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[SRU,F:linux-bluefield,05/10] netfilter: flowtable: Make sure GC works periodically in idle system

Message ID 1666906019-80328-6-git-send-email-bodong@nvidia.com
State New
Headers show
Series Increase stability with connection tracking offload | expand

Commit Message

Bodong Wang Oct. 27, 2022, 9:26 p.m. UTC 
From: Yinjun Zhang <yinjun.zhang@corigine.com>

BugLink: https://bugs.launchpad.net/bugs/1995004

Currently flowtable's GC work is initialized as deferrable, which
means GC cannot work on time when system is idle. So the hardware
offloaded flow may be deleted for timeout, since its used time is
not timely updated.

Resolve it by initializing the GC work as delayed work instead of
deferrable.

Fixes: c29f74e0df7a ("netfilter: nf_flow_table: hardware offload support")
Change-Id: I99843e5974c9bbb41dfbaf1dc062e538e1938f34
Signed-off-by: Yinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Bodong Wang <bodong@nvidia.com>
---
 net/netfilter/nf_flow_table_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/net/netfilter/nf_flow_table_core.c b/net/netfilter/nf_flow_table_core.c
index dd29f4f..d60a206 100644
--- a/net/netfilter/nf_flow_table_core.c
+++ b/net/netfilter/nf_flow_table_core.c
@@ -522,7 +522,7 @@  int nf_flow_table_init(struct nf_flowtable *flowtable)
 {
 	int err;
 
-	INIT_DEFERRABLE_WORK(&flowtable->gc_work, nf_flow_offload_work_gc);
+	INIT_DELAYED_WORK(&flowtable->gc_work, nf_flow_offload_work_gc);
 	flow_block_init(&flowtable->flow_block);
 	init_rwsem(&flowtable->flow_block_lock);