enic: feature add: add ethtool -c/C support
Only rx_usec and tx_usec options for ethtool -C are settable as those
are the only settings that make sense to HW. Adds driver reporting of
intr coalescing timer value in usec units rather than HW units.
Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com>
Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/enic/vnic_enet.h b/drivers/net/enic/vnic_enet.h
index 6332ac9..8eeb675 100644
--- a/drivers/net/enic/vnic_enet.h
+++ b/drivers/net/enic/vnic_enet.h
@@ -20,6 +20,10 @@
#ifndef _VNIC_ENIC_H_
#define _VNIC_ENIC_H_
+/* Hardware intr coalesce timer is in units of 1.5us */
+#define INTR_COALESCE_USEC_TO_HW(usec) ((usec) * 2/3)
+#define INTR_COALESCE_HW_TO_USEC(usec) ((usec) * 3/2)
+
/* Device-specific region: enet configuration */
struct vnic_enet_config {
u32 flags;
@@ -30,6 +34,7 @@
u8 intr_timer_type;
u8 intr_mode;
char devname[16];
+ u32 intr_timer_usec;
};
#define VENETF_TSO 0x1 /* TSO enabled */