-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
*/
#ifndef _VHOST_NET_CDEV_H_
#include <rte_log.h>
#include <rte_ether.h>
+#include <rte_rwlock.h>
#include "rte_vhost.h"
uint16_t last_avail_idx;
uint16_t last_used_idx;
+ /* Last used index we notify to front end. */
+ uint16_t signalled_used;
#define VIRTIO_INVALID_EVENTFD (-1)
#define VIRTIO_UNINITIALIZED_EVENTFD (-2)
/* Backend value to determine if device should started/stopped */
int backend;
+ int enabled;
+ int access_ok;
+ rte_spinlock_t access_lock;
+
/* Used to notify the guest (trigger interrupt) */
int callfd;
/* Currently unused as polling mode is enabled */
int kickfd;
- int enabled;
/* Physical address of used ring, for logging */
uint64_t log_guest_addr;
struct vring_used_elem *shadow_used_ring;
uint16_t shadow_used_idx;
+ struct vhost_vring_addr ring_addrs;
struct batch_copy_elem *batch_copy_elems;
uint16_t batch_copy_nb_elems;
+
+ rte_rwlock_t iotlb_lock;
+ rte_rwlock_t iotlb_pending_lock;
+ struct rte_mempool *iotlb_pool;
+ TAILQ_HEAD(, vhost_iotlb_entry) iotlb_list;
+ int iotlb_cache_nr;
+ TAILQ_HEAD(, vhost_iotlb_entry) iotlb_pending_list;
} __rte_cache_aligned;
/* Old kernels have no such macros defined */
#define VIRTIO_NET_F_MTU 3
#endif
+#ifndef VIRTIO_F_ANY_LAYOUT
+ #define VIRTIO_F_ANY_LAYOUT 27
+#endif
+
/* Declare IOMMU related bits for older kernels */
#ifndef VIRTIO_F_IOMMU_PLATFORM
/* 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) | \
(1ULL << VIRTIO_NET_F_CTRL_VQ) | \
(1ULL << VIRTIO_NET_F_CTRL_RX) | \
(1ULL << VIRTIO_NET_F_GUEST_ANNOUNCE) | \
(1ULL << VIRTIO_F_VERSION_1) | \
(1ULL << VHOST_F_LOG_ALL) | \
(1ULL << VHOST_USER_F_PROTOCOL_FEATURES) | \
+ (1ULL << VIRTIO_NET_F_GSO) | \
(1ULL << VIRTIO_NET_F_HOST_TSO4) | \
(1ULL << VIRTIO_NET_F_HOST_TSO6) | \
+ (1ULL << VIRTIO_NET_F_HOST_UFO) | \
+ (1ULL << VIRTIO_NET_F_HOST_ECN) | \
(1ULL << VIRTIO_NET_F_CSUM) | \
(1ULL << VIRTIO_NET_F_GUEST_CSUM) | \
(1ULL << VIRTIO_NET_F_GUEST_TSO4) | \
(1ULL << VIRTIO_NET_F_GUEST_TSO6) | \
+ (1ULL << VIRTIO_NET_F_GUEST_UFO) | \
+ (1ULL << VIRTIO_NET_F_GUEST_ECN) | \
(1ULL << VIRTIO_RING_F_INDIRECT_DESC) | \
- (1ULL << VIRTIO_NET_F_MTU))
+ (1ULL << VIRTIO_RING_F_EVENT_IDX) | \
+ (1ULL << VIRTIO_NET_F_MTU) | \
+ (1ULL << VIRTIO_F_IOMMU_PLATFORM))
struct guest_page {
extern struct virtio_net *vhost_devices[MAX_VHOST_DEVICE];
/* Convert guest physical address to host physical address */
-static __rte_always_inline phys_addr_t
+static __rte_always_inline rte_iova_t
gpa_to_hpa(struct virtio_net *dev, uint64_t gpa, uint64_t size)
{
uint32_t i;
void reset_device(struct virtio_net *dev);
void vhost_destroy_device(int);
+void cleanup_vq(struct vhost_virtqueue *vq, int destroy);
+void free_vq(struct vhost_virtqueue *vq);
+
int alloc_vring_queue(struct virtio_net *dev, uint32_t vring_idx);
void vhost_set_ifname(int, const char *if_name, unsigned int if_len);
*/
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);
+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)
+{
+ 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);
+}
+
+#define vhost_used_event(vr) \
+ (*(volatile uint16_t*)&(vr)->avail->ring[(vr)->size])
+
+/*
+ * The following is used with VIRTIO_RING_F_EVENT_IDX.
+ * Assuming a given event_idx value from the other size, if we have
+ * just incremented index from old to new_idx, should we trigger an
+ * event?
+ */
+static __rte_always_inline int
+vhost_need_event(uint16_t event_idx, uint16_t new_idx, uint16_t old)
+{
+ return (uint16_t)(new_idx - event_idx - 1) < (uint16_t)(new_idx - old);
+}
+
+static __rte_always_inline void
+vhost_vring_call(struct virtio_net *dev, struct vhost_virtqueue *vq)
+{
+ /* Flush used->idx update before we read avail->flags. */
+ rte_mb();
+
+ /* Don't kick guest if we don't reach index specified by guest. */
+ if (dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX)) {
+ uint16_t old = vq->signalled_used;
+ uint16_t new = vq->last_used_idx;
+
+ LOG_DEBUG(VHOST_DATA, "%s: used_event_idx=%d, old=%d, new=%d\n",
+ __func__,
+ vhost_used_event(vq),
+ old, new);
+ if (vhost_need_event(vhost_used_event(vq), new, old)
+ && (vq->callfd >= 0)) {
+ vq->signalled_used = vq->last_used_idx;
+ eventfd_write(vq->callfd, (eventfd_t) 1);
+ }
+ } else {
+ /* Kick the guest if necessary. */
+ if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT)
+ && (vq->callfd >= 0))
+ eventfd_write(vq->callfd, (eventfd_t)1);
+ }
+}
+
#endif /* _VHOST_NET_CDEV_H_ */