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* [dpdk-dev] [PATCH] net/mlx5: add support for vectorized code on Power systems
@ 2019-08-15 22:02 David Christensen
  2019-08-16 17:56 ` [dpdk-dev] [PATCH v2] " David Christensen
  0 siblings, 1 reply; 4+ messages in thread
From: David Christensen @ 2019-08-15 22:02 UTC (permalink / raw)
  To: shahafs, yskoh, viacheslavo; +Cc: dev, David Christensen

Added mlx5_rxtx_vec_altivec.h which supports vectorized RX
using Altivec vector code.  Modified associated build files
to use the new code.

Cc: shahafs@mellanox.com
Cc: yskoh@mellanox.com
Cc: viacheslavo@mellanox.com

Signed-off-by: David Christensen <drc@linux.vnet.ibm.com>
---
 drivers/net/mlx5/Makefile                |    1 +
 drivers/net/mlx5/meson.build             |    4 +-
 drivers/net/mlx5/mlx5_rxtx_vec.c         |    2 +
 drivers/net/mlx5/mlx5_rxtx_vec_altivec.h | 1074 ++++++++++++++++++++++++++++++
 4 files changed, 1080 insertions(+), 1 deletion(-)
 create mode 100644 drivers/net/mlx5/mlx5_rxtx_vec_altivec.h

diff --git a/drivers/net/mlx5/Makefile b/drivers/net/mlx5/Makefile
index dbb2a4e..9f6a7b4 100644
--- a/drivers/net/mlx5/Makefile
+++ b/drivers/net/mlx5/Makefile
@@ -19,6 +19,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_rxq.c
 SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_txq.c
 SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_rxtx.c
 ifneq ($(filter y,$(CONFIG_RTE_ARCH_X86_64) \
+			$(CONFIG_RTE_ARCH_PPC_64) \
 		  $(CONFIG_RTE_ARCH_ARM64)),)
 SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_rxtx_vec.c
 endif
diff --git a/drivers/net/mlx5/meson.build b/drivers/net/mlx5/meson.build
index 62b41ca..090b4d4 100644
--- a/drivers/net/mlx5/meson.build
+++ b/drivers/net/mlx5/meson.build
@@ -59,7 +59,9 @@ if build
 		'mlx5_vlan.c',
 		'mlx5_devx_cmds.c',
 	)
-	if dpdk_conf.has('RTE_ARCH_X86_64') or dpdk_conf.has('RTE_ARCH_ARM64')
+	if dpdk_conf.has('RTE_ARCH_X86_64')
+		or dpdk_conf.has('RTE_ARCH_ARM64')
+		or dpdk_conf.has('RTE_ARCH_PPC_64')
 		sources += files('mlx5_rxtx_vec.c')
 	endif
 	if not pmd_dlopen
diff --git a/drivers/net/mlx5/mlx5_rxtx_vec.c b/drivers/net/mlx5/mlx5_rxtx_vec.c
index 3925f4d..d85f908 100644
--- a/drivers/net/mlx5/mlx5_rxtx_vec.c
+++ b/drivers/net/mlx5/mlx5_rxtx_vec.c
@@ -35,6 +35,8 @@
 #include "mlx5_rxtx_vec_sse.h"
 #elif defined RTE_ARCH_ARM64
 #include "mlx5_rxtx_vec_neon.h"
+#elif defined RTE_ARCH_PPC_64
+#include "mlx5_rxtx_vec_altivec.h"
 #else
 #error "This should not be compiled if SIMD instructions are not supported."
 #endif
diff --git a/drivers/net/mlx5/mlx5_rxtx_vec_altivec.h b/drivers/net/mlx5/mlx5_rxtx_vec_altivec.h
new file mode 100644
index 0000000..3be3a6d
--- /dev/null
+++ b/drivers/net/mlx5/mlx5_rxtx_vec_altivec.h
@@ -0,0 +1,1074 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2017 6WIND S.A.
+ * Copyright 2017 Mellanox Technologies, Ltd
+ */
+
+#ifndef RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_
+#define RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_
+
+#include <assert.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <altivec.h>
+
+#include <rte_mbuf.h>
+#include <rte_mempool.h>
+#include <rte_prefetch.h>
+
+#include "mlx5.h"
+#include "mlx5_utils.h"
+#include "mlx5_rxtx.h"
+#include "mlx5_rxtx_vec.h"
+#include "mlx5_autoconf.h"
+#include "mlx5_defs.h"
+#include "mlx5_prm.h"
+
+#ifndef __INTEL_COMPILER
+#pragma GCC diagnostic ignored "-Wcast-qual"
+#pragma GCC diagnostic ignored "-Wstrict-aliasing"
+#endif
+
+/**
+ * Store free buffers to RX SW ring.
+ *
+ * @param rxq
+ *   Pointer to RX queue structure.
+ * @param pkts
+ *   Pointer to array of packets to be stored.
+ * @param pkts_n
+ *   Number of packets to be stored.
+ */
+static inline void
+rxq_copy_mbuf_v(struct mlx5_rxq_data *rxq, struct rte_mbuf **pkts, uint16_t n)
+{
+	const uint16_t q_mask = (1 << rxq->elts_n) - 1;
+	struct rte_mbuf **elts = &(*rxq->elts)[rxq->rq_pi & q_mask];
+	unsigned int pos;
+	uint16_t p = n & -2;
+
+	for (pos = 0; pos < p; pos += 2) {
+		vector unsigned char mbp;
+
+		mbp = (vector unsigned char)vec_vsx_ld(0,
+				(signed int const *)&elts[pos]);
+		*(vector unsigned char *)&pkts[pos] = mbp;
+	}
+	if (n & 1)
+		pkts[pos] = elts[pos];
+}
+
+/**
+ * Decompress a compressed completion and fill in mbufs in RX SW ring with data
+ * extracted from the title completion descriptor.
+ *
+ * @param rxq
+ *   Pointer to RX queue structure.
+ * @param cq
+ *   Pointer to completion array having a compressed completion at first.
+ * @param elts
+ *   Pointer to SW ring to be filled. The first mbuf has to be pre-built from
+ *   the title completion descriptor to be copied to the rest of mbufs.
+ *
+ * @return
+ *   Number of mini-CQEs successfully decompressed.
