-\r
-/**\r
- * \addtogroup uip\r
- * @{\r
- */\r
-\r
-/**\r
- * \file\r
- * Header file for the uIP TCP/IP stack.\r
- * \author Adam Dunkels <adam@dunkels.com>\r
- * \author Julien Abeille <jabeille@cisco.com> (IPv6 related code)\r
- * \author Mathilde Durvy <mdurvy@cisco.com> (IPv6 related code)\r
- *\r
- * The uIP TCP/IP stack header file contains definitions for a number\r
- * of C macros that are used by uIP programs as well as internal uIP\r
- * structures, TCP/IP header structures and function declarations.\r
- *\r
- */\r
-\r
-/*\r
- * Copyright (c) 2001-2003, Adam Dunkels.\r
- * All rights reserved.\r
- *\r
- * Redistribution and use in source and binary forms, with or without\r
- * modification, are permitted provided that the following conditions\r
- * are met:\r
- * 1. Redistributions of source code must retain the above copyright\r
- * notice, this list of conditions and the following disclaimer.\r
- * 2. Redistributions in binary form must reproduce the above copyright\r
- * notice, this list of conditions and the following disclaimer in the\r
- * documentation and/or other materials provided with the distribution.\r
- * 3. The name of the author may not be used to endorse or promote\r
- * products derived from this software without specific prior\r
- * written permission.\r
- *\r
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS\r
- * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\r
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY\r
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE\r
- * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,\r
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING\r
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\r
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
- *\r
- * This file is part of the uIP TCP/IP stack.\r
- *\r
- * $Id: uip.h,v 1.24 2009/04/06 13:18:50 nvt-se Exp $\r
- *\r
- */\r
-\r
-#ifndef __UIP_H__\r
-#define __UIP_H__\r
-\r
-#include "uipopt.h"\r
-\r
-/**\r
- * Representation of an IP address.\r
- *\r
- */\r
-#if UIP_CONF_IPV6\r
-typedef union uip_ip6addr_t {\r
- u8_t u8[16]; /* Initializer, must come first!!! */\r
- u16_t u16[8];\r
-} uip_ip6addr_t;\r
-\r
-typedef uip_ip6addr_t uip_ipaddr_t;\r
-#else /* UIP_CONF_IPV6 */\r
-typedef union uip_ip4addr_t {\r
- u8_t u8[4]; /* Initializer, must come first!!! */\r
- u16_t u16[2];\r
-#if 0\r
- u32_t u32;\r
-#endif\r
-} uip_ip4addr_t;\r
-typedef uip_ip4addr_t uip_ipaddr_t;\r
-#endif /* UIP_CONF_IPV6 */\r
-\r
-\r
-/*---------------------------------------------------------------------------*/\r
-\r
-/** \brief 16 bit 802.15.4 address */\r
-struct uip_802154_shortaddr {\r
- u8_t addr[2];\r
-};\r
-/** \brief 64 bit 802.15.4 address */\r
-struct uip_802154_longaddr {\r
- u8_t addr[8];\r
-};\r
-\r
-/** \brief 802.11 address */\r
-struct uip_80211_addr {\r
- u8_t addr[6];\r
-};\r
-\r
-/** \brief 802.3 address */\r
-struct uip_eth_addr {\r
- u8_t addr[6];\r
-};\r
-\r
-#if UIP_CONF_LL_802154\r
-/** \brief 802.15.4 address */\r
-typedef struct uip_802154_longaddr uip_lladdr_t;\r
-#define UIP_802154_SHORTADDR_LEN 2\r
-#define UIP_802154_LONGADDR_LEN 8\r
-#define UIP_LLADDR_LEN UIP_802154_LONGADDR_LEN\r
-#else /*UIP_CONF_LL_802154*/\r
-#if UIP_CONF_LL_80211\r
-/** \brief 802.11 address */\r
-typedef struct uip_80211_addr uip_lladdr_t;\r
-#define UIP_LLADDR_LEN 6\r
-#else /*UIP_CONF_LL_80211*/\r
-/** \brief Ethernet address */\r
-typedef struct uip_eth_addr uip_lladdr_t;\r
-#define UIP_LLADDR_LEN 6\r
-#endif /*UIP_CONF_LL_80211*/\r
-#endif /*UIP_CONF_LL_802154*/\r
-\r
-/*---------------------------------------------------------------------------*/\r
-/* First, the functions that should be called from the\r
- * system. Initialization, the periodic timer, and incoming packets are\r
- * handled by the following three functions.\r
- */\r
-/**\r
- * \defgroup uipconffunc uIP configuration functions\r
- * @{\r
- *\r
- * The uIP configuration functions are used for setting run-time\r
- * parameters in uIP such as IP addresses.\r
- */\r
-\r
-/**\r
- * Set the IP address of this host.\r
- *\r
- * The IP address is represented as a 4-byte array where the first\r
- * octet of the IP address is put in the first member of the 4-byte\r
- * array.\r
- *\r
- * Example:\r
- \code\r
-\r
- uip_ipaddr_t addr;\r
-\r
- uip_ipaddr(&addr, 192,168,1,2);\r
- uip_sethostaddr(&addr);\r
- \r
- \endcode\r
- * \param addr A pointer to an IP address of type uip_ipaddr_t;\r
- *\r
- * \sa uip_ipaddr()\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_sethostaddr(addr) uip_ipaddr_copy(&uip_hostaddr, (addr))\r
-\r
-/**\r
- * Get the IP address of this host.\r
- *\r
- * The IP address is represented as a 4-byte array where the first\r
- * octet of the IP address is put in the first member of the 4-byte\r
- * array.\r
- *\r
- * Example:\r
- \code\r
- uip_ipaddr_t hostaddr;\r
-\r
- uip_gethostaddr(&hostaddr);\r
- \endcode\r
- * \param addr A pointer to a uip_ipaddr_t variable that will be\r
- * filled in with the currently configured IP address.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_gethostaddr(addr) uip_ipaddr_copy((addr), &uip_hostaddr)\r
-\r
-/**\r
- * Set the default router's IP address.\r
- *\r
- * \param addr A pointer to a uip_ipaddr_t variable containing the IP\r
- * address of the default router.\r
- *\r
- * \sa uip_ipaddr()\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_setdraddr(addr) uip_ipaddr_copy(&uip_draddr, (addr))\r
-\r
-/**\r
- * Set the netmask.\r
- *\r
- * \param addr A pointer to a uip_ipaddr_t variable containing the IP\r
- * address of the netmask.\r
- *\r
- * \sa uip_ipaddr()\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_setnetmask(addr) uip_ipaddr_copy(&uip_netmask, (addr))\r
-\r
-\r
-/**\r
- * Get the default router's IP address.\r
- *\r
- * \param addr A pointer to a uip_ipaddr_t variable that will be\r
- * filled in with the IP address of the default router.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_getdraddr(addr) uip_ipaddr_copy((addr), &uip_draddr)\r
-\r
-/**\r
- * Get the netmask.\r
- *\r
- * \param addr A pointer to a uip_ipaddr_t variable that will be\r
- * filled in with the value of the netmask.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_getnetmask(addr) uip_ipaddr_copy((addr), &uip_netmask)\r
-\r
-/** @} */\r
-\r
-/**\r
- * \defgroup uipinit uIP initialization functions\r
- * @{\r
- *\r
- * The uIP initialization functions are used for booting uIP.\r
- */\r
-\r
-/**\r
- * uIP initialization function.\r
- *\r
- * This function should be called at boot up to initilize the uIP\r
- * TCP/IP stack.\r
- */\r
-void uip_init(void);\r
-\r
-/**\r
- * uIP initialization function.\r
- *\r
- * This function may be used at boot time to set the initial ip_id.\r
- */\r
-void uip_setipid(u16_t id);\r
-\r
-/** @} */\r
-\r
-/**\r
- * \defgroup uipdevfunc uIP device driver functions\r
- * @{\r
- *\r
- * These functions are used by a network device driver for interacting\r
- * with uIP.\r
- */\r
-\r
-/**\r
- * Process an incoming packet.\r
- *\r
- * This function should be called when the device driver has received\r
- * a packet from the network. The packet from the device driver must\r
- * be present in the uip_buf buffer, and the length of the packet\r
- * should be placed in the uip_len variable.\r
- *\r
- * When the function returns, there may be an outbound packet placed\r
- * in the uip_buf packet buffer. If so, the uip_len variable is set to\r
- * the length of the packet. If no packet is to be sent out, the\r
- * uip_len variable is set to 0.\r
- *\r
- * The usual way of calling the function is presented by the source\r
- * code below.\r
- \code\r
- uip_len = devicedriver_poll();\r
- if(uip_len > 0) {\r
- uip_input();\r
- if(uip_len > 0) {\r
- devicedriver_send();\r
- }\r
- }\r
- \endcode\r
- *\r
- * \note If you are writing a uIP device driver that needs ARP\r
- * (Address Resolution Protocol), e.g., when running uIP over\r
- * Ethernet, you will need to call the uIP ARP code before calling\r
- * this function:\r
- \code\r
- #define BUF ((struct uip_eth_hdr *)&uip_buf[0])\r
- uip_len = ethernet_devicedrver_poll();\r
- if(uip_len > 0) {\r
- if(BUF->type == HTONS(UIP_ETHTYPE_IP)) {\r
- uip_arp_ipin();\r
- uip_input();\r
- if(uip_len > 0) {\r
- uip_arp_out();\r
- ethernet_devicedriver_send();\r
- }\r
- } else if(BUF->type == HTONS(UIP_ETHTYPE_ARP)) {\r
- uip_arp_arpin();\r
- if(uip_len > 0) {\r
- ethernet_devicedriver_send();\r
- }\r
- }\r
- \endcode\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_input() uip_process(UIP_DATA)\r
-\r
-\r
-/**\r
- * Periodic processing for a connection identified by its number.\r
- *\r
- * This function does the necessary periodic processing (timers,\r
- * polling) for a uIP TCP conneciton, and should be called when the\r
- * periodic uIP timer goes off. It should be called for every\r
- * connection, regardless of whether they are open of closed.\r
- *\r
- * When the function returns, it may have an outbound packet waiting\r
- * for service in the uIP packet buffer, and if so the uip_len\r
- * variable is set to a value larger than zero. The device driver\r
- * should be called to send out the packet.\r
- *\r
- * The usual way of calling the function is through a for() loop like\r
- * this:\r
- \code\r
- for(i = 0; i < UIP_CONNS; ++i) {\r
- uip_periodic(i);\r
- if(uip_len > 0) {\r
- devicedriver_send();\r
- }\r
- }\r
- \endcode\r
- *\r
- * \note If you are writing a uIP device driver that needs ARP\r
- * (Address Resolution Protocol), e.g., when running uIP over\r
- * Ethernet, you will need to call the uip_arp_out() function before\r
- * calling the device driver:\r
- \code\r
- for(i = 0; i < UIP_CONNS; ++i) {\r
- uip_periodic(i);\r
- if(uip_len > 0) {\r
- uip_arp_out();\r
- ethernet_devicedriver_send();\r
- }\r
- }\r
- \endcode\r
- *\r
- * \param conn The number of the connection which is to be periodically polled.\r
- *\r
- * \hideinitializer\r
- */\r
-#if UIP_TCP\r
-#define uip_periodic(conn) do { uip_conn = &uip_conns[conn]; \\r
- uip_process(UIP_TIMER); } while (0)\r
-\r
-/**\r
- *\r
- *\r
- */\r
-#define uip_conn_active(conn) (uip_conns[conn].tcpstateflags != UIP_CLOSED)\r
-\r
-/**\r
- * Perform periodic processing for a connection identified by a pointer\r
- * to its structure.\r
- *\r
- * Same as uip_periodic() but takes a pointer to the actual uip_conn\r
- * struct instead of an integer as its argument. This function can be\r
- * used to force periodic processing of a specific connection.\r
- *\r
- * \param conn A pointer to the uip_conn struct for the connection to\r
- * be processed.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_periodic_conn(conn) do { uip_conn = conn; \\r
- uip_process(UIP_TIMER); } while (0)\r
-\r
-/**\r
- * Request that a particular connection should be polled.\r
- *\r
- * Similar to uip_periodic_conn() but does not perform any timer\r
- * processing. The application is polled for new data.\r
- *\r
- * \param conn A pointer to the uip_conn struct for the connection to\r
- * be processed.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_poll_conn(conn) do { uip_conn = conn; \\r
- uip_process(UIP_POLL_REQUEST); } while (0)\r
-\r
-#endif /* UIP_TCP */\r
-\r
-#if UIP_UDP\r
-/**\r
- * Periodic processing for a UDP connection identified by its number.\r
- *\r
- * This function is essentially the same as uip_periodic(), but for\r
- * UDP connections. It is called in a similar fashion as the\r
- * uip_periodic() function:\r
- \code\r
- for(i = 0; i < UIP_UDP_CONNS; i++) {\r
- uip_udp_periodic(i);\r
- if(uip_len > 0) {\r
- devicedriver_send();\r
- }\r
- }\r
- \endcode\r
- *\r
- * \note As for the uip_periodic() function, special care has to be\r
- * taken when using uIP together with ARP and Ethernet:\r
- \code\r
- for(i = 0; i < UIP_UDP_CONNS; i++) {\r
- uip_udp_periodic(i);\r
- if(uip_len > 0) {\r
- uip_arp_out();\r
- ethernet_devicedriver_send();\r
- }\r
- }\r
- \endcode\r
- *\r
- * \param conn The number of the UDP connection to be processed.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_udp_periodic(conn) do { uip_udp_conn = &uip_udp_conns[conn]; \\r
- uip_process(UIP_UDP_TIMER); } while(0)\r
-\r
-/**\r
- * Periodic processing for a UDP connection identified by a pointer to\r
- * its structure.\r
- *\r
- * Same as uip_udp_periodic() but takes a pointer to the actual\r
- * uip_conn struct instead of an integer as its argument. This\r
- * function can be used to force periodic processing of a specific\r
- * connection.\r
- *\r
- * \param conn A pointer to the uip_udp_conn struct for the connection\r
- * to be processed.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_udp_periodic_conn(conn) do { uip_udp_conn = conn; \\r
- uip_process(UIP_UDP_TIMER); } while(0)\r
-#endif /* UIP_UDP */\r
-\r
-/** \brief Abandon the reassembly of the current packet */\r
-void uip_reass_over(void);\r
-\r
-/**\r
- * The uIP packet buffer.\r
- *\r
- * The uip_buf array is used to hold incoming and outgoing\r
- * packets. The device driver should place incoming data into this\r
- * buffer. When sending data, the device driver should read the link\r
- * level headers and the TCP/IP headers from this buffer. The size of\r
- * the link level headers is configured by the UIP_LLH_LEN define.\r
- *\r
- * \note The application data need not be placed in this buffer, so\r
- * the device driver must read it from the place pointed to by the\r
- * uip_appdata pointer as illustrated by the following example:\r
- \code\r
- void\r
- devicedriver_send(void)\r
- {\r
- hwsend(&uip_buf[0], UIP_LLH_LEN);\r
- if(uip_len <= UIP_LLH_LEN + UIP_TCPIP_HLEN) {\r
- hwsend(&uip_buf[UIP_LLH_LEN], uip_len - UIP_LLH_LEN);\r
- } else {\r
- hwsend(&uip_buf[UIP_LLH_LEN], UIP_TCPIP_HLEN);\r
- hwsend(uip_appdata, uip_len - UIP_TCPIP_HLEN - UIP_LLH_LEN);\r
- }\r
- }\r
- \endcode\r
-*/\r
-extern u8_t uip_buf[UIP_BUFSIZE+2];\r
-\r
-\r
-\r
-/** @} */\r
-\r
-/*---------------------------------------------------------------------------*/\r
-/* Functions that are used by the uIP application program. Opening and\r
- * closing connections, sending and receiving data, etc. is all\r
- * handled by the functions below.\r
- */\r
-/**\r
- * \defgroup uipappfunc uIP application functions\r
- * @{\r
- *\r
- * Functions used by an application running of top of uIP.\r
- */\r
-\r
-/**\r
- * Start listening to the specified port.\r
- *\r
- * \note Since this function expects the port number in network byte\r
- * order, a conversion using HTONS() or htons() is necessary.\r
- *\r
- \code\r
- uip_listen(HTONS(80));\r
- \endcode\r
- *\r
- * \param port A 16-bit port number in network byte order.\r
- */\r
-void uip_listen(u16_t port);\r
-\r
-/**\r
- * Stop listening to the specified port.\r
- *\r
- * \note Since this function expects the port number in network byte\r
- * order, a conversion using HTONS() or htons() is necessary.\r
- *\r
- \code\r
- uip_unlisten(HTONS(80));\r
- \endcode\r
- *\r
- * \param port A 16-bit port number in network byte order.\r
- */\r
-void uip_unlisten(u16_t port);\r
-\r
-/**\r
- * Connect to a remote host using TCP.\r
- *\r
- * This function is used to start a new connection to the specified\r
- * port on the specified host. It allocates a new connection identifier,\r
- * sets the connection to the SYN_SENT state and sets the\r
- * retransmission timer to 0. This will cause a TCP SYN segment to be\r
- * sent out the next time this connection is periodically processed,\r
