NetServicesProxy - A modified version of http://mbed.org/users/segun…

Users » mimil » Code » NetServicesProxy

A modified version of http://mbed.org/users/segundo/libraries/NetServices/ljhqix to add HTTP proxy feature (based on http://mbed.org/users/igorsk/programs/NetServicesSource/ltjpag)

Dependents: SenseClient

lwip/netif/ppp/ppp.c@0:308f83189a3f, 2011-09-06 (annotated)

Committer:: mimil
Date:: Tue Sep 06 13:26:45 2011 +0000
Revision:: 0:308f83189a3f

Who changed what in which revision?

User	Revision	Line number	New contents of line
mimil	0:308f83189a3f	1	/*****************************************************************************
mimil	0:308f83189a3f	2	* ppp.c - Network Point to Point Protocol program file.
mimil	0:308f83189a3f	3	*
mimil	0:308f83189a3f	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
mimil	0:308f83189a3f	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
mimil	0:308f83189a3f	6	*
mimil	0:308f83189a3f	7	* The authors hereby grant permission to use, copy, modify, distribute,
mimil	0:308f83189a3f	8	* and license this software and its documentation for any purpose, provided
mimil	0:308f83189a3f	9	* that existing copyright notices are retained in all copies and that this
mimil	0:308f83189a3f	10	* notice and the following disclaimer are included verbatim in any
mimil	0:308f83189a3f	11	* distributions. No written agreement, license, or royalty fee is required
mimil	0:308f83189a3f	12	* for any of the authorized uses.
mimil	0:308f83189a3f	13	*
mimil	0:308f83189a3f	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
mimil	0:308f83189a3f	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
mimil	0:308f83189a3f	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
mimil	0:308f83189a3f	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
mimil	0:308f83189a3f	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
mimil	0:308f83189a3f	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
mimil	0:308f83189a3f	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
mimil	0:308f83189a3f	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
mimil	0:308f83189a3f	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
mimil	0:308f83189a3f	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mimil	0:308f83189a3f	24	*
mimil	0:308f83189a3f	25	******************************************************************************
mimil	0:308f83189a3f	26	* REVISION HISTORY
mimil	0:308f83189a3f	27	*
mimil	0:308f83189a3f	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
mimil	0:308f83189a3f	29	* Ported to lwIP.
mimil	0:308f83189a3f	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
mimil	0:308f83189a3f	31	* Original.
mimil	0:308f83189a3f	32	*****************************************************************************/
mimil	0:308f83189a3f	33
mimil	0:308f83189a3f	34	/*
mimil	0:308f83189a3f	35	* ppp_defs.h - PPP definitions.
mimil	0:308f83189a3f	36	*
mimil	0:308f83189a3f	37	* if_pppvar.h - private structures and declarations for PPP.
mimil	0:308f83189a3f	38	*
mimil	0:308f83189a3f	39	* Copyright (c) 1994 The Australian National University.
mimil	0:308f83189a3f	40	* All rights reserved.
mimil	0:308f83189a3f	41	*
mimil	0:308f83189a3f	42	* Permission to use, copy, modify, and distribute this software and its
mimil	0:308f83189a3f	43	* documentation is hereby granted, provided that the above copyright
mimil	0:308f83189a3f	44	* notice appears in all copies. This software is provided without any
mimil	0:308f83189a3f	45	* warranty, express or implied. The Australian National University
mimil	0:308f83189a3f	46	* makes no representations about the suitability of this software for
mimil	0:308f83189a3f	47	* any purpose.
mimil	0:308f83189a3f	48	*
mimil	0:308f83189a3f	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
mimil	0:308f83189a3f	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
mimil	0:308f83189a3f	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
mimil	0:308f83189a3f	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
mimil	0:308f83189a3f	53	* OF SUCH DAMAGE.
mimil	0:308f83189a3f	54	*
mimil	0:308f83189a3f	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
mimil	0:308f83189a3f	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
mimil	0:308f83189a3f	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
mimil	0:308f83189a3f	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
mimil	0:308f83189a3f	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
mimil	0:308f83189a3f	60	* OR MODIFICATIONS.
mimil	0:308f83189a3f	61	*/
mimil	0:308f83189a3f	62
mimil	0:308f83189a3f	63	/*
mimil	0:308f83189a3f	64	* if_ppp.h - Point-to-Point Protocol definitions.
mimil	0:308f83189a3f	65	*
mimil	0:308f83189a3f	66	* Copyright (c) 1989 Carnegie Mellon University.
mimil	0:308f83189a3f	67	* All rights reserved.
mimil	0:308f83189a3f	68	*
mimil	0:308f83189a3f	69	* Redistribution and use in source and binary forms are permitted
mimil	0:308f83189a3f	70	* provided that the above copyright notice and this paragraph are
mimil	0:308f83189a3f	71	* duplicated in all such forms and that any documentation,
mimil	0:308f83189a3f	72	* advertising materials, and other materials related to such
mimil	0:308f83189a3f	73	* distribution and use acknowledge that the software was developed
mimil	0:308f83189a3f	74	* by Carnegie Mellon University. The name of the
mimil	0:308f83189a3f	75	* University may not be used to endorse or promote products derived
mimil	0:308f83189a3f	76	* from this software without specific prior written permission.
mimil	0:308f83189a3f	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
mimil	0:308f83189a3f	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
mimil	0:308f83189a3f	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
mimil	0:308f83189a3f	80	*/
mimil	0:308f83189a3f	81
mimil	0:308f83189a3f	82	#include "lwip/opt.h"
mimil	0:308f83189a3f	83
mimil	0:308f83189a3f	84	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
mimil	0:308f83189a3f	85
mimil	0:308f83189a3f	86	#include "lwip/ip.h" /* for ip_input() */
mimil	0:308f83189a3f	87
mimil	0:308f83189a3f	88	#include "ppp.h"
mimil	0:308f83189a3f	89	#include "pppdebug.h"
mimil	0:308f83189a3f	90
mimil	0:308f83189a3f	91	#include "randm.h"
mimil	0:308f83189a3f	92	#include "fsm.h"
mimil	0:308f83189a3f	93	#if PAP_SUPPORT
mimil	0:308f83189a3f	94	#include "pap.h"
mimil	0:308f83189a3f	95	#endif /* PAP_SUPPORT */
mimil	0:308f83189a3f	96	#if CHAP_SUPPORT
mimil	0:308f83189a3f	97	#include "chap.h"
mimil	0:308f83189a3f	98	#endif /* CHAP_SUPPORT */
mimil	0:308f83189a3f	99	#include "ipcp.h"
mimil	0:308f83189a3f	100	#include "lcp.h"
mimil	0:308f83189a3f	101	#include "magic.h"
mimil	0:308f83189a3f	102	#include "auth.h"
mimil	0:308f83189a3f	103	#if VJ_SUPPORT
mimil	0:308f83189a3f	104	#include "vj.h"
mimil	0:308f83189a3f	105	#endif /* VJ_SUPPORT */
mimil	0:308f83189a3f	106	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	107	#include "netif/ppp_oe.h"
mimil	0:308f83189a3f	108	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	109
mimil	0:308f83189a3f	110	#include "lwip/tcpip.h"
mimil	0:308f83189a3f	111	#include "lwip/api.h"
mimil	0:308f83189a3f	112	#include "lwip/snmp.h"
mimil	0:308f83189a3f	113
mimil	0:308f83189a3f	114	#include <string.h>
mimil	0:308f83189a3f	115
mimil	0:308f83189a3f	116	/*************************/
mimil	0:308f83189a3f	117	/* LOCAL DEFINITIONS */
mimil	0:308f83189a3f	118	/*************************/
mimil	0:308f83189a3f	119
mimil	0:308f83189a3f	120	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
mimil	0:308f83189a3f	121	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
mimil	0:308f83189a3f	122	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
mimil	0:308f83189a3f	123	*/
mimil	0:308f83189a3f	124	#ifndef PPP_INPROC_MULTITHREADED
mimil	0:308f83189a3f	125	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
mimil	0:308f83189a3f	126	#endif
mimil	0:308f83189a3f	127
mimil	0:308f83189a3f	128	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
mimil	0:308f83189a3f	129	* Default is 0: call pppos_input() for received raw characters, charcater
mimil	0:308f83189a3f	130	* reception is up to the port */
mimil	0:308f83189a3f	131	#ifndef PPP_INPROC_OWNTHREAD
mimil	0:308f83189a3f	132	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
mimil	0:308f83189a3f	133	#endif
mimil	0:308f83189a3f	134
mimil	0:308f83189a3f	135	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
mimil	0:308f83189a3f	136	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
mimil	0:308f83189a3f	137	#endif
mimil	0:308f83189a3f	138
mimil	0:308f83189a3f	139	/*
mimil	0:308f83189a3f	140	* The basic PPP frame.
mimil	0:308f83189a3f	141	*/
mimil	0:308f83189a3f	142	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
mimil	0:308f83189a3f	143	#define PPP_CONTROL(p) (((u_char *)(p))[1])
mimil	0:308f83189a3f	144	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
mimil	0:308f83189a3f	145
mimil	0:308f83189a3f	146	/* PPP packet parser states. Current state indicates operation yet to be
mimil	0:308f83189a3f	147	* completed. */
mimil	0:308f83189a3f	148	typedef enum {
mimil	0:308f83189a3f	149	PDIDLE = 0, /* Idle state - waiting. */
mimil	0:308f83189a3f	150	PDSTART, /* Process start flag. */
mimil	0:308f83189a3f	151	PDADDRESS, /* Process address field. */
mimil	0:308f83189a3f	152	PDCONTROL, /* Process control field. */
mimil	0:308f83189a3f	153	PDPROTOCOL1, /* Process protocol field 1. */
mimil	0:308f83189a3f	154	PDPROTOCOL2, /* Process protocol field 2. */
mimil	0:308f83189a3f	155	PDDATA /* Process data byte. */
mimil	0:308f83189a3f	156	} PPPDevStates;
mimil	0:308f83189a3f	157
mimil	0:308f83189a3f	158	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
mimil	0:308f83189a3f	159
mimil	0:308f83189a3f	160	/************************/
mimil	0:308f83189a3f	161	/* LOCAL DATA TYPES */
mimil	0:308f83189a3f	162	/************************/
mimil	0:308f83189a3f	163
mimil	0:308f83189a3f	164	/** RX buffer size: this may be configured smaller! */
mimil	0:308f83189a3f	165	#ifndef PPPOS_RX_BUFSIZE
mimil	0:308f83189a3f	166	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
mimil	0:308f83189a3f	167	#endif
mimil	0:308f83189a3f	168
mimil	0:308f83189a3f	169	typedef struct PPPControlRx_s {
mimil	0:308f83189a3f	170	/** unit number / ppp descriptor */
mimil	0:308f83189a3f	171	int pd;
mimil	0:308f83189a3f	172	/** the rx file descriptor */
mimil	0:308f83189a3f	173	sio_fd_t fd;
mimil	0:308f83189a3f	174	/** receive buffer - encoded data is stored here */
mimil	0:308f83189a3f	175	u_char rxbuf[PPPOS_RX_BUFSIZE];
mimil	0:308f83189a3f	176
mimil	0:308f83189a3f	177	/* The input packet. */
mimil	0:308f83189a3f	178	struct pbuf inHead, inTail;
mimil	0:308f83189a3f	179
mimil	0:308f83189a3f	180	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	181	u16_t inProtocol; /* The input protocol code. */
mimil	0:308f83189a3f	182	u16_t inFCS; /* Input Frame Check Sequence value. */
mimil	0:308f83189a3f	183	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	184	PPPDevStates inState; /* The input process state. */
mimil	0:308f83189a3f	185	char inEscaped; /* Escape next character. */
mimil	0:308f83189a3f	186	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
mimil	0:308f83189a3f	187	} PPPControlRx;
mimil	0:308f83189a3f	188
mimil	0:308f83189a3f	189	/*
mimil	0:308f83189a3f	190	* PPP interface control block.
mimil	0:308f83189a3f	191	*/
mimil	0:308f83189a3f	192	typedef struct PPPControl_s {
mimil	0:308f83189a3f	193	PPPControlRx rx;
mimil	0:308f83189a3f	194	char openFlag; /* True when in use. */
mimil	0:308f83189a3f	195	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	196	struct netif *ethif;
mimil	0:308f83189a3f	197	struct pppoe_softc *pppoe_sc;
mimil	0:308f83189a3f	198	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	199	int if_up; /* True when the interface is up. */
mimil	0:308f83189a3f	200	int errCode; /* Code indicating why interface is down. */
mimil	0:308f83189a3f	201	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	202	sio_fd_t fd; /* File device ID of port. */
mimil	0:308f83189a3f	203	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	204	u16_t mtu; /* Peer's mru */
mimil	0:308f83189a3f	205	int pcomp; /* Does peer accept protocol compression? */
mimil	0:308f83189a3f	206	int accomp; /* Does peer accept addr/ctl compression? */
mimil	0:308f83189a3f	207	u_long lastXMit; /* Time of last transmission. */
mimil	0:308f83189a3f	208	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
mimil	0:308f83189a3f	209	#if PPPOS_SUPPORT && VJ_SUPPORT
mimil	0:308f83189a3f	210	int vjEnabled; /* Flag indicating VJ compression enabled. */
mimil	0:308f83189a3f	211	struct vjcompress vjComp; /* Van Jacobson compression header. */
mimil	0:308f83189a3f	212	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
mimil	0:308f83189a3f	213
mimil	0:308f83189a3f	214	struct netif netif;
mimil	0:308f83189a3f	215
mimil	0:308f83189a3f	216	struct ppp_addrs addrs;
mimil	0:308f83189a3f	217
mimil	0:308f83189a3f	218	void (linkStatusCB)(void ctx, int errCode, void *arg);
mimil	0:308f83189a3f	219	void *linkStatusCtx;
mimil	0:308f83189a3f	220
mimil	0:308f83189a3f	221	} PPPControl;
mimil	0:308f83189a3f	222
mimil	0:308f83189a3f	223
mimil	0:308f83189a3f	224	/*
mimil	0:308f83189a3f	225	* Ioctl definitions.
mimil	0:308f83189a3f	226	*/
mimil	0:308f83189a3f	227
mimil	0:308f83189a3f	228	struct npioctl {
mimil	0:308f83189a3f	229	int protocol; /* PPP procotol, e.g. PPP_IP */
mimil	0:308f83189a3f	230	enum NPmode mode;
mimil	0:308f83189a3f	231	};
mimil	0:308f83189a3f	232
mimil	0:308f83189a3f	233
mimil	0:308f83189a3f	234
mimil	0:308f83189a3f	235	/***********************************/
mimil	0:308f83189a3f	236	/* LOCAL FUNCTION DECLARATIONS */
mimil	0:308f83189a3f	237	/***********************************/
mimil	0:308f83189a3f	238	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	239	#if PPP_INPROC_OWNTHREAD
mimil	0:308f83189a3f	240	static void pppInputThread(void *arg);
mimil	0:308f83189a3f	241	#endif /* PPP_INPROC_OWNTHREAD */
mimil	0:308f83189a3f	242	static void pppDrop(PPPControlRx *pcrx);
mimil	0:308f83189a3f	243	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
mimil	0:308f83189a3f	244	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	245
mimil	0:308f83189a3f	246
mimil	0:308f83189a3f	247	/******************************/
mimil	0:308f83189a3f	248	/* PUBLIC DATA STRUCTURES */
mimil	0:308f83189a3f	249	/******************************/
mimil	0:308f83189a3f	250	u_long subnetMask;
mimil	0:308f83189a3f	251
mimil	0:308f83189a3f	252	static PPPControl pppControl[NUM_PPP] MEM_POSITION; /* The PPP interface control blocks. */
mimil	0:308f83189a3f	253
mimil	0:308f83189a3f	254	/*
mimil	0:308f83189a3f	255	* PPP Data Link Layer "protocol" table.
