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NetServicesProxy/lwip/netif/ppp/ppp.c@0:1619a6b826d7, 2011-11-21 (annotated)

Committer:: Hello1024
Date:: Mon Nov 21 18:25:34 2011 +0000
Revision:: 0:1619a6b826d7

Who changed what in which revision?

User	Revision	Line number	New contents of line
Hello1024	0:1619a6b826d7	1	/*****************************************************************************
Hello1024	0:1619a6b826d7	2	* ppp.c - Network Point to Point Protocol program file.
Hello1024	0:1619a6b826d7	3	*
Hello1024	0:1619a6b826d7	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
Hello1024	0:1619a6b826d7	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
Hello1024	0:1619a6b826d7	6	*
Hello1024	0:1619a6b826d7	7	* The authors hereby grant permission to use, copy, modify, distribute,
Hello1024	0:1619a6b826d7	8	* and license this software and its documentation for any purpose, provided
Hello1024	0:1619a6b826d7	9	* that existing copyright notices are retained in all copies and that this
Hello1024	0:1619a6b826d7	10	* notice and the following disclaimer are included verbatim in any
Hello1024	0:1619a6b826d7	11	* distributions. No written agreement, license, or royalty fee is required
Hello1024	0:1619a6b826d7	12	* for any of the authorized uses.
Hello1024	0:1619a6b826d7	13	*
Hello1024	0:1619a6b826d7	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
Hello1024	0:1619a6b826d7	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
Hello1024	0:1619a6b826d7	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
Hello1024	0:1619a6b826d7	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
Hello1024	0:1619a6b826d7	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
Hello1024	0:1619a6b826d7	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
Hello1024	0:1619a6b826d7	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
Hello1024	0:1619a6b826d7	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Hello1024	0:1619a6b826d7	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
Hello1024	0:1619a6b826d7	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Hello1024	0:1619a6b826d7	24	*
Hello1024	0:1619a6b826d7	25	******************************************************************************
Hello1024	0:1619a6b826d7	26	* REVISION HISTORY
Hello1024	0:1619a6b826d7	27	*
Hello1024	0:1619a6b826d7	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
Hello1024	0:1619a6b826d7	29	* Ported to lwIP.
Hello1024	0:1619a6b826d7	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
Hello1024	0:1619a6b826d7	31	* Original.
Hello1024	0:1619a6b826d7	32	*****************************************************************************/
Hello1024	0:1619a6b826d7	33
Hello1024	0:1619a6b826d7	34	/*
Hello1024	0:1619a6b826d7	35	* ppp_defs.h - PPP definitions.
Hello1024	0:1619a6b826d7	36	*
Hello1024	0:1619a6b826d7	37	* if_pppvar.h - private structures and declarations for PPP.
Hello1024	0:1619a6b826d7	38	*
Hello1024	0:1619a6b826d7	39	* Copyright (c) 1994 The Australian National University.
Hello1024	0:1619a6b826d7	40	* All rights reserved.
Hello1024	0:1619a6b826d7	41	*
Hello1024	0:1619a6b826d7	42	* Permission to use, copy, modify, and distribute this software and its
Hello1024	0:1619a6b826d7	43	* documentation is hereby granted, provided that the above copyright
Hello1024	0:1619a6b826d7	44	* notice appears in all copies. This software is provided without any
Hello1024	0:1619a6b826d7	45	* warranty, express or implied. The Australian National University
Hello1024	0:1619a6b826d7	46	* makes no representations about the suitability of this software for
Hello1024	0:1619a6b826d7	47	* any purpose.
Hello1024	0:1619a6b826d7	48	*
Hello1024	0:1619a6b826d7	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
Hello1024	0:1619a6b826d7	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
Hello1024	0:1619a6b826d7	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
Hello1024	0:1619a6b826d7	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
Hello1024	0:1619a6b826d7	53	* OF SUCH DAMAGE.
Hello1024	0:1619a6b826d7	54	*
Hello1024	0:1619a6b826d7	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
Hello1024	0:1619a6b826d7	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
Hello1024	0:1619a6b826d7	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
Hello1024	0:1619a6b826d7	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
Hello1024	0:1619a6b826d7	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
Hello1024	0:1619a6b826d7	60	* OR MODIFICATIONS.
Hello1024	0:1619a6b826d7	61	*/
Hello1024	0:1619a6b826d7	62
Hello1024	0:1619a6b826d7	63	/*
Hello1024	0:1619a6b826d7	64	* if_ppp.h - Point-to-Point Protocol definitions.
Hello1024	0:1619a6b826d7	65	*
Hello1024	0:1619a6b826d7	66	* Copyright (c) 1989 Carnegie Mellon University.
Hello1024	0:1619a6b826d7	67	* All rights reserved.
Hello1024	0:1619a6b826d7	68	*
Hello1024	0:1619a6b826d7	69	* Redistribution and use in source and binary forms are permitted
Hello1024	0:1619a6b826d7	70	* provided that the above copyright notice and this paragraph are
Hello1024	0:1619a6b826d7	71	* duplicated in all such forms and that any documentation,
Hello1024	0:1619a6b826d7	72	* advertising materials, and other materials related to such
Hello1024	0:1619a6b826d7	73	* distribution and use acknowledge that the software was developed
Hello1024	0:1619a6b826d7	74	* by Carnegie Mellon University. The name of the
Hello1024	0:1619a6b826d7	75	* University may not be used to endorse or promote products derived
Hello1024	0:1619a6b826d7	76	* from this software without specific prior written permission.
Hello1024	0:1619a6b826d7	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
Hello1024	0:1619a6b826d7	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
Hello1024	0:1619a6b826d7	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Hello1024	0:1619a6b826d7	80	*/
Hello1024	0:1619a6b826d7	81
Hello1024	0:1619a6b826d7	82	#include "lwip/opt.h"
Hello1024	0:1619a6b826d7	83
Hello1024	0:1619a6b826d7	84	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
Hello1024	0:1619a6b826d7	85
Hello1024	0:1619a6b826d7	86	#include "lwip/ip.h" /* for ip_input() */
Hello1024	0:1619a6b826d7	87
Hello1024	0:1619a6b826d7	88	#include "ppp.h"
Hello1024	0:1619a6b826d7	89	#include "pppdebug.h"
Hello1024	0:1619a6b826d7	90
Hello1024	0:1619a6b826d7	91	#include "randm.h"
Hello1024	0:1619a6b826d7	92	#include "fsm.h"
Hello1024	0:1619a6b826d7	93	#if PAP_SUPPORT
Hello1024	0:1619a6b826d7	94	#include "pap.h"
Hello1024	0:1619a6b826d7	95	#endif /* PAP_SUPPORT */
Hello1024	0:1619a6b826d7	96	#if CHAP_SUPPORT
Hello1024	0:1619a6b826d7	97	#include "chap.h"
Hello1024	0:1619a6b826d7	98	#endif /* CHAP_SUPPORT */
Hello1024	0:1619a6b826d7	99	#include "ipcp.h"
Hello1024	0:1619a6b826d7	100	#include "lcp.h"
Hello1024	0:1619a6b826d7	101	#include "magic.h"
Hello1024	0:1619a6b826d7	102	#include "auth.h"
Hello1024	0:1619a6b826d7	103	#if VJ_SUPPORT
Hello1024	0:1619a6b826d7	104	#include "vj.h"
Hello1024	0:1619a6b826d7	105	#endif /* VJ_SUPPORT */
Hello1024	0:1619a6b826d7	106	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	107	#include "netif/ppp_oe.h"
Hello1024	0:1619a6b826d7	108	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	109
Hello1024	0:1619a6b826d7	110	#include "lwip/tcpip.h"
Hello1024	0:1619a6b826d7	111	#include "lwip/api.h"
Hello1024	0:1619a6b826d7	112	#include "lwip/snmp.h"
Hello1024	0:1619a6b826d7	113
Hello1024	0:1619a6b826d7	114	#include <string.h>
Hello1024	0:1619a6b826d7	115
Hello1024	0:1619a6b826d7	116	/*************************/
Hello1024	0:1619a6b826d7	117	/* LOCAL DEFINITIONS */
Hello1024	0:1619a6b826d7	118	/*************************/
Hello1024	0:1619a6b826d7	119
Hello1024	0:1619a6b826d7	120	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
Hello1024	0:1619a6b826d7	121	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
Hello1024	0:1619a6b826d7	122	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
Hello1024	0:1619a6b826d7	123	*/
Hello1024	0:1619a6b826d7	124	#ifndef PPP_INPROC_MULTITHREADED
Hello1024	0:1619a6b826d7	125	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
Hello1024	0:1619a6b826d7	126	#endif
Hello1024	0:1619a6b826d7	127
Hello1024	0:1619a6b826d7	128	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
Hello1024	0:1619a6b826d7	129	* Default is 0: call pppos_input() for received raw characters, charcater
Hello1024	0:1619a6b826d7	130	* reception is up to the port */
Hello1024	0:1619a6b826d7	131	#ifndef PPP_INPROC_OWNTHREAD
Hello1024	0:1619a6b826d7	132	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
Hello1024	0:1619a6b826d7	133	#endif
Hello1024	0:1619a6b826d7	134
Hello1024	0:1619a6b826d7	135	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
Hello1024	0:1619a6b826d7	136	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
Hello1024	0:1619a6b826d7	137	#endif
Hello1024	0:1619a6b826d7	138
Hello1024	0:1619a6b826d7	139	/*
Hello1024	0:1619a6b826d7	140	* The basic PPP frame.
Hello1024	0:1619a6b826d7	141	*/
Hello1024	0:1619a6b826d7	142	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
Hello1024	0:1619a6b826d7	143	#define PPP_CONTROL(p) (((u_char *)(p))[1])
Hello1024	0:1619a6b826d7	144	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
Hello1024	0:1619a6b826d7	145
Hello1024	0:1619a6b826d7	146	/* PPP packet parser states. Current state indicates operation yet to be
Hello1024	0:1619a6b826d7	147	* completed. */
Hello1024	0:1619a6b826d7	148	typedef enum {
Hello1024	0:1619a6b826d7	149	PDIDLE = 0, /* Idle state - waiting. */
Hello1024	0:1619a6b826d7	150	PDSTART, /* Process start flag. */
Hello1024	0:1619a6b826d7	151	PDADDRESS, /* Process address field. */
Hello1024	0:1619a6b826d7	152	PDCONTROL, /* Process control field. */
Hello1024	0:1619a6b826d7	153	PDPROTOCOL1, /* Process protocol field 1. */
Hello1024	0:1619a6b826d7	154	PDPROTOCOL2, /* Process protocol field 2. */
Hello1024	0:1619a6b826d7	155	PDDATA /* Process data byte. */
Hello1024	0:1619a6b826d7	156	} PPPDevStates;
Hello1024	0:1619a6b826d7	157
Hello1024	0:1619a6b826d7	158	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
Hello1024	0:1619a6b826d7	159
Hello1024	0:1619a6b826d7	160	/************************/
Hello1024	0:1619a6b826d7	161	/* LOCAL DATA TYPES */
Hello1024	0:1619a6b826d7	162	/************************/
Hello1024	0:1619a6b826d7	163
Hello1024	0:1619a6b826d7	164	/** RX buffer size: this may be configured smaller! */
Hello1024	0:1619a6b826d7	165	#ifndef PPPOS_RX_BUFSIZE
Hello1024	0:1619a6b826d7	166	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
Hello1024	0:1619a6b826d7	167	#endif
Hello1024	0:1619a6b826d7	168
Hello1024	0:1619a6b826d7	169	typedef struct PPPControlRx_s {
Hello1024	0:1619a6b826d7	170	/** unit number / ppp descriptor */
Hello1024	0:1619a6b826d7	171	int pd;
Hello1024	0:1619a6b826d7	172	/** the rx file descriptor */
Hello1024	0:1619a6b826d7	173	sio_fd_t fd;
Hello1024	0:1619a6b826d7	174	/** receive buffer - encoded data is stored here */
Hello1024	0:1619a6b826d7	175	u_char rxbuf[PPPOS_RX_BUFSIZE];
Hello1024	0:1619a6b826d7	176
Hello1024	0:1619a6b826d7	177	/* The input packet. */
Hello1024	0:1619a6b826d7	178	struct pbuf inHead, inTail;
Hello1024	0:1619a6b826d7	179
Hello1024	0:1619a6b826d7	180	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	181	u16_t inProtocol; /* The input protocol code. */
Hello1024	0:1619a6b826d7	182	u16_t inFCS; /* Input Frame Check Sequence value. */
Hello1024	0:1619a6b826d7	183	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	184	PPPDevStates inState; /* The input process state. */
Hello1024	0:1619a6b826d7	185	char inEscaped; /* Escape next character. */
Hello1024	0:1619a6b826d7	186	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
Hello1024	0:1619a6b826d7	187	} PPPControlRx;
Hello1024	0:1619a6b826d7	188
Hello1024	0:1619a6b826d7	189	/*
Hello1024	0:1619a6b826d7	190	* PPP interface control block.
Hello1024	0:1619a6b826d7	191	*/
Hello1024	0:1619a6b826d7	192	typedef struct PPPControl_s {
Hello1024	0:1619a6b826d7	193	PPPControlRx rx;
Hello1024	0:1619a6b826d7	194	char openFlag; /* True when in use. */
Hello1024	0:1619a6b826d7	195	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	196	struct netif *ethif;
Hello1024	0:1619a6b826d7	197	struct pppoe_softc *pppoe_sc;
Hello1024	0:1619a6b826d7	198	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	199	int if_up; /* True when the interface is up. */
Hello1024	0:1619a6b826d7	200	int errCode; /* Code indicating why interface is down. */
Hello1024	0:1619a6b826d7	201	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	202	sio_fd_t fd; /* File device ID of port. */
Hello1024	0:1619a6b826d7	203	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	204	u16_t mtu; /* Peer's mru */
Hello1024	0:1619a6b826d7	205	int pcomp; /* Does peer accept protocol compression? */
Hello1024	0:1619a6b826d7	206	int accomp; /* Does peer accept addr/ctl compression? */
Hello1024	0:1619a6b826d7	207	u_long lastXMit; /* Time of last transmission. */
Hello1024	0:1619a6b826d7	208	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
Hello1024	0:1619a6b826d7	209	#if PPPOS_SUPPORT && VJ_SUPPORT
Hello1024	0:1619a6b826d7	210	int vjEnabled; /* Flag indicating VJ compression enabled. */
Hello1024	0:1619a6b826d7	211	struct vjcompress vjComp; /* Van Jacobson compression header. */
Hello1024	0:1619a6b826d7	212	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
Hello1024	0:1619a6b826d7	213
Hello1024	0:1619a6b826d7	214	struct netif netif;
Hello1024	0:1619a6b826d7	215
Hello1024	0:1619a6b826d7	216	struct ppp_addrs addrs;
Hello1024	0:1619a6b826d7	217
Hello1024	0:1619a6b826d7	218	void (linkStatusCB)(void ctx, int errCode, void *arg);
Hello1024	0:1619a6b826d7	219	void *linkStatusCtx;
Hello1024	0:1619a6b826d7	220
Hello1024	0:1619a6b826d7	221	} PPPControl;
Hello1024	0:1619a6b826d7	222
Hello1024	0:1619a6b826d7	223
Hello1024	0:1619a6b826d7	224	/*
Hello1024	0:1619a6b826d7	225	* Ioctl definitions.
Hello1024	0:1619a6b826d7	226	*/
Hello1024	0:1619a6b826d7	227
Hello1024	0:1619a6b826d7	228	struct npioctl {
Hello1024	0:1619a6b826d7	229	int protocol; /* PPP procotol, e.g. PPP_IP */
Hello1024	0:1619a6b826d7	230	enum NPmode mode;
Hello1024	0:1619a6b826d7	231	};
Hello1024	0:1619a6b826d7	232
Hello1024	0:1619a6b826d7	233
Hello1024	0:1619a6b826d7	234
Hello1024	0:1619a6b826d7	235	/***********************************/
Hello1024	0:1619a6b826d7	236	/* LOCAL FUNCTION DECLARATIONS */
Hello1024	0:1619a6b826d7	237	/***********************************/
Hello1024	0:1619a6b826d7	238	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	239	#if PPP_INPROC_OWNTHREAD
Hello1024	0:1619a6b826d7	240	static void pppInputThread(void *arg);
Hello1024	0:1619a6b826d7	241	#endif /* PPP_INPROC_OWNTHREAD */
Hello1024	0:1619a6b826d7	242	static void pppDrop(PPPControlRx *pcrx);
Hello1024	0:1619a6b826d7	243	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
Hello1024	0:1619a6b826d7	244	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	245
Hello1024	0:1619a6b826d7	246
Hello1024	0:1619a6b826d7	247	/******************************/
Hello1024	0:1619a6b826d7	248	/* PUBLIC DATA STRUCTURES */
Hello1024	0:1619a6b826d7	249	/******************************/
Hello1024	0:1619a6b826d7	250	u_long subnetMask;
Hello1024	0:1619a6b826d7	251
Hello1024	0:1619a6b826d7	252	static PPPControl pppControl[NUM_PPP] MEM_POSITION; /* The PPP interface control blocks. */
Hello1024	0:1619a6b826d7	253
Hello1024	0:1619a6b826d7	254	/*
Hello1024	0:1619a6b826d7	255	* PPP Data Link Layer "protocol" table.
