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authorHaishuang Yan <yanhaishuang@cmss.chinamobile.com>2019-10-08 12:56:03 +0300
committerJakub Kicinski <jakub.kicinski@netronome.com>2019-10-09 05:46:42 +0300
commit4123f637a5129470ff9d3cb00a5a4e213f2e15cc (patch)
treed73055bf42e3d95740b3af5e8abcee63ae0b7941 /net/ipv6/ip6_gre.c
parenta17fd2cf2d3a78193222738171df561c334f1ae0 (diff)
downloadlinux-4123f637a5129470ff9d3cb00a5a4e213f2e15cc.tar.xz
ip6erspan: remove the incorrect mtu limit for ip6erspan
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. Fixes: 61e84623ace3 ("net: centralize net_device min/max MTU checking") Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com> Acked-by: William Tu <u9012063@gmail.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Diffstat (limited to 'net/ipv6/ip6_gre.c')
-rw-r--r--net/ipv6/ip6_gre.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index d5779d6a6065..787d9f2a6e99 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;