NetServicesMod - Modified version of NetServices. Fixes an issue w…

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Modified version of NetServices. Fixes an issue where connections failed should the HTTP response status line be received in a packet on its own prior to any further headers. Changes are made to the HTTPClient.cpp file's readHeaders method.

lwip/netif/ppp/ppp.c@0:ec559500a63f, 2011-04-08 (annotated)

Committer:: andrewbonney
Date:: Fri Apr 08 14:39:41 2011 +0000
Revision:: 0:ec559500a63f

Who changed what in which revision?

User	Revision	Line number	New contents of line
andrewbonney	0:ec559500a63f	1	/*****************************************************************************
andrewbonney	0:ec559500a63f	2	* ppp.c - Network Point to Point Protocol program file.
andrewbonney	0:ec559500a63f	3	*
andrewbonney	0:ec559500a63f	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
andrewbonney	0:ec559500a63f	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
andrewbonney	0:ec559500a63f	6	*
andrewbonney	0:ec559500a63f	7	* The authors hereby grant permission to use, copy, modify, distribute,
andrewbonney	0:ec559500a63f	8	* and license this software and its documentation for any purpose, provided
andrewbonney	0:ec559500a63f	9	* that existing copyright notices are retained in all copies and that this
andrewbonney	0:ec559500a63f	10	* notice and the following disclaimer are included verbatim in any
andrewbonney	0:ec559500a63f	11	* distributions. No written agreement, license, or royalty fee is required
andrewbonney	0:ec559500a63f	12	* for any of the authorized uses.
andrewbonney	0:ec559500a63f	13	*
andrewbonney	0:ec559500a63f	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
andrewbonney	0:ec559500a63f	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
andrewbonney	0:ec559500a63f	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
andrewbonney	0:ec559500a63f	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
andrewbonney	0:ec559500a63f	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
andrewbonney	0:ec559500a63f	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
andrewbonney	0:ec559500a63f	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
andrewbonney	0:ec559500a63f	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
andrewbonney	0:ec559500a63f	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
andrewbonney	0:ec559500a63f	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
andrewbonney	0:ec559500a63f	24	*
andrewbonney	0:ec559500a63f	25	******************************************************************************
andrewbonney	0:ec559500a63f	26	* REVISION HISTORY
andrewbonney	0:ec559500a63f	27	*
andrewbonney	0:ec559500a63f	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
andrewbonney	0:ec559500a63f	29	* Ported to lwIP.
andrewbonney	0:ec559500a63f	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
andrewbonney	0:ec559500a63f	31	* Original.
andrewbonney	0:ec559500a63f	32	*****************************************************************************/
andrewbonney	0:ec559500a63f	33
andrewbonney	0:ec559500a63f	34	/*
andrewbonney	0:ec559500a63f	35	* ppp_defs.h - PPP definitions.
andrewbonney	0:ec559500a63f	36	*
andrewbonney	0:ec559500a63f	37	* if_pppvar.h - private structures and declarations for PPP.
andrewbonney	0:ec559500a63f	38	*
andrewbonney	0:ec559500a63f	39	* Copyright (c) 1994 The Australian National University.
andrewbonney	0:ec559500a63f	40	* All rights reserved.
andrewbonney	0:ec559500a63f	41	*
andrewbonney	0:ec559500a63f	42	* Permission to use, copy, modify, and distribute this software and its
andrewbonney	0:ec559500a63f	43	* documentation is hereby granted, provided that the above copyright
andrewbonney	0:ec559500a63f	44	* notice appears in all copies. This software is provided without any
andrewbonney	0:ec559500a63f	45	* warranty, express or implied. The Australian National University
andrewbonney	0:ec559500a63f	46	* makes no representations about the suitability of this software for
andrewbonney	0:ec559500a63f	47	* any purpose.
andrewbonney	0:ec559500a63f	48	*
andrewbonney	0:ec559500a63f	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
andrewbonney	0:ec559500a63f	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
andrewbonney	0:ec559500a63f	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
andrewbonney	0:ec559500a63f	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
andrewbonney	0:ec559500a63f	53	* OF SUCH DAMAGE.
andrewbonney	0:ec559500a63f	54	*
andrewbonney	0:ec559500a63f	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
andrewbonney	0:ec559500a63f	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
andrewbonney	0:ec559500a63f	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
andrewbonney	0:ec559500a63f	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
andrewbonney	0:ec559500a63f	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
andrewbonney	0:ec559500a63f	60	* OR MODIFICATIONS.
andrewbonney	0:ec559500a63f	61	*/
andrewbonney	0:ec559500a63f	62
andrewbonney	0:ec559500a63f	63	/*
andrewbonney	0:ec559500a63f	64	* if_ppp.h - Point-to-Point Protocol definitions.
andrewbonney	0:ec559500a63f	65	*
andrewbonney	0:ec559500a63f	66	* Copyright (c) 1989 Carnegie Mellon University.
andrewbonney	0:ec559500a63f	67	* All rights reserved.
andrewbonney	0:ec559500a63f	68	*
andrewbonney	0:ec559500a63f	69	* Redistribution and use in source and binary forms are permitted
andrewbonney	0:ec559500a63f	70	* provided that the above copyright notice and this paragraph are
andrewbonney	0:ec559500a63f	71	* duplicated in all such forms and that any documentation,
andrewbonney	0:ec559500a63f	72	* advertising materials, and other materials related to such
andrewbonney	0:ec559500a63f	73	* distribution and use acknowledge that the software was developed
andrewbonney	0:ec559500a63f	74	* by Carnegie Mellon University. The name of the
andrewbonney	0:ec559500a63f	75	* University may not be used to endorse or promote products derived
andrewbonney	0:ec559500a63f	76	* from this software without specific prior written permission.
andrewbonney	0:ec559500a63f	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
andrewbonney	0:ec559500a63f	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
andrewbonney	0:ec559500a63f	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
andrewbonney	0:ec559500a63f	80	*/
andrewbonney	0:ec559500a63f	81
andrewbonney	0:ec559500a63f	82	#include "lwip/opt.h"
andrewbonney	0:ec559500a63f	83
andrewbonney	0:ec559500a63f	84	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
andrewbonney	0:ec559500a63f	85
andrewbonney	0:ec559500a63f	86	#include "lwip/ip.h" /* for ip_input() */
andrewbonney	0:ec559500a63f	87
andrewbonney	0:ec559500a63f	88	#include "ppp.h"
andrewbonney	0:ec559500a63f	89	#include "pppdebug.h"
andrewbonney	0:ec559500a63f	90
andrewbonney	0:ec559500a63f	91	#include "randm.h"
andrewbonney	0:ec559500a63f	92	#include "fsm.h"
andrewbonney	0:ec559500a63f	93	#if PAP_SUPPORT
andrewbonney	0:ec559500a63f	94	#include "pap.h"
andrewbonney	0:ec559500a63f	95	#endif /* PAP_SUPPORT */
andrewbonney	0:ec559500a63f	96	#if CHAP_SUPPORT
andrewbonney	0:ec559500a63f	97	#include "chap.h"
andrewbonney	0:ec559500a63f	98	#endif /* CHAP_SUPPORT */
andrewbonney	0:ec559500a63f	99	#include "ipcp.h"
andrewbonney	0:ec559500a63f	100	#include "lcp.h"
andrewbonney	0:ec559500a63f	101	#include "magic.h"
andrewbonney	0:ec559500a63f	102	#include "auth.h"
andrewbonney	0:ec559500a63f	103	#if VJ_SUPPORT
andrewbonney	0:ec559500a63f	104	#include "vj.h"
andrewbonney	0:ec559500a63f	105	#endif /* VJ_SUPPORT */
andrewbonney	0:ec559500a63f	106	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	107	#include "netif/ppp_oe.h"
andrewbonney	0:ec559500a63f	108	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	109
andrewbonney	0:ec559500a63f	110	#include "lwip/tcpip.h"
andrewbonney	0:ec559500a63f	111	#include "lwip/api.h"
andrewbonney	0:ec559500a63f	112	#include "lwip/snmp.h"
andrewbonney	0:ec559500a63f	113
andrewbonney	0:ec559500a63f	114	#include <string.h>
andrewbonney	0:ec559500a63f	115
andrewbonney	0:ec559500a63f	116	/*************************/
andrewbonney	0:ec559500a63f	117	/* LOCAL DEFINITIONS */
andrewbonney	0:ec559500a63f	118	/*************************/
andrewbonney	0:ec559500a63f	119
andrewbonney	0:ec559500a63f	120	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
andrewbonney	0:ec559500a63f	121	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
andrewbonney	0:ec559500a63f	122	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
andrewbonney	0:ec559500a63f	123	*/
andrewbonney	0:ec559500a63f	124	#ifndef PPP_INPROC_MULTITHREADED
andrewbonney	0:ec559500a63f	125	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
andrewbonney	0:ec559500a63f	126	#endif
andrewbonney	0:ec559500a63f	127
andrewbonney	0:ec559500a63f	128	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
andrewbonney	0:ec559500a63f	129	* Default is 0: call pppos_input() for received raw characters, charcater
andrewbonney	0:ec559500a63f	130	* reception is up to the port */
andrewbonney	0:ec559500a63f	131	#ifndef PPP_INPROC_OWNTHREAD
andrewbonney	0:ec559500a63f	132	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
andrewbonney	0:ec559500a63f	133	#endif
andrewbonney	0:ec559500a63f	134
andrewbonney	0:ec559500a63f	135	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
andrewbonney	0:ec559500a63f	136	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
andrewbonney	0:ec559500a63f	137	#endif
andrewbonney	0:ec559500a63f	138
andrewbonney	0:ec559500a63f	139	/*
andrewbonney	0:ec559500a63f	140	* The basic PPP frame.
andrewbonney	0:ec559500a63f	141	*/
andrewbonney	0:ec559500a63f	142	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
andrewbonney	0:ec559500a63f	143	#define PPP_CONTROL(p) (((u_char *)(p))[1])
andrewbonney	0:ec559500a63f	144	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
andrewbonney	0:ec559500a63f	145
andrewbonney	0:ec559500a63f	146	/* PPP packet parser states. Current state indicates operation yet to be
andrewbonney	0:ec559500a63f	147	* completed. */
andrewbonney	0:ec559500a63f	148	typedef enum {
andrewbonney	0:ec559500a63f	149	PDIDLE = 0, /* Idle state - waiting. */
andrewbonney	0:ec559500a63f	150	PDSTART, /* Process start flag. */
andrewbonney	0:ec559500a63f	151	PDADDRESS, /* Process address field. */
andrewbonney	0:ec559500a63f	152	PDCONTROL, /* Process control field. */
andrewbonney	0:ec559500a63f	153	PDPROTOCOL1, /* Process protocol field 1. */
andrewbonney	0:ec559500a63f	154	PDPROTOCOL2, /* Process protocol field 2. */
andrewbonney	0:ec559500a63f	155	PDDATA /* Process data byte. */
andrewbonney	0:ec559500a63f	156	} PPPDevStates;
andrewbonney	0:ec559500a63f	157
andrewbonney	0:ec559500a63f	158	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
andrewbonney	0:ec559500a63f	159
andrewbonney	0:ec559500a63f	160	/************************/
andrewbonney	0:ec559500a63f	161	/* LOCAL DATA TYPES */
andrewbonney	0:ec559500a63f	162	/************************/
andrewbonney	0:ec559500a63f	163
andrewbonney	0:ec559500a63f	164	/** RX buffer size: this may be configured smaller! */
andrewbonney	0:ec559500a63f	165	#ifndef PPPOS_RX_BUFSIZE
andrewbonney	0:ec559500a63f	166	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
andrewbonney	0:ec559500a63f	167	#endif
andrewbonney	0:ec559500a63f	168
andrewbonney	0:ec559500a63f	169	typedef struct PPPControlRx_s {
andrewbonney	0:ec559500a63f	170	/** unit number / ppp descriptor */
andrewbonney	0:ec559500a63f	171	int pd;
andrewbonney	0:ec559500a63f	172	/** the rx file descriptor */
andrewbonney	0:ec559500a63f	173	sio_fd_t fd;
andrewbonney	0:ec559500a63f	174	/** receive buffer - encoded data is stored here */
andrewbonney	0:ec559500a63f	175	u_char rxbuf[PPPOS_RX_BUFSIZE];
andrewbonney	0:ec559500a63f	176
andrewbonney	0:ec559500a63f	177	/* The input packet. */
andrewbonney	0:ec559500a63f	178	struct pbuf inHead, inTail;
andrewbonney	0:ec559500a63f	179
andrewbonney	0:ec559500a63f	180	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	181	u16_t inProtocol; /* The input protocol code. */
andrewbonney	0:ec559500a63f	182	u16_t inFCS; /* Input Frame Check Sequence value. */
andrewbonney	0:ec559500a63f	183	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	184	PPPDevStates inState; /* The input process state. */
andrewbonney	0:ec559500a63f	185	char inEscaped; /* Escape next character. */
andrewbonney	0:ec559500a63f	186	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
andrewbonney	0:ec559500a63f	187	} PPPControlRx;
andrewbonney	0:ec559500a63f	188
andrewbonney	0:ec559500a63f	189	/*
andrewbonney	0:ec559500a63f	190	* PPP interface control block.
andrewbonney	0:ec559500a63f	191	*/
andrewbonney	0:ec559500a63f	192	typedef struct PPPControl_s {
andrewbonney	0:ec559500a63f	193	PPPControlRx rx;
andrewbonney	0:ec559500a63f	194	char openFlag; /* True when in use. */
andrewbonney	0:ec559500a63f	195	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	196	struct netif *ethif;
andrewbonney	0:ec559500a63f	197	struct pppoe_softc *pppoe_sc;
andrewbonney	0:ec559500a63f	198	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	199	int if_up; /* True when the interface is up. */
andrewbonney	0:ec559500a63f	200	int errCode; /* Code indicating why interface is down. */
andrewbonney	0:ec559500a63f	201	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	202	sio_fd_t fd; /* File device ID of port. */
andrewbonney	0:ec559500a63f	203	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	204	u16_t mtu; /* Peer's mru */
andrewbonney	0:ec559500a63f	205	int pcomp; /* Does peer accept protocol compression? */
andrewbonney	0:ec559500a63f	206	int accomp; /* Does peer accept addr/ctl compression? */
andrewbonney	0:ec559500a63f	207	u_long lastXMit; /* Time of last transmission. */
andrewbonney	0:ec559500a63f	208	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
andrewbonney	0:ec559500a63f	209	#if PPPOS_SUPPORT && VJ_SUPPORT
andrewbonney	0:ec559500a63f	210	int vjEnabled; /* Flag indicating VJ compression enabled. */
andrewbonney	0:ec559500a63f	211	struct vjcompress vjComp; /* Van Jacobson compression header. */
andrewbonney	0:ec559500a63f	212	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
andrewbonney	0:ec559500a63f	213
andrewbonney	0:ec559500a63f	214	struct netif netif;
andrewbonney	0:ec559500a63f	215
andrewbonney	0:ec559500a63f	216	struct ppp_addrs addrs;
andrewbonney	0:ec559500a63f	217
andrewbonney	0:ec559500a63f	218	void (linkStatusCB)(void ctx, int errCode, void *arg);
andrewbonney	0:ec559500a63f	219	void *linkStatusCtx;
andrewbonney	0:ec559500a63f	220
andrewbonney	0:ec559500a63f	221	} PPPControl;
andrewbonney	0:ec559500a63f	222
andrewbonney	0:ec559500a63f	223
andrewbonney	0:ec559500a63f	224	/*
andrewbonney	0:ec559500a63f	225	* Ioctl definitions.
andrewbonney	0:ec559500a63f	226	*/
andrewbonney	0:ec559500a63f	227
andrewbonney	0:ec559500a63f	228	struct npioctl {
andrewbonney	0:ec559500a63f	229	int protocol; /* PPP procotol, e.g. PPP_IP */
andrewbonney	0:ec559500a63f	230	enum NPmode mode;
andrewbonney	0:ec559500a63f	231	};
andrewbonney	0:ec559500a63f	232
andrewbonney	0:ec559500a63f	233
andrewbonney	0:ec559500a63f	234
andrewbonney	0:ec559500a63f	235	/***********************************/
andrewbonney	0:ec559500a63f	236	/* LOCAL FUNCTION DECLARATIONS */
andrewbonney	0:ec559500a63f	237	/***********************************/
andrewbonney	0:ec559500a63f	238	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	239	#if PPP_INPROC_OWNTHREAD
andrewbonney	0:ec559500a63f	240	static void pppInputThread(void *arg);
andrewbonney	0:ec559500a63f	241	#endif /* PPP_INPROC_OWNTHREAD */
andrewbonney	0:ec559500a63f	242	static void pppDrop(PPPControlRx *pcrx);
andrewbonney	0:ec559500a63f	243	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
andrewbonney	0:ec559500a63f	244	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	245
andrewbonney	0:ec559500a63f	246
andrewbonney	0:ec559500a63f	247	/******************************/
andrewbonney	0:ec559500a63f	248	/* PUBLIC DATA STRUCTURES */
andrewbonney	0:ec559500a63f	249	/******************************/
andrewbonney	0:ec559500a63f	250	u_long subnetMask;
andrewbonney	0:ec559500a63f	251
andrewbonney	0:ec559500a63f	252	static PPPControl pppControl[NUM_PPP] MEM_POSITION; /* The PPP interface control blocks. */
andrewbonney	0:ec559500a63f	253
andrewbonney	0:ec559500a63f	254	/*
andrewbonney	0:ec559500a63f	255	* PPP Data Link Layer "protocol" table.