Hello1024	0:1619a6b826d7	256	* One entry per supported protocol.
Hello1024	0:1619a6b826d7	257	* The last entry must be NULL.
Hello1024	0:1619a6b826d7	258	*/
Hello1024	0:1619a6b826d7	259	struct protent *ppp_protocols[] = {
Hello1024	0:1619a6b826d7	260	&lcp_protent,
Hello1024	0:1619a6b826d7	261	#if PAP_SUPPORT
Hello1024	0:1619a6b826d7	262	&pap_protent,
Hello1024	0:1619a6b826d7	263	#endif /* PAP_SUPPORT */
Hello1024	0:1619a6b826d7	264	#if CHAP_SUPPORT
Hello1024	0:1619a6b826d7	265	&chap_protent,
Hello1024	0:1619a6b826d7	266	#endif /* CHAP_SUPPORT */
Hello1024	0:1619a6b826d7	267	#if CBCP_SUPPORT
Hello1024	0:1619a6b826d7	268	&cbcp_protent,
Hello1024	0:1619a6b826d7	269	#endif /* CBCP_SUPPORT */
Hello1024	0:1619a6b826d7	270	&ipcp_protent,
Hello1024	0:1619a6b826d7	271	#if CCP_SUPPORT
Hello1024	0:1619a6b826d7	272	&ccp_protent,
Hello1024	0:1619a6b826d7	273	#endif /* CCP_SUPPORT */
Hello1024	0:1619a6b826d7	274	NULL
Hello1024	0:1619a6b826d7	275	};
Hello1024	0:1619a6b826d7	276
Hello1024	0:1619a6b826d7	277
Hello1024	0:1619a6b826d7	278	/*
Hello1024	0:1619a6b826d7	279	* Buffers for outgoing packets. This must be accessed only from the appropriate
Hello1024	0:1619a6b826d7	280	* PPP task so that it doesn't need to be protected to avoid collisions.
Hello1024	0:1619a6b826d7	281	*/
Hello1024	0:1619a6b826d7	282	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] MEM_POSITION;
Hello1024	0:1619a6b826d7	283
Hello1024	0:1619a6b826d7	284
Hello1024	0:1619a6b826d7	285	/*****************************/
Hello1024	0:1619a6b826d7	286	/* LOCAL DATA STRUCTURES */
Hello1024	0:1619a6b826d7	287	/*****************************/
Hello1024	0:1619a6b826d7	288
Hello1024	0:1619a6b826d7	289	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	290	/*
Hello1024	0:1619a6b826d7	291	* FCS lookup table as calculated by genfcstab.
Hello1024	0:1619a6b826d7	292	* @todo: smaller, slower implementation for lower memory footprint?
Hello1024	0:1619a6b826d7	293	*/
Hello1024	0:1619a6b826d7	294	static const u_short fcstab[256] = {
Hello1024	0:1619a6b826d7	295	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
Hello1024	0:1619a6b826d7	296	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
Hello1024	0:1619a6b826d7	297	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
Hello1024	0:1619a6b826d7	298	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
Hello1024	0:1619a6b826d7	299	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
Hello1024	0:1619a6b826d7	300	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
Hello1024	0:1619a6b826d7	301	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
Hello1024	0:1619a6b826d7	302	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
Hello1024	0:1619a6b826d7	303	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
Hello1024	0:1619a6b826d7	304	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
Hello1024	0:1619a6b826d7	305	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
Hello1024	0:1619a6b826d7	306	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
Hello1024	0:1619a6b826d7	307	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
Hello1024	0:1619a6b826d7	308	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
Hello1024	0:1619a6b826d7	309	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
Hello1024	0:1619a6b826d7	310	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
Hello1024	0:1619a6b826d7	311	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
Hello1024	0:1619a6b826d7	312	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
Hello1024	0:1619a6b826d7	313	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
Hello1024	0:1619a6b826d7	314	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
Hello1024	0:1619a6b826d7	315	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
Hello1024	0:1619a6b826d7	316	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
Hello1024	0:1619a6b826d7	317	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
Hello1024	0:1619a6b826d7	318	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
Hello1024	0:1619a6b826d7	319	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
Hello1024	0:1619a6b826d7	320	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
Hello1024	0:1619a6b826d7	321	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
Hello1024	0:1619a6b826d7	322	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
Hello1024	0:1619a6b826d7	323	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
Hello1024	0:1619a6b826d7	324	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
Hello1024	0:1619a6b826d7	325	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
Hello1024	0:1619a6b826d7	326	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
Hello1024	0:1619a6b826d7	327	};
Hello1024	0:1619a6b826d7	328
Hello1024	0:1619a6b826d7	329	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
Hello1024	0:1619a6b826d7	330	* to select the specific bit for a character. */
Hello1024	0:1619a6b826d7	331	static u_char pppACCMMask[] = {
Hello1024	0:1619a6b826d7	332	0x01,
Hello1024	0:1619a6b826d7	333	0x02,
Hello1024	0:1619a6b826d7	334	0x04,
Hello1024	0:1619a6b826d7	335	0x08,
Hello1024	0:1619a6b826d7	336	0x10,
Hello1024	0:1619a6b826d7	337	0x20,
Hello1024	0:1619a6b826d7	338	0x40,
Hello1024	0:1619a6b826d7	339	0x80
Hello1024	0:1619a6b826d7	340	};
Hello1024	0:1619a6b826d7	341
Hello1024	0:1619a6b826d7	342	/** Wake up the task blocked in reading from serial line (if any) */
Hello1024	0:1619a6b826d7	343	static void
Hello1024	0:1619a6b826d7	344	pppRecvWakeup(int pd)
Hello1024	0:1619a6b826d7	345	{
Hello1024	0:1619a6b826d7	346	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
Hello1024	0:1619a6b826d7	347	sio_read_abort(pppControl[pd].fd);
Hello1024	0:1619a6b826d7	348	}
Hello1024	0:1619a6b826d7	349	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	350
Hello1024	0:1619a6b826d7	351	void
Hello1024	0:1619a6b826d7	352	pppLinkTerminated(int pd)
Hello1024	0:1619a6b826d7	353	{
Hello1024	0:1619a6b826d7	354	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
Hello1024	0:1619a6b826d7	355
Hello1024	0:1619a6b826d7	356	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	357	if (pppControl[pd].ethif) {
Hello1024	0:1619a6b826d7	358	pppoe_disconnect(pppControl[pd].pppoe_sc);
Hello1024	0:1619a6b826d7	359	} else
Hello1024	0:1619a6b826d7	360	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	361	{
Hello1024	0:1619a6b826d7	362	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	363	PPPControl* pc;
Hello1024	0:1619a6b826d7	364	pppRecvWakeup(pd);
Hello1024	0:1619a6b826d7	365	pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	366	pppDrop(&pc->rx); /* bug fix #17726 */
Hello1024	0:1619a6b826d7	367
Hello1024	0:1619a6b826d7	368	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
Hello1024	0:1619a6b826d7	369	if (pc->linkStatusCB) {
Hello1024	0:1619a6b826d7	370	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
Hello1024	0:1619a6b826d7	371	}
Hello1024	0:1619a6b826d7	372
Hello1024	0:1619a6b826d7	373	pc->openFlag = 0;/**/
Hello1024	0:1619a6b826d7	374	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	375	}
Hello1024	0:1619a6b826d7	376	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
Hello1024	0:1619a6b826d7	377	}
Hello1024	0:1619a6b826d7	378
Hello1024	0:1619a6b826d7	379	void
Hello1024	0:1619a6b826d7	380	pppLinkDown(int pd)
Hello1024	0:1619a6b826d7	381	{
Hello1024	0:1619a6b826d7	382	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
Hello1024	0:1619a6b826d7	383
Hello1024	0:1619a6b826d7	384	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	385	if (pppControl[pd].ethif) {
Hello1024	0:1619a6b826d7	386	pppoe_disconnect(pppControl[pd].pppoe_sc);
Hello1024	0:1619a6b826d7	387	} else
Hello1024	0:1619a6b826d7	388	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	389	{
Hello1024	0:1619a6b826d7	390	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	391	pppRecvWakeup(pd);
Hello1024	0:1619a6b826d7	392	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	393	}
Hello1024	0:1619a6b826d7	394	}
Hello1024	0:1619a6b826d7	395
Hello1024	0:1619a6b826d7	396	/** Initiate LCP open request */
Hello1024	0:1619a6b826d7	397	static void
Hello1024	0:1619a6b826d7	398	pppStart(int pd)
Hello1024	0:1619a6b826d7	399	{
Hello1024	0:1619a6b826d7	400	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
Hello1024	0:1619a6b826d7	401	lcp_lowerup(pd);
Hello1024	0:1619a6b826d7	402	lcp_open(pd); /* Start protocol */
Hello1024	0:1619a6b826d7	403	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
Hello1024	0:1619a6b826d7	404	}
Hello1024	0:1619a6b826d7	405
Hello1024	0:1619a6b826d7	406	/** LCP close request */
Hello1024	0:1619a6b826d7	407	static void
Hello1024	0:1619a6b826d7	408	pppStop(int pd)
Hello1024	0:1619a6b826d7	409	{
Hello1024	0:1619a6b826d7	410	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
Hello1024	0:1619a6b826d7	411	lcp_close(pd, "User request");
Hello1024	0:1619a6b826d7	412	}
Hello1024	0:1619a6b826d7	413
Hello1024	0:1619a6b826d7	414	/** Called when carrier/link is lost */
Hello1024	0:1619a6b826d7	415	static void
Hello1024	0:1619a6b826d7	416	pppHup(int pd)
Hello1024	0:1619a6b826d7	417	{
Hello1024	0:1619a6b826d7	418	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
Hello1024	0:1619a6b826d7	419	lcp_lowerdown(pd);
Hello1024	0:1619a6b826d7	420	link_terminated(pd);
Hello1024	0:1619a6b826d7	421	}
Hello1024	0:1619a6b826d7	422
Hello1024	0:1619a6b826d7	423	/***********************************/
Hello1024	0:1619a6b826d7	424	/* PUBLIC FUNCTION DEFINITIONS */
Hello1024	0:1619a6b826d7	425	/***********************************/
Hello1024	0:1619a6b826d7	426	/* Initialize the PPP subsystem. */
Hello1024	0:1619a6b826d7	427
Hello1024	0:1619a6b826d7	428	struct ppp_settings ppp_settings;
Hello1024	0:1619a6b826d7	429
Hello1024	0:1619a6b826d7	430	void
Hello1024	0:1619a6b826d7	431	pppInit(void)
Hello1024	0:1619a6b826d7	432	{
Hello1024	0:1619a6b826d7	433	struct protent *protp;
Hello1024	0:1619a6b826d7	434	int i, j;
Hello1024	0:1619a6b826d7	435
Hello1024	0:1619a6b826d7	436	memset(&ppp_settings, 0, sizeof(ppp_settings));
Hello1024	0:1619a6b826d7	437	ppp_settings.usepeerdns = 1;
Hello1024	0:1619a6b826d7	438	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
Hello1024	0:1619a6b826d7	439
Hello1024	0:1619a6b826d7	440	magicInit();
Hello1024	0:1619a6b826d7	441
Hello1024	0:1619a6b826d7	442	subnetMask = PP_HTONL(0xffffff00);
Hello1024	0:1619a6b826d7	443
Hello1024	0:1619a6b826d7	444	for (i = 0; i < NUM_PPP; i++) {
Hello1024	0:1619a6b826d7	445	/* Initialize each protocol to the standard option set. */
Hello1024	0:1619a6b826d7	446	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
Hello1024	0:1619a6b826d7	447	(*protp->init)(i);
Hello1024	0:1619a6b826d7	448	}
Hello1024	0:1619a6b826d7	449	}
Hello1024	0:1619a6b826d7	450	}
Hello1024	0:1619a6b826d7	451
Hello1024	0:1619a6b826d7	452	void
Hello1024	0:1619a6b826d7	453	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
Hello1024	0:1619a6b826d7	454	{
Hello1024	0:1619a6b826d7	455	switch(authType) {
Hello1024	0:1619a6b826d7	456	case PPPAUTHTYPE_NONE:
Hello1024	0:1619a6b826d7	457	default:
Hello1024	0:1619a6b826d7	458	#ifdef LWIP_PPP_STRICT_PAP_REJECT
Hello1024	0:1619a6b826d7	459	ppp_settings.refuse_pap = 1;
Hello1024	0:1619a6b826d7	460	#else /* LWIP_PPP_STRICT_PAP_REJECT */
Hello1024	0:1619a6b826d7	461	/* some providers request pap and accept an empty login/pw */
Hello1024	0:1619a6b826d7	462	ppp_settings.refuse_pap = 0;
Hello1024	0:1619a6b826d7	463	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
Hello1024	0:1619a6b826d7	464	ppp_settings.refuse_chap = 1;
Hello1024	0:1619a6b826d7	465	break;
Hello1024	0:1619a6b826d7	466
Hello1024	0:1619a6b826d7	467	case PPPAUTHTYPE_ANY:
Hello1024	0:1619a6b826d7	468	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
Hello1024	0:1619a6b826d7	469	* RFC 1994 says:
Hello1024	0:1619a6b826d7	470	*
Hello1024	0:1619a6b826d7	471	* In practice, within or associated with each PPP server, there is a
Hello1024	0:1619a6b826d7	472	* database which associates "user" names with authentication
Hello1024	0:1619a6b826d7	473	* information ("secrets"). It is not anticipated that a particular
Hello1024	0:1619a6b826d7	474	* named user would be authenticated by multiple methods. This would
Hello1024	0:1619a6b826d7	475	* make the user vulnerable to attacks which negotiate the least secure
Hello1024	0:1619a6b826d7	476	* method from among a set (such as PAP rather than CHAP). If the same
Hello1024	0:1619a6b826d7	477	* secret was used, PAP would reveal the secret to be used later with
Hello1024	0:1619a6b826d7	478	* CHAP.
Hello1024	0:1619a6b826d7	479	*
Hello1024	0:1619a6b826d7	480	* Instead, for each user name there should be an indication of exactly
Hello1024	0:1619a6b826d7	481	* one method used to authenticate that user name. If a user needs to
Hello1024	0:1619a6b826d7	482	* make use of different authentication methods under different
Hello1024	0:1619a6b826d7	483	* circumstances, then distinct user names SHOULD be employed, each of
Hello1024	0:1619a6b826d7	484	* which identifies exactly one authentication method.
Hello1024	0:1619a6b826d7	485	*
Hello1024	0:1619a6b826d7	486	*/
Hello1024	0:1619a6b826d7	487	ppp_settings.refuse_pap = 0;
Hello1024	0:1619a6b826d7	488	ppp_settings.refuse_chap = 0;
Hello1024	0:1619a6b826d7	489	break;
Hello1024	0:1619a6b826d7	490
Hello1024	0:1619a6b826d7	491	case PPPAUTHTYPE_PAP:
Hello1024	0:1619a6b826d7	492	ppp_settings.refuse_pap = 0;
Hello1024	0:1619a6b826d7	493	ppp_settings.refuse_chap = 1;
Hello1024	0:1619a6b826d7	494	break;
Hello1024	0:1619a6b826d7	495
Hello1024	0:1619a6b826d7	496	case PPPAUTHTYPE_CHAP:
Hello1024	0:1619a6b826d7	497	ppp_settings.refuse_pap = 1;
Hello1024	0:1619a6b826d7	498	ppp_settings.refuse_chap = 0;
Hello1024	0:1619a6b826d7	499	break;
Hello1024	0:1619a6b826d7	500	}
Hello1024	0:1619a6b826d7	501
Hello1024	0:1619a6b826d7	502	if(user) {
Hello1024	0:1619a6b826d7	503	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
Hello1024	0:1619a6b826d7	504	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
Hello1024	0:1619a6b826d7	505	} else {
Hello1024	0:1619a6b826d7	506	ppp_settings.user[0] = '\0';
Hello1024	0:1619a6b826d7	507	}
Hello1024	0:1619a6b826d7	508
Hello1024	0:1619a6b826d7	509	if(passwd) {
Hello1024	0:1619a6b826d7	510	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
Hello1024	0:1619a6b826d7	511	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
Hello1024	0:1619a6b826d7	512	} else {
Hello1024	0:1619a6b826d7	513	ppp_settings.passwd[0] = '\0';
Hello1024	0:1619a6b826d7	514	}
Hello1024	0:1619a6b826d7	515	}
Hello1024	0:1619a6b826d7	516
Hello1024	0:1619a6b826d7	517	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	518	/** Open a new PPP connection using the given I/O device.
Hello1024	0:1619a6b826d7	519	* This initializes the PPP control block but does not
Hello1024	0:1619a6b826d7	520	* attempt to negotiate the LCP session. If this port
Hello1024	0:1619a6b826d7	521	* connects to a modem, the modem connection must be
Hello1024	0:1619a6b826d7	522	* established before calling this.
