netdev - [PATCH net] ip6_gre: remove the incorrect mtu limit for ipgre tap

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Message-Id: <d12e1156851e58e795044739556d858fe4265f18.1513578309.git.lucien.xin@gmail.com>
Date:   Mon, 18 Dec 2017 14:25:09 +0800
From:   Xin Long <lucien.xin@...il.com>
To:     network dev <netdev@...r.kernel.org>
Cc:     davem@...emloft.net, Jarod Wilson <jarod@...hat.com>
Subject: [PATCH net] ip6_gre: remove the incorrect mtu limit for ipgre tap

The same fix as the patch "ip_gre: remove the incorrect mtu limit for
ipgre tap" is also needed for ip6_gre.

Fixes: 61e84623ace3 ("net: centralize net_device min/max MTU checking")
Signed-off-by: Xin Long <lucien.xin@...il.com>
---
 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 4cfd8e0..416c891 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -1308,6 +1308,7 @@ static void ip6gre_tap_setup(struct net_device *dev)
 
 	ether_setup(dev);
 
+	dev->max_mtu = 0;
 	dev->netdev_ops = &ip6gre_tap_netdev_ops;
 	dev->needs_free_netdev = true;
 	dev->priv_destructor = ip6gre_dev_free;
-- 
2.1.0