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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 | * | |
475be4d8 | 12 | * Data Over Voice (DOV) support added - Guy Ellis 23-Mar-02 |
1da177e4 LT |
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> | |
475be4d8 | 21 | * for info on the protocol, see |
1da177e4 LT |
22 | * http://i4l.zabbadoz.net/i4l/cisco-hdlc.txt |
23 | */ | |
24 | ||
1da177e4 | 25 | #include <linux/isdn.h> |
5a0e3ad6 | 26 | #include <linux/slab.h> |
1da177e4 LT |
27 | #include <net/arp.h> |
28 | #include <net/dst.h> | |
29 | #include <net/pkt_sched.h> | |
30 | #include <linux/inetdevice.h> | |
31 | #include "isdn_common.h" | |
32 | #include "isdn_net.h" | |
33 | #ifdef CONFIG_ISDN_PPP | |
34 | #include "isdn_ppp.h" | |
35 | #endif | |
36 | #ifdef CONFIG_ISDN_X25 | |
37 | #include <linux/concap.h> | |
38 | #include "isdn_concap.h" | |
39 | #endif | |
40 | ||
41 | ||
42 | /* | |
475be4d8 | 43 | * Outline of new tbusy handling: |
1da177e4 LT |
44 | * |
45 | * Old method, roughly spoken, consisted of setting tbusy when entering | |
46 | * isdn_net_start_xmit() and at several other locations and clearing | |
47 | * it from isdn_net_start_xmit() thread when sending was successful. | |
48 | * | |
49 | * With 2.3.x multithreaded network core, to prevent problems, tbusy should | |
50 | * only be set by the isdn_net_start_xmit() thread and only when a tx-busy | |
51 | * condition is detected. Other threads (in particular isdn_net_stat_callb()) | |
52 | * are only allowed to clear tbusy. | |
53 | * | |
54 | * -HE | |
55 | */ | |
56 | ||
57 | /* | |
58 | * About SOFTNET: | |
59 | * Most of the changes were pretty obvious and basically done by HE already. | |
60 | * | |
3c7f3092 | 61 | * One problem of the isdn net device code is that it uses struct net_device |
475be4d8 JP |
62 | * for masters and slaves. However, only master interface are registered to |
63 | * the network layer, and therefore, it only makes sense to call netif_* | |
1da177e4 LT |
64 | * functions on them. |
65 | * | |
66 | * --KG | |
67 | */ | |
68 | ||
475be4d8 | 69 | /* |
1da177e4 LT |
70 | * Find out if the netdevice has been ifup-ed yet. |
71 | * For slaves, look at the corresponding master. | |
72 | */ | |
73 | static __inline__ int isdn_net_device_started(isdn_net_dev *n) | |
74 | { | |
75 | isdn_net_local *lp = n->local; | |
76 | struct net_device *dev; | |
475be4d8 JP |
77 | |
78 | if (lp->master) | |
1da177e4 LT |
79 | dev = lp->master; |
80 | else | |
d62a38d1 | 81 | dev = n->dev; |
1da177e4 LT |
82 | return netif_running(dev); |
83 | } | |
84 | ||
85 | /* | |
86 | * wake up the network -> net_device queue. | |
87 | * For slaves, wake the corresponding master interface. | |
88 | */ | |
89 | static __inline__ void isdn_net_device_wake_queue(isdn_net_local *lp) | |
90 | { | |
475be4d8 | 91 | if (lp->master) |
1da177e4 LT |
92 | netif_wake_queue(lp->master); |
93 | else | |
d62a38d1 | 94 | netif_wake_queue(lp->netdev->dev); |
1da177e4 LT |
95 | } |
96 | ||
97 | /* | |
98 | * stop the network -> net_device queue. | |
99 | * For slaves, stop the corresponding master interface. | |
100 | */ | |
101 | static __inline__ void isdn_net_device_stop_queue(isdn_net_local *lp) | |
102 | { | |
103 | if (lp->master) | |
104 | netif_stop_queue(lp->master); | |
105 | else | |
d62a38d1 | 106 | netif_stop_queue(lp->netdev->dev); |
1da177e4 LT |
107 | } |
108 | ||
109 | /* | |
110 | * find out if the net_device which this lp belongs to (lp can be | |
475be4d8 | 111 | * master or slave) is busy. It's busy iff all (master and slave) |
1da177e4 LT |
112 | * queues are busy |
113 | */ | |
114 | static __inline__ int isdn_net_device_busy(isdn_net_local *lp) | |
115 | { | |
116 | isdn_net_local *nlp; | |
117 | isdn_net_dev *nd; | |
118 | unsigned long flags; | |
119 | ||
