utils.cpp - openbmc/phosphor-host-ipmid - Gitiles

 #include "utils.hpp"
 #include <phosphor-logging/log.hpp>
 #include <phosphor-logging/elog-errors.hpp>
 #include "xyz/openbmc_project/Common/error.hpp"

 #include <arpa/inet.h>
 #include <dirent.h>
 #include <net/if.h>

 namespace ipmi
 {

 using namespace phosphor::logging;
 using namespace sdbusplus::xyz::openbmc_project::Common::Error;

 namespace network
 {

 /** @brief checks if the given ip is Link Local Ip or not.
   *  @param[in] ipaddress - IPAddress.
   */
 bool isLinkLocalIP(const std::string& ipaddress);

 }

 //TODO There may be cases where an interface is implemented by multiple
 //  objects,to handle such cases we are interested on that object
 //  which are on interested busname.
 //  Currently mapper doesn't give the readable busname(gives busid) so we can't
 //  use busname to find the object,will do later once the support is there.

 DbusObjectInfo getDbusObject(sdbusplus::bus::bus& bus,
                              const std::string& interface,
                              const std::string& serviceRoot,
                              const std::string& match)
 {
     std::vector<DbusInterface> interfaces;
     interfaces.emplace_back(interface);

     auto depth = 0;

     auto mapperCall = bus.new_method_call(MAPPER_BUS_NAME,
                                           MAPPER_OBJ,
                                           MAPPER_INTF,
                                           "GetSubTree");

     mapperCall.append(serviceRoot, depth, interfaces);

     auto mapperReply = bus.call(mapperCall);
     if (mapperReply.is_method_error())
     {
         log<level::ERR>("Error in mapper call");
         elog<InternalFailure>();
     }

     ObjectTree objectTree;
     mapperReply.read(objectTree);

     if (objectTree.empty())
     {
         log<level::ERR>("No Object has implemented the interface",
                         entry("INTERFACE=%s", interface.c_str()));
         elog<InternalFailure>();
     }

     DbusObjectInfo objectInfo;

     // if match is empty then return the first object
     if(match == "")
     {
         objectInfo =  std::make_pair(objectTree.begin()->first,
             std::move(objectTree.begin()->second.begin()->first));
         return objectInfo;
     }

     // else search the match string in the object path
     auto objectFound = false;
     for (auto& object : objectTree)
     {
         if(object.first.find(match) != std::string::npos)
         {
             objectFound = true;
             objectInfo = make_pair(object.first,
                             std::move(object.second.begin()->first));
             break;
         }
     }

     if(!objectFound)
     {
         log<level::ERR>("Failed to find object which matches",
                         entry("MATCH=%s", match.c_str()));
         elog<InternalFailure>();
     }
     return objectInfo;

 }

 DbusObjectInfo getIPObject(sdbusplus::bus::bus& bus,
                            const std::string& interface,
                            const std::string& serviceRoot,
                            const std::string& match)
 {
     auto objectTree = getAllDbusObjects(bus, serviceRoot, interface, match);

     if (objectTree.empty())
     {
         log<level::ERR>("No Object has implemented the IP interface",
                         entry("INTERFACE=%s", interface.c_str()));
         elog<InternalFailure>();
     }

     DbusObjectInfo objectInfo;

     for (auto& object : objectTree)
     {
         auto variant = ipmi::getDbusProperty(
                            bus,
                            object.second.begin()->first,
                            object.first,
                            ipmi::network::IP_INTERFACE,
                            "Address");

         objectInfo =  std::make_pair(object.first, object.second.begin()->first);

         // if LinkLocalIP found look for Non-LinkLocalIP
         if (ipmi::network::isLinkLocalIP(variant.get<std::string>()))
         {
             continue;
         }
         else
         {
             break;
         }
     }
     return objectInfo;
 }

 Value getDbusProperty(sdbusplus::bus::bus& bus,
                       const std::string& service,
                       const std::string& objPath,
                       const std::string& interface,
                       const std::string& property)
 {

