From patchwork Sat Mar 19 17:30:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yafang Shao X-Patchwork-Id: 553106 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 EDE22C4167B for ; Sat, 19 Mar 2022 17:31:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243681AbiCSRco (ORCPT ); Sat, 19 Mar 2022 13:32:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35152 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243702AbiCSRcW (ORCPT ); Sat, 19 Mar 2022 13:32:22 -0400 Received: from mail-pj1-x102c.google.com (mail-pj1-x102c.google.com [IPv6:2607:f8b0:4864:20::102c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D9AC646B04; Sat, 19 Mar 2022 10:30:58 -0700 (PDT) Received: by mail-pj1-x102c.google.com with SMTP id mz9-20020a17090b378900b001c657559290so10657015pjb.2; Sat, 19 Mar 2022 10:30:58 -0700 (PDT) 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=gNHwzX1XXzyuZEkRQLK5ljL7FKM2KTEIhvt/+nJ9w5k=; b=cWsSBz1wcJLbkEhvadWb1z178lDBINSMILOr0KYVKwhDbun9djaH9TCmc3V/X47pym DuDLtLZW9Mw1cTrnsjsKmlH7ZvuFPFkJ4rsarGoModU082cK1VA+dDJ+GNIc5CwoKx34 wvQQTZSYyrSVI7T6FfY1aefOUuwaZmC5wiCWxKZqWxV9RepJVsKZh34D2LgSsyFjKZuK BUthR6o8mnnz61PINJHyIrwp2uDJw5Xecw1vVn5dz30SLOTpiWnp0p0ojMl2ldLivLyo awA5jMvuzOhSmBdGifSsHR9p9ndyhKd83qk3MlNvtLjcTPqaODL9fz9n1vXPSd4moFCf +X/A== 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=gNHwzX1XXzyuZEkRQLK5ljL7FKM2KTEIhvt/+nJ9w5k=; b=XfqoWp/LEYVCUwVdRZ2WhIQ+Oe72Bao3Y5nw/uWn9wt5DQg37rXBw4HCYoiwAXQbeJ BdjOFxOaVUMdu+HvTOVe+YYbrKHX1umguWqnKcbzgJIiSeR7eGWkfE02SH3qdv97fbso yhcWy9uBR5/A3srgOvB2HvaKAFhW5Qi8KhvaQHZwhlUPCaRCzvKrxIxLdFQTVh5ulBsu x3FGU9WUOpuUy/HtDg/0wbAPLKuLSEgyyJawO8HM2oBWCpaaEJ8DSqibsxgFfdinHQAO /kdno53tPsg0EomsNp+0HDearF+h/eFraJH3BCfLHtS62FN2bH65P9V55df+o7qXTx17 cE3Q== X-Gm-Message-State: AOAM532GiV0mk9FaiBL1V2+9fnUIB8tBHshL6wI/ohMViHWoL5P5Q6VF RUHtTYgPhR5Y0KFSIj1jfS8= X-Google-Smtp-Source: ABdhPJx0WWiyXY4tSlfUjYz1EUtkAZiBSBQOTjQ9TIbe9waIxqXbbGnwv+SSon9nwqQjPI9mhc08Og== X-Received: by 2002:a17:90a:7305:b0:1bd:6972:faf5 with SMTP id m5-20020a17090a730500b001bd6972faf5mr17517556pjk.131.1647711058332; Sat, 19 Mar 2022 10:30:58 -0700 (PDT) Received: from vultr.guest ([2001:19f0:6001:4ab8:5400:3ff:fee9:a154]) by smtp.gmail.com with ESMTPSA id k21-20020aa788d5000000b004f71bff2893sm12722136pff.67.2022.03.19.10.30.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Mar 2022 10:30:57 -0700 (PDT) From: Yafang Shao To: roman.gushchin@linux.dev, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, kafai@fb.com, songliubraving@fb.com, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, shuah@kernel.org Cc: netdev@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, Yafang Shao Subject: [PATCH 14/14] bpf: selftests: Add test case for BPF_F_PROG_NO_CHARGE Date: Sat, 19 Mar 2022 17:30:36 +0000 Message-Id: <20220319173036.23352-15-laoar.shao@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220319173036.23352-1-laoar.shao@gmail.com> References: <20220319173036.23352-1-laoar.shao@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Test case to check if BPF_F_PROG_NO_CHARGE valid. The result as follows, $ ./test_progs ... #103 no_charge:OK ... Signed-off-by: Yafang Shao --- .../selftests/bpf/prog_tests/no_charge.c | 49 +++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/no_charge.c diff --git a/tools/testing/selftests/bpf/prog_tests/no_charge.c b/tools/testing/selftests/bpf/prog_tests/no_charge.c new file mode 100644 index 000000000000..85fbd2ccbc71 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/no_charge.c @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include +#include +#include + +#include "test_progs.h" + +#define BPF_ALU64_IMM(OP, DST, IMM) \ + ((struct bpf_insn) { \ + .code = BPF_ALU64 | BPF_OP(OP) | BPF_K, \ + .dst_reg = DST, \ + .src_reg = 0, \ + .off = 0, \ + .imm = IMM }) + +#define BPF_EXIT_INSN() \ + ((struct bpf_insn) { \ + .code = BPF_JMP | BPF_EXIT, \ + .dst_reg = 0, \ + .src_reg = 0, \ + .off = 0, \ + .imm = 0 }) + +void test_no_charge(void) +{ + struct bpf_insn prog[] = { + BPF_ALU64_IMM(BPF_MOV, BPF_REG_0, 0), + BPF_EXIT_INSN(), + }; + union bpf_attr attr; + int duration = 0; + int fd; + + bzero(&attr, sizeof(attr)); + attr.prog_type = BPF_PROG_TYPE_SCHED_CLS; + attr.insn_cnt = 2; + attr.insns = (__u64)prog; + attr.license = (__u64)("GPL"); + attr.prog_flags |= BPF_F_PROG_NO_CHARGE; + + fd = syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr)); + CHECK(fd < 0 && fd != -EPERM, "no_charge", "error: %s\n", + strerror(errno)); + + if (fd > 0) + close(fd); +}