Commit ccde5760 authored by Daniel Müller's avatar Daniel Müller Committed by Andrii Nakryiko
Browse files

libbpf: Introduce libbpf_bpf_attach_type_str 



This change introduces a new function, libbpf_bpf_attach_type_str, to
the public libbpf API. The function allows users to get a string
representation for a bpf_attach_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/20220523230428.3077108-8-deso@posteo.net
parent 2e98964b

tools/lib/bpf/libbpf.c

+54 −0
Original line number Diff line number Diff line
@@ -72,6 +72,52 @@ 
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 attach_type_name[] = {

	[BPF_CGROUP_INET_INGRESS]	= "cgroup_inet_ingress",

	[BPF_CGROUP_INET_EGRESS]	= "cgroup_inet_egress",

	[BPF_CGROUP_INET_SOCK_CREATE]	= "cgroup_inet_sock_create",

	[BPF_CGROUP_INET_SOCK_RELEASE]	= "cgroup_inet_sock_release",

	[BPF_CGROUP_SOCK_OPS]		= "cgroup_sock_ops",

	[BPF_CGROUP_DEVICE]		= "cgroup_device",

	[BPF_CGROUP_INET4_BIND]		= "cgroup_inet4_bind",

	[BPF_CGROUP_INET6_BIND]		= "cgroup_inet6_bind",

	[BPF_CGROUP_INET4_CONNECT]	= "cgroup_inet4_connect",

	[BPF_CGROUP_INET6_CONNECT]	= "cgroup_inet6_connect",

	[BPF_CGROUP_INET4_POST_BIND]	= "cgroup_inet4_post_bind",

	[BPF_CGROUP_INET6_POST_BIND]	= "cgroup_inet6_post_bind",

	[BPF_CGROUP_INET4_GETPEERNAME]	= "cgroup_inet4_getpeername",

	[BPF_CGROUP_INET6_GETPEERNAME]	= "cgroup_inet6_getpeername",

	[BPF_CGROUP_INET4_GETSOCKNAME]	= "cgroup_inet4_getsockname",

	[BPF_CGROUP_INET6_GETSOCKNAME]	= "cgroup_inet6_getsockname",

	[BPF_CGROUP_UDP4_SENDMSG]	= "cgroup_udp4_sendmsg",

	[BPF_CGROUP_UDP6_SENDMSG]	= "cgroup_udp6_sendmsg",

	[BPF_CGROUP_SYSCTL]		= "cgroup_sysctl",

	[BPF_CGROUP_UDP4_RECVMSG]	= "cgroup_udp4_recvmsg",

	[BPF_CGROUP_UDP6_RECVMSG]	= "cgroup_udp6_recvmsg",

	[BPF_CGROUP_GETSOCKOPT]		= "cgroup_getsockopt",

	[BPF_CGROUP_SETSOCKOPT]		= "cgroup_setsockopt",

	[BPF_SK_SKB_STREAM_PARSER]	= "sk_skb_stream_parser",

	[BPF_SK_SKB_STREAM_VERDICT]	= "sk_skb_stream_verdict",

	[BPF_SK_SKB_VERDICT]		= "sk_skb_verdict",

	[BPF_SK_MSG_VERDICT]		= "sk_msg_verdict",

	[BPF_LIRC_MODE2]		= "lirc_mode2",

	[BPF_FLOW_DISSECTOR]		= "flow_dissector",

	[BPF_TRACE_RAW_TP]		= "trace_raw_tp",

	[BPF_TRACE_FENTRY]		= "trace_fentry",

	[BPF_TRACE_FEXIT]		= "trace_fexit",

	[BPF_MODIFY_RETURN]		= "modify_return",

	[BPF_LSM_MAC]			= "lsm_mac",

	[BPF_SK_LOOKUP]			= "sk_lookup",

	[BPF_TRACE_ITER]		= "trace_iter",

	[BPF_XDP_DEVMAP]		= "xdp_devmap",

	[BPF_XDP_CPUMAP]		= "xdp_cpumap",

	[BPF_XDP]			= "xdp",

	[BPF_SK_REUSEPORT_SELECT]	= "sk_reuseport_select",

	[BPF_SK_REUSEPORT_SELECT_OR_MIGRATE]	= "sk_reuseport_select_or_migrate",

	[BPF_PERF_EVENT]		= "perf_event",

	[BPF_TRACE_KPROBE_MULTI]	= "trace_kprobe_multi",

};



static const char * const map_type_name[] = {

	[BPF_MAP_TYPE_UNSPEC]			= "unspec",

	[BPF_MAP_TYPE_HASH]			= "hash",
@@ -9369,6 +9415,14 @@ int libbpf_prog_type_by_name(const char *name, enum bpf_prog_type *prog_type, 
	return libbpf_err(-ESRCH);

}



const char *libbpf_bpf_attach_type_str(enum bpf_attach_type t)

{

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

		return NULL;



	return attach_type_name[t];

}



const char *libbpf_bpf_map_type_str(enum bpf_map_type t)

{

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

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_attach_type_str()** converts the provided attach type

 * value into a textual representation.

 * @param t The attach type.

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

 * returned for unknown **bpf_attach_type** values.

 */

LIBBPF_API const char *libbpf_bpf_attach_type_str(enum bpf_attach_type t);



/**

 * @brief **libbpf_bpf_map_type_str()** converts the provided map type value

 * into a textual representation.

tools/lib/bpf/libbpf.map

+1 −0
Original line number Diff line number Diff line
@@ -462,6 +462,7 @@ LIBBPF_0.8.0 { 


LIBBPF_1.0.0 {

	global:

		libbpf_bpf_attach_type_str;

		libbpf_bpf_map_type_str;

		libbpf_bpf_prog_type_str;