1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* XDP user-space packet buffer 3 * Copyright(c) 2018 Intel Corporation. 4 */ 5 6 #ifndef XDP_UMEM_H_ 7 #define XDP_UMEM_H_ 8 9 #include <net/xdp_sock.h> 10 11 static inline char *xdp_umem_get_data(struct xdp_umem *umem, u64 addr) 12 { 13 return umem->pages[addr >> PAGE_SHIFT].addr + (addr & (PAGE_SIZE - 1)); 14 } 15 16 static inline dma_addr_t xdp_umem_get_dma(struct xdp_umem *umem, u64 addr) 17 { 18 return umem->pages[addr >> PAGE_SHIFT].dma + (addr & (PAGE_SIZE - 1)); 19 } 20 21 int xdp_umem_assign_dev(struct xdp_umem *umem, struct net_device *dev, 22 u32 queue_id, u16 flags); 23 bool xdp_umem_validate_queues(struct xdp_umem *umem); 24 void xdp_get_umem(struct xdp_umem *umem); 25 void xdp_put_umem(struct xdp_umem *umem); 26 void xdp_add_sk_umem(struct xdp_umem *umem, struct xdp_sock *xs); 27 void xdp_del_sk_umem(struct xdp_umem *umem, struct xdp_sock *xs); 28 struct xdp_umem *xdp_umem_create(struct xdp_umem_reg *mr); 29 30 #endif /* XDP_UMEM_H_ */ 31