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NetStack/lwip/netif/ppp/ppp.c@0:1a61c61d0845, 2012-04-03 (annotated)

Committer:: dcoban
Date:: Tue Apr 03 18:43:13 2012 +0000
Revision:: 0:1a61c61d0845

Who changed what in which revision?

User	Revision	Line number	New contents of line
dcoban	0:1a61c61d0845	1	/*****************************************************************************
dcoban	0:1a61c61d0845	2	* ppp.c - Network Point to Point Protocol program file.
dcoban	0:1a61c61d0845	3	*
dcoban	0:1a61c61d0845	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
dcoban	0:1a61c61d0845	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
dcoban	0:1a61c61d0845	6	*
dcoban	0:1a61c61d0845	7	* The authors hereby grant permission to use, copy, modify, distribute,
dcoban	0:1a61c61d0845	8	* and license this software and its documentation for any purpose, provided
dcoban	0:1a61c61d0845	9	* that existing copyright notices are retained in all copies and that this
dcoban	0:1a61c61d0845	10	* notice and the following disclaimer are included verbatim in any
dcoban	0:1a61c61d0845	11	* distributions. No written agreement, license, or royalty fee is required
dcoban	0:1a61c61d0845	12	* for any of the authorized uses.
dcoban	0:1a61c61d0845	13	*
dcoban	0:1a61c61d0845	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
dcoban	0:1a61c61d0845	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
dcoban	0:1a61c61d0845	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
dcoban	0:1a61c61d0845	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
dcoban	0:1a61c61d0845	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
dcoban	0:1a61c61d0845	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
dcoban	0:1a61c61d0845	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
dcoban	0:1a61c61d0845	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
dcoban	0:1a61c61d0845	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
dcoban	0:1a61c61d0845	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
dcoban	0:1a61c61d0845	24	*
dcoban	0:1a61c61d0845	25	******************************************************************************
dcoban	0:1a61c61d0845	26	* REVISION HISTORY
dcoban	0:1a61c61d0845	27	*
dcoban	0:1a61c61d0845	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
dcoban	0:1a61c61d0845	29	* Ported to lwIP.
dcoban	0:1a61c61d0845	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
dcoban	0:1a61c61d0845	31	* Original.
dcoban	0:1a61c61d0845	32	*****************************************************************************/
dcoban	0:1a61c61d0845	33
dcoban	0:1a61c61d0845	34	/*
dcoban	0:1a61c61d0845	35	* ppp_defs.h - PPP definitions.
dcoban	0:1a61c61d0845	36	*
dcoban	0:1a61c61d0845	37	* if_pppvar.h - private structures and declarations for PPP.
dcoban	0:1a61c61d0845	38	*
dcoban	0:1a61c61d0845	39	* Copyright (c) 1994 The Australian National University.
dcoban	0:1a61c61d0845	40	* All rights reserved.
dcoban	0:1a61c61d0845	41	*
dcoban	0:1a61c61d0845	42	* Permission to use, copy, modify, and distribute this software and its
dcoban	0:1a61c61d0845	43	* documentation is hereby granted, provided that the above copyright
dcoban	0:1a61c61d0845	44	* notice appears in all copies. This software is provided without any
dcoban	0:1a61c61d0845	45	* warranty, express or implied. The Australian National University
dcoban	0:1a61c61d0845	46	* makes no representations about the suitability of this software for
dcoban	0:1a61c61d0845	47	* any purpose.
dcoban	0:1a61c61d0845	48	*
dcoban	0:1a61c61d0845	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
dcoban	0:1a61c61d0845	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
dcoban	0:1a61c61d0845	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
dcoban	0:1a61c61d0845	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
dcoban	0:1a61c61d0845	53	* OF SUCH DAMAGE.
dcoban	0:1a61c61d0845	54	*
dcoban	0:1a61c61d0845	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
dcoban	0:1a61c61d0845	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
dcoban	0:1a61c61d0845	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
dcoban	0:1a61c61d0845	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
dcoban	0:1a61c61d0845	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
dcoban	0:1a61c61d0845	60	* OR MODIFICATIONS.
dcoban	0:1a61c61d0845	61	*/
dcoban	0:1a61c61d0845	62
dcoban	0:1a61c61d0845	63	/*
dcoban	0:1a61c61d0845	64	* if_ppp.h - Point-to-Point Protocol definitions.
dcoban	0:1a61c61d0845	65	*
dcoban	0:1a61c61d0845	66	* Copyright (c) 1989 Carnegie Mellon University.
dcoban	0:1a61c61d0845	67	* All rights reserved.
dcoban	0:1a61c61d0845	68	*
dcoban	0:1a61c61d0845	69	* Redistribution and use in source and binary forms are permitted
dcoban	0:1a61c61d0845	70	* provided that the above copyright notice and this paragraph are
dcoban	0:1a61c61d0845	71	* duplicated in all such forms and that any documentation,
dcoban	0:1a61c61d0845	72	* advertising materials, and other materials related to such
dcoban	0:1a61c61d0845	73	* distribution and use acknowledge that the software was developed
dcoban	0:1a61c61d0845	74	* by Carnegie Mellon University. The name of the
dcoban	0:1a61c61d0845	75	* University may not be used to endorse or promote products derived
dcoban	0:1a61c61d0845	76	* from this software without specific prior written permission.
dcoban	0:1a61c61d0845	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
dcoban	0:1a61c61d0845	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
dcoban	0:1a61c61d0845	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
dcoban	0:1a61c61d0845	80	*/
dcoban	0:1a61c61d0845	81
dcoban	0:1a61c61d0845	82	#include "lwip/opt.h"
dcoban	0:1a61c61d0845	83
dcoban	0:1a61c61d0845	84	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
dcoban	0:1a61c61d0845	85
dcoban	0:1a61c61d0845	86	#include "lwip/ip.h" /* for ip_input() */
dcoban	0:1a61c61d0845	87
dcoban	0:1a61c61d0845	88	#include "ppp.h"
dcoban	0:1a61c61d0845	89	#include "pppdebug.h"
dcoban	0:1a61c61d0845	90
dcoban	0:1a61c61d0845	91	#include "randm.h"
dcoban	0:1a61c61d0845	92	#include "fsm.h"
dcoban	0:1a61c61d0845	93	#if PAP_SUPPORT
dcoban	0:1a61c61d0845	94	#include "pap.h"
dcoban	0:1a61c61d0845	95	#endif /* PAP_SUPPORT */
dcoban	0:1a61c61d0845	96	#if CHAP_SUPPORT
dcoban	0:1a61c61d0845	97	#include "chap.h"
dcoban	0:1a61c61d0845	98	#endif /* CHAP_SUPPORT */
dcoban	0:1a61c61d0845	99	#include "ipcp.h"
dcoban	0:1a61c61d0845	100	#include "lcp.h"
dcoban	0:1a61c61d0845	101	#include "magic.h"
dcoban	0:1a61c61d0845	102	#include "auth.h"
dcoban	0:1a61c61d0845	103	#if VJ_SUPPORT
dcoban	0:1a61c61d0845	104	#include "vj.h"
dcoban	0:1a61c61d0845	105	#endif /* VJ_SUPPORT */
dcoban	0:1a61c61d0845	106	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	107	#include "netif/ppp_oe.h"
dcoban	0:1a61c61d0845	108	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	109
dcoban	0:1a61c61d0845	110	#include "lwip/tcpip.h"
dcoban	0:1a61c61d0845	111	#include "lwip/api.h"
dcoban	0:1a61c61d0845	112	#include "lwip/snmp.h"
dcoban	0:1a61c61d0845	113
dcoban	0:1a61c61d0845	114	#include <string.h>
dcoban	0:1a61c61d0845	115
dcoban	0:1a61c61d0845	116	/*************************/
dcoban	0:1a61c61d0845	117	/* LOCAL DEFINITIONS */
dcoban	0:1a61c61d0845	118	/*************************/
dcoban	0:1a61c61d0845	119
dcoban	0:1a61c61d0845	120	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
dcoban	0:1a61c61d0845	121	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
dcoban	0:1a61c61d0845	122	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
dcoban	0:1a61c61d0845	123	*/
dcoban	0:1a61c61d0845	124	#ifndef PPP_INPROC_MULTITHREADED
dcoban	0:1a61c61d0845	125	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
dcoban	0:1a61c61d0845	126	#endif
dcoban	0:1a61c61d0845	127
dcoban	0:1a61c61d0845	128	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
dcoban	0:1a61c61d0845	129	* Default is 0: call pppos_input() for received raw characters, charcater
dcoban	0:1a61c61d0845	130	* reception is up to the port */
dcoban	0:1a61c61d0845	131	#ifndef PPP_INPROC_OWNTHREAD
dcoban	0:1a61c61d0845	132	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
dcoban	0:1a61c61d0845	133	#endif
dcoban	0:1a61c61d0845	134
dcoban	0:1a61c61d0845	135	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
dcoban	0:1a61c61d0845	136	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
dcoban	0:1a61c61d0845	137	#endif
dcoban	0:1a61c61d0845	138
dcoban	0:1a61c61d0845	139	/*
dcoban	0:1a61c61d0845	140	* The basic PPP frame.
dcoban	0:1a61c61d0845	141	*/
dcoban	0:1a61c61d0845	142	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
dcoban	0:1a61c61d0845	143	#define PPP_CONTROL(p) (((u_char *)(p))[1])
dcoban	0:1a61c61d0845	144	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
dcoban	0:1a61c61d0845	145
dcoban	0:1a61c61d0845	146	/* PPP packet parser states. Current state indicates operation yet to be
dcoban	0:1a61c61d0845	147	* completed. */
dcoban	0:1a61c61d0845	148	typedef enum {
dcoban	0:1a61c61d0845	149	PDIDLE = 0, /* Idle state - waiting. */
dcoban	0:1a61c61d0845	150	PDSTART, /* Process start flag. */
dcoban	0:1a61c61d0845	151	PDADDRESS, /* Process address field. */
dcoban	0:1a61c61d0845	152	PDCONTROL, /* Process control field. */
dcoban	0:1a61c61d0845	153	PDPROTOCOL1, /* Process protocol field 1. */
dcoban	0:1a61c61d0845	154	PDPROTOCOL2, /* Process protocol field 2. */
dcoban	0:1a61c61d0845	155	PDDATA /* Process data byte. */
dcoban	0:1a61c61d0845	156	} PPPDevStates;
dcoban	0:1a61c61d0845	157
dcoban	0:1a61c61d0845	158	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
dcoban	0:1a61c61d0845	159
dcoban	0:1a61c61d0845	160	/************************/
dcoban	0:1a61c61d0845	161	/* LOCAL DATA TYPES */
dcoban	0:1a61c61d0845	162	/************************/
dcoban	0:1a61c61d0845	163
dcoban	0:1a61c61d0845	164	/** RX buffer size: this may be configured smaller! */
dcoban	0:1a61c61d0845	165	#ifndef PPPOS_RX_BUFSIZE
dcoban	0:1a61c61d0845	166	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
dcoban	0:1a61c61d0845	167	#endif
dcoban	0:1a61c61d0845	168
dcoban	0:1a61c61d0845	169	typedef struct PPPControlRx_s {
dcoban	0:1a61c61d0845	170	/** unit number / ppp descriptor */
dcoban	0:1a61c61d0845	171	int pd;
dcoban	0:1a61c61d0845	172	/** the rx file descriptor */
dcoban	0:1a61c61d0845	173	sio_fd_t fd;
dcoban	0:1a61c61d0845	174	/** receive buffer - encoded data is stored here */
dcoban	0:1a61c61d0845	175	u_char rxbuf[PPPOS_RX_BUFSIZE];
dcoban	0:1a61c61d0845	176
dcoban	0:1a61c61d0845	177	/* The input packet. */
dcoban	0:1a61c61d0845	178	struct pbuf inHead, inTail;
dcoban	0:1a61c61d0845	179
dcoban	0:1a61c61d0845	180	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	181	u16_t inProtocol; /* The input protocol code. */
dcoban	0:1a61c61d0845	182	u16_t inFCS; /* Input Frame Check Sequence value. */
dcoban	0:1a61c61d0845	183	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	184	PPPDevStates inState; /* The input process state. */
dcoban	0:1a61c61d0845	185	char inEscaped; /* Escape next character. */
dcoban	0:1a61c61d0845	186	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
dcoban	0:1a61c61d0845	187	} PPPControlRx;
dcoban	0:1a61c61d0845	188
dcoban	0:1a61c61d0845	189	/*
dcoban	0:1a61c61d0845	190	* PPP interface control block.
dcoban	0:1a61c61d0845	191	*/
dcoban	0:1a61c61d0845	192	typedef struct PPPControl_s {
dcoban	0:1a61c61d0845	193	PPPControlRx rx;
dcoban	0:1a61c61d0845	194	char openFlag; /* True when in use. */
dcoban	0:1a61c61d0845	195	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	196	struct netif *ethif;
dcoban	0:1a61c61d0845	197	struct pppoe_softc *pppoe_sc;
dcoban	0:1a61c61d0845	198	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	199	int if_up; /* True when the interface is up. */
dcoban	0:1a61c61d0845	200	int errCode; /* Code indicating why interface is down. */
dcoban	0:1a61c61d0845	201	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	202	sio_fd_t fd; /* File device ID of port. */
dcoban	0:1a61c61d0845	203	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	204	u16_t mtu; /* Peer's mru */
dcoban	0:1a61c61d0845	205	int pcomp; /* Does peer accept protocol compression? */
dcoban	0:1a61c61d0845	206	int accomp; /* Does peer accept addr/ctl compression? */
dcoban	0:1a61c61d0845	207	u_long lastXMit; /* Time of last transmission. */
dcoban	0:1a61c61d0845	208	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
dcoban	0:1a61c61d0845	209	#if PPPOS_SUPPORT && VJ_SUPPORT
dcoban	0:1a61c61d0845	210	int vjEnabled; /* Flag indicating VJ compression enabled. */
dcoban	0:1a61c61d0845	211	struct vjcompress vjComp; /* Van Jacobson compression header. */
dcoban	0:1a61c61d0845	212	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
dcoban	0:1a61c61d0845	213
dcoban	0:1a61c61d0845	214	struct netif netif;
dcoban	0:1a61c61d0845	215
dcoban	0:1a61c61d0845	216	struct ppp_addrs addrs;
dcoban	0:1a61c61d0845	217
dcoban	0:1a61c61d0845	218	void (linkStatusCB)(void ctx, int errCode, void *arg);
dcoban	0:1a61c61d0845	219	void *linkStatusCtx;
dcoban	0:1a61c61d0845	220
dcoban	0:1a61c61d0845	221	} PPPControl;
dcoban	0:1a61c61d0845	222
dcoban	0:1a61c61d0845	223
dcoban	0:1a61c61d0845	224	/*
dcoban	0:1a61c61d0845	225	* Ioctl definitions.
dcoban	0:1a61c61d0845	226	*/
dcoban	0:1a61c61d0845	227
dcoban	0:1a61c61d0845	228	struct npioctl {
dcoban	0:1a61c61d0845	229	int protocol; /* PPP procotol, e.g. PPP_IP */
dcoban	0:1a61c61d0845	230	enum NPmode mode;
dcoban	0:1a61c61d0845	231	};
dcoban	0:1a61c61d0845	232
dcoban	0:1a61c61d0845	233
dcoban	0:1a61c61d0845	234
dcoban	0:1a61c61d0845	235	/***********************************/
dcoban	0:1a61c61d0845	236	/* LOCAL FUNCTION DECLARATIONS */
dcoban	0:1a61c61d0845	237	/***********************************/
dcoban	0:1a61c61d0845	238	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	239	#if PPP_INPROC_OWNTHREAD
dcoban	0:1a61c61d0845	240	static void pppInputThread(void *arg);
dcoban	0:1a61c61d0845	241	#endif /* PPP_INPROC_OWNTHREAD */
dcoban	0:1a61c61d0845	242	static void pppDrop(PPPControlRx *pcrx);
dcoban	0:1a61c61d0845	243	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
dcoban	0:1a61c61d0845	244	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	245
dcoban	0:1a61c61d0845	246
dcoban	0:1a61c61d0845	247	/******************************/
dcoban	0:1a61c61d0845	248	/* PUBLIC DATA STRUCTURES */
dcoban	0:1a61c61d0845	249	/******************************/
dcoban	0:1a61c61d0845	250	u_long subnetMask;
dcoban	0:1a61c61d0845	251
dcoban	0:1a61c61d0845	252	static PPPControl pppControl[NUM_PPP] MEM_POSITION; /* The PPP interface control blocks. */
dcoban	0:1a61c61d0845	253
dcoban	0:1a61c61d0845	254	/*
dcoban	0:1a61c61d0845	255	* PPP Data Link Layer "protocol" table.
