Pehr Hovey / Mbed 2 deprecated UDPtest

Some quick code to use UDP-only (no TCP) with mBed. Echos received packets and sends packets when a button is pressed

Dependencies:   mbed

Core/lwIP/include/lwip/netif.h@0:a548a085de55, 2010-03-14 (annotated)

Committer:
pehrhovey
Date:
Sun Mar 14 00:54:12 2010 +0000
Revision:
0:a548a085de55

        

        
Who changed what in which revision?

        

            
                
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/*





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 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.





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 * All rights reserved. 





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 * 





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 * Redistribution and use in source and binary forms, with or without modification, 





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 * are permitted provided that the following conditions are met:





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 *





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 * 1. Redistributions of source code must retain the above copyright notice,





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 *    this list of conditions and the following disclaimer.





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 * 2. Redistributions in binary form must reproduce the above copyright notice,





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 *    this list of conditions and the following disclaimer in the documentation





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 *    and/or other materials provided with the distribution.





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 * 3. The name of the author may not be used to endorse or promote products





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 *    derived from this software without specific prior written permission. 





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 *





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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 





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 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 





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 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 





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 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 





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 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 





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 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 





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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 





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 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 





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 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 





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 * OF SUCH DAMAGE.





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 *





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 * This file is part of the lwIP TCP/IP stack.





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 * 





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 * Author: Adam Dunkels <adam@sics.se>





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 *





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 */





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#ifndef __LWIP_NETIF_H__





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#define __LWIP_NETIF_H__





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#include "lwip/opt.h"





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#define ENABLE_LOOPBACK (LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF)





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#include "lwip/err.h"





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#include "lwip/ip_addr.h"





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#include "lwip/inet.h"





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#include "lwip/pbuf.h"





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#if LWIP_DHCP





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struct dhcp;





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#endif





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#if LWIP_AUTOIP





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struct autoip;





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#endif





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#ifdef __cplusplus





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extern "C" {





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#endif





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/* Throughout this file, IP addresses are expected to be in





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 * the same byte order as in IP_PCB. */





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/** must be the maximum of all used hardware address lengths





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    across all types of interfaces in use */





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#define NETIF_MAX_HWADDR_LEN 6U





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/** TODO: define the use (where, when, whom) of netif flags */





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/** whether the network interface is 'up'. this is





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 * a software flag used to control whether this network





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 * interface is enabled and processes traffic.





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 */





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#define NETIF_FLAG_UP           0x01U





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/** if set, the netif has broadcast capability */





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#define NETIF_FLAG_BROADCAST    0x02U





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/** if set, the netif is one end of a point-to-point connection */





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#define NETIF_FLAG_POINTTOPOINT 0x04U





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/** if set, the interface is configured using DHCP */





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#define NETIF_FLAG_DHCP         0x08U





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/** if set, the interface has an active link





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 *  (set by the network interface driver) */





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#define NETIF_FLAG_LINK_UP      0x10U





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/** if set, the netif is an device using ARP */





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#define NETIF_FLAG_ETHARP       0x20U





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/** if set, the netif has IGMP capability */





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#define NETIF_FLAG_IGMP         0x40U





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/** Generic data structure used for all lwIP network interfaces.





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 *  The following fields should be filled in by the initialization





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 *  function for the device driver: hwaddr_len, hwaddr[], mtu, flags */





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struct netif {





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  /** pointer to next in linked list */





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  struct netif *next;





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  /** IP address configuration in network byte order */





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  struct ip_addr ip_addr;





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  struct ip_addr netmask;





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  struct ip_addr gw;





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  /** This function is called by the network device driver





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   *  to pass a packet up the TCP/IP stack. */





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  err_t (* input)(struct pbuf *p, struct netif *inp);





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  /** This function is called by the IP module when it wants





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   *  to send a packet on the interface. This function typically





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   *  first resolves the hardware address, then sends the packet. */





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  err_t (* output)(struct netif *netif, struct pbuf *p,





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       struct ip_addr *ipaddr);





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  /** This function is called by the ARP module when it wants





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   *  to send a packet on the interface. This function outputs





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   *  the pbuf as-is on the link medium. */





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  err_t (* linkoutput)(struct netif *netif, struct pbuf *p);





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#if LWIP_NETIF_STATUS_CALLBACK





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  /** This function is called when the netif state is set to up or down





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   */





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  void (* status_callback)(struct netif *netif);





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#endif /* LWIP_NETIF_STATUS_CALLBACK */





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#if LWIP_NETIF_LINK_CALLBACK





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  /** This function is called when the netif link is set to up or down





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   */





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  void (* link_callback)(struct netif *netif);





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#endif /* LWIP_NETIF_LINK_CALLBACK */





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  /** This field can be set by the device driver and could point





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   *  to state information for the device. */





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  void *state;





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#if LWIP_DHCP





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  /** the DHCP client state information for this netif */





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  struct dhcp *dhcp;





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#endif /* LWIP_DHCP */





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#if LWIP_AUTOIP





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  /** the AutoIP client state information for this netif */





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  struct autoip *autoip;





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#endif





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#if LWIP_NETIF_HOSTNAME





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  /* the hostname for this netif, NULL is a valid value */





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  char*  hostname;





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#endif /* LWIP_NETIF_HOSTNAME */





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  /** number of bytes used in hwaddr */





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  u8_t hwaddr_len;





