numam-dpdk/drivers/net/ice/ice_rxtx_vec_common.h

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2019 Intel Corporation
*/
#ifndef _ICE_RXTX_VEC_COMMON_H_
#define _ICE_RXTX_VEC_COMMON_H_
#include "ice_rxtx.h"
#ifndef __INTEL_COMPILER
#pragma GCC diagnostic ignored "-Wcast-qual"
#endif
static inline uint16_t
ice_rx_reassemble_packets(struct ice_rx_queue *rxq, struct rte_mbuf **rx_bufs,
uint16_t nb_bufs, uint8_t *split_flags)
{
struct rte_mbuf *pkts[ICE_VPMD_RX_BURST] = {0}; /*finished pkts*/
struct rte_mbuf *start = rxq->pkt_first_seg;
struct rte_mbuf *end = rxq->pkt_last_seg;
unsigned int pkt_idx, buf_idx;
for (buf_idx = 0, pkt_idx = 0; buf_idx < nb_bufs; buf_idx++) {
if (end) {
/* processing a split packet */
end->next = rx_bufs[buf_idx];
rx_bufs[buf_idx]->data_len += rxq->crc_len;
start->nb_segs++;
start->pkt_len += rx_bufs[buf_idx]->data_len;
end = end->next;
if (!split_flags[buf_idx]) {
/* it's the last packet of the set */
start->hash = end->hash;
start->vlan_tci = end->vlan_tci;
start->ol_flags = end->ol_flags;
/* we need to strip crc for the whole packet */
start->pkt_len -= rxq->crc_len;
if (end->data_len > rxq->crc_len) {
end->data_len -= rxq->crc_len;
} else {
/* free up last mbuf */
struct rte_mbuf *secondlast = start;
start->nb_segs--;
while (secondlast->next != end)
secondlast = secondlast->next;
secondlast->data_len -= (rxq->crc_len -
end->data_len);
secondlast->next = NULL;
rte_pktmbuf_free_seg(end);
}
pkts[pkt_idx++] = start;
start = NULL;
end = NULL;
}
} else {
/* not processing a split packet */
if (!split_flags[buf_idx]) {
/* not a split packet, save and skip */
pkts[pkt_idx++] = rx_bufs[buf_idx];
continue;
}
start = rx_bufs[buf_idx];
end = start;
rx_bufs[buf_idx]->data_len += rxq->crc_len;
rx_bufs[buf_idx]->pkt_len += rxq->crc_len;
}
}
/* save the partial packet for next time */
rxq->pkt_first_seg = start;
rxq->pkt_last_seg = end;
rte_memcpy(rx_bufs, pkts, pkt_idx * (sizeof(*pkts)));
return pkt_idx;
}
static __rte_always_inline int
ice_tx_free_bufs_vec(struct ice_tx_queue *txq)
{
struct ice_tx_entry *txep;
uint32_t n;
uint32_t i;
int nb_free = 0;
struct rte_mbuf *m, *free[ICE_TX_MAX_FREE_BUF_SZ];
/* check DD bits on threshold descriptor */
if ((txq->tx_ring[txq->tx_next_dd].cmd_type_offset_bsz &
rte_cpu_to_le_64(ICE_TXD_QW1_DTYPE_M)) !=
rte_cpu_to_le_64(ICE_TX_DESC_DTYPE_DESC_DONE))
return 0;
n = txq->tx_rs_thresh;
/* first buffer to free from S/W ring is at index
* tx_next_dd - (tx_rs_thresh-1)
*/
txep = &txq->sw_ring[txq->tx_next_dd - (n - 1)];
m = rte_pktmbuf_prefree_seg(txep[0].mbuf);
if (likely(m)) {
free[0] = m;
nb_free = 1;
for (i = 1; i < n; i++) {
m = rte_pktmbuf_prefree_seg(txep[i].mbuf);
if (likely(m)) {
if (likely(m->pool == free[0]->pool)) {
free[nb_free++] = m;
} else {
