404a67d089
* Drop PCM during sluggish events:
- Drop both rx/tx (was only tx)
- Drop almost all pcm until sluggishness stops (used to drop only
single pcm each time).
- Renamed: "drop_next_pcm" -> "drop_pcm" (to match new semantics)
- Still allow "keep alive" PCM so Astribank will not reset FXS high-voltage.
The "sluggish_pcm_keepalive" parameter set the rate (1/50 by default)
- Added rx/tx drop statistics counters
- Removed "pcm_tx_drops" (replaced by new statistics counters)
* Also improved format of /proc/xpp/XBUS-*/xpp_usb:
- Show cummulative number of sluggish events.
- Clearly show range (in usec) of usb_tx_delay[]
Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
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