andrewbonney	0:ec559500a63f	256	* One entry per supported protocol.
andrewbonney	0:ec559500a63f	257	* The last entry must be NULL.
andrewbonney	0:ec559500a63f	258	*/
andrewbonney	0:ec559500a63f	259	struct protent *ppp_protocols[] = {
andrewbonney	0:ec559500a63f	260	&lcp_protent,
andrewbonney	0:ec559500a63f	261	#if PAP_SUPPORT
andrewbonney	0:ec559500a63f	262	&pap_protent,
andrewbonney	0:ec559500a63f	263	#endif /* PAP_SUPPORT */
andrewbonney	0:ec559500a63f	264	#if CHAP_SUPPORT
andrewbonney	0:ec559500a63f	265	&chap_protent,
andrewbonney	0:ec559500a63f	266	#endif /* CHAP_SUPPORT */
andrewbonney	0:ec559500a63f	267	#if CBCP_SUPPORT
andrewbonney	0:ec559500a63f	268	&cbcp_protent,
andrewbonney	0:ec559500a63f	269	#endif /* CBCP_SUPPORT */
andrewbonney	0:ec559500a63f	270	&ipcp_protent,
andrewbonney	0:ec559500a63f	271	#if CCP_SUPPORT
andrewbonney	0:ec559500a63f	272	&ccp_protent,
andrewbonney	0:ec559500a63f	273	#endif /* CCP_SUPPORT */
andrewbonney	0:ec559500a63f	274	NULL
andrewbonney	0:ec559500a63f	275	};
andrewbonney	0:ec559500a63f	276
andrewbonney	0:ec559500a63f	277
andrewbonney	0:ec559500a63f	278	/*
andrewbonney	0:ec559500a63f	279	* Buffers for outgoing packets. This must be accessed only from the appropriate
andrewbonney	0:ec559500a63f	280	* PPP task so that it doesn't need to be protected to avoid collisions.
andrewbonney	0:ec559500a63f	281	*/
andrewbonney	0:ec559500a63f	282	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] MEM_POSITION;
andrewbonney	0:ec559500a63f	283
andrewbonney	0:ec559500a63f	284
andrewbonney	0:ec559500a63f	285	/*****************************/
andrewbonney	0:ec559500a63f	286	/* LOCAL DATA STRUCTURES */
andrewbonney	0:ec559500a63f	287	/*****************************/
andrewbonney	0:ec559500a63f	288
andrewbonney	0:ec559500a63f	289	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	290	/*
andrewbonney	0:ec559500a63f	291	* FCS lookup table as calculated by genfcstab.
andrewbonney	0:ec559500a63f	292	* @todo: smaller, slower implementation for lower memory footprint?
andrewbonney	0:ec559500a63f	293	*/
andrewbonney	0:ec559500a63f	294	static const u_short fcstab[256] = {
andrewbonney	0:ec559500a63f	295	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
andrewbonney	0:ec559500a63f	296	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
andrewbonney	0:ec559500a63f	297	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
andrewbonney	0:ec559500a63f	298	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
andrewbonney	0:ec559500a63f	299	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
andrewbonney	0:ec559500a63f	300	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
andrewbonney	0:ec559500a63f	301	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
andrewbonney	0:ec559500a63f	302	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
andrewbonney	0:ec559500a63f	303	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
andrewbonney	0:ec559500a63f	304	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
andrewbonney	0:ec559500a63f	305	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
andrewbonney	0:ec559500a63f	306	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
andrewbonney	0:ec559500a63f	307	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
andrewbonney	0:ec559500a63f	308	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
andrewbonney	0:ec559500a63f	309	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
andrewbonney	0:ec559500a63f	310	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
andrewbonney	0:ec559500a63f	311	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
andrewbonney	0:ec559500a63f	312	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
andrewbonney	0:ec559500a63f	313	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
andrewbonney	0:ec559500a63f	314	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
andrewbonney	0:ec559500a63f	315	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
andrewbonney	0:ec559500a63f	316	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
andrewbonney	0:ec559500a63f	317	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
andrewbonney	0:ec559500a63f	318	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
andrewbonney	0:ec559500a63f	319	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
andrewbonney	0:ec559500a63f	320	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
andrewbonney	0:ec559500a63f	321	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
andrewbonney	0:ec559500a63f	322	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
andrewbonney	0:ec559500a63f	323	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
andrewbonney	0:ec559500a63f	324	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
andrewbonney	0:ec559500a63f	325	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
andrewbonney	0:ec559500a63f	326	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
andrewbonney	0:ec559500a63f	327	};
andrewbonney	0:ec559500a63f	328
andrewbonney	0:ec559500a63f	329	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
andrewbonney	0:ec559500a63f	330	* to select the specific bit for a character. */
andrewbonney	0:ec559500a63f	331	static u_char pppACCMMask[] = {
andrewbonney	0:ec559500a63f	332	0x01,
andrewbonney	0:ec559500a63f	333	0x02,
andrewbonney	0:ec559500a63f	334	0x04,
andrewbonney	0:ec559500a63f	335	0x08,
andrewbonney	0:ec559500a63f	336	0x10,
andrewbonney	0:ec559500a63f	337	0x20,
andrewbonney	0:ec559500a63f	338	0x40,
andrewbonney	0:ec559500a63f	339	0x80
andrewbonney	0:ec559500a63f	340	};
andrewbonney	0:ec559500a63f	341
andrewbonney	0:ec559500a63f	342	/** Wake up the task blocked in reading from serial line (if any) */
andrewbonney	0:ec559500a63f	343	static void
andrewbonney	0:ec559500a63f	344	pppRecvWakeup(int pd)
andrewbonney	0:ec559500a63f	345	{
andrewbonney	0:ec559500a63f	346	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
andrewbonney	0:ec559500a63f	347	sio_read_abort(pppControl[pd].fd);
andrewbonney	0:ec559500a63f	348	}
andrewbonney	0:ec559500a63f	349	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	350
andrewbonney	0:ec559500a63f	351	void
andrewbonney	0:ec559500a63f	352	pppLinkTerminated(int pd)
andrewbonney	0:ec559500a63f	353	{
andrewbonney	0:ec559500a63f	354	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
andrewbonney	0:ec559500a63f	355
andrewbonney	0:ec559500a63f	356	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	357	if (pppControl[pd].ethif) {
andrewbonney	0:ec559500a63f	358	pppoe_disconnect(pppControl[pd].pppoe_sc);
andrewbonney	0:ec559500a63f	359	} else
andrewbonney	0:ec559500a63f	360	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	361	{
andrewbonney	0:ec559500a63f	362	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	363	PPPControl* pc;
andrewbonney	0:ec559500a63f	364	pppRecvWakeup(pd);
andrewbonney	0:ec559500a63f	365	pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	366	pppDrop(&pc->rx); /* bug fix #17726 */
andrewbonney	0:ec559500a63f	367
andrewbonney	0:ec559500a63f	368	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
andrewbonney	0:ec559500a63f	369	if (pc->linkStatusCB) {
andrewbonney	0:ec559500a63f	370	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
andrewbonney	0:ec559500a63f	371	}
andrewbonney	0:ec559500a63f	372
andrewbonney	0:ec559500a63f	373	pc->openFlag = 0;/**/
andrewbonney	0:ec559500a63f	374	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	375	}
andrewbonney	0:ec559500a63f	376	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
andrewbonney	0:ec559500a63f	377	}
andrewbonney	0:ec559500a63f	378
andrewbonney	0:ec559500a63f	379	void
andrewbonney	0:ec559500a63f	380	pppLinkDown(int pd)
andrewbonney	0:ec559500a63f	381	{
andrewbonney	0:ec559500a63f	382	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
andrewbonney	0:ec559500a63f	383
andrewbonney	0:ec559500a63f	384	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	385	if (pppControl[pd].ethif) {
andrewbonney	0:ec559500a63f	386	pppoe_disconnect(pppControl[pd].pppoe_sc);
andrewbonney	0:ec559500a63f	387	} else
andrewbonney	0:ec559500a63f	388	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	389	{
andrewbonney	0:ec559500a63f	390	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	391	pppRecvWakeup(pd);
andrewbonney	0:ec559500a63f	392	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	393	}
andrewbonney	0:ec559500a63f	394	}
andrewbonney	0:ec559500a63f	395
andrewbonney	0:ec559500a63f	396	/** Initiate LCP open request */
andrewbonney	0:ec559500a63f	397	static void
andrewbonney	0:ec559500a63f	398	pppStart(int pd)
andrewbonney	0:ec559500a63f	399	{
andrewbonney	0:ec559500a63f	400	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
andrewbonney	0:ec559500a63f	401	lcp_lowerup(pd);
andrewbonney	0:ec559500a63f	402	lcp_open(pd); /* Start protocol */
andrewbonney	0:ec559500a63f	403	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
andrewbonney	0:ec559500a63f	404	}
andrewbonney	0:ec559500a63f	405
andrewbonney	0:ec559500a63f	406	/** LCP close request */
andrewbonney	0:ec559500a63f	407	static void
andrewbonney	0:ec559500a63f	408	pppStop(int pd)
andrewbonney	0:ec559500a63f	409	{
andrewbonney	0:ec559500a63f	410	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
andrewbonney	0:ec559500a63f	411	lcp_close(pd, "User request");
andrewbonney	0:ec559500a63f	412	}
andrewbonney	0:ec559500a63f	413
andrewbonney	0:ec559500a63f	414	/** Called when carrier/link is lost */
andrewbonney	0:ec559500a63f	415	static void
andrewbonney	0:ec559500a63f	416	pppHup(int pd)
andrewbonney	0:ec559500a63f	417	{
andrewbonney	0:ec559500a63f	418	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
andrewbonney	0:ec559500a63f	419	lcp_lowerdown(pd);
andrewbonney	0:ec559500a63f	420	link_terminated(pd);
andrewbonney	0:ec559500a63f	421	}
andrewbonney	0:ec559500a63f	422
andrewbonney	0:ec559500a63f	423	/***********************************/
andrewbonney	0:ec559500a63f	424	/* PUBLIC FUNCTION DEFINITIONS */
andrewbonney	0:ec559500a63f	425	/***********************************/
andrewbonney	0:ec559500a63f	426	/* Initialize the PPP subsystem. */
andrewbonney	0:ec559500a63f	427
andrewbonney	0:ec559500a63f	428	struct ppp_settings ppp_settings;
andrewbonney	0:ec559500a63f	429
andrewbonney	0:ec559500a63f	430	void
andrewbonney	0:ec559500a63f	431	pppInit(void)
andrewbonney	0:ec559500a63f	432	{
andrewbonney	0:ec559500a63f	433	struct protent *protp;
andrewbonney	0:ec559500a63f	434	int i, j;
andrewbonney	0:ec559500a63f	435
andrewbonney	0:ec559500a63f	436	memset(&ppp_settings, 0, sizeof(ppp_settings));
andrewbonney	0:ec559500a63f	437	ppp_settings.usepeerdns = 1;
andrewbonney	0:ec559500a63f	438	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
andrewbonney	0:ec559500a63f	439
andrewbonney	0:ec559500a63f	440	magicInit();
andrewbonney	0:ec559500a63f	441
andrewbonney	0:ec559500a63f	442	subnetMask = PP_HTONL(0xffffff00);
andrewbonney	0:ec559500a63f	443
andrewbonney	0:ec559500a63f	444	for (i = 0; i < NUM_PPP; i++) {
andrewbonney	0:ec559500a63f	445	/* Initialize each protocol to the standard option set. */
andrewbonney	0:ec559500a63f	446	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
andrewbonney	0:ec559500a63f	447	(*protp->init)(i);
andrewbonney	0:ec559500a63f	448	}
andrewbonney	0:ec559500a63f	449	}
andrewbonney	0:ec559500a63f	450	}
andrewbonney	0:ec559500a63f	451
andrewbonney	0:ec559500a63f	452	void
andrewbonney	0:ec559500a63f	453	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
andrewbonney	0:ec559500a63f	454	{
andrewbonney	0:ec559500a63f	455	switch(authType) {
andrewbonney	0:ec559500a63f	456	case PPPAUTHTYPE_NONE:
andrewbonney	0:ec559500a63f	457	default:
andrewbonney	0:ec559500a63f	458	#ifdef LWIP_PPP_STRICT_PAP_REJECT
andrewbonney	0:ec559500a63f	459	ppp_settings.refuse_pap = 1;
andrewbonney	0:ec559500a63f	460	#else /* LWIP_PPP_STRICT_PAP_REJECT */
andrewbonney	0:ec559500a63f	461	/* some providers request pap and accept an empty login/pw */
andrewbonney	0:ec559500a63f	462	ppp_settings.refuse_pap = 0;
andrewbonney	0:ec559500a63f	463	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
andrewbonney	0:ec559500a63f	464	ppp_settings.refuse_chap = 1;
andrewbonney	0:ec559500a63f	465	break;
andrewbonney	0:ec559500a63f	466
andrewbonney	0:ec559500a63f	467	case PPPAUTHTYPE_ANY:
andrewbonney	0:ec559500a63f	468	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
andrewbonney	0:ec559500a63f	469	* RFC 1994 says:
andrewbonney	0:ec559500a63f	470	*
andrewbonney	0:ec559500a63f	471	* In practice, within or associated with each PPP server, there is a
andrewbonney	0:ec559500a63f	472	* database which associates "user" names with authentication
andrewbonney	0:ec559500a63f	473	* information ("secrets"). It is not anticipated that a particular
andrewbonney	0:ec559500a63f	474	* named user would be authenticated by multiple methods. This would
andrewbonney	0:ec559500a63f	475	* make the user vulnerable to attacks which negotiate the least secure
andrewbonney	0:ec559500a63f	476	* method from among a set (such as PAP rather than CHAP). If the same
andrewbonney	0:ec559500a63f	477	* secret was used, PAP would reveal the secret to be used later with
andrewbonney	0:ec559500a63f	478	* CHAP.
andrewbonney	0:ec559500a63f	479	*
andrewbonney	0:ec559500a63f	480	* Instead, for each user name there should be an indication of exactly
andrewbonney	0:ec559500a63f	481	* one method used to authenticate that user name. If a user needs to
andrewbonney	0:ec559500a63f	482	* make use of different authentication methods under different
andrewbonney	0:ec559500a63f	483	* circumstances, then distinct user names SHOULD be employed, each of
andrewbonney	0:ec559500a63f	484	* which identifies exactly one authentication method.
andrewbonney	0:ec559500a63f	485	*
andrewbonney	0:ec559500a63f	486	*/
andrewbonney	0:ec559500a63f	487	ppp_settings.refuse_pap = 0;
andrewbonney	0:ec559500a63f	488	ppp_settings.refuse_chap = 0;
andrewbonney	0:ec559500a63f	489	break;
andrewbonney	0:ec559500a63f	490
andrewbonney	0:ec559500a63f	491	case PPPAUTHTYPE_PAP:
andrewbonney	0:ec559500a63f	492	ppp_settings.refuse_pap = 0;
andrewbonney	0:ec559500a63f	493	ppp_settings.refuse_chap = 1;
andrewbonney	0:ec559500a63f	494	break;
andrewbonney	0:ec559500a63f	495
andrewbonney	0:ec559500a63f	496	case PPPAUTHTYPE_CHAP:
andrewbonney	0:ec559500a63f	497	ppp_settings.refuse_pap = 1;
andrewbonney	0:ec559500a63f	498	ppp_settings.refuse_chap = 0;
andrewbonney	0:ec559500a63f	499	break;
andrewbonney	0:ec559500a63f	500	}
andrewbonney	0:ec559500a63f	501
andrewbonney	0:ec559500a63f	502	if(user) {
andrewbonney	0:ec559500a63f	503	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
andrewbonney	0:ec559500a63f	504	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
andrewbonney	0:ec559500a63f	505	} else {
andrewbonney	0:ec559500a63f	506	ppp_settings.user[0] = '\0';
andrewbonney	0:ec559500a63f	507	}
andrewbonney	0:ec559500a63f	508
andrewbonney	0:ec559500a63f	509	if(passwd) {
andrewbonney	0:ec559500a63f	510	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
andrewbonney	0:ec559500a63f	511	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
andrewbonney	0:ec559500a63f	512	} else {
andrewbonney	0:ec559500a63f	513	ppp_settings.passwd[0] = '\0';
andrewbonney	0:ec559500a63f	514	}
andrewbonney	0:ec559500a63f	515	}
andrewbonney	0:ec559500a63f	516
andrewbonney	0:ec559500a63f	517	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	518	/** Open a new PPP connection using the given I/O device.
andrewbonney	0:ec559500a63f	519	* This initializes the PPP control block but does not
andrewbonney	0:ec559500a63f	520	* attempt to negotiate the LCP session. If this port
andrewbonney	0:ec559500a63f	521	* connects to a modem, the modem connection must be
andrewbonney	0:ec559500a63f	522	* established before calling this.
