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rndis_wlan: convert set/get txpower to cfg80211
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Convert set/get txpower to cfg80211 and add stop netdev handler to turn off
radio for rfkill.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Jussi Kivilinna authored and John W. Linville committed Jul 10, 2009
1 parent a33e9e7 commit 222ec50
Showing 1 changed file with 75 additions and 73 deletions.
148 changes: 75 additions & 73 deletions drivers/net/wireless/rndis_wlan.c
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Original file line number Diff line number Diff line change
Expand Up @@ -139,9 +139,15 @@ MODULE_PARM_DESC(workaround_interval,
/* 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.
* 13dBm == 19.9mW
* 100% : 20 mW ~ 13dBm
* 75% : 15 mW ~ 12dBm
* 50% : 10 mW ~ 10dBm
* 25% : 5 mW ~ 7dBm
*/
#define BCM4320_DEFAULT_TXPOWER 20
#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 */
Expand Down Expand Up @@ -430,15 +436,20 @@ static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,

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 int bcm4320_power_output[4] = { 25, 50, 75, 100 };

static const unsigned char zero_bssid[ETH_ALEN] = {0,};
static const unsigned char ffff_bssid[ETH_ALEN] = { 0xff, 0xff, 0xff,
Expand All @@ -451,10 +462,19 @@ static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
}


static u32 get_bcm4320_power(struct rndis_wlan_private *priv)
static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
{
return BCM4320_DEFAULT_TXPOWER *
bcm4320_power_output[priv->param_power_output] / 100;
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;
}
}


Expand Down Expand Up @@ -1301,6 +1321,42 @@ 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)
{
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)
Expand Down Expand Up @@ -1864,71 +1920,6 @@ static int rndis_iw_get_freq(struct net_device *dev,
}


static int rndis_iw_get_txpower(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);
__le32 tx_power;

if (priv->radio_on) {
/* fake since changing tx_power (by userlevel) not supported */
tx_power = cpu_to_le32(get_bcm4320_power(priv));

wrqu->txpower.flags = IW_TXPOW_MWATT;
wrqu->txpower.value = le32_to_cpu(tx_power);
wrqu->txpower.disabled = 0;
} else {
wrqu->txpower.flags = IW_TXPOW_MWATT;
wrqu->txpower.value = 0;
wrqu->txpower.disabled = 1;
}

devdbg(usbdev, "SIOCGIWTXPOW: %d", wrqu->txpower.value);

return 0;
}


static int rndis_iw_set_txpower(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);
__le32 tx_power = 0;

if (!wrqu->txpower.disabled) {
if (wrqu->txpower.flags == IW_TXPOW_MWATT)
tx_power = cpu_to_le32(wrqu->txpower.value);
else { /* wrqu->txpower.flags == IW_TXPOW_DBM */
if (wrqu->txpower.value > 20)
tx_power = cpu_to_le32(128);
else if (wrqu->txpower.value < -43)
tx_power = cpu_to_le32(127);
else {
signed char tmp;
tmp = wrqu->txpower.value;
tmp = -12 - tmp;
tmp <<= 2;
tx_power = cpu_to_le32((unsigned char)tmp);
}
}
}

devdbg(usbdev, "SIOCSIWTXPOW: %d", le32_to_cpu(tx_power));

if (le32_to_cpu(tx_power) != 0) {
/* txpower unsupported, just turn radio on */
if (!priv->radio_on)
return disassociate(usbdev, 1);
return 0; /* all ready on */
}

/* tx_power == 0, turn off radio */
return disassociate(usbdev, 0);
}


static int rndis_iw_get_rate(struct net_device *dev,
struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
Expand Down Expand Up @@ -2008,8 +1999,8 @@ static const iw_handler rndis_iw_handler[] =
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) = rndis_iw_set_txpower,
IW_IOCTL(SIOCGIWTXPOW) = rndis_iw_get_txpower,
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,
Expand Down Expand Up @@ -2508,10 +2499,18 @@ static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)

static int rndis_wlan_reset(struct usbnet *usbdev)
{
devdbg(usbdev, "rndis_wlan_reset");
return deauthenticate(usbdev);
}


static int rndis_wlan_stop(struct usbnet *usbdev)
{
devdbg(usbdev, "rndis_wlan_stop");
return disassociate(usbdev, 0);
}


static const struct driver_info bcm4320b_info = {
.description = "Wireless RNDIS device, BCM4320b based",
.flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT,
Expand All @@ -2521,6 +2520,7 @@ static const struct driver_info bcm4320b_info = {
.rx_fixup = rndis_rx_fixup,
.tx_fixup = rndis_tx_fixup,
.reset = rndis_wlan_reset,
.stop = rndis_wlan_stop,
.early_init = bcm4320b_early_init,
.link_change = rndis_wlan_link_change,
};
Expand All @@ -2534,6 +2534,7 @@ static const struct driver_info bcm4320a_info = {
.rx_fixup = rndis_rx_fixup,
.tx_fixup = rndis_tx_fixup,
.reset = rndis_wlan_reset,
.stop = rndis_wlan_stop,
.early_init = bcm4320a_early_init,
.link_change = rndis_wlan_link_change,
};
Expand All @@ -2547,6 +2548,7 @@ static const struct driver_info rndis_wlan_info = {
.rx_fixup = rndis_rx_fixup,
.tx_fixup = rndis_tx_fixup,
.reset = rndis_wlan_reset,
.stop = rndis_wlan_stop,
.early_init = bcm4320a_early_init,
.link_change = rndis_wlan_link_change,
};
Expand Down

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