dcoban	0:1a61c61d0845	256	* One entry per supported protocol.
dcoban	0:1a61c61d0845	257	* The last entry must be NULL.
dcoban	0:1a61c61d0845	258	*/
dcoban	0:1a61c61d0845	259	struct protent *ppp_protocols[] = {
dcoban	0:1a61c61d0845	260	&lcp_protent,
dcoban	0:1a61c61d0845	261	#if PAP_SUPPORT
dcoban	0:1a61c61d0845	262	&pap_protent,
dcoban	0:1a61c61d0845	263	#endif /* PAP_SUPPORT */
dcoban	0:1a61c61d0845	264	#if CHAP_SUPPORT
dcoban	0:1a61c61d0845	265	&chap_protent,
dcoban	0:1a61c61d0845	266	#endif /* CHAP_SUPPORT */
dcoban	0:1a61c61d0845	267	#if CBCP_SUPPORT
dcoban	0:1a61c61d0845	268	&cbcp_protent,
dcoban	0:1a61c61d0845	269	#endif /* CBCP_SUPPORT */
dcoban	0:1a61c61d0845	270	&ipcp_protent,
dcoban	0:1a61c61d0845	271	#if CCP_SUPPORT
dcoban	0:1a61c61d0845	272	&ccp_protent,
dcoban	0:1a61c61d0845	273	#endif /* CCP_SUPPORT */
dcoban	0:1a61c61d0845	274	NULL
dcoban	0:1a61c61d0845	275	};
dcoban	0:1a61c61d0845	276
dcoban	0:1a61c61d0845	277
dcoban	0:1a61c61d0845	278	/*
dcoban	0:1a61c61d0845	279	* Buffers for outgoing packets. This must be accessed only from the appropriate
dcoban	0:1a61c61d0845	280	* PPP task so that it doesn't need to be protected to avoid collisions.
dcoban	0:1a61c61d0845	281	*/
dcoban	0:1a61c61d0845	282	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] MEM_POSITION;
dcoban	0:1a61c61d0845	283
dcoban	0:1a61c61d0845	284
dcoban	0:1a61c61d0845	285	/*****************************/
dcoban	0:1a61c61d0845	286	/* LOCAL DATA STRUCTURES */
dcoban	0:1a61c61d0845	287	/*****************************/
dcoban	0:1a61c61d0845	288
dcoban	0:1a61c61d0845	289	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	290	/*
dcoban	0:1a61c61d0845	291	* FCS lookup table as calculated by genfcstab.
dcoban	0:1a61c61d0845	292	* @todo: smaller, slower implementation for lower memory footprint?
dcoban	0:1a61c61d0845	293	*/
dcoban	0:1a61c61d0845	294	static const u_short fcstab[256] = {
dcoban	0:1a61c61d0845	295	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
dcoban	0:1a61c61d0845	296	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
dcoban	0:1a61c61d0845	297	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
dcoban	0:1a61c61d0845	298	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
dcoban	0:1a61c61d0845	299	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
dcoban	0:1a61c61d0845	300	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
dcoban	0:1a61c61d0845	301	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
dcoban	0:1a61c61d0845	302	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
dcoban	0:1a61c61d0845	303	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
dcoban	0:1a61c61d0845	304	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
dcoban	0:1a61c61d0845	305	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
dcoban	0:1a61c61d0845	306	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
dcoban	0:1a61c61d0845	307	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
dcoban	0:1a61c61d0845	308	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
dcoban	0:1a61c61d0845	309	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
dcoban	0:1a61c61d0845	310	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
dcoban	0:1a61c61d0845	311	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
dcoban	0:1a61c61d0845	312	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
dcoban	0:1a61c61d0845	313	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
dcoban	0:1a61c61d0845	314	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
dcoban	0:1a61c61d0845	315	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
dcoban	0:1a61c61d0845	316	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
dcoban	0:1a61c61d0845	317	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
dcoban	0:1a61c61d0845	318	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
dcoban	0:1a61c61d0845	319	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
dcoban	0:1a61c61d0845	320	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
dcoban	0:1a61c61d0845	321	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
dcoban	0:1a61c61d0845	322	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
dcoban	0:1a61c61d0845	323	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
dcoban	0:1a61c61d0845	324	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
dcoban	0:1a61c61d0845	325	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
dcoban	0:1a61c61d0845	326	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
dcoban	0:1a61c61d0845	327	};
dcoban	0:1a61c61d0845	328
dcoban	0:1a61c61d0845	329	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
dcoban	0:1a61c61d0845	330	* to select the specific bit for a character. */
dcoban	0:1a61c61d0845	331	static u_char pppACCMMask[] = {
dcoban	0:1a61c61d0845	332	0x01,
dcoban	0:1a61c61d0845	333	0x02,
dcoban	0:1a61c61d0845	334	0x04,
dcoban	0:1a61c61d0845	335	0x08,
dcoban	0:1a61c61d0845	336	0x10,
dcoban	0:1a61c61d0845	337	0x20,
dcoban	0:1a61c61d0845	338	0x40,
dcoban	0:1a61c61d0845	339	0x80
dcoban	0:1a61c61d0845	340	};
dcoban	0:1a61c61d0845	341
dcoban	0:1a61c61d0845	342	/** Wake up the task blocked in reading from serial line (if any) */
dcoban	0:1a61c61d0845	343	static void
dcoban	0:1a61c61d0845	344	pppRecvWakeup(int pd)
dcoban	0:1a61c61d0845	345	{
dcoban	0:1a61c61d0845	346	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
dcoban	0:1a61c61d0845	347	sio_read_abort(pppControl[pd].fd);
dcoban	0:1a61c61d0845	348	}
dcoban	0:1a61c61d0845	349	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	350
dcoban	0:1a61c61d0845	351	void
dcoban	0:1a61c61d0845	352	pppLinkTerminated(int pd)
dcoban	0:1a61c61d0845	353	{
dcoban	0:1a61c61d0845	354	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
dcoban	0:1a61c61d0845	355
dcoban	0:1a61c61d0845	356	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	357	if (pppControl[pd].ethif) {
dcoban	0:1a61c61d0845	358	pppoe_disconnect(pppControl[pd].pppoe_sc);
dcoban	0:1a61c61d0845	359	} else
dcoban	0:1a61c61d0845	360	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	361	{
dcoban	0:1a61c61d0845	362	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	363	PPPControl* pc;
dcoban	0:1a61c61d0845	364	pppRecvWakeup(pd);
dcoban	0:1a61c61d0845	365	pc = &pppControl[pd];
dcoban	0:1a61c61d0845	366	pppDrop(&pc->rx); /* bug fix #17726 */
dcoban	0:1a61c61d0845	367
dcoban	0:1a61c61d0845	368	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
dcoban	0:1a61c61d0845	369	if (pc->linkStatusCB) {
dcoban	0:1a61c61d0845	370	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
dcoban	0:1a61c61d0845	371	}
dcoban	0:1a61c61d0845	372
dcoban	0:1a61c61d0845	373	pc->openFlag = 0;/**/
dcoban	0:1a61c61d0845	374	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	375	}
dcoban	0:1a61c61d0845	376	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
dcoban	0:1a61c61d0845	377	}
dcoban	0:1a61c61d0845	378
dcoban	0:1a61c61d0845	379	void
dcoban	0:1a61c61d0845	380	pppLinkDown(int pd)
dcoban	0:1a61c61d0845	381	{
dcoban	0:1a61c61d0845	382	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
dcoban	0:1a61c61d0845	383
dcoban	0:1a61c61d0845	384	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	385	if (pppControl[pd].ethif) {
dcoban	0:1a61c61d0845	386	pppoe_disconnect(pppControl[pd].pppoe_sc);
dcoban	0:1a61c61d0845	387	} else
dcoban	0:1a61c61d0845	388	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	389	{
dcoban	0:1a61c61d0845	390	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	391	pppRecvWakeup(pd);
dcoban	0:1a61c61d0845	392	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	393	}
dcoban	0:1a61c61d0845	394	}
dcoban	0:1a61c61d0845	395
dcoban	0:1a61c61d0845	396	/** Initiate LCP open request */
dcoban	0:1a61c61d0845	397	static void
dcoban	0:1a61c61d0845	398	pppStart(int pd)
dcoban	0:1a61c61d0845	399	{
dcoban	0:1a61c61d0845	400	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
dcoban	0:1a61c61d0845	401	lcp_lowerup(pd);
dcoban	0:1a61c61d0845	402	lcp_open(pd); /* Start protocol */
dcoban	0:1a61c61d0845	403	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
dcoban	0:1a61c61d0845	404	}
dcoban	0:1a61c61d0845	405
dcoban	0:1a61c61d0845	406	/** LCP close request */
dcoban	0:1a61c61d0845	407	static void
dcoban	0:1a61c61d0845	408	pppStop(int pd)
dcoban	0:1a61c61d0845	409	{
dcoban	0:1a61c61d0845	410	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
dcoban	0:1a61c61d0845	411	lcp_close(pd, "User request");
dcoban	0:1a61c61d0845	412	}
dcoban	0:1a61c61d0845	413
dcoban	0:1a61c61d0845	414	/** Called when carrier/link is lost */
dcoban	0:1a61c61d0845	415	static void
dcoban	0:1a61c61d0845	416	pppHup(int pd)
dcoban	0:1a61c61d0845	417	{
dcoban	0:1a61c61d0845	418	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
dcoban	0:1a61c61d0845	419	lcp_lowerdown(pd);
dcoban	0:1a61c61d0845	420	link_terminated(pd);
dcoban	0:1a61c61d0845	421	}
dcoban	0:1a61c61d0845	422
dcoban	0:1a61c61d0845	423	/***********************************/
dcoban	0:1a61c61d0845	424	/* PUBLIC FUNCTION DEFINITIONS */
dcoban	0:1a61c61d0845	425	/***********************************/
dcoban	0:1a61c61d0845	426	/* Initialize the PPP subsystem. */
dcoban	0:1a61c61d0845	427
dcoban	0:1a61c61d0845	428	struct ppp_settings ppp_settings;
dcoban	0:1a61c61d0845	429
dcoban	0:1a61c61d0845	430	void
dcoban	0:1a61c61d0845	431	pppInit(void)
dcoban	0:1a61c61d0845	432	{
dcoban	0:1a61c61d0845	433	struct protent *protp;
dcoban	0:1a61c61d0845	434	int i, j;
dcoban	0:1a61c61d0845	435
dcoban	0:1a61c61d0845	436	memset(&ppp_settings, 0, sizeof(ppp_settings));
dcoban	0:1a61c61d0845	437	ppp_settings.usepeerdns = 1;
dcoban	0:1a61c61d0845	438	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
dcoban	0:1a61c61d0845	439
dcoban	0:1a61c61d0845	440	magicInit();
dcoban	0:1a61c61d0845	441
dcoban	0:1a61c61d0845	442	subnetMask = PP_HTONL(0xffffff00);
dcoban	0:1a61c61d0845	443
dcoban	0:1a61c61d0845	444	for (i = 0; i < NUM_PPP; i++) {
dcoban	0:1a61c61d0845	445	/* Initialize each protocol to the standard option set. */
dcoban	0:1a61c61d0845	446	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
dcoban	0:1a61c61d0845	447	(*protp->init)(i);
dcoban	0:1a61c61d0845	448	}
dcoban	0:1a61c61d0845	449	}
dcoban	0:1a61c61d0845	450	}
dcoban	0:1a61c61d0845	451
dcoban	0:1a61c61d0845	452	void
dcoban	0:1a61c61d0845	453	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
dcoban	0:1a61c61d0845	454	{
dcoban	0:1a61c61d0845	455	switch(authType) {
dcoban	0:1a61c61d0845	456	case PPPAUTHTYPE_NONE:
dcoban	0:1a61c61d0845	457	default:
dcoban	0:1a61c61d0845	458	#ifdef LWIP_PPP_STRICT_PAP_REJECT
dcoban	0:1a61c61d0845	459	ppp_settings.refuse_pap = 1;
dcoban	0:1a61c61d0845	460	#else /* LWIP_PPP_STRICT_PAP_REJECT */
dcoban	0:1a61c61d0845	461	/* some providers request pap and accept an empty login/pw */
dcoban	0:1a61c61d0845	462	ppp_settings.refuse_pap = 0;
dcoban	0:1a61c61d0845	463	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
dcoban	0:1a61c61d0845	464	ppp_settings.refuse_chap = 1;
dcoban	0:1a61c61d0845	465	break;
dcoban	0:1a61c61d0845	466
dcoban	0:1a61c61d0845	467	case PPPAUTHTYPE_ANY:
dcoban	0:1a61c61d0845	468	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
dcoban	0:1a61c61d0845	469	* RFC 1994 says:
dcoban	0:1a61c61d0845	470	*
dcoban	0:1a61c61d0845	471	* In practice, within or associated with each PPP server, there is a
dcoban	0:1a61c61d0845	472	* database which associates "user" names with authentication
dcoban	0:1a61c61d0845	473	* information ("secrets"). It is not anticipated that a particular
dcoban	0:1a61c61d0845	474	* named user would be authenticated by multiple methods. This would
dcoban	0:1a61c61d0845	475	* make the user vulnerable to attacks which negotiate the least secure
dcoban	0:1a61c61d0845	476	* method from among a set (such as PAP rather than CHAP). If the same
dcoban	0:1a61c61d0845	477	* secret was used, PAP would reveal the secret to be used later with
dcoban	0:1a61c61d0845	478	* CHAP.
dcoban	0:1a61c61d0845	479	*
dcoban	0:1a61c61d0845	480	* Instead, for each user name there should be an indication of exactly
dcoban	0:1a61c61d0845	481	* one method used to authenticate that user name. If a user needs to
dcoban	0:1a61c61d0845	482	* make use of different authentication methods under different
dcoban	0:1a61c61d0845	483	* circumstances, then distinct user names SHOULD be employed, each of
dcoban	0:1a61c61d0845	484	* which identifies exactly one authentication method.
dcoban	0:1a61c61d0845	485	*
dcoban	0:1a61c61d0845	486	*/
dcoban	0:1a61c61d0845	487	ppp_settings.refuse_pap = 0;
dcoban	0:1a61c61d0845	488	ppp_settings.refuse_chap = 0;
dcoban	0:1a61c61d0845	489	break;
dcoban	0:1a61c61d0845	490
dcoban	0:1a61c61d0845	491	case PPPAUTHTYPE_PAP:
dcoban	0:1a61c61d0845	492	ppp_settings.refuse_pap = 0;
dcoban	0:1a61c61d0845	493	ppp_settings.refuse_chap = 1;
dcoban	0:1a61c61d0845	494	break;
dcoban	0:1a61c61d0845	495
dcoban	0:1a61c61d0845	496	case PPPAUTHTYPE_CHAP:
dcoban	0:1a61c61d0845	497	ppp_settings.refuse_pap = 1;
dcoban	0:1a61c61d0845	498	ppp_settings.refuse_chap = 0;
dcoban	0:1a61c61d0845	499	break;
dcoban	0:1a61c61d0845	500	}
dcoban	0:1a61c61d0845	501
dcoban	0:1a61c61d0845	502	if(user) {
dcoban	0:1a61c61d0845	503	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
dcoban	0:1a61c61d0845	504	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
dcoban	0:1a61c61d0845	505	} else {
dcoban	0:1a61c61d0845	506	ppp_settings.user[0] = '\0';
dcoban	0:1a61c61d0845	507	}
dcoban	0:1a61c61d0845	508
dcoban	0:1a61c61d0845	509	if(passwd) {
dcoban	0:1a61c61d0845	510	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
dcoban	0:1a61c61d0845	511	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
dcoban	0:1a61c61d0845	512	} else {
dcoban	0:1a61c61d0845	513	ppp_settings.passwd[0] = '\0';
dcoban	0:1a61c61d0845	514	}
dcoban	0:1a61c61d0845	515	}
dcoban	0:1a61c61d0845	516
dcoban	0:1a61c61d0845	517	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	518	/** Open a new PPP connection using the given I/O device.
dcoban	0:1a61c61d0845	519	* This initializes the PPP control block but does not
dcoban	0:1a61c61d0845	520	* attempt to negotiate the LCP session. If this port
dcoban	0:1a61c61d0845	521	* connects to a modem, the modem connection must be
dcoban	0:1a61c61d0845	522	* established before calling this.
