17043a2909
At least Vhost-user backend of Virtio-user PMD requires IOVA as VA mode. Until now, it was implemented as a hack by forcing to use mbuf's buf_addr field instead of buf_iova. This patch removes all this logic and just fails probing if IOVA as VA mode is not selected. It simplifies the code overall, and removes some bus-specific logic from generic virtio_ethdev.c. Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2016 Intel Corporation
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*/
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#ifndef _VIRTIO_RXTX_SIMPLE_H_
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#define _VIRTIO_RXTX_SIMPLE_H_
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#include <stdint.h>
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#include "virtio_logs.h"
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#include "virtio_ethdev.h"
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#include "virtqueue.h"
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#include "virtio_rxtx.h"
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#define RTE_VIRTIO_VPMD_RX_BURST 32
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#define RTE_VIRTIO_VPMD_RX_REARM_THRESH RTE_VIRTIO_VPMD_RX_BURST
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static inline void
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virtio_rxq_rearm_vec(struct virtnet_rx *rxvq)
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{
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int i;
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uint16_t desc_idx;
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struct rte_mbuf **sw_ring;
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struct vring_desc *start_dp;
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int ret;
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struct virtqueue *vq = rxvq->vq;
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desc_idx = vq->vq_avail_idx & (vq->vq_nentries - 1);
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sw_ring = &vq->sw_ring[desc_idx];
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start_dp = &vq->vq_split.ring.desc[desc_idx];
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ret = rte_mempool_get_bulk(rxvq->mpool, (void **)sw_ring,
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RTE_VIRTIO_VPMD_RX_REARM_THRESH);
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if (unlikely(ret)) {
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rte_eth_devices[rxvq->port_id].data->rx_mbuf_alloc_failed +=
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RTE_VIRTIO_VPMD_RX_REARM_THRESH;
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return;
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}
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for (i = 0; i < RTE_VIRTIO_VPMD_RX_REARM_THRESH; i++) {
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uintptr_t p;
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p = (uintptr_t)&sw_ring[i]->rearm_data;
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*(uint64_t *)p = rxvq->mbuf_initializer;
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start_dp[i].addr = sw_ring[i]->buf_iova +
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RTE_PKTMBUF_HEADROOM - vq->hw->vtnet_hdr_size;
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start_dp[i].len = sw_ring[i]->buf_len -
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RTE_PKTMBUF_HEADROOM + vq->hw->vtnet_hdr_size;
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}
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vq->vq_avail_idx += RTE_VIRTIO_VPMD_RX_REARM_THRESH;
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vq->vq_free_cnt -= RTE_VIRTIO_VPMD_RX_REARM_THRESH;
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vq_update_avail_idx(vq);
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}
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#endif /* _VIRTIO_RXTX_SIMPLE_H_ */
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