From patchwork Mon Feb 17 22:35:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Aring X-Patchwork-Id: 1239631 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=qeU8AYJl; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48LzPP2fsCz9sRY for ; Tue, 18 Feb 2020 09:36:57 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726182AbgBQWgx (ORCPT ); Mon, 17 Feb 2020 17:36:53 -0500 Received: from mail-qv1-f47.google.com ([209.85.219.47]:36184 "EHLO mail-qv1-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725853AbgBQWgw (ORCPT ); Mon, 17 Feb 2020 17:36:52 -0500 Received: by mail-qv1-f47.google.com with SMTP id db9so8304852qvb.3 for ; Mon, 17 Feb 2020 14:36:50 -0800 (PST) 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=qeU8AYJlgVoWA7Y8PW4kl3b4LkEyhmNWfCODdHbLFcvijKimP5/KVAKpTmn2KLfzmm v8aniRftIQdTTs/rYSX9atvVhZ7xJBYkVhgFRqEEG8bMtou/BGEEdXp7maFbUHKhmeva xeoI7ru+I9EEkOCs56FFJ+wYppsQmNW5/sm9SJlYzzS3G4hR+YezBVvlaPpd9gd3Jcjo KCIFZaYEfpO2dec8MgGKcbibDKnH0R4pu9M0Lro/X3uDtmpSOoTaQsa3cJkQm6Dfz9YG qTS4FwPbx7JMPQfpcm04sRzerfuqrsRDgscqD6gZfGQ4VoRuyifM9HIkGXSJFDQ4TQ3G fa1Q== 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=B0vh5UHB3AFSeCMzdtMNjHxaKfk5nPGjacNDvfrTitDlgdcD9R8tC9J/Ajsank2PcH 4fKWIRcSECUfcSjQqONlGv9RLx3pc9EiVDzvX0jD5/htTxzKFfRpKWcyxtZfSw2Vk5OP 77/FkOi287DUX4gZ68hcs6zaeqWCc/7SddIwWHhAGgJ9Jfv1enKWAoJNUC7eWqrV6a+N TGPh501YTRU7+ThSj+kEyGDlBtwGhYn9/S0Isqtlvh8NXT9lonj+KOQxf35kGaUFDOsN d74Lh6K6cte10pjZn37isDibcUihyC7T9FhaBZVBnqfim067+2+UT5Y1we09Ge/kPXfI bk3g== X-Gm-Message-State: APjAAAXOvmITOyirPKUVJlyTHkXCNQ4QrRNmMJaIFocCRH2EXePUFFEA xwGFIJi48tdS4ko8RoLh37I= X-Google-Smtp-Source: APXvYqyBx4g8c9Sm5/3P8fyGV70F+XzyaJ8NIWZQdRzLtAPH8gQCn3cqgeE7VwGByTm4e+ae2n3Srg== X-Received: by 2002:ad4:59c2:: with SMTP id el2mr13753967qvb.152.1581979010477; Mon, 17 Feb 2020 14:36:50 -0800 (PST) Received: from localhost.localdomain ([216.154.21.195]) by smtp.gmail.com with ESMTPSA id a2sm964031qka.75.2020.02.17.14.36.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Feb 2020 14:36:50 -0800 (PST) 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: [PACTH net-next 1/5] include: uapi: linux: add rpl sr header definition Date: Mon, 17 Feb 2020 17:35:37 -0500 Message-Id: <20200217223541.18862-2-alex.aring@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200217223541.18862-1-alex.aring@gmail.com> References: <20200217223541.18862-1-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