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tests/acceptance: Test virtio-rng on s390 via /dev/hwrng

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/dev/hwrng is only functional if virtio-rng is working right, so let's
add a sanity check for this device node.

Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Tested-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201215183623.110128-3-thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Thomas Huth 2020-12-15 19:36:22 +01:00 committed by Cornelia Huck
parent 09d4455e42
commit 7e549424f0
1 changed files with 15 additions and 2 deletions
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17
tests/acceptance/machine_s390_ccw_virtio.py
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@ -64,9 +64,9 @@ class S390CCWVirtioMachine(Test):
'-append', kernel_command_line,
'-device', 'virtio-net-ccw,devno=fe.1.1111',
'-device',
'virtio-rng-ccw,devno=fe.2.0000,max_revision=0',
'virtio-rng-ccw,devno=fe.2.0000,max_revision=0,id=rn1',
'-device',
'virtio-rng-ccw,devno=fe.3.1234,max_revision=2',
'virtio-rng-ccw,devno=fe.3.1234,max_revision=2,id=rn2',
'-device', 'zpci,uid=5,target=zzz',
'-device', 'virtio-net-pci,id=zzz',
'-device', 'zpci,uid=0xa,fid=12,target=serial',
@ -96,6 +96,19 @@ class S390CCWVirtioMachine(Test):
exec_command_and_wait_for_pattern(self,
'cat /sys/bus/ccw/devices/0.3.1234/virtio?/features',
virtio_rng_features)
# check that /dev/hwrng works - and that it's gone after ejecting
exec_command_and_wait_for_pattern(self,
'dd if=/dev/hwrng of=/dev/null bs=1k count=10',
'10+0 records out')
self.clear_guest_dmesg()
self.vm.command('device_del', id='rn1')
self.wait_for_crw_reports()
self.clear_guest_dmesg()
self.vm.command('device_del', id='rn2')
self.wait_for_crw_reports()
exec_command_and_wait_for_pattern(self,
'dd if=/dev/hwrng of=/dev/null bs=1k count=10',
'dd: /dev/hwrng: No such device')
# verify that we indeed have virtio-net devices (without having the
# virtio-net driver handy)
exec_command_and_wait_for_pattern(self,