DS130x_I2CApp - This short program illustrates how to use the DS1…

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Yann Garcia / Mbed 2 deprecated DS130x_I2CApp

This short program illustrates how to use the DS130x_I2C library. My objective is to share the same RTC with Microchip 18F MCU.

Dependencies: mbed DebugLibrary

NetServices/lwip/netif/ppp/ppp.c@0:f30e2135b0db, 2011-02-09 (annotated)

Committer:: Yann
Date:: Wed Feb 09 13:57:49 2011 +0000
Revision:: 0:f30e2135b0db

V0.0.0.1

Who changed what in which revision?

User	Revision	Line number	New contents of line
Yann	0:f30e2135b0db	1	/*****************************************************************************
Yann	0:f30e2135b0db	2	* ppp.c - Network Point to Point Protocol program file.
Yann	0:f30e2135b0db	3	*
Yann	0:f30e2135b0db	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
Yann	0:f30e2135b0db	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
Yann	0:f30e2135b0db	6	*
Yann	0:f30e2135b0db	7	* The authors hereby grant permission to use, copy, modify, distribute,
Yann	0:f30e2135b0db	8	* and license this software and its documentation for any purpose, provided
Yann	0:f30e2135b0db	9	* that existing copyright notices are retained in all copies and that this
Yann	0:f30e2135b0db	10	* notice and the following disclaimer are included verbatim in any
Yann	0:f30e2135b0db	11	* distributions. No written agreement, license, or royalty fee is required
Yann	0:f30e2135b0db	12	* for any of the authorized uses.
Yann	0:f30e2135b0db	13	*
Yann	0:f30e2135b0db	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
Yann	0:f30e2135b0db	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
Yann	0:f30e2135b0db	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
Yann	0:f30e2135b0db	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
Yann	0:f30e2135b0db	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
Yann	0:f30e2135b0db	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
Yann	0:f30e2135b0db	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
Yann	0:f30e2135b0db	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Yann	0:f30e2135b0db	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
Yann	0:f30e2135b0db	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Yann	0:f30e2135b0db	24	*
Yann	0:f30e2135b0db	25	******************************************************************************
Yann	0:f30e2135b0db	26	* REVISION HISTORY
Yann	0:f30e2135b0db	27	*
Yann	0:f30e2135b0db	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
Yann	0:f30e2135b0db	29	* Ported to lwIP.
Yann	0:f30e2135b0db	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
Yann	0:f30e2135b0db	31	* Original.
Yann	0:f30e2135b0db	32	*****************************************************************************/
Yann	0:f30e2135b0db	33
Yann	0:f30e2135b0db	34	/*
Yann	0:f30e2135b0db	35	* ppp_defs.h - PPP definitions.
Yann	0:f30e2135b0db	36	*
Yann	0:f30e2135b0db	37	* if_pppvar.h - private structures and declarations for PPP.
Yann	0:f30e2135b0db	38	*
Yann	0:f30e2135b0db	39	* Copyright (c) 1994 The Australian National University.
Yann	0:f30e2135b0db	40	* All rights reserved.
Yann	0:f30e2135b0db	41	*
Yann	0:f30e2135b0db	42	* Permission to use, copy, modify, and distribute this software and its
Yann	0:f30e2135b0db	43	* documentation is hereby granted, provided that the above copyright
Yann	0:f30e2135b0db	44	* notice appears in all copies. This software is provided without any
Yann	0:f30e2135b0db	45	* warranty, express or implied. The Australian National University
Yann	0:f30e2135b0db	46	* makes no representations about the suitability of this software for
Yann	0:f30e2135b0db	47	* any purpose.
Yann	0:f30e2135b0db	48	*
Yann	0:f30e2135b0db	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
Yann	0:f30e2135b0db	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
Yann	0:f30e2135b0db	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
Yann	0:f30e2135b0db	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
Yann	0:f30e2135b0db	53	* OF SUCH DAMAGE.
Yann	0:f30e2135b0db	54	*
Yann	0:f30e2135b0db	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
Yann	0:f30e2135b0db	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
Yann	0:f30e2135b0db	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
Yann	0:f30e2135b0db	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
Yann	0:f30e2135b0db	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
Yann	0:f30e2135b0db	60	* OR MODIFICATIONS.
Yann	0:f30e2135b0db	61	*/
Yann	0:f30e2135b0db	62
Yann	0:f30e2135b0db	63	/*
Yann	0:f30e2135b0db	64	* if_ppp.h - Point-to-Point Protocol definitions.
Yann	0:f30e2135b0db	65	*
Yann	0:f30e2135b0db	66	* Copyright (c) 1989 Carnegie Mellon University.
Yann	0:f30e2135b0db	67	* All rights reserved.
Yann	0:f30e2135b0db	68	*
Yann	0:f30e2135b0db	69	* Redistribution and use in source and binary forms are permitted
Yann	0:f30e2135b0db	70	* provided that the above copyright notice and this paragraph are
Yann	0:f30e2135b0db	71	* duplicated in all such forms and that any documentation,
Yann	0:f30e2135b0db	72	* advertising materials, and other materials related to such
Yann	0:f30e2135b0db	73	* distribution and use acknowledge that the software was developed
Yann	0:f30e2135b0db	74	* by Carnegie Mellon University. The name of the
Yann	0:f30e2135b0db	75	* University may not be used to endorse or promote products derived
Yann	0:f30e2135b0db	76	* from this software without specific prior written permission.
Yann	0:f30e2135b0db	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
Yann	0:f30e2135b0db	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
Yann	0:f30e2135b0db	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Yann	0:f30e2135b0db	80	*/
Yann	0:f30e2135b0db	81
Yann	0:f30e2135b0db	82	#include "lwip/opt.h"
Yann	0:f30e2135b0db	83
Yann	0:f30e2135b0db	84	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
Yann	0:f30e2135b0db	85
Yann	0:f30e2135b0db	86	#include "lwip/ip.h" /* for ip_input() */
Yann	0:f30e2135b0db	87
Yann	0:f30e2135b0db	88	#include "ppp.h"
Yann	0:f30e2135b0db	89	#include "pppdebug.h"
Yann	0:f30e2135b0db	90
Yann	0:f30e2135b0db	91	#include "randm.h"
Yann	0:f30e2135b0db	92	#include "fsm.h"
Yann	0:f30e2135b0db	93	#if PAP_SUPPORT
Yann	0:f30e2135b0db	94	#include "pap.h"
Yann	0:f30e2135b0db	95	#endif /* PAP_SUPPORT */
Yann	0:f30e2135b0db	96	#if CHAP_SUPPORT
Yann	0:f30e2135b0db	97	#include "chap.h"
Yann	0:f30e2135b0db	98	#endif /* CHAP_SUPPORT */
Yann	0:f30e2135b0db	99	#include "ipcp.h"
Yann	0:f30e2135b0db	100	#include "lcp.h"
Yann	0:f30e2135b0db	101	#include "magic.h"
Yann	0:f30e2135b0db	102	#include "auth.h"
Yann	0:f30e2135b0db	103	#if VJ_SUPPORT
Yann	0:f30e2135b0db	104	#include "vj.h"
Yann	0:f30e2135b0db	105	#endif /* VJ_SUPPORT */
Yann	0:f30e2135b0db	106	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	107	#include "netif/ppp_oe.h"
Yann	0:f30e2135b0db	108	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	109
Yann	0:f30e2135b0db	110	#include "lwip/tcpip.h"
Yann	0:f30e2135b0db	111	#include "lwip/api.h"
Yann	0:f30e2135b0db	112	#include "lwip/snmp.h"
Yann	0:f30e2135b0db	113
Yann	0:f30e2135b0db	114	#include <string.h>
Yann	0:f30e2135b0db	115
Yann	0:f30e2135b0db	116	/*************************/
Yann	0:f30e2135b0db	117	/* LOCAL DEFINITIONS */
Yann	0:f30e2135b0db	118	/*************************/
Yann	0:f30e2135b0db	119
Yann	0:f30e2135b0db	120	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
Yann	0:f30e2135b0db	121	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
Yann	0:f30e2135b0db	122	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
Yann	0:f30e2135b0db	123	*/
Yann	0:f30e2135b0db	124	#ifndef PPP_INPROC_MULTITHREADED
Yann	0:f30e2135b0db	125	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
Yann	0:f30e2135b0db	126	#endif
Yann	0:f30e2135b0db	127
Yann	0:f30e2135b0db	128	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
Yann	0:f30e2135b0db	129	* Default is 0: call pppos_input() for received raw characters, charcater
Yann	0:f30e2135b0db	130	* reception is up to the port */
Yann	0:f30e2135b0db	131	#ifndef PPP_INPROC_OWNTHREAD
Yann	0:f30e2135b0db	132	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
Yann	0:f30e2135b0db	133	#endif
Yann	0:f30e2135b0db	134
Yann	0:f30e2135b0db	135	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
Yann	0:f30e2135b0db	136	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
Yann	0:f30e2135b0db	137	#endif
Yann	0:f30e2135b0db	138
Yann	0:f30e2135b0db	139	/*
Yann	0:f30e2135b0db	140	* The basic PPP frame.
Yann	0:f30e2135b0db	141	*/
Yann	0:f30e2135b0db	142	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
Yann	0:f30e2135b0db	143	#define PPP_CONTROL(p) (((u_char *)(p))[1])
Yann	0:f30e2135b0db	144	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
Yann	0:f30e2135b0db	145
Yann	0:f30e2135b0db	146	/* PPP packet parser states. Current state indicates operation yet to be
Yann	0:f30e2135b0db	147	* completed. */
Yann	0:f30e2135b0db	148	typedef enum {
Yann	0:f30e2135b0db	149	PDIDLE = 0, /* Idle state - waiting. */
Yann	0:f30e2135b0db	150	PDSTART, /* Process start flag. */
Yann	0:f30e2135b0db	151	PDADDRESS, /* Process address field. */
Yann	0:f30e2135b0db	152	PDCONTROL, /* Process control field. */
Yann	0:f30e2135b0db	153	PDPROTOCOL1, /* Process protocol field 1. */
Yann	0:f30e2135b0db	154	PDPROTOCOL2, /* Process protocol field 2. */
Yann	0:f30e2135b0db	155	PDDATA /* Process data byte. */
Yann	0:f30e2135b0db	156	} PPPDevStates;
Yann	0:f30e2135b0db	157
Yann	0:f30e2135b0db	158	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
Yann	0:f30e2135b0db	159
Yann	0:f30e2135b0db	160	/************************/
Yann	0:f30e2135b0db	161	/* LOCAL DATA TYPES */
Yann	0:f30e2135b0db	162	/************************/
Yann	0:f30e2135b0db	163
Yann	0:f30e2135b0db	164	/** RX buffer size: this may be configured smaller! */
Yann	0:f30e2135b0db	165	#ifndef PPPOS_RX_BUFSIZE
Yann	0:f30e2135b0db	166	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
Yann	0:f30e2135b0db	167	#endif
Yann	0:f30e2135b0db	168
Yann	0:f30e2135b0db	169	typedef struct PPPControlRx_s {
Yann	0:f30e2135b0db	170	/** unit number / ppp descriptor */
Yann	0:f30e2135b0db	171	int pd;
Yann	0:f30e2135b0db	172	/** the rx file descriptor */
Yann	0:f30e2135b0db	173	sio_fd_t fd;
Yann	0:f30e2135b0db	174	/** receive buffer - encoded data is stored here */
Yann	0:f30e2135b0db	175	u_char rxbuf[PPPOS_RX_BUFSIZE];
Yann	0:f30e2135b0db	176
Yann	0:f30e2135b0db	177	/* The input packet. */
Yann	0:f30e2135b0db	178	struct pbuf inHead, inTail;
Yann	0:f30e2135b0db	179
Yann	0:f30e2135b0db	180	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	181	u16_t inProtocol; /* The input protocol code. */
Yann	0:f30e2135b0db	182	u16_t inFCS; /* Input Frame Check Sequence value. */
Yann	0:f30e2135b0db	183	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	184	PPPDevStates inState; /* The input process state. */
Yann	0:f30e2135b0db	185	char inEscaped; /* Escape next character. */
Yann	0:f30e2135b0db	186	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
Yann	0:f30e2135b0db	187	} PPPControlRx;
Yann	0:f30e2135b0db	188
Yann	0:f30e2135b0db	189	/*
Yann	0:f30e2135b0db	190	* PPP interface control block.
Yann	0:f30e2135b0db	191	*/
Yann	0:f30e2135b0db	192	typedef struct PPPControl_s {
Yann	0:f30e2135b0db	193	PPPControlRx rx;
Yann	0:f30e2135b0db	194	char openFlag; /* True when in use. */
Yann	0:f30e2135b0db	195	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	196	struct netif *ethif;
Yann	0:f30e2135b0db	197	struct pppoe_softc *pppoe_sc;
Yann	0:f30e2135b0db	198	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	199	int if_up; /* True when the interface is up. */
Yann	0:f30e2135b0db	200	int errCode; /* Code indicating why interface is down. */
Yann	0:f30e2135b0db	201	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	202	sio_fd_t fd; /* File device ID of port. */
Yann	0:f30e2135b0db	203	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	204	u16_t mtu; /* Peer's mru */
Yann	0:f30e2135b0db	205	int pcomp; /* Does peer accept protocol compression? */
Yann	0:f30e2135b0db	206	int accomp; /* Does peer accept addr/ctl compression? */
Yann	0:f30e2135b0db	207	u_long lastXMit; /* Time of last transmission. */
Yann	0:f30e2135b0db	208	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
Yann	0:f30e2135b0db	209	#if PPPOS_SUPPORT && VJ_SUPPORT
Yann	0:f30e2135b0db	210	int vjEnabled; /* Flag indicating VJ compression enabled. */
Yann	0:f30e2135b0db	211	struct vjcompress vjComp; /* Van Jacobson compression header. */
Yann	0:f30e2135b0db	212	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
Yann	0:f30e2135b0db	213
Yann	0:f30e2135b0db	214	struct netif netif;
Yann	0:f30e2135b0db	215
Yann	0:f30e2135b0db	216	struct ppp_addrs addrs;
Yann	0:f30e2135b0db	217
Yann	0:f30e2135b0db	218	void (linkStatusCB)(void ctx, int errCode, void *arg);
Yann	0:f30e2135b0db	219	void *linkStatusCtx;
Yann	0:f30e2135b0db	220
Yann	0:f30e2135b0db	221	} PPPControl;
Yann	0:f30e2135b0db	222
Yann	0:f30e2135b0db	223
Yann	0:f30e2135b0db	224	/*
Yann	0:f30e2135b0db	225	* Ioctl definitions.
Yann	0:f30e2135b0db	226	*/
Yann	0:f30e2135b0db	227
Yann	0:f30e2135b0db	228	struct npioctl {
Yann	0:f30e2135b0db	229	int protocol; /* PPP procotol, e.g. PPP_IP */
Yann	0:f30e2135b0db	230	enum NPmode mode;
Yann	0:f30e2135b0db	231	};
Yann	0:f30e2135b0db	232
Yann	0:f30e2135b0db	233
Yann	0:f30e2135b0db	234
Yann	0:f30e2135b0db	235	/***********************************/
Yann	0:f30e2135b0db	236	/* LOCAL FUNCTION DECLARATIONS */
Yann	0:f30e2135b0db	237	/***********************************/
Yann	0:f30e2135b0db	238	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	239	#if PPP_INPROC_OWNTHREAD
Yann	0:f30e2135b0db	240	static void pppInputThread(void *arg);
Yann	0:f30e2135b0db	241	#endif /* PPP_INPROC_OWNTHREAD */
Yann	0:f30e2135b0db	242	static void pppDrop(PPPControlRx *pcrx);
Yann	0:f30e2135b0db	243	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
Yann	0:f30e2135b0db	244	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	245
Yann	0:f30e2135b0db	246
Yann	0:f30e2135b0db	247	/******************************/
Yann	0:f30e2135b0db	248	/* PUBLIC DATA STRUCTURES */
Yann	0:f30e2135b0db	249	/******************************/
Yann	0:f30e2135b0db	250	u_long subnetMask;
Yann	0:f30e2135b0db	251
Yann	0:f30e2135b0db	252	static PPPControl pppControl[NUM_PPP] MEM_POSITION; /* The PPP interface control blocks. */
Yann	0:f30e2135b0db	253
Yann	0:f30e2135b0db	254	/*
Yann	0:f30e2135b0db	255	* PPP Data Link Layer "protocol" table.
