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nfp: flower: refactor function "is_pre_ct_flow"

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In the scenario of multiple ct zones, ct state key match and ct action
is present in one flow rule, the flow rule is classified to post_ct_flow
in design.

There is no ct state key match for pre ct flow, the judging condition
is added to function "is_pre_ct_flow".

Chain_index is another field for judging which flows are pre ct flow
If chain_index not 0, the flow is not pre ct flow.

Signed-off-by: Wentao Jia <wentao.jia@corigine.com>
Acked-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Wentao Jia
2023-03-14 08:36:06 +02:00
committed by Jakub Kicinski
parent 8a8db7aeaa
commit cee7b339d8
1 changed files with 12 additions and 0 deletions
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12
drivers/net/ethernet/netronome/nfp/flower/conntrack.c
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@@ -55,9 +55,21 @@ static void *get_hashentry(struct rhashtable *ht, void *key,
bool is_pre_ct_flow(struct flow_cls_offload *flow)
{
struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
struct flow_dissector *dissector = rule->match.dissector;
struct flow_action_entry *act;
struct flow_match_ct ct;
int i;
if (dissector->used_keys & BIT(FLOW_DISSECTOR_KEY_CT)) {
flow_rule_match_ct(rule, &ct);
if (ct.key->ct_state)
return false;
}
if (flow->common.chain_index)
return false;
flow_action_for_each(i, act, &flow->rule->action) {
if (act->id == FLOW_ACTION_CT) {
/* The pre_ct rule only have the ct or ct nat action, cannot