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 C5F76C43467 for ; Thu, 8 Oct 2020 09:50:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7007320725 for ; Thu, 8 Oct 2020 09:50:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="QrPNjt0R" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729232AbgJHJuW (ORCPT ); Thu, 8 Oct 2020 05:50:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41866 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725887AbgJHJuV (ORCPT ); Thu, 8 Oct 2020 05:50:21 -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 C3BC9C061755; Thu, 8 Oct 2020 02:50:21 -0700 (PDT) Received: by mail-pf1-x442.google.com with SMTP id e10so3566607pfj.1; Thu, 08 Oct 2020 02:50:21 -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=eHpfgVHKRbBtzp3y6GtZn9feVuuP00yNLAtwJLjoQHM=; b=QrPNjt0RO8DT5b3ueEDCjwQvh4/pPPUm5KptSzNpUva9O9Gz7bXkCdCi6XhqM9HWmY Uyd89mkV6WQabi2OOCXTh8bIuMPnuTVqS/nRHike2RVZbIfztY/BIm4GkzrWnk7WZ9wX zyPva/0GiObrsWdKNwg+/vqLkfDIU837PsiTyjQsaBjc5Nvg4o4vY1erd5XUJ3k0mwpS fqec49mv7PNgC14l+IuYo6grm6B/O1H345qr23+e1Cbc7+U+0SxjfP9Uhe4zOEm3CwqT NAVmoFuhg5j24Yd+ia9esoZlQLo+qyv8+ntz+n3TRr11BogKlBX9h7Dgi1bzlNKxsN/5 bFhA== 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=eHpfgVHKRbBtzp3y6GtZn9feVuuP00yNLAtwJLjoQHM=; b=CnnoMzGeSfdMIg7/nBD8iAAypMy4dh2sMxVFGnVc9MeVt2t2cERnetaqIKHJ8mepNG goeD2HmbhPAhK4bRs8BEddrk869uMUrIdtPso1jnV7C2tVNWwqnfTmGf9faHSA1jZiHJ huCzdGM9h5wB0xDl1lXOOkHUjMHO8i2AC111qyIIlh7W5AD0BZ24FCDAekHP7mRfcuIK ggv/MjtV8262X381pM6K7HcYacc/3Mx4W7h785S9d1WOn1aYMGd/yYMRbZTRn8tMPjmP QTx4jioHhueHa/iqFVY57yZwQN4ArFCmlHShgUPoBAND5SbuxbPIYiSOqKofiN8iuUSD xprw== X-Gm-Message-State: AOAM533s+zJG3iAZqNjB4Riyk2/OWPO/n8PmNUIMy9dAP2MS5yhI4lTq 2xZK8P2TJNNR2hHGtCps9Aa8O6rtGpY= X-Google-Smtp-Source: ABdhPJwjjz3XPgKnnUFvCBYB3q0QoS4/vwzxZYzS87QbKM/0wo23sACHz2wVP9sOEcUi4jP/EICGlw== X-Received: by 2002:a17:90a:d57:: with SMTP id 23mr7201642pju.232.1602150621092; Thu, 08 Oct 2020 02:50:21 -0700 (PDT) Received: from localhost ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id y7sm6428069pgk.73.2020.10.08.02.50.19 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 08 Oct 2020 02:50:20 -0700 (PDT) From: Xin Long To: network dev , linux-sctp@vger.kernel.org Cc: Marcelo Ricardo Leitner , Neil Horman , Michael Tuexen , davem@davemloft.net Subject: [PATCHv2 net-next 15/17] sctp: add the error cause for new encapsulation port restart Date: Thu, 8 Oct 2020 17:48:11 +0800 Message-ID: <8815067eea44ffd7274b0038e48c2618c2e77916.1602150362.git.lucien.xin@gmail.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <5c0e9cf835f54c11f7e3014cab926bf10a47298d.1602150362.git.lucien.xin@gmail.com> References: <052acb63198c44df41c5db17f8397eeb7c8bacfe.1602150362.git.lucien.xin@gmail.com> <483d9eec159b22172fe04dacd58d7f88dfc2f301.1602150362.git.lucien.xin@gmail.com> <17cab00046ea7fe36c8383925a4fc3fbc028c511.1602150362.git.lucien.xin@gmail.com> <6f5a15bba0e2b5d3da6be90fd222c5ee41691d32.1602150362.git.lucien.xin@gmail.com> <92d28810a72dee9d0d49e7433b65027cb52de191.1602150362.git.lucien.xin@gmail.com> <1128490426bfb52572ba338e7a631658da49f34c.1602150362.git.lucien.xin@gmail.com> <1d1b2e92f958add640d5be1e6eaec1ac5e4581ce.1602150362.git.lucien.xin@gmail.com> <5c0e9cf835f54c11f7e3014cab926bf10a47298d.1602150362.git.lucien.xin@gmail.com> In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: