6LoWPAN

Provides 6LoWPAN dispatch types and helper functions.

bool sixlowpan_nalp(uint8_t disp)

Checks if dispatch indicates that frame is not a 6LoWPAN (NALP) frame.

Parameters

disp:The first byte of a frame.

Return values

  • true, if frame is a NALP.
  • false, if frame is not a NALP.
SIXLOWPAN_UNCOMP

uncompressed 6LoWPAN frame dispatch. 

1
(0x41)
SIXLOWPAN_FRAG_DISP_MASK

mask for fragmentation dispatch 

1
(0xf8)
SIXLOWPAN_FRAG_1_DISP

dispatch for 1st fragment 

1
(0xc0)
SIXLOWPAN_FRAG_N_DISP

dispatch for subsequent fragments 

1
(0xe0)
SIXLOWPAN_FRAG_MAX_LEN

Maximum datagram size . 

1
(2047)
SIXLOWPAN_IPHC1_DISP_MASK

Dispatch mask for LOWPAN_IPHC. 

1
(0xe0)

See also

RFC 6282, section 3.1

SIXLOWPAN_IPHC1_DISP

Dispatch for LOWPAN_IPHC. 

1
(0x60)

See also

RFC 6282, section 3.1

bool sixlowpan_frag_is(sixlowpan_frag_t * hdr)

Checks if a given fragment is a 6LoWPAN fragment.

Parameters

hdr:A 6LoWPAN fragmentation header.

Return values

  • true, if given fragment is a 6LoWPAN fragment.
  • false, if given fragment is not a 6LoWPAN fragment.
SIXLOWPAN_FRAG_SIZE_MASK

mask for datagram size 

1
(0x07ff)
bool sixlowpan_iphc_is(uint8_t * data)

Checks if datagram is an IPHC datagram.

Parameters

data:Data of a datagram. Must not be NULL.

Return values

  • true, if datagram is an IPHC datagram.
  • false, if datagram is not an IPHC datagram.
SIXLOWPAN_IPHC1_TF

Flag for Traffic Class & Flow Label elision (part of first byte of LOWPAN_IPHC). 

1
(0x18)

See also

RFC 6282, section 3.1.1

SIXLOWPAN_IPHC1_NH

Flag for Next Header Compression (part of first byte of LOWPAN_IPHC). 

1
(0x04)

See also

RFC 6282, section 3.1.1

SIXLOWPAN_IPHC1_HL

Flag for Hop Limit elision (part of first byte of LOWPAN_IPHC). 

1
(0x03)

See also

RFC 6282, section 3.1.1

SIXLOWPAN_IPHC2_CID_EXT

Flag for Context Identifier Extention (part of second byte of LOWPAN_IPHC). 

1
(0x80)

See also

RFC 6282, section 3.1.1

SIXLOWPAN_IPHC2_SAC

Flag for Source Address Compression (part of second byte of LOWPAN_IPHC). 

1
(0x40)

See also

RFC 6282, section 3.1.1

SIXLOWPAN_IPHC2_SAM

Bits for Source Address Mode (part of second byte of LOWPAN_IPHC). 

1
(0x30)

See also

RFC 6282, section 3.1.1

SIXLOWPAN_IPHC2_DAC

Flag for Destination Address Compression (part of second byte of LOWPAN_IPHC). 

1
(0x04)

See also

RFC 6282, section 3.1.1

SIXLOWPAN_IPHC2_DAM

Bits for Destination Address Mode (part of second byte of LOWPAN_IPHC). 

1
(0x03)

See also

RFC 6282, section 3.1.1

SIXLOWPAN_IPHC2_M

Flag for Multicast Compression (part of second byte of LOWPAN_IPHC). 

1
(0x08)

See also

RFC 6282, section 3.1.1

SIXLOWPAN_IPHC_HDR_LEN

6LoWPAN IPHC header length 

1
(2)
SIXLOWPAN_IPHC_CID_EXT_LEN

6LoWPAN context idendifier extension header length 

1
(1)
void sixlowpan_print(uint8_t * data, msp430_types.h::size_t size)

Prints 6LoWPAN dispatch to stdout.

Parameters

data:A 6LoWPAN frame.
size:Size of data.

struct sixlowpan_frag_t

General and 1st 6LoWPAN fragmentation header.

Note

The general 6LoWPAN fragmentation header refers to the first 4 bytes of a FRAG0 or FRAGN fragmentation header, which are identical.

See also

RFC 4944, section 5.3

byteorder.h::network_uint16_t disp_size

Dispatch and datagram size.

The 5 most significant bits are the dispatch, the remaining bits are the size.

byteorder.h::network_uint16_t tag

datagram tag

struct sixlowpan_frag_n_t

Subsequent 6LoWPAN fragmentation header.

See also

RFC 4944, section 5.3

byteorder.h::network_uint16_t disp_size

Dispatch and datagram size.

The 5 most significant bits are the dispatch, the remaining bits are the size.

byteorder.h::network_uint16_t tag

datagram tag

uint8_t offset

offset