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NetServices/lwip/netif/ppp/ppp.c@0:4edb816d21e1, 2015-10-16 (annotated)

Committer:: ICTFBI
Date:: Fri Oct 16 14:28:26 2015 +0000
Revision:: 0:4edb816d21e1

Pre-update 16-10-15

Who changed what in which revision?

User	Revision	Line number	New contents of line
ICTFBI	0:4edb816d21e1	1	/*****************************************************************************
ICTFBI	0:4edb816d21e1	2	* ppp.c - Network Point to Point Protocol program file.
ICTFBI	0:4edb816d21e1	3	*
ICTFBI	0:4edb816d21e1	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
ICTFBI	0:4edb816d21e1	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
ICTFBI	0:4edb816d21e1	6	*
ICTFBI	0:4edb816d21e1	7	* The authors hereby grant permission to use, copy, modify, distribute,
ICTFBI	0:4edb816d21e1	8	* and license this software and its documentation for any purpose, provided
ICTFBI	0:4edb816d21e1	9	* that existing copyright notices are retained in all copies and that this
ICTFBI	0:4edb816d21e1	10	* notice and the following disclaimer are included verbatim in any
ICTFBI	0:4edb816d21e1	11	* distributions. No written agreement, license, or royalty fee is required
ICTFBI	0:4edb816d21e1	12	* for any of the authorized uses.
ICTFBI	0:4edb816d21e1	13	*
ICTFBI	0:4edb816d21e1	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
ICTFBI	0:4edb816d21e1	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
ICTFBI	0:4edb816d21e1	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
ICTFBI	0:4edb816d21e1	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
ICTFBI	0:4edb816d21e1	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
ICTFBI	0:4edb816d21e1	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
ICTFBI	0:4edb816d21e1	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
ICTFBI	0:4edb816d21e1	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
ICTFBI	0:4edb816d21e1	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
ICTFBI	0:4edb816d21e1	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ICTFBI	0:4edb816d21e1	24	*
ICTFBI	0:4edb816d21e1	25	******************************************************************************
ICTFBI	0:4edb816d21e1	26	* REVISION HISTORY
ICTFBI	0:4edb816d21e1	27	*
ICTFBI	0:4edb816d21e1	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
ICTFBI	0:4edb816d21e1	29	* Ported to lwIP.
ICTFBI	0:4edb816d21e1	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
ICTFBI	0:4edb816d21e1	31	* Original.
ICTFBI	0:4edb816d21e1	32	*****************************************************************************/
ICTFBI	0:4edb816d21e1	33
ICTFBI	0:4edb816d21e1	34	/*
ICTFBI	0:4edb816d21e1	35	* ppp_defs.h - PPP definitions.
ICTFBI	0:4edb816d21e1	36	*
ICTFBI	0:4edb816d21e1	37	* if_pppvar.h - private structures and declarations for PPP.
ICTFBI	0:4edb816d21e1	38	*
ICTFBI	0:4edb816d21e1	39	* Copyright (c) 1994 The Australian National University.
ICTFBI	0:4edb816d21e1	40	* All rights reserved.
ICTFBI	0:4edb816d21e1	41	*
ICTFBI	0:4edb816d21e1	42	* Permission to use, copy, modify, and distribute this software and its
ICTFBI	0:4edb816d21e1	43	* documentation is hereby granted, provided that the above copyright
ICTFBI	0:4edb816d21e1	44	* notice appears in all copies. This software is provided without any
ICTFBI	0:4edb816d21e1	45	* warranty, express or implied. The Australian National University
ICTFBI	0:4edb816d21e1	46	* makes no representations about the suitability of this software for
ICTFBI	0:4edb816d21e1	47	* any purpose.
ICTFBI	0:4edb816d21e1	48	*
ICTFBI	0:4edb816d21e1	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
ICTFBI	0:4edb816d21e1	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
ICTFBI	0:4edb816d21e1	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
ICTFBI	0:4edb816d21e1	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
ICTFBI	0:4edb816d21e1	53	* OF SUCH DAMAGE.
ICTFBI	0:4edb816d21e1	54	*
ICTFBI	0:4edb816d21e1	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
ICTFBI	0:4edb816d21e1	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
ICTFBI	0:4edb816d21e1	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
ICTFBI	0:4edb816d21e1	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
ICTFBI	0:4edb816d21e1	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
ICTFBI	0:4edb816d21e1	60	* OR MODIFICATIONS.
ICTFBI	0:4edb816d21e1	61	*/
ICTFBI	0:4edb816d21e1	62
ICTFBI	0:4edb816d21e1	63	/*
ICTFBI	0:4edb816d21e1	64	* if_ppp.h - Point-to-Point Protocol definitions.
ICTFBI	0:4edb816d21e1	65	*
ICTFBI	0:4edb816d21e1	66	* Copyright (c) 1989 Carnegie Mellon University.
ICTFBI	0:4edb816d21e1	67	* All rights reserved.
ICTFBI	0:4edb816d21e1	68	*
ICTFBI	0:4edb816d21e1	69	* Redistribution and use in source and binary forms are permitted
ICTFBI	0:4edb816d21e1	70	* provided that the above copyright notice and this paragraph are
ICTFBI	0:4edb816d21e1	71	* duplicated in all such forms and that any documentation,
ICTFBI	0:4edb816d21e1	72	* advertising materials, and other materials related to such
ICTFBI	0:4edb816d21e1	73	* distribution and use acknowledge that the software was developed
ICTFBI	0:4edb816d21e1	74	* by Carnegie Mellon University. The name of the
ICTFBI	0:4edb816d21e1	75	* University may not be used to endorse or promote products derived
ICTFBI	0:4edb816d21e1	76	* from this software without specific prior written permission.
ICTFBI	0:4edb816d21e1	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
ICTFBI	0:4edb816d21e1	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
ICTFBI	0:4edb816d21e1	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
ICTFBI	0:4edb816d21e1	80	*/
ICTFBI	0:4edb816d21e1	81
ICTFBI	0:4edb816d21e1	82	#include "lwip/opt.h"
ICTFBI	0:4edb816d21e1	83
ICTFBI	0:4edb816d21e1	84	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
ICTFBI	0:4edb816d21e1	85
ICTFBI	0:4edb816d21e1	86	#include "lwip/ip.h" /* for ip_input() */
ICTFBI	0:4edb816d21e1	87
ICTFBI	0:4edb816d21e1	88	#include "ppp.h"
ICTFBI	0:4edb816d21e1	89	#include "pppdebug.h"
ICTFBI	0:4edb816d21e1	90
ICTFBI	0:4edb816d21e1	91	#include "randm.h"
ICTFBI	0:4edb816d21e1	92	#include "fsm.h"
ICTFBI	0:4edb816d21e1	93	#if PAP_SUPPORT
ICTFBI	0:4edb816d21e1	94	#include "pap.h"
ICTFBI	0:4edb816d21e1	95	#endif /* PAP_SUPPORT */
ICTFBI	0:4edb816d21e1	96	#if CHAP_SUPPORT
ICTFBI	0:4edb816d21e1	97	#include "chap.h"
ICTFBI	0:4edb816d21e1	98	#endif /* CHAP_SUPPORT */
ICTFBI	0:4edb816d21e1	99	#include "ipcp.h"
ICTFBI	0:4edb816d21e1	100	#include "lcp.h"
ICTFBI	0:4edb816d21e1	101	#include "magic.h"
ICTFBI	0:4edb816d21e1	102	#include "auth.h"
ICTFBI	0:4edb816d21e1	103	#if VJ_SUPPORT
ICTFBI	0:4edb816d21e1	104	#include "vj.h"
ICTFBI	0:4edb816d21e1	105	#endif /* VJ_SUPPORT */
ICTFBI	0:4edb816d21e1	106	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	107	#include "netif/ppp_oe.h"
ICTFBI	0:4edb816d21e1	108	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	109
ICTFBI	0:4edb816d21e1	110	#include "lwip/tcpip.h"
ICTFBI	0:4edb816d21e1	111	#include "lwip/api.h"
ICTFBI	0:4edb816d21e1	112	#include "lwip/snmp.h"
ICTFBI	0:4edb816d21e1	113
ICTFBI	0:4edb816d21e1	114	#include <string.h>
ICTFBI	0:4edb816d21e1	115
ICTFBI	0:4edb816d21e1	116	/*************************/
ICTFBI	0:4edb816d21e1	117	/* LOCAL DEFINITIONS */
ICTFBI	0:4edb816d21e1	118	/*************************/
ICTFBI	0:4edb816d21e1	119
ICTFBI	0:4edb816d21e1	120	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
ICTFBI	0:4edb816d21e1	121	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
ICTFBI	0:4edb816d21e1	122	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
ICTFBI	0:4edb816d21e1	123	*/
ICTFBI	0:4edb816d21e1	124	#ifndef PPP_INPROC_MULTITHREADED
ICTFBI	0:4edb816d21e1	125	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
ICTFBI	0:4edb816d21e1	126	#endif
ICTFBI	0:4edb816d21e1	127
ICTFBI	0:4edb816d21e1	128	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
ICTFBI	0:4edb816d21e1	129	* Default is 0: call pppos_input() for received raw characters, charcater
ICTFBI	0:4edb816d21e1	130	* reception is up to the port */
ICTFBI	0:4edb816d21e1	131	#ifndef PPP_INPROC_OWNTHREAD
ICTFBI	0:4edb816d21e1	132	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
ICTFBI	0:4edb816d21e1	133	#endif
ICTFBI	0:4edb816d21e1	134
ICTFBI	0:4edb816d21e1	135	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
ICTFBI	0:4edb816d21e1	136	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
ICTFBI	0:4edb816d21e1	137	#endif
ICTFBI	0:4edb816d21e1	138
ICTFBI	0:4edb816d21e1	139	/*
ICTFBI	0:4edb816d21e1	140	* The basic PPP frame.
ICTFBI	0:4edb816d21e1	141	*/
ICTFBI	0:4edb816d21e1	142	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
ICTFBI	0:4edb816d21e1	143	#define PPP_CONTROL(p) (((u_char *)(p))[1])
ICTFBI	0:4edb816d21e1	144	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
ICTFBI	0:4edb816d21e1	145
ICTFBI	0:4edb816d21e1	146	/* PPP packet parser states. Current state indicates operation yet to be
ICTFBI	0:4edb816d21e1	147	* completed. */
ICTFBI	0:4edb816d21e1	148	typedef enum {
ICTFBI	0:4edb816d21e1	149	PDIDLE = 0, /* Idle state - waiting. */
ICTFBI	0:4edb816d21e1	150	PDSTART, /* Process start flag. */
ICTFBI	0:4edb816d21e1	151	PDADDRESS, /* Process address field. */
ICTFBI	0:4edb816d21e1	152	PDCONTROL, /* Process control field. */
ICTFBI	0:4edb816d21e1	153	PDPROTOCOL1, /* Process protocol field 1. */
ICTFBI	0:4edb816d21e1	154	PDPROTOCOL2, /* Process protocol field 2. */
ICTFBI	0:4edb816d21e1	155	PDDATA /* Process data byte. */
ICTFBI	0:4edb816d21e1	156	} PPPDevStates;
ICTFBI	0:4edb816d21e1	157
ICTFBI	0:4edb816d21e1	158	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
ICTFBI	0:4edb816d21e1	159
ICTFBI	0:4edb816d21e1	160	/************************/
ICTFBI	0:4edb816d21e1	161	/* LOCAL DATA TYPES */
ICTFBI	0:4edb816d21e1	162	/************************/
ICTFBI	0:4edb816d21e1	163
ICTFBI	0:4edb816d21e1	164	/** RX buffer size: this may be configured smaller! */
ICTFBI	0:4edb816d21e1	165	#ifndef PPPOS_RX_BUFSIZE
ICTFBI	0:4edb816d21e1	166	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
ICTFBI	0:4edb816d21e1	167	#endif
ICTFBI	0:4edb816d21e1	168
ICTFBI	0:4edb816d21e1	169	typedef struct PPPControlRx_s {
ICTFBI	0:4edb816d21e1	170	/** unit number / ppp descriptor */
ICTFBI	0:4edb816d21e1	171	int pd;
ICTFBI	0:4edb816d21e1	172	/** the rx file descriptor */
ICTFBI	0:4edb816d21e1	173	sio_fd_t fd;
ICTFBI	0:4edb816d21e1	174	/** receive buffer - encoded data is stored here */
ICTFBI	0:4edb816d21e1	175	u_char rxbuf[PPPOS_RX_BUFSIZE];
ICTFBI	0:4edb816d21e1	176
ICTFBI	0:4edb816d21e1	177	/* The input packet. */
ICTFBI	0:4edb816d21e1	178	struct pbuf inHead, inTail;
ICTFBI	0:4edb816d21e1	179
ICTFBI	0:4edb816d21e1	180	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	181	u16_t inProtocol; /* The input protocol code. */
ICTFBI	0:4edb816d21e1	182	u16_t inFCS; /* Input Frame Check Sequence value. */
ICTFBI	0:4edb816d21e1	183	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	184	PPPDevStates inState; /* The input process state. */
ICTFBI	0:4edb816d21e1	185	char inEscaped; /* Escape next character. */
ICTFBI	0:4edb816d21e1	186	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
ICTFBI	0:4edb816d21e1	187	} PPPControlRx;
ICTFBI	0:4edb816d21e1	188
ICTFBI	0:4edb816d21e1	189	/*
ICTFBI	0:4edb816d21e1	190	* PPP interface control block.
ICTFBI	0:4edb816d21e1	191	*/
ICTFBI	0:4edb816d21e1	192	typedef struct PPPControl_s {
ICTFBI	0:4edb816d21e1	193	PPPControlRx rx;
ICTFBI	0:4edb816d21e1	194	char openFlag; /* True when in use. */
ICTFBI	0:4edb816d21e1	195	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	196	struct netif *ethif;
ICTFBI	0:4edb816d21e1	197	struct pppoe_softc *pppoe_sc;
ICTFBI	0:4edb816d21e1	198	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	199	int if_up; /* True when the interface is up. */
ICTFBI	0:4edb816d21e1	200	int errCode; /* Code indicating why interface is down. */
ICTFBI	0:4edb816d21e1	201	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	202	sio_fd_t fd; /* File device ID of port. */
ICTFBI	0:4edb816d21e1	203	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	204	u16_t mtu; /* Peer's mru */
ICTFBI	0:4edb816d21e1	205	int pcomp; /* Does peer accept protocol compression? */
ICTFBI	0:4edb816d21e1	206	int accomp; /* Does peer accept addr/ctl compression? */
ICTFBI	0:4edb816d21e1	207	u_long lastXMit; /* Time of last transmission. */
ICTFBI	0:4edb816d21e1	208	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
ICTFBI	0:4edb816d21e1	209	#if PPPOS_SUPPORT && VJ_SUPPORT
ICTFBI	0:4edb816d21e1	210	int vjEnabled; /* Flag indicating VJ compression enabled. */
ICTFBI	0:4edb816d21e1	211	struct vjcompress vjComp; /* Van Jacobson compression header. */
ICTFBI	0:4edb816d21e1	212	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
ICTFBI	0:4edb816d21e1	213
ICTFBI	0:4edb816d21e1	214	struct netif netif;
ICTFBI	0:4edb816d21e1	215
ICTFBI	0:4edb816d21e1	216	struct ppp_addrs addrs;
ICTFBI	0:4edb816d21e1	217
ICTFBI	0:4edb816d21e1	218	void (linkStatusCB)(void ctx, int errCode, void *arg);
ICTFBI	0:4edb816d21e1	219	void *linkStatusCtx;
ICTFBI	0:4edb816d21e1	220
ICTFBI	0:4edb816d21e1	221	} PPPControl;
ICTFBI	0:4edb816d21e1	222
ICTFBI	0:4edb816d21e1	223
ICTFBI	0:4edb816d21e1	224	/*
ICTFBI	0:4edb816d21e1	225	* Ioctl definitions.
ICTFBI	0:4edb816d21e1	226	*/
ICTFBI	0:4edb816d21e1	227
ICTFBI	0:4edb816d21e1	228	struct npioctl {
ICTFBI	0:4edb816d21e1	229	int protocol; /* PPP procotol, e.g. PPP_IP */
ICTFBI	0:4edb816d21e1	230	enum NPmode mode;
ICTFBI	0:4edb816d21e1	231	};
ICTFBI	0:4edb816d21e1	232
ICTFBI	0:4edb816d21e1	233
ICTFBI	0:4edb816d21e1	234
ICTFBI	0:4edb816d21e1	235	/***********************************/
ICTFBI	0:4edb816d21e1	236	/* LOCAL FUNCTION DECLARATIONS */
ICTFBI	0:4edb816d21e1	237	/***********************************/
ICTFBI	0:4edb816d21e1	238	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	239	#if PPP_INPROC_OWNTHREAD
ICTFBI	0:4edb816d21e1	240	static void pppInputThread(void *arg);
ICTFBI	0:4edb816d21e1	241	#endif /* PPP_INPROC_OWNTHREAD */
ICTFBI	0:4edb816d21e1	242	static void pppDrop(PPPControlRx *pcrx);
ICTFBI	0:4edb816d21e1	243	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
ICTFBI	0:4edb816d21e1	244	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	245
ICTFBI	0:4edb816d21e1	246
ICTFBI	0:4edb816d21e1	247	/******************************/
ICTFBI	0:4edb816d21e1	248	/* PUBLIC DATA STRUCTURES */
ICTFBI	0:4edb816d21e1	249	/******************************/
ICTFBI	0:4edb816d21e1	250	u_long subnetMask;
ICTFBI	0:4edb816d21e1	251
ICTFBI	0:4edb816d21e1	252	static PPPControl pppControl[NUM_PPP] MEM_POSITION; /* The PPP interface control blocks. */
ICTFBI	0:4edb816d21e1	253
ICTFBI	0:4edb816d21e1	254	/*
ICTFBI	0:4edb816d21e1	255	* PPP Data Link Layer "protocol" table.