Yann	0:f30e2135b0db	256	* One entry per supported protocol.
Yann	0:f30e2135b0db	257	* The last entry must be NULL.
Yann	0:f30e2135b0db	258	*/
Yann	0:f30e2135b0db	259	struct protent *ppp_protocols[] = {
Yann	0:f30e2135b0db	260	&lcp_protent,
Yann	0:f30e2135b0db	261	#if PAP_SUPPORT
Yann	0:f30e2135b0db	262	&pap_protent,
Yann	0:f30e2135b0db	263	#endif /* PAP_SUPPORT */
Yann	0:f30e2135b0db	264	#if CHAP_SUPPORT
Yann	0:f30e2135b0db	265	&chap_protent,
Yann	0:f30e2135b0db	266	#endif /* CHAP_SUPPORT */
Yann	0:f30e2135b0db	267	#if CBCP_SUPPORT
Yann	0:f30e2135b0db	268	&cbcp_protent,
Yann	0:f30e2135b0db	269	#endif /* CBCP_SUPPORT */
Yann	0:f30e2135b0db	270	&ipcp_protent,
Yann	0:f30e2135b0db	271	#if CCP_SUPPORT
Yann	0:f30e2135b0db	272	&ccp_protent,
Yann	0:f30e2135b0db	273	#endif /* CCP_SUPPORT */
Yann	0:f30e2135b0db	274	NULL
Yann	0:f30e2135b0db	275	};
Yann	0:f30e2135b0db	276
Yann	0:f30e2135b0db	277
Yann	0:f30e2135b0db	278	/*
Yann	0:f30e2135b0db	279	* Buffers for outgoing packets. This must be accessed only from the appropriate
Yann	0:f30e2135b0db	280	* PPP task so that it doesn't need to be protected to avoid collisions.
Yann	0:f30e2135b0db	281	*/
Yann	0:f30e2135b0db	282	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] MEM_POSITION;
Yann	0:f30e2135b0db	283
Yann	0:f30e2135b0db	284
Yann	0:f30e2135b0db	285	/*****************************/
Yann	0:f30e2135b0db	286	/* LOCAL DATA STRUCTURES */
Yann	0:f30e2135b0db	287	/*****************************/
Yann	0:f30e2135b0db	288
Yann	0:f30e2135b0db	289	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	290	/*
Yann	0:f30e2135b0db	291	* FCS lookup table as calculated by genfcstab.
Yann	0:f30e2135b0db	292	* @todo: smaller, slower implementation for lower memory footprint?
Yann	0:f30e2135b0db	293	*/
Yann	0:f30e2135b0db	294	static const u_short fcstab[256] = {
Yann	0:f30e2135b0db	295	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
Yann	0:f30e2135b0db	296	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
Yann	0:f30e2135b0db	297	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
Yann	0:f30e2135b0db	298	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
Yann	0:f30e2135b0db	299	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
Yann	0:f30e2135b0db	300	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
Yann	0:f30e2135b0db	301	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
Yann	0:f30e2135b0db	302	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
Yann	0:f30e2135b0db	303	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
Yann	0:f30e2135b0db	304	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
Yann	0:f30e2135b0db	305	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
Yann	0:f30e2135b0db	306	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
Yann	0:f30e2135b0db	307	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
Yann	0:f30e2135b0db	308	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
Yann	0:f30e2135b0db	309	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
Yann	0:f30e2135b0db	310	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
Yann	0:f30e2135b0db	311	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
Yann	0:f30e2135b0db	312	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
Yann	0:f30e2135b0db	313	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
Yann	0:f30e2135b0db	314	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
Yann	0:f30e2135b0db	315	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
Yann	0:f30e2135b0db	316	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
Yann	0:f30e2135b0db	317	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
Yann	0:f30e2135b0db	318	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
Yann	0:f30e2135b0db	319	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
Yann	0:f30e2135b0db	320	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
Yann	0:f30e2135b0db	321	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
Yann	0:f30e2135b0db	322	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
Yann	0:f30e2135b0db	323	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
Yann	0:f30e2135b0db	324	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
Yann	0:f30e2135b0db	325	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
Yann	0:f30e2135b0db	326	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
Yann	0:f30e2135b0db	327	};
Yann	0:f30e2135b0db	328
Yann	0:f30e2135b0db	329	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
Yann	0:f30e2135b0db	330	* to select the specific bit for a character. */
Yann	0:f30e2135b0db	331	static u_char pppACCMMask[] = {
Yann	0:f30e2135b0db	332	0x01,
Yann	0:f30e2135b0db	333	0x02,
Yann	0:f30e2135b0db	334	0x04,
Yann	0:f30e2135b0db	335	0x08,
Yann	0:f30e2135b0db	336	0x10,
Yann	0:f30e2135b0db	337	0x20,
Yann	0:f30e2135b0db	338	0x40,
Yann	0:f30e2135b0db	339	0x80
Yann	0:f30e2135b0db	340	};
Yann	0:f30e2135b0db	341
Yann	0:f30e2135b0db	342	/** Wake up the task blocked in reading from serial line (if any) */
Yann	0:f30e2135b0db	343	static void
Yann	0:f30e2135b0db	344	pppRecvWakeup(int pd)
Yann	0:f30e2135b0db	345	{
Yann	0:f30e2135b0db	346	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
Yann	0:f30e2135b0db	347	sio_read_abort(pppControl[pd].fd);
Yann	0:f30e2135b0db	348	}
Yann	0:f30e2135b0db	349	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	350
Yann	0:f30e2135b0db	351	void
Yann	0:f30e2135b0db	352	pppLinkTerminated(int pd)
Yann	0:f30e2135b0db	353	{
Yann	0:f30e2135b0db	354	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
Yann	0:f30e2135b0db	355
Yann	0:f30e2135b0db	356	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	357	if (pppControl[pd].ethif) {
Yann	0:f30e2135b0db	358	pppoe_disconnect(pppControl[pd].pppoe_sc);
Yann	0:f30e2135b0db	359	} else
Yann	0:f30e2135b0db	360	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	361	{
Yann	0:f30e2135b0db	362	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	363	PPPControl* pc;
Yann	0:f30e2135b0db	364	pppRecvWakeup(pd);
Yann	0:f30e2135b0db	365	pc = &pppControl[pd];
Yann	0:f30e2135b0db	366	pppDrop(&pc->rx); /* bug fix #17726 */
Yann	0:f30e2135b0db	367
Yann	0:f30e2135b0db	368	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
Yann	0:f30e2135b0db	369	if (pc->linkStatusCB) {
Yann	0:f30e2135b0db	370	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
Yann	0:f30e2135b0db	371	}
Yann	0:f30e2135b0db	372
Yann	0:f30e2135b0db	373	pc->openFlag = 0;/**/
Yann	0:f30e2135b0db	374	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	375	}
Yann	0:f30e2135b0db	376	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
Yann	0:f30e2135b0db	377	}
Yann	0:f30e2135b0db	378
Yann	0:f30e2135b0db	379	void
Yann	0:f30e2135b0db	380	pppLinkDown(int pd)
Yann	0:f30e2135b0db	381	{
Yann	0:f30e2135b0db	382	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
Yann	0:f30e2135b0db	383
Yann	0:f30e2135b0db	384	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	385	if (pppControl[pd].ethif) {
Yann	0:f30e2135b0db	386	pppoe_disconnect(pppControl[pd].pppoe_sc);
Yann	0:f30e2135b0db	387	} else
Yann	0:f30e2135b0db	388	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	389	{
Yann	0:f30e2135b0db	390	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	391	pppRecvWakeup(pd);
Yann	0:f30e2135b0db	392	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	393	}
Yann	0:f30e2135b0db	394	}
Yann	0:f30e2135b0db	395
Yann	0:f30e2135b0db	396	/** Initiate LCP open request */
Yann	0:f30e2135b0db	397	static void
Yann	0:f30e2135b0db	398	pppStart(int pd)
Yann	0:f30e2135b0db	399	{
Yann	0:f30e2135b0db	400	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
Yann	0:f30e2135b0db	401	lcp_lowerup(pd);
Yann	0:f30e2135b0db	402	lcp_open(pd); /* Start protocol */
Yann	0:f30e2135b0db	403	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
Yann	0:f30e2135b0db	404	}
Yann	0:f30e2135b0db	405
Yann	0:f30e2135b0db	406	/** LCP close request */
Yann	0:f30e2135b0db	407	static void
Yann	0:f30e2135b0db	408	pppStop(int pd)
Yann	0:f30e2135b0db	409	{
Yann	0:f30e2135b0db	410	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
Yann	0:f30e2135b0db	411	lcp_close(pd, "User request");
Yann	0:f30e2135b0db	412	}
Yann	0:f30e2135b0db	413
Yann	0:f30e2135b0db	414	/** Called when carrier/link is lost */
Yann	0:f30e2135b0db	415	static void
Yann	0:f30e2135b0db	416	pppHup(int pd)
Yann	0:f30e2135b0db	417	{
Yann	0:f30e2135b0db	418	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
Yann	0:f30e2135b0db	419	lcp_lowerdown(pd);
Yann	0:f30e2135b0db	420	link_terminated(pd);
Yann	0:f30e2135b0db	421	}
Yann	0:f30e2135b0db	422
Yann	0:f30e2135b0db	423	/***********************************/
Yann	0:f30e2135b0db	424	/* PUBLIC FUNCTION DEFINITIONS */
Yann	0:f30e2135b0db	425	/***********************************/
Yann	0:f30e2135b0db	426	/* Initialize the PPP subsystem. */
Yann	0:f30e2135b0db	427
Yann	0:f30e2135b0db	428	struct ppp_settings ppp_settings;
Yann	0:f30e2135b0db	429
Yann	0:f30e2135b0db	430	void
Yann	0:f30e2135b0db	431	pppInit(void)
Yann	0:f30e2135b0db	432	{
Yann	0:f30e2135b0db	433	struct protent *protp;
Yann	0:f30e2135b0db	434	int i, j;
Yann	0:f30e2135b0db	435
Yann	0:f30e2135b0db	436	memset(&ppp_settings, 0, sizeof(ppp_settings));
Yann	0:f30e2135b0db	437	ppp_settings.usepeerdns = 1;
Yann	0:f30e2135b0db	438	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
Yann	0:f30e2135b0db	439
Yann	0:f30e2135b0db	440	magicInit();
Yann	0:f30e2135b0db	441
Yann	0:f30e2135b0db	442	subnetMask = PP_HTONL(0xffffff00);
Yann	0:f30e2135b0db	443
Yann	0:f30e2135b0db	444	for (i = 0; i < NUM_PPP; i++) {
Yann	0:f30e2135b0db	445	/* Initialize each protocol to the standard option set. */
Yann	0:f30e2135b0db	446	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
Yann	0:f30e2135b0db	447	(*protp->init)(i);
Yann	0:f30e2135b0db	448	}
Yann	0:f30e2135b0db	449	}
Yann	0:f30e2135b0db	450	}
Yann	0:f30e2135b0db	451
Yann	0:f30e2135b0db	452	void
Yann	0:f30e2135b0db	453	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
Yann	0:f30e2135b0db	454	{
Yann	0:f30e2135b0db	455	switch(authType) {
Yann	0:f30e2135b0db	456	case PPPAUTHTYPE_NONE:
Yann	0:f30e2135b0db	457	default:
Yann	0:f30e2135b0db	458	#ifdef LWIP_PPP_STRICT_PAP_REJECT
Yann	0:f30e2135b0db	459	ppp_settings.refuse_pap = 1;
Yann	0:f30e2135b0db	460	#else /* LWIP_PPP_STRICT_PAP_REJECT */
Yann	0:f30e2135b0db	461	/* some providers request pap and accept an empty login/pw */
Yann	0:f30e2135b0db	462	ppp_settings.refuse_pap = 0;
Yann	0:f30e2135b0db	463	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
Yann	0:f30e2135b0db	464	ppp_settings.refuse_chap = 1;
Yann	0:f30e2135b0db	465	break;
Yann	0:f30e2135b0db	466
Yann	0:f30e2135b0db	467	case PPPAUTHTYPE_ANY:
Yann	0:f30e2135b0db	468	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
Yann	0:f30e2135b0db	469	* RFC 1994 says:
Yann	0:f30e2135b0db	470	*
Yann	0:f30e2135b0db	471	* In practice, within or associated with each PPP server, there is a
Yann	0:f30e2135b0db	472	* database which associates "user" names with authentication
Yann	0:f30e2135b0db	473	* information ("secrets"). It is not anticipated that a particular
Yann	0:f30e2135b0db	474	* named user would be authenticated by multiple methods. This would
Yann	0:f30e2135b0db	475	* make the user vulnerable to attacks which negotiate the least secure
Yann	0:f30e2135b0db	476	* method from among a set (such as PAP rather than CHAP). If the same
Yann	0:f30e2135b0db	477	* secret was used, PAP would reveal the secret to be used later with
Yann	0:f30e2135b0db	478	* CHAP.
Yann	0:f30e2135b0db	479	*
Yann	0:f30e2135b0db	480	* Instead, for each user name there should be an indication of exactly
Yann	0:f30e2135b0db	481	* one method used to authenticate that user name. If a user needs to
Yann	0:f30e2135b0db	482	* make use of different authentication methods under different
Yann	0:f30e2135b0db	483	* circumstances, then distinct user names SHOULD be employed, each of
Yann	0:f30e2135b0db	484	* which identifies exactly one authentication method.
Yann	0:f30e2135b0db	485	*
Yann	0:f30e2135b0db	486	*/
Yann	0:f30e2135b0db	487	ppp_settings.refuse_pap = 0;
Yann	0:f30e2135b0db	488	ppp_settings.refuse_chap = 0;
Yann	0:f30e2135b0db	489	break;
Yann	0:f30e2135b0db	490
Yann	0:f30e2135b0db	491	case PPPAUTHTYPE_PAP:
Yann	0:f30e2135b0db	492	ppp_settings.refuse_pap = 0;
Yann	0:f30e2135b0db	493	ppp_settings.refuse_chap = 1;
Yann	0:f30e2135b0db	494	break;
Yann	0:f30e2135b0db	495
Yann	0:f30e2135b0db	496	case PPPAUTHTYPE_CHAP:
Yann	0:f30e2135b0db	497	ppp_settings.refuse_pap = 1;
Yann	0:f30e2135b0db	498	ppp_settings.refuse_chap = 0;
Yann	0:f30e2135b0db	499	break;
Yann	0:f30e2135b0db	500	}
Yann	0:f30e2135b0db	501
Yann	0:f30e2135b0db	502	if(user) {
Yann	0:f30e2135b0db	503	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
Yann	0:f30e2135b0db	504	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
Yann	0:f30e2135b0db	505	} else {
Yann	0:f30e2135b0db	506	ppp_settings.user[0] = '\0';
Yann	0:f30e2135b0db	507	}
Yann	0:f30e2135b0db	508
Yann	0:f30e2135b0db	509	if(passwd) {
Yann	0:f30e2135b0db	510	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
Yann	0:f30e2135b0db	511	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
Yann	0:f30e2135b0db	512	} else {
Yann	0:f30e2135b0db	513	ppp_settings.passwd[0] = '\0';
Yann	0:f30e2135b0db	514	}
Yann	0:f30e2135b0db	515	}
Yann	0:f30e2135b0db	516
Yann	0:f30e2135b0db	517	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	518	/** Open a new PPP connection using the given I/O device.
