Messages in this thread Patch in this message | | | From | Stefano Garzarella <> | Subject | [PATCH v4 06/14] vringh: add vringh_kiov_length() helper | Date | Mon, 15 Mar 2021 17:34:42 +0100 |
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This new helper returns the total number of bytes covered by a vringh_kiov.
Suggested-by: Jason Wang <jasowang@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> --- include/linux/vringh.h | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/include/linux/vringh.h b/include/linux/vringh.h index 755211ebd195..84db7b8f912f 100644 --- a/include/linux/vringh.h +++ b/include/linux/vringh.h @@ -199,6 +199,17 @@ static inline void vringh_kiov_cleanup(struct vringh_kiov *kiov) kiov->iov = NULL; } +static inline size_t vringh_kiov_length(struct vringh_kiov *kiov) +{ + size_t len = 0; + int i; + + for (i = kiov->i; i < kiov->used; i++) + len += kiov->iov[i].iov_len; + + return len; +} + void vringh_kiov_advance(struct vringh_kiov *kiov, size_t len); int vringh_getdesc_kern(struct vringh *vrh, -- 2.30.2
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