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| author | Balazs Scheidler <bazsi@balabit.hu> | 2010-10-21 13:06:43 +0200 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2010-10-21 13:06:43 +0200 |
| commit | 093d282321daeb19c107e5f1f16d7f68484f3ade (patch) | |
| tree | 36e9eed23573068819bf67a91caac6ebf60d0d7c /include/net | |
| parent | 6006db84a91838813cdad8a6622a4e39efe9ea47 (diff) | |
| download | linux-093d282321daeb19c107e5f1f16d7f68484f3ade.tar.gz linux-093d282321daeb19c107e5f1f16d7f68484f3ade.tar.bz2 linux-093d282321daeb19c107e5f1f16d7f68484f3ade.zip | |
tproxy: fix hash locking issue when using port redirection in __inet_inherit_port()
When __inet_inherit_port() is called on a tproxy connection the wrong locks are
held for the inet_bind_bucket it is added to. __inet_inherit_port() made an
implicit assumption that the listener's port number (and thus its bind bucket).
Unfortunately, if you're using the TPROXY target to redirect skbs to a
transparent proxy that assumption is not true anymore and things break.
This patch adds code to __inet_inherit_port() so that it can handle this case
by looking up or creating a new bind bucket for the child socket and updates
callers of __inet_inherit_port() to gracefully handle __inet_inherit_port()
failing.
Reported by and original patch from Stephen Buck <stephen.buck@exinda.com>.
See http://marc.info/?t=128169268200001&r=1&w=2 for the original discussion.
Signed-off-by: KOVACS Krisztian <hidden@balabit.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/inet_hashtables.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h index 74358d1b3f43..e9c2ed8af864 100644 --- a/include/net/inet_hashtables.h +++ b/include/net/inet_hashtables.h @@ -245,7 +245,7 @@ static inline int inet_sk_listen_hashfn(const struct sock *sk) } /* Caller must disable local BH processing. */ -extern void __inet_inherit_port(struct sock *sk, struct sock *child); +extern int __inet_inherit_port(struct sock *sk, struct sock *child); extern void inet_put_port(struct sock *sk); |