dcoban	0:1a61c61d0845	523	* Return a new PPP connection descriptor on success or
dcoban	0:1a61c61d0845	524	* an error code (negative) on failure.
dcoban	0:1a61c61d0845	525	*
dcoban	0:1a61c61d0845	526	* pppOpen() is directly defined to this function.
dcoban	0:1a61c61d0845	527	*/
dcoban	0:1a61c61d0845	528	int
dcoban	0:1a61c61d0845	529	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
dcoban	0:1a61c61d0845	530	{
dcoban	0:1a61c61d0845	531	PPPControl *pc;
dcoban	0:1a61c61d0845	532	int pd;
dcoban	0:1a61c61d0845	533
dcoban	0:1a61c61d0845	534	if (linkStatusCB == NULL) {
dcoban	0:1a61c61d0845	535	/* PPP is single-threaded: without a callback,
dcoban	0:1a61c61d0845	536	* there is no way to know when the link is up. */
dcoban	0:1a61c61d0845	537	return PPPERR_PARAM;
dcoban	0:1a61c61d0845	538	}
dcoban	0:1a61c61d0845	539
dcoban	0:1a61c61d0845	540	/* Find a free PPP session descriptor. */
dcoban	0:1a61c61d0845	541	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
dcoban	0:1a61c61d0845	542
dcoban	0:1a61c61d0845	543	if (pd >= NUM_PPP) {
dcoban	0:1a61c61d0845	544	pd = PPPERR_OPEN;
dcoban	0:1a61c61d0845	545	} else {
dcoban	0:1a61c61d0845	546	pc = &pppControl[pd];
dcoban	0:1a61c61d0845	547	/* @todo: is this correct or do I overwrite something? */
dcoban	0:1a61c61d0845	548	memset(pc, 0, sizeof(PPPControl));
dcoban	0:1a61c61d0845	549	pc->rx.pd = pd;
dcoban	0:1a61c61d0845	550	pc->rx.fd = fd;
dcoban	0:1a61c61d0845	551
dcoban	0:1a61c61d0845	552	pc->openFlag = 1;
dcoban	0:1a61c61d0845	553	pc->fd = fd;
dcoban	0:1a61c61d0845	554
dcoban	0:1a61c61d0845	555	#if VJ_SUPPORT
dcoban	0:1a61c61d0845	556	vj_compress_init(&pc->vjComp);
dcoban	0:1a61c61d0845	557	#endif /* VJ_SUPPORT */
dcoban	0:1a61c61d0845	558
dcoban	0:1a61c61d0845	559	/*
dcoban	0:1a61c61d0845	560	* Default the in and out accm so that escape and flag characters
dcoban	0:1a61c61d0845	561	* are always escaped.
dcoban	0:1a61c61d0845	562	*/
dcoban	0:1a61c61d0845	563	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
dcoban	0:1a61c61d0845	564	pc->outACCM[15] = 0x60;
dcoban	0:1a61c61d0845	565
dcoban	0:1a61c61d0845	566	pc->linkStatusCB = linkStatusCB;
dcoban	0:1a61c61d0845	567	pc->linkStatusCtx = linkStatusCtx;
dcoban	0:1a61c61d0845	568
dcoban	0:1a61c61d0845	569	/*
dcoban	0:1a61c61d0845	570	* Start the connection and handle incoming events (packet or timeout).
dcoban	0:1a61c61d0845	571	*/
dcoban	0:1a61c61d0845	572	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
dcoban	0:1a61c61d0845	573	pppStart(pd);
dcoban	0:1a61c61d0845	574	#if PPP_INPROC_OWNTHREAD
dcoban	0:1a61c61d0845	575	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
dcoban	0:1a61c61d0845	576	#endif
dcoban	0:1a61c61d0845	577	}
dcoban	0:1a61c61d0845	578
dcoban	0:1a61c61d0845	579	return pd;
dcoban	0:1a61c61d0845	580	}
dcoban	0:1a61c61d0845	581	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	582
dcoban	0:1a61c61d0845	583	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	584	static void pppOverEthernetLinkStatusCB(int pd, int up);
dcoban	0:1a61c61d0845	585
dcoban	0:1a61c61d0845	586	void
dcoban	0:1a61c61d0845	587	pppOverEthernetClose(int pd)
dcoban	0:1a61c61d0845	588	{
dcoban	0:1a61c61d0845	589	PPPControl* pc = &pppControl[pd];
dcoban	0:1a61c61d0845	590
dcoban	0:1a61c61d0845	591	/* TJL There's no lcp_deinit */
dcoban	0:1a61c61d0845	592	lcp_close(pd, NULL);
dcoban	0:1a61c61d0845	593
dcoban	0:1a61c61d0845	594	pppoe_destroy(&pc->netif);
dcoban	0:1a61c61d0845	595	}
dcoban	0:1a61c61d0845	596
dcoban	0:1a61c61d0845	597	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
dcoban	0:1a61c61d0845	598	{
dcoban	0:1a61c61d0845	599	PPPControl *pc;
dcoban	0:1a61c61d0845	600	int pd;
dcoban	0:1a61c61d0845	601
dcoban	0:1a61c61d0845	602	LWIP_UNUSED_ARG(service_name);
dcoban	0:1a61c61d0845	603	LWIP_UNUSED_ARG(concentrator_name);
dcoban	0:1a61c61d0845	604
dcoban	0:1a61c61d0845	605	if (linkStatusCB == NULL) {
dcoban	0:1a61c61d0845	606	/* PPP is single-threaded: without a callback,
dcoban	0:1a61c61d0845	607	* there is no way to know when the link is up. */
dcoban	0:1a61c61d0845	608	return PPPERR_PARAM;
dcoban	0:1a61c61d0845	609	}
dcoban	0:1a61c61d0845	610
dcoban	0:1a61c61d0845	611	/* Find a free PPP session descriptor. Critical region? */
dcoban	0:1a61c61d0845	612	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
dcoban	0:1a61c61d0845	613	if (pd >= NUM_PPP) {
dcoban	0:1a61c61d0845	614	pd = PPPERR_OPEN;
dcoban	0:1a61c61d0845	615	} else {
dcoban	0:1a61c61d0845	616	pc = &pppControl[pd];
dcoban	0:1a61c61d0845	617	memset(pc, 0, sizeof(PPPControl));
dcoban	0:1a61c61d0845	618	pc->openFlag = 1;
dcoban	0:1a61c61d0845	619	pc->ethif = ethif;
dcoban	0:1a61c61d0845	620
dcoban	0:1a61c61d0845	621	pc->linkStatusCB = linkStatusCB;
dcoban	0:1a61c61d0845	622	pc->linkStatusCtx = linkStatusCtx;
dcoban	0:1a61c61d0845	623
dcoban	0:1a61c61d0845	624	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
dcoban	0:1a61c61d0845	625	lcp_wantoptions[pd].neg_asyncmap = 0;
dcoban	0:1a61c61d0845	626	lcp_wantoptions[pd].neg_pcompression = 0;
dcoban	0:1a61c61d0845	627	lcp_wantoptions[pd].neg_accompression = 0;
dcoban	0:1a61c61d0845	628
dcoban	0:1a61c61d0845	629	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
dcoban	0:1a61c61d0845	630	lcp_allowoptions[pd].neg_asyncmap = 0;
dcoban	0:1a61c61d0845	631	lcp_allowoptions[pd].neg_pcompression = 0;
dcoban	0:1a61c61d0845	632	lcp_allowoptions[pd].neg_accompression = 0;
dcoban	0:1a61c61d0845	633
dcoban	0:1a61c61d0845	634	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
dcoban	0:1a61c61d0845	635	pc->openFlag = 0;
dcoban	0:1a61c61d0845	636	return PPPERR_OPEN;
dcoban	0:1a61c61d0845	637	}
dcoban	0:1a61c61d0845	638
dcoban	0:1a61c61d0845	639	pppoe_connect(pc->pppoe_sc);
dcoban	0:1a61c61d0845	640	}
dcoban	0:1a61c61d0845	641
dcoban	0:1a61c61d0845	642	return pd;
dcoban	0:1a61c61d0845	643	}
dcoban	0:1a61c61d0845	644	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	645
dcoban	0:1a61c61d0845	646
dcoban	0:1a61c61d0845	647	/* Close a PPP connection and release the descriptor.
dcoban	0:1a61c61d0845	648	* Any outstanding packets in the queues are dropped.
dcoban	0:1a61c61d0845	649	* Return 0 on success, an error code on failure. */
dcoban	0:1a61c61d0845	650	int
dcoban	0:1a61c61d0845	651	pppClose(int pd)
dcoban	0:1a61c61d0845	652	{
dcoban	0:1a61c61d0845	653	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	654	int st = 0;
dcoban	0:1a61c61d0845	655
dcoban	0:1a61c61d0845	656	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
dcoban	0:1a61c61d0845	657
dcoban	0:1a61c61d0845	658	/* Disconnect */
dcoban	0:1a61c61d0845	659	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	660	if(pc->ethif) {
dcoban	0:1a61c61d0845	661	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
dcoban	0:1a61c61d0845	662	pc->errCode = PPPERR_USER;
dcoban	0:1a61c61d0845	663	/* This will leave us at PHASE_DEAD. */
dcoban	0:1a61c61d0845	664	pppStop(pd);
dcoban	0:1a61c61d0845	665	} else
dcoban	0:1a61c61d0845	666	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	667	{
dcoban	0:1a61c61d0845	668	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	669	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
dcoban	0:1a61c61d0845	670	pc->errCode = PPPERR_USER;
dcoban	0:1a61c61d0845	671	/* This will leave us at PHASE_DEAD. */
dcoban	0:1a61c61d0845	672	pppStop(pd);
dcoban	0:1a61c61d0845	673	pppRecvWakeup(pd);
dcoban	0:1a61c61d0845	674	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	675	}
dcoban	0:1a61c61d0845	676
dcoban	0:1a61c61d0845	677	return st;
dcoban	0:1a61c61d0845	678	}
dcoban	0:1a61c61d0845	679
dcoban	0:1a61c61d0845	680	/* This function is called when carrier is lost on the PPP channel. */
dcoban	0:1a61c61d0845	681	void
dcoban	0:1a61c61d0845	682	pppSigHUP(int pd)
dcoban	0:1a61c61d0845	683	{
dcoban	0:1a61c61d0845	684	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	685	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	686	if(pc->ethif) {
dcoban	0:1a61c61d0845	687	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
dcoban	0:1a61c61d0845	688	pppHup(pd);
dcoban	0:1a61c61d0845	689	} else
dcoban	0:1a61c61d0845	690	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	691	{
dcoban	0:1a61c61d0845	692	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	693	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
dcoban	0:1a61c61d0845	694	pppHup(pd);
dcoban	0:1a61c61d0845	695	pppRecvWakeup(pd);
dcoban	0:1a61c61d0845	696	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	697	}
dcoban	0:1a61c61d0845	698	}
dcoban	0:1a61c61d0845	699
dcoban	0:1a61c61d0845	700	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	701	static void
dcoban	0:1a61c61d0845	702	nPut(PPPControl pc, struct pbuf nb)
dcoban	0:1a61c61d0845	703	{
dcoban	0:1a61c61d0845	704	struct pbuf *b;
dcoban	0:1a61c61d0845	705	int c;
dcoban	0:1a61c61d0845	706
dcoban	0:1a61c61d0845	707	for(b = nb; b != NULL; b = b->next) {
dcoban	0:1a61c61d0845	708	if((c = sio_write(pc->fd, (u8_t *)b->payload, b->len)) != b->len) {
dcoban	0:1a61c61d0845	709	PPPDEBUG(LOG_WARNING,
dcoban	0:1a61c61d0845	710	("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));
dcoban	0:1a61c61d0845	711	LINK_STATS_INC(link.err);
dcoban	0:1a61c61d0845	712	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
dcoban	0:1a61c61d0845	713	snmp_inc_ifoutdiscards(&pc->netif);
dcoban	0:1a61c61d0845	714	pbuf_free(nb);
dcoban	0:1a61c61d0845	715	return;
dcoban	0:1a61c61d0845	716	}
dcoban	0:1a61c61d0845	717	}
dcoban	0:1a61c61d0845	718
dcoban	0:1a61c61d0845	719	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
dcoban	0:1a61c61d0845	720	snmp_inc_ifoutucastpkts(&pc->netif);
dcoban	0:1a61c61d0845	721	pbuf_free(nb);
dcoban	0:1a61c61d0845	722	LINK_STATS_INC(link.xmit);
dcoban	0:1a61c61d0845	723	}
dcoban	0:1a61c61d0845	724
dcoban	0:1a61c61d0845	725	/*
dcoban	0:1a61c61d0845	726	* pppAppend - append given character to end of given pbuf. If outACCM
dcoban	0:1a61c61d0845	727	* is not NULL and the character needs to be escaped, do so.
dcoban	0:1a61c61d0845	728	* If pbuf is full, append another.
dcoban	0:1a61c61d0845	729	* Return the current pbuf.
dcoban	0:1a61c61d0845	730	*/
dcoban	0:1a61c61d0845	731	static struct pbuf *
dcoban	0:1a61c61d0845	732	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
dcoban	0:1a61c61d0845	733	{
dcoban	0:1a61c61d0845	734	struct pbuf *tb = nb;
dcoban	0:1a61c61d0845	735
dcoban	0:1a61c61d0845	736	/* Make sure there is room for the character and an escape code.
