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lwip/netif/ppp/ppp.c@0:d616ece2d859, 2010-09-18 (annotated)

Committer:: mbed714
Date:: Sat Sep 18 23:05:49 2010 +0000
Revision:: 0:d616ece2d859

Who changed what in which revision?

User	Revision	Line number	New contents of line
mbed714	0:d616ece2d859	1	/*****************************************************************************
mbed714	0:d616ece2d859	2	* ppp.c - Network Point to Point Protocol program file.
mbed714	0:d616ece2d859	3	*
mbed714	0:d616ece2d859	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
mbed714	0:d616ece2d859	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
mbed714	0:d616ece2d859	6	*
mbed714	0:d616ece2d859	7	* The authors hereby grant permission to use, copy, modify, distribute,
mbed714	0:d616ece2d859	8	* and license this software and its documentation for any purpose, provided
mbed714	0:d616ece2d859	9	* that existing copyright notices are retained in all copies and that this
mbed714	0:d616ece2d859	10	* notice and the following disclaimer are included verbatim in any
mbed714	0:d616ece2d859	11	* distributions. No written agreement, license, or royalty fee is required
mbed714	0:d616ece2d859	12	* for any of the authorized uses.
mbed714	0:d616ece2d859	13	*
mbed714	0:d616ece2d859	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
mbed714	0:d616ece2d859	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
mbed714	0:d616ece2d859	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
mbed714	0:d616ece2d859	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
mbed714	0:d616ece2d859	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
mbed714	0:d616ece2d859	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
mbed714	0:d616ece2d859	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
mbed714	0:d616ece2d859	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
mbed714	0:d616ece2d859	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
mbed714	0:d616ece2d859	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed714	0:d616ece2d859	24	*
mbed714	0:d616ece2d859	25	******************************************************************************
mbed714	0:d616ece2d859	26	* REVISION HISTORY
mbed714	0:d616ece2d859	27	*
mbed714	0:d616ece2d859	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
mbed714	0:d616ece2d859	29	* Ported to lwIP.
mbed714	0:d616ece2d859	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
mbed714	0:d616ece2d859	31	* Original.
mbed714	0:d616ece2d859	32	*****************************************************************************/
mbed714	0:d616ece2d859	33
mbed714	0:d616ece2d859	34	/*
mbed714	0:d616ece2d859	35	* ppp_defs.h - PPP definitions.
mbed714	0:d616ece2d859	36	*
mbed714	0:d616ece2d859	37	* if_pppvar.h - private structures and declarations for PPP.
mbed714	0:d616ece2d859	38	*
mbed714	0:d616ece2d859	39	* Copyright (c) 1994 The Australian National University.
mbed714	0:d616ece2d859	40	* All rights reserved.
mbed714	0:d616ece2d859	41	*
mbed714	0:d616ece2d859	42	* Permission to use, copy, modify, and distribute this software and its
mbed714	0:d616ece2d859	43	* documentation is hereby granted, provided that the above copyright
mbed714	0:d616ece2d859	44	* notice appears in all copies. This software is provided without any
mbed714	0:d616ece2d859	45	* warranty, express or implied. The Australian National University
mbed714	0:d616ece2d859	46	* makes no representations about the suitability of this software for
mbed714	0:d616ece2d859	47	* any purpose.
mbed714	0:d616ece2d859	48	*
mbed714	0:d616ece2d859	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
mbed714	0:d616ece2d859	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
mbed714	0:d616ece2d859	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
mbed714	0:d616ece2d859	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
mbed714	0:d616ece2d859	53	* OF SUCH DAMAGE.
mbed714	0:d616ece2d859	54	*
mbed714	0:d616ece2d859	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
mbed714	0:d616ece2d859	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
mbed714	0:d616ece2d859	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
mbed714	0:d616ece2d859	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
mbed714	0:d616ece2d859	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
mbed714	0:d616ece2d859	60	* OR MODIFICATIONS.
mbed714	0:d616ece2d859	61	*/
mbed714	0:d616ece2d859	62
mbed714	0:d616ece2d859	63	/*
mbed714	0:d616ece2d859	64	* if_ppp.h - Point-to-Point Protocol definitions.
mbed714	0:d616ece2d859	65	*
mbed714	0:d616ece2d859	66	* Copyright (c) 1989 Carnegie Mellon University.
mbed714	0:d616ece2d859	67	* All rights reserved.
mbed714	0:d616ece2d859	68	*
mbed714	0:d616ece2d859	69	* Redistribution and use in source and binary forms are permitted
mbed714	0:d616ece2d859	70	* provided that the above copyright notice and this paragraph are
mbed714	0:d616ece2d859	71	* duplicated in all such forms and that any documentation,
mbed714	0:d616ece2d859	72	* advertising materials, and other materials related to such
mbed714	0:d616ece2d859	73	* distribution and use acknowledge that the software was developed
mbed714	0:d616ece2d859	74	* by Carnegie Mellon University. The name of the
mbed714	0:d616ece2d859	75	* University may not be used to endorse or promote products derived
mbed714	0:d616ece2d859	76	* from this software without specific prior written permission.
mbed714	0:d616ece2d859	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
mbed714	0:d616ece2d859	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
mbed714	0:d616ece2d859	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
mbed714	0:d616ece2d859	80	*/
mbed714	0:d616ece2d859	81
mbed714	0:d616ece2d859	82	#include "lwip/opt.h"
mbed714	0:d616ece2d859	83
mbed714	0:d616ece2d859	84	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
mbed714	0:d616ece2d859	85
mbed714	0:d616ece2d859	86	#include "lwip/ip.h" /* for ip_input() */
mbed714	0:d616ece2d859	87
mbed714	0:d616ece2d859	88	#include "ppp.h"
mbed714	0:d616ece2d859	89	#include "pppdebug.h"
mbed714	0:d616ece2d859	90
mbed714	0:d616ece2d859	91	#include "randm.h"
mbed714	0:d616ece2d859	92	#include "fsm.h"
mbed714	0:d616ece2d859	93	#if PAP_SUPPORT
mbed714	0:d616ece2d859	94	#include "pap.h"
mbed714	0:d616ece2d859	95	#endif /* PAP_SUPPORT */
mbed714	0:d616ece2d859	96	#if CHAP_SUPPORT
mbed714	0:d616ece2d859	97	#include "chap.h"
mbed714	0:d616ece2d859	98	#endif /* CHAP_SUPPORT */
mbed714	0:d616ece2d859	99	#include "ipcp.h"
mbed714	0:d616ece2d859	100	#include "lcp.h"
mbed714	0:d616ece2d859	101	#include "magic.h"
mbed714	0:d616ece2d859	102	#include "auth.h"
mbed714	0:d616ece2d859	103	#if VJ_SUPPORT
mbed714	0:d616ece2d859	104	#include "vj.h"
mbed714	0:d616ece2d859	105	#endif /* VJ_SUPPORT */
mbed714	0:d616ece2d859	106	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	107	#include "netif/ppp_oe.h"
mbed714	0:d616ece2d859	108	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	109
mbed714	0:d616ece2d859	110	#include "lwip/tcpip.h"
mbed714	0:d616ece2d859	111	#include "lwip/api.h"
mbed714	0:d616ece2d859	112	#include "lwip/snmp.h"
mbed714	0:d616ece2d859	113
mbed714	0:d616ece2d859	114	#include <string.h>
mbed714	0:d616ece2d859	115
mbed714	0:d616ece2d859	116	/*************************/
mbed714	0:d616ece2d859	117	/* LOCAL DEFINITIONS */
mbed714	0:d616ece2d859	118	/*************************/
mbed714	0:d616ece2d859	119
mbed714	0:d616ece2d859	120	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
mbed714	0:d616ece2d859	121	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
mbed714	0:d616ece2d859	122	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
mbed714	0:d616ece2d859	123	*/
mbed714	0:d616ece2d859	124	#ifndef PPP_INPROC_MULTITHREADED
mbed714	0:d616ece2d859	125	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
mbed714	0:d616ece2d859	126	#endif
mbed714	0:d616ece2d859	127
mbed714	0:d616ece2d859	128	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
mbed714	0:d616ece2d859	129	* Default is 0: call pppos_input() for received raw characters, charcater
mbed714	0:d616ece2d859	130	* reception is up to the port */
mbed714	0:d616ece2d859	131	#ifndef PPP_INPROC_OWNTHREAD
mbed714	0:d616ece2d859	132	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
mbed714	0:d616ece2d859	133	#endif
mbed714	0:d616ece2d859	134
mbed714	0:d616ece2d859	135	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
mbed714	0:d616ece2d859	136	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
mbed714	0:d616ece2d859	137	#endif
mbed714	0:d616ece2d859	138
mbed714	0:d616ece2d859	139	/*
mbed714	0:d616ece2d859	140	* The basic PPP frame.
mbed714	0:d616ece2d859	141	*/
mbed714	0:d616ece2d859	142	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
mbed714	0:d616ece2d859	143	#define PPP_CONTROL(p) (((u_char *)(p))[1])
mbed714	0:d616ece2d859	144	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
mbed714	0:d616ece2d859	145
mbed714	0:d616ece2d859	146	/* PPP packet parser states. Current state indicates operation yet to be
mbed714	0:d616ece2d859	147	* completed. */
mbed714	0:d616ece2d859	148	typedef enum {
mbed714	0:d616ece2d859	149	PDIDLE = 0, /* Idle state - waiting. */
mbed714	0:d616ece2d859	150	PDSTART, /* Process start flag. */
mbed714	0:d616ece2d859	151	PDADDRESS, /* Process address field. */
mbed714	0:d616ece2d859	152	PDCONTROL, /* Process control field. */
mbed714	0:d616ece2d859	153	PDPROTOCOL1, /* Process protocol field 1. */
mbed714	0:d616ece2d859	154	PDPROTOCOL2, /* Process protocol field 2. */
mbed714	0:d616ece2d859	155	PDDATA /* Process data byte. */
mbed714	0:d616ece2d859	156	} PPPDevStates;
mbed714	0:d616ece2d859	157
mbed714	0:d616ece2d859	158	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
mbed714	0:d616ece2d859	159
mbed714	0:d616ece2d859	160	/************************/
mbed714	0:d616ece2d859	161	/* LOCAL DATA TYPES */
mbed714	0:d616ece2d859	162	/************************/
mbed714	0:d616ece2d859	163
mbed714	0:d616ece2d859	164	/** RX buffer size: this may be configured smaller! */
mbed714	0:d616ece2d859	165	#ifndef PPPOS_RX_BUFSIZE
mbed714	0:d616ece2d859	166	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
mbed714	0:d616ece2d859	167	#endif
mbed714	0:d616ece2d859	168
mbed714	0:d616ece2d859	169	typedef struct PPPControlRx_s {
mbed714	0:d616ece2d859	170	/** unit number / ppp descriptor */
mbed714	0:d616ece2d859	171	int pd;
mbed714	0:d616ece2d859	172	/** the rx file descriptor */
mbed714	0:d616ece2d859	173	sio_fd_t fd;
mbed714	0:d616ece2d859	174	/** receive buffer - encoded data is stored here */
mbed714	0:d616ece2d859	175	u_char rxbuf[PPPOS_RX_BUFSIZE];
mbed714	0:d616ece2d859	176
mbed714	0:d616ece2d859	177	/* The input packet. */
mbed714	0:d616ece2d859	178	struct pbuf inHead, inTail;
mbed714	0:d616ece2d859	179
mbed714	0:d616ece2d859	180	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	181	u16_t inProtocol; /* The input protocol code. */
mbed714	0:d616ece2d859	182	u16_t inFCS; /* Input Frame Check Sequence value. */
mbed714	0:d616ece2d859	183	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	184	PPPDevStates inState; /* The input process state. */
mbed714	0:d616ece2d859	185	char inEscaped; /* Escape next character. */
mbed714	0:d616ece2d859	186	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
mbed714	0:d616ece2d859	187	} PPPControlRx;
mbed714	0:d616ece2d859	188
mbed714	0:d616ece2d859	189	/*
mbed714	0:d616ece2d859	190	* PPP interface control block.
mbed714	0:d616ece2d859	191	*/
mbed714	0:d616ece2d859	192	typedef struct PPPControl_s {
mbed714	0:d616ece2d859	193	PPPControlRx rx;
mbed714	0:d616ece2d859	194	char openFlag; /* True when in use. */
mbed714	0:d616ece2d859	195	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	196	struct netif *ethif;
mbed714	0:d616ece2d859	197	struct pppoe_softc *pppoe_sc;
mbed714	0:d616ece2d859	198	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	199	int if_up; /* True when the interface is up. */
mbed714	0:d616ece2d859	200	int errCode; /* Code indicating why interface is down. */
mbed714	0:d616ece2d859	201	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	202	sio_fd_t fd; /* File device ID of port. */
mbed714	0:d616ece2d859	203	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	204	u16_t mtu; /* Peer's mru */
mbed714	0:d616ece2d859	205	int pcomp; /* Does peer accept protocol compression? */
mbed714	0:d616ece2d859	206	int accomp; /* Does peer accept addr/ctl compression? */
mbed714	0:d616ece2d859	207	u_long lastXMit; /* Time of last transmission. */
mbed714	0:d616ece2d859	208	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
mbed714	0:d616ece2d859	209	#if PPPOS_SUPPORT && VJ_SUPPORT
mbed714	0:d616ece2d859	210	int vjEnabled; /* Flag indicating VJ compression enabled. */
mbed714	0:d616ece2d859	211	struct vjcompress vjComp; /* Van Jacobson compression header. */
mbed714	0:d616ece2d859	212	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed714	0:d616ece2d859	213
mbed714	0:d616ece2d859	214	struct netif netif;
mbed714	0:d616ece2d859	215
mbed714	0:d616ece2d859	216	struct ppp_addrs addrs;
mbed714	0:d616ece2d859	217
mbed714	0:d616ece2d859	218	void (linkStatusCB)(void ctx, int errCode, void *arg);
mbed714	0:d616ece2d859	219	void *linkStatusCtx;
mbed714	0:d616ece2d859	220
mbed714	0:d616ece2d859	221	} PPPControl;
mbed714	0:d616ece2d859	222
mbed714	0:d616ece2d859	223
mbed714	0:d616ece2d859	224	/*
mbed714	0:d616ece2d859	225	* Ioctl definitions.
mbed714	0:d616ece2d859	226	*/
mbed714	0:d616ece2d859	227
mbed714	0:d616ece2d859	228	struct npioctl {
mbed714	0:d616ece2d859	229	int protocol; /* PPP procotol, e.g. PPP_IP */
mbed714	0:d616ece2d859	230	enum NPmode mode;
mbed714	0:d616ece2d859	231	};
mbed714	0:d616ece2d859	232
mbed714	0:d616ece2d859	233
mbed714	0:d616ece2d859	234
mbed714	0:d616ece2d859	235	/***********************************/
mbed714	0:d616ece2d859	236	/* LOCAL FUNCTION DECLARATIONS */
mbed714	0:d616ece2d859	237	/***********************************/
mbed714	0:d616ece2d859	238	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	239	#if PPP_INPROC_OWNTHREAD
mbed714	0:d616ece2d859	240	static void pppInputThread(void *arg);
mbed714	0:d616ece2d859	241	#endif /* PPP_INPROC_OWNTHREAD */
mbed714	0:d616ece2d859	242	static void pppDrop(PPPControlRx *pcrx);
mbed714	0:d616ece2d859	243	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
mbed714	0:d616ece2d859	244	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	245
mbed714	0:d616ece2d859	246
mbed714	0:d616ece2d859	247	/******************************/
mbed714	0:d616ece2d859	248	/* PUBLIC DATA STRUCTURES */
mbed714	0:d616ece2d859	249	/******************************/
mbed714	0:d616ece2d859	250	u_long subnetMask;
mbed714	0:d616ece2d859	251
mbed714	0:d616ece2d859	252	static PPPControl pppControl[NUM_PPP] MEM_POSITION; /* The PPP interface control blocks. */
mbed714	0:d616ece2d859	253
mbed714	0:d616ece2d859	254	/*
mbed714	0:d616ece2d859	255	* PPP Data Link Layer "protocol" table.
