diff options
Diffstat (limited to 'usr.sbin/vmd/virtio.h')
| -rw-r--r-- | usr.sbin/vmd/virtio.h | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/usr.sbin/vmd/virtio.h b/usr.sbin/vmd/virtio.h index 55640d6ab59..73be1d852bb 100644 --- a/usr.sbin/vmd/virtio.h +++ b/usr.sbin/vmd/virtio.h @@ -1,4 +1,4 @@ -/* $OpenBSD: virtio.h,v 1.22 2018/01/03 05:39:56 ccardenas Exp $ */ +/* $OpenBSD: virtio.h,v 1.23 2018/01/15 04:26:58 ccardenas Exp $ */ /* * Copyright (c) 2015 Mike Larkin <mlarkin@openbsd.org> @@ -99,6 +99,40 @@ struct virtio_vq_info { uint16_t notified_avail; }; +/* + * Each virtio driver has a notifyq method where one or more messages + * are ready to be processed on a given virtq. As such, various + * pieces of information are needed to provide ring accounting while + * processing a given message such as virtq indexes, vring pointers, and + * vring descriptors. + */ +struct virtio_vq_acct { + + /* index of previous avail vring message */ + uint16_t idx; + + /* index of current message containing the request */ + uint16_t req_idx; + + /* index of current message containing the response */ + uint16_t resp_idx; + + /* vring descriptor pointer */ + struct vring_desc *desc; + + /* vring descriptor pointer for request header and data */ + struct vring_desc *req_desc; + + /* vring descriptor pointer for response header and data */ + struct vring_desc *resp_desc; + + /* pointer to the available vring */ + struct vring_avail *avail; + + /* pointer to the used vring */ + struct vring_used *used; +}; + struct viornd_dev { struct virtio_io_cfg cfg; |