On Fri, Aug 6, 2010 at 3:04 PM, Jon Smirl <[email protected]> wrote: > On Fri, Aug 6, 2010 at 2:51 PM, Guy Harris <[email protected]> wrote: >> >> On Aug 6, 2010, at 11:47 AM, Jon Smirl wrote: >> >>> Can I request a DLT for IEEE802.15.4 no FCS frames. >>> >>> The ARPHRD for these frames is already in the Linux kernel: >>> #define ARPHRD_IEEE802154 804 >> >> So that's with a standard 802.15.4 header (as opposed to, say, headers with >> addresses padded to the maximum length), and no FCS?- > > This one is the full packet with FCS as a radio sees it > #define DLT_IEEE802_15_4 195
This one probably should have been a radio tap type interface and included channel number. But it is too late now. > > Not all radios provide access to the FCS internally so it is stripped > in the Linux implementation. That's the only difference from the first > one. so we need another DLT.... > #define DLT_IEEE_802154 230 > > I'm not sure what this one is, he never submitted any code to the kernel. > * IEEE 802.15.4, with address fields padded, as is done by Linux > * drivers; requested by Juergen Schimmer. > */ > #define DLT_IEEE802_15_4_LINUX 191 > > >> This is the tcpdump-workers list. >> Visit https://cod.sandelman.ca/ to unsubscribe. >> > > > > -- > Jon Smirl > [email protected] > -- Jon Smirl [email protected] - This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
