]>
git.gir.st - tmk_keyboard.git/blob - tmk_core/tool/mbed/mbed-sdk/libraries/net/lwip/lwip/netif/ppp/ppp_oe.c
1 /*****************************************************************************
2 * ppp_oe.c - PPP Over Ethernet implementation for lwIP.
4 * Copyright (c) 2006 by Marc Boucher, Services Informatiques (MBSI) inc.
6 * The authors hereby grant permission to use, copy, modify, distribute,
7 * and license this software and its documentation for any purpose, provided
8 * that existing copyright notices are retained in all copies and that this
9 * notice and the following disclaimer are included verbatim in any
10 * distributions. No written agreement, license, or royalty fee is required
11 * for any of the authorized uses.
13 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 ******************************************************************************
27 * 06-01-01 Marc Boucher <marc@mbsi.ca>
29 *****************************************************************************/
33 /* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */
36 * Copyright (c) 2002 The NetBSD Foundation, Inc.
37 * All rights reserved.
39 * This code is derived from software contributed to The NetBSD Foundation
40 * by Martin Husemann <martin@NetBSD.org>.
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
45 * 1. Redistributions of source code must retain the above copyright
46 * notice, this list of conditions and the following disclaimer.
47 * 2. Redistributions in binary form must reproduce the above copyright
48 * notice, this list of conditions and the following disclaimer in the
49 * documentation and/or other materials provided with the distribution.
50 * 3. All advertising materials mentioning features or use of this software
51 * must display the following acknowledgement:
52 * This product includes software developed by the NetBSD
53 * Foundation, Inc. and its contributors.
54 * 4. Neither the name of The NetBSD Foundation nor the names of its
55 * contributors may be used to endorse or promote products derived
56 * from this software without specific prior written permission.
58 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
59 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
60 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
61 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
62 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
63 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
64 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
65 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
66 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
67 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
68 * POSSIBILITY OF SUCH DAMAGE.
73 #if PPPOE_SUPPORT /* don't build if not configured for use in lwipopts.h */
75 #include "netif/ppp_oe.h"
80 #include "lwip/timers.h"
81 #include "lwip/memp.h"
87 /* Add a 16 bit unsigned value to a buffer pointed to by PTR */
88 #define PPPOE_ADD_16(PTR, VAL) \
89 *(PTR)++ = (u8_t)((VAL) / 256); \
90 *(PTR)++ = (u8_t)((VAL) % 256)
92 /* Add a complete PPPoE header to the buffer pointed to by PTR */
93 #define PPPOE_ADD_HEADER(PTR, CODE, SESS, LEN) \
94 *(PTR)++ = PPPOE_VERTYPE; \
96 PPPOE_ADD_16(PTR, SESS); \
97 PPPOE_ADD_16(PTR, LEN)
99 #define PPPOE_DISC_TIMEOUT (5*1000) /* base for quick timeout calculation */
100 #define PPPOE_SLOW_RETRY (60*1000) /* persistent retry interval */
101 #define PPPOE_DISC_MAXPADI 4 /* retry PADI four times (quickly) */
102 #define PPPOE_DISC_MAXPADR 2 /* retry PADR twice */
105 #error "PPPOE_SERVER is not yet supported under lwIP!"
106 /* from if_spppsubr.c */
