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Linux kernel mirror (for testing)
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kernel
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linux
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