RnaSessInitialize

This function is called by Dial-Up Networking to allow the SMM to initialize and prepare itself for managing the session. The overlaying SMM should do the following during this function.

• Calls the overlaid SMM's RnaSessInitialize functions to obtain the dispatch function table. The function table would contain the entry points to Start and Stop functions.
• Returns the entry points to the Start (RnaSessStart) and Stop (RnaSessStop) functions for the overlaying DLL.

In the sample, the SMM calls the PPPSMM's RnaSessInitialize function. If the function succeeds, the SMM successfully overlays the PPPSMM and returns the entry points to its RnaSessStart and RnaSessStop functions (SMMSessStart and SMMSessStop respectively) to Dial-Up Networking.