diff options
| author | Paul Moore <pmoore@redhat.com> | 2013-05-29 07:36:25 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-05-31 17:30:07 -0700 |
| commit | e4c1721642bbd42d8142f4811cde0588c28db51d (patch) | |
| tree | 8f7750f6065dcb5d2bd727174fb9f4e3cd8fccf3 /net | |
| parent | 1e2bd517c108816220f262d7954b697af03b5f9c (diff) | |
| download | op-kernel-dev-e4c1721642bbd42d8142f4811cde0588c28db51d.zip op-kernel-dev-e4c1721642bbd42d8142f4811cde0588c28db51d.tar.gz | |
xfrm: force a garbage collection after deleting a policy
In some cases after deleting a policy from the SPD the policy would
remain in the dst/flow/route cache for an extended period of time
which caused problems for SELinux as its dynamic network access
controls key off of the number of XFRM policy and state entries.
This patch corrects this problem by forcing a XFRM garbage collection
whenever a policy is sucessfully removed.
Reported-by: Ondrej Moris <omoris@redhat.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/key/af_key.c | 4 | ||||
| -rw-r--r-- | net/xfrm/xfrm_policy.c | 3 | ||||
| -rw-r--r-- | net/xfrm/xfrm_user.c | 2 |
3 files changed, 8 insertions, 1 deletions
diff --git a/net/key/af_key.c b/net/key/af_key.c index 5b1e5af..c5fbd75 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -2366,6 +2366,8 @@ static int pfkey_spddelete(struct sock *sk, struct sk_buff *skb, const struct sa out: xfrm_pol_put(xp); + if (err == 0) + xfrm_garbage_collect(net); return err; } @@ -2615,6 +2617,8 @@ static int pfkey_spdget(struct sock *sk, struct sk_buff *skb, const struct sadb_ out: xfrm_pol_put(xp); + if (delete && err == 0) + xfrm_garbage_collect(net); return err; } diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index 23cea0f..ea970b8 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -2557,11 +2557,12 @@ static void __xfrm_garbage_collect(struct net *net) } } -static void xfrm_garbage_collect(struct net *net) +void xfrm_garbage_collect(struct net *net) { flow_cache_flush(); __xfrm_garbage_collect(net); } +EXPORT_SYMBOL(xfrm_garbage_collect); static void xfrm_garbage_collect_deferred(struct net *net) { diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index aa77874..3f565e4 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -1681,6 +1681,8 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh, out: xfrm_pol_put(xp); + if (delete && err == 0) + xfrm_garbage_collect(net); return err; } |
