From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF1D8C77B76 for ; Tue, 18 Apr 2023 12:40:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231420AbjDRMkL (ORCPT ); Tue, 18 Apr 2023 08:40:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56820 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231232AbjDRMkL (ORCPT ); Tue, 18 Apr 2023 08:40:11 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 890CE1CFAB for ; Tue, 18 Apr 2023 05:40:09 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 11752632FA for ; Tue, 18 Apr 2023 12:40:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 23BE8C433D2; Tue, 18 Apr 2023 12:40:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1681821608; bh=iJuQrTY1lO/JWYUD6M5tLQvZw7lvxAk4dK9KP1FihoE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KiNWm/T8lBWVcIwgO2xhhelDXzdMn9VdvLS+KXyDQtDjWAuWS28sIHQuQ2/niGYtn uFQvhFIcnszmMHjhidfSMNgGwiDn5aeRn/GqY8zt92bIZcoFDIbykXTxwVCeMnodO6 ErOCCl0f8Fhw0Fk1nzrHH7gf4wBJY8I5cURjm9KA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Paolo Abeni , Matthieu Baerts , Jakub Kicinski Subject: [PATCH 5.15 65/91] mptcp: use mptcp_schedule_work instead of open-coding it Date: Tue, 18 Apr 2023 14:22:09 +0200 Message-Id: <20230418120307.834929922@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230418120305.520719816@linuxfoundation.org> References: <20230418120305.520719816@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Paolo Abeni commit a5cb752b125766524c921faab1a45cc96065b0a7 upstream. Beyond reducing code duplication this also avoids scheduling the mptcp_worker on a closed socket on some edge scenarios. The addressed issue is actually older than the blamed commit below, but this fix needs it as a pre-requisite. Fixes: ba8f48f7a4d7 ("mptcp: introduce mptcp_schedule_work") Cc: stable@vger.kernel.org Signed-off-by: Paolo Abeni Reviewed-by: Matthieu Baerts Signed-off-by: Matthieu Baerts Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- net/mptcp/options.c | 5 ++--- net/mptcp/subflow.c | 18 ++++++------------ 2 files changed, 8 insertions(+), 15 deletions(-) --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -1156,9 +1156,8 @@ bool mptcp_incoming_options(struct sock */ if (TCP_SKB_CB(skb)->seq == TCP_SKB_CB(skb)->end_seq) { if (mp_opt.data_fin && mp_opt.data_len == 1 && - mptcp_update_rcv_data_fin(msk, mp_opt.data_seq, mp_opt.dsn64) && - schedule_work(&msk->work)) - sock_hold(subflow->conn); + mptcp_update_rcv_data_fin(msk, mp_opt.data_seq, mp_opt.dsn64)) + mptcp_schedule_work((struct sock *)msk); return true; } --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -360,9 +360,8 @@ void mptcp_subflow_reset(struct sock *ss tcp_send_active_reset(ssk, GFP_ATOMIC); tcp_done(ssk); - if (!test_and_set_bit(MPTCP_WORK_CLOSE_SUBFLOW, &mptcp_sk(sk)->flags) && - schedule_work(&mptcp_sk(sk)->work)) - return; /* worker will put sk for us */ + if (!test_and_set_bit(MPTCP_WORK_CLOSE_SUBFLOW, &mptcp_sk(sk)->flags)) + mptcp_schedule_work(sk); sock_put(sk); } @@ -1010,8 +1009,8 @@ static enum mapping_status get_mapping_s skb_ext_del(skb, SKB_EXT_MPTCP); return MAPPING_OK; } else { - if (updated && schedule_work(&msk->work)) - sock_hold((struct sock *)msk); + if (updated) + mptcp_schedule_work((struct sock *)msk); return MAPPING_DATA_FIN; } @@ -1114,17 +1113,12 @@ static void mptcp_subflow_discard_data(s /* sched mptcp worker to remove the subflow if no more data is pending */ static void subflow_sched_work_if_closed(struct mptcp_sock *msk, struct sock *ssk) { - struct sock *sk = (struct sock *)msk; - if (likely(ssk->sk_state != TCP_CLOSE)) return; if (skb_queue_empty(&ssk->sk_receive_queue) && - !test_and_set_bit(MPTCP_WORK_CLOSE_SUBFLOW, &msk->flags)) { - sock_hold(sk); - if (!schedule_work(&msk->work)) - sock_put(sk); - } + !test_and_set_bit(MPTCP_WORK_CLOSE_SUBFLOW, &msk->flags)) + mptcp_schedule_work((struct sock *)msk); } static bool subflow_can_fallback(struct mptcp_subflow_context *subflow)