inet6_rthdr_segments()

Updated: October 26, 2022

Count the segments in an IPv6 routing header

Synopsis:

#include <netinet/in.h>

int inet6_rthdr_segments(const struct cmsghdr *cmsg);

Arguments:

cmsg
A pointer to ancillary data containing a routing header.

Library:

libsocket

Use the -l socket option to qcc to link against this library.

Description:

This function returns the number of segments (addresses) contained in the routing header described by cmsg.

Based on:

Returns:

1 to 23
Success.
-1
An error occurred.

Classification:

RFC 2292

Safety:  
Cancellation point No
Interrupt handler No
Signal handler Yes
Thread Yes