netdev - Re: mlx5e uplink hairpin forwarding

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Date:   Tue, 23 Jun 2020 07:21:22 +0300
From:   Eli Cohen <eli@...lanox.com>
To:     Tonghao Zhang <xiangxia.m.yue@...il.com>
Cc:     ozsh@...lanox.com, Saeed Mahameed <saeedm@...lanox.com>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: mlx5e uplink hairpin forwarding

On Tue, Jun 23, 2020 at 09:24:25AM +0800, Tonghao Zhang wrote:
> Hi Eli
> Still not work
> 
> $ tc filter add dev enp130s0f0 protocol ip prio 1 root flower skip_sw
> dst_ip 11.12.13.14 action mirred egress redirect dev enp130s0f0
> Error: mlx5_core: devices are both uplink, can't offload forwarding.
> 
> $ tc filter add dev enp130s0f0 protocol ip prio 1 parent ffff: flower
> skip_sw dst_ip 11.12.13.14 action mirred egress redirect dev
> enp130s0f0
> Error: mlx5_core: devices are both uplink, can't offload forwarding.
> 
> The firmware used doesn't support that feature?
> https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=613f53fe09a27f928a7d05132e1a74b5136e8f04
> 

You need a newer firmware. I suggest you upgrade to the latest firmware.