Imported Upstream version 17.05

Change-Id: Id1e419c5a214e4a18739663b91f0f9a549f1fdc6
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

1 files changed, 14 insertions, 37 deletions

diff --git a/drivers/net/virtio/virtio_user/vhost.h b/drivers/net/virtio/virtio_user/vhost.h
index 7adb55f5..5c983bd4 100644
--- a/drivers/net/virtio/virtio_user/vhost.h
+++ b/drivers/net/virtio/virtio_user/vhost.h
@@ -42,8 +42,6 @@
 #include "../virtio_logs.h"
 #include "../virtqueue.h"
 
-#define VHOST_MEMORY_MAX_NREGIONS 8
-
 struct vhost_vring_state {
 	unsigned int index;
 	unsigned int num;
@@ -98,6 +96,8 @@ enum vhost_user_request {
 	VHOST_USER_MAX
 };
 
+const char * const vhost_msg_strings[VHOST_USER_MAX];
+
 struct vhost_memory_region {
 	uint64_t guest_phys_addr;
 	uint64_t memory_size; /* bytes */
@@ -105,42 +105,19 @@ struct vhost_memory_region {
 	uint64_t mmap_offset;
 };
 
-struct vhost_memory {
-	uint32_t nregions;
-	uint32_t padding;
-	struct vhost_memory_region regions[VHOST_MEMORY_MAX_NREGIONS];
-};
-
-struct vhost_user_msg {
-	enum vhost_user_request request;
+struct virtio_user_dev;
 
-#define VHOST_USER_VERSION_MASK     0x3
-#define VHOST_USER_REPLY_MASK       (0x1 << 2)
-	uint32_t flags;
-	uint32_t size; /* the following payload size */
-	union {
-#define VHOST_USER_VRING_IDX_MASK   0xff
-#define VHOST_USER_VRING_NOFD_MASK  (0x1 << 8)
-		uint64_t u64;
-		struct vhost_vring_state state;
-		struct vhost_vring_addr addr;
-		struct vhost_memory memory;
-	} payload;
-	int fds[VHOST_MEMORY_MAX_NREGIONS];
-} __attribute((packed));
-
-#define VHOST_USER_HDR_SIZE offsetof(struct vhost_user_msg, payload.u64)
-#define VHOST_USER_PAYLOAD_SIZE \
-	(sizeof(struct vhost_user_msg) - VHOST_USER_HDR_SIZE)
-
-/* The version of the protocol we support */
-#define VHOST_USER_VERSION    0x1
-
-#define VHOST_USER_F_PROTOCOL_FEATURES 30
-#define VHOST_USER_MQ (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)
+struct virtio_user_backend_ops {
+	int (*setup)(struct virtio_user_dev *dev);
+	int (*send_request)(struct virtio_user_dev *dev,
+			    enum vhost_user_request req,
+			    void *arg);
+	int (*enable_qp)(struct virtio_user_dev *dev,
+			 uint16_t pair_idx,
+			 int enable);
+};
 
-int vhost_user_sock(int vhostfd, enum vhost_user_request req, void *arg);
-int vhost_user_setup(const char *path);
-int vhost_user_enable_queue_pair(int vhostfd, uint16_t pair_idx, int enable);
+struct virtio_user_backend_ops ops_user;
+struct virtio_user_backend_ops ops_kernel;
 
 #endif