+ */
+static inline uint16_t
+rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq,
+		    struct rte_mbuf **elts)
+{
+	volatile struct mlx5_mini_cqe8 *mcq = (void *)&(cq + 1)->pkt_info;
+	struct rte_mbuf *t_pkt = elts[0]; /* Title packet is pre-built. */
+	const vector unsigned char zero = (vector unsigned char){0};
+	/* Mask to shuffle from extracted mini CQE to mbuf. */
+	const vector unsigned char shuf_mask1 = (vector unsigned char){
+			-1, -1, -1, -1,   /* skip packet_type */
+			 7,  6, -1, -1,   /* bswap16, pkt_len */
+			 7,  6,           /* bswap16, data_len */
+			-1, -1,           /* skip vlan_tci */
+			 3,  2,  1,  0};  /* bswap32, rss */
+	const vector unsigned char shuf_mask2 = (vector unsigned char){
+			-1, -1, -1, -1,   /* skip packet_type */
+			15, 14, -1, -1,   /* bswap16, pkt_len */
+			15, 14,           /* data_len, bswap16 */
+			-1, -1,           /* skip vlan_tci */
+			11, 10,  9,  8};  /* bswap32, rss */
+	/* Restore the compressed count. Must be 16 bits. */
+	const uint16_t mcqe_n = t_pkt->data_len +
+		(rxq->crc_present * RTE_ETHER_CRC_LEN);
+	const vector unsigned char rearm =
+		(vector unsigned char)vec_vsx_ld(0,
+		(signed int const *)&t_pkt->rearm_data);
+	const vector unsigned char rxdf =
+		(vector unsigned char)vec_vsx_ld(0,
+		(signed int const *)&t_pkt->rx_descriptor_fields1);
+	const vector unsigned char crc_adj =
+		(vector unsigned char)(vector unsigned short){
+			0, 0, rxq->crc_present * RTE_ETHER_CRC_LEN, 0,
+			rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 0, 0};
+	const vector unsigned short rxdf_sel_mask =
+		(vector unsigned short){
+			0xffff, 0xffff, 0, 0, 0, 0xffff, 0, 0};
+	const uint32_t flow_tag = t_pkt->hash.fdir.hi;
+	unsigned int pos;
+	unsigned int i;
+	unsigned int inv = 0;
+
+#ifdef MLX5_PMD_SOFT_COUNTERS
+	const vector unsigned char ones = vec_splat_u8(-1);
+	uint32_t rcvd_byte = 0;
+	/* Mask to shuffle byte_cnt to add up stats. Do bswap16 for all. */
+	const vector unsigned char len_shuf_mask = (vector unsigned char){
+		 3,  2, 11, 10,
+		 7,  6, 15, 14,
+		-1, -1, -1, -1,
+		-1, -1, -1, -1};
+#endif
+
+	/*
+	 * A. load mCQEs into a 128bit register.
+	 * B. store rearm data to mbuf.
+	 * C. combine data from mCQEs with rx_descriptor_fields1.
+	 * D. store rx_descriptor_fields1.
+	 * E. store flow tag (rte_flow mark).
+	 */
+	for (pos = 0; pos < mcqe_n; ) {
+		vector unsigned char mcqe1, mcqe2;
+		vector unsigned char rxdf1, rxdf2;
+#ifdef MLX5_PMD_SOFT_COUNTERS
+		const vector unsigned short mcqe_sel_mask =
+			(vector unsigned short){0, 0, 0xffff, 0xffff,
+			0, 0, 0xfff, 0xffff};
+		const vector unsigned char lower_half = {
+			0, 1, 4, 5, 8, 9, 12, 13, 16,
+			17, 20, 21, 24, 25, 28, 29};
+		const vector unsigned char upper_half = {
+			2, 3, 6, 7, 10, 11, 14, 15,
+			18, 19, 22, 23, 26, 27, 30, 31};
+		vector unsigned short left, right;
+		vector unsigned char byte_cnt, invalid_mask;
+		vector unsigned long lshift;
+		__attribute__((altivec(vector__)))
+			__attribute__((altivec(bool__)))
+			unsigned long long shmask;
+		const vector unsigned long shmax = {64, 64};
+#endif
+
+		if (!(pos & 0x7) && pos + 8 < mcqe_n)
+			rte_prefetch0((void *)(cq + pos + 8));
+
+		/* A.1 load mCQEs into a 128bit register. */
+		mcqe1 = (vector unsigned char)vec_vsx_ld(0,
+			(signed int const *)&mcq[pos % 8]);
+		mcqe2 = (vector unsigned char)vec_vsx_ld(0,
+			(signed int const *)&mcq[pos % 8 + 2]);
+
+		/* B.1 store rearm data to mbuf. */
+		*(vector unsigned char *)
+			&elts[pos]->rearm_data = rearm;
+		*(vector unsigned char *)
+			&elts[pos + 1]->rearm_data = rearm;
+
+		/* C.1 combine data from mCQEs with rx_descriptor_fields1. */
+		rxdf1 = vec_perm(mcqe1, zero, shuf_mask1);
+		rxdf2 = vec_perm(mcqe1, zero, shuf_mask2);
+		rxdf1 = (vector unsigned char)
+			((vector unsigned short)rxdf1 -
+			(vector unsigned short)crc_adj);
+		rxdf2 = (vector unsigned char)
+			((vector unsigned short)rxdf2 -
+			(vector unsigned short)crc_adj);
+		rxdf1 = (vector unsigned char)
+			vec_sel((vector unsigned short)rxdf1,
+			(vector unsigned short)rxdf, rxdf_sel_mask);
+		rxdf2 = (vector unsigned char)
+			vec_sel((vector unsigned short)rxdf2,
+			(vector unsigned short)rxdf, rxdf_sel_mask);
+
+		/* D.1 store rx_descriptor_fields1. */
+		*(vector unsigned char *)
+			&elts[pos]->rx_descriptor_fields1 = rxdf1;
+		*(vector unsigned char *)
+			&elts[pos + 1]->rx_descriptor_fields1 = rxdf2;
+
+		/* B.1 store rearm data to mbuf. */
+		*(vector unsigned char *)
+			&elts[pos + 2]->rearm_data = rearm;
+		*(vector unsigned char *)
+			&elts[pos + 3]->rearm_data = rearm;
+
+		/* C.1 combine data from mCQEs with rx_descriptor_fields1. */
+		rxdf1 = vec_perm(mcqe2, zero, shuf_mask1);
+		rxdf2 = vec_perm(mcqe2, zero, shuf_mask2);
+		rxdf1 = (vector unsigned char)
+			((vector unsigned short)rxdf1 -
+			(vector unsigned short)crc_adj);
+		rxdf2 = (vector unsigned char)
+			((vector unsigned short)rxdf2 -
+			(vector unsigned short)crc_adj);
+		rxdf1 = (vector unsigned char)
+			vec_sel((vector unsigned short)rxdf1,
+			(vector unsigned short)rxdf, rxdf_sel_mask);
+		rxdf2 = (vector unsigned char)
+			vec_sel((vector unsigned short)rxdf2,
+			(vector unsigned short)rxdf, rxdf_sel_mask);
+
+		/* D.1 store rx_descriptor_fields1. */
+		*(vector unsigned char *)
+			&elts[pos + 2]->rx_descriptor_fields1 = rxdf1;
+		*(vector unsigned char *)
+			&elts[pos + 3]->rx_descriptor_fields1 = rxdf2;
+
+#ifdef MLX5_PMD_SOFT_COUNTERS
+		invalid_mask = (vector unsigned char)(vector unsigned long){
+			(mcqe_n - pos) * sizeof(uint16_t) * 8, 0};
+
+		lshift =
+			vec_splat((vector unsigned long)invalid_mask, 0);
