Added more noexcept specifiers

9 files changed, 156 insertions, 153 deletions

diff --git a/src/Networking/LwipEthernet/GMAC/ethernet_sam.cpp b/src/Networking/LwipEthernet/GMAC/ethernet_sam.cpp
index e706a153..d4301e93 100644
--- a/src/Networking/LwipEthernet/GMAC/ethernet_sam.cpp
+++ b/src/Networking/LwipEthernet/GMAC/ethernet_sam.cpp
@@ -89,14 +89,14 @@ static timers_info_t gs_timers_table[] = {
 #endif
 };
 
-extern uint32_t millis();
+extern uint32_t millis() noexcept;
 
 }		// end extern "C"
 
 /**
  * \brief Process timing functions.
  */
-void ethernet_timers_update(void)
+void ethernet_timers_update(void) noexcept
 {
 	static uint32_t ul_last_time;
 	uint32_t ul_cur_time, ul_time_diff, ul_idx_timer;
@@ -127,7 +127,7 @@ void ethernet_timers_update(void)
 //************************************************************************************************************
 
 // This sets the static IP configuration on-the-fly
-void ethernet_set_configuration(IPAddress ipAddress, IPAddress netMask, IPAddress gateWay)
+void ethernet_set_configuration(IPAddress ipAddress, IPAddress netMask, IPAddress gateWay) noexcept
 {
 	ip4_addr_t x_ip_addr, x_net_mask, x_gateway;
 	x_ip_addr.addr = ipAddress.GetV4LittleEndian();
@@ -143,7 +143,7 @@ void ethernet_set_configuration(IPAddress ipAddress, IPAddress netMask, IPAddres
 /** \brief Initialize the Ethernet subsystem.
  *
  */
-void init_ethernet(IPAddress ipAddress, IPAddress netMask, IPAddress gateWay)
+void init_ethernet(IPAddress ipAddress, IPAddress netMask, IPAddress gateWay) noexcept
 {
 	ip4_addr_t x_ip_addr, x_net_mask, x_gateway;
 	x_ip_addr.addr = ipAddress.GetV4LittleEndian();
@@ -169,7 +169,7 @@ void init_ethernet(IPAddress ipAddress, IPAddress netMask, IPAddress gateWay)
 /** \brief Configure the Ethernet subsystem. Should be called after init_ethernet()
  *
  */
-void ethernet_configure_interface(const uint8_t macAddress[], const char *hostname)
+void ethernet_configure_interface(const uint8_t macAddress[], const char *hostname) noexcept
 {
 	ethernetif_set_mac_address(macAddress);
 
@@ -181,7 +181,7 @@ void ethernet_configure_interface(const uint8_t macAddress[], const char *hostna
 /* \brief Perform ethernet auto-negotiation and establish link. Returns true when ready
  *
  */
-bool ethernet_establish_link(void)
+bool ethernet_establish_link() noexcept
 {
 	if (ethernetif_establish_link())
 	{
@@ -194,7 +194,7 @@ bool ethernet_establish_link(void)
 /* \brief Is the link still up? Also updates the interface status if the link has gone down
  *
  */
-bool ethernet_link_established(void)
+bool ethernet_link_established() noexcept
 {
 	if (!ethernetif_link_established())
 	{
@@ -210,7 +210,7 @@ bool ethernet_link_established(void)
  *
  *  \return Returns true if data has been processed.
  */
-void ethernet_task(void)
+void ethernet_task() noexcept
 {
 #if !LWIP_GMAC_TASK
 	/* Run polling tasks */
@@ -229,7 +229,7 @@ void ethernet_task(void)
  *
  * \param callback The callback to be called when a new packet is ready
  */
-void ethernet_set_rx_callback(gmac_dev_tx_cb_t callback)
+void ethernet_set_rx_callback(gmac_dev_tx_cb_t callback) noexcept
 {
 	ethernetif_set_rx_callback(callback);
 }
@@ -238,7 +238,7 @@ void ethernet_set_rx_callback(gmac_dev_tx_cb_t callback)
 /*
  * \brief Returns the current IP address
  */
-void ethernet_get_ipaddress(IPAddress& ipAddress, IPAddress& netMask, IPAddress& gateWay)
+void ethernet_get_ipaddress(IPAddress& ipAddress, IPAddress& netMask, IPAddress& gateWay) noexcept
 {
 	ipAddress.SetV4LittleEndian(gs_net_if.ip_addr.addr);
 	netMask.SetV4LittleEndian(gs_net_if.netmask.addr);
diff --git a/src/Networking/LwipEthernet/GMAC/ethernet_sam.h b/src/Networking/LwipEthernet/GMAC/ethernet_sam.h
index 06516e19..c1948803 100644
--- a/src/Networking/LwipEthernet/GMAC/ethernet_sam.h
+++ b/src/Networking/LwipEthernet/GMAC/ethernet_sam.h
@@ -52,35 +52,35 @@
 #include "lwip/netif.h"
 
 // Perform low-level initialisation of the network interface
-void init_ethernet(IPAddress ipAddress, IPAddress netMask, IPAddress gateWay);
+void init_ethernet(IPAddress ipAddress, IPAddress netMask, IPAddress gateWay) noexcept;
 
 // Terminate Ethernet and stop any interrupts, tasks etc. Used when shutting down the whole system.
-inline void ethernet_terminate() { ethernetif_terminate(); }
+inline void ethernet_terminate() noexcept { ethernetif_terminate(); }
 
