Re: [Xen-devel] [PATCH] Mini-OS: netfront: fix off-by-one error introduced in 7c8f3483

[Sarah Newman <srn@xxxxxxxxx>]

On 03/25/2016 11:33 AM, Samuel Thibault wrote:
> Wei Liu, on Fri 25 Mar 2016 13:09:07 +0000, wrote:
>> CC Samuel
> 
> Thanks.
> 
>> On Wed, Mar 23, 2016 at 02:26:51PM -0700, Sarah Newman wrote:
>>> 7c8f3483 introduced a break within a loop in netfront.c such that
>>> cons and nr_consumed were no longer always being incremented. The
>>> offset at cons will be processed multiple times with the break in
>>> place.
>>>
>>> Remove the break and re-add "some !=0" in the loop for HAVE_LIBC.
> 
> Mmm, right.
> 
> That ifdef makes things even more difficult to understand then. That
> however makes me think: how about the attached patch, which actually
> simplifies the rest.
> 
> Thanks!
> Samuel
> 

I have no objections to backing out additional changes made in 7c8f3483, but I 
wasn't the person who submitted that patch.

The patch tests OK with GNT_DEBUG enabled.

--Sarah

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