rte_ip_frag.h File Reference

#include <stdint.h>
#include <stdio.h>
#include <rte_malloc.h>
#include <rte_memory.h>
#include <rte_ip.h>
#include <rte_byteorder.h>

Go to the source code of this file.

Data Structures
struct	rte_ip_frag_death_row
struct	ip_frag_tbl_stat
struct	rte_ip_frag_tbl

Macros
#define	IP_FRAG_DEATH_ROW_LEN   32
#define	RTE_IPV6_EHDR_MF_SHIFT   0

Enumerations
enum	{ IP_LAST_FRAG_IDX, IP_FIRST_FRAG_IDX, IP_MIN_FRAG_NUM, IP_MAX_FRAG_NUM = RTE_LIBRTE_IP_FRAG_MAX_FRAG }

Functions
int32_t	rte_ipv6_fragment_packet (struct rte_mbuf *pkt_in, struct rte_mbuf **pkts_out, uint16_t nb_pkts_out, uint16_t mtu_size, struct rte_mempool *pool_direct, struct rte_mempool *pool_indirect)
int32_t	rte_ipv4_fragment_packet (struct rte_mbuf *pkt_in, struct rte_mbuf **pkts_out, uint16_t nb_pkts_out, uint16_t mtu_size, struct rte_mempool *pool_direct, struct rte_mempool *pool_indirect)

Detailed Description

RTE IP Fragmentation and Reassembly

Implementation of IP packet fragmentation and reassembly.

Definition in file rte_ip_frag.h.

Macro Definition Documentation

#define IP_FRAG_DEATH_ROW_LEN   32

death row size (in packets)

Definition at line 94 of file rte_ip_frag.h.

#define RTE_IPV6_EHDR_MF_SHIFT   0

IPv6 fragment extension header

Definition at line 131 of file rte_ip_frag.h.

Enumeration Type Documentation

anonymous enum

Enumerator:

IP_LAST_FRAG_IDX	index of last fragment
IP_FIRST_FRAG_IDX	index of first fragment
IP_MIN_FRAG_NUM	minimum number of fragments
IP_MAX_FRAG_NUM	maximum number of fragments per packet

Definition at line 58 of file rte_ip_frag.h.

Function Documentation

int32_t rte_ipv6_fragment_packet	(	struct rte_mbuf *	pkt_in,
		struct rte_mbuf **	pkts_out,
		uint16_t	nb_pkts_out,
		uint16_t	mtu_size,
		struct rte_mempool *	pool_direct,
		struct rte_mempool *	pool_indirect
	)

This function implements the fragmentation of IPv6 packets.

Parameters

pkt_in	The input packet.
pkts_out	Array storing the output fragments.
nb_pkts_out	Number of fragments.
mtu_size	Size in bytes of the Maximum Transfer Unit (MTU) for the outgoing IPv6 datagrams. This value includes the size of the IPv6 header.
pool_direct	MBUF pool used for allocating direct buffers for the output fragments.
pool_indirect	MBUF pool used for allocating indirect buffers for the output fragments.

Returns

Upon successful completion - number of output fragments placed in the pkts_out array. Otherwise - (-1) * errno.

Examples:

ip_fragmentation/main.c.

int32_t rte_ipv4_fragment_packet	(	struct rte_mbuf *	pkt_in,
		struct rte_mbuf **	pkts_out,
		uint16_t	nb_pkts_out,
		uint16_t	mtu_size,
		struct rte_mempool *	pool_direct,
		struct rte_mempool *	pool_indirect
	)

IPv4 fragmentation.

This function implements the fragmentation of IPv4 packets.

Parameters

pkt_in	The input packet.
pkts_out	Array storing the output fragments.
nb_pkts_out	Number of fragments.
mtu_size	Size in bytes of the Maximum Transfer Unit (MTU) for the outgoing IPv4 datagrams. This value includes the size of the IPv4 header.
pool_direct	MBUF pool used for allocating direct buffers for the output fragments.
pool_indirect	MBUF pool used for allocating indirect buffers for the output fragments.

Returns

Upon successful completion - number of output fragments placed in the pkts_out array. Otherwise - (-1) * errno.

Examples:

ip_fragmentation/main.c.