Initial import of files for the Contiki development environment
diff --git a/contiki-devel-environment/include/uip.h b/contiki-devel-environment/include/uip.h
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+/*
+ * Copyright (c) 2001-2002, 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Adam Dunkels.
+ * 4. 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 1.1 2003/04/09 12:55:06 adamdunkels Exp $
+ *
+ */
+
+#ifndef __UIP_H__
+#define __UIP_H__
+
+#include "uipopt.h"
+
+#ifndef UIP_IPV6
+#define UIP_IPV6 0
+#endif
+
+/*-----------------------------------------------------------------------------------*/
+/* First, the functions that should be called from the
+ * system. Initialization, the periodic timer and incoming packets are
+ * handled by the following three functions.
+ */
+
+/* uip_init(void):
+ *
+ * Must be called at boot up to configure the uIP data structures.
+ */
+void uip_init(void);
+
+/* uip_periodic(conn):
+ *
+ * Should be called when the periodic timer has fired. Should be
+ * called once per connection (0 - UIP_CONNS).
+ */
+#define uip_periodic(conn) do { uip_conn = &uip_conns[conn]; \
+ uip_process(UIP_TIMER); } while (0)
+
+/* uip_input(void):
+ *
+ * Is called when the network device driver has received new data.
+ */
+#define uip_input() uip_process(UIP_DATA)
+
+/* uip_sethostaddr(addr):
+ *
+ * Is used to set the IP address.
+ */
+#define uip_sethostaddr(addr) do { uip_hostaddr[0] = addr[0]; \
+ uip_hostaddr[1] = addr[1]; } while(0)
+
+#if UIP_UDP
+/* uip_udp_periodic(conn):
+ */
+#define uip_udp_periodic(conn) do { uip_udp_conn = &uip_udp_conns[conn]; \
+ uip_process(UIP_UDP_TIMER); } while (0)
+#endif /* UIP_UDP */
+/*-----------------------------------------------------------------------------------*/
+/* 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.
+*/
+
+/* uip_listen(port):
+ *
+ * Starts listening to the specified port.
+ */
+void uip_listen(u16_t port);
+
+/* uip_connect(ripaddr, port):
+ *
+ * Returns a connection identifier that connects to a port on the
+ * specified host (given in ripaddr). If no connections are avaliable,
+ * the function returns NULL. This function is avaliable only if
+ * support for active open has been configured (#define
+ * UIP_ACTIVE_OPEN 1 in uipopt.h)
+ */
+struct uip_conn *uip_connect(u16_t *ripaddr, u16_t port);
+
+#if UIP_UDP
+/* uip_udp_new(ripaddr, rport):
+ *
+ * Sets up a new UDP "connection" with the specified parameters.
+ */
+struct uip_udp_conn *uip_udp_new(u16_t *ripaddr, u16_t rport);
+
+/* uip_udp_remove(conn):
+ *
+ * Removes the UDP "connection".
+ */
+#define uip_udp_remove(conn) (conn)->lport = 0
+
+/* uip_udp_send(len):
+ *
+ * Sends a UDP datagram of length len. The data must be present in the
+ * uip_buf buffer (pointed to by uip_appdata).
+ */
+#define uip_udp_send(len) uip_slen = (len)
+#endif /* UIP_UDP */
+
+
+/* uip_outstanding(conn):
+ *
+ * Checks whether a connection has outstanding (i.e., unacknowledged)
+ * data.
+ */
+#define uip_outstanding(conn) ((conn)->len)
+
+/* uip_send(data, len):
+ *
+ * Send data on the current connection. The length of the data must
+ * not exceed the maxium segment size (MSS) for the connection.
+ */
+#define uip_send(data, len) do { uip_appdata = (data); uip_slen = (len);} while(0)
+
+/* uip_datalen():
+ *
+ * The length of the data that is currently avaliable (if avaliable)
+ * in the uip_appdata buffer. The test function uip_data() is
+ * used to check if data is avaliable.
+ */
+#define uip_datalen() uip_len
+
+#define uip_urgdatalen() uip_urglen
+
+/* uip_close():
+ *
+ * Close the current connection.
