Add several new ethtool commands:

coalescing, ring params, pause params, hw csum disable/enable,
scatter-gather enable/disable

include/linux/ethtool.h

@@ -72,6 +72,144 @@ struct ethtool_eeprom {
 	u32	len; /* in bytes */
 	u8	data[0];
 };
+
+/* for configuring coalescing parameters of chip */
+struct ethtool_coalesce {
+	u32	cmd;	/* ETHTOOL_{G,S}COALESCE */
+
+	/* How many usecs to delay an RX interrupt after
+	 * a packet arrives.  If 0, only rx_max_coalesced_frames
+	 * is used.
+	 */
+	u32	rx_coalesce_usecs;
+
+	/* How many packets to delay an RX interrupt after
+	 * a packet arrives.  If 0, only rx_coalesce_usecs is
+	 * used.  It is illegal to set both usecs and max frames
+	 * to zero as this would cause RX interrupts to never be
+	 * generated.
+	 */
+	u32	rx_max_coalesced_frames;
+
+	/* Same as above two parameters, except that these values
+	 * apply while an IRQ is being services by the host.  Not
+	 * all cards support this feature and the values are ignored
+	 * in that case.
+	 */
+	u32	rx_coalesce_usecs_irq;
+	u32	rx_max_coalesced_frames_irq;
+
+	/* How many usecs to delay a TX interrupt after
+	 * a packet is sent.  If 0, only tx_max_coalesced_frames
+	 * is used.
+	 */
+	u32	tx_coalesce_usecs;
+
+	/* How many packets to delay a TX interrupt after
+	 * a packet is sent.  If 0, only tx_coalesce_usecs is
+	 * used.  It is illegal to set both usecs and max frames
+	 * to zero as this would cause TX interrupts to never be
+	 * generated.
+	 */
+	u32	tx_max_coalesced_frames;
+
+	/* Same as above two parameters, except that these values
+	 * apply while an IRQ is being services by the host.  Not
+	 * all cards support this feature and the values are ignored
+	 * in that case.
+	 */
+	u32	tx_coalesce_usecs_irq;
+	u32	tx_max_coalesced_frames_irq;
+
+	/* How many usecs to delay in-memory statistics
+	 * block updates.  Some drivers do not have an in-memory
+	 * statistic block, and in such cases this value is ignored.
+	 * This value must not be zero.
+	 */
+	u32	stats_block_coalesce_usecs;
+
+	/* Adaptive RX/TX coalescing is an algorithm implemented by
+	 * some drivers to improve latency under low packet rates and
+	 * improve throughput under high packet rates.  Some drivers
+	 * only implement one of RX or TX adaptive coalescing.  Anything
+	 * not implemented by the driver causes these values to be
+	 * silently ignored.
+	 */
+	u32	use_adaptive_rx_coalesce;
+	u32	use_adaptive_tx_coalesce;
+
+	/* When the packet rate (measured in packets per second)
+	 * is below pkt_rate_low, the {rx,tx}_*_low parameters are
+	 * used.
+	 */
+	u32	pkt_rate_low;
+	u32	rx_coalesce_usecs_low;
+	u32	rx_max_coalesced_frames_low;
+	u32	tx_coalesce_usecs_low;
+	u32	tx_max_coalesced_frames_low;
+
+	/* When the packet rate is below pkt_rate_high but above
+	 * pkt_rate_low (both measured in packets per second) the
+	 * normal {rx,tx}_* coalescing parameters are used.
+	 */
+
+	/* When the packet rate is (measured in packets per second)
+	 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
+	 * used.
+	 */
+	u32	pkt_rate_high;
+	u32	rx_coalesce_usecs_high;
