From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org
Subject: [PATCH net 9/9] netfilter: nftables: skip hook overlap logic if flowtable is stale
Date: Fri, 19 Mar 2021 02:06:08 +0100 [thread overview]
Message-ID: <20210319010608.9758-10-pablo@netfilter.org> (raw)
In-Reply-To: <20210319010608.9758-1-pablo@netfilter.org>
If the flowtable has been previously removed in this batch, skip the
hook overlap checks. This fixes spurious EEXIST errors when removing and
adding the flowtable in the same batch.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nf_tables_api.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 4fcd07f1e925..f57f1a6ba96f 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -6783,6 +6783,9 @@ static int nft_register_flowtable_net_hooks(struct net *net,
list_for_each_entry(hook, hook_list, list) {
list_for_each_entry(ft, &table->flowtables, list) {
+ if (!nft_is_active_next(net, ft))
+ continue;
+
list_for_each_entry(hook2, &ft->hook_list, list) {
if (hook->ops.dev == hook2->ops.dev &&
hook->ops.pf == hook2->ops.pf) {
--
2.20.1
prev parent reply other threads:[~2021-03-19 1:07 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-19 1:05 [PATCH net 0/9] Netfilter fixes for net Pablo Neira Ayuso
2021-03-19 1:06 ` [PATCH net 1/9] Revert "netfilter: x_tables: Update remaining dereference to RCU" Pablo Neira Ayuso
2021-03-19 1:06 ` [PATCH net 2/9] Revert "netfilter: x_tables: Switch synchronization " Pablo Neira Ayuso
2021-03-19 1:06 ` [PATCH net 3/9] netfilter: x_tables: Use correct memory barriers Pablo Neira Ayuso
2021-03-19 1:06 ` [PATCH net 4/9] netfilter: ctnetlink: fix dump of the expect mask attribute Pablo Neira Ayuso
2021-03-19 1:06 ` [PATCH net 5/9] netfilter: conntrack: Fix gre tunneling over ipv6 Pablo Neira Ayuso
2021-03-19 1:06 ` [PATCH net 6/9] netfilter: nftables: report EOPNOTSUPP on unsupported flowtable flags Pablo Neira Ayuso
2021-03-19 1:06 ` [PATCH net 7/9] netfilter: nftables: allow to update " Pablo Neira Ayuso
2021-03-19 1:06 ` [PATCH net 8/9] netfilter: flowtable: Make sure GC works periodically in idle system Pablo Neira Ayuso
2021-03-19 1:06 ` Pablo Neira Ayuso [this message]
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