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* qapi: virtio: Fix the introduced versionHan Han2022-11-051-17/+17
| | | | | | | | | | The items of qapi/virtio.json are introduced at a5ebce38576. They will be in the version 7.2 not 7.1. Signed-off-by: Han Han <hhan@redhat.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20221101014647.3000801-1-hhan@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* qmp: add QMP command x-query-virtio-queue-elementLaurent Vivier2022-10-091-0/+197
| | | | | | | | | | | | | | | | | This new command shows the information of a VirtQueue element. [Note: Up until v10 of this patch series, virtio.json had many (15+) enums defined (e.g. decoded device features, statuses, etc.). In v10 most of these enums were removed and replaced with string literals. By doing this we get (1) simpler schema, (2) smaller generated code, and (3) less maintenance burden for when new things are added (e.g. devices, device features, etc.).] Signed-off-by: Laurent Vivier <lvivier@redhat.com> Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com> Message-Id: <1660220684-24909-6-git-send-email-jonah.palmer@oracle.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* qmp: add QMP commands for virtio/vhost queue-statusLaurent Vivier2022-10-091-0/+256
| | | | | | | | | | | These new commands show the internal status of a VirtIODevice's VirtQueue and a vhost device's vhost_virtqueue (if active). Signed-off-by: Laurent Vivier <lvivier@redhat.com> Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com> Message-Id: <1660220684-24909-5-git-send-email-jonah.palmer@oracle.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* qmp: decode feature & status bits in virtio-statusLaurent Vivier2022-10-091-20/+231
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Display feature names instead of bitmaps for host, guest, and backend for VirtIODevices. Display status names instead of bitmaps for VirtIODevices. Display feature names instead of bitmaps for backend, protocol, acked, and features (hdev->features) for vhost devices. Decode features according to device ID. Decode statuses according to configuration status bitmap (config_status_map). Decode vhost user protocol features according to vhost user protocol bitmap (vhost_user_protocol_map). Transport features are on the first line. Undecoded bits (if any) are stored in a separate field. [Jonah: Several changes made to this patch from prev. version (v14): - Moved all device features mappings to hw/virtio/virtio.c - Renamed device features mappings (less generic) - Generalized @FEATURE_ENTRY macro for all device mappings - Virtio device feature map definitions include descriptions of feature bits - Moved @VHOST_USER_F_PROTOCOL_FEATURES feature bit from transport feature map to vhost-user-supported device feature mappings (blk, fs, i2c, rng, net, gpu, input, scsi, vsock) - New feature bit added for virtio-vsock: @VIRTIO_VSOCK_F_SEQPACKET - New feature bit added for virtio-iommu: @VIRTIO_IOMMU_F_BYPASS_CONFIG - New feature bit added for virtio-mem: @VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE - New virtio transport feature bit added: @VIRTIO_F_IN_ORDER - Added device feature map definition for virtio-rng ] Signed-off-by: Laurent Vivier <lvivier@redhat.com> Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com> Message-Id: <1660220684-24909-4-git-send-email-jonah.palmer@oracle.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* qmp: add QMP command x-query-virtio-statusLaurent Vivier2022-10-091-0/+222
| | | | | | | | | | | | | | | | | | | This new command shows the status of a VirtIODevice, including its corresponding vhost device's status (if active). Next patch will improve output by decoding feature bits, including vhost device's feature bits (backend, protocol, acked, and features). Also will decode status bits of a VirtIODevice. [Jonah: From patch v12; added a check to @virtio_device_find to ensure synchronicity between @virtio_list and the devices in the QOM composition tree.] Signed-off-by: Laurent Vivier <lvivier@redhat.com> Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com> Message-Id: <1660220684-24909-3-git-send-email-jonah.palmer@oracle.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* qmp: add QMP command x-query-virtioLaurent Vivier2022-10-091-0/+68
This new command lists all the instances of VirtIODevices with their canonical QOM path and name. [Jonah: @virtio_list duplicates information that already exists in the QOM composition tree. However, extracting necessary information from this tree seems to be a bit convoluted. Instead, we still create our own list of realized virtio devices but use @qmp_qom_get with the device's canonical QOM path to confirm that the device exists and is realized. If the device exists but is actually not realized, then we remove it from our list (for synchronicity to the QOM composition tree). Also, the QMP command @x-query-virtio is redundant as @qom-list and @qom-get are sufficient to search '/machine/' for realized virtio devices. However, @x-query-virtio is much more convenient in listing realized virtio devices.] Signed-off-by: Laurent Vivier <lvivier@redhat.com> Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com> Message-Id: <1660220684-24909-2-git-send-email-jonah.palmer@oracle.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>