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lwip/netif/ppp/ppp.c@5:dd63a1e02b1b, 2010-07-27 (annotated)

Committer:: donatien
Date:: Tue Jul 27 15:59:42 2010 +0000
Revision:: 5:dd63a1e02b1b
Parent:: 4:fd826cad83c0

Who changed what in which revision?

User	Revision	Line number	New contents of line
donatien	0:632c9925f013	1	/*****************************************************************************
donatien	0:632c9925f013	2	* ppp.c - Network Point to Point Protocol program file.
donatien	0:632c9925f013	3	*
donatien	0:632c9925f013	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
donatien	0:632c9925f013	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
donatien	0:632c9925f013	6	*
donatien	0:632c9925f013	7	* The authors hereby grant permission to use, copy, modify, distribute,
donatien	0:632c9925f013	8	* and license this software and its documentation for any purpose, provided
donatien	0:632c9925f013	9	* that existing copyright notices are retained in all copies and that this
donatien	0:632c9925f013	10	* notice and the following disclaimer are included verbatim in any
donatien	0:632c9925f013	11	* distributions. No written agreement, license, or royalty fee is required
donatien	0:632c9925f013	12	* for any of the authorized uses.
donatien	0:632c9925f013	13	*
donatien	0:632c9925f013	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
donatien	0:632c9925f013	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
donatien	0:632c9925f013	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
donatien	0:632c9925f013	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
donatien	0:632c9925f013	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
donatien	0:632c9925f013	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
donatien	0:632c9925f013	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
donatien	0:632c9925f013	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
donatien	0:632c9925f013	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
donatien	0:632c9925f013	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
donatien	0:632c9925f013	24	*
donatien	0:632c9925f013	25	******************************************************************************
donatien	0:632c9925f013	26	* REVISION HISTORY
donatien	0:632c9925f013	27	*
donatien	0:632c9925f013	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
donatien	0:632c9925f013	29	* Ported to lwIP.
donatien	0:632c9925f013	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
donatien	0:632c9925f013	31	* Original.
donatien	0:632c9925f013	32	*****************************************************************************/
donatien	0:632c9925f013	33
donatien	0:632c9925f013	34	/*
donatien	0:632c9925f013	35	* ppp_defs.h - PPP definitions.
donatien	0:632c9925f013	36	*
donatien	0:632c9925f013	37	* if_pppvar.h - private structures and declarations for PPP.
donatien	0:632c9925f013	38	*
donatien	0:632c9925f013	39	* Copyright (c) 1994 The Australian National University.
donatien	0:632c9925f013	40	* All rights reserved.
donatien	0:632c9925f013	41	*
donatien	0:632c9925f013	42	* Permission to use, copy, modify, and distribute this software and its
donatien	0:632c9925f013	43	* documentation is hereby granted, provided that the above copyright
donatien	0:632c9925f013	44	* notice appears in all copies. This software is provided without any
donatien	0:632c9925f013	45	* warranty, express or implied. The Australian National University
donatien	0:632c9925f013	46	* makes no representations about the suitability of this software for
donatien	0:632c9925f013	47	* any purpose.
donatien	0:632c9925f013	48	*
donatien	0:632c9925f013	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
donatien	0:632c9925f013	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
donatien	0:632c9925f013	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
donatien	0:632c9925f013	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
donatien	0:632c9925f013	53	* OF SUCH DAMAGE.
donatien	0:632c9925f013	54	*
donatien	0:632c9925f013	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
donatien	0:632c9925f013	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
donatien	0:632c9925f013	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
donatien	0:632c9925f013	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
donatien	0:632c9925f013	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
donatien	0:632c9925f013	60	* OR MODIFICATIONS.
donatien	0:632c9925f013	61	*/
donatien	0:632c9925f013	62
donatien	0:632c9925f013	63	/*
donatien	0:632c9925f013	64	* if_ppp.h - Point-to-Point Protocol definitions.
donatien	0:632c9925f013	65	*
donatien	0:632c9925f013	66	* Copyright (c) 1989 Carnegie Mellon University.
donatien	0:632c9925f013	67	* All rights reserved.
donatien	0:632c9925f013	68	*
donatien	0:632c9925f013	69	* Redistribution and use in source and binary forms are permitted
donatien	0:632c9925f013	70	* provided that the above copyright notice and this paragraph are
donatien	0:632c9925f013	71	* duplicated in all such forms and that any documentation,
donatien	0:632c9925f013	72	* advertising materials, and other materials related to such
donatien	0:632c9925f013	73	* distribution and use acknowledge that the software was developed
donatien	0:632c9925f013	74	* by Carnegie Mellon University. The name of the
donatien	0:632c9925f013	75	* University may not be used to endorse or promote products derived
donatien	0:632c9925f013	76	* from this software without specific prior written permission.
donatien	0:632c9925f013	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
donatien	0:632c9925f013	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
donatien	0:632c9925f013	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
donatien	0:632c9925f013	80	*/
donatien	0:632c9925f013	81
donatien	0:632c9925f013	82	#include "lwip/opt.h"
donatien	0:632c9925f013	83
donatien	0:632c9925f013	84	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
donatien	0:632c9925f013	85
donatien	0:632c9925f013	86	#include "lwip/ip.h" /* for ip_input() */
donatien	0:632c9925f013	87
donatien	0:632c9925f013	88	#include "ppp.h"
donatien	0:632c9925f013	89	#include "pppdebug.h"
donatien	0:632c9925f013	90
donatien	0:632c9925f013	91	#include "randm.h"
donatien	0:632c9925f013	92	#include "fsm.h"
donatien	0:632c9925f013	93	#if PAP_SUPPORT
donatien	0:632c9925f013	94	#include "pap.h"
donatien	0:632c9925f013	95	#endif /* PAP_SUPPORT */
donatien	0:632c9925f013	96	#if CHAP_SUPPORT
donatien	0:632c9925f013	97	#include "chap.h"
donatien	0:632c9925f013	98	#endif /* CHAP_SUPPORT */
donatien	0:632c9925f013	99	#include "ipcp.h"
donatien	0:632c9925f013	100	#include "lcp.h"
donatien	0:632c9925f013	101	#include "magic.h"
donatien	0:632c9925f013	102	#include "auth.h"
donatien	0:632c9925f013	103	#if VJ_SUPPORT
donatien	0:632c9925f013	104	#include "vj.h"
donatien	0:632c9925f013	105	#endif /* VJ_SUPPORT */
donatien	0:632c9925f013	106	#if PPPOE_SUPPORT
donatien	0:632c9925f013	107	#include "netif/ppp_oe.h"
donatien	0:632c9925f013	108	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	109
donatien	0:632c9925f013	110	#include "lwip/tcpip.h"
donatien	0:632c9925f013	111	#include "lwip/api.h"
donatien	0:632c9925f013	112	#include "lwip/snmp.h"
donatien	0:632c9925f013	113
donatien	0:632c9925f013	114	#include <string.h>
donatien	0:632c9925f013	115
donatien	0:632c9925f013	116	/*************************/
donatien	0:632c9925f013	117	/* LOCAL DEFINITIONS */
donatien	0:632c9925f013	118	/*************************/
donatien	0:632c9925f013	119
donatien	0:632c9925f013	120	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
donatien	0:632c9925f013	121	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
donatien	0:632c9925f013	122	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
donatien	0:632c9925f013	123	*/
donatien	0:632c9925f013	124	#ifndef PPP_INPROC_MULTITHREADED
donatien	0:632c9925f013	125	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
donatien	0:632c9925f013	126	#endif
donatien	0:632c9925f013	127
donatien	0:632c9925f013	128	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
donatien	0:632c9925f013	129	* Default is 0: call pppos_input() for received raw characters, charcater
donatien	0:632c9925f013	130	* reception is up to the port */
donatien	0:632c9925f013	131	#ifndef PPP_INPROC_OWNTHREAD
donatien	0:632c9925f013	132	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
donatien	0:632c9925f013	133	#endif
donatien	0:632c9925f013	134
donatien	0:632c9925f013	135	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
donatien	0:632c9925f013	136	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
donatien	0:632c9925f013	137	#endif
donatien	0:632c9925f013	138
donatien	0:632c9925f013	139	/*
donatien	0:632c9925f013	140	* The basic PPP frame.
donatien	0:632c9925f013	141	*/
donatien	0:632c9925f013	142	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
donatien	0:632c9925f013	143	#define PPP_CONTROL(p) (((u_char *)(p))[1])
donatien	0:632c9925f013	144	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
donatien	0:632c9925f013	145
donatien	0:632c9925f013	146	/* PPP packet parser states. Current state indicates operation yet to be
donatien	0:632c9925f013	147	* completed. */
donatien	0:632c9925f013	148	typedef enum {
donatien	0:632c9925f013	149	PDIDLE = 0, /* Idle state - waiting. */
donatien	0:632c9925f013	150	PDSTART, /* Process start flag. */
donatien	0:632c9925f013	151	PDADDRESS, /* Process address field. */
donatien	0:632c9925f013	152	PDCONTROL, /* Process control field. */
donatien	0:632c9925f013	153	PDPROTOCOL1, /* Process protocol field 1. */
donatien	0:632c9925f013	154	PDPROTOCOL2, /* Process protocol field 2. */
donatien	0:632c9925f013	155	PDDATA /* Process data byte. */
donatien	0:632c9925f013	156	} PPPDevStates;
donatien	0:632c9925f013	157
donatien	0:632c9925f013	158	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
donatien	0:632c9925f013	159
donatien	0:632c9925f013	160	/************************/
donatien	0:632c9925f013	161	/* LOCAL DATA TYPES */
donatien	0:632c9925f013	162	/************************/
donatien	0:632c9925f013	163
donatien	0:632c9925f013	164	/** RX buffer size: this may be configured smaller! */
donatien	0:632c9925f013	165	#ifndef PPPOS_RX_BUFSIZE
donatien	0:632c9925f013	166	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
donatien	0:632c9925f013	167	#endif
donatien	0:632c9925f013	168
donatien	0:632c9925f013	169	typedef struct PPPControlRx_s {
donatien	0:632c9925f013	170	/** unit number / ppp descriptor */
donatien	0:632c9925f013	171	int pd;
donatien	0:632c9925f013	172	/** the rx file descriptor */
donatien	0:632c9925f013	173	sio_fd_t fd;
donatien	0:632c9925f013	174	/** receive buffer - encoded data is stored here */
donatien	0:632c9925f013	175	u_char rxbuf[PPPOS_RX_BUFSIZE];
donatien	0:632c9925f013	176
donatien	0:632c9925f013	177	/* The input packet. */
donatien	0:632c9925f013	178	struct pbuf inHead, inTail;
donatien	0:632c9925f013	179
donatien	0:632c9925f013	180	#if PPPOS_SUPPORT
donatien	0:632c9925f013	181	u16_t inProtocol; /* The input protocol code. */
donatien	0:632c9925f013	182	u16_t inFCS; /* Input Frame Check Sequence value. */
donatien	0:632c9925f013	183	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	184	PPPDevStates inState; /* The input process state. */
donatien	0:632c9925f013	185	char inEscaped; /* Escape next character. */
donatien	0:632c9925f013	186	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
donatien	0:632c9925f013	187	} PPPControlRx;
donatien	0:632c9925f013	188
donatien	0:632c9925f013	189	/*
donatien	0:632c9925f013	190	* PPP interface control block.
donatien	0:632c9925f013	191	*/
donatien	0:632c9925f013	192	typedef struct PPPControl_s {
donatien	0:632c9925f013	193	PPPControlRx rx;
donatien	0:632c9925f013	194	char openFlag; /* True when in use. */
donatien	0:632c9925f013	195	#if PPPOE_SUPPORT
donatien	0:632c9925f013	196	struct netif *ethif;
donatien	0:632c9925f013	197	struct pppoe_softc *pppoe_sc;
donatien	0:632c9925f013	198	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	199	int if_up; /* True when the interface is up. */
donatien	0:632c9925f013	200	int errCode; /* Code indicating why interface is down. */
donatien	0:632c9925f013	201	#if PPPOS_SUPPORT
donatien	0:632c9925f013	202	sio_fd_t fd; /* File device ID of port. */
donatien	0:632c9925f013	203	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	204	u16_t mtu; /* Peer's mru */
donatien	0:632c9925f013	205	int pcomp; /* Does peer accept protocol compression? */
donatien	0:632c9925f013	206	int accomp; /* Does peer accept addr/ctl compression? */
donatien	0:632c9925f013	207	u_long lastXMit; /* Time of last transmission. */
donatien	0:632c9925f013	208	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
donatien	0:632c9925f013	209	#if PPPOS_SUPPORT && VJ_SUPPORT
donatien	0:632c9925f013	210	int vjEnabled; /* Flag indicating VJ compression enabled. */
donatien	0:632c9925f013	211	struct vjcompress vjComp; /* Van Jacobson compression header. */
donatien	0:632c9925f013	212	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:632c9925f013	213
donatien	0:632c9925f013	214	struct netif netif;
donatien	0:632c9925f013	215
donatien	0:632c9925f013	216	struct ppp_addrs addrs;
donatien	0:632c9925f013	217
donatien	0:632c9925f013	218	void (linkStatusCB)(void ctx, int errCode, void *arg);
donatien	0:632c9925f013	219	void *linkStatusCtx;
donatien	0:632c9925f013	220
donatien	0:632c9925f013	221	} PPPControl;
donatien	0:632c9925f013	222
donatien	0:632c9925f013	223
donatien	0:632c9925f013	224	/*
donatien	0:632c9925f013	225	* Ioctl definitions.
donatien	0:632c9925f013	226	*/
donatien	0:632c9925f013	227
donatien	0:632c9925f013	228	struct npioctl {
donatien	0:632c9925f013	229	int protocol; /* PPP procotol, e.g. PPP_IP */
donatien	0:632c9925f013	230	enum NPmode mode;
donatien	0:632c9925f013	231	};
donatien	0:632c9925f013	232
donatien	0:632c9925f013	233
donatien	0:632c9925f013	234
donatien	0:632c9925f013	235	/***********************************/
donatien	0:632c9925f013	236	/* LOCAL FUNCTION DECLARATIONS */
donatien	0:632c9925f013	237	/***********************************/
donatien	0:632c9925f013	238	#if PPPOS_SUPPORT
donatien	0:632c9925f013	239	#if PPP_INPROC_OWNTHREAD
donatien	0:632c9925f013	240	static void pppInputThread(void *arg);
donatien	0:632c9925f013	241	#endif /* PPP_INPROC_OWNTHREAD */
donatien	0:632c9925f013	242	static void pppDrop(PPPControlRx *pcrx);
donatien	0:632c9925f013	243	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
donatien	0:632c9925f013	244	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	245
donatien	0:632c9925f013	246
donatien	0:632c9925f013	247	/******************************/
donatien	0:632c9925f013	248	/* PUBLIC DATA STRUCTURES */
donatien	0:632c9925f013	249	/******************************/
donatien	0:632c9925f013	250	u_long subnetMask;
donatien	0:632c9925f013	251
donatien	5:dd63a1e02b1b	252	static PPPControl pppControl[NUM_PPP] MEM_POSITION; /* The PPP interface control blocks. */
donatien	0:632c9925f013	253
donatien	0:632c9925f013	254	/*
donatien	0:632c9925f013	255	* PPP Data Link Layer "protocol" table.
donatien	0:632c9925f013	256	* One entry per supported protocol.
donatien	0:632c9925f013	257	* The last entry must be NULL.
donatien	0:632c9925f013	258	*/
donatien	0:632c9925f013	259	struct protent *ppp_protocols[] = {
donatien	0:632c9925f013	260	&lcp_protent,
donatien	0:632c9925f013	261	#if PAP_SUPPORT
donatien	0:632c9925f013	262	&pap_protent,
donatien	0:632c9925f013	263	#endif /* PAP_SUPPORT */
donatien	0:632c9925f013	264	#if CHAP_SUPPORT
donatien	0:632c9925f013	265	&chap_protent,
donatien	0:632c9925f013	266	#endif /* CHAP_SUPPORT */
donatien	0:632c9925f013	267	#if CBCP_SUPPORT
donatien	0:632c9925f013	268	&cbcp_protent,
donatien	0:632c9925f013	269	#endif /* CBCP_SUPPORT */
donatien	0:632c9925f013	270	&ipcp_protent,
donatien	0:632c9925f013	271	#if CCP_SUPPORT
donatien	0:632c9925f013	272	&ccp_protent,
donatien	0:632c9925f013	273	#endif /* CCP_SUPPORT */
donatien	0:632c9925f013	274	NULL
donatien	0:632c9925f013	275	};
donatien	0:632c9925f013	276
donatien	0:632c9925f013	277
donatien	0:632c9925f013	278	/*
donatien	0:632c9925f013	279	* Buffers for outgoing packets. This must be accessed only from the appropriate
donatien	0:632c9925f013	280	* PPP task so that it doesn't need to be protected to avoid collisions.
donatien	0:632c9925f013	281	*/
donatien	5:dd63a1e02b1b	282	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] MEM_POSITION;
donatien	0:632c9925f013	283
donatien	0:632c9925f013	284
donatien	0:632c9925f013	285	/*****************************/
donatien	0:632c9925f013	286	/* LOCAL DATA STRUCTURES */
donatien	0:632c9925f013	287	/*****************************/
donatien	0:632c9925f013	288
donatien	0:632c9925f013	289	#if PPPOS_SUPPORT
donatien	0:632c9925f013	290	/*
donatien	0:632c9925f013	291	* FCS lookup table as calculated by genfcstab.
donatien	0:632c9925f013	292	* @todo: smaller, slower implementation for lower memory footprint?
donatien	0:632c9925f013	293	*/
donatien	0:632c9925f013	294	static const u_short fcstab[256] = {
donatien	0:632c9925f013	295	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
donatien	0:632c9925f013	296	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
donatien	0:632c9925f013	297	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
donatien	0:632c9925f013	298	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
donatien	0:632c9925f013	299	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
donatien	0:632c9925f013	300	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
donatien	0:632c9925f013	301	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
donatien	0:632c9925f013	302	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
donatien	0:632c9925f013	303	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
donatien	0:632c9925f013	304	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
donatien	0:632c9925f013	305	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
donatien	0:632c9925f013	306	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
donatien	0:632c9925f013	307	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
donatien	0:632c9925f013	308	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
donatien	0:632c9925f013	309	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
donatien	0:632c9925f013	310	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
donatien	0:632c9925f013	311	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
donatien	0:632c9925f013	312	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
donatien	0:632c9925f013	313	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
donatien	0:632c9925f013	314	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
donatien	0:632c9925f013	315	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
donatien	0:632c9925f013	316	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
donatien	0:632c9925f013	317	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
donatien	0:632c9925f013	318	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
donatien	0:632c9925f013	319	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
donatien	0:632c9925f013	320	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
donatien	0:632c9925f013	321	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
donatien	0:632c9925f013	322	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
donatien	0:632c9925f013	323	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
donatien	0:632c9925f013	324	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
donatien	0:632c9925f013	325	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
donatien	0:632c9925f013	326	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
donatien	0:632c9925f013	327	};
donatien	0:632c9925f013	328
donatien	0:632c9925f013	329	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
donatien	0:632c9925f013	330	* to select the specific bit for a character. */
donatien	0:632c9925f013	331	static u_char pppACCMMask[] = {
donatien	0:632c9925f013	332	0x01,
donatien	0:632c9925f013	333	0x02,
donatien	0:632c9925f013	334	0x04,
donatien	0:632c9925f013	335	0x08,
donatien	0:632c9925f013	336	0x10,
donatien	0:632c9925f013	337	0x20,
donatien	0:632c9925f013	338	0x40,
donatien	0:632c9925f013	339	0x80
donatien	0:632c9925f013	340	};
donatien	0:632c9925f013	341
donatien	0:632c9925f013	342	/** Wake up the task blocked in reading from serial line (if any) */
donatien	0:632c9925f013	343	static void
donatien	0:632c9925f013	344	pppRecvWakeup(int pd)
donatien	0:632c9925f013	345	{
donatien	0:632c9925f013	346	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
donatien	0:632c9925f013	347	sio_read_abort(pppControl[pd].fd);
donatien	0:632c9925f013	348	}
donatien	0:632c9925f013	349	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	350
donatien	0:632c9925f013	351	void
donatien	0:632c9925f013	352	pppLinkTerminated(int pd)
donatien	0:632c9925f013	353	{
donatien	0:632c9925f013	354	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
donatien	0:632c9925f013	355
donatien	0:632c9925f013	356	#if PPPOE_SUPPORT
donatien	0:632c9925f013	357	if (pppControl[pd].ethif) {
donatien	0:632c9925f013	358	pppoe_disconnect(pppControl[pd].pppoe_sc);
donatien	0:632c9925f013	359	} else
donatien	0:632c9925f013	360	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	361	{
donatien	0:632c9925f013	362	#if PPPOS_SUPPORT
donatien	0:632c9925f013	363	PPPControl* pc;
donatien	0:632c9925f013	364	pppRecvWakeup(pd);
donatien	0:632c9925f013	365	pc = &pppControl[pd];
donatien	0:632c9925f013	366	pppDrop(&pc->rx); /* bug fix #17726 */
donatien	0:632c9925f013	367
donatien	0:632c9925f013	368	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
donatien	0:632c9925f013	369	if (pc->linkStatusCB) {
donatien	0:632c9925f013	370	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
donatien	0:632c9925f013	371	}
donatien	0:632c9925f013	372
donatien	0:632c9925f013	373	pc->openFlag = 0;/**/
donatien	0:632c9925f013	374	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	375	}
donatien	0:632c9925f013	376	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
donatien	0:632c9925f013	377	}
donatien	0:632c9925f013	378
donatien	0:632c9925f013	379	void
donatien	0:632c9925f013	380	pppLinkDown(int pd)
donatien	0:632c9925f013	381	{
donatien	0:632c9925f013	382	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
donatien	0:632c9925f013	383
donatien	0:632c9925f013	384	#if PPPOE_SUPPORT
donatien	0:632c9925f013	385	if (pppControl[pd].ethif) {
donatien	0:632c9925f013	386	pppoe_disconnect(pppControl[pd].pppoe_sc);
donatien	0:632c9925f013	387	} else
donatien	0:632c9925f013	388	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	389	{
donatien	0:632c9925f013	390	#if PPPOS_SUPPORT
donatien	0:632c9925f013	391	pppRecvWakeup(pd);
donatien	0:632c9925f013	392	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	393	}
donatien	0:632c9925f013	394	}
donatien	0:632c9925f013	395
donatien	0:632c9925f013	396	/** Initiate LCP open request */
donatien	0:632c9925f013	397	static void
donatien	0:632c9925f013	398	pppStart(int pd)
donatien	0:632c9925f013	399	{
donatien	0:632c9925f013	400	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
donatien	0:632c9925f013	401	lcp_lowerup(pd);
donatien	0:632c9925f013	402	lcp_open(pd); /* Start protocol */
donatien	0:632c9925f013	403	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
donatien	0:632c9925f013	404	}
donatien	0:632c9925f013	405
donatien	0:632c9925f013	406	/** LCP close request */
donatien	0:632c9925f013	407	static void
donatien	0:632c9925f013	408	pppStop(int pd)
donatien	0:632c9925f013	409	{
donatien	0:632c9925f013	410	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
donatien	0:632c9925f013	411	lcp_close(pd, "User request");
donatien	0:632c9925f013	412	}
donatien	0:632c9925f013	413
donatien	0:632c9925f013	414	/** Called when carrier/link is lost */
donatien	0:632c9925f013	415	static void
donatien	0:632c9925f013	416	pppHup(int pd)
donatien	0:632c9925f013	417	{
donatien	0:632c9925f013	418	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
donatien	0:632c9925f013	419	lcp_lowerdown(pd);
donatien	0:632c9925f013	420	link_terminated(pd);
donatien	0:632c9925f013	421	}
donatien	0:632c9925f013	422
donatien	0:632c9925f013	423	/***********************************/
donatien	0:632c9925f013	424	/* PUBLIC FUNCTION DEFINITIONS */
donatien	0:632c9925f013	425	/***********************************/
donatien	0:632c9925f013	426	/* Initialize the PPP subsystem. */
donatien	0:632c9925f013	427
donatien	0:632c9925f013	428	struct ppp_settings ppp_settings;
donatien	0:632c9925f013	429
donatien	0:632c9925f013	430	void
donatien	0:632c9925f013	431	pppInit(void)
donatien	0:632c9925f013	432	{
donatien	0:632c9925f013	433	struct protent *protp;
donatien	0:632c9925f013	434	int i, j;
donatien	0:632c9925f013	435
donatien	0:632c9925f013	436	memset(&ppp_settings, 0, sizeof(ppp_settings));
donatien	0:632c9925f013	437	ppp_settings.usepeerdns = 1;
donatien	0:632c9925f013	438	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
donatien	0:632c9925f013	439
donatien	0:632c9925f013	440	magicInit();
donatien	0:632c9925f013	441
donatien	4:fd826cad83c0	442	subnetMask = PP_HTONL(0xffffff00);
donatien	0:632c9925f013	443
donatien	0:632c9925f013	444	for (i = 0; i < NUM_PPP; i++) {
donatien	0:632c9925f013	445	/* Initialize each protocol to the standard option set. */
donatien	0:632c9925f013	446	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
donatien	0:632c9925f013	447	(*protp->init)(i);
donatien	0:632c9925f013	448	}
donatien	0:632c9925f013	449	}
donatien	0:632c9925f013	450	}
donatien	0:632c9925f013	451
donatien	0:632c9925f013	452	void
donatien	0:632c9925f013	453	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
donatien	0:632c9925f013	454	{
donatien	0:632c9925f013	455	switch(authType) {
donatien	0:632c9925f013	456	case PPPAUTHTYPE_NONE:
donatien	0:632c9925f013	457	default:
donatien	0:632c9925f013	458	#ifdef LWIP_PPP_STRICT_PAP_REJECT
donatien	0:632c9925f013	459	ppp_settings.refuse_pap = 1;
donatien	0:632c9925f013	460	#else /* LWIP_PPP_STRICT_PAP_REJECT */
donatien	0:632c9925f013	461	/* some providers request pap and accept an empty login/pw */
donatien	0:632c9925f013	462	ppp_settings.refuse_pap = 0;
donatien	0:632c9925f013	463	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
donatien	0:632c9925f013	464	ppp_settings.refuse_chap = 1;
donatien	0:632c9925f013	465	break;
donatien	0:632c9925f013	466
donatien	0:632c9925f013	467	case PPPAUTHTYPE_ANY:
donatien	0:632c9925f013	468	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
donatien	0:632c9925f013	469	* RFC 1994 says:
donatien	0:632c9925f013	470	*
donatien	0:632c9925f013	471	* In practice, within or associated with each PPP server, there is a
donatien	0:632c9925f013	472	* database which associates "user" names with authentication
donatien	0:632c9925f013	473	* information ("secrets"). It is not anticipated that a particular
donatien	0:632c9925f013	474	* named user would be authenticated by multiple methods. This would
donatien	0:632c9925f013	475	* make the user vulnerable to attacks which negotiate the least secure
donatien	0:632c9925f013	476	* method from among a set (such as PAP rather than CHAP). If the same
donatien	0:632c9925f013	477	* secret was used, PAP would reveal the secret to be used later with
donatien	0:632c9925f013	478	* CHAP.
donatien	0:632c9925f013	479	*
donatien	0:632c9925f013	480	* Instead, for each user name there should be an indication of exactly
donatien	0:632c9925f013	481	* one method used to authenticate that user name. If a user needs to
donatien	0:632c9925f013	482	* make use of different authentication methods under different
donatien	0:632c9925f013	483	* circumstances, then distinct user names SHOULD be employed, each of
donatien	0:632c9925f013	484	* which identifies exactly one authentication method.
donatien	0:632c9925f013	485	*
donatien	0:632c9925f013	486	*/
donatien	0:632c9925f013	487	ppp_settings.refuse_pap = 0;
donatien	0:632c9925f013	488	ppp_settings.refuse_chap = 0;
donatien	0:632c9925f013	489	break;
donatien	0:632c9925f013	490
donatien	0:632c9925f013	491	case PPPAUTHTYPE_PAP:
donatien	0:632c9925f013	492	ppp_settings.refuse_pap = 0;
donatien	0:632c9925f013	493	ppp_settings.refuse_chap = 1;
donatien	0:632c9925f013	494	break;
donatien	0:632c9925f013	495
donatien	0:632c9925f013	496	case PPPAUTHTYPE_CHAP:
donatien	0:632c9925f013	497	ppp_settings.refuse_pap = 1;
donatien	0:632c9925f013	498	ppp_settings.refuse_chap = 0;
donatien	0:632c9925f013	499	break;
donatien	0:632c9925f013	500	}
donatien	0:632c9925f013	501
donatien	0:632c9925f013	502	if(user) {
donatien	0:632c9925f013	503	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
donatien	0:632c9925f013	504	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
donatien	0:632c9925f013	505	} else {
donatien	0:632c9925f013	506	ppp_settings.user[0] = '\0';
donatien	0:632c9925f013	507	}
donatien	0:632c9925f013	508
donatien	0:632c9925f013	509	if(passwd) {
donatien	0:632c9925f013	510	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
donatien	0:632c9925f013	511	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
donatien	0:632c9925f013	512	} else {
donatien	0:632c9925f013	513	ppp_settings.passwd[0] = '\0';
donatien	0:632c9925f013	514	}
donatien	0:632c9925f013	515	}
donatien	0:632c9925f013	516
donatien	0:632c9925f013	517	#if PPPOS_SUPPORT
donatien	0:632c9925f013	518	/** Open a new PPP connection using the given I/O device.
