On Wed, Oct 9, 2019 at 2:25 PM Greg Rose <gvrose8...@gmail.com> wrote:
>
> From: Haishuang Yan <yanhaishu...@cmss.chinamobile.com>
>
> Upstream commit:
> commit 0e141f757b2c78c983df893e9993313e2dc21e38
> Author: Haishuang Yan <yanhaishu...@cmss.chinamobile.com>
> Date: Fri Sep 27 14:58:20 2019 +0800
>
> erspan: remove the incorrect mtu limit for erspan
>
> erspan driver calls ether_setup(), after commit 61e84623ace3
> ("net: centralize net_device min/max MTU checking"), the range
> of mtu is [min_mtu, max_mtu], which is [68, 1500] by default.
>
> It causes the dev mtu of the erspan device to not be greater
> than 1500, this limit value is not correct for ipgre tap device.
>
> Tested:
> Before patch:
> # ip link set erspan0 mtu 1600
> Error: mtu greater than device maximum.
> After patch:
> # ip link set erspan0 mtu 1600
> # ip -d link show erspan0
> 21: erspan0@NONE: <BROADCAST,MULTICAST> mtu 1600 qdisc noop state DOWN
> mode DEFAULT group default qlen 1000
> link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff promiscuity 0
> minmtu 68 maxmtu 0
>
> Fixes: 61e84623ace3 ("net: centralize net_device min/max MTU checking")
> Signed-off-by: Haishuang Yan <yanhaishu...@cmss.chinamobile.com>
> Signed-off-by: David S. Miller <da...@davemloft.net>
>
> Cc: Haishuang Yan <yanhaishu...@cmss.chinamobile.com>
> Signed-off-by: Greg Rose <gvrose8...@gmail.com>
> ---
LGTM.
Acked-by: Yi-Hung Wei <yihung....@gmail.com>
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