Move get_hdr_bssid() to make it easier to share for other uses

src/ap/drv_callbacks.c

@@ -297,46 +297,6 @@ int hostapd_probe_req_rx(struct hostapd_data *hapd, const u8 *sa, const u8 *da,
 
 #ifdef NEED_AP_MLME
 
-static const u8 * get_hdr_bssid(const struct ieee80211_hdr *hdr, size_t len)
-{
-	u16 fc, type, stype;
-
-	/*
-	 * PS-Poll frames are 16 bytes. All other frames are
-	 * 24 bytes or longer.
-	 */
-	if (len < 16)
-		return NULL;
-
-	fc = le_to_host16(hdr->frame_control);
-	type = WLAN_FC_GET_TYPE(fc);
-	stype = WLAN_FC_GET_STYPE(fc);
-
-	switch (type) {
-	case WLAN_FC_TYPE_DATA:
-		if (len < 24)
-			return NULL;
-		switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
-		case WLAN_FC_FROMDS | WLAN_FC_TODS:
-		case WLAN_FC_TODS:
-			return hdr->addr1;
-		case WLAN_FC_FROMDS:
-			return hdr->addr2;
-		default:
-			return NULL;
-		}
-	case WLAN_FC_TYPE_CTRL:
-		if (stype != WLAN_FC_STYPE_PSPOLL)
-			return NULL;
-		return hdr->addr1;
-	case WLAN_FC_TYPE_MGMT:
-		return hdr->addr3;
-	default:
-		return NULL;
-	}
-}
-
-
 #define HAPD_BROADCAST ((struct hostapd_data *) -1)
 
 static struct hostapd_data * get_hapd_bssid(struct hostapd_iface *iface,

src/common/ieee802_11_common.c

@@ -345,3 +345,43 @@ struct wpabuf * ieee802_11_vendor_ie_concat(const u8 *ies, size_t ies_len,
 
 	return buf;
 }
+
+
+const u8 * get_hdr_bssid(const struct ieee80211_hdr *hdr, size_t len)
+{
+	u16 fc, type, stype;
+
+	/*
+	 * PS-Poll frames are 16 bytes. All other frames are
+	 * 24 bytes or longer.
+	 */
+	if (len < 16)
+		return NULL;
+
+	fc = le_to_host16(hdr->frame_control);
+	type = WLAN_FC_GET_TYPE(fc);
+	stype = WLAN_FC_GET_STYPE(fc);
+
+	switch (type) {
+	case WLAN_FC_TYPE_DATA:
+		if (len < 24)
+			return NULL;
+		switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
+		case WLAN_FC_FROMDS | WLAN_FC_TODS:
+		case WLAN_FC_TODS:
+			return hdr->addr1;
+		case WLAN_FC_FROMDS:
+			return hdr->addr2;
+		default:
+			return NULL;
+		}
+	case WLAN_FC_TYPE_CTRL:
+		if (stype != WLAN_FC_STYPE_PSPOLL)
+			return NULL;
+		return hdr->addr1;
+	case WLAN_FC_TYPE_MGMT:
+		return hdr->addr3;
+	default:
+		return NULL;
+	}
+}

src/common/ieee802_11_common.h

@@ -77,5 +77,7 @@ ParseRes ieee802_11_parse_elems(const u8 *start, size_t len,
 int ieee802_11_ie_count(const u8 *ies, size_t ies_len);
 struct wpabuf * ieee802_11_vendor_ie_concat(const u8 *ies, size_t ies_len,
 					    u32 oui_type);
+struct ieee80211_hdr;
+const u8 * get_hdr_bssid(const struct ieee80211_hdr *hdr, size_t len);
 
 #endif /* IEEE802_11_COMMON_H */