107 #define IFF_PASSIVE IFF_LINK0 /* wait passively for connection */
110 #ifndef PPPOE_ERRORSTRING_LEN
111 #define PPPOE_ERRORSTRING_LEN 64
113 static char pppoe_error_tmp
[ PPPOE_ERRORSTRING_LEN
];
117 static void pppoe_dispatch_disc_pkt ( struct netif
*, struct pbuf
*);
119 /* management routines */
120 static int pppoe_do_disconnect ( struct pppoe_softc
*);
121 static void pppoe_abort_connect ( struct pppoe_softc
*);
122 static void pppoe_clear_softc ( struct pppoe_softc
*, const char *);
124 /* internal timeout handling */
125 static void pppoe_timeout ( void *);
127 /* sending actual protocol controll packets */
128 static err_t
pppoe_send_padi ( struct pppoe_softc
*);
129 static err_t
pppoe_send_padr ( struct pppoe_softc
*);
131 static err_t
pppoe_send_pado ( struct pppoe_softc
*);
132 static err_t
pppoe_send_pads ( struct pppoe_softc
*);
134 static err_t
pppoe_send_padt ( struct netif
*, u_int
, const u8_t
*);
136 /* internal helper functions */
137 static struct pppoe_softc
* pppoe_find_softc_by_session ( u_int
, struct netif
*);
138 static struct pppoe_softc
* pppoe_find_softc_by_hunique ( u8_t
*, size_t , struct netif
*);
140 /** linked list of created pppoe interfaces */
141 static struct pppoe_softc
* pppoe_softc_list
;
144 pppoe_create ( struct netif
* ethif
, int pd
, void (* linkStatusCB
)( int pd
, int up
), struct pppoe_softc
** scptr
)
146 struct pppoe_softc
* sc
;
148 sc
= ( struct pppoe_softc
*) memp_malloc ( MEMP_PPPOE_IF
);
153 memset ( sc
, 0 , sizeof ( struct pppoe_softc
));
155 /* changed to real address later */
156 MEMCPY (& sc
-> sc_dest
, ethbroadcast
. addr
, sizeof ( sc
-> sc_dest
));
159 sc
-> sc_linkStatusCB
= linkStatusCB
;
160 sc
-> sc_ethif
= ethif
;
162 /* put the new interface at the head of the list */
163 sc
-> next
= pppoe_softc_list
;
164 pppoe_softc_list
= sc
;
172 pppoe_destroy ( struct netif
* ifp
)
174 struct pppoe_softc
* sc
, * prev
= NULL
;
176 for ( sc
= pppoe_softc_list
; sc
!= NULL
; prev
= sc
, sc
= sc
-> next
) {
177 if ( sc
-> sc_ethif
== ifp
) {
182 if (!( sc
&& ( sc
-> sc_ethif
== ifp
))) {
186 sys_untimeout ( pppoe_timeout
, sc
);
188 /* remove sc from the head of the list */
189 pppoe_softc_list
= sc
-> next
;
191 /* remove sc from the list */
192 prev
-> next
= sc
-> next
;
196 if ( sc
-> sc_concentrator_name
) {
197 mem_free ( sc
-> sc_concentrator_name
);
199 if ( sc
-> sc_service_name
) {
200 mem_free ( sc
-> sc_service_name
);
202 #endif /* PPPOE_TODO */
203 memp_free ( MEMP_PPPOE_IF
, sc
);
209 * Find the interface handling the specified session.
210 * Note: O(number of sessions open), this is a client-side only, mean
211 * and lean implementation, so number of open sessions typically should
214 static struct pppoe_softc
*
215 pppoe_find_softc_by_session ( u_int session
, struct netif
* rcvif
)
217 struct pppoe_softc
* sc
;
223 for ( sc
= pppoe_softc_list
; sc
!= NULL
; sc
= sc
-> next
) {
224 if ( sc
-> sc_state
== PPPOE_STATE_SESSION
225 && sc
-> sc_session
== session
) {
226 if ( sc
-> sc_ethif
== rcvif
) {
236 /* Check host unique token passed and return appropriate softc pointer,
237 * or NULL if token is bogus. */
238 static struct pppoe_softc
*
239 pppoe_find_softc_by_hunique ( u8_t
* token
, size_t len
, struct netif
* rcvif
)
241 struct pppoe_softc
* sc
, * t
;
243 if ( pppoe_softc_list
== NULL
) {
247 if ( len
!= sizeof sc
) {
250 MEMCPY (& t
, token
, len
);
252 for ( sc
= pppoe_softc_list
; sc
!= NULL
; sc
= sc
-> next
) {
259 PPPDEBUG ( LOG_DEBUG
, ( "pppoe: alien host unique tag, no session found \n " ));
263 /* should be safe to access *sc now */
264 if ( sc
-> sc_state
< PPPOE_STATE_PADI_SENT