+ */
+#define uip_close() (uip_flags = UIP_CLOSE)
+
+/* uip_abort():
+ *
+ * Abort the current connection.
+ */
+#define uip_abort() (uip_flags = UIP_ABORT)
+
+/* uip_stop():
+ *
+ * Close our receiver's window so that we stop receiving data for the
+ * current connection.
+ */
+#define uip_stop() (uip_conn->tcpstateflags |= UIP_STOPPED)
+
+/* uip_stopped():
+ *
+ * Find out if the current connection has been previously stopped.
+ */
+#define uip_stopped(conn) ((conn)->tcpstateflags & UIP_STOPPED)
+
+/* uip_restart():
+ *
+ * Open the window again so that we start receiving data for the
+ * current connection.
+ */
+#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. */
+
+/* uip_newdata():
+ *
+ * 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
+ * avaliable through the uip_len variable.
+ */
+#define uip_newdata() (uip_flags & UIP_NEWDATA)
+
+/* uip_acked():
+ *
+ * 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. uip_reset_acked() can be used to reset the acked
+ * flag.
+ */
+#define uip_acked() (uip_flags & UIP_ACKDATA)
+#define uip_reset_acked() (uip_flags &= ~UIP_ACKDATA)
+
+/* uip_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()).
+ */
+#define uip_connected() (uip_flags & UIP_CONNECTED)
+
+/* uip_closed():
+ *
+ * Is non-zero if the connection has been closed by the remote
+ * host. The application may do the necessary clean-ups.
+ */
+#define uip_closed() (uip_flags & UIP_CLOSE)
+
+/* uip_aborted():
+ *
+ * Non-zero if the current connection has been aborted (reset) by the
+ * remote host.
+ */
+#define uip_aborted() (uip_flags & UIP_ABORT)
+
+/* uip_timedout():
+ *
+ * Non-zero if the current connection has been aborted due to too many
+ * retransmissions.
+ */
+#define uip_timedout() (uip_flags & UIP_TIMEDOUT)
+
+/* uip_rexmit():
+ *
+ * Reduces to non-zero if the previously sent data has been lost in
+ * the network, and the application should retransmit it. The
+ * application should set the uip_appdata buffer and the uip_len
+ * variable just as it did the last time this data was to be
+ * transmitted.
+ */
+#define uip_rexmit() (uip_flags & UIP_REXMIT)
+
+/* uip_poll():
+ *
+ * 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.
+ */
+#define uip_poll() (uip_flags & UIP_POLL)
+
+/* uip_mss():
+ *
+ * Gives the current maxium segment size (MSS) of the current
+ * connection.
+ */
+#define uip_mss() (uip_conn->mss)
+
+
+/* uIP convenience and converting functions. */
+
+/* uip_ipaddr(&ipaddr, addr0,addr1,addr2,addr3):
+ *
+ * Packs an IP address into a two element 16-bit array. Such arrays
+ * are used to represent IP addresses in uIP.
+ */
+#define uip_ipaddr(addr, addr0,addr1,addr2,addr3) do { \
+ (addr)[0] = HTONS(((addr0) << 8) | (addr1)); \
+ (addr)[1] = HTONS(((addr2) << 8) | (addr3)); \
+ } while(0)
+
+/* HTONS():
+ *
+ * Macros for converting 16-bit quantities between host and network
+ * byte order.
+ */
+#ifndef HTONS
+# if BYTE_ORDER == BIG_ENDIAN
+# define HTONS(n) (n)
+# else /* BYTE_ORDER == BIG_ENDIAN */
+# define HTONS(n) ((((u16_t)((n) & 0xff)) << 8) | (((n) & 0xff00) >> 8))
+# endif /* BYTE_ORDER == BIG_ENDIAN */
+#endif /* HTONS */
+
+#ifndef htons
+u16_t htons(u16_t val);
+#endif /* htons */
+
+/*-----------------------------------------------------------------------------------*/
+/* The following global variables are used for passing parameters
+ * between uIP, the network device driver and the application. */
+/*-----------------------------------------------------------------------------------*/
+
+/* u8_t uip_buf[UIP_BUFSIZE]:
+ *
+ * The uip_buf array is used to hold incoming and outgoing
+ * packets. The device driver fills this with incoming packets.
