inet6_rth_segments() — Return number of segments contained in header

Standards

Format

#define _OPEN_SYS_SOCK_IPV6
#include <netinet/in.h>

int inet6_rth_segments(const void *bp);

General description

inet6_rth_segments() returns the number of segments (addresses) contained in the routing header described by bp.

Returned value

If successful, inet6_rth_segments() returns the number of segments or 0, if there are none in the header.

Upon failure, returns -1 and errno is set to one of the following:

EINVAL If one of the following is true:

Related information

• netinet/in.h
• inet6_rth_add() — Add an IPv6 address to end of the routing header
• inet6_rth_getaddr() — Return pointer to the IPv6 address specified
• inet6_rth_init() — Initialize an IPv6 routing header buffer
• inet6_rth_reverse() — Reverse the order of the addresses
• inet6_rth_space() — Return number of bytes for a routing header