On Fri 13 Jan 2023 at 10:12, Simon Horman <simon.horman@xxxxxxxxxxxx> wrote:
> + Baowen Zheng, oss-drivers@xxxxxxxxxxxx
>
> On Tue, Jan 10, 2023 at 02:30:17PM +0100, Vlad Buslov wrote:
>> In order to offload connections in other states besides "established" the
>> driver offload callbacks need to have access to connection conntrack info.
>> Extend flow offload intermediate representation data structure
>> flow_action_entry->ct_metadata with new enum ip_conntrack_info field and
>> fill it in tcf_ct_flow_table_add_action_meta() callback.
>>
>> Reject offloading IP_CT_NEW connections for now by returning an error in
>> relevant driver callbacks based on value of ctinfo. Support for offloading
>> such connections will need to be added to the drivers afterwards.
>>
>> Signed-off-by: Vlad Buslov <vladbu@xxxxxxxxxx>
>> ---
>
> ...
>
>> diff --git a/drivers/net/ethernet/netronome/nfp/flower/conntrack.c b/drivers/net/ethernet/netronome/nfp/flower/conntrack.c
>> index f693119541d5..2c550a1792b7 100644
>> --- a/drivers/net/ethernet/netronome/nfp/flower/conntrack.c
>> +++ b/drivers/net/ethernet/netronome/nfp/flower/conntrack.c
>> @@ -1964,6 +1964,23 @@ int nfp_fl_ct_stats(struct flow_cls_offload *flow,
>> return 0;
>> }
>>
>> +static bool
>> +nfp_fl_ct_offload_supported(struct flow_cls_offload *flow)
>> +{
>> + struct flow_rule *flow_rule = flow->rule;
>> + struct flow_action *flow_action =
>> + &flow_rule->action;
>> + struct flow_action_entry *act;
>> + int i;
>> +
>> + flow_action_for_each(i, act, flow_action) {
>> + if (act->id == FLOW_ACTION_CT_METADATA)
>> + return act->ct_metadata.ctinfo != IP_CT_NEW;
>> + }
>> +
>> + return false;
>> +}
>> +
>
> Hi Vlad,
>
> Some feedback from Baowen Zheng, who asked me to pass it on here:
>
> It is confusing that after FLOW_ACTION_CT_METADATA check, this functoin
> will return false, that is -EOPNOTSUPP.
>
> Since this function is only used to check nft table, It seems better to
> change its name to nfp_fl_ct_offload_nft_supported(). This would make things
> clearer and may avoid it being used in the wrong way.
Thanks for the suggestions! I will change the naming and send V2.
