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libvirt/tests/virnetdevbandwidthtest.c
Michal Privoznik 91e96ab71a virnetdevbandwidthtest: Test QoS for OVS 
Ever since v7.6.0-rc1~235 we can use ovs-vsctl to set QoS instead
of tc. However, we don't have a test that's verifying generated
cmd line for ovs-vsctl.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2022-07-01 13:04:18 +02:00

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/*
* Copyright (C) 2014 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "testutils.h"
#define LIBVIRT_VIRCOMMANDPRIV_H_ALLOW
#include "vircommandpriv.h"
#include "virnetdevbandwidth.h"
#include "virnetdevopenvswitch.h"
#include "netdev_bandwidth_conf.c"
#define VIR_FROM_THIS VIR_FROM_NONE
struct testSetStruct {
const char *band;
const char *exp_cmd_tc;
const char *exp_cmd_ovs;
bool ovs;
const unsigned char *uuid;
const char *iface;
const bool hierarchical_class;
};
static int
testVirNetDevBandwidthParse(virNetDevBandwidth **var,
const char *xml)
{
g_autoptr(xmlDoc) doc = NULL;
g_autoptr(xmlXPathContext) ctxt = NULL;
if (!xml)
return 0;
if (!(doc = virXMLParseStringCtxt((xml),
"bandwidth definition",
&ctxt)))
return -1;
return virNetDevBandwidthParse(var,
NULL,
ctxt->node,
true);
}
static int
testVirNetDevBandwidthSet(const void *data)
{
const struct testSetStruct *info = data;
const char *iface = info->iface;
const char *exp_cmd = NULL;
g_autoptr(virNetDevBandwidth) band = NULL;
g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
g_autofree char *actual_cmd = NULL;
g_autoptr(virCommandDryRunToken) dryRunToken = virCommandDryRunTokenNew();
if (testVirNetDevBandwidthParse(&band, info->band) < 0)
return -1;
if (!iface)
iface = "eth0";
virCommandSetDryRun(dryRunToken, &buf, false, false, NULL, NULL);
if (info->ovs) {
exp_cmd = info->exp_cmd_ovs;
if (virNetDevOpenvswitchInterfaceSetQos(iface, band, info->uuid, true) < 0)
return -1;
} else {
exp_cmd = info->exp_cmd_tc;
if (virNetDevBandwidthSet(iface, band, info->hierarchical_class, true) < 0)
return -1;
}
if (!(actual_cmd = virBufferContentAndReset(&buf))) {
/* This is interesting, no command has been executed.
* Maybe that's expected, actually. */
}
if (STRNEQ_NULLABLE(exp_cmd, actual_cmd)) {
virTestDifference(stderr,
NULLSTR(exp_cmd),
NULLSTR(actual_cmd));
return -1;
}
return 0;
}
static int
mymain(void)
{
int ret = 0;
unsigned char uuid[VIR_UUID_BUFLEN] = { 0 };
#define VMUUID "c1018351-a229-4209-9faf-42446e0b53e5"
if (virUUIDParse(VMUUID, uuid) < 0)
return -1;
#define DO_TEST_SET(Band, Exp_cmd_tc, Exp_cmd_ovs, ...) \
do { \
struct testSetStruct data = {.band = Band, \
.exp_cmd_tc = Exp_cmd_tc, \
.exp_cmd_ovs = Exp_cmd_ovs, \
.ovs = false, \
.uuid = uuid, \
__VA_ARGS__}; \
if (virTestRun("virNetDevBandwidthSet TC", \
testVirNetDevBandwidthSet, \
&data) < 0) { \
ret = -1; \
} \
data.ovs = true; \
if (virTestRun("virNetDevBandwidthSet OVS", \
testVirNetDevBandwidthSet, \
&data) < 0) { \
ret = -1; \
} \
} while (0)
DO_TEST_SET(NULL, NULL, NULL);
DO_TEST_SET("<bandwidth/>", NULL, NULL);
DO_TEST_SET("<bandwidth>"
" <inbound average='1024'/>"
"</bandwidth>",
TC " qdisc del dev eth0 root\n"
TC " qdisc del dev eth0 ingress\n"
TC " qdisc add dev eth0 root handle 1: htb default 1\n"
TC " class add dev eth0 parent 1: classid 1:1 htb rate 1024kbps quantum 87\n"
TC " qdisc add dev eth0 parent 1:1 handle 2: sfq perturb 10\n"
TC " filter add dev eth0 parent 1:0 protocol all prio 1 handle 1 fw flowid 1\n",
OVS_VSCTL " --timeout=5 --no-heading --columns=_uuid find queue 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"'\n"
OVS_VSCTL " --timeout=5 --no-heading --columns=_uuid find qos 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"'\n"
OVS_VSCTL " --timeout=5 set port eth0 qos=@qos1 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"' --"
" --id=@qos1 create qos type=linux-htb other_config:min-rate=8192000 queues:0=@queue0 'external-ids:vm-id=\"" VMUUID "\"'"
