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| author | Maciej Żenczykowski <maze@google.com> | 2018-09-22 01:34:01 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-09-22 17:11:26 -0700 |
| commit | 474ff2600889e16280dbc6ada8bfecb216169a70 (patch) | |
| tree | 9c85a5ceb0482e6f98751ecb4b9ae7f29427bde0 /net/core | |
| parent | 8360ed6745df6de2d8ddff8e2116789258fe5890 (diff) | |
| download | linux-474ff2600889e16280dbc6ada8bfecb216169a70.tar.bz2 | |
net-ethtool: ETHTOOL_GUFO did not and should not require CAP_NET_ADMIN
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@davemloft.net>
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/ethtool.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c index c9993c6c2fd4..234a0ec2e932 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -2624,6 +2624,7 @@ int dev_ethtool(struct net *net, struct ifreq *ifr) case ETHTOOL_GPHYSTATS: case ETHTOOL_GTSO: case ETHTOOL_GPERMADDR: + case ETHTOOL_GUFO: case ETHTOOL_GGSO: case ETHTOOL_GGRO: case ETHTOOL_GFLAGS: |