mimil	0:308f83189a3f	256	* One entry per supported protocol.
mimil	0:308f83189a3f	257	* The last entry must be NULL.
mimil	0:308f83189a3f	258	*/
mimil	0:308f83189a3f	259	struct protent *ppp_protocols[] = {
mimil	0:308f83189a3f	260	&lcp_protent,
mimil	0:308f83189a3f	261	#if PAP_SUPPORT
mimil	0:308f83189a3f	262	&pap_protent,
mimil	0:308f83189a3f	263	#endif /* PAP_SUPPORT */
mimil	0:308f83189a3f	264	#if CHAP_SUPPORT
mimil	0:308f83189a3f	265	&chap_protent,
mimil	0:308f83189a3f	266	#endif /* CHAP_SUPPORT */
mimil	0:308f83189a3f	267	#if CBCP_SUPPORT
mimil	0:308f83189a3f	268	&cbcp_protent,
mimil	0:308f83189a3f	269	#endif /* CBCP_SUPPORT */
mimil	0:308f83189a3f	270	&ipcp_protent,
mimil	0:308f83189a3f	271	#if CCP_SUPPORT
mimil	0:308f83189a3f	272	&ccp_protent,
mimil	0:308f83189a3f	273	#endif /* CCP_SUPPORT */
mimil	0:308f83189a3f	274	NULL
mimil	0:308f83189a3f	275	};
mimil	0:308f83189a3f	276
mimil	0:308f83189a3f	277
mimil	0:308f83189a3f	278	/*
mimil	0:308f83189a3f	279	* Buffers for outgoing packets. This must be accessed only from the appropriate
mimil	0:308f83189a3f	280	* PPP task so that it doesn't need to be protected to avoid collisions.
mimil	0:308f83189a3f	281	*/
mimil	0:308f83189a3f	282	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] MEM_POSITION;
mimil	0:308f83189a3f	283
mimil	0:308f83189a3f	284
mimil	0:308f83189a3f	285	/*****************************/
mimil	0:308f83189a3f	286	/* LOCAL DATA STRUCTURES */
mimil	0:308f83189a3f	287	/*****************************/
mimil	0:308f83189a3f	288
mimil	0:308f83189a3f	289	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	290	/*
mimil	0:308f83189a3f	291	* FCS lookup table as calculated by genfcstab.
mimil	0:308f83189a3f	292	* @todo: smaller, slower implementation for lower memory footprint?
mimil	0:308f83189a3f	293	*/
mimil	0:308f83189a3f	294	static const u_short fcstab[256] = {
mimil	0:308f83189a3f	295	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
mimil	0:308f83189a3f	296	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
mimil	0:308f83189a3f	297	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
mimil	0:308f83189a3f	298	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
mimil	0:308f83189a3f	299	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
mimil	0:308f83189a3f	300	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
mimil	0:308f83189a3f	301	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
mimil	0:308f83189a3f	302	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
mimil	0:308f83189a3f	303	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
mimil	0:308f83189a3f	304	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
mimil	0:308f83189a3f	305	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
mimil	0:308f83189a3f	306	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
mimil	0:308f83189a3f	307	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
mimil	0:308f83189a3f	308	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
mimil	0:308f83189a3f	309	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
mimil	0:308f83189a3f	310	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
mimil	0:308f83189a3f	311	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
mimil	0:308f83189a3f	312	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
mimil	0:308f83189a3f	313	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
mimil	0:308f83189a3f	314	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
mimil	0:308f83189a3f	315	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
mimil	0:308f83189a3f	316	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
mimil	0:308f83189a3f	317	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
mimil	0:308f83189a3f	318	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
mimil	0:308f83189a3f	319	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
mimil	0:308f83189a3f	320	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
mimil	0:308f83189a3f	321	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
mimil	0:308f83189a3f	322	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
mimil	0:308f83189a3f	323	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
mimil	0:308f83189a3f	324	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
mimil	0:308f83189a3f	325	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
mimil	0:308f83189a3f	326	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
mimil	0:308f83189a3f	327	};
mimil	0:308f83189a3f	328
mimil	0:308f83189a3f	329	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
mimil	0:308f83189a3f	330	* to select the specific bit for a character. */
mimil	0:308f83189a3f	331	static u_char pppACCMMask[] = {
mimil	0:308f83189a3f	332	0x01,
mimil	0:308f83189a3f	333	0x02,
mimil	0:308f83189a3f	334	0x04,
mimil	0:308f83189a3f	335	0x08,
mimil	0:308f83189a3f	336	0x10,
mimil	0:308f83189a3f	337	0x20,
mimil	0:308f83189a3f	338	0x40,
mimil	0:308f83189a3f	339	0x80
mimil	0:308f83189a3f	340	};
mimil	0:308f83189a3f	341
mimil	0:308f83189a3f	342	/** Wake up the task blocked in reading from serial line (if any) */
mimil	0:308f83189a3f	343	static void
mimil	0:308f83189a3f	344	pppRecvWakeup(int pd)
mimil	0:308f83189a3f	345	{
mimil	0:308f83189a3f	346	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
mimil	0:308f83189a3f	347	sio_read_abort(pppControl[pd].fd);
mimil	0:308f83189a3f	348	}
mimil	0:308f83189a3f	349	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	350
mimil	0:308f83189a3f	351	void
mimil	0:308f83189a3f	352	pppLinkTerminated(int pd)
mimil	0:308f83189a3f	353	{
mimil	0:308f83189a3f	354	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
mimil	0:308f83189a3f	355
mimil	0:308f83189a3f	356	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	357	if (pppControl[pd].ethif) {
mimil	0:308f83189a3f	358	pppoe_disconnect(pppControl[pd].pppoe_sc);
mimil	0:308f83189a3f	359	} else
mimil	0:308f83189a3f	360	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	361	{
mimil	0:308f83189a3f	362	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	363	PPPControl* pc;
mimil	0:308f83189a3f	364	pppRecvWakeup(pd);
mimil	0:308f83189a3f	365	pc = &pppControl[pd];
mimil	0:308f83189a3f	366	pppDrop(&pc->rx); /* bug fix #17726 */
mimil	0:308f83189a3f	367
mimil	0:308f83189a3f	368	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
mimil	0:308f83189a3f	369	if (pc->linkStatusCB) {
mimil	0:308f83189a3f	370	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
mimil	0:308f83189a3f	371	}
mimil	0:308f83189a3f	372
mimil	0:308f83189a3f	373	pc->openFlag = 0;/**/
mimil	0:308f83189a3f	374	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	375	}
mimil	0:308f83189a3f	376	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
mimil	0:308f83189a3f	377	}
mimil	0:308f83189a3f	378
mimil	0:308f83189a3f	379	void
mimil	0:308f83189a3f	380	pppLinkDown(int pd)
mimil	0:308f83189a3f	381	{
mimil	0:308f83189a3f	382	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
mimil	0:308f83189a3f	383
mimil	0:308f83189a3f	384	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	385	if (pppControl[pd].ethif) {
mimil	0:308f83189a3f	386	pppoe_disconnect(pppControl[pd].pppoe_sc);
mimil	0:308f83189a3f	387	} else
mimil	0:308f83189a3f	388	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	389	{
mimil	0:308f83189a3f	390	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	391	pppRecvWakeup(pd);
mimil	0:308f83189a3f	392	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	393	}
mimil	0:308f83189a3f	394	}
mimil	0:308f83189a3f	395
mimil	0:308f83189a3f	396	/** Initiate LCP open request */
mimil	0:308f83189a3f	397	static void
mimil	0:308f83189a3f	398	pppStart(int pd)
mimil	0:308f83189a3f	399	{
mimil	0:308f83189a3f	400	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
mimil	0:308f83189a3f	401	lcp_lowerup(pd);
mimil	0:308f83189a3f	402	lcp_open(pd); /* Start protocol */
mimil	0:308f83189a3f	403	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
mimil	0:308f83189a3f	404	}
mimil	0:308f83189a3f	405
mimil	0:308f83189a3f	406	/** LCP close request */
mimil	0:308f83189a3f	407	static void
mimil	0:308f83189a3f	408	pppStop(int pd)
mimil	0:308f83189a3f	409	{
mimil	0:308f83189a3f	410	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
mimil	0:308f83189a3f	411	lcp_close(pd, "User request");
mimil	0:308f83189a3f	412	}
mimil	0:308f83189a3f	413
mimil	0:308f83189a3f	414	/** Called when carrier/link is lost */
mimil	0:308f83189a3f	415	static void
mimil	0:308f83189a3f	416	pppHup(int pd)
mimil	0:308f83189a3f	417	{
mimil	0:308f83189a3f	418	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
mimil	0:308f83189a3f	419	lcp_lowerdown(pd);
mimil	0:308f83189a3f	420	link_terminated(pd);
mimil	0:308f83189a3f	421	}
mimil	0:308f83189a3f	422
mimil	0:308f83189a3f	423	/***********************************/
mimil	0:308f83189a3f	424	/* PUBLIC FUNCTION DEFINITIONS */
mimil	0:308f83189a3f	425	/***********************************/
mimil	0:308f83189a3f	426	/* Initialize the PPP subsystem. */
mimil	0:308f83189a3f	427
mimil	0:308f83189a3f	428	struct ppp_settings ppp_settings;
mimil	0:308f83189a3f	429
mimil	0:308f83189a3f	430	void
mimil	0:308f83189a3f	431	pppInit(void)
mimil	0:308f83189a3f	432	{
mimil	0:308f83189a3f	433	struct protent *protp;
mimil	0:308f83189a3f	434	int i, j;
mimil	0:308f83189a3f	435
mimil	0:308f83189a3f	436	memset(&ppp_settings, 0, sizeof(ppp_settings));
mimil	0:308f83189a3f	437	ppp_settings.usepeerdns = 1;
mimil	0:308f83189a3f	438	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
mimil	0:308f83189a3f	439
mimil	0:308f83189a3f	440	magicInit();
mimil	0:308f83189a3f	441
mimil	0:308f83189a3f	442	subnetMask = PP_HTONL(0xffffff00);
mimil	0:308f83189a3f	443
mimil	0:308f83189a3f	444	for (i = 0; i < NUM_PPP; i++) {
mimil	0:308f83189a3f	445	/* Initialize each protocol to the standard option set. */
mimil	0:308f83189a3f	446	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
mimil	0:308f83189a3f	447	(*protp->init)(i);
mimil	0:308f83189a3f	448	}
mimil	0:308f83189a3f	449	}
mimil	0:308f83189a3f	450	}
mimil	0:308f83189a3f	451
mimil	0:308f83189a3f	452	void
mimil	0:308f83189a3f	453	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
mimil	0:308f83189a3f	454	{
mimil	0:308f83189a3f	455	switch(authType) {
mimil	0:308f83189a3f	456	case PPPAUTHTYPE_NONE:
mimil	0:308f83189a3f	457	default:
mimil	0:308f83189a3f	458	#ifdef LWIP_PPP_STRICT_PAP_REJECT
mimil	0:308f83189a3f	459	ppp_settings.refuse_pap = 1;
mimil	0:308f83189a3f	460	#else /* LWIP_PPP_STRICT_PAP_REJECT */
mimil	0:308f83189a3f	461	/* some providers request pap and accept an empty login/pw */
mimil	0:308f83189a3f	462	ppp_settings.refuse_pap = 0;
mimil	0:308f83189a3f	463	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
mimil	0:308f83189a3f	464	ppp_settings.refuse_chap = 1;
mimil	0:308f83189a3f	465	break;
mimil	0:308f83189a3f	466
mimil	0:308f83189a3f	467	case PPPAUTHTYPE_ANY:
mimil	0:308f83189a3f	468	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
mimil	0:308f83189a3f	469	* RFC 1994 says:
mimil	0:308f83189a3f	470	*
mimil	0:308f83189a3f	471	* In practice, within or associated with each PPP server, there is a
mimil	0:308f83189a3f	472	* database which associates "user" names with authentication
mimil	0:308f83189a3f	473	* information ("secrets"). It is not anticipated that a particular
mimil	0:308f83189a3f	474	* named user would be authenticated by multiple methods. This would
mimil	0:308f83189a3f	475	* make the user vulnerable to attacks which negotiate the least secure
mimil	0:308f83189a3f	476	* method from among a set (such as PAP rather than CHAP). If the same
mimil	0:308f83189a3f	477	* secret was used, PAP would reveal the secret to be used later with
mimil	0:308f83189a3f	478	* CHAP.
mimil	0:308f83189a3f	479	*
mimil	0:308f83189a3f	480	* Instead, for each user name there should be an indication of exactly
mimil	0:308f83189a3f	481	* one method used to authenticate that user name. If a user needs to
mimil	0:308f83189a3f	482	* make use of different authentication methods under different
mimil	0:308f83189a3f	483	* circumstances, then distinct user names SHOULD be employed, each of
mimil	0:308f83189a3f	484	* which identifies exactly one authentication method.
mimil	0:308f83189a3f	485	*
mimil	0:308f83189a3f	486	*/
mimil	0:308f83189a3f	487	ppp_settings.refuse_pap = 0;
mimil	0:308f83189a3f	488	ppp_settings.refuse_chap = 0;
mimil	0:308f83189a3f	489	break;
mimil	0:308f83189a3f	490
mimil	0:308f83189a3f	491	case PPPAUTHTYPE_PAP:
mimil	0:308f83189a3f	492	ppp_settings.refuse_pap = 0;
mimil	0:308f83189a3f	493	ppp_settings.refuse_chap = 1;
mimil	0:308f83189a3f	494	break;
mimil	0:308f83189a3f	495
mimil	0:308f83189a3f	496	case PPPAUTHTYPE_CHAP:
mimil	0:308f83189a3f	497	ppp_settings.refuse_pap = 1;
mimil	0:308f83189a3f	498	ppp_settings.refuse_chap = 0;
mimil	0:308f83189a3f	499	break;
mimil	0:308f83189a3f	500	}
mimil	0:308f83189a3f	501
mimil	0:308f83189a3f	502	if(user) {
mimil	0:308f83189a3f	503	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
mimil	0:308f83189a3f	504	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
mimil	0:308f83189a3f	505	} else {
mimil	0:308f83189a3f	506	ppp_settings.user[0] = '\0';
mimil	0:308f83189a3f	507	}
mimil	0:308f83189a3f	508
mimil	0:308f83189a3f	509	if(passwd) {
mimil	0:308f83189a3f	510	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
mimil	0:308f83189a3f	511	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
mimil	0:308f83189a3f	512	} else {
mimil	0:308f83189a3f	513	ppp_settings.passwd[0] = '\0';
mimil	0:308f83189a3f	514	}
mimil	0:308f83189a3f	515	}
mimil	0:308f83189a3f	516
mimil	0:308f83189a3f	517	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	518	/** Open a new PPP connection using the given I/O device.
