[dpdk-dev] [RFC 06/12] net/i40e: add support for s390x architecture

[Vivian Kong <vivkong@gmail.com>]

Enable i40e and i40e vector support on s390x.

Signed-off-by: Vivian Kong <vivkong@ca.ibm.com>
---
 doc/guides/nics/features/i40e.ini      |   1 +
 doc/guides/nics/features/i40e_vec.ini  |   1 +
 drivers/net/i40e/Makefile              |   2 +
 drivers/net/i40e/i40e_rxtx_vec_s390x.c | 631 +++++++++++++++++++++++++
 4 files changed, 635 insertions(+)
 create mode 100644 drivers/net/i40e/i40e_rxtx_vec_s390x.c

diff --git a/doc/guides/nics/features/i40e.ini b/doc/guides/nics/features/i40e.ini
index 16eab7f43..0c1acfc23 100644
--- a/doc/guides/nics/features/i40e.ini
+++ b/doc/guides/nics/features/i40e.ini
@@ -55,3 +55,4 @@ x86-32               = Y
 x86-64               = Y
 ARMv8                = Y
 Power8               = Y
+s390x                = Y
diff --git a/doc/guides/nics/features/i40e_vec.ini b/doc/guides/nics/features/i40e_vec.ini
index c65e8b036..8c5062698 100644
--- a/doc/guides/nics/features/i40e_vec.ini
+++ b/doc/guides/nics/features/i40e_vec.ini
@@ -43,3 +43,4 @@ x86-32               = Y
 x86-64               = Y
 ARMv8                = Y
 Power8               = Y
+s390x                = Y
diff --git a/drivers/net/i40e/Makefile b/drivers/net/i40e/Makefile
index 3f869a8d6..d13223cc9 100644
--- a/drivers/net/i40e/Makefile
+++ b/drivers/net/i40e/Makefile
@@ -78,6 +78,8 @@ ifeq ($(CONFIG_RTE_ARCH_ARM64),y)
 SRCS-$(CONFIG_RTE_LIBRTE_I40E_INC_VECTOR) += i40e_rxtx_vec_neon.c
 else ifeq ($(CONFIG_RTE_ARCH_PPC_64),y)
 SRCS-$(CONFIG_RTE_LIBRTE_I40E_INC_VECTOR) += i40e_rxtx_vec_altivec.c
+else ifeq ($(CONFIG_RTE_ARCH_S390X),y)
+SRCS-$(CONFIG_RTE_LIBRTE_I40E_INC_VECTOR) += i40e_rxtx_vec_s390x.c
 else
 SRCS-$(CONFIG_RTE_LIBRTE_I40E_INC_VECTOR) += i40e_rxtx_vec_sse.c
 endif
diff --git a/drivers/net/i40e/i40e_rxtx_vec_s390x.c b/drivers/net/i40e/i40e_rxtx_vec_s390x.c
new file mode 100644
index 000000000..b35ab0678
--- /dev/null
+++ b/drivers/net/i40e/i40e_rxtx_vec_s390x.c
@@ -0,0 +1,631 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
+ * (c) Copyright IBM Corp. 2017, 2019
+ */
+
+#include <stdint.h>
+#include <vecintrin.h>
+#include <rte_ethdev_driver.h>
+#include <rte_malloc.h>
+
+#include "base/i40e_prototype.h"
+#include "base/i40e_type.h"
+#include "i40e_ethdev.h"
+#include "i40e_rxtx.h"
+#include "i40e_rxtx_vec_common.h"
+
+#pragma GCC diagnostic ignored "-Wcast-qual"
+
+typedef unsigned long long vector_unsigned_long_long
+	__attribute__((vector_size(2 * sizeof(unsigned long long))));
+typedef unsigned int vector_unsigned_int
+	__attribute__((vector_size(4 * sizeof(unsigned int))));
+typedef unsigned short vector_unsigned_short
+	__attribute__((vector_size(8 * sizeof(unsigned short))));
+typedef unsigned char vector_unsigned_char
+	__attribute__((vector_size(16 * sizeof(unsigned char))));
+
+
+static inline void
+i40e_rxq_rearm(struct i40e_rx_queue *rxq)
+{
+	int i;
+	uint16_t rx_id;
