From: Bruce Richardson <bruce.richardson@intel.com>
To: "Burakov, Anatoly" <anatoly.burakov@intel.com>
Cc: dev@dpdk.org, Ferruh Yigit <ferruh.yigit@intel.com>
Subject: Re: [dpdk-dev] [PATCH v2] usertools/dpdk-devbind: add support for PCI wildcards
Date: Mon, 24 Aug 2020 18:05:08 +0100 [thread overview]
Message-ID: <20200824170508.GC547@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <e28b743d-426c-57a8-9fa4-80b91fc24d50@intel.com>
On Fri, Aug 21, 2020 at 10:14:19AM +0100, Burakov, Anatoly wrote:
> On 20-Aug-20 4:43 PM, Bruce Richardson wrote:
> > When binding or unbinding a range of devices, it can be useful to use
> > wildcards to specify the devices rather than repeating the same prefix
> > multiple times. We can use the python "glob" module to give us this
> > functionality - at least for PCI devices - by checking /sys for matching
> > files.
> >
> > Examples of use from my system:
> >
> > ./dpdk-devbind.py -b vfio-pci 80:04.*
> > ./dpdk-devbind.py -u 80:04.[2-7]
> >
> > The first example binds eight devices, 80:04.0..80:04.7, to vfio-pci. The
> > second then unbinds six of those devices, 80:04.2..80:04.7, from any
> > driver.
> >
> > Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> > Tested-by: Ferruh Yigit <ferruh.yigit@intel.com>
> > ---
> > V2: added help text additions
> > ---
> > usertools/dpdk-devbind.py | 16 ++++++++++++++++
> > 1 file changed, 16 insertions(+)
> >
> > diff --git a/usertools/dpdk-devbind.py b/usertools/dpdk-devbind.py
> > index 86b6b53c40..d13defbe1a 100755
> > --- a/usertools/dpdk-devbind.py
> > +++ b/usertools/dpdk-devbind.py
> > @@ -8,6 +8,7 @@
> > import os
> > import getopt
> > import subprocess
> > +from glob import glob
> > from os.path import exists, abspath, dirname, basename
> > if sys.version_info.major < 3:
> > @@ -89,6 +90,8 @@ def usage():
> > where DEVICE1, DEVICE2 etc, are specified via PCI "domain:bus:slot.func" syntax
> > or "bus:slot.func" syntax. For devices bound to Linux kernel drivers, they may
> > also be referred to by Linux interface name e.g. eth0, eth1, em0, em1, etc.
> > +If devices are specified using PCI <domain:>bus:device:func format, then
> > +shell wildcards and ranges may be used, e.g. 80:04.*, 80:04.[0-3]
> > Options:
> > --help, --usage:
> > @@ -145,6 +148,9 @@ def usage():
> > To bind 0000:02:00.0 and 0000:02:00.1 to the ixgbe kernel driver
> > %(argv0)s -b ixgbe 02:00.0 02:00.1
> > +To bind all funcions on device 0000:02:00 to ixgbe kernel driver
> > + %(argv0)s -b ixgbe 02:00.*
> > +
> > """ % locals()) # replace items from local variables
> > @@ -689,6 +695,16 @@ def parse_args():
> > else:
> > b_flag = arg
> > + # resolve any PCI globs in the args
> > + new_args = []
> > + sysfs_path = "/sys/bus/pci/devices/"
> > + for arg in args:
> > + globbed_arg = glob(sysfs_path + arg) + glob(sysfs_path + "0000:" + arg)
>
> os.path.join()?
>
> > + if globbed_arg:
> > + new_args.extend([a[len(sysfs_path):] for a in globbed_arg])
>
> os.path.basename()?
>
These are used in V4.
next prev parent reply other threads:[~2020-08-24 17:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-20 12:23 [dpdk-dev] [PATCH] " Bruce Richardson
2020-08-20 14:44 ` Ferruh Yigit
2020-08-20 15:43 ` [dpdk-dev] [PATCH v2] " Bruce Richardson
2020-08-21 9:14 ` Burakov, Anatoly
2020-08-24 17:05 ` Bruce Richardson [this message]
2020-08-21 9:17 ` Burakov, Anatoly
2020-08-24 16:19 ` Bruce Richardson
2020-08-20 15:43 ` [dpdk-dev] [PATCH] " Bruce Richardson
2020-08-20 15:52 ` [dpdk-dev] [PATCH v3] " Bruce Richardson
2020-08-24 17:04 ` [dpdk-dev] [PATCH v4] " Bruce Richardson
2020-08-28 15:48 ` Ferruh Yigit
2020-09-08 21:44 ` Thomas Monjalon
2020-08-28 16:02 ` Burakov, Anatoly
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