     Value value;

     auto method = bus.new_method_call(
                       service.c_str(),
                       objPath.c_str(),
                       PROP_INTF,
                       METHOD_GET);

     method.append(interface, property);

     auto reply = bus.call(method);

     if (reply.is_method_error())
     {
          log<level::ERR>("Failed to get property",
                          entry("PROPERTY=%s", property.c_str()),
                          entry("PATH=%s", objPath.c_str()),
                          entry("INTERFACE=%s", interface.c_str()));
         elog<InternalFailure>();
     }

     reply.read(value);

     return value;
 }

 PropertyMap getAllDbusProperties(sdbusplus::bus::bus& bus,
                                  const std::string& service,
                                  const std::string& objPath,
                                  const std::string& interface)
 {
     PropertyMap properties;

     auto method = bus.new_method_call(
                       service.c_str(),
                       objPath.c_str(),
                       PROP_INTF,
                       METHOD_GET_ALL);

     method.append(interface);

     auto reply = bus.call(method);

     if (reply.is_method_error())
     {
          log<level::ERR>("Failed to get all properties",
                          entry("PATH=%s", objPath.c_str()),
                          entry("INTERFACE=%s", interface.c_str()));
          elog<InternalFailure>();
     }

     reply.read(properties);
     return properties;
 }

 void setDbusProperty(sdbusplus::bus::bus& bus,
                      const std::string& service,
                      const std::string& objPath,
                      const std::string& interface,
                      const std::string& property,
                      const Value& value)
 {
     auto method = bus.new_method_call(
                       service.c_str(),
                       objPath.c_str(),
                       PROP_INTF,
                       METHOD_SET);

     method.append(interface, property, value);

     if (!bus.call(method))
     {
         log<level::ERR>("Failed to set property",
                         entry("PROPERTY=%s", property.c_str()),
                         entry("PATH=%s",objPath.c_str()),
                         entry("INTERFACE=%s",interface.c_str()));
         elog<InternalFailure>();
     }

 }


 std::string getService(sdbusplus::bus::bus& bus,
                        const std::string& intf,
                        const std::string& path)
 {
     auto mapperCall = bus.new_method_call("xyz.openbmc_project.ObjectMapper",
                                           "/xyz/openbmc_project/object_mapper",
                                           "xyz.openbmc_project.ObjectMapper",
                                           "GetObject");

     mapperCall.append(path);
     mapperCall.append(std::vector<std::string>({intf}));

     auto mapperResponseMsg = bus.call(mapperCall);

     if (mapperResponseMsg.is_method_error())
     {
         throw std::runtime_error("ERROR in mapper call");
     }

     std::map<std::string, std::vector<std::string>> mapperResponse;
     mapperResponseMsg.read(mapperResponse);

     if (mapperResponse.begin() == mapperResponse.end())
     {
         throw std::runtime_error("ERROR in reading the mapper response");
     }

     return mapperResponse.begin()->first;
 }

 ipmi::ObjectTree getAllDbusObjects(sdbusplus::bus::bus& bus,
                                    const std::string& serviceRoot,
                                    const std::string& interface,
                                    const std::string& match)
 {
     std::vector<std::string> interfaces;
     interfaces.emplace_back(interface);

     auto depth = 0;

     auto mapperCall = bus.new_method_call(MAPPER_BUS_NAME,
                                           MAPPER_OBJ,
                                           MAPPER_INTF,
                                           "GetSubTree");

     mapperCall.append(serviceRoot, depth, interfaces);

     auto mapperReply = bus.call(mapperCall);
     if (mapperReply.is_method_error())
     {
         log<level::ERR>("Error in mapper call",
                         entry("SERVICEROOT=%s",serviceRoot.c_str()),
                         entry("INTERFACE=%s", interface.c_str()));

         elog<InternalFailure>();
     }

     ObjectTree objectTree;
     mapperReply.read(objectTree);

     for (auto it = objectTree.begin(); it != objectTree.end();)
     {
         if (it->first.find(match) == std::string::npos)
         {
             it = objectTree.erase(it);
         }
         else
         {
             ++it;
         }
     }

