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[NETNS][IPV6]: inet6_addr - check ipv6 address per namespace

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When a new address is added, we must check if the new address does not
already exists.  This patch makes this check to be aware of a network
namespace, so the check will look if the address already exists for
the specified network namespace. While the addresses are browsed, the
addresses which do not belong to the 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>
This commit is contained in:
Daniel Lezcano
2008-01-10 22:43:18 -08:00
committed by David S. Miller
parent 3c40090a0f
commit bfeade0870
10 changed files with 23 additions and 15 deletions
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6
net/ipv6/addrconf.c
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@@ -1206,13 +1206,16 @@ static int ipv6_count_addresses(struct inet6_dev *idev)
return cnt;
}
int ipv6_chk_addr(struct in6_addr *addr, struct net_device *dev, int strict)
int ipv6_chk_addr(struct net *net, struct in6_addr *addr,
struct net_device *dev, int strict)
{
struct inet6_ifaddr * ifp;
u8 hash = ipv6_addr_hash(addr);
read_lock_bh(&addrconf_hash_lock);
for(ifp = inet6_addr_lst[hash]; ifp; ifp=ifp->lst_next) {
if (ifp->idev->dev->nd_net != net)
continue;
if (ipv6_addr_equal(&ifp->addr, addr) &&
!(ifp->flags&IFA_F_TENTATIVE)) {
if (dev == NULL || ifp->idev->dev == dev ||
@@ -1223,7 +1226,6 @@ int ipv6_chk_addr(struct in6_addr *addr, struct net_device *dev, int strict)
read_unlock_bh(&addrconf_hash_lock);
return ifp != NULL;
}
EXPORT_SYMBOL(ipv6_chk_addr);
static