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Re: Incorrect mesh path seq num

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On Mon, Sep 4, 2017 at 6:19 AM, Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote:
> On Fri, 2017-09-01 at 13:07 -0700, Thomas Pedersen wrote:
>> On Thu, Aug 31, 2017 at 11:30 PM, Greg Maitz <ghh19622@xxxxxxxxx>
>> wrote:
>> > Hi guys,
>> >
>> > I'm seeing a problem when I work on the wireless mesh between two
>> > linux devices. The root node has 3.18 kernel while the next hop
>> > station runs 2.6.37 kernel. I found the mpath->sn value is
>> > incorrect
>> > most of the time on the device having 2.6.37 kernel. After
>> > examining
>> > the code, in function hwmp_route_info_get [mesh_hwmp.c], after
>> > mesh_path_lookup, the sequence number (i.e, mpath->sn) is
>> > incorrect.
>> > For instance, I see mpath->sn having value 0x30950000. It should be
>> > 0x9530, while the orig_sn is having value 0x9531.
>>
>> Looks like an endianess bug. Are you testing on two platforms of
>> different endianess?
>
> Even if that's the case, wouldn't it mean some kind of conversion is
> missing somewhere?

Yes. I looked for a missing conversion, but couldn't find it.

Greg, where / how are you printing mpath->sn? mpath dump or a printk you added?

-- 
thomas



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