Re: [tcpdump-workers] Request for DLT_ number assignment

2007-12-22 Thread Alexey Neyman
Guy, Thanks! Yes, I noted the DLT_IPMB value. However, our captures also contain message flags (as passed by the driver), and driver events - which DLT_IPMB format doesn't allow for. Best regards, Alexey. On 22 December 2007 Guy Harris wrote: > Alexey Neyman wrote: > > Okay,

Re: [tcpdump-workers] Request for DLT_ number assignment

2007-12-22 Thread Alexey Neyman
Guy, > Well, that would have the advantage that files are self-identifying. > If the file is only ever read once, that's just a question of whether > to indicate the file type when you do the capture or when you read > the file; however, if it's read more than once, with a link-layer > type that

Re: [tcpdump-workers] Request for DLT_ number assignment

2007-12-22 Thread Alexey Neyman
Guy, > So if it were to be used for other I2C-based buses, would the > expectation be that you'd have to configure the application reading > the file to indicate what protocol is being used? Yes, in the Wireshark changes that we'll submit it is possible to select the protocol being used on I2C b

Re: [tcpdump-workers] Request for DLT_ number assignment

2007-12-22 Thread Alexey Neyman
Guy, > So would this be usable for any other I2C-based buses? If not, > perhaps the name should include IPMB. If so, does the pseudo-header > indicate what type of traffic it is? It can be used for any other I2C-based bus, though we only use it to capture IPMB traffic. The capture utility is a

Re: [tcpdump-workers] Request for DLT_ number assignment

2007-12-21 Thread Alexey Neyman
Guy, Is this request being processed/queued? Best regards, Alexey. On 29 November 2007 Alexey Neyman wrote: > Guy, > > On 29 November 2007 Guy Harris wrote: > > > The format of the capture is a 5-byte pseudo header followed by > > > the actual I2C data. The MS bit o

Re: [tcpdump-workers] Request for DLT_ number assignment

2007-11-29 Thread Alexey Neyman
Guy, On 29 November 2007 Guy Harris wrote: > > The format of the capture is a 5-byte pseudo header followed by the > > actual I2C data. The MS bit of 1st byte of pseudo-header indicates > > whether the packet contains data or is an event detected on the I2C > > controller. The remaining 7 bits con

[tcpdump-workers] Request for DLT_ number assignment

2007-11-29 Thread Alexey Neyman
Hi, We have an utility that allows capturing the I2C traffic over the IPMB bus; that utility generates capture files in libpcap format for later use with WireShark for analysis. We would like to have a link type number assigned for such captures. We are going to submit the necessary changes f