2f9b171503
Fixes: cf4b4708a8
(ixgbe: improve slow-path perf with vector scattered Rx)
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
884 lines
26 KiB
C
884 lines
26 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdint.h>
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#include <rte_ethdev.h>
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#include <rte_malloc.h>
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#include "ixgbe_ethdev.h"
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#include "ixgbe_rxtx.h"
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#include <tmmintrin.h>
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#ifndef __INTEL_COMPILER
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#pragma GCC diagnostic ignored "-Wcast-qual"
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#endif
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static inline void
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ixgbe_rxq_rearm(struct ixgbe_rx_queue *rxq)
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{
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int i;
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uint16_t rx_id;
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volatile union ixgbe_adv_rx_desc *rxdp;
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struct ixgbe_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start];
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struct rte_mbuf *mb0, *mb1;
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__m128i hdr_room = _mm_set_epi64x(RTE_PKTMBUF_HEADROOM,
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RTE_PKTMBUF_HEADROOM);
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__m128i dma_addr0, dma_addr1;
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rxdp = rxq->rx_ring + rxq->rxrearm_start;
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/* Pull 'n' more MBUFs into the software ring */
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if (rte_mempool_get_bulk(rxq->mb_pool,
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(void *)rxep,
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RTE_IXGBE_RXQ_REARM_THRESH) < 0) {
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if (rxq->rxrearm_nb + RTE_IXGBE_RXQ_REARM_THRESH >=
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rxq->nb_rx_desc) {
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dma_addr0 = _mm_setzero_si128();
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for (i = 0; i < RTE_IXGBE_DESCS_PER_LOOP; i++) {
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rxep[i].mbuf = &rxq->fake_mbuf;
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_mm_store_si128((__m128i *)&rxdp[i].read,
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dma_addr0);
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}
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}
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rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
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RTE_IXGBE_RXQ_REARM_THRESH;
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return;
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}
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/* Initialize the mbufs in vector, process 2 mbufs in one loop */
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for (i = 0; i < RTE_IXGBE_RXQ_REARM_THRESH; i += 2, rxep += 2) {
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__m128i vaddr0, vaddr1;
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uintptr_t p0, p1;
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mb0 = rxep[0].mbuf;
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mb1 = rxep[1].mbuf;
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/*
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* Flush mbuf with pkt template.
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* Data to be rearmed is 6 bytes long.
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* Though, RX will overwrite ol_flags that are coming next
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* anyway. So overwrite whole 8 bytes with one load:
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* 6 bytes of rearm_data plus first 2 bytes of ol_flags.
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*/
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p0 = (uintptr_t)&mb0->rearm_data;
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*(uint64_t *)p0 = rxq->mbuf_initializer;
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p1 = (uintptr_t)&mb1->rearm_data;
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*(uint64_t *)p1 = rxq->mbuf_initializer;
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/* load buf_addr(lo 64bit) and buf_physaddr(hi 64bit) */
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vaddr0 = _mm_loadu_si128((__m128i *)&(mb0->buf_addr));
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vaddr1 = _mm_loadu_si128((__m128i *)&(mb1->buf_addr));
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/* convert pa to dma_addr hdr/data */
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dma_addr0 = _mm_unpackhi_epi64(vaddr0, vaddr0);
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dma_addr1 = _mm_unpackhi_epi64(vaddr1, vaddr1);
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/* add headroom to pa values */
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dma_addr0 = _mm_add_epi64(dma_addr0, hdr_room);
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dma_addr1 = _mm_add_epi64(dma_addr1, hdr_room);
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/* flush desc with pa dma_addr */
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_mm_store_si128((__m128i *)&rxdp++->read, dma_addr0);
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_mm_store_si128((__m128i *)&rxdp++->read, dma_addr1);
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}
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rxq->rxrearm_start += RTE_IXGBE_RXQ_REARM_THRESH;
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if (rxq->rxrearm_start >= rxq->nb_rx_desc)
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rxq->rxrearm_start = 0;
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rxq->rxrearm_nb -= RTE_IXGBE_RXQ_REARM_THRESH;
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rx_id = (uint16_t) ((rxq->rxrearm_start == 0) ?
