ARP: Add missing configuration option to select dumping of ARP packet headers. Move ARP dumping logic from arp_inout.c to its own file
This commit is contained in:
Gregory Nutt
parent
9aab8f77ea
commit
985c016150
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@ -34,5 +34,12 @@ config NET_ARP_IPIN
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Harvest IP/MAC address mappings from the ARP table
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from incoming IP packets.
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config NET_ARP_DUMP
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bool "Dump ARP packet header"
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default n
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depends on DEBUG
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---help---
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Dump ARP packets to the SYSLOG device.
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endif # NET_ARP
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endmenu # ARP Configuration
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@ -38,6 +38,10 @@
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ifneq ($(CONFIG_NET_SLIP),y)
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NET_CSRCS += arp_inout.c arp_table.c arp_timer.c
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ifeq ($(CONFIG_NET_ARP_DUMP),y)
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NET_CSRCS += arp_dump.c
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endif
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# Include arp build support
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DEPPATH += --dep-path arp
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@ -36,14 +36,76 @@
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#ifndef __NET_ARP_ARP_H
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#define __NET_ARP_ARP_H
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/* The Address Resolution Protocol ARP is used for mapping between IP
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* addresses and link level addresses such as the Ethernet MAC
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* addresses. ARP uses broadcast queries to ask for the link level
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* address of a known IP address and the host which is configured with
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* the IP address for which the query was meant, will respond with its
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* link level address.
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*
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* Note: This ARP implementation only supports Ethernet.
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*/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#ifndef CONFIG_DEBUG
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# undef CONFIG_NET_ARP_DUMP
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#endif
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/* ARP Definitions **********************************************************/
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#define ARP_REQUEST 1
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#define ARP_REPLY 2
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#define ARP_HWTYPE_ETH 1
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#define RASIZE 4 /* Size of ROUTER ALERT */
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* ARP header -- Size 28 bytes */
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struct arp_hdr_s
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{
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uint16_t ah_hwtype; /* 16-bit Hardware type (Ethernet=0x001) */
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uint16_t ah_protocol; /* 16-bit Protocol type (IP=0x0800) */
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uint8_t ah_hwlen; /* 8-bit Hardware address size (6) */
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uint8_t ah_protolen; /* 8-bit Procotol address size (4) */
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uint16_t ah_opcode; /* 16-bit Operation */
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uint8_t ah_shwaddr[6]; /* 48-bit Sender hardware address */
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uint16_t ah_sipaddr[2]; /* 32-bit Sender IP adress */
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uint8_t ah_dhwaddr[6]; /* 48-bit Target hardware address */
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uint16_t ah_dipaddr[2]; /* 32-bit Target IP address */
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};
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/* IP header -- Size 20 or 24 bytes */
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struct arp_iphdr_s
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{
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uint8_t eh_vhl; /* 8-bit Version (4) and header length (5 or 6) */
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uint8_t eh_tos; /* 8-bit Type of service (e.g., 6=TCP) */
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uint8_t eh_len[2]; /* 16-bit Total length */
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uint8_t eh_ipid[2]; /* 16-bit Identification */
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uint8_t eh_ipoffset[2]; /* 16-bit IP flags + fragment offset */
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uint8_t eh_ttl; /* 8-bit Time to Live */
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uint8_t eh_proto; /* 8-bit Protocol */
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uint16_t eh_ipchksum; /* 16-bit Header checksum */
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uint16_t eh_srcipaddr[2]; /* 32-bit Source IP address */
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uint16_t eh_destipaddr[2]; /* 32-bit Destination IP address */
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uint16_t eh_ipoption[2]; /* (optional) */
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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@ -92,6 +154,26 @@ void arp_timer_initialize(void);
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void arp_timer(void);
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/****************************************************************************
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* Name: arp_dump
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*