Hello1024	0:1619a6b826d7	523	* Return a new PPP connection descriptor on success or
Hello1024	0:1619a6b826d7	524	* an error code (negative) on failure.
Hello1024	0:1619a6b826d7	525	*
Hello1024	0:1619a6b826d7	526	* pppOpen() is directly defined to this function.
Hello1024	0:1619a6b826d7	527	*/
Hello1024	0:1619a6b826d7	528	int
Hello1024	0:1619a6b826d7	529	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
Hello1024	0:1619a6b826d7	530	{
Hello1024	0:1619a6b826d7	531	PPPControl *pc;
Hello1024	0:1619a6b826d7	532	int pd;
Hello1024	0:1619a6b826d7	533
Hello1024	0:1619a6b826d7	534	if (linkStatusCB == NULL) {
Hello1024	0:1619a6b826d7	535	/* PPP is single-threaded: without a callback,
Hello1024	0:1619a6b826d7	536	* there is no way to know when the link is up. */
Hello1024	0:1619a6b826d7	537	return PPPERR_PARAM;
Hello1024	0:1619a6b826d7	538	}
Hello1024	0:1619a6b826d7	539
Hello1024	0:1619a6b826d7	540	/* Find a free PPP session descriptor. */
Hello1024	0:1619a6b826d7	541	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
Hello1024	0:1619a6b826d7	542
Hello1024	0:1619a6b826d7	543	if (pd >= NUM_PPP) {
Hello1024	0:1619a6b826d7	544	pd = PPPERR_OPEN;
Hello1024	0:1619a6b826d7	545	} else {
Hello1024	0:1619a6b826d7	546	pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	547	/* @todo: is this correct or do I overwrite something? */
Hello1024	0:1619a6b826d7	548	memset(pc, 0, sizeof(PPPControl));
Hello1024	0:1619a6b826d7	549	pc->rx.pd = pd;
Hello1024	0:1619a6b826d7	550	pc->rx.fd = fd;
Hello1024	0:1619a6b826d7	551
Hello1024	0:1619a6b826d7	552	pc->openFlag = 1;
Hello1024	0:1619a6b826d7	553	pc->fd = fd;
Hello1024	0:1619a6b826d7	554
Hello1024	0:1619a6b826d7	555	#if VJ_SUPPORT
Hello1024	0:1619a6b826d7	556	vj_compress_init(&pc->vjComp);
Hello1024	0:1619a6b826d7	557	#endif /* VJ_SUPPORT */
Hello1024	0:1619a6b826d7	558
Hello1024	0:1619a6b826d7	559	/*
Hello1024	0:1619a6b826d7	560	* Default the in and out accm so that escape and flag characters
Hello1024	0:1619a6b826d7	561	* are always escaped.
Hello1024	0:1619a6b826d7	562	*/
Hello1024	0:1619a6b826d7	563	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
Hello1024	0:1619a6b826d7	564	pc->outACCM[15] = 0x60;
Hello1024	0:1619a6b826d7	565
Hello1024	0:1619a6b826d7	566	pc->linkStatusCB = linkStatusCB;
Hello1024	0:1619a6b826d7	567	pc->linkStatusCtx = linkStatusCtx;
Hello1024	0:1619a6b826d7	568
Hello1024	0:1619a6b826d7	569	/*
Hello1024	0:1619a6b826d7	570	* Start the connection and handle incoming events (packet or timeout).
Hello1024	0:1619a6b826d7	571	*/
Hello1024	0:1619a6b826d7	572	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
Hello1024	0:1619a6b826d7	573	pppStart(pd);
Hello1024	0:1619a6b826d7	574	#if PPP_INPROC_OWNTHREAD
Hello1024	0:1619a6b826d7	575	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
Hello1024	0:1619a6b826d7	576	#endif
Hello1024	0:1619a6b826d7	577	}
Hello1024	0:1619a6b826d7	578
Hello1024	0:1619a6b826d7	579	return pd;
Hello1024	0:1619a6b826d7	580	}
Hello1024	0:1619a6b826d7	581	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	582
Hello1024	0:1619a6b826d7	583	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	584	static void pppOverEthernetLinkStatusCB(int pd, int up);
Hello1024	0:1619a6b826d7	585
Hello1024	0:1619a6b826d7	586	void
Hello1024	0:1619a6b826d7	587	pppOverEthernetClose(int pd)
Hello1024	0:1619a6b826d7	588	{
Hello1024	0:1619a6b826d7	589	PPPControl* pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	590
Hello1024	0:1619a6b826d7	591	/* TJL There's no lcp_deinit */
Hello1024	0:1619a6b826d7	592	lcp_close(pd, NULL);
Hello1024	0:1619a6b826d7	593
Hello1024	0:1619a6b826d7	594	pppoe_destroy(&pc->netif);
Hello1024	0:1619a6b826d7	595	}
Hello1024	0:1619a6b826d7	596
Hello1024	0:1619a6b826d7	597	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
Hello1024	0:1619a6b826d7	598	{
Hello1024	0:1619a6b826d7	599	PPPControl *pc;
Hello1024	0:1619a6b826d7	600	int pd;
Hello1024	0:1619a6b826d7	601
Hello1024	0:1619a6b826d7	602	LWIP_UNUSED_ARG(service_name);
Hello1024	0:1619a6b826d7	603	LWIP_UNUSED_ARG(concentrator_name);
Hello1024	0:1619a6b826d7	604
Hello1024	0:1619a6b826d7	605	if (linkStatusCB == NULL) {
Hello1024	0:1619a6b826d7	606	/* PPP is single-threaded: without a callback,
Hello1024	0:1619a6b826d7	607	* there is no way to know when the link is up. */
Hello1024	0:1619a6b826d7	608	return PPPERR_PARAM;
Hello1024	0:1619a6b826d7	609	}
Hello1024	0:1619a6b826d7	610
Hello1024	0:1619a6b826d7	611	/* Find a free PPP session descriptor. Critical region? */
Hello1024	0:1619a6b826d7	612	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
Hello1024	0:1619a6b826d7	613	if (pd >= NUM_PPP) {
Hello1024	0:1619a6b826d7	614	pd = PPPERR_OPEN;
Hello1024	0:1619a6b826d7	615	} else {
Hello1024	0:1619a6b826d7	616	pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	617	memset(pc, 0, sizeof(PPPControl));
Hello1024	0:1619a6b826d7	618	pc->openFlag = 1;
Hello1024	0:1619a6b826d7	619	pc->ethif = ethif;
Hello1024	0:1619a6b826d7	620
Hello1024	0:1619a6b826d7	621	pc->linkStatusCB = linkStatusCB;
Hello1024	0:1619a6b826d7	622	pc->linkStatusCtx = linkStatusCtx;
Hello1024	0:1619a6b826d7	623
Hello1024	0:1619a6b826d7	624	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
Hello1024	0:1619a6b826d7	625	lcp_wantoptions[pd].neg_asyncmap = 0;
Hello1024	0:1619a6b826d7	626	lcp_wantoptions[pd].neg_pcompression = 0;
Hello1024	0:1619a6b826d7	627	lcp_wantoptions[pd].neg_accompression = 0;
Hello1024	0:1619a6b826d7	628
Hello1024	0:1619a6b826d7	629	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
Hello1024	0:1619a6b826d7	630	lcp_allowoptions[pd].neg_asyncmap = 0;
Hello1024	0:1619a6b826d7	631	lcp_allowoptions[pd].neg_pcompression = 0;
Hello1024	0:1619a6b826d7	632	lcp_allowoptions[pd].neg_accompression = 0;
Hello1024	0:1619a6b826d7	633
Hello1024	0:1619a6b826d7	634	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
Hello1024	0:1619a6b826d7	635	pc->openFlag = 0;
Hello1024	0:1619a6b826d7	636	return PPPERR_OPEN;
Hello1024	0:1619a6b826d7	637	}
Hello1024	0:1619a6b826d7	638
Hello1024	0:1619a6b826d7	639	pppoe_connect(pc->pppoe_sc);
Hello1024	0:1619a6b826d7	640	}
Hello1024	0:1619a6b826d7	641
Hello1024	0:1619a6b826d7	642	return pd;
Hello1024	0:1619a6b826d7	643	}
Hello1024	0:1619a6b826d7	644	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	645
Hello1024	0:1619a6b826d7	646
Hello1024	0:1619a6b826d7	647	/* Close a PPP connection and release the descriptor.
Hello1024	0:1619a6b826d7	648	* Any outstanding packets in the queues are dropped.
Hello1024	0:1619a6b826d7	649	* Return 0 on success, an error code on failure. */
Hello1024	0:1619a6b826d7	650	int
Hello1024	0:1619a6b826d7	651	pppClose(int pd)
Hello1024	0:1619a6b826d7	652	{
Hello1024	0:1619a6b826d7	653	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	654	int st = 0;
Hello1024	0:1619a6b826d7	655
Hello1024	0:1619a6b826d7	656	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
Hello1024	0:1619a6b826d7	657
Hello1024	0:1619a6b826d7	658	/* Disconnect */
Hello1024	0:1619a6b826d7	659	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	660	if(pc->ethif) {
Hello1024	0:1619a6b826d7	661	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
Hello1024	0:1619a6b826d7	662	pc->errCode = PPPERR_USER;
Hello1024	0:1619a6b826d7	663	/* This will leave us at PHASE_DEAD. */
Hello1024	0:1619a6b826d7	664	pppStop(pd);
Hello1024	0:1619a6b826d7	665	} else
Hello1024	0:1619a6b826d7	666	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	667	{
Hello1024	0:1619a6b826d7	668	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	669	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
Hello1024	0:1619a6b826d7	670	pc->errCode = PPPERR_USER;
Hello1024	0:1619a6b826d7	671	/* This will leave us at PHASE_DEAD. */
Hello1024	0:1619a6b826d7	672	pppStop(pd);
Hello1024	0:1619a6b826d7	673	pppRecvWakeup(pd);
Hello1024	0:1619a6b826d7	674	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	675	}
Hello1024	0:1619a6b826d7	676
Hello1024	0:1619a6b826d7	677	return st;
Hello1024	0:1619a6b826d7	678	}
Hello1024	0:1619a6b826d7	679
Hello1024	0:1619a6b826d7	680	/* This function is called when carrier is lost on the PPP channel. */
Hello1024	0:1619a6b826d7	681	void
Hello1024	0:1619a6b826d7	682	pppSigHUP(int pd)
Hello1024	0:1619a6b826d7	683	{
Hello1024	0:1619a6b826d7	684	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	685	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	686	if(pc->ethif) {
Hello1024	0:1619a6b826d7	687	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
Hello1024	0:1619a6b826d7	688	pppHup(pd);
Hello1024	0:1619a6b826d7	689	} else
Hello1024	0:1619a6b826d7	690	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	691	{
Hello1024	0:1619a6b826d7	692	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	693	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
Hello1024	0:1619a6b826d7	694	pppHup(pd);
Hello1024	0:1619a6b826d7	695	pppRecvWakeup(pd);
Hello1024	0:1619a6b826d7	696	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	697	}
Hello1024	0:1619a6b826d7	698	}
Hello1024	0:1619a6b826d7	699
Hello1024	0:1619a6b826d7	700	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	701	static void
Hello1024	0:1619a6b826d7	702	nPut(PPPControl pc, struct pbuf nb)
Hello1024	0:1619a6b826d7	703	{
Hello1024	0:1619a6b826d7	704	struct pbuf *b;
Hello1024	0:1619a6b826d7	705	int c;
Hello1024	0:1619a6b826d7	706
Hello1024	0:1619a6b826d7	707	for(b = nb; b != NULL; b = b->next) {
Hello1024	0:1619a6b826d7	708	if((c = sio_write(pc->fd, (u8_t *)b->payload, b->len)) != b->len) {
Hello1024	0:1619a6b826d7	709	PPPDEBUG(LOG_WARNING,
Hello1024	0:1619a6b826d7	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));
Hello1024	0:1619a6b826d7	711	LINK_STATS_INC(link.err);
Hello1024	0:1619a6b826d7	712	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
Hello1024	0:1619a6b826d7	713	snmp_inc_ifoutdiscards(&pc->netif);
Hello1024	0:1619a6b826d7	714	pbuf_free(nb);
Hello1024	0:1619a6b826d7	715	return;
Hello1024	0:1619a6b826d7	716	}
Hello1024	0:1619a6b826d7	717	}
Hello1024	0:1619a6b826d7	718
Hello1024	0:1619a6b826d7	719	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
Hello1024	0:1619a6b826d7	720	snmp_inc_ifoutucastpkts(&pc->netif);
Hello1024	0:1619a6b826d7	721	pbuf_free(nb);
Hello1024	0:1619a6b826d7	722	LINK_STATS_INC(link.xmit);
Hello1024	0:1619a6b826d7	723	}
Hello1024	0:1619a6b826d7	724
Hello1024	0:1619a6b826d7	725	/*
Hello1024	0:1619a6b826d7	726	* pppAppend - append given character to end of given pbuf. If outACCM
Hello1024	0:1619a6b826d7	727	* is not NULL and the character needs to be escaped, do so.
Hello1024	0:1619a6b826d7	728	* If pbuf is full, append another.
Hello1024	0:1619a6b826d7	729	* Return the current pbuf.
Hello1024	0:1619a6b826d7	730	*/
Hello1024	0:1619a6b826d7	731	static struct pbuf *
Hello1024	0:1619a6b826d7	732	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
Hello1024	0:1619a6b826d7	733	{
Hello1024	0:1619a6b826d7	734	struct pbuf *tb = nb;
Hello1024	0:1619a6b826d7	735
Hello1024	0:1619a6b826d7	736	/* Make sure there is room for the character and an escape code.