+	volatile union i40e_rx_desc *rxdp;
+
+	struct i40e_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start];
+	struct rte_mbuf *mb0, *mb1;
+
+	vector_unsigned_long_long hdr_room = (vector_unsigned_long_long){
+						RTE_PKTMBUF_HEADROOM,
+						RTE_PKTMBUF_HEADROOM};
+	vector_unsigned_long_long dma_addr0, dma_addr1;
+
+	rxdp = rxq->rx_ring + rxq->rxrearm_start;
+
+	/* Pull 'n' more MBUFs into the software ring */
+	if (rte_mempool_get_bulk(rxq->mp,
+				 (void *)rxep,
+				 RTE_I40E_RXQ_REARM_THRESH) < 0) {
+		if (rxq->rxrearm_nb + RTE_I40E_RXQ_REARM_THRESH >=
+		    rxq->nb_rx_desc) {
+			dma_addr0 = (vector_unsigned_long_long){};
+			for (i = 0; i < RTE_I40E_DESCS_PER_LOOP; i++) {
+				rxep[i].mbuf = &rxq->fake_mbuf;
+				vec_xstd2(dma_addr0, 0,
+					(unsigned long long *)&rxdp[i].read);
+			}
+		}
+		rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
+			RTE_I40E_RXQ_REARM_THRESH;
+		return;
+	}
+
+	/* Initialize the mbufs in vector, process 2 mbufs in one loop */
+	for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; i += 2, rxep += 2) {
+		vector_unsigned_long_long vaddr0, vaddr1;
+		uintptr_t p0, p1;
+
+		mb0 = rxep[0].mbuf;
+		mb1 = rxep[1].mbuf;
+
+		 /* Flush mbuf with pkt template.
+		  * Data to be rearmed is 6 bytes long.
+		  * Though, RX will overwrite ol_flags that are coming next
+		  * anyway. So overwrite whole 8 bytes with one load:
+		  * 6 bytes of rearm_data plus first 2 bytes of ol_flags.
+		  */
+		p0 = (uintptr_t)&mb0->rearm_data;
+		*(uint64_t *)p0 = rxq->mbuf_initializer;
+		p1 = (uintptr_t)&mb1->rearm_data;
+		*(uint64_t *)p1 = rxq->mbuf_initializer;
+
+		/* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */
+		vaddr0 = vec_xld2(0, (unsigned long long *)&mb0->buf_addr);
+		vaddr1 = vec_xld2(0, (unsigned long long *)&mb1->buf_addr);
+
+		/* convert pa to dma_addr hdr/data */
+		dma_addr0 = vec_mergel(vaddr0, vaddr0);
+		dma_addr1 = vec_mergel(vaddr1, vaddr1);
+
+		/* add headroom to pa values */
+		dma_addr0 = dma_addr0 + hdr_room;
+		dma_addr1 = dma_addr1 + hdr_room;
+
+		/* flush desc with pa dma_addr */
+		vec_xstd2(dma_addr0, 0, (unsigned long long *)&rxdp++->read);
+		vec_xstd2(dma_addr1, 0, (unsigned long long *)&rxdp++->read);
+	}
+
+	rxq->rxrearm_start += RTE_I40E_RXQ_REARM_THRESH;
+	if (rxq->rxrearm_start >= rxq->nb_rx_desc)
+		rxq->rxrearm_start = 0;
+
+	rxq->rxrearm_nb -= RTE_I40E_RXQ_REARM_THRESH;
+
+	rx_id = (uint16_t)((rxq->rxrearm_start == 0) ?
+			     (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1));
+
+	/* Update the tail pointer on the NIC */
+	I40E_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
+}
+
+static inline void
+desc_to_olflags_v(vector_unsigned_long_long descs[4], struct rte_mbuf **rx_pkts)
+{
+	vector_unsigned_int vlan0, vlan1, rss, l3_l4e;
+
+	/* mask everything except RSS, flow director and VLAN flags
+	 * bit2 is for VLAN tag, bit11 for flow director indication
+	 * bit13:12 for RSS indication.
