[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <1351723614-4145-3-git-send-email-sjur@brendeland.net>
Date: Wed, 31 Oct 2012 23:46:52 +0100
From: Sjur Brændeland <sjur@...ndeland.net>
To: Rusty Russell <rusty@...tcorp.com.au>
Cc: "Michael S. Tsirkin" <mst@...hat.com>,
Linus Walleij <linus.walleij@...aro.org>,
Ohad Ben-Cohen <ohad@...ery.com>, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org,
sjur@...ndeland.net, dmitry.tarnyagin@...ricsson.com,
Sjur Brændeland <sjur.brandeland@...ricsson.com>
Subject: [RFC virtio-next 2/4] include/vring.h: Add support for reversed vritio rings.
From: Sjur Brændeland <sjur.brandeland@...ricsson.com>
Add last avilable index to the vring_virtqueue structure,
this is done to prepare for implementation of the reversed vring.
Signed-off-by: Sjur Brændeland <sjur.brandeland@...ricsson.com>
---
drivers/virtio/vring.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/virtio/vring.h b/drivers/virtio/vring.h
index b997fc3..3b53961 100644
--- a/drivers/virtio/vring.h
+++ b/drivers/virtio/vring.h
@@ -51,6 +51,9 @@ struct vring_virtqueue
/* Last used index we've seen. */
u16 last_used_idx;
+ /* Last avail index seen. NOTE: Only used for reversed rings.*/
+ u16 last_avail_idx;
+
/* How to notify other side. FIXME: commonalize hcalls! */
void (*notify)(struct virtqueue *vq);
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists