Index: head/sys/dev/sfxge/common/efx_regs_ef10.h
===================================================================
--- head/sys/dev/sfxge/common/efx_regs_ef10.h
+++ head/sys/dev/sfxge/common/efx_regs_ef10.h
@@ -726,6 +726,21 @@
 #define	ES_DZ_PS_RX_PREFIX_ORIG_LEN_LBN 48
 #define	ES_DZ_PS_RX_PREFIX_ORIG_LEN_WIDTH 16
 
+/* Equal stride super-buffer RX packet prefix (see SF-119419-TC) */
+#define	ES_EZ_ESSB_RX_PREFIX_LEN 8
+#define	ES_EZ_ESSB_RX_PREFIX_DATA_LEN_LBN 0
+#define	ES_EZ_ESSB_RX_PREFIX_DATA_LEN_WIDTH 16
+#define	ES_EZ_ESSB_RX_PREFIX_MARK_LBN 16
+#define	ES_EZ_ESSB_RX_PREFIX_MARK_WIDTH 8
+#define	ES_EZ_ESSB_RX_PREFIX_HASH_VALID_LBN 28
+#define	ES_EZ_ESSB_RX_PREFIX_HASH_VALID_WIDTH 1
+#define	ES_EZ_ESSB_RX_PREFIX_MARK_VALID_LBN 29
+#define	ES_EZ_ESSB_RX_PREFIX_MARK_VALID_WIDTH 1
+#define	ES_EZ_ESSB_RX_PREFIX_MATCH_FLAG_LBN 30
+#define	ES_EZ_ESSB_RX_PREFIX_MATCH_FLAG_WIDTH 1
+#define	ES_EZ_ESSB_RX_PREFIX_HASH_LBN 32
+#define	ES_EZ_ESSB_RX_PREFIX_HASH_WIDTH 32
+
 /*
  * An extra flag for the packed stream mode,
  * signalling the start of a new buffer