|| sc
-> sc_state
>= PPPOE_STATE_SESSION
) {
265 printf ( "%c%c%" U16_F
": host unique tag found, but it belongs to a connection in state %d \n " ,
266 sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
, sc
-> sc_state
);
269 if ( sc
-> sc_ethif
!= rcvif
) {
270 printf ( "%c%c%" U16_F
": wrong interface, not accepting host unique \n " ,
271 sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
);
278 pppoe_linkstatus_up ( struct pppoe_softc
* sc
)
280 sc
-> sc_linkStatusCB ( sc
-> sc_pd
, 1 );
283 /* analyze and handle a single received packet while not in session state */
285 pppoe_dispatch_disc_pkt ( struct netif
* netif
, struct pbuf
* pb
)
289 struct pppoe_softc
* sc
;
300 int off
, err
, errortag
;
301 struct eth_hdr
* ethhdr
;
303 pb
= pppSingleBuf ( pb
);
305 strcpy ( devname
, "pppoe" ); /* as long as we don't know which instance */
308 if ( pb
-> len
< sizeof (* ethhdr
)) {
311 ethhdr
= ( struct eth_hdr
*) pb
-> payload
;
312 off
= sizeof (* ethhdr
);
321 if ( pb
-> len
- off
< PPPOE_HEADERLEN
) {
322 printf ( "pppoe: packet too short: %d \n " , pb
-> len
);
326 ph
= ( struct pppoehdr
*) ( ethhdr
+ 1 );
327 if ( ph
-> vertype
!= PPPOE_VERTYPE
) {
328 printf ( "pppoe: unknown version/type packet: 0x%x \n " , ph
-> vertype
);
331 session
= ntohs ( ph
-> session
);
332 plen
= ntohs ( ph
-> plen
);
335 if ( plen
+ off
> pb
-> len
) {
336 printf ( "pppoe: packet content does not fit: data available = %d, packet size = %u \n " ,
337 pb
-> len
- off
, plen
);
340 if ( pb
-> tot_len
== pb
-> len
) {
341 pb
-> tot_len
= pb
-> len
= ( u16_t
) off
+ plen
; /* ignore trailing garbage */
346 while ( off
+ sizeof ( pt
) <= pb
-> len
) {
347 MEMCPY (& pt
, ( u8_t
*) pb
-> payload
+ off
, sizeof ( pt
));
350 if ( off
+ sizeof ( pt
) + len
> pb
-> len
) {
351 printf ( "pppoe: tag 0x%x len 0x%x is too long \n " , tag
, len
);
357 case PPPOE_TAG_SNAME
:
359 case PPPOE_TAG_ACNAME
:
361 case PPPOE_TAG_HUNIQUE
:
366 hunique
= ( u8_t
*) pb
-> payload
+ off
+ sizeof ( pt
);
369 sc
= pppoe_find_softc_by_hunique (( u8_t
*) pb
-> payload
+ off
+ sizeof ( pt
), len
, netif
);
371 snprintf ( devname
, sizeof ( devname
), "%c%c%" U16_F
, sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
);
374 case PPPOE_TAG_ACCOOKIE
:
375 if ( ac_cookie
== NULL
) {
376 ac_cookie
= ( u8_t
*) pb
-> payload
+ off
+ sizeof ( pt
);
380 case PPPOE_TAG_SNAME_ERR
:
381 err_msg
= "SERVICE NAME ERROR" ;
384 case PPPOE_TAG_ACSYS_ERR
:
385 err_msg
= "AC SYSTEM ERROR" ;
388 case PPPOE_TAG_GENERIC_ERR
:
389 err_msg
= "GENERIC ERROR" ;
394 if ( errortag
&& len
) {
395 u16_t error_len
= LWIP_MIN ( len
, sizeof ( pppoe_error_tmp
)- 1 );
396 strncpy ( pppoe_error_tmp
, ( char *) pb
-> payload
+ off
+ sizeof ( pt
), error_len
);
397 pppoe_error_tmp
[ error_len
- 1 ] = '\0' ;
398 printf ( "%s: %s: %s \n " , devname
, err_msg
, pppoe_error_tmp
);
400 printf ( "%s: %s \n " , devname
, err_msg
);
406 off
+= sizeof ( pt
) + len
;
411 case PPPOE_CODE_PADI
:
414 * got service name, concentrator name, and/or host unique.
415 * ignore if we have no interfaces with IFF_PASSIVE|IFF_UP.
417 if ( LIST_EMPTY (& pppoe_softc_list
)) {
420 LIST_FOREACH ( sc
, & pppoe_softc_list
, sc_list
) {
421 if (!( sc
-> sc_sppp
. pp_if
. if_flags
& IFF_UP
)) {
424 if (!( sc
-> sc_sppp
. pp_if
. if_flags
& IFF_PASSIVE
)) {
427 if ( sc
-> sc_state
== PPPOE_STATE_INITIAL
) {
432 /* printf("pppoe: free passive interface is not found\n"); */
436 if ( sc
-> sc_hunique
) {
437 mem_free ( sc
-> sc_hunique
);
439 sc
-> sc_hunique
= mem_malloc ( hunique_len
);
440 if ( sc
-> sc_hunique
== NULL
) {
443 sc
-> sc_hunique_len
= hunique_len
;
