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Diffstat (limited to 'hw/dataplane/vring.h')
-rw-r--r-- | hw/dataplane/vring.h | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/hw/dataplane/vring.h b/hw/dataplane/vring.h deleted file mode 100644 index defb1efcda..0000000000 --- a/hw/dataplane/vring.h +++ /dev/null @@ -1,62 +0,0 @@ -/* Copyright 2012 Red Hat, Inc. and/or its affiliates - * Copyright IBM, Corp. 2012 - * - * Based on Linux 2.6.39 vhost code: - * Copyright (C) 2009 Red Hat, Inc. - * Copyright (C) 2006 Rusty Russell IBM Corporation - * - * Author: Michael S. Tsirkin <mst@redhat.com> - * Stefan Hajnoczi <stefanha@redhat.com> - * - * Inspiration, some code, and most witty comments come from - * Documentation/virtual/lguest/lguest.c, by Rusty Russell - * - * This work is licensed under the terms of the GNU GPL, version 2. - */ - -#ifndef VRING_H -#define VRING_H - -#include <linux/virtio_ring.h> -#include "qemu-common.h" -#include "hostmem.h" -#include "hw/virtio.h" - -typedef struct { - HostMem hostmem; /* guest memory mapper */ - struct vring vr; /* virtqueue vring mapped to host memory */ - uint16_t last_avail_idx; /* last processed avail ring index */ - uint16_t last_used_idx; /* last processed used ring index */ - uint16_t signalled_used; /* EVENT_IDX state */ - bool signalled_used_valid; - bool broken; /* was there a fatal error? */ -} Vring; - -static inline unsigned int vring_get_num(Vring *vring) -{ - return vring->vr.num; -} - -/* Are there more descriptors available? */ -static inline bool vring_more_avail(Vring *vring) -{ - return vring->vr.avail->idx != vring->last_avail_idx; -} - -/* Fail future vring_pop() and vring_push() calls until reset */ -static inline void vring_set_broken(Vring *vring) -{ - vring->broken = true; -} - -bool vring_setup(Vring *vring, VirtIODevice *vdev, int n); -void vring_teardown(Vring *vring); -void vring_disable_notification(VirtIODevice *vdev, Vring *vring); -bool vring_enable_notification(VirtIODevice *vdev, Vring *vring); -bool vring_should_notify(VirtIODevice *vdev, Vring *vring); -int vring_pop(VirtIODevice *vdev, Vring *vring, - struct iovec iov[], struct iovec *iov_end, - unsigned int *out_num, unsigned int *in_num); -void vring_push(Vring *vring, unsigned int head, int len); - -#endif /* VRING_H */ |