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* [dpdk-dev] [PATCH] vhost: add config change slave msg support
@ 2019-12-02 14:57 Li Feng
  2019-12-04  5:13 ` [dpdk-dev] [PATCH v2] " Li Feng
                   ` (3 more replies)
  0 siblings, 4 replies; 17+ messages in thread
From: Li Feng @ 2019-12-02 14:57 UTC (permalink / raw)
  To: Maxime Coquelin, Tiwei Bie, Zhihong Wang; +Cc: dev, Li Feng

This msg is used to notify qemu that should get the config of backend.

For example, vhost-user-blk uses this msg to notify guest os the
compacity of backend has changed.

Signed-off-by: Li Feng <fengli@smartx.com>
---
 lib/librte_vhost/vhost_user.c | 31 +++++++++++++++++++++++++++++++
 lib/librte_vhost/vhost_user.h |  2 ++
 2 files changed, 33 insertions(+)

diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 0cfb8b792..4126fa32d 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -2840,6 +2840,37 @@ vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm)
 	return 0;
 }
 
+static int
+vhost_user_slave_config_change(struct virtio_net *dev)
+{
+	int ret;
+	struct VhostUserMsg msg = {
+		.request.slave = VHOST_USER_SLAVE_CONFIG_CHANGE_MSG,
+		.flags = VHOST_USER_VERSION,
+		.size = 0,
+	};
+
+	ret = send_vhost_message(dev->slave_req_fd, &msg);
+	if (ret < 0) {
+		RTE_LOG(ERR, VHOST_CONFIG,
+				"Failed to send config change  (%d)\n",
+				ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+int
+rte_vhost_user_slave_config_change(int vid)
+{
+	struct virtio_net *dev;
+	dev = get_device(vid);
+	if (!dev)
+		return -ENODEV;
+	return vhost_user_slave_config_change(dev);
+}
+
 static int vhost_user_slave_set_vring_host_notifier(struct virtio_net *dev,
 						    int index, int fd,
 						    uint64_t offset,
diff --git a/lib/librte_vhost/vhost_user.h b/lib/librte_vhost/vhost_user.h
index 6563f7315..5c1bb2138 100644
--- a/lib/librte_vhost/vhost_user.h
+++ b/lib/librte_vhost/vhost_user.h
@@ -62,6 +62,7 @@ typedef enum VhostUserRequest {
 typedef enum VhostUserSlaveRequest {
 	VHOST_USER_SLAVE_NONE = 0,
 	VHOST_USER_SLAVE_IOTLB_MSG = 1,
+	VHOST_USER_SLAVE_CONFIG_CHANGE_MSG = 2,
 	VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG = 3,
 	VHOST_USER_SLAVE_MAX
 } VhostUserSlaveRequest;
@@ -158,6 +159,7 @@ typedef struct VhostUserMsg {
 /* vhost_user.c */
 int vhost_user_msg_handler(int vid, int fd);
 int vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm);
+int rte_vhost_user_slave_config_change(int vid);
 
 /* socket.c */
 int read_fd_message(int sockfd, char *buf, int buflen, int *fds, int max_fds,
-- 
2.11.0


-- 
The SmartX email address is only for business purpose. Any sent message 
that is not related to the business is not authorized or permitted by 
SmartX.
本邮箱为北京志凌海纳科技有限公司(SmartX)工作邮箱. 如本邮箱发出的邮件与工作无关,该邮件未得到本公司任何的明示或默示的授权.



^ permalink raw reply	[flat|nested] 17+ messages in thread
* [dpdk-dev] [PATCH v2] vhost: add config change slave msg support
@ 2019-12-04  5:01 " Li Feng
  0 siblings, 0 replies; 17+ messages in thread
From: Li Feng @ 2019-12-04  5:01 UTC (permalink / raw)
  To: Maxime Coquelin, Tiwei Bie, Zhihong Wang; +Cc: dev, Li Feng

This msg is used to notify qemu that should get the config of backend.

For example, vhost-user-blk uses this msg to notify guest os the
compacity of backend has changed.

