lwip_ppp_ethernet - LwIP with PPP & Ethernet integration

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LwIP with PPP & Ethernet integration

This is the mbed port of the LwIP stack: http://savannah.nongnu.org/projects/lwip/

It includes contributed content from NXP's port for LPCxxxx devices: http://www.lpcware.com/content/project/lightweight-ip-lwip-networking-stack

Licence

LwIP is licenced under the BSD licence:

Copyright (c) 2001-2004 Swedish Institute of Computer Science. 
All rights reserved. 
Redistribution and use in source and binary forms, with or without modification, 
are permitted provided that the following conditions are met: 
1. Redistributions of source code must retain the above copyright notice, 
this list of conditions and the following disclaimer. 
2. Redistributions in binary form must reproduce the above copyright notice, 
this list of conditions and the following disclaimer in the documentation 
and/or other materials provided with the distribution. 
3. The name of the author may not be used to endorse or promote products 
derived from this software without specific prior written permission. 
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
OF SUCH DAMAGE.

src/netif/ppp/ppp.c@0:8e01dca41002, 2012-05-24 (annotated)

Committer:: donatien
Date:: Thu May 24 15:53:48 2012 +0000
Revision:: 0:8e01dca41002

Merge with Emilio's LwIp

Who changed what in which revision?

User	Revision	Line number	New contents of line
donatien	0:8e01dca41002	1	/*****************************************************************************
donatien	0:8e01dca41002	2	* ppp.c - Network Point to Point Protocol program file.
donatien	0:8e01dca41002	3	*
donatien	0:8e01dca41002	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
donatien	0:8e01dca41002	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
donatien	0:8e01dca41002	6	*
donatien	0:8e01dca41002	7	* The authors hereby grant permission to use, copy, modify, distribute,
donatien	0:8e01dca41002	8	* and license this software and its documentation for any purpose, provided
donatien	0:8e01dca41002	9	* that existing copyright notices are retained in all copies and that this
donatien	0:8e01dca41002	10	* notice and the following disclaimer are included verbatim in any
donatien	0:8e01dca41002	11	* distributions. No written agreement, license, or royalty fee is required
donatien	0:8e01dca41002	12	* for any of the authorized uses.
donatien	0:8e01dca41002	13	*
donatien	0:8e01dca41002	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
donatien	0:8e01dca41002	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
donatien	0:8e01dca41002	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
donatien	0:8e01dca41002	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
donatien	0:8e01dca41002	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
donatien	0:8e01dca41002	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
donatien	0:8e01dca41002	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
donatien	0:8e01dca41002	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
donatien	0:8e01dca41002	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
donatien	0:8e01dca41002	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
donatien	0:8e01dca41002	24	*
donatien	0:8e01dca41002	25	******************************************************************************
donatien	0:8e01dca41002	26	* REVISION HISTORY
donatien	0:8e01dca41002	27	*
donatien	0:8e01dca41002	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
donatien	0:8e01dca41002	29	* Ported to lwIP.
donatien	0:8e01dca41002	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
donatien	0:8e01dca41002	31	* Original.
donatien	0:8e01dca41002	32	*****************************************************************************/
donatien	0:8e01dca41002	33
donatien	0:8e01dca41002	34	/*
donatien	0:8e01dca41002	35	* ppp_defs.h - PPP definitions.
donatien	0:8e01dca41002	36	*
donatien	0:8e01dca41002	37	* if_pppvar.h - private structures and declarations for PPP.
donatien	0:8e01dca41002	38	*
donatien	0:8e01dca41002	39	* Copyright (c) 1994 The Australian National University.
donatien	0:8e01dca41002	40	* All rights reserved.
donatien	0:8e01dca41002	41	*
donatien	0:8e01dca41002	42	* Permission to use, copy, modify, and distribute this software and its
donatien	0:8e01dca41002	43	* documentation is hereby granted, provided that the above copyright
donatien	0:8e01dca41002	44	* notice appears in all copies. This software is provided without any
donatien	0:8e01dca41002	45	* warranty, express or implied. The Australian National University
donatien	0:8e01dca41002	46	* makes no representations about the suitability of this software for
donatien	0:8e01dca41002	47	* any purpose.
donatien	0:8e01dca41002	48	*
donatien	0:8e01dca41002	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
donatien	0:8e01dca41002	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
donatien	0:8e01dca41002	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
donatien	0:8e01dca41002	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
donatien	0:8e01dca41002	53	* OF SUCH DAMAGE.
donatien	0:8e01dca41002	54	*
donatien	0:8e01dca41002	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
donatien	0:8e01dca41002	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
donatien	0:8e01dca41002	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
donatien	0:8e01dca41002	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
donatien	0:8e01dca41002	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
donatien	0:8e01dca41002	60	* OR MODIFICATIONS.
donatien	0:8e01dca41002	61	*/
donatien	0:8e01dca41002	62
donatien	0:8e01dca41002	63	/*
donatien	0:8e01dca41002	64	* if_ppp.h - Point-to-Point Protocol definitions.
donatien	0:8e01dca41002	65	*
donatien	0:8e01dca41002	66	* Copyright (c) 1989 Carnegie Mellon University.
donatien	0:8e01dca41002	67	* All rights reserved.
donatien	0:8e01dca41002	68	*
donatien	0:8e01dca41002	69	* Redistribution and use in source and binary forms are permitted
donatien	0:8e01dca41002	70	* provided that the above copyright notice and this paragraph are
donatien	0:8e01dca41002	71	* duplicated in all such forms and that any documentation,
donatien	0:8e01dca41002	72	* advertising materials, and other materials related to such
donatien	0:8e01dca41002	73	* distribution and use acknowledge that the software was developed
donatien	0:8e01dca41002	74	* by Carnegie Mellon University. The name of the
donatien	0:8e01dca41002	75	* University may not be used to endorse or promote products derived
donatien	0:8e01dca41002	76	* from this software without specific prior written permission.
donatien	0:8e01dca41002	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
donatien	0:8e01dca41002	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
donatien	0:8e01dca41002	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
donatien	0:8e01dca41002	80	*/
donatien	0:8e01dca41002	81
donatien	0:8e01dca41002	82	#define __LWIP_ORIG 0
donatien	0:8e01dca41002	83
donatien	0:8e01dca41002	84	#include "lwip/opt.h"
donatien	0:8e01dca41002	85
donatien	0:8e01dca41002	86	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
donatien	0:8e01dca41002	87
donatien	0:8e01dca41002	88	#include "lwip/ip.h" /* for ip_input() */
donatien	0:8e01dca41002	89
donatien	0:8e01dca41002	90	#include "ppp.h"
donatien	0:8e01dca41002	91	#include "pppdebug.h"
donatien	0:8e01dca41002	92
donatien	0:8e01dca41002	93	#include "randm.h"
donatien	0:8e01dca41002	94	#include "fsm.h"
donatien	0:8e01dca41002	95	#if PAP_SUPPORT
donatien	0:8e01dca41002	96	#include "pap.h"
donatien	0:8e01dca41002	97	#endif /* PAP_SUPPORT */
donatien	0:8e01dca41002	98	#if CHAP_SUPPORT
donatien	0:8e01dca41002	99	#include "chap.h"
donatien	0:8e01dca41002	100	#endif /* CHAP_SUPPORT */
donatien	0:8e01dca41002	101	#include "ipcp.h"
donatien	0:8e01dca41002	102	#include "lcp.h"
donatien	0:8e01dca41002	103	#include "magic.h"
donatien	0:8e01dca41002	104	#include "auth.h"
donatien	0:8e01dca41002	105	#if VJ_SUPPORT
donatien	0:8e01dca41002	106	#include "vj.h"
donatien	0:8e01dca41002	107	#endif /* VJ_SUPPORT */
donatien	0:8e01dca41002	108	#if PPPOE_SUPPORT
donatien	0:8e01dca41002	109	#include "netif/ppp_oe.h"
donatien	0:8e01dca41002	110	#endif /* PPPOE_SUPPORT */
donatien	0:8e01dca41002	111
donatien	0:8e01dca41002	112	#include "lwip/tcpip.h"
donatien	0:8e01dca41002	113	#include "lwip/api.h"
donatien	0:8e01dca41002	114	#include "lwip/snmp.h"
donatien	0:8e01dca41002	115
donatien	0:8e01dca41002	116	#include <string.h>
donatien	0:8e01dca41002	117
donatien	0:8e01dca41002	118	/*************************/
donatien	0:8e01dca41002	119	/* LOCAL DEFINITIONS */
donatien	0:8e01dca41002	120	/*************************/
donatien	0:8e01dca41002	121
donatien	0:8e01dca41002	122	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
donatien	0:8e01dca41002	123	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
donatien	0:8e01dca41002	124	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
donatien	0:8e01dca41002	125	*/
donatien	0:8e01dca41002	126	#ifndef PPP_INPROC_MULTITHREADED
donatien	0:8e01dca41002	127	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
donatien	0:8e01dca41002	128	#endif
donatien	0:8e01dca41002	129
donatien	0:8e01dca41002	130	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
donatien	0:8e01dca41002	131	* Default is 0: call pppos_input() for received raw characters, charcater
donatien	0:8e01dca41002	132	* reception is up to the port */
donatien	0:8e01dca41002	133	#ifndef PPP_INPROC_OWNTHREAD
donatien	0:8e01dca41002	134	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
donatien	0:8e01dca41002	135	#endif
donatien	0:8e01dca41002	136
donatien	0:8e01dca41002	137	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
donatien	0:8e01dca41002	138	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
donatien	0:8e01dca41002	139	#endif
donatien	0:8e01dca41002	140
donatien	0:8e01dca41002	141	/*
donatien	0:8e01dca41002	142	* The basic PPP frame.
donatien	0:8e01dca41002	143	*/
donatien	0:8e01dca41002	144	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
donatien	0:8e01dca41002	145	#define PPP_CONTROL(p) (((u_char *)(p))[1])
donatien	0:8e01dca41002	146	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
donatien	0:8e01dca41002	147
donatien	0:8e01dca41002	148	/* PPP packet parser states. Current state indicates operation yet to be
donatien	0:8e01dca41002	149	* completed. */
donatien	0:8e01dca41002	150	typedef enum {
donatien	0:8e01dca41002	151	PDIDLE = 0, /* Idle state - waiting. */
donatien	0:8e01dca41002	152	PDSTART, /* Process start flag. */
donatien	0:8e01dca41002	153	PDADDRESS, /* Process address field. */
donatien	0:8e01dca41002	154	PDCONTROL, /* Process control field. */
donatien	0:8e01dca41002	155	PDPROTOCOL1, /* Process protocol field 1. */
donatien	0:8e01dca41002	156	PDPROTOCOL2, /* Process protocol field 2. */
donatien	0:8e01dca41002	157	PDDATA /* Process data byte. */
donatien	0:8e01dca41002	158	} PPPDevStates;
donatien	0:8e01dca41002	159
donatien	0:8e01dca41002	160	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
donatien	0:8e01dca41002	161
donatien	0:8e01dca41002	162	/************************/
donatien	0:8e01dca41002	163	/* LOCAL DATA TYPES */
donatien	0:8e01dca41002	164	/************************/
donatien	0:8e01dca41002	165
donatien	0:8e01dca41002	166	/** RX buffer size: this may be configured smaller! */
donatien	0:8e01dca41002	167	#ifndef PPPOS_RX_BUFSIZE
donatien	0:8e01dca41002	168	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
donatien	0:8e01dca41002	169	#endif
donatien	0:8e01dca41002	170
donatien	0:8e01dca41002	171	typedef struct PPPControlRx_s {
donatien	0:8e01dca41002	172	/** unit number / ppp descriptor */
donatien	0:8e01dca41002	173	int pd;
donatien	0:8e01dca41002	174	/** the rx file descriptor */
donatien	0:8e01dca41002	175	sio_fd_t fd;
donatien	0:8e01dca41002	176	/** receive buffer - encoded data is stored here */
donatien	0:8e01dca41002	177	u_char rxbuf[PPPOS_RX_BUFSIZE];
donatien	0:8e01dca41002	178
donatien	0:8e01dca41002	179	/* The input packet. */
donatien	0:8e01dca41002	180	struct pbuf inHead, inTail;
donatien	0:8e01dca41002	181
donatien	0:8e01dca41002	182	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	183	u16_t inProtocol; /* The input protocol code. */
donatien	0:8e01dca41002	184	u16_t inFCS; /* Input Frame Check Sequence value. */
donatien	0:8e01dca41002	185	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	186	PPPDevStates inState; /* The input process state. */
donatien	0:8e01dca41002	187	char inEscaped; /* Escape next character. */
donatien	0:8e01dca41002	188	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
donatien	0:8e01dca41002	189	} PPPControlRx;
donatien	0:8e01dca41002	190
donatien	0:8e01dca41002	191	/*
donatien	0:8e01dca41002	192	* PPP interface control block.
donatien	0:8e01dca41002	193	*/
donatien	0:8e01dca41002	194	typedef struct PPPControl_s {
donatien	0:8e01dca41002	195	PPPControlRx rx;
donatien	0:8e01dca41002	196	char openFlag; /* True when in use. */
donatien	0:8e01dca41002	197	#if PPPOE_SUPPORT
donatien	0:8e01dca41002	198	struct netif *ethif;
donatien	0:8e01dca41002	199	struct pppoe_softc *pppoe_sc;
donatien	0:8e01dca41002	200	#endif /* PPPOE_SUPPORT */
donatien	0:8e01dca41002	201	int if_up; /* True when the interface is up. */
donatien	0:8e01dca41002	202	int errCode; /* Code indicating why interface is down. */
donatien	0:8e01dca41002	203	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	204	sio_fd_t fd; /* File device ID of port. */
donatien	0:8e01dca41002	205	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	206	u16_t mtu; /* Peer's mru */
donatien	0:8e01dca41002	207	int pcomp; /* Does peer accept protocol compression? */
donatien	0:8e01dca41002	208	int accomp; /* Does peer accept addr/ctl compression? */
donatien	0:8e01dca41002	209	u_long lastXMit; /* Time of last transmission. */
donatien	0:8e01dca41002	210	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
donatien	0:8e01dca41002	211	#if PPPOS_SUPPORT && VJ_SUPPORT
donatien	0:8e01dca41002	212	int vjEnabled; /* Flag indicating VJ compression enabled. */
donatien	0:8e01dca41002	213	struct vjcompress vjComp; /* Van Jacobson compression header. */
donatien	0:8e01dca41002	214	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:8e01dca41002	215
donatien	0:8e01dca41002	216	struct netif netif;
donatien	0:8e01dca41002	217
donatien	0:8e01dca41002	218	struct ppp_addrs addrs;
donatien	0:8e01dca41002	219
donatien	0:8e01dca41002	220	void (linkStatusCB)(void ctx, int errCode, void *arg);
donatien	0:8e01dca41002	221	void *linkStatusCtx;
donatien	0:8e01dca41002	222
donatien	0:8e01dca41002	223	} PPPControl;
donatien	0:8e01dca41002	224
donatien	0:8e01dca41002	225
donatien	0:8e01dca41002	226	/*
donatien	0:8e01dca41002	227	* Ioctl definitions.
