ppp: Move the PPP drivers

Move the PPP drivers into drivers/net/ppp/ and make the
necessary Kconfig and Makefile changes.

CC: Paul Mackerras <paulus@samba.org>
CC: Frank Cusack <fcusack@fcusack.com>
CC: Michal Ostrowski <mostrows@speakeasy.net>
CC: Michal Ostrowski <mostrows@earthlink.net>
CC: Dmitry Kozlov <xeb@mail.ru>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 653 deletions

diff --git a/drivers/net/ppp_deflate.c b/drivers/net/ppp_deflate.c
deleted file mode 100644
index 1dbdf82a6dfd..000000000000
--- a/drivers/net/ppp_deflate.c
+++ /dev/null
@@ -1,653 +0,0 @@
-/*
- *  ==FILEVERSION 980319==
- *
- * ppp_deflate.c - interface the zlib procedures for Deflate compression
- * and decompression (as used by gzip) to the PPP code.
- * This version is for use with Linux kernel 1.3.X.
- *
- * Copyright (c) 1994 The Australian National University.
- * All rights reserved.
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation is hereby granted, provided that the above copyright
- * notice appears in all copies.  This software is provided without any
- * warranty, express or implied. The Australian National University
- * makes no representations about the suitability of this software for
- * any purpose.
- *
- * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
- * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
- * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
- * THE AUSTRALIAN NATIONAL UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
- * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
- * OR MODIFICATIONS.
- *
- * From: deflate.c,v 1.1 1996/01/18 03:17:48 paulus Exp
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/string.h>
-
-#include <linux/ppp_defs.h>
-#include <linux/ppp-comp.h>
-
-#include <linux/zlib.h>
-#include <asm/unaligned.h>
-
-/*
- * State for a Deflate (de)compressor.
- */
-struct ppp_deflate_state {
-    int		seqno;
-    int		w_size;
-    int		unit;
-    int		mru;
-    int		debug;
-    z_stream	strm;
-    struct compstat stats;
-};
-
-#define DEFLATE_OVHD	2		/* Deflate overhead/packet */
-
-static void	*z_comp_alloc(unsigned char *options, int opt_len);
-static void	*z_decomp_alloc(unsigned char *options, int opt_len);
-static void	z_comp_free(void *state);
-static void	z_decomp_free(void *state);
-static int	z_comp_init(void *state, unsigned char *options,
-				 int opt_len,
-				 int unit, int hdrlen, int debug);
-static int	z_decomp_init(void *state, unsigned char *options,
-				   int opt_len,
-				   int unit, int hdrlen, int mru, int debug);
-static int	z_compress(void *state, unsigned char *rptr,
-				unsigned char *obuf,
-				int isize, int osize);
-static void	z_incomp(void *state, unsigned char *ibuf, int icnt);
-static int	z_decompress(void *state, unsigned char *ibuf,
-				int isize, unsigned char *obuf, int osize);
-static void	z_comp_reset(void *state);
-static void	z_decomp_reset(void *state);
-static void	z_comp_stats(void *state, struct compstat *stats);
-
-/**
- *	z_comp_free - free the memory used by a compressor
- *	@arg:	pointer to the private state for the compressor.
- */
-static void z_comp_free(void *arg)
-{
-	struct ppp_deflate_state *state = (struct ppp_deflate_state *) arg;
-
-	if (state) {
-		zlib_deflateEnd(&state->strm);
-		vfree(state->strm.workspace);
-		kfree(state);
-	}
-}
-
-/**
- *	z_comp_alloc - allocate space for a compressor.
- *	@options: pointer to CCP option data
- *	@opt_len: length of the CCP option at @options.
- *
- *	The @options pointer points to the a buffer containing the
- *	CCP option data for the compression being negotiated.  It is
- *	formatted according to RFC1979, and describes the window
- *	size that the peer is requesting that we use in compressing
- *	data to be sent to it.
- *
- *	Returns the pointer to the private state for the compressor,
- *	or NULL if we could not allocate enough memory.
