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 X-Spam-Level: X-Spam-Status: No, score=-12.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 57889C2D0A3 for ; Thu, 29 Oct 2020 07:56:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0990521534 for ; Thu, 29 Oct 2020 07:56:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="vMjbRXCH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727215AbgJ2HYq (ORCPT ); Thu, 29 Oct 2020 03:24:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55372 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726760AbgJ2HYf (ORCPT ); Thu, 29 Oct 2020 03:24:35 -0400 Received: from mail-pf1-x442.google.com (mail-pf1-x442.google.com [IPv6:2607:f8b0:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EE321C08EA75; Thu, 29 Oct 2020 00:06:48 -0700 (PDT) Received: by mail-pf1-x442.google.com with SMTP id 13so1580325pfy.4; Thu, 29 Oct 2020 00:06:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=ccnTdRi301/TdXAApcTfL39DiVa+OmKFQ/8+9UDuAeU=; b=vMjbRXCHxjly4KBHeowv4WArdSpuEQVziNdCx0WvZiXH91WLUMi2VPNoxisdyXj6Se YxKaaoCuyK8j7qPh3Bbu9nzLOtpHZH6QsJTRcdhiNSgfFLjTXTpykqv943ZKobVnmGLl TIg4g1AEErNrpGrTUZdJ6VuaDMq1fHOKlxzrjETvgL5txFY74pL0I+Ptyft8DfyARpzj tudlNc1PgwgThMQ1yjJVE0eq/CeS3vqzxThM7XAyj/qH+Q9zhUsC9zZdEe/yE2iCOQKy A5lHU52ngIuZgNXQgvTJQJ3X+me3MGcwezKDUfBV15gHssoGskHvtkdXuVZWH2z/HQIP q9+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=ccnTdRi301/TdXAApcTfL39DiVa+OmKFQ/8+9UDuAeU=; b=N4ettp2P6JRI1eqyP1zAfULMYonIst52TpOPiFfJwbJ+bQ5ps0Vn/RdyDrtpSkR93r oPdarqEjVh3kA6njA0+Oza8zPcsliJQgKoRrt87eetaMR51yiNKQ1Sdc+iAjkOaFMKih kft9/ncoWBYywStfhVG83YEri938OKsPVcXrtdBWEi00rFfLay+3yUanwRavQvi/Eud+ D+E6xxfl4Z9ivcvZSLpb+jbYSaJxbn49XWNKzqgPD/1L6iMyRNRPXefZzOgcZfCkWhIt CoZEnQwWOrC6knaN8qDXM1B9XxRJLTKZ8Htqzl6T7/rxMgh+X0TploIdJvrjYtlhryns 7fEQ== X-Gm-Message-State: AOAM5307AzlnY/nbpEbjYs0bWnft+rwNwhn4wkn3rlQzD7e/5Ur83ewy +CmvoGGUJAxYCruWZh6S0wPvDQFirRM= X-Google-Smtp-Source: ABdhPJzWJNk9pqOOpHM5Tpeq/a3wxMwoJ5GeAg7fRTEFsTVNZMlzMGlF6YUN19A34felxGZueBtb+g== X-Received: by 2002:a17:90b:460e:: with SMTP id ia14mr2802328pjb.7.1603955208288; Thu, 29 Oct 2020 00:06:48 -0700 (PDT) Received: from localhost ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id z30sm1788018pfq.87.2020.10.29.00.06.47 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 29 Oct 2020 00:06:47 -0700 (PDT) From: Xin Long To: network dev , linux-sctp@vger.kernel.org Cc: Marcelo Ricardo Leitner , Neil Horman , Michael Tuexen , davem@davemloft.net, Jakub Kicinski , gnault@redhat.com, pabeni@redhat.com, willemdebruijn.kernel@gmail.com Subject: [PATCHv5 net-next 11/16] sctp: call sk_setup_caps in sctp_packet_transmit instead Date: Thu, 29 Oct 2020 15:05:05 +0800 Message-Id: X-Mailer: git-send-email 2.1.0 In-Reply-To: <1032fd094f807a870ca965e8355daf0be068008d.1603955041.git.lucien.xin@gmail.com> References: <48053c3bf48a46899bc0130dc43adca1e6925581.1603955040.git.lucien.xin@gmail.com> <4f439ed717442a649ba78dc0efc6f121208a9995.1603955040.git.lucien.xin@gmail.com> <1cfd9ca0154d35389b25f68457ea2943a19e7da2.1603955040.git.lucien.xin@gmail.com> <3c26801d36575d0e9c9bd260e6c1f1b67e4b721e.1603955040.git.lucien.xin@gmail.com> <279d266bc34ebc439114f39da983dc08845ea37a.1603955040.git.lucien.xin@gmail.com> <066bbdcf83188bbc62b6c458f2a0fd8f06f41640.1603955040.git.lucien.xin@gmail.com> <2b2703eb6a2cc84b7762ee7484a9a57408db162b.1603955040.git.lucien.xin@gmail.com> <1032fd094f807a870ca965e8355daf0be068008d.1603955041.git.lucien.xin@gmail.com> In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: linux-sctp@vger.kernel.org sk_setup_caps() was originally called in Commit 90017accff61 ("sctp: Add GSO support"), as: "We have to refresh this in case we are xmiting to more than one transport at a time" This actually happens in the loop of sctp_outq_flush_transports(), and it shouldn't be tied to gso, so move it out of gso part and before sctp_packet_pack(). Signed-off-by: Xin Long --- net/sctp/output.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/net/sctp/output.c b/net/sctp/output.c index 1441eaf..fb16500 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -508,12 +508,6 @@ static int sctp_packet_pack(struct sctp_packet *packet, sizeof(struct inet6_skb_parm))); skb_shinfo(head)->gso_segs = pkt_count; skb_shinfo(head)->gso_size = GSO_BY_FRAGS; - rcu_read_lock(); - if (skb_dst(head) != tp->dst) { - dst_hold(tp->dst); - sk_setup_caps(sk, tp->dst); - } - rcu_read_unlock(); goto chksum; } @@ -593,6 +587,13 @@ int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp) } skb_dst_set(head, dst); + rcu_read_lock(); + if (__sk_dst_get(sk) != tp->dst) { + dst_hold(tp->dst); + sk_setup_caps(sk, tp->dst); + } + rcu_read_unlock(); + /* pack up chunks */ pkt_count = sctp_packet_pack(packet, head, gso, gfp); if (!pkt_count) { -- 2.1.0