     return objectTree;
 }

 void deleteAllDbusObjects(sdbusplus::bus::bus& bus,
                           const std::string& serviceRoot,
                           const std::string& interface,
                           const std::string& match)
 {
     try
     {
         auto objectTree =  getAllDbusObjects(bus, serviceRoot, interface, match);

         for (auto& object : objectTree)
         {
             method_no_args::callDbusMethod(bus,
                                            object.second.begin()->first,
                                            object.first,
                                            DELETE_INTERFACE, "Delete");
         }
     }
     catch (InternalFailure& e)
     {
         log<level::INFO>("Unable to delete the objects having",
                          entry("INTERFACE=%s", interface.c_str()),
                          entry("SERVICE=%s", serviceRoot.c_str()));
     }
 }

 ObjectTree getAllAncestors(sdbusplus::bus::bus& bus,
                            const std::string& path,
                            InterfaceList&& interfaces)
 {
     auto convertToString = [](InterfaceList& interfaces) -> std::string
     {
         std::string intfStr;
         for (const auto& intf : interfaces)
         {
             intfStr += "," + intf;
         }
         return intfStr;
     };

     auto mapperCall = bus.new_method_call(MAPPER_BUS_NAME,
                                           MAPPER_OBJ,
                                           MAPPER_INTF,
                                           "GetAncestors");
     mapperCall.append(path, interfaces);

     auto mapperReply = bus.call(mapperCall);
     if (mapperReply.is_method_error())
     {
         log<level::ERR>("Error in mapper call",
                         entry("PATH=%s", path.c_str()),
                         entry("INTERFACES=%s",
                               convertToString(interfaces).c_str()));

         elog<InternalFailure>();
     }

     ObjectTree objectTree;
     mapperReply.read(objectTree);

     if (objectTree.empty())
     {
         log<level::ERR>("No Object has implemented the interface",
                         entry("PATH=%s", path.c_str()),
                         entry("INTERFACES=%s",
                               convertToString(interfaces).c_str()));
         elog<InternalFailure>();
     }

     return objectTree;
 }

 namespace method_no_args
 {

 void callDbusMethod(sdbusplus::bus::bus& bus,
                     const std::string& service,
                     const std::string& objPath,
                     const std::string& interface,
                     const std::string& method)

 {
     auto busMethod = bus.new_method_call(
                          service.c_str(),
                          objPath.c_str(),
                          interface.c_str(),
                          method.c_str());

     auto reply = bus.call(busMethod);

     if (reply.is_method_error())
     {
         log<level::ERR>("Failed to execute method",
                         entry("METHOD=%s", method.c_str()),
                         entry("PATH=%s", objPath.c_str()),
                         entry("INTERFACE=%s", interface.c_str()));
         elog<InternalFailure>();
     }
 }

 }// namespace method_no_args

 namespace network
 {

 bool isLinkLocalIP(const std::string& address)
 {
     return address.find(IPV4_PREFIX) == 0 || address.find(IPV6_PREFIX) == 0;
 }

 void createIP(sdbusplus::bus::bus& bus,
               const std::string& service,
               const std::string& objPath,
               const std::string& protocolType,
               const std::string& ipaddress,
               uint8_t prefix)
 {
     std::string gateway = "";

     auto busMethod = bus.new_method_call(
                          service.c_str(),
                          objPath.c_str(),
                          IP_CREATE_INTERFACE,
                          "IP");

     busMethod.append(protocolType, ipaddress, prefix, gateway);

     auto reply = bus.call(busMethod);

     if (reply.is_method_error())
     {
         log<level::ERR>("Failed to excute method",
                         entry("METHOD=%s", "IP"),
                         entry("PATH=%s", objPath.c_str()));
         elog<InternalFailure>();
     }

