From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f195.google.com (mail-pl1-f195.google.com [209.85.214.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5C3142848BE for ; Sat, 24 Jan 2026 06:21:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.195 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769235712; cv=none; b=swNeJpisDjHtk5RzWrixdV4CxTNiFF1vCX9669c60B4iCa4cbtlM3MIWPscAGG1kbDfMZ5jUjY5nx/PahtFCF+c033JkuWZAIcD/+F8KHYeo8ZgTj9oBKfHNDtkaFpXzrc1Wrw/S+HuFw4klnZsRUPoF5KCdbXe1CTYzgeKwDR8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769235712; c=relaxed/simple; bh=NMhfMKw+E8jT0WPxwfHo2GO3dNgWbESa3HXh/xZZFQI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tgZQqNnWZT6WkQ47GGFUkVHv/i6AEdSwSSms/xgrLXtB7Ob3jbQbo5JZhnZYEL/CWUUo23xlP5e33fy+MWYK1mf/G78+vVdDLDGpC8vxC9i6MBuLnvGFoXU9z9HGBqxU6XDvAdltELvSfGAc+qNwuGR/lY6Kt5CsaUgL3w+hFcg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=nnyPgBgk; arc=none smtp.client-ip=209.85.214.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="nnyPgBgk" Received: by mail-pl1-f195.google.com with SMTP id d9443c01a7336-2a0c20ee83dso29428955ad.2 for ; Fri, 23 Jan 2026 22:21:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1769235711; x=1769840511; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=9tfRq7kpRfTqZi2VUjEMy6rc+Konf695G7WjTH97jCE=; b=nnyPgBgk0Qt6bK5+nC3N48gjjAI/cW3QWwZ3OAQoJgf2HUYBf6HofP8sSkco4f5WKU cRO704xHhrCzXG4coK6LtaZIa9mpNBJduPfaxOq5khBCsPNK6Ri9ZyR/mA9Ya9WE/HME Clmg4WIfqLjHU+lKYRrZQmJgYhiGaU3iKwi+y014xwG8iogBkNqim71dqZvMAtQJB7xl c126dt3UoWbtkeAlkB16OVBHUQxyypBVpi0uIjYGNygZYNEZtnD0RVtA8lmiCt818VYV 3/2UlPwIIksq3MbriZEVS9+PlOwvXiZC4Y3xV9AjuX7aYCYNUwkm4B7F+Xpte9eoj47I ASfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769235711; x=1769840511; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=9tfRq7kpRfTqZi2VUjEMy6rc+Konf695G7WjTH97jCE=; b=FOWt0uSwnfTQlt2V7L4Rm8RRJFxfXq7e963WzgY9UiBplNB8LewyhvGAcDLB2tszlD nSDduqmAGOBxBhkcCNPTH/Tqs/bpFaSf0QYfnjWBnNAL7hNCZAcLe6JVi+fFAzjgyprS 6kZlYncSET9U2KixTclkFNAExNAuHmj/UOQc+GLMlqCo5B1GP87w1NLz7/tLrQHTk71w lvd2uhEaLGAKtbFLXjZxSounW3Fg2pQLAL0zmlELKw8WADHsJ2gnfl6KWVC/P44Ch6WT HKuO723TGox6j6Sn4dpnr56Vcjz0xs9r8EQ0uagspODEqL2m6OBqOj9uwp7XB3SRVzfJ fYzA== X-Forwarded-Encrypted: i=1; AJvYcCWw+TRUPE12Q2hAYD+ok7nogwIMYgzlOTSora5bK0y/9O865Lo+VKHaCRZbED3btKznlZkQPzE=@vger.kernel.org X-Gm-Message-State: AOJu0YyytrBcaMT8Heg+DWVYvSZoLWExJnxBBRLZLvzoFjL9gefmRZuK yRJawMoQ9JKP5T4wbXPuaIciB4SuFeQp1OAf7Nn1cxw5JjxGjmDpExQi X-Gm-Gg: AZuq6aI4a4l+hRAZvZ5EUkg04aMIy69iCRaQbXqA7+8UH4pyXGRN1CNQcSzOSNa8U5A BBS3JNFtiTIErBhhiphrzkDtsN0+c2GYAJI4rCu0jP7SGipVNf1ibewQqASUO0iwTY5ngbvBRSO T8mihGaehpEtZtTxELMrFnKWJtm30JOPBanUtFgHspH5GEvY7g+9DlzZQjVzfTuWdn8B6c9x4BD a48JGURwTxvzt96arPlanGFGncPKmim6mum75gtAgNzE3twDkG3Poh+6QIzpB5LSXGN1YZ+VdII w2tY3VwKeN6GmtbT1AJ8AhSF6UcrB9t0sPhaUDTXvNtsYR4515RIRk/M2DGq+h7Jahyyb3oJW3W FzgbBVCJWVTrgbbOjVECeKu9+y+4qPDwerwYZ5pYUOP0zWtlBytzJVCU91SWcOooWh70xeEzBSG ArBNiy9u+U X-Received: by 2002:a17:903:1aa3:b0:2a7:b646:54d0 with SMTP id d9443c01a7336-2a7fe733e05mr55712075ad.41.1769235710737; Fri, 23 Jan 2026 22:21:50 -0800 (PST) Received: from 7950hx ([103.173.155.241]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-353354a6b5asm6496537a91.9.2026.01.23.22.21.