> Hi Michael,
>
> The patch uses MTU sizes > 9000 values to check and fail but 9000 may not
> be good value for older NICs
> As they might fail the test ?
>
> Can we kind of confirm is MTU > 9000 is safe if not we can just use a lower
> value like 1500 etc etc to be safe
> So that we don't fail un-necessary on the older NICs.
>
Hi Amber, fair point , 9000 MTU might not be supported but given the nature of
OVS I think it's a safe assumption, if not then maybe it requires further
discussion on the DPDK side of exposing max MTU, but for now I think this is
safe enough.
Thanks
Ian.
> Regards
> Amber
>
> > > -----Original Message-----
> > > From: Phelan, Michael <[email protected]>
> > > Sent: Monday 11 July 2022 14:49
> > > To: [email protected]
> > > Cc: Stokes, Ian <[email protected]>; [email protected];
> > > [email protected]; [email protected]; Phelan, Michael
> > > <[email protected]>; Pai G, Sunil <[email protected]>
> > > Subject: [PATCH v3] tests: Add OVS-DPDK MTU unit tests.
> > >
> > > This adds 8 new unit tests to the 'check-dpdk' subsystem that will
> > > test Maximum Transmission Unit (MTU) functionality.
> > >
> > > Signed-off-by: Michael Phelan <[email protected]>
> > > Signed-off-by: Sunil Pai G <[email protected]>
> > > Co-authored-by: Sunil Pai G <[email protected]>
> > >
> > > ---
> > > v3:
> > > - Capitalize first letter in comments.
> > > - Add [] in AT_CHECK commands.
> > > - Remove unnecessary "," in grep commands.
> > > - Establish connection with vhost front end (virtio-user) using
> > > testpmd first in all vport tests.
> > >
> > > v2:
> > > - Removed DB checks when confirming MTU value in all tests.
> > > - Added checks to catch errors in MTU setup or if device does not
> > > support MTU configuration.
> > > - Fixed typo in comments.
> > > ---
> > > ---
> > > tests/system-dpdk.at | 376
> > > +++++++++++++++++++++++++++++++++++++++++++
> > > 1 file changed, 376 insertions(+)
> > >
> > > diff --git a/tests/system-dpdk.at b/tests/system-dpdk.at index
> > > ea2f3509b..c04588e89 100644
> > > --- a/tests/system-dpdk.at
> > > +++ b/tests/system-dpdk.at
> > > @@ -384,6 +384,382 @@ dnl
> > > -------------------------------------------------------------
> > > -------------
> > >
> > >
> > >
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +dnl MTU increase phy port
> > > +AT_SETUP([OVS-DPDK - MTU increase phy port])
> > > +AT_KEYWORDS([dpdk])
> > > +
> > > +OVS_DPDK_PRE_PHY_SKIP()
> > > +OVS_DPDK_START()
> > > +
> > > +dnl First set MTU to its default value and confirm that value, then
> > > +increase the MTU value and confirm the new value
> > > +
> > > +dnl Add userspace bridge and attach it to OVS with default MTU value
> > > +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=$(cat PCI_ADDR)], [],
> > > +[stdout], [stderr]) AT_CHECK([ovs-vsctl show], [], [stdout]) sleep 2
> > > +
> > > +dnl Check default MTU value in the datapath AT_CHECK([ovs-appctl