120 | if (!isdn_net_lp_busy(lp)) | |
121 | return 0; | |
122 | ||
123 | if (lp->master) | |
838361fe | 124 | nd = ISDN_MASTER_PRIV(lp)->netdev; |
1da177e4 LT |
125 | else |
126 | nd = lp->netdev; | |
475be4d8 | 127 | |
1da177e4 LT |
128 | spin_lock_irqsave(&nd->queue_lock, flags); |
129 | nlp = lp->next; | |
130 | while (nlp != lp) { | |
131 | if (!isdn_net_lp_busy(nlp)) { | |
132 | spin_unlock_irqrestore(&nd->queue_lock, flags); | |
133 | return 0; | |
134 | } | |
135 | nlp = nlp->next; | |
136 | } | |
137 | spin_unlock_irqrestore(&nd->queue_lock, flags); | |
138 | return 1; | |
139 | } | |
140 | ||
141 | static __inline__ void isdn_net_inc_frame_cnt(isdn_net_local *lp) | |
142 | { | |
143 | atomic_inc(&lp->frame_cnt); | |
144 | if (isdn_net_device_busy(lp)) | |
145 | isdn_net_device_stop_queue(lp); | |
146 | } | |
147 | ||
148 | static __inline__ void isdn_net_dec_frame_cnt(isdn_net_local *lp) | |
149 | { | |
150 | atomic_dec(&lp->frame_cnt); | |
151 | ||
152 | if (!(isdn_net_device_busy(lp))) { | |
153 | if (!skb_queue_empty(&lp->super_tx_queue)) { | |
154 | schedule_work(&lp->tqueue); | |
155 | } else { | |
156 | isdn_net_device_wake_queue(lp); | |
157 | } | |
475be4d8 | 158 | } |
1da177e4 LT |
159 | } |
160 | ||
161 | static __inline__ void isdn_net_zero_frame_cnt(isdn_net_local *lp) | |
162 | { | |
163 | atomic_set(&lp->frame_cnt, 0); | |
164 | } | |
165 | ||
475be4d8 | 166 | /* For 2.2.x we leave the transmitter busy timeout at 2 secs, just |
1da177e4 LT |
167 | * to be safe. |
168 | * For 2.3.x we push it up to 20 secs, because call establishment | |
475be4d8 | 169 | * (in particular callback) may take such a long time, and we |
1da177e4 LT |
170 | * don't want confusing messages in the log. However, there is a slight |
171 | * possibility that this large timeout will break other things like MPPP, | |
172 | * which might rely on the tx timeout. If so, we'll find out this way... | |
173 | */ | |
174 | ||
475be4d8 | 175 | #define ISDN_NET_TX_TIMEOUT (20 * HZ) |
1da177e4 LT |
176 | |
177 | /* Prototypes */ | |
178 | ||
3e206b0a | 179 | static int isdn_net_force_dial_lp(isdn_net_local *); |
8b62ff2d | 180 | static netdev_tx_t isdn_net_start_xmit(struct sk_buff *, |
475be4d8 | 181 | struct net_device *); |
1da177e4 LT |
182 | |
183 | static void isdn_net_ciscohdlck_connected(isdn_net_local *lp); | |
184 | static void isdn_net_ciscohdlck_disconnected(isdn_net_local *lp); | |
185 | ||
186 | char *isdn_net_revision = "$Revision: 1.1.2.2 $"; | |
187 | ||
475be4d8 JP |
188 | /* |
189 | * Code for raw-networking over ISDN | |
190 | */ | |
1da177e4 LT |
191 | |
192 | static void | |
193 | isdn_net_unreachable(struct net_device *dev, struct sk_buff *skb, char *reason) | |
194 | { | |
475be4d8 | 195 | if (skb) { |
1da177e4 LT |
196 | |
197 | u_short proto = ntohs(skb->protocol); | |
198 | ||
199 | printk(KERN_DEBUG "isdn_net: %s: %s, signalling dst_link_failure %s\n", | |
200 | dev->name, | |
201 | (reason != NULL) ? reason : "unknown", | |
202 | (proto != ETH_P_IP) ? "Protocol != ETH_P_IP" : ""); | |
475be4d8 | 203 | |
1da177e4 LT |
204 | dst_link_failure(skb); |
205 | } | |
206 | else { /* dial not triggered by rawIP packet */ | |
207 | printk(KERN_DEBUG "isdn_net: %s: %s\n", | |
475be4d8 JP |
208 | dev->name, |
209 | (reason != NULL) ? reason : "reason unknown"); | |
1da177e4 LT |
210 | } |
211 | } | |
212 | ||
213 | static void | |
214 | isdn_net_reset(struct net_device *dev) | |
215 | { | |
216 | #ifdef CONFIG_ISDN_X25 | |
475be4d8 JP |
217 | struct concap_device_ops *dops = |
218 | ((isdn_net_local *)netdev_priv(dev))->dops; | |
219 | struct concap_proto *cprot = | |
220 | ((isdn_net_local *)netdev_priv(dev))->netdev->cprot; | |
1da177e4 LT |
221 | #endif |
222 | #ifdef CONFIG_ISDN_X25 | |
475be4d8 JP |
223 | if (cprot && cprot->pops && dops) |
224 | cprot->pops->restart(cprot, dev, dops); | |
