@@ -64,3 +64,22 @@ Refer to the document :ref:`compiling and testing a PMD for a NIC <pmd_build_and
for details.
+Features
+--------
+
+Vector PMD
+~~~~~~~~~~
+
+Vector path for RX and TX path are selected automatically. The paths
+are chosen based on 2 conditions.
+
+- ``CPU``
+ On the X86 platform, the driver checks if the CPU supports AVX512.
+ If the CPU supports AVX512 and EAL argument ``--force-max-simd-bitwidth``
+ is set to 512, AVX512 paths will be chosen.
+
+- ``Offload features``
+ The supported HW offload features are described in the document idpf.ini,
+ A value "P" means the offload feature is not supported by vector path.
+ If any not supported features are used, idpf vector PMD is disabled and the
+ scalar paths are chosen.
@@ -69,7 +69,8 @@ idpf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
dev_info->tx_offload_capa =
RTE_ETH_TX_OFFLOAD_TCP_TSO |
- RTE_ETH_TX_OFFLOAD_MULTI_SEGS;
+ RTE_ETH_TX_OFFLOAD_MULTI_SEGS |
+ RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
dev_info->default_txconf = (struct rte_eth_txconf) {
.tx_free_thresh = IDPF_DEFAULT_TX_FREE_THRESH,
@@ -162,6 +162,11 @@ struct idpf_adapter {
uint32_t max_txq_per_msg;
uint32_t ptype_tbl[IDPF_MAX_PKT_TYPE] __rte_cache_min_aligned;
+
+ bool rx_vec_allowed;
+ bool tx_vec_allowed;
+ bool rx_use_avx512;
+ bool tx_use_avx512;
};
TAILQ_HEAD(idpf_adapter_list, idpf_adapter);
@@ -4,9 +4,11 @@
#include <ethdev_driver.h>
#include <rte_net.h>
+#include <rte_vect.h>
#include "idpf_ethdev.h"
#include "idpf_rxtx.h"
+#include "idpf_rxtx_vec_common.h"
static int
check_rx_thresh(uint16_t nb_desc, uint16_t thresh)
@@ -252,6 +254,8 @@ reset_single_rx_queue(struct idpf_rx_queue *rxq)
rxq->pkt_first_seg = NULL;
rxq->pkt_last_seg = NULL;
+ rxq->rxrearm_start = 0;
+ rxq->rxrearm_nb = 0;
}
static void
@@ -2073,25 +2077,166 @@ idpf_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
return i;
}
+static void __rte_cold
+release_rxq_mbufs_vec(struct idpf_rx_queue *rxq)
+{
+ const uint16_t mask = rxq->nb_rx_desc - 1;
+ uint16_t i;
+
+ if (rxq->sw_ring == NULL || 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] != NULL)
+ rte_pktmbuf_free_seg(rxq->sw_ring[i]);
+ }
+ } else {
+ for (i = rxq->rx_tail; i != rxq->rxrearm_start; i = (i + 1) & mask) {
+ if (rxq->sw_ring[i] != NULL)
+ rte_pktmbuf_free_seg(rxq->sw_ring[i]);
+ }
+ }
+
+ 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 const struct idpf_rxq_ops def_singleq_rx_ops_vec = {
+ .release_mbufs = release_rxq_mbufs_vec,
+};
+
+static inline int
+idpf_singleq_rx_vec_setup_default(struct idpf_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;
+}
+
+int __rte_cold
+idpf_singleq_rx_vec_setup(struct idpf_rx_queue *rxq)
+{
+ rxq->ops = &def_singleq_rx_ops_vec;
+ return idpf_singleq_rx_vec_setup_default(rxq);
+}
+
void
idpf_set_rx_function(struct rte_eth_dev *dev)
{
struct idpf_vport *vport = dev->data->dev_private;
+#ifdef RTE_ARCH_X86
+ struct idpf_adapter *ad = vport->adapter;
+ struct idpf_rx_queue *rxq;
+ int i;
+
+ if (idpf_rx_vec_dev_check_default(dev) == IDPF_VECTOR_PATH &&
+ rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_128) {
+ ad->rx_vec_allowed = true;
+
+ if (rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_512)
+#ifdef CC_AVX512_SUPPORT
+ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) == 1 &&
+ rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512BW) == 1)
+ ad->rx_use_avx512 = true;
+#else
+ PMD_DRV_LOG(NOTICE,
+ "AVX512 is not supported in build env");
+#endif /* CC_AVX512_SUPPORT */
+ } else {
+ ad->rx_vec_allowed = false;
+ }
+#endif /* RTE_ARCH_X86 */
+
+#ifdef RTE_ARCH_X86
+ if (vport->rxq_model == VIRTCHNL2_QUEUE_MODEL_SPLIT) {
+ dev->rx_pkt_burst = idpf_splitq_recv_pkts;
+ } else {
+ if (ad->rx_vec_allowed) {
+ for (i = 0; i < dev->data->nb_tx_queues; i++) {
+ rxq = dev->data->rx_queues[i];
+ (void)idpf_singleq_rx_vec_setup(rxq);
+ }
+#ifdef CC_AVX512_SUPPORT
+ if (ad->rx_use_avx512) {
+ dev->rx_pkt_burst = idpf_singleq_recv_pkts_avx512;
+ return;
+ }
+#endif /* CC_AVX512_SUPPORT */
+ }
+ dev->rx_pkt_burst = idpf_singleq_recv_pkts;
+ }
+#else
if (vport->rxq_model == VIRTCHNL2_QUEUE_MODEL_SPLIT)
dev->rx_pkt_burst = idpf_splitq_recv_pkts;
else
dev->rx_pkt_burst = idpf_singleq_recv_pkts;
+#endif /* RTE_ARCH_X86 */
}
void
idpf_set_tx_function(struct rte_eth_dev *dev)
{
struct idpf_vport *vport = dev->data->dev_private;
+#ifdef RTE_ARCH_X86
+ struct idpf_adapter *ad = vport->adapter;
+#ifdef CC_AVX512_SUPPORT