> > > +dpctl/show], [], [stdout]) AT_CHECK([egrep 'mtu=1500' stdout], [],
> > > +[stdout])
> > > +
> > > +dnl Increase MTU value and check in the datapath AT_CHECK([ovs-vsctl
> > > +set Interface phy0 mtu_request=9000])
> > > +
> > > +dnl Fail if MTU is not supported
> > > +AT_FAIL_IF([grep "Interface phy0 does not support MTU
> configuration"
> > > +ovs-vswitchd.log], [], [stdout])
> > > +
> > > +dnl Fail if error is encountered during MTU setup AT_FAIL_IF([grep
> > > +"Interface phy0 MTU (9000) setup error" ovs-vswitchd.log], [],
> > > +[stdout])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/show], [], [stdout]) AT_CHECK([egrep
> > > +'mtu=9000' stdout], [], [stdout])
> > > +
> > > +
> > > +dnl Clean up
> > > +AT_CHECK([ovs-vsctl del-port br10 phy0], [], [stdout], [stderr])
> > > +OVS_VSWITCHD_STOP("[SYSTEM_DPDK_ALLOWED_LOGS]")
> > > +AT_CLEANUP
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +
> > > +
> > > +
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +dnl MTU decrease phy port
> > > +AT_SETUP([OVS-DPDK - MTU decrease phy port])
> > > +AT_KEYWORDS([dpdk])
> > > +
> > > +OVS_DPDK_PRE_PHY_SKIP()
> > > +OVS_DPDK_START()
> > > +
> > > +dnl First set an increased MTU value and confirm that value, then
> > > +decrease the MTU value and confirm the new value
> > > +
> > > +dnl Add userspace bridge and attach it to OVS and modify MTU value
> > > +AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10
> > > +datapath_type=netdev]) AT_CHECK([ovs-vsctl add-port br10 phy0 --
> set
> > > +Interface phy0 type=dpdk options:dpdk-devargs=$(cat PCI_ADDR)], [],
> > > +[stdout], [stderr]) AT_CHECK([ovs-vsctl set Interface phy0
> > > +mtu_request=9000]) AT_CHECK([ovs-vsctl show], [], [stdout]) sleep 2
> > > +
> > > +dnl Fail if MTU is not supported
> > > +AT_FAIL_IF([grep "Interface phy0 does not support MTU
> configuration"
> > > +ovs-vswitchd.log], [], [stdout])
> > > +
> > > +dnl Fail if error is encountered during MTU setup AT_FAIL_IF([grep
> > > +"Interface phy0 MTU (9000) setup error" ovs-vswitchd.log], [],
> > > +[stdout])
> > > +
> > > +dnl Check MTU value in the datapath
> > > +AT_CHECK([ovs-appctl dpctl/show], [], [stdout]) AT_CHECK([egrep
> > > +'mtu=9000' stdout], [], [stdout])
> > > +
> > > +dnl Decrease MTU value and check in the datapath AT_CHECK([ovs-
> vsctl
> > > +set Interface phy0 mtu_request=2000])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/show], [], [stdout]) AT_CHECK([egrep
> > > +'mtu=2000' stdout], [], [stdout])
> > > +
> > > +
> > > +dnl Clean up
> > > +AT_CHECK([ovs-vsctl del-port br10 phy0], [], [stdout], [stderr])
> > > +OVS_VSWITCHD_STOP("[SYSTEM_DPDK_ALLOWED_LOGS]")
> > > +AT_CLEANUP
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +
> > > +
> > > +
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +dnl MTU increase vport port
> > > +AT_SETUP([OVS-DPDK - MTU increase vport port])
> > > +AT_KEYWORDS([dpdk])
> > > +
> > > +AT_SKIP_IF([! which dpdk-testpmd >/dev/null 2>/dev/null])
