6494b9a9b2
Optimize packed ring Tx path like Rx path. Split Tx path into batch and single Tx functions. Batch function is further optimized by AVX512 instructions. Signed-off-by: Marvin Liu <yong.liu@intel.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2051 lines
50 KiB
C
2051 lines
50 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <rte_cycles.h>
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#include <rte_memory.h>
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#include <rte_branch_prediction.h>
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#include <rte_mempool.h>
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#include <rte_malloc.h>
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#include <rte_mbuf.h>
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#include <rte_ether.h>
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#include <rte_ethdev_driver.h>
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#include <rte_prefetch.h>
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#include <rte_string_fns.h>
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#include <rte_errno.h>
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#include <rte_byteorder.h>
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#include <rte_net.h>
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#include <rte_ip.h>
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#include <rte_udp.h>
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#include <rte_tcp.h>
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#include "virtio_logs.h"
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#include "virtio_ethdev.h"
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#include "virtio_pci.h"
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#include "virtqueue.h"
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#include "virtio_rxtx.h"
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#include "virtio_rxtx_simple.h"
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#include "virtio_ring.h"
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#ifdef RTE_LIBRTE_VIRTIO_DEBUG_DUMP
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#define VIRTIO_DUMP_PACKET(m, len) rte_pktmbuf_dump(stdout, m, len)
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#else
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#define VIRTIO_DUMP_PACKET(m, len) do { } while (0)
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#endif
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int
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virtio_dev_rx_queue_done(void *rxq, uint16_t offset)
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{
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struct virtnet_rx *rxvq = rxq;
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struct virtqueue *vq = rxvq->vq;
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return VIRTQUEUE_NUSED(vq) >= offset;
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}
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void
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vq_ring_free_inorder(struct virtqueue *vq, uint16_t desc_idx, uint16_t num)
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{
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vq->vq_free_cnt += num;
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vq->vq_desc_tail_idx = desc_idx & (vq->vq_nentries - 1);
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}
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void
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vq_ring_free_chain(struct virtqueue *vq, uint16_t desc_idx)
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{
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struct vring_desc *dp, *dp_tail;
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struct vq_desc_extra *dxp;
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uint16_t desc_idx_last = desc_idx;
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dp = &vq->vq_split.ring.desc[desc_idx];
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dxp = &vq->vq_descx[desc_idx];
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vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt + dxp->ndescs);
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if ((dp->flags & VRING_DESC_F_INDIRECT) == 0) {
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while (dp->flags & VRING_DESC_F_NEXT) {
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desc_idx_last = dp->next;
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dp = &vq->vq_split.ring.desc[dp->next];
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}
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}
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dxp->ndescs = 0;
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/*
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* We must append the existing free chain, if any, to the end of
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* newly freed chain. If the virtqueue was completely used, then
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* head would be VQ_RING_DESC_CHAIN_END (ASSERTed above).
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*/
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if (vq->vq_desc_tail_idx == VQ_RING_DESC_CHAIN_END) {
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vq->vq_desc_head_idx = desc_idx;
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} else {
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dp_tail = &vq->vq_split.ring.desc[vq->vq_desc_tail_idx];
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dp_tail->next = desc_idx;
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}
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vq->vq_desc_tail_idx = desc_idx_last;
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dp->next = VQ_RING_DESC_CHAIN_END;
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}
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void
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virtio_update_packet_stats(struct virtnet_stats *stats, struct rte_mbuf *mbuf)
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{
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uint32_t s = mbuf->pkt_len;
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struct rte_ether_addr *ea;
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stats->bytes += s;
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if (s == 64) {
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stats->size_bins[1]++;
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} else if (s > 64 && s < 1024) {
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uint32_t bin;
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/* count zeros, and offset into correct bin */
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bin = (sizeof(s) * 8) - __builtin_clz(s) - 5;
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stats->size_bins[bin]++;
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} else {
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if (s < 64)
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stats->size_bins[0]++;
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else if (s < 1519)
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stats->size_bins[6]++;
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else
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stats->size_bins[7]++;
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}
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ea = rte_pktmbuf_mtod(mbuf, struct rte_ether_addr *);
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if (rte_is_multicast_ether_addr(ea)) {
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if (rte_is_broadcast_ether_addr(ea))
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stats->broadcast++;
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else
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stats->multicast++;
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}
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}
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static inline void
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virtio_rx_stats_updated(struct virtnet_rx *rxvq, struct rte_mbuf *m)
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{
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VIRTIO_DUMP_PACKET(m, m->data_len);
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virtio_update_packet_stats(&rxvq->stats, m);
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}
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static uint16_t
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virtqueue_dequeue_burst_rx_packed(struct virtqueue *vq,
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struct rte_mbuf **rx_pkts,
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uint32_t *len,
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uint16_t num)
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{
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struct rte_mbuf *cookie;
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uint16_t used_idx;
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uint16_t id;
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struct vring_packed_desc *desc;
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uint16_t i;
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desc = vq->vq_packed.ring.desc;
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for (i = 0; i < num; i++) {
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used_idx = vq->vq_used_cons_idx;
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/* desc_is_used has a load-acquire or rte_cio_rmb inside
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* and wait for used desc in virtqueue.
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*/
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if (!desc_is_used(&desc[used_idx], vq))
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return i;
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len[i] = desc[used_idx].len;
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id = desc[used_idx].id;
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cookie = (struct rte_mbuf *)vq->vq_descx[id].cookie;
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if (unlikely(cookie == NULL)) {
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PMD_DRV_LOG(ERR, "vring descriptor with no mbuf cookie at %u",
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vq->vq_used_cons_idx);
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break;
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}
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rte_prefetch0(cookie);
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rte_packet_prefetch(rte_pktmbuf_mtod(cookie, void *));
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rx_pkts[i] = cookie;
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vq->vq_free_cnt++;
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vq->vq_used_cons_idx++;
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if (vq->vq_used_cons_idx >= vq->vq_nentries) {
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vq->vq_used_cons_idx -= vq->vq_nentries;
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vq->vq_packed.used_wrap_counter ^= 1;
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}
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}
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return i;
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}
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static uint16_t
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virtqueue_dequeue_burst_rx(struct virtqueue *vq, struct rte_mbuf **rx_pkts,
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uint32_t *len, uint16_t num)
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{
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struct vring_used_elem *uep;
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struct rte_mbuf *cookie;
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uint16_t used_idx, desc_idx;
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uint16_t i;
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/* Caller does the check */
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for (i = 0; i < num ; i++) {
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used_idx = (uint16_t)(vq->vq_used_cons_idx & (vq->vq_nentries - 1));
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uep = &vq->vq_split.ring.used->ring[used_idx];
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desc_idx = (uint16_t) uep->id;
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len[i] = uep->len;
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cookie = (struct rte_mbuf *)vq->vq_descx[desc_idx].cookie;
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if (unlikely(cookie == NULL)) {
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PMD_DRV_LOG(ERR, "vring descriptor with no mbuf cookie at %u",
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vq->vq_used_cons_idx);
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break;
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}
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rte_prefetch0(cookie);
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rte_packet_prefetch(rte_pktmbuf_mtod(cookie, void *));
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rx_pkts[i] = cookie;
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vq->vq_used_cons_idx++;
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vq_ring_free_chain(vq, desc_idx);
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vq->vq_descx[desc_idx].cookie = NULL;
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}
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return i;
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}
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static uint16_t
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virtqueue_dequeue_rx_inorder(struct virtqueue *vq,
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struct rte_mbuf **rx_pkts,
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uint32_t *len,
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uint16_t num)
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{
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struct vring_used_elem *uep;
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struct rte_mbuf *cookie;
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uint16_t used_idx = 0;
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uint16_t i;
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if (unlikely(num == 0))
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return 0;
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for (i = 0; i < num; i++) {
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used_idx = vq->vq_used_cons_idx & (vq->vq_nentries - 1);
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/* Desc idx same as used idx */
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uep = &vq->vq_split.ring.used->ring[used_idx];
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len[i] = uep->len;
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cookie = (struct rte_mbuf *)vq->vq_descx[used_idx].cookie;
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if (unlikely(cookie == NULL)) {
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PMD_DRV_LOG(ERR, "vring descriptor with no mbuf cookie at %u",
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vq->vq_used_cons_idx);
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break;
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}
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rte_prefetch0(cookie);
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rte_packet_prefetch(rte_pktmbuf_mtod(cookie, void *));
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rx_pkts[i] = cookie;
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vq->vq_used_cons_idx++;
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vq->vq_descx[used_idx].cookie = NULL;
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}
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vq_ring_free_inorder(vq, used_idx, i);
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return i;
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}
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static inline int
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virtqueue_enqueue_refill_inorder(struct virtqueue *vq,
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struct rte_mbuf **cookies,
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uint16_t num)
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{
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struct vq_desc_extra *dxp;
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struct virtio_hw *hw = vq->hw;
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struct vring_desc *start_dp;
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uint16_t head_idx, idx, i = 0;
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if (unlikely(vq->vq_free_cnt == 0))
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return -ENOSPC;
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if (unlikely(vq->vq_free_cnt < num))
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return -EMSGSIZE;
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head_idx = vq->vq_desc_head_idx & (vq->vq_nentries - 1);
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start_dp = vq->vq_split.ring.desc;
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while (i < num) {
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idx = head_idx & (vq->vq_nentries - 1);
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dxp = &vq->vq_descx[idx];
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dxp->cookie = (void *)cookies[i];
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dxp->ndescs = 1;
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start_dp[idx].addr =
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VIRTIO_MBUF_ADDR(cookies[i], vq) +
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RTE_PKTMBUF_HEADROOM - hw->vtnet_hdr_size;
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start_dp[idx].len =
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cookies[i]->buf_len -
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RTE_PKTMBUF_HEADROOM +
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hw->vtnet_hdr_size;
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start_dp[idx].flags = VRING_DESC_F_WRITE;
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vq_update_avail_ring(vq, idx);
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head_idx++;
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i++;
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}
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vq->vq_desc_head_idx += num;
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vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - num);
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return 0;
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}
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static inline int
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virtqueue_enqueue_recv_refill(struct virtqueue *vq, struct rte_mbuf **cookie,
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uint16_t num)
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{
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struct vq_desc_extra *dxp;
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struct virtio_hw *hw = vq->hw;
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struct vring_desc *start_dp = vq->vq_split.ring.desc;
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uint16_t idx, i;
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if (unlikely(vq->vq_free_cnt == 0))
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return -ENOSPC;
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if (unlikely(vq->vq_free_cnt < num))
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return -EMSGSIZE;
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if (unlikely(vq->vq_desc_head_idx >= vq->vq_nentries))
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return -EFAULT;
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for (i = 0; i < num; i++) {
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idx = vq->vq_desc_head_idx;
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dxp = &vq->vq_descx[idx];
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dxp->cookie = (void *)cookie[i];
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dxp->ndescs = 1;
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start_dp[idx].addr =
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VIRTIO_MBUF_ADDR(cookie[i], vq) +
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RTE_PKTMBUF_HEADROOM - hw->vtnet_hdr_size;
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start_dp[idx].len =
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cookie[i]->buf_len - RTE_PKTMBUF_HEADROOM +
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hw->vtnet_hdr_size;
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start_dp[idx].flags = VRING_DESC_F_WRITE;
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vq->vq_desc_head_idx = start_dp[idx].next;
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vq_update_avail_ring(vq, idx);
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if (vq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END) {
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vq->vq_desc_tail_idx = vq->vq_desc_head_idx;
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break;
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}
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}
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vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - num);
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return 0;
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}
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static inline int
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virtqueue_enqueue_recv_refill_packed(struct virtqueue *vq,
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struct rte_mbuf **cookie, uint16_t num)
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{
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struct vring_packed_desc *start_dp = vq->vq_packed.ring.desc;
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uint16_t flags = vq->vq_packed.cached_flags;
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struct virtio_hw *hw = vq->hw;
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struct vq_desc_extra *dxp;
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uint16_t idx;
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int i;
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if (unlikely(vq->vq_free_cnt == 0))
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return -ENOSPC;
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if (unlikely(vq->vq_free_cnt < num))
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return -EMSGSIZE;
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for (i = 0; i < num; i++) {
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idx = vq->vq_avail_idx;
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dxp = &vq->vq_descx[idx];
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dxp->cookie = (void *)cookie[i];
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dxp->ndescs = 1;
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start_dp[idx].addr = VIRTIO_MBUF_ADDR(cookie[i], vq) +
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RTE_PKTMBUF_HEADROOM - hw->vtnet_hdr_size;
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start_dp[idx].len = cookie[i]->buf_len - RTE_PKTMBUF_HEADROOM
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+ hw->vtnet_hdr_size;
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vq->vq_desc_head_idx = dxp->next;
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if (vq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END)
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vq->vq_desc_tail_idx = vq->vq_desc_head_idx;
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virtqueue_store_flags_packed(&start_dp[idx], flags,
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hw->weak_barriers);
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if (++vq->vq_avail_idx >= vq->vq_nentries) {
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vq->vq_avail_idx -= vq->vq_nentries;
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vq->vq_packed.cached_flags ^=
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VRING_PACKED_DESC_F_AVAIL_USED;
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flags = vq->vq_packed.cached_flags;
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}
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}
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vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - num);
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return 0;
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}
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/* When doing TSO, the IP length is not included in the pseudo header
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* checksum of the packet given to the PMD, but for virtio it is
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* expected.
