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Scan only 2.4 GHz band for OBSS scans

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Since we are reporting 20/40 BSS coex information only for 2.4 GHz band,
there is no need to run the full scan on dualband cards.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2012-05-03 15:51:18 +03:00 committed by Jouni Malinen
parent c3701c66a5
commit 6434ad09d6
1 changed files with 43 additions and 1 deletions
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44
wpa_supplicant/sme.c
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@ -754,6 +754,47 @@ int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
}
static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
u16 num_modes,
enum hostapd_hw_mode mode)
{
u16 i;
for (i = 0; i < num_modes; i++) {
if (modes[i].mode == mode)
return &modes[i];
}
return NULL;
}
static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s,
enum hostapd_hw_mode band,
struct wpa_driver_scan_params *params)
{
/* Include only supported channels for the specified band */
struct hostapd_hw_modes *mode;
int count, i;
mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band);
if (mode == NULL) {
/* No channels supported in this band - use empty list */
params->freqs = os_zalloc(sizeof(int));
return;
}
params->freqs = os_zalloc((mode->num_channels + 1) * sizeof(int));
if (params->freqs == NULL)
return;
for (count = 0, i = 0; i < mode->num_channels; i++) {
if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
continue;
params->freqs[count++] = mode->channels[i].freq;
}
}
static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
@ -765,13 +806,14 @@ static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
}
os_memset(&params, 0, sizeof(params));
/* TODO: 2.4 GHz channels only */
wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, &params);
wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
if (wpa_supplicant_trigger_scan(wpa_s, &params))
wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
else
wpa_s->sme.sched_obss_scan = 1;
os_free(params.freqs);
eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
sme_obss_scan_timeout, wpa_s, NULL);