Hello1024	0:1619a6b826d7	737	* Sure we don't quite fill the buffer if the character doesn't
Hello1024	0:1619a6b826d7	738	* get escaped but is one character worth complicating this? */
Hello1024	0:1619a6b826d7	739	/* Note: We assume no packet header. */
Hello1024	0:1619a6b826d7	740	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
Hello1024	0:1619a6b826d7	741	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
Hello1024	0:1619a6b826d7	742	if (tb) {
Hello1024	0:1619a6b826d7	743	nb->next = tb;
Hello1024	0:1619a6b826d7	744	} else {
Hello1024	0:1619a6b826d7	745	LINK_STATS_INC(link.memerr);
Hello1024	0:1619a6b826d7	746	}
Hello1024	0:1619a6b826d7	747	nb = tb;
Hello1024	0:1619a6b826d7	748	}
Hello1024	0:1619a6b826d7	749
Hello1024	0:1619a6b826d7	750	if (nb) {
Hello1024	0:1619a6b826d7	751	if (outACCM && ESCAPE_P(*outACCM, c)) {
Hello1024	0:1619a6b826d7	752	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
Hello1024	0:1619a6b826d7	753	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
Hello1024	0:1619a6b826d7	754	} else {
Hello1024	0:1619a6b826d7	755	((u_char)nb->payload + nb->len++) = c;
Hello1024	0:1619a6b826d7	756	}
Hello1024	0:1619a6b826d7	757	}
Hello1024	0:1619a6b826d7	758
Hello1024	0:1619a6b826d7	759	return tb;
Hello1024	0:1619a6b826d7	760	}
Hello1024	0:1619a6b826d7	761	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	762
Hello1024	0:1619a6b826d7	763	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	764	static err_t
Hello1024	0:1619a6b826d7	765	pppifOutputOverEthernet(int pd, struct pbuf *p)
Hello1024	0:1619a6b826d7	766	{
Hello1024	0:1619a6b826d7	767	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	768	struct pbuf *pb;
Hello1024	0:1619a6b826d7	769	u_short protocol = PPP_IP;
Hello1024	0:1619a6b826d7	770	int i=0;
Hello1024	0:1619a6b826d7	771	u16_t tot_len;
Hello1024	0:1619a6b826d7	772
Hello1024	0:1619a6b826d7	773	/* @todo: try to use pbuf_header() here! */
Hello1024	0:1619a6b826d7	774	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
Hello1024	0:1619a6b826d7	775	if(!pb) {
Hello1024	0:1619a6b826d7	776	LINK_STATS_INC(link.memerr);
Hello1024	0:1619a6b826d7	777	LINK_STATS_INC(link.proterr);
Hello1024	0:1619a6b826d7	778	snmp_inc_ifoutdiscards(&pc->netif);
Hello1024	0:1619a6b826d7	779	return ERR_MEM;
Hello1024	0:1619a6b826d7	780	}
Hello1024	0:1619a6b826d7	781
Hello1024	0:1619a6b826d7	782	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
Hello1024	0:1619a6b826d7	783
Hello1024	0:1619a6b826d7	784	pc->lastXMit = sys_jiffies();
Hello1024	0:1619a6b826d7	785
Hello1024	0:1619a6b826d7	786	if (!pc->pcomp \|\| protocol > 0xFF) {
Hello1024	0:1619a6b826d7	787	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
Hello1024	0:1619a6b826d7	788	}
Hello1024	0:1619a6b826d7	789	((u_char)pb->payload + i) = protocol & 0xFF;
Hello1024	0:1619a6b826d7	790
Hello1024	0:1619a6b826d7	791	pbuf_chain(pb, p);
Hello1024	0:1619a6b826d7	792	tot_len = pb->tot_len;
Hello1024	0:1619a6b826d7	793
Hello1024	0:1619a6b826d7	794	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
Hello1024	0:1619a6b826d7	795	LINK_STATS_INC(link.err);
Hello1024	0:1619a6b826d7	796	snmp_inc_ifoutdiscards(&pc->netif);
Hello1024	0:1619a6b826d7	797	return PPPERR_DEVICE;
Hello1024	0:1619a6b826d7	798	}
Hello1024	0:1619a6b826d7	799
Hello1024	0:1619a6b826d7	800	snmp_add_ifoutoctets(&pc->netif, tot_len);
Hello1024	0:1619a6b826d7	801	snmp_inc_ifoutucastpkts(&pc->netif);
Hello1024	0:1619a6b826d7	802	LINK_STATS_INC(link.xmit);
Hello1024	0:1619a6b826d7	803	return ERR_OK;
Hello1024	0:1619a6b826d7	804	}
Hello1024	0:1619a6b826d7	805	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	806
Hello1024	0:1619a6b826d7	807	/* Send a packet on the given connection. */
Hello1024	0:1619a6b826d7	808	static err_t
Hello1024	0:1619a6b826d7	809	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
Hello1024	0:1619a6b826d7	810	{
Hello1024	0:1619a6b826d7	811	int pd = (int)(size_t)netif->state;
Hello1024	0:1619a6b826d7	812	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	813	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	814	u_short protocol = PPP_IP;
Hello1024	0:1619a6b826d7	815	u_int fcsOut = PPP_INITFCS;
Hello1024	0:1619a6b826d7	816	struct pbuf headMB = NULL, tailMB = NULL, *p;
Hello1024	0:1619a6b826d7	817	u_char c;
Hello1024	0:1619a6b826d7	818	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	819
Hello1024	0:1619a6b826d7	820	LWIP_UNUSED_ARG(ipaddr);
Hello1024	0:1619a6b826d7	821
Hello1024	0:1619a6b826d7	822	/* Validate parameters. */
Hello1024	0:1619a6b826d7	823	/* We let any protocol value go through - it can't hurt us
Hello1024	0:1619a6b826d7	824	* and the peer will just drop it if it's not accepting it. */
Hello1024	0:1619a6b826d7	825	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
Hello1024	0:1619a6b826d7	826	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
Hello1024	0:1619a6b826d7	827	pd, PPP_IP, pb));
Hello1024	0:1619a6b826d7	828	LINK_STATS_INC(link.opterr);
Hello1024	0:1619a6b826d7	829	LINK_STATS_INC(link.drop);
Hello1024	0:1619a6b826d7	830	snmp_inc_ifoutdiscards(netif);
Hello1024	0:1619a6b826d7	831	return ERR_ARG;
Hello1024	0:1619a6b826d7	832	}
Hello1024	0:1619a6b826d7	833
Hello1024	0:1619a6b826d7	834	/* Check that the link is up. */
Hello1024	0:1619a6b826d7	835	if (lcp_phase[pd] == PHASE_DEAD) {
Hello1024	0:1619a6b826d7	836	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
Hello1024	0:1619a6b826d7	837	LINK_STATS_INC(link.rterr);
Hello1024	0:1619a6b826d7	838	LINK_STATS_INC(link.drop);
Hello1024	0:1619a6b826d7	839	snmp_inc_ifoutdiscards(netif);
Hello1024	0:1619a6b826d7	840	return ERR_RTE;
Hello1024	0:1619a6b826d7	841	}
Hello1024	0:1619a6b826d7	842
Hello1024	0:1619a6b826d7	843	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	844	if(pc->ethif) {
Hello1024	0:1619a6b826d7	845	return pppifOutputOverEthernet(pd, pb);
Hello1024	0:1619a6b826d7	846	}
Hello1024	0:1619a6b826d7	847	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	848
Hello1024	0:1619a6b826d7	849	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	850	/* Grab an output buffer. */
Hello1024	0:1619a6b826d7	851	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
Hello1024	0:1619a6b826d7	852	if (headMB == NULL) {
Hello1024	0:1619a6b826d7	853	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
Hello1024	0:1619a6b826d7	854	LINK_STATS_INC(link.memerr);
Hello1024	0:1619a6b826d7	855	LINK_STATS_INC(link.drop);
Hello1024	0:1619a6b826d7	856	snmp_inc_ifoutdiscards(netif);
Hello1024	0:1619a6b826d7	857	return ERR_MEM;
Hello1024	0:1619a6b826d7	858	}
Hello1024	0:1619a6b826d7	859
Hello1024	0:1619a6b826d7	860	#if VJ_SUPPORT
Hello1024	0:1619a6b826d7	861	/*
Hello1024	0:1619a6b826d7	862	* Attempt Van Jacobson header compression if VJ is configured and
Hello1024	0:1619a6b826d7	863	* this is an IP packet.
Hello1024	0:1619a6b826d7	864	*/
Hello1024	0:1619a6b826d7	865	if (protocol == PPP_IP && pc->vjEnabled) {
Hello1024	0:1619a6b826d7	866	switch (vj_compress_tcp(&pc->vjComp, pb)) {
Hello1024	0:1619a6b826d7	867	case TYPE_IP:
Hello1024	0:1619a6b826d7	868	/* No change...
Hello1024	0:1619a6b826d7	869	protocol = PPP_IP_PROTOCOL; */
Hello1024	0:1619a6b826d7	870	break;
Hello1024	0:1619a6b826d7	871	case TYPE_COMPRESSED_TCP:
Hello1024	0:1619a6b826d7	872	protocol = PPP_VJC_COMP;
Hello1024	0:1619a6b826d7	873	break;
Hello1024	0:1619a6b826d7	874	case TYPE_UNCOMPRESSED_TCP:
Hello1024	0:1619a6b826d7	875	protocol = PPP_VJC_UNCOMP;
Hello1024	0:1619a6b826d7	876	break;
Hello1024	0:1619a6b826d7	877	default:
Hello1024	0:1619a6b826d7	878	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
Hello1024	0:1619a6b826d7	879	LINK_STATS_INC(link.proterr);
Hello1024	0:1619a6b826d7	880	LINK_STATS_INC(link.drop);
Hello1024	0:1619a6b826d7	881	snmp_inc_ifoutdiscards(netif);
Hello1024	0:1619a6b826d7	882	pbuf_free(headMB);
Hello1024	0:1619a6b826d7	883	return ERR_VAL;
Hello1024	0:1619a6b826d7	884	}
Hello1024	0:1619a6b826d7	885	}
Hello1024	0:1619a6b826d7	886	#endif /* VJ_SUPPORT */
Hello1024	0:1619a6b826d7	887
Hello1024	0:1619a6b826d7	888	tailMB = headMB;
Hello1024	0:1619a6b826d7	889
Hello1024	0:1619a6b826d7	890	/* Build the PPP header. */
Hello1024	0:1619a6b826d7	891	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
Hello1024	0:1619a6b826d7	892	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
Hello1024	0:1619a6b826d7	893	}
Hello1024	0:1619a6b826d7	894
Hello1024	0:1619a6b826d7	895	pc->lastXMit = sys_jiffies();
Hello1024	0:1619a6b826d7	896	if (!pc->accomp) {
Hello1024	0:1619a6b826d7	897	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
Hello1024	0:1619a6b826d7	898	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
Hello1024	0:1619a6b826d7	899	fcsOut = PPP_FCS(fcsOut, PPP_UI);
Hello1024	0:1619a6b826d7	900	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
Hello1024	0:1619a6b826d7	901	}
Hello1024	0:1619a6b826d7	902	if (!pc->pcomp \|\| protocol > 0xFF) {
Hello1024	0:1619a6b826d7	903	c = (protocol >> 8) & 0xFF;
Hello1024	0:1619a6b826d7	904	fcsOut = PPP_FCS(fcsOut, c);
Hello1024	0:1619a6b826d7	905	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Hello1024	0:1619a6b826d7	906	}
Hello1024	0:1619a6b826d7	907	c = protocol & 0xFF;
Hello1024	0:1619a6b826d7	908	fcsOut = PPP_FCS(fcsOut, c);
Hello1024	0:1619a6b826d7	909	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Hello1024	0:1619a6b826d7	910
Hello1024	0:1619a6b826d7	911	/* Load packet. */
Hello1024	0:1619a6b826d7	912	for(p = pb; p; p = p->next) {
Hello1024	0:1619a6b826d7	913	int n;
Hello1024	0:1619a6b826d7	914	u_char *sPtr;
Hello1024	0:1619a6b826d7	915
Hello1024	0:1619a6b826d7	916	sPtr = (u_char*)p->payload;
Hello1024	0:1619a6b826d7	917	n = p->len;
Hello1024	0:1619a6b826d7	918	while (n-- > 0) {
Hello1024	0:1619a6b826d7	919	c = *sPtr++;
Hello1024	0:1619a6b826d7	920
Hello1024	0:1619a6b826d7	921	/* Update FCS before checking for special characters. */
Hello1024	0:1619a6b826d7	922	fcsOut = PPP_FCS(fcsOut, c);
Hello1024	0:1619a6b826d7	923
Hello1024	0:1619a6b826d7	924	/* Copy to output buffer escaping special characters. */
Hello1024	0:1619a6b826d7	925	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Hello1024	0:1619a6b826d7	926	}
Hello1024	0:1619a6b826d7	927	}
Hello1024	0:1619a6b826d7	928
Hello1024	0:1619a6b826d7	929	/* Add FCS and trailing flag. */
Hello1024	0:1619a6b826d7	930	c = ~fcsOut & 0xFF;
Hello1024	0:1619a6b826d7	931	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Hello1024	0:1619a6b826d7	932	c = (~fcsOut >> 8) & 0xFF;
Hello1024	0:1619a6b826d7	933	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Hello1024	0:1619a6b826d7	934	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
Hello1024	0:1619a6b826d7	935
Hello1024	0:1619a6b826d7	936	/* If we failed to complete the packet, throw it away. */
Hello1024	0:1619a6b826d7	937	if (!tailMB) {
Hello1024	0:1619a6b826d7	938	PPPDEBUG(LOG_WARNING,
Hello1024	0:1619a6b826d7	939	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
Hello1024	0:1619a6b826d7	940	pd, protocol));
Hello1024	0:1619a6b826d7	941	pbuf_free(headMB);
Hello1024	0:1619a6b826d7	942	LINK_STATS_INC(link.memerr);
Hello1024	0:1619a6b826d7	943	LINK_STATS_INC(link.drop);
Hello1024	0:1619a6b826d7	944	snmp_inc_ifoutdiscards(netif);
Hello1024	0:1619a6b826d7	945	return ERR_MEM;
Hello1024	0:1619a6b826d7	946	}
Hello1024	0:1619a6b826d7	947
Hello1024	0:1619a6b826d7	948	/* Send it. */
Hello1024	0:1619a6b826d7	949	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
Hello1024	0:1619a6b826d7	950
Hello1024	0:1619a6b826d7	951	nPut(pc, headMB);
Hello1024	0:1619a6b826d7	952	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	953
Hello1024	0:1619a6b826d7	954	return ERR_OK;
Hello1024	0:1619a6b826d7	955	}
Hello1024	0:1619a6b826d7	956
Hello1024	0:1619a6b826d7	957	/* Get and set parameters for the given connection.
Hello1024	0:1619a6b826d7	958	* Return 0 on success, an error code on failure. */
Hello1024	0:1619a6b826d7	959	int
Hello1024	0:1619a6b826d7	960	pppIOCtl(int pd, int cmd, void *arg)
Hello1024	0:1619a6b826d7	961	{
Hello1024	0:1619a6b826d7	962	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	963	int st = 0;
Hello1024	0:1619a6b826d7	964
Hello1024	0:1619a6b826d7	965	if (pd < 0 \|\| pd >= NUM_PPP) {
Hello1024	0:1619a6b826d7	966	st = PPPERR_PARAM;
Hello1024	0:1619a6b826d7	967	} else {
Hello1024	0:1619a6b826d7	968	switch(cmd) {
Hello1024	0:1619a6b826d7	969	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
Hello1024	0:1619a6b826d7	970	if (arg) {
Hello1024	0:1619a6b826d7	971	(int )arg = (int)(pc->if_up);
Hello1024	0:1619a6b826d7	972	} else {
Hello1024	0:1619a6b826d7	973	st = PPPERR_PARAM;
Hello1024	0:1619a6b826d7	974	}
Hello1024	0:1619a6b826d7	975	break;
Hello1024	0:1619a6b826d7	976	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
Hello1024	0:1619a6b826d7	977	if (arg) {
Hello1024	0:1619a6b826d7	978	pc->errCode = (int )arg;
Hello1024	0:1619a6b826d7	979	} else {
Hello1024	0:1619a6b826d7	980	st = PPPERR_PARAM;
Hello1024	0:1619a6b826d7	981	}
Hello1024	0:1619a6b826d7	982	break;
Hello1024	0:1619a6b826d7	983	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
Hello1024	0:1619a6b826d7	984	if (arg) {
Hello1024	0:1619a6b826d7	985	(int )arg = (int)(pc->errCode);
Hello1024	0:1619a6b826d7	986	} else {
Hello1024	0:1619a6b826d7	987	st = PPPERR_PARAM;
Hello1024	0:1619a6b826d7	988	}
Hello1024	0:1619a6b826d7	989	break;
Hello1024	0:1619a6b826d7	990	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	991	case PPPCTLG_FD: /* Get the fd associated with the ppp */
Hello1024	0:1619a6b826d7	992	if (arg) {
Hello1024	0:1619a6b826d7	993	(sio_fd_t )arg = pc->fd;
Hello1024	0:1619a6b826d7	994	} else {
Hello1024	0:1619a6b826d7	995	st = PPPERR_PARAM;
Hello1024	0:1619a6b826d7	996	}
Hello1024	0:1619a6b826d7	997	break;
Hello1024	0:1619a6b826d7	998	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	999	default:
Hello1024	0:1619a6b826d7	1000	st = PPPERR_PARAM;
Hello1024	0:1619a6b826d7	1001	break;
Hello1024	0:1619a6b826d7	1002	}
Hello1024	0:1619a6b826d7	1003	}
Hello1024	0:1619a6b826d7	1004
Hello1024	0:1619a6b826d7	1005	return st;
Hello1024	0:1619a6b826d7	1006	}
Hello1024	0:1619a6b826d7	1007
Hello1024	0:1619a6b826d7	1008	/*
Hello1024	0:1619a6b826d7	1009	* Return the Maximum Transmission Unit for the given PPP connection.
Hello1024	0:1619a6b826d7	1010	*/
Hello1024	0:1619a6b826d7	1011	u_short
Hello1024	0:1619a6b826d7	1012	pppMTU(int pd)
Hello1024	0:1619a6b826d7	1013	{
Hello1024	0:1619a6b826d7	1014	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	1015	u_short st;
Hello1024	0:1619a6b826d7	1016
Hello1024	0:1619a6b826d7	1017	/* Validate parameters. */
Hello1024	0:1619a6b826d7	1018	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Hello1024	0:1619a6b826d7	1019	st = 0;
Hello1024	0:1619a6b826d7	1020	} else {
Hello1024	0:1619a6b826d7	1021	st = pc->mtu;
Hello1024	0:1619a6b826d7	1022	}
Hello1024	0:1619a6b826d7	1023
Hello1024	0:1619a6b826d7	1024	return st;
Hello1024	0:1619a6b826d7	1025	}
Hello1024	0:1619a6b826d7	1026
Hello1024	0:1619a6b826d7	1027	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	1028	int
Hello1024	0:1619a6b826d7	1029	pppWriteOverEthernet(int pd, const u_char *s, int n)
Hello1024	0:1619a6b826d7	1030	{
Hello1024	0:1619a6b826d7	1031	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	1032	struct pbuf *pb;
Hello1024	0:1619a6b826d7	1033
Hello1024	0:1619a6b826d7	1034	/* skip address & flags */
Hello1024	0:1619a6b826d7	1035	s += 2;
Hello1024	0:1619a6b826d7	1036	n -= 2;
Hello1024	0:1619a6b826d7	1037
Hello1024	0:1619a6b826d7	1038	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
Hello1024	0:1619a6b826d7	1039	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
Hello1024	0:1619a6b826d7	1040	if(!pb) {
Hello1024	0:1619a6b826d7	1041	LINK_STATS_INC(link.memerr);
Hello1024	0:1619a6b826d7	1042	LINK_STATS_INC(link.proterr);
Hello1024	0:1619a6b826d7	1043	snmp_inc_ifoutdiscards(&pc->netif);
Hello1024	0:1619a6b826d7	1044	return PPPERR_ALLOC;
Hello1024	0:1619a6b826d7	1045	}
Hello1024	0:1619a6b826d7	1046
Hello1024	0:1619a6b826d7	1047	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
Hello1024	0:1619a6b826d7	1048
Hello1024	0:1619a6b826d7	1049	pc->lastXMit = sys_jiffies();
Hello1024	0:1619a6b826d7	1050
Hello1024	0:1619a6b826d7	1051	MEMCPY(pb->payload, s, n);
Hello1024	0:1619a6b826d7	1052
Hello1024	0:1619a6b826d7	1053	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
Hello1024	0:1619a6b826d7	1054	LINK_STATS_INC(link.err);
Hello1024	0:1619a6b826d7	1055	snmp_inc_ifoutdiscards(&pc->netif);
Hello1024	0:1619a6b826d7	1056	return PPPERR_DEVICE;
Hello1024	0:1619a6b826d7	1057	}
Hello1024	0:1619a6b826d7	1058
Hello1024	0:1619a6b826d7	1059	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
Hello1024	0:1619a6b826d7	1060	snmp_inc_ifoutucastpkts(&pc->netif);
Hello1024	0:1619a6b826d7	1061	LINK_STATS_INC(link.xmit);
Hello1024	0:1619a6b826d7	1062	return PPPERR_NONE;
Hello1024	0:1619a6b826d7	1063	}
Hello1024	0:1619a6b826d7	1064	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	1065
Hello1024	0:1619a6b826d7	1066	/*
Hello1024	0:1619a6b826d7	1067	* Write n characters to a ppp link.