- * which usually is done within 0.5 seconds after the call to\r
- * uip_connect().\r
- *\r
- * \note This function is available only if support for active open\r
- * has been configured by defining UIP_ACTIVE_OPEN to 1 in uipopt.h.\r
- *\r
- * \note Since this function requires the port number to be in network\r
- * byte order, a conversion using HTONS() or htons() is necessary.\r
- *\r
- \code\r
- uip_ipaddr_t ipaddr;\r
-\r
- uip_ipaddr(&ipaddr, 192,168,1,2);\r
- uip_connect(&ipaddr, HTONS(80));\r
- \endcode\r
- *\r
- * \param ripaddr The IP address of the remote host.\r
- *\r
- * \param port A 16-bit port number in network byte order.\r
- *\r
- * \return A pointer to the uIP connection identifier for the new connection,\r
- * or NULL if no connection could be allocated.\r
- *\r
- */\r
-struct uip_conn *uip_connect(uip_ipaddr_t *ripaddr, u16_t port);\r
-\r
-\r
-\r
-/**\r
- * \internal\r
- *\r
- * Check if a connection has outstanding (i.e., unacknowledged) data.\r
- *\r
- * \param conn A pointer to the uip_conn structure for the connection.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_outstanding(conn) ((conn)->len)\r
-\r
-/**\r
- * Send data on the current connection.\r
- *\r
- * This function is used to send out a single segment of TCP\r
- * data. Only applications that have been invoked by uIP for event\r
- * processing can send data.\r
- *\r
- * The amount of data that actually is sent out after a call to this\r
- * function is determined by the maximum amount of data TCP allows. uIP\r
- * will automatically crop the data so that only the appropriate\r
- * amount of data is sent. The function uip_mss() can be used to query\r
- * uIP for the amount of data that actually will be sent.\r
- *\r
- * \note This function does not guarantee that the sent data will\r
- * arrive at the destination. If the data is lost in the network, the\r
- * application will be invoked with the uip_rexmit() event being\r
- * set. The application will then have to resend the data using this\r
- * function.\r
- *\r
- * \param data A pointer to the data which is to be sent.\r
- *\r
- * \param len The maximum amount of data bytes to be sent.\r
- *\r
- * \hideinitializer\r
- */\r
-void uip_send(const void *data, int len);\r
-\r
-/**\r
- * The length of any incoming data that is currently available (if available)\r
- * in the uip_appdata buffer.\r
- *\r
- * The test function uip_data() must first be used to check if there\r
- * is any data available at all.\r
- *\r
- * \hideinitializer\r
- */\r
-/*void uip_datalen(void);*/\r
-#define uip_datalen() uip_len\r
-\r
-/**\r
- * The length of any out-of-band data (urgent data) that has arrived\r
- * on the connection.\r
- *\r
- * \note The configuration parameter UIP_URGDATA must be set for this\r
- * function to be enabled.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_urgdatalen() uip_urglen\r
-\r
-/**\r
- * Close the current connection.\r
- *\r
- * This function will close the current connection in a nice way.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_close() (uip_flags = UIP_CLOSE)\r
-\r
-/**\r
- * Abort the current connection.\r
- *\r
- * This function will abort (reset) the current connection, and is\r
- * usually used when an error has occurred that prevents using the\r
- * uip_close() function.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_abort() (uip_flags = UIP_ABORT)\r
-\r
-/**\r
- * Tell the sending host to stop sending data.\r
- *\r
- * This function will close our receiver's window so that we stop\r
- * receiving data for the current connection.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_stop() (uip_conn->tcpstateflags |= UIP_STOPPED)\r
-\r
-/**\r
- * Find out if the current connection has been previously stopped with\r
- * uip_stop().\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_stopped(conn) ((conn)->tcpstateflags & UIP_STOPPED)\r
-\r
-/**\r
- * Restart the current connection, if is has previously been stopped\r
- * with uip_stop().\r
- *\r
- * This function will open the receiver's window again so that we\r
- * start receiving data for the current connection.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_restart() do { uip_flags |= UIP_NEWDATA; \\r
- uip_conn->tcpstateflags &= ~UIP_STOPPED; \\r
- } while(0)\r
-\r
-\r
-/* uIP tests that can be made to determine in what state the current\r
- connection is, and what the application function should do. */\r
-\r
-/**\r
- * Is the current connection a UDP connection?\r
- *\r
- * This function checks whether the current connection is a UDP connection.\r
- *\r
- * \hideinitializer\r
- *\r
- */\r
-#define uip_udpconnection() (uip_conn == NULL)\r
-\r
-/**\r
- * Is new incoming data available?\r
- *\r
- * Will reduce to non-zero if there is new data for the application\r
- * present at the uip_appdata pointer. The size of the data is\r
- * available through the uip_len variable.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_newdata() (uip_flags & UIP_NEWDATA)\r
-\r
-/**\r
- * Has previously sent data been acknowledged?\r
- *\r
- * Will reduce to non-zero if the previously sent data has been\r
- * acknowledged by the remote host. This means that the application\r
- * can send new data.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_acked() (uip_flags & UIP_ACKDATA)\r
-\r
-/**\r
- * Has the connection just been connected?\r
- *\r
- * Reduces to non-zero if the current connection has been connected to\r
- * a remote host. This will happen both if the connection has been\r
- * actively opened (with uip_connect()) or passively opened (with\r
- * uip_listen()).\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_connected() (uip_flags & UIP_CONNECTED)\r
-\r
-/**\r
- * Has the connection been closed by the other end?\r
- *\r
- * Is non-zero if the connection has been closed by the remote\r
- * host. The application may then do the necessary clean-ups.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_closed() (uip_flags & UIP_CLOSE)\r
-\r
-/**\r
- * Has the connection been aborted by the other end?\r
- *\r
- * Non-zero if the current connection has been aborted (reset) by the\r
- * remote host.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_aborted() (uip_flags & UIP_ABORT)\r
-\r
-/**\r
- * Has the connection timed out?\r
- *\r
- * Non-zero if the current connection has been aborted due to too many\r
- * retransmissions.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_timedout() (uip_flags & UIP_TIMEDOUT)\r
-\r
-/**\r
- * Do we need to retransmit previously data?\r
- *\r
- * Reduces to non-zero if the previously sent data has been lost in\r
- * the network, and the application should retransmit it. The\r
- * application should send the exact same data as it did the last\r
- * time, using the uip_send() function.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_rexmit() (uip_flags & UIP_REXMIT)\r
-\r
-/**\r
- * Is the connection being polled by uIP?\r
- *\r
- * Is non-zero if the reason the application is invoked is that the\r
- * current connection has been idle for a while and should be\r
- * polled.\r
- *\r
- * The polling event can be used for sending data without having to\r
- * wait for the remote host to send data.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_poll() (uip_flags & UIP_POLL)\r
-\r
-/**\r
- * Get the initial maximum segment size (MSS) of the current\r
- * connection.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_initialmss() (uip_conn->initialmss)\r
-\r
-/**\r
- * Get the current maximum segment size that can be sent on the current\r
- * connection.\r
- *\r
- * The current maximum segment size that can be sent on the\r
- * connection is computed from the receiver's window and the MSS of\r
- * the connection (which also is available by calling\r
- * uip_initialmss()).\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_mss() (uip_conn->mss)\r
-\r
-/**\r
- * Set up a new UDP connection.\r
- *\r
- * This function sets up a new UDP connection. The function will\r
- * automatically allocate an unused local port for the new\r
- * connection. However, another port can be chosen by using the\r
- * uip_udp_bind() call, after the uip_udp_new() function has been\r
- * called.\r
- *\r
- * Example:\r
- \code\r
- uip_ipaddr_t addr;\r
- struct uip_udp_conn *c;\r
- \r
- uip_ipaddr(&addr, 192,168,2,1);\r
- c = uip_udp_new(&addr, HTONS(12345));\r
- if(c != NULL) {\r
- uip_udp_bind(c, HTONS(12344));\r
- }\r
- \endcode\r
- * \param ripaddr The IP address of the remote host.\r
- *\r
- * \param rport The remote port number in network byte order.\r
- *\r
- * \return The uip_udp_conn structure for the new connection or NULL\r
- * if no connection could be allocated.\r
- */\r
-struct uip_udp_conn *uip_udp_new(const uip_ipaddr_t *ripaddr, u16_t rport);\r
-\r
-/**\r
- * Removed a UDP connection.\r
- *\r
- * \param conn A pointer to the uip_udp_conn structure for the connection.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_udp_remove(conn) (conn)->lport = 0\r
-\r
-/**\r
- * Bind a UDP connection to a local port.\r
- *\r
- * \param conn A pointer to the uip_udp_conn structure for the\r
- * connection.\r
- *\r
- * \param port The local port number, in network byte order.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_udp_bind(conn, port) (conn)->lport = port\r
-\r
-/**\r
- * Send a UDP datagram of length len on the current connection.\r
- *\r
- * This function can only be called in response to a UDP event (poll\r
- * or newdata). The data must be present in the uip_buf buffer, at the\r
- * place pointed to by the uip_appdata pointer.\r
- *\r
- * \param len The length of the data in the uip_buf buffer.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_udp_send(len) uip_send((char *)uip_appdata, len)\r
-\r
-/** @} */\r
-\r
-/* uIP convenience and converting functions. */\r
-\r
-/**\r
- * \defgroup uipconvfunc uIP conversion functions\r
- * @{\r
- *\r
- * These functions can be used for converting between different data\r
- * formats used by uIP.\r
- */\r
- \r
-/**\r
- * Convert an IP address to four bytes separated by commas.\r
- *\r
- * Example:\r
- \code\r
- uip_ipaddr_t ipaddr;\r
- printf("ipaddr=%d.%d.%d.%d\n", uip_ipaddr_to_quad(&ipaddr));\r
- \endcode\r
- *\r
- * \param a A pointer to a uip_ipaddr_t.\r
- * \hideinitializer\r
- */\r
-#define uip_ipaddr_to_quad(a) (a)->u8[0],(a)->u8[1],(a)->u8[2],(a)->u8[3]\r
-\r
-/**\r
- * Construct an IP address from four bytes.\r
- *\r
- * This function constructs an IP address of the type that uIP handles\r
- * internally from four bytes. The function is handy for specifying IP\r
- * addresses to use with e.g. the uip_connect() function.\r
- *\r
- * Example:\r
- \code\r
- uip_ipaddr_t ipaddr;\r
- struct uip_conn *c;\r
- \r
- uip_ipaddr(&ipaddr, 192,168,1,2);\r
- c = uip_connect(&ipaddr, HTONS(80));\r
- \endcode\r
- *\r
- * \param addr A pointer to a uip_ipaddr_t variable that will be\r
- * filled in with the IP address.\r
- *\r
- * \param addr0 The first octet of the IP address.\r
- * \param addr1 The second octet of the IP address.\r
- * \param addr2 The third octet of the IP address.\r
- * \param addr3 The forth octet of the IP address.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_ipaddr(addr, addr0,addr1,addr2,addr3) do { \\r
- (addr)->u8[0] = addr0; \\r
- (addr)->u8[1] = addr1; \\r
- (addr)->u8[2] = addr2; \\r
- (addr)->u8[3] = addr3; \\r
- } while(0)\r
-\r
-/**\r
- * Construct an IPv6 address from eight 16-bit words.\r
- *\r
- * This function constructs an IPv6 address.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_ip6addr(addr, addr0,addr1,addr2,addr3,addr4,addr5,addr6,addr7) do { \\r
- (addr)->u16[0] = HTONS(addr0); \\r
- (addr)->u16[1] = HTONS(addr1); \\r
- (addr)->u16[2] = HTONS(addr2); \\r
- (addr)->u16[3] = HTONS(addr3); \\r
- (addr)->u16[4] = HTONS(addr4); \\r
- (addr)->u16[5] = HTONS(addr5); \\r
- (addr)->u16[6] = HTONS(addr6); \\r
- (addr)->u16[7] = HTONS(addr7); \\r
- } while(0)\r
-\r
-/**\r
- * Construct an IPv6 address from eight 8-bit words.\r
- *\r
- * This function constructs an IPv6 address.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_ip6addr_u8(addr, addr0,addr1,addr2,addr3,addr4,addr5,addr6,addr7,addr8,addr9,addr10,addr11,addr12,addr13,addr14,addr15) do { \\r
- (addr)->u8[0] = addr0; \\r
- (addr)->u8[1] = addr1; \\r
- (addr)->u8[2] = addr2; \\r
- (addr)->u8[3] = addr3; \\r
- (addr)->u8[4] = addr4; \\r
- (addr)->u8[5] = addr5; \\r
- (addr)->u8[6] = addr6; \\r
- (addr)->u8[7] = addr7; \\r
- (addr)->u8[8] = addr8; \\r
- (addr)->u8[9] = addr9; \\r
- (addr)->u8[10] = addr10; \\r
- (addr)->u8[11] = addr11; \\r
- (addr)->u8[12] = addr12; \\r
- (addr)->u8[13] = addr13; \\r
- (addr)->u8[14] = addr14; \\r
- (addr)->u8[15] = addr15; \\r
- } while(0)\r
-\r
-\r
-/**\r
- * Copy an IP address to another IP address.\r
- *\r
- * Copies an IP address from one place to another.\r
- *\r
- * Example:\r
- \code\r
- uip_ipaddr_t ipaddr1, ipaddr2;\r
-\r
- uip_ipaddr(&ipaddr1, 192,16,1,2);\r
- uip_ipaddr_copy(&ipaddr2, &ipaddr1);\r
- \endcode\r
- *\r
- * \param dest The destination for the copy.\r
- * \param src The source from where to copy.\r
- *\r
- * \hideinitializer\r
- */\r
-#ifndef uip_ipaddr_copy\r
-#define uip_ipaddr_copy(dest, src) (*(dest) = *(src))\r
-#endif\r
-\r
-/**\r
- * Compare two IP addresses\r
- *\r
- * Compares two IP addresses.\r
- *\r
- * Example:\r
- \code\r
- uip_ipaddr_t ipaddr1, ipaddr2;\r
-\r
- uip_ipaddr(&ipaddr1, 192,16,1,2);\r
- if(uip_ipaddr_cmp(&ipaddr2, &ipaddr1)) {\r
- printf("They are the same");\r
- }\r
- \endcode\r
- *\r
- * \param addr1 The first IP address.\r
- * \param addr2 The second IP address.\r
- *\r
- * \hideinitializer\r
- */\r
-#if !UIP_CONF_IPV6\r
-#define uip_ipaddr_cmp(addr1, addr2) ((addr1)->u16[0] == (addr2)->u16[0] && \\r
- (addr1)->u16[1] == (addr2)->u16[1])\r
-#else /* !UIP_CONF_IPV6 */\r
-#define uip_ipaddr_cmp(addr1, addr2) (memcmp(addr1, addr2, sizeof(uip_ip6addr_t)) == 0)\r
-#endif /* !UIP_CONF_IPV6 */\r
-\r
-/**\r
- * Compare two IP addresses with netmasks\r
- *\r
- * Compares two IP addresses with netmasks. The masks are used to mask\r
- * out the bits that are to be compared.\r
- *\r
- * Example:\r
- \code\r
- uip_ipaddr_t ipaddr1, ipaddr2, mask;\r
-\r
- uip_ipaddr(&mask, 255,255,255,0);\r
- uip_ipaddr(&ipaddr1, 192,16,1,2);\r
- uip_ipaddr(&ipaddr2, 192,16,1,3);\r
- if(uip_ipaddr_maskcmp(&ipaddr1, &ipaddr2, &mask)) {\r
- printf("They are the same");\r
- }\r
- \endcode\r
- *\r
- * \param addr1 The first IP address.\r
- * \param addr2 The second IP address.\r
- * \param mask The netmask.\r
- *\r
- * \hideinitializer\r
- */\r
-#if !UIP_CONF_IPV6\r
-#define uip_ipaddr_maskcmp(addr1, addr2, mask) \\r
- (((((u16_t *)addr1)[0] & ((u16_t *)mask)[0]) == \\r
- (((u16_t *)addr2)[0] & ((u16_t *)mask)[0])) && \\r
- ((((u16_t *)addr1)[1] & ((u16_t *)mask)[1]) == \\r
- (((u16_t *)addr2)[1] & ((u16_t *)mask)[1])))\r
-#else\r
-#define uip_ipaddr_prefixcmp(addr1, addr2, length) (memcmp(addr1, addr2, length>>3) == 0)\r
-#endif\r
-\r
-\r
-/**\r
- * Check if an address is a broadcast address for a network.\r
- *\r
- * Checks if an address is the broadcast address for a network. The\r
- * network is defined by an IP address that is on the network and the\r
- * network's netmask.\r
- *\r
- * \param addr The IP address.\r
- * \param netaddr The network's IP address.\r
- * \param netmask The network's netmask.\r
- *\r
- * \hideinitializer\r
- */\r
-/*#define uip_ipaddr_isbroadcast(addr, netaddr, netmask)\r