mbed714	0:d616ece2d859	256	* One entry per supported protocol.
mbed714	0:d616ece2d859	257	* The last entry must be NULL.
mbed714	0:d616ece2d859	258	*/
mbed714	0:d616ece2d859	259	struct protent *ppp_protocols[] = {
mbed714	0:d616ece2d859	260	&lcp_protent,
mbed714	0:d616ece2d859	261	#if PAP_SUPPORT
mbed714	0:d616ece2d859	262	&pap_protent,
mbed714	0:d616ece2d859	263	#endif /* PAP_SUPPORT */
mbed714	0:d616ece2d859	264	#if CHAP_SUPPORT
mbed714	0:d616ece2d859	265	&chap_protent,
mbed714	0:d616ece2d859	266	#endif /* CHAP_SUPPORT */
mbed714	0:d616ece2d859	267	#if CBCP_SUPPORT
mbed714	0:d616ece2d859	268	&cbcp_protent,
mbed714	0:d616ece2d859	269	#endif /* CBCP_SUPPORT */
mbed714	0:d616ece2d859	270	&ipcp_protent,
mbed714	0:d616ece2d859	271	#if CCP_SUPPORT
mbed714	0:d616ece2d859	272	&ccp_protent,
mbed714	0:d616ece2d859	273	#endif /* CCP_SUPPORT */
mbed714	0:d616ece2d859	274	NULL
mbed714	0:d616ece2d859	275	};
mbed714	0:d616ece2d859	276
mbed714	0:d616ece2d859	277
mbed714	0:d616ece2d859	278	/*
mbed714	0:d616ece2d859	279	* Buffers for outgoing packets. This must be accessed only from the appropriate
mbed714	0:d616ece2d859	280	* PPP task so that it doesn't need to be protected to avoid collisions.
mbed714	0:d616ece2d859	281	*/
mbed714	0:d616ece2d859	282	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] MEM_POSITION;
mbed714	0:d616ece2d859	283
mbed714	0:d616ece2d859	284
mbed714	0:d616ece2d859	285	/*****************************/
mbed714	0:d616ece2d859	286	/* LOCAL DATA STRUCTURES */
mbed714	0:d616ece2d859	287	/*****************************/
mbed714	0:d616ece2d859	288
mbed714	0:d616ece2d859	289	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	290	/*
mbed714	0:d616ece2d859	291	* FCS lookup table as calculated by genfcstab.
mbed714	0:d616ece2d859	292	* @todo: smaller, slower implementation for lower memory footprint?
mbed714	0:d616ece2d859	293	*/
mbed714	0:d616ece2d859	294	static const u_short fcstab[256] = {
mbed714	0:d616ece2d859	295	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
mbed714	0:d616ece2d859	296	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
mbed714	0:d616ece2d859	297	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
mbed714	0:d616ece2d859	298	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
mbed714	0:d616ece2d859	299	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
mbed714	0:d616ece2d859	300	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
mbed714	0:d616ece2d859	301	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
mbed714	0:d616ece2d859	302	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
mbed714	0:d616ece2d859	303	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
mbed714	0:d616ece2d859	304	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
mbed714	0:d616ece2d859	305	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
mbed714	0:d616ece2d859	306	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
mbed714	0:d616ece2d859	307	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
mbed714	0:d616ece2d859	308	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
mbed714	0:d616ece2d859	309	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
mbed714	0:d616ece2d859	310	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
mbed714	0:d616ece2d859	311	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
mbed714	0:d616ece2d859	312	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
mbed714	0:d616ece2d859	313	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
mbed714	0:d616ece2d859	314	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
mbed714	0:d616ece2d859	315	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
mbed714	0:d616ece2d859	316	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
mbed714	0:d616ece2d859	317	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
mbed714	0:d616ece2d859	318	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
mbed714	0:d616ece2d859	319	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
mbed714	0:d616ece2d859	320	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
mbed714	0:d616ece2d859	321	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
mbed714	0:d616ece2d859	322	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
mbed714	0:d616ece2d859	323	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
mbed714	0:d616ece2d859	324	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
mbed714	0:d616ece2d859	325	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
mbed714	0:d616ece2d859	326	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
mbed714	0:d616ece2d859	327	};
mbed714	0:d616ece2d859	328
mbed714	0:d616ece2d859	329	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
mbed714	0:d616ece2d859	330	* to select the specific bit for a character. */
mbed714	0:d616ece2d859	331	static u_char pppACCMMask[] = {
mbed714	0:d616ece2d859	332	0x01,
mbed714	0:d616ece2d859	333	0x02,
mbed714	0:d616ece2d859	334	0x04,
mbed714	0:d616ece2d859	335	0x08,
mbed714	0:d616ece2d859	336	0x10,
mbed714	0:d616ece2d859	337	0x20,
mbed714	0:d616ece2d859	338	0x40,
mbed714	0:d616ece2d859	339	0x80
mbed714	0:d616ece2d859	340	};
mbed714	0:d616ece2d859	341
mbed714	0:d616ece2d859	342	/** Wake up the task blocked in reading from serial line (if any) */
mbed714	0:d616ece2d859	343	static void
mbed714	0:d616ece2d859	344	pppRecvWakeup(int pd)
mbed714	0:d616ece2d859	345	{
mbed714	0:d616ece2d859	346	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
mbed714	0:d616ece2d859	347	sio_read_abort(pppControl[pd].fd);
mbed714	0:d616ece2d859	348	}
mbed714	0:d616ece2d859	349	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	350
mbed714	0:d616ece2d859	351	void
mbed714	0:d616ece2d859	352	pppLinkTerminated(int pd)
mbed714	0:d616ece2d859	353	{
mbed714	0:d616ece2d859	354	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
mbed714	0:d616ece2d859	355
mbed714	0:d616ece2d859	356	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	357	if (pppControl[pd].ethif) {
mbed714	0:d616ece2d859	358	pppoe_disconnect(pppControl[pd].pppoe_sc);
mbed714	0:d616ece2d859	359	} else
mbed714	0:d616ece2d859	360	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	361	{
mbed714	0:d616ece2d859	362	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	363	PPPControl* pc;
mbed714	0:d616ece2d859	364	pppRecvWakeup(pd);
mbed714	0:d616ece2d859	365	pc = &pppControl[pd];
mbed714	0:d616ece2d859	366	pppDrop(&pc->rx); /* bug fix #17726 */
mbed714	0:d616ece2d859	367
mbed714	0:d616ece2d859	368	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
mbed714	0:d616ece2d859	369	if (pc->linkStatusCB) {
mbed714	0:d616ece2d859	370	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
mbed714	0:d616ece2d859	371	}
mbed714	0:d616ece2d859	372
mbed714	0:d616ece2d859	373	pc->openFlag = 0;/**/
mbed714	0:d616ece2d859	374	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	375	}
mbed714	0:d616ece2d859	376	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
mbed714	0:d616ece2d859	377	}
mbed714	0:d616ece2d859	378
mbed714	0:d616ece2d859	379	void
mbed714	0:d616ece2d859	380	pppLinkDown(int pd)
mbed714	0:d616ece2d859	381	{
mbed714	0:d616ece2d859	382	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
mbed714	0:d616ece2d859	383
mbed714	0:d616ece2d859	384	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	385	if (pppControl[pd].ethif) {
mbed714	0:d616ece2d859	386	pppoe_disconnect(pppControl[pd].pppoe_sc);
mbed714	0:d616ece2d859	387	} else
mbed714	0:d616ece2d859	388	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	389	{
mbed714	0:d616ece2d859	390	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	391	pppRecvWakeup(pd);
mbed714	0:d616ece2d859	392	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	393	}
mbed714	0:d616ece2d859	394	}
mbed714	0:d616ece2d859	395
mbed714	0:d616ece2d859	396	/** Initiate LCP open request */
mbed714	0:d616ece2d859	397	static void
mbed714	0:d616ece2d859	398	pppStart(int pd)
mbed714	0:d616ece2d859	399	{
mbed714	0:d616ece2d859	400	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
mbed714	0:d616ece2d859	401	lcp_lowerup(pd);
mbed714	0:d616ece2d859	402	lcp_open(pd); /* Start protocol */
mbed714	0:d616ece2d859	403	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
mbed714	0:d616ece2d859	404	}
mbed714	0:d616ece2d859	405
mbed714	0:d616ece2d859	406	/** LCP close request */
mbed714	0:d616ece2d859	407	static void
mbed714	0:d616ece2d859	408	pppStop(int pd)
mbed714	0:d616ece2d859	409	{
mbed714	0:d616ece2d859	410	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
mbed714	0:d616ece2d859	411	lcp_close(pd, "User request");
mbed714	0:d616ece2d859	412	}
mbed714	0:d616ece2d859	413
mbed714	0:d616ece2d859	414	/** Called when carrier/link is lost */
mbed714	0:d616ece2d859	415	static void
mbed714	0:d616ece2d859	416	pppHup(int pd)
mbed714	0:d616ece2d859	417	{
mbed714	0:d616ece2d859	418	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
mbed714	0:d616ece2d859	419	lcp_lowerdown(pd);
mbed714	0:d616ece2d859	420	link_terminated(pd);
mbed714	0:d616ece2d859	421	}
mbed714	0:d616ece2d859	422
mbed714	0:d616ece2d859	423	/***********************************/
mbed714	0:d616ece2d859	424	/* PUBLIC FUNCTION DEFINITIONS */
mbed714	0:d616ece2d859	425	/***********************************/
mbed714	0:d616ece2d859	426	/* Initialize the PPP subsystem. */
mbed714	0:d616ece2d859	427
mbed714	0:d616ece2d859	428	struct ppp_settings ppp_settings;
mbed714	0:d616ece2d859	429
mbed714	0:d616ece2d859	430	void
mbed714	0:d616ece2d859	431	pppInit(void)
mbed714	0:d616ece2d859	432	{
mbed714	0:d616ece2d859	433	struct protent *protp;
mbed714	0:d616ece2d859	434	int i, j;
mbed714	0:d616ece2d859	435
mbed714	0:d616ece2d859	436	memset(&ppp_settings, 0, sizeof(ppp_settings));
mbed714	0:d616ece2d859	437	ppp_settings.usepeerdns = 1;
mbed714	0:d616ece2d859	438	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
mbed714	0:d616ece2d859	439
mbed714	0:d616ece2d859	440	magicInit();
mbed714	0:d616ece2d859	441
mbed714	0:d616ece2d859	442	subnetMask = PP_HTONL(0xffffff00);
mbed714	0:d616ece2d859	443
mbed714	0:d616ece2d859	444	for (i = 0; i < NUM_PPP; i++) {
mbed714	0:d616ece2d859	445	/* Initialize each protocol to the standard option set. */
mbed714	0:d616ece2d859	446	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
mbed714	0:d616ece2d859	447	(*protp->init)(i);
mbed714	0:d616ece2d859	448	}
mbed714	0:d616ece2d859	449	}
mbed714	0:d616ece2d859	450	}
mbed714	0:d616ece2d859	451
mbed714	0:d616ece2d859	452	void
mbed714	0:d616ece2d859	453	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
mbed714	0:d616ece2d859	454	{
mbed714	0:d616ece2d859	455	switch(authType) {
mbed714	0:d616ece2d859	456	case PPPAUTHTYPE_NONE:
mbed714	0:d616ece2d859	457	default:
mbed714	0:d616ece2d859	458	#ifdef LWIP_PPP_STRICT_PAP_REJECT
mbed714	0:d616ece2d859	459	ppp_settings.refuse_pap = 1;
mbed714	0:d616ece2d859	460	#else /* LWIP_PPP_STRICT_PAP_REJECT */
mbed714	0:d616ece2d859	461	/* some providers request pap and accept an empty login/pw */
mbed714	0:d616ece2d859	462	ppp_settings.refuse_pap = 0;
mbed714	0:d616ece2d859	463	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
mbed714	0:d616ece2d859	464	ppp_settings.refuse_chap = 1;
mbed714	0:d616ece2d859	465	break;
mbed714	0:d616ece2d859	466
mbed714	0:d616ece2d859	467	case PPPAUTHTYPE_ANY:
mbed714	0:d616ece2d859	468	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
mbed714	0:d616ece2d859	469	* RFC 1994 says:
mbed714	0:d616ece2d859	470	*
mbed714	0:d616ece2d859	471	* In practice, within or associated with each PPP server, there is a
mbed714	0:d616ece2d859	472	* database which associates "user" names with authentication
mbed714	0:d616ece2d859	473	* information ("secrets"). It is not anticipated that a particular
mbed714	0:d616ece2d859	474	* named user would be authenticated by multiple methods. This would
mbed714	0:d616ece2d859	475	* make the user vulnerable to attacks which negotiate the least secure
mbed714	0:d616ece2d859	476	* method from among a set (such as PAP rather than CHAP). If the same
mbed714	0:d616ece2d859	477	* secret was used, PAP would reveal the secret to be used later with
mbed714	0:d616ece2d859	478	* CHAP.
mbed714	0:d616ece2d859	479	*
mbed714	0:d616ece2d859	480	* Instead, for each user name there should be an indication of exactly
mbed714	0:d616ece2d859	481	* one method used to authenticate that user name. If a user needs to
mbed714	0:d616ece2d859	482	* make use of different authentication methods under different
mbed714	0:d616ece2d859	483	* circumstances, then distinct user names SHOULD be employed, each of
mbed714	0:d616ece2d859	484	* which identifies exactly one authentication method.
mbed714	0:d616ece2d859	485	*
mbed714	0:d616ece2d859	486	*/
mbed714	0:d616ece2d859	487	ppp_settings.refuse_pap = 0;
mbed714	0:d616ece2d859	488	ppp_settings.refuse_chap = 0;
mbed714	0:d616ece2d859	489	break;
mbed714	0:d616ece2d859	490
mbed714	0:d616ece2d859	491	case PPPAUTHTYPE_PAP:
mbed714	0:d616ece2d859	492	ppp_settings.refuse_pap = 0;
mbed714	0:d616ece2d859	493	ppp_settings.refuse_chap = 1;
mbed714	0:d616ece2d859	494	break;
mbed714	0:d616ece2d859	495
mbed714	0:d616ece2d859	496	case PPPAUTHTYPE_CHAP:
mbed714	0:d616ece2d859	497	ppp_settings.refuse_pap = 1;
mbed714	0:d616ece2d859	498	ppp_settings.refuse_chap = 0;
mbed714	0:d616ece2d859	499	break;
mbed714	0:d616ece2d859	500	}
mbed714	0:d616ece2d859	501
mbed714	0:d616ece2d859	502	if(user) {
mbed714	0:d616ece2d859	503	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
mbed714	0:d616ece2d859	504	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
mbed714	0:d616ece2d859	505	} else {
mbed714	0:d616ece2d859	506	ppp_settings.user[0] = '\0';
mbed714	0:d616ece2d859	507	}
mbed714	0:d616ece2d859	508
mbed714	0:d616ece2d859	509	if(passwd) {
mbed714	0:d616ece2d859	510	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
mbed714	0:d616ece2d859	511	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
mbed714	0:d616ece2d859	512	} else {
mbed714	0:d616ece2d859	513	ppp_settings.passwd[0] = '\0';
mbed714	0:d616ece2d859	514	}
mbed714	0:d616ece2d859	515	}
mbed714	0:d616ece2d859	516
mbed714	0:d616ece2d859	517	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	518	/** Open a new PPP connection using the given I/O device.
mbed714	0:d616ece2d859	519	* This initializes the PPP control block but does not
mbed714	0:d616ece2d859	520	* attempt to negotiate the LCP session. If this port
mbed714	0:d616ece2d859	521	* connects to a modem, the modem connection must be
mbed714	0:d616ece2d859	522	* established before calling this.