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*/
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static void
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virtio_tso_fix_cksum(struct rte_mbuf *m)
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{
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/* common case: header is not fragmented */
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if (likely(rte_pktmbuf_data_len(m) >= m->l2_len + m->l3_len +
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m->l4_len)) {
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struct rte_ipv4_hdr *iph;
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struct rte_ipv6_hdr *ip6h;
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struct rte_tcp_hdr *th;
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uint16_t prev_cksum, new_cksum, ip_len, ip_paylen;
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uint32_t tmp;
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iph = rte_pktmbuf_mtod_offset(m,
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struct rte_ipv4_hdr *, m->l2_len);
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th = RTE_PTR_ADD(iph, m->l3_len);
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if ((iph->version_ihl >> 4) == 4) {
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iph->hdr_checksum = 0;
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iph->hdr_checksum = rte_ipv4_cksum(iph);
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ip_len = iph->total_length;
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ip_paylen = rte_cpu_to_be_16(rte_be_to_cpu_16(ip_len) -
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m->l3_len);
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} else {
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ip6h = (struct rte_ipv6_hdr *)iph;
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ip_paylen = ip6h->payload_len;
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}
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/* calculate the new phdr checksum not including ip_paylen */
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prev_cksum = th->cksum;
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tmp = prev_cksum;
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tmp += ip_paylen;
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tmp = (tmp & 0xffff) + (tmp >> 16);
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new_cksum = tmp;
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/* replace it in the packet */
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th->cksum = new_cksum;
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}
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}
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static inline void
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virtqueue_enqueue_xmit_inorder(struct virtnet_tx *txvq,
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struct rte_mbuf **cookies,
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uint16_t num)
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{
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struct vq_desc_extra *dxp;
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struct virtqueue *vq = txvq->vq;
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struct vring_desc *start_dp;
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struct virtio_net_hdr *hdr;
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uint16_t idx;
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int16_t head_size = vq->hw->vtnet_hdr_size;
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uint16_t i = 0;
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idx = vq->vq_desc_head_idx;
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start_dp = vq->vq_split.ring.desc;
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while (i < num) {
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idx = idx & (vq->vq_nentries - 1);
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dxp = &vq->vq_descx[vq->vq_avail_idx & (vq->vq_nentries - 1)];
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dxp->cookie = (void *)cookies[i];
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dxp->ndescs = 1;
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virtio_update_packet_stats(&txvq->stats, cookies[i]);
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hdr = rte_pktmbuf_mtod_offset(cookies[i],
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struct virtio_net_hdr *, -head_size);
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/* if offload disabled, hdr is not zeroed yet, do it now */
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if (!vq->hw->has_tx_offload)
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virtqueue_clear_net_hdr(hdr);
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else
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virtqueue_xmit_offload(hdr, cookies[i], true);
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start_dp[idx].addr =
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VIRTIO_MBUF_DATA_DMA_ADDR(cookies[i], vq) - head_size;
|
|
start_dp[idx].len = cookies[i]->data_len + head_size;
|
|
start_dp[idx].flags = 0;
|
|
|
|
|
|
vq_update_avail_ring(vq, idx);
|
|
|
|
idx++;
|
|
i++;
|
|
};
|
|
|
|
vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - num);
|
|
vq->vq_desc_head_idx = idx & (vq->vq_nentries - 1);
|
|
}
|
|
|
|
static inline void
|
|
virtqueue_enqueue_xmit_packed_fast(struct virtnet_tx *txvq,
|
|
struct rte_mbuf *cookie,
|
|
int in_order)
|
|
{
|
|
struct virtqueue *vq = txvq->vq;
|
|
struct vring_packed_desc *dp;
|
|
struct vq_desc_extra *dxp;
|
|
uint16_t idx, id, flags;
|
|
int16_t head_size = vq->hw->vtnet_hdr_size;
|
|
struct virtio_net_hdr *hdr;
|
|
|
|
id = in_order ? vq->vq_avail_idx : vq->vq_desc_head_idx;
|
|
idx = vq->vq_avail_idx;
|
|
dp = &vq->vq_packed.ring.desc[idx];
|
|
|
|
dxp = &vq->vq_descx[id];
|
|
dxp->ndescs = 1;
|
|
dxp->cookie = cookie;
|
|
|
|
flags = vq->vq_packed.cached_flags;
|
|
|
|
/* prepend cannot fail, checked by caller */
|
|
hdr = rte_pktmbuf_mtod_offset(cookie, struct virtio_net_hdr *,
|
|
-head_size);
|
|
|
|
/* if offload disabled, hdr is not zeroed yet, do it now */
|
|
if (!vq->hw->has_tx_offload)
|
|
virtqueue_clear_net_hdr(hdr);
|
|
else
|
|
virtqueue_xmit_offload(hdr, cookie, true);
|
|
|
|
dp->addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookie, vq) - head_size;
|
|
dp->len = cookie->data_len + head_size;
|
|
dp->id = id;
|
|
|
|
if (++vq->vq_avail_idx >= vq->vq_nentries) {
|
|
vq->vq_avail_idx -= vq->vq_nentries;
|
|
vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED;
|
|
}
|
|
|
|
vq->vq_free_cnt--;
|
|
|
|
if (!in_order) {
|
|
vq->vq_desc_head_idx = dxp->next;
|
|
if (vq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END)
|
|
vq->vq_desc_tail_idx = VQ_RING_DESC_CHAIN_END;
|
|
}
|
|
|
|
virtqueue_store_flags_packed(dp, flags, vq->hw->weak_barriers);
|
|
}
|
|
|
|
static inline void
|
|
virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie,
|
|
uint16_t needed, int use_indirect, int can_push,
|
|
int in_order)
|
|
{
|
|
struct virtio_tx_region *txr = txvq->virtio_net_hdr_mz->addr;
|
|
struct vq_desc_extra *dxp;
|
|
struct virtqueue *vq = txvq->vq;
|
|
struct vring_desc *start_dp;
|
|
uint16_t seg_num = cookie->nb_segs;
|
|
uint16_t head_idx, idx;
|
|
int16_t head_size = vq->hw->vtnet_hdr_size;
|
|
bool prepend_header = false;
|
|
struct virtio_net_hdr *hdr;
|
|
|
|
head_idx = vq->vq_desc_head_idx;
|
|
idx = head_idx;
|
|
if (in_order)
|
|
dxp = &vq->vq_descx[vq->vq_avail_idx & (vq->vq_nentries - 1)];
|
|
else
|
|
dxp = &vq->vq_descx[idx];
|
|
dxp->cookie = (void *)cookie;
|
|
dxp->ndescs = needed;
|
|
|
|
start_dp = vq->vq_split.ring.desc;
|
|
|
|
if (can_push) {
|
|
/* prepend cannot fail, checked by caller */
|
|
hdr = rte_pktmbuf_mtod_offset(cookie, struct virtio_net_hdr *,
|
|
-head_size);
|
|
prepend_header = true;
|
|
|
|
/* if offload disabled, it is not zeroed below, do it now */
|
|
if (!vq->hw->has_tx_offload)
|
|
virtqueue_clear_net_hdr(hdr);
|
|
} else if (use_indirect) {
|
|
/* setup tx ring slot to point to indirect
|
|
* descriptor list stored in reserved region.
