Use SO_BINDTODEVICE also in Linux/IPv6.

This commit is contained in:
Ondrej Zajicek 2010-04-02 16:11:46 +02:00
parent 97ab4c3498
commit e7b09e4ab9
4 changed files with 24 additions and 12 deletions

View file

@ -66,17 +66,7 @@ ospf_sk_open(struct ospf_iface *ifa)
sk = sk_new(p->pool); sk = sk_new(p->pool);
sk->type = SK_IP; sk->type = SK_IP;
sk->dport = OSPF_PROTO; sk->dport = OSPF_PROTO;
#ifdef OSPFv2
/*
* In Linux IPv4, binding a raw socket to an IP address of an iface causes
* that the socket does not receive multicast packets, as they have
* different (multicast) destination IP address.
*/
sk->saddr = IPA_NONE; sk->saddr = IPA_NONE;
#else /* OSPFv3 */
sk->saddr = ifa->addr->ip; /* link-local addr */
#endif
sk->tos = IP_PREC_INTERNET_CONTROL; sk->tos = IP_PREC_INTERNET_CONTROL;
sk->rx_hook = ospf_rx_hook; sk->rx_hook = ospf_rx_hook;

View file

@ -22,6 +22,14 @@ get_inaddr(ip_addr *a, struct in6_addr *ia)
ipa_ntoh(*a); ipa_ntoh(*a);
} }
static inline char *
sysio_bind_to_iface(sock *s)
{
/* Unfortunately not available */
return NULL;
}
#else #else
#include <net/if.h> #include <net/if.h>

View file

@ -6,6 +6,8 @@
* Can be freely distributed and used under the terms of the GNU GPL. * Can be freely distributed and used under the terms of the GNU GPL.
*/ */
#include <net/if.h>
#ifdef IPV6 #ifdef IPV6
#ifndef IPV6_UNICAST_HOPS #ifndef IPV6_UNICAST_HOPS
@ -28,9 +30,18 @@ get_inaddr(ip_addr *a, struct in6_addr *ia)
ipa_ntoh(*a); ipa_ntoh(*a);
} }
#else static inline char *
sysio_bind_to_iface(sock *s)
{
struct ifreq ifr;
strcpy(ifr.ifr_name, s->iface->name);
if (setsockopt(s->fd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr)) < 0)
return "SO_BINDTODEVICE";
#include <net/if.h> return NULL;
}
#else
static inline void static inline void
set_inaddr(struct in_addr *ia, ip_addr a) set_inaddr(struct in_addr *ia, ip_addr a)

View file

@ -876,6 +876,9 @@ sk_setup_multicast(sock *s)
if (setsockopt(s->fd, SOL_IPV6, IPV6_MULTICAST_IF, &index, sizeof(index)) < 0) if (setsockopt(s->fd, SOL_IPV6, IPV6_MULTICAST_IF, &index, sizeof(index)) < 0)
ERR("IPV6_MULTICAST_IF"); ERR("IPV6_MULTICAST_IF");
if (err = sysio_bind_to_iface(s))
goto bad;
return 0; return 0;
bad: bad: