Index: sys/dev/sfxge/common/ef10_ev.c
===================================================================
--- sys/dev/sfxge/common/ef10_ev.c
+++ sys/dev/sfxge/common/ef10_ev.c
@@ -776,7 +776,7 @@
 }
 #endif /* EFSYS_OPT_QSTATS */
 
-#if EFSYS_OPT_RX_PACKED_STREAM
+#if EFSYS_OPT_RX_PACKED_STREAM || EFSYS_OPT_RX_ES_SUPER_BUFFER
 
 static	__checkReturn	boolean_t
 ef10_ev_rx_packed_stream(
@@ -815,7 +815,18 @@
 
 	if (new_buffer) {
 		flags |= EFX_PKT_PACKED_STREAM_NEW_BUFFER;
+#if EFSYS_OPT_RX_PACKED_STREAM
+		/*
+		 * If both packed stream and equal stride super-buffer
+		 * modes are compiled in, in theory credits should be
+		 * be maintained for packed stream only, but right now
+		 * these modes are not distinguished in the event queue
+		 * Rx queue state and it is OK to increment the counter
+		 * regardless (it might be event cheaper than branching
+		 * since neighbour structure member are updated as well).
+		 */
 		eersp->eers_rx_packed_stream_credits++;
+#endif
 		eersp->eers_rx_read_ptr++;
 	}
 	current_id = eersp->eers_rx_read_ptr & eersp->eers_rx_mask;
@@ -857,7 +868,7 @@
 	return (should_abort);
 }
 
-#endif /* EFSYS_OPT_RX_PACKED_STREAM */
+#endif /* EFSYS_OPT_RX_PACKED_STREAM || EFSYS_OPT_RX_ES_SUPER_BUFFER */
 
 static	__checkReturn	boolean_t
 ef10_ev_rx(
@@ -891,7 +902,7 @@
 	label = EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_QLABEL);
 	eersp = &eep->ee_rxq_state[label];
 
-#if EFSYS_OPT_RX_PACKED_STREAM
+#if EFSYS_OPT_RX_PACKED_STREAM || EFSYS_OPT_RX_ES_SUPER_BUFFER
 	/*
 	 * Packed stream events are very different,
 	 * so handle them separately
@@ -1391,8 +1402,9 @@
 	__in		efx_rxq_type_t type)
 {
 	efx_evq_rxq_state_t *eersp;
-#if EFSYS_OPT_RX_PACKED_STREAM
+#if EFSYS_OPT_RX_PACKED_STREAM || EFSYS_OPT_RX_ES_SUPER_BUFFER
 	boolean_t packed_stream = (type == EFX_RXQ_TYPE_PACKED_STREAM);
+	boolean_t es_super_buffer = (type == EFX_RXQ_TYPE_ES_SUPER_BUFFER);
 #endif
 
 	_NOTE(ARGUNUSED(type))
@@ -1414,9 +1426,11 @@
 	eersp->eers_rx_read_ptr = 0;
 #endif
 	eersp->eers_rx_mask = erp->er_mask;
-#if EFSYS_OPT_RX_PACKED_STREAM
+#if EFSYS_OPT_RX_PACKED_STREAM || EFSYS_OPT_RX_ES_SUPER_BUFFER
 	eersp->eers_rx_stream_npackets = 0;
-	eersp->eers_rx_packed_stream = packed_stream;
+	eersp->eers_rx_packed_stream = packed_stream || es_super_buffer;
+#endif
+#if EFSYS_OPT_RX_PACKED_STREAM
 	if (packed_stream) {
 		eersp->eers_rx_packed_stream_credits = (eep->ee_mask + 1) /
 		    EFX_DIV_ROUND_UP(EFX_RX_PACKED_STREAM_MEM_PER_CREDIT,
@@ -1450,9 +1464,11 @@
 
 	eersp->eers_rx_read_ptr = 0;
 	eersp->eers_rx_mask = 0;
-#if EFSYS_OPT_RX_PACKED_STREAM
+#if EFSYS_OPT_RX_PACKED_STREAM || EFSYS_OPT_RX_ES_SUPER_BUFFER
 	eersp->eers_rx_stream_npackets = 0;
 	eersp->eers_rx_packed_stream = B_FALSE;
+#endif
+#if EFSYS_OPT_RX_PACKED_STREAM
 	eersp->eers_rx_packed_stream_credits = 0;
 #endif
 }
Index: sys/dev/sfxge/common/ef10_impl.h
===================================================================
--- sys/dev/sfxge/common/ef10_impl.h
+++ sys/dev/sfxge/common/ef10_impl.h
@@ -1242,6 +1242,16 @@
 
