[PATCH v3 04/17] virtio: queue_reset: add helper
From: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Date: 2022-01-26 07:35:42
Also in:
bpf, virtualization
Subsystem:
the rest, virtio core · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
Add helper for virtio queue reset. * virtio_reset_vq: reset a queue individually * virtio_enable_resetq: enable a reset queue Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> --- include/linux/virtio_config.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+)
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index 51dd8461d1b6..3c971d9a0a59 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h@@ -260,6 +260,38 @@ int virtio_find_vqs_ctx(struct virtio_device *vdev, unsigned nvqs, desc); } +/** + * virtio_reset_vq - reset a queue individually + * @param: struct virtio_reset_vq + * + * returns 0 on success or error status + * + */ +static inline +int virtio_reset_vq(struct virtio_reset_vq *param) +{ + if (!param->vdev->config->reset_vq) + return -ENOENT; + + return param->vdev->config->reset_vq(param); +} + +/** + * virtio_enable_resetq - enable a reset queue + * @param: struct virtio_reset_vq + * + * returns vq on success or error status + * + */ +static inline +struct virtqueue *virtio_enable_resetq(struct virtio_reset_vq *param) +{ + if (!param->vdev->config->enable_reset_vq) + return ERR_PTR(-ENOENT); + + return param->vdev->config->enable_reset_vq(param); +} + /** * virtio_device_ready - enable vq use in probe function * @vdev: the device
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2.31.0