diff options
Diffstat (limited to 'src/dpdk/drivers/net/i40e/i40e_rxtx_vec_neon.c')
| -rw-r--r-- | src/dpdk/drivers/net/i40e/i40e_rxtx_vec_neon.c | 614 |
1 files changed, 614 insertions, 0 deletions
diff --git a/src/dpdk/drivers/net/i40e/i40e_rxtx_vec_neon.c b/src/dpdk/drivers/net/i40e/i40e_rxtx_vec_neon.c new file mode 100644 index 00000000..011c54e0 --- /dev/null +++ b/src/dpdk/drivers/net/i40e/i40e_rxtx_vec_neon.c @@ -0,0 +1,614 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2015 Intel Corporation. All rights reserved. + * Copyright(c) 2016, Linaro Limited + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <stdint.h> +#include <rte_ethdev.h> +#include <rte_malloc.h> + +#include "base/i40e_prototype.h" +#include "base/i40e_type.h" +#include "i40e_ethdev.h" +#include "i40e_rxtx.h" +#include "i40e_rxtx_vec_common.h" + +#include <arm_neon.h> + +#pragma GCC diagnostic ignored "-Wcast-qual" + +static inline void +i40e_rxq_rearm(struct i40e_rx_queue *rxq) +{ + int i; + uint16_t rx_id; + volatile union i40e_rx_desc *rxdp; + struct i40e_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start]; + struct rte_mbuf *mb0, *mb1; + uint64x2_t dma_addr0, dma_addr1; + uint64x2_t zero = vdupq_n_u64(0); + uint64_t paddr; + uint8x8_t p; + + rxdp = rxq->rx_ring + rxq->rxrearm_start; + + /* Pull 'n' more MBUFs into the software ring */ + if (unlikely(rte_mempool_get_bulk(rxq->mp, + (void *)rxep, + RTE_I40E_RXQ_REARM_THRESH) < 0)) { + if (rxq->rxrearm_nb + RTE_I40E_RXQ_REARM_THRESH >= + rxq->nb_rx_desc) { + for (i = 0; i < RTE_I40E_DESCS_PER_LOOP; i++) { + rxep[i].mbuf = &rxq->fake_mbuf; + vst1q_u64((uint64_t *)&rxdp[i].read, zero); + } + } + rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed += + RTE_I40E_RXQ_REARM_THRESH; + return; + } + + p = vld1_u8((uint8_t *)&rxq->mbuf_initializer); + + /* Initialize the mbufs in vector, process 2 mbufs in one loop */ + for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; i += 2, rxep += 2) { + mb0 = rxep[0].mbuf; + mb1 = rxep[1].mbuf; + + /* Flush mbuf with pkt template. + * Data to be rearmed is 6 bytes long. + * Though, RX will overwrite ol_flags that are coming next + * anyway. So overwrite whole 8 bytes with one load: + * 6 bytes of rearm_data plus first 2 bytes of ol_flags. + */ + vst1_u8((uint8_t *)&mb0->rearm_data, p); + paddr = mb0->buf_physaddr + RTE_PKTMBUF_HEADROOM; + dma_addr0 = vdupq_n_u64(paddr); + + /* flush desc with pa dma_addr */ + vst1q_u64((uint64_t *)&rxdp++->read, dma_addr0); + + vst1_u8((uint8_t *)&mb1->rearm_data, p); + paddr = mb1->buf_physaddr + RTE_PKTMBUF_HEADROOM; + dma_addr1 = vdupq_n_u64(paddr); + vst1q_u64((uint64_t *)&rxdp++->read, dma_addr1); + } + + rxq->rxrearm_start += RTE_I40E_RXQ_REARM_THRESH; + if (rxq->rxrearm_start >= rxq->nb_rx_desc) + rxq->rxrearm_start = 0; + + rxq->rxrearm_nb -= RTE_I40E_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 */ + I40E_PCI_REG_WRITE(rxq->qrx_tail, rx_id); +} + +/* Handling the offload flags (olflags) field