Hello1024	0:1619a6b826d7	1068	* RETURN: >= 0 Number of characters written
Hello1024	0:1619a6b826d7	1069	* -1 Failed to write to device
Hello1024	0:1619a6b826d7	1070	*/
Hello1024	0:1619a6b826d7	1071	int
Hello1024	0:1619a6b826d7	1072	pppWrite(int pd, const u_char *s, int n)
Hello1024	0:1619a6b826d7	1073	{
Hello1024	0:1619a6b826d7	1074	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	1075	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	1076	u_char c;
Hello1024	0:1619a6b826d7	1077	u_int fcsOut;
Hello1024	0:1619a6b826d7	1078	struct pbuf headMB, tailMB;
Hello1024	0:1619a6b826d7	1079	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	1080
Hello1024	0:1619a6b826d7	1081	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	1082	if(pc->ethif) {
Hello1024	0:1619a6b826d7	1083	return pppWriteOverEthernet(pd, s, n);
Hello1024	0:1619a6b826d7	1084	}
Hello1024	0:1619a6b826d7	1085	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	1086
Hello1024	0:1619a6b826d7	1087	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	1088	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
Hello1024	0:1619a6b826d7	1089	if (headMB == NULL) {
Hello1024	0:1619a6b826d7	1090	LINK_STATS_INC(link.memerr);
Hello1024	0:1619a6b826d7	1091	LINK_STATS_INC(link.proterr);
Hello1024	0:1619a6b826d7	1092	snmp_inc_ifoutdiscards(&pc->netif);
Hello1024	0:1619a6b826d7	1093	return PPPERR_ALLOC;
Hello1024	0:1619a6b826d7	1094	}
Hello1024	0:1619a6b826d7	1095
Hello1024	0:1619a6b826d7	1096	tailMB = headMB;
Hello1024	0:1619a6b826d7	1097
Hello1024	0:1619a6b826d7	1098	/* If the link has been idle, we'll send a fresh flag character to
Hello1024	0:1619a6b826d7	1099	* flush any noise. */
Hello1024	0:1619a6b826d7	1100	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
Hello1024	0:1619a6b826d7	1101	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
Hello1024	0:1619a6b826d7	1102	}
Hello1024	0:1619a6b826d7	1103	pc->lastXMit = sys_jiffies();
Hello1024	0:1619a6b826d7	1104
Hello1024	0:1619a6b826d7	1105	fcsOut = PPP_INITFCS;
Hello1024	0:1619a6b826d7	1106	/* Load output buffer. */
Hello1024	0:1619a6b826d7	1107	while (n-- > 0) {
Hello1024	0:1619a6b826d7	1108	c = *s++;
Hello1024	0:1619a6b826d7	1109
Hello1024	0:1619a6b826d7	1110	/* Update FCS before checking for special characters. */
Hello1024	0:1619a6b826d7	1111	fcsOut = PPP_FCS(fcsOut, c);
Hello1024	0:1619a6b826d7	1112
Hello1024	0:1619a6b826d7	1113	/* Copy to output buffer escaping special characters. */
Hello1024	0:1619a6b826d7	1114	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Hello1024	0:1619a6b826d7	1115	}
Hello1024	0:1619a6b826d7	1116
Hello1024	0:1619a6b826d7	1117	/* Add FCS and trailing flag. */
Hello1024	0:1619a6b826d7	1118	c = ~fcsOut & 0xFF;
Hello1024	0:1619a6b826d7	1119	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Hello1024	0:1619a6b826d7	1120	c = (~fcsOut >> 8) & 0xFF;
Hello1024	0:1619a6b826d7	1121	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Hello1024	0:1619a6b826d7	1122	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
Hello1024	0:1619a6b826d7	1123
Hello1024	0:1619a6b826d7	1124	/* If we failed to complete the packet, throw it away.
Hello1024	0:1619a6b826d7	1125	* Otherwise send it. */
Hello1024	0:1619a6b826d7	1126	if (!tailMB) {
Hello1024	0:1619a6b826d7	1127	PPPDEBUG(LOG_WARNING,
Hello1024	0:1619a6b826d7	1128	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
Hello1024	0:1619a6b826d7	1129	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
Hello1024	0:1619a6b826d7	1130	pbuf_free(headMB);
Hello1024	0:1619a6b826d7	1131	LINK_STATS_INC(link.memerr);
Hello1024	0:1619a6b826d7	1132	LINK_STATS_INC(link.proterr);
Hello1024	0:1619a6b826d7	1133	snmp_inc_ifoutdiscards(&pc->netif);
Hello1024	0:1619a6b826d7	1134	return PPPERR_ALLOC;
Hello1024	0:1619a6b826d7	1135	}
Hello1024	0:1619a6b826d7	1136
Hello1024	0:1619a6b826d7	1137	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
Hello1024	0:1619a6b826d7	1138	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
Hello1024	0:1619a6b826d7	1139	nPut(pc, headMB);
Hello1024	0:1619a6b826d7	1140	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	1141
Hello1024	0:1619a6b826d7	1142	return PPPERR_NONE;
Hello1024	0:1619a6b826d7	1143	}
Hello1024	0:1619a6b826d7	1144
Hello1024	0:1619a6b826d7	1145	/*
Hello1024	0:1619a6b826d7	1146	* ppp_send_config - configure the transmit characteristics of
Hello1024	0:1619a6b826d7	1147	* the ppp interface.
Hello1024	0:1619a6b826d7	1148	*/
Hello1024	0:1619a6b826d7	1149	void
Hello1024	0:1619a6b826d7	1150	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
Hello1024	0:1619a6b826d7	1151	{
Hello1024	0:1619a6b826d7	1152	PPPControl *pc = &pppControl[unit];
Hello1024	0:1619a6b826d7	1153	int i;
Hello1024	0:1619a6b826d7	1154
Hello1024	0:1619a6b826d7	1155	pc->mtu = mtu;
Hello1024	0:1619a6b826d7	1156	pc->pcomp = pcomp;
Hello1024	0:1619a6b826d7	1157	pc->accomp = accomp;
Hello1024	0:1619a6b826d7	1158
Hello1024	0:1619a6b826d7	1159	/* Load the ACCM bits for the 32 control codes. */
Hello1024	0:1619a6b826d7	1160	for (i = 0; i < 32/8; i++) {
Hello1024	0:1619a6b826d7	1161	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
Hello1024	0:1619a6b826d7	1162	}
Hello1024	0:1619a6b826d7	1163	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
Hello1024	0:1619a6b826d7	1164	unit,
Hello1024	0:1619a6b826d7	1165	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
Hello1024	0:1619a6b826d7	1166	}
Hello1024	0:1619a6b826d7	1167
Hello1024	0:1619a6b826d7	1168
Hello1024	0:1619a6b826d7	1169	/*
Hello1024	0:1619a6b826d7	1170	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
Hello1024	0:1619a6b826d7	1171	*/
Hello1024	0:1619a6b826d7	1172	void
Hello1024	0:1619a6b826d7	1173	ppp_set_xaccm(int unit, ext_accm *accm)
Hello1024	0:1619a6b826d7	1174	{
Hello1024	0:1619a6b826d7	1175	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
Hello1024	0:1619a6b826d7	1176	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
Hello1024	0:1619a6b826d7	1177	unit,
Hello1024	0:1619a6b826d7	1178	pppControl[unit].outACCM[0],
Hello1024	0:1619a6b826d7	1179	pppControl[unit].outACCM[1],
Hello1024	0:1619a6b826d7	1180	pppControl[unit].outACCM[2],
Hello1024	0:1619a6b826d7	1181	pppControl[unit].outACCM[3]));
Hello1024	0:1619a6b826d7	1182	}
Hello1024	0:1619a6b826d7	1183
Hello1024	0:1619a6b826d7	1184
Hello1024	0:1619a6b826d7	1185	/*
Hello1024	0:1619a6b826d7	1186	* ppp_recv_config - configure the receive-side characteristics of
Hello1024	0:1619a6b826d7	1187	* the ppp interface.
Hello1024	0:1619a6b826d7	1188	*/
Hello1024	0:1619a6b826d7	1189	void
Hello1024	0:1619a6b826d7	1190	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
Hello1024	0:1619a6b826d7	1191	{
Hello1024	0:1619a6b826d7	1192	PPPControl *pc = &pppControl[unit];
Hello1024	0:1619a6b826d7	1193	int i;
Hello1024	0:1619a6b826d7	1194	SYS_ARCH_DECL_PROTECT(lev);
Hello1024	0:1619a6b826d7	1195
Hello1024	0:1619a6b826d7	1196	LWIP_UNUSED_ARG(accomp);
Hello1024	0:1619a6b826d7	1197	LWIP_UNUSED_ARG(pcomp);
Hello1024	0:1619a6b826d7	1198	LWIP_UNUSED_ARG(mru);
Hello1024	0:1619a6b826d7	1199
Hello1024	0:1619a6b826d7	1200	/* Load the ACCM bits for the 32 control codes. */
Hello1024	0:1619a6b826d7	1201	SYS_ARCH_PROTECT(lev);
Hello1024	0:1619a6b826d7	1202	for (i = 0; i < 32 / 8; i++) {
Hello1024	0:1619a6b826d7	1203	/* @todo: does this work? ext_accm has been modified from pppd! */
Hello1024	0:1619a6b826d7	1204	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
Hello1024	0:1619a6b826d7	1205	}
Hello1024	0:1619a6b826d7	1206	SYS_ARCH_UNPROTECT(lev);
Hello1024	0:1619a6b826d7	1207	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
Hello1024	0:1619a6b826d7	1208	unit,
Hello1024	0:1619a6b826d7	1209	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
Hello1024	0:1619a6b826d7	1210	}
Hello1024	0:1619a6b826d7	1211
Hello1024	0:1619a6b826d7	1212	#if 0
Hello1024	0:1619a6b826d7	1213	/*
Hello1024	0:1619a6b826d7	1214	* ccp_test - ask kernel whether a given compression method
Hello1024	0:1619a6b826d7	1215	* is acceptable for use. Returns 1 if the method and parameters
Hello1024	0:1619a6b826d7	1216	* are OK, 0 if the method is known but the parameters are not OK
Hello1024	0:1619a6b826d7	1217	* (e.g. code size should be reduced), or -1 if the method is unknown.
Hello1024	0:1619a6b826d7	1218	*/
Hello1024	0:1619a6b826d7	1219	int
Hello1024	0:1619a6b826d7	1220	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
Hello1024	0:1619a6b826d7	1221	{
Hello1024	0:1619a6b826d7	1222	return 0; /* XXX Currently no compression. */
Hello1024	0:1619a6b826d7	1223	}
Hello1024	0:1619a6b826d7	1224
Hello1024	0:1619a6b826d7	1225	/*
Hello1024	0:1619a6b826d7	1226	* ccp_flags_set - inform kernel about the current state of CCP.
Hello1024	0:1619a6b826d7	1227	*/
Hello1024	0:1619a6b826d7	1228	void
Hello1024	0:1619a6b826d7	1229	ccp_flags_set(int unit, int isopen, int isup)
Hello1024	0:1619a6b826d7	1230	{
Hello1024	0:1619a6b826d7	1231	/* XXX */
Hello1024	0:1619a6b826d7	1232	}
Hello1024	0:1619a6b826d7	1233
Hello1024	0:1619a6b826d7	1234	/*
Hello1024	0:1619a6b826d7	1235	* ccp_fatal_error - returns 1 if decompression was disabled as a
Hello1024	0:1619a6b826d7	1236	* result of an error detected after decompression of a packet,
Hello1024	0:1619a6b826d7	1237	* 0 otherwise. This is necessary because of patent nonsense.
Hello1024	0:1619a6b826d7	1238	*/
Hello1024	0:1619a6b826d7	1239	int
Hello1024	0:1619a6b826d7	1240	ccp_fatal_error(int unit)
Hello1024	0:1619a6b826d7	1241	{
Hello1024	0:1619a6b826d7	1242	/* XXX */
Hello1024	0:1619a6b826d7	1243	return 0;
Hello1024	0:1619a6b826d7	1244	}
Hello1024	0:1619a6b826d7	1245	#endif
Hello1024	0:1619a6b826d7	1246
Hello1024	0:1619a6b826d7	1247	/*
Hello1024	0:1619a6b826d7	1248	* get_idle_time - return how long the link has been idle.
Hello1024	0:1619a6b826d7	1249	*/
Hello1024	0:1619a6b826d7	1250	int
Hello1024	0:1619a6b826d7	1251	get_idle_time(int u, struct ppp_idle *ip)
Hello1024	0:1619a6b826d7	1252	{
Hello1024	0:1619a6b826d7	1253	/* XXX */
Hello1024	0:1619a6b826d7	1254	LWIP_UNUSED_ARG(u);
Hello1024	0:1619a6b826d7	1255	LWIP_UNUSED_ARG(ip);
Hello1024	0:1619a6b826d7	1256
Hello1024	0:1619a6b826d7	1257	return 0;
Hello1024	0:1619a6b826d7	1258	}
Hello1024	0:1619a6b826d7	1259
Hello1024	0:1619a6b826d7	1260
Hello1024	0:1619a6b826d7	1261	/*
Hello1024	0:1619a6b826d7	1262	* Return user specified netmask, modified by any mask we might determine
Hello1024	0:1619a6b826d7	1263	* for address `addr' (in network byte order).
Hello1024	0:1619a6b826d7	1264	* Here we scan through the system's list of interfaces, looking for
Hello1024	0:1619a6b826d7	1265	* any non-point-to-point interfaces which might appear to be on the same
Hello1024	0:1619a6b826d7	1266	* network as `addr'. If we find any, we OR in their netmask to the
Hello1024	0:1619a6b826d7	1267	* user-specified netmask.
Hello1024	0:1619a6b826d7	1268	*/
Hello1024	0:1619a6b826d7	1269	u32_t
Hello1024	0:1619a6b826d7	1270	GetMask(u32_t addr)
Hello1024	0:1619a6b826d7	1271	{
Hello1024	0:1619a6b826d7	1272	u32_t mask, nmask;
Hello1024	0:1619a6b826d7	1273
Hello1024	0:1619a6b826d7	1274	htonl(addr);
Hello1024	0:1619a6b826d7	1275	if (IP_CLASSA(addr)) { /* determine network mask for address class */
Hello1024	0:1619a6b826d7	1276	nmask = IP_CLASSA_NET;
Hello1024	0:1619a6b826d7	1277	} else if (IP_CLASSB(addr)) {
Hello1024	0:1619a6b826d7	1278	nmask = IP_CLASSB_NET;
Hello1024	0:1619a6b826d7	1279	} else {
Hello1024	0:1619a6b826d7	1280	nmask = IP_CLASSC_NET;
Hello1024	0:1619a6b826d7	1281	}
Hello1024	0:1619a6b826d7	1282
Hello1024	0:1619a6b826d7	1283	/* class D nets are disallowed by bad_ip_adrs */
Hello1024	0:1619a6b826d7	1284	mask = subnetMask \| htonl(nmask);
Hello1024	0:1619a6b826d7	1285
Hello1024	0:1619a6b826d7	1286	/* XXX
Hello1024	0:1619a6b826d7	1287	* Scan through the system's network interfaces.
Hello1024	0:1619a6b826d7	1288	* Get each netmask and OR them into our mask.
