IPv6 helper functions

Functions
struct ip6_hdr *	nfq_ip6_get_hdr (struct pkt_buff *pktb)
	nfq_ip6_get_hdr - get IPv6 header More...
	EXPORT_SYMBOL (nfq_ip6_get_hdr)
int	nfq_ip6_set_transport_header (struct pkt_buff *pktb, struct ip6_hdr *ip6h, uint8_t target)
	nfq_ip6_set_transport_header - set transport header pointer for IPv6 packet More...
	EXPORT_SYMBOL (nfq_ip6_set_transport_header)
int	nfq_ip6_snprintf (char *buf, size_t size, const struct ip6_hdr *ip6h)
	nfq_ip6_snprintf - print IPv6 header into one buffer in iptables LOG format More...
	EXPORT_SYMBOL (nfq_ip6_snprintf)

Detailed Description

Function Documentation

EXPORT_SYMBOL

(

nfq_ip6_get_hdr

)

EXPORT_SYMBOL

(

nfq_ip6_set_transport_header

)

EXPORT_SYMBOL

(

nfq_ip6_snprintf

)

struct ip6_hdr* nfq_ip6_get_hdr

(

struct pkt_buff *

pktb

)

nfq_ip6_get_hdr - get IPv6 header

Parameters

pktb	pointer to user-space network packet buffer

This funcion returns NULL if an invalid header is found. On sucess, it returns a valid pointer to the header.

References pkt_buff::network_header, NULL, and pkt_buff::tail.

int nfq_ip6_set_transport_header	(	struct pkt_buff *	pktb,
		struct ip6_hdr *	ip6h,
		uint8_t	target
	)

nfq_ip6_set_transport_header - set transport header pointer for IPv6 packet

Parameters

pktb	pointer to user-space network packet buffer
ip6h	pointer to IPv6 header
target	protocol number to find transport header (ie. IPPROTO_*)

This function returns 1 if the protocol has been found and the transport header has been set. Otherwise, it returns 0.

References NULL, offsetof, pkt_buff::tail, and pkt_buff::transport_header.

int nfq_ip6_snprintf	(	char *	buf,
		size_t	size,
		const struct ip6_hdr *	ip6h
	)

nfq_ip6_snprintf - print IPv6 header into one buffer in iptables LOG format

Parameters

buf	pointer to buffer that is used to print the object
size	size of the buffer (or remaining room in it).
ip6_hdr	pointer to a valid IPv6 header.