From patchwork Fri Mar 27 22:00:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Aring X-Patchwork-Id: 1263055 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=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; 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=FWP9JUqZ; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48pwlg5c0Yz9sSG for ; Sat, 28 Mar 2020 09:00:47 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727685AbgC0WAq (ORCPT ); Fri, 27 Mar 2020 18:00:46 -0400 Received: from mail-qk1-f169.google.com ([209.85.222.169]:43994 "EHLO mail-qk1-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726781AbgC0WAq (ORCPT ); Fri, 27 Mar 2020 18:00:46 -0400 Received: by mail-qk1-f169.google.com with SMTP id o10so12491030qki.10 for ; Fri, 27 Mar 2020 15:00:45 -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 :mime-version:content-transfer-encoding; bh=04qconmLEazi5kRkpGbM2edP1QbpR1jlZYfgCe7OLT0=; b=FWP9JUqZksFgdGUN3gB8r9gM3bHEmvad+T9UZ81m/UQyDjdrGgF2wBGEsDIDFgooyu m4wZXs/G4U7Ummdbxle1ZjFMmYrehjcKVetEZR4pNk+2w4MZk5gQ3QrcXSBacF3ErD37 8YM37pE3DL/uqfDgeAgi2rnLV6sufmrs0WlBrw4YWIwZcHl0eGTpvRC6akL5/XsDbKb2 vCCIhN0z+pLcy2CjIfCpiLU0HYhavUavdrR4Vo66UVu/b7NTAaGK4qyF96AenYWHlDJz d9lALffWJ8qWFdplwsEGrTo0XAkEkG8QubhHHzkufF3uUbVMBy/UjO0RrEVfkah2Jl9b kbFw== 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:mime-version:content-transfer-encoding; bh=04qconmLEazi5kRkpGbM2edP1QbpR1jlZYfgCe7OLT0=; b=Xgc+2z2GppelryU1+UjkAakJBzUrnLW0D2Jeb1TlZRveIqYPNdd+GSf9cXIANlL/F+ dUaRyROCK1leEdIAUP+PIL6mzWKIujusfAJHFrYMAQ0NdIWu/lnYv2xYu+JMsLr9zuKW 7fiJQvrrBDsbA146eREqCZKMOxcf9XvOKiCVJHoWaE3VwCMsy3j0X5LUL2Wn8UlSVIah xfhI9GZGgLGcDANMHhVwRnl8fn4KQ9VU2zfuMW8kbu8Af1q5H4p+8uwDoo7X9EyWvlbZ 3gi6xbym15KV/b07q0S64+n1ONyLRbaepOMFkHKaFT1SWHTgssz3LB/K3LZ+1TfiPODm 3VnQ== X-Gm-Message-State: ANhLgQ0X+PyZC3pNfQH01imSkWzfTjt795pClc/UOkDsQ0Hmh3eL29t4 xu95tDRR5ScQw3J1NtowH3Y= X-Google-Smtp-Source: ADFU+vs4sPgNJoPD1REd6GegN+gVUD7ea7CdZWLfgAs5EOh8fbuTRIumZ13MleGkwaX11/FIKGNiKg== X-Received: by 2002:a37:b986:: with SMTP id j128mr1471193qkf.109.1585346445166; Fri, 27 Mar 2020 15:00:45 -0700 (PDT) Received: from localhost.localdomain ([45.72.142.47]) by smtp.gmail.com with ESMTPSA id v20sm5073659qth.10.2020.03.27.15.00.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Mar 2020 15:00:44 -0700 (PDT) From: Alexander Aring To: davem@davemloft.net Cc: kuznet@ms2.inr.ac.ru, yoshfuji@linux-ipv6.org, kuba@kernel.org, dav.lebrun@gmail.com, mcr@sandelman.ca, stefan@datenfreihafen.org, kai.beckmann@hs-rm.de, martin.gergeleit@hs-rm.de, robert.kaiser@hs-rm.de, netdev@vger.kernel.org, Alexander Aring Subject: [PATCHv3 net-next 1/5] include: uapi: linux: add rpl sr header definition Date: Fri, 27 Mar 2020 18:00:18 -0400 Message-Id: <20200327220022.15220-2-alex.aring@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200327220022.15220-1-alex.aring@gmail.com> References: <20200327220022.15220-1-alex.aring@gmail.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch adds a uapi header for rpl struct definition. The segments data can be accessed over rpl_segaddr or rpl_segdata macros. In case of compri and compre is zero the segment data is not compressed and can be accessed by rpl_segaddr. In the other case the compressed data can be accessed by rpl_segdata and interpreted as byte array. Signed-off-by: Alexander Aring --- include/uapi/linux/rpl.h | 48 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 include/uapi/linux/rpl.h diff --git a/include/uapi/linux/rpl.h b/include/uapi/linux/rpl.h new file mode 100644 index 000000000000..1dccb55cf8c6 --- /dev/null +++ b/include/uapi/linux/rpl.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ +/* + * IPv6 RPL-SR implementation + * + * Author: + * (C) 2020 Alexander Aring + */ + +#ifndef _UAPI_LINUX_RPL_H +#define _UAPI_LINUX_RPL_H + +#include +#include +#include + +/* + * RPL SR Header + */ +struct ipv6_rpl_sr_hdr { + __u8 nexthdr; + __u8 hdrlen; + __u8 type; + __u8 segments_left; +#if defined(__LITTLE_ENDIAN_BITFIELD) + __u32 cmpre:4, + cmpri:4, + reserved:4, + pad:4, + reserved1:16; +#elif defined(__BIG_ENDIAN_BITFIELD) + __u32 reserved:20, + pad:4, + cmpri:4, + cmpre:4; +#else +#error "Please fix " +#endif + + union { + struct in6_addr addr[0]; + __u8 data[0]; + } segments; +} __attribute__((packed)); + +#define rpl_segaddr segments.addr +#define rpl_segdata segments.data + +#endif