simplified update

.gitignore

@@ -1 +1,2 @@
 .idea/
+.vscode/

simple/txrx-same-host-v3.sh

@@ -0,0 +1,130 @@
+#!/bin/bash
+
+# Description   : Broadly, it transmits and receives ST and BE flows using 2-port NIC on same end-host
+# Author        : Joydeep Pal
+# Date          : Nov-2022
+# Date Modified : 10-Jan-2023, 18-May-2023, 06-Dec-2023 (Overhaul), 05-Jun-2024 (Overhaul)
+
+# System Design:
+#
+# Port 1 --> || --> Port 2
+#
+# Each interface is given to its own network namespace. This is useful when iperf/ping commands
+# are to be used on Tx and Rx ports in the same host. Otherwise these commands don't send packets
+# out to the wire because kernel routes it internally. Run in root.
+# Any Tx flow should go to another interface, same interface doesn't support both tx and rx.
+set -e
+
+# Define interface names
+INTERFACE1="enp9s0f0"
+INTERFACE2="enp9s0f1"
+
+# Create network namespaces
+ip netns add ns1
+ip netns add ns2
+
+# Assign interfaces to namespaces
+ip link set $INTERFACE1 netns ns1
+ip link set $INTERFACE2 netns ns2
+
+# ---------------------------------
+# Section 1: Configure IP addresses for the interfaces if no VLAN is needed
+# ---------------------------------
+ip netns exec ns1 ip addr add 192.168.1.1/24 dev $INTERFACE1
+ip netns exec ns2 ip addr add 192.168.1.2/24 dev $INTERFACE2
+ip netns exec ns1 ip link set $INTERFACE1 up
+ip netns exec ns2 ip link set $INTERFACE2 up
+
+COMMENT << HERE
+# Optional : Capture packet for fine-grained analysis
+
+# Start packet capture on individually for each flow at server (rx)
+tshark -i $INTERFACE1 -a duration:7 -w /tmp/capture-experiment.pcap &
+HERE
+
+# Start iperf server for each flow
+ip netns exec ns2 iperf -s -u -p 5001 > server1_stats.txt &
+ip netns exec ns2 iperf -s -u -p 5002 > server2_stats.txt &
+ip netns exec ns2 iperf -s -u -p 5001 -P 1 -i 1 -e --histogram > server1_stats.txt 2>&1 &
+# ip netns exec ns2 iperf -s -u -B $INTERFACE2 -P 1 -e --histogram --jitter-histograms -i 1 > server1_stats.txt 2>&1 &
+
+# Start iperf client for each flow
+#ip netns exec ns1 iperf -c 192.168.1.2 -u -p 5001 -t 10 -i 1 > client1_stats.txt &
+#ip netns exec ns1 iperf -c 192.168.1.2 -u -p 5001 -t 2 -i 1 -P 1 -b 10m -l 1000 -e --trip-times --tos 0
+ip netns exec ns1 iperf -c 192.168.1.2 -u -p 5001 -t 10 -i 1 -b 10m -e --trip-times --tos 0 > client1_stats.txt &
+#ip netns exec ns1 iperf -c $IP_TX -u -B $INTERFACE1 -p 5020 -t 2 -i 1 -P 1 -b 10m -l 1000 -e --trip-times --tos 0 > client1_stats.txt 2>&1 &
+ip netns exec ns1 iperf -c 192.168.1.2 -u -p 5002 -t 10 -i 1 -b 10m -e --trip-times --tos 0 > client2_stats.txt &
+#ip netns exec ns1 iperf -c $IP_TX -u -B $IFACE_TX -p 5021 -t 2 -i 1 -P 1 -b 10m -l 1000 -e --trip-times --tos 0 > client2_stats.txt 2>&1 &
+
+# Wait for iperf to finish
+wait
+
+# ----------------------------------------
+# Section 2: If VLAN interfaces are needed
+# ----------------------------------------
+ip netns exec ns1 ip link set $INTERFACE1 up
+ip netns exec ns2 ip link set $INTERFACE2 up