ICTFBI	0:4edb816d21e1	256	* One entry per supported protocol.
ICTFBI	0:4edb816d21e1	257	* The last entry must be NULL.
ICTFBI	0:4edb816d21e1	258	*/
ICTFBI	0:4edb816d21e1	259	struct protent *ppp_protocols[] = {
ICTFBI	0:4edb816d21e1	260	&lcp_protent,
ICTFBI	0:4edb816d21e1	261	#if PAP_SUPPORT
ICTFBI	0:4edb816d21e1	262	&pap_protent,
ICTFBI	0:4edb816d21e1	263	#endif /* PAP_SUPPORT */
ICTFBI	0:4edb816d21e1	264	#if CHAP_SUPPORT
ICTFBI	0:4edb816d21e1	265	&chap_protent,
ICTFBI	0:4edb816d21e1	266	#endif /* CHAP_SUPPORT */
ICTFBI	0:4edb816d21e1	267	#if CBCP_SUPPORT
ICTFBI	0:4edb816d21e1	268	&cbcp_protent,
ICTFBI	0:4edb816d21e1	269	#endif /* CBCP_SUPPORT */
ICTFBI	0:4edb816d21e1	270	&ipcp_protent,
ICTFBI	0:4edb816d21e1	271	#if CCP_SUPPORT
ICTFBI	0:4edb816d21e1	272	&ccp_protent,
ICTFBI	0:4edb816d21e1	273	#endif /* CCP_SUPPORT */
ICTFBI	0:4edb816d21e1	274	NULL
ICTFBI	0:4edb816d21e1	275	};
ICTFBI	0:4edb816d21e1	276
ICTFBI	0:4edb816d21e1	277
ICTFBI	0:4edb816d21e1	278	/*
ICTFBI	0:4edb816d21e1	279	* Buffers for outgoing packets. This must be accessed only from the appropriate
ICTFBI	0:4edb816d21e1	280	* PPP task so that it doesn't need to be protected to avoid collisions.
ICTFBI	0:4edb816d21e1	281	*/
ICTFBI	0:4edb816d21e1	282	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] MEM_POSITION;
ICTFBI	0:4edb816d21e1	283
ICTFBI	0:4edb816d21e1	284
ICTFBI	0:4edb816d21e1	285	/*****************************/
ICTFBI	0:4edb816d21e1	286	/* LOCAL DATA STRUCTURES */
ICTFBI	0:4edb816d21e1	287	/*****************************/
ICTFBI	0:4edb816d21e1	288
ICTFBI	0:4edb816d21e1	289	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	290	/*
ICTFBI	0:4edb816d21e1	291	* FCS lookup table as calculated by genfcstab.
ICTFBI	0:4edb816d21e1	292	* @todo: smaller, slower implementation for lower memory footprint?
ICTFBI	0:4edb816d21e1	293	*/
ICTFBI	0:4edb816d21e1	294	static const u_short fcstab[256] = {
ICTFBI	0:4edb816d21e1	295	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
ICTFBI	0:4edb816d21e1	296	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
ICTFBI	0:4edb816d21e1	297	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
ICTFBI	0:4edb816d21e1	298	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
ICTFBI	0:4edb816d21e1	299	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
ICTFBI	0:4edb816d21e1	300	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
ICTFBI	0:4edb816d21e1	301	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
ICTFBI	0:4edb816d21e1	302	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
ICTFBI	0:4edb816d21e1	303	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
ICTFBI	0:4edb816d21e1	304	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
ICTFBI	0:4edb816d21e1	305	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
ICTFBI	0:4edb816d21e1	306	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
ICTFBI	0:4edb816d21e1	307	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
ICTFBI	0:4edb816d21e1	308	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
ICTFBI	0:4edb816d21e1	309	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
ICTFBI	0:4edb816d21e1	310	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
ICTFBI	0:4edb816d21e1	311	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
ICTFBI	0:4edb816d21e1	312	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
ICTFBI	0:4edb816d21e1	313	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
ICTFBI	0:4edb816d21e1	314	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
ICTFBI	0:4edb816d21e1	315	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
ICTFBI	0:4edb816d21e1	316	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
ICTFBI	0:4edb816d21e1	317	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
ICTFBI	0:4edb816d21e1	318	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
ICTFBI	0:4edb816d21e1	319	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
ICTFBI	0:4edb816d21e1	320	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
ICTFBI	0:4edb816d21e1	321	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
ICTFBI	0:4edb816d21e1	322	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
ICTFBI	0:4edb816d21e1	323	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
ICTFBI	0:4edb816d21e1	324	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
ICTFBI	0:4edb816d21e1	325	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
ICTFBI	0:4edb816d21e1	326	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
ICTFBI	0:4edb816d21e1	327	};
ICTFBI	0:4edb816d21e1	328
ICTFBI	0:4edb816d21e1	329	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
ICTFBI	0:4edb816d21e1	330	* to select the specific bit for a character. */
ICTFBI	0:4edb816d21e1	331	static u_char pppACCMMask[] = {
ICTFBI	0:4edb816d21e1	332	0x01,
ICTFBI	0:4edb816d21e1	333	0x02,
ICTFBI	0:4edb816d21e1	334	0x04,
ICTFBI	0:4edb816d21e1	335	0x08,
ICTFBI	0:4edb816d21e1	336	0x10,
ICTFBI	0:4edb816d21e1	337	0x20,
ICTFBI	0:4edb816d21e1	338	0x40,
ICTFBI	0:4edb816d21e1	339	0x80
ICTFBI	0:4edb816d21e1	340	};
ICTFBI	0:4edb816d21e1	341
ICTFBI	0:4edb816d21e1	342	/** Wake up the task blocked in reading from serial line (if any) */
ICTFBI	0:4edb816d21e1	343	static void
ICTFBI	0:4edb816d21e1	344	pppRecvWakeup(int pd)
ICTFBI	0:4edb816d21e1	345	{
ICTFBI	0:4edb816d21e1	346	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
ICTFBI	0:4edb816d21e1	347	sio_read_abort(pppControl[pd].fd);
ICTFBI	0:4edb816d21e1	348	}
ICTFBI	0:4edb816d21e1	349	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	350
ICTFBI	0:4edb816d21e1	351	void
ICTFBI	0:4edb816d21e1	352	pppLinkTerminated(int pd)
ICTFBI	0:4edb816d21e1	353	{
ICTFBI	0:4edb816d21e1	354	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
ICTFBI	0:4edb816d21e1	355
ICTFBI	0:4edb816d21e1	356	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	357	if (pppControl[pd].ethif) {
ICTFBI	0:4edb816d21e1	358	pppoe_disconnect(pppControl[pd].pppoe_sc);
ICTFBI	0:4edb816d21e1	359	} else
ICTFBI	0:4edb816d21e1	360	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	361	{
ICTFBI	0:4edb816d21e1	362	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	363	PPPControl* pc;
ICTFBI	0:4edb816d21e1	364	pppRecvWakeup(pd);
ICTFBI	0:4edb816d21e1	365	pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	366	pppDrop(&pc->rx); /* bug fix #17726 */
ICTFBI	0:4edb816d21e1	367
ICTFBI	0:4edb816d21e1	368	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
ICTFBI	0:4edb816d21e1	369	if (pc->linkStatusCB) {
ICTFBI	0:4edb816d21e1	370	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
ICTFBI	0:4edb816d21e1	371	}
ICTFBI	0:4edb816d21e1	372
ICTFBI	0:4edb816d21e1	373	pc->openFlag = 0;/**/
ICTFBI	0:4edb816d21e1	374	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	375	}
ICTFBI	0:4edb816d21e1	376	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
ICTFBI	0:4edb816d21e1	377	}
ICTFBI	0:4edb816d21e1	378
ICTFBI	0:4edb816d21e1	379	void
ICTFBI	0:4edb816d21e1	380	pppLinkDown(int pd)
ICTFBI	0:4edb816d21e1	381	{
ICTFBI	0:4edb816d21e1	382	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
ICTFBI	0:4edb816d21e1	383
ICTFBI	0:4edb816d21e1	384	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	385	if (pppControl[pd].ethif) {
ICTFBI	0:4edb816d21e1	386	pppoe_disconnect(pppControl[pd].pppoe_sc);
ICTFBI	0:4edb816d21e1	387	} else
ICTFBI	0:4edb816d21e1	388	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	389	{
ICTFBI	0:4edb816d21e1	390	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	391	pppRecvWakeup(pd);
ICTFBI	0:4edb816d21e1	392	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	393	}
ICTFBI	0:4edb816d21e1	394	}
ICTFBI	0:4edb816d21e1	395
ICTFBI	0:4edb816d21e1	396	/** Initiate LCP open request */
ICTFBI	0:4edb816d21e1	397	static void
ICTFBI	0:4edb816d21e1	398	pppStart(int pd)
ICTFBI	0:4edb816d21e1	399	{
ICTFBI	0:4edb816d21e1	400	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
ICTFBI	0:4edb816d21e1	401	lcp_lowerup(pd);
ICTFBI	0:4edb816d21e1	402	lcp_open(pd); /* Start protocol */
ICTFBI	0:4edb816d21e1	403	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
ICTFBI	0:4edb816d21e1	404	}
ICTFBI	0:4edb816d21e1	405
ICTFBI	0:4edb816d21e1	406	/** LCP close request */
ICTFBI	0:4edb816d21e1	407	static void
ICTFBI	0:4edb816d21e1	408	pppStop(int pd)
ICTFBI	0:4edb816d21e1	409	{
ICTFBI	0:4edb816d21e1	410	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
ICTFBI	0:4edb816d21e1	411	lcp_close(pd, "User request");
ICTFBI	0:4edb816d21e1	412	}
ICTFBI	0:4edb816d21e1	413
ICTFBI	0:4edb816d21e1	414	/** Called when carrier/link is lost */
ICTFBI	0:4edb816d21e1	415	static void
ICTFBI	0:4edb816d21e1	416	pppHup(int pd)
ICTFBI	0:4edb816d21e1	417	{
ICTFBI	0:4edb816d21e1	418	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
ICTFBI	0:4edb816d21e1	419	lcp_lowerdown(pd);
ICTFBI	0:4edb816d21e1	420	link_terminated(pd);
ICTFBI	0:4edb816d21e1	421	}
ICTFBI	0:4edb816d21e1	422
ICTFBI	0:4edb816d21e1	423	/***********************************/
ICTFBI	0:4edb816d21e1	424	/* PUBLIC FUNCTION DEFINITIONS */
ICTFBI	0:4edb816d21e1	425	/***********************************/
ICTFBI	0:4edb816d21e1	426	/* Initialize the PPP subsystem. */
ICTFBI	0:4edb816d21e1	427
ICTFBI	0:4edb816d21e1	428	struct ppp_settings ppp_settings;
ICTFBI	0:4edb816d21e1	429
ICTFBI	0:4edb816d21e1	430	void
ICTFBI	0:4edb816d21e1	431	pppInit(void)
ICTFBI	0:4edb816d21e1	432	{
ICTFBI	0:4edb816d21e1	433	struct protent *protp;
ICTFBI	0:4edb816d21e1	434	int i, j;
ICTFBI	0:4edb816d21e1	435
ICTFBI	0:4edb816d21e1	436	memset(&ppp_settings, 0, sizeof(ppp_settings));
ICTFBI	0:4edb816d21e1	437	ppp_settings.usepeerdns = 1;
ICTFBI	0:4edb816d21e1	438	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
ICTFBI	0:4edb816d21e1	439
ICTFBI	0:4edb816d21e1	440	magicInit();
ICTFBI	0:4edb816d21e1	441
ICTFBI	0:4edb816d21e1	442	subnetMask = PP_HTONL(0xffffff00);
ICTFBI	0:4edb816d21e1	443
ICTFBI	0:4edb816d21e1	444	for (i = 0; i < NUM_PPP; i++) {
ICTFBI	0:4edb816d21e1	445	/* Initialize each protocol to the standard option set. */
ICTFBI	0:4edb816d21e1	446	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
ICTFBI	0:4edb816d21e1	447	(*protp->init)(i);
ICTFBI	0:4edb816d21e1	448	}
ICTFBI	0:4edb816d21e1	449	}
ICTFBI	0:4edb816d21e1	450	}
ICTFBI	0:4edb816d21e1	451
ICTFBI	0:4edb816d21e1	452	void
ICTFBI	0:4edb816d21e1	453	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
ICTFBI	0:4edb816d21e1	454	{
ICTFBI	0:4edb816d21e1	455	switch(authType) {
ICTFBI	0:4edb816d21e1	456	case PPPAUTHTYPE_NONE:
ICTFBI	0:4edb816d21e1	457	default:
ICTFBI	0:4edb816d21e1	458	#ifdef LWIP_PPP_STRICT_PAP_REJECT
ICTFBI	0:4edb816d21e1	459	ppp_settings.refuse_pap = 1;
ICTFBI	0:4edb816d21e1	460	#else /* LWIP_PPP_STRICT_PAP_REJECT */
ICTFBI	0:4edb816d21e1	461	/* some providers request pap and accept an empty login/pw */
ICTFBI	0:4edb816d21e1	462	ppp_settings.refuse_pap = 0;
ICTFBI	0:4edb816d21e1	463	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
ICTFBI	0:4edb816d21e1	464	ppp_settings.refuse_chap = 1;
ICTFBI	0:4edb816d21e1	465	break;
ICTFBI	0:4edb816d21e1	466
ICTFBI	0:4edb816d21e1	467	case PPPAUTHTYPE_ANY:
ICTFBI	0:4edb816d21e1	468	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
ICTFBI	0:4edb816d21e1	469	* RFC 1994 says:
ICTFBI	0:4edb816d21e1	470	*
ICTFBI	0:4edb816d21e1	471	* In practice, within or associated with each PPP server, there is a
ICTFBI	0:4edb816d21e1	472	* database which associates "user" names with authentication
ICTFBI	0:4edb816d21e1	473	* information ("secrets"). It is not anticipated that a particular
ICTFBI	0:4edb816d21e1	474	* named user would be authenticated by multiple methods. This would
ICTFBI	0:4edb816d21e1	475	* make the user vulnerable to attacks which negotiate the least secure
ICTFBI	0:4edb816d21e1	476	* method from among a set (such as PAP rather than CHAP). If the same
ICTFBI	0:4edb816d21e1	477	* secret was used, PAP would reveal the secret to be used later with
ICTFBI	0:4edb816d21e1	478	* CHAP.
ICTFBI	0:4edb816d21e1	479	*
ICTFBI	0:4edb816d21e1	480	* Instead, for each user name there should be an indication of exactly
ICTFBI	0:4edb816d21e1	481	* one method used to authenticate that user name. If a user needs to
ICTFBI	0:4edb816d21e1	482	* make use of different authentication methods under different
ICTFBI	0:4edb816d21e1	483	* circumstances, then distinct user names SHOULD be employed, each of
ICTFBI	0:4edb816d21e1	484	* which identifies exactly one authentication method.
ICTFBI	0:4edb816d21e1	485	*
ICTFBI	0:4edb816d21e1	486	*/
ICTFBI	0:4edb816d21e1	487	ppp_settings.refuse_pap = 0;
ICTFBI	0:4edb816d21e1	488	ppp_settings.refuse_chap = 0;
ICTFBI	0:4edb816d21e1	489	break;
ICTFBI	0:4edb816d21e1	490
ICTFBI	0:4edb816d21e1	491	case PPPAUTHTYPE_PAP:
ICTFBI	0:4edb816d21e1	492	ppp_settings.refuse_pap = 0;
ICTFBI	0:4edb816d21e1	493	ppp_settings.refuse_chap = 1;
ICTFBI	0:4edb816d21e1	494	break;
ICTFBI	0:4edb816d21e1	495
ICTFBI	0:4edb816d21e1	496	case PPPAUTHTYPE_CHAP:
ICTFBI	0:4edb816d21e1	497	ppp_settings.refuse_pap = 1;
ICTFBI	0:4edb816d21e1	498	ppp_settings.refuse_chap = 0;
ICTFBI	0:4edb816d21e1	499	break;
ICTFBI	0:4edb816d21e1	500	}
ICTFBI	0:4edb816d21e1	501
ICTFBI	0:4edb816d21e1	502	if(user) {
ICTFBI	0:4edb816d21e1	503	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
ICTFBI	0:4edb816d21e1	504	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
ICTFBI	0:4edb816d21e1	505	} else {
ICTFBI	0:4edb816d21e1	506	ppp_settings.user[0] = '\0';
ICTFBI	0:4edb816d21e1	507	}
ICTFBI	0:4edb816d21e1	508
ICTFBI	0:4edb816d21e1	509	if(passwd) {
ICTFBI	0:4edb816d21e1	510	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
ICTFBI	0:4edb816d21e1	511	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
ICTFBI	0:4edb816d21e1	512	} else {
ICTFBI	0:4edb816d21e1	513	ppp_settings.passwd[0] = '\0';
ICTFBI	0:4edb816d21e1	514	}
ICTFBI	0:4edb816d21e1	515	}
ICTFBI	0:4edb816d21e1	516
ICTFBI	0:4edb816d21e1	517	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	518	/** Open a new PPP connection using the given I/O device.
ICTFBI	0:4edb816d21e1	519	* This initializes the PPP control block but does not
ICTFBI	0:4edb816d21e1	520	* attempt to negotiate the LCP session. If this port
ICTFBI	0:4edb816d21e1	521	* connects to a modem, the modem connection must be
ICTFBI	0:4edb816d21e1	522	* established before calling this.
