ethtool: Call ethtool's get/set_settings callbacks with cleaned data
This makes sure that when a driver calls the ethtool's
get/set_settings() callback of another driver, the data passed to it
is clean. This guarantees that speed_hi will be zeroed correctly if
the called callback doesn't explicitely set it: we are sure we don't
get a corrupted speed from the underlying driver. We also take care of
setting the cmd field appropriately (ETHTOOL_GSET/SSET).
This applies to dev_ethtool_get_settings(), which now makes sure it
sets up that ethtool command parameter correctly before passing it to
drivers. This also means that whoever calls dev_ethtool_get_settings()
does not have to clean the ethtool command parameter. This function
also becomes an exported symbol instead of an inline.
All drivers visible to make allyesconfig under x86_64 have been
updated.
Signed-off-by: David Decotigny <decot@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sfc/mdio_10g.c b/drivers/net/sfc/mdio_10g.c
index 19e68c2..7115914 100644
--- a/drivers/net/sfc/mdio_10g.c
+++ b/drivers/net/sfc/mdio_10g.c
@@ -232,12 +232,12 @@
*/
int efx_mdio_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
{
- struct ethtool_cmd prev;
+ struct ethtool_cmd prev = { .cmd = ETHTOOL_GSET };
efx->phy_op->get_settings(efx, &prev);
if (ecmd->advertising == prev.advertising &&
- ecmd->speed == prev.speed &&
+ ethtool_cmd_speed(ecmd) == ethtool_cmd_speed(&prev) &&
ecmd->duplex == prev.duplex &&
ecmd->port == prev.port &&
ecmd->autoneg == prev.autoneg)