mbed714	0:d616ece2d859	523	* Return a new PPP connection descriptor on success or
mbed714	0:d616ece2d859	524	* an error code (negative) on failure.
mbed714	0:d616ece2d859	525	*
mbed714	0:d616ece2d859	526	* pppOpen() is directly defined to this function.
mbed714	0:d616ece2d859	527	*/
mbed714	0:d616ece2d859	528	int
mbed714	0:d616ece2d859	529	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
mbed714	0:d616ece2d859	530	{
mbed714	0:d616ece2d859	531	PPPControl *pc;
mbed714	0:d616ece2d859	532	int pd;
mbed714	0:d616ece2d859	533
mbed714	0:d616ece2d859	534	if (linkStatusCB == NULL) {
mbed714	0:d616ece2d859	535	/* PPP is single-threaded: without a callback,
mbed714	0:d616ece2d859	536	* there is no way to know when the link is up. */
mbed714	0:d616ece2d859	537	return PPPERR_PARAM;
mbed714	0:d616ece2d859	538	}
mbed714	0:d616ece2d859	539
mbed714	0:d616ece2d859	540	/* Find a free PPP session descriptor. */
mbed714	0:d616ece2d859	541	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
mbed714	0:d616ece2d859	542
mbed714	0:d616ece2d859	543	if (pd >= NUM_PPP) {
mbed714	0:d616ece2d859	544	pd = PPPERR_OPEN;
mbed714	0:d616ece2d859	545	} else {
mbed714	0:d616ece2d859	546	pc = &pppControl[pd];
mbed714	0:d616ece2d859	547	/* @todo: is this correct or do I overwrite something? */
mbed714	0:d616ece2d859	548	memset(pc, 0, sizeof(PPPControl));
mbed714	0:d616ece2d859	549	pc->rx.pd = pd;
mbed714	0:d616ece2d859	550	pc->rx.fd = fd;
mbed714	0:d616ece2d859	551
mbed714	0:d616ece2d859	552	pc->openFlag = 1;
mbed714	0:d616ece2d859	553	pc->fd = fd;
mbed714	0:d616ece2d859	554
mbed714	0:d616ece2d859	555	#if VJ_SUPPORT
mbed714	0:d616ece2d859	556	vj_compress_init(&pc->vjComp);
mbed714	0:d616ece2d859	557	#endif /* VJ_SUPPORT */
mbed714	0:d616ece2d859	558
mbed714	0:d616ece2d859	559	/*
mbed714	0:d616ece2d859	560	* Default the in and out accm so that escape and flag characters
mbed714	0:d616ece2d859	561	* are always escaped.
mbed714	0:d616ece2d859	562	*/
mbed714	0:d616ece2d859	563	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
mbed714	0:d616ece2d859	564	pc->outACCM[15] = 0x60;
mbed714	0:d616ece2d859	565
mbed714	0:d616ece2d859	566	pc->linkStatusCB = linkStatusCB;
mbed714	0:d616ece2d859	567	pc->linkStatusCtx = linkStatusCtx;
mbed714	0:d616ece2d859	568
mbed714	0:d616ece2d859	569	/*
mbed714	0:d616ece2d859	570	* Start the connection and handle incoming events (packet or timeout).
mbed714	0:d616ece2d859	571	*/
mbed714	0:d616ece2d859	572	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
mbed714	0:d616ece2d859	573	pppStart(pd);
mbed714	0:d616ece2d859	574	#if PPP_INPROC_OWNTHREAD
mbed714	0:d616ece2d859	575	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
mbed714	0:d616ece2d859	576	#endif
mbed714	0:d616ece2d859	577	}
mbed714	0:d616ece2d859	578
mbed714	0:d616ece2d859	579	return pd;
mbed714	0:d616ece2d859	580	}
mbed714	0:d616ece2d859	581	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	582
mbed714	0:d616ece2d859	583	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	584	static void pppOverEthernetLinkStatusCB(int pd, int up);
mbed714	0:d616ece2d859	585
mbed714	0:d616ece2d859	586	void
mbed714	0:d616ece2d859	587	pppOverEthernetClose(int pd)
mbed714	0:d616ece2d859	588	{
mbed714	0:d616ece2d859	589	PPPControl* pc = &pppControl[pd];
mbed714	0:d616ece2d859	590
mbed714	0:d616ece2d859	591	/* TJL There's no lcp_deinit */
mbed714	0:d616ece2d859	592	lcp_close(pd, NULL);
mbed714	0:d616ece2d859	593
mbed714	0:d616ece2d859	594	pppoe_destroy(&pc->netif);
mbed714	0:d616ece2d859	595	}
mbed714	0:d616ece2d859	596
mbed714	0:d616ece2d859	597	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
mbed714	0:d616ece2d859	598	{
mbed714	0:d616ece2d859	599	PPPControl *pc;
mbed714	0:d616ece2d859	600	int pd;
mbed714	0:d616ece2d859	601
mbed714	0:d616ece2d859	602	LWIP_UNUSED_ARG(service_name);
mbed714	0:d616ece2d859	603	LWIP_UNUSED_ARG(concentrator_name);
mbed714	0:d616ece2d859	604
mbed714	0:d616ece2d859	605	if (linkStatusCB == NULL) {
mbed714	0:d616ece2d859	606	/* PPP is single-threaded: without a callback,
mbed714	0:d616ece2d859	607	* there is no way to know when the link is up. */
mbed714	0:d616ece2d859	608	return PPPERR_PARAM;
mbed714	0:d616ece2d859	609	}
mbed714	0:d616ece2d859	610
mbed714	0:d616ece2d859	611	/* Find a free PPP session descriptor. Critical region? */
mbed714	0:d616ece2d859	612	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
mbed714	0:d616ece2d859	613	if (pd >= NUM_PPP) {
mbed714	0:d616ece2d859	614	pd = PPPERR_OPEN;
mbed714	0:d616ece2d859	615	} else {
mbed714	0:d616ece2d859	616	pc = &pppControl[pd];
mbed714	0:d616ece2d859	617	memset(pc, 0, sizeof(PPPControl));
mbed714	0:d616ece2d859	618	pc->openFlag = 1;
mbed714	0:d616ece2d859	619	pc->ethif = ethif;
mbed714	0:d616ece2d859	620
mbed714	0:d616ece2d859	621	pc->linkStatusCB = linkStatusCB;
mbed714	0:d616ece2d859	622	pc->linkStatusCtx = linkStatusCtx;
mbed714	0:d616ece2d859	623
mbed714	0:d616ece2d859	624	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
mbed714	0:d616ece2d859	625	lcp_wantoptions[pd].neg_asyncmap = 0;
mbed714	0:d616ece2d859	626	lcp_wantoptions[pd].neg_pcompression = 0;
mbed714	0:d616ece2d859	627	lcp_wantoptions[pd].neg_accompression = 0;
mbed714	0:d616ece2d859	628
mbed714	0:d616ece2d859	629	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
mbed714	0:d616ece2d859	630	lcp_allowoptions[pd].neg_asyncmap = 0;
mbed714	0:d616ece2d859	631	lcp_allowoptions[pd].neg_pcompression = 0;
mbed714	0:d616ece2d859	632	lcp_allowoptions[pd].neg_accompression = 0;
mbed714	0:d616ece2d859	633
mbed714	0:d616ece2d859	634	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
mbed714	0:d616ece2d859	635	pc->openFlag = 0;
mbed714	0:d616ece2d859	636	return PPPERR_OPEN;
mbed714	0:d616ece2d859	637	}
mbed714	0:d616ece2d859	638
mbed714	0:d616ece2d859	639	pppoe_connect(pc->pppoe_sc);
mbed714	0:d616ece2d859	640	}
mbed714	0:d616ece2d859	641
mbed714	0:d616ece2d859	642	return pd;
mbed714	0:d616ece2d859	643	}
mbed714	0:d616ece2d859	644	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	645
mbed714	0:d616ece2d859	646
mbed714	0:d616ece2d859	647	/* Close a PPP connection and release the descriptor.
mbed714	0:d616ece2d859	648	* Any outstanding packets in the queues are dropped.
mbed714	0:d616ece2d859	649	* Return 0 on success, an error code on failure. */
mbed714	0:d616ece2d859	650	int
mbed714	0:d616ece2d859	651	pppClose(int pd)
mbed714	0:d616ece2d859	652	{
mbed714	0:d616ece2d859	653	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	654	int st = 0;
mbed714	0:d616ece2d859	655
mbed714	0:d616ece2d859	656	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
mbed714	0:d616ece2d859	657
mbed714	0:d616ece2d859	658	/* Disconnect */
mbed714	0:d616ece2d859	659	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	660	if(pc->ethif) {
mbed714	0:d616ece2d859	661	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
mbed714	0:d616ece2d859	662	pc->errCode = PPPERR_USER;
mbed714	0:d616ece2d859	663	/* This will leave us at PHASE_DEAD. */
mbed714	0:d616ece2d859	664	pppStop(pd);
mbed714	0:d616ece2d859	665	} else
mbed714	0:d616ece2d859	666	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	667	{
mbed714	0:d616ece2d859	668	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	669	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
mbed714	0:d616ece2d859	670	pc->errCode = PPPERR_USER;
mbed714	0:d616ece2d859	671	/* This will leave us at PHASE_DEAD. */
mbed714	0:d616ece2d859	672	pppStop(pd);
mbed714	0:d616ece2d859	673	pppRecvWakeup(pd);
mbed714	0:d616ece2d859	674	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	675	}
mbed714	0:d616ece2d859	676
mbed714	0:d616ece2d859	677	return st;
mbed714	0:d616ece2d859	678	}
mbed714	0:d616ece2d859	679
mbed714	0:d616ece2d859	680	/* This function is called when carrier is lost on the PPP channel. */
mbed714	0:d616ece2d859	681	void
mbed714	0:d616ece2d859	682	pppSigHUP(int pd)
mbed714	0:d616ece2d859	683	{
mbed714	0:d616ece2d859	684	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	685	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	686	if(pc->ethif) {
mbed714	0:d616ece2d859	687	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
mbed714	0:d616ece2d859	688	pppHup(pd);
mbed714	0:d616ece2d859	689	} else
mbed714	0:d616ece2d859	690	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	691	{
mbed714	0:d616ece2d859	692	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	693	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
mbed714	0:d616ece2d859	694	pppHup(pd);
mbed714	0:d616ece2d859	695	pppRecvWakeup(pd);
mbed714	0:d616ece2d859	696	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	697	}
mbed714	0:d616ece2d859	698	}
mbed714	0:d616ece2d859	699
mbed714	0:d616ece2d859	700	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	701	static void
mbed714	0:d616ece2d859	702	nPut(PPPControl pc, struct pbuf nb)
mbed714	0:d616ece2d859	703	{
mbed714	0:d616ece2d859	704	struct pbuf *b;
mbed714	0:d616ece2d859	705	int c;
mbed714	0:d616ece2d859	706
mbed714	0:d616ece2d859	707	for(b = nb; b != NULL; b = b->next) {
mbed714	0:d616ece2d859	708	if((c = sio_write(pc->fd, (u8_t *)b->payload, b->len)) != b->len) {
mbed714	0:d616ece2d859	709	PPPDEBUG(LOG_WARNING,
mbed714	0:d616ece2d859	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));
mbed714	0:d616ece2d859	711	LINK_STATS_INC(link.err);
mbed714	0:d616ece2d859	712	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
mbed714	0:d616ece2d859	713	snmp_inc_ifoutdiscards(&pc->netif);
mbed714	0:d616ece2d859	714	pbuf_free(nb);
mbed714	0:d616ece2d859	715	return;
mbed714	0:d616ece2d859	716	}
mbed714	0:d616ece2d859	717	}
mbed714	0:d616ece2d859	718
mbed714	0:d616ece2d859	719	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
mbed714	0:d616ece2d859	720	snmp_inc_ifoutucastpkts(&pc->netif);
mbed714	0:d616ece2d859	721	pbuf_free(nb);
mbed714	0:d616ece2d859	722	LINK_STATS_INC(link.xmit);
mbed714	0:d616ece2d859	723	}
mbed714	0:d616ece2d859	724
mbed714	0:d616ece2d859	725	/*
mbed714	0:d616ece2d859	726	* pppAppend - append given character to end of given pbuf. If outACCM
mbed714	0:d616ece2d859	727	* is not NULL and the character needs to be escaped, do so.
mbed714	0:d616ece2d859	728	* If pbuf is full, append another.
mbed714	0:d616ece2d859	729	* Return the current pbuf.
mbed714	0:d616ece2d859	730	*/
mbed714	0:d616ece2d859	731	static struct pbuf *
mbed714	0:d616ece2d859	732	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
mbed714	0:d616ece2d859	733	{
mbed714	0:d616ece2d859	734	struct pbuf *tb = nb;
mbed714	0:d616ece2d859	735
mbed714	0:d616ece2d859	736	/* Make sure there is room for the character and an escape code.
