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From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: Wenzhuo Lu <wenzhuo.lu@intel.com>
Cc: dev@dpdk.org, konstantin.ananyev@intel.com
Subject: Re: [PATCH] igb: fix i350 VF RX issue
Date: Fri, 01 Apr 2016 15:43:13 +0200	[thread overview]
Message-ID: <2116713.aoN7M9nRpa@xps13> (raw)
In-Reply-To: <1459476534-7624-1-git-send-email-wenzhuo.lu@intel.com>

2016-04-01 10:08, Wenzhuo Lu:
> A problem is found on i350 VF. We found TX will happen once
> per 4 packets. If only 1~3 packets are received, they will
> not be forwarded. But the real problem is on RX side. The
> reason is the default RX write-back threshold is changed to
> 4, so every first 3 packets may be hung there.
> 
> This patch checks the RX wthresh when setting up the RX
> queue, and forces it to be 1, so every packet can be handled
> immediately.
> 
> Fixes: 4a41c17dba18 (igb: set default thresholds based on MAC type)
> ---
>  drivers/net/e1000/igb_rxtx.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Missing Signed-off-by

  parent reply	other threads:[~2016-04-01 13:45 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-01  2:08 [PATCH] igb: fix i350 VF RX issue Wenzhuo Lu
2016-04-01 12:28 ` Ananyev, Konstantin
2016-04-01 13:43 ` Thomas Monjalon [this message]
2016-04-05  0:49   ` Lu, Wenzhuo
2016-04-05  1:10 ` [PATCH v2] " Wenzhuo Lu
2016-04-06 10:33   ` Thomas Monjalon

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