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Diffstat (limited to 'lib/lufa/Projects/Webserver/Lib/uip/uip.h')
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diff --git a/lib/lufa/Projects/Webserver/Lib/uip/uip.h b/lib/lufa/Projects/Webserver/Lib/uip/uip.h deleted file mode 100644 index 7b87a2c77c..0000000000 --- a/lib/lufa/Projects/Webserver/Lib/uip/uip.h +++ /dev/null @@ -1,2130 +0,0 @@ - -/** - * \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]; /* Initialiser, 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]; /* Initialiser, 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 initialize 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 connection, 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 sixteen 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 received 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 received 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 available. */ - 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 received 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 received 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__ */ - - -/** @} */ - |