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platform: set link scope for IP4LL addresses

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https://bugzilla.gnome.org/show_bug.cgi?id=728595

[thaller@redhat.com: minor change in coding style]
Signed-off-by: Thomas Haller <thaller@redhat.com>
This commit is contained in:
Peter Wu 2014-04-20 16:54:59 +02:00 • committed by Thomas Haller
parent c0254336ce
commit a2eb4789ac
1 changed files with 13 additions and 0 deletions
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13
src/platform/nm-linux-platform.c
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@ -2989,6 +2989,15 @@ addr4_to_broadcast (struct in_addr *dst, const struct in_addr *src, guint8 plen)
} }
} }
#define IPV4LL_NETWORK (htonl (0xA9FE0000L))
#define IPV4LL_NETMASK (htonl (0xFFFF0000L))
static gboolean
ip4_is_link_local (const struct in_addr *src)
{
return (src->s_addr & IPV4LL_NETMASK) == IPV4LL_NETWORK;
}
static struct nl_object * static struct nl_object *
build_rtnl_addr (int family, build_rtnl_addr (int family,
int ifindex, int ifindex,
@ -3012,6 +3021,10 @@ build_rtnl_addr (int family,
nle = rtnl_addr_set_local (rtnladdr, nladdr); nle = rtnl_addr_set_local (rtnladdr, nladdr);
g_assert (!nle); g_assert (!nle);
/* Tighten scope (IPv4 only) */
if (family == AF_INET && ip4_is_link_local (addr))
rtnl_addr_set_scope (rtnladdr, rtnl_str2scope ("link"));
/* IPv4 Broadcast address */ /* IPv4 Broadcast address */
if (family == AF_INET) { if (family == AF_INET) {
struct in_addr bcast; struct in_addr bcast;