+	 */
+	const vector_unsigned_int rss_vlan_msk = (vector_unsigned_int){
+			(int32_t)0x1c03804, (int32_t)0x1c03804,
+			(int32_t)0x1c03804, (int32_t)0x1c03804};
+
+	/* map rss and vlan type to rss hash and vlan flag */
+	const vector_unsigned_char vlan_flags = (vector_unsigned_char){
+			0, 0, 0, 0,
+			PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED, 0, 0, 0,
+			0, 0, 0, 0,
+			0, 0, 0, 0};
+
+	const vector_unsigned_char rss_flags = (vector_unsigned_char){
+			0, PKT_RX_FDIR, 0, 0,
+			0, 0, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH | PKT_RX_FDIR,
+			0, 0, 0, 0,
+			0, 0, 0, 0};
+
+	const vector_unsigned_char l3_l4e_flags = (vector_unsigned_char){
+			0,
+			PKT_RX_IP_CKSUM_BAD,
+			PKT_RX_L4_CKSUM_BAD,
+			PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD,
+			PKT_RX_EIP_CKSUM_BAD,
+			PKT_RX_EIP_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD,
+			PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD,
+			PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD
+					     | PKT_RX_IP_CKSUM_BAD,
+			0, 0, 0, 0, 0, 0, 0, 0};
+
+	vlan0 = (vector_unsigned_int)vec_mergel(descs[0], descs[1]);
+	vlan1 = (vector_unsigned_int)vec_mergel(descs[2], descs[3]);
+	vlan0 = (vector_unsigned_int)vec_mergeh(vlan0, vlan1);
+
+	vlan1 = vec_and(vlan0, rss_vlan_msk);
+	vlan0 = (vector_unsigned_int)vec_perm(vlan_flags,
+					(vector_unsigned_char){},
+					*(vector_unsigned_char *)&vlan1);
+
+	rss[0] = (uint32_t)vlan1[0] >> 11;
+	rss[1] = (uint32_t)vlan1[1] >> 11;
+	rss[2] = (uint32_t)vlan1[2] >> 11;
+	rss[3] = (uint32_t)vlan1[3] >> 11;
+	rss = (vector_unsigned_int)vec_perm(rss_flags, (vector_unsigned_char){},
+					*(vector_unsigned_char *)&rss);
+
+	l3_l4e[0] = (uint32_t)vlan1[0] >> 22;
+	l3_l4e[1] = (uint32_t)vlan1[1] >> 22;
+	l3_l4e[2] = (uint32_t)vlan1[2] >> 22;
+	l3_l4e[3] = (uint32_t)vlan1[3] >> 22;
+
+	l3_l4e = (vector_unsigned_int)vec_perm(l3_l4e_flags,
+					(vector_unsigned_char){},
+					*(vector_unsigned_char *)&l3_l4e);
+
+	vlan0 = vec_or(vlan0, rss);
+	vlan0 = vec_or(vlan0, l3_l4e);
+
+	rx_pkts[0]->ol_flags = (uint64_t)vlan0[2];
+	rx_pkts[1]->ol_flags = (uint64_t)vlan0[3];
+	rx_pkts[2]->ol_flags = (uint64_t)vlan0[0];
+	rx_pkts[3]->ol_flags = (uint64_t)vlan0[1];
+}
+
+#define PKTLEN_SHIFT     10
+
+static inline void
+desc_to_ptype_v(vector_unsigned_long_long descs[4], struct rte_mbuf **rx_pkts,
+		uint32_t *ptype_tbl)
+{
+	vector_unsigned_long_long ptype0 = vec_mergel(descs[0], descs[1]);
+	vector_unsigned_long_long ptype1 = vec_mergel(descs[2], descs[3]);
+
+	ptype0[0] = ptype0[0] >> 30;
+	ptype0[1] = ptype0[1] >> 30;
+
+	ptype1[0] = ptype1[0] >> 30;
+	ptype1[1] = ptype1[1] >> 30;
+
+	rx_pkts[0]->packet_type =
+		ptype_tbl[(*(vector_unsigned_char *)&ptype0)[0]];
+	rx_pkts[1]->packet_type =
+		ptype_tbl[(*(vector_unsigned_char *)&ptype0)[8]];
+	rx_pkts[2]->packet_type =
+		ptype_tbl[(*(vector_unsigned_char *)&ptype1)[0]];
+	rx_pkts[3]->packet_type =
+		ptype_tbl[(*(vector_unsigned_char *)&ptype1)[8]];
+}
+
+ /* Notice:
+  * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
+  * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