+ struct idpf_tx_queue *txq;
+ int i;
+#endif /* CC_AVX512_SUPPORT */
+
+ if (idpf_rx_vec_dev_check_default(dev) == IDPF_VECTOR_PATH &&
+ rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_128) {
+ ad->tx_vec_allowed = true;
+ if (rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_512)
+#ifdef CC_AVX512_SUPPORT
+ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) == 1 &&
+ rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512BW) == 1)
+ ad->tx_use_avx512 = true;
+#else
+ PMD_DRV_LOG(NOTICE,
+ "AVX512 is not supported in build env");
+#endif /* CC_AVX512_SUPPORT */
+ } else {
+ ad->tx_vec_allowed = false;
+ }
+#endif /* RTE_ARCH_X86 */
+
if (vport->txq_model == VIRTCHNL2_QUEUE_MODEL_SPLIT) {
dev->tx_pkt_burst = idpf_splitq_xmit_pkts;
dev->tx_pkt_prepare = idpf_prep_pkts;
} else {
+#ifdef RTE_ARCH_X86
+ if (ad->tx_vec_allowed) {
+#ifdef CC_AVX512_SUPPORT
+ if (ad->tx_use_avx512) {
+ for (i = 0; i < dev->data->nb_tx_queues; i++) {
+ txq = dev->data->tx_queues[i];
+ if (txq == NULL)
+ continue;
+ idpf_singleq_tx_vec_setup_avx512(txq);
+ }
+ dev->tx_pkt_burst = idpf_singleq_xmit_pkts_avx512;
+ dev->tx_pkt_prepare = idpf_prep_pkts;
+ return;
+ }
+#endif /* CC_AVX512_SUPPORT */
+ }
+#endif /* RTE_ARCH_X86 */
dev->tx_pkt_burst = idpf_singleq_xmit_pkts;
dev->tx_pkt_prepare = idpf_prep_pkts;
}
@@ -18,6 +18,12 @@
#define IDPF_RX_MAX_BURST 32
#define IDPF_DEFAULT_RX_FREE_THRESH 32
+/* used for Vector PMD */
+#define IDPF_VPMD_RX_MAX_BURST 32
+#define IDPF_VPMD_TX_MAX_BURST 32
+#define IDPF_VPMD_DESCS_PER_LOOP 4
+#define IDPF_RXQ_REARM_THRESH 64
+
#define IDPF_DEFAULT_TX_RS_THRESH 32
#define IDPF_DEFAULT_TX_FREE_THRESH 32
@@ -54,6 +60,11 @@ struct idpf_rx_queue {
struct rte_mbuf *pkt_last_seg; /* last segment of current packet */
struct rte_mbuf fake_mbuf; /* dummy mbuf */
+ /* used for VPMD */
+ uint16_t rxrearm_nb; /* number of remaining to be re-armed */
+ uint16_t rxrearm_start; /* the idx we start the re-arming from */
+ uint64_t mbuf_initializer; /* value to init mbufs */
+
uint16_t rx_nb_avail;
uint16_t rx_next_avail;
@@ -84,6 +95,10 @@ struct idpf_tx_entry {
uint16_t last_id;
};
+struct idpf_tx_vec_entry {
+ struct rte_mbuf *mbuf;
+};
+
/* Structure associated with each TX queue. */
struct idpf_tx_queue {
const struct rte_memzone *mz; /* memzone for Tx ring */
@@ -149,6 +164,7 @@ int idpf_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
uint16_t nb_desc, unsigned int socket_id,
const struct rte_eth_rxconf *rx_conf,
struct rte_mempool *mp);
+int idpf_singleq_tx_vec_setup_avx512(struct idpf_tx_queue *txq);
int idpf_rx_queue_init(struct rte_eth_dev *dev, uint16_t rx_queue_id);
int idpf_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id);
int idpf_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id);
@@ -157,16 +173,21 @@ void idpf_dev_rx_queue_release(struct rte_eth_dev *dev, uint16_t qid);
int idpf_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
uint16_t nb_desc, unsigned int socket_id,
const struct rte_eth_txconf *tx_conf);
+int idpf_singleq_rx_vec_setup(struct idpf_rx_queue *rxq);
int idpf_tx_queue_init(struct rte_eth_dev *dev, uint16_t tx_queue_id);
int idpf_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id);
int idpf_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id);
void idpf_dev_tx_queue_release(struct rte_eth_dev *dev, uint16_t qid);
uint16_t idpf_singleq_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
+uint16_t idpf_singleq_recv_pkts_avx512(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts);
uint16_t idpf_splitq_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
uint16_t idpf_singleq_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
+uint16_t idpf_singleq_xmit_pkts_avx512(void *tx_queue, struct rte_mbuf **tx_pkts,
+ uint16_t nb_pkts);
uint16_t idpf_splitq_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
uint16_t idpf_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
new file mode 100644
@@ -0,0 +1,871 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2022 Intel Corporation
+ */
+
+#include "idpf_rxtx_vec_common.h"
+
+#include <rte_vect.h>
+
+#ifndef __INTEL_COMPILER
+#pragma GCC diagnostic ignored "-Wcast-qual"
+#endif
+
+#define IDPF_DESCS_PER_LOOP_AVX 8
+#define PKTLEN_SHIFT 10
+
+/******************************************************************************
+ * If user knows a specific offload is not enabled by APP,
+ * the macro can be commented to save the effort of fast path.
