wl1271: Added support to scan on 5 GHz band
Added support to scan 802.11a access points on 5 GHz band when using
wl1273 chip.
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>
diff --git a/drivers/net/wireless/wl12xx/wl1271_cmd.c b/drivers/net/wireless/wl12xx/wl1271_cmd.c
index 204e872..6d7a40c 100644
--- a/drivers/net/wireless/wl12xx/wl1271_cmd.c
+++ b/drivers/net/wireless/wl12xx/wl1271_cmd.c
@@ -509,7 +509,7 @@
}
int wl1271_cmd_scan(struct wl1271 *wl, u8 *ssid, size_t len,
- u8 active_scan, u8 high_prio, u8 num_channels,
+ u8 active_scan, u8 high_prio, u8 band,
u8 probe_requests)
{
@@ -518,13 +518,26 @@
struct ieee80211_channel *channels;
int i, j, n_ch, ret;
u16 scan_options = 0;
+ u8 ieee_band;
+
+ if (band == WL1271_SCAN_BAND_2_4_GHZ)
+ ieee_band = IEEE80211_BAND_2GHZ;
+ else if (band == WL1271_SCAN_BAND_DUAL && wl1271_11a_enabled())
+ ieee_band = IEEE80211_BAND_2GHZ;
+ else if (band == WL1271_SCAN_BAND_5_GHZ && wl1271_11a_enabled())
+ ieee_band = IEEE80211_BAND_5GHZ;
+ else
+ return -EINVAL;
+
+ if (wl->hw->wiphy->bands[ieee_band]->channels == NULL)
+ return -EINVAL;
+
+ channels = wl->hw->wiphy->bands[ieee_band]->channels;
+ n_ch = wl->hw->wiphy->bands[ieee_band]->n_channels;
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;
@@ -540,10 +553,16 @@
params->params.scan_options = scan_options;
params->params.num_probe_requests = probe_requests;
- params->params.tx_rate = cpu_to_le32(CONF_HW_BIT_RATE_2MBPS);
+ /* Let the fw autodetect suitable tx_rate for probes */
+ params->params.tx_rate = 0;
params->params.tid_trigger = 0;
params->params.scan_tag = WL1271_SCAN_DEFAULT_TAG;
+ if (band == WL1271_SCAN_BAND_DUAL)
+ params->params.band = WL1271_SCAN_BAND_2_4_GHZ;
+ else
+ params->params.band = band;
+
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 =
@@ -567,7 +586,7 @@
memcpy(params->params.ssid, ssid, len);
}
- ret = wl1271_cmd_build_probe_req(wl, ssid, len);
+ ret = wl1271_cmd_build_probe_req(wl, ssid, len, ieee_band);
if (ret < 0) {
wl1271_error("PROBE request template failed");
goto out;
@@ -592,6 +611,19 @@
wl1271_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
wl->scanning = true;
+ if (wl1271_11a_enabled()) {
+ wl->scan.state = band;
+ if (band == WL1271_SCAN_BAND_DUAL) {
+ wl->scan.active = active_scan;
+ wl->scan.high_prio = high_prio;
+ wl->scan.probe_requests = probe_requests;
+ if (len && ssid) {
+ wl->scan.ssid_len = len;
+ memcpy(wl->scan.ssid, ssid, len);
+ } else
+ wl->scan.ssid_len = 0;
+ }
+ }
ret = wl1271_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
if (ret < 0) {
@@ -654,30 +686,62 @@
return ret;
}
-static int wl1271_build_basic_rates(char *rates)
+static int wl1271_build_basic_rates(char *rates, u8 band)
{
u8 index = 0;
- rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
- rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
- rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
- rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
+ if (band == IEEE80211_BAND_2GHZ) {
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
+ } else if (band == IEEE80211_BAND_5GHZ) {
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_6MB;
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_12MB;
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB;
+ } else {
+ wl1271_error("build_basic_rates invalid band: %d", band);
+ }
return index;
}
-static int wl1271_build_extended_rates(char *rates)
+static int wl1271_build_extended_rates(char *rates, u8 band)
{
u8 index = 0;
- rates[index++] = IEEE80211_OFDM_RATE_6MB;
- rates[index++] = IEEE80211_OFDM_RATE_9MB;
- rates[index++] = IEEE80211_OFDM_RATE_12MB;
- rates[index++] = IEEE80211_OFDM_RATE_18MB;
- rates[index++] = IEEE80211_OFDM_RATE_24MB;
- rates[index++] = IEEE80211_OFDM_RATE_36MB;
- rates[index++] = IEEE80211_OFDM_RATE_48MB;
- rates[index++] = IEEE80211_OFDM_RATE_54MB;
+ if (band == IEEE80211_BAND_2GHZ) {
+ rates[index++] = IEEE80211_OFDM_RATE_6MB;
+ rates[index++] = IEEE80211_OFDM_RATE_9MB;
+ rates[index++] = IEEE80211_OFDM_RATE_12MB;
+ rates[index++] = IEEE80211_OFDM_RATE_18MB;
+ rates[index++] = IEEE80211_OFDM_RATE_24MB;
+ rates[index++] = IEEE80211_OFDM_RATE_36MB;
+ rates[index++] = IEEE80211_OFDM_RATE_48MB;
+ rates[index++] = IEEE80211_OFDM_RATE_54MB;
+ } else if (band == IEEE80211_BAND_5GHZ) {
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_9MB;
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_18MB;
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB;
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_36MB;
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_48MB;
+ rates[index++] =
+ IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_54MB;
+ } else {
+ wl1271_error("build_basic_rates invalid band: %d", band);
+ }
return index;
}
@@ -720,12 +784,14 @@
}
-int wl1271_cmd_build_probe_req(struct wl1271 *wl, u8 *ssid, size_t ssid_len)
+int wl1271_cmd_build_probe_req(struct wl1271 *wl, u8 *ssid, size_t ssid_len,
+ u8 band)
{
struct wl12xx_probe_req_template template;
struct wl12xx_ie_rates *rates;
char *ptr;
u16 size;
+ int ret;
ptr = (char *)&template;
size = sizeof(struct ieee80211_header);
@@ -747,20 +813,25 @@
/* Basic Rates */
rates = (struct wl12xx_ie_rates *)ptr;
rates->header.id = WLAN_EID_SUPP_RATES;
- rates->header.len = wl1271_build_basic_rates(rates->rates);
+ rates->header.len = wl1271_build_basic_rates(rates->rates, band);
size += sizeof(struct wl12xx_ie_header) + rates->header.len;
ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
/* Extended rates */
rates = (struct wl12xx_ie_rates *)ptr;
rates->header.id = WLAN_EID_EXT_SUPP_RATES;
- rates->header.len = wl1271_build_extended_rates(rates->rates);
+ rates->header.len = wl1271_build_extended_rates(rates->rates, band);
size += sizeof(struct wl12xx_ie_header) + rates->header.len;
wl1271_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
- return wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
- &template, size);
+ if (band == IEEE80211_BAND_2GHZ)
+ ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
+ &template, size);
+ else
+ ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_5,
+ &template, size);
+ return ret;
}
int wl1271_cmd_set_default_wep_key(struct wl1271 *wl, u8 id)