1/* SPDX-License-Identifier: GPL-2.0 */
2/* Copyright(c) 2019 Intel Corporation. */
3
4#ifndef XSK_H_
5#define XSK_H_
6
7/* Masks for xdp_umem_page flags.
8 * The low 12-bits of the addr will be 0 since this is the page address, so we
9 * can use them for flags.
10 */
11#define XSK_NEXT_PG_CONTIG_SHIFT 0
12#define XSK_NEXT_PG_CONTIG_MASK BIT_ULL(XSK_NEXT_PG_CONTIG_SHIFT)
13
14struct xdp_ring_offset_v1 {
15	__u64 producer;
16	__u64 consumer;
17	__u64 desc;
18};
19
20struct xdp_mmap_offsets_v1 {
21	struct xdp_ring_offset_v1 rx;
22	struct xdp_ring_offset_v1 tx;
23	struct xdp_ring_offset_v1 fr;
24	struct xdp_ring_offset_v1 cr;
25};
26
27/* Nodes are linked in the struct xdp_sock map_list field, and used to
28 * track which maps a certain socket reside in.
29 */
30
31struct xsk_map_node {
32	struct list_head node;
33	struct xsk_map *map;
34	struct xdp_sock __rcu **map_entry;
35};
36
37static inline struct xdp_sock *xdp_sk(struct sock *sk)
38{
39	return (struct xdp_sock *)sk;
40}
41
42void xsk_map_try_sock_delete(struct xsk_map *map, struct xdp_sock *xs,
43			     struct xdp_sock __rcu **map_entry);
44void xsk_clear_pool_at_qid(struct net_device *dev, u16 queue_id);
45int xsk_reg_pool_at_qid(struct net_device *dev, struct xsk_buff_pool *pool,
46			u16 queue_id);
47
48#endif /* XSK_H_ */
49