From 52eeeb8481d705e61e2e9aae974e7799a93783e9 Mon Sep 17 00:00:00 2001 From: YOSHIFUJI Hideaki Date: Sat, 15 Mar 2008 22:54:23 -0400 Subject: [IPV6]: Unify ip6_onlink() and ipip6_onlink(). Both are identical, let's create ipv6_chk_prefix() and use it in both places. --- net/ipv6/addrconf.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'net/ipv6/addrconf.c') diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 5ab9973571e..c17f8c0b933 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -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) { -- cgit v1.2.3-70-g09d2