andrewbonney	0:ec559500a63f	523	* Return a new PPP connection descriptor on success or
andrewbonney	0:ec559500a63f	524	* an error code (negative) on failure.
andrewbonney	0:ec559500a63f	525	*
andrewbonney	0:ec559500a63f	526	* pppOpen() is directly defined to this function.
andrewbonney	0:ec559500a63f	527	*/
andrewbonney	0:ec559500a63f	528	int
andrewbonney	0:ec559500a63f	529	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
andrewbonney	0:ec559500a63f	530	{
andrewbonney	0:ec559500a63f	531	PPPControl *pc;
andrewbonney	0:ec559500a63f	532	int pd;
andrewbonney	0:ec559500a63f	533
andrewbonney	0:ec559500a63f	534	if (linkStatusCB == NULL) {
andrewbonney	0:ec559500a63f	535	/* PPP is single-threaded: without a callback,
andrewbonney	0:ec559500a63f	536	* there is no way to know when the link is up. */
andrewbonney	0:ec559500a63f	537	return PPPERR_PARAM;
andrewbonney	0:ec559500a63f	538	}
andrewbonney	0:ec559500a63f	539
andrewbonney	0:ec559500a63f	540	/* Find a free PPP session descriptor. */
andrewbonney	0:ec559500a63f	541	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
andrewbonney	0:ec559500a63f	542
andrewbonney	0:ec559500a63f	543	if (pd >= NUM_PPP) {
andrewbonney	0:ec559500a63f	544	pd = PPPERR_OPEN;
andrewbonney	0:ec559500a63f	545	} else {
andrewbonney	0:ec559500a63f	546	pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	547	/* @todo: is this correct or do I overwrite something? */
andrewbonney	0:ec559500a63f	548	memset(pc, 0, sizeof(PPPControl));
andrewbonney	0:ec559500a63f	549	pc->rx.pd = pd;
andrewbonney	0:ec559500a63f	550	pc->rx.fd = fd;
andrewbonney	0:ec559500a63f	551
andrewbonney	0:ec559500a63f	552	pc->openFlag = 1;
andrewbonney	0:ec559500a63f	553	pc->fd = fd;
andrewbonney	0:ec559500a63f	554
andrewbonney	0:ec559500a63f	555	#if VJ_SUPPORT
andrewbonney	0:ec559500a63f	556	vj_compress_init(&pc->vjComp);
andrewbonney	0:ec559500a63f	557	#endif /* VJ_SUPPORT */
andrewbonney	0:ec559500a63f	558
andrewbonney	0:ec559500a63f	559	/*
andrewbonney	0:ec559500a63f	560	* Default the in and out accm so that escape and flag characters
andrewbonney	0:ec559500a63f	561	* are always escaped.
andrewbonney	0:ec559500a63f	562	*/
andrewbonney	0:ec559500a63f	563	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
andrewbonney	0:ec559500a63f	564	pc->outACCM[15] = 0x60;
andrewbonney	0:ec559500a63f	565
andrewbonney	0:ec559500a63f	566	pc->linkStatusCB = linkStatusCB;
andrewbonney	0:ec559500a63f	567	pc->linkStatusCtx = linkStatusCtx;
andrewbonney	0:ec559500a63f	568
andrewbonney	0:ec559500a63f	569	/*
andrewbonney	0:ec559500a63f	570	* Start the connection and handle incoming events (packet or timeout).
andrewbonney	0:ec559500a63f	571	*/
andrewbonney	0:ec559500a63f	572	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
andrewbonney	0:ec559500a63f	573	pppStart(pd);
andrewbonney	0:ec559500a63f	574	#if PPP_INPROC_OWNTHREAD
andrewbonney	0:ec559500a63f	575	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
andrewbonney	0:ec559500a63f	576	#endif
andrewbonney	0:ec559500a63f	577	}
andrewbonney	0:ec559500a63f	578
andrewbonney	0:ec559500a63f	579	return pd;
andrewbonney	0:ec559500a63f	580	}
andrewbonney	0:ec559500a63f	581	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	582
andrewbonney	0:ec559500a63f	583	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	584	static void pppOverEthernetLinkStatusCB(int pd, int up);
andrewbonney	0:ec559500a63f	585
andrewbonney	0:ec559500a63f	586	void
andrewbonney	0:ec559500a63f	587	pppOverEthernetClose(int pd)
andrewbonney	0:ec559500a63f	588	{
andrewbonney	0:ec559500a63f	589	PPPControl* pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	590
andrewbonney	0:ec559500a63f	591	/* TJL There's no lcp_deinit */
andrewbonney	0:ec559500a63f	592	lcp_close(pd, NULL);
andrewbonney	0:ec559500a63f	593
andrewbonney	0:ec559500a63f	594	pppoe_destroy(&pc->netif);
andrewbonney	0:ec559500a63f	595	}
andrewbonney	0:ec559500a63f	596
andrewbonney	0:ec559500a63f	597	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
andrewbonney	0:ec559500a63f	598	{
andrewbonney	0:ec559500a63f	599	PPPControl *pc;
andrewbonney	0:ec559500a63f	600	int pd;
andrewbonney	0:ec559500a63f	601
andrewbonney	0:ec559500a63f	602	LWIP_UNUSED_ARG(service_name);
andrewbonney	0:ec559500a63f	603	LWIP_UNUSED_ARG(concentrator_name);
andrewbonney	0:ec559500a63f	604
andrewbonney	0:ec559500a63f	605	if (linkStatusCB == NULL) {
andrewbonney	0:ec559500a63f	606	/* PPP is single-threaded: without a callback,
andrewbonney	0:ec559500a63f	607	* there is no way to know when the link is up. */
andrewbonney	0:ec559500a63f	608	return PPPERR_PARAM;
andrewbonney	0:ec559500a63f	609	}
andrewbonney	0:ec559500a63f	610
andrewbonney	0:ec559500a63f	611	/* Find a free PPP session descriptor. Critical region? */
andrewbonney	0:ec559500a63f	612	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
andrewbonney	0:ec559500a63f	613	if (pd >= NUM_PPP) {
andrewbonney	0:ec559500a63f	614	pd = PPPERR_OPEN;
andrewbonney	0:ec559500a63f	615	} else {
andrewbonney	0:ec559500a63f	616	pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	617	memset(pc, 0, sizeof(PPPControl));
andrewbonney	0:ec559500a63f	618	pc->openFlag = 1;
andrewbonney	0:ec559500a63f	619	pc->ethif = ethif;
andrewbonney	0:ec559500a63f	620
andrewbonney	0:ec559500a63f	621	pc->linkStatusCB = linkStatusCB;
andrewbonney	0:ec559500a63f	622	pc->linkStatusCtx = linkStatusCtx;
andrewbonney	0:ec559500a63f	623
andrewbonney	0:ec559500a63f	624	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
andrewbonney	0:ec559500a63f	625	lcp_wantoptions[pd].neg_asyncmap = 0;
andrewbonney	0:ec559500a63f	626	lcp_wantoptions[pd].neg_pcompression = 0;
andrewbonney	0:ec559500a63f	627	lcp_wantoptions[pd].neg_accompression = 0;
andrewbonney	0:ec559500a63f	628
andrewbonney	0:ec559500a63f	629	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
andrewbonney	0:ec559500a63f	630	lcp_allowoptions[pd].neg_asyncmap = 0;
andrewbonney	0:ec559500a63f	631	lcp_allowoptions[pd].neg_pcompression = 0;
andrewbonney	0:ec559500a63f	632	lcp_allowoptions[pd].neg_accompression = 0;
andrewbonney	0:ec559500a63f	633
andrewbonney	0:ec559500a63f	634	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
andrewbonney	0:ec559500a63f	635	pc->openFlag = 0;
andrewbonney	0:ec559500a63f	636	return PPPERR_OPEN;
andrewbonney	0:ec559500a63f	637	}
andrewbonney	0:ec559500a63f	638
andrewbonney	0:ec559500a63f	639	pppoe_connect(pc->pppoe_sc);
andrewbonney	0:ec559500a63f	640	}
andrewbonney	0:ec559500a63f	641
andrewbonney	0:ec559500a63f	642	return pd;
andrewbonney	0:ec559500a63f	643	}
andrewbonney	0:ec559500a63f	644	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	645
andrewbonney	0:ec559500a63f	646
andrewbonney	0:ec559500a63f	647	/* Close a PPP connection and release the descriptor.
andrewbonney	0:ec559500a63f	648	* Any outstanding packets in the queues are dropped.
andrewbonney	0:ec559500a63f	649	* Return 0 on success, an error code on failure. */
andrewbonney	0:ec559500a63f	650	int
andrewbonney	0:ec559500a63f	651	pppClose(int pd)
andrewbonney	0:ec559500a63f	652	{
andrewbonney	0:ec559500a63f	653	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	654	int st = 0;
andrewbonney	0:ec559500a63f	655
andrewbonney	0:ec559500a63f	656	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
andrewbonney	0:ec559500a63f	657
andrewbonney	0:ec559500a63f	658	/* Disconnect */
andrewbonney	0:ec559500a63f	659	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	660	if(pc->ethif) {
andrewbonney	0:ec559500a63f	661	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
andrewbonney	0:ec559500a63f	662	pc->errCode = PPPERR_USER;
andrewbonney	0:ec559500a63f	663	/* This will leave us at PHASE_DEAD. */
andrewbonney	0:ec559500a63f	664	pppStop(pd);
andrewbonney	0:ec559500a63f	665	} else
andrewbonney	0:ec559500a63f	666	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	667	{
andrewbonney	0:ec559500a63f	668	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	669	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
andrewbonney	0:ec559500a63f	670	pc->errCode = PPPERR_USER;
andrewbonney	0:ec559500a63f	671	/* This will leave us at PHASE_DEAD. */
andrewbonney	0:ec559500a63f	672	pppStop(pd);
andrewbonney	0:ec559500a63f	673	pppRecvWakeup(pd);
andrewbonney	0:ec559500a63f	674	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	675	}
andrewbonney	0:ec559500a63f	676
andrewbonney	0:ec559500a63f	677	return st;
andrewbonney	0:ec559500a63f	678	}
andrewbonney	0:ec559500a63f	679
andrewbonney	0:ec559500a63f	680	/* This function is called when carrier is lost on the PPP channel. */
andrewbonney	0:ec559500a63f	681	void
andrewbonney	0:ec559500a63f	682	pppSigHUP(int pd)
andrewbonney	0:ec559500a63f	683	{
andrewbonney	0:ec559500a63f	684	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	685	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	686	if(pc->ethif) {
andrewbonney	0:ec559500a63f	687	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
andrewbonney	0:ec559500a63f	688	pppHup(pd);
andrewbonney	0:ec559500a63f	689	} else
andrewbonney	0:ec559500a63f	690	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	691	{
andrewbonney	0:ec559500a63f	692	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	693	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
andrewbonney	0:ec559500a63f	694	pppHup(pd);
andrewbonney	0:ec559500a63f	695	pppRecvWakeup(pd);
andrewbonney	0:ec559500a63f	696	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	697	}
andrewbonney	0:ec559500a63f	698	}
andrewbonney	0:ec559500a63f	699
andrewbonney	0:ec559500a63f	700	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	701	static void
andrewbonney	0:ec559500a63f	702	nPut(PPPControl pc, struct pbuf nb)
andrewbonney	0:ec559500a63f	703	{
andrewbonney	0:ec559500a63f	704	struct pbuf *b;
andrewbonney	0:ec559500a63f	705	int c;
andrewbonney	0:ec559500a63f	706
andrewbonney	0:ec559500a63f	707	for(b = nb; b != NULL; b = b->next) {
andrewbonney	0:ec559500a63f	708	if((c = sio_write(pc->fd, (u8_t *)b->payload, b->len)) != b->len) {
andrewbonney	0:ec559500a63f	709	PPPDEBUG(LOG_WARNING,
andrewbonney	0:ec559500a63f	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));
andrewbonney	0:ec559500a63f	711	LINK_STATS_INC(link.err);
andrewbonney	0:ec559500a63f	712	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
andrewbonney	0:ec559500a63f	713	snmp_inc_ifoutdiscards(&pc->netif);
andrewbonney	0:ec559500a63f	714	pbuf_free(nb);
andrewbonney	0:ec559500a63f	715	return;
andrewbonney	0:ec559500a63f	716	}
andrewbonney	0:ec559500a63f	717	}
andrewbonney	0:ec559500a63f	718
andrewbonney	0:ec559500a63f	719	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
andrewbonney	0:ec559500a63f	720	snmp_inc_ifoutucastpkts(&pc->netif);
andrewbonney	0:ec559500a63f	721	pbuf_free(nb);
andrewbonney	0:ec559500a63f	722	LINK_STATS_INC(link.xmit);
andrewbonney	0:ec559500a63f	723	}
andrewbonney	0:ec559500a63f	724
andrewbonney	0:ec559500a63f	725	/*
andrewbonney	0:ec559500a63f	726	* pppAppend - append given character to end of given pbuf. If outACCM
andrewbonney	0:ec559500a63f	727	* is not NULL and the character needs to be escaped, do so.
andrewbonney	0:ec559500a63f	728	* If pbuf is full, append another.
andrewbonney	0:ec559500a63f	729	* Return the current pbuf.
andrewbonney	0:ec559500a63f	730	*/
andrewbonney	0:ec559500a63f	731	static struct pbuf *
andrewbonney	0:ec559500a63f	732	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
andrewbonney	0:ec559500a63f	733	{
andrewbonney	0:ec559500a63f	734	struct pbuf *tb = nb;
andrewbonney	0:ec559500a63f	735
andrewbonney	0:ec559500a63f	736	/* Make sure there is room for the character and an escape code.
