From 311494c47fb670a1fd74eea54fa4d02a56fcc2ad Mon Sep 17 00:00:00 2001
From: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Date: Tue, 13 Oct 2009 12:47:49 +0300
Subject: [PATCH] wl1271: Scan only enabled channels
Added checking of whether channel is enabled or disabled by mac80211
stack to scan. Disabled channels are not scanned.
Signed-off-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Reviewed-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/wl12xx/wl1271_cmd.c | 33 +++++++++++++++---------
1 file changed, 21 insertions(+), 12 deletions(-)
diff --git a/drivers/net/wireless/wl12xx/wl1271_cmd.c b/drivers/net/wireless/wl12xx/wl1271_cmd.c
index f38e3e0e2d66..204e87218d8f 100644
--- a/drivers/net/wireless/wl12xx/wl1271_cmd.c
+++ b/drivers/net/wireless/wl12xx/wl1271_cmd.c
@@ -515,12 +515,16 @@ int wl1271_cmd_scan(struct wl1271 *wl, u8 *ssid, size_t len,
struct wl1271_cmd_trigger_scan_to *trigger = NULL;
struct wl1271_cmd_scan *params = NULL;
- int i, ret;
+ struct ieee80211_channel *channels;
+ int i, j, n_ch, ret;
u16 scan_options = 0;
if (wl->scanning)
return -EINVAL;
+ channels = wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels;
+ n_ch = wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->n_channels;
+
params = kzalloc(sizeof(*params), GFP_KERNEL);
if (!params)
return -ENOMEM;
@@ -535,24 +539,29 @@ int wl1271_cmd_scan(struct wl1271 *wl, u8 *ssid, size_t len,
scan_options |= WL1271_SCAN_OPT_PRIORITY_HIGH;
params->params.scan_options = scan_options;
- params->params.num_channels = num_channels;
params->params.num_probe_requests = probe_requests;
params->params.tx_rate = cpu_to_le32(CONF_HW_BIT_RATE_2MBPS);
params->params.tid_trigger = 0;
params->params.scan_tag = WL1271_SCAN_DEFAULT_TAG;
- for (i = 0; i < num_channels; i++) {
- params->channels[i].min_duration =
- cpu_to_le32(WL1271_SCAN_CHAN_MIN_DURATION);
- params->channels[i].max_duration =
- cpu_to_le32(WL1271_SCAN_CHAN_MAX_DURATION);
- memset(¶ms->channels[i].bssid_lsb, 0xff, 4);
- memset(¶ms->channels[i].bssid_msb, 0xff, 2);
- params->channels[i].early_termination = 0;
- params->channels[i].tx_power_att = WL1271_SCAN_CURRENT_TX_PWR;
- params->channels[i].channel = i + 1;
+ for (i = 0, j = 0; i < n_ch && i < WL1271_SCAN_MAX_CHANNELS; i++) {
+ if (!(channels[i].flags & IEEE80211_CHAN_DISABLED)) {
+ params->channels[j].min_duration =
+ cpu_to_le32(WL1271_SCAN_CHAN_MIN_DURATION);
+ params->channels[j].max_duration =
+ cpu_to_le32(WL1271_SCAN_CHAN_MAX_DURATION);
+ memset(¶ms->channels[j].bssid_lsb, 0xff, 4);
+ memset(¶ms->channels[j].bssid_msb, 0xff, 2);
+ params->channels[j].early_termination = 0;
+ params->channels[j].tx_power_att =
+ WL1271_SCAN_CURRENT_TX_PWR;
+ params->channels[j].channel = channels[i].hw_value;
+ j++;
+ }
}
+ params->params.num_channels = j;
+
if (len && ssid) {
params->params.ssid_len = len;
memcpy(params->params.ssid, ssid, len);
--
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