mimil	0:308f83189a3f	519	* This initializes the PPP control block but does not
mimil	0:308f83189a3f	520	* attempt to negotiate the LCP session. If this port
mimil	0:308f83189a3f	521	* connects to a modem, the modem connection must be
mimil	0:308f83189a3f	522	* established before calling this.
mimil	0:308f83189a3f	523	* Return a new PPP connection descriptor on success or
mimil	0:308f83189a3f	524	* an error code (negative) on failure.
mimil	0:308f83189a3f	525	*
mimil	0:308f83189a3f	526	* pppOpen() is directly defined to this function.
mimil	0:308f83189a3f	527	*/
mimil	0:308f83189a3f	528	int
mimil	0:308f83189a3f	529	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
mimil	0:308f83189a3f	530	{
mimil	0:308f83189a3f	531	PPPControl *pc;
mimil	0:308f83189a3f	532	int pd;
mimil	0:308f83189a3f	533
mimil	0:308f83189a3f	534	if (linkStatusCB == NULL) {
mimil	0:308f83189a3f	535	/* PPP is single-threaded: without a callback,
mimil	0:308f83189a3f	536	* there is no way to know when the link is up. */
mimil	0:308f83189a3f	537	return PPPERR_PARAM;
mimil	0:308f83189a3f	538	}
mimil	0:308f83189a3f	539
mimil	0:308f83189a3f	540	/* Find a free PPP session descriptor. */
mimil	0:308f83189a3f	541	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
mimil	0:308f83189a3f	542
mimil	0:308f83189a3f	543	if (pd >= NUM_PPP) {
mimil	0:308f83189a3f	544	pd = PPPERR_OPEN;
mimil	0:308f83189a3f	545	} else {
mimil	0:308f83189a3f	546	pc = &pppControl[pd];
mimil	0:308f83189a3f	547	/* @todo: is this correct or do I overwrite something? */
mimil	0:308f83189a3f	548	memset(pc, 0, sizeof(PPPControl));
mimil	0:308f83189a3f	549	pc->rx.pd = pd;
mimil	0:308f83189a3f	550	pc->rx.fd = fd;
mimil	0:308f83189a3f	551
mimil	0:308f83189a3f	552	pc->openFlag = 1;
mimil	0:308f83189a3f	553	pc->fd = fd;
mimil	0:308f83189a3f	554
mimil	0:308f83189a3f	555	#if VJ_SUPPORT
mimil	0:308f83189a3f	556	vj_compress_init(&pc->vjComp);
mimil	0:308f83189a3f	557	#endif /* VJ_SUPPORT */
mimil	0:308f83189a3f	558
mimil	0:308f83189a3f	559	/*
mimil	0:308f83189a3f	560	* Default the in and out accm so that escape and flag characters
mimil	0:308f83189a3f	561	* are always escaped.
mimil	0:308f83189a3f	562	*/
mimil	0:308f83189a3f	563	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
mimil	0:308f83189a3f	564	pc->outACCM[15] = 0x60;
mimil	0:308f83189a3f	565
mimil	0:308f83189a3f	566	pc->linkStatusCB = linkStatusCB;
mimil	0:308f83189a3f	567	pc->linkStatusCtx = linkStatusCtx;
mimil	0:308f83189a3f	568
mimil	0:308f83189a3f	569	/*
mimil	0:308f83189a3f	570	* Start the connection and handle incoming events (packet or timeout).
mimil	0:308f83189a3f	571	*/
mimil	0:308f83189a3f	572	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
mimil	0:308f83189a3f	573	pppStart(pd);
mimil	0:308f83189a3f	574	#if PPP_INPROC_OWNTHREAD
mimil	0:308f83189a3f	575	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
mimil	0:308f83189a3f	576	#endif
mimil	0:308f83189a3f	577	}
mimil	0:308f83189a3f	578
mimil	0:308f83189a3f	579	return pd;
mimil	0:308f83189a3f	580	}
mimil	0:308f83189a3f	581	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	582
mimil	0:308f83189a3f	583	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	584	static void pppOverEthernetLinkStatusCB(int pd, int up);
mimil	0:308f83189a3f	585
mimil	0:308f83189a3f	586	void
mimil	0:308f83189a3f	587	pppOverEthernetClose(int pd)
mimil	0:308f83189a3f	588	{
mimil	0:308f83189a3f	589	PPPControl* pc = &pppControl[pd];
mimil	0:308f83189a3f	590
mimil	0:308f83189a3f	591	/* TJL There's no lcp_deinit */
mimil	0:308f83189a3f	592	lcp_close(pd, NULL);
mimil	0:308f83189a3f	593
mimil	0:308f83189a3f	594	pppoe_destroy(&pc->netif);
mimil	0:308f83189a3f	595	}
mimil	0:308f83189a3f	596
mimil	0:308f83189a3f	597	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
mimil	0:308f83189a3f	598	{
mimil	0:308f83189a3f	599	PPPControl *pc;
mimil	0:308f83189a3f	600	int pd;
mimil	0:308f83189a3f	601
mimil	0:308f83189a3f	602	LWIP_UNUSED_ARG(service_name);
mimil	0:308f83189a3f	603	LWIP_UNUSED_ARG(concentrator_name);
mimil	0:308f83189a3f	604
mimil	0:308f83189a3f	605	if (linkStatusCB == NULL) {
mimil	0:308f83189a3f	606	/* PPP is single-threaded: without a callback,
mimil	0:308f83189a3f	607	* there is no way to know when the link is up. */
mimil	0:308f83189a3f	608	return PPPERR_PARAM;
mimil	0:308f83189a3f	609	}
mimil	0:308f83189a3f	610
mimil	0:308f83189a3f	611	/* Find a free PPP session descriptor. Critical region? */
mimil	0:308f83189a3f	612	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
mimil	0:308f83189a3f	613	if (pd >= NUM_PPP) {
mimil	0:308f83189a3f	614	pd = PPPERR_OPEN;
mimil	0:308f83189a3f	615	} else {
mimil	0:308f83189a3f	616	pc = &pppControl[pd];
mimil	0:308f83189a3f	617	memset(pc, 0, sizeof(PPPControl));
mimil	0:308f83189a3f	618	pc->openFlag = 1;
mimil	0:308f83189a3f	619	pc->ethif = ethif;
mimil	0:308f83189a3f	620
mimil	0:308f83189a3f	621	pc->linkStatusCB = linkStatusCB;
mimil	0:308f83189a3f	622	pc->linkStatusCtx = linkStatusCtx;
mimil	0:308f83189a3f	623
mimil	0:308f83189a3f	624	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
mimil	0:308f83189a3f	625	lcp_wantoptions[pd].neg_asyncmap = 0;
mimil	0:308f83189a3f	626	lcp_wantoptions[pd].neg_pcompression = 0;
mimil	0:308f83189a3f	627	lcp_wantoptions[pd].neg_accompression = 0;
mimil	0:308f83189a3f	628
mimil	0:308f83189a3f	629	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
mimil	0:308f83189a3f	630	lcp_allowoptions[pd].neg_asyncmap = 0;
mimil	0:308f83189a3f	631	lcp_allowoptions[pd].neg_pcompression = 0;
mimil	0:308f83189a3f	632	lcp_allowoptions[pd].neg_accompression = 0;
mimil	0:308f83189a3f	633
mimil	0:308f83189a3f	634	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
mimil	0:308f83189a3f	635	pc->openFlag = 0;
mimil	0:308f83189a3f	636	return PPPERR_OPEN;
mimil	0:308f83189a3f	637	}
mimil	0:308f83189a3f	638
mimil	0:308f83189a3f	639	pppoe_connect(pc->pppoe_sc);
mimil	0:308f83189a3f	640	}
mimil	0:308f83189a3f	641
mimil	0:308f83189a3f	642	return pd;
mimil	0:308f83189a3f	643	}
mimil	0:308f83189a3f	644	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	645
mimil	0:308f83189a3f	646
mimil	0:308f83189a3f	647	/* Close a PPP connection and release the descriptor.
mimil	0:308f83189a3f	648	* Any outstanding packets in the queues are dropped.
mimil	0:308f83189a3f	649	* Return 0 on success, an error code on failure. */
mimil	0:308f83189a3f	650	int
mimil	0:308f83189a3f	651	pppClose(int pd)
mimil	0:308f83189a3f	652	{
mimil	0:308f83189a3f	653	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	654	int st = 0;
mimil	0:308f83189a3f	655
mimil	0:308f83189a3f	656	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
mimil	0:308f83189a3f	657
mimil	0:308f83189a3f	658	/* Disconnect */
mimil	0:308f83189a3f	659	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	660	if(pc->ethif) {
mimil	0:308f83189a3f	661	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
mimil	0:308f83189a3f	662	pc->errCode = PPPERR_USER;
mimil	0:308f83189a3f	663	/* This will leave us at PHASE_DEAD. */
mimil	0:308f83189a3f	664	pppStop(pd);
mimil	0:308f83189a3f	665	} else
mimil	0:308f83189a3f	666	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	667	{
mimil	0:308f83189a3f	668	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	669	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
mimil	0:308f83189a3f	670	pc->errCode = PPPERR_USER;
mimil	0:308f83189a3f	671	/* This will leave us at PHASE_DEAD. */
mimil	0:308f83189a3f	672	pppStop(pd);
mimil	0:308f83189a3f	673	pppRecvWakeup(pd);
mimil	0:308f83189a3f	674	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	675	}
mimil	0:308f83189a3f	676
mimil	0:308f83189a3f	677	return st;
mimil	0:308f83189a3f	678	}
mimil	0:308f83189a3f	679
mimil	0:308f83189a3f	680	/* This function is called when carrier is lost on the PPP channel. */
mimil	0:308f83189a3f	681	void
mimil	0:308f83189a3f	682	pppSigHUP(int pd)
mimil	0:308f83189a3f	683	{
mimil	0:308f83189a3f	684	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	685	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	686	if(pc->ethif) {
mimil	0:308f83189a3f	687	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
mimil	0:308f83189a3f	688	pppHup(pd);
mimil	0:308f83189a3f	689	} else
mimil	0:308f83189a3f	690	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	691	{
mimil	0:308f83189a3f	692	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	693	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
mimil	0:308f83189a3f	694	pppHup(pd);
mimil	0:308f83189a3f	695	pppRecvWakeup(pd);
mimil	0:308f83189a3f	696	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	697	}
mimil	0:308f83189a3f	698	}
mimil	0:308f83189a3f	699
mimil	0:308f83189a3f	700	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	701	static void
mimil	0:308f83189a3f	702	nPut(PPPControl pc, struct pbuf nb)
mimil	0:308f83189a3f	703	{
mimil	0:308f83189a3f	704	struct pbuf *b;
mimil	0:308f83189a3f	705	int c;
mimil	0:308f83189a3f	706
mimil	0:308f83189a3f	707	for(b = nb; b != NULL; b = b->next) {
mimil	0:308f83189a3f	708	if((c = sio_write(pc->fd, (u8_t *)b->payload, b->len)) != b->len) {
mimil	0:308f83189a3f	709	PPPDEBUG(LOG_WARNING,
mimil	0:308f83189a3f	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));
mimil	0:308f83189a3f	711	LINK_STATS_INC(link.err);
mimil	0:308f83189a3f	712	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
mimil	0:308f83189a3f	713	snmp_inc_ifoutdiscards(&pc->netif);
mimil	0:308f83189a3f	714	pbuf_free(nb);
mimil	0:308f83189a3f	715	return;
mimil	0:308f83189a3f	716	}
mimil	0:308f83189a3f	717	}
mimil	0:308f83189a3f	718
mimil	0:308f83189a3f	719	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
mimil	0:308f83189a3f	720	snmp_inc_ifoutucastpkts(&pc->netif);
mimil	0:308f83189a3f	721	pbuf_free(nb);
mimil	0:308f83189a3f	722	LINK_STATS_INC(link.xmit);
mimil	0:308f83189a3f	723	}
mimil	0:308f83189a3f	724
mimil	0:308f83189a3f	725	/*
mimil	0:308f83189a3f	726	* pppAppend - append given character to end of given pbuf. If outACCM
mimil	0:308f83189a3f	727	* is not NULL and the character needs to be escaped, do so.
mimil	0:308f83189a3f	728	* If pbuf is full, append another.
mimil	0:308f83189a3f	729	* Return the current pbuf.
mimil	0:308f83189a3f	730	*/
mimil	0:308f83189a3f	731	static struct pbuf *
mimil	0:308f83189a3f	732	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
mimil	0:308f83189a3f	733	{
mimil	0:308f83189a3f	734	struct pbuf *tb = nb;
mimil	0:308f83189a3f	735
mimil	0:308f83189a3f	736	/* Make sure there is room for the character and an escape code.
