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
14 struct xdp_ring_offset_v1 {
15 __u64 producer;
16 __u64 consumer;
17 __u64 desc;
18 };
19
20 struct 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
31 struct xsk_map_node {
32 struct list_head node;
33 struct xsk_map *map;
34 struct xdp_sock __rcu **map_entry;
35 };
36
37 static inline struct xdp_sock *xdp_sk(struct sock *sk)
38 {
39 return (struct xdp_sock *)sk;
40 }
41
42 void xsk_map_try_sock_delete(struct xsk_map *map, struct xdp_sock *xs,
43 struct xdp_sock __rcu **map_entry);
44 void xsk_clear_pool_at_qid(struct net_device *dev, u16 queue_id);
45 int xsk_reg_pool_at_qid(struct net_device *dev, struct xsk_buff_pool *pool,
46 u16 queue_id);
47
48 #endif /* XSK_H_ */
49
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