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netif/ppp/ppp.c@0:51ac1d130fd4, 2012-06-22 (annotated)

Committer:: mbed_official
Date:: Fri Jun 22 09:25:39 2012 +0000
Revision:: 0:51ac1d130fd4
Child:: 4:f71f5d9d5846

Initial import from lwip-1.4.0: http://download.savannah.gnu.org/releases/lwip/lwip-1.4.0.zip

Who changed what in which revision?

User	Revision	Line number	New contents of line
mbed_official	0:51ac1d130fd4	1	/*****************************************************************************
mbed_official	0:51ac1d130fd4	2	* ppp.c - Network Point to Point Protocol program file.
mbed_official	0:51ac1d130fd4	3	*
mbed_official	0:51ac1d130fd4	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
mbed_official	0:51ac1d130fd4	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
mbed_official	0:51ac1d130fd4	6	*
mbed_official	0:51ac1d130fd4	7	* The authors hereby grant permission to use, copy, modify, distribute,
mbed_official	0:51ac1d130fd4	8	* and license this software and its documentation for any purpose, provided
mbed_official	0:51ac1d130fd4	9	* that existing copyright notices are retained in all copies and that this
mbed_official	0:51ac1d130fd4	10	* notice and the following disclaimer are included verbatim in any
mbed_official	0:51ac1d130fd4	11	* distributions. No written agreement, license, or royalty fee is required
mbed_official	0:51ac1d130fd4	12	* for any of the authorized uses.
mbed_official	0:51ac1d130fd4	13	*
mbed_official	0:51ac1d130fd4	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
mbed_official	0:51ac1d130fd4	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
mbed_official	0:51ac1d130fd4	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
mbed_official	0:51ac1d130fd4	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
mbed_official	0:51ac1d130fd4	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
mbed_official	0:51ac1d130fd4	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
mbed_official	0:51ac1d130fd4	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
mbed_official	0:51ac1d130fd4	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
mbed_official	0:51ac1d130fd4	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
mbed_official	0:51ac1d130fd4	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official	0:51ac1d130fd4	24	*
mbed_official	0:51ac1d130fd4	25	******************************************************************************
mbed_official	0:51ac1d130fd4	26	* REVISION HISTORY
mbed_official	0:51ac1d130fd4	27	*
mbed_official	0:51ac1d130fd4	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
mbed_official	0:51ac1d130fd4	29	* Ported to lwIP.
mbed_official	0:51ac1d130fd4	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
mbed_official	0:51ac1d130fd4	31	* Original.
mbed_official	0:51ac1d130fd4	32	*****************************************************************************/
mbed_official	0:51ac1d130fd4	33
mbed_official	0:51ac1d130fd4	34	/*
mbed_official	0:51ac1d130fd4	35	* ppp_defs.h - PPP definitions.
mbed_official	0:51ac1d130fd4	36	*
mbed_official	0:51ac1d130fd4	37	* if_pppvar.h - private structures and declarations for PPP.
mbed_official	0:51ac1d130fd4	38	*
mbed_official	0:51ac1d130fd4	39	* Copyright (c) 1994 The Australian National University.
mbed_official	0:51ac1d130fd4	40	* All rights reserved.
mbed_official	0:51ac1d130fd4	41	*
mbed_official	0:51ac1d130fd4	42	* Permission to use, copy, modify, and distribute this software and its
mbed_official	0:51ac1d130fd4	43	* documentation is hereby granted, provided that the above copyright
mbed_official	0:51ac1d130fd4	44	* notice appears in all copies. This software is provided without any
mbed_official	0:51ac1d130fd4	45	* warranty, express or implied. The Australian National University
mbed_official	0:51ac1d130fd4	46	* makes no representations about the suitability of this software for
mbed_official	0:51ac1d130fd4	47	* any purpose.
mbed_official	0:51ac1d130fd4	48	*
mbed_official	0:51ac1d130fd4	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
mbed_official	0:51ac1d130fd4	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
mbed_official	0:51ac1d130fd4	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
mbed_official	0:51ac1d130fd4	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
mbed_official	0:51ac1d130fd4	53	* OF SUCH DAMAGE.
mbed_official	0:51ac1d130fd4	54	*
mbed_official	0:51ac1d130fd4	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
mbed_official	0:51ac1d130fd4	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
mbed_official	0:51ac1d130fd4	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
mbed_official	0:51ac1d130fd4	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
mbed_official	0:51ac1d130fd4	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
mbed_official	0:51ac1d130fd4	60	* OR MODIFICATIONS.
mbed_official	0:51ac1d130fd4	61	*/
mbed_official	0:51ac1d130fd4	62
mbed_official	0:51ac1d130fd4	63	/*
mbed_official	0:51ac1d130fd4	64	* if_ppp.h - Point-to-Point Protocol definitions.
mbed_official	0:51ac1d130fd4	65	*
mbed_official	0:51ac1d130fd4	66	* Copyright (c) 1989 Carnegie Mellon University.
mbed_official	0:51ac1d130fd4	67	* All rights reserved.
mbed_official	0:51ac1d130fd4	68	*
mbed_official	0:51ac1d130fd4	69	* Redistribution and use in source and binary forms are permitted
mbed_official	0:51ac1d130fd4	70	* provided that the above copyright notice and this paragraph are
mbed_official	0:51ac1d130fd4	71	* duplicated in all such forms and that any documentation,
mbed_official	0:51ac1d130fd4	72	* advertising materials, and other materials related to such
mbed_official	0:51ac1d130fd4	73	* distribution and use acknowledge that the software was developed
mbed_official	0:51ac1d130fd4	74	* by Carnegie Mellon University. The name of the
mbed_official	0:51ac1d130fd4	75	* University may not be used to endorse or promote products derived
mbed_official	0:51ac1d130fd4	76	* from this software without specific prior written permission.
mbed_official	0:51ac1d130fd4	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
mbed_official	0:51ac1d130fd4	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
mbed_official	0:51ac1d130fd4	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
mbed_official	0:51ac1d130fd4	80	*/
mbed_official	0:51ac1d130fd4	81
mbed_official	0:51ac1d130fd4	82	#include "lwip/opt.h"
mbed_official	0:51ac1d130fd4	83
mbed_official	0:51ac1d130fd4	84	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
mbed_official	0:51ac1d130fd4	85
mbed_official	0:51ac1d130fd4	86	#include "lwip/ip.h" /* for ip_input() */
mbed_official	0:51ac1d130fd4	87
mbed_official	0:51ac1d130fd4	88	#include "ppp.h"
mbed_official	0:51ac1d130fd4	89	#include "pppdebug.h"
mbed_official	0:51ac1d130fd4	90
mbed_official	0:51ac1d130fd4	91	#include "randm.h"
mbed_official	0:51ac1d130fd4	92	#include "fsm.h"
mbed_official	0:51ac1d130fd4	93	#if PAP_SUPPORT
mbed_official	0:51ac1d130fd4	94	#include "pap.h"
mbed_official	0:51ac1d130fd4	95	#endif /* PAP_SUPPORT */
mbed_official	0:51ac1d130fd4	96	#if CHAP_SUPPORT
mbed_official	0:51ac1d130fd4	97	#include "chap.h"
mbed_official	0:51ac1d130fd4	98	#endif /* CHAP_SUPPORT */
mbed_official	0:51ac1d130fd4	99	#include "ipcp.h"
mbed_official	0:51ac1d130fd4	100	#include "lcp.h"
mbed_official	0:51ac1d130fd4	101	#include "magic.h"
mbed_official	0:51ac1d130fd4	102	#include "auth.h"
mbed_official	0:51ac1d130fd4	103	#if VJ_SUPPORT
mbed_official	0:51ac1d130fd4	104	#include "vj.h"
mbed_official	0:51ac1d130fd4	105	#endif /* VJ_SUPPORT */
mbed_official	0:51ac1d130fd4	106	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	107	#include "netif/ppp_oe.h"
mbed_official	0:51ac1d130fd4	108	#endif /* PPPOE_SUPPORT */
mbed_official	0:51ac1d130fd4	109
mbed_official	0:51ac1d130fd4	110	#include "lwip/tcpip.h"
mbed_official	0:51ac1d130fd4	111	#include "lwip/api.h"
mbed_official	0:51ac1d130fd4	112	#include "lwip/snmp.h"
mbed_official	0:51ac1d130fd4	113
mbed_official	0:51ac1d130fd4	114	#include <string.h>
mbed_official	0:51ac1d130fd4	115
mbed_official	0:51ac1d130fd4	116	/*************************/
mbed_official	0:51ac1d130fd4	117	/* LOCAL DEFINITIONS */
mbed_official	0:51ac1d130fd4	118	/*************************/
mbed_official	0:51ac1d130fd4	119
mbed_official	0:51ac1d130fd4	120	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
mbed_official	0:51ac1d130fd4	121	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
mbed_official	0:51ac1d130fd4	122	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
mbed_official	0:51ac1d130fd4	123	*/
mbed_official	0:51ac1d130fd4	124	#ifndef PPP_INPROC_MULTITHREADED
mbed_official	0:51ac1d130fd4	125	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
mbed_official	0:51ac1d130fd4	126	#endif
mbed_official	0:51ac1d130fd4	127
mbed_official	0:51ac1d130fd4	128	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
mbed_official	0:51ac1d130fd4	129	* Default is 0: call pppos_input() for received raw characters, charcater
mbed_official	0:51ac1d130fd4	130	* reception is up to the port */
mbed_official	0:51ac1d130fd4	131	#ifndef PPP_INPROC_OWNTHREAD
mbed_official	0:51ac1d130fd4	132	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
mbed_official	0:51ac1d130fd4	133	#endif
mbed_official	0:51ac1d130fd4	134
mbed_official	0:51ac1d130fd4	135	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
mbed_official	0:51ac1d130fd4	136	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
mbed_official	0:51ac1d130fd4	137	#endif
mbed_official	0:51ac1d130fd4	138
mbed_official	0:51ac1d130fd4	139	/*
mbed_official	0:51ac1d130fd4	140	* The basic PPP frame.
mbed_official	0:51ac1d130fd4	141	*/
mbed_official	0:51ac1d130fd4	142	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
mbed_official	0:51ac1d130fd4	143	#define PPP_CONTROL(p) (((u_char *)(p))[1])
mbed_official	0:51ac1d130fd4	144	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
mbed_official	0:51ac1d130fd4	145
mbed_official	0:51ac1d130fd4	146	/* PPP packet parser states. Current state indicates operation yet to be
mbed_official	0:51ac1d130fd4	147	* completed. */
mbed_official	0:51ac1d130fd4	148	typedef enum {
mbed_official	0:51ac1d130fd4	149	PDIDLE = 0, /* Idle state - waiting. */
mbed_official	0:51ac1d130fd4	150	PDSTART, /* Process start flag. */
mbed_official	0:51ac1d130fd4	151	PDADDRESS, /* Process address field. */
mbed_official	0:51ac1d130fd4	152	PDCONTROL, /* Process control field. */
mbed_official	0:51ac1d130fd4	153	PDPROTOCOL1, /* Process protocol field 1. */
mbed_official	0:51ac1d130fd4	154	PDPROTOCOL2, /* Process protocol field 2. */
mbed_official	0:51ac1d130fd4	155	PDDATA /* Process data byte. */
mbed_official	0:51ac1d130fd4	156	} PPPDevStates;
mbed_official	0:51ac1d130fd4	157
mbed_official	0:51ac1d130fd4	158	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
mbed_official	0:51ac1d130fd4	159
mbed_official	0:51ac1d130fd4	160	/************************/
mbed_official	0:51ac1d130fd4	161	/* LOCAL DATA TYPES */
mbed_official	0:51ac1d130fd4	162	/************************/
mbed_official	0:51ac1d130fd4	163
mbed_official	0:51ac1d130fd4	164	/** RX buffer size: this may be configured smaller! */
mbed_official	0:51ac1d130fd4	165	#ifndef PPPOS_RX_BUFSIZE
mbed_official	0:51ac1d130fd4	166	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
mbed_official	0:51ac1d130fd4	167	#endif
mbed_official	0:51ac1d130fd4	168
mbed_official	0:51ac1d130fd4	169	typedef struct PPPControlRx_s {
mbed_official	0:51ac1d130fd4	170	/** unit number / ppp descriptor */
mbed_official	0:51ac1d130fd4	171	int pd;
mbed_official	0:51ac1d130fd4	172	/** the rx file descriptor */
mbed_official	0:51ac1d130fd4	173	sio_fd_t fd;
mbed_official	0:51ac1d130fd4	174	/** receive buffer - encoded data is stored here */
mbed_official	0:51ac1d130fd4	175	u_char rxbuf[PPPOS_RX_BUFSIZE];
mbed_official	0:51ac1d130fd4	176
mbed_official	0:51ac1d130fd4	177	/* The input packet. */
mbed_official	0:51ac1d130fd4	178	struct pbuf inHead, inTail;
mbed_official	0:51ac1d130fd4	179
mbed_official	0:51ac1d130fd4	180	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	181	u16_t inProtocol; /* The input protocol code. */
mbed_official	0:51ac1d130fd4	182	u16_t inFCS; /* Input Frame Check Sequence value. */
mbed_official	0:51ac1d130fd4	183	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	184	PPPDevStates inState; /* The input process state. */
mbed_official	0:51ac1d130fd4	185	char inEscaped; /* Escape next character. */
mbed_official	0:51ac1d130fd4	186	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
mbed_official	0:51ac1d130fd4	187	} PPPControlRx;
mbed_official	0:51ac1d130fd4	188
mbed_official	0:51ac1d130fd4	189	/*
mbed_official	0:51ac1d130fd4	190	* PPP interface control block.
mbed_official	0:51ac1d130fd4	191	*/
mbed_official	0:51ac1d130fd4	192	typedef struct PPPControl_s {
mbed_official	0:51ac1d130fd4	193	PPPControlRx rx;
mbed_official	0:51ac1d130fd4	194	char openFlag; /* True when in use. */
mbed_official	0:51ac1d130fd4	195	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	196	struct netif *ethif;
mbed_official	0:51ac1d130fd4	197	struct pppoe_softc *pppoe_sc;
mbed_official	0:51ac1d130fd4	198	#endif /* PPPOE_SUPPORT */
mbed_official	0:51ac1d130fd4	199	int if_up; /* True when the interface is up. */
mbed_official	0:51ac1d130fd4	200	int errCode; /* Code indicating why interface is down. */
mbed_official	0:51ac1d130fd4	201	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	202	sio_fd_t fd; /* File device ID of port. */
mbed_official	0:51ac1d130fd4	203	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	204	u16_t mtu; /* Peer's mru */
mbed_official	0:51ac1d130fd4	205	int pcomp; /* Does peer accept protocol compression? */
mbed_official	0:51ac1d130fd4	206	int accomp; /* Does peer accept addr/ctl compression? */
mbed_official	0:51ac1d130fd4	207	u_long lastXMit; /* Time of last transmission. */
mbed_official	0:51ac1d130fd4	208	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
mbed_official	0:51ac1d130fd4	209	#if PPPOS_SUPPORT && VJ_SUPPORT
mbed_official	0:51ac1d130fd4	210	int vjEnabled; /* Flag indicating VJ compression enabled. */
mbed_official	0:51ac1d130fd4	211	struct vjcompress vjComp; /* Van Jacobson compression header. */
mbed_official	0:51ac1d130fd4	212	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed_official	0:51ac1d130fd4	213
mbed_official	0:51ac1d130fd4	214	struct netif netif;
mbed_official	0:51ac1d130fd4	215
mbed_official	0:51ac1d130fd4	216	struct ppp_addrs addrs;
mbed_official	0:51ac1d130fd4	217
mbed_official	0:51ac1d130fd4	218	void (linkStatusCB)(void ctx, int errCode, void *arg);
mbed_official	0:51ac1d130fd4	219	void *linkStatusCtx;
mbed_official	0:51ac1d130fd4	220
mbed_official	0:51ac1d130fd4	221	} PPPControl;
mbed_official	0:51ac1d130fd4	222
mbed_official	0:51ac1d130fd4	223
mbed_official	0:51ac1d130fd4	224	/*
mbed_official	0:51ac1d130fd4	225	* Ioctl definitions.
mbed_official	0:51ac1d130fd4	226	*/
mbed_official	0:51ac1d130fd4	227
mbed_official	0:51ac1d130fd4	228	struct npioctl {
mbed_official	0:51ac1d130fd4	229	int protocol; /* PPP procotol, e.g. PPP_IP */
mbed_official	0:51ac1d130fd4	230	enum NPmode mode;
mbed_official	0:51ac1d130fd4	231	};
mbed_official	0:51ac1d130fd4	232
mbed_official	0:51ac1d130fd4	233
mbed_official	0:51ac1d130fd4	234
mbed_official	0:51ac1d130fd4	235	/***********************************/
mbed_official	0:51ac1d130fd4	236	/* LOCAL FUNCTION DECLARATIONS */
mbed_official	0:51ac1d130fd4	237	/***********************************/
mbed_official	0:51ac1d130fd4	238	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	239	#if PPP_INPROC_OWNTHREAD
mbed_official	0:51ac1d130fd4	240	static void pppInputThread(void *arg);
mbed_official	0:51ac1d130fd4	241	#endif /* PPP_INPROC_OWNTHREAD */
mbed_official	0:51ac1d130fd4	242	static void pppDrop(PPPControlRx *pcrx);
mbed_official	0:51ac1d130fd4	243	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
mbed_official	0:51ac1d130fd4	244	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	245
mbed_official	0:51ac1d130fd4	246
mbed_official	0:51ac1d130fd4	247	/******************************/
mbed_official	0:51ac1d130fd4	248	/* PUBLIC DATA STRUCTURES */
mbed_official	0:51ac1d130fd4	249	/******************************/
mbed_official	0:51ac1d130fd4	250	u_long subnetMask;
mbed_official	0:51ac1d130fd4	251
mbed_official	0:51ac1d130fd4	252	static PPPControl pppControl[NUM_PPP]; /* The PPP interface control blocks. */
mbed_official	0:51ac1d130fd4	253
mbed_official	0:51ac1d130fd4	254	/*
mbed_official	0:51ac1d130fd4	255	* PPP Data Link Layer "protocol" table.