+
+ip netns exec ns1 ip link add link enp9s0f0 name enp9s0f0.11 type vlan id 11
+ip netns exec ns1 ip link add link enp9s0f0 name enp9s0f0.12 type vlan id 12
+ip netns exec ns1 ip addr add 192.168.1.11/24 dev enp9s0f0.11
+ip netns exec ns1 ip addr add 192.168.2.12/24 dev enp9s0f0.12
+ip netns exec ns1 ip link set enp9s0f0.11 up
+ip netns exec ns1 ip link set enp9s0f0.12 up
+
+ip netns exec ns2 ip link add link enp9s0f1 name enp9s0f1.11 type vlan id 11
+ip netns exec ns2 ip link add link enp9s0f1 name enp9s0f1.12 type vlan id 12
+ip netns exec ns2 ip addr add 192.168.1.21/24 dev enp9s0f1.11
+ip netns exec ns2 ip addr add 192.168.2.22/24 dev enp9s0f1.12
+ip netns exec ns2 ip link set enp9s0f1.11 up
+ip netns exec ns2 ip link set enp9s0f1.12 up
+
+## iperf server and client
+ip netns exec ns2 iperf -s -B 192.168.1.21 -u -p 5001
+ip netns exec ns2 iperf -s -B 192.168.2.22 -u -p 5002
+ip netns exec ns1 iperf -c 192.168.1.21 -B 192.168.1.11 -u -p 5001 -t 10 -i 1 -b 10m -e --trip-times --tos 0
+ip netns exec ns1 iperf -c 192.168.2.22 -B 192.168.2.12 -u -p 5002 -t 10 -i 1 -b 10m -e --trip-times --tos 0
+
+# ------------------------------------
+# Section 2a: If capture is needed
+# ------------------------------------
+ip netns exec ns1 tshark -i enp9s0f0.11 -a duration:5 -s 118 -w /tmp/capture-experiment-1-tx.pcap &
+ip netns exec ns1 tshark -i enp9s0f0.12 -a duration:5 -s 118 -w /tmp/capture-experiment-2-tx.pcap &
+ip netns exec ns2 tshark -i enp9s0f1.11 -a duration:5 -s 118 -w /tmp/capture-experiment-1-rx.pcap &
+ip netns exec ns2 tshark -i enp9s0f1.12 -a duration:5 -s 118 -w /tmp/capture-experiment-2-rx.pcap &
+wait
+
+# ------------------------------------
+# Cleanup
+# ------------------------------------
+
+# Detach interfaces from namespaces
+ip netns exec ns1 ip link set $INTERFACE1 down
+ip netns exec ns2 ip link set $INTERFACE2 down
+ip netns exec ns1 ip link set $INTERFACE1 netns 1
+ip netns exec ns2 ip link set $INTERFACE2 netns 1
+
+# Delete namespaces
+ip netns delete ns1
+ip netns delete ns2
+
+COMMENT << HERE
+# Optional : If capture enabled for fine-grained analysis,
+# convert pcap to csv for analysis using python script'
+args="-T fields -E header=y -E separator=, \
+-e udp.dstport -e frame.time_epoch -e frame.len \
+-e iperf.tos -e iperf.id -e iperf.id2 -e iperf.sec -e iperf.usec"
+# -e iperf.mport -e ip.src -e ip.dst -e ip.id -e udp.srcport -e udp.dstport  \
+
+# Each flow's tx and rx should be put into {tx1,rx1,tx2,rx2,..}.csv
+eval tshark -r /tmp/capture-experiment-1-tx.pcap $args > /tmp/capture-experiment-1-tx.csv &
+eval tshark -r /tmp/capture-experiment-1-rx.pcap $args > /tmp/capture-experiment-1-rx.csv &
+eval tshark -r /tmp/capture-experiment-2-tx.pcap $args > /tmp/capture-experiment-2-tx.csv &
+eval tshark -r /tmp/capture-experiment-2-rx.pcap $args > /tmp/capture-experiment-2-rx.csv &
+wait
+./txrx-same-system-analysis.py
+HERE
+
+echo '=================== Done !! ====================='
+echo ' '
+

