IBMIoTClientEthernetExample - Port to C027 (using AppShield and Ethernet)

u-blox » Code » IBMIoTClientEthernetExample

u-blox / Mbed 2 deprecated IBMIoTClientEthernetExample

Port to C027 (using AppShield and Ethernet)

Dependencies: C12832 EthernetInterface LM75B MMA7660 MQTT mbed-rtos mbed

Fork of IBMIoTClientEthernetExample by IBM Watson IoT

EthernetInterface/lwip/netif/ppp/ppp.c@6:37b6d0d56190, 2014-08-20 (annotated)

Committer:: samdanbury
Date:: Wed Aug 20 12:45:14 2014 +0000
Revision:: 6:37b6d0d56190

Code completely changed to improve the structure, flow and memory usage of the application

Who changed what in which revision?

User	Revision	Line number	New contents of line
samdanbury	6:37b6d0d56190	1	/*****************************************************************************
samdanbury	6:37b6d0d56190	2	* ppp.c - Network Point to Point Protocol program file.
samdanbury	6:37b6d0d56190	3	*
samdanbury	6:37b6d0d56190	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
samdanbury	6:37b6d0d56190	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
samdanbury	6:37b6d0d56190	6	*
samdanbury	6:37b6d0d56190	7	* The authors hereby grant permission to use, copy, modify, distribute,
samdanbury	6:37b6d0d56190	8	* and license this software and its documentation for any purpose, provided
samdanbury	6:37b6d0d56190	9	* that existing copyright notices are retained in all copies and that this
samdanbury	6:37b6d0d56190	10	* notice and the following disclaimer are included verbatim in any
samdanbury	6:37b6d0d56190	11	* distributions. No written agreement, license, or royalty fee is required
samdanbury	6:37b6d0d56190	12	* for any of the authorized uses.
samdanbury	6:37b6d0d56190	13	*
samdanbury	6:37b6d0d56190	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
samdanbury	6:37b6d0d56190	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
samdanbury	6:37b6d0d56190	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
samdanbury	6:37b6d0d56190	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
samdanbury	6:37b6d0d56190	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
samdanbury	6:37b6d0d56190	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
samdanbury	6:37b6d0d56190	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
samdanbury	6:37b6d0d56190	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
samdanbury	6:37b6d0d56190	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
samdanbury	6:37b6d0d56190	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
samdanbury	6:37b6d0d56190	24	*
samdanbury	6:37b6d0d56190	25	******************************************************************************
samdanbury	6:37b6d0d56190	26	* REVISION HISTORY
samdanbury	6:37b6d0d56190	27	*
samdanbury	6:37b6d0d56190	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
samdanbury	6:37b6d0d56190	29	* Ported to lwIP.
samdanbury	6:37b6d0d56190	30	* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
samdanbury	6:37b6d0d56190	31	* Original.
samdanbury	6:37b6d0d56190	32	*****************************************************************************/
samdanbury	6:37b6d0d56190	33
samdanbury	6:37b6d0d56190	34	/*
samdanbury	6:37b6d0d56190	35	* ppp_defs.h - PPP definitions.
samdanbury	6:37b6d0d56190	36	*
samdanbury	6:37b6d0d56190	37	* if_pppvar.h - private structures and declarations for PPP.
samdanbury	6:37b6d0d56190	38	*
samdanbury	6:37b6d0d56190	39	* Copyright (c) 1994 The Australian National University.
samdanbury	6:37b6d0d56190	40	* All rights reserved.
samdanbury	6:37b6d0d56190	41	*
samdanbury	6:37b6d0d56190	42	* Permission to use, copy, modify, and distribute this software and its
samdanbury	6:37b6d0d56190	43	* documentation is hereby granted, provided that the above copyright
samdanbury	6:37b6d0d56190	44	* notice appears in all copies. This software is provided without any
samdanbury	6:37b6d0d56190	45	* warranty, express or implied. The Australian National University
samdanbury	6:37b6d0d56190	46	* makes no representations about the suitability of this software for
samdanbury	6:37b6d0d56190	47	* any purpose.
samdanbury	6:37b6d0d56190	48	*
samdanbury	6:37b6d0d56190	49	* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
samdanbury	6:37b6d0d56190	50	* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
samdanbury	6:37b6d0d56190	51	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
samdanbury	6:37b6d0d56190	52	* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
samdanbury	6:37b6d0d56190	53	* OF SUCH DAMAGE.
samdanbury	6:37b6d0d56190	54	*
samdanbury	6:37b6d0d56190	55	* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
samdanbury	6:37b6d0d56190	56	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
samdanbury	6:37b6d0d56190	57	* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
samdanbury	6:37b6d0d56190	58	* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
samdanbury	6:37b6d0d56190	59	* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
samdanbury	6:37b6d0d56190	60	* OR MODIFICATIONS.
samdanbury	6:37b6d0d56190	61	*/
samdanbury	6:37b6d0d56190	62
samdanbury	6:37b6d0d56190	63	/*
samdanbury	6:37b6d0d56190	64	* if_ppp.h - Point-to-Point Protocol definitions.
samdanbury	6:37b6d0d56190	65	*
samdanbury	6:37b6d0d56190	66	* Copyright (c) 1989 Carnegie Mellon University.
samdanbury	6:37b6d0d56190	67	* All rights reserved.
samdanbury	6:37b6d0d56190	68	*
samdanbury	6:37b6d0d56190	69	* Redistribution and use in source and binary forms are permitted
samdanbury	6:37b6d0d56190	70	* provided that the above copyright notice and this paragraph are
samdanbury	6:37b6d0d56190	71	* duplicated in all such forms and that any documentation,
samdanbury	6:37b6d0d56190	72	* advertising materials, and other materials related to such
samdanbury	6:37b6d0d56190	73	* distribution and use acknowledge that the software was developed
samdanbury	6:37b6d0d56190	74	* by Carnegie Mellon University. The name of the
samdanbury	6:37b6d0d56190	75	* University may not be used to endorse or promote products derived
samdanbury	6:37b6d0d56190	76	* from this software without specific prior written permission.
samdanbury	6:37b6d0d56190	77	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
samdanbury	6:37b6d0d56190	78	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
samdanbury	6:37b6d0d56190	79	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
samdanbury	6:37b6d0d56190	80	*/
samdanbury	6:37b6d0d56190	81
samdanbury	6:37b6d0d56190	82	#include "lwip/opt.h"
samdanbury	6:37b6d0d56190	83
samdanbury	6:37b6d0d56190	84	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
samdanbury	6:37b6d0d56190	85
samdanbury	6:37b6d0d56190	86	#include "lwip/ip.h" /* for ip_input() */
samdanbury	6:37b6d0d56190	87
samdanbury	6:37b6d0d56190	88	#include "ppp.h"
samdanbury	6:37b6d0d56190	89	#include "pppdebug.h"
samdanbury	6:37b6d0d56190	90
samdanbury	6:37b6d0d56190	91	#include "randm.h"
samdanbury	6:37b6d0d56190	92	#include "fsm.h"
samdanbury	6:37b6d0d56190	93	#if PAP_SUPPORT
samdanbury	6:37b6d0d56190	94	#include "pap.h"
samdanbury	6:37b6d0d56190	95	#endif /* PAP_SUPPORT */
samdanbury	6:37b6d0d56190	96	#if CHAP_SUPPORT
samdanbury	6:37b6d0d56190	97	#include "chap.h"
samdanbury	6:37b6d0d56190	98	#endif /* CHAP_SUPPORT */
samdanbury	6:37b6d0d56190	99	#include "ipcp.h"
samdanbury	6:37b6d0d56190	100	#include "lcp.h"
samdanbury	6:37b6d0d56190	101	#include "magic.h"
samdanbury	6:37b6d0d56190	102	#include "auth.h"
samdanbury	6:37b6d0d56190	103	#if VJ_SUPPORT
samdanbury	6:37b6d0d56190	104	#include "vj.h"
samdanbury	6:37b6d0d56190	105	#endif /* VJ_SUPPORT */
samdanbury	6:37b6d0d56190	106	#if PPPOE_SUPPORT
samdanbury	6:37b6d0d56190	107	#include "netif/ppp_oe.h"
samdanbury	6:37b6d0d56190	108	#endif /* PPPOE_SUPPORT */
samdanbury	6:37b6d0d56190	109
samdanbury	6:37b6d0d56190	110	#include "lwip/tcpip.h"
samdanbury	6:37b6d0d56190	111	#include "lwip/api.h"
samdanbury	6:37b6d0d56190	112	#include "lwip/snmp.h"
samdanbury	6:37b6d0d56190	113
samdanbury	6:37b6d0d56190	114	#include <string.h>
samdanbury	6:37b6d0d56190	115
samdanbury	6:37b6d0d56190	116	/*************************/
samdanbury	6:37b6d0d56190	117	/* LOCAL DEFINITIONS */
samdanbury	6:37b6d0d56190	118	/*************************/
samdanbury	6:37b6d0d56190	119
samdanbury	6:37b6d0d56190	120	/** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
samdanbury	6:37b6d0d56190	121	* Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
samdanbury	6:37b6d0d56190	122	* Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
samdanbury	6:37b6d0d56190	123	*/
samdanbury	6:37b6d0d56190	124	#ifndef PPP_INPROC_MULTITHREADED
samdanbury	6:37b6d0d56190	125	#define PPP_INPROC_MULTITHREADED (NO_SYS==0)
samdanbury	6:37b6d0d56190	126	#endif
samdanbury	6:37b6d0d56190	127
samdanbury	6:37b6d0d56190	128	/** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
samdanbury	6:37b6d0d56190	129	* Default is 0: call pppos_input() for received raw characters, charcater
samdanbury	6:37b6d0d56190	130	* reception is up to the port */
samdanbury	6:37b6d0d56190	131	#ifndef PPP_INPROC_OWNTHREAD
samdanbury	6:37b6d0d56190	132	#define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
samdanbury	6:37b6d0d56190	133	#endif
samdanbury	6:37b6d0d56190	134
samdanbury	6:37b6d0d56190	135	#if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
samdanbury	6:37b6d0d56190	136	#error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
samdanbury	6:37b6d0d56190	137	#endif
samdanbury	6:37b6d0d56190	138
samdanbury	6:37b6d0d56190	139	/*
samdanbury	6:37b6d0d56190	140	* The basic PPP frame.
samdanbury	6:37b6d0d56190	141	*/
samdanbury	6:37b6d0d56190	142	#define PPP_ADDRESS(p) (((u_char *)(p))[0])
samdanbury	6:37b6d0d56190	143	#define PPP_CONTROL(p) (((u_char *)(p))[1])
samdanbury	6:37b6d0d56190	144	#define PPP_PROTOCOL(p) ((((u_char )(p))[2] << 8) + ((u_char )(p))[3])
samdanbury	6:37b6d0d56190	145
samdanbury	6:37b6d0d56190	146	/* PPP packet parser states. Current state indicates operation yet to be
samdanbury	6:37b6d0d56190	147	* completed. */
samdanbury	6:37b6d0d56190	148	typedef enum {
samdanbury	6:37b6d0d56190	149	PDIDLE = 0, /* Idle state - waiting. */
samdanbury	6:37b6d0d56190	150	PDSTART, /* Process start flag. */
samdanbury	6:37b6d0d56190	151	PDADDRESS, /* Process address field. */
samdanbury	6:37b6d0d56190	152	PDCONTROL, /* Process control field. */
samdanbury	6:37b6d0d56190	153	PDPROTOCOL1, /* Process protocol field 1. */
samdanbury	6:37b6d0d56190	154	PDPROTOCOL2, /* Process protocol field 2. */
samdanbury	6:37b6d0d56190	155	PDDATA /* Process data byte. */
samdanbury	6:37b6d0d56190	156	} PPPDevStates;
samdanbury	6:37b6d0d56190	157
samdanbury	6:37b6d0d56190	158	#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
samdanbury	6:37b6d0d56190	159
samdanbury	6:37b6d0d56190	160	/************************/
samdanbury	6:37b6d0d56190	161	/* LOCAL DATA TYPES */
samdanbury	6:37b6d0d56190	162	/************************/
samdanbury	6:37b6d0d56190	163
samdanbury	6:37b6d0d56190	164	/** RX buffer size: this may be configured smaller! */
samdanbury	6:37b6d0d56190	165	#ifndef PPPOS_RX_BUFSIZE
samdanbury	6:37b6d0d56190	166	#define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
samdanbury	6:37b6d0d56190	167	#endif
samdanbury	6:37b6d0d56190	168
samdanbury	6:37b6d0d56190	169	typedef struct PPPControlRx_s {
samdanbury	6:37b6d0d56190	170	/** unit number / ppp descriptor */
samdanbury	6:37b6d0d56190	171	int pd;
samdanbury	6:37b6d0d56190	172	/** the rx file descriptor */
samdanbury	6:37b6d0d56190	173	sio_fd_t fd;
samdanbury	6:37b6d0d56190	174	/** receive buffer - encoded data is stored here */
samdanbury	6:37b6d0d56190	175	u_char rxbuf[PPPOS_RX_BUFSIZE];
samdanbury	6:37b6d0d56190	176
samdanbury	6:37b6d0d56190	177	/* The input packet. */
samdanbury	6:37b6d0d56190	178	struct pbuf inHead, inTail;
samdanbury	6:37b6d0d56190	179
samdanbury	6:37b6d0d56190	180	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	181	u16_t inProtocol; /* The input protocol code. */
samdanbury	6:37b6d0d56190	182	u16_t inFCS; /* Input Frame Check Sequence value. */
samdanbury	6:37b6d0d56190	183	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	184	PPPDevStates inState; /* The input process state. */
samdanbury	6:37b6d0d56190	185	char inEscaped; /* Escape next character. */
samdanbury	6:37b6d0d56190	186	ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
samdanbury	6:37b6d0d56190	187	} PPPControlRx;
samdanbury	6:37b6d0d56190	188
samdanbury	6:37b6d0d56190	189	/*
samdanbury	6:37b6d0d56190	190	* PPP interface control block.
samdanbury	6:37b6d0d56190	191	*/
samdanbury	6:37b6d0d56190	192	typedef struct PPPControl_s {
samdanbury	6:37b6d0d56190	193	PPPControlRx rx;
samdanbury	6:37b6d0d56190	194	char openFlag; /* True when in use. */
samdanbury	6:37b6d0d56190	195	#if PPPOE_SUPPORT
samdanbury	6:37b6d0d56190	196	struct netif *ethif;
samdanbury	6:37b6d0d56190	197	struct pppoe_softc *pppoe_sc;
samdanbury	6:37b6d0d56190	198	#endif /* PPPOE_SUPPORT */
samdanbury	6:37b6d0d56190	199	int if_up; /* True when the interface is up. */
samdanbury	6:37b6d0d56190	200	int errCode; /* Code indicating why interface is down. */
samdanbury	6:37b6d0d56190	201	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	202	sio_fd_t fd; /* File device ID of port. */
samdanbury	6:37b6d0d56190	203	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	204	u16_t mtu; /* Peer's mru */
samdanbury	6:37b6d0d56190	205	int pcomp; /* Does peer accept protocol compression? */
samdanbury	6:37b6d0d56190	206	int accomp; /* Does peer accept addr/ctl compression? */
samdanbury	6:37b6d0d56190	207	u_long lastXMit; /* Time of last transmission. */
samdanbury	6:37b6d0d56190	208	ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
samdanbury	6:37b6d0d56190	209	#if PPPOS_SUPPORT && VJ_SUPPORT
samdanbury	6:37b6d0d56190	210	int vjEnabled; /* Flag indicating VJ compression enabled. */
samdanbury	6:37b6d0d56190	211	struct vjcompress vjComp; /* Van Jacobson compression header. */
samdanbury	6:37b6d0d56190	212	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
samdanbury	6:37b6d0d56190	213
samdanbury	6:37b6d0d56190	214	struct netif netif;
samdanbury	6:37b6d0d56190	215
samdanbury	6:37b6d0d56190	216	struct ppp_addrs addrs;
samdanbury	6:37b6d0d56190	217
samdanbury	6:37b6d0d56190	218	void (linkStatusCB)(void ctx, int errCode, void *arg);
samdanbury	6:37b6d0d56190	219	void *linkStatusCtx;
samdanbury	6:37b6d0d56190	220
samdanbury	6:37b6d0d56190	221	} PPPControl;
samdanbury	6:37b6d0d56190	222
samdanbury	6:37b6d0d56190	223
samdanbury	6:37b6d0d56190	224	/*
samdanbury	6:37b6d0d56190	225	* Ioctl definitions.
samdanbury	6:37b6d0d56190	226	*/
samdanbury	6:37b6d0d56190	227
samdanbury	6:37b6d0d56190	228	struct npioctl {
samdanbury	6:37b6d0d56190	229	int protocol; /* PPP procotol, e.g. PPP_IP */
samdanbury	6:37b6d0d56190	230	enum NPmode mode;
samdanbury	6:37b6d0d56190	231	};
samdanbury	6:37b6d0d56190	232
samdanbury	6:37b6d0d56190	233
samdanbury	6:37b6d0d56190	234
samdanbury	6:37b6d0d56190	235	/***********************************/
samdanbury	6:37b6d0d56190	236	/* LOCAL FUNCTION DECLARATIONS */
samdanbury	6:37b6d0d56190	237	/***********************************/
samdanbury	6:37b6d0d56190	238	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	239	#if PPP_INPROC_OWNTHREAD
samdanbury	6:37b6d0d56190	240	static void pppInputThread(void *arg);
samdanbury	6:37b6d0d56190	241	#endif /* PPP_INPROC_OWNTHREAD */
samdanbury	6:37b6d0d56190	242	static void pppDrop(PPPControlRx *pcrx);
samdanbury	6:37b6d0d56190	243	static void pppInProc(PPPControlRx pcrx, u_char s, int l);
samdanbury	6:37b6d0d56190	244	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	245
samdanbury	6:37b6d0d56190	246
samdanbury	6:37b6d0d56190	247	/******************************/
samdanbury	6:37b6d0d56190	248	/* PUBLIC DATA STRUCTURES */
samdanbury	6:37b6d0d56190	249	/******************************/
samdanbury	6:37b6d0d56190	250	u_long subnetMask;
samdanbury	6:37b6d0d56190	251
samdanbury	6:37b6d0d56190	252	static PPPControl pppControl[NUM_PPP] __attribute((section("AHBSRAM1"))); /* The PPP interface control blocks. */
samdanbury	6:37b6d0d56190	253
samdanbury	6:37b6d0d56190	254	sys_mbox_t pppMbox; //Used to signal PPP thread that a PPP session begins
samdanbury	6:37b6d0d56190	255
samdanbury	6:37b6d0d56190	256	/*
samdanbury	6:37b6d0d56190	257	* PPP Data Link Layer "protocol" table.
