This source file includes following definitions.
- init_etherdev
- eth_mac_addr
- ether_setup
- tr_setup
- ether_config
- register_netdev
- unregister_netdev
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25 #include <linux/config.h>
26 #include <linux/kernel.h>
27 #include <linux/sched.h>
28 #include <linux/types.h>
29 #include <linux/fs.h>
30 #include <linux/malloc.h>
31 #include <linux/if_ether.h>
32 #include <linux/if_arp.h>
33 #include <linux/string.h>
34 #include <linux/netdevice.h>
35 #include <linux/etherdevice.h>
36 #include <linux/trdevice.h>
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56 #define MAX_ETH_CARDS 16
57 static struct device *ethdev_index[MAX_ETH_CARDS];
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70 struct device *
71 init_etherdev(struct device *dev, int sizeof_priv)
72 {
73 int new_device = 0;
74 int i;
75
76
77 if (dev == NULL) {
78 int alloc_size = sizeof(struct device) + sizeof("eth%d ")
79 + sizeof_priv + 3;
80 struct device *cur_dev;
81 char pname[8];
82
83 for (i = 0; i < MAX_ETH_CARDS; ++i)
84 if (ethdev_index[i] == NULL) {
85 sprintf(pname, "eth%d", i);
86 for (cur_dev = dev_base; cur_dev; cur_dev = cur_dev->next)
87 if (strcmp(pname, cur_dev->name) == 0) {
88 dev = cur_dev;
89 dev->init = NULL;
90 sizeof_priv = (sizeof_priv + 3) & ~3;
91 dev->priv = sizeof_priv
92 ? kmalloc(sizeof_priv, GFP_KERNEL)
93 : NULL;
94 if (dev->priv) memset(dev->priv, 0, sizeof_priv);
95 goto found;
96 }
97 }
98
99 alloc_size &= ~3;
100
101 dev = (struct device *)kmalloc(alloc_size, GFP_KERNEL);
102 memset(dev, 0, alloc_size);
103 if (sizeof_priv)
104 dev->priv = (void *) (dev + 1);
105 dev->name = sizeof_priv + (char *)(dev + 1);
106 new_device = 1;
107 }
108
109 found:
110
111 if (dev->name &&
112 ((dev->name[0] == '\0') || (dev->name[0] == ' '))) {
113 for (i = 0; i < MAX_ETH_CARDS; ++i)
114 if (ethdev_index[i] == NULL) {
115 sprintf(dev->name, "eth%d", i);
116 ethdev_index[i] = dev;
117 break;
118 }
119 }
120
121 ether_setup(dev);
122
123 if (new_device) {
124
125 struct device **old_devp = &dev_base;
126 while ((*old_devp)->next)
127 old_devp = & (*old_devp)->next;
128 (*old_devp)->next = dev;
129 dev->next = 0;
130 }
131 return dev;
132 }
133
134
135 static int eth_mac_addr(struct device *dev, struct sockaddr *addr)
136 {
137 if(dev->start)
138 return -EBUSY;
139 memcpy(dev->dev_addr, addr->sa_data,dev->addr_len);
140 return 0;
141 }
142
143 void ether_setup(struct device *dev)
144 {
145 int i;
146
147
148 for (i = 0; i < DEV_NUMBUFFS; i++)
149 skb_queue_head_init(&dev->buffs[i]);
150
151
152 if (dev->name && (strncmp(dev->name, "eth", 3) == 0)) {
153 i = simple_strtoul(dev->name + 3, NULL, 0);
154 if (ethdev_index[i] == NULL) {
155 ethdev_index[i] = dev;
156 }
157 else if (dev != ethdev_index[i]) {
158
159 printk("ether_setup: Ouch! Someone else took %s\n",
160 dev->name);
161 }
162 }
163
164 dev->hard_header = eth_header;
165 dev->rebuild_header = eth_rebuild_header;
166 dev->set_mac_address = eth_mac_addr;
167 dev->header_cache = eth_header_cache;
168
169 dev->type = ARPHRD_ETHER;
170 dev->hard_header_len = ETH_HLEN;
171 dev->mtu = 1500;
172 dev->addr_len = ETH_ALEN;
173 for (i = 0; i < ETH_ALEN; i++) {
