[OpenWrt-Devel] [RFC] ag71xx: Enable flow control for builtin switch port

Conn O'Griofa connogriofa at gmail.com
Tue Apr 19 13:24:30 EDT 2016

On Tue, Apr 19, 2016 at 4:09 PM, Sven Eckelmann <
sven.eckelmann at open-mesh.com> wrote:

> On Tuesday 19 April 2016 16:04:48 Conn O'Griofa wrote:
> [...]
> > It looks like you may have solved the original issue; this patch is
> working
> > fine on WR-842ND v1. More details:
> >
> > * When I tried reverting r27034, the WAN port stopped functioning
> > correctly, showing a tx timeout  error - but the LAN ports still worked.
> > With your patch, all ports work correctly.
> > * Your testcase (ping -s 65507 from/to a wired client between LAN ports)
> > usually results in 20%-40% packet loss. With your patch (as with the
> > original), it's now typically 0% packet loss between LAN ports.
> There might be more bugs hidden in the hardware. Maybe some SoCs have
> problems
> with it or some setups with external switch.
> But thanks a lot for your feedback.
> Kind regards,
>         Sven

Of course - but I would urge other SoCs to be tested (or at least, find a
way to enable it only on compatible chipsets). I'm currently using this
router as a dumb AP to serve 2.4GHz clients, and your patch greatly
improves connection quality due to the packet loss issue being cleared up.
I'll continue using your patch & will report if any issue arises related to

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