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Reject new SCAN commands if there is a pending request

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FAIL-BUSY was already returned for the case where a scan had been
started, but with the radio work design, it would have been possible to
schedule multiple scan requests if a non-scan radio work was in
progress. Multiple back-to-back scans are not usually very helpful, so
reject this type of cases where the SCAN command would be used to build
such a sequence.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2014-12-12 12:11:14 +02:00 committed by Jouni Malinen
parent 9108ea09f2
commit e69ae5ff31
1 changed files with 7 additions and 0 deletions
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7
wpa_supplicant/ctrl_iface.c
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@ -6286,6 +6286,13 @@ static void wpas_ctrl_scan(struct wpa_supplicant *wpa_s, char *params,
return; return;
} }
if (radio_work_pending(wpa_s, "scan")) {
wpa_printf(MSG_DEBUG,
"Pending scan scheduled - reject new request");
*reply_len = os_snprintf(reply, reply_size, "FAIL-BUSY\n");
return;
}
if (params) { if (params) {
if (os_strncasecmp(params, "TYPE=ONLY", 9) == 0) if (os_strncasecmp(params, "TYPE=ONLY", 9) == 0)
scan_only = 1; scan_only = 1;