Solaris OS Networking - The Magic Revealed


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Date: January 2008
Type: White Paper
Rating: (0)

Overview: Before the Solaris 10 OS, the stack uses STREAMS perimeter and kernel adaptive mutexes for multithreading. TCP uses a STREAMS QPAIR perimeter, UDP uses a STREAMS QPAIR with PUTSHARED, and IP uses a PERMOD perimeter with PUTSHARED and various TCP, UDP, and IP global data structures protected by mutexes. The stack is executed by both user-land threads executing various system calls, the network device driver read-side interrupt or device driver worker thread, and by STREAMS framework worker threads. The current perimeter provides a per-module, per-protocol stack layer, or horizontal perimeter.

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