mimil	0:308f83189a3f	737	* Sure we don't quite fill the buffer if the character doesn't
mimil	0:308f83189a3f	738	* get escaped but is one character worth complicating this? */
mimil	0:308f83189a3f	739	/* Note: We assume no packet header. */
mimil	0:308f83189a3f	740	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
mimil	0:308f83189a3f	741	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
mimil	0:308f83189a3f	742	if (tb) {
mimil	0:308f83189a3f	743	nb->next = tb;
mimil	0:308f83189a3f	744	} else {
mimil	0:308f83189a3f	745	LINK_STATS_INC(link.memerr);
mimil	0:308f83189a3f	746	}
mimil	0:308f83189a3f	747	nb = tb;
mimil	0:308f83189a3f	748	}
mimil	0:308f83189a3f	749
mimil	0:308f83189a3f	750	if (nb) {
mimil	0:308f83189a3f	751	if (outACCM && ESCAPE_P(*outACCM, c)) {
mimil	0:308f83189a3f	752	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
mimil	0:308f83189a3f	753	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
mimil	0:308f83189a3f	754	} else {
mimil	0:308f83189a3f	755	((u_char)nb->payload + nb->len++) = c;
mimil	0:308f83189a3f	756	}
mimil	0:308f83189a3f	757	}
mimil	0:308f83189a3f	758
mimil	0:308f83189a3f	759	return tb;
mimil	0:308f83189a3f	760	}
mimil	0:308f83189a3f	761	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	762
mimil	0:308f83189a3f	763	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	764	static err_t
mimil	0:308f83189a3f	765	pppifOutputOverEthernet(int pd, struct pbuf *p)
mimil	0:308f83189a3f	766	{
mimil	0:308f83189a3f	767	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	768	struct pbuf *pb;
mimil	0:308f83189a3f	769	u_short protocol = PPP_IP;
mimil	0:308f83189a3f	770	int i=0;
mimil	0:308f83189a3f	771	u16_t tot_len;
mimil	0:308f83189a3f	772
mimil	0:308f83189a3f	773	/* @todo: try to use pbuf_header() here! */
mimil	0:308f83189a3f	774	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
mimil	0:308f83189a3f	775	if(!pb) {
mimil	0:308f83189a3f	776	LINK_STATS_INC(link.memerr);
mimil	0:308f83189a3f	777	LINK_STATS_INC(link.proterr);
mimil	0:308f83189a3f	778	snmp_inc_ifoutdiscards(&pc->netif);
mimil	0:308f83189a3f	779	return ERR_MEM;
mimil	0:308f83189a3f	780	}
mimil	0:308f83189a3f	781
mimil	0:308f83189a3f	782	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
mimil	0:308f83189a3f	783
mimil	0:308f83189a3f	784	pc->lastXMit = sys_jiffies();
mimil	0:308f83189a3f	785
mimil	0:308f83189a3f	786	if (!pc->pcomp \|\| protocol > 0xFF) {
mimil	0:308f83189a3f	787	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
mimil	0:308f83189a3f	788	}
mimil	0:308f83189a3f	789	((u_char)pb->payload + i) = protocol & 0xFF;
mimil	0:308f83189a3f	790
mimil	0:308f83189a3f	791	pbuf_chain(pb, p);
mimil	0:308f83189a3f	792	tot_len = pb->tot_len;
mimil	0:308f83189a3f	793
mimil	0:308f83189a3f	794	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
mimil	0:308f83189a3f	795	LINK_STATS_INC(link.err);
mimil	0:308f83189a3f	796	snmp_inc_ifoutdiscards(&pc->netif);
mimil	0:308f83189a3f	797	return PPPERR_DEVICE;
mimil	0:308f83189a3f	798	}
mimil	0:308f83189a3f	799
mimil	0:308f83189a3f	800	snmp_add_ifoutoctets(&pc->netif, tot_len);
mimil	0:308f83189a3f	801	snmp_inc_ifoutucastpkts(&pc->netif);
mimil	0:308f83189a3f	802	LINK_STATS_INC(link.xmit);
mimil	0:308f83189a3f	803	return ERR_OK;
mimil	0:308f83189a3f	804	}
mimil	0:308f83189a3f	805	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	806
mimil	0:308f83189a3f	807	/* Send a packet on the given connection. */
mimil	0:308f83189a3f	808	static err_t
mimil	0:308f83189a3f	809	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
mimil	0:308f83189a3f	810	{
mimil	0:308f83189a3f	811	int pd = (int)(size_t)netif->state;
mimil	0:308f83189a3f	812	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	813	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	814	u_short protocol = PPP_IP;
mimil	0:308f83189a3f	815	u_int fcsOut = PPP_INITFCS;
mimil	0:308f83189a3f	816	struct pbuf headMB = NULL, tailMB = NULL, *p;
mimil	0:308f83189a3f	817	u_char c;
mimil	0:308f83189a3f	818	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	819
mimil	0:308f83189a3f	820	LWIP_UNUSED_ARG(ipaddr);
mimil	0:308f83189a3f	821
mimil	0:308f83189a3f	822	/* Validate parameters. */
mimil	0:308f83189a3f	823	/* We let any protocol value go through - it can't hurt us
mimil	0:308f83189a3f	824	* and the peer will just drop it if it's not accepting it. */
mimil	0:308f83189a3f	825	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
mimil	0:308f83189a3f	826	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
mimil	0:308f83189a3f	827	pd, PPP_IP, pb));
mimil	0:308f83189a3f	828	LINK_STATS_INC(link.opterr);
mimil	0:308f83189a3f	829	LINK_STATS_INC(link.drop);
mimil	0:308f83189a3f	830	snmp_inc_ifoutdiscards(netif);
mimil	0:308f83189a3f	831	return ERR_ARG;
mimil	0:308f83189a3f	832	}
mimil	0:308f83189a3f	833
mimil	0:308f83189a3f	834	/* Check that the link is up. */
mimil	0:308f83189a3f	835	if (lcp_phase[pd] == PHASE_DEAD) {
mimil	0:308f83189a3f	836	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
mimil	0:308f83189a3f	837	LINK_STATS_INC(link.rterr);
mimil	0:308f83189a3f	838	LINK_STATS_INC(link.drop);
mimil	0:308f83189a3f	839	snmp_inc_ifoutdiscards(netif);
mimil	0:308f83189a3f	840	return ERR_RTE;
mimil	0:308f83189a3f	841	}
mimil	0:308f83189a3f	842
mimil	0:308f83189a3f	843	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	844	if(pc->ethif) {
mimil	0:308f83189a3f	845	return pppifOutputOverEthernet(pd, pb);
mimil	0:308f83189a3f	846	}
mimil	0:308f83189a3f	847	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	848
mimil	0:308f83189a3f	849	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	850	/* Grab an output buffer. */
mimil	0:308f83189a3f	851	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
mimil	0:308f83189a3f	852	if (headMB == NULL) {
mimil	0:308f83189a3f	853	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
mimil	0:308f83189a3f	854	LINK_STATS_INC(link.memerr);
mimil	0:308f83189a3f	855	LINK_STATS_INC(link.drop);
mimil	0:308f83189a3f	856	snmp_inc_ifoutdiscards(netif);
mimil	0:308f83189a3f	857	return ERR_MEM;
mimil	0:308f83189a3f	858	}
mimil	0:308f83189a3f	859
mimil	0:308f83189a3f	860	#if VJ_SUPPORT
mimil	0:308f83189a3f	861	/*
mimil	0:308f83189a3f	862	* Attempt Van Jacobson header compression if VJ is configured and
mimil	0:308f83189a3f	863	* this is an IP packet.
mimil	0:308f83189a3f	864	*/
mimil	0:308f83189a3f	865	if (protocol == PPP_IP && pc->vjEnabled) {
mimil	0:308f83189a3f	866	switch (vj_compress_tcp(&pc->vjComp, pb)) {
mimil	0:308f83189a3f	867	case TYPE_IP:
mimil	0:308f83189a3f	868	/* No change...
mimil	0:308f83189a3f	869	protocol = PPP_IP_PROTOCOL; */
mimil	0:308f83189a3f	870	break;
mimil	0:308f83189a3f	871	case TYPE_COMPRESSED_TCP:
mimil	0:308f83189a3f	872	protocol = PPP_VJC_COMP;
mimil	0:308f83189a3f	873	break;
mimil	0:308f83189a3f	874	case TYPE_UNCOMPRESSED_TCP:
mimil	0:308f83189a3f	875	protocol = PPP_VJC_UNCOMP;
mimil	0:308f83189a3f	876	break;
mimil	0:308f83189a3f	877	default:
mimil	0:308f83189a3f	878	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
mimil	0:308f83189a3f	879	LINK_STATS_INC(link.proterr);
mimil	0:308f83189a3f	880	LINK_STATS_INC(link.drop);
mimil	0:308f83189a3f	881	snmp_inc_ifoutdiscards(netif);
mimil	0:308f83189a3f	882	pbuf_free(headMB);
mimil	0:308f83189a3f	883	return ERR_VAL;
mimil	0:308f83189a3f	884	}
mimil	0:308f83189a3f	885	}
mimil	0:308f83189a3f	886	#endif /* VJ_SUPPORT */
mimil	0:308f83189a3f	887
mimil	0:308f83189a3f	888	tailMB = headMB;
mimil	0:308f83189a3f	889
mimil	0:308f83189a3f	890	/* Build the PPP header. */
mimil	0:308f83189a3f	891	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
mimil	0:308f83189a3f	892	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
mimil	0:308f83189a3f	893	}
mimil	0:308f83189a3f	894
mimil	0:308f83189a3f	895	pc->lastXMit = sys_jiffies();
mimil	0:308f83189a3f	896	if (!pc->accomp) {
mimil	0:308f83189a3f	897	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
mimil	0:308f83189a3f	898	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
mimil	0:308f83189a3f	899	fcsOut = PPP_FCS(fcsOut, PPP_UI);
mimil	0:308f83189a3f	900	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
mimil	0:308f83189a3f	901	}
mimil	0:308f83189a3f	902	if (!pc->pcomp \|\| protocol > 0xFF) {
mimil	0:308f83189a3f	903	c = (protocol >> 8) & 0xFF;
mimil	0:308f83189a3f	904	fcsOut = PPP_FCS(fcsOut, c);
mimil	0:308f83189a3f	905	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mimil	0:308f83189a3f	906	}
mimil	0:308f83189a3f	907	c = protocol & 0xFF;
mimil	0:308f83189a3f	908	fcsOut = PPP_FCS(fcsOut, c);
mimil	0:308f83189a3f	909	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mimil	0:308f83189a3f	910
mimil	0:308f83189a3f	911	/* Load packet. */
mimil	0:308f83189a3f	912	for(p = pb; p; p = p->next) {
mimil	0:308f83189a3f	913	int n;
mimil	0:308f83189a3f	914	u_char *sPtr;
mimil	0:308f83189a3f	915
mimil	0:308f83189a3f	916	sPtr = (u_char*)p->payload;
mimil	0:308f83189a3f	917	n = p->len;
mimil	0:308f83189a3f	918	while (n-- > 0) {
mimil	0:308f83189a3f	919	c = *sPtr++;
mimil	0:308f83189a3f	920
mimil	0:308f83189a3f	921	/* Update FCS before checking for special characters. */
mimil	0:308f83189a3f	922	fcsOut = PPP_FCS(fcsOut, c);
mimil	0:308f83189a3f	923
mimil	0:308f83189a3f	924	/* Copy to output buffer escaping special characters. */
mimil	0:308f83189a3f	925	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mimil	0:308f83189a3f	926	}
mimil	0:308f83189a3f	927	}
mimil	0:308f83189a3f	928
mimil	0:308f83189a3f	929	/* Add FCS and trailing flag. */
mimil	0:308f83189a3f	930	c = ~fcsOut & 0xFF;
mimil	0:308f83189a3f	931	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mimil	0:308f83189a3f	932	c = (~fcsOut >> 8) & 0xFF;
mimil	0:308f83189a3f	933	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mimil	0:308f83189a3f	934	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
mimil	0:308f83189a3f	935
mimil	0:308f83189a3f	936	/* If we failed to complete the packet, throw it away. */
mimil	0:308f83189a3f	937	if (!tailMB) {
mimil	0:308f83189a3f	938	PPPDEBUG(LOG_WARNING,
mimil	0:308f83189a3f	939	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
mimil	0:308f83189a3f	940	pd, protocol));
mimil	0:308f83189a3f	941	pbuf_free(headMB);
mimil	0:308f83189a3f	942	LINK_STATS_INC(link.memerr);
mimil	0:308f83189a3f	943	LINK_STATS_INC(link.drop);
mimil	0:308f83189a3f	944	snmp_inc_ifoutdiscards(netif);
mimil	0:308f83189a3f	945	return ERR_MEM;
mimil	0:308f83189a3f	946	}
mimil	0:308f83189a3f	947
mimil	0:308f83189a3f	948	/* Send it. */
mimil	0:308f83189a3f	949	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
mimil	0:308f83189a3f	950
mimil	0:308f83189a3f	951	nPut(pc, headMB);
mimil	0:308f83189a3f	952	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	953
mimil	0:308f83189a3f	954	return ERR_OK;
mimil	0:308f83189a3f	955	}
mimil	0:308f83189a3f	956
mimil	0:308f83189a3f	957	/* Get and set parameters for the given connection.
mimil	0:308f83189a3f	958	* Return 0 on success, an error code on failure. */
mimil	0:308f83189a3f	959	int
mimil	0:308f83189a3f	960	pppIOCtl(int pd, int cmd, void *arg)
mimil	0:308f83189a3f	961	{
mimil	0:308f83189a3f	962	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	963	int st = 0;
mimil	0:308f83189a3f	964
mimil	0:308f83189a3f	965	if (pd < 0 \|\| pd >= NUM_PPP) {
mimil	0:308f83189a3f	966	st = PPPERR_PARAM;
mimil	0:308f83189a3f	967	} else {
mimil	0:308f83189a3f	968	switch(cmd) {
mimil	0:308f83189a3f	969	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
mimil	0:308f83189a3f	970	if (arg) {
mimil	0:308f83189a3f	971	(int )arg = (int)(pc->if_up);
mimil	0:308f83189a3f	972	} else {
mimil	0:308f83189a3f	973	st = PPPERR_PARAM;
mimil	0:308f83189a3f	974	}
mimil	0:308f83189a3f	975	break;
mimil	0:308f83189a3f	976	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
mimil	0:308f83189a3f	977	if (arg) {
mimil	0:308f83189a3f	978	pc->errCode = (int )arg;
mimil	0:308f83189a3f	979	} else {
mimil	0:308f83189a3f	980	st = PPPERR_PARAM;
mimil	0:308f83189a3f	981	}
mimil	0:308f83189a3f	982	break;
mimil	0:308f83189a3f	983	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
mimil	0:308f83189a3f	984	if (arg) {
mimil	0:308f83189a3f	985	(int )arg = (int)(pc->errCode);
mimil	0:308f83189a3f	986	} else {
mimil	0:308f83189a3f	987	st = PPPERR_PARAM;
mimil	0:308f83189a3f	988	}
mimil	0:308f83189a3f	989	break;
mimil	0:308f83189a3f	990	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	991	case PPPCTLG_FD: /* Get the fd associated with the ppp */
mimil	0:308f83189a3f	992	if (arg) {
mimil	0:308f83189a3f	993	(sio_fd_t )arg = pc->fd;
mimil	0:308f83189a3f	994	} else {
mimil	0:308f83189a3f	995	st = PPPERR_PARAM;
mimil	0:308f83189a3f	996	}
mimil	0:308f83189a3f	997	break;
mimil	0:308f83189a3f	998	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	999	default:
mimil	0:308f83189a3f	1000	st = PPPERR_PARAM;
mimil	0:308f83189a3f	1001	break;
mimil	0:308f83189a3f	1002	}
mimil	0:308f83189a3f	1003	}
mimil	0:308f83189a3f	1004
mimil	0:308f83189a3f	1005	return st;
mimil	0:308f83189a3f	1006	}
mimil	0:308f83189a3f	1007
mimil	0:308f83189a3f	1008	/*
mimil	0:308f83189a3f	1009	* Return the Maximum Transmission Unit for the given PPP connection.
mimil	0:308f83189a3f	1010	*/
mimil	0:308f83189a3f	1011	u_short
mimil	0:308f83189a3f	1012	pppMTU(int pd)
mimil	0:308f83189a3f	1013	{
mimil	0:308f83189a3f	1014	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	1015	u_short st;
mimil	0:308f83189a3f	1016
mimil	0:308f83189a3f	1017	/* Validate parameters. */
mimil	0:308f83189a3f	1018	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mimil	0:308f83189a3f	1019	st = 0;
mimil	0:308f83189a3f	1020	} else {
mimil	0:308f83189a3f	1021	st = pc->mtu;
mimil	0:308f83189a3f	1022	}
mimil	0:308f83189a3f	1023
mimil	0:308f83189a3f	1024	return st;
mimil	0:308f83189a3f	1025	}
mimil	0:308f83189a3f	1026
mimil	0:308f83189a3f	1027	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	1028	int
mimil	0:308f83189a3f	1029	pppWriteOverEthernet(int pd, const u_char *s, int n)
mimil	0:308f83189a3f	1030	{
mimil	0:308f83189a3f	1031	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	1032	struct pbuf *pb;
mimil	0:308f83189a3f	1033
mimil	0:308f83189a3f	1034	/* skip address & flags */
mimil	0:308f83189a3f	1035	s += 2;
mimil	0:308f83189a3f	1036	n -= 2;
mimil	0:308f83189a3f	1037
mimil	0:308f83189a3f	1038	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
mimil	0:308f83189a3f	1039	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
mimil	0:308f83189a3f	1040	if(!pb) {
mimil	0:308f83189a3f	1041	LINK_STATS_INC(link.memerr);
mimil	0:308f83189a3f	1042	LINK_STATS_INC(link.proterr);
mimil	0:308f83189a3f	1043	snmp_inc_ifoutdiscards(&pc->netif);
mimil	0:308f83189a3f	1044	return PPPERR_ALLOC;
mimil	0:308f83189a3f	1045	}
mimil	0:308f83189a3f	1046
mimil	0:308f83189a3f	1047	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
mimil	0:308f83189a3f	1048
mimil	0:308f83189a3f	1049	pc->lastXMit = sys_jiffies();
mimil	0:308f83189a3f	1050
mimil	0:308f83189a3f	1051	MEMCPY(pb->payload, s, n);
mimil	0:308f83189a3f	1052
mimil	0:308f83189a3f	1053	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
mimil	0:308f83189a3f	1054	LINK_STATS_INC(link.err);
mimil	0:308f83189a3f	1055	snmp_inc_ifoutdiscards(&pc->netif);
mimil	0:308f83189a3f	1056	return PPPERR_DEVICE;
mimil	0:308f83189a3f	1057	}
mimil	0:308f83189a3f	1058
mimil	0:308f83189a3f	1059	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
mimil	0:308f83189a3f	1060	snmp_inc_ifoutucastpkts(&pc->netif);
mimil	0:308f83189a3f	1061	LINK_STATS_INC(link.xmit);
mimil	0:308f83189a3f	1062	return PPPERR_NONE;
mimil	0:308f83189a3f	1063	}
mimil	0:308f83189a3f	1064	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	1065
mimil	0:308f83189a3f	1066	/*
mimil	0:308f83189a3f	1067	* Write n characters to a ppp link.