+		shmask = vec_cmpgt(shmax, lshift);
+		invalid_mask = (vector unsigned char)
+			vec_sl((vector unsigned long)ones, lshift);
+		invalid_mask = (vector unsigned char)
+			vec_sel((vector unsigned long)shmask,
+			(vector unsigned long)invalid_mask, shmask);
+
+		mcqe1 = (vector unsigned char)
+			vec_sro((vector unsigned short)mcqe1,
+			(vector unsigned char){32}),
+		byte_cnt = (vector unsigned char)
+			vec_sel((vector unsigned short)mcqe1,
+			(vector unsigned short)mcqe2, mcqe_sel_mask);
+		byte_cnt = vec_perm(byte_cnt, zero, len_shuf_mask);
+		byte_cnt = (vector unsigned char)
+			vec_andc((vector unsigned long)byte_cnt,
+			(vector unsigned long)invalid_mask);
+		left = vec_perm((vector unsigned short)byte_cnt,
+			(vector unsigned short)zero, lower_half);
+		right = vec_perm((vector unsigned short)byte_cnt,
+			(vector unsigned short)zero, upper_half);
+		byte_cnt = (vector unsigned char)vec_add(left, right);
+		left = vec_perm((vector unsigned short)byte_cnt,
+			(vector unsigned short)zero, lower_half);
+		right = vec_perm((vector unsigned short)byte_cnt,
+			(vector unsigned short)zero, upper_half);
+		byte_cnt = (vector unsigned char)vec_add(left, right);
+		rcvd_byte += ((vector unsigned long)byte_cnt)[0];
+#endif
+
+		if (rxq->mark) {
+			/* E.1 store flow tag (rte_flow mark). */
+			elts[pos]->hash.fdir.hi = flow_tag;
+			elts[pos + 1]->hash.fdir.hi = flow_tag;
+			elts[pos + 2]->hash.fdir.hi = flow_tag;
+			elts[pos + 3]->hash.fdir.hi = flow_tag;
+		}
+
+		pos += MLX5_VPMD_DESCS_PER_LOOP;
+		/* Move to next CQE and invalidate consumed CQEs. */
+		if (!(pos & 0x7) && pos < mcqe_n) {
+			mcq = (void *)&(cq + pos)->pkt_info;
+			for (i = 0; i < 8; ++i)
+				cq[inv++].op_own = MLX5_CQE_INVALIDATE;
+		}
+	}
+
+	/* Invalidate the rest of CQEs. */
+	for (; inv < mcqe_n; ++inv)
+		cq[inv].op_own = MLX5_CQE_INVALIDATE;
+
+#ifdef MLX5_PMD_SOFT_COUNTERS
+	rxq->stats.ipackets += mcqe_n;
+	rxq->stats.ibytes += rcvd_byte;
+#endif
+
+	rxq->cq_ci += mcqe_n;
+	return mcqe_n;
+}
+
+/**
+ * Calculate packet type and offload flag for mbuf and store it.
+ *
+ * @param rxq
+ *   Pointer to RX queue structure.
+ * @param cqes[4]
+ *   Array of four 16bytes completions extracted from the original completion
+ *   descriptor.
+ * @param op_err
+ *   Opcode vector having responder error status. Each field is 4B.
+ * @param pkts
+ *   Pointer to array of packets to be filled.
+ */
+static inline void
+rxq_cq_to_ptype_oflags_v(struct mlx5_rxq_data *rxq,
+		vector unsigned char cqes[4], vector unsigned char op_err,
+		struct rte_mbuf **pkts)
+{
+	vector unsigned char pinfo0, pinfo1;
+	vector unsigned char pinfo, ptype;
+	vector unsigned char ol_flags = (vector unsigned char)
+		(vector unsigned int){
+			rxq->rss_hash * PKT_RX_RSS_HASH |
+				rxq->hw_timestamp * PKT_RX_TIMESTAMP,
+			rxq->rss_hash * PKT_RX_RSS_HASH |
+				rxq->hw_timestamp * PKT_RX_TIMESTAMP,
+			rxq->rss_hash * PKT_RX_RSS_HASH |
+				rxq->hw_timestamp * PKT_RX_TIMESTAMP,
+			rxq->rss_hash * PKT_RX_RSS_HASH |
+				rxq->hw_timestamp * PKT_RX_TIMESTAMP};
+	vector unsigned char cv_flags;
+	const vector unsigned char zero = (vector unsigned char){0};
+	const vector unsigned char ptype_mask =
+		(vector unsigned char)(vector unsigned int){
+		0x0000fd06, 0x0000fd06, 0x0000fd06, 0x0000fd06};
+	const vector unsigned char ptype_ol_mask =
+		(vector unsigned char)(vector unsigned int){
+		0x00000106, 0x00000106, 0x00000106, 0x00000106};
+	const vector unsigned char pinfo_mask =
+		(vector unsigned char)(vector unsigned int){
+		0x00000003, 0x00000003, 0x00000003, 0x00000003};
+	const vector unsigned char cv_flag_sel = (vector unsigned char){
+		0, (uint8_t)(PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED),
+		(uint8_t)(PKT_RX_IP_CKSUM_GOOD >> 1), 0,
+		(uint8_t)(PKT_RX_L4_CKSUM_GOOD >> 1), 0,
+		(uint8_t)((PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD) >> 1),
+		0, 0, 0, 0, 0, 0, 0, 0, 0};
+	const vector unsigned char cv_mask =
+		(vector unsigned char)(vector unsigned int){
+		PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD |
+		PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
+		PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD |
+		PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
+		PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD |
+		PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
+		PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD |
+		PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED};
+	const vector unsigned char mbuf_init =
+		(vector unsigned char)(vector unsigned long){
+		*(__attribute__((__aligned__(8))) unsigned long *)
+		&rxq->mbuf_initializer, 0LL};
+	const vector unsigned short rearm_sel_mask =
+		(vector unsigned short){0, 0, 0, 0, 0xffff, 0xffff, 0, 0};
+	vector unsigned char rearm0, rearm1, rearm2, rearm3;
+	uint8_t pt_idx0, pt_idx1, pt_idx2, pt_idx3;
+
+	/* Extract pkt_info field. */
+	pinfo0 = (vector unsigned char)
+		vec_mergeh((vector unsigned int)cqes[0],
+		(vector unsigned int)cqes[1]);
+	pinfo1 = (vector unsigned char)
+		vec_mergeh((vector unsigned int)cqes[2],
+		(vector unsigned int)cqes[3]);
+	pinfo = (vector unsigned char)
+		vec_mergeh((vector unsigned long)pinfo0,
+		(vector unsigned long)pinfo1);
+
+	/* Extract hdr_type_etc field. */
+	pinfo0 = (vector unsigned char)
+		vec_mergel((vector unsigned int)cqes[0],
+		(vector unsigned int)cqes[1]);
+	pinfo1 = (vector unsigned char)
+		vec_mergel((vector unsigned int)cqes[2],
+		(vector unsigned int)cqes[3]);
+	ptype = (vector unsigned char)
+		vec_mergeh((vector unsigned long)pinfo0,
+		(vector unsigned long)pinfo1);
+
+	if (rxq->mark) {
+		const vector unsigned char pinfo_ft_mask =
