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57 lines
1.5 KiB
57 lines
1.5 KiB
/* 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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int bpf_set_link_xdp_fd(int ifindex, int fd, __u32 flags); |
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#endif
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