+ */
+extern u8_t uip_buf[UIP_BUFSIZE];
+
+/* u8_t *uip_appdata:
+ *
+ * This pointer points to the application data when the application is
+ * called. If the application wishes to send data, this is where the
+ * application should write it. The application can also point this to
+ * another location.
+ */
+extern volatile u8_t *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 volatile u8_t *uip_urgdata;
+#endif /* UIP_URGDATA > 0 */
+
+
+/* u[8|16]_t uip_len:
+ *
+ * When the application is called, uip_len contains the length of any
+ * new data that has been received from the remote host. The
+ * application should set this variable to the size of any data that
+ * the application wishes to send. When the network device driver
+ * output function is called, uip_len should contain the length of the
+ * outgoing packet.
+ */
+#if UIP_BUFSIZE > 255
+extern volatile u16_t uip_len, uip_slen;
+#else
+extern volatile u8_t uip_len, uip_slen;
+#endif
+
+#if UIP_URGDATA > 0
+extern volatile u8_t uip_urglen, uip_surglen;
+#endif /* UIP_URGDATA > 0 */
+
+extern volatile u8_t uip_acc32[4];
+
+/* struct uip_conn:
+ *
+ * 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 whos purpose
+ * is to let the application store application-specific state (e.g.,
+ * file pointers) for the connection. The size of this field is
+ * configured in the "uipopt.h" header file.
+ */
+struct uip_conn {
+#if UIP_IPV6
+ u16_t ripaddr[8]; /* The IP address of the remote peer. */
+#else /* UIP_IPV6 */
+ u16_t ripaddr[2]; /* The IP address of the remote peer. */
+#endif /* UIP_IPV6 */
+
+ u16_t lport, rport; /* The local and the remote port. */
+
+ 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. */
+#if UIP_TCP_MSS > 255
+ u16_t len;
+ u16_t mss; /* Maximum segment size for the connection. */
+#else
+ u8_t len;
+ u8_t mss;
+#endif /* UIP_TCP_MSS */
+ u8_t sa, sv, rto;
+ u8_t tcpstateflags; /* TCP state and flags. */
+ u8_t timer; /* The retransmission timer. */
+ u8_t nrtx; /* Counts the number of retransmissions for a
+ particular segment. */
+
+ u8_t appstate[UIP_APPSTATE_SIZE];
+};
+
+/* struct uip_conn *uip_conn:
+ *
+ * When the application is called, uip_conn will point to the current
+ * conntection, the one that should be processed by the
+ * application. The uip_conns[] array is a list containing all
+ * connections.
+ */
+extern struct uip_conn *uip_conn;
+extern struct uip_conn uip_conns[UIP_CONNS];
+
+#if UIP_UDP
+/* struct uip_udp_conn:
+ *
+ * The uip_udp_conn structure is used for identifying UDP
+ * "connections".
+ */
+struct uip_udp_conn {
+#if UIP_IPV6
+ u16_t ripaddr[8]; /* The IP address of the remote peer. */
+#else /* UIP_IPV6 */
+ u16_t ripaddr[2]; /* The IP address of the remote peer. */
+#endif /* UIP_IPV6 */
+ u16_t lport, rport;
+};
+
+extern struct uip_udp_conn *uip_udp_conn;
+extern struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];
+#endif /* UIP_UDP */
+
+/* struct uip_stats:
+ *
+ * Contains statistics about the TCP/IP stack.
+ */
+struct uip_stats {
+ struct {
+ uip_stats_t drop;
+ uip_stats_t recv;
+ uip_stats_t sent;
+ 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 nor TCP. */
+ } ip;
+ struct {
+ uip_stats_t drop;
+ uip_stats_t recv;
+ uip_stats_t sent;
+ uip_stats_t typeerr;
+ } icmp;
+ struct {
+ uip_stats_t drop;
+ uip_stats_t recv;
+ uip_stats_t sent;
+ uip_stats_t chkerr;
+ uip_stats_t ackerr;
+ uip_stats_t rst;
+ uip_stats_t rexmit;
+ 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;
+};
+
+extern struct uip_stats uip_stat;
+
+
+/*-----------------------------------------------------------------------------------*/
+/* 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
+ * infomation.