dcoban	0:1a61c61d0845	737	* Sure we don't quite fill the buffer if the character doesn't
dcoban	0:1a61c61d0845	738	* get escaped but is one character worth complicating this? */
dcoban	0:1a61c61d0845	739	/* Note: We assume no packet header. */
dcoban	0:1a61c61d0845	740	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
dcoban	0:1a61c61d0845	741	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
dcoban	0:1a61c61d0845	742	if (tb) {
dcoban	0:1a61c61d0845	743	nb->next = tb;
dcoban	0:1a61c61d0845	744	} else {
dcoban	0:1a61c61d0845	745	LINK_STATS_INC(link.memerr);
dcoban	0:1a61c61d0845	746	}
dcoban	0:1a61c61d0845	747	nb = tb;
dcoban	0:1a61c61d0845	748	}
dcoban	0:1a61c61d0845	749
dcoban	0:1a61c61d0845	750	if (nb) {
dcoban	0:1a61c61d0845	751	if (outACCM && ESCAPE_P(*outACCM, c)) {
dcoban	0:1a61c61d0845	752	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
dcoban	0:1a61c61d0845	753	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
dcoban	0:1a61c61d0845	754	} else {
dcoban	0:1a61c61d0845	755	((u_char)nb->payload + nb->len++) = c;
dcoban	0:1a61c61d0845	756	}
dcoban	0:1a61c61d0845	757	}
dcoban	0:1a61c61d0845	758
dcoban	0:1a61c61d0845	759	return tb;
dcoban	0:1a61c61d0845	760	}
dcoban	0:1a61c61d0845	761	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	762
dcoban	0:1a61c61d0845	763	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	764	static err_t
dcoban	0:1a61c61d0845	765	pppifOutputOverEthernet(int pd, struct pbuf *p)
dcoban	0:1a61c61d0845	766	{
dcoban	0:1a61c61d0845	767	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	768	struct pbuf *pb;
dcoban	0:1a61c61d0845	769	u_short protocol = PPP_IP;
dcoban	0:1a61c61d0845	770	int i=0;
dcoban	0:1a61c61d0845	771	u16_t tot_len;
dcoban	0:1a61c61d0845	772
dcoban	0:1a61c61d0845	773	/* @todo: try to use pbuf_header() here! */
dcoban	0:1a61c61d0845	774	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
dcoban	0:1a61c61d0845	775	if(!pb) {
dcoban	0:1a61c61d0845	776	LINK_STATS_INC(link.memerr);
dcoban	0:1a61c61d0845	777	LINK_STATS_INC(link.proterr);
dcoban	0:1a61c61d0845	778	snmp_inc_ifoutdiscards(&pc->netif);
dcoban	0:1a61c61d0845	779	return ERR_MEM;
dcoban	0:1a61c61d0845	780	}
dcoban	0:1a61c61d0845	781
dcoban	0:1a61c61d0845	782	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
dcoban	0:1a61c61d0845	783
dcoban	0:1a61c61d0845	784	pc->lastXMit = sys_jiffies();
dcoban	0:1a61c61d0845	785
dcoban	0:1a61c61d0845	786	if (!pc->pcomp \|\| protocol > 0xFF) {
dcoban	0:1a61c61d0845	787	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
dcoban	0:1a61c61d0845	788	}
dcoban	0:1a61c61d0845	789	((u_char)pb->payload + i) = protocol & 0xFF;
dcoban	0:1a61c61d0845	790
dcoban	0:1a61c61d0845	791	pbuf_chain(pb, p);
dcoban	0:1a61c61d0845	792	tot_len = pb->tot_len;
dcoban	0:1a61c61d0845	793
dcoban	0:1a61c61d0845	794	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
dcoban	0:1a61c61d0845	795	LINK_STATS_INC(link.err);
dcoban	0:1a61c61d0845	796	snmp_inc_ifoutdiscards(&pc->netif);
dcoban	0:1a61c61d0845	797	return PPPERR_DEVICE;
dcoban	0:1a61c61d0845	798	}
dcoban	0:1a61c61d0845	799
dcoban	0:1a61c61d0845	800	snmp_add_ifoutoctets(&pc->netif, tot_len);
dcoban	0:1a61c61d0845	801	snmp_inc_ifoutucastpkts(&pc->netif);
dcoban	0:1a61c61d0845	802	LINK_STATS_INC(link.xmit);
dcoban	0:1a61c61d0845	803	return ERR_OK;
dcoban	0:1a61c61d0845	804	}
dcoban	0:1a61c61d0845	805	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	806
dcoban	0:1a61c61d0845	807	/* Send a packet on the given connection. */
dcoban	0:1a61c61d0845	808	static err_t
dcoban	0:1a61c61d0845	809	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
dcoban	0:1a61c61d0845	810	{
dcoban	0:1a61c61d0845	811	int pd = (int)(size_t)netif->state;
dcoban	0:1a61c61d0845	812	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	813	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	814	u_short protocol = PPP_IP;
dcoban	0:1a61c61d0845	815	u_int fcsOut = PPP_INITFCS;
dcoban	0:1a61c61d0845	816	struct pbuf headMB = NULL, tailMB = NULL, *p;
dcoban	0:1a61c61d0845	817	u_char c;
dcoban	0:1a61c61d0845	818	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	819
dcoban	0:1a61c61d0845	820	LWIP_UNUSED_ARG(ipaddr);
dcoban	0:1a61c61d0845	821
dcoban	0:1a61c61d0845	822	/* Validate parameters. */
dcoban	0:1a61c61d0845	823	/* We let any protocol value go through - it can't hurt us
dcoban	0:1a61c61d0845	824	* and the peer will just drop it if it's not accepting it. */
dcoban	0:1a61c61d0845	825	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
dcoban	0:1a61c61d0845	826	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
dcoban	0:1a61c61d0845	827	pd, PPP_IP, pb));
dcoban	0:1a61c61d0845	828	LINK_STATS_INC(link.opterr);
dcoban	0:1a61c61d0845	829	LINK_STATS_INC(link.drop);
dcoban	0:1a61c61d0845	830	snmp_inc_ifoutdiscards(netif);
dcoban	0:1a61c61d0845	831	return ERR_ARG;
dcoban	0:1a61c61d0845	832	}
dcoban	0:1a61c61d0845	833
dcoban	0:1a61c61d0845	834	/* Check that the link is up. */
dcoban	0:1a61c61d0845	835	if (lcp_phase[pd] == PHASE_DEAD) {
dcoban	0:1a61c61d0845	836	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
dcoban	0:1a61c61d0845	837	LINK_STATS_INC(link.rterr);
dcoban	0:1a61c61d0845	838	LINK_STATS_INC(link.drop);
dcoban	0:1a61c61d0845	839	snmp_inc_ifoutdiscards(netif);
dcoban	0:1a61c61d0845	840	return ERR_RTE;
dcoban	0:1a61c61d0845	841	}
dcoban	0:1a61c61d0845	842
dcoban	0:1a61c61d0845	843	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	844	if(pc->ethif) {
dcoban	0:1a61c61d0845	845	return pppifOutputOverEthernet(pd, pb);
dcoban	0:1a61c61d0845	846	}
dcoban	0:1a61c61d0845	847	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	848
dcoban	0:1a61c61d0845	849	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	850	/* Grab an output buffer. */
dcoban	0:1a61c61d0845	851	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
dcoban	0:1a61c61d0845	852	if (headMB == NULL) {
dcoban	0:1a61c61d0845	853	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
dcoban	0:1a61c61d0845	854	LINK_STATS_INC(link.memerr);
dcoban	0:1a61c61d0845	855	LINK_STATS_INC(link.drop);
dcoban	0:1a61c61d0845	856	snmp_inc_ifoutdiscards(netif);
dcoban	0:1a61c61d0845	857	return ERR_MEM;
dcoban	0:1a61c61d0845	858	}
dcoban	0:1a61c61d0845	859
dcoban	0:1a61c61d0845	860	#if VJ_SUPPORT
dcoban	0:1a61c61d0845	861	/*
dcoban	0:1a61c61d0845	862	* Attempt Van Jacobson header compression if VJ is configured and
dcoban	0:1a61c61d0845	863	* this is an IP packet.
dcoban	0:1a61c61d0845	864	*/
dcoban	0:1a61c61d0845	865	if (protocol == PPP_IP && pc->vjEnabled) {
dcoban	0:1a61c61d0845	866	switch (vj_compress_tcp(&pc->vjComp, pb)) {
dcoban	0:1a61c61d0845	867	case TYPE_IP:
dcoban	0:1a61c61d0845	868	/* No change...
dcoban	0:1a61c61d0845	869	protocol = PPP_IP_PROTOCOL; */
dcoban	0:1a61c61d0845	870	break;
dcoban	0:1a61c61d0845	871	case TYPE_COMPRESSED_TCP:
dcoban	0:1a61c61d0845	872	protocol = PPP_VJC_COMP;
dcoban	0:1a61c61d0845	873	break;
dcoban	0:1a61c61d0845	874	case TYPE_UNCOMPRESSED_TCP:
dcoban	0:1a61c61d0845	875	protocol = PPP_VJC_UNCOMP;
dcoban	0:1a61c61d0845	876	break;
dcoban	0:1a61c61d0845	877	default:
dcoban	0:1a61c61d0845	878	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
dcoban	0:1a61c61d0845	879	LINK_STATS_INC(link.proterr);
dcoban	0:1a61c61d0845	880	LINK_STATS_INC(link.drop);
dcoban	0:1a61c61d0845	881	snmp_inc_ifoutdiscards(netif);
dcoban	0:1a61c61d0845	882	pbuf_free(headMB);
dcoban	0:1a61c61d0845	883	return ERR_VAL;
dcoban	0:1a61c61d0845	884	}
dcoban	0:1a61c61d0845	885	}
dcoban	0:1a61c61d0845	886	#endif /* VJ_SUPPORT */
dcoban	0:1a61c61d0845	887
dcoban	0:1a61c61d0845	888	tailMB = headMB;
dcoban	0:1a61c61d0845	889
dcoban	0:1a61c61d0845	890	/* Build the PPP header. */
dcoban	0:1a61c61d0845	891	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
dcoban	0:1a61c61d0845	892	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
dcoban	0:1a61c61d0845	893	}
dcoban	0:1a61c61d0845	894
dcoban	0:1a61c61d0845	895	pc->lastXMit = sys_jiffies();
dcoban	0:1a61c61d0845	896	if (!pc->accomp) {
dcoban	0:1a61c61d0845	897	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
dcoban	0:1a61c61d0845	898	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
dcoban	0:1a61c61d0845	899	fcsOut = PPP_FCS(fcsOut, PPP_UI);
dcoban	0:1a61c61d0845	900	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
dcoban	0:1a61c61d0845	901	}
dcoban	0:1a61c61d0845	902	if (!pc->pcomp \|\| protocol > 0xFF) {
dcoban	0:1a61c61d0845	903	c = (protocol >> 8) & 0xFF;
dcoban	0:1a61c61d0845	904	fcsOut = PPP_FCS(fcsOut, c);
dcoban	0:1a61c61d0845	905	tailMB = pppAppend(c, tailMB, &pc->outACCM);
dcoban	0:1a61c61d0845	906	}
dcoban	0:1a61c61d0845	907	c = protocol & 0xFF;
dcoban	0:1a61c61d0845	908	fcsOut = PPP_FCS(fcsOut, c);
dcoban	0:1a61c61d0845	909	tailMB = pppAppend(c, tailMB, &pc->outACCM);
dcoban	0:1a61c61d0845	910
dcoban	0:1a61c61d0845	911	/* Load packet. */
dcoban	0:1a61c61d0845	912	for(p = pb; p; p = p->next) {
dcoban	0:1a61c61d0845	913	int n;
dcoban	0:1a61c61d0845	914	u_char *sPtr;
dcoban	0:1a61c61d0845	915
dcoban	0:1a61c61d0845	916	sPtr = (u_char*)p->payload;
dcoban	0:1a61c61d0845	917	n = p->len;
dcoban	0:1a61c61d0845	918	while (n-- > 0) {
dcoban	0:1a61c61d0845	919	c = *sPtr++;
dcoban	0:1a61c61d0845	920
dcoban	0:1a61c61d0845	921	/* Update FCS before checking for special characters. */
dcoban	0:1a61c61d0845	922	fcsOut = PPP_FCS(fcsOut, c);
dcoban	0:1a61c61d0845	923
dcoban	0:1a61c61d0845	924	/* Copy to output buffer escaping special characters. */
dcoban	0:1a61c61d0845	925	tailMB = pppAppend(c, tailMB, &pc->outACCM);
dcoban	0:1a61c61d0845	926	}
dcoban	0:1a61c61d0845	927	}
dcoban	0:1a61c61d0845	928
dcoban	0:1a61c61d0845	929	/* Add FCS and trailing flag. */
dcoban	0:1a61c61d0845	930	c = ~fcsOut & 0xFF;
dcoban	0:1a61c61d0845	931	tailMB = pppAppend(c, tailMB, &pc->outACCM);
dcoban	0:1a61c61d0845	932	c = (~fcsOut >> 8) & 0xFF;
dcoban	0:1a61c61d0845	933	tailMB = pppAppend(c, tailMB, &pc->outACCM);
dcoban	0:1a61c61d0845	934	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
dcoban	0:1a61c61d0845	935
dcoban	0:1a61c61d0845	936	/* If we failed to complete the packet, throw it away. */
dcoban	0:1a61c61d0845	937	if (!tailMB) {
dcoban	0:1a61c61d0845	938	PPPDEBUG(LOG_WARNING,
dcoban	0:1a61c61d0845	939	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
dcoban	0:1a61c61d0845	940	pd, protocol));
dcoban	0:1a61c61d0845	941	pbuf_free(headMB);
dcoban	0:1a61c61d0845	942	LINK_STATS_INC(link.memerr);
dcoban	0:1a61c61d0845	943	LINK_STATS_INC(link.drop);
dcoban	0:1a61c61d0845	944	snmp_inc_ifoutdiscards(netif);
dcoban	0:1a61c61d0845	945	return ERR_MEM;
dcoban	0:1a61c61d0845	946	}
dcoban	0:1a61c61d0845	947
dcoban	0:1a61c61d0845	948	/* Send it. */
dcoban	0:1a61c61d0845	949	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
dcoban	0:1a61c61d0845	950
dcoban	0:1a61c61d0845	951	nPut(pc, headMB);
dcoban	0:1a61c61d0845	952	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	953
dcoban	0:1a61c61d0845	954	return ERR_OK;
dcoban	0:1a61c61d0845	955	}
dcoban	0:1a61c61d0845	956
dcoban	0:1a61c61d0845	957	/* Get and set parameters for the given connection.
dcoban	0:1a61c61d0845	958	* Return 0 on success, an error code on failure. */
dcoban	0:1a61c61d0845	959	int
dcoban	0:1a61c61d0845	960	pppIOCtl(int pd, int cmd, void *arg)
dcoban	0:1a61c61d0845	961	{
dcoban	0:1a61c61d0845	962	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	963	int st = 0;
dcoban	0:1a61c61d0845	964
dcoban	0:1a61c61d0845	965	if (pd < 0 \|\| pd >= NUM_PPP) {
dcoban	0:1a61c61d0845	966	st = PPPERR_PARAM;
dcoban	0:1a61c61d0845	967	} else {
dcoban	0:1a61c61d0845	968	switch(cmd) {
dcoban	0:1a61c61d0845	969	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
dcoban	0:1a61c61d0845	970	if (arg) {
dcoban	0:1a61c61d0845	971	(int )arg = (int)(pc->if_up);
dcoban	0:1a61c61d0845	972	} else {
dcoban	0:1a61c61d0845	973	st = PPPERR_PARAM;
dcoban	0:1a61c61d0845	974	}
dcoban	0:1a61c61d0845	975	break;
dcoban	0:1a61c61d0845	976	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
dcoban	0:1a61c61d0845	977	if (arg) {
dcoban	0:1a61c61d0845	978	pc->errCode = (int )arg;
dcoban	0:1a61c61d0845	979	} else {
dcoban	0:1a61c61d0845	980	st = PPPERR_PARAM;
dcoban	0:1a61c61d0845	981	}
dcoban	0:1a61c61d0845	982	break;
dcoban	0:1a61c61d0845	983	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
dcoban	0:1a61c61d0845	984	if (arg) {
dcoban	0:1a61c61d0845	985	(int )arg = (int)(pc->errCode);
dcoban	0:1a61c61d0845	986	} else {
dcoban	0:1a61c61d0845	987	st = PPPERR_PARAM;
dcoban	0:1a61c61d0845	988	}
dcoban	0:1a61c61d0845	989	break;
dcoban	0:1a61c61d0845	990	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	991	case PPPCTLG_FD: /* Get the fd associated with the ppp */
dcoban	0:1a61c61d0845	992	if (arg) {
dcoban	0:1a61c61d0845	993	(sio_fd_t )arg = pc->fd;
dcoban	0:1a61c61d0845	994	} else {
dcoban	0:1a61c61d0845	995	st = PPPERR_PARAM;
dcoban	0:1a61c61d0845	996	}
dcoban	0:1a61c61d0845	997	break;
dcoban	0:1a61c61d0845	998	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	999	default:
dcoban	0:1a61c61d0845	1000	st = PPPERR_PARAM;
dcoban	0:1a61c61d0845	1001	break;
dcoban	0:1a61c61d0845	1002	}
dcoban	0:1a61c61d0845	1003	}
dcoban	0:1a61c61d0845	1004
dcoban	0:1a61c61d0845	1005	return st;
dcoban	0:1a61c61d0845	1006	}
dcoban	0:1a61c61d0845	1007
dcoban	0:1a61c61d0845	1008	/*
dcoban	0:1a61c61d0845	1009	* Return the Maximum Transmission Unit for the given PPP connection.
dcoban	0:1a61c61d0845	1010	*/
dcoban	0:1a61c61d0845	1011	u_short
dcoban	0:1a61c61d0845	1012	pppMTU(int pd)
dcoban	0:1a61c61d0845	1013	{
dcoban	0:1a61c61d0845	1014	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	1015	u_short st;
dcoban	0:1a61c61d0845	1016
dcoban	0:1a61c61d0845	1017	/* Validate parameters. */
dcoban	0:1a61c61d0845	1018	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
dcoban	0:1a61c61d0845	1019	st = 0;
dcoban	0:1a61c61d0845	1020	} else {
dcoban	0:1a61c61d0845	1021	st = pc->mtu;
dcoban	0:1a61c61d0845	1022	}
dcoban	0:1a61c61d0845	1023
dcoban	0:1a61c61d0845	1024	return st;
dcoban	0:1a61c61d0845	1025	}
dcoban	0:1a61c61d0845	1026
dcoban	0:1a61c61d0845	1027	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	1028	int
dcoban	0:1a61c61d0845	1029	pppWriteOverEthernet(int pd, const u_char *s, int n)
dcoban	0:1a61c61d0845	1030	{
dcoban	0:1a61c61d0845	1031	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	1032	struct pbuf *pb;
dcoban	0:1a61c61d0845	1033
dcoban	0:1a61c61d0845	1034	/* skip address & flags */
dcoban	0:1a61c61d0845	1035	s += 2;
dcoban	0:1a61c61d0845	1036	n -= 2;
dcoban	0:1a61c61d0845	1037
dcoban	0:1a61c61d0845	1038	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
dcoban	0:1a61c61d0845	1039	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
dcoban	0:1a61c61d0845	1040	if(!pb) {
dcoban	0:1a61c61d0845	1041	LINK_STATS_INC(link.memerr);
dcoban	0:1a61c61d0845	1042	LINK_STATS_INC(link.proterr);
dcoban	0:1a61c61d0845	1043	snmp_inc_ifoutdiscards(&pc->netif);
dcoban	0:1a61c61d0845	1044	return PPPERR_ALLOC;
dcoban	0:1a61c61d0845	1045	}
dcoban	0:1a61c61d0845	1046
dcoban	0:1a61c61d0845	1047	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
dcoban	0:1a61c61d0845	1048
dcoban	0:1a61c61d0845	1049	pc->lastXMit = sys_jiffies();
dcoban	0:1a61c61d0845	1050
dcoban	0:1a61c61d0845	1051	MEMCPY(pb->payload, s, n);
dcoban	0:1a61c61d0845	1052
dcoban	0:1a61c61d0845	1053	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
dcoban	0:1a61c61d0845	1054	LINK_STATS_INC(link.err);
dcoban	0:1a61c61d0845	1055	snmp_inc_ifoutdiscards(&pc->netif);
dcoban	0:1a61c61d0845	1056	return PPPERR_DEVICE;
dcoban	0:1a61c61d0845	1057	}
dcoban	0:1a61c61d0845	1058
dcoban	0:1a61c61d0845	1059	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
dcoban	0:1a61c61d0845	1060	snmp_inc_ifoutucastpkts(&pc->netif);
dcoban	0:1a61c61d0845	1061	LINK_STATS_INC(link.xmit);
dcoban	0:1a61c61d0845	1062	return PPPERR_NONE;
dcoban	0:1a61c61d0845	1063	}
dcoban	0:1a61c61d0845	1064	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	1065
dcoban	0:1a61c61d0845	1066	/*
dcoban	0:1a61c61d0845	1067	* Write n characters to a ppp link.
