igb: add per-packet timestamping
This patch adds support for per-packet timestamping for the
82580 adapter. The rx timestamp code is also pulled out of the
inlined rx hotpath and instead moved to a seperate function.
This version adds a comment explaining the per-packet timestamping
code added to igb_hwtstamp_ioctl().
Signed-off-by: Nicholas Nunley <nicholasx.d.nunley@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/igb/igb.h b/drivers/net/igb/igb.h
index a177570..4f69b6d 100644
--- a/drivers/net/igb/igb.h
+++ b/drivers/net/igb/igb.h
@@ -107,6 +107,7 @@
#define MAXIMUM_ETHERNET_VLAN_SIZE 1522
/* Supported Rx Buffer Sizes */
+#define IGB_RXBUFFER_64 64 /* Used for packet split */
#define IGB_RXBUFFER_128 128 /* Used for packet split */
#define IGB_RXBUFFER_1024 1024
#define IGB_RXBUFFER_2048 2048
@@ -324,6 +325,7 @@
#define IGB_82576_TSYNC_SHIFT 19
#define IGB_82580_TSYNC_SHIFT 24
+#define IGB_TS_HDR_LEN 16
enum e1000_state_t {
__IGB_TESTING,
__IGB_RESETTING,