--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017 Intel Corporation
+ */
+
+#include <stdint.h>
+#include <rte_ethdev_driver.h>
+#include <rte_malloc.h>
+
+#include "base/avf_prototype.h"
+#include "base/avf_type.h"
+#include "avf.h"
+#include "avf_rxtx.h"
+#include "avf_rxtx_vec_common.h"
+
+#include <tmmintrin.h>
+
+#ifndef __INTEL_COMPILER
+#pragma GCC diagnostic ignored "-Wcast-qual"
+#endif
+
+static inline void
+avf_rxq_rearm(struct avf_rx_queue *rxq)
+{
+ int i;
+ uint16_t rx_id;
+
+ volatile union avf_rx_desc *rxdp;
+ struct rte_mbuf **rxp = &rxq->sw_ring[rxq->rxrearm_start];
+ struct rte_mbuf *mb0, *mb1;
+ __m128i hdr_room = _mm_set_epi64x(RTE_PKTMBUF_HEADROOM,
+ RTE_PKTMBUF_HEADROOM);
+ __m128i dma_addr0, dma_addr1;
+
+ rxdp = rxq->rx_ring + rxq->rxrearm_start;
+
+ /* Pull 'n' more MBUFs into the software ring */
+ if (rte_mempool_get_bulk(rxq->mp, (void *)rxp,
+ rxq->rx_free_thresh) < 0) {
+ if (rxq->rxrearm_nb + rxq->rx_free_thresh >= rxq->nb_rx_desc) {
+ dma_addr0 = _mm_setzero_si128();
+ for (i = 0; i < AVF_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 +=
+ rxq->rx_free_thresh;
+ return;
+ }
+
+ /* Initialize the mbufs in vector, process 2 mbufs in one loop */
+ for (i = 0; i < rxq->rx_free_thresh; i += 2, rxp += 2) {
+ __m128i vaddr0, vaddr1;
+
+ mb0 = rxp[0];
+ mb1 = rxp[1];
+
+ /* 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);
+ }
+
+ rxq->rxrearm_start += rxq->rx_free_thresh;
+ if (rxq->rxrearm_start >= rxq->nb_rx_desc)
+ rxq->rxrearm_start = 0;
+
+ rxq->rxrearm_nb -= rxq->rx_free_thresh;
+
+ rx_id = (uint16_t)((rxq->rxrearm_start == 0) ?
+ (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1));
+
+ PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u "
+ "rearm_start=%u rearm_nb=%u",
+ rxq->port_id, rxq->queue_id,
+ rx_id, rxq->rxrearm_start, rxq->rxrearm_nb);
+
+ /* Update the tail pointer on the NIC */
+ AVF_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
+}
+
+static inline void
+desc_to_olflags_v(struct avf_rx_queue *rxq, __m128i descs[4],
+ struct rte_mbuf **rx_pkts)
+{
+ const __m128i mbuf_init = _mm_set_epi64x(0, rxq->mbuf_initializer);
+ __m128i rearm0, rearm1, rearm2, rearm3;
+
+ __m128i vlan0, vlan1, rss, l3_l4e;
+
+ /* mask everything except RSS, flow director and VLAN flags
+ * bit2 is for VLAN tag, bit11 for flow director indication
+ * bit13:12 for RSS indication.
