Dectmon only recording data partially?

Patrick McHardy kaber at trash.net
Mon Nov 15 15:19:44 UTC 2010


On 15.11.2010 16:14, Erik Tews wrote:
> Am Montag, den 15.11.2010, 15:44 +0100 schrieb Patrick McHardy:
>> You could try to add to dect_mac_irc_tick, the
>> DECT_TRANSCEIVER_UNLOCKED
>> case, around the carrier increment:
>>
>> if (net_random() > 0x7fffffff) {
>> ...
>> }
>>
>> to have it stay on the same carrier half the time. 
> 
> OK, that seems to improve the scanning results:
> 
> diff --git a/net/dect/mac_csf.c b/net/dect/mac_csf.c
> index a77f19f..9ec7a75 100644
> --- a/net/dect/mac_csf.c
> +++ b/net/dect/mac_csf.c
> @@ -3656,9 +3656,11 @@ void dect_mac_irc_tick(struct dect_transceiver *trx)
>  
>         switch (trx->state) {
>         case DECT_TRANSCEIVER_UNLOCKED:
> -               /* maintain scan until clock is running */
> -               irc->rx_scn = dect_next_carrier(0x3ff, irc->rx_scn);
> -               dect_set_carrier(trx, DECT_SCAN_SLOT, irc->rx_scn);
> +               if (net_random() > 0x7fffffff) {
> +                       /* maintain scan until clock is running */
> +                       irc->rx_scn = dect_next_carrier(0x3ff, irc->rx_scn);
> +                       dect_set_carrier(trx, DECT_SCAN_SLOT, irc->rx_scn);
> +               }
>                 break;
>         case DECT_TRANSCEIVER_LOCK_PENDING:
>                 irc->si.ssi.pscn = dect_next_carrier(0x3ff, irc->si.ssi.pscn);
> 
> 
> However, I don't get a lock just in PP mode, if I don't use the monitor
> flag:
> 
> [607158.216667] com_on_air_pci 0000:02:04.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
> [607158.216679] com_on_air_pci 0000:02:04.0: setting latency timer to 64
> [607158.241899] com_on_air_pci 0000:02:04.0: Loading firmware ...
> [607158.788708] identities information: e: 0 class: 0 emc: 11d3 fpn: 0f371 rpn: 0
> [607192.974449] identities information: e: 0 class: 0 emc: 11d3 fpn: 0f371 rpn: 0
> [607219.881092] identities information: e: 0 class: 0 emc: 11d3 fpn: 0f371 rpn: 0
> [607232.329542] identities information: e: 0 class: 0 emc: 11d3 fpn: 0f371 rpn: 0
> [607263.615645] identities information: e: 0 class: 0 emc: 11d3 fpn: 0f371 rpn: 0
> [607283.483168] identities information: e: 0 class: 0 emc: 11d3 fpn: 0f371 rpn: 0
> [607287.032726] identities information: e: 0 class: 0 emc: 11d3 fpn: 0f371 rpn: 0
> [607298.211337] identities information: e: 0 class: 0 emc: 11d3 fpn: 0f371 rpn: 0
> [607307.220212] identities information: e: 0 class: 0 emc: 11d3 fpn: 0f371 rpn: 0
> [607370.522330] identities information: e: 0 class: 0 emc: 11d3 fpn: 0f371 rpn: 0

The timings indicate that it only receives very few frames from the
FP. Is it possible that it's operating in ECO-mode?




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