Remove obsolete bind parameter

The parameter lived inside `dataplane` configuration and denoted that
`igb_uio` driver should be loaded to handle the port. This parameter
support was removed so we need to clean the code artifacts.

Closes #32

dataplane/dataplane.cpp

@@ -298,8 +298,7 @@ eResult cDataPlane::initPorts()
 	for (const auto& configPortIter : config.ports)
 	{
 		const std::string& interfaceName = configPortIter.first;
-		const auto& [pci, bind] = configPortIter.second;
-		(void)bind;
+		const auto& [pci] = configPortIter.second;
 
 		tPortId portId;
 		if (strncmp(pci.data(), SOCK_DEV_PREFIX, strlen(SOCK_DEV_PREFIX)) == 0)
@@ -1366,23 +1365,14 @@ eResult cDataPlane::parseJsonPorts(const nlohmann::json& json)
 	{
 		std::string interfaceName = portJson["interfaceName"];
 		std::string pci = portJson["pci"];
-		bool bind = false;
 
 		if (exist(config.ports, interfaceName))
 		{
 			YADECAP_LOG_ERROR("interfaceName '%s' already exist\n", interfaceName.data());
 			return eResult::invalidConfigurationFile;
 		}
 
-		if (exist(portJson, "bind"))
-		{
-			if (portJson["bind"] == "true")
-			{
-				bind = true;
-			}
-		}
-
-		config.ports[interfaceName] = {pci, bind};
+		config.ports[interfaceName] = {pci};
 
 		for (tCoreId coreId : portJson["coreIds"])
 		{
@@ -1586,8 +1576,7 @@ eResult cDataPlane::checkConfig()
 		std::set<std::string> pcis;
 		for (const auto& portIter : config.ports)
 		{
-			const auto& [pci, bind] = portIter.second;
-			(void)bind;
+			const auto& [pci] = portIter.second;
 
 			if (exist(pcis, pci))
 			{
@@ -1679,8 +1668,7 @@ eResult cDataPlane::initEal(const std::string& binaryPath,
 
 	for (const auto& port : config.ports)
 	{
-		const auto& [pci, bind] = port.second;
-		(void)bind;
+		const auto& [pci] = port.second;
 
 		// Do not whitelist sock dev virtual devices
 		if (strncmp(pci.data(), SOCK_DEV_PREFIX, strlen(SOCK_DEV_PREFIX)) == 0)

dataplane/dataplane.h

@@ -60,10 +60,16 @@ enum class eConfigType
 
 struct tDataPlaneConfig
 {
+	/*
+	   DPDK ports used by `dataplane`.
+	   Each port has a name with which is exposed into host system
+	   and an identifier (typically pci id) used to lookup the port within
+	   DPDK.
+	*/
 	std::map<std::string, ///< interfaceName
-	         std::tuple<std::string, ///< pci
-	                    bool>> ///< bind driver
+	         std::tuple<std::string>> ///< pci
 	        ports;
+
 	std::set<tCoreId> workerGCs;
 	tCoreId controlPlaneCoreId;
 	std::map<tCoreId, std::vector<std::string>> workers;