 // Configure the ethernet interface
-void ethernet_configure_interface(const uint8_t macAddress[], const char *hostname);
+void ethernet_configure_interface(const uint8_t macAddress[], const char *hostname) noexcept;
 
 // Perform ethernet auto-negotiation and establish link. Returns true when ready
-bool ethernet_establish_link(void);
+bool ethernet_establish_link() noexcept;
 
 // Is the link still up? Also updates the interface status if the link has gone down
-bool ethernet_link_established(void);
+bool ethernet_link_established() noexcept;
 
 // Update IPv4 configuration on demand
-void ethernet_set_configuration(IPAddress ipAddress, IPAddress netMask, IPAddress gateWay);
+void ethernet_set_configuration(IPAddress ipAddress, IPAddress netMask, IPAddress gateWay) noexcept;
 
 // Must be called periodically to keep the LwIP timers running
-void ethernet_timers_update(void);
+void ethernet_timers_update() noexcept;
 
 // Reads all stored network packets and processes them
-void ethernet_task(void);
+void ethernet_task() noexcept;
 
 #if !LWIP_GMAC_TASK
 // Set the RX callback for incoming network packets
-void ethernet_set_rx_callback(gmac_dev_tx_cb_t callback);
+void ethernet_set_rx_callback(gmac_dev_tx_cb_t callback) noexcept;
 #endif
 
 // Returns the network interface's current IPv4 address
-void ethernet_get_ipaddress(IPAddress& ipAddress, IPAddress& netMask, IPAddress& gateWay);
+void ethernet_get_ipaddress(IPAddress& ipAddress, IPAddress& netMask, IPAddress& gateWay) noexcept;
 
 #endif /* ETHERNET_SAM_H_INCLUDED */
diff --git a/src/Networking/LwipEthernet/GMAC/same70_gmac.cpp b/src/Networking/LwipEthernet/GMAC/same70_gmac.cpp
index 863f4018..2565fe79 100644
--- a/src/Networking/LwipEthernet/GMAC/same70_gmac.cpp
+++ b/src/Networking/LwipEthernet/GMAC/same70_gmac.cpp
@@ -176,7 +176,7 @@ static gmac_dev_tx_cb_t gmac_rx_cb = nullptr;
 /**
  * \brief GMAC interrupt handler.
  */
-void GMAC_Handler(void)
+extern "C" void GMAC_Handler() noexcept
 {
 #if LWIP_GMAC_TASK
 	/* Get interrupt status. */
@@ -214,7 +214,7 @@ void GMAC_Handler(void)
  * \param p_gmac_dev Pointer to driver data structure.
  * \param startAt The index to start populating from
  */
-static void gmac_rx_populate_queue(struct gmac_device *p_gmac_dev, uint32_t startAt)
+static void gmac_rx_populate_queue(struct gmac_device *p_gmac_dev, uint32_t startAt) noexcept
 {
 	uint32_t ul_index = startAt;
 
@@ -278,7 +278,7 @@ static void gmac_rx_populate_queue(struct gmac_device *p_gmac_dev, uint32_t star
  *
  * \param ps_gmac_dev Pointer to driver data structure.
  */
-static void gmac_rx_init(struct gmac_device *ps_gmac_dev)
+static void gmac_rx_init(struct gmac_device *ps_gmac_dev) noexcept
 {
 	uint32_t ul_index = 0;
 
@@ -308,7 +308,7 @@ static void gmac_rx_init(struct gmac_device *ps_gmac_dev)
  *
  * \param ps_gmac_dev Pointer to driver data structure.
  */
-static void gmac_tx_init(struct gmac_device *ps_gmac_dev)
+static void gmac_tx_init(struct gmac_device *ps_gmac_dev) noexcept
 {
 	uint32_t ul_index;
 
@@ -334,7 +334,7 @@ static void gmac_tx_init(struct gmac_device *ps_gmac_dev)
  *
  * \param netif the lwIP network interface structure for this ethernetif.
  */
-static void gmac_low_level_init(struct netif *netif)
+static void gmac_low_level_init(struct netif *netif) noexcept
 {
 #if 0			// chrishamm
 	volatile uint32_t ul_delay;
@@ -402,7 +402,7 @@ static void gmac_low_level_init(struct netif *netif)
  * \return ERR_OK if the packet could be sent.
  * an err_t value if the packet couldn't be sent.
  */
-static err_t gmac_low_level_output(netif *p_netif, struct pbuf *p)
+static err_t gmac_low_level_output(netif *p_netif, struct pbuf *p) noexcept
 {
 	gmac_device *const ps_gmac_dev = static_cast<gmac_device *>(p_netif->state);
 
@@ -482,7 +482,7 @@ static err_t gmac_low_level_output(netif *p_netif, struct pbuf *p)
  * \return a pbuf filled with the received packet (including MAC header).
  * 0 on memory error.
  */
-static pbuf *gmac_low_level_input(struct netif *netif)
+static pbuf *gmac_low_level_input(struct netif *netif) noexcept
 {
 	gmac_device *ps_gmac_dev = static_cast<gmac_device *>(netif->state);
 
