netdev - Re: [PATCH net-next] openvswitch: add seqadj extension when NAT is used.

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Message-ID: <CAOrHB_CActmZPWipq6chM0SXAkTsODuHFyVMTdL8idCjB-Vecw@mail.gmail.com>
Date:   Sat, 23 Mar 2019 12:32:37 -0700
From:   Pravin Shelar <pshelar@....org>
To:     Flavio Leitner <fbl@...close.org>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Joe Stringer <joe@....org>, ovs dev <dev@...nvswitch.org>,
        netfilter-devel@...r.kernel.org
Subject: Re: [PATCH net-next] openvswitch: add seqadj extension when NAT is used.

On Thu, Mar 21, 2019 at 9:52 AM Flavio Leitner <fbl@...close.org> wrote:
>
> When the conntrack is initialized, there is no helper attached
> yet so the nat info initialization (nf_nat_setup_info) skips
> adding the seqadj ext.
>
> A helper is attached later when the conntrack is not confirmed
> but is going to be committed. In this case, if NAT is needed then
> adds the seqadj ext as well.
>
> Fixes: 16ec3d4fbb96 ("openvswitch: Fix cached ct with helper.")
> Signed-off-by: Flavio Leitner <fbl@...close.org>
> ---
>  net/openvswitch/conntrack.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
I am not able to apply this patch.

> diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
> index 1b6896896fff..a7664515c943 100644
> --- a/net/openvswitch/conntrack.c
> +++ b/net/openvswitch/conntrack.c
> @@ -990,6 +990,11 @@ static int __ovs_ct_lookup(struct net *net, struct sw_flow_key *key,
>                                                             GFP_ATOMIC);
>                         if (err)
>                                 return err;
> +
> +                       if (info->nat && nfct_help(ct) && !nfct_seqadj(ct)) {
Given helper is just assigned, is nfct_help() check required here?

> +                               if (!nfct_seqadj_ext_add(ct))
> +                                       return -EINVAL;
> +                       }
>                 }
>
>                 /* Call the helper only if:
> --
> 2.20.1
>
>
>