dcoban	0:1a61c61d0845	1068	* RETURN: >= 0 Number of characters written
dcoban	0:1a61c61d0845	1069	* -1 Failed to write to device
dcoban	0:1a61c61d0845	1070	*/
dcoban	0:1a61c61d0845	1071	int
dcoban	0:1a61c61d0845	1072	pppWrite(int pd, const u_char *s, int n)
dcoban	0:1a61c61d0845	1073	{
dcoban	0:1a61c61d0845	1074	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	1075	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	1076	u_char c;
dcoban	0:1a61c61d0845	1077	u_int fcsOut;
dcoban	0:1a61c61d0845	1078	struct pbuf headMB, tailMB;
dcoban	0:1a61c61d0845	1079	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	1080
dcoban	0:1a61c61d0845	1081	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	1082	if(pc->ethif) {
dcoban	0:1a61c61d0845	1083	return pppWriteOverEthernet(pd, s, n);
dcoban	0:1a61c61d0845	1084	}
dcoban	0:1a61c61d0845	1085	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	1086
dcoban	0:1a61c61d0845	1087	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	1088	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
dcoban	0:1a61c61d0845	1089	if (headMB == NULL) {
dcoban	0:1a61c61d0845	1090	LINK_STATS_INC(link.memerr);
dcoban	0:1a61c61d0845	1091	LINK_STATS_INC(link.proterr);
dcoban	0:1a61c61d0845	1092	snmp_inc_ifoutdiscards(&pc->netif);
dcoban	0:1a61c61d0845	1093	return PPPERR_ALLOC;
dcoban	0:1a61c61d0845	1094	}
dcoban	0:1a61c61d0845	1095
dcoban	0:1a61c61d0845	1096	tailMB = headMB;
dcoban	0:1a61c61d0845	1097
dcoban	0:1a61c61d0845	1098	/* If the link has been idle, we'll send a fresh flag character to
dcoban	0:1a61c61d0845	1099	* flush any noise. */
dcoban	0:1a61c61d0845	1100	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
dcoban	0:1a61c61d0845	1101	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
dcoban	0:1a61c61d0845	1102	}
dcoban	0:1a61c61d0845	1103	pc->lastXMit = sys_jiffies();
dcoban	0:1a61c61d0845	1104
dcoban	0:1a61c61d0845	1105	fcsOut = PPP_INITFCS;
dcoban	0:1a61c61d0845	1106	/* Load output buffer. */
dcoban	0:1a61c61d0845	1107	while (n-- > 0) {
dcoban	0:1a61c61d0845	1108	c = *s++;
dcoban	0:1a61c61d0845	1109
dcoban	0:1a61c61d0845	1110	/* Update FCS before checking for special characters. */
dcoban	0:1a61c61d0845	1111	fcsOut = PPP_FCS(fcsOut, c);
dcoban	0:1a61c61d0845	1112
dcoban	0:1a61c61d0845	1113	/* Copy to output buffer escaping special characters. */
dcoban	0:1a61c61d0845	1114	tailMB = pppAppend(c, tailMB, &pc->outACCM);
dcoban	0:1a61c61d0845	1115	}
dcoban	0:1a61c61d0845	1116
dcoban	0:1a61c61d0845	1117	/* Add FCS and trailing flag. */
dcoban	0:1a61c61d0845	1118	c = ~fcsOut & 0xFF;
dcoban	0:1a61c61d0845	1119	tailMB = pppAppend(c, tailMB, &pc->outACCM);
dcoban	0:1a61c61d0845	1120	c = (~fcsOut >> 8) & 0xFF;
dcoban	0:1a61c61d0845	1121	tailMB = pppAppend(c, tailMB, &pc->outACCM);
dcoban	0:1a61c61d0845	1122	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
dcoban	0:1a61c61d0845	1123
dcoban	0:1a61c61d0845	1124	/* If we failed to complete the packet, throw it away.
dcoban	0:1a61c61d0845	1125	* Otherwise send it. */
dcoban	0:1a61c61d0845	1126	if (!tailMB) {
dcoban	0:1a61c61d0845	1127	PPPDEBUG(LOG_WARNING,
dcoban	0:1a61c61d0845	1128	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
dcoban	0:1a61c61d0845	1129	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
dcoban	0:1a61c61d0845	1130	pbuf_free(headMB);
dcoban	0:1a61c61d0845	1131	LINK_STATS_INC(link.memerr);
dcoban	0:1a61c61d0845	1132	LINK_STATS_INC(link.proterr);
dcoban	0:1a61c61d0845	1133	snmp_inc_ifoutdiscards(&pc->netif);
dcoban	0:1a61c61d0845	1134	return PPPERR_ALLOC;
dcoban	0:1a61c61d0845	1135	}
dcoban	0:1a61c61d0845	1136
dcoban	0:1a61c61d0845	1137	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
dcoban	0:1a61c61d0845	1138	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
dcoban	0:1a61c61d0845	1139	nPut(pc, headMB);
dcoban	0:1a61c61d0845	1140	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	1141
dcoban	0:1a61c61d0845	1142	return PPPERR_NONE;
dcoban	0:1a61c61d0845	1143	}
dcoban	0:1a61c61d0845	1144
dcoban	0:1a61c61d0845	1145	/*
dcoban	0:1a61c61d0845	1146	* ppp_send_config - configure the transmit characteristics of
dcoban	0:1a61c61d0845	1147	* the ppp interface.
dcoban	0:1a61c61d0845	1148	*/
dcoban	0:1a61c61d0845	1149	void
dcoban	0:1a61c61d0845	1150	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
dcoban	0:1a61c61d0845	1151	{
dcoban	0:1a61c61d0845	1152	PPPControl *pc = &pppControl[unit];
dcoban	0:1a61c61d0845	1153	int i;
dcoban	0:1a61c61d0845	1154
dcoban	0:1a61c61d0845	1155	pc->mtu = mtu;
dcoban	0:1a61c61d0845	1156	pc->pcomp = pcomp;
dcoban	0:1a61c61d0845	1157	pc->accomp = accomp;
dcoban	0:1a61c61d0845	1158
dcoban	0:1a61c61d0845	1159	/* Load the ACCM bits for the 32 control codes. */
dcoban	0:1a61c61d0845	1160	for (i = 0; i < 32/8; i++) {
dcoban	0:1a61c61d0845	1161	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
dcoban	0:1a61c61d0845	1162	}
dcoban	0:1a61c61d0845	1163	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
dcoban	0:1a61c61d0845	1164	unit,
dcoban	0:1a61c61d0845	1165	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
dcoban	0:1a61c61d0845	1166	}
dcoban	0:1a61c61d0845	1167
dcoban	0:1a61c61d0845	1168
dcoban	0:1a61c61d0845	1169	/*
dcoban	0:1a61c61d0845	1170	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
dcoban	0:1a61c61d0845	1171	*/
dcoban	0:1a61c61d0845	1172	void
dcoban	0:1a61c61d0845	1173	ppp_set_xaccm(int unit, ext_accm *accm)
dcoban	0:1a61c61d0845	1174	{
dcoban	0:1a61c61d0845	1175	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
dcoban	0:1a61c61d0845	1176	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
dcoban	0:1a61c61d0845	1177	unit,
dcoban	0:1a61c61d0845	1178	pppControl[unit].outACCM[0],
dcoban	0:1a61c61d0845	1179	pppControl[unit].outACCM[1],
dcoban	0:1a61c61d0845	1180	pppControl[unit].outACCM[2],
dcoban	0:1a61c61d0845	1181	pppControl[unit].outACCM[3]));
dcoban	0:1a61c61d0845	1182	}
dcoban	0:1a61c61d0845	1183
dcoban	0:1a61c61d0845	1184
dcoban	0:1a61c61d0845	1185	/*
dcoban	0:1a61c61d0845	1186	* ppp_recv_config - configure the receive-side characteristics of
dcoban	0:1a61c61d0845	1187	* the ppp interface.
dcoban	0:1a61c61d0845	1188	*/
dcoban	0:1a61c61d0845	1189	void
dcoban	0:1a61c61d0845	1190	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
dcoban	0:1a61c61d0845	1191	{
dcoban	0:1a61c61d0845	1192	PPPControl *pc = &pppControl[unit];
dcoban	0:1a61c61d0845	1193	int i;
dcoban	0:1a61c61d0845	1194	SYS_ARCH_DECL_PROTECT(lev);
dcoban	0:1a61c61d0845	1195
dcoban	0:1a61c61d0845	1196	LWIP_UNUSED_ARG(accomp);
dcoban	0:1a61c61d0845	1197	LWIP_UNUSED_ARG(pcomp);
dcoban	0:1a61c61d0845	1198	LWIP_UNUSED_ARG(mru);
dcoban	0:1a61c61d0845	1199
dcoban	0:1a61c61d0845	1200	/* Load the ACCM bits for the 32 control codes. */
dcoban	0:1a61c61d0845	1201	SYS_ARCH_PROTECT(lev);
dcoban	0:1a61c61d0845	1202	for (i = 0; i < 32 / 8; i++) {
dcoban	0:1a61c61d0845	1203	/* @todo: does this work? ext_accm has been modified from pppd! */
dcoban	0:1a61c61d0845	1204	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
dcoban	0:1a61c61d0845	1205	}
dcoban	0:1a61c61d0845	1206	SYS_ARCH_UNPROTECT(lev);
dcoban	0:1a61c61d0845	1207	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
dcoban	0:1a61c61d0845	1208	unit,
dcoban	0:1a61c61d0845	1209	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
dcoban	0:1a61c61d0845	1210	}
dcoban	0:1a61c61d0845	1211
dcoban	0:1a61c61d0845	1212	#if 0
dcoban	0:1a61c61d0845	1213	/*
dcoban	0:1a61c61d0845	1214	* ccp_test - ask kernel whether a given compression method
dcoban	0:1a61c61d0845	1215	* is acceptable for use. Returns 1 if the method and parameters
dcoban	0:1a61c61d0845	1216	* are OK, 0 if the method is known but the parameters are not OK
dcoban	0:1a61c61d0845	1217	* (e.g. code size should be reduced), or -1 if the method is unknown.
dcoban	0:1a61c61d0845	1218	*/
dcoban	0:1a61c61d0845	1219	int
dcoban	0:1a61c61d0845	1220	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
dcoban	0:1a61c61d0845	1221	{
dcoban	0:1a61c61d0845	1222	return 0; /* XXX Currently no compression. */
dcoban	0:1a61c61d0845	1223	}
dcoban	0:1a61c61d0845	1224
dcoban	0:1a61c61d0845	1225	/*
dcoban	0:1a61c61d0845	1226	* ccp_flags_set - inform kernel about the current state of CCP.
dcoban	0:1a61c61d0845	1227	*/
dcoban	0:1a61c61d0845	1228	void
dcoban	0:1a61c61d0845	1229	ccp_flags_set(int unit, int isopen, int isup)
dcoban	0:1a61c61d0845	1230	{
dcoban	0:1a61c61d0845	1231	/* XXX */
dcoban	0:1a61c61d0845	1232	}
dcoban	0:1a61c61d0845	1233
dcoban	0:1a61c61d0845	1234	/*
dcoban	0:1a61c61d0845	1235	* ccp_fatal_error - returns 1 if decompression was disabled as a
dcoban	0:1a61c61d0845	1236	* result of an error detected after decompression of a packet,
dcoban	0:1a61c61d0845	1237	* 0 otherwise. This is necessary because of patent nonsense.
dcoban	0:1a61c61d0845	1238	*/
dcoban	0:1a61c61d0845	1239	int
dcoban	0:1a61c61d0845	1240	ccp_fatal_error(int unit)
dcoban	0:1a61c61d0845	1241	{
dcoban	0:1a61c61d0845	1242	/* XXX */
dcoban	0:1a61c61d0845	1243	return 0;
dcoban	0:1a61c61d0845	1244	}
dcoban	0:1a61c61d0845	1245	#endif
dcoban	0:1a61c61d0845	1246
dcoban	0:1a61c61d0845	1247	/*
dcoban	0:1a61c61d0845	1248	* get_idle_time - return how long the link has been idle.
dcoban	0:1a61c61d0845	1249	*/
dcoban	0:1a61c61d0845	1250	int
dcoban	0:1a61c61d0845	1251	get_idle_time(int u, struct ppp_idle *ip)
dcoban	0:1a61c61d0845	1252	{
dcoban	0:1a61c61d0845	1253	/* XXX */
dcoban	0:1a61c61d0845	1254	LWIP_UNUSED_ARG(u);
dcoban	0:1a61c61d0845	1255	LWIP_UNUSED_ARG(ip);
dcoban	0:1a61c61d0845	1256
dcoban	0:1a61c61d0845	1257	return 0;
dcoban	0:1a61c61d0845	1258	}
dcoban	0:1a61c61d0845	1259
dcoban	0:1a61c61d0845	1260
dcoban	0:1a61c61d0845	1261	/*
dcoban	0:1a61c61d0845	1262	* Return user specified netmask, modified by any mask we might determine
dcoban	0:1a61c61d0845	1263	* for address `addr' (in network byte order).
dcoban	0:1a61c61d0845	1264	* Here we scan through the system's list of interfaces, looking for
dcoban	0:1a61c61d0845	1265	* any non-point-to-point interfaces which might appear to be on the same
dcoban	0:1a61c61d0845	1266	* network as `addr'. If we find any, we OR in their netmask to the
dcoban	0:1a61c61d0845	1267	* user-specified netmask.
dcoban	0:1a61c61d0845	1268	*/
dcoban	0:1a61c61d0845	1269	u32_t
dcoban	0:1a61c61d0845	1270	GetMask(u32_t addr)
dcoban	0:1a61c61d0845	1271	{
dcoban	0:1a61c61d0845	1272	u32_t mask, nmask;
dcoban	0:1a61c61d0845	1273
dcoban	0:1a61c61d0845	1274	htonl(addr);
dcoban	0:1a61c61d0845	1275	if (IP_CLASSA(addr)) { /* determine network mask for address class */
dcoban	0:1a61c61d0845	1276	nmask = IP_CLASSA_NET;
dcoban	0:1a61c61d0845	1277	} else if (IP_CLASSB(addr)) {
dcoban	0:1a61c61d0845	1278	nmask = IP_CLASSB_NET;
dcoban	0:1a61c61d0845	1279	} else {
dcoban	0:1a61c61d0845	1280	nmask = IP_CLASSC_NET;
dcoban	0:1a61c61d0845	1281	}
dcoban	0:1a61c61d0845	1282
dcoban	0:1a61c61d0845	1283	/* class D nets are disallowed by bad_ip_adrs */
dcoban	0:1a61c61d0845	1284	mask = subnetMask \| htonl(nmask);
dcoban	0:1a61c61d0845	1285
dcoban	0:1a61c61d0845	1286	/* XXX
dcoban	0:1a61c61d0845	1287	* Scan through the system's network interfaces.
dcoban	0:1a61c61d0845	1288	* Get each netmask and OR them into our mask.
