From patchwork Wed Jan 10 01:23:54 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Wang X-Patchwork-Id: 33279 X-Patchwork-Delegate: yuanhan.liu@linux.intel.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 602CA1B1B0; Wed, 10 Jan 2018 02:25:02 +0100 (CET) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id 0E36C1B1B0 for ; Wed, 10 Jan 2018 02:24:58 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Jan 2018 17:24:58 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,337,1511856000"; d="scan'208";a="25905935" Received: from dpdk-xiao-1.sh.intel.com ([10.67.110.153]) by orsmga002.jf.intel.com with ESMTP; 09 Jan 2018 17:24:56 -0800 From: Xiao Wang To: yliu@fridaylinux.org, thomas@monjalon.net Cc: tiwei.bie@intel.com, dev@dpdk.org, stephen@networkplumber.org, maxime.coquelin@redhat.com, Xiao Wang Date: Wed, 10 Jan 2018 09:23:54 +0800 Message-Id: <20180110012356.57456-4-xiao.w.wang@intel.com> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180110012356.57456-1-xiao.w.wang@intel.com> References: <20180109160918.29173-4-xiao.w.wang@intel.com> <20180110012356.57456-1-xiao.w.wang@intel.com> Subject: [dpdk-dev] [PATCH v10 3/5] net: add a helper for making RARP packet X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Suggested-by: Maxime Coquelin Signed-off-by: Xiao Wang Reviewed-by: Maxime Coquelin --- lib/librte_net/Makefile | 1 + lib/librte_net/rte_arp.c | 42 ++++++++++++++++++++++++++++++++++++++ lib/librte_net/rte_arp.h | 17 +++++++++++++++ lib/librte_net/rte_net_version.map | 6 ++++++ 4 files changed, 66 insertions(+) create mode 100644 lib/librte_net/rte_arp.c diff --git a/lib/librte_net/Makefile b/lib/librte_net/Makefile index 5e8a76b68..ab290c382 100644 --- a/lib/librte_net/Makefile +++ b/lib/librte_net/Makefile @@ -13,6 +13,7 @@ LIBABIVER := 1 SRCS-$(CONFIG_RTE_LIBRTE_NET) := rte_net.c SRCS-$(CONFIG_RTE_LIBRTE_NET) += rte_net_crc.c +SRCS-$(CONFIG_RTE_LIBRTE_NET) += rte_arp.c # install includes SYMLINK-$(CONFIG_RTE_LIBRTE_NET)-include := rte_ip.h rte_tcp.h rte_udp.h rte_esp.h diff --git a/lib/librte_net/rte_arp.c b/lib/librte_net/rte_arp.c new file mode 100644 index 000000000..d7223b044 --- /dev/null +++ b/lib/librte_net/rte_arp.c @@ -0,0 +1,42 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Intel Corporation + */ + +#include + +#include + +#define RARP_PKT_SIZE 64 +int +rte_net_make_rarp_packet(struct rte_mbuf *mbuf, const struct ether_addr *mac) +{ + struct ether_hdr *eth_hdr; + struct arp_hdr *rarp; + + if (mbuf->buf_len < RARP_PKT_SIZE) + return -1; + + /* Ethernet header. */ + eth_hdr = rte_pktmbuf_mtod(mbuf, struct ether_hdr *); + memset(eth_hdr->d_addr.addr_bytes, 0xff, ETHER_ADDR_LEN); + ether_addr_copy(mac, ð_hdr->s_addr); + eth_hdr->ether_type = htons(ETHER_TYPE_RARP); + + /* RARP header. */ + rarp = (struct arp_hdr *)(eth_hdr + 1); + rarp->arp_hrd = htons(ARP_HRD_ETHER); + rarp->arp_pro = htons(ETHER_TYPE_IPv4); + rarp->arp_hln = ETHER_ADDR_LEN; + rarp->arp_pln = 4; + rarp->arp_op = htons(ARP_OP_REVREQUEST); + + ether_addr_copy(mac, &rarp->arp_data.arp_sha); + ether_addr_copy(mac, &rarp->arp_data.arp_tha); + memset(&rarp->arp_data.arp_sip, 0x00, 4); + memset(&rarp->arp_data.arp_tip, 0x00, 4); + + mbuf->data_len = RARP_PKT_SIZE; + mbuf->pkt_len = RARP_PKT_SIZE; + + return 0; +} diff --git a/lib/librte_net/rte_arp.h b/lib/librte_net/rte_arp.h index 183641874..dad7423ad 100644 --- a/lib/librte_net/rte_arp.h +++ b/lib/librte_net/rte_arp.h @@ -76,6 +76,23 @@ struct arp_hdr { struct arp_ipv4 arp_data; } __attribute__((__packed__)); +/** + * @warning + * @b EXPERIMENTAL: this API may change without prior notice + * + * Make a RARP packet based on MAC addr. + * + * @param mbuf + * Pointer to the rte_mbuf structure + * @param mac + * Pointer to the MAC addr + * + * @return + * - 0 on success, negative on error + */ +int +rte_net_make_rarp_packet(struct rte_mbuf *mbuf, const struct ether_addr *mac); + #ifdef __cplusplus } #endif diff --git a/lib/librte_net/rte_net_version.map b/lib/librte_net/rte_net_version.map index 687c40eaf..213e6fd32 100644 --- a/lib/librte_net/rte_net_version.map +++ b/lib/librte_net/rte_net_version.map @@ -12,3 +12,9 @@ DPDK_17.05 { rte_net_crc_set_alg; } DPDK_16.11; + +EXPERIMENTAL { + global: + + rte_net_make_rarp_packet; +} DPDK_17.05;