444 MEMCPY ( sc
-> sc_hunique
, hunique
, hunique_len
);
446 MEMCPY (& sc
-> sc_dest
, eh
-> ether_shost
, sizeof sc
-> sc_dest
);
447 sc
-> sc_state
= PPPOE_STATE_PADO_SENT
;
450 #endif /* PPPOE_SERVER */
451 case PPPOE_CODE_PADR
:
454 * get sc from ac_cookie if IFF_PASSIVE
456 if ( ac_cookie
== NULL
) {
457 /* be quiet if there is not a single pppoe instance */
458 printf ( "pppoe: received PADR but not includes ac_cookie \n " );
461 sc
= pppoe_find_softc_by_hunique ( ac_cookie
, ac_cookie_len
, netif
);
463 /* be quiet if there is not a single pppoe instance */
464 if (! LIST_EMPTY (& pppoe_softc_list
)) {
465 printf ( "pppoe: received PADR but could not find request for it \n " );
469 if ( sc
-> sc_state
!= PPPOE_STATE_PADO_SENT
) {
470 printf ( "%c%c%" U16_F
": received unexpected PADR \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
);
474 if ( sc
-> sc_hunique
) {
475 mem_free ( sc
-> sc_hunique
);
477 sc
-> sc_hunique
= mem_malloc ( hunique_len
);
478 if ( sc
-> sc_hunique
== NULL
) {
481 sc
-> sc_hunique_len
= hunique_len
;
482 MEMCPY ( sc
-> sc_hunique
, hunique
, hunique_len
);
485 sc
-> sc_state
= PPPOE_STATE_SESSION
;
486 pppoe_linkstatus_up ( sc
); /* notify upper layers */
489 /* ignore, we are no access concentrator */
491 #endif /* PPPOE_SERVER */
492 case PPPOE_CODE_PADO
:
494 /* be quiet if there is not a single pppoe instance */
495 if ( pppoe_softc_list
!= NULL
) {
496 printf ( "pppoe: received PADO but could not find request for it \n " );
500 if ( sc
-> sc_state
!= PPPOE_STATE_PADI_SENT
) {
501 printf ( "%c%c%" U16_F
": received unexpected PADO \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
);
505 sc
-> sc_ac_cookie_len
= ac_cookie_len
;
506 MEMCPY ( sc
-> sc_ac_cookie
, ac_cookie
, ac_cookie_len
);
508 MEMCPY (& sc
-> sc_dest
, ethhdr
-> src
. addr
, sizeof ( sc
-> sc_dest
. addr
));
509 sys_untimeout ( pppoe_timeout
, sc
);
510 sc
-> sc_padr_retried
= 0 ;
511 sc
-> sc_state
= PPPOE_STATE_PADR_SENT
;
512 if (( err
= pppoe_send_padr ( sc
)) != 0 ) {
513 PPPDEBUG ( LOG_DEBUG
, ( "pppoe: %c%c%" U16_F
": failed to send PADR, error=%d \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
, err
));
515 sys_timeout ( PPPOE_DISC_TIMEOUT
* ( 1 + sc
-> sc_padr_retried
), pppoe_timeout
, sc
);
517 case PPPOE_CODE_PADS
:
521 sc
-> sc_session
= session
;
522 sys_untimeout ( pppoe_timeout
, sc
);
523 PPPDEBUG ( LOG_DEBUG
, ( "pppoe: %c%c%" U16_F
": session 0x%x connected \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
, session
));
524 sc
-> sc_state
= PPPOE_STATE_SESSION
;
525 pppoe_linkstatus_up ( sc
); /* notify upper layers */
527 case PPPOE_CODE_PADT
:
531 pppoe_clear_softc ( sc
, "received PADT" );
535 printf ( "%c%c%" U16_F
": unknown code (0x%" X16_F
") session = 0x%" X16_F
" \n " ,
536 sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
,
537 ( u16_t
) ph
-> code
, session
);
539 printf ( "pppoe: unknown code (0x%" X16_F
") session = 0x%" X16_F
" \n " , ( u16_t
) ph
-> code
, session
);
550 pppoe_disc_input ( struct netif
* netif
, struct pbuf
* p
)
552 /* avoid error messages if there is not a single pppoe instance */
553 if ( pppoe_softc_list
!= NULL
) {
554 pppoe_dispatch_disc_pkt ( netif
, p
);
561 pppoe_data_input ( struct netif
* netif
, struct pbuf
* pb
)
564 struct pppoe_softc
* sc
;
566 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
567 u8_t shost
[ ETHER_ADDR_LEN
];
570 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
571 MEMCPY ( shost
, (( struct eth_hdr
*) pb
-> payload
)-> src
. addr
, sizeof ( shost
));
573 if ( pbuf_header ( pb
, -( int ) sizeof ( struct eth_hdr
)) != 0 ) {
575 PPPDEBUG ( LOG_ERR
