diff --git a/doc/doxygen.conf b/doc/doxygen.conf
index d1032f231..6a1cb3e93 100644
--- a/doc/doxygen.conf
+++ b/doc/doxygen.conf
@@ -674,7 +674,9 @@ IMAGE_PATH             = doc
 # If FILTER_PATTERNS is specified, this tag will be
 # ignored.
 
-INPUT_FILTER           = doc/kerneldoc2doxygen.pl
+# You can download the filter tool from
+# http://w1.fi/tools/kerneldoc2doxygen-hostap.pl
+INPUT_FILTER           = kerneldoc2doxygen-hostap.pl
 
 # The FILTER_PATTERNS tag can be used to specify filters on a per file pattern
 # basis.
diff --git a/doc/kerneldoc2doxygen.pl b/doc/kerneldoc2doxygen.pl
deleted file mode 100755
index 68c4aed22..000000000
--- a/doc/kerneldoc2doxygen.pl
+++ /dev/null
@@ -1,134 +0,0 @@
-#!/usr/bin/perl -w
-#
-##########################################################################
-# Convert kernel-doc style comments to Doxygen comments.
-##########################################################################
-#
-# This script reads a C source file from stdin, and writes
-# to stdout.  Normal usage:
-#
-# $ mv file.c file.c.gtkdoc
-# $ kerneldoc2doxygen.pl <file.c.gtkdoc >file.c
-#
-# Or to do the same thing with multiple files:
-# $ perl -i.gtkdoc kerneldoc2doxygen.pl *.c *.h
-#
-# This script may also be suitable for use as a Doxygen input filter,
-# but that has not been tested.
-#
-# Back up your source files before using this script!!
-#
-##########################################################################
-# Copyright (C) 2003 Jonathan Foster <jon@jon-foster.co.uk>
-# Copyright (C) 2005-2008 Jouni Malinen <j@w1.fi>
-# (modified for kerneldoc format used in wpa_supplicant)
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-# or look at http://www.gnu.org/licenses/gpl.html
-##########################################################################
-
-
-##########################################################################
-#
-# This function converts a single comment from gtk-doc to Doxygen format.
-# The parameter does not include the opening or closing lines
-# (i.e. given a comment like this:
-#    "/**\n"
-#    " * FunctionName:\n"
-#    " * @foo: This describes the foo parameter\n"
-#    " * @bar: This describes the bar parameter\n"
-#    " * @Returns: This describes the return value\n"
-#    " *\n"
-#    " * This describes the function.\n"
-#    " */\n"
-# This function gets:
-#    " * FunctionName:\n"
-#    " * @foo: This describes the foo parameter\n"
-#    " * @bar: This describes the bar parameter\n"
-#    " * @Returns: This describes the return value\n"
-#    " *\n"
-#    " * This describes the function.\n"
-# And it returns:
-#    " * This describes the function.\n"
-#    " *\n"
-#    " * @param foo This describes the foo parameter\n"
-#    " * @param bar This describes the bar parameter\n"
-#    " * @return This describes the return value\n"
-# )
-#
-sub fixcomment {
-    $t = $_[0];
-
-    # wpa_supplicant -> %wpa_supplicant except for struct wpa_supplicant
-    $t =~ s/struct wpa_supplicant/struct STRUCTwpa_supplicant/sg;
-    $t =~ s/ wpa_supplicant/ \%wpa_supplicant/sg;
-    $t =~ s/struct STRUCTwpa_supplicant/struct wpa_supplicant/sg;
-
-    # " * func: foo" --> "\brief foo\n"
-    # " * struct bar: foo" --> "\brief foo\n"
-    # If this fails, not a kernel-doc comment ==> return unmodified.
-    ($t =~ s/^[\t ]*\*[\t ]*(struct )?([^ \t\n]*) - ([^\n]*)/\\brief $3\n/s)
-      or return $t;
-
-    # " * Returns: foo" --> "\return foo"
-    $t =~ s/\n[\t ]*\*[\t ]*Returns:/\n\\return/sig;
-
-    # " * @foo: bar" --> "\param foo bar"
-    # Handle two common typos: No ":", or "," instead of ":".
-    $t =~ s/\n[\t ]*\*[\t ]*\@([^ :,]*)[:,]?[\t ]*/\n\\param $1 /sg;
-
-    return $t;
-}
-
-##########################################################################
-# Start of main code
-
-# Read entire stdin into memory - one multi-line string.
-$_ = do { local $/; <> };
-
-s{^/\*\n \*}{/\*\* \\file\n\\brief};
-s{ \* Copyright}{\\par Copyright\nCopyright};
-
-# Fix any comments like "/*************" so they don't match.
-# "/***" ===> "/* *"
-s{/\*\*\*}{/\* \*}gs;
-
-# The main comment-detection code.
-s{
-    (               # $1 = Open comment
-        /\*\*       # Open comment
-        (?!\*)      # Do not match /*** (redundant due to fixup above).
-        [\t ]*\n?   # If 1st line is whitespace, match the lot (including the newline).
-    )
-    (.*?)           # $2 = Body of comment (multi-line)
-    (               # $3 = Close comment
-        (           # If possible, match the whitespace before the close-comment
-            (?<=\n) # This part only matches after a newline
-            [\t ]*  # Eat whitespace
-        )?
-        \*/         # Close comment
-    )
- }
- {
-    $1 . fixcomment($2) . $3
- }gesx;
-# ^^^^ Modes: g - Global, match all occurrences.
-#             e - Evaluate the replacement as an expression.
-#             s - Single-line - allows the pattern to match across newlines.
-#             x - eXtended pattern, ignore embedded whitespace
-#                 and allow comments.
-
-# Write results to stdout
-print $_;
-