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zdev: Add support for virtio devices

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Add support for managing virtual I/O ccw (virtio-ccw) devices in
lszdev/chzdev.

New zdev device type virtio. Each virtio device type (blk, net,
gpu, vsock, etc.) is represented by a unique subtype of the virtio
base type.

If the virtio device type is recognized, then it will show up as
virtio-blk or virtio-net, or whatever the virtio device type is.
Otherwise, it will just show up as virtio-ccw.

Fixes: https://github.com/ibm-s390-linux/s390-tools/issues/29
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Peter Jin <pjin@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Peter Jin
2025-05-28 13:03:40 -04:00
committed by Jan Höppner
parent 2d86117167
commit 2349236bb4
7 changed files with 317 additions and 3 deletions
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zdev/src/ccw.c
+3 -1
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@@ -1757,8 +1757,10 @@ static void ccw_st_add_devnodes(struct subtype *st, const char *id,
char *path;
path = ccw_get_dev_path(data->ccwdrv, id);
if (path)
if (path) {
devnode_add_block_from_sysfs(devnodes, path);
devnode_add_net_from_sysfs(devnodes, path);
}
free(path);
}