mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-19 14:31:48 +01:00
113 lines
4.0 KiB
Groff
113 lines
4.0 KiB
Groff
.\"
|
|
.\" Copyright (c) 2014 Sandvine Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd May 28, 2015
|
|
.Dt PCI_IOV_ADD_VF 9
|
|
.Os
|
|
.Sh NAME
|
|
.Nm PCI_IOV_ADD_VF
|
|
.Nd inform a PF driver that a VF is being created
|
|
.Sh SYNOPSIS
|
|
.In sys/bus.h
|
|
.In machine/stdarg.h
|
|
.In sys/nv.h
|
|
.In dev/pci/pci_iov.h
|
|
.Ft int
|
|
.Fn PCI_IOV_ADD_VF "device_t dev" "uint16_t vfnum" "const nvlist_t *vf_config"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn PCI_IOV_ADD_VF
|
|
method is called by the PCI Single-Root I/O Virtualization
|
|
.Pq SR-IOV
|
|
infrastructure when it is initializating a new Virtual Function (VF) as a child
|
|
of the given Physical Function (PF) device.
|
|
This method will not be called until a successful call to
|
|
.Xr PCI_IOV_INIT 9
|
|
has been made.
|
|
It is not guaranteed that this method will be called following a successful call
|
|
to
|
|
.Xr PCI_IOV_INIT 9 .
|
|
If the infrastructure encounters a failure to allocate resources following the
|
|
call to
|
|
.Xr PCI_IOV_INIT 9 ,
|
|
the VF creation will be aborted and
|
|
.Xr PCI_IOV_UNINIT 9
|
|
will be called immediately without any preceding calls to
|
|
.Nm .
|
|
.Pp
|
|
The index of the VF being initialized is passed in the
|
|
.Fa vfnum
|
|
argument.
|
|
VFs are always numbered sequentially starting at 0.
|
|
.Pp
|
|
If the driver requested device-specific configuration parameters via a VF schema
|
|
in its call to
|
|
.Xr pci_iov_attach 9 ,
|
|
those parameters will be contained in the
|
|
.Pa vf_config
|
|
argument.
|
|
All configuration parameters that were either set as required parameters or that
|
|
had a default value set in the VF schema are guaranteed to be present in
|
|
.Fa vf_config .
|
|
Configuration parameters that were neither set as required nor were given a
|
|
default value are optional and may or may not be present in
|
|
.Fa vf_config .
|
|
.Fa vf_config
|
|
will not contain any configuration parameters that were not specified in the VF
|
|
schema.
|
|
All configuration parameters will have the correct type and will be in the range
|
|
of valid values specified in the schema.
|
|
.Pp
|
|
Note that it is possible for the user to set different configuration values on
|
|
different VF devices that are children of the same PF.
|
|
The PF driver must not cache configuration parameters passed in previous calls
|
|
to
|
|
.Fn PCI_IOV_ADD_VF
|
|
for other VFs and apply those parameters to the current VF.
|
|
.Pp
|
|
This function will not be called twice for the same
|
|
.Fa vf_num
|
|
on the same PF device without
|
|
.Xr PCI_IOV_UNINIT 9
|
|
and
|
|
.Xr PCI_IOV_INIT 9
|
|
first being called, in that order.
|
|
.Sh RETURN VALUES
|
|
This method returns 0 on success, otherwise an appropriate error is returned.
|
|
If this method returns an error then the current VF device will be destroyed
|
|
but the rest of the VF devices will be created and SR-IOV will be enabled on
|
|
the PF.
|
|
.Sh SEE ALSO
|
|
.Xr nv 9 ,
|
|
.Xr pci 9 ,
|
|
.Xr PCI_IOV_INIT 9 ,
|
|
.Xr pci_iov_schema 9 ,
|
|
.Xr PCI_IOV_UNINIT 9
|
|
.Sh AUTHORS
|
|
This manual page was written by
|
|
.An Ryan Stone Aq Mt rstone@FreeBSD.org .
|