[lwip-users] PPP, GPRS connection problem

[Fodor Peter]

Hi

I plan to use lwIP to transmit GPS coordinates through GPRS on ARM architecture.
I haven't found any gprs examples so I worte my mine for PC, but it
doesn't work.
I don't get answer to IPCP, Configure-Request messages.

IPCP: timeout resending Config-Request state=6 (LS_REQSENT)

After the timeout it resends 10 times and gives up.

Here is my source code based on contrib 1.3.0:
http://www.freeweb.hu/fodpeter/lwip/ppp_test.tar.gz
I use an USB Wavecom modem and kubuntu 7.10.

Perhaps you could try it or see the code, if i did just a dummy mistake.
Or maybe somebody has a working example, that would be great too :)

Thanks
Peter Fodor

ps: Here is my log (or here http://www.freeweb.hu/fodpeter/lwip/log.txt ) :

> tcp init done
lcp_init: xmit_accm=0 0 0 0
Expecting: OK
Expecting: CONNECT 115200
lcp_init: xmit_accm=0 0 0 0
pbuf_alloc(length=1504)
pbuf_alloc(length=1504) == 0x806ef90
pppMain: unit 0: Connecting
sio_read 4 bytes: 7E FF 7D 23
pppInProc[0]: got 4 bytes
pppStartCB: unit 0
ppp_set_xaccm[0]: outACCM=0 0 0 0
ppp_send_config[0]: outACCM=FF FF FF FF
ppp_recv_config[0]: inACCM=0 0 0 0
lcp_lowerup: asyncmap=0 0 0 0
LCP: lowerup state 0 (LS_INITIAL) -> 2 (LS_CLOSED)
auth_reset: 0
lcp_addci: L opt=2 0
lcp_addci: L opt=5 70A012B6
lcp_addci: opt=7
lcp_addci: opt=8
pbuf_alloc(length=0)
pbuf_alloc: allocated pbuf 0x807586c
pbuf_alloc(length=0) == 0x807586c
pppWrite[0]: len=46
sio_write 46 bytes: 7E FF 7D 23 C0 21 7D 21  7D 21 7D 20 7D 34 7D 22
7D 26 7D 20 7D 20 7D 20  7D 20 7D 25 7D 26 70 A0  7D 32 B6 7D 27 7D 22
7D  28 7D 22 32 53 7E
pbuf_free(0x807586c)
pbuf_free: deallocating 0x807586c
fsm_sdata(LCP): Sent code 1,1,20.
LCP: sending Configure-Request, id 1
LCP: open state 2 (LS_CLOSED) -> 6 (LS_REQSENT)
> waiting for ppp...
sio_read 46 bytes: C0 21 7D 21 7D 21 7D 20  7D 36 7D 21 7D 24 7D 25
DC 7D 22 7D 26 7D 20 7D  20 7D 20 7D 20 7D 27 7D  22 7D 28 7D 22 7D 23
7D  24 C0 23 26 B4 7E
pppInProc[0]: got 46 bytes
pbuf_alloc(length=0)
pbuf_alloc: allocated pbuf 0x807586c
pbuf_alloc(length=0) == 0x807586c
pppInput[0]: LCP len=22
fsm_input(LCP):1,1,22
fsm_rconfreq(LCP): Rcvd id 1 state=6 (LS_REQSENT)
lcp_reqci: rcvd MRU 1500 ASYNCMAP=0 PCOMPRESSION ACCOMPRESSION PAP (C023)
lcp_reqci: returning CONFACK.
pbuf_alloc(length=0)
pbuf_alloc: allocated pbuf 0x80757dc
pbuf_alloc(length=0) == 0x80757dc
pppWrite[0]: len=49
sio_write 49 bytes: FF 7D 23 C0 21 7D 22 7D  21 7D 20 7D 36 7D 21 7D
24 7D 25 DC 7D 22 7D 26  7D 20 7D 20 7D 20 7D 20  7D 27 7D 22 7D 28 7D
22  7D 23 7D 24 C0 23 D0 47  7E
pbuf_free(0x80757dc)
pbuf_free: deallocating 0x80757dc
fsm_sdata(LCP): Sent code 2,1,22.
pbuf_free(0x807586c)
pbuf_free: deallocating 0x807586c
sio_read 1 bytes: 7E
pppInProc[0]: got 1 bytes
sio_read 25 bytes: FF 7D 23 C0 21 7D 24 7D  21 7D 20 7D 2A 7D 25 7D
26 70 A0 7D 32 B6 3C D8  7E
pppInProc[0]: got 25 bytes
pbuf_alloc(length=0)
pbuf_alloc: allocated pbuf 0x807586c
pbuf_alloc(length=0) == 0x807586c
pppInput[0]: LCP len=10
fsm_input(LCP):4,1,10
fsm_rconfnakrej(LCP): Rcvd id 1 state=8 (LS_ACKSENT)
lcp_rejci: long opt 5 rejected
lcp_addci: L opt=2 0
lcp_addci: opt=7
lcp_addci: opt=8
pbuf_alloc(length=0)
pbuf_alloc: allocated pbuf 0x80757dc
pbuf_alloc(length=0) == 0x80757dc
pppWrite[0]: len=36
sio_write 36 bytes: FF 7D 23 C0 21 7D 21 7D  22 7D 20 7D 2E 7D 22 7D
26 7D 20 7D 20 7D 20 7D  20 7D 27 7D 22 7D 28 7D  22 87 3A 7E
pbuf_free(0x80757dc)
pbuf_free: deallocating 0x80757dc
fsm_sdata(LCP): Sent code 1,2,14.
LCP: sending Configure-Request, id 2
pbuf_free(0x807586c)
pbuf_free: deallocating 0x807586c
sio_read 37 bytes: 7E FF 7D 23 C0 21 7D 22  7D 22 7D 20 7D 2E 7D 22
7D 26 7D 20 7D 20 7D 20  7D 20 7D 27 7D 22 7D 28  7D 22 B9 B9 7E
pppInProc[0]: got 37 bytes
pbuf_alloc(length=0)
pbuf_alloc: allocated pbuf 0x807586c
pbuf_alloc(length=0) == 0x807586c
pppInput[0]: LCP len=14
fsm_input(LCP):2,2,14
fsm_rconfack(LCP): Rcvd id 2 state=8 (LS_ACKSENT)
lcp_acki: Ack
ppp_send_config[0]: outACCM=0 0 0 0
ppp_recv_config[0]: inACCM=0 0 0 0
link_established: 0
IPCP: lowerup state 0 (LS_INITIAL) -> 2 (LS_CLOSED)
pbuf_alloc(length=0)
pbuf_alloc: allocated pbuf 0x80757dc
pbuf_alloc(length=0) == 0x80757dc
pppWrite[0]: len=29
sio_write 29 bytes: FF 03 80 21 01 01 00 16  03 06 00 00 00 00 81 06
00 00 00 00 83 06 00 00  00 00 6E DB 7E
pbuf_free(0x80757dc)
pbuf_free: deallocating 0x80757dc
fsm_sdata(IPCP): Sent code 1,1,22.
IPCP: sending Configure-Request, id 1
IPCP: open state 2 (LS_CLOSED) -> 6 (LS_REQSENT)
pbuf_free(0x807586c)
pbuf_free: deallocating 0x807586c
IPCP: timeout resending Config-Request state=6 (LS_REQSENT)   <---- main problem

