[libvirt] [PATCH] replace 'if' type conditions with 'switch' for VIR_NETWORK_FORWARD_*
Shi Lei
shilei.massclouds at gmx.com
Fri Jul 20 04:00:53 UTC 2018
Hi, everyone!
For VIR_NETWORK_FORWARD_*, I try to replace 'if' type conditions
with typed 'switch()'.
It might be more clear.
Signed-off-by: Shi Lei <shilei.massclouds at gmx.com>
---
src/conf/domain_conf.c | 46 +++++-----
src/conf/network_conf.c | 49 ++++++-----
src/conf/virnetworkobj.c | 15 ++--
src/esx/esx_network_driver.c | 8 +-
src/network/bridge_driver.c | 203 +++++++++++++++++++++++--------------------
5 files changed, 178 insertions(+), 143 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 178c6d2..c02543f 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -29975,40 +29975,44 @@ virDomainNetResolveActualType(virDomainNetDefPtr iface)
if (!(def = virNetworkDefParseString(xml)))
goto cleanup;
- if ((def->forward.type == VIR_NETWORK_FORWARD_NONE) ||
- (def->forward.type == VIR_NETWORK_FORWARD_NAT) ||
- (def->forward.type == VIR_NETWORK_FORWARD_ROUTE) ||
- (def->forward.type == VIR_NETWORK_FORWARD_OPEN)) {
+ switch (def->forward.type) {
+ case VIR_NETWORK_FORWARD_NONE:
+ case VIR_NETWORK_FORWARD_NAT:
+ case VIR_NETWORK_FORWARD_ROUTE:
+ case VIR_NETWORK_FORWARD_OPEN:
/* for these forward types, the actual net type really *is*
* NETWORK; we just keep the info from the portgroup in
* iface->data.network.actual
*/
ret = VIR_DOMAIN_NET_TYPE_NETWORK;
+ break;
- } else if ((def->forward.type == VIR_NETWORK_FORWARD_BRIDGE) &&
- def->bridge) {
-
- /* <forward type='bridge'/> <bridge name='xxx'/>
- * is VIR_DOMAIN_NET_TYPE_BRIDGE
- */
-
- ret = VIR_DOMAIN_NET_TYPE_BRIDGE;
-
- } else if (def->forward.type == VIR_NETWORK_FORWARD_HOSTDEV) {
-
+ case VIR_NETWORK_FORWARD_HOSTDEV:
ret = VIR_DOMAIN_NET_TYPE_HOSTDEV;
+ break;
+
+ case VIR_NETWORK_FORWARD_BRIDGE:
+ if (def->bridge) {
+ /* <forward type='bridge'/> <bridge name='xxx'/>
+ * is VIR_DOMAIN_NET_TYPE_BRIDGE
+ */
+ ret = VIR_DOMAIN_NET_TYPE_BRIDGE;
+ break;
+ }
- } else if ((def->forward.type == VIR_NETWORK_FORWARD_BRIDGE) ||
- (def->forward.type == VIR_NETWORK_FORWARD_PRIVATE) ||
- (def->forward.type == VIR_NETWORK_FORWARD_VEPA) ||
- (def->forward.type == VIR_NETWORK_FORWARD_PASSTHROUGH)) {
+ /* intentionally fall through to the direct case for
+ * VIR_NETWORK_FORWARD_BRIDGE with no bridge device defined
+ */
+ ATTRIBUTE_FALLTHROUGH;
+ case VIR_NETWORK_FORWARD_PRIVATE:
+ case VIR_NETWORK_FORWARD_VEPA:
+ case VIR_NETWORK_FORWARD_PASSTHROUGH:
/* <forward type='bridge|private|vepa|passthrough'> are all
* VIR_DOMAIN_NET_TYPE_DIRECT.