linux-sctp@vger.kernel.org Message-ID: <20201008094811.UPvwRTUGonvm-VjlsZm47hioegi8fU0HjrlcTRfgSA8@z> This patch is to add the function to make the abort chunk with the error cause for new encapsulation port restart, defined on Section 4.4 in draft-tuexen-tsvwg-sctp-udp-encaps-cons-03. Signed-off-by: Xin Long --- include/linux/sctp.h | 20 ++++++++++++++++++++ include/net/sctp/sm.h | 3 +++ net/sctp/sm_make_chunk.c | 20 ++++++++++++++++++++ 3 files changed, 43 insertions(+) diff --git a/include/linux/sctp.h b/include/linux/sctp.h index 7673123..bb19265 100644 --- a/include/linux/sctp.h +++ b/include/linux/sctp.h @@ -482,11 +482,13 @@ enum sctp_error { * 11 Restart of an association with new addresses * 12 User Initiated Abort * 13 Protocol Violation + * 14 Restart of an Association with New Encapsulation Port */ SCTP_ERROR_RESTART = cpu_to_be16(0x0b), SCTP_ERROR_USER_ABORT = cpu_to_be16(0x0c), SCTP_ERROR_PROTO_VIOLATION = cpu_to_be16(0x0d), + SCTP_ERROR_NEW_ENCAP_PORT = cpu_to_be16(0x0e), /* ADDIP Section 3.3 New Error Causes * @@ -793,4 +795,22 @@ enum { SCTP_FLOWLABEL_VAL_MASK = 0xfffff }; +/* UDP Encapsulation + * draft-tuexen-tsvwg-sctp-udp-encaps-cons-03.html#section-4-4 + * + * The error cause indicating an "Restart of an Association with + * New Encapsulation Port" + * + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Cause Code = 14 | Cause Length = 8 | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Current Encapsulation Port | New Encapsulation Port | + * +-------------------------------+-------------------------------+ + */ +struct sctp_new_encap_port_hdr { + __be16 cur_port; + __be16 new_port; +}; + #endif /* __LINUX_SCTP_H__ */ diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h index a499341..fd223c9 100644 --- a/include/net/sctp/sm.h +++ b/include/net/sctp/sm.h @@ -221,6 +221,9 @@ struct sctp_chunk *sctp_make_violation_paramlen( struct sctp_chunk *sctp_make_violation_max_retrans( const struct sctp_association *asoc, const struct sctp_chunk *chunk); +struct sctp_chunk *sctp_make_new_encap_port( + const struct sctp_association *asoc, + const struct sctp_chunk *chunk); struct sctp_chunk *sctp_make_heartbeat(const struct sctp_association *asoc, const struct sctp_transport *transport); struct sctp_chunk *sctp_make_heartbeat_ack(const struct sctp_association *asoc, diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index 21d0ff1..3bf1399 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -1142,6 +1142,26 @@ struct sctp_chunk *sctp_make_violation_max_retrans( return retval; } +struct sctp_chunk *sctp_make_new_encap_port(const struct sctp_association *asoc, + const struct sctp_chunk *chunk) +{ + struct sctp_new_encap_port_hdr nep; + struct sctp_chunk *retval; + + retval = sctp_make_abort(asoc, chunk, + sizeof(struct sctp_errhdr) + sizeof(nep)); + if (!retval) + goto nodata; + + sctp_init_cause(retval, SCTP_ERROR_NEW_ENCAP_PORT, sizeof(nep)); + nep.cur_port = htons(SCTP_INPUT_CB(chunk->skb)->encap_port); + nep.new_port = htons(chunk->transport->encap_port); + sctp_addto_chunk(retval, sizeof(nep), &nep); + +nodata: + return retval; +} + /* Make a HEARTBEAT chunk. */ struct sctp_chunk *sctp_make_heartbeat(const struct sctp_association *asoc, const struct sctp_transport *transport) -- 2.1.0