82b9c15403
In case vhost_user_iotlb_miss returns an error, the pending IOTLB
entry has to be removed from the list as no IOTLB update will be
received.
Fixes: fed67a20ac ("vhost: introduce guest IOVA to backend VA helper")
Cc: stable@dpdk.org
Suggested-by: Tiwei Bie <tiwei.bie@intel.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
80 lines
2.9 KiB
C
80 lines
2.9 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) 2017 Red Hat, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _VHOST_IOTLB_H_
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#define _VHOST_IOTLB_H_
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#include <stdbool.h>
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#include "vhost.h"
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static __rte_always_inline void
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vhost_user_iotlb_rd_lock(struct vhost_virtqueue *vq)
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{
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rte_rwlock_read_lock(&vq->iotlb_lock);
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}
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static __rte_always_inline void
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vhost_user_iotlb_rd_unlock(struct vhost_virtqueue *vq)
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{
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rte_rwlock_read_unlock(&vq->iotlb_lock);
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}
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static __rte_always_inline void
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vhost_user_iotlb_wr_lock(struct vhost_virtqueue *vq)
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{
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rte_rwlock_write_lock(&vq->iotlb_lock);
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}
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static __rte_always_inline void
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vhost_user_iotlb_wr_unlock(struct vhost_virtqueue *vq)
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{
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rte_rwlock_write_unlock(&vq->iotlb_lock);
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}
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void vhost_user_iotlb_cache_insert(struct vhost_virtqueue *vq, uint64_t iova,
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uint64_t uaddr, uint64_t size,
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uint8_t perm);
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void vhost_user_iotlb_cache_remove(struct vhost_virtqueue *vq,
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uint64_t iova, uint64_t size);
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uint64_t vhost_user_iotlb_cache_find(struct vhost_virtqueue *vq, uint64_t iova,
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uint64_t *size, uint8_t perm);
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bool vhost_user_iotlb_pending_miss(struct vhost_virtqueue *vq, uint64_t iova,
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uint8_t perm);
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void vhost_user_iotlb_pending_insert(struct vhost_virtqueue *vq, uint64_t iova,
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uint8_t perm);
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void vhost_user_iotlb_pending_remove(struct vhost_virtqueue *vq, uint64_t iova,
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uint64_t size, uint8_t perm);
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int vhost_user_iotlb_init(struct virtio_net *dev, int vq_index);
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#endif /* _VHOST_IOTLB_H_ */
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