dcoban	0:1a61c61d0845	1289	*/
dcoban	0:1a61c61d0845	1290
dcoban	0:1a61c61d0845	1291	return mask;
dcoban	0:1a61c61d0845	1292	}
dcoban	0:1a61c61d0845	1293
dcoban	0:1a61c61d0845	1294	/*
dcoban	0:1a61c61d0845	1295	* sifvjcomp - config tcp header compression
dcoban	0:1a61c61d0845	1296	*/
dcoban	0:1a61c61d0845	1297	int
dcoban	0:1a61c61d0845	1298	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
dcoban	0:1a61c61d0845	1299	{
dcoban	0:1a61c61d0845	1300	#if PPPOS_SUPPORT && VJ_SUPPORT
dcoban	0:1a61c61d0845	1301	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	1302
dcoban	0:1a61c61d0845	1303	pc->vjEnabled = vjcomp;
dcoban	0:1a61c61d0845	1304	pc->vjComp.compressSlot = cidcomp;
dcoban	0:1a61c61d0845	1305	pc->vjComp.maxSlotIndex = maxcid;
dcoban	0:1a61c61d0845	1306	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
dcoban	0:1a61c61d0845	1307	vjcomp, cidcomp, maxcid));
dcoban	0:1a61c61d0845	1308	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
dcoban	0:1a61c61d0845	1309	LWIP_UNUSED_ARG(pd);
dcoban	0:1a61c61d0845	1310	LWIP_UNUSED_ARG(vjcomp);
dcoban	0:1a61c61d0845	1311	LWIP_UNUSED_ARG(cidcomp);
dcoban	0:1a61c61d0845	1312	LWIP_UNUSED_ARG(maxcid);
dcoban	0:1a61c61d0845	1313	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
dcoban	0:1a61c61d0845	1314
dcoban	0:1a61c61d0845	1315	return 0;
dcoban	0:1a61c61d0845	1316	}
dcoban	0:1a61c61d0845	1317
dcoban	0:1a61c61d0845	1318	/*
dcoban	0:1a61c61d0845	1319	* pppifNetifInit - netif init callback
dcoban	0:1a61c61d0845	1320	*/
dcoban	0:1a61c61d0845	1321	static err_t
dcoban	0:1a61c61d0845	1322	pppifNetifInit(struct netif *netif)
dcoban	0:1a61c61d0845	1323	{
dcoban	0:1a61c61d0845	1324	netif->name[0] = 'p';
dcoban	0:1a61c61d0845	1325	netif->name[1] = 'p';
dcoban	0:1a61c61d0845	1326	netif->output = pppifOutput;
dcoban	0:1a61c61d0845	1327	netif->mtu = pppMTU((int)(size_t)netif->state);
dcoban	0:1a61c61d0845	1328	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
dcoban	0:1a61c61d0845	1329	#if LWIP_NETIF_HOSTNAME
dcoban	0:1a61c61d0845	1330	/* @todo: Initialize interface hostname */
dcoban	0:1a61c61d0845	1331	/* netif_set_hostname(netif, "lwip"); */
dcoban	0:1a61c61d0845	1332	#endif /* LWIP_NETIF_HOSTNAME */
dcoban	0:1a61c61d0845	1333	return ERR_OK;
dcoban	0:1a61c61d0845	1334	}
dcoban	0:1a61c61d0845	1335
dcoban	0:1a61c61d0845	1336
dcoban	0:1a61c61d0845	1337	/*
dcoban	0:1a61c61d0845	1338	* sifup - Config the interface up and enable IP packets to pass.
dcoban	0:1a61c61d0845	1339	*/
dcoban	0:1a61c61d0845	1340	int
dcoban	0:1a61c61d0845	1341	sifup(int pd)
dcoban	0:1a61c61d0845	1342	{
dcoban	0:1a61c61d0845	1343	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	1344	int st = 1;
dcoban	0:1a61c61d0845	1345
dcoban	0:1a61c61d0845	1346	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
dcoban	0:1a61c61d0845	1347	st = 0;
dcoban	0:1a61c61d0845	1348	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
dcoban	0:1a61c61d0845	1349	} else {
dcoban	0:1a61c61d0845	1350	netif_remove(&pc->netif);
dcoban	0:1a61c61d0845	1351	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
dcoban	0:1a61c61d0845	1352	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
dcoban	0:1a61c61d0845	1353	netif_set_up(&pc->netif);
dcoban	0:1a61c61d0845	1354	pc->if_up = 1;
dcoban	0:1a61c61d0845	1355	pc->errCode = PPPERR_NONE;
dcoban	0:1a61c61d0845	1356
dcoban	0:1a61c61d0845	1357	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
dcoban	0:1a61c61d0845	1358	if (pc->linkStatusCB) {
dcoban	0:1a61c61d0845	1359	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
dcoban	0:1a61c61d0845	1360	}
dcoban	0:1a61c61d0845	1361	} else {
dcoban	0:1a61c61d0845	1362	st = 0;
dcoban	0:1a61c61d0845	1363	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
dcoban	0:1a61c61d0845	1364	}
dcoban	0:1a61c61d0845	1365	}
dcoban	0:1a61c61d0845	1366
dcoban	0:1a61c61d0845	1367	return st;
dcoban	0:1a61c61d0845	1368	}
dcoban	0:1a61c61d0845	1369
dcoban	0:1a61c61d0845	1370	/*
dcoban	0:1a61c61d0845	1371	* sifnpmode - Set the mode for handling packets for a given NP.
dcoban	0:1a61c61d0845	1372	*/
dcoban	0:1a61c61d0845	1373	int
dcoban	0:1a61c61d0845	1374	sifnpmode(int u, int proto, enum NPmode mode)
dcoban	0:1a61c61d0845	1375	{
dcoban	0:1a61c61d0845	1376	LWIP_UNUSED_ARG(u);
dcoban	0:1a61c61d0845	1377	LWIP_UNUSED_ARG(proto);
dcoban	0:1a61c61d0845	1378	LWIP_UNUSED_ARG(mode);
dcoban	0:1a61c61d0845	1379	return 0;
dcoban	0:1a61c61d0845	1380	}
dcoban	0:1a61c61d0845	1381
dcoban	0:1a61c61d0845	1382	/*
dcoban	0:1a61c61d0845	1383	* sifdown - Config the interface down and disable IP.
dcoban	0:1a61c61d0845	1384	*/
dcoban	0:1a61c61d0845	1385	int
dcoban	0:1a61c61d0845	1386	sifdown(int pd)
dcoban	0:1a61c61d0845	1387	{
dcoban	0:1a61c61d0845	1388	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	1389	int st = 1;
dcoban	0:1a61c61d0845	1390
dcoban	0:1a61c61d0845	1391	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
dcoban	0:1a61c61d0845	1392	st = 0;
dcoban	0:1a61c61d0845	1393	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
dcoban	0:1a61c61d0845	1394	} else {
dcoban	0:1a61c61d0845	1395	pc->if_up = 0;
dcoban	0:1a61c61d0845	1396	/* make sure the netif status callback is called */
dcoban	0:1a61c61d0845	1397	netif_set_down(&pc->netif);
dcoban	0:1a61c61d0845	1398	netif_remove(&pc->netif);
dcoban	0:1a61c61d0845	1399	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
dcoban	0:1a61c61d0845	1400	if (pc->linkStatusCB) {
dcoban	0:1a61c61d0845	1401	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
dcoban	0:1a61c61d0845	1402	}
dcoban	0:1a61c61d0845	1403	}
dcoban	0:1a61c61d0845	1404	return st;
dcoban	0:1a61c61d0845	1405	}
dcoban	0:1a61c61d0845	1406
dcoban	0:1a61c61d0845	1407	/**
dcoban	0:1a61c61d0845	1408	* sifaddr - Config the interface IP addresses and netmask.
dcoban	0:1a61c61d0845	1409	* @param pd Interface unit ???
dcoban	0:1a61c61d0845	1410	* @param o Our IP address ???
dcoban	0:1a61c61d0845	1411	* @param h His IP address ???
dcoban	0:1a61c61d0845	1412	* @param m IP subnet mask ???
dcoban	0:1a61c61d0845	1413	* @param ns1 Primary DNS
dcoban	0:1a61c61d0845	1414	* @param ns2 Secondary DNS
dcoban	0:1a61c61d0845	1415	*/
dcoban	0:1a61c61d0845	1416	int
dcoban	0:1a61c61d0845	1417	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
dcoban	0:1a61c61d0845	1418	{
dcoban	0:1a61c61d0845	1419	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	1420	int st = 1;
dcoban	0:1a61c61d0845	1421
dcoban	0:1a61c61d0845	1422	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
dcoban	0:1a61c61d0845	1423	st = 0;
dcoban	0:1a61c61d0845	1424	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
dcoban	0:1a61c61d0845	1425	} else {
dcoban	0:1a61c61d0845	1426	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
dcoban	0:1a61c61d0845	1427	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
dcoban	0:1a61c61d0845	1428	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
dcoban	0:1a61c61d0845	1429	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
dcoban	0:1a61c61d0845	1430	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
dcoban	0:1a61c61d0845	1431	}
dcoban	0:1a61c61d0845	1432	return st;
dcoban	0:1a61c61d0845	1433	}
dcoban	0:1a61c61d0845	1434
dcoban	0:1a61c61d0845	1435	/**
dcoban	0:1a61c61d0845	1436	* cifaddr - Clear the interface IP addresses, and delete routes
dcoban	0:1a61c61d0845	1437	* through the interface if possible.
dcoban	0:1a61c61d0845	1438	* @param pd Interface unit ???
dcoban	0:1a61c61d0845	1439	* @param o Our IP address ???
dcoban	0:1a61c61d0845	1440	* @param h IP broadcast address ???
dcoban	0:1a61c61d0845	1441	*/
dcoban	0:1a61c61d0845	1442	int
dcoban	0:1a61c61d0845	1443	cifaddr( int pd, u32_t o, u32_t h)
dcoban	0:1a61c61d0845	1444	{
dcoban	0:1a61c61d0845	1445	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	1446	int st = 1;
dcoban	0:1a61c61d0845	1447
dcoban	0:1a61c61d0845	1448	LWIP_UNUSED_ARG(o);
dcoban	0:1a61c61d0845	1449	LWIP_UNUSED_ARG(h);
dcoban	0:1a61c61d0845	1450	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
dcoban	0:1a61c61d0845	1451	st = 0;
dcoban	0:1a61c61d0845	1452	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
dcoban	0:1a61c61d0845	1453	} else {
dcoban	0:1a61c61d0845	1454	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
dcoban	0:1a61c61d0845	1455	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
dcoban	0:1a61c61d0845	1456	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
dcoban	0:1a61c61d0845	1457	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
dcoban	0:1a61c61d0845	1458	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
dcoban	0:1a61c61d0845	1459	}
dcoban	0:1a61c61d0845	1460	return st;
dcoban	0:1a61c61d0845	1461	}
dcoban	0:1a61c61d0845	1462
dcoban	0:1a61c61d0845	1463	/*
dcoban	0:1a61c61d0845	1464	* sifdefaultroute - assign a default route through the address given.
dcoban	0:1a61c61d0845	1465	*/
dcoban	0:1a61c61d0845	1466	int
dcoban	0:1a61c61d0845	1467	sifdefaultroute(int pd, u32_t l, u32_t g)
dcoban	0:1a61c61d0845	1468	{
dcoban	0:1a61c61d0845	1469	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	1470	int st = 1;
dcoban	0:1a61c61d0845	1471
dcoban	0:1a61c61d0845	1472	LWIP_UNUSED_ARG(l);
dcoban	0:1a61c61d0845	1473	LWIP_UNUSED_ARG(g);
dcoban	0:1a61c61d0845	1474
dcoban	0:1a61c61d0845	1475	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
dcoban	0:1a61c61d0845	1476	st = 0;
dcoban	0:1a61c61d0845	1477	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
dcoban	0:1a61c61d0845	1478	} else {
dcoban	0:1a61c61d0845	1479	netif_set_default(&pc->netif);
dcoban	0:1a61c61d0845	1480	}
dcoban	0:1a61c61d0845	1481
dcoban	0:1a61c61d0845	1482	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
dcoban	0:1a61c61d0845	1483
dcoban	0:1a61c61d0845	1484	return st;
dcoban	0:1a61c61d0845	1485	}
dcoban	0:1a61c61d0845	1486
dcoban	0:1a61c61d0845	1487	/*
dcoban	0:1a61c61d0845	1488	* cifdefaultroute - delete a default route through the address given.
dcoban	0:1a61c61d0845	1489	*/
dcoban	0:1a61c61d0845	1490	int
dcoban	0:1a61c61d0845	1491	cifdefaultroute(int pd, u32_t l, u32_t g)
dcoban	0:1a61c61d0845	1492	{
dcoban	0:1a61c61d0845	1493	PPPControl *pc = &pppControl[pd];
dcoban	0:1a61c61d0845	1494	int st = 1;
dcoban	0:1a61c61d0845	1495
dcoban	0:1a61c61d0845	1496	LWIP_UNUSED_ARG(l);
dcoban	0:1a61c61d0845	1497	LWIP_UNUSED_ARG(g);
dcoban	0:1a61c61d0845	1498
dcoban	0:1a61c61d0845	1499	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
dcoban	0:1a61c61d0845	1500	st = 0;
dcoban	0:1a61c61d0845	1501	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
dcoban	0:1a61c61d0845	1502	} else {
dcoban	0:1a61c61d0845	1503	netif_set_default(NULL);
dcoban	0:1a61c61d0845	1504	}
dcoban	0:1a61c61d0845	1505
dcoban	0:1a61c61d0845	1506	return st;
dcoban	0:1a61c61d0845	1507	}
dcoban	0:1a61c61d0845	1508
dcoban	0:1a61c61d0845	1509	/**********************************/
dcoban	0:1a61c61d0845	1510	/* LOCAL FUNCTION DEFINITIONS */
dcoban	0:1a61c61d0845	1511	/**********************************/
dcoban	0:1a61c61d0845	1512
dcoban	0:1a61c61d0845	1513	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
dcoban	0:1a61c61d0845	1514	/* The main PPP process function. This implements the state machine according
dcoban	0:1a61c61d0845	1515	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
dcoban	0:1a61c61d0845	1516	static void
dcoban	0:1a61c61d0845	1517	pppInputThread(void *arg)
dcoban	0:1a61c61d0845	1518	{
dcoban	0:1a61c61d0845	1519	int count;
dcoban	0:1a61c61d0845	1520	PPPControlRx *pcrx = arg;
dcoban	0:1a61c61d0845	1521
dcoban	0:1a61c61d0845	1522	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
dcoban	0:1a61c61d0845	1523	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
dcoban	0:1a61c61d0845	1524	if(count > 0) {
dcoban	0:1a61c61d0845	1525	pppInProc(pcrx, pcrx->rxbuf, count);
dcoban	0:1a61c61d0845	1526	} else {
dcoban	0:1a61c61d0845	1527	/* nothing received, give other tasks a chance to run */
dcoban	0:1a61c61d0845	1528	sys_msleep(1);
dcoban	0:1a61c61d0845	1529	}
dcoban	0:1a61c61d0845	1530	}
dcoban	0:1a61c61d0845	1531	}
dcoban	0:1a61c61d0845	1532	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
dcoban	0:1a61c61d0845	1533
dcoban	0:1a61c61d0845	1534	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	1535
dcoban	0:1a61c61d0845	1536	void
dcoban	0:1a61c61d0845	1537	pppOverEthernetInitFailed(int pd)
dcoban	0:1a61c61d0845	1538	{
dcoban	0:1a61c61d0845	1539	PPPControl* pc;
dcoban	0:1a61c61d0845	1540
dcoban	0:1a61c61d0845	1541	pppHup(pd);
dcoban	0:1a61c61d0845	1542	pppStop(pd);
dcoban	0:1a61c61d0845	1543
dcoban	0:1a61c61d0845	1544	pc = &pppControl[pd];
dcoban	0:1a61c61d0845	1545	pppoe_destroy(&pc->netif);
dcoban	0:1a61c61d0845	1546	pc->openFlag = 0;
dcoban	0:1a61c61d0845	1547
dcoban	0:1a61c61d0845	1548	if(pc->linkStatusCB) {
dcoban	0:1a61c61d0845	1549	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
dcoban	0:1a61c61d0845	1550	}
dcoban	0:1a61c61d0845	1551	}
dcoban	0:1a61c61d0845	1552
dcoban	0:1a61c61d0845	1553	static void
dcoban	0:1a61c61d0845	1554	pppOverEthernetLinkStatusCB(int pd, int up)
dcoban	0:1a61c61d0845	1555	{
dcoban	0:1a61c61d0845	1556	if(up) {
dcoban	0:1a61c61d0845	1557	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
dcoban	0:1a61c61d0845	1558	pppStart(pd);
dcoban	0:1a61c61d0845	1559	} else {
dcoban	0:1a61c61d0845	1560	pppOverEthernetInitFailed(pd);
dcoban	0:1a61c61d0845	1561	}
dcoban	0:1a61c61d0845	1562	}
dcoban	0:1a61c61d0845	1563	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	1564
dcoban	0:1a61c61d0845	1565	struct pbuf *
dcoban	0:1a61c61d0845	1566	pppSingleBuf(struct pbuf *p)
dcoban	0:1a61c61d0845	1567	{
dcoban	0:1a61c61d0845	1568	struct pbuf q, b;
dcoban	0:1a61c61d0845	1569	u_char *pl;
dcoban	0:1a61c61d0845	1570
dcoban	0:1a61c61d0845	1571	if(p->tot_len == p->len) {
dcoban	0:1a61c61d0845	1572	return p;
dcoban	0:1a61c61d0845	1573	}
dcoban	0:1a61c61d0845	1574
dcoban	0:1a61c61d0845	1575	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
dcoban	0:1a61c61d0845	1576	if(!q) {
dcoban	0:1a61c61d0845	1577	PPPDEBUG(LOG_ERR,
dcoban	0:1a61c61d0845	1578	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
dcoban	0:1a61c61d0845	1579	return p; /* live dangerously */
dcoban	0:1a61c61d0845	1580	}
dcoban	0:1a61c61d0845	1581
dcoban	0:1a61c61d0845	1582	for(b = p, pl = (u_char *) q->payload; b != NULL; b = b->next) {
dcoban	0:1a61c61d0845	1583	MEMCPY(pl, b->payload, b->len);
dcoban	0:1a61c61d0845	1584	pl += b->len;
dcoban	0:1a61c61d0845	1585	}
dcoban	0:1a61c61d0845	1586
dcoban	0:1a61c61d0845	1587	pbuf_free(p);
dcoban	0:1a61c61d0845	1588
dcoban	0:1a61c61d0845	1589	return q;
dcoban	0:1a61c61d0845	1590	}
dcoban	0:1a61c61d0845	1591
dcoban	0:1a61c61d0845	1592	struct pppInputHeader {
dcoban	0:1a61c61d0845	1593	int unit;
dcoban	0:1a61c61d0845	1594	u16_t proto;
dcoban	0:1a61c61d0845	1595	};
dcoban	0:1a61c61d0845	1596
dcoban	0:1a61c61d0845	1597	/*
dcoban	0:1a61c61d0845	1598	* Pass the processed input packet to the appropriate handler.