mbed_official	0:51ac1d130fd4	256	* One entry per supported protocol.
mbed_official	0:51ac1d130fd4	257	* The last entry must be NULL.
mbed_official	0:51ac1d130fd4	258	*/
mbed_official	0:51ac1d130fd4	259	struct protent *ppp_protocols[] = {
mbed_official	0:51ac1d130fd4	260	&lcp_protent,
mbed_official	0:51ac1d130fd4	261	#if PAP_SUPPORT
mbed_official	0:51ac1d130fd4	262	&pap_protent,
mbed_official	0:51ac1d130fd4	263	#endif /* PAP_SUPPORT */
mbed_official	0:51ac1d130fd4	264	#if CHAP_SUPPORT
mbed_official	0:51ac1d130fd4	265	&chap_protent,
mbed_official	0:51ac1d130fd4	266	#endif /* CHAP_SUPPORT */
mbed_official	0:51ac1d130fd4	267	#if CBCP_SUPPORT
mbed_official	0:51ac1d130fd4	268	&cbcp_protent,
mbed_official	0:51ac1d130fd4	269	#endif /* CBCP_SUPPORT */
mbed_official	0:51ac1d130fd4	270	&ipcp_protent,
mbed_official	0:51ac1d130fd4	271	#if CCP_SUPPORT
mbed_official	0:51ac1d130fd4	272	&ccp_protent,
mbed_official	0:51ac1d130fd4	273	#endif /* CCP_SUPPORT */
mbed_official	0:51ac1d130fd4	274	NULL
mbed_official	0:51ac1d130fd4	275	};
mbed_official	0:51ac1d130fd4	276
mbed_official	0:51ac1d130fd4	277
mbed_official	0:51ac1d130fd4	278	/*
mbed_official	0:51ac1d130fd4	279	* Buffers for outgoing packets. This must be accessed only from the appropriate
mbed_official	0:51ac1d130fd4	280	* PPP task so that it doesn't need to be protected to avoid collisions.
mbed_official	0:51ac1d130fd4	281	*/
mbed_official	0:51ac1d130fd4	282	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN];
mbed_official	0:51ac1d130fd4	283
mbed_official	0:51ac1d130fd4	284
mbed_official	0:51ac1d130fd4	285	/*****************************/
mbed_official	0:51ac1d130fd4	286	/* LOCAL DATA STRUCTURES */
mbed_official	0:51ac1d130fd4	287	/*****************************/
mbed_official	0:51ac1d130fd4	288
mbed_official	0:51ac1d130fd4	289	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	290	/*
mbed_official	0:51ac1d130fd4	291	* FCS lookup table as calculated by genfcstab.
mbed_official	0:51ac1d130fd4	292	* @todo: smaller, slower implementation for lower memory footprint?
mbed_official	0:51ac1d130fd4	293	*/
mbed_official	0:51ac1d130fd4	294	static const u_short fcstab[256] = {
mbed_official	0:51ac1d130fd4	295	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
mbed_official	0:51ac1d130fd4	296	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
mbed_official	0:51ac1d130fd4	297	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
mbed_official	0:51ac1d130fd4	298	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
mbed_official	0:51ac1d130fd4	299	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
mbed_official	0:51ac1d130fd4	300	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
mbed_official	0:51ac1d130fd4	301	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
mbed_official	0:51ac1d130fd4	302	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
mbed_official	0:51ac1d130fd4	303	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
mbed_official	0:51ac1d130fd4	304	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
mbed_official	0:51ac1d130fd4	305	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
mbed_official	0:51ac1d130fd4	306	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
mbed_official	0:51ac1d130fd4	307	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
mbed_official	0:51ac1d130fd4	308	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
mbed_official	0:51ac1d130fd4	309	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
mbed_official	0:51ac1d130fd4	310	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
mbed_official	0:51ac1d130fd4	311	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
mbed_official	0:51ac1d130fd4	312	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
mbed_official	0:51ac1d130fd4	313	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
mbed_official	0:51ac1d130fd4	314	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
mbed_official	0:51ac1d130fd4	315	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
mbed_official	0:51ac1d130fd4	316	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
mbed_official	0:51ac1d130fd4	317	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
mbed_official	0:51ac1d130fd4	318	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
mbed_official	0:51ac1d130fd4	319	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
mbed_official	0:51ac1d130fd4	320	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
mbed_official	0:51ac1d130fd4	321	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
mbed_official	0:51ac1d130fd4	322	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
mbed_official	0:51ac1d130fd4	323	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
mbed_official	0:51ac1d130fd4	324	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
mbed_official	0:51ac1d130fd4	325	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
mbed_official	0:51ac1d130fd4	326	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
mbed_official	0:51ac1d130fd4	327	};
mbed_official	0:51ac1d130fd4	328
mbed_official	0:51ac1d130fd4	329	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
mbed_official	0:51ac1d130fd4	330	* to select the specific bit for a character. */
mbed_official	0:51ac1d130fd4	331	static u_char pppACCMMask[] = {
mbed_official	0:51ac1d130fd4	332	0x01,
mbed_official	0:51ac1d130fd4	333	0x02,
mbed_official	0:51ac1d130fd4	334	0x04,
mbed_official	0:51ac1d130fd4	335	0x08,
mbed_official	0:51ac1d130fd4	336	0x10,
mbed_official	0:51ac1d130fd4	337	0x20,
mbed_official	0:51ac1d130fd4	338	0x40,
mbed_official	0:51ac1d130fd4	339	0x80
mbed_official	0:51ac1d130fd4	340	};
mbed_official	0:51ac1d130fd4	341
mbed_official	0:51ac1d130fd4	342	/** Wake up the task blocked in reading from serial line (if any) */
mbed_official	0:51ac1d130fd4	343	static void
mbed_official	0:51ac1d130fd4	344	pppRecvWakeup(int pd)
mbed_official	0:51ac1d130fd4	345	{
mbed_official	0:51ac1d130fd4	346	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
mbed_official	0:51ac1d130fd4	347	if (pppControl[pd].openFlag != 0) {
mbed_official	0:51ac1d130fd4	348	sio_read_abort(pppControl[pd].fd);
mbed_official	0:51ac1d130fd4	349	}
mbed_official	0:51ac1d130fd4	350	}
mbed_official	0:51ac1d130fd4	351	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	352
mbed_official	0:51ac1d130fd4	353	void
mbed_official	0:51ac1d130fd4	354	pppLinkTerminated(int pd)
mbed_official	0:51ac1d130fd4	355	{
mbed_official	0:51ac1d130fd4	356	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
mbed_official	0:51ac1d130fd4	357
mbed_official	0:51ac1d130fd4	358	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	359	if (pppControl[pd].ethif) {
mbed_official	0:51ac1d130fd4	360	pppoe_disconnect(pppControl[pd].pppoe_sc);
mbed_official	0:51ac1d130fd4	361	} else
mbed_official	0:51ac1d130fd4	362	#endif /* PPPOE_SUPPORT */
mbed_official	0:51ac1d130fd4	363	{
mbed_official	0:51ac1d130fd4	364	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	365	PPPControl* pc;
mbed_official	0:51ac1d130fd4	366	pppRecvWakeup(pd);
mbed_official	0:51ac1d130fd4	367	pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	368
mbed_official	0:51ac1d130fd4	369	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
mbed_official	0:51ac1d130fd4	370	if (pc->linkStatusCB) {
mbed_official	0:51ac1d130fd4	371	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
mbed_official	0:51ac1d130fd4	372	}
mbed_official	0:51ac1d130fd4	373
mbed_official	0:51ac1d130fd4	374	pc->openFlag = 0;/**/
mbed_official	0:51ac1d130fd4	375	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	376	}
mbed_official	0:51ac1d130fd4	377	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
mbed_official	0:51ac1d130fd4	378	}
mbed_official	0:51ac1d130fd4	379
mbed_official	0:51ac1d130fd4	380	void
mbed_official	0:51ac1d130fd4	381	pppLinkDown(int pd)
mbed_official	0:51ac1d130fd4	382	{
mbed_official	0:51ac1d130fd4	383	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
mbed_official	0:51ac1d130fd4	384
mbed_official	0:51ac1d130fd4	385	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	386	if (pppControl[pd].ethif) {
mbed_official	0:51ac1d130fd4	387	pppoe_disconnect(pppControl[pd].pppoe_sc);
mbed_official	0:51ac1d130fd4	388	} else
mbed_official	0:51ac1d130fd4	389	#endif /* PPPOE_SUPPORT */
mbed_official	0:51ac1d130fd4	390	{
mbed_official	0:51ac1d130fd4	391	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	392	pppRecvWakeup(pd);
mbed_official	0:51ac1d130fd4	393	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	394	}
mbed_official	0:51ac1d130fd4	395	}
mbed_official	0:51ac1d130fd4	396
mbed_official	0:51ac1d130fd4	397	/** Initiate LCP open request */
mbed_official	0:51ac1d130fd4	398	static void
mbed_official	0:51ac1d130fd4	399	pppStart(int pd)
mbed_official	0:51ac1d130fd4	400	{
mbed_official	0:51ac1d130fd4	401	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
mbed_official	0:51ac1d130fd4	402	lcp_lowerup(pd);
mbed_official	0:51ac1d130fd4	403	lcp_open(pd); /* Start protocol */
mbed_official	0:51ac1d130fd4	404	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
mbed_official	0:51ac1d130fd4	405	}
mbed_official	0:51ac1d130fd4	406
mbed_official	0:51ac1d130fd4	407	/** LCP close request */
mbed_official	0:51ac1d130fd4	408	static void
mbed_official	0:51ac1d130fd4	409	pppStop(int pd)
mbed_official	0:51ac1d130fd4	410	{
mbed_official	0:51ac1d130fd4	411	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
mbed_official	0:51ac1d130fd4	412	lcp_close(pd, "User request");
mbed_official	0:51ac1d130fd4	413	}
mbed_official	0:51ac1d130fd4	414
mbed_official	0:51ac1d130fd4	415	/** Called when carrier/link is lost */
mbed_official	0:51ac1d130fd4	416	static void
mbed_official	0:51ac1d130fd4	417	pppHup(int pd)
mbed_official	0:51ac1d130fd4	418	{
mbed_official	0:51ac1d130fd4	419	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
mbed_official	0:51ac1d130fd4	420	lcp_lowerdown(pd);
mbed_official	0:51ac1d130fd4	421	link_terminated(pd);
mbed_official	0:51ac1d130fd4	422	}
mbed_official	0:51ac1d130fd4	423
mbed_official	0:51ac1d130fd4	424	/***********************************/
mbed_official	0:51ac1d130fd4	425	/* PUBLIC FUNCTION DEFINITIONS */
mbed_official	0:51ac1d130fd4	426	/***********************************/
mbed_official	0:51ac1d130fd4	427	/* Initialize the PPP subsystem. */
mbed_official	0:51ac1d130fd4	428
mbed_official	0:51ac1d130fd4	429	struct ppp_settings ppp_settings;
mbed_official	0:51ac1d130fd4	430
mbed_official	0:51ac1d130fd4	431	void
mbed_official	0:51ac1d130fd4	432	pppInit(void)
mbed_official	0:51ac1d130fd4	433	{
mbed_official	0:51ac1d130fd4	434	struct protent *protp;
mbed_official	0:51ac1d130fd4	435	int i, j;
mbed_official	0:51ac1d130fd4	436
mbed_official	0:51ac1d130fd4	437	memset(&ppp_settings, 0, sizeof(ppp_settings));
mbed_official	0:51ac1d130fd4	438	ppp_settings.usepeerdns = 1;
mbed_official	0:51ac1d130fd4	439	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
mbed_official	0:51ac1d130fd4	440
mbed_official	0:51ac1d130fd4	441	magicInit();
mbed_official	0:51ac1d130fd4	442
mbed_official	0:51ac1d130fd4	443	subnetMask = PP_HTONL(0xffffff00UL);
mbed_official	0:51ac1d130fd4	444
mbed_official	0:51ac1d130fd4	445	for (i = 0; i < NUM_PPP; i++) {
mbed_official	0:51ac1d130fd4	446	/* Initialize each protocol to the standard option set. */
mbed_official	0:51ac1d130fd4	447	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
mbed_official	0:51ac1d130fd4	448	(*protp->init)(i);
mbed_official	0:51ac1d130fd4	449	}
mbed_official	0:51ac1d130fd4	450	}
mbed_official	0:51ac1d130fd4	451	}
mbed_official	0:51ac1d130fd4	452
mbed_official	0:51ac1d130fd4	453	void
mbed_official	0:51ac1d130fd4	454	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
mbed_official	0:51ac1d130fd4	455	{
mbed_official	0:51ac1d130fd4	456	switch(authType) {
mbed_official	0:51ac1d130fd4	457	case PPPAUTHTYPE_NONE:
mbed_official	0:51ac1d130fd4	458	default:
mbed_official	0:51ac1d130fd4	459	#ifdef LWIP_PPP_STRICT_PAP_REJECT
mbed_official	0:51ac1d130fd4	460	ppp_settings.refuse_pap = 1;
mbed_official	0:51ac1d130fd4	461	#else /* LWIP_PPP_STRICT_PAP_REJECT */
mbed_official	0:51ac1d130fd4	462	/* some providers request pap and accept an empty login/pw */
mbed_official	0:51ac1d130fd4	463	ppp_settings.refuse_pap = 0;
mbed_official	0:51ac1d130fd4	464	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
mbed_official	0:51ac1d130fd4	465	ppp_settings.refuse_chap = 1;
mbed_official	0:51ac1d130fd4	466	break;
mbed_official	0:51ac1d130fd4	467
mbed_official	0:51ac1d130fd4	468	case PPPAUTHTYPE_ANY:
mbed_official	0:51ac1d130fd4	469	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
mbed_official	0:51ac1d130fd4	470	* RFC 1994 says:
mbed_official	0:51ac1d130fd4	471	*
mbed_official	0:51ac1d130fd4	472	* In practice, within or associated with each PPP server, there is a
mbed_official	0:51ac1d130fd4	473	* database which associates "user" names with authentication
mbed_official	0:51ac1d130fd4	474	* information ("secrets"). It is not anticipated that a particular
mbed_official	0:51ac1d130fd4	475	* named user would be authenticated by multiple methods. This would
mbed_official	0:51ac1d130fd4	476	* make the user vulnerable to attacks which negotiate the least secure
mbed_official	0:51ac1d130fd4	477	* method from among a set (such as PAP rather than CHAP). If the same
mbed_official	0:51ac1d130fd4	478	* secret was used, PAP would reveal the secret to be used later with
mbed_official	0:51ac1d130fd4	479	* CHAP.
mbed_official	0:51ac1d130fd4	480	*
mbed_official	0:51ac1d130fd4	481	* Instead, for each user name there should be an indication of exactly
mbed_official	0:51ac1d130fd4	482	* one method used to authenticate that user name. If a user needs to
mbed_official	0:51ac1d130fd4	483	* make use of different authentication methods under different
mbed_official	0:51ac1d130fd4	484	* circumstances, then distinct user names SHOULD be employed, each of
mbed_official	0:51ac1d130fd4	485	* which identifies exactly one authentication method.
mbed_official	0:51ac1d130fd4	486	*
mbed_official	0:51ac1d130fd4	487	*/
mbed_official	0:51ac1d130fd4	488	ppp_settings.refuse_pap = 0;
mbed_official	0:51ac1d130fd4	489	ppp_settings.refuse_chap = 0;
mbed_official	0:51ac1d130fd4	490	break;
mbed_official	0:51ac1d130fd4	491
mbed_official	0:51ac1d130fd4	492	case PPPAUTHTYPE_PAP:
mbed_official	0:51ac1d130fd4	493	ppp_settings.refuse_pap = 0;
mbed_official	0:51ac1d130fd4	494	ppp_settings.refuse_chap = 1;
mbed_official	0:51ac1d130fd4	495	break;
mbed_official	0:51ac1d130fd4	496
mbed_official	0:51ac1d130fd4	497	case PPPAUTHTYPE_CHAP:
mbed_official	0:51ac1d130fd4	498	ppp_settings.refuse_pap = 1;
mbed_official	0:51ac1d130fd4	499	ppp_settings.refuse_chap = 0;
mbed_official	0:51ac1d130fd4	500	break;
mbed_official	0:51ac1d130fd4	501	}
mbed_official	0:51ac1d130fd4	502
mbed_official	0:51ac1d130fd4	503	if(user) {
mbed_official	0:51ac1d130fd4	504	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
mbed_official	0:51ac1d130fd4	505	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
mbed_official	0:51ac1d130fd4	506	} else {
mbed_official	0:51ac1d130fd4	507	ppp_settings.user[0] = '\0';
mbed_official	0:51ac1d130fd4	508	}
mbed_official	0:51ac1d130fd4	509
mbed_official	0:51ac1d130fd4	510	if(passwd) {
mbed_official	0:51ac1d130fd4	511	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
mbed_official	0:51ac1d130fd4	512	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
mbed_official	0:51ac1d130fd4	513	} else {
mbed_official	0:51ac1d130fd4	514	ppp_settings.passwd[0] = '\0';
mbed_official	0:51ac1d130fd4	515	}
mbed_official	0:51ac1d130fd4	516	}
mbed_official	0:51ac1d130fd4	517
mbed_official	0:51ac1d130fd4	518	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	519	/** Open a new PPP connection using the given I/O device.