- ((uip_ipaddr_t *)(addr)).u16 & ((uip_ipaddr_t *)(addr)).u16*/\r
-\r
-\r
-\r
-/**\r
- * Mask out the network part of an IP address.\r
- *\r
- * Masks out the network part of an IP address, given the address and\r
- * the netmask.\r
- *\r
- * Example:\r
- \code\r
- uip_ipaddr_t ipaddr1, ipaddr2, netmask;\r
-\r
- uip_ipaddr(&ipaddr1, 192,16,1,2);\r
- uip_ipaddr(&netmask, 255,255,255,0);\r
- uip_ipaddr_mask(&ipaddr2, &ipaddr1, &netmask);\r
- \endcode\r
- *\r
- * In the example above, the variable "ipaddr2" will contain the IP\r
- * address 192.168.1.0.\r
- *\r
- * \param dest Where the result is to be placed.\r
- * \param src The IP address.\r
- * \param mask The netmask.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_ipaddr_mask(dest, src, mask) do { \\r
- ((u16_t *)dest)[0] = ((u16_t *)src)[0] & ((u16_t *)mask)[0]; \\r
- ((u16_t *)dest)[1] = ((u16_t *)src)[1] & ((u16_t *)mask)[1]; \\r
- } while(0)\r
-\r
-/**\r
- * Pick the first octet of an IP address.\r
- *\r
- * Picks out the first octet of an IP address.\r
- *\r
- * Example:\r
- \code\r
- uip_ipaddr_t ipaddr;\r
- u8_t octet;\r
-\r
- uip_ipaddr(&ipaddr, 1,2,3,4);\r
- octet = uip_ipaddr1(&ipaddr);\r
- \endcode\r
- *\r
- * In the example above, the variable "octet" will contain the value 1.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_ipaddr1(addr) ((addr)->u8[0])\r
-\r
-/**\r
- * Pick the second octet of an IP address.\r
- *\r
- * Picks out the second octet of an IP address.\r
- *\r
- * Example:\r
- \code\r
- uip_ipaddr_t ipaddr;\r
- u8_t octet;\r
-\r
- uip_ipaddr(&ipaddr, 1,2,3,4);\r
- octet = uip_ipaddr2(&ipaddr);\r
- \endcode\r
- *\r
- * In the example above, the variable "octet" will contain the value 2.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_ipaddr2(addr) ((addr)->u8[1])\r
-\r
-/**\r
- * Pick the third octet of an IP address.\r
- *\r
- * Picks out the third octet of an IP address.\r
- *\r
- * Example:\r
- \code\r
- uip_ipaddr_t ipaddr;\r
- u8_t octet;\r
-\r
- uip_ipaddr(&ipaddr, 1,2,3,4);\r
- octet = uip_ipaddr3(&ipaddr);\r
- \endcode\r
- *\r
- * In the example above, the variable "octet" will contain the value 3.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_ipaddr3(addr) ((addr)->u8[2])\r
-\r
-/**\r
- * Pick the fourth octet of an IP address.\r
- *\r
- * Picks out the fourth octet of an IP address.\r
- *\r
- * Example:\r
- \code\r
- uip_ipaddr_t ipaddr;\r
- u8_t octet;\r
-\r
- uip_ipaddr(&ipaddr, 1,2,3,4);\r
- octet = uip_ipaddr4(&ipaddr);\r
- \endcode\r
- *\r
- * In the example above, the variable "octet" will contain the value 4.\r
- *\r
- * \hideinitializer\r
- */\r
-#define uip_ipaddr4(addr) ((addr)->u8[3])\r
-\r
-/**\r
- * Convert 16-bit quantity from host byte order to network byte order.\r
- *\r
- * This macro is primarily used for converting constants from host\r
- * byte order to network byte order. For converting variables to\r
- * network byte order, use the htons() function instead.\r
- *\r
- * \hideinitializer\r
- */\r
-#ifndef HTONS\r
-# if UIP_BYTE_ORDER == UIP_BIG_ENDIAN\r
-# define HTONS(n) (n)\r
-# define HTONL(n) (n)\r
-# else /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */\r
-# define HTONS(n) (u16_t)((((u16_t) (n)) << 8) | (((u16_t) (n)) >> 8))\r
-# define HTONL(n) (((u32_t)HTONS(n) << 16) | HTONS((u32_t)(n) >> 16))\r
-# endif /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */\r
-#else\r
-#error "HTONS already defined!"\r
-#endif /* HTONS */\r
-\r
-/**\r
- * Convert 16-bit quantity from host byte order to network byte order.\r
- *\r
- * This function is primarily used for converting variables from host\r
- * byte order to network byte order. For converting constants to\r
- * network byte order, use the HTONS() macro instead.\r
- */\r
-#ifndef htons\r
-u16_t htons(u16_t val);\r
-#endif /* htons */\r
-#ifndef ntohs\r
-#define ntohs htons\r
-#endif\r
-\r
-#ifndef htonl\r
-u32_t htonl(u32_t val);\r
-#endif /* htonl */\r
-#ifndef ntohl\r
-#define ntohl htonl\r
-#endif\r
-\r
-/** @} */\r
-\r
-/**\r
- * Pointer to the application data in the packet buffer.\r
- *\r
- * This pointer points to the application data when the application is\r
- * called. If the application wishes to send data, the application may\r
- * use this space to write the data into before calling uip_send().\r
- */\r
-extern void *uip_appdata;\r
-\r
-#if UIP_URGDATA > 0\r
-/* u8_t *uip_urgdata:\r
- *\r
- * This pointer points to any urgent data that has been received. Only\r
- * present if compiled with support for urgent data (UIP_URGDATA).\r
- */\r
-extern void *uip_urgdata;\r
-#endif /* UIP_URGDATA > 0 */\r
-\r
-\r
-/**\r
- * \defgroup uipdrivervars Variables used in uIP device drivers\r
- * @{\r
- *\r
- * uIP has a few global variables that are used in device drivers for\r
- * uIP.\r
- */\r
-\r
-/**\r
- * The length of the packet in the uip_buf buffer.\r
- *\r
- * The global variable uip_len holds the length of the packet in the\r
- * uip_buf buffer.\r
- *\r
- * When the network device driver calls the uIP input function,\r
- * uip_len should be set to the length of the packet in the uip_buf\r
- * buffer.\r
- *\r
- * When sending packets, the device driver should use the contents of\r
- * the uip_len variable to determine the length of the outgoing\r
- * packet.\r
- *\r
- */\r
-extern u16_t uip_len;\r
-\r
-/**\r
- * The length of the extension headers\r
- */\r
-extern u8_t uip_ext_len;\r
-/** @} */\r
-\r
-#if UIP_URGDATA > 0\r
-extern u16_t uip_urglen, uip_surglen;\r
-#endif /* UIP_URGDATA > 0 */\r
-\r
-\r
-/**\r
- * Representation of a uIP TCP connection.\r
- *\r
- * The uip_conn structure is used for identifying a connection. All\r
- * but one field in the structure are to be considered read-only by an\r
- * application. The only exception is the appstate field whose purpose\r
- * is to let the application store application-specific state (e.g.,\r
- * file pointers) for the connection. The type of this field is\r
- * configured in the "uipopt.h" header file.\r
- */\r
-struct uip_conn {\r
- uip_ipaddr_t ripaddr; /**< The IP address of the remote host. */\r
- \r
- u16_t lport; /**< The local TCP port, in network byte order. */\r
- u16_t rport; /**< The local remote TCP port, in network byte\r
- order. */\r
- \r
- u8_t rcv_nxt[4]; /**< The sequence number that we expect to\r
- receive next. */\r
- u8_t snd_nxt[4]; /**< The sequence number that was last sent by\r
- us. */\r
- u16_t len; /**< Length of the data that was previously sent. */\r
- u16_t mss; /**< Current maximum segment size for the\r
- connection. */\r
- u16_t initialmss; /**< Initial maximum segment size for the\r
- connection. */\r
- u8_t sa; /**< Retransmission time-out calculation state\r
- variable. */\r
- u8_t sv; /**< Retransmission time-out calculation state\r
- variable. */\r
- u8_t rto; /**< Retransmission time-out. */\r
- u8_t tcpstateflags; /**< TCP state and flags. */\r
- u8_t timer; /**< The retransmission timer. */\r
- u8_t nrtx; /**< The number of retransmissions for the last\r
- segment sent. */\r
-\r
- /** The application state. */\r
- uip_tcp_appstate_t appstate;\r
-};\r
-\r
-\r
-/**\r
- * Pointer to the current TCP connection.\r
- *\r
- * The uip_conn pointer can be used to access the current TCP\r
- * connection.\r
- */\r
-\r
-extern struct uip_conn *uip_conn;\r
-#if UIP_TCP\r
-/* The array containing all uIP connections. */\r
-extern struct uip_conn uip_conns[UIP_CONNS];\r
-#endif\r
-\r
-/**\r
- * \addtogroup uiparch\r
- * @{\r
- */\r
-\r
-/**\r
- * 4-byte array used for the 32-bit sequence number calculations.\r
- */\r
-extern u8_t uip_acc32[4];\r
-/** @} */\r
-\r
-/**\r
- * Representation of a uIP UDP connection.\r
- */\r
-struct uip_udp_conn {\r
- uip_ipaddr_t ripaddr; /**< The IP address of the remote peer. */\r
- u16_t lport; /**< The local port number in network byte order. */\r
- u16_t rport; /**< The remote port number in network byte order. */\r
- u8_t ttl; /**< Default time-to-live. */\r
-\r
- /** The application state. */\r
- uip_udp_appstate_t appstate;\r
-};\r
-\r
-/**\r
- * The current UDP connection.\r
- */\r
-extern struct uip_udp_conn *uip_udp_conn;\r
-extern struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];\r
-\r
-struct uip_router {\r
- int (*activate)(void);\r
- int (*deactivate)(void);\r
- uip_ipaddr_t *(*lookup)(uip_ipaddr_t *destipaddr, uip_ipaddr_t *nexthop);\r
-};\r
-\r
-#if UIP_CONF_ROUTER\r
-extern const struct uip_router *uip_router;\r
-\r
-/**\r
- * uIP routing driver registration function.\r
- */\r
-void uip_router_register(const struct uip_router *router);\r
-#endif /*UIP_CONF_ROUTER*/\r
-\r
-#if UIP_CONF_ICMP6\r
-struct uip_icmp6_conn {\r
- uip_icmp6_appstate_t appstate;\r
-};\r
-extern struct uip_icmp6_conn uip_icmp6_conns;\r
-#endif /*UIP_CONF_ICMP6*/\r
-\r
-/**\r
- * The uIP TCP/IP statistics.\r
- *\r
- * This is the variable in which the uIP TCP/IP statistics are gathered.\r
- */\r
-#if UIP_STATISTICS == 1\r
-extern struct uip_stats uip_stat;\r
-#define UIP_STAT(s) s\r
-#else\r
-#define UIP_STAT(s)\r
-#endif /* UIP_STATISTICS == 1 */\r
-\r
-/**\r
- * The structure holding the TCP/IP statistics that are gathered if\r
- * UIP_STATISTICS is set to 1.\r
- *\r
- */\r
-struct uip_stats {\r
- struct {\r
- uip_stats_t recv; /**< Number of received packets at the IP\r
- layer. */\r
- uip_stats_t sent; /**< Number of sent packets at the IP\r
- layer. */\r
- uip_stats_t forwarded;/**< Number of forwarded packets at the IP \r
- layer. */\r
- uip_stats_t drop; /**< Number of dropped packets at the IP\r
- layer. */\r
- uip_stats_t vhlerr; /**< Number of packets dropped due to wrong\r
- IP version or header length. */\r
- uip_stats_t hblenerr; /**< Number of packets dropped due to wrong\r
- IP length, high byte. */\r
- uip_stats_t lblenerr; /**< Number of packets dropped due to wrong\r
- IP length, low byte. */\r
- uip_stats_t fragerr; /**< Number of packets dropped since they\r
- were IP fragments. */\r
- uip_stats_t chkerr; /**< Number of packets dropped due to IP\r
- checksum errors. */\r
- uip_stats_t protoerr; /**< Number of packets dropped since they\r
- were neither ICMP, UDP nor TCP. */\r
- } ip; /**< IP statistics. */\r
- struct {\r
- uip_stats_t recv; /**< Number of received ICMP packets. */\r
- uip_stats_t sent; /**< Number of sent ICMP packets. */\r
- uip_stats_t drop; /**< Number of dropped ICMP packets. */\r
- uip_stats_t typeerr; /**< Number of ICMP packets with a wrong\r
- type. */\r
- uip_stats_t chkerr; /**< Number of ICMP packets with a bad\r
- checksum. */\r
- } icmp; /**< ICMP statistics. */\r
-#if UIP_TCP\r
- struct {\r
- uip_stats_t recv; /**< Number of recived TCP segments. */\r
- uip_stats_t sent; /**< Number of sent TCP segments. */\r
- uip_stats_t drop; /**< Number of dropped TCP segments. */\r
- uip_stats_t chkerr; /**< Number of TCP segments with a bad\r
- checksum. */\r
- uip_stats_t ackerr; /**< Number of TCP segments with a bad ACK\r
- number. */\r
- uip_stats_t rst; /**< Number of recevied TCP RST (reset) segments. */\r
- uip_stats_t rexmit; /**< Number of retransmitted TCP segments. */\r
- uip_stats_t syndrop; /**< Number of dropped SYNs due to too few\r
- connections was avaliable. */\r
- uip_stats_t synrst; /**< Number of SYNs for closed ports,\r
- triggering a RST. */\r
- } tcp; /**< TCP statistics. */\r
-#endif\r
-#if UIP_UDP\r
- struct {\r
- uip_stats_t drop; /**< Number of dropped UDP segments. */\r
- uip_stats_t recv; /**< Number of recived UDP segments. */\r
- uip_stats_t sent; /**< Number of sent UDP segments. */\r
- uip_stats_t chkerr; /**< Number of UDP segments with a bad\r
- checksum. */\r
- } udp; /**< UDP statistics. */\r
-#endif /* UIP_UDP */\r
-#if UIP_CONF_IPV6\r
- struct {\r
- uip_stats_t drop; /**< Number of dropped ND6 packets. */\r
- uip_stats_t recv; /**< Number of recived ND6 packets */\r
- uip_stats_t sent; /**< Number of sent ND6 packets */\r
- } nd6;\r
-#endif /*UIP_CONF_IPV6*/\r
-};\r
-\r
-\r
-/*---------------------------------------------------------------------------*/\r
-/* All the stuff below this point is internal to uIP and should not be\r
- * used directly by an application or by a device driver.\r
- */\r
-/*---------------------------------------------------------------------------*/\r
-\r
-\r
-\r
-/* u8_t uip_flags:\r
- *\r
- * When the application is called, uip_flags will contain the flags\r
- * that are defined in this file. Please read below for more\r
- * information.\r
- */\r
-extern u8_t uip_flags;\r
-\r
-/* The following flags may be set in the global variable uip_flags\r
- before calling the application callback. The UIP_ACKDATA,\r
- UIP_NEWDATA, and UIP_CLOSE flags may both be set at the same time,\r
- whereas the others are mutually exclusive. Note that these flags\r
- should *NOT* be accessed directly, but only through the uIP\r
- functions/macros. */\r
-\r
-#define UIP_ACKDATA 1 /* Signifies that the outstanding data was\r
- acked and the application should send\r
- out new data instead of retransmitting\r
- the last data. */\r
-#define UIP_NEWDATA 2 /* Flags the fact that the peer has sent\r
- us new data. */\r
-#define UIP_REXMIT 4 /* Tells the application to retransmit the\r
- data that was last sent. */\r
-#define UIP_POLL 8 /* Used for polling the application, to\r
- check if the application has data that\r
- it wants to send. */\r
-#define UIP_CLOSE 16 /* The remote host has closed the\r
- connection, thus the connection has\r
- gone away. Or the application signals\r
- that it wants to close the\r
- connection. */\r
-#define UIP_ABORT 32 /* The remote host has aborted the\r
- connection, thus the connection has\r
- gone away. Or the application signals\r
- that it wants to abort the\r
- connection. */\r
-#define UIP_CONNECTED 64 /* We have got a connection from a remote\r
- host and have set up a new connection\r
- for it, or an active connection has\r
- been successfully established. */\r
-\r
-#define UIP_TIMEDOUT 128 /* The connection has been aborted due to\r
- too many retransmissions. */\r
-\r
-\r
-/**\r
- * \brief process the options within a hop by hop or destination option header\r
- * \retval 0: nothing to send,\r
- * \retval 1: drop pkt\r
- * \retval 2: ICMP error message to send\r
-*/\r
-/*static u8_t\r
-uip_ext_hdr_options_process(); */\r
-\r
-/* uip_process(flag):\r
- *\r
- * The actual uIP function which does all the work.\r
- */\r
-void uip_process(u8_t flag);\r
- \r
- /* The following flags are passed as an argument to the uip_process()\r
- function. They are used to distinguish between the two cases where\r
- uip_process() is called. It can be called either because we have\r
- incoming data that should be processed, or because the periodic\r
- timer has fired. These values are never used directly, but only in\r
- the macros defined in this file. */\r
- \r
-#define UIP_DATA 1 /* Tells uIP that there is incoming\r
- data in the uip_buf buffer. The\r
- length of the data is stored in the\r
- global variable uip_len. */\r
-#define UIP_TIMER 2 /* Tells uIP that the periodic timer\r
- has fired. */\r
-#define UIP_POLL_REQUEST 3 /* Tells uIP that a connection should\r
- be polled. */\r
-#define UIP_UDP_SEND_CONN 4 /* Tells uIP that a UDP datagram\r
- should be constructed in the\r
- uip_buf buffer. */\r
-#if UIP_UDP\r
-#define UIP_UDP_TIMER 5\r
-#endif /* UIP_UDP */\r
-\r
-/* The TCP states used in the uip_conn->tcpstateflags. */\r
-#define UIP_CLOSED 0\r
-#define UIP_SYN_RCVD 1\r
-#define UIP_SYN_SENT 2\r
-#define UIP_ESTABLISHED 3\r
-#define UIP_FIN_WAIT_1 4\r
-#define UIP_FIN_WAIT_2 5\r
