Commit d18616e7 authored by Daniel Müller's avatar Daniel Müller Committed by Andrii Nakryiko
Browse files

libbpf: Introduce libbpf_bpf_prog_type_str 



This change introduces a new function, libbpf_bpf_prog_type_str, to the
public libbpf API. The function allows users to get a string
representation for a bpf_prog_type variant.

Signed-off-by: default avatarDaniel Müller <deso@posteo.net>
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Acked-by: default avatarQuentin Monnet <quentin@isovalent.com>
Acked-by: default avatarYonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220523230428.3077108-2-deso@posteo.net
parent cc168554

tools/lib/bpf/libbpf.c

+43 −0
Original line number Diff line number Diff line
@@ -72,6 +72,41 @@ 
static struct bpf_map *bpf_object__add_map(struct bpf_object *obj);

static bool prog_is_subprog(const struct bpf_object *obj, const struct bpf_program *prog);



static const char * const prog_type_name[] = {

	[BPF_PROG_TYPE_UNSPEC]			= "unspec",

	[BPF_PROG_TYPE_SOCKET_FILTER]		= "socket_filter",

	[BPF_PROG_TYPE_KPROBE]			= "kprobe",

	[BPF_PROG_TYPE_SCHED_CLS]		= "sched_cls",

	[BPF_PROG_TYPE_SCHED_ACT]		= "sched_act",

	[BPF_PROG_TYPE_TRACEPOINT]		= "tracepoint",

	[BPF_PROG_TYPE_XDP]			= "xdp",

	[BPF_PROG_TYPE_PERF_EVENT]		= "perf_event",

	[BPF_PROG_TYPE_CGROUP_SKB]		= "cgroup_skb",

	[BPF_PROG_TYPE_CGROUP_SOCK]		= "cgroup_sock",

	[BPF_PROG_TYPE_LWT_IN]			= "lwt_in",

	[BPF_PROG_TYPE_LWT_OUT]			= "lwt_out",

	[BPF_PROG_TYPE_LWT_XMIT]		= "lwt_xmit",

	[BPF_PROG_TYPE_SOCK_OPS]		= "sock_ops",

	[BPF_PROG_TYPE_SK_SKB]			= "sk_skb",

	[BPF_PROG_TYPE_CGROUP_DEVICE]		= "cgroup_device",

	[BPF_PROG_TYPE_SK_MSG]			= "sk_msg",

	[BPF_PROG_TYPE_RAW_TRACEPOINT]		= "raw_tracepoint",

	[BPF_PROG_TYPE_CGROUP_SOCK_ADDR]	= "cgroup_sock_addr",

	[BPF_PROG_TYPE_LWT_SEG6LOCAL]		= "lwt_seg6local",

	[BPF_PROG_TYPE_LIRC_MODE2]		= "lirc_mode2",

	[BPF_PROG_TYPE_SK_REUSEPORT]		= "sk_reuseport",

	[BPF_PROG_TYPE_FLOW_DISSECTOR]		= "flow_dissector",

	[BPF_PROG_TYPE_CGROUP_SYSCTL]		= "cgroup_sysctl",

	[BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE]	= "raw_tracepoint_writable",

	[BPF_PROG_TYPE_CGROUP_SOCKOPT]		= "cgroup_sockopt",

	[BPF_PROG_TYPE_TRACING]			= "tracing",

	[BPF_PROG_TYPE_STRUCT_OPS]		= "struct_ops",

	[BPF_PROG_TYPE_EXT]			= "ext",

	[BPF_PROG_TYPE_LSM]			= "lsm",

	[BPF_PROG_TYPE_SK_LOOKUP]		= "sk_lookup",

	[BPF_PROG_TYPE_SYSCALL]			= "syscall",

};



static int __base_pr(enum libbpf_print_level level, const char *format,

		     va_list args)

{
@@ -9300,6 +9335,14 @@ int libbpf_prog_type_by_name(const char *name, enum bpf_prog_type *prog_type, 
	return libbpf_err(-ESRCH);

}



const char *libbpf_bpf_prog_type_str(enum bpf_prog_type t)

{

	if (t < 0 || t >= ARRAY_SIZE(prog_type_name))

		return NULL;



	return prog_type_name[t];

}



static struct bpf_map *find_struct_ops_map_by_offset(struct bpf_object *obj,

						     size_t offset)

{

tools/lib/bpf/libbpf.h

+9 −0
Original line number Diff line number Diff line
@@ -51,6 +51,15 @@ enum libbpf_errno { 


LIBBPF_API int libbpf_strerror(int err, char *buf, size_t size);



/**

 * @brief **libbpf_bpf_prog_type_str()** converts the provided program type

 * value into a textual representation.

 * @param t The program type.

 * @return Pointer to a static string identifying the program type. NULL is

 * returned for unknown **bpf_prog_type** values.

 */

LIBBPF_API const char *libbpf_bpf_prog_type_str(enum bpf_prog_type t);



enum libbpf_print_level {

        LIBBPF_WARN,

        LIBBPF_INFO,

tools/lib/bpf/libbpf.map

+3 −0
Original line number Diff line number Diff line
@@ -461,5 +461,8 @@ LIBBPF_0.8.0 { 
} LIBBPF_0.7.0;



LIBBPF_1.0.0 {

	global:

		libbpf_bpf_prog_type_str;



	local: *;

};