Testlayer1

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  • source code: mISDNuser/example/testlayer1.c
  • testlayer1 is able to test layer1 implementations without using any upper layers (layer2/layer3)
  • it opens a connection to layer1 in NT mode
  • it assumes that every frame send down to S0 bus is looped back immediatly and can be received by the RX fifos
    • this can be achieved by plugging an Cross connector to the devices' S0 port
  • this way a full D- and all B-Channel fifo test with adjustable packet sizes can be performed
  • testlayer1 offers HDLC and TRANSPARENT data loop tests


  • cmd line params 
 --card=<n>         use card number n (default 0)
 --d                enable D channel stream with <n> packet sz
 --b1, --b1=<n>     enable B channel stream with <n> packet sz
 --b2, --b2=<n>     enable B channel stream with <n> packet sz
 --te               use TA in TE mode (default is NT)
 --playload=<x>     hdlc package payload types:
                           0: always 0x00
                           1: incremental playload (default)
                        0xFF: always 0xFF
 --btrans           use bchannels in transparant mode
 --stop=<n>         stop testlayer1 after <n> seconds
 --sleep=<n>        tweak usleep() duration in mail data loop
 -v, --verbose=<n>  set debug verbose level
 --help             Usage ; printout this information


  • console output with optimal HDLC data throughput (meaning test layer1 passed): 
./testlayer1 --d --b1 --b2 --payload=0

testlayer1 - card(0) debug(0) playload(0) btrans(0)
chan B1 stream enabled with packet sz 1800 bytes
chan B2 stream enabled with packet sz 1800 bytes
chan D  stream enabled with packet sz 64 bytes
--> D  -  PH_ACTIVATE_REQ
<-- D  -  PH_ACTIVATE_IND
--> B1 -  PH_ACTIVATE_REQ
<-- B1 -  PH_ACTIVATE_IND
--> B2 -  PH_ACTIVATE_REQ
<-- B2 -  PH_ACTIVATE_IND

waiting for data (use CTRL-C to cancel) stop(0) sleep(200)...
B1 rate/s: 7271, rate-avg: 6914.581, rx total: 7271 kb since 1 secs, pkt(rx/tx): 4/6, rx-err:0,0
B2 rate/s: 7352, rate-avg: 6991.677, rx total: 7352 kb since 1 secs, pkt(rx/tx): 4/6, rx-err:0,0
D  rate/s: 312, rate-avg: 296.712,   rx total: 312 kb  since 1 secs, pkt(rx/tx): 6/3, rx-err:0,0

-- snip snip --

B1 rate/s: 7216, rate-avg: 7948.753, rx total: 167827 kb since 21 secs, pkt(rx/tx): 93/95,   rx-err:0,0
B2 rate/s: 7216, rate-avg: 7952.593, rx total: 167908 kb since 21 secs, pkt(rx/tx): 93/95,   rx-err:0,0
D  rate/s: 1972, rate-avg: 1908.532, rx total: 40296 kb  since 21 secs, pkt(rx/tx): 594/595, rx-err:0,0

B1 rate/s: 7216, rate-avg: 7914.239, rx total: 175043 kb since 22 secs, pkt(rx/tx): 97/100,  rx-err:0,0
B2 rate/s: 7216, rate-avg: 7917.905, rx total: 175124 kb since 22 secs, pkt(rx/tx): 97/100,  rx-err:0,0
D  rate/s: 2040, rate-avg: 1914.144, rx total: 42336 kb  since 22 secs, pkt(rx/tx): 624/624, rx-err:0,0

-- ctrl-c --

exiting...
closing socket 'B1'
closing socket 'B2'
closing socket 'D '


  • rate/s: data rate of last second
  • rate-avg: rate average per second since start
  • rx total: total kbytes received
  • pkt(rx/tx): number of packets (PH_DATA_REQ skbs) received and transmitted since start
  • rx-err: number of erroneously received frames
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