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1da177e4 LT |
1 | /* $Id: isdn_net.c,v 1.1.2.2 2004/01/12 22:37:19 keil Exp $ |
2 | * | |
3 | * Linux ISDN subsystem, network interfaces and related functions (linklevel). | |
4 | * | |
5 | * Copyright 1994-1998 by Fritz Elfert (fritz@isdn4linux.de) | |
6 | * Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg | |
7 | * Copyright 1995,96 by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de) | |
8 | * | |
9 | * This software may be used and distributed according to the terms | |
10 | * of the GNU General Public License, incorporated herein by reference. | |
11 | * | |
12 | * Data Over Voice (DOV) support added - Guy Ellis 23-Mar-02 | |
13 | * guy@traverse.com.au | |
14 | * Outgoing calls - looks for a 'V' in first char of dialed number | |
15 | * Incoming calls - checks first character of eaz as follows: | |
16 | * Numeric - accept DATA only - original functionality | |
17 | * 'V' - accept VOICE (DOV) only | |
18 | * 'B' - accept BOTH DATA and DOV types | |
19 | * | |
20 | * Jan 2001: fix CISCO HDLC Bjoern A. Zeeb <i4l@zabbadoz.net> | |
21 | * for info on the protocol, see | |
22 | * http://i4l.zabbadoz.net/i4l/cisco-hdlc.txt | |
23 | */ | |
24 | ||
1da177e4 LT |
25 | #include <linux/isdn.h> |
26 | #include <net/arp.h> | |
27 | #include <net/dst.h> | |
28 | #include <net/pkt_sched.h> | |
29 | #include <linux/inetdevice.h> | |
30 | #include "isdn_common.h" | |
31 | #include "isdn_net.h" | |
32 | #ifdef CONFIG_ISDN_PPP | |
33 | #include "isdn_ppp.h" | |
34 | #endif | |
35 | #ifdef CONFIG_ISDN_X25 | |
36 | #include <linux/concap.h> | |
37 | #include "isdn_concap.h" | |
38 | #endif | |
39 | ||
40 | ||
41 | /* | |
42 | * Outline of new tbusy handling: | |
43 | * | |
44 | * Old method, roughly spoken, consisted of setting tbusy when entering | |
45 | * isdn_net_start_xmit() and at several other locations and clearing | |
46 | * it from isdn_net_start_xmit() thread when sending was successful. | |
47 | * | |
48 | * With 2.3.x multithreaded network core, to prevent problems, tbusy should | |
49 | * only be set by the isdn_net_start_xmit() thread and only when a tx-busy | |
50 | * condition is detected. Other threads (in particular isdn_net_stat_callb()) | |
51 | * are only allowed to clear tbusy. | |
52 | * | |
53 | * -HE | |
54 | */ | |
55 | ||
56 | /* | |
57 | * About SOFTNET: | |
58 | * Most of the changes were pretty obvious and basically done by HE already. | |
59 | * | |
60 | * One problem of the isdn net device code is that is uses struct net_device | |
61 | * for masters and slaves. However, only master interface are registered to | |
62 | * the network layer, and therefore, it only makes sense to call netif_* | |
63 | * functions on them. | |
64 | * | |
65 | * --KG | |
66 | */ | |
67 | ||
68 | /* | |
69 | * Find out if the netdevice has been ifup-ed yet. | |
70 | * For slaves, look at the corresponding master. | |
71 | */ | |
72 | static __inline__ int isdn_net_device_started(isdn_net_dev *n) | |
73 | { | |
74 | isdn_net_local *lp = n->local; | |
75 | struct net_device *dev; | |
76 | ||
77 | if (lp->master) | |
78 | dev = lp->master; | |
79 | else | |
d62a38d1 | 80 | dev = n->dev; |
1da177e4 LT |
81 | return netif_running(dev); |
82 | } | |
83 | ||
84 | /* | |
85 | * wake up the network -> net_device queue. | |
86 | * For slaves, wake the corresponding master interface. | |
87 | */ | |
88 | static __inline__ void isdn_net_device_wake_queue(isdn_net_local *lp) | |
89 | { | |
90 | if (lp->master) | |
91 | netif_wake_queue(lp->master); | |
92 | else | |
d62a38d1 | 93 | netif_wake_queue(lp->netdev->dev); |
1da177e4 LT |
94 | } |
95 | ||
96 | /* | |
97 | * stop the network -> net_device queue. | |
98 | * For slaves, stop the corresponding master interface. | |
99 | */ | |
100 | static __inline__ void isdn_net_device_stop_queue(isdn_net_local *lp) | |
101 | { | |
102 | if (lp->master) | |
103 | netif_stop_queue(lp->master); | |
104 | else | |
d62a38d1 | 105 | netif_stop_queue(lp->netdev->dev); |
1da177e4 LT |
106 | } |
107 | ||
108 | /* | |
109 | * find out if the net_device which this lp belongs to (lp can be | |
110 | * master or slave) is busy. It's busy iff all (master and slave) | |
111 | * queues are busy | |
112 | */ | |
113 | static __inline__ int isdn_net_device_busy(isdn_net_local *lp) | |
114 | { | |
115 | isdn_net_local *nlp; | |
116 | isdn_net_dev *nd; | |
117 | unsigned long flags; | |
118 | ||
119 | if (!isdn_net_lp_busy(lp)) | |
120 | return 0; | |
121 | ||
122 | if (lp->master) | |
838361fe | 123 | nd = ISDN_MASTER_PRIV(lp)->netdev; |
1da177e4 LT |
124 | else |
125 | nd = lp->netdev; | |
126 | ||
127 | spin_lock_irqsave(&nd->queue_lock, flags); | |
128 | nlp = lp->next; | |
129 | while (nlp != lp) { | |
130 | if (!isdn_net_lp_busy(nlp)) { | |
131 | spin_unlock_irqrestore(&nd->queue_lock, flags); | |
132 | return 0; | |
133 | } | |
134 | nlp = nlp->next; | |
135 | } | |
136 | spin_unlock_irqrestore(&nd->queue_lock, flags); | |
137 | return 1; | |
138 | } | |
139 | ||
140 | static __inline__ void isdn_net_inc_frame_cnt(isdn_net_local *lp) | |
141 | { | |
142 | atomic_inc(&lp->frame_cnt); | |
143 | if (isdn_net_device_busy(lp)) | |
144 | isdn_net_device_stop_queue(lp); | |
145 | } | |
146 | ||
147 | static __inline__ void isdn_net_dec_frame_cnt(isdn_net_local *lp) | |
148 | { | |
149 | atomic_dec(&lp->frame_cnt); | |
150 | ||
151 | if (!(isdn_net_device_busy(lp))) { | |
152 | if (!skb_queue_empty(&lp->super_tx_queue)) { | |
153 | schedule_work(&lp->tqueue); | |
154 | } else { | |
155 | isdn_net_device_wake_queue(lp); | |
156 | } | |
157 | } | |
158 | } | |
159 | ||
160 | static __inline__ void isdn_net_zero_frame_cnt(isdn_net_local *lp) | |
161 | { | |
162 | atomic_set(&lp->frame_cnt, 0); | |
163 | } | |
164 | ||
165 | /* For 2.2.x we leave the transmitter busy timeout at 2 secs, just | |
166 | * to be safe. | |
167 | * For 2.3.x we push it up to 20 secs, because call establishment | |
168 | * (in particular callback) may take such a long time, and we | |
169 | * don't want confusing messages in the log. However, there is a slight | |
170 | * possibility that this large timeout will break other things like MPPP, | |
171 | * which might rely on the tx timeout. If so, we'll find out this way... | |
172 | */ | |
173 | ||
174 | #define ISDN_NET_TX_TIMEOUT (20*HZ) | |
175 | ||
176 | /* Prototypes */ | |
177 | ||
3e206b0a | 178 | static int isdn_net_force_dial_lp(isdn_net_local *); |
1da177e4 LT |
179 | static int isdn_net_start_xmit(struct sk_buff *, struct net_device *); |
180 | ||
181 | static void isdn_net_ciscohdlck_connected(isdn_net_local *lp); | |
182 | static void isdn_net_ciscohdlck_disconnected(isdn_net_local *lp); | |
183 | ||
184 | char *isdn_net_revision = "$Revision: 1.1.2.2 $"; | |
185 | ||
186 | /* | |
187 | * Code for raw-networking over ISDN | |
188 | */ | |
189 | ||
190 | static void | |
191 | isdn_net_unreachable(struct net_device *dev, struct sk_buff *skb, char *reason) | |
192 | { | |
193 | if(skb) { | |
194 | ||
195 | u_short proto = ntohs(skb->protocol); | |
196 | ||
197 | printk(KERN_DEBUG "isdn_net: %s: %s, signalling dst_link_failure %s\n", | |
198 | dev->name, | |
199 | (reason != NULL) ? reason : "unknown", | |
200 | (proto != ETH_P_IP) ? "Protocol != ETH_P_IP" : ""); | |
201 | ||
202 | dst_link_failure(skb); | |
203 | } | |
204 | else { /* dial not triggered by rawIP packet */ | |
205 | printk(KERN_DEBUG "isdn_net: %s: %s\n", | |
206 | dev->name, | |
207 | (reason != NULL) ? reason : "reason unknown"); | |
208 | } | |
209 | } | |
210 | ||
211 | static void | |
212 | isdn_net_reset(struct net_device *dev) | |
213 | { | |
214 | #ifdef CONFIG_ISDN_X25 | |
215 | struct concap_device_ops * dops = | |
838361fe | 216 | ((isdn_net_local *) netdev_priv(dev))->dops; |
1da177e4 | 217 | struct concap_proto * cprot = |
838361fe | 218 | ((isdn_net_local *) netdev_priv(dev))->netdev->cprot; |
1da177e4 LT |
219 | #endif |
220 | #ifdef CONFIG_ISDN_X25 | |
221 | if( cprot && cprot -> pops && dops ) | |
222 | cprot -> pops -> restart ( cprot, dev, dops ); | |
223 | #endif | |
224 | } | |
225 | ||
226 | /* Open/initialize the board. */ | |
227 | static int | |
228 | isdn_net_open(struct net_device *dev) | |
229 | { | |
230 | int i; | |
231 | struct net_device *p; | |
232 | struct in_device *in_dev; | |
233 | ||
234 | /* moved here from isdn_net_reset, because only the master has an | |
235 | interface associated which is supposed to be started. BTW: | |
236 | we need to call netif_start_queue, not netif_wake_queue here */ | |
237 | netif_start_queue(dev); | |
238 | ||
239 | isdn_net_reset(dev); | |
240 | /* Fill in the MAC-level header (not needed, but for compatibility... */ | |
241 | for (i = 0; i < ETH_ALEN - sizeof(u32); i++) | |
242 | dev->dev_addr[i] = 0xfc; | |
243 | if ((in_dev = dev->ip_ptr) != NULL) { | |
244 | /* | |
245 | * Any address will do - we take the first | |
246 | */ | |
247 | struct in_ifaddr *ifa = in_dev->ifa_list; | |
248 | if (ifa != NULL) | |
249 | memcpy(dev->dev_addr+2, &ifa->ifa_local, 4); | |
250 | } | |
251 | ||
252 | /* If this interface has slaves, start them also */ | |
838361fe WC |
253 | p = MASTER_TO_SLAVE(dev); |
254 | if (p) { | |
1da177e4 LT |
255 | while (p) { |
256 | isdn_net_reset(p); | |
838361fe | 257 | p = MASTER_TO_SLAVE(p); |
1da177e4 LT |
258 | } |
259 | } | |
260 | isdn_lock_drivers(); | |
261 | return 0; | |
262 | } | |
263 | ||
264 | /* | |
265 | * Assign an ISDN-channel to a net-interface | |
266 | */ | |
267 | static void | |
268 | isdn_net_bind_channel(isdn_net_local * lp, int idx) | |
269 | { | |
270 | lp->flags |= ISDN_NET_CONNECTED; | |
271 | lp->isdn_device = dev->drvmap[idx]; | |
272 | lp->isdn_channel = dev->chanmap[idx]; | |
273 | dev->rx_netdev[idx] = lp->netdev; | |
274 | dev->st_netdev[idx] = lp->netdev; | |
275 | } | |
276 | ||
277 | /* | |
278 | * unbind a net-interface (resets interface after an error) | |
279 | */ | |
280 | static void | |
281 | isdn_net_unbind_channel(isdn_net_local * lp) | |
282 | { | |
283 | skb_queue_purge(&lp->super_tx_queue); | |
284 | ||
285 | if (!lp->master) { /* reset only master device */ | |
286 | /* Moral equivalent of dev_purge_queues(): | |
287 | BEWARE! This chunk of code cannot be called from hardware | |
288 | interrupt handler. I hope it is true. --ANK | |
289 | */ | |
5aa70995 | 290 | qdisc_reset_all_tx(lp->netdev->dev); |
1da177e4 LT |
291 | } |
292 | lp->dialstate = 0; | |
293 | dev->rx_netdev[isdn_dc2minor(lp->isdn_device, lp->isdn_channel)] = NULL; | |
294 | dev->st_netdev[isdn_dc2minor(lp->isdn_device, lp->isdn_channel)] = NULL; | |
bae58431 PB |
295 | if (lp->isdn_device != -1 && lp->isdn_channel != -1) |
296 | isdn_free_channel(lp->isdn_device, lp->isdn_channel, | |
297 | ISDN_USAGE_NET); | |
1da177e4 LT |
298 | lp->flags &= ~ISDN_NET_CONNECTED; |
299 | lp->isdn_device = -1; | |
300 | lp->isdn_channel = -1; | |
301 | } | |
302 | ||
303 | /* | |
304 | * Perform auto-hangup and cps-calculation for net-interfaces. | |
305 | * | |
306 | * auto-hangup: | |
307 | * Increment idle-counter (this counter is reset on any incoming or | |
308 | * outgoing packet), if counter exceeds configured limit either do a | |
309 | * hangup immediately or - if configured - wait until just before the next | |
310 | * charge-info. | |
311 | * | |
312 | * cps-calculation (needed for dynamic channel-bundling): | |
313 | * Since this function is called every second, simply reset the | |
314 | * byte-counter of the interface after copying it to the cps-variable. | |
315 | */ | |
3e206b0a | 316 | static unsigned long last_jiffies = -HZ; |
1da177e4 LT |
317 | |
318 | void | |
319 | isdn_net_autohup(void) | |
320 | { | |
321 | isdn_net_dev *p = dev->netdev; | |
322 | int anymore; | |
323 | ||
324 | anymore = 0; | |
325 | while (p) { | |
326 | isdn_net_local *l = p->local; | |
327 | if (jiffies == last_jiffies) | |
328 | l->cps = l->transcount; | |
329 | else | |
330 | l->cps = (l->transcount * HZ) / (jiffies - last_jiffies); | |
331 | l->transcount = 0; | |
332 | if (dev->net_verbose > 3) | |
faca94ff | 333 | printk(KERN_DEBUG "%s: %d bogocps\n", p->dev->name, l->cps); |
1da177e4 LT |
334 | if ((l->flags & ISDN_NET_CONNECTED) && (!l->dialstate)) { |
335 | anymore = 1; | |
336 | l->huptimer++; | |
337 | /* | |
338 | * if there is some dialmode where timeout-hangup | |
339 | * should _not_ be done, check for that here | |
340 | */ | |
341 | if ((l->onhtime) && | |
342 | (l->huptimer > l->onhtime)) | |
343 | { | |
344 | if (l->hupflags & ISDN_MANCHARGE && | |
345 | l->hupflags & ISDN_CHARGEHUP) { | |
346 | while (time_after(jiffies, l->chargetime + l->chargeint)) | |
347 | l->chargetime += l->chargeint; | |
348 | if (time_after(jiffies, l->chargetime + l->chargeint - 2 * HZ)) | |
349 | if (l->outgoing || l->hupflags & ISDN_INHUP) | |
d62a38d1 | 350 | isdn_net_hangup(p->dev); |
1da177e4 LT |
351 | } else if (l->outgoing) { |
352 | if (l->hupflags & ISDN_CHARGEHUP) { | |
353 | if (l->hupflags & ISDN_WAITCHARGE) { | |
354 | printk(KERN_DEBUG "isdn_net: Hupflags of %s are %X\n", | |
faca94ff | 355 | p->dev->name, l->hupflags); |
d62a38d1 | 356 | isdn_net_hangup(p->dev); |
1da177e4 LT |
357 | } else if (time_after(jiffies, l->chargetime + l->chargeint)) { |
358 | printk(KERN_DEBUG | |
359 | "isdn_net: %s: chtime = %lu, chint = %d\n", | |
faca94ff | 360 | p->dev->name, l->chargetime, l->chargeint); |
d62a38d1 | 361 | isdn_net_hangup(p->dev); |
1da177e4 LT |
362 | } |
363 | } else | |
d62a38d1 | 364 | isdn_net_hangup(p->dev); |
1da177e4 | 365 | } else if (l->hupflags & ISDN_INHUP) |
d62a38d1 | 366 | isdn_net_hangup(p->dev); |
1da177e4 LT |
367 | } |
368 | ||
369 | if(dev->global_flags & ISDN_GLOBAL_STOPPED || (ISDN_NET_DIALMODE(*l) == ISDN_NET_DM_OFF)) { | |
d62a38d1 | 370 | isdn_net_hangup(p->dev); |
1da177e4 LT |
371 | break; |
372 | } | |
373 | } | |
374 | p = (isdn_net_dev *) p->next; | |
375 | } | |
376 | last_jiffies = jiffies; | |
377 | isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, anymore); | |
378 | } | |
379 | ||
380 | static void isdn_net_lp_disconnected(isdn_net_local *lp) | |
381 | { | |
382 | isdn_net_rm_from_bundle(lp); | |
383 | } | |
384 | ||
385 | /* | |
386 | * Handle status-messages from ISDN-interfacecard. | |
387 | * This function is called from within the main-status-dispatcher | |
388 | * isdn_status_callback, which itself is called from the low-level driver. | |
389 | * Return: 1 = Event handled, 0 = not for us or unknown Event. | |
390 | */ | |
391 | int | |
392 | isdn_net_stat_callback(int idx, isdn_ctrl *c) | |
393 | { | |
394 | isdn_net_dev *p = dev->st_netdev[idx]; | |
395 | int cmd = c->command; | |
396 | ||
397 | if (p) { | |
398 | isdn_net_local *lp = p->local; | |
