2009-05-16 21:17:14 Cache problem with tun-device
Patrick Hotz (GERMANY)
Message: 74136
Hi,
i have a problem using the virtual TUN/TAP device and a software which is using cache.
But fist to my system:
uClinux2008R1 (TUN/TAP-Device Vers. 1.6)
special software for VoIP which is using much of cach for better performance
modified bfin_mac.c driver for Network without IP-Chacksum located in Cach
My problem is following:
If i run openVPN without the other program everything works ok,
but if i start the software and afterwards the openVPN which is using the TAP device i get a kernel panic (i will append the log tomorrow because i´m not in office)
I think it is a problem with the cach.
Is it possible to modifi the tun.c to get running without any access into Cach?
Thank you very much.
Patrick
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2009-05-16 21:20:20 Re: Cache problem with tun-device
Mike Frysinger (UNITED STATES)
Message: 74137
sorry, but what cache exactly are you talking about ? the Blackfin L1 cache ?
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2009-05-16 21:23:40 Re: Cache problem with tun-device
Patrick Hotz (GERMANY)
Message: 74138
Hello Mike,
yes, i talk about the L1
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2009-05-16 21:42:55 Re: Cache problem with tun-device
Mike Frysinger (UNITED STATES)
Message: 74139
there is no way to selectively control what goes into L1 cache
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2009-05-17 02:51:04 Re: Cache problem with tun-device
Frank Van Hooft (CANADA)
Message: 74142
Are you talking about L1 memory? Are you getting a panic because your application is requesting more L1 memory than is available?