mbed714	0:d616ece2d859	737	* Sure we don't quite fill the buffer if the character doesn't
mbed714	0:d616ece2d859	738	* get escaped but is one character worth complicating this? */
mbed714	0:d616ece2d859	739	/* Note: We assume no packet header. */
mbed714	0:d616ece2d859	740	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
mbed714	0:d616ece2d859	741	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
mbed714	0:d616ece2d859	742	if (tb) {
mbed714	0:d616ece2d859	743	nb->next = tb;
mbed714	0:d616ece2d859	744	} else {
mbed714	0:d616ece2d859	745	LINK_STATS_INC(link.memerr);
mbed714	0:d616ece2d859	746	}
mbed714	0:d616ece2d859	747	nb = tb;
mbed714	0:d616ece2d859	748	}
mbed714	0:d616ece2d859	749
mbed714	0:d616ece2d859	750	if (nb) {
mbed714	0:d616ece2d859	751	if (outACCM && ESCAPE_P(*outACCM, c)) {
mbed714	0:d616ece2d859	752	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
mbed714	0:d616ece2d859	753	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
mbed714	0:d616ece2d859	754	} else {
mbed714	0:d616ece2d859	755	((u_char)nb->payload + nb->len++) = c;
mbed714	0:d616ece2d859	756	}
mbed714	0:d616ece2d859	757	}
mbed714	0:d616ece2d859	758
mbed714	0:d616ece2d859	759	return tb;
mbed714	0:d616ece2d859	760	}
mbed714	0:d616ece2d859	761	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	762
mbed714	0:d616ece2d859	763	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	764	static err_t
mbed714	0:d616ece2d859	765	pppifOutputOverEthernet(int pd, struct pbuf *p)
mbed714	0:d616ece2d859	766	{
mbed714	0:d616ece2d859	767	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	768	struct pbuf *pb;
mbed714	0:d616ece2d859	769	u_short protocol = PPP_IP;
mbed714	0:d616ece2d859	770	int i=0;
mbed714	0:d616ece2d859	771	u16_t tot_len;
mbed714	0:d616ece2d859	772
mbed714	0:d616ece2d859	773	/* @todo: try to use pbuf_header() here! */
mbed714	0:d616ece2d859	774	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
mbed714	0:d616ece2d859	775	if(!pb) {
mbed714	0:d616ece2d859	776	LINK_STATS_INC(link.memerr);
mbed714	0:d616ece2d859	777	LINK_STATS_INC(link.proterr);
mbed714	0:d616ece2d859	778	snmp_inc_ifoutdiscards(&pc->netif);
mbed714	0:d616ece2d859	779	return ERR_MEM;
mbed714	0:d616ece2d859	780	}
mbed714	0:d616ece2d859	781
mbed714	0:d616ece2d859	782	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
mbed714	0:d616ece2d859	783
mbed714	0:d616ece2d859	784	pc->lastXMit = sys_jiffies();
mbed714	0:d616ece2d859	785
mbed714	0:d616ece2d859	786	if (!pc->pcomp \|\| protocol > 0xFF) {
mbed714	0:d616ece2d859	787	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
mbed714	0:d616ece2d859	788	}
mbed714	0:d616ece2d859	789	((u_char)pb->payload + i) = protocol & 0xFF;
mbed714	0:d616ece2d859	790
mbed714	0:d616ece2d859	791	pbuf_chain(pb, p);
mbed714	0:d616ece2d859	792	tot_len = pb->tot_len;
mbed714	0:d616ece2d859	793
mbed714	0:d616ece2d859	794	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
mbed714	0:d616ece2d859	795	LINK_STATS_INC(link.err);
mbed714	0:d616ece2d859	796	snmp_inc_ifoutdiscards(&pc->netif);
mbed714	0:d616ece2d859	797	return PPPERR_DEVICE;
mbed714	0:d616ece2d859	798	}
mbed714	0:d616ece2d859	799
mbed714	0:d616ece2d859	800	snmp_add_ifoutoctets(&pc->netif, tot_len);
mbed714	0:d616ece2d859	801	snmp_inc_ifoutucastpkts(&pc->netif);
mbed714	0:d616ece2d859	802	LINK_STATS_INC(link.xmit);
mbed714	0:d616ece2d859	803	return ERR_OK;
mbed714	0:d616ece2d859	804	}
mbed714	0:d616ece2d859	805	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	806
mbed714	0:d616ece2d859	807	/* Send a packet on the given connection. */
mbed714	0:d616ece2d859	808	static err_t
mbed714	0:d616ece2d859	809	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
mbed714	0:d616ece2d859	810	{
mbed714	0:d616ece2d859	811	int pd = (int)(size_t)netif->state;
mbed714	0:d616ece2d859	812	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	813	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	814	u_short protocol = PPP_IP;
mbed714	0:d616ece2d859	815	u_int fcsOut = PPP_INITFCS;
mbed714	0:d616ece2d859	816	struct pbuf headMB = NULL, tailMB = NULL, *p;
mbed714	0:d616ece2d859	817	u_char c;
mbed714	0:d616ece2d859	818	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	819
mbed714	0:d616ece2d859	820	LWIP_UNUSED_ARG(ipaddr);
mbed714	0:d616ece2d859	821
mbed714	0:d616ece2d859	822	/* Validate parameters. */
mbed714	0:d616ece2d859	823	/* We let any protocol value go through - it can't hurt us
mbed714	0:d616ece2d859	824	* and the peer will just drop it if it's not accepting it. */
mbed714	0:d616ece2d859	825	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
mbed714	0:d616ece2d859	826	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
mbed714	0:d616ece2d859	827	pd, PPP_IP, pb));
mbed714	0:d616ece2d859	828	LINK_STATS_INC(link.opterr);
mbed714	0:d616ece2d859	829	LINK_STATS_INC(link.drop);
mbed714	0:d616ece2d859	830	snmp_inc_ifoutdiscards(netif);
mbed714	0:d616ece2d859	831	return ERR_ARG;
mbed714	0:d616ece2d859	832	}
mbed714	0:d616ece2d859	833
mbed714	0:d616ece2d859	834	/* Check that the link is up. */
mbed714	0:d616ece2d859	835	if (lcp_phase[pd] == PHASE_DEAD) {
mbed714	0:d616ece2d859	836	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
mbed714	0:d616ece2d859	837	LINK_STATS_INC(link.rterr);
mbed714	0:d616ece2d859	838	LINK_STATS_INC(link.drop);
mbed714	0:d616ece2d859	839	snmp_inc_ifoutdiscards(netif);
mbed714	0:d616ece2d859	840	return ERR_RTE;
mbed714	0:d616ece2d859	841	}
mbed714	0:d616ece2d859	842
mbed714	0:d616ece2d859	843	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	844	if(pc->ethif) {
mbed714	0:d616ece2d859	845	return pppifOutputOverEthernet(pd, pb);
mbed714	0:d616ece2d859	846	}
mbed714	0:d616ece2d859	847	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	848
mbed714	0:d616ece2d859	849	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	850	/* Grab an output buffer. */
mbed714	0:d616ece2d859	851	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
mbed714	0:d616ece2d859	852	if (headMB == NULL) {
mbed714	0:d616ece2d859	853	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
mbed714	0:d616ece2d859	854	LINK_STATS_INC(link.memerr);
mbed714	0:d616ece2d859	855	LINK_STATS_INC(link.drop);
mbed714	0:d616ece2d859	856	snmp_inc_ifoutdiscards(netif);
mbed714	0:d616ece2d859	857	return ERR_MEM;
mbed714	0:d616ece2d859	858	}
mbed714	0:d616ece2d859	859
mbed714	0:d616ece2d859	860	#if VJ_SUPPORT
mbed714	0:d616ece2d859	861	/*
mbed714	0:d616ece2d859	862	* Attempt Van Jacobson header compression if VJ is configured and
mbed714	0:d616ece2d859	863	* this is an IP packet.
mbed714	0:d616ece2d859	864	*/
mbed714	0:d616ece2d859	865	if (protocol == PPP_IP && pc->vjEnabled) {
mbed714	0:d616ece2d859	866	switch (vj_compress_tcp(&pc->vjComp, pb)) {
mbed714	0:d616ece2d859	867	case TYPE_IP:
mbed714	0:d616ece2d859	868	/* No change...
mbed714	0:d616ece2d859	869	protocol = PPP_IP_PROTOCOL; */
mbed714	0:d616ece2d859	870	break;
mbed714	0:d616ece2d859	871	case TYPE_COMPRESSED_TCP:
mbed714	0:d616ece2d859	872	protocol = PPP_VJC_COMP;
mbed714	0:d616ece2d859	873	break;
mbed714	0:d616ece2d859	874	case TYPE_UNCOMPRESSED_TCP:
mbed714	0:d616ece2d859	875	protocol = PPP_VJC_UNCOMP;
mbed714	0:d616ece2d859	876	break;
mbed714	0:d616ece2d859	877	default:
mbed714	0:d616ece2d859	878	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
mbed714	0:d616ece2d859	879	LINK_STATS_INC(link.proterr);
mbed714	0:d616ece2d859	880	LINK_STATS_INC(link.drop);
mbed714	0:d616ece2d859	881	snmp_inc_ifoutdiscards(netif);
mbed714	0:d616ece2d859	882	pbuf_free(headMB);
mbed714	0:d616ece2d859	883	return ERR_VAL;
mbed714	0:d616ece2d859	884	}
mbed714	0:d616ece2d859	885	}
mbed714	0:d616ece2d859	886	#endif /* VJ_SUPPORT */
mbed714	0:d616ece2d859	887
mbed714	0:d616ece2d859	888	tailMB = headMB;
mbed714	0:d616ece2d859	889
mbed714	0:d616ece2d859	890	/* Build the PPP header. */
mbed714	0:d616ece2d859	891	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
mbed714	0:d616ece2d859	892	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
mbed714	0:d616ece2d859	893	}
mbed714	0:d616ece2d859	894
mbed714	0:d616ece2d859	895	pc->lastXMit = sys_jiffies();
mbed714	0:d616ece2d859	896	if (!pc->accomp) {
mbed714	0:d616ece2d859	897	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
mbed714	0:d616ece2d859	898	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
mbed714	0:d616ece2d859	899	fcsOut = PPP_FCS(fcsOut, PPP_UI);
mbed714	0:d616ece2d859	900	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
mbed714	0:d616ece2d859	901	}
mbed714	0:d616ece2d859	902	if (!pc->pcomp \|\| protocol > 0xFF) {
mbed714	0:d616ece2d859	903	c = (protocol >> 8) & 0xFF;
mbed714	0:d616ece2d859	904	fcsOut = PPP_FCS(fcsOut, c);
mbed714	0:d616ece2d859	905	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed714	0:d616ece2d859	906	}
mbed714	0:d616ece2d859	907	c = protocol & 0xFF;
mbed714	0:d616ece2d859	908	fcsOut = PPP_FCS(fcsOut, c);
mbed714	0:d616ece2d859	909	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed714	0:d616ece2d859	910
mbed714	0:d616ece2d859	911	/* Load packet. */
mbed714	0:d616ece2d859	912	for(p = pb; p; p = p->next) {
mbed714	0:d616ece2d859	913	int n;
mbed714	0:d616ece2d859	914	u_char *sPtr;
mbed714	0:d616ece2d859	915
mbed714	0:d616ece2d859	916	sPtr = (u_char*)p->payload;
mbed714	0:d616ece2d859	917	n = p->len;
mbed714	0:d616ece2d859	918	while (n-- > 0) {
mbed714	0:d616ece2d859	919	c = *sPtr++;
mbed714	0:d616ece2d859	920
mbed714	0:d616ece2d859	921	/* Update FCS before checking for special characters. */
mbed714	0:d616ece2d859	922	fcsOut = PPP_FCS(fcsOut, c);
mbed714	0:d616ece2d859	923
mbed714	0:d616ece2d859	924	/* Copy to output buffer escaping special characters. */
mbed714	0:d616ece2d859	925	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed714	0:d616ece2d859	926	}
mbed714	0:d616ece2d859	927	}
mbed714	0:d616ece2d859	928
mbed714	0:d616ece2d859	929	/* Add FCS and trailing flag. */
mbed714	0:d616ece2d859	930	c = ~fcsOut & 0xFF;
mbed714	0:d616ece2d859	931	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed714	0:d616ece2d859	932	c = (~fcsOut >> 8) & 0xFF;
mbed714	0:d616ece2d859	933	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed714	0:d616ece2d859	934	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
mbed714	0:d616ece2d859	935
mbed714	0:d616ece2d859	936	/* If we failed to complete the packet, throw it away. */
mbed714	0:d616ece2d859	937	if (!tailMB) {
mbed714	0:d616ece2d859	938	PPPDEBUG(LOG_WARNING,
mbed714	0:d616ece2d859	939	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
mbed714	0:d616ece2d859	940	pd, protocol));
mbed714	0:d616ece2d859	941	pbuf_free(headMB);
mbed714	0:d616ece2d859	942	LINK_STATS_INC(link.memerr);
mbed714	0:d616ece2d859	943	LINK_STATS_INC(link.drop);
mbed714	0:d616ece2d859	944	snmp_inc_ifoutdiscards(netif);
mbed714	0:d616ece2d859	945	return ERR_MEM;
mbed714	0:d616ece2d859	946	}
mbed714	0:d616ece2d859	947
mbed714	0:d616ece2d859	948	/* Send it. */
mbed714	0:d616ece2d859	949	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
mbed714	0:d616ece2d859	950
mbed714	0:d616ece2d859	951	nPut(pc, headMB);
mbed714	0:d616ece2d859	952	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	953
mbed714	0:d616ece2d859	954	return ERR_OK;
mbed714	0:d616ece2d859	955	}
mbed714	0:d616ece2d859	956
mbed714	0:d616ece2d859	957	/* Get and set parameters for the given connection.
mbed714	0:d616ece2d859	958	* Return 0 on success, an error code on failure. */
mbed714	0:d616ece2d859	959	int
mbed714	0:d616ece2d859	960	pppIOCtl(int pd, int cmd, void *arg)
mbed714	0:d616ece2d859	961	{
mbed714	0:d616ece2d859	962	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	963	int st = 0;
mbed714	0:d616ece2d859	964
mbed714	0:d616ece2d859	965	if (pd < 0 \|\| pd >= NUM_PPP) {
mbed714	0:d616ece2d859	966	st = PPPERR_PARAM;
mbed714	0:d616ece2d859	967	} else {
mbed714	0:d616ece2d859	968	switch(cmd) {
mbed714	0:d616ece2d859	969	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
mbed714	0:d616ece2d859	970	if (arg) {
mbed714	0:d616ece2d859	971	(int )arg = (int)(pc->if_up);
mbed714	0:d616ece2d859	972	} else {
mbed714	0:d616ece2d859	973	st = PPPERR_PARAM;
mbed714	0:d616ece2d859	974	}
mbed714	0:d616ece2d859	975	break;
mbed714	0:d616ece2d859	976	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
mbed714	0:d616ece2d859	977	if (arg) {
mbed714	0:d616ece2d859	978	pc->errCode = (int )arg;
mbed714	0:d616ece2d859	979	} else {
mbed714	0:d616ece2d859	980	st = PPPERR_PARAM;
mbed714	0:d616ece2d859	981	}
mbed714	0:d616ece2d859	982	break;
mbed714	0:d616ece2d859	983	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
mbed714	0:d616ece2d859	984	if (arg) {
mbed714	0:d616ece2d859	985	(int )arg = (int)(pc->errCode);
mbed714	0:d616ece2d859	986	} else {
mbed714	0:d616ece2d859	987	st = PPPERR_PARAM;
mbed714	0:d616ece2d859	988	}
mbed714	0:d616ece2d859	989	break;
mbed714	0:d616ece2d859	990	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	991	case PPPCTLG_FD: /* Get the fd associated with the ppp */
mbed714	0:d616ece2d859	992	if (arg) {
mbed714	0:d616ece2d859	993	(sio_fd_t )arg = pc->fd;
mbed714	0:d616ece2d859	994	} else {
mbed714	0:d616ece2d859	995	st = PPPERR_PARAM;
mbed714	0:d616ece2d859	996	}
mbed714	0:d616ece2d859	997	break;
mbed714	0:d616ece2d859	998	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	999	default:
mbed714	0:d616ece2d859	1000	st = PPPERR_PARAM;
mbed714	0:d616ece2d859	1001	break;
mbed714	0:d616ece2d859	1002	}
mbed714	0:d616ece2d859	1003	}
mbed714	0:d616ece2d859	1004
mbed714	0:d616ece2d859	1005	return st;
mbed714	0:d616ece2d859	1006	}
mbed714	0:d616ece2d859	1007
mbed714	0:d616ece2d859	1008	/*
mbed714	0:d616ece2d859	1009	* Return the Maximum Transmission Unit for the given PPP connection.
mbed714	0:d616ece2d859	1010	*/
mbed714	0:d616ece2d859	1011	u_short
mbed714	0:d616ece2d859	1012	pppMTU(int pd)
mbed714	0:d616ece2d859	1013	{
mbed714	0:d616ece2d859	1014	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	1015	u_short st;
mbed714	0:d616ece2d859	1016
mbed714	0:d616ece2d859	1017	/* Validate parameters. */
mbed714	0:d616ece2d859	1018	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed714	0:d616ece2d859	1019	st = 0;
mbed714	0:d616ece2d859	1020	} else {
mbed714	0:d616ece2d859	1021	st = pc->mtu;
mbed714	0:d616ece2d859	1022	}
mbed714	0:d616ece2d859	1023
mbed714	0:d616ece2d859	1024	return st;
mbed714	0:d616ece2d859	1025	}
mbed714	0:d616ece2d859	1026
mbed714	0:d616ece2d859	1027	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	1028	int
mbed714	0:d616ece2d859	1029	pppWriteOverEthernet(int pd, const u_char *s, int n)
mbed714	0:d616ece2d859	1030	{
mbed714	0:d616ece2d859	1031	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	1032	struct pbuf *pb;
mbed714	0:d616ece2d859	1033
mbed714	0:d616ece2d859	1034	/* skip address & flags */
mbed714	0:d616ece2d859	1035	s += 2;
mbed714	0:d616ece2d859	1036	n -= 2;
mbed714	0:d616ece2d859	1037
mbed714	0:d616ece2d859	1038	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
mbed714	0:d616ece2d859	1039	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
mbed714	0:d616ece2d859	1040	if(!pb) {
mbed714	0:d616ece2d859	1041	LINK_STATS_INC(link.memerr);
mbed714	0:d616ece2d859	1042	LINK_STATS_INC(link.proterr);
mbed714	0:d616ece2d859	1043	snmp_inc_ifoutdiscards(&pc->netif);
mbed714	0:d616ece2d859	1044	return PPPERR_ALLOC;
mbed714	0:d616ece2d859	1045	}
mbed714	0:d616ece2d859	1046
mbed714	0:d616ece2d859	1047	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
mbed714	0:d616ece2d859	1048
mbed714	0:d616ece2d859	1049	pc->lastXMit = sys_jiffies();
mbed714	0:d616ece2d859	1050
mbed714	0:d616ece2d859	1051	MEMCPY(pb->payload, s, n);
mbed714	0:d616ece2d859	1052
mbed714	0:d616ece2d859	1053	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
mbed714	0:d616ece2d859	1054	LINK_STATS_INC(link.err);
mbed714	0:d616ece2d859	1055	snmp_inc_ifoutdiscards(&pc->netif);
mbed714	0:d616ece2d859	1056	return PPPERR_DEVICE;
mbed714	0:d616ece2d859	1057	}
mbed714	0:d616ece2d859	1058
mbed714	0:d616ece2d859	1059	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
mbed714	0:d616ece2d859	1060	snmp_inc_ifoutucastpkts(&pc->netif);
mbed714	0:d616ece2d859	1061	LINK_STATS_INC(link.xmit);
mbed714	0:d616ece2d859	1062	return PPPERR_NONE;
mbed714	0:d616ece2d859	1063	}
mbed714	0:d616ece2d859	1064	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	1065
mbed714	0:d616ece2d859	1066	/*
mbed714	0:d616ece2d859	1067	* Write n characters to a ppp link.
