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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3A9BEC433EF for ; Tue, 19 Oct 2021 14:47:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1E0FB60EBB for ; Tue, 19 Oct 2021 14:47:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232813AbhJSOti (ORCPT ); Tue, 19 Oct 2021 10:49:38 -0400 Received: from mail-bn7nam10on2087.outbound.protection.outlook.com ([40.107.92.87]:34112 "EHLO NAM10-BN7-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S232993AbhJSOta (ORCPT ); Tue, 19 Oct 2021 10:49:30 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ZAda/mSzlt1aYjWsTY4+dkuvzvgbQAZ7hwrXihfWA/6dlpFvPFFMXrejo+r79PVH7EWce+B+U3N87sSonFQKxKze7WNKLfad50GRwOhJkp5X5AWR6/IiTOx3Tyl3wrvN6vqtF7e00NeyAjJgYgvhvAoMS9SVoxyS0Bn1e5X/fQ9PgRo33jrYugytLTgwOJBuE/DeGWwMN7j58scSwqK/H3BfImNJk9I+LJEO16B3+6RYpqi0wsIaVtoQ0XeX97id2HCP8dZajyyMWAhBsYGDv/3oEbZBOILX8Zp1/NtdZBX/0c2oAsTSXsXnMOhg3aANK9tCmgTdQTe/PcXuAyq7Zw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=auIJVvcekKeADolNmqbnZfwt4cA/dEQ2G3LBJ3YKrqQ=; b=aEqENf5KAOoU1+GNEPUylXf4LUqQ03ydKIAzyxbGWGaukB5dQi3LUQiMK+Gc+nhYSvK/3tPIE/xkrJ4Ev4tAvvKxo6PdC99Dak9klD/iHwPC7wDdpwbVhMzG1HDGDfd4tJetjKciWrNCXh5s8adTKGa4BShOavVe9GdwiePYhbYr2I5DOXHpzB1SOqo1Ice8ITVeATJhCnm2l6lCmvDrywbyNFe+IP5rxiyKMDcGAsUcbm2K+2d2KDu4pk3a1zSgmks6cVx8GGfV77sAqWwSFupmtMYMiCAcTkxdsTcb+V9Q51FvqkliCfkLzmAEvLXlcL5rZrf93mANMM6CQW5x6A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.112.32) smtp.rcpttodomain=google.com smtp.mailfrom=nvidia.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=auIJVvcekKeADolNmqbnZfwt4cA/dEQ2G3LBJ3YKrqQ=; b=qAKUAVZc0gv9YmQfzgGP4OPNFPXHfEh8R7rC+I/uupLSQvuPm3H+1ng8xOFDxEeMm4SvYiRuEe7j2MFyfwWbpDKfxd18Krfe5rz+QBSMMuIXW3Bk2vJXEnSruwl/fCIw/p4TlhEoEH7JQOSHp3930Iegn3AV1AVX8aBhxy61mUso8Lz2SsJcOXJwXkBvLgHHxWSXxsuYHESDfay1xszSkxBUuzgaRIl3QxnwPvfGTDQBUDWacW4cmz9zpvJlltXRnMXUfdzH6RdOiuMzz/mM5KPZWW5aZy2Zv983SGK9IuyKRswIIwT1JVPHKz0K35uMAxP5XjSNTC5SpN7vwGSaAg== Received: from DM5PR2201CA0002.namprd22.prod.outlook.com (2603:10b6:4:14::12) by CH0PR12MB5386.namprd12.prod.outlook.com (2603:10b6:610:d5::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4608.16; Tue, 19 Oct 2021 14:47:15 +0000 Received: from DM6NAM11FT003.eop-nam11.prod.protection.outlook.com (2603:10b6:4:14:cafe::f0) by DM5PR2201CA0002.outlook.office365.com (2603:10b6:4:14::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4608.16 via Frontend Transport; Tue, 19 Oct 2021 14:47:15 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.112.32) smtp.mailfrom=nvidia.com; google.com; dkim=none (message not signed) header.d=none;google.com; dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.112.32 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.112.32; helo=mail.nvidia.com; Received: from mail.nvidia.com (216.228.112.32) by DM6NAM11FT003.mail.protection.outlook.com (10.13.173.162) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.4608.15 via Frontend Transport; Tue, 19 Oct 2021 14:47:14 +0000 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Tue, 19 Oct 2021 07:47:13 -0700 Received: from vdi.nvidia.com (172.20.187.6) by mail.nvidia.com (172.20.187.13) with Microsoft SMTP Server id 15.0.1497.18 via Frontend Transport; Tue, 19 Oct 2021 14:47:01 +0000 From: Maxim Mikityanskiy To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh CC: Eric Dumazet , "David S. Miller" , Jakub Kicinski , Hideaki YOSHIFUJI , David Ahern , "Jesper Dangaard Brouer" , Nathan Chancellor , "Nick Desaulniers" , Brendan Jackman , Florent Revest , Joe Stringer , Lorenz Bauer , Tariq Toukan , , , , Maxim Mikityanskiy Subject: [PATCH bpf-next 00/10] New BPF helpers to accelerate synproxy Date: Tue, 19 Oct 2021 17:46:45 +0300 Message-ID: <20211019144655.3483197-1-maximmi@nvidia.