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| author | Stefano Garzarella <sgarzare@redhat.com> | 2021-03-15 17:34:41 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-05-03 04:55:53 -0400 |
| commit | b8c06ad4d67db56ed6bdfb685c134da74e92a2c7 (patch) | |
| tree | 6dc84edb70b95d4802140bb8ae04d0b234645484 /include/linux/vringh.h | |
| parent | 69c13c58bd10f036d6e697e664948952e61acfb1 (diff) | |
| download | lwn-b8c06ad4d67db56ed6bdfb685c134da74e92a2c7.tar.gz lwn-b8c06ad4d67db56ed6bdfb685c134da74e92a2c7.zip | |
vringh: implement vringh_kiov_advance()
In some cases, it may be useful to provide a way to skip a number
of bytes in a vringh_kiov.
Let's implement vringh_kiov_advance() for this purpose, reusing the
code from vringh_iov_xfer().
We replace that code calling the new vringh_kiov_advance().
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20210315163450.254396-6-sgarzare@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/linux/vringh.h')
| -rw-r--r-- | include/linux/vringh.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/vringh.h b/include/linux/vringh.h index 9c077863c8f6..755211ebd195 100644 --- a/include/linux/vringh.h +++ b/include/linux/vringh.h @@ -199,6 +199,8 @@ static inline void vringh_kiov_cleanup(struct vringh_kiov *kiov) kiov->iov = NULL; } +void vringh_kiov_advance(struct vringh_kiov *kiov, size_t len); + int vringh_getdesc_kern(struct vringh *vrh, struct vringh_kiov *riov, struct vringh_kiov *wiov, |