OpenSolaris

1. Project: Clearview: Network Interface Coherence
   1. Announcements
   2. Discussions
   3. Blogs
   4. Leaders
   5. Observers
   6. Files
   7. IPMP Rearchitecture
   8. IP Tunneling Device Driver
   9. Nemo Unification and Vanity Naming
   10. IP-Level Observability Devices
   11. Public DLPI API
   12. Snoop Filtering of VLAN-Tagged Packets
   13. Nemo MAC-Type Plugin Architecture
   14. Documentation
   15. Milestones
   16. Project Clearview Download Page
       1. Project Clearview Release Archive
       2. Project Clearview Build 83 Release Notes
       3. Project Clearview Build 74 Release Notes
          1. Project Clearview EA test steps
       4. Project Clearview Build 65 Release Notes
       5. Project Clearview Build 58 Release Notes
       6. Project Clearview Build 55 Release Notes
       7. Project Clearview Build 52 Release Notes
       8. Project Clearview Build 50 Release Notes
       9. Project Clearview Build 49 Release Notes
       10. Project Clearview Build 47 Release Notes
       11. Project Clearview Build 89 Release Notes
       12. Project Clearview Build 93 Release Notes
   17. Presentations

Project Clearview: Snoop Filtering of VLAN-Tagged Packets

Before ON build 50, snoop did not have visibility into VLAN Tag information when observing packets at the link layer. This will change as part of the UV component of project Clearview. VLAN Tag information will be passed up to DLPI streams that have enabled DLIOCRAW. As a result, pfmod and snoop will need to know how to construct filters that take into account this extra VLAN information. Currently, these filters assume that packets received on an Ethernet link have 14 bytes of link-layer header followed immediately by a network-layer header. This will no longer be true.

This work will make modifications to pfmod and snoop to allow snoop and other consumers of pfmod to filter on packets that include a VLAN tag. This page will contain materials related to that work.

• High level recommendations for changing snoop – This document is an overview of the possible solutions for adding VLAN filtering to snoop
• Detailed design describes adding indirection to pfmod and the appropriate support in snoop to be able to filter VLAN tagged packets.
• PSARC fast track case for VLAN observability enhancements. This is the final version that was approved by PSARC.
• Optimizing Snoop Packet Filtering Programs – A document describing how the updated version of snoop will optimize the packet filtering programs

The code changes were putback for ON 50, and appear in both ON build and Clearview build 50.