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89e4a376e3
Move the XSK_NEXT_PG_CONTIG_{MASK,SHIFT}, and
XDP_UMEM_USES_NEED_WAKEUP defines from xdp_sock.h to the AF_XDP
internal xsk.h file. Also, start using the BIT{,_ULL} macro instead of
explicit shifts.
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200520192103.355233-5-bjorn.topel@gmail.com
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright(c) 2019 Intel Corporation. */
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#ifndef XSK_H_
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#define XSK_H_
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/* Masks for xdp_umem_page flags.
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* The low 12-bits of the addr will be 0 since this is the page address, so we
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* can use them for flags.
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*/
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#define XSK_NEXT_PG_CONTIG_SHIFT 0
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#define XSK_NEXT_PG_CONTIG_MASK BIT_ULL(XSK_NEXT_PG_CONTIG_SHIFT)
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/* Flags for the umem flags field.
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*
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* The NEED_WAKEUP flag is 1 due to the reuse of the flags field for public
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* flags. See inlude/uapi/include/linux/if_xdp.h.
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*/
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#define XDP_UMEM_USES_NEED_WAKEUP BIT(1)
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struct xdp_ring_offset_v1 {
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__u64 producer;
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__u64 consumer;
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__u64 desc;
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};
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struct xdp_mmap_offsets_v1 {
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struct xdp_ring_offset_v1 rx;
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struct xdp_ring_offset_v1 tx;
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struct xdp_ring_offset_v1 fr;
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struct xdp_ring_offset_v1 cr;
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};
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/* Nodes are linked in the struct xdp_sock map_list field, and used to
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* track which maps a certain socket reside in.
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*/
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struct xsk_map_node {
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struct list_head node;
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struct xsk_map *map;
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struct xdp_sock **map_entry;
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};
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static inline struct xdp_sock *xdp_sk(struct sock *sk)
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{
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return (struct xdp_sock *)sk;
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}
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bool xsk_is_setup_for_bpf_map(struct xdp_sock *xs);
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void xsk_map_try_sock_delete(struct xsk_map *map, struct xdp_sock *xs,
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struct xdp_sock **map_entry);
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int xsk_map_inc(struct xsk_map *map);
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void xsk_map_put(struct xsk_map *map);
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#endif /* XSK_H_ */
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