+  *   numbers of DD bits
+  */
+static inline uint16_t
+_recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
+		   uint16_t nb_pkts, uint8_t *split_packet)
+{
+	volatile union i40e_rx_desc *rxdp;
+	struct i40e_rx_entry *sw_ring;
+	uint16_t nb_pkts_recd;
+	int pos;
+	uint64_t var;
+	vector_unsigned_char shuf_msk;
+	uint32_t *ptype_tbl = rxq->vsi->adapter->ptype_tbl;
+
+	vector_unsigned_short crc_adjust = (vector_unsigned_short){
+		0, 0,         /* ignore pkt_type field */
+		rxq->crc_len, /* sub crc on pkt_len */
+		0,            /* ignore high-16bits of pkt_len */
+		rxq->crc_len, /* sub crc on data_len */
+		0, 0, 0       /* ignore non-length fields */
+		};
+	vector_unsigned_long_long dd_check, eop_check;
+
+	/* nb_pkts shall be less equal than RTE_I40E_MAX_RX_BURST */
+	nb_pkts = RTE_MIN(nb_pkts, RTE_I40E_MAX_RX_BURST);
+
+	/* nb_pkts has to be floor-aligned to RTE_I40E_DESCS_PER_LOOP */
+	nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_I40E_DESCS_PER_LOOP);
+
+	/* Just the act of getting into the function from the application is
+	 * going to cost about 7 cycles
+	 */
+	rxdp = rxq->rx_ring + rxq->rx_tail;
+
+	rte_prefetch0(rxdp);
+
+	/* See if we need to rearm the RX queue - gives the prefetch a bit
+	 * of time to act
+	 */
+	if (rxq->rxrearm_nb > RTE_I40E_RXQ_REARM_THRESH)
+		i40e_rxq_rearm(rxq);
+
+	/* Before we start moving massive data around, check to see if
+	 * there is actually a packet available
+	 */
+	if (!(rxdp->wb.qword1.status_error_len &
+			rte_cpu_to_le_32(1 << I40E_RX_DESC_STATUS_DD_SHIFT)))
+		return 0;
+
+	/* 4 packets DD mask */
+	dd_check = (vector_unsigned_long_long){0x0000000100000001ULL,
+					  0x0000000100000001ULL};
+
+	/* 4 packets EOP mask */
+	eop_check = (vector_unsigned_long_long){0x0000000200000002ULL,
+					   0x0000000200000002ULL};
+
+	/* mask to shuffle from desc. to mbuf */
+	shuf_msk = (vector_unsigned_char){
+		0xFF, 0xFF,   /* pkt_type set as unknown */
+		0xFF, 0xFF,   /* pkt_type set as unknown */
+		14, 15,       /* octet 15~14, low 16 bits pkt_len */
+		0xFF, 0xFF,   /* skip high 16 bits pkt_len, zero out */
+		14, 15,       /* octet 15~14, 16 bits data_len */
+		2, 3,         /* octet 2~3, low 16 bits vlan_macip */
+		4, 5, 6, 7    /* octet 4~7, 32bits rss */
+		};
+
+	/* Cache is empty -> need to scan the buffer rings, but first move
+	 * the next 'n' mbufs into the cache
+	 */
+	sw_ring = &rxq->sw_ring[rxq->rx_tail];
+
+	/* A. load 4 packet in one loop
+	 * [A*. mask out 4 unused dirty field in desc]
+	 * B. copy 4 mbuf point from swring to rx_pkts
+	 * C. calc the number of DD bits among the 4 packets
+	 * [C*. extract the end-of-packet bit, if requested]
+	 * D. fill info. from desc to mbuf
+	 */
+
+	for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
+			pos += RTE_I40E_DESCS_PER_LOOP,
+			rxdp += RTE_I40E_DESCS_PER_LOOP) {
+		vector_unsigned_long_long descs[RTE_I40E_DESCS_PER_LOOP];
+		vector_unsigned_char pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
+		vector_unsigned_short staterr, sterr_tmp1, sterr_tmp2;
+		vector_unsigned_long_long mbp1, mbp2;  /* two mbuf pointer
+							* in one XMM reg.
