1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3source lib.sh 4 5NSIM_SV_ID=$((256 + RANDOM % 256)) 6NSIM_SV_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_SV_ID 7NSIM_CL_ID=$((512 + RANDOM % 256)) 8NSIM_CL_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_CL_ID 9 10NSIM_DEV_SYS_NEW=/sys/bus/netdevsim/new_device 11NSIM_DEV_SYS_DEL=/sys/bus/netdevsim/del_device 12NSIM_DEV_SYS_LINK=/sys/bus/netdevsim/link_device 13NSIM_DEV_SYS_UNLINK=/sys/bus/netdevsim/unlink_device 14 15SERVER_IP=192.168.1.1 16CLIENT_IP=192.168.1.2 17SERVER_PORT=48675 18 19setup_ns() 20{ 21 set -e 22 ip netns add nssv 23 ip netns add nscl 24 25 NSIM_SV_NAME=$(find $NSIM_SV_SYS/net -maxdepth 1 -type d ! \ 26 -path $NSIM_SV_SYS/net -exec basename {} \;) 27 NSIM_CL_NAME=$(find $NSIM_CL_SYS/net -maxdepth 1 -type d ! \ 28 -path $NSIM_CL_SYS/net -exec basename {} \;) 29 30 ip link set $NSIM_SV_NAME netns nssv 31 ip link set $NSIM_CL_NAME netns nscl 32 33 ip netns exec nssv ip addr add "${SERVER_IP}/24" dev $NSIM_SV_NAME 34 ip netns exec nscl ip addr add "${CLIENT_IP}/24" dev $NSIM_CL_NAME 35 36 ip netns exec nssv ip link set dev $NSIM_SV_NAME up 37 ip netns exec nscl ip link set dev $NSIM_CL_NAME up 38 39 # Enable passive TFO 40 ip netns exec nssv sysctl -w net.ipv4.tcp_fastopen=519 > /dev/null 41 42 set +e 43} 44 45cleanup_ns() 46{ 47 ip netns del nscl 48 ip netns del nssv 49} 50 51### 52### Code start 53### 54 55modprobe netdevsim 56 57# linking 58 59echo $NSIM_SV_ID > $NSIM_DEV_SYS_NEW 60echo $NSIM_CL_ID > $NSIM_DEV_SYS_NEW 61udevadm settle 62 63setup_ns 64 65NSIM_SV_FD=$((256 + RANDOM % 256)) 66exec {NSIM_SV_FD}</var/run/netns/nssv 67NSIM_SV_IFIDX=$(ip netns exec nssv cat /sys/class/net/$NSIM_SV_NAME/ifindex) 68 69NSIM_CL_FD=$((256 + RANDOM % 256)) 70exec {NSIM_CL_FD}</var/run/netns/nscl 71NSIM_CL_IFIDX=$(ip netns exec nscl cat /sys/class/net/$NSIM_CL_NAME/ifindex) 72 73echo "$NSIM_SV_FD:$NSIM_SV_IFIDX $NSIM_CL_FD:$NSIM_CL_IFIDX" > \ 74 $NSIM_DEV_SYS_LINK 75 76if [ $? -ne 0 ]; then 77 echo "linking netdevsim1 with netdevsim2 should succeed" 78 cleanup_ns 79 exit 1 80fi 81 82out_file=$(mktemp) 83 84timeout -k 1s 30s ip netns exec nssv ./tfo \ 85 -s \ 86 -p ${SERVER_PORT} \ 87 -o ${out_file}& 88 89wait_local_port_listen nssv ${SERVER_PORT} tcp 90 91ip netns exec nscl ./tfo -c -h ${SERVER_IP} -p ${SERVER_PORT} 92 93wait 94 95res=$(cat $out_file) 96rm $out_file 97 98if [ $res -eq 0 ]; then 99 echo "got invalid NAPI ID from passive TFO socket" 100 cleanup_ns 101 exit 1 102fi 103 104echo "$NSIM_SV_FD:$NSIM_SV_IFIDX" > $NSIM_DEV_SYS_UNLINK 105 106echo $NSIM_CL_ID > $NSIM_DEV_SYS_DEL 107 108cleanup_ns 109 110modprobe -r netdevsim 111 112exit 0 113