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/*
* Copyright (C) 2015 Martine Lenders <mlenders@inf.fu-berlin.de>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @{
*
* @file
*/
#include <stdio.h>
#include <inttypes.h>
#include "od.h"
#include "net/ipv6/hdr.h"
#include "net/sixlowpan.h"
void sixlowpan_print(uint8_t *data, size_t size)
{
if (data[0] == SIXLOWPAN_UNCOMP) {
puts("Uncompressed IPv6 packet");
/* might just be the dispatch (or fragmented) so better check */
if (size > sizeof(ipv6_hdr_t)) {
ipv6_hdr_print((ipv6_hdr_t *)(data + 1));
od_hex_dump(data + sizeof(ipv6_hdr_t) + 1,
size - sizeof(ipv6_hdr_t) - 1,
OD_WIDTH_DEFAULT);
}
}
else if (sixlowpan_nalp(data[0])) {
puts("Not a LoWPAN (NALP) frame");
od_hex_dump(data, size, OD_WIDTH_DEFAULT);
}
else if ((data[0] & SIXLOWPAN_FRAG_DISP_MASK) == SIXLOWPAN_FRAG_1_DISP) {
sixlowpan_frag_t *hdr = (sixlowpan_frag_t *)data;
puts("Fragmentation Header (first)");
printf("datagram size: %" PRIu16 "\n",
(uint16_t) (byteorder_ntohs(hdr->disp_size) & SIXLOWPAN_FRAG_SIZE_MASK));
printf("tag: 0x%" PRIu16 "\n", byteorder_ntohs(hdr->tag));
/* Print next dispatch */
sixlowpan_print(data + sizeof(sixlowpan_frag_t),
size - sizeof(sixlowpan_frag_t));
}
else if ((data[0] & SIXLOWPAN_FRAG_DISP_MASK) == SIXLOWPAN_FRAG_N_DISP) {
sixlowpan_frag_n_t *hdr = (sixlowpan_frag_n_t *)data;
puts("Fragmentation Header (subsequent)");
printf("datagram size: %" PRIu16 "\n",
(uint16_t) (byteorder_ntohs(hdr->disp_size) & SIXLOWPAN_FRAG_SIZE_MASK));
printf("tag: 0x%" PRIu16 "\n", byteorder_ntohs(hdr->tag));
printf("offset: 0x%u\n", (unsigned)hdr->offset);
od_hex_dump(data + sizeof(sixlowpan_frag_n_t),
size - sizeof(sixlowpan_frag_n_t),
OD_WIDTH_DEFAULT);
}
else if ((data[0] & SIXLOWPAN_IPHC1_DISP_MASK) == SIXLOWPAN_IPHC1_DISP) {
uint8_t offset = SIXLOWPAN_IPHC_HDR_LEN;
puts("IPHC dispatch");
switch (data[0] & SIXLOWPAN_IPHC1_TF) {
case 0x00:
puts("TF: ECN + DSCP + Flow Label (4 bytes)");
break;
case 0x08:
puts("TF: ECN + Flow Label (3 bytes)");
break;
case 0x10:
puts("TF: ECN + DSCP (1 bytes)");
break;
case 0x18:
puts("TF: traffic class and flow label elided");
break;
}
switch (data[0] & SIXLOWPAN_IPHC1_NH) {
case 0x00:
puts("NH: inline");
break;
case 0x04:
puts("NH: LOWPAN_NHC");
break;
}
switch (data[0] & SIXLOWPAN_IPHC1_HL) {
case 0x00:
puts("HLIM: inline");
break;
case 0x01:
puts("HLIM: 1");
break;
case 0x02:
puts("HLIM: 64");
break;
case 0x03:
puts("HLIM: 255");
break;
}
if (data[1] & SIXLOWPAN_IPHC2_SAC) {
printf("Stateful source address compression: ");
switch (data[1] & SIXLOWPAN_IPHC2_SAM) {
case 0x00:
puts("unspecified address (::)");
break;
case 0x10:
puts("64 bits inline");
break;
case 0x20:
puts("16 bits inline");
break;
case 0x30:
puts("elided (use L2 address)");
break;
}
}
else {
printf("Stateless source address compression: ");
switch (data[1] & SIXLOWPAN_IPHC2_SAM) {
case 0x00:
puts("128 bits inline");
break;
case 0x10:
puts("64 bits inline");
break;
case 0x20:
puts("16 bits inline");
break;
case 0x30:
puts("elided (use L2 address)");
break;
}
}
if (data[1] & SIXLOWPAN_IPHC2_M) {
if (data[1] & SIXLOWPAN_IPHC2_DAC) {
puts("Stateful destinaton multicast address compression:");
switch (data[1] & SIXLOWPAN_IPHC2_DAM) {
case 0x00:
puts(" 48 bits carried inline (Unicast-Prefix-based)");
break;
case 0x01:
case 0x02:
case 0x03:
puts(" reserved");
break;
}
}
else {
puts("Stateless destinaton multicast address compression:");
switch (data[1] & SIXLOWPAN_IPHC2_DAM) {
case 0x00:
puts(" 128 bits carried inline");
break;
case 0x01:
puts(" 48 bits carried inline");
break;
case 0x02:
puts(" 32 bits carried inline");
break;
case 0x03:
puts(" 8 bits carried inline");
break;
}
}
}
else {
if (data[1] & SIXLOWPAN_IPHC2_DAC) {
printf("Stateful destinaton address compression: ");
switch (data[1] & SIXLOWPAN_IPHC2_DAM) {
case 0x00:
puts("reserved");
break;
case 0x10:
puts("64 bits inline");
break;
case 0x20:
puts("16 bits inline");
break;
case 0x30:
puts("elided (use L2 address)");
break;
}
}
else {
printf("Stateless destinaton address compression: ");
switch (data[1] & SIXLOWPAN_IPHC2_DAM) {
case 0x00:
puts("128 bits inline");
break;
case 0x10:
puts("64 bits inline");
break;
case 0x20:
puts("16 bits inline");
break;
case 0x30:
puts("elided (use L2 address)");
break;
}
}
}
if (data[1] & SIXLOWPAN_IPHC2_CID_EXT) {
offset += SIXLOWPAN_IPHC_CID_EXT_LEN;
printf("SCI: 0x%x, DCI: 0x%x\n", (unsigned)(data[2] >> 4),
(unsigned)(data[2] & 0xf));
}
od_hex_dump(data + offset, size - offset, OD_WIDTH_DEFAULT);
}
}
/** @} */
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