- */
-static void *z_comp_alloc(unsigned char *options, int opt_len)
-{
-	struct ppp_deflate_state *state;
-	int w_size;
-
-	if (opt_len != CILEN_DEFLATE ||
-	    (options[0] != CI_DEFLATE && options[0] != CI_DEFLATE_DRAFT) ||
-	    options[1] != CILEN_DEFLATE ||
-	    DEFLATE_METHOD(options[2]) != DEFLATE_METHOD_VAL ||
-	    options[3] != DEFLATE_CHK_SEQUENCE)
-		return NULL;
-	w_size = DEFLATE_SIZE(options[2]);
-	if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE)
-		return NULL;
-
-	state = kzalloc(sizeof(*state),
-						     GFP_KERNEL);
-	if (state == NULL)
-		return NULL;
-
-	state->strm.next_in   = NULL;
-	state->w_size         = w_size;
-	state->strm.workspace = vmalloc(zlib_deflate_workspacesize(-w_size, 8));
-	if (state->strm.workspace == NULL)
-		goto out_free;
-
-	if (zlib_deflateInit2(&state->strm, Z_DEFAULT_COMPRESSION,
-			 DEFLATE_METHOD_VAL, -w_size, 8, Z_DEFAULT_STRATEGY)
-	    != Z_OK)
-		goto out_free;
-	return (void *) state;
-
-out_free:
-	z_comp_free(state);
-	return NULL;
-}
-
-/**
- *	z_comp_init - initialize a previously-allocated compressor.
- *	@arg:	pointer to the private state for the compressor
- *	@options: pointer to the CCP option data describing the
- *		compression that was negotiated with the peer
- *	@opt_len: length of the CCP option data at @options
- *	@unit:	PPP unit number for diagnostic messages
- *	@hdrlen: ignored (present for backwards compatibility)
- *	@debug:	debug flag; if non-zero, debug messages are printed.
- *
- *	The CCP options described by @options must match the options
- *	specified when the compressor was allocated.  The compressor
- *	history is reset.  Returns 0 for failure (CCP options don't
- *	match) or 1 for success.
- */
-static int z_comp_init(void *arg, unsigned char *options, int opt_len,
-		       int unit, int hdrlen, int debug)
-{
-	struct ppp_deflate_state *state = (struct ppp_deflate_state *) arg;
-
-	if (opt_len < CILEN_DEFLATE ||
-	    (options[0] != CI_DEFLATE && options[0] != CI_DEFLATE_DRAFT) ||
-	    options[1] != CILEN_DEFLATE ||
-	    DEFLATE_METHOD(options[2]) != DEFLATE_METHOD_VAL ||
-	    DEFLATE_SIZE(options[2]) != state->w_size ||
-	    options[3] != DEFLATE_CHK_SEQUENCE)
-		return 0;
-
-	state->seqno = 0;
-	state->unit  = unit;
-	state->debug = debug;
-
-	zlib_deflateReset(&state->strm);
-
-	return 1;
-}
-
-/**
- *	z_comp_reset - reset a previously-allocated compressor.
- *	@arg:	pointer to private state for the compressor.
- *
- *	This clears the history for the compressor and makes it
- *	ready to start emitting a new compressed stream.
- */
-static void z_comp_reset(void *arg)
-{
-	struct ppp_deflate_state *state = (struct ppp_deflate_state *) arg;
-
-	state->seqno = 0;
-	zlib_deflateReset(&state->strm);
-}
-
-/**
- *	z_compress - compress a PPP packet with Deflate compression.
- *	@arg:	pointer to private state for the compressor
- *	@rptr:	uncompressed packet (input)
- *	@obuf:	compressed packet (output)
- *	@isize:	size of uncompressed packet
- *	@osize:	space available at @obuf
- *
- *	Returns the length of the compressed packet, or 0 if the
- *	packet is incompressible.
- */
-static int z_compress(void *arg, unsigned char *rptr, unsigned char *obuf,
-	       int isize, int osize)
-{
-	struct ppp_deflate_state *state = (struct ppp_deflate_state *) arg;
-	int r, proto, off, olen, oavail;
-	unsigned char *wptr;
-
-	/*
-	 * Check that the protocol is in the range we handle.