ICTFBI	0:4edb816d21e1	523	* Return a new PPP connection descriptor on success or
ICTFBI	0:4edb816d21e1	524	* an error code (negative) on failure.
ICTFBI	0:4edb816d21e1	525	*
ICTFBI	0:4edb816d21e1	526	* pppOpen() is directly defined to this function.
ICTFBI	0:4edb816d21e1	527	*/
ICTFBI	0:4edb816d21e1	528	int
ICTFBI	0:4edb816d21e1	529	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
ICTFBI	0:4edb816d21e1	530	{
ICTFBI	0:4edb816d21e1	531	PPPControl *pc;
ICTFBI	0:4edb816d21e1	532	int pd;
ICTFBI	0:4edb816d21e1	533
ICTFBI	0:4edb816d21e1	534	if (linkStatusCB == NULL) {
ICTFBI	0:4edb816d21e1	535	/* PPP is single-threaded: without a callback,
ICTFBI	0:4edb816d21e1	536	* there is no way to know when the link is up. */
ICTFBI	0:4edb816d21e1	537	return PPPERR_PARAM;
ICTFBI	0:4edb816d21e1	538	}
ICTFBI	0:4edb816d21e1	539
ICTFBI	0:4edb816d21e1	540	/* Find a free PPP session descriptor. */
ICTFBI	0:4edb816d21e1	541	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
ICTFBI	0:4edb816d21e1	542
ICTFBI	0:4edb816d21e1	543	if (pd >= NUM_PPP) {
ICTFBI	0:4edb816d21e1	544	pd = PPPERR_OPEN;
ICTFBI	0:4edb816d21e1	545	} else {
ICTFBI	0:4edb816d21e1	546	pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	547	/* @todo: is this correct or do I overwrite something? */
ICTFBI	0:4edb816d21e1	548	memset(pc, 0, sizeof(PPPControl));
ICTFBI	0:4edb816d21e1	549	pc->rx.pd = pd;
ICTFBI	0:4edb816d21e1	550	pc->rx.fd = fd;
ICTFBI	0:4edb816d21e1	551
ICTFBI	0:4edb816d21e1	552	pc->openFlag = 1;
ICTFBI	0:4edb816d21e1	553	pc->fd = fd;
ICTFBI	0:4edb816d21e1	554
ICTFBI	0:4edb816d21e1	555	#if VJ_SUPPORT
ICTFBI	0:4edb816d21e1	556	vj_compress_init(&pc->vjComp);
ICTFBI	0:4edb816d21e1	557	#endif /* VJ_SUPPORT */
ICTFBI	0:4edb816d21e1	558
ICTFBI	0:4edb816d21e1	559	/*
ICTFBI	0:4edb816d21e1	560	* Default the in and out accm so that escape and flag characters
ICTFBI	0:4edb816d21e1	561	* are always escaped.
ICTFBI	0:4edb816d21e1	562	*/
ICTFBI	0:4edb816d21e1	563	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
ICTFBI	0:4edb816d21e1	564	pc->outACCM[15] = 0x60;
ICTFBI	0:4edb816d21e1	565
ICTFBI	0:4edb816d21e1	566	pc->linkStatusCB = linkStatusCB;
ICTFBI	0:4edb816d21e1	567	pc->linkStatusCtx = linkStatusCtx;
ICTFBI	0:4edb816d21e1	568
ICTFBI	0:4edb816d21e1	569	/*
ICTFBI	0:4edb816d21e1	570	* Start the connection and handle incoming events (packet or timeout).
ICTFBI	0:4edb816d21e1	571	*/
ICTFBI	0:4edb816d21e1	572	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
ICTFBI	0:4edb816d21e1	573	pppStart(pd);
ICTFBI	0:4edb816d21e1	574	#if PPP_INPROC_OWNTHREAD
ICTFBI	0:4edb816d21e1	575	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
ICTFBI	0:4edb816d21e1	576	#endif
ICTFBI	0:4edb816d21e1	577	}
ICTFBI	0:4edb816d21e1	578
ICTFBI	0:4edb816d21e1	579	return pd;
ICTFBI	0:4edb816d21e1	580	}
ICTFBI	0:4edb816d21e1	581	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	582
ICTFBI	0:4edb816d21e1	583	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	584	static void pppOverEthernetLinkStatusCB(int pd, int up);
ICTFBI	0:4edb816d21e1	585
ICTFBI	0:4edb816d21e1	586	void
ICTFBI	0:4edb816d21e1	587	pppOverEthernetClose(int pd)
ICTFBI	0:4edb816d21e1	588	{
ICTFBI	0:4edb816d21e1	589	PPPControl* pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	590
ICTFBI	0:4edb816d21e1	591	/* TJL There's no lcp_deinit */
ICTFBI	0:4edb816d21e1	592	lcp_close(pd, NULL);
ICTFBI	0:4edb816d21e1	593
ICTFBI	0:4edb816d21e1	594	pppoe_destroy(&pc->netif);
ICTFBI	0:4edb816d21e1	595	}
ICTFBI	0:4edb816d21e1	596
ICTFBI	0:4edb816d21e1	597	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
ICTFBI	0:4edb816d21e1	598	{
ICTFBI	0:4edb816d21e1	599	PPPControl *pc;
ICTFBI	0:4edb816d21e1	600	int pd;
ICTFBI	0:4edb816d21e1	601
ICTFBI	0:4edb816d21e1	602	LWIP_UNUSED_ARG(service_name);
ICTFBI	0:4edb816d21e1	603	LWIP_UNUSED_ARG(concentrator_name);
ICTFBI	0:4edb816d21e1	604
ICTFBI	0:4edb816d21e1	605	if (linkStatusCB == NULL) {
ICTFBI	0:4edb816d21e1	606	/* PPP is single-threaded: without a callback,
ICTFBI	0:4edb816d21e1	607	* there is no way to know when the link is up. */
ICTFBI	0:4edb816d21e1	608	return PPPERR_PARAM;
ICTFBI	0:4edb816d21e1	609	}
ICTFBI	0:4edb816d21e1	610
ICTFBI	0:4edb816d21e1	611	/* Find a free PPP session descriptor. Critical region? */
ICTFBI	0:4edb816d21e1	612	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
ICTFBI	0:4edb816d21e1	613	if (pd >= NUM_PPP) {
ICTFBI	0:4edb816d21e1	614	pd = PPPERR_OPEN;
ICTFBI	0:4edb816d21e1	615	} else {
ICTFBI	0:4edb816d21e1	616	pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	617	memset(pc, 0, sizeof(PPPControl));
ICTFBI	0:4edb816d21e1	618	pc->openFlag = 1;
ICTFBI	0:4edb816d21e1	619	pc->ethif = ethif;
ICTFBI	0:4edb816d21e1	620
ICTFBI	0:4edb816d21e1	621	pc->linkStatusCB = linkStatusCB;
ICTFBI	0:4edb816d21e1	622	pc->linkStatusCtx = linkStatusCtx;
ICTFBI	0:4edb816d21e1	623
ICTFBI	0:4edb816d21e1	624	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
ICTFBI	0:4edb816d21e1	625	lcp_wantoptions[pd].neg_asyncmap = 0;
ICTFBI	0:4edb816d21e1	626	lcp_wantoptions[pd].neg_pcompression = 0;
ICTFBI	0:4edb816d21e1	627	lcp_wantoptions[pd].neg_accompression = 0;
ICTFBI	0:4edb816d21e1	628
ICTFBI	0:4edb816d21e1	629	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
ICTFBI	0:4edb816d21e1	630	lcp_allowoptions[pd].neg_asyncmap = 0;
ICTFBI	0:4edb816d21e1	631	lcp_allowoptions[pd].neg_pcompression = 0;
ICTFBI	0:4edb816d21e1	632	lcp_allowoptions[pd].neg_accompression = 0;
ICTFBI	0:4edb816d21e1	633
ICTFBI	0:4edb816d21e1	634	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
ICTFBI	0:4edb816d21e1	635	pc->openFlag = 0;
ICTFBI	0:4edb816d21e1	636	return PPPERR_OPEN;
ICTFBI	0:4edb816d21e1	637	}
ICTFBI	0:4edb816d21e1	638
ICTFBI	0:4edb816d21e1	639	pppoe_connect(pc->pppoe_sc);
ICTFBI	0:4edb816d21e1	640	}
ICTFBI	0:4edb816d21e1	641
ICTFBI	0:4edb816d21e1	642	return pd;
ICTFBI	0:4edb816d21e1	643	}
ICTFBI	0:4edb816d21e1	644	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	645
ICTFBI	0:4edb816d21e1	646
ICTFBI	0:4edb816d21e1	647	/* Close a PPP connection and release the descriptor.
ICTFBI	0:4edb816d21e1	648	* Any outstanding packets in the queues are dropped.
ICTFBI	0:4edb816d21e1	649	* Return 0 on success, an error code on failure. */
ICTFBI	0:4edb816d21e1	650	int
ICTFBI	0:4edb816d21e1	651	pppClose(int pd)
ICTFBI	0:4edb816d21e1	652	{
ICTFBI	0:4edb816d21e1	653	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	654	int st = 0;
ICTFBI	0:4edb816d21e1	655
ICTFBI	0:4edb816d21e1	656	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
ICTFBI	0:4edb816d21e1	657
ICTFBI	0:4edb816d21e1	658	/* Disconnect */
ICTFBI	0:4edb816d21e1	659	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	660	if(pc->ethif) {
ICTFBI	0:4edb816d21e1	661	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
ICTFBI	0:4edb816d21e1	662	pc->errCode = PPPERR_USER;
ICTFBI	0:4edb816d21e1	663	/* This will leave us at PHASE_DEAD. */
ICTFBI	0:4edb816d21e1	664	pppStop(pd);
ICTFBI	0:4edb816d21e1	665	} else
ICTFBI	0:4edb816d21e1	666	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	667	{
ICTFBI	0:4edb816d21e1	668	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	669	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
ICTFBI	0:4edb816d21e1	670	pc->errCode = PPPERR_USER;
ICTFBI	0:4edb816d21e1	671	/* This will leave us at PHASE_DEAD. */
ICTFBI	0:4edb816d21e1	672	pppStop(pd);
ICTFBI	0:4edb816d21e1	673	pppRecvWakeup(pd);
ICTFBI	0:4edb816d21e1	674	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	675	}
ICTFBI	0:4edb816d21e1	676
ICTFBI	0:4edb816d21e1	677	return st;
ICTFBI	0:4edb816d21e1	678	}
ICTFBI	0:4edb816d21e1	679
ICTFBI	0:4edb816d21e1	680	/* This function is called when carrier is lost on the PPP channel. */
ICTFBI	0:4edb816d21e1	681	void
ICTFBI	0:4edb816d21e1	682	pppSigHUP(int pd)
ICTFBI	0:4edb816d21e1	683	{
ICTFBI	0:4edb816d21e1	684	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	685	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	686	if(pc->ethif) {
ICTFBI	0:4edb816d21e1	687	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
ICTFBI	0:4edb816d21e1	688	pppHup(pd);
ICTFBI	0:4edb816d21e1	689	} else
ICTFBI	0:4edb816d21e1	690	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	691	{
ICTFBI	0:4edb816d21e1	692	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	693	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
ICTFBI	0:4edb816d21e1	694	pppHup(pd);
ICTFBI	0:4edb816d21e1	695	pppRecvWakeup(pd);
ICTFBI	0:4edb816d21e1	696	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	697	}
ICTFBI	0:4edb816d21e1	698	}
ICTFBI	0:4edb816d21e1	699
ICTFBI	0:4edb816d21e1	700	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	701	static void
ICTFBI	0:4edb816d21e1	702	nPut(PPPControl pc, struct pbuf nb)
ICTFBI	0:4edb816d21e1	703	{
ICTFBI	0:4edb816d21e1	704	struct pbuf *b;
ICTFBI	0:4edb816d21e1	705	int c;
ICTFBI	0:4edb816d21e1	706
ICTFBI	0:4edb816d21e1	707	for(b = nb; b != NULL; b = b->next) {
ICTFBI	0:4edb816d21e1	708	if((c = sio_write(pc->fd, (u8_t *)b->payload, b->len)) != b->len) {
ICTFBI	0:4edb816d21e1	709	PPPDEBUG(LOG_WARNING,
ICTFBI	0:4edb816d21e1	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));
ICTFBI	0:4edb816d21e1	711	LINK_STATS_INC(link.err);
ICTFBI	0:4edb816d21e1	712	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
ICTFBI	0:4edb816d21e1	713	snmp_inc_ifoutdiscards(&pc->netif);
ICTFBI	0:4edb816d21e1	714	pbuf_free(nb);
ICTFBI	0:4edb816d21e1	715	return;
ICTFBI	0:4edb816d21e1	716	}
ICTFBI	0:4edb816d21e1	717	}
ICTFBI	0:4edb816d21e1	718
ICTFBI	0:4edb816d21e1	719	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
ICTFBI	0:4edb816d21e1	720	snmp_inc_ifoutucastpkts(&pc->netif);
ICTFBI	0:4edb816d21e1	721	pbuf_free(nb);
ICTFBI	0:4edb816d21e1	722	LINK_STATS_INC(link.xmit);
ICTFBI	0:4edb816d21e1	723	}
ICTFBI	0:4edb816d21e1	724
ICTFBI	0:4edb816d21e1	725	/*
ICTFBI	0:4edb816d21e1	726	* pppAppend - append given character to end of given pbuf. If outACCM
ICTFBI	0:4edb816d21e1	727	* is not NULL and the character needs to be escaped, do so.
ICTFBI	0:4edb816d21e1	728	* If pbuf is full, append another.
ICTFBI	0:4edb816d21e1	729	* Return the current pbuf.
ICTFBI	0:4edb816d21e1	730	*/
ICTFBI	0:4edb816d21e1	731	static struct pbuf *
ICTFBI	0:4edb816d21e1	732	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
ICTFBI	0:4edb816d21e1	733	{
ICTFBI	0:4edb816d21e1	734	struct pbuf *tb = nb;
ICTFBI	0:4edb816d21e1	735
ICTFBI	0:4edb816d21e1	736	/* Make sure there is room for the character and an escape code.
