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vhost: add IOMMU-related macros for old kernels

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These defines and enums have been introduced in upstream kernel v4.8,
and backported to RHEL 7.4.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Yuanhan Liu <yliu@fridaylinux.org>
This commit is contained in:
Maxime Coquelin 2017-10-05 10:36:13 +02:00 committed by Yuanhan Liu
parent 275c3f9447
commit 06903abc0d
1 changed files with 31 additions and 0 deletions
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31
lib/librte_vhost/vhost.h
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@ -145,6 +145,37 @@ struct vhost_virtqueue {
#define VIRTIO_NET_F_MTU 3
#endif
/* Declare IOMMU related bits for older kernels */
#ifndef VIRTIO_F_IOMMU_PLATFORM
#define VIRTIO_F_IOMMU_PLATFORM 33
struct vhost_iotlb_msg {
__u64 iova;
__u64 size;
__u64 uaddr;
#define VHOST_ACCESS_RO 0x1
#define VHOST_ACCESS_WO 0x2
#define VHOST_ACCESS_RW 0x3
__u8 perm;
#define VHOST_IOTLB_MISS 1
#define VHOST_IOTLB_UPDATE 2
#define VHOST_IOTLB_INVALIDATE 3
#define VHOST_IOTLB_ACCESS_FAIL 4
__u8 type;
};
#define VHOST_IOTLB_MSG 0x1
struct vhost_msg {
int type;
union {
struct vhost_iotlb_msg iotlb;
__u8 padding[64];
};
};
#endif
/*
* Define virtio 1.0 for older kernels
*/