mbed_official	0:51ac1d130fd4	520	* This initializes the PPP control block but does not
mbed_official	0:51ac1d130fd4	521	* attempt to negotiate the LCP session. If this port
mbed_official	0:51ac1d130fd4	522	* connects to a modem, the modem connection must be
mbed_official	0:51ac1d130fd4	523	* established before calling this.
mbed_official	0:51ac1d130fd4	524	* Return a new PPP connection descriptor on success or
mbed_official	0:51ac1d130fd4	525	* an error code (negative) on failure.
mbed_official	0:51ac1d130fd4	526	*
mbed_official	0:51ac1d130fd4	527	* pppOpen() is directly defined to this function.
mbed_official	0:51ac1d130fd4	528	*/
mbed_official	0:51ac1d130fd4	529	int
mbed_official	0:51ac1d130fd4	530	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
mbed_official	0:51ac1d130fd4	531	{
mbed_official	0:51ac1d130fd4	532	PPPControl *pc;
mbed_official	0:51ac1d130fd4	533	int pd;
mbed_official	0:51ac1d130fd4	534
mbed_official	0:51ac1d130fd4	535	if (linkStatusCB == NULL) {
mbed_official	0:51ac1d130fd4	536	/* PPP is single-threaded: without a callback,
mbed_official	0:51ac1d130fd4	537	* there is no way to know when the link is up. */
mbed_official	0:51ac1d130fd4	538	return PPPERR_PARAM;
mbed_official	0:51ac1d130fd4	539	}
mbed_official	0:51ac1d130fd4	540
mbed_official	0:51ac1d130fd4	541	/* Find a free PPP session descriptor. */
mbed_official	0:51ac1d130fd4	542	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
mbed_official	0:51ac1d130fd4	543
mbed_official	0:51ac1d130fd4	544	if (pd >= NUM_PPP) {
mbed_official	0:51ac1d130fd4	545	pd = PPPERR_OPEN;
mbed_official	0:51ac1d130fd4	546	} else {
mbed_official	0:51ac1d130fd4	547	pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	548	/* @todo: is this correct or do I overwrite something? */
mbed_official	0:51ac1d130fd4	549	memset(pc, 0, sizeof(PPPControl));
mbed_official	0:51ac1d130fd4	550	pc->rx.pd = pd;
mbed_official	0:51ac1d130fd4	551	pc->rx.fd = fd;
mbed_official	0:51ac1d130fd4	552
mbed_official	0:51ac1d130fd4	553	pc->openFlag = 1;
mbed_official	0:51ac1d130fd4	554	pc->fd = fd;
mbed_official	0:51ac1d130fd4	555
mbed_official	0:51ac1d130fd4	556	#if VJ_SUPPORT
mbed_official	0:51ac1d130fd4	557	vj_compress_init(&pc->vjComp);
mbed_official	0:51ac1d130fd4	558	#endif /* VJ_SUPPORT */
mbed_official	0:51ac1d130fd4	559
mbed_official	0:51ac1d130fd4	560	/*
mbed_official	0:51ac1d130fd4	561	* Default the in and out accm so that escape and flag characters
mbed_official	0:51ac1d130fd4	562	* are always escaped.
mbed_official	0:51ac1d130fd4	563	*/
mbed_official	0:51ac1d130fd4	564	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
mbed_official	0:51ac1d130fd4	565	pc->outACCM[15] = 0x60;
mbed_official	0:51ac1d130fd4	566
mbed_official	0:51ac1d130fd4	567	pc->linkStatusCB = linkStatusCB;
mbed_official	0:51ac1d130fd4	568	pc->linkStatusCtx = linkStatusCtx;
mbed_official	0:51ac1d130fd4	569
mbed_official	0:51ac1d130fd4	570	/*
mbed_official	0:51ac1d130fd4	571	* Start the connection and handle incoming events (packet or timeout).
mbed_official	0:51ac1d130fd4	572	*/
mbed_official	0:51ac1d130fd4	573	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
mbed_official	0:51ac1d130fd4	574	pppStart(pd);
mbed_official	0:51ac1d130fd4	575	#if PPP_INPROC_OWNTHREAD
mbed_official	0:51ac1d130fd4	576	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
mbed_official	0:51ac1d130fd4	577	#endif
mbed_official	0:51ac1d130fd4	578	}
mbed_official	0:51ac1d130fd4	579
mbed_official	0:51ac1d130fd4	580	return pd;
mbed_official	0:51ac1d130fd4	581	}
mbed_official	0:51ac1d130fd4	582	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	583
mbed_official	0:51ac1d130fd4	584	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	585	static void pppOverEthernetLinkStatusCB(int pd, int up);
mbed_official	0:51ac1d130fd4	586
mbed_official	0:51ac1d130fd4	587	void
mbed_official	0:51ac1d130fd4	588	pppOverEthernetClose(int pd)
mbed_official	0:51ac1d130fd4	589	{
mbed_official	0:51ac1d130fd4	590	PPPControl* pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	591
mbed_official	0:51ac1d130fd4	592	/* TJL There's no lcp_deinit */
mbed_official	0:51ac1d130fd4	593	lcp_close(pd, NULL);
mbed_official	0:51ac1d130fd4	594
mbed_official	0:51ac1d130fd4	595	pppoe_destroy(&pc->netif);
mbed_official	0:51ac1d130fd4	596	}
mbed_official	0:51ac1d130fd4	597
mbed_official	0:51ac1d130fd4	598	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
mbed_official	0:51ac1d130fd4	599	{
mbed_official	0:51ac1d130fd4	600	PPPControl *pc;
mbed_official	0:51ac1d130fd4	601	int pd;
mbed_official	0:51ac1d130fd4	602
mbed_official	0:51ac1d130fd4	603	LWIP_UNUSED_ARG(service_name);
mbed_official	0:51ac1d130fd4	604	LWIP_UNUSED_ARG(concentrator_name);
mbed_official	0:51ac1d130fd4	605
mbed_official	0:51ac1d130fd4	606	if (linkStatusCB == NULL) {
mbed_official	0:51ac1d130fd4	607	/* PPP is single-threaded: without a callback,
mbed_official	0:51ac1d130fd4	608	* there is no way to know when the link is up. */
mbed_official	0:51ac1d130fd4	609	return PPPERR_PARAM;
mbed_official	0:51ac1d130fd4	610	}
mbed_official	0:51ac1d130fd4	611
mbed_official	0:51ac1d130fd4	612	/* Find a free PPP session descriptor. Critical region? */
mbed_official	0:51ac1d130fd4	613	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
mbed_official	0:51ac1d130fd4	614	if (pd >= NUM_PPP) {
mbed_official	0:51ac1d130fd4	615	pd = PPPERR_OPEN;
mbed_official	0:51ac1d130fd4	616	} else {
mbed_official	0:51ac1d130fd4	617	pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	618	memset(pc, 0, sizeof(PPPControl));
mbed_official	0:51ac1d130fd4	619	pc->openFlag = 1;
mbed_official	0:51ac1d130fd4	620	pc->ethif = ethif;
mbed_official	0:51ac1d130fd4	621
mbed_official	0:51ac1d130fd4	622	pc->linkStatusCB = linkStatusCB;
mbed_official	0:51ac1d130fd4	623	pc->linkStatusCtx = linkStatusCtx;
mbed_official	0:51ac1d130fd4	624
mbed_official	0:51ac1d130fd4	625	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
mbed_official	0:51ac1d130fd4	626	lcp_wantoptions[pd].neg_asyncmap = 0;
mbed_official	0:51ac1d130fd4	627	lcp_wantoptions[pd].neg_pcompression = 0;
mbed_official	0:51ac1d130fd4	628	lcp_wantoptions[pd].neg_accompression = 0;
mbed_official	0:51ac1d130fd4	629
mbed_official	0:51ac1d130fd4	630	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
mbed_official	0:51ac1d130fd4	631	lcp_allowoptions[pd].neg_asyncmap = 0;
mbed_official	0:51ac1d130fd4	632	lcp_allowoptions[pd].neg_pcompression = 0;
mbed_official	0:51ac1d130fd4	633	lcp_allowoptions[pd].neg_accompression = 0;
mbed_official	0:51ac1d130fd4	634
mbed_official	0:51ac1d130fd4	635	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
mbed_official	0:51ac1d130fd4	636	pc->openFlag = 0;
mbed_official	0:51ac1d130fd4	637	return PPPERR_OPEN;
mbed_official	0:51ac1d130fd4	638	}
mbed_official	0:51ac1d130fd4	639
mbed_official	0:51ac1d130fd4	640	pppoe_connect(pc->pppoe_sc);
mbed_official	0:51ac1d130fd4	641	}
mbed_official	0:51ac1d130fd4	642
mbed_official	0:51ac1d130fd4	643	return pd;
mbed_official	0:51ac1d130fd4	644	}
mbed_official	0:51ac1d130fd4	645	#endif /* PPPOE_SUPPORT */
mbed_official	0:51ac1d130fd4	646
mbed_official	0:51ac1d130fd4	647
mbed_official	0:51ac1d130fd4	648	/* Close a PPP connection and release the descriptor.
mbed_official	0:51ac1d130fd4	649	* Any outstanding packets in the queues are dropped.
mbed_official	0:51ac1d130fd4	650	* Return 0 on success, an error code on failure. */
mbed_official	0:51ac1d130fd4	651	int
mbed_official	0:51ac1d130fd4	652	pppClose(int pd)
mbed_official	0:51ac1d130fd4	653	{
mbed_official	0:51ac1d130fd4	654	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	655	int st = 0;
mbed_official	0:51ac1d130fd4	656
mbed_official	0:51ac1d130fd4	657	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
mbed_official	0:51ac1d130fd4	658
mbed_official	0:51ac1d130fd4	659	/* Disconnect */
mbed_official	0:51ac1d130fd4	660	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	661	if(pc->ethif) {
mbed_official	0:51ac1d130fd4	662	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
mbed_official	0:51ac1d130fd4	663	pc->errCode = PPPERR_USER;
mbed_official	0:51ac1d130fd4	664	/* This will leave us at PHASE_DEAD. */
mbed_official	0:51ac1d130fd4	665	pppStop(pd);
mbed_official	0:51ac1d130fd4	666	} else
mbed_official	0:51ac1d130fd4	667	#endif /* PPPOE_SUPPORT */
mbed_official	0:51ac1d130fd4	668	{
mbed_official	0:51ac1d130fd4	669	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	670	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
mbed_official	0:51ac1d130fd4	671	pc->errCode = PPPERR_USER;
mbed_official	0:51ac1d130fd4	672	/* This will leave us at PHASE_DEAD. */
mbed_official	0:51ac1d130fd4	673	pppStop(pd);
mbed_official	0:51ac1d130fd4	674	pppRecvWakeup(pd);
mbed_official	0:51ac1d130fd4	675	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	676	}
mbed_official	0:51ac1d130fd4	677
mbed_official	0:51ac1d130fd4	678	return st;
mbed_official	0:51ac1d130fd4	679	}
mbed_official	0:51ac1d130fd4	680
mbed_official	0:51ac1d130fd4	681	/* This function is called when carrier is lost on the PPP channel. */
mbed_official	0:51ac1d130fd4	682	void
mbed_official	0:51ac1d130fd4	683	pppSigHUP(int pd)
mbed_official	0:51ac1d130fd4	684	{
mbed_official	0:51ac1d130fd4	685	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
mbed_official	0:51ac1d130fd4	686	pppHup(pd);
mbed_official	0:51ac1d130fd4	687	}
mbed_official	0:51ac1d130fd4	688
mbed_official	0:51ac1d130fd4	689	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	690	static void
mbed_official	0:51ac1d130fd4	691	nPut(PPPControl pc, struct pbuf nb)
mbed_official	0:51ac1d130fd4	692	{
mbed_official	0:51ac1d130fd4	693	struct pbuf *b;
mbed_official	0:51ac1d130fd4	694	int c;
mbed_official	0:51ac1d130fd4	695
mbed_official	0:51ac1d130fd4	696	for(b = nb; b != NULL; b = b->next) {
mbed_official	0:51ac1d130fd4	697	if((c = sio_write(pc->fd, b->payload, b->len)) != b->len) {
mbed_official	0:51ac1d130fd4	698	PPPDEBUG(LOG_WARNING,
mbed_official	0:51ac1d130fd4	699	("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));
mbed_official	0:51ac1d130fd4	700	LINK_STATS_INC(link.err);
mbed_official	0:51ac1d130fd4	701	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
mbed_official	0:51ac1d130fd4	702	snmp_inc_ifoutdiscards(&pc->netif);
mbed_official	0:51ac1d130fd4	703	pbuf_free(nb);
mbed_official	0:51ac1d130fd4	704	return;
mbed_official	0:51ac1d130fd4	705	}
mbed_official	0:51ac1d130fd4	706	}
mbed_official	0:51ac1d130fd4	707
mbed_official	0:51ac1d130fd4	708	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
mbed_official	0:51ac1d130fd4	709	snmp_inc_ifoutucastpkts(&pc->netif);
mbed_official	0:51ac1d130fd4	710	pbuf_free(nb);
mbed_official	0:51ac1d130fd4	711	LINK_STATS_INC(link.xmit);
mbed_official	0:51ac1d130fd4	712	}
mbed_official	0:51ac1d130fd4	713
mbed_official	0:51ac1d130fd4	714	/*
mbed_official	0:51ac1d130fd4	715	* pppAppend - append given character to end of given pbuf. If outACCM
mbed_official	0:51ac1d130fd4	716	* is not NULL and the character needs to be escaped, do so.
mbed_official	0:51ac1d130fd4	717	* If pbuf is full, append another.
mbed_official	0:51ac1d130fd4	718	* Return the current pbuf.
mbed_official	0:51ac1d130fd4	719	*/
mbed_official	0:51ac1d130fd4	720	static struct pbuf *
mbed_official	0:51ac1d130fd4	721	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
mbed_official	0:51ac1d130fd4	722	{
mbed_official	0:51ac1d130fd4	723	struct pbuf *tb = nb;
mbed_official	0:51ac1d130fd4	724
mbed_official	0:51ac1d130fd4	725	/* Make sure there is room for the character and an escape code.