+ */
+ const __m128i rss_vlan_msk = _mm_set_epi32(
+ 0x1c03804, 0x1c03804, 0x1c03804, 0x1c03804);
+
+ const __m128i cksum_mask = _mm_set_epi32(
+ PKT_RX_IP_CKSUM_GOOD | PKT_RX_IP_CKSUM_BAD |
+ PKT_RX_L4_CKSUM_GOOD | PKT_RX_L4_CKSUM_BAD |
+ PKT_RX_EIP_CKSUM_BAD,
+ PKT_RX_IP_CKSUM_GOOD | PKT_RX_IP_CKSUM_BAD |
+ PKT_RX_L4_CKSUM_GOOD | PKT_RX_L4_CKSUM_BAD |
+ PKT_RX_EIP_CKSUM_BAD,
+ PKT_RX_IP_CKSUM_GOOD | PKT_RX_IP_CKSUM_BAD |
+ PKT_RX_L4_CKSUM_GOOD | PKT_RX_L4_CKSUM_BAD |
+ PKT_RX_EIP_CKSUM_BAD,
+ PKT_RX_IP_CKSUM_GOOD | PKT_RX_IP_CKSUM_BAD |
+ PKT_RX_L4_CKSUM_GOOD | PKT_RX_L4_CKSUM_BAD |
+ PKT_RX_EIP_CKSUM_BAD);
+
+ /* map rss and vlan type to rss hash and vlan flag */
+ const __m128i vlan_flags = _mm_set_epi8(0, 0, 0, 0,
+ 0, 0, 0, 0,
+ 0, 0, 0, PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
+ 0, 0, 0, 0);
+
+ const __m128i rss_flags = _mm_set_epi8(0, 0, 0, 0,
+ 0, 0, 0, 0,
+ PKT_RX_RSS_HASH | PKT_RX_FDIR, PKT_RX_RSS_HASH, 0, 0,
+ 0, 0, PKT_RX_FDIR, 0);
+
+ const __m128i l3_l4e_flags = _mm_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
+ /* shift right 1 bit to make sure it not exceed 255 */
+ (PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD |
+ PKT_RX_IP_CKSUM_BAD) >> 1,
+ (PKT_RX_IP_CKSUM_GOOD | PKT_RX_EIP_CKSUM_BAD |
+ PKT_RX_L4_CKSUM_BAD) >> 1,
+ (PKT_RX_EIP_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD) >> 1,
+ (PKT_RX_IP_CKSUM_GOOD | PKT_RX_EIP_CKSUM_BAD) >> 1,
+ (PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD) >> 1,
+ (PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_BAD) >> 1,
+ PKT_RX_IP_CKSUM_BAD >> 1,
+ (PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD) >> 1);
+
+ vlan0 = _mm_unpackhi_epi32(descs[0], descs[1]);
+ vlan1 = _mm_unpackhi_epi32(descs[2], descs[3]);
+ vlan0 = _mm_unpacklo_epi64(vlan0, vlan1);
+
+ vlan1 = _mm_and_si128(vlan0, rss_vlan_msk);
+ vlan0 = _mm_shuffle_epi8(vlan_flags, vlan1);
+
+ rss = _mm_srli_epi32(vlan1, 11);
+ rss = _mm_shuffle_epi8(rss_flags, rss);
+
+ l3_l4e = _mm_srli_epi32(vlan1, 22);
+ l3_l4e = _mm_shuffle_epi8(l3_l4e_flags, l3_l4e);
+ /* then we shift left 1 bit */
+ l3_l4e = _mm_slli_epi32(l3_l4e, 1);
+ /* we need to mask out the reduntant bits */
+ l3_l4e = _mm_and_si128(l3_l4e, cksum_mask);
+
+ vlan0 = _mm_or_si128(vlan0, rss);
+ vlan0 = _mm_or_si128(vlan0, l3_l4e);
+
+ /* At this point, we have the 4 sets of flags in the low 16-bits
+ * of each 32-bit value in vlan0.
+ * We want to extract these, and merge them with the mbuf init data
+ * so we can do a single 16-byte 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.
+ */
+ rearm0 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(vlan0, 8), 0x10);
+ rearm1 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(vlan0, 4), 0x10);
+ rearm2 = _mm_blend_epi16(mbuf_init, vlan0, 0x10);
+ rearm3 = _mm_blend_epi16(mbuf_init, _mm_srli_si128(vlan0, 4), 0x10);
+
+ /* write the rearm data and the olflags in one write */
+ 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));
+ _mm_store_si128((__m128i *)&rx_pkts[0]->rearm_data, rearm0);
+ _mm_store_si128((__m128i *)&rx_pkts[1]->rearm_data, rearm1);
+ _mm_store_si128((__m128i *)&rx_pkts[2]->rearm_data, rearm2);
+ _mm_store_si128((__m128i *)&rx_pkts[3]->rearm_data, rearm3);
+}
+
+#define PKTLEN_SHIFT 10
+
+static inline void
+desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts)
+{
+ __m128i ptype0 = _mm_unpackhi_epi64(descs[0], descs[1]);
+ __m128i ptype1 = _mm_unpackhi_epi64(descs[2], descs[3]);
