[libvirt] [PATCHv4] Configure native vlan modes on Open vSwitch ports
james robson
jrobson at websense.com
Mon Jun 17 17:56:15 UTC 2013
Are there any comments on this iteration?
On Thu, 2013-05-23 at 18:12 +0100, james robson wrote:
> This patch adds functionality to allow libvirt to configure the
> 'native-tagged' and 'native-untagged' modes on openvswitch networks.
>
> v2 changes:
> Fix problems reported by Eric Blake
>
> v3 changes:
> Re work patch to address review comments
>
> v4 changes:
> Use enum for native modes
>
> ---
>
> diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
> index 9284534..ba32185 100644
> --- a/docs/formatdomain.html.in
> +++ b/docs/formatdomain.html.in
> @@ -3498,6 +3498,13 @@ qemu-kvm -net nic,model=? /dev/null
> <parameters interfaceid='09b11c53-8b5c-4eeb-8f00-d84eaa0aaa4f'/>
> </virtualport>
> </interface>
> + <interface type='bridge'>
> + <b><vlan trunk='yes'></b>
> + <b><tag id='42'/></b>
> + <b><tag id='123' nativeMode='untagged'/></b>
> + <b></vlan></b>
> + ...
> + </interface>
> <devices>
> ...</pre>
>
> @@ -3524,6 +3531,15 @@ qemu-kvm -net nic,model=? /dev/null
> vlan element.
> </p>
>
> + <p>
> + For network connections using openvswitch it is possible to
> + configure the 'native-tagged' and 'native-untagged' vlan modes
> + <span class="since">(Since 1.0.5).</span> This uses the optional
> + <code>nativeMode</code> attribute on the <code><tag></code>
> + element: <code>nativeMode</code> may be set to 'tagged' or
> + 'untagged'. The id atribute of the element sets the native vlan.
> + </p>
> +
> <h5><a name="elementLink">Modifying virtual link state</a></h5>
> <pre>
> ...
> diff --git a/docs/formatnetwork.html.in b/docs/formatnetwork.html.in
> index a1198ce..29e12d9 100644
> --- a/docs/formatnetwork.html.in
> +++ b/docs/formatnetwork.html.in
> @@ -446,6 +446,13 @@
> <parameters interfaceid='09b11c53-8b5c-4eeb-8f00-d84eaa0aaa4f'/>
> </virtualport>
> </interface>
> + <interface type='bridge'>
> + <b><vlan trunk='yes'></b>
> + <b><tag id='42'/></b>
> + <b><tag id='123' nativeMode='untagged'/></b>
> + <b></vlan></b>
> + ...
> + </interface>
> <devices>
> ...</pre>
>
> @@ -469,6 +476,14 @@
> be added to the vlan element.
> </p>
> <p>
> + For network connections using openvswitch it is possible to
> + configure the 'native-tagged' and 'native-untagged' vlan modes
> + <span class="since">(Since 1.0.6).</span> This uses the optional
> + <code>nativeMode</code> attribute on the <code><tag></code>
> + element: <code>nativeMode</code> may be set to 'tagged' or
> + 'untagged'. The id atribute of the element sets the native vlan.
> + </p>
> + <p>
> <code><vlan></code> elements can also be specified in
> a <code><portgroup></code> element, as well as directly in
> a domain's <code><interface></code> element. In the case
> diff --git a/docs/schemas/networkcommon.rng b/docs/schemas/networkcommon.rng
> index 51ff759..e60f1fc 100644
> --- a/docs/schemas/networkcommon.rng
> +++ b/docs/schemas/networkcommon.rng
> @@ -204,6 +204,14 @@
> <param name="maxInclusive">4095</param>
> </data>
> </attribute>
> + <optional>
> + <attribute name="nativeMode">
> + <choice>
> + <value>tagged</value>
> + <value>untagged</value>
> + </choice>
> + </attribute>
> + </optional>
> <empty/>
> </element>
> </oneOrMore>
> diff --git a/src/conf/netdev_vlan_conf.c b/src/conf/netdev_vlan_conf.c
> index 13ba8c6..2b4cd48 100644