@@ -565,7 +565,7 @@ static pbuf *gmac_low_level_input(struct netif *netif)
  *
  * \param pvParameters A pointer to the gmac_device instance.
  */
-extern "C" [[noreturn]] void gmac_task(void *pvParameters)
+extern "C" [[noreturn]] void gmac_task(void *pvParameters) noexcept
 {
 	gmac_device * const ps_gmac_dev = static_cast<gmac_device*>(pvParameters);
 	netif * const p_netif = ps_gmac_dev->netif;
@@ -593,7 +593,7 @@ extern "C" [[noreturn]] void gmac_task(void *pvParameters)
  *
  * \param netif the lwIP network interface structure for this ethernetif.
  */
-bool ethernetif_input(struct netif *netif)
+bool ethernetif_input(struct netif *netif) noexcept
 {
 	struct eth_hdr *ethhdr;
 	struct pbuf *p;
@@ -642,7 +642,7 @@ bool ethernetif_input(struct netif *netif)
  * ERR_MEM if private data couldn't be allocated.
  * any other err_t on error.
  */
-err_t ethernetif_init(struct netif *netif)
+err_t ethernetif_init(struct netif *netif) noexcept
 {
 	LWIP_ASSERT("netif != NULL", (netif != NULL));
 
@@ -683,7 +683,7 @@ err_t ethernetif_init(struct netif *netif)
 	return ERR_OK;
 }
 
-void ethernetif_hardware_init(void)
+void ethernetif_hardware_init() noexcept
 {
 	/* Enable GMAC clock. */
 	pmc_enable_periph_clk(ID_GMAC);
@@ -767,7 +767,7 @@ void ethernetif_hardware_init(void)
 	NVIC_EnableIRQ(GMAC_IRQn);
 }
 
-bool ethernetif_establish_link(void)
+bool ethernetif_establish_link() noexcept
 {
 	/* Auto Negotiate, work in RMII mode. */
 	uint8_t result = ethernet_phy_auto_negotiate(GMAC, BOARD_GMAC_PHY_ADDR);
@@ -790,7 +790,7 @@ bool ethernetif_establish_link(void)
 }
 
 // Ask the PHY if the link is still up
-bool ethernetif_link_established(void)
+bool ethernetif_link_established() noexcept
 {
 	gmac_enable_management(GMAC, true);
 
@@ -810,13 +810,13 @@ bool ethernetif_link_established(void)
 }
 
 #if !LWIP_GMAC_TASK
-void ethernetif_set_rx_callback(gmac_dev_tx_cb_t callback)
+void ethernetif_set_rx_callback(gmac_dev_tx_cb_t callback) noexcept
 {
 	gmac_rx_cb = callback;
 }
 #endif
 
-void ethernetif_set_mac_address(const uint8_t macAddress[])
+void ethernetif_set_mac_address(const uint8_t macAddress[]) noexcept
 {
 	// This function must be called once before low_level_init(), because that is where the
 	// MAC address of the netif is assigned
@@ -827,7 +827,7 @@ void ethernetif_set_mac_address(const uint8_t macAddress[])
 }
 
 // This is called when we shut down
-void ethernetif_terminate()
+void ethernetif_terminate() noexcept
 {
 	NVIC_DisableIRQ(GMAC_IRQn);
 #if LWIP_GMAC_TASK
@@ -835,9 +835,9 @@ void ethernetif_terminate()
 #endif
 }
 
-extern "C" u32_t millis();
+extern "C" u32_t millis() noexcept;
 
-extern "C" u32_t sys_now(void)
+extern "C" u32_t sys_now() noexcept
 {
 	return millis();
 }
diff --git a/src/Networking/LwipEthernet/GMAC/same70_gmac.h b/src/Networking/LwipEthernet/GMAC/same70_gmac.h
index 6d494faf..8d6bd595 100644
--- a/src/Networking/LwipEthernet/GMAC/same70_gmac.h
+++ b/src/Networking/LwipEthernet/GMAC/same70_gmac.h
@@ -57,24 +57,24 @@ extern "C" {
 #ifdef __cplusplus
 }
 
-err_t ethernetif_init(struct netif *netif);				// called by LwIP to initialise the interface
+err_t ethernetif_init(struct netif *netif) noexcept;		// called by LwIP to initialise the interface
 
-void ethernetif_terminate();							// called when we shut down
+void ethernetif_terminate() noexcept;						// called when we shut down
 
-bool ethernetif_input(struct netif *netif);				// checks for a new packet and returns true if one was processed
+bool ethernetif_input(struct netif *netif) noexcept;		// checks for a new packet and returns true if one was processed
 
-void ethernetif_hardware_init(void);					// initialises the low-level hardware interface
+void ethernetif_hardware_init() noexcept;					// initialises the low-level hardware interface
 
-bool ethernetif_establish_link(void);					// attempts to establish link and returns true on success
+bool ethernetif_establish_link() noexcept;					// attempts to establish link and returns true on success
 
-bool ethernetif_link_established(void);					// asks the PHY if the link is still up
+bool ethernetif_link_established() noexcept;				// asks the PHY if the link is still up
 
 #if !LWIP_GMAC_TASK
-typedef void (*gmac_dev_tx_cb_t) (uint32_t ul_status);	// copied from gmac_raw.h
-void ethernetif_set_rx_callback(gmac_dev_tx_cb_t callback);
+typedef void (*gmac_dev_tx_cb_t) (uint32_t ul_status) noexcept;	// copied from gmac_raw.h
+void ethernetif_set_rx_callback(gmac_dev_tx_cb_t callback) noexcept;
 #endif
 