andrewbonney	0:ec559500a63f	737	* Sure we don't quite fill the buffer if the character doesn't
andrewbonney	0:ec559500a63f	738	* get escaped but is one character worth complicating this? */
andrewbonney	0:ec559500a63f	739	/* Note: We assume no packet header. */
andrewbonney	0:ec559500a63f	740	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
andrewbonney	0:ec559500a63f	741	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
andrewbonney	0:ec559500a63f	742	if (tb) {
andrewbonney	0:ec559500a63f	743	nb->next = tb;
andrewbonney	0:ec559500a63f	744	} else {
andrewbonney	0:ec559500a63f	745	LINK_STATS_INC(link.memerr);
andrewbonney	0:ec559500a63f	746	}
andrewbonney	0:ec559500a63f	747	nb = tb;
andrewbonney	0:ec559500a63f	748	}
andrewbonney	0:ec559500a63f	749
andrewbonney	0:ec559500a63f	750	if (nb) {
andrewbonney	0:ec559500a63f	751	if (outACCM && ESCAPE_P(*outACCM, c)) {
andrewbonney	0:ec559500a63f	752	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
andrewbonney	0:ec559500a63f	753	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
andrewbonney	0:ec559500a63f	754	} else {
andrewbonney	0:ec559500a63f	755	((u_char)nb->payload + nb->len++) = c;
andrewbonney	0:ec559500a63f	756	}
andrewbonney	0:ec559500a63f	757	}
andrewbonney	0:ec559500a63f	758
andrewbonney	0:ec559500a63f	759	return tb;
andrewbonney	0:ec559500a63f	760	}
andrewbonney	0:ec559500a63f	761	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	762
andrewbonney	0:ec559500a63f	763	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	764	static err_t
andrewbonney	0:ec559500a63f	765	pppifOutputOverEthernet(int pd, struct pbuf *p)
andrewbonney	0:ec559500a63f	766	{
andrewbonney	0:ec559500a63f	767	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	768	struct pbuf *pb;
andrewbonney	0:ec559500a63f	769	u_short protocol = PPP_IP;
andrewbonney	0:ec559500a63f	770	int i=0;
andrewbonney	0:ec559500a63f	771	u16_t tot_len;
andrewbonney	0:ec559500a63f	772
andrewbonney	0:ec559500a63f	773	/* @todo: try to use pbuf_header() here! */
andrewbonney	0:ec559500a63f	774	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
andrewbonney	0:ec559500a63f	775	if(!pb) {
andrewbonney	0:ec559500a63f	776	LINK_STATS_INC(link.memerr);
andrewbonney	0:ec559500a63f	777	LINK_STATS_INC(link.proterr);
andrewbonney	0:ec559500a63f	778	snmp_inc_ifoutdiscards(&pc->netif);
andrewbonney	0:ec559500a63f	779	return ERR_MEM;
andrewbonney	0:ec559500a63f	780	}
andrewbonney	0:ec559500a63f	781
andrewbonney	0:ec559500a63f	782	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
andrewbonney	0:ec559500a63f	783
andrewbonney	0:ec559500a63f	784	pc->lastXMit = sys_jiffies();
andrewbonney	0:ec559500a63f	785
andrewbonney	0:ec559500a63f	786	if (!pc->pcomp \|\| protocol > 0xFF) {
andrewbonney	0:ec559500a63f	787	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
andrewbonney	0:ec559500a63f	788	}
andrewbonney	0:ec559500a63f	789	((u_char)pb->payload + i) = protocol & 0xFF;
andrewbonney	0:ec559500a63f	790
andrewbonney	0:ec559500a63f	791	pbuf_chain(pb, p);
andrewbonney	0:ec559500a63f	792	tot_len = pb->tot_len;
andrewbonney	0:ec559500a63f	793
andrewbonney	0:ec559500a63f	794	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
andrewbonney	0:ec559500a63f	795	LINK_STATS_INC(link.err);
andrewbonney	0:ec559500a63f	796	snmp_inc_ifoutdiscards(&pc->netif);
andrewbonney	0:ec559500a63f	797	return PPPERR_DEVICE;
andrewbonney	0:ec559500a63f	798	}
andrewbonney	0:ec559500a63f	799
andrewbonney	0:ec559500a63f	800	snmp_add_ifoutoctets(&pc->netif, tot_len);
andrewbonney	0:ec559500a63f	801	snmp_inc_ifoutucastpkts(&pc->netif);
andrewbonney	0:ec559500a63f	802	LINK_STATS_INC(link.xmit);
andrewbonney	0:ec559500a63f	803	return ERR_OK;
andrewbonney	0:ec559500a63f	804	}
andrewbonney	0:ec559500a63f	805	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	806
andrewbonney	0:ec559500a63f	807	/* Send a packet on the given connection. */
andrewbonney	0:ec559500a63f	808	static err_t
andrewbonney	0:ec559500a63f	809	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
andrewbonney	0:ec559500a63f	810	{
andrewbonney	0:ec559500a63f	811	int pd = (int)(size_t)netif->state;
andrewbonney	0:ec559500a63f	812	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	813	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	814	u_short protocol = PPP_IP;
andrewbonney	0:ec559500a63f	815	u_int fcsOut = PPP_INITFCS;
andrewbonney	0:ec559500a63f	816	struct pbuf headMB = NULL, tailMB = NULL, *p;
andrewbonney	0:ec559500a63f	817	u_char c;
andrewbonney	0:ec559500a63f	818	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	819
andrewbonney	0:ec559500a63f	820	LWIP_UNUSED_ARG(ipaddr);
andrewbonney	0:ec559500a63f	821
andrewbonney	0:ec559500a63f	822	/* Validate parameters. */
andrewbonney	0:ec559500a63f	823	/* We let any protocol value go through - it can't hurt us
andrewbonney	0:ec559500a63f	824	* and the peer will just drop it if it's not accepting it. */
andrewbonney	0:ec559500a63f	825	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
andrewbonney	0:ec559500a63f	826	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
andrewbonney	0:ec559500a63f	827	pd, PPP_IP, pb));
andrewbonney	0:ec559500a63f	828	LINK_STATS_INC(link.opterr);
andrewbonney	0:ec559500a63f	829	LINK_STATS_INC(link.drop);
andrewbonney	0:ec559500a63f	830	snmp_inc_ifoutdiscards(netif);
andrewbonney	0:ec559500a63f	831	return ERR_ARG;
andrewbonney	0:ec559500a63f	832	}
andrewbonney	0:ec559500a63f	833
andrewbonney	0:ec559500a63f	834	/* Check that the link is up. */
andrewbonney	0:ec559500a63f	835	if (lcp_phase[pd] == PHASE_DEAD) {
andrewbonney	0:ec559500a63f	836	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
andrewbonney	0:ec559500a63f	837	LINK_STATS_INC(link.rterr);
andrewbonney	0:ec559500a63f	838	LINK_STATS_INC(link.drop);
andrewbonney	0:ec559500a63f	839	snmp_inc_ifoutdiscards(netif);
andrewbonney	0:ec559500a63f	840	return ERR_RTE;
andrewbonney	0:ec559500a63f	841	}
andrewbonney	0:ec559500a63f	842
andrewbonney	0:ec559500a63f	843	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	844	if(pc->ethif) {
andrewbonney	0:ec559500a63f	845	return pppifOutputOverEthernet(pd, pb);
andrewbonney	0:ec559500a63f	846	}
andrewbonney	0:ec559500a63f	847	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	848
andrewbonney	0:ec559500a63f	849	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	850	/* Grab an output buffer. */
andrewbonney	0:ec559500a63f	851	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
andrewbonney	0:ec559500a63f	852	if (headMB == NULL) {
andrewbonney	0:ec559500a63f	853	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
andrewbonney	0:ec559500a63f	854	LINK_STATS_INC(link.memerr);
andrewbonney	0:ec559500a63f	855	LINK_STATS_INC(link.drop);
andrewbonney	0:ec559500a63f	856	snmp_inc_ifoutdiscards(netif);
andrewbonney	0:ec559500a63f	857	return ERR_MEM;
andrewbonney	0:ec559500a63f	858	}
andrewbonney	0:ec559500a63f	859
andrewbonney	0:ec559500a63f	860	#if VJ_SUPPORT
andrewbonney	0:ec559500a63f	861	/*
andrewbonney	0:ec559500a63f	862	* Attempt Van Jacobson header compression if VJ is configured and
andrewbonney	0:ec559500a63f	863	* this is an IP packet.
andrewbonney	0:ec559500a63f	864	*/
andrewbonney	0:ec559500a63f	865	if (protocol == PPP_IP && pc->vjEnabled) {
andrewbonney	0:ec559500a63f	866	switch (vj_compress_tcp(&pc->vjComp, pb)) {
andrewbonney	0:ec559500a63f	867	case TYPE_IP:
andrewbonney	0:ec559500a63f	868	/* No change...
andrewbonney	0:ec559500a63f	869	protocol = PPP_IP_PROTOCOL; */
andrewbonney	0:ec559500a63f	870	break;
andrewbonney	0:ec559500a63f	871	case TYPE_COMPRESSED_TCP:
andrewbonney	0:ec559500a63f	872	protocol = PPP_VJC_COMP;
andrewbonney	0:ec559500a63f	873	break;
andrewbonney	0:ec559500a63f	874	case TYPE_UNCOMPRESSED_TCP:
andrewbonney	0:ec559500a63f	875	protocol = PPP_VJC_UNCOMP;
andrewbonney	0:ec559500a63f	876	break;
andrewbonney	0:ec559500a63f	877	default:
andrewbonney	0:ec559500a63f	878	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
andrewbonney	0:ec559500a63f	879	LINK_STATS_INC(link.proterr);
andrewbonney	0:ec559500a63f	880	LINK_STATS_INC(link.drop);
andrewbonney	0:ec559500a63f	881	snmp_inc_ifoutdiscards(netif);
andrewbonney	0:ec559500a63f	882	pbuf_free(headMB);
andrewbonney	0:ec559500a63f	883	return ERR_VAL;
andrewbonney	0:ec559500a63f	884	}
andrewbonney	0:ec559500a63f	885	}
andrewbonney	0:ec559500a63f	886	#endif /* VJ_SUPPORT */
andrewbonney	0:ec559500a63f	887
andrewbonney	0:ec559500a63f	888	tailMB = headMB;
andrewbonney	0:ec559500a63f	889
andrewbonney	0:ec559500a63f	890	/* Build the PPP header. */
andrewbonney	0:ec559500a63f	891	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
andrewbonney	0:ec559500a63f	892	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
andrewbonney	0:ec559500a63f	893	}
andrewbonney	0:ec559500a63f	894
andrewbonney	0:ec559500a63f	895	pc->lastXMit = sys_jiffies();
andrewbonney	0:ec559500a63f	896	if (!pc->accomp) {
andrewbonney	0:ec559500a63f	897	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
andrewbonney	0:ec559500a63f	898	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
andrewbonney	0:ec559500a63f	899	fcsOut = PPP_FCS(fcsOut, PPP_UI);
andrewbonney	0:ec559500a63f	900	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
andrewbonney	0:ec559500a63f	901	}
andrewbonney	0:ec559500a63f	902	if (!pc->pcomp \|\| protocol > 0xFF) {
andrewbonney	0:ec559500a63f	903	c = (protocol >> 8) & 0xFF;
andrewbonney	0:ec559500a63f	904	fcsOut = PPP_FCS(fcsOut, c);
andrewbonney	0:ec559500a63f	905	tailMB = pppAppend(c, tailMB, &pc->outACCM);
andrewbonney	0:ec559500a63f	906	}
andrewbonney	0:ec559500a63f	907	c = protocol & 0xFF;
andrewbonney	0:ec559500a63f	908	fcsOut = PPP_FCS(fcsOut, c);
andrewbonney	0:ec559500a63f	909	tailMB = pppAppend(c, tailMB, &pc->outACCM);
andrewbonney	0:ec559500a63f	910
andrewbonney	0:ec559500a63f	911	/* Load packet. */
andrewbonney	0:ec559500a63f	912	for(p = pb; p; p = p->next) {
andrewbonney	0:ec559500a63f	913	int n;
andrewbonney	0:ec559500a63f	914	u_char *sPtr;
andrewbonney	0:ec559500a63f	915
andrewbonney	0:ec559500a63f	916	sPtr = (u_char*)p->payload;
andrewbonney	0:ec559500a63f	917	n = p->len;
andrewbonney	0:ec559500a63f	918	while (n-- > 0) {
andrewbonney	0:ec559500a63f	919	c = *sPtr++;
andrewbonney	0:ec559500a63f	920
andrewbonney	0:ec559500a63f	921	/* Update FCS before checking for special characters. */
andrewbonney	0:ec559500a63f	922	fcsOut = PPP_FCS(fcsOut, c);
andrewbonney	0:ec559500a63f	923
andrewbonney	0:ec559500a63f	924	/* Copy to output buffer escaping special characters. */
andrewbonney	0:ec559500a63f	925	tailMB = pppAppend(c, tailMB, &pc->outACCM);
andrewbonney	0:ec559500a63f	926	}
andrewbonney	0:ec559500a63f	927	}
andrewbonney	0:ec559500a63f	928
andrewbonney	0:ec559500a63f	929	/* Add FCS and trailing flag. */
andrewbonney	0:ec559500a63f	930	c = ~fcsOut & 0xFF;
andrewbonney	0:ec559500a63f	931	tailMB = pppAppend(c, tailMB, &pc->outACCM);
andrewbonney	0:ec559500a63f	932	c = (~fcsOut >> 8) & 0xFF;
andrewbonney	0:ec559500a63f	933	tailMB = pppAppend(c, tailMB, &pc->outACCM);
andrewbonney	0:ec559500a63f	934	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
andrewbonney	0:ec559500a63f	935
andrewbonney	0:ec559500a63f	936	/* If we failed to complete the packet, throw it away. */
andrewbonney	0:ec559500a63f	937	if (!tailMB) {
andrewbonney	0:ec559500a63f	938	PPPDEBUG(LOG_WARNING,
andrewbonney	0:ec559500a63f	939	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
andrewbonney	0:ec559500a63f	940	pd, protocol));
andrewbonney	0:ec559500a63f	941	pbuf_free(headMB);
andrewbonney	0:ec559500a63f	942	LINK_STATS_INC(link.memerr);
andrewbonney	0:ec559500a63f	943	LINK_STATS_INC(link.drop);
andrewbonney	0:ec559500a63f	944	snmp_inc_ifoutdiscards(netif);
andrewbonney	0:ec559500a63f	945	return ERR_MEM;
andrewbonney	0:ec559500a63f	946	}
andrewbonney	0:ec559500a63f	947
andrewbonney	0:ec559500a63f	948	/* Send it. */
andrewbonney	0:ec559500a63f	949	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
andrewbonney	0:ec559500a63f	950
andrewbonney	0:ec559500a63f	951	nPut(pc, headMB);
andrewbonney	0:ec559500a63f	952	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	953
andrewbonney	0:ec559500a63f	954	return ERR_OK;
andrewbonney	0:ec559500a63f	955	}
andrewbonney	0:ec559500a63f	956
andrewbonney	0:ec559500a63f	957	/* Get and set parameters for the given connection.
andrewbonney	0:ec559500a63f	958	* Return 0 on success, an error code on failure. */
andrewbonney	0:ec559500a63f	959	int
andrewbonney	0:ec559500a63f	960	pppIOCtl(int pd, int cmd, void *arg)
andrewbonney	0:ec559500a63f	961	{
andrewbonney	0:ec559500a63f	962	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	963	int st = 0;
andrewbonney	0:ec559500a63f	964
andrewbonney	0:ec559500a63f	965	if (pd < 0 \|\| pd >= NUM_PPP) {
andrewbonney	0:ec559500a63f	966	st = PPPERR_PARAM;
andrewbonney	0:ec559500a63f	967	} else {
andrewbonney	0:ec559500a63f	968	switch(cmd) {
andrewbonney	0:ec559500a63f	969	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
andrewbonney	0:ec559500a63f	970	if (arg) {
andrewbonney	0:ec559500a63f	971	(int )arg = (int)(pc->if_up);
andrewbonney	0:ec559500a63f	972	} else {
andrewbonney	0:ec559500a63f	973	st = PPPERR_PARAM;
andrewbonney	0:ec559500a63f	974	}
andrewbonney	0:ec559500a63f	975	break;
andrewbonney	0:ec559500a63f	976	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
andrewbonney	0:ec559500a63f	977	if (arg) {
andrewbonney	0:ec559500a63f	978	pc->errCode = (int )arg;
andrewbonney	0:ec559500a63f	979	} else {
andrewbonney	0:ec559500a63f	980	st = PPPERR_PARAM;
andrewbonney	0:ec559500a63f	981	}
andrewbonney	0:ec559500a63f	982	break;
andrewbonney	0:ec559500a63f	983	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
andrewbonney	0:ec559500a63f	984	if (arg) {
andrewbonney	0:ec559500a63f	985	(int )arg = (int)(pc->errCode);
andrewbonney	0:ec559500a63f	986	} else {
andrewbonney	0:ec559500a63f	987	st = PPPERR_PARAM;
andrewbonney	0:ec559500a63f	988	}
andrewbonney	0:ec559500a63f	989	break;
andrewbonney	0:ec559500a63f	990	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	991	case PPPCTLG_FD: /* Get the fd associated with the ppp */
andrewbonney	0:ec559500a63f	992	if (arg) {
andrewbonney	0:ec559500a63f	993	(sio_fd_t )arg = pc->fd;
andrewbonney	0:ec559500a63f	994	} else {
andrewbonney	0:ec559500a63f	995	st = PPPERR_PARAM;
andrewbonney	0:ec559500a63f	996	}
andrewbonney	0:ec559500a63f	997	break;
andrewbonney	0:ec559500a63f	998	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	999	default:
andrewbonney	0:ec559500a63f	1000	st = PPPERR_PARAM;
andrewbonney	0:ec559500a63f	1001	break;
andrewbonney	0:ec559500a63f	1002	}
andrewbonney	0:ec559500a63f	1003	}
andrewbonney	0:ec559500a63f	1004
andrewbonney	0:ec559500a63f	1005	return st;
andrewbonney	0:ec559500a63f	1006	}
andrewbonney	0:ec559500a63f	1007
andrewbonney	0:ec559500a63f	1008	/*
andrewbonney	0:ec559500a63f	1009	* Return the Maximum Transmission Unit for the given PPP connection.
andrewbonney	0:ec559500a63f	1010	*/
andrewbonney	0:ec559500a63f	1011	u_short
andrewbonney	0:ec559500a63f	1012	pppMTU(int pd)
andrewbonney	0:ec559500a63f	1013	{
andrewbonney	0:ec559500a63f	1014	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	1015	u_short st;
andrewbonney	0:ec559500a63f	1016
andrewbonney	0:ec559500a63f	1017	/* Validate parameters. */
andrewbonney	0:ec559500a63f	1018	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
andrewbonney	0:ec559500a63f	1019	st = 0;
andrewbonney	0:ec559500a63f	1020	} else {
andrewbonney	0:ec559500a63f	1021	st = pc->mtu;
andrewbonney	0:ec559500a63f	1022	}
andrewbonney	0:ec559500a63f	1023
andrewbonney	0:ec559500a63f	1024	return st;
andrewbonney	0:ec559500a63f	1025	}
andrewbonney	0:ec559500a63f	1026
andrewbonney	0:ec559500a63f	1027	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	1028	int
andrewbonney	0:ec559500a63f	1029	pppWriteOverEthernet(int pd, const u_char *s, int n)
andrewbonney	0:ec559500a63f	1030	{
andrewbonney	0:ec559500a63f	1031	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	1032	struct pbuf *pb;
andrewbonney	0:ec559500a63f	1033
andrewbonney	0:ec559500a63f	1034	/* skip address & flags */
andrewbonney	0:ec559500a63f	1035	s += 2;
andrewbonney	0:ec559500a63f	1036	n -= 2;
andrewbonney	0:ec559500a63f	1037
andrewbonney	0:ec559500a63f	1038	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
andrewbonney	0:ec559500a63f	1039	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
andrewbonney	0:ec559500a63f	1040	if(!pb) {
andrewbonney	0:ec559500a63f	1041	LINK_STATS_INC(link.memerr);
andrewbonney	0:ec559500a63f	1042	LINK_STATS_INC(link.proterr);
andrewbonney	0:ec559500a63f	1043	snmp_inc_ifoutdiscards(&pc->netif);
andrewbonney	0:ec559500a63f	1044	return PPPERR_ALLOC;
andrewbonney	0:ec559500a63f	1045	}
andrewbonney	0:ec559500a63f	1046
andrewbonney	0:ec559500a63f	1047	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
andrewbonney	0:ec559500a63f	1048
andrewbonney	0:ec559500a63f	1049	pc->lastXMit = sys_jiffies();
andrewbonney	0:ec559500a63f	1050
andrewbonney	0:ec559500a63f	1051	MEMCPY(pb->payload, s, n);
andrewbonney	0:ec559500a63f	1052
andrewbonney	0:ec559500a63f	1053	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
andrewbonney	0:ec559500a63f	1054	LINK_STATS_INC(link.err);
andrewbonney	0:ec559500a63f	1055	snmp_inc_ifoutdiscards(&pc->netif);
andrewbonney	0:ec559500a63f	1056	return PPPERR_DEVICE;
andrewbonney	0:ec559500a63f	1057	}
andrewbonney	0:ec559500a63f	1058
andrewbonney	0:ec559500a63f	1059	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
andrewbonney	0:ec559500a63f	1060	snmp_inc_ifoutucastpkts(&pc->netif);
andrewbonney	0:ec559500a63f	1061	LINK_STATS_INC(link.xmit);
andrewbonney	0:ec559500a63f	1062	return PPPERR_NONE;
andrewbonney	0:ec559500a63f	1063	}
andrewbonney	0:ec559500a63f	1064	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	1065
andrewbonney	0:ec559500a63f	1066	/*
andrewbonney	0:ec559500a63f	1067	* Write n characters to a ppp link.