mimil	0:308f83189a3f	1068	* RETURN: >= 0 Number of characters written
mimil	0:308f83189a3f	1069	* -1 Failed to write to device
mimil	0:308f83189a3f	1070	*/
mimil	0:308f83189a3f	1071	int
mimil	0:308f83189a3f	1072	pppWrite(int pd, const u_char *s, int n)
mimil	0:308f83189a3f	1073	{
mimil	0:308f83189a3f	1074	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	1075	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	1076	u_char c;
mimil	0:308f83189a3f	1077	u_int fcsOut;
mimil	0:308f83189a3f	1078	struct pbuf headMB, tailMB;
mimil	0:308f83189a3f	1079	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	1080
mimil	0:308f83189a3f	1081	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	1082	if(pc->ethif) {
mimil	0:308f83189a3f	1083	return pppWriteOverEthernet(pd, s, n);
mimil	0:308f83189a3f	1084	}
mimil	0:308f83189a3f	1085	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	1086
mimil	0:308f83189a3f	1087	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	1088	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
mimil	0:308f83189a3f	1089	if (headMB == NULL) {
mimil	0:308f83189a3f	1090	LINK_STATS_INC(link.memerr);
mimil	0:308f83189a3f	1091	LINK_STATS_INC(link.proterr);
mimil	0:308f83189a3f	1092	snmp_inc_ifoutdiscards(&pc->netif);
mimil	0:308f83189a3f	1093	return PPPERR_ALLOC;
mimil	0:308f83189a3f	1094	}
mimil	0:308f83189a3f	1095
mimil	0:308f83189a3f	1096	tailMB = headMB;
mimil	0:308f83189a3f	1097
mimil	0:308f83189a3f	1098	/* If the link has been idle, we'll send a fresh flag character to
mimil	0:308f83189a3f	1099	* flush any noise. */
mimil	0:308f83189a3f	1100	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
mimil	0:308f83189a3f	1101	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
mimil	0:308f83189a3f	1102	}
mimil	0:308f83189a3f	1103	pc->lastXMit = sys_jiffies();
mimil	0:308f83189a3f	1104
mimil	0:308f83189a3f	1105	fcsOut = PPP_INITFCS;
mimil	0:308f83189a3f	1106	/* Load output buffer. */
mimil	0:308f83189a3f	1107	while (n-- > 0) {
mimil	0:308f83189a3f	1108	c = *s++;
mimil	0:308f83189a3f	1109
mimil	0:308f83189a3f	1110	/* Update FCS before checking for special characters. */
mimil	0:308f83189a3f	1111	fcsOut = PPP_FCS(fcsOut, c);
mimil	0:308f83189a3f	1112
mimil	0:308f83189a3f	1113	/* Copy to output buffer escaping special characters. */
mimil	0:308f83189a3f	1114	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mimil	0:308f83189a3f	1115	}
mimil	0:308f83189a3f	1116
mimil	0:308f83189a3f	1117	/* Add FCS and trailing flag. */
mimil	0:308f83189a3f	1118	c = ~fcsOut & 0xFF;
mimil	0:308f83189a3f	1119	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mimil	0:308f83189a3f	1120	c = (~fcsOut >> 8) & 0xFF;
mimil	0:308f83189a3f	1121	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mimil	0:308f83189a3f	1122	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
mimil	0:308f83189a3f	1123
mimil	0:308f83189a3f	1124	/* If we failed to complete the packet, throw it away.
mimil	0:308f83189a3f	1125	* Otherwise send it. */
mimil	0:308f83189a3f	1126	if (!tailMB) {
mimil	0:308f83189a3f	1127	PPPDEBUG(LOG_WARNING,
mimil	0:308f83189a3f	1128	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
mimil	0:308f83189a3f	1129	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
mimil	0:308f83189a3f	1130	pbuf_free(headMB);
mimil	0:308f83189a3f	1131	LINK_STATS_INC(link.memerr);
mimil	0:308f83189a3f	1132	LINK_STATS_INC(link.proterr);
mimil	0:308f83189a3f	1133	snmp_inc_ifoutdiscards(&pc->netif);
mimil	0:308f83189a3f	1134	return PPPERR_ALLOC;
mimil	0:308f83189a3f	1135	}
mimil	0:308f83189a3f	1136
mimil	0:308f83189a3f	1137	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
mimil	0:308f83189a3f	1138	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
mimil	0:308f83189a3f	1139	nPut(pc, headMB);
mimil	0:308f83189a3f	1140	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	1141
mimil	0:308f83189a3f	1142	return PPPERR_NONE;
mimil	0:308f83189a3f	1143	}
mimil	0:308f83189a3f	1144
mimil	0:308f83189a3f	1145	/*
mimil	0:308f83189a3f	1146	* ppp_send_config - configure the transmit characteristics of
mimil	0:308f83189a3f	1147	* the ppp interface.
mimil	0:308f83189a3f	1148	*/
mimil	0:308f83189a3f	1149	void
mimil	0:308f83189a3f	1150	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
mimil	0:308f83189a3f	1151	{
mimil	0:308f83189a3f	1152	PPPControl *pc = &pppControl[unit];
mimil	0:308f83189a3f	1153	int i;
mimil	0:308f83189a3f	1154
mimil	0:308f83189a3f	1155	pc->mtu = mtu;
mimil	0:308f83189a3f	1156	pc->pcomp = pcomp;
mimil	0:308f83189a3f	1157	pc->accomp = accomp;
mimil	0:308f83189a3f	1158
mimil	0:308f83189a3f	1159	/* Load the ACCM bits for the 32 control codes. */
mimil	0:308f83189a3f	1160	for (i = 0; i < 32/8; i++) {
mimil	0:308f83189a3f	1161	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
mimil	0:308f83189a3f	1162	}
mimil	0:308f83189a3f	1163	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
mimil	0:308f83189a3f	1164	unit,
mimil	0:308f83189a3f	1165	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
mimil	0:308f83189a3f	1166	}
mimil	0:308f83189a3f	1167
mimil	0:308f83189a3f	1168
mimil	0:308f83189a3f	1169	/*
mimil	0:308f83189a3f	1170	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
mimil	0:308f83189a3f	1171	*/
mimil	0:308f83189a3f	1172	void
mimil	0:308f83189a3f	1173	ppp_set_xaccm(int unit, ext_accm *accm)
mimil	0:308f83189a3f	1174	{
mimil	0:308f83189a3f	1175	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
mimil	0:308f83189a3f	1176	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
mimil	0:308f83189a3f	1177	unit,
mimil	0:308f83189a3f	1178	pppControl[unit].outACCM[0],
mimil	0:308f83189a3f	1179	pppControl[unit].outACCM[1],
mimil	0:308f83189a3f	1180	pppControl[unit].outACCM[2],
mimil	0:308f83189a3f	1181	pppControl[unit].outACCM[3]));
mimil	0:308f83189a3f	1182	}
mimil	0:308f83189a3f	1183
mimil	0:308f83189a3f	1184
mimil	0:308f83189a3f	1185	/*
mimil	0:308f83189a3f	1186	* ppp_recv_config - configure the receive-side characteristics of
mimil	0:308f83189a3f	1187	* the ppp interface.
mimil	0:308f83189a3f	1188	*/
mimil	0:308f83189a3f	1189	void
mimil	0:308f83189a3f	1190	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
mimil	0:308f83189a3f	1191	{
mimil	0:308f83189a3f	1192	PPPControl *pc = &pppControl[unit];
mimil	0:308f83189a3f	1193	int i;
mimil	0:308f83189a3f	1194	SYS_ARCH_DECL_PROTECT(lev);
mimil	0:308f83189a3f	1195
mimil	0:308f83189a3f	1196	LWIP_UNUSED_ARG(accomp);
mimil	0:308f83189a3f	1197	LWIP_UNUSED_ARG(pcomp);
mimil	0:308f83189a3f	1198	LWIP_UNUSED_ARG(mru);
mimil	0:308f83189a3f	1199
mimil	0:308f83189a3f	1200	/* Load the ACCM bits for the 32 control codes. */
mimil	0:308f83189a3f	1201	SYS_ARCH_PROTECT(lev);
mimil	0:308f83189a3f	1202	for (i = 0; i < 32 / 8; i++) {
mimil	0:308f83189a3f	1203	/* @todo: does this work? ext_accm has been modified from pppd! */
mimil	0:308f83189a3f	1204	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
mimil	0:308f83189a3f	1205	}
mimil	0:308f83189a3f	1206	SYS_ARCH_UNPROTECT(lev);
mimil	0:308f83189a3f	1207	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
mimil	0:308f83189a3f	1208	unit,
mimil	0:308f83189a3f	1209	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
mimil	0:308f83189a3f	1210	}
mimil	0:308f83189a3f	1211
mimil	0:308f83189a3f	1212	#if 0
mimil	0:308f83189a3f	1213	/*
mimil	0:308f83189a3f	1214	* ccp_test - ask kernel whether a given compression method
mimil	0:308f83189a3f	1215	* is acceptable for use. Returns 1 if the method and parameters
mimil	0:308f83189a3f	1216	* are OK, 0 if the method is known but the parameters are not OK
mimil	0:308f83189a3f	1217	* (e.g. code size should be reduced), or -1 if the method is unknown.
mimil	0:308f83189a3f	1218	*/
mimil	0:308f83189a3f	1219	int
mimil	0:308f83189a3f	1220	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
mimil	0:308f83189a3f	1221	{
mimil	0:308f83189a3f	1222	return 0; /* XXX Currently no compression. */
mimil	0:308f83189a3f	1223	}
mimil	0:308f83189a3f	1224
mimil	0:308f83189a3f	1225	/*
mimil	0:308f83189a3f	1226	* ccp_flags_set - inform kernel about the current state of CCP.
mimil	0:308f83189a3f	1227	*/
mimil	0:308f83189a3f	1228	void
mimil	0:308f83189a3f	1229	ccp_flags_set(int unit, int isopen, int isup)
mimil	0:308f83189a3f	1230	{
mimil	0:308f83189a3f	1231	/* XXX */
mimil	0:308f83189a3f	1232	}
mimil	0:308f83189a3f	1233
mimil	0:308f83189a3f	1234	/*
mimil	0:308f83189a3f	1235	* ccp_fatal_error - returns 1 if decompression was disabled as a
mimil	0:308f83189a3f	1236	* result of an error detected after decompression of a packet,
mimil	0:308f83189a3f	1237	* 0 otherwise. This is necessary because of patent nonsense.
mimil	0:308f83189a3f	1238	*/
mimil	0:308f83189a3f	1239	int
mimil	0:308f83189a3f	1240	ccp_fatal_error(int unit)
mimil	0:308f83189a3f	1241	{
mimil	0:308f83189a3f	1242	/* XXX */
mimil	0:308f83189a3f	1243	return 0;
mimil	0:308f83189a3f	1244	}
mimil	0:308f83189a3f	1245	#endif
mimil	0:308f83189a3f	1246
mimil	0:308f83189a3f	1247	/*
mimil	0:308f83189a3f	1248	* get_idle_time - return how long the link has been idle.
mimil	0:308f83189a3f	1249	*/
mimil	0:308f83189a3f	1250	int
mimil	0:308f83189a3f	1251	get_idle_time(int u, struct ppp_idle *ip)
mimil	0:308f83189a3f	1252	{
mimil	0:308f83189a3f	1253	/* XXX */
mimil	0:308f83189a3f	1254	LWIP_UNUSED_ARG(u);
mimil	0:308f83189a3f	1255	LWIP_UNUSED_ARG(ip);
mimil	0:308f83189a3f	1256
mimil	0:308f83189a3f	1257	return 0;
mimil	0:308f83189a3f	1258	}
mimil	0:308f83189a3f	1259
mimil	0:308f83189a3f	1260
mimil	0:308f83189a3f	1261	/*
mimil	0:308f83189a3f	1262	* Return user specified netmask, modified by any mask we might determine
mimil	0:308f83189a3f	1263	* for address `addr' (in network byte order).
mimil	0:308f83189a3f	1264	* Here we scan through the system's list of interfaces, looking for
mimil	0:308f83189a3f	1265	* any non-point-to-point interfaces which might appear to be on the same
mimil	0:308f83189a3f	1266	* network as `addr'. If we find any, we OR in their netmask to the
mimil	0:308f83189a3f	1267	* user-specified netmask.
mimil	0:308f83189a3f	1268	*/
mimil	0:308f83189a3f	1269	u32_t
mimil	0:308f83189a3f	1270	GetMask(u32_t addr)
mimil	0:308f83189a3f	1271	{
mimil	0:308f83189a3f	1272	u32_t mask, nmask;
mimil	0:308f83189a3f	1273
mimil	0:308f83189a3f	1274	htonl(addr);
mimil	0:308f83189a3f	1275	if (IP_CLASSA(addr)) { /* determine network mask for address class */
mimil	0:308f83189a3f	1276	nmask = IP_CLASSA_NET;
mimil	0:308f83189a3f	1277	} else if (IP_CLASSB(addr)) {
mimil	0:308f83189a3f	1278	nmask = IP_CLASSB_NET;
mimil	0:308f83189a3f	1279	} else {
mimil	0:308f83189a3f	1280	nmask = IP_CLASSC_NET;
mimil	0:308f83189a3f	1281	}
mimil	0:308f83189a3f	1282
mimil	0:308f83189a3f	1283	/* class D nets are disallowed by bad_ip_adrs */
mimil	0:308f83189a3f	1284	mask = subnetMask \| htonl(nmask);
mimil	0:308f83189a3f	1285
mimil	0:308f83189a3f	1286	/* XXX
mimil	0:308f83189a3f	1287	* Scan through the system's network interfaces.
mimil	0:308f83189a3f	1288	* Get each netmask and OR them into our mask.