donatien	0:632c9925f013	519	* This initializes the PPP control block but does not
donatien	0:632c9925f013	520	* attempt to negotiate the LCP session. If this port
donatien	0:632c9925f013	521	* connects to a modem, the modem connection must be
donatien	0:632c9925f013	522	* established before calling this.
donatien	0:632c9925f013	523	* Return a new PPP connection descriptor on success or
donatien	0:632c9925f013	524	* an error code (negative) on failure.
donatien	0:632c9925f013	525	*
donatien	0:632c9925f013	526	* pppOpen() is directly defined to this function.
donatien	0:632c9925f013	527	*/
donatien	0:632c9925f013	528	int
donatien	0:632c9925f013	529	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
donatien	0:632c9925f013	530	{
donatien	0:632c9925f013	531	PPPControl *pc;
donatien	0:632c9925f013	532	int pd;
donatien	0:632c9925f013	533
donatien	0:632c9925f013	534	if (linkStatusCB == NULL) {
donatien	0:632c9925f013	535	/* PPP is single-threaded: without a callback,
donatien	0:632c9925f013	536	* there is no way to know when the link is up. */
donatien	0:632c9925f013	537	return PPPERR_PARAM;
donatien	0:632c9925f013	538	}
donatien	0:632c9925f013	539
donatien	0:632c9925f013	540	/* Find a free PPP session descriptor. */
donatien	0:632c9925f013	541	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
donatien	0:632c9925f013	542
donatien	0:632c9925f013	543	if (pd >= NUM_PPP) {
donatien	0:632c9925f013	544	pd = PPPERR_OPEN;
donatien	0:632c9925f013	545	} else {
donatien	0:632c9925f013	546	pc = &pppControl[pd];
donatien	0:632c9925f013	547	/* @todo: is this correct or do I overwrite something? */
donatien	0:632c9925f013	548	memset(pc, 0, sizeof(PPPControl));
donatien	0:632c9925f013	549	pc->rx.pd = pd;
donatien	0:632c9925f013	550	pc->rx.fd = fd;
donatien	0:632c9925f013	551
donatien	0:632c9925f013	552	pc->openFlag = 1;
donatien	0:632c9925f013	553	pc->fd = fd;
donatien	0:632c9925f013	554
donatien	0:632c9925f013	555	#if VJ_SUPPORT
donatien	0:632c9925f013	556	vj_compress_init(&pc->vjComp);
donatien	0:632c9925f013	557	#endif /* VJ_SUPPORT */
donatien	0:632c9925f013	558
donatien	0:632c9925f013	559	/*
donatien	0:632c9925f013	560	* Default the in and out accm so that escape and flag characters
donatien	0:632c9925f013	561	* are always escaped.
donatien	0:632c9925f013	562	*/
donatien	0:632c9925f013	563	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
donatien	0:632c9925f013	564	pc->outACCM[15] = 0x60;
donatien	0:632c9925f013	565
donatien	0:632c9925f013	566	pc->linkStatusCB = linkStatusCB;
donatien	0:632c9925f013	567	pc->linkStatusCtx = linkStatusCtx;
donatien	0:632c9925f013	568
donatien	0:632c9925f013	569	/*
donatien	0:632c9925f013	570	* Start the connection and handle incoming events (packet or timeout).
donatien	0:632c9925f013	571	*/
donatien	0:632c9925f013	572	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
donatien	0:632c9925f013	573	pppStart(pd);
donatien	0:632c9925f013	574	#if PPP_INPROC_OWNTHREAD
donatien	0:632c9925f013	575	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
donatien	0:632c9925f013	576	#endif
donatien	0:632c9925f013	577	}
donatien	0:632c9925f013	578
donatien	0:632c9925f013	579	return pd;
donatien	0:632c9925f013	580	}
donatien	0:632c9925f013	581	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	582
donatien	0:632c9925f013	583	#if PPPOE_SUPPORT
donatien	0:632c9925f013	584	static void pppOverEthernetLinkStatusCB(int pd, int up);
donatien	0:632c9925f013	585
donatien	0:632c9925f013	586	void
donatien	0:632c9925f013	587	pppOverEthernetClose(int pd)
donatien	0:632c9925f013	588	{
donatien	0:632c9925f013	589	PPPControl* pc = &pppControl[pd];
donatien	0:632c9925f013	590
donatien	0:632c9925f013	591	/* TJL There's no lcp_deinit */
donatien	0:632c9925f013	592	lcp_close(pd, NULL);
donatien	0:632c9925f013	593
donatien	0:632c9925f013	594	pppoe_destroy(&pc->netif);
donatien	0:632c9925f013	595	}
donatien	0:632c9925f013	596
donatien	0:632c9925f013	597	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
donatien	0:632c9925f013	598	{
donatien	0:632c9925f013	599	PPPControl *pc;
donatien	0:632c9925f013	600	int pd;
donatien	0:632c9925f013	601
donatien	0:632c9925f013	602	LWIP_UNUSED_ARG(service_name);
donatien	0:632c9925f013	603	LWIP_UNUSED_ARG(concentrator_name);
donatien	0:632c9925f013	604
donatien	0:632c9925f013	605	if (linkStatusCB == NULL) {
donatien	0:632c9925f013	606	/* PPP is single-threaded: without a callback,
donatien	0:632c9925f013	607	* there is no way to know when the link is up. */
donatien	0:632c9925f013	608	return PPPERR_PARAM;
donatien	0:632c9925f013	609	}
donatien	0:632c9925f013	610
donatien	0:632c9925f013	611	/* Find a free PPP session descriptor. Critical region? */
donatien	0:632c9925f013	612	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
donatien	0:632c9925f013	613	if (pd >= NUM_PPP) {
donatien	0:632c9925f013	614	pd = PPPERR_OPEN;
donatien	0:632c9925f013	615	} else {
donatien	0:632c9925f013	616	pc = &pppControl[pd];
donatien	0:632c9925f013	617	memset(pc, 0, sizeof(PPPControl));
donatien	0:632c9925f013	618	pc->openFlag = 1;
donatien	0:632c9925f013	619	pc->ethif = ethif;
donatien	0:632c9925f013	620
donatien	0:632c9925f013	621	pc->linkStatusCB = linkStatusCB;
donatien	0:632c9925f013	622	pc->linkStatusCtx = linkStatusCtx;
donatien	0:632c9925f013	623
donatien	0:632c9925f013	624	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
donatien	0:632c9925f013	625	lcp_wantoptions[pd].neg_asyncmap = 0;
donatien	0:632c9925f013	626	lcp_wantoptions[pd].neg_pcompression = 0;
donatien	0:632c9925f013	627	lcp_wantoptions[pd].neg_accompression = 0;
donatien	0:632c9925f013	628
donatien	0:632c9925f013	629	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
donatien	0:632c9925f013	630	lcp_allowoptions[pd].neg_asyncmap = 0;
donatien	0:632c9925f013	631	lcp_allowoptions[pd].neg_pcompression = 0;
donatien	0:632c9925f013	632	lcp_allowoptions[pd].neg_accompression = 0;
donatien	0:632c9925f013	633
donatien	0:632c9925f013	634	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
donatien	0:632c9925f013	635	pc->openFlag = 0;
donatien	0:632c9925f013	636	return PPPERR_OPEN;
donatien	0:632c9925f013	637	}
donatien	0:632c9925f013	638
donatien	0:632c9925f013	639	pppoe_connect(pc->pppoe_sc);
donatien	0:632c9925f013	640	}
donatien	0:632c9925f013	641
donatien	0:632c9925f013	642	return pd;
donatien	0:632c9925f013	643	}
donatien	0:632c9925f013	644	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	645
donatien	0:632c9925f013	646
donatien	0:632c9925f013	647	/* Close a PPP connection and release the descriptor.
donatien	0:632c9925f013	648	* Any outstanding packets in the queues are dropped.
donatien	0:632c9925f013	649	* Return 0 on success, an error code on failure. */
donatien	0:632c9925f013	650	int
donatien	0:632c9925f013	651	pppClose(int pd)
donatien	0:632c9925f013	652	{
donatien	0:632c9925f013	653	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	654	int st = 0;
donatien	0:632c9925f013	655
donatien	0:632c9925f013	656	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
donatien	0:632c9925f013	657
donatien	0:632c9925f013	658	/* Disconnect */
donatien	0:632c9925f013	659	#if PPPOE_SUPPORT
donatien	0:632c9925f013	660	if(pc->ethif) {
donatien	0:632c9925f013	661	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
donatien	0:632c9925f013	662	pc->errCode = PPPERR_USER;
donatien	0:632c9925f013	663	/* This will leave us at PHASE_DEAD. */
donatien	0:632c9925f013	664	pppStop(pd);
donatien	0:632c9925f013	665	} else
donatien	0:632c9925f013	666	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	667	{
donatien	0:632c9925f013	668	#if PPPOS_SUPPORT
donatien	0:632c9925f013	669	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
donatien	0:632c9925f013	670	pc->errCode = PPPERR_USER;
donatien	0:632c9925f013	671	/* This will leave us at PHASE_DEAD. */
donatien	0:632c9925f013	672	pppStop(pd);
donatien	0:632c9925f013	673	pppRecvWakeup(pd);
donatien	0:632c9925f013	674	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	675	}
donatien	0:632c9925f013	676
donatien	0:632c9925f013	677	return st;
donatien	0:632c9925f013	678	}
donatien	0:632c9925f013	679
donatien	0:632c9925f013	680	/* This function is called when carrier is lost on the PPP channel. */
donatien	0:632c9925f013	681	void
donatien	0:632c9925f013	682	pppSigHUP(int pd)
donatien	0:632c9925f013	683	{
donatien	0:632c9925f013	684	#if PPPOE_SUPPORT
donatien	0:632c9925f013	685	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	686	if(pc->ethif) {
donatien	0:632c9925f013	687	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
donatien	0:632c9925f013	688	pppHup(pd);
donatien	0:632c9925f013	689	} else
donatien	0:632c9925f013	690	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	691	{
donatien	0:632c9925f013	692	#if PPPOS_SUPPORT
donatien	0:632c9925f013	693	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
donatien	0:632c9925f013	694	pppHup(pd);
donatien	0:632c9925f013	695	pppRecvWakeup(pd);
donatien	0:632c9925f013	696	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	697	}
donatien	0:632c9925f013	698	}
donatien	0:632c9925f013	699
donatien	0:632c9925f013	700	#if PPPOS_SUPPORT
donatien	0:632c9925f013	701	static void
donatien	0:632c9925f013	702	nPut(PPPControl pc, struct pbuf nb)
donatien	0:632c9925f013	703	{
donatien	0:632c9925f013	704	struct pbuf *b;
donatien	4:fd826cad83c0	705	int c;
donatien	0:632c9925f013	706
donatien	0:632c9925f013	707	for(b = nb; b != NULL; b = b->next) {
donatien	5:dd63a1e02b1b	708	if((c = sio_write(pc->fd, (u8_t *)b->payload, b->len)) != b->len) {
donatien	0:632c9925f013	709	PPPDEBUG(LOG_WARNING,
donatien	4:fd826cad83c0	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));
donatien	0:632c9925f013	711	LINK_STATS_INC(link.err);
donatien	0:632c9925f013	712	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
donatien	0:632c9925f013	713	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:632c9925f013	714	pbuf_free(nb);
donatien	0:632c9925f013	715	return;
donatien	0:632c9925f013	716	}
donatien	0:632c9925f013	717	}
donatien	0:632c9925f013	718
donatien	0:632c9925f013	719	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
donatien	0:632c9925f013	720	snmp_inc_ifoutucastpkts(&pc->netif);
donatien	0:632c9925f013	721	pbuf_free(nb);
donatien	0:632c9925f013	722	LINK_STATS_INC(link.xmit);
donatien	0:632c9925f013	723	}
donatien	0:632c9925f013	724
donatien	0:632c9925f013	725	/*
donatien	0:632c9925f013	726	* pppAppend - append given character to end of given pbuf. If outACCM
donatien	0:632c9925f013	727	* is not NULL and the character needs to be escaped, do so.
donatien	0:632c9925f013	728	* If pbuf is full, append another.
donatien	0:632c9925f013	729	* Return the current pbuf.
donatien	0:632c9925f013	730	*/
donatien	0:632c9925f013	731	static struct pbuf *
donatien	0:632c9925f013	732	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
donatien	0:632c9925f013	733	{
donatien	0:632c9925f013	734	struct pbuf *tb = nb;
donatien	0:632c9925f013	735
donatien	0:632c9925f013	736	/* Make sure there is room for the character and an escape code.
