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75df712cdd
This commit adds a test case for netdevsim carrier state consistency. Specifically, the added test verifies the carrier state during the following operations: 1. Unlink two netdevsims 2. ifdown one netdevsim, then ifup again 3. Link the netdevsims again 4. ifdown one netdevsim, then ifup again These steps verifies that the carrier is UP iff two netdevsims are linked and ifuped. Signed-off-by: Yohei Kojima <yk@y-koj.net> Link: https://patch.msgid.link/481e2729e53b6074ebfc0ad85764d8feb244de8c.1767624906.git.yk@y-koj.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
203 lines
4.7 KiB
Bash
Executable file
203 lines
4.7 KiB
Bash
Executable file
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0-only
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lib_dir=$(dirname $0)/../../../net
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source $lib_dir/lib.sh
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NSIM_DEV_1_ID=$((256 + RANDOM % 256))
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NSIM_DEV_1_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_DEV_1_ID
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NSIM_DEV_2_ID=$((512 + RANDOM % 256))
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NSIM_DEV_2_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_DEV_2_ID
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NSIM_DEV_SYS_NEW=/sys/bus/netdevsim/new_device
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NSIM_DEV_SYS_DEL=/sys/bus/netdevsim/del_device
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NSIM_DEV_SYS_LINK=/sys/bus/netdevsim/link_device
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NSIM_DEV_SYS_UNLINK=/sys/bus/netdevsim/unlink_device
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socat_check()
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{
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if [ ! -x "$(command -v socat)" ]; then
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echo "socat command not found. Skipping test"
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return 1
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fi
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return 0
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}
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setup_ns()
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{
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set -e
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ip netns add nssv
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ip netns add nscl
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NSIM_DEV_1_NAME=$(find $NSIM_DEV_1_SYS/net -maxdepth 1 -type d ! \
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-path $NSIM_DEV_1_SYS/net -exec basename {} \;)
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NSIM_DEV_2_NAME=$(find $NSIM_DEV_2_SYS/net -maxdepth 1 -type d ! \
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-path $NSIM_DEV_2_SYS/net -exec basename {} \;)
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ip link set $NSIM_DEV_1_NAME netns nssv
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ip link set $NSIM_DEV_2_NAME netns nscl
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ip netns exec nssv ip addr add '192.168.1.1/24' dev $NSIM_DEV_1_NAME
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ip netns exec nscl ip addr add '192.168.1.2/24' dev $NSIM_DEV_2_NAME
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ip netns exec nssv ip link set dev $NSIM_DEV_1_NAME up
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ip netns exec nscl ip link set dev $NSIM_DEV_2_NAME up
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set +e
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}
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cleanup_ns()
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{
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ip netns del nscl
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ip netns del nssv
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}
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is_carrier_up()
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{
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local netns="$1"
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local nsim_dev="$2"
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test "$(ip netns exec "$netns" \
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cat /sys/class/net/"$nsim_dev"/carrier 2>/dev/null)" -eq 1
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}
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assert_carrier_up()
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{
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local netns="$1"
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local nsim_dev="$2"
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if ! is_carrier_up "$netns" "$nsim_dev"; then
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echo "$nsim_dev's carrier should be UP, but it isn't"
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cleanup_ns
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exit 1
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fi
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}
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assert_carrier_down()
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{
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local netns="$1"
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local nsim_dev="$2"
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if is_carrier_up "$netns" "$nsim_dev"; then
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echo "$nsim_dev's carrier should be DOWN, but it isn't"
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cleanup_ns
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exit 1
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fi
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}
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###
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### Code start
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###
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socat_check || exit 4
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modprobe netdevsim
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# linking
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echo $NSIM_DEV_1_ID > $NSIM_DEV_SYS_NEW
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echo $NSIM_DEV_2_ID > $NSIM_DEV_SYS_NEW
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udevadm settle