399 | #ifdef CONFIG_ISDN_X25 | |
400 | struct concap_proto *cprot = lp->netdev->cprot; | |
401 | struct concap_proto_ops *pops = cprot ? cprot->pops : NULL; | |
402 | #endif | |
403 | switch (cmd) { | |
404 | case ISDN_STAT_BSENT: | |
405 | /* A packet has successfully been sent out */ | |
406 | if ((lp->flags & ISDN_NET_CONNECTED) && | |
407 | (!lp->dialstate)) { | |
408 | isdn_net_dec_frame_cnt(lp); | |
409 | lp->stats.tx_packets++; | |
410 | lp->stats.tx_bytes += c->parm.length; | |
411 | } | |
412 | return 1; | |
413 | case ISDN_STAT_DCONN: | |
414 | /* D-Channel is up */ | |
415 | switch (lp->dialstate) { | |
416 | case 4: | |
417 | case 7: | |
418 | case 8: | |
419 | lp->dialstate++; | |
420 | return 1; | |
421 | case 12: | |
422 | lp->dialstate = 5; | |
423 | return 1; | |
424 | } | |
425 | break; | |
426 | case ISDN_STAT_DHUP: | |
427 | /* Either D-Channel-hangup or error during dialout */ | |
428 | #ifdef CONFIG_ISDN_X25 | |
429 | /* If we are not connencted then dialing had | |
430 | failed. If there are generic encap protocol | |
431 | receiver routines signal the closure of | |
432 | the link*/ | |
433 | ||
434 | if( !(lp->flags & ISDN_NET_CONNECTED) | |
435 | && pops && pops -> disconn_ind ) | |
436 | pops -> disconn_ind(cprot); | |
437 | #endif /* CONFIG_ISDN_X25 */ | |
438 | if ((!lp->dialstate) && (lp->flags & ISDN_NET_CONNECTED)) { | |
439 | if (lp->p_encap == ISDN_NET_ENCAP_CISCOHDLCK) | |
440 | isdn_net_ciscohdlck_disconnected(lp); | |
441 | #ifdef CONFIG_ISDN_PPP | |
442 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) | |
443 | isdn_ppp_free(lp); | |
444 | #endif | |
445 | isdn_net_lp_disconnected(lp); | |
446 | isdn_all_eaz(lp->isdn_device, lp->isdn_channel); | |
faca94ff KK |
447 | printk(KERN_INFO "%s: remote hangup\n", p->dev->name); |
448 | printk(KERN_INFO "%s: Chargesum is %d\n", p->dev->name, | |
1da177e4 LT |
449 | lp->charge); |
450 | isdn_net_unbind_channel(lp); | |
451 | return 1; | |
452 | } | |
453 | break; | |
454 | #ifdef CONFIG_ISDN_X25 | |
455 | case ISDN_STAT_BHUP: | |
456 | /* B-Channel-hangup */ | |
457 | /* try if there are generic encap protocol | |
458 | receiver routines and signal the closure of | |
459 | the link */ | |
460 | if( pops && pops -> disconn_ind ){ | |
461 | pops -> disconn_ind(cprot); | |
462 | return 1; | |
463 | } | |
464 | break; | |
465 | #endif /* CONFIG_ISDN_X25 */ | |
466 | case ISDN_STAT_BCONN: | |
467 | /* B-Channel is up */ | |
468 | isdn_net_zero_frame_cnt(lp); | |
469 | switch (lp->dialstate) { | |
470 | case 5: | |
471 | case 6: | |
472 | case 7: | |
473 | case 8: | |
474 | case 9: | |
475 | case 10: | |
476 | case 12: | |
477 | if (lp->dialstate <= 6) { | |
478 | dev->usage[idx] |= ISDN_USAGE_OUTGOING; | |
479 | isdn_info_update(); | |
480 | } else | |
481 | dev->rx_netdev[idx] = p; | |
482 | lp->dialstate = 0; | |
483 | isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 1); | |
484 | if (lp->p_encap == ISDN_NET_ENCAP_CISCOHDLCK) | |
485 | isdn_net_ciscohdlck_connected(lp); | |
486 | if (lp->p_encap != ISDN_NET_ENCAP_SYNCPPP) { | |
487 | if (lp->master) { /* is lp a slave? */ | |
838361fe | 488 | isdn_net_dev *nd = ISDN_MASTER_PRIV(lp)->netdev; |
1da177e4 LT |
489 | isdn_net_add_to_bundle(nd, lp); |
490 | } | |
491 | } | |
faca94ff | 492 | printk(KERN_INFO "isdn_net: %s connected\n", p->dev->name); |
1da177e4 LT |
493 | /* If first Chargeinfo comes before B-Channel connect, |
494 | * we correct the timestamp here. | |
495 | */ | |
496 | lp->chargetime = jiffies; | |
497 | ||
498 | /* reset dial-timeout */ | |
499 | lp->dialstarted = 0; | |
500 | lp->dialwait_timer = 0; | |
501 | ||
502 | #ifdef CONFIG_ISDN_PPP | |
503 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) | |
504 | isdn_ppp_wakeup_daemon(lp); | |
505 | #endif | |
506 | #ifdef CONFIG_ISDN_X25 | |
507 | /* try if there are generic concap receiver routines */ | |
508 | if( pops ) | |
509 | if( pops->connect_ind) | |
510 | pops->connect_ind(cprot); | |
511 | #endif /* CONFIG_ISDN_X25 */ | |
512 | /* ppp needs to do negotiations first */ | |
513 | if (lp->p_encap != ISDN_NET_ENCAP_SYNCPPP) | |
514 | isdn_net_device_wake_queue(lp); | |
515 | return 1; | |
516 | } | |
517 | break; | |
518 | case ISDN_STAT_NODCH: | |
519 | /* No D-Channel avail. */ | |
520 | if (lp->dialstate == 4) { | |
521 | lp->dialstate--; | |
522 | return 1; | |
523 | } | |
524 | break; | |
525 | case ISDN_STAT_CINF: | |
526 | /* Charge-info from TelCo. Calculate interval between | |
527 | * charge-infos and set timestamp for last info for | |
528 | * usage by isdn_net_autohup() | |
529 | */ | |
530 | lp->charge++; | |
531 | if (lp->hupflags & ISDN_HAVECHARGE) { | |
532 | lp->hupflags &= ~ISDN_WAITCHARGE; | |
533 | lp->chargeint = jiffies - lp->chargetime - (2 * HZ); | |
534 | } | |
535 | if (lp->hupflags & ISDN_WAITCHARGE) | |
536 | lp->hupflags |= ISDN_HAVECHARGE; | |
537 | lp->chargetime = jiffies; | |
538 | printk(KERN_DEBUG "isdn_net: Got CINF chargetime of %s now %lu\n", | |
faca94ff | 539 | p->dev->name, lp->chargetime); |
1da177e4 LT |
540 | return 1; |
541 | } | |
542 | } | |
543 | return 0; | |
544 | } | |
545 | ||
546 | /* | |
547 | * Perform dialout for net-interfaces and timeout-handling for | |
548 | * D-Channel-up and B-Channel-up Messages. | |
549 | * This function is initially called from within isdn_net_start_xmit() or | |
550 | * or isdn_net_find_icall() after initializing the dialstate for an | |
551 | * interface. If further calls are needed, the function schedules itself | |
552 | * for a timer-callback via isdn_timer_function(). | |
553 | * The dialstate is also affected by incoming status-messages from | |
554 | * the ISDN-Channel which are handled in isdn_net_stat_callback() above. | |
555 | */ | |
556 | void | |
557 | isdn_net_dial(void) | |
558 | { | |
559 | isdn_net_dev *p = dev->netdev; | |
560 | int anymore = 0; | |
561 | int i; | |
562 | isdn_ctrl cmd; | |
563 | u_char *phone_number; | |
564 | ||
565 | while (p) { | |
566 | isdn_net_local *lp = p->local; | |
567 | ||
568 | #ifdef ISDN_DEBUG_NET_DIAL | |
569 | if (lp->dialstate) | |
faca94ff | 570 | printk(KERN_DEBUG "%s: dialstate=%d\n", p->dev->name, lp->dialstate); |
1da177e4 LT |
571 | #endif |
572 | switch (lp->dialstate) { | |
573 | case 0: | |
574 | /* Nothing to do for this interface */ | |
575 | break; | |
576 | case 1: | |
577 | /* Initiate dialout. Set phone-number-pointer to first number | |
578 | * of interface. | |
579 | */ | |
580 | lp->dial = lp->phone[1]; | |
581 | if (!lp->dial) { | |
582 | printk(KERN_WARNING "%s: phone number deleted?\n", | |
faca94ff | 583 | p->dev->name); |
d62a38d1 | 584 | isdn_net_hangup(p->dev); |
1da177e4 LT |
585 | break; |
586 | } | |
587 | anymore = 1; | |
588 | ||
589 | if(lp->dialtimeout > 0) | |
590 | if(lp->dialstarted == 0 || time_after(jiffies, lp->dialstarted + lp->dialtimeout + lp->dialwait)) { | |
591 | lp->dialstarted = jiffies; | |
592 | lp->dialwait_timer = 0; | |
593 | } | |
594 | ||
595 | lp->dialstate++; | |
596 | /* Fall through */ | |
597 | case 2: | |
598 | /* Prepare dialing. Clear EAZ, then set EAZ. */ | |
599 | cmd.driver = lp->isdn_device; | |
600 | cmd.arg = lp->isdn_channel; | |
601 | cmd.command = ISDN_CMD_CLREAZ; | |
602 | isdn_command(&cmd); | |
603 | sprintf(cmd.parm.num, "%s", isdn_map_eaz2msn(lp->msn, cmd.driver)); | |
604 | cmd.command = ISDN_CMD_SETEAZ; | |
605 | isdn_command(&cmd); | |
606 | lp->dialretry = 0; | |
607 | anymore = 1; | |
608 | lp->dialstate++; | |
609 | /* Fall through */ | |
610 | case 3: | |
611 | /* Setup interface, dial current phone-number, switch to next number. | |
612 | * If list of phone-numbers is exhausted, increment | |
613 | * retry-counter. | |
614 | */ | |
615 | if(dev->global_flags & ISDN_GLOBAL_STOPPED || (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF)) { | |
616 | char *s; | |
617 | if (dev->global_flags & ISDN_GLOBAL_STOPPED) | |
618 | s = "dial suppressed: isdn system stopped"; | |
619 | else | |
620 | s = "dial suppressed: dialmode `off'"; | |
d62a38d1 KK |
621 | isdn_net_unreachable(p->dev, NULL, s); |
622 | isdn_net_hangup(p->dev); | |
1da177e4 LT |
623 | break; |
624 | } | |
625 | cmd.driver = lp->isdn_device; | |
626 | cmd.command = ISDN_CMD_SETL2; | |
627 | cmd.arg = lp->isdn_channel + (lp->l2_proto << 8); | |
628 | isdn_command(&cmd); | |
629 | cmd.driver = lp->isdn_device; | |
630 | cmd.command = ISDN_CMD_SETL3; | |
631 | cmd.arg = lp->isdn_channel + (lp->l3_proto << 8); | |
632 | isdn_command(&cmd); | |
633 | cmd.driver = lp->isdn_device; | |
634 | cmd.arg = lp->isdn_channel; | |
635 | if (!lp->dial) { | |
636 | printk(KERN_WARNING "%s: phone number deleted?\n", | |
faca94ff | 637 | p->dev->name); |
d62a38d1 | 638 | isdn_net_hangup(p->dev); |
1da177e4 LT |
639 | break; |
640 | } | |
641 | if (!strncmp(lp->dial->num, "LEASED", strlen("LEASED"))) { | |
642 | lp->dialstate = 4; | |
faca94ff | 643 | printk(KERN_INFO "%s: Open leased line ...\n", p->dev->name); |
1da177e4 LT |
644 | } else { |
645 | if(lp->dialtimeout > 0) | |
646 | if (time_after(jiffies, lp->dialstarted + lp->dialtimeout)) { | |
647 | lp->dialwait_timer = jiffies + lp->dialwait; | |
648 | lp->dialstarted = 0; | |
d62a38d1 KK |
649 | isdn_net_unreachable(p->dev, NULL, "dial: timed out"); |
650 | isdn_net_hangup(p->dev); | |
1da177e4 LT |
651 | break; |
652 | } | |
653 | ||
654 | cmd.driver = lp->isdn_device; | |
655 | cmd.command = ISDN_CMD_DIAL; | |
656 | cmd.parm.setup.si2 = 0; | |
657 | ||
658 | /* check for DOV */ | |
659 | phone_number = lp->dial->num; | |
660 | if ((*phone_number == 'v') || | |
661 | (*phone_number == 'V')) { /* DOV call */ | |
662 | cmd.parm.setup.si1 = 1; | |
663 | } else { /* DATA call */ | |
664 | cmd.parm.setup.si1 = 7; | |
665 | } | |
666 | ||
667 | strcpy(cmd.parm.setup.phone, phone_number); | |
668 | /* | |
669 | * Switch to next number or back to start if at end of list. | |
670 | */ | |
671 | if (!(lp->dial = (isdn_net_phone *) lp->dial->next)) { | |
672 | lp->dial = lp->phone[1]; | |
673 | lp->dialretry++; | |
674 | ||
675 | if (lp->dialretry > lp->dialmax) { | |
676 | if (lp->dialtimeout == 0) { | |
677 | lp->dialwait_timer = jiffies + lp->dialwait; | |
678 | lp->dialstarted = 0; | |
d62a38d1 | 679 | isdn_net_unreachable(p->dev, NULL, "dial: tried all numbers dialmax times"); |
1da177e4 | 680 | } |
d62a38d1 | 681 | isdn_net_hangup(p->dev); |
1da177e4 LT |
682 | break; |
683 | } | |
684 | } | |
685 | sprintf(cmd.parm.setup.eazmsn, "%s", | |
686 | isdn_map_eaz2msn(lp->msn, cmd.driver)); | |
687 | i = isdn_dc2minor(lp->isdn_device, lp->isdn_channel); | |
688 | if (i >= 0) { | |
689 | strcpy(dev->num[i], cmd.parm.setup.phone); | |
690 | dev->usage[i] |= ISDN_USAGE_OUTGOING; | |
691 | isdn_info_update(); | |
692 | } | |
faca94ff | 693 | printk(KERN_INFO "%s: dialing %d %s... %s\n", p->dev->name, |
1da177e4 LT |
694 | lp->dialretry, cmd.parm.setup.phone, |
695 | (cmd.parm.setup.si1 == 1) ? "DOV" : ""); | |
696 | lp->dtimer = 0; | |
697 | #ifdef ISDN_DEBUG_NET_DIAL | |
698 | printk(KERN_DEBUG "dial: d=%d c=%d\n", lp->isdn_device, | |
699 | lp->isdn_channel); | |
700 | #endif | |
701 | isdn_command(&cmd); | |
702 | } | |
703 | lp->huptimer = 0; | |
704 | lp->outgoing = 1; | |
705 | if (lp->chargeint) { | |
706 | lp->hupflags |= ISDN_HAVECHARGE; | |
707 | lp->hupflags &= ~ISDN_WAITCHARGE; | |
708 | } else { | |
709 | lp->hupflags |= ISDN_WAITCHARGE; | |
710 | lp->hupflags &= ~ISDN_HAVECHARGE; | |
711 | } | |
712 | anymore = 1; | |
713 | lp->dialstate = | |
714 | (lp->cbdelay && | |
715 | (lp->flags & ISDN_NET_CBOUT)) ? 12 : 4; | |
716 | break; | |
717 | case 4: | |
718 | /* Wait for D-Channel-connect. | |
719 | * If timeout, switch back to state 3. | |
720 | * Dialmax-handling moved to state 3. | |
721 | */ | |
722 | if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10) | |
723 | lp->dialstate = 3; | |
724 | anymore = 1; | |
725 | break; | |
726 | case 5: | |
727 | /* Got D-Channel-Connect, send B-Channel-request */ | |
728 | cmd.driver = lp->isdn_device; | |
729 | cmd.arg = lp->isdn_channel; | |
730 | cmd.command = ISDN_CMD_ACCEPTB; | |
731 | anymore = 1; | |
732 | lp->dtimer = 0; | |
733 | lp->dialstate++; | |
734 | isdn_command(&cmd); | |
735 | break; | |
736 | case 6: | |
737 | /* Wait for B- or D-Channel-connect. If timeout, | |
738 | * switch back to state 3. | |
739 | */ | |
740 | #ifdef ISDN_DEBUG_NET_DIAL | |
741 | printk(KERN_DEBUG "dialtimer2: %d\n", lp->dtimer); | |
742 | #endif | |
743 | if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10) | |
744 | lp->dialstate = 3; | |
745 | anymore = 1; | |
746 | break; | |
747 | case 7: | |
748 | /* Got incoming Call, setup L2 and L3 protocols, | |
749 | * then wait for D-Channel-connect | |
750 | */ | |
751 | #ifdef ISDN_DEBUG_NET_DIAL | |
752 | printk(KERN_DEBUG "dialtimer4: %d\n", lp->dtimer); | |
753 | #endif | |
754 | cmd.driver = lp->isdn_device; | |
755 | cmd.command = ISDN_CMD_SETL2; | |
756 | cmd.arg = lp->isdn_channel + (lp->l2_proto << 8); | |
757 | isdn_command(&cmd); | |
758 | cmd.driver = lp->isdn_device; | |
759 | cmd.command = ISDN_CMD_SETL3; | |
760 | cmd.arg = lp->isdn_channel + (lp->l3_proto << 8); | |
761 | isdn_command(&cmd); | |
762 | if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT15) | |
d62a38d1 | 763 | isdn_net_hangup(p->dev); |
1da177e4 LT |
764 | else { |
765 | anymore = 1; | |
766 | lp->dialstate++; | |
767 | } | |
768 | break; | |
769 | case 9: | |
770 | /* Got incoming D-Channel-Connect, send B-Channel-request */ | |
771 | cmd.driver = lp->isdn_device; | |
772 | cmd.arg = lp->isdn_channel; | |
773 | cmd.command = ISDN_CMD_ACCEPTB; | |
774 | isdn_command(&cmd); | |
775 | anymore = 1; | |
776 | lp->dtimer = 0; | |
777 | lp->dialstate++; | |
778 | break; | |
779 | case 8: | |
780 | case 10: | |
781 | /* Wait for B- or D-channel-connect */ | |
782 | #ifdef ISDN_DEBUG_NET_DIAL | |
783 | printk(KERN_DEBUG "dialtimer4: %d\n", lp->dtimer); | |
784 | #endif | |
785 | if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10) | |
d62a38d1 | 786 | isdn_net_hangup(p->dev); |
1da177e4 LT |
787 | else |
788 | anymore = 1; | |
789 | break; | |
790 | case 11: | |
791 | /* Callback Delay */ | |
792 | if (lp->dtimer++ > lp->cbdelay) | |
793 | lp->dialstate = 1; | |
794 | anymore = 1; | |
795 | break; | |
796 | case 12: | |
797 | /* Remote does callback. Hangup after cbdelay, then wait for incoming | |
798 | * call (in state 4). | |
799 | */ | |
800 | if (lp->dtimer++ > lp->cbdelay) | |
801 | { | |
faca94ff | 802 | printk(KERN_INFO "%s: hangup waiting for callback ...\n", p->dev->name); |
1da177e4 LT |
803 | lp->dtimer = 0; |
804 | lp->dialstate = 4; | |
805 | cmd.driver = lp->isdn_device; | |
806 | cmd.command = ISDN_CMD_HANGUP; | |