mimil	0:308f83189a3f	1289	*/
mimil	0:308f83189a3f	1290
mimil	0:308f83189a3f	1291	return mask;
mimil	0:308f83189a3f	1292	}
mimil	0:308f83189a3f	1293
mimil	0:308f83189a3f	1294	/*
mimil	0:308f83189a3f	1295	* sifvjcomp - config tcp header compression
mimil	0:308f83189a3f	1296	*/
mimil	0:308f83189a3f	1297	int
mimil	0:308f83189a3f	1298	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
mimil	0:308f83189a3f	1299	{
mimil	0:308f83189a3f	1300	#if PPPOS_SUPPORT && VJ_SUPPORT
mimil	0:308f83189a3f	1301	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	1302
mimil	0:308f83189a3f	1303	pc->vjEnabled = vjcomp;
mimil	0:308f83189a3f	1304	pc->vjComp.compressSlot = cidcomp;
mimil	0:308f83189a3f	1305	pc->vjComp.maxSlotIndex = maxcid;
mimil	0:308f83189a3f	1306	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
mimil	0:308f83189a3f	1307	vjcomp, cidcomp, maxcid));
mimil	0:308f83189a3f	1308	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
mimil	0:308f83189a3f	1309	LWIP_UNUSED_ARG(pd);
mimil	0:308f83189a3f	1310	LWIP_UNUSED_ARG(vjcomp);
mimil	0:308f83189a3f	1311	LWIP_UNUSED_ARG(cidcomp);
mimil	0:308f83189a3f	1312	LWIP_UNUSED_ARG(maxcid);
mimil	0:308f83189a3f	1313	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
mimil	0:308f83189a3f	1314
mimil	0:308f83189a3f	1315	return 0;
mimil	0:308f83189a3f	1316	}
mimil	0:308f83189a3f	1317
mimil	0:308f83189a3f	1318	/*
mimil	0:308f83189a3f	1319	* pppifNetifInit - netif init callback
mimil	0:308f83189a3f	1320	*/
mimil	0:308f83189a3f	1321	static err_t
mimil	0:308f83189a3f	1322	pppifNetifInit(struct netif *netif)
mimil	0:308f83189a3f	1323	{
mimil	0:308f83189a3f	1324	netif->name[0] = 'p';
mimil	0:308f83189a3f	1325	netif->name[1] = 'p';
mimil	0:308f83189a3f	1326	netif->output = pppifOutput;
mimil	0:308f83189a3f	1327	netif->mtu = pppMTU((int)(size_t)netif->state);
mimil	0:308f83189a3f	1328	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
mimil	0:308f83189a3f	1329	#if LWIP_NETIF_HOSTNAME
mimil	0:308f83189a3f	1330	/* @todo: Initialize interface hostname */
mimil	0:308f83189a3f	1331	/* netif_set_hostname(netif, "lwip"); */
mimil	0:308f83189a3f	1332	#endif /* LWIP_NETIF_HOSTNAME */
mimil	0:308f83189a3f	1333	return ERR_OK;
mimil	0:308f83189a3f	1334	}
mimil	0:308f83189a3f	1335
mimil	0:308f83189a3f	1336
mimil	0:308f83189a3f	1337	/*
mimil	0:308f83189a3f	1338	* sifup - Config the interface up and enable IP packets to pass.
mimil	0:308f83189a3f	1339	*/
mimil	0:308f83189a3f	1340	int
mimil	0:308f83189a3f	1341	sifup(int pd)
mimil	0:308f83189a3f	1342	{
mimil	0:308f83189a3f	1343	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	1344	int st = 1;
mimil	0:308f83189a3f	1345
mimil	0:308f83189a3f	1346	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mimil	0:308f83189a3f	1347	st = 0;
mimil	0:308f83189a3f	1348	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mimil	0:308f83189a3f	1349	} else {
mimil	0:308f83189a3f	1350	netif_remove(&pc->netif);
mimil	0:308f83189a3f	1351	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
mimil	0:308f83189a3f	1352	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
mimil	0:308f83189a3f	1353	netif_set_up(&pc->netif);
mimil	0:308f83189a3f	1354	pc->if_up = 1;
mimil	0:308f83189a3f	1355	pc->errCode = PPPERR_NONE;
mimil	0:308f83189a3f	1356
mimil	0:308f83189a3f	1357	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
mimil	0:308f83189a3f	1358	if (pc->linkStatusCB) {
mimil	0:308f83189a3f	1359	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
mimil	0:308f83189a3f	1360	}
mimil	0:308f83189a3f	1361	} else {
mimil	0:308f83189a3f	1362	st = 0;
mimil	0:308f83189a3f	1363	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
mimil	0:308f83189a3f	1364	}
mimil	0:308f83189a3f	1365	}
mimil	0:308f83189a3f	1366
mimil	0:308f83189a3f	1367	return st;
mimil	0:308f83189a3f	1368	}
mimil	0:308f83189a3f	1369
mimil	0:308f83189a3f	1370	/*
mimil	0:308f83189a3f	1371	* sifnpmode - Set the mode for handling packets for a given NP.
mimil	0:308f83189a3f	1372	*/
mimil	0:308f83189a3f	1373	int
mimil	0:308f83189a3f	1374	sifnpmode(int u, int proto, enum NPmode mode)
mimil	0:308f83189a3f	1375	{
mimil	0:308f83189a3f	1376	LWIP_UNUSED_ARG(u);
mimil	0:308f83189a3f	1377	LWIP_UNUSED_ARG(proto);
mimil	0:308f83189a3f	1378	LWIP_UNUSED_ARG(mode);
mimil	0:308f83189a3f	1379	return 0;
mimil	0:308f83189a3f	1380	}
mimil	0:308f83189a3f	1381
mimil	0:308f83189a3f	1382	/*
mimil	0:308f83189a3f	1383	* sifdown - Config the interface down and disable IP.
mimil	0:308f83189a3f	1384	*/
mimil	0:308f83189a3f	1385	int
mimil	0:308f83189a3f	1386	sifdown(int pd)
mimil	0:308f83189a3f	1387	{
mimil	0:308f83189a3f	1388	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	1389	int st = 1;
mimil	0:308f83189a3f	1390
mimil	0:308f83189a3f	1391	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mimil	0:308f83189a3f	1392	st = 0;
mimil	0:308f83189a3f	1393	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
mimil	0:308f83189a3f	1394	} else {
mimil	0:308f83189a3f	1395	pc->if_up = 0;
mimil	0:308f83189a3f	1396	/* make sure the netif status callback is called */
mimil	0:308f83189a3f	1397	netif_set_down(&pc->netif);
mimil	0:308f83189a3f	1398	netif_remove(&pc->netif);
mimil	0:308f83189a3f	1399	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
mimil	0:308f83189a3f	1400	if (pc->linkStatusCB) {
mimil	0:308f83189a3f	1401	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
mimil	0:308f83189a3f	1402	}
mimil	0:308f83189a3f	1403	}
mimil	0:308f83189a3f	1404	return st;
mimil	0:308f83189a3f	1405	}
mimil	0:308f83189a3f	1406
mimil	0:308f83189a3f	1407	/**
mimil	0:308f83189a3f	1408	* sifaddr - Config the interface IP addresses and netmask.
mimil	0:308f83189a3f	1409	* @param pd Interface unit ???
mimil	0:308f83189a3f	1410	* @param o Our IP address ???
mimil	0:308f83189a3f	1411	* @param h His IP address ???
mimil	0:308f83189a3f	1412	* @param m IP subnet mask ???
mimil	0:308f83189a3f	1413	* @param ns1 Primary DNS
mimil	0:308f83189a3f	1414	* @param ns2 Secondary DNS
mimil	0:308f83189a3f	1415	*/
mimil	0:308f83189a3f	1416	int
mimil	0:308f83189a3f	1417	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
mimil	0:308f83189a3f	1418	{
mimil	0:308f83189a3f	1419	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	1420	int st = 1;
mimil	0:308f83189a3f	1421
mimil	0:308f83189a3f	1422	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mimil	0:308f83189a3f	1423	st = 0;
mimil	0:308f83189a3f	1424	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mimil	0:308f83189a3f	1425	} else {
mimil	0:308f83189a3f	1426	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
mimil	0:308f83189a3f	1427	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
mimil	0:308f83189a3f	1428	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
mimil	0:308f83189a3f	1429	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
mimil	0:308f83189a3f	1430	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
mimil	0:308f83189a3f	1431	}
mimil	0:308f83189a3f	1432	return st;
mimil	0:308f83189a3f	1433	}
mimil	0:308f83189a3f	1434
mimil	0:308f83189a3f	1435	/**
mimil	0:308f83189a3f	1436	* cifaddr - Clear the interface IP addresses, and delete routes
mimil	0:308f83189a3f	1437	* through the interface if possible.
mimil	0:308f83189a3f	1438	* @param pd Interface unit ???
mimil	0:308f83189a3f	1439	* @param o Our IP address ???
mimil	0:308f83189a3f	1440	* @param h IP broadcast address ???
mimil	0:308f83189a3f	1441	*/
mimil	0:308f83189a3f	1442	int
mimil	0:308f83189a3f	1443	cifaddr( int pd, u32_t o, u32_t h)
mimil	0:308f83189a3f	1444	{
mimil	0:308f83189a3f	1445	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	1446	int st = 1;
mimil	0:308f83189a3f	1447
mimil	0:308f83189a3f	1448	LWIP_UNUSED_ARG(o);
mimil	0:308f83189a3f	1449	LWIP_UNUSED_ARG(h);
mimil	0:308f83189a3f	1450	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mimil	0:308f83189a3f	1451	st = 0;
mimil	0:308f83189a3f	1452	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mimil	0:308f83189a3f	1453	} else {
mimil	0:308f83189a3f	1454	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
mimil	0:308f83189a3f	1455	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
mimil	0:308f83189a3f	1456	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
mimil	0:308f83189a3f	1457	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
mimil	0:308f83189a3f	1458	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
mimil	0:308f83189a3f	1459	}
mimil	0:308f83189a3f	1460	return st;
mimil	0:308f83189a3f	1461	}
mimil	0:308f83189a3f	1462
mimil	0:308f83189a3f	1463	/*
mimil	0:308f83189a3f	1464	* sifdefaultroute - assign a default route through the address given.
mimil	0:308f83189a3f	1465	*/
mimil	0:308f83189a3f	1466	int
mimil	0:308f83189a3f	1467	sifdefaultroute(int pd, u32_t l, u32_t g)
mimil	0:308f83189a3f	1468	{
mimil	0:308f83189a3f	1469	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	1470	int st = 1;
mimil	0:308f83189a3f	1471
mimil	0:308f83189a3f	1472	LWIP_UNUSED_ARG(l);
mimil	0:308f83189a3f	1473	LWIP_UNUSED_ARG(g);
mimil	0:308f83189a3f	1474
mimil	0:308f83189a3f	1475	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mimil	0:308f83189a3f	1476	st = 0;
mimil	0:308f83189a3f	1477	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mimil	0:308f83189a3f	1478	} else {
mimil	0:308f83189a3f	1479	netif_set_default(&pc->netif);
mimil	0:308f83189a3f	1480	}
mimil	0:308f83189a3f	1481
mimil	0:308f83189a3f	1482	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
mimil	0:308f83189a3f	1483
mimil	0:308f83189a3f	1484	return st;
mimil	0:308f83189a3f	1485	}
mimil	0:308f83189a3f	1486
mimil	0:308f83189a3f	1487	/*
mimil	0:308f83189a3f	1488	* cifdefaultroute - delete a default route through the address given.
mimil	0:308f83189a3f	1489	*/
mimil	0:308f83189a3f	1490	int
mimil	0:308f83189a3f	1491	cifdefaultroute(int pd, u32_t l, u32_t g)
mimil	0:308f83189a3f	1492	{
mimil	0:308f83189a3f	1493	PPPControl *pc = &pppControl[pd];
mimil	0:308f83189a3f	1494	int st = 1;
mimil	0:308f83189a3f	1495
mimil	0:308f83189a3f	1496	LWIP_UNUSED_ARG(l);
mimil	0:308f83189a3f	1497	LWIP_UNUSED_ARG(g);
mimil	0:308f83189a3f	1498
mimil	0:308f83189a3f	1499	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mimil	0:308f83189a3f	1500	st = 0;
mimil	0:308f83189a3f	1501	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mimil	0:308f83189a3f	1502	} else {
mimil	0:308f83189a3f	1503	netif_set_default(NULL);
mimil	0:308f83189a3f	1504	}
mimil	0:308f83189a3f	1505
mimil	0:308f83189a3f	1506	return st;
mimil	0:308f83189a3f	1507	}
mimil	0:308f83189a3f	1508
mimil	0:308f83189a3f	1509	/**********************************/
mimil	0:308f83189a3f	1510	/* LOCAL FUNCTION DEFINITIONS */
mimil	0:308f83189a3f	1511	/**********************************/
mimil	0:308f83189a3f	1512
mimil	0:308f83189a3f	1513	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
mimil	0:308f83189a3f	1514	/* The main PPP process function. This implements the state machine according
mimil	0:308f83189a3f	1515	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
mimil	0:308f83189a3f	1516	static void
mimil	0:308f83189a3f	1517	pppInputThread(void *arg)
mimil	0:308f83189a3f	1518	{
mimil	0:308f83189a3f	1519	int count;
mimil	0:308f83189a3f	1520	PPPControlRx *pcrx = arg;
mimil	0:308f83189a3f	1521
mimil	0:308f83189a3f	1522	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
mimil	0:308f83189a3f	1523	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
mimil	0:308f83189a3f	1524	if(count > 0) {
mimil	0:308f83189a3f	1525	pppInProc(pcrx, pcrx->rxbuf, count);
mimil	0:308f83189a3f	1526	} else {
mimil	0:308f83189a3f	1527	/* nothing received, give other tasks a chance to run */
mimil	0:308f83189a3f	1528	sys_msleep(1);
mimil	0:308f83189a3f	1529	}
mimil	0:308f83189a3f	1530	}
mimil	0:308f83189a3f	1531	}
mimil	0:308f83189a3f	1532	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
mimil	0:308f83189a3f	1533
mimil	0:308f83189a3f	1534	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	1535
mimil	0:308f83189a3f	1536	void
mimil	0:308f83189a3f	1537	pppOverEthernetInitFailed(int pd)
mimil	0:308f83189a3f	1538	{
mimil	0:308f83189a3f	1539	PPPControl* pc;
mimil	0:308f83189a3f	1540
mimil	0:308f83189a3f	1541	pppHup(pd);
mimil	0:308f83189a3f	1542	pppStop(pd);
mimil	0:308f83189a3f	1543
mimil	0:308f83189a3f	1544	pc = &pppControl[pd];
mimil	0:308f83189a3f	1545	pppoe_destroy(&pc->netif);
mimil	0:308f83189a3f	1546	pc->openFlag = 0;
mimil	0:308f83189a3f	1547
mimil	0:308f83189a3f	1548	if(pc->linkStatusCB) {
mimil	0:308f83189a3f	1549	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
mimil	0:308f83189a3f	1550	}
mimil	0:308f83189a3f	1551	}
mimil	0:308f83189a3f	1552
mimil	0:308f83189a3f	1553	static void
mimil	0:308f83189a3f	1554	pppOverEthernetLinkStatusCB(int pd, int up)
mimil	0:308f83189a3f	1555	{
mimil	0:308f83189a3f	1556	if(up) {
mimil	0:308f83189a3f	1557	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
mimil	0:308f83189a3f	1558	pppStart(pd);
mimil	0:308f83189a3f	1559	} else {
mimil	0:308f83189a3f	1560	pppOverEthernetInitFailed(pd);
mimil	0:308f83189a3f	1561	}
mimil	0:308f83189a3f	1562	}
mimil	0:308f83189a3f	1563	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	1564
mimil	0:308f83189a3f	1565	struct pbuf *
mimil	0:308f83189a3f	1566	pppSingleBuf(struct pbuf *p)
mimil	0:308f83189a3f	1567	{
mimil	0:308f83189a3f	1568	struct pbuf q, b;
mimil	0:308f83189a3f	1569	u_char *pl;
mimil	0:308f83189a3f	1570
mimil	0:308f83189a3f	1571	if(p->tot_len == p->len) {
mimil	0:308f83189a3f	1572	return p;
mimil	0:308f83189a3f	1573	}
mimil	0:308f83189a3f	1574
mimil	0:308f83189a3f	1575	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
mimil	0:308f83189a3f	1576	if(!q) {
mimil	0:308f83189a3f	1577	PPPDEBUG(LOG_ERR,
mimil	0:308f83189a3f	1578	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
mimil	0:308f83189a3f	1579	return p; /* live dangerously */
mimil	0:308f83189a3f	1580	}
mimil	0:308f83189a3f	1581
mimil	0:308f83189a3f	1582	for(b = p, pl = (u_char *) q->payload; b != NULL; b = b->next) {
mimil	0:308f83189a3f	1583	MEMCPY(pl, b->payload, b->len);
mimil	0:308f83189a3f	1584	pl += b->len;
mimil	0:308f83189a3f	1585	}
mimil	0:308f83189a3f	1586
mimil	0:308f83189a3f	1587	pbuf_free(p);
mimil	0:308f83189a3f	1588
mimil	0:308f83189a3f	1589	return q;
mimil	0:308f83189a3f	1590	}
mimil	0:308f83189a3f	1591
mimil	0:308f83189a3f	1592	struct pppInputHeader {
mimil	0:308f83189a3f	1593	int unit;
mimil	0:308f83189a3f	1594	u16_t proto;
mimil	0:308f83189a3f	1595	};
mimil	0:308f83189a3f	1596
mimil	0:308f83189a3f	1597	/*
mimil	0:308f83189a3f	1598	* Pass the processed input packet to the appropriate handler.
