netdev - Re: [PATCH RFC v3 5/5] udp: Support UDP fraglist GRO/GSO.

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Message-ID: <CA+FuTSfSpzHCCpDRD2s0fP3u2oyKVKQPOVAp0LLPMPV+W3kFtw@mail.gmail.com>
Date:   Wed, 18 Sep 2019 12:13:26 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Steffen Klassert <steffen.klassert@...unet.com>
Cc:     Network Development <netdev@...r.kernel.org>,
        Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH RFC v3 5/5] udp: Support UDP fraglist GRO/GSO.

On Wed, Sep 18, 2019 at 3:25 AM Steffen Klassert
<steffen.klassert@...unet.com> wrote:
>
> This patch extends UDP GRO to support fraglist GRO/GSO
> by using the previously introduced infrastructure.
> All UDP packets that are not targeted to a GRO capable
> UDP sockets are going to fraglist GRO now (local input
> and forward).
>
> Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com>


> @@ -419,7 +460,7 @@ struct sk_buff *udp_gro_receive(struct list_head *head, struct sk_buff *skb,
>             (skb->ip_summed != CHECKSUM_PARTIAL &&
>              NAPI_GRO_CB(skb)->csum_cnt == 0 &&
>              !NAPI_GRO_CB(skb)->csum_valid))
> -               goto out_unlock;
> +               goto out;
>
>         /* mark that this skb passed once through the tunnel gro layer */
>         NAPI_GRO_CB(skb)->encap_mark = 1;
> @@ -446,8 +487,7 @@ struct sk_buff *udp_gro_receive(struct list_head *head, struct sk_buff *skb,
>         skb_gro_postpull_rcsum(skb, uh, sizeof(struct udphdr));
>         pp = call_gro_receive_sk(udp_sk(sk)->gro_receive, sk, head, skb);
>
> -out_unlock:
> -       rcu_read_unlock();
> +out:
>         skb_gro_flush_final(skb, pp, flush);
>         return pp;
>  }

This probably belongs in patch 1?