From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org,
pabeni@redhat.com, edumazet@google.com
Subject: [PATCH net 5/9] netfilter: nft_set_hash: try later when GC hits EAGAIN on iteration
Date: Wed, 13 Sep 2023 23:57:56 +0200 [thread overview]
Message-ID: <20230913215800.107269-6-pablo@netfilter.org> (raw)
In-Reply-To: <20230913215800.107269-1-pablo@netfilter.org>
Skip GC run if iterator rewinds to the beginning with EAGAIN, otherwise GC
might collect the same element more than once.
Fixes: f6c383b8c31a ("netfilter: nf_tables: adapt set backend to use GC transaction API")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nft_set_hash.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/net/netfilter/nft_set_hash.c b/net/netfilter/nft_set_hash.c
index eca20dc60138..2013de934cef 100644
--- a/net/netfilter/nft_set_hash.c
+++ b/net/netfilter/nft_set_hash.c
@@ -338,12 +338,9 @@ static void nft_rhash_gc(struct work_struct *work)
while ((he = rhashtable_walk_next(&hti))) {
if (IS_ERR(he)) {
- if (PTR_ERR(he) != -EAGAIN) {
- nft_trans_gc_destroy(gc);
- gc = NULL;
- goto try_later;
- }
- continue;
+ nft_trans_gc_destroy(gc);
+ gc = NULL;
+ goto try_later;
}
/* Ruleset has been updated, try later. */
--
2.30.2
next prev parent reply other threads:[~2023-09-13 21:58 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-13 21:57 [PATCH net 0/9] Netfilter fixes for net Pablo Neira Ayuso
2023-09-13 21:57 ` [PATCH net 1/9] netfilter: nf_tables: disallow rule removal from chain binding Pablo Neira Ayuso
2023-09-13 21:57 ` [PATCH net 2/9] netfilter: nft_set_rbtree: use read spinlock to avoid datapath contention Pablo Neira Ayuso
2023-09-13 21:57 ` [PATCH net 3/9] netfilter: nft_set_pipapo: call nft_trans_gc_queue_sync() in catchall GC Pablo Neira Ayuso
2023-09-13 21:57 ` [PATCH net 4/9] netfilter: nft_set_pipapo: stop GC iteration if GC transaction allocation fails Pablo Neira Ayuso
2023-09-13 21:57 ` Pablo Neira Ayuso [this message]
2023-09-13 21:57 ` [PATCH net 6/9] netfilter: nf_tables: disallow element removal on anonymous sets Pablo Neira Ayuso
2023-09-13 21:57 ` [PATCH net 7/9] netfilter: conntrack: fix extension size table Pablo Neira Ayuso
2023-09-13 21:57 ` [PATCH net 8/9] netfilter: nf_tables: Fix entries val in rule reset audit log Pablo Neira Ayuso
2023-09-13 21:58 ` [PATCH net 9/9] selftests: netfilter: Test nf_tables audit logging Pablo Neira Ayuso
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