route_ipv4.c File Reference

IPv4 routing management. More...

#include <stdio.h>
#include <ipxe/netdevice.h>
#include <ipxe/ip.h>
#include <usr/route.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
static void	route_ipv4_print (struct net_device *netdev)
	Print IPv4 routing table. More...
struct routing_family ipv4_routing_family	__routing_family (ROUTING_IPV4)
	IPv4 routing family. More...

Detailed Description

IPv4 routing management.

Definition in file route_ipv4.c.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

route_ipv4_print()

static void route_ipv4_print ( struct net_device *  netdev )

static

Print IPv4 routing table.

Parameters

netdev

Network device

Definition at line 42 of file route_ipv4.c.

                                                           {
        struct ipv4_miniroute *miniroute;
        struct ipv4_miniroute *defroute;
        struct in_addr address;
        struct in_addr network;
        struct in_addr netmask;
        struct in_addr gateway;
        int remote;

        /* Print routing table */
        list_for_each_entry ( miniroute, &ipv4_miniroutes, list ) {

                /* Skip non-matching network devices */
                if ( miniroute->netdev != netdev )
                        continue;
                address = miniroute->address;
                network = miniroute->network;
                netmask = miniroute->netmask;
                gateway = miniroute->gateway;
                assert ( ( network.s_addr & ~netmask.s_addr ) == 0 );

                /* Defer default routes to be printed with local addresses */
                if ( ! netmask.s_addr )
                        continue;

                /* Print local address and destination subnet */
                remote = ( ( address.s_addr ^ network.s_addr ) &
                           netmask.s_addr );
                printf ( "%s: %s", netdev->name, inet_ntoa ( address ) );
                if ( remote )
                        printf ( " for %s", inet_ntoa ( network ) );
                printf ( "/%s", inet_ntoa ( netmask ) );
                if ( gateway.s_addr )
                        printf ( " gw %s", inet_ntoa ( gateway ) );

                /* Print default routes with local subnets */
                list_for_each_entry ( defroute, &ipv4_miniroutes, list ) {
                        if ( ( defroute->netdev == netdev ) &&
                             ( defroute->address.s_addr = address.s_addr ) &&
                             ( ! defroute->netmask.s_addr ) && ( ! remote ) ) {
                                printf ( " gw %s",
                                         inet_ntoa ( defroute->gateway ) );
                        }
                }

                /* Print trailer */
                if ( ! netdev_is_open ( netdev ) )
                        printf ( " (inaccessible)" );
                printf ( "\n" );
        }
}

References address, ipv4_miniroute::address, assert(), ipv4_miniroute::gateway, inet_ntoa(), ipv4_miniroutes, list_for_each_entry, net_device::name, netdev, ipv4_miniroute::netdev, netdev_is_open(), ipv4_miniroute::netmask, ipv4_miniroute::network, printf(), and in_addr::s_addr.

__routing_family()

struct routing_family ipv4_routing_family __routing_family

(

ROUTING_IPV4

)

IPv4 routing family.