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ethtool: ntuple: fix rss + ring_cookie check

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commit 2b91cc1214 upstream.

The info.flow_type is for RXFH commands, ntuple flow_type is inside
the flow spec. The check currently does nothing, as info.flow_type
is 0 (or even uninitialized by user space) for ETHTOOL_SRXCLSRLINS.

Fixes: 9e43ad7a1e ("net: ethtool: only allow set_rxnfc with rss + ring_cookie if driver opts in")
Reviewed-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Link: https://patch.msgid.link/20250201013040.725123-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jakub Kicinski 2025-01-31 17:30:38 -08:00 committed by Greg Kroah-Hartman
parent 5ae72abbf9
commit 333f128224
1 changed files with 1 additions and 1 deletions
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2
net/ethtool/ioctl.c
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@ -993,7 +993,7 @@ static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
return rc;
/* Nonzero ring with RSS only makes sense if NIC adds them together */
if (cmd == ETHTOOL_SRXCLSRLINS && info.flow_type & FLOW_RSS &&
if (cmd == ETHTOOL_SRXCLSRLINS && info.fs.flow_type & FLOW_RSS &&
!ops->cap_rss_rxnfc_adds &&
ethtool_get_flow_spec_ring(info.fs.ring_cookie))
return -EINVAL;