dcoban	0:1a61c61d0845	1599	* This function and all handlers run in the context of the tcpip_thread
dcoban	0:1a61c61d0845	1600	*/
dcoban	0:1a61c61d0845	1601	static void
dcoban	0:1a61c61d0845	1602	pppInput(void *arg)
dcoban	0:1a61c61d0845	1603	{
dcoban	0:1a61c61d0845	1604	struct pbuf nb = (struct pbuf )arg;
dcoban	0:1a61c61d0845	1605	u16_t protocol;
dcoban	0:1a61c61d0845	1606	int pd;
dcoban	0:1a61c61d0845	1607
dcoban	0:1a61c61d0845	1608	pd = ((struct pppInputHeader *)nb->payload)->unit;
dcoban	0:1a61c61d0845	1609	protocol = ((struct pppInputHeader *)nb->payload)->proto;
dcoban	0:1a61c61d0845	1610
dcoban	0:1a61c61d0845	1611	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
dcoban	0:1a61c61d0845	1612	LWIP_ASSERT("pbuf_header failed\n", 0);
dcoban	0:1a61c61d0845	1613	goto drop;
dcoban	0:1a61c61d0845	1614	}
dcoban	0:1a61c61d0845	1615
dcoban	0:1a61c61d0845	1616	LINK_STATS_INC(link.recv);
dcoban	0:1a61c61d0845	1617	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
dcoban	0:1a61c61d0845	1618	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
dcoban	0:1a61c61d0845	1619
dcoban	0:1a61c61d0845	1620	/*
dcoban	0:1a61c61d0845	1621	* Toss all non-LCP packets unless LCP is OPEN.
dcoban	0:1a61c61d0845	1622	* Until we get past the authentication phase, toss all packets
dcoban	0:1a61c61d0845	1623	* except LCP, LQR and authentication packets.
dcoban	0:1a61c61d0845	1624	*/
dcoban	0:1a61c61d0845	1625	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
dcoban	0:1a61c61d0845	1626	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
dcoban	0:1a61c61d0845	1627	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
dcoban	0:1a61c61d0845	1628	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
dcoban	0:1a61c61d0845	1629	goto drop;
dcoban	0:1a61c61d0845	1630	}
dcoban	0:1a61c61d0845	1631	}
dcoban	0:1a61c61d0845	1632
dcoban	0:1a61c61d0845	1633	switch(protocol) {
dcoban	0:1a61c61d0845	1634	case PPP_VJC_COMP: /* VJ compressed TCP */
dcoban	0:1a61c61d0845	1635	#if PPPOS_SUPPORT && VJ_SUPPORT
dcoban	0:1a61c61d0845	1636	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
dcoban	0:1a61c61d0845	1637	/*
dcoban	0:1a61c61d0845	1638	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
dcoban	0:1a61c61d0845	1639	* pass the result to IP.
dcoban	0:1a61c61d0845	1640	*/
dcoban	0:1a61c61d0845	1641	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
dcoban	0:1a61c61d0845	1642	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
dcoban	0:1a61c61d0845	1643	return;
dcoban	0:1a61c61d0845	1644	}
dcoban	0:1a61c61d0845	1645	/* Something's wrong so drop it. */
dcoban	0:1a61c61d0845	1646	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
dcoban	0:1a61c61d0845	1647	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
dcoban	0:1a61c61d0845	1648	/* No handler for this protocol so drop the packet. */
dcoban	0:1a61c61d0845	1649	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
dcoban	0:1a61c61d0845	1650	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
dcoban	0:1a61c61d0845	1651	break;
dcoban	0:1a61c61d0845	1652
dcoban	0:1a61c61d0845	1653	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
dcoban	0:1a61c61d0845	1654	#if PPPOS_SUPPORT && VJ_SUPPORT
dcoban	0:1a61c61d0845	1655	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
dcoban	0:1a61c61d0845	1656	/*
dcoban	0:1a61c61d0845	1657	* Process the TCP/IP header for VJ header compression and then pass
dcoban	0:1a61c61d0845	1658	* the packet to IP.
dcoban	0:1a61c61d0845	1659	*/
dcoban	0:1a61c61d0845	1660	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
dcoban	0:1a61c61d0845	1661	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
dcoban	0:1a61c61d0845	1662	return;
dcoban	0:1a61c61d0845	1663	}
dcoban	0:1a61c61d0845	1664	/* Something's wrong so drop it. */
dcoban	0:1a61c61d0845	1665	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
dcoban	0:1a61c61d0845	1666	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
dcoban	0:1a61c61d0845	1667	/* No handler for this protocol so drop the packet. */
dcoban	0:1a61c61d0845	1668	PPPDEBUG(LOG_INFO,
dcoban	0:1a61c61d0845	1669	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
dcoban	0:1a61c61d0845	1670	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
dcoban	0:1a61c61d0845	1671	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
dcoban	0:1a61c61d0845	1672	break;
dcoban	0:1a61c61d0845	1673
dcoban	0:1a61c61d0845	1674	case PPP_IP: /* Internet Protocol */
dcoban	0:1a61c61d0845	1675	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
dcoban	0:1a61c61d0845	1676	if (pppControl[pd].netif.input) {
dcoban	0:1a61c61d0845	1677	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
dcoban	0:1a61c61d0845	1678	return;
dcoban	0:1a61c61d0845	1679	}
dcoban	0:1a61c61d0845	1680	break;
dcoban	0:1a61c61d0845	1681
dcoban	0:1a61c61d0845	1682	default: {
dcoban	0:1a61c61d0845	1683	struct protent *protp;
dcoban	0:1a61c61d0845	1684	int i;
dcoban	0:1a61c61d0845	1685
dcoban	0:1a61c61d0845	1686	/*
dcoban	0:1a61c61d0845	1687	* Upcall the proper protocol input routine.
dcoban	0:1a61c61d0845	1688	*/
dcoban	0:1a61c61d0845	1689	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
dcoban	0:1a61c61d0845	1690	if (protp->protocol == protocol && protp->enabled_flag) {
dcoban	0:1a61c61d0845	1691	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
dcoban	0:1a61c61d0845	1692	nb = pppSingleBuf(nb);
dcoban	0:1a61c61d0845	1693	(protp->input)(pd, (u_char )nb->payload, nb->len);
dcoban	0:1a61c61d0845	1694	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
dcoban	0:1a61c61d0845	1695	goto out;
dcoban	0:1a61c61d0845	1696	}
dcoban	0:1a61c61d0845	1697	}
dcoban	0:1a61c61d0845	1698
dcoban	0:1a61c61d0845	1699	/* No handler for this protocol so reject the packet. */
dcoban	0:1a61c61d0845	1700	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
dcoban	0:1a61c61d0845	1701	if (pbuf_header(nb, sizeof(protocol))) {
dcoban	0:1a61c61d0845	1702	LWIP_ASSERT("pbuf_header failed\n", 0);
dcoban	0:1a61c61d0845	1703	goto drop;
dcoban	0:1a61c61d0845	1704	}
dcoban	0:1a61c61d0845	1705	#if BYTE_ORDER == LITTLE_ENDIAN
dcoban	0:1a61c61d0845	1706	protocol = htons(protocol);
dcoban	0:1a61c61d0845	1707	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
dcoban	0:1a61c61d0845	1708	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
dcoban	0:1a61c61d0845	1709	lcp_sprotrej(pd, (u_char *)nb->payload, nb->len);
dcoban	0:1a61c61d0845	1710	}
dcoban	0:1a61c61d0845	1711	break;
dcoban	0:1a61c61d0845	1712	}
dcoban	0:1a61c61d0845	1713
dcoban	0:1a61c61d0845	1714	drop:
dcoban	0:1a61c61d0845	1715	LINK_STATS_INC(link.drop);
dcoban	0:1a61c61d0845	1716	snmp_inc_ifindiscards(&pppControl[pd].netif);
dcoban	0:1a61c61d0845	1717
dcoban	0:1a61c61d0845	1718	out:
dcoban	0:1a61c61d0845	1719	pbuf_free(nb);
dcoban	0:1a61c61d0845	1720	return;
dcoban	0:1a61c61d0845	1721	}
dcoban	0:1a61c61d0845	1722
dcoban	0:1a61c61d0845	1723	#if PPPOS_SUPPORT
dcoban	0:1a61c61d0845	1724	/*
dcoban	0:1a61c61d0845	1725	* Drop the input packet.
dcoban	0:1a61c61d0845	1726	*/
dcoban	0:1a61c61d0845	1727	static void
dcoban	0:1a61c61d0845	1728	pppDrop(PPPControlRx *pcrx)
dcoban	0:1a61c61d0845	1729	{
dcoban	0:1a61c61d0845	1730	if (pcrx->inHead != NULL) {
dcoban	0:1a61c61d0845	1731	#if 0
dcoban	0:1a61c61d0845	1732	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
dcoban	0:1a61c61d0845	1733	#endif
dcoban	0:1a61c61d0845	1734	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
dcoban	0:1a61c61d0845	1735	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
dcoban	0:1a61c61d0845	1736	pbuf_free(pcrx->inTail);
dcoban	0:1a61c61d0845	1737	}
dcoban	0:1a61c61d0845	1738	pbuf_free(pcrx->inHead);
dcoban	0:1a61c61d0845	1739	pcrx->inHead = NULL;
dcoban	0:1a61c61d0845	1740	pcrx->inTail = NULL;
dcoban	0:1a61c61d0845	1741	}
dcoban	0:1a61c61d0845	1742	#if VJ_SUPPORT
dcoban	0:1a61c61d0845	1743	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
dcoban	0:1a61c61d0845	1744	#endif /* VJ_SUPPORT */
dcoban	0:1a61c61d0845	1745
dcoban	0:1a61c61d0845	1746	LINK_STATS_INC(link.drop);
dcoban	0:1a61c61d0845	1747	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
dcoban	0:1a61c61d0845	1748	}
dcoban	0:1a61c61d0845	1749
dcoban	0:1a61c61d0845	1750	/** Pass received raw characters to PPPoS to be decoded. This function is
dcoban	0:1a61c61d0845	1751	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
dcoban	0:1a61c61d0845	1752	*
dcoban	0:1a61c61d0845	1753	* @param pd PPP descriptor index, returned by pppOpen()
dcoban	0:1a61c61d0845	1754	* @param data received data
dcoban	0:1a61c61d0845	1755	* @param len length of received data
dcoban	0:1a61c61d0845	1756	*/
dcoban	0:1a61c61d0845	1757	void
dcoban	0:1a61c61d0845	1758	pppos_input(int pd, u_char* data, int len)
dcoban	0:1a61c61d0845	1759	{
dcoban	0:1a61c61d0845	1760	pppInProc(&pppControl[pd].rx, data, len);
dcoban	0:1a61c61d0845	1761	}
dcoban	0:1a61c61d0845	1762
dcoban	0:1a61c61d0845	1763	/**
dcoban	0:1a61c61d0845	1764	* Process a received octet string.
