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Date: Fri, 26 May 2023 12:28:27 +0200
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: kuba@...nel.org,
pabeni@...hat.com,
davem@...emloft.net,
edumazet@...gle.com,
leon@...nel.org,
saeedm@...dia.com,
moshe@...dia.com,
jesse.brandeburg@...el.com,
anthony.l.nguyen@...el.com,
tariqt@...dia.com,
idosch@...dia.com,
petrm@...dia.com,
simon.horman@...igine.com,
ecree.xilinx@...il.com,
habetsm.xilinx@...il.com,
michal.wilczynski@...el.com,
jacob.e.keller@...el.com
Subject: [patch net-next v2 01/15] devlink: introduce port ops placeholder
From: Jiri Pirko <jiri@...dia.com>
In devlink, some of the objects have separate ops registered alongside
with the object itself. Port however have ops in devlink_ops structure.
For drivers what register multiple kinds of ports with different ops
this is not convenient. Introduce devlink_port_ops and a set
of functions that allow drivers to pass ops pointer during
port registration.
Signed-off-by: Jiri Pirko <jiri@...dia.com>
---
v1->v2:
- fixed function names in kdoc comments
- use dummy empty ops in case ops is null
---
include/net/devlink.h | 41 +++++++++++++++++++++++++++++++++++------
net/devlink/leftover.c | 30 +++++++++++++++++++-----------
2 files changed, 54 insertions(+), 17 deletions(-)
diff --git a/include/net/devlink.h b/include/net/devlink.h
index 1bd56c8d6f3c..850148b98f70 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -123,6 +123,7 @@ struct devlink_port {
struct list_head list;
struct list_head region_list;
struct devlink *devlink;
+ const struct devlink_port_ops *ops;
unsigned int index;
spinlock_t type_lock; /* Protects type and type_eth/ib
* structures consistency.
@@ -1649,15 +1650,43 @@ void devl_unregister(struct devlink *devlink);
void devlink_register(struct devlink *devlink);
void devlink_unregister(struct devlink *devlink);
void devlink_free(struct devlink *devlink);
+
+/**
+ * struct devlink_port_ops - Port operations
+ */
+struct devlink_port_ops {
+};
+
void devlink_port_init(struct devlink *devlink,
struct devlink_port *devlink_port);
void devlink_port_fini(struct devlink_port *devlink_port);
-int devl_port_register(struct devlink *devlink,
- struct devlink_port *devlink_port,
- unsigned int port_index);
-int devlink_port_register(struct devlink *devlink,
- struct devlink_port *devlink_port,
- unsigned int port_index);
+
+int devl_port_register_with_ops(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index,
+ const struct devlink_port_ops *ops);
+
+static inline int devl_port_register(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index)
+{
+ return devl_port_register_with_ops(devlink, devlink_port,
+ port_index, NULL);
+}
+
+int devlink_port_register_with_ops(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index,
+ const struct devlink_port_ops *ops);
+
+static inline int devlink_port_register(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index)
+{
+ return devlink_port_register_with_ops(devlink, devlink_port,
+ port_index, NULL);
+}
+
void devl_port_unregister(struct devlink_port *devlink_port);
void devlink_port_unregister(struct devlink_port *devlink_port);
void devlink_port_type_eth_set(struct devlink_port *devlink_port);
diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c
index 0410137a4a31..14bb82403c2d 100644
--- a/net/devlink/leftover.c
+++ b/net/devlink/leftover.c
@@ -6793,12 +6793,15 @@ void devlink_port_fini(struct devlink_port *devlink_port)
}
EXPORT_SYMBOL_GPL(devlink_port_fini);
+static const struct devlink_port_ops devlink_port_dummy_ops = {};
+
/**
- * devl_port_register() - Register devlink port
+ * devl_port_register_with_ops() - Register devlink port
*
* @devlink: devlink
* @devlink_port: devlink port
* @port_index: driver-specific numerical identifier of the port
+ * @ops: port ops
*
* Register devlink port with provided port index. User can use
* any indexing, even hw-related one. devlink_port structure
@@ -6806,9 +6809,10 @@ EXPORT_SYMBOL_GPL(devlink_port_fini);
* Note that the caller should take care of zeroing the devlink_port
* structure.
*/
-int devl_port_register(struct devlink *devlink,
- struct devlink_port *devlink_port,
- unsigned int port_index)
+int devl_port_register_with_ops(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index,
+ const struct devlink_port_ops *ops)
{
int err;
@@ -6819,6 +6823,7 @@ int devl_port_register(struct devlink *devlink,
devlink_port_init(devlink, devlink_port);
devlink_port->registered = true;
devlink_port->index = port_index;
+ devlink_port->ops = ops ? ops : &devlink_port_dummy_ops;
spin_lock_init(&devlink_port->type_lock);
INIT_LIST_HEAD(&devlink_port->reporter_list);
err = xa_insert(&devlink->ports, port_index, devlink_port, GFP_KERNEL);
@@ -6830,14 +6835,15 @@ int devl_port_register(struct devlink *devlink,
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
return 0;
}
-EXPORT_SYMBOL_GPL(devl_port_register);
+EXPORT_SYMBOL_GPL(devl_port_register_with_ops);
/**
- * devlink_port_register - Register devlink port
+ * devlink_port_register_with_ops - Register devlink port
*
* @devlink: devlink
* @devlink_port: devlink port
* @port_index: driver-specific numerical identifier of the port
+ * @ops: port ops
*
* Register devlink port with provided port index. User can use
* any indexing, even hw-related one. devlink_port structure
@@ -6847,18 +6853,20 @@ EXPORT_SYMBOL_GPL(devl_port_register);
*
* Context: Takes and release devlink->lock <mutex>.
*/
-int devlink_port_register(struct devlink *devlink,
- struct devlink_port *devlink_port,
- unsigned int port_index)
+int devlink_port_register_with_ops(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index,
+ const struct devlink_port_ops *ops)
{
int err;
devl_lock(devlink);
- err = devl_port_register(devlink, devlink_port, port_index);
+ err = devl_port_register_with_ops(devlink, devlink_port,
+ port_index, ops);
devl_unlock(devlink);
return err;
}
-EXPORT_SYMBOL_GPL(devlink_port_register);
+EXPORT_SYMBOL_GPL(devlink_port_register_with_ops);
/**
* devl_port_unregister() - Unregister devlink port
--
2.39.2
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