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CR Kit Packet Formatting

CR Kit Packet Formatting. WINLAB Rutgers University Date : June 11 2010 Authors : Khanh Le, kle@winlab.rutgers.edu Prasanthi Maddala , prasanthi.m@gmail.com. Outline. Ethernet Frame, IP/TCP/UDP headers Packet types Host -> HW : three packet types

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CR Kit Packet Formatting

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  1. CR KitPacket Formatting WINLAB Rutgers University Date : June 11 2010 Authors : Khanh Le, kle@winlab.rutgers.edu Prasanthi Maddala, prasanthi.m@gmail.com

  2. Outline • Ethernet Frame, IP/TCP/UDP headers • Packet types • Host -> HW : three packet types • RMAP packets (register map read/write) • Data packets • TCP/IP packets • HW -> Host : three packet types • RMAP packets (read data) • Data packets • TCP/IP packets

  3. CR Kit Packet Format • Ex. 1) RMAP packet to HW : UDP src port = 00, UDP dest port = 00 • 2) Data packets to HW : UDP src port = 02, UDP dest port = 02 • 3) RMAP packet to HOST: UDP src port = 00, UDP dest port = 00 • 4) RMAP INTR packet to HOST: UDP src port = 01, UDP dest port = 01 • 5) Data packet to HOST: UDP src port = 02, UDP dest port = 02 • Ethernet Header : • Board MAC address : fixed value • Host MAC Address : machine dependent e.g. as defined by Ethernet card • IP Header : • Board IP : 192.168.0.0 • Host IP : 192.168.0.1 • UDP for board level communication e.g. RMAP and data packets • HOST -> HW : • UDP port 1000 – RMAP • UDP port 1001 – INTR (not used for Host -> HW) • UDP port 1002 – Data • HW -> HOST : • UDP port 1000 – RMAP • UDP port 1001 – INTR • UDP port 1002 – Data • TCP for any other applications e.g. ARP, DHCP.

  4. Ethernet Frame (source : wikipedia) • 802.1Q header is NOT used. • Type II Ethernet Frame format for TCP/IP application. • EtherType = 0x0800 (IPv4), 0x0806 (ARP) • Ethernet payload = 46-1500 bytes • http://en.wikipedia.org/wiki/Ethernet_frame

  5. EtherType(source : wikipedia)

  6. IPv4 packet header 1/3 (source : wikipedia) • http://en.wikipedia.org/wiki/IPv4#Header

  7. IPv4 packet header 2/3 (source : wikipedia) • http://en.wikipedia.org/wiki/IPv4#Header

  8. IPv4 packet header 3/3 (source : wikipedia) • http://en.wikipedia.org/wiki/IPv4#Header

  9. Fragmentation and Reassembly 1/2 (source : wikipedia) • http://en.wikipedia.org/wiki/IPv4#Header

  10. Fragmentation and Reassembly 2/2 (source : wikipedia) • http://en.wikipedia.org/wiki/IPv4#Header

  11. TCP (source : wikipedia) • http://en.wikipedia.org/wiki/Transmission_Control_Protocol

  12. UDP (source : wikipedia) • http://en.wikipedia.org/wiki/User_Datagram_Protocol

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