takes computation + * time when receiving packets. Therefore we provide a flag to disable + * the processing of the olflags field when they are not needed. This + * gives improved performance, at the cost of losing the offload info + * in the received packet + */ +#ifdef RTE_LIBRTE_I40E_RX_OLFLAGS_ENABLE + +static inline void +desc_to_olflags_v(uint64x2_t descs[4], struct rte_mbuf **rx_pkts) +{ + uint32x4_t 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 uint32x4_t rss_vlan_msk = { + 0x1c03804, 0x1c03804, 0x1c03804, 0x1c03804}; + + /* map rss and vlan type to rss hash and vlan flag */ + const uint8x16_t vlan_flags = { + 0, 0, 0, 0, + PKT_RX_VLAN_PKT | PKT_RX_VLAN_STRIPPED, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0}; + + const uint8x16_t rss_flags = { + 0, PKT_RX_FDIR, 0, 0, + 0, 0, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH | PKT_RX_FDIR, + 0, 0, 0, 0, + 0, 0, 0, 0}; + + const uint8x16_t l3_l4e_flags = { + 0, + PKT_RX_IP_CKSUM_BAD, + PKT_RX_L4_CKSUM_BAD, + PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD, + PKT_RX_EIP_CKSUM_BAD, + PKT_RX_EIP_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD, + PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD, + PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD, + 0, 0, 0, 0, 0, 0, 0, 0}; + + vlan0 = vzipq_u32(vreinterpretq_u32_u64(descs[0]), + vreinterpretq_u32_u64(descs[2])).val[1]; + vlan1 = vzipq_u32(vreinterpretq_u32_u64(descs[1]), + vreinterpretq_u32_u64(descs[3])).val[1]; + vlan0 = vzipq_u32(vlan0, vlan1).val[0]; + + vlan1 = vandq_u32(vlan0, rss_vlan_msk); + vlan0 = vreinterpretq_u32_u8(vqtbl1q_u8(vlan_flags, + vreinterpretq_u8_u32(vlan1))); + + rss = vshrq_n_u32(vlan1, 11); + rss = vreinterpretq_u32_u8(vqtbl1q_u8(rss_flags, + vreinterpretq_u8_u32(rss))); + + l3_l4e = vshrq_n_u32(vlan1, 22); + l3_l4e = vreinterpretq_u32_u8(vqtbl1q_u8(l3_l4e_flags, + vreinterpretq_u8_u32(l3_l4e))); + + + vlan0 = vorrq_u32(vlan0, rss); + vlan0 = vorrq_u32(vlan0, l3_l4e); + + rx_pkts[0]->ol_flags = vgetq_lane_u32(vlan0, 0); + rx_pkts[1]->ol_flags = vgetq_lane_u32(vlan0, 1); + rx_pkts[2]->ol_flags = vgetq_lane_u32(vlan0, 2); + rx_pkts[3]->ol_flags = vgetq_lane_u32(vlan0, 3); +} +#else +#define desc_to_olflags_v(descs, rx_pkts) do {} while (0) +#endif + +#define PKTLEN_SHIFT 10 + +#define I40E_VPMD_DESC_DD_MASK 0x0001000100010001ULL + +static inline void +desc_to_ptype_v(uint64x2_t descs[4], struct rte_mbuf **rx_pkts) +{ + int i; + uint8_t ptype; + uint8x16_t tmp; + + for (i = 0; i < 4; i++) { + tmp = vreinterpretq_u8_u64(vshrq_n_u64(descs[i], 30)); + ptype = vgetq_lane_u8(tmp, 8); + rx_pkts[0]->packet_type = i40e_rxd_pkt_type_mapping(ptype); + } + +} + + /* + * Notice: + * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet + * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST + * numbers of DD bits + */ +static inline uint16_t +_recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts, uint8_t *split_packet) +{ + volatile union