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virnetdevopenvswitch: Move OVS VLAN configuration to a separate function

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This piece of code is going to be reused. So move it out to a
separate function.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Antoine Millet 2017-07-17 17:48:59 +02:00 committed by Michal Privoznik
parent efdfd1c5bf
commit 695611f99e
1 changed files with 65 additions and 42 deletions
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107
src/util/virnetdevopenvswitch.c
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@ -63,6 +63,69 @@ virNetDevOpenvswitchAddTimeout(virCommandPtr cmd)
virCommandAddArgFormat(cmd, "--timeout=%u", virNetDevOpenvswitchTimeout);
}
/**
* virNetDevOpenvswitchConstructVlans:
* @cmd: command to construct
* @virtVlan: VLAN configuration to be applied
*
* Construct the VLAN configuration parameters to be passed to
* ovs-vsctl command.
*
* Returns 0 in case of success or -1 in case of failure.
*/
static int
virNetDevOpenvswitchConstructVlans(virCommandPtr cmd, virNetDevVlanPtr virtVlan)
{
int ret = -1;
size_t i = 0;
virBuffer buf = VIR_BUFFER_INITIALIZER;
if (!virtVlan || !virtVlan->nTags)
return 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;
}
if (virtVlan->trunk) {
virBufferAddLit(&buf, "trunk=");
/*
* Trunk ports have at least one VLAN. Do the first one
* outside the "for" loop so we can put a "," at the
* start of the for loop if there are more than one VLANs
* on this trunk port.
*/
virBufferAsprintf(&buf, "%d", virtVlan->tag[i]);
for (i = 1; i < virtVlan->nTags; i++) {
virBufferAddLit(&buf, ",");
virBufferAsprintf(&buf, "%d", virtVlan->tag[i]);
}
if (virBufferCheckError(&buf) < 0)
goto cleanup;
virCommandAddArg(cmd, virBufferCurrentContent(&buf));
} else if (virtVlan->nTags) {
virCommandAddArgFormat(cmd, "tag=%d", virtVlan->tag[0]);
}
ret = 0;
cleanup:
virBufferFreeAndReset(&buf);
return ret;
}
/**
* virNetDevOpenvswitchAddPort:
* @brname: the bridge name
@ -82,7 +145,6 @@ int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
virNetDevVlanPtr virtVlan)
{
int ret = -1;
size_t i = 0;
virCommandPtr cmd = NULL;
char macaddrstr[VIR_MAC_STRING_BUFLEN];
char ifuuidstr[VIR_UUID_STRING_BUFLEN];
@ -91,7 +153,6 @@ int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
char *ifaceid_ex_id = NULL;
char *profile_ex_id = NULL;
char *vmid_ex_id = NULL;
virBuffer buf = VIR_BUFFER_INITIALIZER;
virMacAddrFormat(macaddr, macaddrstr);
virUUIDFormat(ovsport->interfaceID, ifuuidstr);
@ -117,45 +178,8 @@ int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
virCommandAddArgList(cmd, "--", "--if-exists", "del-port",
ifname, "--", "add-port", brname, ifname, NULL);
if (virtVlan && virtVlan->nTags > 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;
}
if (virtVlan->trunk) {
virBufferAddLit(&buf, "trunk=");
/*
* Trunk ports have at least one VLAN. Do the first one
* outside the "for" loop so we can put a "," at the
* start of the for loop if there are more than one VLANs
* on this trunk port.
*/
virBufferAsprintf(&buf, "%d", virtVlan->tag[i]);
for (i = 1; i < virtVlan->nTags; i++) {
virBufferAddLit(&buf, ",");
virBufferAsprintf(&buf, "%d", virtVlan->tag[i]);
}
if (virBufferCheckError(&buf) < 0)
goto cleanup;
virCommandAddArg(cmd, virBufferCurrentContent(&buf));
} else if (virtVlan->nTags) {
virCommandAddArgFormat(cmd, "tag=%d", virtVlan->tag[0]);
}
}
if (virNetDevOpenvswitchConstructVlans(cmd, virtVlan) < 0)
goto cleanup;
if (ovsport->profileID[0] == '\0') {
virCommandAddArgList(cmd,
@ -185,7 +209,6 @@ int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
ret = 0;
cleanup:
virBufferFreeAndReset(&buf);
VIR_FREE(attachedmac_ex_id);
VIR_FREE(ifaceid_ex_id);
VIR_FREE(vmid_ex_id);