+			(vector unsigned char)(vector unsigned int){
+			0xffffff00, 0xffffff00, 0xffffff00, 0xffffff00};
+		const vector unsigned char fdir_flags =
+			(vector unsigned char)(vector unsigned int){
+			PKT_RX_FDIR, PKT_RX_FDIR,
+			PKT_RX_FDIR, PKT_RX_FDIR};
+		vector unsigned char fdir_id_flags =
+			(vector unsigned char)(vector unsigned int){
+			PKT_RX_FDIR_ID, PKT_RX_FDIR_ID,
+			PKT_RX_FDIR_ID, PKT_RX_FDIR_ID};
+		vector unsigned char flow_tag, invalid_mask;
+
+		flow_tag = (vector unsigned char)
+			vec_and((vector unsigned long)pinfo,
+			(vector unsigned long)pinfo_ft_mask);
+
+		/* Check if flow tag is non-zero then set PKT_RX_FDIR. */
+		invalid_mask = (vector unsigned char)
+			vec_cmpeq((vector unsigned int)flow_tag,
+			(vector unsigned int)zero);
+		ol_flags = (vector unsigned char)
+			vec_or((vector unsigned long)ol_flags,
+			(vector unsigned long)
+			vec_andc((vector unsigned long)fdir_flags,
+			(vector unsigned long)invalid_mask));
+
+		/* Mask out invalid entries. */
+		fdir_id_flags = (vector unsigned char)
+			vec_andc((vector unsigned long)fdir_id_flags,
+			(vector unsigned long)invalid_mask);
+
+		/* Check if flow tag MLX5_FLOW_MARK_DEFAULT. */
+		ol_flags = (vector unsigned char)
+			vec_or((vector unsigned long)ol_flags,
+			(vector unsigned long)
+			vec_andc((vector unsigned long)fdir_id_flags,
+			(vector unsigned long)
+			vec_cmpeq((vector unsigned int)flow_tag,
+			(vector unsigned int)pinfo_ft_mask)));
+	}
+
+	/*
+	 * Merge the two fields to generate the following:
+	 * bit[1]     = l3_ok
+	 * bit[2]     = l4_ok
+	 * bit[8]     = cv
+	 * bit[11:10] = l3_hdr_type
+	 * bit[14:12] = l4_hdr_type
+	 * bit[15]    = ip_frag
+	 * bit[16]    = tunneled
+	 * bit[17]    = outer_l3_type
+	 */
+	ptype = (vector unsigned char)
+		vec_and((vector unsigned long)ptype,
+		(vector unsigned long)ptype_mask);
+	pinfo = (vector unsigned char)
+		vec_and((vector unsigned long)pinfo,
+		(vector unsigned long)pinfo_mask);
+	pinfo = (vector unsigned char)
+		vec_sl((vector unsigned int)pinfo,
+		(vector unsigned int){16, 16, 16, 16});
+
+	/* Make pinfo has merged fields for ol_flags calculation. */
+	pinfo = (vector unsigned char)
+		vec_or((vector unsigned long)ptype,
+		(vector unsigned long)pinfo);
+	ptype = (vector unsigned char)
+		vec_sr((vector unsigned int)pinfo,
+		(vector unsigned int){10, 10, 10, 10});
+	ptype = (vector unsigned char)
+		vec_packs((vector unsigned int)ptype,
+		(vector unsigned int)zero);
+
+	/* Errored packets will have RTE_PTYPE_ALL_MASK. */
+	op_err = (vector unsigned char)
+		vec_sr((vector unsigned short)op_err,
+		(vector unsigned short){8, 8, 8, 8, 8, 8, 8, 8});
+	ptype = (vector unsigned char)
+		vec_or((vector unsigned long)ptype,
+		(vector unsigned long)op_err);
+
+	pt_idx0 = (uint8_t)((vector unsigned char)ptype)[0];
+	pt_idx1 = (uint8_t)((vector unsigned char)ptype)[2];
+	pt_idx2 = (uint8_t)((vector unsigned char)ptype)[4];
+	pt_idx3 = (uint8_t)((vector unsigned char)ptype)[6];
+
+	pkts[0]->packet_type = mlx5_ptype_table[pt_idx0] |
+		!!(pt_idx0 & (1 << 6)) * rxq->tunnel;
+	pkts[1]->packet_type = mlx5_ptype_table[pt_idx1] |
+		!!(pt_idx1 & (1 << 6)) * rxq->tunnel;
+	pkts[2]->packet_type = mlx5_ptype_table[pt_idx2] |
+		!!(pt_idx2 & (1 << 6)) * rxq->tunnel;
+	pkts[3]->packet_type = mlx5_ptype_table[pt_idx3] |
+		!!(pt_idx3 & (1 << 6)) * rxq->tunnel;
+
+	/* Fill flags for checksum and VLAN. */
+	pinfo = (vector unsigned char)
+		vec_and((vector unsigned long)pinfo,
+		(vector unsigned long)ptype_ol_mask);
+	pinfo = vec_perm(cv_flag_sel, zero, pinfo);
+
+	/* Locate checksum flags at byte[2:1] and merge with VLAN flags. */
+	cv_flags = (vector unsigned char)
+		vec_sl((vector unsigned int)pinfo,
+		(vector unsigned int){9, 9, 9, 9});
+	cv_flags = (vector unsigned char)
+		vec_or((vector unsigned long)pinfo,
+		(vector unsigned long)cv_flags);
+
+	/* Move back flags to start from byte[0]. */
+	cv_flags = (vector unsigned char)
+		vec_sr((vector unsigned int)cv_flags,
+		(vector unsigned int){8, 8, 8, 8});
+
+	/* Mask out garbage bits. */
+	cv_flags = (vector unsigned char)
+		vec_and((vector unsigned long)cv_flags,
+		(vector unsigned long)cv_mask);
+
+	/* Merge to ol_flags. */
+	ol_flags = (vector unsigned char)
+		vec_or((vector unsigned long)ol_flags,
+		(vector unsigned long)cv_flags);
+
+	/* Merge mbuf_init and ol_flags. */
+	rearm0 = (vector unsigned char)
+		vec_sel((vector unsigned short)mbuf_init,
+		(vector unsigned short)
+		vec_slo((vector unsigned short)ol_flags,
+		(vector unsigned char){64}), rearm_sel_mask);
+	rearm1 = (vector unsigned char)
+		vec_sel((vector unsigned short)mbuf_init,
+		(vector unsigned short)
+		vec_slo((vector unsigned short)ol_flags,
+		(vector unsigned char){32}), rearm_sel_mask);
+	rearm2 = (vector unsigned char)
+		vec_sel((vector unsigned short)mbuf_init,
+		(vector unsigned short)ol_flags, rearm_sel_mask);
+	rearm3 = (vector unsigned char)
+		vec_sel((vector unsigned short)mbuf_init,
+		(vector unsigned short)
+		vec_sro((vector unsigned short)ol_flags,
+		(vector unsigned char){32}), rearm_sel_mask);
+
+	/* Write 8B rearm_data and 8B ol_flags. */
+	vec_vsx_st(rearm0, 0,
+		(vector unsigned char *)&pkts[0]->rearm_data);
+	vec_vsx_st(rearm1, 0,
+		(vector unsigned char *)&pkts[1]->rearm_data);
+	vec_vsx_st(rearm2, 0,
+		(vector unsigned char *)&pkts[2]->rearm_data);
+	vec_vsx_st(rearm3, 0,
+		(vector unsigned char *)&pkts[3]->rearm_data);
+}
+
+
+/**
+ * Receive burst of packets. An errored completion also consumes a mbuf, but the
+ * packet_type is set to be RTE_PTYPE_ALL_MASK. Marked mbufs should be freed
+ * before returning to application.
