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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , John Johansen , Paul Moore , James Morris , "Serge E. Hallyn" , Stephen Smalley , Eric Paris , Mykola Lysenko , Shuah Khan Cc: Geliang Tang , bpf@vger.kernel.org, netdev@vger.kernel.org, mptcp@lists.linux.dev, apparmor@lists.ubuntu.com, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [RFC bpf-next v7 3/6] selftests/bpf: Add mptcpify program Date: Sat, 29 Jul 2023 17:57:24 +0800 Message-Id: X-Mailer: git-send-email 2.35.3 In-Reply-To: References: X-ClientProxiedBy: SG2PR02CA0103.apcprd02.prod.outlook.com (2603:1096:4:92::19) To HE1PR0402MB3497.eurprd04.prod.outlook.com (2603:10a6:7:83::14) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: HE1PR0402MB3497:EE_|GVXPR04MB9733:EE_ X-MS-Office365-Filtering-Correlation-Id: a2f02adb-beb1-4980-7273-08db901a406f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:HE1PR0402MB3497.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230028)(376002)(346002)(39860400002)(366004)(396003)(136003)(451199021)(316002)(8676002)(110136005)(478600001)(38100700002)(66556008)(921005)(86362001)(5660300002)(4326008)(66946007)(66476007)(6486002)(6512007)(6666004)(186003)(6506007)(26005)(7416002)(7406005)(8936002)(2906002)(41300700001)(44832011)(2616005)(36756003)(83380400001);DIR:OUT;SFP:1101; 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It will be hooked in update_socket_protocol(). Signed-off-by: Geliang Tang --- tools/testing/selftests/bpf/progs/mptcpify.c | 25 ++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/mptcpify.c diff --git a/tools/testing/selftests/bpf/progs/mptcpify.c b/tools/testing/selftests/bpf/progs/mptcpify.c new file mode 100644 index 000000000000..9cf1febe982d --- /dev/null +++ b/tools/testing/selftests/bpf/progs/mptcpify.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2023, SUSE. */ + +#include +#include + +char _license[] SEC("license") = "GPL"; + +#define AF_INET 2 +#define AF_INET6 10 +#define SOCK_STREAM 1 +#define IPPROTO_TCP 6 +#define IPPROTO_MPTCP 262 + +SEC("fmod_ret/update_socket_protocol") +int BPF_PROG(mptcpify, int family, int type, int protocol) +{ + if ((family == AF_INET || family == AF_INET6) && + type == SOCK_STREAM && + (!protocol || protocol == IPPROTO_TCP)) { + return IPPROTO_MPTCP; + } + + return protocol; +}