mbed714	0:d616ece2d859	1068	* RETURN: >= 0 Number of characters written
mbed714	0:d616ece2d859	1069	* -1 Failed to write to device
mbed714	0:d616ece2d859	1070	*/
mbed714	0:d616ece2d859	1071	int
mbed714	0:d616ece2d859	1072	pppWrite(int pd, const u_char *s, int n)
mbed714	0:d616ece2d859	1073	{
mbed714	0:d616ece2d859	1074	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	1075	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	1076	u_char c;
mbed714	0:d616ece2d859	1077	u_int fcsOut;
mbed714	0:d616ece2d859	1078	struct pbuf headMB, tailMB;
mbed714	0:d616ece2d859	1079	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	1080
mbed714	0:d616ece2d859	1081	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	1082	if(pc->ethif) {
mbed714	0:d616ece2d859	1083	return pppWriteOverEthernet(pd, s, n);
mbed714	0:d616ece2d859	1084	}
mbed714	0:d616ece2d859	1085	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	1086
mbed714	0:d616ece2d859	1087	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	1088	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
mbed714	0:d616ece2d859	1089	if (headMB == NULL) {
mbed714	0:d616ece2d859	1090	LINK_STATS_INC(link.memerr);
mbed714	0:d616ece2d859	1091	LINK_STATS_INC(link.proterr);
mbed714	0:d616ece2d859	1092	snmp_inc_ifoutdiscards(&pc->netif);
mbed714	0:d616ece2d859	1093	return PPPERR_ALLOC;
mbed714	0:d616ece2d859	1094	}
mbed714	0:d616ece2d859	1095
mbed714	0:d616ece2d859	1096	tailMB = headMB;
mbed714	0:d616ece2d859	1097
mbed714	0:d616ece2d859	1098	/* If the link has been idle, we'll send a fresh flag character to
mbed714	0:d616ece2d859	1099	* flush any noise. */
mbed714	0:d616ece2d859	1100	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
mbed714	0:d616ece2d859	1101	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
mbed714	0:d616ece2d859	1102	}
mbed714	0:d616ece2d859	1103	pc->lastXMit = sys_jiffies();
mbed714	0:d616ece2d859	1104
mbed714	0:d616ece2d859	1105	fcsOut = PPP_INITFCS;
mbed714	0:d616ece2d859	1106	/* Load output buffer. */
mbed714	0:d616ece2d859	1107	while (n-- > 0) {
mbed714	0:d616ece2d859	1108	c = *s++;
mbed714	0:d616ece2d859	1109
mbed714	0:d616ece2d859	1110	/* Update FCS before checking for special characters. */
mbed714	0:d616ece2d859	1111	fcsOut = PPP_FCS(fcsOut, c);
mbed714	0:d616ece2d859	1112
mbed714	0:d616ece2d859	1113	/* Copy to output buffer escaping special characters. */
mbed714	0:d616ece2d859	1114	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed714	0:d616ece2d859	1115	}
mbed714	0:d616ece2d859	1116
mbed714	0:d616ece2d859	1117	/* Add FCS and trailing flag. */
mbed714	0:d616ece2d859	1118	c = ~fcsOut & 0xFF;
mbed714	0:d616ece2d859	1119	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed714	0:d616ece2d859	1120	c = (~fcsOut >> 8) & 0xFF;
mbed714	0:d616ece2d859	1121	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed714	0:d616ece2d859	1122	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
mbed714	0:d616ece2d859	1123
mbed714	0:d616ece2d859	1124	/* If we failed to complete the packet, throw it away.
mbed714	0:d616ece2d859	1125	* Otherwise send it. */
mbed714	0:d616ece2d859	1126	if (!tailMB) {
mbed714	0:d616ece2d859	1127	PPPDEBUG(LOG_WARNING,
mbed714	0:d616ece2d859	1128	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
mbed714	0:d616ece2d859	1129	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
mbed714	0:d616ece2d859	1130	pbuf_free(headMB);
mbed714	0:d616ece2d859	1131	LINK_STATS_INC(link.memerr);
mbed714	0:d616ece2d859	1132	LINK_STATS_INC(link.proterr);
mbed714	0:d616ece2d859	1133	snmp_inc_ifoutdiscards(&pc->netif);
mbed714	0:d616ece2d859	1134	return PPPERR_ALLOC;
mbed714	0:d616ece2d859	1135	}
mbed714	0:d616ece2d859	1136
mbed714	0:d616ece2d859	1137	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
mbed714	0:d616ece2d859	1138	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
mbed714	0:d616ece2d859	1139	nPut(pc, headMB);
mbed714	0:d616ece2d859	1140	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	1141
mbed714	0:d616ece2d859	1142	return PPPERR_NONE;
mbed714	0:d616ece2d859	1143	}
mbed714	0:d616ece2d859	1144
mbed714	0:d616ece2d859	1145	/*
mbed714	0:d616ece2d859	1146	* ppp_send_config - configure the transmit characteristics of
mbed714	0:d616ece2d859	1147	* the ppp interface.
mbed714	0:d616ece2d859	1148	*/
mbed714	0:d616ece2d859	1149	void
mbed714	0:d616ece2d859	1150	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
mbed714	0:d616ece2d859	1151	{
mbed714	0:d616ece2d859	1152	PPPControl *pc = &pppControl[unit];
mbed714	0:d616ece2d859	1153	int i;
mbed714	0:d616ece2d859	1154
mbed714	0:d616ece2d859	1155	pc->mtu = mtu;
mbed714	0:d616ece2d859	1156	pc->pcomp = pcomp;
mbed714	0:d616ece2d859	1157	pc->accomp = accomp;
mbed714	0:d616ece2d859	1158
mbed714	0:d616ece2d859	1159	/* Load the ACCM bits for the 32 control codes. */
mbed714	0:d616ece2d859	1160	for (i = 0; i < 32/8; i++) {
mbed714	0:d616ece2d859	1161	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
mbed714	0:d616ece2d859	1162	}
mbed714	0:d616ece2d859	1163	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
mbed714	0:d616ece2d859	1164	unit,
mbed714	0:d616ece2d859	1165	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
mbed714	0:d616ece2d859	1166	}
mbed714	0:d616ece2d859	1167
mbed714	0:d616ece2d859	1168
mbed714	0:d616ece2d859	1169	/*
mbed714	0:d616ece2d859	1170	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
mbed714	0:d616ece2d859	1171	*/
mbed714	0:d616ece2d859	1172	void
mbed714	0:d616ece2d859	1173	ppp_set_xaccm(int unit, ext_accm *accm)
mbed714	0:d616ece2d859	1174	{
mbed714	0:d616ece2d859	1175	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
mbed714	0:d616ece2d859	1176	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
mbed714	0:d616ece2d859	1177	unit,
mbed714	0:d616ece2d859	1178	pppControl[unit].outACCM[0],
mbed714	0:d616ece2d859	1179	pppControl[unit].outACCM[1],
mbed714	0:d616ece2d859	1180	pppControl[unit].outACCM[2],
mbed714	0:d616ece2d859	1181	pppControl[unit].outACCM[3]));
mbed714	0:d616ece2d859	1182	}
mbed714	0:d616ece2d859	1183
mbed714	0:d616ece2d859	1184
mbed714	0:d616ece2d859	1185	/*
mbed714	0:d616ece2d859	1186	* ppp_recv_config - configure the receive-side characteristics of
mbed714	0:d616ece2d859	1187	* the ppp interface.
mbed714	0:d616ece2d859	1188	*/
mbed714	0:d616ece2d859	1189	void
mbed714	0:d616ece2d859	1190	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
mbed714	0:d616ece2d859	1191	{
mbed714	0:d616ece2d859	1192	PPPControl *pc = &pppControl[unit];
mbed714	0:d616ece2d859	1193	int i;
mbed714	0:d616ece2d859	1194	SYS_ARCH_DECL_PROTECT(lev);
mbed714	0:d616ece2d859	1195
mbed714	0:d616ece2d859	1196	LWIP_UNUSED_ARG(accomp);
mbed714	0:d616ece2d859	1197	LWIP_UNUSED_ARG(pcomp);
mbed714	0:d616ece2d859	1198	LWIP_UNUSED_ARG(mru);
mbed714	0:d616ece2d859	1199
mbed714	0:d616ece2d859	1200	/* Load the ACCM bits for the 32 control codes. */
mbed714	0:d616ece2d859	1201	SYS_ARCH_PROTECT(lev);
mbed714	0:d616ece2d859	1202	for (i = 0; i < 32 / 8; i++) {
mbed714	0:d616ece2d859	1203	/* @todo: does this work? ext_accm has been modified from pppd! */
mbed714	0:d616ece2d859	1204	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
mbed714	0:d616ece2d859	1205	}
mbed714	0:d616ece2d859	1206	SYS_ARCH_UNPROTECT(lev);
mbed714	0:d616ece2d859	1207	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
mbed714	0:d616ece2d859	1208	unit,
mbed714	0:d616ece2d859	1209	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
mbed714	0:d616ece2d859	1210	}
mbed714	0:d616ece2d859	1211
mbed714	0:d616ece2d859	1212	#if 0
mbed714	0:d616ece2d859	1213	/*
mbed714	0:d616ece2d859	1214	* ccp_test - ask kernel whether a given compression method
mbed714	0:d616ece2d859	1215	* is acceptable for use. Returns 1 if the method and parameters
mbed714	0:d616ece2d859	1216	* are OK, 0 if the method is known but the parameters are not OK
mbed714	0:d616ece2d859	1217	* (e.g. code size should be reduced), or -1 if the method is unknown.
mbed714	0:d616ece2d859	1218	*/
mbed714	0:d616ece2d859	1219	int
mbed714	0:d616ece2d859	1220	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
mbed714	0:d616ece2d859	1221	{
mbed714	0:d616ece2d859	1222	return 0; /* XXX Currently no compression. */
mbed714	0:d616ece2d859	1223	}
mbed714	0:d616ece2d859	1224
mbed714	0:d616ece2d859	1225	/*
mbed714	0:d616ece2d859	1226	* ccp_flags_set - inform kernel about the current state of CCP.
mbed714	0:d616ece2d859	1227	*/
mbed714	0:d616ece2d859	1228	void
mbed714	0:d616ece2d859	1229	ccp_flags_set(int unit, int isopen, int isup)
mbed714	0:d616ece2d859	1230	{
mbed714	0:d616ece2d859	1231	/* XXX */
mbed714	0:d616ece2d859	1232	}
mbed714	0:d616ece2d859	1233
mbed714	0:d616ece2d859	1234	/*
mbed714	0:d616ece2d859	1235	* ccp_fatal_error - returns 1 if decompression was disabled as a
mbed714	0:d616ece2d859	1236	* result of an error detected after decompression of a packet,
mbed714	0:d616ece2d859	1237	* 0 otherwise. This is necessary because of patent nonsense.
mbed714	0:d616ece2d859	1238	*/
mbed714	0:d616ece2d859	1239	int
mbed714	0:d616ece2d859	1240	ccp_fatal_error(int unit)
mbed714	0:d616ece2d859	1241	{
mbed714	0:d616ece2d859	1242	/* XXX */
mbed714	0:d616ece2d859	1243	return 0;
mbed714	0:d616ece2d859	1244	}
mbed714	0:d616ece2d859	1245	#endif
mbed714	0:d616ece2d859	1246
mbed714	0:d616ece2d859	1247	/*
mbed714	0:d616ece2d859	1248	* get_idle_time - return how long the link has been idle.
mbed714	0:d616ece2d859	1249	*/
mbed714	0:d616ece2d859	1250	int
mbed714	0:d616ece2d859	1251	get_idle_time(int u, struct ppp_idle *ip)
mbed714	0:d616ece2d859	1252	{
mbed714	0:d616ece2d859	1253	/* XXX */
mbed714	0:d616ece2d859	1254	LWIP_UNUSED_ARG(u);
mbed714	0:d616ece2d859	1255	LWIP_UNUSED_ARG(ip);
mbed714	0:d616ece2d859	1256
mbed714	0:d616ece2d859	1257	return 0;
mbed714	0:d616ece2d859	1258	}
mbed714	0:d616ece2d859	1259
mbed714	0:d616ece2d859	1260
mbed714	0:d616ece2d859	1261	/*
mbed714	0:d616ece2d859	1262	* Return user specified netmask, modified by any mask we might determine
mbed714	0:d616ece2d859	1263	* for address `addr' (in network byte order).
mbed714	0:d616ece2d859	1264	* Here we scan through the system's list of interfaces, looking for
mbed714	0:d616ece2d859	1265	* any non-point-to-point interfaces which might appear to be on the same
mbed714	0:d616ece2d859	1266	* network as `addr'. If we find any, we OR in their netmask to the
mbed714	0:d616ece2d859	1267	* user-specified netmask.
mbed714	0:d616ece2d859	1268	*/
mbed714	0:d616ece2d859	1269	u32_t
mbed714	0:d616ece2d859	1270	GetMask(u32_t addr)
mbed714	0:d616ece2d859	1271	{
mbed714	0:d616ece2d859	1272	u32_t mask, nmask;
mbed714	0:d616ece2d859	1273
mbed714	0:d616ece2d859	1274	htonl(addr);
mbed714	0:d616ece2d859	1275	if (IP_CLASSA(addr)) { /* determine network mask for address class */
mbed714	0:d616ece2d859	1276	nmask = IP_CLASSA_NET;
mbed714	0:d616ece2d859	1277	} else if (IP_CLASSB(addr)) {
mbed714	0:d616ece2d859	1278	nmask = IP_CLASSB_NET;
mbed714	0:d616ece2d859	1279	} else {
mbed714	0:d616ece2d859	1280	nmask = IP_CLASSC_NET;
mbed714	0:d616ece2d859	1281	}
mbed714	0:d616ece2d859	1282
mbed714	0:d616ece2d859	1283	/* class D nets are disallowed by bad_ip_adrs */
mbed714	0:d616ece2d859	1284	mask = subnetMask \| htonl(nmask);
mbed714	0:d616ece2d859	1285
mbed714	0:d616ece2d859	1286	/* XXX
mbed714	0:d616ece2d859	1287	* Scan through the system's network interfaces.
mbed714	0:d616ece2d859	1288	* Get each netmask and OR them into our mask.