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(rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1));
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/* Update the tail pointer on the NIC */
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IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rx_id);
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}
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/* Handling the offload flags (olflags) field takes computation
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* time when receiving packets. Therefore we provide a flag to disable
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* the processing of the olflags field when they are not needed. This
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* gives improved performance, at the cost of losing the offload info
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* in the received packet
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*/
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#ifdef RTE_IXGBE_RX_OLFLAGS_ENABLE
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#ifdef RTE_NEXT_ABI
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#define OLFLAGS_MASK_V (((uint64_t)PKT_RX_VLAN_PKT << 48) | \
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((uint64_t)PKT_RX_VLAN_PKT << 32) | \
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((uint64_t)PKT_RX_VLAN_PKT << 16) | \
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((uint64_t)PKT_RX_VLAN_PKT))
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#else
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#define OLFLAGS_MASK ((uint16_t)(PKT_RX_VLAN_PKT | PKT_RX_IPV4_HDR |\
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PKT_RX_IPV4_HDR_EXT | PKT_RX_IPV6_HDR |\
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PKT_RX_IPV6_HDR_EXT))
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#define OLFLAGS_MASK_V (((uint64_t)OLFLAGS_MASK << 48) | \
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((uint64_t)OLFLAGS_MASK << 32) | \
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((uint64_t)OLFLAGS_MASK << 16) | \
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((uint64_t)OLFLAGS_MASK))
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#define PTYPE_SHIFT (1)
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#endif /* RTE_NEXT_ABI */
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#define VTAG_SHIFT (3)
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static inline void
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desc_to_olflags_v(__m128i descs[4], struct rte_mbuf **rx_pkts)
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{
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#ifdef RTE_NEXT_ABI
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__m128i vtag0, vtag1;
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union {
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uint16_t e[4];
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uint64_t dword;
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} vol;
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vtag0 = _mm_unpackhi_epi16(descs[0], descs[1]);
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vtag1 = _mm_unpackhi_epi16(descs[2], descs[3]);
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vtag1 = _mm_unpacklo_epi32(vtag0, vtag1);
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vtag1 = _mm_srli_epi16(vtag1, VTAG_SHIFT);
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vol.dword = _mm_cvtsi128_si64(vtag1) & OLFLAGS_MASK_V;
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#else
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__m128i ptype0, ptype1, vtag0, vtag1;
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union {
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uint16_t e[4];
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uint64_t dword;
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} vol;
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ptype0 = _mm_unpacklo_epi16(descs[0], descs[1]);
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ptype1 = _mm_unpacklo_epi16(descs[2], descs[3]);
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vtag0 = _mm_unpackhi_epi16(descs[0], descs[1]);
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vtag1 = _mm_unpackhi_epi16(descs[2], descs[3]);
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ptype1 = _mm_unpacklo_epi32(ptype0, ptype1);
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vtag1 = _mm_unpacklo_epi32(vtag0, vtag1);
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ptype1 = _mm_slli_epi16(ptype1, PTYPE_SHIFT);
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vtag1 = _mm_srli_epi16(vtag1, VTAG_SHIFT);
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ptype1 = _mm_or_si128(ptype1, vtag1);
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vol.dword = _mm_cvtsi128_si64(ptype1) & OLFLAGS_MASK_V;
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#endif /* RTE_NEXT_ABI */
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rx_pkts[0]->ol_flags = vol.e[0];
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rx_pkts[1]->ol_flags = vol.e[1];
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rx_pkts[2]->ol_flags = vol.e[2];
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rx_pkts[3]->ol_flags = vol.e[3];
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}
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#else