-void ethernetif_set_mac_address(const uint8_t macAddress[]);
+void ethernetif_set_mac_address(const uint8_t macAddress[]) noexcept;
 
 #endif
 
diff --git a/src/Networking/LwipEthernet/Lwip/src/include/lwip/sys.h b/src/Networking/LwipEthernet/Lwip/src/include/lwip/sys.h
index 3bfa245f..89e44449 100644
--- a/src/Networking/LwipEthernet/Lwip/src/include/lwip/sys.h
+++ b/src/Networking/LwipEthernet/Lwip/src/include/lwip/sys.h
@@ -40,7 +40,10 @@
 #include <Lwip/src/include/lwip/opt.h>
 
 #ifdef __cplusplus
+# define NOEXCEPT	noexcept
 extern "C" {
+#else
+# define NOEXCEPT
 #endif
 
 #if NO_SYS
@@ -340,7 +343,7 @@ u32_t sys_jiffies(void);
  * Returns the current time in milliseconds,
  * may be the same as sys_jiffies or at least based on it.
  */
-u32_t sys_now(void);
+u32_t sys_now(void) NOEXCEPT;
 
 /* Critical Region Protection */
 /* These functions must be implemented in the sys_arch.c file.
diff --git a/src/Networking/LwipEthernet/LwipEthernetInterface.cpp b/src/Networking/LwipEthernet/LwipEthernetInterface.cpp
index 79378030..88c42a90 100644
--- a/src/Networking/LwipEthernet/LwipEthernetInterface.cpp
+++ b/src/Networking/LwipEthernet/LwipEthernetInterface.cpp
@@ -134,7 +134,7 @@ extern "C"
 
 /*-----------------------------------------------------------------------------------*/
 
-LwipEthernetInterface::LwipEthernetInterface(Platform& p) : platform(p), closeDataPort(false), state(NetworkState::disabled),
+LwipEthernetInterface::LwipEthernetInterface(Platform& p) noexcept : platform(p), closeDataPort(false), state(NetworkState::disabled),
 		activated(false), initialised(false), usingDhcp(false)
 {
 	ethernetInterface = this;
@@ -175,7 +175,7 @@ DEFINE_GET_OBJECT_MODEL_TABLE(LwipEthernetInterface)
 
 #endif
 
-void LwipEthernetInterface::Init()
+void LwipEthernetInterface::Init() noexcept
 {
 	interfaceMutex.Create("LwipIface");
 	//TODO we don't yet use this mutex anywhere!
@@ -193,7 +193,7 @@ void LwipEthernetInterface::Init()
 	memcpy(macAddress, platform.GetDefaultMacAddress(), sizeof(macAddress));
 }
 
-GCodeResult LwipEthernetInterface::EnableProtocol(NetworkProtocol protocol, int port, int secure, const StringRef& reply)
+GCodeResult LwipEthernetInterface::EnableProtocol(NetworkProtocol protocol, int port, int secure, const StringRef& reply) noexcept
 {
 	if (secure != 0 && secure != -1)
 	{
@@ -229,7 +229,7 @@ GCodeResult LwipEthernetInterface::EnableProtocol(NetworkProtocol protocol, int
 	return GCodeResult::error;
 }
 
-GCodeResult LwipEthernetInterface::DisableProtocol(NetworkProtocol protocol, const StringRef& reply)
+GCodeResult LwipEthernetInterface::DisableProtocol(NetworkProtocol protocol, const StringRef& reply) noexcept
 {
 	if (protocol < NumProtocols)
 	{
@@ -246,7 +246,7 @@ GCodeResult LwipEthernetInterface::DisableProtocol(NetworkProtocol protocol, con
 	return GCodeResult::error;
 }
 
-void LwipEthernetInterface::StartProtocol(NetworkProtocol protocol)
+void LwipEthernetInterface::StartProtocol(NetworkProtocol protocol) noexcept
 {
 	if (listeningPcbs[protocol] == nullptr)
 	{
@@ -278,7 +278,7 @@ void LwipEthernetInterface::StartProtocol(NetworkProtocol protocol)
 	}
 }
 
-void LwipEthernetInterface::ShutdownProtocol(NetworkProtocol protocol)
+void LwipEthernetInterface::ShutdownProtocol(NetworkProtocol protocol) noexcept
 {
 #if 0	// chrishamm: Also see Network::Stop
 	for (NetworkResponder* r = responders; r != nullptr; r = r->GetNext())
@@ -317,7 +317,7 @@ void LwipEthernetInterface::ShutdownProtocol(NetworkProtocol protocol)
 }
 
 // Report the protocols and ports in use
-GCodeResult LwipEthernetInterface::ReportProtocols(const StringRef& reply) const
+GCodeResult LwipEthernetInterface::ReportProtocols(const StringRef& reply) const noexcept
 {
 	reply.Clear();
 	for (size_t i = 0; i < NumProtocols; ++i)
@@ -327,7 +327,7 @@ GCodeResult LwipEthernetInterface::ReportProtocols(const StringRef& reply) const
 	return GCodeResult::ok;
 }
 