Hello1024	0:1619a6b826d7	1289	*/
Hello1024	0:1619a6b826d7	1290
Hello1024	0:1619a6b826d7	1291	return mask;
Hello1024	0:1619a6b826d7	1292	}
Hello1024	0:1619a6b826d7	1293
Hello1024	0:1619a6b826d7	1294	/*
Hello1024	0:1619a6b826d7	1295	* sifvjcomp - config tcp header compression
Hello1024	0:1619a6b826d7	1296	*/
Hello1024	0:1619a6b826d7	1297	int
Hello1024	0:1619a6b826d7	1298	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
Hello1024	0:1619a6b826d7	1299	{
Hello1024	0:1619a6b826d7	1300	#if PPPOS_SUPPORT && VJ_SUPPORT
Hello1024	0:1619a6b826d7	1301	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	1302
Hello1024	0:1619a6b826d7	1303	pc->vjEnabled = vjcomp;
Hello1024	0:1619a6b826d7	1304	pc->vjComp.compressSlot = cidcomp;
Hello1024	0:1619a6b826d7	1305	pc->vjComp.maxSlotIndex = maxcid;
Hello1024	0:1619a6b826d7	1306	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
Hello1024	0:1619a6b826d7	1307	vjcomp, cidcomp, maxcid));
Hello1024	0:1619a6b826d7	1308	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
Hello1024	0:1619a6b826d7	1309	LWIP_UNUSED_ARG(pd);
Hello1024	0:1619a6b826d7	1310	LWIP_UNUSED_ARG(vjcomp);
Hello1024	0:1619a6b826d7	1311	LWIP_UNUSED_ARG(cidcomp);
Hello1024	0:1619a6b826d7	1312	LWIP_UNUSED_ARG(maxcid);
Hello1024	0:1619a6b826d7	1313	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
Hello1024	0:1619a6b826d7	1314
Hello1024	0:1619a6b826d7	1315	return 0;
Hello1024	0:1619a6b826d7	1316	}
Hello1024	0:1619a6b826d7	1317
Hello1024	0:1619a6b826d7	1318	/*
Hello1024	0:1619a6b826d7	1319	* pppifNetifInit - netif init callback
Hello1024	0:1619a6b826d7	1320	*/
Hello1024	0:1619a6b826d7	1321	static err_t
Hello1024	0:1619a6b826d7	1322	pppifNetifInit(struct netif *netif)
Hello1024	0:1619a6b826d7	1323	{
Hello1024	0:1619a6b826d7	1324	netif->name[0] = 'p';
Hello1024	0:1619a6b826d7	1325	netif->name[1] = 'p';
Hello1024	0:1619a6b826d7	1326	netif->output = pppifOutput;
Hello1024	0:1619a6b826d7	1327	netif->mtu = pppMTU((int)(size_t)netif->state);
Hello1024	0:1619a6b826d7	1328	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
Hello1024	0:1619a6b826d7	1329	#if LWIP_NETIF_HOSTNAME
Hello1024	0:1619a6b826d7	1330	/* @todo: Initialize interface hostname */
Hello1024	0:1619a6b826d7	1331	/* netif_set_hostname(netif, "lwip"); */
Hello1024	0:1619a6b826d7	1332	#endif /* LWIP_NETIF_HOSTNAME */
Hello1024	0:1619a6b826d7	1333	return ERR_OK;
Hello1024	0:1619a6b826d7	1334	}
Hello1024	0:1619a6b826d7	1335
Hello1024	0:1619a6b826d7	1336
Hello1024	0:1619a6b826d7	1337	/*
Hello1024	0:1619a6b826d7	1338	* sifup - Config the interface up and enable IP packets to pass.
Hello1024	0:1619a6b826d7	1339	*/
Hello1024	0:1619a6b826d7	1340	int
Hello1024	0:1619a6b826d7	1341	sifup(int pd)
Hello1024	0:1619a6b826d7	1342	{
Hello1024	0:1619a6b826d7	1343	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	1344	int st = 1;
Hello1024	0:1619a6b826d7	1345
Hello1024	0:1619a6b826d7	1346	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Hello1024	0:1619a6b826d7	1347	st = 0;
Hello1024	0:1619a6b826d7	1348	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
Hello1024	0:1619a6b826d7	1349	} else {
Hello1024	0:1619a6b826d7	1350	netif_remove(&pc->netif);
Hello1024	0:1619a6b826d7	1351	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
Hello1024	0:1619a6b826d7	1352	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
Hello1024	0:1619a6b826d7	1353	netif_set_up(&pc->netif);
Hello1024	0:1619a6b826d7	1354	pc->if_up = 1;
Hello1024	0:1619a6b826d7	1355	pc->errCode = PPPERR_NONE;
Hello1024	0:1619a6b826d7	1356
Hello1024	0:1619a6b826d7	1357	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
Hello1024	0:1619a6b826d7	1358	if (pc->linkStatusCB) {
Hello1024	0:1619a6b826d7	1359	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
Hello1024	0:1619a6b826d7	1360	}
Hello1024	0:1619a6b826d7	1361	} else {
Hello1024	0:1619a6b826d7	1362	st = 0;
Hello1024	0:1619a6b826d7	1363	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
Hello1024	0:1619a6b826d7	1364	}
Hello1024	0:1619a6b826d7	1365	}
Hello1024	0:1619a6b826d7	1366
Hello1024	0:1619a6b826d7	1367	return st;
Hello1024	0:1619a6b826d7	1368	}
Hello1024	0:1619a6b826d7	1369
Hello1024	0:1619a6b826d7	1370	/*
Hello1024	0:1619a6b826d7	1371	* sifnpmode - Set the mode for handling packets for a given NP.
Hello1024	0:1619a6b826d7	1372	*/
Hello1024	0:1619a6b826d7	1373	int
Hello1024	0:1619a6b826d7	1374	sifnpmode(int u, int proto, enum NPmode mode)
Hello1024	0:1619a6b826d7	1375	{
Hello1024	0:1619a6b826d7	1376	LWIP_UNUSED_ARG(u);
Hello1024	0:1619a6b826d7	1377	LWIP_UNUSED_ARG(proto);
Hello1024	0:1619a6b826d7	1378	LWIP_UNUSED_ARG(mode);
Hello1024	0:1619a6b826d7	1379	return 0;
Hello1024	0:1619a6b826d7	1380	}
Hello1024	0:1619a6b826d7	1381
Hello1024	0:1619a6b826d7	1382	/*
Hello1024	0:1619a6b826d7	1383	* sifdown - Config the interface down and disable IP.
Hello1024	0:1619a6b826d7	1384	*/
Hello1024	0:1619a6b826d7	1385	int
Hello1024	0:1619a6b826d7	1386	sifdown(int pd)
Hello1024	0:1619a6b826d7	1387	{
Hello1024	0:1619a6b826d7	1388	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	1389	int st = 1;
Hello1024	0:1619a6b826d7	1390
Hello1024	0:1619a6b826d7	1391	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Hello1024	0:1619a6b826d7	1392	st = 0;
Hello1024	0:1619a6b826d7	1393	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
Hello1024	0:1619a6b826d7	1394	} else {
Hello1024	0:1619a6b826d7	1395	pc->if_up = 0;
Hello1024	0:1619a6b826d7	1396	/* make sure the netif status callback is called */
Hello1024	0:1619a6b826d7	1397	netif_set_down(&pc->netif);
Hello1024	0:1619a6b826d7	1398	netif_remove(&pc->netif);
Hello1024	0:1619a6b826d7	1399	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
Hello1024	0:1619a6b826d7	1400	if (pc->linkStatusCB) {
Hello1024	0:1619a6b826d7	1401	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
Hello1024	0:1619a6b826d7	1402	}
Hello1024	0:1619a6b826d7	1403	}
Hello1024	0:1619a6b826d7	1404	return st;
Hello1024	0:1619a6b826d7	1405	}
Hello1024	0:1619a6b826d7	1406
Hello1024	0:1619a6b826d7	1407	/**
Hello1024	0:1619a6b826d7	1408	* sifaddr - Config the interface IP addresses and netmask.
Hello1024	0:1619a6b826d7	1409	* @param pd Interface unit ???
Hello1024	0:1619a6b826d7	1410	* @param o Our IP address ???
Hello1024	0:1619a6b826d7	1411	* @param h His IP address ???
Hello1024	0:1619a6b826d7	1412	* @param m IP subnet mask ???
Hello1024	0:1619a6b826d7	1413	* @param ns1 Primary DNS
Hello1024	0:1619a6b826d7	1414	* @param ns2 Secondary DNS
Hello1024	0:1619a6b826d7	1415	*/
Hello1024	0:1619a6b826d7	1416	int
Hello1024	0:1619a6b826d7	1417	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
Hello1024	0:1619a6b826d7	1418	{
Hello1024	0:1619a6b826d7	1419	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	1420	int st = 1;
Hello1024	0:1619a6b826d7	1421
Hello1024	0:1619a6b826d7	1422	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Hello1024	0:1619a6b826d7	1423	st = 0;
Hello1024	0:1619a6b826d7	1424	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
Hello1024	0:1619a6b826d7	1425	} else {
Hello1024	0:1619a6b826d7	1426	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
Hello1024	0:1619a6b826d7	1427	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
Hello1024	0:1619a6b826d7	1428	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
Hello1024	0:1619a6b826d7	1429	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
Hello1024	0:1619a6b826d7	1430	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
Hello1024	0:1619a6b826d7	1431	}
Hello1024	0:1619a6b826d7	1432	return st;
Hello1024	0:1619a6b826d7	1433	}
Hello1024	0:1619a6b826d7	1434
Hello1024	0:1619a6b826d7	1435	/**
Hello1024	0:1619a6b826d7	1436	* cifaddr - Clear the interface IP addresses, and delete routes
Hello1024	0:1619a6b826d7	1437	* through the interface if possible.
Hello1024	0:1619a6b826d7	1438	* @param pd Interface unit ???
Hello1024	0:1619a6b826d7	1439	* @param o Our IP address ???
Hello1024	0:1619a6b826d7	1440	* @param h IP broadcast address ???
Hello1024	0:1619a6b826d7	1441	*/
Hello1024	0:1619a6b826d7	1442	int
Hello1024	0:1619a6b826d7	1443	cifaddr( int pd, u32_t o, u32_t h)
Hello1024	0:1619a6b826d7	1444	{
Hello1024	0:1619a6b826d7	1445	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	1446	int st = 1;
Hello1024	0:1619a6b826d7	1447
Hello1024	0:1619a6b826d7	1448	LWIP_UNUSED_ARG(o);
Hello1024	0:1619a6b826d7	1449	LWIP_UNUSED_ARG(h);
Hello1024	0:1619a6b826d7	1450	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Hello1024	0:1619a6b826d7	1451	st = 0;
Hello1024	0:1619a6b826d7	1452	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
Hello1024	0:1619a6b826d7	1453	} else {
Hello1024	0:1619a6b826d7	1454	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
Hello1024	0:1619a6b826d7	1455	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
Hello1024	0:1619a6b826d7	1456	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
Hello1024	0:1619a6b826d7	1457	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
Hello1024	0:1619a6b826d7	1458	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
Hello1024	0:1619a6b826d7	1459	}
Hello1024	0:1619a6b826d7	1460	return st;
Hello1024	0:1619a6b826d7	1461	}
Hello1024	0:1619a6b826d7	1462
Hello1024	0:1619a6b826d7	1463	/*
Hello1024	0:1619a6b826d7	1464	* sifdefaultroute - assign a default route through the address given.
Hello1024	0:1619a6b826d7	1465	*/
Hello1024	0:1619a6b826d7	1466	int
Hello1024	0:1619a6b826d7	1467	sifdefaultroute(int pd, u32_t l, u32_t g)
Hello1024	0:1619a6b826d7	1468	{
Hello1024	0:1619a6b826d7	1469	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	1470	int st = 1;
Hello1024	0:1619a6b826d7	1471
Hello1024	0:1619a6b826d7	1472	LWIP_UNUSED_ARG(l);
Hello1024	0:1619a6b826d7	1473	LWIP_UNUSED_ARG(g);
Hello1024	0:1619a6b826d7	1474
Hello1024	0:1619a6b826d7	1475	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Hello1024	0:1619a6b826d7	1476	st = 0;
Hello1024	0:1619a6b826d7	1477	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
Hello1024	0:1619a6b826d7	1478	} else {
Hello1024	0:1619a6b826d7	1479	netif_set_default(&pc->netif);
Hello1024	0:1619a6b826d7	1480	}
Hello1024	0:1619a6b826d7	1481
Hello1024	0:1619a6b826d7	1482	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
Hello1024	0:1619a6b826d7	1483
Hello1024	0:1619a6b826d7	1484	return st;
Hello1024	0:1619a6b826d7	1485	}
Hello1024	0:1619a6b826d7	1486
Hello1024	0:1619a6b826d7	1487	/*
Hello1024	0:1619a6b826d7	1488	* cifdefaultroute - delete a default route through the address given.
Hello1024	0:1619a6b826d7	1489	*/
Hello1024	0:1619a6b826d7	1490	int
Hello1024	0:1619a6b826d7	1491	cifdefaultroute(int pd, u32_t l, u32_t g)
Hello1024	0:1619a6b826d7	1492	{
Hello1024	0:1619a6b826d7	1493	PPPControl *pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	1494	int st = 1;
Hello1024	0:1619a6b826d7	1495
Hello1024	0:1619a6b826d7	1496	LWIP_UNUSED_ARG(l);
Hello1024	0:1619a6b826d7	1497	LWIP_UNUSED_ARG(g);
Hello1024	0:1619a6b826d7	1498
Hello1024	0:1619a6b826d7	1499	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Hello1024	0:1619a6b826d7	1500	st = 0;
Hello1024	0:1619a6b826d7	1501	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
Hello1024	0:1619a6b826d7	1502	} else {
Hello1024	0:1619a6b826d7	1503	netif_set_default(NULL);
Hello1024	0:1619a6b826d7	1504	}
Hello1024	0:1619a6b826d7	1505
Hello1024	0:1619a6b826d7	1506	return st;
Hello1024	0:1619a6b826d7	1507	}
Hello1024	0:1619a6b826d7	1508
Hello1024	0:1619a6b826d7	1509	/**********************************/
Hello1024	0:1619a6b826d7	1510	/* LOCAL FUNCTION DEFINITIONS */
Hello1024	0:1619a6b826d7	1511	/**********************************/
Hello1024	0:1619a6b826d7	1512
Hello1024	0:1619a6b826d7	1513	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
Hello1024	0:1619a6b826d7	1514	/* The main PPP process function. This implements the state machine according
Hello1024	0:1619a6b826d7	1515	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
Hello1024	0:1619a6b826d7	1516	static void
Hello1024	0:1619a6b826d7	1517	pppInputThread(void *arg)
Hello1024	0:1619a6b826d7	1518	{
Hello1024	0:1619a6b826d7	1519	int count;
Hello1024	0:1619a6b826d7	1520	PPPControlRx *pcrx = arg;
Hello1024	0:1619a6b826d7	1521
Hello1024	0:1619a6b826d7	1522	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
Hello1024	0:1619a6b826d7	1523	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
Hello1024	0:1619a6b826d7	1524	if(count > 0) {
Hello1024	0:1619a6b826d7	1525	pppInProc(pcrx, pcrx->rxbuf, count);
Hello1024	0:1619a6b826d7	1526	} else {
Hello1024	0:1619a6b826d7	1527	/* nothing received, give other tasks a chance to run */
Hello1024	0:1619a6b826d7	1528	sys_msleep(1);
Hello1024	0:1619a6b826d7	1529	}
Hello1024	0:1619a6b826d7	1530	}
Hello1024	0:1619a6b826d7	1531	}
Hello1024	0:1619a6b826d7	1532	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
Hello1024	0:1619a6b826d7	1533
Hello1024	0:1619a6b826d7	1534	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	1535
Hello1024	0:1619a6b826d7	1536	void
Hello1024	0:1619a6b826d7	1537	pppOverEthernetInitFailed(int pd)
Hello1024	0:1619a6b826d7	1538	{
Hello1024	0:1619a6b826d7	1539	PPPControl* pc;
Hello1024	0:1619a6b826d7	1540
Hello1024	0:1619a6b826d7	1541	pppHup(pd);
Hello1024	0:1619a6b826d7	1542	pppStop(pd);
Hello1024	0:1619a6b826d7	1543
Hello1024	0:1619a6b826d7	1544	pc = &pppControl[pd];
Hello1024	0:1619a6b826d7	1545	pppoe_destroy(&pc->netif);
Hello1024	0:1619a6b826d7	1546	pc->openFlag = 0;
Hello1024	0:1619a6b826d7	1547
Hello1024	0:1619a6b826d7	1548	if(pc->linkStatusCB) {
Hello1024	0:1619a6b826d7	1549	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
Hello1024	0:1619a6b826d7	1550	}
Hello1024	0:1619a6b826d7	1551	}
Hello1024	0:1619a6b826d7	1552
Hello1024	0:1619a6b826d7	1553	static void
Hello1024	0:1619a6b826d7	1554	pppOverEthernetLinkStatusCB(int pd, int up)
Hello1024	0:1619a6b826d7	1555	{
Hello1024	0:1619a6b826d7	1556	if(up) {
Hello1024	0:1619a6b826d7	1557	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
Hello1024	0:1619a6b826d7	1558	pppStart(pd);
Hello1024	0:1619a6b826d7	1559	} else {
Hello1024	0:1619a6b826d7	1560	pppOverEthernetInitFailed(pd);
Hello1024	0:1619a6b826d7	1561	}
Hello1024	0:1619a6b826d7	1562	}
Hello1024	0:1619a6b826d7	1563	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	1564
Hello1024	0:1619a6b826d7	1565	struct pbuf *
Hello1024	0:1619a6b826d7	1566	pppSingleBuf(struct pbuf *p)
Hello1024	0:1619a6b826d7	1567	{
Hello1024	0:1619a6b826d7	1568	struct pbuf q, b;
Hello1024	0:1619a6b826d7	1569	u_char *pl;
Hello1024	0:1619a6b826d7	1570
Hello1024	0:1619a6b826d7	1571	if(p->tot_len == p->len) {
Hello1024	0:1619a6b826d7	1572	return p;
Hello1024	0:1619a6b826d7	1573	}
Hello1024	0:1619a6b826d7	1574
Hello1024	0:1619a6b826d7	1575	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
Hello1024	0:1619a6b826d7	1576	if(!q) {
Hello1024	0:1619a6b826d7	1577	PPPDEBUG(LOG_ERR,
Hello1024	0:1619a6b826d7	1578	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
Hello1024	0:1619a6b826d7	1579	return p; /* live dangerously */
Hello1024	0:1619a6b826d7	1580	}
Hello1024	0:1619a6b826d7	1581
Hello1024	0:1619a6b826d7	1582	for(b = p, pl = (u_char *) q->payload; b != NULL; b = b->next) {
Hello1024	0:1619a6b826d7	1583	MEMCPY(pl, b->payload, b->len);
Hello1024	0:1619a6b826d7	1584	pl += b->len;
Hello1024	0:1619a6b826d7	1585	}
Hello1024	0:1619a6b826d7	1586
Hello1024	0:1619a6b826d7	1587	pbuf_free(p);
Hello1024	0:1619a6b826d7	1588
Hello1024	0:1619a6b826d7	1589	return q;
Hello1024	0:1619a6b826d7	1590	}
Hello1024	0:1619a6b826d7	1591
Hello1024	0:1619a6b826d7	1592	struct pppInputHeader {
Hello1024	0:1619a6b826d7	1593	int unit;
Hello1024	0:1619a6b826d7	1594	u16_t proto;
Hello1024	0:1619a6b826d7	1595	};
Hello1024	0:1619a6b826d7	1596
Hello1024	0:1619a6b826d7	1597	/*
Hello1024	0:1619a6b826d7	1598	* Pass the processed input packet to the appropriate handler.
