diff options
author | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2008-03-16 03:54:23 +0100 |
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committer | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2008-04-03 03:06:00 +0200 |
commit | 52eeeb8481d705e61e2e9aae974e7799a93783e9 (patch) | |
tree | 6ced371b81334f07926e7bdc190fc2efa396659f /net | |
parent | [IPV6] NDISC: Ignore route information with /0 prefix from interior router. (diff) | |
download | linux-52eeeb8481d705e61e2e9aae974e7799a93783e9.tar.xz linux-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')
-rw-r--r-- | net/ipv6/addrconf.c | 25 | ||||
-rw-r--r-- | net/ipv6/anycast.c | 25 | ||||
-rw-r--r-- | net/ipv6/sit.c | 27 |
3 files changed, 27 insertions, 50 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) { diff --git a/net/ipv6/anycast.c b/net/ipv6/anycast.c index 463bd95d6b13..36e817492095 100644 --- a/net/ipv6/anycast.c +++ b/net/ipv6/anycast.c @@ -48,29 +48,6 @@ static int ipv6_dev_ac_dec(struct net_device *dev, struct in6_addr *addr); /* Big ac list lock for all the sockets */ static DEFINE_RWLOCK(ipv6_sk_ac_lock); -static int -ip6_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; -} /* * socket join an anycast group @@ -142,7 +119,7 @@ int ipv6_sock_ac_join(struct sock *sk, int ifindex, struct in6_addr *addr) * This obviates the need for propagating anycast routes while * still allowing some non-router anycast participation. */ - if (!ip6_onlink(addr, dev)) { + if (!ipv6_chk_prefix(addr, dev)) { if (ishost) err = -EADDRNOTAVAIL; if (err) diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 08a483a8de50..cc16fe07bbff 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -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; |