-#define UIP_CLOSING 6\r
-#define UIP_TIME_WAIT 7\r
-#define UIP_LAST_ACK 8\r
-#define UIP_TS_MASK 15\r
- \r
-#define UIP_STOPPED 16\r
-\r
-/* The TCP and IP headers. */\r
-struct uip_tcpip_hdr {\r
-#if UIP_CONF_IPV6\r
- /* IPv6 header. */\r
- u8_t vtc,\r
- tcflow;\r
- u16_t flow;\r
- u8_t len[2];\r
- u8_t proto, ttl;\r
- uip_ip6addr_t srcipaddr, destipaddr;\r
-#else /* UIP_CONF_IPV6 */\r
- /* IPv4 header. */\r
- u8_t vhl,\r
- tos,\r
- len[2],\r
- ipid[2],\r
- ipoffset[2],\r
- ttl,\r
- proto;\r
- u16_t ipchksum;\r
- uip_ipaddr_t srcipaddr, destipaddr;\r
-#endif /* UIP_CONF_IPV6 */\r
- \r
- /* TCP header. */\r
- u16_t srcport,\r
- destport;\r
- u8_t seqno[4],\r
- ackno[4],\r
- tcpoffset,\r
- flags,\r
- wnd[2];\r
- u16_t tcpchksum;\r
- u8_t urgp[2];\r
- u8_t optdata[4];\r
-};\r
-\r
-/* The ICMP and IP headers. */\r
-struct uip_icmpip_hdr {\r
-#if UIP_CONF_IPV6\r
- /* IPv6 header. */\r
- u8_t vtc,\r
- tcf;\r
- u16_t flow;\r
- u8_t len[2];\r
- u8_t proto, ttl;\r
- uip_ip6addr_t srcipaddr, destipaddr;\r
-#else /* UIP_CONF_IPV6 */\r
- /* IPv4 header. */\r
- u8_t vhl,\r
- tos,\r
- len[2],\r
- ipid[2],\r
- ipoffset[2],\r
- ttl,\r
- proto;\r
- u16_t ipchksum;\r
- uip_ipaddr_t srcipaddr, destipaddr;\r
-#endif /* UIP_CONF_IPV6 */\r
- \r
- /* ICMP header. */\r
- u8_t type, icode;\r
- u16_t icmpchksum;\r
-#if !UIP_CONF_IPV6\r
- u16_t id, seqno;\r
- u8_t payload[1];\r
-#endif /* !UIP_CONF_IPV6 */\r
-};\r
-\r
-\r
-/* The UDP and IP headers. */\r
-struct uip_udpip_hdr {\r
-#if UIP_CONF_IPV6\r
- /* IPv6 header. */\r
- u8_t vtc,\r
- tcf;\r
- u16_t flow;\r
- u8_t len[2];\r
- u8_t proto, ttl;\r
- uip_ip6addr_t srcipaddr, destipaddr;\r
-#else /* UIP_CONF_IPV6 */\r
- /* IP header. */\r
- u8_t vhl,\r
- tos,\r
- len[2],\r
- ipid[2],\r
- ipoffset[2],\r
- ttl,\r
- proto;\r
- u16_t ipchksum;\r
- uip_ipaddr_t srcipaddr, destipaddr;\r
-#endif /* UIP_CONF_IPV6 */\r
- \r
- /* UDP header. */\r
- u16_t srcport,\r
- destport;\r
- u16_t udplen;\r
- u16_t udpchksum;\r
-};\r
-\r
-/*\r
- * In IPv6 the length of the L3 headers before the transport header is\r
- * not fixed, due to the possibility to include extension option headers\r
- * after the IP header. hence we split here L3 and L4 headers\r
- */\r
-/* The IP header */\r
-struct uip_ip_hdr {\r
-#if UIP_CONF_IPV6\r
- /* IPV6 header */\r
- u8_t vtc;\r
- u8_t tcflow;\r
- u16_t flow;\r
- u8_t len[2];\r
- u8_t proto, ttl;\r
- uip_ip6addr_t srcipaddr, destipaddr;\r
-#else /* UIP_CONF_IPV6 */\r
- /* IPV4 header */\r
- u8_t vhl,\r
- tos,\r
- len[2],\r
- ipid[2],\r
- ipoffset[2],\r
- ttl,\r
- proto;\r
- u16_t ipchksum;\r
- uip_ipaddr_t srcipaddr, destipaddr;\r
-#endif /* UIP_CONF_IPV6 */\r
-};\r
-\r
-\r
-/*\r
- * IPv6 extension option headers: we are able to process\r
- * the 4 extension headers defined in RFC2460 (IPv6):\r
- * - Hop by hop option header, destination option header:\r
- * These two are not used by any core IPv6 protocol, hence\r
- * we just read them and go to the next. They convey options,\r
- * the options defined in RFC2460 are Pad1 and PadN, which do\r
- * some padding, and that we do not need to read (the length\r
- * field in the header is enough)\r
- * - Routing header: this one is most notably used by MIPv6,\r
- * which we do not implement, hence we just read it and go\r
- * to the next\r
- * - Fragmentation header: we read this header and are able to\r
- * reassemble packets\r
- *\r
- * We do not offer any means to send packets with extension headers\r
- *\r
- * We do not implement Authentication and ESP headers, which are\r
- * used in IPSec and defined in RFC4302,4303,4305,4385\r
- */\r
-/* common header part */\r
-struct uip_ext_hdr {\r
- u8_t next;\r
- u8_t len;\r
-};\r
-\r
-/* Hop by Hop option header */\r
-struct uip_hbho_hdr {\r
- u8_t next;\r
- u8_t len;\r
-};\r
-\r
-/* destination option header */\r
-struct uip_desto_hdr {\r
- u8_t next;\r
- u8_t len;\r
-};\r
-\r
-/* We do not define structures for PAD1 and PADN options */\r
-\r
-/*\r
- * routing header\r
- * the routing header as 4 common bytes, then routing header type\r
- * specific data there are several types of routing header. Type 0 was\r
- * deprecated as per RFC5095 most notable other type is 2, used in\r
- * RFC3775 (MIPv6) here we do not implement MIPv6, so we just need to\r
- * parse the 4 first bytes\r
- */\r
-struct uip_routing_hdr {\r
- u8_t next;\r
- u8_t len;\r
- u8_t routing_type;\r
- u8_t seg_left;\r
-};\r
-\r
-/* fragmentation header */\r
-struct uip_frag_hdr {\r
- u8_t next;\r
- u8_t res;\r
- u16_t offsetresmore;\r
- u32_t id;\r
-};\r
-\r
-/*\r
- * an option within the destination or hop by hop option headers\r
- * it contains type an length, which is true for all options but PAD1\r
- */\r
-struct uip_ext_hdr_opt {\r
- u8_t type;\r
- u8_t len;\r
-};\r
-\r
-/* PADN option */\r
-struct uip_ext_hdr_opt_padn {\r
- u8_t opt_type;\r
- u8_t opt_len;\r
-};\r
-\r
-/* TCP header */\r
-struct uip_tcp_hdr {\r
- u16_t srcport;\r
- u16_t destport;\r
- u8_t seqno[4];\r
- u8_t ackno[4];\r
- u8_t tcpoffset;\r
- u8_t flags;\r
- u8_t wnd[2];\r
- u16_t tcpchksum;\r
- u8_t urgp[2];\r
- u8_t optdata[4];\r
-};\r
-\r
-/* The ICMP headers. */\r
-struct uip_icmp_hdr {\r
- u8_t type, icode;\r
- u16_t icmpchksum;\r
-#if !UIP_CONF_IPV6\r
- u16_t id, seqno;\r
-#endif /* !UIP_CONF_IPV6 */\r
-};\r
-\r
-\r
-/* The UDP headers. */\r
-struct uip_udp_hdr {\r
- u16_t srcport;\r
- u16_t destport;\r
- u16_t udplen;\r
- u16_t udpchksum;\r
-};\r
-\r
-\r
-/**\r
- * The buffer size available for user data in the \ref uip_buf buffer.\r
- *\r
- * This macro holds the available size for user data in the \ref\r
- * uip_buf buffer. The macro is intended to be used for checking\r
- * bounds of available user data.\r
- *\r
- * Example:\r
- \code\r
- snprintf(uip_appdata, UIP_APPDATA_SIZE, "%u\n", i);\r
- \endcode\r
- *\r
- * \hideinitializer\r
- */\r
-#define UIP_APPDATA_SIZE (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN)\r
-#define UIP_APPDATA_PTR (void *)&uip_buf[UIP_LLH_LEN + UIP_TCPIP_HLEN]\r
-\r
-#define UIP_PROTO_ICMP 1\r
-#define UIP_PROTO_TCP 6\r
-#define UIP_PROTO_UDP 17\r
-#define UIP_PROTO_ICMP6 58\r
-\r
-\r
-#if UIP_CONF_IPV6\r
-/** @{ */\r
-/** \brief extension headers types */\r
-#define UIP_PROTO_HBHO 0\r
-#define UIP_PROTO_DESTO 60\r
-#define UIP_PROTO_ROUTING 43\r
-#define UIP_PROTO_FRAG 44\r
-#define UIP_PROTO_NONE 59\r
-/** @} */\r
-\r
-/** @{ */\r
-/** \brief Destination and Hop By Hop extension headers option types */\r
-#define UIP_EXT_HDR_OPT_PAD1 0\r
-#define UIP_EXT_HDR_OPT_PADN 1\r
-/** @} */\r
-\r
-/** @{ */\r
-/**\r
- * \brief Bitmaps for extension header processing\r
- *\r
- * When processing extension headers, we should record somehow which one we\r
- * see, because you cannot have twice the same header, except for destination\r
- * We store all this in one u8_t bitmap one bit for each header expected. The\r
- * order in the bitmap is the order recommended in RFC2460\r
- */\r
-#define UIP_EXT_HDR_BITMAP_HBHO 0x01\r
-#define UIP_EXT_HDR_BITMAP_DESTO1 0x02\r
-#define UIP_EXT_HDR_BITMAP_ROUTING 0x04\r
-#define UIP_EXT_HDR_BITMAP_FRAG 0x08\r
-#define UIP_EXT_HDR_BITMAP_AH 0x10\r
-#define UIP_EXT_HDR_BITMAP_ESP 0x20\r
-#define UIP_EXT_HDR_BITMAP_DESTO2 0x40\r
-/** @} */\r
-\r
-\r
-#endif /* UIP_CONF_IPV6 */\r
-\r
-\r
-/* Header sizes. */\r
-#if UIP_CONF_IPV6\r
-#define UIP_IPH_LEN 40\r
-#define UIP_FRAGH_LEN 8\r
-#else /* UIP_CONF_IPV6 */\r
-#define UIP_IPH_LEN 20 /* Size of IP header */\r
-#endif /* UIP_CONF_IPV6 */\r
-\r
-#define UIP_UDPH_LEN 8 /* Size of UDP header */\r
-#define UIP_TCPH_LEN 20 /* Size of TCP header */\r
-#ifdef UIP_IPH_LEN\r
-#define UIP_ICMPH_LEN 4 /* Size of ICMP header */\r
-#endif\r
-#define UIP_IPUDPH_LEN (UIP_UDPH_LEN + UIP_IPH_LEN) /* Size of IP +\r
- * UDP\r
- * header */\r
-#define UIP_IPTCPH_LEN (UIP_TCPH_LEN + UIP_IPH_LEN) /* Size of IP +\r
- * TCP\r
- * header */\r
-#define UIP_TCPIP_HLEN UIP_IPTCPH_LEN\r
-#define UIP_IPICMPH_LEN (UIP_IPH_LEN + UIP_ICMPH_LEN) /* size of ICMP\r
- + IP header */\r
-#define UIP_LLIPH_LEN (UIP_LLH_LEN + UIP_IPH_LEN) /* size of L2\r
- + IP header */\r
-#if UIP_CONF_IPV6\r
-/**\r
- * The sums below are quite used in ND. When used for uip_buf, we\r
- * include link layer length when used for uip_len, we do not, hence\r
- * we need values with and without LLH_LEN we do not use capital\r
- * letters as these values are variable\r
- */\r
-#define uip_l2_l3_hdr_len (UIP_LLH_LEN + UIP_IPH_LEN + uip_ext_len)\r
-#define uip_l2_l3_icmp_hdr_len (UIP_LLH_LEN + UIP_IPH_LEN + uip_ext_len + UIP_ICMPH_LEN)\r
-#define uip_l3_hdr_len (UIP_IPH_LEN + uip_ext_len)\r
-#define uip_l3_icmp_hdr_len (UIP_IPH_LEN + uip_ext_len + UIP_ICMPH_LEN)\r
-#endif /*UIP_CONF_IPV6*/\r
-\r
-\r
-#if UIP_FIXEDADDR\r
-extern const uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr;\r
-#else /* UIP_FIXEDADDR */\r
-extern uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr;\r
-#endif /* UIP_FIXEDADDR */\r
-extern const uip_ipaddr_t uip_broadcast_addr;\r
-extern const uip_ipaddr_t uip_all_zeroes_addr;\r
-\r
-#if UIP_FIXEDETHADDR\r
-extern const uip_lladdr_t uip_lladdr;\r
-#else\r
-extern uip_lladdr_t uip_lladdr;\r
-#endif\r
-\r
-\r
-\r
-\r
-#ifdef UIP_CONF_IPV6\r
-/**\r
- * \brief Is IPv6 address a the unspecified address\r
- * a is of type uip_ipaddr_t\r
- */\r
-#define uip_is_addr_unspecified(a) \\r
- ((((a)->u16[0]) == 0) && \\r
- (((a)->u16[1]) == 0) && \\r
- (((a)->u16[2]) == 0) && \\r
- (((a)->u16[3]) == 0) && \\r
- (((a)->u16[4]) == 0) && \\r
- (((a)->u16[5]) == 0) && \\r
- (((a)->u16[6]) == 0) && \\r
- (((a)->u16[7]) == 0))\r
-\r
-/** \brief Is IPv6 address a the link local all-nodes multicast address */\r
-#define uip_is_addr_linklocal_allnodes_mcast(a) \\r
- ((((a)->u8[0]) == 0xff) && \\r
- (((a)->u8[1]) == 0x02) && \\r
- (((a)->u16[1]) == 0) && \\r
- (((a)->u16[2]) == 0) && \\r
- (((a)->u16[3]) == 0) && \\r
- (((a)->u16[4]) == 0) && \\r
- (((a)->u16[5]) == 0) && \\r
- (((a)->u16[6]) == 0) && \\r
- (((a)->u8[14]) == 0) && \\r
- (((a)->u8[15]) == 0x01))\r
-\r
-/** \brief set IP address a to unspecified */\r
-#define uip_create_unspecified(a) uip_ip6addr(a, 0, 0, 0, 0, 0, 0, 0, 0)\r
-\r
-/** \brief set IP address a to the link local all-nodes multicast address */\r
-#define uip_create_linklocal_allnodes_mcast(a) uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0001)\r
-\r
-/** \brief set IP address a to the link local all-routers multicast address */\r
-#define uip_create_linklocal_allrouters_mcast(a) uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0002)\r
-\r
-/**\r
- * \brief is addr (a) a solicited node multicast address, see RFC3513\r
- * a is of type uip_ipaddr_t*\r
- */\r
-#define uip_is_addr_solicited_node(a) \\r
- ((((a)->u8[0]) == 0xFF) && \\r
- (((a)->u8[1]) == 0x02) && \\r
- (((a)->u16[1]) == 0) && \\r
- (((a)->u16[2]) == 0) && \\r
- (((a)->u16[3]) == 0) && \\r
- (((a)->u16[4]) == 0) && \\r
- (((a)->u16[5]) == 1) && \\r
- (((a)->u8[12]) == 0xFF))\r
-\r
-/**\r
- * \briefput in b the solicited node address corresponding to address a\r
- * both a and b are of type uip_ipaddr_t*\r
- * */\r
-#define uip_create_solicited_node(a, b) \\r
- (((b)->u8[0]) = 0xFF); \\r
- (((b)->u8[1]) = 0x02); \\r
- (((b)->u16[1]) = 0); \\r
- (((b)->u16[2]) = 0); \\r
- (((b)->u16[3]) = 0); \\r
- (((b)->u16[4]) = 0); \\r
- (((b)->u8[10]) = 0); \\r
- (((b)->u8[11]) = 0x01); \\r
- (((b)->u8[12]) = 0xFF); \\r
- (((b)->u8[13]) = ((a)->u8[13])); \\r
- (((b)->u16[7]) = ((a)->u16[7]))\r
-\r
-/**\r
- * \brief is addr (a) a link local unicast address, see RFC3513\r
- * i.e. is (a) on prefix FE80::/10\r
- * a is of type uip_ipaddr_t*\r
- */\r
-#define uip_is_addr_link_local(a) \\r
- ((((a)->u8[0]) == 0xFE) && \\r
- (((a)->u8[1]) == 0x80))\r
-\r
-/**\r
- * \brief was addr (a) forged based on the mac address m\r
- * a type is uip_ipaddr_t\r
- * m type is uiplladdr_t\r
- */\r
-#if UIP_CONF_LL_802154\r
-#define uip_is_addr_mac_addr_based(a, m) \\r
- ((((a)->u8[8]) == (((m)->addr[0]) ^ 0x02)) && \\r
- (((a)->u8[9]) == (m)->addr[1]) && \\r
- (((a)->u8[10]) == (m)->addr[2]) && \\r
- (((a)->u8[11]) == (m)->addr[3]) && \\r
- (((a)->u8[12]) == (m)->addr[4]) && \\r
- (((a)->u8[13]) == (m)->addr[5]) && \\r
- (((a)->u8[14]) == (m)->addr[6]) && \\r
- (((a)->u8[15]) == (m)->addr[7]))\r
-#else\r
-\r
-#define uip_is_addr_mac_addr_based(a, m) \\r
- ((((a)->u8[8]) == (((m)->addr[0]) | 0x02)) && \\r
- (((a)->u8[9]) == (m)->addr[1]) && \\r
- (((a)->u8[10]) == (m)->addr[2]) && \\r
- (((a)->u8[11]) == 0xff) && \\r
- (((a)->u8[12]) == 0xfe) && \\r
- (((a)->u8[13]) == (m)->addr[3]) && \\r
- (((a)->u8[14]) == (m)->addr[4]) && \\r
- (((a)->u8[15]) == (m)->addr[5]))\r
- \r
-#endif /*UIP_CONF_LL_802154*/\r
-\r
-/**\r
- * \brief is address a multicast address, see RFC 3513\r
- * a is of type uip_ipaddr_t*\r
- * */\r
-#define uip_is_addr_mcast(a) \\r
- (((a)->u8[0]) == 0xFF)\r
-\r
-/**\r
- * \brief is group-id of multicast address a\r
- * the all nodes group-id\r
- */\r
-#define uip_is_mcast_group_id_all_nodes(a) \\r
- ((((a)->u16[1]) == 0) && \\r
- (((a)->u16[2]) == 0) && \\r
- (((a)->u16[3]) == 0) && \\r
- (((a)->u16[4]) == 0) && \\r
- (((a)->u16[5]) == 0) && \\r
- (((a)->u16[6]) == 0) && \\r
- (((a)->u8[14]) == 0) && \\r
- (((a)->u8[15]) == 1))\r
-\r
-/**\r
- * \brief is group-id of multicast address a\r
- * the all routers group-id\r
- */\r
-#define uip_is_mcast_group_id_all_routers(a) \\r
- ((((a)->u16[1]) == 0) && \\r
- (((a)->u16[2]) == 0) && \\r
- (((a)->u16[3]) == 0) && \\r
- (((a)->u16[4]) == 0) && \\r
- (((a)->u16[5]) == 0) && \\r
- (((a)->u16[6]) == 0) && \\r
- (((a)->u8[14]) == 0) && \\r
- (((a)->u8[15]) == 2))\r
-\r
-\r
-#endif /*UIP_CONF_IPV6*/\r
-\r
-/**\r
- * Calculate the Internet checksum over a buffer.\r
- *\r
- * The Internet checksum is the one's complement of the one's\r
- * complement sum of all 16-bit words in the buffer.\r
- *\r
- * See RFC1071.\r
- *\r
- * \param buf A pointer to the buffer over which the checksum is to be\r
- * computed.\r
- *\r
- * \param len The length of the buffer over which the checksum is to\r
- * be computed.\r
- *\r
- * \return The Internet checksum of the buffer.\r
- */\r
-u16_t uip_chksum(u16_t *buf, u16_t len);\r
-\r
-/**\r
- * Calculate the IP header checksum of the packet header in uip_buf.\r
- *\r
- * The IP header checksum is the Internet checksum of the 20 bytes of\r
- * the IP header.\r
- *\r
- * \return The IP header checksum of the IP header in the uip_buf\r
- * buffer.\r
- */\r
-u16_t uip_ipchksum(void);\r
-\r
-/**\r
- * Calculate the TCP checksum of the packet in uip_buf and uip_appdata.\r
- *\r
- * The TCP checksum is the Internet checksum of data contents of the\r
- * TCP segment, and a pseudo-header as defined in RFC793.\r
- *\r
- * \return The TCP checksum of the TCP segment in uip_buf and pointed\r
- * to by uip_appdata.\r
- */\r
-u16_t uip_tcpchksum(void);\r
-\r
-/**\r
- * Calculate the UDP checksum of the packet in uip_buf and uip_appdata.\r
- *\r
- * The UDP checksum is the Internet checksum of data contents of the\r
- * UDP segment, and a pseudo-header as defined in RFC768.\r
- *\r
- * \return The UDP checksum of the UDP segment in uip_buf and pointed\r
- * to by uip_appdata.\r
- */\r
-u16_t uip_udpchksum(void);\r
-\r
-/**\r
- * Calculate the ICMP checksum of the packet in uip_buf.\r
- *\r
- * \return The ICMP checksum of the ICMP packet in uip_buf\r
- */\r
-u16_t uip_icmp6chksum(void);\r
-\r
-\r
-#endif /* __UIP_H__ */\r
-\r
-\r
-/** @} */\r
+
+/**
+ * \addtogroup uip
+ * @{
+ */
+
+/**
+ * \file
+ * Header file for the uIP TCP/IP stack.
+ * \author Adam Dunkels <adam@dunkels.com>
+ * \author Julien Abeille <jabeille@cisco.com> (IPv6 related code)
+ * \author Mathilde Durvy <mdurvy@cisco.com> (IPv6 related code)
+ *
+ * The uIP TCP/IP stack header file contains definitions for a number
+ * of C macros that are used by uIP programs as well as internal uIP
+ * structures, TCP/IP header structures and function declarations.
+ *
+ */
+
+/*
+ * Copyright (c) 2001-2003, Adam Dunkels.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack.
+ *
+ * $Id: uip.h,v 1.24 2009/04/06 13:18:50 nvt-se Exp $
+ *
+ */
+
+#ifndef __UIP_H__
+#define __UIP_H__
+
+#include "uipopt.h"
+
+/**
+ * Representation of an IP address.
+ *
+ */
+#if UIP_CONF_IPV6
+typedef union uip_ip6addr_t {
+ u8_t u8[16]; /* Initializer, must come first!!! */
+ u16_t u16[8];
+} uip_ip6addr_t;
+
+typedef uip_ip6addr_t uip_ipaddr_t;
+#else /* UIP_CONF_IPV6 */
+typedef union uip_ip4addr_t {
+ u8_t u8[4]; /* Initializer, must come first!!! */
+ u16_t u16[2];
+#if 0
+ u32_t u32;
+#endif
+} uip_ip4addr_t;
+typedef uip_ip4addr_t uip_ipaddr_t;
+#endif /* UIP_CONF_IPV6 */
+
+
+/*---------------------------------------------------------------------------*/
+
+/** \brief 16 bit 802.15.4 address */
+struct uip_802154_shortaddr {
+ u8_t addr[2];
+};
+/** \brief 64 bit 802.15.4 address */
+struct uip_802154_longaddr {
+ u8_t addr[8];
+};
+
+/** \brief 802.11 address */
+struct uip_80211_addr {
+ u8_t addr[6];
+};
+
+/** \brief 802.3 address */
+struct uip_eth_addr {
+ u8_t addr[6];
+};
+
+#if UIP_CONF_LL_802154
+/** \brief 802.15.4 address */
+typedef struct uip_802154_longaddr uip_lladdr_t;
+#define UIP_802154_SHORTADDR_LEN 2
+#define UIP_802154_LONGADDR_LEN 8
+#define UIP_LLADDR_LEN UIP_802154_LONGADDR_LEN
+#else /*UIP_CONF_LL_802154*/
+#if UIP_CONF_LL_80211
+/** \brief 802.11 address */
+typedef struct uip_80211_addr uip_lladdr_t;
+#define UIP_LLADDR_LEN 6
+#else /*UIP_CONF_LL_80211*/
+/** \brief Ethernet address */
+typedef struct uip_eth_addr uip_lladdr_t;
+#define UIP_LLADDR_LEN 6
+#endif /*UIP_CONF_LL_80211*/
+#endif /*UIP_CONF_LL_802154*/
+
+/*---------------------------------------------------------------------------*/
+/* First, the functions that should be called from the
+ * system. Initialization, the periodic timer, and incoming packets are
+ * handled by the following three functions.
+ */
+/**
+ * \defgroup uipconffunc uIP configuration functions
+ * @{
+ *
+ * The uIP configuration functions are used for setting run-time
+ * parameters in uIP such as IP addresses.
+ */
+
+/**
+ * Set the IP address of this host.
+ *
+ * The IP address is represented as a 4-byte array where the first
+ * octet of the IP address is put in the first member of the 4-byte
+ * array.
+ *
+ * Example:
+ \code
+
+ uip_ipaddr_t addr;
+
+ uip_ipaddr(&addr, 192,168,1,2);
+ uip_sethostaddr(&addr);
+
+ \endcode
+ * \param addr A pointer to an IP address of type uip_ipaddr_t;
+ *
+ * \sa uip_ipaddr()
+ *
+ * \hideinitializer
+ */
+#define uip_sethostaddr(addr) uip_ipaddr_copy(&uip_hostaddr, (addr))
+
+/**
+ * Get the IP address of this host.
+ *
+ * The IP address is represented as a 4-byte array where the first
+ * octet of the IP address is put in the first member of the 4-byte
+ * array.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t hostaddr;
+
+ uip_gethostaddr(&hostaddr);
+ \endcode
+ * \param addr A pointer to a uip_ipaddr_t variable that will be
+ * filled in with the currently configured IP address.
+ *
+ * \hideinitializer
+ */
+#define uip_gethostaddr(addr) uip_ipaddr_copy((addr), &uip_hostaddr)
+
+/**
+ * Set the default router's IP address.
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable containing the IP
+ * address of the default router.
+ *
+ * \sa uip_ipaddr()
+ *
+ * \hideinitializer
+ */
+#define uip_setdraddr(addr) uip_ipaddr_copy(&uip_draddr, (addr))
+
+/**
+ * Set the netmask.
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable containing the IP
+ * address of the netmask.
+ *
+ * \sa uip_ipaddr()
+ *
+ * \hideinitializer
+ */
+#define uip_setnetmask(addr) uip_ipaddr_copy(&uip_netmask, (addr))
+
+
+/**
+ * Get the default router's IP address.
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable that will be
+ * filled in with the IP address of the default router.
+ *
+ * \hideinitializer
+ */
+#define uip_getdraddr(addr) uip_ipaddr_copy((addr), &uip_draddr)
+
+/**
+ * Get the netmask.
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable that will be
+ * filled in with the value of the netmask.
+ *
+ * \hideinitializer
+ */
+#define uip_getnetmask(addr) uip_ipaddr_copy((addr), &uip_netmask)
+
+/** @} */
+
+/**
+ * \defgroup uipinit uIP initialization functions
+ * @{
+ *
+ * The uIP initialization functions are used for booting uIP.
+ */
+
+/**
+ * uIP initialization function.
+ *
+ * This function should be called at boot up to initilize the uIP
+ * TCP/IP stack.
+ */
+void uip_init(void);
+
+/**
+ * uIP initialization function.
+ *
+ * This function may be used at boot time to set the initial ip_id.
+ */
+void uip_setipid(u16_t id);
+
+/** @} */
+
+/**
+ * \defgroup uipdevfunc uIP device driver functions
+ * @{
+ *
+ * These functions are used by a network device driver for interacting
+ * with uIP.
+ */
+
+/**
+ * Process an incoming packet.
+ *
+ * This function should be called when the device driver has received
+ * a packet from the network. The packet from the device driver must
+ * be present in the uip_buf buffer, and the length of the packet
+ * should be placed in the uip_len variable.
+ *
+ * When the function returns, there may be an outbound packet placed
+ * in the uip_buf packet buffer. If so, the uip_len variable is set to
+ * the length of the packet. If no packet is to be sent out, the
+ * uip_len variable is set to 0.
+ *
+ * The usual way of calling the function is presented by the source
+ * code below.
+ \code
+ uip_len = devicedriver_poll();
+ if(uip_len > 0) {
+ uip_input();
+ if(uip_len > 0) {
+ devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \note If you are writing a uIP device driver that needs ARP
+ * (Address Resolution Protocol), e.g., when running uIP over
+ * Ethernet, you will need to call the uIP ARP code before calling
+ * this function:
+ \code
+ #define BUF ((struct uip_eth_hdr *)&uip_buf[0])
+ uip_len = ethernet_devicedrver_poll();
+ if(uip_len > 0) {
+ if(BUF->type == HTONS(UIP_ETHTYPE_IP)) {
+ uip_arp_ipin();
+ uip_input();
+ if(uip_len > 0) {
+ uip_arp_out();
+ ethernet_devicedriver_send();
+ }
+ } else if(BUF->type == HTONS(UIP_ETHTYPE_ARP)) {
+ uip_arp_arpin();
+ if(uip_len > 0) {
+ ethernet_devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \hideinitializer
+ */
+#define uip_input() uip_process(UIP_DATA)
+
+
+/**
+ * Periodic processing for a connection identified by its number.
+ *
+ * This function does the necessary periodic processing (timers,
+ * polling) for a uIP TCP conneciton, and should be called when the
+ * periodic uIP timer goes off. It should be called for every
+ * connection, regardless of whether they are open of closed.
+ *
+ * When the function returns, it may have an outbound packet waiting
+ * for service in the uIP packet buffer, and if so the uip_len
+ * variable is set to a value larger than zero. The device driver
+ * should be called to send out the packet.
+ *
+ * The usual way of calling the function is through a for() loop like
+ * this:
+ \code
+ for(i = 0; i < UIP_CONNS; ++i) {
+ uip_periodic(i);
+ if(uip_len > 0) {
+ devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \note If you are writing a uIP device driver that needs ARP
+ * (Address Resolution Protocol), e.g., when running uIP over
+ * Ethernet, you will need to call the uip_arp_out() function before
+ * calling the device driver:
+ \code
+ for(i = 0; i < UIP_CONNS; ++i) {
+ uip_periodic(i);
+ if(uip_len > 0) {
+ uip_arp_out();
+ ethernet_devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \param conn The number of the connection which is to be periodically polled.
+ *
+ * \hideinitializer
+ */
+#if UIP_TCP
+#define uip_periodic(conn) do { uip_conn = &uip_conns[conn]; \
+ uip_process(UIP_TIMER); } while (0)
+
+/**
+ *
+ *
+ */
+#define uip_conn_active(conn) (uip_conns[conn].tcpstateflags != UIP_CLOSED)
+
+/**
+ * Perform periodic processing for a connection identified by a pointer
+ * to its structure.
+ *
+ * Same as uip_periodic() but takes a pointer to the actual uip_conn
+ * struct instead of an integer as its argument. This function can be
+ * used to force periodic processing of a specific connection.
+ *
+ * \param conn A pointer to the uip_conn struct for the connection to
+ * be processed.
+ *
+ * \hideinitializer
+ */
+#define uip_periodic_conn(conn) do { uip_conn = conn; \
+ uip_process(UIP_TIMER); } while (0)
+
+/**
+ * Request that a particular connection should be polled.
+ *
+ * Similar to uip_periodic_conn() but does not perform any timer
+ * processing. The application is polled for new data.
+ *
+ * \param conn A pointer to the uip_conn struct for the connection to
+ * be processed.
+ *
+ * \hideinitializer
+ */
+#define uip_poll_conn(conn) do { uip_conn = conn; \
+ uip_process(UIP_POLL_REQUEST); } while (0)
+
+#endif /* UIP_TCP */
+
+#if UIP_UDP
+/**
+ * Periodic processing for a UDP connection identified by its number.
+ *
+ * This function is essentially the same as uip_periodic(), but for
+ * UDP connections. It is called in a similar fashion as the
+ * uip_periodic() function:
+ \code
+ for(i = 0; i < UIP_UDP_CONNS; i++) {
+ uip_udp_periodic(i);
+ if(uip_len > 0) {
+ devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \note As for the uip_periodic() function, special care has to be
+ * taken when using uIP together with ARP and Ethernet:
+ \code
+ for(i = 0; i < UIP_UDP_CONNS; i++) {
+ uip_udp_periodic(i);
+ if(uip_len > 0) {
+ uip_arp_out();
+ ethernet_devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \param conn The number of the UDP connection to be processed.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_periodic(conn) do { uip_udp_conn = &uip_udp_conns[conn]; \
+ uip_process(UIP_UDP_TIMER); } while(0)
+
+/**
+ * Periodic processing for a UDP connection identified by a pointer to
+ * its structure.
+ *
+ * Same as uip_udp_periodic() but takes a pointer to the actual
+ * uip_conn struct instead of an integer as its argument. This
+ * function can be used to force periodic processing of a specific
+ * connection.
+ *
+ * \param conn A pointer to the uip_udp_conn struct for the connection
+ * to be processed.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_periodic_conn(conn) do { uip_udp_conn = conn; \
+ uip_process(UIP_UDP_TIMER); } while(0)
+#endif /* UIP_UDP */
+
+/** \brief Abandon the reassembly of the current packet */
+void uip_reass_over(void);
+
+/**
+ * The uIP packet buffer.
+ *
+ * The uip_buf array is used to hold incoming and outgoing
+ * packets. The device driver should place incoming data into this
+ * buffer. When sending data, the device driver should read the link
+ * level headers and the TCP/IP headers from this buffer. The size of
+ * the link level headers is configured by the UIP_LLH_LEN define.
+ *
+ * \note The application data need not be placed in this buffer, so
+ * the device driver must read it from the place pointed to by the
+ * uip_appdata pointer as illustrated by the following example:
+ \code
+ void
+ devicedriver_send(void)
+ {
+ hwsend(&uip_buf[0], UIP_LLH_LEN);
+ if(uip_len <= UIP_LLH_LEN + UIP_TCPIP_HLEN) {
+ hwsend(&uip_buf[UIP_LLH_LEN], uip_len - UIP_LLH_LEN);
+ } else {
+ hwsend(&uip_buf[UIP_LLH_LEN], UIP_TCPIP_HLEN);
+ hwsend(uip_appdata, uip_len - UIP_TCPIP_HLEN - UIP_LLH_LEN);
+ }
+ }
+ \endcode
+*/
+extern u8_t uip_buf[UIP_BUFSIZE+2];
+
+
+
+/** @} */
+
+/*---------------------------------------------------------------------------*/
+/* Functions that are used by the uIP application program. Opening and
+ * closing connections, sending and receiving data, etc. is all
+ * handled by the functions below.
+ */
+/**
+ * \defgroup uipappfunc uIP application functions
+ * @{
+ *
+ * Functions used by an application running of top of uIP.
+ */
+
+/**
+ * Start listening to the specified port.
+ *
+ * \note Since this function expects the port number in network byte
+ * order, a conversion using HTONS() or htons() is necessary.
+ *
+ \code
+ uip_listen(HTONS(80));
+ \endcode
+ *
+ * \param port A 16-bit port number in network byte order.
+ */
+void uip_listen(u16_t port);
+
+/**
+ * Stop listening to the specified port.
+ *
+ * \note Since this function expects the port number in network byte
+ * order, a conversion using HTONS() or htons() is necessary.
+ *
+ \code
+ uip_unlisten(HTONS(80));
+ \endcode
+ *
+ * \param port A 16-bit port number in network byte order.
+ */
+void uip_unlisten(u16_t port);
+
+/**
+ * Connect to a remote host using TCP.
+ *
+ * This function is used to start a new connection to the specified
+ * port on the specified host. It allocates a new connection identifier,
+ * sets the connection to the SYN_SENT state and sets the
+ * retransmission timer to 0. This will cause a TCP SYN segment to be
+ * sent out the next time this connection is periodically processed,
+ * which usually is done within 0.5 seconds after the call to
+ * uip_connect().
+ *
+ * \note This function is available only if support for active open
+ * has been configured by defining UIP_ACTIVE_OPEN to 1 in uipopt.h.
+ *
+ * \note Since this function requires the port number to be in network
+ * byte order, a conversion using HTONS() or htons() is necessary.
+ *
+ \code
+ uip_ipaddr_t ipaddr;
+
+ uip_ipaddr(&ipaddr, 192,168,1,2);
+ uip_connect(&ipaddr, HTONS(80));
+ \endcode
+ *
+ * \param ripaddr The IP address of the remote host.
+ *
+ * \param port A 16-bit port number in network byte order.
+ *
+ * \return A pointer to the uIP connection identifier for the new connection,
+ * or NULL if no connection could be allocated.
+ *
+ */
+struct uip_conn *uip_connect(uip_ipaddr_t *ripaddr, u16_t port);
+
+
+
+/**
+ * \internal
+ *
+ * Check if a connection has outstanding (i.e., unacknowledged) data.
+ *
+ * \param conn A pointer to the uip_conn structure for the connection.
+ *
+ * \hideinitializer
+ */
+#define uip_outstanding(conn) ((conn)->len)
+
+/**
+ * Send data on the current connection.
+ *
+ * This function is used to send out a single segment of TCP
+ * data. Only applications that have been invoked by uIP for event
+ * processing can send data.
+ *
+ * The amount of data that actually is sent out after a call to this
+ * function is determined by the maximum amount of data TCP allows. uIP
+ * will automatically crop the data so that only the appropriate
+ * amount of data is sent. The function uip_mss() can be used to query
+ * uIP for the amount of data that actually will be sent.
+ *
+ * \note This function does not guarantee that the sent data will
+ * arrive at the destination. If the data is lost in the network, the
+ * application will be invoked with the uip_rexmit() event being
+ * set. The application will then have to resend the data using this
+ * function.
+ *
+ * \param data A pointer to the data which is to be sent.
+ *
+ * \param len The maximum amount of data bytes to be sent.
+ *
+ * \hideinitializer
+ */
+void uip_send(const void *data, int len);
+
+/**
+ * The length of any incoming data that is currently available (if available)
+ * in the uip_appdata buffer.
+ *
+ * The test function uip_data() must first be used to check if there
+ * is any data available at all.
+ *
+ * \hideinitializer
+ */
+/*void uip_datalen(void);*/
+#define uip_datalen() uip_len
+
+/**
+ * The length of any out-of-band data (urgent data) that has arrived
+ * on the connection.
+ *
+ * \note The configuration parameter UIP_URGDATA must be set for this
+ * function to be enabled.
+ *
+ * \hideinitializer
+ */
+#define uip_urgdatalen() uip_urglen
+
+/**
+ * Close the current connection.
+ *
+ * This function will close the current connection in a nice way.
+ *
+ * \hideinitializer
+ */
+#define uip_close() (uip_flags = UIP_CLOSE)
+
+/**
+ * Abort the current connection.
+ *
+ * This function will abort (reset) the current connection, and is
+ * usually used when an error has occurred that prevents using the
+ * uip_close() function.
+ *
+ * \hideinitializer
+ */
+#define uip_abort() (uip_flags = UIP_ABORT)
+
+/**
+ * Tell the sending host to stop sending data.
+ *
+ * This function will close our receiver's window so that we stop
+ * receiving data for the current connection.
+ *
+ * \hideinitializer
+ */
+#define uip_stop() (uip_conn->tcpstateflags |= UIP_STOPPED)
+
+/**
+ * Find out if the current connection has been previously stopped with
+ * uip_stop().
+ *
+ * \hideinitializer
+ */
+#define uip_stopped(conn) ((conn)->tcpstateflags & UIP_STOPPED)
+
+/**
+ * Restart the current connection, if is has previously been stopped
+ * with uip_stop().
+ *
+ * This function will open the receiver's window again so that we
+ * start receiving data for the current connection.
+ *
+ * \hideinitializer
+ */
+#define uip_restart() do { uip_flags |= UIP_NEWDATA; \
+ uip_conn->tcpstateflags &= ~UIP_STOPPED; \
+ } while(0)
+
+
+/* uIP tests that can be made to determine in what state the current
+ connection is, and what the application function should do. */
+
+/**
+ * Is the current connection a UDP connection?
+ *
+ * This function checks whether the current connection is a UDP connection.
+ *
+ * \hideinitializer
+ *
+ */
+#define uip_udpconnection() (uip_conn == NULL)
+
+/**
+ * Is new incoming data available?
+ *
+ * Will reduce to non-zero if there is new data for the application
+ * present at the uip_appdata pointer. The size of the data is
+ * available through the uip_len variable.
+ *
+ * \hideinitializer
+ */
+#define uip_newdata() (uip_flags & UIP_NEWDATA)
+
+/**
+ * Has previously sent data been acknowledged?
+ *
+ * Will reduce to non-zero if the previously sent data has been
+ * acknowledged by the remote host. This means that the application
+ * can send new data.
+ *
+ * \hideinitializer
+ */
+#define uip_acked() (uip_flags & UIP_ACKDATA)
+
+/**
+ * Has the connection just been connected?
+ *
+ * Reduces to non-zero if the current connection has been connected to
+ * a remote host. This will happen both if the connection has been
+ * actively opened (with uip_connect()) or passively opened (with
+ * uip_listen()).
+ *
+ * \hideinitializer
+ */
+#define uip_connected() (uip_flags & UIP_CONNECTED)
+
+/**
+ * Has the connection been closed by the other end?
+ *
+ * Is non-zero if the connection has been closed by the remote
+ * host. The application may then do the necessary clean-ups.
+ *
+ * \hideinitializer
+ */
+#define uip_closed() (uip_flags & UIP_CLOSE)
+
+/**
+ * Has the connection been aborted by the other end?
+ *
+ * Non-zero if the current connection has been aborted (reset) by the
+ * remote host.
+ *
+ * \hideinitializer
+ */
+#define uip_aborted() (uip_flags & UIP_ABORT)
+
+/**
+ * Has the connection timed out?
+ *
+ * Non-zero if the current connection has been aborted due to too many
+ * retransmissions.
+ *
+ * \hideinitializer
+ */
+#define uip_timedout() (uip_flags & UIP_TIMEDOUT)
+
+/**
+ * Do we need to retransmit previously data?
+ *
+ * Reduces to non-zero if the previously sent data has been lost in
+ * the network, and the application should retransmit it. The
+ * application should send the exact same data as it did the last
+ * time, using the uip_send() function.
+ *
+ * \hideinitializer
+ */
+#define uip_rexmit() (uip_flags & UIP_REXMIT)
+
+/**
+ * Is the connection being polled by uIP?
+ *
+ * Is non-zero if the reason the application is invoked is that the
+ * current connection has been idle for a while and should be
+ * polled.
+ *
+ * The polling event can be used for sending data without having to
+ * wait for the remote host to send data.
+ *
+ * \hideinitializer
+ */
+#define uip_poll() (uip_flags & UIP_POLL)
+
+/**
+ * Get the initial maximum segment size (MSS) of the current
+ * connection.
+ *
+ * \hideinitializer
+ */
+#define uip_initialmss() (uip_conn->initialmss)
+
+/**
+ * Get the current maximum segment size that can be sent on the current
+ * connection.
+ *
+ * The current maximum segment size that can be sent on the
+ * connection is computed from the receiver's window and the MSS of
+ * the connection (which also is available by calling
+ * uip_initialmss()).
+ *
+ * \hideinitializer
+ */
+#define uip_mss() (uip_conn->mss)
+
+/**
+ * Set up a new UDP connection.
+ *
+ * This function sets up a new UDP connection. The function will
+ * automatically allocate an unused local port for the new
+ * connection. However, another port can be chosen by using the
+ * uip_udp_bind() call, after the uip_udp_new() function has been
+ * called.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t addr;
+ struct uip_udp_conn *c;
+
+ uip_ipaddr(&addr, 192,168,2,1);
+ c = uip_udp_new(&addr, HTONS(12345));
+ if(c != NULL) {
+ uip_udp_bind(c, HTONS(12344));
+ }
+ \endcode
+ * \param ripaddr The IP address of the remote host.
+ *
+ * \param rport The remote port number in network byte order.
+ *
+ * \return The uip_udp_conn structure for the new connection or NULL
+ * if no connection could be allocated.
+ */
+struct uip_udp_conn *uip_udp_new(const uip_ipaddr_t *ripaddr, u16_t rport);
+
+/**
+ * Removed a UDP connection.
+ *
+ * \param conn A pointer to the uip_udp_conn structure for the connection.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_remove(conn) (conn)->lport = 0
+
+/**
+ * Bind a UDP connection to a local port.
+ *
+ * \param conn A pointer to the uip_udp_conn structure for the
+ * connection.
+ *
+ * \param port The local port number, in network byte order.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_bind(conn, port) (conn)->lport = port
+
+/**
+ * Send a UDP datagram of length len on the current connection.
+ *
+ * This function can only be called in response to a UDP event (poll
+ * or newdata). The data must be present in the uip_buf buffer, at the
+ * place pointed to by the uip_appdata pointer.
+ *
+ * \param len The length of the data in the uip_buf buffer.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_send(len) uip_send((char *)uip_appdata, len)
+
+/** @} */
+
+/* uIP convenience and converting functions. */
+
+/**
+ * \defgroup uipconvfunc uIP conversion functions
+ * @{
+ *
+ * These functions can be used for converting between different data
+ * formats used by uIP.
+ */
+
+/**
+ * Convert an IP address to four bytes separated by commas.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ printf("ipaddr=%d.%d.%d.%d\n", uip_ipaddr_to_quad(&ipaddr));
+ \endcode
+ *
+ * \param a A pointer to a uip_ipaddr_t.
+ * \hideinitializer
+ */
+#define uip_ipaddr_to_quad(a) (a)->u8[0],(a)->u8[1],(a)->u8[2],(a)->u8[3]
+
+/**
+ * Construct an IP address from four bytes.
+ *
+ * This function constructs an IP address of the type that uIP handles
+ * internally from four bytes. The function is handy for specifying IP
+ * addresses to use with e.g. the uip_connect() function.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ struct uip_conn *c;
+
+ uip_ipaddr(&ipaddr, 192,168,1,2);
+ c = uip_connect(&ipaddr, HTONS(80));
+ \endcode
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable that will be
+ * filled in with the IP address.
+ *
+ * \param addr0 The first octet of the IP address.
+ * \param addr1 The second octet of the IP address.
+ * \param addr2 The third octet of the IP address.
+ * \param addr3 The forth octet of the IP address.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr(addr, addr0,addr1,addr2,addr3) do { \
+ (addr)->u8[0] = addr0; \
+ (addr)->u8[1] = addr1; \
+ (addr)->u8[2] = addr2; \
+ (addr)->u8[3] = addr3; \
+ } while(0)
+
+/**
+ * Construct an IPv6 address from eight 16-bit words.
+ *
+ * This function constructs an IPv6 address.
+ *
+ * \hideinitializer
+ */
+#define uip_ip6addr(addr, addr0,addr1,addr2,addr3,addr4,addr5,addr6,addr7) do { \
+ (addr)->u16[0] = HTONS(addr0); \
+ (addr)->u16[1] = HTONS(addr1); \
+ (addr)->u16[2] = HTONS(addr2); \
+ (addr)->u16[3] = HTONS(addr3); \
+ (addr)->u16[4] = HTONS(addr4); \
+ (addr)->u16[5] = HTONS(addr5); \
+ (addr)->u16[6] = HTONS(addr6); \
+ (addr)->u16[7] = HTONS(addr7); \
+ } while(0)
+
+/**
+ * Construct an IPv6 address from eight 8-bit words.
+ *
+ * This function constructs an IPv6 address.
+ *
+ * \hideinitializer
+ */
+#define uip_ip6addr_u8(addr, addr0,addr1,addr2,addr3,addr4,addr5,addr6,addr7,addr8,addr9,addr10,addr11,addr12,addr13,addr14,addr15) do { \
+ (addr)->u8[0] = addr0; \
+ (addr)->u8[1] = addr1; \
+ (addr)->u8[2] = addr2; \
+ (addr)->u8[3] = addr3; \
+ (addr)->u8[4] = addr4; \
+ (addr)->u8[5] = addr5; \
+ (addr)->u8[6] = addr6; \
+ (addr)->u8[7] = addr7; \
+ (addr)->u8[8] = addr8; \
+ (addr)->u8[9] = addr9; \
+ (addr)->u8[10] = addr10; \
+ (addr)->u8[11] = addr11; \
+ (addr)->u8[12] = addr12; \
+ (addr)->u8[13] = addr13; \
+ (addr)->u8[14] = addr14; \
+ (addr)->u8[15] = addr15; \
+ } while(0)
+
+
+/**
+ * Copy an IP address to another IP address.
+ *
+ * Copies an IP address from one place to another.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr1, ipaddr2;
+
+ uip_ipaddr(&ipaddr1, 192,16,1,2);
+ uip_ipaddr_copy(&ipaddr2, &ipaddr1);
+ \endcode
+ *
+ * \param dest The destination for the copy.
+ * \param src The source from where to copy.
+ *
+ * \hideinitializer
+ */
+#ifndef uip_ipaddr_copy
+#define uip_ipaddr_copy(dest, src) (*(dest) = *(src))
+#endif
+
+/**
+ * Compare two IP addresses
+ *
+ * Compares two IP addresses.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr1, ipaddr2;
+
+ uip_ipaddr(&ipaddr1, 192,16,1,2);
+ if(uip_ipaddr_cmp(&ipaddr2, &ipaddr1)) {
+ printf("They are the same");
+ }
+ \endcode
+ *
+ * \param addr1 The first IP address.
+ * \param addr2 The second IP address.
+ *
+ * \hideinitializer
+ */
+#if !UIP_CONF_IPV6
+#define uip_ipaddr_cmp(addr1, addr2) ((addr1)->u16[0] == (addr2)->u16[0] && \
+ (addr1)->u16[1] == (addr2)->u16[1])
+#else /* !UIP_CONF_IPV6 */
+#define uip_ipaddr_cmp(addr1, addr2) (memcmp(addr1, addr2, sizeof(uip_ip6addr_t)) == 0)
+#endif /* !UIP_CONF_IPV6 */
+
+/**
+ * Compare two IP addresses with netmasks
+ *
+ * Compares two IP addresses with netmasks. The masks are used to mask
+ * out the bits that are to be compared.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr1, ipaddr2, mask;
+
+ uip_ipaddr(&mask, 255,255,255,0);
+ uip_ipaddr(&ipaddr1, 192,16,1,2);
+ uip_ipaddr(&ipaddr2, 192,16,1,3);
+ if(uip_ipaddr_maskcmp(&ipaddr1, &ipaddr2, &mask)) {
+ printf("They are the same");
+ }
+ \endcode
+ *
+ * \param addr1 The first IP address.
+ * \param addr2 The second IP address.
+ * \param mask The netmask.
+ *
+ * \hideinitializer
+ */
+#if !UIP_CONF_IPV6
+#define uip_ipaddr_maskcmp(addr1, addr2, mask) \
+ (((((u16_t *)addr1)[0] & ((u16_t *)mask)[0]) == \
+ (((u16_t *)addr2)[0] & ((u16_t *)mask)[0])) && \
+ ((((u16_t *)addr1)[1] & ((u16_t *)mask)[1]) == \
+ (((u16_t *)addr2)[1] & ((u16_t *)mask)[1])))
+#else
+#define uip_ipaddr_prefixcmp(addr1, addr2, length) (memcmp(addr1, addr2, length>>3) == 0)
+#endif
+
+
+/**
+ * Check if an address is a broadcast address for a network.
+ *
+ * Checks if an address is the broadcast address for a network. The
+ * network is defined by an IP address that is on the network and the
+ * network's netmask.
+ *
+ * \param addr The IP address.
+ * \param netaddr The network's IP address.
+ * \param netmask The network's netmask.
+ *
+ * \hideinitializer
+ */
+/*#define uip_ipaddr_isbroadcast(addr, netaddr, netmask)
+ ((uip_ipaddr_t *)(addr)).u16 & ((uip_ipaddr_t *)(addr)).u16*/
+
+
+
+/**
+ * Mask out the network part of an IP address.
+ *
+ * Masks out the network part of an IP address, given the address and
+ * the netmask.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr1, ipaddr2, netmask;
+
+ uip_ipaddr(&ipaddr1, 192,16,1,2);
+ uip_ipaddr(&netmask, 255,255,255,0);
+ uip_ipaddr_mask(&ipaddr2, &ipaddr1, &netmask);
+ \endcode
+ *
+ * In the example above, the variable "ipaddr2" will contain the IP
+ * address 192.168.1.0.
+ *
+ * \param dest Where the result is to be placed.
+ * \param src The IP address.
+ * \param mask The netmask.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr_mask(dest, src, mask) do { \
+ ((u16_t *)dest)[0] = ((u16_t *)src)[0] & ((u16_t *)mask)[0]; \
+ ((u16_t *)dest)[1] = ((u16_t *)src)[1] & ((u16_t *)mask)[1]; \
+ } while(0)
+
+/**
+ * Pick the first octet of an IP address.
+ *
+ * Picks out the first octet of an IP address.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ u8_t octet;
+
+ uip_ipaddr(&ipaddr, 1,2,3,4);
+ octet = uip_ipaddr1(&ipaddr);
+ \endcode
+ *
+ * In the example above, the variable "octet" will contain the value 1.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr1(addr) ((addr)->u8[0])
+
+/**
+ * Pick the second octet of an IP address.
+ *
+ * Picks out the second octet of an IP address.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ u8_t octet;
+
+ uip_ipaddr(&ipaddr, 1,2,3,4);
+ octet = uip_ipaddr2(&ipaddr);
+ \endcode
+ *
+ * In the example above, the variable "octet" will contain the value 2.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr2(addr) ((addr)->u8[1])
+
+/**
+ * Pick the third octet of an IP address.
+ *
+ * Picks out the third octet of an IP address.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ u8_t octet;
+
+ uip_ipaddr(&ipaddr, 1,2,3,4);
+ octet = uip_ipaddr3(&ipaddr);
+ \endcode
+ *
+ * In the example above, the variable "octet" will contain the value 3.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr3(addr) ((addr)->u8[2])
+
+/**
+ * Pick the fourth octet of an IP address.
+ *
+ * Picks out the fourth octet of an IP address.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ u8_t octet;
+
+ uip_ipaddr(&ipaddr, 1,2,3,4);
+ octet = uip_ipaddr4(&ipaddr);
+ \endcode
+ *
+ * In the example above, the variable "octet" will contain the value 4.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr4(addr) ((addr)->u8[3])
+
+/**
+ * Convert 16-bit quantity from host byte order to network byte order.
+ *
+ * This macro is primarily used for converting constants from host
+ * byte order to network byte order. For converting variables to
+ * network byte order, use the htons() function instead.
+ *
+ * \hideinitializer
+ */
+#ifndef HTONS
+# if UIP_BYTE_ORDER == UIP_BIG_ENDIAN
+# define HTONS(n) (n)
+# define HTONL(n) (n)
+# else /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */
+# define HTONS(n) (u16_t)((((u16_t) (n)) << 8) | (((u16_t) (n)) >> 8))
+# define HTONL(n) (((u32_t)HTONS(n) << 16) | HTONS((u32_t)(n) >> 16))
+# endif /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */
+#else
+#error "HTONS already defined!"
+#endif /* HTONS */
+
+/**
+ * Convert 16-bit quantity from host byte order to network byte order.
+ *
+ * This function is primarily used for converting variables from host
+ * byte order to network byte order. For converting constants to
+ * network byte order, use the HTONS() macro instead.
+ */
+#ifndef htons
+u16_t htons(u16_t val);
+#endif /* htons */
+#ifndef ntohs
+#define ntohs htons
+#endif
+
+#ifndef htonl
+u32_t htonl(u32_t val);
+#endif /* htonl */
+#ifndef ntohl
+#define ntohl htonl
+#endif
+
+/** @} */
+
+/**
+ * Pointer to the application data in the packet buffer.
+ *
+ * This pointer points to the application data when the application is
+ * called. If the application wishes to send data, the application may
+ * use this space to write the data into before calling uip_send().
+ */
+extern void *uip_appdata;
+
+#if UIP_URGDATA > 0
+/* u8_t *uip_urgdata:
+ *
+ * This pointer points to any urgent data that has been received. Only
+ * present if compiled with support for urgent data (UIP_URGDATA).
+ */
+extern void *uip_urgdata;
+#endif /* UIP_URGDATA > 0 */
+
+
+/**
+ * \defgroup uipdrivervars Variables used in uIP device drivers
+ * @{
+ *
+ * uIP has a few global variables that are used in device drivers for
+ * uIP.
+ */
+
+/**
+ * The length of the packet in the uip_buf buffer.
+ *
+ * The global variable uip_len holds the length of the packet in the
+ * uip_buf buffer.
+ *
+ * When the network device driver calls the uIP input function,
+ * uip_len should be set to the length of the packet in the uip_buf
+ * buffer.
+ *
+ * When sending packets, the device driver should use the contents of
+ * the uip_len variable to determine the length of the outgoing
+ * packet.
+ *
+ */
+extern u16_t uip_len;
+
+/**
+ * The length of the extension headers
+ */
+extern u8_t uip_ext_len;
+/** @} */
+
+#if UIP_URGDATA > 0
+extern u16_t uip_urglen, uip_surglen;
+#endif /* UIP_URGDATA > 0 */
+
+
+/**
+ * Representation of a uIP TCP connection.
+ *
+ * The uip_conn structure is used for identifying a connection. All
+ * but one field in the structure are to be considered read-only by an
+ * application. The only exception is the appstate field whose purpose
+ * is to let the application store application-specific state (e.g.,
+ * file pointers) for the connection. The type of this field is
+ * configured in the "uipopt.h" header file.
+ */
+struct uip_conn {
+ uip_ipaddr_t ripaddr; /**< The IP address of the remote host. */
+
+ u16_t lport; /**< The local TCP port, in network byte order. */
+ u16_t rport; /**< The local remote TCP port, in network byte
+ order. */
+
+ u8_t rcv_nxt[4]; /**< The sequence number that we expect to
+ receive next. */
+ u8_t snd_nxt[4]; /**< The sequence number that was last sent by
+ us. */
+ u16_t len; /**< Length of the data that was previously sent. */
+ u16_t mss; /**< Current maximum segment size for the
+ connection. */
+ u16_t initialmss; /**< Initial maximum segment size for the
+ connection. */
+ u8_t sa; /**< Retransmission time-out calculation state
+ variable. */
+ u8_t sv; /**< Retransmission time-out calculation state
+ variable. */
+ u8_t rto; /**< Retransmission time-out. */
+ u8_t tcpstateflags; /**< TCP state and flags. */
+ u8_t timer; /**< The retransmission timer. */
+ u8_t nrtx; /**< The number of retransmissions for the last
+ segment sent. */
+
+ /** The application state. */
+ uip_tcp_appstate_t appstate;
+};
+
+
+/**
+ * Pointer to the current TCP connection.
+ *
+ * The uip_conn pointer can be used to access the current TCP
+ * connection.
+ */
+
+extern struct uip_conn *uip_conn;
+#if UIP_TCP
+/* The array containing all uIP connections. */
+extern struct uip_conn uip_conns[UIP_CONNS];
+#endif
+
+/**
+ * \addtogroup uiparch
+ * @{
+ */
+
+/**
+ * 4-byte array used for the 32-bit sequence number calculations.
+ */
+extern u8_t uip_acc32[4];
+/** @} */
+
+/**
+ * Representation of a uIP UDP connection.
+ */
+struct uip_udp_conn {
+ uip_ipaddr_t ripaddr; /**< The IP address of the remote peer. */
+ u16_t lport; /**< The local port number in network byte order. */
+ u16_t rport; /**< The remote port number in network byte order. */
+ u8_t ttl; /**< Default time-to-live. */
+
+ /** The application state. */
+ uip_udp_appstate_t appstate;
+};
+
+/**
+ * The current UDP connection.
+ */
+extern struct uip_udp_conn *uip_udp_conn;
+extern struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];
+
+struct uip_router {
+ int (*activate)(void);
+ int (*deactivate)(void);
+ uip_ipaddr_t *(*lookup)(uip_ipaddr_t *destipaddr, uip_ipaddr_t *nexthop);
+};
+
+#if UIP_CONF_ROUTER
+extern const struct uip_router *uip_router;
+
+/**
+ * uIP routing driver registration function.
+ */
+void uip_router_register(const struct uip_router *router);
+#endif /*UIP_CONF_ROUTER*/
+
+#if UIP_CONF_ICMP6
+struct uip_icmp6_conn {
+ uip_icmp6_appstate_t appstate;
+};
+extern struct uip_icmp6_conn uip_icmp6_conns;
+#endif /*UIP_CONF_ICMP6*/
+
+/**
+ * The uIP TCP/IP statistics.
+ *
+ * This is the variable in which the uIP TCP/IP statistics are gathered.
+ */
+#if UIP_STATISTICS == 1
+extern struct uip_stats uip_stat;
+#define UIP_STAT(s) s
+#else
+#define UIP_STAT(s)
+#endif /* UIP_STATISTICS == 1 */
+
+/**
+ * The structure holding the TCP/IP statistics that are gathered if
+ * UIP_STATISTICS is set to 1.
+ *
+ */
+struct uip_stats {
+ struct {
+ uip_stats_t recv; /**< Number of received packets at the IP
+ layer. */
+ uip_stats_t sent; /**< Number of sent packets at the IP
+ layer. */
+ uip_stats_t forwarded;/**< Number of forwarded packets at the IP
+ layer. */
+ uip_stats_t drop; /**< Number of dropped packets at the IP
+ layer. */
+ uip_stats_t vhlerr; /**< Number of packets dropped due to wrong
+ IP version or header length. */
+ uip_stats_t hblenerr; /**< Number of packets dropped due to wrong
+ IP length, high byte. */
+ uip_stats_t lblenerr; /**< Number of packets dropped due to wrong
+ IP length, low byte. */
+ uip_stats_t fragerr; /**< Number of packets dropped since they
+ were IP fragments. */
+ uip_stats_t chkerr; /**< Number of packets dropped due to IP
+ checksum errors. */
+ uip_stats_t protoerr; /**< Number of packets dropped since they
+ were neither ICMP, UDP nor TCP. */
+ } ip; /**< IP statistics. */
+ struct {
+ uip_stats_t recv; /**< Number of received ICMP packets. */
+ uip_stats_t sent; /**< Number of sent ICMP packets. */
+ uip_stats_t drop; /**< Number of dropped ICMP packets. */
+ uip_stats_t typeerr; /**< Number of ICMP packets with a wrong
+ type. */
+ uip_stats_t chkerr; /**< Number of ICMP packets with a bad
+ checksum. */
+ } icmp; /**< ICMP statistics. */
+#if UIP_TCP
+ struct {
+ uip_stats_t recv; /**< Number of recived TCP segments. */
+ uip_stats_t sent; /**< Number of sent TCP segments. */
+ uip_stats_t drop; /**< Number of dropped TCP segments. */
+ uip_stats_t chkerr; /**< Number of TCP segments with a bad
+ checksum. */
+ uip_stats_t ackerr; /**< Number of TCP segments with a bad ACK
+ number. */
+ uip_stats_t rst; /**< Number of recevied TCP RST (reset) segments. */
+ uip_stats_t rexmit; /**< Number of retransmitted TCP segments. */
+ uip_stats_t syndrop; /**< Number of dropped SYNs due to too few
+ connections was avaliable. */
+ uip_stats_t synrst; /**< Number of SYNs for closed ports,
+ triggering a RST. */
+ } tcp; /**< TCP statistics. */
+#endif
+#if UIP_UDP
+ struct {
+ uip_stats_t drop; /**< Number of dropped UDP segments. */
+ uip_stats_t recv; /**< Number of recived UDP segments. */
+ uip_stats_t sent; /**< Number of sent UDP segments. */
+ uip_stats_t chkerr; /**< Number of UDP segments with a bad
+ checksum. */
+ } udp; /**< UDP statistics. */
+#endif /* UIP_UDP */
+#if UIP_CONF_IPV6
+ struct {
+ uip_stats_t drop; /**< Number of dropped ND6 packets. */
+ uip_stats_t recv; /**< Number of recived ND6 packets */
+ uip_stats_t sent; /**< Number of sent ND6 packets */
+ } nd6;
+#endif /*UIP_CONF_IPV6*/
+};
+
+
+/*---------------------------------------------------------------------------*/
+/* All the stuff below this point is internal to uIP and should not be
+ * used directly by an application or by a device driver.
+ */
+/*---------------------------------------------------------------------------*/
+
+
+
+/* u8_t uip_flags:
+ *
+ * When the application is called, uip_flags will contain the flags
+ * that are defined in this file. Please read below for more
+ * information.
+ */
+extern u8_t uip_flags;
+
+/* The following flags may be set in the global variable uip_flags
+ before calling the application callback. The UIP_ACKDATA,
+ UIP_NEWDATA, and UIP_CLOSE flags may both be set at the same time,
+ whereas the others are mutually exclusive. Note that these flags
+ should *NOT* be accessed directly, but only through the uIP
+ functions/macros. */
+
+#define UIP_ACKDATA 1 /* Signifies that the outstanding data was
+ acked and the application should send
+ out new data instead of retransmitting
+ the last data. */
+#define UIP_NEWDATA 2 /* Flags the fact that the peer has sent
+ us new data. */
+#define UIP_REXMIT 4 /* Tells the application to retransmit the
+ data that was last sent. */
+#define UIP_POLL 8 /* Used for polling the application, to
+ check if the application has data that
+ it wants to send. */
+#define UIP_CLOSE 16 /* The remote host has closed the
+ connection, thus the connection has
+ gone away. Or the application signals
+ that it wants to close the
+ connection. */
+#define UIP_ABORT 32 /* The remote host has aborted the
+ connection, thus the connection has
+ gone away. Or the application signals
+ that it wants to abort the
+ connection. */
+#define UIP_CONNECTED 64 /* We have got a connection from a remote
+ host and have set up a new connection
+ for it, or an active connection has
+ been successfully established. */
+
+#define UIP_TIMEDOUT 128 /* The connection has been aborted due to
+ too many retransmissions. */
+
+
+/**
+ * \brief process the options within a hop by hop or destination option header
+ * \retval 0: nothing to send,
+ * \retval 1: drop pkt
+ * \retval 2: ICMP error message to send
+*/
+/*static u8_t
+uip_ext_hdr_options_process(); */
+
+/* uip_process(flag):
+ *
+ * The actual uIP function which does all the work.
+ */
+void uip_process(u8_t flag);
+
+ /* The following flags are passed as an argument to the uip_process()
+ function. They are used to distinguish between the two cases where
+ uip_process() is called. It can be called either because we have
+ incoming data that should be processed, or because the periodic
+ timer has fired. These values are never used directly, but only in
+ the macros defined in this file. */
+
+#define UIP_DATA 1 /* Tells uIP that there is incoming
+ data in the uip_buf buffer. The
+ length of the data is stored in the
+ global variable uip_len. */
+#define UIP_TIMER 2 /* Tells uIP that the periodic timer
+ has fired. */
+#define UIP_POLL_REQUEST 3 /* Tells uIP that a connection should
+ be polled. */
+#define UIP_UDP_SEND_CONN 4 /* Tells uIP that a UDP datagram
+ should be constructed in the
+ uip_buf buffer. */
+#if UIP_UDP
+#define UIP_UDP_TIMER 5
+#endif /* UIP_UDP */
+
+/* The TCP states used in the uip_conn->tcpstateflags. */
+#define UIP_CLOSED 0
+#define UIP_SYN_RCVD 1
+#define UIP_SYN_SENT 2
+#define UIP_ESTABLISHED 3
+#define UIP_FIN_WAIT_1 4
+#define UIP_FIN_WAIT_2 5
+#define UIP_CLOSING 6
+#define UIP_TIME_WAIT 7
+#define UIP_LAST_ACK 8
+#define UIP_TS_MASK 15
+
+#define UIP_STOPPED 16
+
+/* The TCP and IP headers. */
+struct uip_tcpip_hdr {
+#if UIP_CONF_IPV6
+ /* IPv6 header. */
+ u8_t vtc,
+ tcflow;
+ u16_t flow;
+ u8_t len[2];
+ u8_t proto, ttl;
+ uip_ip6addr_t srcipaddr, destipaddr;
+#else /* UIP_CONF_IPV6 */
+ /* IPv4 header. */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ uip_ipaddr_t srcipaddr, destipaddr;
+#endif /* UIP_CONF_IPV6 */
+
+ /* TCP header. */
+ u16_t srcport,
+ destport;
+ u8_t seqno[4],
+ ackno[4],
+ tcpoffset,
+ flags,
+ wnd[2];
+ u16_t tcpchksum;
+ u8_t urgp[2];
+ u8_t optdata[4];
+};
+
+/* The ICMP and IP headers. */
+struct uip_icmpip_hdr {
+#if UIP_CONF_IPV6
+ /* IPv6 header. */
+ u8_t vtc,
+ tcf;
+ u16_t flow;
+ u8_t len[2];
+ u8_t proto, ttl;
+ uip_ip6addr_t srcipaddr, destipaddr;
+#else /* UIP_CONF_IPV6 */
+ /* IPv4 header. */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ uip_ipaddr_t srcipaddr, destipaddr;
+#endif /* UIP_CONF_IPV6 */
+
+ /* ICMP header. */
+ u8_t type, icode;
+ u16_t icmpchksum;
+#if !UIP_CONF_IPV6
+ u16_t id, seqno;
+ u8_t payload[1];
+#endif /* !UIP_CONF_IPV6 */
+};
+
+
+/* The UDP and IP headers. */
+struct uip_udpip_hdr {
+#if UIP_CONF_IPV6
+ /* IPv6 header. */
+ u8_t vtc,
+ tcf;
+ u16_t flow;
+ u8_t len[2];
+ u8_t proto, ttl;
+ uip_ip6addr_t srcipaddr, destipaddr;
+#else /* UIP_CONF_IPV6 */
+ /* IP header. */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ uip_ipaddr_t srcipaddr, destipaddr;
+#endif /* UIP_CONF_IPV6 */
+
+ /* UDP header. */
+ u16_t srcport,
+ destport;
+ u16_t udplen;
+ u16_t udpchksum;
+};
+
+/*
+ * In IPv6 the length of the L3 headers before the transport header is
+ * not fixed, due to the possibility to include extension option headers
+ * after the IP header. hence we split here L3 and L4 headers
+ */
+/* The IP header */
+struct uip_ip_hdr {
+#if UIP_CONF_IPV6
+ /* IPV6 header */
+ u8_t vtc;
+ u8_t tcflow;
+ u16_t flow;
+ u8_t len[2];
+ u8_t proto, ttl;
+ uip_ip6addr_t srcipaddr, destipaddr;
+#else /* UIP_CONF_IPV6 */
+ /* IPV4 header */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ uip_ipaddr_t srcipaddr, destipaddr;
+#endif /* UIP_CONF_IPV6 */
+};
+
+
+/*
+ * IPv6 extension option headers: we are able to process
+ * the 4 extension headers defined in RFC2460 (IPv6):
+ * - Hop by hop option header, destination option header:
+ * These two are not used by any core IPv6 protocol, hence
+ * we just read them and go to the next. They convey options,
+ * the options defined in RFC2460 are Pad1 and PadN, which do
+ * some padding, and that we do not need to read (the length
+ * field in the header is enough)
+ * - Routing header: this one is most notably used by MIPv6,
+ * which we do not implement, hence we just read it and go
+ * to the next
+ * - Fragmentation header: we read this header and are able to
+ * reassemble packets
+ *
+ * We do not offer any means to send packets with extension headers
+ *
+ * We do not implement Authentication and ESP headers, which are
+ * used in IPSec and defined in RFC4302,4303,4305,4385
+ */
+/* common header part */
+struct uip_ext_hdr {
+ u8_t next;
+ u8_t len;
+};
+
+/* Hop by Hop option header */
+struct uip_hbho_hdr {
+ u8_t next;
+ u8_t len;
+};
+
+/* destination option header */
+struct uip_desto_hdr {
+ u8_t next;
+ u8_t len;
+};
+
+/* We do not define structures for PAD1 and PADN options */
+
+/*
+ * routing header
+ * the routing header as 4 common bytes, then routing header type
+ * specific data there are several types of routing header. Type 0 was
+ * deprecated as per RFC5095 most notable other type is 2, used in
+ * RFC3775 (MIPv6) here we do not implement MIPv6, so we just need to
+ * parse the 4 first bytes
+ */
+struct uip_routing_hdr {
+ u8_t next;
+ u8_t len;
+ u8_t routing_type;
+ u8_t seg_left;
+};
+
+/* fragmentation header */
+struct uip_frag_hdr {
+ u8_t next;
+ u8_t res;
+ u16_t offsetresmore;
+ u32_t id;
+};
+
+/*
+ * an option within the destination or hop by hop option headers
+ * it contains type an length, which is true for all options but PAD1
+ */
+struct uip_ext_hdr_opt {
+ u8_t type;
+ u8_t len;
+};
+
+/* PADN option */
+struct uip_ext_hdr_opt_padn {
+ u8_t opt_type;
+ u8_t opt_len;
+};
+
+/* TCP header */
+struct uip_tcp_hdr {
+ u16_t srcport;
+ u16_t destport;
+ u8_t seqno[4];
+ u8_t ackno[4];
+ u8_t tcpoffset;
+ u8_t flags;
+ u8_t wnd[2];
+ u16_t tcpchksum;
+ u8_t urgp[2];
+ u8_t optdata[4];
+};
+
+/* The ICMP headers. */
+struct uip_icmp_hdr {
+ u8_t type, icode;
+ u16_t icmpchksum;
+#if !UIP_CONF_IPV6
+ u16_t id, seqno;
+#endif /* !UIP_CONF_IPV6 */
+};
+
+
+/* The UDP headers. */
+struct uip_udp_hdr {
+ u16_t srcport;
+ u16_t destport;
+ u16_t udplen;
+ u16_t udpchksum;
+};
+
+
+/**
+ * The buffer size available for user data in the \ref uip_buf buffer.
+ *
+ * This macro holds the available size for user data in the \ref
+ * uip_buf buffer. The macro is intended to be used for checking
+ * bounds of available user data.
+ *
+ * Example:
+ \code
+ snprintf(uip_appdata, UIP_APPDATA_SIZE, "%u\n", i);
+ \endcode
+ *
+ * \hideinitializer
+ */
+#define UIP_APPDATA_SIZE (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN)
+#define UIP_APPDATA_PTR (void *)&uip_buf[UIP_LLH_LEN + UIP_TCPIP_HLEN]
+
+#define UIP_PROTO_ICMP 1
+#define UIP_PROTO_TCP 6
+#define UIP_PROTO_UDP 17
+#define UIP_PROTO_ICMP6 58
+
+
+#if UIP_CONF_IPV6
+/** @{ */
+/** \brief extension headers types */
+#define UIP_PROTO_HBHO 0
+#define UIP_PROTO_DESTO 60
+#define UIP_PROTO_ROUTING 43
+#define UIP_PROTO_FRAG 44
+#define UIP_PROTO_NONE 59
+/** @} */
+
+/** @{ */
+/** \brief Destination and Hop By Hop extension headers option types */
+#define UIP_EXT_HDR_OPT_PAD1 0
+#define UIP_EXT_HDR_OPT_PADN 1
+/** @} */
+
+/** @{ */
+/**
+ * \brief Bitmaps for extension header processing
+ *
+ * When processing extension headers, we should record somehow which one we
+ * see, because you cannot have twice the same header, except for destination
+ * We store all this in one u8_t bitmap one bit for each header expected. The
+ * order in the bitmap is the order recommended in RFC2460
+ */
+#define UIP_EXT_HDR_BITMAP_HBHO 0x01
+#define UIP_EXT_HDR_BITMAP_DESTO1 0x02
+#define UIP_EXT_HDR_BITMAP_ROUTING 0x04
+#define UIP_EXT_HDR_BITMAP_FRAG 0x08
+#define UIP_EXT_HDR_BITMAP_AH 0x10
+#define UIP_EXT_HDR_BITMAP_ESP 0x20
+#define UIP_EXT_HDR_BITMAP_DESTO2 0x40
+/** @} */
+
+
+#endif /* UIP_CONF_IPV6 */
+
+
+/* Header sizes. */
+#if UIP_CONF_IPV6
+#define UIP_IPH_LEN 40
+#define UIP_FRAGH_LEN 8
+#else /* UIP_CONF_IPV6 */
+#define UIP_IPH_LEN 20 /* Size of IP header */
+#endif /* UIP_CONF_IPV6 */
+
+#define UIP_UDPH_LEN 8 /* Size of UDP header */
+#define UIP_TCPH_LEN 20 /* Size of TCP header */
+#ifdef UIP_IPH_LEN
+#define UIP_ICMPH_LEN 4 /* Size of ICMP header */
+#endif
+#define UIP_IPUDPH_LEN (UIP_UDPH_LEN + UIP_IPH_LEN) /* Size of IP +
+ * UDP
+ * header */
+#define UIP_IPTCPH_LEN (UIP_TCPH_LEN + UIP_IPH_LEN) /* Size of IP +
+ * TCP
+ * header */
+#define UIP_TCPIP_HLEN UIP_IPTCPH_LEN
+#define UIP_IPICMPH_LEN (UIP_IPH_LEN + UIP_ICMPH_LEN) /* size of ICMP
+ + IP header */
+#define UIP_LLIPH_LEN (UIP_LLH_LEN + UIP_IPH_LEN) /* size of L2
+ + IP header */
+#if UIP_CONF_IPV6
+/**
+ * The sums below are quite used in ND. When used for uip_buf, we
+ * include link layer length when used for uip_len, we do not, hence
+ * we need values with and without LLH_LEN we do not use capital
+ * letters as these values are variable
+ */
+#define uip_l2_l3_hdr_len (UIP_LLH_LEN + UIP_IPH_LEN + uip_ext_len)
+#define uip_l2_l3_icmp_hdr_len (UIP_LLH_LEN + UIP_IPH_LEN + uip_ext_len + UIP_ICMPH_LEN)
+#define uip_l3_hdr_len (UIP_IPH_LEN + uip_ext_len)
+#define uip_l3_icmp_hdr_len (UIP_IPH_LEN + uip_ext_len + UIP_ICMPH_LEN)
+#endif /*UIP_CONF_IPV6*/
+
+
+#if UIP_FIXEDADDR
+extern const uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr;
+#else /* UIP_FIXEDADDR */
+extern uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr;
+#endif /* UIP_FIXEDADDR */
+extern const uip_ipaddr_t uip_broadcast_addr;
+extern const uip_ipaddr_t uip_all_zeroes_addr;
+
+#if UIP_FIXEDETHADDR
+extern const uip_lladdr_t uip_lladdr;
+#else
+extern uip_lladdr_t uip_lladdr;
+#endif
+
+
+
+
+#ifdef UIP_CONF_IPV6
+/**
+ * \brief Is IPv6 address a the unspecified address
+ * a is of type uip_ipaddr_t
+ */
+#define uip_is_addr_unspecified(a) \
+ ((((a)->u16[0]) == 0) && \
+ (((a)->u16[1]) == 0) && \
+ (((a)->u16[2]) == 0) && \
+ (((a)->u16[3]) == 0) && \
+ (((a)->u16[4]) == 0) && \
+ (((a)->u16[5]) == 0) && \
+ (((a)->u16[6]) == 0) && \
+ (((a)->u16[7]) == 0))
+
+/** \brief Is IPv6 address a the link local all-nodes multicast address */
+#define uip_is_addr_linklocal_allnodes_mcast(a) \
+ ((((a)->u8[0]) == 0xff) && \
+ (((a)->u8[1]) == 0x02) && \
+ (((a)->u16[1]) == 0) && \
+ (((a)->u16[2]) == 0) && \
+ (((a)->u16[3]) == 0) && \
+ (((a)->u16[4]) == 0) && \
+ (((a)->u16[5]) == 0) && \
+ (((a)->u16[6]) == 0) && \
+ (((a)->u8[14]) == 0) && \
+ (((a)->u8[15]) == 0x01))
+
+/** \brief set IP address a to unspecified */
+#define uip_create_unspecified(a) uip_ip6addr(a, 0, 0, 0, 0, 0, 0, 0, 0)
+
+/** \brief set IP address a to the link local all-nodes multicast address */
+#define uip_create_linklocal_allnodes_mcast(a) uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0001)
+
+/** \brief set IP address a to the link local all-routers multicast address */
+#define uip_create_linklocal_allrouters_mcast(a) uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0002)
+
+/**
+ * \brief is addr (a) a solicited node multicast address, see RFC3513
+ * a is of type uip_ipaddr_t*
+ */
+#define uip_is_addr_solicited_node(a) \
+ ((((a)->u8[0]) == 0xFF) && \
+ (((a)->u8[1]) == 0x02) && \
+ (((a)->u16[1]) == 0) && \
+ (((a)->u16[2]) == 0) && \
+ (((a)->u16[3]) == 0) && \
+ (((a)->u16[4]) == 0) && \
+ (((a)->u16[5]) == 1) && \
+ (((a)->u8[12]) == 0xFF))
+
+/**
+ * \briefput in b the solicited node address corresponding to address a
+ * both a and b are of type uip_ipaddr_t*
+ * */
+#define uip_create_solicited_node(a, b) \
+ (((b)->u8[0]) = 0xFF); \
+ (((b)->u8[1]) = 0x02); \
+ (((b)->u16[1]) = 0); \
+ (((b)->u16[2]) = 0); \
+ (((b)->u16[3]) = 0); \
+ (((b)->u16[4]) = 0); \
+ (((b)->u8[10]) = 0); \
+ (((b)->u8[11]) = 0x01); \
+ (((b)->u8[12]) = 0xFF); \
+ (((b)->u8[13]) = ((a)->u8[13])); \
+ (((b)->u16[7]) = ((a)->u16[7]))
+
+/**
+ * \brief is addr (a) a link local unicast address, see RFC3513
+ * i.e. is (a) on prefix FE80::/10
+ * a is of type uip_ipaddr_t*
+ */
+#define uip_is_addr_link_local(a) \
+ ((((a)->u8[0]) == 0xFE) && \
+ (((a)->u8[1]) == 0x80))
+
+/**
+ * \brief was addr (a) forged based on the mac address m
+ * a type is uip_ipaddr_t
+ * m type is uiplladdr_t
+ */
+#if UIP_CONF_LL_802154
+#define uip_is_addr_mac_addr_based(a, m) \
+ ((((a)->u8[8]) == (((m)->addr[0]) ^ 0x02)) && \
+ (((a)->u8[9]) == (m)->addr[1]) && \
+ (((a)->u8[10]) == (m)->addr[2]) && \
+ (((a)->u8[11]) == (m)->addr[3]) && \
+ (((a)->u8[12]) == (m)->addr[4]) && \
+ (((a)->u8[13]) == (m)->addr[5]) && \
+ (((a)->u8[14]) == (m)->addr[6]) && \
+ (((a)->u8[15]) == (m)->addr[7]))
+#else
+
+#define uip_is_addr_mac_addr_based(a, m) \
+ ((((a)->u8[8]) == (((m)->addr[0]) | 0x02)) && \
+ (((a)->u8[9]) == (m)->addr[1]) && \
+ (((a)->u8[10]) == (m)->addr[2]) && \
+ (((a)->u8[11]) == 0xff) && \
+ (((a)->u8[12]) == 0xfe) && \
+ (((a)->u8[13]) == (m)->addr[3]) && \
+ (((a)->u8[14]) == (m)->addr[4]) && \
+ (((a)->u8[15]) == (m)->addr[5]))
+
+#endif /*UIP_CONF_LL_802154*/
+
+/**
+ * \brief is address a multicast address, see RFC 3513
+ * a is of type uip_ipaddr_t*
+ * */
+#define uip_is_addr_mcast(a) \
+ (((a)->u8[0]) == 0xFF)
+
+/**
+ * \brief is group-id of multicast address a
+ * the all nodes group-id
+ */
+#define uip_is_mcast_group_id_all_nodes(a) \
+ ((((a)->u16[1]) == 0) && \
+ (((a)->u16[2]) == 0) && \
+ (((a)->u16[3]) == 0) && \
+ (((a)->u16[4]) == 0) && \
+ (((a)->u16[5]) == 0) && \
+ (((a)->u16[6]) == 0) && \
+ (((a)->u8[14]) == 0) && \
+ (((a)->u8[15]) == 1))
+
+/**
+ * \brief is group-id of multicast address a
+ * the all routers group-id
+ */
+#define uip_is_mcast_group_id_all_routers(a) \
+ ((((a)->u16[1]) == 0) && \
+ (((a)->u16[2]) == 0) && \
+ (((a)->u16[3]) == 0) && \
+ (((a)->u16[4]) == 0) && \
+ (((a)->u16[5]) == 0) && \
+ (((a)->u16[6]) == 0) && \
+ (((a)->u8[14]) == 0) && \
+ (((a)->u8[15]) == 2))
+
+
+#endif /*UIP_CONF_IPV6*/
+
+/**
+ * Calculate the Internet checksum over a buffer.
+ *
+ * The Internet checksum is the one's complement of the one's
+ * complement sum of all 16-bit words in the buffer.
+ *
+ * See RFC1071.
+ *
+ * \param buf A pointer to the buffer over which the checksum is to be
+ * computed.
+ *
+ * \param len The length of the buffer over which the checksum is to
+ * be computed.
+ *
+ * \return The Internet checksum of the buffer.
+ */
+u16_t uip_chksum(u16_t *buf, u16_t len);
+
+/**
+ * Calculate the IP header checksum of the packet header in uip_buf.
+ *
+ * The IP header checksum is the Internet checksum of the 20 bytes of
+ * the IP header.
+ *
+ * \return The IP header checksum of the IP header in the uip_buf
+ * buffer.
+ */
+u16_t uip_ipchksum(void);
+
+/**
+ * Calculate the TCP checksum of the packet in uip_buf and uip_appdata.
+ *
+ * The TCP checksum is the Internet checksum of data contents of the
+ * TCP segment, and a pseudo-header as defined in RFC793.
+ *
+ * \return The TCP checksum of the TCP segment in uip_buf and pointed
+ * to by uip_appdata.
+ */
+u16_t uip_tcpchksum(void);
+
+/**
+ * Calculate the UDP checksum of the packet in uip_buf and uip_appdata.
+ *
+ * The UDP checksum is the Internet checksum of data contents of the
+ * UDP segment, and a pseudo-header as defined in RFC768.
+ *
+ * \return The UDP checksum of the UDP segment in uip_buf and pointed
+ * to by uip_appdata.
+ */
+u16_t uip_udpchksum(void);
+
+/**
+ * Calculate the ICMP checksum of the packet in uip_buf.
+ *
+ * \return The ICMP checksum of the ICMP packet in uip_buf
+ */
+u16_t uip_icmp6chksum(void);
+
+
+#endif /* __UIP_H__ */
+
+
+/** @} */
projects / pub / USBasp.git / blobdiff