Yann	0:f30e2135b0db	519	* This initializes the PPP control block but does not
Yann	0:f30e2135b0db	520	* attempt to negotiate the LCP session. If this port
Yann	0:f30e2135b0db	521	* connects to a modem, the modem connection must be
Yann	0:f30e2135b0db	522	* established before calling this.
Yann	0:f30e2135b0db	523	* Return a new PPP connection descriptor on success or
Yann	0:f30e2135b0db	524	* an error code (negative) on failure.
Yann	0:f30e2135b0db	525	*
Yann	0:f30e2135b0db	526	* pppOpen() is directly defined to this function.
Yann	0:f30e2135b0db	527	*/
Yann	0:f30e2135b0db	528	int
Yann	0:f30e2135b0db	529	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
Yann	0:f30e2135b0db	530	{
Yann	0:f30e2135b0db	531	PPPControl *pc;
Yann	0:f30e2135b0db	532	int pd;
Yann	0:f30e2135b0db	533
Yann	0:f30e2135b0db	534	if (linkStatusCB == NULL) {
Yann	0:f30e2135b0db	535	/* PPP is single-threaded: without a callback,
Yann	0:f30e2135b0db	536	* there is no way to know when the link is up. */
Yann	0:f30e2135b0db	537	return PPPERR_PARAM;
Yann	0:f30e2135b0db	538	}
Yann	0:f30e2135b0db	539
Yann	0:f30e2135b0db	540	/* Find a free PPP session descriptor. */
Yann	0:f30e2135b0db	541	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
Yann	0:f30e2135b0db	542
Yann	0:f30e2135b0db	543	if (pd >= NUM_PPP) {
Yann	0:f30e2135b0db	544	pd = PPPERR_OPEN;
Yann	0:f30e2135b0db	545	} else {
Yann	0:f30e2135b0db	546	pc = &pppControl[pd];
Yann	0:f30e2135b0db	547	/* @todo: is this correct or do I overwrite something? */
Yann	0:f30e2135b0db	548	memset(pc, 0, sizeof(PPPControl));
Yann	0:f30e2135b0db	549	pc->rx.pd = pd;
Yann	0:f30e2135b0db	550	pc->rx.fd = fd;
Yann	0:f30e2135b0db	551
Yann	0:f30e2135b0db	552	pc->openFlag = 1;
Yann	0:f30e2135b0db	553	pc->fd = fd;
Yann	0:f30e2135b0db	554
Yann	0:f30e2135b0db	555	#if VJ_SUPPORT
Yann	0:f30e2135b0db	556	vj_compress_init(&pc->vjComp);
Yann	0:f30e2135b0db	557	#endif /* VJ_SUPPORT */
Yann	0:f30e2135b0db	558
Yann	0:f30e2135b0db	559	/*
Yann	0:f30e2135b0db	560	* Default the in and out accm so that escape and flag characters
Yann	0:f30e2135b0db	561	* are always escaped.
Yann	0:f30e2135b0db	562	*/
Yann	0:f30e2135b0db	563	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
Yann	0:f30e2135b0db	564	pc->outACCM[15] = 0x60;
Yann	0:f30e2135b0db	565
Yann	0:f30e2135b0db	566	pc->linkStatusCB = linkStatusCB;
Yann	0:f30e2135b0db	567	pc->linkStatusCtx = linkStatusCtx;
Yann	0:f30e2135b0db	568
Yann	0:f30e2135b0db	569	/*
Yann	0:f30e2135b0db	570	* Start the connection and handle incoming events (packet or timeout).
Yann	0:f30e2135b0db	571	*/
Yann	0:f30e2135b0db	572	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
Yann	0:f30e2135b0db	573	pppStart(pd);
Yann	0:f30e2135b0db	574	#if PPP_INPROC_OWNTHREAD
Yann	0:f30e2135b0db	575	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
Yann	0:f30e2135b0db	576	#endif
Yann	0:f30e2135b0db	577	}
Yann	0:f30e2135b0db	578
Yann	0:f30e2135b0db	579	return pd;
Yann	0:f30e2135b0db	580	}
Yann	0:f30e2135b0db	581	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	582
Yann	0:f30e2135b0db	583	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	584	static void pppOverEthernetLinkStatusCB(int pd, int up);
Yann	0:f30e2135b0db	585
Yann	0:f30e2135b0db	586	void
Yann	0:f30e2135b0db	587	pppOverEthernetClose(int pd)
Yann	0:f30e2135b0db	588	{
Yann	0:f30e2135b0db	589	PPPControl* pc = &pppControl[pd];
Yann	0:f30e2135b0db	590
Yann	0:f30e2135b0db	591	/* TJL There's no lcp_deinit */
Yann	0:f30e2135b0db	592	lcp_close(pd, NULL);
Yann	0:f30e2135b0db	593
Yann	0:f30e2135b0db	594	pppoe_destroy(&pc->netif);
Yann	0:f30e2135b0db	595	}
Yann	0:f30e2135b0db	596
Yann	0:f30e2135b0db	597	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
Yann	0:f30e2135b0db	598	{
Yann	0:f30e2135b0db	599	PPPControl *pc;
Yann	0:f30e2135b0db	600	int pd;
Yann	0:f30e2135b0db	601
Yann	0:f30e2135b0db	602	LWIP_UNUSED_ARG(service_name);
Yann	0:f30e2135b0db	603	LWIP_UNUSED_ARG(concentrator_name);
Yann	0:f30e2135b0db	604
Yann	0:f30e2135b0db	605	if (linkStatusCB == NULL) {
Yann	0:f30e2135b0db	606	/* PPP is single-threaded: without a callback,
Yann	0:f30e2135b0db	607	* there is no way to know when the link is up. */
Yann	0:f30e2135b0db	608	return PPPERR_PARAM;
Yann	0:f30e2135b0db	609	}
Yann	0:f30e2135b0db	610
Yann	0:f30e2135b0db	611	/* Find a free PPP session descriptor. Critical region? */
Yann	0:f30e2135b0db	612	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
Yann	0:f30e2135b0db	613	if (pd >= NUM_PPP) {
Yann	0:f30e2135b0db	614	pd = PPPERR_OPEN;
Yann	0:f30e2135b0db	615	} else {
Yann	0:f30e2135b0db	616	pc = &pppControl[pd];
Yann	0:f30e2135b0db	617	memset(pc, 0, sizeof(PPPControl));
Yann	0:f30e2135b0db	618	pc->openFlag = 1;
Yann	0:f30e2135b0db	619	pc->ethif = ethif;
Yann	0:f30e2135b0db	620
Yann	0:f30e2135b0db	621	pc->linkStatusCB = linkStatusCB;
Yann	0:f30e2135b0db	622	pc->linkStatusCtx = linkStatusCtx;
Yann	0:f30e2135b0db	623
Yann	0:f30e2135b0db	624	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
Yann	0:f30e2135b0db	625	lcp_wantoptions[pd].neg_asyncmap = 0;
Yann	0:f30e2135b0db	626	lcp_wantoptions[pd].neg_pcompression = 0;
Yann	0:f30e2135b0db	627	lcp_wantoptions[pd].neg_accompression = 0;
Yann	0:f30e2135b0db	628
Yann	0:f30e2135b0db	629	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
Yann	0:f30e2135b0db	630	lcp_allowoptions[pd].neg_asyncmap = 0;
Yann	0:f30e2135b0db	631	lcp_allowoptions[pd].neg_pcompression = 0;
Yann	0:f30e2135b0db	632	lcp_allowoptions[pd].neg_accompression = 0;
Yann	0:f30e2135b0db	633
Yann	0:f30e2135b0db	634	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
Yann	0:f30e2135b0db	635	pc->openFlag = 0;
Yann	0:f30e2135b0db	636	return PPPERR_OPEN;
Yann	0:f30e2135b0db	637	}
Yann	0:f30e2135b0db	638
Yann	0:f30e2135b0db	639	pppoe_connect(pc->pppoe_sc);
Yann	0:f30e2135b0db	640	}
Yann	0:f30e2135b0db	641
Yann	0:f30e2135b0db	642	return pd;
Yann	0:f30e2135b0db	643	}
Yann	0:f30e2135b0db	644	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	645
Yann	0:f30e2135b0db	646
Yann	0:f30e2135b0db	647	/* Close a PPP connection and release the descriptor.
Yann	0:f30e2135b0db	648	* Any outstanding packets in the queues are dropped.
Yann	0:f30e2135b0db	649	* Return 0 on success, an error code on failure. */
Yann	0:f30e2135b0db	650	int
Yann	0:f30e2135b0db	651	pppClose(int pd)
Yann	0:f30e2135b0db	652	{
Yann	0:f30e2135b0db	653	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	654	int st = 0;
Yann	0:f30e2135b0db	655
Yann	0:f30e2135b0db	656	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
Yann	0:f30e2135b0db	657
Yann	0:f30e2135b0db	658	/* Disconnect */
Yann	0:f30e2135b0db	659	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	660	if(pc->ethif) {
Yann	0:f30e2135b0db	661	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
Yann	0:f30e2135b0db	662	pc->errCode = PPPERR_USER;
Yann	0:f30e2135b0db	663	/* This will leave us at PHASE_DEAD. */
Yann	0:f30e2135b0db	664	pppStop(pd);
Yann	0:f30e2135b0db	665	} else
Yann	0:f30e2135b0db	666	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	667	{
Yann	0:f30e2135b0db	668	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	669	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
Yann	0:f30e2135b0db	670	pc->errCode = PPPERR_USER;
Yann	0:f30e2135b0db	671	/* This will leave us at PHASE_DEAD. */
Yann	0:f30e2135b0db	672	pppStop(pd);
Yann	0:f30e2135b0db	673	pppRecvWakeup(pd);
Yann	0:f30e2135b0db	674	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	675	}
Yann	0:f30e2135b0db	676
Yann	0:f30e2135b0db	677	return st;
Yann	0:f30e2135b0db	678	}
Yann	0:f30e2135b0db	679
Yann	0:f30e2135b0db	680	/* This function is called when carrier is lost on the PPP channel. */
Yann	0:f30e2135b0db	681	void
Yann	0:f30e2135b0db	682	pppSigHUP(int pd)
Yann	0:f30e2135b0db	683	{
Yann	0:f30e2135b0db	684	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	685	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	686	if(pc->ethif) {
Yann	0:f30e2135b0db	687	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
Yann	0:f30e2135b0db	688	pppHup(pd);
Yann	0:f30e2135b0db	689	} else
Yann	0:f30e2135b0db	690	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	691	{
Yann	0:f30e2135b0db	692	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	693	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
Yann	0:f30e2135b0db	694	pppHup(pd);
Yann	0:f30e2135b0db	695	pppRecvWakeup(pd);
Yann	0:f30e2135b0db	696	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	697	}
Yann	0:f30e2135b0db	698	}
Yann	0:f30e2135b0db	699
Yann	0:f30e2135b0db	700	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	701	static void
Yann	0:f30e2135b0db	702	nPut(PPPControl pc, struct pbuf nb)
Yann	0:f30e2135b0db	703	{
Yann	0:f30e2135b0db	704	struct pbuf *b;
Yann	0:f30e2135b0db	705	int c;
Yann	0:f30e2135b0db	706
Yann	0:f30e2135b0db	707	for(b = nb; b != NULL; b = b->next) {
Yann	0:f30e2135b0db	708	if((c = sio_write(pc->fd, (u8_t *)b->payload, b->len)) != b->len) {
Yann	0:f30e2135b0db	709	PPPDEBUG(LOG_WARNING,
Yann	0:f30e2135b0db	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));
Yann	0:f30e2135b0db	711	LINK_STATS_INC(link.err);
Yann	0:f30e2135b0db	712	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
Yann	0:f30e2135b0db	713	snmp_inc_ifoutdiscards(&pc->netif);
Yann	0:f30e2135b0db	714	pbuf_free(nb);
Yann	0:f30e2135b0db	715	return;
Yann	0:f30e2135b0db	716	}
Yann	0:f30e2135b0db	717	}
Yann	0:f30e2135b0db	718
Yann	0:f30e2135b0db	719	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
Yann	0:f30e2135b0db	720	snmp_inc_ifoutucastpkts(&pc->netif);
Yann	0:f30e2135b0db	721	pbuf_free(nb);
Yann	0:f30e2135b0db	722	LINK_STATS_INC(link.xmit);
Yann	0:f30e2135b0db	723	}
Yann	0:f30e2135b0db	724
Yann	0:f30e2135b0db	725	/*
Yann	0:f30e2135b0db	726	* pppAppend - append given character to end of given pbuf. If outACCM
Yann	0:f30e2135b0db	727	* is not NULL and the character needs to be escaped, do so.
Yann	0:f30e2135b0db	728	* If pbuf is full, append another.
Yann	0:f30e2135b0db	729	* Return the current pbuf.
Yann	0:f30e2135b0db	730	*/
Yann	0:f30e2135b0db	731	static struct pbuf *
Yann	0:f30e2135b0db	732	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
Yann	0:f30e2135b0db	733	{
Yann	0:f30e2135b0db	734	struct pbuf *tb = nb;
Yann	0:f30e2135b0db	735
Yann	0:f30e2135b0db	736	/* Make sure there is room for the character and an escape code.
