d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
9f151fd8df
numam-dpdk/drivers/net/mlx5/mlx5_rxtx_vec_altivec.h
Viacheslav Ovsiienko 25ed2ebff1 net/mlx5: support shared Rx queue port data path 
When receive packet, mlx5 PMD saves mbuf port number from
RxQ data.

To support shared RxQ, save port number into RQ context as user index.
Received packet resolve port number from CQE user index which derived
from RQ context.

Legacy Verbs API doesn't support RQ user index setting, still read from
RxQ port number.

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
2021-11-04 22:55:51 +01:00

1291 lines
44 KiB
C
Raw Blame History

/* 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 <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <rte_altivec.h>
#include <rte_mbuf.h>
#include <rte_mempool.h>
#include <rte_prefetch.h>
#include <mlx5_prm.h>
#include "mlx5_defs.h"
#include "mlx5.h"
#include "mlx5_utils.h"
#include "mlx5_rxtx.h"
#include "mlx5_rxtx_vec.h"
#include "mlx5_autoconf.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 elts
* Pointer to SW ring to be filled.
* @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 rte_mbuf **elts, struct rte_mbuf **pkts, uint16_t n)
{
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};
vector unsigned char ol_flags = (vector unsigned char){0};
vector unsigned char ol_flags_mask = (vector unsigned char){0};
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
for (i = 0; i < MLX5_VPMD_DESCS_PER_LOOP; ++i)
if (likely(pos + i < mcqe_n))
rte_prefetch0((void *)(cq + pos + i));
/* 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);
byte_cnt = (vector unsigned char)
vec_sel((vector unsigned short)
vec_sro((vector unsigned short)mcqe1,
(vector unsigned char){32}),
(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) {
if (rxq->mcqe_format !=
MLX5_CQE_RESP_FORMAT_FTAG_STRIDX) {
const uint32_t flow_tag = t_pkt->hash.fdir.hi;
/* 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;
} else {
const vector unsigned char flow_mark_adj =
(vector unsigned char)
(vector unsigned int){
-1, -1, -1, -1};
const vector unsigned char flow_mark_shuf =
(vector unsigned char){
-1, -1, -1, -1,
-1, -1, -1, -1,
12, 8, 9, -1,
4, 0, 1, -1};
const vector unsigned char ft_mask =
(vector unsigned char)
(vector unsigned int){
0xffffff00, 0xffffff00,
0xffffff00, 0xffffff00};
const vector unsigned char fdir_flags =
(vector unsigned char)
(vector unsigned int){
RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_FDIR,
RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_FDIR};
const vector unsigned char fdir_all_flags =
(vector unsigned char)
(vector unsigned int){
RTE_MBUF_F_RX_FDIR | RTE_MBUF_F_RX_FDIR_ID,
RTE_MBUF_F_RX_FDIR | RTE_MBUF_F_RX_FDIR_ID,
RTE_MBUF_F_RX_FDIR | RTE_MBUF_F_RX_FDIR_ID,
RTE_MBUF_F_RX_FDIR | RTE_MBUF_F_RX_FDIR_ID};
vector unsigned char fdir_id_flags =
(vector unsigned char)
(vector unsigned int){
RTE_MBUF_F_RX_FDIR_ID, RTE_MBUF_F_RX_FDIR_ID,
RTE_MBUF_F_RX_FDIR_ID, RTE_MBUF_F_RX_FDIR_ID};
/* Extract flow_tag field. */
vector unsigned char ftag0 = vec_perm(mcqe1,
zero, flow_mark_shuf);
vector unsigned char ftag1 = vec_perm(mcqe2,
zero, flow_mark_shuf);
vector unsigned char ftag =
(vector unsigned char)
vec_mergel((vector unsigned int)ftag0,
(vector unsigned int)ftag1);
vector unsigned char invalid_mask =
(vector unsigned char)
vec_cmpeq((vector unsigned int)ftag,
(vector unsigned int)zero);