ICTFBI	0:4edb816d21e1	737	* Sure we don't quite fill the buffer if the character doesn't
ICTFBI	0:4edb816d21e1	738	* get escaped but is one character worth complicating this? */
ICTFBI	0:4edb816d21e1	739	/* Note: We assume no packet header. */
ICTFBI	0:4edb816d21e1	740	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
ICTFBI	0:4edb816d21e1	741	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
ICTFBI	0:4edb816d21e1	742	if (tb) {
ICTFBI	0:4edb816d21e1	743	nb->next = tb;
ICTFBI	0:4edb816d21e1	744	} else {
ICTFBI	0:4edb816d21e1	745	LINK_STATS_INC(link.memerr);
ICTFBI	0:4edb816d21e1	746	}
ICTFBI	0:4edb816d21e1	747	nb = tb;
ICTFBI	0:4edb816d21e1	748	}
ICTFBI	0:4edb816d21e1	749
ICTFBI	0:4edb816d21e1	750	if (nb) {
ICTFBI	0:4edb816d21e1	751	if (outACCM && ESCAPE_P(*outACCM, c)) {
ICTFBI	0:4edb816d21e1	752	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
ICTFBI	0:4edb816d21e1	753	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
ICTFBI	0:4edb816d21e1	754	} else {
ICTFBI	0:4edb816d21e1	755	((u_char)nb->payload + nb->len++) = c;
ICTFBI	0:4edb816d21e1	756	}
ICTFBI	0:4edb816d21e1	757	}
ICTFBI	0:4edb816d21e1	758
ICTFBI	0:4edb816d21e1	759	return tb;
ICTFBI	0:4edb816d21e1	760	}
ICTFBI	0:4edb816d21e1	761	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	762
ICTFBI	0:4edb816d21e1	763	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	764	static err_t
ICTFBI	0:4edb816d21e1	765	pppifOutputOverEthernet(int pd, struct pbuf *p)
ICTFBI	0:4edb816d21e1	766	{
ICTFBI	0:4edb816d21e1	767	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	768	struct pbuf *pb;
ICTFBI	0:4edb816d21e1	769	u_short protocol = PPP_IP;
ICTFBI	0:4edb816d21e1	770	int i=0;
ICTFBI	0:4edb816d21e1	771	u16_t tot_len;
ICTFBI	0:4edb816d21e1	772
ICTFBI	0:4edb816d21e1	773	/* @todo: try to use pbuf_header() here! */
ICTFBI	0:4edb816d21e1	774	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
ICTFBI	0:4edb816d21e1	775	if(!pb) {
ICTFBI	0:4edb816d21e1	776	LINK_STATS_INC(link.memerr);
ICTFBI	0:4edb816d21e1	777	LINK_STATS_INC(link.proterr);
ICTFBI	0:4edb816d21e1	778	snmp_inc_ifoutdiscards(&pc->netif);
ICTFBI	0:4edb816d21e1	779	return ERR_MEM;
ICTFBI	0:4edb816d21e1	780	}
ICTFBI	0:4edb816d21e1	781
ICTFBI	0:4edb816d21e1	782	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
ICTFBI	0:4edb816d21e1	783
ICTFBI	0:4edb816d21e1	784	pc->lastXMit = sys_jiffies();
ICTFBI	0:4edb816d21e1	785
ICTFBI	0:4edb816d21e1	786	if (!pc->pcomp \|\| protocol > 0xFF) {
ICTFBI	0:4edb816d21e1	787	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
ICTFBI	0:4edb816d21e1	788	}
ICTFBI	0:4edb816d21e1	789	((u_char)pb->payload + i) = protocol & 0xFF;
ICTFBI	0:4edb816d21e1	790
ICTFBI	0:4edb816d21e1	791	pbuf_chain(pb, p);
ICTFBI	0:4edb816d21e1	792	tot_len = pb->tot_len;
ICTFBI	0:4edb816d21e1	793
ICTFBI	0:4edb816d21e1	794	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
ICTFBI	0:4edb816d21e1	795	LINK_STATS_INC(link.err);
ICTFBI	0:4edb816d21e1	796	snmp_inc_ifoutdiscards(&pc->netif);
ICTFBI	0:4edb816d21e1	797	return PPPERR_DEVICE;
ICTFBI	0:4edb816d21e1	798	}
ICTFBI	0:4edb816d21e1	799
ICTFBI	0:4edb816d21e1	800	snmp_add_ifoutoctets(&pc->netif, tot_len);
ICTFBI	0:4edb816d21e1	801	snmp_inc_ifoutucastpkts(&pc->netif);
ICTFBI	0:4edb816d21e1	802	LINK_STATS_INC(link.xmit);
ICTFBI	0:4edb816d21e1	803	return ERR_OK;
ICTFBI	0:4edb816d21e1	804	}
ICTFBI	0:4edb816d21e1	805	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	806
ICTFBI	0:4edb816d21e1	807	/* Send a packet on the given connection. */
ICTFBI	0:4edb816d21e1	808	static err_t
ICTFBI	0:4edb816d21e1	809	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
ICTFBI	0:4edb816d21e1	810	{
ICTFBI	0:4edb816d21e1	811	int pd = (int)(size_t)netif->state;
ICTFBI	0:4edb816d21e1	812	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	813	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	814	u_short protocol = PPP_IP;
ICTFBI	0:4edb816d21e1	815	u_int fcsOut = PPP_INITFCS;
ICTFBI	0:4edb816d21e1	816	struct pbuf headMB = NULL, tailMB = NULL, *p;
ICTFBI	0:4edb816d21e1	817	u_char c;
ICTFBI	0:4edb816d21e1	818	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	819
ICTFBI	0:4edb816d21e1	820	LWIP_UNUSED_ARG(ipaddr);
ICTFBI	0:4edb816d21e1	821
ICTFBI	0:4edb816d21e1	822	/* Validate parameters. */
ICTFBI	0:4edb816d21e1	823	/* We let any protocol value go through - it can't hurt us
ICTFBI	0:4edb816d21e1	824	* and the peer will just drop it if it's not accepting it. */
ICTFBI	0:4edb816d21e1	825	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
ICTFBI	0:4edb816d21e1	826	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
ICTFBI	0:4edb816d21e1	827	pd, PPP_IP, pb));
ICTFBI	0:4edb816d21e1	828	LINK_STATS_INC(link.opterr);
ICTFBI	0:4edb816d21e1	829	LINK_STATS_INC(link.drop);
ICTFBI	0:4edb816d21e1	830	snmp_inc_ifoutdiscards(netif);
ICTFBI	0:4edb816d21e1	831	return ERR_ARG;
ICTFBI	0:4edb816d21e1	832	}
ICTFBI	0:4edb816d21e1	833
ICTFBI	0:4edb816d21e1	834	/* Check that the link is up. */
ICTFBI	0:4edb816d21e1	835	if (lcp_phase[pd] == PHASE_DEAD) {
ICTFBI	0:4edb816d21e1	836	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
ICTFBI	0:4edb816d21e1	837	LINK_STATS_INC(link.rterr);
ICTFBI	0:4edb816d21e1	838	LINK_STATS_INC(link.drop);
ICTFBI	0:4edb816d21e1	839	snmp_inc_ifoutdiscards(netif);
ICTFBI	0:4edb816d21e1	840	return ERR_RTE;
ICTFBI	0:4edb816d21e1	841	}
ICTFBI	0:4edb816d21e1	842
ICTFBI	0:4edb816d21e1	843	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	844	if(pc->ethif) {
ICTFBI	0:4edb816d21e1	845	return pppifOutputOverEthernet(pd, pb);
ICTFBI	0:4edb816d21e1	846	}
ICTFBI	0:4edb816d21e1	847	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	848
ICTFBI	0:4edb816d21e1	849	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	850	/* Grab an output buffer. */
ICTFBI	0:4edb816d21e1	851	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
ICTFBI	0:4edb816d21e1	852	if (headMB == NULL) {
ICTFBI	0:4edb816d21e1	853	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
ICTFBI	0:4edb816d21e1	854	LINK_STATS_INC(link.memerr);
ICTFBI	0:4edb816d21e1	855	LINK_STATS_INC(link.drop);
ICTFBI	0:4edb816d21e1	856	snmp_inc_ifoutdiscards(netif);
ICTFBI	0:4edb816d21e1	857	return ERR_MEM;
ICTFBI	0:4edb816d21e1	858	}
ICTFBI	0:4edb816d21e1	859
ICTFBI	0:4edb816d21e1	860	#if VJ_SUPPORT
ICTFBI	0:4edb816d21e1	861	/*
ICTFBI	0:4edb816d21e1	862	* Attempt Van Jacobson header compression if VJ is configured and
ICTFBI	0:4edb816d21e1	863	* this is an IP packet.
ICTFBI	0:4edb816d21e1	864	*/
ICTFBI	0:4edb816d21e1	865	if (protocol == PPP_IP && pc->vjEnabled) {
ICTFBI	0:4edb816d21e1	866	switch (vj_compress_tcp(&pc->vjComp, pb)) {
ICTFBI	0:4edb816d21e1	867	case TYPE_IP:
ICTFBI	0:4edb816d21e1	868	/* No change...
ICTFBI	0:4edb816d21e1	869	protocol = PPP_IP_PROTOCOL; */
ICTFBI	0:4edb816d21e1	870	break;
ICTFBI	0:4edb816d21e1	871	case TYPE_COMPRESSED_TCP:
ICTFBI	0:4edb816d21e1	872	protocol = PPP_VJC_COMP;
ICTFBI	0:4edb816d21e1	873	break;
ICTFBI	0:4edb816d21e1	874	case TYPE_UNCOMPRESSED_TCP:
ICTFBI	0:4edb816d21e1	875	protocol = PPP_VJC_UNCOMP;
ICTFBI	0:4edb816d21e1	876	break;
ICTFBI	0:4edb816d21e1	877	default:
ICTFBI	0:4edb816d21e1	878	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
ICTFBI	0:4edb816d21e1	879	LINK_STATS_INC(link.proterr);
ICTFBI	0:4edb816d21e1	880	LINK_STATS_INC(link.drop);
ICTFBI	0:4edb816d21e1	881	snmp_inc_ifoutdiscards(netif);
ICTFBI	0:4edb816d21e1	882	pbuf_free(headMB);
ICTFBI	0:4edb816d21e1	883	return ERR_VAL;
ICTFBI	0:4edb816d21e1	884	}
ICTFBI	0:4edb816d21e1	885	}
ICTFBI	0:4edb816d21e1	886	#endif /* VJ_SUPPORT */
ICTFBI	0:4edb816d21e1	887
ICTFBI	0:4edb816d21e1	888	tailMB = headMB;
ICTFBI	0:4edb816d21e1	889
ICTFBI	0:4edb816d21e1	890	/* Build the PPP header. */
ICTFBI	0:4edb816d21e1	891	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
ICTFBI	0:4edb816d21e1	892	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
ICTFBI	0:4edb816d21e1	893	}
ICTFBI	0:4edb816d21e1	894
ICTFBI	0:4edb816d21e1	895	pc->lastXMit = sys_jiffies();
ICTFBI	0:4edb816d21e1	896	if (!pc->accomp) {
ICTFBI	0:4edb816d21e1	897	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
ICTFBI	0:4edb816d21e1	898	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
ICTFBI	0:4edb816d21e1	899	fcsOut = PPP_FCS(fcsOut, PPP_UI);
ICTFBI	0:4edb816d21e1	900	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
ICTFBI	0:4edb816d21e1	901	}
ICTFBI	0:4edb816d21e1	902	if (!pc->pcomp \|\| protocol > 0xFF) {
ICTFBI	0:4edb816d21e1	903	c = (protocol >> 8) & 0xFF;
ICTFBI	0:4edb816d21e1	904	fcsOut = PPP_FCS(fcsOut, c);
ICTFBI	0:4edb816d21e1	905	tailMB = pppAppend(c, tailMB, &pc->outACCM);
ICTFBI	0:4edb816d21e1	906	}
ICTFBI	0:4edb816d21e1	907	c = protocol & 0xFF;
ICTFBI	0:4edb816d21e1	908	fcsOut = PPP_FCS(fcsOut, c);
ICTFBI	0:4edb816d21e1	909	tailMB = pppAppend(c, tailMB, &pc->outACCM);
ICTFBI	0:4edb816d21e1	910
ICTFBI	0:4edb816d21e1	911	/* Load packet. */
ICTFBI	0:4edb816d21e1	912	for(p = pb; p; p = p->next) {
ICTFBI	0:4edb816d21e1	913	int n;
ICTFBI	0:4edb816d21e1	914	u_char *sPtr;
ICTFBI	0:4edb816d21e1	915
ICTFBI	0:4edb816d21e1	916	sPtr = (u_char*)p->payload;
ICTFBI	0:4edb816d21e1	917	n = p->len;
ICTFBI	0:4edb816d21e1	918	while (n-- > 0) {
ICTFBI	0:4edb816d21e1	919	c = *sPtr++;
ICTFBI	0:4edb816d21e1	920
ICTFBI	0:4edb816d21e1	921	/* Update FCS before checking for special characters. */
ICTFBI	0:4edb816d21e1	922	fcsOut = PPP_FCS(fcsOut, c);
ICTFBI	0:4edb816d21e1	923
ICTFBI	0:4edb816d21e1	924	/* Copy to output buffer escaping special characters. */
ICTFBI	0:4edb816d21e1	925	tailMB = pppAppend(c, tailMB, &pc->outACCM);
ICTFBI	0:4edb816d21e1	926	}
ICTFBI	0:4edb816d21e1	927	}
ICTFBI	0:4edb816d21e1	928
ICTFBI	0:4edb816d21e1	929	/* Add FCS and trailing flag. */
ICTFBI	0:4edb816d21e1	930	c = ~fcsOut & 0xFF;
ICTFBI	0:4edb816d21e1	931	tailMB = pppAppend(c, tailMB, &pc->outACCM);
ICTFBI	0:4edb816d21e1	932	c = (~fcsOut >> 8) & 0xFF;
ICTFBI	0:4edb816d21e1	933	tailMB = pppAppend(c, tailMB, &pc->outACCM);
ICTFBI	0:4edb816d21e1	934	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
ICTFBI	0:4edb816d21e1	935
ICTFBI	0:4edb816d21e1	936	/* If we failed to complete the packet, throw it away. */
ICTFBI	0:4edb816d21e1	937	if (!tailMB) {
ICTFBI	0:4edb816d21e1	938	PPPDEBUG(LOG_WARNING,
ICTFBI	0:4edb816d21e1	939	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
ICTFBI	0:4edb816d21e1	940	pd, protocol));
ICTFBI	0:4edb816d21e1	941	pbuf_free(headMB);
ICTFBI	0:4edb816d21e1	942	LINK_STATS_INC(link.memerr);
ICTFBI	0:4edb816d21e1	943	LINK_STATS_INC(link.drop);
ICTFBI	0:4edb816d21e1	944	snmp_inc_ifoutdiscards(netif);
ICTFBI	0:4edb816d21e1	945	return ERR_MEM;
ICTFBI	0:4edb816d21e1	946	}
ICTFBI	0:4edb816d21e1	947
ICTFBI	0:4edb816d21e1	948	/* Send it. */
ICTFBI	0:4edb816d21e1	949	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
ICTFBI	0:4edb816d21e1	950
ICTFBI	0:4edb816d21e1	951	nPut(pc, headMB);
ICTFBI	0:4edb816d21e1	952	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	953
ICTFBI	0:4edb816d21e1	954	return ERR_OK;
ICTFBI	0:4edb816d21e1	955	}
ICTFBI	0:4edb816d21e1	956
ICTFBI	0:4edb816d21e1	957	/* Get and set parameters for the given connection.
ICTFBI	0:4edb816d21e1	958	* Return 0 on success, an error code on failure. */
ICTFBI	0:4edb816d21e1	959	int
ICTFBI	0:4edb816d21e1	960	pppIOCtl(int pd, int cmd, void *arg)
ICTFBI	0:4edb816d21e1	961	{
ICTFBI	0:4edb816d21e1	962	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	963	int st = 0;
ICTFBI	0:4edb816d21e1	964
ICTFBI	0:4edb816d21e1	965	if (pd < 0 \|\| pd >= NUM_PPP) {
ICTFBI	0:4edb816d21e1	966	st = PPPERR_PARAM;
ICTFBI	0:4edb816d21e1	967	} else {
ICTFBI	0:4edb816d21e1	968	switch(cmd) {
ICTFBI	0:4edb816d21e1	969	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
ICTFBI	0:4edb816d21e1	970	if (arg) {
ICTFBI	0:4edb816d21e1	971	(int )arg = (int)(pc->if_up);
ICTFBI	0:4edb816d21e1	972	} else {
ICTFBI	0:4edb816d21e1	973	st = PPPERR_PARAM;
ICTFBI	0:4edb816d21e1	974	}
ICTFBI	0:4edb816d21e1	975	break;
ICTFBI	0:4edb816d21e1	976	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
ICTFBI	0:4edb816d21e1	977	if (arg) {
ICTFBI	0:4edb816d21e1	978	pc->errCode = (int )arg;
ICTFBI	0:4edb816d21e1	979	} else {
ICTFBI	0:4edb816d21e1	980	st = PPPERR_PARAM;
ICTFBI	0:4edb816d21e1	981	}
ICTFBI	0:4edb816d21e1	982	break;
ICTFBI	0:4edb816d21e1	983	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
ICTFBI	0:4edb816d21e1	984	if (arg) {
ICTFBI	0:4edb816d21e1	985	(int )arg = (int)(pc->errCode);
ICTFBI	0:4edb816d21e1	986	} else {
ICTFBI	0:4edb816d21e1	987	st = PPPERR_PARAM;
ICTFBI	0:4edb816d21e1	988	}
ICTFBI	0:4edb816d21e1	989	break;
ICTFBI	0:4edb816d21e1	990	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	991	case PPPCTLG_FD: /* Get the fd associated with the ppp */
ICTFBI	0:4edb816d21e1	992	if (arg) {
ICTFBI	0:4edb816d21e1	993	(sio_fd_t )arg = pc->fd;
ICTFBI	0:4edb816d21e1	994	} else {
ICTFBI	0:4edb816d21e1	995	st = PPPERR_PARAM;
ICTFBI	0:4edb816d21e1	996	}
ICTFBI	0:4edb816d21e1	997	break;
ICTFBI	0:4edb816d21e1	998	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	999	default:
ICTFBI	0:4edb816d21e1	1000	st = PPPERR_PARAM;
ICTFBI	0:4edb816d21e1	1001	break;
ICTFBI	0:4edb816d21e1	1002	}
ICTFBI	0:4edb816d21e1	1003	}
ICTFBI	0:4edb816d21e1	1004
ICTFBI	0:4edb816d21e1	1005	return st;
ICTFBI	0:4edb816d21e1	1006	}
ICTFBI	0:4edb816d21e1	1007
ICTFBI	0:4edb816d21e1	1008	/*
ICTFBI	0:4edb816d21e1	1009	* Return the Maximum Transmission Unit for the given PPP connection.
ICTFBI	0:4edb816d21e1	1010	*/
ICTFBI	0:4edb816d21e1	1011	u_short
ICTFBI	0:4edb816d21e1	1012	pppMTU(int pd)
ICTFBI	0:4edb816d21e1	1013	{
ICTFBI	0:4edb816d21e1	1014	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	1015	u_short st;
ICTFBI	0:4edb816d21e1	1016
ICTFBI	0:4edb816d21e1	1017	/* Validate parameters. */
ICTFBI	0:4edb816d21e1	1018	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
ICTFBI	0:4edb816d21e1	1019	st = 0;
ICTFBI	0:4edb816d21e1	1020	} else {
ICTFBI	0:4edb816d21e1	1021	st = pc->mtu;
ICTFBI	0:4edb816d21e1	1022	}
ICTFBI	0:4edb816d21e1	1023
ICTFBI	0:4edb816d21e1	1024	return st;
ICTFBI	0:4edb816d21e1	1025	}
ICTFBI	0:4edb816d21e1	1026
ICTFBI	0:4edb816d21e1	1027	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	1028	int
ICTFBI	0:4edb816d21e1	1029	pppWriteOverEthernet(int pd, const u_char *s, int n)
ICTFBI	0:4edb816d21e1	1030	{
ICTFBI	0:4edb816d21e1	1031	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	1032	struct pbuf *pb;
ICTFBI	0:4edb816d21e1	1033
ICTFBI	0:4edb816d21e1	1034	/* skip address & flags */
ICTFBI	0:4edb816d21e1	1035	s += 2;
ICTFBI	0:4edb816d21e1	1036	n -= 2;
ICTFBI	0:4edb816d21e1	1037
ICTFBI	0:4edb816d21e1	1038	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
ICTFBI	0:4edb816d21e1	1039	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
ICTFBI	0:4edb816d21e1	1040	if(!pb) {
ICTFBI	0:4edb816d21e1	1041	LINK_STATS_INC(link.memerr);
ICTFBI	0:4edb816d21e1	1042	LINK_STATS_INC(link.proterr);
ICTFBI	0:4edb816d21e1	1043	snmp_inc_ifoutdiscards(&pc->netif);
ICTFBI	0:4edb816d21e1	1044	return PPPERR_ALLOC;
ICTFBI	0:4edb816d21e1	1045	}
ICTFBI	0:4edb816d21e1	1046
ICTFBI	0:4edb816d21e1	1047	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
ICTFBI	0:4edb816d21e1	1048
ICTFBI	0:4edb816d21e1	1049	pc->lastXMit = sys_jiffies();
ICTFBI	0:4edb816d21e1	1050
ICTFBI	0:4edb816d21e1	1051	MEMCPY(pb->payload, s, n);
ICTFBI	0:4edb816d21e1	1052
ICTFBI	0:4edb816d21e1	1053	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
ICTFBI	0:4edb816d21e1	1054	LINK_STATS_INC(link.err);
ICTFBI	0:4edb816d21e1	1055	snmp_inc_ifoutdiscards(&pc->netif);
ICTFBI	0:4edb816d21e1	1056	return PPPERR_DEVICE;
ICTFBI	0:4edb816d21e1	1057	}
ICTFBI	0:4edb816d21e1	1058
ICTFBI	0:4edb816d21e1	1059	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
ICTFBI	0:4edb816d21e1	1060	snmp_inc_ifoutucastpkts(&pc->netif);
ICTFBI	0:4edb816d21e1	1061	LINK_STATS_INC(link.xmit);
ICTFBI	0:4edb816d21e1	1062	return PPPERR_NONE;
ICTFBI	0:4edb816d21e1	1063	}
ICTFBI	0:4edb816d21e1	1064	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	1065
ICTFBI	0:4edb816d21e1	1066	/*
ICTFBI	0:4edb816d21e1	1067	* Write n characters to a ppp link.
