lp.c File Reference

#include "lp.h"
#include "../core/base16.h"
#include "../core/logger.h"
#include "tlv-decoder.h"
#include "tlv-encoder.h"

Functions
const char *	LpPitToken_ToString (const LpPitToken *token)
	Print PIT token as string for logging. More...
bool	LpHeader_Parse (LpHeader *lph, struct rte_mbuf *pkt)
	Parse NDNLPv2 header and strip from mbuf. More...
void	LpHeader_Prepend (struct rte_mbuf *pkt, const LpL3 *l3, const LpL2 *l2)
	Prepend NDNLPv2 header to mbuf. More...

Function Documentation

LpHeader_Parse()

bool LpHeader_Parse	(	LpHeader *	lph,
		struct rte_mbuf *	pkt
	)

Parse NDNLPv2 header and strip from mbuf.

Parameters

pkt	a uniquely owned, possibly segmented, direct mbuf.

Returns

whether success.

Postcondition

pkt contains only (fragment of) network layer packet.

This function recognizes these NDNLPv2 features:

• indexed fragmentation-reassembly
• PIT token
• network nack
• congestion mark

This function does not check whether header fields are applicable to network layer packet type, because network layer type is unknown before reassembly. For example, it would accept Nack header on Data packet.

LpHeader_Prepend()

void LpHeader_Prepend	(	struct rte_mbuf *	pkt,
		const LpL3 *	l3,
		const LpL2 *	l2
	)

Prepend NDNLPv2 header to mbuf.

Parameters

pkt	target mbuf, must have enough headroom.

Precondition

pkt contains (fragment of) network layer packet.

Postcondition

pkt contains LpPacket.

LpPitToken_ToString()

const char* LpPitToken_ToString

(

const LpPitToken *

token

)

Print PIT token as string for logging.

Returns

see DebugString_Get