|
|
*
|
|
* the first slot in indirect ring is already preset
|
|
* to point to the header in reserved region
|
|
*/
|
|
start_dp[idx].addr = txvq->virtio_net_hdr_mem +
|
|
RTE_PTR_DIFF(&txr[idx].tx_indir, txr);
|
|
start_dp[idx].len = (seg_num + 1) * sizeof(struct vring_desc);
|
|
start_dp[idx].flags = VRING_DESC_F_INDIRECT;
|
|
hdr = (struct virtio_net_hdr *)&txr[idx].tx_hdr;
|
|
|
|
/* loop below will fill in rest of the indirect elements */
|
|
start_dp = txr[idx].tx_indir;
|
|
idx = 1;
|
|
} else {
|
|
/* setup first tx ring slot to point to header
|
|
* stored in reserved region.
|
|
*/
|
|
start_dp[idx].addr = txvq->virtio_net_hdr_mem +
|
|
RTE_PTR_DIFF(&txr[idx].tx_hdr, txr);
|
|
start_dp[idx].len = vq->hw->vtnet_hdr_size;
|
|
start_dp[idx].flags = VRING_DESC_F_NEXT;
|
|
hdr = (struct virtio_net_hdr *)&txr[idx].tx_hdr;
|
|
|
|
idx = start_dp[idx].next;
|
|
}
|
|
|
|
virtqueue_xmit_offload(hdr, cookie, vq->hw->has_tx_offload);
|
|
|
|
do {
|
|
start_dp[idx].addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookie, vq);
|
|
start_dp[idx].len = cookie->data_len;
|
|
if (prepend_header) {
|
|
start_dp[idx].addr -= head_size;
|
|
start_dp[idx].len += head_size;
|
|
prepend_header = false;
|
|
}
|
|
start_dp[idx].flags = cookie->next ? VRING_DESC_F_NEXT : 0;
|
|
idx = start_dp[idx].next;
|
|
} while ((cookie = cookie->next) != NULL);
|
|
|
|
if (use_indirect)
|
|
idx = vq->vq_split.ring.desc[head_idx].next;
|
|
|
|
vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - needed);
|
|
|
|
vq->vq_desc_head_idx = idx;
|
|
vq_update_avail_ring(vq, head_idx);
|
|
|
|
if (!in_order) {
|
|
if (vq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END)
|
|
vq->vq_desc_tail_idx = idx;
|
|
}
|
|
}
|
|
|
|
void
|
|
virtio_dev_cq_start(struct rte_eth_dev *dev)
|
|
{
|
|
struct virtio_hw *hw = dev->data->dev_private;
|
|
|
|
if (hw->cvq && hw->cvq->vq) {
|
|
rte_spinlock_init(&hw->cvq->lock);
|
|
VIRTQUEUE_DUMP((struct virtqueue *)hw->cvq->vq);
|
|
}
|
|
}
|
|
|
|
int
|
|
virtio_dev_rx_queue_setup(struct rte_eth_dev *dev,
|
|
uint16_t queue_idx,
|
|
uint16_t nb_desc,
|
|
unsigned int socket_id __rte_unused,
|
|
const struct rte_eth_rxconf *rx_conf,
|
|
struct rte_mempool *mp)
|
|
{
|
|
uint16_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_RQ_QUEUE_IDX;
|
|
struct virtio_hw *hw = dev->data->dev_private;
|
|
struct virtqueue *vq = hw->vqs[vtpci_queue_idx];
|
|
struct virtnet_rx *rxvq;
|
|
uint16_t rx_free_thresh;
|
|
|
|
PMD_INIT_FUNC_TRACE();
|
|
|
|
if (rx_conf->rx_deferred_start) {
|
|
PMD_INIT_LOG(ERR, "Rx deferred start is not supported");
|
|
return -EINVAL;
|
|
}
|
|
|
|
rx_free_thresh = rx_conf->rx_free_thresh;
|
|
if (rx_free_thresh == 0)
|
|
rx_free_thresh =
|
|
RTE_MIN(vq->vq_nentries / 4, DEFAULT_RX_FREE_THRESH);
|
|
|
|
if (rx_free_thresh & 0x3) {
|
|
RTE_LOG(ERR, PMD, "rx_free_thresh must be multiples of four."
|
|
" (rx_free_thresh=%u port=%u queue=%u)\n",
|
|
rx_free_thresh, dev->data->port_id, queue_idx);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (rx_free_thresh >= vq->vq_nentries) {
|
|
RTE_LOG(ERR, PMD, "rx_free_thresh must be less than the "
|
|
"number of RX entries (%u)."
|
|
" (rx_free_thresh=%u port=%u queue=%u)\n",
|
|
vq->vq_nentries,
|
|
rx_free_thresh, dev->data->port_id, queue_idx);
|
|
return -EINVAL;
|
|
}
|
|
vq->vq_free_thresh = rx_free_thresh;
|
|
|
|
if (nb_desc == 0 || nb_desc > vq->vq_nentries)
|
|
nb_desc = vq->vq_nentries;
|
|
vq->vq_free_cnt = RTE_MIN(vq->vq_free_cnt, nb_desc);
|
|
|
|
rxvq = &vq->rxq;
|
|
rxvq->queue_id = queue_idx;
|
|
rxvq->mpool = mp;
|
|
dev->data->rx_queues[queue_idx] = rxvq;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
virtio_dev_rx_queue_setup_finish(struct rte_eth_dev *dev, uint16_t queue_idx)
|
|
{
|
|
uint16_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_RQ_QUEUE_IDX;
|
|
struct virtio_hw *hw = dev->data->dev_private;
|
|
struct virtqueue *vq = hw->vqs[vtpci_queue_idx];
|
|
struct virtnet_rx *rxvq = &vq->rxq;
|
|
struct rte_mbuf *m;
|
|
uint16_t desc_idx;
|
|
int error, nbufs, i;
|
|
bool in_order = vtpci_with_feature(hw, VIRTIO_F_IN_ORDER);
|
|
|
|
PMD_INIT_FUNC_TRACE();
|
|
|
|
/* Allocate blank mbufs for the each rx descriptor */
|
|
nbufs = 0;
|
|
|
|
if (hw->use_vec_rx && !vtpci_packed_queue(hw)) {
|
|
for (desc_idx = 0; desc_idx < vq->vq_nentries;
|
|
desc_idx++) {
|
|
vq->vq_split.ring.avail->ring[desc_idx] = desc_idx;
|
|
vq->vq_split.ring.desc[desc_idx].flags =
|
|
VRING_DESC_F_WRITE;
|
|
}
|
|
|
|
virtio_rxq_vec_setup(rxvq);
|
|
}
|
|
|
|
memset(&rxvq->fake_mbuf, 0, sizeof(rxvq->fake_mbuf));
|
|
for (desc_idx = 0; desc_idx < RTE_PMD_VIRTIO_RX_MAX_BURST;
|
|
desc_idx++) {
|
|
vq->sw_ring[vq->vq_nentries + desc_idx] =
|
|
&rxvq->fake_mbuf;
|
|
}
|
|
|
|
if (hw->use_vec_rx && !vtpci_packed_queue(hw)) {
|
|
while (vq->vq_free_cnt >= RTE_VIRTIO_VPMD_RX_REARM_THRESH) {
|
|
virtio_rxq_rearm_vec(rxvq);
|
|
nbufs += RTE_VIRTIO_VPMD_RX_REARM_THRESH;
|
|
}
|
|
} else if (!vtpci_packed_queue(vq->hw) && in_order) {
|
|
if ((!virtqueue_full(vq))) {
|
|
uint16_t free_cnt = vq->vq_free_cnt;
|
|
struct rte_mbuf *pkts[free_cnt];
|
|
|
|
if (!rte_pktmbuf_alloc_bulk(rxvq->mpool, pkts,
|
|
free_cnt)) {
|
|
error = virtqueue_enqueue_refill_inorder(vq,
|
|
pkts,
|
|
free_cnt);
|
|
if (unlikely(error)) {
|
|
for (i = 0; i < free_cnt; i++)
|
|
rte_pktmbuf_free(pkts[i]);
|
|
}
|
|
}
|
|
|
|
nbufs += free_cnt;
|
|
vq_update_avail_idx(vq);
|
|
}
|
|
} else {
|
|
while (!virtqueue_full(vq)) {
|
|
m = rte_mbuf_raw_alloc(rxvq->mpool);
|
|
if (m == NULL)
|
|
break;
|
|
|
|
/* Enqueue allocated buffers */
|
|
if (vtpci_packed_queue(vq->hw))
|
|
error = virtqueue_enqueue_recv_refill_packed(vq,
|
|
&m, 1);
|
|
else
|
|
error = virtqueue_enqueue_recv_refill(vq,
|
|
&m, 1);
|
|
if (error) {
|
|
rte_pktmbuf_free(m);
|
|
break;
|
|
}
|
|
nbufs++;
|
|
}
|
|
|
|
if (!vtpci_packed_queue(vq->hw))
|
|
vq_update_avail_idx(vq);
|
|
}
|
|
|
|
PMD_INIT_LOG(DEBUG, "Allocated %d bufs", nbufs);
|
|
|
|
VIRTQUEUE_DUMP(vq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* struct rte_eth_dev *dev: Used to update dev
|
|
* uint16_t nb_desc: Defaults to values read from config space
|
|
* unsigned int socket_id: Used to allocate memzone
|
|
* const struct rte_eth_txconf *tx_conf: Used to setup tx engine
|
|
* uint16_t queue_idx: Just used as an index in dev txq list
|
|
*/
|
|
int
|
|
virtio_dev_tx_queue_setup(struct rte_eth_dev *dev,
|
|
uint16_t queue_idx,
|
|
uint16_t nb_desc,
|
|
unsigned int socket_id __rte_unused,
|
|
const struct rte_eth_txconf *tx_conf)
|
|
{
|
|
uint8_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_TQ_QUEUE_IDX;
|
|
struct virtio_hw *hw = dev->data->dev_private;
|
|
struct virtqueue *vq = hw->vqs[vtpci_queue_idx];
|
|
struct virtnet_tx *txvq;
|
|
uint16_t tx_free_thresh;
|
|
|
|
PMD_INIT_FUNC_TRACE();
|
|
|
|
if (tx_conf->tx_deferred_start) {
|
|
PMD_INIT_LOG(ERR, "Tx deferred start is not supported");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (nb_desc == 0 || nb_desc > vq->vq_nentries)
|
|
nb_desc = vq->vq_nentries;
|
|
vq->vq_free_cnt = RTE_MIN(vq->vq_free_cnt, nb_desc);
|
|
|
|
txvq = &vq->txq;
|
|
txvq->queue_id = queue_idx;
|
|
|
|
tx_free_thresh = tx_conf->tx_free_thresh;
|
|
if (tx_free_thresh == 0)
|
|
tx_free_thresh =
|
|
RTE_MIN(vq->vq_nentries / 4, DEFAULT_TX_FREE_THRESH);
|
|
|
|
if (tx_free_thresh >= (vq->vq_nentries - 3)) {
|
|
PMD_DRV_LOG(ERR, "tx_free_thresh must be less than the "
|
|
"number of TX entries minus 3 (%u)."