-void LwipEthernetInterface::ReportOneProtocol(NetworkProtocol protocol, const StringRef& reply) const
+void LwipEthernetInterface::ReportOneProtocol(NetworkProtocol protocol, const StringRef& reply) const noexcept
 {
 	if (protocolEnabled[protocol])
 	{
@@ -341,7 +341,7 @@ void LwipEthernetInterface::ReportOneProtocol(NetworkProtocol protocol, const St
 
 // This is called at the end of config.g processing.
 // Start the network if it was enabled
-void LwipEthernetInterface::Activate()
+void LwipEthernetInterface::Activate() noexcept
 {
 	if (!activated)
 	{
@@ -357,14 +357,14 @@ void LwipEthernetInterface::Activate()
 	}
 }
 
-void LwipEthernetInterface::Exit()
+void LwipEthernetInterface::Exit() noexcept
 {
 	Stop();
 	ethernet_terminate();
 }
 
 // Get the network state into the reply buffer, returning true if there is some sort of error
-GCodeResult LwipEthernetInterface::GetNetworkState(const StringRef& reply)
+GCodeResult LwipEthernetInterface::GetNetworkState(const StringRef& reply) noexcept
 {
 	ethernet_get_ipaddress(ipAddress, netmask, gateway);
 	const int enableState = EnableState();
@@ -375,7 +375,7 @@ GCodeResult LwipEthernetInterface::GetNetworkState(const StringRef& reply)
 }
 
 // Start up the network
-void LwipEthernetInterface::Start()
+void LwipEthernetInterface::Start() noexcept
 {
 #if defined(DUET3)
 	digitalWrite(PhyResetPin, true);			// bring the Ethernet Phy out of reset
@@ -412,7 +412,7 @@ void LwipEthernetInterface::Start()
 }
 
 // Stop the network
-void LwipEthernetInterface::Stop()
+void LwipEthernetInterface::Stop() noexcept
 {
 	if (state != NetworkState::disabled)
 	{
@@ -430,7 +430,7 @@ void LwipEthernetInterface::Stop()
 }
 
 // Main spin loop. If 'full' is true then we are being called from the main spin loop. If false then we are being called during HSMCI idle time.
-void LwipEthernetInterface::Spin()
+void LwipEthernetInterface::Spin() noexcept
 {
 #if LWIP_GMAC_TASK
 	MutexLocker lock(lwipMutex);
@@ -542,7 +542,7 @@ void LwipEthernetInterface::Spin()
 #endif
 }
 
-void LwipEthernetInterface::Interrupt()
+void LwipEthernetInterface::Interrupt() noexcept
 {
 #if !LWIP_GMAC_TASK
 	if (initialised && LockLWIP())
@@ -553,7 +553,7 @@ void LwipEthernetInterface::Interrupt()
 #endif
 }
 
-void LwipEthernetInterface::Diagnostics(MessageType mtype)
+void LwipEthernetInterface::Diagnostics(MessageType mtype) noexcept
 {
 	platform.Message(mtype, "- Ethernet -\n");
 	platform.MessageF(mtype, "State: %d\n", (int)state);
@@ -575,7 +575,7 @@ void LwipEthernetInterface::Diagnostics(MessageType mtype)
 }
 
 // Enable or disable the network. For Ethernet the ssid parameter is not used.
-GCodeResult LwipEthernetInterface::EnableInterface(int mode, const StringRef& ssid, const StringRef& reply)
+GCodeResult LwipEthernetInterface::EnableInterface(int mode, const StringRef& ssid, const StringRef& reply) noexcept
 {
 	if (!activated)
 	{
@@ -598,12 +598,12 @@ GCodeResult LwipEthernetInterface::EnableInterface(int mode, const StringRef& ss
 	return GCodeResult::ok;
 }
 
-int LwipEthernetInterface::EnableState() const
+int LwipEthernetInterface::EnableState() const noexcept
 {
 	return (state == NetworkState::disabled) ? 0 : 1;
 }
 
-bool LwipEthernetInterface::InNetworkStack() const
+bool LwipEthernetInterface::InNetworkStack() const noexcept
 {
 #if LWIP_GMAC_TASK
 	return false;
@@ -612,7 +612,7 @@ bool LwipEthernetInterface::InNetworkStack() const
 #endif
 }
 
-bool LwipEthernetInterface::ConnectionEstablished(tcp_pcb *pcb)
+bool LwipEthernetInterface::ConnectionEstablished(tcp_pcb *pcb) noexcept
 {
 	for (LwipSocket *s : sockets)
 	{
@@ -627,12 +627,12 @@ bool LwipEthernetInterface::ConnectionEstablished(tcp_pcb *pcb)
 	return false;
 }
 
-IPAddress LwipEthernetInterface::GetIPAddress() const
+IPAddress LwipEthernetInterface::GetIPAddress() const noexcept
 {
 	return ipAddress;
 }
 
-void LwipEthernetInterface::SetIPAddress(IPAddress p_ipAddress, IPAddress p_netmask, IPAddress p_gateway)
+void LwipEthernetInterface::SetIPAddress(IPAddress p_ipAddress, IPAddress p_netmask, IPAddress p_gateway) noexcept
 {
 	if (state == NetworkState::obtainingIP || state == NetworkState::active)
 	{
@@ -668,7 +668,7 @@ void LwipEthernetInterface::SetIPAddress(IPAddress p_ipAddress, IPAddress p_netm
 	}
 }
 