+ * Currently below 1 feature is supported in RX path,
+ * 1, packet type analysis
+ ******************************************************************************/
+#define IDPF_RX_PTYPE_OFFLOAD
+
+static __rte_always_inline void
+idpf_singleq_rearm_common(struct idpf_rx_queue *rxq)
+{
+ struct rte_mbuf **rxp = &rxq->sw_ring[rxq->rxrearm_start];
+ volatile union virtchnl2_rx_desc *rxdp = rxq->rx_ring;
+ uint16_t rx_id;
+ int i;
+
+ rxdp += rxq->rxrearm_start;
+
+ /* Pull 'n' more MBUFs into the software ring */
+ if (rte_mempool_get_bulk(rxq->mp,
+ (void *)rxp,
+ IDPF_RXQ_REARM_THRESH) < 0) {
+ if (rxq->rxrearm_nb + IDPF_RXQ_REARM_THRESH >=
+ rxq->nb_rx_desc) {
+ __m128i dma_addr0;
+
+ dma_addr0 = _mm_setzero_si128();
+ for (i = 0; i < IDPF_VPMD_DESCS_PER_LOOP; i++) {
+ rxp[i] = &rxq->fake_mbuf;
+ _mm_store_si128((__m128i *)&rxdp[i].read,
+ dma_addr0);
+ }
+ }
+ rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
+ IDPF_RXQ_REARM_THRESH;
+ return;
+ }
+ 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 < IDPF_RXQ_REARM_THRESH;
+ i += 8, rxp += 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 = rxp[0];
+ mb1 = rxp[1];
+ mb2 = rxp[2];
+ mb3 = rxp[3];
+ mb4 = rxp[4];
+ mb5 = rxp[5];
+ mb6 = rxp[6];
+ mb7 = rxp[7];
+
+ /* 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);
+ }
+
+ rxq->rxrearm_start += IDPF_RXQ_REARM_THRESH;
+ if (rxq->rxrearm_start >= rxq->nb_rx_desc)
+ rxq->rxrearm_start = 0;
+
+ rxq->rxrearm_nb -= IDPF_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 */
+ IDPF_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
+}
+
+static __rte_always_inline void
+idpf_singleq_rearm(struct idpf_rx_queue *rxq)
+{
+ int i;
+ uint16_t rx_id;
+ volatile union virtchnl2_rx_desc *rxdp = rxq->rx_ring;
+ struct rte_mempool_cache *cache =
+ rte_mempool_default_cache(rxq->mp, rte_lcore_id());
+ struct rte_mbuf **rxp = &rxq->sw_ring[rxq->rxrearm_start];
+
+ rxdp += rxq->rxrearm_start;
+
+ if (unlikely(cache == NULL))
+ return idpf_singleq_rearm_common(rxq);
+
+ /* We need to pull 'n' more MBUFs into the software ring from mempool
+ * We inline the mempool function here, so we can vectorize the copy
+ * from the cache into the shadow ring.
+ */
+
+ /* Can this be satisfied from the cache? */
+ if (cache->len < IDPF_RXQ_REARM_THRESH) {
+ /* No. Backfill the cache first, and then fill from it */
+ uint32_t req = IDPF_RXQ_REARM_THRESH + (cache->size -
+ cache->len);
+
+ /* How many do we require i.e. number to fill the cache + the request */
+ int ret = rte_mempool_ops_dequeue_bulk
+ (rxq->mp, &cache->objs[cache->len], req);
+ if (ret == 0) {
+ cache->len += req;
+ } else {
+ if (rxq->rxrearm_nb + IDPF_RXQ_REARM_THRESH >=
+ rxq->nb_rx_desc) {
+ __m128i dma_addr0;
+
+ dma_addr0 = _mm_setzero_si128();
+ for (i = 0; i < IDPF_VPMD_DESCS_PER_LOOP; i++) {
+ rxp[i] = &rxq->fake_mbuf;
+ _mm_storeu_si128((__m128i *)&rxdp[i].read,
+ dma_addr0);
+ }
+ }
+ rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
+ IDPF_RXQ_REARM_THRESH;
+ return;
+ }
+ }
+
+ const __m512i iova_offsets = _mm512_set1_epi64(offsetof
+ (struct rte_mbuf, buf_iova));
+ const __m512i headroom = _mm512_set1_epi64(RTE_PKTMBUF_HEADROOM);
+
+ /* to shuffle the addresses to correct slots. Values 4-7 will contain
+ * zeros, so use 7 for a zero-value.
+ */
+ const __m512i permute_idx = _mm512_set_epi64(7, 7, 3, 1, 7, 7, 2, 0);
+
+ /* Initialize the mbufs in vector, process 8 mbufs in one loop, taking
+ * from mempool cache and populating both shadow and HW rings
+ */
+ for (i = 0; i < IDPF_RXQ_REARM_THRESH / IDPF_DESCS_PER_LOOP_AVX; i++) {
+ const __m512i mbuf_ptrs = _mm512_loadu_si512
+ (&cache->objs[cache->len - IDPF_DESCS_PER_LOOP_AVX]);
+ _mm512_storeu_si512(rxp, mbuf_ptrs);
+
+ const __m512i iova_base_addrs = _mm512_i64gather_epi64
+ (_mm512_add_epi64(mbuf_ptrs, iova_offsets),
+ 0, /* base */
+ 1 /* scale */);
+ const __m512i iova_addrs = _mm512_add_epi64(iova_base_addrs,
+ headroom);
+ const __m512i iovas0 = _mm512_castsi256_si512
+ (_mm512_extracti64x4_epi64(iova_addrs, 0));
+ const __m512i iovas1 = _mm512_castsi256_si512
+ (_mm512_extracti64x4_epi64(iova_addrs, 1));
+
+ /* permute leaves desc 2-3 addresses in header address slots 0-1
+ * but these are ignored by driver since header split not
+ * enabled. Similarly for desc 6 & 7.
