From patchwork Thu Apr 15 23:44:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mat Martineau X-Patchwork-Id: 12206389 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 1F64AC43462 for ; Thu, 15 Apr 2021 23:45:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0271461074 for ; Thu, 15 Apr 2021 23:45:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237986AbhDOXpn (ORCPT ); Thu, 15 Apr 2021 19:45:43 -0400 Received: from mga01.intel.com ([192.55.52.88]:63174 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237035AbhDOXpd (ORCPT ); Thu, 15 Apr 2021 19:45:33 -0400 IronPort-SDR: rQ2Y0I+BDDdWYYzvg7Ny3RxD/YbexeW+nFwiBK+AoUS2d0pf1nF2YZn99hLPSLrjYmxAHO2Z/p xulG+FahDMUQ== X-IronPort-AV: E=McAfee;i="6200,9189,9955"; a="215480165" X-IronPort-AV: E=Sophos;i="5.82,226,1613462400"; d="scan'208";a="215480165" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Apr 2021 16:45:08 -0700 IronPort-SDR: gL12sDXfjrd8wB/3mbUlH5ccoRJxC3LTEeF5Eo+2Kl3J6oWr38HhdANlkf/+UkSqqyS34B2swG xKMjOG86BLdQ== X-IronPort-AV: E=Sophos;i="5.82,226,1613462400"; d="scan'208";a="461793363" Received: from mjmartin-desk2.amr.corp.intel.com (HELO mjmartin-desk2.intel.com) ([10.212.243.150]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Apr 2021 16:45:08 -0700 From: Mat Martineau To: netdev@vger.kernel.org Cc: Florian Westphal , davem@davemloft.net, kuba@kernel.org, matthieu.baerts@tessares.net, mptcp@lists.linux.dev, Paolo Abeni , Mat Martineau Subject: [PATCH net-next 08/13] mptcp: setsockopt: support SO_LINGER Date: Thu, 15 Apr 2021 16:44:57 -0700 Message-Id: <20210415234502.224225-9-mathew.j.martineau@linux.intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210415234502.224225-1-mathew.j.martineau@linux.intel.com> References: <20210415234502.224225-1-mathew.j.martineau@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Florian Westphal Similar to PRIORITY/KEEPALIVE: needs to be mirrored to all subflows. Acked-by: Paolo Abeni Signed-off-by: Florian Westphal Signed-off-by: Mat Martineau --- net/mptcp/sockopt.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index bfb9db04d26b..ee5d58747ce7 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -143,6 +143,47 @@ static int mptcp_setsockopt_sol_socket_int(struct mptcp_sock *msk, int optname, return -ENOPROTOOPT; } +static int mptcp_setsockopt_sol_socket_linger(struct mptcp_sock *msk, sockptr_t optval, + unsigned int optlen) +{ + struct mptcp_subflow_context *subflow; + struct sock *sk = (struct sock *)msk; + struct linger ling; + sockptr_t kopt; + int ret; + + if (optlen < sizeof(ling)) + return -EINVAL; + + if (copy_from_sockptr(&ling, optval, sizeof(ling))) + return -EFAULT; + + kopt = KERNEL_SOCKPTR(&ling); + ret = sock_setsockopt(sk->sk_socket, SOL_SOCKET, SO_LINGER, kopt, sizeof(ling)); + if (ret) + return ret; + + lock_sock(sk); + sockopt_seq_inc(msk); + mptcp_for_each_subflow(msk, subflow) { + struct sock *ssk = mptcp_subflow_tcp_sock(subflow); + bool slow = lock_sock_fast(ssk); + + if (!ling.l_onoff) { + sock_reset_flag(ssk, SOCK_LINGER); + } else { + ssk->sk_lingertime = sk->sk_lingertime; + sock_set_flag(ssk, SOCK_LINGER); + } + + subflow->setsockopt_seq = msk->setsockopt_seq; + unlock_sock_fast(ssk, slow); + } + + release_sock(sk); + return 0; +} + static int mptcp_setsockopt_sol_socket(struct mptcp_sock *msk, int optname, sockptr_t optval, unsigned int optlen) { @@ -182,6 +223,8 @@ static int mptcp_setsockopt_sol_socket(struct mptcp_sock *msk, int optname, case SO_RCVBUF: case SO_RCVBUFFORCE: return mptcp_setsockopt_sol_socket_int(msk, optname, optval, optlen); + case SO_LINGER: + return mptcp_setsockopt_sol_socket_linger(msk, optval, optlen); } return sock_setsockopt(sk->sk_socket, SOL_SOCKET, optname, optval, optlen);