/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright(c) 2019 Intel Corporation. */ #ifndef XSK_H_ #define XSK_H_ /* Masks for xdp_umem_page flags. * The low 12-bits of the addr will be 0 since this is the page address, so we * can use them for flags. */ #define XSK_NEXT_PG_CONTIG_SHIFT 0 #define XSK_NEXT_PG_CONTIG_MASK BIT_ULL(XSK_NEXT_PG_CONTIG_SHIFT) /* Flags for the umem flags field. * * The NEED_WAKEUP flag is 1 due to the reuse of the flags field for public * flags. See inlude/uapi/include/linux/if_xdp.h. */ #define XDP_UMEM_USES_NEED_WAKEUP BIT(1) struct xdp_ring_offset_v1 { __u64 producer; __u64 consumer; __u64 desc; }; struct xdp_mmap_offsets_v1 { struct xdp_ring_offset_v1 rx; struct xdp_ring_offset_v1 tx; struct xdp_ring_offset_v1 fr; struct xdp_ring_offset_v1 cr; }; /* Nodes are linked in the struct xdp_sock map_list field, and used to * track which maps a certain socket reside in. */ struct xsk_map_node { struct list_head node; struct xsk_map *map; struct xdp_sock **map_entry; }; static inline struct xdp_sock *xdp_sk(struct sock *sk) { return (struct xdp_sock *)sk; } bool xsk_is_setup_for_bpf_map(struct xdp_sock *xs); void xsk_map_try_sock_delete(struct xsk_map *map, struct xdp_sock *xs, struct xdp_sock **map_entry); int xsk_map_inc(struct xsk_map *map); void xsk_map_put(struct xsk_map *map); #endif /* XSK_H_ */