i40e_rx_desc *rxdp; + struct i40e_rx_entry *sw_ring; + uint16_t nb_pkts_recd; + int pos; + uint64_t var; + + /* mask to shuffle from desc. to mbuf */ + uint8x16_t shuf_msk = { + 0xFF, 0xFF, /* pkt_type set as unknown */ + 0xFF, 0xFF, /* pkt_type set as unknown */ + 14, 15, /* octet 15~14, low 16 bits pkt_len */ + 0xFF, 0xFF, /* skip high 16 bits pkt_len, zero out */ + 14, 15, /* octet 15~14, 16 bits data_len */ + 2, 3, /* octet 2~3, low 16 bits vlan_macip */ + 4, 5, 6, 7 /* octet 4~7, 32bits rss */ + }; + + uint8x16_t eop_check = { + 0x02, 0x00, 0x02, 0x00, + 0x02, 0x00, 0x02, 0x00, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00 + }; + + uint16x8_t crc_adjust = { + 0, 0, /* ignore pkt_type field */ + rxq->crc_len, /* sub crc on pkt_len */ + 0, /* ignore high-16bits of pkt_len */ + rxq->crc_len, /* sub crc on data_len */ + 0, 0, 0 /* ignore non-length fields */ + }; + + /* nb_pkts shall be less equal than RTE_I40E_MAX_RX_BURST */ + nb_pkts = RTE_MIN(nb_pkts, RTE_I40E_MAX_RX_BURST); + + /* nb_pkts has to be floor-aligned to RTE_I40E_DESCS_PER_LOOP */ + nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_I40E_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_prefetch_non_temporal(rxdp); + + /* See if we need to rearm the RX queue - gives the prefetch a bit + * of time to act + */ + if (rxq->rxrearm_nb > RTE_I40E_RXQ_REARM_THRESH) + i40e_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 << I40E_RX_DESC_STATUS_DD_SHIFT))) + return 0; + + /* 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 += RTE_I40E_DESCS_PER_LOOP, + rxdp += RTE_I40E_DESCS_PER_LOOP) { + uint64x2_t descs[RTE_I40E_DESCS_PER_LOOP]; + uint8x16_t pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4; + uint16x8x2_t sterr_tmp1, sterr_tmp2; + uint64x2_t mbp1, mbp2; + uint16x8_t staterr; + uint16x8_t tmp; + uint64_t stat; + + int32x4_t len_shl = {0, 0, 0, PKTLEN_SHIFT}; + + /* B.1 load 1 mbuf point */ + mbp1 = vld1q_u64((uint64_t *)&sw_ring[pos]); + /* Read desc statuses backwards to avoid race condition */ + /* A.1 load 4 pkts desc */ + descs[3] = vld1q_u64((uint64_t *)(rxdp + 3)); + rte_rmb(); + + /* B.2 copy 2 mbuf point into rx_pkts */ + vst1q_u64((uint64_t *)&rx_pkts[pos], mbp1); + + /* B.1 load 1 mbuf point */ + mbp2 = vld1q_u64((uint64_t *)&sw_ring[pos + 2]); + + descs[2] = vld1q_u64((uint64_t *)(rxdp + 2)); + /* B.1 load 2 mbuf point */ + descs[1] = vld1q_u64((uint64_t *)(rxdp + 1)); + descs[0] = vld1q_u64((uint64_t *)(rxdp)); + + /* B.2 copy 2 mbuf point into rx_pkts */ + vst1q_u64((uint64_t *)&rx_pkts[pos + 2], mbp2); + + 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*/ + uint32x4_t len3 = vshlq_u32(vreinterpretq_u32_u64(descs[3]), + len_shl); + descs[3] = vreinterpretq_u64_u32(len3); + uint32x4_t len2 = vshlq_u32(vreinterpretq_u32_u64(descs[2]), + len_shl); + descs[2] = vreinterpretq_u64_u32(len2); + + /* D.1 pkt 3,4 convert format from desc to pktmbuf */ + pkt_mb4 = vqtbl1q_u8(vreinterpretq_u8_u64(descs[3]), shuf_msk); + pkt_mb3 = vqtbl1q_u8(vreinterpretq_u8_u64(descs[2]), shuf_msk); + + /* C.1 4=>2 filter staterr info only */ + sterr_tmp2 = vzipq_u16(vreinterpretq_u16_u64(descs[1]), + vreinterpretq_u16_u64(descs[3])); + /* C.1 4=>2 filter staterr info only */ + sterr_tmp1 = vzipq_u16(vreinterpretq_u16_u64(descs[0]), + vreinterpretq_u16_u64(descs[2])); + + /* C.2 get 4 pkts staterr value */ + staterr = vzipq_u16(sterr_tmp1.val[1], + sterr_tmp2.val[1]).val[0]; + stat = vgetq_lane_u64(vreinterpretq_u64_u16(staterr), 0); + + desc_to_olflags_v(descs, &rx_pkts[pos]); + + /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */ + tmp = vsubq_u16(vreinterpretq_u16_u8(pkt_mb4), crc_adjust); + pkt_mb4 = vreinterpretq_u8_u16(tmp); + tmp = vsubq_u16(vreinterpretq_u16_u8(pkt_mb3), crc_adjust); + pkt_mb3 = vreinterpretq_u8_u16(tmp); + + /* pkt 1,2 shift the pktlen field to be 16-bit aligned*/ + uint32x4_t len1 = vshlq_u32(vreinterpretq_u32_u64(descs[1]), + len_shl); + descs[1] = vreinterpretq_u64_u32(len1); + uint32x4_t len0 = vshlq_u32(vreinterpretq_u32_u64(descs[0]), + len_shl); + descs[0] = vreinterpretq_u64_u32(len0); + + /* D.1 pkt 1,2 convert format from desc to pktmbuf */ + pkt_mb2 = vqtbl1q_u8(vreinterpretq_u8_u64(descs[1]), shuf_msk); + pkt_mb1 = vqtbl1q_u8(vreinterpretq_u8_u64(descs[0]), shuf_msk); + + /* D.3 copy final 3,4 data to rx_pkts */ + vst1q_u8((void *)&rx_pkts[pos + 3]->rx_descriptor_fields1, + pkt_mb4); + vst1q_u8((void *)&rx_pkts[pos + 2]->rx_descriptor_fields1, + pkt_mb3); + + /* D.2 pkt 1,2 set in_port/nb_seg and remove crc */ + tmp = vsubq_u16(vreinterpretq_u16_u8(pkt_mb2), crc_adjust); + pkt_mb2 = vreinterpretq_u8_u16(tmp); + tmp = vsubq_u16(vreinterpretq_u16_u8(pkt_mb1), crc_adjust); + pkt_mb1 = vreinterpretq_u8_u16(tmp); + + /* C* extract and record EOP bit */ + if (split_packet) { + uint8x16_t eop_shuf_mask = { + 0x00, 0x02, 0x04, 0x06, + 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF}; + uint8x16_t eop_bits; + + /* and with mask to extract bits, flipping 1-0 */ + eop_bits = vmvnq_u8(vreinterpretq_u8_u16(staterr)); + eop_bits = vandq_u8(eop_bits, 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 = vqtbl1q_u8(eop_bits, eop_shuf_mask); + + /* store the resulting 32-bit value */ + vst1q_lane_u32((uint32_t *)split_packet, + vreinterpretq_u32_u8(eop_bits), 0); + split_packet += RTE_I40E_DESCS_PER_LOOP; + + /* zero-out next pointers */ + rx_pkts[pos]->next = NULL; + rx_pkts[pos + 1]->next = NULL; + rx_pkts[pos + 2]->next = NULL; + rx_pkts[pos + 3]->next = NULL; + } + + rte_prefetch_non_temporal(rxdp + RTE_I40E_DESCS_PER_LOOP); + + /* D.3 copy final 1,2 data to rx_pkts */ + vst1q_u8((void *)&rx_pkts[pos + 1]->rx_descriptor_fields1, + pkt_mb2); + vst1q_u8((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(stat & I40E_VPMD_DESC_DD_MASK); + nb_pkts_recd += var; + if (likely(var != RTE_I40E_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 < RTE_I40E_DESCS_PER_LOOP, just return no packet + * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST + * numbers of DD bits + */ +uint16_t +i40e_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 < RTE_I40E_DESCS_PER_LOOP, just return no packet + * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST + * numbers of DD bits + */ +uint16_t +i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + + struct i40e_rx_queue *rxq = rx_queue; + uint8_t split_flags[RTE_I40E_VPMD_RX_BURST] = {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 == NULL && + 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*/ + unsigned i = 0; + + if (rxq->pkt_first_seg == NULL) { + /* 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 i40e_tx_desc *txdp, + struct rte_mbuf *pkt, uint64_t flags) +{ + uint64_t high_qw = (I40E_TX_DESC_DTYPE_DATA | + ((uint64_t)flags << I40E_TXD_QW1_CMD_SHIFT) | + ((uint64_t)pkt->data_len << I40E_TXD_QW1_TX_BUF_SZ_SHIFT)); + + uint64x2_t descriptor = {pkt->buf_physaddr + pkt->data_off, high_qw}; + vst1q_u64((uint64_t *)txdp, descriptor); +} + +static inline void +vtx(volatile struct i40e_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 +i40e_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts, + uint16_t nb_pkts) +{ + struct i40e_tx_queue *txq = (struct i40e_tx_queue *)tx_queue; + volatile struct i40e_tx_desc *txdp; + struct i40e_tx_entry *txep; + uint16_t n, nb_commit, tx_id; + uint64_t flags = I40E_TD_CMD; + uint64_t rs = I40E_TX_DESC_CMD_RS | I40E_TD_CMD; + int i; + + /* cross rx_thresh boundary is not allowed */ + nb_pkts = RTE_MIN(nb_pkts, txq->tx_rs_thresh); + + if (txq->nb_tx_free < txq->tx_free_thresh) + i40e_tx_free_bufs(txq); + + nb_commit = nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts); + if (unlikely(nb_pkts == 0)) + return 0; + + tx_id = txq->tx_tail; + txdp = &txq->tx_ring[tx_id]; + txep = &txq->sw_ring[tx_id]; + + txq->nb_tx_free = (uint16_t)(txq->nb_tx_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->tx_next_rs = (uint16_t)(txq->tx_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); + + vtx(txdp, tx_pkts, nb_commit, flags); + + tx_id = (uint16_t)(tx_id + nb_commit); + if (tx_id > txq->tx_next_rs) { + txq->tx_ring[txq->tx_next_rs].cmd_type_offset_bsz |= + rte_cpu_to_le_64(((uint64_t)I40E_TX_DESC_CMD_RS) << + I40E_TXD_QW1_CMD_SHIFT); + txq->tx_next_rs = + (uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh); + } + + txq->tx_tail = tx_id; + + I40E_PCI_REG_WRITE(txq->qtx_tail, txq->tx_tail); + + return nb_pkts; +} + +void __attribute__((cold)) +i40e_rx_queue_release_mbufs_vec(struct i40e_rx_queue *rxq) +{ + _i40e_rx_queue_release_mbufs_vec(rxq); +} + +int __attribute__((cold)) +i40e_rxq_vec_setup(struct i40e_rx_queue *rxq) +{ + return i40e_rxq_vec_setup_default(rxq); +} + +int __attribute__((cold)) +i40e_txq_vec_setup(struct i40e_tx_queue __rte_unused *txq) +{ + return 0; +} + +int __attribute__((cold)) +i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev) +{ + return i40e_rx_vec_dev_conf_condition_check_default(dev); +} |