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netfilter: flowtable: fixup UDP timeout depending on ct state

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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 <vladbu@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Buslov 2023-02-01 17:30:55 +01:00 committed by David S. Miller
parent 29744a10c5
commit 0eb5acb164
1 changed files with 4 additions and 1 deletions
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5
net/netfilter/nf_flow_table_core.c
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@ -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;