linux-kernel - Re: [Intel-wired-lan] [PATCH 1/1] ixgbe: fcoe: return value of skb

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Date:   Thu, 8 Dec 2016 01:32:47 +0000
From:   "Rustad, Mark D" <mark.d.rustad@...el.com>
To:     Zhouyi Zhou <zhouzhouyi@...il.com>
CC:     "Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Zhouyi Zhou <yizhouzhou@....ac.cn>
Subject: Re: [Intel-wired-lan] [PATCH 1/1] ixgbe: fcoe: return value of
        skb_linearize should be handled

Zhouyi Zhou <zhouzhouyi@...il.com> wrote:

> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c  
> b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> index fee1f29..4926d48 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> @@ -2173,8 +2173,7 @@ static int ixgbe_clean_rx_irq(struct ixgbe_q_vector  
> *q_vector,
>  				total_rx_bytes += ddp_bytes;
>  				total_rx_packets += DIV_ROUND_UP(ddp_bytes,
>  								 mss);
> -			}
> -			if (!ddp_bytes) {
> +			} else {
>  				dev_kfree_skb_any(skb);
>  				continue;
>  			}

This is changing the logic by treating a negative ddp_bytes value (an error  
return) the same as a 0 value. This is probably wrong and inappropriate for  
this patch in any case.

--
Mark Rustad, Networking Division, Intel Corporation

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