1da177e4 LT |
225 | #endif |
226 | } | |
227 | ||
228 | /* Open/initialize the board. */ | |
229 | static int | |
230 | isdn_net_open(struct net_device *dev) | |
231 | { | |
232 | int i; | |
233 | struct net_device *p; | |
234 | struct in_device *in_dev; | |
235 | ||
236 | /* moved here from isdn_net_reset, because only the master has an | |
237 | interface associated which is supposed to be started. BTW: | |
238 | we need to call netif_start_queue, not netif_wake_queue here */ | |
239 | netif_start_queue(dev); | |
240 | ||
241 | isdn_net_reset(dev); | |
242 | /* Fill in the MAC-level header (not needed, but for compatibility... */ | |
243 | for (i = 0; i < ETH_ALEN - sizeof(u32); i++) | |
244 | dev->dev_addr[i] = 0xfc; | |
245 | if ((in_dev = dev->ip_ptr) != NULL) { | |
246 | /* | |
247 | * Any address will do - we take the first | |
248 | */ | |
249 | struct in_ifaddr *ifa = in_dev->ifa_list; | |
250 | if (ifa != NULL) | |
475be4d8 | 251 | memcpy(dev->dev_addr + 2, &ifa->ifa_local, 4); |
1da177e4 LT |
252 | } |
253 | ||
254 | /* If this interface has slaves, start them also */ | |
838361fe WC |
255 | p = MASTER_TO_SLAVE(dev); |
256 | if (p) { | |
1da177e4 LT |
257 | while (p) { |
258 | isdn_net_reset(p); | |
838361fe | 259 | p = MASTER_TO_SLAVE(p); |
1da177e4 LT |
260 | } |
261 | } | |
262 | isdn_lock_drivers(); | |
263 | return 0; | |
264 | } | |
265 | ||
266 | /* | |
267 | * Assign an ISDN-channel to a net-interface | |
268 | */ | |
269 | static void | |
475be4d8 | 270 | isdn_net_bind_channel(isdn_net_local *lp, int idx) |
1da177e4 LT |
271 | { |
272 | lp->flags |= ISDN_NET_CONNECTED; | |
273 | lp->isdn_device = dev->drvmap[idx]; | |
274 | lp->isdn_channel = dev->chanmap[idx]; | |
275 | dev->rx_netdev[idx] = lp->netdev; | |
276 | dev->st_netdev[idx] = lp->netdev; | |
277 | } | |
278 | ||
279 | /* | |
280 | * unbind a net-interface (resets interface after an error) | |
281 | */ | |
282 | static void | |
475be4d8 | 283 | isdn_net_unbind_channel(isdn_net_local *lp) |
1da177e4 LT |
284 | { |
285 | skb_queue_purge(&lp->super_tx_queue); | |
286 | ||
287 | if (!lp->master) { /* reset only master device */ | |
288 | /* Moral equivalent of dev_purge_queues(): | |
289 | BEWARE! This chunk of code cannot be called from hardware | |
290 | interrupt handler. I hope it is true. --ANK | |
475be4d8 | 291 | */ |
5aa70995 | 292 | qdisc_reset_all_tx(lp->netdev->dev); |
1da177e4 LT |
293 | } |
294 | lp->dialstate = 0; | |
295 | dev->rx_netdev[isdn_dc2minor(lp->isdn_device, lp->isdn_channel)] = NULL; | |
296 | dev->st_netdev[isdn_dc2minor(lp->isdn_device, lp->isdn_channel)] = NULL; | |
bae58431 PB |
297 | if (lp->isdn_device != -1 && lp->isdn_channel != -1) |
298 | isdn_free_channel(lp->isdn_device, lp->isdn_channel, | |
299 | ISDN_USAGE_NET); | |
1da177e4 LT |
300 | lp->flags &= ~ISDN_NET_CONNECTED; |
301 | lp->isdn_device = -1; | |
302 | lp->isdn_channel = -1; | |
303 | } | |
304 | ||
305 | /* | |
306 | * Perform auto-hangup and cps-calculation for net-interfaces. | |
307 | * | |
308 | * auto-hangup: | |
309 | * Increment idle-counter (this counter is reset on any incoming or | |
310 | * outgoing packet), if counter exceeds configured limit either do a | |
311 | * hangup immediately or - if configured - wait until just before the next | |
312 | * charge-info. | |
313 | * | |
314 | * cps-calculation (needed for dynamic channel-bundling): | |
315 | * Since this function is called every second, simply reset the | |
316 | * byte-counter of the interface after copying it to the cps-variable. | |
317 | */ | |
3e206b0a | 318 | static unsigned long last_jiffies = -HZ; |
1da177e4 LT |
319 | |
320 | void | |
321 | isdn_net_autohup(void) | |
322 | { | |
323 | isdn_net_dev *p = dev->netdev; | |
324 | int anymore; | |
325 | ||
326 | anymore = 0; | |
327 | while (p) { | |
