From patchwork Thu Jul 14 08:25:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wojciech Drewek X-Patchwork-Id: 12917474 X-Patchwork-Delegate: dsahern@gmail.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5E7B6C43334 for ; Thu, 14 Jul 2022 08:27:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234296AbiGNI1c (ORCPT ); Thu, 14 Jul 2022 04:27:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51956 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234322AbiGNI1b (ORCPT ); Thu, 14 Jul 2022 04:27:31 -0400 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9CA693AE67 for ; Thu, 14 Jul 2022 01:27:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657787249; x=1689323249; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=nSy3ObsbX++OR1AAw+VgO1Xh02y07OlU/A4sL2Hso6c=; b=erjEtoYjmob03Ff6kKHj1deeQzggwy5j8nPFac65kUEX5/uh2VvUMUiL 3vdrrvrexuKF+qCRET9sH+mU8iSREbYhd7S76t0dKf6+og20DvqZMzZHS /mzbmDNPOTADZeRp/O/HqK9EVypMjibtgVsHCvVPTXYHUTEWCAyFGzTEi 875XziaDatK4UD0B8dAY7jzWkmLBV16cpINLHaPYoeaNlWHkbrIFdFW5A ++QRys1BDc8f9W4mE15TIThscLpgJtMeaVJwj/0hDSxd8E/C1m23Ur4lc C2I+Zuo8LB6npHmyDt1QI9rNxbuQEc1noPsyquMeHVMzpcR0/3pcs4c8I Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10407"; a="283007014" X-IronPort-AV: E=Sophos;i="5.92,269,1650956400"; d="scan'208";a="283007014" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jul 2022 01:27:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.92,269,1650956400"; d="scan'208";a="628624175" Received: from irvmail001.ir.intel.com ([10.43.11.63]) by orsmga001.jf.intel.com with ESMTP; 14 Jul 2022 01:27:28 -0700 Received: from switcheroo.igk.intel.com (switcheroo.igk.intel.com [172.22.229.137]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id 26E8RQl7029602; Thu, 14 Jul 2022 09:27:27 +0100 From: Wojciech Drewek To: netdev@vger.kernel.org Cc: dsahern@gmail.com, stephen@networkplumber.org Subject: [PATCH iproute2-next 1/2] lib: Introduce ppp protocols Date: Thu, 14 Jul 2022 10:25:21 +0200 Message-Id: <20220714082522.54913-2-wojciech.drewek@intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220714082522.54913-1-wojciech.drewek@intel.com> References: <20220714082522.54913-1-wojciech.drewek@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: dsahern@gmail.com PPP protocol field uses different values than ethertype. Introduce utilities for translating PPP protocols from strings to values and vice versa. Existing helper functions were moved from lib/ll_proto.c to lib/utils.c. Signed-off-by: Wojciech Drewek --- include/rt_names.h | 3 ++ include/uapi/linux/ppp_defs.h | 37 +++++++++++++++++++++++++ include/utils.h | 10 +++++++ lib/Makefile | 2 +- lib/ll_proto.c | 33 ++++++---------------- lib/ppp_proto.c | 52 +++++++++++++++++++++++++++++++++++ lib/utils.c | 34 +++++++++++++++++++++++ 7 files changed, 145 insertions(+), 26 deletions(-) create mode 100644 include/uapi/linux/ppp_defs.h create mode 100644 lib/ppp_proto.c diff --git a/include/rt_names.h b/include/rt_names.h index 1835f3be2bed..6358650db404 100644 --- a/include/rt_names.h +++ b/include/rt_names.h @@ -31,6 +31,9 @@ int ll_addr_a2n(char *lladdr, int len, const char *arg); const char * ll_proto_n2a(unsigned short id, char *buf, int len); int ll_proto_a2n(unsigned short *id, const char *buf); +const char *ppp_proto_n2a(unsigned short id, char *buf, int len); +int ppp_proto_a2n(unsigned short *id, const char *buf); + const char *nl_proto_n2a(int id, char *buf, int len); int nl_proto_a2n(__u32 *id, const char *arg); diff --git a/include/uapi/linux/ppp_defs.h b/include/uapi/linux/ppp_defs.h new file mode 100644 index 000000000000..0013dc77e3b9 --- /dev/null +++ b/include/uapi/linux/ppp_defs.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * ppp_defs.h - PPP definitions. + * + * Copyright 1994-2000 Paul Mackerras. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + */ + +/* + * Protocol field values. + */ +#define PPP_IP 0x21 /* Internet Protocol */ +#define PPP_AT 0x29 /* AppleTalk Protocol */ +#define PPP_IPX 0x2b /* IPX protocol */ +#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ +#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ +#define PPP_MP 0x3d /* Multilink protocol */ +#define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ +#define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */ +#define PPP_COMP 0xfd /* compressed packet */ +#define PPP_MPLS_UC 0x0281 /* Multi Protocol Label Switching - Unicast */ +#define PPP_MPLS_MC 0x0283 /* Multi Protocol Label Switching - Multicast */ +#define PPP_IPCP 0x8021 /* IP Control Protocol */ +#define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ +#define PPP_IPXCP 0x802b /* IPX Control Protocol */ +#define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ +#define PPP_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */ +#define PPP_CCP 0x80fd /* Compression Control Protocol */ +#define PPP_MPLSCP 0x80fd /* MPLS Control Protocol */ +#define PPP_LCP 0xc021 /* Link Control Protocol */ +#define PPP_PAP 0xc023 /* Password Authentication Protocol */ +#define PPP_LQR 0xc025 /* Link Quality Report protocol */ +#define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ +#define PPP_CBCP 0xc029 /* Callback Control Protocol */ diff --git a/include/utils.h b/include/utils.h index 9765fdd231df..0c9022760916 100644 --- a/include/utils.h +++ b/include/utils.h @@ -369,4 +369,14 @@ void inc_indent(struct indent_mem *mem); void dec_indent(struct indent_mem *mem); void print_indent(struct indent_mem *mem); +struct proto { + int id; + const char *name; +}; + +int __proto_a2n(unsigned short *id, const char *buf, + const struct proto *proto_tb, size_t tb_len); +const char *__proto_n2a(unsigned short id, char *buf, int len, + const struct proto *proto_tb, size_t tb_len); + #endif /* __UTILS_H__ */ diff --git a/lib/Makefile b/lib/Makefile index 6c98f9a61fdb..ddedd37feb32 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -5,7 +5,7 @@ CFLAGS += -fPIC UTILOBJ = utils.o utils_math.o rt_names.o ll_map.o ll_types.o ll_proto.o ll_addr.o \ inet_proto.o namespace.o json_writer.o json_print.o json_print_math.o \ - names.o color.o bpf_legacy.o bpf_glue.o exec.o fs.o cg_map.o + names.o color.o bpf_legacy.o bpf_glue.o exec.o fs.o cg_map.o ppp_proto.o ifeq ($(HAVE_ELF),y) ifeq ($(HAVE_LIBBPF),y) diff --git a/lib/ll_proto.c b/lib/ll_proto.c index 342ea2eefa4c..f067516cde9e 100644 --- a/lib/ll_proto.c +++ b/lib/ll_proto.c @@ -28,10 +28,8 @@ #define __PF(f,n) { ETH_P_##f, #n }, -static const struct { - int id; - const char *name; -} llproto_names[] = { + +static const struct proto llproto_names[] = { __PF(LOOP,loop) __PF(PUP,pup) __PF(PUPAT,pupat) @@ -90,31 +88,16 @@ __PF(TEB,teb) }; #undef __PF - -const char * ll_proto_n2a(unsigned short id, char *buf, int len) +const char *ll_proto_n2a(unsigned short id, char *buf, int len) { - int i; + size_t len_tb = ARRAY_SIZE(llproto_names); - id = ntohs(id); - - for (i=0; !numeric && i + */ + +#include +#include +#include "utils.h" +#include "rt_names.h" + +static const struct proto ppp_proto_names[] = { + {PPP_IP, "ip"}, + {PPP_AT, "at"}, + {PPP_IPX, "ipx"}, + {PPP_VJC_COMP, "vjc_comp"}, + {PPP_VJC_UNCOMP, "vjc_uncomp"}, + {PPP_MP, "mp"}, + {PPP_IPV6, "ipv6"}, + {PPP_COMPFRAG, "compfrag"}, + {PPP_COMP, "comp"}, + {PPP_MPLS_UC, "mpls_uc"}, + {PPP_MPLS_MC, "mpls_mc"}, + {PPP_IPCP, "ipcp"}, + {PPP_ATCP, "atcp"}, + {PPP_IPXCP, "ipxcp"}, + {PPP_IPV6CP, "ipv6cp"}, + {PPP_CCPFRAG, "ccpfrag"}, + {PPP_CCP, "ccp"}, + {PPP_MPLSCP, "mplscp"}, + {PPP_LCP, "lcp"}, + {PPP_PAP, "pap"}, + {PPP_LQR, "lqr"}, + {PPP_CHAP, "chap"}, + {PPP_CBCP, "cbcp"}, +}; + +const char *ppp_proto_n2a(unsigned short id, char *buf, int len) +{ + size_t len_tb = ARRAY_SIZE(ppp_proto_names); + + return __proto_n2a(id, buf, len, ppp_proto_names, len_tb); +} + +int ppp_proto_a2n(unsigned short *id, const char *buf) +{ + size_t len_tb = ARRAY_SIZE(ppp_proto_names); + + return __proto_a2n(id, buf, ppp_proto_names, len_tb); +} diff --git a/lib/utils.c b/lib/utils.c index 53d310060284..6b88ba31b335 100644 --- a/lib/utils.c +++ b/lib/utils.c @@ -1925,3 +1925,37 @@ void print_indent(struct indent_mem *mem) if (mem->indent_level) printf("%s", mem->indent_str); } + +const char *__proto_n2a(unsigned short id, char *buf, int len, + const struct proto *proto_tb, size_t tb_len) +{ + int i; + + id = ntohs(id); + + for (i = 0; !numeric && i < tb_len; i++) { + if (proto_tb[i].id == id) + return proto_tb[i].name; + } + + snprintf(buf, len, "[%d]", id); + + return buf; +} + +int __proto_a2n(unsigned short *id, const char *buf, + const struct proto *proto_tb, size_t tb_len) +{ + int i; + + for (i = 0; i < tb_len; i++) { + if (strcasecmp(proto_tb[i].name, buf) == 0) { + *id = htons(proto_tb[i].id); + return 0; + } + } + if (get_be16(id, buf, 0)) + return -1; + + return 0; +}