From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04BBDC64E7A for ; Wed, 18 Nov 2020 00:18:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9C0A02463F for ; Wed, 18 Nov 2020 00:18:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="pp3tDofi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727138AbgKRARv (ORCPT ); Tue, 17 Nov 2020 19:17:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48874 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727120AbgKRARv (ORCPT ); Tue, 17 Nov 2020 19:17:51 -0500 Received: from mail-qt1-x84a.google.com (mail-qt1-x84a.google.com [IPv6:2607:f8b0:4864:20::84a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BFF10C0613CF for ; Tue, 17 Nov 2020 16:17:50 -0800 (PST) Received: by mail-qt1-x84a.google.com with SMTP id g12so241218qtc.15 for ; Tue, 17 Nov 2020 16:17:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=VzXoBRfshr313+9gIneP9I2MWmf6E3h+V7ZM0j63Np0=; b=pp3tDofiOM9GL46Apy3UaPGl248BmZDI7ijzGVyvw5nkYS7aguny0+PxDHamNv8U7a 0EchfihtL8EOuS1UonEE4MeeqJoIxMDjcRAK3DDKTMdKjzKnOc9nNJbyGsGGegvKI3b1 XE44XFvHn8awyeMaujMoLq1Hz/k6u1ZIwaqVGWgFlx7FFYtmOtNdawoq4OBoDYI1R5Dk XdtkOmboSoU/a3YtHrXik8URGPpJwPQ0o2XhXxk3HW4E/i6zb9R3EjSdldh2dtXCW4Jj gN20jcLyEXJdAfDxHlboIs7GzG0w0fblu8bCM8H/6kcahYEsxCxzm3gX9OD/3NzHAhXE mr5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=VzXoBRfshr313+9gIneP9I2MWmf6E3h+V7ZM0j63Np0=; b=Tc9bwZJxo33RHddIQwaz+xkbNCcWiDTiWbIDMVyaj6q8x5Wq4dXiihEMvgD/t9ZiBk jEgNAWZDh4gYFfY0WwWgFgb3i8Rj+qlWI1fwaEqGzMY4ZT/SsKYB/bfoND74VpO4hktM Lh+NyBB8n+fe2YWTYsy14Bdt4JH83H4GrDT6SmYd0xVhVLTiHYlFZZ743Esg+HdImNgO lTeNNfKBinrJUFA8gu4QCPemmBNv337wnALrkUTYgq8hRBViOvmh1brdlxDABGab16LP 6jY+FQqJyRRHHTmciG+MxpDfbf+NUoQ56tAWMrrqbgJgMX0HJRdKnx/9ja9Z6xrG1/C4 QOGA== X-Gm-Message-State: AOAM531YUWpPR/YHF4aJ/AsURzWZ5Lny6o7rBblA8t8N4D8jvHaooaEZ QgoodcAukPNXMAMRet1twuJR6ek= X-Google-Smtp-Source: ABdhPJw7QIa+i4andL8Xb7qok1LSXeMYuSu2YwrqgDvdSXVdanFMn+OcC63kJTrWSAMay522DjmapqQ= Sender: "sdf via sendgmr" X-Received: from sdf2.svl.corp.google.com ([2620:15c:2c4:1:7220:84ff:fe09:7732]) (user=sdf job=sendgmr) by 2002:a05:6214:12ed:: with SMTP id w13mr2276765qvv.23.1605658669986; Tue, 17 Nov 2020 16:17:49 -0800 (PST) Date: Tue, 17 Nov 2020 16:17:42 -0800 In-Reply-To: <20201118001742.85005-1-sdf@google.com> Message-Id: <20201118001742.85005-4-sdf@google.com> Mime-Version: 1.0 References: <20201118001742.85005-1-sdf@google.com> X-Mailer: git-send-email 2.29.2.299.gdc1121823c-goog Subject: [PATCH bpf-next 3/3] selftests/bpf: extend bind{4,6} programs with a call to bpf_setsockopt From: Stanislav Fomichev To: netdev@vger.kernel.org, bpf@vger.kernel.org Cc: davem@davemloft.net, ast@kernel.org, daniel@iogearbox.net, Stanislav Fomichev Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org To make sure it doesn't trigger sock_owned_by_me splat. Signed-off-by: Stanislav Fomichev --- .../testing/selftests/bpf/progs/bind4_prog.c | 31 +++++++++++++++++++ .../testing/selftests/bpf/progs/bind6_prog.c | 31 +++++++++++++++++++ 2 files changed, 62 insertions(+) diff --git a/tools/testing/selftests/bpf/progs/bind4_prog.c b/tools/testing/selftests/bpf/progs/bind4_prog.c index ff3def2ee6f9..9d1d8d642edc 100644 --- a/tools/testing/selftests/bpf/progs/bind4_prog.c +++ b/tools/testing/selftests/bpf/progs/bind4_prog.c @@ -19,8 +19,35 @@ #define SERV4_REWRITE_IP 0x7f000001U /* 127.0.0.1 */ #define SERV4_REWRITE_PORT 4444 +#ifndef IFNAMSIZ +#define IFNAMSIZ 16 +#endif + int _version SEC("version") = 1; +static __inline int bind_to_device(struct bpf_sock_addr *ctx) +{ + char veth1[IFNAMSIZ] = "test_sock_addr1"; + char veth2[IFNAMSIZ] = "test_sock_addr2"; + char missing[IFNAMSIZ] = "nonexistent_dev"; + char del_bind[IFNAMSIZ] = ""; + + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, + &veth1, sizeof(veth1))) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, + &veth2, sizeof(veth2))) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, + &missing, sizeof(missing)) != -ENODEV) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, + &del_bind, sizeof(del_bind))) + return 1; + + return 0; +} + SEC("cgroup/bind4") int bind_v4_prog(struct bpf_sock_addr *ctx) { @@ -64,6 +91,10 @@ int bind_v4_prog(struct bpf_sock_addr *ctx) if (ctx->user_ip4 != user_ip4) return 0; + /* Bind to device and unbind it. */ + if (bind_to_device(ctx)) + return 0; + ctx->user_ip4 = bpf_htonl(SERV4_REWRITE_IP); ctx->user_port = bpf_htons(SERV4_REWRITE_PORT); diff --git a/tools/testing/selftests/bpf/progs/bind6_prog.c b/tools/testing/selftests/bpf/progs/bind6_prog.c index 97686baaae65..a443927dae53 100644 --- a/tools/testing/selftests/bpf/progs/bind6_prog.c +++ b/tools/testing/selftests/bpf/progs/bind6_prog.c @@ -25,8 +25,35 @@ #define SERV6_REWRITE_IP_3 0x00000001 #define SERV6_REWRITE_PORT 6666 +#ifndef IFNAMSIZ +#define IFNAMSIZ 16 +#endif + int _version SEC("version") = 1; +static __inline int bind_to_device(struct bpf_sock_addr *ctx) +{ + char veth1[IFNAMSIZ] = "test_sock_addr1"; + char veth2[IFNAMSIZ] = "test_sock_addr2"; + char missing[IFNAMSIZ] = "nonexistent_dev"; + char del_bind[IFNAMSIZ] = ""; + + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, + &veth1, sizeof(veth1))) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, + &veth2, sizeof(veth2))) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, + &missing, sizeof(missing)) != -ENODEV) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, + &del_bind, sizeof(del_bind))) + return 1; + + return 0; +} + SEC("cgroup/bind6") int bind_v6_prog(struct bpf_sock_addr *ctx) { @@ -78,6 +105,10 @@ int bind_v6_prog(struct bpf_sock_addr *ctx) return 0; } + /* Bind to device and unbind it. */ + if (bind_to_device(ctx)) + return 0; + ctx->user_ip6[0] = bpf_htonl(SERV6_REWRITE_IP_0); ctx->user_ip6[1] = bpf_htonl(SERV6_REWRITE_IP_1); ctx->user_ip6[2] = bpf_htonl(SERV6_REWRITE_IP_2); -- 2.29.2.299.gdc1121823c-goog