On 24 Nov 2021, at 17:14, Eelco Chaudron wrote:
> On 23 Nov 2021, at 15:15, David Marchand wrote: > >> The DPDK unit test only runs if vfio or igb_uio kernel module is loaded: >> on systems with only mlx5, this test is always skipped. >> >> Besides, the test tries to grab the first device listed by dpdk-devbind.py, >> regardless of the PCI device status regarding kmod binding. >> >> Remove dependency on this DPDK script and use a minimal script that >> reads PCI sysfs. >> >> This script is not perfect, as one can imagine PCI devices bound to >> vfio-pci for virtual machines. >> Add a new environment variable DPDK_PCI_ADDR for testers to select the >> PCI device of their liking. >> For consistency and grep, the temporary file PCI_ADDR is renamed >> to DPDK_PCI_ADDR. >> >> Note: with mlx5 devices, there is now more OVS/DPDK warnings to waive. > > Uncovered some build issues with my scripts as now my MLX5 card in the system > is used :) > > Changes look good to me, one small nit. > > Acked-by: Eelco Chaudron <[email protected]> > >> Signed-off-by: David Marchand <[email protected]> >> --- >> Documentation/topics/testing.rst | 1 - >> tests/automake.mk | 1 + >> tests/system-dpdk-find-device.py | 44 ++++++++++++++++++++++++++++++++ >> tests/system-dpdk-macros.at | 10 ++------ >> tests/system-dpdk.at | 4 ++- >> 5 files changed, 50 insertions(+), 10 deletions(-) >> create mode 100755 tests/system-dpdk-find-device.py >> >> diff --git a/Documentation/topics/testing.rst >> b/Documentation/topics/testing.rst >> index 0ddcbd58ab..00f734a77a 100644 >> --- a/Documentation/topics/testing.rst >> +++ b/Documentation/topics/testing.rst >> @@ -343,7 +343,6 @@ To see a list of all the available tests, run:: >> >> These tests support a `DPDK supported NIC`_. The tests operate on a wider >> set of >> environments, for instance, when a virtual port is used. >> -They do require proper DPDK variables (``DPDK_DIR`` and ``DPDK_BUILD``). >> Moreover you need to have root privileges to load the required modules and >> to bind >> the NIC to the DPDK-compatible driver. >> >> diff --git a/tests/automake.mk b/tests/automake.mk >> index c519a5cb36..ead92ace0f 100644 >> --- a/tests/automake.mk >> +++ b/tests/automake.mk >> @@ -188,6 +188,7 @@ SYSTEM_OFFLOADS_TESTSUITE_AT = \ >> >> SYSTEM_DPDK_TESTSUITE_AT = \ >> tests/system-common-macros.at \ >> + tests/system-dpdk-find-device.py \ >> tests/system-dpdk-macros.at \ >> tests/system-dpdk-testsuite.at \ >> tests/system-dpdk.at >> diff --git a/tests/system-dpdk-find-device.py >> b/tests/system-dpdk-find-device.py >> new file mode 100755 >> index 0000000000..4253326e75 >> --- /dev/null >> +++ b/tests/system-dpdk-find-device.py >> @@ -0,0 +1,44 @@ >> +#!/usr/bin/env python3 Forgot to complain about the this, i.e. “#!/usr/bin/env python3” ;) >> +# Copyright (c) 2021 Red Hat, Inc. >> +# >> +# Licensed under the Apache License, Version 2.0 (the "License"); >> +# you may not use this file except in compliance with the License. >> +# You may obtain a copy of the License at: >> +# >> +# http://www.apache.org/licenses/LICENSE-2.0 >> +# >> +# Unless required by applicable law or agreed to in writing, software >> +# distributed under the License is distributed on an "AS IS" BASIS, >> +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. >> +# See the License