From patchwork Wed Dec 1 04:23:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kumar Kartikeya Dwivedi X-Patchwork-Id: 12649009 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 B556DC433EF for ; Wed, 1 Dec 2021 04:24:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346570AbhLAE1p (ORCPT ); Tue, 30 Nov 2021 23:27:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49546 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346513AbhLAE1g (ORCPT ); Tue, 30 Nov 2021 23:27:36 -0500 Received: from mail-pf1-x442.google.com (mail-pf1-x442.google.com [IPv6:2607:f8b0:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D96C5C061757; Tue, 30 Nov 2021 20:23:52 -0800 (PST) Received: by mail-pf1-x442.google.com with SMTP id r130so23054259pfc.1; Tue, 30 Nov 2021 20:23:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=FHgCXMZqFYvkD6qdznJ6BR7nNTjcADokUMa/fFZF/nk=; b=N4eUQuHve5bweBa+tX73OvM7XorYiCyjlF4pFKjJ4Nu8Qh7IOBSQ6Gl6SaXVElnK1s 18Q82hLsGIYIgo5KTsrFxY13Slh3iSIV2g8DMirh6AzPUITHRevAbRDczaKuEULjF/Ju jzsnmQaqbsn1FQ5DlHEFVEsTTj/6E4Gi+VJzN3ibzB2eGM1Kyn+/kwdnHRcE8mv1ayPB VcJzxvHfXCgHCVD2fizFhUb4bkEm3wbQX2W+ZZ/c//QareiCRvBTwGmjL2Q6cSVC8re+ s4197kdgoTJYK/g6JX17kcjWTLdsjJ/UXOJu96GNzKoVGVNJfqeojfjDXnA4e7j9kDyM mQVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=FHgCXMZqFYvkD6qdznJ6BR7nNTjcADokUMa/fFZF/nk=; b=3A/tSP5lVoFut+KJv8b+aE9I1qPDH5SfMoEkRqRSTRyLUGFEkf7sbiDC1WQD6kjwzx 05u4m/aWz4rSNSAVKi8oElPUyj6t81VbtCb3XEx0FGy4kXfL7ABRxvaiwho9Aagz/uPu L9j84KwBOAxwBf6LqTzwBLrX7XZeVtjCctXrUtr1I7censiaGQHIlfrmuUy11BUe4ixr n6AEZy0Y0+Z4IBPBU9rvUUZflOPUNQwPy1Ivy7Agsp9esG/L8PGxSyuk2/ew9pofWpe/ /4T9Hs3JZT24VYgVRrYWutWwB3+fJkM4UK3SrtzXPSiza3W3QG2Z9jceBd/4bR9sVeS9 sluQ== X-Gm-Message-State: AOAM530Drwf3IEh2BtgLa1K8o20yhLohHurfi/BbPPyv60HcWlWadDMM xYfFvoIXa/VbOPQwI0bbZgIQ6zW0PWo= X-Google-Smtp-Source: ABdhPJyGdJTP/hIderRqDZG9P+XcHQipQ3pQqC8+czstFQ5AbMAZpqLzDJ4MWFfh4ZCxNxXS4HJTrw== X-Received: by 2002:a05:6a00:807:b0:49f:d6ab:590c with SMTP id m7-20020a056a00080700b0049fd6ab590cmr3666943pfk.32.1638332632300; Tue, 30 Nov 2021 20:23:52 -0800 (PST) Received: from localhost ([2405:201:6014:d064:3d4e:6265:800c:dc84]) by smtp.gmail.com with ESMTPSA id v1sm21695285pfg.169.2021.11.30.20.23.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Nov 2021 20:23:52 -0800 (PST) From: Kumar Kartikeya Dwivedi To: bpf@vger.kernel.org Cc: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Yonghong Song , Pavel Emelyanov , Alexander Mikhalitsyn , Andrei Vagin , criu@openvz.org, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH bpf-next v3 05/10] bpftool: Output io_uring iterator info Date: Wed, 1 Dec 2021 09:53:28 +0530 Message-Id: <20211201042333.2035153-6-memxor@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20211201042333.2035153-1-memxor@gmail.com> References: <20211201042333.2035153-1-memxor@gmail.com> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2337; h=from:subject; bh=AzWo3KQKcucubukC3jB1Ua1DZJ24Akt6XiNikymWxlw=; b=owEBbQKS/ZANAwAIAUzgyIZIvxHKAcsmYgBhpvYyf9f2STSREJ6G62ED68G1TqCyrjJoGgtD4FQh