diff options
| -rw-r--r-- | drivers/net/wireless/rndis_wlan.c | 67 |
1 files changed, 56 insertions, 11 deletions
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c index 0a423c49aab..8a77ff68590 100644 --- a/drivers/net/wireless/rndis_wlan.c +++ b/drivers/net/wireless/rndis_wlan.c @@ -156,6 +156,12 @@ MODULE_PARM_DESC(workaround_interval, #define RNDIS_STATUS_ADAPTER_NOT_OPEN cpu_to_le32(0xc0010012) +/* Known device types */ +#define RNDIS_UNKNOWN 0 +#define RNDIS_BCM4320A 1 +#define RNDIS_BCM4320B 2 + + /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c * slightly modified for datatype endianess, etc */ @@ -478,6 +484,7 @@ struct rndis_wlan_private { struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)]; u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)]; + int device_type; int caps; int multicast_size; @@ -997,6 +1004,16 @@ static void restore_keys(struct usbnet *usbdev); static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid, bool *matched); +static int rndis_start_bssid_list_scan(struct usbnet *usbdev) +{ + __le32 tmp; + + /* Note: OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */ + tmp = cpu_to_le32(1); + return rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp, + sizeof(tmp)); +} + static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid) { struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); @@ -1905,7 +1922,7 @@ static int rndis_scan(struct wiphy *wiphy, struct net_device *dev, struct usbnet *usbdev = netdev_priv(dev); struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); int ret; - __le32 tmp; + int delay = SCAN_DELAY_JIFFIES; netdev_dbg(usbdev->net, "cfg80211.scan\n"); @@ -1922,13 +1939,13 @@ static int rndis_scan(struct wiphy *wiphy, struct net_device *dev, priv->scan_request = request; - tmp = cpu_to_le32(1); - ret = rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp, - sizeof(tmp)); + ret = rndis_start_bssid_list_scan(usbdev); if (ret == 0) { + if (priv->device_type == RNDIS_BCM4320A) + delay = HZ; + /* Wait before retrieving scan results from device */ - queue_delayed_work(priv->workqueue, &priv->scan_work, - SCAN_DELAY_JIFFIES); + queue_delayed_work(priv->workqueue, &priv->scan_work, delay); } return ret; @@ -3046,8 +3063,21 @@ static void rndis_device_poller(struct work_struct *work) * also polls device with rndis_command() and catches for media link * indications. */ - if (!is_associated(usbdev)) + if (!is_associated(usbdev)) { + /* Workaround bad scanning in BCM4320a devices with active + * background scanning when not associated. + */ + if (priv->device_type == RNDIS_BCM4320A && priv->radio_on && + !priv->scan_request) { + /* Get previous scan results */ + rndis_check_bssid_list(usbdev, NULL, NULL); + + /* Initiate new scan */ + rndis_start_bssid_list_scan(usbdev); + } + goto end; + } len = sizeof(rssi); ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len); @@ -3104,10 +3134,12 @@ end: /* * driver/device initialization */ -static void rndis_copy_module_params(struct usbnet *usbdev) +static void rndis_copy_module_params(struct usbnet *usbdev, int device_type) { struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); + priv->device_type = device_type; + priv->param_country[0] = modparam_country[0]; priv->param_country[1] = modparam_country[1]; priv->param_country[2] = 0; @@ -3150,12 +3182,25 @@ static void rndis_copy_module_params(struct usbnet *usbdev) priv->param_workaround_interval = modparam_workaround_interval; } +static int unknown_early_init(struct usbnet *usbdev) +{ + /* copy module parameters for unknown so that iwconfig reports txpower + * and workaround parameter is copied to private structure correctly. + */ + rndis_copy_module_params(usbdev, RNDIS_UNKNOWN); + + /* This is unknown device, so do not try set configuration parameters. + */ + + return 0; +} + static int bcm4320a_early_init(struct usbnet *usbdev) { /* copy module parameters for bcm4320a so that iwconfig reports txpower * and workaround parameter is copied to private structure correctly. */ - rndis_copy_module_params(usbdev); + rndis_copy_module_params(usbdev, RNDIS_BCM4320A); /* bcm4320a doesn't handle configuration parameters well. Try * set any and you get partially zeroed mac and broken device. @@ -3169,7 +3214,7 @@ static int bcm4320b_early_init(struct usbnet *usbdev) struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev); char buf[8]; - rndis_copy_module_params(usbdev); + rndis_copy_module_params(usbdev, RNDIS_BCM4320B); /* Early initialization settings, setting these won't have effect * if called after generic_rndis_bind(). @@ -3432,7 +3477,7 @@ static const struct driver_info rndis_wlan_info = { .tx_fixup = rndis_tx_fixup, .reset = rndis_wlan_reset, .stop = rndis_wlan_stop, - .early_init = bcm4320a_early_init, + .early_init = unknown_early_init, .indication = rndis_wlan_indication, }; |