Yann	0:f30e2135b0db	737	* Sure we don't quite fill the buffer if the character doesn't
Yann	0:f30e2135b0db	738	* get escaped but is one character worth complicating this? */
Yann	0:f30e2135b0db	739	/* Note: We assume no packet header. */
Yann	0:f30e2135b0db	740	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
Yann	0:f30e2135b0db	741	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
Yann	0:f30e2135b0db	742	if (tb) {
Yann	0:f30e2135b0db	743	nb->next = tb;
Yann	0:f30e2135b0db	744	} else {
Yann	0:f30e2135b0db	745	LINK_STATS_INC(link.memerr);
Yann	0:f30e2135b0db	746	}
Yann	0:f30e2135b0db	747	nb = tb;
Yann	0:f30e2135b0db	748	}
Yann	0:f30e2135b0db	749
Yann	0:f30e2135b0db	750	if (nb) {
Yann	0:f30e2135b0db	751	if (outACCM && ESCAPE_P(*outACCM, c)) {
Yann	0:f30e2135b0db	752	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
Yann	0:f30e2135b0db	753	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
Yann	0:f30e2135b0db	754	} else {
Yann	0:f30e2135b0db	755	((u_char)nb->payload + nb->len++) = c;
Yann	0:f30e2135b0db	756	}
Yann	0:f30e2135b0db	757	}
Yann	0:f30e2135b0db	758
Yann	0:f30e2135b0db	759	return tb;
Yann	0:f30e2135b0db	760	}
Yann	0:f30e2135b0db	761	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	762
Yann	0:f30e2135b0db	763	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	764	static err_t
Yann	0:f30e2135b0db	765	pppifOutputOverEthernet(int pd, struct pbuf *p)
Yann	0:f30e2135b0db	766	{
Yann	0:f30e2135b0db	767	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	768	struct pbuf *pb;
Yann	0:f30e2135b0db	769	u_short protocol = PPP_IP;
Yann	0:f30e2135b0db	770	int i=0;
Yann	0:f30e2135b0db	771	u16_t tot_len;
Yann	0:f30e2135b0db	772
Yann	0:f30e2135b0db	773	/* @todo: try to use pbuf_header() here! */
Yann	0:f30e2135b0db	774	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
Yann	0:f30e2135b0db	775	if(!pb) {
Yann	0:f30e2135b0db	776	LINK_STATS_INC(link.memerr);
Yann	0:f30e2135b0db	777	LINK_STATS_INC(link.proterr);
Yann	0:f30e2135b0db	778	snmp_inc_ifoutdiscards(&pc->netif);
Yann	0:f30e2135b0db	779	return ERR_MEM;
Yann	0:f30e2135b0db	780	}
Yann	0:f30e2135b0db	781
Yann	0:f30e2135b0db	782	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
Yann	0:f30e2135b0db	783
Yann	0:f30e2135b0db	784	pc->lastXMit = sys_jiffies();
Yann	0:f30e2135b0db	785
Yann	0:f30e2135b0db	786	if (!pc->pcomp \|\| protocol > 0xFF) {
Yann	0:f30e2135b0db	787	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
Yann	0:f30e2135b0db	788	}
Yann	0:f30e2135b0db	789	((u_char)pb->payload + i) = protocol & 0xFF;
Yann	0:f30e2135b0db	790
Yann	0:f30e2135b0db	791	pbuf_chain(pb, p);
Yann	0:f30e2135b0db	792	tot_len = pb->tot_len;
Yann	0:f30e2135b0db	793
Yann	0:f30e2135b0db	794	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
Yann	0:f30e2135b0db	795	LINK_STATS_INC(link.err);
Yann	0:f30e2135b0db	796	snmp_inc_ifoutdiscards(&pc->netif);
Yann	0:f30e2135b0db	797	return PPPERR_DEVICE;
Yann	0:f30e2135b0db	798	}
Yann	0:f30e2135b0db	799
Yann	0:f30e2135b0db	800	snmp_add_ifoutoctets(&pc->netif, tot_len);
Yann	0:f30e2135b0db	801	snmp_inc_ifoutucastpkts(&pc->netif);
Yann	0:f30e2135b0db	802	LINK_STATS_INC(link.xmit);
Yann	0:f30e2135b0db	803	return ERR_OK;
Yann	0:f30e2135b0db	804	}
Yann	0:f30e2135b0db	805	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	806
Yann	0:f30e2135b0db	807	/* Send a packet on the given connection. */
Yann	0:f30e2135b0db	808	static err_t
Yann	0:f30e2135b0db	809	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
Yann	0:f30e2135b0db	810	{
Yann	0:f30e2135b0db	811	int pd = (int)(size_t)netif->state;
Yann	0:f30e2135b0db	812	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	813	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	814	u_short protocol = PPP_IP;
Yann	0:f30e2135b0db	815	u_int fcsOut = PPP_INITFCS;
Yann	0:f30e2135b0db	816	struct pbuf headMB = NULL, tailMB = NULL, *p;
Yann	0:f30e2135b0db	817	u_char c;
Yann	0:f30e2135b0db	818	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	819
Yann	0:f30e2135b0db	820	LWIP_UNUSED_ARG(ipaddr);
Yann	0:f30e2135b0db	821
Yann	0:f30e2135b0db	822	/* Validate parameters. */
Yann	0:f30e2135b0db	823	/* We let any protocol value go through - it can't hurt us
Yann	0:f30e2135b0db	824	* and the peer will just drop it if it's not accepting it. */
Yann	0:f30e2135b0db	825	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
Yann	0:f30e2135b0db	826	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
Yann	0:f30e2135b0db	827	pd, PPP_IP, pb));
Yann	0:f30e2135b0db	828	LINK_STATS_INC(link.opterr);
Yann	0:f30e2135b0db	829	LINK_STATS_INC(link.drop);
Yann	0:f30e2135b0db	830	snmp_inc_ifoutdiscards(netif);
Yann	0:f30e2135b0db	831	return ERR_ARG;
Yann	0:f30e2135b0db	832	}
Yann	0:f30e2135b0db	833
Yann	0:f30e2135b0db	834	/* Check that the link is up. */
Yann	0:f30e2135b0db	835	if (lcp_phase[pd] == PHASE_DEAD) {
Yann	0:f30e2135b0db	836	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
Yann	0:f30e2135b0db	837	LINK_STATS_INC(link.rterr);
Yann	0:f30e2135b0db	838	LINK_STATS_INC(link.drop);
Yann	0:f30e2135b0db	839	snmp_inc_ifoutdiscards(netif);
Yann	0:f30e2135b0db	840	return ERR_RTE;
Yann	0:f30e2135b0db	841	}
Yann	0:f30e2135b0db	842
Yann	0:f30e2135b0db	843	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	844	if(pc->ethif) {
Yann	0:f30e2135b0db	845	return pppifOutputOverEthernet(pd, pb);
Yann	0:f30e2135b0db	846	}
Yann	0:f30e2135b0db	847	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	848
Yann	0:f30e2135b0db	849	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	850	/* Grab an output buffer. */
Yann	0:f30e2135b0db	851	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
Yann	0:f30e2135b0db	852	if (headMB == NULL) {
Yann	0:f30e2135b0db	853	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
Yann	0:f30e2135b0db	854	LINK_STATS_INC(link.memerr);
Yann	0:f30e2135b0db	855	LINK_STATS_INC(link.drop);
Yann	0:f30e2135b0db	856	snmp_inc_ifoutdiscards(netif);
Yann	0:f30e2135b0db	857	return ERR_MEM;
Yann	0:f30e2135b0db	858	}
Yann	0:f30e2135b0db	859
Yann	0:f30e2135b0db	860	#if VJ_SUPPORT
Yann	0:f30e2135b0db	861	/*
Yann	0:f30e2135b0db	862	* Attempt Van Jacobson header compression if VJ is configured and
Yann	0:f30e2135b0db	863	* this is an IP packet.
Yann	0:f30e2135b0db	864	*/
Yann	0:f30e2135b0db	865	if (protocol == PPP_IP && pc->vjEnabled) {
Yann	0:f30e2135b0db	866	switch (vj_compress_tcp(&pc->vjComp, pb)) {
Yann	0:f30e2135b0db	867	case TYPE_IP:
Yann	0:f30e2135b0db	868	/* No change...
Yann	0:f30e2135b0db	869	protocol = PPP_IP_PROTOCOL; */
Yann	0:f30e2135b0db	870	break;
Yann	0:f30e2135b0db	871	case TYPE_COMPRESSED_TCP:
Yann	0:f30e2135b0db	872	protocol = PPP_VJC_COMP;
Yann	0:f30e2135b0db	873	break;
Yann	0:f30e2135b0db	874	case TYPE_UNCOMPRESSED_TCP:
Yann	0:f30e2135b0db	875	protocol = PPP_VJC_UNCOMP;
Yann	0:f30e2135b0db	876	break;
Yann	0:f30e2135b0db	877	default:
Yann	0:f30e2135b0db	878	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
Yann	0:f30e2135b0db	879	LINK_STATS_INC(link.proterr);
Yann	0:f30e2135b0db	880	LINK_STATS_INC(link.drop);
Yann	0:f30e2135b0db	881	snmp_inc_ifoutdiscards(netif);
Yann	0:f30e2135b0db	882	pbuf_free(headMB);
Yann	0:f30e2135b0db	883	return ERR_VAL;
Yann	0:f30e2135b0db	884	}
Yann	0:f30e2135b0db	885	}
Yann	0:f30e2135b0db	886	#endif /* VJ_SUPPORT */
Yann	0:f30e2135b0db	887
Yann	0:f30e2135b0db	888	tailMB = headMB;
Yann	0:f30e2135b0db	889
Yann	0:f30e2135b0db	890	/* Build the PPP header. */
Yann	0:f30e2135b0db	891	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
Yann	0:f30e2135b0db	892	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
Yann	0:f30e2135b0db	893	}
Yann	0:f30e2135b0db	894
Yann	0:f30e2135b0db	895	pc->lastXMit = sys_jiffies();
Yann	0:f30e2135b0db	896	if (!pc->accomp) {
Yann	0:f30e2135b0db	897	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
Yann	0:f30e2135b0db	898	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
Yann	0:f30e2135b0db	899	fcsOut = PPP_FCS(fcsOut, PPP_UI);
Yann	0:f30e2135b0db	900	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
Yann	0:f30e2135b0db	901	}
Yann	0:f30e2135b0db	902	if (!pc->pcomp \|\| protocol > 0xFF) {
Yann	0:f30e2135b0db	903	c = (protocol >> 8) & 0xFF;
Yann	0:f30e2135b0db	904	fcsOut = PPP_FCS(fcsOut, c);
Yann	0:f30e2135b0db	905	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Yann	0:f30e2135b0db	906	}
Yann	0:f30e2135b0db	907	c = protocol & 0xFF;
Yann	0:f30e2135b0db	908	fcsOut = PPP_FCS(fcsOut, c);
Yann	0:f30e2135b0db	909	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Yann	0:f30e2135b0db	910
Yann	0:f30e2135b0db	911	/* Load packet. */
Yann	0:f30e2135b0db	912	for(p = pb; p; p = p->next) {
Yann	0:f30e2135b0db	913	int n;
Yann	0:f30e2135b0db	914	u_char *sPtr;
Yann	0:f30e2135b0db	915
Yann	0:f30e2135b0db	916	sPtr = (u_char*)p->payload;
Yann	0:f30e2135b0db	917	n = p->len;
Yann	0:f30e2135b0db	918	while (n-- > 0) {
Yann	0:f30e2135b0db	919	c = *sPtr++;
Yann	0:f30e2135b0db	920
Yann	0:f30e2135b0db	921	/* Update FCS before checking for special characters. */
Yann	0:f30e2135b0db	922	fcsOut = PPP_FCS(fcsOut, c);
Yann	0:f30e2135b0db	923
Yann	0:f30e2135b0db	924	/* Copy to output buffer escaping special characters. */
Yann	0:f30e2135b0db	925	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Yann	0:f30e2135b0db	926	}
Yann	0:f30e2135b0db	927	}
Yann	0:f30e2135b0db	928
Yann	0:f30e2135b0db	929	/* Add FCS and trailing flag. */
Yann	0:f30e2135b0db	930	c = ~fcsOut & 0xFF;
Yann	0:f30e2135b0db	931	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Yann	0:f30e2135b0db	932	c = (~fcsOut >> 8) & 0xFF;
Yann	0:f30e2135b0db	933	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Yann	0:f30e2135b0db	934	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
Yann	0:f30e2135b0db	935
Yann	0:f30e2135b0db	936	/* If we failed to complete the packet, throw it away. */
Yann	0:f30e2135b0db	937	if (!tailMB) {
Yann	0:f30e2135b0db	938	PPPDEBUG(LOG_WARNING,
Yann	0:f30e2135b0db	939	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
Yann	0:f30e2135b0db	940	pd, protocol));
Yann	0:f30e2135b0db	941	pbuf_free(headMB);
Yann	0:f30e2135b0db	942	LINK_STATS_INC(link.memerr);
Yann	0:f30e2135b0db	943	LINK_STATS_INC(link.drop);
Yann	0:f30e2135b0db	944	snmp_inc_ifoutdiscards(netif);
Yann	0:f30e2135b0db	945	return ERR_MEM;
Yann	0:f30e2135b0db	946	}
Yann	0:f30e2135b0db	947
Yann	0:f30e2135b0db	948	/* Send it. */
Yann	0:f30e2135b0db	949	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
Yann	0:f30e2135b0db	950
Yann	0:f30e2135b0db	951	nPut(pc, headMB);
Yann	0:f30e2135b0db	952	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	953
Yann	0:f30e2135b0db	954	return ERR_OK;
Yann	0:f30e2135b0db	955	}
Yann	0:f30e2135b0db	956
Yann	0:f30e2135b0db	957	/* Get and set parameters for the given connection.
Yann	0:f30e2135b0db	958	* Return 0 on success, an error code on failure. */
Yann	0:f30e2135b0db	959	int
Yann	0:f30e2135b0db	960	pppIOCtl(int pd, int cmd, void *arg)
Yann	0:f30e2135b0db	961	{
Yann	0:f30e2135b0db	962	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	963	int st = 0;
Yann	0:f30e2135b0db	964
Yann	0:f30e2135b0db	965	if (pd < 0 \|\| pd >= NUM_PPP) {
Yann	0:f30e2135b0db	966	st = PPPERR_PARAM;
Yann	0:f30e2135b0db	967	} else {
Yann	0:f30e2135b0db	968	switch(cmd) {
Yann	0:f30e2135b0db	969	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
Yann	0:f30e2135b0db	970	if (arg) {
Yann	0:f30e2135b0db	971	(int )arg = (int)(pc->if_up);
Yann	0:f30e2135b0db	972	} else {
Yann	0:f30e2135b0db	973	st = PPPERR_PARAM;
Yann	0:f30e2135b0db	974	}
Yann	0:f30e2135b0db	975	break;
Yann	0:f30e2135b0db	976	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
Yann	0:f30e2135b0db	977	if (arg) {
Yann	0:f30e2135b0db	978	pc->errCode = (int )arg;
Yann	0:f30e2135b0db	979	} else {
Yann	0:f30e2135b0db	980	st = PPPERR_PARAM;
Yann	0:f30e2135b0db	981	}
Yann	0:f30e2135b0db	982	break;
Yann	0:f30e2135b0db	983	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
Yann	0:f30e2135b0db	984	if (arg) {
Yann	0:f30e2135b0db	985	(int )arg = (int)(pc->errCode);
Yann	0:f30e2135b0db	986	} else {
Yann	0:f30e2135b0db	987	st = PPPERR_PARAM;
Yann	0:f30e2135b0db	988	}
Yann	0:f30e2135b0db	989	break;
Yann	0:f30e2135b0db	990	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	991	case PPPCTLG_FD: /* Get the fd associated with the ppp */
Yann	0:f30e2135b0db	992	if (arg) {
Yann	0:f30e2135b0db	993	(sio_fd_t )arg = pc->fd;
Yann	0:f30e2135b0db	994	} else {
Yann	0:f30e2135b0db	995	st = PPPERR_PARAM;
Yann	0:f30e2135b0db	996	}
Yann	0:f30e2135b0db	997	break;
Yann	0:f30e2135b0db	998	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	999	default:
Yann	0:f30e2135b0db	1000	st = PPPERR_PARAM;
Yann	0:f30e2135b0db	1001	break;
Yann	0:f30e2135b0db	1002	}
Yann	0:f30e2135b0db	1003	}
Yann	0:f30e2135b0db	1004
Yann	0:f30e2135b0db	1005	return st;
Yann	0:f30e2135b0db	1006	}
Yann	0:f30e2135b0db	1007
Yann	0:f30e2135b0db	1008	/*
Yann	0:f30e2135b0db	1009	* Return the Maximum Transmission Unit for the given PPP connection.
Yann	0:f30e2135b0db	1010	*/
Yann	0:f30e2135b0db	1011	u_short
Yann	0:f30e2135b0db	1012	pppMTU(int pd)
Yann	0:f30e2135b0db	1013	{
Yann	0:f30e2135b0db	1014	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	1015	u_short st;
Yann	0:f30e2135b0db	1016
Yann	0:f30e2135b0db	1017	/* Validate parameters. */
Yann	0:f30e2135b0db	1018	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Yann	0:f30e2135b0db	1019	st = 0;
Yann	0:f30e2135b0db	1020	} else {
Yann	0:f30e2135b0db	1021	st = pc->mtu;
Yann	0:f30e2135b0db	1022	}
Yann	0:f30e2135b0db	1023
Yann	0:f30e2135b0db	1024	return st;
Yann	0:f30e2135b0db	1025	}
Yann	0:f30e2135b0db	1026
Yann	0:f30e2135b0db	1027	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	1028	int
Yann	0:f30e2135b0db	1029	pppWriteOverEthernet(int pd, const u_char *s, int n)
Yann	0:f30e2135b0db	1030	{
Yann	0:f30e2135b0db	1031	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	1032	struct pbuf *pb;
Yann	0:f30e2135b0db	1033
Yann	0:f30e2135b0db	1034	/* skip address & flags */
Yann	0:f30e2135b0db	1035	s += 2;
Yann	0:f30e2135b0db	1036	n -= 2;
Yann	0:f30e2135b0db	1037
Yann	0:f30e2135b0db	1038	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
Yann	0:f30e2135b0db	1039	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
Yann	0:f30e2135b0db	1040	if(!pb) {
Yann	0:f30e2135b0db	1041	LINK_STATS_INC(link.memerr);
Yann	0:f30e2135b0db	1042	LINK_STATS_INC(link.proterr);
Yann	0:f30e2135b0db	1043	snmp_inc_ifoutdiscards(&pc->netif);
Yann	0:f30e2135b0db	1044	return PPPERR_ALLOC;
Yann	0:f30e2135b0db	1045	}
Yann	0:f30e2135b0db	1046
Yann	0:f30e2135b0db	1047	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
Yann	0:f30e2135b0db	1048
Yann	0:f30e2135b0db	1049	pc->lastXMit = sys_jiffies();
Yann	0:f30e2135b0db	1050
Yann	0:f30e2135b0db	1051	MEMCPY(pb->payload, s, n);
Yann	0:f30e2135b0db	1052
Yann	0:f30e2135b0db	1053	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
Yann	0:f30e2135b0db	1054	LINK_STATS_INC(link.err);
Yann	0:f30e2135b0db	1055	snmp_inc_ifoutdiscards(&pc->netif);
Yann	0:f30e2135b0db	1056	return PPPERR_DEVICE;
Yann	0:f30e2135b0db	1057	}
Yann	0:f30e2135b0db	1058
Yann	0:f30e2135b0db	1059	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
Yann	0:f30e2135b0db	1060	snmp_inc_ifoutucastpkts(&pc->netif);
Yann	0:f30e2135b0db	1061	LINK_STATS_INC(link.xmit);
Yann	0:f30e2135b0db	1062	return PPPERR_NONE;
Yann	0:f30e2135b0db	1063	}
Yann	0:f30e2135b0db	1064	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	1065
Yann	0:f30e2135b0db	1066	/*
Yann	0:f30e2135b0db	1067	* Write n characters to a ppp link.