328 | isdn_net_local *l = p->local; | |
329 | if (jiffies == last_jiffies) | |
330 | l->cps = l->transcount; | |
331 | else | |
332 | l->cps = (l->transcount * HZ) / (jiffies - last_jiffies); | |
333 | l->transcount = 0; | |
334 | if (dev->net_verbose > 3) | |
faca94ff | 335 | printk(KERN_DEBUG "%s: %d bogocps\n", p->dev->name, l->cps); |
1da177e4 LT |
336 | if ((l->flags & ISDN_NET_CONNECTED) && (!l->dialstate)) { |
337 | anymore = 1; | |
338 | l->huptimer++; | |
339 | /* | |
340 | * if there is some dialmode where timeout-hangup | |
341 | * should _not_ be done, check for that here | |
342 | */ | |
343 | if ((l->onhtime) && | |
344 | (l->huptimer > l->onhtime)) | |
345 | { | |
346 | if (l->hupflags & ISDN_MANCHARGE && | |
347 | l->hupflags & ISDN_CHARGEHUP) { | |
348 | while (time_after(jiffies, l->chargetime + l->chargeint)) | |
349 | l->chargetime += l->chargeint; | |
350 | if (time_after(jiffies, l->chargetime + l->chargeint - 2 * HZ)) | |
351 | if (l->outgoing || l->hupflags & ISDN_INHUP) | |
d62a38d1 | 352 | isdn_net_hangup(p->dev); |
1da177e4 LT |
353 | } else if (l->outgoing) { |
354 | if (l->hupflags & ISDN_CHARGEHUP) { | |
355 | if (l->hupflags & ISDN_WAITCHARGE) { | |
356 | printk(KERN_DEBUG "isdn_net: Hupflags of %s are %X\n", | |
faca94ff | 357 | p->dev->name, l->hupflags); |
d62a38d1 | 358 | isdn_net_hangup(p->dev); |
1da177e4 LT |
359 | } else if (time_after(jiffies, l->chargetime + l->chargeint)) { |
360 | printk(KERN_DEBUG | |
361 | "isdn_net: %s: chtime = %lu, chint = %d\n", | |
faca94ff | 362 | p->dev->name, l->chargetime, l->chargeint); |
d62a38d1 | 363 | isdn_net_hangup(p->dev); |
1da177e4 LT |
364 | } |
365 | } else | |
d62a38d1 | 366 | isdn_net_hangup(p->dev); |
1da177e4 | 367 | } else if (l->hupflags & ISDN_INHUP) |
d62a38d1 | 368 | isdn_net_hangup(p->dev); |
1da177e4 LT |
369 | } |
370 | ||
475be4d8 | 371 | if (dev->global_flags & ISDN_GLOBAL_STOPPED || (ISDN_NET_DIALMODE(*l) == ISDN_NET_DM_OFF)) { |
d62a38d1 | 372 | isdn_net_hangup(p->dev); |
1da177e4 LT |
373 | break; |
374 | } | |
375 | } | |
376 | p = (isdn_net_dev *) p->next; | |
377 | } | |
378 | last_jiffies = jiffies; | |
379 | isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, anymore); | |
380 | } | |
381 | ||
382 | static void isdn_net_lp_disconnected(isdn_net_local *lp) | |
383 | { | |
384 | isdn_net_rm_from_bundle(lp); | |
385 | } | |
386 | ||
387 | /* | |
388 | * Handle status-messages from ISDN-interfacecard. | |
389 | * This function is called from within the main-status-dispatcher | |
390 | * isdn_status_callback, which itself is called from the low-level driver. | |
391 | * Return: 1 = Event handled, 0 = not for us or unknown Event. | |
392 | */ | |
393 | int | |
394 | isdn_net_stat_callback(int idx, isdn_ctrl *c) | |
395 | { | |
396 | isdn_net_dev *p = dev->st_netdev[idx]; | |
397 | int cmd = c->command; | |
398 | ||
399 | if (p) { | |
400 | isdn_net_local *lp = p->local; | |
401 | #ifdef CONFIG_ISDN_X25 | |
402 | struct concap_proto *cprot = lp->netdev->cprot; | |
403 | struct concap_proto_ops *pops = cprot ? cprot->pops : NULL; | |
404 | #endif | |
405 | switch (cmd) { | |
475be4d8 JP |
406 | case ISDN_STAT_BSENT: |
407 | /* A packet has successfully been sent out */ | |
408 | if ((lp->flags & ISDN_NET_CONNECTED) && | |
409 | (!lp->dialstate)) { | |
410 | isdn_net_dec_frame_cnt(lp); | |
411 | lp->stats.tx_packets++; | |
412 | lp->stats.tx_bytes += c->parm.length; | |
413 | } | |
414 | return 1; | |
415 | case ISDN_STAT_DCONN: | |
416 | /* D-Channel is up */ | |
417 | switch (lp->dialstate) { | |
418 | case 4: | |
419 | case 7: | |
420 | case 8: | |
421 | lp->dialstate++; | |
1da177e4 | 422 | return 1; |
475be4d8 JP |
423 | case 12: |
424 | lp->dialstate = 5; | |
425 | return 1; | |
426 | } | |
427 | break; | |
428 | case ISDN_STAT_DHUP: | |
