Re: Connecting P1i to FreeBSD

Ivan Voras Sun, 27 Apr 2008 16:22:49 -0700

Sepherosa Ziehau wrote:

 I think you are using iwi to do the tap, could you put iwi into
 monitor mode, since iwi is "smart" device which may filter certain
 type of frames in non-monitor mode?

Do you still need these tests since you did your own with the rum device? Apparently my iwi device causes kernel panic when switching modes or some related activity, so it's difficult to work with.

 I tested my rum: the beacon template set in the hardware is trashed in
 a strange a pattern

BTW, the pattern is anything beyond 64bytes will be wrapped.  See the
dump and the beacon content.


Yes, I see what you mean...

 What I got in the air; fc duration and certain part of mac address is trashed:
 11:04:57.256700 Assoc Request (sephe-adhoc) [1.0* 2.0* 5.5* 11.0* 6.0

9.0 12.0 18.0 Mbit]
        0x0000:  0000 2a01 0032 0430 4860 6c18 f32f 077a
        0x0010:  4e9c 3b6a eb9f b01d afbe e402 0000 0000
        0x0020:  6400 2200 000b 7365 7068 652d 6164 686f
        0x0030:  6301 0882 848b 960c 1218 2403 0101 0602
        0x0040:  9056 e96b 88d0 f6ef 5cc9 1d

 The actual beacon mbuf content:
 80 00 00 00 ff ff ff ff ff ff 00 18 f3 2f 07 7a
 4e 9c 3b 6a eb 9f 00 00 00 00 00 00 00 00 00 00
 64 00 22 00 00 0b 73 65 70 68 65 2d 61 64 68 6f
 63 01 08 82 84 8b 96 0c 12 18 24 03 01 01 06 02
 00 00 2a 01 00 32 04 30 48 60 6c

 After several small code change, I found that beacon template size
 can't exceeds 64bytes.  Small template space means you could only use
 rum IBSS in 11b mode.  I have tried to setup BEACON_BASE1 but without

I tried, and I can't run rum in IBSS in 11b (at least the device in question ignores it as always). Can you?

 result.  If it is not a hardware design flaw then we will need data
 sheet to make it correct.

I don't think it's a hardware fault since it "just works" in Windows without any special configuration.

Btw. what hardware revision is your rum device? Mine is C1 (found on the label before the firmware version).

I don't know about data sheets, but the Linux driver (rum-equivalent) is available from the chips' vendor: http://www.ralinktech.com/ralink/Home/Support/Linux.html

It should be the one for RT2500USB.

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Re: Connecting P1i to FreeBSD

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