mbed_official	0:51ac1d130fd4	726	* Sure we don't quite fill the buffer if the character doesn't
mbed_official	0:51ac1d130fd4	727	* get escaped but is one character worth complicating this? */
mbed_official	0:51ac1d130fd4	728	/* Note: We assume no packet header. */
mbed_official	0:51ac1d130fd4	729	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
mbed_official	0:51ac1d130fd4	730	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
mbed_official	0:51ac1d130fd4	731	if (tb) {
mbed_official	0:51ac1d130fd4	732	nb->next = tb;
mbed_official	0:51ac1d130fd4	733	} else {
mbed_official	0:51ac1d130fd4	734	LINK_STATS_INC(link.memerr);
mbed_official	0:51ac1d130fd4	735	}
mbed_official	0:51ac1d130fd4	736	nb = tb;
mbed_official	0:51ac1d130fd4	737	}
mbed_official	0:51ac1d130fd4	738
mbed_official	0:51ac1d130fd4	739	if (nb) {
mbed_official	0:51ac1d130fd4	740	if (outACCM && ESCAPE_P(*outACCM, c)) {
mbed_official	0:51ac1d130fd4	741	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
mbed_official	0:51ac1d130fd4	742	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
mbed_official	0:51ac1d130fd4	743	} else {
mbed_official	0:51ac1d130fd4	744	((u_char)nb->payload + nb->len++) = c;
mbed_official	0:51ac1d130fd4	745	}
mbed_official	0:51ac1d130fd4	746	}
mbed_official	0:51ac1d130fd4	747
mbed_official	0:51ac1d130fd4	748	return tb;
mbed_official	0:51ac1d130fd4	749	}
mbed_official	0:51ac1d130fd4	750	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	751
mbed_official	0:51ac1d130fd4	752	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	753	static err_t
mbed_official	0:51ac1d130fd4	754	pppifOutputOverEthernet(int pd, struct pbuf *p)
mbed_official	0:51ac1d130fd4	755	{
mbed_official	0:51ac1d130fd4	756	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	757	struct pbuf *pb;
mbed_official	0:51ac1d130fd4	758	u_short protocol = PPP_IP;
mbed_official	0:51ac1d130fd4	759	int i=0;
mbed_official	0:51ac1d130fd4	760	u16_t tot_len;
mbed_official	0:51ac1d130fd4	761
mbed_official	0:51ac1d130fd4	762	/* @todo: try to use pbuf_header() here! */
mbed_official	0:51ac1d130fd4	763	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
mbed_official	0:51ac1d130fd4	764	if(!pb) {
mbed_official	0:51ac1d130fd4	765	LINK_STATS_INC(link.memerr);
mbed_official	0:51ac1d130fd4	766	LINK_STATS_INC(link.proterr);
mbed_official	0:51ac1d130fd4	767	snmp_inc_ifoutdiscards(&pc->netif);
mbed_official	0:51ac1d130fd4	768	return ERR_MEM;
mbed_official	0:51ac1d130fd4	769	}
mbed_official	0:51ac1d130fd4	770
mbed_official	0:51ac1d130fd4	771	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
mbed_official	0:51ac1d130fd4	772
mbed_official	0:51ac1d130fd4	773	pc->lastXMit = sys_jiffies();
mbed_official	0:51ac1d130fd4	774
mbed_official	0:51ac1d130fd4	775	if (!pc->pcomp \|\| protocol > 0xFF) {
mbed_official	0:51ac1d130fd4	776	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
mbed_official	0:51ac1d130fd4	777	}
mbed_official	0:51ac1d130fd4	778	((u_char)pb->payload + i) = protocol & 0xFF;
mbed_official	0:51ac1d130fd4	779
mbed_official	0:51ac1d130fd4	780	pbuf_chain(pb, p);
mbed_official	0:51ac1d130fd4	781	tot_len = pb->tot_len;
mbed_official	0:51ac1d130fd4	782
mbed_official	0:51ac1d130fd4	783	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
mbed_official	0:51ac1d130fd4	784	LINK_STATS_INC(link.err);
mbed_official	0:51ac1d130fd4	785	snmp_inc_ifoutdiscards(&pc->netif);
mbed_official	0:51ac1d130fd4	786	return PPPERR_DEVICE;
mbed_official	0:51ac1d130fd4	787	}
mbed_official	0:51ac1d130fd4	788
mbed_official	0:51ac1d130fd4	789	snmp_add_ifoutoctets(&pc->netif, tot_len);
mbed_official	0:51ac1d130fd4	790	snmp_inc_ifoutucastpkts(&pc->netif);
mbed_official	0:51ac1d130fd4	791	LINK_STATS_INC(link.xmit);
mbed_official	0:51ac1d130fd4	792	return ERR_OK;
mbed_official	0:51ac1d130fd4	793	}
mbed_official	0:51ac1d130fd4	794	#endif /* PPPOE_SUPPORT */
mbed_official	0:51ac1d130fd4	795
mbed_official	0:51ac1d130fd4	796	/* Send a packet on the given connection. */
mbed_official	0:51ac1d130fd4	797	static err_t
mbed_official	0:51ac1d130fd4	798	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
mbed_official	0:51ac1d130fd4	799	{
mbed_official	0:51ac1d130fd4	800	int pd = (int)(size_t)netif->state;
mbed_official	0:51ac1d130fd4	801	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	802	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	803	u_short protocol = PPP_IP;
mbed_official	0:51ac1d130fd4	804	u_int fcsOut = PPP_INITFCS;
mbed_official	0:51ac1d130fd4	805	struct pbuf headMB = NULL, tailMB = NULL, *p;
mbed_official	0:51ac1d130fd4	806	u_char c;
mbed_official	0:51ac1d130fd4	807	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	808
mbed_official	0:51ac1d130fd4	809	LWIP_UNUSED_ARG(ipaddr);
mbed_official	0:51ac1d130fd4	810
mbed_official	0:51ac1d130fd4	811	/* Validate parameters. */
mbed_official	0:51ac1d130fd4	812	/* We let any protocol value go through - it can't hurt us
mbed_official	0:51ac1d130fd4	813	* and the peer will just drop it if it's not accepting it. */
mbed_official	0:51ac1d130fd4	814	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
mbed_official	0:51ac1d130fd4	815	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
mbed_official	0:51ac1d130fd4	816	pd, PPP_IP, pb));
mbed_official	0:51ac1d130fd4	817	LINK_STATS_INC(link.opterr);
mbed_official	0:51ac1d130fd4	818	LINK_STATS_INC(link.drop);
mbed_official	0:51ac1d130fd4	819	snmp_inc_ifoutdiscards(netif);
mbed_official	0:51ac1d130fd4	820	return ERR_ARG;
mbed_official	0:51ac1d130fd4	821	}
mbed_official	0:51ac1d130fd4	822
mbed_official	0:51ac1d130fd4	823	/* Check that the link is up. */
mbed_official	0:51ac1d130fd4	824	if (lcp_phase[pd] == PHASE_DEAD) {
mbed_official	0:51ac1d130fd4	825	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
mbed_official	0:51ac1d130fd4	826	LINK_STATS_INC(link.rterr);
mbed_official	0:51ac1d130fd4	827	LINK_STATS_INC(link.drop);
mbed_official	0:51ac1d130fd4	828	snmp_inc_ifoutdiscards(netif);
mbed_official	0:51ac1d130fd4	829	return ERR_RTE;
mbed_official	0:51ac1d130fd4	830	}
mbed_official	0:51ac1d130fd4	831
mbed_official	0:51ac1d130fd4	832	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	833	if(pc->ethif) {
mbed_official	0:51ac1d130fd4	834	return pppifOutputOverEthernet(pd, pb);
mbed_official	0:51ac1d130fd4	835	}
mbed_official	0:51ac1d130fd4	836	#endif /* PPPOE_SUPPORT */
mbed_official	0:51ac1d130fd4	837
mbed_official	0:51ac1d130fd4	838	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	839	/* Grab an output buffer. */
mbed_official	0:51ac1d130fd4	840	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
mbed_official	0:51ac1d130fd4	841	if (headMB == NULL) {
mbed_official	0:51ac1d130fd4	842	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
mbed_official	0:51ac1d130fd4	843	LINK_STATS_INC(link.memerr);
mbed_official	0:51ac1d130fd4	844	LINK_STATS_INC(link.drop);
mbed_official	0:51ac1d130fd4	845	snmp_inc_ifoutdiscards(netif);
mbed_official	0:51ac1d130fd4	846	return ERR_MEM;
mbed_official	0:51ac1d130fd4	847	}
mbed_official	0:51ac1d130fd4	848
mbed_official	0:51ac1d130fd4	849	#if VJ_SUPPORT
mbed_official	0:51ac1d130fd4	850	/*
mbed_official	0:51ac1d130fd4	851	* Attempt Van Jacobson header compression if VJ is configured and
mbed_official	0:51ac1d130fd4	852	* this is an IP packet.
mbed_official	0:51ac1d130fd4	853	*/
mbed_official	0:51ac1d130fd4	854	if (protocol == PPP_IP && pc->vjEnabled) {
mbed_official	0:51ac1d130fd4	855	switch (vj_compress_tcp(&pc->vjComp, pb)) {
mbed_official	0:51ac1d130fd4	856	case TYPE_IP:
mbed_official	0:51ac1d130fd4	857	/* No change...
mbed_official	0:51ac1d130fd4	858	protocol = PPP_IP_PROTOCOL; */
mbed_official	0:51ac1d130fd4	859	break;
mbed_official	0:51ac1d130fd4	860	case TYPE_COMPRESSED_TCP:
mbed_official	0:51ac1d130fd4	861	protocol = PPP_VJC_COMP;
mbed_official	0:51ac1d130fd4	862	break;
mbed_official	0:51ac1d130fd4	863	case TYPE_UNCOMPRESSED_TCP:
mbed_official	0:51ac1d130fd4	864	protocol = PPP_VJC_UNCOMP;
mbed_official	0:51ac1d130fd4	865	break;
mbed_official	0:51ac1d130fd4	866	default:
mbed_official	0:51ac1d130fd4	867	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
mbed_official	0:51ac1d130fd4	868	LINK_STATS_INC(link.proterr);
mbed_official	0:51ac1d130fd4	869	LINK_STATS_INC(link.drop);
mbed_official	0:51ac1d130fd4	870	snmp_inc_ifoutdiscards(netif);
mbed_official	0:51ac1d130fd4	871	pbuf_free(headMB);
mbed_official	0:51ac1d130fd4	872	return ERR_VAL;
mbed_official	0:51ac1d130fd4	873	}
mbed_official	0:51ac1d130fd4	874	}
mbed_official	0:51ac1d130fd4	875	#endif /* VJ_SUPPORT */
mbed_official	0:51ac1d130fd4	876
mbed_official	0:51ac1d130fd4	877	tailMB = headMB;
mbed_official	0:51ac1d130fd4	878
mbed_official	0:51ac1d130fd4	879	/* Build the PPP header. */
mbed_official	0:51ac1d130fd4	880	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
mbed_official	0:51ac1d130fd4	881	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
mbed_official	0:51ac1d130fd4	882	}
mbed_official	0:51ac1d130fd4	883
mbed_official	0:51ac1d130fd4	884	pc->lastXMit = sys_jiffies();
mbed_official	0:51ac1d130fd4	885	if (!pc->accomp) {
mbed_official	0:51ac1d130fd4	886	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
mbed_official	0:51ac1d130fd4	887	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
mbed_official	0:51ac1d130fd4	888	fcsOut = PPP_FCS(fcsOut, PPP_UI);
mbed_official	0:51ac1d130fd4	889	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
mbed_official	0:51ac1d130fd4	890	}
mbed_official	0:51ac1d130fd4	891	if (!pc->pcomp \|\| protocol > 0xFF) {
mbed_official	0:51ac1d130fd4	892	c = (protocol >> 8) & 0xFF;
mbed_official	0:51ac1d130fd4	893	fcsOut = PPP_FCS(fcsOut, c);
mbed_official	0:51ac1d130fd4	894	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed_official	0:51ac1d130fd4	895	}
mbed_official	0:51ac1d130fd4	896	c = protocol & 0xFF;
mbed_official	0:51ac1d130fd4	897	fcsOut = PPP_FCS(fcsOut, c);
mbed_official	0:51ac1d130fd4	898	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed_official	0:51ac1d130fd4	899
mbed_official	0:51ac1d130fd4	900	/* Load packet. */
mbed_official	0:51ac1d130fd4	901	for(p = pb; p; p = p->next) {
mbed_official	0:51ac1d130fd4	902	int n;
mbed_official	0:51ac1d130fd4	903	u_char *sPtr;
mbed_official	0:51ac1d130fd4	904
mbed_official	0:51ac1d130fd4	905	sPtr = (u_char*)p->payload;
mbed_official	0:51ac1d130fd4	906	n = p->len;
mbed_official	0:51ac1d130fd4	907	while (n-- > 0) {
mbed_official	0:51ac1d130fd4	908	c = *sPtr++;
mbed_official	0:51ac1d130fd4	909
mbed_official	0:51ac1d130fd4	910	/* Update FCS before checking for special characters. */
mbed_official	0:51ac1d130fd4	911	fcsOut = PPP_FCS(fcsOut, c);
mbed_official	0:51ac1d130fd4	912
mbed_official	0:51ac1d130fd4	913	/* Copy to output buffer escaping special characters. */
mbed_official	0:51ac1d130fd4	914	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed_official	0:51ac1d130fd4	915	}
mbed_official	0:51ac1d130fd4	916	}
mbed_official	0:51ac1d130fd4	917
mbed_official	0:51ac1d130fd4	918	/* Add FCS and trailing flag. */
mbed_official	0:51ac1d130fd4	919	c = ~fcsOut & 0xFF;
mbed_official	0:51ac1d130fd4	920	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed_official	0:51ac1d130fd4	921	c = (~fcsOut >> 8) & 0xFF;
mbed_official	0:51ac1d130fd4	922	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed_official	0:51ac1d130fd4	923	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
mbed_official	0:51ac1d130fd4	924
mbed_official	0:51ac1d130fd4	925	/* If we failed to complete the packet, throw it away. */
mbed_official	0:51ac1d130fd4	926	if (!tailMB) {
mbed_official	0:51ac1d130fd4	927	PPPDEBUG(LOG_WARNING,
mbed_official	0:51ac1d130fd4	928	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
mbed_official	0:51ac1d130fd4	929	pd, protocol));
mbed_official	0:51ac1d130fd4	930	pbuf_free(headMB);
mbed_official	0:51ac1d130fd4	931	LINK_STATS_INC(link.memerr);
mbed_official	0:51ac1d130fd4	932	LINK_STATS_INC(link.drop);
mbed_official	0:51ac1d130fd4	933	snmp_inc_ifoutdiscards(netif);
mbed_official	0:51ac1d130fd4	934	return ERR_MEM;
mbed_official	0:51ac1d130fd4	935	}
mbed_official	0:51ac1d130fd4	936
mbed_official	0:51ac1d130fd4	937	/* Send it. */
mbed_official	0:51ac1d130fd4	938	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
mbed_official	0:51ac1d130fd4	939
mbed_official	0:51ac1d130fd4	940	nPut(pc, headMB);
mbed_official	0:51ac1d130fd4	941	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	942
mbed_official	0:51ac1d130fd4	943	return ERR_OK;
mbed_official	0:51ac1d130fd4	944	}
mbed_official	0:51ac1d130fd4	945
mbed_official	0:51ac1d130fd4	946	/* Get and set parameters for the given connection.
mbed_official	0:51ac1d130fd4	947	* Return 0 on success, an error code on failure. */
mbed_official	0:51ac1d130fd4	948	int
mbed_official	0:51ac1d130fd4	949	pppIOCtl(int pd, int cmd, void *arg)
mbed_official	0:51ac1d130fd4	950	{
mbed_official	0:51ac1d130fd4	951	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	952	int st = 0;
mbed_official	0:51ac1d130fd4	953
mbed_official	0:51ac1d130fd4	954	if (pd < 0 \|\| pd >= NUM_PPP) {
mbed_official	0:51ac1d130fd4	955	st = PPPERR_PARAM;
mbed_official	0:51ac1d130fd4	956	} else {
mbed_official	0:51ac1d130fd4	957	switch(cmd) {
mbed_official	0:51ac1d130fd4	958	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
mbed_official	0:51ac1d130fd4	959	if (arg) {
mbed_official	0:51ac1d130fd4	960	(int )arg = (int)(pc->if_up);
mbed_official	0:51ac1d130fd4	961	} else {
mbed_official	0:51ac1d130fd4	962	st = PPPERR_PARAM;
mbed_official	0:51ac1d130fd4	963	}
mbed_official	0:51ac1d130fd4	964	break;
mbed_official	0:51ac1d130fd4	965	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
mbed_official	0:51ac1d130fd4	966	if (arg) {
mbed_official	0:51ac1d130fd4	967	pc->errCode = (int )arg;
mbed_official	0:51ac1d130fd4	968	} else {
mbed_official	0:51ac1d130fd4	969	st = PPPERR_PARAM;
mbed_official	0:51ac1d130fd4	970	}
mbed_official	0:51ac1d130fd4	971	break;
mbed_official	0:51ac1d130fd4	972	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
mbed_official	0:51ac1d130fd4	973	if (arg) {
mbed_official	0:51ac1d130fd4	974	(int )arg = (int)(pc->errCode);
mbed_official	0:51ac1d130fd4	975	} else {
mbed_official	0:51ac1d130fd4	976	st = PPPERR_PARAM;
mbed_official	0:51ac1d130fd4	977	}
mbed_official	0:51ac1d130fd4	978	break;
mbed_official	0:51ac1d130fd4	979	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	980	case PPPCTLG_FD: /* Get the fd associated with the ppp */
mbed_official	0:51ac1d130fd4	981	if (arg) {
mbed_official	0:51ac1d130fd4	982	(sio_fd_t )arg = pc->fd;
mbed_official	0:51ac1d130fd4	983	} else {
mbed_official	0:51ac1d130fd4	984	st = PPPERR_PARAM;
mbed_official	0:51ac1d130fd4	985	}
mbed_official	0:51ac1d130fd4	986	break;
mbed_official	0:51ac1d130fd4	987	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	988	default:
mbed_official	0:51ac1d130fd4	989	st = PPPERR_PARAM;
mbed_official	0:51ac1d130fd4	990	break;
mbed_official	0:51ac1d130fd4	991	}
mbed_official	0:51ac1d130fd4	992	}
mbed_official	0:51ac1d130fd4	993
mbed_official	0:51ac1d130fd4	994	return st;
mbed_official	0:51ac1d130fd4	995	}
mbed_official	0:51ac1d130fd4	996
mbed_official	0:51ac1d130fd4	997	/*
mbed_official	0:51ac1d130fd4	998	* Return the Maximum Transmission Unit for the given PPP connection.
mbed_official	0:51ac1d130fd4	999	*/
mbed_official	0:51ac1d130fd4	1000	u_short
mbed_official	0:51ac1d130fd4	1001	pppMTU(int pd)
mbed_official	0:51ac1d130fd4	1002	{
mbed_official	0:51ac1d130fd4	1003	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	1004	u_short st;
mbed_official	0:51ac1d130fd4	1005
mbed_official	0:51ac1d130fd4	1006	/* Validate parameters. */
mbed_official	0:51ac1d130fd4	1007	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed_official	0:51ac1d130fd4	1008	st = 0;
mbed_official	0:51ac1d130fd4	1009	} else {
mbed_official	0:51ac1d130fd4	1010	st = pc->mtu;
mbed_official	0:51ac1d130fd4	1011	}
mbed_official	0:51ac1d130fd4	1012
mbed_official	0:51ac1d130fd4	1013	return st;
mbed_official	0:51ac1d130fd4	1014	}
mbed_official	0:51ac1d130fd4	1015
mbed_official	0:51ac1d130fd4	1016	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	1017	int
mbed_official	0:51ac1d130fd4	1018	pppWriteOverEthernet(int pd, const u_char *s, int n)
mbed_official	0:51ac1d130fd4	1019	{
mbed_official	0:51ac1d130fd4	1020	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	1021	struct pbuf *pb;
mbed_official	0:51ac1d130fd4	1022
mbed_official	0:51ac1d130fd4	1023	/* skip address & flags */
mbed_official	0:51ac1d130fd4	1024	s += 2;
mbed_official	0:51ac1d130fd4	1025	n -= 2;
mbed_official	0:51ac1d130fd4	1026
mbed_official	0:51ac1d130fd4	1027	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
mbed_official	0:51ac1d130fd4	1028	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
mbed_official	0:51ac1d130fd4	1029	if(!pb) {
mbed_official	0:51ac1d130fd4	1030	LINK_STATS_INC(link.memerr);
mbed_official	0:51ac1d130fd4	1031	LINK_STATS_INC(link.proterr);
mbed_official	0:51ac1d130fd4	1032	snmp_inc_ifoutdiscards(&pc->netif);
mbed_official	0:51ac1d130fd4	1033	return PPPERR_ALLOC;
mbed_official	0:51ac1d130fd4	1034	}
mbed_official	0:51ac1d130fd4	1035
mbed_official	0:51ac1d130fd4	1036	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
mbed_official	0:51ac1d130fd4	1037
mbed_official	0:51ac1d130fd4	1038	pc->lastXMit = sys_jiffies();
mbed_official	0:51ac1d130fd4	1039
mbed_official	0:51ac1d130fd4	1040	MEMCPY(pb->payload, s, n);
mbed_official	0:51ac1d130fd4	1041
mbed_official	0:51ac1d130fd4	1042	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
mbed_official	0:51ac1d130fd4	1043	LINK_STATS_INC(link.err);
mbed_official	0:51ac1d130fd4	1044	snmp_inc_ifoutdiscards(&pc->netif);
mbed_official	0:51ac1d130fd4	1045	return PPPERR_DEVICE;
mbed_official	0:51ac1d130fd4	1046	}
mbed_official	0:51ac1d130fd4	1047
mbed_official	0:51ac1d130fd4	1048	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
mbed_official	0:51ac1d130fd4	1049	snmp_inc_ifoutucastpkts(&pc->netif);
mbed_official	0:51ac1d130fd4	1050	LINK_STATS_INC(link.xmit);
mbed_official	0:51ac1d130fd4	1051	return PPPERR_NONE;
mbed_official	0:51ac1d130fd4	1052	}
mbed_official	0:51ac1d130fd4	1053	#endif /* PPPOE_SUPPORT */
mbed_official	0:51ac1d130fd4	1054
mbed_official	0:51ac1d130fd4	1055	/*
mbed_official	0:51ac1d130fd4	1056	* Write n characters to a ppp link.
mbed_official	0:51ac1d130fd4	1057	* RETURN: >= 0 Number of characters written
mbed_official	0:51ac1d130fd4	1058	* -1 Failed to write to device
mbed_official	0:51ac1d130fd4	1059	*/
mbed_official	0:51ac1d130fd4	1060	int
mbed_official	0:51ac1d130fd4	1061	pppWrite(int pd, const u_char *s, int n)
mbed_official	0:51ac1d130fd4	1062	{
mbed_official	0:51ac1d130fd4	1063	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	1064	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	1065	u_char c;
mbed_official	0:51ac1d130fd4	1066	u_int fcsOut;
mbed_official	0:51ac1d130fd4	1067	struct pbuf headMB, tailMB;
mbed_official	0:51ac1d130fd4	1068	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	1069
mbed_official	0:51ac1d130fd4	1070	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	1071	if(pc->ethif) {
mbed_official	0:51ac1d130fd4	1072	return pppWriteOverEthernet(pd, s, n);
mbed_official	0:51ac1d130fd4	1073	}
mbed_official	0:51ac1d130fd4	1074	#endif /* PPPOE_SUPPORT */
mbed_official	0:51ac1d130fd4	1075
mbed_official	0:51ac1d130fd4	1076	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	1077	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
mbed_official	0:51ac1d130fd4	1078	if (headMB == NULL) {
mbed_official	0:51ac1d130fd4	1079	LINK_STATS_INC(link.memerr);
mbed_official	0:51ac1d130fd4	1080	LINK_STATS_INC(link.proterr);
mbed_official	0:51ac1d130fd4	1081	snmp_inc_ifoutdiscards(&pc->netif);
mbed_official	0:51ac1d130fd4	1082	return PPPERR_ALLOC;
mbed_official	0:51ac1d130fd4	1083	}
mbed_official	0:51ac1d130fd4	1084
mbed_official	0:51ac1d130fd4	1085	tailMB = headMB;
mbed_official	0:51ac1d130fd4	1086
mbed_official	0:51ac1d130fd4	1087	/* If the link has been idle, we'll send a fresh flag character to
mbed_official	0:51ac1d130fd4	1088	* flush any noise. */
mbed_official	0:51ac1d130fd4	1089	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
mbed_official	0:51ac1d130fd4	1090	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
mbed_official	0:51ac1d130fd4	1091	}
mbed_official	0:51ac1d130fd4	1092	pc->lastXMit = sys_jiffies();
mbed_official	0:51ac1d130fd4	1093
mbed_official	0:51ac1d130fd4	1094	fcsOut = PPP_INITFCS;
mbed_official	0:51ac1d130fd4	1095	/* Load output buffer. */
mbed_official	0:51ac1d130fd4	1096	while (n-- > 0) {
mbed_official	0:51ac1d130fd4	1097	c = *s++;
mbed_official	0:51ac1d130fd4	1098
mbed_official	0:51ac1d130fd4	1099	/* Update FCS before checking for special characters. */
mbed_official	0:51ac1d130fd4	1100	fcsOut = PPP_FCS(fcsOut, c);
mbed_official	0:51ac1d130fd4	1101
mbed_official	0:51ac1d130fd4	1102	/* Copy to output buffer escaping special characters. */
mbed_official	0:51ac1d130fd4	1103	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed_official	0:51ac1d130fd4	1104	}
mbed_official	0:51ac1d130fd4	1105
mbed_official	0:51ac1d130fd4	1106	/* Add FCS and trailing flag. */
mbed_official	0:51ac1d130fd4	1107	c = ~fcsOut & 0xFF;
mbed_official	0:51ac1d130fd4	1108	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed_official	0:51ac1d130fd4	1109	c = (~fcsOut >> 8) & 0xFF;
mbed_official	0:51ac1d130fd4	1110	tailMB = pppAppend(c, tailMB, &pc->outACCM);
mbed_official	0:51ac1d130fd4	1111	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
mbed_official	0:51ac1d130fd4	1112
mbed_official	0:51ac1d130fd4	1113	/* If we failed to complete the packet, throw it away.
mbed_official	0:51ac1d130fd4	1114	* Otherwise send it. */
mbed_official	0:51ac1d130fd4	1115	if (!tailMB) {
mbed_official	0:51ac1d130fd4	1116	PPPDEBUG(LOG_WARNING,
mbed_official	0:51ac1d130fd4	1117	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
mbed_official	0:51ac1d130fd4	1118	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
mbed_official	0:51ac1d130fd4	1119	pbuf_free(headMB);
mbed_official	0:51ac1d130fd4	1120	LINK_STATS_INC(link.memerr);
mbed_official	0:51ac1d130fd4	1121	LINK_STATS_INC(link.proterr);
mbed_official	0:51ac1d130fd4	1122	snmp_inc_ifoutdiscards(&pc->netif);
mbed_official	0:51ac1d130fd4	1123	return PPPERR_ALLOC;
mbed_official	0:51ac1d130fd4	1124	}
mbed_official	0:51ac1d130fd4	1125
mbed_official	0:51ac1d130fd4	1126	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
mbed_official	0:51ac1d130fd4	1127	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
mbed_official	0:51ac1d130fd4	1128	nPut(pc, headMB);
mbed_official	0:51ac1d130fd4	1129	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	1130
mbed_official	0:51ac1d130fd4	1131	return PPPERR_NONE;
mbed_official	0:51ac1d130fd4	1132	}
mbed_official	0:51ac1d130fd4	1133
mbed_official	0:51ac1d130fd4	1134	/*
mbed_official	0:51ac1d130fd4	1135	* ppp_send_config - configure the transmit characteristics of
mbed_official	0:51ac1d130fd4	1136	* the ppp interface.
mbed_official	0:51ac1d130fd4	1137	*/
mbed_official	0:51ac1d130fd4	1138	void
mbed_official	0:51ac1d130fd4	1139	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
mbed_official	0:51ac1d130fd4	1140	{
mbed_official	0:51ac1d130fd4	1141	PPPControl *pc = &pppControl[unit];
mbed_official	0:51ac1d130fd4	1142	int i;
mbed_official	0:51ac1d130fd4	1143
mbed_official	0:51ac1d130fd4	1144	pc->mtu = mtu;
mbed_official	0:51ac1d130fd4	1145	pc->pcomp = pcomp;
mbed_official	0:51ac1d130fd4	1146	pc->accomp = accomp;
mbed_official	0:51ac1d130fd4	1147
mbed_official	0:51ac1d130fd4	1148	/* Load the ACCM bits for the 32 control codes. */
mbed_official	0:51ac1d130fd4	1149	for (i = 0; i < 32/8; i++) {
mbed_official	0:51ac1d130fd4	1150	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
mbed_official	0:51ac1d130fd4	1151	}
mbed_official	0:51ac1d130fd4	1152	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
mbed_official	0:51ac1d130fd4	1153	unit,
mbed_official	0:51ac1d130fd4	1154	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
mbed_official	0:51ac1d130fd4	1155	}
mbed_official	0:51ac1d130fd4	1156
mbed_official	0:51ac1d130fd4	1157
mbed_official	0:51ac1d130fd4	1158	/*
mbed_official	0:51ac1d130fd4	1159	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
mbed_official	0:51ac1d130fd4	1160	*/
mbed_official	0:51ac1d130fd4	1161	void
mbed_official	0:51ac1d130fd4	1162	ppp_set_xaccm(int unit, ext_accm *accm)
mbed_official	0:51ac1d130fd4	1163	{
mbed_official	0:51ac1d130fd4	1164	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
mbed_official	0:51ac1d130fd4	1165	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
mbed_official	0:51ac1d130fd4	1166	unit,
mbed_official	0:51ac1d130fd4	1167	pppControl[unit].outACCM[0],
mbed_official	0:51ac1d130fd4	1168	pppControl[unit].outACCM[1],
mbed_official	0:51ac1d130fd4	1169	pppControl[unit].outACCM[2],
mbed_official	0:51ac1d130fd4	1170	pppControl[unit].outACCM[3]));
mbed_official	0:51ac1d130fd4	1171	}
mbed_official	0:51ac1d130fd4	1172
mbed_official	0:51ac1d130fd4	1173
mbed_official	0:51ac1d130fd4	1174	/*
mbed_official	0:51ac1d130fd4	1175	* ppp_recv_config - configure the receive-side characteristics of
mbed_official	0:51ac1d130fd4	1176	* the ppp interface.
mbed_official	0:51ac1d130fd4	1177	*/
mbed_official	0:51ac1d130fd4	1178	void
mbed_official	0:51ac1d130fd4	1179	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
mbed_official	0:51ac1d130fd4	1180	{
mbed_official	0:51ac1d130fd4	1181	PPPControl *pc = &pppControl[unit];
mbed_official	0:51ac1d130fd4	1182	int i;
mbed_official	0:51ac1d130fd4	1183	SYS_ARCH_DECL_PROTECT(lev);
mbed_official	0:51ac1d130fd4	1184
mbed_official	0:51ac1d130fd4	1185	LWIP_UNUSED_ARG(accomp);
mbed_official	0:51ac1d130fd4	1186	LWIP_UNUSED_ARG(pcomp);
mbed_official	0:51ac1d130fd4	1187	LWIP_UNUSED_ARG(mru);
mbed_official	0:51ac1d130fd4	1188
mbed_official	0:51ac1d130fd4	1189	/* Load the ACCM bits for the 32 control codes. */
mbed_official	0:51ac1d130fd4	1190	SYS_ARCH_PROTECT(lev);
mbed_official	0:51ac1d130fd4	1191	for (i = 0; i < 32 / 8; i++) {
mbed_official	0:51ac1d130fd4	1192	/* @todo: does this work? ext_accm has been modified from pppd! */
mbed_official	0:51ac1d130fd4	1193	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
mbed_official	0:51ac1d130fd4	1194	}
mbed_official	0:51ac1d130fd4	1195	SYS_ARCH_UNPROTECT(lev);
mbed_official	0:51ac1d130fd4	1196	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
mbed_official	0:51ac1d130fd4	1197	unit,
mbed_official	0:51ac1d130fd4	1198	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
mbed_official	0:51ac1d130fd4	1199	}
mbed_official	0:51ac1d130fd4	1200
mbed_official	0:51ac1d130fd4	1201	#if 0
mbed_official	0:51ac1d130fd4	1202	/*
mbed_official	0:51ac1d130fd4	1203	* ccp_test - ask kernel whether a given compression method
mbed_official	0:51ac1d130fd4	1204	* is acceptable for use. Returns 1 if the method and parameters
mbed_official	0:51ac1d130fd4	1205	* are OK, 0 if the method is known but the parameters are not OK
mbed_official	0:51ac1d130fd4	1206	* (e.g. code size should be reduced), or -1 if the method is unknown.
mbed_official	0:51ac1d130fd4	1207	*/
mbed_official	0:51ac1d130fd4	1208	int
mbed_official	0:51ac1d130fd4	1209	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
mbed_official	0:51ac1d130fd4	1210	{
mbed_official	0:51ac1d130fd4	1211	return 0; /* XXX Currently no compression. */
mbed_official	0:51ac1d130fd4	1212	}
mbed_official	0:51ac1d130fd4	1213
mbed_official	0:51ac1d130fd4	1214	/*
mbed_official	0:51ac1d130fd4	1215	* ccp_flags_set - inform kernel about the current state of CCP.
mbed_official	0:51ac1d130fd4	1216	*/
mbed_official	0:51ac1d130fd4	1217	void
mbed_official	0:51ac1d130fd4	1218	ccp_flags_set(int unit, int isopen, int isup)
mbed_official	0:51ac1d130fd4	1219	{
mbed_official	0:51ac1d130fd4	1220	/* XXX */
mbed_official	0:51ac1d130fd4	1221	}
mbed_official	0:51ac1d130fd4	1222
mbed_official	0:51ac1d130fd4	1223	/*
mbed_official	0:51ac1d130fd4	1224	* ccp_fatal_error - returns 1 if decompression was disabled as a
mbed_official	0:51ac1d130fd4	1225	* result of an error detected after decompression of a packet,
mbed_official	0:51ac1d130fd4	1226	* 0 otherwise. This is necessary because of patent nonsense.
mbed_official	0:51ac1d130fd4	1227	*/
mbed_official	0:51ac1d130fd4	1228	int
mbed_official	0:51ac1d130fd4	1229	ccp_fatal_error(int unit)
mbed_official	0:51ac1d130fd4	1230	{
mbed_official	0:51ac1d130fd4	1231	/* XXX */
mbed_official	0:51ac1d130fd4	1232	return 0;
mbed_official	0:51ac1d130fd4	1233	}
mbed_official	0:51ac1d130fd4	1234	#endif
mbed_official	0:51ac1d130fd4	1235
mbed_official	0:51ac1d130fd4	1236	/*
mbed_official	0:51ac1d130fd4	1237	* get_idle_time - return how long the link has been idle.
mbed_official	0:51ac1d130fd4	1238	*/
mbed_official	0:51ac1d130fd4	1239	int
mbed_official	0:51ac1d130fd4	1240	get_idle_time(int u, struct ppp_idle *ip)
mbed_official	0:51ac1d130fd4	1241	{
mbed_official	0:51ac1d130fd4	1242	/* XXX */
mbed_official	0:51ac1d130fd4	1243	LWIP_UNUSED_ARG(u);
mbed_official	0:51ac1d130fd4	1244	LWIP_UNUSED_ARG(ip);
mbed_official	0:51ac1d130fd4	1245
mbed_official	0:51ac1d130fd4	1246	return 0;
mbed_official	0:51ac1d130fd4	1247	}
mbed_official	0:51ac1d130fd4	1248
mbed_official	0:51ac1d130fd4	1249
mbed_official	0:51ac1d130fd4	1250	/*
mbed_official	0:51ac1d130fd4	1251	* Return user specified netmask, modified by any mask we might determine
mbed_official	0:51ac1d130fd4	1252	* for address `addr' (in network byte order).
mbed_official	0:51ac1d130fd4	1253	* Here we scan through the system's list of interfaces, looking for
mbed_official	0:51ac1d130fd4	1254	* any non-point-to-point interfaces which might appear to be on the same
mbed_official	0:51ac1d130fd4	1255	* network as `addr'. If we find any, we OR in their netmask to the
mbed_official	0:51ac1d130fd4	1256	* user-specified netmask.
mbed_official	0:51ac1d130fd4	1257	*/
mbed_official	0:51ac1d130fd4	1258	u32_t
mbed_official	0:51ac1d130fd4	1259	GetMask(u32_t addr)
mbed_official	0:51ac1d130fd4	1260	{
mbed_official	0:51ac1d130fd4	1261	u32_t mask, nmask;
mbed_official	0:51ac1d130fd4	1262
mbed_official	0:51ac1d130fd4	1263	htonl(addr);
mbed_official	0:51ac1d130fd4	1264	if (IP_CLASSA(addr)) { /* determine network mask for address class */
mbed_official	0:51ac1d130fd4	1265	nmask = IP_CLASSA_NET;
mbed_official	0:51ac1d130fd4	1266	} else if (IP_CLASSB(addr)) {
mbed_official	0:51ac1d130fd4	1267	nmask = IP_CLASSB_NET;
mbed_official	0:51ac1d130fd4	1268	} else {
mbed_official	0:51ac1d130fd4	1269	nmask = IP_CLASSC_NET;
mbed_official	0:51ac1d130fd4	1270	}
mbed_official	0:51ac1d130fd4	1271
mbed_official	0:51ac1d130fd4	1272	/* class D nets are disallowed by bad_ip_adrs */
mbed_official	0:51ac1d130fd4	1273	mask = subnetMask \| htonl(nmask);
mbed_official	0:51ac1d130fd4	1274
mbed_official	0:51ac1d130fd4	1275	/* XXX
mbed_official	0:51ac1d130fd4	1276	* Scan through the system's network interfaces.
mbed_official	0:51ac1d130fd4	1277	* Get each netmask and OR them into our mask.
