A Next Generation Home Access Point and Router

Transcription

1 A Next Generation Home Access Point and Router Product Marketing Manager Network Communication Technology and Application of the New Generation

2 Points of Discussion Why Do We Need a Next Gen Home Router? Inside the Next Generation Home Router Applications and Building Blocks Choosing the Right SoC Solution Closing Thoughts

3 Why Do We Need a Next Gen Home Router? Network Attach Storage

4 Limitations of Current Home Router Solutions Current Solutions not Scaled to Handle Bandwidth Explosion from Social Networks, Media Applications, NAS Storage and Other Applications Little or No Attention Paid to Latency & Bandwidth Profiles Insufficient CPU Headroom for Additional Applications -- Main CPU Primarily Engaged in Packet Forwarding Unscalable Platform for Current & Future Applications

5 Inside the Next Generation Home Router Gigabit WiFi Throughput for Multiple Client Access Gigabit Line Rate Forwarding Traffic Shaping & QoS Flow Prioritization Application-based Prioritization for Latency Sensitive Flows NAS for Store, Stream and Share Data USB 3.0 Support for High Bandwidth Storage Content Filtering Deep Packet Inspection for Intrusion Prevention Network Address Translation Application Scalable

6 Applications & Building Blocks

7 Achieving Gigabit Line Rate IP Forwarding Packet Pro Packet Pro end-end offload Bridge unwanted packets Wire-speed packets No packet drop SLIMpro Keelback 600MHz DDR3 Exception Traffic Management Traffic Classifier Rule (x) QM Classifier Rules (y) QM Processor Chokes 64B packets Burst Multiple Lines Exception Traffic Management Traffic Standard Processors CPU 1.2GHz DDR3 1 1

8 % CPU Utilization IPv4 Forwarding With and Without HW Offload CPU Utilization % Packet Received Linux OS + offload Linux OS Packet Received Linux OS + offload Linux OS Packet Size (B)

9 QoS Traffic Prioritization and Rate Shaping DDR3 PowerPC PowerPC SLIMpro High Priority flow Classifier PQ0 Low Priority flow Classifier PQn VQ Latency Sensitive + Low Priority Traffic Classify Prioritize + Rate Shape Output Stage Cut through In-line IPSec, MACsec CSUM validation Identify flows Programmable any field(s) Dynamic {MAC, VLAN,..} {IPv4/IPv6, TCP, CoS..} Priority Queuing WRR Strict TSO In-Line IPsec, MACsec CSUM Generation

10 Application-based QoS and DPI Traffic Shaping to 20 Mbps Traffic Shaping to 2 Mbps Traffic Shaping to 40 Mbps Traffic Shaping to 10 Mbps Application Signature Queue No Skype 1 Netflix 2 Xbox Live 3 Bit Torrent 4 Application Skype Netflix Xbox Live Bit Torrent Assigned Bandwidth 10Mbps 20Mbps 40Mbps 2Mbps Traffic Rate Shaping Classification Engine SN IN IN IN IN IN Ethertype Protocol IN IN IN IN IN Source IP -> hash IN Destination IP -> hash IN Port/CoS KN KN KN KN KN Queue & Traffic Manager Non-Blocking PQ0 PQ1 PQ2 PQ3 AVB Q VQ1 AVB Q AVB Q HW QoS & DPI Engine

11 Content Filtering and Security 1 2 Classification Trie SN Ethertype Protocol IN IN IN IN IN IN IN IN IN IN Source IP Hash IN Destination IP Hash IN Port/CoS Access Control List & Filter Packet Signature Action URL DROP Application BitTorrent DROP TCP Port Nos XXX to YYY DROP Offset DROP Message Passing I/F Integrated DMA Engine Input FIFO Buffer Header/Trailer Processing Encrypt/Decrypt Module Context Registers SA cache Hash Module Output FIFO Buffer Security Engine Kasumi Module KN KN KN KN KN True & Pseudo Random Number Generator Public Key Accelerator (PKA) 2 1

12 Talking to USB 3.0 Drive Over NAS YOUR DOWNLOAD IS 100% COMPLETE! V V V V V V V V V V V V

13 Offloading Network Attached Storage SAMBA User Ethernet TCP IP Eth L.R.O. Zero Copy File System SATA Driver Kernel Large File Client NAS Controller SATA Drive Storage Optimized Storage Write Operation Optimized Storage Read Operation

14 Segmentation and Reassembly TCP Segmentation Offload Host TSO PowerPC Hardware Queue Manager (QM) RAID 5/6 S A T A SATA Drive Storage Large Receive Offload Host Classifier SLIMpro PowerPC Hardware Queue Manager (QM) RAID 5/6 S A T A SATA Drive Storage

15 Robocopy TSO and LRO 4GB Single File, Single Thread Throughput (MB/s) 4GB Single File = 62,500 x 64KB FS Blocks Single 64KB FS Blocks = 44 x 1518B TCP Segments CPU Utilization % 0 TSO No TSO Read Operation LRO No LRO Write Operation 0

16 Network Address Translation Before NAT NAT Type Source IP Address Outgoing Source IP Address Masquerade N N N N N Classification Engine SN Ethertype IN IN IN IN IN Protocol IN IN IN IN IN Source IP hash IN Destination IP hash IN Port/CoS KN KN KN KN KN SLIMpro Micro Engine After NAT NAT Engine

17 Choosing the Right SoC Solution

18 Assisting the Processor Using Offloads Throughput Classification DPI Core-n Offloads & Accelerators Core-n IP forwarding Traffic Shaping TCP SAR TCP, UDP CSUM Security NAT Core-0 Classical Core-0 APM

19 Packet Pro High Level Block Diagram APM86xxx 16/32/ Mbps 32-bit 460 PPC 1.4GHz DDR3 Controller ECC Security Classifier Queue & Traffic Manager Classifier Classifier MAC Sec / IP Sec MAC Sec / IP Sec IPC Mailbox BR SLIMpro ARM 250MHz Customizable Off-Load Engine 32-bit 460 PPC 1.4GHz OCM HBF PCIe x4 MPIC PCIe x1 PLB5 CCF DMA SATA 2.0 BR USB 3.0 APB BR AHB SDHC UART I2C GPIO NAND/ NOR EBUS USB + PHY USB + PHY

20 Closing Thoughts Raw CPU Horse Power Insufficient to Address Processing & Latency Requirements of Current and Next-Gen Applications Dedicated, Application-Aware Offload Engines Economically Scale and Reduce Over-Clocking the CPU ie. Power Savings Offloading Primary Usage Scenarios & Commonly Used Applications Frees CPU headroom for Other Apps Well-designed SoC can Greatly Improve Application Response Times, thereby User Experience