mbed714	0:d616ece2d859	1289	*/
mbed714	0:d616ece2d859	1290
mbed714	0:d616ece2d859	1291	return mask;
mbed714	0:d616ece2d859	1292	}
mbed714	0:d616ece2d859	1293
mbed714	0:d616ece2d859	1294	/*
mbed714	0:d616ece2d859	1295	* sifvjcomp - config tcp header compression
mbed714	0:d616ece2d859	1296	*/
mbed714	0:d616ece2d859	1297	int
mbed714	0:d616ece2d859	1298	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
mbed714	0:d616ece2d859	1299	{
mbed714	0:d616ece2d859	1300	#if PPPOS_SUPPORT && VJ_SUPPORT
mbed714	0:d616ece2d859	1301	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	1302
mbed714	0:d616ece2d859	1303	pc->vjEnabled = vjcomp;
mbed714	0:d616ece2d859	1304	pc->vjComp.compressSlot = cidcomp;
mbed714	0:d616ece2d859	1305	pc->vjComp.maxSlotIndex = maxcid;
mbed714	0:d616ece2d859	1306	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
mbed714	0:d616ece2d859	1307	vjcomp, cidcomp, maxcid));
mbed714	0:d616ece2d859	1308	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed714	0:d616ece2d859	1309	LWIP_UNUSED_ARG(pd);
mbed714	0:d616ece2d859	1310	LWIP_UNUSED_ARG(vjcomp);
mbed714	0:d616ece2d859	1311	LWIP_UNUSED_ARG(cidcomp);
mbed714	0:d616ece2d859	1312	LWIP_UNUSED_ARG(maxcid);
mbed714	0:d616ece2d859	1313	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed714	0:d616ece2d859	1314
mbed714	0:d616ece2d859	1315	return 0;
mbed714	0:d616ece2d859	1316	}
mbed714	0:d616ece2d859	1317
mbed714	0:d616ece2d859	1318	/*
mbed714	0:d616ece2d859	1319	* pppifNetifInit - netif init callback
mbed714	0:d616ece2d859	1320	*/
mbed714	0:d616ece2d859	1321	static err_t
mbed714	0:d616ece2d859	1322	pppifNetifInit(struct netif *netif)
mbed714	0:d616ece2d859	1323	{
mbed714	0:d616ece2d859	1324	netif->name[0] = 'p';
mbed714	0:d616ece2d859	1325	netif->name[1] = 'p';
mbed714	0:d616ece2d859	1326	netif->output = pppifOutput;
mbed714	0:d616ece2d859	1327	netif->mtu = pppMTU((int)(size_t)netif->state);
mbed714	0:d616ece2d859	1328	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
mbed714	0:d616ece2d859	1329	#if LWIP_NETIF_HOSTNAME
mbed714	0:d616ece2d859	1330	/* @todo: Initialize interface hostname */
mbed714	0:d616ece2d859	1331	/* netif_set_hostname(netif, "lwip"); */
mbed714	0:d616ece2d859	1332	#endif /* LWIP_NETIF_HOSTNAME */
mbed714	0:d616ece2d859	1333	return ERR_OK;
mbed714	0:d616ece2d859	1334	}
mbed714	0:d616ece2d859	1335
mbed714	0:d616ece2d859	1336
mbed714	0:d616ece2d859	1337	/*
mbed714	0:d616ece2d859	1338	* sifup - Config the interface up and enable IP packets to pass.
mbed714	0:d616ece2d859	1339	*/
mbed714	0:d616ece2d859	1340	int
mbed714	0:d616ece2d859	1341	sifup(int pd)
mbed714	0:d616ece2d859	1342	{
mbed714	0:d616ece2d859	1343	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	1344	int st = 1;
mbed714	0:d616ece2d859	1345
mbed714	0:d616ece2d859	1346	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed714	0:d616ece2d859	1347	st = 0;
mbed714	0:d616ece2d859	1348	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mbed714	0:d616ece2d859	1349	} else {
mbed714	0:d616ece2d859	1350	netif_remove(&pc->netif);
mbed714	0:d616ece2d859	1351	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
mbed714	0:d616ece2d859	1352	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
mbed714	0:d616ece2d859	1353	netif_set_up(&pc->netif);
mbed714	0:d616ece2d859	1354	pc->if_up = 1;
mbed714	0:d616ece2d859	1355	pc->errCode = PPPERR_NONE;
mbed714	0:d616ece2d859	1356
mbed714	0:d616ece2d859	1357	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
mbed714	0:d616ece2d859	1358	if (pc->linkStatusCB) {
mbed714	0:d616ece2d859	1359	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
mbed714	0:d616ece2d859	1360	}
mbed714	0:d616ece2d859	1361	} else {
mbed714	0:d616ece2d859	1362	st = 0;
mbed714	0:d616ece2d859	1363	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
mbed714	0:d616ece2d859	1364	}
mbed714	0:d616ece2d859	1365	}
mbed714	0:d616ece2d859	1366
mbed714	0:d616ece2d859	1367	return st;
mbed714	0:d616ece2d859	1368	}
mbed714	0:d616ece2d859	1369
mbed714	0:d616ece2d859	1370	/*
mbed714	0:d616ece2d859	1371	* sifnpmode - Set the mode for handling packets for a given NP.
mbed714	0:d616ece2d859	1372	*/
mbed714	0:d616ece2d859	1373	int
mbed714	0:d616ece2d859	1374	sifnpmode(int u, int proto, enum NPmode mode)
mbed714	0:d616ece2d859	1375	{
mbed714	0:d616ece2d859	1376	LWIP_UNUSED_ARG(u);
mbed714	0:d616ece2d859	1377	LWIP_UNUSED_ARG(proto);
mbed714	0:d616ece2d859	1378	LWIP_UNUSED_ARG(mode);
mbed714	0:d616ece2d859	1379	return 0;
mbed714	0:d616ece2d859	1380	}
mbed714	0:d616ece2d859	1381
mbed714	0:d616ece2d859	1382	/*
mbed714	0:d616ece2d859	1383	* sifdown - Config the interface down and disable IP.
mbed714	0:d616ece2d859	1384	*/
mbed714	0:d616ece2d859	1385	int
mbed714	0:d616ece2d859	1386	sifdown(int pd)
mbed714	0:d616ece2d859	1387	{
mbed714	0:d616ece2d859	1388	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	1389	int st = 1;
mbed714	0:d616ece2d859	1390
mbed714	0:d616ece2d859	1391	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed714	0:d616ece2d859	1392	st = 0;
mbed714	0:d616ece2d859	1393	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
mbed714	0:d616ece2d859	1394	} else {
mbed714	0:d616ece2d859	1395	pc->if_up = 0;
mbed714	0:d616ece2d859	1396	/* make sure the netif status callback is called */
mbed714	0:d616ece2d859	1397	netif_set_down(&pc->netif);
mbed714	0:d616ece2d859	1398	netif_remove(&pc->netif);
mbed714	0:d616ece2d859	1399	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
mbed714	0:d616ece2d859	1400	if (pc->linkStatusCB) {
mbed714	0:d616ece2d859	1401	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
mbed714	0:d616ece2d859	1402	}
mbed714	0:d616ece2d859	1403	}
mbed714	0:d616ece2d859	1404	return st;
mbed714	0:d616ece2d859	1405	}
mbed714	0:d616ece2d859	1406
mbed714	0:d616ece2d859	1407	/**
mbed714	0:d616ece2d859	1408	* sifaddr - Config the interface IP addresses and netmask.
mbed714	0:d616ece2d859	1409	* @param pd Interface unit ???
mbed714	0:d616ece2d859	1410	* @param o Our IP address ???
mbed714	0:d616ece2d859	1411	* @param h His IP address ???
mbed714	0:d616ece2d859	1412	* @param m IP subnet mask ???
mbed714	0:d616ece2d859	1413	* @param ns1 Primary DNS
mbed714	0:d616ece2d859	1414	* @param ns2 Secondary DNS
mbed714	0:d616ece2d859	1415	*/
mbed714	0:d616ece2d859	1416	int
mbed714	0:d616ece2d859	1417	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
mbed714	0:d616ece2d859	1418	{
mbed714	0:d616ece2d859	1419	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	1420	int st = 1;
mbed714	0:d616ece2d859	1421
mbed714	0:d616ece2d859	1422	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed714	0:d616ece2d859	1423	st = 0;
mbed714	0:d616ece2d859	1424	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mbed714	0:d616ece2d859	1425	} else {
mbed714	0:d616ece2d859	1426	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
mbed714	0:d616ece2d859	1427	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
mbed714	0:d616ece2d859	1428	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
mbed714	0:d616ece2d859	1429	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
mbed714	0:d616ece2d859	1430	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
mbed714	0:d616ece2d859	1431	}
mbed714	0:d616ece2d859	1432	return st;
mbed714	0:d616ece2d859	1433	}
mbed714	0:d616ece2d859	1434
mbed714	0:d616ece2d859	1435	/**
mbed714	0:d616ece2d859	1436	* cifaddr - Clear the interface IP addresses, and delete routes
mbed714	0:d616ece2d859	1437	* through the interface if possible.
mbed714	0:d616ece2d859	1438	* @param pd Interface unit ???
mbed714	0:d616ece2d859	1439	* @param o Our IP address ???
mbed714	0:d616ece2d859	1440	* @param h IP broadcast address ???
mbed714	0:d616ece2d859	1441	*/
mbed714	0:d616ece2d859	1442	int
mbed714	0:d616ece2d859	1443	cifaddr( int pd, u32_t o, u32_t h)
mbed714	0:d616ece2d859	1444	{
mbed714	0:d616ece2d859	1445	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	1446	int st = 1;
mbed714	0:d616ece2d859	1447
mbed714	0:d616ece2d859	1448	LWIP_UNUSED_ARG(o);
mbed714	0:d616ece2d859	1449	LWIP_UNUSED_ARG(h);
mbed714	0:d616ece2d859	1450	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed714	0:d616ece2d859	1451	st = 0;
mbed714	0:d616ece2d859	1452	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mbed714	0:d616ece2d859	1453	} else {
mbed714	0:d616ece2d859	1454	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
mbed714	0:d616ece2d859	1455	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
mbed714	0:d616ece2d859	1456	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
mbed714	0:d616ece2d859	1457	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
mbed714	0:d616ece2d859	1458	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
mbed714	0:d616ece2d859	1459	}
mbed714	0:d616ece2d859	1460	return st;
mbed714	0:d616ece2d859	1461	}
mbed714	0:d616ece2d859	1462
mbed714	0:d616ece2d859	1463	/*
mbed714	0:d616ece2d859	1464	* sifdefaultroute - assign a default route through the address given.
mbed714	0:d616ece2d859	1465	*/
mbed714	0:d616ece2d859	1466	int
mbed714	0:d616ece2d859	1467	sifdefaultroute(int pd, u32_t l, u32_t g)
mbed714	0:d616ece2d859	1468	{
mbed714	0:d616ece2d859	1469	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	1470	int st = 1;
mbed714	0:d616ece2d859	1471
mbed714	0:d616ece2d859	1472	LWIP_UNUSED_ARG(l);
mbed714	0:d616ece2d859	1473	LWIP_UNUSED_ARG(g);
mbed714	0:d616ece2d859	1474
mbed714	0:d616ece2d859	1475	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed714	0:d616ece2d859	1476	st = 0;
mbed714	0:d616ece2d859	1477	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mbed714	0:d616ece2d859	1478	} else {
mbed714	0:d616ece2d859	1479	netif_set_default(&pc->netif);
mbed714	0:d616ece2d859	1480	}
mbed714	0:d616ece2d859	1481
mbed714	0:d616ece2d859	1482	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
mbed714	0:d616ece2d859	1483
mbed714	0:d616ece2d859	1484	return st;
mbed714	0:d616ece2d859	1485	}
mbed714	0:d616ece2d859	1486
mbed714	0:d616ece2d859	1487	/*
mbed714	0:d616ece2d859	1488	* cifdefaultroute - delete a default route through the address given.
mbed714	0:d616ece2d859	1489	*/
mbed714	0:d616ece2d859	1490	int
mbed714	0:d616ece2d859	1491	cifdefaultroute(int pd, u32_t l, u32_t g)
mbed714	0:d616ece2d859	1492	{
mbed714	0:d616ece2d859	1493	PPPControl *pc = &pppControl[pd];
mbed714	0:d616ece2d859	1494	int st = 1;
mbed714	0:d616ece2d859	1495
mbed714	0:d616ece2d859	1496	LWIP_UNUSED_ARG(l);
mbed714	0:d616ece2d859	1497	LWIP_UNUSED_ARG(g);
mbed714	0:d616ece2d859	1498
mbed714	0:d616ece2d859	1499	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed714	0:d616ece2d859	1500	st = 0;
mbed714	0:d616ece2d859	1501	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mbed714	0:d616ece2d859	1502	} else {
mbed714	0:d616ece2d859	1503	netif_set_default(NULL);
mbed714	0:d616ece2d859	1504	}
mbed714	0:d616ece2d859	1505
mbed714	0:d616ece2d859	1506	return st;
mbed714	0:d616ece2d859	1507	}
mbed714	0:d616ece2d859	1508
mbed714	0:d616ece2d859	1509	/**********************************/
mbed714	0:d616ece2d859	1510	/* LOCAL FUNCTION DEFINITIONS */
mbed714	0:d616ece2d859	1511	/**********************************/
mbed714	0:d616ece2d859	1512
mbed714	0:d616ece2d859	1513	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
mbed714	0:d616ece2d859	1514	/* The main PPP process function. This implements the state machine according
mbed714	0:d616ece2d859	1515	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
mbed714	0:d616ece2d859	1516	static void
mbed714	0:d616ece2d859	1517	pppInputThread(void *arg)
mbed714	0:d616ece2d859	1518	{
mbed714	0:d616ece2d859	1519	int count;
mbed714	0:d616ece2d859	1520	PPPControlRx *pcrx = arg;
mbed714	0:d616ece2d859	1521
mbed714	0:d616ece2d859	1522	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
mbed714	0:d616ece2d859	1523	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
mbed714	0:d616ece2d859	1524	if(count > 0) {
mbed714	0:d616ece2d859	1525	pppInProc(pcrx, pcrx->rxbuf, count);
mbed714	0:d616ece2d859	1526	} else {
mbed714	0:d616ece2d859	1527	/* nothing received, give other tasks a chance to run */
mbed714	0:d616ece2d859	1528	sys_msleep(1);
mbed714	0:d616ece2d859	1529	}
mbed714	0:d616ece2d859	1530	}
mbed714	0:d616ece2d859	1531	}
mbed714	0:d616ece2d859	1532	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
mbed714	0:d616ece2d859	1533
mbed714	0:d616ece2d859	1534	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	1535
mbed714	0:d616ece2d859	1536	void
mbed714	0:d616ece2d859	1537	pppOverEthernetInitFailed(int pd)
mbed714	0:d616ece2d859	1538	{
mbed714	0:d616ece2d859	1539	PPPControl* pc;
mbed714	0:d616ece2d859	1540
mbed714	0:d616ece2d859	1541	pppHup(pd);
mbed714	0:d616ece2d859	1542	pppStop(pd);
mbed714	0:d616ece2d859	1543
mbed714	0:d616ece2d859	1544	pc = &pppControl[pd];
mbed714	0:d616ece2d859	1545	pppoe_destroy(&pc->netif);
mbed714	0:d616ece2d859	1546	pc->openFlag = 0;
mbed714	0:d616ece2d859	1547
mbed714	0:d616ece2d859	1548	if(pc->linkStatusCB) {
mbed714	0:d616ece2d859	1549	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
mbed714	0:d616ece2d859	1550	}
mbed714	0:d616ece2d859	1551	}
mbed714	0:d616ece2d859	1552
mbed714	0:d616ece2d859	1553	static void
mbed714	0:d616ece2d859	1554	pppOverEthernetLinkStatusCB(int pd, int up)
mbed714	0:d616ece2d859	1555	{
mbed714	0:d616ece2d859	1556	if(up) {
mbed714	0:d616ece2d859	1557	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
mbed714	0:d616ece2d859	1558	pppStart(pd);
mbed714	0:d616ece2d859	1559	} else {
mbed714	0:d616ece2d859	1560	pppOverEthernetInitFailed(pd);
mbed714	0:d616ece2d859	1561	}
mbed714	0:d616ece2d859	1562	}
mbed714	0:d616ece2d859	1563	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	1564
mbed714	0:d616ece2d859	1565	struct pbuf *
mbed714	0:d616ece2d859	1566	pppSingleBuf(struct pbuf *p)
mbed714	0:d616ece2d859	1567	{
mbed714	0:d616ece2d859	1568	struct pbuf q, b;
mbed714	0:d616ece2d859	1569	u_char *pl;
mbed714	0:d616ece2d859	1570
mbed714	0:d616ece2d859	1571	if(p->tot_len == p->len) {
mbed714	0:d616ece2d859	1572	return p;
mbed714	0:d616ece2d859	1573	}
mbed714	0:d616ece2d859	1574
mbed714	0:d616ece2d859	1575	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
mbed714	0:d616ece2d859	1576	if(!q) {
mbed714	0:d616ece2d859	1577	PPPDEBUG(LOG_ERR,
mbed714	0:d616ece2d859	1578	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
mbed714	0:d616ece2d859	1579	return p; /* live dangerously */
mbed714	0:d616ece2d859	1580	}
mbed714	0:d616ece2d859	1581
mbed714	0:d616ece2d859	1582	for(b = p, pl = (u_char *) q->payload; b != NULL; b = b->next) {
mbed714	0:d616ece2d859	1583	MEMCPY(pl, b->payload, b->len);
mbed714	0:d616ece2d859	1584	pl += b->len;
mbed714	0:d616ece2d859	1585	}
mbed714	0:d616ece2d859	1586
mbed714	0:d616ece2d859	1587	pbuf_free(p);
mbed714	0:d616ece2d859	1588
mbed714	0:d616ece2d859	1589	return q;
mbed714	0:d616ece2d859	1590	}
mbed714	0:d616ece2d859	1591
mbed714	0:d616ece2d859	1592	struct pppInputHeader {
mbed714	0:d616ece2d859	1593	int unit;
mbed714	0:d616ece2d859	1594	u16_t proto;
mbed714	0:d616ece2d859	1595	};
mbed714	0:d616ece2d859	1596
mbed714	0:d616ece2d859	1597	/*
mbed714	0:d616ece2d859	1598	* Pass the processed input packet to the appropriate handler.