andrewbonney	0:ec559500a63f	1068	* RETURN: >= 0 Number of characters written
andrewbonney	0:ec559500a63f	1069	* -1 Failed to write to device
andrewbonney	0:ec559500a63f	1070	*/
andrewbonney	0:ec559500a63f	1071	int
andrewbonney	0:ec559500a63f	1072	pppWrite(int pd, const u_char *s, int n)
andrewbonney	0:ec559500a63f	1073	{
andrewbonney	0:ec559500a63f	1074	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	1075	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	1076	u_char c;
andrewbonney	0:ec559500a63f	1077	u_int fcsOut;
andrewbonney	0:ec559500a63f	1078	struct pbuf headMB, tailMB;
andrewbonney	0:ec559500a63f	1079	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	1080
andrewbonney	0:ec559500a63f	1081	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	1082	if(pc->ethif) {
andrewbonney	0:ec559500a63f	1083	return pppWriteOverEthernet(pd, s, n);
andrewbonney	0:ec559500a63f	1084	}
andrewbonney	0:ec559500a63f	1085	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	1086
andrewbonney	0:ec559500a63f	1087	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	1088	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
andrewbonney	0:ec559500a63f	1089	if (headMB == NULL) {
andrewbonney	0:ec559500a63f	1090	LINK_STATS_INC(link.memerr);
andrewbonney	0:ec559500a63f	1091	LINK_STATS_INC(link.proterr);
andrewbonney	0:ec559500a63f	1092	snmp_inc_ifoutdiscards(&pc->netif);
andrewbonney	0:ec559500a63f	1093	return PPPERR_ALLOC;
andrewbonney	0:ec559500a63f	1094	}
andrewbonney	0:ec559500a63f	1095
andrewbonney	0:ec559500a63f	1096	tailMB = headMB;
andrewbonney	0:ec559500a63f	1097
andrewbonney	0:ec559500a63f	1098	/* If the link has been idle, we'll send a fresh flag character to
andrewbonney	0:ec559500a63f	1099	* flush any noise. */
andrewbonney	0:ec559500a63f	1100	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
andrewbonney	0:ec559500a63f	1101	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
andrewbonney	0:ec559500a63f	1102	}
andrewbonney	0:ec559500a63f	1103	pc->lastXMit = sys_jiffies();
andrewbonney	0:ec559500a63f	1104
andrewbonney	0:ec559500a63f	1105	fcsOut = PPP_INITFCS;
andrewbonney	0:ec559500a63f	1106	/* Load output buffer. */
andrewbonney	0:ec559500a63f	1107	while (n-- > 0) {
andrewbonney	0:ec559500a63f	1108	c = *s++;
andrewbonney	0:ec559500a63f	1109
andrewbonney	0:ec559500a63f	1110	/* Update FCS before checking for special characters. */
andrewbonney	0:ec559500a63f	1111	fcsOut = PPP_FCS(fcsOut, c);
andrewbonney	0:ec559500a63f	1112
andrewbonney	0:ec559500a63f	1113	/* Copy to output buffer escaping special characters. */
andrewbonney	0:ec559500a63f	1114	tailMB = pppAppend(c, tailMB, &pc->outACCM);
andrewbonney	0:ec559500a63f	1115	}
andrewbonney	0:ec559500a63f	1116
andrewbonney	0:ec559500a63f	1117	/* Add FCS and trailing flag. */
andrewbonney	0:ec559500a63f	1118	c = ~fcsOut & 0xFF;
andrewbonney	0:ec559500a63f	1119	tailMB = pppAppend(c, tailMB, &pc->outACCM);
andrewbonney	0:ec559500a63f	1120	c = (~fcsOut >> 8) & 0xFF;
andrewbonney	0:ec559500a63f	1121	tailMB = pppAppend(c, tailMB, &pc->outACCM);
andrewbonney	0:ec559500a63f	1122	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
andrewbonney	0:ec559500a63f	1123
andrewbonney	0:ec559500a63f	1124	/* If we failed to complete the packet, throw it away.
andrewbonney	0:ec559500a63f	1125	* Otherwise send it. */
andrewbonney	0:ec559500a63f	1126	if (!tailMB) {
andrewbonney	0:ec559500a63f	1127	PPPDEBUG(LOG_WARNING,
andrewbonney	0:ec559500a63f	1128	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
andrewbonney	0:ec559500a63f	1129	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
andrewbonney	0:ec559500a63f	1130	pbuf_free(headMB);
andrewbonney	0:ec559500a63f	1131	LINK_STATS_INC(link.memerr);
andrewbonney	0:ec559500a63f	1132	LINK_STATS_INC(link.proterr);
andrewbonney	0:ec559500a63f	1133	snmp_inc_ifoutdiscards(&pc->netif);
andrewbonney	0:ec559500a63f	1134	return PPPERR_ALLOC;
andrewbonney	0:ec559500a63f	1135	}
andrewbonney	0:ec559500a63f	1136
andrewbonney	0:ec559500a63f	1137	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
andrewbonney	0:ec559500a63f	1138	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
andrewbonney	0:ec559500a63f	1139	nPut(pc, headMB);
andrewbonney	0:ec559500a63f	1140	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	1141
andrewbonney	0:ec559500a63f	1142	return PPPERR_NONE;
andrewbonney	0:ec559500a63f	1143	}
andrewbonney	0:ec559500a63f	1144
andrewbonney	0:ec559500a63f	1145	/*
andrewbonney	0:ec559500a63f	1146	* ppp_send_config - configure the transmit characteristics of
andrewbonney	0:ec559500a63f	1147	* the ppp interface.
andrewbonney	0:ec559500a63f	1148	*/
andrewbonney	0:ec559500a63f	1149	void
andrewbonney	0:ec559500a63f	1150	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
andrewbonney	0:ec559500a63f	1151	{
andrewbonney	0:ec559500a63f	1152	PPPControl *pc = &pppControl[unit];
andrewbonney	0:ec559500a63f	1153	int i;
andrewbonney	0:ec559500a63f	1154
andrewbonney	0:ec559500a63f	1155	pc->mtu = mtu;
andrewbonney	0:ec559500a63f	1156	pc->pcomp = pcomp;
andrewbonney	0:ec559500a63f	1157	pc->accomp = accomp;
andrewbonney	0:ec559500a63f	1158
andrewbonney	0:ec559500a63f	1159	/* Load the ACCM bits for the 32 control codes. */
andrewbonney	0:ec559500a63f	1160	for (i = 0; i < 32/8; i++) {
andrewbonney	0:ec559500a63f	1161	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
andrewbonney	0:ec559500a63f	1162	}
andrewbonney	0:ec559500a63f	1163	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
andrewbonney	0:ec559500a63f	1164	unit,
andrewbonney	0:ec559500a63f	1165	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
andrewbonney	0:ec559500a63f	1166	}
andrewbonney	0:ec559500a63f	1167
andrewbonney	0:ec559500a63f	1168
andrewbonney	0:ec559500a63f	1169	/*
andrewbonney	0:ec559500a63f	1170	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
andrewbonney	0:ec559500a63f	1171	*/
andrewbonney	0:ec559500a63f	1172	void
andrewbonney	0:ec559500a63f	1173	ppp_set_xaccm(int unit, ext_accm *accm)
andrewbonney	0:ec559500a63f	1174	{
andrewbonney	0:ec559500a63f	1175	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
andrewbonney	0:ec559500a63f	1176	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
andrewbonney	0:ec559500a63f	1177	unit,
andrewbonney	0:ec559500a63f	1178	pppControl[unit].outACCM[0],
andrewbonney	0:ec559500a63f	1179	pppControl[unit].outACCM[1],
andrewbonney	0:ec559500a63f	1180	pppControl[unit].outACCM[2],
andrewbonney	0:ec559500a63f	1181	pppControl[unit].outACCM[3]));
andrewbonney	0:ec559500a63f	1182	}
andrewbonney	0:ec559500a63f	1183
andrewbonney	0:ec559500a63f	1184
andrewbonney	0:ec559500a63f	1185	/*
andrewbonney	0:ec559500a63f	1186	* ppp_recv_config - configure the receive-side characteristics of
andrewbonney	0:ec559500a63f	1187	* the ppp interface.
andrewbonney	0:ec559500a63f	1188	*/
andrewbonney	0:ec559500a63f	1189	void
andrewbonney	0:ec559500a63f	1190	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
andrewbonney	0:ec559500a63f	1191	{
andrewbonney	0:ec559500a63f	1192	PPPControl *pc = &pppControl[unit];
andrewbonney	0:ec559500a63f	1193	int i;
andrewbonney	0:ec559500a63f	1194	SYS_ARCH_DECL_PROTECT(lev);
andrewbonney	0:ec559500a63f	1195
andrewbonney	0:ec559500a63f	1196	LWIP_UNUSED_ARG(accomp);
andrewbonney	0:ec559500a63f	1197	LWIP_UNUSED_ARG(pcomp);
andrewbonney	0:ec559500a63f	1198	LWIP_UNUSED_ARG(mru);
andrewbonney	0:ec559500a63f	1199
andrewbonney	0:ec559500a63f	1200	/* Load the ACCM bits for the 32 control codes. */
andrewbonney	0:ec559500a63f	1201	SYS_ARCH_PROTECT(lev);
andrewbonney	0:ec559500a63f	1202	for (i = 0; i < 32 / 8; i++) {
andrewbonney	0:ec559500a63f	1203	/* @todo: does this work? ext_accm has been modified from pppd! */
andrewbonney	0:ec559500a63f	1204	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
andrewbonney	0:ec559500a63f	1205	}
andrewbonney	0:ec559500a63f	1206	SYS_ARCH_UNPROTECT(lev);
andrewbonney	0:ec559500a63f	1207	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
andrewbonney	0:ec559500a63f	1208	unit,
andrewbonney	0:ec559500a63f	1209	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
andrewbonney	0:ec559500a63f	1210	}
andrewbonney	0:ec559500a63f	1211
andrewbonney	0:ec559500a63f	1212	#if 0
andrewbonney	0:ec559500a63f	1213	/*
andrewbonney	0:ec559500a63f	1214	* ccp_test - ask kernel whether a given compression method
andrewbonney	0:ec559500a63f	1215	* is acceptable for use. Returns 1 if the method and parameters
andrewbonney	0:ec559500a63f	1216	* are OK, 0 if the method is known but the parameters are not OK
andrewbonney	0:ec559500a63f	1217	* (e.g. code size should be reduced), or -1 if the method is unknown.
andrewbonney	0:ec559500a63f	1218	*/
andrewbonney	0:ec559500a63f	1219	int
andrewbonney	0:ec559500a63f	1220	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
andrewbonney	0:ec559500a63f	1221	{
andrewbonney	0:ec559500a63f	1222	return 0; /* XXX Currently no compression. */
andrewbonney	0:ec559500a63f	1223	}
andrewbonney	0:ec559500a63f	1224
andrewbonney	0:ec559500a63f	1225	/*
andrewbonney	0:ec559500a63f	1226	* ccp_flags_set - inform kernel about the current state of CCP.
andrewbonney	0:ec559500a63f	1227	*/
andrewbonney	0:ec559500a63f	1228	void
andrewbonney	0:ec559500a63f	1229	ccp_flags_set(int unit, int isopen, int isup)
andrewbonney	0:ec559500a63f	1230	{
andrewbonney	0:ec559500a63f	1231	/* XXX */
andrewbonney	0:ec559500a63f	1232	}
andrewbonney	0:ec559500a63f	1233
andrewbonney	0:ec559500a63f	1234	/*
andrewbonney	0:ec559500a63f	1235	* ccp_fatal_error - returns 1 if decompression was disabled as a
andrewbonney	0:ec559500a63f	1236	* result of an error detected after decompression of a packet,
andrewbonney	0:ec559500a63f	1237	* 0 otherwise. This is necessary because of patent nonsense.
andrewbonney	0:ec559500a63f	1238	*/
andrewbonney	0:ec559500a63f	1239	int
andrewbonney	0:ec559500a63f	1240	ccp_fatal_error(int unit)
andrewbonney	0:ec559500a63f	1241	{
andrewbonney	0:ec559500a63f	1242	/* XXX */
andrewbonney	0:ec559500a63f	1243	return 0;
andrewbonney	0:ec559500a63f	1244	}
andrewbonney	0:ec559500a63f	1245	#endif
andrewbonney	0:ec559500a63f	1246
andrewbonney	0:ec559500a63f	1247	/*
andrewbonney	0:ec559500a63f	1248	* get_idle_time - return how long the link has been idle.
andrewbonney	0:ec559500a63f	1249	*/
andrewbonney	0:ec559500a63f	1250	int
andrewbonney	0:ec559500a63f	1251	get_idle_time(int u, struct ppp_idle *ip)
andrewbonney	0:ec559500a63f	1252	{
andrewbonney	0:ec559500a63f	1253	/* XXX */
andrewbonney	0:ec559500a63f	1254	LWIP_UNUSED_ARG(u);
andrewbonney	0:ec559500a63f	1255	LWIP_UNUSED_ARG(ip);
andrewbonney	0:ec559500a63f	1256
andrewbonney	0:ec559500a63f	1257	return 0;
andrewbonney	0:ec559500a63f	1258	}
andrewbonney	0:ec559500a63f	1259
andrewbonney	0:ec559500a63f	1260
andrewbonney	0:ec559500a63f	1261	/*
andrewbonney	0:ec559500a63f	1262	* Return user specified netmask, modified by any mask we might determine
andrewbonney	0:ec559500a63f	1263	* for address `addr' (in network byte order).
andrewbonney	0:ec559500a63f	1264	* Here we scan through the system's list of interfaces, looking for
andrewbonney	0:ec559500a63f	1265	* any non-point-to-point interfaces which might appear to be on the same
andrewbonney	0:ec559500a63f	1266	* network as `addr'. If we find any, we OR in their netmask to the
andrewbonney	0:ec559500a63f	1267	* user-specified netmask.
andrewbonney	0:ec559500a63f	1268	*/
andrewbonney	0:ec559500a63f	1269	u32_t
andrewbonney	0:ec559500a63f	1270	GetMask(u32_t addr)
andrewbonney	0:ec559500a63f	1271	{
andrewbonney	0:ec559500a63f	1272	u32_t mask, nmask;
andrewbonney	0:ec559500a63f	1273
andrewbonney	0:ec559500a63f	1274	htonl(addr);
andrewbonney	0:ec559500a63f	1275	if (IP_CLASSA(addr)) { /* determine network mask for address class */
andrewbonney	0:ec559500a63f	1276	nmask = IP_CLASSA_NET;
andrewbonney	0:ec559500a63f	1277	} else if (IP_CLASSB(addr)) {
andrewbonney	0:ec559500a63f	1278	nmask = IP_CLASSB_NET;
andrewbonney	0:ec559500a63f	1279	} else {
andrewbonney	0:ec559500a63f	1280	nmask = IP_CLASSC_NET;
andrewbonney	0:ec559500a63f	1281	}
andrewbonney	0:ec559500a63f	1282
andrewbonney	0:ec559500a63f	1283	/* class D nets are disallowed by bad_ip_adrs */
andrewbonney	0:ec559500a63f	1284	mask = subnetMask \| htonl(nmask);
andrewbonney	0:ec559500a63f	1285
andrewbonney	0:ec559500a63f	1286	/* XXX
andrewbonney	0:ec559500a63f	1287	* Scan through the system's network interfaces.
andrewbonney	0:ec559500a63f	1288	* Get each netmask and OR them into our mask.