donatien	0:632c9925f013	737	* Sure we don't quite fill the buffer if the character doesn't
donatien	0:632c9925f013	738	* get escaped but is one character worth complicating this? */
donatien	0:632c9925f013	739	/* Note: We assume no packet header. */
donatien	0:632c9925f013	740	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
donatien	0:632c9925f013	741	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
donatien	0:632c9925f013	742	if (tb) {
donatien	0:632c9925f013	743	nb->next = tb;
donatien	0:632c9925f013	744	} else {
donatien	0:632c9925f013	745	LINK_STATS_INC(link.memerr);
donatien	0:632c9925f013	746	}
donatien	0:632c9925f013	747	nb = tb;
donatien	0:632c9925f013	748	}
donatien	0:632c9925f013	749
donatien	0:632c9925f013	750	if (nb) {
donatien	0:632c9925f013	751	if (outACCM && ESCAPE_P(*outACCM, c)) {
donatien	0:632c9925f013	752	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
donatien	0:632c9925f013	753	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
donatien	0:632c9925f013	754	} else {
donatien	0:632c9925f013	755	((u_char)nb->payload + nb->len++) = c;
donatien	0:632c9925f013	756	}
donatien	0:632c9925f013	757	}
donatien	0:632c9925f013	758
donatien	0:632c9925f013	759	return tb;
donatien	0:632c9925f013	760	}
donatien	0:632c9925f013	761	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	762
donatien	0:632c9925f013	763	#if PPPOE_SUPPORT
donatien	0:632c9925f013	764	static err_t
donatien	4:fd826cad83c0	765	pppifOutputOverEthernet(int pd, struct pbuf *p)
donatien	0:632c9925f013	766	{
donatien	0:632c9925f013	767	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	768	struct pbuf *pb;
donatien	0:632c9925f013	769	u_short protocol = PPP_IP;
donatien	0:632c9925f013	770	int i=0;
donatien	0:632c9925f013	771	u16_t tot_len;
donatien	0:632c9925f013	772
donatien	0:632c9925f013	773	/* @todo: try to use pbuf_header() here! */
donatien	0:632c9925f013	774	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
donatien	0:632c9925f013	775	if(!pb) {
donatien	0:632c9925f013	776	LINK_STATS_INC(link.memerr);
donatien	0:632c9925f013	777	LINK_STATS_INC(link.proterr);
donatien	0:632c9925f013	778	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:632c9925f013	779	return ERR_MEM;
donatien	0:632c9925f013	780	}
donatien	0:632c9925f013	781
donatien	0:632c9925f013	782	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
donatien	0:632c9925f013	783
donatien	0:632c9925f013	784	pc->lastXMit = sys_jiffies();
donatien	0:632c9925f013	785
donatien	0:632c9925f013	786	if (!pc->pcomp \|\| protocol > 0xFF) {
donatien	0:632c9925f013	787	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
donatien	0:632c9925f013	788	}
donatien	0:632c9925f013	789	((u_char)pb->payload + i) = protocol & 0xFF;
donatien	0:632c9925f013	790
donatien	0:632c9925f013	791	pbuf_chain(pb, p);
donatien	0:632c9925f013	792	tot_len = pb->tot_len;
donatien	0:632c9925f013	793
donatien	0:632c9925f013	794	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
donatien	0:632c9925f013	795	LINK_STATS_INC(link.err);
donatien	0:632c9925f013	796	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:632c9925f013	797	return PPPERR_DEVICE;
donatien	0:632c9925f013	798	}
donatien	0:632c9925f013	799
donatien	0:632c9925f013	800	snmp_add_ifoutoctets(&pc->netif, tot_len);
donatien	0:632c9925f013	801	snmp_inc_ifoutucastpkts(&pc->netif);
donatien	0:632c9925f013	802	LINK_STATS_INC(link.xmit);
donatien	0:632c9925f013	803	return ERR_OK;
donatien	0:632c9925f013	804	}
donatien	0:632c9925f013	805	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	806
donatien	0:632c9925f013	807	/* Send a packet on the given connection. */
donatien	0:632c9925f013	808	static err_t
donatien	4:fd826cad83c0	809	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
donatien	0:632c9925f013	810	{
donatien	0:632c9925f013	811	int pd = (int)(size_t)netif->state;
donatien	0:632c9925f013	812	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	813	#if PPPOS_SUPPORT
donatien	0:632c9925f013	814	u_short protocol = PPP_IP;
donatien	0:632c9925f013	815	u_int fcsOut = PPP_INITFCS;
donatien	0:632c9925f013	816	struct pbuf headMB = NULL, tailMB = NULL, *p;
donatien	0:632c9925f013	817	u_char c;
donatien	0:632c9925f013	818	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	819
donatien	0:632c9925f013	820	LWIP_UNUSED_ARG(ipaddr);
donatien	0:632c9925f013	821
donatien	0:632c9925f013	822	/* Validate parameters. */
donatien	0:632c9925f013	823	/* We let any protocol value go through - it can't hurt us
donatien	0:632c9925f013	824	* and the peer will just drop it if it's not accepting it. */
donatien	0:632c9925f013	825	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
donatien	4:fd826cad83c0	826	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
donatien	0:632c9925f013	827	pd, PPP_IP, pb));
donatien	0:632c9925f013	828	LINK_STATS_INC(link.opterr);
donatien	0:632c9925f013	829	LINK_STATS_INC(link.drop);
donatien	0:632c9925f013	830	snmp_inc_ifoutdiscards(netif);
donatien	0:632c9925f013	831	return ERR_ARG;
donatien	0:632c9925f013	832	}
donatien	0:632c9925f013	833
donatien	0:632c9925f013	834	/* Check that the link is up. */
donatien	0:632c9925f013	835	if (lcp_phase[pd] == PHASE_DEAD) {
donatien	4:fd826cad83c0	836	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
donatien	0:632c9925f013	837	LINK_STATS_INC(link.rterr);
donatien	0:632c9925f013	838	LINK_STATS_INC(link.drop);
donatien	0:632c9925f013	839	snmp_inc_ifoutdiscards(netif);
donatien	0:632c9925f013	840	return ERR_RTE;
donatien	0:632c9925f013	841	}
donatien	0:632c9925f013	842
donatien	0:632c9925f013	843	#if PPPOE_SUPPORT
donatien	0:632c9925f013	844	if(pc->ethif) {
donatien	4:fd826cad83c0	845	return pppifOutputOverEthernet(pd, pb);
donatien	0:632c9925f013	846	}
donatien	0:632c9925f013	847	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	848
donatien	0:632c9925f013	849	#if PPPOS_SUPPORT
donatien	0:632c9925f013	850	/* Grab an output buffer. */
donatien	0:632c9925f013	851	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
donatien	0:632c9925f013	852	if (headMB == NULL) {
donatien	4:fd826cad83c0	853	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
donatien	0:632c9925f013	854	LINK_STATS_INC(link.memerr);
donatien	0:632c9925f013	855	LINK_STATS_INC(link.drop);
donatien	0:632c9925f013	856	snmp_inc_ifoutdiscards(netif);
donatien	0:632c9925f013	857	return ERR_MEM;
donatien	0:632c9925f013	858	}
donatien	0:632c9925f013	859
donatien	0:632c9925f013	860	#if VJ_SUPPORT
donatien	0:632c9925f013	861	/*
donatien	0:632c9925f013	862	* Attempt Van Jacobson header compression if VJ is configured and
donatien	0:632c9925f013	863	* this is an IP packet.
donatien	0:632c9925f013	864	*/
donatien	0:632c9925f013	865	if (protocol == PPP_IP && pc->vjEnabled) {
donatien	0:632c9925f013	866	switch (vj_compress_tcp(&pc->vjComp, pb)) {
donatien	0:632c9925f013	867	case TYPE_IP:
donatien	0:632c9925f013	868	/* No change...
donatien	0:632c9925f013	869	protocol = PPP_IP_PROTOCOL; */
donatien	0:632c9925f013	870	break;
donatien	0:632c9925f013	871	case TYPE_COMPRESSED_TCP:
donatien	0:632c9925f013	872	protocol = PPP_VJC_COMP;
donatien	0:632c9925f013	873	break;
donatien	0:632c9925f013	874	case TYPE_UNCOMPRESSED_TCP:
donatien	0:632c9925f013	875	protocol = PPP_VJC_UNCOMP;
donatien	0:632c9925f013	876	break;
donatien	0:632c9925f013	877	default:
donatien	4:fd826cad83c0	878	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
donatien	0:632c9925f013	879	LINK_STATS_INC(link.proterr);
donatien	0:632c9925f013	880	LINK_STATS_INC(link.drop);
donatien	0:632c9925f013	881	snmp_inc_ifoutdiscards(netif);
donatien	0:632c9925f013	882	pbuf_free(headMB);
donatien	0:632c9925f013	883	return ERR_VAL;
donatien	0:632c9925f013	884	}
donatien	0:632c9925f013	885	}
donatien	0:632c9925f013	886	#endif /* VJ_SUPPORT */
donatien	0:632c9925f013	887
donatien	0:632c9925f013	888	tailMB = headMB;
donatien	0:632c9925f013	889
donatien	0:632c9925f013	890	/* Build the PPP header. */
donatien	0:632c9925f013	891	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
donatien	0:632c9925f013	892	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
donatien	0:632c9925f013	893	}
donatien	0:632c9925f013	894
donatien	0:632c9925f013	895	pc->lastXMit = sys_jiffies();
donatien	0:632c9925f013	896	if (!pc->accomp) {
donatien	0:632c9925f013	897	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
donatien	0:632c9925f013	898	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
donatien	0:632c9925f013	899	fcsOut = PPP_FCS(fcsOut, PPP_UI);
donatien	0:632c9925f013	900	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
donatien	0:632c9925f013	901	}
donatien	0:632c9925f013	902	if (!pc->pcomp \|\| protocol > 0xFF) {
donatien	0:632c9925f013	903	c = (protocol >> 8) & 0xFF;
donatien	0:632c9925f013	904	fcsOut = PPP_FCS(fcsOut, c);
donatien	0:632c9925f013	905	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:632c9925f013	906	}
donatien	0:632c9925f013	907	c = protocol & 0xFF;
donatien	0:632c9925f013	908	fcsOut = PPP_FCS(fcsOut, c);
donatien	0:632c9925f013	909	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:632c9925f013	910
donatien	0:632c9925f013	911	/* Load packet. */
donatien	0:632c9925f013	912	for(p = pb; p; p = p->next) {
donatien	0:632c9925f013	913	int n;
donatien	0:632c9925f013	914	u_char *sPtr;
donatien	0:632c9925f013	915
donatien	0:632c9925f013	916	sPtr = (u_char*)p->payload;
donatien	0:632c9925f013	917	n = p->len;
donatien	0:632c9925f013	918	while (n-- > 0) {
donatien	0:632c9925f013	919	c = *sPtr++;
donatien	0:632c9925f013	920
donatien	0:632c9925f013	921	/* Update FCS before checking for special characters. */
donatien	0:632c9925f013	922	fcsOut = PPP_FCS(fcsOut, c);
donatien	0:632c9925f013	923
donatien	0:632c9925f013	924	/* Copy to output buffer escaping special characters. */
donatien	0:632c9925f013	925	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:632c9925f013	926	}
donatien	0:632c9925f013	927	}
donatien	0:632c9925f013	928
donatien	0:632c9925f013	929	/* Add FCS and trailing flag. */
donatien	0:632c9925f013	930	c = ~fcsOut & 0xFF;
donatien	0:632c9925f013	931	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:632c9925f013	932	c = (~fcsOut >> 8) & 0xFF;
donatien	0:632c9925f013	933	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:632c9925f013	934	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
donatien	0:632c9925f013	935
donatien	0:632c9925f013	936	/* If we failed to complete the packet, throw it away. */
donatien	0:632c9925f013	937	if (!tailMB) {
donatien	0:632c9925f013	938	PPPDEBUG(LOG_WARNING,
donatien	4:fd826cad83c0	939	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
donatien	0:632c9925f013	940	pd, protocol));
donatien	0:632c9925f013	941	pbuf_free(headMB);
donatien	0:632c9925f013	942	LINK_STATS_INC(link.memerr);
donatien	0:632c9925f013	943	LINK_STATS_INC(link.drop);
donatien	0:632c9925f013	944	snmp_inc_ifoutdiscards(netif);
donatien	0:632c9925f013	945	return ERR_MEM;
donatien	0:632c9925f013	946	}
donatien	0:632c9925f013	947
donatien	0:632c9925f013	948	/* Send it. */
donatien	4:fd826cad83c0	949	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
donatien	0:632c9925f013	950
donatien	0:632c9925f013	951	nPut(pc, headMB);
donatien	0:632c9925f013	952	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	953
donatien	0:632c9925f013	954	return ERR_OK;
donatien	0:632c9925f013	955	}
donatien	0:632c9925f013	956
donatien	0:632c9925f013	957	/* Get and set parameters for the given connection.
donatien	0:632c9925f013	958	* Return 0 on success, an error code on failure. */
donatien	0:632c9925f013	959	int
donatien	0:632c9925f013	960	pppIOCtl(int pd, int cmd, void *arg)
donatien	0:632c9925f013	961	{
donatien	0:632c9925f013	962	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	963	int st = 0;
donatien	0:632c9925f013	964
donatien	0:632c9925f013	965	if (pd < 0 \|\| pd >= NUM_PPP) {
donatien	0:632c9925f013	966	st = PPPERR_PARAM;
donatien	0:632c9925f013	967	} else {
donatien	0:632c9925f013	968	switch(cmd) {
donatien	0:632c9925f013	969	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
donatien	0:632c9925f013	970	if (arg) {
donatien	0:632c9925f013	971	(int )arg = (int)(pc->if_up);
donatien	0:632c9925f013	972	} else {
donatien	0:632c9925f013	973	st = PPPERR_PARAM;
donatien	0:632c9925f013	974	}
donatien	0:632c9925f013	975	break;
donatien	0:632c9925f013	976	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
donatien	0:632c9925f013	977	if (arg) {
donatien	0:632c9925f013	978	pc->errCode = (int )arg;
donatien	0:632c9925f013	979	} else {
donatien	0:632c9925f013	980	st = PPPERR_PARAM;
donatien	0:632c9925f013	981	}
donatien	0:632c9925f013	982	break;
donatien	0:632c9925f013	983	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
donatien	0:632c9925f013	984	if (arg) {
donatien	0:632c9925f013	985	(int )arg = (int)(pc->errCode);
donatien	0:632c9925f013	986	} else {
donatien	0:632c9925f013	987	st = PPPERR_PARAM;
donatien	0:632c9925f013	988	}
donatien	0:632c9925f013	989	break;
donatien	0:632c9925f013	990	#if PPPOS_SUPPORT
donatien	0:632c9925f013	991	case PPPCTLG_FD: /* Get the fd associated with the ppp */
donatien	0:632c9925f013	992	if (arg) {
donatien	0:632c9925f013	993	(sio_fd_t )arg = pc->fd;
donatien	0:632c9925f013	994	} else {
donatien	0:632c9925f013	995	st = PPPERR_PARAM;
donatien	0:632c9925f013	996	}
donatien	0:632c9925f013	997	break;
donatien	0:632c9925f013	998	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	999	default:
donatien	0:632c9925f013	1000	st = PPPERR_PARAM;
donatien	0:632c9925f013	1001	break;
donatien	0:632c9925f013	1002	}
donatien	0:632c9925f013	1003	}
donatien	0:632c9925f013	1004
donatien	0:632c9925f013	1005	return st;
donatien	0:632c9925f013	1006	}
donatien	0:632c9925f013	1007
donatien	0:632c9925f013	1008	/*
donatien	0:632c9925f013	1009	* Return the Maximum Transmission Unit for the given PPP connection.
donatien	0:632c9925f013	1010	*/
donatien	0:632c9925f013	1011	u_short
donatien	0:632c9925f013	1012	pppMTU(int pd)
donatien	0:632c9925f013	1013	{
donatien	0:632c9925f013	1014	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	1015	u_short st;
donatien	0:632c9925f013	1016
donatien	0:632c9925f013	1017	/* Validate parameters. */
donatien	0:632c9925f013	1018	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:632c9925f013	1019	st = 0;
donatien	0:632c9925f013	1020	} else {
donatien	0:632c9925f013	1021	st = pc->mtu;
donatien	0:632c9925f013	1022	}
donatien	0:632c9925f013	1023
donatien	0:632c9925f013	1024	return st;
donatien	0:632c9925f013	1025	}
donatien	0:632c9925f013	1026
donatien	0:632c9925f013	1027	#if PPPOE_SUPPORT
donatien	0:632c9925f013	1028	int
donatien	0:632c9925f013	1029	pppWriteOverEthernet(int pd, const u_char *s, int n)
donatien	0:632c9925f013	1030	{
donatien	0:632c9925f013	1031	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	1032	struct pbuf *pb;
donatien	0:632c9925f013	1033
donatien	0:632c9925f013	1034	/* skip address & flags */
donatien	0:632c9925f013	1035	s += 2;
donatien	0:632c9925f013	1036	n -= 2;
donatien	0:632c9925f013	1037
donatien	0:632c9925f013	1038	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
donatien	0:632c9925f013	1039	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
donatien	0:632c9925f013	1040	if(!pb) {
donatien	0:632c9925f013	1041	LINK_STATS_INC(link.memerr);
donatien	0:632c9925f013	1042	LINK_STATS_INC(link.proterr);
donatien	0:632c9925f013	1043	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:632c9925f013	1044	return PPPERR_ALLOC;
donatien	0:632c9925f013	1045	}
donatien	0:632c9925f013	1046
donatien	0:632c9925f013	1047	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
donatien	0:632c9925f013	1048
donatien	0:632c9925f013	1049	pc->lastXMit = sys_jiffies();
donatien	0:632c9925f013	1050
donatien	0:632c9925f013	1051	MEMCPY(pb->payload, s, n);
donatien	0:632c9925f013	1052
donatien	0:632c9925f013	1053	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
donatien	0:632c9925f013	1054	LINK_STATS_INC(link.err);
donatien	0:632c9925f013	1055	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:632c9925f013	1056	return PPPERR_DEVICE;
donatien	0:632c9925f013	1057	}
donatien	0:632c9925f013	1058
donatien	0:632c9925f013	1059	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
donatien	0:632c9925f013	1060	snmp_inc_ifoutucastpkts(&pc->netif);
donatien	0:632c9925f013	1061	LINK_STATS_INC(link.xmit);
donatien	0:632c9925f013	1062	return PPPERR_NONE;
donatien	0:632c9925f013	1063	}
donatien	0:632c9925f013	1064	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	1065
donatien	0:632c9925f013	1066	/*
donatien	0:632c9925f013	1067	* Write n characters to a ppp link.
donatien	0:632c9925f013	1068	* RETURN: >= 0 Number of characters written
donatien	0:632c9925f013	1069	* -1 Failed to write to device
donatien	0:632c9925f013	1070	*/
donatien	0:632c9925f013	1071	int
donatien	0:632c9925f013	1072	pppWrite(int pd, const u_char *s, int n)
donatien	0:632c9925f013	1073	{
donatien	0:632c9925f013	1074	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	1075	#if PPPOS_SUPPORT
donatien	0:632c9925f013	1076	u_char c;
donatien	0:632c9925f013	1077	u_int fcsOut;
donatien	0:632c9925f013	1078	struct pbuf headMB, tailMB;
donatien	0:632c9925f013	1079	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	1080
donatien	0:632c9925f013	1081	#if PPPOE_SUPPORT
donatien	0:632c9925f013	1082	if(pc->ethif) {
donatien	0:632c9925f013	1083	return pppWriteOverEthernet(pd, s, n);
donatien	0:632c9925f013	1084	}
donatien	0:632c9925f013	1085	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	1086
donatien	0:632c9925f013	1087	#if PPPOS_SUPPORT
donatien	0:632c9925f013	1088	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
donatien	0:632c9925f013	1089	if (headMB == NULL) {
donatien	0:632c9925f013	1090	LINK_STATS_INC(link.memerr);
donatien	0:632c9925f013	1091	LINK_STATS_INC(link.proterr);
donatien	0:632c9925f013	1092	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:632c9925f013	1093	return PPPERR_ALLOC;
donatien	0:632c9925f013	1094	}
donatien	0:632c9925f013	1095
donatien	0:632c9925f013	1096	tailMB = headMB;
donatien	0:632c9925f013	1097
donatien	0:632c9925f013	1098	/* If the link has been idle, we'll send a fresh flag character to
donatien	0:632c9925f013	1099	* flush any noise. */
donatien	0:632c9925f013	1100	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
donatien	0:632c9925f013	1101	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
donatien	0:632c9925f013	1102	}
donatien	0:632c9925f013	1103	pc->lastXMit = sys_jiffies();
donatien	0:632c9925f013	1104
donatien	0:632c9925f013	1105	fcsOut = PPP_INITFCS;
donatien	0:632c9925f013	1106	/* Load output buffer. */
donatien	0:632c9925f013	1107	while (n-- > 0) {
donatien	0:632c9925f013	1108	c = *s++;
donatien	0:632c9925f013	1109
donatien	0:632c9925f013	1110	/* Update FCS before checking for special characters. */
donatien	0:632c9925f013	1111	fcsOut = PPP_FCS(fcsOut, c);
donatien	0:632c9925f013	1112
donatien	0:632c9925f013	1113	/* Copy to output buffer escaping special characters. */
donatien	0:632c9925f013	1114	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:632c9925f013	1115	}
donatien	0:632c9925f013	1116
donatien	0:632c9925f013	1117	/* Add FCS and trailing flag. */
donatien	0:632c9925f013	1118	c = ~fcsOut & 0xFF;
donatien	0:632c9925f013	1119	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:632c9925f013	1120	c = (~fcsOut >> 8) & 0xFF;
donatien	0:632c9925f013	1121	tailMB = pppAppend(c, tailMB, &pc->outACCM);
donatien	0:632c9925f013	1122	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
donatien	0:632c9925f013	1123
donatien	0:632c9925f013	1124	/* If we failed to complete the packet, throw it away.
donatien	0:632c9925f013	1125	* Otherwise send it. */
donatien	0:632c9925f013	1126	if (!tailMB) {
donatien	0:632c9925f013	1127	PPPDEBUG(LOG_WARNING,
donatien	0:632c9925f013	1128	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
donatien	0:632c9925f013	1129	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
donatien	0:632c9925f013	1130	pbuf_free(headMB);
donatien	0:632c9925f013	1131	LINK_STATS_INC(link.memerr);
donatien	0:632c9925f013	1132	LINK_STATS_INC(link.proterr);
donatien	0:632c9925f013	1133	snmp_inc_ifoutdiscards(&pc->netif);
donatien	0:632c9925f013	1134	return PPPERR_ALLOC;
donatien	0:632c9925f013	1135	}
donatien	0:632c9925f013	1136
donatien	0:632c9925f013	1137	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
donatien	0:632c9925f013	1138	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
donatien	0:632c9925f013	1139	nPut(pc, headMB);
donatien	0:632c9925f013	1140	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	1141
donatien	0:632c9925f013	1142	return PPPERR_NONE;
donatien	0:632c9925f013	1143	}
donatien	0:632c9925f013	1144
donatien	0:632c9925f013	1145	/*
donatien	0:632c9925f013	1146	* ppp_send_config - configure the transmit characteristics of
donatien	0:632c9925f013	1147	* the ppp interface.
donatien	0:632c9925f013	1148	*/
donatien	0:632c9925f013	1149	void
donatien	0:632c9925f013	1150	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
donatien	0:632c9925f013	1151	{
donatien	0:632c9925f013	1152	PPPControl *pc = &pppControl[unit];
donatien	0:632c9925f013	1153	int i;
donatien	0:632c9925f013	1154
donatien	0:632c9925f013	1155	pc->mtu = mtu;
donatien	0:632c9925f013	1156	pc->pcomp = pcomp;
donatien	0:632c9925f013	1157	pc->accomp = accomp;
donatien	0:632c9925f013	1158
donatien	0:632c9925f013	1159	/* Load the ACCM bits for the 32 control codes. */
donatien	0:632c9925f013	1160	for (i = 0; i < 32/8; i++) {
donatien	0:632c9925f013	1161	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
donatien	0:632c9925f013	1162	}
donatien	0:632c9925f013	1163	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
donatien	0:632c9925f013	1164	unit,
donatien	0:632c9925f013	1165	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
donatien	0:632c9925f013	1166	}
donatien	0:632c9925f013	1167
donatien	0:632c9925f013	1168
donatien	0:632c9925f013	1169	/*
donatien	0:632c9925f013	1170	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
donatien	0:632c9925f013	1171	*/
donatien	0:632c9925f013	1172	void
donatien	0:632c9925f013	1173	ppp_set_xaccm(int unit, ext_accm *accm)
donatien	0:632c9925f013	1174	{
donatien	0:632c9925f013	1175	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
donatien	0:632c9925f013	1176	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
donatien	0:632c9925f013	1177	unit,
donatien	0:632c9925f013	1178	pppControl[unit].outACCM[0],
donatien	0:632c9925f013	1179	pppControl[unit].outACCM[1],
donatien	0:632c9925f013	1180	pppControl[unit].outACCM[2],
donatien	0:632c9925f013	1181	pppControl[unit].outACCM[3]));
donatien	0:632c9925f013	1182	}
donatien	0:632c9925f013	1183
donatien	0:632c9925f013	1184
donatien	0:632c9925f013	1185	/*
donatien	0:632c9925f013	1186	* ppp_recv_config - configure the receive-side characteristics of
donatien	0:632c9925f013	1187	* the ppp interface.
donatien	0:632c9925f013	1188	*/
donatien	0:632c9925f013	1189	void
donatien	0:632c9925f013	1190	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
donatien	0:632c9925f013	1191	{
donatien	0:632c9925f013	1192	PPPControl *pc = &pppControl[unit];
donatien	0:632c9925f013	1193	int i;
donatien	0:632c9925f013	1194	SYS_ARCH_DECL_PROTECT(lev);
donatien	0:632c9925f013	1195
donatien	0:632c9925f013	1196	LWIP_UNUSED_ARG(accomp);
donatien	0:632c9925f013	1197	LWIP_UNUSED_ARG(pcomp);
donatien	0:632c9925f013	1198	LWIP_UNUSED_ARG(mru);
donatien	0:632c9925f013	1199
donatien	0:632c9925f013	1200	/* Load the ACCM bits for the 32 control codes. */
donatien	0:632c9925f013	1201	SYS_ARCH_PROTECT(lev);
donatien	0:632c9925f013	1202	for (i = 0; i < 32 / 8; i++) {
donatien	0:632c9925f013	1203	/* @todo: does this work? ext_accm has been modified from pppd! */
donatien	0:632c9925f013	1204	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
donatien	0:632c9925f013	1205	}
donatien	0:632c9925f013	1206	SYS_ARCH_UNPROTECT(lev);
donatien	0:632c9925f013	1207	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
donatien	0:632c9925f013	1208	unit,
donatien	0:632c9925f013	1209	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
donatien	0:632c9925f013	1210	}
donatien	0:632c9925f013	1211
donatien	0:632c9925f013	1212	#if 0
donatien	0:632c9925f013	1213	/*
donatien	0:632c9925f013	1214	* ccp_test - ask kernel whether a given compression method
donatien	0:632c9925f013	1215	* is acceptable for use. Returns 1 if the method and parameters
donatien	0:632c9925f013	1216	* are OK, 0 if the method is known but the parameters are not OK
donatien	0:632c9925f013	1217	* (e.g. code size should be reduced), or -1 if the method is unknown.
donatien	0:632c9925f013	1218	*/
donatien	0:632c9925f013	1219	int
donatien	0:632c9925f013	1220	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
donatien	0:632c9925f013	1221	{
donatien	0:632c9925f013	1222	return 0; /* XXX Currently no compression. */
donatien	0:632c9925f013	1223	}
donatien	0:632c9925f013	1224
donatien	0:632c9925f013	1225	/*
donatien	0:632c9925f013	1226	* ccp_flags_set - inform kernel about the current state of CCP.
donatien	0:632c9925f013	1227	*/
donatien	0:632c9925f013	1228	void
donatien	0:632c9925f013	1229	ccp_flags_set(int unit, int isopen, int isup)
donatien	0:632c9925f013	1230	{
donatien	0:632c9925f013	1231	/* XXX */
donatien	0:632c9925f013	1232	}
donatien	0:632c9925f013	1233
donatien	0:632c9925f013	1234	/*
donatien	0:632c9925f013	1235	* ccp_fatal_error - returns 1 if decompression was disabled as a
donatien	0:632c9925f013	1236	* result of an error detected after decompression of a packet,
donatien	0:632c9925f013	1237	* 0 otherwise. This is necessary because of patent nonsense.
donatien	0:632c9925f013	1238	*/
donatien	0:632c9925f013	1239	int
donatien	0:632c9925f013	1240	ccp_fatal_error(int unit)
donatien	0:632c9925f013	1241	{
donatien	0:632c9925f013	1242	/* XXX */
donatien	0:632c9925f013	1243	return 0;
donatien	0:632c9925f013	1244	}
donatien	0:632c9925f013	1245	#endif
donatien	0:632c9925f013	1246
donatien	0:632c9925f013	1247	/*
donatien	0:632c9925f013	1248	* get_idle_time - return how long the link has been idle.
donatien	0:632c9925f013	1249	*/
donatien	0:632c9925f013	1250	int
donatien	0:632c9925f013	1251	get_idle_time(int u, struct ppp_idle *ip)
donatien	0:632c9925f013	1252	{
donatien	0:632c9925f013	1253	/* XXX */
donatien	0:632c9925f013	1254	LWIP_UNUSED_ARG(u);
donatien	0:632c9925f013	1255	LWIP_UNUSED_ARG(ip);
donatien	0:632c9925f013	1256
donatien	0:632c9925f013	1257	return 0;
donatien	0:632c9925f013	1258	}
donatien	0:632c9925f013	1259
donatien	0:632c9925f013	1260
donatien	0:632c9925f013	1261	/*
donatien	0:632c9925f013	1262	* Return user specified netmask, modified by any mask we might determine
donatien	0:632c9925f013	1263	* for address `addr' (in network byte order).
donatien	0:632c9925f013	1264	* Here we scan through the system's list of interfaces, looking for
donatien	0:632c9925f013	1265	* any non-point-to-point interfaces which might appear to be on the same
donatien	0:632c9925f013	1266	* network as `addr'. If we find any, we OR in their netmask to the
donatien	0:632c9925f013	1267	* user-specified netmask.
donatien	0:632c9925f013	1268	*/
donatien	0:632c9925f013	1269	u32_t
donatien	0:632c9925f013	1270	GetMask(u32_t addr)
donatien	0:632c9925f013	1271	{
donatien	0:632c9925f013	1272	u32_t mask, nmask;
donatien	0:632c9925f013	1273
donatien	0:632c9925f013	1274	htonl(addr);
donatien	0:632c9925f013	1275	if (IP_CLASSA(addr)) { /* determine network mask for address class */
donatien	0:632c9925f013	1276	nmask = IP_CLASSA_NET;
donatien	0:632c9925f013	1277	} else if (IP_CLASSB(addr)) {
donatien	0:632c9925f013	1278	nmask = IP_CLASSB_NET;
donatien	0:632c9925f013	1279	} else {
donatien	0:632c9925f013	1280	nmask = IP_CLASSC_NET;
donatien	0:632c9925f013	1281	}
donatien	0:632c9925f013	1282
donatien	0:632c9925f013	1283	/* class D nets are disallowed by bad_ip_adrs */
donatien	0:632c9925f013	1284	mask = subnetMask \| htonl(nmask);
donatien	0:632c9925f013	1285
donatien	0:632c9925f013	1286	/* XXX
donatien	0:632c9925f013	1287	* Scan through the system's network interfaces.
donatien	0:632c9925f013	1288	* Get each netmask and OR them into our mask.