samdanbury	6:37b6d0d56190	258	* One entry per supported protocol.
samdanbury	6:37b6d0d56190	259	* The last entry must be NULL.
samdanbury	6:37b6d0d56190	260	*/
samdanbury	6:37b6d0d56190	261	struct protent *ppp_protocols[] = {
samdanbury	6:37b6d0d56190	262	&lcp_protent,
samdanbury	6:37b6d0d56190	263	#if PAP_SUPPORT
samdanbury	6:37b6d0d56190	264	&pap_protent,
samdanbury	6:37b6d0d56190	265	#endif /* PAP_SUPPORT */
samdanbury	6:37b6d0d56190	266	#if CHAP_SUPPORT
samdanbury	6:37b6d0d56190	267	&chap_protent,
samdanbury	6:37b6d0d56190	268	#endif /* CHAP_SUPPORT */
samdanbury	6:37b6d0d56190	269	#if CBCP_SUPPORT
samdanbury	6:37b6d0d56190	270	&cbcp_protent,
samdanbury	6:37b6d0d56190	271	#endif /* CBCP_SUPPORT */
samdanbury	6:37b6d0d56190	272	&ipcp_protent,
samdanbury	6:37b6d0d56190	273	#if CCP_SUPPORT
samdanbury	6:37b6d0d56190	274	&ccp_protent,
samdanbury	6:37b6d0d56190	275	#endif /* CCP_SUPPORT */
samdanbury	6:37b6d0d56190	276	NULL
samdanbury	6:37b6d0d56190	277	};
samdanbury	6:37b6d0d56190	278
samdanbury	6:37b6d0d56190	279
samdanbury	6:37b6d0d56190	280	/*
samdanbury	6:37b6d0d56190	281	* Buffers for outgoing packets. This must be accessed only from the appropriate
samdanbury	6:37b6d0d56190	282	* PPP task so that it doesn't need to be protected to avoid collisions.
samdanbury	6:37b6d0d56190	283	*/
samdanbury	6:37b6d0d56190	284	u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] __attribute((section("AHBSRAM1")));
samdanbury	6:37b6d0d56190	285
samdanbury	6:37b6d0d56190	286
samdanbury	6:37b6d0d56190	287	/*****************************/
samdanbury	6:37b6d0d56190	288	/* LOCAL DATA STRUCTURES */
samdanbury	6:37b6d0d56190	289	/*****************************/
samdanbury	6:37b6d0d56190	290
samdanbury	6:37b6d0d56190	291	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	292	/*
samdanbury	6:37b6d0d56190	293	* FCS lookup table as calculated by genfcstab.
samdanbury	6:37b6d0d56190	294	* @todo: smaller, slower implementation for lower memory footprint?
samdanbury	6:37b6d0d56190	295	*/
samdanbury	6:37b6d0d56190	296	static const u_short fcstab[256] = {
samdanbury	6:37b6d0d56190	297	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
samdanbury	6:37b6d0d56190	298	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
samdanbury	6:37b6d0d56190	299	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
samdanbury	6:37b6d0d56190	300	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
samdanbury	6:37b6d0d56190	301	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
samdanbury	6:37b6d0d56190	302	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
samdanbury	6:37b6d0d56190	303	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
samdanbury	6:37b6d0d56190	304	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
samdanbury	6:37b6d0d56190	305	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
samdanbury	6:37b6d0d56190	306	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
samdanbury	6:37b6d0d56190	307	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
samdanbury	6:37b6d0d56190	308	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
samdanbury	6:37b6d0d56190	309	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
samdanbury	6:37b6d0d56190	310	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
samdanbury	6:37b6d0d56190	311	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
samdanbury	6:37b6d0d56190	312	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
samdanbury	6:37b6d0d56190	313	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
samdanbury	6:37b6d0d56190	314	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
samdanbury	6:37b6d0d56190	315	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
samdanbury	6:37b6d0d56190	316	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
samdanbury	6:37b6d0d56190	317	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
samdanbury	6:37b6d0d56190	318	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
samdanbury	6:37b6d0d56190	319	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
samdanbury	6:37b6d0d56190	320	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
samdanbury	6:37b6d0d56190	321	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
samdanbury	6:37b6d0d56190	322	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
samdanbury	6:37b6d0d56190	323	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
samdanbury	6:37b6d0d56190	324	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
samdanbury	6:37b6d0d56190	325	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
samdanbury	6:37b6d0d56190	326	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
samdanbury	6:37b6d0d56190	327	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
samdanbury	6:37b6d0d56190	328	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
samdanbury	6:37b6d0d56190	329	};
samdanbury	6:37b6d0d56190	330
samdanbury	6:37b6d0d56190	331	/* PPP's Asynchronous-Control-Character-Map. The mask array is used
samdanbury	6:37b6d0d56190	332	* to select the specific bit for a character. */
samdanbury	6:37b6d0d56190	333	static u_char pppACCMMask[] = {
samdanbury	6:37b6d0d56190	334	0x01,
samdanbury	6:37b6d0d56190	335	0x02,
samdanbury	6:37b6d0d56190	336	0x04,
samdanbury	6:37b6d0d56190	337	0x08,
samdanbury	6:37b6d0d56190	338	0x10,
samdanbury	6:37b6d0d56190	339	0x20,
samdanbury	6:37b6d0d56190	340	0x40,
samdanbury	6:37b6d0d56190	341	0x80
samdanbury	6:37b6d0d56190	342	};
samdanbury	6:37b6d0d56190	343
samdanbury	6:37b6d0d56190	344	/** Wake up the task blocked in reading from serial line (if any) */
samdanbury	6:37b6d0d56190	345	static void
samdanbury	6:37b6d0d56190	346	pppRecvWakeup(int pd)
samdanbury	6:37b6d0d56190	347	{
samdanbury	6:37b6d0d56190	348	PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
samdanbury	6:37b6d0d56190	349	if (pppControl[pd].openFlag != 0) {
samdanbury	6:37b6d0d56190	350	sio_read_abort(pppControl[pd].fd);
samdanbury	6:37b6d0d56190	351	}
samdanbury	6:37b6d0d56190	352	}
samdanbury	6:37b6d0d56190	353	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	354
samdanbury	6:37b6d0d56190	355	void
samdanbury	6:37b6d0d56190	356	pppLinkTerminated(int pd)
samdanbury	6:37b6d0d56190	357	{
samdanbury	6:37b6d0d56190	358	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
samdanbury	6:37b6d0d56190	359
samdanbury	6:37b6d0d56190	360	#if PPPOE_SUPPORT
samdanbury	6:37b6d0d56190	361	if (pppControl[pd].ethif) {
samdanbury	6:37b6d0d56190	362	pppoe_disconnect(pppControl[pd].pppoe_sc);
samdanbury	6:37b6d0d56190	363	} else
samdanbury	6:37b6d0d56190	364	#endif /* PPPOE_SUPPORT */
samdanbury	6:37b6d0d56190	365	{
samdanbury	6:37b6d0d56190	366	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	367	PPPControl* pc;
samdanbury	6:37b6d0d56190	368	pppRecvWakeup(pd);
samdanbury	6:37b6d0d56190	369	pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	370
samdanbury	6:37b6d0d56190	371	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
samdanbury	6:37b6d0d56190	372	if (pc->linkStatusCB) {
samdanbury	6:37b6d0d56190	373	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
samdanbury	6:37b6d0d56190	374	}
samdanbury	6:37b6d0d56190	375
samdanbury	6:37b6d0d56190	376	pc->openFlag = 0;/**/
samdanbury	6:37b6d0d56190	377	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	378	}
samdanbury	6:37b6d0d56190	379	PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
samdanbury	6:37b6d0d56190	380	}
samdanbury	6:37b6d0d56190	381
samdanbury	6:37b6d0d56190	382	void
samdanbury	6:37b6d0d56190	383	pppLinkDown(int pd)
samdanbury	6:37b6d0d56190	384	{
samdanbury	6:37b6d0d56190	385	PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
samdanbury	6:37b6d0d56190	386
samdanbury	6:37b6d0d56190	387	#if PPPOE_SUPPORT
samdanbury	6:37b6d0d56190	388	if (pppControl[pd].ethif) {
samdanbury	6:37b6d0d56190	389	pppoe_disconnect(pppControl[pd].pppoe_sc);
samdanbury	6:37b6d0d56190	390	} else
samdanbury	6:37b6d0d56190	391	#endif /* PPPOE_SUPPORT */
samdanbury	6:37b6d0d56190	392	{
samdanbury	6:37b6d0d56190	393	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	394	pppRecvWakeup(pd);
samdanbury	6:37b6d0d56190	395	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	396	}
samdanbury	6:37b6d0d56190	397	}
samdanbury	6:37b6d0d56190	398
samdanbury	6:37b6d0d56190	399	/** Initiate LCP open request */
samdanbury	6:37b6d0d56190	400	static void
samdanbury	6:37b6d0d56190	401	pppStart(int pd)
samdanbury	6:37b6d0d56190	402	{
samdanbury	6:37b6d0d56190	403	PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
samdanbury	6:37b6d0d56190	404	lcp_lowerup(pd);
samdanbury	6:37b6d0d56190	405	lcp_open(pd); /* Start protocol */
samdanbury	6:37b6d0d56190	406	PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
samdanbury	6:37b6d0d56190	407	}
samdanbury	6:37b6d0d56190	408
samdanbury	6:37b6d0d56190	409	/** LCP close request */
samdanbury	6:37b6d0d56190	410	static void
samdanbury	6:37b6d0d56190	411	pppStop(int pd)
samdanbury	6:37b6d0d56190	412	{
samdanbury	6:37b6d0d56190	413	PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
samdanbury	6:37b6d0d56190	414	lcp_close(pd, "User request");
samdanbury	6:37b6d0d56190	415	}
samdanbury	6:37b6d0d56190	416
samdanbury	6:37b6d0d56190	417	/** Called when carrier/link is lost */
samdanbury	6:37b6d0d56190	418	static void
samdanbury	6:37b6d0d56190	419	pppHup(int pd)
samdanbury	6:37b6d0d56190	420	{
samdanbury	6:37b6d0d56190	421	PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
samdanbury	6:37b6d0d56190	422	lcp_lowerdown(pd);
samdanbury	6:37b6d0d56190	423	link_terminated(pd);
samdanbury	6:37b6d0d56190	424	}
samdanbury	6:37b6d0d56190	425
samdanbury	6:37b6d0d56190	426	/***********************************/
samdanbury	6:37b6d0d56190	427	/* PUBLIC FUNCTION DEFINITIONS */
samdanbury	6:37b6d0d56190	428	/***********************************/
samdanbury	6:37b6d0d56190	429	/* Initialize the PPP subsystem. */
samdanbury	6:37b6d0d56190	430
samdanbury	6:37b6d0d56190	431	struct ppp_settings ppp_settings;
samdanbury	6:37b6d0d56190	432
samdanbury	6:37b6d0d56190	433	void
samdanbury	6:37b6d0d56190	434	pppInit(void)
samdanbury	6:37b6d0d56190	435	{
samdanbury	6:37b6d0d56190	436	struct protent *protp;
samdanbury	6:37b6d0d56190	437	int i, j;
samdanbury	6:37b6d0d56190	438
samdanbury	6:37b6d0d56190	439	memset(&ppp_settings, 0, sizeof(ppp_settings));
samdanbury	6:37b6d0d56190	440	ppp_settings.usepeerdns = 1;
samdanbury	6:37b6d0d56190	441	pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
samdanbury	6:37b6d0d56190	442
samdanbury	6:37b6d0d56190	443	magicInit();
samdanbury	6:37b6d0d56190	444
samdanbury	6:37b6d0d56190	445	subnetMask = PP_HTONL(0xffffff00UL);
samdanbury	6:37b6d0d56190	446
samdanbury	6:37b6d0d56190	447	for (i = 0; i < NUM_PPP; i++) {
samdanbury	6:37b6d0d56190	448	/* Initialize each protocol to the standard option set. */
samdanbury	6:37b6d0d56190	449	for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
samdanbury	6:37b6d0d56190	450	(*protp->init)(i);
samdanbury	6:37b6d0d56190	451	}
samdanbury	6:37b6d0d56190	452	}
samdanbury	6:37b6d0d56190	453
samdanbury	6:37b6d0d56190	454	sys_mbox_new(&pppMbox, 1);
samdanbury	6:37b6d0d56190	455	sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)NULL, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO); //Create PPP thread here
samdanbury	6:37b6d0d56190	456	}
samdanbury	6:37b6d0d56190	457
samdanbury	6:37b6d0d56190	458	void
samdanbury	6:37b6d0d56190	459	pppSetAuth(enum pppAuthType authType, const char user, const char passwd)
samdanbury	6:37b6d0d56190	460	{
samdanbury	6:37b6d0d56190	461	switch(authType) {
samdanbury	6:37b6d0d56190	462	case PPPAUTHTYPE_NONE:
samdanbury	6:37b6d0d56190	463	default:
samdanbury	6:37b6d0d56190	464	#ifdef LWIP_PPP_STRICT_PAP_REJECT
samdanbury	6:37b6d0d56190	465	ppp_settings.refuse_pap = 1;
samdanbury	6:37b6d0d56190	466	#else /* LWIP_PPP_STRICT_PAP_REJECT */
samdanbury	6:37b6d0d56190	467	/* some providers request pap and accept an empty login/pw */
samdanbury	6:37b6d0d56190	468	ppp_settings.refuse_pap = 0;
samdanbury	6:37b6d0d56190	469	#endif /* LWIP_PPP_STRICT_PAP_REJECT */
samdanbury	6:37b6d0d56190	470	ppp_settings.refuse_chap = 1;
samdanbury	6:37b6d0d56190	471	break;
samdanbury	6:37b6d0d56190	472
samdanbury	6:37b6d0d56190	473	case PPPAUTHTYPE_ANY:
samdanbury	6:37b6d0d56190	474	/* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
samdanbury	6:37b6d0d56190	475	* RFC 1994 says:
samdanbury	6:37b6d0d56190	476	*
samdanbury	6:37b6d0d56190	477	* In practice, within or associated with each PPP server, there is a
samdanbury	6:37b6d0d56190	478	* database which associates "user" names with authentication
samdanbury	6:37b6d0d56190	479	* information ("secrets"). It is not anticipated that a particular
samdanbury	6:37b6d0d56190	480	* named user would be authenticated by multiple methods. This would
samdanbury	6:37b6d0d56190	481	* make the user vulnerable to attacks which negotiate the least secure
samdanbury	6:37b6d0d56190	482	* method from among a set (such as PAP rather than CHAP). If the same
samdanbury	6:37b6d0d56190	483	* secret was used, PAP would reveal the secret to be used later with
samdanbury	6:37b6d0d56190	484	* CHAP.
samdanbury	6:37b6d0d56190	485	*
samdanbury	6:37b6d0d56190	486	* Instead, for each user name there should be an indication of exactly
samdanbury	6:37b6d0d56190	487	* one method used to authenticate that user name. If a user needs to
samdanbury	6:37b6d0d56190	488	* make use of different authentication methods under different
samdanbury	6:37b6d0d56190	489	* circumstances, then distinct user names SHOULD be employed, each of
samdanbury	6:37b6d0d56190	490	* which identifies exactly one authentication method.
samdanbury	6:37b6d0d56190	491	*
samdanbury	6:37b6d0d56190	492	*/
samdanbury	6:37b6d0d56190	493	ppp_settings.refuse_pap = 0;
samdanbury	6:37b6d0d56190	494	ppp_settings.refuse_chap = 0;
samdanbury	6:37b6d0d56190	495	break;
samdanbury	6:37b6d0d56190	496
samdanbury	6:37b6d0d56190	497	case PPPAUTHTYPE_PAP:
samdanbury	6:37b6d0d56190	498	ppp_settings.refuse_pap = 0;
samdanbury	6:37b6d0d56190	499	ppp_settings.refuse_chap = 1;
samdanbury	6:37b6d0d56190	500	break;
samdanbury	6:37b6d0d56190	501
samdanbury	6:37b6d0d56190	502	case PPPAUTHTYPE_CHAP:
samdanbury	6:37b6d0d56190	503	ppp_settings.refuse_pap = 1;
samdanbury	6:37b6d0d56190	504	ppp_settings.refuse_chap = 0;
samdanbury	6:37b6d0d56190	505	break;
samdanbury	6:37b6d0d56190	506	}
samdanbury	6:37b6d0d56190	507
samdanbury	6:37b6d0d56190	508	if(user) {
samdanbury	6:37b6d0d56190	509	strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
samdanbury	6:37b6d0d56190	510	ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
samdanbury	6:37b6d0d56190	511	} else {
samdanbury	6:37b6d0d56190	512	ppp_settings.user[0] = '\0';
samdanbury	6:37b6d0d56190	513	}
samdanbury	6:37b6d0d56190	514
samdanbury	6:37b6d0d56190	515	if(passwd) {
samdanbury	6:37b6d0d56190	516	strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
samdanbury	6:37b6d0d56190	517	ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
samdanbury	6:37b6d0d56190	518	} else {
samdanbury	6:37b6d0d56190	519	ppp_settings.passwd[0] = '\0';
samdanbury	6:37b6d0d56190	520	}
samdanbury	6:37b6d0d56190	521	}
samdanbury	6:37b6d0d56190	522
samdanbury	6:37b6d0d56190	523	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	524	/** Open a new PPP connection using the given I/O device.
