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authorDavid Decotigny <decot@google.com>2011-04-27 22:32:37 +0400
committerDavid S. Miller <davem@davemloft.net>2011-04-30 01:01:29 +0400
commit36504605432996590f889e33d47e2d9c581f7569 (patch)
tree3bf2de6d3e789fe8eb1b9ced0d796861b0310175 /include/linux/ethtool.h
parent7e610caaa5b32d3be9216f040f178e4a23b678b2 (diff)
downloadlinux-36504605432996590f889e33d47e2d9c581f7569.tar.xz
ethtool: cosmetics: enforce const-ness in ethtool_cmd_speed
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> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/ethtool.h')
-rw-r--r--include/linux/ethtool.h14
1 files changed, 10 insertions, 4 deletions
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 9de31274341d..7e6e0a89ca26 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;
}