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 10 s32 page_pool_inflight(const struct page_pool *pool, bool strict); 11 12 int page_pool_list(struct page_pool *pool); 13 void page_pool_detached(struct page_pool *pool); 14 void page_pool_unlist(struct page_pool *pool); 15 16 static inline bool 17 page_pool_set_dma_addr_netmem(netmem_ref netmem, dma_addr_t addr) 18 { 19 if (PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA) { 20 netmem_set_dma_addr(netmem, addr >> PAGE_SHIFT); 21 22 /* We assume page alignment to shave off bottom bits, 23 * if this "compression" doesn't work we need to drop. 24 */ 25 return addr != (dma_addr_t)netmem_get_dma_addr(netmem) 26 << PAGE_SHIFT; 27 } 28 29 netmem_set_dma_addr(netmem, addr); 30 return false; 31 } 32 33 static inline bool page_pool_set_dma_addr(struct page *page, dma_addr_t addr) 34 { 35 return page_pool_set_dma_addr_netmem(page_to_netmem(page), addr); 36 } 37 38 #endif 39