From patchwork Tue Aug 24 01:05:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mat Martineau X-Patchwork-Id: 502194 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=-16.7 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 53E47C4338F for ; Tue, 24 Aug 2021 01:06:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3948260E75 for ; Tue, 24 Aug 2021 01:06:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234818AbhHXBGs (ORCPT ); Mon, 23 Aug 2021 21:06:48 -0400 Received: from mga18.intel.com ([134.134.136.126]:62120 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234760AbhHXBGe (ORCPT ); Mon, 23 Aug 2021 21:06:34 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10085"; a="204346751" X-IronPort-AV: E=Sophos;i="5.84,346,1620716400"; d="scan'208";a="204346751" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Aug 2021 18:05:50 -0700 X-IronPort-AV: E=Sophos;i="5.84,346,1620716400"; d="scan'208";a="515224400" Received: from mjmartin-desk2.amr.corp.intel.com (HELO mjmartin-desk2.intel.com) ([10.209.11.16]) by fmsmga004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Aug 2021 18:05:49 -0700 From: Mat Martineau To: netdev@vger.kernel.org Cc: Yonglong Li , davem@davemloft.net, kuba@kernel.org, matthieu.baerts@tessares.net, mptcp@lists.linux.dev, Geliang Tang , Mat Martineau Subject: [PATCH net-next 2/6] mptcp: make MPTCP_ADD_ADDR_SIGNAL and MPTCP_ADD_ADDR_ECHO separate Date: Mon, 23 Aug 2021 18:05:40 -0700 Message-Id: <20210824010544.68600-3-mathew.j.martineau@linux.intel.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210824010544.68600-1-mathew.j.martineau@linux.intel.com> References: <20210824010544.68600-1-mathew.j.martineau@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Yonglong Li Use MPTCP_ADD_ADDR_SIGNAL only for the action of sending ADD_ADDR, and use MPTCP_ADD_ADDR_ECHO only for the action of sending ADD_ADDR echo. Use msk->pm.local to save the announced ADD_ADDR address only, and reuse msk->pm.remote to save the announced ADD_ADDR_ECHO address. To prepare for the next patch. Co-developed-by: Geliang Tang Signed-off-by: Geliang Tang Signed-off-by: Yonglong Li Signed-off-by: Mat Martineau --- net/mptcp/pm.c | 16 ++++++++++------ net/mptcp/pm_netlink.c | 4 ++-- net/mptcp/protocol.h | 6 ++++++ 3 files changed, 18 insertions(+), 8 deletions(-) diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index 24e2f6f6178b..b1727cef1cfd 100644 --- a/net/mptcp/pm.c +++ b/net/mptcp/pm.c @@ -20,19 +20,23 @@ int mptcp_pm_announce_addr(struct mptcp_sock *msk, { u8 add_addr = READ_ONCE(msk->pm.addr_signal); - pr_debug("msk=%p, local_id=%d", msk, addr->id); + pr_debug("msk=%p, local_id=%d, echo=%d", msk, addr->id, echo); lockdep_assert_held(&msk->pm.lock); - if (add_addr) { - pr_warn("addr_signal error, add_addr=%d", add_addr); + if (add_addr & + (echo ? BIT(MPTCP_ADD_ADDR_ECHO) : BIT(MPTCP_ADD_ADDR_SIGNAL))) { + pr_warn("addr_signal error, add_addr=%d, echo=%d", add_addr, echo); return -EINVAL; } - msk->pm.local = *addr; - add_addr |= BIT(MPTCP_ADD_ADDR_SIGNAL); - if (echo) + if (echo) { + msk->pm.remote = *addr; add_addr |= BIT(MPTCP_ADD_ADDR_ECHO); + } else { + msk->pm.local = *addr; + add_addr |= BIT(MPTCP_ADD_ADDR_SIGNAL); + } if (addr->family == AF_INET6) add_addr |= BIT(MPTCP_ADD_ADDR_IPV6); if (addr->port) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 480f43ec1bfb..d8dfd872a6dd 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -317,14 +317,14 @@ static void mptcp_pm_add_timer(struct timer_list *timer) if (!entry->addr.id) return; - if (mptcp_pm_should_add_signal(msk)) { + if (mptcp_pm_should_add_signal_addr(msk)) { sk_reset_timer(sk, timer, jiffies + TCP_RTO_MAX / 8); goto out; } spin_lock_bh(&msk->pm.lock); - if (!mptcp_pm_should_add_signal(msk)) { + if (!mptcp_pm_should_add_signal_addr(msk)) { pr_debug("retransmit ADD_ADDR id=%d", entry->addr.id); mptcp_pm_announce_addr(msk, &entry->addr, false); mptcp_pm_add_addr_send_ack(msk); diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 40bc9d31e1fa..3c388c1a9de4 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -747,6 +747,12 @@ void mptcp_event_addr_announced(const struct mptcp_sock *msk, const struct mptcp void mptcp_event_addr_removed(const struct mptcp_sock *msk, u8 id); static inline bool mptcp_pm_should_add_signal(struct mptcp_sock *msk) +{ + return READ_ONCE(msk->pm.addr_signal) & + (BIT(MPTCP_ADD_ADDR_SIGNAL) | BIT(MPTCP_ADD_ADDR_ECHO)); +} + +static inline bool mptcp_pm_should_add_signal_addr(struct mptcp_sock *msk) { return READ_ONCE(msk->pm.addr_signal) & BIT(MPTCP_ADD_ADDR_SIGNAL); }