6LoWPAN fragmentation buffer

Buffer for asynchronous 6LoWPAN fragmentation. More...

Detailed Description

Buffer for asynchronous 6LoWPAN fragmentation.

Files
file	fb.h
	Fragmentation buffer definitions.

Data Structures
struct	gnrc_sixlowpan_frag_fb_t
	6LoWPAN fragmentation buffer entry. More...

Macros
#define	GNRC_SIXLOWPAN_FRAG_FB_SND_MSG   (0x0225)
	Message type for passing one 6LoWPAN fragment down the network stack.

Functions
void	gnrc_sixlowpan_frag_fb_reset (void)
	Reset fragmentation buffer. More...
gnrc_sixlowpan_frag_fb_t *	gnrc_sixlowpan_frag_fb_get (void)
	Allocates a fragmentation buffer entry. More...
gnrc_sixlowpan_frag_fb_t *	gnrc_sixlowpan_frag_fb_get_by_tag (uint16_t tag)
	Get an existing fragmentation buffer entry by a given tag. More...
uint16_t	gnrc_sixlowpan_frag_fb_next_tag (void)
	Generate a new datagram tag for sending. More...
static bool	gnrc_sixlowpan_frag_fb_send (gnrc_sixlowpan_frag_fb_t *fbuf)
	Sends a message to pass a further fragment down the network stack. More...

Function Documentation

gnrc_sixlowpan_frag_fb_get()

gnrc_sixlowpan_frag_fb_t* gnrc_sixlowpan_frag_fb_get

(

void

)

Allocates a fragmentation buffer entry.

Returns

A fragmentation buffer entry if available

NULL, otherwise

gnrc_sixlowpan_frag_fb_get_by_tag()

gnrc_sixlowpan_frag_fb_t* gnrc_sixlowpan_frag_fb_get_by_tag

(

uint16_t

tag

)

Get an existing fragmentation buffer entry by a given tag.

Parameters

[in]

tag

Tag to search for.

Returns

a fragmentation buffer entry if one with tag exists.

NULL, if no fragmentation buffer entry can be found.

gnrc_sixlowpan_frag_fb_next_tag()

uint16_t gnrc_sixlowpan_frag_fb_next_tag

(

void

)

Generate a new datagram tag for sending.

Returns

A new datagram tag.

gnrc_sixlowpan_frag_fb_reset()

void gnrc_sixlowpan_frag_fb_reset

(

void

)

Reset fragmentation buffer.

Note

Only available with test

gnrc_sixlowpan_frag_fb_send()

static bool gnrc_sixlowpan_frag_fb_send ( gnrc_sixlowpan_frag_fb_t *  fbuf )

inlinestatic

Sends a message to pass a further fragment down the network stack.

See also

GNRC_SIXLOWPAN_MSG_FRAG_SND

Parameters

[in]

fbuf

A fragmentation buffer entry ]

Returns

true, when the message was sent

false when sending the message failed.

Definition at line 125 of file fb.h.