ol_flags_mask = (vector unsigned char)
vec_or((vector unsigned long)
ol_flags_mask,
(vector unsigned long)fdir_all_flags);
/* Set RTE_MBUF_F_RX_FDIR if flow tag is non-zero. */
invalid_mask = (vector unsigned char)
vec_cmpeq((vector unsigned int)ftag,
(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));
ol_flags_mask = (vector unsigned char)
vec_or((vector unsigned long)
ol_flags_mask,
(vector unsigned long)fdir_flags);
/* 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)ftag,
(vector unsigned int)ft_mask)));
ftag = (vector unsigned char)
((vector unsigned int)ftag +
(vector unsigned int)flow_mark_adj);
elts[pos]->hash.fdir.hi =
((vector unsigned int)ftag)[0];
elts[pos + 1]->hash.fdir.hi =
((vector unsigned int)ftag)[1];
elts[pos + 2]->hash.fdir.hi =
((vector unsigned int)ftag)[2];
elts[pos + 3]->hash.fdir.hi =
((vector unsigned int)ftag)[3];
}
}
if (unlikely(rxq->mcqe_format != MLX5_CQE_RESP_FORMAT_HASH)) {
if (rxq->mcqe_format ==
MLX5_CQE_RESP_FORMAT_L34H_STRIDX) {
const uint8_t pkt_info =
(cq->pkt_info & 0x3) << 6;
const uint8_t pkt_hdr0 =
mcq[pos % 8].hdr_type;
const uint8_t pkt_hdr1 =
mcq[pos % 8 + 1].hdr_type;
const uint8_t pkt_hdr2 =
mcq[pos % 8 + 2].hdr_type;
const uint8_t pkt_hdr3 =
mcq[pos % 8 + 3].hdr_type;
const vector unsigned char vlan_mask =
(vector unsigned char)
(vector unsigned int) {
(RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED),
(RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED),
(RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED),
(RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED)};
const vector unsigned char cv_mask =
(vector unsigned char)
(vector unsigned int) {
MLX5_CQE_VLAN_STRIPPED,
MLX5_CQE_VLAN_STRIPPED,
MLX5_CQE_VLAN_STRIPPED,
MLX5_CQE_VLAN_STRIPPED};
vector unsigned char pkt_cv =
(vector unsigned char)
(vector unsigned int) {
pkt_hdr0 & 0x1, pkt_hdr1 & 0x1,
pkt_hdr2 & 0x1, pkt_hdr3 & 0x1};
ol_flags_mask = (vector unsigned char)
vec_or((vector unsigned long)
ol_flags_mask,
(vector unsigned long)vlan_mask);
ol_flags = (vector unsigned char)
vec_or((vector unsigned long)ol_flags,
(vector unsigned long)
vec_and((vector unsigned long)vlan_mask,
(vector unsigned long)
vec_cmpeq((vector unsigned int)pkt_cv,
(vector unsigned int)cv_mask)));
elts[pos]->packet_type =
mlx5_ptype_table[(pkt_hdr0 >> 2) |
pkt_info];
elts[pos + 1]->packet_type =
mlx5_ptype_table[(pkt_hdr1 >> 2) |
pkt_info];
elts[pos + 2]->packet_type =
mlx5_ptype_table[(pkt_hdr2 >> 2) |
pkt_info];
elts[pos + 3]->packet_type =
mlx5_ptype_table[(pkt_hdr3 >> 2) |
pkt_info];
if (rxq->tunnel) {
elts[pos]->packet_type |=
!!(((pkt_hdr0 >> 2) |
pkt_info) & (1 << 6));
elts[pos + 1]->packet_type |=
!!(((pkt_hdr1 >> 2) |
pkt_info) & (1 << 6));
elts[pos + 2]->packet_type |=
!!(((pkt_hdr2 >> 2) |
pkt_info) & (1 << 6));
elts[pos + 3]->packet_type |=
!!(((pkt_hdr3 >> 2) |
pkt_info) & (1 << 6));
}
}
const vector unsigned char hash_mask =
(vector unsigned char)(vector unsigned int) {
RTE_MBUF_F_RX_RSS_HASH,
RTE_MBUF_F_RX_RSS_HASH,
RTE_MBUF_F_RX_RSS_HASH,
RTE_MBUF_F_RX_RSS_HASH};
const vector unsigned char rearm_flags =
(vector unsigned char)(vector unsigned int) {
(uint32_t)t_pkt->ol_flags,
(uint32_t)t_pkt->ol_flags,
(uint32_t)t_pkt->ol_flags,
(uint32_t)t_pkt->ol_flags};
ol_flags_mask = (vector unsigned char)
vec_or((vector unsigned long)ol_flags_mask,
(vector unsigned long)hash_mask);
ol_flags = (vector unsigned char)