|
|
" (tx_free_thresh=%u port=%u queue=%u)\n",
|
|
vq->vq_nentries - 3,
|
|
tx_free_thresh, dev->data->port_id, queue_idx);
|
|
return -EINVAL;
|
|
}
|
|
|
|
vq->vq_free_thresh = tx_free_thresh;
|
|
|
|
dev->data->tx_queues[queue_idx] = txvq;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
virtio_dev_tx_queue_setup_finish(struct rte_eth_dev *dev,
|
|
uint16_t queue_idx)
|
|
{
|
|
uint8_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_TQ_QUEUE_IDX;
|
|
struct virtio_hw *hw = dev->data->dev_private;
|
|
struct virtqueue *vq = hw->vqs[vtpci_queue_idx];
|
|
|
|
PMD_INIT_FUNC_TRACE();
|
|
|
|
if (!vtpci_packed_queue(hw)) {
|
|
if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER))
|
|
vq->vq_split.ring.desc[vq->vq_nentries - 1].next = 0;
|
|
}
|
|
|
|
VIRTQUEUE_DUMP(vq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline void
|
|
virtio_discard_rxbuf(struct virtqueue *vq, struct rte_mbuf *m)
|
|
{
|
|
int error;
|
|
/*
|
|
* Requeue the discarded mbuf. This should always be
|
|
* successful since it was just dequeued.
|
|
*/
|
|
if (vtpci_packed_queue(vq->hw))
|
|
error = virtqueue_enqueue_recv_refill_packed(vq, &m, 1);
|
|
else
|
|
error = virtqueue_enqueue_recv_refill(vq, &m, 1);
|
|
|
|
if (unlikely(error)) {
|
|
PMD_DRV_LOG(ERR, "cannot requeue discarded mbuf");
|
|
rte_pktmbuf_free(m);
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
virtio_discard_rxbuf_inorder(struct virtqueue *vq, struct rte_mbuf *m)
|
|
{
|
|
int error;
|
|
|
|
error = virtqueue_enqueue_refill_inorder(vq, &m, 1);
|
|
if (unlikely(error)) {
|
|
PMD_DRV_LOG(ERR, "cannot requeue discarded mbuf");
|
|
rte_pktmbuf_free(m);
|
|
}
|
|
}
|
|
|
|
/* Optionally fill offload information in structure */
|
|
static inline int
|
|
virtio_rx_offload(struct rte_mbuf *m, struct virtio_net_hdr *hdr)
|
|
{
|
|
struct rte_net_hdr_lens hdr_lens;
|
|
uint32_t hdrlen, ptype;
|
|
int l4_supported = 0;
|
|
|
|
/* nothing to do */
|
|
if (hdr->flags == 0 && hdr->gso_type == VIRTIO_NET_HDR_GSO_NONE)
|
|
return 0;
|
|
|
|
m->ol_flags |= PKT_RX_IP_CKSUM_UNKNOWN;
|
|
|
|
ptype = rte_net_get_ptype(m, &hdr_lens, RTE_PTYPE_ALL_MASK);
|
|
m->packet_type = ptype;
|
|
if ((ptype & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP ||
|
|
(ptype & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_UDP ||
|
|
(ptype & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_SCTP)
|
|
l4_supported = 1;
|
|
|
|
if (hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) {
|
|
hdrlen = hdr_lens.l2_len + hdr_lens.l3_len + hdr_lens.l4_len;
|
|
if (hdr->csum_start <= hdrlen && l4_supported) {
|
|
m->ol_flags |= PKT_RX_L4_CKSUM_NONE;
|
|
} else {
|
|
/* Unknown proto or tunnel, do sw cksum. We can assume
|
|
* the cksum field is in the first segment since the
|
|
* buffers we provided to the host are large enough.
|
|
* In case of SCTP, this will be wrong since it's a CRC
|
|
* but there's nothing we can do.
|
|
*/
|
|
uint16_t csum = 0, off;
|
|
|
|
rte_raw_cksum_mbuf(m, hdr->csum_start,
|
|
rte_pktmbuf_pkt_len(m) - hdr->csum_start,
|
|
&csum);
|
|
if (likely(csum != 0xffff))
|
|
csum = ~csum;
|
|
off = hdr->csum_offset + hdr->csum_start;
|
|
if (rte_pktmbuf_data_len(m) >= off + 1)
|
|
*rte_pktmbuf_mtod_offset(m, uint16_t *,
|
|
off) = csum;
|
|
}
|
|
} else if (hdr->flags & VIRTIO_NET_HDR_F_DATA_VALID && l4_supported) {
|
|
m->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
|
|
}
|
|
|
|
/* GSO request, save required information in mbuf */
|
|
if (hdr->gso_type != VIRTIO_NET_HDR_GSO_NONE) {
|
|
/* Check unsupported modes */
|
|
if ((hdr->gso_type & VIRTIO_NET_HDR_GSO_ECN) ||
|
|
(hdr->gso_size == 0)) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Update mss lengthes in mbuf */
|
|
m->tso_segsz = hdr->gso_size;
|
|
switch (hdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN) {
|
|
case VIRTIO_NET_HDR_GSO_TCPV4:
|
|
case VIRTIO_NET_HDR_GSO_TCPV6:
|
|
m->ol_flags |= PKT_RX_LRO | \
|
|
PKT_RX_L4_CKSUM_NONE;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define DESC_PER_CACHELINE (RTE_CACHE_LINE_SIZE / sizeof(struct vring_desc))
|
|
uint16_t
|
|
virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
|
|
{
|
|
struct virtnet_rx *rxvq = rx_queue;
|
|
struct virtqueue *vq = rxvq->vq;
|
|
struct virtio_hw *hw = vq->hw;
|
|
struct rte_mbuf *rxm;
|
|
uint16_t nb_used, num, nb_rx;
|
|
uint32_t len[VIRTIO_MBUF_BURST_SZ];
|
|
struct rte_mbuf *rcv_pkts[VIRTIO_MBUF_BURST_SZ];
|
|
int error;
|
|
uint32_t i, nb_enqueued;
|
|
uint32_t hdr_size;
|
|
struct virtio_net_hdr *hdr;
|
|
|
|
nb_rx = 0;
|
|
if (unlikely(hw->started == 0))
|
|
return nb_rx;
|
|
|
|
nb_used = VIRTQUEUE_NUSED(vq);
|
|
|
|
virtio_rmb(hw->weak_barriers);
|
|
|
|
num = likely(nb_used <= nb_pkts) ? nb_used : nb_pkts;
|
|
if (unlikely(num > VIRTIO_MBUF_BURST_SZ))
|
|
num = VIRTIO_MBUF_BURST_SZ;
|
|
if (likely(num > DESC_PER_CACHELINE))
|
|
num = num - ((vq->vq_used_cons_idx + num) % DESC_PER_CACHELINE);
|
|
|
|
num = virtqueue_dequeue_burst_rx(vq, rcv_pkts, len, num);
|
|
PMD_RX_LOG(DEBUG, "used:%d dequeue:%d", nb_used, num);
|
|
|
|
nb_enqueued = 0;
|
|
hdr_size = hw->vtnet_hdr_size;
|
|
|
|
for (i = 0; i < num ; i++) {
|
|
rxm = rcv_pkts[i];
|
|
|
|
PMD_RX_LOG(DEBUG, "packet len:%d", len[i]);
|
|
|
|
if (unlikely(len[i] < hdr_size + RTE_ETHER_HDR_LEN)) {
|
|
PMD_RX_LOG(ERR, "Packet drop");
|
|
nb_enqueued++;
|
|
virtio_discard_rxbuf(vq, rxm);
|
|
rxvq->stats.errors++;
|
|
continue;
|
|
}
|
|
|
|
rxm->port = rxvq->port_id;
|
|
rxm->data_off = RTE_PKTMBUF_HEADROOM;
|
|
rxm->ol_flags = 0;
|
|
rxm->vlan_tci = 0;
|
|
|
|
rxm->pkt_len = (uint32_t)(len[i] - hdr_size);
|
|
rxm->data_len = (uint16_t)(len[i] - hdr_size);
|
|
|
|
hdr = (struct virtio_net_hdr *)((char *)rxm->buf_addr +
|
|
RTE_PKTMBUF_HEADROOM - hdr_size);
|
|
|
|
if (hw->vlan_strip)
|
|
rte_vlan_strip(rxm);
|
|
|
|
if (hw->has_rx_offload && virtio_rx_offload(rxm, hdr) < 0) {
|
|
virtio_discard_rxbuf(vq, rxm);
|
|
rxvq->stats.errors++;
|
|
continue;
|
|
}
|
|
|
|
virtio_rx_stats_updated(rxvq, rxm);
|
|
|
|
rx_pkts[nb_rx++] = rxm;
|
|
}
|
|
|
|
rxvq->stats.packets += nb_rx;
|
|
|
|
/* Allocate new mbuf for the used descriptor */
|
|
if (likely(!virtqueue_full(vq))) {
|
|
uint16_t free_cnt = vq->vq_free_cnt;
|
|
struct rte_mbuf *new_pkts[free_cnt];
|
|
|
|
if (likely(rte_pktmbuf_alloc_bulk(rxvq->mpool, new_pkts,
|
|
free_cnt) == 0)) {
|
|
error = virtqueue_enqueue_recv_refill(vq, new_pkts,
|
|
free_cnt);
|
|
if (unlikely(error)) {
|
|
for (i = 0; i < free_cnt; i++)
|
|
rte_pktmbuf_free(new_pkts[i]);
|
|
}
|
|
nb_enqueued += free_cnt;
|
|
} else {
|
|
struct rte_eth_dev *dev =
|
|
&rte_eth_devices[rxvq->port_id];
|
|
dev->data->rx_mbuf_alloc_failed += free_cnt;
|
|
}
|
|
}
|
|
|
|
if (likely(nb_enqueued)) {
|
|
vq_update_avail_idx(vq);
|
|
|
|
if (unlikely(virtqueue_kick_prepare(vq))) {
|
|
virtqueue_notify(vq);
|
|
PMD_RX_LOG(DEBUG, "Notified");
|
|
}
|
|
}
|
|
|
|
return nb_rx;
|
|
}
|
|
|
|
uint16_t
|
|
virtio_recv_pkts_packed(void *rx_queue, struct rte_mbuf **rx_pkts,
|
|
uint16_t nb_pkts)
|
|
{
|
|
struct virtnet_rx *rxvq = rx_queue;
|
|
struct virtqueue *vq = rxvq->vq;
|
|
struct virtio_hw *hw = vq->hw;
|
|
struct rte_mbuf *rxm;
|
|
uint16_t num, nb_rx;
|
|
uint32_t len[VIRTIO_MBUF_BURST_SZ];
|
|
struct rte_mbuf *rcv_pkts[VIRTIO_MBUF_BURST_SZ];
|
|
int error;
|
|
uint32_t i, nb_enqueued;
|
|
uint32_t hdr_size;
|
|
struct virtio_net_hdr *hdr;
|
|
|
|
nb_rx = 0;
|
|
if (unlikely(hw->started == 0))
|
|
return nb_rx;
|
|
|
|
num = RTE_MIN(VIRTIO_MBUF_BURST_SZ, nb_pkts);
|
|
if (likely(num > DESC_PER_CACHELINE))
|
|
num = num - ((vq->vq_used_cons_idx + num) % DESC_PER_CACHELINE);
|
|
|
|
num = virtqueue_dequeue_burst_rx_packed(vq, rcv_pkts, len, num);
|
|
PMD_RX_LOG(DEBUG, "dequeue:%d", num);
|
|
|
|
nb_enqueued = 0;
|
|
hdr_size = hw->vtnet_hdr_size;
|
|
|
|
for (i = 0; i < num; i++) {
|
|
rxm = rcv_pkts[i];
|
|
|
|
PMD_RX_LOG(DEBUG, "packet len:%d", len[i]);
|
|
|
|
if (unlikely(len[i] < hdr_size + RTE_ETHER_HDR_LEN)) {
|
|
PMD_RX_LOG(ERR, "Packet drop");
|
|
nb_enqueued++;
|
|
virtio_discard_rxbuf(vq, rxm);
|
|
rxvq->stats.errors++;
|
|
continue;
|
|
}
|
|
|
|
rxm->port = rxvq->port_id;
|
|
rxm->data_off = RTE_PKTMBUF_HEADROOM;
|
|
rxm->ol_flags = 0;
|
|
rxm->vlan_tci = 0;
|
|
|
|
rxm->pkt_len = (uint32_t)(len[i] - hdr_size);
|
|
rxm->data_len = (uint16_t)(len[i] - hdr_size);
|
|
|
|
hdr = (struct virtio_net_hdr *)((char *)rxm->buf_addr +
|
|
RTE_PKTMBUF_HEADROOM - hdr_size);
|
|
|
|
if (hw->vlan_strip)
|
|
rte_vlan_strip(rxm);
|
|
|
|
if (hw->has_rx_offload && virtio_rx_offload(rxm, hdr) < 0) {
|
|
virtio_discard_rxbuf(vq, rxm);
|
|
rxvq->stats.errors++;
|
|
continue;
|
|
}
|
|
|
|
virtio_rx_stats_updated(rxvq, rxm);
|
|
|
|
rx_pkts[nb_rx++] = rxm;
|
|
}
|
|
|
|
rxvq->stats.packets += nb_rx;
|
|
|
|
/* Allocate new mbuf for the used descriptor */
|
|
if (likely(!virtqueue_full(vq))) {
|
|
uint16_t free_cnt = vq->vq_free_cnt;
|
|
struct rte_mbuf *new_pkts[free_cnt];
|
|
|
|
if (likely(rte_pktmbuf_alloc_bulk(rxvq->mpool, new_pkts,
|
|
free_cnt) == 0)) {
|
|
error = virtqueue_enqueue_recv_refill_packed(vq,
|
|
new_pkts, free_cnt);
|
|
if (unlikely(error)) {
|
|
for (i = 0; i < free_cnt; i++)
|
|
rte_pktmbuf_free(new_pkts[i]);
|
|
}
|
|
nb_enqueued += free_cnt;
|
|
} else {
|
|
struct rte_eth_dev *dev =
|
|
&rte_eth_devices[rxvq->port_id];
|
|
dev->data->rx_mbuf_alloc_failed += free_cnt;
|
|
}
|
|
}
|
|
|
|
if (likely(nb_enqueued)) {
|
|
if (unlikely(virtqueue_kick_prepare_packed(vq))) {
|
|
virtqueue_notify(vq);
|
|
PMD_RX_LOG(DEBUG, "Notified");
|
|
}
|
|
}
|
|
|
|
return nb_rx;
|
|
}
|
|
|
|
|
|
uint16_t
|
|
virtio_recv_pkts_inorder(void *rx_queue,
|
|
struct rte_mbuf **rx_pkts,
|
|
uint16_t nb_pkts)
|
|
{
|
|
struct virtnet_rx *rxvq = rx_queue;
|
|
struct virtqueue *vq = rxvq->vq;
|
|
struct virtio_hw *hw = vq->hw;
|
|
struct rte_mbuf *rxm;
|
|
struct rte_mbuf *prev = NULL;
|
|
uint16_t nb_used, num, nb_rx;
|
|
uint32_t len[VIRTIO_MBUF_BURST_SZ];
|
|
struct rte_mbuf *rcv_pkts[VIRTIO_MBUF_BURST_SZ];
|
|
int error;
|
|
uint32_t nb_enqueued;
|
|
uint32_t seg_num;
|
|
uint32_t seg_res;
|
|
uint32_t hdr_size;
|
|
int32_t i;
|
|
|
|
nb_rx = 0;
|
|
if (unlikely(hw->started == 0))
|
|
return nb_rx;
|
|
|
|
nb_used = VIRTQUEUE_NUSED(vq);
|
|
nb_used = RTE_MIN(nb_used, nb_pkts);
|
|
nb_used = RTE_MIN(nb_used, VIRTIO_MBUF_BURST_SZ);
|
|
|
|
virtio_rmb(hw->weak_barriers);
|
|
|
|
PMD_RX_LOG(DEBUG, "used:%d", nb_used);
|
|
|
|
nb_enqueued = 0;
|
|
seg_num = 1;
|
|
seg_res = 0;
|
|
hdr_size = hw->vtnet_hdr_size;
|
|
|
|
num = virtqueue_dequeue_rx_inorder(vq, rcv_pkts, len, nb_used);
|
|
|
|
for (i = 0; i < num; i++) {
|
|
struct virtio_net_hdr_mrg_rxbuf *header;
|
|
|
|
PMD_RX_LOG(DEBUG, "dequeue:%d", num);
|
|
PMD_RX_LOG(DEBUG, "packet len:%d", len[i]);
|
|
|
|
rxm = rcv_pkts[i];
|
|
|
|
if (unlikely(len[i] < hdr_size + RTE_ETHER_HDR_LEN)) {
|
|
PMD_RX_LOG(ERR, "Packet drop");
|
|
nb_enqueued++;
|
|
virtio_discard_rxbuf_inorder(vq, rxm);
|
|
rxvq->stats.errors++;
|
|
continue;
|
|
}
|
|
|
|
header = (struct virtio_net_hdr_mrg_rxbuf *)
|
|
((char *)rxm->buf_addr + RTE_PKTMBUF_HEADROOM
|
|
- hdr_size);
|
|
|
|
if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
|
|
seg_num = header->num_buffers;
|
|
if (seg_num == 0)
|
|
seg_num = 1;
|
|
} else {
|
|
seg_num = 1;
|
|
}
|
|
|
|
rxm->data_off = RTE_PKTMBUF_HEADROOM;
|
|
rxm->nb_segs = seg_num;
|
|
rxm->ol_flags = 0;
|
|
rxm->vlan_tci = 0;
|
|
rxm->pkt_len = (uint32_t)(len[i] - hdr_size);
|
|
rxm->data_len = (uint16_t)(len[i] - hdr_size);
|
|
|
|
rxm->port = rxvq->port_id;
|
|
|
|
rx_pkts[nb_rx] = rxm;
|
|
prev = rxm;
|
|
|
|
if (vq->hw->has_rx_offload &&
|
|
virtio_rx_offload(rxm, &header->hdr) < 0) {
|
|
virtio_discard_rxbuf_inorder(vq, rxm);
|
|
rxvq->stats.errors++;
|
|
continue;
|
|
}
|
|
|
|
if (hw->vlan_strip)
|
|
rte_vlan_strip(rx_pkts[nb_rx]);
|
|
|
|
seg_res = seg_num - 1;
|
|
|
|
/* Merge remaining segments */
|
|
while (seg_res != 0 && i < (num - 1)) {
|
|
i++;
|
|
|
|
rxm = rcv_pkts[i];
|
|
rxm->data_off = RTE_PKTMBUF_HEADROOM - hdr_size;
|
|
rxm->pkt_len = (uint32_t)(len[i]);
|
|
rxm->data_len = (uint16_t)(len[i]);
|
|
|
|
rx_pkts[nb_rx]->pkt_len += (uint32_t)(len[i]);
|
|
|
|
prev->next = rxm;
|
|
prev = rxm;
|
|
seg_res -= 1;
|
|
}
|
|
|
|
if (!seg_res) {
|
|
virtio_rx_stats_updated(rxvq, rx_pkts[nb_rx]);
|
|
nb_rx++;
|
|
}
|
|
}
|
|
|
|
/* Last packet still need merge segments */
|
|
while (seg_res != 0) {
|
|
uint16_t rcv_cnt = RTE_MIN((uint16_t)seg_res,
|
|
VIRTIO_MBUF_BURST_SZ);
|
|
|
|
if (likely(VIRTQUEUE_NUSED(vq) >= rcv_cnt)) {
|
|
virtio_rmb(hw->weak_barriers);
|
|
num = virtqueue_dequeue_rx_inorder(vq, rcv_pkts, len,
|
|
rcv_cnt);
|
|
uint16_t extra_idx = 0;
|
|
|
|
rcv_cnt = num;
|
|