Yann	0:f30e2135b0db	1068	* RETURN: >= 0 Number of characters written
Yann	0:f30e2135b0db	1069	* -1 Failed to write to device
Yann	0:f30e2135b0db	1070	*/
Yann	0:f30e2135b0db	1071	int
Yann	0:f30e2135b0db	1072	pppWrite(int pd, const u_char *s, int n)
Yann	0:f30e2135b0db	1073	{
Yann	0:f30e2135b0db	1074	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	1075	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	1076	u_char c;
Yann	0:f30e2135b0db	1077	u_int fcsOut;
Yann	0:f30e2135b0db	1078	struct pbuf headMB, tailMB;
Yann	0:f30e2135b0db	1079	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	1080
Yann	0:f30e2135b0db	1081	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	1082	if(pc->ethif) {
Yann	0:f30e2135b0db	1083	return pppWriteOverEthernet(pd, s, n);
Yann	0:f30e2135b0db	1084	}
Yann	0:f30e2135b0db	1085	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	1086
Yann	0:f30e2135b0db	1087	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	1088	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
Yann	0:f30e2135b0db	1089	if (headMB == NULL) {
Yann	0:f30e2135b0db	1090	LINK_STATS_INC(link.memerr);
Yann	0:f30e2135b0db	1091	LINK_STATS_INC(link.proterr);
Yann	0:f30e2135b0db	1092	snmp_inc_ifoutdiscards(&pc->netif);
Yann	0:f30e2135b0db	1093	return PPPERR_ALLOC;
Yann	0:f30e2135b0db	1094	}
Yann	0:f30e2135b0db	1095
Yann	0:f30e2135b0db	1096	tailMB = headMB;
Yann	0:f30e2135b0db	1097
Yann	0:f30e2135b0db	1098	/* If the link has been idle, we'll send a fresh flag character to
Yann	0:f30e2135b0db	1099	* flush any noise. */
Yann	0:f30e2135b0db	1100	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
Yann	0:f30e2135b0db	1101	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
Yann	0:f30e2135b0db	1102	}
Yann	0:f30e2135b0db	1103	pc->lastXMit = sys_jiffies();
Yann	0:f30e2135b0db	1104
Yann	0:f30e2135b0db	1105	fcsOut = PPP_INITFCS;
Yann	0:f30e2135b0db	1106	/* Load output buffer. */
Yann	0:f30e2135b0db	1107	while (n-- > 0) {
Yann	0:f30e2135b0db	1108	c = *s++;
Yann	0:f30e2135b0db	1109
Yann	0:f30e2135b0db	1110	/* Update FCS before checking for special characters. */
Yann	0:f30e2135b0db	1111	fcsOut = PPP_FCS(fcsOut, c);
Yann	0:f30e2135b0db	1112
Yann	0:f30e2135b0db	1113	/* Copy to output buffer escaping special characters. */
Yann	0:f30e2135b0db	1114	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Yann	0:f30e2135b0db	1115	}
Yann	0:f30e2135b0db	1116
Yann	0:f30e2135b0db	1117	/* Add FCS and trailing flag. */
Yann	0:f30e2135b0db	1118	c = ~fcsOut & 0xFF;
Yann	0:f30e2135b0db	1119	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Yann	0:f30e2135b0db	1120	c = (~fcsOut >> 8) & 0xFF;
Yann	0:f30e2135b0db	1121	tailMB = pppAppend(c, tailMB, &pc->outACCM);
Yann	0:f30e2135b0db	1122	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
Yann	0:f30e2135b0db	1123
Yann	0:f30e2135b0db	1124	/* If we failed to complete the packet, throw it away.
Yann	0:f30e2135b0db	1125	* Otherwise send it. */
Yann	0:f30e2135b0db	1126	if (!tailMB) {
Yann	0:f30e2135b0db	1127	PPPDEBUG(LOG_WARNING,
Yann	0:f30e2135b0db	1128	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
Yann	0:f30e2135b0db	1129	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
Yann	0:f30e2135b0db	1130	pbuf_free(headMB);
Yann	0:f30e2135b0db	1131	LINK_STATS_INC(link.memerr);
Yann	0:f30e2135b0db	1132	LINK_STATS_INC(link.proterr);
Yann	0:f30e2135b0db	1133	snmp_inc_ifoutdiscards(&pc->netif);
Yann	0:f30e2135b0db	1134	return PPPERR_ALLOC;
Yann	0:f30e2135b0db	1135	}
Yann	0:f30e2135b0db	1136
Yann	0:f30e2135b0db	1137	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
Yann	0:f30e2135b0db	1138	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
Yann	0:f30e2135b0db	1139	nPut(pc, headMB);
Yann	0:f30e2135b0db	1140	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	1141
Yann	0:f30e2135b0db	1142	return PPPERR_NONE;
Yann	0:f30e2135b0db	1143	}
Yann	0:f30e2135b0db	1144
Yann	0:f30e2135b0db	1145	/*
Yann	0:f30e2135b0db	1146	* ppp_send_config - configure the transmit characteristics of
Yann	0:f30e2135b0db	1147	* the ppp interface.
Yann	0:f30e2135b0db	1148	*/
Yann	0:f30e2135b0db	1149	void
Yann	0:f30e2135b0db	1150	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
Yann	0:f30e2135b0db	1151	{
Yann	0:f30e2135b0db	1152	PPPControl *pc = &pppControl[unit];
Yann	0:f30e2135b0db	1153	int i;
Yann	0:f30e2135b0db	1154
Yann	0:f30e2135b0db	1155	pc->mtu = mtu;
Yann	0:f30e2135b0db	1156	pc->pcomp = pcomp;
Yann	0:f30e2135b0db	1157	pc->accomp = accomp;
Yann	0:f30e2135b0db	1158
Yann	0:f30e2135b0db	1159	/* Load the ACCM bits for the 32 control codes. */
Yann	0:f30e2135b0db	1160	for (i = 0; i < 32/8; i++) {
Yann	0:f30e2135b0db	1161	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
Yann	0:f30e2135b0db	1162	}
Yann	0:f30e2135b0db	1163	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
Yann	0:f30e2135b0db	1164	unit,
Yann	0:f30e2135b0db	1165	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
Yann	0:f30e2135b0db	1166	}
Yann	0:f30e2135b0db	1167
Yann	0:f30e2135b0db	1168
Yann	0:f30e2135b0db	1169	/*
Yann	0:f30e2135b0db	1170	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
Yann	0:f30e2135b0db	1171	*/
Yann	0:f30e2135b0db	1172	void
Yann	0:f30e2135b0db	1173	ppp_set_xaccm(int unit, ext_accm *accm)
Yann	0:f30e2135b0db	1174	{
Yann	0:f30e2135b0db	1175	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
Yann	0:f30e2135b0db	1176	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
Yann	0:f30e2135b0db	1177	unit,
Yann	0:f30e2135b0db	1178	pppControl[unit].outACCM[0],
Yann	0:f30e2135b0db	1179	pppControl[unit].outACCM[1],
Yann	0:f30e2135b0db	1180	pppControl[unit].outACCM[2],
Yann	0:f30e2135b0db	1181	pppControl[unit].outACCM[3]));
Yann	0:f30e2135b0db	1182	}
Yann	0:f30e2135b0db	1183
Yann	0:f30e2135b0db	1184
Yann	0:f30e2135b0db	1185	/*
Yann	0:f30e2135b0db	1186	* ppp_recv_config - configure the receive-side characteristics of
Yann	0:f30e2135b0db	1187	* the ppp interface.
Yann	0:f30e2135b0db	1188	*/
Yann	0:f30e2135b0db	1189	void
Yann	0:f30e2135b0db	1190	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
Yann	0:f30e2135b0db	1191	{
Yann	0:f30e2135b0db	1192	PPPControl *pc = &pppControl[unit];
Yann	0:f30e2135b0db	1193	int i;
Yann	0:f30e2135b0db	1194	SYS_ARCH_DECL_PROTECT(lev);
Yann	0:f30e2135b0db	1195
Yann	0:f30e2135b0db	1196	LWIP_UNUSED_ARG(accomp);
Yann	0:f30e2135b0db	1197	LWIP_UNUSED_ARG(pcomp);
Yann	0:f30e2135b0db	1198	LWIP_UNUSED_ARG(mru);
Yann	0:f30e2135b0db	1199
Yann	0:f30e2135b0db	1200	/* Load the ACCM bits for the 32 control codes. */
Yann	0:f30e2135b0db	1201	SYS_ARCH_PROTECT(lev);
Yann	0:f30e2135b0db	1202	for (i = 0; i < 32 / 8; i++) {
Yann	0:f30e2135b0db	1203	/* @todo: does this work? ext_accm has been modified from pppd! */
Yann	0:f30e2135b0db	1204	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
Yann	0:f30e2135b0db	1205	}
Yann	0:f30e2135b0db	1206	SYS_ARCH_UNPROTECT(lev);
Yann	0:f30e2135b0db	1207	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
Yann	0:f30e2135b0db	1208	unit,
Yann	0:f30e2135b0db	1209	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
Yann	0:f30e2135b0db	1210	}
Yann	0:f30e2135b0db	1211
Yann	0:f30e2135b0db	1212	#if 0
Yann	0:f30e2135b0db	1213	/*
Yann	0:f30e2135b0db	1214	* ccp_test - ask kernel whether a given compression method
Yann	0:f30e2135b0db	1215	* is acceptable for use. Returns 1 if the method and parameters
Yann	0:f30e2135b0db	1216	* are OK, 0 if the method is known but the parameters are not OK
Yann	0:f30e2135b0db	1217	* (e.g. code size should be reduced), or -1 if the method is unknown.
Yann	0:f30e2135b0db	1218	*/
Yann	0:f30e2135b0db	1219	int
Yann	0:f30e2135b0db	1220	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
Yann	0:f30e2135b0db	1221	{
Yann	0:f30e2135b0db	1222	return 0; /* XXX Currently no compression. */
Yann	0:f30e2135b0db	1223	}
Yann	0:f30e2135b0db	1224
Yann	0:f30e2135b0db	1225	/*
Yann	0:f30e2135b0db	1226	* ccp_flags_set - inform kernel about the current state of CCP.
Yann	0:f30e2135b0db	1227	*/
Yann	0:f30e2135b0db	1228	void
Yann	0:f30e2135b0db	1229	ccp_flags_set(int unit, int isopen, int isup)
Yann	0:f30e2135b0db	1230	{
Yann	0:f30e2135b0db	1231	/* XXX */
Yann	0:f30e2135b0db	1232	}
Yann	0:f30e2135b0db	1233
Yann	0:f30e2135b0db	1234	/*
Yann	0:f30e2135b0db	1235	* ccp_fatal_error - returns 1 if decompression was disabled as a
Yann	0:f30e2135b0db	1236	* result of an error detected after decompression of a packet,
Yann	0:f30e2135b0db	1237	* 0 otherwise. This is necessary because of patent nonsense.
Yann	0:f30e2135b0db	1238	*/
Yann	0:f30e2135b0db	1239	int
Yann	0:f30e2135b0db	1240	ccp_fatal_error(int unit)
Yann	0:f30e2135b0db	1241	{
Yann	0:f30e2135b0db	1242	/* XXX */
Yann	0:f30e2135b0db	1243	return 0;
Yann	0:f30e2135b0db	1244	}
Yann	0:f30e2135b0db	1245	#endif
Yann	0:f30e2135b0db	1246
Yann	0:f30e2135b0db	1247	/*
Yann	0:f30e2135b0db	1248	* get_idle_time - return how long the link has been idle.
Yann	0:f30e2135b0db	1249	*/
Yann	0:f30e2135b0db	1250	int
Yann	0:f30e2135b0db	1251	get_idle_time(int u, struct ppp_idle *ip)
Yann	0:f30e2135b0db	1252	{
Yann	0:f30e2135b0db	1253	/* XXX */
Yann	0:f30e2135b0db	1254	LWIP_UNUSED_ARG(u);
Yann	0:f30e2135b0db	1255	LWIP_UNUSED_ARG(ip);
Yann	0:f30e2135b0db	1256
Yann	0:f30e2135b0db	1257	return 0;
Yann	0:f30e2135b0db	1258	}
Yann	0:f30e2135b0db	1259
Yann	0:f30e2135b0db	1260
Yann	0:f30e2135b0db	1261	/*
Yann	0:f30e2135b0db	1262	* Return user specified netmask, modified by any mask we might determine
Yann	0:f30e2135b0db	1263	* for address `addr' (in network byte order).
Yann	0:f30e2135b0db	1264	* Here we scan through the system's list of interfaces, looking for
Yann	0:f30e2135b0db	1265	* any non-point-to-point interfaces which might appear to be on the same
Yann	0:f30e2135b0db	1266	* network as `addr'. If we find any, we OR in their netmask to the
Yann	0:f30e2135b0db	1267	* user-specified netmask.
Yann	0:f30e2135b0db	1268	*/
Yann	0:f30e2135b0db	1269	u32_t
Yann	0:f30e2135b0db	1270	GetMask(u32_t addr)
Yann	0:f30e2135b0db	1271	{
Yann	0:f30e2135b0db	1272	u32_t mask, nmask;
Yann	0:f30e2135b0db	1273
Yann	0:f30e2135b0db	1274	htonl(addr);
Yann	0:f30e2135b0db	1275	if (IP_CLASSA(addr)) { /* determine network mask for address class */
Yann	0:f30e2135b0db	1276	nmask = IP_CLASSA_NET;
Yann	0:f30e2135b0db	1277	} else if (IP_CLASSB(addr)) {
Yann	0:f30e2135b0db	1278	nmask = IP_CLASSB_NET;
Yann	0:f30e2135b0db	1279	} else {
Yann	0:f30e2135b0db	1280	nmask = IP_CLASSC_NET;
Yann	0:f30e2135b0db	1281	}
Yann	0:f30e2135b0db	1282
Yann	0:f30e2135b0db	1283	/* class D nets are disallowed by bad_ip_adrs */
Yann	0:f30e2135b0db	1284	mask = subnetMask \| htonl(nmask);
Yann	0:f30e2135b0db	1285
Yann	0:f30e2135b0db	1286	/* XXX
Yann	0:f30e2135b0db	1287	* Scan through the system's network interfaces.
Yann	0:f30e2135b0db	1288	* Get each netmask and OR them into our mask.
