2 * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
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6 * are permitted provided that the following conditions are met:
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27 * This file is part of the lwIP TCP/IP stack.
29 * Author: Adam Dunkels <adam@sics.se>
37 #include "lwip/netif.h"
39 struct netif *netif_list = NULL;
40 struct netif *netif_default = NULL;
43 * Add a network interface to the list of lwIP netifs.
45 * @param ipaddr IP address for the new netif
46 * @param netmask network mask for the new netif
47 * @param gw default gateway IP address for the new netif
48 * @param state opaque data passed to the new netif
49 * @param init callback function that initializes the interface
50 * @param input callback function that...
52 * @return netif, or NULL if failed.
55 netif_add(struct ip_addr *ipaddr, struct ip_addr *netmask,
58 err_t (* init)(struct netif *netif),
59 err_t (* input)(struct pbuf *p, struct netif *netif))
62 static int netifnum = 0;
64 /* allocate netif structure */
65 netif = mem_malloc(sizeof(struct netif));
68 DEBUGF(NETIF_DEBUG, ("netif_add(): out of memory for netif\n"));
72 /* netif not under DHCP control by default */
75 /* remember netif specific state information data */
77 netif->num = netifnum++;
80 netif_set_addr(netif, ipaddr, netmask, gw);
82 /* call user specified initialization function for netif */
83 if (init(netif) != ERR_OK) {
88 /* add this netif to the list */
89 netif->next = netif_list;
92 DEBUGF(NETIF_DEBUG, ("netif: added interface %c%c IP addr ",
93 netif->name[0], netif->name[1]));
94 ip_addr_debug_print(ipaddr);
95 DEBUGF(NETIF_DEBUG, (" netmask "));
96 ip_addr_debug_print(netmask);
97 DEBUGF(NETIF_DEBUG, (" gw "));
98 ip_addr_debug_print(gw);
99 DEBUGF(NETIF_DEBUG, ("\n"));
100 #endif /* NETIF_DEBUG */
105 netif_set_addr(struct netif *netif,struct ip_addr *ipaddr, struct ip_addr *netmask,
108 netif_set_ipaddr(netif, ipaddr);
109 netif_set_netmask(netif, netmask);
110 netif_set_gw(netif, gw);
113 /*-----------------------------------------------------------------------------------*/
114 void netif_remove(struct netif * netif)
116 if ( netif == NULL ) return;
118 /* is it the first netif? */
119 if(netif_list == netif) {
120 netif_list = netif->next;
124 /* look for netif further down the list */
125 struct netif * tmpNetif;
126 for(tmpNetif = netif_list; tmpNetif != NULL; tmpNetif = tmpNetif->next) {
127 if(tmpNetif->next == netif) {
128 tmpNetif->next = netif->next;
133 return; /* we didn't find any netif today */
136 if(netif_default == netif)
137 netif_default = NULL;
139 DEBUGF(NETIF_DEBUG, ("netif_remove: removed netif"));
143 /*-----------------------------------------------------------------------------------*/
145 netif_find(char *name)
156 for(netif = netif_list; netif != NULL; netif = netif->next) {
157 if(num == netif->num &&
158 name[0] == netif->name[0] &&
159 name[1] == netif->name[1]) {
160 DEBUGF(NETIF_DEBUG, ("netif_find: found %s\n", name));
164 DEBUGF(NETIF_DEBUG, ("netif_find: didn't find %s\n", name));
167 /*-----------------------------------------------------------------------------------*/
169 netif_set_ipaddr(struct netif *netif, struct ip_addr *ipaddr)
171 ip_addr_set(&(netif->ip_addr), ipaddr);
172 DEBUGF(NETIF_DEBUG, ("netif: setting IP address of interface %c%c to %d.%d.%d.%d\n",
173 netif->name[0], netif->name[1],
174 (u8_t)(ntohl(ipaddr->addr) >> 24 & 0xff),
175 (u8_t)(ntohl(ipaddr->addr) >> 16 & 0xff),
176 (u8_t)(ntohl(ipaddr->addr) >> 8 & 0xff),
177 (u8_t)(ntohl(ipaddr->addr) & 0xff)));
179 /*-----------------------------------------------------------------------------------*/
181 netif_set_gw(struct netif *netif, struct ip_addr *gw)
183 ip_addr_set(&(netif->gw), gw);
185 /*-----------------------------------------------------------------------------------*/
187 netif_set_netmask(struct netif *netif, struct ip_addr *netmask)
189 ip_addr_set(&(netif->netmask), netmask);
191 /*-----------------------------------------------------------------------------------*/
193 netif_set_default(struct netif *netif)
195 netif_default = netif;
196 DEBUGF(NETIF_DEBUG, ("netif: setting default interface %c%c\n",
197 netif ? netif->name[0] : '\'', netif ? netif->name[1] : '\''));
199 /*-----------------------------------------------------------------------------------*/
203 netif_list = netif_default = NULL;
205 /*-----------------------------------------------------------------------------------*/