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* Description:
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* Dump the contents of an ARP packet to the SYSLOG device
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*
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* Input Parameters:
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* arp - A reference to the ARP header to be dumped.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_NET_ARP_DUMP
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void arp_dump(FAR struct arp_hdr_s *arp);
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#else
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# define arp_dump(arp)
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#endif
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#else /* CONFIG_NET_ARP */
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/* If ARP is disabled, stub out all ARP interfaces */
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@ -99,6 +181,7 @@ void arp_timer(void);
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# define arp_reset()
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# define arp_timer_initialize(void)
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# define arp_timer()
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# define arp_dump(arp)
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#endif /* CONFIG_NET_ARP */
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#endif /* __UIP-NEIGHBOR_H__ */
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#endif /* __NET_ARP_ARP_H */
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@ -0,0 +1,104 @@
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/****************************************************************************
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* net/arp/arp_dump.c
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*
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* Copyright (C) 2007-2011, 2014 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Based on uIP which also has a BSD style license:
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*
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* Author: Adam Dunkels <adam@dunkels.com>
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* Copyright (c) 2001-2003, Adam Dunkels.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <debug.h>
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#include "arp/arp.h"
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#ifdef CONFIG_NET_ARP_DUMP
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: arp_dump
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*
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* Description:
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* Dump the contents of an ARP packet to the SYSLOG device
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*
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* Input Parameters:
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* arp - A reference to the ARP header to be dumped.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void arp_dump(FAR struct arp_hdr_s *arp)
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{
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nlldbg(" HW type: %04x Protocol: %04x\n",
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arp->ah_hwtype, arp->ah_protocol);\
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nlldbg(" HW len: %02x Proto len: %02x Operation: %04x\n",
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arp->ah_hwlen, arp->ah_protolen, arp->ah_opcode);
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nlldbg(" Sender MAC: %02x:%02x:%02x:%02x:%02x:%02x IP: %d.%d.%d.%d\n",
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arp->ah_shwaddr[0], arp->ah_shwaddr[1], arp->ah_shwaddr[2],
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arp->ah_shwaddr[3], arp->ah_shwaddr[4], arp->ah_shwaddr[5],
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arp->ah_sipaddr[0] & 0xff, arp->ah_sipaddr[0] >> 8,
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arp->ah_sipaddr[1] & 0xff, arp->ah_sipaddr[1] >> 8);
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nlldbg(" Dest MAC: %02x:%02x:%02x:%02x:%02x:%02x IP: %d.%d.%d.%d\n",
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arp->ah_dhwaddr[0], arp->ah_dhwaddr[1], arp->ah_dhwaddr[2],
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arp->ah_dhwaddr[3], arp->ah_dhwaddr[4], arp->ah_dhwaddr[5],
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arp->ah_dipaddr[0] & 0xff, arp->ah_dipaddr[0] >> 8,
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arp->ah_dipaddr[1] & 0xff, arp->ah_dipaddr[1] >> 8);
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}
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#endif /* CONFIG_NET_ARP_DUMP */
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@ -1,5 +1,5 @@
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/****************************************************************************
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* net/arp/arm_inout.c
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* net/arp/arp_inout.c
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* Implementation of the ARP Address Resolution Protocol.
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*
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* Copyright (C) 2007-2011, 2014 Gregory Nutt. All rights reserved.
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@ -38,16 +38,6 @@
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*
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****************************************************************************/
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/* The Address Resolution Protocol ARP is used for mapping between IP
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* addresses and link level addresses such as the Ethernet MAC
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* addresses. ARP uses broadcast queries to ask for the link level
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* address of a known IP address and the host which is configured with
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* the IP address for which the query was meant, will respond with its
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* link level address.
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*
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* Note: This ARP implementation only supports Ethernet.