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setup_ns
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NSIM_DEV_1_FD=$((256 + RANDOM % 256))
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exec {NSIM_DEV_1_FD}</var/run/netns/nssv
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NSIM_DEV_1_IFIDX=$(ip netns exec nssv cat /sys/class/net/$NSIM_DEV_1_NAME/ifindex)
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NSIM_DEV_2_FD=$((256 + RANDOM % 256))
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exec {NSIM_DEV_2_FD}</var/run/netns/nscl
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NSIM_DEV_2_IFIDX=$(ip netns exec nscl cat /sys/class/net/$NSIM_DEV_2_NAME/ifindex)
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echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_2_FD:2000" > $NSIM_DEV_SYS_LINK 2>/dev/null
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if [ $? -eq 0 ]; then
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echo "linking with non-existent netdevsim should fail"
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cleanup_ns
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exit 1
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fi
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echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX 2000:$NSIM_DEV_2_IFIDX" > $NSIM_DEV_SYS_LINK 2>/dev/null
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if [ $? -eq 0 ]; then
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echo "linking with non-existent netnsid should fail"
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cleanup_ns
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exit 1
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fi
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echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX" > $NSIM_DEV_SYS_LINK 2>/dev/null
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if [ $? -eq 0 ]; then
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echo "linking with self should fail"
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cleanup_ns
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exit 1
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fi
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echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_2_FD:$NSIM_DEV_2_IFIDX" > $NSIM_DEV_SYS_LINK
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if [ $? -ne 0 ]; then
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echo "linking netdevsim1 with netdevsim2 should succeed"
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cleanup_ns
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exit 1
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fi
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# argument error checking
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echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_2_FD:a" > $NSIM_DEV_SYS_LINK 2>/dev/null
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if [ $? -eq 0 ]; then
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echo "invalid arg should fail"
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cleanup_ns
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exit 1
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fi
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# netdevsim carrier state consistency checking
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assert_carrier_up nssv "$NSIM_DEV_1_NAME"
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assert_carrier_up nscl "$NSIM_DEV_2_NAME"
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echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX" > "$NSIM_DEV_SYS_UNLINK"
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assert_carrier_down nssv "$NSIM_DEV_1_NAME"
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assert_carrier_down nscl "$NSIM_DEV_2_NAME"
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ip netns exec nssv ip link set dev "$NSIM_DEV_1_NAME" down
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ip netns exec nssv ip link set dev "$NSIM_DEV_1_NAME" up
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assert_carrier_down nssv "$NSIM_DEV_1_NAME"
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assert_carrier_down nscl "$NSIM_DEV_2_NAME"
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echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_2_FD:$NSIM_DEV_2_IFIDX" > $NSIM_DEV_SYS_LINK
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assert_carrier_up nssv "$NSIM_DEV_1_NAME"
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assert_carrier_up nscl "$NSIM_DEV_2_NAME"
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ip netns exec nssv ip link set dev "$NSIM_DEV_1_NAME" down
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ip netns exec nssv ip link set dev "$NSIM_DEV_1_NAME" up
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assert_carrier_up nssv "$NSIM_DEV_1_NAME"
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assert_carrier_up nscl "$NSIM_DEV_2_NAME"
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# send/recv packets
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tmp_file=$(mktemp)
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ip netns exec nssv socat TCP-LISTEN:1234,fork $tmp_file &
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pid=$!
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res=0
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wait_local_port_listen nssv 1234 tcp
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echo "HI" | ip netns exec nscl socat STDIN TCP:192.168.1.1:1234
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count=$(cat $tmp_file | wc -c)
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if [[ $count -ne 3 ]]; then
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echo "expected 3 bytes, got $count"
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res=1
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fi
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echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX" > $NSIM_DEV_SYS_UNLINK
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echo $NSIM_DEV_2_ID > $NSIM_DEV_SYS_DEL
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kill $pid
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echo $NSIM_DEV_1_ID > $NSIM_DEV_SYS_DEL
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cleanup_ns
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modprobe -r netdevsim
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exit $res
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