P2P: Add more debug prints for Probe Request processing

It can be helpful to see from the debug log why the P2P Device role did
not reply to a Probe Request frame.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

src/p2p/p2p.c

@@ -1974,17 +1974,20 @@ p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
 
 	if (!p2p->in_listen || !p2p->drv_in_listen) {
 		/* not in Listen state - ignore Probe Request */
+		p2p_dbg(p2p, "Not in Listen state - ignore Probe Request");
 		return P2P_PREQ_NOT_LISTEN;
 	}
 
 	if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
 	    ParseFailed) {
 		/* Ignore invalid Probe Request frames */
+		p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
 		return P2P_PREQ_MALFORMED;
 	}
 
 	if (elems.p2p == NULL) {
 		/* not a P2P probe - ignore it */
+		p2p_dbg(p2p, "Not a P2P probe - ignore it");
 		return P2P_PREQ_NOT_P2P;
 	}
 
@@ -1992,11 +1995,15 @@ p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
 	    os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
 		/* Not sent to the broadcast address or our P2P Device Address
 		 */
+		p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
+			MAC2STR(dst));
 		return P2P_PREQ_NOT_PROCESSED;
 	}
 
 	if (bssid && !is_broadcast_ether_addr(bssid)) {
 		/* Not sent to the Wildcard BSSID */
+		p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
+			MAC2STR(bssid));
 		return P2P_PREQ_NOT_PROCESSED;
 	}
 
@@ -2004,23 +2011,28 @@ p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
 	    os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
 	    0) {
 		/* not using P2P Wildcard SSID - ignore */
+		p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
 		return P2P_PREQ_NOT_PROCESSED;
 	}
 
 	if (supp_rates_11b_only(&elems)) {
 		/* Indicates support for 11b rates only */
+		p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
 		return P2P_PREQ_NOT_P2P;
 	}
 
 	os_memset(&msg, 0, sizeof(msg));
 	if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
 		/* Could not parse P2P attributes */
+		p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
 		return P2P_PREQ_NOT_P2P;
 	}
 
 	if (msg.device_id &&
 	    os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
 		/* Device ID did not match */
+		p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
+			MAC2STR(msg.device_id));
 		p2p_parse_free(&msg);
 		return P2P_PREQ_NOT_PROCESSED;
 	}
@@ -2029,6 +2041,7 @@ p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
 	if (msg.wps_attributes &&
 	    !p2p_match_dev_type(p2p, msg.wps_attributes)) {
 		/* No match with Requested Device Type */
+		p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
 		p2p_parse_free(&msg);
 		return P2P_PREQ_NOT_PROCESSED;
 	}
@@ -2036,6 +2049,7 @@ p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
 
 	if (!p2p->cfg->send_probe_resp) {
 		/* Response generated elsewhere */
+		p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
 		return P2P_PREQ_NOT_PROCESSED;
 	}