mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-14 15:54:15 +08:00
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 */
|
|
/* 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_ */
|