ethtool, mdio, mii: Specify MDIO information fields in struct ethtool_cmd

Add comments for ethtool_cmd::phy_address and
ethtool_cmd::mdio_support, and definitions of the flags currently
used in mdio_support.

In the mdio library, assert that its own flags continue to match those
in the ethtool interface.

In the mii library, use the ethtool flag definition and stop
including <linux/mdio.h>.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/mdio.c b/drivers/net/mdio.c
index 16fbb11d92ac..8403316eb02b 100644
--- a/drivers/net/mdio.c
+++ b/drivers/net/mdio.c
@@ -190,6 +190,9 @@ void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
         int reg;
         u32 speed;
 
+        BUILD_BUG_ON(MDIO_SUPPORTS_C22 != ETH_MDIO_SUPPORTS_C22);
+        BUILD_BUG_ON(MDIO_SUPPORTS_C45 != ETH_MDIO_SUPPORTS_C45);
+
         ecmd->transceiver = XCVR_INTERNAL;
         ecmd->phy_address = mdio->prtad;
         ecmd->mdio_support =