donatien	0:632c9925f013	1289	*/
donatien	0:632c9925f013	1290
donatien	0:632c9925f013	1291	return mask;
donatien	0:632c9925f013	1292	}
donatien	0:632c9925f013	1293
donatien	0:632c9925f013	1294	/*
donatien	0:632c9925f013	1295	* sifvjcomp - config tcp header compression
donatien	0:632c9925f013	1296	*/
donatien	0:632c9925f013	1297	int
donatien	0:632c9925f013	1298	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
donatien	0:632c9925f013	1299	{
donatien	0:632c9925f013	1300	#if PPPOS_SUPPORT && VJ_SUPPORT
donatien	0:632c9925f013	1301	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	1302
donatien	0:632c9925f013	1303	pc->vjEnabled = vjcomp;
donatien	0:632c9925f013	1304	pc->vjComp.compressSlot = cidcomp;
donatien	0:632c9925f013	1305	pc->vjComp.maxSlotIndex = maxcid;
donatien	0:632c9925f013	1306	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
donatien	0:632c9925f013	1307	vjcomp, cidcomp, maxcid));
donatien	0:632c9925f013	1308	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:632c9925f013	1309	LWIP_UNUSED_ARG(pd);
donatien	0:632c9925f013	1310	LWIP_UNUSED_ARG(vjcomp);
donatien	0:632c9925f013	1311	LWIP_UNUSED_ARG(cidcomp);
donatien	0:632c9925f013	1312	LWIP_UNUSED_ARG(maxcid);
donatien	0:632c9925f013	1313	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:632c9925f013	1314
donatien	0:632c9925f013	1315	return 0;
donatien	0:632c9925f013	1316	}
donatien	0:632c9925f013	1317
donatien	0:632c9925f013	1318	/*
donatien	4:fd826cad83c0	1319	* pppifNetifInit - netif init callback
donatien	0:632c9925f013	1320	*/
donatien	0:632c9925f013	1321	static err_t
donatien	4:fd826cad83c0	1322	pppifNetifInit(struct netif *netif)
donatien	0:632c9925f013	1323	{
donatien	0:632c9925f013	1324	netif->name[0] = 'p';
donatien	0:632c9925f013	1325	netif->name[1] = 'p';
donatien	4:fd826cad83c0	1326	netif->output = pppifOutput;
donatien	0:632c9925f013	1327	netif->mtu = pppMTU((int)(size_t)netif->state);
donatien	0:632c9925f013	1328	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
donatien	0:632c9925f013	1329	#if LWIP_NETIF_HOSTNAME
donatien	0:632c9925f013	1330	/* @todo: Initialize interface hostname */
donatien	0:632c9925f013	1331	/* netif_set_hostname(netif, "lwip"); */
donatien	0:632c9925f013	1332	#endif /* LWIP_NETIF_HOSTNAME */
donatien	0:632c9925f013	1333	return ERR_OK;
donatien	0:632c9925f013	1334	}
donatien	0:632c9925f013	1335
donatien	0:632c9925f013	1336
donatien	0:632c9925f013	1337	/*
donatien	0:632c9925f013	1338	* sifup - Config the interface up and enable IP packets to pass.
donatien	0:632c9925f013	1339	*/
donatien	0:632c9925f013	1340	int
donatien	0:632c9925f013	1341	sifup(int pd)
donatien	0:632c9925f013	1342	{
donatien	0:632c9925f013	1343	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	1344	int st = 1;
donatien	0:632c9925f013	1345
donatien	0:632c9925f013	1346	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:632c9925f013	1347	st = 0;
donatien	0:632c9925f013	1348	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
donatien	0:632c9925f013	1349	} else {
donatien	0:632c9925f013	1350	netif_remove(&pc->netif);
donatien	0:632c9925f013	1351	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
donatien	4:fd826cad83c0	1352	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
donatien	0:632c9925f013	1353	netif_set_up(&pc->netif);
donatien	0:632c9925f013	1354	pc->if_up = 1;
donatien	0:632c9925f013	1355	pc->errCode = PPPERR_NONE;
donatien	0:632c9925f013	1356
donatien	0:632c9925f013	1357	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
donatien	0:632c9925f013	1358	if (pc->linkStatusCB) {
donatien	0:632c9925f013	1359	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
donatien	0:632c9925f013	1360	}
donatien	0:632c9925f013	1361	} else {
donatien	0:632c9925f013	1362	st = 0;
donatien	0:632c9925f013	1363	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
donatien	0:632c9925f013	1364	}
donatien	0:632c9925f013	1365	}
donatien	0:632c9925f013	1366
donatien	0:632c9925f013	1367	return st;
donatien	0:632c9925f013	1368	}
donatien	0:632c9925f013	1369
donatien	0:632c9925f013	1370	/*
donatien	0:632c9925f013	1371	* sifnpmode - Set the mode for handling packets for a given NP.
donatien	0:632c9925f013	1372	*/
donatien	0:632c9925f013	1373	int
donatien	0:632c9925f013	1374	sifnpmode(int u, int proto, enum NPmode mode)
donatien	0:632c9925f013	1375	{
donatien	0:632c9925f013	1376	LWIP_UNUSED_ARG(u);
donatien	0:632c9925f013	1377	LWIP_UNUSED_ARG(proto);
donatien	0:632c9925f013	1378	LWIP_UNUSED_ARG(mode);
donatien	0:632c9925f013	1379	return 0;
donatien	0:632c9925f013	1380	}
donatien	0:632c9925f013	1381
donatien	0:632c9925f013	1382	/*
donatien	0:632c9925f013	1383	* sifdown - Config the interface down and disable IP.
donatien	0:632c9925f013	1384	*/
donatien	0:632c9925f013	1385	int
donatien	0:632c9925f013	1386	sifdown(int pd)
donatien	0:632c9925f013	1387	{
donatien	0:632c9925f013	1388	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	1389	int st = 1;
donatien	0:632c9925f013	1390
donatien	0:632c9925f013	1391	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:632c9925f013	1392	st = 0;
donatien	0:632c9925f013	1393	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
donatien	0:632c9925f013	1394	} else {
donatien	0:632c9925f013	1395	pc->if_up = 0;
donatien	0:632c9925f013	1396	/* make sure the netif status callback is called */
donatien	0:632c9925f013	1397	netif_set_down(&pc->netif);
donatien	0:632c9925f013	1398	netif_remove(&pc->netif);
donatien	0:632c9925f013	1399	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
donatien	0:632c9925f013	1400	if (pc->linkStatusCB) {
donatien	0:632c9925f013	1401	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
donatien	0:632c9925f013	1402	}
donatien	0:632c9925f013	1403	}
donatien	0:632c9925f013	1404	return st;
donatien	0:632c9925f013	1405	}
donatien	0:632c9925f013	1406
donatien	0:632c9925f013	1407	/**
donatien	0:632c9925f013	1408	* sifaddr - Config the interface IP addresses and netmask.
donatien	0:632c9925f013	1409	* @param pd Interface unit ???
donatien	0:632c9925f013	1410	* @param o Our IP address ???
donatien	0:632c9925f013	1411	* @param h His IP address ???
donatien	0:632c9925f013	1412	* @param m IP subnet mask ???
donatien	0:632c9925f013	1413	* @param ns1 Primary DNS
donatien	0:632c9925f013	1414	* @param ns2 Secondary DNS
donatien	0:632c9925f013	1415	*/
donatien	0:632c9925f013	1416	int
donatien	0:632c9925f013	1417	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
donatien	0:632c9925f013	1418	{
donatien	0:632c9925f013	1419	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	1420	int st = 1;
donatien	0:632c9925f013	1421
donatien	0:632c9925f013	1422	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:632c9925f013	1423	st = 0;
donatien	0:632c9925f013	1424	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
donatien	0:632c9925f013	1425	} else {
donatien	0:632c9925f013	1426	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
donatien	0:632c9925f013	1427	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
donatien	0:632c9925f013	1428	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
donatien	0:632c9925f013	1429	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
donatien	0:632c9925f013	1430	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
donatien	0:632c9925f013	1431	}
donatien	0:632c9925f013	1432	return st;
donatien	0:632c9925f013	1433	}
donatien	0:632c9925f013	1434
donatien	0:632c9925f013	1435	/**
donatien	0:632c9925f013	1436	* cifaddr - Clear the interface IP addresses, and delete routes
donatien	0:632c9925f013	1437	* through the interface if possible.
donatien	0:632c9925f013	1438	* @param pd Interface unit ???
donatien	0:632c9925f013	1439	* @param o Our IP address ???
donatien	0:632c9925f013	1440	* @param h IP broadcast address ???
donatien	0:632c9925f013	1441	*/
donatien	0:632c9925f013	1442	int
donatien	0:632c9925f013	1443	cifaddr( int pd, u32_t o, u32_t h)
donatien	0:632c9925f013	1444	{
donatien	0:632c9925f013	1445	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	1446	int st = 1;
donatien	0:632c9925f013	1447
donatien	0:632c9925f013	1448	LWIP_UNUSED_ARG(o);
donatien	0:632c9925f013	1449	LWIP_UNUSED_ARG(h);
donatien	0:632c9925f013	1450	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:632c9925f013	1451	st = 0;
donatien	0:632c9925f013	1452	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
donatien	0:632c9925f013	1453	} else {
donatien	0:632c9925f013	1454	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
donatien	0:632c9925f013	1455	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
donatien	0:632c9925f013	1456	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
donatien	0:632c9925f013	1457	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
donatien	0:632c9925f013	1458	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
donatien	0:632c9925f013	1459	}
donatien	0:632c9925f013	1460	return st;
donatien	0:632c9925f013	1461	}
donatien	0:632c9925f013	1462
donatien	0:632c9925f013	1463	/*
donatien	0:632c9925f013	1464	* sifdefaultroute - assign a default route through the address given.
donatien	0:632c9925f013	1465	*/
donatien	0:632c9925f013	1466	int
donatien	0:632c9925f013	1467	sifdefaultroute(int pd, u32_t l, u32_t g)
donatien	0:632c9925f013	1468	{
donatien	0:632c9925f013	1469	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	1470	int st = 1;
donatien	0:632c9925f013	1471
donatien	0:632c9925f013	1472	LWIP_UNUSED_ARG(l);
donatien	0:632c9925f013	1473	LWIP_UNUSED_ARG(g);
donatien	0:632c9925f013	1474
donatien	0:632c9925f013	1475	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:632c9925f013	1476	st = 0;
donatien	0:632c9925f013	1477	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
donatien	0:632c9925f013	1478	} else {
donatien	0:632c9925f013	1479	netif_set_default(&pc->netif);
donatien	0:632c9925f013	1480	}
donatien	0:632c9925f013	1481
donatien	0:632c9925f013	1482	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
donatien	0:632c9925f013	1483
donatien	0:632c9925f013	1484	return st;
donatien	0:632c9925f013	1485	}
donatien	0:632c9925f013	1486
donatien	0:632c9925f013	1487	/*
donatien	0:632c9925f013	1488	* cifdefaultroute - delete a default route through the address given.
donatien	0:632c9925f013	1489	*/
donatien	0:632c9925f013	1490	int
donatien	0:632c9925f013	1491	cifdefaultroute(int pd, u32_t l, u32_t g)
donatien	0:632c9925f013	1492	{
donatien	0:632c9925f013	1493	PPPControl *pc = &pppControl[pd];
donatien	0:632c9925f013	1494	int st = 1;
donatien	0:632c9925f013	1495
donatien	0:632c9925f013	1496	LWIP_UNUSED_ARG(l);
donatien	0:632c9925f013	1497	LWIP_UNUSED_ARG(g);
donatien	0:632c9925f013	1498
donatien	0:632c9925f013	1499	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
donatien	0:632c9925f013	1500	st = 0;
donatien	0:632c9925f013	1501	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
donatien	0:632c9925f013	1502	} else {
donatien	0:632c9925f013	1503	netif_set_default(NULL);
donatien	0:632c9925f013	1504	}
donatien	0:632c9925f013	1505
donatien	0:632c9925f013	1506	return st;
donatien	0:632c9925f013	1507	}
donatien	0:632c9925f013	1508
donatien	0:632c9925f013	1509	/**********************************/
donatien	0:632c9925f013	1510	/* LOCAL FUNCTION DEFINITIONS */
donatien	0:632c9925f013	1511	/**********************************/
donatien	0:632c9925f013	1512
donatien	0:632c9925f013	1513	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
donatien	0:632c9925f013	1514	/* The main PPP process function. This implements the state machine according
donatien	0:632c9925f013	1515	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
donatien	0:632c9925f013	1516	static void
donatien	0:632c9925f013	1517	pppInputThread(void *arg)
donatien	0:632c9925f013	1518	{
donatien	0:632c9925f013	1519	int count;
donatien	0:632c9925f013	1520	PPPControlRx *pcrx = arg;
donatien	0:632c9925f013	1521
donatien	0:632c9925f013	1522	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
donatien	0:632c9925f013	1523	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
donatien	0:632c9925f013	1524	if(count > 0) {
donatien	0:632c9925f013	1525	pppInProc(pcrx, pcrx->rxbuf, count);
donatien	0:632c9925f013	1526	} else {
donatien	0:632c9925f013	1527	/* nothing received, give other tasks a chance to run */
donatien	0:632c9925f013	1528	sys_msleep(1);
donatien	0:632c9925f013	1529	}
donatien	0:632c9925f013	1530	}
donatien	0:632c9925f013	1531	}
donatien	0:632c9925f013	1532	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
donatien	0:632c9925f013	1533
donatien	0:632c9925f013	1534	#if PPPOE_SUPPORT
donatien	0:632c9925f013	1535
donatien	0:632c9925f013	1536	void
donatien	0:632c9925f013	1537	pppOverEthernetInitFailed(int pd)
donatien	0:632c9925f013	1538	{
donatien	0:632c9925f013	1539	PPPControl* pc;
donatien	0:632c9925f013	1540
donatien	0:632c9925f013	1541	pppHup(pd);
donatien	0:632c9925f013	1542	pppStop(pd);
donatien	0:632c9925f013	1543
donatien	0:632c9925f013	1544	pc = &pppControl[pd];
donatien	0:632c9925f013	1545	pppoe_destroy(&pc->netif);
donatien	0:632c9925f013	1546	pc->openFlag = 0;
donatien	0:632c9925f013	1547
donatien	0:632c9925f013	1548	if(pc->linkStatusCB) {
donatien	0:632c9925f013	1549	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
donatien	0:632c9925f013	1550	}
donatien	0:632c9925f013	1551	}
donatien	0:632c9925f013	1552
donatien	0:632c9925f013	1553	static void
donatien	0:632c9925f013	1554	pppOverEthernetLinkStatusCB(int pd, int up)
donatien	0:632c9925f013	1555	{
donatien	0:632c9925f013	1556	if(up) {
donatien	0:632c9925f013	1557	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
donatien	0:632c9925f013	1558	pppStart(pd);
donatien	0:632c9925f013	1559	} else {
donatien	0:632c9925f013	1560	pppOverEthernetInitFailed(pd);
donatien	0:632c9925f013	1561	}
donatien	0:632c9925f013	1562	}
donatien	0:632c9925f013	1563	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	1564
donatien	0:632c9925f013	1565	struct pbuf *
donatien	0:632c9925f013	1566	pppSingleBuf(struct pbuf *p)
donatien	0:632c9925f013	1567	{
donatien	0:632c9925f013	1568	struct pbuf q, b;
donatien	0:632c9925f013	1569	u_char *pl;
donatien	0:632c9925f013	1570
donatien	0:632c9925f013	1571	if(p->tot_len == p->len) {
donatien	0:632c9925f013	1572	return p;
donatien	0:632c9925f013	1573	}
donatien	0:632c9925f013	1574
donatien	0:632c9925f013	1575	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
donatien	0:632c9925f013	1576	if(!q) {
donatien	0:632c9925f013	1577	PPPDEBUG(LOG_ERR,
donatien	0:632c9925f013	1578	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
donatien	0:632c9925f013	1579	return p; /* live dangerously */
donatien	0:632c9925f013	1580	}
donatien	0:632c9925f013	1581
donatien	5:dd63a1e02b1b	1582	for(b = p, pl = (u_char *) q->payload; b != NULL; b = b->next) {
donatien	0:632c9925f013	1583	MEMCPY(pl, b->payload, b->len);
donatien	0:632c9925f013	1584	pl += b->len;
donatien	0:632c9925f013	1585	}
donatien	0:632c9925f013	1586
donatien	0:632c9925f013	1587	pbuf_free(p);
donatien	0:632c9925f013	1588
donatien	0:632c9925f013	1589	return q;
donatien	0:632c9925f013	1590	}
donatien	0:632c9925f013	1591
donatien	0:632c9925f013	1592	struct pppInputHeader {
donatien	0:632c9925f013	1593	int unit;
donatien	0:632c9925f013	1594	u16_t proto;
donatien	0:632c9925f013	1595	};
donatien	0:632c9925f013	1596
donatien	0:632c9925f013	1597	/*
donatien	0:632c9925f013	1598	* Pass the processed input packet to the appropriate handler.