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Jan 2026 22:21:50 -0800 (PST) From: Menglong Dong X-Google-Original-From: Menglong Dong To: andrii@kernel.org Cc: ast@kernel.org, daniel@iogearbox.net, martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, davem@davemloft.net, dsahern@kernel.org, tglx@linutronix.de, mingo@redhat.com, jiang.biao@linux.dev, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH bpf-next v13 10/13] selftests/bpf: add testcases for fsession Date: Sat, 24 Jan 2026 14:20:05 +0800 Message-ID: <20260124062008.8657-11-dongml2@chinatelecom.cn> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260124062008.8657-1-dongml2@chinatelecom.cn> References: <20260124062008.8657-1-dongml2@chinatelecom.cn> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add testcases for BPF_TRACE_FSESSION. The function arguments and return value are tested both in the entry and exit. And the kfunc bpf_session_is_ret() is also tested. Signed-off-by: Menglong Dong --- v3: - restructure the testcase by combine the testcases for session cookie and get_func_ip into one patch --- .../selftests/bpf/prog_tests/fsession_test.c | 90 +++++++++++++++++ .../selftests/bpf/progs/fsession_test.c | 97 +++++++++++++++++++ 2 files changed, 187 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/fsession_test.c create mode 100644 tools/testing/selftests/bpf/progs/fsession_test.c diff --git a/tools/testing/selftests/bpf/prog_tests/fsession_test.c b/tools/testing/selftests/bpf/prog_tests/fsession_test.c new file mode 100644 index 000000000000..75bb42942b67 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/fsession_test.c @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2025 ChinaTelecom */ +#include +#include "fsession_test.skel.h" + +static int check_result(struct fsession_test *skel) +{ + LIBBPF_OPTS(bpf_test_run_opts, topts); + int err, prog_fd; + + /* Trigger test function calls */ + prog_fd = bpf_program__fd(skel->progs.test1); + err = bpf_prog_test_run_opts(prog_fd, &topts); + if (!ASSERT_OK(err, "test_run_opts err")) + return err; + if (!ASSERT_OK(topts.retval, "test_run_opts retval")) + return topts.retval; + + for (int i = 0; i < sizeof(*skel->bss) / sizeof(__u64); i++) { + if (!ASSERT_EQ(((__u64 *)skel->bss)[i], 1, "test_result")) + return -EINVAL; + } + + return 0; +} + +static void test_fsession_basic(void) +{ + struct fsession_test *skel = NULL; + int err; + + skel = fsession_test__open_and_load(); + if (!ASSERT_OK_PTR(skel, "fsession_test__open_and_load")) + goto cleanup; + + err = fsession_test__attach(skel); + if (!ASSERT_OK(err, "fsession_attach")) + goto cleanup; + + check_result(skel); +cleanup: + fsession_test__destroy(skel); +} + +static void test_fsession_reattach(void) +{ + struct fsession_test *skel = NULL; + int err; + + skel = fsession_test__open_and_load(); + if (!ASSERT_OK_PTR(skel, "fsession_test__open_and_load")) + goto cleanup; + + /* first attach */ + err = fsession_test__attach(skel); + if (!ASSERT_OK(err, "fsession_first_attach")) + goto cleanup; + + if (check_result(skel)) + goto cleanup; + + /* detach */ + fsession_test__detach(skel); + + /* reset counters */ + memset(skel->bss, 0, sizeof(*skel->bss)); + + /* second attach */ + err = fsession_test__attach(skel); + if (!ASSERT_OK(err, "fsession_second_attach")) + goto cleanup; + + if (check_result(skel)) + goto cleanup; + +cleanup: + fsession_test__destroy(skel); +} + +void test_fsession_test(void) +{ +#if !defined(__x86_64__) + test__skip(); + return; +#endif + if (test__start_subtest("fsession_test")) + test_fsession_basic(); + if (test__start_subtest("fsession_reattach")) + test_fsession_reattach(); +} diff --git a/tools/testing/selftests/bpf/progs/fsession_test.c b/tools/testing/selftests/bpf/progs/fsession_test.c new file mode 100644 index 000000000000..0e1b66b2dddc --- /dev/null +++ b/tools/testing/selftests/bpf/progs/fsession_test.c @@ -0,0 +1,97 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2025 ChinaTelecom */ +#include +#include +#include + +char _license[] SEC("license") = "GPL"; + +__u64 test1_entry_result = 0; +__u64 test1_exit_result = 0; + +SEC("fsession/bpf_fentry_test1") +int BPF_PROG(test1, int a, int ret) +{ + bool is_exit = bpf_session_is_return(ctx); + + if (!is_exit) { + test1_entry_result = a == 1 && ret == 0; + return 0; + } + + test1_exit_result = a == 1 && ret == 2; + return 0; +} + +__u64 test2_entry_result = 0; +__u64 test2_exit_result = 0; + +SEC("fsession/bpf_fentry_test3") +int BPF_PROG(test2, char a, int b, __u64 c, int ret) +{ + bool is_exit = bpf_session_is_return(ctx); + + if (!is_exit) { + test2_entry_result = a == 4 && b == 5 && c == 6 && ret == 0; + return 0; + } + + test2_exit_result = a == 4 && b == 5 && c == 6 && ret == 15; + return 0; +} + +__u64 test3_entry_result = 0; +__u64 test3_exit_result = 0; + +SEC("fsession/bpf_fentry_test4") +int BPF_PROG(test3, void *a, char b, int c, __u64 d, int ret) +{ + bool is_exit = bpf_session_is_return(ctx); + + if (!is_exit) { + test3_entry_result = a == (void *)7 && b == 8 && c == 9 && d == 10 && ret == 0; + return 0; + } + + test3_exit_result = a == (void *)7 && b == 8 && c == 9 && d == 10 && ret == 34; + return 0; +} + +__u64 test4_entry_result = 0; +__u64 test4_exit_result = 0; + +SEC("fsession/bpf_fentry_test5") +int BPF_PROG(test4, __u64 a, void *b, short c, int d, __u64 e, int ret) +{ + bool is_exit = bpf_session_is_return(ctx); + + if (!is_exit) { + test4_entry_result = a == 11 && b == (void *)12 && c == 13 && d == 14 && + e == 15 && ret == 0; + return 0; + } + + test4_exit_result = a == 11 && b == (void *)12 && c == 13 && d == 14 && + e == 15 && ret == 65; + return 0; +} + +__u64 test5_entry_result = 0; +__u64 test5_exit_result = 0; + +SEC("fsession/bpf_fentry_test7") +int BPF_PROG(test5, struct bpf_fentry_test_t *arg, int ret) +{ + bool is_exit = bpf_session_is_return(ctx); + + if (!is_exit) { + if (!arg) + test5_entry_result = ret == 0; + return 0; + } + + if (!arg) + test5_exit_result = 1; + return 0; +} + -- 2.52.0