Internal UDP functions

Collaboration diagram for Internal UDP functions:

Functions
void	nfq_udp_compute_checksum_ipv4 (struct udphdr *udph, struct iphdr *iph)
void	nfq_udp_compute_checksum_ipv6 (struct udphdr *udph, struct ip6_hdr *ip6h)

Detailed Description

Most user-space programs will never need these.

Function Documentation

nfq_udp_compute_checksum_ipv4()

void nfq_udp_compute_checksum_ipv4	(	struct udphdr *	udph,
		struct iphdr *	iph
	)

nfq_udp_compute_checksum_ipv4 - sets up the UDP checksum in a UDP/IPv4 packet

Parameters

udph	pointer to the UDP header
iph	pointer to the IPv4 header

Note

nfq_udp_mangle_ipv4() invokes this function. As long as developers always use nfq_udp_mangle_ipv4 when changing the content of a UDP message, there is no need to call nfq_udp_compute_checksum_ipv4.

Definition at line 108 of file udp.c.

nfq_udp_compute_checksum_ipv6()

void nfq_udp_compute_checksum_ipv6	(	struct udphdr *	udph,
		struct ip6_hdr *	ip6h
	)

nfq_udp_compute_checksum_ipv6 - sets up the UDP checksum in a UDP/IPv6 packet

Parameters

udph	pointer to the UDP header
ip6h	pointer to the IPv6 header

Note

nfq_udp_mangle_ipv6() invokes this function. As long as developers always use nfq_udp_mangle_ipv6 when changing the content of a UDP message, there is no need to call nfq_udp_compute_checksum_ipv6.

Definition at line 126 of file udp.c.