 #endif /* EFSYS_OPT_RX_PACKED_STREAM */
 
+#if EFSYS_OPT_RX_ES_SUPER_BUFFER
+
+/*
+ * Maximum DMA length and buffer stride alignment.
+ * (see SF-119419-TC, 3.2)
+ */
+#define	EFX_RX_ES_SUPER_BUFFER_BUF_ALIGNMENT	64
+
+#endif
+
 #ifdef	__cplusplus
 }
 #endif
Index: sys/dev/sfxge/common/ef10_rx.c
===================================================================
--- sys/dev/sfxge/common/ef10_rx.c
+++ sys/dev/sfxge/common/ef10_rx.c
@@ -48,12 +48,16 @@
 	__in		efsys_mem_t *esmp,
 	__in		boolean_t disable_scatter,
 	__in		boolean_t want_inner_classes,
-	__in		uint32_t ps_bufsize)
+	__in		uint32_t ps_bufsize,
+	__in		uint32_t es_bufs_per_desc,
+	__in		uint32_t es_max_dma_len,
+	__in		uint32_t es_buf_stride,
+	__in		uint32_t hol_block_timeout)
 {
 	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
 	efx_mcdi_req_t req;
-	uint8_t payload[MAX(MC_CMD_INIT_RXQ_EXT_IN_LEN,
-			    MC_CMD_INIT_RXQ_EXT_OUT_LEN)];
+	uint8_t payload[MAX(MC_CMD_INIT_RXQ_V3_IN_LEN,
+			    MC_CMD_INIT_RXQ_V3_OUT_LEN)];
 	int npages = EFX_RXQ_NBUFS(ndescs);
 	int i;
 	efx_qword_t *dma_addr;
@@ -71,6 +75,8 @@
 
 	if (ps_bufsize > 0)
 		dma_mode = MC_CMD_INIT_RXQ_EXT_IN_PACKED_STREAM;
+	else if (es_bufs_per_desc > 0)
+		dma_mode = MC_CMD_INIT_RXQ_V3_IN_EQUAL_STRIDE_SUPER_BUFFER;
 	else
 		dma_mode = MC_CMD_INIT_RXQ_EXT_IN_SINGLE_PACKET;
 
@@ -97,9 +103,9 @@
 	(void) memset(payload, 0, sizeof (payload));
 	req.emr_cmd = MC_CMD_INIT_RXQ;
 	req.emr_in_buf = payload;
-	req.emr_in_length = MC_CMD_INIT_RXQ_EXT_IN_LEN;
+	req.emr_in_length = MC_CMD_INIT_RXQ_V3_IN_LEN;
 	req.emr_out_buf = payload;
-	req.emr_out_length = MC_CMD_INIT_RXQ_EXT_OUT_LEN;
+	req.emr_out_length = MC_CMD_INIT_RXQ_V3_OUT_LEN;
 
 	MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_SIZE, ndescs);
 	MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_TARGET_EVQ, target_evq);
@@ -119,6 +125,19 @@
 	MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_OWNER_ID, 0);
 	MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_PORT_ID, EVB_PORT_ID_ASSIGNED);
 