-	 */
-	proto = PPP_PROTOCOL(rptr);
-	if (proto > 0x3fff || proto == 0xfd || proto == 0xfb)
-		return 0;
-
-	/* Don't generate compressed packets which are larger than
-	   the uncompressed packet. */
-	if (osize > isize)
-		osize = isize;
-
-	wptr = obuf;
-
-	/*
-	 * Copy over the PPP header and store the 2-byte sequence number.
-	 */
-	wptr[0] = PPP_ADDRESS(rptr);
-	wptr[1] = PPP_CONTROL(rptr);
-	put_unaligned_be16(PPP_COMP, wptr + 2);
-	wptr += PPP_HDRLEN;
-	put_unaligned_be16(state->seqno, wptr);
-	wptr += DEFLATE_OVHD;
-	olen = PPP_HDRLEN + DEFLATE_OVHD;
-	state->strm.next_out = wptr;
-	state->strm.avail_out = oavail = osize - olen;
-	++state->seqno;
-
-	off = (proto > 0xff) ? 2 : 3;	/* skip 1st proto byte if 0 */
-	rptr += off;
-	state->strm.next_in = rptr;
-	state->strm.avail_in = (isize - off);
-
-	for (;;) {
-		r = zlib_deflate(&state->strm, Z_PACKET_FLUSH);
-		if (r != Z_OK) {
-			if (state->debug)
-				printk(KERN_ERR
-				       "z_compress: deflate returned %d\n", r);
-			break;
-		}
-		if (state->strm.avail_out == 0) {
-			olen += oavail;
-			state->strm.next_out = NULL;
-			state->strm.avail_out = oavail = 1000000;
-		} else {
-			break;		/* all done */
-		}
-	}
-	olen += oavail - state->strm.avail_out;
-
-	/*
-	 * See if we managed to reduce the size of the packet.
-	 */
-	if (olen < isize) {
-		state->stats.comp_bytes += olen;
-		state->stats.comp_packets++;
-	} else {
-		state->stats.inc_bytes += isize;
-		state->stats.inc_packets++;
-		olen = 0;
-	}
-	state->stats.unc_bytes += isize;
-	state->stats.unc_packets++;
-
-	return olen;
-}
-
-/**
- *	z_comp_stats - return compression statistics for a compressor
- *		or decompressor.
- *	@arg:	pointer to private space for the (de)compressor
- *	@stats:	pointer to a struct compstat to receive the result.
- */
-static void z_comp_stats(void *arg, struct compstat *stats)
-{
-	struct ppp_deflate_state *state = (struct ppp_deflate_state *) arg;
-
-	*stats = state->stats;
-}
-
-/**
- *	z_decomp_free - Free the memory used by a decompressor.
- *	@arg:	pointer to private space for the decompressor.
- */
-static void z_decomp_free(void *arg)
-{
-	struct ppp_deflate_state *state = (struct ppp_deflate_state *) arg;
-
-	if (state) {
-		zlib_inflateEnd(&state->strm);
-		vfree(state->strm.workspace);
-		kfree(state);
-	}
-}
-
-/**
- *	z_decomp_alloc - allocate space for a decompressor.
- *	@options: pointer to CCP option data
- *	@opt_len: length of the CCP option at @options.
- *
- *	The @options pointer points to the a buffer containing the
- *	CCP option data for the compression being negotiated.  It is
- *	formatted according to RFC1979, and describes the window
- *	size that we are requesting the peer to use in compressing
- *	data to be sent to us.
- *
- *	Returns the pointer to the private state for the decompressor,
- *	or NULL if we could not allocate enough memory.
