From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ye Xiaolong <xiaolong.ye@intel.com>
Subject: Re: [PATCH v3 1/5] net/af_xdp: introduce AF XDP PMD
	driver
Date: Sat, 23 Mar 2019 07:19:53 +0800
Message-ID: <20190322231953.GB15995@intel.com>
References: <20190301080947.91086-1-xiaolong.ye@intel.com>
 <20190321091845.78495-1-xiaolong.ye@intel.com>
 <20190321091845.78495-2-xiaolong.ye@intel.com>
 <20190321083000.5894dbf7@shemminger-XPS-13-9360>
 <20190322020157.GD84243@intel.com>
 <20190322083746.12467e17@shemminger-XPS-13-9360>
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Cc: dev@dpdk.org, Qi Zhang <qi.z.zhang@intel.com>,
 Karlsson Magnus <magnus.karlsson@intel.com>,
 Topel Bjorn <bjorn.topel@intel.com>
To: Stephen Hemminger <stephen@networkplumber.org>
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On 03/22, Stephen Hemminger wrote:
>On Fri, 22 Mar 2019 10:01:57 +0800
>Ye Xiaolong <xiaolong.ye@intel.com> wrote:
>
>> On 03/21, Stephen Hemminger wrote:
>> >On Thu, 21 Mar 2019 17:18:41 +0800
>> >Xiaolong Ye <xiaolong.ye@intel.com> wrote:
>> >  
>> >> +
>> >> +	if (ret < 0)
>> >> +		return -EINVAL;
>> >> +
>> >> +	return 0;  
>> >
>> >You could propogate kernel errno into DPDK?
>> >	return (ret < 0) ? -errno : 0;
>> >  
>> 
>> Sorry, could you share the advantage of doing this?
>> 
>> Thanks,
>> Xiaolong
>
>Suppose kernel returned -ENOTSUPP or other error, it could go back to
>the caller rather than juse invalid.

Got it.