[PATCH net-next v2 2/7] netfilter: flowtable: fixup UDP timeout depending on ct state
From: Vlad Buslov <hidden>
Date: 2023-01-13 16:56:54
Also in:
netfilter-devel
Subsystem:
netfilter, networking [general], the rest · Maintainers:
Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Currently flow_offload_fixup_ct() function assumes that only replied UDP connections can be offloaded and hardcodes UDP_CT_REPLIED timeout value. To enable UDP NEW connection offload in following patches extract the actual connections state from ct->status and set the timeout according to it. Signed-off-by: Vlad Buslov <redacted> --- net/netfilter/nf_flow_table_core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/net/netfilter/nf_flow_table_core.c b/net/netfilter/nf_flow_table_core.c
index 81c26a96c30b..04bd0ed4d2ae 100644
--- a/net/netfilter/nf_flow_table_core.c
+++ b/net/netfilter/nf_flow_table_core.c@@ -193,8 +193,11 @@ static void flow_offload_fixup_ct(struct nf_conn *ct) timeout -= tn->offload_timeout; } else if (l4num == IPPROTO_UDP) { struct nf_udp_net *tn = nf_udp_pernet(net); + enum udp_conntrack state = + test_bit(IPS_SEEN_REPLY_BIT, &ct->status) ? + UDP_CT_REPLIED : UDP_CT_UNREPLIED; - timeout = tn->timeouts[UDP_CT_REPLIED]; + timeout = tn->timeouts[state]; timeout -= tn->offload_timeout; } else { return;
--
2.38.1