donatien	0:8e01dca41002	228	*/
donatien	0:8e01dca41002	229
donatien	0:8e01dca41002	230	struct npioctl {
donatien	0:8e01dca41002	231	int protocol; /* PPP procotol, e.g. PPP_IP */
donatien	0:8e01dca41002	232	enum NPmode mode;
donatien	0:8e01dca41002	233	};
donatien	0:8e01dca41002	234
donatien	0:8e01dca41002	235
donatien	0:8e01dca41002	236
donatien	0:8e01dca41002	237	/***********************************/
donatien	0:8e01dca41002	238	/* LOCAL FUNCTION DECLARATIONS */
donatien	0:8e01dca41002	239	/***********************************/
donatien	0:8e01dca41002	240	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	241	#if PPP_INPROC_OWNTHREAD
donatien	0:8e01dca41002	242	static void pppInputThread(void *arg);
donatien	0:8e01dca41002	243	#endif /* PPP_INPROC_OWNTHREAD */
donatien	0:8e01dca41002	244	static void pppDrop(PPPControlRx *pcrx);
donatien	0:8e01dca41002	245	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
donatien	0:8e01dca41002	246	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	247
donatien	0:8e01dca41002	248
donatien	0:8e01dca41002	249	/******************************/
donatien	0:8e01dca41002	250	/* PUBLIC DATA STRUCTURES */
donatien	0:8e01dca41002	251	/******************************/
donatien	0:8e01dca41002	252	u_long subnetMask;
donatien	0:8e01dca41002	253
donatien	0:8e01dca41002	254	static PPPControl pppControl[NUM_PPP] __attribute((section("AHBSRAM1"))); //Add DG; /* The PPP interface control blocks. */
donatien	0:8e01dca41002	255
donatien	0:8e01dca41002	256	#if !__LWIP_ORIG
donatien	0:8e01dca41002	257	sys_mbox_t pppMbox; //Used to signal PPP thread that a PPP session begins
donatien	0:8e01dca41002	258	#endif
donatien	0:8e01dca41002	259
donatien	0:8e01dca41002	260	/*
donatien	0:8e01dca41002	261	* PPP Data Link Layer "protocol" table.
donatien	0:8e01dca41002	262	* One entry per supported protocol.
donatien	0:8e01dca41002	263	* The last entry must be NULL.
donatien	0:8e01dca41002	264	*/
donatien	0:8e01dca41002	265	struct protent *ppp_protocols[] = {
donatien	0:8e01dca41002	266	&lcp_protent,
donatien	0:8e01dca41002	267	#if PAP_SUPPORT
donatien	0:8e01dca41002	268	&pap_protent,
donatien	0:8e01dca41002	269	#endif /* PAP_SUPPORT */
donatien	0:8e01dca41002	270	#if CHAP_SUPPORT
donatien	0:8e01dca41002	271	&chap_protent,
donatien	0:8e01dca41002	272	#endif /* CHAP_SUPPORT */
donatien	0:8e01dca41002	273	#if CBCP_SUPPORT
donatien	0:8e01dca41002	274	&cbcp_protent,
donatien	0:8e01dca41002	275	#endif /* CBCP_SUPPORT */
donatien	0:8e01dca41002	276	&ipcp_protent,
donatien	0:8e01dca41002	277	#if CCP_SUPPORT
donatien	0:8e01dca41002	278	&ccp_protent,
donatien	0:8e01dca41002	279	#endif /* CCP_SUPPORT */
donatien	0:8e01dca41002	280	NULL
donatien	0:8e01dca41002	281	};
donatien	0:8e01dca41002	282
donatien	0:8e01dca41002	283
donatien	0:8e01dca41002	284	/*
donatien	0:8e01dca41002	285	* Buffers for outgoing packets. This must be accessed only from the appropriate
donatien	0:8e01dca41002	286	* PPP task so that it doesn't need to be protected to avoid collisions.
donatien	0:8e01dca41002	287	*/
donatien	0:8e01dca41002	288	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] __attribute((section("AHBSRAM1")));
donatien	0:8e01dca41002	289
donatien	0:8e01dca41002	290
donatien	0:8e01dca41002	291	/*****************************/
donatien	0:8e01dca41002	292	/* LOCAL DATA STRUCTURES */
donatien	0:8e01dca41002	293	/*****************************/
donatien	0:8e01dca41002	294
donatien	0:8e01dca41002	295	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	296	/*
donatien	0:8e01dca41002	297	* FCS lookup table as calculated by genfcstab.
donatien	0:8e01dca41002	298	* @todo: smaller, slower implementation for lower memory footprint?
donatien	0:8e01dca41002	299	*/
donatien	0:8e01dca41002	300	static const u_short fcstab[256] = {
donatien	0:8e01dca41002	301	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
donatien	0:8e01dca41002	302	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
donatien	0:8e01dca41002	303	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
donatien	0:8e01dca41002	304	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
donatien	0:8e01dca41002	305	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
donatien	0:8e01dca41002	306	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
donatien	0:8e01dca41002	307	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
donatien	0:8e01dca41002	308	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
donatien	0:8e01dca41002	309	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
donatien	0:8e01dca41002	310	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
donatien	0:8e01dca41002	311	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
donatien	0:8e01dca41002	312	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
donatien	0:8e01dca41002	313	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
donatien	0:8e01dca41002	314	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
donatien	0:8e01dca41002	315	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
donatien	0:8e01dca41002	316	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
donatien	0:8e01dca41002	317	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
donatien	0:8e01dca41002	318	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
donatien	0:8e01dca41002	319	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
donatien	0:8e01dca41002	320	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
donatien	0:8e01dca41002	321	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
donatien	0:8e01dca41002	322	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
donatien	0:8e01dca41002	323	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
donatien	0:8e01dca41002	324	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
donatien	0:8e01dca41002	325	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
donatien	0:8e01dca41002	326	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
donatien	0:8e01dca41002	327	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
donatien	0:8e01dca41002	328	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
donatien	0:8e01dca41002	329	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
donatien	0:8e01dca41002	330	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
donatien	0:8e01dca41002	331	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
donatien	0:8e01dca41002	332	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
donatien	0:8e01dca41002	333	};
donatien	0:8e01dca41002	334
donatien	0:8e01dca41002	335	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
donatien	0:8e01dca41002	336	* to select the specific bit for a character. */
donatien	0:8e01dca41002	337	static u_char pppACCMMask[] = {
donatien	0:8e01dca41002	338	0x01,
donatien	0:8e01dca41002	339	0x02,
donatien	0:8e01dca41002	340	0x04,
donatien	0:8e01dca41002	341	0x08,
donatien	0:8e01dca41002	342	0x10,
donatien	0:8e01dca41002	343	0x20,
donatien	0:8e01dca41002	344	0x40,
donatien	0:8e01dca41002	345	0x80
donatien	0:8e01dca41002	346	};
donatien	0:8e01dca41002	347
donatien	0:8e01dca41002	348	/** Wake up the task blocked in reading from serial line (if any) */
donatien	0:8e01dca41002	349	static void
donatien	0:8e01dca41002	350	pppRecvWakeup(int pd)
donatien	0:8e01dca41002	351	{
donatien	0:8e01dca41002	352	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
donatien	0:8e01dca41002	353	if (pppControl[pd].openFlag != 0) {
donatien	0:8e01dca41002	354	sio_read_abort(pppControl[pd].fd);
donatien	0:8e01dca41002	355	}
donatien	0:8e01dca41002	356	}
donatien	0:8e01dca41002	357	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	358
donatien	0:8e01dca41002	359	void
donatien	0:8e01dca41002	360	pppLinkTerminated(int pd)
donatien	0:8e01dca41002	361	{
donatien	0:8e01dca41002	362	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
donatien	0:8e01dca41002	363
donatien	0:8e01dca41002	364	#if PPPOE_SUPPORT
donatien	0:8e01dca41002	365	if (pppControl[pd].ethif) {
donatien	0:8e01dca41002	366	pppoe_disconnect(pppControl[pd].pppoe_sc);
donatien	0:8e01dca41002	367	} else
donatien	0:8e01dca41002	368	#endif /* PPPOE_SUPPORT */
donatien	0:8e01dca41002	369	{
donatien	0:8e01dca41002	370	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	371	PPPControl* pc;
donatien	0:8e01dca41002	372	pppRecvWakeup(pd);
donatien	0:8e01dca41002	373	pc = &pppControl[pd];
donatien	0:8e01dca41002	374
donatien	0:8e01dca41002	375	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
donatien	0:8e01dca41002	376	if (pc->linkStatusCB) {
donatien	0:8e01dca41002	377	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
donatien	0:8e01dca41002	378	}
donatien	0:8e01dca41002	379
donatien	0:8e01dca41002	380	pc->openFlag = 0;/**/
donatien	0:8e01dca41002	381	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	382	}
donatien	0:8e01dca41002	383	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
donatien	0:8e01dca41002	384	}
donatien	0:8e01dca41002	385
donatien	0:8e01dca41002	386	void
donatien	0:8e01dca41002	387	pppLinkDown(int pd)
donatien	0:8e01dca41002	388	{
donatien	0:8e01dca41002	389	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
donatien	0:8e01dca41002	390
donatien	0:8e01dca41002	391	#if PPPOE_SUPPORT
donatien	0:8e01dca41002	392	if (pppControl[pd].ethif) {
donatien	0:8e01dca41002	393	pppoe_disconnect(pppControl[pd].pppoe_sc);
donatien	0:8e01dca41002	394	} else
donatien	0:8e01dca41002	395	#endif /* PPPOE_SUPPORT */
donatien	0:8e01dca41002	396	{
donatien	0:8e01dca41002	397	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	398	pppRecvWakeup(pd);
donatien	0:8e01dca41002	399	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	400	}
donatien	0:8e01dca41002	401	}
donatien	0:8e01dca41002	402
donatien	0:8e01dca41002	403	/** Initiate LCP open request */
donatien	0:8e01dca41002	404	static void
donatien	0:8e01dca41002	405	pppStart(int pd)
donatien	0:8e01dca41002	406	{
donatien	0:8e01dca41002	407	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
donatien	0:8e01dca41002	408	lcp_lowerup(pd);
donatien	0:8e01dca41002	409	lcp_open(pd); /* Start protocol */
donatien	0:8e01dca41002	410	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
donatien	0:8e01dca41002	411	}
donatien	0:8e01dca41002	412
donatien	0:8e01dca41002	413	/** LCP close request */
donatien	0:8e01dca41002	414	static void
donatien	0:8e01dca41002	415	pppStop(int pd)
donatien	0:8e01dca41002	416	{
donatien	0:8e01dca41002	417	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
donatien	0:8e01dca41002	418	lcp_close(pd, "User request");
donatien	0:8e01dca41002	419	}
donatien	0:8e01dca41002	420
donatien	0:8e01dca41002	421	/** Called when carrier/link is lost */
donatien	0:8e01dca41002	422	static void
donatien	0:8e01dca41002	423	pppHup(int pd)
donatien	0:8e01dca41002	424	{
donatien	0:8e01dca41002	425	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
donatien	0:8e01dca41002	426	lcp_lowerdown(pd);
donatien	0:8e01dca41002	427	link_terminated(pd);
donatien	0:8e01dca41002	428	}
donatien	0:8e01dca41002	429
donatien	0:8e01dca41002	430	/***********************************/
donatien	0:8e01dca41002	431	/* PUBLIC FUNCTION DEFINITIONS */
donatien	0:8e01dca41002	432	/***********************************/
donatien	0:8e01dca41002	433	/* Initialize the PPP subsystem. */
donatien	0:8e01dca41002	434
donatien	0:8e01dca41002	435	struct ppp_settings ppp_settings;
donatien	0:8e01dca41002	436
donatien	0:8e01dca41002	437	void
donatien	0:8e01dca41002	438	pppInit(void)
donatien	0:8e01dca41002	439	{
donatien	0:8e01dca41002	440	struct protent *protp;
donatien	0:8e01dca41002	441	int i, j;
donatien	0:8e01dca41002	442
donatien	0:8e01dca41002	443	memset(&ppp_settings, 0, sizeof(ppp_settings));
donatien	0:8e01dca41002	444	ppp_settings.usepeerdns = 1;
donatien	0:8e01dca41002	445	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
donatien	0:8e01dca41002	446
donatien	0:8e01dca41002	447	magicInit();
donatien	0:8e01dca41002	448
donatien	0:8e01dca41002	449	subnetMask = PP_HTONL(0xffffff00UL);
donatien	0:8e01dca41002	450
donatien	0:8e01dca41002	451	for (i = 0; i < NUM_PPP; i++) {
donatien	0:8e01dca41002	452	/* Initialize each protocol to the standard option set. */
donatien	0:8e01dca41002	453	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
donatien	0:8e01dca41002	454	(*protp->init)(i);
donatien	0:8e01dca41002	455	}
donatien	0:8e01dca41002	456	}
donatien	0:8e01dca41002	457
donatien	0:8e01dca41002	458	#if !__LWIP_ORIG
donatien	0:8e01dca41002	459	sys_mbox_new(&pppMbox, 1);
donatien	0:8e01dca41002	460	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)NULL, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO); //Create PPP thread here
donatien	0:8e01dca41002	461	#endif
donatien	0:8e01dca41002	462	}
donatien	0:8e01dca41002	463
donatien	0:8e01dca41002	464	void
donatien	0:8e01dca41002	465	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
donatien	0:8e01dca41002	466	{
donatien	0:8e01dca41002	467	switch(authType) {
donatien	0:8e01dca41002	468	case PPPAUTHTYPE_NONE:
donatien	0:8e01dca41002	469	default:
donatien	0:8e01dca41002	470	#ifdef LWIP_PPP_STRICT_PAP_REJECT
donatien	0:8e01dca41002	471	ppp_settings.refuse_pap = 1;
donatien	0:8e01dca41002	472	#else /* LWIP_PPP_STRICT_PAP_REJECT */
donatien	0:8e01dca41002	473	/* some providers request pap and accept an empty login/pw */
donatien	0:8e01dca41002	474	ppp_settings.refuse_pap = 0;
donatien	0:8e01dca41002	475	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
donatien	0:8e01dca41002	476	ppp_settings.refuse_chap = 1;
donatien	0:8e01dca41002	477	break;
donatien	0:8e01dca41002	478
donatien	0:8e01dca41002	479	case PPPAUTHTYPE_ANY:
donatien	0:8e01dca41002	480	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
donatien	0:8e01dca41002	481	* RFC 1994 says:
donatien	0:8e01dca41002	482	*
donatien	0:8e01dca41002	483	* In practice, within or associated with each PPP server, there is a
donatien	0:8e01dca41002	484	* database which associates "user" names with authentication
donatien	0:8e01dca41002	485	* information ("secrets"). It is not anticipated that a particular
donatien	0:8e01dca41002	486	* named user would be authenticated by multiple methods. This would
donatien	0:8e01dca41002	487	* make the user vulnerable to attacks which negotiate the least secure
donatien	0:8e01dca41002	488	* method from among a set (such as PAP rather than CHAP). If the same
donatien	0:8e01dca41002	489	* secret was used, PAP would reveal the secret to be used later with
donatien	0:8e01dca41002	490	* CHAP.
donatien	0:8e01dca41002	491	*
donatien	0:8e01dca41002	492	* Instead, for each user name there should be an indication of exactly
donatien	0:8e01dca41002	493	* one method used to authenticate that user name. If a user needs to
donatien	0:8e01dca41002	494	* make use of different authentication methods under different
donatien	0:8e01dca41002	495	* circumstances, then distinct user names SHOULD be employed, each of
donatien	0:8e01dca41002	496	* which identifies exactly one authentication method.
