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Adam Green / Mbed 2 deprecated WeatherStation

Web server based weather station using Sparkfun Weather Meters.

Dependencies: FatFileSystem mbed WeatherMeters SDFileSystem

NetStack/lwip/netif/ppp/ppp.c@0:616601bde9fb, 2012-02-23 (annotated)

Committer:: AdamGreen
Date:: Thu Feb 23 21:38:39 2012 +0000
Revision:: 0:616601bde9fb

Who changed what in which revision?

User	Revision	Line number	New contents of line
AdamGreen	0:616601bde9fb	1	/*****************************************************************************
AdamGreen	0:616601bde9fb	2	* ppp.c - Network Point to Point Protocol program file.
AdamGreen	0:616601bde9fb	3	*
AdamGreen	0:616601bde9fb	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
AdamGreen	0:616601bde9fb	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
AdamGreen	0:616601bde9fb	6	*
AdamGreen	0:616601bde9fb	7	* The authors hereby grant permission to use, copy, modify, distribute,
AdamGreen	0:616601bde9fb	8	* and license this software and its documentation for any purpose, provided
AdamGreen	0:616601bde9fb	9	* that existing copyright notices are retained in all copies and that this
AdamGreen	0:616601bde9fb	10	* notice and the following disclaimer are included verbatim in any
AdamGreen	0:616601bde9fb	11	* distributions. No written agreement, license, or royalty fee is required
AdamGreen	0:616601bde9fb	12	* for any of the authorized uses.
AdamGreen	0:616601bde9fb	13	*
AdamGreen	0:616601bde9fb	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
AdamGreen	0:616601bde9fb	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
AdamGreen	0:616601bde9fb	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
AdamGreen	0:616601bde9fb	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
AdamGreen	0:616601bde9fb	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
AdamGreen	0:616601bde9fb	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
AdamGreen	0:616601bde9fb	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
AdamGreen	0:616601bde9fb	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
AdamGreen	0:616601bde9fb	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
AdamGreen	0:616601bde9fb	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AdamGreen	0:616601bde9fb	24	*
AdamGreen	0:616601bde9fb	25	******************************************************************************
AdamGreen	0:616601bde9fb	26	* REVISION HISTORY
AdamGreen	0:616601bde9fb	27	*
AdamGreen	0:616601bde9fb	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
AdamGreen	0:616601bde9fb	29	* Ported to lwIP.
AdamGreen	0:616601bde9fb	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
AdamGreen	0:616601bde9fb	31	* Original.
AdamGreen	0:616601bde9fb	32	*****************************************************************************/
AdamGreen	0:616601bde9fb	33
AdamGreen	0:616601bde9fb	34	/*
AdamGreen	0:616601bde9fb	35	* ppp_defs.h - PPP definitions.
AdamGreen	0:616601bde9fb	36	*
AdamGreen	0:616601bde9fb	37	* if_pppvar.h - private structures and declarations for PPP.
AdamGreen	0:616601bde9fb	38	*
AdamGreen	0:616601bde9fb	39	* Copyright (c) 1994 The Australian National University.
AdamGreen	0:616601bde9fb	40	* All rights reserved.
AdamGreen	0:616601bde9fb	41	*
AdamGreen	0:616601bde9fb	42	* Permission to use, copy, modify, and distribute this software and its
AdamGreen	0:616601bde9fb	43	* documentation is hereby granted, provided that the above copyright
AdamGreen	0:616601bde9fb	44	* notice appears in all copies. This software is provided without any
AdamGreen	0:616601bde9fb	45	* warranty, express or implied. The Australian National University
AdamGreen	0:616601bde9fb	46	* makes no representations about the suitability of this software for
AdamGreen	0:616601bde9fb	47	* any purpose.
AdamGreen	0:616601bde9fb	48	*
AdamGreen	0:616601bde9fb	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
AdamGreen	0:616601bde9fb	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
AdamGreen	0:616601bde9fb	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
AdamGreen	0:616601bde9fb	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
AdamGreen	0:616601bde9fb	53	* OF SUCH DAMAGE.
AdamGreen	0:616601bde9fb	54	*
AdamGreen	0:616601bde9fb	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
AdamGreen	0:616601bde9fb	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AdamGreen	0:616601bde9fb	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
AdamGreen	0:616601bde9fb	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
AdamGreen	0:616601bde9fb	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
AdamGreen	0:616601bde9fb	60	* OR MODIFICATIONS.
AdamGreen	0:616601bde9fb	61	*/
AdamGreen	0:616601bde9fb	62
AdamGreen	0:616601bde9fb	63	/*
AdamGreen	0:616601bde9fb	64	* if_ppp.h - Point-to-Point Protocol definitions.
AdamGreen	0:616601bde9fb	65	*
AdamGreen	0:616601bde9fb	66	* Copyright (c) 1989 Carnegie Mellon University.
AdamGreen	0:616601bde9fb	67	* All rights reserved.
AdamGreen	0:616601bde9fb	68	*
AdamGreen	0:616601bde9fb	69	* Redistribution and use in source and binary forms are permitted
AdamGreen	0:616601bde9fb	70	* provided that the above copyright notice and this paragraph are
AdamGreen	0:616601bde9fb	71	* duplicated in all such forms and that any documentation,
AdamGreen	0:616601bde9fb	72	* advertising materials, and other materials related to such
AdamGreen	0:616601bde9fb	73	* distribution and use acknowledge that the software was developed
AdamGreen	0:616601bde9fb	74	* by Carnegie Mellon University. The name of the
AdamGreen	0:616601bde9fb	75	* University may not be used to endorse or promote products derived
AdamGreen	0:616601bde9fb	76	* from this software without specific prior written permission.
AdamGreen	0:616601bde9fb	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
AdamGreen	0:616601bde9fb	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
AdamGreen	0:616601bde9fb	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
AdamGreen	0:616601bde9fb	80	*/
AdamGreen	0:616601bde9fb	81
AdamGreen	0:616601bde9fb	82	#include "lwip/opt.h"
AdamGreen	0:616601bde9fb	83
AdamGreen	0:616601bde9fb	84	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
AdamGreen	0:616601bde9fb	85
AdamGreen	0:616601bde9fb	86	#include "lwip/ip.h" /* for ip_input() */
AdamGreen	0:616601bde9fb	87
AdamGreen	0:616601bde9fb	88	#include "ppp.h"
AdamGreen	0:616601bde9fb	89	#include "pppdebug.h"
AdamGreen	0:616601bde9fb	90
AdamGreen	0:616601bde9fb	91	#include "randm.h"
AdamGreen	0:616601bde9fb	92	#include "fsm.h"
AdamGreen	0:616601bde9fb	93	#if PAP_SUPPORT
AdamGreen	0:616601bde9fb	94	#include "pap.h"
AdamGreen	0:616601bde9fb	95	#endif /* PAP_SUPPORT */
AdamGreen	0:616601bde9fb	96	#if CHAP_SUPPORT
AdamGreen	0:616601bde9fb	97	#include "chap.h"
AdamGreen	0:616601bde9fb	98	#endif /* CHAP_SUPPORT */
AdamGreen	0:616601bde9fb	99	#include "ipcp.h"
AdamGreen	0:616601bde9fb	100	#include "lcp.h"
AdamGreen	0:616601bde9fb	101	#include "magic.h"
AdamGreen	0:616601bde9fb	102	#include "auth.h"
AdamGreen	0:616601bde9fb	103	#if VJ_SUPPORT
AdamGreen	0:616601bde9fb	104	#include "vj.h"
AdamGreen	0:616601bde9fb	105	#endif /* VJ_SUPPORT */
AdamGreen	0:616601bde9fb	106	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	107	#include "netif/ppp_oe.h"
AdamGreen	0:616601bde9fb	108	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	109
AdamGreen	0:616601bde9fb	110	#include "lwip/tcpip.h"
AdamGreen	0:616601bde9fb	111	#include "lwip/api.h"
AdamGreen	0:616601bde9fb	112	#include "lwip/snmp.h"
AdamGreen	0:616601bde9fb	113
AdamGreen	0:616601bde9fb	114	#include <string.h>
AdamGreen	0:616601bde9fb	115
AdamGreen	0:616601bde9fb	116	/*************************/
AdamGreen	0:616601bde9fb	117	/* LOCAL DEFINITIONS */
AdamGreen	0:616601bde9fb	118	/*************************/
AdamGreen	0:616601bde9fb	119
AdamGreen	0:616601bde9fb	120	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
AdamGreen	0:616601bde9fb	121	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
AdamGreen	0:616601bde9fb	122	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
AdamGreen	0:616601bde9fb	123	*/
AdamGreen	0:616601bde9fb	124	#ifndef PPP_INPROC_MULTITHREADED
AdamGreen	0:616601bde9fb	125	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
AdamGreen	0:616601bde9fb	126	#endif
AdamGreen	0:616601bde9fb	127
AdamGreen	0:616601bde9fb	128	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
AdamGreen	0:616601bde9fb	129	* Default is 0: call pppos_input() for received raw characters, charcater
AdamGreen	0:616601bde9fb	130	* reception is up to the port */
AdamGreen	0:616601bde9fb	131	#ifndef PPP_INPROC_OWNTHREAD
AdamGreen	0:616601bde9fb	132	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
AdamGreen	0:616601bde9fb	133	#endif
AdamGreen	0:616601bde9fb	134
AdamGreen	0:616601bde9fb	135	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
AdamGreen	0:616601bde9fb	136	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
AdamGreen	0:616601bde9fb	137	#endif
AdamGreen	0:616601bde9fb	138
AdamGreen	0:616601bde9fb	139	/*
AdamGreen	0:616601bde9fb	140	* The basic PPP frame.
AdamGreen	0:616601bde9fb	141	*/
AdamGreen	0:616601bde9fb	142	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
AdamGreen	0:616601bde9fb	143	#define PPP_CONTROL(p) (((u_char *)(p))[1])
AdamGreen	0:616601bde9fb	144	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
AdamGreen	0:616601bde9fb	145
AdamGreen	0:616601bde9fb	146	/* PPP packet parser states. Current state indicates operation yet to be
AdamGreen	0:616601bde9fb	147	* completed. */
AdamGreen	0:616601bde9fb	148	typedef enum {
AdamGreen	0:616601bde9fb	149	PDIDLE = 0, /* Idle state - waiting. */
AdamGreen	0:616601bde9fb	150	PDSTART, /* Process start flag. */
AdamGreen	0:616601bde9fb	151	PDADDRESS, /* Process address field. */
AdamGreen	0:616601bde9fb	152	PDCONTROL, /* Process control field. */
AdamGreen	0:616601bde9fb	153	PDPROTOCOL1, /* Process protocol field 1. */
AdamGreen	0:616601bde9fb	154	PDPROTOCOL2, /* Process protocol field 2. */
AdamGreen	0:616601bde9fb	155	PDDATA /* Process data byte. */
AdamGreen	0:616601bde9fb	156	} PPPDevStates;
AdamGreen	0:616601bde9fb	157
AdamGreen	0:616601bde9fb	158	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
AdamGreen	0:616601bde9fb	159
AdamGreen	0:616601bde9fb	160	/************************/
AdamGreen	0:616601bde9fb	161	/* LOCAL DATA TYPES */
AdamGreen	0:616601bde9fb	162	/************************/
AdamGreen	0:616601bde9fb	163
AdamGreen	0:616601bde9fb	164	/** RX buffer size: this may be configured smaller! */
AdamGreen	0:616601bde9fb	165	#ifndef PPPOS_RX_BUFSIZE
AdamGreen	0:616601bde9fb	166	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
AdamGreen	0:616601bde9fb	167	#endif
AdamGreen	0:616601bde9fb	168
AdamGreen	0:616601bde9fb	169	typedef struct PPPControlRx_s {
AdamGreen	0:616601bde9fb	170	/** unit number / ppp descriptor */
AdamGreen	0:616601bde9fb	171	int pd;
AdamGreen	0:616601bde9fb	172	/** the rx file descriptor */
AdamGreen	0:616601bde9fb	173	sio_fd_t fd;
AdamGreen	0:616601bde9fb	174	/** receive buffer - encoded data is stored here */
AdamGreen	0:616601bde9fb	175	u_char rxbuf[PPPOS_RX_BUFSIZE];
AdamGreen	0:616601bde9fb	176
AdamGreen	0:616601bde9fb	177	/* The input packet. */
AdamGreen	0:616601bde9fb	178	struct pbuf inHead, inTail;
AdamGreen	0:616601bde9fb	179
AdamGreen	0:616601bde9fb	180	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	181	u16_t inProtocol; /* The input protocol code. */
AdamGreen	0:616601bde9fb	182	u16_t inFCS; /* Input Frame Check Sequence value. */
AdamGreen	0:616601bde9fb	183	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	184	PPPDevStates inState; /* The input process state. */
AdamGreen	0:616601bde9fb	185	char inEscaped; /* Escape next character. */
AdamGreen	0:616601bde9fb	186	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
AdamGreen	0:616601bde9fb	187	} PPPControlRx;
AdamGreen	0:616601bde9fb	188
AdamGreen	0:616601bde9fb	189	/*
AdamGreen	0:616601bde9fb	190	* PPP interface control block.
AdamGreen	0:616601bde9fb	191	*/
AdamGreen	0:616601bde9fb	192	typedef struct PPPControl_s {
AdamGreen	0:616601bde9fb	193	PPPControlRx rx;
AdamGreen	0:616601bde9fb	194	char openFlag; /* True when in use. */
AdamGreen	0:616601bde9fb	195	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	196	struct netif *ethif;
AdamGreen	0:616601bde9fb	197	struct pppoe_softc *pppoe_sc;
AdamGreen	0:616601bde9fb	198	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	199	int if_up; /* True when the interface is up. */
AdamGreen	0:616601bde9fb	200	int errCode; /* Code indicating why interface is down. */
AdamGreen	0:616601bde9fb	201	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	202	sio_fd_t fd; /* File device ID of port. */
AdamGreen	0:616601bde9fb	203	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	204	u16_t mtu; /* Peer's mru */
AdamGreen	0:616601bde9fb	205	int pcomp; /* Does peer accept protocol compression? */
AdamGreen	0:616601bde9fb	206	int accomp; /* Does peer accept addr/ctl compression? */
AdamGreen	0:616601bde9fb	207	u_long lastXMit; /* Time of last transmission. */
AdamGreen	0:616601bde9fb	208	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
AdamGreen	0:616601bde9fb	209	#if PPPOS_SUPPORT && VJ_SUPPORT
AdamGreen	0:616601bde9fb	210	int vjEnabled; /* Flag indicating VJ compression enabled. */
AdamGreen	0:616601bde9fb	211	struct vjcompress vjComp; /* Van Jacobson compression header. */
AdamGreen	0:616601bde9fb	212	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen	0:616601bde9fb	213
AdamGreen	0:616601bde9fb	214	struct netif netif;
AdamGreen	0:616601bde9fb	215
AdamGreen	0:616601bde9fb	216	struct ppp_addrs addrs;
AdamGreen	0:616601bde9fb	217
AdamGreen	0:616601bde9fb	218	void (linkStatusCB)(void ctx, int errCode, void *arg);
AdamGreen	0:616601bde9fb	219	void *linkStatusCtx;
AdamGreen	0:616601bde9fb	220
AdamGreen	0:616601bde9fb	221	} PPPControl;
AdamGreen	0:616601bde9fb	222
AdamGreen	0:616601bde9fb	223
AdamGreen	0:616601bde9fb	224	/*
AdamGreen	0:616601bde9fb	225	* Ioctl definitions.
AdamGreen	0:616601bde9fb	226	*/
AdamGreen	0:616601bde9fb	227
AdamGreen	0:616601bde9fb	228	struct npioctl {
AdamGreen	0:616601bde9fb	229	int protocol; /* PPP procotol, e.g. PPP_IP */
AdamGreen	0:616601bde9fb	230	enum NPmode mode;
AdamGreen	0:616601bde9fb	231	};
AdamGreen	0:616601bde9fb	232
AdamGreen	0:616601bde9fb	233
AdamGreen	0:616601bde9fb	234
AdamGreen	0:616601bde9fb	235	/***********************************/
AdamGreen	0:616601bde9fb	236	/* LOCAL FUNCTION DECLARATIONS */
AdamGreen	0:616601bde9fb	237	/***********************************/
AdamGreen	0:616601bde9fb	238	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	239	#if PPP_INPROC_OWNTHREAD
AdamGreen	0:616601bde9fb	240	static void pppInputThread(void *arg);
AdamGreen	0:616601bde9fb	241	#endif /* PPP_INPROC_OWNTHREAD */
AdamGreen	0:616601bde9fb	242	static void pppDrop(PPPControlRx *pcrx);
AdamGreen	0:616601bde9fb	243	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
AdamGreen	0:616601bde9fb	244	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	245
AdamGreen	0:616601bde9fb	246
AdamGreen	0:616601bde9fb	247	/******************************/
AdamGreen	0:616601bde9fb	248	/* PUBLIC DATA STRUCTURES */
AdamGreen	0:616601bde9fb	249	/******************************/
AdamGreen	0:616601bde9fb	250	u_long subnetMask;
AdamGreen	0:616601bde9fb	251
AdamGreen	0:616601bde9fb	252	static PPPControl pppControl[NUM_PPP] MEM_POSITION; /* The PPP interface control blocks. */
AdamGreen	0:616601bde9fb	253
AdamGreen	0:616601bde9fb	254	/*
AdamGreen	0:616601bde9fb	255	* PPP Data Link Layer "protocol" table.
