made UDP's send_data call into IPv4's, so we can handle of the datagram stuff in one place.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20694 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/network/protocols/ipv4/ipv4.cpp

@@ -1260,7 +1260,11 @@ ipv4_send_data(net_protocol *_protocol, net_buffer *buffer)
 	status_t status = sDatalinkModule->get_buffer_route(sDomain, buffer,
 		&route);
 	if (status >= B_OK) {
-		status = ipv4_send_routed_data(protocol, route, buffer);
+		if (protocol)
+			status = protocol->socket->first_protocol->module->send_routed_data(
+				protocol->socket->first_protocol, route, buffer);
+		else
+			status = ipv4_send_routed_data(NULL, route, buffer);
 		sDatalinkModule->put_route(sDomain, route);
 	}
 

src/add-ons/kernel/network/protocols/udp/udp.cpp

@@ -894,15 +894,10 @@ UdpEndpoint::SendData(net_buffer *buffer)
 {
 	TRACE_EP("SendData(%p [%lu bytes])", buffer, buffer->size);
 
-	net_route *route = NULL;
+	// This will call into IPv4 which will do all of the obtaining
-	status_t status = gDatalinkModule->get_buffer_route(Domain(),
+	// routes and other datagram related dirty work and eventually
-		buffer,	&route);
+	// call back into our send_routed_data.
-	if (status >= B_OK) {
+	return next->module->send_data(next, buffer);
-		status = SendRoutedData(buffer, route);
-		gDatalinkModule->put_route(Domain(), route);
-	}
-
-	return status;
 }