429 | /* Either D-Channel-hangup or error during dialout */ | |
1da177e4 | 430 | #ifdef CONFIG_ISDN_X25 |
475be4d8 JP |
431 | /* If we are not connencted then dialing had |
432 | failed. If there are generic encap protocol | |
433 | receiver routines signal the closure of | |
434 | the link*/ | |
435 | ||
436 | if (!(lp->flags & ISDN_NET_CONNECTED) | |
437 | && pops && pops->disconn_ind) | |
438 | pops->disconn_ind(cprot); | |
1da177e4 | 439 | #endif /* CONFIG_ISDN_X25 */ |
475be4d8 JP |
440 | if ((!lp->dialstate) && (lp->flags & ISDN_NET_CONNECTED)) { |
441 | if (lp->p_encap == ISDN_NET_ENCAP_CISCOHDLCK) | |
442 | isdn_net_ciscohdlck_disconnected(lp); | |
1da177e4 | 443 | #ifdef CONFIG_ISDN_PPP |
475be4d8 JP |
444 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) |
445 | isdn_ppp_free(lp); | |
1da177e4 | 446 | #endif |
475be4d8 JP |
447 | isdn_net_lp_disconnected(lp); |
448 | isdn_all_eaz(lp->isdn_device, lp->isdn_channel); | |
449 | printk(KERN_INFO "%s: remote hangup\n", p->dev->name); | |
450 | printk(KERN_INFO "%s: Chargesum is %d\n", p->dev->name, | |
451 | lp->charge); | |
452 | isdn_net_unbind_channel(lp); | |
453 | return 1; | |
454 | } | |
455 | break; | |
1da177e4 | 456 | #ifdef CONFIG_ISDN_X25 |
475be4d8 JP |
457 | case ISDN_STAT_BHUP: |
458 | /* B-Channel-hangup */ | |
459 | /* try if there are generic encap protocol | |
460 | receiver routines and signal the closure of | |
461 | the link */ | |
462 | if (pops && pops->disconn_ind) { | |
463 | pops->disconn_ind(cprot); | |
464 | return 1; | |
465 | } | |
466 | break; | |
1da177e4 | 467 | #endif /* CONFIG_ISDN_X25 */ |
475be4d8 JP |
468 | case ISDN_STAT_BCONN: |
469 | /* B-Channel is up */ | |
470 | isdn_net_zero_frame_cnt(lp); | |
471 | switch (lp->dialstate) { | |
472 | case 5: | |
473 | case 6: | |
474 | case 7: | |
475 | case 8: | |
476 | case 9: | |
477 | case 10: | |
478 | case 12: | |
479 | if (lp->dialstate <= 6) { | |
480 | dev->usage[idx] |= ISDN_USAGE_OUTGOING; | |
481 | isdn_info_update(); | |
482 | } else | |
483 | dev->rx_netdev[idx] = p; | |
484 | lp->dialstate = 0; | |
485 | isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 1); | |
486 | if (lp->p_encap == ISDN_NET_ENCAP_CISCOHDLCK) | |
487 | isdn_net_ciscohdlck_connected(lp); | |
488 | if (lp->p_encap != ISDN_NET_ENCAP_SYNCPPP) { | |
489 | if (lp->master) { /* is lp a slave? */ | |
490 | isdn_net_dev *nd = ISDN_MASTER_PRIV(lp)->netdev; | |
491 | isdn_net_add_to_bundle(nd, lp); | |
492 | } | |
493 | } | |
494 | printk(KERN_INFO "isdn_net: %s connected\n", p->dev->name); | |
495 | /* If first Chargeinfo comes before B-Channel connect, | |
496 | * we correct the timestamp here. | |
497 | */ | |
498 | lp->chargetime = jiffies; | |
1da177e4 | 499 | |
475be4d8 JP |
500 | /* reset dial-timeout */ |
501 | lp->dialstarted = 0; | |
502 | lp->dialwait_timer = 0; | |
1da177e4 LT |
503 | |
504 | #ifdef CONFIG_ISDN_PPP | |
475be4d8 JP |
505 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) |
506 | isdn_ppp_wakeup_daemon(lp); | |
1da177e4 LT |
507 | #endif |
508 | #ifdef CONFIG_ISDN_X25 | |
475be4d8 JP |
509 | /* try if there are generic concap receiver routines */ |
510 | if (pops) | |
511 | if (pops->connect_ind) | |
512 | pops->connect_ind(cprot); | |
1da177e4 | 513 | #endif /* CONFIG_ISDN_X25 */ |
475be4d8 JP |
514 | /* ppp needs to do negotiations first */ |
515 | if (lp->p_encap != ISDN_NET_ENCAP_SYNCPPP) | |
516 | isdn_net_device_wake_queue(lp); | |
1da177e4 | 517 | return 1; |
475be4d8 JP |
518 | } |
519 | break; | |
520 | case ISDN_STAT_NODCH: | |
521 | /* No D-Channel avail. */ | |
522 | if (lp->dialstate == 4) { | |
523 | lp->dialstate--; | |
524 | return 1; | |
525 | } | |
526 | break; | |
527 | case ISDN_STAT_CINF: | |
528 | /* Charge-info from TelCo. Calculate interval between | |
529 | * charge-infos and set timestamp for last info for | |