> > > +OVS_DPDK_PRE_CHECK()
> > > +OVS_DPDK_START()
> > > +
> > > +dnl Find number of sockets
> > > +AT_CHECK([lscpu], [], [stdout])
> > > +AT_CHECK([cat stdout | grep "NUMA node(s)" | awk '{c=1; while
> > > +(c++<$(3)) {printf "512,"}; print "512"}' > NUMA_NODE])
> > > +
> > > +dnl Add userspace bridge and attach it to OVS with default MTU value
> > > +AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10
> > > +datapath_type=netdev]) AT_CHECK([ovs-vsctl add-port br10
> > > +dpdkvhostuserclient0 -- set Interface dpdkvhostuserclient0
> > > +type=dpdkvhostuserclient
> > > +options:vhost-server-path=$OVS_RUNDIR/dpdkvhostclient0], [],
> > > +[stdout],
> > > +[stderr]) AT_CHECK([ovs-vsctl show], [], [stdout]) sleep 2
> > > +
> > > +dnl Parse log file
> > > +AT_CHECK([grep "VHOST_CONFIG: vhost-user client: socket created"
> > > +ovs-vswitchd.log], [], [stdout]) AT_CHECK([grep "vHost User device
> > > +'dpdkvhostuserclient0' created in 'client' mode, using client socket"
> > > +ovs-vswitchd.log], [], [stdout]) AT_CHECK([grep "VHOST_CONFIG:
> > > +$OVS_RUNDIR/dpdkvhostclient0: reconnecting..." ovs-vswitchd.log], [],
> > > +[stdout])
> > > +
> > > +dnl Execute testpmd in background
> > > +on_exit "pkill -f -x -9 'tail -f /dev/null'"
> > > +tail -f /dev/null | dpdk-testpmd --socket-mem="$(cat NUMA_NODE)" -
> -no-
> > pci\
> > > + --
> > vdev="net_virtio_user,path=$OVS_RUNDIR/dpdkvhostclient0,server=1"
> > > \
> > > + --vdev="net_tap0,iface=tap0" --file-prefix page0 \
> > > + --single-file-segments -- -a
> > > +>$OVS_RUNDIR/testpmd-dpdkvhostuserclient0.log 2>&1 &
> > > +
> > > +OVS_WAIT_UNTIL([grep "virtio is now ready for processing"
> > > +ovs-vswitchd.log])
> > > +
> > > +dnl Check default MTU value in the datapath AT_CHECK([ovs-appctl
> > > +dpctl/show], [], [stdout]) AT_CHECK([egrep 'mtu=1500' stdout], [],
> > > +[stdout])
> > > +
> > > +dnl Increase MTU value and check in the datapath AT_CHECK([ovs-vsctl
> > > +set Interface dpdkvhostuserclient0 mtu_request=9000])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/show], [], [stdout]) AT_CHECK([egrep
> > > +'mtu=9000' stdout], [], [stdout])
> > > +
> > > +dnl Clean up
> > > +AT_CHECK([ovs-vsctl del-port br10 dpdkvhostuserclient0], [],
> > > +[stdout],
> > > +[stderr]) OVS_VSWITCHD_STOP("m4_join([],
> > > [SYSTEM_DPDK_ALLOWED_LOGS], [
> > > +\@VHOST_CONFIG: failed to connect to
> $OVS_RUNDIR/dpdkvhostclient0:
> > No
> > > +such file or directory@d
> > > +])")
> > > +AT_CLEANUP
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +
> > > +
> > > +
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +dnl MTU decrease vport port
> > > +AT_SETUP([OVS-DPDK - MTU decrease vport port])
> > > +AT_KEYWORDS([dpdk])
> > > +
> > > +AT_SKIP_IF([! which dpdk-testpmd >/dev/null 2>/dev/null])
> > > +OVS_DPDK_PRE_CHECK()
> > > +OVS_DPDK_START()
> > > +
> > > +dnl Find number of sockets
> > > +AT_CHECK([lscpu], [], [stdout])