andrewbonney	0:ec559500a63f	1289	*/
andrewbonney	0:ec559500a63f	1290
andrewbonney	0:ec559500a63f	1291	return mask;
andrewbonney	0:ec559500a63f	1292	}
andrewbonney	0:ec559500a63f	1293
andrewbonney	0:ec559500a63f	1294	/*
andrewbonney	0:ec559500a63f	1295	* sifvjcomp - config tcp header compression
andrewbonney	0:ec559500a63f	1296	*/
andrewbonney	0:ec559500a63f	1297	int
andrewbonney	0:ec559500a63f	1298	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
andrewbonney	0:ec559500a63f	1299	{
andrewbonney	0:ec559500a63f	1300	#if PPPOS_SUPPORT && VJ_SUPPORT
andrewbonney	0:ec559500a63f	1301	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	1302
andrewbonney	0:ec559500a63f	1303	pc->vjEnabled = vjcomp;
andrewbonney	0:ec559500a63f	1304	pc->vjComp.compressSlot = cidcomp;
andrewbonney	0:ec559500a63f	1305	pc->vjComp.maxSlotIndex = maxcid;
andrewbonney	0:ec559500a63f	1306	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
andrewbonney	0:ec559500a63f	1307	vjcomp, cidcomp, maxcid));
andrewbonney	0:ec559500a63f	1308	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
andrewbonney	0:ec559500a63f	1309	LWIP_UNUSED_ARG(pd);
andrewbonney	0:ec559500a63f	1310	LWIP_UNUSED_ARG(vjcomp);
andrewbonney	0:ec559500a63f	1311	LWIP_UNUSED_ARG(cidcomp);
andrewbonney	0:ec559500a63f	1312	LWIP_UNUSED_ARG(maxcid);
andrewbonney	0:ec559500a63f	1313	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
andrewbonney	0:ec559500a63f	1314
andrewbonney	0:ec559500a63f	1315	return 0;
andrewbonney	0:ec559500a63f	1316	}
andrewbonney	0:ec559500a63f	1317
andrewbonney	0:ec559500a63f	1318	/*
andrewbonney	0:ec559500a63f	1319	* pppifNetifInit - netif init callback
andrewbonney	0:ec559500a63f	1320	*/
andrewbonney	0:ec559500a63f	1321	static err_t
andrewbonney	0:ec559500a63f	1322	pppifNetifInit(struct netif *netif)
andrewbonney	0:ec559500a63f	1323	{
andrewbonney	0:ec559500a63f	1324	netif->name[0] = 'p';
andrewbonney	0:ec559500a63f	1325	netif->name[1] = 'p';
andrewbonney	0:ec559500a63f	1326	netif->output = pppifOutput;
andrewbonney	0:ec559500a63f	1327	netif->mtu = pppMTU((int)(size_t)netif->state);
andrewbonney	0:ec559500a63f	1328	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
andrewbonney	0:ec559500a63f	1329	#if LWIP_NETIF_HOSTNAME
andrewbonney	0:ec559500a63f	1330	/* @todo: Initialize interface hostname */
andrewbonney	0:ec559500a63f	1331	/* netif_set_hostname(netif, "lwip"); */
andrewbonney	0:ec559500a63f	1332	#endif /* LWIP_NETIF_HOSTNAME */
andrewbonney	0:ec559500a63f	1333	return ERR_OK;
andrewbonney	0:ec559500a63f	1334	}
andrewbonney	0:ec559500a63f	1335
andrewbonney	0:ec559500a63f	1336
andrewbonney	0:ec559500a63f	1337	/*
andrewbonney	0:ec559500a63f	1338	* sifup - Config the interface up and enable IP packets to pass.
andrewbonney	0:ec559500a63f	1339	*/
andrewbonney	0:ec559500a63f	1340	int
andrewbonney	0:ec559500a63f	1341	sifup(int pd)
andrewbonney	0:ec559500a63f	1342	{
andrewbonney	0:ec559500a63f	1343	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	1344	int st = 1;
andrewbonney	0:ec559500a63f	1345
andrewbonney	0:ec559500a63f	1346	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
andrewbonney	0:ec559500a63f	1347	st = 0;
andrewbonney	0:ec559500a63f	1348	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
andrewbonney	0:ec559500a63f	1349	} else {
andrewbonney	0:ec559500a63f	1350	netif_remove(&pc->netif);
andrewbonney	0:ec559500a63f	1351	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
andrewbonney	0:ec559500a63f	1352	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
andrewbonney	0:ec559500a63f	1353	netif_set_up(&pc->netif);
andrewbonney	0:ec559500a63f	1354	pc->if_up = 1;
andrewbonney	0:ec559500a63f	1355	pc->errCode = PPPERR_NONE;
andrewbonney	0:ec559500a63f	1356
andrewbonney	0:ec559500a63f	1357	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
andrewbonney	0:ec559500a63f	1358	if (pc->linkStatusCB) {
andrewbonney	0:ec559500a63f	1359	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
andrewbonney	0:ec559500a63f	1360	}
andrewbonney	0:ec559500a63f	1361	} else {
andrewbonney	0:ec559500a63f	1362	st = 0;
andrewbonney	0:ec559500a63f	1363	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
andrewbonney	0:ec559500a63f	1364	}
andrewbonney	0:ec559500a63f	1365	}
andrewbonney	0:ec559500a63f	1366
andrewbonney	0:ec559500a63f	1367	return st;
andrewbonney	0:ec559500a63f	1368	}
andrewbonney	0:ec559500a63f	1369
andrewbonney	0:ec559500a63f	1370	/*
andrewbonney	0:ec559500a63f	1371	* sifnpmode - Set the mode for handling packets for a given NP.
andrewbonney	0:ec559500a63f	1372	*/
andrewbonney	0:ec559500a63f	1373	int
andrewbonney	0:ec559500a63f	1374	sifnpmode(int u, int proto, enum NPmode mode)
andrewbonney	0:ec559500a63f	1375	{
andrewbonney	0:ec559500a63f	1376	LWIP_UNUSED_ARG(u);
andrewbonney	0:ec559500a63f	1377	LWIP_UNUSED_ARG(proto);
andrewbonney	0:ec559500a63f	1378	LWIP_UNUSED_ARG(mode);
andrewbonney	0:ec559500a63f	1379	return 0;
andrewbonney	0:ec559500a63f	1380	}
andrewbonney	0:ec559500a63f	1381
andrewbonney	0:ec559500a63f	1382	/*
andrewbonney	0:ec559500a63f	1383	* sifdown - Config the interface down and disable IP.
andrewbonney	0:ec559500a63f	1384	*/
andrewbonney	0:ec559500a63f	1385	int
andrewbonney	0:ec559500a63f	1386	sifdown(int pd)
andrewbonney	0:ec559500a63f	1387	{
andrewbonney	0:ec559500a63f	1388	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	1389	int st = 1;
andrewbonney	0:ec559500a63f	1390
andrewbonney	0:ec559500a63f	1391	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
andrewbonney	0:ec559500a63f	1392	st = 0;
andrewbonney	0:ec559500a63f	1393	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
andrewbonney	0:ec559500a63f	1394	} else {
andrewbonney	0:ec559500a63f	1395	pc->if_up = 0;
andrewbonney	0:ec559500a63f	1396	/* make sure the netif status callback is called */
andrewbonney	0:ec559500a63f	1397	netif_set_down(&pc->netif);
andrewbonney	0:ec559500a63f	1398	netif_remove(&pc->netif);
andrewbonney	0:ec559500a63f	1399	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
andrewbonney	0:ec559500a63f	1400	if (pc->linkStatusCB) {
andrewbonney	0:ec559500a63f	1401	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
andrewbonney	0:ec559500a63f	1402	}
andrewbonney	0:ec559500a63f	1403	}
andrewbonney	0:ec559500a63f	1404	return st;
andrewbonney	0:ec559500a63f	1405	}
andrewbonney	0:ec559500a63f	1406
andrewbonney	0:ec559500a63f	1407	/**
andrewbonney	0:ec559500a63f	1408	* sifaddr - Config the interface IP addresses and netmask.
andrewbonney	0:ec559500a63f	1409	* @param pd Interface unit ???
andrewbonney	0:ec559500a63f	1410	* @param o Our IP address ???
andrewbonney	0:ec559500a63f	1411	* @param h His IP address ???
andrewbonney	0:ec559500a63f	1412	* @param m IP subnet mask ???
andrewbonney	0:ec559500a63f	1413	* @param ns1 Primary DNS
andrewbonney	0:ec559500a63f	1414	* @param ns2 Secondary DNS
andrewbonney	0:ec559500a63f	1415	*/
andrewbonney	0:ec559500a63f	1416	int
andrewbonney	0:ec559500a63f	1417	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
andrewbonney	0:ec559500a63f	1418	{
andrewbonney	0:ec559500a63f	1419	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	1420	int st = 1;
andrewbonney	0:ec559500a63f	1421
andrewbonney	0:ec559500a63f	1422	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
andrewbonney	0:ec559500a63f	1423	st = 0;
andrewbonney	0:ec559500a63f	1424	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
andrewbonney	0:ec559500a63f	1425	} else {
andrewbonney	0:ec559500a63f	1426	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
andrewbonney	0:ec559500a63f	1427	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
andrewbonney	0:ec559500a63f	1428	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
andrewbonney	0:ec559500a63f	1429	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
andrewbonney	0:ec559500a63f	1430	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
andrewbonney	0:ec559500a63f	1431	}
andrewbonney	0:ec559500a63f	1432	return st;
andrewbonney	0:ec559500a63f	1433	}
andrewbonney	0:ec559500a63f	1434
andrewbonney	0:ec559500a63f	1435	/**
andrewbonney	0:ec559500a63f	1436	* cifaddr - Clear the interface IP addresses, and delete routes
andrewbonney	0:ec559500a63f	1437	* through the interface if possible.
andrewbonney	0:ec559500a63f	1438	* @param pd Interface unit ???
andrewbonney	0:ec559500a63f	1439	* @param o Our IP address ???
andrewbonney	0:ec559500a63f	1440	* @param h IP broadcast address ???
andrewbonney	0:ec559500a63f	1441	*/
andrewbonney	0:ec559500a63f	1442	int
andrewbonney	0:ec559500a63f	1443	cifaddr( int pd, u32_t o, u32_t h)
andrewbonney	0:ec559500a63f	1444	{
andrewbonney	0:ec559500a63f	1445	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	1446	int st = 1;
andrewbonney	0:ec559500a63f	1447
andrewbonney	0:ec559500a63f	1448	LWIP_UNUSED_ARG(o);
andrewbonney	0:ec559500a63f	1449	LWIP_UNUSED_ARG(h);
andrewbonney	0:ec559500a63f	1450	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
andrewbonney	0:ec559500a63f	1451	st = 0;
andrewbonney	0:ec559500a63f	1452	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
andrewbonney	0:ec559500a63f	1453	} else {
andrewbonney	0:ec559500a63f	1454	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
andrewbonney	0:ec559500a63f	1455	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
andrewbonney	0:ec559500a63f	1456	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
andrewbonney	0:ec559500a63f	1457	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
andrewbonney	0:ec559500a63f	1458	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
andrewbonney	0:ec559500a63f	1459	}
andrewbonney	0:ec559500a63f	1460	return st;
andrewbonney	0:ec559500a63f	1461	}
andrewbonney	0:ec559500a63f	1462
andrewbonney	0:ec559500a63f	1463	/*
andrewbonney	0:ec559500a63f	1464	* sifdefaultroute - assign a default route through the address given.
andrewbonney	0:ec559500a63f	1465	*/
andrewbonney	0:ec559500a63f	1466	int
andrewbonney	0:ec559500a63f	1467	sifdefaultroute(int pd, u32_t l, u32_t g)
andrewbonney	0:ec559500a63f	1468	{
andrewbonney	0:ec559500a63f	1469	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	1470	int st = 1;
andrewbonney	0:ec559500a63f	1471
andrewbonney	0:ec559500a63f	1472	LWIP_UNUSED_ARG(l);
andrewbonney	0:ec559500a63f	1473	LWIP_UNUSED_ARG(g);
andrewbonney	0:ec559500a63f	1474
andrewbonney	0:ec559500a63f	1475	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
andrewbonney	0:ec559500a63f	1476	st = 0;
andrewbonney	0:ec559500a63f	1477	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
andrewbonney	0:ec559500a63f	1478	} else {
andrewbonney	0:ec559500a63f	1479	netif_set_default(&pc->netif);
andrewbonney	0:ec559500a63f	1480	}
andrewbonney	0:ec559500a63f	1481
andrewbonney	0:ec559500a63f	1482	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
andrewbonney	0:ec559500a63f	1483
andrewbonney	0:ec559500a63f	1484	return st;
andrewbonney	0:ec559500a63f	1485	}
andrewbonney	0:ec559500a63f	1486
andrewbonney	0:ec559500a63f	1487	/*
andrewbonney	0:ec559500a63f	1488	* cifdefaultroute - delete a default route through the address given.
andrewbonney	0:ec559500a63f	1489	*/
andrewbonney	0:ec559500a63f	1490	int
andrewbonney	0:ec559500a63f	1491	cifdefaultroute(int pd, u32_t l, u32_t g)
andrewbonney	0:ec559500a63f	1492	{
andrewbonney	0:ec559500a63f	1493	PPPControl *pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	1494	int st = 1;
andrewbonney	0:ec559500a63f	1495
andrewbonney	0:ec559500a63f	1496	LWIP_UNUSED_ARG(l);
andrewbonney	0:ec559500a63f	1497	LWIP_UNUSED_ARG(g);
andrewbonney	0:ec559500a63f	1498
andrewbonney	0:ec559500a63f	1499	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
andrewbonney	0:ec559500a63f	1500	st = 0;
andrewbonney	0:ec559500a63f	1501	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
andrewbonney	0:ec559500a63f	1502	} else {
andrewbonney	0:ec559500a63f	1503	netif_set_default(NULL);
andrewbonney	0:ec559500a63f	1504	}
andrewbonney	0:ec559500a63f	1505
andrewbonney	0:ec559500a63f	1506	return st;
andrewbonney	0:ec559500a63f	1507	}
andrewbonney	0:ec559500a63f	1508
andrewbonney	0:ec559500a63f	1509	/**********************************/
andrewbonney	0:ec559500a63f	1510	/* LOCAL FUNCTION DEFINITIONS */
andrewbonney	0:ec559500a63f	1511	/**********************************/
andrewbonney	0:ec559500a63f	1512
andrewbonney	0:ec559500a63f	1513	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
andrewbonney	0:ec559500a63f	1514	/* The main PPP process function. This implements the state machine according
andrewbonney	0:ec559500a63f	1515	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
andrewbonney	0:ec559500a63f	1516	static void
andrewbonney	0:ec559500a63f	1517	pppInputThread(void *arg)
andrewbonney	0:ec559500a63f	1518	{
andrewbonney	0:ec559500a63f	1519	int count;
andrewbonney	0:ec559500a63f	1520	PPPControlRx *pcrx = arg;
andrewbonney	0:ec559500a63f	1521
andrewbonney	0:ec559500a63f	1522	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
andrewbonney	0:ec559500a63f	1523	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
andrewbonney	0:ec559500a63f	1524	if(count > 0) {
andrewbonney	0:ec559500a63f	1525	pppInProc(pcrx, pcrx->rxbuf, count);
andrewbonney	0:ec559500a63f	1526	} else {
andrewbonney	0:ec559500a63f	1527	/* nothing received, give other tasks a chance to run */
andrewbonney	0:ec559500a63f	1528	sys_msleep(1);
andrewbonney	0:ec559500a63f	1529	}
andrewbonney	0:ec559500a63f	1530	}
andrewbonney	0:ec559500a63f	1531	}
andrewbonney	0:ec559500a63f	1532	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
andrewbonney	0:ec559500a63f	1533
andrewbonney	0:ec559500a63f	1534	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	1535
andrewbonney	0:ec559500a63f	1536	void
andrewbonney	0:ec559500a63f	1537	pppOverEthernetInitFailed(int pd)
andrewbonney	0:ec559500a63f	1538	{
andrewbonney	0:ec559500a63f	1539	PPPControl* pc;
andrewbonney	0:ec559500a63f	1540
andrewbonney	0:ec559500a63f	1541	pppHup(pd);
andrewbonney	0:ec559500a63f	1542	pppStop(pd);
andrewbonney	0:ec559500a63f	1543
andrewbonney	0:ec559500a63f	1544	pc = &pppControl[pd];
andrewbonney	0:ec559500a63f	1545	pppoe_destroy(&pc->netif);
andrewbonney	0:ec559500a63f	1546	pc->openFlag = 0;
andrewbonney	0:ec559500a63f	1547
andrewbonney	0:ec559500a63f	1548	if(pc->linkStatusCB) {
andrewbonney	0:ec559500a63f	1549	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
andrewbonney	0:ec559500a63f	1550	}
andrewbonney	0:ec559500a63f	1551	}
andrewbonney	0:ec559500a63f	1552
andrewbonney	0:ec559500a63f	1553	static void
andrewbonney	0:ec559500a63f	1554	pppOverEthernetLinkStatusCB(int pd, int up)
andrewbonney	0:ec559500a63f	1555	{
andrewbonney	0:ec559500a63f	1556	if(up) {
andrewbonney	0:ec559500a63f	1557	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
andrewbonney	0:ec559500a63f	1558	pppStart(pd);
andrewbonney	0:ec559500a63f	1559	} else {
andrewbonney	0:ec559500a63f	1560	pppOverEthernetInitFailed(pd);
andrewbonney	0:ec559500a63f	1561	}
andrewbonney	0:ec559500a63f	1562	}
andrewbonney	0:ec559500a63f	1563	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	1564
andrewbonney	0:ec559500a63f	1565	struct pbuf *
andrewbonney	0:ec559500a63f	1566	pppSingleBuf(struct pbuf *p)
andrewbonney	0:ec559500a63f	1567	{
andrewbonney	0:ec559500a63f	1568	struct pbuf q, b;
andrewbonney	0:ec559500a63f	1569	u_char *pl;
andrewbonney	0:ec559500a63f	1570
andrewbonney	0:ec559500a63f	1571	if(p->tot_len == p->len) {
andrewbonney	0:ec559500a63f	1572	return p;
andrewbonney	0:ec559500a63f	1573	}
andrewbonney	0:ec559500a63f	1574
andrewbonney	0:ec559500a63f	1575	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
andrewbonney	0:ec559500a63f	1576	if(!q) {
andrewbonney	0:ec559500a63f	1577	PPPDEBUG(LOG_ERR,
andrewbonney	0:ec559500a63f	1578	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
andrewbonney	0:ec559500a63f	1579	return p; /* live dangerously */
andrewbonney	0:ec559500a63f	1580	}
andrewbonney	0:ec559500a63f	1581
andrewbonney	0:ec559500a63f	1582	for(b = p, pl = (u_char *) q->payload; b != NULL; b = b->next) {
andrewbonney	0:ec559500a63f	1583	MEMCPY(pl, b->payload, b->len);
andrewbonney	0:ec559500a63f	1584	pl += b->len;
andrewbonney	0:ec559500a63f	1585	}
andrewbonney	0:ec559500a63f	1586
andrewbonney	0:ec559500a63f	1587	pbuf_free(p);
andrewbonney	0:ec559500a63f	1588
andrewbonney	0:ec559500a63f	1589	return q;
andrewbonney	0:ec559500a63f	1590	}
andrewbonney	0:ec559500a63f	1591
andrewbonney	0:ec559500a63f	1592	struct pppInputHeader {
andrewbonney	0:ec559500a63f	1593	int unit;
andrewbonney	0:ec559500a63f	1594	u16_t proto;
andrewbonney	0:ec559500a63f	1595	};
andrewbonney	0:ec559500a63f	1596
andrewbonney	0:ec559500a63f	1597	/*
andrewbonney	0:ec559500a63f	1598	* Pass the processed input packet to the appropriate handler.
