p4-digests

jack test Barebones repo for getting started sending and receiving digest messages on a p4 bmv2 switch. Please run this in the VM provided by P4 in this p4 repo: https://github.com/p4lang/tutorials

General Steps:

Navigate to an item in the src folder (boilerplate, pmu_example, e.t.c)
Call make run
Dont forget to load table rules using simple_switch_CLI < rules.cmd
xterm into h1, s1, and h2

General Notes:

To adjust the topology of the network adjust the topology.json folder in each example's pod-topo folder

To try the pmu_example:

Navigate to the pmu_example folder
Call make run
In mininet, call xterm h1 h2 s1
Navigate to s1's terminal
Run simple_switch_CLI < rules.cmd to install the forwarding rules on the device
Run python3 controller.py --terminate_after 100 to enable a script that listens for digest messages. The 100 is arbitrary in this case (the program will end after generating 100 packets)
Navigate to h2's terminal
Run python3 receive.py --terminate_after <the number of packets you expect to receive>
Navigate to h1's terminal
Run python3 send.py pmu12.csv --num_packets 100
Notice that h2s terminal has recieved all packets
Go into pmu_example/missing-data.json and add in a set of indexes between 1-100
Re-run the receive.py script
Re-run the send.py script
Notice that s1 generate packets to send to h2
Effectively, if you have 5 missing indexes in your missing indexes file, you only send 95 packets from send.py. Receive.py receives 100 packets, meaning the switch made up the difference

JackTNorris/p4-digests

p4-digests