530 | * usage by isdn_net_autohup() | |
531 | */ | |
532 | lp->charge++; | |
533 | if (lp->hupflags & ISDN_HAVECHARGE) { | |
534 | lp->hupflags &= ~ISDN_WAITCHARGE; | |
535 | lp->chargeint = jiffies - lp->chargetime - (2 * HZ); | |
536 | } | |
537 | if (lp->hupflags & ISDN_WAITCHARGE) | |
538 | lp->hupflags |= ISDN_HAVECHARGE; | |
539 | lp->chargetime = jiffies; | |
540 | printk(KERN_DEBUG "isdn_net: Got CINF chargetime of %s now %lu\n", | |
541 | p->dev->name, lp->chargetime); | |
542 | return 1; | |
1da177e4 LT |
543 | } |
544 | } | |
545 | return 0; | |
546 | } | |
547 | ||
548 | /* | |
549 | * Perform dialout for net-interfaces and timeout-handling for | |
550 | * D-Channel-up and B-Channel-up Messages. | |
551 | * This function is initially called from within isdn_net_start_xmit() or | |
552 | * or isdn_net_find_icall() after initializing the dialstate for an | |
553 | * interface. If further calls are needed, the function schedules itself | |
554 | * for a timer-callback via isdn_timer_function(). | |
555 | * The dialstate is also affected by incoming status-messages from | |
556 | * the ISDN-Channel which are handled in isdn_net_stat_callback() above. | |
557 | */ | |
558 | void | |
559 | isdn_net_dial(void) | |
560 | { | |
561 | isdn_net_dev *p = dev->netdev; | |
562 | int anymore = 0; | |
563 | int i; | |
564 | isdn_ctrl cmd; | |
475be4d8 | 565 | u_char *phone_number; |
1da177e4 LT |
566 | |
567 | while (p) { | |
568 | isdn_net_local *lp = p->local; | |
569 | ||
570 | #ifdef ISDN_DEBUG_NET_DIAL | |
571 | if (lp->dialstate) | |
faca94ff | 572 | printk(KERN_DEBUG "%s: dialstate=%d\n", p->dev->name, lp->dialstate); |
1da177e4 LT |
573 | #endif |
574 | switch (lp->dialstate) { | |
475be4d8 JP |
575 | case 0: |
576 | /* Nothing to do for this interface */ | |
577 | break; | |
578 | case 1: | |
579 | /* Initiate dialout. Set phone-number-pointer to first number | |
580 | * of interface. | |
581 | */ | |
582 | lp->dial = lp->phone[1]; | |
583 | if (!lp->dial) { | |
584 | printk(KERN_WARNING "%s: phone number deleted?\n", | |
585 | p->dev->name); | |
586 | isdn_net_hangup(p->dev); | |
1da177e4 | 587 | break; |
475be4d8 JP |
588 | } |
589 | anymore = 1; | |
590 | ||
591 | if (lp->dialtimeout > 0) | |
592 | if (lp->dialstarted == 0 || time_after(jiffies, lp->dialstarted + lp->dialtimeout + lp->dialwait)) { | |
593 | lp->dialstarted = jiffies; | |
594 | lp->dialwait_timer = 0; | |
1da177e4 | 595 | } |
1da177e4 | 596 | |
475be4d8 JP |
597 | lp->dialstate++; |
598 | /* Fall through */ | |
599 | case 2: | |
600 | /* Prepare dialing. Clear EAZ, then set EAZ. */ | |
601 | cmd.driver = lp->isdn_device; | |
602 | cmd.arg = lp->isdn_channel; | |
603 | cmd.command = ISDN_CMD_CLREAZ; | |
604 | isdn_command(&cmd); | |
605 | sprintf(cmd.parm.num, "%s", isdn_map_eaz2msn(lp->msn, cmd.driver)); | |
606 | cmd.command = ISDN_CMD_SETEAZ; | |
607 | isdn_command(&cmd); | |
608 | lp->dialretry = 0; | |
609 | anymore = 1; | |
610 | lp->dialstate++; | |
611 | /* Fall through */ | |
612 | case 3: | |
613 | /* Setup interface, dial current phone-number, switch to next number. | |
614 | * If list of phone-numbers is exhausted, increment | |
615 | * retry-counter. | |
616 | */ | |
617 | if (dev->global_flags & ISDN_GLOBAL_STOPPED || (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF)) { | |
618 | char *s; | |
619 | if (dev->global_flags & ISDN_GLOBAL_STOPPED) | |
620 | s = "dial suppressed: isdn system stopped"; | |
621 | else | |
622 | s = "dial suppressed: dialmode `off'"; | |
623 | isdn_net_unreachable(p->dev, NULL, s); | |
624 | isdn_net_hangup(p->dev); | |
625 | break; | |
626 | } | |
627 | cmd.driver = lp->isdn_device; | |
628 | cmd.command = ISDN_CMD_SETL2; | |
629 | cmd.arg = lp->isdn_channel + (lp->l2_proto << 8); | |
630 | isdn_command(&cmd); | |
