int wil_p2p_listen(struct wil6210_priv *wil, unsigned int duration,
struct ieee80211_channel *chan, u64 *cookie)
{
struct wil_p2p_info *p2p = &wil->p2p;
u8 channel = P2P_DMG_SOCIAL_CHANNEL;
int rc;
if (!chan)
return -EINVAL;
channel = chan->hw_value;
wil_dbg_misc(wil, "%s: duration %d\n", __func__, duration);
mutex_lock(&wil->mutex);
if (p2p->discovery_started) {
wil_err(wil, "%s: discovery already ongoing\n", __func__);
rc = -EBUSY;
goto out;
}
rc = wmi_p2p_cfg(wil, channel, P2P_DEFAULT_BI);
if (rc) {
wil_err(wil, "%s: wmi_p2p_cfg failed\n", __func__);
goto out;
}
rc = wmi_set_ssid(wil, strlen(P2P_WILDCARD_SSID), P2P_WILDCARD_SSID);
if (rc) {
wil_err(wil, "%s: wmi_set_ssid failed\n", __func__);
goto out_stop;
}
rc = wmi_start_listen(wil);
if (rc) {
wil_err(wil, "%s: wmi_start_listen failed\n", __func__);
goto out_stop;
}
memcpy(&p2p->listen_chan, chan, sizeof(*chan));
*cookie = ++p2p->cookie;
p2p->discovery_started = 1;
INIT_WORK(&p2p->discovery_expired_work, wil_p2p_listen_expired);
mod_timer(&p2p->discovery_timer,
jiffies + msecs_to_jiffies(duration));
out_stop:
if (rc)
wmi_stop_discovery(wil);
out:
mutex_unlock(&wil->mutex);
return rc;
}
u8 wil_p2p_stop_discovery(struct wil6210_priv *wil)
{
struct wil_p2p_info *p2p = &wil->p2p;
u8 started = p2p->discovery_started;
if (p2p->discovery_started) {
del_timer_sync(&p2p->discovery_timer);
p2p->discovery_started = 0;
wmi_stop_discovery(wil);
}
return started;
}
u8 wil_p2p_stop_discovery(struct wil6210_priv *wil)
{
struct wil_p2p_info *p2p = &wil->p2p;
u8 started = p2p->discovery_started;
if (p2p->discovery_started) {
if (p2p->pending_listen_wdev) {
/* discovery not really started, only pending */
p2p->pending_listen_wdev = NULL;
} else {
del_timer_sync(&p2p->discovery_timer);
wmi_stop_discovery(wil);
}
p2p->discovery_started = 0;
}
return started;
}
static int wil_p2p_start_listen(struct wil6210_priv *wil)
{
struct wil_p2p_info *p2p = &wil->p2p;
u8 channel = p2p->listen_chan.hw_value;
int rc;
lockdep_assert_held(&wil->mutex);
rc = wmi_p2p_cfg(wil, channel, P2P_DEFAULT_BI);
if (rc) {
wil_err(wil, "wmi_p2p_cfg failed\n");
goto out;
}
rc = wmi_set_ssid(wil, strlen(P2P_WILDCARD_SSID), P2P_WILDCARD_SSID);
if (rc) {
wil_err(wil, "wmi_set_ssid failed\n");
goto out_stop;
}
rc = wmi_start_listen(wil);
if (rc) {
wil_err(wil, "wmi_start_listen failed\n");
goto out_stop;
}
INIT_WORK(&p2p->discovery_expired_work, wil_p2p_listen_expired);
mod_timer(&p2p->discovery_timer,
jiffies + msecs_to_jiffies(p2p->listen_duration));
out_stop:
if (rc)
wmi_stop_discovery(wil);
out:
return rc;
}
int wil_p2p_search(struct wil6210_priv *wil,
struct cfg80211_scan_request *request)
{
int rc;
struct wil_p2p_info *p2p = &wil->p2p;
wil_dbg_misc(wil, "p2p_search: channel %d\n", P2P_DMG_SOCIAL_CHANNEL);
lockdep_assert_held(&wil->mutex);
if (p2p->discovery_started) {
wil_err(wil, "search failed. discovery already ongoing\n");
rc = -EBUSY;
goto out;
}
rc = wmi_p2p_cfg(wil, P2P_DMG_SOCIAL_CHANNEL, P2P_DEFAULT_BI);
if (rc) {
wil_err(wil, "wmi_p2p_cfg failed\n");
goto out;
}
rc = wmi_set_ssid(wil, strlen(P2P_WILDCARD_SSID), P2P_WILDCARD_SSID);
if (rc) {
wil_err(wil, "wmi_set_ssid failed\n");
goto out_stop;
}
/* Set application IE to probe request and probe response */
rc = wmi_set_ie(wil, WMI_FRAME_PROBE_REQ,
request->ie_len, request->ie);
if (rc) {
wil_err(wil, "wmi_set_ie(WMI_FRAME_PROBE_REQ) failed\n");
goto out_stop;
}
/* supplicant doesn't provide Probe Response IEs. As a workaround -
* re-use Probe Request IEs
*/
rc = wmi_set_ie(wil, WMI_FRAME_PROBE_RESP,
request->ie_len, request->ie);
if (rc) {
wil_err(wil, "wmi_set_ie(WMI_FRAME_PROBE_RESP) failed\n");
goto out_stop;
}
rc = wmi_start_search(wil);
if (rc) {
wil_err(wil, "wmi_start_search failed\n");
goto out_stop;
}
p2p->discovery_started = 1;
INIT_WORK(&p2p->discovery_expired_work, wil_p2p_search_expired);
mod_timer(&p2p->discovery_timer,
jiffies + msecs_to_jiffies(P2P_SEARCH_DURATION_MS));
out_stop:
if (rc)
wmi_stop_discovery(wil);
out:
return rc;
}