> -----Original Message-----
> From: Ma, WenwuX <wenwux...@intel.com>
> Sent: Tuesday, September 7, 2021 4:49 AM
> To: dev@dpdk.org
> Cc: maxime.coque...@redhat.com; Xia, Chenbo <chenbo....@intel.com>; Jiang,
> Cheng1 <cheng1.ji...@intel.com>; Hu, Jiayu <jiayu...@intel.com>; Pai G, Sunil
> <sunil.pa...@intel.com>; Yang, YvonneX <yvonnex.y...@intel.com>; Ma, WenwuX
> <wenwux...@intel.com>
> Subject: [PATCH 3/4] examples/vhost: use a new API to query remaining ring
> space
>
> A new API for querying the remaining descriptor ring capacity
> is available, so we use the new one instead of the old one.
>
> Signed-off-by: Wenwu Ma <wenwux...@intel.com>
> Reviewed-by: Maxime Coquelin <maxime.coque...@redhat.com>
> ---
> examples/vhost/ioat.c | 6 +-----
> 1 file changed, 1 insertion(+), 5 deletions(-)
>
> diff --git a/examples/vhost/ioat.c b/examples/vhost/ioat.c
> index 457f8171f0..6adc30b622 100644
> --- a/examples/vhost/ioat.c
> +++ b/examples/vhost/ioat.c
> @@ -17,7 +17,6 @@ struct packet_tracker {
> unsigned short next_read;
> unsigned short next_write;
> unsigned short last_remain;
> - unsigned short ioat_space;
> };
>
> struct packet_tracker cb_tracker[MAX_VHOST_DEVICE];
> @@ -113,7 +112,6 @@ open_ioat(const char *value)
> goto out;
> }
> rte_rawdev_start(dev_id);
> - cb_tracker[dev_id].ioat_space = IOAT_RING_SIZE - 1;
> dma_info->nr++;
> i++;
> }
> @@ -140,7 +138,7 @@ ioat_transfer_data_cb(int vid, uint16_t queue_id,
> src = descs[i_desc].src;
> dst = descs[i_desc].dst;
> i_seg = 0;
> - if (cb_tracker[dev_id].ioat_space < src->nr_segs)
> + if (rte_ioat_burst_capacity(dev_id) < src->nr_segs)
> break;
> while (i_seg < src->nr_segs) {
> rte_ioat_enqueue_copy(dev_id,
> @@ -155,7 +153,6 @@ ioat_transfer_data_cb(int vid, uint16_t queue_id,
> }
> write &= mask;
> cb_tracker[dev_id].size_track[write] = src->nr_segs;
> - cb_tracker[dev_id].ioat_space -= src->nr_segs;
> write++;
> }
> } else {
> @@ -194,7 +191,6 @@ ioat_check_completed_copies_cb(int vid, uint16_t queue_id,
> if (n_seg == 0)
> return 0;
>
> - cb_tracker[dev_id].ioat_space += n_seg;
> n_seg += cb_tracker[dev_id].last_remain;
>
> read = cb_tracker[dev_id].next_read;
> --
> 2.25.1
Reviewed-by: Chenbo Xia <chenbo....@intel.com>