> > > +AT_CHECK([cat stdout | grep "NUMA node(s)" | awk '{c=1; while
> > > +(c++<$(3)) {printf "512,"}; print "512"}' > NUMA_NODE])
> > > +
> > > +dnl Add userspace bridge and attach it to OVS and modify MTU value
> > > +AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10
> > > +datapath_type=netdev]) AT_CHECK([ovs-vsctl add-port br10
> > > +dpdkvhostuserclient0 -- set Interface dpdkvhostuserclient0
> > > +type=dpdkvhostuserclient
> > > +options:vhost-server-path=$OVS_RUNDIR/dpdkvhostclient0], [],
> > > +[stdout],
> > > +[stderr]) AT_CHECK([ovs-vsctl set Interface dpdkvhostuserclient0
> > > +mtu_request=9000]) AT_CHECK([ovs-vsctl show], [], [stdout]) sleep 2
> > > +
> > > +dnl Parse log file
> > > +AT_CHECK([grep "VHOST_CONFIG: vhost-user client: socket created"
> > > +ovs-vswitchd.log], [], [stdout]) AT_CHECK([grep "vHost User device
> > > +'dpdkvhostuserclient0' created in 'client' mode, using client socket"
> > > +ovs-vswitchd.log], [], [stdout]) AT_CHECK([grep "VHOST_CONFIG:
> > > +$OVS_RUNDIR/dpdkvhostclient0: reconnecting..." ovs-vswitchd.log], [],
> > > +[stdout])
> > > +
> > > +dnl Execute testpmd in background
> > > +on_exit "pkill -f -x -9 'tail -f /dev/null'"
> > > +tail -f /dev/null | dpdk-testpmd --socket-mem="$(cat NUMA_NODE)" -
> -no-
> > pci\
> > > + --
> > vdev="net_virtio_user,path=$OVS_RUNDIR/dpdkvhostclient0,server=1"
> > > \
> > > + --vdev="net_tap0,iface=tap0" --file-prefix page0 \
> > > + --single-file-segments -- -a
> > > +>$OVS_RUNDIR/testpmd-dpdkvhostuserclient0.log 2>&1 &
> > > +
> > > +OVS_WAIT_UNTIL([grep "virtio is now ready for processing"
> > > +ovs-vswitchd.log])
> > > +
> > > +dnl Check MTU value in the datapath
> > > +AT_CHECK([ovs-appctl dpctl/show], [], [stdout]) AT_CHECK([egrep
> > > +'mtu=9000' stdout], [], [stdout])
> > > +
> > > +dnl Decrease MTU value and check in the datapath AT_CHECK([ovs-
> vsctl
> > > +set Interface dpdkvhostuserclient0 mtu_request=2000])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/show], [], [stdout]) AT_CHECK([egrep
> > > +'mtu=2000' stdout], [], [stdout])
> > > +
> > > +dnl Clean up
> > > +AT_CHECK([ovs-vsctl del-port br10 dpdkvhostuserclient0], [],
> > > +[stdout],
> > > +[stderr]) OVS_VSWITCHD_STOP("m4_join([],
> > > [SYSTEM_DPDK_ALLOWED_LOGS], [
> > > +\@VHOST_CONFIG: failed to connect to
> $OVS_RUNDIR/dpdkvhostclient0:
> > No
> > > +such file or directory@d
> > > +])")
> > > +AT_CLEANUP
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +
> > > +
> > > +
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +dnl MTU upper bound phy port
> > > +AT_SETUP([OVS-DPDK - MTU upper bound phy port])
> > > +AT_KEYWORDS([dpdk])
> > > +
> > > +OVS_DPDK_PRE_PHY_SKIP()
> > > +OVS_DPDK_START()
> > > +
> > > +dnl Add userspace bridge and attach it to OVS and set MTU value to
> > > +max upper bound AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10
> > > +datapath_type=netdev]) AT_CHECK([ovs-vsctl add-port br10 phy0 --
> set
