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hostapd: Add option to send OBSS scan params

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Add a parameter to send the overlapping BSS scan parameter
information element. This will require clients to perform
background scans to check for neigbors overlapping this
HT40 BSS. Since the implementation is incomplete it should
only be used for testing.

Signed-hostap: Paul Stewart <pstew@chromium.org>
This commit is contained in:
Paul Stewart 2013-09-04 08:59:52 -07:00 • committed by Jouni Malinen
parent 60cdfd7e25
commit c101bb9d23
5 changed files with 37 additions and 0 deletions
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16
src/ap/ieee802_11_ht.c
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@ -50,6 +50,22 @@ u8 * hostapd_eid_ht_capabilities(struct hostapd_data *hapd, u8 *eid)
pos += sizeof(*cap);
if (hapd->iconf->obss_interval) {
struct ieee80211_obss_scan_parameters *scan_params;
*pos++ = WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS;
*pos++ = sizeof(*scan_params);
scan_params = (struct ieee80211_obss_scan_parameters *) pos;
os_memset(scan_params, 0, sizeof(*scan_params));
scan_params->width_trigger_scan_interval =
host_to_le16(hapd->iconf->obss_interval);
/* TODO: Fill in more parameters (supplicant ignores them) */
pos += sizeof(*scan_params);
}
return pos;
}