 }

 void createVLAN(sdbusplus::bus::bus& bus,
                 const std::string& service,
                 const std::string& objPath,
                 const std::string& interfaceName,
                 uint32_t vlanID)
 {
     auto busMethod = bus.new_method_call(
                          service.c_str(),
                          objPath.c_str(),
                          VLAN_CREATE_INTERFACE,
                          "VLAN");

     busMethod.append(interfaceName, vlanID);

     auto reply = bus.call(busMethod);

     if (reply.is_method_error())
     {
         log<level::ERR>("Failed to excute method",
                         entry("METHOD=%s", "VLAN"),
                         entry("PATH=%s", objPath.c_str()));
         elog<InternalFailure>();
     }

 }

 uint8_t toPrefix(int addressFamily, const std::string& subnetMask)
 {
     if (addressFamily == AF_INET6)
     {
         return 0;
     }

     uint32_t buff {};

     auto rc = inet_pton(addressFamily, subnetMask.c_str(), &buff);
     if (rc <= 0)
     {
         log<level::ERR>("inet_pton failed:",
                         entry("SUBNETMASK=%s", subnetMask));
         return 0;
     }

     buff = be32toh(buff);
     // total no of bits - total no of leading zero == total no of ones
     if (((sizeof(buff) * 8) - (__builtin_ctz(buff))) == __builtin_popcount(buff))
     {
         return __builtin_popcount(buff);
     }
     else
     {
         log<level::ERR>("Invalid Mask",
                         entry("SUBNETMASK=%s", subnetMask));
         return 0;
     }
 }

 uint32_t getVLAN(const std::string& path)
 {
     // Path would be look like
     // /xyz/openbmc_project/network/eth0_443/ipv4

     uint32_t vlanID = 0;
     try
     {
         auto intfObjectPath = path.substr(0,
                 path.find(IP_TYPE) - 1);

         auto intfName = intfObjectPath.substr(intfObjectPath.rfind("/") + 1);

         auto index = intfName.find("_");
         if (index != std::string::npos)
         {
             auto str = intfName.substr(index + 1);
             vlanID = std::stoul(str);
         }
     }
     catch (std::exception & e)
     {
         log<level::ERR>("Exception occurred during getVLAN",
                         entry("PATH=%s",path.c_str()),
                         entry("EXCEPTION=%s", e.what()));
     }
     return vlanID;
 }

 } // namespace network
 } // namespace ipmi
	#include "utils.hpp"
	#include <phosphor-logging/log.hpp>
	#include <phosphor-logging/elog-errors.hpp>
	#include "xyz/openbmc_project/Common/error.hpp"

	#include <arpa/inet.h>
	#include <dirent.h>
	#include <net/if.h>

	namespace ipmi
	{

	using namespace phosphor::logging;
	using namespace sdbusplus::xyz::openbmc_project::Common::Error;

	namespace network
	{

	/** @brief checks if the given ip is Link Local Ip or not.
	* @param[in] ipaddress - IPAddress.
	*/
	bool isLinkLocalIP(const std::string& ipaddress);

	}

	//TODO There may be cases where an interface is implemented by multiple
	// objects,to handle such cases we are interested on that object
	// which are on interested busname.
	// Currently mapper doesn't give the readable busname(gives busid) so we can't
	// use busname to find the object,will do later once the support is there.

	DbusObjectInfo getDbusObject(sdbusplus::bus::bus& bus,
	const std::string& interface,
	const std::string& serviceRoot,
	const std::string& match)
	{
	std::vector<DbusInterface> interfaces;
	interfaces.emplace_back(interface);

	auto depth = 0;

	auto mapperCall = bus.new_method_call(MAPPER_BUS_NAME,
	MAPPER_OBJ,
	MAPPER_INTF,
	"GetSubTree");

	mapperCall.append(serviceRoot, depth, interfaces);

	auto mapperReply = bus.call(mapperCall);
	if (mapperReply.is_method_error())
	{
	log<level::ERR>("Error in mapper call");
	elog<InternalFailure>();
	}

	ObjectTree objectTree;
	mapperReply.read(objectTree);

	if (objectTree.empty())
	{
	log<level::ERR>("No Object has implemented the interface",
	entry("INTERFACE=%s", interface.c_str()));
	elog<InternalFailure>();
	}

