diff options
| author |   Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> | 2007-05-10 14:16:24 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@sunset.davemloft.net> | 2007-05-10 23:47:48 -0700 |
| commit | 5d78a84913abc1b2ef1ec0c14a78ec99517cc122 (patch) | |
| tree | 9b82e98f371ea2d9db40028ed473fc39ddbfbdee /net | |
| parent | [NETFILTER]: ctnetlink: clear helper area and handle unchanged helper (diff) | |
| download | linux-dev-5d78a84913abc1b2ef1ec0c14a78ec99517cc122.tar.xz linux-dev-5d78a84913abc1b2ef1ec0c14a78ec99517cc122.zip | |
[NETFILTER]: nf_nat: Clears helper private area when NATing
Some helpers (eg. ftp) assume that private area in conntrack is
filled with zero. It should be cleared when helper is changed.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/nf_conntrack_core.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 94000a4c7dcf..e8b5c2d7db62 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -888,8 +888,13 @@ void nf_conntrack_alter_reply(struct nf_conn *ct, NF_CT_DUMP_TUPLE(newreply); ct->tuplehash[IP_CT_DIR_REPLY].tuple = *newreply; - if (!ct->master && help && help->expecting == 0) - help->helper = __nf_ct_helper_find(newreply); + if (!ct->master && help && help->expecting == 0) { + struct nf_conntrack_helper *helper; + helper = __nf_ct_helper_find(newreply); + if (helper) + memset(&help->help, 0, sizeof(help->help)); + help->helper = helper; + } write_unlock_bh(&nf_conntrack_lock); } EXPORT_SYMBOL_GPL(nf_conntrack_alter_reply); |