807 | cmd.arg = lp->isdn_channel; | |
808 | isdn_command(&cmd); | |
809 | isdn_all_eaz(lp->isdn_device, lp->isdn_channel); | |
810 | } | |
811 | anymore = 1; | |
812 | break; | |
813 | default: | |
814 | printk(KERN_WARNING "isdn_net: Illegal dialstate %d for device %s\n", | |
faca94ff | 815 | lp->dialstate, p->dev->name); |
1da177e4 LT |
816 | } |
817 | p = (isdn_net_dev *) p->next; | |
818 | } | |
819 | isdn_timer_ctrl(ISDN_TIMER_NETDIAL, anymore); | |
820 | } | |
821 | ||
822 | /* | |
823 | * Perform hangup for a net-interface. | |
824 | */ | |
825 | void | |
826 | isdn_net_hangup(struct net_device *d) | |
827 | { | |
838361fe | 828 | isdn_net_local *lp = (isdn_net_local *) netdev_priv(d); |
1da177e4 LT |
829 | isdn_ctrl cmd; |
830 | #ifdef CONFIG_ISDN_X25 | |
831 | struct concap_proto *cprot = lp->netdev->cprot; | |
832 | struct concap_proto_ops *pops = cprot ? cprot->pops : NULL; | |
833 | #endif | |
834 | ||
835 | if (lp->flags & ISDN_NET_CONNECTED) { | |
836 | if (lp->slave != NULL) { | |
838361fe | 837 | isdn_net_local *slp = ISDN_SLAVE_PRIV(lp); |
1da177e4 LT |
838 | if (slp->flags & ISDN_NET_CONNECTED) { |
839 | printk(KERN_INFO | |
840 | "isdn_net: hang up slave %s before %s\n", | |
faca94ff | 841 | lp->slave->name, d->name); |
1da177e4 LT |
842 | isdn_net_hangup(lp->slave); |
843 | } | |
844 | } | |
faca94ff | 845 | printk(KERN_INFO "isdn_net: local hangup %s\n", d->name); |
1da177e4 LT |
846 | #ifdef CONFIG_ISDN_PPP |
847 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) | |
848 | isdn_ppp_free(lp); | |
849 | #endif | |
850 | isdn_net_lp_disconnected(lp); | |
851 | #ifdef CONFIG_ISDN_X25 | |
852 | /* try if there are generic encap protocol | |
853 | receiver routines and signal the closure of | |
854 | the link */ | |
855 | if( pops && pops -> disconn_ind ) | |
856 | pops -> disconn_ind(cprot); | |
857 | #endif /* CONFIG_ISDN_X25 */ | |
858 | ||
859 | cmd.driver = lp->isdn_device; | |
860 | cmd.command = ISDN_CMD_HANGUP; | |
861 | cmd.arg = lp->isdn_channel; | |
862 | isdn_command(&cmd); | |
faca94ff | 863 | printk(KERN_INFO "%s: Chargesum is %d\n", d->name, lp->charge); |
1da177e4 LT |
864 | isdn_all_eaz(lp->isdn_device, lp->isdn_channel); |
865 | } | |
866 | isdn_net_unbind_channel(lp); | |
867 | } | |
868 | ||
869 | typedef struct { | |
c19d0369 HH |
870 | __be16 source; |
871 | __be16 dest; | |
1da177e4 LT |
872 | } ip_ports; |
873 | ||
874 | static void | |
875 | isdn_net_log_skb(struct sk_buff * skb, isdn_net_local * lp) | |
876 | { | |
d56f90a7 ACM |
877 | /* hopefully, this was set correctly */ |
878 | const u_char *p = skb_network_header(skb); | |
1da177e4 LT |
879 | unsigned short proto = ntohs(skb->protocol); |
880 | int data_ofs; | |
881 | ip_ports *ipp; | |
882 | char addinfo[100]; | |
883 | ||
884 | addinfo[0] = '\0'; | |
885 | /* This check stolen from 2.1.72 dev_queue_xmit_nit() */ | |
27a884dc | 886 | if (p < skb->data || skb->network_header >= skb->tail) { |
1da177e4 LT |
887 | /* fall back to old isdn_net_log_packet method() */ |
888 | char * buf = skb->data; | |
889 | ||
faca94ff | 890 | printk(KERN_DEBUG "isdn_net: protocol %04x is buggy, dev %s\n", skb->protocol, lp->netdev->dev->name); |
1da177e4 LT |
891 | p = buf; |
892 | proto = ETH_P_IP; | |
893 | switch (lp->p_encap) { | |
894 | case ISDN_NET_ENCAP_IPTYP: | |
00bcd522 | 895 | proto = ntohs(*(__be16 *)&buf[0]); |
1da177e4 LT |
896 | p = &buf[2]; |
897 | break; | |
898 | case ISDN_NET_ENCAP_ETHER: | |
00bcd522 | 899 | proto = ntohs(*(__be16 *)&buf[12]); |
1da177e4 LT |
900 | p = &buf[14]; |
901 | break; | |
902 | case ISDN_NET_ENCAP_CISCOHDLC: | |
00bcd522 | 903 | proto = ntohs(*(__be16 *)&buf[2]); |
1da177e4 LT |
904 | p = &buf[4]; |
905 | break; | |
906 | #ifdef CONFIG_ISDN_PPP | |
907 | case ISDN_NET_ENCAP_SYNCPPP: | |
908 | proto = ntohs(skb->protocol); | |
909 | p = &buf[IPPP_MAX_HEADER]; | |
910 | break; | |
911 | #endif | |
912 | } | |
913 | } | |
914 | data_ofs = ((p[0] & 15) * 4); | |
915 | switch (proto) { | |
916 | case ETH_P_IP: | |
917 | switch (p[9]) { | |
918 | case 1: | |
919 | strcpy(addinfo, " ICMP"); | |
920 | break; | |
921 | case 2: | |
922 | strcpy(addinfo, " IGMP"); | |
923 | break; | |
924 | case 4: | |
925 | strcpy(addinfo, " IPIP"); | |
926 | break; | |
927 | case 6: | |
928 | ipp = (ip_ports *) (&p[data_ofs]); | |
929 | sprintf(addinfo, " TCP, port: %d -> %d", ntohs(ipp->source), | |
930 | ntohs(ipp->dest)); | |
931 | break; | |
932 | case 8: | |
933 | strcpy(addinfo, " EGP"); | |
934 | break; | |
935 | case 12: | |
936 | strcpy(addinfo, " PUP"); | |
937 | break; | |
938 | case 17: | |
939 | ipp = (ip_ports *) (&p[data_ofs]); | |
940 | sprintf(addinfo, " UDP, port: %d -> %d", ntohs(ipp->source), | |
941 | ntohs(ipp->dest)); | |
942 | break; | |
943 | case 22: | |
944 | strcpy(addinfo, " IDP"); | |
945 | break; | |
946 | } | |
00bcd522 HH |
947 | printk(KERN_INFO "OPEN: %pI4 -> %pI4%s\n", |
948 | p + 12, p + 16, addinfo); | |
1da177e4 LT |
949 | break; |
950 | case ETH_P_ARP: | |
00bcd522 HH |
951 | printk(KERN_INFO "OPEN: ARP %pI4 -> *.*.*.* ?%pI4\n", |
952 | p + 14, p + 24); | |
1da177e4 LT |
953 | break; |
954 | } | |
955 | } | |
956 | ||
957 | /* | |
958 | * this function is used to send supervisory data, i.e. data which was | |
959 | * not received from the network layer, but e.g. frames from ipppd, CCP | |
960 | * reset frames etc. | |
961 | */ | |
962 | void isdn_net_write_super(isdn_net_local *lp, struct sk_buff *skb) | |
963 | { | |
964 | if (in_irq()) { | |
965 | // we can't grab the lock from irq context, | |
966 | // so we just queue the packet | |
967 | skb_queue_tail(&lp->super_tx_queue, skb); | |
968 | schedule_work(&lp->tqueue); | |
969 | return; | |
970 | } | |
971 | ||
972 | spin_lock_bh(&lp->xmit_lock); | |
973 | if (!isdn_net_lp_busy(lp)) { | |
974 | isdn_net_writebuf_skb(lp, skb); | |
975 | } else { | |
976 | skb_queue_tail(&lp->super_tx_queue, skb); | |
977 | } | |
978 | spin_unlock_bh(&lp->xmit_lock); | |
979 | } | |
980 | ||
981 | /* | |
982 | * called from tq_immediate | |
983 | */ | |
c4028958 | 984 | static void isdn_net_softint(struct work_struct *work) |
1da177e4 | 985 | { |
c4028958 | 986 | isdn_net_local *lp = container_of(work, isdn_net_local, tqueue); |
1da177e4 LT |
987 | struct sk_buff *skb; |
988 | ||
989 | spin_lock_bh(&lp->xmit_lock); | |
990 | while (!isdn_net_lp_busy(lp)) { | |
991 | skb = skb_dequeue(&lp->super_tx_queue); | |
992 | if (!skb) | |
993 | break; | |
994 | isdn_net_writebuf_skb(lp, skb); | |
995 | } | |
996 | spin_unlock_bh(&lp->xmit_lock); | |
997 | } | |
998 | ||
999 | /* | |
1000 | * all frames sent from the (net) LL to a HL driver should go via this function | |
1001 | * it's serialized by the caller holding the lp->xmit_lock spinlock | |
1002 | */ | |
1003 | void isdn_net_writebuf_skb(isdn_net_local *lp, struct sk_buff *skb) | |
1004 | { | |
1005 | int ret; | |
1006 | int len = skb->len; /* save len */ | |
1007 | ||
1008 | /* before obtaining the lock the caller should have checked that | |
1009 | the lp isn't busy */ | |
1010 | if (isdn_net_lp_busy(lp)) { | |
1011 | printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__); | |
1012 | goto error; | |
1013 | } | |
1014 | ||
1015 | if (!(lp->flags & ISDN_NET_CONNECTED)) { | |
1016 | printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__); | |
1017 | goto error; | |
1018 | } | |
1019 | ret = isdn_writebuf_skb_stub(lp->isdn_device, lp->isdn_channel, 1, skb); | |
1020 | if (ret != len) { | |
1021 | /* we should never get here */ | |
faca94ff | 1022 | printk(KERN_WARNING "%s: HL driver queue full\n", lp->netdev->dev->name); |
1da177e4 LT |
1023 | goto error; |
1024 | } | |
1025 | ||
1026 | lp->transcount += len; | |
1027 | isdn_net_inc_frame_cnt(lp); | |
1028 | return; | |
1029 | ||
1030 | error: | |
1031 | dev_kfree_skb(skb); | |
1032 | lp->stats.tx_errors++; | |
1033 | ||
1034 | } | |
1035 | ||
1036 | ||
1037 | /* | |
1038 | * Helper function for isdn_net_start_xmit. | |
1039 | * When called, the connection is already established. | |
1040 | * Based on cps-calculation, check if device is overloaded. | |
1041 | * If so, and if a slave exists, trigger dialing for it. | |
1042 | * If any slave is online, deliver packets using a simple round robin | |
1043 | * scheme. | |
1044 | * | |
1045 | * Return: 0 on success, !0 on failure. | |
1046 | */ | |
1047 | ||
1048 | static int | |
1049 | isdn_net_xmit(struct net_device *ndev, struct sk_buff *skb) | |
1050 | { | |
1051 | isdn_net_dev *nd; | |
1052 | isdn_net_local *slp; | |
838361fe | 1053 | isdn_net_local *lp = (isdn_net_local *) netdev_priv(ndev); |
1da177e4 LT |
1054 | int retv = 0; |
1055 | ||
838361fe | 1056 | if (((isdn_net_local *) netdev_priv(ndev))->master) { |
1da177e4 LT |
1057 | printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__); |
1058 | dev_kfree_skb(skb); | |
1059 | return 0; | |
1060 | } | |
1061 | ||
1062 | /* For the other encaps the header has already been built */ | |
1063 | #ifdef CONFIG_ISDN_PPP | |
1064 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) { | |
1065 | return isdn_ppp_xmit(skb, ndev); | |
1066 | } | |
1067 | #endif | |
838361fe | 1068 | nd = ((isdn_net_local *) netdev_priv(ndev))->netdev; |
1da177e4 LT |
1069 | lp = isdn_net_get_locked_lp(nd); |
1070 | if (!lp) { | |
1071 | printk(KERN_WARNING "%s: all channels busy - requeuing!\n", ndev->name); | |
1072 | return 1; | |
1073 | } | |
1074 | /* we have our lp locked from now on */ | |
1075 | ||
1076 | /* Reset hangup-timeout */ | |
1077 | lp->huptimer = 0; // FIXME? | |
1078 | isdn_net_writebuf_skb(lp, skb); | |
1079 | spin_unlock_bh(&lp->xmit_lock); | |
1080 | ||
1081 | /* the following stuff is here for backwards compatibility. | |
1082 | * in future, start-up and hangup of slaves (based on current load) | |
1083 | * should move to userspace and get based on an overall cps | |
1084 | * calculation | |
1085 | */ | |
1086 | if (lp->cps > lp->triggercps) { | |
1087 | if (lp->slave) { | |
1088 | if (!lp->sqfull) { | |
1089 | /* First time overload: set timestamp only */ | |
1090 | lp->sqfull = 1; | |
1091 | lp->sqfull_stamp = jiffies; | |
1092 | } else { | |
1093 | /* subsequent overload: if slavedelay exceeded, start dialing */ | |
1094 | if (time_after(jiffies, lp->sqfull_stamp + lp->slavedelay)) { | |
838361fe | 1095 | slp = ISDN_SLAVE_PRIV(lp); |
1da177e4 | 1096 | if (!(slp->flags & ISDN_NET_CONNECTED)) { |
838361fe | 1097 | isdn_net_force_dial_lp(ISDN_SLAVE_PRIV(lp)); |
1da177e4 LT |
1098 | } |
1099 | } | |
1100 | } | |
1101 | } | |
1102 | } else { | |
1103 | if (lp->sqfull && time_after(jiffies, lp->sqfull_stamp + lp->slavedelay + (10 * HZ))) { | |
1104 | lp->sqfull = 0; | |
1105 | } | |
1106 | /* this is a hack to allow auto-hangup for slaves on moderate loads */ | |
1107 | nd->queue = nd->local; | |
1108 | } | |
1109 | ||
1110 | return retv; | |
1111 | ||
1112 | } | |
1113 | ||
1114 | static void | |
1115 | isdn_net_adjust_hdr(struct sk_buff *skb, struct net_device *dev) | |
1116 | { | |
838361fe | 1117 | isdn_net_local *lp = (isdn_net_local *) netdev_priv(dev); |
1da177e4 LT |
1118 | if (!skb) |
1119 | return; | |
1120 | if (lp->p_encap == ISDN_NET_ENCAP_ETHER) { | |
bbe735e4 | 1121 | const int pullsize = skb_network_offset(skb) - ETH_HLEN; |
1da177e4 LT |
1122 | if (pullsize > 0) { |
1123 | printk(KERN_DEBUG "isdn_net: Pull junk %d\n", pullsize); | |
1124 | skb_pull(skb, pullsize); | |
1125 | } | |
1126 | } | |
1127 | } | |
1128 | ||
1129 | ||
3e206b0a | 1130 | static void isdn_net_tx_timeout(struct net_device * ndev) |
1da177e4 | 1131 | { |
838361fe | 1132 | isdn_net_local *lp = (isdn_net_local *) netdev_priv(ndev); |
1da177e4 LT |
1133 | |
1134 | printk(KERN_WARNING "isdn_tx_timeout dev %s dialstate %d\n", ndev->name, lp->dialstate); | |
1135 | if (!lp->dialstate){ | |
1136 | lp->stats.tx_errors++; | |
1137 | /* | |
1138 | * There is a certain probability that this currently | |
1139 | * works at all because if we always wake up the interface, | |
1140 | * then upper layer will try to send the next packet | |
1141 | * immediately. And then, the old clean_up logic in the | |
1142 | * driver will hopefully continue to work as it used to do. | |
1143 | * | |
1144 | * This is rather primitive right know, we better should | |
1145 | * clean internal queues here, in particular for multilink and | |
1146 | * ppp, and reset HL driver's channel, too. --HE | |
1147 | * | |
1148 | * actually, this may not matter at all, because ISDN hardware | |
1149 | * should not see transmitter hangs at all IMO | |
1150 | * changed KERN_DEBUG to KERN_WARNING to find out if this is | |
1151 | * ever called --KG | |
1152 | */ | |
1153 | } | |
1154 | ndev->trans_start = jiffies; | |
1155 | netif_wake_queue(ndev); | |
1156 | } | |
1157 | ||
1158 | /* | |
1159 | * Try sending a packet. | |
1160 | * If this interface isn't connected to a ISDN-Channel, find a free channel, | |
1161 | * and start dialing. | |
1162 | */ | |
1163 | static int | |
1164 | isdn_net_start_xmit(struct sk_buff *skb, struct net_device *ndev) | |
1165 | { | |
838361fe | 1166 | isdn_net_local *lp = (isdn_net_local *) netdev_priv(ndev); |
1da177e4 LT |
1167 | #ifdef CONFIG_ISDN_X25 |
1168 | struct concap_proto * cprot = lp -> netdev -> cprot; | |
1169 | /* At this point hard_start_xmit() passes control to the encapsulation | |
1170 | protocol (if present). | |
1171 | For X.25 auto-dialing is completly bypassed because: | |
1172 | - It does not conform with the semantics of a reliable datalink | |
1173 | service as needed by X.25 PLP. | |
1174 | - I don't want that the interface starts dialing when the network layer | |
1175 | sends a message which requests to disconnect the lapb link (or if it | |
1176 | sends any other message not resulting in data transmission). | |
1177 | Instead, dialing will be initiated by the encapsulation protocol entity | |
1178 | when a dl_establish request is received from the upper layer. | |
1179 | */ | |
1180 | if (cprot && cprot -> pops) { | |
1181 | int ret = cprot -> pops -> encap_and_xmit ( cprot , skb); | |
1182 | ||
1183 | if (ret) | |
1184 | netif_stop_queue(ndev); | |
1185 | return ret; | |
1186 | } else | |
1187 | #endif | |
1188 | /* auto-dialing xmit function */ | |
1189 | { | |
1190 | #ifdef ISDN_DEBUG_NET_DUMP | |
1191 | u_char *buf; | |
1192 | #endif | |
1193 | isdn_net_adjust_hdr(skb, ndev); | |
1194 | #ifdef ISDN_DEBUG_NET_DUMP | |
1195 | buf = skb->data; | |
1196 | isdn_dumppkt("S:", buf, skb->len, 40); | |
1197 | #endif | |
1198 | ||
1199 | if (!(lp->flags & ISDN_NET_CONNECTED)) { | |
1200 | int chi; | |
1201 | /* only do autodial if allowed by config */ | |
1202 | if (!(ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_AUTO)) { | |
