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NetTribute library with debug turned on in FShandler Donatien Garner -> Segundo Equipo -> this version

lwip/netif/ppp/ppp.c@0:281d6ff68967, 2010-11-19 (annotated)

Committer:: hexley
Date:: Fri Nov 19 01:54:45 2010 +0000
Revision:: 0:281d6ff68967

Who changed what in which revision?

User	Revision	Line number	New contents of line
hexley	0:281d6ff68967	1	/*****************************************************************************
hexley	0:281d6ff68967	2	* ppp.c - Network Point to Point Protocol program file.
hexley	0:281d6ff68967	3	*
hexley	0:281d6ff68967	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
hexley	0:281d6ff68967	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
hexley	0:281d6ff68967	6	*
hexley	0:281d6ff68967	7	* The authors hereby grant permission to use, copy, modify, distribute,
hexley	0:281d6ff68967	8	* and license this software and its documentation for any purpose, provided
hexley	0:281d6ff68967	9	* that existing copyright notices are retained in all copies and that this
hexley	0:281d6ff68967	10	* notice and the following disclaimer are included verbatim in any
hexley	0:281d6ff68967	11	* distributions. No written agreement, license, or royalty fee is required
hexley	0:281d6ff68967	12	* for any of the authorized uses.
hexley	0:281d6ff68967	13	*
hexley	0:281d6ff68967	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
hexley	0:281d6ff68967	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
hexley	0:281d6ff68967	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
hexley	0:281d6ff68967	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
hexley	0:281d6ff68967	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
hexley	0:281d6ff68967	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
hexley	0:281d6ff68967	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
hexley	0:281d6ff68967	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
hexley	0:281d6ff68967	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
hexley	0:281d6ff68967	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
hexley	0:281d6ff68967	24	*
hexley	0:281d6ff68967	25	******************************************************************************
hexley	0:281d6ff68967	26	* REVISION HISTORY
hexley	0:281d6ff68967	27	*
hexley	0:281d6ff68967	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
hexley	0:281d6ff68967	29	* Ported to lwIP.
hexley	0:281d6ff68967	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
hexley	0:281d6ff68967	31	* Original.
hexley	0:281d6ff68967	32	*****************************************************************************/
hexley	0:281d6ff68967	33
hexley	0:281d6ff68967	34	/*
hexley	0:281d6ff68967	35	* ppp_defs.h - PPP definitions.
hexley	0:281d6ff68967	36	*
hexley	0:281d6ff68967	37	* if_pppvar.h - private structures and declarations for PPP.
hexley	0:281d6ff68967	38	*
hexley	0:281d6ff68967	39	* Copyright (c) 1994 The Australian National University.
hexley	0:281d6ff68967	40	* All rights reserved.
hexley	0:281d6ff68967	41	*
hexley	0:281d6ff68967	42	* Permission to use, copy, modify, and distribute this software and its
hexley	0:281d6ff68967	43	* documentation is hereby granted, provided that the above copyright
hexley	0:281d6ff68967	44	* notice appears in all copies. This software is provided without any
hexley	0:281d6ff68967	45	* warranty, express or implied. The Australian National University
hexley	0:281d6ff68967	46	* makes no representations about the suitability of this software for
hexley	0:281d6ff68967	47	* any purpose.
hexley	0:281d6ff68967	48	*
hexley	0:281d6ff68967	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
hexley	0:281d6ff68967	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
hexley	0:281d6ff68967	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
hexley	0:281d6ff68967	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
hexley	0:281d6ff68967	53	* OF SUCH DAMAGE.
hexley	0:281d6ff68967	54	*
hexley	0:281d6ff68967	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
hexley	0:281d6ff68967	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
hexley	0:281d6ff68967	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
hexley	0:281d6ff68967	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
hexley	0:281d6ff68967	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
hexley	0:281d6ff68967	60	* OR MODIFICATIONS.
hexley	0:281d6ff68967	61	*/
hexley	0:281d6ff68967	62
hexley	0:281d6ff68967	63	/*
hexley	0:281d6ff68967	64	* if_ppp.h - Point-to-Point Protocol definitions.
hexley	0:281d6ff68967	65	*
hexley	0:281d6ff68967	66	* Copyright (c) 1989 Carnegie Mellon University.
hexley	0:281d6ff68967	67	* All rights reserved.
hexley	0:281d6ff68967	68	*
hexley	0:281d6ff68967	69	* Redistribution and use in source and binary forms are permitted
hexley	0:281d6ff68967	70	* provided that the above copyright notice and this paragraph are
hexley	0:281d6ff68967	71	* duplicated in all such forms and that any documentation,
hexley	0:281d6ff68967	72	* advertising materials, and other materials related to such
hexley	0:281d6ff68967	73	* distribution and use acknowledge that the software was developed
hexley	0:281d6ff68967	74	* by Carnegie Mellon University. The name of the
hexley	0:281d6ff68967	75	* University may not be used to endorse or promote products derived
hexley	0:281d6ff68967	76	* from this software without specific prior written permission.
hexley	0:281d6ff68967	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
hexley	0:281d6ff68967	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
hexley	0:281d6ff68967	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
hexley	0:281d6ff68967	80	*/
hexley	0:281d6ff68967	81
hexley	0:281d6ff68967	82	#include "lwip/opt.h"
hexley	0:281d6ff68967	83
hexley	0:281d6ff68967	84	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
hexley	0:281d6ff68967	85
hexley	0:281d6ff68967	86	#include "lwip/ip.h" /* for ip_input() */
hexley	0:281d6ff68967	87
hexley	0:281d6ff68967	88	#include "ppp.h"
hexley	0:281d6ff68967	89	#include "pppdebug.h"
hexley	0:281d6ff68967	90
hexley	0:281d6ff68967	91	#include "randm.h"
hexley	0:281d6ff68967	92	#include "fsm.h"
hexley	0:281d6ff68967	93	#if PAP_SUPPORT
hexley	0:281d6ff68967	94	#include "pap.h"
hexley	0:281d6ff68967	95	#endif /* PAP_SUPPORT */
hexley	0:281d6ff68967	96	#if CHAP_SUPPORT
hexley	0:281d6ff68967	97	#include "chap.h"
hexley	0:281d6ff68967	98	#endif /* CHAP_SUPPORT */
hexley	0:281d6ff68967	99	#include "ipcp.h"
hexley	0:281d6ff68967	100	#include "lcp.h"
hexley	0:281d6ff68967	101	#include "magic.h"
hexley	0:281d6ff68967	102	#include "auth.h"
hexley	0:281d6ff68967	103	#if VJ_SUPPORT
hexley	0:281d6ff68967	104	#include "vj.h"
hexley	0:281d6ff68967	105	#endif /* VJ_SUPPORT */
hexley	0:281d6ff68967	106	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	107	#include "netif/ppp_oe.h"
hexley	0:281d6ff68967	108	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	109
hexley	0:281d6ff68967	110	#include "lwip/tcpip.h"
hexley	0:281d6ff68967	111	#include "lwip/api.h"
hexley	0:281d6ff68967	112	#include "lwip/snmp.h"
hexley	0:281d6ff68967	113
hexley	0:281d6ff68967	114	#include <string.h>
hexley	0:281d6ff68967	115
hexley	0:281d6ff68967	116	/*************************/
hexley	0:281d6ff68967	117	/* LOCAL DEFINITIONS */
hexley	0:281d6ff68967	118	/*************************/
hexley	0:281d6ff68967	119
hexley	0:281d6ff68967	120	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
hexley	0:281d6ff68967	121	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
hexley	0:281d6ff68967	122	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
hexley	0:281d6ff68967	123	*/
hexley	0:281d6ff68967	124	#ifndef PPP_INPROC_MULTITHREADED
hexley	0:281d6ff68967	125	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
hexley	0:281d6ff68967	126	#endif
hexley	0:281d6ff68967	127
hexley	0:281d6ff68967	128	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
hexley	0:281d6ff68967	129	* Default is 0: call pppos_input() for received raw characters, charcater
hexley	0:281d6ff68967	130	* reception is up to the port */
hexley	0:281d6ff68967	131	#ifndef PPP_INPROC_OWNTHREAD
hexley	0:281d6ff68967	132	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
hexley	0:281d6ff68967	133	#endif
hexley	0:281d6ff68967	134
hexley	0:281d6ff68967	135	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
hexley	0:281d6ff68967	136	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
hexley	0:281d6ff68967	137	#endif
hexley	0:281d6ff68967	138
hexley	0:281d6ff68967	139	/*
hexley	0:281d6ff68967	140	* The basic PPP frame.
hexley	0:281d6ff68967	141	*/
hexley	0:281d6ff68967	142	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
hexley	0:281d6ff68967	143	#define PPP_CONTROL(p) (((u_char *)(p))[1])
hexley	0:281d6ff68967	144	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
hexley	0:281d6ff68967	145
hexley	0:281d6ff68967	146	/* PPP packet parser states. Current state indicates operation yet to be
hexley	0:281d6ff68967	147	* completed. */
hexley	0:281d6ff68967	148	typedef enum {
hexley	0:281d6ff68967	149	PDIDLE = 0, /* Idle state - waiting. */
hexley	0:281d6ff68967	150	PDSTART, /* Process start flag. */
hexley	0:281d6ff68967	151	PDADDRESS, /* Process address field. */
hexley	0:281d6ff68967	152	PDCONTROL, /* Process control field. */
hexley	0:281d6ff68967	153	PDPROTOCOL1, /* Process protocol field 1. */
hexley	0:281d6ff68967	154	PDPROTOCOL2, /* Process protocol field 2. */
hexley	0:281d6ff68967	155	PDDATA /* Process data byte. */
hexley	0:281d6ff68967	156	} PPPDevStates;
hexley	0:281d6ff68967	157
hexley	0:281d6ff68967	158	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
hexley	0:281d6ff68967	159
hexley	0:281d6ff68967	160	/************************/
hexley	0:281d6ff68967	161	/* LOCAL DATA TYPES */
hexley	0:281d6ff68967	162	/************************/
hexley	0:281d6ff68967	163
hexley	0:281d6ff68967	164	/** RX buffer size: this may be configured smaller! */
hexley	0:281d6ff68967	165	#ifndef PPPOS_RX_BUFSIZE
hexley	0:281d6ff68967	166	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
hexley	0:281d6ff68967	167	#endif
hexley	0:281d6ff68967	168
hexley	0:281d6ff68967	169	typedef struct PPPControlRx_s {
hexley	0:281d6ff68967	170	/** unit number / ppp descriptor */
hexley	0:281d6ff68967	171	int pd;
hexley	0:281d6ff68967	172	/** the rx file descriptor */
hexley	0:281d6ff68967	173	sio_fd_t fd;
hexley	0:281d6ff68967	174	/** receive buffer - encoded data is stored here */
hexley	0:281d6ff68967	175	u_char rxbuf[PPPOS_RX_BUFSIZE];
hexley	0:281d6ff68967	176
hexley	0:281d6ff68967	177	/* The input packet. */
hexley	0:281d6ff68967	178	struct pbuf inHead, inTail;
hexley	0:281d6ff68967	179
hexley	0:281d6ff68967	180	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	181	u16_t inProtocol; /* The input protocol code. */
hexley	0:281d6ff68967	182	u16_t inFCS; /* Input Frame Check Sequence value. */
hexley	0:281d6ff68967	183	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	184	PPPDevStates inState; /* The input process state. */
hexley	0:281d6ff68967	185	char inEscaped; /* Escape next character. */
hexley	0:281d6ff68967	186	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
hexley	0:281d6ff68967	187	} PPPControlRx;
hexley	0:281d6ff68967	188
hexley	0:281d6ff68967	189	/*
hexley	0:281d6ff68967	190	* PPP interface control block.
hexley	0:281d6ff68967	191	*/
hexley	0:281d6ff68967	192	typedef struct PPPControl_s {
hexley	0:281d6ff68967	193	PPPControlRx rx;
hexley	0:281d6ff68967	194	char openFlag; /* True when in use. */
hexley	0:281d6ff68967	195	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	196	struct netif *ethif;
hexley	0:281d6ff68967	197	struct pppoe_softc *pppoe_sc;
hexley	0:281d6ff68967	198	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	199	int if_up; /* True when the interface is up. */
hexley	0:281d6ff68967	200	int errCode; /* Code indicating why interface is down. */
hexley	0:281d6ff68967	201	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	202	sio_fd_t fd; /* File device ID of port. */
hexley	0:281d6ff68967	203	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	204	u16_t mtu; /* Peer's mru */
hexley	0:281d6ff68967	205	int pcomp; /* Does peer accept protocol compression? */
hexley	0:281d6ff68967	206	int accomp; /* Does peer accept addr/ctl compression? */
hexley	0:281d6ff68967	207	u_long lastXMit; /* Time of last transmission. */
hexley	0:281d6ff68967	208	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
hexley	0:281d6ff68967	209	#if PPPOS_SUPPORT && VJ_SUPPORT
hexley	0:281d6ff68967	210	int vjEnabled; /* Flag indicating VJ compression enabled. */
hexley	0:281d6ff68967	211	struct vjcompress vjComp; /* Van Jacobson compression header. */
hexley	0:281d6ff68967	212	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
hexley	0:281d6ff68967	213
hexley	0:281d6ff68967	214	struct netif netif;
hexley	0:281d6ff68967	215
hexley	0:281d6ff68967	216	struct ppp_addrs addrs;
hexley	0:281d6ff68967	217
hexley	0:281d6ff68967	218	void (linkStatusCB)(void ctx, int errCode, void *arg);
hexley	0:281d6ff68967	219	void *linkStatusCtx;
hexley	0:281d6ff68967	220
hexley	0:281d6ff68967	221	} PPPControl;
hexley	0:281d6ff68967	222
hexley	0:281d6ff68967	223
hexley	0:281d6ff68967	224	/*
hexley	0:281d6ff68967	225	* Ioctl definitions.
hexley	0:281d6ff68967	226	*/
hexley	0:281d6ff68967	227
hexley	0:281d6ff68967	228	struct npioctl {
hexley	0:281d6ff68967	229	int protocol; /* PPP procotol, e.g. PPP_IP */
hexley	0:281d6ff68967	230	enum NPmode mode;
hexley	0:281d6ff68967	231	};
hexley	0:281d6ff68967	232
hexley	0:281d6ff68967	233
hexley	0:281d6ff68967	234
hexley	0:281d6ff68967	235	/***********************************/
hexley	0:281d6ff68967	236	/* LOCAL FUNCTION DECLARATIONS */
hexley	0:281d6ff68967	237	/***********************************/
hexley	0:281d6ff68967	238	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	239	#if PPP_INPROC_OWNTHREAD
hexley	0:281d6ff68967	240	static void pppInputThread(void *arg);
hexley	0:281d6ff68967	241	#endif /* PPP_INPROC_OWNTHREAD */
hexley	0:281d6ff68967	242	static void pppDrop(PPPControlRx *pcrx);
hexley	0:281d6ff68967	243	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
hexley	0:281d6ff68967	244	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	245
hexley	0:281d6ff68967	246
hexley	0:281d6ff68967	247	/******************************/
hexley	0:281d6ff68967	248	/* PUBLIC DATA STRUCTURES */
hexley	0:281d6ff68967	249	/******************************/
hexley	0:281d6ff68967	250	u_long subnetMask;
hexley	0:281d6ff68967	251
hexley	0:281d6ff68967	252	static PPPControl pppControl[NUM_PPP] MEM_POSITION; /* The PPP interface control blocks. */
hexley	0:281d6ff68967	253
hexley	0:281d6ff68967	254	/*
hexley	0:281d6ff68967	255	* PPP Data Link Layer "protocol" table.
