netdev - Re: [patch net 0/2] mlxsw: spectrum: Configure TTL of "inherit" for offloaded tunnels

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Date:   Sun, 22 Oct 2017 02:19:50 +0100 (WEST)
From:   David Miller <davem@...emloft.net>
To:     jiri@...nulli.us
Cc:     netdev@...r.kernel.org, petrm@...lanox.com, idosch@...lanox.com,
        mlxsw@...lanox.com
Subject: Re: [patch net 0/2] mlxsw: spectrum: Configure TTL of "inherit"
 for offloaded tunnels

From: Jiri Pirko <jiri@...nulli.us>
Date: Fri, 20 Oct 2017 09:16:14 +0200

> From: Jiri Pirko <jiri@...lanox.com>
> 
> Petr says:
> 
> Currently mlxsw only offloads tunnels that are configured with TTL of "inherit"
> (which is the default). However, Spectrum defaults to 255 and the driver
> neglects to change the configuration. Thus the tunnel packets from offloaded
> tunnels always have TTL of 255, even though tunnels with explicit TTL of 255 are
> never actually offloaded.
> 
> To fix this, introduce support for TIGCR, the register that keeps the related
> bits of global tunnel configuration, and use it on first offload to properly
> configure inheritance of TTL of tunnel packets from overlay packets.

Series applied.