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#define desc_to_olflags_v(desc, rx_pkts) do {} while (0)
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#endif
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/*
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* vPMD receive routine, now only accept (nb_pkts == RTE_IXGBE_VPMD_RX_BURST)
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* in one loop
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*
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* Notice:
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* - nb_pkts < RTE_IXGBE_VPMD_RX_BURST, just return no packet
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* - nb_pkts > RTE_IXGBE_VPMD_RX_BURST, only scan RTE_IXGBE_VPMD_RX_BURST
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* numbers of DD bit
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* - don't support ol_flags for rss and csum err
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*/
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static inline uint16_t
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_recv_raw_pkts_vec(struct ixgbe_rx_queue *rxq, struct rte_mbuf **rx_pkts,
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uint16_t nb_pkts, uint8_t *split_packet)
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{
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volatile union ixgbe_adv_rx_desc *rxdp;
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struct ixgbe_rx_entry *sw_ring;
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uint16_t nb_pkts_recd;
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int pos;
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uint64_t var;
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__m128i shuf_msk;
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#ifdef RTE_NEXT_ABI
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__m128i crc_adjust = _mm_set_epi16(
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0, 0, 0, /* ignore non-length fields */
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-rxq->crc_len, /* sub crc on data_len */
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0, /* ignore high-16bits of pkt_len */
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-rxq->crc_len, /* sub crc on pkt_len */
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0, 0 /* ignore pkt_type field */
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);
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__m128i dd_check, eop_check;
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__m128i desc_mask = _mm_set_epi32(0xFFFFFFFF, 0xFFFFFFFF,
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0xFFFFFFFF, 0xFFFF07F0);
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#else
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__m128i crc_adjust = _mm_set_epi16(
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0, 0, 0, 0, /* ignore non-length fields */
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0, /* ignore high-16bits of pkt_len */
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-rxq->crc_len, /* sub crc on pkt_len */
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-rxq->crc_len, /* sub crc on data_len */
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0 /* ignore pkt_type field */
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);
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__m128i dd_check, eop_check;
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#endif /* RTE_NEXT_ABI */
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if (unlikely(nb_pkts < RTE_IXGBE_VPMD_RX_BURST))
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return 0;
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/* Just the act of getting into the function from the application is
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* going to cost about 7 cycles */
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rxdp = rxq->rx_ring + rxq->rx_tail;
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_mm_prefetch((const void *)rxdp, _MM_HINT_T0);
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/* See if we need to rearm the RX queue - gives the prefetch a bit
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* of time to act */
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if (rxq->rxrearm_nb > RTE_IXGBE_RXQ_REARM_THRESH)
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ixgbe_rxq_rearm(rxq);
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/* Before we start moving massive data around, check to see if
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* there is actually a packet available */
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if (!(rxdp->wb.upper.status_error &
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rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD)))
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return 0;
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/* 4 packets DD mask */
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dd_check = _mm_set_epi64x(0x0000000100000001LL, 0x0000000100000001LL);
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/* 4 packets EOP mask */
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eop_check = _mm_set_epi64x(0x0000000200000002LL, 0x0000000200000002LL);
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/* mask to shuffle from desc. to mbuf */
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#ifdef RTE_NEXT_ABI
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shuf_msk = _mm_set_epi8(