AdamGreen	0:616601bde9fb	256	* One entry per supported protocol.
AdamGreen	0:616601bde9fb	257	* The last entry must be NULL.
AdamGreen	0:616601bde9fb	258	*/
AdamGreen	0:616601bde9fb	259	struct protent *ppp_protocols[] = {
AdamGreen	0:616601bde9fb	260	&lcp_protent,
AdamGreen	0:616601bde9fb	261	#if PAP_SUPPORT
AdamGreen	0:616601bde9fb	262	&pap_protent,
AdamGreen	0:616601bde9fb	263	#endif /* PAP_SUPPORT */
AdamGreen	0:616601bde9fb	264	#if CHAP_SUPPORT
AdamGreen	0:616601bde9fb	265	&chap_protent,
AdamGreen	0:616601bde9fb	266	#endif /* CHAP_SUPPORT */
AdamGreen	0:616601bde9fb	267	#if CBCP_SUPPORT
AdamGreen	0:616601bde9fb	268	&cbcp_protent,
AdamGreen	0:616601bde9fb	269	#endif /* CBCP_SUPPORT */
AdamGreen	0:616601bde9fb	270	&ipcp_protent,
AdamGreen	0:616601bde9fb	271	#if CCP_SUPPORT
AdamGreen	0:616601bde9fb	272	&ccp_protent,
AdamGreen	0:616601bde9fb	273	#endif /* CCP_SUPPORT */
AdamGreen	0:616601bde9fb	274	NULL
AdamGreen	0:616601bde9fb	275	};
AdamGreen	0:616601bde9fb	276
AdamGreen	0:616601bde9fb	277
AdamGreen	0:616601bde9fb	278	/*
AdamGreen	0:616601bde9fb	279	* Buffers for outgoing packets. This must be accessed only from the appropriate
AdamGreen	0:616601bde9fb	280	* PPP task so that it doesn't need to be protected to avoid collisions.
AdamGreen	0:616601bde9fb	281	*/
AdamGreen	0:616601bde9fb	282	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] MEM_POSITION;
AdamGreen	0:616601bde9fb	283
AdamGreen	0:616601bde9fb	284
AdamGreen	0:616601bde9fb	285	/*****************************/
AdamGreen	0:616601bde9fb	286	/* LOCAL DATA STRUCTURES */
AdamGreen	0:616601bde9fb	287	/*****************************/
AdamGreen	0:616601bde9fb	288
AdamGreen	0:616601bde9fb	289	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	290	/*
AdamGreen	0:616601bde9fb	291	* FCS lookup table as calculated by genfcstab.
AdamGreen	0:616601bde9fb	292	* @todo: smaller, slower implementation for lower memory footprint?
AdamGreen	0:616601bde9fb	293	*/
AdamGreen	0:616601bde9fb	294	static const u_short fcstab[256] = {
AdamGreen	0:616601bde9fb	295	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
AdamGreen	0:616601bde9fb	296	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
AdamGreen	0:616601bde9fb	297	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
AdamGreen	0:616601bde9fb	298	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
AdamGreen	0:616601bde9fb	299	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
AdamGreen	0:616601bde9fb	300	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
AdamGreen	0:616601bde9fb	301	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
AdamGreen	0:616601bde9fb	302	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
AdamGreen	0:616601bde9fb	303	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
AdamGreen	0:616601bde9fb	304	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
AdamGreen	0:616601bde9fb	305	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
AdamGreen	0:616601bde9fb	306	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
AdamGreen	0:616601bde9fb	307	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
AdamGreen	0:616601bde9fb	308	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
AdamGreen	0:616601bde9fb	309	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
AdamGreen	0:616601bde9fb	310	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
AdamGreen	0:616601bde9fb	311	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
AdamGreen	0:616601bde9fb	312	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
AdamGreen	0:616601bde9fb	313	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
AdamGreen	0:616601bde9fb	314	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
AdamGreen	0:616601bde9fb	315	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
AdamGreen	0:616601bde9fb	316	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
AdamGreen	0:616601bde9fb	317	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
AdamGreen	0:616601bde9fb	318	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
AdamGreen	0:616601bde9fb	319	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
AdamGreen	0:616601bde9fb	320	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
AdamGreen	0:616601bde9fb	321	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
AdamGreen	0:616601bde9fb	322	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
AdamGreen	0:616601bde9fb	323	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
AdamGreen	0:616601bde9fb	324	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
AdamGreen	0:616601bde9fb	325	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
AdamGreen	0:616601bde9fb	326	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
AdamGreen	0:616601bde9fb	327	};
AdamGreen	0:616601bde9fb	328
AdamGreen	0:616601bde9fb	329	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
AdamGreen	0:616601bde9fb	330	* to select the specific bit for a character. */
AdamGreen	0:616601bde9fb	331	static u_char pppACCMMask[] = {
AdamGreen	0:616601bde9fb	332	0x01,
AdamGreen	0:616601bde9fb	333	0x02,
AdamGreen	0:616601bde9fb	334	0x04,
AdamGreen	0:616601bde9fb	335	0x08,
AdamGreen	0:616601bde9fb	336	0x10,
AdamGreen	0:616601bde9fb	337	0x20,
AdamGreen	0:616601bde9fb	338	0x40,
AdamGreen	0:616601bde9fb	339	0x80
AdamGreen	0:616601bde9fb	340	};
AdamGreen	0:616601bde9fb	341
AdamGreen	0:616601bde9fb	342	/** Wake up the task blocked in reading from serial line (if any) */
AdamGreen	0:616601bde9fb	343	static void
AdamGreen	0:616601bde9fb	344	pppRecvWakeup(int pd)
AdamGreen	0:616601bde9fb	345	{
AdamGreen	0:616601bde9fb	346	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
AdamGreen	0:616601bde9fb	347	sio_read_abort(pppControl[pd].fd);
AdamGreen	0:616601bde9fb	348	}
AdamGreen	0:616601bde9fb	349	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	350
AdamGreen	0:616601bde9fb	351	void
AdamGreen	0:616601bde9fb	352	pppLinkTerminated(int pd)
AdamGreen	0:616601bde9fb	353	{
AdamGreen	0:616601bde9fb	354	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
AdamGreen	0:616601bde9fb	355
AdamGreen	0:616601bde9fb	356	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	357	if (pppControl[pd].ethif) {
AdamGreen	0:616601bde9fb	358	pppoe_disconnect(pppControl[pd].pppoe_sc);
AdamGreen	0:616601bde9fb	359	} else
AdamGreen	0:616601bde9fb	360	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	361	{
AdamGreen	0:616601bde9fb	362	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	363	PPPControl* pc;
AdamGreen	0:616601bde9fb	364	pppRecvWakeup(pd);
AdamGreen	0:616601bde9fb	365	pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	366	pppDrop(&pc->rx); /* bug fix #17726 */
AdamGreen	0:616601bde9fb	367
AdamGreen	0:616601bde9fb	368	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
AdamGreen	0:616601bde9fb	369	if (pc->linkStatusCB) {
AdamGreen	0:616601bde9fb	370	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
AdamGreen	0:616601bde9fb	371	}
AdamGreen	0:616601bde9fb	372
AdamGreen	0:616601bde9fb	373	pc->openFlag = 0;/**/
AdamGreen	0:616601bde9fb	374	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	375	}
AdamGreen	0:616601bde9fb	376	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
AdamGreen	0:616601bde9fb	377	}
AdamGreen	0:616601bde9fb	378
AdamGreen	0:616601bde9fb	379	void
AdamGreen	0:616601bde9fb	380	pppLinkDown(int pd)
AdamGreen	0:616601bde9fb	381	{
AdamGreen	0:616601bde9fb	382	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
AdamGreen	0:616601bde9fb	383
AdamGreen	0:616601bde9fb	384	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	385	if (pppControl[pd].ethif) {
AdamGreen	0:616601bde9fb	386	pppoe_disconnect(pppControl[pd].pppoe_sc);
AdamGreen	0:616601bde9fb	387	} else
AdamGreen	0:616601bde9fb	388	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	389	{
AdamGreen	0:616601bde9fb	390	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	391	pppRecvWakeup(pd);
AdamGreen	0:616601bde9fb	392	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	393	}
AdamGreen	0:616601bde9fb	394	}
AdamGreen	0:616601bde9fb	395
AdamGreen	0:616601bde9fb	396	/** Initiate LCP open request */
AdamGreen	0:616601bde9fb	397	static void
AdamGreen	0:616601bde9fb	398	pppStart(int pd)
AdamGreen	0:616601bde9fb	399	{
AdamGreen	0:616601bde9fb	400	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
AdamGreen	0:616601bde9fb	401	lcp_lowerup(pd);
AdamGreen	0:616601bde9fb	402	lcp_open(pd); /* Start protocol */
AdamGreen	0:616601bde9fb	403	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
AdamGreen	0:616601bde9fb	404	}
AdamGreen	0:616601bde9fb	405
AdamGreen	0:616601bde9fb	406	/** LCP close request */
AdamGreen	0:616601bde9fb	407	static void
AdamGreen	0:616601bde9fb	408	pppStop(int pd)
AdamGreen	0:616601bde9fb	409	{
AdamGreen	0:616601bde9fb	410	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
AdamGreen	0:616601bde9fb	411	lcp_close(pd, "User request");
AdamGreen	0:616601bde9fb	412	}
AdamGreen	0:616601bde9fb	413
AdamGreen	0:616601bde9fb	414	/** Called when carrier/link is lost */
AdamGreen	0:616601bde9fb	415	static void
AdamGreen	0:616601bde9fb	416	pppHup(int pd)
AdamGreen	0:616601bde9fb	417	{
AdamGreen	0:616601bde9fb	418	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
AdamGreen	0:616601bde9fb	419	lcp_lowerdown(pd);
AdamGreen	0:616601bde9fb	420	link_terminated(pd);
AdamGreen	0:616601bde9fb	421	}
AdamGreen	0:616601bde9fb	422
AdamGreen	0:616601bde9fb	423	/***********************************/
AdamGreen	0:616601bde9fb	424	/* PUBLIC FUNCTION DEFINITIONS */
AdamGreen	0:616601bde9fb	425	/***********************************/
AdamGreen	0:616601bde9fb	426	/* Initialize the PPP subsystem. */
AdamGreen	0:616601bde9fb	427
AdamGreen	0:616601bde9fb	428	struct ppp_settings ppp_settings;
AdamGreen	0:616601bde9fb	429
AdamGreen	0:616601bde9fb	430	void
AdamGreen	0:616601bde9fb	431	pppInit(void)
AdamGreen	0:616601bde9fb	432	{
AdamGreen	0:616601bde9fb	433	struct protent *protp;
AdamGreen	0:616601bde9fb	434	int i, j;
AdamGreen	0:616601bde9fb	435
AdamGreen	0:616601bde9fb	436	memset(&ppp_settings, 0, sizeof(ppp_settings));
AdamGreen	0:616601bde9fb	437	ppp_settings.usepeerdns = 1;
AdamGreen	0:616601bde9fb	438	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
AdamGreen	0:616601bde9fb	439
AdamGreen	0:616601bde9fb	440	magicInit();
AdamGreen	0:616601bde9fb	441
AdamGreen	0:616601bde9fb	442	subnetMask = PP_HTONL(0xffffff00);
AdamGreen	0:616601bde9fb	443
AdamGreen	0:616601bde9fb	444	for (i = 0; i < NUM_PPP; i++) {
AdamGreen	0:616601bde9fb	445	/* Initialize each protocol to the standard option set. */
AdamGreen	0:616601bde9fb	446	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
AdamGreen	0:616601bde9fb	447	(*protp->init)(i);
AdamGreen	0:616601bde9fb	448	}
AdamGreen	0:616601bde9fb	449	}
AdamGreen	0:616601bde9fb	450	}
AdamGreen	0:616601bde9fb	451
AdamGreen	0:616601bde9fb	452	void
AdamGreen	0:616601bde9fb	453	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
AdamGreen	0:616601bde9fb	454	{
AdamGreen	0:616601bde9fb	455	switch(authType) {
AdamGreen	0:616601bde9fb	456	case PPPAUTHTYPE_NONE:
AdamGreen	0:616601bde9fb	457	default:
AdamGreen	0:616601bde9fb	458	#ifdef LWIP_PPP_STRICT_PAP_REJECT
AdamGreen	0:616601bde9fb	459	ppp_settings.refuse_pap = 1;
AdamGreen	0:616601bde9fb	460	#else /* LWIP_PPP_STRICT_PAP_REJECT */
AdamGreen	0:616601bde9fb	461	/* some providers request pap and accept an empty login/pw */
AdamGreen	0:616601bde9fb	462	ppp_settings.refuse_pap = 0;
AdamGreen	0:616601bde9fb	463	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
AdamGreen	0:616601bde9fb	464	ppp_settings.refuse_chap = 1;
AdamGreen	0:616601bde9fb	465	break;
AdamGreen	0:616601bde9fb	466
AdamGreen	0:616601bde9fb	467	case PPPAUTHTYPE_ANY:
AdamGreen	0:616601bde9fb	468	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
AdamGreen	0:616601bde9fb	469	* RFC 1994 says:
AdamGreen	0:616601bde9fb	470	*
AdamGreen	0:616601bde9fb	471	* In practice, within or associated with each PPP server, there is a
AdamGreen	0:616601bde9fb	472	* database which associates "user" names with authentication
AdamGreen	0:616601bde9fb	473	* information ("secrets"). It is not anticipated that a particular
AdamGreen	0:616601bde9fb	474	* named user would be authenticated by multiple methods. This would
AdamGreen	0:616601bde9fb	475	* make the user vulnerable to attacks which negotiate the least secure
AdamGreen	0:616601bde9fb	476	* method from among a set (such as PAP rather than CHAP). If the same
AdamGreen	0:616601bde9fb	477	* secret was used, PAP would reveal the secret to be used later with
AdamGreen	0:616601bde9fb	478	* CHAP.
AdamGreen	0:616601bde9fb	479	*
AdamGreen	0:616601bde9fb	480	* Instead, for each user name there should be an indication of exactly
AdamGreen	0:616601bde9fb	481	* one method used to authenticate that user name. If a user needs to
AdamGreen	0:616601bde9fb	482	* make use of different authentication methods under different
AdamGreen	0:616601bde9fb	483	* circumstances, then distinct user names SHOULD be employed, each of
AdamGreen	0:616601bde9fb	484	* which identifies exactly one authentication method.
AdamGreen	0:616601bde9fb	485	*
AdamGreen	0:616601bde9fb	486	*/
AdamGreen	0:616601bde9fb	487	ppp_settings.refuse_pap = 0;
AdamGreen	0:616601bde9fb	488	ppp_settings.refuse_chap = 0;
AdamGreen	0:616601bde9fb	489	break;
AdamGreen	0:616601bde9fb	490
AdamGreen	0:616601bde9fb	491	case PPPAUTHTYPE_PAP:
AdamGreen	0:616601bde9fb	492	ppp_settings.refuse_pap = 0;
AdamGreen	0:616601bde9fb	493	ppp_settings.refuse_chap = 1;
AdamGreen	0:616601bde9fb	494	break;
AdamGreen	0:616601bde9fb	495
AdamGreen	0:616601bde9fb	496	case PPPAUTHTYPE_CHAP:
AdamGreen	0:616601bde9fb	497	ppp_settings.refuse_pap = 1;
AdamGreen	0:616601bde9fb	498	ppp_settings.refuse_chap = 0;
AdamGreen	0:616601bde9fb	499	break;
AdamGreen	0:616601bde9fb	500	}
AdamGreen	0:616601bde9fb	501
AdamGreen	0:616601bde9fb	502	if(user) {
AdamGreen	0:616601bde9fb	503	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
AdamGreen	0:616601bde9fb	504	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
AdamGreen	0:616601bde9fb	505	} else {
AdamGreen	0:616601bde9fb	506	ppp_settings.user[0] = '\0';
AdamGreen	0:616601bde9fb	507	}
AdamGreen	0:616601bde9fb	508
AdamGreen	0:616601bde9fb	509	if(passwd) {
AdamGreen	0:616601bde9fb	510	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
AdamGreen	0:616601bde9fb	511	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
AdamGreen	0:616601bde9fb	512	} else {
AdamGreen	0:616601bde9fb	513	ppp_settings.passwd[0] = '\0';
AdamGreen	0:616601bde9fb	514	}
AdamGreen	0:616601bde9fb	515	}
AdamGreen	0:616601bde9fb	516
AdamGreen	0:616601bde9fb	517	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	518	/** Open a new PPP connection using the given I/O device.