+ static const uint32_t type_table[UINT8_MAX + 1] __rte_cache_aligned = {
+ /* [0] reserved */
+ [1] = RTE_PTYPE_L2_ETHER,
+ /* [2] - [21] reserved */
+ [22] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_FRAG,
+ [23] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_NONFRAG,
+ [24] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_UDP,
+ /* [25] reserved */
+ [26] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_TCP,
+ [27] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_SCTP,
+ [28] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_ICMP,
+ /* All others reserved */
+ };
+
+ ptype0 = _mm_srli_epi64(ptype0, 30);
+ ptype1 = _mm_srli_epi64(ptype1, 30);
+
+ rx_pkts[0]->packet_type = type_table[_mm_extract_epi8(ptype0, 0)];
+ rx_pkts[1]->packet_type = type_table[_mm_extract_epi8(ptype0, 8)];
+ rx_pkts[2]->packet_type = type_table[_mm_extract_epi8(ptype1, 0)];
+ rx_pkts[3]->packet_type = type_table[_mm_extract_epi8(ptype1, 8)];
+}
+
+/* Notice:
+ * - nb_pkts < AVF_VPMD_DESCS_PER_LOOP, just return no packet
+ * - nb_pkts > AVF_VPMD_RX_MAX_BURST, only scan AVF_VPMD_RX_MAX_BURST
+ * numbers of DD bits
+ */
+static inline uint16_t
+_recv_raw_pkts_vec(struct avf_rx_queue *rxq, struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts, uint8_t *split_packet)
+{
+ volatile union avf_rx_desc *rxdp;
+ struct rte_mbuf **sw_ring;
+ uint16_t nb_pkts_recd;
+ int pos;
+ uint64_t var;
+ __m128i shuf_msk;
+
+ __m128i crc_adjust = _mm_set_epi16(
+ 0, 0, 0, /* ignore non-length fields */
+ -rxq->crc_len, /* sub crc on data_len */
+ 0, /* ignore high-16bits of pkt_len */
+ -rxq->crc_len, /* sub crc on pkt_len */
+ 0, 0 /* ignore pkt_type field */
+ );
+ /* compile-time check the above crc_adjust layout is correct.
+ * NOTE: the first field (lowest address) is given last in set_epi16
+ * call 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);
+ __m128i dd_check, eop_check;
+
+ /* nb_pkts shall be less equal than AVF_VPMD_RX_MAX_BURST */
+ nb_pkts = RTE_MIN(nb_pkts, AVF_VPMD_RX_MAX_BURST);
+
+ /* nb_pkts has to be floor-aligned to AVF_VPMD_DESCS_PER_LOOP */
+ nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, AVF_VPMD_DESCS_PER_LOOP);
+
+ /* Just the act of getting into the function from the application is
+ * going to cost about 7 cycles
+ */
+ rxdp = rxq->rx_ring + rxq->rx_tail;
+
+ rte_prefetch0(rxdp);
+
+ /* See if we need to rearm the RX queue - gives the prefetch a bit
+ * of time to act
+ */
+ if (rxq->rxrearm_nb > rxq->rx_free_thresh)
+ avf_rxq_rearm(rxq);
+
+ /* Before we start moving massive data around, check to see if
+ * there is actually a packet available
+ */
+ if (!(rxdp->wb.qword1.status_error_len &
+ rte_cpu_to_le_32(1 << AVF_RX_DESC_STATUS_DD_SHIFT)))
+ return 0;
+
+ /* 4 packets DD mask */
+ dd_check = _mm_set_epi64x(0x0000000100000001LL, 0x0000000100000001LL);
+
+ /* 4 packets EOP mask */
+ eop_check = _mm_set_epi64x(0x0000000200000002LL, 0x0000000200000002LL);
+
+ /* mask to shuffle from desc. to mbuf */
+ shuf_msk = _mm_set_epi8(
+ 7, 6, 5, 4, /* octet 4~7, 32bits rss */
+ 3, 2, /* octet 2~3, low 16 bits vlan_macip */
+ 15, 14, /* octet 15~14, 16 bits data_len */
+ 0xFF, 0xFF, /* skip high 16 bits pkt_len, zero out */
+ 15, 14, /* octet 15~14, low 16 bits pkt_len */
+ 0xFF, 0xFF, 0xFF, 0xFF /* pkt_type set as unknown */
+ );
+ /* Compile-time verify the shuffle mask
+ * NOTE: some field positions already verified above, but duplicated
+ * here for completeness in case of future modifications.
