devlink: Add support for driverinit get value for devlink_port

Add support for "driverinit" configuration mode value for devlink_port
configuration parameters. Add devlink_port_param_driverinit_value_get()
function to help the driver get the value from devlink_port.

Also, move the common code to __devlink_param_driverinit_value_get()
to be used by both device and port params.

v7->v8:
-Add the missing devlink_port_param_driverinit_value_get() declaration.
-Also, order devlink_port_param_driverinit_value_get() after
devlink_param_driverinit_value_get/set() calls

Cc: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/devlink.h b/include/net/devlink.h
index 7fc0748..3943072 100644 (file)
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -578,6 +578,10 @@ int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
                                       union devlink_param_value *init_val);
 int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
                                       union devlink_param_value init_val);
+int
+devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
+                                       u32 param_id,
+                                       union devlink_param_value *init_val);
 void devlink_param_value_changed(struct devlink *devlink, u32 param_id);
 void devlink_param_value_str_fill(union devlink_param_value *dst_val,
                                  const char *src);
@@ -827,6 +831,14 @@ devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
        return -EOPNOTSUPP;
 }
 
+static inline int
+devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
+                                       u32 param_id,
+                                       union devlink_param_value *init_val)
+{
+       return -EOPNOTSUPP;
+}
+
 static inline void
 devlink_param_value_changed(struct devlink *devlink, u32 param_id)
 {

diff --git a/net/core/devlink.c b/net/core/devlink.c
index 113ad9f..fdfdb9b 100644 (file)
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -4714,26 +4714,13 @@ void devlink_port_params_unregister(struct devlink_port *devlink_port,
 }
 EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
 
-/**
- *     devlink_param_driverinit_value_get - get configuration parameter
- *                                          value for driver initializing
- *
- *     @devlink: devlink
- *     @param_id: parameter ID
- *     @init_val: value of parameter in driverinit configuration mode
- *
- *     This function should be used by the driver to get driverinit
- *     configuration for initialization after reload command.
- */
-int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
-                                      union devlink_param_value *init_val)
+static int
+__devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
+                                    union devlink_param_value *init_val)
 {
        struct devlink_param_item *param_item;
 
-       if (!devlink->ops || !devlink->ops->reload)
-               return -EOPNOTSUPP;
-
-       param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
+       param_item = devlink_param_find_by_id(param_list, param_id);
        if (!param_item)
                return -EINVAL;
 
@@ -4749,6 +4736,27 @@ int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
 
        return 0;
 }
+
+/**
+ *     devlink_param_driverinit_value_get - get configuration parameter
+ *                                          value for driver initializing
+ *
+ *     @devlink: devlink
+ *     @param_id: parameter ID
+ *     @init_val: value of parameter in driverinit configuration mode
+ *
+ *     This function should be used by the driver to get driverinit
+ *     configuration for initialization after reload command.
+ */
+int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
+                                      union devlink_param_value *init_val)
+{
+       if (!devlink->ops || !devlink->ops->reload)
+               return -EOPNOTSUPP;
+
+       return __devlink_param_driverinit_value_get(&devlink->param_list,
+                                                   param_id, init_val);
+}
 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
 
 /**
@@ -4788,6 +4796,31 @@ int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
 
 /**
+ *     devlink_port_param_driverinit_value_get - get configuration parameter
+ *                                             value for driver initializing
+ *
+ *     @devlink_port: devlink_port
+ *     @param_id: parameter ID
+ *     @init_val: value of parameter in driverinit configuration mode
+ *
+ *     This function should be used by the driver to get driverinit
+ *     configuration for initialization after reload command.
+ */
+int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
+                                           u32 param_id,
+                                           union devlink_param_value *init_val)
+{
+       struct devlink *devlink = devlink_port->devlink;
+
+       if (!devlink->ops || !devlink->ops->reload)
+               return -EOPNOTSUPP;
+
+       return __devlink_param_driverinit_value_get(&devlink_port->param_list,
+                                                   param_id, init_val);
+}
+EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
+
+/**
  *     devlink_param_value_changed - notify devlink on a parameter's value
  *                                   change. Should be called by the driver
  *                                   right after the change.