Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef __BPF_LOAD_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define __BPF_LOAD_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <bpf/bpf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #define MAX_MAPS 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #define MAX_PROGS 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) struct bpf_load_map_def {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	unsigned int type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	unsigned int key_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	unsigned int value_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	unsigned int max_entries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	unsigned int map_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	unsigned int inner_map_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	unsigned int numa_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct bpf_map_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	size_t elf_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	struct bpf_load_map_def def;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) typedef void (*fixup_map_cb)(struct bpf_map_data *map, int idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) extern int prog_fd[MAX_PROGS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) extern int event_fd[MAX_PROGS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) extern char bpf_log_buf[BPF_LOG_BUF_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) extern int prog_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /* There is a one-to-one mapping between map_fd[] and map_data[].
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)  * The map_data[] just contains more rich info on the given map.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) extern int map_fd[MAX_MAPS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) extern struct bpf_map_data map_data[MAX_MAPS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) extern int map_data_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /* parses elf file compiled by llvm .c->.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)  * . parses 'maps' section and creates maps via BPF syscall
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)  * . parses 'license' section and passes it to syscall
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)  * . parses elf relocations for BPF maps and adjusts BPF_LD_IMM64 insns by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)  *   storing map_fd into insn->imm and marking such insns as BPF_PSEUDO_MAP_FD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)  * . loads eBPF programs via BPF syscall
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)  * One ELF file can contain multiple BPF programs which will be loaded
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)  * and their FDs stored stored in prog_fd array
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)  * returns zero on success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) int load_bpf_file(char *path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int load_bpf_file_fixup_map(const char *path, fixup_map_cb fixup_map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) int bpf_set_link_xdp_fd(int ifindex, int fd, __u32 flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #endif