Contiki-NG
netstack.c
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1 /*
2  * Copyright (c) 2010, Swedish Institute of Computer Science.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the Institute nor the names of its contributors
14  * may be used to endorse or promote products derived from this software
15  * without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * This file is part of the Contiki operating system.
30  *
31  */
32 
33 /**
34  * \file
35  * Initialiation file for the Contiki low-layer network stack (NETSTACK)
36  * \author
37  * Adam Dunkels <adam@sics.se>
38  */
39 
40 #include "net/netstack.h"
41 #include "lib/list.h"
42 
43 /* The list of IP processors that will process IP packets before uip or after */
44 LIST(ip_processor_list);
45 
46 /* Note: localdest is only used for the output callback */
47 enum netstack_ip_action
48 netstack_process_ip_callback(uint8_t type, const linkaddr_t *localdest)
49 {
50  enum netstack_ip_action action = NETSTACK_IP_PROCESS;
51  struct netstack_ip_packet_processor *p;
52  for(p = list_head(ip_processor_list);
53  p != NULL;
54  p = list_item_next(p)) {
55  if(type == NETSTACK_IP_OUTPUT) {
56  if(p->process_output != NULL) {
57  action = p->process_output(localdest);
58  }
59  } else if(type == NETSTACK_IP_INPUT) {
60  if(p->process_input != NULL) {
61  action = p->process_input();
62  }
63  }
64  /* if not NETSTACK_IP_PROCESS - quit and return the desired action */
65  if(action != NETSTACK_IP_PROCESS)
66  return action;
67  }
68  return action;
69 }
70 /*---------------------------------------------------------------------------*/
71 void
72 netstack_ip_packet_processor_add(struct netstack_ip_packet_processor *p)
73 {
74  if(p != NULL) {
75  list_add(ip_processor_list, p);
76  }
77 }
78 /*---------------------------------------------------------------------------*/
79 void
80 uip_ds6_ip_packet_processor_rm(struct netstack_ip_packet_processor *p)
81  {
82  list_remove(ip_processor_list, p);
83 }
84 
85 /*---------------------------------------------------------------------------*/
86 void
87 netstack_init(void)
88 {
89  NETSTACK_RADIO.init();
90  NETSTACK_MAC.init();
91  NETSTACK_NETWORK.init();
92 }
93 /*---------------------------------------------------------------------------*/
Linked list manipulation routines.
void * list_head(list_t list)
Get a pointer to the first element of a list.
Definition: list.c:82
void list_add(list_t list, void *item)
Add an item at the end of a list.
Definition: list.c:142
#define LIST(name)
Declare a linked list.
Definition: list.h:89
void(* init)(void)
Initialize the MAC driver.
Definition: mac.h:66
Include file for the Contiki low-layer network stack (NETSTACK)
void list_remove(list_t list, void *item)
Remove a specific element from a list.
Definition: list.c:237
void * list_item_next(void *item)
Get the next item following this item.
Definition: list.c:322