Yann	0:f30e2135b0db	1289	*/
Yann	0:f30e2135b0db	1290
Yann	0:f30e2135b0db	1291	return mask;
Yann	0:f30e2135b0db	1292	}
Yann	0:f30e2135b0db	1293
Yann	0:f30e2135b0db	1294	/*
Yann	0:f30e2135b0db	1295	* sifvjcomp - config tcp header compression
Yann	0:f30e2135b0db	1296	*/
Yann	0:f30e2135b0db	1297	int
Yann	0:f30e2135b0db	1298	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
Yann	0:f30e2135b0db	1299	{
Yann	0:f30e2135b0db	1300	#if PPPOS_SUPPORT && VJ_SUPPORT
Yann	0:f30e2135b0db	1301	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	1302
Yann	0:f30e2135b0db	1303	pc->vjEnabled = vjcomp;
Yann	0:f30e2135b0db	1304	pc->vjComp.compressSlot = cidcomp;
Yann	0:f30e2135b0db	1305	pc->vjComp.maxSlotIndex = maxcid;
Yann	0:f30e2135b0db	1306	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
Yann	0:f30e2135b0db	1307	vjcomp, cidcomp, maxcid));
Yann	0:f30e2135b0db	1308	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
Yann	0:f30e2135b0db	1309	LWIP_UNUSED_ARG(pd);
Yann	0:f30e2135b0db	1310	LWIP_UNUSED_ARG(vjcomp);
Yann	0:f30e2135b0db	1311	LWIP_UNUSED_ARG(cidcomp);
Yann	0:f30e2135b0db	1312	LWIP_UNUSED_ARG(maxcid);
Yann	0:f30e2135b0db	1313	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
Yann	0:f30e2135b0db	1314
Yann	0:f30e2135b0db	1315	return 0;
Yann	0:f30e2135b0db	1316	}
Yann	0:f30e2135b0db	1317
Yann	0:f30e2135b0db	1318	/*
Yann	0:f30e2135b0db	1319	* pppifNetifInit - netif init callback
Yann	0:f30e2135b0db	1320	*/
Yann	0:f30e2135b0db	1321	static err_t
Yann	0:f30e2135b0db	1322	pppifNetifInit(struct netif *netif)
Yann	0:f30e2135b0db	1323	{
Yann	0:f30e2135b0db	1324	netif->name[0] = 'p';
Yann	0:f30e2135b0db	1325	netif->name[1] = 'p';
Yann	0:f30e2135b0db	1326	netif->output = pppifOutput;
Yann	0:f30e2135b0db	1327	netif->mtu = pppMTU((int)(size_t)netif->state);
Yann	0:f30e2135b0db	1328	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
Yann	0:f30e2135b0db	1329	#if LWIP_NETIF_HOSTNAME
Yann	0:f30e2135b0db	1330	/* @todo: Initialize interface hostname */
Yann	0:f30e2135b0db	1331	/* netif_set_hostname(netif, "lwip"); */
Yann	0:f30e2135b0db	1332	#endif /* LWIP_NETIF_HOSTNAME */
Yann	0:f30e2135b0db	1333	return ERR_OK;
Yann	0:f30e2135b0db	1334	}
Yann	0:f30e2135b0db	1335
Yann	0:f30e2135b0db	1336
Yann	0:f30e2135b0db	1337	/*
Yann	0:f30e2135b0db	1338	* sifup - Config the interface up and enable IP packets to pass.
Yann	0:f30e2135b0db	1339	*/
Yann	0:f30e2135b0db	1340	int
Yann	0:f30e2135b0db	1341	sifup(int pd)
Yann	0:f30e2135b0db	1342	{
Yann	0:f30e2135b0db	1343	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	1344	int st = 1;
Yann	0:f30e2135b0db	1345
Yann	0:f30e2135b0db	1346	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Yann	0:f30e2135b0db	1347	st = 0;
Yann	0:f30e2135b0db	1348	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
Yann	0:f30e2135b0db	1349	} else {
Yann	0:f30e2135b0db	1350	netif_remove(&pc->netif);
Yann	0:f30e2135b0db	1351	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
Yann	0:f30e2135b0db	1352	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
Yann	0:f30e2135b0db	1353	netif_set_up(&pc->netif);
Yann	0:f30e2135b0db	1354	pc->if_up = 1;
Yann	0:f30e2135b0db	1355	pc->errCode = PPPERR_NONE;
Yann	0:f30e2135b0db	1356
Yann	0:f30e2135b0db	1357	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
Yann	0:f30e2135b0db	1358	if (pc->linkStatusCB) {
Yann	0:f30e2135b0db	1359	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
Yann	0:f30e2135b0db	1360	}
Yann	0:f30e2135b0db	1361	} else {
Yann	0:f30e2135b0db	1362	st = 0;
Yann	0:f30e2135b0db	1363	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
Yann	0:f30e2135b0db	1364	}
Yann	0:f30e2135b0db	1365	}
Yann	0:f30e2135b0db	1366
Yann	0:f30e2135b0db	1367	return st;
Yann	0:f30e2135b0db	1368	}
Yann	0:f30e2135b0db	1369
Yann	0:f30e2135b0db	1370	/*
Yann	0:f30e2135b0db	1371	* sifnpmode - Set the mode for handling packets for a given NP.
Yann	0:f30e2135b0db	1372	*/
Yann	0:f30e2135b0db	1373	int
Yann	0:f30e2135b0db	1374	sifnpmode(int u, int proto, enum NPmode mode)
Yann	0:f30e2135b0db	1375	{
Yann	0:f30e2135b0db	1376	LWIP_UNUSED_ARG(u);
Yann	0:f30e2135b0db	1377	LWIP_UNUSED_ARG(proto);
Yann	0:f30e2135b0db	1378	LWIP_UNUSED_ARG(mode);
Yann	0:f30e2135b0db	1379	return 0;
Yann	0:f30e2135b0db	1380	}
Yann	0:f30e2135b0db	1381
Yann	0:f30e2135b0db	1382	/*
Yann	0:f30e2135b0db	1383	* sifdown - Config the interface down and disable IP.
Yann	0:f30e2135b0db	1384	*/
Yann	0:f30e2135b0db	1385	int
Yann	0:f30e2135b0db	1386	sifdown(int pd)
Yann	0:f30e2135b0db	1387	{
Yann	0:f30e2135b0db	1388	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	1389	int st = 1;
Yann	0:f30e2135b0db	1390
Yann	0:f30e2135b0db	1391	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Yann	0:f30e2135b0db	1392	st = 0;
Yann	0:f30e2135b0db	1393	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
Yann	0:f30e2135b0db	1394	} else {
Yann	0:f30e2135b0db	1395	pc->if_up = 0;
Yann	0:f30e2135b0db	1396	/* make sure the netif status callback is called */
Yann	0:f30e2135b0db	1397	netif_set_down(&pc->netif);
Yann	0:f30e2135b0db	1398	netif_remove(&pc->netif);
Yann	0:f30e2135b0db	1399	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
Yann	0:f30e2135b0db	1400	if (pc->linkStatusCB) {
Yann	0:f30e2135b0db	1401	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
Yann	0:f30e2135b0db	1402	}
Yann	0:f30e2135b0db	1403	}
Yann	0:f30e2135b0db	1404	return st;
Yann	0:f30e2135b0db	1405	}
Yann	0:f30e2135b0db	1406
Yann	0:f30e2135b0db	1407	/**
Yann	0:f30e2135b0db	1408	* sifaddr - Config the interface IP addresses and netmask.
Yann	0:f30e2135b0db	1409	* @param pd Interface unit ???
Yann	0:f30e2135b0db	1410	* @param o Our IP address ???
Yann	0:f30e2135b0db	1411	* @param h His IP address ???
Yann	0:f30e2135b0db	1412	* @param m IP subnet mask ???
Yann	0:f30e2135b0db	1413	* @param ns1 Primary DNS
Yann	0:f30e2135b0db	1414	* @param ns2 Secondary DNS
Yann	0:f30e2135b0db	1415	*/
Yann	0:f30e2135b0db	1416	int
Yann	0:f30e2135b0db	1417	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
Yann	0:f30e2135b0db	1418	{
Yann	0:f30e2135b0db	1419	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	1420	int st = 1;
Yann	0:f30e2135b0db	1421
Yann	0:f30e2135b0db	1422	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Yann	0:f30e2135b0db	1423	st = 0;
Yann	0:f30e2135b0db	1424	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
Yann	0:f30e2135b0db	1425	} else {
Yann	0:f30e2135b0db	1426	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
Yann	0:f30e2135b0db	1427	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
Yann	0:f30e2135b0db	1428	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
Yann	0:f30e2135b0db	1429	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
Yann	0:f30e2135b0db	1430	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
Yann	0:f30e2135b0db	1431	}
Yann	0:f30e2135b0db	1432	return st;
Yann	0:f30e2135b0db	1433	}
Yann	0:f30e2135b0db	1434
Yann	0:f30e2135b0db	1435	/**
Yann	0:f30e2135b0db	1436	* cifaddr - Clear the interface IP addresses, and delete routes
Yann	0:f30e2135b0db	1437	* through the interface if possible.
Yann	0:f30e2135b0db	1438	* @param pd Interface unit ???
Yann	0:f30e2135b0db	1439	* @param o Our IP address ???
Yann	0:f30e2135b0db	1440	* @param h IP broadcast address ???
Yann	0:f30e2135b0db	1441	*/
Yann	0:f30e2135b0db	1442	int
Yann	0:f30e2135b0db	1443	cifaddr( int pd, u32_t o, u32_t h)
Yann	0:f30e2135b0db	1444	{
Yann	0:f30e2135b0db	1445	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	1446	int st = 1;
Yann	0:f30e2135b0db	1447
Yann	0:f30e2135b0db	1448	LWIP_UNUSED_ARG(o);
Yann	0:f30e2135b0db	1449	LWIP_UNUSED_ARG(h);
Yann	0:f30e2135b0db	1450	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Yann	0:f30e2135b0db	1451	st = 0;
Yann	0:f30e2135b0db	1452	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
Yann	0:f30e2135b0db	1453	} else {
Yann	0:f30e2135b0db	1454	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
Yann	0:f30e2135b0db	1455	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
Yann	0:f30e2135b0db	1456	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
Yann	0:f30e2135b0db	1457	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
Yann	0:f30e2135b0db	1458	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
Yann	0:f30e2135b0db	1459	}
Yann	0:f30e2135b0db	1460	return st;
Yann	0:f30e2135b0db	1461	}
Yann	0:f30e2135b0db	1462
Yann	0:f30e2135b0db	1463	/*
Yann	0:f30e2135b0db	1464	* sifdefaultroute - assign a default route through the address given.
Yann	0:f30e2135b0db	1465	*/
Yann	0:f30e2135b0db	1466	int
Yann	0:f30e2135b0db	1467	sifdefaultroute(int pd, u32_t l, u32_t g)
Yann	0:f30e2135b0db	1468	{
Yann	0:f30e2135b0db	1469	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	1470	int st = 1;
Yann	0:f30e2135b0db	1471
Yann	0:f30e2135b0db	1472	LWIP_UNUSED_ARG(l);
Yann	0:f30e2135b0db	1473	LWIP_UNUSED_ARG(g);
Yann	0:f30e2135b0db	1474
Yann	0:f30e2135b0db	1475	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Yann	0:f30e2135b0db	1476	st = 0;
Yann	0:f30e2135b0db	1477	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
Yann	0:f30e2135b0db	1478	} else {
Yann	0:f30e2135b0db	1479	netif_set_default(&pc->netif);
Yann	0:f30e2135b0db	1480	}
Yann	0:f30e2135b0db	1481
Yann	0:f30e2135b0db	1482	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
Yann	0:f30e2135b0db	1483
Yann	0:f30e2135b0db	1484	return st;
Yann	0:f30e2135b0db	1485	}
Yann	0:f30e2135b0db	1486
Yann	0:f30e2135b0db	1487	/*
Yann	0:f30e2135b0db	1488	* cifdefaultroute - delete a default route through the address given.
Yann	0:f30e2135b0db	1489	*/
Yann	0:f30e2135b0db	1490	int
Yann	0:f30e2135b0db	1491	cifdefaultroute(int pd, u32_t l, u32_t g)
Yann	0:f30e2135b0db	1492	{
Yann	0:f30e2135b0db	1493	PPPControl *pc = &pppControl[pd];
Yann	0:f30e2135b0db	1494	int st = 1;
Yann	0:f30e2135b0db	1495
Yann	0:f30e2135b0db	1496	LWIP_UNUSED_ARG(l);
Yann	0:f30e2135b0db	1497	LWIP_UNUSED_ARG(g);
Yann	0:f30e2135b0db	1498
Yann	0:f30e2135b0db	1499	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
Yann	0:f30e2135b0db	1500	st = 0;
Yann	0:f30e2135b0db	1501	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
Yann	0:f30e2135b0db	1502	} else {
Yann	0:f30e2135b0db	1503	netif_set_default(NULL);
Yann	0:f30e2135b0db	1504	}
Yann	0:f30e2135b0db	1505
Yann	0:f30e2135b0db	1506	return st;
Yann	0:f30e2135b0db	1507	}
Yann	0:f30e2135b0db	1508
Yann	0:f30e2135b0db	1509	/**********************************/
Yann	0:f30e2135b0db	1510	/* LOCAL FUNCTION DEFINITIONS */
Yann	0:f30e2135b0db	1511	/**********************************/
Yann	0:f30e2135b0db	1512
Yann	0:f30e2135b0db	1513	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
Yann	0:f30e2135b0db	1514	/* The main PPP process function. This implements the state machine according
Yann	0:f30e2135b0db	1515	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
Yann	0:f30e2135b0db	1516	static void
Yann	0:f30e2135b0db	1517	pppInputThread(void *arg)
Yann	0:f30e2135b0db	1518	{
Yann	0:f30e2135b0db	1519	int count;
Yann	0:f30e2135b0db	1520	PPPControlRx *pcrx = arg;
Yann	0:f30e2135b0db	1521
Yann	0:f30e2135b0db	1522	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
Yann	0:f30e2135b0db	1523	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
Yann	0:f30e2135b0db	1524	if(count > 0) {
Yann	0:f30e2135b0db	1525	pppInProc(pcrx, pcrx->rxbuf, count);
Yann	0:f30e2135b0db	1526	} else {
Yann	0:f30e2135b0db	1527	/* nothing received, give other tasks a chance to run */
Yann	0:f30e2135b0db	1528	sys_msleep(1);
Yann	0:f30e2135b0db	1529	}
Yann	0:f30e2135b0db	1530	}
Yann	0:f30e2135b0db	1531	}
Yann	0:f30e2135b0db	1532	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
Yann	0:f30e2135b0db	1533
Yann	0:f30e2135b0db	1534	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	1535
Yann	0:f30e2135b0db	1536	void
Yann	0:f30e2135b0db	1537	pppOverEthernetInitFailed(int pd)
Yann	0:f30e2135b0db	1538	{
Yann	0:f30e2135b0db	1539	PPPControl* pc;
Yann	0:f30e2135b0db	1540
Yann	0:f30e2135b0db	1541	pppHup(pd);
Yann	0:f30e2135b0db	1542	pppStop(pd);
Yann	0:f30e2135b0db	1543
Yann	0:f30e2135b0db	1544	pc = &pppControl[pd];
Yann	0:f30e2135b0db	1545	pppoe_destroy(&pc->netif);
Yann	0:f30e2135b0db	1546	pc->openFlag = 0;
Yann	0:f30e2135b0db	1547
Yann	0:f30e2135b0db	1548	if(pc->linkStatusCB) {
Yann	0:f30e2135b0db	1549	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
Yann	0:f30e2135b0db	1550	}
Yann	0:f30e2135b0db	1551	}
Yann	0:f30e2135b0db	1552
Yann	0:f30e2135b0db	1553	static void
Yann	0:f30e2135b0db	1554	pppOverEthernetLinkStatusCB(int pd, int up)
Yann	0:f30e2135b0db	1555	{
Yann	0:f30e2135b0db	1556	if(up) {
Yann	0:f30e2135b0db	1557	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
Yann	0:f30e2135b0db	1558	pppStart(pd);
Yann	0:f30e2135b0db	1559	} else {
Yann	0:f30e2135b0db	1560	pppOverEthernetInitFailed(pd);
Yann	0:f30e2135b0db	1561	}
Yann	0:f30e2135b0db	1562	}
Yann	0:f30e2135b0db	1563	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	1564
Yann	0:f30e2135b0db	1565	struct pbuf *
Yann	0:f30e2135b0db	1566	pppSingleBuf(struct pbuf *p)
Yann	0:f30e2135b0db	1567	{
Yann	0:f30e2135b0db	1568	struct pbuf q, b;
Yann	0:f30e2135b0db	1569	u_char *pl;
Yann	0:f30e2135b0db	1570
Yann	0:f30e2135b0db	1571	if(p->tot_len == p->len) {
Yann	0:f30e2135b0db	1572	return p;
Yann	0:f30e2135b0db	1573	}
Yann	0:f30e2135b0db	1574
Yann	0:f30e2135b0db	1575	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
Yann	0:f30e2135b0db	1576	if(!q) {
Yann	0:f30e2135b0db	1577	PPPDEBUG(LOG_ERR,
Yann	0:f30e2135b0db	1578	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
Yann	0:f30e2135b0db	1579	return p; /* live dangerously */
Yann	0:f30e2135b0db	1580	}
Yann	0:f30e2135b0db	1581
Yann	0:f30e2135b0db	1582	for(b = p, pl = (u_char *) q->payload; b != NULL; b = b->next) {
Yann	0:f30e2135b0db	1583	MEMCPY(pl, b->payload, b->len);
Yann	0:f30e2135b0db	1584	pl += b->len;
Yann	0:f30e2135b0db	1585	}
Yann	0:f30e2135b0db	1586
Yann	0:f30e2135b0db	1587	pbuf_free(p);
Yann	0:f30e2135b0db	1588
Yann	0:f30e2135b0db	1589	return q;
Yann	0:f30e2135b0db	1590	}
Yann	0:f30e2135b0db	1591
Yann	0:f30e2135b0db	1592	struct pppInputHeader {
Yann	0:f30e2135b0db	1593	int unit;
Yann	0:f30e2135b0db	1594	u16_t proto;
Yann	0:f30e2135b0db	1595	};
Yann	0:f30e2135b0db	1596
Yann	0:f30e2135b0db	1597	/*
Yann	0:f30e2135b0db	1598	* Pass the processed input packet to the appropriate handler.
