[libvirt] [PATCH] support setting bandwidth from virsh attach-interface
Hu Tao
hutao at cn.fujitsu.com
Thu Oct 13 06:52:40 UTC 2011
Adds two options, inbound and outbound, to attach-interface to set
bandwidth when attaching interfaces
---
tools/virsh.c | 96 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
tools/virsh.pod | 5 ++-
2 files changed, 98 insertions(+), 3 deletions(-)
diff --git a/tools/virsh.c b/tools/virsh.c
index bcf0603..d6c9450 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -59,6 +59,7 @@
#include "threads.h"
#include "command.h"
#include "virkeycode.h"
+#include "network.h"
static char *progname;
@@ -11225,15 +11226,49 @@ static const vshCmdOptDef opts_attach_interface[] = {
{"script", VSH_OT_DATA, 0, N_("script used to bridge network interface")},
{"model", VSH_OT_DATA, 0, N_("model type")},
{"persistent", VSH_OT_BOOL, 0, N_("persist interface attachment")},
+ {"inbound", VSH_OT_DATA, VSH_OFLAG_NONE, N_("control domain's incoming traffics")},
+ {"outbound", VSH_OT_DATA, VSH_OFLAG_NONE, N_("control domain's outgoing traffics")},
{NULL, 0, 0, NULL}
};
+/* parse inbound and outbound which are in the format of
+ * 'average,peak,burst', in which peak and burst are optional,
+ * thus 'average,,burst' and 'average,peak' are also legal. */
+static int parseRateStr(const char *rateStr, virRatePtr rate)
+{
+ char *average = NULL, *peak = NULL, *burst = NULL;
+
+ average = (char *)rateStr;
+ if (!average)
+ return -1;
+ rate->average = atol(average);
+
+ peak = strchr(average, ',');
+ if (peak) {
+ burst = strchr(peak + 1, ',');
+ if (!(burst && (burst - peak == 1))) {
+ if (virStrToLong_ull(peak + 1, &burst, 10, &rate->peak) < 0)
+ return -1;
+ }
+
+ if (burst) {
+ if (virStrToLong_ull(burst + 1, NULL, 10, &rate->burst) < 0)
+ return -1;
+ }
+ }
+
+
+ return 0;
+}
+
static bool
cmdAttachInterface(vshControl *ctl, const vshCmd *cmd)
{
virDomainPtr dom = NULL;
const char *mac = NULL, *target = NULL, *script = NULL,
- *type = NULL, *source = NULL, *model = NULL;
+ *type = NULL, *source = NULL, *model = NULL,
+ *inboundStr = NULL, *outboundStr = NULL;
+ virRate inbound, outbound;
int typ;
int ret;
bool functionReturn = false;
@@ -11254,7 +11289,9 @@ cmdAttachInterface(vshControl *ctl, const vshCmd *cmd)
vshCommandOptString(cmd, "target", &target) < 0 ||
vshCommandOptString(cmd, "mac", &mac) < 0 ||
vshCommandOptString(cmd, "script", &script) < 0 ||
- vshCommandOptString(cmd, "model", &model) < 0) {
+ vshCommandOptString(cmd, "model", &model) < 0 ||
+ vshCommandOptString(cmd, "inbound", &inboundStr) < 0 ||
+ vshCommandOptString(cmd, "outbound", &outboundStr) < 0) {
vshError(ctl, "missing argument");
goto cleanup;
}
@@ -11270,6 +11307,29 @@ cmdAttachInterface(vshControl *ctl, const vshCmd *cmd)
goto cleanup;
}
+ if (inboundStr) {
+ memset(&inbound, 0, sizeof(inbound));
+ if (parseRateStr(inboundStr, &inbound) < 0) {
+ vshError(ctl, _("inbound format is incorrect"));
+ goto cleanup;
+ }
+ if (inbound.average == 0) {
+ vshError(ctl, _("inbound average is mandatory"));
+ goto cleanup;
+ }
+ }
+ if (outboundStr) {
+ memset(&outbound, 0, sizeof(outbound));
+ if (parseRateStr(outboundStr, &outbound) < 0) {
+ vshError(ctl, _("outbound format is incorrect"));
+ goto cleanup;
+ }
+ if (outbound.average == 0) {
+ vshError(ctl, _("outbound average is mandatory"));
+ goto cleanup;
+ }
+ }
+
/* Make XML of interface */
virBufferAsprintf(&buf, "<interface type='%s'>\n", type);
@@ -11287,6 +11347,38 @@ cmdAttachInterface(vshControl *ctl, const vshCmd *cmd)
if (model != NULL)
virBufferAsprintf(&buf, " <model type='%s'/>\n", model);
+ if (inboundStr || outboundStr) {
+ virBufferAsprintf(&buf, " <bandwidth>\n");
+ if (inboundStr && inbound.average > 0) {
+ if (inbound.peak > 0 && inbound.burst > 0)
+ virBufferAsprintf(&buf, " <inbound average='%lld' peak='%lld' burst='%lld'/>\n",
+ inbound.average, inbound.peak, inbound.burst);
+ else if (inbound.peak > 0)
+ virBufferAsprintf(&buf, " <inbound average='%lld' peak='%lld'/>\n",
+ inbound.average, inbound.peak);
+ else if (inbound.burst > 0)
+ virBufferAsprintf(&buf, " <inbound average='%lld' burst='%lld'/>\n",
+ inbound.average, inbound.burst);
+ else
+ virBufferAsprintf(&buf, " <inbound average='%lld'/>\n", inbound.average);
+ }
+ if (outboundStr && outbound.average > 0) {
+ if (outbound.peak > 0 && outbound.burst > 0)
+ virBufferAsprintf(&buf, " <outbound average='%lld' peak='%lld' burst='%lld'/>\n",
+ outbound.average, outbound.peak, outbound.burst);
+ else if (outbound.peak > 0)
+ virBufferAsprintf(&buf, " <outbound average='%lld' peak='%lld'/>\n",
+ outbound.average, outbound.peak);
+ else if (outbound.burst > 0)
+ virBufferAsprintf(&buf, " <outbound average='%lld' burst='%lld'/>\n",
+ outbound.average, outbound.burst);
+ else
+ virBufferAsprintf(&buf, " <outbound average='%lld'/>\n", outbound.average);
+
+ }
+ virBufferAsprintf(&buf, " </bandwidth>\n");
+ }
+
virBufferAddLit(&buf, "</interface>\n");
if (virBufferError(&buf)) {
diff --git a/tools/virsh.pod b/tools/virsh.pod
index d0b7937..06dc06a 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -1235,7 +1235,7 @@ scsi:controller.bus.unit or ide:controller.bus.unit.
=item B<attach-interface> I<domain-id> I<type> I<source>
[I<--target target>] [I<--mac mac>] [I<--script script>] [I<--model model>]
-[I<--persistent>]
+[I<--persistent>] [I<--inbound average,peak,burst>] [I<--outbound average,peak,burst>]
Attach a new network interface to the domain.
I<type> can be either I<network> to indicate a physical network device or I<bridge> to indicate a bridge to a device.
@@ -1246,6 +1246,9 @@ I<script> allows to specify a path to a script handling a bridge instead of
the default one.
I<model> allows to specify the model type.
I<persistent> indicates the changes will affect the next boot of the domain.
+I<inbound> and I<outbound> control the bandwidth of the interface. I<peak>
+and I<burst> are optional, so "average,peak", "average,,burst" and
+"average" are also legal.
B<Note>: the optional target value is the name of a device to be created
as the back-end on the node. If not provided a device named "vnetN" or "vifN"
--
1.7.3.1
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