[PATCH 4.19 01/79] netfilter: nf_flow_table: set default timeout after successful insertion

Greg Kroah-Hartman
2019-09-19T22:12:00Z

From: Pablo Neira Ayuso <pablo@netfilter.org>

commit 110e48725db6262f260f10727d0fb2d3d25895e4 upstream.

Set up the default timeout for this new entry otherwise the garbage
collector might quickly remove it right after the flowtable insertion.

Fixes: ac2a66665e23 ("netfilter: add generic flow table infrastructure")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
net/netfilter/nf_flow_table_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/netfilter/nf_flow_table_core.c
+++ b/net/netfilter/nf_flow_table_core.c
@@ -203,7 +203,7 @@ int flow_offload_add(struct nf_flowtable
return err;
}

- flow->timeout = (u32)jiffies;
+ flow->timeout = (u32)jiffies + NF_FLOW_TIMEOUT;
return 0;
}
EXPORT_SYMBOL_GPL(flow_offload_add);