	DbusObjectInfo objectInfo;

	// if match is empty then return the first object
	if(match == "")
	{
	objectInfo = std::make_pair(objectTree.begin()->first,
	std::move(objectTree.begin()->second.begin()->first));
	return objectInfo;
	}

	// else search the match string in the object path
	auto objectFound = false;
	for (auto& object : objectTree)
	{
	if(object.first.find(match) != std::string::npos)
	{
	objectFound = true;
	objectInfo = make_pair(object.first,
	std::move(object.second.begin()->first));
	break;
	}
	}

	if(!objectFound)
	{
	log<level::ERR>("Failed to find object which matches",
	entry("MATCH=%s", match.c_str()));
	elog<InternalFailure>();
	}
	return objectInfo;

	}

	DbusObjectInfo getIPObject(sdbusplus::bus::bus& bus,
	const std::string& interface,
	const std::string& serviceRoot,
	const std::string& match)
	{
	auto objectTree = getAllDbusObjects(bus, serviceRoot, interface, match);

	if (objectTree.empty())
	{
	log<level::ERR>("No Object has implemented the IP interface",
	entry("INTERFACE=%s", interface.c_str()));
	elog<InternalFailure>();
	}

	DbusObjectInfo objectInfo;

	for (auto& object : objectTree)
	{
	auto variant = ipmi::getDbusProperty(
	bus,
	object.second.begin()->first,
	object.first,
	ipmi::network::IP_INTERFACE,
	"Address");

	objectInfo = std::make_pair(object.first, object.second.begin()->first);

	// if LinkLocalIP found look for Non-LinkLocalIP
	if (ipmi::network::isLinkLocalIP(variant.get<std::string>()))
	{
	continue;
	}
	else
	{
	break;
	}
	}
	return objectInfo;
	}

	Value getDbusProperty(sdbusplus::bus::bus& bus,
	const std::string& service,
	const std::string& objPath,
	const std::string& interface,
	const std::string& property)
	{

	Value value;

	auto method = bus.new_method_call(
	service.c_str(),
	objPath.c_str(),
	PROP_INTF,
	METHOD_GET);

	method.append(interface, property);

	auto reply = bus.call(method);

	if (reply.is_method_error())
	{
	log<level::ERR>("Failed to get property",
	entry("PROPERTY=%s", property.c_str()),
	entry("PATH=%s", objPath.c_str()),
	entry("INTERFACE=%s", interface.c_str()));
	elog<InternalFailure>();
	}

	reply.read(value);

	return value;
	}

	PropertyMap getAllDbusProperties(sdbusplus::bus::bus& bus,
	const std::string& service,
	const std::string& objPath,
	const std::string& interface)
	{
	PropertyMap properties;

	auto method = bus.new_method_call(
	service.c_str(),
	objPath.c_str(),
	PROP_INTF,
	METHOD_GET_ALL);

	method.append(interface);

	auto reply = bus.call(method);

	if (reply.is_method_error())
	{
	log<level::ERR>("Failed to get all properties",
	entry("PATH=%s", objPath.c_str()),
	entry("INTERFACE=%s", interface.c_str()));
	elog<InternalFailure>();
	}

	reply.read(properties);
	return properties;
	}

	void setDbusProperty(sdbusplus::bus::bus& bus,
	const std::string& service,
	const std::string& objPath,
	const std::string& interface,
	const std::string& property,
	const Value& value)
	{
	auto method = bus.new_method_call(
	service.c_str(),
	objPath.c_str(),
	PROP_INTF,
	METHOD_SET);

	method.append(interface, property, value);

	if (!bus.call(method))
	{
	log<level::ERR>("Failed to set property",
	entry("PROPERTY=%s", property.c_str()),
	entry("PATH=%s",objPath.c_str()),
	entry("INTERFACE=%s",interface.c_str()));
	elog<InternalFailure>();
	}

