From patchwork Mon May 16 17:35:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Daniel_M=C3=BCller?= X-Patchwork-Id: 12851288 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0A786C43217 for ; Mon, 16 May 2022 17:36:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344310AbiEPRg0 (ORCPT ); Mon, 16 May 2022 13:36:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344359AbiEPRgQ (ORCPT ); Mon, 16 May 2022 13:36:16 -0400 Received: from mout02.posteo.de (mout02.posteo.de [185.67.36.66]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BCDFA240AF for ; Mon, 16 May 2022 10:36:09 -0700 (PDT) Received: from submission (posteo.de [185.67.36.169]) by mout02.posteo.de (Postfix) with ESMTPS id 6FA8924010C for ; Mon, 16 May 2022 19:36:08 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.net; s=2017; t=1652722568; bh=beWd3+1ktjcNiK74XyhTIcuOy51CsvxBWvw9zd54nRQ=; h=From:To:Subject:Date:From; b=ZGLLssZq1tX7TNgTo7LKyeBMwAAEJCV6yPHBFRflFNcmcWdKCuqkJ1h2UBS9zQe+v 0QjcnwcnYbPD4n0hBBSJmhex24juNXFSjAMvcivxPSYterUSKUrdN9LYbHCFHBunkj r7aNyCK/kpUwT0rUK9l2xzAuN75eO03vlo6W/SZteJiuswPpzahx+L/X3yFkaGVP4i TOk4F7cyuCWBIBuNmLVnuzB3qdtGsoZDwrGYXqmLlznFbnfLcXdbsWSGiuIYyQKL+P jLr91Zp7X5vH70nTbnq4mekcZ2JgF7m6R4qPgTlilv9WsuIiR/VVywl7plgVYEYUs0 kO13wdgL0WSAA== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4L25yH2p0qz6tmj; Mon, 16 May 2022 19:36:07 +0200 (CEST) From: =?utf-8?q?Daniel_M=C3=BCller?= To: bpf@vger.kernel.org, ast@kernel.org, andrii@kernel.org, daniel@iogearbox.net, kernel-team@fb.com, quentin@isovalent.com Subject: [PATCH bpf-next 10/12] libbpf: Introduce libbpf_bpf_link_type_str Date: Mon, 16 May 2022 17:35:38 +0000 Message-Id: <20220516173540.3520665-11-deso@posteo.net> In-Reply-To: <20220516173540.3520665-1-deso@posteo.net> References: <20220516173540.3520665-1-deso@posteo.net> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net This change introduces a new function, libbpf_bpf_link_type_str, to the public libbpf API. The function allows users to get a string representation for a bpf_link_type enum variant. Signed-off-by: Daniel Müller --- tools/lib/bpf/libbpf.c | 21 +++++++++++++++++++++ tools/lib/bpf/libbpf.h | 9 +++++++++ tools/lib/bpf/libbpf.map | 1 + 3 files changed, 31 insertions(+) diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index a69a752..5596679 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -118,6 +118,19 @@ static const char * const attach_type_name[] = { [BPF_TRACE_KPROBE_MULTI] = "trace_kprobe_multi", }; +static const char * const link_type_name[] = { + [BPF_LINK_TYPE_UNSPEC] = "unspec", + [BPF_LINK_TYPE_RAW_TRACEPOINT] = "raw_tracepoint", + [BPF_LINK_TYPE_TRACING] = "tracing", + [BPF_LINK_TYPE_CGROUP] = "cgroup", + [BPF_LINK_TYPE_ITER] = "iter", + [BPF_LINK_TYPE_NETNS] = "netns", + [BPF_LINK_TYPE_XDP] = "xdp", + [BPF_LINK_TYPE_PERF_EVENT] = "perf_event", + [BPF_LINK_TYPE_KPROBE_MULTI] = "kprobe_multi", + [BPF_LINK_TYPE_STRUCT_OPS] = "struct_ops", +}; + static const char * const map_type_name[] = { [BPF_MAP_TYPE_UNSPEC] = "unspec", [BPF_MAP_TYPE_HASH] = "hash", @@ -9423,6 +9436,14 @@ const char *libbpf_bpf_attach_type_str(enum bpf_attach_type t) return attach_type_name[t]; } +const char *libbpf_bpf_link_type_str(enum bpf_link_type t) +{ + if (t < 0 || t >= ARRAY_SIZE(link_type_name)) + return NULL; + + return link_type_name[t]; +} + const char *libbpf_bpf_map_type_str(enum bpf_map_type t) { if (t < 0 || t >= ARRAY_SIZE(map_type_name)) diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index 37a234..5b34ca 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -60,6 +60,15 @@ LIBBPF_API int libbpf_strerror(int err, char *buf, size_t size); */ LIBBPF_API const char *libbpf_bpf_attach_type_str(enum bpf_attach_type t); +/** + * @brief **libbpf_bpf_link_type_str()** converts the provided link type value + * into a textual representation. + * @param t The link type. + * @return Pointer to a static string identifying the link type. NULL is + * returned for unknown **bpf_link_type** values. + */ +LIBBPF_API const char *libbpf_bpf_link_type_str(enum bpf_link_type t); + /** * @brief **libbpf_bpf_map_type_str()** converts the provided map type value * into a textual representation. diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index d045d6..c7cf4b6 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -457,6 +457,7 @@ LIBBPF_0.8.0 { bpf_program__attach_usdt; bpf_program__set_insns; libbpf_bpf_attach_type_str; + libbpf_bpf_link_type_str; libbpf_bpf_map_type_str; libbpf_bpf_prog_type_str; libbpf_register_prog_handler;