donatien	0:632c9925f013	1599	* This function and all handlers run in the context of the tcpip_thread
donatien	0:632c9925f013	1600	*/
donatien	0:632c9925f013	1601	static void
donatien	0:632c9925f013	1602	pppInput(void *arg)
donatien	0:632c9925f013	1603	{
donatien	0:632c9925f013	1604	struct pbuf nb = (struct pbuf )arg;
donatien	0:632c9925f013	1605	u16_t protocol;
donatien	0:632c9925f013	1606	int pd;
donatien	0:632c9925f013	1607
donatien	0:632c9925f013	1608	pd = ((struct pppInputHeader *)nb->payload)->unit;
donatien	0:632c9925f013	1609	protocol = ((struct pppInputHeader *)nb->payload)->proto;
donatien	0:632c9925f013	1610
donatien	0:632c9925f013	1611	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
donatien	0:632c9925f013	1612	LWIP_ASSERT("pbuf_header failed\n", 0);
donatien	0:632c9925f013	1613	goto drop;
donatien	0:632c9925f013	1614	}
donatien	0:632c9925f013	1615
donatien	0:632c9925f013	1616	LINK_STATS_INC(link.recv);
donatien	0:632c9925f013	1617	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
donatien	0:632c9925f013	1618	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
donatien	0:632c9925f013	1619
donatien	0:632c9925f013	1620	/*
donatien	0:632c9925f013	1621	* Toss all non-LCP packets unless LCP is OPEN.
donatien	0:632c9925f013	1622	* Until we get past the authentication phase, toss all packets
donatien	0:632c9925f013	1623	* except LCP, LQR and authentication packets.
donatien	0:632c9925f013	1624	*/
donatien	0:632c9925f013	1625	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
donatien	0:632c9925f013	1626	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
donatien	0:632c9925f013	1627	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
donatien	0:632c9925f013	1628	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
donatien	0:632c9925f013	1629	goto drop;
donatien	0:632c9925f013	1630	}
donatien	0:632c9925f013	1631	}
donatien	0:632c9925f013	1632
donatien	0:632c9925f013	1633	switch(protocol) {
donatien	0:632c9925f013	1634	case PPP_VJC_COMP: /* VJ compressed TCP */
donatien	0:632c9925f013	1635	#if PPPOS_SUPPORT && VJ_SUPPORT
donatien	0:632c9925f013	1636	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
donatien	0:632c9925f013	1637	/*
donatien	0:632c9925f013	1638	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
donatien	0:632c9925f013	1639	* pass the result to IP.
donatien	0:632c9925f013	1640	*/
donatien	0:632c9925f013	1641	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
donatien	0:632c9925f013	1642	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
donatien	0:632c9925f013	1643	return;
donatien	0:632c9925f013	1644	}
donatien	0:632c9925f013	1645	/* Something's wrong so drop it. */
donatien	0:632c9925f013	1646	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
donatien	0:632c9925f013	1647	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:632c9925f013	1648	/* No handler for this protocol so drop the packet. */
donatien	0:632c9925f013	1649	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
donatien	0:632c9925f013	1650	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:632c9925f013	1651	break;
donatien	0:632c9925f013	1652
donatien	0:632c9925f013	1653	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
donatien	0:632c9925f013	1654	#if PPPOS_SUPPORT && VJ_SUPPORT
donatien	0:632c9925f013	1655	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
donatien	0:632c9925f013	1656	/*
donatien	0:632c9925f013	1657	* Process the TCP/IP header for VJ header compression and then pass
donatien	0:632c9925f013	1658	* the packet to IP.
donatien	0:632c9925f013	1659	*/
donatien	0:632c9925f013	1660	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
donatien	0:632c9925f013	1661	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
donatien	0:632c9925f013	1662	return;
donatien	0:632c9925f013	1663	}
donatien	0:632c9925f013	1664	/* Something's wrong so drop it. */
donatien	0:632c9925f013	1665	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
donatien	0:632c9925f013	1666	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:632c9925f013	1667	/* No handler for this protocol so drop the packet. */
donatien	4:fd826cad83c0	1668	PPPDEBUG(LOG_INFO,
donatien	4:fd826cad83c0	1669	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
donatien	0:632c9925f013	1670	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
donatien	0:632c9925f013	1671	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
donatien	0:632c9925f013	1672	break;
donatien	0:632c9925f013	1673
donatien	0:632c9925f013	1674	case PPP_IP: /* Internet Protocol */
donatien	0:632c9925f013	1675	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
donatien	0:632c9925f013	1676	if (pppControl[pd].netif.input) {
donatien	0:632c9925f013	1677	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
donatien	0:632c9925f013	1678	return;
donatien	0:632c9925f013	1679	}
donatien	0:632c9925f013	1680	break;
donatien	0:632c9925f013	1681
donatien	0:632c9925f013	1682	default: {
donatien	0:632c9925f013	1683	struct protent *protp;
donatien	0:632c9925f013	1684	int i;
donatien	0:632c9925f013	1685
donatien	0:632c9925f013	1686	/*
donatien	0:632c9925f013	1687	* Upcall the proper protocol input routine.
donatien	0:632c9925f013	1688	*/
donatien	0:632c9925f013	1689	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
donatien	0:632c9925f013	1690	if (protp->protocol == protocol && protp->enabled_flag) {
donatien	0:632c9925f013	1691	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
donatien	0:632c9925f013	1692	nb = pppSingleBuf(nb);
donatien	5:dd63a1e02b1b	1693	(protp->input)(pd, (u_char )nb->payload, nb->len);
donatien	0:632c9925f013	1694	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
donatien	0:632c9925f013	1695	goto out;
donatien	0:632c9925f013	1696	}
donatien	0:632c9925f013	1697	}
donatien	0:632c9925f013	1698
donatien	0:632c9925f013	1699	/* No handler for this protocol so reject the packet. */
donatien	0:632c9925f013	1700	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
donatien	0:632c9925f013	1701	if (pbuf_header(nb, sizeof(protocol))) {
donatien	0:632c9925f013	1702	LWIP_ASSERT("pbuf_header failed\n", 0);
donatien	0:632c9925f013	1703	goto drop;
donatien	0:632c9925f013	1704	}
donatien	0:632c9925f013	1705	#if BYTE_ORDER == LITTLE_ENDIAN
donatien	0:632c9925f013	1706	protocol = htons(protocol);
donatien	0:632c9925f013	1707	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
donatien	0:632c9925f013	1708	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
donatien	5:dd63a1e02b1b	1709	lcp_sprotrej(pd, (u_char *)nb->payload, nb->len);
donatien	0:632c9925f013	1710	}
donatien	0:632c9925f013	1711	break;
donatien	0:632c9925f013	1712	}
donatien	0:632c9925f013	1713
donatien	0:632c9925f013	1714	drop:
donatien	0:632c9925f013	1715	LINK_STATS_INC(link.drop);
donatien	0:632c9925f013	1716	snmp_inc_ifindiscards(&pppControl[pd].netif);
donatien	0:632c9925f013	1717
donatien	0:632c9925f013	1718	out:
donatien	0:632c9925f013	1719	pbuf_free(nb);
donatien	0:632c9925f013	1720	return;
donatien	0:632c9925f013	1721	}
donatien	0:632c9925f013	1722
donatien	0:632c9925f013	1723	#if PPPOS_SUPPORT
donatien	0:632c9925f013	1724	/*
donatien	0:632c9925f013	1725	* Drop the input packet.
donatien	0:632c9925f013	1726	*/
donatien	0:632c9925f013	1727	static void
donatien	0:632c9925f013	1728	pppDrop(PPPControlRx *pcrx)
donatien	0:632c9925f013	1729	{
donatien	0:632c9925f013	1730	if (pcrx->inHead != NULL) {
donatien	0:632c9925f013	1731	#if 0
donatien	0:632c9925f013	1732	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
donatien	0:632c9925f013	1733	#endif
donatien	0:632c9925f013	1734	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
donatien	0:632c9925f013	1735	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
donatien	0:632c9925f013	1736	pbuf_free(pcrx->inTail);
donatien	0:632c9925f013	1737	}
donatien	0:632c9925f013	1738	pbuf_free(pcrx->inHead);
donatien	0:632c9925f013	1739	pcrx->inHead = NULL;
donatien	0:632c9925f013	1740	pcrx->inTail = NULL;
donatien	0:632c9925f013	1741	}
donatien	0:632c9925f013	1742	#if VJ_SUPPORT
donatien	0:632c9925f013	1743	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
donatien	0:632c9925f013	1744	#endif /* VJ_SUPPORT */
donatien	0:632c9925f013	1745
donatien	0:632c9925f013	1746	LINK_STATS_INC(link.drop);
donatien	0:632c9925f013	1747	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
donatien	0:632c9925f013	1748	}
donatien	0:632c9925f013	1749
donatien	0:632c9925f013	1750	/** Pass received raw characters to PPPoS to be decoded. This function is
donatien	0:632c9925f013	1751	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
donatien	0:632c9925f013	1752	*
donatien	0:632c9925f013	1753	* @param pd PPP descriptor index, returned by pppOpen()
donatien	0:632c9925f013	1754	* @param data received data
donatien	0:632c9925f013	1755	* @param len length of received data
donatien	0:632c9925f013	1756	*/
donatien	0:632c9925f013	1757	void
donatien	0:632c9925f013	1758	pppos_input(int pd, u_char* data, int len)
donatien	0:632c9925f013	1759	{
donatien	0:632c9925f013	1760	pppInProc(&pppControl[pd].rx, data, len);
donatien	0:632c9925f013	1761	}
donatien	0:632c9925f013	1762
donatien	0:632c9925f013	1763	/**
donatien	0:632c9925f013	1764	* Process a received octet string.