andrewbonney	0:ec559500a63f	1599	* This function and all handlers run in the context of the tcpip_thread
andrewbonney	0:ec559500a63f	1600	*/
andrewbonney	0:ec559500a63f	1601	static void
andrewbonney	0:ec559500a63f	1602	pppInput(void *arg)
andrewbonney	0:ec559500a63f	1603	{
andrewbonney	0:ec559500a63f	1604	struct pbuf nb = (struct pbuf )arg;
andrewbonney	0:ec559500a63f	1605	u16_t protocol;
andrewbonney	0:ec559500a63f	1606	int pd;
andrewbonney	0:ec559500a63f	1607
andrewbonney	0:ec559500a63f	1608	pd = ((struct pppInputHeader *)nb->payload)->unit;
andrewbonney	0:ec559500a63f	1609	protocol = ((struct pppInputHeader *)nb->payload)->proto;
andrewbonney	0:ec559500a63f	1610
andrewbonney	0:ec559500a63f	1611	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
andrewbonney	0:ec559500a63f	1612	LWIP_ASSERT("pbuf_header failed\n", 0);
andrewbonney	0:ec559500a63f	1613	goto drop;
andrewbonney	0:ec559500a63f	1614	}
andrewbonney	0:ec559500a63f	1615
andrewbonney	0:ec559500a63f	1616	LINK_STATS_INC(link.recv);
andrewbonney	0:ec559500a63f	1617	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
andrewbonney	0:ec559500a63f	1618	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
andrewbonney	0:ec559500a63f	1619
andrewbonney	0:ec559500a63f	1620	/*
andrewbonney	0:ec559500a63f	1621	* Toss all non-LCP packets unless LCP is OPEN.
andrewbonney	0:ec559500a63f	1622	* Until we get past the authentication phase, toss all packets
andrewbonney	0:ec559500a63f	1623	* except LCP, LQR and authentication packets.
andrewbonney	0:ec559500a63f	1624	*/
andrewbonney	0:ec559500a63f	1625	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
andrewbonney	0:ec559500a63f	1626	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
andrewbonney	0:ec559500a63f	1627	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
andrewbonney	0:ec559500a63f	1628	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
andrewbonney	0:ec559500a63f	1629	goto drop;
andrewbonney	0:ec559500a63f	1630	}
andrewbonney	0:ec559500a63f	1631	}
andrewbonney	0:ec559500a63f	1632
andrewbonney	0:ec559500a63f	1633	switch(protocol) {
andrewbonney	0:ec559500a63f	1634	case PPP_VJC_COMP: /* VJ compressed TCP */
andrewbonney	0:ec559500a63f	1635	#if PPPOS_SUPPORT && VJ_SUPPORT
andrewbonney	0:ec559500a63f	1636	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
andrewbonney	0:ec559500a63f	1637	/*
andrewbonney	0:ec559500a63f	1638	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
andrewbonney	0:ec559500a63f	1639	* pass the result to IP.
andrewbonney	0:ec559500a63f	1640	*/
andrewbonney	0:ec559500a63f	1641	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
andrewbonney	0:ec559500a63f	1642	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
andrewbonney	0:ec559500a63f	1643	return;
andrewbonney	0:ec559500a63f	1644	}
andrewbonney	0:ec559500a63f	1645	/* Something's wrong so drop it. */
andrewbonney	0:ec559500a63f	1646	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
andrewbonney	0:ec559500a63f	1647	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
andrewbonney	0:ec559500a63f	1648	/* No handler for this protocol so drop the packet. */
andrewbonney	0:ec559500a63f	1649	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
andrewbonney	0:ec559500a63f	1650	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
andrewbonney	0:ec559500a63f	1651	break;
andrewbonney	0:ec559500a63f	1652
andrewbonney	0:ec559500a63f	1653	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
andrewbonney	0:ec559500a63f	1654	#if PPPOS_SUPPORT && VJ_SUPPORT
andrewbonney	0:ec559500a63f	1655	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
andrewbonney	0:ec559500a63f	1656	/*
andrewbonney	0:ec559500a63f	1657	* Process the TCP/IP header for VJ header compression and then pass
andrewbonney	0:ec559500a63f	1658	* the packet to IP.
andrewbonney	0:ec559500a63f	1659	*/
andrewbonney	0:ec559500a63f	1660	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
andrewbonney	0:ec559500a63f	1661	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
andrewbonney	0:ec559500a63f	1662	return;
andrewbonney	0:ec559500a63f	1663	}
andrewbonney	0:ec559500a63f	1664	/* Something's wrong so drop it. */
andrewbonney	0:ec559500a63f	1665	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
andrewbonney	0:ec559500a63f	1666	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
andrewbonney	0:ec559500a63f	1667	/* No handler for this protocol so drop the packet. */
andrewbonney	0:ec559500a63f	1668	PPPDEBUG(LOG_INFO,
andrewbonney	0:ec559500a63f	1669	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
andrewbonney	0:ec559500a63f	1670	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
andrewbonney	0:ec559500a63f	1671	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
andrewbonney	0:ec559500a63f	1672	break;
andrewbonney	0:ec559500a63f	1673
andrewbonney	0:ec559500a63f	1674	case PPP_IP: /* Internet Protocol */
andrewbonney	0:ec559500a63f	1675	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
andrewbonney	0:ec559500a63f	1676	if (pppControl[pd].netif.input) {
andrewbonney	0:ec559500a63f	1677	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
andrewbonney	0:ec559500a63f	1678	return;
andrewbonney	0:ec559500a63f	1679	}
andrewbonney	0:ec559500a63f	1680	break;
andrewbonney	0:ec559500a63f	1681
andrewbonney	0:ec559500a63f	1682	default: {
andrewbonney	0:ec559500a63f	1683	struct protent *protp;
andrewbonney	0:ec559500a63f	1684	int i;
andrewbonney	0:ec559500a63f	1685
andrewbonney	0:ec559500a63f	1686	/*
andrewbonney	0:ec559500a63f	1687	* Upcall the proper protocol input routine.
andrewbonney	0:ec559500a63f	1688	*/
andrewbonney	0:ec559500a63f	1689	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
andrewbonney	0:ec559500a63f	1690	if (protp->protocol == protocol && protp->enabled_flag) {
andrewbonney	0:ec559500a63f	1691	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
andrewbonney	0:ec559500a63f	1692	nb = pppSingleBuf(nb);
andrewbonney	0:ec559500a63f	1693	(protp->input)(pd, (u_char )nb->payload, nb->len);
andrewbonney	0:ec559500a63f	1694	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
andrewbonney	0:ec559500a63f	1695	goto out;
andrewbonney	0:ec559500a63f	1696	}
andrewbonney	0:ec559500a63f	1697	}
andrewbonney	0:ec559500a63f	1698
andrewbonney	0:ec559500a63f	1699	/* No handler for this protocol so reject the packet. */
andrewbonney	0:ec559500a63f	1700	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
andrewbonney	0:ec559500a63f	1701	if (pbuf_header(nb, sizeof(protocol))) {
andrewbonney	0:ec559500a63f	1702	LWIP_ASSERT("pbuf_header failed\n", 0);
andrewbonney	0:ec559500a63f	1703	goto drop;
andrewbonney	0:ec559500a63f	1704	}
andrewbonney	0:ec559500a63f	1705	#if BYTE_ORDER == LITTLE_ENDIAN
andrewbonney	0:ec559500a63f	1706	protocol = htons(protocol);
andrewbonney	0:ec559500a63f	1707	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
andrewbonney	0:ec559500a63f	1708	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
andrewbonney	0:ec559500a63f	1709	lcp_sprotrej(pd, (u_char *)nb->payload, nb->len);
andrewbonney	0:ec559500a63f	1710	}
andrewbonney	0:ec559500a63f	1711	break;
andrewbonney	0:ec559500a63f	1712	}
andrewbonney	0:ec559500a63f	1713
andrewbonney	0:ec559500a63f	1714	drop:
andrewbonney	0:ec559500a63f	1715	LINK_STATS_INC(link.drop);
andrewbonney	0:ec559500a63f	1716	snmp_inc_ifindiscards(&pppControl[pd].netif);
andrewbonney	0:ec559500a63f	1717
andrewbonney	0:ec559500a63f	1718	out:
andrewbonney	0:ec559500a63f	1719	pbuf_free(nb);
andrewbonney	0:ec559500a63f	1720	return;
andrewbonney	0:ec559500a63f	1721	}
andrewbonney	0:ec559500a63f	1722
andrewbonney	0:ec559500a63f	1723	#if PPPOS_SUPPORT
andrewbonney	0:ec559500a63f	1724	/*
andrewbonney	0:ec559500a63f	1725	* Drop the input packet.
andrewbonney	0:ec559500a63f	1726	*/
andrewbonney	0:ec559500a63f	1727	static void
andrewbonney	0:ec559500a63f	1728	pppDrop(PPPControlRx *pcrx)
andrewbonney	0:ec559500a63f	1729	{
andrewbonney	0:ec559500a63f	1730	if (pcrx->inHead != NULL) {
andrewbonney	0:ec559500a63f	1731	#if 0
andrewbonney	0:ec559500a63f	1732	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
andrewbonney	0:ec559500a63f	1733	#endif
andrewbonney	0:ec559500a63f	1734	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
andrewbonney	0:ec559500a63f	1735	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
andrewbonney	0:ec559500a63f	1736	pbuf_free(pcrx->inTail);
andrewbonney	0:ec559500a63f	1737	}
andrewbonney	0:ec559500a63f	1738	pbuf_free(pcrx->inHead);
andrewbonney	0:ec559500a63f	1739	pcrx->inHead = NULL;
andrewbonney	0:ec559500a63f	1740	pcrx->inTail = NULL;
andrewbonney	0:ec559500a63f	1741	}
andrewbonney	0:ec559500a63f	1742	#if VJ_SUPPORT
andrewbonney	0:ec559500a63f	1743	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
andrewbonney	0:ec559500a63f	1744	#endif /* VJ_SUPPORT */
andrewbonney	0:ec559500a63f	1745
andrewbonney	0:ec559500a63f	1746	LINK_STATS_INC(link.drop);
andrewbonney	0:ec559500a63f	1747	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
andrewbonney	0:ec559500a63f	1748	}
andrewbonney	0:ec559500a63f	1749
andrewbonney	0:ec559500a63f	1750	/** Pass received raw characters to PPPoS to be decoded. This function is
andrewbonney	0:ec559500a63f	1751	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
andrewbonney	0:ec559500a63f	1752	*
andrewbonney	0:ec559500a63f	1753	* @param pd PPP descriptor index, returned by pppOpen()
andrewbonney	0:ec559500a63f	1754	* @param data received data
andrewbonney	0:ec559500a63f	1755	* @param len length of received data
andrewbonney	0:ec559500a63f	1756	*/
andrewbonney	0:ec559500a63f	1757	void
andrewbonney	0:ec559500a63f	1758	pppos_input(int pd, u_char* data, int len)
andrewbonney	0:ec559500a63f	1759	{
andrewbonney	0:ec559500a63f	1760	pppInProc(&pppControl[pd].rx, data, len);
andrewbonney	0:ec559500a63f	1761	}
andrewbonney	0:ec559500a63f	1762
andrewbonney	0:ec559500a63f	1763	/**
andrewbonney	0:ec559500a63f	1764	* Process a received octet string.
