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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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25
net/ipv6/addrconf.c
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@@ -1249,6 +1249,31 @@ int ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
return ifp != NULL;
}
int ipv6_chk_prefix(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;
}
EXPORT_SYMBOL(ipv6_chk_prefix);
struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, struct in6_addr *addr,
struct net_device *dev, int strict)
{