samdanbury	6:37b6d0d56190	525	* This initializes the PPP control block but does not
samdanbury	6:37b6d0d56190	526	* attempt to negotiate the LCP session. If this port
samdanbury	6:37b6d0d56190	527	* connects to a modem, the modem connection must be
samdanbury	6:37b6d0d56190	528	* established before calling this.
samdanbury	6:37b6d0d56190	529	* Return a new PPP connection descriptor on success or
samdanbury	6:37b6d0d56190	530	* an error code (negative) on failure.
samdanbury	6:37b6d0d56190	531	*
samdanbury	6:37b6d0d56190	532	* pppOpen() is directly defined to this function.
samdanbury	6:37b6d0d56190	533	*/
samdanbury	6:37b6d0d56190	534	int
samdanbury	6:37b6d0d56190	535	pppOverSerialOpen(sio_fd_t fd, void (linkStatusCB)(void ctx, int errCode, void arg), void linkStatusCtx)
samdanbury	6:37b6d0d56190	536	{
samdanbury	6:37b6d0d56190	537	PPPControl *pc;
samdanbury	6:37b6d0d56190	538	int pd;
samdanbury	6:37b6d0d56190	539
samdanbury	6:37b6d0d56190	540	if (linkStatusCB == NULL) {
samdanbury	6:37b6d0d56190	541	/* PPP is single-threaded: without a callback,
samdanbury	6:37b6d0d56190	542	* there is no way to know when the link is up. */
samdanbury	6:37b6d0d56190	543	return PPPERR_PARAM;
samdanbury	6:37b6d0d56190	544	}
samdanbury	6:37b6d0d56190	545
samdanbury	6:37b6d0d56190	546	/* Find a free PPP session descriptor. */
samdanbury	6:37b6d0d56190	547	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
samdanbury	6:37b6d0d56190	548
samdanbury	6:37b6d0d56190	549	if (pd >= NUM_PPP) {
samdanbury	6:37b6d0d56190	550	pd = PPPERR_OPEN;
samdanbury	6:37b6d0d56190	551	} else {
samdanbury	6:37b6d0d56190	552	pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	553	/* @todo: is this correct or do I overwrite something? */
samdanbury	6:37b6d0d56190	554	memset(pc, 0, sizeof(PPPControl));
samdanbury	6:37b6d0d56190	555	pc->rx.pd = pd;
samdanbury	6:37b6d0d56190	556	pc->rx.fd = fd;
samdanbury	6:37b6d0d56190	557
samdanbury	6:37b6d0d56190	558	pc->openFlag = 1;
samdanbury	6:37b6d0d56190	559	pc->fd = fd;
samdanbury	6:37b6d0d56190	560
samdanbury	6:37b6d0d56190	561	#if VJ_SUPPORT
samdanbury	6:37b6d0d56190	562	vj_compress_init(&pc->vjComp);
samdanbury	6:37b6d0d56190	563	#endif /* VJ_SUPPORT */
samdanbury	6:37b6d0d56190	564
samdanbury	6:37b6d0d56190	565	/*
samdanbury	6:37b6d0d56190	566	* Default the in and out accm so that escape and flag characters
samdanbury	6:37b6d0d56190	567	* are always escaped.
samdanbury	6:37b6d0d56190	568	*/
samdanbury	6:37b6d0d56190	569	pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
samdanbury	6:37b6d0d56190	570	pc->outACCM[15] = 0x60;
samdanbury	6:37b6d0d56190	571
samdanbury	6:37b6d0d56190	572	pc->linkStatusCB = linkStatusCB;
samdanbury	6:37b6d0d56190	573	pc->linkStatusCtx = linkStatusCtx;
samdanbury	6:37b6d0d56190	574
samdanbury	6:37b6d0d56190	575	/*
samdanbury	6:37b6d0d56190	576	* Start the connection and handle incoming events (packet or timeout).
samdanbury	6:37b6d0d56190	577	*/
samdanbury	6:37b6d0d56190	578	PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
samdanbury	6:37b6d0d56190	579	pppStart(pd);
samdanbury	6:37b6d0d56190	580	#if PPP_INPROC_OWNTHREAD
samdanbury	6:37b6d0d56190	581	sys_mbox_post(&pppMbox, (void*)&pc->rx);
samdanbury	6:37b6d0d56190	582	#endif
samdanbury	6:37b6d0d56190	583	}
samdanbury	6:37b6d0d56190	584
samdanbury	6:37b6d0d56190	585	return pd;
samdanbury	6:37b6d0d56190	586	}
samdanbury	6:37b6d0d56190	587	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	588
samdanbury	6:37b6d0d56190	589	#if PPPOE_SUPPORT
samdanbury	6:37b6d0d56190	590	static void pppOverEthernetLinkStatusCB(int pd, int up);
samdanbury	6:37b6d0d56190	591
samdanbury	6:37b6d0d56190	592	void
samdanbury	6:37b6d0d56190	593	pppOverEthernetClose(int pd)
samdanbury	6:37b6d0d56190	594	{
samdanbury	6:37b6d0d56190	595	PPPControl* pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	596
samdanbury	6:37b6d0d56190	597	/* TJL There's no lcp_deinit */
samdanbury	6:37b6d0d56190	598	lcp_close(pd, NULL);
samdanbury	6:37b6d0d56190	599
samdanbury	6:37b6d0d56190	600	pppoe_destroy(&pc->netif);
samdanbury	6:37b6d0d56190	601	}
samdanbury	6:37b6d0d56190	602
samdanbury	6:37b6d0d56190	603	int pppOverEthernetOpen(struct netif ethif, const char service_name, const char concentrator_name, void (linkStatusCB)(void ctx, int errCode, void arg), void *linkStatusCtx)
samdanbury	6:37b6d0d56190	604	{
samdanbury	6:37b6d0d56190	605	PPPControl *pc;
samdanbury	6:37b6d0d56190	606	int pd;
samdanbury	6:37b6d0d56190	607
samdanbury	6:37b6d0d56190	608	LWIP_UNUSED_ARG(service_name);
samdanbury	6:37b6d0d56190	609	LWIP_UNUSED_ARG(concentrator_name);
samdanbury	6:37b6d0d56190	610
samdanbury	6:37b6d0d56190	611	if (linkStatusCB == NULL) {
samdanbury	6:37b6d0d56190	612	/* PPP is single-threaded: without a callback,
samdanbury	6:37b6d0d56190	613	* there is no way to know when the link is up. */
samdanbury	6:37b6d0d56190	614	return PPPERR_PARAM;
samdanbury	6:37b6d0d56190	615	}
samdanbury	6:37b6d0d56190	616
samdanbury	6:37b6d0d56190	617	/* Find a free PPP session descriptor. Critical region? */
samdanbury	6:37b6d0d56190	618	for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
samdanbury	6:37b6d0d56190	619	if (pd >= NUM_PPP) {
samdanbury	6:37b6d0d56190	620	pd = PPPERR_OPEN;
samdanbury	6:37b6d0d56190	621	} else {
samdanbury	6:37b6d0d56190	622	pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	623	memset(pc, 0, sizeof(PPPControl));
samdanbury	6:37b6d0d56190	624	pc->openFlag = 1;
samdanbury	6:37b6d0d56190	625	pc->ethif = ethif;
samdanbury	6:37b6d0d56190	626
samdanbury	6:37b6d0d56190	627	pc->linkStatusCB = linkStatusCB;
samdanbury	6:37b6d0d56190	628	pc->linkStatusCtx = linkStatusCtx;
samdanbury	6:37b6d0d56190	629
samdanbury	6:37b6d0d56190	630	lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
samdanbury	6:37b6d0d56190	631	lcp_wantoptions[pd].neg_asyncmap = 0;
samdanbury	6:37b6d0d56190	632	lcp_wantoptions[pd].neg_pcompression = 0;
samdanbury	6:37b6d0d56190	633	lcp_wantoptions[pd].neg_accompression = 0;
samdanbury	6:37b6d0d56190	634
samdanbury	6:37b6d0d56190	635	lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
samdanbury	6:37b6d0d56190	636	lcp_allowoptions[pd].neg_asyncmap = 0;
samdanbury	6:37b6d0d56190	637	lcp_allowoptions[pd].neg_pcompression = 0;
samdanbury	6:37b6d0d56190	638	lcp_allowoptions[pd].neg_accompression = 0;
samdanbury	6:37b6d0d56190	639
samdanbury	6:37b6d0d56190	640	if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
samdanbury	6:37b6d0d56190	641	pc->openFlag = 0;
samdanbury	6:37b6d0d56190	642	return PPPERR_OPEN;
samdanbury	6:37b6d0d56190	643	}
samdanbury	6:37b6d0d56190	644
samdanbury	6:37b6d0d56190	645	pppoe_connect(pc->pppoe_sc);
samdanbury	6:37b6d0d56190	646	}
samdanbury	6:37b6d0d56190	647
samdanbury	6:37b6d0d56190	648	return pd;
samdanbury	6:37b6d0d56190	649	}
samdanbury	6:37b6d0d56190	650	#endif /* PPPOE_SUPPORT */
samdanbury	6:37b6d0d56190	651
samdanbury	6:37b6d0d56190	652
samdanbury	6:37b6d0d56190	653	/* Close a PPP connection and release the descriptor.
samdanbury	6:37b6d0d56190	654	* Any outstanding packets in the queues are dropped.
samdanbury	6:37b6d0d56190	655	* Return 0 on success, an error code on failure. */
samdanbury	6:37b6d0d56190	656	int
samdanbury	6:37b6d0d56190	657	pppClose(int pd)
samdanbury	6:37b6d0d56190	658	{
samdanbury	6:37b6d0d56190	659	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	660	int st = 0;
samdanbury	6:37b6d0d56190	661
samdanbury	6:37b6d0d56190	662	PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
samdanbury	6:37b6d0d56190	663
samdanbury	6:37b6d0d56190	664	/* Disconnect */
samdanbury	6:37b6d0d56190	665	#if PPPOE_SUPPORT
samdanbury	6:37b6d0d56190	666	if(pc->ethif) {
samdanbury	6:37b6d0d56190	667	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
samdanbury	6:37b6d0d56190	668	pc->errCode = PPPERR_USER;
samdanbury	6:37b6d0d56190	669	/* This will leave us at PHASE_DEAD. */
samdanbury	6:37b6d0d56190	670	pppStop(pd);
samdanbury	6:37b6d0d56190	671	} else
samdanbury	6:37b6d0d56190	672	#endif /* PPPOE_SUPPORT */
samdanbury	6:37b6d0d56190	673	{
samdanbury	6:37b6d0d56190	674	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	675	PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
samdanbury	6:37b6d0d56190	676	pc->errCode = PPPERR_USER;
samdanbury	6:37b6d0d56190	677	/* This will leave us at PHASE_DEAD. */
samdanbury	6:37b6d0d56190	678	pppStop(pd);
samdanbury	6:37b6d0d56190	679	pppRecvWakeup(pd);
samdanbury	6:37b6d0d56190	680	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	681	}
samdanbury	6:37b6d0d56190	682
samdanbury	6:37b6d0d56190	683	return st;
samdanbury	6:37b6d0d56190	684	}
samdanbury	6:37b6d0d56190	685
samdanbury	6:37b6d0d56190	686	/* This function is called when carrier is lost on the PPP channel. */
samdanbury	6:37b6d0d56190	687	void
samdanbury	6:37b6d0d56190	688	pppSigHUP(int pd)
samdanbury	6:37b6d0d56190	689	{
samdanbury	6:37b6d0d56190	690	PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
samdanbury	6:37b6d0d56190	691	pppHup(pd);
samdanbury	6:37b6d0d56190	692	}
samdanbury	6:37b6d0d56190	693
samdanbury	6:37b6d0d56190	694	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	695	static void
samdanbury	6:37b6d0d56190	696	nPut(PPPControl pc, struct pbuf nb)
samdanbury	6:37b6d0d56190	697	{
samdanbury	6:37b6d0d56190	698	struct pbuf *b;
samdanbury	6:37b6d0d56190	699	int c;
samdanbury	6:37b6d0d56190	700
samdanbury	6:37b6d0d56190	701	for(b = nb; b != NULL; b = b->next) {
samdanbury	6:37b6d0d56190	702	if((c = sio_write(pc->fd, b->payload, b->len)) != b->len) {
samdanbury	6:37b6d0d56190	703	PPPDEBUG(LOG_WARNING,
samdanbury	6:37b6d0d56190	704	("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));
samdanbury	6:37b6d0d56190	705	LINK_STATS_INC(link.err);
samdanbury	6:37b6d0d56190	706	pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
samdanbury	6:37b6d0d56190	707	snmp_inc_ifoutdiscards(&pc->netif);
samdanbury	6:37b6d0d56190	708	pbuf_free(nb);
samdanbury	6:37b6d0d56190	709	return;
samdanbury	6:37b6d0d56190	710	}
samdanbury	6:37b6d0d56190	711	}
samdanbury	6:37b6d0d56190	712
samdanbury	6:37b6d0d56190	713	snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
samdanbury	6:37b6d0d56190	714	snmp_inc_ifoutucastpkts(&pc->netif);
samdanbury	6:37b6d0d56190	715	pbuf_free(nb);
samdanbury	6:37b6d0d56190	716	LINK_STATS_INC(link.xmit);
samdanbury	6:37b6d0d56190	717	}
samdanbury	6:37b6d0d56190	718
samdanbury	6:37b6d0d56190	719	/*
samdanbury	6:37b6d0d56190	720	* pppAppend - append given character to end of given pbuf. If outACCM
samdanbury	6:37b6d0d56190	721	* is not NULL and the character needs to be escaped, do so.
samdanbury	6:37b6d0d56190	722	* If pbuf is full, append another.
samdanbury	6:37b6d0d56190	723	* Return the current pbuf.
samdanbury	6:37b6d0d56190	724	*/
samdanbury	6:37b6d0d56190	725	static struct pbuf *
samdanbury	6:37b6d0d56190	726	pppAppend(u_char c, struct pbuf nb, ext_accm outACCM)
samdanbury	6:37b6d0d56190	727	{
samdanbury	6:37b6d0d56190	728	struct pbuf *tb = nb;
samdanbury	6:37b6d0d56190	729
samdanbury	6:37b6d0d56190	730	/* Make sure there is room for the character and an escape code.
