Function bpf_load

dpdk/drivers/net/tap/tap_bpf_api.c:113–130

* Load BPF instructions to kernel * * @param[in] type * BPF program type: classifier or action * * @param[in] insns * Array of BPF instructions (equivalent to BPF instructions) * * @param[in] insns_cnt * Number of BPF instructions (size of array) * * @param[in] license * License string that must be acknowledged by the kernel * * @return * -1 if the BPF program couldn't be

 *   -1 if the BPF program couldn't be loaded, fd (file descriptor) otherwise
 */
static int bpf_load(enum bpf_prog_type type,
		  const struct bpf_insn *insns,
		  size_t insns_cnt,
		  const char *license)
{
	union bpf_attr attr = {};

	bzero(&attr, sizeof(attr));
	attr.prog_type = type;
	attr.insn_cnt = (__u32)insns_cnt;
	attr.insns = ptr_to_u64(insns);
	attr.license = ptr_to_u64(license);
	attr.log_buf = ptr_to_u64(NULL);
	attr.log_level = 0;
	attr.kern_version = 0;

	return sys_bpf(BPF_PROG_LOAD, &attr, sizeof(attr));
}

/**
 * Create BPF map for RSS rules