diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2022-08-26 08:49:16 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2022-08-31 12:12:32 +0200 |
| commit | b118509076b39cc5e616c0680312b5caaca535fe (patch) | |
| tree | e5b4b13aaf965c1dbe031e047e18d69be848eeab /net/netfilter/nf_conntrack_netlink.c | |
| parent | 13a9d08c296228d18289de60b83792c586e1d073 (diff) | |
netfilter: remove nf_conntrack_helper sysctl and modparam toggles
__nf_ct_try_assign_helper() remains in place but it now requires a
template to configure the helper.
A toggle to disable automatic helper assignment was added by:
a9006892643a ("netfilter: nf_ct_helper: allow to disable automatic helper assignment")
in 2012 to address the issues described in "Secure use of iptables and
connection tracking helpers". Automatic conntrack helper assignment was
disabled by:
3bb398d925ec ("netfilter: nf_ct_helper: disable automatic helper assignment")
back in 2016.
This patch removes the sysctl and modparam toggles, users now have to
rely on explicit conntrack helper configuration via ruleset.
Update tools/testing/selftests/netfilter/nft_conntrack_helper.sh to
check that auto-assignment does not happen anymore.
Acked-by: Aaron Conole <aconole@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nf_conntrack_netlink.c')
| -rw-r--r-- | net/netfilter/nf_conntrack_netlink.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index 04169b54f2a2..7562b215b932 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -2298,11 +2298,6 @@ ctnetlink_create_conntrack(struct net *net, ct->status |= IPS_HELPER; RCU_INIT_POINTER(help->helper, helper); } - } else { - /* try an implicit helper assignation */ - err = __nf_ct_try_assign_helper(ct, NULL, GFP_ATOMIC); - if (err < 0) - goto err2; } err = ctnetlink_setup_nat(ct, cda); |