dcoban	0:1a61c61d0845	1765	*/
dcoban	0:1a61c61d0845	1766	static void
dcoban	0:1a61c61d0845	1767	pppInProc(PPPControlRx pcrx, u_char s, int l)
dcoban	0:1a61c61d0845	1768	{
dcoban	0:1a61c61d0845	1769	struct pbuf *nextNBuf;
dcoban	0:1a61c61d0845	1770	u_char curChar;
dcoban	0:1a61c61d0845	1771	u_char escaped;
dcoban	0:1a61c61d0845	1772	SYS_ARCH_DECL_PROTECT(lev);
dcoban	0:1a61c61d0845	1773
dcoban	0:1a61c61d0845	1774	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
dcoban	0:1a61c61d0845	1775	while (l-- > 0) {
dcoban	0:1a61c61d0845	1776	curChar = *s++;
dcoban	0:1a61c61d0845	1777
dcoban	0:1a61c61d0845	1778	SYS_ARCH_PROTECT(lev);
dcoban	0:1a61c61d0845	1779	escaped = ESCAPE_P(pcrx->inACCM, curChar);
dcoban	0:1a61c61d0845	1780	SYS_ARCH_UNPROTECT(lev);
dcoban	0:1a61c61d0845	1781	/* Handle special characters. */
dcoban	0:1a61c61d0845	1782	if (escaped) {
dcoban	0:1a61c61d0845	1783	/* Check for escape sequences. */
dcoban	0:1a61c61d0845	1784	/* XXX Note that this does not handle an escaped 0x5d character which
dcoban	0:1a61c61d0845	1785	* would appear as an escape character. Since this is an ASCII ']'
dcoban	0:1a61c61d0845	1786	* and there is no reason that I know of to escape it, I won't complicate
dcoban	0:1a61c61d0845	1787	* the code to handle this case. GLL */
dcoban	0:1a61c61d0845	1788	if (curChar == PPP_ESCAPE) {
dcoban	0:1a61c61d0845	1789	pcrx->inEscaped = 1;
dcoban	0:1a61c61d0845	1790	/* Check for the flag character. */
dcoban	0:1a61c61d0845	1791	} else if (curChar == PPP_FLAG) {
dcoban	0:1a61c61d0845	1792	/* If this is just an extra flag character, ignore it. */
dcoban	0:1a61c61d0845	1793	if (pcrx->inState <= PDADDRESS) {
dcoban	0:1a61c61d0845	1794	/* ignore it */;
dcoban	0:1a61c61d0845	1795	/* If we haven't received the packet header, drop what has come in. */
dcoban	0:1a61c61d0845	1796	} else if (pcrx->inState < PDDATA) {
dcoban	0:1a61c61d0845	1797	PPPDEBUG(LOG_WARNING,
dcoban	0:1a61c61d0845	1798	("pppInProc[%d]: Dropping incomplete packet %d\n",
dcoban	0:1a61c61d0845	1799	pcrx->pd, pcrx->inState));
dcoban	0:1a61c61d0845	1800	LINK_STATS_INC(link.lenerr);
dcoban	0:1a61c61d0845	1801	pppDrop(pcrx);
dcoban	0:1a61c61d0845	1802	/* If the fcs is invalid, drop the packet. */
dcoban	0:1a61c61d0845	1803	} else if (pcrx->inFCS != PPP_GOODFCS) {
dcoban	0:1a61c61d0845	1804	PPPDEBUG(LOG_INFO,
dcoban	0:1a61c61d0845	1805	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
dcoban	0:1a61c61d0845	1806	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
dcoban	0:1a61c61d0845	1807	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
dcoban	0:1a61c61d0845	1808	LINK_STATS_INC(link.chkerr);
dcoban	0:1a61c61d0845	1809	pppDrop(pcrx);
dcoban	0:1a61c61d0845	1810	/* Otherwise it's a good packet so pass it on. */
dcoban	0:1a61c61d0845	1811	} else {
dcoban	0:1a61c61d0845	1812	/* Trim off the checksum. */
dcoban	0:1a61c61d0845	1813	if(pcrx->inTail->len >= 2) {
dcoban	0:1a61c61d0845	1814	pcrx->inTail->len -= 2;
dcoban	0:1a61c61d0845	1815
dcoban	0:1a61c61d0845	1816	pcrx->inTail->tot_len = pcrx->inTail->len;
dcoban	0:1a61c61d0845	1817	if (pcrx->inTail != pcrx->inHead) {
dcoban	0:1a61c61d0845	1818	pbuf_cat(pcrx->inHead, pcrx->inTail);
dcoban	0:1a61c61d0845	1819	}
dcoban	0:1a61c61d0845	1820	} else {
dcoban	0:1a61c61d0845	1821	pcrx->inTail->tot_len = pcrx->inTail->len;
dcoban	0:1a61c61d0845	1822	if (pcrx->inTail != pcrx->inHead) {
dcoban	0:1a61c61d0845	1823	pbuf_cat(pcrx->inHead, pcrx->inTail);
dcoban	0:1a61c61d0845	1824	}
dcoban	0:1a61c61d0845	1825
dcoban	0:1a61c61d0845	1826	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
dcoban	0:1a61c61d0845	1827	}
dcoban	0:1a61c61d0845	1828
dcoban	0:1a61c61d0845	1829	/* Dispatch the packet thereby consuming it. */
dcoban	0:1a61c61d0845	1830	#if PPP_INPROC_MULTITHREADED
dcoban	0:1a61c61d0845	1831	if(tcpip_callback_with_block(pppInput, pcrx->inHead, 0) != ERR_OK) {
dcoban	0:1a61c61d0845	1832	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
dcoban	0:1a61c61d0845	1833	pbuf_free(pcrx->inHead);
dcoban	0:1a61c61d0845	1834	LINK_STATS_INC(link.drop);
dcoban	0:1a61c61d0845	1835	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
dcoban	0:1a61c61d0845	1836	}
dcoban	0:1a61c61d0845	1837	#else /* PPP_INPROC_MULTITHREADED */
dcoban	0:1a61c61d0845	1838	pppInput(pcrx->inHead);
dcoban	0:1a61c61d0845	1839	#endif /* PPP_INPROC_MULTITHREADED */
dcoban	0:1a61c61d0845	1840	pcrx->inHead = NULL;
dcoban	0:1a61c61d0845	1841	pcrx->inTail = NULL;
dcoban	0:1a61c61d0845	1842	}
dcoban	0:1a61c61d0845	1843
dcoban	0:1a61c61d0845	1844	/* Prepare for a new packet. */
dcoban	0:1a61c61d0845	1845	pcrx->inFCS = PPP_INITFCS;
dcoban	0:1a61c61d0845	1846	pcrx->inState = PDADDRESS;
dcoban	0:1a61c61d0845	1847	pcrx->inEscaped = 0;
dcoban	0:1a61c61d0845	1848	/* Other characters are usually control characters that may have
dcoban	0:1a61c61d0845	1849	* been inserted by the physical layer so here we just drop them. */
dcoban	0:1a61c61d0845	1850	} else {
dcoban	0:1a61c61d0845	1851	PPPDEBUG(LOG_WARNING,
dcoban	0:1a61c61d0845	1852	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
dcoban	0:1a61c61d0845	1853	}
dcoban	0:1a61c61d0845	1854	/* Process other characters. */
dcoban	0:1a61c61d0845	1855	} else {
dcoban	0:1a61c61d0845	1856	/* Unencode escaped characters. */
dcoban	0:1a61c61d0845	1857	if (pcrx->inEscaped) {
dcoban	0:1a61c61d0845	1858	pcrx->inEscaped = 0;
dcoban	0:1a61c61d0845	1859	curChar ^= PPP_TRANS;
dcoban	0:1a61c61d0845	1860	}
dcoban	0:1a61c61d0845	1861
dcoban	0:1a61c61d0845	1862	/* Process character relative to current state. */
dcoban	0:1a61c61d0845	1863	switch(pcrx->inState) {
dcoban	0:1a61c61d0845	1864	case PDIDLE: /* Idle state - waiting. */
dcoban	0:1a61c61d0845	1865	/* Drop the character if it's not 0xff
dcoban	0:1a61c61d0845	1866	* we would have processed a flag character above. */
dcoban	0:1a61c61d0845	1867	if (curChar != PPP_ALLSTATIONS) {
dcoban	0:1a61c61d0845	1868	break;
dcoban	0:1a61c61d0845	1869	}
dcoban	0:1a61c61d0845	1870
dcoban	0:1a61c61d0845	1871	/* Fall through */
dcoban	0:1a61c61d0845	1872	case PDSTART: /* Process start flag. */
dcoban	0:1a61c61d0845	1873	/* Prepare for a new packet. */
dcoban	0:1a61c61d0845	1874	pcrx->inFCS = PPP_INITFCS;
dcoban	0:1a61c61d0845	1875
dcoban	0:1a61c61d0845	1876	/* Fall through */
dcoban	0:1a61c61d0845	1877	case PDADDRESS: /* Process address field. */
dcoban	0:1a61c61d0845	1878	if (curChar == PPP_ALLSTATIONS) {
dcoban	0:1a61c61d0845	1879	pcrx->inState = PDCONTROL;
dcoban	0:1a61c61d0845	1880	break;
dcoban	0:1a61c61d0845	1881	}
dcoban	0:1a61c61d0845	1882	/* Else assume compressed address and control fields so
dcoban	0:1a61c61d0845	1883	* fall through to get the protocol... */
dcoban	0:1a61c61d0845	1884	case PDCONTROL: /* Process control field. */
dcoban	0:1a61c61d0845	1885	/* If we don't get a valid control code, restart. */
dcoban	0:1a61c61d0845	1886	if (curChar == PPP_UI) {
dcoban	0:1a61c61d0845	1887	pcrx->inState = PDPROTOCOL1;
dcoban	0:1a61c61d0845	1888	break;
dcoban	0:1a61c61d0845	1889	}
dcoban	0:1a61c61d0845	1890	#if 0
dcoban	0:1a61c61d0845	1891	else {
dcoban	0:1a61c61d0845	1892	PPPDEBUG(LOG_WARNING,
dcoban	0:1a61c61d0845	1893	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
dcoban	0:1a61c61d0845	1894	pcrx->inState = PDSTART;
dcoban	0:1a61c61d0845	1895	}
dcoban	0:1a61c61d0845	1896	#endif
dcoban	0:1a61c61d0845	1897	case PDPROTOCOL1: /* Process protocol field 1. */
dcoban	0:1a61c61d0845	1898	/* If the lower bit is set, this is the end of the protocol
dcoban	0:1a61c61d0845	1899	* field. */
dcoban	0:1a61c61d0845	1900	if (curChar & 1) {
dcoban	0:1a61c61d0845	1901	pcrx->inProtocol = curChar;
dcoban	0:1a61c61d0845	1902	pcrx->inState = PDDATA;
dcoban	0:1a61c61d0845	1903	} else {
dcoban	0:1a61c61d0845	1904	pcrx->inProtocol = (u_int)curChar << 8;
dcoban	0:1a61c61d0845	1905	pcrx->inState = PDPROTOCOL2;
dcoban	0:1a61c61d0845	1906	}
dcoban	0:1a61c61d0845	1907	break;
dcoban	0:1a61c61d0845	1908	case PDPROTOCOL2: /* Process protocol field 2. */
dcoban	0:1a61c61d0845	1909	pcrx->inProtocol \|= curChar;
dcoban	0:1a61c61d0845	1910	pcrx->inState = PDDATA;
dcoban	0:1a61c61d0845	1911	break;
dcoban	0:1a61c61d0845	1912	case PDDATA: /* Process data byte. */
dcoban	0:1a61c61d0845	1913	/* Make space to receive processed data. */
dcoban	0:1a61c61d0845	1914	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
dcoban	0:1a61c61d0845	1915	if(pcrx->inTail) {
dcoban	0:1a61c61d0845	1916	pcrx->inTail->tot_len = pcrx->inTail->len;
dcoban	0:1a61c61d0845	1917	if (pcrx->inTail != pcrx->inHead) {
dcoban	0:1a61c61d0845	1918	pbuf_cat(pcrx->inHead, pcrx->inTail);
dcoban	0:1a61c61d0845	1919	}
dcoban	0:1a61c61d0845	1920	}
dcoban	0:1a61c61d0845	1921	/* If we haven't started a packet, we need a packet header. */
dcoban	0:1a61c61d0845	1922	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
dcoban	0:1a61c61d0845	1923	if (nextNBuf == NULL) {
dcoban	0:1a61c61d0845	1924	/* No free buffers. Drop the input packet and let the
dcoban	0:1a61c61d0845	1925	* higher layers deal with it. Continue processing
dcoban	0:1a61c61d0845	1926	* the received pbuf chain in case a new packet starts. */
dcoban	0:1a61c61d0845	1927	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
dcoban	0:1a61c61d0845	1928	LINK_STATS_INC(link.memerr);
dcoban	0:1a61c61d0845	1929	pppDrop(pcrx);
dcoban	0:1a61c61d0845	1930	pcrx->inState = PDSTART; /* Wait for flag sequence. */
dcoban	0:1a61c61d0845	1931	break;
dcoban	0:1a61c61d0845	1932	}
dcoban	0:1a61c61d0845	1933	if (pcrx->inHead == NULL) {
dcoban	0:1a61c61d0845	1934	struct pppInputHeader pih = (struct pppInputHeader )nextNBuf->payload;
dcoban	0:1a61c61d0845	1935
dcoban	0:1a61c61d0845	1936	pih->unit = pcrx->pd;
dcoban	0:1a61c61d0845	1937	pih->proto = pcrx->inProtocol;
dcoban	0:1a61c61d0845	1938
dcoban	0:1a61c61d0845	1939	nextNBuf->len += sizeof(*pih);
dcoban	0:1a61c61d0845	1940
dcoban	0:1a61c61d0845	1941	pcrx->inHead = nextNBuf;
dcoban	0:1a61c61d0845	1942	}
dcoban	0:1a61c61d0845	1943	pcrx->inTail = nextNBuf;
dcoban	0:1a61c61d0845	1944	}
dcoban	0:1a61c61d0845	1945	/* Load character into buffer. */
dcoban	0:1a61c61d0845	1946	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
dcoban	0:1a61c61d0845	1947	break;
dcoban	0:1a61c61d0845	1948	}
dcoban	0:1a61c61d0845	1949
dcoban	0:1a61c61d0845	1950	/* update the frame check sequence number. */
dcoban	0:1a61c61d0845	1951	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
dcoban	0:1a61c61d0845	1952	}
dcoban	0:1a61c61d0845	1953	} /* while (l-- > 0), all bytes processed */
dcoban	0:1a61c61d0845	1954
dcoban	0:1a61c61d0845	1955	avRandomize();
dcoban	0:1a61c61d0845	1956	}
dcoban	0:1a61c61d0845	1957	#endif /* PPPOS_SUPPORT */
dcoban	0:1a61c61d0845	1958
dcoban	0:1a61c61d0845	1959	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	1960	void
dcoban	0:1a61c61d0845	1961	pppInProcOverEthernet(int pd, struct pbuf *pb)
dcoban	0:1a61c61d0845	1962	{
dcoban	0:1a61c61d0845	1963	struct pppInputHeader *pih;
dcoban	0:1a61c61d0845	1964	u16_t inProtocol;
dcoban	0:1a61c61d0845	1965
dcoban	0:1a61c61d0845	1966	if(pb->len < sizeof(inProtocol)) {
dcoban	0:1a61c61d0845	1967	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
dcoban	0:1a61c61d0845	1968	goto drop;
dcoban	0:1a61c61d0845	1969	}
dcoban	0:1a61c61d0845	1970
dcoban	0:1a61c61d0845	1971	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
dcoban	0:1a61c61d0845	1972
dcoban	0:1a61c61d0845	1973	/* make room for pppInputHeader - should not fail */
dcoban	0:1a61c61d0845	1974	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
dcoban	0:1a61c61d0845	1975	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
dcoban	0:1a61c61d0845	1976	goto drop;
dcoban	0:1a61c61d0845	1977	}
dcoban	0:1a61c61d0845	1978
dcoban	0:1a61c61d0845	1979	pih = pb->payload;
dcoban	0:1a61c61d0845	1980
dcoban	0:1a61c61d0845	1981	pih->unit = pd;
dcoban	0:1a61c61d0845	1982	pih->proto = inProtocol;
dcoban	0:1a61c61d0845	1983
dcoban	0:1a61c61d0845	1984	/* Dispatch the packet thereby consuming it. */
dcoban	0:1a61c61d0845	1985	pppInput(pb);
dcoban	0:1a61c61d0845	1986	return;
dcoban	0:1a61c61d0845	1987
dcoban	0:1a61c61d0845	1988	drop:
dcoban	0:1a61c61d0845	1989	LINK_STATS_INC(link.drop);
dcoban	0:1a61c61d0845	1990	snmp_inc_ifindiscards(&pppControl[pd].netif);
dcoban	0:1a61c61d0845	1991	pbuf_free(pb);
dcoban	0:1a61c61d0845	1992	return;
dcoban	0:1a61c61d0845	1993	}
dcoban	0:1a61c61d0845	1994	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	1995
dcoban	0:1a61c61d0845	1996	#if LWIP_NETIF_STATUS_CALLBACK
dcoban	0:1a61c61d0845	1997	/** Set the status callback of a PPP's netif
dcoban	0:1a61c61d0845	1998	*
dcoban	0:1a61c61d0845	1999	* @param pd The PPP descriptor returned by pppOpen()
dcoban	0:1a61c61d0845	2000	* @param status_callback pointer to the status callback function
dcoban	0:1a61c61d0845	2001	*
dcoban	0:1a61c61d0845	2002	* @see netif_set_status_callback
dcoban	0:1a61c61d0845	2003	*/
dcoban	0:1a61c61d0845	2004	void
dcoban	0:1a61c61d0845	2005	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
dcoban	0:1a61c61d0845	2006	{
dcoban	0:1a61c61d0845	2007	netif_set_status_callback(&pppControl[pd].netif, status_callback);
dcoban	0:1a61c61d0845	2008	}
dcoban	0:1a61c61d0845	2009	#endif /* LWIP_NETIF_STATUS_CALLBACK */
dcoban	0:1a61c61d0845	2010
dcoban	0:1a61c61d0845	2011	#if LWIP_NETIF_LINK_CALLBACK
dcoban	0:1a61c61d0845	2012	/** Set the link callback of a PPP's netif
dcoban	0:1a61c61d0845	2013	*
dcoban	0:1a61c61d0845	2014	* @param pd The PPP descriptor returned by pppOpen()
dcoban	0:1a61c61d0845	2015	* @param link_callback pointer to the link callback function
dcoban	0:1a61c61d0845	2016	*
dcoban	0:1a61c61d0845	2017	* @see netif_set_link_callback
dcoban	0:1a61c61d0845	2018	*/
dcoban	0:1a61c61d0845	2019	void
dcoban	0:1a61c61d0845	2020	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
dcoban	0:1a61c61d0845	2021	{
dcoban	0:1a61c61d0845	2022	netif_set_link_callback(&pppControl[pd].netif, link_callback);
dcoban	0:1a61c61d0845	2023	}
dcoban	0:1a61c61d0845	2024	#endif /* LWIP_NETIF_LINK_CALLBACK */
dcoban	0:1a61c61d0845	2025
dcoban	0:1a61c61d0845	2026	#endif /* PPP_SUPPORT */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	03 Apr 2012
Imports:	2
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	4
Followers:	1

NetStack/lwip/netif/ppp/ppp.c@0:1a61c61d0845, 2012-04-03 (annotated)

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