- */
-static void *z_decomp_alloc(unsigned char *options, int opt_len)
-{
-	struct ppp_deflate_state *state;
-	int w_size;
-
-	if (opt_len != CILEN_DEFLATE ||
-	    (options[0] != CI_DEFLATE && options[0] != CI_DEFLATE_DRAFT) ||
-	    options[1] != CILEN_DEFLATE ||
-	    DEFLATE_METHOD(options[2]) != DEFLATE_METHOD_VAL ||
-	    options[3] != DEFLATE_CHK_SEQUENCE)
-		return NULL;
-	w_size = DEFLATE_SIZE(options[2]);
-	if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE)
-		return NULL;
-
-	state = kzalloc(sizeof(*state), GFP_KERNEL);
-	if (state == NULL)
-		return NULL;
-
-	state->w_size         = w_size;
-	state->strm.next_out  = NULL;
-	state->strm.workspace = vmalloc(zlib_inflate_workspacesize());
-	if (state->strm.workspace == NULL)
-		goto out_free;
-
-	if (zlib_inflateInit2(&state->strm, -w_size) != Z_OK)
-		goto out_free;
-	return (void *) state;
-
-out_free:
-	z_decomp_free(state);
-	return NULL;
-}
-
-/**
- *	z_decomp_init - initialize a previously-allocated decompressor.
- *	@arg:	pointer to the private state for the decompressor
- *	@options: pointer to the CCP option data describing the
- *		compression that was negotiated with the peer
- *	@opt_len: length of the CCP option data at @options
- *	@unit:	PPP unit number for diagnostic messages
- *	@hdrlen: ignored (present for backwards compatibility)
- *	@mru:	maximum length of decompressed packets
- *	@debug:	debug flag; if non-zero, debug messages are printed.
- *
- *	The CCP options described by @options must match the options
- *	specified when the decompressor was allocated.  The decompressor
- *	history is reset.  Returns 0 for failure (CCP options don't
- *	match) or 1 for success.
- */
-static int z_decomp_init(void *arg, unsigned char *options, int opt_len,
-			 int unit, int hdrlen, int mru, int debug)
-{
-	struct ppp_deflate_state *state = (struct ppp_deflate_state *) arg;
-
-	if (opt_len < CILEN_DEFLATE ||
-	    (options[0] != CI_DEFLATE && options[0] != CI_DEFLATE_DRAFT) ||
-	    options[1] != CILEN_DEFLATE ||
-	    DEFLATE_METHOD(options[2]) != DEFLATE_METHOD_VAL ||
-	    DEFLATE_SIZE(options[2]) != state->w_size ||
-	    options[3] != DEFLATE_CHK_SEQUENCE)
-		return 0;
-
-	state->seqno = 0;
-	state->unit  = unit;
-	state->debug = debug;
-	state->mru   = mru;
-
-	zlib_inflateReset(&state->strm);
-
-	return 1;
-}
-
-/**
- *	z_decomp_reset - reset a previously-allocated decompressor.
- *	@arg:	pointer to private state for the decompressor.
- *
- *	This clears the history for the decompressor and makes it
- *	ready to receive a new compressed stream.
- */
-static void z_decomp_reset(void *arg)
-{
-	struct ppp_deflate_state *state = (struct ppp_deflate_state *) arg;
-
-	state->seqno = 0;
-	zlib_inflateReset(&state->strm);
-}
-
-/**
- *	z_decompress - decompress a Deflate-compressed packet.
- *	@arg:	pointer to private state for the decompressor
- *	@ibuf:	pointer to input (compressed) packet data
- *	@isize:	length of input packet
- *	@obuf:	pointer to space for output (decompressed) packet
- *	@osize:	amount of space available at @obuf
- *
- * Because of patent problems, we return DECOMP_ERROR for errors
- * found by inspecting the input data and for system problems, but
- * DECOMP_FATALERROR for any errors which could possibly be said to
- * be being detected "after" decompression.  For DECOMP_ERROR,
- * we can issue a CCP reset-request; for DECOMP_FATALERROR, we may be
- * infringing a patent of Motorola's if we do, so we take CCP down
- * instead.
- *
- * Given that the frame has the correct sequence number and a good FCS,
- * errors such as invalid codes in the input most likely indicate a
- * bug, so we return DECOMP_FATALERROR for them in order to turn off
- * compression, even though they are detected by inspecting the input.