donatien	0:632c9925f013	1765	*/
donatien	0:632c9925f013	1766	static void
donatien	0:632c9925f013	1767	pppInProc(PPPControlRx pcrx, u_char s, int l)
donatien	0:632c9925f013	1768	{
donatien	0:632c9925f013	1769	struct pbuf *nextNBuf;
donatien	0:632c9925f013	1770	u_char curChar;
donatien	0:632c9925f013	1771	u_char escaped;
donatien	0:632c9925f013	1772	SYS_ARCH_DECL_PROTECT(lev);
donatien	0:632c9925f013	1773
donatien	0:632c9925f013	1774	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
donatien	0:632c9925f013	1775	while (l-- > 0) {
donatien	0:632c9925f013	1776	curChar = *s++;
donatien	0:632c9925f013	1777
donatien	0:632c9925f013	1778	SYS_ARCH_PROTECT(lev);
donatien	0:632c9925f013	1779	escaped = ESCAPE_P(pcrx->inACCM, curChar);
donatien	0:632c9925f013	1780	SYS_ARCH_UNPROTECT(lev);
donatien	0:632c9925f013	1781	/* Handle special characters. */
donatien	0:632c9925f013	1782	if (escaped) {
donatien	0:632c9925f013	1783	/* Check for escape sequences. */
donatien	0:632c9925f013	1784	/* XXX Note that this does not handle an escaped 0x5d character which
donatien	0:632c9925f013	1785	* would appear as an escape character. Since this is an ASCII ']'
donatien	0:632c9925f013	1786	* and there is no reason that I know of to escape it, I won't complicate
donatien	0:632c9925f013	1787	* the code to handle this case. GLL */
donatien	0:632c9925f013	1788	if (curChar == PPP_ESCAPE) {
donatien	0:632c9925f013	1789	pcrx->inEscaped = 1;
donatien	0:632c9925f013	1790	/* Check for the flag character. */
donatien	0:632c9925f013	1791	} else if (curChar == PPP_FLAG) {
donatien	0:632c9925f013	1792	/* If this is just an extra flag character, ignore it. */
donatien	0:632c9925f013	1793	if (pcrx->inState <= PDADDRESS) {
donatien	0:632c9925f013	1794	/* ignore it */;
donatien	0:632c9925f013	1795	/* If we haven't received the packet header, drop what has come in. */
donatien	0:632c9925f013	1796	} else if (pcrx->inState < PDDATA) {
donatien	0:632c9925f013	1797	PPPDEBUG(LOG_WARNING,
donatien	0:632c9925f013	1798	("pppInProc[%d]: Dropping incomplete packet %d\n",
donatien	0:632c9925f013	1799	pcrx->pd, pcrx->inState));
donatien	0:632c9925f013	1800	LINK_STATS_INC(link.lenerr);
donatien	0:632c9925f013	1801	pppDrop(pcrx);
donatien	0:632c9925f013	1802	/* If the fcs is invalid, drop the packet. */
donatien	0:632c9925f013	1803	} else if (pcrx->inFCS != PPP_GOODFCS) {
donatien	0:632c9925f013	1804	PPPDEBUG(LOG_INFO,
donatien	0:632c9925f013	1805	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
donatien	0:632c9925f013	1806	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
donatien	0:632c9925f013	1807	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
donatien	0:632c9925f013	1808	LINK_STATS_INC(link.chkerr);
donatien	0:632c9925f013	1809	pppDrop(pcrx);
donatien	0:632c9925f013	1810	/* Otherwise it's a good packet so pass it on. */
donatien	0:632c9925f013	1811	} else {
donatien	0:632c9925f013	1812	/* Trim off the checksum. */
donatien	0:632c9925f013	1813	if(pcrx->inTail->len >= 2) {
donatien	0:632c9925f013	1814	pcrx->inTail->len -= 2;
donatien	0:632c9925f013	1815
donatien	0:632c9925f013	1816	pcrx->inTail->tot_len = pcrx->inTail->len;
donatien	0:632c9925f013	1817	if (pcrx->inTail != pcrx->inHead) {
donatien	0:632c9925f013	1818	pbuf_cat(pcrx->inHead, pcrx->inTail);
donatien	0:632c9925f013	1819	}
donatien	0:632c9925f013	1820	} else {
donatien	0:632c9925f013	1821	pcrx->inTail->tot_len = pcrx->inTail->len;
donatien	0:632c9925f013	1822	if (pcrx->inTail != pcrx->inHead) {
donatien	0:632c9925f013	1823	pbuf_cat(pcrx->inHead, pcrx->inTail);
donatien	0:632c9925f013	1824	}
donatien	0:632c9925f013	1825
donatien	0:632c9925f013	1826	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
donatien	0:632c9925f013	1827	}
donatien	0:632c9925f013	1828
donatien	0:632c9925f013	1829	/* Dispatch the packet thereby consuming it. */
donatien	0:632c9925f013	1830	#if PPP_INPROC_MULTITHREADED
donatien	0:632c9925f013	1831	if(tcpip_callback_with_block(pppInput, pcrx->inHead, 0) != ERR_OK) {
donatien	0:632c9925f013	1832	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
donatien	0:632c9925f013	1833	pbuf_free(pcrx->inHead);
donatien	0:632c9925f013	1834	LINK_STATS_INC(link.drop);
donatien	0:632c9925f013	1835	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
donatien	0:632c9925f013	1836	}
donatien	0:632c9925f013	1837	#else /* PPP_INPROC_MULTITHREADED */
donatien	0:632c9925f013	1838	pppInput(pcrx->inHead);
donatien	0:632c9925f013	1839	#endif /* PPP_INPROC_MULTITHREADED */
donatien	0:632c9925f013	1840	pcrx->inHead = NULL;
donatien	0:632c9925f013	1841	pcrx->inTail = NULL;
donatien	0:632c9925f013	1842	}
donatien	0:632c9925f013	1843
donatien	0:632c9925f013	1844	/* Prepare for a new packet. */
donatien	0:632c9925f013	1845	pcrx->inFCS = PPP_INITFCS;
donatien	0:632c9925f013	1846	pcrx->inState = PDADDRESS;
donatien	0:632c9925f013	1847	pcrx->inEscaped = 0;
donatien	0:632c9925f013	1848	/* Other characters are usually control characters that may have
donatien	0:632c9925f013	1849	* been inserted by the physical layer so here we just drop them. */
donatien	0:632c9925f013	1850	} else {
donatien	0:632c9925f013	1851	PPPDEBUG(LOG_WARNING,
donatien	0:632c9925f013	1852	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
donatien	0:632c9925f013	1853	}
donatien	0:632c9925f013	1854	/* Process other characters. */
donatien	0:632c9925f013	1855	} else {
donatien	0:632c9925f013	1856	/* Unencode escaped characters. */
donatien	0:632c9925f013	1857	if (pcrx->inEscaped) {
donatien	0:632c9925f013	1858	pcrx->inEscaped = 0;
donatien	0:632c9925f013	1859	curChar ^= PPP_TRANS;
donatien	0:632c9925f013	1860	}
donatien	0:632c9925f013	1861
donatien	0:632c9925f013	1862	/* Process character relative to current state. */
donatien	0:632c9925f013	1863	switch(pcrx->inState) {
donatien	0:632c9925f013	1864	case PDIDLE: /* Idle state - waiting. */
donatien	0:632c9925f013	1865	/* Drop the character if it's not 0xff
donatien	0:632c9925f013	1866	* we would have processed a flag character above. */
donatien	0:632c9925f013	1867	if (curChar != PPP_ALLSTATIONS) {
donatien	0:632c9925f013	1868	break;
donatien	0:632c9925f013	1869	}
donatien	0:632c9925f013	1870
donatien	0:632c9925f013	1871	/* Fall through */
donatien	0:632c9925f013	1872	case PDSTART: /* Process start flag. */
donatien	0:632c9925f013	1873	/* Prepare for a new packet. */
donatien	0:632c9925f013	1874	pcrx->inFCS = PPP_INITFCS;
donatien	0:632c9925f013	1875
donatien	0:632c9925f013	1876	/* Fall through */
donatien	0:632c9925f013	1877	case PDADDRESS: /* Process address field. */
donatien	0:632c9925f013	1878	if (curChar == PPP_ALLSTATIONS) {
donatien	0:632c9925f013	1879	pcrx->inState = PDCONTROL;
donatien	0:632c9925f013	1880	break;
donatien	0:632c9925f013	1881	}
donatien	0:632c9925f013	1882	/* Else assume compressed address and control fields so
donatien	0:632c9925f013	1883	* fall through to get the protocol... */
donatien	0:632c9925f013	1884	case PDCONTROL: /* Process control field. */
donatien	0:632c9925f013	1885	/* If we don't get a valid control code, restart. */
donatien	0:632c9925f013	1886	if (curChar == PPP_UI) {
donatien	0:632c9925f013	1887	pcrx->inState = PDPROTOCOL1;
donatien	0:632c9925f013	1888	break;
donatien	0:632c9925f013	1889	}
donatien	0:632c9925f013	1890	#if 0
donatien	0:632c9925f013	1891	else {
donatien	4:fd826cad83c0	1892	PPPDEBUG(LOG_WARNING,
donatien	4:fd826cad83c0	1893	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
donatien	4:fd826cad83c0	1894	pcrx->inState = PDSTART;
donatien	0:632c9925f013	1895	}
donatien	0:632c9925f013	1896	#endif
donatien	0:632c9925f013	1897	case PDPROTOCOL1: /* Process protocol field 1. */
donatien	0:632c9925f013	1898	/* If the lower bit is set, this is the end of the protocol
donatien	0:632c9925f013	1899	* field. */
donatien	0:632c9925f013	1900	if (curChar & 1) {
donatien	0:632c9925f013	1901	pcrx->inProtocol = curChar;
donatien	0:632c9925f013	1902	pcrx->inState = PDDATA;
donatien	0:632c9925f013	1903	} else {
donatien	0:632c9925f013	1904	pcrx->inProtocol = (u_int)curChar << 8;
donatien	0:632c9925f013	1905	pcrx->inState = PDPROTOCOL2;
donatien	0:632c9925f013	1906	}
donatien	0:632c9925f013	1907	break;
donatien	0:632c9925f013	1908	case PDPROTOCOL2: /* Process protocol field 2. */
donatien	0:632c9925f013	1909	pcrx->inProtocol \|= curChar;
donatien	0:632c9925f013	1910	pcrx->inState = PDDATA;
donatien	0:632c9925f013	1911	break;
donatien	0:632c9925f013	1912	case PDDATA: /* Process data byte. */
donatien	0:632c9925f013	1913	/* Make space to receive processed data. */
donatien	0:632c9925f013	1914	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
donatien	0:632c9925f013	1915	if(pcrx->inTail) {
donatien	0:632c9925f013	1916	pcrx->inTail->tot_len = pcrx->inTail->len;
donatien	0:632c9925f013	1917	if (pcrx->inTail != pcrx->inHead) {
donatien	0:632c9925f013	1918	pbuf_cat(pcrx->inHead, pcrx->inTail);
donatien	0:632c9925f013	1919	}
donatien	0:632c9925f013	1920	}
donatien	0:632c9925f013	1921	/* If we haven't started a packet, we need a packet header. */
donatien	0:632c9925f013	1922	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
donatien	0:632c9925f013	1923	if (nextNBuf == NULL) {
donatien	0:632c9925f013	1924	/* No free buffers. Drop the input packet and let the
donatien	0:632c9925f013	1925	* higher layers deal with it. Continue processing
donatien	0:632c9925f013	1926	* the received pbuf chain in case a new packet starts. */
donatien	0:632c9925f013	1927	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
donatien	0:632c9925f013	1928	LINK_STATS_INC(link.memerr);
donatien	0:632c9925f013	1929	pppDrop(pcrx);
donatien	0:632c9925f013	1930	pcrx->inState = PDSTART; /* Wait for flag sequence. */
donatien	0:632c9925f013	1931	break;
donatien	0:632c9925f013	1932	}
donatien	0:632c9925f013	1933	if (pcrx->inHead == NULL) {
donatien	4:fd826cad83c0	1934	struct pppInputHeader pih = (struct pppInputHeader )nextNBuf->payload;
donatien	0:632c9925f013	1935
donatien	0:632c9925f013	1936	pih->unit = pcrx->pd;
donatien	0:632c9925f013	1937	pih->proto = pcrx->inProtocol;
donatien	0:632c9925f013	1938
donatien	0:632c9925f013	1939	nextNBuf->len += sizeof(*pih);
donatien	0:632c9925f013	1940
donatien	0:632c9925f013	1941	pcrx->inHead = nextNBuf;
donatien	0:632c9925f013	1942	}
donatien	0:632c9925f013	1943	pcrx->inTail = nextNBuf;
donatien	0:632c9925f013	1944	}
donatien	0:632c9925f013	1945	/* Load character into buffer. */
donatien	0:632c9925f013	1946	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
donatien	0:632c9925f013	1947	break;
donatien	0:632c9925f013	1948	}
donatien	0:632c9925f013	1949
donatien	0:632c9925f013	1950	/* update the frame check sequence number. */
donatien	0:632c9925f013	1951	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
donatien	0:632c9925f013	1952	}
donatien	0:632c9925f013	1953	} /* while (l-- > 0), all bytes processed */
donatien	0:632c9925f013	1954
donatien	0:632c9925f013	1955	avRandomize();
donatien	0:632c9925f013	1956	}
donatien	0:632c9925f013	1957	#endif /* PPPOS_SUPPORT */
donatien	0:632c9925f013	1958
donatien	0:632c9925f013	1959	#if PPPOE_SUPPORT
donatien	0:632c9925f013	1960	void
donatien	0:632c9925f013	1961	pppInProcOverEthernet(int pd, struct pbuf *pb)
donatien	0:632c9925f013	1962	{
donatien	0:632c9925f013	1963	struct pppInputHeader *pih;
donatien	0:632c9925f013	1964	u16_t inProtocol;
donatien	0:632c9925f013	1965
donatien	0:632c9925f013	1966	if(pb->len < sizeof(inProtocol)) {
donatien	0:632c9925f013	1967	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
donatien	0:632c9925f013	1968	goto drop;
donatien	0:632c9925f013	1969	}
donatien	0:632c9925f013	1970
donatien	0:632c9925f013	1971	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
donatien	0:632c9925f013	1972
donatien	0:632c9925f013	1973	/* make room for pppInputHeader - should not fail */
donatien	0:632c9925f013	1974	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
donatien	0:632c9925f013	1975	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
donatien	0:632c9925f013	1976	goto drop;
donatien	0:632c9925f013	1977	}
donatien	0:632c9925f013	1978
donatien	0:632c9925f013	1979	pih = pb->payload;
donatien	0:632c9925f013	1980
donatien	0:632c9925f013	1981	pih->unit = pd;
donatien	0:632c9925f013	1982	pih->proto = inProtocol;
donatien	0:632c9925f013	1983
donatien	0:632c9925f013	1984	/* Dispatch the packet thereby consuming it. */
donatien	0:632c9925f013	1985	pppInput(pb);
donatien	0:632c9925f013	1986	return;
donatien	0:632c9925f013	1987
donatien	0:632c9925f013	1988	drop:
donatien	0:632c9925f013	1989	LINK_STATS_INC(link.drop);
donatien	0:632c9925f013	1990	snmp_inc_ifindiscards(&pppControl[pd].netif);
donatien	0:632c9925f013	1991	pbuf_free(pb);
donatien	0:632c9925f013	1992	return;
donatien	0:632c9925f013	1993	}
donatien	0:632c9925f013	1994	#endif /* PPPOE_SUPPORT */
donatien	0:632c9925f013	1995
donatien	0:632c9925f013	1996	#if LWIP_NETIF_STATUS_CALLBACK
donatien	0:632c9925f013	1997	/** Set the status callback of a PPP's netif
donatien	0:632c9925f013	1998	*
donatien	0:632c9925f013	1999	* @param pd The PPP descriptor returned by pppOpen()
donatien	0:632c9925f013	2000	* @param status_callback pointer to the status callback function
donatien	0:632c9925f013	2001	*
donatien	0:632c9925f013	2002	* @see netif_set_status_callback
donatien	0:632c9925f013	2003	*/
donatien	0:632c9925f013	2004	void
donatien	0:632c9925f013	2005	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
donatien	0:632c9925f013	2006	{
donatien	0:632c9925f013	2007	netif_set_status_callback(&pppControl[pd].netif, status_callback);
donatien	0:632c9925f013	2008	}
donatien	0:632c9925f013	2009	#endif /* LWIP_NETIF_STATUS_CALLBACK */
donatien	0:632c9925f013	2010
donatien	0:632c9925f013	2011	#if LWIP_NETIF_LINK_CALLBACK
donatien	0:632c9925f013	2012	/** Set the link callback of a PPP's netif
donatien	0:632c9925f013	2013	*
donatien	0:632c9925f013	2014	* @param pd The PPP descriptor returned by pppOpen()
donatien	0:632c9925f013	2015	* @param link_callback pointer to the link callback function
donatien	0:632c9925f013	2016	*
donatien	0:632c9925f013	2017	* @see netif_set_link_callback
donatien	0:632c9925f013	2018	*/
donatien	0:632c9925f013	2019	void
donatien	0:632c9925f013	2020	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
donatien	0:632c9925f013	2021	{
donatien	0:632c9925f013	2022	netif_set_link_callback(&pppControl[pd].netif, link_callback);
donatien	0:632c9925f013	2023	}
donatien	0:632c9925f013	2024	#endif /* LWIP_NETIF_LINK_CALLBACK */
donatien	0:632c9925f013	2025
donatien	0:632c9925f013	2026	#endif /* PPP_SUPPORT */

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Type:	Program
Created:	11 Jun 2010
Imports:	2654
Forks:	0
Commits:	12
Dependents:	3
Dependencies:	0
Followers:	13

This repository is Public (Unlisted).

lwip/netif/ppp/ppp.c@5:dd63a1e02b1b, 2010-07-27 (annotated)

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