mbed714	0:d616ece2d859	1599	* This function and all handlers run in the context of the tcpip_thread
mbed714	0:d616ece2d859	1600	*/
mbed714	0:d616ece2d859	1601	static void
mbed714	0:d616ece2d859	1602	pppInput(void *arg)
mbed714	0:d616ece2d859	1603	{
mbed714	0:d616ece2d859	1604	struct pbuf nb = (struct pbuf )arg;
mbed714	0:d616ece2d859	1605	u16_t protocol;
mbed714	0:d616ece2d859	1606	int pd;
mbed714	0:d616ece2d859	1607
mbed714	0:d616ece2d859	1608	pd = ((struct pppInputHeader *)nb->payload)->unit;
mbed714	0:d616ece2d859	1609	protocol = ((struct pppInputHeader *)nb->payload)->proto;
mbed714	0:d616ece2d859	1610
mbed714	0:d616ece2d859	1611	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
mbed714	0:d616ece2d859	1612	LWIP_ASSERT("pbuf_header failed\n", 0);
mbed714	0:d616ece2d859	1613	goto drop;
mbed714	0:d616ece2d859	1614	}
mbed714	0:d616ece2d859	1615
mbed714	0:d616ece2d859	1616	LINK_STATS_INC(link.recv);
mbed714	0:d616ece2d859	1617	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
mbed714	0:d616ece2d859	1618	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
mbed714	0:d616ece2d859	1619
mbed714	0:d616ece2d859	1620	/*
mbed714	0:d616ece2d859	1621	* Toss all non-LCP packets unless LCP is OPEN.
mbed714	0:d616ece2d859	1622	* Until we get past the authentication phase, toss all packets
mbed714	0:d616ece2d859	1623	* except LCP, LQR and authentication packets.
mbed714	0:d616ece2d859	1624	*/
mbed714	0:d616ece2d859	1625	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
mbed714	0:d616ece2d859	1626	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
mbed714	0:d616ece2d859	1627	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
mbed714	0:d616ece2d859	1628	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
mbed714	0:d616ece2d859	1629	goto drop;
mbed714	0:d616ece2d859	1630	}
mbed714	0:d616ece2d859	1631	}
mbed714	0:d616ece2d859	1632
mbed714	0:d616ece2d859	1633	switch(protocol) {
mbed714	0:d616ece2d859	1634	case PPP_VJC_COMP: /* VJ compressed TCP */
mbed714	0:d616ece2d859	1635	#if PPPOS_SUPPORT && VJ_SUPPORT
mbed714	0:d616ece2d859	1636	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
mbed714	0:d616ece2d859	1637	/*
mbed714	0:d616ece2d859	1638	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
mbed714	0:d616ece2d859	1639	* pass the result to IP.
mbed714	0:d616ece2d859	1640	*/
mbed714	0:d616ece2d859	1641	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
mbed714	0:d616ece2d859	1642	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
mbed714	0:d616ece2d859	1643	return;
mbed714	0:d616ece2d859	1644	}
mbed714	0:d616ece2d859	1645	/* Something's wrong so drop it. */
mbed714	0:d616ece2d859	1646	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
mbed714	0:d616ece2d859	1647	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed714	0:d616ece2d859	1648	/* No handler for this protocol so drop the packet. */
mbed714	0:d616ece2d859	1649	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
mbed714	0:d616ece2d859	1650	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed714	0:d616ece2d859	1651	break;
mbed714	0:d616ece2d859	1652
mbed714	0:d616ece2d859	1653	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
mbed714	0:d616ece2d859	1654	#if PPPOS_SUPPORT && VJ_SUPPORT
mbed714	0:d616ece2d859	1655	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
mbed714	0:d616ece2d859	1656	/*
mbed714	0:d616ece2d859	1657	* Process the TCP/IP header for VJ header compression and then pass
mbed714	0:d616ece2d859	1658	* the packet to IP.
mbed714	0:d616ece2d859	1659	*/
mbed714	0:d616ece2d859	1660	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
mbed714	0:d616ece2d859	1661	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
mbed714	0:d616ece2d859	1662	return;
mbed714	0:d616ece2d859	1663	}
mbed714	0:d616ece2d859	1664	/* Something's wrong so drop it. */
mbed714	0:d616ece2d859	1665	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
mbed714	0:d616ece2d859	1666	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed714	0:d616ece2d859	1667	/* No handler for this protocol so drop the packet. */
mbed714	0:d616ece2d859	1668	PPPDEBUG(LOG_INFO,
mbed714	0:d616ece2d859	1669	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
mbed714	0:d616ece2d859	1670	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
mbed714	0:d616ece2d859	1671	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed714	0:d616ece2d859	1672	break;
mbed714	0:d616ece2d859	1673
mbed714	0:d616ece2d859	1674	case PPP_IP: /* Internet Protocol */
mbed714	0:d616ece2d859	1675	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
mbed714	0:d616ece2d859	1676	if (pppControl[pd].netif.input) {
mbed714	0:d616ece2d859	1677	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
mbed714	0:d616ece2d859	1678	return;
mbed714	0:d616ece2d859	1679	}
mbed714	0:d616ece2d859	1680	break;
mbed714	0:d616ece2d859	1681
mbed714	0:d616ece2d859	1682	default: {
mbed714	0:d616ece2d859	1683	struct protent *protp;
mbed714	0:d616ece2d859	1684	int i;
mbed714	0:d616ece2d859	1685
mbed714	0:d616ece2d859	1686	/*
mbed714	0:d616ece2d859	1687	* Upcall the proper protocol input routine.
mbed714	0:d616ece2d859	1688	*/
mbed714	0:d616ece2d859	1689	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
mbed714	0:d616ece2d859	1690	if (protp->protocol == protocol && protp->enabled_flag) {
mbed714	0:d616ece2d859	1691	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
mbed714	0:d616ece2d859	1692	nb = pppSingleBuf(nb);
mbed714	0:d616ece2d859	1693	(protp->input)(pd, (u_char )nb->payload, nb->len);
mbed714	0:d616ece2d859	1694	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
mbed714	0:d616ece2d859	1695	goto out;
mbed714	0:d616ece2d859	1696	}
mbed714	0:d616ece2d859	1697	}
mbed714	0:d616ece2d859	1698
mbed714	0:d616ece2d859	1699	/* No handler for this protocol so reject the packet. */
mbed714	0:d616ece2d859	1700	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
mbed714	0:d616ece2d859	1701	if (pbuf_header(nb, sizeof(protocol))) {
mbed714	0:d616ece2d859	1702	LWIP_ASSERT("pbuf_header failed\n", 0);
mbed714	0:d616ece2d859	1703	goto drop;
mbed714	0:d616ece2d859	1704	}
mbed714	0:d616ece2d859	1705	#if BYTE_ORDER == LITTLE_ENDIAN
mbed714	0:d616ece2d859	1706	protocol = htons(protocol);
mbed714	0:d616ece2d859	1707	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
mbed714	0:d616ece2d859	1708	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
mbed714	0:d616ece2d859	1709	lcp_sprotrej(pd, (u_char *)nb->payload, nb->len);
mbed714	0:d616ece2d859	1710	}
mbed714	0:d616ece2d859	1711	break;
mbed714	0:d616ece2d859	1712	}
mbed714	0:d616ece2d859	1713
mbed714	0:d616ece2d859	1714	drop:
mbed714	0:d616ece2d859	1715	LINK_STATS_INC(link.drop);
mbed714	0:d616ece2d859	1716	snmp_inc_ifindiscards(&pppControl[pd].netif);
mbed714	0:d616ece2d859	1717
mbed714	0:d616ece2d859	1718	out:
mbed714	0:d616ece2d859	1719	pbuf_free(nb);
mbed714	0:d616ece2d859	1720	return;
mbed714	0:d616ece2d859	1721	}
mbed714	0:d616ece2d859	1722
mbed714	0:d616ece2d859	1723	#if PPPOS_SUPPORT
mbed714	0:d616ece2d859	1724	/*
mbed714	0:d616ece2d859	1725	* Drop the input packet.
mbed714	0:d616ece2d859	1726	*/
mbed714	0:d616ece2d859	1727	static void
mbed714	0:d616ece2d859	1728	pppDrop(PPPControlRx *pcrx)
mbed714	0:d616ece2d859	1729	{
mbed714	0:d616ece2d859	1730	if (pcrx->inHead != NULL) {
mbed714	0:d616ece2d859	1731	#if 0
mbed714	0:d616ece2d859	1732	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
mbed714	0:d616ece2d859	1733	#endif
mbed714	0:d616ece2d859	1734	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
mbed714	0:d616ece2d859	1735	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
mbed714	0:d616ece2d859	1736	pbuf_free(pcrx->inTail);
mbed714	0:d616ece2d859	1737	}
mbed714	0:d616ece2d859	1738	pbuf_free(pcrx->inHead);
mbed714	0:d616ece2d859	1739	pcrx->inHead = NULL;
mbed714	0:d616ece2d859	1740	pcrx->inTail = NULL;
mbed714	0:d616ece2d859	1741	}
mbed714	0:d616ece2d859	1742	#if VJ_SUPPORT
mbed714	0:d616ece2d859	1743	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
mbed714	0:d616ece2d859	1744	#endif /* VJ_SUPPORT */
mbed714	0:d616ece2d859	1745
mbed714	0:d616ece2d859	1746	LINK_STATS_INC(link.drop);
mbed714	0:d616ece2d859	1747	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
mbed714	0:d616ece2d859	1748	}
mbed714	0:d616ece2d859	1749
mbed714	0:d616ece2d859	1750	/** Pass received raw characters to PPPoS to be decoded. This function is
mbed714	0:d616ece2d859	1751	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
mbed714	0:d616ece2d859	1752	*
mbed714	0:d616ece2d859	1753	* @param pd PPP descriptor index, returned by pppOpen()
mbed714	0:d616ece2d859	1754	* @param data received data
mbed714	0:d616ece2d859	1755	* @param len length of received data
mbed714	0:d616ece2d859	1756	*/
mbed714	0:d616ece2d859	1757	void
mbed714	0:d616ece2d859	1758	pppos_input(int pd, u_char* data, int len)
mbed714	0:d616ece2d859	1759	{
mbed714	0:d616ece2d859	1760	pppInProc(&pppControl[pd].rx, data, len);
mbed714	0:d616ece2d859	1761	}
mbed714	0:d616ece2d859	1762
mbed714	0:d616ece2d859	1763	/**
mbed714	0:d616ece2d859	1764	* Process a received octet string.
