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selftests/vsock: add namespace helpers to vmtest.sh

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Add functions for initializing namespaces with the different vsock NS
modes. Callers can use add_namespaces() and del_namespaces() to create
namespaces global0, global1, local0, and local1.

The add_namespaces() function initializes global0, local0, etc... with
their respective vsock NS mode by toggling child_ns_mode before creating
the namespace.

Remove namespaces upon exiting the program in cleanup(). This is
unlikely to be needed for a healthy run, but it is useful for tests that
are manually killed mid-test.

This patch is in preparation for later namespace tests.

Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com>
Link: https://patch.msgid.link/20260121-vsock-vmtest-v16-5-2859a7512097@meta.com
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Bobby Eshleman
2026-01-21 14:11:45 -08:00
committed by Paolo Abeni
parent 873e7de9f9
commit 423ec6383e
1 changed files with 32 additions and 0 deletions
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32
tools/testing/selftests/vsock/vmtest.sh
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@@ -49,6 +49,7 @@ readonly TEST_DESCS=(
)
readonly USE_SHARED_VM=(vm_server_host_client vm_client_host_server vm_loopback)
readonly NS_MODES=("local" "global")
VERBOSE=0
@@ -103,6 +104,36 @@ check_result() {
fi
}
add_namespaces() {
local orig_mode
orig_mode=$(cat /proc/sys/net/vsock/child_ns_mode)
for mode in "${NS_MODES[@]}"; do
echo "${mode}" > /proc/sys/net/vsock/child_ns_mode
ip netns add "${mode}0" 2>/dev/null
ip netns add "${mode}1" 2>/dev/null
done
echo "${orig_mode}" > /proc/sys/net/vsock/child_ns_mode
}
init_namespaces() {
for mode in "${NS_MODES[@]}"; do
# we need lo for qemu port forwarding
ip netns exec "${mode}0" ip link set dev lo up
ip netns exec "${mode}1" ip link set dev lo up
done
}
del_namespaces() {
for mode in "${NS_MODES[@]}"; do
ip netns del "${mode}0" &>/dev/null
ip netns del "${mode}1" &>/dev/null
log_host "removed ns ${mode}0"
log_host "removed ns ${mode}1"
done
}
vm_ssh() {
ssh -q -o UserKnownHostsFile=/dev/null -p ${SSH_HOST_PORT} localhost "$@"
return $?
@@ -110,6 +141,7 @@ vm_ssh() {
cleanup() {
terminate_pidfiles "${!PIDFILES[@]}"
del_namespaces
}
check_args() {