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Haishuang Yan authored
erspan driver calls ether_setup(), after commit 61e84623 ("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: 61e84623 ("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>
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