Files
linux/tools/testing/selftests/net/setup_loopback.sh
Hangbin Liu 4416c5f53b selftests/net: use unique netns name for setup_loopback.sh setup_veth.sh
The setup_loopback and setup_veth use their own way to create namespace.
So let's just re-define server_ns/client_ns to unique name.
At the same time update the namespace name in gro.sh and toeplitz.sh.
As I don't have env to run toeplitz.sh. Here is only the gro test result.

 # ./gro.sh
 running test ipv4 data
 Expected {200 }, Total 1 packets
 Received {200 }, Total 1 packets.
 ...
 Gro::large test passed.
 All Tests Succeeded!

Acked-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-12-23 00:26:32 +00:00

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
readonly FLUSH_PATH="/sys/class/net/${dev}/gro_flush_timeout"
readonly IRQ_PATH="/sys/class/net/${dev}/napi_defer_hard_irqs"
readonly FLUSH_TIMEOUT="$(< ${FLUSH_PATH})"
readonly HARD_IRQS="$(< ${IRQ_PATH})"
readonly server_ns=$(mktemp -u server-XXXXXXXX)
readonly client_ns=$(mktemp -u client-XXXXXXXX)
netdev_check_for_carrier() {
local -r dev="$1"
for i in {1..5}; do
carrier="$(cat /sys/class/net/${dev}/carrier)"
if [[ "${carrier}" -ne 1 ]] ; then
echo "carrier not ready yet..." >&2
sleep 1
else
echo "carrier ready" >&2
break
fi
done
echo "${carrier}"
}
# Assumes that there is no existing ipvlan device on the physical device
setup_loopback_environment() {
local dev="$1"
# Fail hard if cannot turn on loopback mode for current NIC
ethtool -K "${dev}" loopback on || exit 1
sleep 1
# Check for the carrier
carrier=$(netdev_check_for_carrier ${dev})
if [[ "${carrier}" -ne 1 ]] ; then
echo "setup_loopback_environment failed"
exit 1
fi
}
setup_macvlan_ns(){
local -r link_dev="$1"
local -r ns_name="$2"
local -r ns_dev="$3"
local -r ns_mac="$4"
local -r addr="$5"
ip link add link "${link_dev}" dev "${ns_dev}" \
address "${ns_mac}" type macvlan
exit_code=$?
if [[ "${exit_code}" -ne 0 ]]; then
echo "setup_macvlan_ns failed"
exit $exit_code
fi
[[ -e /var/run/netns/"${ns_name}" ]] || ip netns add "${ns_name}"
ip link set dev "${ns_dev}" netns "${ns_name}"
ip -netns "${ns_name}" link set dev "${ns_dev}" up
if [[ -n "${addr}" ]]; then
ip -netns "${ns_name}" addr add dev "${ns_dev}" "${addr}"
fi
sleep 1
}
cleanup_macvlan_ns(){
while (( $# >= 2 )); do
ns_name="$1"
ns_dev="$2"
ip -netns "${ns_name}" link del dev "${ns_dev}"
ip netns del "${ns_name}"
shift 2
done
}
cleanup_loopback(){
local -r dev="$1"
ethtool -K "${dev}" loopback off
sleep 1
# Check for the carrier
carrier=$(netdev_check_for_carrier ${dev})
if [[ "${carrier}" -ne 1 ]] ; then
echo "setup_loopback_environment failed"
exit 1
fi
}
setup_interrupt() {
# Use timer on host to trigger the network stack
# Also disable device interrupt to not depend on NIC interrupt
# Reduce test flakiness caused by unexpected interrupts
echo 100000 >"${FLUSH_PATH}"
echo 50 >"${IRQ_PATH}"
}
setup_ns() {
# Set up server_ns namespace and client_ns namespace
setup_macvlan_ns "${dev}" ${server_ns} server "${SERVER_MAC}"
setup_macvlan_ns "${dev}" ${client_ns} client "${CLIENT_MAC}"
}
cleanup_ns() {
cleanup_macvlan_ns ${server_ns} server ${client_ns} client
}
setup() {
setup_loopback_environment "${dev}"
setup_interrupt
}
cleanup() {
cleanup_loopback "${dev}"
echo "${FLUSH_TIMEOUT}" >"${FLUSH_PATH}"
echo "${HARD_IRQS}" >"${IRQ_PATH}"
}