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P2P: Delay P2P scan when an external scan is in progress

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When an external scan is in progress on the same radio, delay the P2P
search operation based on configuration parameter p2p_search_delay. The
"search_delay" configuration done through p2p_find always takes
precedence over this delay value set due to an external scan trigger.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Purushottam Kushwaha 2020-12-08 16:23:56 +05:30 committed by Jouni Malinen
parent f39d6aacbb
commit 7b121af26a
3 changed files with 27 additions and 5 deletions
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7
src/p2p/p2p.c
View file

@ -3510,12 +3510,17 @@ int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
} }
void p2p_scan_res_handled(struct p2p_data *p2p) void p2p_scan_res_handled(struct p2p_data *p2p, unsigned int delay)
{ {
if (!p2p->p2p_scan_running) { if (!p2p->p2p_scan_running) {
p2p_dbg(p2p, "p2p_scan was not running, but scan results received"); p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
} }
p2p->p2p_scan_running = 0; p2p->p2p_scan_running = 0;
/* Use this delay only when p2p_find doesn't set it */
if (!p2p->search_delay)
p2p->search_delay = delay;
eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
if (p2p_run_after_scan(p2p)) if (p2p_run_after_scan(p2p))

3
src/p2p/p2p.h
View file

@ -1625,6 +1625,7 @@ int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
/** /**
* p2p_scan_res_handled - Indicate end of scan results * p2p_scan_res_handled - Indicate end of scan results
* @p2p: P2P module context from p2p_init() * @p2p: P2P module context from p2p_init()
* @delay: Search delay for next scan in ms
* *
* This function is called to indicate that all P2P scan results from a scan * This function is called to indicate that all P2P scan results from a scan
* have been reported with zero or more calls to p2p_scan_res_handler(). This * have been reported with zero or more calls to p2p_scan_res_handler(). This
@ -1632,7 +1633,7 @@ int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
* struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler() * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler()
* calls stopped iteration. * calls stopped iteration.
*/ */
void p2p_scan_res_handled(struct p2p_data *p2p); void p2p_scan_res_handled(struct p2p_data *p2p, unsigned int delay);
enum p2p_send_action_result { enum p2p_send_action_result {
P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */, P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */,

22
wpa_supplicant/p2p_supplicant.c
View file

@ -242,6 +242,22 @@ static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
} }
static void wpas_p2p_scan_res_handled(struct wpa_supplicant *wpa_s)
{
unsigned int delay = wpas_p2p_search_delay(wpa_s);
/* In case of concurrent P2P and external scans, delay P2P search. */
if (wpa_s->radio->external_scan_running) {
delay = wpa_s->conf->p2p_search_delay;
wpa_printf(MSG_DEBUG,
"P2P: Delay next P2P search by %d ms to let externally triggered scan complete",
delay);
}
p2p_scan_res_handled(wpa_s->global->p2p, delay);
}
static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
struct wpa_scan_results *scan_res) struct wpa_scan_results *scan_res)
{ {
@ -287,7 +303,7 @@ static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
break; break;
} }
p2p_scan_res_handled(wpa_s->global->p2p); wpas_p2p_scan_res_handled(wpa_s);
} }
@ -305,7 +321,7 @@ static void wpas_p2p_scan_res_fail_handler(struct wpa_supplicant *wpa_s)
wpa_dbg(wpa_s, MSG_DEBUG, wpa_dbg(wpa_s, MSG_DEBUG,
"P2P: Failed to get scan results - try to continue"); "P2P: Failed to get scan results - try to continue");
p2p_scan_res_handled(wpa_s->global->p2p); wpas_p2p_scan_res_handled(wpa_s);
} }
@ -7089,7 +7105,7 @@ static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
* Indicate that results have been processed so that the P2P module can * Indicate that results have been processed so that the P2P module can
* continue pending tasks. * continue pending tasks.
*/ */
p2p_scan_res_handled(wpa_s->global->p2p); wpas_p2p_scan_res_handled(wpa_s);
} }