1/* SPDX-License-Identifier: GPL-2.0 */
 2
 3#ifndef __PAGE_POOL_PRIV_H
 4#define __PAGE_POOL_PRIV_H
 5
 6#include <net/page_pool/helpers.h>
 7
 8#include "netmem_priv.h"
 9
10extern struct mutex page_pools_lock;
11
12s32 page_pool_inflight(const struct page_pool *pool, bool strict);
13
14int page_pool_list(struct page_pool *pool);
15void page_pool_detached(struct page_pool *pool);
16void page_pool_unlist(struct page_pool *pool);
17
18static inline bool
19page_pool_set_dma_addr_netmem(netmem_ref netmem, dma_addr_t addr)
20{
21	if (PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA) {
22		netmem_set_dma_addr(netmem, addr >> PAGE_SHIFT);
23
24		/* We assume page alignment to shave off bottom bits,
25		 * if this "compression" doesn't work we need to drop.
26		 */
27		return addr != (dma_addr_t)netmem_get_dma_addr(netmem)
28				       << PAGE_SHIFT;
29	}
30
31	netmem_set_dma_addr(netmem, addr);
32	return false;
33}
34
35static inline bool page_pool_set_dma_addr(struct page *page, dma_addr_t addr)
36{
37	return page_pool_set_dma_addr_netmem(page_to_netmem(page), addr);
38}
39
40#if defined(CONFIG_PAGE_POOL)
41void page_pool_set_pp_info(struct page_pool *pool, netmem_ref netmem);
42void page_pool_clear_pp_info(netmem_ref netmem);
43int page_pool_check_memory_provider(struct net_device *dev,
44				    struct netdev_rx_queue *rxq);
45#else
46static inline void page_pool_set_pp_info(struct page_pool *pool,
47					 netmem_ref netmem)
48{
49}
50static inline void page_pool_clear_pp_info(netmem_ref netmem)
51{
52}
53static inline int page_pool_check_memory_provider(struct net_device *dev,
54						  struct netdev_rx_queue *rxq)
55{
56	return 0;
57}
58#endif
59
60#endif