1203 | isdn_net_unreachable(ndev, skb, "dial rejected: interface not in dialmode `auto'"); | |
1204 | dev_kfree_skb(skb); | |
1205 | return 0; | |
1206 | } | |
1207 | if (lp->phone[1]) { | |
1208 | ulong flags; | |
1209 | ||
1210 | if(lp->dialwait_timer <= 0) | |
1211 | if(lp->dialstarted > 0 && lp->dialtimeout > 0 && time_before(jiffies, lp->dialstarted + lp->dialtimeout + lp->dialwait)) | |
1212 | lp->dialwait_timer = lp->dialstarted + lp->dialtimeout + lp->dialwait; | |
1213 | ||
1214 | if(lp->dialwait_timer > 0) { | |
1215 | if(time_before(jiffies, lp->dialwait_timer)) { | |
1216 | isdn_net_unreachable(ndev, skb, "dial rejected: retry-time not reached"); | |
1217 | dev_kfree_skb(skb); | |
1218 | return 0; | |
1219 | } else | |
1220 | lp->dialwait_timer = 0; | |
1221 | } | |
1222 | /* Grab a free ISDN-Channel */ | |
1223 | spin_lock_irqsave(&dev->lock, flags); | |
1224 | if (((chi = | |
1225 | isdn_get_free_channel( | |
1226 | ISDN_USAGE_NET, | |
1227 | lp->l2_proto, | |
1228 | lp->l3_proto, | |
1229 | lp->pre_device, | |
1230 | lp->pre_channel, | |
1231 | lp->msn) | |
1232 | ) < 0) && | |
1233 | ((chi = | |
1234 | isdn_get_free_channel( | |
1235 | ISDN_USAGE_NET, | |
1236 | lp->l2_proto, | |
1237 | lp->l3_proto, | |
1238 | lp->pre_device, | |
1239 | lp->pre_channel^1, | |
1240 | lp->msn) | |
1241 | ) < 0)) { | |
1242 | spin_unlock_irqrestore(&dev->lock, flags); | |
1243 | isdn_net_unreachable(ndev, skb, | |
1244 | "No channel"); | |
1245 | dev_kfree_skb(skb); | |
1246 | return 0; | |
1247 | } | |
1248 | /* Log packet, which triggered dialing */ | |
1249 | if (dev->net_verbose) | |
1250 | isdn_net_log_skb(skb, lp); | |
1251 | lp->dialstate = 1; | |
1252 | /* Connect interface with channel */ | |
1253 | isdn_net_bind_channel(lp, chi); | |
1254 | #ifdef CONFIG_ISDN_PPP | |
1255 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) { | |
1256 | /* no 'first_skb' handling for syncPPP */ | |
1257 | if (isdn_ppp_bind(lp) < 0) { | |
1258 | dev_kfree_skb(skb); | |
1259 | isdn_net_unbind_channel(lp); | |
1260 | spin_unlock_irqrestore(&dev->lock, flags); | |
1261 | return 0; /* STN (skb to nirvana) ;) */ | |
1262 | } | |
1263 | #ifdef CONFIG_IPPP_FILTER | |
1264 | if (isdn_ppp_autodial_filter(skb, lp)) { | |
1265 | isdn_ppp_free(lp); | |
1266 | isdn_net_unbind_channel(lp); | |
1267 | spin_unlock_irqrestore(&dev->lock, flags); | |
1268 | isdn_net_unreachable(ndev, skb, "dial rejected: packet filtered"); | |
1269 | dev_kfree_skb(skb); | |
1270 | return 0; | |
1271 | } | |
1272 | #endif | |
1273 | spin_unlock_irqrestore(&dev->lock, flags); | |
1274 | isdn_net_dial(); /* Initiate dialing */ | |
1275 | netif_stop_queue(ndev); | |
1276 | return 1; /* let upper layer requeue skb packet */ | |
1277 | } | |
1278 | #endif | |
1279 | /* Initiate dialing */ | |
1280 | spin_unlock_irqrestore(&dev->lock, flags); | |
1281 | isdn_net_dial(); | |
1282 | isdn_net_device_stop_queue(lp); | |
1283 | return 1; | |
1284 | } else { | |
1285 | isdn_net_unreachable(ndev, skb, | |
1286 | "No phone number"); | |
1287 | dev_kfree_skb(skb); | |
1288 | return 0; | |
1289 | } | |
1290 | } else { | |
1291 | /* Device is connected to an ISDN channel */ | |
1292 | ndev->trans_start = jiffies; | |
1293 | if (!lp->dialstate) { | |
1294 | /* ISDN connection is established, try sending */ | |
1295 | int ret; | |
1296 | ret = (isdn_net_xmit(ndev, skb)); | |
1297 | if(ret) netif_stop_queue(ndev); | |
1298 | return ret; | |
1299 | } else | |
1300 | netif_stop_queue(ndev); | |
1301 | } | |
1302 | } | |
1303 | return 1; | |
1304 | } | |
1305 | ||
1306 | /* | |
1307 | * Shutdown a net-interface. | |
1308 | */ | |
1309 | static int | |
1310 | isdn_net_close(struct net_device *dev) | |
1311 | { | |
1312 | struct net_device *p; | |
1313 | #ifdef CONFIG_ISDN_X25 | |
1314 | struct concap_proto * cprot = | |
838361fe | 1315 | ((isdn_net_local *) netdev_priv(dev))->netdev->cprot; |
1da177e4 LT |
1316 | /* printk(KERN_DEBUG "isdn_net_close %s\n" , dev-> name ); */ |
1317 | #endif | |
1318 | ||
1319 | #ifdef CONFIG_ISDN_X25 | |
1320 | if( cprot && cprot -> pops ) cprot -> pops -> close( cprot ); | |
1321 | #endif | |
1322 | netif_stop_queue(dev); | |
838361fe WC |
1323 | p = MASTER_TO_SLAVE(dev); |
1324 | if (p) { | |
1da177e4 LT |
1325 | /* If this interface has slaves, stop them also */ |
1326 | while (p) { | |
1327 | #ifdef CONFIG_ISDN_X25 | |
838361fe | 1328 | cprot = ((isdn_net_local *) netdev_priv(p)) |
1da177e4 LT |
1329 | -> netdev -> cprot; |
1330 | if( cprot && cprot -> pops ) | |
1331 | cprot -> pops -> close( cprot ); | |
1332 | #endif | |
1333 | isdn_net_hangup(p); | |
838361fe | 1334 | p = MASTER_TO_SLAVE(p); |
1da177e4 LT |
1335 | } |
1336 | } | |
1337 | isdn_net_hangup(dev); | |
1338 | isdn_unlock_drivers(); | |
1339 | return 0; | |
1340 | } | |
1341 | ||
1342 | /* | |
1343 | * Get statistics | |
1344 | */ | |
1345 | static struct net_device_stats * | |
1346 | isdn_net_get_stats(struct net_device *dev) | |
1347 | { | |
838361fe | 1348 | isdn_net_local *lp = (isdn_net_local *) netdev_priv(dev); |
1da177e4 LT |
1349 | return &lp->stats; |
1350 | } | |
1351 | ||
1352 | /* This is simply a copy from std. eth.c EXCEPT we pull ETH_HLEN | |
1353 | * instead of dev->hard_header_len off. This is done because the | |
1354 | * lowlevel-driver has already pulled off its stuff when we get | |
1355 | * here and this routine only gets called with p_encap == ETHER. | |
1356 | * Determine the packet's protocol ID. The rule here is that we | |
1357 | * assume 802.3 if the type field is short enough to be a length. | |
1358 | * This is normal practice and works for any 'now in use' protocol. | |
1359 | */ | |
1360 | ||
c19d0369 | 1361 | static __be16 |
1da177e4 LT |
1362 | isdn_net_type_trans(struct sk_buff *skb, struct net_device *dev) |
1363 | { | |
1364 | struct ethhdr *eth; | |
1365 | unsigned char *rawp; | |
1366 | ||
459a98ed | 1367 | skb_reset_mac_header(skb); |
1da177e4 LT |
1368 | skb_pull(skb, ETH_HLEN); |
1369 | eth = eth_hdr(skb); | |
1370 | ||
1371 | if (*eth->h_dest & 1) { | |
1372 | if (memcmp(eth->h_dest, dev->broadcast, ETH_ALEN) == 0) | |
1373 | skb->pkt_type = PACKET_BROADCAST; | |
1374 | else | |
1375 | skb->pkt_type = PACKET_MULTICAST; | |
1376 | } | |
1377 | /* | |
1378 | * This ALLMULTI check should be redundant by 1.4 | |
1379 | * so don't forget to remove it. | |
1380 | */ | |
1381 | ||
1382 | else if (dev->flags & (IFF_PROMISC /*| IFF_ALLMULTI*/)) { | |
1383 | if (memcmp(eth->h_dest, dev->dev_addr, ETH_ALEN)) | |
1384 | skb->pkt_type = PACKET_OTHERHOST; | |
1385 | } | |
1386 | if (ntohs(eth->h_proto) >= 1536) | |
1387 | return eth->h_proto; | |
1388 | ||
1389 | rawp = skb->data; | |
1390 | ||
1391 | /* | |
1392 | * This is a magic hack to spot IPX packets. Older Novell breaks | |
1393 | * the protocol design and runs IPX over 802.3 without an 802.2 LLC | |
1394 | * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This | |
1395 | * won't work for fault tolerant netware but does for the rest. | |
1396 | */ | |
1397 | if (*(unsigned short *) rawp == 0xFFFF) | |
1398 | return htons(ETH_P_802_3); | |
1399 | /* | |
1400 | * Real 802.2 LLC | |
1401 | */ | |
1402 | return htons(ETH_P_802_2); | |
1403 | } | |
1404 | ||
1405 | ||
1406 | /* | |
1407 | * CISCO HDLC keepalive specific stuff | |
1408 | */ | |
1409 | static struct sk_buff* | |
1410 | isdn_net_ciscohdlck_alloc_skb(isdn_net_local *lp, int len) | |
1411 | { | |
1412 | unsigned short hl = dev->drv[lp->isdn_device]->interface->hl_hdrlen; | |
1413 | struct sk_buff *skb; | |
1414 | ||
1415 | skb = alloc_skb(hl + len, GFP_ATOMIC); | |
1416 | if (skb) | |
1417 | skb_reserve(skb, hl); | |
1418 | else | |
1419 | printk("isdn out of mem at %s:%d!\n", __FILE__, __LINE__); | |
1420 | return skb; | |
1421 | } | |
1422 | ||
1423 | /* cisco hdlck device private ioctls */ | |
3e206b0a | 1424 | static int |
1da177e4 LT |
1425 | isdn_ciscohdlck_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
1426 | { | |
838361fe | 1427 | isdn_net_local *lp = (isdn_net_local *) netdev_priv(dev); |
1da177e4 LT |
1428 | unsigned long len = 0; |
1429 | unsigned long expires = 0; | |
1430 | int tmp = 0; | |
1431 | int period = lp->cisco_keepalive_period; | |
1432 | s8 debserint = lp->cisco_debserint; | |
1433 | int rc = 0; | |
1434 | ||
1435 | if (lp->p_encap != ISDN_NET_ENCAP_CISCOHDLCK) | |
1436 | return -EINVAL; | |
1437 | ||
1438 | switch (cmd) { | |
1439 | /* get/set keepalive period */ | |
1440 | case SIOCGKEEPPERIOD: | |
1441 | len = (unsigned long)sizeof(lp->cisco_keepalive_period); | |
1442 | if (copy_to_user(ifr->ifr_data, | |
1443 | &lp->cisco_keepalive_period, len)) | |
1444 | rc = -EFAULT; | |
1445 | break; | |
1446 | case SIOCSKEEPPERIOD: | |
1447 | tmp = lp->cisco_keepalive_period; | |
1448 | len = (unsigned long)sizeof(lp->cisco_keepalive_period); | |
1449 | if (copy_from_user(&period, ifr->ifr_data, len)) | |
1450 | rc = -EFAULT; | |
1451 | if ((period > 0) && (period <= 32767)) | |
1452 | lp->cisco_keepalive_period = period; | |
1453 | else | |
1454 | rc = -EINVAL; | |
1455 | if (!rc && (tmp != lp->cisco_keepalive_period)) { | |
1456 | expires = (unsigned long)(jiffies + | |
1457 | lp->cisco_keepalive_period * HZ); | |
1458 | mod_timer(&lp->cisco_timer, expires); | |
1459 | printk(KERN_INFO "%s: Keepalive period set " | |
1460 | "to %d seconds.\n", | |
faca94ff | 1461 | dev->name, lp->cisco_keepalive_period); |
1da177e4 LT |
1462 | } |
1463 | break; | |
1464 | ||
1465 | /* get/set debugging */ | |
1466 | case SIOCGDEBSERINT: | |
1467 | len = (unsigned long)sizeof(lp->cisco_debserint); | |
1468 | if (copy_to_user(ifr->ifr_data, | |
1469 | &lp->cisco_debserint, len)) | |
1470 | rc = -EFAULT; | |
1471 | break; | |
1472 | case SIOCSDEBSERINT: | |
1473 | len = (unsigned long)sizeof(lp->cisco_debserint); | |
1474 | if (copy_from_user(&debserint, | |
1475 | ifr->ifr_data, len)) | |
1476 | rc = -EFAULT; | |
1477 | if ((debserint >= 0) && (debserint <= 64)) | |
1478 | lp->cisco_debserint = debserint; | |
1479 | else | |
1480 | rc = -EINVAL; | |
1481 | break; | |
1482 | ||
1483 | default: | |
1484 | rc = -EINVAL; | |
1485 | break; | |
1486 | } | |
1487 | return (rc); | |
1488 | } | |
1489 | ||
d700555b SH |
1490 | |
1491 | static int isdn_net_ioctl(struct net_device *dev, | |
1492 | struct ifreq *ifr, int cmd) | |
1493 | { | |
1494 | isdn_net_local *lp = (isdn_net_local *) netdev_priv(dev); | |
1495 | ||
1496 | switch (lp->p_encap) { | |
1497 | #ifdef CONFIG_ISDN_PPP | |
1498 | case ISDN_NET_ENCAP_SYNCPPP: | |
1499 | return isdn_ppp_dev_ioctl(dev, ifr, cmd); | |
1500 | #endif | |
1501 | case ISDN_NET_ENCAP_CISCOHDLCK: | |
1502 | return isdn_ciscohdlck_dev_ioctl(dev, ifr, cmd); | |
1503 | default: | |
1504 | return -EINVAL; | |
1505 | } | |
1506 | } | |
1507 | ||
1da177e4 LT |
1508 | /* called via cisco_timer.function */ |
1509 | static void | |
1510 | isdn_net_ciscohdlck_slarp_send_keepalive(unsigned long data) | |
1511 | { | |
1512 | isdn_net_local *lp = (isdn_net_local *) data; | |
1513 | struct sk_buff *skb; | |
1514 | unsigned char *p; | |
1515 | unsigned long last_cisco_myseq = lp->cisco_myseq; | |
1516 | int myseq_diff = 0; | |
1517 | ||
1518 | if (!(lp->flags & ISDN_NET_CONNECTED) || lp->dialstate) { | |
1519 | printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__); | |
1520 | return; | |
1521 | } | |
1522 | lp->cisco_myseq++; | |
1523 | ||
1524 | myseq_diff = (lp->cisco_myseq - lp->cisco_mineseen); | |
1525 | if ((lp->cisco_line_state) && ((myseq_diff >= 3)||(myseq_diff <= -3))) { | |
1526 | /* line up -> down */ | |
1527 | lp->cisco_line_state = 0; | |
1528 | printk (KERN_WARNING | |
1529 | "UPDOWN: Line protocol on Interface %s," | |
faca94ff | 1530 | " changed state to down\n", lp->netdev->dev->name); |
1da177e4 LT |
1531 | /* should stop routing higher-level data accross */ |
1532 | } else if ((!lp->cisco_line_state) && | |
1533 | (myseq_diff >= 0) && (myseq_diff <= 2)) { | |
1534 | /* line down -> up */ | |
1535 | lp->cisco_line_state = 1; | |
1536 | printk (KERN_WARNING | |
1537 | "UPDOWN: Line protocol on Interface %s," | |
faca94ff | 1538 | " changed state to up\n", lp->netdev->dev->name); |
1da177e4 LT |
1539 | /* restart routing higher-level data accross */ |
1540 | } | |
1541 | ||
1542 | if (lp->cisco_debserint) | |
1543 | printk (KERN_DEBUG "%s: HDLC " | |
1544 | "myseq %lu, mineseen %lu%c, yourseen %lu, %s\n", | |
faca94ff | 1545 | lp->netdev->dev->name, last_cisco_myseq, lp->cisco_mineseen, |
1da177e4 LT |
1546 | ((last_cisco_myseq == lp->cisco_mineseen) ? '*' : 040), |
1547 | lp->cisco_yourseq, | |
1548 | ((lp->cisco_line_state) ? "line up" : "line down")); | |
1549 | ||
1550 | skb = isdn_net_ciscohdlck_alloc_skb(lp, 4 + 14); | |
1551 | if (!skb) | |
1552 | return; | |
1553 | ||
1554 | p = skb_put(skb, 4 + 14); | |
1555 | ||
1556 | /* cisco header */ | |
00bcd522 HH |
1557 | *(u8 *)(p + 0) = CISCO_ADDR_UNICAST; |
1558 | *(u8 *)(p + 1) = CISCO_CTRL; | |
1559 | *(__be16 *)(p + 2) = cpu_to_be16(CISCO_TYPE_SLARP); | |
1da177e4 LT |
1560 | |
1561 | /* slarp keepalive */ | |
00bcd522 HH |
1562 | *(__be32 *)(p + 4) = cpu_to_be32(CISCO_SLARP_KEEPALIVE); |
1563 | *(__be32 *)(p + 8) = cpu_to_be32(lp->cisco_myseq); | |
1564 | *(__be32 *)(p + 12) = cpu_to_be32(lp->cisco_yourseq); | |
1565 | *(__be16 *)(p + 16) = cpu_to_be16(0xffff); // reliablity, always 0xffff | |
1566 | p += 18; | |
1da177e4 LT |
1567 | |
1568 | isdn_net_write_super(lp, skb); | |
1569 | ||
1570 | lp->cisco_timer.expires = jiffies + lp->cisco_keepalive_period * HZ; | |
1571 | ||
1572 | add_timer(&lp->cisco_timer); | |
1573 | } | |
1574 | ||
1575 | static void | |
1576 | isdn_net_ciscohdlck_slarp_send_request(isdn_net_local *lp) | |
1577 | { | |
1578 | struct sk_buff *skb; | |
1579 | unsigned char *p; | |
1580 | ||
1581 | skb = isdn_net_ciscohdlck_alloc_skb(lp, 4 + 14); | |
1582 | if (!skb) | |
1583 | return; | |
1584 | ||
1585 | p = skb_put(skb, 4 + 14); | |
1586 | ||
1587 | /* cisco header */ | |
00bcd522 HH |
1588 | *(u8 *)(p + 0) = CISCO_ADDR_UNICAST; |
1589 | *(u8 *)(p + 1) = CISCO_CTRL; | |
1590 | *(__be16 *)(p + 2) = cpu_to_be16(CISCO_TYPE_SLARP); | |
1da177e4 LT |
1591 | |
1592 | /* slarp request */ | |
00bcd522 HH |
1593 | *(__be32 *)(p + 4) = cpu_to_be32(CISCO_SLARP_REQUEST); |
1594 | *(__be32 *)(p + 8) = cpu_to_be32(0); // address | |
1595 | *(__be32 *)(p + 12) = cpu_to_be32(0); // netmask | |
1596 | *(__be16 *)(p + 16) = cpu_to_be16(0); // unused | |
1597 | p += 18; | |
1da177e4 LT |
1598 | |
1599 | isdn_net_write_super(lp, skb); | |
1600 | } | |
1601 | ||
1602 | static void | |
1603 | isdn_net_ciscohdlck_connected(isdn_net_local *lp) | |
1604 | { | |
1605 | lp->cisco_myseq = 0; | |
1606 | lp->cisco_mineseen = 0; | |
1607 | lp->cisco_yourseq = 0; | |
1608 | lp->cisco_keepalive_period = ISDN_TIMER_KEEPINT; | |
