candidate_list[i];
devdbg(usbdev, "cand[%i]: flags: 0x%08x, bssid: %pM",
i, le32_to_cpu(cand->flags), cand->bssid);
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);
}
}
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) {
devinfo(usbdev, "media specific indication, "
"ignore too short message (%i < 8)", len);
return;
}
if (offset + len > buflen) {
devinfo(usbdev, "media specific indication, "
"too large to fit to buffer (%i > %i)",
offset + len, buflen);
return;
}
indication = (void *)((u8 *)msg + offset);
switch (le32_to_cpu(indication->status_type)) {
case NDIS_80211_STATUSTYPE_RADIOSTATE:
devinfo(usbdev, "radio state indication: %i",
le32_to_cpu(indication->u.radio_status));
return;
case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
devinfo(usbdev, "media stream mode indication: %i",
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:
devinfo(usbdev, "media specific indication: "
"unknown status type 0x%08x",
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:
usbnet_pause_rx(usbdev);
devinfo(usbdev, "media connect");
/* 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:
devinfo(usbdev, "media disconnect");
/* 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:
devinfo(usbdev, "indication: 0x%08x",
le32_to_cpu(msg->status));
break;
}
}
static int rndis_wlan_get_caps(struct usbnet *usbdev)
{
struct {
__le32 num_items;
__le32 items[8];
} networks_supported;
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;
}
}
}
return retval;
}
#define STATS_UPDATE_JIFFIES (HZ)
static void rndis_update_wireless_stats(struct work_struct *work)
{
struct rndis_wlan_private *priv =
container_of(work, struct rndis_wlan_private, stats_work.work);
struct usbnet *usbdev = priv->usbdev;
struct iw_statistics iwstats;
__le32 rssi, tmp;
int len, ret, j;
unsigned long flags;
int update_jiffies = STATS_UPDATE_JIFFIES;
void *buf;
spin_lock_irqsave(&priv->stats_lock, flags);
memcpy(&iwstats, &priv->privstats, sizeof(iwstats));
spin_unlock_irqrestore(&priv->stats_lock, flags);
/* only update stats when connected */
if (!is_associated(usbdev)) {
iwstats.qual.qual = 0;
iwstats.qual.level = 0;
iwstats.qual.updated = IW_QUAL_QUAL_UPDATED
| IW_QUAL_LEVEL_UPDATED
| IW_QUAL_NOISE_INVALID
| IW_QUAL_QUAL_INVALID
| IW_QUAL_LEVEL_INVALID;
goto end;
}
len = sizeof(rssi);
ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
devdbg(usbdev, "stats: OID_802_11_RSSI -> %d, rssi:%d", ret,
le32_to_cpu(rssi));
if (ret == 0) {
memset(&iwstats.qual, 0, sizeof(iwstats.qual));
iwstats.qual.qual = level_to_qual(le32_to_cpu(rssi));
iwstats.qual.level = level_to_qual(le32_to_cpu(rssi));
iwstats.qual.updated = IW_QUAL_QUAL_UPDATED
| IW_QUAL_LEVEL_UPDATED
| IW_QUAL_NOISE_INVALID;
}
memset(&iwstats.discard, 0, sizeof(iwstats.discard));
len = sizeof(tmp);
ret = rndis_query_oid(usbdev, OID_GEN_XMIT_ERROR, &tmp, &len);
if (ret == 0)
iwstats.discard.misc += le32_to_cpu(tmp);
len = sizeof(tmp);
ret = rndis_query_oid(usbdev, OID_GEN_RCV_ERROR, &tmp, &len);
if (ret == 0)
iwstats.discard.misc += le32_to_cpu(tmp);
len = sizeof(tmp);
ret = rndis_query_oid(usbdev, OID_GEN_RCV_NO_BUFFER, &tmp, &len);
if (ret == 0)
iwstats.discard.misc += le32_to_cpu(tmp);
/* 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 (iwstats.qual.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 > STATS_UPDATE_JIFFIES)
j = STATS_UPDATE_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:
spin_lock_irqsave(&priv->stats_lock, flags);
memcpy(&priv->privstats, &iwstats, sizeof(iwstats));
spin_unlock_irqrestore(&priv->stats_lock, flags);
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->stats_work, update_jiffies);
}
static int bcm4320a_early_init(struct usbnet *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];
/* Early initialization settings, setting these won't have effect
* if called after generic_rndis_bind().
*/
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;
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;
usbdev->net->wireless_handlers = &rndis_iw_handlers;
priv->usbdev = usbdev;
mutex_init(&priv->command_lock);
spin_lock_init(&priv->stats_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->stats_work, rndis_update_wireless_stats);
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;
priv->iwstats.qual.qual = 0;
priv->iwstats.qual.level = 0;
priv->iwstats.qual.updated = IW_QUAL_QUAL_UPDATED
| IW_QUAL_LEVEL_UPDATED
| IW_QUAL_NOISE_INVALID
| IW_QUAL_QUAL_INVALID
| IW_QUAL_LEVEL_INVALID;
/* 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 information based on priv->caps */
rndis_wlan_get_caps(usbdev);
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;
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 = 1;
disassociate(usbdev, 1);
netif_carrier_off(usbdev->net);
return 0;
fail:
cancel_delayed_work_sync(&priv->stats_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, 0);
cancel_delayed_work_sync(&priv->stats_work);
cancel_delayed_work_sync(&priv->scan_work);
cancel_work_sync(&priv->work);
flush_workqueue(priv->workqueue);
destroy_workqueue(priv->workqueue);
if (priv && priv->wpa_ie_len)
kfree(priv->wpa_ie);
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;
devdbg(usbdev, "rndis_wlan_reset");
retval = rndis_reset(usbdev);
if (retval)
devwarn(usbdev, "rndis_reset() failed: %d", 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->stats_work,
round_jiffies_relative(STATS_UPDATE_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;
devdbg(usbdev, "rndis_wlan_stop");
retval = disassociate(usbdev, 0);
priv->work_pending = 0;
cancel_delayed_work_sync(&priv->stats_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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