From nobody Wed Sep 17 19:40:14 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8CBA91F1921 for ; Wed, 30 Jul 2025 07:23:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753860180; cv=none; b=pbt61iPbGKhC5+o+Bg7HfKSSiW0u4sega5oD9Xskm0hDnRtizhf5/8IXu7tnd3bOLrt965v2SXksa1272LTc3JlXWGGQWI0jiJUuHSXIGmbNKzQUKtbP6AVxTcMKCH7rARlAWQ2yvPrfNpMnRK8K9sahoto9FyyqDQ5bfLp1nKM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753860180; c=relaxed/simple; bh=1NHsVCQEBPxU9SneQfXnxPcuLRPYwsuZLkpyI39muCY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lyCGH1bnI5wGqf5fL1KUpAZYYwruNaiUJKa8Z6I2vC7/khnxPeshrnhfFwcg/4RQVZOM0dnVfMbCTaIFkczG+MBiN0XoKdC1hkWWTQOjzZquV4TdkmzV6rIAu6F99/TU1J/w/zEIPPg6Gw1EgrzyGeF+A+cTCH3Q76kmptcaKa4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XwHAkLkN; 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="XwHAkLkN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77007C4CEF6; Wed, 30 Jul 2025 07:22:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753860180; bh=1NHsVCQEBPxU9SneQfXnxPcuLRPYwsuZLkpyI39muCY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XwHAkLkNRKTvinxIWZPoY/nkqyrrZ0mrBdhlnk2onedOO5VkcaLzvwaQZClU2IoBc 881AE4Bbr8C46e54re2wjzC5RrM63KZGL6EQlEcrccu/isfLOlu9zv/uHUccw2juk5 UxtLIp8vHoSe9l7YMc0FxraevBUYfsFf3E1q2jJ6xdBhDF4+IaI+RazTrKLJ1hdVEE Cp9mJ7aOVpbq+RpmcjuLmLP4frGLcj3Hp7LYyOe3U31vLL3a5Zbw+PEnOwTzVe3q74 yN8mwGiV3xlOdCfoSLEG9uX+WcYQvIGeUV9Wd95sSeIu5R7O3/mtECmThUhkKr0nlR JsypxT/RHvSWg== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next 3/3] selftests: mptcp: add TCP_MD5SIG tests in sockopt Date: Wed, 30 Jul 2025 15:22:45 +0800 Message-ID: <42b549e570e3505028f96509196c2623cab93299.1753859907.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 Add test cases for TCP_MD5SIG and TCP_MD5SIG_EXT socket options: - Enable CONFIG_TCP_MD5SIG in test config - Implement test functions for both options: - test_tcp_md5sig_sockopt() - sets basic MD5 key - test_tcp_md5sig_ext_sockopt() - sets extended MD5 with flags - Tests run on both IPv4/IPv6 during server setup Signed-off-by: Geliang Tang --- tools/testing/selftests/net/mptcp/config | 1 + .../selftests/net/mptcp/mptcp_sockopt.c | 67 +++++++++++++++++++ 2 files changed, 68 insertions(+) diff --git a/tools/testing/selftests/net/mptcp/config b/tools/testing/selft= ests/net/mptcp/config index 968d440c03fe..d9022261b6f8 100644 --- a/tools/testing/selftests/net/mptcp/config +++ b/tools/testing/selftests/net/mptcp/config @@ -34,3 +34,4 @@ CONFIG_NET_ACT_PEDIT=3Dm CONFIG_NET_CLS_ACT=3Dy CONFIG_NET_CLS_FW=3Dm CONFIG_NET_SCH_INGRESS=3Dm +CONFIG_TCP_MD5SIG=3Dy diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.c b/tools/test= ing/selftests/net/mptcp/mptcp_sockopt.c index 9934a68df237..b99d7bce96ee 100644 --- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.c +++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.c @@ -25,6 +25,7 @@ #include =20 #include +#include =20 static int pf =3D AF_INET; =20 @@ -127,6 +128,15 @@ struct so_state { #define MIN(a, b) ((a) < (b) ? (a) : (b)) #endif =20 +struct tcp_md5sig_ext { + struct __kernel_sockaddr_storage tcpm_addr; + unsigned short __tcpm_pad1; + unsigned short tcpm_keylen; + unsigned char tcpm_key[TCP_MD5SIG_MAXKEYLEN]; + unsigned int tcpm_flags; + unsigned int tcpm_ifindex; +}; + static void die_perror(const char *msg) { perror(msg); @@ -697,6 +707,60 @@ static int xaccept(int s) return fd; } =20 +static void test_tcp_md5sig_sockopt(int fd) +{ + const char *peer_ip =3D (pf =3D=3D AF_INET) ? "127.0.0.1" : "::1"; + const char *key =3D "0123456789"; + size_t key_len =3D strlen(key); + struct tcp_md5sig md5sig; + struct sockaddr_in *addr; + + memset(&md5sig, 0, sizeof(md5sig)); + addr =3D (struct sockaddr_in *)&md5sig.tcpm_addr; + addr->sin_family =3D pf; + + if (inet_pton(pf, peer_ip, &addr->sin_addr) !=3D 1) + die_perror("inet_pton failed"); + + if (key_len > sizeof(md5sig.tcpm_key)) + die_perror("Key too long\n"); + + memcpy(md5sig.tcpm_key, key, key_len); + md5sig.tcpm_keylen =3D key_len; + + if (setsockopt(fd, IPPROTO_TCP, TCP_MD5SIG, &md5sig, sizeof(md5sig))) + die_perror("setsockopt(TCP_MD5SIG) failed"); +} + +static void test_tcp_md5sig_ext_sockopt(int sockfd) +{ + const char *peer_ip =3D (pf =3D=3D AF_INET) ? "127.0.0.1" : "::1"; + const char *key =3D "0123456789"; + size_t key_len =3D strlen(key); + struct tcp_md5sig_ext md5ext; + struct sockaddr_in *addr; + int ifindex =3D 2; + + memset(&md5ext, 0, sizeof(md5ext)); + addr =3D (struct sockaddr_in *)&md5ext.tcpm_addr; + addr->sin_family =3D pf; + + if (inet_pton(pf, peer_ip, &addr->sin_addr) !=3D 1) + die_perror("inet_pton failed"); + + if (key_len > TCP_MD5SIG_MAXKEYLEN) + die_perror("Key too long\n"); + + memcpy(md5ext.tcpm_key, key, key_len); + md5ext.tcpm_keylen =3D key_len; + + md5ext.tcpm_ifindex =3D ifindex; + md5ext.tcpm_flags =3D TCP_MD5SIG_FLAG_IFINDEX; + + if (setsockopt(sockfd, IPPROTO_TCP, TCP_MD5SIG_EXT, &md5ext, sizeof(md5ex= t))) + die_perror("setsockopt(TCP_MD5SIG_EXT) failed"); +} + static int server(int pipefd) { int fd =3D -1, r; @@ -721,6 +785,9 @@ static int server(int pipefd) =20 process_one_client(r, pipefd); =20 + test_tcp_md5sig_sockopt(fd); + test_tcp_md5sig_ext_sockopt(fd); + return 0; } =20 --=20 2.48.1