rte_mempool_put_bulk(free[0]->pool,
(void *)free,
nb_free);
free[0] = m;
nb_free = 1;
}
}
}
rte_mempool_put_bulk(free[0]->pool, (void **)free, nb_free);
} else {
for (i = 1; i < n; i++) {
m = rte_pktmbuf_prefree_seg(txep[i].mbuf);
if (m)
rte_mempool_put(m->pool, m);
}
}
/* buffers were freed, update counters */
txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + txq->tx_rs_thresh);
txq->tx_next_dd = (uint16_t)(txq->tx_next_dd + txq->tx_rs_thresh);
if (txq->tx_next_dd >= txq->nb_tx_desc)
txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
return txq->tx_rs_thresh;
}
static __rte_always_inline void
ice_tx_backlog_entry(struct ice_tx_entry *txep,
struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
{
int i;
for (i = 0; i < (int)nb_pkts; ++i)
txep[i].mbuf = tx_pkts[i];
}
static inline void
_ice_rx_queue_release_mbufs_vec(struct ice_rx_queue *rxq)
{
const unsigned int mask = rxq->nb_rx_desc - 1;
unsigned int i;
if (unlikely(!rxq->sw_ring)) {
PMD_DRV_LOG(DEBUG, "sw_ring is NULL");
return;
}
if (rxq->rxrearm_nb >= rxq->nb_rx_desc)
return;
/* free all mbufs that are valid in the ring */
if (rxq->rxrearm_nb == 0) {
for (i = 0; i < rxq->nb_rx_desc; i++) {
if (rxq->sw_ring[i].mbuf)
rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
}
} else {
for (i = rxq->rx_tail;
i != rxq->rxrearm_start;
i = (i + 1) & mask) {
if (rxq->sw_ring[i].mbuf)
rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
}
}
rxq->rxrearm_nb = rxq->nb_rx_desc;
/* set all entries to NULL */
memset(rxq->sw_ring, 0, sizeof(rxq->sw_ring[0]) * rxq->nb_rx_desc);
}
static inline void
_ice_tx_queue_release_mbufs_vec(struct ice_tx_queue *txq)
{
uint16_t i;
if (unlikely(!txq || !txq->sw_ring)) {
PMD_DRV_LOG(DEBUG, "Pointer to rxq or sw_ring is NULL");
return;
}
/**
* vPMD tx will not set sw_ring's mbuf to NULL after free,
* so need to free remains more carefully.
*/
i = txq->tx_next_dd - txq->tx_rs_thresh + 1;
#ifdef CC_AVX512_SUPPORT
struct rte_eth_dev *dev = txq->vsi->adapter->eth_dev;
if (dev->tx_pkt_burst == ice_xmit_pkts_vec_avx512 ||
dev->tx_pkt_burst == ice_xmit_pkts_vec_avx512_offload) {
struct ice_vec_tx_entry *swr = (void *)txq->sw_ring;
if (txq->tx_tail < i) {
for (; i < txq->nb_tx_desc; i++) {
rte_pktmbuf_free_seg(swr[i].mbuf);
swr[i].mbuf = NULL;
}
i = 0;
}
for (; i < txq->tx_tail; i++) {
rte_pktmbuf_free_seg(swr[i].mbuf);
swr[i].mbuf = NULL;
}
} else
#endif
{
if (txq->tx_tail < i) {
for (; i < txq->nb_tx_desc; i++) {
rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf);
txq->sw_ring[i].mbuf = NULL;
}
i = 0;
}
for (; i < txq->tx_tail; i++) {
rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf);
txq->sw_ring[i].mbuf = NULL;
}
}
}
static inline int
ice_rxq_vec_setup_default(struct ice_rx_queue *rxq)
{
uintptr_t p;