...

IPCP: timeout sending Config-Requests state=6 (LS_REQSENT)
np_finished: 0 proto=21
link_down: 0
IPCP: lowerdown state 3 (LS_STOPPED) -> 1 (LS_STARTING)
IPCP: close reason=LCP down state 1 (LS_STARTING) -> 0 (LS_INITIAL)
pppLinkDown: unit 0
pppMainWakeup: unit 0
sio_read_abort: not yet implemented for unix
ppp_send_config[0]: outACCM=FF FF FF FF
ppp_recv_config[0]: inACCM=0 0 0 0
pbuf_alloc(length=0)
pbuf_alloc: allocated pbuf 0x807586c
pbuf_alloc(length=0) == 0x807586c
pppWrite[0]: len=43
sio_write 43 bytes: FF 7D 23 C0 21 7D 25 7D  23 7D 20 20 4E 6F 20 6E
65 74 77 6F 72 6B 20 70  72 6F 74 6F 63 6F 6C 73  20 72 75 6E 6E 69 6E
67  23 DD 7E
pbuf_free(0x807586c)
pbuf_free: deallocating 0x807586c
fsm_sdata(LCP): Sent code 5,3,32.
LCP: close reason=No network protocols running state 9 (LS_OPENED) ->
4 (LS_CLOSING)
sio_read 8 bytes: 7E FF 7D 23 C0 21 7D 26
pppInProc[0]: got 8 bytes
pbuf_alloc(length=0)
pbuf_alloc: allocated pbuf 0x807586c
pbuf_alloc(length=0) == 0x807586c
sio_read 36 bytes: 7D 23 7D 20 20 4E 6F 20  6E 65 74 77 6F 72 6B 20
70 72 6F 74 6F 63 6F 6C  73 20 72 75 6E 6E 69 6E  67 85 44 7E
pppInProc[0]: got 36 bytes
pppInput[0]: LCP len=32
fsm_input(LCP):6,3,32
fsm_rtermack(LCP): state=4 (LS_CLOSING)
link_terminated: 0
Connection terminated.
pppLinkTerminated: unit 0
pppMainWakeup: unit 0
sio_read_abort: not yet implemented for unix
pbuf_free(0x807586c)
pbuf_free: deallocating 0x807586c
sio_read 6 bytes: 0D 0A 4E 4F 20 43
pppInProc[0]: got 6 bytes
pbuf_alloc(length=0)
pbuf_alloc: allocated pbuf 0x807586c
pbuf_alloc(length=0) == 0x807586c
pppMain: unit 0: PHASE_DEAD
pppDrop: pbuf len=13
pbuf_free(0x807586c)
pbuf_free: deallocating 0x807586c
pbuf_free(0x806ef90)
pbuf_free: deallocating 0x806ef90
pppMain: unit 0: linkStatusCB=8048fa4 errCode=0
> ppp init done, errcode= -8
> exit.