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>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/sysemu/cryptodev.h b/include/sysemu/cryptodev.h
index c0250c4a2c..bc021ce847 100644
--- a/include/sysemu/cryptodev.h
+++ b/include/sysemu/cryptodev.h
@@ -24,6 +24,7 @@
 #define CRYPTODEV_H
 
 #include "qemu/queue.h"
+#include "qemu/throttle.h"
 #include "qom/object.h"
 #include "qapi/qapi-types-cryptodev.h"
 
@@ -187,6 +188,7 @@ typedef struct CryptoDevBackendOpInfo {
         CryptoDevBackendSymOpInfo *sym_op_info;
         CryptoDevBackendAsymOpInfo *asym_op_info;
     } u;
+    QTAILQ_ENTRY(CryptoDevBackendOpInfo) next;
 } CryptoDevBackendOpInfo;
 
 struct CryptoDevBackendClass {
@@ -273,6 +275,11 @@ struct CryptoDevBackend {
     CryptoDevBackendConf conf;
     CryptodevBackendSymStat *sym_stat;
     CryptodevBackendAsymStat *asym_stat;
+
+    ThrottleState ts;
+    ThrottleTimers tt;
+    ThrottleConfig tc;
+    QTAILQ_HEAD(, CryptoDevBackendOpInfo) opinfos;
 };
 
 #define CryptodevSymStatInc(be, op, bytes) do { \