while (extra_idx < rcv_cnt) {
|
|
rxm = rcv_pkts[extra_idx];
|
|
rxm->data_off =
|
|
RTE_PKTMBUF_HEADROOM - hdr_size;
|
|
rxm->pkt_len = (uint32_t)(len[extra_idx]);
|
|
rxm->data_len = (uint16_t)(len[extra_idx]);
|
|
prev->next = rxm;
|
|
prev = rxm;
|
|
rx_pkts[nb_rx]->pkt_len += len[extra_idx];
|
|
extra_idx += 1;
|
|
};
|
|
seg_res -= rcv_cnt;
|
|
|
|
if (!seg_res) {
|
|
virtio_rx_stats_updated(rxvq, rx_pkts[nb_rx]);
|
|
nb_rx++;
|
|
}
|
|
} else {
|
|
PMD_RX_LOG(ERR,
|
|
"No enough segments for packet.");
|
|
rte_pktmbuf_free(rx_pkts[nb_rx]);
|
|
rxvq->stats.errors++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
rxvq->stats.packets += nb_rx;
|
|
|
|
/* Allocate new mbuf for the used descriptor */
|
|
|
|
if (likely(!virtqueue_full(vq))) {
|
|
/* free_cnt may include mrg descs */
|
|
uint16_t free_cnt = vq->vq_free_cnt;
|
|
struct rte_mbuf *new_pkts[free_cnt];
|
|
|
|
if (!rte_pktmbuf_alloc_bulk(rxvq->mpool, new_pkts, free_cnt)) {
|
|
error = virtqueue_enqueue_refill_inorder(vq, new_pkts,
|
|
free_cnt);
|
|
if (unlikely(error)) {
|
|
for (i = 0; i < free_cnt; i++)
|
|
rte_pktmbuf_free(new_pkts[i]);
|
|
}
|
|
nb_enqueued += free_cnt;
|
|
} else {
|
|
struct rte_eth_dev *dev =
|
|
&rte_eth_devices[rxvq->port_id];
|
|
dev->data->rx_mbuf_alloc_failed += free_cnt;
|
|
}
|
|
}
|
|
|
|
if (likely(nb_enqueued)) {
|
|
vq_update_avail_idx(vq);
|
|
|
|
if (unlikely(virtqueue_kick_prepare(vq))) {
|
|
virtqueue_notify(vq);
|
|
PMD_RX_LOG(DEBUG, "Notified");
|
|
}
|
|
}
|
|
|
|
return nb_rx;
|
|
}
|
|
|
|
uint16_t
|
|
virtio_recv_mergeable_pkts(void *rx_queue,
|
|
struct rte_mbuf **rx_pkts,
|
|
uint16_t nb_pkts)
|
|
{
|
|
struct virtnet_rx *rxvq = rx_queue;
|
|
struct virtqueue *vq = rxvq->vq;
|
|
struct virtio_hw *hw = vq->hw;
|
|
struct rte_mbuf *rxm;
|
|
struct rte_mbuf *prev = NULL;
|
|
uint16_t nb_used, num, nb_rx = 0;
|
|
uint32_t len[VIRTIO_MBUF_BURST_SZ];
|
|
struct rte_mbuf *rcv_pkts[VIRTIO_MBUF_BURST_SZ];
|
|
int error;
|
|
uint32_t nb_enqueued = 0;
|
|
uint32_t seg_num = 0;
|
|
uint32_t seg_res = 0;
|
|
uint32_t hdr_size = hw->vtnet_hdr_size;
|
|
int32_t i;
|
|
|
|
if (unlikely(hw->started == 0))
|
|
return nb_rx;
|
|
|
|
nb_used = VIRTQUEUE_NUSED(vq);
|
|
|
|
virtio_rmb(hw->weak_barriers);
|
|
|
|
PMD_RX_LOG(DEBUG, "used:%d", nb_used);
|
|
|
|
num = likely(nb_used <= nb_pkts) ? nb_used : nb_pkts;
|
|
if (unlikely(num > VIRTIO_MBUF_BURST_SZ))
|
|
num = VIRTIO_MBUF_BURST_SZ;
|
|
if (likely(num > DESC_PER_CACHELINE))
|
|
num = num - ((vq->vq_used_cons_idx + num) %
|
|
DESC_PER_CACHELINE);
|
|
|
|
|
|
num = virtqueue_dequeue_burst_rx(vq, rcv_pkts, len, num);
|
|
|
|
for (i = 0; i < num; i++) {
|
|
struct virtio_net_hdr_mrg_rxbuf *header;
|
|
|
|
PMD_RX_LOG(DEBUG, "dequeue:%d", num);
|
|
PMD_RX_LOG(DEBUG, "packet len:%d", len[i]);
|
|
|
|
rxm = rcv_pkts[i];
|
|
|
|
if (unlikely(len[i] < hdr_size + RTE_ETHER_HDR_LEN)) {
|
|
PMD_RX_LOG(ERR, "Packet drop");
|
|
nb_enqueued++;
|
|
virtio_discard_rxbuf(vq, rxm);
|
|
rxvq->stats.errors++;
|
|
continue;
|
|
}
|
|
|
|
header = (struct virtio_net_hdr_mrg_rxbuf *)
|
|
((char *)rxm->buf_addr + RTE_PKTMBUF_HEADROOM
|
|
- hdr_size);
|
|
seg_num = header->num_buffers;
|
|
if (seg_num == 0)
|
|
seg_num = 1;
|
|
|
|
rxm->data_off = RTE_PKTMBUF_HEADROOM;
|
|
rxm->nb_segs = seg_num;
|
|
rxm->ol_flags = 0;
|
|
rxm->vlan_tci = 0;
|
|
rxm->pkt_len = (uint32_t)(len[i] - hdr_size);
|
|
rxm->data_len = (uint16_t)(len[i] - hdr_size);
|
|
|
|
rxm->port = rxvq->port_id;
|
|
|
|
rx_pkts[nb_rx] = rxm;
|
|
prev = rxm;
|
|
|
|
if (hw->has_rx_offload &&
|
|
virtio_rx_offload(rxm, &header->hdr) < 0) {
|
|
virtio_discard_rxbuf(vq, rxm);
|
|
rxvq->stats.errors++;
|
|
continue;
|
|
}
|
|
|
|
if (hw->vlan_strip)
|
|
rte_vlan_strip(rx_pkts[nb_rx]);
|
|
|
|
seg_res = seg_num - 1;
|
|
|
|
/* Merge remaining segments */
|
|
while (seg_res != 0 && i < (num - 1)) {
|
|
i++;
|
|
|
|
rxm = rcv_pkts[i];
|
|
rxm->data_off = RTE_PKTMBUF_HEADROOM - hdr_size;
|
|
rxm->pkt_len = (uint32_t)(len[i]);
|
|
rxm->data_len = (uint16_t)(len[i]);
|
|
|
|
rx_pkts[nb_rx]->pkt_len += (uint32_t)(len[i]);
|
|
|
|
prev->next = rxm;
|
|
prev = rxm;
|
|
seg_res -= 1;
|
|
}
|
|
|
|
if (!seg_res) {
|
|
virtio_rx_stats_updated(rxvq, rx_pkts[nb_rx]);
|
|
nb_rx++;
|
|
}
|
|
}
|
|
|
|
/* Last packet still need merge segments */
|
|
while (seg_res != 0) {
|
|
uint16_t rcv_cnt = RTE_MIN((uint16_t)seg_res,
|
|
VIRTIO_MBUF_BURST_SZ);
|
|
|
|
if (likely(VIRTQUEUE_NUSED(vq) >= rcv_cnt)) {
|
|
virtio_rmb(hw->weak_barriers);
|
|
num = virtqueue_dequeue_burst_rx(vq, rcv_pkts, len,
|
|
rcv_cnt);
|
|
uint16_t extra_idx = 0;
|
|
|
|
rcv_cnt = num;
|
|
while (extra_idx < rcv_cnt) {
|
|
rxm = rcv_pkts[extra_idx];
|
|
rxm->data_off =
|
|
RTE_PKTMBUF_HEADROOM - hdr_size;
|
|
rxm->pkt_len = (uint32_t)(len[extra_idx]);
|
|
rxm->data_len = (uint16_t)(len[extra_idx]);
|
|
prev->next = rxm;
|
|
prev = rxm;
|
|
rx_pkts[nb_rx]->pkt_len += len[extra_idx];
|
|
extra_idx += 1;
|
|
};
|
|
seg_res -= rcv_cnt;
|
|
|
|
if (!seg_res) {
|
|
virtio_rx_stats_updated(rxvq, rx_pkts[nb_rx]);
|
|
nb_rx++;
|
|
}
|
|
} else {
|
|
PMD_RX_LOG(ERR,
|
|
"No enough segments for packet.");
|
|
rte_pktmbuf_free(rx_pkts[nb_rx]);
|
|
rxvq->stats.errors++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
rxvq->stats.packets += nb_rx;
|
|
|
|
/* Allocate new mbuf for the used descriptor */
|
|
if (likely(!virtqueue_full(vq))) {
|
|
/* free_cnt may include mrg descs */
|
|
uint16_t free_cnt = vq->vq_free_cnt;
|
|
struct rte_mbuf *new_pkts[free_cnt];
|
|
|
|
if (!rte_pktmbuf_alloc_bulk(rxvq->mpool, new_pkts, free_cnt)) {
|
|
error = virtqueue_enqueue_recv_refill(vq, new_pkts,
|
|
free_cnt);
|
|
if (unlikely(error)) {
|
|
for (i = 0; i < free_cnt; i++)
|
|
rte_pktmbuf_free(new_pkts[i]);
|
|
}
|
|
nb_enqueued += free_cnt;
|
|
} else {
|
|
struct rte_eth_dev *dev =
|
|
&rte_eth_devices[rxvq->port_id];
|
|
dev->data->rx_mbuf_alloc_failed += free_cnt;
|
|
}
|
|
}
|
|
|
|
if (likely(nb_enqueued)) {
|
|
vq_update_avail_idx(vq);
|
|
|
|
if (unlikely(virtqueue_kick_prepare(vq))) {
|
|
virtqueue_notify(vq);
|
|
PMD_RX_LOG(DEBUG, "Notified");
|
|
}
|
|
}
|
|
|
|
return nb_rx;
|
|
}
|
|
|
|
uint16_t
|
|
virtio_recv_mergeable_pkts_packed(void *rx_queue,
|
|
struct rte_mbuf **rx_pkts,
|
|
uint16_t nb_pkts)
|
|
{
|
|
struct virtnet_rx *rxvq = rx_queue;
|
|
struct virtqueue *vq = rxvq->vq;
|
|
struct virtio_hw *hw = vq->hw;
|
|
struct rte_mbuf *rxm;
|
|
struct rte_mbuf *prev = NULL;
|
|
uint16_t num, nb_rx = 0;
|
|
uint32_t len[VIRTIO_MBUF_BURST_SZ];
|
|
struct rte_mbuf *rcv_pkts[VIRTIO_MBUF_BURST_SZ];
|
|
uint32_t nb_enqueued = 0;
|
|
uint32_t seg_num = 0;
|
|
uint32_t seg_res = 0;
|
|
uint32_t hdr_size = hw->vtnet_hdr_size;
|
|
int32_t i;
|
|
int error;
|
|
|
|
if (unlikely(hw->started == 0))
|
|
return nb_rx;
|
|
|
|
|
|
num = nb_pkts;
|
|
if (unlikely(num > VIRTIO_MBUF_BURST_SZ))
|
|
num = VIRTIO_MBUF_BURST_SZ;
|
|
if (likely(num > DESC_PER_CACHELINE))
|
|
num = num - ((vq->vq_used_cons_idx + num) % DESC_PER_CACHELINE);
|
|
|
|
num = virtqueue_dequeue_burst_rx_packed(vq, rcv_pkts, len, num);
|
|
|
|
for (i = 0; i < num; i++) {
|
|
struct virtio_net_hdr_mrg_rxbuf *header;
|
|
|
|
PMD_RX_LOG(DEBUG, "dequeue:%d", num);
|
|
PMD_RX_LOG(DEBUG, "packet len:%d", len[i]);
|
|
|
|
rxm = rcv_pkts[i];
|
|
|
|
if (unlikely(len[i] < hdr_size + RTE_ETHER_HDR_LEN)) {
|
|
PMD_RX_LOG(ERR, "Packet drop");
|
|
nb_enqueued++;
|
|
virtio_discard_rxbuf(vq, rxm);
|
|
rxvq->stats.errors++;
|
|
continue;
|
|
}
|
|
|
|
header = (struct virtio_net_hdr_mrg_rxbuf *)((char *)
|
|
rxm->buf_addr + RTE_PKTMBUF_HEADROOM - hdr_size);
|
|
seg_num = header->num_buffers;
|
|
|
|
if (seg_num == 0)
|
|
seg_num = 1;
|
|
|
|
rxm->data_off = RTE_PKTMBUF_HEADROOM;
|
|
rxm->nb_segs = seg_num;
|
|
rxm->ol_flags = 0;
|
|
rxm->vlan_tci = 0;
|
|
rxm->pkt_len = (uint32_t)(len[i] - hdr_size);
|
|
rxm->data_len = (uint16_t)(len[i] - hdr_size);
|
|
|
|
rxm->port = rxvq->port_id;
|
|
rx_pkts[nb_rx] = rxm;
|
|
prev = rxm;
|
|
|
|
if (hw->has_rx_offload &&
|
|
virtio_rx_offload(rxm, &header->hdr) < 0) {
|
|
virtio_discard_rxbuf(vq, rxm);
|
|
rxvq->stats.errors++;
|
|
continue;
|
|
}
|
|
|
|
if (hw->vlan_strip)
|
|
rte_vlan_strip(rx_pkts[nb_rx]);
|
|
|
|
seg_res = seg_num - 1;
|
|
|
|
/* Merge remaining segments */
|
|
while (seg_res != 0 && i < (num - 1)) {
|
|
i++;
|
|
|
|
rxm = rcv_pkts[i];
|
|
rxm->data_off = RTE_PKTMBUF_HEADROOM - hdr_size;
|
|
rxm->pkt_len = (uint32_t)(len[i]);
|
|
rxm->data_len = (uint16_t)(len[i]);
|
|
|
|
rx_pkts[nb_rx]->pkt_len += (uint32_t)(len[i]);
|
|
|
|
prev->next = rxm;
|
|
prev = rxm;
|
|
seg_res -= 1;
|
|
}
|
|
|
|
if (!seg_res) {
|
|
virtio_rx_stats_updated(rxvq, rx_pkts[nb_rx]);
|
|
nb_rx++;
|
|
}
|
|
}
|
|
|
|
/* Last packet still need merge segments */
|
|
while (seg_res != 0) {
|
|
uint16_t rcv_cnt = RTE_MIN((uint16_t)seg_res,
|
|
VIRTIO_MBUF_BURST_SZ);
|
|
uint16_t extra_idx = 0;
|
|
|
|
rcv_cnt = virtqueue_dequeue_burst_rx_packed(vq, rcv_pkts,
|
|
len, rcv_cnt);
|
|
if (unlikely(rcv_cnt == 0)) {
|
|
PMD_RX_LOG(ERR, "No enough segments for packet.");
|
|
rte_pktmbuf_free(rx_pkts[nb_rx]);
|
|
rxvq->stats.errors++;
|
|
break;
|
|
}
|
|
|
|
while (extra_idx < rcv_cnt) {
|
|
rxm = rcv_pkts[extra_idx];
|
|
|
|
rxm->data_off = RTE_PKTMBUF_HEADROOM - hdr_size;
|
|
rxm->pkt_len = (uint32_t)(len[extra_idx]);
|
|
rxm->data_len = (uint16_t)(len[extra_idx]);
|
|
|
|
prev->next = rxm;
|
|
prev = rxm;
|
|
rx_pkts[nb_rx]->pkt_len += len[extra_idx];
|
|
extra_idx += 1;
|
|
}
|
|
seg_res -= rcv_cnt;
|
|
if (!seg_res) {
|
|
virtio_rx_stats_updated(rxvq, rx_pkts[nb_rx]);
|
|
nb_rx++;
|
|
}
|
|
}
|
|
|
|
rxvq->stats.packets += nb_rx;
|
|
|
|
/* Allocate new mbuf for the used descriptor */
|
|
if (likely(!virtqueue_full(vq))) {
|
|
/* free_cnt may include mrg descs */
|
|
uint16_t free_cnt = vq->vq_free_cnt;
|
|
struct rte_mbuf *new_pkts[free_cnt];
|
|
|
|
if (!rte_pktmbuf_alloc_bulk(rxvq->mpool, new_pkts, free_cnt)) {
|
|
error = virtqueue_enqueue_recv_refill_packed(vq,
|
|
new_pkts, free_cnt);
|
|
if (unlikely(error)) {
|
|
for (i = 0; i < free_cnt; i++)
|
|
rte_pktmbuf_free(new_pkts[i]);
|
|
}
|
|
nb_enqueued += free_cnt;
|
|
} else {
|
|
struct rte_eth_dev *dev =
|
|
&rte_eth_devices[rxvq->port_id];
|
|
dev->data->rx_mbuf_alloc_failed += free_cnt;
|
|
}
|
|
}
|
|
|
|
if (likely(nb_enqueued)) {
|
|
if (unlikely(virtqueue_kick_prepare_packed(vq))) {
|
|
virtqueue_notify(vq);
|
|
PMD_RX_LOG(DEBUG, "Notified");
|
|
}
|
|
}
|
|
|
|
return nb_rx;
|
|
}
|
|
|
|
uint16_t
|
|
virtio_xmit_pkts_prepare(void *tx_queue __rte_unused, struct rte_mbuf **tx_pkts,
|
|
uint16_t nb_pkts)
|
|
{
|
|
uint16_t nb_tx;
|
|
int error;
|
|
|
|
for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
|
|
struct rte_mbuf *m = tx_pkts[nb_tx];
|
|
|
|
#ifdef RTE_LIBRTE_ETHDEV_DEBUG
|
|
error = rte_validate_tx_offload(m);
|
|
if (unlikely(error)) {
|
|
rte_errno = -error;
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
/* Do VLAN tag insertion */
|
|
if (unlikely(m->ol_flags & PKT_TX_VLAN_PKT)) {
|
|
error = rte_vlan_insert(&m);
|
|
/* rte_vlan_insert() may change pointer
|
|
* even in the case of failure
|
|
*/
|
|
tx_pkts[nb_tx] = m;
|
|
|
|
if (unlikely(error)) {
|
|
rte_errno = -error;
|
|
break;
|
|
}
|
|
}
|
|
|
|
error = rte_net_intel_cksum_prepare(m);
|
|
if (unlikely(error)) {
|
|
rte_errno = -error;
|
|
break;
|
|
}
|
|
|
|
if (m->ol_flags & PKT_TX_TCP_SEG)
|
|
virtio_tso_fix_cksum(m);
|
|
}
|
|
|
|
return nb_tx;
|
|
}
|
|
|
|
uint16_t
|
|
virtio_xmit_pkts_packed(void *tx_queue, struct rte_mbuf **tx_pkts,
|
|
uint16_t nb_pkts)
|
|
{
|
|
struct virtnet_tx *txvq = tx_queue;
|
|
struct virtqueue *vq = txvq->vq;
|
|
struct virtio_hw *hw = vq->hw;
|
|
uint16_t hdr_size = hw->vtnet_hdr_size;
|
|
uint16_t nb_tx = 0;
|
|
bool in_order = vtpci_with_feature(hw, VIRTIO_F_IN_ORDER);
|
|
|
|
if (unlikely(hw->started == 0 && tx_pkts != hw->inject_pkts))
|
|
return nb_tx;
|
|
|
|
if (unlikely(nb_pkts < 1))
|
|
return nb_pkts;
|
|
|
|
PMD_TX_LOG(DEBUG, "%d packets to xmit", nb_pkts);
|
|
|
|
if (nb_pkts > vq->vq_free_cnt)
|
|
virtio_xmit_cleanup_packed(vq, nb_pkts - vq->vq_free_cnt,
|
|
in_order);
|
|
|
|
for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
|
|
struct rte_mbuf *txm = tx_pkts[nb_tx];
|
|
int can_push = 0, slots, need;
|
|
|
|
/* optimize ring usage */
|
|
if ((vtpci_with_feature(hw, VIRTIO_F_ANY_LAYOUT) ||
|
|
vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) &&
|
|
rte_mbuf_refcnt_read(txm) == 1 &&
|
|
RTE_MBUF_DIRECT(txm) &&
|
|
txm->nb_segs == 1 &&
|
|
rte_pktmbuf_headroom(txm) >= hdr_size &&
|
|
rte_is_aligned(rte_pktmbuf_mtod(txm, char *),
|
|
__alignof__(struct virtio_net_hdr_mrg_rxbuf)))
|
|
can_push = 1;
|
|
|
|
/* How many main ring entries are needed to this Tx?