174 dev->broadcast[i]=0xff;
175 }
176
177
178 dev->flags = IFF_BROADCAST|IFF_MULTICAST;
179 dev->family = AF_INET;
180 dev->pa_addr = 0;
181 dev->pa_brdaddr = 0;
182 dev->pa_mask = 0;
183 dev->pa_alen = 4;
184 }
185
186 #ifdef CONFIG_TR
187
188 void tr_setup(struct device *dev)
189 {
190 int i;
191
192
193 for (i = 0; i < DEV_NUMBUFFS; i++)
194 skb_queue_head_init(&dev->buffs[i]);
195
196 dev->hard_header = tr_header;
197 dev->rebuild_header = tr_rebuild_header;
198
199 dev->type = ARPHRD_IEEE802;
200 dev->hard_header_len = TR_HLEN;
201 dev->mtu = 2000;
202 dev->addr_len = TR_ALEN;
203 for (i = 0; i < TR_ALEN; i++) {
204 dev->broadcast[i]=0xff;
205 }
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207
208 dev->flags = IFF_BROADCAST;
209 dev->family = AF_INET;
210 dev->pa_addr = 0;
211 dev->pa_brdaddr = 0;
212 dev->pa_mask = 0;
213 dev->pa_alen = 4;
214 }
215
216 #endif
217
218 int ether_config(struct device *dev, struct ifmap *map)
219 {
220 if (map->mem_start != (u_long)(-1))
221 dev->mem_start = map->mem_start;
222 if (map->mem_end != (u_long)(-1))
223 dev->mem_end = map->mem_end;
224 if (map->base_addr != (u_short)(-1))
225 dev->base_addr = map->base_addr;
226 if (map->irq != (u_char)(-1))
227 dev->irq = map->irq;
228 if (map->dma != (u_char)(-1))
229 dev->dma = map->dma;
230 if (map->port != (u_char)(-1))
231 dev->if_port = map->port;
232 return 0;
233 }
234
235 int register_netdev(struct device *dev)
236 {
237 struct device *d = dev_base;
238 unsigned long flags;
239 int i=MAX_ETH_CARDS;
240
241 save_flags(flags);
242 cli();
243
244 if (dev && dev->init) {
245 if (dev->name &&
246 ((dev->name[0] == '\0') || (dev->name[0] == ' '))) {
247 for (i = 0; i < MAX_ETH_CARDS; ++i)
248 if (ethdev_index[i] == NULL) {
249 sprintf(dev->name, "eth%d", i);
250 printk("loading device '%s'...\n", dev->name);
251 ethdev_index[i] = dev;
252 break;
253 }
254 }
255
256 if (dev->init(dev) != 0) {
257 if (i < MAX_ETH_CARDS) ethdev_index[i] = NULL;
258 restore_flags(flags);
259 return -EIO;
260 }
261
262
263 if (dev_base) {
264 while (d->next)
265 d = d->next;
266 d->next = dev;
267 }
268 else
269 dev_base = dev;
270 dev->next = NULL;
271 }
272 restore_flags(flags);
273 return 0;
274 }
275
276 void unregister_netdev(struct device *dev)
277 {
278 struct device *d = dev_base;
279 unsigned long flags;
280 int i;
281
282 save_flags(flags);
283 cli();
284
285 if (dev == NULL)
286 {
287 printk("was NULL\n");
288 restore_flags(flags);
289 return;
290 }
291
292 if (dev->start)
293 printk("ERROR '%s' busy and not MOD_IN_USE.\n", dev->name);
294 if (dev_base == dev)
295 dev_base = dev->next;
296 else
297 {
298 while (d && (d->next != dev))
299 d = d->next;
300
301 if (d && (d->next == dev))
302 {
303 d->next = dev->next;
304 }
305 else
306 {
307 printk("unregister_netdev: '%s' not found\n", dev->name);
308 restore_flags(flags);
309 return;
310 }
311 }
312 for (i = 0; i < MAX_ETH_CARDS; ++i)
313 {
314 if (ethdev_index[i] == dev)
315 {
316 ethdev_index[i] = NULL;
317 break;
318 }
319 }
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327 dev_close(dev);
328
329 restore_flags(flags);
330 }
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