631 | cmd.driver = lp->isdn_device; | |
632 | cmd.command = ISDN_CMD_SETL3; | |
633 | cmd.arg = lp->isdn_channel + (lp->l3_proto << 8); | |
634 | isdn_command(&cmd); | |
635 | cmd.driver = lp->isdn_device; | |
636 | cmd.arg = lp->isdn_channel; | |
637 | if (!lp->dial) { | |
638 | printk(KERN_WARNING "%s: phone number deleted?\n", | |
639 | p->dev->name); | |
640 | isdn_net_hangup(p->dev); | |
641 | break; | |
642 | } | |
643 | if (!strncmp(lp->dial->num, "LEASED", strlen("LEASED"))) { | |
644 | lp->dialstate = 4; | |
645 | printk(KERN_INFO "%s: Open leased line ...\n", p->dev->name); | |
646 | } else { | |
647 | if (lp->dialtimeout > 0) | |
648 | if (time_after(jiffies, lp->dialstarted + lp->dialtimeout)) { | |
649 | lp->dialwait_timer = jiffies + lp->dialwait; | |
650 | lp->dialstarted = 0; | |
651 | isdn_net_unreachable(p->dev, NULL, "dial: timed out"); | |
652 | isdn_net_hangup(p->dev); | |
653 | break; | |
1da177e4 LT |
654 | } |
655 | ||
1da177e4 | 656 | cmd.driver = lp->isdn_device; |
475be4d8 JP |
657 | cmd.command = ISDN_CMD_DIAL; |
658 | cmd.parm.setup.si2 = 0; | |
659 | ||
660 | /* check for DOV */ | |
661 | phone_number = lp->dial->num; | |
662 | if ((*phone_number == 'v') || | |
663 | (*phone_number == 'V')) { /* DOV call */ | |
664 | cmd.parm.setup.si1 = 1; | |
665 | } else { /* DATA call */ | |
666 | cmd.parm.setup.si1 = 7; | |
1da177e4 | 667 | } |
1da177e4 | 668 | |
475be4d8 JP |
669 | strcpy(cmd.parm.setup.phone, phone_number); |
670 | /* | |
671 | * Switch to next number or back to start if at end of list. | |
672 | */ | |
673 | if (!(lp->dial = (isdn_net_phone *) lp->dial->next)) { | |
674 | lp->dial = lp->phone[1]; | |
675 | lp->dialretry++; | |
1da177e4 | 676 | |
475be4d8 JP |
677 | if (lp->dialretry > lp->dialmax) { |
678 | if (lp->dialtimeout == 0) { | |
679 | lp->dialwait_timer = jiffies + lp->dialwait; | |
680 | lp->dialstarted = 0; | |
681 | isdn_net_unreachable(p->dev, NULL, "dial: tried all numbers dialmax times"); | |
1da177e4 | 682 | } |
475be4d8 JP |
683 | isdn_net_hangup(p->dev); |
684 | break; | |
1da177e4 | 685 | } |
1da177e4 | 686 | } |
475be4d8 JP |
687 | sprintf(cmd.parm.setup.eazmsn, "%s", |
688 | isdn_map_eaz2msn(lp->msn, cmd.driver)); | |
689 | i = isdn_dc2minor(lp->isdn_device, lp->isdn_channel); | |
690 | if (i >= 0) { | |
691 | strcpy(dev->num[i], cmd.parm.setup.phone); | |
692 | dev->usage[i] |= ISDN_USAGE_OUTGOING; | |
693 | isdn_info_update(); | |
1da177e4 | 694 | } |
475be4d8 JP |
695 | printk(KERN_INFO "%s: dialing %d %s... %s\n", p->dev->name, |
696 | lp->dialretry, cmd.parm.setup.phone, | |
697 | (cmd.parm.setup.si1 == 1) ? "DOV" : ""); | |
1da177e4 | 698 | lp->dtimer = 0; |
475be4d8 JP |
699 | #ifdef ISDN_DEBUG_NET_DIAL |
700 | printk(KERN_DEBUG "dial: d=%d c=%d\n", lp->isdn_device, | |
701 | lp->isdn_channel); | |
702 | #endif | |
1da177e4 | 703 | isdn_command(&cmd); |
475be4d8 JP |
704 | } |
705 | lp->huptimer = 0; | |
706 | lp->outgoing = 1; | |
707 | if (lp->chargeint) { | |
708 | lp->hupflags |= ISDN_HAVECHARGE; | |
709 | lp->hupflags &= ~ISDN_WAITCHARGE; | |
710 | } else { | |
711 | lp->hupflags |= ISDN_WAITCHARGE; | |
712 | lp->hupflags &= ~ISDN_HAVECHARGE; | |
713 | } | |
714 | anymore = 1; | |
715 | lp->dialstate = | |
716 | (lp->cbdelay && | |
717 | (lp->flags & ISDN_NET_CBOUT)) ? 12 : 4; | |
718 | break; | |
719 | case 4: | |
720 | /* Wait for D-Channel-connect. | |
721 | * If timeout, switch back to state 3. | |
722 | * Dialmax-handling moved to state 3. | |
723 | */ | |
724 | if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10) | |
725 | lp->dialstate = 3; | |
726 | anymore = 1; | |
727 | break; | |
728 | case 5: | |
729 | /* Got D-Channel-Connect, send B-Channel-request */ | |
730 | cmd.driver = lp->isdn_device; | |
731 | cmd.arg = lp->isdn_channel; | |
732 | cmd.command = ISDN_CMD_ACCEPTB; | |
