Make the UDP senddata() methods return a status code.

udp_connect() now follows the standard BSD sockets semantics and simply
sets the default address for outgoing packets; it doesn't filter incoming
packets.

src/net/udp.c

@@ -66,18 +66,6 @@ void udp_connect ( struct udp_connection *conn, struct sockaddr_tcpip *peer ) {
 	memcpy ( &conn->peer, peer, sizeof ( conn->peer ) );
 }
 
-/**
- * Connect UDP connection to all remote hosts and ports
- *
- * @v conn		UDP connection
- *
- * This undoes the effect of a call to udp_connect(), i.e. allows the
- * connection to receive packets from all remote hosts and ports.
- */
-void udp_connect_promisc ( struct udp_connection *conn ) {
-	memset ( &conn->peer, 0, sizeof ( conn->peer ) );
-}
-
 /**
  * Open a local port
  *
@@ -140,9 +128,8 @@ int udp_senddata ( struct udp_connection *conn ) {
 		return -ENOMEM;
 	}
 	pkb_reserve ( conn->tx_pkb, UDP_MAX_HLEN );
-	conn->udp_op->senddata ( conn, conn->tx_pkb->data, 
-				 pkb_available ( conn->tx_pkb ) );
-	return 0;
+	return conn->udp_op->senddata ( conn, conn->tx_pkb->data, 
+					pkb_available ( conn->tx_pkb ) );
 }
 		
 /**
@@ -271,14 +258,6 @@ static int udp_rx ( struct pk_buff *pkb, struct sockaddr_tcpip *st_src,
 			/* Bound to local port and local port doesn't match */
 			continue;
 		}
-		if ( conn->peer.st_family &&
-		     ( memcmp ( &conn->peer, st_src,
-				sizeof ( conn->peer ) ) != 0 ) ) {
-			/* Connected to remote port and remote port
-			 * doesn't match
-			 */
-			continue;
-		}
 		
 		/* Strip off the UDP header */
 		pkb_pull ( pkb, sizeof ( *udphdr ) );

src/net/udp/dhcp.c

@@ -508,9 +508,10 @@ static union {
  * @v conn		UDP connection
  * @v buf		Temporary data buffer
  * @v len		Length of temporary data buffer
+ * @ret rc		Return status code
  */
-static void dhcp_senddata ( struct udp_connection *conn,
-			    void *buf, size_t len ) {
+static int dhcp_senddata ( struct udp_connection *conn,
+			   void *buf, size_t len ) {
 	struct dhcp_session *dhcp = udp_to_dhcp ( conn );
 	struct dhcp_packet dhcppkt;
 	int rc;
@@ -524,14 +525,14 @@ static void dhcp_senddata ( struct udp_connection *conn,
 	if ( ( rc = create_dhcp_packet ( dhcp, dhcp->state, buf, len,
 					 &dhcppkt ) ) != 0 ) {
 		DBG ( "Could not create DHCP packet\n" );
-		return;
+		return rc;
 	}
 
 	/* Copy in options common to all requests */
 	if ( ( rc = copy_dhcp_packet_options ( &dhcppkt,
 					       &dhcp_request_options ) ) != 0){
 		DBG ( "Could not set common DHCP options\n" );
-		return;
+		return rc;
 	}
 
 	/* Copy any required options from previous server repsonse */
@@ -540,13 +541,13 @@ static void dhcp_senddata ( struct udp_connection *conn,
 					    DHCP_SERVER_IDENTIFIER,
 					    DHCP_SERVER_IDENTIFIER ) ) != 0 ) {
 			DBG ( "Could not set server identifier option\n" );
-			return;
+			return rc;
 		}
 		if ( ( rc = copy_dhcp_packet_option ( &dhcppkt, dhcp->options,
 					    DHCP_EB_YIADDR,
 					    DHCP_REQUESTED_ADDRESS ) ) != 0 ) {
 			DBG ( "Could not set requested address option\n" );
-			return;
+			return rc;
 		}
 	}
 
@@ -554,8 +555,10 @@ static void dhcp_senddata ( struct udp_connection *conn,
 	if ( ( rc = udp_sendto ( conn, &sa_dhcp_server.st,
 				 dhcppkt.dhcphdr, dhcppkt.len ) ) != 0 ) {
 		DBG ( "Could not transmit UDP packet\n" );
-		return;
+		return rc;
 	}
+
+	return 0;
 }
 
 /**