AdamGreen	0:616601bde9fb	519	* This initializes the PPP control block but does not
AdamGreen	0:616601bde9fb	520	* attempt to negotiate the LCP session. If this port
AdamGreen	0:616601bde9fb	521	* connects to a modem, the modem connection must be
AdamGreen	0:616601bde9fb	522	* established before calling this.
AdamGreen	0:616601bde9fb	523	* Return a new PPP connection descriptor on success or
AdamGreen	0:616601bde9fb	524	* an error code (negative) on failure.
AdamGreen	0:616601bde9fb	525	*
AdamGreen	0:616601bde9fb	526	* pppOpen() is directly defined to this function.
AdamGreen	0:616601bde9fb	527	*/
AdamGreen	0:616601bde9fb	528	int
AdamGreen	0:616601bde9fb	529	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
AdamGreen	0:616601bde9fb	530	{
AdamGreen	0:616601bde9fb	531	PPPControl *pc;
AdamGreen	0:616601bde9fb	532	int pd;
AdamGreen	0:616601bde9fb	533
AdamGreen	0:616601bde9fb	534	if (linkStatusCB == NULL) {
AdamGreen	0:616601bde9fb	535	/* PPP is single-threaded: without a callback,
AdamGreen	0:616601bde9fb	536	* there is no way to know when the link is up. */
AdamGreen	0:616601bde9fb	537	return PPPERR_PARAM;
AdamGreen	0:616601bde9fb	538	}
AdamGreen	0:616601bde9fb	539
AdamGreen	0:616601bde9fb	540	/* Find a free PPP session descriptor. */
AdamGreen	0:616601bde9fb	541	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
AdamGreen	0:616601bde9fb	542
AdamGreen	0:616601bde9fb	543	if (pd >= NUM_PPP) {
AdamGreen	0:616601bde9fb	544	pd = PPPERR_OPEN;
AdamGreen	0:616601bde9fb	545	} else {
AdamGreen	0:616601bde9fb	546	pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	547	/* @todo: is this correct or do I overwrite something? */
AdamGreen	0:616601bde9fb	548	memset(pc, 0, sizeof(PPPControl));
AdamGreen	0:616601bde9fb	549	pc->rx.pd = pd;
AdamGreen	0:616601bde9fb	550	pc->rx.fd = fd;
AdamGreen	0:616601bde9fb	551
AdamGreen	0:616601bde9fb	552	pc->openFlag = 1;
AdamGreen	0:616601bde9fb	553	pc->fd = fd;
AdamGreen	0:616601bde9fb	554
AdamGreen	0:616601bde9fb	555	#if VJ_SUPPORT
AdamGreen	0:616601bde9fb	556	vj_compress_init(&pc->vjComp);
AdamGreen	0:616601bde9fb	557	#endif /* VJ_SUPPORT */
AdamGreen	0:616601bde9fb	558
AdamGreen	0:616601bde9fb	559	/*
AdamGreen	0:616601bde9fb	560	* Default the in and out accm so that escape and flag characters
AdamGreen	0:616601bde9fb	561	* are always escaped.
AdamGreen	0:616601bde9fb	562	*/
AdamGreen	0:616601bde9fb	563	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
AdamGreen	0:616601bde9fb	564	pc->outACCM[15] = 0x60;
AdamGreen	0:616601bde9fb	565
AdamGreen	0:616601bde9fb	566	pc->linkStatusCB = linkStatusCB;
AdamGreen	0:616601bde9fb	567	pc->linkStatusCtx = linkStatusCtx;
AdamGreen	0:616601bde9fb	568
AdamGreen	0:616601bde9fb	569	/*
AdamGreen	0:616601bde9fb	570	* Start the connection and handle incoming events (packet or timeout).
AdamGreen	0:616601bde9fb	571	*/
AdamGreen	0:616601bde9fb	572	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
AdamGreen	0:616601bde9fb	573	pppStart(pd);
AdamGreen	0:616601bde9fb	574	#if PPP_INPROC_OWNTHREAD
AdamGreen	0:616601bde9fb	575	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
AdamGreen	0:616601bde9fb	576	#endif
AdamGreen	0:616601bde9fb	577	}
AdamGreen	0:616601bde9fb	578
AdamGreen	0:616601bde9fb	579	return pd;
AdamGreen	0:616601bde9fb	580	}
AdamGreen	0:616601bde9fb	581	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	582
AdamGreen	0:616601bde9fb	583	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	584	static void pppOverEthernetLinkStatusCB(int pd, int up);
AdamGreen	0:616601bde9fb	585
AdamGreen	0:616601bde9fb	586	void
AdamGreen	0:616601bde9fb	587	pppOverEthernetClose(int pd)
AdamGreen	0:616601bde9fb	588	{
AdamGreen	0:616601bde9fb	589	PPPControl* pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	590
AdamGreen	0:616601bde9fb	591	/* TJL There's no lcp_deinit */
AdamGreen	0:616601bde9fb	592	lcp_close(pd, NULL);
AdamGreen	0:616601bde9fb	593
AdamGreen	0:616601bde9fb	594	pppoe_destroy(&pc->netif);
AdamGreen	0:616601bde9fb	595	}
AdamGreen	0:616601bde9fb	596
AdamGreen	0:616601bde9fb	597	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
AdamGreen	0:616601bde9fb	598	{
AdamGreen	0:616601bde9fb	599	PPPControl *pc;
AdamGreen	0:616601bde9fb	600	int pd;
AdamGreen	0:616601bde9fb	601
AdamGreen	0:616601bde9fb	602	LWIP_UNUSED_ARG(service_name);
AdamGreen	0:616601bde9fb	603	LWIP_UNUSED_ARG(concentrator_name);
AdamGreen	0:616601bde9fb	604
AdamGreen	0:616601bde9fb	605	if (linkStatusCB == NULL) {
AdamGreen	0:616601bde9fb	606	/* PPP is single-threaded: without a callback,
AdamGreen	0:616601bde9fb	607	* there is no way to know when the link is up. */
AdamGreen	0:616601bde9fb	608	return PPPERR_PARAM;
AdamGreen	0:616601bde9fb	609	}
AdamGreen	0:616601bde9fb	610
AdamGreen	0:616601bde9fb	611	/* Find a free PPP session descriptor. Critical region? */
AdamGreen	0:616601bde9fb	612	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
AdamGreen	0:616601bde9fb	613	if (pd >= NUM_PPP) {
AdamGreen	0:616601bde9fb	614	pd = PPPERR_OPEN;
AdamGreen	0:616601bde9fb	615	} else {
AdamGreen	0:616601bde9fb	616	pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	617	memset(pc, 0, sizeof(PPPControl));
AdamGreen	0:616601bde9fb	618	pc->openFlag = 1;
AdamGreen	0:616601bde9fb	619	pc->ethif = ethif;
AdamGreen	0:616601bde9fb	620
AdamGreen	0:616601bde9fb	621	pc->linkStatusCB = linkStatusCB;
AdamGreen	0:616601bde9fb	622	pc->linkStatusCtx = linkStatusCtx;
AdamGreen	0:616601bde9fb	623
AdamGreen	0:616601bde9fb	624	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
AdamGreen	0:616601bde9fb	625	lcp_wantoptions[pd].neg_asyncmap = 0;
AdamGreen	0:616601bde9fb	626	lcp_wantoptions[pd].neg_pcompression = 0;
AdamGreen	0:616601bde9fb	627	lcp_wantoptions[pd].neg_accompression = 0;
AdamGreen	0:616601bde9fb	628
AdamGreen	0:616601bde9fb	629	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
AdamGreen	0:616601bde9fb	630	lcp_allowoptions[pd].neg_asyncmap = 0;
AdamGreen	0:616601bde9fb	631	lcp_allowoptions[pd].neg_pcompression = 0;
AdamGreen	0:616601bde9fb	632	lcp_allowoptions[pd].neg_accompression = 0;
AdamGreen	0:616601bde9fb	633
AdamGreen	0:616601bde9fb	634	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
AdamGreen	0:616601bde9fb	635	pc->openFlag = 0;
AdamGreen	0:616601bde9fb	636	return PPPERR_OPEN;
AdamGreen	0:616601bde9fb	637	}
AdamGreen	0:616601bde9fb	638
AdamGreen	0:616601bde9fb	639	pppoe_connect(pc->pppoe_sc);
AdamGreen	0:616601bde9fb	640	}
AdamGreen	0:616601bde9fb	641
AdamGreen	0:616601bde9fb	642	return pd;
AdamGreen	0:616601bde9fb	643	}
AdamGreen	0:616601bde9fb	644	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	645
AdamGreen	0:616601bde9fb	646
AdamGreen	0:616601bde9fb	647	/* Close a PPP connection and release the descriptor.
AdamGreen	0:616601bde9fb	648	* Any outstanding packets in the queues are dropped.
AdamGreen	0:616601bde9fb	649	* Return 0 on success, an error code on failure. */
AdamGreen	0:616601bde9fb	650	int
AdamGreen	0:616601bde9fb	651	pppClose(int pd)
AdamGreen	0:616601bde9fb	652	{
AdamGreen	0:616601bde9fb	653	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	654	int st = 0;
AdamGreen	0:616601bde9fb	655
AdamGreen	0:616601bde9fb	656	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
AdamGreen	0:616601bde9fb	657
AdamGreen	0:616601bde9fb	658	/* Disconnect */
AdamGreen	0:616601bde9fb	659	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	660	if(pc->ethif) {
AdamGreen	0:616601bde9fb	661	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
AdamGreen	0:616601bde9fb	662	pc->errCode = PPPERR_USER;
AdamGreen	0:616601bde9fb	663	/* This will leave us at PHASE_DEAD. */
AdamGreen	0:616601bde9fb	664	pppStop(pd);
AdamGreen	0:616601bde9fb	665	} else
AdamGreen	0:616601bde9fb	666	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	667	{
AdamGreen	0:616601bde9fb	668	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	669	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
AdamGreen	0:616601bde9fb	670	pc->errCode = PPPERR_USER;
AdamGreen	0:616601bde9fb	671	/* This will leave us at PHASE_DEAD. */
AdamGreen	0:616601bde9fb	672	pppStop(pd);
AdamGreen	0:616601bde9fb	673	pppRecvWakeup(pd);
AdamGreen	0:616601bde9fb	674	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	675	}
AdamGreen	0:616601bde9fb	676
AdamGreen	0:616601bde9fb	677	return st;
AdamGreen	0:616601bde9fb	678	}
AdamGreen	0:616601bde9fb	679
AdamGreen	0:616601bde9fb	680	/* This function is called when carrier is lost on the PPP channel. */
AdamGreen	0:616601bde9fb	681	void
AdamGreen	0:616601bde9fb	682	pppSigHUP(int pd)
AdamGreen	0:616601bde9fb	683	{
AdamGreen	0:616601bde9fb	684	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	685	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	686	if(pc->ethif) {
AdamGreen	0:616601bde9fb	687	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
AdamGreen	0:616601bde9fb	688	pppHup(pd);
AdamGreen	0:616601bde9fb	689	} else
AdamGreen	0:616601bde9fb	690	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	691	{
AdamGreen	0:616601bde9fb	692	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	693	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
AdamGreen	0:616601bde9fb	694	pppHup(pd);
AdamGreen	0:616601bde9fb	695	pppRecvWakeup(pd);
AdamGreen	0:616601bde9fb	696	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	697	}
AdamGreen	0:616601bde9fb	698	}
AdamGreen	0:616601bde9fb	699
AdamGreen	0:616601bde9fb	700	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	701	static void
AdamGreen	0:616601bde9fb	702	nPut(PPPControl pc, struct pbuf nb)
AdamGreen	0:616601bde9fb	703	{
AdamGreen	0:616601bde9fb	704	struct pbuf *b;
AdamGreen	0:616601bde9fb	705	int c;
AdamGreen	0:616601bde9fb	706
AdamGreen	0:616601bde9fb	707	for(b = nb; b != NULL; b = b->next) {
AdamGreen	0:616601bde9fb	708	if((c = sio_write(pc->fd, (u8_t *)b->payload, b->len)) != b->len) {
AdamGreen	0:616601bde9fb	709	PPPDEBUG(LOG_WARNING,
AdamGreen	0:616601bde9fb	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));
AdamGreen	0:616601bde9fb	711	LINK_STATS_INC(link.err);
AdamGreen	0:616601bde9fb	712	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
AdamGreen	0:616601bde9fb	713	snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen	0:616601bde9fb	714	pbuf_free(nb);
AdamGreen	0:616601bde9fb	715	return;
AdamGreen	0:616601bde9fb	716	}
AdamGreen	0:616601bde9fb	717	}
AdamGreen	0:616601bde9fb	718
AdamGreen	0:616601bde9fb	719	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
AdamGreen	0:616601bde9fb	720	snmp_inc_ifoutucastpkts(&pc->netif);
AdamGreen	0:616601bde9fb	721	pbuf_free(nb);
AdamGreen	0:616601bde9fb	722	LINK_STATS_INC(link.xmit);
AdamGreen	0:616601bde9fb	723	}
AdamGreen	0:616601bde9fb	724
AdamGreen	0:616601bde9fb	725	/*
AdamGreen	0:616601bde9fb	726	* pppAppend - append given character to end of given pbuf. If outACCM
AdamGreen	0:616601bde9fb	727	* is not NULL and the character needs to be escaped, do so.
AdamGreen	0:616601bde9fb	728	* If pbuf is full, append another.
AdamGreen	0:616601bde9fb	729	* Return the current pbuf.
AdamGreen	0:616601bde9fb	730	*/
AdamGreen	0:616601bde9fb	731	static struct pbuf *
AdamGreen	0:616601bde9fb	732	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
AdamGreen	0:616601bde9fb	733	{
AdamGreen	0:616601bde9fb	734	struct pbuf *tb = nb;
AdamGreen	0:616601bde9fb	735
AdamGreen	0:616601bde9fb	736	/* Make sure there is room for the character and an escape code.