1609 | lp->cisco_last_slarp_in = 0; | |
1610 | lp->cisco_line_state = 0; | |
1611 | lp->cisco_debserint = 0; | |
1612 | ||
1613 | /* send slarp request because interface/seq.no.s reset */ | |
1614 | isdn_net_ciscohdlck_slarp_send_request(lp); | |
1615 | ||
1616 | init_timer(&lp->cisco_timer); | |
1617 | lp->cisco_timer.data = (unsigned long) lp; | |
1618 | lp->cisco_timer.function = isdn_net_ciscohdlck_slarp_send_keepalive; | |
1619 | lp->cisco_timer.expires = jiffies + lp->cisco_keepalive_period * HZ; | |
1620 | add_timer(&lp->cisco_timer); | |
1621 | } | |
1622 | ||
1623 | static void | |
1624 | isdn_net_ciscohdlck_disconnected(isdn_net_local *lp) | |
1625 | { | |
1626 | del_timer(&lp->cisco_timer); | |
1627 | } | |
1628 | ||
1629 | static void | |
1630 | isdn_net_ciscohdlck_slarp_send_reply(isdn_net_local *lp) | |
1631 | { | |
1632 | struct sk_buff *skb; | |
1633 | unsigned char *p; | |
1634 | struct in_device *in_dev = NULL; | |
a144ea4b AV |
1635 | __be32 addr = 0; /* local ipv4 address */ |
1636 | __be32 mask = 0; /* local netmask */ | |
1da177e4 | 1637 | |
d62a38d1 | 1638 | if ((in_dev = lp->netdev->dev->ip_ptr) != NULL) { |
1da177e4 LT |
1639 | /* take primary(first) address of interface */ |
1640 | struct in_ifaddr *ifa = in_dev->ifa_list; | |
1641 | if (ifa != NULL) { | |
1642 | addr = ifa->ifa_local; | |
1643 | mask = ifa->ifa_mask; | |
1644 | } | |
1645 | } | |
1646 | ||
1647 | skb = isdn_net_ciscohdlck_alloc_skb(lp, 4 + 14); | |
1648 | if (!skb) | |
1649 | return; | |
1650 | ||
1651 | p = skb_put(skb, 4 + 14); | |
1652 | ||
1653 | /* cisco header */ | |
00bcd522 HH |
1654 | *(u8 *)(p + 0) = CISCO_ADDR_UNICAST; |
1655 | *(u8 *)(p + 1) = CISCO_CTRL; | |
1656 | *(__be16 *)(p + 2) = cpu_to_be16(CISCO_TYPE_SLARP); | |
1da177e4 LT |
1657 | |
1658 | /* slarp reply, send own ip/netmask; if values are nonsense remote | |
1659 | * should think we are unable to provide it with an address via SLARP */ | |
00bcd522 | 1660 | *(__be32 *)(p + 4) = cpu_to_be32(CISCO_SLARP_REPLY); |
198d6ba4 DM |
1661 | *(__be32 *)(p + 8) = addr; // address |
1662 | *(__be32 *)(p + 12) = mask; // netmask | |
00bcd522 HH |
1663 | *(__be16 *)(p + 16) = cpu_to_be16(0); // unused |
1664 | p += 18; | |
1da177e4 LT |
1665 | |
1666 | isdn_net_write_super(lp, skb); | |
1667 | } | |
1668 | ||
1669 | static void | |
1670 | isdn_net_ciscohdlck_slarp_in(isdn_net_local *lp, struct sk_buff *skb) | |
1671 | { | |
1672 | unsigned char *p; | |
1673 | int period; | |
1674 | u32 code; | |
8cf14e38 HH |
1675 | u32 my_seq; |
1676 | u32 your_seq; | |
1677 | __be32 local; | |
1678 | __be32 *addr, *mask; | |
1da177e4 LT |
1679 | u16 unused; |
1680 | ||
1681 | if (skb->len < 14) | |
1682 | return; | |
1683 | ||
1684 | p = skb->data; | |
00bcd522 HH |
1685 | code = be32_to_cpup((__be32 *)p); |
1686 | p += 4; | |
1687 | ||
1da177e4 LT |
1688 | switch (code) { |
1689 | case CISCO_SLARP_REQUEST: | |
1690 | lp->cisco_yourseq = 0; | |
1691 | isdn_net_ciscohdlck_slarp_send_reply(lp); | |
1692 | break; | |
1693 | case CISCO_SLARP_REPLY: | |
8cf14e38 HH |
1694 | addr = (__be32 *)p; |
1695 | mask = (__be32 *)(p + 4); | |
1696 | if (*mask != cpu_to_be32(0xfffffffc)) | |
1da177e4 | 1697 | goto slarp_reply_out; |
8cf14e38 HH |
1698 | if ((*addr & cpu_to_be32(3)) == cpu_to_be32(0) || |
1699 | (*addr & cpu_to_be32(3)) == cpu_to_be32(3)) | |
1da177e4 | 1700 | goto slarp_reply_out; |
8cf14e38 HH |
1701 | local = *addr ^ cpu_to_be32(3); |
1702 | printk(KERN_INFO "%s: got slarp reply: remote ip: %pI4, local ip: %pI4 mask: %pI4\n", | |
1703 | lp->netdev->dev->name, addr, &local, mask); | |
1da177e4 LT |
1704 | break; |
1705 | slarp_reply_out: | |
8cf14e38 HH |
1706 | printk(KERN_INFO "%s: got invalid slarp reply (%pI4/%pI4) - ignored\n", |
1707 | lp->netdev->dev->name, addr, mask); | |
1da177e4 LT |
1708 | break; |
1709 | case CISCO_SLARP_KEEPALIVE: | |
1710 | period = (int)((jiffies - lp->cisco_last_slarp_in | |
1711 | + HZ/2 - 1) / HZ); | |
1712 | if (lp->cisco_debserint && | |
1713 | (period != lp->cisco_keepalive_period) && | |
1714 | lp->cisco_last_slarp_in) { | |
1715 | printk(KERN_DEBUG "%s: Keepalive period mismatch - " | |
1716 | "is %d but should be %d.\n", | |
faca94ff KK |
1717 | lp->netdev->dev->name, period, |
1718 | lp->cisco_keepalive_period); | |
1da177e4 LT |
1719 | } |
1720 | lp->cisco_last_slarp_in = jiffies; | |
00bcd522 HH |
1721 | my_seq = be32_to_cpup((__be32 *)(p + 0)); |
1722 | your_seq = be32_to_cpup((__be32 *)(p + 4)); | |
1723 | unused = be16_to_cpup((__be16 *)(p + 8)); | |
1724 | p += 10; | |
1da177e4 LT |
1725 | lp->cisco_yourseq = my_seq; |
1726 | lp->cisco_mineseen = your_seq; | |
1727 | break; | |
1728 | } | |
1729 | } | |
1730 | ||
1731 | static void | |
1732 | isdn_net_ciscohdlck_receive(isdn_net_local *lp, struct sk_buff *skb) | |
1733 | { | |
1734 | unsigned char *p; | |
1735 | u8 addr; | |
1736 | u8 ctrl; | |
1737 | u16 type; | |
1738 | ||
1739 | if (skb->len < 4) | |
1740 | goto out_free; | |
1741 | ||
1742 | p = skb->data; | |
00bcd522 HH |
1743 | addr = *(u8 *)(p + 0); |
1744 | ctrl = *(u8 *)(p + 1); | |
1745 | type = be16_to_cpup((__be16 *)(p + 2)); | |
1746 | p += 4; | |
1da177e4 LT |
1747 | skb_pull(skb, 4); |
1748 | ||
1749 | if (addr != CISCO_ADDR_UNICAST && addr != CISCO_ADDR_BROADCAST) { | |
1750 | printk(KERN_WARNING "%s: Unknown Cisco addr 0x%02x\n", | |
faca94ff | 1751 | lp->netdev->dev->name, addr); |
1da177e4 LT |
1752 | goto out_free; |
1753 | } | |
1754 | if (ctrl != CISCO_CTRL) { | |
1755 | printk(KERN_WARNING "%s: Unknown Cisco ctrl 0x%02x\n", | |
faca94ff | 1756 | lp->netdev->dev->name, ctrl); |
1da177e4 LT |
1757 | goto out_free; |
1758 | } | |
1759 | ||
1760 | switch (type) { | |
1761 | case CISCO_TYPE_SLARP: | |
1762 | isdn_net_ciscohdlck_slarp_in(lp, skb); | |
1763 | goto out_free; | |
1764 | case CISCO_TYPE_CDP: | |
1765 | if (lp->cisco_debserint) | |
1766 | printk(KERN_DEBUG "%s: Received CDP packet. use " | |
faca94ff KK |
1767 | "\"no cdp enable\" on cisco.\n", |
1768 | lp->netdev->dev->name); | |
1da177e4 LT |
1769 | goto out_free; |
1770 | default: | |
1771 | /* no special cisco protocol */ | |
1772 | skb->protocol = htons(type); | |
1773 | netif_rx(skb); | |
1774 | return; | |
1775 | } | |
1776 | ||
1777 | out_free: | |
1778 | kfree_skb(skb); | |
1779 | } | |
1780 | ||
1781 | /* | |
1782 | * Got a packet from ISDN-Channel. | |
1783 | */ | |
1784 | static void | |
1785 | isdn_net_receive(struct net_device *ndev, struct sk_buff *skb) | |
1786 | { | |
838361fe | 1787 | isdn_net_local *lp = (isdn_net_local *) netdev_priv(ndev); |
1da177e4 LT |
1788 | isdn_net_local *olp = lp; /* original 'lp' */ |
1789 | #ifdef CONFIG_ISDN_X25 | |
1790 | struct concap_proto *cprot = lp -> netdev -> cprot; | |
1791 | #endif | |
1792 | lp->transcount += skb->len; | |
1793 | ||
1794 | lp->stats.rx_packets++; | |
1795 | lp->stats.rx_bytes += skb->len; | |
1796 | if (lp->master) { | |
1797 | /* Bundling: If device is a slave-device, deliver to master, also | |
1798 | * handle master's statistics and hangup-timeout | |
1799 | */ | |
1800 | ndev = lp->master; | |
838361fe | 1801 | lp = (isdn_net_local *) netdev_priv(ndev); |
1da177e4 LT |
1802 | lp->stats.rx_packets++; |
1803 | lp->stats.rx_bytes += skb->len; | |
1804 | } | |
1805 | skb->dev = ndev; | |
1da177e4 | 1806 | skb->pkt_type = PACKET_HOST; |
459a98ed | 1807 | skb_reset_mac_header(skb); |
1da177e4 LT |
1808 | #ifdef ISDN_DEBUG_NET_DUMP |
1809 | isdn_dumppkt("R:", skb->data, skb->len, 40); | |
1810 | #endif | |
1811 | switch (lp->p_encap) { | |
1812 | case ISDN_NET_ENCAP_ETHER: | |
1813 | /* Ethernet over ISDN */ | |
1814 | olp->huptimer = 0; | |
1815 | lp->huptimer = 0; | |
1816 | skb->protocol = isdn_net_type_trans(skb, ndev); | |
1817 | break; | |
1818 | case ISDN_NET_ENCAP_UIHDLC: | |
1819 | /* HDLC with UI-frame (for ispa with -h1 option) */ | |
1820 | olp->huptimer = 0; | |
1821 | lp->huptimer = 0; | |
1822 | skb_pull(skb, 2); | |
1823 | /* Fall through */ | |
1824 | case ISDN_NET_ENCAP_RAWIP: | |
1825 | /* RAW-IP without MAC-Header */ | |
1826 | olp->huptimer = 0; | |
1827 | lp->huptimer = 0; | |
1828 | skb->protocol = htons(ETH_P_IP); | |
1829 | break; | |
1830 | case ISDN_NET_ENCAP_CISCOHDLCK: | |
1831 | isdn_net_ciscohdlck_receive(lp, skb); | |
1832 | return; | |
1833 | case ISDN_NET_ENCAP_CISCOHDLC: | |
1834 | /* CISCO-HDLC IP with type field and fake I-frame-header */ | |
1835 | skb_pull(skb, 2); | |
1836 | /* Fall through */ | |
1837 | case ISDN_NET_ENCAP_IPTYP: | |
1838 | /* IP with type field */ | |
1839 | olp->huptimer = 0; | |
1840 | lp->huptimer = 0; | |
c19d0369 | 1841 | skb->protocol = *(__be16 *)&(skb->data[0]); |
1da177e4 LT |
1842 | skb_pull(skb, 2); |
1843 | if (*(unsigned short *) skb->data == 0xFFFF) | |
1844 | skb->protocol = htons(ETH_P_802_3); | |
1845 | break; | |
1846 | #ifdef CONFIG_ISDN_PPP | |
1847 | case ISDN_NET_ENCAP_SYNCPPP: | |
1848 | /* huptimer is done in isdn_ppp_push_higher */ | |
1849 | isdn_ppp_receive(lp->netdev, olp, skb); | |
1850 | return; | |
1851 | #endif | |
1852 | ||
1853 | default: | |
1854 | #ifdef CONFIG_ISDN_X25 | |
1855 | /* try if there are generic sync_device receiver routines */ | |
1856 | if(cprot) if(cprot -> pops) | |
1857 | if( cprot -> pops -> data_ind){ | |
1858 | cprot -> pops -> data_ind(cprot,skb); | |
1859 | return; | |
1860 | }; | |
1861 | #endif /* CONFIG_ISDN_X25 */ | |
1862 | printk(KERN_WARNING "%s: unknown encapsulation, dropping\n", | |
faca94ff | 1863 | lp->netdev->dev->name); |
1da177e4 LT |
1864 | kfree_skb(skb); |
1865 | return; | |
1866 | } | |
1867 | ||
1868 | netif_rx(skb); | |
1869 | return; | |
1870 | } | |
1871 | ||
1872 | /* | |
1873 | * A packet arrived via ISDN. Search interface-chain for a corresponding | |
1874 | * interface. If found, deliver packet to receiver-function and return 1, | |
1875 | * else return 0. | |
1876 | */ | |
1877 | int | |
1878 | isdn_net_rcv_skb(int idx, struct sk_buff *skb) | |
1879 | { | |
1880 | isdn_net_dev *p = dev->rx_netdev[idx]; | |
1881 | ||
1882 | if (p) { | |
1883 | isdn_net_local *lp = p->local; | |
1884 | if ((lp->flags & ISDN_NET_CONNECTED) && | |
1885 | (!lp->dialstate)) { | |
d62a38d1 | 1886 | isdn_net_receive(p->dev, skb); |
1da177e4 LT |
1887 | return 1; |
1888 | } | |
1889 | } | |
1890 | return 0; | |
1891 | } | |
1892 | ||
1da177e4 LT |
1893 | /* |
1894 | * build an header | |
1895 | * depends on encaps that is being used. | |
1896 | */ | |
1897 | ||
3b04ddde SH |
1898 | static int isdn_net_header(struct sk_buff *skb, struct net_device *dev, |
1899 | unsigned short type, | |
1900 | const void *daddr, const void *saddr, unsigned plen) | |
1da177e4 | 1901 | { |
838361fe | 1902 | isdn_net_local *lp = netdev_priv(dev); |
1da177e4 LT |
1903 | unsigned char *p; |
1904 | ushort len = 0; | |
1905 | ||
1906 | switch (lp->p_encap) { | |
1907 | case ISDN_NET_ENCAP_ETHER: | |
3b04ddde | 1908 | len = eth_header(skb, dev, type, daddr, saddr, plen); |
1da177e4 LT |
1909 | break; |
1910 | #ifdef CONFIG_ISDN_PPP | |
1911 | case ISDN_NET_ENCAP_SYNCPPP: | |
1912 | /* stick on a fake header to keep fragmentation code happy. */ | |
1913 | len = IPPP_MAX_HEADER; | |
1914 | skb_push(skb,len); | |
1915 | break; | |
1916 | #endif | |
1917 | case ISDN_NET_ENCAP_RAWIP: | |
1918 | printk(KERN_WARNING "isdn_net_header called with RAW_IP!\n"); | |
1919 | len = 0; | |
1920 | break; | |
1921 | case ISDN_NET_ENCAP_IPTYP: | |
1922 | /* ethernet type field */ | |
c19d0369 | 1923 | *((__be16 *)skb_push(skb, 2)) = htons(type); |
1da177e4 LT |
1924 | len = 2; |
1925 | break; | |
1926 | case ISDN_NET_ENCAP_UIHDLC: | |
1927 | /* HDLC with UI-Frames (for ispa with -h1 option) */ | |
c19d0369 | 1928 | *((__be16 *)skb_push(skb, 2)) = htons(0x0103); |
1da177e4 LT |
1929 | len = 2; |
1930 | break; | |
1931 | case ISDN_NET_ENCAP_CISCOHDLC: | |
1932 | case ISDN_NET_ENCAP_CISCOHDLCK: | |
1933 | p = skb_push(skb, 4); | |
00bcd522 HH |
1934 | *(u8 *)(p + 0) = CISCO_ADDR_UNICAST; |
1935 | *(u8 *)(p + 1) = CISCO_CTRL; | |
1936 | *(__be16 *)(p + 2) = cpu_to_be16(type); | |
1937 | p += 4; | |
1da177e4 LT |
1938 | len = 4; |
1939 | break; | |
1940 | #ifdef CONFIG_ISDN_X25 | |
1941 | default: | |
1942 | /* try if there are generic concap protocol routines */ | |
1943 | if( lp-> netdev -> cprot ){ | |
1944 | printk(KERN_WARNING "isdn_net_header called with concap_proto!\n"); | |
1945 | len = 0; | |
1946 | break; | |
1947 | } | |
1948 | break; | |
1949 | #endif /* CONFIG_ISDN_X25 */ | |
1950 | } | |
1951 | return len; | |
1952 | } | |
1953 | ||
1954 | /* We don't need to send arp, because we have point-to-point connections. */ | |
1955 | static int | |
1956 | isdn_net_rebuild_header(struct sk_buff *skb) | |
1957 | { | |
1958 | struct net_device *dev = skb->dev; | |
838361fe | 1959 | isdn_net_local *lp = netdev_priv(dev); |
1da177e4 LT |
1960 | int ret = 0; |
1961 | ||
1962 | if (lp->p_encap == ISDN_NET_ENCAP_ETHER) { | |
1963 | struct ethhdr *eth = (struct ethhdr *) skb->data; | |
1964 | ||
1965 | /* | |
1966 | * Only ARP/IP is currently supported | |
1967 | */ | |
1968 | ||
1969 | if (eth->h_proto != htons(ETH_P_IP)) { | |
1970 | printk(KERN_WARNING | |
1971 | "isdn_net: %s don't know how to resolve type %d addresses?\n", | |
1972 | dev->name, (int) eth->h_proto); | |
1973 | memcpy(eth->h_source, dev->dev_addr, dev->addr_len); | |
1974 | return 0; | |
1975 | } | |
1976 | /* | |
1977 | * Try to get ARP to resolve the header. | |
1978 | */ | |
1979 | #ifdef CONFIG_INET | |
1980 | ret = arp_find(eth->h_dest, skb); | |
1981 | #endif | |
1982 | } | |
1983 | return ret; | |
1984 | } | |
1985 | ||
3b04ddde SH |
1986 | static int isdn_header_cache(const struct neighbour *neigh, struct hh_cache *hh) |
1987 | { | |
1988 | const struct net_device *dev = neigh->dev; | |
838361fe | 1989 | isdn_net_local *lp = netdev_priv(dev); |
3b04ddde SH |
1990 | |
1991 | if (lp->p_encap == ISDN_NET_ENCAP_ETHER) | |
1992 | return eth_header_cache(neigh, hh); | |
1993 | return -1; | |
1994 | } | |
1995 | ||
1996 | static void isdn_header_cache_update(struct hh_cache *hh, | |
1997 | const struct net_device *dev, | |
1998 | const unsigned char *haddr) | |
1999 | { | |
838361fe | 2000 | isdn_net_local *lp = netdev_priv(dev); |
3b04ddde | 2001 | if (lp->p_encap == ISDN_NET_ENCAP_ETHER) |
c19d0369 | 2002 | eth_header_cache_update(hh, dev, haddr); |
3b04ddde SH |
2003 | } |
2004 | ||
2005 | static const struct header_ops isdn_header_ops = { | |
2006 | .create = isdn_net_header, | |
2007 | .rebuild = isdn_net_rebuild_header, | |
2008 | .cache = isdn_header_cache, | |
2009 | .cache_update = isdn_header_cache_update, | |
2010 | }; | |
2011 | ||
1da177e4 LT |
2012 | /* |
2013 | * Interface-setup. (just after registering a new interface) | |
2014 | */ | |