+ */
+ const __m512i desc0_1 = _mm512_permutexvar_epi64
+ (permute_idx,
+ iovas0);
+ const __m512i desc2_3 = _mm512_bsrli_epi128(desc0_1, 8);
+
+ const __m512i desc4_5 = _mm512_permutexvar_epi64
+ (permute_idx,
+ iovas1);
+ const __m512i desc6_7 = _mm512_bsrli_epi128(desc4_5, 8);
+
+ _mm512_storeu_si512((void *)rxdp, desc0_1);
+ _mm512_storeu_si512((void *)(rxdp + 2), desc2_3);
+ _mm512_storeu_si512((void *)(rxdp + 4), desc4_5);
+ _mm512_storeu_si512((void *)(rxdp + 6), desc6_7);
+
+ rxp += IDPF_DESCS_PER_LOOP_AVX;
+ rxdp += IDPF_DESCS_PER_LOOP_AVX;
+ cache->len -= IDPF_DESCS_PER_LOOP_AVX;
+ }
+
+ rxq->rxrearm_start += IDPF_RXQ_REARM_THRESH;
+ if (rxq->rxrearm_start >= rxq->nb_rx_desc)
+ rxq->rxrearm_start = 0;
+
+ rxq->rxrearm_nb -= IDPF_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 */
+ IDPF_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
+}
+
+#define IDPF_RX_LEN_MASK 0x80808080
+static __rte_always_inline uint16_t
+_idpf_singleq_recv_raw_pkts_avx512(struct idpf_rx_queue *rxq,
+ struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+#ifdef IDPF_RX_PTYPE_OFFLOAD
+ const uint32_t *type_table = rxq->adapter->ptype_tbl;
+#endif
+
+ const __m256i mbuf_init = _mm256_set_epi64x(0, 0, 0,
+ rxq->mbuf_initializer);
+ struct rte_mbuf **sw_ring = &rxq->sw_ring[rxq->rx_tail];
+ volatile union virtchnl2_rx_desc *rxdp = rxq->rx_ring;
+
+ rxdp += rxq->rx_tail;
+
+ rte_prefetch0(rxdp);
+
+ /* nb_pkts has to be floor-aligned to IDPF_DESCS_PER_LOOP_AVX */
+ nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, IDPF_DESCS_PER_LOOP_AVX);
+
+ /* See if we need to rearm the RX queue - gives the prefetch a bit
+ * of time to act
+ */
+ if (rxq->rxrearm_nb > IDPF_RXQ_REARM_THRESH)
+ idpf_singleq_rearm(rxq);
+
+ /* Before we start moving massive data around, check to see if
+ * there is actually a packet available
+ */
+ if ((rxdp->flex_nic_wb.status_error0 &
+ rte_cpu_to_le_32(1 << VIRTCHNL2_RX_FLEX_DESC_STATUS0_DD_S)) == 0)
+ return 0;
+
+ /* 8 packets DD mask, LSB in each 32-bit value */
+ const __m256i dd_check = _mm256_set1_epi32(1);
+
+ /* mask to shuffle from desc. to mbuf (4 descriptors)*/
+ const __m512i shuf_msk =
+ _mm512_set_epi32
+ (/* 1st descriptor */
+ 0xFFFFFFFF, /* rss set as unknown */
+ 0xFFFF0504, /* vlan_macip set as unknown */
+ /* octet 15~14, 16 bits data_len */
+ 0xFFFF0504, /* skip high 16 bits pkt_len, zero out */
+ /* octet 15~14, low 16 bits pkt_len */
+ 0xFFFFFFFF, /* pkt_type set as unknown */
+ /* 2nd descriptor */
+ 0xFFFFFFFF, /* rss set as unknown */
+ 0xFFFF0504, /* vlan_macip set as unknown */
+ /* octet 15~14, 16 bits data_len */
+ 0xFFFF0504, /* skip high 16 bits pkt_len, zero out */
+ /* octet 15~14, low 16 bits pkt_len */
+ 0xFFFFFFFF, /* pkt_type set as unknown */
+ /* 3rd descriptor */
+ 0xFFFFFFFF, /* rss set as unknown */
+ 0xFFFF0504, /* vlan_macip set as unknown */
+ /* octet 15~14, 16 bits data_len */
+ 0xFFFF0504, /* skip high 16 bits pkt_len, zero out */
+ /* octet 15~14, low 16 bits pkt_len */
+ 0xFFFFFFFF, /* pkt_type set as unknown */
+ /* 4th descriptor */
+ 0xFFFFFFFF, /* rss set as unknown */
+ 0xFFFF0504, /* vlan_macip set as unknown */
+ /* octet 15~14, 16 bits data_len */
+ 0xFFFF0504, /* skip high 16 bits pkt_len, zero out */
+ /* octet 15~14, low 16 bits pkt_len */
+ 0xFFFFFFFF /* pkt_type set as unknown */
+ );
+ /**
+ * compile-time check the shuffle layout is correct.
+ * NOTE: the first field (lowest address) is given last in set_epi
+ * calls above.
+ */
+ RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
+ offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
+ RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
+ offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
+ RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, vlan_tci) !=
+ offsetof(struct rte_mbuf, rx_descriptor_fields1) + 10);
+ RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, hash) !=
+ offsetof(struct rte_mbuf, rx_descriptor_fields1) + 12);
+
+ uint16_t i, received;
+
+ for (i = 0, received = 0; i < nb_pkts;
+ i += IDPF_DESCS_PER_LOOP_AVX,
+ rxdp += IDPF_DESCS_PER_LOOP_AVX) {
+ /* step 1, copy over 8 mbuf pointers to rx_pkts array */
+ _mm256_storeu_si256((void *)&rx_pkts[i],
+ _mm256_loadu_si256((void *)&sw_ring[i]));
+#ifdef RTE_ARCH_X86_64
+ _mm256_storeu_si256
+ ((void *)&rx_pkts[i + 4],
+ _mm256_loadu_si256((void *)&sw_ring[i + 4]));
+#endif
+
+ __m512i raw_desc0_3, raw_desc4_7;
+ const __m128i raw_desc7 =
+ _mm_load_si128((void *)(rxdp + 7));
+ rte_compiler_barrier();
