MFC r282212:

Microsoft vmbus, storage and other related driver enhancements for HyperV.
    - Vmbus multi channel support.
    - Vector interrupt support.
    - Signal optimization.
    - Storvsc driver performance improvement.
    - Scatter and gather support for storvsc driver.
    - Minor bug fix for KVP driver.
Thanks royger, jhb and delphij from FreeBSD community for the reviews
and comments. Also thanks Hovy Xu from NetApp for the contributions to
the storvsc driver.

PR:     195238
Submitted by:   whu
Reviewed by:    royger
Approved by:    royger
Relnotes:       yes
Sponsored by:   Microsoft OSTC
Differential Revision:  https://reviews.freebsd.org/D2575

1 files changed, 13 insertions, 3 deletions

diff --git a/sys/dev/hyperv/storvsc/hv_vstorage.h b/sys/dev/hyperv/storvsc/hv_vstorage.h
index 2632676..deb9183 100644
--- a/sys/dev/hyperv/storvsc/hv_vstorage.h
+++ b/sys/dev/hyperv/storvsc/hv_vstorage.h
@@ -53,7 +53,7 @@
  * V1 RC > 2008/1/31          2.0
  */
 
-#define VMSTOR_PROTOCOL_VERSION_CURRENT	VMSTOR_PROTOCOL_VERSION(2, 0)
+#define VMSTOR_PROTOCOL_VERSION_CURRENT	VMSTOR_PROTOCOL_VERSION(5, 1)
 
 /**
  *  Packet structure ops describing virtual storage requests.
@@ -69,7 +69,10 @@ enum vstor_packet_ops {
 	VSTOR_OPERATION_ENDINITIALIZATION     = 8,
 	VSTOR_OPERATION_QUERYPROTOCOLVERSION  = 9,
 	VSTOR_OPERATION_QUERYPROPERTIES       = 10,
-	VSTOR_OPERATION_MAXIMUM               = 10
+	VSTOR_OPERATION_ENUMERATE_BUS         = 11,
+	VSTOR_OPERATION_FCHBA_DATA            = 12,
+	VSTOR_OPERATION_CREATE_MULTI_CHANNELS = 13,
+	VSTOR_OPERATION_MAXIMUM               = 13
 };
 
 
@@ -123,10 +126,12 @@ struct vmstor_chan_props {
 	uint8_t  path_id;
 	uint8_t  target_id;
 
+	uint16_t max_channel_cnt;
+
 	/**
 	 * Note: port number is only really known on the client side
 	 */
-	uint32_t port;
+	uint16_t port;
 	uint32_t flags;
 	uint32_t max_transfer_bytes;
 
@@ -193,6 +198,11 @@ struct vstor_packet {
 	     * Used during version negotiations.
 	     */
 	    struct vmstor_proto_ver version;
+
+	    /**
+             * Number of multichannels to create
+	     */
+	    uint16_t multi_channels_cnt;
 	} u;
 
 } __packed;