BPF_MAP_GET_FD_BY_ID 2197 kernel/bpf/syscall.c if (CHECK_ATTR(BPF_MAP_GET_FD_BY_ID) || BPF_MAP_GET_FD_BY_ID 2918 kernel/bpf/syscall.c case BPF_MAP_GET_FD_BY_ID: BPF_MAP_GET_FD_BY_ID 618 tools/lib/bpf/bpf.c return sys_bpf(BPF_MAP_GET_FD_BY_ID, &attr, sizeof(attr));