for the specific language governing permissions and >> +# limitations under the License. >> + >> + >> +from pathlib import Path >> +import os >> +import sys >> + >> +# The tester might want to select a PCI device, if so, trust it. >> +if 'DPDK_PCI_ADDR' in os.environ: >> + print(os.environ['DPDK_PCI_ADDR']) >> + sys.exit(0) >> + >> +mlx5_ib_available = Path('/sys/module/mlx5_ib').exists() >> + >> +for device in sorted(Path('/sys/bus/pci/devices').iterdir()): >> + class_path = device / 'class' >> + # Only consider Network class devices >> + if class_path.read_text().strip() != '0x020000': >> + continue >> + kmod_path = device / 'driver' / 'module' >> + kmod_name = kmod_path.resolve().name >> + # Devices of interest: >> + # - device is bound to vfio_pci or igb_uio, >> + # - device is bound to mlx5_core and mlx5 is loaded, >> + if (kmod_name not in ['vfio_pci', 'igb_uio'] and >> + (kmod_name not in ['mlx5_core'] or not mlx5_ib_available)): > > Flake8 is complaining about this. But for some reason, I like this better ;) > Quick online search reviews unclear interpretations, so I would leave it as > is… > > system-dpdk-find-device.py:39:9: E129 visually indented line with same indent > as next logical line > >> + continue >> + print(device.resolve().name) >> + sys.exit(0) >> + >> +sys.exit(1) >> diff --git a/tests/system-dpdk-macros.at b/tests/system-dpdk-macros.at >> index b3614f0565..066fae0ba5 100644 >> --- a/tests/system-dpdk-macros.at >> +++ b/tests/system-dpdk-macros.at >> @@ -22,14 +22,8 @@ m4_define([OVS_DPDK_PRE_PHY_SKIP], >> [dnl Perform the precheck >> OVS_DPDK_PRE_CHECK() >> >> - dnl Check if VFIO or UIO driver is loaded >> - AT_SKIP_IF([ ! (lsmod | grep -E "igb_uio|vfio") ], [], [stdout]) >> - >> - dnl Find PCI address candidate, skip if there is no DPDK-compatible NIC >> - AT_CHECK([$DPDK_DIR/usertools/dpdk-devbind.py -s | head -n +4 | tail >> -1], [], [stdout]) >> - AT_CHECK([cat stdout | cut -d" " -s -f1 > PCI_ADDR]) >> - AT_SKIP_IF([ ! test -s PCI_ADDR ]) >> - >> + dnl Check if a device is available for DPDK >> + AT_SKIP_IF([ ! $abs_top_srcdir/tests/system-dpdk-find-device.py > >> DPDK_PCI_ADDR]) >> ]) >> >> >> diff --git a/tests/system-dpdk.at b/tests/system-dpdk.at >> index 7b5d063f62..894e01316f 100644 >> --- a/tests/system-dpdk.at >> +++ b/tests/system-dpdk.at >> @@ -7,6 +7,8 @@ m4_define([SYSTEM_DPDK_ALLOWED_LOGS],[ >> \@does not exist. The Open vSwitch kernel module is probably not loaded.@d >> \@EAL: Invalid NUMA socket, default to 0@d >> \@EAL: No \(available\|free\) hugepages reported in hugepages-@d >> +\@Rx checksum offload is not supported on@d >> +\@does not support MTU configuration,@d >> ]) >> >> dnl >> -------------------------------------------------------------------------- >> @@ -34,7 +36,7 @@ OVS_DPDK_START() >> >> dnl Add userspace bridge and attach it to OVS >> AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev]) >> -AT_CHECK([ovs-vsctl add-port br10 phy0 -- set Interface phy0 type=dpdk >> options:dpdk-devargs=$(cat PCI_ADDR)], [], [stdout], [stderr]) >> +AT_CHECK([ovs-vsctl add-port br10 phy0 -- set Interface phy0 type=dpdk >> options:dpdk-devargs=$(cat DPDK_PCI_ADDR)], [], [stdout], [stderr]) >> AT_CHECK([ovs-vsctl show], [], [stdout]) >> sleep 2 >> >> -- >> 2.23.0 _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