+							*/
+
+		/* B.1 load 1 mbuf point */
+		mbp1 = *(vector_unsigned_long_long *)&sw_ring[pos];
+		/* Read desc statuses backwards to avoid race condition */
+		/* A.1 load 4 pkts desc */
+		descs[3] = *(vector_unsigned_long_long *)(rxdp + 3);
+		rte_compiler_barrier();
+
+		/* B.2 copy 2 mbuf point into rx_pkts  */
+		*(vector_unsigned_long_long *)&rx_pkts[pos] = mbp1;
+
+		/* B.1 load 1 mbuf point */
+		mbp2 = *(vector_unsigned_long_long *)&sw_ring[pos + 2];
+
+		descs[2] = *(vector_unsigned_long_long *)(rxdp + 2);
+		rte_compiler_barrier();
+		/* B.1 load 2 mbuf point */
+		descs[1] = *(vector_unsigned_long_long *)(rxdp + 1);
+		rte_compiler_barrier();
+		descs[0] = *(vector_unsigned_long_long *)(rxdp);
+
+		/* B.2 copy 2 mbuf point into rx_pkts  */
+		*(vector_unsigned_long_long *)&rx_pkts[pos + 2] =  mbp2;
+
+		if (split_packet) {
+			rte_mbuf_prefetch_part2(rx_pkts[pos]);
+			rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
+			rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
+			rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
+		}
+
+		/* avoid compiler reorder optimization */
+		rte_compiler_barrier();
+
+		/* pkt 3,4 shift the pktlen field to be 16-bit aligned*/
+		vector_unsigned_int len3_temp = vec_xld2(0,
+				(unsigned int *)&descs[3]);
+		len3_temp[3] = len3_temp[3] << PKTLEN_SHIFT;
+		const vector_unsigned_int len3 = len3_temp;
+
+		vector_unsigned_int len2_temp = vec_xld2(0,
+				(unsigned int *)&descs[2]);
+		len2_temp[3] = len2_temp[3] << PKTLEN_SHIFT;
+		const vector_unsigned_int len2 = len2_temp;
+
+		/* merge the now-aligned packet length fields back in */
+		descs[3] = (vector_unsigned_long_long)len3;
+		descs[2] = (vector_unsigned_long_long)len2;
+
+		/* D.1 pkt 3,4 convert format from desc to pktmbuf */
+		pkt_mb4 = vec_perm((vector_unsigned_char)descs[3],
+				  (vector_unsigned_char){}, shuf_msk);
+		pkt_mb3 = vec_perm((vector_unsigned_char)descs[2],
+				  (vector_unsigned_char){}, shuf_msk);
+
+		/* C.1 4=>2 filter staterr info only */
+		sterr_tmp2 = vec_mergel((vector_unsigned_short)descs[3],
+					(vector_unsigned_short)descs[2]);
+		/* C.1 4=>2 filter staterr info only */
+		sterr_tmp1 = vec_mergel((vector_unsigned_short)descs[1],
+					(vector_unsigned_short)descs[0]);
+		/* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
+		pkt_mb4 = (vector_unsigned_char)((vector_unsigned_short)pkt_mb4
+				- crc_adjust);
+		pkt_mb3 = (vector_unsigned_char)((vector_unsigned_short)pkt_mb3
+				- crc_adjust);
+
+		/* pkt 1,2 shift the pktlen field to be 16-bit aligned*/
+		const vector_unsigned_int len1 =
+			vec_sll(vec_xld2(0, (unsigned int *)&descs[1]),
+			(vector_unsigned_int){0, 0, 0, PKTLEN_SHIFT});
+		const vector_unsigned_int len0 =
+			vec_sll(vec_xld2(0, (unsigned int *)&descs[0]),
+			(vector_unsigned_int){0, 0, 0, PKTLEN_SHIFT});
+
+		/* merge the now-aligned packet length fields back in */
+		descs[1] = (vector_unsigned_long_long)len1;
+		descs[0] = (vector_unsigned_long_long)len0;
+
+		/* D.1 pkt 1,2 convert format from desc to pktmbuf */
+		pkt_mb2 = vec_perm((vector_unsigned_char)descs[1],
+				   (vector_unsigned_char){}, shuf_msk);
+		pkt_mb1 = vec_perm((vector_unsigned_char)descs[0],
+				   (vector_unsigned_char){}, shuf_msk);
+
+		/* C.2 get 4 pkts staterr value  */
+		staterr = (vector_unsigned_short)vec_mergeh(sterr_tmp1,
+				sterr_tmp2);
+
+		/* D.3 copy final 3,4 data to rx_pkts */