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7, 6, 5, 4, /* octet 4~7, 32bits rss */
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15, 14, /* octet 14~15, low 16 bits vlan_macip */
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13, 12, /* octet 12~13, 16 bits data_len */
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0xFF, 0xFF, /* skip high 16 bits pkt_len, zero out */
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13, 12, /* octet 12~13, low 16 bits pkt_len */
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0xFF, 0xFF, /* skip high 16 bits pkt_type */
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1, /* octet 1, 8 bits pkt_type field */
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0 /* octet 0, 4 bits offset 4 pkt_type field */
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);
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#else
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shuf_msk = _mm_set_epi8(
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7, 6, 5, 4, /* octet 4~7, 32bits rss */
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0xFF, 0xFF, /* skip high 16 bits vlan_macip, zero out */
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15, 14, /* octet 14~15, low 16 bits vlan_macip */
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0xFF, 0xFF, /* skip high 16 bits pkt_len, zero out */
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13, 12, /* octet 12~13, low 16 bits pkt_len */
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13, 12, /* octet 12~13, 16 bits data_len */
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0xFF, 0xFF /* skip pkt_type field */
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);
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#endif /* RTE_NEXT_ABI */
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/* Cache is empty -> need to scan the buffer rings, but first move
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* the next 'n' mbufs into the cache */
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sw_ring = &rxq->sw_ring[rxq->rx_tail];
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#ifdef RTE_NEXT_ABI
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/* A. load 4 packet in one loop
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* [A*. mask out 4 unused dirty field in desc]
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* B. copy 4 mbuf point from swring to rx_pkts
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* C. calc the number of DD bits among the 4 packets
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* [C*. extract the end-of-packet bit, if requested]
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* D. fill info. from desc to mbuf
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*/
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#else
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/* A. load 4 packet in one loop
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* B. copy 4 mbuf point from swring to rx_pkts
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* C. calc the number of DD bits among the 4 packets
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* [C*. extract the end-of-packet bit, if requested]
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* D. fill info. from desc to mbuf
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*/
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#endif /* RTE_NEXT_ABI */
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for (pos = 0, nb_pkts_recd = 0; pos < RTE_IXGBE_VPMD_RX_BURST;
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pos += RTE_IXGBE_DESCS_PER_LOOP,
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rxdp += RTE_IXGBE_DESCS_PER_LOOP) {
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__m128i descs[RTE_IXGBE_DESCS_PER_LOOP];
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__m128i pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
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__m128i zero, staterr, sterr_tmp1, sterr_tmp2;
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__m128i mbp1, mbp2; /* two mbuf pointer in one XMM reg. */
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if (split_packet) {
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rte_prefetch0(&rx_pkts[pos]->cacheline1);
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rte_prefetch0(&rx_pkts[pos + 1]->cacheline1);
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rte_prefetch0(&rx_pkts[pos + 2]->cacheline1);
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rte_prefetch0(&rx_pkts[pos + 3]->cacheline1);
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}
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/* B.1 load 1 mbuf point */
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mbp1 = _mm_loadu_si128((__m128i *)&sw_ring[pos]);
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/* Read desc statuses backwards to avoid race condition */
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/* A.1 load 4 pkts desc */
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descs[3] = _mm_loadu_si128((__m128i *)(rxdp + 3));
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/* B.2 copy 2 mbuf point into rx_pkts */
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_mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
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/* B.1 load 1 mbuf point */
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mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos+2]);