+	if (es_bufs_per_desc > 0) {
+		MCDI_IN_SET_DWORD(req,
+		    INIT_RXQ_V3_IN_ES_PACKET_BUFFERS_PER_BUCKET,
+		    es_bufs_per_desc);
+		MCDI_IN_SET_DWORD(req,
+		    INIT_RXQ_V3_IN_ES_MAX_DMA_LEN, es_max_dma_len);
+		MCDI_IN_SET_DWORD(req,
+		    INIT_RXQ_V3_IN_ES_PACKET_STRIDE, es_buf_stride);
+		MCDI_IN_SET_DWORD(req,
+		    INIT_RXQ_V3_IN_ES_HEAD_OF_LINE_BLOCK_TIMEOUT,
+		    hol_block_timeout);
+	}
+
 	dma_addr = MCDI_IN2(req, efx_qword_t, INIT_RXQ_IN_DMA_ADDR);
 	addr = EFSYS_MEM_ADDR(esmp);
 
@@ -1040,6 +1059,10 @@
 	boolean_t disable_scatter;
 	boolean_t want_inner_classes;
 	unsigned int ps_buf_size;
+	uint32_t es_bufs_per_desc = 0;
+	uint32_t es_max_dma_len = 0;
+	uint32_t es_buf_stride = 0;
+	uint32_t hol_block_timeout = 0;
 
 	_NOTE(ARGUNUSED(id, erp, type_data))
 
@@ -1088,6 +1111,19 @@
 		}
 		break;
 #endif /* EFSYS_OPT_RX_PACKED_STREAM */
+#if EFSYS_OPT_RX_ES_SUPER_BUFFER
+	case EFX_RXQ_TYPE_ES_SUPER_BUFFER:
+		ps_buf_size = 0;
+		es_bufs_per_desc =
+		    type_data->ertd_es_super_buffer.eessb_bufs_per_desc;
+		es_max_dma_len =
+		    type_data->ertd_es_super_buffer.eessb_max_dma_len;
+		es_buf_stride =
+		    type_data->ertd_es_super_buffer.eessb_buf_stride;
+		hol_block_timeout =
+		    type_data->ertd_es_super_buffer.eessb_hol_block_timeout;
+		break;
+#endif /* EFSYS_OPT_RX_ES_SUPER_BUFFER */
 	default:
 		rc = ENOTSUP;
 		goto fail4;
@@ -1111,6 +1147,27 @@
 	EFSYS_ASSERT(ps_buf_size == 0);
 #endif /* EFSYS_OPT_RX_PACKED_STREAM */
 
+#if EFSYS_OPT_RX_ES_SUPER_BUFFER
+	if (es_bufs_per_desc > 0) {
+		if (encp->enc_rx_es_super_buffer_supported == B_FALSE) {
+			rc = ENOTSUP;
+			goto fail7;
+		}
+		if (!IS_P2ALIGNED(es_max_dma_len,
+			    EFX_RX_ES_SUPER_BUFFER_BUF_ALIGNMENT)) {
+			rc = EINVAL;
+			goto fail8;
+		}
+		if (!IS_P2ALIGNED(es_buf_stride,
+			    EFX_RX_ES_SUPER_BUFFER_BUF_ALIGNMENT)) {
+			rc = EINVAL;
+			goto fail9;
+		}
+	}
+#else /* EFSYS_OPT_RX_ES_SUPER_BUFFER */
+	EFSYS_ASSERT(es_bufs_per_desc == 0);
+#endif /* EFSYS_OPT_RX_ES_SUPER_BUFFER */
+
 	/* Scatter can only be disabled if the firmware supports doing so */
 	if (flags & EFX_RXQ_FLAG_SCATTER)
 		disable_scatter = B_FALSE;
@@ -1124,8 +1181,9 @@
 
 	if ((rc = efx_mcdi_init_rxq(enp, ndescs, eep->ee_index, label, index,
 		    esmp, disable_scatter, want_inner_classes,
-		    ps_buf_size)) != 0)
-		goto fail7;
+		    ps_buf_size, es_bufs_per_desc, es_max_dma_len,
+		    es_buf_stride, hol_block_timeout)) != 0)
+		goto fail10;
 
 	erp->er_eep = eep;
 	erp->er_label = label;
@@ -1136,8 +1194,16 @@
 
 	return (0);
 