+ */
+extern volatile u8_t uip_flags;
+
+/* The following flags may be set in the global variable uip_flags
+ before calling the application callback. The UIP_ACKDATA and
+ UIP_NEWDATA flags may both be set at the same time, whereas the
+ others are mutualy exclusive. Note that these flags should *NOT* be
+ accessed directly, but 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. */
+
+
+/* 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. */
+
+#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. */
+#if UIP_UDP
+#define UIP_UDP_TIMER 3
+#endif /* UIP_UDP */
+
+/* The TCP states used in the uip_conn->tcpstateflags. */
+#define CLOSED 0
+#define SYN_RCVD 1
+#define SYN_SENT 2
+#define ESTABLISHED 3
+#define FIN_WAIT_1 4
+#define FIN_WAIT_2 5
+#define CLOSING 6
+#define TIME_WAIT 7
+#define LAST_ACK 8
+#define TS_MASK 15
+
+#define UIP_STOPPED 16
+
+#if UIP_IPV6
+#define UIP_TCPIP_HLEN 60
+#else /* UIP_IPV6 */
+#define UIP_TCPIP_HLEN 40
+#endif /* UIP_IPV6 */
+
+/* The TCP and IP headers. */
+typedef struct {
+ /* IP header. */
+#if UIP_IPV6
+ u8_t vtc,
+ tcfl;
+ u16_t fl;
+ u8_t len[2];
+ u8_t nxthdr, hoplim;
+ u16_t srcipaddr[8],
+ destipaddr[8];
+#else /* UIP_IPV6 */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ u16_t srcipaddr[2],
+ destipaddr[2];
+#endif /* UIP_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];
+} uip_tcpip_hdr;
+
+/* The ICMP and IP headers. */
+typedef struct {
+ /* IP header. */
+#if UIP_IPV6
+ u16_t vtcfl;
+ u16_t fl;
+ u8_t len[2];
+ u8_t nxthdr, hoplim;
+ u16_t srcipaddr[8],
+ destipaddr[8];
+#else /* UIP_IPV6 */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ u16_t srcipaddr[2],
+ destipaddr[2];
+#endif /* UIP_IPV6 */
+ /* ICMP (echo) header. */
+ u8_t type, icode;
+ u16_t icmpchksum;
+ u16_t id, seqno;
+} uip_icmpip_hdr;
+
+
+/* The UDP and IP headers. */
+typedef struct {
+ /* IP header. */
+#if UIP_IPV6
+ u8_t vtc,
+ tcfl;
+ u16_t fl;
+ u8_t len[2];
+ u8_t nxthdr, hoplim;
+ u16_t srcipaddr[8],
+ destipaddr[8];
+#else /* UIP_IPV6 */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ u16_t srcipaddr[2],
+ destipaddr[2];
+#endif /* UIP_IPV6 */
+
+ /* UDP header. */
+ u16_t srcport,
+ destport;
+ u16_t udplen;
+ u16_t udpchksum;
+} uip_udpip_hdr;
+
+#define UIP_PROTO_ICMP 1
+#define UIP_PROTO_TCP 6
+#define UIP_PROTO_UDP 17
+
+#if UIP_FIXEDADDR
+#if UIP_IPV6
+extern const u16_t uip_hostaddr[8];
+#else /* UIP_IPV6 */
+extern const u16_t uip_hostaddr[2];
+#endif /* UIP_IPV6 */
+#else /* UIP_FIXEDADDR */
+#if UIP_IPV6
+extern u16_t uip_hostaddr[8];
+#else /* UIP_IPV6 */
+extern u16_t uip_hostaddr[2];
+#endif /* UIP_IPV6 */
+#endif /* UIP_FIXEDADDR */
+
+#endif /* __UIP_H__ */
+
+
+
+
+
+
+