-void LwipEthernetInterface::UpdateHostname(const char *hostname)
+void LwipEthernetInterface::UpdateHostname(const char *hostname) noexcept
 {
 	if (initialised)
 	{
@@ -677,12 +677,12 @@ void LwipEthernetInterface::UpdateHostname(const char *hostname)
 	}
 }
 
-void LwipEthernetInterface::SetMacAddress(const uint8_t mac[])
+void LwipEthernetInterface::SetMacAddress(const uint8_t mac[]) noexcept
 {
 	memcpy(macAddress, mac, sizeof(macAddress));
 }
 
-void LwipEthernetInterface::OpenDataPort(Port port)
+void LwipEthernetInterface::OpenDataPort(Port port) noexcept
 {
 	if (listeningPcbs[NumProtocols] != nullptr)
 	{
@@ -699,7 +699,7 @@ void LwipEthernetInterface::OpenDataPort(Port port)
 }
 
 // Close FTP data port and purge associated resources
-void LwipEthernetInterface::TerminateDataPort()
+void LwipEthernetInterface::TerminateDataPort() noexcept
 {
 	if (closeDataPort || !sockets[FtpDataSocketNumber]->IsClosing())
 	{
@@ -720,7 +720,7 @@ void LwipEthernetInterface::TerminateDataPort()
 	}
 }
 
-void LwipEthernetInterface::InitSockets()
+void LwipEthernetInterface::InitSockets() noexcept
 {
 	for (size_t i = 0; i < NumProtocols; ++i)
 	{
@@ -732,7 +732,7 @@ void LwipEthernetInterface::InitSockets()
 	nextSocketToPoll = 0;
 }
 
-void LwipEthernetInterface::TerminateSockets()
+void LwipEthernetInterface::TerminateSockets() noexcept
 {
 	for (LwipSocket *socket : sockets)
 	{
@@ -748,7 +748,7 @@ void GetServiceTxtEntries(struct mdns_service *service, void *txt_userdata)
 	}
 }
 
-void LwipEthernetInterface::RebuildMdnsServices()
+void LwipEthernetInterface::RebuildMdnsServices() noexcept
 {
 	mdns_resp_remove_netif(&gs_net_if);
 	mdns_resp_add_netif(&gs_net_if, reprap.GetNetwork().GetHostname(), MdnsTtl);
diff --git a/src/Networking/LwipEthernet/LwipEthernetInterface.h b/src/Networking/LwipEthernet/LwipEthernetInterface.h
index 94ec30e0..3a4a6f42 100644
--- a/src/Networking/LwipEthernet/LwipEthernetInterface.h
+++ b/src/Networking/LwipEthernet/LwipEthernetInterface.h
@@ -28,36 +28,36 @@ struct tcp_pcb;
 class LwipEthernetInterface : public NetworkInterface
 {
 public:
-	LwipEthernetInterface(Platform& p);
-
-	void Init() override;
-	void Activate() override;
-	void Exit() override;
-	void Spin() override;
-	void Interrupt() override;
-	void Diagnostics(MessageType mtype) override;
-
-	GCodeResult EnableInterface(int mode, const StringRef& ssid, const StringRef& reply) override;			// enable or disable the network
-	GCodeResult EnableProtocol(NetworkProtocol protocol, int port, int secure, const StringRef& reply) override;
-	GCodeResult DisableProtocol(NetworkProtocol protocol, const StringRef& reply) override;
-	GCodeResult ReportProtocols(const StringRef& reply) const override;
-
-	GCodeResult GetNetworkState(const StringRef& reply) override;
-	int EnableState() const override;
-	bool InNetworkStack() const override;
-	bool IsWiFiInterface() const override { return false; }
-
-	void UpdateHostname(const char *hostname) override;
-	IPAddress GetIPAddress() const override;
-	void SetIPAddress(IPAddress p_ipAddress, IPAddress p_netmask, IPAddress p_gateway) override;
-	void SetMacAddress(const uint8_t mac[]) override;
-	const uint8_t *GetMacAddress() const override { return macAddress; }
+	LwipEthernetInterface(Platform& p) noexcept;
+
+	void Init() noexcept override;
+	void Activate() noexcept override;
+	void Exit() noexcept override;
+	void Spin() noexcept override;
+	void Interrupt() noexcept override;
+	void Diagnostics(MessageType mtype) noexcept override;
+
+	GCodeResult EnableInterface(int mode, const StringRef& ssid, const StringRef& reply) noexcept override;			// enable or disable the network
+	GCodeResult EnableProtocol(NetworkProtocol protocol, int port, int secure, const StringRef& reply) noexcept override;
+	GCodeResult DisableProtocol(NetworkProtocol protocol, const StringRef& reply) noexcept override;
+	GCodeResult ReportProtocols(const StringRef& reply) const noexcept override;
+
+	GCodeResult GetNetworkState(const StringRef& reply) noexcept override;
+	int EnableState() const noexcept override;
+	bool InNetworkStack() const noexcept override;
+	bool IsWiFiInterface() const noexcept override { return false; }
+
+	void UpdateHostname(const char *hostname) noexcept override;
+	IPAddress GetIPAddress() const noexcept override;
+	void SetIPAddress(IPAddress p_ipAddress, IPAddress p_netmask, IPAddress p_gateway) noexcept override;
+	void SetMacAddress(const uint8_t mac[]) noexcept override;
+	const uint8_t *GetMacAddress() const noexcept override { return macAddress; }
 
