diff options
| author | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 14:02:27 -0400 |
|---|---|---|
| committer | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 14:02:27 -0400 |
| commit | 6d8bdc65446a704d0750217efd05532fc641ea7d (patch) | |
| tree | 8ae6d698b3c9801750a8b117b3842fb369872a3a /static/openbsd/man4/vio.4 | |
| parent | 2f467bd7ff8f8db0dafa40426166491d7f57f368 (diff) | |
docs: OpenBSD Man Pages Added
Diffstat (limited to 'static/openbsd/man4/vio.4')
| -rw-r--r-- | static/openbsd/man4/vio.4 | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/static/openbsd/man4/vio.4 b/static/openbsd/man4/vio.4 new file mode 100644 index 00000000..e3c71394 --- /dev/null +++ b/static/openbsd/man4/vio.4 @@ -0,0 +1,62 @@ +.\" $OpenBSD: vio.4,v 1.16 2021/05/24 17:29:56 dv Exp $ +.\" +.\" Copyright (c) 2012 Stefan Fritsch <sf@sfritsch.de> +.\" +.\" Permission to use, copy, modify, and distribute this software for any +.\" purpose with or without fee is hereby granted, provided that the above +.\" copyright notice and this permission notice appear in all copies. +.\" +.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +.\" +.Dd $Mdocdate: May 24 2021 $ +.Dt VIO 4 +.Os +.Sh NAME +.Nm vio +.Nd VirtIO network device +.Sh SYNOPSIS +.Cd "vio* at virtio? flags 0x00" +.Sh DESCRIPTION +The +.Nm +driver provides support for the +.Xr virtio 4 +network interface provided by bhyve, KVM, QEMU, VirtualBox, and +.Xr vmd 8 . +.Pp +Setting the bit 0x2 in the flags disables the RingEventIndex feature. +This can be tried as a workaround for possible bugs in host implementations of +.Nm +at the cost of slightly reduced performance. +.Pp +Setting the bit 0x100 in the flags forces the interface to be always in +promiscuous mode. +This can be used as a workaround for a bug in QEMU before version 1.7.2 that +prevents packets with a VLAN tag from being sent to the guest. +.Sh SEE ALSO +.Xr intro 4 , +.Xr virtio 4 +.Sh HISTORY +The +.Nm +driver first appeared in +.Ox 5.3 . +.Sh AUTHORS +.An -nosplit +The +.Nm +driver was ported to +.Ox +and improved by +.An Stefan Fritsch Aq Mt sf@sfritsch.de . +It is based on the +.Nx +.Nm vioif +driver by +.An Minoura Makoto . |