Re: [PATCH] ip6erspan: remove the incorrect mtu limit for ip6erspan
From: William Tu <hidden>
Date: 2019-10-08 16:14:10
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On Tue, Oct 08, 2019 at 05:56:03PM +0800, Haishuang Yan wrote:
ip6erspan 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 ip6erspan tap
device.
Signed-off-by: Haishuang Yan <redacted>Thanks for the patch. Acked-by: William Tu <redacted>
quoted hunk ↗ jump to hunk
--- net/ipv6/ip6_gre.c | 1 + 1 file changed, 1 insertion(+)diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index d5779d6..787d9f2 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c@@ -2192,6 +2192,7 @@ static void ip6erspan_tap_setup(struct net_device *dev) { ether_setup(dev); + dev->max_mtu = 0; dev->netdev_ops = &ip6erspan_netdev_ops; dev->needs_free_netdev = true; dev->priv_destructor = ip6gre_dev_free;-- 1.8.3.1