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smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NlvWHR6G; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="NlvWHR6G" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 644D1C4CEF1; Tue, 19 Aug 2025 09:00:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755594037; bh=huId9eEblWu60Eo75YpwbQrUGA7hIi+zvdlRHKWU2RU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NlvWHR6GbN+Z4M823HCej1c+sv0g+PoQzL8K9SkpZiAjEIFkCK8K2FSfeELinj9qx jlKpbKyfHiSsZqxj4GPQx9AaF3E8J2XmdsKOvEkD/tkuWvW5G7wejWV9HZmY9g6GPC XorHNzaNIK+G1cJYKuzPGLO+eK+K5ULnaxqvn10itqrsvppWyItsTrQTcu8rywbmxj qQR1AGIl+R9F+rqEoFfiiyWvi9/6mutsp2ZnWT3858F05qjQDrqF48v2Gsj6QpYOON IUJlS95WHHuyOKxMozq1QU2OUxSrkb3yenBCVqv1A8ORHGnniUTKMiiU5nEtRJX60R +2tUphU1mMgSQ== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next 08/11] selftests: mptcp: sockopt: add IP_TRANSPARENT tests Date: Tue, 19 Aug 2025 17:00:14 +0800 Message-ID: <754dcbcd5da7af5eb8a44393002f74864fbb8830.1755592822.git.tanggeliang@kylinos.cn> X-Mailer: git-send-email 2.48.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Geliang Tang Implement tests for transparent socket options: - IP_TRANSPARENT (IPv4) and IPV6_TRANSPARENT (IPv6) - Setsockopt and getsockopt helpers - State verification after setting - IPv4/IPv6 coverage in test script Signed-off-by: Geliang Tang --- .../selftests/net/mptcp/mptcp_sockopt.c | 37 +++++++++++++++++++ .../selftests/net/mptcp/mptcp_sockopt.sh | 8 ++++ 2 files changed, 45 insertions(+) diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.c b/tools/test= ing/selftests/net/mptcp/mptcp_sockopt.c index 1e7cacdebc72..fe54c333e455 100644 --- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.c +++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.c @@ -256,6 +256,21 @@ static void do_setsockopt_freebind(int fd) perror("setsockopt(IP_FREEBIND)"); } =20 +static void do_setsockopt_transparent(int fd) +{ + int optname =3D IP_TRANSPARENT; + int level =3D SOL_IP; + int enable =3D 1; + + if (pf =3D=3D AF_INET6) { + level =3D SOL_IPV6; + optname =3D IPV6_TRANSPARENT; + } + + if (setsockopt(fd, level, optname, &enable, sizeof(enable))) + perror("setsockopt(IP_TRANSPARENT)"); +} + static void do_setsockopts(int fd) { do_setsockopt_reuseaddr(fd); @@ -264,6 +279,7 @@ static void do_setsockopts(int fd) do_setsockopt_bindtoifindex(fd); do_setsockopt_tos(fd); do_setsockopt_freebind(fd); + do_setsockopt_transparent(fd); } =20 static int sock_listen_mptcp(const char * const listenaddr, @@ -739,6 +755,25 @@ static void do_getsockopt_freebind(int fd) assert(enable =3D=3D 1); } =20 +static void do_getsockopt_transparent(int fd) +{ + int optname =3D IP_FREEBIND; + int level =3D SOL_IP; + socklen_t len; + int enable; + + if (pf =3D=3D AF_INET6) { + level =3D SOL_IPV6; + optname =3D IPV6_FREEBIND; + } + + len =3D sizeof(enable); + if (getsockopt(fd, level, optname, &enable, &len)) + die_perror("getsockopt(IP_TRANSPARENT)"); + + assert(enable =3D=3D 1); +} + static void do_getsockopts(struct so_state *s, int fd, size_t r, size_t w) { do_getsockopt_mptcp_info(s, fd, w); @@ -761,6 +796,8 @@ static void do_getsockopts(struct so_state *s, int fd, = size_t r, size_t w) do_getsockopt_tos(fd); =20 do_getsockopt_freebind(fd); + + do_getsockopt_transparent(fd); } =20 static void connect_one_server(int fd, int pipefd) diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh b/tools/tes= ting/selftests/net/mptcp/mptcp_sockopt.sh index b5054533872b..ed73ad7bba66 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh @@ -297,6 +297,10 @@ do_mptcp_sockopt_tests() mptcp_lib_pr_ok mptcp_lib_result_pass "IP_FREEBIND sockopt v4" =20 + print_title "IP_TRANSPARENT sockopt v4" + mptcp_lib_pr_ok + mptcp_lib_result_pass "IP_TRANSPARENT sockopt v4" + ip netns exec "$ns_sbox" ./mptcp_sockopt -6 lret=3D$? =20 @@ -335,6 +339,10 @@ do_mptcp_sockopt_tests() print_title "IPV6_FREEBIND sockopt v6" mptcp_lib_pr_ok mptcp_lib_result_pass "IPV6_FREEBIND sockopt v6" + + print_title "IPV6_TRANSPARENT sockopt v6" + mptcp_lib_pr_ok + mptcp_lib_result_pass "IPV6_TRANSPARENT sockopt v6" } =20 run_tests() --=20 2.48.1