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Link-layer header type request for DisplayPort AUX channel
From: dirk.eibach () gdsys cc
Date: Mon, 23 Apr 2018 12:19:51 +0200
From: Dirk Eibach <dirk.eibach () gdsys cc> I need a link-layer header type value for DisplayPort AUX channel. Description: DisplayPort AUX channel monitoring data as specified by VESA DisplayPort(DP) Standard preceeded by a pseudo-header. LINKTYPE_DPAUX Packet structure (all fields are 8 Bit wide) +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Packet Type | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Payload | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Packet Type DATA +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type DATA(0x00) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | From Sink(0x00)/Source(0x01) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | AUX channel data | This is the actual Data as specified by the DisplayPort standard. It is preceded by the information if the Data was sent from the Sink(e.g. a display) or from the Source(e.g. a graphics card). Packet Type EVENT +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type EVENT(0x02) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Input Status | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ One of the monitored input signals has changed its value. Input status encoding: Bit 0: HPD (Hot Plug Detect) Bit 1-7: Application specific Packet Type START +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type START(0x03) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Input Status | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ A monitor session was started. Inputs status encoding as specified in EVENT packet description. Packet Type STOP +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type STOP(0x04) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ A monitor session was stopped. _______________________________________________ tcpdump-workers mailing list tcpdump-workers () lists tcpdump org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
Current thread:
- Link-layer header type request for DisplayPort AUX channel dirk . eibach (Apr 23)
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- Re: Link-layer header type request for DisplayPort AUX channel Dirk Eibach (Apr 24)
- Message not available