donatien	0:8e01dca41002	497	*
donatien	0:8e01dca41002	498	*/
donatien	0:8e01dca41002	499	ppp_settings.refuse_pap = 0;
donatien	0:8e01dca41002	500	ppp_settings.refuse_chap = 0;
donatien	0:8e01dca41002	501	break;
donatien	0:8e01dca41002	502
donatien	0:8e01dca41002	503	case PPPAUTHTYPE_PAP:
donatien	0:8e01dca41002	504	ppp_settings.refuse_pap = 0;
donatien	0:8e01dca41002	505	ppp_settings.refuse_chap = 1;
donatien	0:8e01dca41002	506	break;
donatien	0:8e01dca41002	507
donatien	0:8e01dca41002	508	case PPPAUTHTYPE_CHAP:
donatien	0:8e01dca41002	509	ppp_settings.refuse_pap = 1;
donatien	0:8e01dca41002	510	ppp_settings.refuse_chap = 0;
donatien	0:8e01dca41002	511	break;
donatien	0:8e01dca41002	512	}
donatien	0:8e01dca41002	513
donatien	0:8e01dca41002	514	if(user) {
donatien	0:8e01dca41002	515	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
donatien	0:8e01dca41002	516	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
donatien	0:8e01dca41002	517	} else {
donatien	0:8e01dca41002	518	ppp_settings.user[0] = '\0';
donatien	0:8e01dca41002	519	}
donatien	0:8e01dca41002	520
donatien	0:8e01dca41002	521	if(passwd) {
donatien	0:8e01dca41002	522	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
donatien	0:8e01dca41002	523	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
donatien	0:8e01dca41002	524	} else {
donatien	0:8e01dca41002	525	ppp_settings.passwd[0] = '\0';
donatien	0:8e01dca41002	526	}
donatien	0:8e01dca41002	527	}
donatien	0:8e01dca41002	528
donatien	0:8e01dca41002	529	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	530	/** Open a new PPP connection using the given I/O device.
donatien	0:8e01dca41002	531	* This initializes the PPP control block but does not
donatien	0:8e01dca41002	532	* attempt to negotiate the LCP session. If this port
donatien	0:8e01dca41002	533	* connects to a modem, the modem connection must be
donatien	0:8e01dca41002	534	* established before calling this.
donatien	0:8e01dca41002	535	* Return a new PPP connection descriptor on success or
donatien	0:8e01dca41002	536	* an error code (negative) on failure.
donatien	0:8e01dca41002	537	*
donatien	0:8e01dca41002	538	* pppOpen() is directly defined to this function.
donatien	0:8e01dca41002	539	*/
donatien	0:8e01dca41002	540	int
donatien	0:8e01dca41002	541	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
donatien	0:8e01dca41002	542	{
donatien	0:8e01dca41002	543	PPPControl *pc;
donatien	0:8e01dca41002	544	int pd;
donatien	0:8e01dca41002	545
donatien	0:8e01dca41002	546	if (linkStatusCB == NULL) {
donatien	0:8e01dca41002	547	/* PPP is single-threaded: without a callback,
donatien	0:8e01dca41002	548	* there is no way to know when the link is up. */
donatien	0:8e01dca41002	549	return PPPERR_PARAM;
donatien	0:8e01dca41002	550	}
donatien	0:8e01dca41002	551
donatien	0:8e01dca41002	552	/* Find a free PPP session descriptor. */
donatien	0:8e01dca41002	553	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
donatien	0:8e01dca41002	554
donatien	0:8e01dca41002	555	if (pd >= NUM_PPP) {
donatien	0:8e01dca41002	556	pd = PPPERR_OPEN;
donatien	0:8e01dca41002	557	} else {
donatien	0:8e01dca41002	558	pc = &pppControl[pd];
donatien	0:8e01dca41002	559	/* @todo: is this correct or do I overwrite something? */
donatien	0:8e01dca41002	560	memset(pc, 0, sizeof(PPPControl));
donatien	0:8e01dca41002	561	pc->rx.pd = pd;
donatien	0:8e01dca41002	562	pc->rx.fd = fd;
donatien	0:8e01dca41002	563
donatien	0:8e01dca41002	564	pc->openFlag = 1;
donatien	0:8e01dca41002	565	pc->fd = fd;
donatien	0:8e01dca41002	566
donatien	0:8e01dca41002	567	#if VJ_SUPPORT
donatien	0:8e01dca41002	568	vj_compress_init(&pc->vjComp);
donatien	0:8e01dca41002	569	#endif /* VJ_SUPPORT */
donatien	0:8e01dca41002	570
donatien	0:8e01dca41002	571	/*
donatien	0:8e01dca41002	572	* Default the in and out accm so that escape and flag characters
donatien	0:8e01dca41002	573	* are always escaped.
donatien	0:8e01dca41002	574	*/
donatien	0:8e01dca41002	575	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
donatien	0:8e01dca41002	576	pc->outACCM[15] = 0x60;
donatien	0:8e01dca41002	577
donatien	0:8e01dca41002	578	pc->linkStatusCB = linkStatusCB;
donatien	0:8e01dca41002	579	pc->linkStatusCtx = linkStatusCtx;
donatien	0:8e01dca41002	580
donatien	0:8e01dca41002	581	/*
donatien	0:8e01dca41002	582	* Start the connection and handle incoming events (packet or timeout).
donatien	0:8e01dca41002	583	*/
donatien	0:8e01dca41002	584	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
donatien	0:8e01dca41002	585	pppStart(pd);
donatien	0:8e01dca41002	586	#if PPP_INPROC_OWNTHREAD
donatien	0:8e01dca41002	587	#if __LWIP_ORIG
donatien	0:8e01dca41002	588	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
donatien	0:8e01dca41002	589	#else
donatien	0:8e01dca41002	590	sys_mbox_post(&pppMbox, (void*)&pc->rx);
donatien	0:8e01dca41002	591	#endif
donatien	0:8e01dca41002	592	#endif
donatien	0:8e01dca41002	593	}
donatien	0:8e01dca41002	594
donatien	0:8e01dca41002	595	return pd;
donatien	0:8e01dca41002	596	}
donatien	0:8e01dca41002	597	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	598
donatien	0:8e01dca41002	599	#if PPPOE_SUPPORT
donatien	0:8e01dca41002	600	static void pppOverEthernetLinkStatusCB(int pd, int up);
donatien	0:8e01dca41002	601
donatien	0:8e01dca41002	602	void
donatien	0:8e01dca41002	603	pppOverEthernetClose(int pd)
donatien	0:8e01dca41002	604	{
donatien	0:8e01dca41002	605	PPPControl* pc = &pppControl[pd];
donatien	0:8e01dca41002	606
donatien	0:8e01dca41002	607	/* TJL There's no lcp_deinit */
donatien	0:8e01dca41002	608	lcp_close(pd, NULL);
donatien	0:8e01dca41002	609
donatien	0:8e01dca41002	610	pppoe_destroy(&pc->netif);
donatien	0:8e01dca41002	611	}
donatien	0:8e01dca41002	612
donatien	0:8e01dca41002	613	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
donatien	0:8e01dca41002	614	{
donatien	0:8e01dca41002	615	PPPControl *pc;
donatien	0:8e01dca41002	616	int pd;
donatien	0:8e01dca41002	617
donatien	0:8e01dca41002	618	LWIP_UNUSED_ARG(service_name);
donatien	0:8e01dca41002	619	LWIP_UNUSED_ARG(concentrator_name);
donatien	0:8e01dca41002	620
donatien	0:8e01dca41002	621	if (linkStatusCB == NULL) {
donatien	0:8e01dca41002	622	/* PPP is single-threaded: without a callback,
donatien	0:8e01dca41002	623	* there is no way to know when the link is up. */
donatien	0:8e01dca41002	624	return PPPERR_PARAM;
donatien	0:8e01dca41002	625	}
donatien	0:8e01dca41002	626
donatien	0:8e01dca41002	627	/* Find a free PPP session descriptor. Critical region? */
donatien	0:8e01dca41002	628	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
donatien	0:8e01dca41002	629	if (pd >= NUM_PPP) {
donatien	0:8e01dca41002	630	pd = PPPERR_OPEN;
donatien	0:8e01dca41002	631	} else {
donatien	0:8e01dca41002	632	pc = &pppControl[pd];
donatien	0:8e01dca41002	633	memset(pc, 0, sizeof(PPPControl));
donatien	0:8e01dca41002	634	pc->openFlag = 1;
donatien	0:8e01dca41002	635	pc->ethif = ethif;
donatien	0:8e01dca41002	636
donatien	0:8e01dca41002	637	pc->linkStatusCB = linkStatusCB;
donatien	0:8e01dca41002	638	pc->linkStatusCtx = linkStatusCtx;
donatien	0:8e01dca41002	639
donatien	0:8e01dca41002	640	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
donatien	0:8e01dca41002	641	lcp_wantoptions[pd].neg_asyncmap = 0;
donatien	0:8e01dca41002	642	lcp_wantoptions[pd].neg_pcompression = 0;
donatien	0:8e01dca41002	643	lcp_wantoptions[pd].neg_accompression = 0;
donatien	0:8e01dca41002	644
donatien	0:8e01dca41002	645	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
donatien	0:8e01dca41002	646	lcp_allowoptions[pd].neg_asyncmap = 0;
donatien	0:8e01dca41002	647	lcp_allowoptions[pd].neg_pcompression = 0;
donatien	0:8e01dca41002	648	lcp_allowoptions[pd].neg_accompression = 0;
donatien	0:8e01dca41002	649
donatien	0:8e01dca41002	650	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
donatien	0:8e01dca41002	651	pc->openFlag = 0;
donatien	0:8e01dca41002	652	return PPPERR_OPEN;
donatien	0:8e01dca41002	653	}
donatien	0:8e01dca41002	654
donatien	0:8e01dca41002	655	pppoe_connect(pc->pppoe_sc);
donatien	0:8e01dca41002	656	}
donatien	0:8e01dca41002	657
donatien	0:8e01dca41002	658	return pd;
donatien	0:8e01dca41002	659	}
donatien	0:8e01dca41002	660	#endif /* PPPOE_SUPPORT */
donatien	0:8e01dca41002	661
donatien	0:8e01dca41002	662
donatien	0:8e01dca41002	663	/* Close a PPP connection and release the descriptor.
donatien	0:8e01dca41002	664	* Any outstanding packets in the queues are dropped.
donatien	0:8e01dca41002	665	* Return 0 on success, an error code on failure. */
donatien	0:8e01dca41002	666	int
donatien	0:8e01dca41002	667	pppClose(int pd)
donatien	0:8e01dca41002	668	{
donatien	0:8e01dca41002	669	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	670	int st = 0;
donatien	0:8e01dca41002	671
donatien	0:8e01dca41002	672	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
donatien	0:8e01dca41002	673
donatien	0:8e01dca41002	674	/* Disconnect */
donatien	0:8e01dca41002	675	#if PPPOE_SUPPORT
donatien	0:8e01dca41002	676	if(pc->ethif) {
donatien	0:8e01dca41002	677	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
donatien	0:8e01dca41002	678	pc->errCode = PPPERR_USER;
donatien	0:8e01dca41002	679	/* This will leave us at PHASE_DEAD. */
donatien	0:8e01dca41002	680	pppStop(pd);
donatien	0:8e01dca41002	681	} else
donatien	0:8e01dca41002	682	#endif /* PPPOE_SUPPORT */
donatien	0:8e01dca41002	683	{
donatien	0:8e01dca41002	684	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	685	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
donatien	0:8e01dca41002	686	pc->errCode = PPPERR_USER;
donatien	0:8e01dca41002	687	/* This will leave us at PHASE_DEAD. */
donatien	0:8e01dca41002	688	pppStop(pd);
donatien	0:8e01dca41002	689	pppRecvWakeup(pd);
donatien	0:8e01dca41002	690	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	691	}
donatien	0:8e01dca41002	692
donatien	0:8e01dca41002	693	return st;
donatien	0:8e01dca41002	694	}
donatien	0:8e01dca41002	695
donatien	0:8e01dca41002	696	/* This function is called when carrier is lost on the PPP channel. */
donatien	0:8e01dca41002	697	void
donatien	0:8e01dca41002	698	pppSigHUP(int pd)
donatien	0:8e01dca41002	699	{
donatien	0:8e01dca41002	700	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
donatien	0:8e01dca41002	701	pppHup(pd);
donatien	0:8e01dca41002	702	}
donatien	0:8e01dca41002	703
donatien	0:8e01dca41002	704	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	705	static void
donatien	0:8e01dca41002	706	nPut(PPPControl pc, struct pbuf nb)
donatien	0:8e01dca41002	707	{
donatien	0:8e01dca41002	708	struct pbuf *b;
donatien	0:8e01dca41002	709	int c;
donatien	0:8e01dca41002	710
donatien	0:8e01dca41002	711	for(b = nb; b != NULL; b = b->next) {
donatien	0:8e01dca41002	712	if((c = sio_write(pc->fd, b->payload, b->len)) != b->len) {
donatien	0:8e01dca41002	713	PPPDEBUG(LOG_WARNING,
donatien	0:8e01dca41002	714	("PPP nPut: incomplete sio_write(fd:%"SZT_F", len:%d, c: 0x%"X8_F") c = %d\n", (size_t)pc->fd, b->len, c, c));
donatien	0:8e01dca41002	715	LINK_STATS_INC(link.err);
donatien	0:8e01dca41002	716	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
donatien	0:8e01dca41002	717	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:8e01dca41002	718	pbuf_free(nb);
donatien	0:8e01dca41002	719	return;
donatien	0:8e01dca41002	720	}
donatien	0:8e01dca41002	721	}
donatien	0:8e01dca41002	722
donatien	0:8e01dca41002	723	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
donatien	0:8e01dca41002	724	snmp_inc_ifoutucastpkts(&pc->netif);
donatien	0:8e01dca41002	725	pbuf_free(nb);
donatien	0:8e01dca41002	726	LINK_STATS_INC(link.xmit);
donatien	0:8e01dca41002	727	}
donatien	0:8e01dca41002	728
donatien	0:8e01dca41002	729	/*
donatien	0:8e01dca41002	730	* pppAppend - append given character to end of given pbuf. If outACCM
donatien	0:8e01dca41002	731	* is not NULL and the character needs to be escaped, do so.
donatien	0:8e01dca41002	732	* If pbuf is full, append another.
donatien	0:8e01dca41002	733	* Return the current pbuf.
donatien	0:8e01dca41002	734	*/
donatien	0:8e01dca41002	735	static struct pbuf *
donatien	0:8e01dca41002	736	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
donatien	0:8e01dca41002	737	{
donatien	0:8e01dca41002	738	struct pbuf *tb = nb;
donatien	0:8e01dca41002	739
donatien	0:8e01dca41002	740	/* Make sure there is room for the character and an escape code.