+ */
+ 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);
+
+ /* Cache is empty -> need to scan the buffer rings, but first move
+ * the next 'n' mbufs into the cache
+ */
+ sw_ring = &rxq->sw_ring[rxq->rx_tail];
+
+ /* A. load 4 packet in one loop
+ * [A*. mask out 4 unused dirty field in desc]
+ * B. copy 4 mbuf point from swring to rx_pkts
+ * C. calc the number of DD bits among the 4 packets
+ * [C*. extract the end-of-packet bit, if requested]
+ * D. fill info. from desc to mbuf
+ */
+
+ for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
+ pos += AVF_VPMD_DESCS_PER_LOOP,
+ rxdp += AVF_VPMD_DESCS_PER_LOOP) {
+ __m128i descs[AVF_VPMD_DESCS_PER_LOOP];
+ __m128i pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
+ __m128i zero, staterr, sterr_tmp1, sterr_tmp2;
+ /* 2 64 bit or 4 32 bit mbuf pointers in one XMM reg. */
+ __m128i mbp1;
+#if defined(RTE_ARCH_X86_64)
+ __m128i mbp2;
+#endif
+
+ /* B.1 load 2 (64 bit) or 4 (32 bit) mbuf points */
+ mbp1 = _mm_loadu_si128((__m128i *)&sw_ring[pos]);
+ /* Read desc statuses backwards to avoid race condition */
+ /* A.1 load 4 pkts desc */
+ descs[3] = _mm_loadu_si128((__m128i *)(rxdp + 3));
+ rte_compiler_barrier();
+
+ /* B.2 copy 2 64 bit or 4 32 bit mbuf point into rx_pkts */
+ _mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
+
+#if defined(RTE_ARCH_X86_64)
+ /* B.1 load 2 64 bit mbuf points */
+ mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos + 2]);
+#endif
+
+ descs[2] = _mm_loadu_si128((__m128i *)(rxdp + 2));
+ rte_compiler_barrier();
+ /* B.1 load 2 mbuf point */
+ descs[1] = _mm_loadu_si128((__m128i *)(rxdp + 1));
+ rte_compiler_barrier();
+ descs[0] = _mm_loadu_si128((__m128i *)(rxdp));
+
+#if defined(RTE_ARCH_X86_64)
+ /* B.2 copy 2 mbuf point into rx_pkts */
+ _mm_storeu_si128((__m128i *)&rx_pkts[pos + 2], mbp2);
+#endif
+
+ if (split_packet) {
+ rte_mbuf_prefetch_part2(rx_pkts[pos]);
+ rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
+ rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
+ rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
+ }
+
+ /* avoid compiler reorder optimization */
+ rte_compiler_barrier();
+
+ /* pkt 3,4 shift the pktlen field to be 16-bit aligned*/
+ const __m128i len3 = _mm_slli_epi32(descs[3], PKTLEN_SHIFT);
+ const __m128i len2 = _mm_slli_epi32(descs[2], PKTLEN_SHIFT);
+
+ /* merge the now-aligned packet length fields back in */
+ descs[3] = _mm_blend_epi16(descs[3], len3, 0x80);
+ descs[2] = _mm_blend_epi16(descs[2], len2, 0x80);
+
+ /* D.1 pkt 3,4 convert format from desc to pktmbuf */
+ pkt_mb4 = _mm_shuffle_epi8(descs[3], shuf_msk);
+ pkt_mb3 = _mm_shuffle_epi8(descs[2], shuf_msk);
+
+ /* C.1 4=>2 status err info only */
+ sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
+ sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
+
+ desc_to_olflags_v(rxq, descs, &rx_pkts[pos]);
+
+ /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
+ pkt_mb4 = _mm_add_epi16(pkt_mb4, crc_adjust);
+ pkt_mb3 = _mm_add_epi16(pkt_mb3, crc_adjust);
+
+ /* pkt 1,2 shift the pktlen field to be 16-bit aligned*/
+ const __m128i len1 = _mm_slli_epi32(descs[1], PKTLEN_SHIFT);
+ const __m128i len0 = _mm_slli_epi32(descs[0], PKTLEN_SHIFT);
+
+ /* merge the now-aligned packet length fields back in */
+ descs[1] = _mm_blend_epi16(descs[1], len1, 0x80);
+ descs[0] = _mm_blend_epi16(descs[0], len0, 0x80);