, ( "pppoe_data_input: pbuf_header failed \n " ));
576 LINK_STATS_INC ( link
. lenerr
);
580 pb
= pppSingleBuf ( pb
);
582 if ( pb
-> len
<= PPPOE_HEADERLEN
) {
583 printf ( "pppoe (data): dropping too short packet: %d bytes \n " , pb
-> len
);
587 if ( pb
-> len
< sizeof (* ph
)) {
588 printf ( "pppoe_data_input: could not get PPPoE header \n " );
591 ph
= ( struct pppoehdr
*) pb
-> payload
;
593 if ( ph
-> vertype
!= PPPOE_VERTYPE
) {
594 printf ( "pppoe (data): unknown version/type packet: 0x%x \n " , ph
-> vertype
);
601 session
= ntohs ( ph
-> session
);
602 sc
= pppoe_find_softc_by_session ( session
, netif
);
604 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
605 printf ( "pppoe: input for unknown session 0x%x, sending PADT \n " , session
);
606 pppoe_send_padt ( netif
, session
, shost
);
611 plen
= ntohs ( ph
-> plen
);
613 if ( pbuf_header ( pb
, -( int )( PPPOE_HEADERLEN
)) != 0 ) {
615 PPPDEBUG ( LOG_ERR
, ( "pppoe_data_input: pbuf_header PPPOE_HEADERLEN failed \n " ));
616 LINK_STATS_INC ( link
. lenerr
);
620 PPPDEBUG ( LOG_DEBUG
, ( "pppoe_data_input: %c%c%" U16_F
": pkthdr.len=%d, pppoe.len=%d \n " ,
621 sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
,
624 if ( pb
-> len
< plen
) {
628 pppInProcOverEthernet ( sc
-> sc_pd
, pb
);
637 pppoe_output ( struct pppoe_softc
* sc
, struct pbuf
* pb
)
639 struct eth_hdr
* ethhdr
;
648 ethhdr
= ( struct eth_hdr
*) pb
-> payload
;
649 etype
= sc
-> sc_state
== PPPOE_STATE_SESSION
? ETHTYPE_PPPOE
: ETHTYPE_PPPOEDISC
;
650 ethhdr
-> type
= htons ( etype
);
651 MEMCPY ( ethhdr
-> dest
. addr
, sc
-> sc_dest
. addr
, sizeof ( ethhdr
-> dest
. addr
));
652 MEMCPY ( ethhdr
-> src
. addr
, (( struct eth_addr
*) sc
-> sc_ethif
-> hwaddr
)-> addr
, sizeof ( ethhdr
-> src
. addr
));
654 PPPDEBUG ( LOG_DEBUG
, ( "pppoe: %c%c%" U16_F
" (%x) state=%d, session=0x%x output -> %02" X16_F
":%02" X16_F
":%02" X16_F
":%02" X16_F
":%02" X16_F
":%02" X16_F
", len=%d \n " ,
655 sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
, etype
,
656 sc
-> sc_state
, sc
-> sc_session
,
657 sc
-> sc_dest
. addr
[ 0 ], sc
-> sc_dest
. addr
[ 1 ], sc
-> sc_dest
. addr
[ 2 ], sc
-> sc_dest
. addr
[ 3 ], sc
-> sc_dest
. addr
[ 4 ], sc
-> sc_dest
. addr
[ 5 ],
660 res
= sc
-> sc_ethif
-> linkoutput ( sc
-> sc_ethif
, pb
);
668 pppoe_send_padi ( struct pppoe_softc
* sc
)
674 int l1
= 0 , l2
= 0 ; /* XXX: gcc */
675 #endif /* PPPOE_TODO */
677 if ( sc
-> sc_state
> PPPOE_STATE_PADI_SENT
) {
678 PPPDEBUG ( LOG_ERR
, ( "ERROR: pppoe_send_padi in state %d" , sc
-> sc_state
));
681 /* calculate length of frame (excluding ethernet header + pppoe header) */
682 len
= 2 + 2 + 2 + 2 + sizeof sc
; /* service name tag is required, host unique is send too */
684 if ( sc
-> sc_service_name
!= NULL
) {
685 l1
= ( int ) strlen ( sc
-> sc_service_name
);
688 if ( sc
-> sc_concentrator_name
!= NULL
) {
689 l2
= ( int ) strlen ( sc
-> sc_concentrator_name
);
692 #endif /* PPPOE_TODO */
693 LWIP_ASSERT ( "sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff" ,
694 sizeof ( struct eth_hdr
) + PPPOE_HEADERLEN
+ len
<= 0xffff );
696 /* allocate a buffer */
697 pb
= pbuf_alloc ( PBUF_LINK
, ( u16_t
)( sizeof ( struct eth_hdr
) + PPPOE_HEADERLEN
+ len
), PBUF_RAM
);
701 LWIP_ASSERT ( "pb->tot_len == pb->len" , pb
-> tot_len
== pb
-> len
);
703 p
= ( u8_t
*) pb
-> payload
+ sizeof ( struct eth_hdr
);
705 PPPOE_ADD_HEADER ( p
, PPPOE_CODE_PADI
, 0 , ( u16_t
) len
);
706 PPPOE_ADD_16 ( p
, PPPOE_TAG_SNAME
);
708 if ( sc
-> sc_service_name
!= NULL
) {
710 MEMCPY ( p
, sc
-> sc_service_name
, l1
);
713 #endif /* PPPOE_TODO */
718 if ( sc
-> sc_concentrator_name