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descs[2] = _mm_loadu_si128((__m128i *)(rxdp + 2));
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/* B.1 load 2 mbuf point */
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descs[1] = _mm_loadu_si128((__m128i *)(rxdp + 1));
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descs[0] = _mm_loadu_si128((__m128i *)(rxdp));
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/* B.2 copy 2 mbuf point into rx_pkts */
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_mm_storeu_si128((__m128i *)&rx_pkts[pos+2], mbp2);
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#ifdef RTE_NEXT_ABI
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/* A* mask out 0~3 bits RSS type */
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descs[3] = _mm_and_si128(descs[3], desc_mask);
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descs[2] = _mm_and_si128(descs[2], desc_mask);
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/* A* mask out 0~3 bits RSS type */
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descs[1] = _mm_and_si128(descs[1], desc_mask);
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descs[0] = _mm_and_si128(descs[0], desc_mask);
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#endif /* RTE_NEXT_ABI */
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/* avoid compiler reorder optimization */
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rte_compiler_barrier();
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/* D.1 pkt 3,4 convert format from desc to pktmbuf */
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pkt_mb4 = _mm_shuffle_epi8(descs[3], shuf_msk);
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pkt_mb3 = _mm_shuffle_epi8(descs[2], shuf_msk);
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/* C.1 4=>2 filter staterr info only */
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sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
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/* C.1 4=>2 filter staterr info only */
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sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
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#ifdef RTE_NEXT_ABI
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/* set ol_flags with vlan packet type */
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#else
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/* set ol_flags with packet type and vlan tag */
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#endif /* RTE_NEXT_ABI */
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desc_to_olflags_v(descs, &rx_pkts[pos]);
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/* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
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pkt_mb4 = _mm_add_epi16(pkt_mb4, crc_adjust);
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pkt_mb3 = _mm_add_epi16(pkt_mb3, crc_adjust);
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/* D.1 pkt 1,2 convert format from desc to pktmbuf */
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pkt_mb2 = _mm_shuffle_epi8(descs[1], shuf_msk);
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pkt_mb1 = _mm_shuffle_epi8(descs[0], shuf_msk);
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/* C.2 get 4 pkts staterr value */
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zero = _mm_xor_si128(dd_check, dd_check);
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staterr = _mm_unpacklo_epi32(sterr_tmp1, sterr_tmp2);
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/* D.3 copy final 3,4 data to rx_pkts */
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_mm_storeu_si128((void *)&rx_pkts[pos+3]->rx_descriptor_fields1,
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pkt_mb4);
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_mm_storeu_si128((void *)&rx_pkts[pos+2]->rx_descriptor_fields1,
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pkt_mb3);
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/* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
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pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
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pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
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/* C* extract and record EOP bit */
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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_IXGBE_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_IXGBE_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;
|
|
}
|
|
|
|
/*
|
|
* vPMD receive routine, now only accept (nb_pkts == RTE_IXGBE_VPMD_RX_BURST)
|
|
* in one loop
|
|
*
|
|
* Notice:
|
|
* - nb_pkts < RTE_IXGBE_VPMD_RX_BURST, just return no packet
|
|
* - nb_pkts > RTE_IXGBE_VPMD_RX_BURST, only scan RTE_IXGBE_VPMD_RX_BURST
|
|
* numbers of DD bit
|
|
* - don't support ol_flags for rss and csum err
|
|
*/
|
|
uint16_t
|
|
ixgbe_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 ixgbe_rx_queue *rxq, struct rte_mbuf **rx_bufs,
|
|
uint16_t nb_bufs, uint8_t *split_flags)
|
|
{
|
|
struct rte_mbuf *pkts[RTE_IXGBE_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;
|
|
|
|
start->nb_segs--;
|
|
while (secondlast->next != end)
|
|
secondlast = secondlast->next;
|
|
secondlast->data_len -= (rxq->crc_len -
|
|
end->data_len);
|
|
secondlast->next = NULL;
|
|
rte_pktmbuf_free_seg(end);