donatien	0:8e01dca41002	741	* Sure we don't quite fill the buffer if the character doesn't
donatien	0:8e01dca41002	742	* get escaped but is one character worth complicating this? */
donatien	0:8e01dca41002	743	/* Note: We assume no packet header. */
donatien	0:8e01dca41002	744	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
donatien	0:8e01dca41002	745	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
donatien	0:8e01dca41002	746	if (tb) {
donatien	0:8e01dca41002	747	nb->next = tb;
donatien	0:8e01dca41002	748	} else {
donatien	0:8e01dca41002	749	LINK_STATS_INC(link.memerr);
donatien	0:8e01dca41002	750	}
donatien	0:8e01dca41002	751	nb = tb;
donatien	0:8e01dca41002	752	}
donatien	0:8e01dca41002	753
donatien	0:8e01dca41002	754	if (nb) {
donatien	0:8e01dca41002	755	if (outACCM && ESCAPE_P(*outACCM, c)) {
donatien	0:8e01dca41002	756	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
donatien	0:8e01dca41002	757	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
donatien	0:8e01dca41002	758	} else {
donatien	0:8e01dca41002	759	((u_char)nb->payload + nb->len++) = c;
donatien	0:8e01dca41002	760	}
donatien	0:8e01dca41002	761	}
donatien	0:8e01dca41002	762
donatien	0:8e01dca41002	763	return tb;
donatien	0:8e01dca41002	764	}
donatien	0:8e01dca41002	765	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	766
donatien	0:8e01dca41002	767	#if PPPOE_SUPPORT
donatien	0:8e01dca41002	768	static err_t
donatien	0:8e01dca41002	769	pppifOutputOverEthernet(int pd, struct pbuf *p)
donatien	0:8e01dca41002	770	{
donatien	0:8e01dca41002	771	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	772	struct pbuf *pb;
donatien	0:8e01dca41002	773	u_short protocol = PPP_IP;
donatien	0:8e01dca41002	774	int i=0;
donatien	0:8e01dca41002	775	u16_t tot_len;
donatien	0:8e01dca41002	776
donatien	0:8e01dca41002	777	/* @todo: try to use pbuf_header() here! */
donatien	0:8e01dca41002	778	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
donatien	0:8e01dca41002	779	if(!pb) {
donatien	0:8e01dca41002	780	LINK_STATS_INC(link.memerr);
donatien	0:8e01dca41002	781	LINK_STATS_INC(link.proterr);
donatien	0:8e01dca41002	782	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:8e01dca41002	783	return ERR_MEM;
donatien	0:8e01dca41002	784	}
donatien	0:8e01dca41002	785
donatien	0:8e01dca41002	786	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
donatien	0:8e01dca41002	787
donatien	0:8e01dca41002	788	pc->lastXMit = sys_jiffies();
donatien	0:8e01dca41002	789
donatien	0:8e01dca41002	790	if (!pc->pcomp \|\| protocol > 0xFF) {
donatien	0:8e01dca41002	791	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
donatien	0:8e01dca41002	792	}
donatien	0:8e01dca41002	793	((u_char)pb->payload + i) = protocol & 0xFF;
donatien	0:8e01dca41002	794
donatien	0:8e01dca41002	795	pbuf_chain(pb, p);
donatien	0:8e01dca41002	796	tot_len = pb->tot_len;
donatien	0:8e01dca41002	797
donatien	0:8e01dca41002	798	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
donatien	0:8e01dca41002	799	LINK_STATS_INC(link.err);
donatien	0:8e01dca41002	800	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:8e01dca41002	801	return PPPERR_DEVICE;
donatien	0:8e01dca41002	802	}
donatien	0:8e01dca41002	803
donatien	0:8e01dca41002	804	snmp_add_ifoutoctets(&pc->netif, tot_len);
donatien	0:8e01dca41002	805	snmp_inc_ifoutucastpkts(&pc->netif);
donatien	0:8e01dca41002	806	LINK_STATS_INC(link.xmit);
donatien	0:8e01dca41002	807	return ERR_OK;
donatien	0:8e01dca41002	808	}
donatien	0:8e01dca41002	809	#endif /* PPPOE_SUPPORT */
donatien	0:8e01dca41002	810
donatien	0:8e01dca41002	811	/* Send a packet on the given connection. */
donatien	0:8e01dca41002	812	static err_t
donatien	0:8e01dca41002	813	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
donatien	0:8e01dca41002	814	{
donatien	0:8e01dca41002	815	int pd = (int)(size_t)netif->state;
donatien	0:8e01dca41002	816	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	817	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	818	u_short protocol = PPP_IP;
donatien	0:8e01dca41002	819	u_int fcsOut = PPP_INITFCS;
donatien	0:8e01dca41002	820	struct pbuf headMB = NULL, tailMB = NULL, *p;
donatien	0:8e01dca41002	821	u_char c;
donatien	0:8e01dca41002	822	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	823
donatien	0:8e01dca41002	824	LWIP_UNUSED_ARG(ipaddr);
donatien	0:8e01dca41002	825
donatien	0:8e01dca41002	826	/* Validate parameters. */
donatien	0:8e01dca41002	827	/* We let any protocol value go through - it can't hurt us
donatien	0:8e01dca41002	828	* and the peer will just drop it if it's not accepting it. */
donatien	0:8e01dca41002	829	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
donatien	0:8e01dca41002	830	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
donatien	0:8e01dca41002	831	pd, PPP_IP, pb));
donatien	0:8e01dca41002	832	LINK_STATS_INC(link.opterr);
donatien	0:8e01dca41002	833	LINK_STATS_INC(link.drop);
donatien	0:8e01dca41002	834	snmp_inc_ifoutdiscards(netif);
donatien	0:8e01dca41002	835	return ERR_ARG;
donatien	0:8e01dca41002	836	}
donatien	0:8e01dca41002	837
donatien	0:8e01dca41002	838	/* Check that the link is up. */
donatien	0:8e01dca41002	839	if (lcp_phase[pd] == PHASE_DEAD) {
donatien	0:8e01dca41002	840	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
donatien	0:8e01dca41002	841	LINK_STATS_INC(link.rterr);
donatien	0:8e01dca41002	842	LINK_STATS_INC(link.drop);
donatien	0:8e01dca41002	843	snmp_inc_ifoutdiscards(netif);
donatien	0:8e01dca41002	844	return ERR_RTE;
donatien	0:8e01dca41002	845	}
donatien	0:8e01dca41002	846
donatien	0:8e01dca41002	847	#if PPPOE_SUPPORT
donatien	0:8e01dca41002	848	if(pc->ethif) {
donatien	0:8e01dca41002	849	return pppifOutputOverEthernet(pd, pb);
donatien	0:8e01dca41002	850	}
donatien	0:8e01dca41002	851	#endif /* PPPOE_SUPPORT */
donatien	0:8e01dca41002	852
donatien	0:8e01dca41002	853	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	854	/* Grab an output buffer. */
donatien	0:8e01dca41002	855	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
donatien	0:8e01dca41002	856	if (headMB == NULL) {
donatien	0:8e01dca41002	857	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
donatien	0:8e01dca41002	858	LINK_STATS_INC(link.memerr);
donatien	0:8e01dca41002	859	LINK_STATS_INC(link.drop);
donatien	0:8e01dca41002	860	snmp_inc_ifoutdiscards(netif);
donatien	0:8e01dca41002	861	return ERR_MEM;
donatien	0:8e01dca41002	862	}
donatien	0:8e01dca41002	863
donatien	0:8e01dca41002	864	#if VJ_SUPPORT
donatien	0:8e01dca41002	865	/*
donatien	0:8e01dca41002	866	* Attempt Van Jacobson header compression if VJ is configured and
donatien	0:8e01dca41002	867	* this is an IP packet.
donatien	0:8e01dca41002	868	*/
donatien	0:8e01dca41002	869	if (protocol == PPP_IP && pc->vjEnabled) {
donatien	0:8e01dca41002	870	switch (vj_compress_tcp(&pc->vjComp, pb)) {
donatien	0:8e01dca41002	871	case TYPE_IP:
donatien	0:8e01dca41002	872	/* No change...
donatien	0:8e01dca41002	873	protocol = PPP_IP_PROTOCOL; */
donatien	0:8e01dca41002	874	break;
donatien	0:8e01dca41002	875	case TYPE_COMPRESSED_TCP:
donatien	0:8e01dca41002	876	protocol = PPP_VJC_COMP;
donatien	0:8e01dca41002	877	break;
donatien	0:8e01dca41002	878	case TYPE_UNCOMPRESSED_TCP:
donatien	0:8e01dca41002	879	protocol = PPP_VJC_UNCOMP;
donatien	0:8e01dca41002	880	break;
donatien	0:8e01dca41002	881	default:
donatien	0:8e01dca41002	882	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
donatien	0:8e01dca41002	883	LINK_STATS_INC(link.proterr);
donatien	0:8e01dca41002	884	LINK_STATS_INC(link.drop);
donatien	0:8e01dca41002	885	snmp_inc_ifoutdiscards(netif);
donatien	0:8e01dca41002	886	pbuf_free(headMB);
donatien	0:8e01dca41002	887	return ERR_VAL;
donatien	0:8e01dca41002	888	}
donatien	0:8e01dca41002	889	}
donatien	0:8e01dca41002	890	#endif /* VJ_SUPPORT */
donatien	0:8e01dca41002	891
donatien	0:8e01dca41002	892	tailMB = headMB;
donatien	0:8e01dca41002	893
donatien	0:8e01dca41002	894	/* Build the PPP header. */
donatien	0:8e01dca41002	895	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
donatien	0:8e01dca41002	896	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
donatien	0:8e01dca41002	897	}
donatien	0:8e01dca41002	898
donatien	0:8e01dca41002	899	pc->lastXMit = sys_jiffies();
donatien	0:8e01dca41002	900	if (!pc->accomp) {
donatien	0:8e01dca41002	901	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
donatien	0:8e01dca41002	902	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
donatien	0:8e01dca41002	903	fcsOut = PPP_FCS(fcsOut, PPP_UI);
donatien	0:8e01dca41002	904	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
donatien	0:8e01dca41002	905	}
donatien	0:8e01dca41002	906	if (!pc->pcomp \|\| protocol > 0xFF) {
donatien	0:8e01dca41002	907	c = (protocol >> 8) & 0xFF;
donatien	0:8e01dca41002	908	fcsOut = PPP_FCS(fcsOut, c);
donatien	0:8e01dca41002	909	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:8e01dca41002	910	}
donatien	0:8e01dca41002	911	c = protocol & 0xFF;
donatien	0:8e01dca41002	912	fcsOut = PPP_FCS(fcsOut, c);
donatien	0:8e01dca41002	913	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:8e01dca41002	914
donatien	0:8e01dca41002	915	/* Load packet. */
donatien	0:8e01dca41002	916	for(p = pb; p; p = p->next) {
donatien	0:8e01dca41002	917	int n;
donatien	0:8e01dca41002	918	u_char *sPtr;
donatien	0:8e01dca41002	919
donatien	0:8e01dca41002	920	sPtr = (u_char*)p->payload;
donatien	0:8e01dca41002	921	n = p->len;
donatien	0:8e01dca41002	922	while (n-- > 0) {
donatien	0:8e01dca41002	923	c = *sPtr++;
donatien	0:8e01dca41002	924
donatien	0:8e01dca41002	925	/* Update FCS before checking for special characters. */
donatien	0:8e01dca41002	926	fcsOut = PPP_FCS(fcsOut, c);
donatien	0:8e01dca41002	927
donatien	0:8e01dca41002	928	/* Copy to output buffer escaping special characters. */
donatien	0:8e01dca41002	929	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:8e01dca41002	930	}
donatien	0:8e01dca41002	931	}
donatien	0:8e01dca41002	932
donatien	0:8e01dca41002	933	/* Add FCS and trailing flag. */
donatien	0:8e01dca41002	934	c = ~fcsOut & 0xFF;
donatien	0:8e01dca41002	935	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:8e01dca41002	936	c = (~fcsOut >> 8) & 0xFF;
donatien	0:8e01dca41002	937	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:8e01dca41002	938	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
donatien	0:8e01dca41002	939
donatien	0:8e01dca41002	940	/* If we failed to complete the packet, throw it away. */
donatien	0:8e01dca41002	941	if (!tailMB) {
donatien	0:8e01dca41002	942	PPPDEBUG(LOG_WARNING,
donatien	0:8e01dca41002	943	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
donatien	0:8e01dca41002	944	pd, protocol));
donatien	0:8e01dca41002	945	pbuf_free(headMB);
donatien	0:8e01dca41002	946	LINK_STATS_INC(link.memerr);
donatien	0:8e01dca41002	947	LINK_STATS_INC(link.drop);
donatien	0:8e01dca41002	948	snmp_inc_ifoutdiscards(netif);
donatien	0:8e01dca41002	949	return ERR_MEM;
donatien	0:8e01dca41002	950	}
donatien	0:8e01dca41002	951
donatien	0:8e01dca41002	952	/* Send it. */
donatien	0:8e01dca41002	953	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
donatien	0:8e01dca41002	954
donatien	0:8e01dca41002	955	nPut(pc, headMB);
donatien	0:8e01dca41002	956	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	957
donatien	0:8e01dca41002	958	return ERR_OK;
donatien	0:8e01dca41002	959	}
donatien	0:8e01dca41002	960
donatien	0:8e01dca41002	961	/* Get and set parameters for the given connection.
donatien	0:8e01dca41002	962	* Return 0 on success, an error code on failure. */
donatien	0:8e01dca41002	963	int
donatien	0:8e01dca41002	964	pppIOCtl(int pd, int cmd, void *arg)
donatien	0:8e01dca41002	965	{
donatien	0:8e01dca41002	966	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	967	int st = 0;
donatien	0:8e01dca41002	968
donatien	0:8e01dca41002	969	if (pd < 0 \|\| pd >= NUM_PPP) {
donatien	0:8e01dca41002	970	st = PPPERR_PARAM;
donatien	0:8e01dca41002	971	} else {
donatien	0:8e01dca41002	972	switch(cmd) {
donatien	0:8e01dca41002	973	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
donatien	0:8e01dca41002	974	if (arg) {
donatien	0:8e01dca41002	975	(int )arg = (int)(pc->if_up);
donatien	0:8e01dca41002	976	} else {
donatien	0:8e01dca41002	977	st = PPPERR_PARAM;
donatien	0:8e01dca41002	978	}
donatien	0:8e01dca41002	979	break;
donatien	0:8e01dca41002	980	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
donatien	0:8e01dca41002	981	if (arg) {
donatien	0:8e01dca41002	982	pc->errCode = (int )arg;
donatien	0:8e01dca41002	983	} else {
donatien	0:8e01dca41002	984	st = PPPERR_PARAM;
donatien	0:8e01dca41002	985	}
donatien	0:8e01dca41002	986	break;
donatien	0:8e01dca41002	987	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
donatien	0:8e01dca41002	988	if (arg) {
donatien	0:8e01dca41002	989	(int )arg = (int)(pc->errCode);
donatien	0:8e01dca41002	990	} else {
donatien	0:8e01dca41002	991	st = PPPERR_PARAM;
donatien	0:8e01dca41002	992	}
donatien	0:8e01dca41002	993	break;
donatien	0:8e01dca41002	994	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	995	case PPPCTLG_FD: /* Get the fd associated with the ppp */
donatien	0:8e01dca41002	996	if (arg) {
donatien	0:8e01dca41002	997	(sio_fd_t )arg = pc->fd;
donatien	0:8e01dca41002	998	} else {
donatien	0:8e01dca41002	999	st = PPPERR_PARAM;
donatien	0:8e01dca41002	1000	}
donatien	0:8e01dca41002	1001	break;
donatien	0:8e01dca41002	1002	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	1003	default:
donatien	0:8e01dca41002	1004	st = PPPERR_PARAM;
donatien	0:8e01dca41002	1005	break;
donatien	0:8e01dca41002	1006	}
donatien	0:8e01dca41002	1007	}
donatien	0:8e01dca41002	1008
donatien	0:8e01dca41002	1009	return st;
donatien	0:8e01dca41002	1010	}
donatien	0:8e01dca41002	1011
donatien	0:8e01dca41002	1012	/*
donatien	0:8e01dca41002	1013	* Return the Maximum Transmission Unit for the given PPP connection.
