diff mbox series

[v3,04/17] virtio: queue_reset: add helper

Message ID 20220126073533.44994-5-xuanzhuo@linux.alibaba.com (mailing list archive)
State Not Applicable
Headers show
Series virtio pci support VIRTIO_F_RING_RESET | expand

Checks

Context Check Description
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count fail Series longer than 15 patches (and no cover letter)
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 16 this patch: 16
netdev/cc_maintainers warning 5 maintainers not CCed: andrii@kernel.org kpsingh@kernel.org kafai@fb.com songliubraving@fb.com yhs@fb.com
netdev/build_clang success Errors and warnings before: 18 this patch: 18
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 22 this patch: 22
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 38 lines checked
netdev/kdoc success Errors and warnings before: 5 this patch: 5
netdev/source_inline success Was 0 now: 0
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Xuan Zhuo Jan. 26, 2022, 7:35 a.m. UTC 
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 mbox series

Patch

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