samdanbury	6:37b6d0d56190	731	* Sure we don't quite fill the buffer if the character doesn't
samdanbury	6:37b6d0d56190	732	* get escaped but is one character worth complicating this? */
samdanbury	6:37b6d0d56190	733	/* Note: We assume no packet header. */
samdanbury	6:37b6d0d56190	734	if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
samdanbury	6:37b6d0d56190	735	tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
samdanbury	6:37b6d0d56190	736	if (tb) {
samdanbury	6:37b6d0d56190	737	nb->next = tb;
samdanbury	6:37b6d0d56190	738	} else {
samdanbury	6:37b6d0d56190	739	LINK_STATS_INC(link.memerr);
samdanbury	6:37b6d0d56190	740	}
samdanbury	6:37b6d0d56190	741	nb = tb;
samdanbury	6:37b6d0d56190	742	}
samdanbury	6:37b6d0d56190	743
samdanbury	6:37b6d0d56190	744	if (nb) {
samdanbury	6:37b6d0d56190	745	if (outACCM && ESCAPE_P(*outACCM, c)) {
samdanbury	6:37b6d0d56190	746	((u_char)nb->payload + nb->len++) = PPP_ESCAPE;
samdanbury	6:37b6d0d56190	747	((u_char)nb->payload + nb->len++) = c ^ PPP_TRANS;
samdanbury	6:37b6d0d56190	748	} else {
samdanbury	6:37b6d0d56190	749	((u_char)nb->payload + nb->len++) = c;
samdanbury	6:37b6d0d56190	750	}
samdanbury	6:37b6d0d56190	751	}
samdanbury	6:37b6d0d56190	752
samdanbury	6:37b6d0d56190	753	return tb;
samdanbury	6:37b6d0d56190	754	}
samdanbury	6:37b6d0d56190	755	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	756
samdanbury	6:37b6d0d56190	757	#if PPPOE_SUPPORT
samdanbury	6:37b6d0d56190	758	static err_t
samdanbury	6:37b6d0d56190	759	pppifOutputOverEthernet(int pd, struct pbuf *p)
samdanbury	6:37b6d0d56190	760	{
samdanbury	6:37b6d0d56190	761	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	762	struct pbuf *pb;
samdanbury	6:37b6d0d56190	763	u_short protocol = PPP_IP;
samdanbury	6:37b6d0d56190	764	int i=0;
samdanbury	6:37b6d0d56190	765	u16_t tot_len;
samdanbury	6:37b6d0d56190	766
samdanbury	6:37b6d0d56190	767	/* @todo: try to use pbuf_header() here! */
samdanbury	6:37b6d0d56190	768	pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
samdanbury	6:37b6d0d56190	769	if(!pb) {
samdanbury	6:37b6d0d56190	770	LINK_STATS_INC(link.memerr);
samdanbury	6:37b6d0d56190	771	LINK_STATS_INC(link.proterr);
samdanbury	6:37b6d0d56190	772	snmp_inc_ifoutdiscards(&pc->netif);
samdanbury	6:37b6d0d56190	773	return ERR_MEM;
samdanbury	6:37b6d0d56190	774	}
samdanbury	6:37b6d0d56190	775
samdanbury	6:37b6d0d56190	776	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
samdanbury	6:37b6d0d56190	777
samdanbury	6:37b6d0d56190	778	pc->lastXMit = sys_jiffies();
samdanbury	6:37b6d0d56190	779
samdanbury	6:37b6d0d56190	780	if (!pc->pcomp \|\| protocol > 0xFF) {
samdanbury	6:37b6d0d56190	781	((u_char)pb->payload + i++) = (protocol >> 8) & 0xFF;
samdanbury	6:37b6d0d56190	782	}
samdanbury	6:37b6d0d56190	783	((u_char)pb->payload + i) = protocol & 0xFF;
samdanbury	6:37b6d0d56190	784
samdanbury	6:37b6d0d56190	785	pbuf_chain(pb, p);
samdanbury	6:37b6d0d56190	786	tot_len = pb->tot_len;
samdanbury	6:37b6d0d56190	787
samdanbury	6:37b6d0d56190	788	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
samdanbury	6:37b6d0d56190	789	LINK_STATS_INC(link.err);
samdanbury	6:37b6d0d56190	790	snmp_inc_ifoutdiscards(&pc->netif);
samdanbury	6:37b6d0d56190	791	return PPPERR_DEVICE;
samdanbury	6:37b6d0d56190	792	}
samdanbury	6:37b6d0d56190	793
samdanbury	6:37b6d0d56190	794	snmp_add_ifoutoctets(&pc->netif, tot_len);
samdanbury	6:37b6d0d56190	795	snmp_inc_ifoutucastpkts(&pc->netif);
samdanbury	6:37b6d0d56190	796	LINK_STATS_INC(link.xmit);
samdanbury	6:37b6d0d56190	797	return ERR_OK;
samdanbury	6:37b6d0d56190	798	}
samdanbury	6:37b6d0d56190	799	#endif /* PPPOE_SUPPORT */
samdanbury	6:37b6d0d56190	800
samdanbury	6:37b6d0d56190	801	/* Send a packet on the given connection. */
samdanbury	6:37b6d0d56190	802	static err_t
samdanbury	6:37b6d0d56190	803	pppifOutput(struct netif netif, struct pbuf pb, ip_addr_t *ipaddr)
samdanbury	6:37b6d0d56190	804	{
samdanbury	6:37b6d0d56190	805	int pd = (int)(size_t)netif->state;
samdanbury	6:37b6d0d56190	806	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	807	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	808	u_short protocol = PPP_IP;
samdanbury	6:37b6d0d56190	809	u_int fcsOut = PPP_INITFCS;
samdanbury	6:37b6d0d56190	810	struct pbuf headMB = NULL, tailMB = NULL, *p;
samdanbury	6:37b6d0d56190	811	u_char c;
samdanbury	6:37b6d0d56190	812	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	813
samdanbury	6:37b6d0d56190	814	LWIP_UNUSED_ARG(ipaddr);
samdanbury	6:37b6d0d56190	815
samdanbury	6:37b6d0d56190	816	/* Validate parameters. */
samdanbury	6:37b6d0d56190	817	/* We let any protocol value go through - it can't hurt us
samdanbury	6:37b6d0d56190	818	* and the peer will just drop it if it's not accepting it. */
samdanbury	6:37b6d0d56190	819	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag \|\| !pb) {
samdanbury	6:37b6d0d56190	820	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
samdanbury	6:37b6d0d56190	821	pd, PPP_IP, pb));
samdanbury	6:37b6d0d56190	822	LINK_STATS_INC(link.opterr);
samdanbury	6:37b6d0d56190	823	LINK_STATS_INC(link.drop);
samdanbury	6:37b6d0d56190	824	snmp_inc_ifoutdiscards(netif);
samdanbury	6:37b6d0d56190	825	return ERR_ARG;
samdanbury	6:37b6d0d56190	826	}
samdanbury	6:37b6d0d56190	827
samdanbury	6:37b6d0d56190	828	/* Check that the link is up. */
samdanbury	6:37b6d0d56190	829	if (lcp_phase[pd] == PHASE_DEAD) {
samdanbury	6:37b6d0d56190	830	PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
samdanbury	6:37b6d0d56190	831	LINK_STATS_INC(link.rterr);
samdanbury	6:37b6d0d56190	832	LINK_STATS_INC(link.drop);
samdanbury	6:37b6d0d56190	833	snmp_inc_ifoutdiscards(netif);
samdanbury	6:37b6d0d56190	834	return ERR_RTE;
samdanbury	6:37b6d0d56190	835	}
samdanbury	6:37b6d0d56190	836
samdanbury	6:37b6d0d56190	837	#if PPPOE_SUPPORT
samdanbury	6:37b6d0d56190	838	if(pc->ethif) {
samdanbury	6:37b6d0d56190	839	return pppifOutputOverEthernet(pd, pb);
samdanbury	6:37b6d0d56190	840	}
samdanbury	6:37b6d0d56190	841	#endif /* PPPOE_SUPPORT */
samdanbury	6:37b6d0d56190	842
samdanbury	6:37b6d0d56190	843	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	844	/* Grab an output buffer. */
samdanbury	6:37b6d0d56190	845	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
samdanbury	6:37b6d0d56190	846	if (headMB == NULL) {
samdanbury	6:37b6d0d56190	847	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
samdanbury	6:37b6d0d56190	848	LINK_STATS_INC(link.memerr);
samdanbury	6:37b6d0d56190	849	LINK_STATS_INC(link.drop);
samdanbury	6:37b6d0d56190	850	snmp_inc_ifoutdiscards(netif);
samdanbury	6:37b6d0d56190	851	return ERR_MEM;
samdanbury	6:37b6d0d56190	852	}
samdanbury	6:37b6d0d56190	853
samdanbury	6:37b6d0d56190	854	#if VJ_SUPPORT
samdanbury	6:37b6d0d56190	855	/*
samdanbury	6:37b6d0d56190	856	* Attempt Van Jacobson header compression if VJ is configured and
samdanbury	6:37b6d0d56190	857	* this is an IP packet.
samdanbury	6:37b6d0d56190	858	*/
samdanbury	6:37b6d0d56190	859	if (protocol == PPP_IP && pc->vjEnabled) {
samdanbury	6:37b6d0d56190	860	switch (vj_compress_tcp(&pc->vjComp, pb)) {
samdanbury	6:37b6d0d56190	861	case TYPE_IP:
samdanbury	6:37b6d0d56190	862	/* No change...
samdanbury	6:37b6d0d56190	863	protocol = PPP_IP_PROTOCOL; */
samdanbury	6:37b6d0d56190	864	break;
samdanbury	6:37b6d0d56190	865	case TYPE_COMPRESSED_TCP:
samdanbury	6:37b6d0d56190	866	protocol = PPP_VJC_COMP;
samdanbury	6:37b6d0d56190	867	break;
samdanbury	6:37b6d0d56190	868	case TYPE_UNCOMPRESSED_TCP:
samdanbury	6:37b6d0d56190	869	protocol = PPP_VJC_UNCOMP;
samdanbury	6:37b6d0d56190	870	break;
samdanbury	6:37b6d0d56190	871	default:
samdanbury	6:37b6d0d56190	872	PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
samdanbury	6:37b6d0d56190	873	LINK_STATS_INC(link.proterr);
samdanbury	6:37b6d0d56190	874	LINK_STATS_INC(link.drop);
samdanbury	6:37b6d0d56190	875	snmp_inc_ifoutdiscards(netif);
samdanbury	6:37b6d0d56190	876	pbuf_free(headMB);
samdanbury	6:37b6d0d56190	877	return ERR_VAL;
samdanbury	6:37b6d0d56190	878	}
samdanbury	6:37b6d0d56190	879	}
samdanbury	6:37b6d0d56190	880	#endif /* VJ_SUPPORT */
samdanbury	6:37b6d0d56190	881
samdanbury	6:37b6d0d56190	882	tailMB = headMB;
samdanbury	6:37b6d0d56190	883
samdanbury	6:37b6d0d56190	884	/* Build the PPP header. */
samdanbury	6:37b6d0d56190	885	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
samdanbury	6:37b6d0d56190	886	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
samdanbury	6:37b6d0d56190	887	}
samdanbury	6:37b6d0d56190	888
samdanbury	6:37b6d0d56190	889	pc->lastXMit = sys_jiffies();
samdanbury	6:37b6d0d56190	890	if (!pc->accomp) {
samdanbury	6:37b6d0d56190	891	fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
samdanbury	6:37b6d0d56190	892	tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
samdanbury	6:37b6d0d56190	893	fcsOut = PPP_FCS(fcsOut, PPP_UI);
samdanbury	6:37b6d0d56190	894	tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
samdanbury	6:37b6d0d56190	895	}
samdanbury	6:37b6d0d56190	896	if (!pc->pcomp \|\| protocol > 0xFF) {
samdanbury	6:37b6d0d56190	897	c = (protocol >> 8) & 0xFF;
samdanbury	6:37b6d0d56190	898	fcsOut = PPP_FCS(fcsOut, c);
samdanbury	6:37b6d0d56190	899	tailMB = pppAppend(c, tailMB, &pc->outACCM);
samdanbury	6:37b6d0d56190	900	}
samdanbury	6:37b6d0d56190	901	c = protocol & 0xFF;
samdanbury	6:37b6d0d56190	902	fcsOut = PPP_FCS(fcsOut, c);
samdanbury	6:37b6d0d56190	903	tailMB = pppAppend(c, tailMB, &pc->outACCM);
samdanbury	6:37b6d0d56190	904
samdanbury	6:37b6d0d56190	905	/* Load packet. */
samdanbury	6:37b6d0d56190	906	for(p = pb; p; p = p->next) {
samdanbury	6:37b6d0d56190	907	int n;
samdanbury	6:37b6d0d56190	908	u_char *sPtr;
samdanbury	6:37b6d0d56190	909
samdanbury	6:37b6d0d56190	910	sPtr = (u_char*)p->payload;
samdanbury	6:37b6d0d56190	911	n = p->len;
samdanbury	6:37b6d0d56190	912	while (n-- > 0) {
samdanbury	6:37b6d0d56190	913	c = *sPtr++;
samdanbury	6:37b6d0d56190	914
samdanbury	6:37b6d0d56190	915	/* Update FCS before checking for special characters. */
samdanbury	6:37b6d0d56190	916	fcsOut = PPP_FCS(fcsOut, c);
samdanbury	6:37b6d0d56190	917
samdanbury	6:37b6d0d56190	918	/* Copy to output buffer escaping special characters. */
samdanbury	6:37b6d0d56190	919	tailMB = pppAppend(c, tailMB, &pc->outACCM);
samdanbury	6:37b6d0d56190	920	}
samdanbury	6:37b6d0d56190	921	}
samdanbury	6:37b6d0d56190	922
samdanbury	6:37b6d0d56190	923	/* Add FCS and trailing flag. */
samdanbury	6:37b6d0d56190	924	c = ~fcsOut & 0xFF;
samdanbury	6:37b6d0d56190	925	tailMB = pppAppend(c, tailMB, &pc->outACCM);
samdanbury	6:37b6d0d56190	926	c = (~fcsOut >> 8) & 0xFF;
samdanbury	6:37b6d0d56190	927	tailMB = pppAppend(c, tailMB, &pc->outACCM);
samdanbury	6:37b6d0d56190	928	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
samdanbury	6:37b6d0d56190	929
samdanbury	6:37b6d0d56190	930	/* If we failed to complete the packet, throw it away. */
samdanbury	6:37b6d0d56190	931	if (!tailMB) {
samdanbury	6:37b6d0d56190	932	PPPDEBUG(LOG_WARNING,
samdanbury	6:37b6d0d56190	933	("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
samdanbury	6:37b6d0d56190	934	pd, protocol));
samdanbury	6:37b6d0d56190	935	pbuf_free(headMB);
samdanbury	6:37b6d0d56190	936	LINK_STATS_INC(link.memerr);
samdanbury	6:37b6d0d56190	937	LINK_STATS_INC(link.drop);
samdanbury	6:37b6d0d56190	938	snmp_inc_ifoutdiscards(netif);
samdanbury	6:37b6d0d56190	939	return ERR_MEM;
samdanbury	6:37b6d0d56190	940	}
samdanbury	6:37b6d0d56190	941
samdanbury	6:37b6d0d56190	942	/* Send it. */
samdanbury	6:37b6d0d56190	943	PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
samdanbury	6:37b6d0d56190	944
samdanbury	6:37b6d0d56190	945	nPut(pc, headMB);
samdanbury	6:37b6d0d56190	946	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	947
samdanbury	6:37b6d0d56190	948	return ERR_OK;
samdanbury	6:37b6d0d56190	949	}
samdanbury	6:37b6d0d56190	950
samdanbury	6:37b6d0d56190	951	/* Get and set parameters for the given connection.
samdanbury	6:37b6d0d56190	952	* Return 0 on success, an error code on failure. */
samdanbury	6:37b6d0d56190	953	int
samdanbury	6:37b6d0d56190	954	pppIOCtl(int pd, int cmd, void *arg)
samdanbury	6:37b6d0d56190	955	{
samdanbury	6:37b6d0d56190	956	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	957	int st = 0;
samdanbury	6:37b6d0d56190	958
samdanbury	6:37b6d0d56190	959	if (pd < 0 \|\| pd >= NUM_PPP) {
samdanbury	6:37b6d0d56190	960	st = PPPERR_PARAM;
samdanbury	6:37b6d0d56190	961	} else {
samdanbury	6:37b6d0d56190	962	switch(cmd) {
samdanbury	6:37b6d0d56190	963	case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
samdanbury	6:37b6d0d56190	964	if (arg) {
samdanbury	6:37b6d0d56190	965	(int )arg = (int)(pc->if_up);
samdanbury	6:37b6d0d56190	966	} else {
samdanbury	6:37b6d0d56190	967	st = PPPERR_PARAM;
samdanbury	6:37b6d0d56190	968	}
samdanbury	6:37b6d0d56190	969	break;
samdanbury	6:37b6d0d56190	970	case PPPCTLS_ERRCODE: /* Set the PPP error code. */
samdanbury	6:37b6d0d56190	971	if (arg) {
samdanbury	6:37b6d0d56190	972	pc->errCode = (int )arg;
samdanbury	6:37b6d0d56190	973	} else {
samdanbury	6:37b6d0d56190	974	st = PPPERR_PARAM;
samdanbury	6:37b6d0d56190	975	}
samdanbury	6:37b6d0d56190	976	break;
samdanbury	6:37b6d0d56190	977	case PPPCTLG_ERRCODE: /* Get the PPP error code. */
samdanbury	6:37b6d0d56190	978	if (arg) {
samdanbury	6:37b6d0d56190	979	(int )arg = (int)(pc->errCode);
samdanbury	6:37b6d0d56190	980	} else {
samdanbury	6:37b6d0d56190	981	st = PPPERR_PARAM;
samdanbury	6:37b6d0d56190	982	}
samdanbury	6:37b6d0d56190	983	break;
samdanbury	6:37b6d0d56190	984	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	985	case PPPCTLG_FD: /* Get the fd associated with the ppp */
samdanbury	6:37b6d0d56190	986	if (arg) {
samdanbury	6:37b6d0d56190	987	(sio_fd_t )arg = pc->fd;
samdanbury	6:37b6d0d56190	988	} else {
samdanbury	6:37b6d0d56190	989	st = PPPERR_PARAM;
samdanbury	6:37b6d0d56190	990	}
samdanbury	6:37b6d0d56190	991	break;
samdanbury	6:37b6d0d56190	992	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	993	default:
samdanbury	6:37b6d0d56190	994	st = PPPERR_PARAM;
samdanbury	6:37b6d0d56190	995	break;
samdanbury	6:37b6d0d56190	996	}
samdanbury	6:37b6d0d56190	997	}
samdanbury	6:37b6d0d56190	998
samdanbury	6:37b6d0d56190	999	return st;
samdanbury	6:37b6d0d56190	1000	}
samdanbury	6:37b6d0d56190	1001
samdanbury	6:37b6d0d56190	1002	/*
samdanbury	6:37b6d0d56190	1003	* Return the Maximum Transmission Unit for the given PPP connection.
samdanbury	6:37b6d0d56190	1004	*/
samdanbury	6:37b6d0d56190	1005	u_short
samdanbury	6:37b6d0d56190	1006	pppMTU(int pd)
samdanbury	6:37b6d0d56190	1007	{
samdanbury	6:37b6d0d56190	1008	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	1009	u_short st;
samdanbury	6:37b6d0d56190	1010
samdanbury	6:37b6d0d56190	1011	/* Validate parameters. */
samdanbury	6:37b6d0d56190	1012	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
samdanbury	6:37b6d0d56190	1013	st = 0;
samdanbury	6:37b6d0d56190	1014	} else {
samdanbury	6:37b6d0d56190	1015	st = pc->mtu;
samdanbury	6:37b6d0d56190	1016	}
samdanbury	6:37b6d0d56190	1017
samdanbury	6:37b6d0d56190	1018	return st;
samdanbury	6:37b6d0d56190	1019	}
samdanbury	6:37b6d0d56190	1020
samdanbury	6:37b6d0d56190	1021	#if PPPOE_SUPPORT
samdanbury	6:37b6d0d56190	1022	int
samdanbury	6:37b6d0d56190	1023	pppWriteOverEthernet(int pd, const u_char *s, int n)
samdanbury	6:37b6d0d56190	1024	{
samdanbury	6:37b6d0d56190	1025	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	1026	struct pbuf *pb;
samdanbury	6:37b6d0d56190	1027
samdanbury	6:37b6d0d56190	1028	/* skip address & flags */
samdanbury	6:37b6d0d56190	1029	s += 2;
samdanbury	6:37b6d0d56190	1030	n -= 2;
samdanbury	6:37b6d0d56190	1031
samdanbury	6:37b6d0d56190	1032	LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
samdanbury	6:37b6d0d56190	1033	pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
samdanbury	6:37b6d0d56190	1034	if(!pb) {
samdanbury	6:37b6d0d56190	1035	LINK_STATS_INC(link.memerr);
samdanbury	6:37b6d0d56190	1036	LINK_STATS_INC(link.proterr);
samdanbury	6:37b6d0d56190	1037	snmp_inc_ifoutdiscards(&pc->netif);
samdanbury	6:37b6d0d56190	1038	return PPPERR_ALLOC;
samdanbury	6:37b6d0d56190	1039	}
samdanbury	6:37b6d0d56190	1040
samdanbury	6:37b6d0d56190	1041	pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
samdanbury	6:37b6d0d56190	1042
samdanbury	6:37b6d0d56190	1043	pc->lastXMit = sys_jiffies();
samdanbury	6:37b6d0d56190	1044
samdanbury	6:37b6d0d56190	1045	MEMCPY(pb->payload, s, n);
samdanbury	6:37b6d0d56190	1046
samdanbury	6:37b6d0d56190	1047	if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
samdanbury	6:37b6d0d56190	1048	LINK_STATS_INC(link.err);
samdanbury	6:37b6d0d56190	1049	snmp_inc_ifoutdiscards(&pc->netif);
samdanbury	6:37b6d0d56190	1050	return PPPERR_DEVICE;
samdanbury	6:37b6d0d56190	1051	}
samdanbury	6:37b6d0d56190	1052
samdanbury	6:37b6d0d56190	1053	snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
samdanbury	6:37b6d0d56190	1054	snmp_inc_ifoutucastpkts(&pc->netif);
samdanbury	6:37b6d0d56190	1055	LINK_STATS_INC(link.xmit);
samdanbury	6:37b6d0d56190	1056	return PPPERR_NONE;
samdanbury	6:37b6d0d56190	1057	}
samdanbury	6:37b6d0d56190	1058	#endif /* PPPOE_SUPPORT */
samdanbury	6:37b6d0d56190	1059
samdanbury	6:37b6d0d56190	1060	/*
samdanbury	6:37b6d0d56190	1061	* Write n characters to a ppp link.