+fail10:
+	EFSYS_PROBE(fail10);
+#if EFSYS_OPT_RX_ES_SUPER_BUFFER
+fail9:
+	EFSYS_PROBE(fail9);
+fail8:
+	EFSYS_PROBE(fail8);
 fail7:
 	EFSYS_PROBE(fail7);
+#endif /* EFSYS_OPT_RX_ES_SUPER_BUFFER */
 #if EFSYS_OPT_RX_PACKED_STREAM
 fail6:
 	EFSYS_PROBE(fail6);
Index: sys/dev/sfxge/common/efsys.h
===================================================================
--- sys/dev/sfxge/common/efsys.h
+++ sys/dev/sfxge/common/efsys.h
@@ -285,6 +285,8 @@
 
 #define	EFSYS_OPT_RX_PACKED_STREAM 0
 
+#define	EFSYS_OPT_RX_ES_SUPER_BUFFER 0
+
 #define	EFSYS_OPT_TUNNEL 0
 
 #define	EFSYS_OPT_FW_SUBVARIANT_AWARE 0
Index: sys/dev/sfxge/common/efx.h
===================================================================
--- sys/dev/sfxge/common/efx.h
+++ sys/dev/sfxge/common/efx.h
@@ -1893,7 +1893,7 @@
 	__in		uint32_t size,
 	__in		uint16_t flags);
 
-#if EFSYS_OPT_RX_PACKED_STREAM
+#if EFSYS_OPT_RX_PACKED_STREAM || EFSYS_OPT_RX_ES_SUPER_BUFFER
 
 /*
  * Packed stream mode is documented in SF-112241-TC.
@@ -1903,6 +1903,13 @@
  * packets are put there in a continuous stream.
  * The main advantage of such an approach is that RX queue refilling
  * happens much less frequently.
+ *
+ * Equal stride packed stream mode is documented in SF-119419-TC.
+ * The general idea is to utilize advantages of the packed stream,
+ * but avoid indirection in packets representation.
+ * The main advantage of such an approach is that RX queue refilling
+ * happens much less frequently and packets buffers are independent
+ * from upper layers point of view.
  */
 
 typedef	__checkReturn	boolean_t
@@ -2003,7 +2010,7 @@
 typedef struct efx_ev_callbacks_s {
 	efx_initialized_ev_t		eec_initialized;
 	efx_rx_ev_t			eec_rx;
-#if EFSYS_OPT_RX_PACKED_STREAM
+#if EFSYS_OPT_RX_PACKED_STREAM || EFSYS_OPT_RX_ES_SUPER_BUFFER
 	efx_rx_ps_ev_t			eec_rx_ps;
 #endif
 	efx_tx_ev_t			eec_tx;
@@ -2310,6 +2317,7 @@
 typedef enum efx_rxq_type_e {
 	EFX_RXQ_TYPE_DEFAULT,
 	EFX_RXQ_TYPE_PACKED_STREAM,
+	EFX_RXQ_TYPE_ES_SUPER_BUFFER,
 	EFX_RXQ_NTYPES
 } efx_rxq_type_t;
 
@@ -2363,6 +2371,28 @@
 
 #endif
 
+#if EFSYS_OPT_RX_ES_SUPER_BUFFER
+
+/* Maximum head-of-line block timeout in nanoseconds */
+#define	EFX_RXQ_ES_SUPER_BUFFER_HOL_BLOCK_MAX	(400U * 1000 * 1000)
+
+extern	__checkReturn	efx_rc_t
+efx_rx_qcreate_es_super_buffer(
+	__in		efx_nic_t *enp,
+	__in		unsigned int index,
+	__in		unsigned int label,
+	__in		uint32_t n_bufs_per_desc,
+	__in		uint32_t max_dma_len,
+	__in		uint32_t buf_stride,
+	__in		uint32_t hol_block_timeout,
+	__in		efsys_mem_t *esmp,
+	__in		size_t ndescs,
+	__in		unsigned int flags,
+	__in		efx_evq_t *eep,
+	__deref_out	efx_rxq_t **erpp);
+
+#endif
+
 typedef struct efx_buffer_s {
 	efsys_dma_addr_t	eb_addr;
 	size_t			eb_size;
Index: sys/dev/sfxge/common/efx_check.h
===================================================================
--- sys/dev/sfxge/common/efx_check.h
+++ sys/dev/sfxge/common/efx_check.h
@@ -370,6 +370,13 @@
 # endif
 #endif
 