mbed_official	0:51ac1d130fd4	1278	*/
mbed_official	0:51ac1d130fd4	1279
mbed_official	0:51ac1d130fd4	1280	return mask;
mbed_official	0:51ac1d130fd4	1281	}
mbed_official	0:51ac1d130fd4	1282
mbed_official	0:51ac1d130fd4	1283	/*
mbed_official	0:51ac1d130fd4	1284	* sifvjcomp - config tcp header compression
mbed_official	0:51ac1d130fd4	1285	*/
mbed_official	0:51ac1d130fd4	1286	int
mbed_official	0:51ac1d130fd4	1287	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
mbed_official	0:51ac1d130fd4	1288	{
mbed_official	0:51ac1d130fd4	1289	#if PPPOS_SUPPORT && VJ_SUPPORT
mbed_official	0:51ac1d130fd4	1290	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	1291
mbed_official	0:51ac1d130fd4	1292	pc->vjEnabled = vjcomp;
mbed_official	0:51ac1d130fd4	1293	pc->vjComp.compressSlot = cidcomp;
mbed_official	0:51ac1d130fd4	1294	pc->vjComp.maxSlotIndex = maxcid;
mbed_official	0:51ac1d130fd4	1295	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
mbed_official	0:51ac1d130fd4	1296	vjcomp, cidcomp, maxcid));
mbed_official	0:51ac1d130fd4	1297	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed_official	0:51ac1d130fd4	1298	LWIP_UNUSED_ARG(pd);
mbed_official	0:51ac1d130fd4	1299	LWIP_UNUSED_ARG(vjcomp);
mbed_official	0:51ac1d130fd4	1300	LWIP_UNUSED_ARG(cidcomp);
mbed_official	0:51ac1d130fd4	1301	LWIP_UNUSED_ARG(maxcid);
mbed_official	0:51ac1d130fd4	1302	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed_official	0:51ac1d130fd4	1303
mbed_official	0:51ac1d130fd4	1304	return 0;
mbed_official	0:51ac1d130fd4	1305	}
mbed_official	0:51ac1d130fd4	1306
mbed_official	0:51ac1d130fd4	1307	/*
mbed_official	0:51ac1d130fd4	1308	* pppifNetifInit - netif init callback
mbed_official	0:51ac1d130fd4	1309	*/
mbed_official	0:51ac1d130fd4	1310	static err_t
mbed_official	0:51ac1d130fd4	1311	pppifNetifInit(struct netif *netif)
mbed_official	0:51ac1d130fd4	1312	{
mbed_official	0:51ac1d130fd4	1313	netif->name[0] = 'p';
mbed_official	0:51ac1d130fd4	1314	netif->name[1] = 'p';
mbed_official	0:51ac1d130fd4	1315	netif->output = pppifOutput;
mbed_official	0:51ac1d130fd4	1316	netif->mtu = pppMTU((int)(size_t)netif->state);
mbed_official	0:51ac1d130fd4	1317	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
mbed_official	0:51ac1d130fd4	1318	#if LWIP_NETIF_HOSTNAME
mbed_official	0:51ac1d130fd4	1319	/* @todo: Initialize interface hostname */
mbed_official	0:51ac1d130fd4	1320	/* netif_set_hostname(netif, "lwip"); */
mbed_official	0:51ac1d130fd4	1321	#endif /* LWIP_NETIF_HOSTNAME */
mbed_official	0:51ac1d130fd4	1322	return ERR_OK;
mbed_official	0:51ac1d130fd4	1323	}
mbed_official	0:51ac1d130fd4	1324
mbed_official	0:51ac1d130fd4	1325
mbed_official	0:51ac1d130fd4	1326	/*
mbed_official	0:51ac1d130fd4	1327	* sifup - Config the interface up and enable IP packets to pass.
mbed_official	0:51ac1d130fd4	1328	*/
mbed_official	0:51ac1d130fd4	1329	int
mbed_official	0:51ac1d130fd4	1330	sifup(int pd)
mbed_official	0:51ac1d130fd4	1331	{
mbed_official	0:51ac1d130fd4	1332	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	1333	int st = 1;
mbed_official	0:51ac1d130fd4	1334
mbed_official	0:51ac1d130fd4	1335	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed_official	0:51ac1d130fd4	1336	st = 0;
mbed_official	0:51ac1d130fd4	1337	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mbed_official	0:51ac1d130fd4	1338	} else {
mbed_official	0:51ac1d130fd4	1339	netif_remove(&pc->netif);
mbed_official	0:51ac1d130fd4	1340	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
mbed_official	0:51ac1d130fd4	1341	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
mbed_official	0:51ac1d130fd4	1342	netif_set_up(&pc->netif);
mbed_official	0:51ac1d130fd4	1343	pc->if_up = 1;
mbed_official	0:51ac1d130fd4	1344	pc->errCode = PPPERR_NONE;
mbed_official	0:51ac1d130fd4	1345
mbed_official	0:51ac1d130fd4	1346	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
mbed_official	0:51ac1d130fd4	1347	if (pc->linkStatusCB) {
mbed_official	0:51ac1d130fd4	1348	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
mbed_official	0:51ac1d130fd4	1349	}
mbed_official	0:51ac1d130fd4	1350	} else {
mbed_official	0:51ac1d130fd4	1351	st = 0;
mbed_official	0:51ac1d130fd4	1352	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
mbed_official	0:51ac1d130fd4	1353	}
mbed_official	0:51ac1d130fd4	1354	}
mbed_official	0:51ac1d130fd4	1355
mbed_official	0:51ac1d130fd4	1356	return st;
mbed_official	0:51ac1d130fd4	1357	}
mbed_official	0:51ac1d130fd4	1358
mbed_official	0:51ac1d130fd4	1359	/*
mbed_official	0:51ac1d130fd4	1360	* sifnpmode - Set the mode for handling packets for a given NP.
mbed_official	0:51ac1d130fd4	1361	*/
mbed_official	0:51ac1d130fd4	1362	int
mbed_official	0:51ac1d130fd4	1363	sifnpmode(int u, int proto, enum NPmode mode)
mbed_official	0:51ac1d130fd4	1364	{
mbed_official	0:51ac1d130fd4	1365	LWIP_UNUSED_ARG(u);
mbed_official	0:51ac1d130fd4	1366	LWIP_UNUSED_ARG(proto);
mbed_official	0:51ac1d130fd4	1367	LWIP_UNUSED_ARG(mode);
mbed_official	0:51ac1d130fd4	1368	return 0;
mbed_official	0:51ac1d130fd4	1369	}
mbed_official	0:51ac1d130fd4	1370
mbed_official	0:51ac1d130fd4	1371	/*
mbed_official	0:51ac1d130fd4	1372	* sifdown - Config the interface down and disable IP.
mbed_official	0:51ac1d130fd4	1373	*/
mbed_official	0:51ac1d130fd4	1374	int
mbed_official	0:51ac1d130fd4	1375	sifdown(int pd)
mbed_official	0:51ac1d130fd4	1376	{
mbed_official	0:51ac1d130fd4	1377	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	1378	int st = 1;
mbed_official	0:51ac1d130fd4	1379
mbed_official	0:51ac1d130fd4	1380	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed_official	0:51ac1d130fd4	1381	st = 0;
mbed_official	0:51ac1d130fd4	1382	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
mbed_official	0:51ac1d130fd4	1383	} else {
mbed_official	0:51ac1d130fd4	1384	pc->if_up = 0;
mbed_official	0:51ac1d130fd4	1385	/* make sure the netif status callback is called */
mbed_official	0:51ac1d130fd4	1386	netif_set_down(&pc->netif);
mbed_official	0:51ac1d130fd4	1387	netif_remove(&pc->netif);
mbed_official	0:51ac1d130fd4	1388	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
mbed_official	0:51ac1d130fd4	1389	if (pc->linkStatusCB) {
mbed_official	0:51ac1d130fd4	1390	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
mbed_official	0:51ac1d130fd4	1391	}
mbed_official	0:51ac1d130fd4	1392	}
mbed_official	0:51ac1d130fd4	1393	return st;
mbed_official	0:51ac1d130fd4	1394	}
mbed_official	0:51ac1d130fd4	1395
mbed_official	0:51ac1d130fd4	1396	/**
mbed_official	0:51ac1d130fd4	1397	* sifaddr - Config the interface IP addresses and netmask.
mbed_official	0:51ac1d130fd4	1398	* @param pd Interface unit ???
mbed_official	0:51ac1d130fd4	1399	* @param o Our IP address ???
mbed_official	0:51ac1d130fd4	1400	* @param h His IP address ???
mbed_official	0:51ac1d130fd4	1401	* @param m IP subnet mask ???
mbed_official	0:51ac1d130fd4	1402	* @param ns1 Primary DNS
mbed_official	0:51ac1d130fd4	1403	* @param ns2 Secondary DNS
mbed_official	0:51ac1d130fd4	1404	*/
mbed_official	0:51ac1d130fd4	1405	int
mbed_official	0:51ac1d130fd4	1406	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
mbed_official	0:51ac1d130fd4	1407	{
mbed_official	0:51ac1d130fd4	1408	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	1409	int st = 1;
mbed_official	0:51ac1d130fd4	1410
mbed_official	0:51ac1d130fd4	1411	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed_official	0:51ac1d130fd4	1412	st = 0;
mbed_official	0:51ac1d130fd4	1413	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mbed_official	0:51ac1d130fd4	1414	} else {
mbed_official	0:51ac1d130fd4	1415	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
mbed_official	0:51ac1d130fd4	1416	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
mbed_official	0:51ac1d130fd4	1417	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
mbed_official	0:51ac1d130fd4	1418	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
mbed_official	0:51ac1d130fd4	1419	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
mbed_official	0:51ac1d130fd4	1420	}
mbed_official	0:51ac1d130fd4	1421	return st;
mbed_official	0:51ac1d130fd4	1422	}
mbed_official	0:51ac1d130fd4	1423
mbed_official	0:51ac1d130fd4	1424	/**
mbed_official	0:51ac1d130fd4	1425	* cifaddr - Clear the interface IP addresses, and delete routes
mbed_official	0:51ac1d130fd4	1426	* through the interface if possible.
mbed_official	0:51ac1d130fd4	1427	* @param pd Interface unit ???
mbed_official	0:51ac1d130fd4	1428	* @param o Our IP address ???
mbed_official	0:51ac1d130fd4	1429	* @param h IP broadcast address ???
mbed_official	0:51ac1d130fd4	1430	*/
mbed_official	0:51ac1d130fd4	1431	int
mbed_official	0:51ac1d130fd4	1432	cifaddr( int pd, u32_t o, u32_t h)
mbed_official	0:51ac1d130fd4	1433	{
mbed_official	0:51ac1d130fd4	1434	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	1435	int st = 1;
mbed_official	0:51ac1d130fd4	1436
mbed_official	0:51ac1d130fd4	1437	LWIP_UNUSED_ARG(o);
mbed_official	0:51ac1d130fd4	1438	LWIP_UNUSED_ARG(h);
mbed_official	0:51ac1d130fd4	1439	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed_official	0:51ac1d130fd4	1440	st = 0;
mbed_official	0:51ac1d130fd4	1441	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mbed_official	0:51ac1d130fd4	1442	} else {
mbed_official	0:51ac1d130fd4	1443	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
mbed_official	0:51ac1d130fd4	1444	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
mbed_official	0:51ac1d130fd4	1445	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
mbed_official	0:51ac1d130fd4	1446	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
mbed_official	0:51ac1d130fd4	1447	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
mbed_official	0:51ac1d130fd4	1448	}
mbed_official	0:51ac1d130fd4	1449	return st;
mbed_official	0:51ac1d130fd4	1450	}
mbed_official	0:51ac1d130fd4	1451
mbed_official	0:51ac1d130fd4	1452	/*
mbed_official	0:51ac1d130fd4	1453	* sifdefaultroute - assign a default route through the address given.
mbed_official	0:51ac1d130fd4	1454	*/
mbed_official	0:51ac1d130fd4	1455	int
mbed_official	0:51ac1d130fd4	1456	sifdefaultroute(int pd, u32_t l, u32_t g)
mbed_official	0:51ac1d130fd4	1457	{
mbed_official	0:51ac1d130fd4	1458	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	1459	int st = 1;
mbed_official	0:51ac1d130fd4	1460
mbed_official	0:51ac1d130fd4	1461	LWIP_UNUSED_ARG(l);
mbed_official	0:51ac1d130fd4	1462	LWIP_UNUSED_ARG(g);
mbed_official	0:51ac1d130fd4	1463
mbed_official	0:51ac1d130fd4	1464	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed_official	0:51ac1d130fd4	1465	st = 0;
mbed_official	0:51ac1d130fd4	1466	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mbed_official	0:51ac1d130fd4	1467	} else {
mbed_official	0:51ac1d130fd4	1468	netif_set_default(&pc->netif);
mbed_official	0:51ac1d130fd4	1469	}
mbed_official	0:51ac1d130fd4	1470
mbed_official	0:51ac1d130fd4	1471	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
mbed_official	0:51ac1d130fd4	1472
mbed_official	0:51ac1d130fd4	1473	return st;
mbed_official	0:51ac1d130fd4	1474	}
mbed_official	0:51ac1d130fd4	1475
mbed_official	0:51ac1d130fd4	1476	/*
mbed_official	0:51ac1d130fd4	1477	* cifdefaultroute - delete a default route through the address given.
mbed_official	0:51ac1d130fd4	1478	*/
mbed_official	0:51ac1d130fd4	1479	int
mbed_official	0:51ac1d130fd4	1480	cifdefaultroute(int pd, u32_t l, u32_t g)
mbed_official	0:51ac1d130fd4	1481	{
mbed_official	0:51ac1d130fd4	1482	PPPControl *pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	1483	int st = 1;
mbed_official	0:51ac1d130fd4	1484
mbed_official	0:51ac1d130fd4	1485	LWIP_UNUSED_ARG(l);
mbed_official	0:51ac1d130fd4	1486	LWIP_UNUSED_ARG(g);
mbed_official	0:51ac1d130fd4	1487
mbed_official	0:51ac1d130fd4	1488	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
mbed_official	0:51ac1d130fd4	1489	st = 0;
mbed_official	0:51ac1d130fd4	1490	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
mbed_official	0:51ac1d130fd4	1491	} else {
mbed_official	0:51ac1d130fd4	1492	netif_set_default(NULL);
mbed_official	0:51ac1d130fd4	1493	}
mbed_official	0:51ac1d130fd4	1494
mbed_official	0:51ac1d130fd4	1495	return st;
mbed_official	0:51ac1d130fd4	1496	}
mbed_official	0:51ac1d130fd4	1497
mbed_official	0:51ac1d130fd4	1498	/**********************************/
mbed_official	0:51ac1d130fd4	1499	/* LOCAL FUNCTION DEFINITIONS */
mbed_official	0:51ac1d130fd4	1500	/**********************************/
mbed_official	0:51ac1d130fd4	1501
mbed_official	0:51ac1d130fd4	1502	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
mbed_official	0:51ac1d130fd4	1503	/* The main PPP process function. This implements the state machine according
mbed_official	0:51ac1d130fd4	1504	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
mbed_official	0:51ac1d130fd4	1505	static void
mbed_official	0:51ac1d130fd4	1506	pppInputThread(void *arg)
mbed_official	0:51ac1d130fd4	1507	{
mbed_official	0:51ac1d130fd4	1508	int count;
mbed_official	0:51ac1d130fd4	1509	PPPControlRx *pcrx = arg;
mbed_official	0:51ac1d130fd4	1510
mbed_official	0:51ac1d130fd4	1511	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
mbed_official	0:51ac1d130fd4	1512	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
mbed_official	0:51ac1d130fd4	1513	if(count > 0) {
mbed_official	0:51ac1d130fd4	1514	pppInProc(pcrx, pcrx->rxbuf, count);
mbed_official	0:51ac1d130fd4	1515	} else {
mbed_official	0:51ac1d130fd4	1516	/* nothing received, give other tasks a chance to run */
mbed_official	0:51ac1d130fd4	1517	sys_msleep(1);
mbed_official	0:51ac1d130fd4	1518	}
mbed_official	0:51ac1d130fd4	1519	}
mbed_official	0:51ac1d130fd4	1520	}
mbed_official	0:51ac1d130fd4	1521	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
mbed_official	0:51ac1d130fd4	1522
mbed_official	0:51ac1d130fd4	1523	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	1524
mbed_official	0:51ac1d130fd4	1525	void
mbed_official	0:51ac1d130fd4	1526	pppOverEthernetInitFailed(int pd)
mbed_official	0:51ac1d130fd4	1527	{
mbed_official	0:51ac1d130fd4	1528	PPPControl* pc;
mbed_official	0:51ac1d130fd4	1529
mbed_official	0:51ac1d130fd4	1530	pppHup(pd);
mbed_official	0:51ac1d130fd4	1531	pppStop(pd);
mbed_official	0:51ac1d130fd4	1532
mbed_official	0:51ac1d130fd4	1533	pc = &pppControl[pd];
mbed_official	0:51ac1d130fd4	1534	pppoe_destroy(&pc->netif);
mbed_official	0:51ac1d130fd4	1535	pc->openFlag = 0;
mbed_official	0:51ac1d130fd4	1536
mbed_official	0:51ac1d130fd4	1537	if(pc->linkStatusCB) {
mbed_official	0:51ac1d130fd4	1538	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
mbed_official	0:51ac1d130fd4	1539	}
mbed_official	0:51ac1d130fd4	1540	}
mbed_official	0:51ac1d130fd4	1541
mbed_official	0:51ac1d130fd4	1542	static void
mbed_official	0:51ac1d130fd4	1543	pppOverEthernetLinkStatusCB(int pd, int up)
mbed_official	0:51ac1d130fd4	1544	{
mbed_official	0:51ac1d130fd4	1545	if(up) {
mbed_official	0:51ac1d130fd4	1546	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
mbed_official	0:51ac1d130fd4	1547	pppStart(pd);
mbed_official	0:51ac1d130fd4	1548	} else {
mbed_official	0:51ac1d130fd4	1549	pppOverEthernetInitFailed(pd);
mbed_official	0:51ac1d130fd4	1550	}
mbed_official	0:51ac1d130fd4	1551	}
mbed_official	0:51ac1d130fd4	1552	#endif /* PPPOE_SUPPORT */
mbed_official	0:51ac1d130fd4	1553
mbed_official	0:51ac1d130fd4	1554	struct pbuf *
mbed_official	0:51ac1d130fd4	1555	pppSingleBuf(struct pbuf *p)
mbed_official	0:51ac1d130fd4	1556	{
mbed_official	0:51ac1d130fd4	1557	struct pbuf q, b;
mbed_official	0:51ac1d130fd4	1558	u_char *pl;
mbed_official	0:51ac1d130fd4	1559
mbed_official	0:51ac1d130fd4	1560	if(p->tot_len == p->len) {
mbed_official	0:51ac1d130fd4	1561	return p;
mbed_official	0:51ac1d130fd4	1562	}
mbed_official	0:51ac1d130fd4	1563
mbed_official	0:51ac1d130fd4	1564	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
mbed_official	0:51ac1d130fd4	1565	if(!q) {
mbed_official	0:51ac1d130fd4	1566	PPPDEBUG(LOG_ERR,
mbed_official	0:51ac1d130fd4	1567	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
mbed_official	0:51ac1d130fd4	1568	return p; /* live dangerously */
mbed_official	0:51ac1d130fd4	1569	}
mbed_official	0:51ac1d130fd4	1570
mbed_official	0:51ac1d130fd4	1571	for(b = p, pl = q->payload; b != NULL; b = b->next) {
mbed_official	0:51ac1d130fd4	1572	MEMCPY(pl, b->payload, b->len);
mbed_official	0:51ac1d130fd4	1573	pl += b->len;
mbed_official	0:51ac1d130fd4	1574	}
mbed_official	0:51ac1d130fd4	1575
mbed_official	0:51ac1d130fd4	1576	pbuf_free(p);
mbed_official	0:51ac1d130fd4	1577
mbed_official	0:51ac1d130fd4	1578	return q;
mbed_official	0:51ac1d130fd4	1579	}
mbed_official	0:51ac1d130fd4	1580
mbed_official	0:51ac1d130fd4	1581	struct pppInputHeader {
mbed_official	0:51ac1d130fd4	1582	int unit;
mbed_official	0:51ac1d130fd4	1583	u16_t proto;
mbed_official	0:51ac1d130fd4	1584	};
mbed_official	0:51ac1d130fd4	1585
mbed_official	0:51ac1d130fd4	1586	/*
mbed_official	0:51ac1d130fd4	1587	* Pass the processed input packet to the appropriate handler.