donatien	0:8e01dca41002	1014	*/
donatien	0:8e01dca41002	1015	u_short
donatien	0:8e01dca41002	1016	pppMTU(int pd)
donatien	0:8e01dca41002	1017	{
donatien	0:8e01dca41002	1018	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	1019	u_short st;
donatien	0:8e01dca41002	1020
donatien	0:8e01dca41002	1021	/* Validate parameters. */
donatien	0:8e01dca41002	1022	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:8e01dca41002	1023	st = 0;
donatien	0:8e01dca41002	1024	} else {
donatien	0:8e01dca41002	1025	st = pc->mtu;
donatien	0:8e01dca41002	1026	}
donatien	0:8e01dca41002	1027
donatien	0:8e01dca41002	1028	return st;
donatien	0:8e01dca41002	1029	}
donatien	0:8e01dca41002	1030
donatien	0:8e01dca41002	1031	#if PPPOE_SUPPORT
donatien	0:8e01dca41002	1032	int
donatien	0:8e01dca41002	1033	pppWriteOverEthernet(int pd, const u_char *s, int n)
donatien	0:8e01dca41002	1034	{
donatien	0:8e01dca41002	1035	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	1036	struct pbuf *pb;
donatien	0:8e01dca41002	1037
donatien	0:8e01dca41002	1038	/* skip address & flags */
donatien	0:8e01dca41002	1039	s += 2;
donatien	0:8e01dca41002	1040	n -= 2;
donatien	0:8e01dca41002	1041
donatien	0:8e01dca41002	1042	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
donatien	0:8e01dca41002	1043	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
donatien	0:8e01dca41002	1044	if(!pb) {
donatien	0:8e01dca41002	1045	LINK_STATS_INC(link.memerr);
donatien	0:8e01dca41002	1046	LINK_STATS_INC(link.proterr);
donatien	0:8e01dca41002	1047	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:8e01dca41002	1048	return PPPERR_ALLOC;
donatien	0:8e01dca41002	1049	}
donatien	0:8e01dca41002	1050
donatien	0:8e01dca41002	1051	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
donatien	0:8e01dca41002	1052
donatien	0:8e01dca41002	1053	pc->lastXMit = sys_jiffies();
donatien	0:8e01dca41002	1054
donatien	0:8e01dca41002	1055	MEMCPY(pb->payload, s, n);
donatien	0:8e01dca41002	1056
donatien	0:8e01dca41002	1057	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
donatien	0:8e01dca41002	1058	LINK_STATS_INC(link.err);
donatien	0:8e01dca41002	1059	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:8e01dca41002	1060	return PPPERR_DEVICE;
donatien	0:8e01dca41002	1061	}
donatien	0:8e01dca41002	1062
donatien	0:8e01dca41002	1063	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
donatien	0:8e01dca41002	1064	snmp_inc_ifoutucastpkts(&pc->netif);
donatien	0:8e01dca41002	1065	LINK_STATS_INC(link.xmit);
donatien	0:8e01dca41002	1066	return PPPERR_NONE;
donatien	0:8e01dca41002	1067	}
donatien	0:8e01dca41002	1068	#endif /* PPPOE_SUPPORT */
donatien	0:8e01dca41002	1069
donatien	0:8e01dca41002	1070	/*
donatien	0:8e01dca41002	1071	* Write n characters to a ppp link.
donatien	0:8e01dca41002	1072	* RETURN: >= 0 Number of characters written
donatien	0:8e01dca41002	1073	* -1 Failed to write to device
donatien	0:8e01dca41002	1074	*/
donatien	0:8e01dca41002	1075	int
donatien	0:8e01dca41002	1076	pppWrite(int pd, const u_char *s, int n)
donatien	0:8e01dca41002	1077	{
donatien	0:8e01dca41002	1078	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	1079	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	1080	u_char c;
donatien	0:8e01dca41002	1081	u_int fcsOut;
donatien	0:8e01dca41002	1082	struct pbuf headMB, tailMB;
donatien	0:8e01dca41002	1083	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	1084
donatien	0:8e01dca41002	1085	#if PPPOE_SUPPORT
donatien	0:8e01dca41002	1086	if(pc->ethif) {
donatien	0:8e01dca41002	1087	return pppWriteOverEthernet(pd, s, n);
donatien	0:8e01dca41002	1088	}
donatien	0:8e01dca41002	1089	#endif /* PPPOE_SUPPORT */
donatien	0:8e01dca41002	1090
donatien	0:8e01dca41002	1091	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	1092	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
donatien	0:8e01dca41002	1093	if (headMB == NULL) {
donatien	0:8e01dca41002	1094	LINK_STATS_INC(link.memerr);
donatien	0:8e01dca41002	1095	LINK_STATS_INC(link.proterr);
donatien	0:8e01dca41002	1096	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:8e01dca41002	1097	return PPPERR_ALLOC;
donatien	0:8e01dca41002	1098	}
donatien	0:8e01dca41002	1099
donatien	0:8e01dca41002	1100	tailMB = headMB;
donatien	0:8e01dca41002	1101
donatien	0:8e01dca41002	1102	/* If the link has been idle, we'll send a fresh flag character to
donatien	0:8e01dca41002	1103	* flush any noise. */
donatien	0:8e01dca41002	1104	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
donatien	0:8e01dca41002	1105	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
donatien	0:8e01dca41002	1106	}
donatien	0:8e01dca41002	1107	pc->lastXMit = sys_jiffies();
donatien	0:8e01dca41002	1108
donatien	0:8e01dca41002	1109	fcsOut = PPP_INITFCS;
donatien	0:8e01dca41002	1110	/* Load output buffer. */
donatien	0:8e01dca41002	1111	while (n-- > 0) {
donatien	0:8e01dca41002	1112	c = *s++;
donatien	0:8e01dca41002	1113
donatien	0:8e01dca41002	1114	/* Update FCS before checking for special characters. */
donatien	0:8e01dca41002	1115	fcsOut = PPP_FCS(fcsOut, c);
donatien	0:8e01dca41002	1116
donatien	0:8e01dca41002	1117	/* Copy to output buffer escaping special characters. */
donatien	0:8e01dca41002	1118	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:8e01dca41002	1119	}
donatien	0:8e01dca41002	1120
donatien	0:8e01dca41002	1121	/* Add FCS and trailing flag. */
donatien	0:8e01dca41002	1122	c = ~fcsOut & 0xFF;
donatien	0:8e01dca41002	1123	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:8e01dca41002	1124	c = (~fcsOut >> 8) & 0xFF;
donatien	0:8e01dca41002	1125	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:8e01dca41002	1126	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
donatien	0:8e01dca41002	1127
donatien	0:8e01dca41002	1128	/* If we failed to complete the packet, throw it away.
donatien	0:8e01dca41002	1129	* Otherwise send it. */
donatien	0:8e01dca41002	1130	if (!tailMB) {
donatien	0:8e01dca41002	1131	PPPDEBUG(LOG_WARNING,
donatien	0:8e01dca41002	1132	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
donatien	0:8e01dca41002	1133	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
donatien	0:8e01dca41002	1134	pbuf_free(headMB);
donatien	0:8e01dca41002	1135	LINK_STATS_INC(link.memerr);
donatien	0:8e01dca41002	1136	LINK_STATS_INC(link.proterr);
donatien	0:8e01dca41002	1137	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:8e01dca41002	1138	return PPPERR_ALLOC;
donatien	0:8e01dca41002	1139	}
donatien	0:8e01dca41002	1140
donatien	0:8e01dca41002	1141	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
donatien	0:8e01dca41002	1142	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
donatien	0:8e01dca41002	1143	nPut(pc, headMB);
donatien	0:8e01dca41002	1144	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	1145
donatien	0:8e01dca41002	1146	return PPPERR_NONE;
donatien	0:8e01dca41002	1147	}
donatien	0:8e01dca41002	1148
donatien	0:8e01dca41002	1149	/*
donatien	0:8e01dca41002	1150	* ppp_send_config - configure the transmit characteristics of
donatien	0:8e01dca41002	1151	* the ppp interface.
donatien	0:8e01dca41002	1152	*/
donatien	0:8e01dca41002	1153	void
donatien	0:8e01dca41002	1154	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
donatien	0:8e01dca41002	1155	{
donatien	0:8e01dca41002	1156	PPPControl *pc = &pppControl[unit];
donatien	0:8e01dca41002	1157	int i;
donatien	0:8e01dca41002	1158
donatien	0:8e01dca41002	1159	pc->mtu = mtu;
donatien	0:8e01dca41002	1160	pc->pcomp = pcomp;
donatien	0:8e01dca41002	1161	pc->accomp = accomp;
donatien	0:8e01dca41002	1162
donatien	0:8e01dca41002	1163	/* Load the ACCM bits for the 32 control codes. */
donatien	0:8e01dca41002	1164	for (i = 0; i < 32/8; i++) {
donatien	0:8e01dca41002	1165	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
donatien	0:8e01dca41002	1166	}
donatien	0:8e01dca41002	1167	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
donatien	0:8e01dca41002	1168	unit,
donatien	0:8e01dca41002	1169	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
donatien	0:8e01dca41002	1170	}
donatien	0:8e01dca41002	1171
donatien	0:8e01dca41002	1172
donatien	0:8e01dca41002	1173	/*
donatien	0:8e01dca41002	1174	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
donatien	0:8e01dca41002	1175	*/
donatien	0:8e01dca41002	1176	void
donatien	0:8e01dca41002	1177	ppp_set_xaccm(int unit, ext_accm *accm)
donatien	0:8e01dca41002	1178	{
donatien	0:8e01dca41002	1179	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
donatien	0:8e01dca41002	1180	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
donatien	0:8e01dca41002	1181	unit,
donatien	0:8e01dca41002	1182	pppControl[unit].outACCM[0],
donatien	0:8e01dca41002	1183	pppControl[unit].outACCM[1],
donatien	0:8e01dca41002	1184	pppControl[unit].outACCM[2],
donatien	0:8e01dca41002	1185	pppControl[unit].outACCM[3]));
donatien	0:8e01dca41002	1186	}
donatien	0:8e01dca41002	1187
donatien	0:8e01dca41002	1188
donatien	0:8e01dca41002	1189	/*
donatien	0:8e01dca41002	1190	* ppp_recv_config - configure the receive-side characteristics of
donatien	0:8e01dca41002	1191	* the ppp interface.
donatien	0:8e01dca41002	1192	*/
donatien	0:8e01dca41002	1193	void
donatien	0:8e01dca41002	1194	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
donatien	0:8e01dca41002	1195	{
donatien	0:8e01dca41002	1196	PPPControl *pc = &pppControl[unit];
donatien	0:8e01dca41002	1197	int i;
donatien	0:8e01dca41002	1198	SYS_ARCH_DECL_PROTECT(lev);
donatien	0:8e01dca41002	1199
donatien	0:8e01dca41002	1200	LWIP_UNUSED_ARG(accomp);
donatien	0:8e01dca41002	1201	LWIP_UNUSED_ARG(pcomp);
donatien	0:8e01dca41002	1202	LWIP_UNUSED_ARG(mru);
donatien	0:8e01dca41002	1203
donatien	0:8e01dca41002	1204	/* Load the ACCM bits for the 32 control codes. */
donatien	0:8e01dca41002	1205	SYS_ARCH_PROTECT(lev);
donatien	0:8e01dca41002	1206	for (i = 0; i < 32 / 8; i++) {
donatien	0:8e01dca41002	1207	/* @todo: does this work? ext_accm has been modified from pppd! */
donatien	0:8e01dca41002	1208	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
donatien	0:8e01dca41002	1209	}
donatien	0:8e01dca41002	1210	SYS_ARCH_UNPROTECT(lev);
donatien	0:8e01dca41002	1211	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
donatien	0:8e01dca41002	1212	unit,
donatien	0:8e01dca41002	1213	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
donatien	0:8e01dca41002	1214	}
donatien	0:8e01dca41002	1215
donatien	0:8e01dca41002	1216	#if 0
donatien	0:8e01dca41002	1217	/*
donatien	0:8e01dca41002	1218	* ccp_test - ask kernel whether a given compression method
donatien	0:8e01dca41002	1219	* is acceptable for use. Returns 1 if the method and parameters
donatien	0:8e01dca41002	1220	* are OK, 0 if the method is known but the parameters are not OK
donatien	0:8e01dca41002	1221	* (e.g. code size should be reduced), or -1 if the method is unknown.
donatien	0:8e01dca41002	1222	*/
donatien	0:8e01dca41002	1223	int
donatien	0:8e01dca41002	1224	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
donatien	0:8e01dca41002	1225	{
donatien	0:8e01dca41002	1226	return 0; /* XXX Currently no compression. */
donatien	0:8e01dca41002	1227	}
donatien	0:8e01dca41002	1228
donatien	0:8e01dca41002	1229	/*
donatien	0:8e01dca41002	1230	* ccp_flags_set - inform kernel about the current state of CCP.
donatien	0:8e01dca41002	1231	*/
donatien	0:8e01dca41002	1232	void
donatien	0:8e01dca41002	1233	ccp_flags_set(int unit, int isopen, int isup)
donatien	0:8e01dca41002	1234	{
donatien	0:8e01dca41002	1235	/* XXX */
donatien	0:8e01dca41002	1236	}
donatien	0:8e01dca41002	1237
donatien	0:8e01dca41002	1238	/*
donatien	0:8e01dca41002	1239	* ccp_fatal_error - returns 1 if decompression was disabled as a
donatien	0:8e01dca41002	1240	* result of an error detected after decompression of a packet,
donatien	0:8e01dca41002	1241	* 0 otherwise. This is necessary because of patent nonsense.
donatien	0:8e01dca41002	1242	*/
donatien	0:8e01dca41002	1243	int
donatien	0:8e01dca41002	1244	ccp_fatal_error(int unit)
donatien	0:8e01dca41002	1245	{
donatien	0:8e01dca41002	1246	/* XXX */
donatien	0:8e01dca41002	1247	return 0;
donatien	0:8e01dca41002	1248	}
donatien	0:8e01dca41002	1249	#endif
donatien	0:8e01dca41002	1250
donatien	0:8e01dca41002	1251	/*
donatien	0:8e01dca41002	1252	* get_idle_time - return how long the link has been idle.
donatien	0:8e01dca41002	1253	*/
donatien	0:8e01dca41002	1254	int
donatien	0:8e01dca41002	1255	get_idle_time(int u, struct ppp_idle *ip)
donatien	0:8e01dca41002	1256	{
donatien	0:8e01dca41002	1257	/* XXX */
donatien	0:8e01dca41002	1258	LWIP_UNUSED_ARG(u);
donatien	0:8e01dca41002	1259	LWIP_UNUSED_ARG(ip);
donatien	0:8e01dca41002	1260
donatien	0:8e01dca41002	1261	return 0;
donatien	0:8e01dca41002	1262	}
donatien	0:8e01dca41002	1263
donatien	0:8e01dca41002	1264
donatien	0:8e01dca41002	1265	/*
donatien	0:8e01dca41002	1266	* Return user specified netmask, modified by any mask we might determine
donatien	0:8e01dca41002	1267	* for address `addr' (in network byte order).
donatien	0:8e01dca41002	1268	* Here we scan through the system's list of interfaces, looking for
donatien	0:8e01dca41002	1269	* any non-point-to-point interfaces which might appear to be on the same
donatien	0:8e01dca41002	1270	* network as `addr'. If we find any, we OR in their netmask to the
donatien	0:8e01dca41002	1271	* user-specified netmask.
donatien	0:8e01dca41002	1272	*/
donatien	0:8e01dca41002	1273	u32_t
donatien	0:8e01dca41002	1274	GetMask(u32_t addr)
donatien	0:8e01dca41002	1275	{
donatien	0:8e01dca41002	1276	u32_t mask, nmask;
donatien	0:8e01dca41002	1277
donatien	0:8e01dca41002	1278	htonl(addr);
donatien	0:8e01dca41002	1279	if (IP_CLASSA(addr)) { /* determine network mask for address class */
donatien	0:8e01dca41002	1280	nmask = IP_CLASSA_NET;
donatien	0:8e01dca41002	1281	} else if (IP_CLASSB(addr)) {
donatien	0:8e01dca41002	1282	nmask = IP_CLASSB_NET;
donatien	0:8e01dca41002	1283	} else {
donatien	0:8e01dca41002	1284	nmask = IP_CLASSC_NET;
donatien	0:8e01dca41002	1285	}
donatien	0:8e01dca41002	1286
donatien	0:8e01dca41002	1287	/* class D nets are disallowed by bad_ip_adrs */
donatien	0:8e01dca41002	1288	mask = subnetMask \| htonl(nmask);
donatien	0:8e01dca41002	1289
donatien	0:8e01dca41002	1290	/* XXX
donatien	0:8e01dca41002	1291	* Scan through the system's network interfaces.
