netdev - Re: [PATCH 2/3 bpf-next] i40e: Support zero-copy XDP_TX on the RX path for AF

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Date:   Tue, 2 Jul 2019 07:07:27 +0000
From:   Maxim Mikityanskiy <maximmi@...lanox.com>
To:     Jonathan Lemon <jonathan.lemon@...il.com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "bjorn.topel@...el.com" <bjorn.topel@...el.com>,
        "magnus.karlsson@...el.com" <magnus.karlsson@...el.com>,
        "jakub.kicinski@...ronome.com" <jakub.kicinski@...ronome.com>,
        "jeffrey.t.kirsher@...el.com" <jeffrey.t.kirsher@...el.com>,
        "kernel-team@...com" <kernel-team@...com>
Subject: Re: [PATCH 2/3 bpf-next] i40e: Support zero-copy XDP_TX on the RX
 path for AF_XDP sockets.

On 2019-06-29 01:15, Jonathan Lemon wrote:
> +	xdpf = convert_to_xdp_frame_keep_zc(xdp);
> +	if (unlikely(!xdpf))
> +		return I40E_XDP_CONSUMED;
> +	xdpf->handle = xdp->handle;

Shouldn't this line belong to convert_to_xdp_frame_keep_zc (and the 
previous patch)? It looks like it's code common for all drivers, and 
also patch 1 adds the handle field, but doesn't use it, which looks weird.