- */
-static int z_decompress(void *arg, unsigned char *ibuf, int isize,
-		 unsigned char *obuf, int osize)
-{
-	struct ppp_deflate_state *state = (struct ppp_deflate_state *) arg;
-	int olen, seq, r;
-	int decode_proto, overflow;
-	unsigned char overflow_buf[1];
-
-	if (isize <= PPP_HDRLEN + DEFLATE_OVHD) {
-		if (state->debug)
-			printk(KERN_DEBUG "z_decompress%d: short pkt (%d)\n",
-			       state->unit, isize);
-		return DECOMP_ERROR;
-	}
-
-	/* Check the sequence number. */
-	seq = get_unaligned_be16(ibuf + PPP_HDRLEN);
-	if (seq != (state->seqno & 0xffff)) {
-		if (state->debug)
-			printk(KERN_DEBUG "z_decompress%d: bad seq # %d, expected %d\n",
-			       state->unit, seq, state->seqno & 0xffff);
-		return DECOMP_ERROR;
-	}
-	++state->seqno;
-
-	/*
-	 * Fill in the first part of the PPP header.  The protocol field
-	 * comes from the decompressed data.
-	 */
-	obuf[0] = PPP_ADDRESS(ibuf);
-	obuf[1] = PPP_CONTROL(ibuf);
-	obuf[2] = 0;
-
-	/*
-	 * Set up to call inflate.  We set avail_out to 1 initially so we can
-	 * look at the first byte of the output and decide whether we have
-	 * a 1-byte or 2-byte protocol field.
-	 */
-	state->strm.next_in = ibuf + PPP_HDRLEN + DEFLATE_OVHD;
-	state->strm.avail_in = isize - (PPP_HDRLEN + DEFLATE_OVHD);
-	state->strm.next_out = obuf + 3;
-	state->strm.avail_out = 1;
-	decode_proto = 1;
-	overflow = 0;
-
-	/*
-	 * Call inflate, supplying more input or output as needed.
-	 */
-	for (;;) {
-		r = zlib_inflate(&state->strm, Z_PACKET_FLUSH);
-		if (r != Z_OK) {
-			if (state->debug)
-				printk(KERN_DEBUG "z_decompress%d: inflate returned %d (%s)\n",
-				       state->unit, r, (state->strm.msg? state->strm.msg: ""));
-			return DECOMP_FATALERROR;
-		}
-		if (state->strm.avail_out != 0)
-			break;		/* all done */
-		if (decode_proto) {
-			state->strm.avail_out = osize - PPP_HDRLEN;
-			if ((obuf[3] & 1) == 0) {
-				/* 2-byte protocol field */
-				obuf[2] = obuf[3];
-				--state->strm.next_out;
-				++state->strm.avail_out;
-			}
-			decode_proto = 0;
-		} else if (!overflow) {
-			/*
-			 * We've filled up the output buffer; the only way to
-			 * find out whether inflate has any more characters
-			 * left is to give it another byte of output space.
-			 */
-			state->strm.next_out = overflow_buf;
-			state->strm.avail_out = 1;
-			overflow = 1;
-		} else {
-			if (state->debug)
-				printk(KERN_DEBUG "z_decompress%d: ran out of mru\n",
-				       state->unit);
-			return DECOMP_FATALERROR;
-		}
-	}
-
-	if (decode_proto) {
-		if (state->debug)
-			printk(KERN_DEBUG "z_decompress%d: didn't get proto\n",
-			       state->unit);
-		return DECOMP_ERROR;
-	}
-
-	olen = osize + overflow - state->strm.avail_out;
-	state->stats.unc_bytes += olen;
-	state->stats.unc_packets++;
-	state->stats.comp_bytes += isize;
-	state->stats.comp_packets++;
-
-	return olen;
-}
-
-/**
- *	z_incomp - add incompressible input data to the history.
- *	@arg:	pointer to private state for the decompressor
- *	@ibuf:	pointer to input packet data
- *	@icnt:	length of input data.