+ const __m128i raw_desc6 =
+ _mm_load_si128((void *)(rxdp + 6));
+ rte_compiler_barrier();
+ const __m128i raw_desc5 =
+ _mm_load_si128((void *)(rxdp + 5));
+ rte_compiler_barrier();
+ const __m128i raw_desc4 =
+ _mm_load_si128((void *)(rxdp + 4));
+ rte_compiler_barrier();
+ const __m128i raw_desc3 =
+ _mm_load_si128((void *)(rxdp + 3));
+ rte_compiler_barrier();
+ const __m128i raw_desc2 =
+ _mm_load_si128((void *)(rxdp + 2));
+ rte_compiler_barrier();
+ const __m128i raw_desc1 =
+ _mm_load_si128((void *)(rxdp + 1));
+ rte_compiler_barrier();
+ const __m128i raw_desc0 =
+ _mm_load_si128((void *)(rxdp + 0));
+
+ raw_desc4_7 = _mm512_broadcast_i32x4(raw_desc4);
+ raw_desc4_7 = _mm512_inserti32x4(raw_desc4_7, raw_desc5, 1);
+ raw_desc4_7 = _mm512_inserti32x4(raw_desc4_7, raw_desc6, 2);
+ raw_desc4_7 = _mm512_inserti32x4(raw_desc4_7, raw_desc7, 3);
+ raw_desc0_3 = _mm512_broadcast_i32x4(raw_desc0);
+ raw_desc0_3 = _mm512_inserti32x4(raw_desc0_3, raw_desc1, 1);
+ raw_desc0_3 = _mm512_inserti32x4(raw_desc0_3, raw_desc2, 2);
+ raw_desc0_3 = _mm512_inserti32x4(raw_desc0_3, raw_desc3, 3);
+
+ /**
+ * convert descriptors 4-7 into mbufs, adjusting length and
+ * re-arranging fields. Then write into the mbuf
+ */
+ const __m512i len4_7 = _mm512_slli_epi32(raw_desc4_7,
+ PKTLEN_SHIFT);
+ const __m512i desc4_7 = _mm512_mask_blend_epi16(IDPF_RX_LEN_MASK,
+ raw_desc4_7,
+ len4_7);
+ __m512i mb4_7 = _mm512_shuffle_epi8(desc4_7, shuf_msk);
+
+#ifdef IDPF_RX_PTYPE_OFFLOAD
+ /**
+ * to get packet types, shift 64-bit values down 30 bits
+ * and so ptype is in lower 8-bits in each
+ */
+ const __m512i ptypes4_7 = _mm512_srli_epi64(desc4_7, 16);
+ const __m256i ptypes6_7 = _mm512_extracti64x4_epi64(ptypes4_7, 1);
+ const __m256i ptypes4_5 = _mm512_extracti64x4_epi64(ptypes4_7, 0);
+ const uint8_t ptype7 = _mm256_extract_epi8(ptypes6_7, 16);
+ const uint8_t ptype6 = _mm256_extract_epi8(ptypes6_7, 0);
+ const uint8_t ptype5 = _mm256_extract_epi8(ptypes4_5, 16);
+ const uint8_t ptype4 = _mm256_extract_epi8(ptypes4_5, 0);
+
+ const __m512i ptype4_7 = _mm512_set_epi32
+ (0, 0, 0, type_table[ptype7],
+ 0, 0, 0, type_table[ptype6],
+ 0, 0, 0, type_table[ptype5],
+ 0, 0, 0, type_table[ptype4]);
+ mb4_7 = _mm512_mask_blend_epi32(0x1111, mb4_7, ptype4_7);
+#endif
+
+ /**
+ * convert descriptors 0-3 into mbufs, adjusting length and
+ * re-arranging fields. Then write into the mbuf
+ */
+ const __m512i len0_3 = _mm512_slli_epi32(raw_desc0_3,
+ PKTLEN_SHIFT);
+ const __m512i desc0_3 = _mm512_mask_blend_epi16(IDPF_RX_LEN_MASK,
+ raw_desc0_3,
+ len0_3);
+ __m512i mb0_3 = _mm512_shuffle_epi8(desc0_3, shuf_msk);
+
+#ifdef IDPF_RX_PTYPE_OFFLOAD
+ /* get the packet types */
+ const __m512i ptypes0_3 = _mm512_srli_epi64(desc0_3, 16);
+ const __m256i ptypes2_3 = _mm512_extracti64x4_epi64(ptypes0_3, 1);
+ const __m256i ptypes0_1 = _mm512_extracti64x4_epi64(ptypes0_3, 0);
+ const uint8_t ptype3 = _mm256_extract_epi8(ptypes2_3, 16);
+ const uint8_t ptype2 = _mm256_extract_epi8(ptypes2_3, 0);
+ const uint8_t ptype1 = _mm256_extract_epi8(ptypes0_1, 16);
+ const uint8_t ptype0 = _mm256_extract_epi8(ptypes0_1, 0);
+
+ const __m512i ptype0_3 = _mm512_set_epi32
+ (0, 0, 0, type_table[ptype3],
+ 0, 0, 0, type_table[ptype2],
+ 0, 0, 0, type_table[ptype1],
+ 0, 0, 0, type_table[ptype0]);
+ mb0_3 = _mm512_mask_blend_epi32(0x1111, mb0_3, ptype0_3);
+#endif
+
+ /**
+ * use permute/extract to get status content
+ * After the operations, the packets status flags are in the
+ * order (hi->lo): [1, 3, 5, 7, 0, 2, 4, 6]
+ */
+ /* merge the status bits into one register */
+ const __m512i status_permute_msk = _mm512_set_epi32
+ (0, 0, 0, 0,
+ 0, 0, 0, 0,
+ 22, 30, 6, 14,
+ 18, 26, 2, 10);
+ const __m512i raw_status0_7 = _mm512_permutex2var_epi32
+ (raw_desc4_7, status_permute_msk, raw_desc0_3);
+ __m256i status0_7 = _mm512_extracti64x4_epi64
+ (raw_status0_7, 0);
+
+ /* now do flag manipulation */
+
+ /**
+ * At this point, we have the 8 sets of flags in the low 16-bits
+ * of each 32-bit value.
+ * We want to extract these, and merge them with the mbuf init
+ * data so we can do a single write to the mbuf to set the flags
+ * and all the other initialization fields. Extracting the
+ * appropriate flags means that we have to do a shift and blend
+ * for each mbuf before we do the write. However, we can also
+ * add in the previously computed rx_descriptor fields to
+ * make a single 256-bit write per mbuf
+ */
+ /* check the structure matches expectations */
+ RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, ol_flags) !=