> --- a/src/conf/netdev_vlan_conf.c
> +++ b/src/conf/netdev_vlan_conf.c
> @@ -17,6 +17,7 @@
> *
> * Authors:
> * Laine Stump <laine at redhat.com>
> + * James Robson <jrobson at websense.com>
> */
>
> #include <config.h>
> @@ -27,12 +28,15 @@
>
> #define VIR_FROM_THIS VIR_FROM_NONE
>
> +VIR_ENUM_IMPL(virNativeVlanMode, VIR_NATIVE_VLAN_MODE_LAST, "default", "tagged", "untagged")
> +
> int
> virNetDevVlanParse(xmlNodePtr node, xmlXPathContextPtr ctxt, virNetDevVlanPtr def)
> {
> int ret = -1;
> xmlNodePtr save = ctxt->node;
> const char *trunk = NULL;
> + const char *nativeMode = NULL;
> xmlNodePtr *tagNodes = NULL;
> int nTags, ii;
>
> @@ -54,6 +58,8 @@ virNetDevVlanParse(xmlNodePtr node, xmlXPathContextPtr ctxt, virNetDevVlanPtr de
> goto error;
> }
>
> + def->nativeMode = 0;
> + def->nativeTag = 0;
> for (ii = 0; ii < nTags; ii++) {
> unsigned long id;
>
> @@ -68,6 +74,19 @@ virNetDevVlanParse(xmlNodePtr node, xmlXPathContextPtr ctxt, virNetDevVlanPtr de
> _("vlan tag id %lu too large (maximum 4095)"), id);
> goto error;
> }
> + if ((nativeMode = virXPathString("string(./@nativeMode)", ctxt)) != NULL) {
> + if (def->nativeMode != 0) {
> + virReportError(VIR_ERR_XML_ERROR, "%s",
> + _("duplicate native vlan setting"));
> + goto error;
> + }
> + if ((def->nativeMode = virNativeVlanModeTypeFromString(nativeMode)) <= 0) {
> + virReportError(VIR_ERR_XML_ERROR,
> + _("Attribute \"nativeMode='%s'\" is invalid"), nativeMode);
> + goto error;
> + }
> + def->nativeTag = id;
> + }
> def->tag[ii] = id;
> }
>
> @@ -89,6 +108,12 @@ virNetDevVlanParse(xmlNodePtr node, xmlXPathContextPtr ctxt, virNetDevVlanPtr de
> "is required for more than one vlan tag"), trunk);
> goto error;
> }
> + if (def->nativeMode != 0) {
> + virReportError(VIR_ERR_XML_ERROR, "%s",
> + _("invalid configuration in <vlan> - \"trunk='no'\" is "
> + "not allowed with a native vlan id"));
> + goto error;
> + }
> /* allow (but discard) "trunk='no' if there is a single tag */
> if (STRCASENEQ(trunk, "no")) {
> virReportError(VIR_ERR_XML_ERROR,
> @@ -125,7 +150,17 @@ virNetDevVlanFormat(virNetDevVlanPtr def, virBufferPtr buf)
>
> 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]);
> + if (def->nativeMode != VIR_NATIVE_VLAN_MODE_DEFAULT && def->nativeTag == def->tag[ii]) {
> + /* check the nativeMode in case we get <tag id='0'/>*/
> + const char *mode = virNativeVlanModeTypeToString(def->nativeMode);
> + if (!mode) {
> + virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("Bad vlaue for nativeMode"));
> + }
> + virBufferAsprintf(buf, " <tag id='%u' nativeMode='%s'/>\n", def->tag[ii], mode);
> + } else {
> + virBufferAsprintf(buf, " <tag id='%u'/>\n", def->tag[ii]);
> + }
> }
> virBufferAddLit(buf, "</vlan>\n");
> return 0;
> diff --git a/src/util/virnetdevopenvswitch.c b/src/util/virnetdevopenvswitch.c
> index 2aee445..47e6027 100644
> --- a/src/util/virnetdevopenvswitch.c
> +++ b/src/util/virnetdevopenvswitch.c
> @@ -109,8 +109,22 @@ int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
> virCommandAddArgList(cmd, "--timeout=5", "--", "--may-exist", "add-port",
> brname, ifname, NULL);
>
> - if (virBufferUse(&buf) != 0)
> + if (virBufferUse(&buf) != 0) {
> + switch (virtVlan->nativeMode) {
> + case VIR_NATIVE_VLAN_MODE_TAGGED:
> + virCommandAddArg(cmd, "vlan_mode=native-tagged");
> + virCommandAddArgFormat(cmd, "tag=%d", virtVlan->nativeTag);
> + break;
> + case VIR_NATIVE_VLAN_MODE_UNTAGGED:
> + virCommandAddArg(cmd, "vlan_mode=native-untagged");
> + virCommandAddArgFormat(cmd, "tag=%d", virtVlan->nativeTag);
> + break;
> + case VIR_NATIVE_VLAN_MODE_DEFAULT:
> + default:
> + break;
> + }
> virCommandAddArgList(cmd, virBufferCurrentContent(&buf), NULL);
> + }
>
> if (ovsport->profileID[0] == '\0') {
> virCommandAddArgList(cmd,
> diff --git a/src/util/virnetdevvlan.c b/src/util/virnetdevvlan.c
> index 2fe2017..eed32f7 100644
> --- a/src/util/virnetdevvlan.c
> +++ b/src/util/virnetdevvlan.c
> @@ -33,6 +33,8 @@ virNetDevVlanClear(virNetDevVlanPtr vlan)
> {
> VIR_FREE(vlan->tag);
> vlan->nTags = 0;
> + vlan->nativeMode = 0;
> + vlan->nativeTag = 0;
> }
>
> void
> @@ -54,7 +56,9 @@ virNetDevVlanEqual(const virNetDevVlanPtr a, const virNetDevVlanPtr b)
> return false;
>
> if (a->trunk != b->trunk ||
> - a->nTags != b->nTags) {
> + a->nTags != b->nTags ||
> + a->nativeMode != b->nativeMode ||
> + a->nativeTag != b->nativeTag) {
> return false;
> }
>
> @@ -89,6 +93,8 @@ virNetDevVlanCopy(virNetDevVlanPtr dst, const virNetDevVlanPtr src)
>
> dst->trunk = src->trunk;
> dst->nTags = src->nTags;
> + dst->nativeMode = src->nativeMode;
> + dst->nativeTag = src->nativeTag;
> memcpy(dst->tag, src->tag, src->nTags * sizeof(*src->tag));
> return 0;
> }
> diff --git a/src/util/virnetdevvlan.h b/src/util/virnetdevvlan.h
> index c6b16ef..a084938 100644
> --- a/src/util/virnetdevvlan.h
> +++ b/src/util/virnetdevvlan.h
> @@ -18,16 +18,28 @@
> * Authors:
> * Laine Stump <laine at redhat.com>
> */
> -
> +# include <virutil.h>
> #ifndef __VIR_NETDEV_VLAN_H__
> # define __VIR_NETDEV_VLAN_H__
>
> +typedef enum {
> + VIR_NATIVE_VLAN_MODE_DEFAULT = 0,
> + VIR_NATIVE_VLAN_MODE_TAGGED,
> + VIR_NATIVE_VLAN_MODE_UNTAGGED,
> +
> + VIR_NATIVE_VLAN_MODE_LAST
> +} virNativeVlanMode;
> +
> +VIR_ENUM_DECL(virNativeVlanMode)
> +
> typedef struct _virNetDevVlan virNetDevVlan;
> typedef virNetDevVlan *virNetDevVlanPtr;
> struct _virNetDevVlan {
> bool trunk; /* true if this is a trunk */
> int nTags; /* number of tags in array */
> unsigned int *tag; /* pointer to array of tags */
> + int nativeMode;
> + unsigned int nativeTag;
> };
>
> void virNetDevVlanClear(virNetDevVlanPtr vlan);
> diff --git a/tests/networkxml2xmlin/openvswitch-net.xml b/tests/networkxml2xmlin/openvswitch-net.xml
> index a3d82b1..2f6084d 100644
> --- a/tests/networkxml2xmlin/openvswitch-net.xml
> +++ b/tests/networkxml2xmlin/openvswitch-net.xml
> @@ -21,4 +21,13 @@
> <parameters profileid='alice-profile'/>
> </virtualport>
> </portgroup>
> + <portgroup name='native'>
> + <vlan trunk='yes'>
> + <tag id='123' nativeMode='tagged'/>
> + <tag id='444'/>
> + </vlan>
> + <virtualport>
> + <parameters profileid='native-profile'/>
> + </virtualport>
> + </portgroup>
> </network>
> diff --git a/tests/networkxml2xmlout/openvswitch-net.xml b/tests/networkxml2xmlout/openvswitch-net.xml
> index a3d82b1..2f6084d 100644
> --- a/tests/networkxml2xmlout/openvswitch-net.xml
> +++ b/tests/networkxml2xmlout/openvswitch-net.xml
> @@ -21,4 +21,13 @@
> <parameters profileid='alice-profile'/>
> </virtualport>
> </portgroup>
> + <portgroup name='native'>
> + <vlan trunk='yes'>
> + <tag id='123' nativeMode='tagged'/>
> + <tag id='444'/>
> + </vlan>
> + <virtualport>
> + <parameters profileid='native-profile'/>
> + </virtualport>
> + </portgroup>
> </network>
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