tcpdump mailing list archives
Re: Request for new Link-layer header type
From: <HPfrommer () hilscher com>
Date: Wed, 31 Aug 2011 13:03:48 +0200
Unfortunately there is no document online, but the structure is quite simple, it's just a 32-bit value containing some bit fields: typedef struct { uint32_t uiErrorCode : 8; uint32_t uiGpio : 1; uint32_t uiTransparent : 1; uint32_t uiHeaVersion : 4; uint32_t uiPort : 2; uint32_t uiLength : 12; uint32_t uiReserved : 4; } NETANA_HEADER_BIT_T; typedef union { uint32_t val; NETANA_HEADER_BIT_T bf; } NETANA_HEADER_T; uiErrorCode is a bit-field containing following bits: 0: MII RX_ER present 1: Alignment error present 2: FCS error present 3: Frame too long 4: SFD error present 5: Frame shorter than 64 bytes 6: Preamble shorter than 7 bytes 7: Preamble longer than 7 bytes uiGpio: 0: comes for Ethernet port 1: comes for GPIO port uiTransparent: 0: normal Ethernet mode 1: transparent capture mode uiHeaVersion: version info, always decimal 1 uiPort: capture port/GPIO number 0..3 uiLength: real frame length in bytes uiReserved: reserved for future use Everything little-endian representation. -----Ursprüngliche Nachricht----- Von: tcpdump-workers-owner () lists tcpdump org [mailto:tcpdump-workers-owner () lists tcpdump org] Im Auftrag von Guy Harris Gesendet: Dienstag, 30. August 2011 18:48 An: tcpdump-workers () lists tcpdump org Betreff: Re: [tcpdump-workers] Request for new Link-layer header type On Aug 30, 2011, at 7:29 AM, <HPfrommer () hilscher com> wrote:
for our analysis product netANALYZER I would like to request a new link-layer header type value: LINKTYPE_NETANALYZER DLT_NETANALYZER Description: "Hilscher netANALYZER link-layer type to provide additional information for encapsulated Ethernet frames."
Is there a document online that describes where the additional information appears and what form it has, so that we can link to it from the entry in http://www.tcpdump.org/linktypes.html If not, could you supply that information, so we can create our own page to describe it and link to it from that entry?- This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe. Hilscher Gesellschaft für Systemautomation mbH Rheinstr. 15, 65795 Hattersheim Sitz der Gesellschaft: Hattersheim Geschäftsführer: Hans-Jürgen Hilscher Registergericht: Amtsgericht Frankfurt/Main Handelsregister: Frankfurt B 26873 www.hilscher.com - This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
Current thread:
- Request for new Link-layer header type HPfrommer (Aug 30)
- Re: Request for new Link-layer header type Guy Harris (Aug 30)
- Re: Request for new Link-layer header type HPfrommer (Aug 31)
- Re: Request for new Link-layer header type Guy Harris (Sep 01)
- Re: Request for new Link-layer header type HPfrommer (Sep 05)
- Re: Request for new Link-layer header type Guy Harris (Sep 05)
- Re: Request for new Link-layer header type HPfrommer (Sep 05)
- Re: Request for new Link-layer header type Guy Harris (Sep 06)
- Re: Request for new Link-layer header type HPfrommer (Aug 31)
- Re: Request for new Link-layer header type Guy Harris (Sep 06)
- Re: Request for new Link-layer header type HPfrommer (Sep 06)
- Re: Request for new Link-layer header type Guy Harris (Sep 13)
- Re: Request for new Link-layer header type HPfrommer (Sep 14)
- Re: Request for new Link-layer header type Guy Harris (Sep 14)
- Re: Request for new Link-layer header type Guy Harris (Aug 30)