Context buffer for stateful 6LoWPAN address compression. More...

Detailed Description

Context buffer for stateful 6LoWPAN address compression.

Data Structures
struct	gnrc_sixlowpan_ctx_t
	Entry in the 6LoWPAN context buffer. More...

Macros
#define	GNRC_SIXLOWPAN_CTX_SIZE (16)
	maximum number of entries in context buffer

Functions
gnrc_sixlowpan_ctx_t *	gnrc_sixlowpan_ctx_lookup_addr (const ipv6_addr_t *addr)
	Gets a context matching the given IPv6 address best with its prefix. More...

gnrc_sixlowpan_ctx_t *	gnrc_sixlowpan_ctx_lookup_id (uint8_t id)
	Gets context by ID. More...

gnrc_sixlowpan_ctx_t *	gnrc_sixlowpan_ctx_update (uint8_t id, const ipv6_addr_t *prefix, uint8_t prefix_len, uint16_t ltime, bool comp)
	Updates (or adds if currently not registered) a context. More...

void	gnrc_sixlowpan_ctx_reset (void)
	Resets the whole context buffer.

Context flags.
Flags to set in gnrc_sixlowpan_ctx_t::flags_id.
#define	GNRC_SIXLOWPAN_CTX_FLAGS_CID_MASK (0x0f)
	mask for the Context ID.

#define	GNRC_SIXLOWPAN_CTX_FLAGS_COMP (0x10)
	Use context for compression.

Function Documentation

gnrc_sixlowpan_ctx_t* gnrc_sixlowpan_ctx_lookup_addr ( const ipv6_addr_t * addr )

Gets a context matching the given IPv6 address best with its prefix.

Parameters

[in] addr An IPv6 address.

Returns: The context associated with the best prefix for addr.; NULL if there is no such context.

gnrc_sixlowpan_ctx_t* gnrc_sixlowpan_ctx_lookup_id ( uint8_t id )

Gets context by ID.

Parameters

[in] id A context ID.

Returns: The context associated with id.; NULL if there is no such context.

gnrc_sixlowpan_ctx_t* gnrc_sixlowpan_ctx_update	(	uint8_t	id,
		const ipv6_addr_t *	prefix,
		uint8_t	prefix_len,
		uint16_t	ltime,
		bool	comp
	)

Updates (or adds if currently not registered) a context.

Parameters

[in]	id	The ID for the context. Must be < GNRC_SIXLOWPAN_CTX_SIZE.
[in]	prefix	The prefix for the context.
[in]	prefix_len	Length of `prefix` in bits. Must be > 0.
[in]	ltime	New lifetime of the context. `comp` will be implicitly set to `false` if `ltime` == 0.
[in]	comp	Use for compression if true, do not use for compression, but still for decompression if false.