ICTFBI	0:4edb816d21e1	1068	* RETURN: >= 0 Number of characters written
ICTFBI	0:4edb816d21e1	1069	* -1 Failed to write to device
ICTFBI	0:4edb816d21e1	1070	*/
ICTFBI	0:4edb816d21e1	1071	int
ICTFBI	0:4edb816d21e1	1072	pppWrite(int pd, const u_char *s, int n)
ICTFBI	0:4edb816d21e1	1073	{
ICTFBI	0:4edb816d21e1	1074	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	1075	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	1076	u_char c;
ICTFBI	0:4edb816d21e1	1077	u_int fcsOut;
ICTFBI	0:4edb816d21e1	1078	struct pbuf headMB, tailMB;
ICTFBI	0:4edb816d21e1	1079	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	1080
ICTFBI	0:4edb816d21e1	1081	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	1082	if(pc->ethif) {
ICTFBI	0:4edb816d21e1	1083	return pppWriteOverEthernet(pd, s, n);
ICTFBI	0:4edb816d21e1	1084	}
ICTFBI	0:4edb816d21e1	1085	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	1086
ICTFBI	0:4edb816d21e1	1087	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	1088	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
ICTFBI	0:4edb816d21e1	1089	if (headMB == NULL) {
ICTFBI	0:4edb816d21e1	1090	LINK_STATS_INC(link.memerr);
ICTFBI	0:4edb816d21e1	1091	LINK_STATS_INC(link.proterr);
ICTFBI	0:4edb816d21e1	1092	snmp_inc_ifoutdiscards(&pc->netif);
ICTFBI	0:4edb816d21e1	1093	return PPPERR_ALLOC;
ICTFBI	0:4edb816d21e1	1094	}
ICTFBI	0:4edb816d21e1	1095
ICTFBI	0:4edb816d21e1	1096	tailMB = headMB;
ICTFBI	0:4edb816d21e1	1097
ICTFBI	0:4edb816d21e1	1098	/* If the link has been idle, we'll send a fresh flag character to
ICTFBI	0:4edb816d21e1	1099	* flush any noise. */
ICTFBI	0:4edb816d21e1	1100	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
ICTFBI	0:4edb816d21e1	1101	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
ICTFBI	0:4edb816d21e1	1102	}
ICTFBI	0:4edb816d21e1	1103	pc->lastXMit = sys_jiffies();
ICTFBI	0:4edb816d21e1	1104
ICTFBI	0:4edb816d21e1	1105	fcsOut = PPP_INITFCS;
ICTFBI	0:4edb816d21e1	1106	/* Load output buffer. */
ICTFBI	0:4edb816d21e1	1107	while (n-- > 0) {
ICTFBI	0:4edb816d21e1	1108	c = *s++;
ICTFBI	0:4edb816d21e1	1109
ICTFBI	0:4edb816d21e1	1110	/* Update FCS before checking for special characters. */
ICTFBI	0:4edb816d21e1	1111	fcsOut = PPP_FCS(fcsOut, c);
ICTFBI	0:4edb816d21e1	1112
ICTFBI	0:4edb816d21e1	1113	/* Copy to output buffer escaping special characters. */
ICTFBI	0:4edb816d21e1	1114	tailMB = pppAppend(c, tailMB, &pc->outACCM);
ICTFBI	0:4edb816d21e1	1115	}
ICTFBI	0:4edb816d21e1	1116
ICTFBI	0:4edb816d21e1	1117	/* Add FCS and trailing flag. */
ICTFBI	0:4edb816d21e1	1118	c = ~fcsOut & 0xFF;
ICTFBI	0:4edb816d21e1	1119	tailMB = pppAppend(c, tailMB, &pc->outACCM);
ICTFBI	0:4edb816d21e1	1120	c = (~fcsOut >> 8) & 0xFF;
ICTFBI	0:4edb816d21e1	1121	tailMB = pppAppend(c, tailMB, &pc->outACCM);
ICTFBI	0:4edb816d21e1	1122	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
ICTFBI	0:4edb816d21e1	1123
ICTFBI	0:4edb816d21e1	1124	/* If we failed to complete the packet, throw it away.
ICTFBI	0:4edb816d21e1	1125	* Otherwise send it. */
ICTFBI	0:4edb816d21e1	1126	if (!tailMB) {
ICTFBI	0:4edb816d21e1	1127	PPPDEBUG(LOG_WARNING,
ICTFBI	0:4edb816d21e1	1128	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
ICTFBI	0:4edb816d21e1	1129	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
ICTFBI	0:4edb816d21e1	1130	pbuf_free(headMB);
ICTFBI	0:4edb816d21e1	1131	LINK_STATS_INC(link.memerr);
ICTFBI	0:4edb816d21e1	1132	LINK_STATS_INC(link.proterr);
ICTFBI	0:4edb816d21e1	1133	snmp_inc_ifoutdiscards(&pc->netif);
ICTFBI	0:4edb816d21e1	1134	return PPPERR_ALLOC;
ICTFBI	0:4edb816d21e1	1135	}
ICTFBI	0:4edb816d21e1	1136
ICTFBI	0:4edb816d21e1	1137	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
ICTFBI	0:4edb816d21e1	1138	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
ICTFBI	0:4edb816d21e1	1139	nPut(pc, headMB);
ICTFBI	0:4edb816d21e1	1140	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	1141
ICTFBI	0:4edb816d21e1	1142	return PPPERR_NONE;
ICTFBI	0:4edb816d21e1	1143	}
ICTFBI	0:4edb816d21e1	1144
ICTFBI	0:4edb816d21e1	1145	/*
ICTFBI	0:4edb816d21e1	1146	* ppp_send_config - configure the transmit characteristics of
ICTFBI	0:4edb816d21e1	1147	* the ppp interface.
ICTFBI	0:4edb816d21e1	1148	*/
ICTFBI	0:4edb816d21e1	1149	void
ICTFBI	0:4edb816d21e1	1150	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
ICTFBI	0:4edb816d21e1	1151	{
ICTFBI	0:4edb816d21e1	1152	PPPControl *pc = &pppControl[unit];
ICTFBI	0:4edb816d21e1	1153	int i;
ICTFBI	0:4edb816d21e1	1154
ICTFBI	0:4edb816d21e1	1155	pc->mtu = mtu;
ICTFBI	0:4edb816d21e1	1156	pc->pcomp = pcomp;
ICTFBI	0:4edb816d21e1	1157	pc->accomp = accomp;
ICTFBI	0:4edb816d21e1	1158
ICTFBI	0:4edb816d21e1	1159	/* Load the ACCM bits for the 32 control codes. */
ICTFBI	0:4edb816d21e1	1160	for (i = 0; i < 32/8; i++) {
ICTFBI	0:4edb816d21e1	1161	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
ICTFBI	0:4edb816d21e1	1162	}
ICTFBI	0:4edb816d21e1	1163	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
ICTFBI	0:4edb816d21e1	1164	unit,
ICTFBI	0:4edb816d21e1	1165	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
ICTFBI	0:4edb816d21e1	1166	}
ICTFBI	0:4edb816d21e1	1167
ICTFBI	0:4edb816d21e1	1168
ICTFBI	0:4edb816d21e1	1169	/*
ICTFBI	0:4edb816d21e1	1170	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
ICTFBI	0:4edb816d21e1	1171	*/
ICTFBI	0:4edb816d21e1	1172	void
ICTFBI	0:4edb816d21e1	1173	ppp_set_xaccm(int unit, ext_accm *accm)
ICTFBI	0:4edb816d21e1	1174	{
ICTFBI	0:4edb816d21e1	1175	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
ICTFBI	0:4edb816d21e1	1176	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
ICTFBI	0:4edb816d21e1	1177	unit,
ICTFBI	0:4edb816d21e1	1178	pppControl[unit].outACCM[0],
ICTFBI	0:4edb816d21e1	1179	pppControl[unit].outACCM[1],
ICTFBI	0:4edb816d21e1	1180	pppControl[unit].outACCM[2],
ICTFBI	0:4edb816d21e1	1181	pppControl[unit].outACCM[3]));
ICTFBI	0:4edb816d21e1	1182	}
ICTFBI	0:4edb816d21e1	1183
ICTFBI	0:4edb816d21e1	1184
ICTFBI	0:4edb816d21e1	1185	/*
ICTFBI	0:4edb816d21e1	1186	* ppp_recv_config - configure the receive-side characteristics of
ICTFBI	0:4edb816d21e1	1187	* the ppp interface.
ICTFBI	0:4edb816d21e1	1188	*/
ICTFBI	0:4edb816d21e1	1189	void
ICTFBI	0:4edb816d21e1	1190	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
ICTFBI	0:4edb816d21e1	1191	{
ICTFBI	0:4edb816d21e1	1192	PPPControl *pc = &pppControl[unit];
ICTFBI	0:4edb816d21e1	1193	int i;
ICTFBI	0:4edb816d21e1	1194	SYS_ARCH_DECL_PROTECT(lev);
ICTFBI	0:4edb816d21e1	1195
ICTFBI	0:4edb816d21e1	1196	LWIP_UNUSED_ARG(accomp);
ICTFBI	0:4edb816d21e1	1197	LWIP_UNUSED_ARG(pcomp);
ICTFBI	0:4edb816d21e1	1198	LWIP_UNUSED_ARG(mru);
ICTFBI	0:4edb816d21e1	1199
ICTFBI	0:4edb816d21e1	1200	/* Load the ACCM bits for the 32 control codes. */
ICTFBI	0:4edb816d21e1	1201	SYS_ARCH_PROTECT(lev);
ICTFBI	0:4edb816d21e1	1202	for (i = 0; i < 32 / 8; i++) {
ICTFBI	0:4edb816d21e1	1203	/* @todo: does this work? ext_accm has been modified from pppd! */
ICTFBI	0:4edb816d21e1	1204	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
ICTFBI	0:4edb816d21e1	1205	}
ICTFBI	0:4edb816d21e1	1206	SYS_ARCH_UNPROTECT(lev);
ICTFBI	0:4edb816d21e1	1207	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
ICTFBI	0:4edb816d21e1	1208	unit,
ICTFBI	0:4edb816d21e1	1209	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
ICTFBI	0:4edb816d21e1	1210	}
ICTFBI	0:4edb816d21e1	1211
ICTFBI	0:4edb816d21e1	1212	#if 0
ICTFBI	0:4edb816d21e1	1213	/*
ICTFBI	0:4edb816d21e1	1214	* ccp_test - ask kernel whether a given compression method
ICTFBI	0:4edb816d21e1	1215	* is acceptable for use. Returns 1 if the method and parameters
ICTFBI	0:4edb816d21e1	1216	* are OK, 0 if the method is known but the parameters are not OK
ICTFBI	0:4edb816d21e1	1217	* (e.g. code size should be reduced), or -1 if the method is unknown.
ICTFBI	0:4edb816d21e1	1218	*/
ICTFBI	0:4edb816d21e1	1219	int
ICTFBI	0:4edb816d21e1	1220	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
ICTFBI	0:4edb816d21e1	1221	{
ICTFBI	0:4edb816d21e1	1222	return 0; /* XXX Currently no compression. */
ICTFBI	0:4edb816d21e1	1223	}
ICTFBI	0:4edb816d21e1	1224
ICTFBI	0:4edb816d21e1	1225	/*
ICTFBI	0:4edb816d21e1	1226	* ccp_flags_set - inform kernel about the current state of CCP.
ICTFBI	0:4edb816d21e1	1227	*/
ICTFBI	0:4edb816d21e1	1228	void
ICTFBI	0:4edb816d21e1	1229	ccp_flags_set(int unit, int isopen, int isup)
ICTFBI	0:4edb816d21e1	1230	{
ICTFBI	0:4edb816d21e1	1231	/* XXX */
ICTFBI	0:4edb816d21e1	1232	}
ICTFBI	0:4edb816d21e1	1233
ICTFBI	0:4edb816d21e1	1234	/*
ICTFBI	0:4edb816d21e1	1235	* ccp_fatal_error - returns 1 if decompression was disabled as a
ICTFBI	0:4edb816d21e1	1236	* result of an error detected after decompression of a packet,
ICTFBI	0:4edb816d21e1	1237	* 0 otherwise. This is necessary because of patent nonsense.
ICTFBI	0:4edb816d21e1	1238	*/
ICTFBI	0:4edb816d21e1	1239	int
ICTFBI	0:4edb816d21e1	1240	ccp_fatal_error(int unit)
ICTFBI	0:4edb816d21e1	1241	{
ICTFBI	0:4edb816d21e1	1242	/* XXX */
ICTFBI	0:4edb816d21e1	1243	return 0;
ICTFBI	0:4edb816d21e1	1244	}
ICTFBI	0:4edb816d21e1	1245	#endif
ICTFBI	0:4edb816d21e1	1246
ICTFBI	0:4edb816d21e1	1247	/*
ICTFBI	0:4edb816d21e1	1248	* get_idle_time - return how long the link has been idle.
ICTFBI	0:4edb816d21e1	1249	*/
ICTFBI	0:4edb816d21e1	1250	int
ICTFBI	0:4edb816d21e1	1251	get_idle_time(int u, struct ppp_idle *ip)
ICTFBI	0:4edb816d21e1	1252	{
ICTFBI	0:4edb816d21e1	1253	/* XXX */
ICTFBI	0:4edb816d21e1	1254	LWIP_UNUSED_ARG(u);
ICTFBI	0:4edb816d21e1	1255	LWIP_UNUSED_ARG(ip);
ICTFBI	0:4edb816d21e1	1256
ICTFBI	0:4edb816d21e1	1257	return 0;
ICTFBI	0:4edb816d21e1	1258	}
ICTFBI	0:4edb816d21e1	1259
ICTFBI	0:4edb816d21e1	1260
ICTFBI	0:4edb816d21e1	1261	/*
ICTFBI	0:4edb816d21e1	1262	* Return user specified netmask, modified by any mask we might determine
ICTFBI	0:4edb816d21e1	1263	* for address `addr' (in network byte order).
ICTFBI	0:4edb816d21e1	1264	* Here we scan through the system's list of interfaces, looking for
ICTFBI	0:4edb816d21e1	1265	* any non-point-to-point interfaces which might appear to be on the same
ICTFBI	0:4edb816d21e1	1266	* network as `addr'. If we find any, we OR in their netmask to the
ICTFBI	0:4edb816d21e1	1267	* user-specified netmask.
ICTFBI	0:4edb816d21e1	1268	*/
ICTFBI	0:4edb816d21e1	1269	u32_t
ICTFBI	0:4edb816d21e1	1270	GetMask(u32_t addr)
ICTFBI	0:4edb816d21e1	1271	{
ICTFBI	0:4edb816d21e1	1272	u32_t mask, nmask;
ICTFBI	0:4edb816d21e1	1273
ICTFBI	0:4edb816d21e1	1274	htonl(addr);
ICTFBI	0:4edb816d21e1	1275	if (IP_CLASSA(addr)) { /* determine network mask for address class */
ICTFBI	0:4edb816d21e1	1276	nmask = IP_CLASSA_NET;
ICTFBI	0:4edb816d21e1	1277	} else if (IP_CLASSB(addr)) {
ICTFBI	0:4edb816d21e1	1278	nmask = IP_CLASSB_NET;
ICTFBI	0:4edb816d21e1	1279	} else {
ICTFBI	0:4edb816d21e1	1280	nmask = IP_CLASSC_NET;
ICTFBI	0:4edb816d21e1	1281	}
ICTFBI	0:4edb816d21e1	1282
ICTFBI	0:4edb816d21e1	1283	/* class D nets are disallowed by bad_ip_adrs */
ICTFBI	0:4edb816d21e1	1284	mask = subnetMask \| htonl(nmask);
ICTFBI	0:4edb816d21e1	1285
ICTFBI	0:4edb816d21e1	1286	/* XXX
ICTFBI	0:4edb816d21e1	1287	* Scan through the system's network interfaces.
ICTFBI	0:4edb816d21e1	1288	* Get each netmask and OR them into our mask.
