commit 2580b452ffccfb2bcba97dbfcb0d6067d06bc453
author zhenwei pi <pizhenwei@bytedance.com> Wed Mar 01 18:58:45 2023 +0800
committer Michael S. Tsirkin <mst@redhat.com> Tue Mar 07 12:38:59 2023 -0500
tree fce09a3465596c8360ea326e91f3b9a86b0db472
parent e7a775fd9fc08550c4525bc331b1cda342b459dd

cryptodev: support QoS

Add 'throttle-bps' and 'throttle-ops' limitation to set QoS. The
two arguments work with both QEMU command line and QMP command.

Example of QEMU command line:
-object cryptodev-backend-builtin,id=cryptodev1,throttle-bps=1600,\
throttle-ops=100

Example of QMP command:
virsh qemu-monitor-command buster --hmp qom-set /objects/cryptodev1 \
throttle-ops 100

or cancel limitation:
virsh qemu-monitor-command buster --hmp qom-set /objects/cryptodev1 \
throttle-ops 0

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20230301105847.253084-11-pizhenwei@bytedance.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

qapi/qom.json

diff --git a/qapi/qom.json b/qapi/qom.json
index 30e7665..a877b87 100644
--- a/qapi/qom.json
+++ b/qapi/qom.json
@@ -278,10 +278,16 @@
 #          cryptodev-backend and must be 1 for cryptodev-backend-builtin.
 #          (default: 1)
 #
+# @throttle-bps: limit total bytes per second (Since 8.0)
+#
+# @throttle-ops: limit total operations per second (Since 8.0)
+#
 # Since: 2.8
 ##
 { 'struct': 'CryptodevBackendProperties',
-  'data': { '*queues': 'uint32' } }
+  'data': { '*queues': 'uint32',
+            '*throttle-bps': 'uint64',
+            '*throttle-ops': 'uint64' } }
 
 ##
 # @CryptodevVhostUserProperties: