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at76c50x-usb: update to latest mac80211 hw scan api

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With the latest mac80211 stack, the driver needs to be updated for
cfg80211 scanning.  I based the changes off of modifications for
at76_usb found here:

http://johannes.sipsolutions.net/patches/old/all/2008-09-19-13:35/020-cfg80211-scan.patch

The trick was that max_signal also needs to be set to avoid a divide
by zero Oops.  I just guessed and used the value 100 for now.

kvalo: handpicked the change from two different patches

Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
Signed-off-by: Kalle Valo <kalle.valo@iki.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jason Andryuk 2009-02-18 22:40:57 +02:00 committed by John W. Linville
parent 1264b95146
commit 19e8bc7fa7
1 changed files with 18 additions and 6 deletions
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24
drivers/net/wireless/at76c50x-usb.c
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@ -1861,7 +1861,7 @@ static void at76_dwork_hw_scan(struct work_struct *work)
goto exit;
}
ieee80211_scan_completed(priv->hw);
ieee80211_scan_completed(priv->hw, false);
if (is_valid_ether_addr(priv->bssid))
at76_join(priv);
@ -1872,14 +1872,15 @@ exit:
mutex_unlock(&priv->mtx);
}
static int at76_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
static int at76_hw_scan(struct ieee80211_hw *hw,
struct cfg80211_scan_request *req)
{
struct at76_priv *priv = hw->priv;
struct at76_req_scan scan;
int ret;
u8 *ssid = NULL;
int ret, len = 0;
at76_dbg(DBG_MAC80211, "%s():", __func__);
at76_dbg_dump(DBG_MAC80211, ssid, len, "ssid %zd bytes:", len);
mutex_lock(&priv->mtx);
@ -1887,11 +1888,20 @@ static int at76_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
memset(&scan, 0, sizeof(struct at76_req_scan));
memset(scan.bssid, 0xFF, ETH_ALEN);
scan.scan_type = SCAN_TYPE_ACTIVE;
if (priv->essid_size > 0) {
if (req->n_ssids) {
scan.scan_type = SCAN_TYPE_ACTIVE;
ssid = req->ssids[0].ssid;
len = req->ssids[0].ssid_len;
} else {
scan.scan_type = SCAN_TYPE_PASSIVE;
}
if (len) {
memcpy(scan.essid, ssid, len);
scan.essid_size = len;
}
scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
@ -2217,10 +2227,12 @@ static int at76_init_new_device(struct at76_priv *priv,
priv->scan_mode = SCAN_TYPE_ACTIVE;
/* mac80211 initialisation */
priv->hw->wiphy->max_scan_ssids = 1;
priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
IEEE80211_HW_SIGNAL_UNSPEC;
priv->hw->max_signal = 100;
SET_IEEE80211_DEV(priv->hw, &interface->dev);
SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);