struct rte_mbuf mb_def = { .buf_addr = 0 }; /* zeroed mbuf */
mb_def.nb_segs = 1;
mb_def.data_off = RTE_PKTMBUF_HEADROOM;
mb_def.port = rxq->port_id;
rte_mbuf_refcnt_set(&mb_def, 1);
/* prevent compiler reordering: rearm_data covers previous fields */
rte_compiler_barrier();
p = (uintptr_t)&mb_def.rearm_data;
rxq->mbuf_initializer = *(uint64_t *)p;
return 0;
}
#define ICE_TX_NO_VECTOR_FLAGS ( \
DEV_TX_OFFLOAD_MULTI_SEGS | \
DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM | \
DEV_TX_OFFLOAD_TCP_TSO)
#define ICE_TX_VECTOR_OFFLOAD ( \
DEV_TX_OFFLOAD_VLAN_INSERT | \
DEV_TX_OFFLOAD_QINQ_INSERT | \
DEV_TX_OFFLOAD_IPV4_CKSUM | \
DEV_TX_OFFLOAD_SCTP_CKSUM | \
DEV_TX_OFFLOAD_UDP_CKSUM | \
DEV_TX_OFFLOAD_TCP_CKSUM)
#define ICE_RX_VECTOR_OFFLOAD ( \
DEV_RX_OFFLOAD_CHECKSUM | \
DEV_RX_OFFLOAD_SCTP_CKSUM | \
DEV_RX_OFFLOAD_VLAN | \
DEV_RX_OFFLOAD_RSS_HASH)
#define ICE_VECTOR_PATH 0
#define ICE_VECTOR_OFFLOAD_PATH 1
static inline int
ice_rx_vec_queue_default(struct ice_rx_queue *rxq)
{
if (!rxq)
return -1;
if (!rte_is_power_of_2(rxq->nb_rx_desc))
return -1;
if (rxq->rx_free_thresh < ICE_VPMD_RX_BURST)
return -1;
if (rxq->nb_rx_desc % rxq->rx_free_thresh)
return -1;
if (rxq->proto_xtr != PROTO_XTR_NONE)
return -1;
if (rxq->offloads & ICE_RX_VECTOR_OFFLOAD)
return ICE_VECTOR_OFFLOAD_PATH;
return ICE_VECTOR_PATH;
}
static inline int
ice_tx_vec_queue_default(struct ice_tx_queue *txq)
{
if (!txq)
return -1;
if (txq->tx_rs_thresh < ICE_VPMD_TX_BURST ||
txq->tx_rs_thresh > ICE_TX_MAX_FREE_BUF_SZ)
return -1;
if (txq->offloads & ICE_TX_NO_VECTOR_FLAGS)
return -1;
if (txq->offloads & ICE_TX_VECTOR_OFFLOAD)
return ICE_VECTOR_OFFLOAD_PATH;
return ICE_VECTOR_PATH;
}
static inline int
ice_rx_vec_dev_check_default(struct rte_eth_dev *dev)
{
int i;
struct ice_rx_queue *rxq;
int ret = 0;
int result = 0;
for (i = 0; i < dev->data->nb_rx_queues; i++) {
rxq = dev->data->rx_queues[i];
ret = (ice_rx_vec_queue_default(rxq));
if (ret < 0)
return -1;
if (ret == ICE_VECTOR_OFFLOAD_PATH)
result = ret;
}
return result;
}
static inline int
ice_tx_vec_dev_check_default(struct rte_eth_dev *dev)
{
int i;
struct ice_tx_queue *txq;
int ret = 0;
int result = 0;
for (i = 0; i < dev->data->nb_tx_queues; i++) {
txq = dev->data->tx_queues[i];
ret = ice_tx_vec_queue_default(txq);
if (ret < 0)
return -1;
if (ret == ICE_VECTOR_OFFLOAD_PATH)
result = ret;
}
return result;
}
#ifdef CC_AVX2_SUPPORT
static __rte_always_inline void
ice_rxq_rearm_common(struct ice_rx_queue *rxq, __rte_unused bool avx512)
{
int i;
uint16_t rx_id;
volatile union ice_rx_flex_desc *rxdp;
struct ice_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start];
rxdp = rxq->rx_ring + rxq->rxrearm_start;
/* Pull 'n' more MBUFs into the software ring */
if (rte_mempool_get_bulk(rxq->mp,
(void *)rxep,
ICE_RXQ_REARM_THRESH) < 0) {