b+FkM2eJAjMEAAEIAB0WIQRLvip+Buz51YI8YRFM4MiGSL8RygUCYab2MgAKCRBM4MiGSL8RylWxD/ 4oDbn6W5hPzuxfCu2kQx0N50BQLbixvZ3qThi1mL/zQks+MRERR93GlZuDhIeNphmafsJl7frKuf9R YqpJbt0Msvmkz9pZKbZxLIK0F6RyXfByPkwovjMxvZnkK0hXGFBtr22M8ikpvJ9k7Au8oLtfPhTCIZ BY3QIKFndECrluPHiJ4jshF5qR+11L4lYKyBtFn1KOvwQZ6znF9/eoQwVuSguoAB2NNFLFaB8d7+to /tJ/BTBNcrikz5n/GWkkzwJibBEEX2M9Xrne9iwBGLKYx/dRLXUvsOx4XzIqSsKhfoJvyX3Xtc7Gbk vH4Hkj3hyCarM0aXoFMTP52Npoeoe0KkbmbGW+44oEwrk7/tQ/Phjw3mg7oIsm15uZ182iSaxKzQKp cEdaKe3j52pQGO8Y8j+Cl0knyinszSiV3bIQrpGrF2Pyq9/yt45udgCXTZitHWe3FF8K3q96Ake/ia 1jLK5ZwK/YZszQqAW4B4d4MfCsidvR5KGRu42VSPqtEGPZk/1LNA+9yyX6ayGOcR0twrRhW95Hj4rv mo3eg/I0uPM1ipaVNTtyarOnwWNIFCONAs0xijq1s4FOOp49byoQ6NLpN9aqrHcs1JOXXLAr22h+u2 gJuWCOLyWhlHAQoyQd5JZJ9Kdxr1eX0SrQdyoT1TM5QU/2Ynz5U+vta1a1rA== X-Developer-Key: i=memxor@gmail.com; a=openpgp; fpr=4BBE2A7E06ECF9D5823C61114CE0C88648BF11CA Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net Output the sole field related to io_uring iterator (inode of attached io_uring) so that it can be useful in informational and also debugging cases (trying to find actual io_uring fd attached to the iterator). Output: 89: iter prog 262 target_name io_uring_file io_uring_inode 16764 pids test_progs(384) [ { "id": 123, "type": "iter", "prog_id": 463, "target_name": "io_uring_buf", "io_uring_inode": 16871, "pids": [ { "pid": 443, "comm": "test_progs" } ] } ] [ { "id": 126, "type": "iter", "prog_id": 483, "target_name": "io_uring_file", "io_uring_inode": 16887, "pids": [ { "pid": 448, "comm": "test_progs" } ] } ] Signed-off-by: Kumar Kartikeya Dwivedi --- tools/bpf/bpftool/link.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c index 2c258db0d352..409ae861b839 100644 --- a/tools/bpf/bpftool/link.c +++ b/tools/bpf/bpftool/link.c @@ -86,6 +86,12 @@ static bool is_iter_map_target(const char *target_name) strcmp(target_name, "bpf_sk_storage_map") == 0; } +static bool is_iter_io_uring_target(const char *target_name) +{ + return strcmp(target_name, "io_uring_file") == 0 || + strcmp(target_name, "io_uring_buf") == 0; +} + static void show_iter_json(struct bpf_link_info *info, json_writer_t *wtr) { const char *target_name = u64_to_ptr(info->iter.target_name); @@ -94,6 +100,8 @@ static void show_iter_json(struct bpf_link_info *info, json_writer_t *wtr) if (is_iter_map_target(target_name)) jsonw_uint_field(wtr, "map_id", info->iter.map.map_id); + else if (is_iter_io_uring_target(target_name)) + jsonw_uint_field(wtr, "io_uring_inode", info->iter.io_uring.inode); } static int get_prog_info(int prog_id, struct bpf_prog_info *info) @@ -204,6 +212,8 @@ static void show_iter_plain(struct bpf_link_info *info) if (is_iter_map_target(target_name)) printf("map_id %u ", info->iter.map.map_id); + else if (is_iter_io_uring_target(target_name)) + printf("io_uring_inode %llu ", info->iter.io_uring.inode); } static int show_link_close_plain(int fd, struct bpf_link_info *info)