From 830d70db692e374b55555f4407f96a1ceefdcc97 Mon Sep 17 00:00:00 2001
From: Ouyang Changchun <changchun.ouyang@intel.com>
Date: Thu, 28 May 2015 09:23:06 +0800
Subject: vhost-user: add multi queue support
Based on patch by Nikolay Nikolaev:
Vhost-user will implement the multi queue support in a similar way
to what vhost already has - a separate thread for each queue.
To enable the multi queue functionality - a new command line parameter
"queues" is introduced for the vhost-user netdev.
Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
hw/virtio/vhost-user.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
(limited to 'hw/virtio/vhost-user.c')
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index e7ab8293d1..d6f21634ef 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -210,7 +210,12 @@ static int vhost_user_call(struct vhost_dev *dev, unsigned long int request,
break;
case VHOST_SET_OWNER:
+ break;
+
case VHOST_RESET_OWNER:
+ memcpy(&msg.state, arg, sizeof(struct vhost_vring_state));
+ msg.state.index += dev->vq_index;
+ msg.size = sizeof(m.state);
break;
case VHOST_SET_MEM_TABLE:
@@ -253,17 +258,20 @@ static int vhost_user_call(struct vhost_dev *dev, unsigned long int request,
case VHOST_SET_VRING_NUM:
case VHOST_SET_VRING_BASE:
memcpy(&msg.state, arg, sizeof(struct vhost_vring_state));
+ msg.state.index += dev->vq_index;
msg.size = sizeof(m.state);
break;
case VHOST_GET_VRING_BASE:
memcpy(&msg.state, arg, sizeof(struct vhost_vring_state));
+ msg.state.index += dev->vq_index;
msg.size = sizeof(m.state);
need_reply = 1;
break;
case VHOST_SET_VRING_ADDR:
memcpy(&msg.addr, arg, sizeof(struct vhost_vring_addr));
+ msg.addr.index += dev->vq_index;
msg.size = sizeof(m.addr);
break;
@@ -271,7 +279,7 @@ static int vhost_user_call(struct vhost_dev *dev, unsigned long int request,
case VHOST_SET_VRING_CALL:
case VHOST_SET_VRING_ERR:
file = arg;
- msg.u64 = file->index & VHOST_USER_VRING_IDX_MASK;
+ msg.u64 = (file->index + dev->vq_index) & VHOST_USER_VRING_IDX_MASK;
msg.size = sizeof(m.u64);
if (ioeventfd_enabled() && file->fd > 0) {
fds[fd_num++] = file->fd;
@@ -313,6 +321,7 @@ static int vhost_user_call(struct vhost_dev *dev, unsigned long int request,
error_report("Received bad msg size.");
return -1;
}
+ msg.state.index -= dev->vq_index;
memcpy(arg, &msg.state, sizeof(struct vhost_vring_state));
break;
default:
--
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