tcpdump mailing list archives
Re: DLT_ reserve request for IPMI trace captures
From: Dmitry <d-bazhenov () yandex ru>
Date: Mon, 09 Jun 2014 11:22:16 +0600
Hello, Guy, Please, see below 08.06.2014 2:17, Guy Harris пишет:
OK, so all we would need to say on http://www.tcpdump.org/linktypes.html would be: LINKTYPE_whatever {number} DLT_whatever Trace data blocks, as specified by Table 3-20 "Trace Data Block Format" in the PICMG HPM.2 specification with "PICMG HPM.2 specification" linking to http://www.picmg.org/v2internal/specifications2.cfm?thetype=One&thebusid=12 (that being the closest thing we can provide to a link to the spec)?
Correct.
And a trace data block begins with 0 1 Trace Data Block Type [7:6] Reserved [5:4] Packet Type 0 – IPMI Trace Packet Data. 1 - Channel State Change Notification. 2 - Embedded ASCII message. 3 - Reserved. [3:0] – IPMI Channel Number being traced. and the HPM.2 spec describes the format of IPMI Trace Packet Data (either directly or by referring to IPMI specs), the format of Channel State Change Notifications, and the format of embedded ASCII messages? Correct?
Correct.
They would not be significant, if Wireshark did not use them for displaying packet times. But, since Wireshark does use them, then for the sake of usability they are in fact significant and should match the time stamps in the captured trace data blocks.Also, are the time stamps in pcap records or pcap-ng packet blocks significant, given that the trace blocks contain their own time stamps?
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Current thread:
- Re: DLT_ reserve request for IPMI trace captures Dmitry (May 08)
- Re: DLT_ reserve request for IPMI trace captures Guy Harris (May 08)
- Re: DLT_ reserve request for IPMI trace captures Dmitry (May 09)
- Re: DLT_ reserve request for IPMI trace captures Dmitry (May 16)
- Re: DLT_ reserve request for IPMI trace captures Guy Harris (May 16)
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- Re: DLT_ reserve request for IPMI trace captures Rich Vasse (Jun 06)
- Re: DLT_ reserve request for IPMI trace captures Dmitry (May 09)
- Re: DLT_ reserve request for IPMI trace captures Guy Harris (May 08)
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- Re: DLT_ reserve request for IPMI trace captures Guy Harris (Jun 07)
- Re: DLT_ reserve request for IPMI trace captures Dmitry (Jun 08)
- Re: DLT_ reserve request for IPMI trace captures Guy Harris (Jun 09)
- Re: DLT_ reserve request for IPMI trace captures Dmitry (Jun 09)