mimil	0:308f83189a3f	1599	* This function and all handlers run in the context of the tcpip_thread
mimil	0:308f83189a3f	1600	*/
mimil	0:308f83189a3f	1601	static void
mimil	0:308f83189a3f	1602	pppInput(void *arg)
mimil	0:308f83189a3f	1603	{
mimil	0:308f83189a3f	1604	struct pbuf nb = (struct pbuf )arg;
mimil	0:308f83189a3f	1605	u16_t protocol;
mimil	0:308f83189a3f	1606	int pd;
mimil	0:308f83189a3f	1607
mimil	0:308f83189a3f	1608	pd = ((struct pppInputHeader *)nb->payload)->unit;
mimil	0:308f83189a3f	1609	protocol = ((struct pppInputHeader *)nb->payload)->proto;
mimil	0:308f83189a3f	1610
mimil	0:308f83189a3f	1611	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
mimil	0:308f83189a3f	1612	LWIP_ASSERT("pbuf_header failed\n", 0);
mimil	0:308f83189a3f	1613	goto drop;
mimil	0:308f83189a3f	1614	}
mimil	0:308f83189a3f	1615
mimil	0:308f83189a3f	1616	LINK_STATS_INC(link.recv);
mimil	0:308f83189a3f	1617	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
mimil	0:308f83189a3f	1618	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
mimil	0:308f83189a3f	1619
mimil	0:308f83189a3f	1620	/*
mimil	0:308f83189a3f	1621	* Toss all non-LCP packets unless LCP is OPEN.
mimil	0:308f83189a3f	1622	* Until we get past the authentication phase, toss all packets
mimil	0:308f83189a3f	1623	* except LCP, LQR and authentication packets.
mimil	0:308f83189a3f	1624	*/
mimil	0:308f83189a3f	1625	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
mimil	0:308f83189a3f	1626	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
mimil	0:308f83189a3f	1627	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
mimil	0:308f83189a3f	1628	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
mimil	0:308f83189a3f	1629	goto drop;
mimil	0:308f83189a3f	1630	}
mimil	0:308f83189a3f	1631	}
mimil	0:308f83189a3f	1632
mimil	0:308f83189a3f	1633	switch(protocol) {
mimil	0:308f83189a3f	1634	case PPP_VJC_COMP: /* VJ compressed TCP */
mimil	0:308f83189a3f	1635	#if PPPOS_SUPPORT && VJ_SUPPORT
mimil	0:308f83189a3f	1636	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
mimil	0:308f83189a3f	1637	/*
mimil	0:308f83189a3f	1638	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
mimil	0:308f83189a3f	1639	* pass the result to IP.
mimil	0:308f83189a3f	1640	*/
mimil	0:308f83189a3f	1641	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
mimil	0:308f83189a3f	1642	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
mimil	0:308f83189a3f	1643	return;
mimil	0:308f83189a3f	1644	}
mimil	0:308f83189a3f	1645	/* Something's wrong so drop it. */
mimil	0:308f83189a3f	1646	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
mimil	0:308f83189a3f	1647	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
mimil	0:308f83189a3f	1648	/* No handler for this protocol so drop the packet. */
mimil	0:308f83189a3f	1649	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
mimil	0:308f83189a3f	1650	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
mimil	0:308f83189a3f	1651	break;
mimil	0:308f83189a3f	1652
mimil	0:308f83189a3f	1653	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
mimil	0:308f83189a3f	1654	#if PPPOS_SUPPORT && VJ_SUPPORT
mimil	0:308f83189a3f	1655	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
mimil	0:308f83189a3f	1656	/*
mimil	0:308f83189a3f	1657	* Process the TCP/IP header for VJ header compression and then pass
mimil	0:308f83189a3f	1658	* the packet to IP.
mimil	0:308f83189a3f	1659	*/
mimil	0:308f83189a3f	1660	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
mimil	0:308f83189a3f	1661	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
mimil	0:308f83189a3f	1662	return;
mimil	0:308f83189a3f	1663	}
mimil	0:308f83189a3f	1664	/* Something's wrong so drop it. */
mimil	0:308f83189a3f	1665	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
mimil	0:308f83189a3f	1666	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
mimil	0:308f83189a3f	1667	/* No handler for this protocol so drop the packet. */
mimil	0:308f83189a3f	1668	PPPDEBUG(LOG_INFO,
mimil	0:308f83189a3f	1669	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
mimil	0:308f83189a3f	1670	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
mimil	0:308f83189a3f	1671	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
mimil	0:308f83189a3f	1672	break;
mimil	0:308f83189a3f	1673
mimil	0:308f83189a3f	1674	case PPP_IP: /* Internet Protocol */
mimil	0:308f83189a3f	1675	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
mimil	0:308f83189a3f	1676	if (pppControl[pd].netif.input) {
mimil	0:308f83189a3f	1677	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
mimil	0:308f83189a3f	1678	return;
mimil	0:308f83189a3f	1679	}
mimil	0:308f83189a3f	1680	break;
mimil	0:308f83189a3f	1681
mimil	0:308f83189a3f	1682	default: {
mimil	0:308f83189a3f	1683	struct protent *protp;
mimil	0:308f83189a3f	1684	int i;
mimil	0:308f83189a3f	1685
mimil	0:308f83189a3f	1686	/*
mimil	0:308f83189a3f	1687	* Upcall the proper protocol input routine.
mimil	0:308f83189a3f	1688	*/
mimil	0:308f83189a3f	1689	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
mimil	0:308f83189a3f	1690	if (protp->protocol == protocol && protp->enabled_flag) {
mimil	0:308f83189a3f	1691	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
mimil	0:308f83189a3f	1692	nb = pppSingleBuf(nb);
mimil	0:308f83189a3f	1693	(protp->input)(pd, (u_char )nb->payload, nb->len);
mimil	0:308f83189a3f	1694	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
mimil	0:308f83189a3f	1695	goto out;
mimil	0:308f83189a3f	1696	}
mimil	0:308f83189a3f	1697	}
mimil	0:308f83189a3f	1698
mimil	0:308f83189a3f	1699	/* No handler for this protocol so reject the packet. */
mimil	0:308f83189a3f	1700	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
mimil	0:308f83189a3f	1701	if (pbuf_header(nb, sizeof(protocol))) {
mimil	0:308f83189a3f	1702	LWIP_ASSERT("pbuf_header failed\n", 0);
mimil	0:308f83189a3f	1703	goto drop;
mimil	0:308f83189a3f	1704	}
mimil	0:308f83189a3f	1705	#if BYTE_ORDER == LITTLE_ENDIAN
mimil	0:308f83189a3f	1706	protocol = htons(protocol);
mimil	0:308f83189a3f	1707	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
mimil	0:308f83189a3f	1708	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
mimil	0:308f83189a3f	1709	lcp_sprotrej(pd, (u_char *)nb->payload, nb->len);
mimil	0:308f83189a3f	1710	}
mimil	0:308f83189a3f	1711	break;
mimil	0:308f83189a3f	1712	}
mimil	0:308f83189a3f	1713
mimil	0:308f83189a3f	1714	drop:
mimil	0:308f83189a3f	1715	LINK_STATS_INC(link.drop);
mimil	0:308f83189a3f	1716	snmp_inc_ifindiscards(&pppControl[pd].netif);
mimil	0:308f83189a3f	1717
mimil	0:308f83189a3f	1718	out:
mimil	0:308f83189a3f	1719	pbuf_free(nb);
mimil	0:308f83189a3f	1720	return;
mimil	0:308f83189a3f	1721	}
mimil	0:308f83189a3f	1722
mimil	0:308f83189a3f	1723	#if PPPOS_SUPPORT
mimil	0:308f83189a3f	1724	/*
mimil	0:308f83189a3f	1725	* Drop the input packet.
mimil	0:308f83189a3f	1726	*/
mimil	0:308f83189a3f	1727	static void
mimil	0:308f83189a3f	1728	pppDrop(PPPControlRx *pcrx)
mimil	0:308f83189a3f	1729	{
mimil	0:308f83189a3f	1730	if (pcrx->inHead != NULL) {
mimil	0:308f83189a3f	1731	#if 0
mimil	0:308f83189a3f	1732	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
mimil	0:308f83189a3f	1733	#endif
mimil	0:308f83189a3f	1734	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
mimil	0:308f83189a3f	1735	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
mimil	0:308f83189a3f	1736	pbuf_free(pcrx->inTail);
mimil	0:308f83189a3f	1737	}
mimil	0:308f83189a3f	1738	pbuf_free(pcrx->inHead);
mimil	0:308f83189a3f	1739	pcrx->inHead = NULL;
mimil	0:308f83189a3f	1740	pcrx->inTail = NULL;
mimil	0:308f83189a3f	1741	}
mimil	0:308f83189a3f	1742	#if VJ_SUPPORT
mimil	0:308f83189a3f	1743	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
mimil	0:308f83189a3f	1744	#endif /* VJ_SUPPORT */
mimil	0:308f83189a3f	1745
mimil	0:308f83189a3f	1746	LINK_STATS_INC(link.drop);
mimil	0:308f83189a3f	1747	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
mimil	0:308f83189a3f	1748	}
mimil	0:308f83189a3f	1749
mimil	0:308f83189a3f	1750	/** Pass received raw characters to PPPoS to be decoded. This function is
mimil	0:308f83189a3f	1751	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
mimil	0:308f83189a3f	1752	*
mimil	0:308f83189a3f	1753	* @param pd PPP descriptor index, returned by pppOpen()
mimil	0:308f83189a3f	1754	* @param data received data
mimil	0:308f83189a3f	1755	* @param len length of received data
mimil	0:308f83189a3f	1756	*/
mimil	0:308f83189a3f	1757	void
mimil	0:308f83189a3f	1758	pppos_input(int pd, u_char* data, int len)
mimil	0:308f83189a3f	1759	{
mimil	0:308f83189a3f	1760	pppInProc(&pppControl[pd].rx, data, len);
mimil	0:308f83189a3f	1761	}
mimil	0:308f83189a3f	1762
mimil	0:308f83189a3f	1763	/**
mimil	0:308f83189a3f	1764	* Process a received octet string.