samdanbury	6:37b6d0d56190	1062	* RETURN: >= 0 Number of characters written
samdanbury	6:37b6d0d56190	1063	* -1 Failed to write to device
samdanbury	6:37b6d0d56190	1064	*/
samdanbury	6:37b6d0d56190	1065	int
samdanbury	6:37b6d0d56190	1066	pppWrite(int pd, const u_char *s, int n)
samdanbury	6:37b6d0d56190	1067	{
samdanbury	6:37b6d0d56190	1068	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	1069	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	1070	u_char c;
samdanbury	6:37b6d0d56190	1071	u_int fcsOut;
samdanbury	6:37b6d0d56190	1072	struct pbuf headMB, tailMB;
samdanbury	6:37b6d0d56190	1073	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	1074
samdanbury	6:37b6d0d56190	1075	#if PPPOE_SUPPORT
samdanbury	6:37b6d0d56190	1076	if(pc->ethif) {
samdanbury	6:37b6d0d56190	1077	return pppWriteOverEthernet(pd, s, n);
samdanbury	6:37b6d0d56190	1078	}
samdanbury	6:37b6d0d56190	1079	#endif /* PPPOE_SUPPORT */
samdanbury	6:37b6d0d56190	1080
samdanbury	6:37b6d0d56190	1081	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	1082	headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
samdanbury	6:37b6d0d56190	1083	if (headMB == NULL) {
samdanbury	6:37b6d0d56190	1084	LINK_STATS_INC(link.memerr);
samdanbury	6:37b6d0d56190	1085	LINK_STATS_INC(link.proterr);
samdanbury	6:37b6d0d56190	1086	snmp_inc_ifoutdiscards(&pc->netif);
samdanbury	6:37b6d0d56190	1087	return PPPERR_ALLOC;
samdanbury	6:37b6d0d56190	1088	}
samdanbury	6:37b6d0d56190	1089
samdanbury	6:37b6d0d56190	1090	tailMB = headMB;
samdanbury	6:37b6d0d56190	1091
samdanbury	6:37b6d0d56190	1092	/* If the link has been idle, we'll send a fresh flag character to
samdanbury	6:37b6d0d56190	1093	* flush any noise. */
samdanbury	6:37b6d0d56190	1094	if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
samdanbury	6:37b6d0d56190	1095	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
samdanbury	6:37b6d0d56190	1096	}
samdanbury	6:37b6d0d56190	1097	pc->lastXMit = sys_jiffies();
samdanbury	6:37b6d0d56190	1098
samdanbury	6:37b6d0d56190	1099	fcsOut = PPP_INITFCS;
samdanbury	6:37b6d0d56190	1100	/* Load output buffer. */
samdanbury	6:37b6d0d56190	1101	while (n-- > 0) {
samdanbury	6:37b6d0d56190	1102	c = *s++;
samdanbury	6:37b6d0d56190	1103
samdanbury	6:37b6d0d56190	1104	/* Update FCS before checking for special characters. */
samdanbury	6:37b6d0d56190	1105	fcsOut = PPP_FCS(fcsOut, c);
samdanbury	6:37b6d0d56190	1106
samdanbury	6:37b6d0d56190	1107	/* Copy to output buffer escaping special characters. */
samdanbury	6:37b6d0d56190	1108	tailMB = pppAppend(c, tailMB, &pc->outACCM);
samdanbury	6:37b6d0d56190	1109	}
samdanbury	6:37b6d0d56190	1110
samdanbury	6:37b6d0d56190	1111	/* Add FCS and trailing flag. */
samdanbury	6:37b6d0d56190	1112	c = ~fcsOut & 0xFF;
samdanbury	6:37b6d0d56190	1113	tailMB = pppAppend(c, tailMB, &pc->outACCM);
samdanbury	6:37b6d0d56190	1114	c = (~fcsOut >> 8) & 0xFF;
samdanbury	6:37b6d0d56190	1115	tailMB = pppAppend(c, tailMB, &pc->outACCM);
samdanbury	6:37b6d0d56190	1116	tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
samdanbury	6:37b6d0d56190	1117
samdanbury	6:37b6d0d56190	1118	/* If we failed to complete the packet, throw it away.
samdanbury	6:37b6d0d56190	1119	* Otherwise send it. */
samdanbury	6:37b6d0d56190	1120	if (!tailMB) {
samdanbury	6:37b6d0d56190	1121	PPPDEBUG(LOG_WARNING,
samdanbury	6:37b6d0d56190	1122	("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
samdanbury	6:37b6d0d56190	1123	/"pppWrite[%d]: Alloc err - dropping %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
samdanbury	6:37b6d0d56190	1124	pbuf_free(headMB);
samdanbury	6:37b6d0d56190	1125	LINK_STATS_INC(link.memerr);
samdanbury	6:37b6d0d56190	1126	LINK_STATS_INC(link.proterr);
samdanbury	6:37b6d0d56190	1127	snmp_inc_ifoutdiscards(&pc->netif);
samdanbury	6:37b6d0d56190	1128	return PPPERR_ALLOC;
samdanbury	6:37b6d0d56190	1129	}
samdanbury	6:37b6d0d56190	1130
samdanbury	6:37b6d0d56190	1131	PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
samdanbury	6:37b6d0d56190	1132	/* "pppWrite[%d]: %d:%.H", pd, headMB->len, LWIP_MIN(headMB->len 2, 40), headMB->payload)); */
samdanbury	6:37b6d0d56190	1133	nPut(pc, headMB);
samdanbury	6:37b6d0d56190	1134	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	1135
samdanbury	6:37b6d0d56190	1136	return PPPERR_NONE;
samdanbury	6:37b6d0d56190	1137	}
samdanbury	6:37b6d0d56190	1138
samdanbury	6:37b6d0d56190	1139	/*
samdanbury	6:37b6d0d56190	1140	* ppp_send_config - configure the transmit characteristics of
samdanbury	6:37b6d0d56190	1141	* the ppp interface.
samdanbury	6:37b6d0d56190	1142	*/
samdanbury	6:37b6d0d56190	1143	void
samdanbury	6:37b6d0d56190	1144	ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
samdanbury	6:37b6d0d56190	1145	{
samdanbury	6:37b6d0d56190	1146	PPPControl *pc = &pppControl[unit];
samdanbury	6:37b6d0d56190	1147	int i;
samdanbury	6:37b6d0d56190	1148
samdanbury	6:37b6d0d56190	1149	pc->mtu = mtu;
samdanbury	6:37b6d0d56190	1150	pc->pcomp = pcomp;
samdanbury	6:37b6d0d56190	1151	pc->accomp = accomp;
samdanbury	6:37b6d0d56190	1152
samdanbury	6:37b6d0d56190	1153	/* Load the ACCM bits for the 32 control codes. */
samdanbury	6:37b6d0d56190	1154	for (i = 0; i < 32/8; i++) {
samdanbury	6:37b6d0d56190	1155	pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
samdanbury	6:37b6d0d56190	1156	}
samdanbury	6:37b6d0d56190	1157	PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
samdanbury	6:37b6d0d56190	1158	unit,
samdanbury	6:37b6d0d56190	1159	pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
samdanbury	6:37b6d0d56190	1160	}
samdanbury	6:37b6d0d56190	1161
samdanbury	6:37b6d0d56190	1162
samdanbury	6:37b6d0d56190	1163	/*
samdanbury	6:37b6d0d56190	1164	* ppp_set_xaccm - set the extended transmit ACCM for the interface.
samdanbury	6:37b6d0d56190	1165	*/
samdanbury	6:37b6d0d56190	1166	void
samdanbury	6:37b6d0d56190	1167	ppp_set_xaccm(int unit, ext_accm *accm)
samdanbury	6:37b6d0d56190	1168	{
samdanbury	6:37b6d0d56190	1169	SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
samdanbury	6:37b6d0d56190	1170	PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
samdanbury	6:37b6d0d56190	1171	unit,
samdanbury	6:37b6d0d56190	1172	pppControl[unit].outACCM[0],
samdanbury	6:37b6d0d56190	1173	pppControl[unit].outACCM[1],
samdanbury	6:37b6d0d56190	1174	pppControl[unit].outACCM[2],
samdanbury	6:37b6d0d56190	1175	pppControl[unit].outACCM[3]));
samdanbury	6:37b6d0d56190	1176	}
samdanbury	6:37b6d0d56190	1177
samdanbury	6:37b6d0d56190	1178
samdanbury	6:37b6d0d56190	1179	/*
samdanbury	6:37b6d0d56190	1180	* ppp_recv_config - configure the receive-side characteristics of
samdanbury	6:37b6d0d56190	1181	* the ppp interface.
samdanbury	6:37b6d0d56190	1182	*/
samdanbury	6:37b6d0d56190	1183	void
samdanbury	6:37b6d0d56190	1184	ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
samdanbury	6:37b6d0d56190	1185	{
samdanbury	6:37b6d0d56190	1186	PPPControl *pc = &pppControl[unit];
samdanbury	6:37b6d0d56190	1187	int i;
samdanbury	6:37b6d0d56190	1188	SYS_ARCH_DECL_PROTECT(lev);
samdanbury	6:37b6d0d56190	1189
samdanbury	6:37b6d0d56190	1190	LWIP_UNUSED_ARG(accomp);
samdanbury	6:37b6d0d56190	1191	LWIP_UNUSED_ARG(pcomp);
samdanbury	6:37b6d0d56190	1192	LWIP_UNUSED_ARG(mru);
samdanbury	6:37b6d0d56190	1193
samdanbury	6:37b6d0d56190	1194	/* Load the ACCM bits for the 32 control codes. */
samdanbury	6:37b6d0d56190	1195	SYS_ARCH_PROTECT(lev);
samdanbury	6:37b6d0d56190	1196	for (i = 0; i < 32 / 8; i++) {
samdanbury	6:37b6d0d56190	1197	/* @todo: does this work? ext_accm has been modified from pppd! */
samdanbury	6:37b6d0d56190	1198	pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
samdanbury	6:37b6d0d56190	1199	}
samdanbury	6:37b6d0d56190	1200	SYS_ARCH_UNPROTECT(lev);
samdanbury	6:37b6d0d56190	1201	PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
samdanbury	6:37b6d0d56190	1202	unit,
samdanbury	6:37b6d0d56190	1203	pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
samdanbury	6:37b6d0d56190	1204	}
samdanbury	6:37b6d0d56190	1205
samdanbury	6:37b6d0d56190	1206	#if 0
samdanbury	6:37b6d0d56190	1207	/*
samdanbury	6:37b6d0d56190	1208	* ccp_test - ask kernel whether a given compression method
samdanbury	6:37b6d0d56190	1209	* is acceptable for use. Returns 1 if the method and parameters
samdanbury	6:37b6d0d56190	1210	* are OK, 0 if the method is known but the parameters are not OK
samdanbury	6:37b6d0d56190	1211	* (e.g. code size should be reduced), or -1 if the method is unknown.
samdanbury	6:37b6d0d56190	1212	*/
samdanbury	6:37b6d0d56190	1213	int
samdanbury	6:37b6d0d56190	1214	ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
samdanbury	6:37b6d0d56190	1215	{
samdanbury	6:37b6d0d56190	1216	return 0; /* XXX Currently no compression. */
samdanbury	6:37b6d0d56190	1217	}
samdanbury	6:37b6d0d56190	1218
samdanbury	6:37b6d0d56190	1219	/*
samdanbury	6:37b6d0d56190	1220	* ccp_flags_set - inform kernel about the current state of CCP.
samdanbury	6:37b6d0d56190	1221	*/
samdanbury	6:37b6d0d56190	1222	void
samdanbury	6:37b6d0d56190	1223	ccp_flags_set(int unit, int isopen, int isup)
samdanbury	6:37b6d0d56190	1224	{
samdanbury	6:37b6d0d56190	1225	/* XXX */
samdanbury	6:37b6d0d56190	1226	}
samdanbury	6:37b6d0d56190	1227
samdanbury	6:37b6d0d56190	1228	/*
samdanbury	6:37b6d0d56190	1229	* ccp_fatal_error - returns 1 if decompression was disabled as a
samdanbury	6:37b6d0d56190	1230	* result of an error detected after decompression of a packet,
samdanbury	6:37b6d0d56190	1231	* 0 otherwise. This is necessary because of patent nonsense.
samdanbury	6:37b6d0d56190	1232	*/
samdanbury	6:37b6d0d56190	1233	int
samdanbury	6:37b6d0d56190	1234	ccp_fatal_error(int unit)
samdanbury	6:37b6d0d56190	1235	{
samdanbury	6:37b6d0d56190	1236	/* XXX */
samdanbury	6:37b6d0d56190	1237	return 0;
samdanbury	6:37b6d0d56190	1238	}
samdanbury	6:37b6d0d56190	1239	#endif
samdanbury	6:37b6d0d56190	1240
samdanbury	6:37b6d0d56190	1241	/*
samdanbury	6:37b6d0d56190	1242	* get_idle_time - return how long the link has been idle.
samdanbury	6:37b6d0d56190	1243	*/
samdanbury	6:37b6d0d56190	1244	int
samdanbury	6:37b6d0d56190	1245	get_idle_time(int u, struct ppp_idle *ip)
samdanbury	6:37b6d0d56190	1246	{
samdanbury	6:37b6d0d56190	1247	/* XXX */
samdanbury	6:37b6d0d56190	1248	LWIP_UNUSED_ARG(u);
samdanbury	6:37b6d0d56190	1249	LWIP_UNUSED_ARG(ip);
samdanbury	6:37b6d0d56190	1250
samdanbury	6:37b6d0d56190	1251	return 0;
samdanbury	6:37b6d0d56190	1252	}
samdanbury	6:37b6d0d56190	1253
samdanbury	6:37b6d0d56190	1254
samdanbury	6:37b6d0d56190	1255	/*
samdanbury	6:37b6d0d56190	1256	* Return user specified netmask, modified by any mask we might determine
samdanbury	6:37b6d0d56190	1257	* for address `addr' (in network byte order).
samdanbury	6:37b6d0d56190	1258	* Here we scan through the system's list of interfaces, looking for
samdanbury	6:37b6d0d56190	1259	* any non-point-to-point interfaces which might appear to be on the same
samdanbury	6:37b6d0d56190	1260	* network as `addr'. If we find any, we OR in their netmask to the
samdanbury	6:37b6d0d56190	1261	* user-specified netmask.
samdanbury	6:37b6d0d56190	1262	*/
samdanbury	6:37b6d0d56190	1263	u32_t
samdanbury	6:37b6d0d56190	1264	GetMask(u32_t addr)
samdanbury	6:37b6d0d56190	1265	{
samdanbury	6:37b6d0d56190	1266	u32_t mask, nmask;
samdanbury	6:37b6d0d56190	1267
samdanbury	6:37b6d0d56190	1268	htonl(addr);
samdanbury	6:37b6d0d56190	1269	if (IP_CLASSA(addr)) { /* determine network mask for address class */
samdanbury	6:37b6d0d56190	1270	nmask = IP_CLASSA_NET;
samdanbury	6:37b6d0d56190	1271	} else if (IP_CLASSB(addr)) {
samdanbury	6:37b6d0d56190	1272	nmask = IP_CLASSB_NET;
samdanbury	6:37b6d0d56190	1273	} else {
samdanbury	6:37b6d0d56190	1274	nmask = IP_CLASSC_NET;
samdanbury	6:37b6d0d56190	1275	}
samdanbury	6:37b6d0d56190	1276
samdanbury	6:37b6d0d56190	1277	/* class D nets are disallowed by bad_ip_adrs */
samdanbury	6:37b6d0d56190	1278	mask = subnetMask \| htonl(nmask);
samdanbury	6:37b6d0d56190	1279
samdanbury	6:37b6d0d56190	1280	/* XXX
samdanbury	6:37b6d0d56190	1281	* Scan through the system's network interfaces.
samdanbury	6:37b6d0d56190	1282	* Get each netmask and OR them into our mask.
