netdev - Re: [PATCH net-next v2 1/7] net: flow_offload: provision conntrack info in ct

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Message-ID: <Y8a5AOxlm5XsrYtT@t14s.localdomain>
Date:   Tue, 17 Jan 2023 12:04:32 -0300
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     Vlad Buslov <vladbu@...dia.com>
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        pablo@...filter.org, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org, jhs@...atatu.com,
        xiyou.wangcong@...il.com, jiri@...nulli.us, ozsh@...dia.com,
        simon.horman@...igine.com
Subject: Re: [PATCH net-next v2 1/7] net: flow_offload: provision conntrack
 info in ct_metadata

On Fri, Jan 13, 2023 at 05:55:42PM +0100, Vlad Buslov wrote:
...
>  struct flow_match {
> @@ -288,6 +289,7 @@ struct flow_action_entry {
>  		} ct;
>  		struct {
>  			unsigned long cookie;
> +			enum ip_conntrack_info ctinfo;
>  			u32 mark;
>  			u32 labels[4];
>  			bool orig_dir;
> diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c
> index 0ca2bb8ed026..515577f913a3 100644
> --- a/net/sched/act_ct.c
> +++ b/net/sched/act_ct.c
> @@ -187,6 +187,7 @@ static void tcf_ct_flow_table_add_action_meta(struct nf_conn *ct,
>  	/* aligns with the CT reference on the SKB nf_ct_set */
>  	entry->ct_metadata.cookie = (unsigned long)ct | ctinfo;
                                                   ^^^^^^^^^^^

>  	entry->ct_metadata.orig_dir = dir == IP_CT_DIR_ORIGINAL;
> +	entry->ct_metadata.ctinfo = ctinfo;

tcf_ct_flow_table_restore_skb() is doing:
        enum ip_conntrack_info ctinfo = cookie & NFCT_INFOMASK;

Not sure if it really needs this duplication then.

>  
>  	act_ct_labels = entry->ct_metadata.labels;
>  	ct_labels = nf_ct_labels_find(ct);
> -- 
> 2.38.1
>