	}


	std::string getService(sdbusplus::bus::bus& bus,
	const std::string& intf,
	const std::string& path)
	{
	auto mapperCall = bus.new_method_call("xyz.openbmc_project.ObjectMapper",
	"/xyz/openbmc_project/object_mapper",
	"xyz.openbmc_project.ObjectMapper",
	"GetObject");

	mapperCall.append(path);
	mapperCall.append(std::vector<std::string>({intf}));

	auto mapperResponseMsg = bus.call(mapperCall);

	if (mapperResponseMsg.is_method_error())
	{
	throw std::runtime_error("ERROR in mapper call");
	}

	std::map<std::string, std::vector<std::string>> mapperResponse;
	mapperResponseMsg.read(mapperResponse);

	if (mapperResponse.begin() == mapperResponse.end())
	{
	throw std::runtime_error("ERROR in reading the mapper response");
	}

	return mapperResponse.begin()->first;
	}

	ipmi::ObjectTree getAllDbusObjects(sdbusplus::bus::bus& bus,
	const std::string& serviceRoot,
	const std::string& interface,
	const std::string& match)
	{
	std::vector<std::string> interfaces;
	interfaces.emplace_back(interface);

	auto depth = 0;

	auto mapperCall = bus.new_method_call(MAPPER_BUS_NAME,
	MAPPER_OBJ,
	MAPPER_INTF,
	"GetSubTree");

	mapperCall.append(serviceRoot, depth, interfaces);

	auto mapperReply = bus.call(mapperCall);
	if (mapperReply.is_method_error())
	{
	log<level::ERR>("Error in mapper call",
	entry("SERVICEROOT=%s",serviceRoot.c_str()),
	entry("INTERFACE=%s", interface.c_str()));

	elog<InternalFailure>();
	}

	ObjectTree objectTree;
	mapperReply.read(objectTree);

	for (auto it = objectTree.begin(); it != objectTree.end();)
	{
	if (it->first.find(match) == std::string::npos)
	{
	it = objectTree.erase(it);
	}
	else
	{
	++it;
	}
	}

	return objectTree;
	}

	void deleteAllDbusObjects(sdbusplus::bus::bus& bus,
	const std::string& serviceRoot,
	const std::string& interface,
	const std::string& match)
	{
	try
	{
	auto objectTree = getAllDbusObjects(bus, serviceRoot, interface, match);

	for (auto& object : objectTree)
	{
	method_no_args::callDbusMethod(bus,
	object.second.begin()->first,
	object.first,
	DELETE_INTERFACE, "Delete");
	}
	}
	catch (InternalFailure& e)
	{
	log<level::INFO>("Unable to delete the objects having",
	entry("INTERFACE=%s", interface.c_str()),
	entry("SERVICE=%s", serviceRoot.c_str()));
	}
	}

	ObjectTree getAllAncestors(sdbusplus::bus::bus& bus,
	const std::string& path,
	InterfaceList&& interfaces)
	{
	auto convertToString = [](InterfaceList& interfaces) -> std::string
	{
	std::string intfStr;
	for (const auto& intf : interfaces)
	{
	intfStr += "," + intf;
	}
	return intfStr;
	};

	auto mapperCall = bus.new_method_call(MAPPER_BUS_NAME,
	MAPPER_OBJ,
	MAPPER_INTF,
	"GetAncestors");
	mapperCall.append(path, interfaces);

	auto mapperReply = bus.call(mapperCall);
	if (mapperReply.is_method_error())
	{
	log<level::ERR>("Error in mapper call",
	entry("PATH=%s", path.c_str()),
	entry("INTERFACES=%s",
	convertToString(interfaces).c_str()));

	elog<InternalFailure>();
	}

	ObjectTree objectTree;
	mapperReply.read(objectTree);

	if (objectTree.empty())
	{
	log<level::ERR>("No Object has implemented the interface",
	entry("PATH=%s", path.c_str()),
	entry("INTERFACES=%s",
	convertToString(interfaces).c_str()));
	elog<InternalFailure>();
	}

	return objectTree;
	}

	namespace method_no_args
	{

	void callDbusMethod(sdbusplus::bus::bus& bus,
	const std::string& service,
	const std::string& objPath,
	const std::string& interface,
	const std::string& method)