+ *
+ * @param rxq
+ *   Pointer to RX queue structure.
+ * @param[out] pkts
+ *   Array to store received packets.
+ * @param pkts_n
+ *   Maximum number of packets in array.
+ * @param[out] err
+ *   Pointer to a flag. Set non-zero value if pkts array has at least one error
+ *   packet to handle.
+ *
+ * @return
+ *   Number of packets received including errors (<= pkts_n).
+ */
+static inline uint16_t
+rxq_burst_v(struct mlx5_rxq_data *rxq, struct rte_mbuf **pkts, uint16_t pkts_n,
+	    uint64_t *err)
+{
+	const uint16_t q_n = 1 << rxq->cqe_n;
+	const uint16_t q_mask = q_n - 1;
+	volatile struct mlx5_cqe *cq;
+	struct rte_mbuf **elts;
+	unsigned int pos;
+	uint64_t n;
+	uint16_t repl_n;
+	uint64_t comp_idx = MLX5_VPMD_DESCS_PER_LOOP;
+	uint16_t nocmp_n = 0;
+	uint16_t rcvd_pkt = 0;
+	unsigned int cq_idx = rxq->cq_ci & q_mask;
+	unsigned int elts_idx;
+	unsigned int ownership = !!(rxq->cq_ci & (q_mask + 1));
+	const vector unsigned char zero = (vector unsigned char){0};
+	const vector unsigned char ones = vec_splat_u8(-1);
+	const vector unsigned char owner_check =
+		(vector unsigned char)(vector unsigned long){
+		0x0100000001000000LL, 0x0100000001000000LL};
+	const vector unsigned char opcode_check =
+		(vector unsigned char)(vector unsigned long){
+		0xf0000000f0000000LL, 0xf0000000f0000000LL};
+	const vector unsigned char format_check =
+		(vector unsigned char)(vector unsigned long){
+		0x0c0000000c000000LL, 0x0c0000000c000000LL};
+	const vector unsigned char resp_err_check =
+		(vector unsigned char)(vector unsigned long){
+		0xe0000000e0000000LL, 0xe0000000e0000000LL};
+#ifdef MLX5_PMD_SOFT_COUNTERS
+	uint32_t rcvd_byte = 0;
+	/* Mask to shuffle byte_cnt to add up stats. Do bswap16 for all. */
+	const vector unsigned char len_shuf_mask = (vector unsigned char){
+		 1,  0,  5,  4,
+		 9,  8, 13, 12,
+		-1, -1, -1, -1,
+		-1, -1, -1, -1};
+#endif
+	/* Mask to shuffle from extracted CQE to mbuf. */
+	const vector unsigned char shuf_mask = (vector unsigned char){
+		 5,  4,           /* bswap16, pkt_len */
+		-1, -1,           /* zero out 2nd half of pkt_len */
+		 5,  4,           /* bswap16, data_len */
+		11, 10,           /* bswap16, vlan+tci */
+		15, 14, 13, 12,   /* bswap32, rss */
+		 1,  2,  3, -1};  /* fdir.hi */
+	/* Mask to blend from the last Qword to the first DQword. */
+	/* Mask to blend from the last Qword to the first DQword. */
+	const vector unsigned char blend_mask = (vector unsigned char){
+		-1,  0,  0,  0,
+		 0,  0,  0,  0,
+		-1, -1, -1, -1,
+		-1, -1, -1, -1};
+	const vector unsigned char crc_adj =
+		(vector unsigned char)(vector unsigned short){
+		rxq->crc_present * RTE_ETHER_CRC_LEN, 0,
+		rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 0, 0, 0, 0};
+	const vector unsigned char flow_mark_adj =
+		(vector unsigned char)(vector unsigned int){
+		0, 0, 0, rxq->mark * (-1)};
+	const vector unsigned short cqe_sel_mask1 =
+		(vector unsigned short){0, 0, 0, 0, 0xffff, 0xffff, 0, 0};
+	const vector unsigned short cqe_sel_mask2 =
+		(vector unsigned short){0, 0, 0xffff, 0, 0, 0, 0, 0};
+
+	assert(rxq->sges_n == 0);
+	assert(rxq->cqe_n == rxq->elts_n);
+	cq = &(*rxq->cqes)[cq_idx];
+	rte_prefetch0(cq);
+	rte_prefetch0(cq + 1);
+	rte_prefetch0(cq + 2);
+	rte_prefetch0(cq + 3);
+	pkts_n = RTE_MIN(pkts_n, MLX5_VPMD_RX_MAX_BURST);
+
+	repl_n = q_n - (rxq->rq_ci - rxq->rq_pi);
+	if (repl_n >= rxq->rq_repl_thresh)
+		mlx5_rx_replenish_bulk_mbuf(rxq, repl_n);
+	/* See if there're unreturned mbufs from compressed CQE. */
+	rcvd_pkt = rxq->decompressed;
+	if (rcvd_pkt > 0) {
+		rcvd_pkt = RTE_MIN(rcvd_pkt, pkts_n);
+		rxq_copy_mbuf_v(rxq, pkts, rcvd_pkt);
+		rxq->rq_pi += rcvd_pkt;
+		rxq->decompressed -= rcvd_pkt;
+		pkts += rcvd_pkt;
+	}
+	elts_idx = rxq->rq_pi & q_mask;
+	elts = &(*rxq->elts)[elts_idx];
+	/* Not to overflow pkts array. */
+	pkts_n = RTE_ALIGN_FLOOR(pkts_n - rcvd_pkt, MLX5_VPMD_DESCS_PER_LOOP);
+	/* Not to cross queue end. */
+	pkts_n = RTE_MIN(pkts_n, q_n - elts_idx);
+	pkts_n = RTE_MIN(pkts_n, q_n - cq_idx);
+	if (!pkts_n)
+		return rcvd_pkt;
+	/* At this point, there shouldn't be any remaining packets. */
+	assert(rxq->decompressed == 0);
+
+	/*
+	 * A. load first Qword (8bytes) in one loop.
+	 * B. copy 4 mbuf pointers from elts ring to returing pkts.
