[PATCH v2 3/6] vhost: hdr file changes for add/remove mem regions

[Pravin M Bathija]

* add enums to vhost user request for add/remove
  memory region support
* data structure that defines single memory region
* increase max memory regions from 8 to 128
* 128 add/remove regions tested with qemu virtio with
  testpmd vhost.

Signed-off-By: Pravin M Bathija <pravin.bathija at dell.com>
---
 lib/vhost/vhost_user.h | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/lib/vhost/vhost_user.h b/lib/vhost/vhost_user.h
index ef486545ba..c6ad5b76d6 100644
--- a/lib/vhost/vhost_user.h
+++ b/lib/vhost/vhost_user.h
@@ -11,7 +11,7 @@
 
 /* refer to hw/virtio/vhost-user.c */
 
-#define VHOST_MEMORY_MAX_NREGIONS 8
+#define VHOST_MEMORY_MAX_NREGIONS 128
 
 #define VHOST_USER_NET_SUPPORTED_FEATURES \
 	(VIRTIO_NET_SUPPORTED_FEATURES | \
@@ -32,6 +32,7 @@
 					 (1ULL << VHOST_USER_PROTOCOL_F_BACKEND_SEND_FD) | \
 					 (1ULL << VHOST_USER_PROTOCOL_F_HOST_NOTIFIER) | \
 					 (1ULL << VHOST_USER_PROTOCOL_F_PAGEFAULT) | \
+					 (1ULL << VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS) | \
 					 (1ULL << VHOST_USER_PROTOCOL_F_STATUS))
 
 typedef enum VhostUserRequest {
@@ -67,6 +68,9 @@ typedef enum VhostUserRequest {
 	VHOST_USER_POSTCOPY_END = 30,
 	VHOST_USER_GET_INFLIGHT_FD = 31,
 	VHOST_USER_SET_INFLIGHT_FD = 32,
+	VHOST_USER_GET_MAX_MEM_SLOTS = 36,
+	VHOST_USER_ADD_MEM_REG = 37,
+	VHOST_USER_REM_MEM_REG = 38,
 	VHOST_USER_SET_STATUS = 39,
 	VHOST_USER_GET_STATUS = 40,
 } VhostUserRequest;
@@ -91,6 +95,11 @@ typedef struct VhostUserMemory {
 	VhostUserMemoryRegion regions[VHOST_MEMORY_MAX_NREGIONS];
 } VhostUserMemory;
 
+typedef struct VhostUserSingleMemReg {
+	uint64_t padding;
+	VhostUserMemoryRegion region;
+} VhostUserSingleMemReg;
+
 typedef struct VhostUserLog {
 	uint64_t mmap_size;
 	uint64_t mmap_offset;
@@ -186,6 +195,7 @@ typedef struct __rte_packed_begin VhostUserMsg {
 		struct vhost_vring_state state;
 		struct vhost_vring_addr addr;
 		VhostUserMemory memory;
+		VhostUserSingleMemReg memory_single;
 		VhostUserLog    log;
 		struct vhost_iotlb_msg iotlb;
 		VhostUserCryptoSessionParam crypto_session;
-- 
2.43.0