hexley	0:281d6ff68967	256	* One entry per supported protocol.
hexley	0:281d6ff68967	257	* The last entry must be NULL.
hexley	0:281d6ff68967	258	*/
hexley	0:281d6ff68967	259	struct protent *ppp_protocols[] = {
hexley	0:281d6ff68967	260	&lcp_protent,
hexley	0:281d6ff68967	261	#if PAP_SUPPORT
hexley	0:281d6ff68967	262	&pap_protent,
hexley	0:281d6ff68967	263	#endif /* PAP_SUPPORT */
hexley	0:281d6ff68967	264	#if CHAP_SUPPORT
hexley	0:281d6ff68967	265	&chap_protent,
hexley	0:281d6ff68967	266	#endif /* CHAP_SUPPORT */
hexley	0:281d6ff68967	267	#if CBCP_SUPPORT
hexley	0:281d6ff68967	268	&cbcp_protent,
hexley	0:281d6ff68967	269	#endif /* CBCP_SUPPORT */
hexley	0:281d6ff68967	270	&ipcp_protent,
hexley	0:281d6ff68967	271	#if CCP_SUPPORT
hexley	0:281d6ff68967	272	&ccp_protent,
hexley	0:281d6ff68967	273	#endif /* CCP_SUPPORT */
hexley	0:281d6ff68967	274	NULL
hexley	0:281d6ff68967	275	};
hexley	0:281d6ff68967	276
hexley	0:281d6ff68967	277
hexley	0:281d6ff68967	278	/*
hexley	0:281d6ff68967	279	* Buffers for outgoing packets. This must be accessed only from the appropriate
hexley	0:281d6ff68967	280	* PPP task so that it doesn't need to be protected to avoid collisions.
hexley	0:281d6ff68967	281	*/
hexley	0:281d6ff68967	282	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] MEM_POSITION;
hexley	0:281d6ff68967	283
hexley	0:281d6ff68967	284
hexley	0:281d6ff68967	285	/*****************************/
hexley	0:281d6ff68967	286	/* LOCAL DATA STRUCTURES */
hexley	0:281d6ff68967	287	/*****************************/
hexley	0:281d6ff68967	288
hexley	0:281d6ff68967	289	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	290	/*
hexley	0:281d6ff68967	291	* FCS lookup table as calculated by genfcstab.
hexley	0:281d6ff68967	292	* @todo: smaller, slower implementation for lower memory footprint?
hexley	0:281d6ff68967	293	*/
hexley	0:281d6ff68967	294	static const u_short fcstab[256] = {
hexley	0:281d6ff68967	295	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
hexley	0:281d6ff68967	296	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
hexley	0:281d6ff68967	297	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
hexley	0:281d6ff68967	298	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
hexley	0:281d6ff68967	299	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
hexley	0:281d6ff68967	300	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
hexley	0:281d6ff68967	301	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
hexley	0:281d6ff68967	302	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
hexley	0:281d6ff68967	303	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
hexley	0:281d6ff68967	304	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
hexley	0:281d6ff68967	305	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
hexley	0:281d6ff68967	306	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
hexley	0:281d6ff68967	307	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
hexley	0:281d6ff68967	308	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
hexley	0:281d6ff68967	309	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
hexley	0:281d6ff68967	310	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
hexley	0:281d6ff68967	311	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
hexley	0:281d6ff68967	312	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
hexley	0:281d6ff68967	313	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
hexley	0:281d6ff68967	314	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
hexley	0:281d6ff68967	315	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
hexley	0:281d6ff68967	316	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
hexley	0:281d6ff68967	317	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
hexley	0:281d6ff68967	318	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
hexley	0:281d6ff68967	319	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
hexley	0:281d6ff68967	320	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
hexley	0:281d6ff68967	321	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
hexley	0:281d6ff68967	322	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
hexley	0:281d6ff68967	323	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
hexley	0:281d6ff68967	324	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
hexley	0:281d6ff68967	325	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
hexley	0:281d6ff68967	326	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
hexley	0:281d6ff68967	327	};
hexley	0:281d6ff68967	328
hexley	0:281d6ff68967	329	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
hexley	0:281d6ff68967	330	* to select the specific bit for a character. */
hexley	0:281d6ff68967	331	static u_char pppACCMMask[] = {
hexley	0:281d6ff68967	332	0x01,
hexley	0:281d6ff68967	333	0x02,
hexley	0:281d6ff68967	334	0x04,
hexley	0:281d6ff68967	335	0x08,
hexley	0:281d6ff68967	336	0x10,
hexley	0:281d6ff68967	337	0x20,
hexley	0:281d6ff68967	338	0x40,
hexley	0:281d6ff68967	339	0x80
hexley	0:281d6ff68967	340	};
hexley	0:281d6ff68967	341
hexley	0:281d6ff68967	342	/** Wake up the task blocked in reading from serial line (if any) */
hexley	0:281d6ff68967	343	static void
hexley	0:281d6ff68967	344	pppRecvWakeup(int pd)
hexley	0:281d6ff68967	345	{
hexley	0:281d6ff68967	346	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
hexley	0:281d6ff68967	347	sio_read_abort(pppControl[pd].fd);
hexley	0:281d6ff68967	348	}
hexley	0:281d6ff68967	349	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	350
hexley	0:281d6ff68967	351	void
hexley	0:281d6ff68967	352	pppLinkTerminated(int pd)
hexley	0:281d6ff68967	353	{
hexley	0:281d6ff68967	354	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
hexley	0:281d6ff68967	355
hexley	0:281d6ff68967	356	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	357	if (pppControl[pd].ethif) {
hexley	0:281d6ff68967	358	pppoe_disconnect(pppControl[pd].pppoe_sc);
hexley	0:281d6ff68967	359	} else
hexley	0:281d6ff68967	360	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	361	{
hexley	0:281d6ff68967	362	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	363	PPPControl* pc;
hexley	0:281d6ff68967	364	pppRecvWakeup(pd);
hexley	0:281d6ff68967	365	pc = &pppControl[pd];
hexley	0:281d6ff68967	366	pppDrop(&pc->rx); /* bug fix #17726 */
hexley	0:281d6ff68967	367
hexley	0:281d6ff68967	368	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
hexley	0:281d6ff68967	369	if (pc->linkStatusCB) {
hexley	0:281d6ff68967	370	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
hexley	0:281d6ff68967	371	}
hexley	0:281d6ff68967	372
hexley	0:281d6ff68967	373	pc->openFlag = 0;/**/
hexley	0:281d6ff68967	374	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	375	}
hexley	0:281d6ff68967	376	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
hexley	0:281d6ff68967	377	}
hexley	0:281d6ff68967	378
hexley	0:281d6ff68967	379	void
hexley	0:281d6ff68967	380	pppLinkDown(int pd)
hexley	0:281d6ff68967	381	{
hexley	0:281d6ff68967	382	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
hexley	0:281d6ff68967	383
hexley	0:281d6ff68967	384	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	385	if (pppControl[pd].ethif) {
hexley	0:281d6ff68967	386	pppoe_disconnect(pppControl[pd].pppoe_sc);
hexley	0:281d6ff68967	387	} else
hexley	0:281d6ff68967	388	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	389	{
hexley	0:281d6ff68967	390	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	391	pppRecvWakeup(pd);
hexley	0:281d6ff68967	392	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	393	}
hexley	0:281d6ff68967	394	}
hexley	0:281d6ff68967	395
hexley	0:281d6ff68967	396	/** Initiate LCP open request */
hexley	0:281d6ff68967	397	static void
hexley	0:281d6ff68967	398	pppStart(int pd)
hexley	0:281d6ff68967	399	{
hexley	0:281d6ff68967	400	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
hexley	0:281d6ff68967	401	lcp_lowerup(pd);
hexley	0:281d6ff68967	402	lcp_open(pd); /* Start protocol */
hexley	0:281d6ff68967	403	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
hexley	0:281d6ff68967	404	}
hexley	0:281d6ff68967	405
hexley	0:281d6ff68967	406	/** LCP close request */
hexley	0:281d6ff68967	407	static void
hexley	0:281d6ff68967	408	pppStop(int pd)
hexley	0:281d6ff68967	409	{
hexley	0:281d6ff68967	410	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
hexley	0:281d6ff68967	411	lcp_close(pd, "User request");
hexley	0:281d6ff68967	412	}
hexley	0:281d6ff68967	413
hexley	0:281d6ff68967	414	/** Called when carrier/link is lost */
hexley	0:281d6ff68967	415	static void
hexley	0:281d6ff68967	416	pppHup(int pd)
hexley	0:281d6ff68967	417	{
hexley	0:281d6ff68967	418	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
hexley	0:281d6ff68967	419	lcp_lowerdown(pd);
hexley	0:281d6ff68967	420	link_terminated(pd);
hexley	0:281d6ff68967	421	}
hexley	0:281d6ff68967	422
hexley	0:281d6ff68967	423	/***********************************/
hexley	0:281d6ff68967	424	/* PUBLIC FUNCTION DEFINITIONS */
hexley	0:281d6ff68967	425	/***********************************/
hexley	0:281d6ff68967	426	/* Initialize the PPP subsystem. */
hexley	0:281d6ff68967	427
hexley	0:281d6ff68967	428	struct ppp_settings ppp_settings;
hexley	0:281d6ff68967	429
hexley	0:281d6ff68967	430	void
hexley	0:281d6ff68967	431	pppInit(void)
hexley	0:281d6ff68967	432	{
hexley	0:281d6ff68967	433	struct protent *protp;
hexley	0:281d6ff68967	434	int i, j;
hexley	0:281d6ff68967	435
hexley	0:281d6ff68967	436	memset(&ppp_settings, 0, sizeof(ppp_settings));
hexley	0:281d6ff68967	437	ppp_settings.usepeerdns = 1;
hexley	0:281d6ff68967	438	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
hexley	0:281d6ff68967	439
hexley	0:281d6ff68967	440	magicInit();
hexley	0:281d6ff68967	441
hexley	0:281d6ff68967	442	subnetMask = PP_HTONL(0xffffff00);
hexley	0:281d6ff68967	443
hexley	0:281d6ff68967	444	for (i = 0; i < NUM_PPP; i++) {
hexley	0:281d6ff68967	445	/* Initialize each protocol to the standard option set. */
hexley	0:281d6ff68967	446	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
hexley	0:281d6ff68967	447	(*protp->init)(i);
hexley	0:281d6ff68967	448	}
hexley	0:281d6ff68967	449	}
hexley	0:281d6ff68967	450	}
hexley	0:281d6ff68967	451
hexley	0:281d6ff68967	452	void
hexley	0:281d6ff68967	453	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
hexley	0:281d6ff68967	454	{
hexley	0:281d6ff68967	455	switch(authType) {
hexley	0:281d6ff68967	456	case PPPAUTHTYPE_NONE:
hexley	0:281d6ff68967	457	default:
hexley	0:281d6ff68967	458	#ifdef LWIP_PPP_STRICT_PAP_REJECT
hexley	0:281d6ff68967	459	ppp_settings.refuse_pap = 1;
hexley	0:281d6ff68967	460	#else /* LWIP_PPP_STRICT_PAP_REJECT */
hexley	0:281d6ff68967	461	/* some providers request pap and accept an empty login/pw */
hexley	0:281d6ff68967	462	ppp_settings.refuse_pap = 0;
hexley	0:281d6ff68967	463	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
hexley	0:281d6ff68967	464	ppp_settings.refuse_chap = 1;
hexley	0:281d6ff68967	465	break;
hexley	0:281d6ff68967	466
hexley	0:281d6ff68967	467	case PPPAUTHTYPE_ANY:
hexley	0:281d6ff68967	468	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
hexley	0:281d6ff68967	469	* RFC 1994 says:
hexley	0:281d6ff68967	470	*
hexley	0:281d6ff68967	471	* In practice, within or associated with each PPP server, there is a
hexley	0:281d6ff68967	472	* database which associates "user" names with authentication
hexley	0:281d6ff68967	473	* information ("secrets"). It is not anticipated that a particular
hexley	0:281d6ff68967	474	* named user would be authenticated by multiple methods. This would
hexley	0:281d6ff68967	475	* make the user vulnerable to attacks which negotiate the least secure
hexley	0:281d6ff68967	476	* method from among a set (such as PAP rather than CHAP). If the same
hexley	0:281d6ff68967	477	* secret was used, PAP would reveal the secret to be used later with
hexley	0:281d6ff68967	478	* CHAP.
hexley	0:281d6ff68967	479	*
hexley	0:281d6ff68967	480	* Instead, for each user name there should be an indication of exactly
hexley	0:281d6ff68967	481	* one method used to authenticate that user name. If a user needs to
hexley	0:281d6ff68967	482	* make use of different authentication methods under different
hexley	0:281d6ff68967	483	* circumstances, then distinct user names SHOULD be employed, each of
hexley	0:281d6ff68967	484	* which identifies exactly one authentication method.
hexley	0:281d6ff68967	485	*
hexley	0:281d6ff68967	486	*/
hexley	0:281d6ff68967	487	ppp_settings.refuse_pap = 0;
hexley	0:281d6ff68967	488	ppp_settings.refuse_chap = 0;
hexley	0:281d6ff68967	489	break;
hexley	0:281d6ff68967	490
hexley	0:281d6ff68967	491	case PPPAUTHTYPE_PAP:
hexley	0:281d6ff68967	492	ppp_settings.refuse_pap = 0;
hexley	0:281d6ff68967	493	ppp_settings.refuse_chap = 1;
hexley	0:281d6ff68967	494	break;
hexley	0:281d6ff68967	495
hexley	0:281d6ff68967	496	case PPPAUTHTYPE_CHAP:
hexley	0:281d6ff68967	497	ppp_settings.refuse_pap = 1;
hexley	0:281d6ff68967	498	ppp_settings.refuse_chap = 0;
hexley	0:281d6ff68967	499	break;
hexley	0:281d6ff68967	500	}
hexley	0:281d6ff68967	501
hexley	0:281d6ff68967	502	if(user) {
hexley	0:281d6ff68967	503	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
hexley	0:281d6ff68967	504	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
hexley	0:281d6ff68967	505	} else {
hexley	0:281d6ff68967	506	ppp_settings.user[0] = '\0';
hexley	0:281d6ff68967	507	}
hexley	0:281d6ff68967	508
hexley	0:281d6ff68967	509	if(passwd) {
hexley	0:281d6ff68967	510	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
hexley	0:281d6ff68967	511	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
hexley	0:281d6ff68967	512	} else {
hexley	0:281d6ff68967	513	ppp_settings.passwd[0] = '\0';
hexley	0:281d6ff68967	514	}
hexley	0:281d6ff68967	515	}
hexley	0:281d6ff68967	516
hexley	0:281d6ff68967	517	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	518	/** Open a new PPP connection using the given I/O device.
hexley	0:281d6ff68967	519	* This initializes the PPP control block but does not
hexley	0:281d6ff68967	520	* attempt to negotiate the LCP session. If this port
hexley	0:281d6ff68967	521	* connects to a modem, the modem connection must be
hexley	0:281d6ff68967	522	* established before calling this.