samdanbury	6:37b6d0d56190	1283	*/
samdanbury	6:37b6d0d56190	1284
samdanbury	6:37b6d0d56190	1285	return mask;
samdanbury	6:37b6d0d56190	1286	}
samdanbury	6:37b6d0d56190	1287
samdanbury	6:37b6d0d56190	1288	/*
samdanbury	6:37b6d0d56190	1289	* sifvjcomp - config tcp header compression
samdanbury	6:37b6d0d56190	1290	*/
samdanbury	6:37b6d0d56190	1291	int
samdanbury	6:37b6d0d56190	1292	sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
samdanbury	6:37b6d0d56190	1293	{
samdanbury	6:37b6d0d56190	1294	#if PPPOS_SUPPORT && VJ_SUPPORT
samdanbury	6:37b6d0d56190	1295	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	1296
samdanbury	6:37b6d0d56190	1297	pc->vjEnabled = vjcomp;
samdanbury	6:37b6d0d56190	1298	pc->vjComp.compressSlot = cidcomp;
samdanbury	6:37b6d0d56190	1299	pc->vjComp.maxSlotIndex = maxcid;
samdanbury	6:37b6d0d56190	1300	PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
samdanbury	6:37b6d0d56190	1301	vjcomp, cidcomp, maxcid));
samdanbury	6:37b6d0d56190	1302	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
samdanbury	6:37b6d0d56190	1303	LWIP_UNUSED_ARG(pd);
samdanbury	6:37b6d0d56190	1304	LWIP_UNUSED_ARG(vjcomp);
samdanbury	6:37b6d0d56190	1305	LWIP_UNUSED_ARG(cidcomp);
samdanbury	6:37b6d0d56190	1306	LWIP_UNUSED_ARG(maxcid);
samdanbury	6:37b6d0d56190	1307	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
samdanbury	6:37b6d0d56190	1308
samdanbury	6:37b6d0d56190	1309	return 0;
samdanbury	6:37b6d0d56190	1310	}
samdanbury	6:37b6d0d56190	1311
samdanbury	6:37b6d0d56190	1312	/*
samdanbury	6:37b6d0d56190	1313	* pppifNetifInit - netif init callback
samdanbury	6:37b6d0d56190	1314	*/
samdanbury	6:37b6d0d56190	1315	static err_t
samdanbury	6:37b6d0d56190	1316	pppifNetifInit(struct netif *netif)
samdanbury	6:37b6d0d56190	1317	{
samdanbury	6:37b6d0d56190	1318	netif->name[0] = 'p';
samdanbury	6:37b6d0d56190	1319	netif->name[1] = 'p';
samdanbury	6:37b6d0d56190	1320	netif->output = pppifOutput;
samdanbury	6:37b6d0d56190	1321	netif->mtu = pppMTU((int)(size_t)netif->state);
samdanbury	6:37b6d0d56190	1322	netif->flags = NETIF_FLAG_POINTTOPOINT \| NETIF_FLAG_LINK_UP;
samdanbury	6:37b6d0d56190	1323	#if LWIP_NETIF_HOSTNAME
samdanbury	6:37b6d0d56190	1324	/* @todo: Initialize interface hostname */
samdanbury	6:37b6d0d56190	1325	/* netif_set_hostname(netif, "lwip"); */
samdanbury	6:37b6d0d56190	1326	#endif /* LWIP_NETIF_HOSTNAME */
samdanbury	6:37b6d0d56190	1327	return ERR_OK;
samdanbury	6:37b6d0d56190	1328	}
samdanbury	6:37b6d0d56190	1329
samdanbury	6:37b6d0d56190	1330
samdanbury	6:37b6d0d56190	1331	/*
samdanbury	6:37b6d0d56190	1332	* sifup - Config the interface up and enable IP packets to pass.
samdanbury	6:37b6d0d56190	1333	*/
samdanbury	6:37b6d0d56190	1334	int
samdanbury	6:37b6d0d56190	1335	sifup(int pd)
samdanbury	6:37b6d0d56190	1336	{
samdanbury	6:37b6d0d56190	1337	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	1338	int st = 1;
samdanbury	6:37b6d0d56190	1339
samdanbury	6:37b6d0d56190	1340	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
samdanbury	6:37b6d0d56190	1341	st = 0;
samdanbury	6:37b6d0d56190	1342	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
samdanbury	6:37b6d0d56190	1343	} else {
samdanbury	6:37b6d0d56190	1344	netif_remove(&pc->netif);
samdanbury	6:37b6d0d56190	1345	if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
samdanbury	6:37b6d0d56190	1346	&pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
samdanbury	6:37b6d0d56190	1347	netif_set_up(&pc->netif);
samdanbury	6:37b6d0d56190	1348	pc->if_up = 1;
samdanbury	6:37b6d0d56190	1349	pc->errCode = PPPERR_NONE;
samdanbury	6:37b6d0d56190	1350
samdanbury	6:37b6d0d56190	1351	PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
samdanbury	6:37b6d0d56190	1352	if (pc->linkStatusCB) {
samdanbury	6:37b6d0d56190	1353	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
samdanbury	6:37b6d0d56190	1354	}
samdanbury	6:37b6d0d56190	1355	} else {
samdanbury	6:37b6d0d56190	1356	st = 0;
samdanbury	6:37b6d0d56190	1357	PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
samdanbury	6:37b6d0d56190	1358	}
samdanbury	6:37b6d0d56190	1359	}
samdanbury	6:37b6d0d56190	1360
samdanbury	6:37b6d0d56190	1361	return st;
samdanbury	6:37b6d0d56190	1362	}
samdanbury	6:37b6d0d56190	1363
samdanbury	6:37b6d0d56190	1364	/*
samdanbury	6:37b6d0d56190	1365	* sifnpmode - Set the mode for handling packets for a given NP.
samdanbury	6:37b6d0d56190	1366	*/
samdanbury	6:37b6d0d56190	1367	int
samdanbury	6:37b6d0d56190	1368	sifnpmode(int u, int proto, enum NPmode mode)
samdanbury	6:37b6d0d56190	1369	{
samdanbury	6:37b6d0d56190	1370	LWIP_UNUSED_ARG(u);
samdanbury	6:37b6d0d56190	1371	LWIP_UNUSED_ARG(proto);
samdanbury	6:37b6d0d56190	1372	LWIP_UNUSED_ARG(mode);
samdanbury	6:37b6d0d56190	1373	return 0;
samdanbury	6:37b6d0d56190	1374	}
samdanbury	6:37b6d0d56190	1375
samdanbury	6:37b6d0d56190	1376	/*
samdanbury	6:37b6d0d56190	1377	* sifdown - Config the interface down and disable IP.
samdanbury	6:37b6d0d56190	1378	*/
samdanbury	6:37b6d0d56190	1379	int
samdanbury	6:37b6d0d56190	1380	sifdown(int pd)
samdanbury	6:37b6d0d56190	1381	{
samdanbury	6:37b6d0d56190	1382	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	1383	int st = 1;
samdanbury	6:37b6d0d56190	1384
samdanbury	6:37b6d0d56190	1385	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
samdanbury	6:37b6d0d56190	1386	st = 0;
samdanbury	6:37b6d0d56190	1387	PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
samdanbury	6:37b6d0d56190	1388	} else {
samdanbury	6:37b6d0d56190	1389	pc->if_up = 0;
samdanbury	6:37b6d0d56190	1390	/* make sure the netif status callback is called */
samdanbury	6:37b6d0d56190	1391	netif_set_down(&pc->netif);
samdanbury	6:37b6d0d56190	1392	netif_remove(&pc->netif);
samdanbury	6:37b6d0d56190	1393	PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
samdanbury	6:37b6d0d56190	1394	if (pc->linkStatusCB) {
samdanbury	6:37b6d0d56190	1395	pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
samdanbury	6:37b6d0d56190	1396	}
samdanbury	6:37b6d0d56190	1397	}
samdanbury	6:37b6d0d56190	1398	return st;
samdanbury	6:37b6d0d56190	1399	}
samdanbury	6:37b6d0d56190	1400
samdanbury	6:37b6d0d56190	1401	/**
samdanbury	6:37b6d0d56190	1402	* sifaddr - Config the interface IP addresses and netmask.
samdanbury	6:37b6d0d56190	1403	* @param pd Interface unit ???
samdanbury	6:37b6d0d56190	1404	* @param o Our IP address ???
samdanbury	6:37b6d0d56190	1405	* @param h His IP address ???
samdanbury	6:37b6d0d56190	1406	* @param m IP subnet mask ???
samdanbury	6:37b6d0d56190	1407	* @param ns1 Primary DNS
samdanbury	6:37b6d0d56190	1408	* @param ns2 Secondary DNS
samdanbury	6:37b6d0d56190	1409	*/
samdanbury	6:37b6d0d56190	1410	int
samdanbury	6:37b6d0d56190	1411	sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
samdanbury	6:37b6d0d56190	1412	{
samdanbury	6:37b6d0d56190	1413	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	1414	int st = 1;
samdanbury	6:37b6d0d56190	1415
samdanbury	6:37b6d0d56190	1416	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
samdanbury	6:37b6d0d56190	1417	st = 0;
samdanbury	6:37b6d0d56190	1418	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
samdanbury	6:37b6d0d56190	1419	} else {
samdanbury	6:37b6d0d56190	1420	SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
samdanbury	6:37b6d0d56190	1421	SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
samdanbury	6:37b6d0d56190	1422	SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
samdanbury	6:37b6d0d56190	1423	SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
samdanbury	6:37b6d0d56190	1424	SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
samdanbury	6:37b6d0d56190	1425	}
samdanbury	6:37b6d0d56190	1426	return st;
samdanbury	6:37b6d0d56190	1427	}
samdanbury	6:37b6d0d56190	1428
samdanbury	6:37b6d0d56190	1429	/**
samdanbury	6:37b6d0d56190	1430	* cifaddr - Clear the interface IP addresses, and delete routes
samdanbury	6:37b6d0d56190	1431	* through the interface if possible.
samdanbury	6:37b6d0d56190	1432	* @param pd Interface unit ???
samdanbury	6:37b6d0d56190	1433	* @param o Our IP address ???
samdanbury	6:37b6d0d56190	1434	* @param h IP broadcast address ???
samdanbury	6:37b6d0d56190	1435	*/
samdanbury	6:37b6d0d56190	1436	int
samdanbury	6:37b6d0d56190	1437	cifaddr( int pd, u32_t o, u32_t h)
samdanbury	6:37b6d0d56190	1438	{
samdanbury	6:37b6d0d56190	1439	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	1440	int st = 1;
samdanbury	6:37b6d0d56190	1441
samdanbury	6:37b6d0d56190	1442	LWIP_UNUSED_ARG(o);
samdanbury	6:37b6d0d56190	1443	LWIP_UNUSED_ARG(h);
samdanbury	6:37b6d0d56190	1444	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
samdanbury	6:37b6d0d56190	1445	st = 0;
samdanbury	6:37b6d0d56190	1446	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
samdanbury	6:37b6d0d56190	1447	} else {
samdanbury	6:37b6d0d56190	1448	IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
samdanbury	6:37b6d0d56190	1449	IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
samdanbury	6:37b6d0d56190	1450	IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
samdanbury	6:37b6d0d56190	1451	IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
samdanbury	6:37b6d0d56190	1452	IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
samdanbury	6:37b6d0d56190	1453	}
samdanbury	6:37b6d0d56190	1454	return st;
samdanbury	6:37b6d0d56190	1455	}
samdanbury	6:37b6d0d56190	1456
samdanbury	6:37b6d0d56190	1457	/*
samdanbury	6:37b6d0d56190	1458	* sifdefaultroute - assign a default route through the address given.
samdanbury	6:37b6d0d56190	1459	*/
samdanbury	6:37b6d0d56190	1460	int
samdanbury	6:37b6d0d56190	1461	sifdefaultroute(int pd, u32_t l, u32_t g)
samdanbury	6:37b6d0d56190	1462	{
samdanbury	6:37b6d0d56190	1463	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	1464	int st = 1;
samdanbury	6:37b6d0d56190	1465
samdanbury	6:37b6d0d56190	1466	LWIP_UNUSED_ARG(l);
samdanbury	6:37b6d0d56190	1467	LWIP_UNUSED_ARG(g);
samdanbury	6:37b6d0d56190	1468
samdanbury	6:37b6d0d56190	1469	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
samdanbury	6:37b6d0d56190	1470	st = 0;
samdanbury	6:37b6d0d56190	1471	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
samdanbury	6:37b6d0d56190	1472	} else {
samdanbury	6:37b6d0d56190	1473	netif_set_default(&pc->netif);
samdanbury	6:37b6d0d56190	1474	}
samdanbury	6:37b6d0d56190	1475
samdanbury	6:37b6d0d56190	1476	/* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
samdanbury	6:37b6d0d56190	1477
samdanbury	6:37b6d0d56190	1478	return st;
samdanbury	6:37b6d0d56190	1479	}
samdanbury	6:37b6d0d56190	1480
samdanbury	6:37b6d0d56190	1481	/*
samdanbury	6:37b6d0d56190	1482	* cifdefaultroute - delete a default route through the address given.
samdanbury	6:37b6d0d56190	1483	*/
samdanbury	6:37b6d0d56190	1484	int
samdanbury	6:37b6d0d56190	1485	cifdefaultroute(int pd, u32_t l, u32_t g)
samdanbury	6:37b6d0d56190	1486	{
samdanbury	6:37b6d0d56190	1487	PPPControl *pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	1488	int st = 1;
samdanbury	6:37b6d0d56190	1489
samdanbury	6:37b6d0d56190	1490	LWIP_UNUSED_ARG(l);
samdanbury	6:37b6d0d56190	1491	LWIP_UNUSED_ARG(g);
samdanbury	6:37b6d0d56190	1492
samdanbury	6:37b6d0d56190	1493	if (pd < 0 \|\| pd >= NUM_PPP \|\| !pc->openFlag) {
samdanbury	6:37b6d0d56190	1494	st = 0;
samdanbury	6:37b6d0d56190	1495	PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
samdanbury	6:37b6d0d56190	1496	} else {
samdanbury	6:37b6d0d56190	1497	netif_set_default(NULL);
samdanbury	6:37b6d0d56190	1498	}
samdanbury	6:37b6d0d56190	1499
samdanbury	6:37b6d0d56190	1500	return st;
samdanbury	6:37b6d0d56190	1501	}
samdanbury	6:37b6d0d56190	1502
samdanbury	6:37b6d0d56190	1503	/**********************************/
samdanbury	6:37b6d0d56190	1504	/* LOCAL FUNCTION DEFINITIONS */
samdanbury	6:37b6d0d56190	1505	/**********************************/
samdanbury	6:37b6d0d56190	1506
samdanbury	6:37b6d0d56190	1507	#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
samdanbury	6:37b6d0d56190	1508	/* The main PPP process function. This implements the state machine according
samdanbury	6:37b6d0d56190	1509	* to section 4 of RFC 1661: The Point-To-Point Protocol. */
samdanbury	6:37b6d0d56190	1510	static void
samdanbury	6:37b6d0d56190	1511	pppInputThread(void *arg)
samdanbury	6:37b6d0d56190	1512	{
samdanbury	6:37b6d0d56190	1513	int count;
samdanbury	6:37b6d0d56190	1514	PPPControlRx *pcrx = arg;
samdanbury	6:37b6d0d56190	1515
samdanbury	6:37b6d0d56190	1516	do
samdanbury	6:37b6d0d56190	1517	{
samdanbury	6:37b6d0d56190	1518	sys_arch_mbox_fetch(&pppMbox, (void**)&pcrx, 0); //Wait indefinitely
samdanbury	6:37b6d0d56190	1519
samdanbury	6:37b6d0d56190	1520	while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
samdanbury	6:37b6d0d56190	1521	count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
samdanbury	6:37b6d0d56190	1522	if(count > 0) {
samdanbury	6:37b6d0d56190	1523	pppInProc(pcrx, pcrx->rxbuf, count);
samdanbury	6:37b6d0d56190	1524	} else {
samdanbury	6:37b6d0d56190	1525	/* nothing received, give other tasks a chance to run */
samdanbury	6:37b6d0d56190	1526	sys_msleep(1);
samdanbury	6:37b6d0d56190	1527	}
samdanbury	6:37b6d0d56190	1528	}
samdanbury	6:37b6d0d56190	1529	} while(1); //Never terminates
samdanbury	6:37b6d0d56190	1530	}
samdanbury	6:37b6d0d56190	1531	#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
samdanbury	6:37b6d0d56190	1532
samdanbury	6:37b6d0d56190	1533	#if PPPOE_SUPPORT
samdanbury	6:37b6d0d56190	1534
samdanbury	6:37b6d0d56190	1535	void
samdanbury	6:37b6d0d56190	1536	pppOverEthernetInitFailed(int pd)
samdanbury	6:37b6d0d56190	1537	{
samdanbury	6:37b6d0d56190	1538	PPPControl* pc;
samdanbury	6:37b6d0d56190	1539
samdanbury	6:37b6d0d56190	1540	pppHup(pd);
samdanbury	6:37b6d0d56190	1541	pppStop(pd);
samdanbury	6:37b6d0d56190	1542
samdanbury	6:37b6d0d56190	1543	pc = &pppControl[pd];
samdanbury	6:37b6d0d56190	1544	pppoe_destroy(&pc->netif);
samdanbury	6:37b6d0d56190	1545	pc->openFlag = 0;
samdanbury	6:37b6d0d56190	1546
samdanbury	6:37b6d0d56190	1547	if(pc->linkStatusCB) {
samdanbury	6:37b6d0d56190	1548	pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
samdanbury	6:37b6d0d56190	1549	}
samdanbury	6:37b6d0d56190	1550	}
samdanbury	6:37b6d0d56190	1551
samdanbury	6:37b6d0d56190	1552	static void
samdanbury	6:37b6d0d56190	1553	pppOverEthernetLinkStatusCB(int pd, int up)
samdanbury	6:37b6d0d56190	1554	{
samdanbury	6:37b6d0d56190	1555	if(up) {
samdanbury	6:37b6d0d56190	1556	PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
samdanbury	6:37b6d0d56190	1557	pppStart(pd);
samdanbury	6:37b6d0d56190	1558	} else {
samdanbury	6:37b6d0d56190	1559	pppOverEthernetInitFailed(pd);
samdanbury	6:37b6d0d56190	1560	}
samdanbury	6:37b6d0d56190	1561	}
samdanbury	6:37b6d0d56190	1562	#endif /* PPPOE_SUPPORT */
samdanbury	6:37b6d0d56190	1563
samdanbury	6:37b6d0d56190	1564	struct pbuf *
samdanbury	6:37b6d0d56190	1565	pppSingleBuf(struct pbuf *p)
samdanbury	6:37b6d0d56190	1566	{
samdanbury	6:37b6d0d56190	1567	struct pbuf q, b;
samdanbury	6:37b6d0d56190	1568	u_char *pl;
samdanbury	6:37b6d0d56190	1569
samdanbury	6:37b6d0d56190	1570	if(p->tot_len == p->len) {
samdanbury	6:37b6d0d56190	1571	return p;
samdanbury	6:37b6d0d56190	1572	}
samdanbury	6:37b6d0d56190	1573
samdanbury	6:37b6d0d56190	1574	q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
samdanbury	6:37b6d0d56190	1575	if(!q) {
samdanbury	6:37b6d0d56190	1576	PPPDEBUG(LOG_ERR,
samdanbury	6:37b6d0d56190	1577	("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
samdanbury	6:37b6d0d56190	1578	return p; /* live dangerously */
samdanbury	6:37b6d0d56190	1579	}
samdanbury	6:37b6d0d56190	1580
samdanbury	6:37b6d0d56190	1581	for(b = p, pl = q->payload; b != NULL; b = b->next) {
samdanbury	6:37b6d0d56190	1582	MEMCPY(pl, b->payload, b->len);
samdanbury	6:37b6d0d56190	1583	pl += b->len;
samdanbury	6:37b6d0d56190	1584	}
samdanbury	6:37b6d0d56190	1585
samdanbury	6:37b6d0d56190	1586	pbuf_free(p);
samdanbury	6:37b6d0d56190	1587
samdanbury	6:37b6d0d56190	1588	return q;
samdanbury	6:37b6d0d56190	1589	}
samdanbury	6:37b6d0d56190	1590
samdanbury	6:37b6d0d56190	1591	struct pppInputHeader {
samdanbury	6:37b6d0d56190	1592	int unit;
samdanbury	6:37b6d0d56190	1593	u16_t proto;
samdanbury	6:37b6d0d56190	1594	};
samdanbury	6:37b6d0d56190	1595
samdanbury	6:37b6d0d56190	1596	/*
samdanbury	6:37b6d0d56190	1597	* Pass the processed input packet to the appropriate handler.
