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[NET]: Multiple namespaces in the all dst_ifdown routines. 

Move dst entries to a namespace loopback to catch refcounting leaks.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Denis V. Lunev 2007-12-07 00:38:10 -08:00 committed by David S. Miller
parent b84a2189c4
commit 5a3e55d68e
6 changed files with 15 additions and 9 deletions
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4
net/core/dst.c
View File

@ -279,11 +279,11 @@ static inline void dst_ifdown(struct dst_entry *dst, struct net_device *dev,
if (!unregister) {
dst->input = dst->output = dst_discard;
} else {
dst->dev = init_net.loopback_dev;
dst->dev = dst->dev->nd_net->loopback_dev;
dev_hold(dst->dev);
dev_put(dev);
if (dst->neighbour && dst->neighbour->dev == dev) {
dst->neighbour->dev = init_net.loopback_dev;
dst->neighbour->dev = dst->dev;
dev_put(dev);
dev_hold(dst->neighbour->dev);
}

5
net/ipv4/route.c
View File

@ -1512,8 +1512,9 @@ static void ipv4_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
{
struct rtable *rt = (struct rtable *) dst;
struct in_device *idev = rt->idev;
if (dev != init_net.loopback_dev && idev && idev->dev == dev) {
struct in_device *loopback_idev = in_dev_get(init_net.loopback_dev);
if (dev != dev->nd_net->loopback_dev && idev && idev->dev == dev) {
struct in_device *loopback_idev =
in_dev_get(dev->nd_net->loopback_dev);
if (loopback_idev) {
rt->idev = loopback_idev;
in_dev_put(idev);

3
net/ipv4/xfrm4_policy.c
View File

@ -214,7 +214,8 @@ static void xfrm4_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
xdst = (struct xfrm_dst *)dst;
if (xdst->u.rt.idev->dev == dev) {
struct in_device *loopback_idev = in_dev_get(init_net.loopback_dev);
struct in_device *loopback_idev =
in_dev_get(dev->nd_net->loopback_dev);
BUG_ON(!loopback_idev);
do {

7
net/ipv6/route.c
View File

@ -216,9 +216,12 @@ static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
{
struct rt6_info *rt = (struct rt6_info *)dst;
struct inet6_dev *idev = rt->rt6i_idev;
struct net_device *loopback_dev =
dev->nd_net->loopback_dev;
if (dev != init_net.loopback_dev && idev != NULL && idev->dev == dev) {
struct inet6_dev *loopback_idev = in6_dev_get(init_net.loopback_dev);
if (dev != loopback_dev && idev != NULL && idev->dev == dev) {
struct inet6_dev *loopback_idev =
in6_dev_get(loopback_dev);
if (loopback_idev != NULL) {
rt->rt6i_idev = loopback_idev;
in6_dev_put(idev);

3
net/ipv6/xfrm6_policy.c
View File

@ -229,7 +229,8 @@ static void xfrm6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
xdst = (struct xfrm_dst *)dst;
if (xdst->u.rt6.rt6i_idev->dev == dev) {
struct inet6_dev *loopback_idev = in6_dev_get(init_net.loopback_dev);
struct inet6_dev *loopback_idev =
in6_dev_get(dev->nd_net->loopback_dev);
BUG_ON(!loopback_idev);
do {

2
net/xfrm/xfrm_policy.c
View File

@ -1934,7 +1934,7 @@ static int stale_bundle(struct dst_entry *dst)
void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev)
{
while ((dst = dst->child) && dst->xfrm && dst->dev == dev) {
dst->dev = init_net.loopback_dev;
dst->dev = dev->nd_net->loopback_dev;
dev_hold(dst->dev);
dev_put(dev);
}