*/
-
ret = VIR_DOMAIN_NET_TYPE_DIRECT;
-
+ break;
}
cleanup:
diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c
index 630a87f..bafc1d3 100644
--- a/src/conf/network_conf.c
+++ b/src/conf/network_conf.c
@@ -1959,17 +1959,22 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt)
VIR_FREE(stp);
- if (def->mtu &&
- (def->forward.type != VIR_NETWORK_FORWARD_NONE &&
- def->forward.type != VIR_NETWORK_FORWARD_NAT &&
- def->forward.type != VIR_NETWORK_FORWARD_ROUTE &&
- def->forward.type != VIR_NETWORK_FORWARD_OPEN)) {
- virReportError(VIR_ERR_XML_ERROR,
- _("mtu size only allowed in open, route, nat, "
- "and isolated mode, not in %s (network '%s')"),
- virNetworkForwardTypeToString(def->forward.type),
- def->name);
- goto error;
+ if (def->mtu) {
+ switch (def->forward.type) {
+ case VIR_NETWORK_FORWARD_NONE:
+ case VIR_NETWORK_FORWARD_NAT:
+ case VIR_NETWORK_FORWARD_ROUTE:
+ case VIR_NETWORK_FORWARD_OPEN:
+ break;
+
+ default:
+ virReportError(VIR_ERR_XML_ERROR,
+ _("mtu size only allowed in open, route, nat, "
+ "and isolated mode, not in %s (network '%s')"),
+ virNetworkForwardTypeToString(def->forward.type),
+ def->name);
+ goto error;
+ }
}
/* Extract custom metadata */
@@ -2349,6 +2354,7 @@ virNetworkDefFormatBuf(virBufferPtr buf,
char uuidstr[VIR_UUID_STRING_BUFLEN];
size_t i;
bool shortforward;
+ bool hasbridge = false;
virBufferAddLit(buf, "<network");
if (!(flags & VIR_NETWORK_XML_INACTIVE) && (def->connections > 0))
@@ -2469,22 +2475,21 @@ virNetworkDefFormatBuf(virBufferPtr buf,
virBufferAddLit(buf, "</forward>\n");
}
+ switch (def->forward.type) {
+ case VIR_NETWORK_FORWARD_NONE:
+ case VIR_NETWORK_FORWARD_NAT:
+ case VIR_NETWORK_FORWARD_ROUTE:
+ case VIR_NETWORK_FORWARD_OPEN:
+ hasbridge = true;
+ break;
+ }
- if (def->forward.type == VIR_NETWORK_FORWARD_NONE ||
- def->forward.type == VIR_NETWORK_FORWARD_NAT ||
- def->forward.type == VIR_NETWORK_FORWARD_ROUTE ||
- def->forward.type == VIR_NETWORK_FORWARD_OPEN ||
- def->bridge || def->macTableManager) {
-
+ if (hasbridge || def->bridge || def->macTableManager) {
virBufferAddLit(buf, "<bridge");
virBufferEscapeString(buf, " name='%s'", def->bridge);
- if (def->forward.type == VIR_NETWORK_FORWARD_NONE ||
- def->forward.type == VIR_NETWORK_FORWARD_NAT ||
- def->forward.type == VIR_NETWORK_FORWARD_ROUTE ||
- def->forward.type == VIR_NETWORK_FORWARD_OPEN) {
+ if (hasbridge)
virBufferAsprintf(buf, " stp='%s' delay='%ld'",
def->stp ? "on" : "off", def->delay);
- }
if (def->macTableManager) {
virBufferAsprintf(buf, " macTableManager='%s'",
virNetworkBridgeMACTableManagerTypeToString(def->macTableManager));
diff --git a/src/conf/virnetworkobj.c b/src/conf/virnetworkobj.c
index e00c8a7..7706817 100644
--- a/src/conf/virnetworkobj.c
+++ b/src/conf/virnetworkobj.c
@@ -1009,19 +1009,22 @@ virNetworkLoadConfig(virNetworkObjListPtr nets,
goto error;
}
- if (def->forward.type == VIR_NETWORK_FORWARD_NONE ||
- def->forward.type == VIR_NETWORK_FORWARD_NAT ||
- def->forward.type == VIR_NETWORK_FORWARD_ROUTE ||
- def->forward.type == VIR_NETWORK_FORWARD_OPEN) {
-
+ switch (def->forward.type) {
+ case VIR_NETWORK_FORWARD_NONE:
+ case VIR_NETWORK_FORWARD_NAT:
+ case VIR_NETWORK_FORWARD_ROUTE:
+ case VIR_NETWORK_FORWARD_OPEN:
if (!def->mac_specified) {
virNetworkSetBridgeMacAddr(def);
virNetworkSaveConfig(configDir, def);
}
- } else {
+ break;
+
+ default:
/* Throw away MAC address for other forward types,
* which could have been generated by older libvirt RPMs */
def->mac_specified = false;
+ break;
}
if (!(obj = virNetworkObjAssignDef(nets, def, 0)))
diff --git a/src/esx/esx_network_driver.c b/src/esx/esx_network_driver.c
index 04118b4..8ea1079 100644
--- a/src/esx/esx_network_driver.c
+++ b/src/esx/esx_network_driver.c