donatien	0:8e01dca41002	1292	* Get each netmask and OR them into our mask.
donatien	0:8e01dca41002	1293	*/
donatien	0:8e01dca41002	1294
donatien	0:8e01dca41002	1295	return mask;
donatien	0:8e01dca41002	1296	}
donatien	0:8e01dca41002	1297
donatien	0:8e01dca41002	1298	/*
donatien	0:8e01dca41002	1299	* sifvjcomp - config tcp header compression
donatien	0:8e01dca41002	1300	*/
donatien	0:8e01dca41002	1301	int
donatien	0:8e01dca41002	1302	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
donatien	0:8e01dca41002	1303	{
donatien	0:8e01dca41002	1304	#if PPPOS_SUPPORT && VJ_SUPPORT
donatien	0:8e01dca41002	1305	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	1306
donatien	0:8e01dca41002	1307	pc->vjEnabled = vjcomp;
donatien	0:8e01dca41002	1308	pc->vjComp.compressSlot = cidcomp;
donatien	0:8e01dca41002	1309	pc->vjComp.maxSlotIndex = maxcid;
donatien	0:8e01dca41002	1310	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
donatien	0:8e01dca41002	1311	vjcomp, cidcomp, maxcid));
donatien	0:8e01dca41002	1312	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:8e01dca41002	1313	LWIP_UNUSED_ARG(pd);
donatien	0:8e01dca41002	1314	LWIP_UNUSED_ARG(vjcomp);
donatien	0:8e01dca41002	1315	LWIP_UNUSED_ARG(cidcomp);
donatien	0:8e01dca41002	1316	LWIP_UNUSED_ARG(maxcid);
donatien	0:8e01dca41002	1317	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:8e01dca41002	1318
donatien	0:8e01dca41002	1319	return 0;
donatien	0:8e01dca41002	1320	}
donatien	0:8e01dca41002	1321
donatien	0:8e01dca41002	1322	/*
donatien	0:8e01dca41002	1323	* pppifNetifInit - netif init callback
donatien	0:8e01dca41002	1324	*/
donatien	0:8e01dca41002	1325	static err_t
donatien	0:8e01dca41002	1326	pppifNetifInit(struct netif *netif)
donatien	0:8e01dca41002	1327	{
donatien	0:8e01dca41002	1328	netif->name[0] = 'p';
donatien	0:8e01dca41002	1329	netif->name[1] = 'p';
donatien	0:8e01dca41002	1330	netif->output = pppifOutput;
donatien	0:8e01dca41002	1331	netif->mtu = pppMTU((int)(size_t)netif->state);
donatien	0:8e01dca41002	1332	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
donatien	0:8e01dca41002	1333	#if LWIP_NETIF_HOSTNAME
donatien	0:8e01dca41002	1334	/* @todo: Initialize interface hostname */
donatien	0:8e01dca41002	1335	/* netif_set_hostname(netif, "lwip"); */
donatien	0:8e01dca41002	1336	#endif /* LWIP_NETIF_HOSTNAME */
donatien	0:8e01dca41002	1337	return ERR_OK;
donatien	0:8e01dca41002	1338	}
donatien	0:8e01dca41002	1339
donatien	0:8e01dca41002	1340
donatien	0:8e01dca41002	1341	/*
donatien	0:8e01dca41002	1342	* sifup - Config the interface up and enable IP packets to pass.
donatien	0:8e01dca41002	1343	*/
donatien	0:8e01dca41002	1344	int
donatien	0:8e01dca41002	1345	sifup(int pd)
donatien	0:8e01dca41002	1346	{
donatien	0:8e01dca41002	1347	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	1348	int st = 1;
donatien	0:8e01dca41002	1349
donatien	0:8e01dca41002	1350	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:8e01dca41002	1351	st = 0;
donatien	0:8e01dca41002	1352	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
donatien	0:8e01dca41002	1353	} else {
donatien	0:8e01dca41002	1354	netif_remove(&pc->netif);
donatien	0:8e01dca41002	1355	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
donatien	0:8e01dca41002	1356	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
donatien	0:8e01dca41002	1357	netif_set_up(&pc->netif);
donatien	0:8e01dca41002	1358	pc->if_up = 1;
donatien	0:8e01dca41002	1359	pc->errCode = PPPERR_NONE;
donatien	0:8e01dca41002	1360
donatien	0:8e01dca41002	1361	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
donatien	0:8e01dca41002	1362	if (pc->linkStatusCB) {
donatien	0:8e01dca41002	1363	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
donatien	0:8e01dca41002	1364	}
donatien	0:8e01dca41002	1365	} else {
donatien	0:8e01dca41002	1366	st = 0;
donatien	0:8e01dca41002	1367	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
donatien	0:8e01dca41002	1368	}
donatien	0:8e01dca41002	1369	}
donatien	0:8e01dca41002	1370
donatien	0:8e01dca41002	1371	return st;
donatien	0:8e01dca41002	1372	}
donatien	0:8e01dca41002	1373
donatien	0:8e01dca41002	1374	/*
donatien	0:8e01dca41002	1375	* sifnpmode - Set the mode for handling packets for a given NP.
donatien	0:8e01dca41002	1376	*/
donatien	0:8e01dca41002	1377	int
donatien	0:8e01dca41002	1378	sifnpmode(int u, int proto, enum NPmode mode)
donatien	0:8e01dca41002	1379	{
donatien	0:8e01dca41002	1380	LWIP_UNUSED_ARG(u);
donatien	0:8e01dca41002	1381	LWIP_UNUSED_ARG(proto);
donatien	0:8e01dca41002	1382	LWIP_UNUSED_ARG(mode);
donatien	0:8e01dca41002	1383	return 0;
donatien	0:8e01dca41002	1384	}
donatien	0:8e01dca41002	1385
donatien	0:8e01dca41002	1386	/*
donatien	0:8e01dca41002	1387	* sifdown - Config the interface down and disable IP.
donatien	0:8e01dca41002	1388	*/
donatien	0:8e01dca41002	1389	int
donatien	0:8e01dca41002	1390	sifdown(int pd)
donatien	0:8e01dca41002	1391	{
donatien	0:8e01dca41002	1392	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	1393	int st = 1;
donatien	0:8e01dca41002	1394
donatien	0:8e01dca41002	1395	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:8e01dca41002	1396	st = 0;
donatien	0:8e01dca41002	1397	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
donatien	0:8e01dca41002	1398	} else {
donatien	0:8e01dca41002	1399	pc->if_up = 0;
donatien	0:8e01dca41002	1400	/* make sure the netif status callback is called */
donatien	0:8e01dca41002	1401	netif_set_down(&pc->netif);
donatien	0:8e01dca41002	1402	netif_remove(&pc->netif);
donatien	0:8e01dca41002	1403	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
donatien	0:8e01dca41002	1404	if (pc->linkStatusCB) {
donatien	0:8e01dca41002	1405	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
donatien	0:8e01dca41002	1406	}
donatien	0:8e01dca41002	1407	}
donatien	0:8e01dca41002	1408	return st;
donatien	0:8e01dca41002	1409	}
donatien	0:8e01dca41002	1410
donatien	0:8e01dca41002	1411	/**
donatien	0:8e01dca41002	1412	* sifaddr - Config the interface IP addresses and netmask.
donatien	0:8e01dca41002	1413	* @param pd Interface unit ???
donatien	0:8e01dca41002	1414	* @param o Our IP address ???
donatien	0:8e01dca41002	1415	* @param h His IP address ???
donatien	0:8e01dca41002	1416	* @param m IP subnet mask ???
donatien	0:8e01dca41002	1417	* @param ns1 Primary DNS
donatien	0:8e01dca41002	1418	* @param ns2 Secondary DNS
donatien	0:8e01dca41002	1419	*/
donatien	0:8e01dca41002	1420	int
donatien	0:8e01dca41002	1421	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
donatien	0:8e01dca41002	1422	{
donatien	0:8e01dca41002	1423	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	1424	int st = 1;
donatien	0:8e01dca41002	1425
donatien	0:8e01dca41002	1426	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:8e01dca41002	1427	st = 0;
donatien	0:8e01dca41002	1428	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
donatien	0:8e01dca41002	1429	} else {
donatien	0:8e01dca41002	1430	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
donatien	0:8e01dca41002	1431	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
donatien	0:8e01dca41002	1432	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
donatien	0:8e01dca41002	1433	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
donatien	0:8e01dca41002	1434	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
donatien	0:8e01dca41002	1435	}
donatien	0:8e01dca41002	1436	return st;
donatien	0:8e01dca41002	1437	}
donatien	0:8e01dca41002	1438
donatien	0:8e01dca41002	1439	/**
donatien	0:8e01dca41002	1440	* cifaddr - Clear the interface IP addresses, and delete routes
donatien	0:8e01dca41002	1441	* through the interface if possible.
donatien	0:8e01dca41002	1442	* @param pd Interface unit ???
donatien	0:8e01dca41002	1443	* @param o Our IP address ???
donatien	0:8e01dca41002	1444	* @param h IP broadcast address ???
donatien	0:8e01dca41002	1445	*/
donatien	0:8e01dca41002	1446	int
donatien	0:8e01dca41002	1447	cifaddr( int pd, u32_t o, u32_t h)
donatien	0:8e01dca41002	1448	{
donatien	0:8e01dca41002	1449	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	1450	int st = 1;
donatien	0:8e01dca41002	1451
donatien	0:8e01dca41002	1452	LWIP_UNUSED_ARG(o);
donatien	0:8e01dca41002	1453	LWIP_UNUSED_ARG(h);
donatien	0:8e01dca41002	1454	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:8e01dca41002	1455	st = 0;
donatien	0:8e01dca41002	1456	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
donatien	0:8e01dca41002	1457	} else {
donatien	0:8e01dca41002	1458	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
donatien	0:8e01dca41002	1459	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
donatien	0:8e01dca41002	1460	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
donatien	0:8e01dca41002	1461	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
donatien	0:8e01dca41002	1462	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
donatien	0:8e01dca41002	1463	}
donatien	0:8e01dca41002	1464	return st;
donatien	0:8e01dca41002	1465	}
donatien	0:8e01dca41002	1466
donatien	0:8e01dca41002	1467	/*
donatien	0:8e01dca41002	1468	* sifdefaultroute - assign a default route through the address given.
donatien	0:8e01dca41002	1469	*/
donatien	0:8e01dca41002	1470	int
donatien	0:8e01dca41002	1471	sifdefaultroute(int pd, u32_t l, u32_t g)
donatien	0:8e01dca41002	1472	{
donatien	0:8e01dca41002	1473	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	1474	int st = 1;
donatien	0:8e01dca41002	1475
donatien	0:8e01dca41002	1476	LWIP_UNUSED_ARG(l);
donatien	0:8e01dca41002	1477	LWIP_UNUSED_ARG(g);
donatien	0:8e01dca41002	1478
donatien	0:8e01dca41002	1479	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:8e01dca41002	1480	st = 0;
donatien	0:8e01dca41002	1481	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
donatien	0:8e01dca41002	1482	} else {
donatien	0:8e01dca41002	1483	netif_set_default(&pc->netif);
donatien	0:8e01dca41002	1484	}
donatien	0:8e01dca41002	1485
donatien	0:8e01dca41002	1486	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
donatien	0:8e01dca41002	1487
donatien	0:8e01dca41002	1488	return st;
donatien	0:8e01dca41002	1489	}
donatien	0:8e01dca41002	1490
donatien	0:8e01dca41002	1491	/*
donatien	0:8e01dca41002	1492	* cifdefaultroute - delete a default route through the address given.
donatien	0:8e01dca41002	1493	*/
donatien	0:8e01dca41002	1494	int
donatien	0:8e01dca41002	1495	cifdefaultroute(int pd, u32_t l, u32_t g)
donatien	0:8e01dca41002	1496	{
donatien	0:8e01dca41002	1497	PPPControl *pc = &pppControl[pd];
donatien	0:8e01dca41002	1498	int st = 1;
donatien	0:8e01dca41002	1499
donatien	0:8e01dca41002	1500	LWIP_UNUSED_ARG(l);
donatien	0:8e01dca41002	1501	LWIP_UNUSED_ARG(g);
donatien	0:8e01dca41002	1502
donatien	0:8e01dca41002	1503	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:8e01dca41002	1504	st = 0;
donatien	0:8e01dca41002	1505	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
donatien	0:8e01dca41002	1506	} else {
donatien	0:8e01dca41002	1507	netif_set_default(NULL);
donatien	0:8e01dca41002	1508	}
donatien	0:8e01dca41002	1509
donatien	0:8e01dca41002	1510	return st;
donatien	0:8e01dca41002	1511	}
donatien	0:8e01dca41002	1512
donatien	0:8e01dca41002	1513	/**********************************/
donatien	0:8e01dca41002	1514	/* LOCAL FUNCTION DEFINITIONS */
donatien	0:8e01dca41002	1515	/**********************************/
donatien	0:8e01dca41002	1516
donatien	0:8e01dca41002	1517	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
donatien	0:8e01dca41002	1518	/* The main PPP process function. This implements the state machine according
donatien	0:8e01dca41002	1519	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
donatien	0:8e01dca41002	1520	static void
donatien	0:8e01dca41002	1521	pppInputThread(void *arg)
donatien	0:8e01dca41002	1522	{
donatien	0:8e01dca41002	1523	int count;
donatien	0:8e01dca41002	1524	PPPControlRx *pcrx = arg;
donatien	0:8e01dca41002	1525
donatien	0:8e01dca41002	1526	#if !__LWIP_ORIG
donatien	0:8e01dca41002	1527	do
donatien	0:8e01dca41002	1528	{
donatien	0:8e01dca41002	1529	sys_arch_mbox_fetch(&pppMbox, (void**)&pcrx, 0); //Wait indefinitely
donatien	0:8e01dca41002	1530	#endif
donatien	0:8e01dca41002	1531
donatien	0:8e01dca41002	1532	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
donatien	0:8e01dca41002	1533	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
donatien	0:8e01dca41002	1534	if(count > 0) {
donatien	0:8e01dca41002	1535	pppInProc(pcrx, pcrx->rxbuf, count);
donatien	0:8e01dca41002	1536	} else {
donatien	0:8e01dca41002	1537	/* nothing received, give other tasks a chance to run */
donatien	0:8e01dca41002	1538	sys_msleep(1);
donatien	0:8e01dca41002	1539	}
donatien	0:8e01dca41002	1540	}
donatien	0:8e01dca41002	1541	#if !__LWIP_ORIG
donatien	0:8e01dca41002	1542	} while(1); //Never terminates
donatien	0:8e01dca41002	1543	#endif
donatien	0:8e01dca41002	1544	}
donatien	0:8e01dca41002	1545	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
donatien	0:8e01dca41002	1546
donatien	0:8e01dca41002	1547	#if PPPOE_SUPPORT
donatien	0:8e01dca41002	1548
donatien	0:8e01dca41002	1549	void
donatien	0:8e01dca41002	1550	pppOverEthernetInitFailed(int pd)
donatien	0:8e01dca41002	1551	{
donatien	0:8e01dca41002	1552	PPPControl* pc;
donatien	0:8e01dca41002	1553
donatien	0:8e01dca41002	1554	pppHup(pd);
donatien	0:8e01dca41002	1555	pppStop(pd);
donatien	0:8e01dca41002	1556
donatien	0:8e01dca41002	1557	pc = &pppControl[pd];
donatien	0:8e01dca41002	1558	pppoe_destroy(&pc->netif);
donatien	0:8e01dca41002	1559	pc->openFlag = 0;
donatien	0:8e01dca41002	1560
donatien	0:8e01dca41002	1561	if(pc->linkStatusCB) {
donatien	0:8e01dca41002	1562	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
donatien	0:8e01dca41002	1563	}
donatien	0:8e01dca41002	1564	}
donatien	0:8e01dca41002	1565
donatien	0:8e01dca41002	1566	static void
donatien	0:8e01dca41002	1567	pppOverEthernetLinkStatusCB(int pd, int up)
donatien	0:8e01dca41002	1568	{
donatien	0:8e01dca41002	1569	if(up) {
donatien	0:8e01dca41002	1570	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
donatien	0:8e01dca41002	1571	pppStart(pd);
donatien	0:8e01dca41002	1572	} else {
donatien	0:8e01dca41002	1573	pppOverEthernetInitFailed(pd);
donatien	0:8e01dca41002	1574	}
donatien	0:8e01dca41002	1575	}
donatien	0:8e01dca41002	1576	#endif /* PPPOE_SUPPORT */
donatien	0:8e01dca41002	1577
donatien	0:8e01dca41002	1578	struct pbuf *
donatien	0:8e01dca41002	1579	pppSingleBuf(struct pbuf *p)
donatien	0:8e01dca41002	1580	{
donatien	0:8e01dca41002	1581	struct pbuf q, b;
donatien	0:8e01dca41002	1582	u_char *pl;
donatien	0:8e01dca41002	1583
donatien	0:8e01dca41002	1584	if(p->tot_len == p->len) {
donatien	0:8e01dca41002	1585	return p;
donatien	0:8e01dca41002	1586	}
donatien	0:8e01dca41002	1587
donatien	0:8e01dca41002	1588	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
donatien	0:8e01dca41002	1589	if(!q) {
donatien	0:8e01dca41002	1590	PPPDEBUG(LOG_ERR,
donatien	0:8e01dca41002	1591	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
donatien	0:8e01dca41002	1592	return p; /* live dangerously */
donatien	0:8e01dca41002	1593	}
donatien	0:8e01dca41002	1594
donatien	0:8e01dca41002	1595	for(b = p, pl = q->payload; b != NULL; b = b->next) {
donatien	0:8e01dca41002	1596	MEMCPY(pl, b->payload, b->len);
donatien	0:8e01dca41002	1597	pl += b->len;
donatien	0:8e01dca41002	1598	}
donatien	0:8e01dca41002	1599
donatien	0:8e01dca41002	1600	pbuf_free(p);
donatien	0:8e01dca41002	1601
donatien	0:8e01dca41002	1602	return q;
donatien	0:8e01dca41002	1603	}
donatien	0:8e01dca41002	1604
donatien	0:8e01dca41002	1605	struct pppInputHeader {
donatien	0:8e01dca41002	1606	int unit;
donatien	0:8e01dca41002	1607	u16_t proto;
donatien	0:8e01dca41002	1608	};
donatien	0:8e01dca41002	1609
donatien	0:8e01dca41002	1610	/*
donatien	0:8e01dca41002	1611	* Pass the processed input packet to the appropriate handler.
