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Date: Tue, 22 Oct 2019 20:43:04 +0300
From: Yuval Avnery <yuvalav@...lanox.com>
To: netdev@...r.kernel.org
Cc: jiri@...lanox.com, saeedm@...lanox.com, leon@...nel.org,
davem@...emloft.net, jakub.kicinski@...ronome.com,
shuah@...nel.org, Yuval Avnery <yuvalav@...lanox.com>
Subject: [PATCH net-next 3/9] devlink: Add port with vdev register support
A vdev may represent a network device, so it may be linked to
a devlink port.
Added devlink_port_register_with_vdev to allow vdev-port linkage.
Example:
$ devlink vdev show pci/0000:03:00.0/1 -jp
{
"vdev": {
"pci/0000:03:00.0/1": {
"flavour": "pcivf",
"pf": 0,
"vf": 0,
"port_index": 1
}
}
}
$ devlink vdev show pci/0000:03:00.0/1
pci/0000:03:00.0/1: flavour pcivf pf 0 vf 0 port_index 1
$ devlink port show pci/0000:03:00.0/1
pci/0000:03:00.0/1: type eth netdev ens2f0_0 flavour pcivf pfnum 0 vfnum 0 vdev_index 1
Signed-off-by: Yuval Avnery <yuvalav@...lanox.com>
Acked-by: Jiri Pirko <jiri@...lanox.com>
---
include/net/devlink.h | 5 ++++
net/core/devlink.c | 53 +++++++++++++++++++++++++++++++++++++++----
2 files changed, 54 insertions(+), 4 deletions(-)
diff --git a/include/net/devlink.h b/include/net/devlink.h
index ab7e316ea758..138d33275963 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -90,6 +90,7 @@ struct devlink_port {
void *type_dev;
struct devlink_port_attrs attrs;
struct delayed_work type_warn_dw;
+ struct devlink_vdev *devlink_vdev; /* linked vdev */
};
struct devlink_vdev_pci_pf_attrs {
@@ -806,6 +807,10 @@ void devlink_free(struct devlink *devlink);
int devlink_port_register(struct devlink *devlink,
struct devlink_port *devlink_port,
unsigned int port_index);
+int devlink_port_register_with_vdev(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index,
+ struct devlink_vdev *devlink_vdev);
void devlink_port_unregister(struct devlink_port *devlink_port);
void devlink_port_type_eth_set(struct devlink_port *devlink_port,
struct net_device *netdev);
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 0a201a373da9..2fffbd37e710 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -37,6 +37,7 @@ struct devlink_vdev {
unsigned int index;
const struct devlink_vdev_ops *ops;
struct devlink_vdev_attrs attrs;
+ struct devlink_port *devlink_port; /* linked port */
void *priv;
};
@@ -664,6 +665,10 @@ static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
goto nla_put_failure_type_locked;
}
spin_unlock_bh(&devlink_port->type_lock);
+ if (devlink_port->devlink_vdev)
+ if (nla_put_u32(msg, DEVLINK_ATTR_VDEV_INDEX,
+ devlink_port->devlink_vdev->index))
+ goto nla_put_failure;
if (devlink_nl_port_attrs_put(msg, devlink_port))
goto nla_put_failure;
@@ -738,6 +743,11 @@ static int devlink_nl_vdev_fill(struct sk_buff *msg, struct devlink *devlink,
break;
}
+ if (devlink_vdev->devlink_port)
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
+ devlink_vdev->devlink_port->index))
+ goto nla_put_failure;
+
genlmsg_end(msg, hdr);
return 0;
@@ -6582,11 +6592,12 @@ static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
}
/**
- * devlink_port_register - Register devlink port
+ * devlink_port_register_with_vdev - Register devlink port
*
* @devlink: devlink
* @devlink_port: devlink port
* @port_index: driver-specific numerical identifier of the port
+ * @devlink_vdev: vdev to link with the port
*
* Register devlink port with provided port index. User can use
* any indexing, even hw-related one. devlink_port structure
@@ -6594,9 +6605,10 @@ static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
* Note that the caller should take care of zeroing the devlink_port
* structure.
*/
-int devlink_port_register(struct devlink *devlink,
- struct devlink_port *devlink_port,
- unsigned int port_index)
+int devlink_port_register_with_vdev(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index,
+ struct devlink_vdev *devlink_vdev)
{
mutex_lock(&devlink->lock);
if (devlink_port_index_exists(devlink, port_index)) {
@@ -6606,15 +6618,42 @@ int devlink_port_register(struct devlink *devlink,
devlink_port->devlink = devlink;
devlink_port->index = port_index;
devlink_port->registered = true;
+ devlink_port->devlink_vdev = devlink_vdev;
spin_lock_init(&devlink_port->type_lock);
list_add_tail(&devlink_port->list, &devlink->port_list);
INIT_LIST_HEAD(&devlink_port->param_list);
mutex_unlock(&devlink->lock);
INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
devlink_port_type_warn_schedule(devlink_port);
+ if (devlink_vdev) {
+ devlink_vdev->devlink_port = devlink_port;
+ devlink_vdev_notify(devlink_vdev, DEVLINK_CMD_VDEV_NEW);
+ }
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
return 0;
}
+EXPORT_SYMBOL_GPL(devlink_port_register_with_vdev);
+
+/**
+ * devlink_port_register - Register devlink port
+ *
+ * @devlink: devlink
+ * @devlink_port: devlink port
+ * @port_index: driver-specific numerical identifier of the port
+ *
+ * Register devlink port with provided port index. User can use
+ * any indexing, even hw-related one. devlink_port structure
+ * is convenient to be embedded inside user driver private structure.
+ * Note that the caller should take care of zeroing the devlink_port
+ * structure.
+ */
+int devlink_port_register(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index)
+{
+ return devlink_port_register_with_vdev(devlink, devlink_port,
+ port_index, NULL);
+}
EXPORT_SYMBOL_GPL(devlink_port_register);
/**
@@ -6624,9 +6663,14 @@ EXPORT_SYMBOL_GPL(devlink_port_register);
*/
void devlink_port_unregister(struct devlink_port *devlink_port)
{
+ struct devlink_vdev *devlink_vdev = devlink_port->devlink_vdev;
struct devlink *devlink = devlink_port->devlink;
devlink_port_type_warn_cancel(devlink_port);
+ if (devlink_vdev) {
+ devlink_vdev->devlink_port = NULL;
+ devlink_vdev_notify(devlink_vdev, DEVLINK_CMD_VDEV_NEW);
+ }
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
mutex_lock(&devlink->lock);
list_del(&devlink_port->list);
@@ -6926,6 +6970,7 @@ void devlink_vdev_destroy(struct devlink_vdev *devlink_vdev)
{
struct devlink *devlink = devlink_vdev->devlink;
+ WARN_ON(devlink_vdev->devlink_port);
devlink_vdev_notify(devlink_vdev, DEVLINK_CMD_VDEV_DEL);
mutex_lock(&devlink->lock);
list_del(&devlink_vdev->list);
--
2.17.1
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