@@ -326,8 +326,12 @@ esxNetworkDefineXML(virConnectPtr conn, const char *xml)
}
/* FIXME: Add support for NAT */
- if (def->forward.type != VIR_NETWORK_FORWARD_NONE &&
- def->forward.type != VIR_NETWORK_FORWARD_BRIDGE) {
+ switch (def->forward.type) {
+ case VIR_NETWORK_FORWARD_NONE:
+ case VIR_NETWORK_FORWARD_BRIDGE:
+ break;
+
+ default:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Unsupported forward mode '%s'"),
virNetworkForwardTypeToString(def->forward.type));
diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
index da3c32e..5e885b5 100644
--- a/src/network/bridge_driver.c
+++ b/src/network/bridge_driver.c
@@ -2088,19 +2088,22 @@ networkRefreshDaemonsHelper(virNetworkObjPtr obj,
virObjectLock(obj);
def = virNetworkObjGetDef(obj);
- if (virNetworkObjIsActive(obj) &&
- ((def->forward.type == VIR_NETWORK_FORWARD_NONE) ||
- (def->forward.type == VIR_NETWORK_FORWARD_NAT) ||
- (def->forward.type == VIR_NETWORK_FORWARD_ROUTE) ||
- (def->forward.type == VIR_NETWORK_FORWARD_OPEN))) {
- /* Only the three L3 network types that are configured by
- * libvirt will have a dnsmasq or radvd daemon associated
- * with them. Here we send a SIGHUP to an existing
- * dnsmasq and/or radvd, or restart them if they've
- * disappeared.
- */
- networkRefreshDhcpDaemon(driver, obj);
- networkRefreshRadvd(driver, obj);
+ if (virNetworkObjIsActive(obj)) {
+ switch (def->forward.type) {
+ case VIR_NETWORK_FORWARD_NONE:
+ case VIR_NETWORK_FORWARD_NAT:
+ case VIR_NETWORK_FORWARD_ROUTE:
+ case VIR_NETWORK_FORWARD_OPEN:
+ /* Only the three L3 network types that are configured by
+ * libvirt will have a dnsmasq or radvd daemon associated
+ * with them. Here we send a SIGHUP to an existing
+ * dnsmasq and/or radvd, or restart them if they've
+ * disappeared.
+ */
+ networkRefreshDhcpDaemon(driver, obj);
+ networkRefreshRadvd(driver, obj);
+ break;
+ }
}
virObjectUnlock(obj);
return 0;
@@ -2128,18 +2131,21 @@ networkReloadFirewallRulesHelper(virNetworkObjPtr obj,
virObjectLock(obj);
def = virNetworkObjGetDef(obj);
- if (virNetworkObjIsActive(obj) &&
- ((def->forward.type == VIR_NETWORK_FORWARD_NONE) ||
- (def->forward.type == VIR_NETWORK_FORWARD_NAT) ||
- (def->forward.type == VIR_NETWORK_FORWARD_ROUTE))) {
- /* Only three of the L3 network types that are configured by
- * libvirt need to have iptables rules reloaded. The 4th L3
- * network type, forward='open', doesn't need this because it
- * has no iptables rules.
- */
- networkRemoveFirewallRules(def);
- if (networkAddFirewallRules(def) < 0) {
- /* failed to add but already logged */
+ if (virNetworkObjIsActive(obj)) {
+ switch (def->forward.type) {
+ case VIR_NETWORK_FORWARD_NONE:
+ case VIR_NETWORK_FORWARD_NAT:
+ case VIR_NETWORK_FORWARD_ROUTE:
+ /* Only three of the L3 network types that are configured by
+ * libvirt need to have iptables rules reloaded. The 4th L3
+ * network type, forward='open', doesn't need this because it
+ * has no iptables rules.
+ */
+ networkRemoveFirewallRules(def);
+ if (networkAddFirewallRules(def) < 0) {
+ /* failed to add but already logged */
+ }
+ break;
}
}
virObjectUnlock(obj);
@@ -3273,11 +3279,11 @@ networkValidate(virNetworkDriverStatePtr driver,
/* Only the three L3 network types that are configured by libvirt
* need to have a bridge device name / mac address provided
*/
- if (def->forward.type == VIR_NETWORK_FORWARD_NONE ||
- def->forward.type == VIR_NETWORK_FORWARD_NAT ||
- def->forward.type == VIR_NETWORK_FORWARD_ROUTE ||
- def->forward.type == VIR_NETWORK_FORWARD_OPEN) {
-
+ switch (def->forward.type) {
+ case VIR_NETWORK_FORWARD_NONE:
+ case VIR_NETWORK_FORWARD_NAT:
+ case VIR_NETWORK_FORWARD_ROUTE:
+ case VIR_NETWORK_FORWARD_OPEN:
/* if no bridge name was given in the config, find a name
* unused by any other libvirt networks and assign it.