!= NULL
) {
719 PPPOE_ADD_16 ( p
, PPPOE_TAG_ACNAME
);
721 MEMCPY ( p
, sc
-> sc_concentrator_name
, l2
);
724 #endif /* PPPOE_TODO */
725 PPPOE_ADD_16 ( p
, PPPOE_TAG_HUNIQUE
);
726 PPPOE_ADD_16 ( p
, sizeof ( sc
));
727 MEMCPY ( p
, & sc
, sizeof sc
);
730 return pppoe_output ( sc
, pb
);
734 pppoe_timeout ( void * arg
)
737 struct pppoe_softc
* sc
= ( struct pppoe_softc
*) arg
;
739 PPPDEBUG ( LOG_DEBUG
, ( "pppoe: %c%c%" U16_F
": timeout \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
));
741 switch ( sc
-> sc_state
) {
742 case PPPOE_STATE_PADI_SENT
:
744 * We have two basic ways of retrying:
745 * - Quick retry mode: try a few times in short sequence
746 * - Slow retry mode: we already had a connection successfully
747 * established and will try infinitely (without user
749 * We only enter slow retry mode if IFF_LINK1 (aka autodial)
753 /* initialize for quick retry mode */
754 retry_wait
= PPPOE_DISC_TIMEOUT
* ( 1 + sc
-> sc_padi_retried
);
756 sc
-> sc_padi_retried
++;
757 if ( sc
-> sc_padi_retried
>= PPPOE_DISC_MAXPADI
) {
759 if (( sc
-> sc_sppp
. pp_if
. if_flags
& IFF_LINK1
) == 0 ) {
760 /* slow retry mode */
761 retry_wait
= PPPOE_SLOW_RETRY
;
765 pppoe_abort_connect ( sc
);
769 if (( err
= pppoe_send_padi ( sc
)) != 0 ) {
770 sc
-> sc_padi_retried
--;
771 PPPDEBUG ( LOG_DEBUG
, ( "pppoe: %c%c%" U16_F
": failed to transmit PADI, error=%d \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
, err
));
773 sys_timeout ( retry_wait
, pppoe_timeout
, sc
);
776 case PPPOE_STATE_PADR_SENT
:
777 sc
-> sc_padr_retried
++;
778 if ( sc
-> sc_padr_retried
>= PPPOE_DISC_MAXPADR
) {
779 MEMCPY (& sc
-> sc_dest
, ethbroadcast
. addr
, sizeof ( sc
-> sc_dest
));
780 sc
-> sc_state
= PPPOE_STATE_PADI_SENT
;
781 sc
-> sc_padr_retried
= 0 ;
782 if (( err
= pppoe_send_padi ( sc
)) != 0 ) {
783 PPPDEBUG ( LOG_DEBUG
, ( "pppoe: %c%c%" U16_F
": failed to send PADI, error=%d \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
, err
));
785 sys_timeout ( PPPOE_DISC_TIMEOUT
* ( 1 + sc
-> sc_padi_retried
), pppoe_timeout
, sc
);
788 if (( err
= pppoe_send_padr ( sc
)) != 0 ) {
789 sc
-> sc_padr_retried
--;
790 PPPDEBUG ( LOG_DEBUG
, ( "pppoe: %c%c%" U16_F
": failed to send PADR, error=%d \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
, err
));
792 sys_timeout ( PPPOE_DISC_TIMEOUT
* ( 1 + sc
-> sc_padr_retried
), pppoe_timeout
, sc
);
794 case PPPOE_STATE_CLOSING
:
795 pppoe_do_disconnect ( sc
);
798 return ; /* all done, work in peace */
802 /* Start a connection (i.e. initiate discovery phase) */
804 pppoe_connect ( struct pppoe_softc
* sc
)
808 if ( sc
-> sc_state
!= PPPOE_STATE_INITIAL
) {
813 /* wait PADI if IFF_PASSIVE */
814 if (( sc
-> sc_sppp
. pp_if
. if_flags
& IFF_PASSIVE
)) {
818 /* save state, in case we fail to send PADI */
819 sc
-> sc_state
= PPPOE_STATE_PADI_SENT
;
820 sc
-> sc_padr_retried
= 0 ;
821 err
= pppoe_send_padi ( sc
);
822 PPPDEBUG ( LOG_DEBUG
, ( "pppoe: %c%c%" U16_F
": failed to send PADI, error=%d \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
, err
));
823 sys_timeout ( PPPOE_DISC_TIMEOUT
, pppoe_timeout
, sc
);
829 pppoe_disconnect ( struct pppoe_softc
* sc
)
831 if ( sc
-> sc_state
< PPPOE_STATE_SESSION
) {
835 * Do not call pppoe_disconnect here, the upper layer state
836 * machine gets confused by this. We must return from this
837 * function and defer disconnecting to the timeout handler.
839 sc
-> sc_state
= PPPOE_STATE_CLOSING
;
840 sys_timeout ( 20 , pppoe_timeout
, sc
);
844 pppoe_do_disconnect ( struct pppoe_softc
* sc
)
848 if ( sc
-> sc_state
< PPPOE_STATE_SESSION
) {
851 PPPDEBUG ( LOG_DEBUG