ICTFBI	0:4edb816d21e1	1289	*/
ICTFBI	0:4edb816d21e1	1290
ICTFBI	0:4edb816d21e1	1291	return mask;
ICTFBI	0:4edb816d21e1	1292	}
ICTFBI	0:4edb816d21e1	1293
ICTFBI	0:4edb816d21e1	1294	/*
ICTFBI	0:4edb816d21e1	1295	* sifvjcomp - config tcp header compression
ICTFBI	0:4edb816d21e1	1296	*/
ICTFBI	0:4edb816d21e1	1297	int
ICTFBI	0:4edb816d21e1	1298	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
ICTFBI	0:4edb816d21e1	1299	{
ICTFBI	0:4edb816d21e1	1300	#if PPPOS_SUPPORT && VJ_SUPPORT
ICTFBI	0:4edb816d21e1	1301	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	1302
ICTFBI	0:4edb816d21e1	1303	pc->vjEnabled = vjcomp;
ICTFBI	0:4edb816d21e1	1304	pc->vjComp.compressSlot = cidcomp;
ICTFBI	0:4edb816d21e1	1305	pc->vjComp.maxSlotIndex = maxcid;
ICTFBI	0:4edb816d21e1	1306	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
ICTFBI	0:4edb816d21e1	1307	vjcomp, cidcomp, maxcid));
ICTFBI	0:4edb816d21e1	1308	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
ICTFBI	0:4edb816d21e1	1309	LWIP_UNUSED_ARG(pd);
ICTFBI	0:4edb816d21e1	1310	LWIP_UNUSED_ARG(vjcomp);
ICTFBI	0:4edb816d21e1	1311	LWIP_UNUSED_ARG(cidcomp);
ICTFBI	0:4edb816d21e1	1312	LWIP_UNUSED_ARG(maxcid);
ICTFBI	0:4edb816d21e1	1313	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
ICTFBI	0:4edb816d21e1	1314
ICTFBI	0:4edb816d21e1	1315	return 0;
ICTFBI	0:4edb816d21e1	1316	}
ICTFBI	0:4edb816d21e1	1317
ICTFBI	0:4edb816d21e1	1318	/*
ICTFBI	0:4edb816d21e1	1319	* pppifNetifInit - netif init callback
ICTFBI	0:4edb816d21e1	1320	*/
ICTFBI	0:4edb816d21e1	1321	static err_t
ICTFBI	0:4edb816d21e1	1322	pppifNetifInit(struct netif *netif)
ICTFBI	0:4edb816d21e1	1323	{
ICTFBI	0:4edb816d21e1	1324	netif->name[0] = 'p';
ICTFBI	0:4edb816d21e1	1325	netif->name[1] = 'p';
ICTFBI	0:4edb816d21e1	1326	netif->output = pppifOutput;
ICTFBI	0:4edb816d21e1	1327	netif->mtu = pppMTU((int)(size_t)netif->state);
ICTFBI	0:4edb816d21e1	1328	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
ICTFBI	0:4edb816d21e1	1329	#if LWIP_NETIF_HOSTNAME
ICTFBI	0:4edb816d21e1	1330	/* @todo: Initialize interface hostname */
ICTFBI	0:4edb816d21e1	1331	/* netif_set_hostname(netif, "lwip"); */
ICTFBI	0:4edb816d21e1	1332	#endif /* LWIP_NETIF_HOSTNAME */
ICTFBI	0:4edb816d21e1	1333	return ERR_OK;
ICTFBI	0:4edb816d21e1	1334	}
ICTFBI	0:4edb816d21e1	1335
ICTFBI	0:4edb816d21e1	1336
ICTFBI	0:4edb816d21e1	1337	/*
ICTFBI	0:4edb816d21e1	1338	* sifup - Config the interface up and enable IP packets to pass.
ICTFBI	0:4edb816d21e1	1339	*/
ICTFBI	0:4edb816d21e1	1340	int
ICTFBI	0:4edb816d21e1	1341	sifup(int pd)
ICTFBI	0:4edb816d21e1	1342	{
ICTFBI	0:4edb816d21e1	1343	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	1344	int st = 1;
ICTFBI	0:4edb816d21e1	1345
ICTFBI	0:4edb816d21e1	1346	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
ICTFBI	0:4edb816d21e1	1347	st = 0;
ICTFBI	0:4edb816d21e1	1348	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
ICTFBI	0:4edb816d21e1	1349	} else {
ICTFBI	0:4edb816d21e1	1350	netif_remove(&pc->netif);
ICTFBI	0:4edb816d21e1	1351	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
ICTFBI	0:4edb816d21e1	1352	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
ICTFBI	0:4edb816d21e1	1353	netif_set_up(&pc->netif);
ICTFBI	0:4edb816d21e1	1354	pc->if_up = 1;
ICTFBI	0:4edb816d21e1	1355	pc->errCode = PPPERR_NONE;
ICTFBI	0:4edb816d21e1	1356
ICTFBI	0:4edb816d21e1	1357	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
ICTFBI	0:4edb816d21e1	1358	if (pc->linkStatusCB) {
ICTFBI	0:4edb816d21e1	1359	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
ICTFBI	0:4edb816d21e1	1360	}
ICTFBI	0:4edb816d21e1	1361	} else {
ICTFBI	0:4edb816d21e1	1362	st = 0;
ICTFBI	0:4edb816d21e1	1363	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
ICTFBI	0:4edb816d21e1	1364	}
ICTFBI	0:4edb816d21e1	1365	}
ICTFBI	0:4edb816d21e1	1366
ICTFBI	0:4edb816d21e1	1367	return st;
ICTFBI	0:4edb816d21e1	1368	}
ICTFBI	0:4edb816d21e1	1369
ICTFBI	0:4edb816d21e1	1370	/*
ICTFBI	0:4edb816d21e1	1371	* sifnpmode - Set the mode for handling packets for a given NP.
ICTFBI	0:4edb816d21e1	1372	*/
ICTFBI	0:4edb816d21e1	1373	int
ICTFBI	0:4edb816d21e1	1374	sifnpmode(int u, int proto, enum NPmode mode)
ICTFBI	0:4edb816d21e1	1375	{
ICTFBI	0:4edb816d21e1	1376	LWIP_UNUSED_ARG(u);
ICTFBI	0:4edb816d21e1	1377	LWIP_UNUSED_ARG(proto);
ICTFBI	0:4edb816d21e1	1378	LWIP_UNUSED_ARG(mode);
ICTFBI	0:4edb816d21e1	1379	return 0;
ICTFBI	0:4edb816d21e1	1380	}
ICTFBI	0:4edb816d21e1	1381
ICTFBI	0:4edb816d21e1	1382	/*
ICTFBI	0:4edb816d21e1	1383	* sifdown - Config the interface down and disable IP.
ICTFBI	0:4edb816d21e1	1384	*/
ICTFBI	0:4edb816d21e1	1385	int
ICTFBI	0:4edb816d21e1	1386	sifdown(int pd)
ICTFBI	0:4edb816d21e1	1387	{
ICTFBI	0:4edb816d21e1	1388	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	1389	int st = 1;
ICTFBI	0:4edb816d21e1	1390
ICTFBI	0:4edb816d21e1	1391	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
ICTFBI	0:4edb816d21e1	1392	st = 0;
ICTFBI	0:4edb816d21e1	1393	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
ICTFBI	0:4edb816d21e1	1394	} else {
ICTFBI	0:4edb816d21e1	1395	pc->if_up = 0;
ICTFBI	0:4edb816d21e1	1396	/* make sure the netif status callback is called */
ICTFBI	0:4edb816d21e1	1397	netif_set_down(&pc->netif);
ICTFBI	0:4edb816d21e1	1398	netif_remove(&pc->netif);
ICTFBI	0:4edb816d21e1	1399	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
ICTFBI	0:4edb816d21e1	1400	if (pc->linkStatusCB) {
ICTFBI	0:4edb816d21e1	1401	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
ICTFBI	0:4edb816d21e1	1402	}
ICTFBI	0:4edb816d21e1	1403	}
ICTFBI	0:4edb816d21e1	1404	return st;
ICTFBI	0:4edb816d21e1	1405	}
ICTFBI	0:4edb816d21e1	1406
ICTFBI	0:4edb816d21e1	1407	/**
ICTFBI	0:4edb816d21e1	1408	* sifaddr - Config the interface IP addresses and netmask.
ICTFBI	0:4edb816d21e1	1409	* @param pd Interface unit ???
ICTFBI	0:4edb816d21e1	1410	* @param o Our IP address ???
ICTFBI	0:4edb816d21e1	1411	* @param h His IP address ???
ICTFBI	0:4edb816d21e1	1412	* @param m IP subnet mask ???
ICTFBI	0:4edb816d21e1	1413	* @param ns1 Primary DNS
ICTFBI	0:4edb816d21e1	1414	* @param ns2 Secondary DNS
ICTFBI	0:4edb816d21e1	1415	*/
ICTFBI	0:4edb816d21e1	1416	int
ICTFBI	0:4edb816d21e1	1417	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
ICTFBI	0:4edb816d21e1	1418	{
ICTFBI	0:4edb816d21e1	1419	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	1420	int st = 1;
ICTFBI	0:4edb816d21e1	1421
ICTFBI	0:4edb816d21e1	1422	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
ICTFBI	0:4edb816d21e1	1423	st = 0;
ICTFBI	0:4edb816d21e1	1424	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
ICTFBI	0:4edb816d21e1	1425	} else {
ICTFBI	0:4edb816d21e1	1426	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
ICTFBI	0:4edb816d21e1	1427	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
ICTFBI	0:4edb816d21e1	1428	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
ICTFBI	0:4edb816d21e1	1429	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
ICTFBI	0:4edb816d21e1	1430	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
ICTFBI	0:4edb816d21e1	1431	}
ICTFBI	0:4edb816d21e1	1432	return st;
ICTFBI	0:4edb816d21e1	1433	}
ICTFBI	0:4edb816d21e1	1434
ICTFBI	0:4edb816d21e1	1435	/**
ICTFBI	0:4edb816d21e1	1436	* cifaddr - Clear the interface IP addresses, and delete routes
ICTFBI	0:4edb816d21e1	1437	* through the interface if possible.
ICTFBI	0:4edb816d21e1	1438	* @param pd Interface unit ???
ICTFBI	0:4edb816d21e1	1439	* @param o Our IP address ???
ICTFBI	0:4edb816d21e1	1440	* @param h IP broadcast address ???
ICTFBI	0:4edb816d21e1	1441	*/
ICTFBI	0:4edb816d21e1	1442	int
ICTFBI	0:4edb816d21e1	1443	cifaddr( int pd, u32_t o, u32_t h)
ICTFBI	0:4edb816d21e1	1444	{
ICTFBI	0:4edb816d21e1	1445	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	1446	int st = 1;
ICTFBI	0:4edb816d21e1	1447
ICTFBI	0:4edb816d21e1	1448	LWIP_UNUSED_ARG(o);
ICTFBI	0:4edb816d21e1	1449	LWIP_UNUSED_ARG(h);
ICTFBI	0:4edb816d21e1	1450	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
ICTFBI	0:4edb816d21e1	1451	st = 0;
ICTFBI	0:4edb816d21e1	1452	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
ICTFBI	0:4edb816d21e1	1453	} else {
ICTFBI	0:4edb816d21e1	1454	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
ICTFBI	0:4edb816d21e1	1455	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
ICTFBI	0:4edb816d21e1	1456	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
ICTFBI	0:4edb816d21e1	1457	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
ICTFBI	0:4edb816d21e1	1458	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
ICTFBI	0:4edb816d21e1	1459	}
ICTFBI	0:4edb816d21e1	1460	return st;
ICTFBI	0:4edb816d21e1	1461	}
ICTFBI	0:4edb816d21e1	1462
ICTFBI	0:4edb816d21e1	1463	/*
ICTFBI	0:4edb816d21e1	1464	* sifdefaultroute - assign a default route through the address given.
ICTFBI	0:4edb816d21e1	1465	*/
ICTFBI	0:4edb816d21e1	1466	int
ICTFBI	0:4edb816d21e1	1467	sifdefaultroute(int pd, u32_t l, u32_t g)
ICTFBI	0:4edb816d21e1	1468	{
ICTFBI	0:4edb816d21e1	1469	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	1470	int st = 1;
ICTFBI	0:4edb816d21e1	1471
ICTFBI	0:4edb816d21e1	1472	LWIP_UNUSED_ARG(l);
ICTFBI	0:4edb816d21e1	1473	LWIP_UNUSED_ARG(g);
ICTFBI	0:4edb816d21e1	1474
ICTFBI	0:4edb816d21e1	1475	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
ICTFBI	0:4edb816d21e1	1476	st = 0;
ICTFBI	0:4edb816d21e1	1477	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
ICTFBI	0:4edb816d21e1	1478	} else {
ICTFBI	0:4edb816d21e1	1479	netif_set_default(&pc->netif);
ICTFBI	0:4edb816d21e1	1480	}
ICTFBI	0:4edb816d21e1	1481
ICTFBI	0:4edb816d21e1	1482	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
ICTFBI	0:4edb816d21e1	1483
ICTFBI	0:4edb816d21e1	1484	return st;
ICTFBI	0:4edb816d21e1	1485	}
ICTFBI	0:4edb816d21e1	1486
ICTFBI	0:4edb816d21e1	1487	/*
ICTFBI	0:4edb816d21e1	1488	* cifdefaultroute - delete a default route through the address given.
ICTFBI	0:4edb816d21e1	1489	*/
ICTFBI	0:4edb816d21e1	1490	int
ICTFBI	0:4edb816d21e1	1491	cifdefaultroute(int pd, u32_t l, u32_t g)
ICTFBI	0:4edb816d21e1	1492	{
ICTFBI	0:4edb816d21e1	1493	PPPControl *pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	1494	int st = 1;
ICTFBI	0:4edb816d21e1	1495
ICTFBI	0:4edb816d21e1	1496	LWIP_UNUSED_ARG(l);
ICTFBI	0:4edb816d21e1	1497	LWIP_UNUSED_ARG(g);
ICTFBI	0:4edb816d21e1	1498
ICTFBI	0:4edb816d21e1	1499	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
ICTFBI	0:4edb816d21e1	1500	st = 0;
ICTFBI	0:4edb816d21e1	1501	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
ICTFBI	0:4edb816d21e1	1502	} else {
ICTFBI	0:4edb816d21e1	1503	netif_set_default(NULL);
ICTFBI	0:4edb816d21e1	1504	}
ICTFBI	0:4edb816d21e1	1505
ICTFBI	0:4edb816d21e1	1506	return st;
ICTFBI	0:4edb816d21e1	1507	}
ICTFBI	0:4edb816d21e1	1508
ICTFBI	0:4edb816d21e1	1509	/**********************************/
ICTFBI	0:4edb816d21e1	1510	/* LOCAL FUNCTION DEFINITIONS */
ICTFBI	0:4edb816d21e1	1511	/**********************************/
ICTFBI	0:4edb816d21e1	1512
ICTFBI	0:4edb816d21e1	1513	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
ICTFBI	0:4edb816d21e1	1514	/* The main PPP process function. This implements the state machine according
ICTFBI	0:4edb816d21e1	1515	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
ICTFBI	0:4edb816d21e1	1516	static void
ICTFBI	0:4edb816d21e1	1517	pppInputThread(void *arg)
ICTFBI	0:4edb816d21e1	1518	{
ICTFBI	0:4edb816d21e1	1519	int count;
ICTFBI	0:4edb816d21e1	1520	PPPControlRx *pcrx = arg;
ICTFBI	0:4edb816d21e1	1521
ICTFBI	0:4edb816d21e1	1522	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
ICTFBI	0:4edb816d21e1	1523	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
ICTFBI	0:4edb816d21e1	1524	if(count > 0) {
ICTFBI	0:4edb816d21e1	1525	pppInProc(pcrx, pcrx->rxbuf, count);
ICTFBI	0:4edb816d21e1	1526	} else {
ICTFBI	0:4edb816d21e1	1527	/* nothing received, give other tasks a chance to run */
ICTFBI	0:4edb816d21e1	1528	sys_msleep(1);
ICTFBI	0:4edb816d21e1	1529	}
ICTFBI	0:4edb816d21e1	1530	}
ICTFBI	0:4edb816d21e1	1531	}
ICTFBI	0:4edb816d21e1	1532	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
ICTFBI	0:4edb816d21e1	1533
ICTFBI	0:4edb816d21e1	1534	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	1535
ICTFBI	0:4edb816d21e1	1536	void
ICTFBI	0:4edb816d21e1	1537	pppOverEthernetInitFailed(int pd)
ICTFBI	0:4edb816d21e1	1538	{
ICTFBI	0:4edb816d21e1	1539	PPPControl* pc;
ICTFBI	0:4edb816d21e1	1540
ICTFBI	0:4edb816d21e1	1541	pppHup(pd);
ICTFBI	0:4edb816d21e1	1542	pppStop(pd);
ICTFBI	0:4edb816d21e1	1543
ICTFBI	0:4edb816d21e1	1544	pc = &pppControl[pd];
ICTFBI	0:4edb816d21e1	1545	pppoe_destroy(&pc->netif);
ICTFBI	0:4edb816d21e1	1546	pc->openFlag = 0;
ICTFBI	0:4edb816d21e1	1547
ICTFBI	0:4edb816d21e1	1548	if(pc->linkStatusCB) {
ICTFBI	0:4edb816d21e1	1549	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
ICTFBI	0:4edb816d21e1	1550	}
ICTFBI	0:4edb816d21e1	1551	}
ICTFBI	0:4edb816d21e1	1552
ICTFBI	0:4edb816d21e1	1553	static void
ICTFBI	0:4edb816d21e1	1554	pppOverEthernetLinkStatusCB(int pd, int up)
ICTFBI	0:4edb816d21e1	1555	{
ICTFBI	0:4edb816d21e1	1556	if(up) {
ICTFBI	0:4edb816d21e1	1557	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
ICTFBI	0:4edb816d21e1	1558	pppStart(pd);
ICTFBI	0:4edb816d21e1	1559	} else {
ICTFBI	0:4edb816d21e1	1560	pppOverEthernetInitFailed(pd);
ICTFBI	0:4edb816d21e1	1561	}
ICTFBI	0:4edb816d21e1	1562	}
ICTFBI	0:4edb816d21e1	1563	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	1564
ICTFBI	0:4edb816d21e1	1565	struct pbuf *
ICTFBI	0:4edb816d21e1	1566	pppSingleBuf(struct pbuf *p)
ICTFBI	0:4edb816d21e1	1567	{
ICTFBI	0:4edb816d21e1	1568	struct pbuf q, b;
ICTFBI	0:4edb816d21e1	1569	u_char *pl;
ICTFBI	0:4edb816d21e1	1570
ICTFBI	0:4edb816d21e1	1571	if(p->tot_len == p->len) {
ICTFBI	0:4edb816d21e1	1572	return p;
ICTFBI	0:4edb816d21e1	1573	}
ICTFBI	0:4edb816d21e1	1574
ICTFBI	0:4edb816d21e1	1575	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
ICTFBI	0:4edb816d21e1	1576	if(!q) {
ICTFBI	0:4edb816d21e1	1577	PPPDEBUG(LOG_ERR,
ICTFBI	0:4edb816d21e1	1578	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
ICTFBI	0:4edb816d21e1	1579	return p; /* live dangerously */
ICTFBI	0:4edb816d21e1	1580	}
ICTFBI	0:4edb816d21e1	1581
ICTFBI	0:4edb816d21e1	1582	for(b = p, pl = (u_char *) q->payload; b != NULL; b = b->next) {
ICTFBI	0:4edb816d21e1	1583	MEMCPY(pl, b->payload, b->len);
ICTFBI	0:4edb816d21e1	1584	pl += b->len;
ICTFBI	0:4edb816d21e1	1585	}
ICTFBI	0:4edb816d21e1	1586
ICTFBI	0:4edb816d21e1	1587	pbuf_free(p);
ICTFBI	0:4edb816d21e1	1588
ICTFBI	0:4edb816d21e1	1589	return q;
ICTFBI	0:4edb816d21e1	1590	}
ICTFBI	0:4edb816d21e1	1591
ICTFBI	0:4edb816d21e1	1592	struct pppInputHeader {
ICTFBI	0:4edb816d21e1	1593	int unit;
ICTFBI	0:4edb816d21e1	1594	u16_t proto;
ICTFBI	0:4edb816d21e1	1595	};
ICTFBI	0:4edb816d21e1	1596
ICTFBI	0:4edb816d21e1	1597	/*
ICTFBI	0:4edb816d21e1	1598	* Pass the processed input packet to the appropriate handler.
