Chapter 6. Division of Labor

The Previous Chapter

The previous chapter provided an introduction to the five types of message transfer requests that can posted to and executed by a QP's SQ logic. It also introduced the single type of message transfer request that can be posted to and executed by a QP's RQ logic.

This Chapter

This chapter provides an introduction to the layers comprising the IBA stack that handles message transmission and reception. Those layers are:

  • The ULP (Upper Layer Protocol). This is actually not part of the IBA stack. Rather, it is comprised of OS and application software that uses the stack to pass messages.

  • The Verb Layer.

  • The Transport Layer.

  • The Network Layer.

  • The Link Layer.

  • The Physical Layer.

The Next Chapter

The next ...

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