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*/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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@ -79,13 +69,6 @@
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* Pre-processor Definitions
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****************************************************************************/
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#define ARP_REQUEST 1
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#define ARP_REPLY 2
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#define ARP_HWTYPE_ETH 1
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#define RASIZE 4 /* Size of ROUTER ALERT */
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#define ETHBUF ((struct eth_hdr_s *)&dev->d_buf[0])
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#define ARPBUF ((struct arp_hdr_s *)&dev->d_buf[NET_LL_HDRLEN])
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#define IPBUF ((struct arp_iphdr_s *)&dev->d_buf[NET_LL_HDRLEN])
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@ -94,38 +77,6 @@
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* Private Types
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****************************************************************************/
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/* ARP header -- Size 28 bytes */
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struct arp_hdr_s
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{
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uint16_t ah_hwtype; /* 16-bit Hardware type (Ethernet=0x001) */
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uint16_t ah_protocol; /* 16-bit Protocol type (IP=0x0800) */
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uint8_t ah_hwlen; /* 8-bit Hardware address size (6) */
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uint8_t ah_protolen; /* 8-bit Procotol address size (4) */
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uint16_t ah_opcode; /* 16-bit Operation */
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uint8_t ah_shwaddr[6]; /* 48-bit Sender hardware address */
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uint16_t ah_sipaddr[2]; /* 32-bit Sender IP adress */
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uint8_t ah_dhwaddr[6]; /* 48-bit Target hardware address */
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uint16_t ah_dipaddr[2]; /* 32-bit Target IP address */
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};
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/* IP header -- Size 20 or 24 bytes */
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struct arp_iphdr_s
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{
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uint8_t eh_vhl; /* 8-bit Version (4) and header length (5 or 6) */
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uint8_t eh_tos; /* 8-bit Type of service (e.g., 6=TCP) */
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uint8_t eh_len[2]; /* 16-bit Total length */
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uint8_t eh_ipid[2]; /* 16-bit Identification */
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uint8_t eh_ipoffset[2]; /* 16-bit IP flags + fragment offset */
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uint8_t eh_ttl; /* 8-bit Time to Live */
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uint8_t eh_proto; /* 8-bit Protocol */
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uint16_t eh_ipchksum; /* 16-bit Header checksum */
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uint16_t eh_srcipaddr[2]; /* 32-bit Source IP address */
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uint16_t eh_destipaddr[2]; /* 32-bit Destination IP address */
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uint16_t eh_ipoption[2]; /* (optional) */
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};
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/****************************************************************************
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* Private Data
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****************************************************************************/
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@ -160,28 +111,6 @@ static const uint8_t g_multicast_ethaddr[3] = {0x01, 0x00, 0x5e};
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* Private Functions
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****************************************************************************/
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#if defined(CONFIG_NET_DUMPARP) && defined(CONFIG_DEBUG)
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static void arp_dump(FAR struct arp_hdr_s *arp)
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{
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nlldbg(" HW type: %04x Protocol: %04x\n",
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arp->ah_hwtype, arp->ah_protocol);\
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nlldbg(" HW len: %02x Proto len: %02x Operation: %04x\n",
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arp->ah_hwlen, arp->ah_protolen, arp->ah_opcode);
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nlldbg(" Sender MAC: %02x:%02x:%02x:%02x:%02x:%02x IP: %d.%d.%d.%d\n",
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arp->ah_shwaddr[0], arp->ah_shwaddr[1], arp->ah_shwaddr[2],
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arp->ah_shwaddr[3], arp->ah_shwaddr[4], arp->ah_shwaddr[5],
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arp->ah_sipaddr[0] & 0xff, arp->ah_sipaddr[0] >> 8,
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arp->ah_sipaddr[1] & 0xff, arp->ah_sipaddr[1] >> 8);
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nlldbg(" Dest MAC: %02x:%02x:%02x:%02x:%02x:%02x IP: %d.%d.%d.%d\n",
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arp->ah_dhwaddr[0], arp->ah_dhwaddr[1], arp->ah_dhwaddr[2],
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arp->ah_dhwaddr[3], arp->ah_dhwaddr[4], arp->ah_dhwaddr[5],
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arp->ah_dipaddr[0] & 0xff, arp->ah_dipaddr[0] >> 8,
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arp->ah_dipaddr[1] & 0xff, arp->ah_dipaddr[1] >> 8);
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}
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#else
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# define arp_dump(arp)
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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