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/*
* Copyright (C) 2009-2012 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/>.
*
* Authors:
* Laine Stump <laine@redhat.com>
*/
#include <config.h>
#include "netdev_vlan_conf.h"
#include "virterror_internal.h"
#include "memory.h"
#define VIR_FROM_THIS VIR_FROM_NONE
int
virNetDevVlanParse(xmlNodePtr node, xmlXPathContextPtr ctxt, virNetDevVlanPtr def)
{
int ret = -1;
xmlNodePtr save = ctxt->node;
const char *trunk;
xmlNodePtr *tagNodes = NULL;
int nTags, ii;
ctxt->node = node;
nTags = virXPathNodeSet("./tag", ctxt, &tagNodes);
if (nTags < 0)
goto error;
if (nTags == 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing tag id - each <vlan> must have "
"at least one <tag id='n'/> subelement"));
goto error;
}
if (VIR_ALLOC_N(def->tag, nTags) < 0) {
virReportOOMError();
goto error;
}
for (ii = 0; ii < nTags; ii++) {
unsigned long id;
ctxt->node = tagNodes[ii];
if (virXPathULong("string(./@id)", ctxt, &id) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing or invalid vlan tag id attribute"));
goto error;
}
if (id > 4095) {
virReportError(VIR_ERR_XML_ERROR,
_("vlan tag id %lu too large (maximum 4095)"), id);
goto error;
}
def->tag[ii] = id;
}
def->nTags = nTags;
/* now that we know how many tags there are, look for an explicit
* trunk setting.
*/
if (nTags > 1)
def->trunk = true;
ctxt->node = node;
if ((trunk = virXPathString("string(./@trunk)", ctxt)) != NULL) {
def->trunk = STRCASEEQ(trunk, "yes");
if (!def->trunk) {
if (nTags > 1) {
virReportError(VIR_ERR_XML_ERROR,
_("invalid \"trunk='%s'\" in <vlan> - trunk='yes' "
"is required for more than one vlan tag"), trunk);
goto error;
}
/* allow (but discard) "trunk='no' if there is a single tag */
if (STRCASENEQ(trunk, "no")) {
virReportError(VIR_ERR_XML_ERROR,
_("invalid \"trunk='%s'\" in <vlan> "
"- must be yes or no"), trunk);
goto error;
}
}
}
ret = 0;
error:
ctxt->node = save;
VIR_FREE(tagNodes);
if (ret < 0)
virNetDevVlanClear(def);
return ret;
}
int
virNetDevVlanFormat(virNetDevVlanPtr def, virBufferPtr buf)
{
int ii;
if (def->nTags == 0)
return 0;
if (!def->tag) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing vlan tag data"));
return -1;
}
virBufferAsprintf(buf, "<vlan%s>\n", def->trunk ? " trunk='yes'" : "");
for (ii = 0; ii < def->nTags; ii++) {
virBufferAsprintf(buf, " <tag id='%u'/>\n", def->tag[ii]);
}
virBufferAddLit(buf, "</vlan>\n");
return 0;
}
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