*/
@@ -3285,7 +3291,9 @@ networkValidate(virNetworkDriverStatePtr driver,
return -1;
virNetworkSetBridgeMacAddr(def);
- } else {
+ break;
+
+ default:
/* They are also the only types that currently support setting
* a MAC or IP address for the host-side device (bridge), DNS
* configuration, or network-wide bandwidth limits.
@@ -3331,6 +3339,7 @@ networkValidate(virNetworkDriverStatePtr driver,
return -1;
}
bandwidthAllowed = false;
+ break;
}
/* we support configs with a single PF defined:
@@ -3755,9 +3764,10 @@ networkUpdate(virNetworkPtr net,
/* Take care of anything that must be done before updating the
* live NetworkDef.
*/
- if (def->forward.type == VIR_NETWORK_FORWARD_NONE ||
- def->forward.type == VIR_NETWORK_FORWARD_NAT ||
- def->forward.type == VIR_NETWORK_FORWARD_ROUTE) {
+ switch (def->forward.type) {
+ case VIR_NETWORK_FORWARD_NONE:
+ case VIR_NETWORK_FORWARD_NAT:
+ case VIR_NETWORK_FORWARD_ROUTE:
switch (section) {
case VIR_NETWORK_SECTION_FORWARD:
case VIR_NETWORK_SECTION_FORWARD_INTERFACE:
@@ -3768,14 +3778,13 @@ networkUpdate(virNetworkPtr net,
* old rules (and remember to load new ones after the
* update).
*/
- if (def->forward.type != VIR_NETWORK_FORWARD_OPEN) {
- networkRemoveFirewallRules(def);
- needFirewallRefresh = true;
- }
+ networkRemoveFirewallRules(def);
+ needFirewallRefresh = true;
break;
default:
break;
}
+ break;
}
}
@@ -4440,10 +4449,11 @@ networkAllocateActualDevice(virDomainDefPtr dom,
iface->data.network.actual->trustGuestRxFilters
= netdef->trustGuestRxFilters;
- if ((netdef->forward.type == VIR_NETWORK_FORWARD_NONE) ||
- (netdef->forward.type == VIR_NETWORK_FORWARD_NAT) ||
- (netdef->forward.type == VIR_NETWORK_FORWARD_ROUTE) ||
- (netdef->forward.type == VIR_NETWORK_FORWARD_OPEN)) {
+ switch (netdef->forward.type) {
+ case VIR_NETWORK_FORWARD_NONE:
+ case VIR_NETWORK_FORWARD_NAT:
+ case VIR_NETWORK_FORWARD_ROUTE:
+ case VIR_NETWORK_FORWARD_OPEN:
/* for these forward types, the actual net type really *is*
* NETWORK; we just keep the info from the portgroup in
* iface->data.network.actual
@@ -4463,46 +4473,9 @@ networkAllocateActualDevice(virDomainDefPtr dom,
if (networkPlugBandwidth(obj, iface) < 0)
goto error;
+ break;
- } else if ((netdef->forward.type == VIR_NETWORK_FORWARD_BRIDGE) &&
- netdef->bridge) {
-
- /* <forward type='bridge'/> <bridge name='xxx'/>
- * is VIR_DOMAIN_NET_TYPE_BRIDGE
- */
-
- iface->data.network.actual->type = actualType = VIR_DOMAIN_NET_TYPE_BRIDGE;
- if (VIR_STRDUP(iface->data.network.actual->data.bridge.brname,
- netdef->bridge) < 0)
- goto error;
- iface->data.network.actual->data.bridge.macTableManager
- = netdef->macTableManager;
-
- /* merge virtualports from interface, network, and portgroup to
- * arrive at actual virtualport to use
- */
- if (virNetDevVPortProfileMerge3(&iface->data.network.actual->virtPortProfile,
- iface->virtPortProfile,
- netdef->virtPortProfile,
- portgroup
- ? portgroup->virtPortProfile : NULL) < 0) {
- goto error;
- }
- virtport = iface->data.network.actual->virtPortProfile;
- if (virtport) {
- /* only type='openvswitch' is allowed for bridges */
- if (virtport->virtPortType != VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH) {
- virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
