diff options
Diffstat (limited to 'net/core/devlink.c')
-rw-r--r-- | net/core/devlink.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/net/core/devlink.c b/net/core/devlink.c index 470f3dbfecfe..cac856136ac6 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -326,6 +326,28 @@ devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb, pool_type, p_tc_index); } +struct devlink_region { + struct devlink *devlink; + struct list_head list; + const char *name; + struct list_head snapshot_list; + u32 max_snapshots; + u32 cur_snapshots; + u64 size; +}; + +static struct devlink_region * +devlink_region_get_by_name(struct devlink *devlink, const char *region_name) +{ + struct devlink_region *region; + + list_for_each_entry(region, &devlink->region_list, list) + if (!strcmp(region->name, region_name)) + return region; + + return NULL; +} + #define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0) #define DEVLINK_NL_FLAG_NEED_PORT BIT(1) #define DEVLINK_NL_FLAG_NEED_SB BIT(2) @@ -3358,6 +3380,7 @@ struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size) INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list); INIT_LIST_HEAD(&devlink->resource_list); INIT_LIST_HEAD(&devlink->param_list); + INIT_LIST_HEAD(&devlink->region_list); mutex_init(&devlink->lock); return devlink; } @@ -4109,6 +4132,67 @@ void devlink_param_value_changed(struct devlink *devlink, u32 param_id) } EXPORT_SYMBOL_GPL(devlink_param_value_changed); +/** + * devlink_region_create - create a new address region + * + * @devlink: devlink + * @region_name: region name + * @region_max_snapshots: Maximum supported number of snapshots for region + * @region_size: size of region + */ +struct devlink_region *devlink_region_create(struct devlink *devlink, + const char *region_name, + u32 region_max_snapshots, + u64 region_size) +{ + struct devlink_region *region; + int err = 0; + + mutex_lock(&devlink->lock); + + if (devlink_region_get_by_name(devlink, region_name)) { + err = -EEXIST; + goto unlock; + } + + region = kzalloc(sizeof(*region), GFP_KERNEL); + if (!region) { + err = -ENOMEM; + goto unlock; + } + + region->devlink = devlink; + region->max_snapshots = region_max_snapshots; + region->name = region_name; + region->size = region_size; + INIT_LIST_HEAD(®ion->snapshot_list); + list_add_tail(®ion->list, &devlink->region_list); + + mutex_unlock(&devlink->lock); + return region; + +unlock: + mutex_unlock(&devlink->lock); + return ERR_PTR(err); +} +EXPORT_SYMBOL_GPL(devlink_region_create); + +/** + * devlink_region_destroy - destroy address region + * + * @region: devlink region to destroy + */ +void devlink_region_destroy(struct devlink_region *region) +{ + struct devlink *devlink = region->devlink; + + mutex_lock(&devlink->lock); + list_del(®ion->list); + mutex_unlock(&devlink->lock); + kfree(region); +} +EXPORT_SYMBOL_GPL(devlink_region_destroy); + static int __init devlink_module_init(void) { return genl_register_family(&devlink_nl_family); |