[zbin] Fix check for existence of most recent output byte
[ipxe.git] / src / usr / route_ipv4.c
1 /*
2 * Copyright (C) 2013 Michael Brown <mbrown@fensystems.co.uk>.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA.
18 */
19
20 FILE_LICENCE ( GPL2_OR_LATER );
21
22 #include <stdio.h>
23 #include <ipxe/netdevice.h>
24 #include <ipxe/ip.h>
25 #include <usr/route.h>
26
27 /** @file
28 *
29 * IPv4 routing management
30 *
31 */
32
33 /**
34 * Print IPv4 routing table
35 *
36 * @v netdev Network device
37 */
38 static void route_ipv4_print ( struct net_device *netdev ) {
39 struct ipv4_miniroute *miniroute;
40
41 list_for_each_entry ( miniroute, &ipv4_miniroutes, list ) {
42 if ( miniroute->netdev != netdev )
43 continue;
44 printf ( "%s: %s/", netdev->name,
45 inet_ntoa ( miniroute->address ) );
46 printf ( "%s", inet_ntoa ( miniroute->netmask ) );
47 if ( miniroute->gateway.s_addr )
48 printf ( " gw %s", inet_ntoa ( miniroute->gateway ) );
49 if ( ! netdev_is_open ( miniroute->netdev ) )
50 printf ( " (inaccessible)" );
51 printf ( "\n" );
52 }
53 }
54
55 /** IPv4 routing family */
56 struct routing_family ipv4_routing_family __routing_family ( ROUTING_IPV4 ) = {
57 .print = route_ipv4_print,
58 };