- */
-static void z_incomp(void *arg, unsigned char *ibuf, int icnt)
-{
-	struct ppp_deflate_state *state = (struct ppp_deflate_state *) arg;
-	int proto, r;
-
-	/*
-	 * Check that the protocol is one we handle.
-	 */
-	proto = PPP_PROTOCOL(ibuf);
-	if (proto > 0x3fff || proto == 0xfd || proto == 0xfb)
-		return;
-
-	++state->seqno;
-
-	/*
-	 * We start at the either the 1st or 2nd byte of the protocol field,
-	 * depending on whether the protocol value is compressible.
-	 */
-	state->strm.next_in = ibuf + 3;
-	state->strm.avail_in = icnt - 3;
-	if (proto > 0xff) {
-		--state->strm.next_in;
-		++state->strm.avail_in;
-	}
-
-	r = zlib_inflateIncomp(&state->strm);
-	if (r != Z_OK) {
-		/* gak! */
-		if (state->debug) {
-			printk(KERN_DEBUG "z_incomp%d: inflateIncomp returned %d (%s)\n",
-			       state->unit, r, (state->strm.msg? state->strm.msg: ""));
-		}
-		return;
-	}
-
-	/*
-	 * Update stats.
-	 */
-	state->stats.inc_bytes += icnt;
-	state->stats.inc_packets++;
-	state->stats.unc_bytes += icnt;
-	state->stats.unc_packets++;
-}
-
-/*************************************************************
- * Module interface table
- *************************************************************/
-
-/* These are in ppp_generic.c */
-extern int  ppp_register_compressor   (struct compressor *cp);
-extern void ppp_unregister_compressor (struct compressor *cp);
-
-/*
- * Procedures exported to if_ppp.c.
- */
-static struct compressor ppp_deflate = {
-	.compress_proto =	CI_DEFLATE,
-	.comp_alloc =		z_comp_alloc,
-	.comp_free =		z_comp_free,
-	.comp_init =		z_comp_init,
-	.comp_reset =		z_comp_reset,
-	.compress =		z_compress,
-	.comp_stat =		z_comp_stats,
-	.decomp_alloc =		z_decomp_alloc,
-	.decomp_free =		z_decomp_free,
-	.decomp_init =		z_decomp_init,
-	.decomp_reset =		z_decomp_reset,
-	.decompress =		z_decompress,
-	.incomp =		z_incomp,
-	.decomp_stat =		z_comp_stats,
-	.owner =		THIS_MODULE
-};
-
-static struct compressor ppp_deflate_draft = {
-	.compress_proto =	CI_DEFLATE_DRAFT,
-	.comp_alloc =		z_comp_alloc,
-	.comp_free =		z_comp_free,
-	.comp_init =		z_comp_init,
-	.comp_reset =		z_comp_reset,
-	.compress =		z_compress,
-	.comp_stat =		z_comp_stats,
-	.decomp_alloc =		z_decomp_alloc,
-	.decomp_free =		z_decomp_free,
-	.decomp_init =		z_decomp_init,
-	.decomp_reset =		z_decomp_reset,
-	.decompress =		z_decompress,
-	.incomp =		z_incomp,
-	.decomp_stat =		z_comp_stats,
-	.owner =		THIS_MODULE
-};
-
-static int __init deflate_init(void)
-{
-        int answer = ppp_register_compressor(&ppp_deflate);
-        if (answer == 0)
-                printk(KERN_INFO
-		       "PPP Deflate Compression module registered\n");
-	ppp_register_compressor(&ppp_deflate_draft);
-        return answer;
-}
-
-static void __exit deflate_cleanup(void)
-{
-	ppp_unregister_compressor(&ppp_deflate);
-	ppp_unregister_compressor(&ppp_deflate_draft);
-}
-
-module_init(deflate_init);
-module_exit(deflate_cleanup);
-MODULE_LICENSE("Dual BSD/GPL");
-MODULE_ALIAS("ppp-compress-" __stringify(CI_DEFLATE));
-MODULE_ALIAS("ppp-compress-" __stringify(CI_DEFLATE_DRAFT));