hexley	0:281d6ff68967	523	* Return a new PPP connection descriptor on success or
hexley	0:281d6ff68967	524	* an error code (negative) on failure.
hexley	0:281d6ff68967	525	*
hexley	0:281d6ff68967	526	* pppOpen() is directly defined to this function.
hexley	0:281d6ff68967	527	*/
hexley	0:281d6ff68967	528	int
hexley	0:281d6ff68967	529	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
hexley	0:281d6ff68967	530	{
hexley	0:281d6ff68967	531	PPPControl *pc;
hexley	0:281d6ff68967	532	int pd;
hexley	0:281d6ff68967	533
hexley	0:281d6ff68967	534	if (linkStatusCB == NULL) {
hexley	0:281d6ff68967	535	/* PPP is single-threaded: without a callback,
hexley	0:281d6ff68967	536	* there is no way to know when the link is up. */
hexley	0:281d6ff68967	537	return PPPERR_PARAM;
hexley	0:281d6ff68967	538	}
hexley	0:281d6ff68967	539
hexley	0:281d6ff68967	540	/* Find a free PPP session descriptor. */
hexley	0:281d6ff68967	541	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
hexley	0:281d6ff68967	542
hexley	0:281d6ff68967	543	if (pd >= NUM_PPP) {
hexley	0:281d6ff68967	544	pd = PPPERR_OPEN;
hexley	0:281d6ff68967	545	} else {
hexley	0:281d6ff68967	546	pc = &pppControl[pd];
hexley	0:281d6ff68967	547	/* @todo: is this correct or do I overwrite something? */
hexley	0:281d6ff68967	548	memset(pc, 0, sizeof(PPPControl));
hexley	0:281d6ff68967	549	pc->rx.pd = pd;
hexley	0:281d6ff68967	550	pc->rx.fd = fd;
hexley	0:281d6ff68967	551
hexley	0:281d6ff68967	552	pc->openFlag = 1;
hexley	0:281d6ff68967	553	pc->fd = fd;
hexley	0:281d6ff68967	554
hexley	0:281d6ff68967	555	#if VJ_SUPPORT
hexley	0:281d6ff68967	556	vj_compress_init(&pc->vjComp);
hexley	0:281d6ff68967	557	#endif /* VJ_SUPPORT */
hexley	0:281d6ff68967	558
hexley	0:281d6ff68967	559	/*
hexley	0:281d6ff68967	560	* Default the in and out accm so that escape and flag characters
hexley	0:281d6ff68967	561	* are always escaped.
hexley	0:281d6ff68967	562	*/
hexley	0:281d6ff68967	563	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
hexley	0:281d6ff68967	564	pc->outACCM[15] = 0x60;
hexley	0:281d6ff68967	565
hexley	0:281d6ff68967	566	pc->linkStatusCB = linkStatusCB;
hexley	0:281d6ff68967	567	pc->linkStatusCtx = linkStatusCtx;
hexley	0:281d6ff68967	568
hexley	0:281d6ff68967	569	/*
hexley	0:281d6ff68967	570	* Start the connection and handle incoming events (packet or timeout).
hexley	0:281d6ff68967	571	*/
hexley	0:281d6ff68967	572	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
hexley	0:281d6ff68967	573	pppStart(pd);
hexley	0:281d6ff68967	574	#if PPP_INPROC_OWNTHREAD
hexley	0:281d6ff68967	575	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
hexley	0:281d6ff68967	576	#endif
hexley	0:281d6ff68967	577	}
hexley	0:281d6ff68967	578
hexley	0:281d6ff68967	579	return pd;
hexley	0:281d6ff68967	580	}
hexley	0:281d6ff68967	581	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	582
hexley	0:281d6ff68967	583	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	584	static void pppOverEthernetLinkStatusCB(int pd, int up);
hexley	0:281d6ff68967	585
hexley	0:281d6ff68967	586	void
hexley	0:281d6ff68967	587	pppOverEthernetClose(int pd)
hexley	0:281d6ff68967	588	{
hexley	0:281d6ff68967	589	PPPControl* pc = &pppControl[pd];
hexley	0:281d6ff68967	590
hexley	0:281d6ff68967	591	/* TJL There's no lcp_deinit */
hexley	0:281d6ff68967	592	lcp_close(pd, NULL);
hexley	0:281d6ff68967	593
hexley	0:281d6ff68967	594	pppoe_destroy(&pc->netif);
hexley	0:281d6ff68967	595	}
hexley	0:281d6ff68967	596
hexley	0:281d6ff68967	597	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
hexley	0:281d6ff68967	598	{
hexley	0:281d6ff68967	599	PPPControl *pc;
hexley	0:281d6ff68967	600	int pd;
hexley	0:281d6ff68967	601
hexley	0:281d6ff68967	602	LWIP_UNUSED_ARG(service_name);
hexley	0:281d6ff68967	603	LWIP_UNUSED_ARG(concentrator_name);
hexley	0:281d6ff68967	604
hexley	0:281d6ff68967	605	if (linkStatusCB == NULL) {
hexley	0:281d6ff68967	606	/* PPP is single-threaded: without a callback,
hexley	0:281d6ff68967	607	* there is no way to know when the link is up. */
hexley	0:281d6ff68967	608	return PPPERR_PARAM;
hexley	0:281d6ff68967	609	}
hexley	0:281d6ff68967	610
hexley	0:281d6ff68967	611	/* Find a free PPP session descriptor. Critical region? */
hexley	0:281d6ff68967	612	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
hexley	0:281d6ff68967	613	if (pd >= NUM_PPP) {
hexley	0:281d6ff68967	614	pd = PPPERR_OPEN;
hexley	0:281d6ff68967	615	} else {
hexley	0:281d6ff68967	616	pc = &pppControl[pd];
hexley	0:281d6ff68967	617	memset(pc, 0, sizeof(PPPControl));
hexley	0:281d6ff68967	618	pc->openFlag = 1;
hexley	0:281d6ff68967	619	pc->ethif = ethif;
hexley	0:281d6ff68967	620
hexley	0:281d6ff68967	621	pc->linkStatusCB = linkStatusCB;
hexley	0:281d6ff68967	622	pc->linkStatusCtx = linkStatusCtx;
hexley	0:281d6ff68967	623
hexley	0:281d6ff68967	624	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
hexley	0:281d6ff68967	625	lcp_wantoptions[pd].neg_asyncmap = 0;
hexley	0:281d6ff68967	626	lcp_wantoptions[pd].neg_pcompression = 0;
hexley	0:281d6ff68967	627	lcp_wantoptions[pd].neg_accompression = 0;
hexley	0:281d6ff68967	628
hexley	0:281d6ff68967	629	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
hexley	0:281d6ff68967	630	lcp_allowoptions[pd].neg_asyncmap = 0;
hexley	0:281d6ff68967	631	lcp_allowoptions[pd].neg_pcompression = 0;
hexley	0:281d6ff68967	632	lcp_allowoptions[pd].neg_accompression = 0;
hexley	0:281d6ff68967	633
hexley	0:281d6ff68967	634	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
hexley	0:281d6ff68967	635	pc->openFlag = 0;
hexley	0:281d6ff68967	636	return PPPERR_OPEN;
hexley	0:281d6ff68967	637	}
hexley	0:281d6ff68967	638
hexley	0:281d6ff68967	639	pppoe_connect(pc->pppoe_sc);
hexley	0:281d6ff68967	640	}
hexley	0:281d6ff68967	641
hexley	0:281d6ff68967	642	return pd;
hexley	0:281d6ff68967	643	}
hexley	0:281d6ff68967	644	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	645
hexley	0:281d6ff68967	646
hexley	0:281d6ff68967	647	/* Close a PPP connection and release the descriptor.
hexley	0:281d6ff68967	648	* Any outstanding packets in the queues are dropped.
hexley	0:281d6ff68967	649	* Return 0 on success, an error code on failure. */
hexley	0:281d6ff68967	650	int
hexley	0:281d6ff68967	651	pppClose(int pd)
hexley	0:281d6ff68967	652	{
hexley	0:281d6ff68967	653	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	654	int st = 0;
hexley	0:281d6ff68967	655
hexley	0:281d6ff68967	656	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
hexley	0:281d6ff68967	657
hexley	0:281d6ff68967	658	/* Disconnect */
hexley	0:281d6ff68967	659	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	660	if(pc->ethif) {
hexley	0:281d6ff68967	661	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
hexley	0:281d6ff68967	662	pc->errCode = PPPERR_USER;
hexley	0:281d6ff68967	663	/* This will leave us at PHASE_DEAD. */
hexley	0:281d6ff68967	664	pppStop(pd);
hexley	0:281d6ff68967	665	} else
hexley	0:281d6ff68967	666	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	667	{
hexley	0:281d6ff68967	668	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	669	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
hexley	0:281d6ff68967	670	pc->errCode = PPPERR_USER;
hexley	0:281d6ff68967	671	/* This will leave us at PHASE_DEAD. */
hexley	0:281d6ff68967	672	pppStop(pd);
hexley	0:281d6ff68967	673	pppRecvWakeup(pd);
hexley	0:281d6ff68967	674	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	675	}
hexley	0:281d6ff68967	676
hexley	0:281d6ff68967	677	return st;
hexley	0:281d6ff68967	678	}
hexley	0:281d6ff68967	679
hexley	0:281d6ff68967	680	/* This function is called when carrier is lost on the PPP channel. */
hexley	0:281d6ff68967	681	void
hexley	0:281d6ff68967	682	pppSigHUP(int pd)
hexley	0:281d6ff68967	683	{
hexley	0:281d6ff68967	684	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	685	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	686	if(pc->ethif) {
hexley	0:281d6ff68967	687	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
hexley	0:281d6ff68967	688	pppHup(pd);
hexley	0:281d6ff68967	689	} else
hexley	0:281d6ff68967	690	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	691	{
hexley	0:281d6ff68967	692	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	693	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
hexley	0:281d6ff68967	694	pppHup(pd);
hexley	0:281d6ff68967	695	pppRecvWakeup(pd);
hexley	0:281d6ff68967	696	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	697	}
hexley	0:281d6ff68967	698	}
hexley	0:281d6ff68967	699
hexley	0:281d6ff68967	700	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	701	static void
hexley	0:281d6ff68967	702	nPut(PPPControl pc, struct pbuf nb)
hexley	0:281d6ff68967	703	{
hexley	0:281d6ff68967	704	struct pbuf *b;
hexley	0:281d6ff68967	705	int c;
hexley	0:281d6ff68967	706
hexley	0:281d6ff68967	707	for(b = nb; b != NULL; b = b->next) {
hexley	0:281d6ff68967	708	if((c = sio_write(pc->fd, (u8_t *)b->payload, b->len)) != b->len) {
hexley	0:281d6ff68967	709	PPPDEBUG(LOG_WARNING,
hexley	0:281d6ff68967	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));
hexley	0:281d6ff68967	711	LINK_STATS_INC(link.err);
hexley	0:281d6ff68967	712	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
hexley	0:281d6ff68967	713	snmp_inc_ifoutdiscards(&pc->netif);
hexley	0:281d6ff68967	714	pbuf_free(nb);
hexley	0:281d6ff68967	715	return;
hexley	0:281d6ff68967	716	}
hexley	0:281d6ff68967	717	}
hexley	0:281d6ff68967	718
hexley	0:281d6ff68967	719	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
hexley	0:281d6ff68967	720	snmp_inc_ifoutucastpkts(&pc->netif);
hexley	0:281d6ff68967	721	pbuf_free(nb);
hexley	0:281d6ff68967	722	LINK_STATS_INC(link.xmit);
hexley	0:281d6ff68967	723	}
hexley	0:281d6ff68967	724
hexley	0:281d6ff68967	725	/*
hexley	0:281d6ff68967	726	* pppAppend - append given character to end of given pbuf. If outACCM
hexley	0:281d6ff68967	727	* is not NULL and the character needs to be escaped, do so.
hexley	0:281d6ff68967	728	* If pbuf is full, append another.
hexley	0:281d6ff68967	729	* Return the current pbuf.
hexley	0:281d6ff68967	730	*/
hexley	0:281d6ff68967	731	static struct pbuf *
hexley	0:281d6ff68967	732	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
hexley	0:281d6ff68967	733	{
hexley	0:281d6ff68967	734	struct pbuf *tb = nb;
hexley	0:281d6ff68967	735
hexley	0:281d6ff68967	736	/* Make sure there is room for the character and an escape code.