AdamGreen	0:616601bde9fb	737	* Sure we don't quite fill the buffer if the character doesn't
AdamGreen	0:616601bde9fb	738	* get escaped but is one character worth complicating this? */
AdamGreen	0:616601bde9fb	739	/* Note: We assume no packet header. */
AdamGreen	0:616601bde9fb	740	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
AdamGreen	0:616601bde9fb	741	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
AdamGreen	0:616601bde9fb	742	if (tb) {
AdamGreen	0:616601bde9fb	743	nb->next = tb;
AdamGreen	0:616601bde9fb	744	} else {
AdamGreen	0:616601bde9fb	745	LINK_STATS_INC(link.memerr);
AdamGreen	0:616601bde9fb	746	}
AdamGreen	0:616601bde9fb	747	nb = tb;
AdamGreen	0:616601bde9fb	748	}
AdamGreen	0:616601bde9fb	749
AdamGreen	0:616601bde9fb	750	if (nb) {
AdamGreen	0:616601bde9fb	751	if (outACCM && ESCAPE_P(*outACCM, c)) {
AdamGreen	0:616601bde9fb	752	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
AdamGreen	0:616601bde9fb	753	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
AdamGreen	0:616601bde9fb	754	} else {
AdamGreen	0:616601bde9fb	755	((u_char)nb->payload + nb->len++) = c;
AdamGreen	0:616601bde9fb	756	}
AdamGreen	0:616601bde9fb	757	}
AdamGreen	0:616601bde9fb	758
AdamGreen	0:616601bde9fb	759	return tb;
AdamGreen	0:616601bde9fb	760	}
AdamGreen	0:616601bde9fb	761	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	762
AdamGreen	0:616601bde9fb	763	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	764	static err_t
AdamGreen	0:616601bde9fb	765	pppifOutputOverEthernet(int pd, struct pbuf *p)
AdamGreen	0:616601bde9fb	766	{
AdamGreen	0:616601bde9fb	767	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	768	struct pbuf *pb;
AdamGreen	0:616601bde9fb	769	u_short protocol = PPP_IP;
AdamGreen	0:616601bde9fb	770	int i=0;
AdamGreen	0:616601bde9fb	771	u16_t tot_len;
AdamGreen	0:616601bde9fb	772
AdamGreen	0:616601bde9fb	773	/* @todo: try to use pbuf_header() here! */
AdamGreen	0:616601bde9fb	774	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
AdamGreen	0:616601bde9fb	775	if(!pb) {
AdamGreen	0:616601bde9fb	776	LINK_STATS_INC(link.memerr);
AdamGreen	0:616601bde9fb	777	LINK_STATS_INC(link.proterr);
AdamGreen	0:616601bde9fb	778	snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen	0:616601bde9fb	779	return ERR_MEM;
AdamGreen	0:616601bde9fb	780	}
AdamGreen	0:616601bde9fb	781
AdamGreen	0:616601bde9fb	782	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
AdamGreen	0:616601bde9fb	783
AdamGreen	0:616601bde9fb	784	pc->lastXMit = sys_jiffies();
AdamGreen	0:616601bde9fb	785
AdamGreen	0:616601bde9fb	786	if (!pc->pcomp \|\| protocol > 0xFF) {
AdamGreen	0:616601bde9fb	787	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
AdamGreen	0:616601bde9fb	788	}
AdamGreen	0:616601bde9fb	789	((u_char)pb->payload + i) = protocol & 0xFF;
AdamGreen	0:616601bde9fb	790
AdamGreen	0:616601bde9fb	791	pbuf_chain(pb, p);
AdamGreen	0:616601bde9fb	792	tot_len = pb->tot_len;
AdamGreen	0:616601bde9fb	793
AdamGreen	0:616601bde9fb	794	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
AdamGreen	0:616601bde9fb	795	LINK_STATS_INC(link.err);
AdamGreen	0:616601bde9fb	796	snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen	0:616601bde9fb	797	return PPPERR_DEVICE;
AdamGreen	0:616601bde9fb	798	}
AdamGreen	0:616601bde9fb	799
AdamGreen	0:616601bde9fb	800	snmp_add_ifoutoctets(&pc->netif, tot_len);
AdamGreen	0:616601bde9fb	801	snmp_inc_ifoutucastpkts(&pc->netif);
AdamGreen	0:616601bde9fb	802	LINK_STATS_INC(link.xmit);
AdamGreen	0:616601bde9fb	803	return ERR_OK;
AdamGreen	0:616601bde9fb	804	}
AdamGreen	0:616601bde9fb	805	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	806
AdamGreen	0:616601bde9fb	807	/* Send a packet on the given connection. */
AdamGreen	0:616601bde9fb	808	static err_t
AdamGreen	0:616601bde9fb	809	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
AdamGreen	0:616601bde9fb	810	{
AdamGreen	0:616601bde9fb	811	int pd = (int)(size_t)netif->state;
AdamGreen	0:616601bde9fb	812	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	813	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	814	u_short protocol = PPP_IP;
AdamGreen	0:616601bde9fb	815	u_int fcsOut = PPP_INITFCS;
AdamGreen	0:616601bde9fb	816	struct pbuf headMB = NULL, tailMB = NULL, *p;
AdamGreen	0:616601bde9fb	817	u_char c;
AdamGreen	0:616601bde9fb	818	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	819
AdamGreen	0:616601bde9fb	820	LWIP_UNUSED_ARG(ipaddr);
AdamGreen	0:616601bde9fb	821
AdamGreen	0:616601bde9fb	822	/* Validate parameters. */
AdamGreen	0:616601bde9fb	823	/* We let any protocol value go through - it can't hurt us
AdamGreen	0:616601bde9fb	824	* and the peer will just drop it if it's not accepting it. */
AdamGreen	0:616601bde9fb	825	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
AdamGreen	0:616601bde9fb	826	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
AdamGreen	0:616601bde9fb	827	pd, PPP_IP, pb));
AdamGreen	0:616601bde9fb	828	LINK_STATS_INC(link.opterr);
AdamGreen	0:616601bde9fb	829	LINK_STATS_INC(link.drop);
AdamGreen	0:616601bde9fb	830	snmp_inc_ifoutdiscards(netif);
AdamGreen	0:616601bde9fb	831	return ERR_ARG;
AdamGreen	0:616601bde9fb	832	}
AdamGreen	0:616601bde9fb	833
AdamGreen	0:616601bde9fb	834	/* Check that the link is up. */
AdamGreen	0:616601bde9fb	835	if (lcp_phase[pd] == PHASE_DEAD) {
AdamGreen	0:616601bde9fb	836	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
AdamGreen	0:616601bde9fb	837	LINK_STATS_INC(link.rterr);
AdamGreen	0:616601bde9fb	838	LINK_STATS_INC(link.drop);
AdamGreen	0:616601bde9fb	839	snmp_inc_ifoutdiscards(netif);
AdamGreen	0:616601bde9fb	840	return ERR_RTE;
AdamGreen	0:616601bde9fb	841	}
AdamGreen	0:616601bde9fb	842
AdamGreen	0:616601bde9fb	843	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	844	if(pc->ethif) {
AdamGreen	0:616601bde9fb	845	return pppifOutputOverEthernet(pd, pb);
AdamGreen	0:616601bde9fb	846	}
AdamGreen	0:616601bde9fb	847	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	848
AdamGreen	0:616601bde9fb	849	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	850	/* Grab an output buffer. */
AdamGreen	0:616601bde9fb	851	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
AdamGreen	0:616601bde9fb	852	if (headMB == NULL) {
AdamGreen	0:616601bde9fb	853	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
AdamGreen	0:616601bde9fb	854	LINK_STATS_INC(link.memerr);
AdamGreen	0:616601bde9fb	855	LINK_STATS_INC(link.drop);
AdamGreen	0:616601bde9fb	856	snmp_inc_ifoutdiscards(netif);
AdamGreen	0:616601bde9fb	857	return ERR_MEM;
AdamGreen	0:616601bde9fb	858	}
AdamGreen	0:616601bde9fb	859
AdamGreen	0:616601bde9fb	860	#if VJ_SUPPORT
AdamGreen	0:616601bde9fb	861	/*
AdamGreen	0:616601bde9fb	862	* Attempt Van Jacobson header compression if VJ is configured and
AdamGreen	0:616601bde9fb	863	* this is an IP packet.
AdamGreen	0:616601bde9fb	864	*/
AdamGreen	0:616601bde9fb	865	if (protocol == PPP_IP && pc->vjEnabled) {
AdamGreen	0:616601bde9fb	866	switch (vj_compress_tcp(&pc->vjComp, pb)) {
AdamGreen	0:616601bde9fb	867	case TYPE_IP:
AdamGreen	0:616601bde9fb	868	/* No change...
AdamGreen	0:616601bde9fb	869	protocol = PPP_IP_PROTOCOL; */
AdamGreen	0:616601bde9fb	870	break;
AdamGreen	0:616601bde9fb	871	case TYPE_COMPRESSED_TCP:
AdamGreen	0:616601bde9fb	872	protocol = PPP_VJC_COMP;
AdamGreen	0:616601bde9fb	873	break;
AdamGreen	0:616601bde9fb	874	case TYPE_UNCOMPRESSED_TCP:
AdamGreen	0:616601bde9fb	875	protocol = PPP_VJC_UNCOMP;
AdamGreen	0:616601bde9fb	876	break;
AdamGreen	0:616601bde9fb	877	default:
AdamGreen	0:616601bde9fb	878	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
AdamGreen	0:616601bde9fb	879	LINK_STATS_INC(link.proterr);
AdamGreen	0:616601bde9fb	880	LINK_STATS_INC(link.drop);
AdamGreen	0:616601bde9fb	881	snmp_inc_ifoutdiscards(netif);
AdamGreen	0:616601bde9fb	882	pbuf_free(headMB);
AdamGreen	0:616601bde9fb	883	return ERR_VAL;
AdamGreen	0:616601bde9fb	884	}
AdamGreen	0:616601bde9fb	885	}
AdamGreen	0:616601bde9fb	886	#endif /* VJ_SUPPORT */
AdamGreen	0:616601bde9fb	887
AdamGreen	0:616601bde9fb	888	tailMB = headMB;
AdamGreen	0:616601bde9fb	889
AdamGreen	0:616601bde9fb	890	/* Build the PPP header. */
AdamGreen	0:616601bde9fb	891	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
AdamGreen	0:616601bde9fb	892	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
AdamGreen	0:616601bde9fb	893	}
AdamGreen	0:616601bde9fb	894
AdamGreen	0:616601bde9fb	895	pc->lastXMit = sys_jiffies();
AdamGreen	0:616601bde9fb	896	if (!pc->accomp) {
AdamGreen	0:616601bde9fb	897	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
AdamGreen	0:616601bde9fb	898	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
AdamGreen	0:616601bde9fb	899	fcsOut = PPP_FCS(fcsOut, PPP_UI);
AdamGreen	0:616601bde9fb	900	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
AdamGreen	0:616601bde9fb	901	}
AdamGreen	0:616601bde9fb	902	if (!pc->pcomp \|\| protocol > 0xFF) {
AdamGreen	0:616601bde9fb	903	c = (protocol >> 8) & 0xFF;
AdamGreen	0:616601bde9fb	904	fcsOut = PPP_FCS(fcsOut, c);
AdamGreen	0:616601bde9fb	905	tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen	0:616601bde9fb	906	}
AdamGreen	0:616601bde9fb	907	c = protocol & 0xFF;
AdamGreen	0:616601bde9fb	908	fcsOut = PPP_FCS(fcsOut, c);
AdamGreen	0:616601bde9fb	909	tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen	0:616601bde9fb	910
AdamGreen	0:616601bde9fb	911	/* Load packet. */
AdamGreen	0:616601bde9fb	912	for(p = pb; p; p = p->next) {
AdamGreen	0:616601bde9fb	913	int n;
AdamGreen	0:616601bde9fb	914	u_char *sPtr;
AdamGreen	0:616601bde9fb	915
AdamGreen	0:616601bde9fb	916	sPtr = (u_char*)p->payload;
AdamGreen	0:616601bde9fb	917	n = p->len;
AdamGreen	0:616601bde9fb	918	while (n-- > 0) {
AdamGreen	0:616601bde9fb	919	c = *sPtr++;
AdamGreen	0:616601bde9fb	920
AdamGreen	0:616601bde9fb	921	/* Update FCS before checking for special characters. */
AdamGreen	0:616601bde9fb	922	fcsOut = PPP_FCS(fcsOut, c);
AdamGreen	0:616601bde9fb	923
AdamGreen	0:616601bde9fb	924	/* Copy to output buffer escaping special characters. */
AdamGreen	0:616601bde9fb	925	tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen	0:616601bde9fb	926	}
AdamGreen	0:616601bde9fb	927	}
AdamGreen	0:616601bde9fb	928
AdamGreen	0:616601bde9fb	929	/* Add FCS and trailing flag. */
AdamGreen	0:616601bde9fb	930	c = ~fcsOut & 0xFF;
AdamGreen	0:616601bde9fb	931	tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen	0:616601bde9fb	932	c = (~fcsOut >> 8) & 0xFF;
AdamGreen	0:616601bde9fb	933	tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen	0:616601bde9fb	934	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
AdamGreen	0:616601bde9fb	935
AdamGreen	0:616601bde9fb	936	/* If we failed to complete the packet, throw it away. */
AdamGreen	0:616601bde9fb	937	if (!tailMB) {
AdamGreen	0:616601bde9fb	938	PPPDEBUG(LOG_WARNING,
AdamGreen	0:616601bde9fb	939	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
AdamGreen	0:616601bde9fb	940	pd, protocol));
AdamGreen	0:616601bde9fb	941	pbuf_free(headMB);
AdamGreen	0:616601bde9fb	942	LINK_STATS_INC(link.memerr);
AdamGreen	0:616601bde9fb	943	LINK_STATS_INC(link.drop);
AdamGreen	0:616601bde9fb	944	snmp_inc_ifoutdiscards(netif);
AdamGreen	0:616601bde9fb	945	return ERR_MEM;
AdamGreen	0:616601bde9fb	946	}
AdamGreen	0:616601bde9fb	947
AdamGreen	0:616601bde9fb	948	/* Send it. */
AdamGreen	0:616601bde9fb	949	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
AdamGreen	0:616601bde9fb	950
AdamGreen	0:616601bde9fb	951	nPut(pc, headMB);
AdamGreen	0:616601bde9fb	952	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	953
AdamGreen	0:616601bde9fb	954	return ERR_OK;
AdamGreen	0:616601bde9fb	955	}
AdamGreen	0:616601bde9fb	956
AdamGreen	0:616601bde9fb	957	/* Get and set parameters for the given connection.
AdamGreen	0:616601bde9fb	958	* Return 0 on success, an error code on failure. */
AdamGreen	0:616601bde9fb	959	int
AdamGreen	0:616601bde9fb	960	pppIOCtl(int pd, int cmd, void *arg)
AdamGreen	0:616601bde9fb	961	{
AdamGreen	0:616601bde9fb	962	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	963	int st = 0;
AdamGreen	0:616601bde9fb	964
AdamGreen	0:616601bde9fb	965	if (pd < 0 \|\| pd >= NUM_PPP) {
AdamGreen	0:616601bde9fb	966	st = PPPERR_PARAM;
AdamGreen	0:616601bde9fb	967	} else {
AdamGreen	0:616601bde9fb	968	switch(cmd) {
AdamGreen	0:616601bde9fb	969	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
AdamGreen	0:616601bde9fb	970	if (arg) {
AdamGreen	0:616601bde9fb	971	(int )arg = (int)(pc->if_up);
AdamGreen	0:616601bde9fb	972	} else {
AdamGreen	0:616601bde9fb	973	st = PPPERR_PARAM;
AdamGreen	0:616601bde9fb	974	}
AdamGreen	0:616601bde9fb	975	break;
AdamGreen	0:616601bde9fb	976	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
AdamGreen	0:616601bde9fb	977	if (arg) {
AdamGreen	0:616601bde9fb	978	pc->errCode = (int )arg;
AdamGreen	0:616601bde9fb	979	} else {
AdamGreen	0:616601bde9fb	980	st = PPPERR_PARAM;
AdamGreen	0:616601bde9fb	981	}
AdamGreen	0:616601bde9fb	982	break;
AdamGreen	0:616601bde9fb	983	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
AdamGreen	0:616601bde9fb	984	if (arg) {
AdamGreen	0:616601bde9fb	985	(int )arg = (int)(pc->errCode);
AdamGreen	0:616601bde9fb	986	} else {
AdamGreen	0:616601bde9fb	987	st = PPPERR_PARAM;
AdamGreen	0:616601bde9fb	988	}
AdamGreen	0:616601bde9fb	989	break;
AdamGreen	0:616601bde9fb	990	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	991	case PPPCTLG_FD: /* Get the fd associated with the ppp */
AdamGreen	0:616601bde9fb	992	if (arg) {
AdamGreen	0:616601bde9fb	993	(sio_fd_t )arg = pc->fd;
AdamGreen	0:616601bde9fb	994	} else {
AdamGreen	0:616601bde9fb	995	st = PPPERR_PARAM;
AdamGreen	0:616601bde9fb	996	}
AdamGreen	0:616601bde9fb	997	break;
AdamGreen	0:616601bde9fb	998	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	999	default:
AdamGreen	0:616601bde9fb	1000	st = PPPERR_PARAM;
AdamGreen	0:616601bde9fb	1001	break;
AdamGreen	0:616601bde9fb	1002	}
AdamGreen	0:616601bde9fb	1003	}
AdamGreen	0:616601bde9fb	1004
AdamGreen	0:616601bde9fb	1005	return st;
AdamGreen	0:616601bde9fb	1006	}
AdamGreen	0:616601bde9fb	1007
AdamGreen	0:616601bde9fb	1008	/*
AdamGreen	0:616601bde9fb	1009	* Return the Maximum Transmission Unit for the given PPP connection.
AdamGreen	0:616601bde9fb	1010	*/
AdamGreen	0:616601bde9fb	1011	u_short
AdamGreen	0:616601bde9fb	1012	pppMTU(int pd)
AdamGreen	0:616601bde9fb	1013	{
AdamGreen	0:616601bde9fb	1014	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	1015	u_short st;
AdamGreen	0:616601bde9fb	1016
AdamGreen	0:616601bde9fb	1017	/* Validate parameters. */
AdamGreen	0:616601bde9fb	1018	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
AdamGreen	0:616601bde9fb	1019	st = 0;
AdamGreen	0:616601bde9fb	1020	} else {
AdamGreen	0:616601bde9fb	1021	st = pc->mtu;
AdamGreen	0:616601bde9fb	1022	}
AdamGreen	0:616601bde9fb	1023
AdamGreen	0:616601bde9fb	1024	return st;
AdamGreen	0:616601bde9fb	1025	}
AdamGreen	0:616601bde9fb	1026
AdamGreen	0:616601bde9fb	1027	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	1028	int
AdamGreen	0:616601bde9fb	1029	pppWriteOverEthernet(int pd, const u_char *s, int n)
AdamGreen	0:616601bde9fb	1030	{
AdamGreen	0:616601bde9fb	1031	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	1032	struct pbuf *pb;
AdamGreen	0:616601bde9fb	1033
AdamGreen	0:616601bde9fb	1034	/* skip address & flags */
AdamGreen	0:616601bde9fb	1035	s += 2;
AdamGreen	0:616601bde9fb	1036	n -= 2;
AdamGreen	0:616601bde9fb	1037
AdamGreen	0:616601bde9fb	1038	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
AdamGreen	0:616601bde9fb	1039	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
AdamGreen	0:616601bde9fb	1040	if(!pb) {
AdamGreen	0:616601bde9fb	1041	LINK_STATS_INC(link.memerr);
AdamGreen	0:616601bde9fb	1042	LINK_STATS_INC(link.proterr);
AdamGreen	0:616601bde9fb	1043	snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen	0:616601bde9fb	1044	return PPPERR_ALLOC;
AdamGreen	0:616601bde9fb	1045	}
AdamGreen	0:616601bde9fb	1046
AdamGreen	0:616601bde9fb	1047	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
AdamGreen	0:616601bde9fb	1048
AdamGreen	0:616601bde9fb	1049	pc->lastXMit = sys_jiffies();
AdamGreen	0:616601bde9fb	1050
AdamGreen	0:616601bde9fb	1051	MEMCPY(pb->payload, s, n);
AdamGreen	0:616601bde9fb	1052
AdamGreen	0:616601bde9fb	1053	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
AdamGreen	0:616601bde9fb	1054	LINK_STATS_INC(link.err);
AdamGreen	0:616601bde9fb	1055	snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen	0:616601bde9fb	1056	return PPPERR_DEVICE;
AdamGreen	0:616601bde9fb	1057	}
AdamGreen	0:616601bde9fb	1058
AdamGreen	0:616601bde9fb	1059	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
AdamGreen	0:616601bde9fb	1060	snmp_inc_ifoutucastpkts(&pc->netif);
AdamGreen	0:616601bde9fb	1061	LINK_STATS_INC(link.xmit);
AdamGreen	0:616601bde9fb	1062	return PPPERR_NONE;
AdamGreen	0:616601bde9fb	1063	}
AdamGreen	0:616601bde9fb	1064	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	1065
AdamGreen	0:616601bde9fb	1066	/*
AdamGreen	0:616601bde9fb	1067	* Write n characters to a ppp link.