Yann	0:f30e2135b0db	1599	* This function and all handlers run in the context of the tcpip_thread
Yann	0:f30e2135b0db	1600	*/
Yann	0:f30e2135b0db	1601	static void
Yann	0:f30e2135b0db	1602	pppInput(void *arg)
Yann	0:f30e2135b0db	1603	{
Yann	0:f30e2135b0db	1604	struct pbuf nb = (struct pbuf )arg;
Yann	0:f30e2135b0db	1605	u16_t protocol;
Yann	0:f30e2135b0db	1606	int pd;
Yann	0:f30e2135b0db	1607
Yann	0:f30e2135b0db	1608	pd = ((struct pppInputHeader *)nb->payload)->unit;
Yann	0:f30e2135b0db	1609	protocol = ((struct pppInputHeader *)nb->payload)->proto;
Yann	0:f30e2135b0db	1610
Yann	0:f30e2135b0db	1611	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
Yann	0:f30e2135b0db	1612	LWIP_ASSERT("pbuf_header failed\n", 0);
Yann	0:f30e2135b0db	1613	goto drop;
Yann	0:f30e2135b0db	1614	}
Yann	0:f30e2135b0db	1615
Yann	0:f30e2135b0db	1616	LINK_STATS_INC(link.recv);
Yann	0:f30e2135b0db	1617	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
Yann	0:f30e2135b0db	1618	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
Yann	0:f30e2135b0db	1619
Yann	0:f30e2135b0db	1620	/*
Yann	0:f30e2135b0db	1621	* Toss all non-LCP packets unless LCP is OPEN.
Yann	0:f30e2135b0db	1622	* Until we get past the authentication phase, toss all packets
Yann	0:f30e2135b0db	1623	* except LCP, LQR and authentication packets.
Yann	0:f30e2135b0db	1624	*/
Yann	0:f30e2135b0db	1625	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
Yann	0:f30e2135b0db	1626	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
Yann	0:f30e2135b0db	1627	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
Yann	0:f30e2135b0db	1628	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
Yann	0:f30e2135b0db	1629	goto drop;
Yann	0:f30e2135b0db	1630	}
Yann	0:f30e2135b0db	1631	}
Yann	0:f30e2135b0db	1632
Yann	0:f30e2135b0db	1633	switch(protocol) {
Yann	0:f30e2135b0db	1634	case PPP_VJC_COMP: /* VJ compressed TCP */
Yann	0:f30e2135b0db	1635	#if PPPOS_SUPPORT && VJ_SUPPORT
Yann	0:f30e2135b0db	1636	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
Yann	0:f30e2135b0db	1637	/*
Yann	0:f30e2135b0db	1638	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
Yann	0:f30e2135b0db	1639	* pass the result to IP.
Yann	0:f30e2135b0db	1640	*/
Yann	0:f30e2135b0db	1641	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
Yann	0:f30e2135b0db	1642	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
Yann	0:f30e2135b0db	1643	return;
Yann	0:f30e2135b0db	1644	}
Yann	0:f30e2135b0db	1645	/* Something's wrong so drop it. */
Yann	0:f30e2135b0db	1646	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
Yann	0:f30e2135b0db	1647	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
Yann	0:f30e2135b0db	1648	/* No handler for this protocol so drop the packet. */
Yann	0:f30e2135b0db	1649	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
Yann	0:f30e2135b0db	1650	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
Yann	0:f30e2135b0db	1651	break;
Yann	0:f30e2135b0db	1652
Yann	0:f30e2135b0db	1653	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
Yann	0:f30e2135b0db	1654	#if PPPOS_SUPPORT && VJ_SUPPORT
Yann	0:f30e2135b0db	1655	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
Yann	0:f30e2135b0db	1656	/*
Yann	0:f30e2135b0db	1657	* Process the TCP/IP header for VJ header compression and then pass
Yann	0:f30e2135b0db	1658	* the packet to IP.
Yann	0:f30e2135b0db	1659	*/
Yann	0:f30e2135b0db	1660	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
Yann	0:f30e2135b0db	1661	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
Yann	0:f30e2135b0db	1662	return;
Yann	0:f30e2135b0db	1663	}
Yann	0:f30e2135b0db	1664	/* Something's wrong so drop it. */
Yann	0:f30e2135b0db	1665	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
Yann	0:f30e2135b0db	1666	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
Yann	0:f30e2135b0db	1667	/* No handler for this protocol so drop the packet. */
Yann	0:f30e2135b0db	1668	PPPDEBUG(LOG_INFO,
Yann	0:f30e2135b0db	1669	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
Yann	0:f30e2135b0db	1670	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
Yann	0:f30e2135b0db	1671	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
Yann	0:f30e2135b0db	1672	break;
Yann	0:f30e2135b0db	1673
Yann	0:f30e2135b0db	1674	case PPP_IP: /* Internet Protocol */
Yann	0:f30e2135b0db	1675	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
Yann	0:f30e2135b0db	1676	if (pppControl[pd].netif.input) {
Yann	0:f30e2135b0db	1677	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
Yann	0:f30e2135b0db	1678	return;
Yann	0:f30e2135b0db	1679	}
Yann	0:f30e2135b0db	1680	break;
Yann	0:f30e2135b0db	1681
Yann	0:f30e2135b0db	1682	default: {
Yann	0:f30e2135b0db	1683	struct protent *protp;
Yann	0:f30e2135b0db	1684	int i;
Yann	0:f30e2135b0db	1685
Yann	0:f30e2135b0db	1686	/*
Yann	0:f30e2135b0db	1687	* Upcall the proper protocol input routine.
Yann	0:f30e2135b0db	1688	*/
Yann	0:f30e2135b0db	1689	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
Yann	0:f30e2135b0db	1690	if (protp->protocol == protocol && protp->enabled_flag) {
Yann	0:f30e2135b0db	1691	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
Yann	0:f30e2135b0db	1692	nb = pppSingleBuf(nb);
Yann	0:f30e2135b0db	1693	(protp->input)(pd, (u_char )nb->payload, nb->len);
Yann	0:f30e2135b0db	1694	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
Yann	0:f30e2135b0db	1695	goto out;
Yann	0:f30e2135b0db	1696	}
Yann	0:f30e2135b0db	1697	}
Yann	0:f30e2135b0db	1698
Yann	0:f30e2135b0db	1699	/* No handler for this protocol so reject the packet. */
Yann	0:f30e2135b0db	1700	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
Yann	0:f30e2135b0db	1701	if (pbuf_header(nb, sizeof(protocol))) {
Yann	0:f30e2135b0db	1702	LWIP_ASSERT("pbuf_header failed\n", 0);
Yann	0:f30e2135b0db	1703	goto drop;
Yann	0:f30e2135b0db	1704	}
Yann	0:f30e2135b0db	1705	#if BYTE_ORDER == LITTLE_ENDIAN
Yann	0:f30e2135b0db	1706	protocol = htons(protocol);
Yann	0:f30e2135b0db	1707	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
Yann	0:f30e2135b0db	1708	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
Yann	0:f30e2135b0db	1709	lcp_sprotrej(pd, (u_char *)nb->payload, nb->len);
Yann	0:f30e2135b0db	1710	}
Yann	0:f30e2135b0db	1711	break;
Yann	0:f30e2135b0db	1712	}
Yann	0:f30e2135b0db	1713
Yann	0:f30e2135b0db	1714	drop:
Yann	0:f30e2135b0db	1715	LINK_STATS_INC(link.drop);
Yann	0:f30e2135b0db	1716	snmp_inc_ifindiscards(&pppControl[pd].netif);
Yann	0:f30e2135b0db	1717
Yann	0:f30e2135b0db	1718	out:
Yann	0:f30e2135b0db	1719	pbuf_free(nb);
Yann	0:f30e2135b0db	1720	return;
Yann	0:f30e2135b0db	1721	}
Yann	0:f30e2135b0db	1722
Yann	0:f30e2135b0db	1723	#if PPPOS_SUPPORT
Yann	0:f30e2135b0db	1724	/*
Yann	0:f30e2135b0db	1725	* Drop the input packet.
Yann	0:f30e2135b0db	1726	*/
Yann	0:f30e2135b0db	1727	static void
Yann	0:f30e2135b0db	1728	pppDrop(PPPControlRx *pcrx)
Yann	0:f30e2135b0db	1729	{
Yann	0:f30e2135b0db	1730	if (pcrx->inHead != NULL) {
Yann	0:f30e2135b0db	1731	#if 0
Yann	0:f30e2135b0db	1732	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
Yann	0:f30e2135b0db	1733	#endif
Yann	0:f30e2135b0db	1734	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
Yann	0:f30e2135b0db	1735	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
Yann	0:f30e2135b0db	1736	pbuf_free(pcrx->inTail);
Yann	0:f30e2135b0db	1737	}
Yann	0:f30e2135b0db	1738	pbuf_free(pcrx->inHead);
Yann	0:f30e2135b0db	1739	pcrx->inHead = NULL;
Yann	0:f30e2135b0db	1740	pcrx->inTail = NULL;
Yann	0:f30e2135b0db	1741	}
Yann	0:f30e2135b0db	1742	#if VJ_SUPPORT
Yann	0:f30e2135b0db	1743	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
Yann	0:f30e2135b0db	1744	#endif /* VJ_SUPPORT */
Yann	0:f30e2135b0db	1745
Yann	0:f30e2135b0db	1746	LINK_STATS_INC(link.drop);
Yann	0:f30e2135b0db	1747	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
Yann	0:f30e2135b0db	1748	}
Yann	0:f30e2135b0db	1749
Yann	0:f30e2135b0db	1750	/** Pass received raw characters to PPPoS to be decoded. This function is
Yann	0:f30e2135b0db	1751	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
Yann	0:f30e2135b0db	1752	*
Yann	0:f30e2135b0db	1753	* @param pd PPP descriptor index, returned by pppOpen()
Yann	0:f30e2135b0db	1754	* @param data received data
Yann	0:f30e2135b0db	1755	* @param len length of received data
Yann	0:f30e2135b0db	1756	*/
Yann	0:f30e2135b0db	1757	void
Yann	0:f30e2135b0db	1758	pppos_input(int pd, u_char* data, int len)
Yann	0:f30e2135b0db	1759	{
Yann	0:f30e2135b0db	1760	pppInProc(&pppControl[pd].rx, data, len);
Yann	0:f30e2135b0db	1761	}
Yann	0:f30e2135b0db	1762
Yann	0:f30e2135b0db	1763	/**
Yann	0:f30e2135b0db	1764	* Process a received octet string.