+		vec_xstd2(pkt_mb4, 0, (unsigned char *)&rx_pkts[pos + 3]
+			->rx_descriptor_fields1);
+		vec_xstd2(pkt_mb3, 0, (unsigned char *)&rx_pkts[pos + 2]
+			->rx_descriptor_fields1);
+
+		/* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
+		pkt_mb2 = (vector_unsigned_char)((vector_unsigned_short)pkt_mb2
+				- crc_adjust);
+		pkt_mb1 = (vector_unsigned_char)((vector_unsigned_short)pkt_mb1
+				- crc_adjust);
+
+		/* C* extract and record EOP bit */
+		if (split_packet) {
+			vector_unsigned_char eop_shuf_mask =
+				(vector_unsigned_char){
+					0xFF, 0xFF, 0xFF, 0xFF,
+					0xFF, 0xFF, 0xFF, 0xFF,
+					0xFF, 0xFF, 0xFF, 0xFF,
+					0x04, 0x0C, 0x00, 0x08
+				};
+
+			/* and with mask to extract bits, flipping 1-0 */
+			vector_unsigned_char eop_bits =
+				vec_and((vector_unsigned_char)vec_nor(staterr,
+				staterr), (vector_unsigned_char)eop_check);
+			/* the staterr values are not in order, as the count
+			 * count of dd bits doesn't care. However, for end of
+			 * packet tracking, we do care, so shuffle. This also
+			 * compresses the 32-bit values to 8-bit
+			 */
+			eop_bits = vec_perm(eop_bits, (vector_unsigned_char){},
+					    eop_shuf_mask);
+			/* store the resulting 32-bit value */
+			*split_packet = (vec_xld2(0,
+					 (unsigned int *)&eop_bits))[0];
+			split_packet += RTE_I40E_DESCS_PER_LOOP;
+
+			/* zero-out next pointers */
+			rx_pkts[pos]->next = NULL;
+			rx_pkts[pos + 1]->next = NULL;
+			rx_pkts[pos + 2]->next = NULL;
+			rx_pkts[pos + 3]->next = NULL;
+		}
+
+		/* C.3 calc available number of desc */
+		staterr = vec_and(staterr, (vector_unsigned_short)dd_check);
+
+		/* D.3 copy final 1,2 data to rx_pkts */
+		vec_xstd2(pkt_mb2, 0, (unsigned char *)&rx_pkts[pos + 1]
+			->rx_descriptor_fields1);
+		vec_xstd2(pkt_mb1, 0, (unsigned char *)&rx_pkts[pos]
+			->rx_descriptor_fields1);
+
+		desc_to_ptype_v(descs, &rx_pkts[pos], ptype_tbl);
+		desc_to_olflags_v(descs, &rx_pkts[pos]);
+
+		/* C.4 calc avaialbe number of desc */
+		var = __builtin_popcountll((vec_xld2(0,
+			(unsigned long long *)&staterr)[0]));
+		nb_pkts_recd += var;
+		if (likely(var != RTE_I40E_DESCS_PER_LOOP))
+			break;
+	}
+
+	/* Update our internal tail pointer */
+	rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_pkts_recd);
+	rxq->rx_tail = (uint16_t)(rxq->rx_tail & (rxq->nb_rx_desc - 1));
+	rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
+
+	return nb_pkts_recd;
+}
+
+ /* Notice:
+  * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
+  * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
+  *   numbers of DD bits
+  */
+uint16_t
+i40e_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
+		   uint16_t nb_pkts)
+{
+	return _recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL);
+}
+
+ /* vPMD receive routine that reassembles scattered packets
+  * Notice:
+  * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
+  * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
+  *   numbers of DD bits
+  */
+uint16_t
+i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
+			     uint16_t nb_pkts)
+{
+	struct i40e_rx_queue *rxq = rx_queue;
+	uint8_t split_flags[RTE_I40E_VPMD_RX_BURST] = {0};
+
+	/* get some new buffers */
+	uint16_t nb_bufs = _recv_raw_pkts_vec(rxq, rx_pkts, nb_pkts,
+			split_flags);
+	if (nb_bufs == 0)
+		return 0;
+
+	/* happy day case, full burst + no packets to be joined */
+	const uint64_t *split_fl64 = (uint64_t *)split_flags;
+
