Starting with v197, systemd uses predictable interface network names, the traditional interface naming scheme (eth0) is deprecated, therefore it cannot be assumed that the eth0 interface exists on the host.

This modification makes the bind_bhash test program run in a separate network namespace and no longer needs to consider the name of the network interface on the host.

Signed-off-by: Juntong Deng juntong.deng@outlook.com --- tools/testing/selftests/net/bind_bhash.sh | 26 ++++++++++++----------- 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/tools/testing/selftests/net/bind_bhash.sh b/tools/testing/selftests/net/bind_bhash.sh index ca0292d4b441..a28563bdaae0 100755 --- a/tools/testing/selftests/net/bind_bhash.sh +++ b/tools/testing/selftests/net/bind_bhash.sh @@ -2,7 +2,7 @@ # SPDX-License-Identifier: GPL-2.0

NR_FILES=32768 -SAVED_NR_FILES=$(ulimit -n) +readonly NETNS="ns-$(mktemp -u XXXXXX)"

# default values port=443 @@ -36,21 +36,21 @@ while getopts "ha:p:64" opt; do done

setup() { + ip netns add "${NETNS}" + ip -netns "${NETNS}" link add veth0 type veth peer name veth1 + ip -netns "${NETNS}" link set lo up + ip -netns "${NETNS}" link set veth0 up + ip -netns "${NETNS}" link set veth1 up + if [[ "$use_v6" == true ]]; then - ip addr add $addr_v6 nodad dev eth0 + ip -netns "${NETNS}" addr add $addr_v6 nodad dev veth0 else - ip addr add $addr_v4 dev lo + ip -netns "${NETNS}" addr add $addr_v4 dev lo fi - ulimit -n $NR_FILES }

cleanup() { - if [[ "$use_v6" == true ]]; then - ip addr del $addr_v6 dev eth0 - else - ip addr del $addr_v4/32 dev lo - fi - ulimit -n $SAVED_NR_FILES + ip netns del "${NETNS}" }

if [[ "$addr" != "" ]]; then @@ -59,8 +59,10 @@ if [[ "$addr" != "" ]]; then fi setup if [[ "$use_v6" == true ]] ; then - ./bind_bhash $port "ipv6" $addr_v6 + ip netns exec "${NETNS}" sh -c \ + "ulimit -n ${NR_FILES};./bind_bhash ${port} ipv6 ${addr_v6}" else - ./bind_bhash $port "ipv4" $addr_v4 + ip netns exec "${NETNS}" sh -c \ + "ulimit -n ${NR_FILES};./bind_bhash ${port} ipv4 ${addr_v4}" fi cleanup