From patchwork Thu Nov 12 10:48:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Abeni X-Patchwork-Id: 1398835 Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=Bozl6Shv; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CWyyh0TpGz9sRR for ; Thu, 12 Nov 2020 21:49:16 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728010AbgKLKtP (ORCPT ); Thu, 12 Nov 2020 05:49:15 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:42052 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727982AbgKLKtJ (ORCPT ); Thu, 12 Nov 2020 05:49:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605178148; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=g746v45QtIiUtPG/RYV2C5jq8Llc2K+0tGb8OpMPaFA=; b=Bozl6ShvZ6y+nmxELxdxQV/JKyvsixp+kavK5QWWLa5J7K7iLlWudQNqnLa+DjNkS/Cpgk NU5yhnxFOykrsuXqMkFdq/e3roDnNJ4d8o18B4ayAwT83emjCjzu7YxhhkrGKeIqKtdAib /b6VhNCV+hdQc6QehuuFzOzFBi3aKfs= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-526-JzE9ehlCPwWqc7pwEiRy9Q-1; Thu, 12 Nov 2020 05:49:06 -0500 X-MC-Unique: JzE9ehlCPwWqc7pwEiRy9Q-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 33C716D25F; Thu, 12 Nov 2020 10:49:05 +0000 (UTC) Received: from gerbillo.redhat.com (ovpn-112-208.ams2.redhat.com [10.36.112.208]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0CD6E5C3E1; Thu, 12 Nov 2020 10:49:03 +0000 (UTC) From: Paolo Abeni To: netdev@vger.kernel.org Cc: Eric Dumazet , mptcp@lists.01.org, Jakub Kicinski Subject: [PATCH net-next 06/13] mptcp: add accounting for pending data Date: Thu, 12 Nov 2020 11:48:04 +0100 Message-Id: <653b54ab33745d31c601ca0cd0754d181170838f.1605175834.git.pabeni@redhat.com> In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Preparation patch to track the data pending in the msk write queue. No functional change introduced here Signed-off-by: Paolo Abeni --- net/mptcp/protocol.c | 1 + net/mptcp/protocol.h | 38 +++++++++++++++++++++++++++++++++++--- 2 files changed, 36 insertions(+), 3 deletions(-) diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 691fdb2071cf..0c07bed2bd28 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -1859,6 +1859,7 @@ static int __mptcp_init_sock(struct sock *sk) __set_bit(MPTCP_SEND_SPACE, &msk->flags); INIT_WORK(&msk->work, mptcp_worker); msk->out_of_order_queue = RB_ROOT; + msk->first_pending = NULL; msk->first = NULL; inet_csk(sk)->icsk_sync_mss = mptcp_sync_mss; diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 5211564a533f..ec17f9c367c5 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -187,9 +187,10 @@ struct mptcp_pm_data { struct mptcp_data_frag { struct list_head list; u64 data_seq; - int data_len; - int offset; - int overhead; + u16 data_len; + u16 offset; + u16 overhead; + u16 already_sent; struct page *page; }; @@ -219,6 +220,7 @@ struct mptcp_sock { struct rb_root out_of_order_queue; struct list_head conn_list; struct list_head rtx_queue; + struct mptcp_data_frag *first_pending; struct list_head join_list; struct skb_ext *cached_ext; /* for the next sendmsg */ struct socket *subflow; /* outgoing connect/listener/!mp_capable */ @@ -240,6 +242,36 @@ static inline struct mptcp_sock *mptcp_sk(const struct sock *sk) return (struct mptcp_sock *)sk; } +static inline struct mptcp_data_frag *mptcp_send_head(const struct sock *sk) +{ + const struct mptcp_sock *msk = mptcp_sk(sk); + + return READ_ONCE(msk->first_pending); +} + +static inline struct mptcp_data_frag *mptcp_send_next(struct sock *sk) +{ + struct mptcp_sock *msk = mptcp_sk(sk); + struct mptcp_data_frag *cur; + + cur = msk->first_pending; + return list_is_last(&cur->list, &msk->rtx_queue) ? NULL : + list_next_entry(cur, list); +} + +static inline struct mptcp_data_frag *mptcp_pending_tail(const struct sock *sk) +{ + struct mptcp_sock *msk = mptcp_sk(sk); + + if (!msk->first_pending) + return NULL; + + if (WARN_ON_ONCE(list_empty(&msk->rtx_queue))) + return NULL; + + return list_last_entry(&msk->rtx_queue, struct mptcp_data_frag, list); +} + static inline struct mptcp_data_frag *mptcp_rtx_tail(const struct sock *sk) { struct mptcp_sock *msk = mptcp_sk(sk);