On Fri, 2013-06-14 at 23:30 +1200, Aydin Arik wrote:
> MD5 key lookups on a given TCP socket were being performed
> incorrectly. This fix alters parameter inputs to the MD5
> lookup function tcp_md5_do_lookup, which is called by functions
> tcp_md5_do_add and tcp_md5_do_del. Specifically, the change now
> inputs the correct address and address family required to make
> a proper lookup.
>
> Commit a915da9b69273815527ccb3789421cb7027b545b ("tcp: md5: rcu conversion")
> is the source of the regression.
>
> Signed-off-by: Aydin Arik <aydin.a...@alliedtelesis.co.nz>
> ---
> net/ipv4/tcp_ipv4.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
> index d09203c..da84cdb 100644
> --- a/net/ipv4/tcp_ipv4.c
> +++ b/net/ipv4/tcp_ipv4.c
> @@ -1005,7 +1005,7 @@ int tcp_md5_do_add(struct sock *sk, const union
> tcp_md5_addr *addr,
> struct tcp_sock *tp = tcp_sk(sk);
> struct tcp_md5sig_info *md5sig;
>
> - key = tcp_md5_do_lookup(sk, (union tcp_md5_addr *)&addr, AF_INET);
> + key = tcp_md5_do_lookup(sk, addr, family);
> if (key) {
> /* Pre-existing entry - just update that one. */
> memcpy(key->key, newkey, newkeylen);
> @@ -1050,7 +1050,7 @@ int tcp_md5_do_del(struct sock *sk, const union
> tcp_md5_addr *addr, int family)
> struct tcp_md5sig_key *key;
> struct tcp_md5sig_info *md5sig;
>
> - key = tcp_md5_do_lookup(sk, (union tcp_md5_addr *)&addr, AF_INET);
> + key = tcp_md5_do_lookup(sk, addr, family);
> if (!key)
> return -ENOENT;
> hlist_del_rcu(&key->node);
Thanks !
Acked-by: Eric Dumazet <eduma...@google.com>
(No need for "[PATCH 1/1] " for a single patch)
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