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inet6_opt_init(3)
NAME
  inet6_opt_init - Return the length of an IPv6 extension header with no
  options and initialize the header

SYNOPSIS
  #include <netinet/ip6.h>

  int inet6_opt_init(
	  void *extbuf,
	  size_t extlen );

LIBRARY
  Standard C Library (libc)

PARAMETERS
  extbuf
      Points to a buffer that contains an extension header. This is either a
      valid pointer or a NULL pointer.

  extlen
      Specifies the length of the extension header to initialize. Valid
      values are 0 and any number that is a multiple of 8.

DESCRIPTION
  The inet6_opt_init() function when called with extbuf as a NULL pointer and
  extlen as 0, returns the number of bytes in an extension header that has no
  options.

  If you specify extbuf as a valid pointer and extlen as a number that is a
  multiple of 8, the function returns the same information as in the previous
  case, initializes the extension header, and sets the length field.

RETURN VALUES
  Upon successful completion, the inet6_opt_init() function returns the
  number of bytes in an extension header with no options.  Upon failure, it
  returns a -1.

SEE ALSO
  Functions: inet6_opt_append(3), inet6_opt_find(3), inet6_opt_finish(3),
  inet6_opt_get_val(3), inet6_opt_next(3), inet6_opt_set_val(3).

  Network Programmer's Guide

Index for Section 3

Alphabetical listing for I

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