+
+ /* D.1 pkt 1,2 convert format from desc to pktmbuf */
+ pkt_mb2 = _mm_shuffle_epi8(descs[1], shuf_msk);
+ pkt_mb1 = _mm_shuffle_epi8(descs[0], shuf_msk);
+
+ /* C.2 get 4 pkts status err value */
+ zero = _mm_xor_si128(dd_check, dd_check);
+ staterr = _mm_unpacklo_epi32(sterr_tmp1, sterr_tmp2);
+
+ /* D.3 copy final 3,4 data to rx_pkts */
+ _mm_storeu_si128(
+ (void *)&rx_pkts[pos + 3]->rx_descriptor_fields1,
+ pkt_mb4);
+ _mm_storeu_si128(
+ (void *)&rx_pkts[pos + 2]->rx_descriptor_fields1,
+ pkt_mb3);
+
+ /* D.2 pkt 1,2 remove crc */
+ pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
+ pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
+
+ /* C* extract and record EOP bit */
+ if (split_packet) {
+ __m128i eop_shuf_mask = _mm_set_epi8(
+ 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF,
+ 0x04, 0x0C, 0x00, 0x08
+ );
+
+ /* and with mask to extract bits, flipping 1-0 */
+ __m128i eop_bits = _mm_andnot_si128(staterr, eop_check);
+ /* the staterr values are not in order, as the count
+ * count of dd bits doesn't care. However, for end of
+ * packet tracking, we do care, so shuffle. This also
+ * compresses the 32-bit values to 8-bit
+ */
+ eop_bits = _mm_shuffle_epi8(eop_bits, eop_shuf_mask);
+ /* store the resulting 32-bit value */
+ *(int *)split_packet = _mm_cvtsi128_si32(eop_bits);
+ split_packet += AVF_VPMD_DESCS_PER_LOOP;
+ }
+
+ /* C.3 calc available number of desc */
+ staterr = _mm_and_si128(staterr, dd_check);
+ staterr = _mm_packs_epi32(staterr, zero);
+
+ /* D.3 copy final 1,2 data to rx_pkts */
+ _mm_storeu_si128(
+ (void *)&rx_pkts[pos + 1]->rx_descriptor_fields1,
+ pkt_mb2);
+ _mm_storeu_si128((void *)&rx_pkts[pos]->rx_descriptor_fields1,
+ pkt_mb1);
+ desc_to_ptype_v(descs, &rx_pkts[pos]);
+ /* C.4 calc avaialbe number of desc */
+ var = __builtin_popcountll(_mm_cvtsi128_si64(staterr));
+ nb_pkts_recd += var;
+ if (likely(var != AVF_VPMD_DESCS_PER_LOOP))
+ break;
+ }
+
+ /* Update our internal tail pointer */
+ rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_pkts_recd);
+ rxq->rx_tail = (uint16_t)(rxq->rx_tail & (rxq->nb_rx_desc - 1));
+ rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
+
+ return nb_pkts_recd;
+}
+
+/* Notice:
+ * - nb_pkts < AVF_DESCS_PER_LOOP, just return no packet
+ * - nb_pkts > AVF_VPMD_RX_MAX_BURST, only scan AVF_VPMD_RX_MAX_BURST
+ * numbers of DD bits
+ */
+uint16_t
+avf_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ return _recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL);
+}
+
+/* vPMD receive routine that reassembles scattered packets
+ * Notice:
+ * - nb_pkts < AVF_VPMD_DESCS_PER_LOOP, just return no packet
+ * - nb_pkts > VPMD_RX_MAX_BURST, only scan AVF_VPMD_RX_MAX_BURST
+ * numbers of DD bits
+ */
+uint16_t
+avf_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ struct avf_rx_queue *rxq = rx_queue;
+ uint8_t split_flags[AVF_VPMD_RX_MAX_BURST] = {0};
+ unsigned int i = 0;
+
+ /* get some new buffers */
+ uint16_t nb_bufs = _recv_raw_pkts_vec(rxq, rx_pkts, nb_pkts,
+ split_flags);
+ if (nb_bufs == 0)
+ return 0;
+
+ /* happy day case, full burst + no packets to be joined */
+ const uint64_t *split_fl64 = (uint64_t *)split_flags;
+
+ if (!rxq->pkt_first_seg &&
+ split_fl64[0] == 0 && split_fl64[1] == 0 &&
+ split_fl64[2] == 0 && split_fl64[3] == 0)
+ return nb_bufs;
+