hexley	0:281d6ff68967	737	* Sure we don't quite fill the buffer if the character doesn't
hexley	0:281d6ff68967	738	* get escaped but is one character worth complicating this? */
hexley	0:281d6ff68967	739	/* Note: We assume no packet header. */
hexley	0:281d6ff68967	740	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
hexley	0:281d6ff68967	741	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
hexley	0:281d6ff68967	742	if (tb) {
hexley	0:281d6ff68967	743	nb->next = tb;
hexley	0:281d6ff68967	744	} else {
hexley	0:281d6ff68967	745	LINK_STATS_INC(link.memerr);
hexley	0:281d6ff68967	746	}
hexley	0:281d6ff68967	747	nb = tb;
hexley	0:281d6ff68967	748	}
hexley	0:281d6ff68967	749
hexley	0:281d6ff68967	750	if (nb) {
hexley	0:281d6ff68967	751	if (outACCM && ESCAPE_P(*outACCM, c)) {
hexley	0:281d6ff68967	752	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
hexley	0:281d6ff68967	753	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
hexley	0:281d6ff68967	754	} else {
hexley	0:281d6ff68967	755	((u_char)nb->payload + nb->len++) = c;
hexley	0:281d6ff68967	756	}
hexley	0:281d6ff68967	757	}
hexley	0:281d6ff68967	758
hexley	0:281d6ff68967	759	return tb;
hexley	0:281d6ff68967	760	}
hexley	0:281d6ff68967	761	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	762
hexley	0:281d6ff68967	763	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	764	static err_t
hexley	0:281d6ff68967	765	pppifOutputOverEthernet(int pd, struct pbuf *p)
hexley	0:281d6ff68967	766	{
hexley	0:281d6ff68967	767	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	768	struct pbuf *pb;
hexley	0:281d6ff68967	769	u_short protocol = PPP_IP;
hexley	0:281d6ff68967	770	int i=0;
hexley	0:281d6ff68967	771	u16_t tot_len;
hexley	0:281d6ff68967	772
hexley	0:281d6ff68967	773	/* @todo: try to use pbuf_header() here! */
hexley	0:281d6ff68967	774	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
hexley	0:281d6ff68967	775	if(!pb) {
hexley	0:281d6ff68967	776	LINK_STATS_INC(link.memerr);
hexley	0:281d6ff68967	777	LINK_STATS_INC(link.proterr);
hexley	0:281d6ff68967	778	snmp_inc_ifoutdiscards(&pc->netif);
hexley	0:281d6ff68967	779	return ERR_MEM;
hexley	0:281d6ff68967	780	}
hexley	0:281d6ff68967	781
hexley	0:281d6ff68967	782	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
hexley	0:281d6ff68967	783
hexley	0:281d6ff68967	784	pc->lastXMit = sys_jiffies();
hexley	0:281d6ff68967	785
hexley	0:281d6ff68967	786	if (!pc->pcomp \|\| protocol > 0xFF) {
hexley	0:281d6ff68967	787	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
hexley	0:281d6ff68967	788	}
hexley	0:281d6ff68967	789	((u_char)pb->payload + i) = protocol & 0xFF;
hexley	0:281d6ff68967	790
hexley	0:281d6ff68967	791	pbuf_chain(pb, p);
hexley	0:281d6ff68967	792	tot_len = pb->tot_len;
hexley	0:281d6ff68967	793
hexley	0:281d6ff68967	794	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
hexley	0:281d6ff68967	795	LINK_STATS_INC(link.err);
hexley	0:281d6ff68967	796	snmp_inc_ifoutdiscards(&pc->netif);
hexley	0:281d6ff68967	797	return PPPERR_DEVICE;
hexley	0:281d6ff68967	798	}
hexley	0:281d6ff68967	799
hexley	0:281d6ff68967	800	snmp_add_ifoutoctets(&pc->netif, tot_len);
hexley	0:281d6ff68967	801	snmp_inc_ifoutucastpkts(&pc->netif);
hexley	0:281d6ff68967	802	LINK_STATS_INC(link.xmit);
hexley	0:281d6ff68967	803	return ERR_OK;
hexley	0:281d6ff68967	804	}
hexley	0:281d6ff68967	805	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	806
hexley	0:281d6ff68967	807	/* Send a packet on the given connection. */
hexley	0:281d6ff68967	808	static err_t
hexley	0:281d6ff68967	809	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
hexley	0:281d6ff68967	810	{
hexley	0:281d6ff68967	811	int pd = (int)(size_t)netif->state;
hexley	0:281d6ff68967	812	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	813	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	814	u_short protocol = PPP_IP;
hexley	0:281d6ff68967	815	u_int fcsOut = PPP_INITFCS;
hexley	0:281d6ff68967	816	struct pbuf headMB = NULL, tailMB = NULL, *p;
hexley	0:281d6ff68967	817	u_char c;
hexley	0:281d6ff68967	818	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	819
hexley	0:281d6ff68967	820	LWIP_UNUSED_ARG(ipaddr);
hexley	0:281d6ff68967	821
hexley	0:281d6ff68967	822	/* Validate parameters. */
hexley	0:281d6ff68967	823	/* We let any protocol value go through - it can't hurt us
hexley	0:281d6ff68967	824	* and the peer will just drop it if it's not accepting it. */
hexley	0:281d6ff68967	825	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
hexley	0:281d6ff68967	826	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
hexley	0:281d6ff68967	827	pd, PPP_IP, pb));
hexley	0:281d6ff68967	828	LINK_STATS_INC(link.opterr);
hexley	0:281d6ff68967	829	LINK_STATS_INC(link.drop);
hexley	0:281d6ff68967	830	snmp_inc_ifoutdiscards(netif);
hexley	0:281d6ff68967	831	return ERR_ARG;
hexley	0:281d6ff68967	832	}
hexley	0:281d6ff68967	833
hexley	0:281d6ff68967	834	/* Check that the link is up. */
hexley	0:281d6ff68967	835	if (lcp_phase[pd] == PHASE_DEAD) {
hexley	0:281d6ff68967	836	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
hexley	0:281d6ff68967	837	LINK_STATS_INC(link.rterr);
hexley	0:281d6ff68967	838	LINK_STATS_INC(link.drop);
hexley	0:281d6ff68967	839	snmp_inc_ifoutdiscards(netif);
hexley	0:281d6ff68967	840	return ERR_RTE;
hexley	0:281d6ff68967	841	}
hexley	0:281d6ff68967	842
hexley	0:281d6ff68967	843	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	844	if(pc->ethif) {
hexley	0:281d6ff68967	845	return pppifOutputOverEthernet(pd, pb);
hexley	0:281d6ff68967	846	}
hexley	0:281d6ff68967	847	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	848
hexley	0:281d6ff68967	849	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	850	/* Grab an output buffer. */
hexley	0:281d6ff68967	851	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
hexley	0:281d6ff68967	852	if (headMB == NULL) {
hexley	0:281d6ff68967	853	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
hexley	0:281d6ff68967	854	LINK_STATS_INC(link.memerr);
hexley	0:281d6ff68967	855	LINK_STATS_INC(link.drop);
hexley	0:281d6ff68967	856	snmp_inc_ifoutdiscards(netif);
hexley	0:281d6ff68967	857	return ERR_MEM;
hexley	0:281d6ff68967	858	}
hexley	0:281d6ff68967	859
hexley	0:281d6ff68967	860	#if VJ_SUPPORT
hexley	0:281d6ff68967	861	/*
hexley	0:281d6ff68967	862	* Attempt Van Jacobson header compression if VJ is configured and
hexley	0:281d6ff68967	863	* this is an IP packet.
hexley	0:281d6ff68967	864	*/
hexley	0:281d6ff68967	865	if (protocol == PPP_IP && pc->vjEnabled) {
hexley	0:281d6ff68967	866	switch (vj_compress_tcp(&pc->vjComp, pb)) {
hexley	0:281d6ff68967	867	case TYPE_IP:
hexley	0:281d6ff68967	868	/* No change...
hexley	0:281d6ff68967	869	protocol = PPP_IP_PROTOCOL; */
hexley	0:281d6ff68967	870	break;
hexley	0:281d6ff68967	871	case TYPE_COMPRESSED_TCP:
hexley	0:281d6ff68967	872	protocol = PPP_VJC_COMP;
hexley	0:281d6ff68967	873	break;
hexley	0:281d6ff68967	874	case TYPE_UNCOMPRESSED_TCP:
hexley	0:281d6ff68967	875	protocol = PPP_VJC_UNCOMP;
hexley	0:281d6ff68967	876	break;
hexley	0:281d6ff68967	877	default:
hexley	0:281d6ff68967	878	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
hexley	0:281d6ff68967	879	LINK_STATS_INC(link.proterr);
hexley	0:281d6ff68967	880	LINK_STATS_INC(link.drop);
hexley	0:281d6ff68967	881	snmp_inc_ifoutdiscards(netif);
hexley	0:281d6ff68967	882	pbuf_free(headMB);
hexley	0:281d6ff68967	883	return ERR_VAL;
hexley	0:281d6ff68967	884	}
hexley	0:281d6ff68967	885	}
hexley	0:281d6ff68967	886	#endif /* VJ_SUPPORT */
hexley	0:281d6ff68967	887
hexley	0:281d6ff68967	888	tailMB = headMB;
hexley	0:281d6ff68967	889
hexley	0:281d6ff68967	890	/* Build the PPP header. */
hexley	0:281d6ff68967	891	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
hexley	0:281d6ff68967	892	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
hexley	0:281d6ff68967	893	}
hexley	0:281d6ff68967	894
hexley	0:281d6ff68967	895	pc->lastXMit = sys_jiffies();
hexley	0:281d6ff68967	896	if (!pc->accomp) {
hexley	0:281d6ff68967	897	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
hexley	0:281d6ff68967	898	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
hexley	0:281d6ff68967	899	fcsOut = PPP_FCS(fcsOut, PPP_UI);
hexley	0:281d6ff68967	900	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
hexley	0:281d6ff68967	901	}
hexley	0:281d6ff68967	902	if (!pc->pcomp \|\| protocol > 0xFF) {
hexley	0:281d6ff68967	903	c = (protocol >> 8) & 0xFF;
hexley	0:281d6ff68967	904	fcsOut = PPP_FCS(fcsOut, c);
hexley	0:281d6ff68967	905	tailMB = pppAppend(c, tailMB, &pc->outACCM);
hexley	0:281d6ff68967	906	}
hexley	0:281d6ff68967	907	c = protocol & 0xFF;
hexley	0:281d6ff68967	908	fcsOut = PPP_FCS(fcsOut, c);
hexley	0:281d6ff68967	909	tailMB = pppAppend(c, tailMB, &pc->outACCM);
hexley	0:281d6ff68967	910
hexley	0:281d6ff68967	911	/* Load packet. */
hexley	0:281d6ff68967	912	for(p = pb; p; p = p->next) {
hexley	0:281d6ff68967	913	int n;
hexley	0:281d6ff68967	914	u_char *sPtr;
hexley	0:281d6ff68967	915
hexley	0:281d6ff68967	916	sPtr = (u_char*)p->payload;
hexley	0:281d6ff68967	917	n = p->len;
hexley	0:281d6ff68967	918	while (n-- > 0) {
hexley	0:281d6ff68967	919	c = *sPtr++;
hexley	0:281d6ff68967	920
hexley	0:281d6ff68967	921	/* Update FCS before checking for special characters. */
hexley	0:281d6ff68967	922	fcsOut = PPP_FCS(fcsOut, c);
hexley	0:281d6ff68967	923
hexley	0:281d6ff68967	924	/* Copy to output buffer escaping special characters. */
hexley	0:281d6ff68967	925	tailMB = pppAppend(c, tailMB, &pc->outACCM);
hexley	0:281d6ff68967	926	}
hexley	0:281d6ff68967	927	}
hexley	0:281d6ff68967	928
hexley	0:281d6ff68967	929	/* Add FCS and trailing flag. */
hexley	0:281d6ff68967	930	c = ~fcsOut & 0xFF;
hexley	0:281d6ff68967	931	tailMB = pppAppend(c, tailMB, &pc->outACCM);
hexley	0:281d6ff68967	932	c = (~fcsOut >> 8) & 0xFF;
hexley	0:281d6ff68967	933	tailMB = pppAppend(c, tailMB, &pc->outACCM);
hexley	0:281d6ff68967	934	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
hexley	0:281d6ff68967	935
hexley	0:281d6ff68967	936	/* If we failed to complete the packet, throw it away. */
hexley	0:281d6ff68967	937	if (!tailMB) {
hexley	0:281d6ff68967	938	PPPDEBUG(LOG_WARNING,
hexley	0:281d6ff68967	939	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
hexley	0:281d6ff68967	940	pd, protocol));
hexley	0:281d6ff68967	941	pbuf_free(headMB);
hexley	0:281d6ff68967	942	LINK_STATS_INC(link.memerr);
hexley	0:281d6ff68967	943	LINK_STATS_INC(link.drop);
hexley	0:281d6ff68967	944	snmp_inc_ifoutdiscards(netif);
hexley	0:281d6ff68967	945	return ERR_MEM;
hexley	0:281d6ff68967	946	}
hexley	0:281d6ff68967	947
hexley	0:281d6ff68967	948	/* Send it. */
hexley	0:281d6ff68967	949	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
hexley	0:281d6ff68967	950
hexley	0:281d6ff68967	951	nPut(pc, headMB);
hexley	0:281d6ff68967	952	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	953
hexley	0:281d6ff68967	954	return ERR_OK;
hexley	0:281d6ff68967	955	}
hexley	0:281d6ff68967	956
hexley	0:281d6ff68967	957	/* Get and set parameters for the given connection.
hexley	0:281d6ff68967	958	* Return 0 on success, an error code on failure. */
hexley	0:281d6ff68967	959	int
hexley	0:281d6ff68967	960	pppIOCtl(int pd, int cmd, void *arg)
hexley	0:281d6ff68967	961	{
hexley	0:281d6ff68967	962	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	963	int st = 0;
hexley	0:281d6ff68967	964
hexley	0:281d6ff68967	965	if (pd < 0 \|\| pd >= NUM_PPP) {
hexley	0:281d6ff68967	966	st = PPPERR_PARAM;
hexley	0:281d6ff68967	967	} else {
hexley	0:281d6ff68967	968	switch(cmd) {
hexley	0:281d6ff68967	969	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
hexley	0:281d6ff68967	970	if (arg) {
hexley	0:281d6ff68967	971	(int )arg = (int)(pc->if_up);
hexley	0:281d6ff68967	972	} else {
hexley	0:281d6ff68967	973	st = PPPERR_PARAM;
hexley	0:281d6ff68967	974	}
hexley	0:281d6ff68967	975	break;
hexley	0:281d6ff68967	976	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
hexley	0:281d6ff68967	977	if (arg) {
hexley	0:281d6ff68967	978	pc->errCode = (int )arg;
hexley	0:281d6ff68967	979	} else {
hexley	0:281d6ff68967	980	st = PPPERR_PARAM;
hexley	0:281d6ff68967	981	}
hexley	0:281d6ff68967	982	break;
hexley	0:281d6ff68967	983	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
hexley	0:281d6ff68967	984	if (arg) {
hexley	0:281d6ff68967	985	(int )arg = (int)(pc->errCode);
hexley	0:281d6ff68967	986	} else {
hexley	0:281d6ff68967	987	st = PPPERR_PARAM;
hexley	0:281d6ff68967	988	}
hexley	0:281d6ff68967	989	break;
hexley	0:281d6ff68967	990	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	991	case PPPCTLG_FD: /* Get the fd associated with the ppp */
hexley	0:281d6ff68967	992	if (arg) {
hexley	0:281d6ff68967	993	(sio_fd_t )arg = pc->fd;
hexley	0:281d6ff68967	994	} else {
hexley	0:281d6ff68967	995	st = PPPERR_PARAM;
hexley	0:281d6ff68967	996	}
hexley	0:281d6ff68967	997	break;
hexley	0:281d6ff68967	998	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	999	default:
hexley	0:281d6ff68967	1000	st = PPPERR_PARAM;
hexley	0:281d6ff68967	1001	break;
hexley	0:281d6ff68967	1002	}
hexley	0:281d6ff68967	1003	}
hexley	0:281d6ff68967	1004
hexley	0:281d6ff68967	1005	return st;
hexley	0:281d6ff68967	1006	}
hexley	0:281d6ff68967	1007
hexley	0:281d6ff68967	1008	/*
hexley	0:281d6ff68967	1009	* Return the Maximum Transmission Unit for the given PPP connection.
hexley	0:281d6ff68967	1010	*/
hexley	0:281d6ff68967	1011	u_short
hexley	0:281d6ff68967	1012	pppMTU(int pd)
hexley	0:281d6ff68967	1013	{
hexley	0:281d6ff68967	1014	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	1015	u_short st;
hexley	0:281d6ff68967	1016
hexley	0:281d6ff68967	1017	/* Validate parameters. */
hexley	0:281d6ff68967	1018	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
hexley	0:281d6ff68967	1019	st = 0;
hexley	0:281d6ff68967	1020	} else {
hexley	0:281d6ff68967	1021	st = pc->mtu;
hexley	0:281d6ff68967	1022	}
hexley	0:281d6ff68967	1023
hexley	0:281d6ff68967	1024	return st;
hexley	0:281d6ff68967	1025	}
hexley	0:281d6ff68967	1026
hexley	0:281d6ff68967	1027	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	1028	int
hexley	0:281d6ff68967	1029	pppWriteOverEthernet(int pd, const u_char *s, int n)
hexley	0:281d6ff68967	1030	{
hexley	0:281d6ff68967	1031	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	1032	struct pbuf *pb;
hexley	0:281d6ff68967	1033
hexley	0:281d6ff68967	1034	/* skip address & flags */
hexley	0:281d6ff68967	1035	s += 2;
hexley	0:281d6ff68967	1036	n -= 2;
hexley	0:281d6ff68967	1037
hexley	0:281d6ff68967	1038	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
hexley	0:281d6ff68967	1039	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
hexley	0:281d6ff68967	1040	if(!pb) {
hexley	0:281d6ff68967	1041	LINK_STATS_INC(link.memerr);
hexley	0:281d6ff68967	1042	LINK_STATS_INC(link.proterr);
hexley	0:281d6ff68967	1043	snmp_inc_ifoutdiscards(&pc->netif);
hexley	0:281d6ff68967	1044	return PPPERR_ALLOC;
hexley	0:281d6ff68967	1045	}
hexley	0:281d6ff68967	1046
hexley	0:281d6ff68967	1047	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
hexley	0:281d6ff68967	1048
hexley	0:281d6ff68967	1049	pc->lastXMit = sys_jiffies();
hexley	0:281d6ff68967	1050
hexley	0:281d6ff68967	1051	MEMCPY(pb->payload, s, n);
hexley	0:281d6ff68967	1052
hexley	0:281d6ff68967	1053	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
hexley	0:281d6ff68967	1054	LINK_STATS_INC(link.err);
hexley	0:281d6ff68967	1055	snmp_inc_ifoutdiscards(&pc->netif);
hexley	0:281d6ff68967	1056	return PPPERR_DEVICE;
hexley	0:281d6ff68967	1057	}
hexley	0:281d6ff68967	1058
hexley	0:281d6ff68967	1059	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
hexley	0:281d6ff68967	1060	snmp_inc_ifoutucastpkts(&pc->netif);
hexley	0:281d6ff68967	1061	LINK_STATS_INC(link.xmit);
hexley	0:281d6ff68967	1062	return PPPERR_NONE;
hexley	0:281d6ff68967	1063	}
hexley	0:281d6ff68967	1064	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	1065
hexley	0:281d6ff68967	1066	/*
hexley	0:281d6ff68967	1067	* Write n characters to a ppp link.