AdamGreen	0:616601bde9fb	1068	* RETURN: >= 0 Number of characters written
AdamGreen	0:616601bde9fb	1069	* -1 Failed to write to device
AdamGreen	0:616601bde9fb	1070	*/
AdamGreen	0:616601bde9fb	1071	int
AdamGreen	0:616601bde9fb	1072	pppWrite(int pd, const u_char *s, int n)
AdamGreen	0:616601bde9fb	1073	{
AdamGreen	0:616601bde9fb	1074	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	1075	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	1076	u_char c;
AdamGreen	0:616601bde9fb	1077	u_int fcsOut;
AdamGreen	0:616601bde9fb	1078	struct pbuf headMB, tailMB;
AdamGreen	0:616601bde9fb	1079	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	1080
AdamGreen	0:616601bde9fb	1081	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	1082	if(pc->ethif) {
AdamGreen	0:616601bde9fb	1083	return pppWriteOverEthernet(pd, s, n);
AdamGreen	0:616601bde9fb	1084	}
AdamGreen	0:616601bde9fb	1085	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	1086
AdamGreen	0:616601bde9fb	1087	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	1088	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
AdamGreen	0:616601bde9fb	1089	if (headMB == NULL) {
AdamGreen	0:616601bde9fb	1090	LINK_STATS_INC(link.memerr);
AdamGreen	0:616601bde9fb	1091	LINK_STATS_INC(link.proterr);
AdamGreen	0:616601bde9fb	1092	snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen	0:616601bde9fb	1093	return PPPERR_ALLOC;
AdamGreen	0:616601bde9fb	1094	}
AdamGreen	0:616601bde9fb	1095
AdamGreen	0:616601bde9fb	1096	tailMB = headMB;
AdamGreen	0:616601bde9fb	1097
AdamGreen	0:616601bde9fb	1098	/* If the link has been idle, we'll send a fresh flag character to
AdamGreen	0:616601bde9fb	1099	* flush any noise. */
AdamGreen	0:616601bde9fb	1100	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
AdamGreen	0:616601bde9fb	1101	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
AdamGreen	0:616601bde9fb	1102	}
AdamGreen	0:616601bde9fb	1103	pc->lastXMit = sys_jiffies();
AdamGreen	0:616601bde9fb	1104
AdamGreen	0:616601bde9fb	1105	fcsOut = PPP_INITFCS;
AdamGreen	0:616601bde9fb	1106	/* Load output buffer. */
AdamGreen	0:616601bde9fb	1107	while (n-- > 0) {
AdamGreen	0:616601bde9fb	1108	c = *s++;
AdamGreen	0:616601bde9fb	1109
AdamGreen	0:616601bde9fb	1110	/* Update FCS before checking for special characters. */
AdamGreen	0:616601bde9fb	1111	fcsOut = PPP_FCS(fcsOut, c);
AdamGreen	0:616601bde9fb	1112
AdamGreen	0:616601bde9fb	1113	/* Copy to output buffer escaping special characters. */
AdamGreen	0:616601bde9fb	1114	tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen	0:616601bde9fb	1115	}
AdamGreen	0:616601bde9fb	1116
AdamGreen	0:616601bde9fb	1117	/* Add FCS and trailing flag. */
AdamGreen	0:616601bde9fb	1118	c = ~fcsOut & 0xFF;
AdamGreen	0:616601bde9fb	1119	tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen	0:616601bde9fb	1120	c = (~fcsOut >> 8) & 0xFF;
AdamGreen	0:616601bde9fb	1121	tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen	0:616601bde9fb	1122	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
AdamGreen	0:616601bde9fb	1123
AdamGreen	0:616601bde9fb	1124	/* If we failed to complete the packet, throw it away.
AdamGreen	0:616601bde9fb	1125	* Otherwise send it. */
AdamGreen	0:616601bde9fb	1126	if (!tailMB) {
AdamGreen	0:616601bde9fb	1127	PPPDEBUG(LOG_WARNING,
AdamGreen	0:616601bde9fb	1128	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
AdamGreen	0:616601bde9fb	1129	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
AdamGreen	0:616601bde9fb	1130	pbuf_free(headMB);
AdamGreen	0:616601bde9fb	1131	LINK_STATS_INC(link.memerr);
AdamGreen	0:616601bde9fb	1132	LINK_STATS_INC(link.proterr);
AdamGreen	0:616601bde9fb	1133	snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen	0:616601bde9fb	1134	return PPPERR_ALLOC;
AdamGreen	0:616601bde9fb	1135	}
AdamGreen	0:616601bde9fb	1136
AdamGreen	0:616601bde9fb	1137	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
AdamGreen	0:616601bde9fb	1138	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
AdamGreen	0:616601bde9fb	1139	nPut(pc, headMB);
AdamGreen	0:616601bde9fb	1140	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	1141
AdamGreen	0:616601bde9fb	1142	return PPPERR_NONE;
AdamGreen	0:616601bde9fb	1143	}
AdamGreen	0:616601bde9fb	1144
AdamGreen	0:616601bde9fb	1145	/*
AdamGreen	0:616601bde9fb	1146	* ppp_send_config - configure the transmit characteristics of
AdamGreen	0:616601bde9fb	1147	* the ppp interface.
AdamGreen	0:616601bde9fb	1148	*/
AdamGreen	0:616601bde9fb	1149	void
AdamGreen	0:616601bde9fb	1150	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
AdamGreen	0:616601bde9fb	1151	{
AdamGreen	0:616601bde9fb	1152	PPPControl *pc = &pppControl[unit];
AdamGreen	0:616601bde9fb	1153	int i;
AdamGreen	0:616601bde9fb	1154
AdamGreen	0:616601bde9fb	1155	pc->mtu = mtu;
AdamGreen	0:616601bde9fb	1156	pc->pcomp = pcomp;
AdamGreen	0:616601bde9fb	1157	pc->accomp = accomp;
AdamGreen	0:616601bde9fb	1158
AdamGreen	0:616601bde9fb	1159	/* Load the ACCM bits for the 32 control codes. */
AdamGreen	0:616601bde9fb	1160	for (i = 0; i < 32/8; i++) {
AdamGreen	0:616601bde9fb	1161	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
AdamGreen	0:616601bde9fb	1162	}
AdamGreen	0:616601bde9fb	1163	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
AdamGreen	0:616601bde9fb	1164	unit,
AdamGreen	0:616601bde9fb	1165	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
AdamGreen	0:616601bde9fb	1166	}
AdamGreen	0:616601bde9fb	1167
AdamGreen	0:616601bde9fb	1168
AdamGreen	0:616601bde9fb	1169	/*
AdamGreen	0:616601bde9fb	1170	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
AdamGreen	0:616601bde9fb	1171	*/
AdamGreen	0:616601bde9fb	1172	void
AdamGreen	0:616601bde9fb	1173	ppp_set_xaccm(int unit, ext_accm *accm)
AdamGreen	0:616601bde9fb	1174	{
AdamGreen	0:616601bde9fb	1175	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
AdamGreen	0:616601bde9fb	1176	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
AdamGreen	0:616601bde9fb	1177	unit,
AdamGreen	0:616601bde9fb	1178	pppControl[unit].outACCM[0],
AdamGreen	0:616601bde9fb	1179	pppControl[unit].outACCM[1],
AdamGreen	0:616601bde9fb	1180	pppControl[unit].outACCM[2],
AdamGreen	0:616601bde9fb	1181	pppControl[unit].outACCM[3]));
AdamGreen	0:616601bde9fb	1182	}
AdamGreen	0:616601bde9fb	1183
AdamGreen	0:616601bde9fb	1184
AdamGreen	0:616601bde9fb	1185	/*
AdamGreen	0:616601bde9fb	1186	* ppp_recv_config - configure the receive-side characteristics of
AdamGreen	0:616601bde9fb	1187	* the ppp interface.
AdamGreen	0:616601bde9fb	1188	*/
AdamGreen	0:616601bde9fb	1189	void
AdamGreen	0:616601bde9fb	1190	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
AdamGreen	0:616601bde9fb	1191	{
AdamGreen	0:616601bde9fb	1192	PPPControl *pc = &pppControl[unit];
AdamGreen	0:616601bde9fb	1193	int i;
AdamGreen	0:616601bde9fb	1194	SYS_ARCH_DECL_PROTECT(lev);
AdamGreen	0:616601bde9fb	1195
AdamGreen	0:616601bde9fb	1196	LWIP_UNUSED_ARG(accomp);
AdamGreen	0:616601bde9fb	1197	LWIP_UNUSED_ARG(pcomp);
AdamGreen	0:616601bde9fb	1198	LWIP_UNUSED_ARG(mru);
AdamGreen	0:616601bde9fb	1199
AdamGreen	0:616601bde9fb	1200	/* Load the ACCM bits for the 32 control codes. */
AdamGreen	0:616601bde9fb	1201	SYS_ARCH_PROTECT(lev);
AdamGreen	0:616601bde9fb	1202	for (i = 0; i < 32 / 8; i++) {
AdamGreen	0:616601bde9fb	1203	/* @todo: does this work? ext_accm has been modified from pppd! */
AdamGreen	0:616601bde9fb	1204	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
AdamGreen	0:616601bde9fb	1205	}
AdamGreen	0:616601bde9fb	1206	SYS_ARCH_UNPROTECT(lev);
AdamGreen	0:616601bde9fb	1207	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
AdamGreen	0:616601bde9fb	1208	unit,
AdamGreen	0:616601bde9fb	1209	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
AdamGreen	0:616601bde9fb	1210	}
AdamGreen	0:616601bde9fb	1211
AdamGreen	0:616601bde9fb	1212	#if 0
AdamGreen	0:616601bde9fb	1213	/*
AdamGreen	0:616601bde9fb	1214	* ccp_test - ask kernel whether a given compression method
AdamGreen	0:616601bde9fb	1215	* is acceptable for use. Returns 1 if the method and parameters
AdamGreen	0:616601bde9fb	1216	* are OK, 0 if the method is known but the parameters are not OK
AdamGreen	0:616601bde9fb	1217	* (e.g. code size should be reduced), or -1 if the method is unknown.
AdamGreen	0:616601bde9fb	1218	*/
AdamGreen	0:616601bde9fb	1219	int
AdamGreen	0:616601bde9fb	1220	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
AdamGreen	0:616601bde9fb	1221	{
AdamGreen	0:616601bde9fb	1222	return 0; /* XXX Currently no compression. */
AdamGreen	0:616601bde9fb	1223	}
AdamGreen	0:616601bde9fb	1224
AdamGreen	0:616601bde9fb	1225	/*
AdamGreen	0:616601bde9fb	1226	* ccp_flags_set - inform kernel about the current state of CCP.
AdamGreen	0:616601bde9fb	1227	*/
AdamGreen	0:616601bde9fb	1228	void
AdamGreen	0:616601bde9fb	1229	ccp_flags_set(int unit, int isopen, int isup)
AdamGreen	0:616601bde9fb	1230	{
AdamGreen	0:616601bde9fb	1231	/* XXX */
AdamGreen	0:616601bde9fb	1232	}
AdamGreen	0:616601bde9fb	1233
AdamGreen	0:616601bde9fb	1234	/*
AdamGreen	0:616601bde9fb	1235	* ccp_fatal_error - returns 1 if decompression was disabled as a
AdamGreen	0:616601bde9fb	1236	* result of an error detected after decompression of a packet,
AdamGreen	0:616601bde9fb	1237	* 0 otherwise. This is necessary because of patent nonsense.
AdamGreen	0:616601bde9fb	1238	*/
AdamGreen	0:616601bde9fb	1239	int
AdamGreen	0:616601bde9fb	1240	ccp_fatal_error(int unit)
AdamGreen	0:616601bde9fb	1241	{
AdamGreen	0:616601bde9fb	1242	/* XXX */
AdamGreen	0:616601bde9fb	1243	return 0;
AdamGreen	0:616601bde9fb	1244	}
AdamGreen	0:616601bde9fb	1245	#endif
AdamGreen	0:616601bde9fb	1246
AdamGreen	0:616601bde9fb	1247	/*
AdamGreen	0:616601bde9fb	1248	* get_idle_time - return how long the link has been idle.
AdamGreen	0:616601bde9fb	1249	*/
AdamGreen	0:616601bde9fb	1250	int
AdamGreen	0:616601bde9fb	1251	get_idle_time(int u, struct ppp_idle *ip)
AdamGreen	0:616601bde9fb	1252	{
AdamGreen	0:616601bde9fb	1253	/* XXX */
AdamGreen	0:616601bde9fb	1254	LWIP_UNUSED_ARG(u);
AdamGreen	0:616601bde9fb	1255	LWIP_UNUSED_ARG(ip);
AdamGreen	0:616601bde9fb	1256
AdamGreen	0:616601bde9fb	1257	return 0;
AdamGreen	0:616601bde9fb	1258	}
AdamGreen	0:616601bde9fb	1259
AdamGreen	0:616601bde9fb	1260
AdamGreen	0:616601bde9fb	1261	/*
AdamGreen	0:616601bde9fb	1262	* Return user specified netmask, modified by any mask we might determine
AdamGreen	0:616601bde9fb	1263	* for address `addr' (in network byte order).
AdamGreen	0:616601bde9fb	1264	* Here we scan through the system's list of interfaces, looking for
AdamGreen	0:616601bde9fb	1265	* any non-point-to-point interfaces which might appear to be on the same
AdamGreen	0:616601bde9fb	1266	* network as `addr'. If we find any, we OR in their netmask to the
AdamGreen	0:616601bde9fb	1267	* user-specified netmask.
AdamGreen	0:616601bde9fb	1268	*/
AdamGreen	0:616601bde9fb	1269	u32_t
AdamGreen	0:616601bde9fb	1270	GetMask(u32_t addr)
AdamGreen	0:616601bde9fb	1271	{
AdamGreen	0:616601bde9fb	1272	u32_t mask, nmask;
AdamGreen	0:616601bde9fb	1273
AdamGreen	0:616601bde9fb	1274	htonl(addr);
AdamGreen	0:616601bde9fb	1275	if (IP_CLASSA(addr)) { /* determine network mask for address class */
AdamGreen	0:616601bde9fb	1276	nmask = IP_CLASSA_NET;
AdamGreen	0:616601bde9fb	1277	} else if (IP_CLASSB(addr)) {
AdamGreen	0:616601bde9fb	1278	nmask = IP_CLASSB_NET;
AdamGreen	0:616601bde9fb	1279	} else {
AdamGreen	0:616601bde9fb	1280	nmask = IP_CLASSC_NET;
AdamGreen	0:616601bde9fb	1281	}
AdamGreen	0:616601bde9fb	1282
AdamGreen	0:616601bde9fb	1283	/* class D nets are disallowed by bad_ip_adrs */
AdamGreen	0:616601bde9fb	1284	mask = subnetMask \| htonl(nmask);
AdamGreen	0:616601bde9fb	1285
AdamGreen	0:616601bde9fb	1286	/* XXX
AdamGreen	0:616601bde9fb	1287	* Scan through the system's network interfaces.
AdamGreen	0:616601bde9fb	1288	* Get each netmask and OR them into our mask.
