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[Qemu-devel] [PATCH v1 20/37] vhost-pci-slave/msg: VHOST_USER_SET_VRING_
From: |
Wei Wang |
Subject: |
[Qemu-devel] [PATCH v1 20/37] vhost-pci-slave/msg: VHOST_USER_SET_VRING_KICK |
Date: |
Sat, 17 Dec 2016 18:43:30 +0800 |
Update the kickfd to the head node in the list.
This version of vhost-pci expects the driver to use polling to receive
packets. So, other than storing the kickfd, we don't do anything more.
Signed-off-by: Wei Wang <address@hidden>
---
hw/virtio/vhost-pci-slave.c | 19 +++++++++++++++++++
include/hw/virtio/vhost-pci-slave.h | 1 +
2 files changed, 20 insertions(+)
diff --git a/hw/virtio/vhost-pci-slave.c b/hw/virtio/vhost-pci-slave.c
index a55861a..dff1c88 100644
--- a/hw/virtio/vhost-pci-slave.c
+++ b/hw/virtio/vhost-pci-slave.c
@@ -11,6 +11,7 @@
*/
#include <qemu/osdep.h>
+#include <qemu/sockets.h>
#include "qapi/error.h"
#include "qemu/error-report.h"
@@ -223,6 +224,13 @@ static void vp_slave_set_vring_addr(VhostUserMsg *msg)
sizeof(struct vhost_vring_addr));
}
+static void vp_slave_set_vring_kick(int fd)
+{
+ PeerVqNode *pvq_node = QLIST_FIRST(&vp_slave->pvq_list);
+ if (!pvq_node)
+ pvq_node->kickfd = fd;
+}
+
static int vp_slave_can_read(void *opaque)
{
return VHOST_USER_HDR_SIZE;
@@ -295,6 +303,17 @@ static void vp_slave_read(void *opaque, const uint8_t
*buf, int size)
case VHOST_USER_SET_VRING_ADDR:
vp_slave_set_vring_addr(&msg);
break;
+ case VHOST_USER_SET_VRING_KICK:
+ /* consume the fd */
+ qemu_chr_fe_get_msgfds(chr_be, fds, 1);
+ vp_slave_set_vring_kick(fds[0]);
+ /*
+ * This is a non-blocking eventfd.
+ * The receive function forces it to be blocking,
+ * so revert it back to non-blocking.
+ */
+ qemu_set_nonblock(fds[0]);
+ break;
default:
error_report("vhost-pci-slave does not support msg request = %d",
msg.request);
diff --git a/include/hw/virtio/vhost-pci-slave.h
b/include/hw/virtio/vhost-pci-slave.h
index 439198d..4b6b213 100644
--- a/include/hw/virtio/vhost-pci-slave.h
+++ b/include/hw/virtio/vhost-pci-slave.h
@@ -10,6 +10,7 @@
typedef struct PeerVqNode {
uint16_t last_avail_idx;
uint32_t vring_num;
+ int kickfd;
struct vhost_vring_addr addr;
QLIST_ENTRY(PeerVqNode) node;
} PeerVqNode;
--
2.7.4
- [Qemu-devel] [PATCH v1 10/37] vhost-pci-slave/msg: VHOST_USER_SET_PROTOCOL_FEATURES, (continued)
- [Qemu-devel] [PATCH v1 10/37] vhost-pci-slave/msg: VHOST_USER_SET_PROTOCOL_FEATURES, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 11/37] vhost-user/msg: VHOST_USER_PROTOCOL_F_SET_DEVICE_ID, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 12/37] vhost-pci-slave/msg: VHOST_USER_SET_DEVICE_ID, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 14/37] vhost-pci-slave/msg: VHOST_USER_SET_OWNER, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 13/37] vhost-pci-slave/msg: VHOST_USER_GET_QUEUE_NUM, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 15/37] vhost-pci-slave/msg: VHOST_USER_SET_MEM_TABLE, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 17/37] vhost-pci-slave/msg: VHOST_USER_SET_VRING_BASE, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 16/37] vhost-pci-slave/msg: VHOST_USER_SET_VRING_NUM, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 19/37] vhost-pci-slave/msg: VHOST_USER_SET_VRING_ADDR, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 18/37] vhost-user: send guest physical address of virtqueues to the slave, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 20/37] vhost-pci-slave/msg: VHOST_USER_SET_VRING_KICK,
Wei Wang <=
- [Qemu-devel] [PATCH v1 21/37] vhost-pci-slave/msg: VHOST_USER_SET_VRING_CALL, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 22/37] vhost-pci-slave/msg: VHOST_USER_SET_VRING_ENABLE, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 24/37] vhost-pci-slave/msg: VHOST_USER_SET_LOG_FD, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 23/37] vhost-pci-slave/msg: VHOST_USER_SET_LOG_BASE, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 25/37] vhost-pci-slave/msg: VHOST_USER_SEND_RARP, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 26/37] vhost-pci-slave/msg: VHOST_USER_GET_VRING_BASE, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 27/37] vhost-pci-net: pass the info collected by vp_slave to the device, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 30/37] vhost-pci-slave/msg: VHOST_USER_SET_VHOST_PCI (stop), Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 28/37] vhost-pci-net: pass the mem and vring info to the driver, Wei Wang, 2016/12/17
- [Qemu-devel] [PATCH v1 29/37] vhost-pci-slave/msg: VHOST_USER_SET_VHOST_PCI (start), Wei Wang, 2016/12/17