Hello1024	0:1619a6b826d7	1599	* This function and all handlers run in the context of the tcpip_thread
Hello1024	0:1619a6b826d7	1600	*/
Hello1024	0:1619a6b826d7	1601	static void
Hello1024	0:1619a6b826d7	1602	pppInput(void *arg)
Hello1024	0:1619a6b826d7	1603	{
Hello1024	0:1619a6b826d7	1604	struct pbuf nb = (struct pbuf )arg;
Hello1024	0:1619a6b826d7	1605	u16_t protocol;
Hello1024	0:1619a6b826d7	1606	int pd;
Hello1024	0:1619a6b826d7	1607
Hello1024	0:1619a6b826d7	1608	pd = ((struct pppInputHeader *)nb->payload)->unit;
Hello1024	0:1619a6b826d7	1609	protocol = ((struct pppInputHeader *)nb->payload)->proto;
Hello1024	0:1619a6b826d7	1610
Hello1024	0:1619a6b826d7	1611	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
Hello1024	0:1619a6b826d7	1612	LWIP_ASSERT("pbuf_header failed\n", 0);
Hello1024	0:1619a6b826d7	1613	goto drop;
Hello1024	0:1619a6b826d7	1614	}
Hello1024	0:1619a6b826d7	1615
Hello1024	0:1619a6b826d7	1616	LINK_STATS_INC(link.recv);
Hello1024	0:1619a6b826d7	1617	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
Hello1024	0:1619a6b826d7	1618	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
Hello1024	0:1619a6b826d7	1619
Hello1024	0:1619a6b826d7	1620	/*
Hello1024	0:1619a6b826d7	1621	* Toss all non-LCP packets unless LCP is OPEN.
Hello1024	0:1619a6b826d7	1622	* Until we get past the authentication phase, toss all packets
Hello1024	0:1619a6b826d7	1623	* except LCP, LQR and authentication packets.
Hello1024	0:1619a6b826d7	1624	*/
Hello1024	0:1619a6b826d7	1625	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
Hello1024	0:1619a6b826d7	1626	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
Hello1024	0:1619a6b826d7	1627	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
Hello1024	0:1619a6b826d7	1628	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
Hello1024	0:1619a6b826d7	1629	goto drop;
Hello1024	0:1619a6b826d7	1630	}
Hello1024	0:1619a6b826d7	1631	}
Hello1024	0:1619a6b826d7	1632
Hello1024	0:1619a6b826d7	1633	switch(protocol) {
Hello1024	0:1619a6b826d7	1634	case PPP_VJC_COMP: /* VJ compressed TCP */
Hello1024	0:1619a6b826d7	1635	#if PPPOS_SUPPORT && VJ_SUPPORT
Hello1024	0:1619a6b826d7	1636	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
Hello1024	0:1619a6b826d7	1637	/*
Hello1024	0:1619a6b826d7	1638	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
Hello1024	0:1619a6b826d7	1639	* pass the result to IP.
Hello1024	0:1619a6b826d7	1640	*/
Hello1024	0:1619a6b826d7	1641	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
Hello1024	0:1619a6b826d7	1642	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
Hello1024	0:1619a6b826d7	1643	return;
Hello1024	0:1619a6b826d7	1644	}
Hello1024	0:1619a6b826d7	1645	/* Something's wrong so drop it. */
Hello1024	0:1619a6b826d7	1646	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
Hello1024	0:1619a6b826d7	1647	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
Hello1024	0:1619a6b826d7	1648	/* No handler for this protocol so drop the packet. */
Hello1024	0:1619a6b826d7	1649	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
Hello1024	0:1619a6b826d7	1650	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
Hello1024	0:1619a6b826d7	1651	break;
Hello1024	0:1619a6b826d7	1652
Hello1024	0:1619a6b826d7	1653	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
Hello1024	0:1619a6b826d7	1654	#if PPPOS_SUPPORT && VJ_SUPPORT
Hello1024	0:1619a6b826d7	1655	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
Hello1024	0:1619a6b826d7	1656	/*
Hello1024	0:1619a6b826d7	1657	* Process the TCP/IP header for VJ header compression and then pass
Hello1024	0:1619a6b826d7	1658	* the packet to IP.
Hello1024	0:1619a6b826d7	1659	*/
Hello1024	0:1619a6b826d7	1660	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
Hello1024	0:1619a6b826d7	1661	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
Hello1024	0:1619a6b826d7	1662	return;
Hello1024	0:1619a6b826d7	1663	}
Hello1024	0:1619a6b826d7	1664	/* Something's wrong so drop it. */
Hello1024	0:1619a6b826d7	1665	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
Hello1024	0:1619a6b826d7	1666	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
Hello1024	0:1619a6b826d7	1667	/* No handler for this protocol so drop the packet. */
Hello1024	0:1619a6b826d7	1668	PPPDEBUG(LOG_INFO,
Hello1024	0:1619a6b826d7	1669	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
Hello1024	0:1619a6b826d7	1670	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
Hello1024	0:1619a6b826d7	1671	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
Hello1024	0:1619a6b826d7	1672	break;
Hello1024	0:1619a6b826d7	1673
Hello1024	0:1619a6b826d7	1674	case PPP_IP: /* Internet Protocol */
Hello1024	0:1619a6b826d7	1675	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
Hello1024	0:1619a6b826d7	1676	if (pppControl[pd].netif.input) {
Hello1024	0:1619a6b826d7	1677	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
Hello1024	0:1619a6b826d7	1678	return;
Hello1024	0:1619a6b826d7	1679	}
Hello1024	0:1619a6b826d7	1680	break;
Hello1024	0:1619a6b826d7	1681
Hello1024	0:1619a6b826d7	1682	default: {
Hello1024	0:1619a6b826d7	1683	struct protent *protp;
Hello1024	0:1619a6b826d7	1684	int i;
Hello1024	0:1619a6b826d7	1685
Hello1024	0:1619a6b826d7	1686	/*
Hello1024	0:1619a6b826d7	1687	* Upcall the proper protocol input routine.
Hello1024	0:1619a6b826d7	1688	*/
Hello1024	0:1619a6b826d7	1689	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
Hello1024	0:1619a6b826d7	1690	if (protp->protocol == protocol && protp->enabled_flag) {
Hello1024	0:1619a6b826d7	1691	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
Hello1024	0:1619a6b826d7	1692	nb = pppSingleBuf(nb);
Hello1024	0:1619a6b826d7	1693	(protp->input)(pd, (u_char )nb->payload, nb->len);
Hello1024	0:1619a6b826d7	1694	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
Hello1024	0:1619a6b826d7	1695	goto out;
Hello1024	0:1619a6b826d7	1696	}
Hello1024	0:1619a6b826d7	1697	}
Hello1024	0:1619a6b826d7	1698
Hello1024	0:1619a6b826d7	1699	/* No handler for this protocol so reject the packet. */
Hello1024	0:1619a6b826d7	1700	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
Hello1024	0:1619a6b826d7	1701	if (pbuf_header(nb, sizeof(protocol))) {
Hello1024	0:1619a6b826d7	1702	LWIP_ASSERT("pbuf_header failed\n", 0);
Hello1024	0:1619a6b826d7	1703	goto drop;
Hello1024	0:1619a6b826d7	1704	}
Hello1024	0:1619a6b826d7	1705	#if BYTE_ORDER == LITTLE_ENDIAN
Hello1024	0:1619a6b826d7	1706	protocol = htons(protocol);
Hello1024	0:1619a6b826d7	1707	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
Hello1024	0:1619a6b826d7	1708	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
Hello1024	0:1619a6b826d7	1709	lcp_sprotrej(pd, (u_char *)nb->payload, nb->len);
Hello1024	0:1619a6b826d7	1710	}
Hello1024	0:1619a6b826d7	1711	break;
Hello1024	0:1619a6b826d7	1712	}
Hello1024	0:1619a6b826d7	1713
Hello1024	0:1619a6b826d7	1714	drop:
Hello1024	0:1619a6b826d7	1715	LINK_STATS_INC(link.drop);
Hello1024	0:1619a6b826d7	1716	snmp_inc_ifindiscards(&pppControl[pd].netif);
Hello1024	0:1619a6b826d7	1717
Hello1024	0:1619a6b826d7	1718	out:
Hello1024	0:1619a6b826d7	1719	pbuf_free(nb);
Hello1024	0:1619a6b826d7	1720	return;
Hello1024	0:1619a6b826d7	1721	}
Hello1024	0:1619a6b826d7	1722
Hello1024	0:1619a6b826d7	1723	#if PPPOS_SUPPORT
Hello1024	0:1619a6b826d7	1724	/*
Hello1024	0:1619a6b826d7	1725	* Drop the input packet.
Hello1024	0:1619a6b826d7	1726	*/
Hello1024	0:1619a6b826d7	1727	static void
Hello1024	0:1619a6b826d7	1728	pppDrop(PPPControlRx *pcrx)
Hello1024	0:1619a6b826d7	1729	{
Hello1024	0:1619a6b826d7	1730	if (pcrx->inHead != NULL) {
Hello1024	0:1619a6b826d7	1731	#if 0
Hello1024	0:1619a6b826d7	1732	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
Hello1024	0:1619a6b826d7	1733	#endif
Hello1024	0:1619a6b826d7	1734	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
Hello1024	0:1619a6b826d7	1735	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
Hello1024	0:1619a6b826d7	1736	pbuf_free(pcrx->inTail);
Hello1024	0:1619a6b826d7	1737	}
Hello1024	0:1619a6b826d7	1738	pbuf_free(pcrx->inHead);
Hello1024	0:1619a6b826d7	1739	pcrx->inHead = NULL;
Hello1024	0:1619a6b826d7	1740	pcrx->inTail = NULL;
Hello1024	0:1619a6b826d7	1741	}
Hello1024	0:1619a6b826d7	1742	#if VJ_SUPPORT
Hello1024	0:1619a6b826d7	1743	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
Hello1024	0:1619a6b826d7	1744	#endif /* VJ_SUPPORT */
Hello1024	0:1619a6b826d7	1745
Hello1024	0:1619a6b826d7	1746	LINK_STATS_INC(link.drop);
Hello1024	0:1619a6b826d7	1747	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
Hello1024	0:1619a6b826d7	1748	}
Hello1024	0:1619a6b826d7	1749
Hello1024	0:1619a6b826d7	1750	/** Pass received raw characters to PPPoS to be decoded. This function is
Hello1024	0:1619a6b826d7	1751	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
Hello1024	0:1619a6b826d7	1752	*
Hello1024	0:1619a6b826d7	1753	* @param pd PPP descriptor index, returned by pppOpen()
Hello1024	0:1619a6b826d7	1754	* @param data received data
Hello1024	0:1619a6b826d7	1755	* @param len length of received data
Hello1024	0:1619a6b826d7	1756	*/
Hello1024	0:1619a6b826d7	1757	void
Hello1024	0:1619a6b826d7	1758	pppos_input(int pd, u_char* data, int len)
Hello1024	0:1619a6b826d7	1759	{
Hello1024	0:1619a6b826d7	1760	pppInProc(&pppControl[pd].rx, data, len);
Hello1024	0:1619a6b826d7	1761	}
Hello1024	0:1619a6b826d7	1762
Hello1024	0:1619a6b826d7	1763	/**
Hello1024	0:1619a6b826d7	1764	* Process a received octet string.