AdamGreen	0:616601bde9fb	1289	*/
AdamGreen	0:616601bde9fb	1290
AdamGreen	0:616601bde9fb	1291	return mask;
AdamGreen	0:616601bde9fb	1292	}
AdamGreen	0:616601bde9fb	1293
AdamGreen	0:616601bde9fb	1294	/*
AdamGreen	0:616601bde9fb	1295	* sifvjcomp - config tcp header compression
AdamGreen	0:616601bde9fb	1296	*/
AdamGreen	0:616601bde9fb	1297	int
AdamGreen	0:616601bde9fb	1298	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
AdamGreen	0:616601bde9fb	1299	{
AdamGreen	0:616601bde9fb	1300	#if PPPOS_SUPPORT && VJ_SUPPORT
AdamGreen	0:616601bde9fb	1301	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	1302
AdamGreen	0:616601bde9fb	1303	pc->vjEnabled = vjcomp;
AdamGreen	0:616601bde9fb	1304	pc->vjComp.compressSlot = cidcomp;
AdamGreen	0:616601bde9fb	1305	pc->vjComp.maxSlotIndex = maxcid;
AdamGreen	0:616601bde9fb	1306	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
AdamGreen	0:616601bde9fb	1307	vjcomp, cidcomp, maxcid));
AdamGreen	0:616601bde9fb	1308	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen	0:616601bde9fb	1309	LWIP_UNUSED_ARG(pd);
AdamGreen	0:616601bde9fb	1310	LWIP_UNUSED_ARG(vjcomp);
AdamGreen	0:616601bde9fb	1311	LWIP_UNUSED_ARG(cidcomp);
AdamGreen	0:616601bde9fb	1312	LWIP_UNUSED_ARG(maxcid);
AdamGreen	0:616601bde9fb	1313	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen	0:616601bde9fb	1314
AdamGreen	0:616601bde9fb	1315	return 0;
AdamGreen	0:616601bde9fb	1316	}
AdamGreen	0:616601bde9fb	1317
AdamGreen	0:616601bde9fb	1318	/*
AdamGreen	0:616601bde9fb	1319	* pppifNetifInit - netif init callback
AdamGreen	0:616601bde9fb	1320	*/
AdamGreen	0:616601bde9fb	1321	static err_t
AdamGreen	0:616601bde9fb	1322	pppifNetifInit(struct netif *netif)
AdamGreen	0:616601bde9fb	1323	{
AdamGreen	0:616601bde9fb	1324	netif->name[0] = 'p';
AdamGreen	0:616601bde9fb	1325	netif->name[1] = 'p';
AdamGreen	0:616601bde9fb	1326	netif->output = pppifOutput;
AdamGreen	0:616601bde9fb	1327	netif->mtu = pppMTU((int)(size_t)netif->state);
AdamGreen	0:616601bde9fb	1328	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
AdamGreen	0:616601bde9fb	1329	#if LWIP_NETIF_HOSTNAME
AdamGreen	0:616601bde9fb	1330	/* @todo: Initialize interface hostname */
AdamGreen	0:616601bde9fb	1331	/* netif_set_hostname(netif, "lwip"); */
AdamGreen	0:616601bde9fb	1332	#endif /* LWIP_NETIF_HOSTNAME */
AdamGreen	0:616601bde9fb	1333	return ERR_OK;
AdamGreen	0:616601bde9fb	1334	}
AdamGreen	0:616601bde9fb	1335
AdamGreen	0:616601bde9fb	1336
AdamGreen	0:616601bde9fb	1337	/*
AdamGreen	0:616601bde9fb	1338	* sifup - Config the interface up and enable IP packets to pass.
AdamGreen	0:616601bde9fb	1339	*/
AdamGreen	0:616601bde9fb	1340	int
AdamGreen	0:616601bde9fb	1341	sifup(int pd)
AdamGreen	0:616601bde9fb	1342	{
AdamGreen	0:616601bde9fb	1343	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	1344	int st = 1;
AdamGreen	0:616601bde9fb	1345
AdamGreen	0:616601bde9fb	1346	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
AdamGreen	0:616601bde9fb	1347	st = 0;
AdamGreen	0:616601bde9fb	1348	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
AdamGreen	0:616601bde9fb	1349	} else {
AdamGreen	0:616601bde9fb	1350	netif_remove(&pc->netif);
AdamGreen	0:616601bde9fb	1351	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
AdamGreen	0:616601bde9fb	1352	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
AdamGreen	0:616601bde9fb	1353	netif_set_up(&pc->netif);
AdamGreen	0:616601bde9fb	1354	pc->if_up = 1;
AdamGreen	0:616601bde9fb	1355	pc->errCode = PPPERR_NONE;
AdamGreen	0:616601bde9fb	1356
AdamGreen	0:616601bde9fb	1357	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
AdamGreen	0:616601bde9fb	1358	if (pc->linkStatusCB) {
AdamGreen	0:616601bde9fb	1359	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
AdamGreen	0:616601bde9fb	1360	}
AdamGreen	0:616601bde9fb	1361	} else {
AdamGreen	0:616601bde9fb	1362	st = 0;
AdamGreen	0:616601bde9fb	1363	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
AdamGreen	0:616601bde9fb	1364	}
AdamGreen	0:616601bde9fb	1365	}
AdamGreen	0:616601bde9fb	1366
AdamGreen	0:616601bde9fb	1367	return st;
AdamGreen	0:616601bde9fb	1368	}
AdamGreen	0:616601bde9fb	1369
AdamGreen	0:616601bde9fb	1370	/*
AdamGreen	0:616601bde9fb	1371	* sifnpmode - Set the mode for handling packets for a given NP.
AdamGreen	0:616601bde9fb	1372	*/
AdamGreen	0:616601bde9fb	1373	int
AdamGreen	0:616601bde9fb	1374	sifnpmode(int u, int proto, enum NPmode mode)
AdamGreen	0:616601bde9fb	1375	{
AdamGreen	0:616601bde9fb	1376	LWIP_UNUSED_ARG(u);
AdamGreen	0:616601bde9fb	1377	LWIP_UNUSED_ARG(proto);
AdamGreen	0:616601bde9fb	1378	LWIP_UNUSED_ARG(mode);
AdamGreen	0:616601bde9fb	1379	return 0;
AdamGreen	0:616601bde9fb	1380	}
AdamGreen	0:616601bde9fb	1381
AdamGreen	0:616601bde9fb	1382	/*
AdamGreen	0:616601bde9fb	1383	* sifdown - Config the interface down and disable IP.
AdamGreen	0:616601bde9fb	1384	*/
AdamGreen	0:616601bde9fb	1385	int
AdamGreen	0:616601bde9fb	1386	sifdown(int pd)
AdamGreen	0:616601bde9fb	1387	{
AdamGreen	0:616601bde9fb	1388	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	1389	int st = 1;
AdamGreen	0:616601bde9fb	1390
AdamGreen	0:616601bde9fb	1391	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
AdamGreen	0:616601bde9fb	1392	st = 0;
AdamGreen	0:616601bde9fb	1393	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
AdamGreen	0:616601bde9fb	1394	} else {
AdamGreen	0:616601bde9fb	1395	pc->if_up = 0;
AdamGreen	0:616601bde9fb	1396	/* make sure the netif status callback is called */
AdamGreen	0:616601bde9fb	1397	netif_set_down(&pc->netif);
AdamGreen	0:616601bde9fb	1398	netif_remove(&pc->netif);
AdamGreen	0:616601bde9fb	1399	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
AdamGreen	0:616601bde9fb	1400	if (pc->linkStatusCB) {
AdamGreen	0:616601bde9fb	1401	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
AdamGreen	0:616601bde9fb	1402	}
AdamGreen	0:616601bde9fb	1403	}
AdamGreen	0:616601bde9fb	1404	return st;
AdamGreen	0:616601bde9fb	1405	}
AdamGreen	0:616601bde9fb	1406
AdamGreen	0:616601bde9fb	1407	/**
AdamGreen	0:616601bde9fb	1408	* sifaddr - Config the interface IP addresses and netmask.
AdamGreen	0:616601bde9fb	1409	* @param pd Interface unit ???
AdamGreen	0:616601bde9fb	1410	* @param o Our IP address ???
AdamGreen	0:616601bde9fb	1411	* @param h His IP address ???
AdamGreen	0:616601bde9fb	1412	* @param m IP subnet mask ???
AdamGreen	0:616601bde9fb	1413	* @param ns1 Primary DNS
AdamGreen	0:616601bde9fb	1414	* @param ns2 Secondary DNS
AdamGreen	0:616601bde9fb	1415	*/
AdamGreen	0:616601bde9fb	1416	int
AdamGreen	0:616601bde9fb	1417	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
AdamGreen	0:616601bde9fb	1418	{
AdamGreen	0:616601bde9fb	1419	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	1420	int st = 1;
AdamGreen	0:616601bde9fb	1421
AdamGreen	0:616601bde9fb	1422	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
AdamGreen	0:616601bde9fb	1423	st = 0;
AdamGreen	0:616601bde9fb	1424	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
AdamGreen	0:616601bde9fb	1425	} else {
AdamGreen	0:616601bde9fb	1426	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
AdamGreen	0:616601bde9fb	1427	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
AdamGreen	0:616601bde9fb	1428	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
AdamGreen	0:616601bde9fb	1429	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
AdamGreen	0:616601bde9fb	1430	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
AdamGreen	0:616601bde9fb	1431	}
AdamGreen	0:616601bde9fb	1432	return st;
AdamGreen	0:616601bde9fb	1433	}
AdamGreen	0:616601bde9fb	1434
AdamGreen	0:616601bde9fb	1435	/**
AdamGreen	0:616601bde9fb	1436	* cifaddr - Clear the interface IP addresses, and delete routes
AdamGreen	0:616601bde9fb	1437	* through the interface if possible.
AdamGreen	0:616601bde9fb	1438	* @param pd Interface unit ???
AdamGreen	0:616601bde9fb	1439	* @param o Our IP address ???
AdamGreen	0:616601bde9fb	1440	* @param h IP broadcast address ???
AdamGreen	0:616601bde9fb	1441	*/
AdamGreen	0:616601bde9fb	1442	int
AdamGreen	0:616601bde9fb	1443	cifaddr( int pd, u32_t o, u32_t h)
AdamGreen	0:616601bde9fb	1444	{
AdamGreen	0:616601bde9fb	1445	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	1446	int st = 1;
AdamGreen	0:616601bde9fb	1447
AdamGreen	0:616601bde9fb	1448	LWIP_UNUSED_ARG(o);
AdamGreen	0:616601bde9fb	1449	LWIP_UNUSED_ARG(h);
AdamGreen	0:616601bde9fb	1450	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
AdamGreen	0:616601bde9fb	1451	st = 0;
AdamGreen	0:616601bde9fb	1452	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
AdamGreen	0:616601bde9fb	1453	} else {
AdamGreen	0:616601bde9fb	1454	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
AdamGreen	0:616601bde9fb	1455	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
AdamGreen	0:616601bde9fb	1456	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
AdamGreen	0:616601bde9fb	1457	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
AdamGreen	0:616601bde9fb	1458	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
AdamGreen	0:616601bde9fb	1459	}
AdamGreen	0:616601bde9fb	1460	return st;
AdamGreen	0:616601bde9fb	1461	}
AdamGreen	0:616601bde9fb	1462
AdamGreen	0:616601bde9fb	1463	/*
AdamGreen	0:616601bde9fb	1464	* sifdefaultroute - assign a default route through the address given.
AdamGreen	0:616601bde9fb	1465	*/
AdamGreen	0:616601bde9fb	1466	int
AdamGreen	0:616601bde9fb	1467	sifdefaultroute(int pd, u32_t l, u32_t g)
AdamGreen	0:616601bde9fb	1468	{
AdamGreen	0:616601bde9fb	1469	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	1470	int st = 1;
AdamGreen	0:616601bde9fb	1471
AdamGreen	0:616601bde9fb	1472	LWIP_UNUSED_ARG(l);
AdamGreen	0:616601bde9fb	1473	LWIP_UNUSED_ARG(g);
AdamGreen	0:616601bde9fb	1474
AdamGreen	0:616601bde9fb	1475	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
AdamGreen	0:616601bde9fb	1476	st = 0;
AdamGreen	0:616601bde9fb	1477	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
AdamGreen	0:616601bde9fb	1478	} else {
AdamGreen	0:616601bde9fb	1479	netif_set_default(&pc->netif);
AdamGreen	0:616601bde9fb	1480	}
AdamGreen	0:616601bde9fb	1481
AdamGreen	0:616601bde9fb	1482	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
AdamGreen	0:616601bde9fb	1483
AdamGreen	0:616601bde9fb	1484	return st;
AdamGreen	0:616601bde9fb	1485	}
AdamGreen	0:616601bde9fb	1486
AdamGreen	0:616601bde9fb	1487	/*
AdamGreen	0:616601bde9fb	1488	* cifdefaultroute - delete a default route through the address given.
AdamGreen	0:616601bde9fb	1489	*/
AdamGreen	0:616601bde9fb	1490	int
AdamGreen	0:616601bde9fb	1491	cifdefaultroute(int pd, u32_t l, u32_t g)
AdamGreen	0:616601bde9fb	1492	{
AdamGreen	0:616601bde9fb	1493	PPPControl *pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	1494	int st = 1;
AdamGreen	0:616601bde9fb	1495
AdamGreen	0:616601bde9fb	1496	LWIP_UNUSED_ARG(l);
AdamGreen	0:616601bde9fb	1497	LWIP_UNUSED_ARG(g);
AdamGreen	0:616601bde9fb	1498
AdamGreen	0:616601bde9fb	1499	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
AdamGreen	0:616601bde9fb	1500	st = 0;
AdamGreen	0:616601bde9fb	1501	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
AdamGreen	0:616601bde9fb	1502	} else {
AdamGreen	0:616601bde9fb	1503	netif_set_default(NULL);
AdamGreen	0:616601bde9fb	1504	}
AdamGreen	0:616601bde9fb	1505
AdamGreen	0:616601bde9fb	1506	return st;
AdamGreen	0:616601bde9fb	1507	}
AdamGreen	0:616601bde9fb	1508
AdamGreen	0:616601bde9fb	1509	/**********************************/
AdamGreen	0:616601bde9fb	1510	/* LOCAL FUNCTION DEFINITIONS */
AdamGreen	0:616601bde9fb	1511	/**********************************/
AdamGreen	0:616601bde9fb	1512
AdamGreen	0:616601bde9fb	1513	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
AdamGreen	0:616601bde9fb	1514	/* The main PPP process function. This implements the state machine according
AdamGreen	0:616601bde9fb	1515	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
AdamGreen	0:616601bde9fb	1516	static void
AdamGreen	0:616601bde9fb	1517	pppInputThread(void *arg)
AdamGreen	0:616601bde9fb	1518	{
AdamGreen	0:616601bde9fb	1519	int count;
AdamGreen	0:616601bde9fb	1520	PPPControlRx *pcrx = arg;
AdamGreen	0:616601bde9fb	1521
AdamGreen	0:616601bde9fb	1522	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
AdamGreen	0:616601bde9fb	1523	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
AdamGreen	0:616601bde9fb	1524	if(count > 0) {
AdamGreen	0:616601bde9fb	1525	pppInProc(pcrx, pcrx->rxbuf, count);
AdamGreen	0:616601bde9fb	1526	} else {
AdamGreen	0:616601bde9fb	1527	/* nothing received, give other tasks a chance to run */
AdamGreen	0:616601bde9fb	1528	sys_msleep(1);
AdamGreen	0:616601bde9fb	1529	}
AdamGreen	0:616601bde9fb	1530	}
AdamGreen	0:616601bde9fb	1531	}
AdamGreen	0:616601bde9fb	1532	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
AdamGreen	0:616601bde9fb	1533
AdamGreen	0:616601bde9fb	1534	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	1535
AdamGreen	0:616601bde9fb	1536	void
AdamGreen	0:616601bde9fb	1537	pppOverEthernetInitFailed(int pd)
AdamGreen	0:616601bde9fb	1538	{
AdamGreen	0:616601bde9fb	1539	PPPControl* pc;
AdamGreen	0:616601bde9fb	1540
AdamGreen	0:616601bde9fb	1541	pppHup(pd);
AdamGreen	0:616601bde9fb	1542	pppStop(pd);
AdamGreen	0:616601bde9fb	1543
AdamGreen	0:616601bde9fb	1544	pc = &pppControl[pd];
AdamGreen	0:616601bde9fb	1545	pppoe_destroy(&pc->netif);
AdamGreen	0:616601bde9fb	1546	pc->openFlag = 0;
AdamGreen	0:616601bde9fb	1547
AdamGreen	0:616601bde9fb	1548	if(pc->linkStatusCB) {
AdamGreen	0:616601bde9fb	1549	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
AdamGreen	0:616601bde9fb	1550	}
AdamGreen	0:616601bde9fb	1551	}
AdamGreen	0:616601bde9fb	1552
AdamGreen	0:616601bde9fb	1553	static void
AdamGreen	0:616601bde9fb	1554	pppOverEthernetLinkStatusCB(int pd, int up)
AdamGreen	0:616601bde9fb	1555	{
AdamGreen	0:616601bde9fb	1556	if(up) {
AdamGreen	0:616601bde9fb	1557	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
AdamGreen	0:616601bde9fb	1558	pppStart(pd);
AdamGreen	0:616601bde9fb	1559	} else {
AdamGreen	0:616601bde9fb	1560	pppOverEthernetInitFailed(pd);
AdamGreen	0:616601bde9fb	1561	}
AdamGreen	0:616601bde9fb	1562	}
AdamGreen	0:616601bde9fb	1563	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	1564
AdamGreen	0:616601bde9fb	1565	struct pbuf *
AdamGreen	0:616601bde9fb	1566	pppSingleBuf(struct pbuf *p)
AdamGreen	0:616601bde9fb	1567	{
AdamGreen	0:616601bde9fb	1568	struct pbuf q, b;
AdamGreen	0:616601bde9fb	1569	u_char *pl;
AdamGreen	0:616601bde9fb	1570
AdamGreen	0:616601bde9fb	1571	if(p->tot_len == p->len) {
AdamGreen	0:616601bde9fb	1572	return p;
AdamGreen	0:616601bde9fb	1573	}
AdamGreen	0:616601bde9fb	1574
AdamGreen	0:616601bde9fb	1575	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
AdamGreen	0:616601bde9fb	1576	if(!q) {
AdamGreen	0:616601bde9fb	1577	PPPDEBUG(LOG_ERR,
AdamGreen	0:616601bde9fb	1578	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
AdamGreen	0:616601bde9fb	1579	return p; /* live dangerously */
AdamGreen	0:616601bde9fb	1580	}
AdamGreen	0:616601bde9fb	1581
AdamGreen	0:616601bde9fb	1582	for(b = p, pl = (u_char *) q->payload; b != NULL; b = b->next) {
AdamGreen	0:616601bde9fb	1583	MEMCPY(pl, b->payload, b->len);
AdamGreen	0:616601bde9fb	1584	pl += b->len;
AdamGreen	0:616601bde9fb	1585	}
AdamGreen	0:616601bde9fb	1586
AdamGreen	0:616601bde9fb	1587	pbuf_free(p);
AdamGreen	0:616601bde9fb	1588
AdamGreen	0:616601bde9fb	1589	return q;
AdamGreen	0:616601bde9fb	1590	}
AdamGreen	0:616601bde9fb	1591
AdamGreen	0:616601bde9fb	1592	struct pppInputHeader {
AdamGreen	0:616601bde9fb	1593	int unit;
AdamGreen	0:616601bde9fb	1594	u16_t proto;
AdamGreen	0:616601bde9fb	1595	};
AdamGreen	0:616601bde9fb	1596
AdamGreen	0:616601bde9fb	1597	/*
AdamGreen	0:616601bde9fb	1598	* Pass the processed input packet to the appropriate handler.
