[PATCHv2 1/4] ethtool: cosmetics: enforce const-ness in ethtool_cmd_speed

David Decotigny
2011-04-27T18:35:13Z

The 'ep' argument of ethtool_cmd_speed is not altered: advertise it in
protoype. +Indentation fix. Also add comments to advise using the
ethtool_cmd_speed API to get/set the link speed.

Signed-off-by: David Decotigny <decot@google.com>
---
include/linux/ethtool.h | 14 ++++++++++----
1 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 9de3127..7e6e0a8 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -24,7 +24,10 @@ struct ethtool_cmd {
__u32 cmd;
__u32 supported; /* Features this interface supports */
__u32 advertising; /* Features this interface advertises */
- __u16 speed; /* The forced speed, 10Mb, 100Mb, gigabit */
+ __u16 speed; /* The forced speed (lower bits) in
+ * Mbps. Please use
+ * ethtool_cmd_speed()/_set() to
+ * access it */
__u8 duplex; /* Duplex, half or full */
__u8 port; /* Which connector port */
__u8 phy_address;
@@ -33,7 +36,10 @@ struct ethtool_cmd {
__u8 mdio_support;
__u32 maxtxpkt; /* Tx pkts before generating tx int */
__u32 maxrxpkt; /* Rx pkts before generating rx int */
- __u16 speed_hi;
+ __u16 speed_hi; /* The forced speed (upper
+ * bits) in Mbps. Please use
+ * ethtool_cmd_speed()/_set() to
+ * access it */
__u8 eth_tp_mdix;
__u8 reserved2;
__u32 lp_advertising; /* Features the link partner advertises */
@@ -41,14 +47,14 @@ struct ethtool_cmd {
};

static inline void ethtool_cmd_speed_set(struct ethtool_cmd *ep,
- __u32 speed)
+ __u32 speed)
{

ep->speed = (__u16)speed;
ep->speed_hi = (__u16)(speed >> 16);
}

-static inline __u32 ethtool_cmd_speed(struct ethtool_cmd *ep)
+static inline __u32 ethtool_cmd_speed(const struct ethtool_cmd *ep)
{
return (ep->speed_hi << 16) | ep->speed;
}
--
1.7.3.1