+	if (rxq->pkt_first_seg == NULL &&
+	    split_fl64[0] == 0 && split_fl64[1] == 0 &&
+	    split_fl64[2] == 0 && split_fl64[3] == 0)
+		return nb_bufs;
+
+	/* reassemble any packets that need reassembly*/
+	unsigned int i = 0;
+
+	if (!rxq->pkt_first_seg) {
+		/* find the first split flag, and only reassemble then*/
+		while (i < nb_bufs && !split_flags[i])
+			i++;
+		if (i == nb_bufs)
+			return nb_bufs;
+	}
+	return i + reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
+		&split_flags[i]);
+}
+
+static inline void
+vtx1(volatile struct i40e_tx_desc *txdp,
+	struct rte_mbuf *pkt, uint64_t flags)
+{
+	uint64_t high_qw = (I40E_TX_DESC_DTYPE_DATA |
+		((uint64_t)flags  << I40E_TXD_QW1_CMD_SHIFT) |
+		((uint64_t)pkt->data_len << I40E_TXD_QW1_TX_BUF_SZ_SHIFT));
+
+	vector_unsigned_long_long descriptor = (vector_unsigned_long_long){
+		pkt->buf_iova + pkt->data_off, high_qw};
+	*(vector_unsigned_long_long *)txdp = descriptor;
+}
+
+static inline void
+vtx(volatile struct i40e_tx_desc *txdp,
+	struct rte_mbuf **pkt, uint16_t nb_pkts,  uint64_t flags)
+{
+	int i;
+
+	for (i = 0; i < nb_pkts; ++i, ++txdp, ++pkt)
+		vtx1(txdp, *pkt, flags);
+}
+
+uint16_t
+i40e_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
+			  uint16_t nb_pkts)
+{
+	struct i40e_tx_queue *txq = (struct i40e_tx_queue *)tx_queue;
+	volatile struct i40e_tx_desc *txdp;
+	struct i40e_tx_entry *txep;
+	uint16_t n, nb_commit, tx_id;
+	uint64_t flags = I40E_TD_CMD;
+	uint64_t rs = I40E_TX_DESC_CMD_RS | I40E_TD_CMD;
+	int i;
+
+	/* cross rx_thresh boundary is not allowed */
+	nb_pkts = RTE_MIN(nb_pkts, txq->tx_rs_thresh);
+
+	if (txq->nb_tx_free < txq->tx_free_thresh)
+		i40e_tx_free_bufs(txq);
+
+	nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
+	nb_commit = nb_pkts;
+	if (unlikely(nb_pkts == 0))
+		return 0;
+
+	tx_id = txq->tx_tail;
+	txdp = &txq->tx_ring[tx_id];
+	txep = &txq->sw_ring[tx_id];
+
+	txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
+
+	n = (uint16_t)(txq->nb_tx_desc - tx_id);
+	if (nb_commit >= n) {
+		tx_backlog_entry(txep, tx_pkts, n);
+
+		for (i = 0; i < n - 1; ++i, ++tx_pkts, ++txdp)
+			vtx1(txdp, *tx_pkts, flags);
+
+		vtx1(txdp, *tx_pkts++, rs);
+
+		nb_commit = (uint16_t)(nb_commit - n);
+
+		tx_id = 0;
+		txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
+
+		/* avoid reach the end of ring */
+		txdp = &txq->tx_ring[tx_id];
+		txep = &txq->sw_ring[tx_id];
+	}
+
+	tx_backlog_entry(txep, tx_pkts, nb_commit);
+
+	vtx(txdp, tx_pkts, nb_commit, flags);
+
+	tx_id = (uint16_t)(tx_id + nb_commit);
+	if (tx_id > txq->tx_next_rs) {
+		txq->tx_ring[txq->tx_next_rs].cmd_type_offset_bsz |=
+			rte_cpu_to_le_64(((uint64_t)I40E_TX_DESC_CMD_RS) <<
+						I40E_TXD_QW1_CMD_SHIFT);
+		txq->tx_next_rs =
+			(uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh);
+	}
+
+	txq->tx_tail = tx_id;
+
+	I40E_PCI_REG_WRITE(txq->qtx_tail, txq->tx_tail);
+
+	return nb_pkts;
+}
+
+void __attribute__((cold))
+i40e_rx_queue_release_mbufs_vec(struct i40e_rx_queue *rxq)
+{
+	_i40e_rx_queue_release_mbufs_vec(rxq);
+}
+
+int __attribute__((cold))
+i40e_rxq_vec_setup(struct i40e_rx_queue *rxq)
+{
+	return i40e_rxq_vec_setup_default(rxq);
+}
+
+int __attribute__((cold))
+i40e_txq_vec_setup(struct i40e_tx_queue __rte_unused * txq)
+{
+	return 0;
+}
+
+int __attribute__((cold))
+i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev)
+{
+	return i40e_rx_vec_dev_conf_condition_check_default(dev);
+}
-- 
2.17.1