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Date: Tue, 11 Dec 2018 14:16:41 +0530
From: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
To: davem@...emloft.net
Cc: michael.chan@...adcom.com, jiri@...lanox.com,
jakub.kicinski@...ronome.com, netdev@...r.kernel.org
Subject: [PATCH net-next v2 RFC 1/8] devlink: Add devlink_param for port register and unregister
Add functions to register and unregister for the driver supported
configuration parameters table per port.
Cc: Jiri Pirko <jiri@...lanox.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
---
include/net/devlink.h | 22 +++++++++
net/core/devlink.c | 128 ++++++++++++++++++++++++++++++++++++++++----------
2 files changed, 124 insertions(+), 26 deletions(-)
diff --git a/include/net/devlink.h b/include/net/devlink.h
index 67f4293..98b8a66 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -48,6 +48,7 @@ struct devlink_port_attrs {
struct devlink_port {
struct list_head list;
+ struct list_head param_list;
struct devlink *devlink;
unsigned index;
bool registered;
@@ -574,6 +575,12 @@ int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
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);
+int devlink_port_params_register(struct devlink_port *devlink_port,
+ const struct devlink_param *params,
+ size_t params_count);
+void devlink_port_params_unregister(struct devlink_port *devlink_port,
+ const struct devlink_param *params,
+ size_t params_count);
struct devlink_region *devlink_region_create(struct devlink *devlink,
const char *region_name,
u32 region_max_snapshots,
@@ -816,6 +823,21 @@ static inline bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
{
}
+static inline int
+devlink_port_params_register(struct devlink_port *devlink_port,
+ const struct devlink_param *params,
+ size_t params_count)
+{
+ return 0;
+}
+
+static inline void
+devlink_port_params_unregister(struct devlink_port *devlink_port,
+ const struct devlink_param *params,
+ size_t params_count)
+{
+}
+
static inline struct devlink_region *
devlink_region_create(struct devlink *devlink,
const char *region_name,
diff --git a/net/core/devlink.c b/net/core/devlink.c
index abb0da9..da7f6bd 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -3147,12 +3147,12 @@ static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
}
static int devlink_param_register_one(struct devlink *devlink,
+ struct list_head *param_list,
const struct devlink_param *param)
{
struct devlink_param_item *param_item;
- if (devlink_param_find_by_name(&devlink->param_list,
- param->name))
+ if (devlink_param_find_by_name(param_list, param->name))
return -EEXIST;
if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
@@ -3165,18 +3165,18 @@ static int devlink_param_register_one(struct devlink *devlink,
return -ENOMEM;
param_item->param = param;
- list_add_tail(¶m_item->list, &devlink->param_list);
+ list_add_tail(¶m_item->list, param_list);
devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
return 0;
}
static void devlink_param_unregister_one(struct devlink *devlink,
+ struct list_head *param_list,
const struct devlink_param *param)
{
struct devlink_param_item *param_item;
- param_item = devlink_param_find_by_name(&devlink->param_list,
- param->name);
+ param_item = devlink_param_find_by_name(param_list, param->name);
WARN_ON(!param_item);
devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_DEL);
list_del(¶m_item->list);
@@ -3954,6 +3954,7 @@ int devlink_port_register(struct devlink *devlink,
devlink_port->index = port_index;
devlink_port->registered = true;
list_add_tail(&devlink_port->list, &devlink->port_list);
+ INIT_LIST_HEAD(&devlink_port->param_list);
mutex_unlock(&devlink->lock);
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
return 0;
@@ -4471,6 +4472,16 @@ void devlink_resource_occ_get_unregister(struct devlink *devlink,
}
EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
+static int devlink_param_verify(const struct devlink_param *param)
+{
+ if (!param || !param->name || !param->supported_cmodes)
+ return -EINVAL;
+ if (param->generic)
+ return devlink_param_generic_verify(param);
+ else
+ return devlink_param_driver_verify(param);
+}
+
/**
* devlink_params_register - register configuration parameters
*
@@ -4490,20 +4501,12 @@ int devlink_params_register(struct devlink *devlink,
mutex_lock(&devlink->lock);
for (i = 0; i < params_count; i++, param++) {
- if (!param || !param->name || !param->supported_cmodes) {
- err = -EINVAL;
+ err = devlink_param_verify(param);
+ if (err)
goto rollback;
- }
- if (param->generic) {
- err = devlink_param_generic_verify(param);
- if (err)
- goto rollback;
- } else {
- err = devlink_param_driver_verify(param);
- if (err)
- goto rollback;
- }
- err = devlink_param_register_one(devlink, param);
+
+ err = devlink_param_register_one(devlink, &devlink->param_list,
+ param);
if (err)
goto rollback;
}
@@ -4515,13 +4518,28 @@ int devlink_params_register(struct devlink *devlink,
if (!i)
goto unlock;
for (param--; i > 0; i--, param--)
- devlink_param_unregister_one(devlink, param);
+ devlink_param_unregister_one(devlink, &devlink->param_list,
+ param);
unlock:
mutex_unlock(&devlink->lock);
return err;
}
EXPORT_SYMBOL_GPL(devlink_params_register);
+static void __devlink_params_unregister(struct devlink *devlink,
+ struct list_head *param_list,
+ const struct devlink_param *params,
+ size_t params_count)
+{
+ const struct devlink_param *param = params;
+ int i;
+
+ mutex_lock(&devlink->lock);
+ for (i = 0; i < params_count; i++, param++)
+ devlink_param_unregister_one(devlink, param_list, param);
+ mutex_unlock(&devlink->lock);
+}
+
/**
* devlink_params_unregister - unregister configuration parameters
* @devlink: devlink
@@ -4532,13 +4550,8 @@ void devlink_params_unregister(struct devlink *devlink,
const struct devlink_param *params,
size_t params_count)
{
- const struct devlink_param *param = params;
- int i;
-
- mutex_lock(&devlink->lock);
- for (i = 0; i < params_count; i++, param++)
- devlink_param_unregister_one(devlink, param);
- mutex_unlock(&devlink->lock);
+ return __devlink_params_unregister(devlink, &devlink->param_list,
+ params, params_count);
}
EXPORT_SYMBOL_GPL(devlink_params_unregister);
@@ -4657,6 +4670,69 @@ void devlink_param_value_str_fill(union devlink_param_value *dst_val,
EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
/**
+ * devlink_port_params_register - register port configuration parameters
+ *
+ * @devlink_port: devlink port
+ * @params: configuration parameters array
+ * @params_count: number of parameters provided
+ *
+ * Register the configuration parameters supported by the port.
+ */
+int devlink_port_params_register(struct devlink_port *devlink_port,
+ const struct devlink_param *params,
+ size_t params_count)
+{
+ struct devlink *devlink = devlink_port->devlink;
+ const struct devlink_param *param = params;
+ int i, err;
+
+ mutex_lock(&devlink->lock);
+ for (i = 0; i < params_count; i++) {
+ err = devlink_param_verify(param);
+ if (err)
+ goto rollback;
+
+ err = devlink_param_register_one(devlink,
+ &devlink_port->param_list,
+ param);
+ if (err)
+ goto rollback;
+ }
+
+ mutex_unlock(&devlink->lock);
+ return 0;
+
+rollback:
+ if (!i)
+ goto unlock;
+ for (param--; i > 0; i--, param--)
+ devlink_param_unregister_one(devlink, &devlink_port->param_list,
+ param);
+unlock:
+ mutex_unlock(&devlink->lock);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_port_params_register);
+
+/**
+ * devlink_port_params_unregister - unregister port configuration
+ * parameters
+ *
+ * @devlink_port: devlink port
+ * @params: configuration parameters array
+ * @params_count: number of parameters provided
+ */
+void devlink_port_params_unregister(struct devlink_port *devlink_port,
+ const struct devlink_param *params,
+ size_t params_count)
+{
+ return __devlink_params_unregister(devlink_port->devlink,
+ &devlink_port->param_list,
+ params, params_count);
+}
+EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
+
+/**
* devlink_region_create - create a new address region
*
* @devlink: devlink
--
1.8.3.1
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