if (rxq->rxrearm_nb + ICE_RXQ_REARM_THRESH >=
rxq->nb_rx_desc) {
__m128i dma_addr0;
dma_addr0 = _mm_setzero_si128();
for (i = 0; i < ICE_DESCS_PER_LOOP; i++) {
rxep[i].mbuf = &rxq->fake_mbuf;
_mm_store_si128((__m128i *)&rxdp[i].read,
dma_addr0);
}
}
rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
ICE_RXQ_REARM_THRESH;
return;
}
#ifndef RTE_LIBRTE_ICE_16BYTE_RX_DESC
struct rte_mbuf *mb0, *mb1;
__m128i dma_addr0, dma_addr1;
__m128i hdr_room = _mm_set_epi64x(RTE_PKTMBUF_HEADROOM,
RTE_PKTMBUF_HEADROOM);
/* Initialize the mbufs in vector, process 2 mbufs in one loop */
for (i = 0; i < ICE_RXQ_REARM_THRESH; i += 2, rxep += 2) {
__m128i vaddr0, vaddr1;
mb0 = rxep[0].mbuf;
mb1 = rxep[1].mbuf;
/* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */
RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, buf_iova) !=
offsetof(struct rte_mbuf, buf_addr) + 8);
vaddr0 = _mm_loadu_si128((__m128i *)&mb0->buf_addr);
vaddr1 = _mm_loadu_si128((__m128i *)&mb1->buf_addr);
/* convert pa to dma_addr hdr/data */
dma_addr0 = _mm_unpackhi_epi64(vaddr0, vaddr0);
dma_addr1 = _mm_unpackhi_epi64(vaddr1, vaddr1);
/* add headroom to pa values */
dma_addr0 = _mm_add_epi64(dma_addr0, hdr_room);
dma_addr1 = _mm_add_epi64(dma_addr1, hdr_room);
/* flush desc with pa dma_addr */
_mm_store_si128((__m128i *)&rxdp++->read, dma_addr0);
_mm_store_si128((__m128i *)&rxdp++->read, dma_addr1);
}
#else
#ifdef CC_AVX512_SUPPORT
if (avx512) {
struct rte_mbuf *mb0, *mb1, *mb2, *mb3;
struct rte_mbuf *mb4, *mb5, *mb6, *mb7;
__m512i dma_addr0_3, dma_addr4_7;
__m512i hdr_room = _mm512_set1_epi64(RTE_PKTMBUF_HEADROOM);
/* Initialize the mbufs in vector, process 8 mbufs in one loop */
for (i = 0; i < ICE_RXQ_REARM_THRESH;
i += 8, rxep += 8, rxdp += 8) {
__m128i vaddr0, vaddr1, vaddr2, vaddr3;
__m128i vaddr4, vaddr5, vaddr6, vaddr7;
__m256i vaddr0_1, vaddr2_3;
__m256i vaddr4_5, vaddr6_7;
__m512i vaddr0_3, vaddr4_7;
mb0 = rxep[0].mbuf;
mb1 = rxep[1].mbuf;
mb2 = rxep[2].mbuf;
mb3 = rxep[3].mbuf;
mb4 = rxep[4].mbuf;
mb5 = rxep[5].mbuf;
mb6 = rxep[6].mbuf;
mb7 = rxep[7].mbuf;
/* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */
RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, buf_iova) !=
offsetof(struct rte_mbuf, buf_addr) + 8);
vaddr0 = _mm_loadu_si128((__m128i *)&mb0->buf_addr);
vaddr1 = _mm_loadu_si128((__m128i *)&mb1->buf_addr);
vaddr2 = _mm_loadu_si128((__m128i *)&mb2->buf_addr);
vaddr3 = _mm_loadu_si128((__m128i *)&mb3->buf_addr);
vaddr4 = _mm_loadu_si128((__m128i *)&mb4->buf_addr);
vaddr5 = _mm_loadu_si128((__m128i *)&mb5->buf_addr);
vaddr6 = _mm_loadu_si128((__m128i *)&mb6->buf_addr);
vaddr7 = _mm_loadu_si128((__m128i *)&mb7->buf_addr);
/**
* merge 0 & 1, by casting 0 to 256-bit and inserting 1
* into the high lanes. Similarly for 2 & 3, and so on.