" 'external-ids:ifname=\"eth0\"' --"
" --id=@queue0 create queue other_config:min-rate=8192000 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"'\n"
OVS_VSCTL " --timeout=5 set Interface eth0 ingress_policing_rate=0 ingress_policing_burst=0\n");
DO_TEST_SET("<bandwidth>"
" <outbound average='1024'/>"
"</bandwidth>",
TC " qdisc del dev eth0 root\n"
TC " qdisc del dev eth0 ingress\n"
TC " qdisc add dev eth0 ingress\n"
TC " filter add dev eth0 parent ffff: protocol all u32 match u32 0 0"
" police rate 1024kbps burst 1024kb mtu 64kb drop flowid :1\n",
OVS_VSCTL " --timeout=5 --no-heading --columns=_uuid find queue 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"'\n"
OVS_VSCTL " --timeout=5 --no-heading --columns=_uuid find qos 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"'\n"
OVS_VSCTL " --timeout=5 set Interface eth0 ingress_policing_rate=8192\n");
DO_TEST_SET("<bandwidth>"
" <inbound average='1' peak='2' floor='3' burst='4'/>"
" <outbound average='5' peak='6' burst='7'/>"
"</bandwidth>",
TC " qdisc del dev eth0 root\n"
TC " qdisc del dev eth0 ingress\n"
TC " qdisc add dev eth0 root handle 1: htb default 1\n"
TC " class add dev eth0 parent 1: classid 1:1 htb rate 1kbps ceil 2kbps burst 4kb quantum 1\n"
TC " qdisc add dev eth0 parent 1:1 handle 2: sfq perturb 10\n"
TC " filter add dev eth0 parent 1:0 protocol all prio 1 handle 1 fw flowid 1\n"
TC " qdisc add dev eth0 ingress\n"
TC " filter add dev eth0 parent ffff: protocol all u32 match u32 0 0"
" police rate 5kbps burst 7kb mtu 64kb drop flowid :1\n",
OVS_VSCTL " --timeout=5 --no-heading --columns=_uuid find queue 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"'\n"
OVS_VSCTL " --timeout=5 --no-heading --columns=_uuid find qos 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"'\n"
OVS_VSCTL " --timeout=5 set port eth0 qos=@qos1 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"' --"
" --id=@qos1 create qos type=linux-htb other_config:min-rate=8000 other_config:burst=32768 other_config:max-rate=16000"
" queues:0=@queue0 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"' --"
" --id=@queue0 create queue other_config:min-rate=8000 other_config:burst=32768 other_config:max-rate=16000"
" 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"'\n"
OVS_VSCTL " --timeout=5 set Interface eth0 ingress_policing_rate=40 ingress_policing_burst=56\n");
DO_TEST_SET("<bandwidth>"
" <inbound average='4294967295'/>"
" <outbound average='4294967295'/>"
"</bandwidth>",
TC " qdisc del dev eth0 root\n"
TC " qdisc del dev eth0 ingress\n"
TC " qdisc add dev eth0 root handle 1: htb default 1\n"
TC " class add dev eth0 parent 1: classid 1:1 htb rate 4294967295kbps quantum 366503875\n"
TC " qdisc add dev eth0 parent 1:1 handle 2: sfq perturb 10\n"
TC " filter add dev eth0 parent 1:0 protocol all prio 1 handle 1 fw flowid 1\n"
TC " qdisc add dev eth0 ingress\n"
TC " filter add dev eth0 parent ffff: protocol all u32 match"
" u32 0 0 police rate 4294967295kbps burst 4194303kb mtu 64kb"
" drop flowid :1\n",
OVS_VSCTL " --timeout=5 --no-heading --columns=_uuid find queue 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"'\n"
OVS_VSCTL " --timeout=5 --no-heading --columns=_uuid find qos 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"'\n"
OVS_VSCTL " --timeout=5 set port eth0 qos=@qos1 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"' --"
" --id=@qos1 create qos type=linux-htb other_config:min-rate=34359738360000"
" queues:0=@queue0 'external-ids:vm-id=\"" VMUUID "\"' 'external-ids:ifname=\"eth0\"' --"
" --id=@queue0 create queue other_config:min-rate=34359738360000 'external-ids:vm-id=\"" VMUUID "\"'"
" 'external-ids:ifname=\"eth0\"'\n"
OVS_VSCTL " --timeout=5 set Interface eth0 ingress_policing_rate=34359738360\n");
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIR_TEST_MAIN_PRELOAD(mymain, VIR_TEST_MOCK("virnetdevbandwidth"))
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