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ipvs: ensure selected scheduler kernel modules are loaded

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Signed-off-by: Christopher M. Luciano <cmluciano@us.ibm.com>
This commit is contained in:
Christopher M. Luciano
2020-07-13 15:20:59 -04:00
parent 240a72b5c0
commit e2a0eddaf0
5 changed files with 71 additions and 4 deletions
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27
pkg/proxy/ipvs/proxier_test.go
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@@ -259,6 +259,7 @@ func TestCleanupLeftovers(t *testing.T) {
func TestCanUseIPVSProxier(t *testing.T) {
testCases := []struct {
mods []string
scheduler string
kernelVersion string
kernelErr error
ipsetVersion string
@@ -268,6 +269,7 @@ func TestCanUseIPVSProxier(t *testing.T) {
// case 0, kernel error
{
mods: []string{"foo", "bar", "baz"},
scheduler: "",
kernelVersion: "4.19",
kernelErr: fmt.Errorf("oops"),
ipsetVersion: "0.0",
@@ -276,6 +278,7 @@ func TestCanUseIPVSProxier(t *testing.T) {
// case 1, ipset error
{
mods: []string{"foo", "bar", "baz"},
scheduler: "",
kernelVersion: "4.19",
ipsetVersion: MinIPSetCheckVersion,
ipsetErr: fmt.Errorf("oops"),
@@ -284,6 +287,7 @@ func TestCanUseIPVSProxier(t *testing.T) {
// case 2, missing required kernel modules and ipset version too low
{
mods: []string{"foo", "bar", "baz"},
scheduler: "rr",
kernelVersion: "4.19",
ipsetVersion: "1.1",
ok: false,
@@ -291,6 +295,7 @@ func TestCanUseIPVSProxier(t *testing.T) {
// case 3, missing required ip_vs_* kernel modules
{
mods: []string{"ip_vs", "a", "bc", "def"},
scheduler: "sed",
kernelVersion: "4.19",
ipsetVersion: MinIPSetCheckVersion,
ok: false,
@@ -298,6 +303,7 @@ func TestCanUseIPVSProxier(t *testing.T) {
// case 4, ipset version too low
{
mods: []string{"ip_vs", "ip_vs_rr", "ip_vs_wrr", "ip_vs_sh", "nf_conntrack"},
scheduler: "rr",
kernelVersion: "4.19",
ipsetVersion: "4.3.0",
ok: false,
@@ -305,6 +311,7 @@ func TestCanUseIPVSProxier(t *testing.T) {
// case 5, ok for linux kernel 4.19
{
mods: []string{"ip_vs", "ip_vs_rr", "ip_vs_wrr", "ip_vs_sh", "nf_conntrack"},
scheduler: "rr",
kernelVersion: "4.19",
ipsetVersion: MinIPSetCheckVersion,
ok: true,
@@ -312,6 +319,7 @@ func TestCanUseIPVSProxier(t *testing.T) {
// case 6, ok for linux kernel 4.18
{
mods: []string{"ip_vs", "ip_vs_rr", "ip_vs_wrr", "ip_vs_sh", "nf_conntrack_ipv4"},
scheduler: "rr",
kernelVersion: "4.18",
ipsetVersion: MinIPSetCheckVersion,
ok: true,
@@ -319,16 +327,33 @@ func TestCanUseIPVSProxier(t *testing.T) {
// case 7. ok when module list has extra modules
{
mods: []string{"foo", "ip_vs", "ip_vs_rr", "ip_vs_wrr", "ip_vs_sh", "nf_conntrack", "bar"},
scheduler: "rr",
kernelVersion: "4.19",
ipsetVersion: "6.19",
ok: true,
},
// case 8, not ok for sed based IPVS scheduling
{
mods: []string{"ip_vs", "ip_vs_rr", "ip_vs_wrr", "ip_vs_sh", "nf_conntrack"},
scheduler: "sed",
kernelVersion: "4.19",
ipsetVersion: MinIPSetCheckVersion,
ok: false,
},
// case 9, ok for dh based IPVS scheduling
{
mods: []string{"ip_vs", "ip_vs_rr", "ip_vs_wrr", "ip_vs_sh", "nf_conntrack", "ip_vs_dh"},
scheduler: "dh",
kernelVersion: "4.19",
ipsetVersion: MinIPSetCheckVersion,
ok: true,
},
}
for i := range testCases {
handle := &fakeKernelHandler{modules: testCases[i].mods, kernelVersion: testCases[i].kernelVersion}
versioner := &fakeIPSetVersioner{version: testCases[i].ipsetVersion, err: testCases[i].ipsetErr}
ok, err := CanUseIPVSProxier(handle, versioner)
ok, err := CanUseIPVSProxier(handle, versioner, testCases[i].scheduler)
if ok != testCases[i].ok {
t.Errorf("Case [%d], expect %v, got %v: err: %v", i, testCases[i].ok, ok, err)
}