/** | |
* \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 "net/uipopt.h" | |
#include "uip-conf.h" | |
/** | |
* Representation of an IP address. | |
* | |
*/ | |
#if UIP_CONF_IPV6 != 0 | |
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]; | |
} 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 */ | |
#include "net/pack_struct_start.h" | |
struct uip_eth_addr | |
{ | |
u8_t addr[6]; | |
} | |
#include "net/pack_struct_end.h" | |
#ifdef 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*/ | |
#ifdef 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*/ | |
//_RB_#include "net/tcpip.h" | |
/*---------------------------------------------------------------------------*/ | |
/* 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 | |
*/ | |
#ifdef 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 */ | |
#ifdef 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 | |
*/ | |
#ifndef UIP_CONF_EXTERNAL_BUFFER | |
CCIF extern u8_t uip_buf[UIP_BUFSIZE + 2]; | |
#else | |
CCIF extern unsigned char *uip_buf; | |
#endif | |
/** @} */ | |
/*---------------------------------------------------------------------------*/ | |
/* 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 | |
*/ | |
CCIF 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 ) \ | |
do \ | |
{ \ | |
(dest)->u8[0] = (src)->u8[0]; \ | |
(dest)->u8[1] = (src)->u8[1]; \ | |
(dest)->u8[2] = (src)->u8[2]; \ | |
(dest)->u8[3] = (src)->u8[3]; \ | |
} while( 0 ) | |
#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 | |
CCIF u16_t htons( u16_t val ); | |
#endif /* htons */ | |
#ifndef ntohs | |
#define ntohs htons | |
#endif | |
#ifndef htonl | |
CCIF 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(). | |
*/ | |
CCIF 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. | |
* | |
*/ | |
CCIF 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. | |
*/ | |
CCIF extern struct uip_conn *uip_conn; | |
#ifdef UIP_TCP | |
/* The array containing all uIP connections. */ | |
CCIF 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]; | |
/** @} */ | |
#if UIP_UDP == 1 | |
/** | |
* 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]; | |
#endif /* UIP_UDP */ | |
struct uip_router | |
{ | |
int ( *activate ) ( void ); | |
int ( *deactivate ) ( void ); | |
uip_ipaddr_t * ( *lookup ) ( uip_ipaddr_t *destipaddr, uip_ipaddr_t *nexthop ); | |
}; | |
#ifdef 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*/ | |
#ifdef 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. */ | |
#ifdef 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 | |
#ifdef 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 != 0 | |
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. | |
*/ | |
CCIF 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. */ | |
#ifdef 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. */ | |
#include "net/pack_struct_start.h" | |
struct uip_tcpip_hdr | |
{ | |
#if UIP_CONF_IPV6 != 0 | |
/* 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]; | |
} | |
#include "net/pack_struct_end.h" | |
/* The ICMP and IP headers. */ | |
#include "net/pack_struct_start.h" | |
struct uip_icmpip_hdr | |
{ | |
#if UIP_CONF_IPV6 != 0 | |
/* 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 */ | |
} | |
#include "net/pack_struct_end.h" | |
/* The UDP and IP headers. */ | |
#include "net/pack_struct_start.h" | |
struct uip_udpip_hdr | |
{ | |
#if UIP_CONF_IPV6 != 0 | |
/* 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; | |
} | |
#include "net/pack_struct_end.h" | |
/* | |
* 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 != 0 | |
/* 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 != 0 | |
/** @{ */ | |
/** \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 != 0 | |
#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 != 0 | |
/** | |
* 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*/ | |
#ifdef UIP_FIXEDADDR | |
CCIF extern const uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr; | |
#else /* UIP_FIXEDADDR */ | |
CCIF extern uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr; | |
#endif /* UIP_FIXEDADDR */ | |
CCIF extern const uip_ipaddr_t uip_broadcast_addr; | |
CCIF extern const uip_ipaddr_t uip_all_zeroes_addr; | |
#ifdef UIP_FIXEDETHADDR | |
CCIF extern const uip_lladdr_t uip_lladdr; | |
#else | |
CCIF extern uip_lladdr_t uip_lladdr; | |
#endif | |
#if UIP_CONF_IPV6 != 0 | |
/** | |
* \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 | |
*/ | |
#ifdef 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__ */ | |
/** @} */ |