+ offsetof(struct rte_mbuf, rearm_data) + 8);
+ RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, rearm_data) !=
+ RTE_ALIGN(offsetof(struct rte_mbuf,
+ rearm_data),
+ 16));
+ /* build up data and do writes */
+ __m256i rearm0, rearm1, rearm2, rearm3, rearm4, rearm5,
+ rearm6, rearm7;
+ const __m256i mb4_5 = _mm512_extracti64x4_epi64(mb4_7, 0);
+ const __m256i mb6_7 = _mm512_extracti64x4_epi64(mb4_7, 1);
+ const __m256i mb0_1 = _mm512_extracti64x4_epi64(mb0_3, 0);
+ const __m256i mb2_3 = _mm512_extracti64x4_epi64(mb0_3, 1);
+
+ rearm6 = _mm256_permute2f128_si256(mbuf_init, mb6_7, 0x20);
+ rearm4 = _mm256_permute2f128_si256(mbuf_init, mb4_5, 0x20);
+ rearm2 = _mm256_permute2f128_si256(mbuf_init, mb2_3, 0x20);
+ rearm0 = _mm256_permute2f128_si256(mbuf_init, mb0_1, 0x20);
+
+ /* write to mbuf */
+ _mm256_storeu_si256((__m256i *)&rx_pkts[i + 6]->rearm_data,
+ rearm6);
+ _mm256_storeu_si256((__m256i *)&rx_pkts[i + 4]->rearm_data,
+ rearm4);
+ _mm256_storeu_si256((__m256i *)&rx_pkts[i + 2]->rearm_data,
+ rearm2);
+ _mm256_storeu_si256((__m256i *)&rx_pkts[i + 0]->rearm_data,
+ rearm0);
+
+ rearm7 = _mm256_blend_epi32(mbuf_init, mb6_7, 0xF0);
+ rearm5 = _mm256_blend_epi32(mbuf_init, mb4_5, 0xF0);
+ rearm3 = _mm256_blend_epi32(mbuf_init, mb2_3, 0xF0);
+ rearm1 = _mm256_blend_epi32(mbuf_init, mb0_1, 0xF0);
+
+ /* again write to mbufs */
+ _mm256_storeu_si256((__m256i *)&rx_pkts[i + 7]->rearm_data,
+ rearm7);
+ _mm256_storeu_si256((__m256i *)&rx_pkts[i + 5]->rearm_data,
+ rearm5);
+ _mm256_storeu_si256((__m256i *)&rx_pkts[i + 3]->rearm_data,
+ rearm3);
+ _mm256_storeu_si256((__m256i *)&rx_pkts[i + 1]->rearm_data,
+ rearm1);
+
+ /* perform dd_check */
+ status0_7 = _mm256_and_si256(status0_7, dd_check);
+ status0_7 = _mm256_packs_epi32(status0_7,
+ _mm256_setzero_si256());
+
+ uint64_t burst = __builtin_popcountll
+ (_mm_cvtsi128_si64
+ (_mm256_extracti128_si256
+ (status0_7, 1)));
+ burst += __builtin_popcountll
+ (_mm_cvtsi128_si64
+ (_mm256_castsi256_si128(status0_7)));
+ received += burst;
+ if (burst != IDPF_DESCS_PER_LOOP_AVX)
+ break;
+ }
+
+ /* update tail pointers */
+ rxq->rx_tail += received;
+ rxq->rx_tail &= (rxq->nb_rx_desc - 1);
+ if ((rxq->rx_tail & 1) == 1 && received > 1) { /* keep aligned */
+ rxq->rx_tail--;
+ received--;
+ }
+ rxq->rxrearm_nb += received;
+ return received;
+}
+
+/**
+ * Notice:
+ * - nb_pkts < IDPF_DESCS_PER_LOOP, just return no packet
+ */
+uint16_t
+idpf_singleq_recv_pkts_avx512(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ return _idpf_singleq_recv_raw_pkts_avx512(rx_queue, rx_pkts, nb_pkts);
+}
+
+static __rte_always_inline int
+idpf_tx_free_bufs_avx512(struct idpf_tx_queue *txq)
+{
+ struct idpf_tx_vec_entry *txep;
+ uint32_t n;
+ uint32_t i;
+ int nb_free = 0;
+ struct rte_mbuf *m, *free[txq->rs_thresh];
+
+ /* check DD bits on threshold descriptor */
+ if ((txq->tx_ring[txq->next_dd].qw1.cmd_dtype &
+ rte_cpu_to_le_64(IDPF_TXD_QW1_DTYPE_M)) !=
+ rte_cpu_to_le_64(IDPF_TX_DESC_DTYPE_DESC_DONE))
+ return 0;
+
+ n = txq->rs_thresh;
+
+ /* first buffer to free from S/W ring is at index
+ * tx_next_dd - (tx_rs_thresh-1)
+ */
+ txep = (void *)txq->sw_ring;
+ txep += txq->next_dd - (n - 1);
+
+ if (txq->offloads & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE && (n & 31) == 0) {
+ struct rte_mempool *mp = txep[0].mbuf->pool;
+ struct rte_mempool_cache *cache = rte_mempool_default_cache(mp,
+ rte_lcore_id());
+ void **cache_objs;
+
+ if (cache == NULL || cache->len == 0)
+ goto normal;
+
+ cache_objs = &cache->objs[cache->len];
+
+ if (n > RTE_MEMPOOL_CACHE_MAX_SIZE) {
+ rte_mempool_ops_enqueue_bulk(mp, (void *)txep, n);
+ goto done;
+ }
+
+ /* The cache follows the following algorithm
+ * 1. Add the objects to the cache
+ * 2. Anything greater than the cache min value (if it crosses the
+ * cache flush threshold) is flushed to the ring.
+ */
+ /* Add elements back into the cache */
+ uint32_t copied = 0;
+ /* n is multiple of 32 */
+ while (copied < n) {
+ const __m512i a = _mm512_loadu_si512(&txep[copied]);
+ const __m512i b = _mm512_loadu_si512(&txep[copied + 8]);
+ const __m512i c = _mm512_loadu_si512(&txep[copied + 16]);
+ const __m512i d = _mm512_loadu_si512(&txep[copied + 24]);
+
+ _mm512_storeu_si512(&cache_objs[copied], a);
+ _mm512_storeu_si512(&cache_objs[copied + 8], b);
+ _mm512_storeu_si512(&cache_objs[copied + 16], c);
+ _mm512_storeu_si512(&cache_objs[copied + 24], d);
+ copied += 32;
+ }
+ cache->len += n;
+
+ if (cache->len >= cache->flushthresh) {