, ( "pppoe: %c%c%" U16_F
": disconnecting \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
));
852 err
= pppoe_send_padt ( sc
-> sc_ethif
, sc
-> sc_session
, ( const u8_t
*)& sc
-> sc_dest
);
856 sc
-> sc_state
= PPPOE_STATE_INITIAL
;
857 MEMCPY (& sc
-> sc_dest
, ethbroadcast
. addr
, sizeof ( sc
-> sc_dest
));
858 sc
-> sc_ac_cookie_len
= 0 ;
860 if ( sc
-> sc_hunique
) {
861 mem_free ( sc
-> sc_hunique
);
862 sc
-> sc_hunique
= NULL
;
864 sc
-> sc_hunique_len
= 0 ;
868 sc
-> sc_linkStatusCB ( sc
-> sc_pd
, 0 ); /* notify upper layers */
873 /* Connection attempt aborted */
875 pppoe_abort_connect ( struct pppoe_softc
* sc
)
877 printf ( "%c%c%" U16_F
": could not establish connection \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
);
878 sc
-> sc_state
= PPPOE_STATE_CLOSING
;
880 sc
-> sc_linkStatusCB ( sc
-> sc_pd
, 0 ); /* notify upper layers */
882 /* clear connection state */
883 MEMCPY (& sc
-> sc_dest
, ethbroadcast
. addr
, sizeof ( sc
-> sc_dest
));
884 sc
-> sc_state
= PPPOE_STATE_INITIAL
;
887 /* Send a PADR packet */
889 pppoe_send_padr ( struct pppoe_softc
* sc
)
895 size_t l1
= 0 ; /* XXX: gcc */
896 #endif /* PPPOE_TODO */
898 if ( sc
-> sc_state
!= PPPOE_STATE_PADR_SENT
) {
902 len
= 2 + 2 + 2 + 2 + sizeof ( sc
); /* service name, host unique */
904 if ( sc
-> sc_service_name
!= NULL
) { /* service name tag maybe empty */
905 l1
= strlen ( sc
-> sc_service_name
);
908 #endif /* PPPOE_TODO */
909 if ( sc
-> sc_ac_cookie_len
> 0 ) {
910 len
+= 2 + 2 + sc
-> sc_ac_cookie_len
; /* AC cookie */
912 LWIP_ASSERT ( "sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff" ,
913 sizeof ( struct eth_hdr
) + PPPOE_HEADERLEN
+ len
<= 0xffff );
914 pb
= pbuf_alloc ( PBUF_LINK
, ( u16_t
)( sizeof ( struct eth_hdr
) + PPPOE_HEADERLEN
+ len
), PBUF_RAM
);
918 LWIP_ASSERT ( "pb->tot_len == pb->len" , pb
-> tot_len
== pb
-> len
);
919 p
= ( u8_t
*) pb
-> payload
+ sizeof ( struct eth_hdr
);
920 PPPOE_ADD_HEADER ( p
, PPPOE_CODE_PADR
, 0 , len
);
921 PPPOE_ADD_16 ( p
, PPPOE_TAG_SNAME
);
923 if ( sc
-> sc_service_name
!= NULL
) {
925 MEMCPY ( p
, sc
-> sc_service_name
, l1
);
928 #endif /* PPPOE_TODO */
932 if ( sc
-> sc_ac_cookie_len
> 0 ) {
933 PPPOE_ADD_16 ( p
, PPPOE_TAG_ACCOOKIE
);
934 PPPOE_ADD_16 ( p
, sc
-> sc_ac_cookie_len
);
935 MEMCPY ( p
, sc
-> sc_ac_cookie
, sc
-> sc_ac_cookie_len
);
936 p
+= sc
-> sc_ac_cookie_len
;
938 PPPOE_ADD_16 ( p
, PPPOE_TAG_HUNIQUE
);
939 PPPOE_ADD_16 ( p
, sizeof ( sc
));
940 MEMCPY ( p
, & sc
, sizeof sc
);
942 return pppoe_output ( sc
, pb
);
945 /* send a PADT packet */
947 pppoe_send_padt ( struct netif
* outgoing_if
, u_int session
, const u8_t
* dest
)
950 struct eth_hdr
* ethhdr
;
954 pb
= pbuf_alloc ( PBUF_LINK
, sizeof ( struct eth_hdr
) + PPPOE_HEADERLEN
, PBUF_RAM
);
958 LWIP_ASSERT ( "pb->tot_len == pb->len" , pb
-> tot_len
== pb
-> len
);
960 ethhdr
= ( struct eth_hdr
*) pb
-> payload
;
961 ethhdr
-> type
= PP_HTONS ( ETHTYPE_PPPOEDISC
);
962 MEMCPY ( ethhdr
-> dest
. addr
, dest
, sizeof ( ethhdr
-> dest
. addr
));
963 MEMCPY ( ethhdr
-> src
. addr
, (( struct eth_addr
*) outgoing_if
-> hwaddr
)-> addr
, sizeof ( ethhdr
-> src
. addr
));
965 p
= ( u8_t
*)( ethhdr
+ 1 );
966 PPPOE_ADD_HEADER ( p
, PPPOE_CODE_PADT
, session
, 0 );
968 res
= outgoing_if
-> linkoutput ( outgoing_if
, pb
);
977 pppoe_send_pado ( struct pppoe_softc
* sc
)
983 if ( sc
-> sc_state
!= PPPOE_STATE_PADO_SENT
) {
989 /* include ac_cookie */
990 len
+= 2 + 2 + sizeof ( sc
);
991 /* include hunique */
992 len
+= 2 + 2 + sc
-> sc_hunique_len
;
993 pb
= pbuf_alloc ( PBUF_LINK
, sizeof ( struct eth_hdr
) + PPPOE_HEADERLEN
+ len
