[NETNS][IPV6]: inet6_addr - ipv6_chk_same_addr namespace aware
This patch makes ipv6_chk_same_addr function to be aware of the network namespace. The addresses not belonging to the network namespace are discarded. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -149,7 +149,8 @@ static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa);
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static void inet6_prefix_notify(int event, struct inet6_dev *idev,
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struct prefix_info *pinfo);
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static int ipv6_chk_same_addr(const struct in6_addr *addr, struct net_device *dev);
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static int ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
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struct net_device *dev);
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static ATOMIC_NOTIFIER_HEAD(inet6addr_chain);
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@ -560,7 +561,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
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write_lock(&addrconf_hash_lock);
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/* Ignore adding duplicate addresses on an interface */
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if (ipv6_chk_same_addr(addr, idev->dev)) {
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if (ipv6_chk_same_addr(&init_net, addr, idev->dev)) {
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ADBG(("ipv6_add_addr: already assigned\n"));
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err = -EEXIST;
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goto out;
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@ -1229,12 +1230,15 @@ int ipv6_chk_addr(struct net *net, struct in6_addr *addr,
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EXPORT_SYMBOL(ipv6_chk_addr);
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static
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int ipv6_chk_same_addr(const struct in6_addr *addr, struct net_device *dev)
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int ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
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struct net_device *dev)
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{
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struct inet6_ifaddr * ifp;
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u8 hash = ipv6_addr_hash(addr);
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for(ifp = inet6_addr_lst[hash]; ifp; ifp=ifp->lst_next) {
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if (ifp->idev->dev->nd_net != net)
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continue;
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if (ipv6_addr_equal(&ifp->addr, addr)) {
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if (dev == NULL || ifp->idev->dev == dev)
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break;
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