+ rte_mempool_ops_enqueue_bulk(mp,
+ &cache->objs[cache->size],
+ cache->len - cache->size);
+ cache->len = cache->size;
+ }
+ goto done;
+ }
+
+normal:
+ m = rte_pktmbuf_prefree_seg(txep[0].mbuf);
+ if (likely(m != NULL)) {
+ free[0] = m;
+ nb_free = 1;
+ for (i = 1; i < n; i++) {
+ m = rte_pktmbuf_prefree_seg(txep[i].mbuf);
+ if (likely(m != NULL)) {
+ 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 != NULL)
+ rte_mempool_put(m->pool, m);
+ }
+ }
+
+done:
+ /* buffers were freed, update counters */
+ txq->nb_free = (uint16_t)(txq->nb_free + txq->rs_thresh);
+ txq->next_dd = (uint16_t)(txq->next_dd + txq->rs_thresh);
+ if (txq->next_dd >= txq->nb_tx_desc)
+ txq->next_dd = (uint16_t)(txq->rs_thresh - 1);
+
+ return txq->rs_thresh;
+}
+
+static __rte_always_inline void
+tx_backlog_entry_avx512(struct idpf_tx_vec_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];
+}
+
+#define IDPF_FLEX_TXD_QW1_BUF_SZ_S 48
+static __rte_always_inline void
+idpf_vtx1(volatile struct idpf_flex_tx_desc *txdp,
+ struct rte_mbuf *pkt, uint64_t flags)
+{
+ uint64_t high_qw =
+ (IDPF_TX_DESC_DTYPE_FLEX_DATA << IDPF_FLEX_TXD_QW1_DTYPE_S |
+ ((uint64_t)flags << IDPF_FLEX_TXD_QW1_CMD_S) |
+ ((uint64_t)pkt->data_len << IDPF_FLEX_TXD_QW1_BUF_SZ_S));
+
+ __m128i descriptor = _mm_set_epi64x(high_qw,
+ pkt->buf_iova + pkt->data_off);
+ _mm_storeu_si128((__m128i *)txdp, descriptor);
+}
+
+#define IDPF_TX_LEN_MASK 0xAA
+#define IDPF_TX_OFF_MASK 0x55
+static __rte_always_inline void
+idpf_vtx(volatile struct idpf_flex_tx_desc *txdp,
+ struct rte_mbuf **pkt, uint16_t nb_pkts, uint64_t flags)
+{
+ const uint64_t hi_qw_tmpl = (IDPF_TX_DESC_DTYPE_FLEX_DATA |
+ ((uint64_t)flags << IDPF_FLEX_TXD_QW1_CMD_S));
+
+ /* if unaligned on 32-bit boundary, do one to align */
+ if (((uintptr_t)txdp & 0x1F) != 0 && nb_pkts != 0) {
+ idpf_vtx1(txdp, *pkt, flags);
+ nb_pkts--, txdp++, pkt++;
+ }
+
+ /* do 4 at a time while possible, in bursts */
+ for (; nb_pkts > 3; txdp += 4, pkt += 4, nb_pkts -= 4) {
+ uint64_t hi_qw3 =
+ hi_qw_tmpl |
+ ((uint64_t)pkt[3]->data_len <<
+ IDPF_FLEX_TXD_QW1_BUF_SZ_S);
+ uint64_t hi_qw2 =
+ hi_qw_tmpl |
+ ((uint64_t)pkt[2]->data_len <<
+ IDPF_FLEX_TXD_QW1_BUF_SZ_S);
+ uint64_t hi_qw1 =
+ hi_qw_tmpl |
+ ((uint64_t)pkt[1]->data_len <<
+ IDPF_FLEX_TXD_QW1_BUF_SZ_S);
+ uint64_t hi_qw0 =
+ hi_qw_tmpl |
+ ((uint64_t)pkt[0]->data_len <<
+ IDPF_FLEX_TXD_QW1_BUF_SZ_S);
+
+ __m512i desc0_3 =
+ _mm512_set_epi64
+ (hi_qw3,
+ pkt[3]->buf_iova + pkt[3]->data_off,
+ hi_qw2,
+ pkt[2]->buf_iova + pkt[2]->data_off,
+ hi_qw1,
+ pkt[1]->buf_iova + pkt[1]->data_off,
+ hi_qw0,
+ pkt[0]->buf_iova + pkt[0]->data_off);
+ _mm512_storeu_si512((void *)txdp, desc0_3);
+ }
+
+ /* do any last ones */
+ while (nb_pkts) {
+ idpf_vtx1(txdp, *pkt, flags);
+ txdp++, pkt++, nb_pkts--;
+ }
+}
+
+static __rte_always_inline uint16_t
+idpf_xmit_fixed_burst_vec_avx512(void *tx_queue, struct rte_mbuf **tx_pkts,
+ uint16_t nb_pkts)
+{
+ struct idpf_tx_queue *txq = tx_queue;
+ volatile struct idpf_flex_tx_desc *txdp;
+ struct idpf_tx_vec_entry *txep;
+ uint16_t n, nb_commit, tx_id;
+ uint64_t flags = IDPF_TX_FLEX_DESC_CMD_EOP;
+ uint64_t rs = IDPF_TX_FLEX_DESC_CMD_RS | flags;
+
+ /* cross rx_thresh boundary is not allowed */
+ nb_pkts = RTE_MIN(nb_pkts, txq->rs_thresh);
+
+ if (txq->nb_free < txq->free_thresh)
+ idpf_tx_free_bufs_avx512(txq);
+
+ nb_pkts = (uint16_t)RTE_MIN(txq->nb_free, nb_pkts);
+ nb_commit = nb_pkts;
+ if (unlikely(nb_pkts == 0))
+ return 0;
+
+ tx_id = txq->tx_tail;
+ txdp = &txq->tx_ring[tx_id];
+ txep = (void *)txq->sw_ring;
+ txep += tx_id;
+
+ txq->nb_free = (uint16_t)(txq->nb_free - nb_pkts);
+
+ n = (uint16_t)(txq->nb_tx_desc - tx_id);
+ if (nb_commit >= n) {
+ tx_backlog_entry_avx512(txep, tx_pkts, n);
+
+ idpf_vtx(txdp, tx_pkts, n - 1, flags);
+ tx_pkts += (n - 1);
+ txdp += (n - 1);
+
+ idpf_vtx1(txdp, *tx_pkts++, rs);
+
+ nb_commit = (uint16_t)(nb_commit - n);
+
+ tx_id = 0;
+ txq->next_rs = (uint16_t)(txq->rs_thresh - 1);
+
+ /* avoid reach the end of ring */
+ txdp = &txq->tx_ring[tx_id];
+ txep = (void *)txq->sw_ring;
+ txep += tx_id;
+ }
+
+ tx_backlog_entry_avx512(txep, tx_pkts, nb_commit);
+
+ idpf_vtx(txdp, tx_pkts, nb_commit, flags);
+
+ tx_id = (uint16_t)(tx_id + nb_commit);
+ if (tx_id > txq->next_rs) {
+ txq->tx_ring[txq->next_rs].qw1.cmd_dtype |=
+ rte_cpu_to_le_64(((uint64_t)IDPF_TX_FLEX_DESC_CMD_RS) <<
+ IDPF_FLEX_TXD_QW1_CMD_S);
+ txq->next_rs =
+ (uint16_t)(txq->next_rs + txq->rs_thresh);
+ }
+
+ txq->tx_tail = tx_id;
+