Signed-off-by: Li Feng <fengli@smartx.com>
---
v2:
* Fix a little log typo.

 lib/librte_vhost/vhost_user.c | 31 +++++++++++++++++++++++++++++++
 lib/librte_vhost/vhost_user.h |  2 ++
 2 files changed, 33 insertions(+)

diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 0cfb8b792..10f2e47d5 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -2840,6 +2840,37 @@ vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm)
 	return 0;
 }
 
+static int
+vhost_user_slave_config_change(struct virtio_net *dev)
+{
+	int ret;
+	struct VhostUserMsg msg = {
+		.request.slave = VHOST_USER_SLAVE_CONFIG_CHANGE_MSG,
+		.flags = VHOST_USER_VERSION,
+		.size = 0,
+	};
+
+	ret = send_vhost_message(dev->slave_req_fd, &msg);
+	if (ret < 0) {
+		RTE_LOG(ERR, VHOST_CONFIG,
+				"Failed to send config change (%d)\n",
+				ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+int
+rte_vhost_user_slave_config_change(int vid)
+{
+	struct virtio_net *dev;
+	dev = get_device(vid);
+	if (!dev)
+		return -ENODEV;
+	return vhost_user_slave_config_change(dev);
+}
+
 static int vhost_user_slave_set_vring_host_notifier(struct virtio_net *dev,
 						    int index, int fd,
 						    uint64_t offset,
diff --git a/lib/librte_vhost/vhost_user.h b/lib/librte_vhost/vhost_user.h
index 6563f7315..5c1bb2138 100644
--- a/lib/librte_vhost/vhost_user.h
+++ b/lib/librte_vhost/vhost_user.h
@@ -62,6 +62,7 @@ typedef enum VhostUserRequest {
 typedef enum VhostUserSlaveRequest {
 	VHOST_USER_SLAVE_NONE = 0,
 	VHOST_USER_SLAVE_IOTLB_MSG = 1,
+	VHOST_USER_SLAVE_CONFIG_CHANGE_MSG = 2,
 	VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG = 3,
 	VHOST_USER_SLAVE_MAX
 } VhostUserSlaveRequest;
@@ -158,6 +159,7 @@ typedef struct VhostUserMsg {
 /* vhost_user.c */
 int vhost_user_msg_handler(int vid, int fd);
 int vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm);
+int rte_vhost_user_slave_config_change(int vid);
 
 /* socket.c */
 int read_fd_message(int sockfd, char *buf, int buflen, int *fds, int max_fds,
-- 
2.11.0


-- 
The SmartX email address is only for business purpose. Any sent message 
that is not related to the business is not authorized or permitted by 
SmartX.
本邮箱为北京志凌海纳科技有限公司(SmartX)工作邮箱. 如本邮箱发出的邮件与工作无关,该邮件未得到本公司任何的明示或默示的授权.



^ permalink raw reply	[flat|nested] 17+ messages in thread

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Thread overview: 17+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-12-02 14:57 [dpdk-dev] [PATCH] vhost: add config change slave msg support Li Feng
2019-12-04  5:13 ` [dpdk-dev] [PATCH v2] " Li Feng
2019-12-04  9:30   ` Tiwei Bie
2019-12-04  9:43     ` Li Feng
2019-12-05  2:07       ` Tiwei Bie
2019-12-05  4:01         ` Li Feng
2019-12-05  4:57           ` Tiwei Bie
2019-12-05  5:38 ` [dpdk-dev] [PATCH v3] " Li Feng
2019-12-11  2:58   ` Li Feng
2019-12-16  5:06   ` Tiwei Bie
2019-12-18  6:34     ` Li Feng
2019-12-19  8:54 ` [dpdk-dev] [PATCH v4] " Li Feng
2019-12-20  8:04   ` Tiwei Bie
2019-12-20  8:22 ` [dpdk-dev] [PATCH v5] " Li Feng
2020-01-14 14:57   ` Maxime Coquelin
2020-01-15 11:18   ` Maxime Coquelin
2019-12-04  5:01 [dpdk-dev] [PATCH v2] " Li Feng

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