82598EB Datasheet, PDF (260/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - Transmit Functionality
Note:
The IP header is first shown in the traditional (RFC 791) representation, and because byte
and bit ordering is confusing in that representation, the IP header is also shown in Little
Endian format. The actual data is fetched from memory in Little Endian format.
Figure 3-27. IPv4 Header (Traditional Representation)
Figure 3-28. IPv4 Header (Little Endian Order)
Identification is incremented on each packet.
Flags Field Definition:
The Flags field is defined as follows. Note that hardware does not evaluate or change these bits.
• MF – More fragments
• NF – No fragments
• Reserved
The 82598 does TCP segmentation, not IP fragmentation. IP fragmentation might occur in transit
through a network's infrastructure.
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