+++ /dev/null
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
- * 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 <tmmintrin.h>
-
-#ifndef __INTEL_COMPILER
-#pragma GCC diagnostic ignored "-Wcast-qual"
-#endif
-
-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;
- __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 *)rxep,
- RTE_I40E_RXQ_REARM_THRESH) < 0) {
- if (rxq->rxrearm_nb + RTE_I40E_RXQ_REARM_THRESH >=
- rxq->nb_rx_desc) {
- dma_addr0 = _mm_setzero_si128();
- for (i = 0; i < RTE_I40E_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 +=
- RTE_I40E_RXQ_REARM_THRESH;
- return;
- }
-
- /* Initialize the mbufs in vector, process 2 mbufs in one loop */
- for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; i += 2, rxep += 2) {
- __m128i vaddr0, vaddr1;
- uintptr_t p0, p1;
-
- 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.
- */
- p0 = (uintptr_t)&mb0->rearm_data;
- *(uint64_t *)p0 = rxq->mbuf_initializer;
- p1 = (uintptr_t)&mb1->rearm_data;
- *(uint64_t *)p1 = rxq->mbuf_initializer;
-
- /* load buf_addr(lo 64bit) and buf_physaddr(hi 64bit) */
- 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 += 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(__m128i descs[4], struct rte_mbuf **rx_pkts)
-{
- __m128i vlan0, vlan1, rss;
- union {
- uint16_t e[4];
- uint64_t dword;
- } vol;
-
- /* 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_epi16(
- 0x0000, 0x0000, 0x0000, 0x0000,
- 0x3804, 0x3804, 0x3804, 0x3804);
-
- /* 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 | 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);
-
- vlan0 = _mm_unpackhi_epi16(descs[0], descs[1]);
- vlan1 = _mm_unpackhi_epi16(descs[2], descs[3]);
- vlan0 = _mm_unpacklo_epi32(vlan0, vlan1);
-
- vlan1 = _mm_and_si128(vlan0, rss_vlan_msk);
- vlan0 = _mm_shuffle_epi8(vlan_flags, vlan1);
-
- rss = _mm_srli_epi16(vlan1, 11);
- rss = _mm_shuffle_epi8(rss_flags, rss);
-
- vlan0 = _mm_or_si128(vlan0, rss);
- vol.dword = _mm_cvtsi128_si64(vlan0);
-
- rx_pkts[0]->ol_flags = vol.e[0];
- rx_pkts[1]->ol_flags = vol.e[1];
- rx_pkts[2]->ol_flags = vol.e[2];
- rx_pkts[3]->ol_flags = vol.e[3];
-}
-#else
-#define desc_to_olflags_v(desc, rx_pkts) do {} while (0)
-#endif
-
-#define PKTLEN_SHIFT 10
-
- /*
- * 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;
- __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 */
- );
- __m128i dd_check, eop_check;
-
- /* 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;
-
- _mm_prefetch((const void *)rxdp, _MM_HINT_T0);
-
- /* 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;
-
- /* 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, /* pkt_type set as unknown */
- 0xFF, 0xFF /*pkt_type set as unknown */
- );
-
- /* 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) {
- __m128i descs[RTE_I40E_DESCS_PER_LOOP];
- __m128i pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
- __m128i zero, staterr, sterr_tmp1, sterr_tmp2;
- __m128i mbp1, mbp2; /* two mbuf pointer in one XMM reg. */
-
- /* B.1 load 1 mbuf point */
- 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 mbuf point into rx_pkts */
- _mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
-
- /* B.1 load 1 mbuf point */
- mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos+2]);
-
- 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));
-
- /* B.2 copy 2 mbuf point into rx_pkts */
- _mm_storeu_si128((__m128i *)&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*/
- 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 filter staterr info only */
- sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
- /* C.1 4=>2 filter staterr info only */
- sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
-
- desc_to_olflags_v(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 staterr 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 set in_port/nb_seg and 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 += 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;
- }
-
- /* 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);
- /* C.4 calc avaialbe number of desc */
- var = __builtin_popcountll(_mm_cvtsi128_si64(staterr));
- 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);
-}
-
-static inline uint16_t
-reassemble_packets(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_bufs,
- uint16_t nb_bufs, uint8_t *split_flags)
-{
- struct rte_mbuf *pkts[RTE_I40E_VPMD_RX_BURST]; /*finished pkts*/
- struct rte_mbuf *start = rxq->pkt_first_seg;
- struct rte_mbuf *end = rxq->pkt_last_seg;
- unsigned pkt_idx, buf_idx;
-
- for (buf_idx = 0, pkt_idx = 0; buf_idx < nb_bufs; buf_idx++) {
- if (end != NULL) {
- /* 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->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;
-
- while (secondlast->next != end)
- secondlast = secondlast->next;
- secondlast->data_len -= (rxq->crc_len -
- end->data_len);
- secondlast->next = NULL;
- rte_pktmbuf_free_seg(end);
- end = secondlast;
- }
- pkts[pkt_idx++] = start;
- start = 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;
- }
- end = start = rx_bufs[buf_idx];
- 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;
- memcpy(rx_bufs, pkts, pkt_idx * (sizeof(*pkts)));
- return pkt_idx;
-}
-
- /* 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));
-
- __m128i descriptor = _mm_set_epi64x(high_qw,
- pkt->buf_physaddr + pkt->data_off);
- _mm_store_si128((__m128i *)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);
-}
-
-static inline int __attribute__((always_inline))
-i40e_tx_free_bufs(struct i40e_tx_queue *txq)
-{
- struct i40e_tx_entry *txep;
- uint32_t n;
- uint32_t i;
- int nb_free = 0;
- struct rte_mbuf *m, *free[RTE_I40E_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(I40E_TXD_QW1_DTYPE_MASK)) !=
- rte_cpu_to_le_64(I40E_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 != 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);
- }
- }
-
- /* 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 inline void __attribute__((always_inline))
-tx_backlog_entry(struct i40e_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];
-}
-
-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)
-{
- const unsigned mask = rxq->nb_rx_desc - 1;
- unsigned 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].mbuf != NULL)
- 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 != NULL)
- 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);
-}
-
-int __attribute__((cold))
-i40e_rxq_vec_setup(struct i40e_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 __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)
-{
-#ifndef RTE_LIBRTE_IEEE1588
- struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
- struct rte_fdir_conf *fconf = &dev->data->dev_conf.fdir_conf;
-
- /* need SSE4.1 support */
- if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_SSE4_1))
- return -1;
-
-#ifndef RTE_LIBRTE_I40E_RX_OLFLAGS_ENABLE
- /* whithout rx ol_flags, no VP flag report */
- if (rxmode->hw_vlan_strip != 0 ||
- rxmode->hw_vlan_extend != 0)
- return -1;
-#endif
-
- /* no fdir support */
- if (fconf->mode != RTE_FDIR_MODE_NONE)
- return -1;
-
- /* - no csum error report support
- * - no header split support
- */
- if (rxmode->hw_ip_checksum == 1 ||
- rxmode->header_split == 1)
- return -1;
-
- return 0;
-#else
- RTE_SET_USED(dev);
- return -1;
-#endif
-}
Code Review / deb_dpdk.git / blobdiff