ICTFBI	0:4edb816d21e1	1599	* This function and all handlers run in the context of the tcpip_thread
ICTFBI	0:4edb816d21e1	1600	*/
ICTFBI	0:4edb816d21e1	1601	static void
ICTFBI	0:4edb816d21e1	1602	pppInput(void *arg)
ICTFBI	0:4edb816d21e1	1603	{
ICTFBI	0:4edb816d21e1	1604	struct pbuf nb = (struct pbuf )arg;
ICTFBI	0:4edb816d21e1	1605	u16_t protocol;
ICTFBI	0:4edb816d21e1	1606	int pd;
ICTFBI	0:4edb816d21e1	1607
ICTFBI	0:4edb816d21e1	1608	pd = ((struct pppInputHeader *)nb->payload)->unit;
ICTFBI	0:4edb816d21e1	1609	protocol = ((struct pppInputHeader *)nb->payload)->proto;
ICTFBI	0:4edb816d21e1	1610
ICTFBI	0:4edb816d21e1	1611	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
ICTFBI	0:4edb816d21e1	1612	LWIP_ASSERT("pbuf_header failed\n", 0);
ICTFBI	0:4edb816d21e1	1613	goto drop;
ICTFBI	0:4edb816d21e1	1614	}
ICTFBI	0:4edb816d21e1	1615
ICTFBI	0:4edb816d21e1	1616	LINK_STATS_INC(link.recv);
ICTFBI	0:4edb816d21e1	1617	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
ICTFBI	0:4edb816d21e1	1618	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
ICTFBI	0:4edb816d21e1	1619
ICTFBI	0:4edb816d21e1	1620	/*
ICTFBI	0:4edb816d21e1	1621	* Toss all non-LCP packets unless LCP is OPEN.
ICTFBI	0:4edb816d21e1	1622	* Until we get past the authentication phase, toss all packets
ICTFBI	0:4edb816d21e1	1623	* except LCP, LQR and authentication packets.
ICTFBI	0:4edb816d21e1	1624	*/
ICTFBI	0:4edb816d21e1	1625	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
ICTFBI	0:4edb816d21e1	1626	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
ICTFBI	0:4edb816d21e1	1627	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
ICTFBI	0:4edb816d21e1	1628	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
ICTFBI	0:4edb816d21e1	1629	goto drop;
ICTFBI	0:4edb816d21e1	1630	}
ICTFBI	0:4edb816d21e1	1631	}
ICTFBI	0:4edb816d21e1	1632
ICTFBI	0:4edb816d21e1	1633	switch(protocol) {
ICTFBI	0:4edb816d21e1	1634	case PPP_VJC_COMP: /* VJ compressed TCP */
ICTFBI	0:4edb816d21e1	1635	#if PPPOS_SUPPORT && VJ_SUPPORT
ICTFBI	0:4edb816d21e1	1636	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
ICTFBI	0:4edb816d21e1	1637	/*
ICTFBI	0:4edb816d21e1	1638	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
ICTFBI	0:4edb816d21e1	1639	* pass the result to IP.
ICTFBI	0:4edb816d21e1	1640	*/
ICTFBI	0:4edb816d21e1	1641	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
ICTFBI	0:4edb816d21e1	1642	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
ICTFBI	0:4edb816d21e1	1643	return;
ICTFBI	0:4edb816d21e1	1644	}
ICTFBI	0:4edb816d21e1	1645	/* Something's wrong so drop it. */
ICTFBI	0:4edb816d21e1	1646	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
ICTFBI	0:4edb816d21e1	1647	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
ICTFBI	0:4edb816d21e1	1648	/* No handler for this protocol so drop the packet. */
ICTFBI	0:4edb816d21e1	1649	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
ICTFBI	0:4edb816d21e1	1650	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
ICTFBI	0:4edb816d21e1	1651	break;
ICTFBI	0:4edb816d21e1	1652
ICTFBI	0:4edb816d21e1	1653	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
ICTFBI	0:4edb816d21e1	1654	#if PPPOS_SUPPORT && VJ_SUPPORT
ICTFBI	0:4edb816d21e1	1655	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
ICTFBI	0:4edb816d21e1	1656	/*
ICTFBI	0:4edb816d21e1	1657	* Process the TCP/IP header for VJ header compression and then pass
ICTFBI	0:4edb816d21e1	1658	* the packet to IP.
ICTFBI	0:4edb816d21e1	1659	*/
ICTFBI	0:4edb816d21e1	1660	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
ICTFBI	0:4edb816d21e1	1661	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
ICTFBI	0:4edb816d21e1	1662	return;
ICTFBI	0:4edb816d21e1	1663	}
ICTFBI	0:4edb816d21e1	1664	/* Something's wrong so drop it. */
ICTFBI	0:4edb816d21e1	1665	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
ICTFBI	0:4edb816d21e1	1666	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
ICTFBI	0:4edb816d21e1	1667	/* No handler for this protocol so drop the packet. */
ICTFBI	0:4edb816d21e1	1668	PPPDEBUG(LOG_INFO,
ICTFBI	0:4edb816d21e1	1669	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
ICTFBI	0:4edb816d21e1	1670	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
ICTFBI	0:4edb816d21e1	1671	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
ICTFBI	0:4edb816d21e1	1672	break;
ICTFBI	0:4edb816d21e1	1673
ICTFBI	0:4edb816d21e1	1674	case PPP_IP: /* Internet Protocol */
ICTFBI	0:4edb816d21e1	1675	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
ICTFBI	0:4edb816d21e1	1676	if (pppControl[pd].netif.input) {
ICTFBI	0:4edb816d21e1	1677	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
ICTFBI	0:4edb816d21e1	1678	return;
ICTFBI	0:4edb816d21e1	1679	}
ICTFBI	0:4edb816d21e1	1680	break;
ICTFBI	0:4edb816d21e1	1681
ICTFBI	0:4edb816d21e1	1682	default: {
ICTFBI	0:4edb816d21e1	1683	struct protent *protp;
ICTFBI	0:4edb816d21e1	1684	int i;
ICTFBI	0:4edb816d21e1	1685
ICTFBI	0:4edb816d21e1	1686	/*
ICTFBI	0:4edb816d21e1	1687	* Upcall the proper protocol input routine.
ICTFBI	0:4edb816d21e1	1688	*/
ICTFBI	0:4edb816d21e1	1689	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
ICTFBI	0:4edb816d21e1	1690	if (protp->protocol == protocol && protp->enabled_flag) {
ICTFBI	0:4edb816d21e1	1691	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
ICTFBI	0:4edb816d21e1	1692	nb = pppSingleBuf(nb);
ICTFBI	0:4edb816d21e1	1693	(protp->input)(pd, (u_char )nb->payload, nb->len);
ICTFBI	0:4edb816d21e1	1694	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
ICTFBI	0:4edb816d21e1	1695	goto out;
ICTFBI	0:4edb816d21e1	1696	}
ICTFBI	0:4edb816d21e1	1697	}
ICTFBI	0:4edb816d21e1	1698
ICTFBI	0:4edb816d21e1	1699	/* No handler for this protocol so reject the packet. */
ICTFBI	0:4edb816d21e1	1700	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
ICTFBI	0:4edb816d21e1	1701	if (pbuf_header(nb, sizeof(protocol))) {
ICTFBI	0:4edb816d21e1	1702	LWIP_ASSERT("pbuf_header failed\n", 0);
ICTFBI	0:4edb816d21e1	1703	goto drop;
ICTFBI	0:4edb816d21e1	1704	}
ICTFBI	0:4edb816d21e1	1705	#if BYTE_ORDER == LITTLE_ENDIAN
ICTFBI	0:4edb816d21e1	1706	protocol = htons(protocol);
ICTFBI	0:4edb816d21e1	1707	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
ICTFBI	0:4edb816d21e1	1708	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
ICTFBI	0:4edb816d21e1	1709	lcp_sprotrej(pd, (u_char *)nb->payload, nb->len);
ICTFBI	0:4edb816d21e1	1710	}
ICTFBI	0:4edb816d21e1	1711	break;
ICTFBI	0:4edb816d21e1	1712	}
ICTFBI	0:4edb816d21e1	1713
ICTFBI	0:4edb816d21e1	1714	drop:
ICTFBI	0:4edb816d21e1	1715	LINK_STATS_INC(link.drop);
ICTFBI	0:4edb816d21e1	1716	snmp_inc_ifindiscards(&pppControl[pd].netif);
ICTFBI	0:4edb816d21e1	1717
ICTFBI	0:4edb816d21e1	1718	out:
ICTFBI	0:4edb816d21e1	1719	pbuf_free(nb);
ICTFBI	0:4edb816d21e1	1720	return;
ICTFBI	0:4edb816d21e1	1721	}
ICTFBI	0:4edb816d21e1	1722
ICTFBI	0:4edb816d21e1	1723	#if PPPOS_SUPPORT
ICTFBI	0:4edb816d21e1	1724	/*
ICTFBI	0:4edb816d21e1	1725	* Drop the input packet.
ICTFBI	0:4edb816d21e1	1726	*/
ICTFBI	0:4edb816d21e1	1727	static void
ICTFBI	0:4edb816d21e1	1728	pppDrop(PPPControlRx *pcrx)
ICTFBI	0:4edb816d21e1	1729	{
ICTFBI	0:4edb816d21e1	1730	if (pcrx->inHead != NULL) {
ICTFBI	0:4edb816d21e1	1731	#if 0
ICTFBI	0:4edb816d21e1	1732	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
ICTFBI	0:4edb816d21e1	1733	#endif
ICTFBI	0:4edb816d21e1	1734	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
ICTFBI	0:4edb816d21e1	1735	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
ICTFBI	0:4edb816d21e1	1736	pbuf_free(pcrx->inTail);
ICTFBI	0:4edb816d21e1	1737	}
ICTFBI	0:4edb816d21e1	1738	pbuf_free(pcrx->inHead);
ICTFBI	0:4edb816d21e1	1739	pcrx->inHead = NULL;
ICTFBI	0:4edb816d21e1	1740	pcrx->inTail = NULL;
ICTFBI	0:4edb816d21e1	1741	}
ICTFBI	0:4edb816d21e1	1742	#if VJ_SUPPORT
ICTFBI	0:4edb816d21e1	1743	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
ICTFBI	0:4edb816d21e1	1744	#endif /* VJ_SUPPORT */
ICTFBI	0:4edb816d21e1	1745
ICTFBI	0:4edb816d21e1	1746	LINK_STATS_INC(link.drop);
ICTFBI	0:4edb816d21e1	1747	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
ICTFBI	0:4edb816d21e1	1748	}
ICTFBI	0:4edb816d21e1	1749
ICTFBI	0:4edb816d21e1	1750	/** Pass received raw characters to PPPoS to be decoded. This function is
ICTFBI	0:4edb816d21e1	1751	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
ICTFBI	0:4edb816d21e1	1752	*
ICTFBI	0:4edb816d21e1	1753	* @param pd PPP descriptor index, returned by pppOpen()
ICTFBI	0:4edb816d21e1	1754	* @param data received data
ICTFBI	0:4edb816d21e1	1755	* @param len length of received data
ICTFBI	0:4edb816d21e1	1756	*/
ICTFBI	0:4edb816d21e1	1757	void
ICTFBI	0:4edb816d21e1	1758	pppos_input(int pd, u_char* data, int len)
ICTFBI	0:4edb816d21e1	1759	{
ICTFBI	0:4edb816d21e1	1760	pppInProc(&pppControl[pd].rx, data, len);
ICTFBI	0:4edb816d21e1	1761	}
ICTFBI	0:4edb816d21e1	1762
ICTFBI	0:4edb816d21e1	1763	/**
ICTFBI	0:4edb816d21e1	1764	* Process a received octet string.