hexley	0:281d6ff68967	1068	* RETURN: >= 0 Number of characters written
hexley	0:281d6ff68967	1069	* -1 Failed to write to device
hexley	0:281d6ff68967	1070	*/
hexley	0:281d6ff68967	1071	int
hexley	0:281d6ff68967	1072	pppWrite(int pd, const u_char *s, int n)
hexley	0:281d6ff68967	1073	{
hexley	0:281d6ff68967	1074	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	1075	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	1076	u_char c;
hexley	0:281d6ff68967	1077	u_int fcsOut;
hexley	0:281d6ff68967	1078	struct pbuf headMB, tailMB;
hexley	0:281d6ff68967	1079	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	1080
hexley	0:281d6ff68967	1081	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	1082	if(pc->ethif) {
hexley	0:281d6ff68967	1083	return pppWriteOverEthernet(pd, s, n);
hexley	0:281d6ff68967	1084	}
hexley	0:281d6ff68967	1085	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	1086
hexley	0:281d6ff68967	1087	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	1088	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
hexley	0:281d6ff68967	1089	if (headMB == NULL) {
hexley	0:281d6ff68967	1090	LINK_STATS_INC(link.memerr);
hexley	0:281d6ff68967	1091	LINK_STATS_INC(link.proterr);
hexley	0:281d6ff68967	1092	snmp_inc_ifoutdiscards(&pc->netif);
hexley	0:281d6ff68967	1093	return PPPERR_ALLOC;
hexley	0:281d6ff68967	1094	}
hexley	0:281d6ff68967	1095
hexley	0:281d6ff68967	1096	tailMB = headMB;
hexley	0:281d6ff68967	1097
hexley	0:281d6ff68967	1098	/* If the link has been idle, we'll send a fresh flag character to
hexley	0:281d6ff68967	1099	* flush any noise. */
hexley	0:281d6ff68967	1100	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
hexley	0:281d6ff68967	1101	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
hexley	0:281d6ff68967	1102	}
hexley	0:281d6ff68967	1103	pc->lastXMit = sys_jiffies();
hexley	0:281d6ff68967	1104
hexley	0:281d6ff68967	1105	fcsOut = PPP_INITFCS;
hexley	0:281d6ff68967	1106	/* Load output buffer. */
hexley	0:281d6ff68967	1107	while (n-- > 0) {
hexley	0:281d6ff68967	1108	c = *s++;
hexley	0:281d6ff68967	1109
hexley	0:281d6ff68967	1110	/* Update FCS before checking for special characters. */
hexley	0:281d6ff68967	1111	fcsOut = PPP_FCS(fcsOut, c);
hexley	0:281d6ff68967	1112
hexley	0:281d6ff68967	1113	/* Copy to output buffer escaping special characters. */
hexley	0:281d6ff68967	1114	tailMB = pppAppend(c, tailMB, &pc->outACCM);
hexley	0:281d6ff68967	1115	}
hexley	0:281d6ff68967	1116
hexley	0:281d6ff68967	1117	/* Add FCS and trailing flag. */
hexley	0:281d6ff68967	1118	c = ~fcsOut & 0xFF;
hexley	0:281d6ff68967	1119	tailMB = pppAppend(c, tailMB, &pc->outACCM);
hexley	0:281d6ff68967	1120	c = (~fcsOut >> 8) & 0xFF;
hexley	0:281d6ff68967	1121	tailMB = pppAppend(c, tailMB, &pc->outACCM);
hexley	0:281d6ff68967	1122	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
hexley	0:281d6ff68967	1123
hexley	0:281d6ff68967	1124	/* If we failed to complete the packet, throw it away.
hexley	0:281d6ff68967	1125	* Otherwise send it. */
hexley	0:281d6ff68967	1126	if (!tailMB) {
hexley	0:281d6ff68967	1127	PPPDEBUG(LOG_WARNING,
hexley	0:281d6ff68967	1128	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
hexley	0:281d6ff68967	1129	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
hexley	0:281d6ff68967	1130	pbuf_free(headMB);
hexley	0:281d6ff68967	1131	LINK_STATS_INC(link.memerr);
hexley	0:281d6ff68967	1132	LINK_STATS_INC(link.proterr);
hexley	0:281d6ff68967	1133	snmp_inc_ifoutdiscards(&pc->netif);
hexley	0:281d6ff68967	1134	return PPPERR_ALLOC;
hexley	0:281d6ff68967	1135	}
hexley	0:281d6ff68967	1136
hexley	0:281d6ff68967	1137	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
hexley	0:281d6ff68967	1138	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
hexley	0:281d6ff68967	1139	nPut(pc, headMB);
hexley	0:281d6ff68967	1140	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	1141
hexley	0:281d6ff68967	1142	return PPPERR_NONE;
hexley	0:281d6ff68967	1143	}
hexley	0:281d6ff68967	1144
hexley	0:281d6ff68967	1145	/*
hexley	0:281d6ff68967	1146	* ppp_send_config - configure the transmit characteristics of
hexley	0:281d6ff68967	1147	* the ppp interface.
hexley	0:281d6ff68967	1148	*/
hexley	0:281d6ff68967	1149	void
hexley	0:281d6ff68967	1150	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
hexley	0:281d6ff68967	1151	{
hexley	0:281d6ff68967	1152	PPPControl *pc = &pppControl[unit];
hexley	0:281d6ff68967	1153	int i;
hexley	0:281d6ff68967	1154
hexley	0:281d6ff68967	1155	pc->mtu = mtu;
hexley	0:281d6ff68967	1156	pc->pcomp = pcomp;
hexley	0:281d6ff68967	1157	pc->accomp = accomp;
hexley	0:281d6ff68967	1158
hexley	0:281d6ff68967	1159	/* Load the ACCM bits for the 32 control codes. */
hexley	0:281d6ff68967	1160	for (i = 0; i < 32/8; i++) {
hexley	0:281d6ff68967	1161	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
hexley	0:281d6ff68967	1162	}
hexley	0:281d6ff68967	1163	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
hexley	0:281d6ff68967	1164	unit,
hexley	0:281d6ff68967	1165	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
hexley	0:281d6ff68967	1166	}
hexley	0:281d6ff68967	1167
hexley	0:281d6ff68967	1168
hexley	0:281d6ff68967	1169	/*
hexley	0:281d6ff68967	1170	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
hexley	0:281d6ff68967	1171	*/
hexley	0:281d6ff68967	1172	void
hexley	0:281d6ff68967	1173	ppp_set_xaccm(int unit, ext_accm *accm)
hexley	0:281d6ff68967	1174	{
hexley	0:281d6ff68967	1175	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
hexley	0:281d6ff68967	1176	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
hexley	0:281d6ff68967	1177	unit,
hexley	0:281d6ff68967	1178	pppControl[unit].outACCM[0],
hexley	0:281d6ff68967	1179	pppControl[unit].outACCM[1],
hexley	0:281d6ff68967	1180	pppControl[unit].outACCM[2],
hexley	0:281d6ff68967	1181	pppControl[unit].outACCM[3]));
hexley	0:281d6ff68967	1182	}
hexley	0:281d6ff68967	1183
hexley	0:281d6ff68967	1184
hexley	0:281d6ff68967	1185	/*
hexley	0:281d6ff68967	1186	* ppp_recv_config - configure the receive-side characteristics of
hexley	0:281d6ff68967	1187	* the ppp interface.
hexley	0:281d6ff68967	1188	*/
hexley	0:281d6ff68967	1189	void
hexley	0:281d6ff68967	1190	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
hexley	0:281d6ff68967	1191	{
hexley	0:281d6ff68967	1192	PPPControl *pc = &pppControl[unit];
hexley	0:281d6ff68967	1193	int i;
hexley	0:281d6ff68967	1194	SYS_ARCH_DECL_PROTECT(lev);
hexley	0:281d6ff68967	1195
hexley	0:281d6ff68967	1196	LWIP_UNUSED_ARG(accomp);
hexley	0:281d6ff68967	1197	LWIP_UNUSED_ARG(pcomp);
hexley	0:281d6ff68967	1198	LWIP_UNUSED_ARG(mru);
hexley	0:281d6ff68967	1199
hexley	0:281d6ff68967	1200	/* Load the ACCM bits for the 32 control codes. */
hexley	0:281d6ff68967	1201	SYS_ARCH_PROTECT(lev);
hexley	0:281d6ff68967	1202	for (i = 0; i < 32 / 8; i++) {
hexley	0:281d6ff68967	1203	/* @todo: does this work? ext_accm has been modified from pppd! */
hexley	0:281d6ff68967	1204	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
hexley	0:281d6ff68967	1205	}
hexley	0:281d6ff68967	1206	SYS_ARCH_UNPROTECT(lev);
hexley	0:281d6ff68967	1207	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
hexley	0:281d6ff68967	1208	unit,
hexley	0:281d6ff68967	1209	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
hexley	0:281d6ff68967	1210	}
hexley	0:281d6ff68967	1211
hexley	0:281d6ff68967	1212	#if 0
hexley	0:281d6ff68967	1213	/*
hexley	0:281d6ff68967	1214	* ccp_test - ask kernel whether a given compression method
hexley	0:281d6ff68967	1215	* is acceptable for use. Returns 1 if the method and parameters
hexley	0:281d6ff68967	1216	* are OK, 0 if the method is known but the parameters are not OK
hexley	0:281d6ff68967	1217	* (e.g. code size should be reduced), or -1 if the method is unknown.
hexley	0:281d6ff68967	1218	*/
hexley	0:281d6ff68967	1219	int
hexley	0:281d6ff68967	1220	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
hexley	0:281d6ff68967	1221	{
hexley	0:281d6ff68967	1222	return 0; /* XXX Currently no compression. */
hexley	0:281d6ff68967	1223	}
hexley	0:281d6ff68967	1224
hexley	0:281d6ff68967	1225	/*
hexley	0:281d6ff68967	1226	* ccp_flags_set - inform kernel about the current state of CCP.
hexley	0:281d6ff68967	1227	*/
hexley	0:281d6ff68967	1228	void
hexley	0:281d6ff68967	1229	ccp_flags_set(int unit, int isopen, int isup)
hexley	0:281d6ff68967	1230	{
hexley	0:281d6ff68967	1231	/* XXX */
hexley	0:281d6ff68967	1232	}
hexley	0:281d6ff68967	1233
hexley	0:281d6ff68967	1234	/*
hexley	0:281d6ff68967	1235	* ccp_fatal_error - returns 1 if decompression was disabled as a
hexley	0:281d6ff68967	1236	* result of an error detected after decompression of a packet,
hexley	0:281d6ff68967	1237	* 0 otherwise. This is necessary because of patent nonsense.
hexley	0:281d6ff68967	1238	*/
hexley	0:281d6ff68967	1239	int
hexley	0:281d6ff68967	1240	ccp_fatal_error(int unit)
hexley	0:281d6ff68967	1241	{
hexley	0:281d6ff68967	1242	/* XXX */
hexley	0:281d6ff68967	1243	return 0;
hexley	0:281d6ff68967	1244	}
hexley	0:281d6ff68967	1245	#endif
hexley	0:281d6ff68967	1246
hexley	0:281d6ff68967	1247	/*
hexley	0:281d6ff68967	1248	* get_idle_time - return how long the link has been idle.
hexley	0:281d6ff68967	1249	*/
hexley	0:281d6ff68967	1250	int
hexley	0:281d6ff68967	1251	get_idle_time(int u, struct ppp_idle *ip)
hexley	0:281d6ff68967	1252	{
hexley	0:281d6ff68967	1253	/* XXX */
hexley	0:281d6ff68967	1254	LWIP_UNUSED_ARG(u);
hexley	0:281d6ff68967	1255	LWIP_UNUSED_ARG(ip);
hexley	0:281d6ff68967	1256
hexley	0:281d6ff68967	1257	return 0;
hexley	0:281d6ff68967	1258	}
hexley	0:281d6ff68967	1259
hexley	0:281d6ff68967	1260
hexley	0:281d6ff68967	1261	/*
hexley	0:281d6ff68967	1262	* Return user specified netmask, modified by any mask we might determine
hexley	0:281d6ff68967	1263	* for address `addr' (in network byte order).
hexley	0:281d6ff68967	1264	* Here we scan through the system's list of interfaces, looking for
hexley	0:281d6ff68967	1265	* any non-point-to-point interfaces which might appear to be on the same
hexley	0:281d6ff68967	1266	* network as `addr'. If we find any, we OR in their netmask to the
hexley	0:281d6ff68967	1267	* user-specified netmask.
hexley	0:281d6ff68967	1268	*/
hexley	0:281d6ff68967	1269	u32_t
hexley	0:281d6ff68967	1270	GetMask(u32_t addr)
hexley	0:281d6ff68967	1271	{
hexley	0:281d6ff68967	1272	u32_t mask, nmask;
hexley	0:281d6ff68967	1273
hexley	0:281d6ff68967	1274	htonl(addr);
hexley	0:281d6ff68967	1275	if (IP_CLASSA(addr)) { /* determine network mask for address class */
hexley	0:281d6ff68967	1276	nmask = IP_CLASSA_NET;
hexley	0:281d6ff68967	1277	} else if (IP_CLASSB(addr)) {
hexley	0:281d6ff68967	1278	nmask = IP_CLASSB_NET;
hexley	0:281d6ff68967	1279	} else {
hexley	0:281d6ff68967	1280	nmask = IP_CLASSC_NET;
hexley	0:281d6ff68967	1281	}
hexley	0:281d6ff68967	1282
hexley	0:281d6ff68967	1283	/* class D nets are disallowed by bad_ip_adrs */
hexley	0:281d6ff68967	1284	mask = subnetMask \| htonl(nmask);
hexley	0:281d6ff68967	1285
hexley	0:281d6ff68967	1286	/* XXX
hexley	0:281d6ff68967	1287	* Scan through the system's network interfaces.
hexley	0:281d6ff68967	1288	* Get each netmask and OR them into our mask.