 	// LwIP interfaces
-	bool ConnectionEstablished(tcp_pcb *pcb);
+	bool ConnectionEstablished(tcp_pcb *pcb) noexcept;
 
-	void OpenDataPort(Port port) override;
-	void TerminateDataPort() override;
+	void OpenDataPort(Port port) noexcept override;
+	void TerminateDataPort() noexcept override;
 
 protected:
 	DECLARE_OBJECT_MODEL
@@ -73,20 +73,20 @@ private:
 		active						// network running
 	};
 
-	void Start();
-	void Stop();
-	void InitSockets();
-	void TerminateSockets();
+	void Start() noexcept;
+	void Stop() noexcept;
+	void InitSockets() noexcept;
+	void TerminateSockets() noexcept;
 
-	void RebuildMdnsServices();
+	void RebuildMdnsServices() noexcept;
 
-	void StartProtocol(NetworkProtocol protocol)
+	void StartProtocol(NetworkProtocol protocol) noexcept
 	pre(protocol < NumProtocols);
 
-	void ShutdownProtocol(NetworkProtocol protocol)
+	void ShutdownProtocol(NetworkProtocol protocol) noexcept
 	pre(protocol < NumProtocols);
 
-	void ReportOneProtocol(NetworkProtocol protocol, const StringRef& reply) const
+	void ReportOneProtocol(NetworkProtocol protocol, const StringRef& reply) const noexcept
 	pre(protocol < NumProtocols);
 
 	Platform& platform;
diff --git a/src/Networking/LwipEthernet/LwipSocket.cpp b/src/Networking/LwipEthernet/LwipSocket.cpp
index 69d7bab5..52c5288c 100644
--- a/src/Networking/LwipEthernet/LwipSocket.cpp
+++ b/src/Networking/LwipEthernet/LwipSocket.cpp
@@ -77,13 +77,13 @@ extern void UnlockLWIP();
 
 // LwipSocket class
 
-LwipSocket::LwipSocket(NetworkInterface *iface) : Socket(iface), connectionPcb(nullptr),
+LwipSocket::LwipSocket(NetworkInterface *iface) noexcept : Socket(iface), connectionPcb(nullptr),
 		receivedData(nullptr), state(SocketState::disabled)
 {
 	ReInit();
 }
 
-bool LwipSocket::AcceptConnection(tcp_pcb *pcb)
+bool LwipSocket::AcceptConnection(tcp_pcb *pcb) noexcept
 {
 	if (state == SocketState::listening && pcb->local_port == localPort)
 	{
@@ -104,7 +104,7 @@ bool LwipSocket::AcceptConnection(tcp_pcb *pcb)
 	return false;
 }
 
-void LwipSocket::DataReceived(pbuf *data)
+void LwipSocket::DataReceived(pbuf *data) noexcept
 {
 	if (state != SocketState::closing)
 	{
@@ -125,7 +125,7 @@ void LwipSocket::DataReceived(pbuf *data)
 	}
 }
 
-void LwipSocket::DataSent(size_t numBytes)
+void LwipSocket::DataSent(size_t numBytes) noexcept
 {
 	if (numBytes <= unAcked)
 	{
@@ -144,7 +144,7 @@ void LwipSocket::DataSent(size_t numBytes)
 	}
 }
 
-void LwipSocket::ConnectionClosedGracefully()
+void LwipSocket::ConnectionClosedGracefully() noexcept
 {
 	if (connectionPcb != nullptr)
 	{
@@ -166,7 +166,7 @@ void LwipSocket::ConnectionClosedGracefully()
 	}
 }
 
-void LwipSocket::ConnectionError(err_t err)
+void LwipSocket::ConnectionError(err_t err) noexcept
 {
 	DiscardReceivedData();
 	connectionPcb = nullptr;
@@ -179,7 +179,7 @@ void LwipSocket::ConnectionError(err_t err)
 }
 
 // Initialise a TCP socket
-void LwipSocket::Init(SocketNumber skt, Port serverPort, NetworkProtocol p)
+void LwipSocket::Init(SocketNumber skt, Port serverPort, NetworkProtocol p) noexcept
 {
 	UNUSED(skt);
 	localPort = serverPort;
@@ -189,13 +189,13 @@ void LwipSocket::Init(SocketNumber skt, Port serverPort, NetworkProtocol p)
 	ReInit();
 }
 
-void LwipSocket::TerminateAndDisable()
+void LwipSocket::TerminateAndDisable() noexcept
 {
 	Terminate();
 	state = SocketState::disabled;
 }
 
-void LwipSocket::ReInit()
+void LwipSocket::ReInit() noexcept
 {
 	DiscardReceivedData();
 	whenConnected = whenWritten = whenClosed = 0;
@@ -204,7 +204,7 @@ void LwipSocket::ReInit()
 }
 
 // Close a connection when the last packet has been sent
-void LwipSocket::Close()
+void LwipSocket::Close() noexcept
 {
 	if (state != SocketState::disabled && state != SocketState::listening)
 	{
@@ -223,7 +223,7 @@ void LwipSocket::Close()
 }
 
 // Terminate a connection immediately
-void LwipSocket::Terminate()
+void LwipSocket::Terminate() noexcept
 {
 	if (state != SocketState::disabled)
 	{
@@ -246,19 +246,19 @@ void LwipSocket::Terminate()
 }
 