> > > +Interface phy0 type=dpdk options:dpdk-devargs=$(cat PCI_ADDR)], [],
> > > +[stdout], [stderr]) AT_CHECK([ovs-vsctl set Interface phy0
> > > +mtu_request=9702]) AT_CHECK([ovs-vsctl show], [], [stdout]) sleep 2
> > > +
> > > +dnl Fail if MTU is not supported
> > > +AT_FAIL_IF([grep "Interface phy0 does not support MTU
> configuration"
> > > +ovs-vswitchd.log], [], [stdout])
> > > +
> > > +dnl Fail if error is encountered during MTU setup AT_FAIL_IF([grep
> > > +"Interface phy0 MTU (9702) setup error" ovs-vswitchd.log], [],
> > > +[stdout])
> > > +
> > > +dnl Check MTU value in the datapath
> > > +AT_CHECK([ovs-appctl dpctl/show], [], [stdout]) AT_CHECK([egrep
> > > +'mtu=9702' stdout], [], [stdout])
> > > +
> > > +dnl Set MTU value above upper bound and check for error
> > > +AT_CHECK([ovs-vsctl set Interface phy0 mtu_request=9711])
> > > +AT_CHECK([grep "phy0: unsupported MTU 9711" ovs-vswitchd.log], [],
> > > +[stdout])
> > > +
> > > +
> > > +dnl Clean up
> > > +AT_CHECK([ovs-vsctl del-port br10 phy0], [], [stdout], [stderr])
> > > +OVS_VSWITCHD_STOP("m4_join([], [SYSTEM_DPDK_ALLOWED_LOGS],
> [
> > > +\@phy0: unsupported MTU 9711@d
> > > +\@failed to set MTU for network device phy0: Invalid argument@d
> > > +])")
> > > +AT_CLEANUP
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +
> > > +
> > > +
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +dnl MTU lower bound phy port
> > > +AT_SETUP([OVS-DPDK - MTU lower bound phy port])
> > > +AT_KEYWORDS([dpdk])
> > > +
> > > +OVS_DPDK_PRE_PHY_SKIP()
> > > +OVS_DPDK_START()
> > > +
> > > +dnl Add userspace bridge and attach it to OVS and set MTU value to
> > > +min lower bound 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=$(cat PCI_ADDR)], [],
> > > +[stdout], [stderr]) AT_CHECK([ovs-vsctl set Interface phy0
> > > +mtu_request=68]) AT_CHECK([ovs-vsctl show], [], [stdout]) sleep 2
> > > +
> > > +dnl Fail if MTU is not supported
> > > +AT_FAIL_IF([grep "Interface phy0 does not support MTU
> configuration"
> > > +ovs-vswitchd.log], [], [stdout])
> > > +
> > > +dnl Fail if error is encountered during MTU setup AT_FAIL_IF([grep
> > > +"Interface phy0 MTU (68) setup error" ovs-vswitchd.log], [],
> > > +[stdout])
> > > +
> > > +dnl Check MTU value in the datapath
> > > +AT_CHECK([ovs-appctl dpctl/show], [], [stdout]) AT_CHECK([egrep
> > > +'mtu=68' stdout], [], [stdout])
> > > +
> > > +dnl Set MTU value below lower bound and check for error
> > > +AT_CHECK([ovs-vsctl set Interface phy0 mtu_request=67])
> > > +AT_CHECK([grep
> > > +"phy0: unsupported MTU 67" ovs-vswitchd.log], [], [stdout])
> > > +
> > > +
> > > +dnl Clean up
> > > +AT_CHECK([ovs-vsctl del-port br10 phy0], [], [stdout], [stderr])
> > > +OVS_VSWITCHD_STOP("m4_join([], [SYSTEM_DPDK_ALLOWED_LOGS],
> [
> > > +\@phy0: unsupported MTU 67@d
> > > +\@failed to set MTU for network device phy0: Invalid argument@d
> > > +])")
> > > +AT_CLEANUP
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +
> > > +
> > > +