andrewbonney	0:ec559500a63f	1765	*/
andrewbonney	0:ec559500a63f	1766	static void
andrewbonney	0:ec559500a63f	1767	pppInProc(PPPControlRx pcrx, u_char s, int l)
andrewbonney	0:ec559500a63f	1768	{
andrewbonney	0:ec559500a63f	1769	struct pbuf *nextNBuf;
andrewbonney	0:ec559500a63f	1770	u_char curChar;
andrewbonney	0:ec559500a63f	1771	u_char escaped;
andrewbonney	0:ec559500a63f	1772	SYS_ARCH_DECL_PROTECT(lev);
andrewbonney	0:ec559500a63f	1773
andrewbonney	0:ec559500a63f	1774	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
andrewbonney	0:ec559500a63f	1775	while (l-- > 0) {
andrewbonney	0:ec559500a63f	1776	curChar = *s++;
andrewbonney	0:ec559500a63f	1777
andrewbonney	0:ec559500a63f	1778	SYS_ARCH_PROTECT(lev);
andrewbonney	0:ec559500a63f	1779	escaped = ESCAPE_P(pcrx->inACCM, curChar);
andrewbonney	0:ec559500a63f	1780	SYS_ARCH_UNPROTECT(lev);
andrewbonney	0:ec559500a63f	1781	/* Handle special characters. */
andrewbonney	0:ec559500a63f	1782	if (escaped) {
andrewbonney	0:ec559500a63f	1783	/* Check for escape sequences. */
andrewbonney	0:ec559500a63f	1784	/* XXX Note that this does not handle an escaped 0x5d character which
andrewbonney	0:ec559500a63f	1785	* would appear as an escape character. Since this is an ASCII ']'
andrewbonney	0:ec559500a63f	1786	* and there is no reason that I know of to escape it, I won't complicate
andrewbonney	0:ec559500a63f	1787	* the code to handle this case. GLL */
andrewbonney	0:ec559500a63f	1788	if (curChar == PPP_ESCAPE) {
andrewbonney	0:ec559500a63f	1789	pcrx->inEscaped = 1;
andrewbonney	0:ec559500a63f	1790	/* Check for the flag character. */
andrewbonney	0:ec559500a63f	1791	} else if (curChar == PPP_FLAG) {
andrewbonney	0:ec559500a63f	1792	/* If this is just an extra flag character, ignore it. */
andrewbonney	0:ec559500a63f	1793	if (pcrx->inState <= PDADDRESS) {
andrewbonney	0:ec559500a63f	1794	/* ignore it */;
andrewbonney	0:ec559500a63f	1795	/* If we haven't received the packet header, drop what has come in. */
andrewbonney	0:ec559500a63f	1796	} else if (pcrx->inState < PDDATA) {
andrewbonney	0:ec559500a63f	1797	PPPDEBUG(LOG_WARNING,
andrewbonney	0:ec559500a63f	1798	("pppInProc[%d]: Dropping incomplete packet %d\n",
andrewbonney	0:ec559500a63f	1799	pcrx->pd, pcrx->inState));
andrewbonney	0:ec559500a63f	1800	LINK_STATS_INC(link.lenerr);
andrewbonney	0:ec559500a63f	1801	pppDrop(pcrx);
andrewbonney	0:ec559500a63f	1802	/* If the fcs is invalid, drop the packet. */
andrewbonney	0:ec559500a63f	1803	} else if (pcrx->inFCS != PPP_GOODFCS) {
andrewbonney	0:ec559500a63f	1804	PPPDEBUG(LOG_INFO,
andrewbonney	0:ec559500a63f	1805	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
andrewbonney	0:ec559500a63f	1806	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
andrewbonney	0:ec559500a63f	1807	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
andrewbonney	0:ec559500a63f	1808	LINK_STATS_INC(link.chkerr);
andrewbonney	0:ec559500a63f	1809	pppDrop(pcrx);
andrewbonney	0:ec559500a63f	1810	/* Otherwise it's a good packet so pass it on. */
andrewbonney	0:ec559500a63f	1811	} else {
andrewbonney	0:ec559500a63f	1812	/* Trim off the checksum. */
andrewbonney	0:ec559500a63f	1813	if(pcrx->inTail->len >= 2) {
andrewbonney	0:ec559500a63f	1814	pcrx->inTail->len -= 2;
andrewbonney	0:ec559500a63f	1815
andrewbonney	0:ec559500a63f	1816	pcrx->inTail->tot_len = pcrx->inTail->len;
andrewbonney	0:ec559500a63f	1817	if (pcrx->inTail != pcrx->inHead) {
andrewbonney	0:ec559500a63f	1818	pbuf_cat(pcrx->inHead, pcrx->inTail);
andrewbonney	0:ec559500a63f	1819	}
andrewbonney	0:ec559500a63f	1820	} else {
andrewbonney	0:ec559500a63f	1821	pcrx->inTail->tot_len = pcrx->inTail->len;
andrewbonney	0:ec559500a63f	1822	if (pcrx->inTail != pcrx->inHead) {
andrewbonney	0:ec559500a63f	1823	pbuf_cat(pcrx->inHead, pcrx->inTail);
andrewbonney	0:ec559500a63f	1824	}
andrewbonney	0:ec559500a63f	1825
andrewbonney	0:ec559500a63f	1826	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
andrewbonney	0:ec559500a63f	1827	}
andrewbonney	0:ec559500a63f	1828
andrewbonney	0:ec559500a63f	1829	/* Dispatch the packet thereby consuming it. */
andrewbonney	0:ec559500a63f	1830	#if PPP_INPROC_MULTITHREADED
andrewbonney	0:ec559500a63f	1831	if(tcpip_callback_with_block(pppInput, pcrx->inHead, 0) != ERR_OK) {
andrewbonney	0:ec559500a63f	1832	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
andrewbonney	0:ec559500a63f	1833	pbuf_free(pcrx->inHead);
andrewbonney	0:ec559500a63f	1834	LINK_STATS_INC(link.drop);
andrewbonney	0:ec559500a63f	1835	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
andrewbonney	0:ec559500a63f	1836	}
andrewbonney	0:ec559500a63f	1837	#else /* PPP_INPROC_MULTITHREADED */
andrewbonney	0:ec559500a63f	1838	pppInput(pcrx->inHead);
andrewbonney	0:ec559500a63f	1839	#endif /* PPP_INPROC_MULTITHREADED */
andrewbonney	0:ec559500a63f	1840	pcrx->inHead = NULL;
andrewbonney	0:ec559500a63f	1841	pcrx->inTail = NULL;
andrewbonney	0:ec559500a63f	1842	}
andrewbonney	0:ec559500a63f	1843
andrewbonney	0:ec559500a63f	1844	/* Prepare for a new packet. */
andrewbonney	0:ec559500a63f	1845	pcrx->inFCS = PPP_INITFCS;
andrewbonney	0:ec559500a63f	1846	pcrx->inState = PDADDRESS;
andrewbonney	0:ec559500a63f	1847	pcrx->inEscaped = 0;
andrewbonney	0:ec559500a63f	1848	/* Other characters are usually control characters that may have
andrewbonney	0:ec559500a63f	1849	* been inserted by the physical layer so here we just drop them. */
andrewbonney	0:ec559500a63f	1850	} else {
andrewbonney	0:ec559500a63f	1851	PPPDEBUG(LOG_WARNING,
andrewbonney	0:ec559500a63f	1852	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
andrewbonney	0:ec559500a63f	1853	}
andrewbonney	0:ec559500a63f	1854	/* Process other characters. */
andrewbonney	0:ec559500a63f	1855	} else {
andrewbonney	0:ec559500a63f	1856	/* Unencode escaped characters. */
andrewbonney	0:ec559500a63f	1857	if (pcrx->inEscaped) {
andrewbonney	0:ec559500a63f	1858	pcrx->inEscaped = 0;
andrewbonney	0:ec559500a63f	1859	curChar ^= PPP_TRANS;
andrewbonney	0:ec559500a63f	1860	}
andrewbonney	0:ec559500a63f	1861
andrewbonney	0:ec559500a63f	1862	/* Process character relative to current state. */
andrewbonney	0:ec559500a63f	1863	switch(pcrx->inState) {
andrewbonney	0:ec559500a63f	1864	case PDIDLE: /* Idle state - waiting. */
andrewbonney	0:ec559500a63f	1865	/* Drop the character if it's not 0xff
andrewbonney	0:ec559500a63f	1866	* we would have processed a flag character above. */
andrewbonney	0:ec559500a63f	1867	if (curChar != PPP_ALLSTATIONS) {
andrewbonney	0:ec559500a63f	1868	break;
andrewbonney	0:ec559500a63f	1869	}
andrewbonney	0:ec559500a63f	1870
andrewbonney	0:ec559500a63f	1871	/* Fall through */
andrewbonney	0:ec559500a63f	1872	case PDSTART: /* Process start flag. */
andrewbonney	0:ec559500a63f	1873	/* Prepare for a new packet. */
andrewbonney	0:ec559500a63f	1874	pcrx->inFCS = PPP_INITFCS;
andrewbonney	0:ec559500a63f	1875
andrewbonney	0:ec559500a63f	1876	/* Fall through */
andrewbonney	0:ec559500a63f	1877	case PDADDRESS: /* Process address field. */
andrewbonney	0:ec559500a63f	1878	if (curChar == PPP_ALLSTATIONS) {
andrewbonney	0:ec559500a63f	1879	pcrx->inState = PDCONTROL;
andrewbonney	0:ec559500a63f	1880	break;
andrewbonney	0:ec559500a63f	1881	}
andrewbonney	0:ec559500a63f	1882	/* Else assume compressed address and control fields so
andrewbonney	0:ec559500a63f	1883	* fall through to get the protocol... */
andrewbonney	0:ec559500a63f	1884	case PDCONTROL: /* Process control field. */
andrewbonney	0:ec559500a63f	1885	/* If we don't get a valid control code, restart. */
andrewbonney	0:ec559500a63f	1886	if (curChar == PPP_UI) {
andrewbonney	0:ec559500a63f	1887	pcrx->inState = PDPROTOCOL1;
andrewbonney	0:ec559500a63f	1888	break;
andrewbonney	0:ec559500a63f	1889	}
andrewbonney	0:ec559500a63f	1890	#if 0
andrewbonney	0:ec559500a63f	1891	else {
andrewbonney	0:ec559500a63f	1892	PPPDEBUG(LOG_WARNING,
andrewbonney	0:ec559500a63f	1893	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
andrewbonney	0:ec559500a63f	1894	pcrx->inState = PDSTART;
andrewbonney	0:ec559500a63f	1895	}
andrewbonney	0:ec559500a63f	1896	#endif
andrewbonney	0:ec559500a63f	1897	case PDPROTOCOL1: /* Process protocol field 1. */
andrewbonney	0:ec559500a63f	1898	/* If the lower bit is set, this is the end of the protocol
andrewbonney	0:ec559500a63f	1899	* field. */
andrewbonney	0:ec559500a63f	1900	if (curChar & 1) {
andrewbonney	0:ec559500a63f	1901	pcrx->inProtocol = curChar;
andrewbonney	0:ec559500a63f	1902	pcrx->inState = PDDATA;
andrewbonney	0:ec559500a63f	1903	} else {
andrewbonney	0:ec559500a63f	1904	pcrx->inProtocol = (u_int)curChar << 8;
andrewbonney	0:ec559500a63f	1905	pcrx->inState = PDPROTOCOL2;
andrewbonney	0:ec559500a63f	1906	}
andrewbonney	0:ec559500a63f	1907	break;
andrewbonney	0:ec559500a63f	1908	case PDPROTOCOL2: /* Process protocol field 2. */
andrewbonney	0:ec559500a63f	1909	pcrx->inProtocol \|= curChar;
andrewbonney	0:ec559500a63f	1910	pcrx->inState = PDDATA;
andrewbonney	0:ec559500a63f	1911	break;
andrewbonney	0:ec559500a63f	1912	case PDDATA: /* Process data byte. */
andrewbonney	0:ec559500a63f	1913	/* Make space to receive processed data. */
andrewbonney	0:ec559500a63f	1914	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
andrewbonney	0:ec559500a63f	1915	if(pcrx->inTail) {
andrewbonney	0:ec559500a63f	1916	pcrx->inTail->tot_len = pcrx->inTail->len;
andrewbonney	0:ec559500a63f	1917	if (pcrx->inTail != pcrx->inHead) {
andrewbonney	0:ec559500a63f	1918	pbuf_cat(pcrx->inHead, pcrx->inTail);
andrewbonney	0:ec559500a63f	1919	}
andrewbonney	0:ec559500a63f	1920	}
andrewbonney	0:ec559500a63f	1921	/* If we haven't started a packet, we need a packet header. */
andrewbonney	0:ec559500a63f	1922	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
andrewbonney	0:ec559500a63f	1923	if (nextNBuf == NULL) {
andrewbonney	0:ec559500a63f	1924	/* No free buffers. Drop the input packet and let the
andrewbonney	0:ec559500a63f	1925	* higher layers deal with it. Continue processing
andrewbonney	0:ec559500a63f	1926	* the received pbuf chain in case a new packet starts. */
andrewbonney	0:ec559500a63f	1927	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
andrewbonney	0:ec559500a63f	1928	LINK_STATS_INC(link.memerr);
andrewbonney	0:ec559500a63f	1929	pppDrop(pcrx);
andrewbonney	0:ec559500a63f	1930	pcrx->inState = PDSTART; /* Wait for flag sequence. */
andrewbonney	0:ec559500a63f	1931	break;
andrewbonney	0:ec559500a63f	1932	}
andrewbonney	0:ec559500a63f	1933	if (pcrx->inHead == NULL) {
andrewbonney	0:ec559500a63f	1934	struct pppInputHeader pih = (struct pppInputHeader )nextNBuf->payload;
andrewbonney	0:ec559500a63f	1935
andrewbonney	0:ec559500a63f	1936	pih->unit = pcrx->pd;
andrewbonney	0:ec559500a63f	1937	pih->proto = pcrx->inProtocol;
andrewbonney	0:ec559500a63f	1938
andrewbonney	0:ec559500a63f	1939	nextNBuf->len += sizeof(*pih);
andrewbonney	0:ec559500a63f	1940
andrewbonney	0:ec559500a63f	1941	pcrx->inHead = nextNBuf;
andrewbonney	0:ec559500a63f	1942	}
andrewbonney	0:ec559500a63f	1943	pcrx->inTail = nextNBuf;
andrewbonney	0:ec559500a63f	1944	}
andrewbonney	0:ec559500a63f	1945	/* Load character into buffer. */
andrewbonney	0:ec559500a63f	1946	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
andrewbonney	0:ec559500a63f	1947	break;
andrewbonney	0:ec559500a63f	1948	}
andrewbonney	0:ec559500a63f	1949
andrewbonney	0:ec559500a63f	1950	/* update the frame check sequence number. */
andrewbonney	0:ec559500a63f	1951	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
andrewbonney	0:ec559500a63f	1952	}
andrewbonney	0:ec559500a63f	1953	} /* while (l-- > 0), all bytes processed */
andrewbonney	0:ec559500a63f	1954
andrewbonney	0:ec559500a63f	1955	avRandomize();
andrewbonney	0:ec559500a63f	1956	}
andrewbonney	0:ec559500a63f	1957	#endif /* PPPOS_SUPPORT */
andrewbonney	0:ec559500a63f	1958
andrewbonney	0:ec559500a63f	1959	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	1960	void
andrewbonney	0:ec559500a63f	1961	pppInProcOverEthernet(int pd, struct pbuf *pb)
andrewbonney	0:ec559500a63f	1962	{
andrewbonney	0:ec559500a63f	1963	struct pppInputHeader *pih;
andrewbonney	0:ec559500a63f	1964	u16_t inProtocol;
andrewbonney	0:ec559500a63f	1965
andrewbonney	0:ec559500a63f	1966	if(pb->len < sizeof(inProtocol)) {
andrewbonney	0:ec559500a63f	1967	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
andrewbonney	0:ec559500a63f	1968	goto drop;
andrewbonney	0:ec559500a63f	1969	}
andrewbonney	0:ec559500a63f	1970
andrewbonney	0:ec559500a63f	1971	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
andrewbonney	0:ec559500a63f	1972
andrewbonney	0:ec559500a63f	1973	/* make room for pppInputHeader - should not fail */
andrewbonney	0:ec559500a63f	1974	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
andrewbonney	0:ec559500a63f	1975	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
andrewbonney	0:ec559500a63f	1976	goto drop;
andrewbonney	0:ec559500a63f	1977	}
andrewbonney	0:ec559500a63f	1978
andrewbonney	0:ec559500a63f	1979	pih = pb->payload;
andrewbonney	0:ec559500a63f	1980
andrewbonney	0:ec559500a63f	1981	pih->unit = pd;
andrewbonney	0:ec559500a63f	1982	pih->proto = inProtocol;
andrewbonney	0:ec559500a63f	1983
andrewbonney	0:ec559500a63f	1984	/* Dispatch the packet thereby consuming it. */
andrewbonney	0:ec559500a63f	1985	pppInput(pb);
andrewbonney	0:ec559500a63f	1986	return;
andrewbonney	0:ec559500a63f	1987
andrewbonney	0:ec559500a63f	1988	drop:
andrewbonney	0:ec559500a63f	1989	LINK_STATS_INC(link.drop);
andrewbonney	0:ec559500a63f	1990	snmp_inc_ifindiscards(&pppControl[pd].netif);
andrewbonney	0:ec559500a63f	1991	pbuf_free(pb);
andrewbonney	0:ec559500a63f	1992	return;
andrewbonney	0:ec559500a63f	1993	}
andrewbonney	0:ec559500a63f	1994	#endif /* PPPOE_SUPPORT */
andrewbonney	0:ec559500a63f	1995
andrewbonney	0:ec559500a63f	1996	#if LWIP_NETIF_STATUS_CALLBACK
andrewbonney	0:ec559500a63f	1997	/** Set the status callback of a PPP's netif
andrewbonney	0:ec559500a63f	1998	*
andrewbonney	0:ec559500a63f	1999	* @param pd The PPP descriptor returned by pppOpen()
andrewbonney	0:ec559500a63f	2000	* @param status_callback pointer to the status callback function
andrewbonney	0:ec559500a63f	2001	*
andrewbonney	0:ec559500a63f	2002	* @see netif_set_status_callback
andrewbonney	0:ec559500a63f	2003	*/
andrewbonney	0:ec559500a63f	2004	void
andrewbonney	0:ec559500a63f	2005	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
andrewbonney	0:ec559500a63f	2006	{
andrewbonney	0:ec559500a63f	2007	netif_set_status_callback(&pppControl[pd].netif, status_callback);
andrewbonney	0:ec559500a63f	2008	}
andrewbonney	0:ec559500a63f	2009	#endif /* LWIP_NETIF_STATUS_CALLBACK */
andrewbonney	0:ec559500a63f	2010
andrewbonney	0:ec559500a63f	2011	#if LWIP_NETIF_LINK_CALLBACK
andrewbonney	0:ec559500a63f	2012	/** Set the link callback of a PPP's netif
andrewbonney	0:ec559500a63f	2013	*
andrewbonney	0:ec559500a63f	2014	* @param pd The PPP descriptor returned by pppOpen()
andrewbonney	0:ec559500a63f	2015	* @param link_callback pointer to the link callback function
andrewbonney	0:ec559500a63f	2016	*
andrewbonney	0:ec559500a63f	2017	* @see netif_set_link_callback
andrewbonney	0:ec559500a63f	2018	*/
andrewbonney	0:ec559500a63f	2019	void
andrewbonney	0:ec559500a63f	2020	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
andrewbonney	0:ec559500a63f	2021	{
andrewbonney	0:ec559500a63f	2022	netif_set_link_callback(&pppControl[pd].netif, link_callback);
andrewbonney	0:ec559500a63f	2023	}
andrewbonney	0:ec559500a63f	2024	#endif /* LWIP_NETIF_LINK_CALLBACK */
andrewbonney	0:ec559500a63f	2025
andrewbonney	0:ec559500a63f	2026	#endif /* PPP_SUPPORT */

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Type:	Library
Created:	08 Apr 2011
Imports:	86
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	3

lwip/netif/ppp/ppp.c@0:ec559500a63f, 2011-04-08 (annotated)

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