1 | /*
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2 | * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without modification,
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6 | * are permitted provided that the following conditions are met:
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7 | *
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8 | * 1. Redistributions of source code must retain the above copyright notice,
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9 | * this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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11 | * this list of conditions and the following disclaimer in the documentation
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12 | * and/or other materials provided with the distribution.
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13 | * 3. The name of the author may not be used to endorse or promote products
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14 | * derived from this software without specific prior written permission.
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15 | *
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16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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25 | * OF SUCH DAMAGE.
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26 | *
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27 | * This file is part of the lwIP TCP/IP stack.
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28 | *
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29 | * Author: Adam Dunkels <adam@sics.se>
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30 | *
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31 | */
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32 |
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33 | #include "lwip/opt.h"
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34 |
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35 | #include "lwip/netif.h"
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36 | #include "lwip/ip_addr.h"
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37 | #include "lwip/tcpip.h"
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38 | #include "../pcapif.h"
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39 | #include "examples/example_app/default_netif.h"
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40 |
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41 | static struct netif netif;
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42 |
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43 | #if LWIP_IPV4
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44 | #define NETIF_ADDRS ipaddr, netmask, gw,
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45 | void init_default_netif(const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw)
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46 | #else
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47 | #define NETIF_ADDRS
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48 | void init_default_netif(void)
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49 | #endif
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50 | {
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51 | #if NO_SYS
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52 | netif_add(&netif, NETIF_ADDRS NULL, pcapif_init, netif_input);
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53 | #else /* NO_SYS */
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54 | netif_add(&netif, NETIF_ADDRS NULL, pcapif_init, tcpip_input);
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55 | #endif /* NO_SYS */
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56 | netif_set_default(&netif);
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57 | }
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58 |
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59 | void
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60 | default_netif_poll(void)
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61 | {
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62 | #if !PCAPIF_RX_USE_THREAD
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63 | /* check for packets and link status*/
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64 | pcapif_poll(&netif);
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65 | /* When pcapif_poll comes back, there are not packets, so sleep to
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66 | prevent 100% CPU load. Don't do this in an embedded system since it
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67 | increases latency! */
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68 | sys_msleep(1);
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69 | #else /* !PCAPIF_RX_USE_THREAD */
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70 | sys_msleep(50);
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71 | #endif /* !PCAPIF_RX_USE_THREAD */
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72 | }
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73 |
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74 | void
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75 | default_netif_shutdown(void)
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76 | {
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77 | /* release the pcap library... */
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78 | pcapif_shutdown(&netif);
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79 | }
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