Added kernel support in EEE Ethtool commands

This patch extends the kernel's ethtool interface by adding support
for 2 new EEE commands - get_eee and set_eee.

Thanks goes to Giuseppe Cavallaro for his original patch adding this support.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 35 insertions, 0 deletions

diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index e17fa714058..297370a6cb1 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -137,6 +137,35 @@ struct ethtool_eeprom {
 };
 
 /**
+ * struct ethtool_eee - Energy Efficient Ethernet information
+ * @cmd: ETHTOOL_{G,S}EEE
+ * @supported: Mask of %SUPPORTED_* flags for the speed/duplex combinations
+ *      for which there is EEE support.
+ * @advertised: Mask of %ADVERTISED_* flags for the speed/duplex combinations
+ *      advertised as eee capable.
+ * @lp_advertised: Mask of %ADVERTISED_* flags for the speed/duplex
+ *      combinations advertised by the link partner as eee capable.
+ * @eee_active: Result of the eee auto negotiation.
+ * @eee_enabled: EEE configured mode (enabled/disabled).
+ * @tx_lpi_enabled: Whether the interface should assert its tx lpi, given
+ *      that eee was negotiated.
+ * @tx_lpi_timer: Time in microseconds the interface delays prior to asserting
+ *      its tx lpi (after reaching 'idle' state). Effective only when eee
+ *      was negotiated and tx_lpi_enabled was set.
+ */
+struct ethtool_eee {
+        __u32   cmd;
+        __u32   supported;
+        __u32   advertised;
+        __u32   lp_advertised;
+        __u32   eee_active;
+        __u32   eee_enabled;
+        __u32   tx_lpi_enabled;
+        __u32   tx_lpi_timer;
+        __u32   reserved[2];
+};
+
+/**
  * struct ethtool_modinfo - plugin module eeprom information
  * @cmd: %ETHTOOL_GMODULEINFO
  * @type: Standard the module information conforms to %ETH_MODULE_SFF_xxxx
@@ -945,6 +974,8 @@ static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
  * @get_module_info: Get the size and type of the eeprom contained within
  *      a plug-in module.
  * @get_module_eeprom: Get the eeprom information from the plug-in module
+ * @get_eee: Get Energy-Efficient (EEE) supported and status.
+ * @set_eee: Set EEE status (enable/disable) as well as LPI timers.
  *
  * All operations are optional (i.e. the function pointer may be set
  * to %NULL) and callers must take this into account.  Callers must
@@ -1011,6 +1042,8 @@ struct ethtool_ops {
                                    struct ethtool_modinfo *);
         int     (*get_module_eeprom)(struct net_device *,
                                      struct ethtool_eeprom *, u8 *);
+        int     (*get_eee)(struct net_device *, struct ethtool_eee *);
+        int     (*set_eee)(struct net_device *, struct ethtool_eee *);
 
 
 };
@@ -1089,6 +1122,8 @@ struct ethtool_ops {
 #define ETHTOOL_GET_TS_INFO     0x00000041 /* Get time stamping and PHC info */
 #define ETHTOOL_GMODULEINFO     0x00000042 /* Get plug-in module information */
 #define ETHTOOL_GMODULEEEPROM   0x00000043 /* Get plug-in module eeprom */
+#define ETHTOOL_GEEE            0x00000044 /* Get EEE settings */
+#define ETHTOOL_SEEE            0x00000045 /* Set EEE settings */
 
 /* compatibility with older code */
 #define SPARC_ETH_GSET          ETHTOOL_GSET