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Diffstat (limited to 'Projects/Webserver/Lib/uIPManagement.c')
| -rw-r--r-- | Projects/Webserver/Lib/uIPManagement.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/Projects/Webserver/Lib/uIPManagement.c b/Projects/Webserver/Lib/uIPManagement.c new file mode 100644 index 000000000..dd9f15f42 --- /dev/null +++ b/Projects/Webserver/Lib/uIPManagement.c @@ -0,0 +1,189 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ *
+ * uIP Managament functions. This file contains the functions and globals needed to maintain the uIP
+ * stack once an RNDIS device has been attached to the system.
+ */
+
+#define INCLUDE_FROM_UIPMANAGEMENT_C
+#include "uIPManagement.h"
+
+/** Connection timer, to retain the time elapsed since the last time the uIP connections were managed. */
+struct timer ConnectionTimer;
+
+/** ARP timer, to retain the time elapsed since the ARP cache was last updated. */
+struct timer ARPTimer;
+
+/** MAC address of the RNDIS device, when enumerated */
+struct uip_eth_addr MACAddress;
+
+
+/** Configures the uIP stack ready for network traffic. */
+void uIPManagement_Init(void)
+{
+ /* uIP Timing Initialization */
+ clock_init();
+ timer_set(&ConnectionTimer, CLOCK_SECOND / 2);
+ timer_set(&ARPTimer, CLOCK_SECOND * 10);
+
+ /* uIP Stack Initialization */
+ uip_init();
+
+ /* DHCP/Server IP Settings Initialization */
+ #if defined(ENABLE_DHCP)
+ DHCPApp_Init();
+ #else
+ uip_ipaddr_t IPAddress, Netmask, GatewayIPAddress;
+ uip_ipaddr(&IPAddress, DEVICE_IP_ADDRESS[0], DEVICE_IP_ADDRESS[1], DEVICE_IP_ADDRESS[2], DEVICE_IP_ADDRESS[3]);
+ uip_ipaddr(&Netmask, DEVICE_NETMASK[0], DEVICE_NETMASK[1], DEVICE_NETMASK[2], DEVICE_NETMASK[3]);
+ uip_ipaddr(&GatewayIPAddress, DEVICE_GATEWAY[0], DEVICE_GATEWAY[1], DEVICE_GATEWAY[2], DEVICE_GATEWAY[3]);
+ uip_sethostaddr(&IPAddress);
+ uip_setnetmask(&Netmask);
+ uip_setdraddr(&GatewayIPAddress);
+ #endif
+
+ uip_setethaddr(MACAddress);
+
+ /* HTTP Webserver Initialization */
+ WebserverApp_Init();
+}
+
+/** uIP Management function. This function manages the uIP stack when called while an RNDIS device has been
+ * attached to the system.
+ */
+void uIPManagement_ManageNetwork(void)
+{
+ if ((USB_CurrentMode == USB_MODE_HOST) && (USB_HostState == HOST_STATE_Configured))
+ {
+ uIPManagement_ProcessIncommingPacket();
+ uIPManagement_ManageConnections();
+ }
+}
+
+/** Processes incomming packets to the server from the connected RNDIS device, creating responses as needed. */
+static void uIPManagement_ProcessIncommingPacket(void)
+{
+ if (RNDIS_Host_IsPacketReceived(&Ethernet_RNDIS_Interface))
+ {
+ LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
+
+ /* Read the incomming packet straight into the UIP packet buffer */
+ RNDIS_Host_ReadPacket(&Ethernet_RNDIS_Interface, &uip_buf[0], &uip_len);
+
+ if (uip_len > 0)
+ {
+ bool PacketHandled = true;
+
+ struct uip_eth_hdr* EthernetHeader = (struct uip_eth_hdr*)&uip_buf[0];
+ if (EthernetHeader->type == HTONS(UIP_ETHTYPE_IP))
+ {
+ /* Filter packet by MAC destination */
+ uip_arp_ipin();
+
+ /* Process incomming packet */
+ uip_input();
+
+ /* Add destination MAC to outgoing packet */
+ if (uip_len > 0)
+ uip_arp_out();
+ }
+ else if (EthernetHeader->type == HTONS(UIP_ETHTYPE_ARP))
+ {
+ /* Process ARP packet */
+ uip_arp_arpin();
+ }
+ else
+ {
+ PacketHandled = false;
+ }
+
+ /* If a response was generated, send it */
+ if ((uip_len > 0) && PacketHandled)
+ RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface, &uip_buf[0], uip_len);
+ }
+
+ LEDs_SetAllLEDs(LEDMASK_USB_READY);
+ }
+}
+
+/** Manages the currently open network connections, including TCP and (if enabled) UDP. */
+static void uIPManagement_ManageConnections(void)
+{
+ /* Manage open connections */
+ if (timer_expired(&ConnectionTimer))
+ {
+ timer_reset(&ConnectionTimer);
+
+ LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
+
+ for (uint8_t i = 0; i < UIP_CONNS; i++)
+ {
+ /* Run periodic connection management for each TCP connection */
+ uip_periodic(i);
+
+ /* If a response was generated, send it */
+ if (uip_len > 0)
+ {
+ /* Add destination MAC to outgoing packet */
+ uip_arp_out();
+
+ RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface, &uip_buf[0], uip_len);
+ }
+ }
+
+ #if defined(ENABLE_DHCP)
+ for (uint8_t i = 0; i < UIP_UDP_CONNS; i++)
+ {
+ /* Run periodic connection management for each UDP connection */
+ uip_udp_periodic(i);
+
+ /* If a response was generated, send it */
+ if (uip_len > 0)
+ {
+ /* Add destination MAC to outgoing packet */
+ uip_arp_out();
+
+ RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface, &uip_buf[0], uip_len);
+ }
+ }
+ #endif
+
+ LEDs_SetAllLEDs(LEDMASK_USB_READY);
+ }
+
+ /* Manage ARP cache refreshing */
+ if (timer_expired(&ARPTimer))
+ {
+ timer_reset(&ARPTimer);
+ uip_arp_timer();
+ }
+}
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