- _("<virtualport type='%s'> not supported for network "
- "'%s' which uses a bridge device"),
- virNetDevVPortTypeToString(virtport->virtPortType),
- netdef->name);
- goto error;
- }
- }
-
- } else if (netdef->forward.type == VIR_NETWORK_FORWARD_HOSTDEV) {
-
+ case VIR_NETWORK_FORWARD_HOSTDEV: {
virDomainHostdevSubsysPCIBackendType backend;
iface->data.network.actual->type = actualType = VIR_DOMAIN_NET_TYPE_HOSTDEV;
@@ -4575,12 +4548,55 @@ networkAllocateActualDevice(virDomainDefPtr dom,
goto error;
}
}
+ break;
+ }
+
+ case VIR_NETWORK_FORWARD_BRIDGE:
+ if (netdef->bridge) {
+ /* <forward type='bridge'/> <bridge name='xxx'/>
+ * is VIR_DOMAIN_NET_TYPE_BRIDGE
+ */
+
+ iface->data.network.actual->type = actualType = VIR_DOMAIN_NET_TYPE_BRIDGE;
+ if (VIR_STRDUP(iface->data.network.actual->data.bridge.brname,
+ netdef->bridge) < 0)
+ goto error;
+ iface->data.network.actual->data.bridge.macTableManager
+ = netdef->macTableManager;
+
+ /* merge virtualports from interface, network, and portgroup to
+ * arrive at actual virtualport to use
+ */
+ if (virNetDevVPortProfileMerge3(&iface->data.network.actual->virtPortProfile,
+ iface->virtPortProfile,
+ netdef->virtPortProfile,
+ portgroup
+ ? portgroup->virtPortProfile : NULL) < 0) {
+ goto error;
+ }
+ virtport = iface->data.network.actual->virtPortProfile;
+ if (virtport) {
+ /* only type='openvswitch' is allowed for bridges */
+ if (virtport->virtPortType != VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("<virtualport type='%s'> not supported for network "
+ "'%s' which uses a bridge device"),
+ virNetDevVPortTypeToString(virtport->virtPortType),
+ netdef->name);
+ goto error;
+ }
+ }
+ break;
+ }
- } else if ((netdef->forward.type == VIR_NETWORK_FORWARD_BRIDGE) ||
- (netdef->forward.type == VIR_NETWORK_FORWARD_PRIVATE) ||
- (netdef->forward.type == VIR_NETWORK_FORWARD_VEPA) ||
- (netdef->forward.type == VIR_NETWORK_FORWARD_PASSTHROUGH)) {
+ /* intentionally fall through to the direct case for
+ * VIR_NETWORK_FORWARD_BRIDGE with no bridge device defined
+ */
+ ATTRIBUTE_FALLTHROUGH;
+ case VIR_NETWORK_FORWARD_PRIVATE:
+ case VIR_NETWORK_FORWARD_VEPA:
+ case VIR_NETWORK_FORWARD_PASSTHROUGH:
/* <forward type='bridge|private|vepa|passthrough'> are all
* VIR_DOMAIN_NET_TYPE_DIRECT.
*/
@@ -4680,6 +4696,7 @@ networkAllocateActualDevice(virDomainDefPtr dom,
dev->device.dev) < 0)
goto error;
}
+ break;
}
if (virNetworkObjMacMgrAdd(obj, driver->dnsmasqStateDir,
@@ -5037,13 +5054,15 @@ networkReleaseActualDevice(virDomainDefPtr dom,
}
netdef = virNetworkObjGetDef(obj);
- if (iface->data.network.actual &&
- (netdef->forward.type == VIR_NETWORK_FORWARD_NONE ||
- netdef->forward.type == VIR_NETWORK_FORWARD_NAT ||
- netdef->forward.type == VIR_NETWORK_FORWARD_ROUTE ||
- netdef->forward.type == VIR_NETWORK_FORWARD_OPEN) &&
- networkUnplugBandwidth(obj, iface) < 0)
- goto error;
+ switch (netdef->forward.type) {
+ case VIR_NETWORK_FORWARD_NONE:
+ case VIR_NETWORK_FORWARD_NAT:
+ case VIR_NETWORK_FORWARD_ROUTE:
+ case VIR_NETWORK_FORWARD_OPEN:
+ if (iface->data.network.actual && networkUnplugBandwidth(obj, iface) < 0)
+ goto error;
+ break;
+ }
if ((!iface->data.network.actual) ||
((actualType != VIR_DOMAIN_NET_TYPE_DIRECT) &&
--
2.7.4
More information about the libvir-list
mailing list