net/xdp/xdp_umem.h

   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_ */