hexley	0:281d6ff68967	1289	*/
hexley	0:281d6ff68967	1290
hexley	0:281d6ff68967	1291	return mask;
hexley	0:281d6ff68967	1292	}
hexley	0:281d6ff68967	1293
hexley	0:281d6ff68967	1294	/*
hexley	0:281d6ff68967	1295	* sifvjcomp - config tcp header compression
hexley	0:281d6ff68967	1296	*/
hexley	0:281d6ff68967	1297	int
hexley	0:281d6ff68967	1298	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
hexley	0:281d6ff68967	1299	{
hexley	0:281d6ff68967	1300	#if PPPOS_SUPPORT && VJ_SUPPORT
hexley	0:281d6ff68967	1301	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	1302
hexley	0:281d6ff68967	1303	pc->vjEnabled = vjcomp;
hexley	0:281d6ff68967	1304	pc->vjComp.compressSlot = cidcomp;
hexley	0:281d6ff68967	1305	pc->vjComp.maxSlotIndex = maxcid;
hexley	0:281d6ff68967	1306	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
hexley	0:281d6ff68967	1307	vjcomp, cidcomp, maxcid));
hexley	0:281d6ff68967	1308	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
hexley	0:281d6ff68967	1309	LWIP_UNUSED_ARG(pd);
hexley	0:281d6ff68967	1310	LWIP_UNUSED_ARG(vjcomp);
hexley	0:281d6ff68967	1311	LWIP_UNUSED_ARG(cidcomp);
hexley	0:281d6ff68967	1312	LWIP_UNUSED_ARG(maxcid);
hexley	0:281d6ff68967	1313	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
hexley	0:281d6ff68967	1314
hexley	0:281d6ff68967	1315	return 0;
hexley	0:281d6ff68967	1316	}
hexley	0:281d6ff68967	1317
hexley	0:281d6ff68967	1318	/*
hexley	0:281d6ff68967	1319	* pppifNetifInit - netif init callback
hexley	0:281d6ff68967	1320	*/
hexley	0:281d6ff68967	1321	static err_t
hexley	0:281d6ff68967	1322	pppifNetifInit(struct netif *netif)
hexley	0:281d6ff68967	1323	{
hexley	0:281d6ff68967	1324	netif->name[0] = 'p';
hexley	0:281d6ff68967	1325	netif->name[1] = 'p';
hexley	0:281d6ff68967	1326	netif->output = pppifOutput;
hexley	0:281d6ff68967	1327	netif->mtu = pppMTU((int)(size_t)netif->state);
hexley	0:281d6ff68967	1328	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
hexley	0:281d6ff68967	1329	#if LWIP_NETIF_HOSTNAME
hexley	0:281d6ff68967	1330	/* @todo: Initialize interface hostname */
hexley	0:281d6ff68967	1331	/* netif_set_hostname(netif, "lwip"); */
hexley	0:281d6ff68967	1332	#endif /* LWIP_NETIF_HOSTNAME */
hexley	0:281d6ff68967	1333	return ERR_OK;
hexley	0:281d6ff68967	1334	}
hexley	0:281d6ff68967	1335
hexley	0:281d6ff68967	1336
hexley	0:281d6ff68967	1337	/*
hexley	0:281d6ff68967	1338	* sifup - Config the interface up and enable IP packets to pass.
hexley	0:281d6ff68967	1339	*/
hexley	0:281d6ff68967	1340	int
hexley	0:281d6ff68967	1341	sifup(int pd)
hexley	0:281d6ff68967	1342	{
hexley	0:281d6ff68967	1343	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	1344	int st = 1;
hexley	0:281d6ff68967	1345
hexley	0:281d6ff68967	1346	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
hexley	0:281d6ff68967	1347	st = 0;
hexley	0:281d6ff68967	1348	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
hexley	0:281d6ff68967	1349	} else {
hexley	0:281d6ff68967	1350	netif_remove(&pc->netif);
hexley	0:281d6ff68967	1351	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
hexley	0:281d6ff68967	1352	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
hexley	0:281d6ff68967	1353	netif_set_up(&pc->netif);
hexley	0:281d6ff68967	1354	pc->if_up = 1;
hexley	0:281d6ff68967	1355	pc->errCode = PPPERR_NONE;
hexley	0:281d6ff68967	1356
hexley	0:281d6ff68967	1357	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
hexley	0:281d6ff68967	1358	if (pc->linkStatusCB) {
hexley	0:281d6ff68967	1359	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
hexley	0:281d6ff68967	1360	}
hexley	0:281d6ff68967	1361	} else {
hexley	0:281d6ff68967	1362	st = 0;
hexley	0:281d6ff68967	1363	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
hexley	0:281d6ff68967	1364	}
hexley	0:281d6ff68967	1365	}
hexley	0:281d6ff68967	1366
hexley	0:281d6ff68967	1367	return st;
hexley	0:281d6ff68967	1368	}
hexley	0:281d6ff68967	1369
hexley	0:281d6ff68967	1370	/*
hexley	0:281d6ff68967	1371	* sifnpmode - Set the mode for handling packets for a given NP.
hexley	0:281d6ff68967	1372	*/
hexley	0:281d6ff68967	1373	int
hexley	0:281d6ff68967	1374	sifnpmode(int u, int proto, enum NPmode mode)
hexley	0:281d6ff68967	1375	{
hexley	0:281d6ff68967	1376	LWIP_UNUSED_ARG(u);
hexley	0:281d6ff68967	1377	LWIP_UNUSED_ARG(proto);
hexley	0:281d6ff68967	1378	LWIP_UNUSED_ARG(mode);
hexley	0:281d6ff68967	1379	return 0;
hexley	0:281d6ff68967	1380	}
hexley	0:281d6ff68967	1381
hexley	0:281d6ff68967	1382	/*
hexley	0:281d6ff68967	1383	* sifdown - Config the interface down and disable IP.
hexley	0:281d6ff68967	1384	*/
hexley	0:281d6ff68967	1385	int
hexley	0:281d6ff68967	1386	sifdown(int pd)
hexley	0:281d6ff68967	1387	{
hexley	0:281d6ff68967	1388	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	1389	int st = 1;
hexley	0:281d6ff68967	1390
hexley	0:281d6ff68967	1391	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
hexley	0:281d6ff68967	1392	st = 0;
hexley	0:281d6ff68967	1393	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
hexley	0:281d6ff68967	1394	} else {
hexley	0:281d6ff68967	1395	pc->if_up = 0;
hexley	0:281d6ff68967	1396	/* make sure the netif status callback is called */
hexley	0:281d6ff68967	1397	netif_set_down(&pc->netif);
hexley	0:281d6ff68967	1398	netif_remove(&pc->netif);
hexley	0:281d6ff68967	1399	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
hexley	0:281d6ff68967	1400	if (pc->linkStatusCB) {
hexley	0:281d6ff68967	1401	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
hexley	0:281d6ff68967	1402	}
hexley	0:281d6ff68967	1403	}
hexley	0:281d6ff68967	1404	return st;
hexley	0:281d6ff68967	1405	}
hexley	0:281d6ff68967	1406
hexley	0:281d6ff68967	1407	/**
hexley	0:281d6ff68967	1408	* sifaddr - Config the interface IP addresses and netmask.
hexley	0:281d6ff68967	1409	* @param pd Interface unit ???
hexley	0:281d6ff68967	1410	* @param o Our IP address ???
hexley	0:281d6ff68967	1411	* @param h His IP address ???
hexley	0:281d6ff68967	1412	* @param m IP subnet mask ???
hexley	0:281d6ff68967	1413	* @param ns1 Primary DNS
hexley	0:281d6ff68967	1414	* @param ns2 Secondary DNS
hexley	0:281d6ff68967	1415	*/
hexley	0:281d6ff68967	1416	int
hexley	0:281d6ff68967	1417	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
hexley	0:281d6ff68967	1418	{
hexley	0:281d6ff68967	1419	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	1420	int st = 1;
hexley	0:281d6ff68967	1421
hexley	0:281d6ff68967	1422	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
hexley	0:281d6ff68967	1423	st = 0;
hexley	0:281d6ff68967	1424	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
hexley	0:281d6ff68967	1425	} else {
hexley	0:281d6ff68967	1426	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
hexley	0:281d6ff68967	1427	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
hexley	0:281d6ff68967	1428	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
hexley	0:281d6ff68967	1429	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
hexley	0:281d6ff68967	1430	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
hexley	0:281d6ff68967	1431	}
hexley	0:281d6ff68967	1432	return st;
hexley	0:281d6ff68967	1433	}
hexley	0:281d6ff68967	1434
hexley	0:281d6ff68967	1435	/**
hexley	0:281d6ff68967	1436	* cifaddr - Clear the interface IP addresses, and delete routes
hexley	0:281d6ff68967	1437	* through the interface if possible.
hexley	0:281d6ff68967	1438	* @param pd Interface unit ???
hexley	0:281d6ff68967	1439	* @param o Our IP address ???
hexley	0:281d6ff68967	1440	* @param h IP broadcast address ???
hexley	0:281d6ff68967	1441	*/
hexley	0:281d6ff68967	1442	int
hexley	0:281d6ff68967	1443	cifaddr( int pd, u32_t o, u32_t h)
hexley	0:281d6ff68967	1444	{
hexley	0:281d6ff68967	1445	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	1446	int st = 1;
hexley	0:281d6ff68967	1447
hexley	0:281d6ff68967	1448	LWIP_UNUSED_ARG(o);
hexley	0:281d6ff68967	1449	LWIP_UNUSED_ARG(h);
hexley	0:281d6ff68967	1450	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
hexley	0:281d6ff68967	1451	st = 0;
hexley	0:281d6ff68967	1452	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
hexley	0:281d6ff68967	1453	} else {
hexley	0:281d6ff68967	1454	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
hexley	0:281d6ff68967	1455	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
hexley	0:281d6ff68967	1456	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
hexley	0:281d6ff68967	1457	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
hexley	0:281d6ff68967	1458	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
hexley	0:281d6ff68967	1459	}
hexley	0:281d6ff68967	1460	return st;
hexley	0:281d6ff68967	1461	}
hexley	0:281d6ff68967	1462
hexley	0:281d6ff68967	1463	/*
hexley	0:281d6ff68967	1464	* sifdefaultroute - assign a default route through the address given.
hexley	0:281d6ff68967	1465	*/
hexley	0:281d6ff68967	1466	int
hexley	0:281d6ff68967	1467	sifdefaultroute(int pd, u32_t l, u32_t g)
hexley	0:281d6ff68967	1468	{
hexley	0:281d6ff68967	1469	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	1470	int st = 1;
hexley	0:281d6ff68967	1471
hexley	0:281d6ff68967	1472	LWIP_UNUSED_ARG(l);
hexley	0:281d6ff68967	1473	LWIP_UNUSED_ARG(g);
hexley	0:281d6ff68967	1474
hexley	0:281d6ff68967	1475	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
hexley	0:281d6ff68967	1476	st = 0;
hexley	0:281d6ff68967	1477	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
hexley	0:281d6ff68967	1478	} else {
hexley	0:281d6ff68967	1479	netif_set_default(&pc->netif);
hexley	0:281d6ff68967	1480	}
hexley	0:281d6ff68967	1481
hexley	0:281d6ff68967	1482	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
hexley	0:281d6ff68967	1483
hexley	0:281d6ff68967	1484	return st;
hexley	0:281d6ff68967	1485	}
hexley	0:281d6ff68967	1486
hexley	0:281d6ff68967	1487	/*
hexley	0:281d6ff68967	1488	* cifdefaultroute - delete a default route through the address given.
hexley	0:281d6ff68967	1489	*/
hexley	0:281d6ff68967	1490	int
hexley	0:281d6ff68967	1491	cifdefaultroute(int pd, u32_t l, u32_t g)
hexley	0:281d6ff68967	1492	{
hexley	0:281d6ff68967	1493	PPPControl *pc = &pppControl[pd];
hexley	0:281d6ff68967	1494	int st = 1;
hexley	0:281d6ff68967	1495
hexley	0:281d6ff68967	1496	LWIP_UNUSED_ARG(l);
hexley	0:281d6ff68967	1497	LWIP_UNUSED_ARG(g);
hexley	0:281d6ff68967	1498
hexley	0:281d6ff68967	1499	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
hexley	0:281d6ff68967	1500	st = 0;
hexley	0:281d6ff68967	1501	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
hexley	0:281d6ff68967	1502	} else {
hexley	0:281d6ff68967	1503	netif_set_default(NULL);
hexley	0:281d6ff68967	1504	}
hexley	0:281d6ff68967	1505
hexley	0:281d6ff68967	1506	return st;
hexley	0:281d6ff68967	1507	}
hexley	0:281d6ff68967	1508
hexley	0:281d6ff68967	1509	/**********************************/
hexley	0:281d6ff68967	1510	/* LOCAL FUNCTION DEFINITIONS */
hexley	0:281d6ff68967	1511	/**********************************/
hexley	0:281d6ff68967	1512
hexley	0:281d6ff68967	1513	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
hexley	0:281d6ff68967	1514	/* The main PPP process function. This implements the state machine according
hexley	0:281d6ff68967	1515	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
hexley	0:281d6ff68967	1516	static void
hexley	0:281d6ff68967	1517	pppInputThread(void *arg)
hexley	0:281d6ff68967	1518	{
hexley	0:281d6ff68967	1519	int count;
hexley	0:281d6ff68967	1520	PPPControlRx *pcrx = arg;
hexley	0:281d6ff68967	1521
hexley	0:281d6ff68967	1522	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
hexley	0:281d6ff68967	1523	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
hexley	0:281d6ff68967	1524	if(count > 0) {
hexley	0:281d6ff68967	1525	pppInProc(pcrx, pcrx->rxbuf, count);
hexley	0:281d6ff68967	1526	} else {
hexley	0:281d6ff68967	1527	/* nothing received, give other tasks a chance to run */
hexley	0:281d6ff68967	1528	sys_msleep(1);
hexley	0:281d6ff68967	1529	}
hexley	0:281d6ff68967	1530	}
hexley	0:281d6ff68967	1531	}
hexley	0:281d6ff68967	1532	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
hexley	0:281d6ff68967	1533
hexley	0:281d6ff68967	1534	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	1535
hexley	0:281d6ff68967	1536	void
hexley	0:281d6ff68967	1537	pppOverEthernetInitFailed(int pd)
hexley	0:281d6ff68967	1538	{
hexley	0:281d6ff68967	1539	PPPControl* pc;
hexley	0:281d6ff68967	1540
hexley	0:281d6ff68967	1541	pppHup(pd);
hexley	0:281d6ff68967	1542	pppStop(pd);
hexley	0:281d6ff68967	1543
hexley	0:281d6ff68967	1544	pc = &pppControl[pd];
hexley	0:281d6ff68967	1545	pppoe_destroy(&pc->netif);
hexley	0:281d6ff68967	1546	pc->openFlag = 0;
hexley	0:281d6ff68967	1547
hexley	0:281d6ff68967	1548	if(pc->linkStatusCB) {
hexley	0:281d6ff68967	1549	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
hexley	0:281d6ff68967	1550	}
hexley	0:281d6ff68967	1551	}
hexley	0:281d6ff68967	1552
hexley	0:281d6ff68967	1553	static void
hexley	0:281d6ff68967	1554	pppOverEthernetLinkStatusCB(int pd, int up)
hexley	0:281d6ff68967	1555	{
hexley	0:281d6ff68967	1556	if(up) {
hexley	0:281d6ff68967	1557	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
hexley	0:281d6ff68967	1558	pppStart(pd);
hexley	0:281d6ff68967	1559	} else {
hexley	0:281d6ff68967	1560	pppOverEthernetInitFailed(pd);
hexley	0:281d6ff68967	1561	}
hexley	0:281d6ff68967	1562	}
hexley	0:281d6ff68967	1563	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	1564
hexley	0:281d6ff68967	1565	struct pbuf *
hexley	0:281d6ff68967	1566	pppSingleBuf(struct pbuf *p)
hexley	0:281d6ff68967	1567	{
hexley	0:281d6ff68967	1568	struct pbuf q, b;
hexley	0:281d6ff68967	1569	u_char *pl;
hexley	0:281d6ff68967	1570
hexley	0:281d6ff68967	1571	if(p->tot_len == p->len) {
hexley	0:281d6ff68967	1572	return p;
hexley	0:281d6ff68967	1573	}
hexley	0:281d6ff68967	1574
hexley	0:281d6ff68967	1575	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
hexley	0:281d6ff68967	1576	if(!q) {
hexley	0:281d6ff68967	1577	PPPDEBUG(LOG_ERR,
hexley	0:281d6ff68967	1578	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
hexley	0:281d6ff68967	1579	return p; /* live dangerously */
hexley	0:281d6ff68967	1580	}
hexley	0:281d6ff68967	1581
hexley	0:281d6ff68967	1582	for(b = p, pl = (u_char *) q->payload; b != NULL; b = b->next) {
hexley	0:281d6ff68967	1583	MEMCPY(pl, b->payload, b->len);
hexley	0:281d6ff68967	1584	pl += b->len;
hexley	0:281d6ff68967	1585	}
hexley	0:281d6ff68967	1586
hexley	0:281d6ff68967	1587	pbuf_free(p);
hexley	0:281d6ff68967	1588
hexley	0:281d6ff68967	1589	return q;
hexley	0:281d6ff68967	1590	}
hexley	0:281d6ff68967	1591
hexley	0:281d6ff68967	1592	struct pppInputHeader {
hexley	0:281d6ff68967	1593	int unit;
hexley	0:281d6ff68967	1594	u16_t proto;
hexley	0:281d6ff68967	1595	};
hexley	0:281d6ff68967	1596
hexley	0:281d6ff68967	1597	/*
hexley	0:281d6ff68967	1598	* Pass the processed input packet to the appropriate handler.