Hello1024	0:1619a6b826d7	1765	*/
Hello1024	0:1619a6b826d7	1766	static void
Hello1024	0:1619a6b826d7	1767	pppInProc(PPPControlRx pcrx, u_char s, int l)
Hello1024	0:1619a6b826d7	1768	{
Hello1024	0:1619a6b826d7	1769	struct pbuf *nextNBuf;
Hello1024	0:1619a6b826d7	1770	u_char curChar;
Hello1024	0:1619a6b826d7	1771	u_char escaped;
Hello1024	0:1619a6b826d7	1772	SYS_ARCH_DECL_PROTECT(lev);
Hello1024	0:1619a6b826d7	1773
Hello1024	0:1619a6b826d7	1774	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
Hello1024	0:1619a6b826d7	1775	while (l-- > 0) {
Hello1024	0:1619a6b826d7	1776	curChar = *s++;
Hello1024	0:1619a6b826d7	1777
Hello1024	0:1619a6b826d7	1778	SYS_ARCH_PROTECT(lev);
Hello1024	0:1619a6b826d7	1779	escaped = ESCAPE_P(pcrx->inACCM, curChar);
Hello1024	0:1619a6b826d7	1780	SYS_ARCH_UNPROTECT(lev);
Hello1024	0:1619a6b826d7	1781	/* Handle special characters. */
Hello1024	0:1619a6b826d7	1782	if (escaped) {
Hello1024	0:1619a6b826d7	1783	/* Check for escape sequences. */
Hello1024	0:1619a6b826d7	1784	/* XXX Note that this does not handle an escaped 0x5d character which
Hello1024	0:1619a6b826d7	1785	* would appear as an escape character. Since this is an ASCII ']'
Hello1024	0:1619a6b826d7	1786	* and there is no reason that I know of to escape it, I won't complicate
Hello1024	0:1619a6b826d7	1787	* the code to handle this case. GLL */
Hello1024	0:1619a6b826d7	1788	if (curChar == PPP_ESCAPE) {
Hello1024	0:1619a6b826d7	1789	pcrx->inEscaped = 1;
Hello1024	0:1619a6b826d7	1790	/* Check for the flag character. */
Hello1024	0:1619a6b826d7	1791	} else if (curChar == PPP_FLAG) {
Hello1024	0:1619a6b826d7	1792	/* If this is just an extra flag character, ignore it. */
Hello1024	0:1619a6b826d7	1793	if (pcrx->inState <= PDADDRESS) {
Hello1024	0:1619a6b826d7	1794	/* ignore it */;
Hello1024	0:1619a6b826d7	1795	/* If we haven't received the packet header, drop what has come in. */
Hello1024	0:1619a6b826d7	1796	} else if (pcrx->inState < PDDATA) {
Hello1024	0:1619a6b826d7	1797	PPPDEBUG(LOG_WARNING,
Hello1024	0:1619a6b826d7	1798	("pppInProc[%d]: Dropping incomplete packet %d\n",
Hello1024	0:1619a6b826d7	1799	pcrx->pd, pcrx->inState));
Hello1024	0:1619a6b826d7	1800	LINK_STATS_INC(link.lenerr);
Hello1024	0:1619a6b826d7	1801	pppDrop(pcrx);
Hello1024	0:1619a6b826d7	1802	/* If the fcs is invalid, drop the packet. */
Hello1024	0:1619a6b826d7	1803	} else if (pcrx->inFCS != PPP_GOODFCS) {
Hello1024	0:1619a6b826d7	1804	PPPDEBUG(LOG_INFO,
Hello1024	0:1619a6b826d7	1805	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
Hello1024	0:1619a6b826d7	1806	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
Hello1024	0:1619a6b826d7	1807	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
Hello1024	0:1619a6b826d7	1808	LINK_STATS_INC(link.chkerr);
Hello1024	0:1619a6b826d7	1809	pppDrop(pcrx);
Hello1024	0:1619a6b826d7	1810	/* Otherwise it's a good packet so pass it on. */
Hello1024	0:1619a6b826d7	1811	} else {
Hello1024	0:1619a6b826d7	1812	/* Trim off the checksum. */
Hello1024	0:1619a6b826d7	1813	if(pcrx->inTail->len >= 2) {
Hello1024	0:1619a6b826d7	1814	pcrx->inTail->len -= 2;
Hello1024	0:1619a6b826d7	1815
Hello1024	0:1619a6b826d7	1816	pcrx->inTail->tot_len = pcrx->inTail->len;
Hello1024	0:1619a6b826d7	1817	if (pcrx->inTail != pcrx->inHead) {
Hello1024	0:1619a6b826d7	1818	pbuf_cat(pcrx->inHead, pcrx->inTail);
Hello1024	0:1619a6b826d7	1819	}
Hello1024	0:1619a6b826d7	1820	} else {
Hello1024	0:1619a6b826d7	1821	pcrx->inTail->tot_len = pcrx->inTail->len;
Hello1024	0:1619a6b826d7	1822	if (pcrx->inTail != pcrx->inHead) {
Hello1024	0:1619a6b826d7	1823	pbuf_cat(pcrx->inHead, pcrx->inTail);
Hello1024	0:1619a6b826d7	1824	}
Hello1024	0:1619a6b826d7	1825
Hello1024	0:1619a6b826d7	1826	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
Hello1024	0:1619a6b826d7	1827	}
Hello1024	0:1619a6b826d7	1828
Hello1024	0:1619a6b826d7	1829	/* Dispatch the packet thereby consuming it. */
Hello1024	0:1619a6b826d7	1830	#if PPP_INPROC_MULTITHREADED
Hello1024	0:1619a6b826d7	1831	if(tcpip_callback_with_block(pppInput, pcrx->inHead, 0) != ERR_OK) {
Hello1024	0:1619a6b826d7	1832	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
Hello1024	0:1619a6b826d7	1833	pbuf_free(pcrx->inHead);
Hello1024	0:1619a6b826d7	1834	LINK_STATS_INC(link.drop);
Hello1024	0:1619a6b826d7	1835	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
Hello1024	0:1619a6b826d7	1836	}
Hello1024	0:1619a6b826d7	1837	#else /* PPP_INPROC_MULTITHREADED */
Hello1024	0:1619a6b826d7	1838	pppInput(pcrx->inHead);
Hello1024	0:1619a6b826d7	1839	#endif /* PPP_INPROC_MULTITHREADED */
Hello1024	0:1619a6b826d7	1840	pcrx->inHead = NULL;
Hello1024	0:1619a6b826d7	1841	pcrx->inTail = NULL;
Hello1024	0:1619a6b826d7	1842	}
Hello1024	0:1619a6b826d7	1843
Hello1024	0:1619a6b826d7	1844	/* Prepare for a new packet. */
Hello1024	0:1619a6b826d7	1845	pcrx->inFCS = PPP_INITFCS;
Hello1024	0:1619a6b826d7	1846	pcrx->inState = PDADDRESS;
Hello1024	0:1619a6b826d7	1847	pcrx->inEscaped = 0;
Hello1024	0:1619a6b826d7	1848	/* Other characters are usually control characters that may have
Hello1024	0:1619a6b826d7	1849	* been inserted by the physical layer so here we just drop them. */
Hello1024	0:1619a6b826d7	1850	} else {
Hello1024	0:1619a6b826d7	1851	PPPDEBUG(LOG_WARNING,
Hello1024	0:1619a6b826d7	1852	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
Hello1024	0:1619a6b826d7	1853	}
Hello1024	0:1619a6b826d7	1854	/* Process other characters. */
Hello1024	0:1619a6b826d7	1855	} else {
Hello1024	0:1619a6b826d7	1856	/* Unencode escaped characters. */
Hello1024	0:1619a6b826d7	1857	if (pcrx->inEscaped) {
Hello1024	0:1619a6b826d7	1858	pcrx->inEscaped = 0;
Hello1024	0:1619a6b826d7	1859	curChar ^= PPP_TRANS;
Hello1024	0:1619a6b826d7	1860	}
Hello1024	0:1619a6b826d7	1861
Hello1024	0:1619a6b826d7	1862	/* Process character relative to current state. */
Hello1024	0:1619a6b826d7	1863	switch(pcrx->inState) {
Hello1024	0:1619a6b826d7	1864	case PDIDLE: /* Idle state - waiting. */
Hello1024	0:1619a6b826d7	1865	/* Drop the character if it's not 0xff
Hello1024	0:1619a6b826d7	1866	* we would have processed a flag character above. */
Hello1024	0:1619a6b826d7	1867	if (curChar != PPP_ALLSTATIONS) {
Hello1024	0:1619a6b826d7	1868	break;
Hello1024	0:1619a6b826d7	1869	}
Hello1024	0:1619a6b826d7	1870
Hello1024	0:1619a6b826d7	1871	/* Fall through */
Hello1024	0:1619a6b826d7	1872	case PDSTART: /* Process start flag. */
Hello1024	0:1619a6b826d7	1873	/* Prepare for a new packet. */
Hello1024	0:1619a6b826d7	1874	pcrx->inFCS = PPP_INITFCS;
Hello1024	0:1619a6b826d7	1875
Hello1024	0:1619a6b826d7	1876	/* Fall through */
Hello1024	0:1619a6b826d7	1877	case PDADDRESS: /* Process address field. */
Hello1024	0:1619a6b826d7	1878	if (curChar == PPP_ALLSTATIONS) {
Hello1024	0:1619a6b826d7	1879	pcrx->inState = PDCONTROL;
Hello1024	0:1619a6b826d7	1880	break;
Hello1024	0:1619a6b826d7	1881	}
Hello1024	0:1619a6b826d7	1882	/* Else assume compressed address and control fields so
Hello1024	0:1619a6b826d7	1883	* fall through to get the protocol... */
Hello1024	0:1619a6b826d7	1884	case PDCONTROL: /* Process control field. */
Hello1024	0:1619a6b826d7	1885	/* If we don't get a valid control code, restart. */
Hello1024	0:1619a6b826d7	1886	if (curChar == PPP_UI) {
Hello1024	0:1619a6b826d7	1887	pcrx->inState = PDPROTOCOL1;
Hello1024	0:1619a6b826d7	1888	break;
Hello1024	0:1619a6b826d7	1889	}
Hello1024	0:1619a6b826d7	1890	#if 0
Hello1024	0:1619a6b826d7	1891	else {
Hello1024	0:1619a6b826d7	1892	PPPDEBUG(LOG_WARNING,
Hello1024	0:1619a6b826d7	1893	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
Hello1024	0:1619a6b826d7	1894	pcrx->inState = PDSTART;
Hello1024	0:1619a6b826d7	1895	}
Hello1024	0:1619a6b826d7	1896	#endif
Hello1024	0:1619a6b826d7	1897	case PDPROTOCOL1: /* Process protocol field 1. */
Hello1024	0:1619a6b826d7	1898	/* If the lower bit is set, this is the end of the protocol
Hello1024	0:1619a6b826d7	1899	* field. */
Hello1024	0:1619a6b826d7	1900	if (curChar & 1) {
Hello1024	0:1619a6b826d7	1901	pcrx->inProtocol = curChar;
Hello1024	0:1619a6b826d7	1902	pcrx->inState = PDDATA;
Hello1024	0:1619a6b826d7	1903	} else {
Hello1024	0:1619a6b826d7	1904	pcrx->inProtocol = (u_int)curChar << 8;
Hello1024	0:1619a6b826d7	1905	pcrx->inState = PDPROTOCOL2;
Hello1024	0:1619a6b826d7	1906	}
Hello1024	0:1619a6b826d7	1907	break;
Hello1024	0:1619a6b826d7	1908	case PDPROTOCOL2: /* Process protocol field 2. */
Hello1024	0:1619a6b826d7	1909	pcrx->inProtocol \|= curChar;
Hello1024	0:1619a6b826d7	1910	pcrx->inState = PDDATA;
Hello1024	0:1619a6b826d7	1911	break;
Hello1024	0:1619a6b826d7	1912	case PDDATA: /* Process data byte. */
Hello1024	0:1619a6b826d7	1913	/* Make space to receive processed data. */
Hello1024	0:1619a6b826d7	1914	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
Hello1024	0:1619a6b826d7	1915	if(pcrx->inTail) {
Hello1024	0:1619a6b826d7	1916	pcrx->inTail->tot_len = pcrx->inTail->len;
Hello1024	0:1619a6b826d7	1917	if (pcrx->inTail != pcrx->inHead) {
Hello1024	0:1619a6b826d7	1918	pbuf_cat(pcrx->inHead, pcrx->inTail);
Hello1024	0:1619a6b826d7	1919	}
Hello1024	0:1619a6b826d7	1920	}
Hello1024	0:1619a6b826d7	1921	/* If we haven't started a packet, we need a packet header. */
Hello1024	0:1619a6b826d7	1922	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
Hello1024	0:1619a6b826d7	1923	if (nextNBuf == NULL) {
Hello1024	0:1619a6b826d7	1924	/* No free buffers. Drop the input packet and let the
Hello1024	0:1619a6b826d7	1925	* higher layers deal with it. Continue processing
Hello1024	0:1619a6b826d7	1926	* the received pbuf chain in case a new packet starts. */
Hello1024	0:1619a6b826d7	1927	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
Hello1024	0:1619a6b826d7	1928	LINK_STATS_INC(link.memerr);
Hello1024	0:1619a6b826d7	1929	pppDrop(pcrx);
Hello1024	0:1619a6b826d7	1930	pcrx->inState = PDSTART; /* Wait for flag sequence. */
Hello1024	0:1619a6b826d7	1931	break;
Hello1024	0:1619a6b826d7	1932	}
Hello1024	0:1619a6b826d7	1933	if (pcrx->inHead == NULL) {
Hello1024	0:1619a6b826d7	1934	struct pppInputHeader pih = (struct pppInputHeader )nextNBuf->payload;
Hello1024	0:1619a6b826d7	1935
Hello1024	0:1619a6b826d7	1936	pih->unit = pcrx->pd;
Hello1024	0:1619a6b826d7	1937	pih->proto = pcrx->inProtocol;
Hello1024	0:1619a6b826d7	1938
Hello1024	0:1619a6b826d7	1939	nextNBuf->len += sizeof(*pih);
Hello1024	0:1619a6b826d7	1940
Hello1024	0:1619a6b826d7	1941	pcrx->inHead = nextNBuf;
Hello1024	0:1619a6b826d7	1942	}
Hello1024	0:1619a6b826d7	1943	pcrx->inTail = nextNBuf;
Hello1024	0:1619a6b826d7	1944	}
Hello1024	0:1619a6b826d7	1945	/* Load character into buffer. */
Hello1024	0:1619a6b826d7	1946	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
Hello1024	0:1619a6b826d7	1947	break;
Hello1024	0:1619a6b826d7	1948	}
Hello1024	0:1619a6b826d7	1949
Hello1024	0:1619a6b826d7	1950	/* update the frame check sequence number. */
Hello1024	0:1619a6b826d7	1951	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
Hello1024	0:1619a6b826d7	1952	}
Hello1024	0:1619a6b826d7	1953	} /* while (l-- > 0), all bytes processed */
Hello1024	0:1619a6b826d7	1954
Hello1024	0:1619a6b826d7	1955	avRandomize();
Hello1024	0:1619a6b826d7	1956	}
Hello1024	0:1619a6b826d7	1957	#endif /* PPPOS_SUPPORT */
Hello1024	0:1619a6b826d7	1958
Hello1024	0:1619a6b826d7	1959	#if PPPOE_SUPPORT
Hello1024	0:1619a6b826d7	1960	void
Hello1024	0:1619a6b826d7	1961	pppInProcOverEthernet(int pd, struct pbuf *pb)
Hello1024	0:1619a6b826d7	1962	{
Hello1024	0:1619a6b826d7	1963	struct pppInputHeader *pih;
Hello1024	0:1619a6b826d7	1964	u16_t inProtocol;
Hello1024	0:1619a6b826d7	1965
Hello1024	0:1619a6b826d7	1966	if(pb->len < sizeof(inProtocol)) {
Hello1024	0:1619a6b826d7	1967	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
Hello1024	0:1619a6b826d7	1968	goto drop;
Hello1024	0:1619a6b826d7	1969	}
Hello1024	0:1619a6b826d7	1970
Hello1024	0:1619a6b826d7	1971	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
Hello1024	0:1619a6b826d7	1972
Hello1024	0:1619a6b826d7	1973	/* make room for pppInputHeader - should not fail */
Hello1024	0:1619a6b826d7	1974	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
Hello1024	0:1619a6b826d7	1975	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
Hello1024	0:1619a6b826d7	1976	goto drop;
Hello1024	0:1619a6b826d7	1977	}
Hello1024	0:1619a6b826d7	1978
Hello1024	0:1619a6b826d7	1979	pih = pb->payload;
Hello1024	0:1619a6b826d7	1980
Hello1024	0:1619a6b826d7	1981	pih->unit = pd;
Hello1024	0:1619a6b826d7	1982	pih->proto = inProtocol;
Hello1024	0:1619a6b826d7	1983
Hello1024	0:1619a6b826d7	1984	/* Dispatch the packet thereby consuming it. */
Hello1024	0:1619a6b826d7	1985	pppInput(pb);
Hello1024	0:1619a6b826d7	1986	return;
Hello1024	0:1619a6b826d7	1987
Hello1024	0:1619a6b826d7	1988	drop:
Hello1024	0:1619a6b826d7	1989	LINK_STATS_INC(link.drop);
Hello1024	0:1619a6b826d7	1990	snmp_inc_ifindiscards(&pppControl[pd].netif);
Hello1024	0:1619a6b826d7	1991	pbuf_free(pb);
Hello1024	0:1619a6b826d7	1992	return;
Hello1024	0:1619a6b826d7	1993	}
Hello1024	0:1619a6b826d7	1994	#endif /* PPPOE_SUPPORT */
Hello1024	0:1619a6b826d7	1995
Hello1024	0:1619a6b826d7	1996	#if LWIP_NETIF_STATUS_CALLBACK
Hello1024	0:1619a6b826d7	1997	/** Set the status callback of a PPP's netif
Hello1024	0:1619a6b826d7	1998	*
Hello1024	0:1619a6b826d7	1999	* @param pd The PPP descriptor returned by pppOpen()
Hello1024	0:1619a6b826d7	2000	* @param status_callback pointer to the status callback function
Hello1024	0:1619a6b826d7	2001	*
Hello1024	0:1619a6b826d7	2002	* @see netif_set_status_callback
Hello1024	0:1619a6b826d7	2003	*/
Hello1024	0:1619a6b826d7	2004	void
Hello1024	0:1619a6b826d7	2005	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
Hello1024	0:1619a6b826d7	2006	{
Hello1024	0:1619a6b826d7	2007	netif_set_status_callback(&pppControl[pd].netif, status_callback);
Hello1024	0:1619a6b826d7	2008	}
Hello1024	0:1619a6b826d7	2009	#endif /* LWIP_NETIF_STATUS_CALLBACK */
Hello1024	0:1619a6b826d7	2010
Hello1024	0:1619a6b826d7	2011	#if LWIP_NETIF_LINK_CALLBACK
Hello1024	0:1619a6b826d7	2012	/** Set the link callback of a PPP's netif
Hello1024	0:1619a6b826d7	2013	*
Hello1024	0:1619a6b826d7	2014	* @param pd The PPP descriptor returned by pppOpen()
Hello1024	0:1619a6b826d7	2015	* @param link_callback pointer to the link callback function
Hello1024	0:1619a6b826d7	2016	*
Hello1024	0:1619a6b826d7	2017	* @see netif_set_link_callback
Hello1024	0:1619a6b826d7	2018	*/
Hello1024	0:1619a6b826d7	2019	void
Hello1024	0:1619a6b826d7	2020	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
Hello1024	0:1619a6b826d7	2021	{
Hello1024	0:1619a6b826d7	2022	netif_set_link_callback(&pppControl[pd].netif, link_callback);
Hello1024	0:1619a6b826d7	2023	}
Hello1024	0:1619a6b826d7	2024	#endif /* LWIP_NETIF_LINK_CALLBACK */
Hello1024	0:1619a6b826d7	2025
Hello1024	0:1619a6b826d7	2026	#endif /* PPP_SUPPORT */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	21 Nov 2011
Imports:	10
Forks:	1
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

NetServicesProxy/lwip/netif/ppp/ppp.c@0:1619a6b826d7, 2011-11-21 (annotated)

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