mbed_official	0:51ac1d130fd4	1588	* This function and all handlers run in the context of the tcpip_thread
mbed_official	0:51ac1d130fd4	1589	*/
mbed_official	0:51ac1d130fd4	1590	static void
mbed_official	0:51ac1d130fd4	1591	pppInput(void *arg)
mbed_official	0:51ac1d130fd4	1592	{
mbed_official	0:51ac1d130fd4	1593	struct pbuf nb = (struct pbuf )arg;
mbed_official	0:51ac1d130fd4	1594	u16_t protocol;
mbed_official	0:51ac1d130fd4	1595	int pd;
mbed_official	0:51ac1d130fd4	1596
mbed_official	0:51ac1d130fd4	1597	pd = ((struct pppInputHeader *)nb->payload)->unit;
mbed_official	0:51ac1d130fd4	1598	protocol = ((struct pppInputHeader *)nb->payload)->proto;
mbed_official	0:51ac1d130fd4	1599
mbed_official	0:51ac1d130fd4	1600	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
mbed_official	0:51ac1d130fd4	1601	LWIP_ASSERT("pbuf_header failed\n", 0);
mbed_official	0:51ac1d130fd4	1602	goto drop;
mbed_official	0:51ac1d130fd4	1603	}
mbed_official	0:51ac1d130fd4	1604
mbed_official	0:51ac1d130fd4	1605	LINK_STATS_INC(link.recv);
mbed_official	0:51ac1d130fd4	1606	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
mbed_official	0:51ac1d130fd4	1607	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
mbed_official	0:51ac1d130fd4	1608
mbed_official	0:51ac1d130fd4	1609	/*
mbed_official	0:51ac1d130fd4	1610	* Toss all non-LCP packets unless LCP is OPEN.
mbed_official	0:51ac1d130fd4	1611	* Until we get past the authentication phase, toss all packets
mbed_official	0:51ac1d130fd4	1612	* except LCP, LQR and authentication packets.
mbed_official	0:51ac1d130fd4	1613	*/
mbed_official	0:51ac1d130fd4	1614	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
mbed_official	0:51ac1d130fd4	1615	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
mbed_official	0:51ac1d130fd4	1616	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
mbed_official	0:51ac1d130fd4	1617	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
mbed_official	0:51ac1d130fd4	1618	goto drop;
mbed_official	0:51ac1d130fd4	1619	}
mbed_official	0:51ac1d130fd4	1620	}
mbed_official	0:51ac1d130fd4	1621
mbed_official	0:51ac1d130fd4	1622	switch(protocol) {
mbed_official	0:51ac1d130fd4	1623	case PPP_VJC_COMP: /* VJ compressed TCP */
mbed_official	0:51ac1d130fd4	1624	#if PPPOS_SUPPORT && VJ_SUPPORT
mbed_official	0:51ac1d130fd4	1625	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
mbed_official	0:51ac1d130fd4	1626	/*
mbed_official	0:51ac1d130fd4	1627	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
mbed_official	0:51ac1d130fd4	1628	* pass the result to IP.
mbed_official	0:51ac1d130fd4	1629	*/
mbed_official	0:51ac1d130fd4	1630	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
mbed_official	0:51ac1d130fd4	1631	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
mbed_official	0:51ac1d130fd4	1632	return;
mbed_official	0:51ac1d130fd4	1633	}
mbed_official	0:51ac1d130fd4	1634	/* Something's wrong so drop it. */
mbed_official	0:51ac1d130fd4	1635	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
mbed_official	0:51ac1d130fd4	1636	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed_official	0:51ac1d130fd4	1637	/* No handler for this protocol so drop the packet. */
mbed_official	0:51ac1d130fd4	1638	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
mbed_official	0:51ac1d130fd4	1639	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed_official	0:51ac1d130fd4	1640	break;
mbed_official	0:51ac1d130fd4	1641
mbed_official	0:51ac1d130fd4	1642	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
mbed_official	0:51ac1d130fd4	1643	#if PPPOS_SUPPORT && VJ_SUPPORT
mbed_official	0:51ac1d130fd4	1644	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
mbed_official	0:51ac1d130fd4	1645	/*
mbed_official	0:51ac1d130fd4	1646	* Process the TCP/IP header for VJ header compression and then pass
mbed_official	0:51ac1d130fd4	1647	* the packet to IP.
mbed_official	0:51ac1d130fd4	1648	*/
mbed_official	0:51ac1d130fd4	1649	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
mbed_official	0:51ac1d130fd4	1650	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
mbed_official	0:51ac1d130fd4	1651	return;
mbed_official	0:51ac1d130fd4	1652	}
mbed_official	0:51ac1d130fd4	1653	/* Something's wrong so drop it. */
mbed_official	0:51ac1d130fd4	1654	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
mbed_official	0:51ac1d130fd4	1655	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed_official	0:51ac1d130fd4	1656	/* No handler for this protocol so drop the packet. */
mbed_official	0:51ac1d130fd4	1657	PPPDEBUG(LOG_INFO,
mbed_official	0:51ac1d130fd4	1658	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
mbed_official	0:51ac1d130fd4	1659	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
mbed_official	0:51ac1d130fd4	1660	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
mbed_official	0:51ac1d130fd4	1661	break;
mbed_official	0:51ac1d130fd4	1662
mbed_official	0:51ac1d130fd4	1663	case PPP_IP: /* Internet Protocol */
mbed_official	0:51ac1d130fd4	1664	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
mbed_official	0:51ac1d130fd4	1665	if (pppControl[pd].netif.input) {
mbed_official	0:51ac1d130fd4	1666	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
mbed_official	0:51ac1d130fd4	1667	return;
mbed_official	0:51ac1d130fd4	1668	}
mbed_official	0:51ac1d130fd4	1669	break;
mbed_official	0:51ac1d130fd4	1670
mbed_official	0:51ac1d130fd4	1671	default: {
mbed_official	0:51ac1d130fd4	1672	struct protent *protp;
mbed_official	0:51ac1d130fd4	1673	int i;
mbed_official	0:51ac1d130fd4	1674
mbed_official	0:51ac1d130fd4	1675	/*
mbed_official	0:51ac1d130fd4	1676	* Upcall the proper protocol input routine.
mbed_official	0:51ac1d130fd4	1677	*/
mbed_official	0:51ac1d130fd4	1678	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
mbed_official	0:51ac1d130fd4	1679	if (protp->protocol == protocol && protp->enabled_flag) {
mbed_official	0:51ac1d130fd4	1680	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
mbed_official	0:51ac1d130fd4	1681	nb = pppSingleBuf(nb);
mbed_official	0:51ac1d130fd4	1682	(*protp->input)(pd, nb->payload, nb->len);
mbed_official	0:51ac1d130fd4	1683	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
mbed_official	0:51ac1d130fd4	1684	goto out;
mbed_official	0:51ac1d130fd4	1685	}
mbed_official	0:51ac1d130fd4	1686	}
mbed_official	0:51ac1d130fd4	1687
mbed_official	0:51ac1d130fd4	1688	/* No handler for this protocol so reject the packet. */
mbed_official	0:51ac1d130fd4	1689	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
mbed_official	0:51ac1d130fd4	1690	if (pbuf_header(nb, sizeof(protocol))) {
mbed_official	0:51ac1d130fd4	1691	LWIP_ASSERT("pbuf_header failed\n", 0);
mbed_official	0:51ac1d130fd4	1692	goto drop;
mbed_official	0:51ac1d130fd4	1693	}
mbed_official	0:51ac1d130fd4	1694	#if BYTE_ORDER == LITTLE_ENDIAN
mbed_official	0:51ac1d130fd4	1695	protocol = htons(protocol);
mbed_official	0:51ac1d130fd4	1696	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
mbed_official	0:51ac1d130fd4	1697	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
mbed_official	0:51ac1d130fd4	1698	lcp_sprotrej(pd, nb->payload, nb->len);
mbed_official	0:51ac1d130fd4	1699	}
mbed_official	0:51ac1d130fd4	1700	break;
mbed_official	0:51ac1d130fd4	1701	}
mbed_official	0:51ac1d130fd4	1702
mbed_official	0:51ac1d130fd4	1703	drop:
mbed_official	0:51ac1d130fd4	1704	LINK_STATS_INC(link.drop);
mbed_official	0:51ac1d130fd4	1705	snmp_inc_ifindiscards(&pppControl[pd].netif);
mbed_official	0:51ac1d130fd4	1706
mbed_official	0:51ac1d130fd4	1707	out:
mbed_official	0:51ac1d130fd4	1708	pbuf_free(nb);
mbed_official	0:51ac1d130fd4	1709	return;
mbed_official	0:51ac1d130fd4	1710	}
mbed_official	0:51ac1d130fd4	1711
mbed_official	0:51ac1d130fd4	1712	#if PPPOS_SUPPORT
mbed_official	0:51ac1d130fd4	1713	/*
mbed_official	0:51ac1d130fd4	1714	* Drop the input packet.
mbed_official	0:51ac1d130fd4	1715	*/
mbed_official	0:51ac1d130fd4	1716	static void
mbed_official	0:51ac1d130fd4	1717	pppDrop(PPPControlRx *pcrx)
mbed_official	0:51ac1d130fd4	1718	{
mbed_official	0:51ac1d130fd4	1719	if (pcrx->inHead != NULL) {
mbed_official	0:51ac1d130fd4	1720	#if 0
mbed_official	0:51ac1d130fd4	1721	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
mbed_official	0:51ac1d130fd4	1722	#endif
mbed_official	0:51ac1d130fd4	1723	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
mbed_official	0:51ac1d130fd4	1724	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
mbed_official	0:51ac1d130fd4	1725	pbuf_free(pcrx->inTail);
mbed_official	0:51ac1d130fd4	1726	}
mbed_official	0:51ac1d130fd4	1727	pbuf_free(pcrx->inHead);
mbed_official	0:51ac1d130fd4	1728	pcrx->inHead = NULL;
mbed_official	0:51ac1d130fd4	1729	pcrx->inTail = NULL;
mbed_official	0:51ac1d130fd4	1730	}
mbed_official	0:51ac1d130fd4	1731	#if VJ_SUPPORT
mbed_official	0:51ac1d130fd4	1732	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
mbed_official	0:51ac1d130fd4	1733	#endif /* VJ_SUPPORT */
mbed_official	0:51ac1d130fd4	1734
mbed_official	0:51ac1d130fd4	1735	LINK_STATS_INC(link.drop);
mbed_official	0:51ac1d130fd4	1736	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
mbed_official	0:51ac1d130fd4	1737	}
mbed_official	0:51ac1d130fd4	1738
mbed_official	0:51ac1d130fd4	1739	/** Pass received raw characters to PPPoS to be decoded. This function is
mbed_official	0:51ac1d130fd4	1740	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
mbed_official	0:51ac1d130fd4	1741	*
mbed_official	0:51ac1d130fd4	1742	* @param pd PPP descriptor index, returned by pppOpen()
mbed_official	0:51ac1d130fd4	1743	* @param data received data
mbed_official	0:51ac1d130fd4	1744	* @param len length of received data
mbed_official	0:51ac1d130fd4	1745	*/
mbed_official	0:51ac1d130fd4	1746	void
mbed_official	0:51ac1d130fd4	1747	pppos_input(int pd, u_char* data, int len)
mbed_official	0:51ac1d130fd4	1748	{
mbed_official	0:51ac1d130fd4	1749	pppInProc(&pppControl[pd].rx, data, len);
mbed_official	0:51ac1d130fd4	1750	}
mbed_official	0:51ac1d130fd4	1751
mbed_official	0:51ac1d130fd4	1752	/**
mbed_official	0:51ac1d130fd4	1753	* Process a received octet string.
