qapi: Add burst length parameters to block_set_io_throttle

This patch adds the new bps_*_max_length and iops_*_max_length
parameters to the block_set_io_throttle command.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 33012b8..126d834 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1298,17 +1298,53 @@
 #
 # @iops_wr: write I/O operations per second
 #
-# @bps_max: #optional total max in bytes (Since 1.7)
+# @bps_max: #optional total throughput limit during bursts,
+#                     in bytes (Since 1.7)
 #
-# @bps_rd_max: #optional read max in bytes (Since 1.7)
+# @bps_rd_max: #optional read throughput limit during bursts,
+#                        in bytes (Since 1.7)
 #
-# @bps_wr_max: #optional write max in bytes (Since 1.7)
+# @bps_wr_max: #optional write throughput limit during bursts,
+#                        in bytes (Since 1.7)
 #
-# @iops_max: #optional total I/O operations max (Since 1.7)
+# @iops_max: #optional total I/O operations per second during bursts,
+#                      in bytes (Since 1.7)
 #
-# @iops_rd_max: #optional read I/O operations max (Since 1.7)
+# @iops_rd_max: #optional read I/O operations per second during bursts,
+#                         in bytes (Since 1.7)
 #
-# @iops_wr_max: #optional write I/O operations max (Since 1.7)
+# @iops_wr_max: #optional write I/O operations per second during bursts,
+#                         in bytes (Since 1.7)
+#
+# @bps_max_length: #optional maximum length of the @bps_max burst
+#                            period, in seconds. It must only
+#                            be set if @bps_max is set as well.
+#                            Defaults to 1. (Since 2.6)
+#
+# @bps_rd_max_length: #optional maximum length of the @bps_rd_max
+#                               burst period, in seconds. It must only
+#                               be set if @bps_rd_max is set as well.
+#                               Defaults to 1. (Since 2.6)
+#
+# @bps_wr_max_length: #optional maximum length of the @bps_wr_max
+#                               burst period, in seconds. It must only
+#                               be set if @bps_wr_max is set as well.
+#                               Defaults to 1. (Since 2.6)
+#
+# @iops_max_length: #optional maximum length of the @iops burst
+#                             period, in seconds. It must only
+#                             be set if @iops_max is set as well.
+#                             Defaults to 1. (Since 2.6)
+#
+# @iops_rd_max_length: #optional maximum length of the @iops_rd_max
+#                                burst period, in seconds. It must only
+#                                be set if @iops_rd_max is set as well.
+#                                Defaults to 1. (Since 2.6)
+#
+# @iops_wr_max_length: #optional maximum length of the @iops_wr_max
+#                                burst period, in seconds. It must only
+#                                be set if @iops_wr_max is set as well.
+#                                Defaults to 1. (Since 2.6)
 #
 # @iops_size: #optional an I/O size in bytes (Since 1.7)
 #
@@ -1325,6 +1361,9 @@
             '*bps_max': 'int', '*bps_rd_max': 'int',
             '*bps_wr_max': 'int', '*iops_max': 'int',
             '*iops_rd_max': 'int', '*iops_wr_max': 'int',
+            '*bps_max_length': 'int', '*bps_rd_max_length': 'int',
+            '*bps_wr_max_length': 'int', '*iops_max_length': 'int',
+            '*iops_rd_max_length': 'int', '*iops_wr_max_length': 'int',
             '*iops_size': 'int', '*group': 'str' } }
 
 ##