usbmon status && extended urb information for binary API

hello,

I spend a few time in the last days using latest usbmon patch (with bus
0 interface). So far I did not notice any issue. My knowledge of the
module removal process is far from complete, so I can't perform any
formal correctness test for rmmod. 

I used a linux-2.6.21-rc4 tree with the mon_extended_text_api,
mon_device_0 and mon_bus0 patches (your version, taken from the ML). The
mon_device_0 and mon_bus0 apply with fuzz. 

I was wondering about making available the text extended information
through the binary interface, without breaking current API. Some
helper/dummy events could be generated for each isochronous transfer URB
with number_of_packets > 0, one for each packet used by the transfer.
This events have event type 'P' (isochronous packet) and id, xfer_type,
epnum, devnum, busnum equal to the 'main' event field. 

The per frame information (offset, length, actual_length, status) could
be encoded into the 'P' events:

* Reusing some usbmon header fields (could be the setup field possibly
used ?!?) and giving them different semantic for 'P' events

or:

* Adding a 'dummy' payload with such information.

For other urb fields used in isochronous transfer:
* the number_of_packet is implied by the number of 'P' events
generated. 
* the start_frame could encoded in the 'status' field of the 'main'
event (given that such field does not report the URB status in the usual
way for isochronous transfer) or into each 'P' event, like the per frame
information.

Ok this is a bit complex :-). Anyway please let me know any suggestion.

thanks,

Paolo


 
 
 --
 Email.it, the professional e-mail, gratis per te: http://www.email.it/f
 
 Sponsor:
 Tutto per il Modding PC: Case, Led, Neon, Ventole. Il tuo PC personalizzato da noi conviene, visita il nostro sito
 Clicca qui: http://adv.email.it/cgi-bin/foclick.cgi?mid=6123&d=27-3

-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
[email protected]
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel