From 556192470f356cf48d6903dec5a323376a023546 Mon Sep 17 00:00:00 2001
From: Paul Blakey <paulb@nvidia.com>
Date: Wed, 22 Mar 2023 09:35:32 +0200
Subject: [PATCH] netfilter: ctnetlink: Support offloaded conntrack entry
deletion
commit 9b7c68b3911aef84afa4cbfc31bce20f10570d51 upstream.
Currently, offloaded conntrack entries (flows) can only be deleted
after they are removed from offload, which is either by timeout,
tcp state change or tc ct rule deletion. This can cause issues for
users wishing to manually delete or flush existing entries.
Support deletion of offloaded conntrack entries.
Example usage:
# Delete all offloaded (and non offloaded) conntrack entries
# whose source address is 1.2.3.4
$ conntrack -D -s 1.2.3.4
# Delete all entries
$ conntrack -F
Signed-off-by: Paul Blakey <paulb@nvidia.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Cc: Demi Marie Obenour <demi@invisiblethingslab.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/netfilter/nf_conntrack_netlink.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 8776e75b200f..0b8b8cb42a8a 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -1546,9 +1546,6 @@ static const struct nla_policy ct_nla_policy[CTA_MAX+1] = {
static int ctnetlink_flush_iterate(struct nf_conn *ct, void *data)
{
- if (test_bit(IPS_OFFLOAD_BIT, &ct->status))
- return 0;
-
return ctnetlink_filter_match(ct, data);
}
@@ -1612,11 +1609,6 @@ static int ctnetlink_del_conntrack(struct sk_buff *skb,
ct = nf_ct_tuplehash_to_ctrack(h);
- if (test_bit(IPS_OFFLOAD_BIT, &ct->status)) {
- nf_ct_put(ct);
- return -EBUSY;
- }
-
if (cda[CTA_ID]) {
__be32 id = nla_get_be32(cda[CTA_ID]);