1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright(c) 2019 Intel Corporation. */
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.
11 #define XSK_NEXT_PG_CONTIG_SHIFT 0
12 #define XSK_NEXT_PG_CONTIG_MASK BIT_ULL(XSK_NEXT_PG_CONTIG_SHIFT)
14 /* Flags for the umem flags field.
16 * The NEED_WAKEUP flag is 1 due to the reuse of the flags field for public
17 * flags. See inlude/uapi/include/linux/if_xdp.h.
19 #define XDP_UMEM_USES_NEED_WAKEUP BIT(1)
21 struct xdp_ring_offset_v1 {
27 struct xdp_mmap_offsets_v1 {
28 struct xdp_ring_offset_v1 rx;
29 struct xdp_ring_offset_v1 tx;
30 struct xdp_ring_offset_v1 fr;
31 struct xdp_ring_offset_v1 cr;
34 /* Nodes are linked in the struct xdp_sock map_list field, and used to
35 * track which maps a certain socket reside in.
39 struct list_head node;
41 struct xdp_sock **map_entry;
44 static inline struct xdp_sock *xdp_sk(struct sock *sk)
46 return (struct xdp_sock *)sk;
49 bool xsk_is_setup_for_bpf_map(struct xdp_sock *xs);
50 void xsk_map_try_sock_delete(struct xsk_map *map, struct xdp_sock *xs,
51 struct xdp_sock **map_entry);
52 int xsk_map_inc(struct xsk_map *map);
53 void xsk_map_put(struct xsk_map *map);