|
|
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:
|
|
* - don't support ol_flags for rss and csum err
|
|
* - now only accept (nb_pkts == RTE_IXGBE_VPMD_RX_BURST)
|
|
*/
|
|
uint16_t
|
|
ixgbe_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
|
|
uint16_t nb_pkts)
|
|
{
|
|
struct ixgbe_rx_queue *rxq = rx_queue;
|
|
uint8_t split_flags[RTE_IXGBE_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 union ixgbe_adv_tx_desc *txdp,
|
|
struct rte_mbuf *pkt, uint64_t flags)
|
|
{
|
|
__m128i descriptor = _mm_set_epi64x((uint64_t)pkt->pkt_len << 46 |
|
|
flags | pkt->data_len,
|
|
pkt->buf_physaddr + pkt->data_off);
|
|
_mm_store_si128((__m128i *)&txdp->read, descriptor);
|
|
}
|
|
|
|
static inline void
|
|
vtx(volatile union ixgbe_adv_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))
|
|
ixgbe_tx_free_bufs(struct ixgbe_tx_queue *txq)
|
|
{
|
|
struct ixgbe_tx_entry_v *txep;
|
|
uint32_t status;
|
|
uint32_t n;
|
|
uint32_t i;
|
|
int nb_free = 0;
|
|
struct rte_mbuf *m, *free[RTE_IXGBE_TX_MAX_FREE_BUF_SZ];
|
|
|
|
/* check DD bit on threshold descriptor */
|
|
status = txq->tx_ring[txq->tx_next_dd].wb.status;
|
|
if (!(status & IXGBE_ADVTXD_STAT_DD))
|
|
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_v[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 ixgbe_tx_entry_v *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
|
|
ixgbe_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
|
|
uint16_t nb_pkts)
|
|
{
|
|
struct ixgbe_tx_queue *txq = (struct ixgbe_tx_queue *)tx_queue;
|
|
volatile union ixgbe_adv_tx_desc *txdp;
|
|
struct ixgbe_tx_entry_v *txep;
|
|
uint16_t n, nb_commit, tx_id;
|
|
uint64_t flags = DCMD_DTYP_FLAGS;
|
|
uint64_t rs = IXGBE_ADVTXD_DCMD_RS|DCMD_DTYP_FLAGS;
|
|
int i;
|
|
|
|
if (unlikely(nb_pkts > RTE_IXGBE_VPMD_TX_BURST))
|
|
nb_pkts = RTE_IXGBE_VPMD_TX_BURST;
|
|
|
|
if (txq->nb_tx_free < txq->tx_free_thresh)
|
|
ixgbe_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_v[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_v[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].read.cmd_type_len |=
|
|
rte_cpu_to_le_32(IXGBE_ADVTXD_DCMD_RS);
|
|
txq->tx_next_rs = (uint16_t)(txq->tx_next_rs +
|
|
txq->tx_rs_thresh);
|
|
}
|
|
|
|
txq->tx_tail = tx_id;
|
|
|
|
IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, txq->tx_tail);
|
|
|
|
return nb_pkts;
|
|
}
|
|
|
|
static void __attribute__((cold))
|
|
ixgbe_tx_queue_release_mbufs_vec(struct ixgbe_tx_queue *txq)
|
|
{
|
|
unsigned i;
|
|
struct ixgbe_tx_entry_v *txe;
|
|
const uint16_t max_desc = (uint16_t)(txq->nb_tx_desc - 1);
|
|
|
|
if (txq->sw_ring == NULL || txq->nb_tx_free == max_desc)
|
|
return;
|
|
|
|
/* release the used mbufs in sw_ring */
|
|
for (i = txq->tx_next_dd - (txq->tx_rs_thresh - 1);
|
|
i != txq->tx_tail;
|
|
i = (i + 1) & max_desc) {
|
|
txe = &txq->sw_ring_v[i];
|
|
rte_pktmbuf_free_seg(txe->mbuf);
|
|
}
|
|
txq->nb_tx_free = max_desc;
|
|
|
|
/* reset tx_entry */
|
|
for (i = 0; i < txq->nb_tx_desc; i++) {
|
|
txe = &txq->sw_ring_v[i];
|
|
txe->mbuf = NULL;
|
|
}
|
|
}
|
|
|
|
void __attribute__((cold))
|
|
ixgbe_rx_queue_release_mbufs_vec(struct ixgbe_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 */
|
|
for (i = rxq->rx_tail; i != rxq->rxrearm_start; i = (i + 1) & mask)
|
|
rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
|
|
rxq->rxrearm_nb = rxq->nb_rx_desc;
|
|
|
|
/* set all entries to NULL */
|
|
memset(rxq->sw_ring, 0, sizeof(rxq->sw_ring[0]) * rxq->nb_rx_desc);
|
|
}
|
|
|
|
static void __attribute__((cold))
|
|
ixgbe_tx_free_swring(struct ixgbe_tx_queue *txq)
|
|
{
|
|
if (txq == NULL)
|
|
return;
|
|
|
|
if (txq->sw_ring != NULL) {
|
|
rte_free(txq->sw_ring_v - 1);
|
|
txq->sw_ring_v = NULL;
|
|
}
|
|
}
|
|
|
|
static void __attribute__((cold))
|
|
ixgbe_reset_tx_queue(struct ixgbe_tx_queue *txq)
|
|
{
|
|
static const union ixgbe_adv_tx_desc zeroed_desc = {{0}};
|
|
struct ixgbe_tx_entry_v *txe = txq->sw_ring_v;
|
|
uint16_t i;
|
|
|
|
/* Zero out HW ring memory */
|
|
for (i = 0; i < txq->nb_tx_desc; i++)
|
|
txq->tx_ring[i] = zeroed_desc;
|
|
|
|
/* Initialize SW ring entries */
|
|
for (i = 0; i < txq->nb_tx_desc; i++) {
|
|
volatile union ixgbe_adv_tx_desc *txd = &txq->tx_ring[i];
|
|
txd->wb.status = IXGBE_TXD_STAT_DD;
|
|
txe[i].mbuf = NULL;
|
|
}
|
|
|
|
txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
|
|
txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
|
|
|
|
txq->tx_tail = 0;
|
|
txq->nb_tx_used = 0;
|
|
/*
|
|
* Always allow 1 descriptor to be un-allocated to avoid
|
|
* a H/W race condition
|
|
*/
|
|
txq->last_desc_cleaned = (uint16_t)(txq->nb_tx_desc - 1);
|
|
txq->nb_tx_free = (uint16_t)(txq->nb_tx_desc - 1);
|
|
txq->ctx_curr = 0;
|
|
memset((void *)&txq->ctx_cache, 0,
|
|
IXGBE_CTX_NUM * sizeof(struct ixgbe_advctx_info));
|
|
}
|
|
|
|
static const struct ixgbe_txq_ops vec_txq_ops = {
|
|
.release_mbufs = ixgbe_tx_queue_release_mbufs_vec,
|
|
.free_swring = ixgbe_tx_free_swring,
|
|
.reset = ixgbe_reset_tx_queue,
|
|
};
|
|
|
|
int __attribute__((cold))
|
|
ixgbe_rxq_vec_setup(struct ixgbe_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))
|
|
ixgbe_txq_vec_setup(struct ixgbe_tx_queue *txq)
|
|
{
|
|
if (txq->sw_ring_v == NULL)
|
|
return -1;
|
|
|
|
/* leave the first one for overflow */
|
|
txq->sw_ring_v = txq->sw_ring_v + 1;
|
|
txq->ops = &vec_txq_ops;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int __attribute__((cold))
|
|
ixgbe_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;
|
|
|
|
#ifndef RTE_IXGBE_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
|
|
}
|