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virtio-scsi-test: add missing feature negotiation 

VIRTIO Device Initialization requires feature negotiation.  Currently
virtio-scsi-test.c is non-compliant.

libqos tests acknowledge all feature bits advertised by the device,
except VIRTIO_F_BAD_FEATURE (which devices use to detect broken
drivers!) and VIRTIO_RING_F_EVENT_IDX (which is not implemented in
libqos and accepting it would break notifications).

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20191023100425.12168-5-stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Thomas Huth" <thuth@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2019-10-23 11:04:13 +01:00 committed by Michael S. Tsirkin
parent a9340358f4
commit e73255be96
1 changed files with 8 additions and 0 deletions
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8
tests/virtio-scsi-test.c
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@ -123,10 +123,16 @@ static QVirtioSCSIQueues *qvirtio_scsi_init(QVirtioDevice *dev)
QVirtioSCSIQueues *vs;
const uint8_t test_unit_ready_cdb[VIRTIO_SCSI_CDB_SIZE] = {};
struct virtio_scsi_cmd_resp resp;
uint64_t features;
int i;
vs = g_new0(QVirtioSCSIQueues, 1);
vs->dev = dev;
features = qvirtio_get_features(dev);
features &= ~(QVIRTIO_F_BAD_FEATURE | (1ull << VIRTIO_RING_F_EVENT_IDX));
qvirtio_set_features(dev, features);
vs->num_queues = qvirtio_config_readl(dev, 0);
g_assert_cmpint(vs->num_queues, <, MAX_NUM_QUEUES);
@ -135,6 +141,8 @@ static QVirtioSCSIQueues *qvirtio_scsi_init(QVirtioDevice *dev)
vs->vq[i] = qvirtqueue_setup(dev, alloc, i);
}
qvirtio_set_driver_ok(dev);
/* Clear the POWER ON OCCURRED unit attention */
g_assert_cmpint(virtio_scsi_do_command(vs, test_unit_ready_cdb,
NULL, 0, NULL, 0, &resp),