ICTFBI	0:4edb816d21e1	1765	*/
ICTFBI	0:4edb816d21e1	1766	static void
ICTFBI	0:4edb816d21e1	1767	pppInProc(PPPControlRx pcrx, u_char s, int l)
ICTFBI	0:4edb816d21e1	1768	{
ICTFBI	0:4edb816d21e1	1769	struct pbuf *nextNBuf;
ICTFBI	0:4edb816d21e1	1770	u_char curChar;
ICTFBI	0:4edb816d21e1	1771	u_char escaped;
ICTFBI	0:4edb816d21e1	1772	SYS_ARCH_DECL_PROTECT(lev);
ICTFBI	0:4edb816d21e1	1773
ICTFBI	0:4edb816d21e1	1774	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
ICTFBI	0:4edb816d21e1	1775	while (l-- > 0) {
ICTFBI	0:4edb816d21e1	1776	curChar = *s++;
ICTFBI	0:4edb816d21e1	1777
ICTFBI	0:4edb816d21e1	1778	SYS_ARCH_PROTECT(lev);
ICTFBI	0:4edb816d21e1	1779	escaped = ESCAPE_P(pcrx->inACCM, curChar);
ICTFBI	0:4edb816d21e1	1780	SYS_ARCH_UNPROTECT(lev);
ICTFBI	0:4edb816d21e1	1781	/* Handle special characters. */
ICTFBI	0:4edb816d21e1	1782	if (escaped) {
ICTFBI	0:4edb816d21e1	1783	/* Check for escape sequences. */
ICTFBI	0:4edb816d21e1	1784	/* XXX Note that this does not handle an escaped 0x5d character which
ICTFBI	0:4edb816d21e1	1785	* would appear as an escape character. Since this is an ASCII ']'
ICTFBI	0:4edb816d21e1	1786	* and there is no reason that I know of to escape it, I won't complicate
ICTFBI	0:4edb816d21e1	1787	* the code to handle this case. GLL */
ICTFBI	0:4edb816d21e1	1788	if (curChar == PPP_ESCAPE) {
ICTFBI	0:4edb816d21e1	1789	pcrx->inEscaped = 1;
ICTFBI	0:4edb816d21e1	1790	/* Check for the flag character. */
ICTFBI	0:4edb816d21e1	1791	} else if (curChar == PPP_FLAG) {
ICTFBI	0:4edb816d21e1	1792	/* If this is just an extra flag character, ignore it. */
ICTFBI	0:4edb816d21e1	1793	if (pcrx->inState <= PDADDRESS) {
ICTFBI	0:4edb816d21e1	1794	/* ignore it */;
ICTFBI	0:4edb816d21e1	1795	/* If we haven't received the packet header, drop what has come in. */
ICTFBI	0:4edb816d21e1	1796	} else if (pcrx->inState < PDDATA) {
ICTFBI	0:4edb816d21e1	1797	PPPDEBUG(LOG_WARNING,
ICTFBI	0:4edb816d21e1	1798	("pppInProc[%d]: Dropping incomplete packet %d\n",
ICTFBI	0:4edb816d21e1	1799	pcrx->pd, pcrx->inState));
ICTFBI	0:4edb816d21e1	1800	LINK_STATS_INC(link.lenerr);
ICTFBI	0:4edb816d21e1	1801	pppDrop(pcrx);
ICTFBI	0:4edb816d21e1	1802	/* If the fcs is invalid, drop the packet. */
ICTFBI	0:4edb816d21e1	1803	} else if (pcrx->inFCS != PPP_GOODFCS) {
ICTFBI	0:4edb816d21e1	1804	PPPDEBUG(LOG_INFO,
ICTFBI	0:4edb816d21e1	1805	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
ICTFBI	0:4edb816d21e1	1806	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
ICTFBI	0:4edb816d21e1	1807	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
ICTFBI	0:4edb816d21e1	1808	LINK_STATS_INC(link.chkerr);
ICTFBI	0:4edb816d21e1	1809	pppDrop(pcrx);
ICTFBI	0:4edb816d21e1	1810	/* Otherwise it's a good packet so pass it on. */
ICTFBI	0:4edb816d21e1	1811	} else {
ICTFBI	0:4edb816d21e1	1812	/* Trim off the checksum. */
ICTFBI	0:4edb816d21e1	1813	if(pcrx->inTail->len >= 2) {
ICTFBI	0:4edb816d21e1	1814	pcrx->inTail->len -= 2;
ICTFBI	0:4edb816d21e1	1815
ICTFBI	0:4edb816d21e1	1816	pcrx->inTail->tot_len = pcrx->inTail->len;
ICTFBI	0:4edb816d21e1	1817	if (pcrx->inTail != pcrx->inHead) {
ICTFBI	0:4edb816d21e1	1818	pbuf_cat(pcrx->inHead, pcrx->inTail);
ICTFBI	0:4edb816d21e1	1819	}
ICTFBI	0:4edb816d21e1	1820	} else {
ICTFBI	0:4edb816d21e1	1821	pcrx->inTail->tot_len = pcrx->inTail->len;
ICTFBI	0:4edb816d21e1	1822	if (pcrx->inTail != pcrx->inHead) {
ICTFBI	0:4edb816d21e1	1823	pbuf_cat(pcrx->inHead, pcrx->inTail);
ICTFBI	0:4edb816d21e1	1824	}
ICTFBI	0:4edb816d21e1	1825
ICTFBI	0:4edb816d21e1	1826	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
ICTFBI	0:4edb816d21e1	1827	}
ICTFBI	0:4edb816d21e1	1828
ICTFBI	0:4edb816d21e1	1829	/* Dispatch the packet thereby consuming it. */
ICTFBI	0:4edb816d21e1	1830	#if PPP_INPROC_MULTITHREADED
ICTFBI	0:4edb816d21e1	1831	if(tcpip_callback_with_block(pppInput, pcrx->inHead, 0) != ERR_OK) {
ICTFBI	0:4edb816d21e1	1832	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
ICTFBI	0:4edb816d21e1	1833	pbuf_free(pcrx->inHead);
ICTFBI	0:4edb816d21e1	1834	LINK_STATS_INC(link.drop);
ICTFBI	0:4edb816d21e1	1835	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
ICTFBI	0:4edb816d21e1	1836	}
ICTFBI	0:4edb816d21e1	1837	#else /* PPP_INPROC_MULTITHREADED */
ICTFBI	0:4edb816d21e1	1838	pppInput(pcrx->inHead);
ICTFBI	0:4edb816d21e1	1839	#endif /* PPP_INPROC_MULTITHREADED */
ICTFBI	0:4edb816d21e1	1840	pcrx->inHead = NULL;
ICTFBI	0:4edb816d21e1	1841	pcrx->inTail = NULL;
ICTFBI	0:4edb816d21e1	1842	}
ICTFBI	0:4edb816d21e1	1843
ICTFBI	0:4edb816d21e1	1844	/* Prepare for a new packet. */
ICTFBI	0:4edb816d21e1	1845	pcrx->inFCS = PPP_INITFCS;
ICTFBI	0:4edb816d21e1	1846	pcrx->inState = PDADDRESS;
ICTFBI	0:4edb816d21e1	1847	pcrx->inEscaped = 0;
ICTFBI	0:4edb816d21e1	1848	/* Other characters are usually control characters that may have
ICTFBI	0:4edb816d21e1	1849	* been inserted by the physical layer so here we just drop them. */
ICTFBI	0:4edb816d21e1	1850	} else {
ICTFBI	0:4edb816d21e1	1851	PPPDEBUG(LOG_WARNING,
ICTFBI	0:4edb816d21e1	1852	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
ICTFBI	0:4edb816d21e1	1853	}
ICTFBI	0:4edb816d21e1	1854	/* Process other characters. */
ICTFBI	0:4edb816d21e1	1855	} else {
ICTFBI	0:4edb816d21e1	1856	/* Unencode escaped characters. */
ICTFBI	0:4edb816d21e1	1857	if (pcrx->inEscaped) {
ICTFBI	0:4edb816d21e1	1858	pcrx->inEscaped = 0;
ICTFBI	0:4edb816d21e1	1859	curChar ^= PPP_TRANS;
ICTFBI	0:4edb816d21e1	1860	}
ICTFBI	0:4edb816d21e1	1861
ICTFBI	0:4edb816d21e1	1862	/* Process character relative to current state. */
ICTFBI	0:4edb816d21e1	1863	switch(pcrx->inState) {
ICTFBI	0:4edb816d21e1	1864	case PDIDLE: /* Idle state - waiting. */
ICTFBI	0:4edb816d21e1	1865	/* Drop the character if it's not 0xff
ICTFBI	0:4edb816d21e1	1866	* we would have processed a flag character above. */
ICTFBI	0:4edb816d21e1	1867	if (curChar != PPP_ALLSTATIONS) {
ICTFBI	0:4edb816d21e1	1868	break;
ICTFBI	0:4edb816d21e1	1869	}
ICTFBI	0:4edb816d21e1	1870
ICTFBI	0:4edb816d21e1	1871	/* Fall through */
ICTFBI	0:4edb816d21e1	1872	case PDSTART: /* Process start flag. */
ICTFBI	0:4edb816d21e1	1873	/* Prepare for a new packet. */
ICTFBI	0:4edb816d21e1	1874	pcrx->inFCS = PPP_INITFCS;
ICTFBI	0:4edb816d21e1	1875
ICTFBI	0:4edb816d21e1	1876	/* Fall through */
ICTFBI	0:4edb816d21e1	1877	case PDADDRESS: /* Process address field. */
ICTFBI	0:4edb816d21e1	1878	if (curChar == PPP_ALLSTATIONS) {
ICTFBI	0:4edb816d21e1	1879	pcrx->inState = PDCONTROL;
ICTFBI	0:4edb816d21e1	1880	break;
ICTFBI	0:4edb816d21e1	1881	}
ICTFBI	0:4edb816d21e1	1882	/* Else assume compressed address and control fields so
ICTFBI	0:4edb816d21e1	1883	* fall through to get the protocol... */
ICTFBI	0:4edb816d21e1	1884	case PDCONTROL: /* Process control field. */
ICTFBI	0:4edb816d21e1	1885	/* If we don't get a valid control code, restart. */
ICTFBI	0:4edb816d21e1	1886	if (curChar == PPP_UI) {
ICTFBI	0:4edb816d21e1	1887	pcrx->inState = PDPROTOCOL1;
ICTFBI	0:4edb816d21e1	1888	break;
ICTFBI	0:4edb816d21e1	1889	}
ICTFBI	0:4edb816d21e1	1890	#if 0
ICTFBI	0:4edb816d21e1	1891	else {
ICTFBI	0:4edb816d21e1	1892	PPPDEBUG(LOG_WARNING,
ICTFBI	0:4edb816d21e1	1893	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
ICTFBI	0:4edb816d21e1	1894	pcrx->inState = PDSTART;
ICTFBI	0:4edb816d21e1	1895	}
ICTFBI	0:4edb816d21e1	1896	#endif
ICTFBI	0:4edb816d21e1	1897	case PDPROTOCOL1: /* Process protocol field 1. */
ICTFBI	0:4edb816d21e1	1898	/* If the lower bit is set, this is the end of the protocol
ICTFBI	0:4edb816d21e1	1899	* field. */
ICTFBI	0:4edb816d21e1	1900	if (curChar & 1) {
ICTFBI	0:4edb816d21e1	1901	pcrx->inProtocol = curChar;
ICTFBI	0:4edb816d21e1	1902	pcrx->inState = PDDATA;
ICTFBI	0:4edb816d21e1	1903	} else {
ICTFBI	0:4edb816d21e1	1904	pcrx->inProtocol = (u_int)curChar << 8;
ICTFBI	0:4edb816d21e1	1905	pcrx->inState = PDPROTOCOL2;
ICTFBI	0:4edb816d21e1	1906	}
ICTFBI	0:4edb816d21e1	1907	break;
ICTFBI	0:4edb816d21e1	1908	case PDPROTOCOL2: /* Process protocol field 2. */
ICTFBI	0:4edb816d21e1	1909	pcrx->inProtocol \|= curChar;
ICTFBI	0:4edb816d21e1	1910	pcrx->inState = PDDATA;
ICTFBI	0:4edb816d21e1	1911	break;
ICTFBI	0:4edb816d21e1	1912	case PDDATA: /* Process data byte. */
ICTFBI	0:4edb816d21e1	1913	/* Make space to receive processed data. */
ICTFBI	0:4edb816d21e1	1914	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
ICTFBI	0:4edb816d21e1	1915	if(pcrx->inTail) {
ICTFBI	0:4edb816d21e1	1916	pcrx->inTail->tot_len = pcrx->inTail->len;
ICTFBI	0:4edb816d21e1	1917	if (pcrx->inTail != pcrx->inHead) {
ICTFBI	0:4edb816d21e1	1918	pbuf_cat(pcrx->inHead, pcrx->inTail);
ICTFBI	0:4edb816d21e1	1919	}
ICTFBI	0:4edb816d21e1	1920	}
ICTFBI	0:4edb816d21e1	1921	/* If we haven't started a packet, we need a packet header. */
ICTFBI	0:4edb816d21e1	1922	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
ICTFBI	0:4edb816d21e1	1923	if (nextNBuf == NULL) {
ICTFBI	0:4edb816d21e1	1924	/* No free buffers. Drop the input packet and let the
ICTFBI	0:4edb816d21e1	1925	* higher layers deal with it. Continue processing
ICTFBI	0:4edb816d21e1	1926	* the received pbuf chain in case a new packet starts. */
ICTFBI	0:4edb816d21e1	1927	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
ICTFBI	0:4edb816d21e1	1928	LINK_STATS_INC(link.memerr);
ICTFBI	0:4edb816d21e1	1929	pppDrop(pcrx);
ICTFBI	0:4edb816d21e1	1930	pcrx->inState = PDSTART; /* Wait for flag sequence. */
ICTFBI	0:4edb816d21e1	1931	break;
ICTFBI	0:4edb816d21e1	1932	}
ICTFBI	0:4edb816d21e1	1933	if (pcrx->inHead == NULL) {
ICTFBI	0:4edb816d21e1	1934	struct pppInputHeader pih = (struct pppInputHeader )nextNBuf->payload;
ICTFBI	0:4edb816d21e1	1935
ICTFBI	0:4edb816d21e1	1936	pih->unit = pcrx->pd;
ICTFBI	0:4edb816d21e1	1937	pih->proto = pcrx->inProtocol;
ICTFBI	0:4edb816d21e1	1938
ICTFBI	0:4edb816d21e1	1939	nextNBuf->len += sizeof(*pih);
ICTFBI	0:4edb816d21e1	1940
ICTFBI	0:4edb816d21e1	1941	pcrx->inHead = nextNBuf;
ICTFBI	0:4edb816d21e1	1942	}
ICTFBI	0:4edb816d21e1	1943	pcrx->inTail = nextNBuf;
ICTFBI	0:4edb816d21e1	1944	}
ICTFBI	0:4edb816d21e1	1945	/* Load character into buffer. */
ICTFBI	0:4edb816d21e1	1946	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
ICTFBI	0:4edb816d21e1	1947	break;
ICTFBI	0:4edb816d21e1	1948	}
ICTFBI	0:4edb816d21e1	1949
ICTFBI	0:4edb816d21e1	1950	/* update the frame check sequence number. */
ICTFBI	0:4edb816d21e1	1951	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
ICTFBI	0:4edb816d21e1	1952	}
ICTFBI	0:4edb816d21e1	1953	} /* while (l-- > 0), all bytes processed */
ICTFBI	0:4edb816d21e1	1954
ICTFBI	0:4edb816d21e1	1955	avRandomize();
ICTFBI	0:4edb816d21e1	1956	}
ICTFBI	0:4edb816d21e1	1957	#endif /* PPPOS_SUPPORT */
ICTFBI	0:4edb816d21e1	1958
ICTFBI	0:4edb816d21e1	1959	#if PPPOE_SUPPORT
ICTFBI	0:4edb816d21e1	1960	void
ICTFBI	0:4edb816d21e1	1961	pppInProcOverEthernet(int pd, struct pbuf *pb)
ICTFBI	0:4edb816d21e1	1962	{
ICTFBI	0:4edb816d21e1	1963	struct pppInputHeader *pih;
ICTFBI	0:4edb816d21e1	1964	u16_t inProtocol;
ICTFBI	0:4edb816d21e1	1965
ICTFBI	0:4edb816d21e1	1966	if(pb->len < sizeof(inProtocol)) {
ICTFBI	0:4edb816d21e1	1967	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
ICTFBI	0:4edb816d21e1	1968	goto drop;
ICTFBI	0:4edb816d21e1	1969	}
ICTFBI	0:4edb816d21e1	1970
ICTFBI	0:4edb816d21e1	1971	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
ICTFBI	0:4edb816d21e1	1972
ICTFBI	0:4edb816d21e1	1973	/* make room for pppInputHeader - should not fail */
ICTFBI	0:4edb816d21e1	1974	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
ICTFBI	0:4edb816d21e1	1975	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
ICTFBI	0:4edb816d21e1	1976	goto drop;
ICTFBI	0:4edb816d21e1	1977	}
ICTFBI	0:4edb816d21e1	1978
ICTFBI	0:4edb816d21e1	1979	pih = pb->payload;
ICTFBI	0:4edb816d21e1	1980
ICTFBI	0:4edb816d21e1	1981	pih->unit = pd;
ICTFBI	0:4edb816d21e1	1982	pih->proto = inProtocol;
ICTFBI	0:4edb816d21e1	1983
ICTFBI	0:4edb816d21e1	1984	/* Dispatch the packet thereby consuming it. */
ICTFBI	0:4edb816d21e1	1985	pppInput(pb);
ICTFBI	0:4edb816d21e1	1986	return;
ICTFBI	0:4edb816d21e1	1987
ICTFBI	0:4edb816d21e1	1988	drop:
ICTFBI	0:4edb816d21e1	1989	LINK_STATS_INC(link.drop);
ICTFBI	0:4edb816d21e1	1990	snmp_inc_ifindiscards(&pppControl[pd].netif);
ICTFBI	0:4edb816d21e1	1991	pbuf_free(pb);
ICTFBI	0:4edb816d21e1	1992	return;
ICTFBI	0:4edb816d21e1	1993	}
ICTFBI	0:4edb816d21e1	1994	#endif /* PPPOE_SUPPORT */
ICTFBI	0:4edb816d21e1	1995
ICTFBI	0:4edb816d21e1	1996	#if LWIP_NETIF_STATUS_CALLBACK
ICTFBI	0:4edb816d21e1	1997	/** Set the status callback of a PPP's netif
ICTFBI	0:4edb816d21e1	1998	*
ICTFBI	0:4edb816d21e1	1999	* @param pd The PPP descriptor returned by pppOpen()
ICTFBI	0:4edb816d21e1	2000	* @param status_callback pointer to the status callback function
ICTFBI	0:4edb816d21e1	2001	*
ICTFBI	0:4edb816d21e1	2002	* @see netif_set_status_callback
ICTFBI	0:4edb816d21e1	2003	*/
ICTFBI	0:4edb816d21e1	2004	void
ICTFBI	0:4edb816d21e1	2005	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
ICTFBI	0:4edb816d21e1	2006	{
ICTFBI	0:4edb816d21e1	2007	netif_set_status_callback(&pppControl[pd].netif, status_callback);
ICTFBI	0:4edb816d21e1	2008	}
ICTFBI	0:4edb816d21e1	2009	#endif /* LWIP_NETIF_STATUS_CALLBACK */
ICTFBI	0:4edb816d21e1	2010
ICTFBI	0:4edb816d21e1	2011	#if LWIP_NETIF_LINK_CALLBACK
ICTFBI	0:4edb816d21e1	2012	/** Set the link callback of a PPP's netif
ICTFBI	0:4edb816d21e1	2013	*
ICTFBI	0:4edb816d21e1	2014	* @param pd The PPP descriptor returned by pppOpen()
ICTFBI	0:4edb816d21e1	2015	* @param link_callback pointer to the link callback function
ICTFBI	0:4edb816d21e1	2016	*
ICTFBI	0:4edb816d21e1	2017	* @see netif_set_link_callback
ICTFBI	0:4edb816d21e1	2018	*/
ICTFBI	0:4edb816d21e1	2019	void
ICTFBI	0:4edb816d21e1	2020	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
ICTFBI	0:4edb816d21e1	2021	{
ICTFBI	0:4edb816d21e1	2022	netif_set_link_callback(&pppControl[pd].netif, link_callback);
ICTFBI	0:4edb816d21e1	2023	}
ICTFBI	0:4edb816d21e1	2024	#endif /* LWIP_NETIF_LINK_CALLBACK */
ICTFBI	0:4edb816d21e1	2025
ICTFBI	0:4edb816d21e1	2026	#endif /* PPP_SUPPORT */

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Type:	Library
Created:	22 Nov 2015
Imports:	4
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

NetServices/lwip/netif/ppp/ppp.c@0:4edb816d21e1, 2015-10-16 (annotated)

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