+ IDPF_PCI_REG_WRITE(txq->qtx_tail, txq->tx_tail);
+
+ return nb_pkts;
+}
+
+static __rte_always_inline uint16_t
+idpf_xmit_pkts_vec_avx512_cmn(void *tx_queue, struct rte_mbuf **tx_pkts,
+ uint16_t nb_pkts)
+{
+ uint16_t nb_tx = 0;
+ struct idpf_tx_queue *txq = tx_queue;
+
+ while (nb_pkts) {
+ uint16_t ret, num;
+
+ num = (uint16_t)RTE_MIN(nb_pkts, txq->rs_thresh);
+ ret = idpf_xmit_fixed_burst_vec_avx512(tx_queue, &tx_pkts[nb_tx],
+ num);
+ nb_tx += ret;
+ nb_pkts -= ret;
+ if (ret < num)
+ break;
+ }
+
+ return nb_tx;
+}
+
+uint16_t
+idpf_singleq_xmit_pkts_avx512(void *tx_queue, struct rte_mbuf **tx_pkts,
+ uint16_t nb_pkts)
+{
+ return idpf_xmit_pkts_vec_avx512_cmn(tx_queue, tx_pkts, nb_pkts);
+}
+
+static inline void
+idpf_singleq_tx_release_mbufs_avx512(struct idpf_tx_queue *txq)
+{
+ unsigned int i;
+ const uint16_t max_desc = (uint16_t)(txq->nb_tx_desc - 1);
+ struct idpf_tx_vec_entry *swr = (void *)txq->sw_ring;
+
+ if (txq->sw_ring == NULL || txq->nb_free == max_desc)
+ return;
+
+ i = txq->next_dd - txq->rs_thresh + 1;
+ 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;
+ }
+}
+
+static const struct idpf_txq_ops avx512_singleq_tx_vec_ops = {
+ .release_mbufs = idpf_singleq_tx_release_mbufs_avx512,
+};
+
+int __rte_cold
+idpf_singleq_tx_vec_setup_avx512(struct idpf_tx_queue *txq)
+{
+ txq->ops = &avx512_singleq_tx_vec_ops;
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,100 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2022 Intel Corporation
+ */
+
+#ifndef _IDPF_RXTX_VEC_COMMON_H_
+#define _IDPF_RXTX_VEC_COMMON_H_
+#include <stdint.h>
+#include <ethdev_driver.h>
+#include <rte_malloc.h>
+
+#include "idpf_ethdev.h"
+#include "idpf_rxtx.h"
+
+#ifndef __INTEL_COMPILER
+#pragma GCC diagnostic ignored "-Wcast-qual"
+#endif
+
+#define IDPF_VECTOR_PATH 0
+#define ICE_RX_NO_VECTOR_FLAGS ( \
+ RTE_ETH_RX_OFFLOAD_IPV4_CKSUM | \
+ RTE_ETH_RX_OFFLOAD_UDP_CKSUM | \
+ RTE_ETH_RX_OFFLOAD_TCP_CKSUM | \
+ RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM | \
+ RTE_ETH_RX_OFFLOAD_TIMESTAMP)
+#define ICE_TX_NO_VECTOR_FLAGS ( \
+ RTE_ETH_TX_OFFLOAD_TCP_TSO | \
+ RTE_ETH_TX_OFFLOAD_MULTI_SEGS)
+
+static inline int
+idpf_rx_vec_queue_default(struct idpf_rx_queue *rxq)
+{
+ if (rxq == NULL)
+ return -1;
+
+ if (rte_is_power_of_2(rxq->nb_rx_desc) == 0)
+ return -1;
+
+ if (rxq->rx_free_thresh < IDPF_VPMD_RX_MAX_BURST)
+ return -1;
+
+ if ((rxq->nb_rx_desc % rxq->rx_free_thresh) != 0)
+ return -1;
+
+ if ((rxq->offloads & ICE_RX_NO_VECTOR_FLAGS) != 0)
+ return -1;
+
+ return IDPF_VECTOR_PATH;
+}
+
+static inline int
+idpf_tx_vec_queue_default(struct idpf_tx_queue *txq)
+{
+ if (txq == NULL)
+ return -1;
+
+ if (txq->rs_thresh < IDPF_VPMD_TX_MAX_BURST ||
+ (txq->rs_thresh & 3) != 0)
+ return -1;
+
+ if ((txq->offloads & ICE_TX_NO_VECTOR_FLAGS) != 0)
+ return -1;
+
+ return IDPF_VECTOR_PATH;
+}
+
+static inline int
+idpf_rx_vec_dev_check_default(struct rte_eth_dev *dev)
+{
+ int i;
+ struct idpf_rx_queue *rxq;
+ int ret = 0;
+
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ rxq = dev->data->rx_queues[i];
+ ret = (idpf_rx_vec_queue_default(rxq));
+ if (ret < 0)
+ return -1;
+ }
+
+ return IDPF_VECTOR_PATH;
+}
+
+static inline int
+idpf_tx_vec_dev_check_default(struct rte_eth_dev *dev)
+{
+ int i;
+ struct idpf_tx_queue *txq;
+ int ret = 0;
+
+ for (i = 0; i < dev->data->nb_tx_queues; i++) {
+ txq = dev->data->tx_queues[i];
+ ret = idpf_tx_vec_queue_default(txq);
+ if (ret < 0)
+ return -1;
+ }
+
+ return IDPF_VECTOR_PATH;
+}
+
+#endif /*_IDPF_RXTX_VEC_COMMON_H_*/
@@ -14,3 +14,31 @@ sources = files(
'idpf_rxtx.c',
'idpf_vchnl.c',
)
+
+if arch_subdir == 'x86'
+ idpf_avx512_cpu_support = (
+ cc.get_define('__AVX512F__', args: machine_args) != '' and
+ cc.get_define('__AVX512BW__', args: machine_args) != ''
+ )
+
+ idpf_avx512_cc_support = (
+ not machine_args.contains('-mno-avx512f') and
+ cc.has_argument('-mavx512f') and
+ cc.has_argument('-mavx512bw')
+ )
+
+ if idpf_avx512_cpu_support == true or idpf_avx512_cc_support == true
+ cflags += ['-DCC_AVX512_SUPPORT']
+ avx512_args = [cflags, '-mavx512f', '-mavx512bw']
+ if cc.has_argument('-march=skylake-avx512')
+ avx512_args += '-march=skylake-avx512'
+ endif
+ idpf_avx512_lib = static_library('idpf_avx512_lib',
+ 'idpf_rxtx_vec_avx512.c',
+ dependencies: [static_rte_common_idpf, static_rte_ethdev, static_rte_bus_pci,
+ static_rte_kvargs, static_rte_hash],
+ include_directories: includes,
+ c_args: avx512_args)
+ objs += idpf_avx512_lib.extract_objects('idpf_rxtx_vec_avx512.c')
+ endif
+endif