*/
vaddr0_1 =
_mm256_inserti128_si256(_mm256_castsi128_si256(vaddr0),
vaddr1, 1);
vaddr2_3 =
_mm256_inserti128_si256(_mm256_castsi128_si256(vaddr2),
vaddr3, 1);
vaddr4_5 =
_mm256_inserti128_si256(_mm256_castsi128_si256(vaddr4),
vaddr5, 1);
vaddr6_7 =
_mm256_inserti128_si256(_mm256_castsi128_si256(vaddr6),
vaddr7, 1);
vaddr0_3 =
_mm512_inserti64x4(_mm512_castsi256_si512(vaddr0_1),
vaddr2_3, 1);
vaddr4_7 =
_mm512_inserti64x4(_mm512_castsi256_si512(vaddr4_5),
vaddr6_7, 1);
/* convert pa to dma_addr hdr/data */
dma_addr0_3 = _mm512_unpackhi_epi64(vaddr0_3, vaddr0_3);
dma_addr4_7 = _mm512_unpackhi_epi64(vaddr4_7, vaddr4_7);
/* add headroom to pa values */
dma_addr0_3 = _mm512_add_epi64(dma_addr0_3, hdr_room);
dma_addr4_7 = _mm512_add_epi64(dma_addr4_7, hdr_room);
/* flush desc with pa dma_addr */
_mm512_store_si512((__m512i *)&rxdp->read, dma_addr0_3);
_mm512_store_si512((__m512i *)&(rxdp + 4)->read, dma_addr4_7);
}
} else
#endif
{
struct rte_mbuf *mb0, *mb1, *mb2, *mb3;
__m256i dma_addr0_1, dma_addr2_3;
__m256i hdr_room = _mm256_set1_epi64x(RTE_PKTMBUF_HEADROOM);
/* Initialize the mbufs in vector, process 4 mbufs in one loop */
for (i = 0; i < ICE_RXQ_REARM_THRESH;
i += 4, rxep += 4, rxdp += 4) {
__m128i vaddr0, vaddr1, vaddr2, vaddr3;
__m256i vaddr0_1, vaddr2_3;
mb0 = rxep[0].mbuf;
mb1 = rxep[1].mbuf;
mb2 = rxep[2].mbuf;
mb3 = rxep[3].mbuf;
/* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */
RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, buf_iova) !=
offsetof(struct rte_mbuf, buf_addr) + 8);
vaddr0 = _mm_loadu_si128((__m128i *)&mb0->buf_addr);
vaddr1 = _mm_loadu_si128((__m128i *)&mb1->buf_addr);
vaddr2 = _mm_loadu_si128((__m128i *)&mb2->buf_addr);
vaddr3 = _mm_loadu_si128((__m128i *)&mb3->buf_addr);
/**
* merge 0 & 1, by casting 0 to 256-bit and inserting 1
* into the high lanes. Similarly for 2 & 3
*/
vaddr0_1 =
_mm256_inserti128_si256(_mm256_castsi128_si256(vaddr0),
vaddr1, 1);
vaddr2_3 =
_mm256_inserti128_si256(_mm256_castsi128_si256(vaddr2),
vaddr3, 1);
/* convert pa to dma_addr hdr/data */
dma_addr0_1 = _mm256_unpackhi_epi64(vaddr0_1, vaddr0_1);
dma_addr2_3 = _mm256_unpackhi_epi64(vaddr2_3, vaddr2_3);