	{
	auto busMethod = bus.new_method_call(
	service.c_str(),
	objPath.c_str(),
	interface.c_str(),
	method.c_str());

	auto reply = bus.call(busMethod);

	if (reply.is_method_error())
	{
	log<level::ERR>("Failed to execute method",
	entry("METHOD=%s", method.c_str()),
	entry("PATH=%s", objPath.c_str()),
	entry("INTERFACE=%s", interface.c_str()));
	elog<InternalFailure>();
	}
	}

	}// namespace method_no_args

	namespace network
	{

	bool isLinkLocalIP(const std::string& address)
	{
	return address.find(IPV4_PREFIX) == 0 \|\| address.find(IPV6_PREFIX) == 0;
	}

	void createIP(sdbusplus::bus::bus& bus,
	const std::string& service,
	const std::string& objPath,
	const std::string& protocolType,
	const std::string& ipaddress,
	uint8_t prefix)
	{
	std::string gateway = "";

	auto busMethod = bus.new_method_call(
	service.c_str(),
	objPath.c_str(),
	IP_CREATE_INTERFACE,
	"IP");

	busMethod.append(protocolType, ipaddress, prefix, gateway);

	auto reply = bus.call(busMethod);

	if (reply.is_method_error())
	{
	log<level::ERR>("Failed to excute method",
	entry("METHOD=%s", "IP"),
	entry("PATH=%s", objPath.c_str()));
	elog<InternalFailure>();
	}

	}

	void createVLAN(sdbusplus::bus::bus& bus,
	const std::string& service,
	const std::string& objPath,
	const std::string& interfaceName,
	uint32_t vlanID)
	{
	auto busMethod = bus.new_method_call(
	service.c_str(),
	objPath.c_str(),
	VLAN_CREATE_INTERFACE,
	"VLAN");

	busMethod.append(interfaceName, vlanID);

	auto reply = bus.call(busMethod);

	if (reply.is_method_error())
	{
	log<level::ERR>("Failed to excute method",
	entry("METHOD=%s", "VLAN"),
	entry("PATH=%s", objPath.c_str()));
	elog<InternalFailure>();
	}

	}

	uint8_t toPrefix(int addressFamily, const std::string& subnetMask)
	{
	if (addressFamily == AF_INET6)
	{
	return 0;
	}

	uint32_t buff {};

	auto rc = inet_pton(addressFamily, subnetMask.c_str(), &buff);
	if (rc <= 0)
	{
	log<level::ERR>("inet_pton failed:",
	entry("SUBNETMASK=%s", subnetMask));
	return 0;
	}

	buff = be32toh(buff);
	// total no of bits - total no of leading zero == total no of ones
	if (((sizeof(buff) * 8) - (__builtin_ctz(buff))) == __builtin_popcount(buff))
	{
	return __builtin_popcount(buff);
	}
	else
	{
	log<level::ERR>("Invalid Mask",
	entry("SUBNETMASK=%s", subnetMask));
	return 0;
	}
	}

	uint32_t getVLAN(const std::string& path)
	{
	// Path would be look like
	// /xyz/openbmc_project/network/eth0_443/ipv4

	uint32_t vlanID = 0;
	try
	{
	auto intfObjectPath = path.substr(0,
	path.find(IP_TYPE) - 1);

	auto intfName = intfObjectPath.substr(intfObjectPath.rfind("/") + 1);

	auto index = intfName.find("_");
	if (index != std::string::npos)
	{
	auto str = intfName.substr(index + 1);
	vlanID = std::stoul(str);
	}
	}
	catch (std::exception & e)
	{
	log<level::ERR>("Exception occurred during getVLAN",
	entry("PATH=%s",path.c_str()),
	entry("EXCEPTION=%s", e.what()));
	}
	return vlanID;
	}

	} // namespace network
	} // namespace ipmi