|
|
* any_layout => number of segments
|
|
* default => number of segments + 1
|
|
*/
|
|
slots = txm->nb_segs + !can_push;
|
|
need = slots - vq->vq_free_cnt;
|
|
|
|
/* Positive value indicates it need free vring descriptors */
|
|
if (unlikely(need > 0)) {
|
|
virtio_xmit_cleanup_packed(vq, need, in_order);
|
|
need = slots - vq->vq_free_cnt;
|
|
if (unlikely(need > 0)) {
|
|
PMD_TX_LOG(ERR,
|
|
"No free tx descriptors to transmit");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Enqueue Packet buffers */
|
|
if (can_push)
|
|
virtqueue_enqueue_xmit_packed_fast(txvq, txm, in_order);
|
|
else
|
|
virtqueue_enqueue_xmit_packed(txvq, txm, slots, 0,
|
|
in_order);
|
|
|
|
virtio_update_packet_stats(&txvq->stats, txm);
|
|
}
|
|
|
|
txvq->stats.packets += nb_tx;
|
|
|
|
if (likely(nb_tx)) {
|
|
if (unlikely(virtqueue_kick_prepare_packed(vq))) {
|
|
virtqueue_notify(vq);
|
|
PMD_TX_LOG(DEBUG, "Notified backend after xmit");
|
|
}
|
|
}
|
|
|
|
return nb_tx;
|
|
}
|
|
|
|
uint16_t
|
|
virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
|
|
{
|
|
struct virtnet_tx *txvq = tx_queue;
|
|
struct virtqueue *vq = txvq->vq;
|
|
struct virtio_hw *hw = vq->hw;
|
|
uint16_t hdr_size = hw->vtnet_hdr_size;
|
|
uint16_t nb_used, nb_tx = 0;
|
|
|
|
if (unlikely(hw->started == 0 && tx_pkts != hw->inject_pkts))
|
|
return nb_tx;
|
|
|
|
if (unlikely(nb_pkts < 1))
|
|
return nb_pkts;
|
|
|
|
PMD_TX_LOG(DEBUG, "%d packets to xmit", nb_pkts);
|
|
nb_used = VIRTQUEUE_NUSED(vq);
|
|
|
|
virtio_rmb(hw->weak_barriers);
|
|
if (likely(nb_used > vq->vq_nentries - vq->vq_free_thresh))
|
|
virtio_xmit_cleanup(vq, nb_used);
|
|
|
|
for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
|
|
struct rte_mbuf *txm = tx_pkts[nb_tx];
|
|
int can_push = 0, use_indirect = 0, slots, need;
|
|
|
|
/* optimize ring usage */
|
|
if ((vtpci_with_feature(hw, VIRTIO_F_ANY_LAYOUT) ||
|
|
vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) &&
|
|
rte_mbuf_refcnt_read(txm) == 1 &&
|
|
RTE_MBUF_DIRECT(txm) &&
|
|
txm->nb_segs == 1 &&
|
|
rte_pktmbuf_headroom(txm) >= hdr_size &&
|
|
rte_is_aligned(rte_pktmbuf_mtod(txm, char *),
|
|
__alignof__(struct virtio_net_hdr_mrg_rxbuf)))
|
|
can_push = 1;
|
|
else if (vtpci_with_feature(hw, VIRTIO_RING_F_INDIRECT_DESC) &&
|
|
txm->nb_segs < VIRTIO_MAX_TX_INDIRECT)
|
|
use_indirect = 1;
|
|
|
|
/* How many main ring entries are needed to this Tx?
|
|
* any_layout => number of segments
|
|
* indirect => 1
|
|
* default => number of segments + 1
|
|
*/
|
|
slots = use_indirect ? 1 : (txm->nb_segs + !can_push);
|
|
need = slots - vq->vq_free_cnt;
|
|
|
|
/* Positive value indicates it need free vring descriptors */
|
|
if (unlikely(need > 0)) {
|
|
nb_used = VIRTQUEUE_NUSED(vq);
|
|
virtio_rmb(hw->weak_barriers);
|
|
need = RTE_MIN(need, (int)nb_used);
|
|
|
|
virtio_xmit_cleanup(vq, need);
|
|
need = slots - vq->vq_free_cnt;
|
|
if (unlikely(need > 0)) {
|
|
PMD_TX_LOG(ERR,
|
|
"No free tx descriptors to transmit");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Enqueue Packet buffers */
|
|
virtqueue_enqueue_xmit(txvq, txm, slots, use_indirect,
|
|
can_push, 0);
|
|
|
|
virtio_update_packet_stats(&txvq->stats, txm);
|
|
}
|
|
|
|
txvq->stats.packets += nb_tx;
|
|
|
|
if (likely(nb_tx)) {
|
|
vq_update_avail_idx(vq);
|
|
|
|
if (unlikely(virtqueue_kick_prepare(vq))) {
|
|
virtqueue_notify(vq);
|
|
PMD_TX_LOG(DEBUG, "Notified backend after xmit");
|
|
}
|
|
}
|
|
|
|
return nb_tx;
|
|
}
|
|
|
|
static __rte_always_inline int
|
|
virtio_xmit_try_cleanup_inorder(struct virtqueue *vq, uint16_t need)
|
|
{
|
|
uint16_t nb_used, nb_clean, nb_descs;
|
|
struct virtio_hw *hw = vq->hw;
|
|
|
|
nb_descs = vq->vq_free_cnt + need;
|
|
nb_used = VIRTQUEUE_NUSED(vq);
|
|
virtio_rmb(hw->weak_barriers);
|
|
nb_clean = RTE_MIN(need, (int)nb_used);
|
|
|
|
virtio_xmit_cleanup_inorder(vq, nb_clean);
|
|
|
|
return nb_descs - vq->vq_free_cnt;
|
|
}
|
|
|
|
uint16_t
|
|
virtio_xmit_pkts_inorder(void *tx_queue,
|
|
struct rte_mbuf **tx_pkts,
|
|
uint16_t nb_pkts)
|
|
{
|
|
struct virtnet_tx *txvq = tx_queue;
|
|
struct virtqueue *vq = txvq->vq;
|
|
struct virtio_hw *hw = vq->hw;
|
|
uint16_t hdr_size = hw->vtnet_hdr_size;
|
|
uint16_t nb_used, nb_tx = 0, nb_inorder_pkts = 0;
|
|
struct rte_mbuf *inorder_pkts[nb_pkts];
|
|
int need;
|
|
|
|
if (unlikely(hw->started == 0 && tx_pkts != hw->inject_pkts))
|
|
return nb_tx;
|
|
|
|
if (unlikely(nb_pkts < 1))
|
|
return nb_pkts;
|
|
|
|
VIRTQUEUE_DUMP(vq);
|
|
PMD_TX_LOG(DEBUG, "%d packets to xmit", nb_pkts);
|
|
nb_used = VIRTQUEUE_NUSED(vq);
|
|
|
|
virtio_rmb(hw->weak_barriers);
|
|
if (likely(nb_used > vq->vq_nentries - vq->vq_free_thresh))
|
|
virtio_xmit_cleanup_inorder(vq, nb_used);
|
|
|
|
for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
|
|
struct rte_mbuf *txm = tx_pkts[nb_tx];
|
|
int slots;
|
|
|
|
/* optimize ring usage */
|
|
if ((vtpci_with_feature(hw, VIRTIO_F_ANY_LAYOUT) ||
|
|
vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) &&
|
|
rte_mbuf_refcnt_read(txm) == 1 &&
|
|
RTE_MBUF_DIRECT(txm) &&
|
|
txm->nb_segs == 1 &&
|
|
rte_pktmbuf_headroom(txm) >= hdr_size &&
|
|
rte_is_aligned(rte_pktmbuf_mtod(txm, char *),
|
|
__alignof__(struct virtio_net_hdr_mrg_rxbuf))) {
|
|
inorder_pkts[nb_inorder_pkts] = txm;
|
|
nb_inorder_pkts++;
|
|
|
|
continue;
|
|
}
|
|
|
|
if (nb_inorder_pkts) {
|
|
need = nb_inorder_pkts - vq->vq_free_cnt;
|
|
if (unlikely(need > 0)) {
|
|
need = virtio_xmit_try_cleanup_inorder(vq,
|
|
need);
|
|
if (unlikely(need > 0)) {
|
|
PMD_TX_LOG(ERR,
|
|
"No free tx descriptors to "
|
|
"transmit");
|
|
break;
|
|
}
|
|
}
|
|
virtqueue_enqueue_xmit_inorder(txvq, inorder_pkts,
|
|
nb_inorder_pkts);
|
|
nb_inorder_pkts = 0;
|
|
}
|
|
|
|
slots = txm->nb_segs + 1;
|
|
need = slots - vq->vq_free_cnt;
|
|
if (unlikely(need > 0)) {
|
|
need = virtio_xmit_try_cleanup_inorder(vq, slots);
|
|
|
|
if (unlikely(need > 0)) {
|
|
PMD_TX_LOG(ERR,
|
|
"No free tx descriptors to transmit");
|
|
break;
|
|
}
|
|
}
|
|
/* Enqueue Packet buffers */
|
|
virtqueue_enqueue_xmit(txvq, txm, slots, 0, 0, 1);
|
|
|
|
virtio_update_packet_stats(&txvq->stats, txm);
|
|
}
|
|
|
|
/* Transmit all inorder packets */
|
|
if (nb_inorder_pkts) {
|
|
need = nb_inorder_pkts - vq->vq_free_cnt;
|
|
if (unlikely(need > 0)) {
|
|
need = virtio_xmit_try_cleanup_inorder(vq,
|
|
need);
|
|
if (unlikely(need > 0)) {
|
|
PMD_TX_LOG(ERR,
|
|
"No free tx descriptors to transmit");
|
|
nb_inorder_pkts = vq->vq_free_cnt;
|
|
nb_tx -= need;
|
|
}
|
|
}
|
|
|
|
virtqueue_enqueue_xmit_inorder(txvq, inorder_pkts,
|
|
nb_inorder_pkts);
|
|
}
|
|
|
|
txvq->stats.packets += nb_tx;
|
|
|
|
if (likely(nb_tx)) {
|
|
vq_update_avail_idx(vq);
|
|
|
|
if (unlikely(virtqueue_kick_prepare(vq))) {
|
|
virtqueue_notify(vq);
|
|
PMD_TX_LOG(DEBUG, "Notified backend after xmit");
|
|
}
|
|
}
|
|
|
|
VIRTQUEUE_DUMP(vq);
|
|
|
|
return nb_tx;
|
|
}
|
|
|
|
#ifndef CC_AVX512_SUPPORT
|
|
uint16_t
|
|
virtio_recv_pkts_packed_vec(void *rx_queue __rte_unused,
|
|
struct rte_mbuf **rx_pkts __rte_unused,
|
|
uint16_t nb_pkts __rte_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
uint16_t
|
|
virtio_xmit_pkts_packed_vec(void *tx_queue __rte_unused,
|
|
struct rte_mbuf **tx_pkts __rte_unused,
|
|
uint16_t nb_pkts __rte_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* ifndef CC_AVX512_SUPPORT */
|