donatien	0:8e01dca41002	1612	* This function and all handlers run in the context of the tcpip_thread
donatien	0:8e01dca41002	1613	*/
donatien	0:8e01dca41002	1614	static void
donatien	0:8e01dca41002	1615	pppInput(void *arg)
donatien	0:8e01dca41002	1616	{
donatien	0:8e01dca41002	1617	struct pbuf nb = (struct pbuf )arg;
donatien	0:8e01dca41002	1618	u16_t protocol;
donatien	0:8e01dca41002	1619	int pd;
donatien	0:8e01dca41002	1620
donatien	0:8e01dca41002	1621	pd = ((struct pppInputHeader *)nb->payload)->unit;
donatien	0:8e01dca41002	1622	protocol = ((struct pppInputHeader *)nb->payload)->proto;
donatien	0:8e01dca41002	1623
donatien	0:8e01dca41002	1624	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
donatien	0:8e01dca41002	1625	LWIP_ASSERT("pbuf_header failed\n", 0);
donatien	0:8e01dca41002	1626	goto drop;
donatien	0:8e01dca41002	1627	}
donatien	0:8e01dca41002	1628
donatien	0:8e01dca41002	1629	LINK_STATS_INC(link.recv);
donatien	0:8e01dca41002	1630	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
donatien	0:8e01dca41002	1631	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
donatien	0:8e01dca41002	1632
donatien	0:8e01dca41002	1633	/*
donatien	0:8e01dca41002	1634	* Toss all non-LCP packets unless LCP is OPEN.
donatien	0:8e01dca41002	1635	* Until we get past the authentication phase, toss all packets
donatien	0:8e01dca41002	1636	* except LCP, LQR and authentication packets.
donatien	0:8e01dca41002	1637	*/
donatien	0:8e01dca41002	1638	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
donatien	0:8e01dca41002	1639	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
donatien	0:8e01dca41002	1640	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
donatien	0:8e01dca41002	1641	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
donatien	0:8e01dca41002	1642	goto drop;
donatien	0:8e01dca41002	1643	}
donatien	0:8e01dca41002	1644	}
donatien	0:8e01dca41002	1645
donatien	0:8e01dca41002	1646	switch(protocol) {
donatien	0:8e01dca41002	1647	case PPP_VJC_COMP: /* VJ compressed TCP */
donatien	0:8e01dca41002	1648	#if PPPOS_SUPPORT && VJ_SUPPORT
donatien	0:8e01dca41002	1649	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
donatien	0:8e01dca41002	1650	/*
donatien	0:8e01dca41002	1651	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
donatien	0:8e01dca41002	1652	* pass the result to IP.
donatien	0:8e01dca41002	1653	*/
donatien	0:8e01dca41002	1654	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
donatien	0:8e01dca41002	1655	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
donatien	0:8e01dca41002	1656	return;
donatien	0:8e01dca41002	1657	}
donatien	0:8e01dca41002	1658	/* Something's wrong so drop it. */
donatien	0:8e01dca41002	1659	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
donatien	0:8e01dca41002	1660	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:8e01dca41002	1661	/* No handler for this protocol so drop the packet. */
donatien	0:8e01dca41002	1662	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
donatien	0:8e01dca41002	1663	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:8e01dca41002	1664	break;
donatien	0:8e01dca41002	1665
donatien	0:8e01dca41002	1666	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
donatien	0:8e01dca41002	1667	#if PPPOS_SUPPORT && VJ_SUPPORT
donatien	0:8e01dca41002	1668	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
donatien	0:8e01dca41002	1669	/*
donatien	0:8e01dca41002	1670	* Process the TCP/IP header for VJ header compression and then pass
donatien	0:8e01dca41002	1671	* the packet to IP.
donatien	0:8e01dca41002	1672	*/
donatien	0:8e01dca41002	1673	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
donatien	0:8e01dca41002	1674	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
donatien	0:8e01dca41002	1675	return;
donatien	0:8e01dca41002	1676	}
donatien	0:8e01dca41002	1677	/* Something's wrong so drop it. */
donatien	0:8e01dca41002	1678	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
donatien	0:8e01dca41002	1679	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:8e01dca41002	1680	/* No handler for this protocol so drop the packet. */
donatien	0:8e01dca41002	1681	PPPDEBUG(LOG_INFO,
donatien	0:8e01dca41002	1682	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
donatien	0:8e01dca41002	1683	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
donatien	0:8e01dca41002	1684	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:8e01dca41002	1685	break;
donatien	0:8e01dca41002	1686
donatien	0:8e01dca41002	1687	case PPP_IP: /* Internet Protocol */
donatien	0:8e01dca41002	1688	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
donatien	0:8e01dca41002	1689	if (pppControl[pd].netif.input) {
donatien	0:8e01dca41002	1690	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
donatien	0:8e01dca41002	1691	return;
donatien	0:8e01dca41002	1692	}
donatien	0:8e01dca41002	1693	break;
donatien	0:8e01dca41002	1694
donatien	0:8e01dca41002	1695	default: {
donatien	0:8e01dca41002	1696	struct protent *protp;
donatien	0:8e01dca41002	1697	int i;
donatien	0:8e01dca41002	1698
donatien	0:8e01dca41002	1699	/*
donatien	0:8e01dca41002	1700	* Upcall the proper protocol input routine.
donatien	0:8e01dca41002	1701	*/
donatien	0:8e01dca41002	1702	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
donatien	0:8e01dca41002	1703	if (protp->protocol == protocol && protp->enabled_flag) {
donatien	0:8e01dca41002	1704	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
donatien	0:8e01dca41002	1705	nb = pppSingleBuf(nb);
donatien	0:8e01dca41002	1706	(*protp->input)(pd, nb->payload, nb->len);
donatien	0:8e01dca41002	1707	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
donatien	0:8e01dca41002	1708	goto out;
donatien	0:8e01dca41002	1709	}
donatien	0:8e01dca41002	1710	}
donatien	0:8e01dca41002	1711
donatien	0:8e01dca41002	1712	/* No handler for this protocol so reject the packet. */
donatien	0:8e01dca41002	1713	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
donatien	0:8e01dca41002	1714	if (pbuf_header(nb, sizeof(protocol))) {
donatien	0:8e01dca41002	1715	LWIP_ASSERT("pbuf_header failed\n", 0);
donatien	0:8e01dca41002	1716	goto drop;
donatien	0:8e01dca41002	1717	}
donatien	0:8e01dca41002	1718	#if BYTE_ORDER == LITTLE_ENDIAN
donatien	0:8e01dca41002	1719	protocol = htons(protocol);
donatien	0:8e01dca41002	1720	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
donatien	0:8e01dca41002	1721	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
donatien	0:8e01dca41002	1722	lcp_sprotrej(pd, nb->payload, nb->len);
donatien	0:8e01dca41002	1723	}
donatien	0:8e01dca41002	1724	break;
donatien	0:8e01dca41002	1725	}
donatien	0:8e01dca41002	1726
donatien	0:8e01dca41002	1727	drop:
donatien	0:8e01dca41002	1728	LINK_STATS_INC(link.drop);
donatien	0:8e01dca41002	1729	snmp_inc_ifindiscards(&pppControl[pd].netif);
donatien	0:8e01dca41002	1730
donatien	0:8e01dca41002	1731	out:
donatien	0:8e01dca41002	1732	pbuf_free(nb);
donatien	0:8e01dca41002	1733	return;
donatien	0:8e01dca41002	1734	}
donatien	0:8e01dca41002	1735
donatien	0:8e01dca41002	1736	#if PPPOS_SUPPORT
donatien	0:8e01dca41002	1737	/*
donatien	0:8e01dca41002	1738	* Drop the input packet.
donatien	0:8e01dca41002	1739	*/
donatien	0:8e01dca41002	1740	static void
donatien	0:8e01dca41002	1741	pppDrop(PPPControlRx *pcrx)
donatien	0:8e01dca41002	1742	{
donatien	0:8e01dca41002	1743	if (pcrx->inHead != NULL) {
donatien	0:8e01dca41002	1744	#if 0
donatien	0:8e01dca41002	1745	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
donatien	0:8e01dca41002	1746	#endif
donatien	0:8e01dca41002	1747	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
donatien	0:8e01dca41002	1748	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
donatien	0:8e01dca41002	1749	pbuf_free(pcrx->inTail);
donatien	0:8e01dca41002	1750	}
donatien	0:8e01dca41002	1751	pbuf_free(pcrx->inHead);
donatien	0:8e01dca41002	1752	pcrx->inHead = NULL;
donatien	0:8e01dca41002	1753	pcrx->inTail = NULL;
donatien	0:8e01dca41002	1754	}
donatien	0:8e01dca41002	1755	#if VJ_SUPPORT
donatien	0:8e01dca41002	1756	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
donatien	0:8e01dca41002	1757	#endif /* VJ_SUPPORT */
donatien	0:8e01dca41002	1758
donatien	0:8e01dca41002	1759	LINK_STATS_INC(link.drop);
donatien	0:8e01dca41002	1760	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
donatien	0:8e01dca41002	1761	}
donatien	0:8e01dca41002	1762
donatien	0:8e01dca41002	1763	/** Pass received raw characters to PPPoS to be decoded. This function is
donatien	0:8e01dca41002	1764	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
donatien	0:8e01dca41002	1765	*
donatien	0:8e01dca41002	1766	* @param pd PPP descriptor index, returned by pppOpen()
donatien	0:8e01dca41002	1767	* @param data received data
donatien	0:8e01dca41002	1768	* @param len length of received data
donatien	0:8e01dca41002	1769	*/
donatien	0:8e01dca41002	1770	void
donatien	0:8e01dca41002	1771	pppos_input(int pd, u_char* data, int len)
donatien	0:8e01dca41002	1772	{
donatien	0:8e01dca41002	1773	pppInProc(&pppControl[pd].rx, data, len);
donatien	0:8e01dca41002	1774	}
donatien	0:8e01dca41002	1775
donatien	0:8e01dca41002	1776	/**
donatien	0:8e01dca41002	1777	* Process a received octet string.