vec_or((vector unsigned long)ol_flags,
(vector unsigned long)
vec_andc((vector unsigned long)rearm_flags,
(vector unsigned long)ol_flags_mask));
elts[pos]->ol_flags =
((vector unsigned int)ol_flags)[0];
elts[pos + 1]->ol_flags =
((vector unsigned int)ol_flags)[1];
elts[pos + 2]->ol_flags =
((vector unsigned int)ol_flags)[2];
elts[pos + 3]->ol_flags =
((vector unsigned int)ol_flags)[3];
elts[pos]->hash.rss = 0;
elts[pos + 1]->hash.rss = 0;
elts[pos + 2]->hash.rss = 0;
elts[pos + 3]->hash.rss = 0;
}
if (rxq->dynf_meta) {
int32_t offs = rxq->flow_meta_offset;
const uint32_t meta =
*RTE_MBUF_DYNFIELD(t_pkt, offs, uint32_t *);
/* Check if title packet has valid metadata. */
if (meta) {
MLX5_ASSERT(t_pkt->ol_flags &
rxq->flow_meta_mask);
*RTE_MBUF_DYNFIELD(elts[pos], offs,
uint32_t *) = meta;
*RTE_MBUF_DYNFIELD(elts[pos + 1], offs,
uint32_t *) = meta;
*RTE_MBUF_DYNFIELD(elts[pos + 2], offs,
uint32_t *) = meta;
*RTE_MBUF_DYNFIELD(elts[pos + 3], offs,
uint32_t *) = meta;
}
}
pos += MLX5_VPMD_DESCS_PER_LOOP;
/* Move to next CQE and invalidate consumed CQEs. */
if (!(pos & 0x7) && pos < mcqe_n) {
if (pos + 8 < mcqe_n)
rte_prefetch0((void *)(cq + pos + 8));
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
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 * RTE_MBUF_F_RX_RSS_HASH |
rxq->hw_timestamp * rxq->timestamp_rx_flag,
rxq->rss_hash * RTE_MBUF_F_RX_RSS_HASH |
rxq->hw_timestamp * rxq->timestamp_rx_flag,
rxq->rss_hash * RTE_MBUF_F_RX_RSS_HASH |
rxq->hw_timestamp * rxq->timestamp_rx_flag,
rxq->rss_hash * RTE_MBUF_F_RX_RSS_HASH |
rxq->hw_timestamp * rxq->timestamp_rx_flag};
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)(RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED),
(uint8_t)(RTE_MBUF_F_RX_IP_CKSUM_GOOD >> 1), 0,
(uint8_t)(RTE_MBUF_F_RX_L4_CKSUM_GOOD >> 1), 0,
(uint8_t)((RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_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){
RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED};
const vector unsigned char mbuf_init =
(vector unsigned char)vec_vsx_ld
(0, (vector unsigned char *)&rxq->mbuf_initializer);
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){
RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_FDIR,
RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_FDIR};
vector unsigned char fdir_id_flags =
(vector unsigned char)(vector unsigned int){
RTE_MBUF_F_RX_FDIR_ID, RTE_MBUF_F_RX_FDIR_ID,
RTE_MBUF_F_RX_FDIR_ID, RTE_MBUF_F_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 RTE_MBUF_F_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);
}
/**
* Process a non-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 non-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.
* @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.
* @param[out] comp
* Pointer to a index. Set it to the first compressed completion if any.
*
* @return
* Number of CQEs successfully processed.
*/
static inline uint16_t
rxq_cq_process_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq,
struct rte_mbuf **elts, struct rte_mbuf **pkts,
uint16_t pkts_n, uint64_t *err, uint64_t *comp)
{
const uint16_t q_n = 1 << rxq->cqe_n;
const uint16_t q_mask = q_n - 1;
unsigned int pos;
uint64_t n = 0;
uint64_t comp_idx = MLX5_VPMD_DESCS_PER_LOOP;
uint16_t nocmp_n = 0;
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};
/*
* A. load first Qword (8bytes) in one loop.
