[libvirt] [PATCH] replace 'if' type conditions with 'switch' for VIR_NETWORK_FORWARD_*

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(a)gmx.com&gt; --- 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