tlv-decoder.c File Reference

#include "tlv-decoder.h"

Functions
void	TlvDecoder_Truncate (TlvDecoder *d)
	Truncate mbuf to the remaining bytes.
void	TlvDecoder_Copy_ (TlvDecoder *d, uint8_t *output, uint16_t count)
struct rte_mbuf *	TlvDecoder_Clone (TlvDecoder *d, uint32_t count, struct rte_mempool *indirectMp)
	Clone next count octets to indirect mbufs.
void	TlvDecoder_Fragment (TlvDecoder *d, uint32_t count, struct rte_mbuf *frames[], uint32_t *fragIndex, uint32_t fragCount, uint16_t fragSize, uint16_t headroom)
	Copy next count octets to fragments.
const uint8_t *	TlvDecoder_Linearize_NonContiguous_ (TlvDecoder *d, uint16_t count)

Function Documentation

TlvDecoder_Clone()

struct rte_mbuf * TlvDecoder_Clone	(	TlvDecoder *	d,
		uint32_t	count,
		struct rte_mempool *	indirectMp )

Clone next count octets to indirect mbufs.

Returns

indirect mbufs.

Return values

NULL	allocation failure.

Precondition

Decoder has no less than count remaining octets.

Postcondition

Decoder is advanced by count octets.

TlvDecoder_Copy_()

void TlvDecoder_Copy_	(	TlvDecoder *	d,
		uint8_t *	output,
		uint16_t	count )

TlvDecoder_Fragment()

void TlvDecoder_Fragment	(	TlvDecoder *	d,
		uint32_t	count,
		struct rte_mbuf *	frames[],
		uint32_t *	fragIndex,
		uint32_t	fragCount,
		uint16_t	fragSize,
		uint16_t	headroom )

Copy next count octets to fragments.

Parameters

	frames	vector of fragments. They should not be chained.
[in,out]	fragIndex	pointer to first FragIndex, updated as last FragIndex.
	fragCount	correctly calculated FragCount.
	fragSize	maximum fragment payload size.
	headroom	headroom for subsequent fragments.

Precondition

Each segment has at least headroom+fragSize dataroom.

First fragment frames[*fragIndex] has initialized headroom and may contain payload.

Subsequent fragments are empty.

Postcondition

First fragment is appended up to headroom+fragSize offset.

TlvDecoder_Linearize_NonContiguous_()

const uint8_t * TlvDecoder_Linearize_NonContiguous_	(	TlvDecoder *	d,
		uint16_t	count )

TlvDecoder_Truncate()

void TlvDecoder_Truncate

(

TlvDecoder *

d

)

Truncate mbuf to the remaining bytes.

Parameters

d	decoder. It shall have a uniquely owned, possibly segmented, direct mbuf. Its remaining length shall be non-zero.

Postcondition

d cannot be further used.