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +dnl MTU upper bound vport port
> > > +AT_SETUP([OVS-DPDK - MTU upper bound vport port])
> > > +AT_KEYWORDS([dpdk])
> > > +
> > > +AT_SKIP_IF([! which dpdk-testpmd >/dev/null 2>/dev/null])
> > > +OVS_DPDK_PRE_CHECK()
> > > +OVS_DPDK_START()
> > > +
> > > +dnl Find number of sockets
> > > +AT_CHECK([lscpu], [], [stdout])
> > > +AT_CHECK([cat stdout | grep "NUMA node(s)" | awk '{c=1; while
> > > +(c++<$(3)) {printf "512,"}; print "512"}' > NUMA_NODE])
> > > +
> > > +dnl Add userspace bridge and attach it to OVS and set MTU value to
> > > +max upper bound AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10
> > > +datapath_type=netdev]) AT_CHECK([ovs-vsctl add-port br10
> > > +dpdkvhostuserclient0 -- set Interface dpdkvhostuserclient0
> > > +type=dpdkvhostuserclient
> > > +options:vhost-server-path=$OVS_RUNDIR/dpdkvhostclient0], [],
> > > +[stdout],
> > > +[stderr]) AT_CHECK([ovs-vsctl set Interface dpdkvhostuserclient0
> > > +mtu_request=9702]) AT_CHECK([ovs-vsctl show], [], [stdout]) sleep 2
> > > +
> > > +dnl Execute testpmd in background
> > > +on_exit "pkill -f -x -9 'tail -f /dev/null'"
> > > +tail -f /dev/null | dpdk-testpmd --socket-mem="$(cat NUMA_NODE)" -
> -no-
> > pci\
> > > + --
> > vdev="net_virtio_user,path=$OVS_RUNDIR/dpdkvhostclient0,server=1"
> > > \
> > > + --vdev="net_tap0,iface=tap0" --file-prefix page0 \
> > > + --single-file-segments -- -a
> > > +>$OVS_RUNDIR/testpmd-dpdkvhostuserclient0.log 2>&1 &
> > > +
> > > +OVS_WAIT_UNTIL([grep "virtio is now ready for processing"
> > > +ovs-vswitchd.log])
> > > +
> > > +dnl Check MTU value in the datapath
> > > +AT_CHECK([ovs-appctl dpctl/show], [], [stdout]) AT_CHECK([egrep
> > > +'mtu=9702' stdout], [], [stdout])
> > > +
> > > +dnl Set MTU value above upper bound and check for error
> > > +AT_CHECK([ovs-vsctl set Interface dpdkvhostuserclient0
> > > +mtu_request=9711]) AT_CHECK([grep "dpdkvhostuserclient0:
> > unsupported
> > > +MTU 9711" ovs-vswitchd.log], [], [stdout])
> > > +
> > > +dnl Clean up
> > > +AT_CHECK([ovs-vsctl del-port br10 dpdkvhostuserclient0], [],
> > > +[stdout],
> > > +[stderr]) OVS_VSWITCHD_STOP("m4_join([],
> > > [SYSTEM_DPDK_ALLOWED_LOGS], [
> > > +\@VHOST_CONFIG: failed to connect to
> $OVS_RUNDIR/dpdkvhostclient0:
> > No
> > > +such file or directory@d
> > > +\@dpdkvhostuserclient0: unsupported MTU 9711@d \@failed to set
> MTU
> > > +for network device dpdkvhostuserclient0: Invalid argument@d
> > > +])")
> > > +AT_CLEANUP
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +
> > > +
> > > +
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +dnl MTU lower bound vport port
> > > +AT_SETUP([OVS-DPDK - MTU lower bound vport port])
> > > +AT_KEYWORDS([dpdk])
> > > +
> > > +AT_SKIP_IF([! which dpdk-testpmd >/dev/null 2>/dev/null])
> > > +OVS_DPDK_PRE_CHECK()
> > > +OVS_DPDK_START()
> > > +
> > > +dnl Find number of sockets
> > > +AT_CHECK([lscpu], [], [stdout])