2015 | static int | |
2016 | isdn_net_init(struct net_device *ndev) | |
2017 | { | |
2018 | ushort max_hlhdr_len = 0; | |
3b04ddde | 2019 | int drvidx; |
1da177e4 | 2020 | |
1da177e4 LT |
2021 | /* |
2022 | * up till binding we ask the protocol layer to reserve as much | |
2023 | * as we might need for HL layer | |
2024 | */ | |
2025 | ||
2026 | for (drvidx = 0; drvidx < ISDN_MAX_DRIVERS; drvidx++) | |
2027 | if (dev->drv[drvidx]) | |
2028 | if (max_hlhdr_len < dev->drv[drvidx]->interface->hl_hdrlen) | |
2029 | max_hlhdr_len = dev->drv[drvidx]->interface->hl_hdrlen; | |
2030 | ||
2031 | ndev->hard_header_len = ETH_HLEN + max_hlhdr_len; | |
1da177e4 LT |
2032 | return 0; |
2033 | } | |
2034 | ||
2035 | static void | |
2036 | isdn_net_swapbind(int drvidx) | |
2037 | { | |
2038 | isdn_net_dev *p; | |
2039 | ||
2040 | #ifdef ISDN_DEBUG_NET_ICALL | |
2041 | printk(KERN_DEBUG "n_fi: swapping ch of %d\n", drvidx); | |
2042 | #endif | |
2043 | p = dev->netdev; | |
2044 | while (p) { | |
2045 | if (p->local->pre_device == drvidx) | |
2046 | switch (p->local->pre_channel) { | |
2047 | case 0: | |
2048 | p->local->pre_channel = 1; | |
2049 | break; | |
2050 | case 1: | |
2051 | p->local->pre_channel = 0; | |
2052 | break; | |
2053 | } | |
2054 | p = (isdn_net_dev *) p->next; | |
2055 | } | |
2056 | } | |
2057 | ||
2058 | static void | |
2059 | isdn_net_swap_usage(int i1, int i2) | |
2060 | { | |
2061 | int u1 = dev->usage[i1] & ISDN_USAGE_EXCLUSIVE; | |
2062 | int u2 = dev->usage[i2] & ISDN_USAGE_EXCLUSIVE; | |
2063 | ||
2064 | #ifdef ISDN_DEBUG_NET_ICALL | |
2065 | printk(KERN_DEBUG "n_fi: usage of %d and %d\n", i1, i2); | |
2066 | #endif | |
2067 | dev->usage[i1] &= ~ISDN_USAGE_EXCLUSIVE; | |
2068 | dev->usage[i1] |= u2; | |
2069 | dev->usage[i2] &= ~ISDN_USAGE_EXCLUSIVE; | |
2070 | dev->usage[i2] |= u1; | |
2071 | isdn_info_update(); | |
2072 | } | |
2073 | ||
2074 | /* | |
2075 | * An incoming call-request has arrived. | |
2076 | * Search the interface-chain for an appropriate interface. | |
2077 | * If found, connect the interface to the ISDN-channel and initiate | |
2078 | * D- and B-Channel-setup. If secure-flag is set, accept only | |
2079 | * configured phone-numbers. If callback-flag is set, initiate | |
2080 | * callback-dialing. | |
2081 | * | |
2082 | * Return-Value: 0 = No appropriate interface for this call. | |
2083 | * 1 = Call accepted | |
2084 | * 2 = Reject call, wait cbdelay, then call back | |
2085 | * 3 = Reject call | |
2086 | * 4 = Wait cbdelay, then call back | |
2087 | * 5 = No appropriate interface for this call, | |
2088 | * would eventually match if CID was longer. | |
2089 | */ | |
2090 | ||
2091 | int | |
2092 | isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup) | |
2093 | { | |
2094 | char *eaz; | |
2095 | int si1; | |
2096 | int si2; | |
2097 | int ematch; | |
2098 | int wret; | |
2099 | int swapped; | |
2100 | int sidx = 0; | |
2101 | u_long flags; | |
2102 | isdn_net_dev *p; | |
2103 | isdn_net_phone *n; | |
0f13864e | 2104 | char nr[ISDN_MSNLEN]; |
1da177e4 LT |
2105 | char *my_eaz; |
2106 | ||
2107 | /* Search name in netdev-chain */ | |
2108 | if (!setup->phone[0]) { | |
2109 | nr[0] = '0'; | |
2110 | nr[1] = '\0'; | |
2111 | printk(KERN_INFO "isdn_net: Incoming call without OAD, assuming '0'\n"); | |
2112 | } else | |
0f13864e | 2113 | strlcpy(nr, setup->phone, ISDN_MSNLEN); |
1da177e4 LT |
2114 | si1 = (int) setup->si1; |
2115 | si2 = (int) setup->si2; | |
2116 | if (!setup->eazmsn[0]) { | |
2117 | printk(KERN_WARNING "isdn_net: Incoming call without CPN, assuming '0'\n"); | |
2118 | eaz = "0"; | |
2119 | } else | |
2120 | eaz = setup->eazmsn; | |
2121 | if (dev->net_verbose > 1) | |
2122 | printk(KERN_INFO "isdn_net: call from %s,%d,%d -> %s\n", nr, si1, si2, eaz); | |
2123 | /* Accept DATA and VOICE calls at this stage | |
2124 | * local eaz is checked later for allowed call types | |
2125 | */ | |
2126 | if ((si1 != 7) && (si1 != 1)) { | |
2127 | if (dev->net_verbose > 1) | |
2128 | printk(KERN_INFO "isdn_net: Service-Indicator not 1 or 7, ignored\n"); | |
2129 | return 0; | |
2130 | } | |
2131 | n = (isdn_net_phone *) 0; | |
2132 | p = dev->netdev; | |
2133 | ematch = wret = swapped = 0; | |
2134 | #ifdef ISDN_DEBUG_NET_ICALL | |
2135 | printk(KERN_DEBUG "n_fi: di=%d ch=%d idx=%d usg=%d\n", di, ch, idx, | |
2136 | dev->usage[idx]); | |
2137 | #endif | |
2138 | while (p) { | |
2139 | int matchret; | |
2140 | isdn_net_local *lp = p->local; | |
2141 | ||
2142 | /* If last check has triggered as binding-swap, revert it */ | |
2143 | switch (swapped) { | |
2144 | case 2: | |
2145 | isdn_net_swap_usage(idx, sidx); | |
2146 | /* fall through */ | |
2147 | case 1: | |
2148 | isdn_net_swapbind(di); | |
2149 | break; | |
2150 | } | |
2151 | swapped = 0; | |
2152 | /* check acceptable call types for DOV */ | |
2153 | my_eaz = isdn_map_eaz2msn(lp->msn, di); | |
2154 | if (si1 == 1) { /* it's a DOV call, check if we allow it */ | |
2155 | if (*my_eaz == 'v' || *my_eaz == 'V' || | |
2156 | *my_eaz == 'b' || *my_eaz == 'B') | |
2157 | my_eaz++; /* skip to allow a match */ | |
2158 | else | |
2159 | my_eaz = NULL; /* force non match */ | |
2160 | } else { /* it's a DATA call, check if we allow it */ | |
2161 | if (*my_eaz == 'b' || *my_eaz == 'B') | |
2162 | my_eaz++; /* skip to allow a match */ | |
2163 | } | |
2164 | if (my_eaz) | |
2165 | matchret = isdn_msncmp(eaz, my_eaz); | |
2166 | else | |
2167 | matchret = 1; | |
2168 | if (!matchret) | |
2169 | ematch = 1; | |
2170 | ||
2171 | /* Remember if more numbers eventually can match */ | |
2172 | if (matchret > wret) | |
2173 | wret = matchret; | |
2174 | #ifdef ISDN_DEBUG_NET_ICALL | |
2175 | printk(KERN_DEBUG "n_fi: if='%s', l.msn=%s, l.flags=%d, l.dstate=%d\n", | |
faca94ff | 2176 | p->dev->name, lp->msn, lp->flags, lp->dialstate); |
1da177e4 LT |
2177 | #endif |
2178 | if ((!matchret) && /* EAZ is matching */ | |
2179 | (((!(lp->flags & ISDN_NET_CONNECTED)) && /* but not connected */ | |
2180 | (USG_NONE(dev->usage[idx]))) || /* and ch. unused or */ | |
2181 | ((((lp->dialstate == 4) || (lp->dialstate == 12)) && /* if dialing */ | |
2182 | (!(lp->flags & ISDN_NET_CALLBACK))) /* but no callback */ | |
2183 | ))) | |
2184 | { | |
2185 | #ifdef ISDN_DEBUG_NET_ICALL | |
2186 | printk(KERN_DEBUG "n_fi: match1, pdev=%d pch=%d\n", | |
2187 | lp->pre_device, lp->pre_channel); | |
2188 | #endif | |
2189 | if (dev->usage[idx] & ISDN_USAGE_EXCLUSIVE) { | |
2190 | if ((lp->pre_channel != ch) || | |
2191 | (lp->pre_device != di)) { | |
2192 | /* Here we got a problem: | |
2193 | * If using an ICN-Card, an incoming call is always signaled on | |
2194 | * on the first channel of the card, if both channels are | |
2195 | * down. However this channel may be bound exclusive. If the | |
2196 | * second channel is free, this call should be accepted. | |
2197 | * The solution is horribly but it runs, so what: | |
2198 | * We exchange the exclusive bindings of the two channels, the | |
2199 | * corresponding variables in the interface-structs. | |
2200 | */ | |
2201 | if (ch == 0) { | |
2202 | sidx = isdn_dc2minor(di, 1); | |
2203 | #ifdef ISDN_DEBUG_NET_ICALL | |
2204 | printk(KERN_DEBUG "n_fi: ch is 0\n"); | |
2205 | #endif | |
2206 | if (USG_NONE(dev->usage[sidx])) { | |
2207 | /* Second Channel is free, now see if it is bound | |
2208 | * exclusive too. */ | |
2209 | if (dev->usage[sidx] & ISDN_USAGE_EXCLUSIVE) { | |
2210 | #ifdef ISDN_DEBUG_NET_ICALL | |
2211 | printk(KERN_DEBUG "n_fi: 2nd channel is down and bound\n"); | |
2212 | #endif | |
2213 | /* Yes, swap bindings only, if the original | |
2214 | * binding is bound to channel 1 of this driver */ | |
2215 | if ((lp->pre_device == di) && | |
2216 | (lp->pre_channel == 1)) { | |
2217 | isdn_net_swapbind(di); | |
2218 | swapped = 1; | |
2219 | } else { | |
2220 | /* ... else iterate next device */ | |
2221 | p = (isdn_net_dev *) p->next; | |
2222 | continue; | |
2223 | } | |
2224 | } else { | |
2225 | #ifdef ISDN_DEBUG_NET_ICALL | |
2226 | printk(KERN_DEBUG "n_fi: 2nd channel is down and unbound\n"); | |
2227 | #endif | |
2228 | /* No, swap always and swap excl-usage also */ | |
2229 | isdn_net_swap_usage(idx, sidx); | |
2230 | isdn_net_swapbind(di); | |
2231 | swapped = 2; | |
2232 | } | |
2233 | /* Now check for exclusive binding again */ | |
2234 | #ifdef ISDN_DEBUG_NET_ICALL | |
2235 | printk(KERN_DEBUG "n_fi: final check\n"); | |
2236 | #endif | |
2237 | if ((dev->usage[idx] & ISDN_USAGE_EXCLUSIVE) && | |
2238 | ((lp->pre_channel != ch) || | |
2239 | (lp->pre_device != di))) { | |
2240 | #ifdef ISDN_DEBUG_NET_ICALL | |
2241 | printk(KERN_DEBUG "n_fi: final check failed\n"); | |
2242 | #endif | |
2243 | p = (isdn_net_dev *) p->next; | |
2244 | continue; | |
2245 | } | |
2246 | } | |
2247 | } else { | |
2248 | /* We are already on the second channel, so nothing to do */ | |
2249 | #ifdef ISDN_DEBUG_NET_ICALL | |
2250 | printk(KERN_DEBUG "n_fi: already on 2nd channel\n"); | |
2251 | #endif | |
2252 | } | |
2253 | } | |
2254 | } | |
2255 | #ifdef ISDN_DEBUG_NET_ICALL | |
2256 | printk(KERN_DEBUG "n_fi: match2\n"); | |
2257 | #endif | |
2258 | n = lp->phone[0]; | |
2259 | if (lp->flags & ISDN_NET_SECURE) { | |
2260 | while (n) { | |
2261 | if (!isdn_msncmp(nr, n->num)) | |
2262 | break; | |
2263 | n = (isdn_net_phone *) n->next; | |
2264 | } | |
2265 | } | |
2266 | if (n || (!(lp->flags & ISDN_NET_SECURE))) { | |
2267 | #ifdef ISDN_DEBUG_NET_ICALL | |
2268 | printk(KERN_DEBUG "n_fi: match3\n"); | |
2269 | #endif | |
2270 | /* matching interface found */ | |
2271 | ||
2272 | /* | |
2273 | * Is the state STOPPED? | |
2274 | * If so, no dialin is allowed, | |
2275 | * so reject actively. | |
2276 | * */ | |
2277 | if (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF) { | |
2278 | printk(KERN_INFO "incoming call, interface %s `stopped' -> rejected\n", | |
faca94ff | 2279 | p->dev->name); |
1da177e4 LT |
2280 | return 3; |
2281 | } | |
2282 | /* | |
2283 | * Is the interface up? | |
2284 | * If not, reject the call actively. | |
2285 | */ | |
2286 | if (!isdn_net_device_started(p)) { | |
2287 | printk(KERN_INFO "%s: incoming call, interface down -> rejected\n", | |
faca94ff | 2288 | p->dev->name); |
1da177e4 LT |
2289 | return 3; |
2290 | } | |
2291 | /* Interface is up, now see if it's a slave. If so, see if | |
2292 | * it's master and parent slave is online. If not, reject the call. | |
2293 | */ | |
2294 | if (lp->master) { | |
838361fe | 2295 | isdn_net_local *mlp = ISDN_MASTER_PRIV(lp); |
faca94ff KK |
2296 | printk(KERN_DEBUG "ICALLslv: %s\n", p->dev->name); |
2297 | printk(KERN_DEBUG "master=%s\n", lp->master->name); | |
1da177e4 LT |
2298 | if (mlp->flags & ISDN_NET_CONNECTED) { |
2299 | printk(KERN_DEBUG "master online\n"); | |
2300 | /* Master is online, find parent-slave (master if first slave) */ | |
2301 | while (mlp->slave) { | |
838361fe | 2302 | if (ISDN_SLAVE_PRIV(mlp) == lp) |
1da177e4 | 2303 | break; |
838361fe | 2304 | mlp = ISDN_SLAVE_PRIV(mlp); |
1da177e4 LT |
2305 | } |
2306 | } else | |
2307 | printk(KERN_DEBUG "master offline\n"); | |
2308 | /* Found parent, if it's offline iterate next device */ | |
2309 | printk(KERN_DEBUG "mlpf: %d\n", mlp->flags & ISDN_NET_CONNECTED); | |
2310 | if (!(mlp->flags & ISDN_NET_CONNECTED)) { | |
2311 | p = (isdn_net_dev *) p->next; | |
2312 | continue; | |
2313 | } | |
2314 | } | |
2315 | if (lp->flags & ISDN_NET_CALLBACK) { | |
2316 | int chi; | |
2317 | /* | |
2318 | * Is the state MANUAL? | |
2319 | * If so, no callback can be made, | |
2320 | * so reject actively. | |
2321 | * */ | |
2322 | if (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF) { | |
2323 | printk(KERN_INFO "incoming call for callback, interface %s `off' -> rejected\n", | |
faca94ff | 2324 | p->dev->name); |
1da177e4 LT |
2325 | return 3; |
2326 | } | |
2327 | printk(KERN_DEBUG "%s: call from %s -> %s, start callback\n", | |
faca94ff | 2328 | p->dev->name, nr, eaz); |
1da177e4 LT |
2329 | if (lp->phone[1]) { |
2330 | /* Grab a free ISDN-Channel */ | |
2331 | spin_lock_irqsave(&dev->lock, flags); | |
2332 | if ((chi = | |
2333 | isdn_get_free_channel( | |
2334 | ISDN_USAGE_NET, | |
2335 | lp->l2_proto, | |
2336 | lp->l3_proto, | |
2337 | lp->pre_device, | |
2338 | lp->pre_channel, | |
2339 | lp->msn) | |
2340 | ) < 0) { | |
2341 | ||
faca94ff KK |
2342 | printk(KERN_WARNING "isdn_net_find_icall: No channel for %s\n", |
2343 | p->dev->name); | |
1da177e4 LT |
2344 | spin_unlock_irqrestore(&dev->lock, flags); |
2345 | return 0; | |
2346 | } | |
2347 | /* Setup dialstate. */ | |
2348 | lp->dtimer = 0; | |
2349 | lp->dialstate = 11; | |
2350 | /* Connect interface with channel */ | |
2351 | isdn_net_bind_channel(lp, chi); | |
2352 | #ifdef CONFIG_ISDN_PPP | |
2353 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) | |
2354 | if (isdn_ppp_bind(lp) < 0) { | |
2355 | spin_unlock_irqrestore(&dev->lock, flags); | |
2356 | isdn_net_unbind_channel(lp); | |
2357 | return 0; | |
2358 | } | |
2359 | #endif | |
2360 | spin_unlock_irqrestore(&dev->lock, flags); | |
2361 | /* Initiate dialing by returning 2 or 4 */ | |
2362 | return (lp->flags & ISDN_NET_CBHUP) ? 2 : 4; | |
2363 | } else | |
faca94ff KK |
2364 | printk(KERN_WARNING "isdn_net: %s: No phone number\n", |
2365 | p->dev->name); | |
1da177e4 LT |
2366 | return 0; |
2367 | } else { | |
faca94ff KK |
2368 | printk(KERN_DEBUG "%s: call from %s -> %s accepted\n", |
2369 | p->dev->name, nr, eaz); | |
1da177e4 LT |
2370 | /* if this interface is dialing, it does it probably on a different |
2371 | device, so free this device */ | |
2372 | if ((lp->dialstate == 4) || (lp->dialstate == 12)) { | |
2373 | #ifdef CONFIG_ISDN_PPP | |
2374 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) | |
2375 | isdn_ppp_free(lp); | |
2376 | #endif | |
2377 | isdn_net_lp_disconnected(lp); | |
2378 | isdn_free_channel(lp->isdn_device, lp->isdn_channel, | |
2379 | ISDN_USAGE_NET); | |
2380 | } | |
2381 | spin_lock_irqsave(&dev->lock, flags); | |
2382 | dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE; | |
2383 | dev->usage[idx] |= ISDN_USAGE_NET; | |
2384 | strcpy(dev->num[idx], nr); | |
2385 | isdn_info_update(); | |
2386 | dev->st_netdev[idx] = lp->netdev; | |
2387 | lp->isdn_device = di; | |
2388 | lp->isdn_channel = ch; | |
2389 | lp->ppp_slot = -1; | |
2390 | lp->flags |= ISDN_NET_CONNECTED; | |
2391 | lp->dialstate = 7; | |
2392 | lp->dtimer = 0; | |
2393 | lp->outgoing = 0; | |
2394 | lp->huptimer = 0; | |
2395 | lp->hupflags |= ISDN_WAITCHARGE; | |
2396 | lp->hupflags &= ~ISDN_HAVECHARGE; | |
2397 | #ifdef CONFIG_ISDN_PPP | |
2398 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) { | |
2399 | if (isdn_ppp_bind(lp) < 0) { | |
