LXR linux/net/xdp/xdp

   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
  11static 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
  16static 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
  21int xdp_umem_assign_dev(struct xdp_umem *umem, struct net_device *dev,
  22                        u32 queue_id, u16 flags);
  23bool xdp_umem_validate_queues(struct xdp_umem *umem);
  24void xdp_get_umem(struct xdp_umem *umem);
  25void xdp_put_umem(struct xdp_umem *umem);
  26void xdp_add_sk_umem(struct xdp_umem *umem, struct xdp_sock *xs);
  27void xdp_del_sk_umem(struct xdp_umem *umem, struct xdp_sock *xs);
  28struct xdp_umem *xdp_umem_create(struct xdp_umem_reg *mr);
  29
  30#endif /* XDP_UMEM_H_ */
  31