From patchwork Mon May 16 17:35:32 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: 12851285 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 93443C433EF for ; Mon, 16 May 2022 17:35:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344307AbiEPRf4 (ORCPT ); Mon, 16 May 2022 13:35:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37766 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344312AbiEPRfz (ORCPT ); Mon, 16 May 2022 13:35:55 -0400 Received: from mout02.posteo.de (mout02.posteo.de [185.67.36.66]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D9D4D20D for ; Mon, 16 May 2022 10:35:53 -0700 (PDT) Received: from submission (posteo.de [185.67.36.169]) by mout02.posteo.de (Postfix) with ESMTPS id 8A42324010D for ; Mon, 16 May 2022 19:35:52 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.net; s=2017; t=1652722552; bh=Vm33lnXo4gvTiyik3fxlYpZD/YYxTmOTYcBP4pJkBpc=; h=From:To:Subject:Date:From; b=QC87VuMXOWjNnXHGKA5VdzhJKTb89nfwOS0xDY/KrSZoPvsEGIdCC6yaIMGVYjuJP zPrbkqnybxhlzKIxvpHiE+fBl6mi0yaSuznyM+pUxPyelxEhmQMRiaYpZpd5L+mpID eZNLD11BQJAvgCZSudkCfynQSSZQNWyULhYrjUBSFW6q7UFWCujU/Qdf6JJNDIbTXe gwq/pLYdvz3PpUhMsaBdw7rXU5HiLm6EDG3GjYOknobfdD5V0jSQMi610grawSgwNS sQSkF0w8gsGgQ9DbINAhp1IQrwrFcKrHHzfPJe4D9M7At4x7DFa16DIoIhEbB1Eyms JiC2swvDsANvA== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4L25xz2yFGz6tmV; Mon, 16 May 2022 19:35:51 +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 04/12] libbpf: Introduce libbpf_bpf_map_type_str Date: Mon, 16 May 2022 17:35:32 +0000 Message-Id: <20220516173540.3520665-5-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_map_type_str, to the public libbpf API. The function allows users to get a string representation for a bpf_map_type enum variant. Signed-off-by: Daniel Müller --- tools/lib/bpf/libbpf.c | 42 ++++++++++++++++++++++++++++++++++++++++ tools/lib/bpf/libbpf.h | 9 +++++++++ tools/lib/bpf/libbpf.map | 1 + 3 files changed, 52 insertions(+) diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 236c82..c17f836 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -72,6 +72,40 @@ 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 map_type_name[] = { + [BPF_MAP_TYPE_UNSPEC] = "unspec", + [BPF_MAP_TYPE_HASH] = "hash", + [BPF_MAP_TYPE_ARRAY] = "array", + [BPF_MAP_TYPE_PROG_ARRAY] = "prog_array", + [BPF_MAP_TYPE_PERF_EVENT_ARRAY] = "perf_event_array", + [BPF_MAP_TYPE_PERCPU_HASH] = "percpu_hash", + [BPF_MAP_TYPE_PERCPU_ARRAY] = "percpu_array", + [BPF_MAP_TYPE_STACK_TRACE] = "stack_trace", + [BPF_MAP_TYPE_CGROUP_ARRAY] = "cgroup_array", + [BPF_MAP_TYPE_LRU_HASH] = "lru_hash", + [BPF_MAP_TYPE_LRU_PERCPU_HASH] = "lru_percpu_hash", + [BPF_MAP_TYPE_LPM_TRIE] = "lpm_trie", + [BPF_MAP_TYPE_ARRAY_OF_MAPS] = "array_of_maps", + [BPF_MAP_TYPE_HASH_OF_MAPS] = "hash_of_maps", + [BPF_MAP_TYPE_DEVMAP] = "devmap", + [BPF_MAP_TYPE_DEVMAP_HASH] = "devmap_hash", + [BPF_MAP_TYPE_SOCKMAP] = "sockmap", + [BPF_MAP_TYPE_CPUMAP] = "cpumap", + [BPF_MAP_TYPE_XSKMAP] = "xskmap", + [BPF_MAP_TYPE_SOCKHASH] = "sockhash", + [BPF_MAP_TYPE_CGROUP_STORAGE] = "cgroup_storage", + [BPF_MAP_TYPE_REUSEPORT_SOCKARRAY] = "reuseport_sockarray", + [BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE] = "percpu_cgroup_storage", + [BPF_MAP_TYPE_QUEUE] = "queue", + [BPF_MAP_TYPE_STACK] = "stack", + [BPF_MAP_TYPE_SK_STORAGE] = "sk_storage", + [BPF_MAP_TYPE_STRUCT_OPS] = "struct_ops", + [BPF_MAP_TYPE_RINGBUF] = "ringbuf", + [BPF_MAP_TYPE_INODE_STORAGE] = "inode_storage", + [BPF_MAP_TYPE_TASK_STORAGE] = "task_storage", + [BPF_MAP_TYPE_BLOOM_FILTER] = "bloom_filter", +}; + static const char * const prog_type_name[] = { [BPF_PROG_TYPE_UNSPEC] = "unspec", [BPF_PROG_TYPE_SOCKET_FILTER] = "socket_filter", @@ -9335,6 +9369,14 @@ int libbpf_prog_type_by_name(const char *name, enum bpf_prog_type *prog_type, return libbpf_err(-ESRCH); } +const char *libbpf_bpf_map_type_str(enum bpf_map_type t) +{ + if (t < 0 || t >= ARRAY_SIZE(map_type_name)) + return NULL; + + return map_type_name[t]; +} + const char *libbpf_bpf_prog_type_str(enum bpf_prog_type t) { if (t < 0 || t >= ARRAY_SIZE(prog_type_name)) diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index 11b5f8c..6c5b07 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -51,6 +51,15 @@ enum libbpf_errno { LIBBPF_API int libbpf_strerror(int err, char *buf, size_t size); +/** + * @brief **libbpf_bpf_map_type_str()** converts the provided map type value + * into a textual representation. + * @param t The map type. + * @return Pointer to a static string identifying the map type. NULL is + * returned for unknown **bpf_map_type** values. + */ +LIBBPF_API const char *libbpf_bpf_map_type_str(enum bpf_map_type t); + /** * @brief **libbpf_bpf_prog_type_str()** converts the provided program type * value into a textual representation. diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index 8b93647..c63624 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -456,6 +456,7 @@ LIBBPF_0.8.0 { bpf_program__attach_trace_opts; bpf_program__attach_usdt; bpf_program__set_insns; + libbpf_bpf_map_type_str; libbpf_bpf_prog_type_str; libbpf_register_prog_handler; libbpf_unregister_prog_handler;