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 48377360-7e95-44da-1e44-08d9930f575f X-MS-TrafficTypeDiagnostic: CH0PR12MB5386: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8882; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: nzU552Q26CMms9xobNTDp9Oam2m9QhXo8qn8V1TUpXzmro8qwBMz8q0x0FdDZigOnNnzh3ccNC+UogzjChZEzdTvtAJQl1Eg7Wpqq+U5hDdmC6w8OYlMIbww7mVW0A8QrlkvFU6x7ABAE0lSAyOY3SmKeRtGqRod3wyjJ01HrG9NQ+GkvIxZaKA/PZYoRRubG3v7MNUdE1AmiPjbxMXrwGjTNdFz3SIf94psKbuh+UEBseMtKH5sC2Vm4mwU5U15uu5zDS8e2qKVeggNqVNT/Olnh2S/tvGFYyun9CVCb6k+z8KNj0AKrNq1iwUcaKeBpS5rQKdmEAqHgKDHfQpJ2OYfxn9/2kkDWIhCYqNbe4VZjkxJkElWHEzIlHgPrqu2QvTc3RFmVePiaUbk7+Lp3NrhivUk2r+nJfq2DeuXSaBawl5pQ+pYZMKdfMr/tKYIiKUn6juZymOwXyiYMQz40HjZgkmrk4+N3tHFAHWa1HU/fhnIv9nOC1INUcrhwz6uMYcj5XOPtQbu+2gxoWh4EUehANH24dmChhkfA6DQ2G5zKFOggsKmzRTVFdltmjUJuQGND+cnu8YpleA+TURJHJ4yspZKyJKqGwLZm/sZ5vuvagD/K0jXXVR/mXVfLJiXZCqjjqP9KHQNlULlqLJIuUSP2WnnSWvzxlJA80yvRruvHkRipsIjiMvxICFxfxuurp/NmACKmzjJ7t+iZdmxEUUuCXkdANmi1rbuer1od7udKAnjPeFc5uqTrpEinkBeYfUZ2Xak+mm7Gahy7icjpO9juYl3NFHBqqFPy+hLn5M= X-Forefront-Antispam-Report: CIP:216.228.112.32;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:schybrid01.nvidia.com;CAT:NONE;SFS:(4636009)(46966006)(36840700001)(82310400003)(2906002)(186003)(8936002)(6666004)(8676002)(336012)(316002)(7416002)(36860700001)(4326008)(83380400001)(26005)(107886003)(356005)(36756003)(5660300002)(47076005)(70586007)(54906003)(7636003)(508600001)(426003)(7696005)(1076003)(70206006)(110136005)(2616005)(86362001)(966005);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Oct 2021 14:47:14.3116 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 48377360-7e95-44da-1e44-08d9930f575f X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.112.32];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT003.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5386 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org This series starts with some cleanup and bugfixing in the existing BPF helpers for SYN cookies. The second half adds new functionality that allows XDP to accelerate iptables synproxy. struct nf_conn is exposed to BPF, new helpers are added to query conntrack info by 5-tuple. The only field exposed for now is status, but it can be extended easily in the future. New helpers are added to issue SYN and timestamp cookies and to check SYN cookies without binding to a socket, which is useful in the synproxy scenario. Finally, a sample XDP and userspace program is added that show how all components work together. The XDP program uses socketless SYN cookie helpers and queries conntrack status instead of socket status. A demo script shows how to deploy the synproxy+XDP solution. The draft of the new functionality was presented on Netdev 0x15: https://netdevconf.info/0x15/session.html?Accelerating-synproxy-with-XDP Maxim Mikityanskiy (10): bpf: Use ipv6_only_sock in bpf_tcp_gen_syncookie bpf: Support dual-stack sockets in bpf_tcp_check_syncookie bpf: Use EOPNOTSUPP in bpf_tcp_check_syncookie bpf: Make errors of bpf_tcp_check_syncookie distinguishable bpf: Fix documentation of th_len in bpf_tcp_{gen,check}_syncookie bpf: Expose struct nf_conn to BPF bpf: Add helpers to query conntrack info bpf: Add helpers to issue and check SYN cookies in XDP bpf: Add a helper to issue timestamp cookies in XDP bpf: Add sample for raw syncookie helpers include/linux/bpf.h | 46 +++ include/net/tcp.h | 2 + include/uapi/linux/bpf.h | 193 ++++++++++- kernel/bpf/verifier.c | 104 +++++- net/core/filter.c | 433 +++++++++++++++++++++++- net/ipv4/syncookies.c | 60 ++++ net/ipv4/tcp_input.c | 3 +- samples/bpf/.gitignore | 1 + samples/bpf/Makefile | 3 + samples/bpf/syncookie_kern.c | 591 +++++++++++++++++++++++++++++++++ samples/bpf/syncookie_test.sh | 55 +++ samples/bpf/syncookie_user.c | 388 ++++++++++++++++++++++ scripts/bpf_doc.py | 1 + tools/include/uapi/linux/bpf.h | 193 ++++++++++- 14 files changed, 2047 insertions(+), 26 deletions(-) create mode 100644 samples/bpf/syncookie_kern.c create mode 100755 samples/bpf/syncookie_test.sh create mode 100644 samples/bpf/syncookie_user.c -- 2.30.2