[PATCH v5 02/11] net/virtio: add virtio 1.1 defines
From: Jens Freimann <hidden>
Date: 2018-09-06 18:20:05
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Signed-off-by: Jens Freimann <redacted> --- drivers/net/virtio/virtio_ring.h | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/virtio/virtio_ring.h b/drivers/net/virtio/virtio_ring.h
index cea4d441e..e2c597434 100644
--- a/drivers/net/virtio/virtio_ring.h
+++ b/drivers/net/virtio/virtio_ring.h@@ -15,7 +15,11 @@ #define VRING_DESC_F_WRITE 2 /* This means the buffer contains a list of buffer descriptors. */ #define VRING_DESC_F_INDIRECT 4 +/* This flag means the descriptor was made available by the driver */ +#define VRING_DESC_F_AVAIL(b) ((uint16_t)(b) << 7) +/* This flag means the descriptor was used by the device */ +#define VRING_DESC_F_USED(b) ((uint16_t)(b) << 15) /* The Host uses this in used->flags to advise the Guest: don't kick me * when you add a buffer. It's unreliable, so it's simply an * optimization. Guest will still kick if it's out of buffers. */
--
2.17.1