AdamGreen	0:616601bde9fb	1599	* This function and all handlers run in the context of the tcpip_thread
AdamGreen	0:616601bde9fb	1600	*/
AdamGreen	0:616601bde9fb	1601	static void
AdamGreen	0:616601bde9fb	1602	pppInput(void *arg)
AdamGreen	0:616601bde9fb	1603	{
AdamGreen	0:616601bde9fb	1604	struct pbuf nb = (struct pbuf )arg;
AdamGreen	0:616601bde9fb	1605	u16_t protocol;
AdamGreen	0:616601bde9fb	1606	int pd;
AdamGreen	0:616601bde9fb	1607
AdamGreen	0:616601bde9fb	1608	pd = ((struct pppInputHeader *)nb->payload)->unit;
AdamGreen	0:616601bde9fb	1609	protocol = ((struct pppInputHeader *)nb->payload)->proto;
AdamGreen	0:616601bde9fb	1610
AdamGreen	0:616601bde9fb	1611	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
AdamGreen	0:616601bde9fb	1612	LWIP_ASSERT("pbuf_header failed\n", 0);
AdamGreen	0:616601bde9fb	1613	goto drop;
AdamGreen	0:616601bde9fb	1614	}
AdamGreen	0:616601bde9fb	1615
AdamGreen	0:616601bde9fb	1616	LINK_STATS_INC(link.recv);
AdamGreen	0:616601bde9fb	1617	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
AdamGreen	0:616601bde9fb	1618	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
AdamGreen	0:616601bde9fb	1619
AdamGreen	0:616601bde9fb	1620	/*
AdamGreen	0:616601bde9fb	1621	* Toss all non-LCP packets unless LCP is OPEN.
AdamGreen	0:616601bde9fb	1622	* Until we get past the authentication phase, toss all packets
AdamGreen	0:616601bde9fb	1623	* except LCP, LQR and authentication packets.
AdamGreen	0:616601bde9fb	1624	*/
AdamGreen	0:616601bde9fb	1625	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
AdamGreen	0:616601bde9fb	1626	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
AdamGreen	0:616601bde9fb	1627	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
AdamGreen	0:616601bde9fb	1628	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
AdamGreen	0:616601bde9fb	1629	goto drop;
AdamGreen	0:616601bde9fb	1630	}
AdamGreen	0:616601bde9fb	1631	}
AdamGreen	0:616601bde9fb	1632
AdamGreen	0:616601bde9fb	1633	switch(protocol) {
AdamGreen	0:616601bde9fb	1634	case PPP_VJC_COMP: /* VJ compressed TCP */
AdamGreen	0:616601bde9fb	1635	#if PPPOS_SUPPORT && VJ_SUPPORT
AdamGreen	0:616601bde9fb	1636	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
AdamGreen	0:616601bde9fb	1637	/*
AdamGreen	0:616601bde9fb	1638	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
AdamGreen	0:616601bde9fb	1639	* pass the result to IP.
AdamGreen	0:616601bde9fb	1640	*/
AdamGreen	0:616601bde9fb	1641	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
AdamGreen	0:616601bde9fb	1642	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
AdamGreen	0:616601bde9fb	1643	return;
AdamGreen	0:616601bde9fb	1644	}
AdamGreen	0:616601bde9fb	1645	/* Something's wrong so drop it. */
AdamGreen	0:616601bde9fb	1646	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
AdamGreen	0:616601bde9fb	1647	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen	0:616601bde9fb	1648	/* No handler for this protocol so drop the packet. */
AdamGreen	0:616601bde9fb	1649	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
AdamGreen	0:616601bde9fb	1650	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen	0:616601bde9fb	1651	break;
AdamGreen	0:616601bde9fb	1652
AdamGreen	0:616601bde9fb	1653	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
AdamGreen	0:616601bde9fb	1654	#if PPPOS_SUPPORT && VJ_SUPPORT
AdamGreen	0:616601bde9fb	1655	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
AdamGreen	0:616601bde9fb	1656	/*
AdamGreen	0:616601bde9fb	1657	* Process the TCP/IP header for VJ header compression and then pass
AdamGreen	0:616601bde9fb	1658	* the packet to IP.
AdamGreen	0:616601bde9fb	1659	*/
AdamGreen	0:616601bde9fb	1660	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
AdamGreen	0:616601bde9fb	1661	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
AdamGreen	0:616601bde9fb	1662	return;
AdamGreen	0:616601bde9fb	1663	}
AdamGreen	0:616601bde9fb	1664	/* Something's wrong so drop it. */
AdamGreen	0:616601bde9fb	1665	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
AdamGreen	0:616601bde9fb	1666	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen	0:616601bde9fb	1667	/* No handler for this protocol so drop the packet. */
AdamGreen	0:616601bde9fb	1668	PPPDEBUG(LOG_INFO,
AdamGreen	0:616601bde9fb	1669	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
AdamGreen	0:616601bde9fb	1670	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
AdamGreen	0:616601bde9fb	1671	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen	0:616601bde9fb	1672	break;
AdamGreen	0:616601bde9fb	1673
AdamGreen	0:616601bde9fb	1674	case PPP_IP: /* Internet Protocol */
AdamGreen	0:616601bde9fb	1675	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
AdamGreen	0:616601bde9fb	1676	if (pppControl[pd].netif.input) {
AdamGreen	0:616601bde9fb	1677	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
AdamGreen	0:616601bde9fb	1678	return;
AdamGreen	0:616601bde9fb	1679	}
AdamGreen	0:616601bde9fb	1680	break;
AdamGreen	0:616601bde9fb	1681
AdamGreen	0:616601bde9fb	1682	default: {
AdamGreen	0:616601bde9fb	1683	struct protent *protp;
AdamGreen	0:616601bde9fb	1684	int i;
AdamGreen	0:616601bde9fb	1685
AdamGreen	0:616601bde9fb	1686	/*
AdamGreen	0:616601bde9fb	1687	* Upcall the proper protocol input routine.
AdamGreen	0:616601bde9fb	1688	*/
AdamGreen	0:616601bde9fb	1689	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
AdamGreen	0:616601bde9fb	1690	if (protp->protocol == protocol && protp->enabled_flag) {
AdamGreen	0:616601bde9fb	1691	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
AdamGreen	0:616601bde9fb	1692	nb = pppSingleBuf(nb);
AdamGreen	0:616601bde9fb	1693	(protp->input)(pd, (u_char )nb->payload, nb->len);
AdamGreen	0:616601bde9fb	1694	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
AdamGreen	0:616601bde9fb	1695	goto out;
AdamGreen	0:616601bde9fb	1696	}
AdamGreen	0:616601bde9fb	1697	}
AdamGreen	0:616601bde9fb	1698
AdamGreen	0:616601bde9fb	1699	/* No handler for this protocol so reject the packet. */
AdamGreen	0:616601bde9fb	1700	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
AdamGreen	0:616601bde9fb	1701	if (pbuf_header(nb, sizeof(protocol))) {
AdamGreen	0:616601bde9fb	1702	LWIP_ASSERT("pbuf_header failed\n", 0);
AdamGreen	0:616601bde9fb	1703	goto drop;
AdamGreen	0:616601bde9fb	1704	}
AdamGreen	0:616601bde9fb	1705	#if BYTE_ORDER == LITTLE_ENDIAN
AdamGreen	0:616601bde9fb	1706	protocol = htons(protocol);
AdamGreen	0:616601bde9fb	1707	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
AdamGreen	0:616601bde9fb	1708	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
AdamGreen	0:616601bde9fb	1709	lcp_sprotrej(pd, (u_char *)nb->payload, nb->len);
AdamGreen	0:616601bde9fb	1710	}
AdamGreen	0:616601bde9fb	1711	break;
AdamGreen	0:616601bde9fb	1712	}
AdamGreen	0:616601bde9fb	1713
AdamGreen	0:616601bde9fb	1714	drop:
AdamGreen	0:616601bde9fb	1715	LINK_STATS_INC(link.drop);
AdamGreen	0:616601bde9fb	1716	snmp_inc_ifindiscards(&pppControl[pd].netif);
AdamGreen	0:616601bde9fb	1717
AdamGreen	0:616601bde9fb	1718	out:
AdamGreen	0:616601bde9fb	1719	pbuf_free(nb);
AdamGreen	0:616601bde9fb	1720	return;
AdamGreen	0:616601bde9fb	1721	}
AdamGreen	0:616601bde9fb	1722
AdamGreen	0:616601bde9fb	1723	#if PPPOS_SUPPORT
AdamGreen	0:616601bde9fb	1724	/*
AdamGreen	0:616601bde9fb	1725	* Drop the input packet.
AdamGreen	0:616601bde9fb	1726	*/
AdamGreen	0:616601bde9fb	1727	static void
AdamGreen	0:616601bde9fb	1728	pppDrop(PPPControlRx *pcrx)
AdamGreen	0:616601bde9fb	1729	{
AdamGreen	0:616601bde9fb	1730	if (pcrx->inHead != NULL) {
AdamGreen	0:616601bde9fb	1731	#if 0
AdamGreen	0:616601bde9fb	1732	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
AdamGreen	0:616601bde9fb	1733	#endif
AdamGreen	0:616601bde9fb	1734	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
AdamGreen	0:616601bde9fb	1735	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
AdamGreen	0:616601bde9fb	1736	pbuf_free(pcrx->inTail);
AdamGreen	0:616601bde9fb	1737	}
AdamGreen	0:616601bde9fb	1738	pbuf_free(pcrx->inHead);
AdamGreen	0:616601bde9fb	1739	pcrx->inHead = NULL;
AdamGreen	0:616601bde9fb	1740	pcrx->inTail = NULL;
AdamGreen	0:616601bde9fb	1741	}
AdamGreen	0:616601bde9fb	1742	#if VJ_SUPPORT
AdamGreen	0:616601bde9fb	1743	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
AdamGreen	0:616601bde9fb	1744	#endif /* VJ_SUPPORT */
AdamGreen	0:616601bde9fb	1745
AdamGreen	0:616601bde9fb	1746	LINK_STATS_INC(link.drop);
AdamGreen	0:616601bde9fb	1747	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
AdamGreen	0:616601bde9fb	1748	}
AdamGreen	0:616601bde9fb	1749
AdamGreen	0:616601bde9fb	1750	/** Pass received raw characters to PPPoS to be decoded. This function is
AdamGreen	0:616601bde9fb	1751	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
AdamGreen	0:616601bde9fb	1752	*
AdamGreen	0:616601bde9fb	1753	* @param pd PPP descriptor index, returned by pppOpen()
AdamGreen	0:616601bde9fb	1754	* @param data received data
AdamGreen	0:616601bde9fb	1755	* @param len length of received data
AdamGreen	0:616601bde9fb	1756	*/
AdamGreen	0:616601bde9fb	1757	void
AdamGreen	0:616601bde9fb	1758	pppos_input(int pd, u_char* data, int len)
AdamGreen	0:616601bde9fb	1759	{
AdamGreen	0:616601bde9fb	1760	pppInProc(&pppControl[pd].rx, data, len);
AdamGreen	0:616601bde9fb	1761	}
AdamGreen	0:616601bde9fb	1762
AdamGreen	0:616601bde9fb	1763	/**
AdamGreen	0:616601bde9fb	1764	* Process a received octet string.