+	 * C. load remaining CQE data and extract necessary fields.
+	 *    Final 16bytes cqes[] extracted from original 64bytes CQE has the
+	 *    following structure:
+	 *        struct {
+	 *          uint8_t  pkt_info;
+	 *          uint8_t  flow_tag[3];
+	 *          uint16_t byte_cnt;
+	 *          uint8_t  rsvd4;
+	 *          uint8_t  op_own;
+	 *          uint16_t hdr_type_etc;
+	 *          uint16_t vlan_info;
+	 *          uint32_t rx_has_res;
+	 *        } c;
+	 * D. fill in mbuf.
+	 * E. get valid CQEs.
+	 * F. find compressed CQE.
+	 */
+	for (pos = 0;
+	     pos < pkts_n;
+	     pos += MLX5_VPMD_DESCS_PER_LOOP) {
+		vector unsigned char cqes[MLX5_VPMD_DESCS_PER_LOOP];
+		vector unsigned char cqe_tmp1, cqe_tmp2;
+		vector unsigned char pkt_mb0, pkt_mb1, pkt_mb2, pkt_mb3;
+		vector unsigned char op_own, op_own_tmp1, op_own_tmp2;
+		vector unsigned char opcode, owner_mask, invalid_mask;
+		vector unsigned char comp_mask;
+		vector unsigned char mask;
+#ifdef MLX5_PMD_SOFT_COUNTERS
+		const vector unsigned char lower_half = {
+			0, 1, 4, 5, 8, 9, 12, 13,
+			16, 17, 20, 21, 24, 25, 28, 29};
+		const vector unsigned char upper_half = {
+			2, 3, 6, 7, 10, 11, 14, 15,
+			18, 19, 22, 23, 26, 27, 30, 31};
+		const vector unsigned long shmax = {64, 64};
+		vector unsigned char byte_cnt;
+		vector unsigned short left, right;
+		vector unsigned long lshift;
+		vector __attribute__((altivec(bool__)))
+			unsigned long shmask;
+#endif
+		vector unsigned char mbp1, mbp2;
+		vector unsigned char p =
+			(vector unsigned char)(vector unsigned short){
+				0, 1, 2, 3, 0, 0, 0, 0};
+		unsigned int p1, p2, p3;
+
+		/* Prefetch next 4 CQEs. */
+		if (pkts_n - pos >= 2 * MLX5_VPMD_DESCS_PER_LOOP) {
+			rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP]);
+			rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 1]);
+			rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 2]);
+			rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 3]);
+		}
+
+		/* A.0 do not cross the end of CQ. */
+		mask = (vector unsigned char)(vector unsigned long){
+			(pkts_n - pos) * sizeof(uint16_t) * 8, 0};
+
+		{
+			vector unsigned long lshift;
+			vector __attribute__((altivec(bool__)))
+				unsigned long shmask;
+			const vector unsigned long shmax = {64, 64};
+
+			lshift = vec_splat((vector unsigned long)mask, 0);
+			shmask = vec_cmpgt(shmax, lshift);
+			mask = (vector unsigned char)
+				vec_sl((vector unsigned long)ones, lshift);
+			mask = (vector unsigned char)
+				vec_sel((vector unsigned long)shmask,
+				(vector unsigned long)mask, shmask);
+		}
+
+		p = (vector unsigned char)
+			vec_andc((vector unsigned long)p,
+			(vector unsigned long)mask);
+
+		/* A.1 load cqes. */
+		p3 = (unsigned int)((vector unsigned short)p)[3];
+		cqes[3] = (vector unsigned char)(vector unsigned long){
+			*(__attribute__((__aligned__(8))) unsigned long *)
+			&cq[pos + p3].sop_drop_qpn, 0LL};
+		rte_compiler_barrier();
+
+		p2 = (unsigned int)((vector unsigned short)p)[2];
+		cqes[2] = (vector unsigned char)(vector unsigned long){
+			*(__attribute__((__aligned__(8))) unsigned long *)
+			&cq[pos + p2].sop_drop_qpn, 0LL};
+		rte_compiler_barrier();
+
+		/* B.1 load mbuf pointers. */
+		mbp1 = (vector unsigned char)vec_vsx_ld(0,
+			(signed int const *)&elts[pos]);
+		mbp2 = (vector unsigned char)vec_vsx_ld(0,
+			(signed int const *)&elts[pos + 2]);
+
+		/* A.1 load a block having op_own. */
+		p1 = (unsigned int)((vector unsigned short)p)[1];
+		cqes[1] = (vector unsigned char)(vector unsigned long){
+			*(__attribute__((__aligned__(8))) unsigned long *)
+			&cq[pos + p1].sop_drop_qpn, 0LL};
+		rte_compiler_barrier();
+
+		cqes[0] = (vector unsigned char)(vector unsigned long){
+			*(__attribute__((__aligned__(8))) unsigned long *)
+			&cq[pos].sop_drop_qpn, 0LL};
+		rte_compiler_barrier();
+
+		/* B.2 copy mbuf pointers. */
+		*(vector unsigned char *)&pkts[pos] = mbp1;
+		*(vector unsigned char *)&pkts[pos + 2] = mbp2;
+		rte_cio_rmb();
+
+		/* C.1 load remaining CQE data and extract necessary fields. */
+		cqe_tmp2 = *(vector unsigned char *)
+			&cq[pos + p3].pkt_info;
+		cqe_tmp1 = *(vector unsigned char *)
+			&cq[pos + p2].pkt_info;
+		cqes[3] = vec_sel(cqes[3], cqe_tmp2, blend_mask);
+		cqes[2] = vec_sel(cqes[2], cqe_tmp1, blend_mask);
+		cqe_tmp2 = (vector unsigned char)vec_vsx_ld(0,
+			(signed int const *)&cq[pos + p3].csum);
+		cqe_tmp1 = (vector unsigned char)vec_vsx_ld(0,
+			(signed int const *)&cq[pos + p2].csum);
+		cqes[3] = (vector unsigned char)
+			vec_sel((vector unsigned short)cqes[3],
+			(vector unsigned short)cqe_tmp2, cqe_sel_mask1);
+		cqes[2] = (vector unsigned char)
+			vec_sel((vector unsigned short)cqes[2],
+			(vector unsigned short)cqe_tmp1, cqe_sel_mask1);
+		cqe_tmp2 = (vector unsigned char)(vector unsigned long){
+			*(__attribute__((__aligned__(8))) unsigned long *)
+			&cq[pos + p3].rsvd3[9], 0LL};
+		cqe_tmp1 = (vector unsigned char)(vector unsigned long){
+			*(__attribute__((__aligned__(8))) unsigned long *)
+			&cq[pos + p2].rsvd3[9], 0LL};
+		cqes[3] = (vector unsigned char)
+			vec_sel((vector unsigned short)cqes[3],
+			(vector unsigned short)cqe_tmp2,
+			(vector unsigned short)cqe_sel_mask2);
+		cqes[2] = (vector unsigned char)
