ethtool: Expand ethtool_cmd.speed to 32 bits

Introduce the speed_hi field to ethtool_cmd, using the reserved space,
to expand the speed field to 2^32 Megabits/second.

Making this field expansion now gives us plenty of time to fix up the
user-space pieces that use SIOCETHTOOL before hardware faster than 64
Gb/s is available.

Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 16 insertions, 1 deletions

diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 8bb5e87df365..b4b038b89ee6 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -27,9 +27,24 @@ struct ethtool_cmd {
         __u8    autoneg;        /* Enable or disable autonegotiation */
         __u32   maxtxpkt;       /* Tx pkts before generating tx int */
         __u32   maxrxpkt;       /* Rx pkts before generating rx int */
-        __u32   reserved[4];
+        __u16   speed_hi;
+        __u16   reserved2;
+        __u32   reserved[3];
 };
 
+static inline void ethtool_cmd_speed_set(struct ethtool_cmd *ep,
+                                                __u32 speed)
+{
+
+        ep->speed = (__u16)speed;
+        ep->speed_hi = (__u16)(speed >> 16);
+}
+
+static inline __u32 ethtool_cmd_speed(struct ethtool_cmd *ep)
+{
+        return (ep->speed_hi << 16) | ep->speed;
+}
+
 #define ETHTOOL_BUSINFO_LEN     32
 /* these strings are set to whatever the driver author decides... */
 struct ethtool_drvinfo {