ipv6.h File Reference

The IPv6 header. More...

#include "rohc_utils.h"
#include <stdint.h>
#include <stddef.h>
#include "config.h"

Include dependency graph for ipv6.h:

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Go to the source code of this file.

Data Structures
struct	ipv6_addr
	The IPv6 address. More...
struct	ipv6_hdr
	The IPv6 header. More...
struct	ipv6_opt

Macros
#define	IPV6_ADDR_FORMAT   "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x"
#define	IPV6_ADDR_IN6(x)   IPV6_ADDR_RAW((x)->u8)
#define	IPV6_ADDR_RAW(x)
#define	IPV6_ADDR_CMP(x, y)
#define	IPV6_VERSION_MASK   0xf0000000U
#define	IPV6_TC_MASK   0x0ff00000U
#define	IPV6_FLOW_MASK   0x000fffffU
#define	IPV6_OPT_HDR_LEN_FIELD_MAX_VAL   0xffU
#define	IPV6_OPT_HDR_LEN_MAX   ((IPV6_OPT_HDR_LEN_FIELD_MAX_VAL + 1) * 8)
#define	IPV6_OPT_CTXT_LEN_MAX   (IPV6_OPT_HDR_LEN_MAX - 2)

Functions
static uint8_t	ipv6_get_tc (const struct ipv6_hdr *const ipv6)
	Get the Traffic Class (TC) of the given IPv6 packet. More...
static void	ipv6_set_tc (struct ipv6_hdr *const ipv6, const uint8_t tc)
	Set the Traffic Class (TC) of the given IPv6 packet. More...
static void	ipv6_set_dscp_ecn (struct ipv6_hdr *const ipv6, const uint8_t dscp, const uint8_t ecn)
	Set the DSCP and ECN of the given IPv6 packet. More...
static uint8_t	ipv6_get_dscp (const struct ipv6_hdr *const ipv6)
	Get the Differentiated Services Code Point (DSCP) of the given IPv6 packet. More...
static void	ipv6_set_dscp (struct ipv6_hdr *const ipv6, const uint8_t dscp)
	Set the Differentiated Services Code Point (DSCP) of the given IPv6 packet. More...
static uint32_t	ipv6_get_flow_label (const struct ipv6_hdr *const ipv6)
	Get the Flow Label of the given IPv6 packet. More...
static void	ipv6_set_flow_label (struct ipv6_hdr *const ipv6, const uint32_t flow_label)
	Set the Flow Label of the given IPv6 packet. More...
static size_t	ipv6_opt_get_length (const struct ipv6_opt *const opt)
	get the length (in bytes) of the IPv6 option header More...

Detailed Description

The IPv6 header.

Author

Didier Barvaux didie.nosp@m.r@ba.nosp@m.rvaux.nosp@m..org

Macro Definition Documentation

#define IPV6_ADDR_CMP	(		x,
			y
	)

Value:

((x)->u32[0] == (y)->u32[0] && (x)->u32[1] == (y)->u32[1] && \
         (x)->u32[2] == (y)->u32[2] && (x)->u32[3] == (y)->u32[3])

Compare two IPv6 addresses in (struct ipv6_addr *) format

#define IPV6_ADDR_FORMAT   "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x"

The format to print an IPv6 address

#define IPV6_ADDR_IN6

(

x

)

IPV6_ADDR_RAW((x)->u8)

The data to print an IPv6 address in (struct ipv6_addr *) format

#define IPV6_ADDR_RAW

(

x

)

Value:

(x)[0], (x)[1], (x)[2], (x)[3], (x)[4], (x)[5], (x)[6], (x)[7], \
        (x)[8], (x)[9], (x)[10], (x)[11], (x)[12], (x)[13], (x)[14], (x)[15]

The data to print an IPv6 address in raw format

#define IPV6_FLOW_MASK   0x000fffffU

The mask for the Flow Label field

#define IPV6_OPT_CTXT_LEN_MAX   (IPV6_OPT_HDR_LEN_MAX - 2)

The maximum length for the IPv6 extension header context

#define IPV6_OPT_HDR_LEN_FIELD_MAX_VAL   0xffU

The maximum value of the length field of one IPv6 extension header

#define IPV6_OPT_HDR_LEN_MAX   ((IPV6_OPT_HDR_LEN_FIELD_MAX_VAL + 1) * 8)

The maximum length of one IPv6 extension header

#define IPV6_TC_MASK   0x0ff00000U

The mask for the Traffic Class (TC) field

#define IPV6_VERSION_MASK   0xf0000000U

The mask for the Traffic Class (TC) field

Function Documentation

static uint8_t ipv6_get_dscp ( const struct ipv6_hdr *const  ipv6 )

inlinestatic

Get the Differentiated Services Code Point (DSCP) of the given IPv6 packet.

Parameters

ipv6	The header of the IPv6 packet

Returns

The 6-bit DSCP

static uint32_t ipv6_get_flow_label ( const struct ipv6_hdr *const  ipv6 )

inlinestatic

Get the Flow Label of the given IPv6 packet.

Parameters

ipv6	The header of the IPv6 packet

Returns

The 20-bit Flow Label

static uint8_t ipv6_get_tc ( const struct ipv6_hdr *const  ipv6 )

inlinestatic

Get the Traffic Class (TC) of the given IPv6 packet.

Parameters

ipv6	The header of the IPv6 packet

Returns

The 8-bit Traffic Class (TC)

static size_t ipv6_opt_get_length ( const struct ipv6_opt *const  opt )

inlinestatic

get the length (in bytes) of the IPv6 option header

Parameters

opt	The IPv6 option header

Returns

The length (in bytes) of the IPv6 option header

static void ipv6_set_dscp ( struct ipv6_hdr *const  ipv6, const uint8_t  dscp  )

inlinestatic

Set the Differentiated Services Code Point (DSCP) of the given IPv6 packet.

Parameters

[in,out]	ipv6	The header of the IPv6 packet
	dscp	The 6-bit DSCP

static void ipv6_set_dscp_ecn ( struct ipv6_hdr *const  ipv6, const uint8_t  dscp, const uint8_t  ecn  )

inlinestatic

Set the DSCP and ECN of the given IPv6 packet.

Parameters

[in,out]	ipv6	The header of the IPv6 packet
	dscp	The 6-bit DSCP
	ecn	The 2-bit ECN

static void ipv6_set_flow_label ( struct ipv6_hdr *const  ipv6, const uint32_t  flow_label  )

inlinestatic

Set the Flow Label of the given IPv6 packet.

Parameters

[in,out]	ipv6	The header of the IPv6 packet
	flow_label	The 20-bit Flow Label

static void ipv6_set_tc ( struct ipv6_hdr *const  ipv6, const uint8_t  tc  )

inlinestatic

Set the Traffic Class (TC) of the given IPv6 packet.

Parameters

[in,out]	ipv6	The header of the IPv6 packet
	tc	The 8-bit Traffic Class (TC)