Yann	0:f30e2135b0db	1765	*/
Yann	0:f30e2135b0db	1766	static void
Yann	0:f30e2135b0db	1767	pppInProc(PPPControlRx pcrx, u_char s, int l)
Yann	0:f30e2135b0db	1768	{
Yann	0:f30e2135b0db	1769	struct pbuf *nextNBuf;
Yann	0:f30e2135b0db	1770	u_char curChar;
Yann	0:f30e2135b0db	1771	u_char escaped;
Yann	0:f30e2135b0db	1772	SYS_ARCH_DECL_PROTECT(lev);
Yann	0:f30e2135b0db	1773
Yann	0:f30e2135b0db	1774	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
Yann	0:f30e2135b0db	1775	while (l-- > 0) {
Yann	0:f30e2135b0db	1776	curChar = *s++;
Yann	0:f30e2135b0db	1777
Yann	0:f30e2135b0db	1778	SYS_ARCH_PROTECT(lev);
Yann	0:f30e2135b0db	1779	escaped = ESCAPE_P(pcrx->inACCM, curChar);
Yann	0:f30e2135b0db	1780	SYS_ARCH_UNPROTECT(lev);
Yann	0:f30e2135b0db	1781	/* Handle special characters. */
Yann	0:f30e2135b0db	1782	if (escaped) {
Yann	0:f30e2135b0db	1783	/* Check for escape sequences. */
Yann	0:f30e2135b0db	1784	/* XXX Note that this does not handle an escaped 0x5d character which
Yann	0:f30e2135b0db	1785	* would appear as an escape character. Since this is an ASCII ']'
Yann	0:f30e2135b0db	1786	* and there is no reason that I know of to escape it, I won't complicate
Yann	0:f30e2135b0db	1787	* the code to handle this case. GLL */
Yann	0:f30e2135b0db	1788	if (curChar == PPP_ESCAPE) {
Yann	0:f30e2135b0db	1789	pcrx->inEscaped = 1;
Yann	0:f30e2135b0db	1790	/* Check for the flag character. */
Yann	0:f30e2135b0db	1791	} else if (curChar == PPP_FLAG) {
Yann	0:f30e2135b0db	1792	/* If this is just an extra flag character, ignore it. */
Yann	0:f30e2135b0db	1793	if (pcrx->inState <= PDADDRESS) {
Yann	0:f30e2135b0db	1794	/* ignore it */;
Yann	0:f30e2135b0db	1795	/* If we haven't received the packet header, drop what has come in. */
Yann	0:f30e2135b0db	1796	} else if (pcrx->inState < PDDATA) {
Yann	0:f30e2135b0db	1797	PPPDEBUG(LOG_WARNING,
Yann	0:f30e2135b0db	1798	("pppInProc[%d]: Dropping incomplete packet %d\n",
Yann	0:f30e2135b0db	1799	pcrx->pd, pcrx->inState));
Yann	0:f30e2135b0db	1800	LINK_STATS_INC(link.lenerr);
Yann	0:f30e2135b0db	1801	pppDrop(pcrx);
Yann	0:f30e2135b0db	1802	/* If the fcs is invalid, drop the packet. */
Yann	0:f30e2135b0db	1803	} else if (pcrx->inFCS != PPP_GOODFCS) {
Yann	0:f30e2135b0db	1804	PPPDEBUG(LOG_INFO,
Yann	0:f30e2135b0db	1805	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
Yann	0:f30e2135b0db	1806	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
Yann	0:f30e2135b0db	1807	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
Yann	0:f30e2135b0db	1808	LINK_STATS_INC(link.chkerr);
Yann	0:f30e2135b0db	1809	pppDrop(pcrx);
Yann	0:f30e2135b0db	1810	/* Otherwise it's a good packet so pass it on. */
Yann	0:f30e2135b0db	1811	} else {
Yann	0:f30e2135b0db	1812	/* Trim off the checksum. */
Yann	0:f30e2135b0db	1813	if(pcrx->inTail->len >= 2) {
Yann	0:f30e2135b0db	1814	pcrx->inTail->len -= 2;
Yann	0:f30e2135b0db	1815
Yann	0:f30e2135b0db	1816	pcrx->inTail->tot_len = pcrx->inTail->len;
Yann	0:f30e2135b0db	1817	if (pcrx->inTail != pcrx->inHead) {
Yann	0:f30e2135b0db	1818	pbuf_cat(pcrx->inHead, pcrx->inTail);
Yann	0:f30e2135b0db	1819	}
Yann	0:f30e2135b0db	1820	} else {
Yann	0:f30e2135b0db	1821	pcrx->inTail->tot_len = pcrx->inTail->len;
Yann	0:f30e2135b0db	1822	if (pcrx->inTail != pcrx->inHead) {
Yann	0:f30e2135b0db	1823	pbuf_cat(pcrx->inHead, pcrx->inTail);
Yann	0:f30e2135b0db	1824	}
Yann	0:f30e2135b0db	1825
Yann	0:f30e2135b0db	1826	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
Yann	0:f30e2135b0db	1827	}
Yann	0:f30e2135b0db	1828
Yann	0:f30e2135b0db	1829	/* Dispatch the packet thereby consuming it. */
Yann	0:f30e2135b0db	1830	#if PPP_INPROC_MULTITHREADED
Yann	0:f30e2135b0db	1831	if(tcpip_callback_with_block(pppInput, pcrx->inHead, 0) != ERR_OK) {
Yann	0:f30e2135b0db	1832	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
Yann	0:f30e2135b0db	1833	pbuf_free(pcrx->inHead);
Yann	0:f30e2135b0db	1834	LINK_STATS_INC(link.drop);
Yann	0:f30e2135b0db	1835	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
Yann	0:f30e2135b0db	1836	}
Yann	0:f30e2135b0db	1837	#else /* PPP_INPROC_MULTITHREADED */
Yann	0:f30e2135b0db	1838	pppInput(pcrx->inHead);
Yann	0:f30e2135b0db	1839	#endif /* PPP_INPROC_MULTITHREADED */
Yann	0:f30e2135b0db	1840	pcrx->inHead = NULL;
Yann	0:f30e2135b0db	1841	pcrx->inTail = NULL;
Yann	0:f30e2135b0db	1842	}
Yann	0:f30e2135b0db	1843
Yann	0:f30e2135b0db	1844	/* Prepare for a new packet. */
Yann	0:f30e2135b0db	1845	pcrx->inFCS = PPP_INITFCS;
Yann	0:f30e2135b0db	1846	pcrx->inState = PDADDRESS;
Yann	0:f30e2135b0db	1847	pcrx->inEscaped = 0;
Yann	0:f30e2135b0db	1848	/* Other characters are usually control characters that may have
Yann	0:f30e2135b0db	1849	* been inserted by the physical layer so here we just drop them. */
Yann	0:f30e2135b0db	1850	} else {
Yann	0:f30e2135b0db	1851	PPPDEBUG(LOG_WARNING,
Yann	0:f30e2135b0db	1852	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
Yann	0:f30e2135b0db	1853	}
Yann	0:f30e2135b0db	1854	/* Process other characters. */
Yann	0:f30e2135b0db	1855	} else {
Yann	0:f30e2135b0db	1856	/* Unencode escaped characters. */
Yann	0:f30e2135b0db	1857	if (pcrx->inEscaped) {
Yann	0:f30e2135b0db	1858	pcrx->inEscaped = 0;
Yann	0:f30e2135b0db	1859	curChar ^= PPP_TRANS;
Yann	0:f30e2135b0db	1860	}
Yann	0:f30e2135b0db	1861
Yann	0:f30e2135b0db	1862	/* Process character relative to current state. */
Yann	0:f30e2135b0db	1863	switch(pcrx->inState) {
Yann	0:f30e2135b0db	1864	case PDIDLE: /* Idle state - waiting. */
Yann	0:f30e2135b0db	1865	/* Drop the character if it's not 0xff
Yann	0:f30e2135b0db	1866	* we would have processed a flag character above. */
Yann	0:f30e2135b0db	1867	if (curChar != PPP_ALLSTATIONS) {
Yann	0:f30e2135b0db	1868	break;
Yann	0:f30e2135b0db	1869	}
Yann	0:f30e2135b0db	1870
Yann	0:f30e2135b0db	1871	/* Fall through */
Yann	0:f30e2135b0db	1872	case PDSTART: /* Process start flag. */
Yann	0:f30e2135b0db	1873	/* Prepare for a new packet. */
Yann	0:f30e2135b0db	1874	pcrx->inFCS = PPP_INITFCS;
Yann	0:f30e2135b0db	1875
Yann	0:f30e2135b0db	1876	/* Fall through */
Yann	0:f30e2135b0db	1877	case PDADDRESS: /* Process address field. */
Yann	0:f30e2135b0db	1878	if (curChar == PPP_ALLSTATIONS) {
Yann	0:f30e2135b0db	1879	pcrx->inState = PDCONTROL;
Yann	0:f30e2135b0db	1880	break;
Yann	0:f30e2135b0db	1881	}
Yann	0:f30e2135b0db	1882	/* Else assume compressed address and control fields so
Yann	0:f30e2135b0db	1883	* fall through to get the protocol... */
Yann	0:f30e2135b0db	1884	case PDCONTROL: /* Process control field. */
Yann	0:f30e2135b0db	1885	/* If we don't get a valid control code, restart. */
Yann	0:f30e2135b0db	1886	if (curChar == PPP_UI) {
Yann	0:f30e2135b0db	1887	pcrx->inState = PDPROTOCOL1;
Yann	0:f30e2135b0db	1888	break;
Yann	0:f30e2135b0db	1889	}
Yann	0:f30e2135b0db	1890	#if 0
Yann	0:f30e2135b0db	1891	else {
Yann	0:f30e2135b0db	1892	PPPDEBUG(LOG_WARNING,
Yann	0:f30e2135b0db	1893	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
Yann	0:f30e2135b0db	1894	pcrx->inState = PDSTART;
Yann	0:f30e2135b0db	1895	}
Yann	0:f30e2135b0db	1896	#endif
Yann	0:f30e2135b0db	1897	case PDPROTOCOL1: /* Process protocol field 1. */
Yann	0:f30e2135b0db	1898	/* If the lower bit is set, this is the end of the protocol
Yann	0:f30e2135b0db	1899	* field. */
Yann	0:f30e2135b0db	1900	if (curChar & 1) {
Yann	0:f30e2135b0db	1901	pcrx->inProtocol = curChar;
Yann	0:f30e2135b0db	1902	pcrx->inState = PDDATA;
Yann	0:f30e2135b0db	1903	} else {
Yann	0:f30e2135b0db	1904	pcrx->inProtocol = (u_int)curChar << 8;
Yann	0:f30e2135b0db	1905	pcrx->inState = PDPROTOCOL2;
Yann	0:f30e2135b0db	1906	}
Yann	0:f30e2135b0db	1907	break;
Yann	0:f30e2135b0db	1908	case PDPROTOCOL2: /* Process protocol field 2. */
Yann	0:f30e2135b0db	1909	pcrx->inProtocol \|= curChar;
Yann	0:f30e2135b0db	1910	pcrx->inState = PDDATA;
Yann	0:f30e2135b0db	1911	break;
Yann	0:f30e2135b0db	1912	case PDDATA: /* Process data byte. */
Yann	0:f30e2135b0db	1913	/* Make space to receive processed data. */
Yann	0:f30e2135b0db	1914	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
Yann	0:f30e2135b0db	1915	if(pcrx->inTail) {
Yann	0:f30e2135b0db	1916	pcrx->inTail->tot_len = pcrx->inTail->len;
Yann	0:f30e2135b0db	1917	if (pcrx->inTail != pcrx->inHead) {
Yann	0:f30e2135b0db	1918	pbuf_cat(pcrx->inHead, pcrx->inTail);
Yann	0:f30e2135b0db	1919	}
Yann	0:f30e2135b0db	1920	}
Yann	0:f30e2135b0db	1921	/* If we haven't started a packet, we need a packet header. */
Yann	0:f30e2135b0db	1922	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
Yann	0:f30e2135b0db	1923	if (nextNBuf == NULL) {
Yann	0:f30e2135b0db	1924	/* No free buffers. Drop the input packet and let the
Yann	0:f30e2135b0db	1925	* higher layers deal with it. Continue processing
Yann	0:f30e2135b0db	1926	* the received pbuf chain in case a new packet starts. */
Yann	0:f30e2135b0db	1927	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
Yann	0:f30e2135b0db	1928	LINK_STATS_INC(link.memerr);
Yann	0:f30e2135b0db	1929	pppDrop(pcrx);
Yann	0:f30e2135b0db	1930	pcrx->inState = PDSTART; /* Wait for flag sequence. */
Yann	0:f30e2135b0db	1931	break;
Yann	0:f30e2135b0db	1932	}
Yann	0:f30e2135b0db	1933	if (pcrx->inHead == NULL) {
Yann	0:f30e2135b0db	1934	struct pppInputHeader pih = (struct pppInputHeader )nextNBuf->payload;
Yann	0:f30e2135b0db	1935
Yann	0:f30e2135b0db	1936	pih->unit = pcrx->pd;
Yann	0:f30e2135b0db	1937	pih->proto = pcrx->inProtocol;
Yann	0:f30e2135b0db	1938
Yann	0:f30e2135b0db	1939	nextNBuf->len += sizeof(*pih);
Yann	0:f30e2135b0db	1940
Yann	0:f30e2135b0db	1941	pcrx->inHead = nextNBuf;
Yann	0:f30e2135b0db	1942	}
Yann	0:f30e2135b0db	1943	pcrx->inTail = nextNBuf;
Yann	0:f30e2135b0db	1944	}
Yann	0:f30e2135b0db	1945	/* Load character into buffer. */
Yann	0:f30e2135b0db	1946	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
Yann	0:f30e2135b0db	1947	break;
Yann	0:f30e2135b0db	1948	}
Yann	0:f30e2135b0db	1949
Yann	0:f30e2135b0db	1950	/* update the frame check sequence number. */
Yann	0:f30e2135b0db	1951	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
Yann	0:f30e2135b0db	1952	}
Yann	0:f30e2135b0db	1953	} /* while (l-- > 0), all bytes processed */
Yann	0:f30e2135b0db	1954
Yann	0:f30e2135b0db	1955	avRandomize();
Yann	0:f30e2135b0db	1956	}
Yann	0:f30e2135b0db	1957	#endif /* PPPOS_SUPPORT */
Yann	0:f30e2135b0db	1958
Yann	0:f30e2135b0db	1959	#if PPPOE_SUPPORT
Yann	0:f30e2135b0db	1960	void
Yann	0:f30e2135b0db	1961	pppInProcOverEthernet(int pd, struct pbuf *pb)
Yann	0:f30e2135b0db	1962	{
Yann	0:f30e2135b0db	1963	struct pppInputHeader *pih;
Yann	0:f30e2135b0db	1964	u16_t inProtocol;
Yann	0:f30e2135b0db	1965
Yann	0:f30e2135b0db	1966	if(pb->len < sizeof(inProtocol)) {
Yann	0:f30e2135b0db	1967	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
Yann	0:f30e2135b0db	1968	goto drop;
Yann	0:f30e2135b0db	1969	}
Yann	0:f30e2135b0db	1970
Yann	0:f30e2135b0db	1971	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
Yann	0:f30e2135b0db	1972
Yann	0:f30e2135b0db	1973	/* make room for pppInputHeader - should not fail */
Yann	0:f30e2135b0db	1974	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
Yann	0:f30e2135b0db	1975	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
Yann	0:f30e2135b0db	1976	goto drop;
Yann	0:f30e2135b0db	1977	}
Yann	0:f30e2135b0db	1978
Yann	0:f30e2135b0db	1979	pih = pb->payload;
Yann	0:f30e2135b0db	1980
Yann	0:f30e2135b0db	1981	pih->unit = pd;
Yann	0:f30e2135b0db	1982	pih->proto = inProtocol;
Yann	0:f30e2135b0db	1983
Yann	0:f30e2135b0db	1984	/* Dispatch the packet thereby consuming it. */
Yann	0:f30e2135b0db	1985	pppInput(pb);
Yann	0:f30e2135b0db	1986	return;
Yann	0:f30e2135b0db	1987
Yann	0:f30e2135b0db	1988	drop:
Yann	0:f30e2135b0db	1989	LINK_STATS_INC(link.drop);
Yann	0:f30e2135b0db	1990	snmp_inc_ifindiscards(&pppControl[pd].netif);
Yann	0:f30e2135b0db	1991	pbuf_free(pb);
Yann	0:f30e2135b0db	1992	return;
Yann	0:f30e2135b0db	1993	}
Yann	0:f30e2135b0db	1994	#endif /* PPPOE_SUPPORT */
Yann	0:f30e2135b0db	1995
Yann	0:f30e2135b0db	1996	#if LWIP_NETIF_STATUS_CALLBACK
Yann	0:f30e2135b0db	1997	/** Set the status callback of a PPP's netif
Yann	0:f30e2135b0db	1998	*
Yann	0:f30e2135b0db	1999	* @param pd The PPP descriptor returned by pppOpen()
Yann	0:f30e2135b0db	2000	* @param status_callback pointer to the status callback function
Yann	0:f30e2135b0db	2001	*
Yann	0:f30e2135b0db	2002	* @see netif_set_status_callback
Yann	0:f30e2135b0db	2003	*/
Yann	0:f30e2135b0db	2004	void
Yann	0:f30e2135b0db	2005	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
Yann	0:f30e2135b0db	2006	{
Yann	0:f30e2135b0db	2007	netif_set_status_callback(&pppControl[pd].netif, status_callback);
Yann	0:f30e2135b0db	2008	}
Yann	0:f30e2135b0db	2009	#endif /* LWIP_NETIF_STATUS_CALLBACK */
Yann	0:f30e2135b0db	2010
Yann	0:f30e2135b0db	2011	#if LWIP_NETIF_LINK_CALLBACK
Yann	0:f30e2135b0db	2012	/** Set the link callback of a PPP's netif
Yann	0:f30e2135b0db	2013	*
Yann	0:f30e2135b0db	2014	* @param pd The PPP descriptor returned by pppOpen()
Yann	0:f30e2135b0db	2015	* @param link_callback pointer to the link callback function
Yann	0:f30e2135b0db	2016	*
Yann	0:f30e2135b0db	2017	* @see netif_set_link_callback
Yann	0:f30e2135b0db	2018	*/
Yann	0:f30e2135b0db	2019	void
Yann	0:f30e2135b0db	2020	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
Yann	0:f30e2135b0db	2021	{
Yann	0:f30e2135b0db	2022	netif_set_link_callback(&pppControl[pd].netif, link_callback);
Yann	0:f30e2135b0db	2023	}
Yann	0:f30e2135b0db	2024	#endif /* LWIP_NETIF_LINK_CALLBACK */
Yann	0:f30e2135b0db	2025
Yann	0:f30e2135b0db	2026	#endif /* PPP_SUPPORT */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	09 Feb 2011
Imports:	33
Forks:	0
Commits:	2
Dependents:	0
Dependencies:	3
Followers:	1

NetServices/lwip/netif/ppp/ppp.c@0:f30e2135b0db, 2011-02-09 (annotated)

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