donatien	0:8e01dca41002	1778	*/
donatien	0:8e01dca41002	1779	static void
donatien	0:8e01dca41002	1780	pppInProc(PPPControlRx pcrx, u_char s, int l)
donatien	0:8e01dca41002	1781	{
donatien	0:8e01dca41002	1782	struct pbuf *nextNBuf;
donatien	0:8e01dca41002	1783	u_char curChar;
donatien	0:8e01dca41002	1784	u_char escaped;
donatien	0:8e01dca41002	1785	SYS_ARCH_DECL_PROTECT(lev);
donatien	0:8e01dca41002	1786
donatien	0:8e01dca41002	1787	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
donatien	0:8e01dca41002	1788	while (l-- > 0) {
donatien	0:8e01dca41002	1789	curChar = *s++;
donatien	0:8e01dca41002	1790
donatien	0:8e01dca41002	1791	SYS_ARCH_PROTECT(lev);
donatien	0:8e01dca41002	1792	escaped = ESCAPE_P(pcrx->inACCM, curChar);
donatien	0:8e01dca41002	1793	SYS_ARCH_UNPROTECT(lev);
donatien	0:8e01dca41002	1794	/* Handle special characters. */
donatien	0:8e01dca41002	1795	if (escaped) {
donatien	0:8e01dca41002	1796	/* Check for escape sequences. */
donatien	0:8e01dca41002	1797	/* XXX Note that this does not handle an escaped 0x5d character which
donatien	0:8e01dca41002	1798	* would appear as an escape character. Since this is an ASCII ']'
donatien	0:8e01dca41002	1799	* and there is no reason that I know of to escape it, I won't complicate
donatien	0:8e01dca41002	1800	* the code to handle this case. GLL */
donatien	0:8e01dca41002	1801	if (curChar == PPP_ESCAPE) {
donatien	0:8e01dca41002	1802	pcrx->inEscaped = 1;
donatien	0:8e01dca41002	1803	/* Check for the flag character. */
donatien	0:8e01dca41002	1804	} else if (curChar == PPP_FLAG) {
donatien	0:8e01dca41002	1805	/* If this is just an extra flag character, ignore it. */
donatien	0:8e01dca41002	1806	if (pcrx->inState <= PDADDRESS) {
donatien	0:8e01dca41002	1807	/* ignore it */;
donatien	0:8e01dca41002	1808	/* If we haven't received the packet header, drop what has come in. */
donatien	0:8e01dca41002	1809	} else if (pcrx->inState < PDDATA) {
donatien	0:8e01dca41002	1810	PPPDEBUG(LOG_WARNING,
donatien	0:8e01dca41002	1811	("pppInProc[%d]: Dropping incomplete packet %d\n",
donatien	0:8e01dca41002	1812	pcrx->pd, pcrx->inState));
donatien	0:8e01dca41002	1813	LINK_STATS_INC(link.lenerr);
donatien	0:8e01dca41002	1814	pppDrop(pcrx);
donatien	0:8e01dca41002	1815	/* If the fcs is invalid, drop the packet. */
donatien	0:8e01dca41002	1816	} else if (pcrx->inFCS != PPP_GOODFCS) {
donatien	0:8e01dca41002	1817	PPPDEBUG(LOG_INFO,
donatien	0:8e01dca41002	1818	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
donatien	0:8e01dca41002	1819	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
donatien	0:8e01dca41002	1820	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
donatien	0:8e01dca41002	1821	LINK_STATS_INC(link.chkerr);
donatien	0:8e01dca41002	1822	pppDrop(pcrx);
donatien	0:8e01dca41002	1823	/* Otherwise it's a good packet so pass it on. */
donatien	0:8e01dca41002	1824	} else {
donatien	0:8e01dca41002	1825	struct pbuf *inp;
donatien	0:8e01dca41002	1826	/* Trim off the checksum. */
donatien	0:8e01dca41002	1827	if(pcrx->inTail->len >= 2) {
donatien	0:8e01dca41002	1828	pcrx->inTail->len -= 2;
donatien	0:8e01dca41002	1829
donatien	0:8e01dca41002	1830	pcrx->inTail->tot_len = pcrx->inTail->len;
donatien	0:8e01dca41002	1831	if (pcrx->inTail != pcrx->inHead) {
donatien	0:8e01dca41002	1832	pbuf_cat(pcrx->inHead, pcrx->inTail);
donatien	0:8e01dca41002	1833	}
donatien	0:8e01dca41002	1834	} else {
donatien	0:8e01dca41002	1835	pcrx->inTail->tot_len = pcrx->inTail->len;
donatien	0:8e01dca41002	1836	if (pcrx->inTail != pcrx->inHead) {
donatien	0:8e01dca41002	1837	pbuf_cat(pcrx->inHead, pcrx->inTail);
donatien	0:8e01dca41002	1838	}
donatien	0:8e01dca41002	1839
donatien	0:8e01dca41002	1840	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
donatien	0:8e01dca41002	1841	}
donatien	0:8e01dca41002	1842
donatien	0:8e01dca41002	1843	/* Dispatch the packet thereby consuming it. */
donatien	0:8e01dca41002	1844	inp = pcrx->inHead;
donatien	0:8e01dca41002	1845	/* Packet consumed, release our references. */
donatien	0:8e01dca41002	1846	pcrx->inHead = NULL;
donatien	0:8e01dca41002	1847	pcrx->inTail = NULL;
donatien	0:8e01dca41002	1848	#if PPP_INPROC_MULTITHREADED
donatien	0:8e01dca41002	1849	if(tcpip_callback_with_block(pppInput, inp, 0) != ERR_OK) {
donatien	0:8e01dca41002	1850	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
donatien	0:8e01dca41002	1851	pbuf_free(inp);
donatien	0:8e01dca41002	1852	LINK_STATS_INC(link.drop);
donatien	0:8e01dca41002	1853	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
donatien	0:8e01dca41002	1854	}
donatien	0:8e01dca41002	1855	#else /* PPP_INPROC_MULTITHREADED */
donatien	0:8e01dca41002	1856	pppInput(inp);
donatien	0:8e01dca41002	1857	#endif /* PPP_INPROC_MULTITHREADED */
donatien	0:8e01dca41002	1858	}
donatien	0:8e01dca41002	1859
donatien	0:8e01dca41002	1860	/* Prepare for a new packet. */
donatien	0:8e01dca41002	1861	pcrx->inFCS = PPP_INITFCS;
donatien	0:8e01dca41002	1862	pcrx->inState = PDADDRESS;
donatien	0:8e01dca41002	1863	pcrx->inEscaped = 0;
donatien	0:8e01dca41002	1864	/* Other characters are usually control characters that may have
donatien	0:8e01dca41002	1865	* been inserted by the physical layer so here we just drop them. */
donatien	0:8e01dca41002	1866	} else {
donatien	0:8e01dca41002	1867	PPPDEBUG(LOG_WARNING,
donatien	0:8e01dca41002	1868	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
donatien	0:8e01dca41002	1869	}
donatien	0:8e01dca41002	1870	/* Process other characters. */
donatien	0:8e01dca41002	1871	} else {
donatien	0:8e01dca41002	1872	/* Unencode escaped characters. */
donatien	0:8e01dca41002	1873	if (pcrx->inEscaped) {
donatien	0:8e01dca41002	1874	pcrx->inEscaped = 0;
donatien	0:8e01dca41002	1875	curChar ^= PPP_TRANS;
donatien	0:8e01dca41002	1876	}
donatien	0:8e01dca41002	1877
donatien	0:8e01dca41002	1878	/* Process character relative to current state. */
donatien	0:8e01dca41002	1879	switch(pcrx->inState) {
donatien	0:8e01dca41002	1880	case PDIDLE: /* Idle state - waiting. */
donatien	0:8e01dca41002	1881	/* Drop the character if it's not 0xff
donatien	0:8e01dca41002	1882	* we would have processed a flag character above. */
donatien	0:8e01dca41002	1883	if (curChar != PPP_ALLSTATIONS) {
donatien	0:8e01dca41002	1884	break;
donatien	0:8e01dca41002	1885	}
donatien	0:8e01dca41002	1886
donatien	0:8e01dca41002	1887	/* Fall through */
donatien	0:8e01dca41002	1888	case PDSTART: /* Process start flag. */
donatien	0:8e01dca41002	1889	/* Prepare for a new packet. */
donatien	0:8e01dca41002	1890	pcrx->inFCS = PPP_INITFCS;
donatien	0:8e01dca41002	1891
donatien	0:8e01dca41002	1892	/* Fall through */
donatien	0:8e01dca41002	1893	case PDADDRESS: /* Process address field. */
donatien	0:8e01dca41002	1894	if (curChar == PPP_ALLSTATIONS) {
donatien	0:8e01dca41002	1895	pcrx->inState = PDCONTROL;
donatien	0:8e01dca41002	1896	break;
donatien	0:8e01dca41002	1897	}
donatien	0:8e01dca41002	1898	/* Else assume compressed address and control fields so
donatien	0:8e01dca41002	1899	* fall through to get the protocol... */
donatien	0:8e01dca41002	1900	case PDCONTROL: /* Process control field. */
donatien	0:8e01dca41002	1901	/* If we don't get a valid control code, restart. */
donatien	0:8e01dca41002	1902	if (curChar == PPP_UI) {
donatien	0:8e01dca41002	1903	pcrx->inState = PDPROTOCOL1;
donatien	0:8e01dca41002	1904	break;
donatien	0:8e01dca41002	1905	}
donatien	0:8e01dca41002	1906	#if 0
donatien	0:8e01dca41002	1907	else {
donatien	0:8e01dca41002	1908	PPPDEBUG(LOG_WARNING,
donatien	0:8e01dca41002	1909	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
donatien	0:8e01dca41002	1910	pcrx->inState = PDSTART;
donatien	0:8e01dca41002	1911	}
donatien	0:8e01dca41002	1912	#endif
donatien	0:8e01dca41002	1913	case PDPROTOCOL1: /* Process protocol field 1. */
donatien	0:8e01dca41002	1914	/* If the lower bit is set, this is the end of the protocol
donatien	0:8e01dca41002	1915	* field. */
donatien	0:8e01dca41002	1916	if (curChar & 1) {
donatien	0:8e01dca41002	1917	pcrx->inProtocol = curChar;
donatien	0:8e01dca41002	1918	pcrx->inState = PDDATA;
donatien	0:8e01dca41002	1919	} else {
donatien	0:8e01dca41002	1920	pcrx->inProtocol = (u_int)curChar << 8;
donatien	0:8e01dca41002	1921	pcrx->inState = PDPROTOCOL2;
donatien	0:8e01dca41002	1922	}
donatien	0:8e01dca41002	1923	break;
donatien	0:8e01dca41002	1924	case PDPROTOCOL2: /* Process protocol field 2. */
donatien	0:8e01dca41002	1925	pcrx->inProtocol \|= curChar;
donatien	0:8e01dca41002	1926	pcrx->inState = PDDATA;
donatien	0:8e01dca41002	1927	break;
donatien	0:8e01dca41002	1928	case PDDATA: /* Process data byte. */
donatien	0:8e01dca41002	1929	/* Make space to receive processed data. */
donatien	0:8e01dca41002	1930	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
donatien	0:8e01dca41002	1931	if (pcrx->inTail != NULL) {
donatien	0:8e01dca41002	1932	pcrx->inTail->tot_len = pcrx->inTail->len;
donatien	0:8e01dca41002	1933	if (pcrx->inTail != pcrx->inHead) {
donatien	0:8e01dca41002	1934	pbuf_cat(pcrx->inHead, pcrx->inTail);
donatien	0:8e01dca41002	1935	/* give up the inTail reference now */
donatien	0:8e01dca41002	1936	pcrx->inTail = NULL;
donatien	0:8e01dca41002	1937	}
donatien	0:8e01dca41002	1938	}
donatien	0:8e01dca41002	1939	/* If we haven't started a packet, we need a packet header. */
donatien	0:8e01dca41002	1940	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
donatien	0:8e01dca41002	1941	if (nextNBuf == NULL) {
donatien	0:8e01dca41002	1942	/* No free buffers. Drop the input packet and let the
donatien	0:8e01dca41002	1943	* higher layers deal with it. Continue processing
donatien	0:8e01dca41002	1944	* the received pbuf chain in case a new packet starts. */
donatien	0:8e01dca41002	1945	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
donatien	0:8e01dca41002	1946	LINK_STATS_INC(link.memerr);
donatien	0:8e01dca41002	1947	pppDrop(pcrx);
donatien	0:8e01dca41002	1948	pcrx->inState = PDSTART; /* Wait for flag sequence. */
donatien	0:8e01dca41002	1949	break;
donatien	0:8e01dca41002	1950	}
donatien	0:8e01dca41002	1951	if (pcrx->inHead == NULL) {
donatien	0:8e01dca41002	1952	struct pppInputHeader *pih = nextNBuf->payload;
donatien	0:8e01dca41002	1953
donatien	0:8e01dca41002	1954	pih->unit = pcrx->pd;
donatien	0:8e01dca41002	1955	pih->proto = pcrx->inProtocol;
donatien	0:8e01dca41002	1956
donatien	0:8e01dca41002	1957	nextNBuf->len += sizeof(*pih);
donatien	0:8e01dca41002	1958
donatien	0:8e01dca41002	1959	pcrx->inHead = nextNBuf;
donatien	0:8e01dca41002	1960	}
donatien	0:8e01dca41002	1961	pcrx->inTail = nextNBuf;
donatien	0:8e01dca41002	1962	}
donatien	0:8e01dca41002	1963	/* Load character into buffer. */
donatien	0:8e01dca41002	1964	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
donatien	0:8e01dca41002	1965	break;
donatien	0:8e01dca41002	1966	}
donatien	0:8e01dca41002	1967
donatien	0:8e01dca41002	1968	/* update the frame check sequence number. */
donatien	0:8e01dca41002	1969	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
donatien	0:8e01dca41002	1970	}
donatien	0:8e01dca41002	1971	} /* while (l-- > 0), all bytes processed */
donatien	0:8e01dca41002	1972
donatien	0:8e01dca41002	1973	avRandomize();
donatien	0:8e01dca41002	1974	}
donatien	0:8e01dca41002	1975	#endif /* PPPOS_SUPPORT */
donatien	0:8e01dca41002	1976
donatien	0:8e01dca41002	1977	#if PPPOE_SUPPORT
donatien	0:8e01dca41002	1978	void
donatien	0:8e01dca41002	1979	pppInProcOverEthernet(int pd, struct pbuf *pb)
donatien	0:8e01dca41002	1980	{
donatien	0:8e01dca41002	1981	struct pppInputHeader *pih;
donatien	0:8e01dca41002	1982	u16_t inProtocol;
donatien	0:8e01dca41002	1983
donatien	0:8e01dca41002	1984	if(pb->len < sizeof(inProtocol)) {
donatien	0:8e01dca41002	1985	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
donatien	0:8e01dca41002	1986	goto drop;
donatien	0:8e01dca41002	1987	}
donatien	0:8e01dca41002	1988
donatien	0:8e01dca41002	1989	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
donatien	0:8e01dca41002	1990
donatien	0:8e01dca41002	1991	/* make room for pppInputHeader - should not fail */
donatien	0:8e01dca41002	1992	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
donatien	0:8e01dca41002	1993	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
donatien	0:8e01dca41002	1994	goto drop;
donatien	0:8e01dca41002	1995	}
donatien	0:8e01dca41002	1996
donatien	0:8e01dca41002	1997	pih = pb->payload;
donatien	0:8e01dca41002	1998
donatien	0:8e01dca41002	1999	pih->unit = pd;
donatien	0:8e01dca41002	2000	pih->proto = inProtocol;
donatien	0:8e01dca41002	2001
donatien	0:8e01dca41002	2002	/* Dispatch the packet thereby consuming it. */
donatien	0:8e01dca41002	2003	pppInput(pb);
donatien	0:8e01dca41002	2004	return;
donatien	0:8e01dca41002	2005
donatien	0:8e01dca41002	2006	drop:
donatien	0:8e01dca41002	2007	LINK_STATS_INC(link.drop);
donatien	0:8e01dca41002	2008	snmp_inc_ifindiscards(&pppControl[pd].netif);
donatien	0:8e01dca41002	2009	pbuf_free(pb);
donatien	0:8e01dca41002	2010	return;
donatien	0:8e01dca41002	2011	}
donatien	0:8e01dca41002	2012	#endif /* PPPOE_SUPPORT */
donatien	0:8e01dca41002	2013
donatien	0:8e01dca41002	2014	#if LWIP_NETIF_STATUS_CALLBACK
donatien	0:8e01dca41002	2015	/** Set the status callback of a PPP's netif
donatien	0:8e01dca41002	2016	*
donatien	0:8e01dca41002	2017	* @param pd The PPP descriptor returned by pppOpen()
donatien	0:8e01dca41002	2018	* @param status_callback pointer to the status callback function
donatien	0:8e01dca41002	2019	*
donatien	0:8e01dca41002	2020	* @see netif_set_status_callback
donatien	0:8e01dca41002	2021	*/
donatien	0:8e01dca41002	2022	void
donatien	0:8e01dca41002	2023	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
donatien	0:8e01dca41002	2024	{
donatien	0:8e01dca41002	2025	netif_set_status_callback(&pppControl[pd].netif, status_callback);
donatien	0:8e01dca41002	2026	}
donatien	0:8e01dca41002	2027	#endif /* LWIP_NETIF_STATUS_CALLBACK */
donatien	0:8e01dca41002	2028
donatien	0:8e01dca41002	2029	#if LWIP_NETIF_LINK_CALLBACK
donatien	0:8e01dca41002	2030	/** Set the link callback of a PPP's netif
donatien	0:8e01dca41002	2031	*
donatien	0:8e01dca41002	2032	* @param pd The PPP descriptor returned by pppOpen()
donatien	0:8e01dca41002	2033	* @param link_callback pointer to the link callback function
donatien	0:8e01dca41002	2034	*
donatien	0:8e01dca41002	2035	* @see netif_set_link_callback
donatien	0:8e01dca41002	2036	*/
donatien	0:8e01dca41002	2037	void
donatien	0:8e01dca41002	2038	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
donatien	0:8e01dca41002	2039	{
donatien	0:8e01dca41002	2040	netif_set_link_callback(&pppControl[pd].netif, link_callback);
donatien	0:8e01dca41002	2041	}
donatien	0:8e01dca41002	2042	#endif /* LWIP_NETIF_LINK_CALLBACK */
donatien	0:8e01dca41002	2043
donatien	0:8e01dca41002	2044	#endif /* PPP_SUPPORT */