[PATCH 4/4] P2P: Handle driver NOA notification

[Janusz.Dziedzic at tieto.com]

Update NOA attribute in beacon and probe response
frames after we will get NOA change/set notification
from the driver.
---
 src/p2p/p2p.h                   |   22 +++++++++++++++++
 src/p2p/p2p_group.c             |   49 +++++++++++++++++++++++++++++++++++++++
 wpa_supplicant/events.c         |   10 +++++--
 wpa_supplicant/p2p_supplicant.c |   19 +++++++++++++++
 wpa_supplicant/p2p_supplicant.h |    3 ++
 5 files changed, 100 insertions(+), 3 deletions(-)

diff --git a/src/p2p/p2p.h b/src/p2p/p2p.h
index 51a46c8..e64361d 100644
--- a/src/p2p/p2p.h
+++ b/src/p2p/p2p.h
@@ -1547,4 +1547,26 @@ int p2p_in_progress(struct p2p_data *p2p);
  */
 int p2p_other_scan_completed(struct p2p_data *p2p);
 
+/**
+ * p2p_group_handle_driver_notify_noa - Handle driver notification about
+ *	NOA change/set
+ * @p2p_group: P2P group context from p2p_group_init()
+ * @index: Instance of NOA timeing
+ * @oppps_ctwindow: Opportunistic power save capability
+ *		    BIT(7): 1 - enabled, 0 disabled
+ *		    BITS(0-6) - Client Traffic Window in TU
+ * @count_type: Indicates the number of absence intervals
+ *		255 - mean a continous schedule
+ *		0 - mean NOA disabled
+ * @duration: Duration in units of microseconds that P2P_GO
+ *	      can remain absent following the start of NOA
+ *	      interval
+ * @interval: NOA interval in units of microseconds
+ * @start_time: The start time for the schedule expressed in terms
+ *		of lower 4 bytes of the TSF timer
+ */
+void p2p_group_handle_driver_notify_noa(struct p2p_group *group, u8 index,
+					u8 oppps_ctwindow, u8 count_type,
+					u32 duration, u32 interval,
+					u32 start_time);
 #endif /* P2P_H */
diff --git a/src/p2p/p2p_group.c b/src/p2p/p2p_group.c
index be5075a..560a2f6 100644
--- a/src/p2p/p2p_group.c
+++ b/src/p2p/p2p_group.c
@@ -696,3 +696,52 @@ const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next)
 
 	return iter->addr;
 }
+
+
+void p2p_group_handle_driver_notify_noa(struct p2p_group *group, u8 index,
+					u8 oppps_ctwindow, u8 count_type,
+					u32 duration, u32 interval,
+					u32 start_time)
+{
+	struct wpabuf *req;
+	struct p2p_noa_desc desc = {0}, *noa_desc;
+
+	wpa_printf(MSG_DEBUG, "%s called, index: %d, oppps: %d, count: %d, "
+			      "duration: %d, interval: %d, start: %d\n",
+			      __func__, index, oppps_ctwindow, count_type,
+			      duration, interval, start_time);
+
+	noa_desc = &desc;
+	req = wpabuf_alloc(100);
+	if (req == NULL)
+		return;
+
+	desc.count_type = count_type;
+	desc.duration = duration;
+	desc.interval = interval;
+	desc.start_time = start_time;
+
+	/* Check if NOA disabled */
+	if(count_type == 0)
+		noa_desc = NULL;
+
+	/* Build NOA attr */
+	p2p_buf_add_noa(req,
+			index,
+			0,
+			0,
+			noa_desc, NULL);
+
+	/* Check if we should clear NOA attr */
+	if (!(oppps_ctwindow & BIT(7)) && !noa_desc) {
+		/* Remove NOA attr */
+		wpabuf_free(req);
+		req = NULL;
+	}
+
+	/* Update beacon, probe_resp IEs */
+	p2p_group_notif_noa(group, req);
+
+	if (req)
+		wpabuf_free(req);
+}
diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index 509b05e..d3e8086 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -2471,10 +2471,14 @@ void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
 		break;
 	case EVENT_DRIVER_NOTIFY_NOA:
 #ifdef CONFIG_P2P
-		/* TODO: Update Beacon and probe response here
-		 *	 p2p_group_notif_noa()
-		 */
 		wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_DRIVER_NOTIFY_NOA");
+		wpas_handle_notify_noa(wpa_s,
+				data->driver_notify_noa.index,
+				data->driver_notify_noa.oppps_ctwindow,
+				data->driver_notify_noa.count_type,
+				data->driver_notify_noa.duration,
+				data->driver_notify_noa.interval,
+				data->driver_notify_noa.start_time);
 #endif /* CONFIG_P2P */
 		break;
 	default:
diff --git a/wpa_supplicant/p2p_supplicant.c b/wpa_supplicant/p2p_supplicant.c
index c82b7f8..087250d 100644
--- a/wpa_supplicant/p2p_supplicant.c
+++ b/wpa_supplicant/p2p_supplicant.c
@@ -4161,3 +4161,22 @@ int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
 
 	return p2p_in_progress(wpa_s->global->p2p);
 }
+
+
+void wpas_handle_notify_noa(void *ctx, u8 index, u8 oppps_ctwindow,
+			    u8 count_type, u32 duration, u32 interval,
+			    u32 start_time)
+{
+	struct wpa_supplicant *wpa_s = ctx;
+
+	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
+		return;
+
+	if (!wpa_s->ap_iface)
+		return;
+
+	p2p_group_handle_driver_notify_noa(wpa_s->ap_iface->bss[0]->p2p_group,
+					   index, oppps_ctwindow,
+					   count_type, duration, interval,
+					   start_time);
+}
diff --git a/wpa_supplicant/p2p_supplicant.h b/wpa_supplicant/p2p_supplicant.h
index 3adb076..271e312 100644
--- a/wpa_supplicant/p2p_supplicant.h
+++ b/wpa_supplicant/p2p_supplicant.h
@@ -129,4 +129,7 @@ void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
 			 struct wps_event_fail *fail);
 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s);
 
+void wpas_handle_notify_noa(void *ctx, u8 index, u8 oppps_ctwindow,
+			    u8 count_type, u32 duration, u32 interval,
+			    u32 start_time);
 #endif /* P2P_SUPPLICANT_H */
-- 
1.7.0.4
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0004-P2P-Handle-driver-NOA-notification.patch
Type: application/octet-stream
Size: 5339 bytes
Desc: 0004-P2P-Handle-driver-NOA-notification.patch
Url : http://lists.shmoo.com/pipermail/hostap/attachments/20111128/d23f0ede/attachment.obj