> > > +AT_CHECK([cat stdout | grep "NUMA node(s)" | awk '{c=1; while
> > > +(c++<$(3)) {printf "512,"}; print "512"}' > NUMA_NODE])
> > > +
> > > +dnl Add userspace bridge and attach it to OVS and set MTU value to
> > > +min lower bound AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10
> > > +datapath_type=netdev]) AT_CHECK([ovs-vsctl add-port br10
> > > +dpdkvhostuserclient0 -- set Interface dpdkvhostuserclient0
> > > +type=dpdkvhostuserclient
> > > +options:vhost-server-path=$OVS_RUNDIR/dpdkvhostclient0], [],
> > > +[stdout],
> > > +[stderr]) AT_CHECK([ovs-vsctl set Interface dpdkvhostuserclient0
> > > +mtu_request=68]) AT_CHECK([ovs-vsctl show], [], [stdout]) sleep 2
> > > +
> > > +dnl Parse log file
> > > +AT_CHECK([grep "VHOST_CONFIG: vhost-user client: socket created"
> > > +ovs-vswitchd.log], [], [stdout]) AT_CHECK([grep "vHost User device
> > > +'dpdkvhostuserclient0' created in 'client' mode, using client socket"
> > > +ovs-vswitchd.log], [], [stdout]) AT_CHECK([grep "VHOST_CONFIG:
> > > +$OVS_RUNDIR/dpdkvhostclient0: reconnecting..." ovs-vswitchd.log], [],
> > > +[stdout])
> > > +
> > > +dnl Execute testpmd in background
> > > +on_exit "pkill -f -x -9 'tail -f /dev/null'"
> > > +tail -f /dev/null | dpdk-testpmd --socket-mem="$(cat NUMA_NODE)" -
> -no-
> > pci\
> > > + --
> > vdev="net_virtio_user,path=$OVS_RUNDIR/dpdkvhostclient0,server=1"
> > > \
> > > + --vdev="net_tap0,iface=tap0" --file-prefix page0 \
> > > + --single-file-segments -- -a
> > > +>$OVS_RUNDIR/testpmd-dpdkvhostuserclient0.log 2>&1 &
> > > +
> > > +OVS_WAIT_UNTIL([grep "virtio is now ready for processing"
> > > +ovs-vswitchd.log])
> > > +
> > > +dnl Check MTU value in the datapath
> > > +AT_CHECK([ovs-appctl dpctl/show], [], [stdout]) AT_CHECK([egrep
> > > +'mtu=68' stdout], [], [stdout])
> > > +
> > > +dnl Set MTU value below lower bound and check for error
> > > +AT_CHECK([ovs-vsctl set Interface dpdkvhostuserclient0
> > > +mtu_request=67]) AT_CHECK([grep "dpdkvhostuserclient0:
> unsupported
> > MTU 67"
> > > +ovs-vswitchd.log], [], [stdout])
> > > +
> > > +
> > > +dnl Clean up
> > > +AT_CHECK([ovs-vsctl del-port br10 dpdkvhostuserclient0], [],
> > > +[stdout],
> > > +[stderr]) OVS_VSWITCHD_STOP("m4_join([],
> > > [SYSTEM_DPDK_ALLOWED_LOGS], [
> > > +\@VHOST_CONFIG: failed to connect to
> $OVS_RUNDIR/dpdkvhostclient0:
> > No
> > > +such file or directory@d
> > > +\@dpdkvhostuserclient0: unsupported MTU 67@d \@failed to set
> MTU
> > for
> > > +network device dpdkvhostuserclient0: Invalid argument@d
> > > +])")
> > > +AT_CLEANUP
> > > +dnl
> > > +---------------------------------------------------------------------
> > > +--
> > > +---
> > > +
> > > +
> > > +
> > > dnl
> > > ----------------------------------------------------------------------
> > > ----
> > > dnl Add standard DPDK PHY port
> > > AT_SETUP([OVS-DPDK - MFEX Autovalidator])
> > > --
> > > 2.25.1
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