hexley	0:281d6ff68967	1599	* This function and all handlers run in the context of the tcpip_thread
hexley	0:281d6ff68967	1600	*/
hexley	0:281d6ff68967	1601	static void
hexley	0:281d6ff68967	1602	pppInput(void *arg)
hexley	0:281d6ff68967	1603	{
hexley	0:281d6ff68967	1604	struct pbuf nb = (struct pbuf )arg;
hexley	0:281d6ff68967	1605	u16_t protocol;
hexley	0:281d6ff68967	1606	int pd;
hexley	0:281d6ff68967	1607
hexley	0:281d6ff68967	1608	pd = ((struct pppInputHeader *)nb->payload)->unit;
hexley	0:281d6ff68967	1609	protocol = ((struct pppInputHeader *)nb->payload)->proto;
hexley	0:281d6ff68967	1610
hexley	0:281d6ff68967	1611	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
hexley	0:281d6ff68967	1612	LWIP_ASSERT("pbuf_header failed\n", 0);
hexley	0:281d6ff68967	1613	goto drop;
hexley	0:281d6ff68967	1614	}
hexley	0:281d6ff68967	1615
hexley	0:281d6ff68967	1616	LINK_STATS_INC(link.recv);
hexley	0:281d6ff68967	1617	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
hexley	0:281d6ff68967	1618	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
hexley	0:281d6ff68967	1619
hexley	0:281d6ff68967	1620	/*
hexley	0:281d6ff68967	1621	* Toss all non-LCP packets unless LCP is OPEN.
hexley	0:281d6ff68967	1622	* Until we get past the authentication phase, toss all packets
hexley	0:281d6ff68967	1623	* except LCP, LQR and authentication packets.
hexley	0:281d6ff68967	1624	*/
hexley	0:281d6ff68967	1625	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
hexley	0:281d6ff68967	1626	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
hexley	0:281d6ff68967	1627	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
hexley	0:281d6ff68967	1628	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
hexley	0:281d6ff68967	1629	goto drop;
hexley	0:281d6ff68967	1630	}
hexley	0:281d6ff68967	1631	}
hexley	0:281d6ff68967	1632
hexley	0:281d6ff68967	1633	switch(protocol) {
hexley	0:281d6ff68967	1634	case PPP_VJC_COMP: /* VJ compressed TCP */
hexley	0:281d6ff68967	1635	#if PPPOS_SUPPORT && VJ_SUPPORT
hexley	0:281d6ff68967	1636	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
hexley	0:281d6ff68967	1637	/*
hexley	0:281d6ff68967	1638	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
hexley	0:281d6ff68967	1639	* pass the result to IP.
hexley	0:281d6ff68967	1640	*/
hexley	0:281d6ff68967	1641	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
hexley	0:281d6ff68967	1642	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
hexley	0:281d6ff68967	1643	return;
hexley	0:281d6ff68967	1644	}
hexley	0:281d6ff68967	1645	/* Something's wrong so drop it. */
hexley	0:281d6ff68967	1646	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
hexley	0:281d6ff68967	1647	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
hexley	0:281d6ff68967	1648	/* No handler for this protocol so drop the packet. */
hexley	0:281d6ff68967	1649	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
hexley	0:281d6ff68967	1650	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
hexley	0:281d6ff68967	1651	break;
hexley	0:281d6ff68967	1652
hexley	0:281d6ff68967	1653	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
hexley	0:281d6ff68967	1654	#if PPPOS_SUPPORT && VJ_SUPPORT
hexley	0:281d6ff68967	1655	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
hexley	0:281d6ff68967	1656	/*
hexley	0:281d6ff68967	1657	* Process the TCP/IP header for VJ header compression and then pass
hexley	0:281d6ff68967	1658	* the packet to IP.
hexley	0:281d6ff68967	1659	*/
hexley	0:281d6ff68967	1660	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
hexley	0:281d6ff68967	1661	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
hexley	0:281d6ff68967	1662	return;
hexley	0:281d6ff68967	1663	}
hexley	0:281d6ff68967	1664	/* Something's wrong so drop it. */
hexley	0:281d6ff68967	1665	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
hexley	0:281d6ff68967	1666	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
hexley	0:281d6ff68967	1667	/* No handler for this protocol so drop the packet. */
hexley	0:281d6ff68967	1668	PPPDEBUG(LOG_INFO,
hexley	0:281d6ff68967	1669	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
hexley	0:281d6ff68967	1670	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
hexley	0:281d6ff68967	1671	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
hexley	0:281d6ff68967	1672	break;
hexley	0:281d6ff68967	1673
hexley	0:281d6ff68967	1674	case PPP_IP: /* Internet Protocol */
hexley	0:281d6ff68967	1675	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
hexley	0:281d6ff68967	1676	if (pppControl[pd].netif.input) {
hexley	0:281d6ff68967	1677	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
hexley	0:281d6ff68967	1678	return;
hexley	0:281d6ff68967	1679	}
hexley	0:281d6ff68967	1680	break;
hexley	0:281d6ff68967	1681
hexley	0:281d6ff68967	1682	default: {
hexley	0:281d6ff68967	1683	struct protent *protp;
hexley	0:281d6ff68967	1684	int i;
hexley	0:281d6ff68967	1685
hexley	0:281d6ff68967	1686	/*
hexley	0:281d6ff68967	1687	* Upcall the proper protocol input routine.
hexley	0:281d6ff68967	1688	*/
hexley	0:281d6ff68967	1689	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
hexley	0:281d6ff68967	1690	if (protp->protocol == protocol && protp->enabled_flag) {
hexley	0:281d6ff68967	1691	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
hexley	0:281d6ff68967	1692	nb = pppSingleBuf(nb);
hexley	0:281d6ff68967	1693	(protp->input)(pd, (u_char )nb->payload, nb->len);
hexley	0:281d6ff68967	1694	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
hexley	0:281d6ff68967	1695	goto out;
hexley	0:281d6ff68967	1696	}
hexley	0:281d6ff68967	1697	}
hexley	0:281d6ff68967	1698
hexley	0:281d6ff68967	1699	/* No handler for this protocol so reject the packet. */
hexley	0:281d6ff68967	1700	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
hexley	0:281d6ff68967	1701	if (pbuf_header(nb, sizeof(protocol))) {
hexley	0:281d6ff68967	1702	LWIP_ASSERT("pbuf_header failed\n", 0);
hexley	0:281d6ff68967	1703	goto drop;
hexley	0:281d6ff68967	1704	}
hexley	0:281d6ff68967	1705	#if BYTE_ORDER == LITTLE_ENDIAN
hexley	0:281d6ff68967	1706	protocol = htons(protocol);
hexley	0:281d6ff68967	1707	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
hexley	0:281d6ff68967	1708	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
hexley	0:281d6ff68967	1709	lcp_sprotrej(pd, (u_char *)nb->payload, nb->len);
hexley	0:281d6ff68967	1710	}
hexley	0:281d6ff68967	1711	break;
hexley	0:281d6ff68967	1712	}
hexley	0:281d6ff68967	1713
hexley	0:281d6ff68967	1714	drop:
hexley	0:281d6ff68967	1715	LINK_STATS_INC(link.drop);
hexley	0:281d6ff68967	1716	snmp_inc_ifindiscards(&pppControl[pd].netif);
hexley	0:281d6ff68967	1717
hexley	0:281d6ff68967	1718	out:
hexley	0:281d6ff68967	1719	pbuf_free(nb);
hexley	0:281d6ff68967	1720	return;
hexley	0:281d6ff68967	1721	}
hexley	0:281d6ff68967	1722
hexley	0:281d6ff68967	1723	#if PPPOS_SUPPORT
hexley	0:281d6ff68967	1724	/*
hexley	0:281d6ff68967	1725	* Drop the input packet.
hexley	0:281d6ff68967	1726	*/
hexley	0:281d6ff68967	1727	static void
hexley	0:281d6ff68967	1728	pppDrop(PPPControlRx *pcrx)
hexley	0:281d6ff68967	1729	{
hexley	0:281d6ff68967	1730	if (pcrx->inHead != NULL) {
hexley	0:281d6ff68967	1731	#if 0
hexley	0:281d6ff68967	1732	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
hexley	0:281d6ff68967	1733	#endif
hexley	0:281d6ff68967	1734	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
hexley	0:281d6ff68967	1735	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
hexley	0:281d6ff68967	1736	pbuf_free(pcrx->inTail);
hexley	0:281d6ff68967	1737	}
hexley	0:281d6ff68967	1738	pbuf_free(pcrx->inHead);
hexley	0:281d6ff68967	1739	pcrx->inHead = NULL;
hexley	0:281d6ff68967	1740	pcrx->inTail = NULL;
hexley	0:281d6ff68967	1741	}
hexley	0:281d6ff68967	1742	#if VJ_SUPPORT
hexley	0:281d6ff68967	1743	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
hexley	0:281d6ff68967	1744	#endif /* VJ_SUPPORT */
hexley	0:281d6ff68967	1745
hexley	0:281d6ff68967	1746	LINK_STATS_INC(link.drop);
hexley	0:281d6ff68967	1747	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
hexley	0:281d6ff68967	1748	}
hexley	0:281d6ff68967	1749
hexley	0:281d6ff68967	1750	/** Pass received raw characters to PPPoS to be decoded. This function is
hexley	0:281d6ff68967	1751	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
hexley	0:281d6ff68967	1752	*
hexley	0:281d6ff68967	1753	* @param pd PPP descriptor index, returned by pppOpen()
hexley	0:281d6ff68967	1754	* @param data received data
hexley	0:281d6ff68967	1755	* @param len length of received data
hexley	0:281d6ff68967	1756	*/
hexley	0:281d6ff68967	1757	void
hexley	0:281d6ff68967	1758	pppos_input(int pd, u_char* data, int len)
hexley	0:281d6ff68967	1759	{
hexley	0:281d6ff68967	1760	pppInProc(&pppControl[pd].rx, data, len);
hexley	0:281d6ff68967	1761	}
hexley	0:281d6ff68967	1762
hexley	0:281d6ff68967	1763	/**
hexley	0:281d6ff68967	1764	* Process a received octet string.
