raw/ioat: fix config script queue size calculation

The queue size calculation is currently based on "max_tokens" rather than
"max_work_queues_size". This is resulting in the queue size being
incorrectly configured when using the script to configure devices bound to
the IDXD kernel driver.
This patch fixes this miscalculation so devices are configured with
appropriate queue size.

Fixes: 01863b9d2354 ("raw/ioat: include example configuration script")
Cc: stable@dpdk.org
Reported-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

diff --git a/drivers/raw/ioat/dpdk_idxd_cfg.py b/drivers/raw/ioat/dpdk_idxd_cfg.py
index 83ef481..fcc2782 100755 (executable)
--- a/drivers/raw/ioat/dpdk_idxd_cfg.py
+++ b/drivers/raw/ioat/dpdk_idxd_cfg.py
@@ -63,7 +63,7 @@ def configure_dsa(dsa_id, queues, prefix):
     max_groups = dsa_dir.read_int("max_groups")
     max_engines = dsa_dir.read_int("max_engines")
     max_queues = dsa_dir.read_int("max_work_queues")
-    max_tokens = dsa_dir.read_int("max_tokens")
+    max_work_queues_size = dsa_dir.read_int("max_work_queues_size")
 
     nb_queues = min(queues, max_queues)
     if queues > nb_queues:
@@ -82,7 +82,7 @@ def configure_dsa(dsa_id, queues, prefix):
                              "mode": "dedicated",
                              "name": f"{prefix}_wq{dsa_id}.{q}",
                              "priority": 1,
-                             "size": int(max_tokens / nb_queues)})
+                             "size": int(max_work_queues_size / nb_queues)})
 
     # enable device and then queues
     drv_dir.write_values({"bind": f"dsa{dsa_id}"})