1 /*
2 * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
25 * OF SUCH DAMAGE.
26 *
27 * This file is part of the lwIP TCP/IP stack.
28 *
29 * Author: Adam Dunkels <adam@sics.se>
30 *
31 */
32
33 #include "lwip/opt.h"
34
35 #include "lwip/netif.h"
36 #include "lwip/ip_addr.h"
37 #include "lwip/sys.h"
38 #include "lwip/tcpip.h"
39 #include "../pcapif.h"
40 #include "examples/example_app/default_netif.h"
41
42 static struct netif netif;
43
44 #if LWIP_IPV4
45 #define NETIF_ADDRS ipaddr, netmask, gw,
init_default_netif(const ip4_addr_t * ipaddr,const ip4_addr_t * netmask,const ip4_addr_t * gw)46 void init_default_netif(const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw)
47 #else
48 #define NETIF_ADDRS
49 void init_default_netif(void)
50 #endif
51 {
52 #if NO_SYS
53 netif_add(&netif, NETIF_ADDRS NULL, pcapif_init, netif_input);
54 #else /* NO_SYS */
55 netif_add(&netif, NETIF_ADDRS NULL, pcapif_init, tcpip_input);
56 #endif /* NO_SYS */
57 netif_set_default(&netif);
58 }
59
60 void
default_netif_poll(void)61 default_netif_poll(void)
62 {
63 #if !PCAPIF_RX_USE_THREAD
64 /* check for packets and link status*/
65 pcapif_poll(&netif);
66 /* When pcapif_poll comes back, there are not packets, so sleep to
67 prevent 100% CPU load. Don't do this in an embedded system since it
68 increases latency! */
69 sys_msleep(1);
70 #else /* !PCAPIF_RX_USE_THREAD */
71 sys_msleep(50);
72 #endif /* !PCAPIF_RX_USE_THREAD */
73 }
74
75 void
default_netif_shutdown(void)76 default_netif_shutdown(void)
77 {
78 /* release the pcap library... */
79 pcapif_shutdown(&netif);
80 }
81