simple/txrx-separate-hosts.sh

@@ -0,0 +1,80 @@
+#!/bin/bash
+
+# Description   : Runs iperf2 tests on separate hosts (Real and/or in Mininet)
+# Author        : Joydeep Pal
+# Date Created	: 06-Dec-2023
+# Date Modified	: 07-Jun-2024
+
+# Note : Can try with `sudo ... -z` (Linux real-time scheduler) to see if you get reduced latency
+
+# Script Parameters
+# Destination - mininet's host h2
+# h2-eth0 - 10.6.6.2
+# Source - mininet's host h1
+# h1-eth0 - 10.3.3.1
+
+set -e
+
+# Define interface names
+INTERFACE1="h1-eth0"
+INTERFACE2="h2-eth0"
+
+COMMENT << HERE
+# Optional : Capture packet for fine-grained analysis
+
+# Start packet capture individually for each flow at server (rx)
+tshark -i $INTERFACE1 -a duration:15 -w rx-exp1.pcapng &
+tshark -i $INTERFACE2 -a duration:15 -w tx-exp1.pcapng &
+HERE
+
+# Start iperf server for each flow
+iperf -s -u -p 5010 -B '10.3.3.1'   -i 1 -P 1 -e --histogram --jitter-histograms & # >> flow1-rx.csv &
+iperf -s -u -p 5011 -B '10.10.10.1' -i 1 -P 1 -e --histogram --jitter-histograms &
+
+# Start iperf client for each flow
+iperf -c '10.3.3.1' -u -p 5010 -B '10.6.6.2' -t 10 -P 1 -i 1 -b 1m -l 1000 --tos 0 -e --trip-times & # >> flow1-tx.csv & \
+iperf -c '10.10.10.1' -u -p 5010 -B '10.10.10.2' -t 10 -P 1 -i 1 -b 1m -l 1000 --tos 0 -e --trip-times &
+
+# Wait for iperf to finish
+wait
+
+COMMENT << HERE
+# Optional : If capture enabled for fine-grained analysis,
+# convert pcap to csv for analysis using python script'
+
+tshark -r rx-exp1.pcapng -Y "udp.dstport==5010 && iperf.id2<=4000000000 && not icmp" -w /tmp/capture-experiment-rx.pcap
+tshark -r tx-exp1.pcapng -Y "udp.dstport==5010 && iperf.id2<=4000000000 && not icmp" -w /tmp/capture-experiment-tx.pcap
+
+args="-T fields -E header=y -E separator=, \
+-e ip.src -e ip.dst -e ip.id -e udp.srcport -e udp.dstport \
+-e frame.time_epoch -e frame.len \
+-e iperf.id -e iperf.id2 -e iperf.sec -e iperf.usec -e iperf.bufferlen"  # -e data.len -e data.data
+
+# Each flow's tx and rx should be put into {tx1,rx1,tx2,rx2,..}.csv
+eval tshark -r /tmp/capture-experiment.pcap $args > tx1.csv &
+eval tshark -r /tmp/capture-experiment.pcap $args > rx1.csv &
+eval tshark -r /tmp/capture-experiment.pcap $args > tx2.csv &
+wait
+
+sleep 1
+ls -al *.csv
+exit
+
+COMMANDS << HERE
+echo 'Ping from h1 to h2'
+ping -I 10.3.3.1 10.6.6.2 -c 5
+echo 'Ping from h2 to h1'
+ping -I 10.6.6.2 10.3.3.1 -c 5
+
+echo 'iperf test from h2 (client) to h1 (server)'
+iperf -s -B 10.3.3.1 -e -P 1
+iperf -c 10.3.3.1 -B 10.6.6.2 -t 1 -P 1 -X -e --trip-times
+
+echo 'iperf test from h1 (client) to h2 (server)'
+iperf -s -B 10.6.6.2 -e -P 1
+iperf -c 10.6.6.2 -B 10.3.3.1 -t 1 -P 1 -X -e --trip-times
+HERE
+
+echo '=================== Done !! ====================='
+echo ' '
+