+ /* reassemble any packets that need reassembly*/
+ if (!rxq->pkt_first_seg) {
+ /* find the first split flag, and only reassemble then*/
+ while (i < nb_bufs && !split_flags[i])
+ i++;
+ if (i == nb_bufs)
+ return nb_bufs;
+ }
+ return i + reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
+ &split_flags[i]);
+}
+
+static inline void
+vtx1(volatile struct avf_tx_desc *txdp, struct rte_mbuf *pkt, uint64_t flags)
+{
+ uint64_t high_qw =
+ (AVF_TX_DESC_DTYPE_DATA |
+ ((uint64_t)flags << AVF_TXD_QW1_CMD_SHIFT) |
+ ((uint64_t)pkt->data_len <<
+ AVF_TXD_QW1_TX_BUF_SZ_SHIFT));
+
+ __m128i descriptor = _mm_set_epi64x(high_qw,
+ pkt->buf_iova + pkt->data_off);
+ _mm_store_si128((__m128i *)txdp, descriptor);
+}
+
+static inline void
+avf_vtx(volatile struct avf_tx_desc *txdp, struct rte_mbuf **pkt,
+ uint16_t nb_pkts, uint64_t flags)
+{
+ int i;
+
+ for (i = 0; i < nb_pkts; ++i, ++txdp, ++pkt)
+ vtx1(txdp, *pkt, flags);
+}
+
+uint16_t
+avf_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
+ uint16_t nb_pkts)
+{
+ struct avf_tx_queue *txq = (struct avf_tx_queue *)tx_queue;
+ volatile struct avf_tx_desc *txdp;
+ struct avf_tx_entry *txep;
+ uint16_t n, nb_commit, tx_id;
+ uint64_t flags = AVF_TX_DESC_CMD_EOP | 0x04; /* bit 2 must be set */
+ uint64_t rs = AVF_TX_DESC_CMD_RS | flags;
+ int i;
+
+ /* cross rx_thresh boundary is not allowed */
+ nb_pkts = RTE_MIN(nb_pkts, txq->rs_thresh);
+
+ if (txq->nb_free < txq->free_thresh)
+ avf_tx_free_bufs(txq);
+
+ nb_pkts = (uint16_t)RTE_MIN(txq->nb_free, nb_pkts);
+ if (unlikely(nb_pkts == 0))
+ return 0;
+ nb_commit = nb_pkts;
+
+ tx_id = txq->tx_tail;
+ txdp = &txq->tx_ring[tx_id];
+ txep = &txq->sw_ring[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(txep, tx_pkts, n);
+
+ for (i = 0; i < n - 1; ++i, ++tx_pkts, ++txdp)
+ vtx1(txdp, *tx_pkts, flags);
+
+ vtx1(txdp, *tx_pkts++, rs);
+
+ nb_commit = (uint16_t)(nb_commit - n);
+
+ tx_id = 0;
+ txq->next_rs = (uint16_t)(txq->rs_thresh - 1);
+
+ /* avoid reach the end of ring */
+ txdp = &txq->tx_ring[tx_id];
+ txep = &txq->sw_ring[tx_id];
+ }
+
+ tx_backlog_entry(txep, tx_pkts, nb_commit);
+
+ avf_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].cmd_type_offset_bsz |=
+ rte_cpu_to_le_64(((uint64_t)AVF_TX_DESC_CMD_RS) <<
+ AVF_TXD_QW1_CMD_SHIFT);
+ txq->next_rs =
+ (uint16_t)(txq->next_rs + txq->rs_thresh);
+ }
+
+ txq->tx_tail = tx_id;
+
+ PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_pkts=%u",
+ txq->port_id, txq->queue_id, tx_id, nb_pkts);
+
+ AVF_PCI_REG_WRITE(txq->qtx_tail, txq->tx_tail);
+
+ return nb_pkts;
+}
+
+void __attribute__((cold))
+avf_rx_queue_release_mbufs_sse(struct avf_rx_queue *rxq)
+{
+ _avf_rx_queue_release_mbufs_vec(rxq);
+}
+
+static void __attribute__((cold))
+avf_tx_queue_release_mbufs_sse(struct avf_tx_queue *txq)
+{
+ _avf_tx_queue_release_mbufs_vec(txq);
+}
+
+static const struct avf_rxq_ops sse_vec_rxq_ops = {
+ .release_mbufs = avf_rx_queue_release_mbufs_sse,
+};
+
+static const struct avf_txq_ops sse_vec_txq_ops = {
+ .release_mbufs = avf_tx_queue_release_mbufs_sse,
+};
+
+int __attribute__((cold))
+avf_txq_vec_setup(struct avf_tx_queue *txq)
+{
+ txq->ops = &sse_vec_txq_ops;
+ return 0;
+}
+
+int __attribute__((cold))
+avf_rxq_vec_setup(struct avf_rx_queue *rxq)
+{
+ rxq->ops = &sse_vec_rxq_ops;
+ return avf_rxq_vec_setup_default(rxq);
+}
Code Review / deb_dpdk.git / blobdiff