From d24bbd592f9734de9d3b3b1041f2d5e478b1b33c Mon Sep 17 00:00:00 2001
From: Ben Walker <benjamin.walker@intel.com>
Date: Thu, 3 Feb 2022 14:06:47 -0700
Subject: [PATCH] idxd: Calculate number of descriptors per channel based on
 total wq size

Assume any given WQ we are allocated can submit the full device allowed
queue depth.

Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Change-Id: I044e1f70031ea83ae722ed285b84c06b3e5efb27
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11486
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
---
 lib/idxd/idxd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/idxd/idxd.c b/lib/idxd/idxd.c
index a5e6a158c..ff518efcb 100644
--- a/lib/idxd/idxd.c
+++ b/lib/idxd/idxd.c
@@ -124,7 +124,7 @@ spdk_idxd_get_channel(struct spdk_idxd_device *idxd)
 	pthread_mutex_unlock(&idxd->num_channels_lock);
 
 	/* Allocate descriptors and completions */
-	num_descriptors = idxd->queues[0].wqcfg.wq_size / idxd->chan_per_device;
+	num_descriptors = idxd->total_wq_size / idxd->chan_per_device;
 	chan->desc_base = desc = spdk_zmalloc(num_descriptors * sizeof(struct idxd_hw_desc),
 					      0x40, NULL,
 					      SPDK_ENV_LCORE_ID_ANY, SPDK_MALLOC_DMA);