 // Return true if there is or may soon be more data to read
-bool LwipSocket::CanRead() const
+bool LwipSocket::CanRead() const noexcept
 {
 	return (state == SocketState::connected)
 		|| (state == SocketState::clientDisconnecting && receivedData != nullptr);
 }
 
-bool LwipSocket::CanSend() const
+bool LwipSocket::CanSend() const noexcept
 {
 	return (state == SocketState::connected);
 }
 
 // Read 1 character from the receive buffers, returning true if successful
-bool LwipSocket::ReadChar(char& c)
+bool LwipSocket::ReadChar(char& c) noexcept
 {
 	if (receivedData != nullptr)
 	{
@@ -292,7 +292,7 @@ bool LwipSocket::ReadChar(char& c)
 }
 
 // Return a pointer to data in a buffer and a length available
-bool LwipSocket::ReadBuffer(const uint8_t *&buffer, size_t &len)
+bool LwipSocket::ReadBuffer(const uint8_t *&buffer, size_t &len) noexcept
 {
 	if (receivedData != nullptr)
 	{
@@ -306,7 +306,7 @@ bool LwipSocket::ReadBuffer(const uint8_t *&buffer, size_t &len)
 }
 
 // Flag some data as taken from the receive buffers. We never take data from more than one buffer at a time.
-void LwipSocket::Taken(size_t len)
+void LwipSocket::Taken(size_t len) noexcept
 {
 	if (receivedData != nullptr)
 	{
@@ -333,7 +333,7 @@ void LwipSocket::Taken(size_t len)
 }
 
 // Poll a socket to see if it needs to be serviced
-void LwipSocket::Poll()
+void LwipSocket::Poll() noexcept
 {
 	switch (state)
 	{
@@ -399,7 +399,7 @@ void LwipSocket::Poll()
 }
 
 // Discard any received data for this transaction
-void LwipSocket::DiscardReceivedData()
+void LwipSocket::DiscardReceivedData() noexcept
 {
 	if (receivedData != nullptr)
 	{
@@ -410,7 +410,7 @@ void LwipSocket::DiscardReceivedData()
 }
 
 // Send the data, returning the length buffered
-size_t LwipSocket::Send(const uint8_t *data, size_t length)
+size_t LwipSocket::Send(const uint8_t *data, size_t length) noexcept
 {
 #if LWIP_GMAC_TASK
 	MutexLocker lock(lwipMutex);
diff --git a/src/Networking/LwipEthernet/LwipSocket.h b/src/Networking/LwipEthernet/LwipSocket.h
index 5f9b1f0f..f2e9ef85 100644
--- a/src/Networking/LwipEthernet/LwipSocket.h
+++ b/src/Networking/LwipEthernet/LwipSocket.h
@@ -21,30 +21,30 @@ struct pbuf;
 class LwipSocket : public Socket
 {
 public:
-	LwipSocket(NetworkInterface *iface);
-	int GetState() const { return (int)state; }		// for debugging
+	LwipSocket(NetworkInterface *iface) noexcept;
+	int GetState() const noexcept { return (int)state; }		// for debugging
 
 	// LwIP interfaces
-	bool AcceptConnection(tcp_pcb *pcb);
-	void DataReceived(pbuf *data);
-	void DataSent(size_t numBytes);
-	void ConnectionClosedGracefully();
-	void ConnectionError(err_t err);
+	bool AcceptConnection(tcp_pcb *pcb) noexcept;
+	void DataReceived(pbuf *data) noexcept;
+	void DataSent(size_t numBytes) noexcept;
+	void ConnectionClosedGracefully() noexcept;
+	void ConnectionError(err_t err) noexcept;
 
 	// Inherited members of the Socket class
-	void Init(SocketNumber s, Port serverPort, NetworkProtocol p);
-	void TerminateAndDisable() override;
-	void Poll() override;
-	void Close() override;
-	bool IsClosing() const { return (state == SocketState::closing); }
-	void Terminate() override;
-	bool ReadChar(char& c) override;
-	bool ReadBuffer(const uint8_t *&buffer, size_t &len) override;
-	void Taken(size_t len) override;
-	bool CanRead() const override;
-	bool CanSend() const override;
-	size_t Send(const uint8_t *data, size_t length) override;
-	void Send() override { }
+	void Init(SocketNumber s, Port serverPort, NetworkProtocol p) noexcept;
+	void TerminateAndDisable() noexcept override;
+	void Poll() noexcept override;
+	void Close() noexcept override;
+	bool IsClosing() const noexcept { return (state == SocketState::closing); }
+	void Terminate() noexcept override;
+	bool ReadChar(char& c) noexcept override;
+	bool ReadBuffer(const uint8_t *&buffer, size_t &len) noexcept override;
+	void Taken(size_t len) noexcept override;
+	bool CanRead() const noexcept override;
+	bool CanSend() const noexcept override;
+	size_t Send(const uint8_t *data, size_t length) noexcept override;
+	void Send() noexcept override { }
 
 private:
 	enum class SocketState : uint8_t
@@ -58,8 +58,8 @@ private:
 		aborted
 	};
 
-	void ReInit();
-	void DiscardReceivedData();
+	void ReInit() noexcept;
+	void DiscardReceivedData() noexcept;
 
 	uint32_t whenConnected;
 	uint32_t whenWritten;