59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __BPF_LOAD_H
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#define __BPF_LOAD_H
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#include <bpf/bpf.h>
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#define MAX_MAPS 32
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#define MAX_PROGS 32
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struct bpf_load_map_def {
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unsigned int type;
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unsigned int key_size;
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unsigned int value_size;
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unsigned int max_entries;
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unsigned int map_flags;
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unsigned int inner_map_idx;
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unsigned int numa_node;
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};
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struct bpf_map_data {
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int fd;
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char *name;
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size_t elf_offset;
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struct bpf_load_map_def def;
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};
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typedef void (*fixup_map_cb)(struct bpf_map_data *map, int idx);
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extern int prog_fd[MAX_PROGS];
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extern int event_fd[MAX_PROGS];
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extern char bpf_log_buf[BPF_LOG_BUF_SIZE];
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extern int prog_cnt;
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/* There is a one-to-one mapping between map_fd[] and map_data[].
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* The map_data[] just contains more rich info on the given map.
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*/
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extern int map_fd[MAX_MAPS];
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extern struct bpf_map_data map_data[MAX_MAPS];
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extern int map_data_count;
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/* parses elf file compiled by llvm .c->.o
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* . parses 'maps' section and creates maps via BPF syscall
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* . parses 'license' section and passes it to syscall
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* . parses elf relocations for BPF maps and adjusts BPF_LD_IMM64 insns by
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* storing map_fd into insn->imm and marking such insns as BPF_PSEUDO_MAP_FD
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* . loads eBPF programs via BPF syscall
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*
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* One ELF file can contain multiple BPF programs which will be loaded
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* and their FDs stored stored in prog_fd array
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*
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* returns zero on success
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*/
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int load_bpf_file(char *path);
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int load_bpf_file_fixup_map(const char *path, fixup_map_cb fixup_map);
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void read_trace_pipe(void);
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int bpf_set_link_xdp_fd(int ifindex, int fd, __u32 flags);
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#endif
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