samdanbury	6:37b6d0d56190	1598	* This function and all handlers run in the context of the tcpip_thread
samdanbury	6:37b6d0d56190	1599	*/
samdanbury	6:37b6d0d56190	1600	static void
samdanbury	6:37b6d0d56190	1601	pppInput(void *arg)
samdanbury	6:37b6d0d56190	1602	{
samdanbury	6:37b6d0d56190	1603	struct pbuf nb = (struct pbuf )arg;
samdanbury	6:37b6d0d56190	1604	u16_t protocol;
samdanbury	6:37b6d0d56190	1605	int pd;
samdanbury	6:37b6d0d56190	1606
samdanbury	6:37b6d0d56190	1607	pd = ((struct pppInputHeader *)nb->payload)->unit;
samdanbury	6:37b6d0d56190	1608	protocol = ((struct pppInputHeader *)nb->payload)->proto;
samdanbury	6:37b6d0d56190	1609
samdanbury	6:37b6d0d56190	1610	if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
samdanbury	6:37b6d0d56190	1611	LWIP_ASSERT("pbuf_header failed\n", 0);
samdanbury	6:37b6d0d56190	1612	goto drop;
samdanbury	6:37b6d0d56190	1613	}
samdanbury	6:37b6d0d56190	1614
samdanbury	6:37b6d0d56190	1615	LINK_STATS_INC(link.recv);
samdanbury	6:37b6d0d56190	1616	snmp_inc_ifinucastpkts(&pppControl[pd].netif);
samdanbury	6:37b6d0d56190	1617	snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
samdanbury	6:37b6d0d56190	1618
samdanbury	6:37b6d0d56190	1619	/*
samdanbury	6:37b6d0d56190	1620	* Toss all non-LCP packets unless LCP is OPEN.
samdanbury	6:37b6d0d56190	1621	* Until we get past the authentication phase, toss all packets
samdanbury	6:37b6d0d56190	1622	* except LCP, LQR and authentication packets.
samdanbury	6:37b6d0d56190	1623	*/
samdanbury	6:37b6d0d56190	1624	if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
samdanbury	6:37b6d0d56190	1625	if(!((protocol == PPP_LQR) \|\| (protocol == PPP_PAP) \|\| (protocol == PPP_CHAP)) \|\|
samdanbury	6:37b6d0d56190	1626	(lcp_phase[pd] != PHASE_AUTHENTICATE)) {
samdanbury	6:37b6d0d56190	1627	PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
samdanbury	6:37b6d0d56190	1628	goto drop;
samdanbury	6:37b6d0d56190	1629	}
samdanbury	6:37b6d0d56190	1630	}
samdanbury	6:37b6d0d56190	1631
samdanbury	6:37b6d0d56190	1632	switch(protocol) {
samdanbury	6:37b6d0d56190	1633	case PPP_VJC_COMP: /* VJ compressed TCP */
samdanbury	6:37b6d0d56190	1634	#if PPPOS_SUPPORT && VJ_SUPPORT
samdanbury	6:37b6d0d56190	1635	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
samdanbury	6:37b6d0d56190	1636	/*
samdanbury	6:37b6d0d56190	1637	* Clip off the VJ header and prepend the rebuilt TCP/IP header and
samdanbury	6:37b6d0d56190	1638	* pass the result to IP.
samdanbury	6:37b6d0d56190	1639	*/
samdanbury	6:37b6d0d56190	1640	if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
samdanbury	6:37b6d0d56190	1641	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
samdanbury	6:37b6d0d56190	1642	return;
samdanbury	6:37b6d0d56190	1643	}
samdanbury	6:37b6d0d56190	1644	/* Something's wrong so drop it. */
samdanbury	6:37b6d0d56190	1645	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
samdanbury	6:37b6d0d56190	1646	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
samdanbury	6:37b6d0d56190	1647	/* No handler for this protocol so drop the packet. */
samdanbury	6:37b6d0d56190	1648	PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
samdanbury	6:37b6d0d56190	1649	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
samdanbury	6:37b6d0d56190	1650	break;
samdanbury	6:37b6d0d56190	1651
samdanbury	6:37b6d0d56190	1652	case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
samdanbury	6:37b6d0d56190	1653	#if PPPOS_SUPPORT && VJ_SUPPORT
samdanbury	6:37b6d0d56190	1654	PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
samdanbury	6:37b6d0d56190	1655	/*
samdanbury	6:37b6d0d56190	1656	* Process the TCP/IP header for VJ header compression and then pass
samdanbury	6:37b6d0d56190	1657	* the packet to IP.
samdanbury	6:37b6d0d56190	1658	*/
samdanbury	6:37b6d0d56190	1659	if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
samdanbury	6:37b6d0d56190	1660	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
samdanbury	6:37b6d0d56190	1661	return;
samdanbury	6:37b6d0d56190	1662	}
samdanbury	6:37b6d0d56190	1663	/* Something's wrong so drop it. */
samdanbury	6:37b6d0d56190	1664	PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
samdanbury	6:37b6d0d56190	1665	#else /* PPPOS_SUPPORT && VJ_SUPPORT */
samdanbury	6:37b6d0d56190	1666	/* No handler for this protocol so drop the packet. */
samdanbury	6:37b6d0d56190	1667	PPPDEBUG(LOG_INFO,
samdanbury	6:37b6d0d56190	1668	("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
samdanbury	6:37b6d0d56190	1669	pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
samdanbury	6:37b6d0d56190	1670	#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
samdanbury	6:37b6d0d56190	1671	break;
samdanbury	6:37b6d0d56190	1672
samdanbury	6:37b6d0d56190	1673	case PPP_IP: /* Internet Protocol */
samdanbury	6:37b6d0d56190	1674	PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
samdanbury	6:37b6d0d56190	1675	if (pppControl[pd].netif.input) {
samdanbury	6:37b6d0d56190	1676	pppControl[pd].netif.input(nb, &pppControl[pd].netif);
samdanbury	6:37b6d0d56190	1677	return;
samdanbury	6:37b6d0d56190	1678	}
samdanbury	6:37b6d0d56190	1679	break;
samdanbury	6:37b6d0d56190	1680
samdanbury	6:37b6d0d56190	1681	default: {
samdanbury	6:37b6d0d56190	1682	struct protent *protp;
samdanbury	6:37b6d0d56190	1683	int i;
samdanbury	6:37b6d0d56190	1684
samdanbury	6:37b6d0d56190	1685	/*
samdanbury	6:37b6d0d56190	1686	* Upcall the proper protocol input routine.
samdanbury	6:37b6d0d56190	1687	*/
samdanbury	6:37b6d0d56190	1688	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
samdanbury	6:37b6d0d56190	1689	if (protp->protocol == protocol && protp->enabled_flag) {
samdanbury	6:37b6d0d56190	1690	PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
samdanbury	6:37b6d0d56190	1691	nb = pppSingleBuf(nb);
samdanbury	6:37b6d0d56190	1692	(*protp->input)(pd, nb->payload, nb->len);
samdanbury	6:37b6d0d56190	1693	PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
samdanbury	6:37b6d0d56190	1694	goto out;
samdanbury	6:37b6d0d56190	1695	}
samdanbury	6:37b6d0d56190	1696	}
samdanbury	6:37b6d0d56190	1697
samdanbury	6:37b6d0d56190	1698	/* No handler for this protocol so reject the packet. */
samdanbury	6:37b6d0d56190	1699	PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
samdanbury	6:37b6d0d56190	1700	if (pbuf_header(nb, sizeof(protocol))) {
samdanbury	6:37b6d0d56190	1701	LWIP_ASSERT("pbuf_header failed\n", 0);
samdanbury	6:37b6d0d56190	1702	goto drop;
samdanbury	6:37b6d0d56190	1703	}
samdanbury	6:37b6d0d56190	1704	#if BYTE_ORDER == LITTLE_ENDIAN
samdanbury	6:37b6d0d56190	1705	protocol = htons(protocol);
samdanbury	6:37b6d0d56190	1706	#endif /* BYTE_ORDER == LITTLE_ENDIAN */
samdanbury	6:37b6d0d56190	1707	SMEMCPY(nb->payload, &protocol, sizeof(protocol));
samdanbury	6:37b6d0d56190	1708	lcp_sprotrej(pd, nb->payload, nb->len);
samdanbury	6:37b6d0d56190	1709	}
samdanbury	6:37b6d0d56190	1710	break;
samdanbury	6:37b6d0d56190	1711	}
samdanbury	6:37b6d0d56190	1712
samdanbury	6:37b6d0d56190	1713	drop:
samdanbury	6:37b6d0d56190	1714	LINK_STATS_INC(link.drop);
samdanbury	6:37b6d0d56190	1715	snmp_inc_ifindiscards(&pppControl[pd].netif);
samdanbury	6:37b6d0d56190	1716
samdanbury	6:37b6d0d56190	1717	out:
samdanbury	6:37b6d0d56190	1718	pbuf_free(nb);
samdanbury	6:37b6d0d56190	1719	return;
samdanbury	6:37b6d0d56190	1720	}
samdanbury	6:37b6d0d56190	1721
samdanbury	6:37b6d0d56190	1722	#if PPPOS_SUPPORT
samdanbury	6:37b6d0d56190	1723	/*
samdanbury	6:37b6d0d56190	1724	* Drop the input packet.
samdanbury	6:37b6d0d56190	1725	*/
samdanbury	6:37b6d0d56190	1726	static void
samdanbury	6:37b6d0d56190	1727	pppDrop(PPPControlRx *pcrx)
samdanbury	6:37b6d0d56190	1728	{
samdanbury	6:37b6d0d56190	1729	if (pcrx->inHead != NULL) {
samdanbury	6:37b6d0d56190	1730	#if 0
samdanbury	6:37b6d0d56190	1731	PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.H\n", pcrx->inHead->len, min(60, pcrx->inHead->len 2), pcrx->inHead->payload));
samdanbury	6:37b6d0d56190	1732	#endif
samdanbury	6:37b6d0d56190	1733	PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
samdanbury	6:37b6d0d56190	1734	if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
samdanbury	6:37b6d0d56190	1735	pbuf_free(pcrx->inTail);
samdanbury	6:37b6d0d56190	1736	}
samdanbury	6:37b6d0d56190	1737	pbuf_free(pcrx->inHead);
samdanbury	6:37b6d0d56190	1738	pcrx->inHead = NULL;
samdanbury	6:37b6d0d56190	1739	pcrx->inTail = NULL;
samdanbury	6:37b6d0d56190	1740	}
samdanbury	6:37b6d0d56190	1741	#if VJ_SUPPORT
samdanbury	6:37b6d0d56190	1742	vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
samdanbury	6:37b6d0d56190	1743	#endif /* VJ_SUPPORT */
samdanbury	6:37b6d0d56190	1744
samdanbury	6:37b6d0d56190	1745	LINK_STATS_INC(link.drop);
samdanbury	6:37b6d0d56190	1746	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
samdanbury	6:37b6d0d56190	1747	}
samdanbury	6:37b6d0d56190	1748
samdanbury	6:37b6d0d56190	1749	/** Pass received raw characters to PPPoS to be decoded. This function is
samdanbury	6:37b6d0d56190	1750	* thread-safe and can be called from a dedicated RX-thread or from a main-loop.
samdanbury	6:37b6d0d56190	1751	*
samdanbury	6:37b6d0d56190	1752	* @param pd PPP descriptor index, returned by pppOpen()
samdanbury	6:37b6d0d56190	1753	* @param data received data
samdanbury	6:37b6d0d56190	1754	* @param len length of received data
samdanbury	6:37b6d0d56190	1755	*/
samdanbury	6:37b6d0d56190	1756	void
samdanbury	6:37b6d0d56190	1757	pppos_input(int pd, u_char* data, int len)
samdanbury	6:37b6d0d56190	1758	{
samdanbury	6:37b6d0d56190	1759	pppInProc(&pppControl[pd].rx, data, len);
samdanbury	6:37b6d0d56190	1760	}
samdanbury	6:37b6d0d56190	1761
samdanbury	6:37b6d0d56190	1762	/**
samdanbury	6:37b6d0d56190	1763	* Process a received octet string.