mbed714	0:d616ece2d859	1765	*/
mbed714	0:d616ece2d859	1766	static void
mbed714	0:d616ece2d859	1767	pppInProc(PPPControlRx pcrx, u_char s, int l)
mbed714	0:d616ece2d859	1768	{
mbed714	0:d616ece2d859	1769	struct pbuf *nextNBuf;
mbed714	0:d616ece2d859	1770	u_char curChar;
mbed714	0:d616ece2d859	1771	u_char escaped;
mbed714	0:d616ece2d859	1772	SYS_ARCH_DECL_PROTECT(lev);
mbed714	0:d616ece2d859	1773
mbed714	0:d616ece2d859	1774	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
mbed714	0:d616ece2d859	1775	while (l-- > 0) {
mbed714	0:d616ece2d859	1776	curChar = *s++;
mbed714	0:d616ece2d859	1777
mbed714	0:d616ece2d859	1778	SYS_ARCH_PROTECT(lev);
mbed714	0:d616ece2d859	1779	escaped = ESCAPE_P(pcrx->inACCM, curChar);
mbed714	0:d616ece2d859	1780	SYS_ARCH_UNPROTECT(lev);
mbed714	0:d616ece2d859	1781	/* Handle special characters. */
mbed714	0:d616ece2d859	1782	if (escaped) {
mbed714	0:d616ece2d859	1783	/* Check for escape sequences. */
mbed714	0:d616ece2d859	1784	/* XXX Note that this does not handle an escaped 0x5d character which
mbed714	0:d616ece2d859	1785	* would appear as an escape character. Since this is an ASCII ']'
mbed714	0:d616ece2d859	1786	* and there is no reason that I know of to escape it, I won't complicate
mbed714	0:d616ece2d859	1787	* the code to handle this case. GLL */
mbed714	0:d616ece2d859	1788	if (curChar == PPP_ESCAPE) {
mbed714	0:d616ece2d859	1789	pcrx->inEscaped = 1;
mbed714	0:d616ece2d859	1790	/* Check for the flag character. */
mbed714	0:d616ece2d859	1791	} else if (curChar == PPP_FLAG) {
mbed714	0:d616ece2d859	1792	/* If this is just an extra flag character, ignore it. */
mbed714	0:d616ece2d859	1793	if (pcrx->inState <= PDADDRESS) {
mbed714	0:d616ece2d859	1794	/* ignore it */;
mbed714	0:d616ece2d859	1795	/* If we haven't received the packet header, drop what has come in. */
mbed714	0:d616ece2d859	1796	} else if (pcrx->inState < PDDATA) {
mbed714	0:d616ece2d859	1797	PPPDEBUG(LOG_WARNING,
mbed714	0:d616ece2d859	1798	("pppInProc[%d]: Dropping incomplete packet %d\n",
mbed714	0:d616ece2d859	1799	pcrx->pd, pcrx->inState));
mbed714	0:d616ece2d859	1800	LINK_STATS_INC(link.lenerr);
mbed714	0:d616ece2d859	1801	pppDrop(pcrx);
mbed714	0:d616ece2d859	1802	/* If the fcs is invalid, drop the packet. */
mbed714	0:d616ece2d859	1803	} else if (pcrx->inFCS != PPP_GOODFCS) {
mbed714	0:d616ece2d859	1804	PPPDEBUG(LOG_INFO,
mbed714	0:d616ece2d859	1805	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
mbed714	0:d616ece2d859	1806	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
mbed714	0:d616ece2d859	1807	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
mbed714	0:d616ece2d859	1808	LINK_STATS_INC(link.chkerr);
mbed714	0:d616ece2d859	1809	pppDrop(pcrx);
mbed714	0:d616ece2d859	1810	/* Otherwise it's a good packet so pass it on. */
mbed714	0:d616ece2d859	1811	} else {
mbed714	0:d616ece2d859	1812	/* Trim off the checksum. */
mbed714	0:d616ece2d859	1813	if(pcrx->inTail->len >= 2) {
mbed714	0:d616ece2d859	1814	pcrx->inTail->len -= 2;
mbed714	0:d616ece2d859	1815
mbed714	0:d616ece2d859	1816	pcrx->inTail->tot_len = pcrx->inTail->len;
mbed714	0:d616ece2d859	1817	if (pcrx->inTail != pcrx->inHead) {
mbed714	0:d616ece2d859	1818	pbuf_cat(pcrx->inHead, pcrx->inTail);
mbed714	0:d616ece2d859	1819	}
mbed714	0:d616ece2d859	1820	} else {
mbed714	0:d616ece2d859	1821	pcrx->inTail->tot_len = pcrx->inTail->len;
mbed714	0:d616ece2d859	1822	if (pcrx->inTail != pcrx->inHead) {
mbed714	0:d616ece2d859	1823	pbuf_cat(pcrx->inHead, pcrx->inTail);
mbed714	0:d616ece2d859	1824	}
mbed714	0:d616ece2d859	1825
mbed714	0:d616ece2d859	1826	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
mbed714	0:d616ece2d859	1827	}
mbed714	0:d616ece2d859	1828
mbed714	0:d616ece2d859	1829	/* Dispatch the packet thereby consuming it. */
mbed714	0:d616ece2d859	1830	#if PPP_INPROC_MULTITHREADED
mbed714	0:d616ece2d859	1831	if(tcpip_callback_with_block(pppInput, pcrx->inHead, 0) != ERR_OK) {
mbed714	0:d616ece2d859	1832	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
mbed714	0:d616ece2d859	1833	pbuf_free(pcrx->inHead);
mbed714	0:d616ece2d859	1834	LINK_STATS_INC(link.drop);
mbed714	0:d616ece2d859	1835	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
mbed714	0:d616ece2d859	1836	}
mbed714	0:d616ece2d859	1837	#else /* PPP_INPROC_MULTITHREADED */
mbed714	0:d616ece2d859	1838	pppInput(pcrx->inHead);
mbed714	0:d616ece2d859	1839	#endif /* PPP_INPROC_MULTITHREADED */
mbed714	0:d616ece2d859	1840	pcrx->inHead = NULL;
mbed714	0:d616ece2d859	1841	pcrx->inTail = NULL;
mbed714	0:d616ece2d859	1842	}
mbed714	0:d616ece2d859	1843
mbed714	0:d616ece2d859	1844	/* Prepare for a new packet. */
mbed714	0:d616ece2d859	1845	pcrx->inFCS = PPP_INITFCS;
mbed714	0:d616ece2d859	1846	pcrx->inState = PDADDRESS;
mbed714	0:d616ece2d859	1847	pcrx->inEscaped = 0;
mbed714	0:d616ece2d859	1848	/* Other characters are usually control characters that may have
mbed714	0:d616ece2d859	1849	* been inserted by the physical layer so here we just drop them. */
mbed714	0:d616ece2d859	1850	} else {
mbed714	0:d616ece2d859	1851	PPPDEBUG(LOG_WARNING,
mbed714	0:d616ece2d859	1852	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
mbed714	0:d616ece2d859	1853	}
mbed714	0:d616ece2d859	1854	/* Process other characters. */
mbed714	0:d616ece2d859	1855	} else {
mbed714	0:d616ece2d859	1856	/* Unencode escaped characters. */
mbed714	0:d616ece2d859	1857	if (pcrx->inEscaped) {
mbed714	0:d616ece2d859	1858	pcrx->inEscaped = 0;
mbed714	0:d616ece2d859	1859	curChar ^= PPP_TRANS;
mbed714	0:d616ece2d859	1860	}
mbed714	0:d616ece2d859	1861
mbed714	0:d616ece2d859	1862	/* Process character relative to current state. */
mbed714	0:d616ece2d859	1863	switch(pcrx->inState) {
mbed714	0:d616ece2d859	1864	case PDIDLE: /* Idle state - waiting. */
mbed714	0:d616ece2d859	1865	/* Drop the character if it's not 0xff
mbed714	0:d616ece2d859	1866	* we would have processed a flag character above. */
mbed714	0:d616ece2d859	1867	if (curChar != PPP_ALLSTATIONS) {
mbed714	0:d616ece2d859	1868	break;
mbed714	0:d616ece2d859	1869	}
mbed714	0:d616ece2d859	1870
mbed714	0:d616ece2d859	1871	/* Fall through */
mbed714	0:d616ece2d859	1872	case PDSTART: /* Process start flag. */
mbed714	0:d616ece2d859	1873	/* Prepare for a new packet. */
mbed714	0:d616ece2d859	1874	pcrx->inFCS = PPP_INITFCS;
mbed714	0:d616ece2d859	1875
mbed714	0:d616ece2d859	1876	/* Fall through */
mbed714	0:d616ece2d859	1877	case PDADDRESS: /* Process address field. */
mbed714	0:d616ece2d859	1878	if (curChar == PPP_ALLSTATIONS) {
mbed714	0:d616ece2d859	1879	pcrx->inState = PDCONTROL;
mbed714	0:d616ece2d859	1880	break;
mbed714	0:d616ece2d859	1881	}
mbed714	0:d616ece2d859	1882	/* Else assume compressed address and control fields so
mbed714	0:d616ece2d859	1883	* fall through to get the protocol... */
mbed714	0:d616ece2d859	1884	case PDCONTROL: /* Process control field. */
mbed714	0:d616ece2d859	1885	/* If we don't get a valid control code, restart. */
mbed714	0:d616ece2d859	1886	if (curChar == PPP_UI) {
mbed714	0:d616ece2d859	1887	pcrx->inState = PDPROTOCOL1;
mbed714	0:d616ece2d859	1888	break;
mbed714	0:d616ece2d859	1889	}
mbed714	0:d616ece2d859	1890	#if 0
mbed714	0:d616ece2d859	1891	else {
mbed714	0:d616ece2d859	1892	PPPDEBUG(LOG_WARNING,
mbed714	0:d616ece2d859	1893	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
mbed714	0:d616ece2d859	1894	pcrx->inState = PDSTART;
mbed714	0:d616ece2d859	1895	}
mbed714	0:d616ece2d859	1896	#endif
mbed714	0:d616ece2d859	1897	case PDPROTOCOL1: /* Process protocol field 1. */
mbed714	0:d616ece2d859	1898	/* If the lower bit is set, this is the end of the protocol
mbed714	0:d616ece2d859	1899	* field. */
mbed714	0:d616ece2d859	1900	if (curChar & 1) {
mbed714	0:d616ece2d859	1901	pcrx->inProtocol = curChar;
mbed714	0:d616ece2d859	1902	pcrx->inState = PDDATA;
mbed714	0:d616ece2d859	1903	} else {
mbed714	0:d616ece2d859	1904	pcrx->inProtocol = (u_int)curChar << 8;
mbed714	0:d616ece2d859	1905	pcrx->inState = PDPROTOCOL2;
mbed714	0:d616ece2d859	1906	}
mbed714	0:d616ece2d859	1907	break;
mbed714	0:d616ece2d859	1908	case PDPROTOCOL2: /* Process protocol field 2. */
mbed714	0:d616ece2d859	1909	pcrx->inProtocol \|= curChar;
mbed714	0:d616ece2d859	1910	pcrx->inState = PDDATA;
mbed714	0:d616ece2d859	1911	break;
mbed714	0:d616ece2d859	1912	case PDDATA: /* Process data byte. */
mbed714	0:d616ece2d859	1913	/* Make space to receive processed data. */
mbed714	0:d616ece2d859	1914	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
mbed714	0:d616ece2d859	1915	if(pcrx->inTail) {
mbed714	0:d616ece2d859	1916	pcrx->inTail->tot_len = pcrx->inTail->len;
mbed714	0:d616ece2d859	1917	if (pcrx->inTail != pcrx->inHead) {
mbed714	0:d616ece2d859	1918	pbuf_cat(pcrx->inHead, pcrx->inTail);
mbed714	0:d616ece2d859	1919	}
mbed714	0:d616ece2d859	1920	}
mbed714	0:d616ece2d859	1921	/* If we haven't started a packet, we need a packet header. */
mbed714	0:d616ece2d859	1922	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
mbed714	0:d616ece2d859	1923	if (nextNBuf == NULL) {
mbed714	0:d616ece2d859	1924	/* No free buffers. Drop the input packet and let the
mbed714	0:d616ece2d859	1925	* higher layers deal with it. Continue processing
mbed714	0:d616ece2d859	1926	* the received pbuf chain in case a new packet starts. */
mbed714	0:d616ece2d859	1927	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
mbed714	0:d616ece2d859	1928	LINK_STATS_INC(link.memerr);
mbed714	0:d616ece2d859	1929	pppDrop(pcrx);
mbed714	0:d616ece2d859	1930	pcrx->inState = PDSTART; /* Wait for flag sequence. */
mbed714	0:d616ece2d859	1931	break;
mbed714	0:d616ece2d859	1932	}
mbed714	0:d616ece2d859	1933	if (pcrx->inHead == NULL) {
mbed714	0:d616ece2d859	1934	struct pppInputHeader pih = (struct pppInputHeader )nextNBuf->payload;
mbed714	0:d616ece2d859	1935
mbed714	0:d616ece2d859	1936	pih->unit = pcrx->pd;
mbed714	0:d616ece2d859	1937	pih->proto = pcrx->inProtocol;
mbed714	0:d616ece2d859	1938
mbed714	0:d616ece2d859	1939	nextNBuf->len += sizeof(*pih);
mbed714	0:d616ece2d859	1940
mbed714	0:d616ece2d859	1941	pcrx->inHead = nextNBuf;
mbed714	0:d616ece2d859	1942	}
mbed714	0:d616ece2d859	1943	pcrx->inTail = nextNBuf;
mbed714	0:d616ece2d859	1944	}
mbed714	0:d616ece2d859	1945	/* Load character into buffer. */
mbed714	0:d616ece2d859	1946	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
mbed714	0:d616ece2d859	1947	break;
mbed714	0:d616ece2d859	1948	}
mbed714	0:d616ece2d859	1949
mbed714	0:d616ece2d859	1950	/* update the frame check sequence number. */
mbed714	0:d616ece2d859	1951	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
mbed714	0:d616ece2d859	1952	}
mbed714	0:d616ece2d859	1953	} /* while (l-- > 0), all bytes processed */
mbed714	0:d616ece2d859	1954
mbed714	0:d616ece2d859	1955	avRandomize();
mbed714	0:d616ece2d859	1956	}
mbed714	0:d616ece2d859	1957	#endif /* PPPOS_SUPPORT */
mbed714	0:d616ece2d859	1958
mbed714	0:d616ece2d859	1959	#if PPPOE_SUPPORT
mbed714	0:d616ece2d859	1960	void
mbed714	0:d616ece2d859	1961	pppInProcOverEthernet(int pd, struct pbuf *pb)
mbed714	0:d616ece2d859	1962	{
mbed714	0:d616ece2d859	1963	struct pppInputHeader *pih;
mbed714	0:d616ece2d859	1964	u16_t inProtocol;
mbed714	0:d616ece2d859	1965
mbed714	0:d616ece2d859	1966	if(pb->len < sizeof(inProtocol)) {
mbed714	0:d616ece2d859	1967	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
mbed714	0:d616ece2d859	1968	goto drop;
mbed714	0:d616ece2d859	1969	}
mbed714	0:d616ece2d859	1970
mbed714	0:d616ece2d859	1971	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
mbed714	0:d616ece2d859	1972
mbed714	0:d616ece2d859	1973	/* make room for pppInputHeader - should not fail */
mbed714	0:d616ece2d859	1974	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
mbed714	0:d616ece2d859	1975	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
mbed714	0:d616ece2d859	1976	goto drop;
mbed714	0:d616ece2d859	1977	}
mbed714	0:d616ece2d859	1978
mbed714	0:d616ece2d859	1979	pih = pb->payload;
mbed714	0:d616ece2d859	1980
mbed714	0:d616ece2d859	1981	pih->unit = pd;
mbed714	0:d616ece2d859	1982	pih->proto = inProtocol;
mbed714	0:d616ece2d859	1983
mbed714	0:d616ece2d859	1984	/* Dispatch the packet thereby consuming it. */
mbed714	0:d616ece2d859	1985	pppInput(pb);
mbed714	0:d616ece2d859	1986	return;
mbed714	0:d616ece2d859	1987
mbed714	0:d616ece2d859	1988	drop:
mbed714	0:d616ece2d859	1989	LINK_STATS_INC(link.drop);
mbed714	0:d616ece2d859	1990	snmp_inc_ifindiscards(&pppControl[pd].netif);
mbed714	0:d616ece2d859	1991	pbuf_free(pb);
mbed714	0:d616ece2d859	1992	return;
mbed714	0:d616ece2d859	1993	}
mbed714	0:d616ece2d859	1994	#endif /* PPPOE_SUPPORT */
mbed714	0:d616ece2d859	1995
mbed714	0:d616ece2d859	1996	#if LWIP_NETIF_STATUS_CALLBACK
mbed714	0:d616ece2d859	1997	/** Set the status callback of a PPP's netif
mbed714	0:d616ece2d859	1998	*
mbed714	0:d616ece2d859	1999	* @param pd The PPP descriptor returned by pppOpen()
mbed714	0:d616ece2d859	2000	* @param status_callback pointer to the status callback function
mbed714	0:d616ece2d859	2001	*
mbed714	0:d616ece2d859	2002	* @see netif_set_status_callback
mbed714	0:d616ece2d859	2003	*/
mbed714	0:d616ece2d859	2004	void
mbed714	0:d616ece2d859	2005	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
mbed714	0:d616ece2d859	2006	{
mbed714	0:d616ece2d859	2007	netif_set_status_callback(&pppControl[pd].netif, status_callback);
mbed714	0:d616ece2d859	2008	}
mbed714	0:d616ece2d859	2009	#endif /* LWIP_NETIF_STATUS_CALLBACK */
mbed714	0:d616ece2d859	2010
mbed714	0:d616ece2d859	2011	#if LWIP_NETIF_LINK_CALLBACK
mbed714	0:d616ece2d859	2012	/** Set the link callback of a PPP's netif
mbed714	0:d616ece2d859	2013	*
mbed714	0:d616ece2d859	2014	* @param pd The PPP descriptor returned by pppOpen()
mbed714	0:d616ece2d859	2015	* @param link_callback pointer to the link callback function
mbed714	0:d616ece2d859	2016	*
mbed714	0:d616ece2d859	2017	* @see netif_set_link_callback
mbed714	0:d616ece2d859	2018	*/
mbed714	0:d616ece2d859	2019	void
mbed714	0:d616ece2d859	2020	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
mbed714	0:d616ece2d859	2021	{
mbed714	0:d616ece2d859	2022	netif_set_link_callback(&pppControl[pd].netif, link_callback);
mbed714	0:d616ece2d859	2023	}
mbed714	0:d616ece2d859	2024	#endif /* LWIP_NETIF_LINK_CALLBACK */
mbed714	0:d616ece2d859	2025
mbed714	0:d616ece2d859	2026	#endif /* PPP_SUPPORT */

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Type:	Library
Created:	18 Sep 2010
Imports:	1
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	1

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lwip/netif/ppp/ppp.c@0:d616ece2d859, 2010-09-18 (annotated)

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