AdamGreen	0:616601bde9fb	1765	*/
AdamGreen	0:616601bde9fb	1766	static void
AdamGreen	0:616601bde9fb	1767	pppInProc(PPPControlRx pcrx, u_char s, int l)
AdamGreen	0:616601bde9fb	1768	{
AdamGreen	0:616601bde9fb	1769	struct pbuf *nextNBuf;
AdamGreen	0:616601bde9fb	1770	u_char curChar;
AdamGreen	0:616601bde9fb	1771	u_char escaped;
AdamGreen	0:616601bde9fb	1772	SYS_ARCH_DECL_PROTECT(lev);
AdamGreen	0:616601bde9fb	1773
AdamGreen	0:616601bde9fb	1774	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
AdamGreen	0:616601bde9fb	1775	while (l-- > 0) {
AdamGreen	0:616601bde9fb	1776	curChar = *s++;
AdamGreen	0:616601bde9fb	1777
AdamGreen	0:616601bde9fb	1778	SYS_ARCH_PROTECT(lev);
AdamGreen	0:616601bde9fb	1779	escaped = ESCAPE_P(pcrx->inACCM, curChar);
AdamGreen	0:616601bde9fb	1780	SYS_ARCH_UNPROTECT(lev);
AdamGreen	0:616601bde9fb	1781	/* Handle special characters. */
AdamGreen	0:616601bde9fb	1782	if (escaped) {
AdamGreen	0:616601bde9fb	1783	/* Check for escape sequences. */
AdamGreen	0:616601bde9fb	1784	/* XXX Note that this does not handle an escaped 0x5d character which
AdamGreen	0:616601bde9fb	1785	* would appear as an escape character. Since this is an ASCII ']'
AdamGreen	0:616601bde9fb	1786	* and there is no reason that I know of to escape it, I won't complicate
AdamGreen	0:616601bde9fb	1787	* the code to handle this case. GLL */
AdamGreen	0:616601bde9fb	1788	if (curChar == PPP_ESCAPE) {
AdamGreen	0:616601bde9fb	1789	pcrx->inEscaped = 1;
AdamGreen	0:616601bde9fb	1790	/* Check for the flag character. */
AdamGreen	0:616601bde9fb	1791	} else if (curChar == PPP_FLAG) {
AdamGreen	0:616601bde9fb	1792	/* If this is just an extra flag character, ignore it. */
AdamGreen	0:616601bde9fb	1793	if (pcrx->inState <= PDADDRESS) {
AdamGreen	0:616601bde9fb	1794	/* ignore it */;
AdamGreen	0:616601bde9fb	1795	/* If we haven't received the packet header, drop what has come in. */
AdamGreen	0:616601bde9fb	1796	} else if (pcrx->inState < PDDATA) {
AdamGreen	0:616601bde9fb	1797	PPPDEBUG(LOG_WARNING,
AdamGreen	0:616601bde9fb	1798	("pppInProc[%d]: Dropping incomplete packet %d\n",
AdamGreen	0:616601bde9fb	1799	pcrx->pd, pcrx->inState));
AdamGreen	0:616601bde9fb	1800	LINK_STATS_INC(link.lenerr);
AdamGreen	0:616601bde9fb	1801	pppDrop(pcrx);
AdamGreen	0:616601bde9fb	1802	/* If the fcs is invalid, drop the packet. */
AdamGreen	0:616601bde9fb	1803	} else if (pcrx->inFCS != PPP_GOODFCS) {
AdamGreen	0:616601bde9fb	1804	PPPDEBUG(LOG_INFO,
AdamGreen	0:616601bde9fb	1805	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
AdamGreen	0:616601bde9fb	1806	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
AdamGreen	0:616601bde9fb	1807	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
AdamGreen	0:616601bde9fb	1808	LINK_STATS_INC(link.chkerr);
AdamGreen	0:616601bde9fb	1809	pppDrop(pcrx);
AdamGreen	0:616601bde9fb	1810	/* Otherwise it's a good packet so pass it on. */
AdamGreen	0:616601bde9fb	1811	} else {
AdamGreen	0:616601bde9fb	1812	/* Trim off the checksum. */
AdamGreen	0:616601bde9fb	1813	if(pcrx->inTail->len >= 2) {
AdamGreen	0:616601bde9fb	1814	pcrx->inTail->len -= 2;
AdamGreen	0:616601bde9fb	1815
AdamGreen	0:616601bde9fb	1816	pcrx->inTail->tot_len = pcrx->inTail->len;
AdamGreen	0:616601bde9fb	1817	if (pcrx->inTail != pcrx->inHead) {
AdamGreen	0:616601bde9fb	1818	pbuf_cat(pcrx->inHead, pcrx->inTail);
AdamGreen	0:616601bde9fb	1819	}
AdamGreen	0:616601bde9fb	1820	} else {
AdamGreen	0:616601bde9fb	1821	pcrx->inTail->tot_len = pcrx->inTail->len;
AdamGreen	0:616601bde9fb	1822	if (pcrx->inTail != pcrx->inHead) {
AdamGreen	0:616601bde9fb	1823	pbuf_cat(pcrx->inHead, pcrx->inTail);
AdamGreen	0:616601bde9fb	1824	}
AdamGreen	0:616601bde9fb	1825
AdamGreen	0:616601bde9fb	1826	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
AdamGreen	0:616601bde9fb	1827	}
AdamGreen	0:616601bde9fb	1828
AdamGreen	0:616601bde9fb	1829	/* Dispatch the packet thereby consuming it. */
AdamGreen	0:616601bde9fb	1830	#if PPP_INPROC_MULTITHREADED
AdamGreen	0:616601bde9fb	1831	if(tcpip_callback_with_block(pppInput, pcrx->inHead, 0) != ERR_OK) {
AdamGreen	0:616601bde9fb	1832	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
AdamGreen	0:616601bde9fb	1833	pbuf_free(pcrx->inHead);
AdamGreen	0:616601bde9fb	1834	LINK_STATS_INC(link.drop);
AdamGreen	0:616601bde9fb	1835	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
AdamGreen	0:616601bde9fb	1836	}
AdamGreen	0:616601bde9fb	1837	#else /* PPP_INPROC_MULTITHREADED */
AdamGreen	0:616601bde9fb	1838	pppInput(pcrx->inHead);
AdamGreen	0:616601bde9fb	1839	#endif /* PPP_INPROC_MULTITHREADED */
AdamGreen	0:616601bde9fb	1840	pcrx->inHead = NULL;
AdamGreen	0:616601bde9fb	1841	pcrx->inTail = NULL;
AdamGreen	0:616601bde9fb	1842	}
AdamGreen	0:616601bde9fb	1843
AdamGreen	0:616601bde9fb	1844	/* Prepare for a new packet. */
AdamGreen	0:616601bde9fb	1845	pcrx->inFCS = PPP_INITFCS;
AdamGreen	0:616601bde9fb	1846	pcrx->inState = PDADDRESS;
AdamGreen	0:616601bde9fb	1847	pcrx->inEscaped = 0;
AdamGreen	0:616601bde9fb	1848	/* Other characters are usually control characters that may have
AdamGreen	0:616601bde9fb	1849	* been inserted by the physical layer so here we just drop them. */
AdamGreen	0:616601bde9fb	1850	} else {
AdamGreen	0:616601bde9fb	1851	PPPDEBUG(LOG_WARNING,
AdamGreen	0:616601bde9fb	1852	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
AdamGreen	0:616601bde9fb	1853	}
AdamGreen	0:616601bde9fb	1854	/* Process other characters. */
AdamGreen	0:616601bde9fb	1855	} else {
AdamGreen	0:616601bde9fb	1856	/* Unencode escaped characters. */
AdamGreen	0:616601bde9fb	1857	if (pcrx->inEscaped) {
AdamGreen	0:616601bde9fb	1858	pcrx->inEscaped = 0;
AdamGreen	0:616601bde9fb	1859	curChar ^= PPP_TRANS;
AdamGreen	0:616601bde9fb	1860	}
AdamGreen	0:616601bde9fb	1861
AdamGreen	0:616601bde9fb	1862	/* Process character relative to current state. */
AdamGreen	0:616601bde9fb	1863	switch(pcrx->inState) {
AdamGreen	0:616601bde9fb	1864	case PDIDLE: /* Idle state - waiting. */
AdamGreen	0:616601bde9fb	1865	/* Drop the character if it's not 0xff
AdamGreen	0:616601bde9fb	1866	* we would have processed a flag character above. */
AdamGreen	0:616601bde9fb	1867	if (curChar != PPP_ALLSTATIONS) {
AdamGreen	0:616601bde9fb	1868	break;
AdamGreen	0:616601bde9fb	1869	}
AdamGreen	0:616601bde9fb	1870
AdamGreen	0:616601bde9fb	1871	/* Fall through */
AdamGreen	0:616601bde9fb	1872	case PDSTART: /* Process start flag. */
AdamGreen	0:616601bde9fb	1873	/* Prepare for a new packet. */
AdamGreen	0:616601bde9fb	1874	pcrx->inFCS = PPP_INITFCS;
AdamGreen	0:616601bde9fb	1875
AdamGreen	0:616601bde9fb	1876	/* Fall through */
AdamGreen	0:616601bde9fb	1877	case PDADDRESS: /* Process address field. */
AdamGreen	0:616601bde9fb	1878	if (curChar == PPP_ALLSTATIONS) {
AdamGreen	0:616601bde9fb	1879	pcrx->inState = PDCONTROL;
AdamGreen	0:616601bde9fb	1880	break;
AdamGreen	0:616601bde9fb	1881	}
AdamGreen	0:616601bde9fb	1882	/* Else assume compressed address and control fields so
AdamGreen	0:616601bde9fb	1883	* fall through to get the protocol... */
AdamGreen	0:616601bde9fb	1884	case PDCONTROL: /* Process control field. */
AdamGreen	0:616601bde9fb	1885	/* If we don't get a valid control code, restart. */
AdamGreen	0:616601bde9fb	1886	if (curChar == PPP_UI) {
AdamGreen	0:616601bde9fb	1887	pcrx->inState = PDPROTOCOL1;
AdamGreen	0:616601bde9fb	1888	break;
AdamGreen	0:616601bde9fb	1889	}
AdamGreen	0:616601bde9fb	1890	#if 0
AdamGreen	0:616601bde9fb	1891	else {
AdamGreen	0:616601bde9fb	1892	PPPDEBUG(LOG_WARNING,
AdamGreen	0:616601bde9fb	1893	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
AdamGreen	0:616601bde9fb	1894	pcrx->inState = PDSTART;
AdamGreen	0:616601bde9fb	1895	}
AdamGreen	0:616601bde9fb	1896	#endif
AdamGreen	0:616601bde9fb	1897	case PDPROTOCOL1: /* Process protocol field 1. */
AdamGreen	0:616601bde9fb	1898	/* If the lower bit is set, this is the end of the protocol
AdamGreen	0:616601bde9fb	1899	* field. */
AdamGreen	0:616601bde9fb	1900	if (curChar & 1) {
AdamGreen	0:616601bde9fb	1901	pcrx->inProtocol = curChar;
AdamGreen	0:616601bde9fb	1902	pcrx->inState = PDDATA;
AdamGreen	0:616601bde9fb	1903	} else {
AdamGreen	0:616601bde9fb	1904	pcrx->inProtocol = (u_int)curChar << 8;
AdamGreen	0:616601bde9fb	1905	pcrx->inState = PDPROTOCOL2;
AdamGreen	0:616601bde9fb	1906	}
AdamGreen	0:616601bde9fb	1907	break;
AdamGreen	0:616601bde9fb	1908	case PDPROTOCOL2: /* Process protocol field 2. */
AdamGreen	0:616601bde9fb	1909	pcrx->inProtocol \|= curChar;
AdamGreen	0:616601bde9fb	1910	pcrx->inState = PDDATA;
AdamGreen	0:616601bde9fb	1911	break;
AdamGreen	0:616601bde9fb	1912	case PDDATA: /* Process data byte. */
AdamGreen	0:616601bde9fb	1913	/* Make space to receive processed data. */
AdamGreen	0:616601bde9fb	1914	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
AdamGreen	0:616601bde9fb	1915	if(pcrx->inTail) {
AdamGreen	0:616601bde9fb	1916	pcrx->inTail->tot_len = pcrx->inTail->len;
AdamGreen	0:616601bde9fb	1917	if (pcrx->inTail != pcrx->inHead) {
AdamGreen	0:616601bde9fb	1918	pbuf_cat(pcrx->inHead, pcrx->inTail);
AdamGreen	0:616601bde9fb	1919	}
AdamGreen	0:616601bde9fb	1920	}
AdamGreen	0:616601bde9fb	1921	/* If we haven't started a packet, we need a packet header. */
AdamGreen	0:616601bde9fb	1922	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
AdamGreen	0:616601bde9fb	1923	if (nextNBuf == NULL) {
AdamGreen	0:616601bde9fb	1924	/* No free buffers. Drop the input packet and let the
AdamGreen	0:616601bde9fb	1925	* higher layers deal with it. Continue processing
AdamGreen	0:616601bde9fb	1926	* the received pbuf chain in case a new packet starts. */
AdamGreen	0:616601bde9fb	1927	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
AdamGreen	0:616601bde9fb	1928	LINK_STATS_INC(link.memerr);
AdamGreen	0:616601bde9fb	1929	pppDrop(pcrx);
AdamGreen	0:616601bde9fb	1930	pcrx->inState = PDSTART; /* Wait for flag sequence. */
AdamGreen	0:616601bde9fb	1931	break;
AdamGreen	0:616601bde9fb	1932	}
AdamGreen	0:616601bde9fb	1933	if (pcrx->inHead == NULL) {
AdamGreen	0:616601bde9fb	1934	struct pppInputHeader pih = (struct pppInputHeader )nextNBuf->payload;
AdamGreen	0:616601bde9fb	1935
AdamGreen	0:616601bde9fb	1936	pih->unit = pcrx->pd;
AdamGreen	0:616601bde9fb	1937	pih->proto = pcrx->inProtocol;
AdamGreen	0:616601bde9fb	1938
AdamGreen	0:616601bde9fb	1939	nextNBuf->len += sizeof(*pih);
AdamGreen	0:616601bde9fb	1940
AdamGreen	0:616601bde9fb	1941	pcrx->inHead = nextNBuf;
AdamGreen	0:616601bde9fb	1942	}
AdamGreen	0:616601bde9fb	1943	pcrx->inTail = nextNBuf;
AdamGreen	0:616601bde9fb	1944	}
AdamGreen	0:616601bde9fb	1945	/* Load character into buffer. */
AdamGreen	0:616601bde9fb	1946	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
AdamGreen	0:616601bde9fb	1947	break;
AdamGreen	0:616601bde9fb	1948	}
AdamGreen	0:616601bde9fb	1949
AdamGreen	0:616601bde9fb	1950	/* update the frame check sequence number. */
AdamGreen	0:616601bde9fb	1951	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
AdamGreen	0:616601bde9fb	1952	}
AdamGreen	0:616601bde9fb	1953	} /* while (l-- > 0), all bytes processed */
AdamGreen	0:616601bde9fb	1954
AdamGreen	0:616601bde9fb	1955	avRandomize();
AdamGreen	0:616601bde9fb	1956	}
AdamGreen	0:616601bde9fb	1957	#endif /* PPPOS_SUPPORT */
AdamGreen	0:616601bde9fb	1958
AdamGreen	0:616601bde9fb	1959	#if PPPOE_SUPPORT
AdamGreen	0:616601bde9fb	1960	void
AdamGreen	0:616601bde9fb	1961	pppInProcOverEthernet(int pd, struct pbuf *pb)
AdamGreen	0:616601bde9fb	1962	{
AdamGreen	0:616601bde9fb	1963	struct pppInputHeader *pih;
AdamGreen	0:616601bde9fb	1964	u16_t inProtocol;
AdamGreen	0:616601bde9fb	1965
AdamGreen	0:616601bde9fb	1966	if(pb->len < sizeof(inProtocol)) {
AdamGreen	0:616601bde9fb	1967	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
AdamGreen	0:616601bde9fb	1968	goto drop;
AdamGreen	0:616601bde9fb	1969	}
AdamGreen	0:616601bde9fb	1970
AdamGreen	0:616601bde9fb	1971	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
AdamGreen	0:616601bde9fb	1972
AdamGreen	0:616601bde9fb	1973	/* make room for pppInputHeader - should not fail */
AdamGreen	0:616601bde9fb	1974	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
AdamGreen	0:616601bde9fb	1975	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
AdamGreen	0:616601bde9fb	1976	goto drop;
AdamGreen	0:616601bde9fb	1977	}
AdamGreen	0:616601bde9fb	1978
AdamGreen	0:616601bde9fb	1979	pih = pb->payload;
AdamGreen	0:616601bde9fb	1980
AdamGreen	0:616601bde9fb	1981	pih->unit = pd;
AdamGreen	0:616601bde9fb	1982	pih->proto = inProtocol;
AdamGreen	0:616601bde9fb	1983
AdamGreen	0:616601bde9fb	1984	/* Dispatch the packet thereby consuming it. */
AdamGreen	0:616601bde9fb	1985	pppInput(pb);
AdamGreen	0:616601bde9fb	1986	return;
AdamGreen	0:616601bde9fb	1987
AdamGreen	0:616601bde9fb	1988	drop:
AdamGreen	0:616601bde9fb	1989	LINK_STATS_INC(link.drop);
AdamGreen	0:616601bde9fb	1990	snmp_inc_ifindiscards(&pppControl[pd].netif);
AdamGreen	0:616601bde9fb	1991	pbuf_free(pb);
AdamGreen	0:616601bde9fb	1992	return;
AdamGreen	0:616601bde9fb	1993	}
AdamGreen	0:616601bde9fb	1994	#endif /* PPPOE_SUPPORT */
AdamGreen	0:616601bde9fb	1995
AdamGreen	0:616601bde9fb	1996	#if LWIP_NETIF_STATUS_CALLBACK
AdamGreen	0:616601bde9fb	1997	/** Set the status callback of a PPP's netif
AdamGreen	0:616601bde9fb	1998	*
AdamGreen	0:616601bde9fb	1999	* @param pd The PPP descriptor returned by pppOpen()
AdamGreen	0:616601bde9fb	2000	* @param status_callback pointer to the status callback function
AdamGreen	0:616601bde9fb	2001	*
AdamGreen	0:616601bde9fb	2002	* @see netif_set_status_callback
AdamGreen	0:616601bde9fb	2003	*/
AdamGreen	0:616601bde9fb	2004	void
AdamGreen	0:616601bde9fb	2005	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
AdamGreen	0:616601bde9fb	2006	{
AdamGreen	0:616601bde9fb	2007	netif_set_status_callback(&pppControl[pd].netif, status_callback);
AdamGreen	0:616601bde9fb	2008	}
AdamGreen	0:616601bde9fb	2009	#endif /* LWIP_NETIF_STATUS_CALLBACK */
AdamGreen	0:616601bde9fb	2010
AdamGreen	0:616601bde9fb	2011	#if LWIP_NETIF_LINK_CALLBACK
AdamGreen	0:616601bde9fb	2012	/** Set the link callback of a PPP's netif
AdamGreen	0:616601bde9fb	2013	*
AdamGreen	0:616601bde9fb	2014	* @param pd The PPP descriptor returned by pppOpen()
AdamGreen	0:616601bde9fb	2015	* @param link_callback pointer to the link callback function
AdamGreen	0:616601bde9fb	2016	*
AdamGreen	0:616601bde9fb	2017	* @see netif_set_link_callback
AdamGreen	0:616601bde9fb	2018	*/
AdamGreen	0:616601bde9fb	2019	void
AdamGreen	0:616601bde9fb	2020	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
AdamGreen	0:616601bde9fb	2021	{
AdamGreen	0:616601bde9fb	2022	netif_set_link_callback(&pppControl[pd].netif, link_callback);
AdamGreen	0:616601bde9fb	2023	}
AdamGreen	0:616601bde9fb	2024	#endif /* LWIP_NETIF_LINK_CALLBACK */
AdamGreen	0:616601bde9fb	2025
AdamGreen	0:616601bde9fb	2026	#endif /* PPP_SUPPORT */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	23 Feb 2012
Imports:	113
Forks:	0
Commits:	2
Dependents:	0
Dependencies:	4
Followers:	6

NetStack/lwip/netif/ppp/ppp.c@0:616601bde9fb, 2012-02-23 (annotated)

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