From patchwork Tue Nov 3 19:05:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mat Martineau X-Patchwork-Id: 11878855 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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 C6BCDC388F7 for ; Tue, 3 Nov 2020 19:05:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C67020786 for ; Tue, 3 Nov 2020 19:05:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729617AbgKCTF3 (ORCPT ); Tue, 3 Nov 2020 14:05:29 -0500 Received: from mga12.intel.com ([192.55.52.136]:49639 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729613AbgKCTF2 (ORCPT ); Tue, 3 Nov 2020 14:05:28 -0500 IronPort-SDR: xy9SJ4OQBGbFntLqIGwvhUKcgzeuG+61qf4/1CJF17rEjbUfSpOCr6FAaL4c1yt/qvz/ShA7De au77Vmj+TdBg== X-IronPort-AV: E=McAfee;i="6000,8403,9794"; a="148386935" X-IronPort-AV: E=Sophos;i="5.77,448,1596524400"; d="scan'208";a="148386935" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Nov 2020 11:05:15 -0800 IronPort-SDR: AvJXYLXWPZreNw+r5U8kkIXnxG4IJJQVE8iNAOgCwtNmOuZ4vYF4XpUS8tehVFaJFEJHHAuarD 7r8vT3wwgHIw== X-IronPort-AV: E=Sophos;i="5.77,448,1596524400"; d="scan'208";a="352430151" Received: from mjmartin-nuc02.amr.corp.intel.com ([10.251.18.188]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Nov 2020 11:05:14 -0800 From: Mat Martineau To: netdev@vger.kernel.org Cc: Geliang Tang , mptcp@lists.01.org, kuba@kernel.org, davem@davemloft.net, Matthieu Baerts , Paolo Abeni , Mat Martineau Subject: [PATCH net-next v2 5/7] mptcp: add a new sysctl add_addr_timeout Date: Tue, 3 Nov 2020 11:05:07 -0800 Message-Id: <20201103190509.27416-6-mathew.j.martineau@linux.intel.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201103190509.27416-1-mathew.j.martineau@linux.intel.com> References: <20201103190509.27416-1-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: Geliang Tang This patch added a new sysctl, named add_addr_timeout, to control the timeout value (in seconds) of the ADD_ADDR retransmission. Suggested-by: Matthieu Baerts Suggested-by: Paolo Abeni Acked-by: Paolo Abeni Reviewed-by: Matthieu Baerts Signed-off-by: Geliang Tang Signed-off-by: Mat Martineau --- net/mptcp/ctrl.c | 14 ++++++++++++++ net/mptcp/pm_netlink.c | 8 ++++++-- net/mptcp/protocol.h | 1 + 3 files changed, 21 insertions(+), 2 deletions(-) diff --git a/net/mptcp/ctrl.c b/net/mptcp/ctrl.c index 54b888f94009..96ba616f59bf 100644 --- a/net/mptcp/ctrl.c +++ b/net/mptcp/ctrl.c @@ -18,6 +18,7 @@ struct mptcp_pernet { struct ctl_table_header *ctl_table_hdr; int mptcp_enabled; + unsigned int add_addr_timeout; }; static struct mptcp_pernet *mptcp_get_pernet(struct net *net) @@ -30,6 +31,11 @@ int mptcp_is_enabled(struct net *net) return mptcp_get_pernet(net)->mptcp_enabled; } +unsigned int mptcp_get_add_addr_timeout(struct net *net) +{ + return mptcp_get_pernet(net)->add_addr_timeout; +} + static struct ctl_table mptcp_sysctl_table[] = { { .procname = "enabled", @@ -40,12 +46,19 @@ static struct ctl_table mptcp_sysctl_table[] = { */ .proc_handler = proc_dointvec, }, + { + .procname = "add_addr_timeout", + .maxlen = sizeof(unsigned int), + .mode = 0644, + .proc_handler = proc_dointvec_jiffies, + }, {} }; static void mptcp_pernet_set_defaults(struct mptcp_pernet *pernet) { pernet->mptcp_enabled = 1; + pernet->add_addr_timeout = TCP_RTO_MAX; } static int mptcp_pernet_new_table(struct net *net, struct mptcp_pernet *pernet) @@ -61,6 +74,7 @@ static int mptcp_pernet_new_table(struct net *net, struct mptcp_pernet *pernet) } table[0].data = &pernet->mptcp_enabled; + table[1].data = &pernet->add_addr_timeout; hdr = register_net_sysctl(net, MPTCP_SYSCTL_PATH, table); if (!hdr) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 0d6f3d912891..ed60538df7b2 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -206,6 +206,7 @@ static void mptcp_pm_add_timer(struct timer_list *timer) struct mptcp_pm_add_entry *entry = from_timer(entry, timer, add_timer); struct mptcp_sock *msk = entry->sock; struct sock *sk = (struct sock *)msk; + struct net *net = sock_net(sk); pr_debug("msk=%p", msk); @@ -232,7 +233,8 @@ static void mptcp_pm_add_timer(struct timer_list *timer) } if (entry->retrans_times < ADD_ADDR_RETRANS_MAX) - sk_reset_timer(sk, timer, jiffies + TCP_RTO_MAX); + sk_reset_timer(sk, timer, + jiffies + mptcp_get_add_addr_timeout(net)); spin_unlock_bh(&msk->pm.lock); @@ -264,6 +266,7 @@ static bool mptcp_pm_alloc_anno_list(struct mptcp_sock *msk, { struct mptcp_pm_add_entry *add_entry = NULL; struct sock *sk = (struct sock *)msk; + struct net *net = sock_net(sk); if (lookup_anno_list_by_saddr(msk, &entry->addr)) return false; @@ -279,7 +282,8 @@ static bool mptcp_pm_alloc_anno_list(struct mptcp_sock *msk, add_entry->retrans_times = 0; timer_setup(&add_entry->add_timer, mptcp_pm_add_timer, 0); - sk_reset_timer(sk, &add_entry->add_timer, jiffies + TCP_RTO_MAX); + sk_reset_timer(sk, &add_entry->add_timer, + jiffies + mptcp_get_add_addr_timeout(net)); return true; } diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 13ab89dc1914..278c88c405e8 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -362,6 +362,7 @@ mptcp_subflow_get_mapped_dsn(const struct mptcp_subflow_context *subflow) } int mptcp_is_enabled(struct net *net); +unsigned int mptcp_get_add_addr_timeout(struct net *net); void mptcp_subflow_fully_established(struct mptcp_subflow_context *subflow, struct mptcp_options_received *mp_opt); bool mptcp_subflow_data_available(struct sock *sk);