2400 | isdn_net_unbind_channel(lp); | |
2401 | spin_unlock_irqrestore(&dev->lock, flags); | |
2402 | return 0; | |
2403 | } | |
2404 | } | |
2405 | #endif | |
2406 | spin_unlock_irqrestore(&dev->lock, flags); | |
2407 | return 1; | |
2408 | } | |
2409 | } | |
2410 | } | |
2411 | p = (isdn_net_dev *) p->next; | |
2412 | } | |
2413 | /* If none of configured EAZ/MSN matched and not verbose, be silent */ | |
2414 | if (!ematch || dev->net_verbose) | |
2415 | printk(KERN_INFO "isdn_net: call from %s -> %d %s ignored\n", nr, di, eaz); | |
2416 | return (wret == 2)?5:0; | |
2417 | } | |
2418 | ||
2419 | /* | |
2420 | * Search list of net-interfaces for an interface with given name. | |
2421 | */ | |
2422 | isdn_net_dev * | |
2423 | isdn_net_findif(char *name) | |
2424 | { | |
2425 | isdn_net_dev *p = dev->netdev; | |
2426 | ||
2427 | while (p) { | |
faca94ff | 2428 | if (!strcmp(p->dev->name, name)) |
1da177e4 LT |
2429 | return p; |
2430 | p = (isdn_net_dev *) p->next; | |
2431 | } | |
2432 | return (isdn_net_dev *) NULL; | |
2433 | } | |
2434 | ||
2435 | /* | |
2436 | * Force a net-interface to dial out. | |
2437 | * This is called from the userlevel-routine below or | |
2438 | * from isdn_net_start_xmit(). | |
2439 | */ | |
3e206b0a | 2440 | static int |
1da177e4 LT |
2441 | isdn_net_force_dial_lp(isdn_net_local * lp) |
2442 | { | |
2443 | if ((!(lp->flags & ISDN_NET_CONNECTED)) && !lp->dialstate) { | |
2444 | int chi; | |
2445 | if (lp->phone[1]) { | |
2446 | ulong flags; | |
2447 | ||
2448 | /* Grab a free ISDN-Channel */ | |
2449 | spin_lock_irqsave(&dev->lock, flags); | |
2450 | if ((chi = isdn_get_free_channel( | |
2451 | ISDN_USAGE_NET, | |
2452 | lp->l2_proto, | |
2453 | lp->l3_proto, | |
2454 | lp->pre_device, | |
2455 | lp->pre_channel, | |
2456 | lp->msn)) < 0) { | |
faca94ff KK |
2457 | printk(KERN_WARNING "isdn_net_force_dial: No channel for %s\n", |
2458 | lp->netdev->dev->name); | |
1da177e4 LT |
2459 | spin_unlock_irqrestore(&dev->lock, flags); |
2460 | return -EAGAIN; | |
2461 | } | |
2462 | lp->dialstate = 1; | |
2463 | /* Connect interface with channel */ | |
2464 | isdn_net_bind_channel(lp, chi); | |
2465 | #ifdef CONFIG_ISDN_PPP | |
2466 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) | |
2467 | if (isdn_ppp_bind(lp) < 0) { | |
2468 | isdn_net_unbind_channel(lp); | |
2469 | spin_unlock_irqrestore(&dev->lock, flags); | |
2470 | return -EAGAIN; | |
2471 | } | |
2472 | #endif | |
2473 | /* Initiate dialing */ | |
2474 | spin_unlock_irqrestore(&dev->lock, flags); | |
2475 | isdn_net_dial(); | |
2476 | return 0; | |
2477 | } else | |
2478 | return -EINVAL; | |
2479 | } else | |
2480 | return -EBUSY; | |
2481 | } | |
2482 | ||
2483 | /* | |
2484 | * This is called from certain upper protocol layers (multilink ppp | |
2485 | * and x25iface encapsulation module) that want to initiate dialing | |
2486 | * themselves. | |
2487 | */ | |
2488 | int | |
2489 | isdn_net_dial_req(isdn_net_local * lp) | |
2490 | { | |
2491 | /* is there a better error code? */ | |
2492 | if (!(ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_AUTO)) return -EBUSY; | |
2493 | ||
2494 | return isdn_net_force_dial_lp(lp); | |
2495 | } | |
2496 | ||
2497 | /* | |
2498 | * Force a net-interface to dial out. | |
2499 | * This is always called from within userspace (ISDN_IOCTL_NET_DIAL). | |
2500 | */ | |
2501 | int | |
2502 | isdn_net_force_dial(char *name) | |
2503 | { | |
2504 | isdn_net_dev *p = isdn_net_findif(name); | |
2505 | ||
2506 | if (!p) | |
2507 | return -ENODEV; | |
2508 | return (isdn_net_force_dial_lp(p->local)); | |
2509 | } | |
2510 | ||
d700555b SH |
2511 | /* The ISDN-specific entries in the device structure. */ |
2512 | static const struct net_device_ops isdn_netdev_ops = { | |
2513 | .ndo_init = isdn_net_init, | |
2514 | .ndo_open = isdn_net_open, | |
2515 | .ndo_stop = isdn_net_close, | |
2516 | .ndo_do_ioctl = isdn_net_ioctl, | |
2517 | ||
d700555b SH |
2518 | .ndo_start_xmit = isdn_net_start_xmit, |
2519 | .ndo_get_stats = isdn_net_get_stats, | |
2520 | .ndo_tx_timeout = isdn_net_tx_timeout, | |
2521 | }; | |
2522 | ||
d62a38d1 KK |
2523 | /* |
2524 | * Helper for alloc_netdev() | |
2525 | */ | |
2526 | static void _isdn_setup(struct net_device *dev) | |
2527 | { | |
838361fe | 2528 | isdn_net_local *lp = netdev_priv(dev); |
d62a38d1 | 2529 | |
d700555b SH |
2530 | ether_setup(dev); |
2531 | ||
d700555b | 2532 | /* Setup the generic properties */ |
d700555b | 2533 | dev->flags = IFF_NOARP|IFF_POINTOPOINT; |
d700555b SH |
2534 | dev->header_ops = NULL; |
2535 | dev->netdev_ops = &isdn_netdev_ops; | |
2536 | ||
2537 | /* for clients with MPPP maybe higher values better */ | |
2538 | dev->tx_queue_len = 30; | |
2539 | ||
d62a38d1 KK |
2540 | lp->p_encap = ISDN_NET_ENCAP_RAWIP; |
2541 | lp->magic = ISDN_NET_MAGIC; | |
2542 | lp->last = lp; | |
2543 | lp->next = lp; | |
2544 | lp->isdn_device = -1; | |
2545 | lp->isdn_channel = -1; | |
2546 | lp->pre_device = -1; | |
2547 | lp->pre_channel = -1; | |
2548 | lp->exclusive = -1; | |
2549 | lp->ppp_slot = -1; | |
2550 | lp->pppbind = -1; | |
2551 | skb_queue_head_init(&lp->super_tx_queue); | |
2552 | lp->l2_proto = ISDN_PROTO_L2_X75I; | |
2553 | lp->l3_proto = ISDN_PROTO_L3_TRANS; | |
2554 | lp->triggercps = 6000; | |
2555 | lp->slavedelay = 10 * HZ; | |
2556 | lp->hupflags = ISDN_INHUP; /* Do hangup even on incoming calls */ | |
2557 | lp->onhtime = 10; /* Default hangup-time for saving costs */ | |
2558 | lp->dialmax = 1; | |
2559 | /* Hangup before Callback, manual dial */ | |
2560 | lp->flags = ISDN_NET_CBHUP | ISDN_NET_DM_MANUAL; | |
2561 | lp->cbdelay = 25; /* Wait 5 secs before Callback */ | |
2562 | lp->dialtimeout = -1; /* Infinite Dial-Timeout */ | |
2563 | lp->dialwait = 5 * HZ; /* Wait 5 sec. after failed dial */ | |
2564 | lp->dialstarted = 0; /* Jiffies of last dial-start */ | |
2565 | lp->dialwait_timer = 0; /* Jiffies of earliest next dial-start */ | |
2566 | } | |
2567 | ||
1da177e4 LT |
2568 | /* |
2569 | * Allocate a new network-interface and initialize its data structures. | |
2570 | */ | |
2571 | char * | |
2572 | isdn_net_new(char *name, struct net_device *master) | |
2573 | { | |
2574 | isdn_net_dev *netdev; | |
2575 | ||
2576 | /* Avoid creating an existing interface */ | |
2577 | if (isdn_net_findif(name)) { | |
2578 | printk(KERN_WARNING "isdn_net: interface %s already exists\n", name); | |
2579 | return NULL; | |
2580 | } | |
d62a38d1 | 2581 | if (name == NULL) |
faca94ff | 2582 | return NULL; |
41f96935 | 2583 | if (!(netdev = kzalloc(sizeof(isdn_net_dev), GFP_KERNEL))) { |
1da177e4 LT |
2584 | printk(KERN_WARNING "isdn_net: Could not allocate net-device\n"); |
2585 | return NULL; | |
2586 | } | |
d62a38d1 KK |
2587 | netdev->dev = alloc_netdev(sizeof(isdn_net_local), name, _isdn_setup); |
2588 | if (!netdev->dev) { | |
2589 | printk(KERN_WARNING "isdn_net: Could not allocate network device\n"); | |
1da177e4 LT |
2590 | kfree(netdev); |
2591 | return NULL; | |
2592 | } | |
838361fe | 2593 | netdev->local = netdev_priv(netdev->dev); |
d700555b | 2594 | |
1da177e4 LT |
2595 | if (master) { |
2596 | /* Device shall be a slave */ | |
838361fe | 2597 | struct net_device *p = MASTER_TO_SLAVE(master); |
1da177e4 LT |
2598 | struct net_device *q = master; |
2599 | ||
2600 | netdev->local->master = master; | |
2601 | /* Put device at end of slave-chain */ | |
2602 | while (p) { | |
2603 | q = p; | |
838361fe | 2604 | p = MASTER_TO_SLAVE(p); |
1da177e4 | 2605 | } |
838361fe | 2606 | MASTER_TO_SLAVE(q) = netdev->dev; |
1da177e4 LT |
2607 | } else { |
2608 | /* Device shall be a master */ | |
2609 | /* | |
2610 | * Watchdog timer (currently) for master only. | |
2611 | */ | |
d62a38d1 KK |
2612 | netdev->dev->watchdog_timeo = ISDN_NET_TX_TIMEOUT; |
2613 | if (register_netdev(netdev->dev) != 0) { | |
1da177e4 | 2614 | printk(KERN_WARNING "isdn_net: Could not register net-device\n"); |
d62a38d1 | 2615 | free_netdev(netdev->dev); |
1da177e4 LT |
2616 | kfree(netdev); |
2617 | return NULL; | |
2618 | } | |
2619 | } | |
1da177e4 LT |
2620 | netdev->queue = netdev->local; |
2621 | spin_lock_init(&netdev->queue_lock); | |
2622 | ||
1da177e4 | 2623 | netdev->local->netdev = netdev; |
1da177e4 | 2624 | |
c4028958 | 2625 | INIT_WORK(&netdev->local->tqueue, isdn_net_softint); |
1da177e4 LT |
2626 | spin_lock_init(&netdev->local->xmit_lock); |
2627 | ||
1da177e4 LT |
2628 | /* Put into to netdev-chain */ |
2629 | netdev->next = (void *) dev->netdev; | |
2630 | dev->netdev = netdev; | |
d62a38d1 | 2631 | return netdev->dev->name; |
1da177e4 LT |
2632 | } |
2633 | ||
2634 | char * | |
2635 | isdn_net_newslave(char *parm) | |
2636 | { | |
2637 | char *p = strchr(parm, ','); | |
2638 | isdn_net_dev *n; | |
2639 | char newname[10]; | |
2640 | ||
2641 | if (p) { | |
2642 | /* Slave-Name MUST not be empty */ | |
2643 | if (!strlen(p + 1)) | |
2644 | return NULL; | |
2645 | strcpy(newname, p + 1); | |
2646 | *p = 0; | |
2647 | /* Master must already exist */ | |
2648 | if (!(n = isdn_net_findif(parm))) | |
2649 | return NULL; | |
2650 | /* Master must be a real interface, not a slave */ | |
2651 | if (n->local->master) | |
2652 | return NULL; | |
2653 | /* Master must not be started yet */ | |
2654 | if (isdn_net_device_started(n)) | |
2655 | return NULL; | |
d62a38d1 | 2656 | return (isdn_net_new(newname, n->dev)); |
1da177e4 LT |
2657 | } |
2658 | return NULL; | |
2659 | } | |
2660 | ||
2661 | /* | |
2662 | * Set interface-parameters. | |
2663 | * Always set all parameters, so the user-level application is responsible | |
2664 | * for not overwriting existing setups. It has to get the current | |
2665 | * setup first, if only selected parameters are to be changed. | |
2666 | */ | |
2667 | int | |
2668 | isdn_net_setcfg(isdn_net_ioctl_cfg * cfg) | |
2669 | { | |
2670 | isdn_net_dev *p = isdn_net_findif(cfg->name); | |
2671 | ulong features; | |
2672 | int i; | |
2673 | int drvidx; | |
2674 | int chidx; | |
2675 | char drvid[25]; | |
2676 | ||
2677 | if (p) { | |
2678 | isdn_net_local *lp = p->local; | |
2679 | ||
2680 | /* See if any registered driver supports the features we want */ | |
2681 | features = ((1 << cfg->l2_proto) << ISDN_FEATURE_L2_SHIFT) | | |
2682 | ((1 << cfg->l3_proto) << ISDN_FEATURE_L3_SHIFT); | |
2683 | for (i = 0; i < ISDN_MAX_DRIVERS; i++) | |
2684 | if (dev->drv[i]) | |
2685 | if ((dev->drv[i]->interface->features & features) == features) | |
2686 | break; | |
2687 | if (i == ISDN_MAX_DRIVERS) { | |
2688 | printk(KERN_WARNING "isdn_net: No driver with selected features\n"); | |
2689 | return -ENODEV; | |
2690 | } | |
2691 | if (lp->p_encap != cfg->p_encap){ | |
2692 | #ifdef CONFIG_ISDN_X25 | |
2693 | struct concap_proto * cprot = p -> cprot; | |
2694 | #endif | |
2695 | if (isdn_net_device_started(p)) { | |
2696 | printk(KERN_WARNING "%s: cannot change encap when if is up\n", | |
faca94ff | 2697 | p->dev->name); |
1da177e4 LT |
2698 | return -EBUSY; |
2699 | } | |
2700 | #ifdef CONFIG_ISDN_X25 | |
2701 | if( cprot && cprot -> pops ) | |
2702 | cprot -> pops -> proto_del ( cprot ); | |
2703 | p -> cprot = NULL; | |
2704 | lp -> dops = NULL; | |
2705 | /* ... , prepare for configuration of new one ... */ | |
2706 | switch ( cfg -> p_encap ){ | |
2707 | case ISDN_NET_ENCAP_X25IFACE: | |
2708 | lp -> dops = &isdn_concap_reliable_dl_dops; | |
2709 | } | |
2710 | /* ... and allocate new one ... */ | |
2711 | p -> cprot = isdn_concap_new( cfg -> p_encap ); | |
2712 | /* p -> cprot == NULL now if p_encap is not supported | |
2713 | by means of the concap_proto mechanism */ | |
2714 | /* the protocol is not configured yet; this will | |
2715 | happen later when isdn_net_reset() is called */ | |
2716 | #endif | |
2717 | } | |
2718 | switch ( cfg->p_encap ) { | |
2719 | case ISDN_NET_ENCAP_SYNCPPP: | |
2720 | #ifndef CONFIG_ISDN_PPP | |
2721 | printk(KERN_WARNING "%s: SyncPPP support not configured\n", | |
faca94ff | 2722 | p->dev->name); |
1da177e4 LT |
2723 | return -EINVAL; |
2724 | #else | |
d62a38d1 KK |
2725 | p->dev->type = ARPHRD_PPP; /* change ARP type */ |
2726 | p->dev->addr_len = 0; | |
1da177e4 LT |
2727 | #endif |
2728 | break; | |
2729 | case ISDN_NET_ENCAP_X25IFACE: | |
2730 | #ifndef CONFIG_ISDN_X25 | |
2731 | printk(KERN_WARNING "%s: isdn-x25 support not configured\n", | |
c749b013 | 2732 | p->dev->name); |
1da177e4 LT |
2733 | return -EINVAL; |
2734 | #else | |
d62a38d1 KK |
2735 | p->dev->type = ARPHRD_X25; /* change ARP type */ |
2736 | p->dev->addr_len = 0; | |
1da177e4 LT |
2737 | #endif |
2738 | break; | |
2739 | case ISDN_NET_ENCAP_CISCOHDLCK: | |
1da177e4 LT |
2740 | break; |
2741 | default: | |
2742 | if( cfg->p_encap >= 0 && | |
2743 | cfg->p_encap <= ISDN_NET_ENCAP_MAX_ENCAP ) | |
2744 | break; | |
2745 | printk(KERN_WARNING | |
2746 | "%s: encapsulation protocol %d not supported\n", | |
faca94ff | 2747 | p->dev->name, cfg->p_encap); |
1da177e4 LT |
2748 | return -EINVAL; |
2749 | } | |
2750 | if (strlen(cfg->drvid)) { | |
2751 | /* A bind has been requested ... */ | |
2752 | char *c, | |
2753 | *e; | |
2754 | ||
2755 | drvidx = -1; | |
2756 | chidx = -1; | |
2757 | strcpy(drvid, cfg->drvid); | |
2758 | if ((c = strchr(drvid, ','))) { | |
2759 | /* The channel-number is appended to the driver-Id with a comma */ | |
2760 | chidx = (int) simple_strtoul(c + 1, &e, 10); | |
2761 | if (e == c) | |
2762 | chidx = -1; | |
2763 | *c = '\0'; | |
2764 | } | |
2765 | for (i = 0; i < ISDN_MAX_DRIVERS; i++) | |
2766 | /* Lookup driver-Id in array */ | |
2767 | if (!(strcmp(dev->drvid[i], drvid))) { | |
2768 | drvidx = i; | |
2769 | break; | |
2770 | } | |
2771 | if ((drvidx == -1) || (chidx == -1)) | |
2772 | /* Either driver-Id or channel-number invalid */ | |
2773 | return -ENODEV; | |
2774 | } else { | |
2775 | /* Parameters are valid, so get them */ | |
2776 | drvidx = lp->pre_device; | |
2777 | chidx = lp->pre_channel; | |
2778 | } | |
2779 | if (cfg->exclusive > 0) { | |
2780 | unsigned long flags; | |
2781 | ||
2782 | /* If binding is exclusive, try to grab the channel */ | |
2783 | spin_lock_irqsave(&dev->lock, flags); | |
2784 | if ((i = isdn_get_free_channel(ISDN_USAGE_NET, | |
2785 | lp->l2_proto, lp->l3_proto, drvidx, | |
2786 | chidx, lp->msn)) < 0) { | |
2787 | /* Grab failed, because desired channel is in use */ | |
2788 | lp->exclusive = -1; | |
2789 | spin_unlock_irqrestore(&dev->lock, flags); | |
2790 | return -EBUSY; | |
2791 | } | |
2792 | /* All went ok, so update isdninfo */ | |
2793 | dev->usage[i] = ISDN_USAGE_EXCLUSIVE; | |
2794 | isdn_info_update(); | |
2795 | spin_unlock_irqrestore(&dev->lock, flags); | |
2796 | lp->exclusive = i; | |
2797 | } else { | |
2798 | /* Non-exclusive binding or unbind. */ | |
2799 | lp->exclusive = -1; | |