mimil	0:308f83189a3f	1765	*/
mimil	0:308f83189a3f	1766	static void
mimil	0:308f83189a3f	1767	pppInProc(PPPControlRx pcrx, u_char s, int l)
mimil	0:308f83189a3f	1768	{
mimil	0:308f83189a3f	1769	struct pbuf *nextNBuf;
mimil	0:308f83189a3f	1770	u_char curChar;
mimil	0:308f83189a3f	1771	u_char escaped;
mimil	0:308f83189a3f	1772	SYS_ARCH_DECL_PROTECT(lev);
mimil	0:308f83189a3f	1773
mimil	0:308f83189a3f	1774	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
mimil	0:308f83189a3f	1775	while (l-- > 0) {
mimil	0:308f83189a3f	1776	curChar = *s++;
mimil	0:308f83189a3f	1777
mimil	0:308f83189a3f	1778	SYS_ARCH_PROTECT(lev);
mimil	0:308f83189a3f	1779	escaped = ESCAPE_P(pcrx->inACCM, curChar);
mimil	0:308f83189a3f	1780	SYS_ARCH_UNPROTECT(lev);
mimil	0:308f83189a3f	1781	/* Handle special characters. */
mimil	0:308f83189a3f	1782	if (escaped) {
mimil	0:308f83189a3f	1783	/* Check for escape sequences. */
mimil	0:308f83189a3f	1784	/* XXX Note that this does not handle an escaped 0x5d character which
mimil	0:308f83189a3f	1785	* would appear as an escape character. Since this is an ASCII ']'
mimil	0:308f83189a3f	1786	* and there is no reason that I know of to escape it, I won't complicate
mimil	0:308f83189a3f	1787	* the code to handle this case. GLL */
mimil	0:308f83189a3f	1788	if (curChar == PPP_ESCAPE) {
mimil	0:308f83189a3f	1789	pcrx->inEscaped = 1;
mimil	0:308f83189a3f	1790	/* Check for the flag character. */
mimil	0:308f83189a3f	1791	} else if (curChar == PPP_FLAG) {
mimil	0:308f83189a3f	1792	/* If this is just an extra flag character, ignore it. */
mimil	0:308f83189a3f	1793	if (pcrx->inState <= PDADDRESS) {
mimil	0:308f83189a3f	1794	/* ignore it */;
mimil	0:308f83189a3f	1795	/* If we haven't received the packet header, drop what has come in. */
mimil	0:308f83189a3f	1796	} else if (pcrx->inState < PDDATA) {
mimil	0:308f83189a3f	1797	PPPDEBUG(LOG_WARNING,
mimil	0:308f83189a3f	1798	("pppInProc[%d]: Dropping incomplete packet %d\n",
mimil	0:308f83189a3f	1799	pcrx->pd, pcrx->inState));
mimil	0:308f83189a3f	1800	LINK_STATS_INC(link.lenerr);
mimil	0:308f83189a3f	1801	pppDrop(pcrx);
mimil	0:308f83189a3f	1802	/* If the fcs is invalid, drop the packet. */
mimil	0:308f83189a3f	1803	} else if (pcrx->inFCS != PPP_GOODFCS) {
mimil	0:308f83189a3f	1804	PPPDEBUG(LOG_INFO,
mimil	0:308f83189a3f	1805	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
mimil	0:308f83189a3f	1806	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
mimil	0:308f83189a3f	1807	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
mimil	0:308f83189a3f	1808	LINK_STATS_INC(link.chkerr);
mimil	0:308f83189a3f	1809	pppDrop(pcrx);
mimil	0:308f83189a3f	1810	/* Otherwise it's a good packet so pass it on. */
mimil	0:308f83189a3f	1811	} else {
mimil	0:308f83189a3f	1812	/* Trim off the checksum. */
mimil	0:308f83189a3f	1813	if(pcrx->inTail->len >= 2) {
mimil	0:308f83189a3f	1814	pcrx->inTail->len -= 2;
mimil	0:308f83189a3f	1815
mimil	0:308f83189a3f	1816	pcrx->inTail->tot_len = pcrx->inTail->len;
mimil	0:308f83189a3f	1817	if (pcrx->inTail != pcrx->inHead) {
mimil	0:308f83189a3f	1818	pbuf_cat(pcrx->inHead, pcrx->inTail);
mimil	0:308f83189a3f	1819	}
mimil	0:308f83189a3f	1820	} else {
mimil	0:308f83189a3f	1821	pcrx->inTail->tot_len = pcrx->inTail->len;
mimil	0:308f83189a3f	1822	if (pcrx->inTail != pcrx->inHead) {
mimil	0:308f83189a3f	1823	pbuf_cat(pcrx->inHead, pcrx->inTail);
mimil	0:308f83189a3f	1824	}
mimil	0:308f83189a3f	1825
mimil	0:308f83189a3f	1826	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
mimil	0:308f83189a3f	1827	}
mimil	0:308f83189a3f	1828
mimil	0:308f83189a3f	1829	/* Dispatch the packet thereby consuming it. */
mimil	0:308f83189a3f	1830	#if PPP_INPROC_MULTITHREADED
mimil	0:308f83189a3f	1831	if(tcpip_callback_with_block(pppInput, pcrx->inHead, 0) != ERR_OK) {
mimil	0:308f83189a3f	1832	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
mimil	0:308f83189a3f	1833	pbuf_free(pcrx->inHead);
mimil	0:308f83189a3f	1834	LINK_STATS_INC(link.drop);
mimil	0:308f83189a3f	1835	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
mimil	0:308f83189a3f	1836	}
mimil	0:308f83189a3f	1837	#else /* PPP_INPROC_MULTITHREADED */
mimil	0:308f83189a3f	1838	pppInput(pcrx->inHead);
mimil	0:308f83189a3f	1839	#endif /* PPP_INPROC_MULTITHREADED */
mimil	0:308f83189a3f	1840	pcrx->inHead = NULL;
mimil	0:308f83189a3f	1841	pcrx->inTail = NULL;
mimil	0:308f83189a3f	1842	}
mimil	0:308f83189a3f	1843
mimil	0:308f83189a3f	1844	/* Prepare for a new packet. */
mimil	0:308f83189a3f	1845	pcrx->inFCS = PPP_INITFCS;
mimil	0:308f83189a3f	1846	pcrx->inState = PDADDRESS;
mimil	0:308f83189a3f	1847	pcrx->inEscaped = 0;
mimil	0:308f83189a3f	1848	/* Other characters are usually control characters that may have
mimil	0:308f83189a3f	1849	* been inserted by the physical layer so here we just drop them. */
mimil	0:308f83189a3f	1850	} else {
mimil	0:308f83189a3f	1851	PPPDEBUG(LOG_WARNING,
mimil	0:308f83189a3f	1852	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
mimil	0:308f83189a3f	1853	}
mimil	0:308f83189a3f	1854	/* Process other characters. */
mimil	0:308f83189a3f	1855	} else {
mimil	0:308f83189a3f	1856	/* Unencode escaped characters. */
mimil	0:308f83189a3f	1857	if (pcrx->inEscaped) {
mimil	0:308f83189a3f	1858	pcrx->inEscaped = 0;
mimil	0:308f83189a3f	1859	curChar ^= PPP_TRANS;
mimil	0:308f83189a3f	1860	}
mimil	0:308f83189a3f	1861
mimil	0:308f83189a3f	1862	/* Process character relative to current state. */
mimil	0:308f83189a3f	1863	switch(pcrx->inState) {
mimil	0:308f83189a3f	1864	case PDIDLE: /* Idle state - waiting. */
mimil	0:308f83189a3f	1865	/* Drop the character if it's not 0xff
mimil	0:308f83189a3f	1866	* we would have processed a flag character above. */
mimil	0:308f83189a3f	1867	if (curChar != PPP_ALLSTATIONS) {
mimil	0:308f83189a3f	1868	break;
mimil	0:308f83189a3f	1869	}
mimil	0:308f83189a3f	1870
mimil	0:308f83189a3f	1871	/* Fall through */
mimil	0:308f83189a3f	1872	case PDSTART: /* Process start flag. */
mimil	0:308f83189a3f	1873	/* Prepare for a new packet. */
mimil	0:308f83189a3f	1874	pcrx->inFCS = PPP_INITFCS;
mimil	0:308f83189a3f	1875
mimil	0:308f83189a3f	1876	/* Fall through */
mimil	0:308f83189a3f	1877	case PDADDRESS: /* Process address field. */
mimil	0:308f83189a3f	1878	if (curChar == PPP_ALLSTATIONS) {
mimil	0:308f83189a3f	1879	pcrx->inState = PDCONTROL;
mimil	0:308f83189a3f	1880	break;
mimil	0:308f83189a3f	1881	}
mimil	0:308f83189a3f	1882	/* Else assume compressed address and control fields so
mimil	0:308f83189a3f	1883	* fall through to get the protocol... */
mimil	0:308f83189a3f	1884	case PDCONTROL: /* Process control field. */
mimil	0:308f83189a3f	1885	/* If we don't get a valid control code, restart. */
mimil	0:308f83189a3f	1886	if (curChar == PPP_UI) {
mimil	0:308f83189a3f	1887	pcrx->inState = PDPROTOCOL1;
mimil	0:308f83189a3f	1888	break;
mimil	0:308f83189a3f	1889	}
mimil	0:308f83189a3f	1890	#if 0
mimil	0:308f83189a3f	1891	else {
mimil	0:308f83189a3f	1892	PPPDEBUG(LOG_WARNING,
mimil	0:308f83189a3f	1893	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
mimil	0:308f83189a3f	1894	pcrx->inState = PDSTART;
mimil	0:308f83189a3f	1895	}
mimil	0:308f83189a3f	1896	#endif
mimil	0:308f83189a3f	1897	case PDPROTOCOL1: /* Process protocol field 1. */
mimil	0:308f83189a3f	1898	/* If the lower bit is set, this is the end of the protocol
mimil	0:308f83189a3f	1899	* field. */
mimil	0:308f83189a3f	1900	if (curChar & 1) {
mimil	0:308f83189a3f	1901	pcrx->inProtocol = curChar;
mimil	0:308f83189a3f	1902	pcrx->inState = PDDATA;
mimil	0:308f83189a3f	1903	} else {
mimil	0:308f83189a3f	1904	pcrx->inProtocol = (u_int)curChar << 8;
mimil	0:308f83189a3f	1905	pcrx->inState = PDPROTOCOL2;
mimil	0:308f83189a3f	1906	}
mimil	0:308f83189a3f	1907	break;
mimil	0:308f83189a3f	1908	case PDPROTOCOL2: /* Process protocol field 2. */
mimil	0:308f83189a3f	1909	pcrx->inProtocol \|= curChar;
mimil	0:308f83189a3f	1910	pcrx->inState = PDDATA;
mimil	0:308f83189a3f	1911	break;
mimil	0:308f83189a3f	1912	case PDDATA: /* Process data byte. */
mimil	0:308f83189a3f	1913	/* Make space to receive processed data. */
mimil	0:308f83189a3f	1914	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
mimil	0:308f83189a3f	1915	if(pcrx->inTail) {
mimil	0:308f83189a3f	1916	pcrx->inTail->tot_len = pcrx->inTail->len;
mimil	0:308f83189a3f	1917	if (pcrx->inTail != pcrx->inHead) {
mimil	0:308f83189a3f	1918	pbuf_cat(pcrx->inHead, pcrx->inTail);
mimil	0:308f83189a3f	1919	}
mimil	0:308f83189a3f	1920	}
mimil	0:308f83189a3f	1921	/* If we haven't started a packet, we need a packet header. */
mimil	0:308f83189a3f	1922	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
mimil	0:308f83189a3f	1923	if (nextNBuf == NULL) {
mimil	0:308f83189a3f	1924	/* No free buffers. Drop the input packet and let the
mimil	0:308f83189a3f	1925	* higher layers deal with it. Continue processing
mimil	0:308f83189a3f	1926	* the received pbuf chain in case a new packet starts. */
mimil	0:308f83189a3f	1927	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
mimil	0:308f83189a3f	1928	LINK_STATS_INC(link.memerr);
mimil	0:308f83189a3f	1929	pppDrop(pcrx);
mimil	0:308f83189a3f	1930	pcrx->inState = PDSTART; /* Wait for flag sequence. */
mimil	0:308f83189a3f	1931	break;
mimil	0:308f83189a3f	1932	}
mimil	0:308f83189a3f	1933	if (pcrx->inHead == NULL) {
mimil	0:308f83189a3f	1934	struct pppInputHeader pih = (struct pppInputHeader )nextNBuf->payload;
mimil	0:308f83189a3f	1935
mimil	0:308f83189a3f	1936	pih->unit = pcrx->pd;
mimil	0:308f83189a3f	1937	pih->proto = pcrx->inProtocol;
mimil	0:308f83189a3f	1938
mimil	0:308f83189a3f	1939	nextNBuf->len += sizeof(*pih);
mimil	0:308f83189a3f	1940
mimil	0:308f83189a3f	1941	pcrx->inHead = nextNBuf;
mimil	0:308f83189a3f	1942	}
mimil	0:308f83189a3f	1943	pcrx->inTail = nextNBuf;
mimil	0:308f83189a3f	1944	}
mimil	0:308f83189a3f	1945	/* Load character into buffer. */
mimil	0:308f83189a3f	1946	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
mimil	0:308f83189a3f	1947	break;
mimil	0:308f83189a3f	1948	}
mimil	0:308f83189a3f	1949
mimil	0:308f83189a3f	1950	/* update the frame check sequence number. */
mimil	0:308f83189a3f	1951	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
mimil	0:308f83189a3f	1952	}
mimil	0:308f83189a3f	1953	} /* while (l-- > 0), all bytes processed */
mimil	0:308f83189a3f	1954
mimil	0:308f83189a3f	1955	avRandomize();
mimil	0:308f83189a3f	1956	}
mimil	0:308f83189a3f	1957	#endif /* PPPOS_SUPPORT */
mimil	0:308f83189a3f	1958
mimil	0:308f83189a3f	1959	#if PPPOE_SUPPORT
mimil	0:308f83189a3f	1960	void
mimil	0:308f83189a3f	1961	pppInProcOverEthernet(int pd, struct pbuf *pb)
mimil	0:308f83189a3f	1962	{
mimil	0:308f83189a3f	1963	struct pppInputHeader *pih;
mimil	0:308f83189a3f	1964	u16_t inProtocol;
mimil	0:308f83189a3f	1965
mimil	0:308f83189a3f	1966	if(pb->len < sizeof(inProtocol)) {
mimil	0:308f83189a3f	1967	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
mimil	0:308f83189a3f	1968	goto drop;
mimil	0:308f83189a3f	1969	}
mimil	0:308f83189a3f	1970
mimil	0:308f83189a3f	1971	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
mimil	0:308f83189a3f	1972
mimil	0:308f83189a3f	1973	/* make room for pppInputHeader - should not fail */
mimil	0:308f83189a3f	1974	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
mimil	0:308f83189a3f	1975	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
mimil	0:308f83189a3f	1976	goto drop;
mimil	0:308f83189a3f	1977	}
mimil	0:308f83189a3f	1978
mimil	0:308f83189a3f	1979	pih = pb->payload;
mimil	0:308f83189a3f	1980
mimil	0:308f83189a3f	1981	pih->unit = pd;
mimil	0:308f83189a3f	1982	pih->proto = inProtocol;
mimil	0:308f83189a3f	1983
mimil	0:308f83189a3f	1984	/* Dispatch the packet thereby consuming it. */
mimil	0:308f83189a3f	1985	pppInput(pb);
mimil	0:308f83189a3f	1986	return;
mimil	0:308f83189a3f	1987
mimil	0:308f83189a3f	1988	drop:
mimil	0:308f83189a3f	1989	LINK_STATS_INC(link.drop);
mimil	0:308f83189a3f	1990	snmp_inc_ifindiscards(&pppControl[pd].netif);
mimil	0:308f83189a3f	1991	pbuf_free(pb);
mimil	0:308f83189a3f	1992	return;
mimil	0:308f83189a3f	1993	}
mimil	0:308f83189a3f	1994	#endif /* PPPOE_SUPPORT */
mimil	0:308f83189a3f	1995
mimil	0:308f83189a3f	1996	#if LWIP_NETIF_STATUS_CALLBACK
mimil	0:308f83189a3f	1997	/** Set the status callback of a PPP's netif
mimil	0:308f83189a3f	1998	*
mimil	0:308f83189a3f	1999	* @param pd The PPP descriptor returned by pppOpen()
mimil	0:308f83189a3f	2000	* @param status_callback pointer to the status callback function
mimil	0:308f83189a3f	2001	*
mimil	0:308f83189a3f	2002	* @see netif_set_status_callback
mimil	0:308f83189a3f	2003	*/
mimil	0:308f83189a3f	2004	void
mimil	0:308f83189a3f	2005	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
mimil	0:308f83189a3f	2006	{
mimil	0:308f83189a3f	2007	netif_set_status_callback(&pppControl[pd].netif, status_callback);
mimil	0:308f83189a3f	2008	}
mimil	0:308f83189a3f	2009	#endif /* LWIP_NETIF_STATUS_CALLBACK */
mimil	0:308f83189a3f	2010
mimil	0:308f83189a3f	2011	#if LWIP_NETIF_LINK_CALLBACK
mimil	0:308f83189a3f	2012	/** Set the link callback of a PPP's netif
mimil	0:308f83189a3f	2013	*
mimil	0:308f83189a3f	2014	* @param pd The PPP descriptor returned by pppOpen()
mimil	0:308f83189a3f	2015	* @param link_callback pointer to the link callback function
mimil	0:308f83189a3f	2016	*
mimil	0:308f83189a3f	2017	* @see netif_set_link_callback
mimil	0:308f83189a3f	2018	*/
mimil	0:308f83189a3f	2019	void
mimil	0:308f83189a3f	2020	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
mimil	0:308f83189a3f	2021	{
mimil	0:308f83189a3f	2022	netif_set_link_callback(&pppControl[pd].netif, link_callback);
mimil	0:308f83189a3f	2023	}
mimil	0:308f83189a3f	2024	#endif /* LWIP_NETIF_LINK_CALLBACK */
mimil	0:308f83189a3f	2025
mimil	0:308f83189a3f	2026	#endif /* PPP_SUPPORT */

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Type:	Library
Created:	06 Sep 2011
Imports:	40
Forks:	0
Commits:	1
Dependents:	1
Dependencies:	0
Followers:	1

lwip/netif/ppp/ppp.c@0:308f83189a3f, 2011-09-06 (annotated)

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