From patchwork Thu Oct 29 07:05:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xin Long X-Patchwork-Id: 1389895 X-Patchwork-Delegate: davem@davemloft.net 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=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=ajHUrcVU; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CMHQX5zSGz9sRk for ; Thu, 29 Oct 2020 18:39:48 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726864AbgJ2HYu (ORCPT ); Thu, 29 Oct 2020 03:24:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726896AbgJ2HYg (ORCPT ); Thu, 29 Oct 2020 03:24:36 -0400 Received: from mail-pl1-x630.google.com (mail-pl1-x630.google.com [IPv6:2607:f8b0:4864:20::630]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 826F5C08EA78; Thu, 29 Oct 2020 00:07:09 -0700 (PDT) Received: by mail-pl1-x630.google.com with SMTP id w11so854286pll.8; Thu, 29 Oct 2020 00:07:09 -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=wT/TsOhKuL5HL67D4xz7aT44ptac/zTxHCX64c9ov/Y=; b=ajHUrcVUPOJndnqEYQWipVwrWEgWJsDqQcECX4j/cJxB/2yFtTxw6+1SMEs/dEYXf5 xSo/ztYO7x+UXOqE/VaoI/d4Sd6YbtzbUcqqSz2bfu/+7CX3XBUFBh90DlwdNGYJShXZ TZ7l9O6c3JOWlLApKZVwWqUEGNUdpBk7/LaFVS/ku0Mf0eWTDj77moaOBjbUzqTfM+Ox B3+pjLzwAqeIVXl6+mI8/kha/Eqljrs0O1oXaLOSSDQT3PlxuxSsNBZKLx7tXzmceyTx 52igKrSI19hiZt1h+gKuj2vt4zqRNqtEjvUMZce+emNnpqyKAzDPArhKwK2aldAAyzQA S8lw== 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=wT/TsOhKuL5HL67D4xz7aT44ptac/zTxHCX64c9ov/Y=; b=T+3msblh9tZ88TgBrH6yJQi8dnqReBjVfl22oxc20qDJtZqS+pQq+I513OrmBoKn/4 xlluvtRJ3a+H43ZMUcW82hIJwPweZG5/pdB1ywSdV5xhhd8qL9+b1pTghhvQD6t1EteQ /zGfksQp7TcY+/68NlpzKWP+sKPki+kRlnUdYRVHTsoWJjAbVVDSErroCa02uMPfjr8A fQS7LZbnBnWGNwxnMiEVVIuqcZNvtZrrXQTRcSGYthWsi8quMxqfskqfzkZWhstuzJgB 5r7qUPb3vX+7lsAa331AZo5l0pYfiIRnGYRgk8VGJ63/HTBbsqsezTWTFZTnutJ3Lhk5 mXKg== X-Gm-Message-State: AOAM532L+q3Ev4aGa7otsyrUMYVRTwkrIeLS4CnNi/AFtdQQjX/3aMpY zTbd8wRxoIP5MdYWeTn7dhzLAMLvCAA= X-Google-Smtp-Source: ABdhPJx0XEvLJJGORBDIrCrmk1BC212D3taQQNbWY+onQAZ7zkXnBAS76KlUDvaa1XWrqurxPFXqNg== X-Received: by 2002:a17:902:e993:b029:d6:41d8:9ca3 with SMTP id f19-20020a170902e993b02900d641d89ca3mr3031711plb.57.1603955228748; Thu, 29 Oct 2020 00:07:08 -0700 (PDT) Received: from localhost ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id k10sm1655324pji.54.2020.10.29.00.07.07 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 29 Oct 2020 00:07:08 -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 14/16] sctp: add the error cause for new encapsulation port restart Date: Thu, 29 Oct 2020 15:05:08 +0800 Message-Id: <566c52da624a35533e0d0403f6218dbe9d39589c.1603955041.git.lucien.xin@gmail.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: 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> <88a89930e9ab2d1b2300ca81d7023feaaa818727.1603955041.git.lucien.xin@gmail.com> In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org 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. v1->v2: - no change. v2->v3: - no need to call htons() when setting nep.cur_port/new_port. 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..f77484d 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 = SCTP_INPUT_CB(chunk->skb)->encap_port; + nep.new_port = 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)