2800 | if ((lp->pre_device != -1) && (cfg->exclusive == -1)) { | |
2801 | isdn_unexclusive_channel(lp->pre_device, lp->pre_channel); | |
2802 | isdn_free_channel(lp->pre_device, lp->pre_channel, ISDN_USAGE_NET); | |
2803 | drvidx = -1; | |
2804 | chidx = -1; | |
2805 | } | |
2806 | } | |
0f13864e | 2807 | strlcpy(lp->msn, cfg->eaz, sizeof(lp->msn)); |
1da177e4 LT |
2808 | lp->pre_device = drvidx; |
2809 | lp->pre_channel = chidx; | |
2810 | lp->onhtime = cfg->onhtime; | |
2811 | lp->charge = cfg->charge; | |
2812 | lp->l2_proto = cfg->l2_proto; | |
2813 | lp->l3_proto = cfg->l3_proto; | |
2814 | lp->cbdelay = cfg->cbdelay; | |
2815 | lp->dialmax = cfg->dialmax; | |
2816 | lp->triggercps = cfg->triggercps; | |
2817 | lp->slavedelay = cfg->slavedelay * HZ; | |
2818 | lp->pppbind = cfg->pppbind; | |
2819 | lp->dialtimeout = cfg->dialtimeout >= 0 ? cfg->dialtimeout * HZ : -1; | |
2820 | lp->dialwait = cfg->dialwait * HZ; | |
2821 | if (cfg->secure) | |
2822 | lp->flags |= ISDN_NET_SECURE; | |
2823 | else | |
2824 | lp->flags &= ~ISDN_NET_SECURE; | |
2825 | if (cfg->cbhup) | |
2826 | lp->flags |= ISDN_NET_CBHUP; | |
2827 | else | |
2828 | lp->flags &= ~ISDN_NET_CBHUP; | |
2829 | switch (cfg->callback) { | |
2830 | case 0: | |
2831 | lp->flags &= ~(ISDN_NET_CALLBACK | ISDN_NET_CBOUT); | |
2832 | break; | |
2833 | case 1: | |
2834 | lp->flags |= ISDN_NET_CALLBACK; | |
2835 | lp->flags &= ~ISDN_NET_CBOUT; | |
2836 | break; | |
2837 | case 2: | |
2838 | lp->flags |= ISDN_NET_CBOUT; | |
2839 | lp->flags &= ~ISDN_NET_CALLBACK; | |
2840 | break; | |
2841 | } | |
2842 | lp->flags &= ~ISDN_NET_DIALMODE_MASK; /* first all bits off */ | |
2843 | if (cfg->dialmode && !(cfg->dialmode & ISDN_NET_DIALMODE_MASK)) { | |
2844 | /* old isdnctrl version, where only 0 or 1 is given */ | |
2845 | printk(KERN_WARNING | |
2846 | "Old isdnctrl version detected! Please update.\n"); | |
2847 | lp->flags |= ISDN_NET_DM_OFF; /* turn on `off' bit */ | |
2848 | } | |
2849 | else { | |
2850 | lp->flags |= cfg->dialmode; /* turn on selected bits */ | |
2851 | } | |
2852 | if (cfg->chargehup) | |
2853 | lp->hupflags |= ISDN_CHARGEHUP; | |
2854 | else | |
2855 | lp->hupflags &= ~ISDN_CHARGEHUP; | |
2856 | if (cfg->ihup) | |
2857 | lp->hupflags |= ISDN_INHUP; | |
2858 | else | |
2859 | lp->hupflags &= ~ISDN_INHUP; | |
2860 | if (cfg->chargeint > 10) { | |
2861 | lp->hupflags |= ISDN_CHARGEHUP | ISDN_HAVECHARGE | ISDN_MANCHARGE; | |
2862 | lp->chargeint = cfg->chargeint * HZ; | |
2863 | } | |
2864 | if (cfg->p_encap != lp->p_encap) { | |
2865 | if (cfg->p_encap == ISDN_NET_ENCAP_RAWIP) { | |
d62a38d1 KK |
2866 | p->dev->header_ops = NULL; |
2867 | p->dev->flags = IFF_NOARP|IFF_POINTOPOINT; | |
1da177e4 | 2868 | } else { |
d62a38d1 | 2869 | p->dev->header_ops = &isdn_header_ops; |
3b04ddde | 2870 | if (cfg->p_encap == ISDN_NET_ENCAP_ETHER) |
d62a38d1 | 2871 | p->dev->flags = IFF_BROADCAST | IFF_MULTICAST; |
3b04ddde | 2872 | else |
d62a38d1 | 2873 | p->dev->flags = IFF_NOARP|IFF_POINTOPOINT; |
1da177e4 LT |
2874 | } |
2875 | } | |
2876 | lp->p_encap = cfg->p_encap; | |
2877 | return 0; | |
2878 | } | |
2879 | return -ENODEV; | |
2880 | } | |
2881 | ||
2882 | /* | |
2883 | * Perform get-interface-parameters.ioctl | |
2884 | */ | |
2885 | int | |
2886 | isdn_net_getcfg(isdn_net_ioctl_cfg * cfg) | |
2887 | { | |
2888 | isdn_net_dev *p = isdn_net_findif(cfg->name); | |
2889 | ||
2890 | if (p) { | |
2891 | isdn_net_local *lp = p->local; | |
2892 | ||
2893 | strcpy(cfg->eaz, lp->msn); | |
2894 | cfg->exclusive = lp->exclusive; | |
2895 | if (lp->pre_device >= 0) { | |
2896 | sprintf(cfg->drvid, "%s,%d", dev->drvid[lp->pre_device], | |
2897 | lp->pre_channel); | |
2898 | } else | |
2899 | cfg->drvid[0] = '\0'; | |
2900 | cfg->onhtime = lp->onhtime; | |
2901 | cfg->charge = lp->charge; | |
2902 | cfg->l2_proto = lp->l2_proto; | |
2903 | cfg->l3_proto = lp->l3_proto; | |
2904 | cfg->p_encap = lp->p_encap; | |
2905 | cfg->secure = (lp->flags & ISDN_NET_SECURE) ? 1 : 0; | |
2906 | cfg->callback = 0; | |
2907 | if (lp->flags & ISDN_NET_CALLBACK) | |
2908 | cfg->callback = 1; | |
2909 | if (lp->flags & ISDN_NET_CBOUT) | |
2910 | cfg->callback = 2; | |
2911 | cfg->cbhup = (lp->flags & ISDN_NET_CBHUP) ? 1 : 0; | |
2912 | cfg->dialmode = lp->flags & ISDN_NET_DIALMODE_MASK; | |
2913 | cfg->chargehup = (lp->hupflags & 4) ? 1 : 0; | |
2914 | cfg->ihup = (lp->hupflags & 8) ? 1 : 0; | |
2915 | cfg->cbdelay = lp->cbdelay; | |
2916 | cfg->dialmax = lp->dialmax; | |
2917 | cfg->triggercps = lp->triggercps; | |
2918 | cfg->slavedelay = lp->slavedelay / HZ; | |
2919 | cfg->chargeint = (lp->hupflags & ISDN_CHARGEHUP) ? | |
2920 | (lp->chargeint / HZ) : 0; | |
2921 | cfg->pppbind = lp->pppbind; | |
2922 | cfg->dialtimeout = lp->dialtimeout >= 0 ? lp->dialtimeout / HZ : -1; | |
2923 | cfg->dialwait = lp->dialwait / HZ; | |
faca94ff KK |
2924 | if (lp->slave) { |
2925 | if (strlen(lp->slave->name) > 8) | |
2926 | strcpy(cfg->slave, "too-long"); | |
2927 | else | |
2928 | strcpy(cfg->slave, lp->slave->name); | |
2929 | } else | |
1da177e4 | 2930 | cfg->slave[0] = '\0'; |
faca94ff KK |
2931 | if (lp->master) { |
2932 | if (strlen(lp->master->name) > 8) | |
2933 | strcpy(cfg->master, "too-long"); | |
2934 | strcpy(cfg->master, lp->master->name); | |
2935 | } else | |
1da177e4 LT |
2936 | cfg->master[0] = '\0'; |
2937 | return 0; | |
2938 | } | |
2939 | return -ENODEV; | |
2940 | } | |
2941 | ||
2942 | /* | |
2943 | * Add a phone-number to an interface. | |
2944 | */ | |
2945 | int | |
2946 | isdn_net_addphone(isdn_net_ioctl_phone * phone) | |
2947 | { | |
2948 | isdn_net_dev *p = isdn_net_findif(phone->name); | |
2949 | isdn_net_phone *n; | |
2950 | ||
2951 | if (p) { | |
5cbded58 | 2952 | if (!(n = kmalloc(sizeof(isdn_net_phone), GFP_KERNEL))) |
1da177e4 | 2953 | return -ENOMEM; |
0f13864e | 2954 | strlcpy(n->num, phone->phone, sizeof(n->num)); |
1da177e4 LT |
2955 | n->next = p->local->phone[phone->outgoing & 1]; |
2956 | p->local->phone[phone->outgoing & 1] = n; | |
2957 | return 0; | |
2958 | } | |
2959 | return -ENODEV; | |
2960 | } | |
2961 | ||
2962 | /* | |
2963 | * Copy a string of all phone-numbers of an interface to user space. | |
2964 | * This might sleep and must be called with the isdn semaphore down. | |
2965 | */ | |
2966 | int | |
2967 | isdn_net_getphones(isdn_net_ioctl_phone * phone, char __user *phones) | |
2968 | { | |
2969 | isdn_net_dev *p = isdn_net_findif(phone->name); | |
2970 | int inout = phone->outgoing & 1; | |
2971 | int more = 0; | |
2972 | int count = 0; | |
2973 | isdn_net_phone *n; | |
2974 | ||
2975 | if (!p) | |
2976 | return -ENODEV; | |
2977 | inout &= 1; | |
2978 | for (n = p->local->phone[inout]; n; n = n->next) { | |
2979 | if (more) { | |
2980 | put_user(' ', phones++); | |
2981 | count++; | |
2982 | } | |
2983 | if (copy_to_user(phones, n->num, strlen(n->num) + 1)) { | |
2984 | return -EFAULT; | |
2985 | } | |
2986 | phones += strlen(n->num); | |
2987 | count += strlen(n->num); | |
2988 | more = 1; | |
2989 | } | |
2990 | put_user(0, phones); | |
2991 | count++; | |
2992 | return count; | |
2993 | } | |
2994 | ||
2995 | /* | |
2996 | * Copy a string containing the peer's phone number of a connected interface | |
2997 | * to user space. | |
2998 | */ | |
2999 | int | |
3000 | isdn_net_getpeer(isdn_net_ioctl_phone *phone, isdn_net_ioctl_phone __user *peer) | |
3001 | { | |
3002 | isdn_net_dev *p = isdn_net_findif(phone->name); | |
3003 | int ch, dv, idx; | |
3004 | ||
faca94ff KK |
3005 | if (!p) |
3006 | return -ENODEV; | |
1da177e4 LT |
3007 | /* |
3008 | * Theoretical race: while this executes, the remote number might | |
3009 | * become invalid (hang up) or change (new connection), resulting | |
3010 | * in (partially) wrong number copied to user. This race | |
3011 | * currently ignored. | |
3012 | */ | |
3013 | ch = p->local->isdn_channel; | |
3014 | dv = p->local->isdn_device; | |
faca94ff KK |
3015 | if(ch < 0 && dv < 0) |
3016 | return -ENOTCONN; | |
1da177e4 | 3017 | idx = isdn_dc2minor(dv, ch); |
faca94ff KK |
3018 | if (idx <0 ) |
3019 | return -ENODEV; | |
1da177e4 | 3020 | /* for pre-bound channels, we need this extra check */ |
faca94ff KK |
3021 | if (strncmp(dev->num[idx], "???", 3) == 0) |
3022 | return -ENOTCONN; | |
3023 | strncpy(phone->phone, dev->num[idx], ISDN_MSNLEN); | |
3024 | phone->outgoing = USG_OUTGOING(dev->usage[idx]); | |
3025 | if (copy_to_user(peer, phone, sizeof(*peer))) | |
3026 | return -EFAULT; | |
1da177e4 LT |
3027 | return 0; |
3028 | } | |
3029 | /* | |
3030 | * Delete a phone-number from an interface. | |
3031 | */ | |
3032 | int | |
3033 | isdn_net_delphone(isdn_net_ioctl_phone * phone) | |
3034 | { | |
3035 | isdn_net_dev *p = isdn_net_findif(phone->name); | |
3036 | int inout = phone->outgoing & 1; | |
3037 | isdn_net_phone *n; | |
3038 | isdn_net_phone *m; | |
3039 | ||
3040 | if (p) { | |
3041 | n = p->local->phone[inout]; | |
3042 | m = NULL; | |
3043 | while (n) { | |
3044 | if (!strcmp(n->num, phone->phone)) { | |
3045 | if (p->local->dial == n) | |
3046 | p->local->dial = n->next; | |
3047 | if (m) | |
3048 | m->next = n->next; | |
3049 | else | |
3050 | p->local->phone[inout] = n->next; | |
3051 | kfree(n); | |
3052 | return 0; | |
3053 | } | |
3054 | m = n; | |
3055 | n = (isdn_net_phone *) n->next; | |
3056 | } | |
3057 | return -EINVAL; | |
3058 | } | |
3059 | return -ENODEV; | |
3060 | } | |
3061 | ||
3062 | /* | |
3063 | * Delete all phone-numbers of an interface. | |
3064 | */ | |
3065 | static int | |
3066 | isdn_net_rmallphone(isdn_net_dev * p) | |
3067 | { | |
3068 | isdn_net_phone *n; | |
3069 | isdn_net_phone *m; | |
3070 | int i; | |
3071 | ||
3072 | for (i = 0; i < 2; i++) { | |
3073 | n = p->local->phone[i]; | |
3074 | while (n) { | |
3075 | m = n->next; | |
3076 | kfree(n); | |
3077 | n = m; | |
3078 | } | |
3079 | p->local->phone[i] = NULL; | |
3080 | } | |
3081 | p->local->dial = NULL; | |
3082 | return 0; | |
3083 | } | |
3084 | ||
3085 | /* | |
3086 | * Force a hangup of a network-interface. | |
3087 | */ | |
3088 | int | |
3089 | isdn_net_force_hangup(char *name) | |
3090 | { | |
3091 | isdn_net_dev *p = isdn_net_findif(name); | |
3092 | struct net_device *q; | |
3093 | ||
3094 | if (p) { | |
3095 | if (p->local->isdn_device < 0) | |
3096 | return 1; | |
3097 | q = p->local->slave; | |
3098 | /* If this interface has slaves, do a hangup for them also. */ | |
3099 | while (q) { | |
3100 | isdn_net_hangup(q); | |
838361fe | 3101 | q = MASTER_TO_SLAVE(q); |
1da177e4 | 3102 | } |
d62a38d1 | 3103 | isdn_net_hangup(p->dev); |
1da177e4 LT |
3104 | return 0; |
3105 | } | |
3106 | return -ENODEV; | |
3107 | } | |
3108 | ||
3109 | /* | |
3110 | * Helper-function for isdn_net_rm: Do the real work. | |
3111 | */ | |
3112 | static int | |
3113 | isdn_net_realrm(isdn_net_dev * p, isdn_net_dev * q) | |
3114 | { | |
3115 | u_long flags; | |
3116 | ||
3117 | if (isdn_net_device_started(p)) { | |
3118 | return -EBUSY; | |
3119 | } | |
3120 | #ifdef CONFIG_ISDN_X25 | |
3121 | if( p -> cprot && p -> cprot -> pops ) | |
3122 | p -> cprot -> pops -> proto_del ( p -> cprot ); | |
3123 | #endif | |
3124 | /* Free all phone-entries */ | |
3125 | isdn_net_rmallphone(p); | |
3126 | /* If interface is bound exclusive, free channel-usage */ | |
3127 | if (p->local->exclusive != -1) | |
3128 | isdn_unexclusive_channel(p->local->pre_device, p->local->pre_channel); | |
3129 | if (p->local->master) { | |
3130 | /* It's a slave-device, so update master's slave-pointer if necessary */ | |
838361fe WC |
3131 | if (((isdn_net_local *) ISDN_MASTER_PRIV(p->local))->slave == |
3132 | p->dev) | |
3133 | ((isdn_net_local *)ISDN_MASTER_PRIV(p->local))->slave = | |
3134 | p->local->slave; | |
1da177e4 LT |
3135 | } else { |
3136 | /* Unregister only if it's a master-device */ | |
d62a38d1 | 3137 | unregister_netdev(p->dev); |
1da177e4 LT |
3138 | } |
3139 | /* Unlink device from chain */ | |
3140 | spin_lock_irqsave(&dev->lock, flags); | |
3141 | if (q) | |
3142 | q->next = p->next; | |
3143 | else | |
3144 | dev->netdev = p->next; | |
3145 | if (p->local->slave) { | |
3146 | /* If this interface has a slave, remove it also */ | |
faca94ff | 3147 | char *slavename = p->local->slave->name; |
1da177e4 LT |
3148 | isdn_net_dev *n = dev->netdev; |
3149 | q = NULL; | |
3150 | while (n) { | |
faca94ff | 3151 | if (!strcmp(n->dev->name, slavename)) { |
1da177e4 LT |
3152 | spin_unlock_irqrestore(&dev->lock, flags); |
3153 | isdn_net_realrm(n, q); | |
3154 | spin_lock_irqsave(&dev->lock, flags); | |
3155 | break; | |
3156 | } | |
3157 | q = n; | |
faca94ff | 3158 | n = (isdn_net_dev *)n->next; |
1da177e4 LT |
3159 | } |
3160 | } | |
3161 | spin_unlock_irqrestore(&dev->lock, flags); | |
3162 | /* If no more net-devices remain, disable auto-hangup timer */ | |
3163 | if (dev->netdev == NULL) | |
3164 | isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 0); | |
d62a38d1 | 3165 | free_netdev(p->dev); |
1da177e4 LT |
3166 | kfree(p); |
3167 | ||
3168 | return 0; | |
3169 | } | |
3170 | ||
3171 | /* | |
3172 | * Remove a single network-interface. | |
3173 | */ | |
3174 | int | |
3175 | isdn_net_rm(char *name) | |
3176 | { | |
3177 | u_long flags; | |
3178 | isdn_net_dev *p; | |
3179 | isdn_net_dev *q; | |
3180 | ||
3181 | /* Search name in netdev-chain */ | |
3182 | spin_lock_irqsave(&dev->lock, flags); | |
3183 | p = dev->netdev; | |
3184 | q = NULL; | |
3185 | while (p) { | |
faca94ff | 3186 | if (!strcmp(p->dev->name, name)) { |
1da177e4 LT |
3187 | spin_unlock_irqrestore(&dev->lock, flags); |
3188 | return (isdn_net_realrm(p, q)); | |
3189 | } | |
3190 | q = p; | |
3191 | p = (isdn_net_dev *) p->next; | |
3192 | } | |
3193 | spin_unlock_irqrestore(&dev->lock, flags); | |
3194 | /* If no more net-devices remain, disable auto-hangup timer */ | |
3195 | if (dev->netdev == NULL) | |
3196 | isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 0); | |
3197 | return -ENODEV; | |
3198 | } | |
3199 | ||
3200 | /* | |
3201 | * Remove all network-interfaces | |
3202 | */ | |
3203 | int | |
3204 | isdn_net_rmall(void) | |
3205 | { | |
3206 | u_long flags; | |
3207 | int ret; | |
3208 | ||
3209 | /* Walk through netdev-chain */ | |
3210 | spin_lock_irqsave(&dev->lock, flags); | |
3211 | while (dev->netdev) { | |
3212 | if (!dev->netdev->local->master) { | |
3213 | /* Remove master-devices only, slaves get removed with their master */ | |
3214 | spin_unlock_irqrestore(&dev->lock, flags); | |
3215 | if ((ret = isdn_net_realrm(dev->netdev, NULL))) { | |
3216 | return ret; | |
3217 | } | |
3218 | spin_lock_irqsave(&dev->lock, flags); | |
3219 | } | |
3220 | } | |
3221 | dev->netdev = NULL; | |
3222 | spin_unlock_irqrestore(&dev->lock, flags); | |
3223 | return 0; | |
3224 | } |