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vhost: fix sync dequeue offload

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This patch fixes the missing virtio net header copy in sync
dequeue path caused by refactoring, which affects dequeue
offloading.

Fixes: 6d823bb302 ("vhost: prepare sync for descriptor to mbuf refactoring")

Signed-off-by: Xuan Ding <xuan.ding@intel.com>
Tested-by: Wei Ling <weix.ling@intel.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
This commit is contained in:
Xuan Ding 2022-06-24 05:38:24 +00:00 committed by Maxime Coquelin
parent c8a3ee49c9
commit b6eee3e834
1 changed files with 11 additions and 3 deletions
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14
lib/vhost/virtio_net.c
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@ -2724,9 +2724,17 @@ desc_to_mbuf(struct virtio_net *dev, struct vhost_virtqueue *vq,
buf_iova + buf_offset, cpy_len, false) < 0)
goto error;
} else {
sync_fill_seg(dev, vq, cur, mbuf_offset,
buf_addr + buf_offset,
buf_iova + buf_offset, cpy_len, false);
if (hdr && cur == m) {
rte_memcpy(rte_pktmbuf_mtod_offset(cur, void *, mbuf_offset),
(void *)((uintptr_t)(buf_addr + buf_offset)),
cpy_len);
vhost_log_cache_write_iova(dev, vq, buf_iova + buf_offset, cpy_len);
PRINT_PACKET(dev, (uintptr_t)(buf_addr + buf_offset), cpy_len, 0);
} else {
sync_fill_seg(dev, vq, cur, mbuf_offset,
buf_addr + buf_offset,
buf_iova + buf_offset, cpy_len, false);
}
}
mbuf_avail -= cpy_len;