[dpdk-dev] [PATCH v3 2/4] examples/vhost: use a new API to query remaining ring space

[Wenwu Ma]

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>
---
 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 2a2c2d7202..bf4e033bdb 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