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[IPV6]: Unify ip6_onlink() and ipip6_onlink().

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Both are identical, let's create ipv6_chk_prefix() and use it
in both places.
This commit is contained in:
YOSHIFUJI Hideaki
2008-03-15 22:54:23 -04:00
parent 6294e00073
commit 52eeeb8481
4 changed files with 31 additions and 50 deletions
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27
net/ipv6/sit.c
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@ -344,31 +344,6 @@ out:
return 0;
}
/* copied directly from anycast.c */
static int
ipip6_onlink(struct in6_addr *addr, struct net_device *dev)
{
struct inet6_dev *idev;
struct inet6_ifaddr *ifa;
int onlink;
onlink = 0;
rcu_read_lock();
idev = __in6_dev_get(dev);
if (idev) {
read_lock_bh(&idev->lock);
for (ifa=idev->addr_list; ifa; ifa=ifa->if_next) {
onlink = ipv6_prefix_equal(addr, &ifa->addr,
ifa->prefix_len);
if (onlink)
break;
}
read_unlock_bh(&idev->lock);
}
rcu_read_unlock();
return onlink;
}
static int
isatap_chksrc(struct sk_buff *skb, struct iphdr *iph, struct ip_tunnel *t)
{
@ -386,7 +361,7 @@ isatap_chksrc(struct sk_buff *skb, struct iphdr *iph, struct ip_tunnel *t)
struct in6_addr *addr6 = &ipv6_hdr(skb)->saddr;
if (ipv6_addr_is_isatap(addr6) &&
(addr6->s6_addr32[3] == iph->saddr) &&
ipip6_onlink(addr6, t->dev))
ipv6_chk_prefix(addr6, t->dev))
skb->ndisc_nodetype = NDISC_NODETYPE_HOST;
else
ok = 0;