Re: Request for DLT_ number assignment

[Alexey Neyman <avn () emcraft com>]

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 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 contain the
> > > minor number of the I2C device that generated the packet. The
> > > next 4 bytes contain either message flags, or controller status
> > > bits, as defined in <linux/i2c.h> and <linux/i2c-dev.h> headers.
> >
> > So are those 4 bytes Linux-specific, or are they likely to be used
> > if a different OS were to support capturing on IPMB?  If they're
> > Linux-specific, DLT_I2C_LINUX might be a better name.
>
> They bit values are not specific themselves (e.g. status bits
> include "Controller lost attachment to bus", "Controller had
> promiscuous mode set/cleared", etc) - most likely, these bits will be
> available on different OS, too. However, the definitions of these
> status bits match those in Linux.
>
> DLT_I2C_LINUX is perfectly fine, too.
>
> Best regards,
> Alexey.
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