4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: "Maciej Żenczykowski" <maze@xxxxxxxxxx> [ Upstream commit 474ff2600889e16280dbc6ada8bfecb216169a70 ] So it should not fail with EPERM even though it is no longer implemented... This is a fix for: (userns)$ egrep ^Cap /proc/self/status CapInh: 0000003fffffffff CapPrm: 0000003fffffffff CapEff: 0000003fffffffff CapBnd: 0000003fffffffff CapAmb: 0000003fffffffff (userns)$ tcpdump -i usb_rndis0 tcpdump: WARNING: usb_rndis0: SIOCETHTOOL(ETHTOOL_GUFO) ioctl failed: Operation not permitted Warning: Kernel filter failed: Bad file descriptor tcpdump: can't remove kernel filter: Bad file descriptor With this change it returns EOPNOTSUPP instead of EPERM. See also https://github.com/the-tcpdump-group/libpcap/issues/689 Fixes: 08a00fea6de2 "net: Remove references to NETIF_F_UFO from ethtool." Cc: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Maciej Żenczykowski <maze@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/core/ethtool.c | 1 + 1 file changed, 1 insertion(+) --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -2572,6 +2572,7 @@ int dev_ethtool(struct net *net, struct case ETHTOOL_GPHYSTATS: case ETHTOOL_GTSO: case ETHTOOL_GPERMADDR: + case ETHTOOL_GUFO: case ETHTOOL_GGSO: case ETHTOOL_GGRO: case ETHTOOL_GFLAGS:
