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devlink: Add support for dynamic table size

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Up until now the dpipe table's size was static and known at registration
time. The host table does not have constant size and it is resized in
dynamic manner. In order to support this behavior the size is changed
to be obtained dynamically via an op.

This patch also adjust the current dpipe table for the new API.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arkadi Sharshevsky
2017-08-24 08:40:02 +02:00
committed by David S. Miller
parent 23ca5ec3af
commit ffd3cdccf2
3 changed files with 19 additions and 13 deletions
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12
net/core/devlink.c
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@@ -1647,13 +1647,15 @@ static int devlink_dpipe_table_put(struct sk_buff *skb,
struct devlink_dpipe_table *table)
{
struct nlattr *table_attr;
u64 table_size;
table_size = table->table_ops->size_get(table->priv);
table_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE);
if (!table_attr)
return -EMSGSIZE;
if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table->size,
nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
DEVLINK_ATTR_PAD))
goto nla_put_failure;
if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
@@ -2718,20 +2720,21 @@ EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
* @table_name: table name
* @table_ops: table ops
* @priv: priv
* @size: size
* @counter_control_extern: external control for counters
*/
int devlink_dpipe_table_register(struct devlink *devlink,
const char *table_name,
struct devlink_dpipe_table_ops *table_ops,
void *priv, u64 size,
bool counter_control_extern)
void *priv, bool counter_control_extern)
{
struct devlink_dpipe_table *table;
if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name))
return -EEXIST;
if (WARN_ON(!table_ops->size_get))
return -EINVAL;
table = kzalloc(sizeof(*table), GFP_KERNEL);
if (!table)
return -ENOMEM;
@@ -2739,7 +2742,6 @@ int devlink_dpipe_table_register(struct devlink *devlink,
table->name = table_name;
table->table_ops = table_ops;
table->priv = priv;
table->size = size;
table->counter_control_extern = counter_control_extern;
mutex_lock(&devlink_mutex);