, PBUF_RAM
);
997 LWIP_ASSERT ( "pb->tot_len == pb->len" , pb
-> tot_len
== pb
-> len
);
998 p
= ( u8_t
*) pb
-> payload
+ sizeof ( struct eth_hdr
);
999 PPPOE_ADD_HEADER ( p
, PPPOE_CODE_PADO
, 0 , len
);
1000 PPPOE_ADD_16 ( p
, PPPOE_TAG_ACCOOKIE
);
1001 PPPOE_ADD_16 ( p
, sizeof ( sc
));
1002 MEMCPY ( p
, & sc
, sizeof ( sc
));
1004 PPPOE_ADD_16 ( p
, PPPOE_TAG_HUNIQUE
);
1005 PPPOE_ADD_16 ( p
, sc
-> sc_hunique_len
);
1006 MEMCPY ( p
, sc
-> sc_hunique
, sc
-> sc_hunique_len
);
1007 return pppoe_output ( sc
, pb
);
1011 pppoe_send_pads ( struct pppoe_softc
* sc
)
1015 size_t len
, l1
= 0 ; /* XXX: gcc */
1017 if ( sc
-> sc_state
!= PPPOE_STATE_PADO_SENT
) {
1021 sc
-> sc_session
= mono_time
. tv_sec
% 0xff + 1 ;
1024 /* include hunique */
1025 len
+= 2 + 2 + 2 + 2 + sc
-> sc_hunique_len
; /* service name, host unique*/
1026 if ( sc
-> sc_service_name
!= NULL
) { /* service name tag maybe empty */
1027 l1
= strlen ( sc
-> sc_service_name
);
1030 pb
= pbuf_alloc ( PBUF_LINK
, sizeof ( struct eth_hdr
) + PPPOE_HEADERLEN
+ len
, PBUF_RAM
);
1034 LWIP_ASSERT ( "pb->tot_len == pb->len" , pb
-> tot_len
== pb
-> len
);
1035 p
= ( u8_t
*) pb
-> payload
+ sizeof ( struct eth_hdr
);
1036 PPPOE_ADD_HEADER ( p
, PPPOE_CODE_PADS
, sc
-> sc_session
, len
);
1037 PPPOE_ADD_16 ( p
, PPPOE_TAG_SNAME
);
1038 if ( sc
-> sc_service_name
!= NULL
) {
1039 PPPOE_ADD_16 ( p
, l1
);
1040 MEMCPY ( p
, sc
-> sc_service_name
, l1
);
1045 PPPOE_ADD_16 ( p
, PPPOE_TAG_HUNIQUE
);
1046 PPPOE_ADD_16 ( p
, sc
-> sc_hunique_len
);
1047 MEMCPY ( p
, sc
-> sc_hunique
, sc
-> sc_hunique_len
);
1048 return pppoe_output ( sc
, pb
);
1053 pppoe_xmit ( struct pppoe_softc
* sc
, struct pbuf
* pb
)
1058 /* are we ready to process data yet? */
1059 if ( sc
-> sc_state
< PPPOE_STATE_SESSION
) {
1060 /*sppp_flush(&sc->sc_sppp.pp_if);*/
1067 /* make room for Ethernet header - should not fail */
1068 if ( pbuf_header ( pb
, sizeof ( struct eth_hdr
) + PPPOE_HEADERLEN
) != 0 ) {
1070 PPPDEBUG ( LOG_ERR
, ( "pppoe: %c%c%" U16_F
": pppoe_xmit: could not allocate room for header \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
));
1071 LINK_STATS_INC ( link
. lenerr
);
1076 p
= ( u8_t
*) pb
-> payload
+ sizeof ( struct eth_hdr
);
1077 PPPOE_ADD_HEADER ( p
, 0 , sc
-> sc_session
, len
);
1079 return pppoe_output ( sc
, pb
);
1082 #if 0 /*def PFIL_HOOKS*/
1084 pppoe_ifattach_hook ( void * arg
, struct pbuf
** mp
, struct netif
* ifp
, int dir
)
1086 struct pppoe_softc
* sc
;
1089 if ( mp
!= ( struct pbuf
**) PFIL_IFNET_DETACH
) {
1093 LIST_FOREACH ( sc
, & pppoe_softc_list
, sc_list
) {
1094 if ( sc
-> sc_ethif
!= ifp
) {
1097 if ( sc
-> sc_sppp
. pp_if
. if_flags
& IFF_UP
) {
1098 sc
-> sc_sppp
. pp_if
. if_flags
&= ~( IFF_UP
| IFF_RUNNING
);
1099 printf ( "%c%c%" U16_F
": ethernet interface detached, going down \n " ,
1100 sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
);
1102 sc
-> sc_ethif
= NULL
;
1103 pppoe_clear_softc ( sc
, "ethernet interface detached" );
1111 pppoe_clear_softc ( struct pppoe_softc
* sc
, const char * message
)
1113 LWIP_UNUSED_ARG ( message
);
1116 sys_untimeout ( pppoe_timeout
, sc
);
1117 PPPDEBUG ( LOG_DEBUG
, ( "pppoe: %c%c%" U16_F
": session 0x%x terminated, %s \n " , sc
-> sc_ethif
-> name
[ 0 ], sc
-> sc_ethif
-> name
[ 1 ], sc
-> sc_ethif
-> num
, sc
-> sc_session
, message
));
1120 sc
-> sc_state
= PPPOE_STATE_INITIAL
;
1122 /* notify upper layers */
1123 sc
-> sc_linkStatusCB ( sc
-> sc_pd
, 0 );
1125 /* clean up softc */
1126 MEMCPY (& sc
-> sc_dest
, ethbroadcast
. addr
, sizeof ( sc
-> sc_dest
));
1127 sc
-> sc_ac_cookie_len
= 0 ;
1131 #endif /* PPPOE_SUPPORT */