diff mbox series

[1/5] common/sfc_efx/base: remove VQ index check during VQ start

Message ID 20220714075202.31826-1-asaini@xilinx.com (mailing list archive)
State Superseded, archived
Headers
Series [1/5] common/sfc_efx/base: remove VQ index check during VQ start |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

abhimanyu.saini@xilinx.com July 14, 2022, 7:51 a.m. UTC 
  From: Abhimanyu Saini <absaini@amd.com>

The used/avail queue indexes are not bound by queue
size, because H/W calculates descriptor entry index
by performing a simple modulo between queue index and
queue_size

So, do not check initial used and avail queue indexes
against queue size because it is possible for these
indexes to be greater than queue size in the
following cases:
1) The queue is created to be migrated into, or
2) The client issues a qstop/qstart after running datapath

Fixes: 4dda72dbdeab3 ("common/sfc_efx/base: add base virtio support for vDPA")
Cc: stable@dpdk.org

Signed-off-by: Abhimanyu Saini <absaini@amd.com>
---
 drivers/common/sfc_efx/base/rhead_virtio.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)
diff mbox series

Patch

diff --git a/drivers/common/sfc_efx/base/rhead_virtio.c b/drivers/common/sfc_efx/base/rhead_virtio.c
index 335cb74..7f08717 100644
--- a/drivers/common/sfc_efx/base/rhead_virtio.c
+++ b/drivers/common/sfc_efx/base/rhead_virtio.c
@@ -47,14 +47,6 @@ 
 		goto fail2;
 	}
 
-	if (evvdp != NULL) {
-		if ((evvdp->evvd_vq_cidx > evvcp->evvc_vq_size) ||
-		    (evvdp->evvd_vq_pidx > evvcp->evvc_vq_size)) {
-			rc = EINVAL;
-			goto fail3;
-		}
-	}
-
 	req.emr_cmd = MC_CMD_VIRTIO_INIT_QUEUE;
 	req.emr_in_buf = payload;
 	req.emr_in_length = MC_CMD_VIRTIO_INIT_QUEUE_REQ_LEN;
@@ -116,15 +108,13 @@ 
 
 	if (req.emr_rc != 0) {
 		rc = req.emr_rc;
-		goto fail4;
+		goto fail3;
 	}
 
 	evvp->evv_vi_index = vi_index;
 
 	return (0);
 
-fail4:
-	EFSYS_PROBE(fail4);
 fail3:
 	EFSYS_PROBE(fail3);
 fail2: