nl80211: Add support for additional scan parameters for beacon report

Add support for:
 1. Setting scan dwell time
 2. Parsing scan start TSF and beacon received TSF reported
    by the driver
 3. Setting driver capabilities for the above

These capabilities are needed for Beacon Report radio measurement.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>

src/drivers/driver_nl80211_capa.c

@@ -377,6 +377,18 @@ static void wiphy_info_ext_feature_flags(struct wiphy_info_data *info,
 	if (ext_feature_isset(ext_features, len,
 			      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
 		capa->flags |= WPA_DRIVER_FLAGS_BEACON_RATE_VHT;
+
+	if (ext_feature_isset(ext_features, len,
+			      NL80211_EXT_FEATURE_SET_SCAN_DWELL))
+		capa->rrm_flags |= WPA_DRIVER_FLAGS_SUPPORT_SET_SCAN_DWELL;
+
+	if (ext_feature_isset(ext_features, len,
+			      NL80211_EXT_FEATURE_SCAN_START_TIME) &&
+	    ext_feature_isset(ext_features, len,
+			      NL80211_EXT_FEATURE_BSS_PARENT_TSF) &&
+	    ext_feature_isset(ext_features, len,
+			      NL80211_EXT_FEATURE_SET_SCAN_DWELL))
+		capa->rrm_flags |= WPA_DRIVER_FLAGS_SUPPORT_BEACON_REPORT;
 }
 
 

src/drivers/driver_nl80211_event.c

@@ -1110,6 +1110,16 @@ static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
 		wpa_printf(MSG_DEBUG, "nl80211: Scan included frequencies:%s",
 			   msg);
 	}
+
+	if (tb[NL80211_ATTR_SCAN_START_TIME_TSF] &&
+	    tb[NL80211_ATTR_SCAN_START_TIME_TSF_BSSID]) {
+		info->scan_start_tsf =
+			nla_get_u64(tb[NL80211_ATTR_SCAN_START_TIME_TSF]);
+		os_memcpy(info->scan_start_tsf_bssid,
+			  nla_data(tb[NL80211_ATTR_SCAN_START_TIME_TSF_BSSID]),
+			  ETH_ALEN);
+	}
+
 	wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
 }
 

src/drivers/driver_nl80211_scan.c

@@ -270,6 +270,19 @@ nl80211_scan_common(struct i802_bss *bss, u8 cmd,
 		}
 	}
 
+	if (params->duration) {
+		if (!(drv->capa.rrm_flags &
+		      WPA_DRIVER_FLAGS_SUPPORT_SET_SCAN_DWELL) ||
+		    nla_put_u16(msg, NL80211_ATTR_MEASUREMENT_DURATION,
+				params->duration))
+			goto fail;
+
+		if (params->duration_mandatory &&
+		    nla_put_flag(msg,
+				 NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY))
+			goto fail;
+	}
+
 	if (scan_flags &&
 	    nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, scan_flags))
 		goto fail;
@@ -645,6 +658,8 @@ nl80211_parse_bss_info(struct wpa_driver_nl80211_data *drv,
 		[NL80211_BSS_STATUS] = { .type = NLA_U32 },
 		[NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
 		[NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
+		[NL80211_BSS_PARENT_TSF] = { .type = NLA_U64 },
+		[NL80211_BSS_PARENT_BSSID] = { .type = NLA_UNSPEC },
 	};
 	struct wpa_scan_res *r;
 	const u8 *ie, *beacon_ie;
@@ -730,6 +745,12 @@ nl80211_parse_bss_info(struct wpa_driver_nl80211_data *drv,
 		}
 	}
 
+	if (bss[NL80211_BSS_PARENT_TSF] && bss[NL80211_BSS_PARENT_BSSID]) {
+		r->parent_tsf = nla_get_u64(bss[NL80211_BSS_PARENT_TSF]);
+		os_memcpy(r->tsf_bssid, nla_data(bss[NL80211_BSS_PARENT_BSSID]),
+			  ETH_ALEN);
+	}
+
 	return r;
 }