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