/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
+ * Copyright(c) 2010-2018 Intel Corporation
*/
#ifndef _VHOST_NET_CDEV_H_
#define _VHOST_NET_CDEV_H_
#include <stdint.h>
#include <stdio.h>
+#include <stdbool.h>
#include <sys/types.h>
#include <sys/queue.h>
#include <unistd.h>
#include <rte_rwlock.h>
#include "rte_vhost.h"
+#include "rte_vdpa.h"
/* Used to indicate that the device is running on a data core */
#define VIRTIO_DEV_RUNNING 1
#define VIRTIO_DEV_READY 2
/* Used to indicate that the built-in vhost net device backend is enabled */
#define VIRTIO_DEV_BUILTIN_VIRTIO_NET 4
+/* Used to indicate that the device has its own data path and configured */
+#define VIRTIO_DEV_VDPA_CONFIGURED 8
/* Backend value set by guest. */
#define VIRTIO_DEV_STOPPED -1
#define VIRTIO_F_VERSION_1 32
#endif
-#define VHOST_USER_F_PROTOCOL_FEATURES 30
-
/* Features supported by this builtin vhost-user net driver. */
#define VIRTIO_NET_SUPPORTED_FEATURES ((1ULL << VIRTIO_NET_F_MRG_RXBUF) | \
(1ULL << VIRTIO_F_ANY_LAYOUT) | \
uint64_t size;
};
+/**
+ * function prototype for the vhost backend to handler specific vhost user
+ * messages prior to the master message handling
+ *
+ * @param vid
+ * vhost device id
+ * @param msg
+ * Message pointer.
+ * @param require_reply
+ * If the handler requires sending a reply, this varaible shall be written 1,
+ * otherwise 0.
+ * @param skip_master
+ * If the handler requires skipping the master message handling, this variable
+ * shall be written 1, otherwise 0.
+ * @return
+ * 0 on success, -1 on failure
+ */
+typedef int (*vhost_msg_pre_handle)(int vid, void *msg,
+ uint32_t *require_reply, uint32_t *skip_master);
+
+/**
+ * function prototype for the vhost backend to handler specific vhost user
+ * messages after the master message handling is done
+ *
+ * @param vid
+ * vhost device id
+ * @param msg
+ * Message pointer.
+ * @param require_reply
+ * If the handler requires sending a reply, this varaible shall be written 1,
+ * otherwise 0.
+ * @return
+ * 0 on success, -1 on failure
+ */
+typedef int (*vhost_msg_post_handle)(int vid, void *msg,
+ uint32_t *require_reply);
+
+/**
+ * pre and post vhost user message handlers
+ */
+struct vhost_user_extern_ops {
+ vhost_msg_pre_handle pre_msg_handle;
+ vhost_msg_post_handle post_msg_handle;
+};
+
/**
* Device structure contains all configuration information relating
* to the device.
struct guest_page *guest_pages;
int slave_req_fd;
-} __rte_cache_aligned;
+ /*
+ * Device id to identify a specific backend device.
+ * It's set to -1 for the default software implementation.
+ */
+ int vdpa_dev_id;
+
+ /* private data for virtio device */
+ void *extern_data;
+ /* pre and post vhost user message handlers for the device */
+ struct vhost_user_extern_ops extern_ops;
+} __rte_cache_aligned;
#define VHOST_LOG_PAGE 4096
int alloc_vring_queue(struct virtio_net *dev, uint32_t vring_idx);
+void vhost_attach_vdpa_device(int vid, int did);
+void vhost_detach_vdpa_device(int vid);
+
void vhost_set_ifname(int, const char *if_name, unsigned int if_len);
void vhost_enable_dequeue_zero_copy(int vid);
void vhost_set_builtin_virtio_net(int vid, bool enable);
void vhost_backend_cleanup(struct virtio_net *dev);
uint64_t __vhost_iova_to_vva(struct virtio_net *dev, struct vhost_virtqueue *vq,
- uint64_t iova, uint64_t size, uint8_t perm);
+ uint64_t iova, uint64_t *len, uint8_t perm);
int vring_translate(struct virtio_net *dev, struct vhost_virtqueue *vq);
void vring_invalidate(struct virtio_net *dev, struct vhost_virtqueue *vq);
static __rte_always_inline uint64_t
vhost_iova_to_vva(struct virtio_net *dev, struct vhost_virtqueue *vq,
- uint64_t iova, uint64_t size, uint8_t perm)
+ uint64_t iova, uint64_t *len, uint8_t perm)
{
if (!(dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)))
return rte_vhost_gpa_to_vva(dev->mem, iova);
- return __vhost_iova_to_vva(dev, vq, iova, size, perm);
+ return __vhost_iova_to_vva(dev, vq, iova, len, perm);
}
#define vhost_used_event(vr) \