+	u32	rx_max_coalesced_frames_high;
+	u32	tx_coalesce_usecs_high;
+	u32	tx_max_coalesced_frames_high;
+
+	/* How often to do adaptive coalescing packet rate sampling,
+	 * measured in seconds.  Must not be zero.
+	 */
+	u32	rate_sample_interval;
+};
+
+/* for configuring RX/TX ring parameters */
+struct ethtool_ringparam {
+	u32	cmd;	/* ETHTOOL_{G,S}RINGPARAM */
+
+	/* Read only attributes.  These indicate the maximum number
+	 * of pending RX/TX ring entries the driver will allow the
+	 * user to set.
+	 */
+	u32	rx_max_pending;
+	u32	rx_mini_max_pending;
+	u32	rx_jumbo_max_pending;
+	u32	tx_max_pending;
+
+	/* Values changeable by the user.  The valid values are
+	 * in the range 1 to the "*_max_pending" counterpart above.
+	 */
+	u32	rx_pending;
+	u32	rx_mini_pending;
+	u32	rx_jumbo_pending;
+	u32	tx_pending;
+};
+
+/* for configuring link flow control parameters */
+struct ethtool_pauseparam {
+	u32	cmd;	/* ETHTOOL_{G,S}PAUSEPARAM */
+
+	/* If the link is being auto-negotiated (via ethtool_cmd.autoneg
+	 * being true) the user may set 'autonet' here non-zero to have the
+	 * pause parameters be auto-negotiated too.  In such a case, the
+	 * {rx,tx}_pause values below determine what capabilities are
+	 * advertised.
+	 *
+	 * If 'autoneg' is zero or the link is not being auto-negotiated,
+	 * then {rx,tx}_pause force the driver to use/not-use pause
+	 * flow control.
+	 */
+	u32	autoneg;
+	u32	rx_pause;
+	u32	tx_pause;
+};
+
 /* CMDs currently supported */
 #define ETHTOOL_GSET		0x00000001 /* Get settings. */
 #define ETHTOOL_SSET		0x00000002 /* Set settings, privileged. */
@@ -82,9 +220,23 @@ struct ethtool_eeprom {
 #define ETHTOOL_GMSGLVL		0x00000007 /* Get driver message level */
 #define ETHTOOL_SMSGLVL		0x00000008 /* Set driver msg level, priv. */
 #define ETHTOOL_NWAY_RST	0x00000009 /* Restart autonegotiation, priv. */
-#define ETHTOOL_GLINK		0x0000000a /* Get link status */
+#define ETHTOOL_GLINK		0x0000000a /* Get link status (ethtool_value) */
 #define ETHTOOL_GEEPROM		0x0000000b /* Get EEPROM data */
 #define ETHTOOL_SEEPROM		0x0000000c /* Set EEPROM data */
+#define ETHTOOL_GCOALESCE	0x0000000e /* Get coalesce config */
+#define ETHTOOL_SCOALESCE	0x0000000f /* Set coalesce config */
+#define ETHTOOL_GRINGPARAM	0x00000010 /* Get ring parameters */
+#define ETHTOOL_SRINGPARAM	0x00000011 /* Set ring parameters */
+#define ETHTOOL_GPAUSEPARAM	0x00000012 /* Get pause parameters */
+#define ETHTOOL_SPAUSEPARAM	0x00000013 /* Set pause parameters */
+#define ETHTOOL_GRXCSUM		0x00000014 /* Get RX hw csum enable (ethtool_value) */
+#define ETHTOOL_SRXCSUM		0x00000015 /* Set RX hw csum enable (ethtool_value) */
+#define ETHTOOL_GTXCSUM		0x00000016 /* Get TX hw csum enable (ethtool_value) */
+#define ETHTOOL_STXCSUM		0x00000017 /* Set TX hw csum enable (ethtool_value) */
+#define ETHTOOL_GSG		0x00000018 /* Get scatter-gather enable
+					    * (ethtool_value) */
+#define ETHTOOL_SSG		0x00000019 /* Set scatter-gather enable
+					    * (ethtool_value) */
 
 /* compatibility with older code */
 #define SPARC_ETH_GSET		ETHTOOL_GSET