+			vec_sel((vector unsigned short)cqes[2],
+			(vector unsigned short)cqe_tmp1,
+			(vector unsigned short)cqe_sel_mask2);
+
+		/* C.2 generate final structure for mbuf with swapping bytes. */
+		pkt_mb3 = vec_perm(cqes[3], zero, shuf_mask);
+		pkt_mb2 = vec_perm(cqes[2], zero, shuf_mask);
+
+		/* C.3 adjust CRC length. */
+		pkt_mb3 = (vector unsigned char)
+			((vector unsigned short)pkt_mb3 -
+			(vector unsigned short)crc_adj);
+		pkt_mb2 = (vector unsigned char)
+			((vector unsigned short)pkt_mb2 -
+			(vector unsigned short)crc_adj);
+
+		/* C.4 adjust flow mark. */
+		pkt_mb3 = (vector unsigned char)
+			((vector unsigned int)pkt_mb3 +
+			(vector unsigned int)flow_mark_adj);
+		pkt_mb2 = (vector unsigned char)
+			((vector unsigned int)pkt_mb2 +
+			(vector unsigned int)flow_mark_adj);
+
+		/* D.1 fill in mbuf - rx_descriptor_fields1. */
+		*(vector unsigned char *)
+			&pkts[pos + 3]->pkt_len = pkt_mb3;
+		*(vector unsigned char *)
+			&pkts[pos + 2]->pkt_len = pkt_mb2;
+
+		/* E.1 extract op_own field. */
+		op_own_tmp2 = (vector unsigned char)
+			vec_mergeh((vector unsigned int)cqes[2],
+			(vector unsigned int)cqes[3]);
+
+		/* C.1 load remaining CQE data and extract necessary fields. */
+		cqe_tmp2 = *(vector unsigned char *)
+			&cq[pos + p1].pkt_info;
+		cqe_tmp1 = *(vector unsigned char *)
+			&cq[pos].pkt_info;
+		cqes[1] = vec_sel(cqes[1], cqe_tmp2, blend_mask);
+		cqes[0] = vec_sel(cqes[0], cqe_tmp2, blend_mask);
+		cqe_tmp2 = (vector unsigned char)vec_vsx_ld(0,
+			(signed int const *)&cq[pos + p1].csum);
+		cqe_tmp1 = (vector unsigned char)vec_vsx_ld(0,
+			(signed int const *)&cq[pos].csum);
+		cqes[1] = (vector unsigned char)
+			vec_sel((vector unsigned short)cqes[1],
+			(vector unsigned short)cqe_tmp2, cqe_sel_mask1);
+		cqes[0] = (vector unsigned char)
+			vec_sel((vector unsigned short)cqes[0],
+			(vector unsigned short)cqe_tmp1, cqe_sel_mask1);
+		cqe_tmp2 = (vector unsigned char)(vector unsigned long){
+			*(__attribute__((__aligned__(8))) unsigned long *)
+			&cq[pos + p1].rsvd3[9], 0LL};
+		cqe_tmp1 = (vector unsigned char)(vector unsigned long){
+			*(__attribute__((__aligned__(8))) unsigned long *)
+			&cq[pos].rsvd3[9], 0LL};
+		cqes[1] = (vector unsigned char)
+			vec_sel((vector unsigned short)cqes[1],
+			(vector unsigned short)cqe_tmp2, cqe_sel_mask2);
+		cqes[0] = (vector unsigned char)
+			vec_sel((vector unsigned short)cqes[0],
+			(vector unsigned short)cqe_tmp1, cqe_sel_mask2);
+
+		/* C.2 generate final structure for mbuf with swapping bytes. */
+		pkt_mb1 = vec_perm(cqes[1], zero, shuf_mask);
+		pkt_mb0 = vec_perm(cqes[0], zero, shuf_mask);
+
+		/* C.3 adjust CRC length. */
+		pkt_mb1 = (vector unsigned char)
+			((vector unsigned short)pkt_mb1 -
+			(vector unsigned short)crc_adj);
+		pkt_mb0 = (vector unsigned char)
+			((vector unsigned short)pkt_mb0 -
+			(vector unsigned short)crc_adj);
+
+		/* C.4 adjust flow mark. */
+		pkt_mb1 = (vector unsigned char)
+			((vector unsigned int)pkt_mb1 +
+			(vector unsigned int)flow_mark_adj);
+		pkt_mb0 = (vector unsigned char)
+			((vector unsigned int)pkt_mb0 +
+			(vector unsigned int)flow_mark_adj);
+
+		/* E.1 extract op_own byte. */
+		op_own_tmp1 = (vector unsigned char)
+			vec_mergeh((vector unsigned int)cqes[0],
+			(vector unsigned int)cqes[1]);
+		op_own = (vector unsigned char)
+			vec_mergel((vector unsigned long)op_own_tmp1,
+			(vector unsigned long)op_own_tmp2);
+
+		/* D.1 fill in mbuf - rx_descriptor_fields1. */
+		*(vector unsigned char *)
+			&pkts[pos + 1]->pkt_len = pkt_mb1;
+		*(vector unsigned char *)
+			&pkts[pos]->pkt_len = pkt_mb0;
+
+		/* E.2 flip owner bit to mark CQEs from last round. */
+		owner_mask = (vector unsigned char)
+			vec_and((vector unsigned long)op_own,
+			(vector unsigned long)owner_check);
+		if (ownership)
+			owner_mask = (vector unsigned char)
+				vec_xor((vector unsigned long)owner_mask,
+				(vector unsigned long)owner_check);
+		owner_mask = (vector unsigned char)
+			vec_cmpeq((vector unsigned int)owner_mask,
+			(vector unsigned int)owner_check);
+		owner_mask = (vector unsigned char)
+			vec_packs((vector unsigned int)owner_mask,
+			(vector unsigned int)zero);
+
+		/* E.3 get mask for invalidated CQEs. */
+		opcode = (vector unsigned char)
+			vec_and((vector unsigned long)op_own,
+			(vector unsigned long)opcode_check);
+		invalid_mask = (vector unsigned char)
+			vec_cmpeq((vector unsigned int)opcode_check,
+			(vector unsigned int)opcode);
+		invalid_mask = (vector unsigned char)
+			vec_packs((vector unsigned int)invalid_mask,
+			(vector unsigned int)zero);
+
+		/* E.4 mask out beyond boundary. */
+		invalid_mask = (vector unsigned char)
+			vec_or((vector unsigned long)invalid_mask,
+			(vector unsigned long)mask);
+
+		/* E.5 merge invalid_mask with invalid owner. */
+		invalid_mask = (vector unsigned char)
+			vec_or((vector unsigned long)invalid_mask,
+			(vector unsigned long)owner_mask);
+
+		/* F.1 find compressed CQE format. */
+		comp_mask = (vector unsigned char)
+			vec_and((vector unsigned long)op_own,
+			(vector unsigned long)format_check);
+		comp_mask = (vector unsigned char)
+			vec_cmpeq((vector unsigned int)comp_mask,
+			(vector unsigned int)format_check);
