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From: Erno Kuusela (erno.kuuselaoulu.fi)
Date: Tue Jan 15 2002 - 05:22:38 CST

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    hello,

    i want to see the signal quality metrics for a few other devices/access
    points. i understand i have to use ad-hoc mode in order to do that.

    however, here's what happens:

    sh-2.03# iwconfig
    lo no wireless extensions.

    Warning : Device eth0 has been compiled with version 11
    of Wireless Extension, while we are using version 12.
    Some things may be broken...

    eth0 IEEE 802.11-DS ESSID:"Monica" Nickname:"familiar"
              Mode:Ad-Hoc Frequency:2.412GHz Cell: 00:60:1D:F1:20:CF
              Bit Rate:5.5Mb/s Tx-Power=15 dBm Sensitivity:1/3
              Retry limit:4 RTS thr:off Fragment thr:off
              Encryption key:off
              Power Management:off
              Link Quality:0 Signal level:0 Noise level:0
              Rx invalid nwid:0 invalid crypt:0 invalid misc:0

    sh-2.03# iwspy eth0 + 00:60:1D:F1:20:CF
    sh-2.03# cat /proc/net/wireless
    Inter-| sta-| Quality | Discarded packets
     face | tus | link level noise | nwid crypt misc
      eth0: 0000 0 0 0 0 0 0
    sh-2.03#

    also if i use managed mode, i get metrics, but they don't seem to change (?)
    when i move around the office and hallways.
    i get:
               Link Quality:159/92 Signal level:7/153 Noise level:0/153

    the link quality value fluctuates sometimes changes a bit
    between 158 and 160, but doesn't seem to correlate with moving
    around (even if i go out of range so ping doesn't get through anymore.)

    (i noticed the 11 vs 12 version discrepancy that iwconfig reports,
    but by looking at the driver source this doesn't seem like
    it would affect the iwconfig readings. also /proc/net/wireless reports
    the same numbers.)

    i am doing this on a ipaq. familiar 0.5 prerelease, kernel
    2.4.7-rmk3-np1-devfs, orinoco_cs version 0.07.

    any ideas greatly appreciated.

    please cc me as i'm not subscribed to the list. (i read the archives
    though)

       -- erno