hexley	0:281d6ff68967	1765	*/
hexley	0:281d6ff68967	1766	static void
hexley	0:281d6ff68967	1767	pppInProc(PPPControlRx pcrx, u_char s, int l)
hexley	0:281d6ff68967	1768	{
hexley	0:281d6ff68967	1769	struct pbuf *nextNBuf;
hexley	0:281d6ff68967	1770	u_char curChar;
hexley	0:281d6ff68967	1771	u_char escaped;
hexley	0:281d6ff68967	1772	SYS_ARCH_DECL_PROTECT(lev);
hexley	0:281d6ff68967	1773
hexley	0:281d6ff68967	1774	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
hexley	0:281d6ff68967	1775	while (l-- > 0) {
hexley	0:281d6ff68967	1776	curChar = *s++;
hexley	0:281d6ff68967	1777
hexley	0:281d6ff68967	1778	SYS_ARCH_PROTECT(lev);
hexley	0:281d6ff68967	1779	escaped = ESCAPE_P(pcrx->inACCM, curChar);
hexley	0:281d6ff68967	1780	SYS_ARCH_UNPROTECT(lev);
hexley	0:281d6ff68967	1781	/* Handle special characters. */
hexley	0:281d6ff68967	1782	if (escaped) {
hexley	0:281d6ff68967	1783	/* Check for escape sequences. */
hexley	0:281d6ff68967	1784	/* XXX Note that this does not handle an escaped 0x5d character which
hexley	0:281d6ff68967	1785	* would appear as an escape character. Since this is an ASCII ']'
hexley	0:281d6ff68967	1786	* and there is no reason that I know of to escape it, I won't complicate
hexley	0:281d6ff68967	1787	* the code to handle this case. GLL */
hexley	0:281d6ff68967	1788	if (curChar == PPP_ESCAPE) {
hexley	0:281d6ff68967	1789	pcrx->inEscaped = 1;
hexley	0:281d6ff68967	1790	/* Check for the flag character. */
hexley	0:281d6ff68967	1791	} else if (curChar == PPP_FLAG) {
hexley	0:281d6ff68967	1792	/* If this is just an extra flag character, ignore it. */
hexley	0:281d6ff68967	1793	if (pcrx->inState <= PDADDRESS) {
hexley	0:281d6ff68967	1794	/* ignore it */;
hexley	0:281d6ff68967	1795	/* If we haven't received the packet header, drop what has come in. */
hexley	0:281d6ff68967	1796	} else if (pcrx->inState < PDDATA) {
hexley	0:281d6ff68967	1797	PPPDEBUG(LOG_WARNING,
hexley	0:281d6ff68967	1798	("pppInProc[%d]: Dropping incomplete packet %d\n",
hexley	0:281d6ff68967	1799	pcrx->pd, pcrx->inState));
hexley	0:281d6ff68967	1800	LINK_STATS_INC(link.lenerr);
hexley	0:281d6ff68967	1801	pppDrop(pcrx);
hexley	0:281d6ff68967	1802	/* If the fcs is invalid, drop the packet. */
hexley	0:281d6ff68967	1803	} else if (pcrx->inFCS != PPP_GOODFCS) {
hexley	0:281d6ff68967	1804	PPPDEBUG(LOG_INFO,
hexley	0:281d6ff68967	1805	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
hexley	0:281d6ff68967	1806	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
hexley	0:281d6ff68967	1807	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
hexley	0:281d6ff68967	1808	LINK_STATS_INC(link.chkerr);
hexley	0:281d6ff68967	1809	pppDrop(pcrx);
hexley	0:281d6ff68967	1810	/* Otherwise it's a good packet so pass it on. */
hexley	0:281d6ff68967	1811	} else {
hexley	0:281d6ff68967	1812	/* Trim off the checksum. */
hexley	0:281d6ff68967	1813	if(pcrx->inTail->len >= 2) {
hexley	0:281d6ff68967	1814	pcrx->inTail->len -= 2;
hexley	0:281d6ff68967	1815
hexley	0:281d6ff68967	1816	pcrx->inTail->tot_len = pcrx->inTail->len;
hexley	0:281d6ff68967	1817	if (pcrx->inTail != pcrx->inHead) {
hexley	0:281d6ff68967	1818	pbuf_cat(pcrx->inHead, pcrx->inTail);
hexley	0:281d6ff68967	1819	}
hexley	0:281d6ff68967	1820	} else {
hexley	0:281d6ff68967	1821	pcrx->inTail->tot_len = pcrx->inTail->len;
hexley	0:281d6ff68967	1822	if (pcrx->inTail != pcrx->inHead) {
hexley	0:281d6ff68967	1823	pbuf_cat(pcrx->inHead, pcrx->inTail);
hexley	0:281d6ff68967	1824	}
hexley	0:281d6ff68967	1825
hexley	0:281d6ff68967	1826	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
hexley	0:281d6ff68967	1827	}
hexley	0:281d6ff68967	1828
hexley	0:281d6ff68967	1829	/* Dispatch the packet thereby consuming it. */
hexley	0:281d6ff68967	1830	#if PPP_INPROC_MULTITHREADED
hexley	0:281d6ff68967	1831	if(tcpip_callback_with_block(pppInput, pcrx->inHead, 0) != ERR_OK) {
hexley	0:281d6ff68967	1832	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
hexley	0:281d6ff68967	1833	pbuf_free(pcrx->inHead);
hexley	0:281d6ff68967	1834	LINK_STATS_INC(link.drop);
hexley	0:281d6ff68967	1835	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
hexley	0:281d6ff68967	1836	}
hexley	0:281d6ff68967	1837	#else /* PPP_INPROC_MULTITHREADED */
hexley	0:281d6ff68967	1838	pppInput(pcrx->inHead);
hexley	0:281d6ff68967	1839	#endif /* PPP_INPROC_MULTITHREADED */
hexley	0:281d6ff68967	1840	pcrx->inHead = NULL;
hexley	0:281d6ff68967	1841	pcrx->inTail = NULL;
hexley	0:281d6ff68967	1842	}
hexley	0:281d6ff68967	1843
hexley	0:281d6ff68967	1844	/* Prepare for a new packet. */
hexley	0:281d6ff68967	1845	pcrx->inFCS = PPP_INITFCS;
hexley	0:281d6ff68967	1846	pcrx->inState = PDADDRESS;
hexley	0:281d6ff68967	1847	pcrx->inEscaped = 0;
hexley	0:281d6ff68967	1848	/* Other characters are usually control characters that may have
hexley	0:281d6ff68967	1849	* been inserted by the physical layer so here we just drop them. */
hexley	0:281d6ff68967	1850	} else {
hexley	0:281d6ff68967	1851	PPPDEBUG(LOG_WARNING,
hexley	0:281d6ff68967	1852	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
hexley	0:281d6ff68967	1853	}
hexley	0:281d6ff68967	1854	/* Process other characters. */
hexley	0:281d6ff68967	1855	} else {
hexley	0:281d6ff68967	1856	/* Unencode escaped characters. */
hexley	0:281d6ff68967	1857	if (pcrx->inEscaped) {
hexley	0:281d6ff68967	1858	pcrx->inEscaped = 0;
hexley	0:281d6ff68967	1859	curChar ^= PPP_TRANS;
hexley	0:281d6ff68967	1860	}
hexley	0:281d6ff68967	1861
hexley	0:281d6ff68967	1862	/* Process character relative to current state. */
hexley	0:281d6ff68967	1863	switch(pcrx->inState) {
hexley	0:281d6ff68967	1864	case PDIDLE: /* Idle state - waiting. */
hexley	0:281d6ff68967	1865	/* Drop the character if it's not 0xff
hexley	0:281d6ff68967	1866	* we would have processed a flag character above. */
hexley	0:281d6ff68967	1867	if (curChar != PPP_ALLSTATIONS) {
hexley	0:281d6ff68967	1868	break;
hexley	0:281d6ff68967	1869	}
hexley	0:281d6ff68967	1870
hexley	0:281d6ff68967	1871	/* Fall through */
hexley	0:281d6ff68967	1872	case PDSTART: /* Process start flag. */
hexley	0:281d6ff68967	1873	/* Prepare for a new packet. */
hexley	0:281d6ff68967	1874	pcrx->inFCS = PPP_INITFCS;
hexley	0:281d6ff68967	1875
hexley	0:281d6ff68967	1876	/* Fall through */
hexley	0:281d6ff68967	1877	case PDADDRESS: /* Process address field. */
hexley	0:281d6ff68967	1878	if (curChar == PPP_ALLSTATIONS) {
hexley	0:281d6ff68967	1879	pcrx->inState = PDCONTROL;
hexley	0:281d6ff68967	1880	break;
hexley	0:281d6ff68967	1881	}
hexley	0:281d6ff68967	1882	/* Else assume compressed address and control fields so
hexley	0:281d6ff68967	1883	* fall through to get the protocol... */
hexley	0:281d6ff68967	1884	case PDCONTROL: /* Process control field. */
hexley	0:281d6ff68967	1885	/* If we don't get a valid control code, restart. */
hexley	0:281d6ff68967	1886	if (curChar == PPP_UI) {
hexley	0:281d6ff68967	1887	pcrx->inState = PDPROTOCOL1;
hexley	0:281d6ff68967	1888	break;
hexley	0:281d6ff68967	1889	}
hexley	0:281d6ff68967	1890	#if 0
hexley	0:281d6ff68967	1891	else {
hexley	0:281d6ff68967	1892	PPPDEBUG(LOG_WARNING,
hexley	0:281d6ff68967	1893	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
hexley	0:281d6ff68967	1894	pcrx->inState = PDSTART;
hexley	0:281d6ff68967	1895	}
hexley	0:281d6ff68967	1896	#endif
hexley	0:281d6ff68967	1897	case PDPROTOCOL1: /* Process protocol field 1. */
hexley	0:281d6ff68967	1898	/* If the lower bit is set, this is the end of the protocol
hexley	0:281d6ff68967	1899	* field. */
hexley	0:281d6ff68967	1900	if (curChar & 1) {
hexley	0:281d6ff68967	1901	pcrx->inProtocol = curChar;
hexley	0:281d6ff68967	1902	pcrx->inState = PDDATA;
hexley	0:281d6ff68967	1903	} else {
hexley	0:281d6ff68967	1904	pcrx->inProtocol = (u_int)curChar << 8;
hexley	0:281d6ff68967	1905	pcrx->inState = PDPROTOCOL2;
hexley	0:281d6ff68967	1906	}
hexley	0:281d6ff68967	1907	break;
hexley	0:281d6ff68967	1908	case PDPROTOCOL2: /* Process protocol field 2. */
hexley	0:281d6ff68967	1909	pcrx->inProtocol \|= curChar;
hexley	0:281d6ff68967	1910	pcrx->inState = PDDATA;
hexley	0:281d6ff68967	1911	break;
hexley	0:281d6ff68967	1912	case PDDATA: /* Process data byte. */
hexley	0:281d6ff68967	1913	/* Make space to receive processed data. */
hexley	0:281d6ff68967	1914	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
hexley	0:281d6ff68967	1915	if(pcrx->inTail) {
hexley	0:281d6ff68967	1916	pcrx->inTail->tot_len = pcrx->inTail->len;
hexley	0:281d6ff68967	1917	if (pcrx->inTail != pcrx->inHead) {
hexley	0:281d6ff68967	1918	pbuf_cat(pcrx->inHead, pcrx->inTail);
hexley	0:281d6ff68967	1919	}
hexley	0:281d6ff68967	1920	}
hexley	0:281d6ff68967	1921	/* If we haven't started a packet, we need a packet header. */
hexley	0:281d6ff68967	1922	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
hexley	0:281d6ff68967	1923	if (nextNBuf == NULL) {
hexley	0:281d6ff68967	1924	/* No free buffers. Drop the input packet and let the
hexley	0:281d6ff68967	1925	* higher layers deal with it. Continue processing
hexley	0:281d6ff68967	1926	* the received pbuf chain in case a new packet starts. */
hexley	0:281d6ff68967	1927	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
hexley	0:281d6ff68967	1928	LINK_STATS_INC(link.memerr);
hexley	0:281d6ff68967	1929	pppDrop(pcrx);
hexley	0:281d6ff68967	1930	pcrx->inState = PDSTART; /* Wait for flag sequence. */
hexley	0:281d6ff68967	1931	break;
hexley	0:281d6ff68967	1932	}
hexley	0:281d6ff68967	1933	if (pcrx->inHead == NULL) {
hexley	0:281d6ff68967	1934	struct pppInputHeader pih = (struct pppInputHeader )nextNBuf->payload;
hexley	0:281d6ff68967	1935
hexley	0:281d6ff68967	1936	pih->unit = pcrx->pd;
hexley	0:281d6ff68967	1937	pih->proto = pcrx->inProtocol;
hexley	0:281d6ff68967	1938
hexley	0:281d6ff68967	1939	nextNBuf->len += sizeof(*pih);
hexley	0:281d6ff68967	1940
hexley	0:281d6ff68967	1941	pcrx->inHead = nextNBuf;
hexley	0:281d6ff68967	1942	}
hexley	0:281d6ff68967	1943	pcrx->inTail = nextNBuf;
hexley	0:281d6ff68967	1944	}
hexley	0:281d6ff68967	1945	/* Load character into buffer. */
hexley	0:281d6ff68967	1946	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
hexley	0:281d6ff68967	1947	break;
hexley	0:281d6ff68967	1948	}
hexley	0:281d6ff68967	1949
hexley	0:281d6ff68967	1950	/* update the frame check sequence number. */
hexley	0:281d6ff68967	1951	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
hexley	0:281d6ff68967	1952	}
hexley	0:281d6ff68967	1953	} /* while (l-- > 0), all bytes processed */
hexley	0:281d6ff68967	1954
hexley	0:281d6ff68967	1955	avRandomize();
hexley	0:281d6ff68967	1956	}
hexley	0:281d6ff68967	1957	#endif /* PPPOS_SUPPORT */
hexley	0:281d6ff68967	1958
hexley	0:281d6ff68967	1959	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	1960	void
hexley	0:281d6ff68967	1961	pppInProcOverEthernet(int pd, struct pbuf *pb)
hexley	0:281d6ff68967	1962	{
hexley	0:281d6ff68967	1963	struct pppInputHeader *pih;
hexley	0:281d6ff68967	1964	u16_t inProtocol;
hexley	0:281d6ff68967	1965
hexley	0:281d6ff68967	1966	if(pb->len < sizeof(inProtocol)) {
hexley	0:281d6ff68967	1967	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
hexley	0:281d6ff68967	1968	goto drop;
hexley	0:281d6ff68967	1969	}
hexley	0:281d6ff68967	1970
hexley	0:281d6ff68967	1971	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
hexley	0:281d6ff68967	1972
hexley	0:281d6ff68967	1973	/* make room for pppInputHeader - should not fail */
hexley	0:281d6ff68967	1974	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
hexley	0:281d6ff68967	1975	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
hexley	0:281d6ff68967	1976	goto drop;
hexley	0:281d6ff68967	1977	}
hexley	0:281d6ff68967	1978
hexley	0:281d6ff68967	1979	pih = pb->payload;
hexley	0:281d6ff68967	1980
hexley	0:281d6ff68967	1981	pih->unit = pd;
hexley	0:281d6ff68967	1982	pih->proto = inProtocol;
hexley	0:281d6ff68967	1983
hexley	0:281d6ff68967	1984	/* Dispatch the packet thereby consuming it. */
hexley	0:281d6ff68967	1985	pppInput(pb);
hexley	0:281d6ff68967	1986	return;
hexley	0:281d6ff68967	1987
hexley	0:281d6ff68967	1988	drop:
hexley	0:281d6ff68967	1989	LINK_STATS_INC(link.drop);
hexley	0:281d6ff68967	1990	snmp_inc_ifindiscards(&pppControl[pd].netif);
hexley	0:281d6ff68967	1991	pbuf_free(pb);
hexley	0:281d6ff68967	1992	return;
hexley	0:281d6ff68967	1993	}
hexley	0:281d6ff68967	1994	#endif /* PPPOE_SUPPORT */
hexley	0:281d6ff68967	1995
hexley	0:281d6ff68967	1996	#if LWIP_NETIF_STATUS_CALLBACK
hexley	0:281d6ff68967	1997	/** Set the status callback of a PPP's netif
hexley	0:281d6ff68967	1998	*
hexley	0:281d6ff68967	1999	* @param pd The PPP descriptor returned by pppOpen()
hexley	0:281d6ff68967	2000	* @param status_callback pointer to the status callback function
hexley	0:281d6ff68967	2001	*
hexley	0:281d6ff68967	2002	* @see netif_set_status_callback
hexley	0:281d6ff68967	2003	*/
hexley	0:281d6ff68967	2004	void
hexley	0:281d6ff68967	2005	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
hexley	0:281d6ff68967	2006	{
hexley	0:281d6ff68967	2007	netif_set_status_callback(&pppControl[pd].netif, status_callback);
hexley	0:281d6ff68967	2008	}
hexley	0:281d6ff68967	2009	#endif /* LWIP_NETIF_STATUS_CALLBACK */
hexley	0:281d6ff68967	2010
hexley	0:281d6ff68967	2011	#if LWIP_NETIF_LINK_CALLBACK
hexley	0:281d6ff68967	2012	/** Set the link callback of a PPP's netif
hexley	0:281d6ff68967	2013	*
hexley	0:281d6ff68967	2014	* @param pd The PPP descriptor returned by pppOpen()
hexley	0:281d6ff68967	2015	* @param link_callback pointer to the link callback function
hexley	0:281d6ff68967	2016	*
hexley	0:281d6ff68967	2017	* @see netif_set_link_callback
hexley	0:281d6ff68967	2018	*/
hexley	0:281d6ff68967	2019	void
hexley	0:281d6ff68967	2020	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
hexley	0:281d6ff68967	2021	{
hexley	0:281d6ff68967	2022	netif_set_link_callback(&pppControl[pd].netif, link_callback);
hexley	0:281d6ff68967	2023	}
hexley	0:281d6ff68967	2024	#endif /* LWIP_NETIF_LINK_CALLBACK */
hexley	0:281d6ff68967	2025
hexley	0:281d6ff68967	2026	#endif /* PPP_SUPPORT */

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Type:	Library
Created:	19 Nov 2010
Imports:	44
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	1

lwip/netif/ppp/ppp.c@0:281d6ff68967, 2010-11-19 (annotated)

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