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[NETNS][IPV6]: inet6_addr - ipv6_chk_same_addr namespace aware

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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>
This commit is contained in:
Daniel Lezcano 2008-01-10 22:43:42 -08:00 committed by David S. Miller
parent bfeade0870
commit 06bfe655e7
1 changed files with 7 additions and 3 deletions
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10
net/ipv6/addrconf.c
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@ -149,7 +149,8 @@ static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa);
static void inet6_prefix_notify(int event, struct inet6_dev *idev,
struct prefix_info *pinfo);
static int ipv6_chk_same_addr(const struct in6_addr *addr, struct net_device *dev);
static int ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
struct net_device *dev);
static ATOMIC_NOTIFIER_HEAD(inet6addr_chain);
@ -560,7 +561,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
write_lock(&addrconf_hash_lock);
/* Ignore adding duplicate addresses on an interface */
if (ipv6_chk_same_addr(addr, idev->dev)) {
if (ipv6_chk_same_addr(&init_net, addr, idev->dev)) {
ADBG(("ipv6_add_addr: already assigned\n"));
err = -EEXIST;
goto out;
@ -1229,12 +1230,15 @@ int ipv6_chk_addr(struct net *net, struct in6_addr *addr,
EXPORT_SYMBOL(ipv6_chk_addr);
static
int ipv6_chk_same_addr(const struct in6_addr *addr, struct net_device *dev)
int ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
struct net_device *dev)
{
struct inet6_ifaddr * ifp;
u8 hash = ipv6_addr_hash(addr);
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)) {
if (dev == NULL || ifp->idev->dev == dev)
break;