+		comp_mask = (vector unsigned char)
+			vec_packs((vector unsigned int)comp_mask,
+			(vector unsigned int)zero);
+
+		/* F.2 mask out invalid entries. */
+		comp_mask = (vector unsigned char)
+			vec_andc((vector unsigned long)comp_mask,
+			(vector unsigned long)invalid_mask);
+		comp_idx = ((vector unsigned long)comp_mask)[0];
+
+		/* F.3 get the first compressed CQE. */
+		comp_idx = comp_idx ? __builtin_ctzll(comp_idx) /
+			(sizeof(uint16_t) * 8) : MLX5_VPMD_DESCS_PER_LOOP;
+
+		/* E.6 mask out entries after the compressed CQE. */
+		mask = (vector unsigned char)(vector unsigned long){
+			(comp_idx * sizeof(uint16_t) * 8), 0};
+		lshift = vec_splat((vector unsigned long)mask, 0);
+		shmask = vec_cmpgt(shmax, lshift);
+		mask = (vector unsigned char)
+			vec_sl((vector unsigned long)ones, lshift);
+		mask = (vector unsigned char)
+			vec_sel((vector unsigned long)shmask,
+			(vector unsigned long)mask, shmask);
+		invalid_mask = (vector unsigned char)
+			vec_or((vector unsigned long)invalid_mask,
+			(vector unsigned long)mask);
+
+		/* E.7 count non-compressed valid CQEs. */
+		n = ((vector unsigned long)invalid_mask)[0];
+		n = n ? __builtin_ctzll(n) / (sizeof(uint16_t) * 8) :
+			MLX5_VPMD_DESCS_PER_LOOP;
+		nocmp_n += n;
+
+		/* D.2 get the final invalid mask. */
+		mask = (vector unsigned char)(vector unsigned long){
+			(n * sizeof(uint16_t) * 8), 0};
+		lshift = vec_splat((vector unsigned long)mask, 0);
+		shmask = vec_cmpgt(shmax, lshift);
+		mask = (vector unsigned char)
+			vec_sl((vector unsigned long)ones, lshift);
+		mask = (vector unsigned char)
+			vec_sel((vector unsigned long)shmask,
+			(vector unsigned long)mask, shmask);
+		invalid_mask = (vector unsigned char)
+			vec_or((vector unsigned long)invalid_mask,
+			(vector unsigned long)mask);
+
+		/* D.3 check error in opcode. */
+		opcode = (vector unsigned char)
+			vec_cmpeq((vector unsigned int)resp_err_check,
+			(vector unsigned int)opcode);
+		opcode = (vector unsigned char)
+			vec_packs((vector unsigned int)opcode,
+			(vector unsigned int)zero);
+		opcode = (vector unsigned char)
+			vec_andc((vector unsigned long)opcode,
+			(vector unsigned long)invalid_mask);
+
+		/* D.4 mark if any error is set */
+		*err |= ((vector unsigned long)opcode)[0];
+
+		/* D.5 fill in mbuf - rearm_data and packet_type. */
+		rxq_cq_to_ptype_oflags_v(rxq, cqes, opcode, &pkts[pos]);
+		if (rxq->hw_timestamp) {
+			pkts[pos]->timestamp =
+				rte_be_to_cpu_64(cq[pos].timestamp);
+			pkts[pos + 1]->timestamp =
+				rte_be_to_cpu_64(cq[pos + p1].timestamp);
+			pkts[pos + 2]->timestamp =
+				rte_be_to_cpu_64(cq[pos + p2].timestamp);
+			pkts[pos + 3]->timestamp =
+				rte_be_to_cpu_64(cq[pos + p3].timestamp);
+		}
+
+#ifdef MLX5_PMD_SOFT_COUNTERS
+		/* Add up received bytes count. */
+		byte_cnt = vec_perm(op_own, zero, len_shuf_mask);
+		byte_cnt = (vector unsigned char)
+			vec_andc((vector unsigned long)byte_cnt,
+			(vector unsigned long)invalid_mask);
+		left = vec_perm((vector unsigned short)byte_cnt,
+			(vector unsigned short)zero, lower_half);
+		right = vec_perm((vector unsigned short)byte_cnt,
+			(vector unsigned short)zero, upper_half);
+		byte_cnt = (vector unsigned char)vec_add(left, right);
+		left = vec_perm((vector unsigned short)byte_cnt,
+			(vector unsigned short)zero, lower_half);
+		right = vec_perm((vector unsigned short)byte_cnt,
+			(vector unsigned short)zero, upper_half);
+		byte_cnt = (vector unsigned char)vec_add(left, right);
+		rcvd_byte += ((vector unsigned long)byte_cnt)[0];
+#endif
+
+		/*
+		 * Break the loop unless more valid CQE is expected, or if
+		 * there's a compressed CQE.
+		 */
+		if (n != MLX5_VPMD_DESCS_PER_LOOP)
+			break;
+	}
+	/* If no new CQE seen, return without updating cq_db. */
+	if (unlikely(!nocmp_n && comp_idx == MLX5_VPMD_DESCS_PER_LOOP))
+		return rcvd_pkt;
+	/* Update the consumer indexes for non-compressed CQEs. */
+	assert(nocmp_n <= pkts_n);
+	rxq->cq_ci += nocmp_n;
+	rxq->rq_pi += nocmp_n;
+	rcvd_pkt += nocmp_n;
+#ifdef MLX5_PMD_SOFT_COUNTERS
+	rxq->stats.ipackets += nocmp_n;
+	rxq->stats.ibytes += rcvd_byte;
+#endif
+	/* Decompress the last CQE if compressed. */
+	if (comp_idx < MLX5_VPMD_DESCS_PER_LOOP && comp_idx == n) {
+		assert(comp_idx == (nocmp_n % MLX5_VPMD_DESCS_PER_LOOP));
+		rxq->decompressed =
+			rxq_cq_decompress_v(rxq, &cq[nocmp_n], &elts[nocmp_n]);
+		/* Return more packets if needed. */
+		if (nocmp_n < pkts_n) {
+			uint16_t n = rxq->decompressed;
+
+			n = RTE_MIN(n, pkts_n - nocmp_n);
+			rxq_copy_mbuf_v(rxq, &pkts[nocmp_n], n);
+			rxq->rq_pi += n;
+			rcvd_pkt += n;
+			rxq->decompressed -= n;
+		}
+	}
+	rte_compiler_barrier();
+	*rxq->cq_db = rte_cpu_to_be_32(rxq->cq_ci);
+	return rcvd_pkt;
+}
+
+#endif /* RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_ */
-- 
1.8.3.1


^ permalink raw reply	[flat|nested] 4+ messages in thread
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2019-08-15 22:02 [dpdk-dev] [PATCH] net/mlx5: add support for vectorized code on Power systems David Christensen
2019-08-16 17:56 ` [dpdk-dev] [PATCH v2] " David Christensen
2019-10-23 14:32   ` Raslan Darawsheh
2019-10-23 14:35     ` Raslan Darawsheh

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