samdanbury	6:37b6d0d56190	1764	*/
samdanbury	6:37b6d0d56190	1765	static void
samdanbury	6:37b6d0d56190	1766	pppInProc(PPPControlRx pcrx, u_char s, int l)
samdanbury	6:37b6d0d56190	1767	{
samdanbury	6:37b6d0d56190	1768	struct pbuf *nextNBuf;
samdanbury	6:37b6d0d56190	1769	u_char curChar;
samdanbury	6:37b6d0d56190	1770	u_char escaped;
samdanbury	6:37b6d0d56190	1771	SYS_ARCH_DECL_PROTECT(lev);
samdanbury	6:37b6d0d56190	1772
samdanbury	6:37b6d0d56190	1773	PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
samdanbury	6:37b6d0d56190	1774	while (l-- > 0) {
samdanbury	6:37b6d0d56190	1775	curChar = *s++;
samdanbury	6:37b6d0d56190	1776
samdanbury	6:37b6d0d56190	1777	SYS_ARCH_PROTECT(lev);
samdanbury	6:37b6d0d56190	1778	escaped = ESCAPE_P(pcrx->inACCM, curChar);
samdanbury	6:37b6d0d56190	1779	SYS_ARCH_UNPROTECT(lev);
samdanbury	6:37b6d0d56190	1780	/* Handle special characters. */
samdanbury	6:37b6d0d56190	1781	if (escaped) {
samdanbury	6:37b6d0d56190	1782	/* Check for escape sequences. */
samdanbury	6:37b6d0d56190	1783	/* XXX Note that this does not handle an escaped 0x5d character which
samdanbury	6:37b6d0d56190	1784	* would appear as an escape character. Since this is an ASCII ']'
samdanbury	6:37b6d0d56190	1785	* and there is no reason that I know of to escape it, I won't complicate
samdanbury	6:37b6d0d56190	1786	* the code to handle this case. GLL */
samdanbury	6:37b6d0d56190	1787	if (curChar == PPP_ESCAPE) {
samdanbury	6:37b6d0d56190	1788	pcrx->inEscaped = 1;
samdanbury	6:37b6d0d56190	1789	/* Check for the flag character. */
samdanbury	6:37b6d0d56190	1790	} else if (curChar == PPP_FLAG) {
samdanbury	6:37b6d0d56190	1791	/* If this is just an extra flag character, ignore it. */
samdanbury	6:37b6d0d56190	1792	if (pcrx->inState <= PDADDRESS) {
samdanbury	6:37b6d0d56190	1793	/* ignore it */;
samdanbury	6:37b6d0d56190	1794	/* If we haven't received the packet header, drop what has come in. */
samdanbury	6:37b6d0d56190	1795	} else if (pcrx->inState < PDDATA) {
samdanbury	6:37b6d0d56190	1796	PPPDEBUG(LOG_WARNING,
samdanbury	6:37b6d0d56190	1797	("pppInProc[%d]: Dropping incomplete packet %d\n",
samdanbury	6:37b6d0d56190	1798	pcrx->pd, pcrx->inState));
samdanbury	6:37b6d0d56190	1799	LINK_STATS_INC(link.lenerr);
samdanbury	6:37b6d0d56190	1800	pppDrop(pcrx);
samdanbury	6:37b6d0d56190	1801	/* If the fcs is invalid, drop the packet. */
samdanbury	6:37b6d0d56190	1802	} else if (pcrx->inFCS != PPP_GOODFCS) {
samdanbury	6:37b6d0d56190	1803	PPPDEBUG(LOG_INFO,
samdanbury	6:37b6d0d56190	1804	("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
samdanbury	6:37b6d0d56190	1805	pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
samdanbury	6:37b6d0d56190	1806	/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
samdanbury	6:37b6d0d56190	1807	LINK_STATS_INC(link.chkerr);
samdanbury	6:37b6d0d56190	1808	pppDrop(pcrx);
samdanbury	6:37b6d0d56190	1809	/* Otherwise it's a good packet so pass it on. */
samdanbury	6:37b6d0d56190	1810	} else {
samdanbury	6:37b6d0d56190	1811	struct pbuf *inp;
samdanbury	6:37b6d0d56190	1812	/* Trim off the checksum. */
samdanbury	6:37b6d0d56190	1813	if(pcrx->inTail->len >= 2) {
samdanbury	6:37b6d0d56190	1814	pcrx->inTail->len -= 2;
samdanbury	6:37b6d0d56190	1815
samdanbury	6:37b6d0d56190	1816	pcrx->inTail->tot_len = pcrx->inTail->len;
samdanbury	6:37b6d0d56190	1817	if (pcrx->inTail != pcrx->inHead) {
samdanbury	6:37b6d0d56190	1818	pbuf_cat(pcrx->inHead, pcrx->inTail);
samdanbury	6:37b6d0d56190	1819	}
samdanbury	6:37b6d0d56190	1820	} else {
samdanbury	6:37b6d0d56190	1821	pcrx->inTail->tot_len = pcrx->inTail->len;
samdanbury	6:37b6d0d56190	1822	if (pcrx->inTail != pcrx->inHead) {
samdanbury	6:37b6d0d56190	1823	pbuf_cat(pcrx->inHead, pcrx->inTail);
samdanbury	6:37b6d0d56190	1824	}
samdanbury	6:37b6d0d56190	1825
samdanbury	6:37b6d0d56190	1826	pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
samdanbury	6:37b6d0d56190	1827	}
samdanbury	6:37b6d0d56190	1828
samdanbury	6:37b6d0d56190	1829	/* Dispatch the packet thereby consuming it. */
samdanbury	6:37b6d0d56190	1830	inp = pcrx->inHead;
samdanbury	6:37b6d0d56190	1831	/* Packet consumed, release our references. */
samdanbury	6:37b6d0d56190	1832	pcrx->inHead = NULL;
samdanbury	6:37b6d0d56190	1833	pcrx->inTail = NULL;
samdanbury	6:37b6d0d56190	1834	#if PPP_INPROC_MULTITHREADED
samdanbury	6:37b6d0d56190	1835	if(tcpip_callback_with_block(pppInput, inp, 0) != ERR_OK) {
samdanbury	6:37b6d0d56190	1836	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
samdanbury	6:37b6d0d56190	1837	pbuf_free(inp);
samdanbury	6:37b6d0d56190	1838	LINK_STATS_INC(link.drop);
samdanbury	6:37b6d0d56190	1839	snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
samdanbury	6:37b6d0d56190	1840	}
samdanbury	6:37b6d0d56190	1841	#else /* PPP_INPROC_MULTITHREADED */
samdanbury	6:37b6d0d56190	1842	pppInput(inp);
samdanbury	6:37b6d0d56190	1843	#endif /* PPP_INPROC_MULTITHREADED */
samdanbury	6:37b6d0d56190	1844	}
samdanbury	6:37b6d0d56190	1845
samdanbury	6:37b6d0d56190	1846	/* Prepare for a new packet. */
samdanbury	6:37b6d0d56190	1847	pcrx->inFCS = PPP_INITFCS;
samdanbury	6:37b6d0d56190	1848	pcrx->inState = PDADDRESS;
samdanbury	6:37b6d0d56190	1849	pcrx->inEscaped = 0;
samdanbury	6:37b6d0d56190	1850	/* Other characters are usually control characters that may have
samdanbury	6:37b6d0d56190	1851	* been inserted by the physical layer so here we just drop them. */
samdanbury	6:37b6d0d56190	1852	} else {
samdanbury	6:37b6d0d56190	1853	PPPDEBUG(LOG_WARNING,
samdanbury	6:37b6d0d56190	1854	("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
samdanbury	6:37b6d0d56190	1855	}
samdanbury	6:37b6d0d56190	1856	/* Process other characters. */
samdanbury	6:37b6d0d56190	1857	} else {
samdanbury	6:37b6d0d56190	1858	/* Unencode escaped characters. */
samdanbury	6:37b6d0d56190	1859	if (pcrx->inEscaped) {
samdanbury	6:37b6d0d56190	1860	pcrx->inEscaped = 0;
samdanbury	6:37b6d0d56190	1861	curChar ^= PPP_TRANS;
samdanbury	6:37b6d0d56190	1862	}
samdanbury	6:37b6d0d56190	1863
samdanbury	6:37b6d0d56190	1864	/* Process character relative to current state. */
samdanbury	6:37b6d0d56190	1865	switch(pcrx->inState) {
samdanbury	6:37b6d0d56190	1866	case PDIDLE: /* Idle state - waiting. */
samdanbury	6:37b6d0d56190	1867	/* Drop the character if it's not 0xff
samdanbury	6:37b6d0d56190	1868	* we would have processed a flag character above. */
samdanbury	6:37b6d0d56190	1869	if (curChar != PPP_ALLSTATIONS) {
samdanbury	6:37b6d0d56190	1870	break;
samdanbury	6:37b6d0d56190	1871	}
samdanbury	6:37b6d0d56190	1872
samdanbury	6:37b6d0d56190	1873	/* Fall through */
samdanbury	6:37b6d0d56190	1874	case PDSTART: /* Process start flag. */
samdanbury	6:37b6d0d56190	1875	/* Prepare for a new packet. */
samdanbury	6:37b6d0d56190	1876	pcrx->inFCS = PPP_INITFCS;
samdanbury	6:37b6d0d56190	1877
samdanbury	6:37b6d0d56190	1878	/* Fall through */
samdanbury	6:37b6d0d56190	1879	case PDADDRESS: /* Process address field. */
samdanbury	6:37b6d0d56190	1880	if (curChar == PPP_ALLSTATIONS) {
samdanbury	6:37b6d0d56190	1881	pcrx->inState = PDCONTROL;
samdanbury	6:37b6d0d56190	1882	break;
samdanbury	6:37b6d0d56190	1883	}
samdanbury	6:37b6d0d56190	1884	/* Else assume compressed address and control fields so
samdanbury	6:37b6d0d56190	1885	* fall through to get the protocol... */
samdanbury	6:37b6d0d56190	1886	case PDCONTROL: /* Process control field. */
samdanbury	6:37b6d0d56190	1887	/* If we don't get a valid control code, restart. */
samdanbury	6:37b6d0d56190	1888	if (curChar == PPP_UI) {
samdanbury	6:37b6d0d56190	1889	pcrx->inState = PDPROTOCOL1;
samdanbury	6:37b6d0d56190	1890	break;
samdanbury	6:37b6d0d56190	1891	}
samdanbury	6:37b6d0d56190	1892	#if 0
samdanbury	6:37b6d0d56190	1893	else {
samdanbury	6:37b6d0d56190	1894	PPPDEBUG(LOG_WARNING,
samdanbury	6:37b6d0d56190	1895	("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
samdanbury	6:37b6d0d56190	1896	pcrx->inState = PDSTART;
samdanbury	6:37b6d0d56190	1897	}
samdanbury	6:37b6d0d56190	1898	#endif
samdanbury	6:37b6d0d56190	1899	case PDPROTOCOL1: /* Process protocol field 1. */
samdanbury	6:37b6d0d56190	1900	/* If the lower bit is set, this is the end of the protocol
samdanbury	6:37b6d0d56190	1901	* field. */
samdanbury	6:37b6d0d56190	1902	if (curChar & 1) {
samdanbury	6:37b6d0d56190	1903	pcrx->inProtocol = curChar;
samdanbury	6:37b6d0d56190	1904	pcrx->inState = PDDATA;
samdanbury	6:37b6d0d56190	1905	} else {
samdanbury	6:37b6d0d56190	1906	pcrx->inProtocol = (u_int)curChar << 8;
samdanbury	6:37b6d0d56190	1907	pcrx->inState = PDPROTOCOL2;
samdanbury	6:37b6d0d56190	1908	}
samdanbury	6:37b6d0d56190	1909	break;
samdanbury	6:37b6d0d56190	1910	case PDPROTOCOL2: /* Process protocol field 2. */
samdanbury	6:37b6d0d56190	1911	pcrx->inProtocol \|= curChar;
samdanbury	6:37b6d0d56190	1912	pcrx->inState = PDDATA;
samdanbury	6:37b6d0d56190	1913	break;
samdanbury	6:37b6d0d56190	1914	case PDDATA: /* Process data byte. */
samdanbury	6:37b6d0d56190	1915	/* Make space to receive processed data. */
samdanbury	6:37b6d0d56190	1916	if (pcrx->inTail == NULL \|\| pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
samdanbury	6:37b6d0d56190	1917	if (pcrx->inTail != NULL) {
samdanbury	6:37b6d0d56190	1918	pcrx->inTail->tot_len = pcrx->inTail->len;
samdanbury	6:37b6d0d56190	1919	if (pcrx->inTail != pcrx->inHead) {
samdanbury	6:37b6d0d56190	1920	pbuf_cat(pcrx->inHead, pcrx->inTail);
samdanbury	6:37b6d0d56190	1921	/* give up the inTail reference now */
samdanbury	6:37b6d0d56190	1922	pcrx->inTail = NULL;
samdanbury	6:37b6d0d56190	1923	}
samdanbury	6:37b6d0d56190	1924	}
samdanbury	6:37b6d0d56190	1925	/* If we haven't started a packet, we need a packet header. */
samdanbury	6:37b6d0d56190	1926	nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
samdanbury	6:37b6d0d56190	1927	if (nextNBuf == NULL) {
samdanbury	6:37b6d0d56190	1928	/* No free buffers. Drop the input packet and let the
samdanbury	6:37b6d0d56190	1929	* higher layers deal with it. Continue processing
samdanbury	6:37b6d0d56190	1930	* the received pbuf chain in case a new packet starts. */
samdanbury	6:37b6d0d56190	1931	PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
samdanbury	6:37b6d0d56190	1932	LINK_STATS_INC(link.memerr);
samdanbury	6:37b6d0d56190	1933	pppDrop(pcrx);
samdanbury	6:37b6d0d56190	1934	pcrx->inState = PDSTART; /* Wait for flag sequence. */
samdanbury	6:37b6d0d56190	1935	break;
samdanbury	6:37b6d0d56190	1936	}
samdanbury	6:37b6d0d56190	1937	if (pcrx->inHead == NULL) {
samdanbury	6:37b6d0d56190	1938	struct pppInputHeader *pih = nextNBuf->payload;
samdanbury	6:37b6d0d56190	1939
samdanbury	6:37b6d0d56190	1940	pih->unit = pcrx->pd;
samdanbury	6:37b6d0d56190	1941	pih->proto = pcrx->inProtocol;
samdanbury	6:37b6d0d56190	1942
samdanbury	6:37b6d0d56190	1943	nextNBuf->len += sizeof(*pih);
samdanbury	6:37b6d0d56190	1944
samdanbury	6:37b6d0d56190	1945	pcrx->inHead = nextNBuf;
samdanbury	6:37b6d0d56190	1946	}
samdanbury	6:37b6d0d56190	1947	pcrx->inTail = nextNBuf;
samdanbury	6:37b6d0d56190	1948	}
samdanbury	6:37b6d0d56190	1949	/* Load character into buffer. */
samdanbury	6:37b6d0d56190	1950	((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
samdanbury	6:37b6d0d56190	1951	break;
samdanbury	6:37b6d0d56190	1952	}
samdanbury	6:37b6d0d56190	1953
samdanbury	6:37b6d0d56190	1954	/* update the frame check sequence number. */
samdanbury	6:37b6d0d56190	1955	pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
samdanbury	6:37b6d0d56190	1956	}
samdanbury	6:37b6d0d56190	1957	} /* while (l-- > 0), all bytes processed */
samdanbury	6:37b6d0d56190	1958
samdanbury	6:37b6d0d56190	1959	avRandomize();
samdanbury	6:37b6d0d56190	1960	}
samdanbury	6:37b6d0d56190	1961	#endif /* PPPOS_SUPPORT */
samdanbury	6:37b6d0d56190	1962
samdanbury	6:37b6d0d56190	1963	#if PPPOE_SUPPORT
samdanbury	6:37b6d0d56190	1964	void
samdanbury	6:37b6d0d56190	1965	pppInProcOverEthernet(int pd, struct pbuf *pb)
samdanbury	6:37b6d0d56190	1966	{
samdanbury	6:37b6d0d56190	1967	struct pppInputHeader *pih;
samdanbury	6:37b6d0d56190	1968	u16_t inProtocol;
samdanbury	6:37b6d0d56190	1969
samdanbury	6:37b6d0d56190	1970	if(pb->len < sizeof(inProtocol)) {
samdanbury	6:37b6d0d56190	1971	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
samdanbury	6:37b6d0d56190	1972	goto drop;
samdanbury	6:37b6d0d56190	1973	}
samdanbury	6:37b6d0d56190	1974
samdanbury	6:37b6d0d56190	1975	inProtocol = (((u8_t )pb->payload)[0] << 8) \| ((u8_t)pb->payload)[1];
samdanbury	6:37b6d0d56190	1976
samdanbury	6:37b6d0d56190	1977	/* make room for pppInputHeader - should not fail */
samdanbury	6:37b6d0d56190	1978	if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
samdanbury	6:37b6d0d56190	1979	PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
samdanbury	6:37b6d0d56190	1980	goto drop;
samdanbury	6:37b6d0d56190	1981	}
samdanbury	6:37b6d0d56190	1982
samdanbury	6:37b6d0d56190	1983	pih = pb->payload;
samdanbury	6:37b6d0d56190	1984
samdanbury	6:37b6d0d56190	1985	pih->unit = pd;
samdanbury	6:37b6d0d56190	1986	pih->proto = inProtocol;
samdanbury	6:37b6d0d56190	1987
samdanbury	6:37b6d0d56190	1988	/* Dispatch the packet thereby consuming it. */
samdanbury	6:37b6d0d56190	1989	pppInput(pb);
samdanbury	6:37b6d0d56190	1990	return;
samdanbury	6:37b6d0d56190	1991
samdanbury	6:37b6d0d56190	1992	drop:
samdanbury	6:37b6d0d56190	1993	LINK_STATS_INC(link.drop);
samdanbury	6:37b6d0d56190	1994	snmp_inc_ifindiscards(&pppControl[pd].netif);
samdanbury	6:37b6d0d56190	1995	pbuf_free(pb);
samdanbury	6:37b6d0d56190	1996	return;
samdanbury	6:37b6d0d56190	1997	}
samdanbury	6:37b6d0d56190	1998	#endif /* PPPOE_SUPPORT */
samdanbury	6:37b6d0d56190	1999
samdanbury	6:37b6d0d56190	2000	#if LWIP_NETIF_STATUS_CALLBACK
samdanbury	6:37b6d0d56190	2001	/** Set the status callback of a PPP's netif
samdanbury	6:37b6d0d56190	2002	*
samdanbury	6:37b6d0d56190	2003	* @param pd The PPP descriptor returned by pppOpen()
samdanbury	6:37b6d0d56190	2004	* @param status_callback pointer to the status callback function
samdanbury	6:37b6d0d56190	2005	*
samdanbury	6:37b6d0d56190	2006	* @see netif_set_status_callback
samdanbury	6:37b6d0d56190	2007	*/
samdanbury	6:37b6d0d56190	2008	void
samdanbury	6:37b6d0d56190	2009	ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
samdanbury	6:37b6d0d56190	2010	{
samdanbury	6:37b6d0d56190	2011	netif_set_status_callback(&pppControl[pd].netif, status_callback);
samdanbury	6:37b6d0d56190	2012	}
samdanbury	6:37b6d0d56190	2013	#endif /* LWIP_NETIF_STATUS_CALLBACK */
samdanbury	6:37b6d0d56190	2014
samdanbury	6:37b6d0d56190	2015	#if LWIP_NETIF_LINK_CALLBACK
samdanbury	6:37b6d0d56190	2016	/** Set the link callback of a PPP's netif
samdanbury	6:37b6d0d56190	2017	*
samdanbury	6:37b6d0d56190	2018	* @param pd The PPP descriptor returned by pppOpen()
samdanbury	6:37b6d0d56190	2019	* @param link_callback pointer to the link callback function
samdanbury	6:37b6d0d56190	2020	*
samdanbury	6:37b6d0d56190	2021	* @see netif_set_link_callback
samdanbury	6:37b6d0d56190	2022	*/
samdanbury	6:37b6d0d56190	2023	void
samdanbury	6:37b6d0d56190	2024	ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
samdanbury	6:37b6d0d56190	2025	{
samdanbury	6:37b6d0d56190	2026	netif_set_link_callback(&pppControl[pd].netif, link_callback);
samdanbury	6:37b6d0d56190	2027	}
samdanbury	6:37b6d0d56190	2028	#endif /* LWIP_NETIF_LINK_CALLBACK */
samdanbury	6:37b6d0d56190	2029
samdanbury	6:37b6d0d56190	2030	#endif /* PPP_SUPPORT */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	12 Mar 2015
Imports:	43
Forks:	1
Commits:	12
Dependents:	0
Dependencies:	7
Followers:	86

EthernetInterface/lwip/netif/ppp/ppp.c@6:37b6d0d56190, 2014-08-20 (annotated)

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