mbed_official	0:51ac1d130fd4	1754	*/
mbed_official	0:51ac1d130fd4	1755	static void
mbed_official	0:51ac1d130fd4	1756	pppInProc(PPPControlRx pcrx, u_char s, int l)
mbed_official	0:51ac1d130fd4	1757	{
mbed_official	0:51ac1d130fd4	1758	struct pbuf *nextNBuf;
mbed_official	0:51ac1d130fd4	1759	u_char curChar;
mbed_official	0:51ac1d130fd4	1760	u_char escaped;
mbed_official	0:51ac1d130fd4	1761	SYS_ARCH_DECL_PROTECT(lev);
mbed_official	0:51ac1d130fd4	1762
mbed_official	0:51ac1d130fd4	1763	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
mbed_official	0:51ac1d130fd4	1764	while (l-- > 0) {
mbed_official	0:51ac1d130fd4	1765	curChar = *s++;
mbed_official	0:51ac1d130fd4	1766
mbed_official	0:51ac1d130fd4	1767	SYS_ARCH_PROTECT(lev);
mbed_official	0:51ac1d130fd4	1768	escaped = ESCAPE_P(pcrx->inACCM, curChar);
mbed_official	0:51ac1d130fd4	1769	SYS_ARCH_UNPROTECT(lev);
mbed_official	0:51ac1d130fd4	1770	/* Handle special characters. */
mbed_official	0:51ac1d130fd4	1771	if (escaped) {
mbed_official	0:51ac1d130fd4	1772	/* Check for escape sequences. */
mbed_official	0:51ac1d130fd4	1773	/* XXX Note that this does not handle an escaped 0x5d character which
mbed_official	0:51ac1d130fd4	1774	* would appear as an escape character. Since this is an ASCII ']'
mbed_official	0:51ac1d130fd4	1775	* and there is no reason that I know of to escape it, I won't complicate
mbed_official	0:51ac1d130fd4	1776	* the code to handle this case. GLL */
mbed_official	0:51ac1d130fd4	1777	if (curChar == PPP_ESCAPE) {
mbed_official	0:51ac1d130fd4	1778	pcrx->inEscaped = 1;
mbed_official	0:51ac1d130fd4	1779	/* Check for the flag character. */
mbed_official	0:51ac1d130fd4	1780	} else if (curChar == PPP_FLAG) {
mbed_official	0:51ac1d130fd4	1781	/* If this is just an extra flag character, ignore it. */
mbed_official	0:51ac1d130fd4	1782	if (pcrx->inState <= PDADDRESS) {
mbed_official	0:51ac1d130fd4	1783	/* ignore it */;
mbed_official	0:51ac1d130fd4	1784	/* If we haven't received the packet header, drop what has come in. */
mbed_official	0:51ac1d130fd4	1785	} else if (pcrx->inState < PDDATA) {
mbed_official	0:51ac1d130fd4	1786	PPPDEBUG(LOG_WARNING,
mbed_official	0:51ac1d130fd4	1787	("pppInProc[%d]: Dropping incomplete packet %d\n",
mbed_official	0:51ac1d130fd4	1788	pcrx->pd, pcrx->inState));
mbed_official	0:51ac1d130fd4	1789	LINK_STATS_INC(link.lenerr);
mbed_official	0:51ac1d130fd4	1790	pppDrop(pcrx);
mbed_official	0:51ac1d130fd4	1791	/* If the fcs is invalid, drop the packet. */
mbed_official	0:51ac1d130fd4	1792	} else if (pcrx->inFCS != PPP_GOODFCS) {
mbed_official	0:51ac1d130fd4	1793	PPPDEBUG(LOG_INFO,
mbed_official	0:51ac1d130fd4	1794	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
mbed_official	0:51ac1d130fd4	1795	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
mbed_official	0:51ac1d130fd4	1796	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
mbed_official	0:51ac1d130fd4	1797	LINK_STATS_INC(link.chkerr);
mbed_official	0:51ac1d130fd4	1798	pppDrop(pcrx);
mbed_official	0:51ac1d130fd4	1799	/* Otherwise it's a good packet so pass it on. */
mbed_official	0:51ac1d130fd4	1800	} else {
mbed_official	0:51ac1d130fd4	1801	struct pbuf *inp;
mbed_official	0:51ac1d130fd4	1802	/* Trim off the checksum. */
mbed_official	0:51ac1d130fd4	1803	if(pcrx->inTail->len >= 2) {
mbed_official	0:51ac1d130fd4	1804	pcrx->inTail->len -= 2;
mbed_official	0:51ac1d130fd4	1805
mbed_official	0:51ac1d130fd4	1806	pcrx->inTail->tot_len = pcrx->inTail->len;
mbed_official	0:51ac1d130fd4	1807	if (pcrx->inTail != pcrx->inHead) {
mbed_official	0:51ac1d130fd4	1808	pbuf_cat(pcrx->inHead, pcrx->inTail);
mbed_official	0:51ac1d130fd4	1809	}
mbed_official	0:51ac1d130fd4	1810	} else {
mbed_official	0:51ac1d130fd4	1811	pcrx->inTail->tot_len = pcrx->inTail->len;
mbed_official	0:51ac1d130fd4	1812	if (pcrx->inTail != pcrx->inHead) {
mbed_official	0:51ac1d130fd4	1813	pbuf_cat(pcrx->inHead, pcrx->inTail);
mbed_official	0:51ac1d130fd4	1814	}
mbed_official	0:51ac1d130fd4	1815
mbed_official	0:51ac1d130fd4	1816	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
mbed_official	0:51ac1d130fd4	1817	}
mbed_official	0:51ac1d130fd4	1818
mbed_official	0:51ac1d130fd4	1819	/* Dispatch the packet thereby consuming it. */
mbed_official	0:51ac1d130fd4	1820	inp = pcrx->inHead;
mbed_official	0:51ac1d130fd4	1821	/* Packet consumed, release our references. */
mbed_official	0:51ac1d130fd4	1822	pcrx->inHead = NULL;
mbed_official	0:51ac1d130fd4	1823	pcrx->inTail = NULL;
mbed_official	0:51ac1d130fd4	1824	#if PPP_INPROC_MULTITHREADED
mbed_official	0:51ac1d130fd4	1825	if(tcpip_callback_with_block(pppInput, inp, 0) != ERR_OK) {
mbed_official	0:51ac1d130fd4	1826	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
mbed_official	0:51ac1d130fd4	1827	pbuf_free(inp);
mbed_official	0:51ac1d130fd4	1828	LINK_STATS_INC(link.drop);
mbed_official	0:51ac1d130fd4	1829	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
mbed_official	0:51ac1d130fd4	1830	}
mbed_official	0:51ac1d130fd4	1831	#else /* PPP_INPROC_MULTITHREADED */
mbed_official	0:51ac1d130fd4	1832	pppInput(inp);
mbed_official	0:51ac1d130fd4	1833	#endif /* PPP_INPROC_MULTITHREADED */
mbed_official	0:51ac1d130fd4	1834	}
mbed_official	0:51ac1d130fd4	1835
mbed_official	0:51ac1d130fd4	1836	/* Prepare for a new packet. */
mbed_official	0:51ac1d130fd4	1837	pcrx->inFCS = PPP_INITFCS;
mbed_official	0:51ac1d130fd4	1838	pcrx->inState = PDADDRESS;
mbed_official	0:51ac1d130fd4	1839	pcrx->inEscaped = 0;
mbed_official	0:51ac1d130fd4	1840	/* Other characters are usually control characters that may have
mbed_official	0:51ac1d130fd4	1841	* been inserted by the physical layer so here we just drop them. */
mbed_official	0:51ac1d130fd4	1842	} else {
mbed_official	0:51ac1d130fd4	1843	PPPDEBUG(LOG_WARNING,
mbed_official	0:51ac1d130fd4	1844	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
mbed_official	0:51ac1d130fd4	1845	}
mbed_official	0:51ac1d130fd4	1846	/* Process other characters. */
mbed_official	0:51ac1d130fd4	1847	} else {
mbed_official	0:51ac1d130fd4	1848	/* Unencode escaped characters. */
mbed_official	0:51ac1d130fd4	1849	if (pcrx->inEscaped) {
mbed_official	0:51ac1d130fd4	1850	pcrx->inEscaped = 0;
mbed_official	0:51ac1d130fd4	1851	curChar ^= PPP_TRANS;
mbed_official	0:51ac1d130fd4	1852	}
mbed_official	0:51ac1d130fd4	1853
mbed_official	0:51ac1d130fd4	1854	/* Process character relative to current state. */
mbed_official	0:51ac1d130fd4	1855	switch(pcrx->inState) {
mbed_official	0:51ac1d130fd4	1856	case PDIDLE: /* Idle state - waiting. */
mbed_official	0:51ac1d130fd4	1857	/* Drop the character if it's not 0xff
mbed_official	0:51ac1d130fd4	1858	* we would have processed a flag character above. */
mbed_official	0:51ac1d130fd4	1859	if (curChar != PPP_ALLSTATIONS) {
mbed_official	0:51ac1d130fd4	1860	break;
mbed_official	0:51ac1d130fd4	1861	}
mbed_official	0:51ac1d130fd4	1862
mbed_official	0:51ac1d130fd4	1863	/* Fall through */
mbed_official	0:51ac1d130fd4	1864	case PDSTART: /* Process start flag. */
mbed_official	0:51ac1d130fd4	1865	/* Prepare for a new packet. */
mbed_official	0:51ac1d130fd4	1866	pcrx->inFCS = PPP_INITFCS;
mbed_official	0:51ac1d130fd4	1867
mbed_official	0:51ac1d130fd4	1868	/* Fall through */
mbed_official	0:51ac1d130fd4	1869	case PDADDRESS: /* Process address field. */
mbed_official	0:51ac1d130fd4	1870	if (curChar == PPP_ALLSTATIONS) {
mbed_official	0:51ac1d130fd4	1871	pcrx->inState = PDCONTROL;
mbed_official	0:51ac1d130fd4	1872	break;
mbed_official	0:51ac1d130fd4	1873	}
mbed_official	0:51ac1d130fd4	1874	/* Else assume compressed address and control fields so
mbed_official	0:51ac1d130fd4	1875	* fall through to get the protocol... */
mbed_official	0:51ac1d130fd4	1876	case PDCONTROL: /* Process control field. */
mbed_official	0:51ac1d130fd4	1877	/* If we don't get a valid control code, restart. */
mbed_official	0:51ac1d130fd4	1878	if (curChar == PPP_UI) {
mbed_official	0:51ac1d130fd4	1879	pcrx->inState = PDPROTOCOL1;
mbed_official	0:51ac1d130fd4	1880	break;
mbed_official	0:51ac1d130fd4	1881	}
mbed_official	0:51ac1d130fd4	1882	#if 0
mbed_official	0:51ac1d130fd4	1883	else {
mbed_official	0:51ac1d130fd4	1884	PPPDEBUG(LOG_WARNING,
mbed_official	0:51ac1d130fd4	1885	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
mbed_official	0:51ac1d130fd4	1886	pcrx->inState = PDSTART;
mbed_official	0:51ac1d130fd4	1887	}
mbed_official	0:51ac1d130fd4	1888	#endif
mbed_official	0:51ac1d130fd4	1889	case PDPROTOCOL1: /* Process protocol field 1. */
mbed_official	0:51ac1d130fd4	1890	/* If the lower bit is set, this is the end of the protocol
mbed_official	0:51ac1d130fd4	1891	* field. */
mbed_official	0:51ac1d130fd4	1892	if (curChar & 1) {
mbed_official	0:51ac1d130fd4	1893	pcrx->inProtocol = curChar;
mbed_official	0:51ac1d130fd4	1894	pcrx->inState = PDDATA;
mbed_official	0:51ac1d130fd4	1895	} else {
mbed_official	0:51ac1d130fd4	1896	pcrx->inProtocol = (u_int)curChar << 8;
mbed_official	0:51ac1d130fd4	1897	pcrx->inState = PDPROTOCOL2;
mbed_official	0:51ac1d130fd4	1898	}
mbed_official	0:51ac1d130fd4	1899	break;
mbed_official	0:51ac1d130fd4	1900	case PDPROTOCOL2: /* Process protocol field 2. */
mbed_official	0:51ac1d130fd4	1901	pcrx->inProtocol \|= curChar;
mbed_official	0:51ac1d130fd4	1902	pcrx->inState = PDDATA;
mbed_official	0:51ac1d130fd4	1903	break;
mbed_official	0:51ac1d130fd4	1904	case PDDATA: /* Process data byte. */
mbed_official	0:51ac1d130fd4	1905	/* Make space to receive processed data. */
mbed_official	0:51ac1d130fd4	1906	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
mbed_official	0:51ac1d130fd4	1907	if (pcrx->inTail != NULL) {
mbed_official	0:51ac1d130fd4	1908	pcrx->inTail->tot_len = pcrx->inTail->len;
mbed_official	0:51ac1d130fd4	1909	if (pcrx->inTail != pcrx->inHead) {
mbed_official	0:51ac1d130fd4	1910	pbuf_cat(pcrx->inHead, pcrx->inTail);
mbed_official	0:51ac1d130fd4	1911	/* give up the inTail reference now */
mbed_official	0:51ac1d130fd4	1912	pcrx->inTail = NULL;
mbed_official	0:51ac1d130fd4	1913	}
mbed_official	0:51ac1d130fd4	1914	}
mbed_official	0:51ac1d130fd4	1915	/* If we haven't started a packet, we need a packet header. */
mbed_official	0:51ac1d130fd4	1916	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
mbed_official	0:51ac1d130fd4	1917	if (nextNBuf == NULL) {
mbed_official	0:51ac1d130fd4	1918	/* No free buffers. Drop the input packet and let the
mbed_official	0:51ac1d130fd4	1919	* higher layers deal with it. Continue processing
mbed_official	0:51ac1d130fd4	1920	* the received pbuf chain in case a new packet starts. */
mbed_official	0:51ac1d130fd4	1921	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
mbed_official	0:51ac1d130fd4	1922	LINK_STATS_INC(link.memerr);
mbed_official	0:51ac1d130fd4	1923	pppDrop(pcrx);
mbed_official	0:51ac1d130fd4	1924	pcrx->inState = PDSTART; /* Wait for flag sequence. */
mbed_official	0:51ac1d130fd4	1925	break;
mbed_official	0:51ac1d130fd4	1926	}
mbed_official	0:51ac1d130fd4	1927	if (pcrx->inHead == NULL) {
mbed_official	0:51ac1d130fd4	1928	struct pppInputHeader *pih = nextNBuf->payload;
mbed_official	0:51ac1d130fd4	1929
mbed_official	0:51ac1d130fd4	1930	pih->unit = pcrx->pd;
mbed_official	0:51ac1d130fd4	1931	pih->proto = pcrx->inProtocol;
mbed_official	0:51ac1d130fd4	1932
mbed_official	0:51ac1d130fd4	1933	nextNBuf->len += sizeof(*pih);
mbed_official	0:51ac1d130fd4	1934
mbed_official	0:51ac1d130fd4	1935	pcrx->inHead = nextNBuf;
mbed_official	0:51ac1d130fd4	1936	}
mbed_official	0:51ac1d130fd4	1937	pcrx->inTail = nextNBuf;
mbed_official	0:51ac1d130fd4	1938	}
mbed_official	0:51ac1d130fd4	1939	/* Load character into buffer. */
mbed_official	0:51ac1d130fd4	1940	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
mbed_official	0:51ac1d130fd4	1941	break;
mbed_official	0:51ac1d130fd4	1942	}
mbed_official	0:51ac1d130fd4	1943
mbed_official	0:51ac1d130fd4	1944	/* update the frame check sequence number. */
mbed_official	0:51ac1d130fd4	1945	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
mbed_official	0:51ac1d130fd4	1946	}
mbed_official	0:51ac1d130fd4	1947	} /* while (l-- > 0), all bytes processed */
mbed_official	0:51ac1d130fd4	1948
mbed_official	0:51ac1d130fd4	1949	avRandomize();
mbed_official	0:51ac1d130fd4	1950	}
mbed_official	0:51ac1d130fd4	1951	#endif /* PPPOS_SUPPORT */
mbed_official	0:51ac1d130fd4	1952
mbed_official	0:51ac1d130fd4	1953	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	1954	void
mbed_official	0:51ac1d130fd4	1955	pppInProcOverEthernet(int pd, struct pbuf *pb)
mbed_official	0:51ac1d130fd4	1956	{
mbed_official	0:51ac1d130fd4	1957	struct pppInputHeader *pih;
mbed_official	0:51ac1d130fd4	1958	u16_t inProtocol;
mbed_official	0:51ac1d130fd4	1959
mbed_official	0:51ac1d130fd4	1960	if(pb->len < sizeof(inProtocol)) {
mbed_official	0:51ac1d130fd4	1961	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
mbed_official	0:51ac1d130fd4	1962	goto drop;
mbed_official	0:51ac1d130fd4	1963	}
mbed_official	0:51ac1d130fd4	1964
mbed_official	0:51ac1d130fd4	1965	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
mbed_official	0:51ac1d130fd4	1966
mbed_official	0:51ac1d130fd4	1967	/* make room for pppInputHeader - should not fail */
mbed_official	0:51ac1d130fd4	1968	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
mbed_official	0:51ac1d130fd4	1969	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
mbed_official	0:51ac1d130fd4	1970	goto drop;
mbed_official	0:51ac1d130fd4	1971	}
mbed_official	0:51ac1d130fd4	1972
mbed_official	0:51ac1d130fd4	1973	pih = pb->payload;
mbed_official	0:51ac1d130fd4	1974
mbed_official	0:51ac1d130fd4	1975	pih->unit = pd;
mbed_official	0:51ac1d130fd4	1976	pih->proto = inProtocol;
mbed_official	0:51ac1d130fd4	1977
mbed_official	0:51ac1d130fd4	1978	/* Dispatch the packet thereby consuming it. */
mbed_official	0:51ac1d130fd4	1979	pppInput(pb);
mbed_official	0:51ac1d130fd4	1980	return;
mbed_official	0:51ac1d130fd4	1981
mbed_official	0:51ac1d130fd4	1982	drop:
mbed_official	0:51ac1d130fd4	1983	LINK_STATS_INC(link.drop);
mbed_official	0:51ac1d130fd4	1984	snmp_inc_ifindiscards(&pppControl[pd].netif);
mbed_official	0:51ac1d130fd4	1985	pbuf_free(pb);
mbed_official	0:51ac1d130fd4	1986	return;
mbed_official	0:51ac1d130fd4	1987	}
mbed_official	0:51ac1d130fd4	1988	#endif /* PPPOE_SUPPORT */
mbed_official	0:51ac1d130fd4	1989
mbed_official	0:51ac1d130fd4	1990	#if LWIP_NETIF_STATUS_CALLBACK
mbed_official	0:51ac1d130fd4	1991	/** Set the status callback of a PPP's netif
mbed_official	0:51ac1d130fd4	1992	*
mbed_official	0:51ac1d130fd4	1993	* @param pd The PPP descriptor returned by pppOpen()
mbed_official	0:51ac1d130fd4	1994	* @param status_callback pointer to the status callback function
mbed_official	0:51ac1d130fd4	1995	*
mbed_official	0:51ac1d130fd4	1996	* @see netif_set_status_callback
mbed_official	0:51ac1d130fd4	1997	*/
mbed_official	0:51ac1d130fd4	1998	void
mbed_official	0:51ac1d130fd4	1999	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
mbed_official	0:51ac1d130fd4	2000	{
mbed_official	0:51ac1d130fd4	2001	netif_set_status_callback(&pppControl[pd].netif, status_callback);
mbed_official	0:51ac1d130fd4	2002	}
mbed_official	0:51ac1d130fd4	2003	#endif /* LWIP_NETIF_STATUS_CALLBACK */
mbed_official	0:51ac1d130fd4	2004
mbed_official	0:51ac1d130fd4	2005	#if LWIP_NETIF_LINK_CALLBACK
mbed_official	0:51ac1d130fd4	2006	/** Set the link callback of a PPP's netif
mbed_official	0:51ac1d130fd4	2007	*
mbed_official	0:51ac1d130fd4	2008	* @param pd The PPP descriptor returned by pppOpen()
mbed_official	0:51ac1d130fd4	2009	* @param link_callback pointer to the link callback function
mbed_official	0:51ac1d130fd4	2010	*
mbed_official	0:51ac1d130fd4	2011	* @see netif_set_link_callback
mbed_official	0:51ac1d130fd4	2012	*/
mbed_official	0:51ac1d130fd4	2013	void
mbed_official	0:51ac1d130fd4	2014	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
mbed_official	0:51ac1d130fd4	2015	{
mbed_official	0:51ac1d130fd4	2016	netif_set_link_callback(&pppControl[pd].netif, link_callback);
mbed_official	0:51ac1d130fd4	2017	}
mbed_official	0:51ac1d130fd4	2018	#endif /* LWIP_NETIF_LINK_CALLBACK */
mbed_official	0:51ac1d130fd4	2019
mbed_official	0:51ac1d130fd4	2020	#endif /* PPP_SUPPORT */

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Type:	Library
Created:	07 Apr 2015
Imports:	1
Forks:	0
Commits:	31
Dependents:	1
Dependencies:	0
Followers:	6

netif/ppp/ppp.c@0:51ac1d130fd4, 2012-06-22 (annotated)

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