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virnetdev: move virNetDevSetRootQDisc to virnetdevbandwidth

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The function in question uses "tc" binary so virnetdevbandwidth feels
like better place for it.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Pavel Hrdina 2021-04-15 00:34:48 +02:00
parent 50a021df33
commit 18882ea776
7 changed files with 60 additions and 54 deletions
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2
src/libvirt_private.syms
View File

@ -2714,7 +2714,6 @@ virNetDevSetOnline;
virNetDevSetPromiscuous;
virNetDevSetRcvAllMulti;
virNetDevSetRcvMulti;
virNetDevSetRootQDisc;
virNetDevSetupControl;
virNetDevSysfsFile;
virNetDevValidateConfig;
@ -2728,6 +2727,7 @@ virNetDevBandwidthEqual;
virNetDevBandwidthFree;
virNetDevBandwidthPlug;
virNetDevBandwidthSet;
virNetDevBandwidthSetRootQDisc;
virNetDevBandwidthUnplug;
virNetDevBandwidthUpdateFilter;
virNetDevBandwidthUpdateRate;

3
src/qemu/qemu_domain.c
View File

@ -50,6 +50,7 @@
#include "domain_event.h"
#include "domain_validate.h"
#include "virtime.h"
#include "virnetdevbandwidth.h"
#include "virnetdevopenvswitch.h"
#include "virstoragefile.h"
#include "storage_source.h"
@ -11571,7 +11572,7 @@ qemuDomainInterfaceSetDefaultQDisc(virQEMUDriver *driver,
actualType == VIR_DOMAIN_NET_TYPE_NETWORK ||
actualType == VIR_DOMAIN_NET_TYPE_BRIDGE ||
actualType == VIR_DOMAIN_NET_TYPE_DIRECT) {
if (virNetDevSetRootQDisc(net->ifname, "noqueue") < 0)
if (virNetDevBandwidthSetRootQDisc(net->ifname, "noqueue") < 0)
return -1;
}

46
src/util/virnetdev.c
View File

@ -3507,52 +3507,6 @@ virNetDevRunEthernetScript(const char *ifname, const char *script)
}
/**
* virNetDevSetRootQDisc:
* @ifname: the interface name
* @qdisc: queueing discipline to set
*
* For given interface @ifname set its root queueing discipline
* to @qdisc. This can be used to replace the default qdisc
* (usually pfifo_fast or whatever is set in
* /proc/sys/net/core/default_qdisc) with different qdisc.
*
* Returns: 0 on success,
* -1 if failed to exec tc (with error reported)
* -2 if tc failed (with no error reported)
*/
int
virNetDevSetRootQDisc(const char *ifname,
const char *qdisc)
{
g_autoptr(virCommand) cmd = NULL;
g_autofree char *outbuf = NULL;
g_autofree char *errbuf = NULL;
int status;
/* Ideally, we would have a netlink implementation and just
* call it here. But honestly, I tried and failed miserably.
* Fallback to spawning tc. */
cmd = virCommandNewArgList(TC, "qdisc", "add", "dev", ifname,
"root", "handle", "0:", qdisc,
NULL);
virCommandAddEnvString(cmd, "LC_ALL=C");
virCommandSetOutputBuffer(cmd, &outbuf);
virCommandSetErrorBuffer(cmd, &errbuf);
if (virCommandRun(cmd, &status) < 0)
return -1;
if (status != 0) {
VIR_DEBUG("Setting qdisc failed: output='%s' err='%s'", outbuf, errbuf);
return -2;
}
return 0;
}
/**
* virNetDevReserveName:
* @name: name of an existing network device

4
src/util/virnetdev.h
View File

@ -333,10 +333,6 @@ int virNetDevSysfsFile(char **pf_sysfs_device_link,
int virNetDevRunEthernetScript(const char *ifname, const char *script)
G_GNUC_NO_INLINE;
int virNetDevSetRootQDisc(const char *ifname,
const char *qdisc)
G_GNUC_NO_INLINE;
int virNetDevVFInterfaceStats(virPCIDeviceAddress *vfAddr,
virDomainInterfaceStatsPtr stats)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);

50
src/util/virnetdevbandwidth.c
View File

@ -23,11 +23,14 @@
#include "vircommand.h"
#include "viralloc.h"
#include "virerror.h"
#include "virlog.h"
#include "virstring.h"
#include "virutil.h"
#define VIR_FROM_THIS VIR_FROM_NONE
VIR_LOG_INIT("util.netdevbandwidth");
void
virNetDevBandwidthFree(virNetDevBandwidth *def)
{
@ -749,3 +752,50 @@ virNetDevBandwidthUpdateFilter(const char *ifname,
VIR_FREE(class_id);
return ret;
}
/**
* virNetDevBandwidthSetRootQDisc:
* @ifname: the interface name
* @qdisc: queueing discipline to set
*
* For given interface @ifname set its root queueing discipline
* to @qdisc. This can be used to replace the default qdisc
* (usually pfifo_fast or whatever is set in
* /proc/sys/net/core/default_qdisc) with different qdisc.
*
* Returns: 0 on success,
* -1 if failed to exec tc (with error reported)
* -2 if tc failed (with no error reported)
*/
int
virNetDevBandwidthSetRootQDisc(const char *ifname,
const char *qdisc)
{
g_autoptr(virCommand) cmd = NULL;
g_autofree char *outbuf = NULL;
g_autofree char *errbuf = NULL;
int status;
/* Ideally, we would have a netlink implementation and just
* call it here. But honestly, I tried and failed miserably.
* Fallback to spawning tc. */
cmd = virCommandNewArgList(TC, "qdisc", "add", "dev", ifname,
"root", "handle", "0:", qdisc,
NULL);
virCommandAddEnvString(cmd, "LC_ALL=C");
virCommandSetOutputBuffer(cmd, &outbuf);
virCommandSetErrorBuffer(cmd, &errbuf);
if (virCommandRun(cmd, &status) < 0)
return -1;
if (status != 0) {
VIR_DEBUG("Setting qdisc failed: output='%s' err='%s'", outbuf, errbuf);
return -2;
}
return 0;
}

4
src/util/virnetdevbandwidth.h
View File

@ -74,3 +74,7 @@ int virNetDevBandwidthUpdateFilter(const char *ifname,
unsigned int id)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2)
G_GNUC_WARN_UNUSED_RESULT;
int virNetDevBandwidthSetRootQDisc(const char *ifname,
const char *qdisc)
G_GNUC_NO_INLINE;

5
tests/qemuxml2argvmock.c
View File

@ -25,6 +25,7 @@
#include "virmock.h"
#include "virlog.h"
#include "virnetdev.h"
#include "virnetdevbandwidth.h"
#include "virnetdevip.h"
#include "virnetdevtap.h"
#include "virnetdevopenvswitch.h"
@ -277,8 +278,8 @@ qemuBuildTPMOpenBackendFDs(const char *tpmdev G_GNUC_UNUSED,
int
virNetDevSetRootQDisc(const char *ifname G_GNUC_UNUSED,
const char *qdisc G_GNUC_UNUSED)
virNetDevBandwidthSetRootQDisc(const char *ifname G_GNUC_UNUSED,
const char *qdisc G_GNUC_UNUSED)
{
return 0;
}