From: John Allen Date: Tue, 6 Jun 2017 21:55:52 +0000 (-0500) Subject: ibmvnic: Return failure on attempted mtu change X-Git-Tag: v4.12-rc6~32^2~59 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3a807b751c66e76bff39da4a9bd9828d7866d025;p=karo-tx-linux.git ibmvnic: Return failure on attempted mtu change Changing the mtu is currently not supported in the ibmvnic driver. Implement .ndo_change_mtu in the driver so that attempting to use ifconfig to change the mtu will fail and present the user with an error message. Signed-off-by: John Allen Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index a93757c255f7..c0fbeb387db4 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -1468,6 +1468,11 @@ static void ibmvnic_netpoll_controller(struct net_device *dev) } #endif +static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu) +{ + return -EOPNOTSUPP; +} + static const struct net_device_ops ibmvnic_netdev_ops = { .ndo_open = ibmvnic_open, .ndo_stop = ibmvnic_close, @@ -1479,6 +1484,7 @@ static const struct net_device_ops ibmvnic_netdev_ops = { #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = ibmvnic_netpoll_controller, #endif + .ndo_change_mtu = ibmvnic_change_mtu, }; /* ethtool functions */