[ipv4] Abstract out protocol-specific portions of "route" command

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/config/config_route.c

@@ -0,0 +1,24 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2, or (at
+ * your option) any later version.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <config/general.h>
+
+/** @file
+ *
+ * Routing management configuration options
+ *
+ */
+
+/*
+ * Drag in routing management for relevant protocols
+ *
+ */
+#ifdef NET_PROTO_IPV4
+REQUIRE_OBJECT ( route_ipv4 );
+#endif

src/include/usr/route.h

@@ -3,12 +3,33 @@
 
 /** @file
  *
- * Routing table management
+ * Routing management
  *
  */
 
 FILE_LICENCE ( GPL2_OR_LATER );
 
+#include <ipxe/tables.h>
+
+/** A routing family */
+struct routing_family {
+	/**
+	 * Print routes for a network device
+	 *
+	 * @v netdev		Network device
+	 */
+	void ( * print ) ( struct net_device *netdev );
+};
+
+/** Routing family table */
+#define ROUTING_FAMILIES __table ( struct routing_family, "routing_families" )
+
+/** Declare a routing family */
+#define __routing_family( order ) __table_entry ( ROUTING_FAMILIES, order )
+
+#define ROUTING_IPV4 01
+#define ROUTING_IPV6 02
+
 extern void route ( void );
 
 #endif /* _USR_ROUTE_H */

src/usr/route.c

@@ -19,28 +19,26 @@
 
 FILE_LICENCE ( GPL2_OR_LATER );
 
-#include <stdio.h>
 #include <ipxe/netdevice.h>
-#include <ipxe/ip.h>
 #include <usr/route.h>
 
 /** @file
  *
- * Routing table management
+ * Routing management
  *
  */
 
+/**
+ * Print routing table
+ *
+ */
 void route ( void ) {
-	struct ipv4_miniroute *miniroute;
+	struct net_device *netdev;
+	struct routing_family *family;
 
-	list_for_each_entry ( miniroute, &ipv4_miniroutes, list ) {
-		printf ( "%s: %s/", miniroute->netdev->name,
-			 inet_ntoa ( miniroute->address ) );
-		printf ( "%s", inet_ntoa ( miniroute->netmask ) );
-		if ( miniroute->gateway.s_addr )
-			printf ( " gw %s", inet_ntoa ( miniroute->gateway ) );
-		if ( ! netdev_is_open ( miniroute->netdev ) )
-			printf ( " (inaccessible)" );
-		printf ( "\n" );
+	for_each_netdev ( netdev ) {
+		for_each_table_entry ( family, ROUTING_FAMILIES ) {
+			family->print ( netdev );
+		}
 	}
 }

src/usr/route_ipv4.c

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2013 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdio.h>
+#include <ipxe/netdevice.h>
+#include <ipxe/ip.h>
+#include <usr/route.h>
+
+/** @file
+ *
+ * IPv4 routing management
+ *
+ */
+
+/**
+ * Print IPv4 routing table
+ *
+ * @v netdev		Network device
+ */
+static void route_ipv4_print ( struct net_device *netdev ) {
+	struct ipv4_miniroute *miniroute;
+
+	list_for_each_entry ( miniroute, &ipv4_miniroutes, list ) {
+		if ( miniroute->netdev != netdev )
+			continue;
+		printf ( "%s: %s/", netdev->name,
+			 inet_ntoa ( miniroute->address ) );
+		printf ( "%s", inet_ntoa ( miniroute->netmask ) );
+		if ( miniroute->gateway.s_addr )
+			printf ( " gw %s", inet_ntoa ( miniroute->gateway ) );
+		if ( ! netdev_is_open ( miniroute->netdev ) )
+			printf ( " (inaccessible)" );
+		printf ( "\n" );
+	}
+}
+
+/** IPv4 routing family */
+struct routing_family ipv4_routing_family __routing_family ( ROUTING_IPV4 ) = {
+	.print = route_ipv4_print,
+};