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| author | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2008-03-15 22:54:23 -0400 |
|---|---|---|
| committer | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2008-04-03 10:06:00 +0900 |
| commit | 52eeeb8481d705e61e2e9aae974e7799a93783e9 (patch) | |
| tree | 6ced371b81334f07926e7bdc190fc2efa396659f /net/ipv6/addrconf.c | |
| parent | 6294e000736401d4415ad41f408e56e14aaaf7b4 (diff) | |
| download | lwn-52eeeb8481d705e61e2e9aae974e7799a93783e9.tar.gz lwn-52eeeb8481d705e61e2e9aae974e7799a93783e9.zip | |
[IPV6]: Unify ip6_onlink() and ipip6_onlink().
Both are identical, let's create ipv6_chk_prefix() and use it
in both places.
Diffstat (limited to 'net/ipv6/addrconf.c')
| -rw-r--r-- | net/ipv6/addrconf.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 5ab9973571ef..c17f8c0b933e 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) { |