64b85006f5
The sysfs attributes for exposing cxacru statistics/status information with possible values is now explained in Documentation/networking/cxacru.txt including information on the writable adsl_state attribute's commands and a sample of the kernel log format. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Cc: Duncan Sands <duncan.sands@math.u-psud.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
84 lines
2.3 KiB
Text
84 lines
2.3 KiB
Text
Firmware is required for this device: http://accessrunner.sourceforge.net/
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While it is capable of managing/maintaining the ADSL connection without the
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module loaded, the device will sometimes stop responding after unloading the
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driver and it is necessary to unplug/remove power to the device to fix this.
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Detected devices will appear as ATM devices named "cxacru". In /sys/class/atm/
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these are directories named cxacruN where N is the device number. A symlink
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named device points to the USB interface device's directory which contains
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several sysfs attribute files for retrieving device statistics:
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* adsl_controller_version
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* adsl_headend
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* adsl_headend_environment
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Information about the remote headend.
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* downstream_attenuation (dB)
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* downstream_bits_per_frame
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* downstream_rate (kbps)
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* downstream_snr_margin (dB)
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Downstream stats.
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* upstream_attenuation (dB)
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* upstream_bits_per_frame
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* upstream_rate (kbps)
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* upstream_snr_margin (dB)
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* transmitter_power (dBm/Hz)
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Upstream stats.
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* downstream_crc_errors
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* downstream_fec_errors
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* downstream_hec_errors
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* upstream_crc_errors
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* upstream_fec_errors
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* upstream_hec_errors
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Error counts.
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* line_startable
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Indicates that ADSL support on the device
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is/can be enabled, see adsl_start.
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* line_status
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"initialising"
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"down"
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"attempting to activate"
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"training"
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"channel analysis"
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"exchange"
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"waiting"
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"up"
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Changes between "down" and "attempting to activate"
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if there is no signal.
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* link_status
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"not connected"
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"connected"
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"lost"
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* mac_address
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* modulation
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"ANSI T1.413"
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"ITU-T G.992.1 (G.DMT)"
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"ITU-T G.992.2 (G.LITE)"
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* startup_attempts
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Count of total attempts to initialise ADSL.
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To enable/disable ADSL, the following can be written to the adsl_state file:
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"start"
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"stop
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"restart" (stops, waits 1.5s, then starts)
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"poll" (used to resume status polling if it was disabled due to failure)
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Changes in adsl/line state are reported via kernel log messages:
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[4942145.150704] ATM dev 0: ADSL state: running
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[4942243.663766] ATM dev 0: ADSL line: down
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[4942249.665075] ATM dev 0: ADSL line: attempting to activate
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[4942253.654954] ATM dev 0: ADSL line: training
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[4942255.666387] ATM dev 0: ADSL line: channel analysis
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[4942259.656262] ATM dev 0: ADSL line: exchange
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[2635357.696901] ATM dev 0: ADSL line: up (8128 kb/s down | 832 kb/s up)
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