[PATCH 1/4] Add public API for parallel compression method

[Jiang Jiacheng]

Add description for VIR_MIGRATE_PARAM_COMPRESSION, it will
be reused in choosing compression method during multifd migration.
Add public API VIR_MIGRATE_PARAM_COMPRESSION_ZLIB_LEVEL,
VIR_MIGRATE_PARAM_COMPRESSION_ZSTD_LEVEL for migration APIs
to support set compress level during multifd migration.

Signed-off-by: Jiang Jiacheng <jiangjiacheng at huawei.com>
---
 include/libvirt/libvirt-domain.h | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
index 5152ed4551..deac3687ed 100644
--- a/include/libvirt/libvirt-domain.h
+++ b/include/libvirt/libvirt-domain.h
@@ -1271,7 +1271,9 @@ typedef enum {
  * virDomainMigrate* params multiple field: name of the method used to
  * compress migration traffic. Supported compression methods: xbzrle, mt.
  * The parameter may be specified multiple times if more than one method
- * should be used.
+ * should be used. Support compression methods for multifd migration: zlib,
+ * zstd. When using with multifd migration, only one supported compression
+ * method can be specified.
  *
  * Since: 1.3.4
  */
@@ -1351,6 +1353,26 @@ typedef enum {
  */
 # define VIR_MIGRATE_PARAM_PARALLEL_CONNECTIONS     "parallel.connections"
 
+/**
+ * VIR_MIGRATE_PARAM_COMPRESSION_ZLIB_LEVEL:
+ *
+ * virDomainMigrate* params field: zlib compress level used during parallel
+ * migration. As VIR_TYPED_PARAM_INT.
+ *
+ * Since: 9.1.0
+ */
+# define VIR_MIGRATE_PARAM_COMPRESSION_ZLIB_LEVEL      "compression.zlib.level"
+
+/**
+ * VIR_MIGRATE_PARAM_COMPRESSION_ZSTD_LEVEL:
+ *
+ * virDomainMigrate* params field: zstd compress level used during parallel
+ * migration. As VIR_TYPED_PARAM_INT.
+ *
+ * Since: 9.1.0
+ */
+# define VIR_MIGRATE_PARAM_COMPRESSION_ZSTD_LEVEL      "compression.zstd.level"
+
 /**
  * VIR_MIGRATE_PARAM_TLS_DESTINATION:
  *
-- 
2.33.0