/* add headroom to pa values */
dma_addr0_1 = _mm256_add_epi64(dma_addr0_1, hdr_room);
dma_addr2_3 = _mm256_add_epi64(dma_addr2_3, hdr_room);
/* flush desc with pa dma_addr */
_mm256_store_si256((__m256i *)&rxdp->read, dma_addr0_1);
_mm256_store_si256((__m256i *)&(rxdp + 2)->read, dma_addr2_3);
}
}
#endif
rxq->rxrearm_start += ICE_RXQ_REARM_THRESH;
if (rxq->rxrearm_start >= rxq->nb_rx_desc)
rxq->rxrearm_start = 0;
rxq->rxrearm_nb -= ICE_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 */
ICE_PCI_REG_WC_WRITE(rxq->qrx_tail, rx_id);
}
#endif
static inline void
ice_txd_enable_offload(struct rte_mbuf *tx_pkt,
uint64_t *txd_hi)
{
uint64_t ol_flags = tx_pkt->ol_flags;
uint32_t td_cmd = 0;
uint32_t td_offset = 0;
/* Tx Checksum Offload */
/* SET MACLEN */
td_offset |= (tx_pkt->l2_len >> 1) <<
ICE_TX_DESC_LEN_MACLEN_S;
/* Enable L3 checksum offload */
if (ol_flags & PKT_TX_IP_CKSUM) {
td_cmd |= ICE_TX_DESC_CMD_IIPT_IPV4_CSUM;
td_offset |= (tx_pkt->l3_len >> 2) <<
ICE_TX_DESC_LEN_IPLEN_S;
} else if (ol_flags & PKT_TX_IPV4) {
td_cmd |= ICE_TX_DESC_CMD_IIPT_IPV4;
td_offset |= (tx_pkt->l3_len >> 2) <<
ICE_TX_DESC_LEN_IPLEN_S;
} else if (ol_flags & PKT_TX_IPV6) {
td_cmd |= ICE_TX_DESC_CMD_IIPT_IPV6;
td_offset |= (tx_pkt->l3_len >> 2) <<
ICE_TX_DESC_LEN_IPLEN_S;
}
/* Enable L4 checksum offloads */
switch (ol_flags & PKT_TX_L4_MASK) {
case PKT_TX_TCP_CKSUM:
td_cmd |= ICE_TX_DESC_CMD_L4T_EOFT_TCP;
td_offset |= (sizeof(struct rte_tcp_hdr) >> 2) <<
ICE_TX_DESC_LEN_L4_LEN_S;
break;
case PKT_TX_SCTP_CKSUM:
td_cmd |= ICE_TX_DESC_CMD_L4T_EOFT_SCTP;
td_offset |= (sizeof(struct rte_sctp_hdr) >> 2) <<
ICE_TX_DESC_LEN_L4_LEN_S;
break;
case PKT_TX_UDP_CKSUM:
td_cmd |= ICE_TX_DESC_CMD_L4T_EOFT_UDP;
td_offset |= (sizeof(struct rte_udp_hdr) >> 2) <<
ICE_TX_DESC_LEN_L4_LEN_S;
break;
default:
break;
}
*txd_hi |= ((uint64_t)td_offset) << ICE_TXD_QW1_OFFSET_S;
/* Tx VLAN/QINQ insertion Offload */
if (ol_flags & (PKT_TX_VLAN | PKT_TX_QINQ)) {
td_cmd |= ICE_TX_DESC_CMD_IL2TAG1;
*txd_hi |= ((uint64_t)tx_pkt->vlan_tci <<
ICE_TXD_QW1_L2TAG1_S);
}
*txd_hi |= ((uint64_t)td_cmd) << ICE_TXD_QW1_CMD_S;
}
#endif