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P2P: Do not start multiple copies of same persistent group

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When running p2p_group_add persistent=<id>, verify whether the
requested group is already running and if so, do not try to
start another copy of it.
This commit is contained in:
Jouni Malinen 2010-11-19 12:57:36 +02:00 committed by Jouni Malinen
parent 7d23e971f0
commit 6c0da49f62
1 changed files with 33 additions and 0 deletions
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33
wpa_supplicant/p2p_supplicant.c
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@ -180,6 +180,31 @@ static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
}
static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
const u8 *ssid,
size_t ssid_len, int *go)
{
struct wpa_ssid *s;
for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
for (s = wpa_s->conf->ssid; s; s = s->next) {
if (s->disabled != 0 || !s->p2p_group ||
s->ssid_len != ssid_len ||
os_memcmp(ssid, s->ssid, ssid_len) != 0)
continue;
if (s->mode == WPAS_MODE_P2P_GO &&
s != wpa_s->current_ssid)
continue;
if (go)
*go = s->mode == WPAS_MODE_P2P_GO;
return wpa_s;
}
}
return NULL;
}
static void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s)
{
struct wpa_ssid *ssid;
@ -3137,10 +3162,18 @@ int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
int freq)
{
struct p2p_go_neg_results params;
int go = 0;
if (ssid->disabled != 2 || ssid->ssid == NULL)
return -1;
if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
go == (ssid->mode == WPAS_MODE_P2P_GO)) {
wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
"already running");
return 0;
}
wpa_s->p2p_long_listen = 0;
eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);