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| author | Haishuang Yan <yanhaishuang@cmss.chinamobile.com> | 2019-10-09 14:22:12 -0700 |
|---|---|---|
| committer | Simon Horman <simon.horman@netronome.com> | 2019-10-18 16:22:12 +0200 |
| commit | 5bc09abc714c82b5d2c7757f517f5ba987f2aed5 (patch) | |
| tree | 49cf4c5245b17a5a3bea1e3dc4a09f4cd4bdbe13 /datapath | |
| parent | 8fc8986d0ad9d2f6819a837adfe436fb75883e72 (diff) | |
| download | openvswitch-5bc09abc714c82b5d2c7757f517f5ba987f2aed5.tar.gz | |
compat: remove the incorrect mtu limit for erspan
Upstream commit:
commit 0e141f757b2c78c983df893e9993313e2dc21e38
Author: Haishuang Yan <yanhaishuang@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 <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: Greg Rose <gvrose8192@gmail.com>
Acked-by: Yi-Hung Wei <yihung.wei@gmail.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Diffstat (limited to 'datapath')
| -rw-r--r-- | datapath/linux/compat/ip_gre.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/datapath/linux/compat/ip_gre.c b/datapath/linux/compat/ip_gre.c index 2015d597c..2852dad76 100644 --- a/datapath/linux/compat/ip_gre.c +++ b/datapath/linux/compat/ip_gre.c @@ -1099,6 +1099,9 @@ static void erspan_setup(struct net_device *dev) eth_hw_addr_random(dev); ether_setup(dev); +#ifdef HAVE_NET_DEVICE_MAX_MTU + dev->max_mtu = 0; +#endif dev->netdev_ops = &erspan_netdev_ops; dev->priv_flags &= ~IFF_TX_SKB_SHARING; dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |