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authorStanislaw Gruszka <sgruszka@redhat.com>2011-03-22 23:54:49 +0000
committerDavid S. Miller <davem@davemloft.net>2011-03-27 23:35:24 -0700
commit673e63c688f43104c73aad8ea4237f7ad41fa14d (patch)
tree3d11c6f74a5d0823020db8642c3f2cf062347afb /include/linux/ethtool.h
parentb5845f9834d8f4c79d324bc59b99dbcf0a40f428 (diff)
net: fix ethtool->set_flags not intended -EINVAL return value
After commit d5dbda23804156ae6f35025ade5307a49d1db6d7 "ethtool: Add support for vlan accleration.", drivers that have NETIF_F_HW_VLAN_TX, and/or NETIF_F_HW_VLAN_RX feature, but do not allow enable/disable vlan acceleration via ethtool set_flags, always return -EINVAL from that function. Fix by returning -EINVAL only if requested features do not match current settings and can not be changed by driver. Change any driver that define ethtool->set_flags to use ethtool_invalid_flags() to avoid similar problems in the future (also on drivers that do not have the problem). Tested with modified (to reproduce this bug) myri10ge driver. Cc: stable@kernel.org # 2.6.37+ Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/ethtool.h')
-rw-r--r--include/linux/ethtool.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index ae757bcf1280..c8fcbdd2b0e7 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -680,6 +680,7 @@ int ethtool_op_set_ufo(struct net_device *dev, u32 data);
u32 ethtool_op_get_flags(struct net_device *dev);
int ethtool_op_set_flags(struct net_device *dev, u32 data, u32 supported);
void ethtool_ntuple_flush(struct net_device *dev);
+bool ethtool_invalid_flags(struct net_device *dev, u32 data, u32 supported);
/**
* &ethtool_ops - Alter and report network device settings