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  /** link level hardware address of this interface */





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  u8_t hwaddr[NETIF_MAX_HWADDR_LEN];





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  /** maximum transfer unit (in bytes) */





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  u16_t mtu;





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  /** flags (see NETIF_FLAG_ above) */





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  u8_t flags;





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  /** descriptive abbreviation */





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  char name[2];





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  /** number of this interface */





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  u8_t num;





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#if LWIP_SNMP





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  /** link type (from "snmp_ifType" enum from snmp.h) */





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  u8_t link_type;





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  /** (estimate) link speed */





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  u32_t link_speed;





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  /** timestamp at last change made (up/down) */





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  u32_t ts;





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  /** counters */





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  u32_t ifinoctets;





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  u32_t ifinucastpkts;





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  u32_t ifinnucastpkts;





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  u32_t ifindiscards;





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  u32_t ifoutoctets;





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  u32_t ifoutucastpkts;





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  u32_t ifoutnucastpkts;





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  u32_t ifoutdiscards;





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#endif /* LWIP_SNMP */





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#if LWIP_IGMP





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  /* This function could be called to add or delete a entry in the multicast filter table of the ethernet MAC.*/





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  err_t (*igmp_mac_filter)( struct netif *netif, struct ip_addr *group, u8_t action);





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#endif /* LWIP_IGMP */





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#if LWIP_NETIF_HWADDRHINT





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  u8_t *addr_hint;





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#endif /* LWIP_NETIF_HWADDRHINT */





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#if ENABLE_LOOPBACK





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  /* List of packets to be queued for ourselves. */





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  struct pbuf *loop_first;





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  struct pbuf *loop_last;





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#if LWIP_LOOPBACK_MAX_PBUFS





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  u16_t loop_cnt_current;





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#endif /* LWIP_LOOPBACK_MAX_PBUFS */





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#endif /* ENABLE_LOOPBACK */





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};





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#if LWIP_SNMP





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#define NETIF_INIT_SNMP(netif, type, speed) \





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  /* use "snmp_ifType" enum from snmp.h for "type", snmp_ifType_ethernet_csmacd by example */ \





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  netif->link_type = type;    \





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  /* your link speed here (units: bits per second) */  \





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  netif->link_speed = speed;  \





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  netif->ts = 0;              \





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  netif->ifinoctets = 0;      \





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  netif->ifinucastpkts = 0;   \





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  netif->ifinnucastpkts = 0;  \





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  netif->ifindiscards = 0;    \





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  netif->ifoutoctets = 0;     \





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  netif->ifoutucastpkts = 0;  \





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  netif->ifoutnucastpkts = 0; \





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  netif->ifoutdiscards = 0





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#else /* LWIP_SNMP */





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#define NETIF_INIT_SNMP(netif, type, speed)





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#endif /* LWIP_SNMP */





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/** The list of network interfaces. */





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extern struct netif *netif_list;





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/** The default network interface. */





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extern struct netif *netif_default;





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#define netif_init() /* Compatibility define, not init needed. */





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struct netif *netif_add(struct netif *netif, struct ip_addr *ipaddr, struct ip_addr *netmask,





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      struct ip_addr *gw,





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      void *state,





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      err_t (* init)(struct netif *netif),





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      err_t (* input)(struct pbuf *p, struct netif *netif));





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void





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netif_set_addr(struct netif *netif,struct ip_addr *ipaddr, struct ip_addr *netmask,





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    struct ip_addr *gw);





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void netif_remove(struct netif * netif);





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/* Returns a network interface given its name. The name is of the form





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   "et0", where the first two letters are the "name" field in the





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   netif structure, and the digit is in the num field in the same





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   structure. */





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struct netif *netif_find(char *name);





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void netif_set_default(struct netif *netif);





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void netif_set_ipaddr(struct netif *netif, struct ip_addr *ipaddr);





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void netif_set_netmask(struct netif *netif, struct ip_addr *netmask);





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void netif_set_gw(struct netif *netif, struct ip_addr *gw);





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void netif_set_up(struct netif *netif);





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void netif_set_down(struct netif *netif);





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u8_t netif_is_up(struct netif *netif);





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#if LWIP_NETIF_STATUS_CALLBACK





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/*





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 * Set callback to be called when interface is brought up/down





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 */





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void netif_set_status_callback(struct netif *netif, void (* status_callback)(struct netif *netif));





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#endif /* LWIP_NETIF_STATUS_CALLBACK */





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#if LWIP_NETIF_LINK_CALLBACK





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void netif_set_link_up(struct netif *netif);





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void netif_set_link_down(struct netif *netif);





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u8_t netif_is_link_up(struct netif *netif);





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/*





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 * Set callback to be called when link is brought up/down





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 */





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void netif_set_link_callback(struct netif *netif, void (* link_callback)(struct netif *netif));





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#endif /* LWIP_NETIF_LINK_CALLBACK */





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#ifdef __cplusplus





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}





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#endif





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#if ENABLE_LOOPBACK





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err_t netif_loop_output(struct netif *netif, struct pbuf *p, struct ip_addr *dest_ip);





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void netif_poll(struct netif *netif);





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#if !LWIP_NETIF_LOOPBACK_MULTITHREADING





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void netif_poll_all(void);





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#endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */





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#endif /* ENABLE_LOOPBACK */





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#endif /* __LWIP_NETIF_H__ */