Jiarong Xing Rice University
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Programmable Network systems
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His research target mainly focus on programmable network devices, (e.g. switches, routers)
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Limitations: Network visibility, speed mismatch, CPU involvement
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Current devices are only compile-time programmable
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DDoS defenses
Link-flooding attack
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They provide a spark-style DSL. can compile it and deploy to all switches in the network.
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But from a switch's view, it can only observe the network traffic to it, it cannot see the global network. To solve this, they also designed a sync protocol
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Runtime programmable switch
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When deploy the p4 program, the table will be shuffled
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key idea: stage based -> pointer based
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To replace the table, we only need to allocate the table memory and write one register.
But if the process involve multiple tables, we may go into unwanted stages
To avoid unwanted stages
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benefits of programmability on runtime
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disaggregated programmable systems