* B. copy 4 mbuf pointers from elts ring to returning 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){
*(__rte_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){
*(__rte_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){
*(__rte_aligned(8) unsigned long *)
&cq[pos + p1].sop_drop_qpn, 0LL};
rte_compiler_barrier();
cqes[0] = (vector unsigned char)(vector unsigned long){
*(__rte_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_io_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){
*(__rte_aligned(8) unsigned long *)
&cq[pos + p3].rsvd4[2], 0LL};
cqe_tmp1 = (vector unsigned char)(vector unsigned long){
*(__rte_aligned(8) unsigned long *)
&cq[pos + p2].rsvd4[2], 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){
*(__rte_aligned(8) unsigned long *)
&cq[pos + p1].rsvd4[2], 0LL};
cqe_tmp1 = (vector unsigned char)(vector unsigned long){
*(__rte_aligned(8) unsigned long *)
&cq[pos].rsvd4[2], 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 (unlikely(rxq->shared)) {
pkts[pos]->port = cq[pos].user_index_low;
pkts[pos + p1]->port = cq[pos + p1].user_index_low;
pkts[pos + p2]->port = cq[pos + p2].user_index_low;
pkts[pos + p3]->port = cq[pos + p3].user_index_low;
}
if (rxq->hw_timestamp) {
int offset = rxq->timestamp_offset;
if (rxq->rt_timestamp) {
struct mlx5_dev_ctx_shared *sh = rxq->sh;
uint64_t ts;
ts = rte_be_to_cpu_64(cq[pos].timestamp);
mlx5_timestamp_set(pkts[pos], offset,
mlx5_txpp_convert_rx_ts(sh, ts));
ts = rte_be_to_cpu_64(cq[pos + p1].timestamp);
mlx5_timestamp_set(pkts[pos + 1], offset,
mlx5_txpp_convert_rx_ts(sh, ts));
ts = rte_be_to_cpu_64(cq[pos + p2].timestamp);
mlx5_timestamp_set(pkts[pos + 2], offset,
mlx5_txpp_convert_rx_ts(sh, ts));
ts = rte_be_to_cpu_64(cq[pos + p3].timestamp);
mlx5_timestamp_set(pkts[pos + 3], offset,
mlx5_txpp_convert_rx_ts(sh, ts));
} else {
mlx5_timestamp_set(pkts[pos], offset,
rte_be_to_cpu_64(cq[pos].timestamp));
mlx5_timestamp_set(pkts[pos + 1], offset,
rte_be_to_cpu_64(cq[pos + p1].timestamp));
mlx5_timestamp_set(pkts[pos + 2], offset,
rte_be_to_cpu_64(cq[pos + p2].timestamp));
mlx5_timestamp_set(pkts[pos + 3], offset,
rte_be_to_cpu_64(cq[pos + p3].timestamp));
}
}
if (rxq->dynf_meta) {
uint64_t flag = rxq->flow_meta_mask;
int32_t offs = rxq->flow_meta_offset;
uint32_t mask = rxq->flow_meta_port_mask;
uint32_t metadata;
/* This code is subject for futher optimization. */
metadata = rte_be_to_cpu_32
(cq[pos].flow_table_metadata) & mask;
*RTE_MBUF_DYNFIELD(pkts[pos], offs, uint32_t *) =
metadata;
pkts[pos]->ol_flags |= metadata ? flag : 0ULL;
metadata = rte_be_to_cpu_32
(cq[pos + 1].flow_table_metadata) & mask;
*RTE_MBUF_DYNFIELD(pkts[pos + 1], offs, uint32_t *) =
metadata;
pkts[pos + 1]->ol_flags |= metadata ? flag : 0ULL;
metadata = rte_be_to_cpu_32
(cq[pos + 2].flow_table_metadata) & mask;
*RTE_MBUF_DYNFIELD(pkts[pos + 2], offs, uint32_t *) =
metadata;
pkts[pos + 2]->ol_flags |= metadata ? flag : 0ULL;
metadata = rte_be_to_cpu_32
(cq[pos + 3].flow_table_metadata) & mask;
*RTE_MBUF_DYNFIELD(pkts[pos + 3], offs, uint32_t *) =
metadata;
pkts[pos + 3]->ol_flags |= metadata ? flag : 0ULL;
}
#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;
}
#ifdef MLX5_PMD_SOFT_COUNTERS
rxq->stats.ipackets += nocmp_n;
rxq->stats.ibytes += rcvd_byte;
#endif
if (comp_idx == n)
*comp = comp_idx;
return nocmp_n;
}
#endif /* RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_ */
Reference in New Issue View Git Blame Copy Permalink