netdev - Re: [net-next, PATCH 2/2, v2] net: socionext: add XDP support

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Message-ID: <20180912111457.0121d9f3@redhat.com>
Date:   Wed, 12 Sep 2018 11:14:57 +0200
From:   Jesper Dangaard Brouer <brouer@...hat.com>
To:     Ilias Apalodimas <ilias.apalodimas@...aro.org>
Cc:     netdev@...r.kernel.org, jaswinder.singh@...aro.org,
        ard.biesheuvel@...aro.org, masami.hiramatsu@...aro.org,
        arnd@...db.de, mykyta.iziumtsev@...aro.org, bjorn.topel@...el.com,
        magnus.karlsson@...el.com, daniel@...earbox.net, ast@...nel.org,
        brouer@...hat.com
Subject: Re: [net-next, PATCH 2/2, v2] net: socionext: add XDP support

On Wed, 12 Sep 2018 12:02:38 +0300
Ilias Apalodimas <ilias.apalodimas@...aro.org> wrote:

> @@ -1003,20 +1076,29 @@ static int netsec_setup_rx_dring(struct netsec_priv *priv)
>  		u16 len;
>  
>  		buf = netsec_alloc_rx_data(priv, &dma_handle, &len);
> -		if (!buf) {
> -			netsec_uninit_pkt_dring(priv, NETSEC_RING_RX);
> +		if (!buf)
>  			goto err_out;
> -		}
>  		desc->dma_addr = dma_handle;
>  		desc->addr = buf;
>  		desc->len = len;
>  	}
>  
>  	netsec_rx_fill(priv, 0, DESC_NUM);
> +	err = xdp_rxq_info_reg(&dring->xdp_rxq, priv->ndev, 0);

Do you only have 1 RX queue? (last arg to xdp_rxq_info_reg is 0),


> +	if (err)
> +		goto err_out;
> +
> +	err = xdp_rxq_info_reg_mem_model(&dring->xdp_rxq, MEM_TYPE_PAGE_SHARED,
> +					 NULL);
> +	if (err) {
> +		xdp_rxq_info_unreg(&dring->xdp_rxq);
> +		goto err_out;
> +	}
>  
>  	return 0;
>  


-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Principal Kernel Engineer at Red Hat
  LinkedIn: http://www.linkedin.com/in/brouer