[dpdk-dev] [PATCH v3 1/3] virtio-user: add mq in vhost user adapter
Jianfeng Tan
jianfeng.tan at intel.com
Wed Jun 15 11:07:15 CEST 2016
This patch mainly adds method in vhost user adapter to communicate
enable/disable queues messages with vhost user backend, aka,
VHOST_USER_SET_VRING_ENABLE.
Signed-off-by: Jianfeng Tan <jianfeng.tan at intel.com>
---
drivers/net/virtio/virtio_user/vhost.h | 5 +++++
drivers/net/virtio/virtio_user/vhost_user.c | 22 ++++++++++++++++++++++
2 files changed, 27 insertions(+)
diff --git a/drivers/net/virtio/virtio_user/vhost.h b/drivers/net/virtio/virtio_user/vhost.h
index 4e04ede..8d1e505 100644
--- a/drivers/net/virtio/virtio_user/vhost.h
+++ b/drivers/net/virtio/virtio_user/vhost.h
@@ -136,6 +136,11 @@ struct vhost_user_msg {
/* The version of the protocol we support */
#define VHOST_USER_VERSION 0x1
+#define VHOST_USER_F_PROTOCOL_FEATURES 30
+#define VHOST_USER_MQ (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)
+
int vhost_user_sock(int vhostfd, uint64_t req, void *arg);
int vhost_user_setup(const char *path);
+int vhost_user_enable_queue_pair(int vhostfd, unsigned pair_idx, int enable);
+
#endif
diff --git a/drivers/net/virtio/virtio_user/vhost_user.c b/drivers/net/virtio/virtio_user/vhost_user.c
index 47bbf74..98d98b6 100644
--- a/drivers/net/virtio/virtio_user/vhost_user.c
+++ b/drivers/net/virtio/virtio_user/vhost_user.c
@@ -234,6 +234,7 @@ static const char * const vhost_msg_strings[] = {
[VHOST_USER_SET_VRING_ADDR] = "VHOST_USER_SET_VRING_ADDR",
[VHOST_USER_SET_VRING_KICK] = "VHOST_USER_SET_VRING_KICK",
[VHOST_USER_SET_MEM_TABLE] = "VHOST_USER_SET_MEM_TABLE",
+ [VHOST_USER_SET_VRING_ENABLE] = "VHOST_USER_SET_VRING_ENABLE",
NULL,
};
@@ -286,6 +287,7 @@ vhost_user_sock(int vhostfd, uint64_t req, void *arg)
case VHOST_USER_SET_VRING_NUM:
case VHOST_USER_SET_VRING_BASE:
+ case VHOST_USER_SET_VRING_ENABLE:
memcpy(&msg.payload.state, arg, sizeof(msg.payload.state));
msg.size = sizeof(m.payload.state);
break;
@@ -402,3 +404,23 @@ vhost_user_setup(const char *path)
return fd;
}
+
+int
+vhost_user_enable_queue_pair(int vhostfd, unsigned pair_idx, int enable)
+{
+ int i;
+
+ for (i = 0; i < 2; ++i) {
+ struct vhost_vring_state state = {
+ .index = pair_idx * 2 + i,
+ .num = enable,
+ };
+
+ if (vhost_user_sock(vhostfd,
+ VHOST_USER_SET_VRING_ENABLE, &state))
+ return -1;
+ }
+
+ return 0;
+
+}
--
2.1.4
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