[linux-2.6-block.git] / samples / bpf / bpf_load.h

#ifndef __BPF_LOAD_H
#define __BPF_LOAD_H

#define MAX_MAPS 32
#define MAX_PROGS 32

extern int map_fd[MAX_MAPS];
extern int prog_fd[MAX_PROGS];
extern int event_fd[MAX_PROGS];

/* 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);

void read_trace_pipe(void);
struct ksym {
	long addr;
	char *name;
};

int load_kallsyms(void);
struct ksym *ksym_search(long key);
#endif
Commit	Line	Data
249b812d AS	1	#ifndef __BPF_LOAD_H
	2	#define __BPF_LOAD_H
	3
	4	#define MAX_MAPS 32
	5	#define MAX_PROGS 32
	6
	7	extern int map_fd[MAX_MAPS];
	8	extern int prog_fd[MAX_PROGS];
b896c4f9	9	extern int event_fd[MAX_PROGS];
249b812d AS	10
	11	/* parses elf file compiled by llvm .c->.o
	12	* . parses 'maps' section and creates maps via BPF syscall
	13	* . parses 'license' section and passes it to syscall
	14	* . parses elf relocations for BPF maps and adjusts BPF_LD_IMM64 insns by
	15	* storing map_fd into insn->imm and marking such insns as BPF_PSEUDO_MAP_FD
	16	* . loads eBPF programs via BPF syscall
	17	*
	18	* One ELF file can contain multiple BPF programs which will be loaded
	19	* and their FDs stored stored in prog_fd array
	20	*
	21	* returns zero on success
	22	*/
	23	int load_bpf_file(char *path);
	24
b896c4f9	25	void read_trace_pipe(void);
3622e7e4 AS	26	struct ksym {
	27	long addr;
	28	char *name;
	29	};
b896c4f9	30
3622e7e4 AS	31	int load_kallsyms(void);
3622e7e4 AS	32	struct ksym *ksym_search(long key);
249b812d	33	#endif