+#if EFSYS_OPT_RX_ES_SUPER_BUFFER
+/* Support equal stride super-buffer mode */
+# if !(EFSYS_OPT_MEDFORD2)
+#  error "ES_SUPER_BUFFER requires MEDFORD2"
+# endif
+#endif
+
 /* Support hardware assistance for tunnels */
 #if EFSYS_OPT_TUNNEL
 # if !(EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2)
Index: sys/dev/sfxge/common/efx_impl.h
===================================================================
--- sys/dev/sfxge/common/efx_impl.h
+++ sys/dev/sfxge/common/efx_impl.h
@@ -165,6 +165,14 @@
 		uint32_t	eps_buf_size;
 	} ertd_packed_stream;
 #endif
+#if EFSYS_OPT_RX_ES_SUPER_BUFFER
+	struct {
+		uint32_t	eessb_bufs_per_desc;
+		uint32_t	eessb_max_dma_len;
+		uint32_t	eessb_buf_stride;
+		uint32_t	eessb_hol_block_timeout;
+	} ertd_es_super_buffer;
+#endif
 } efx_rxq_type_data_t;
 
 typedef struct efx_rx_ops_s {
@@ -763,9 +771,11 @@
 typedef struct efx_evq_rxq_state_s {
 	unsigned int			eers_rx_read_ptr;
 	unsigned int			eers_rx_mask;
-#if EFSYS_OPT_RX_PACKED_STREAM
+#if EFSYS_OPT_RX_PACKED_STREAM || EFSYS_OPT_RX_ES_SUPER_BUFFER
 	unsigned int			eers_rx_stream_npackets;
 	boolean_t			eers_rx_packed_stream;
+#endif
+#if EFSYS_OPT_RX_PACKED_STREAM
 	unsigned int			eers_rx_packed_stream_credits;
 #endif
 } efx_evq_rxq_state_t;
Index: sys/dev/sfxge/common/efx_rx.c
===================================================================
--- sys/dev/sfxge/common/efx_rx.c
+++ sys/dev/sfxge/common/efx_rx.c
@@ -871,6 +871,58 @@
 
 #endif
 
+#if EFSYS_OPT_RX_ES_SUPER_BUFFER
+
+	__checkReturn	efx_rc_t
+efx_rx_qcreate_es_super_buffer(
+	__in		efx_nic_t *enp,
+	__in		unsigned int index,
+	__in		unsigned int label,
+	__in		uint32_t n_bufs_per_desc,
+	__in		uint32_t max_dma_len,
+	__in		uint32_t buf_stride,
+	__in		uint32_t hol_block_timeout,
+	__in		efsys_mem_t *esmp,
+	__in		size_t ndescs,
+	__in		unsigned int flags,
+	__in		efx_evq_t *eep,
+	__deref_out	efx_rxq_t **erpp)
+{
+	efx_rc_t rc;
+	efx_rxq_type_data_t type_data;
+
+	if (hol_block_timeout > EFX_RXQ_ES_SUPER_BUFFER_HOL_BLOCK_MAX) {
+		rc = EINVAL;
+		goto fail1;
+	}
+
+	memset(&type_data, 0, sizeof (type_data));
+
+	type_data.ertd_es_super_buffer.eessb_bufs_per_desc = n_bufs_per_desc;
+	type_data.ertd_es_super_buffer.eessb_max_dma_len = max_dma_len;
+	type_data.ertd_es_super_buffer.eessb_buf_stride = buf_stride;
+	type_data.ertd_es_super_buffer.eessb_hol_block_timeout =
+	    hol_block_timeout;
+
+	rc = efx_rx_qcreate_internal(enp, index, label,
+	    EFX_RXQ_TYPE_ES_SUPER_BUFFER, &type_data, esmp, ndescs,
+	    0 /* id unused on EF10 */, flags, eep, erpp);
+	if (rc != 0)
+		goto fail2;
+
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+#endif
+
+
 			void
 efx_rx_qdestroy(
 	__in		efx_rxq_t *erp)