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// SPDX-License-Identifier: GPL-2.0
#include <linux/mutex.h>
#include <linux/xarray.h>
#include <net/page_pool/types.h>
#include "page_pool_priv.h"
static DEFINE_XARRAY_FLAGS(page_pools, XA_FLAGS_ALLOC1);
static DEFINE_MUTEX(page_pools_lock);
int page_pool_list(struct page_pool *pool)
{
static u32 id_alloc_next;
int err;
mutex_lock(&page_pools_lock);
err = xa_alloc_cyclic(&page_pools, &pool->user.id, pool, xa_limit_32b,
&id_alloc_next, GFP_KERNEL);
if (err < 0)
goto err_unlock;
mutex_unlock(&page_pools_lock);
return 0;
err_unlock:
mutex_unlock(&page_pools_lock);
return err;
}
void page_pool_unlist(struct page_pool *pool)
{
mutex_lock(&page_pools_lock);
xa_erase(&page_pools, pool->user.id);
mutex_unlock(&page_pools_lock);
}
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