733 | anymore = 1; | |
734 | lp->dtimer = 0; | |
735 | lp->dialstate++; | |
736 | isdn_command(&cmd); | |
737 | break; | |
738 | case 6: | |
739 | /* Wait for B- or D-Channel-connect. If timeout, | |
740 | * switch back to state 3. | |
741 | */ | |
1da177e4 | 742 | #ifdef ISDN_DEBUG_NET_DIAL |
475be4d8 | 743 | printk(KERN_DEBUG "dialtimer2: %d\n", lp->dtimer); |
1da177e4 | 744 | #endif |
475be4d8 JP |
745 | if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10) |
746 | lp->dialstate = 3; | |
747 | anymore = 1; | |
748 | break; | |
749 | case 7: | |
750 | /* Got incoming Call, setup L2 and L3 protocols, | |
751 | * then wait for D-Channel-connect | |
752 | */ | |
1da177e4 | 753 | #ifdef ISDN_DEBUG_NET_DIAL |
475be4d8 | 754 | printk(KERN_DEBUG "dialtimer4: %d\n", lp->dtimer); |
1da177e4 | 755 | #endif |
475be4d8 JP |
756 | cmd.driver = lp->isdn_device; |
757 | cmd.command = ISDN_CMD_SETL2; | |
758 | cmd.arg = lp->isdn_channel + (lp->l2_proto << 8); | |
759 | isdn_command(&cmd); | |
760 | cmd.driver = lp->isdn_device; | |
761 | cmd.command = ISDN_CMD_SETL3; | |
762 | cmd.arg = lp->isdn_channel + (lp->l3_proto << 8); | |
763 | isdn_command(&cmd); | |
764 | if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT15) | |
765 | isdn_net_hangup(p->dev); | |
766 | else { | |
1da177e4 | 767 | anymore = 1; |
1da177e4 | 768 | lp->dialstate++; |
475be4d8 JP |
769 | } |
770 | break; | |
771 | case 9: | |
772 | /* Got incoming D-Channel-Connect, send B-Channel-request */ | |
773 | cmd.driver = lp->isdn_device; | |
774 | cmd.arg = lp->isdn_channel; | |
775 | cmd.command = ISDN_CMD_ACCEPTB; | |
776 | isdn_command(&cmd); | |
777 | anymore = 1; | |
778 | lp->dtimer = 0; | |
779 | lp->dialstate++; | |
780 | break; | |
781 | case 8: | |
782 | case 10: | |
783 | /* Wait for B- or D-channel-connect */ | |
1da177e4 | 784 | #ifdef ISDN_DEBUG_NET_DIAL |
475be4d8 | 785 | printk(KERN_DEBUG "dialtimer4: %d\n", lp->dtimer); |
1da177e4 | 786 | #endif |
475be4d8 JP |
787 | if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10) |
788 | isdn_net_hangup(p->dev); | |
789 | else | |
1da177e4 | 790 | anymore = 1; |
475be4d8 JP |
791 | break; |
792 | case 11: | |
793 | /* Callback Delay */ | |
794 | if (lp->dtimer++ > lp->cbdelay) | |
795 | lp->dialstate = 1; | |
796 | anymore = 1; | |
797 | break; | |
798 | case 12: | |
799 | /* Remote does callback. Hangup after cbdelay, then wait for incoming | |
800 | * call (in state 4). | |
801 | */ | |
802 | if (lp->dtimer++ > lp->cbdelay) | |
803 | { | |
804 | printk(KERN_INFO "%s: hangup waiting for callback ...\n", p->dev->name); | |
805 | lp->dtimer = 0; | |
806 | lp->dialstate = 4; | |
807 | cmd.driver = lp->isdn_device; | |
808 | cmd.command = ISDN_CMD_HANGUP; | |
809 | cmd.arg = lp->isdn_channel; | |
810 | isdn_command(&cmd); | |
811 | isdn_all_eaz(lp->isdn_device, lp->isdn_channel); | |
812 | } | |
813 | anymore = 1; | |
814 | break; | |
815 | default: | |
816 | printk(KERN_WARNING "isdn_net: Illegal dialstate %d for device %s\n", | |
817 | lp->dialstate, p->dev->name); | |
1da177e4 LT |
818 | } |
819 | p = (isdn_net_dev *) p->next; | |
820 | } | |
821 | isdn_timer_ctrl(ISDN_TIMER_NETDIAL, anymore); | |
822 | } | |
823 | ||
824 | /* | |
825 | * Perform hangup for a net-interface. | |
826 | */ | |
827 | void | |
828 | isdn_net_hangup(struct net_device *d) | |
829 | { | |
a17531fa | 830 | isdn_net_local *lp = netdev_priv(d); |
1da177e4 LT |
831 | isdn_ctrl cmd; |
832 | #ifdef CONFIG_ISDN_X25 | |
833 | struct concap_proto *cprot = lp->netdev->cprot; | |
834 | struct concap_proto_ops *pops = cprot ? cprot->pops : NULL; | |
835 | #endif | |
836 | ||
837 | if (lp->flags & ISDN_NET_CONNECTED) { | |
838 | if (lp->slave != NULL) { | |
838361fe | 839 | isdn_net_local *slp = ISDN_SLAVE_PRIV(lp); |
1da177e4 LT |
840 | if (slp->flags & ISDN_NET_CONNECTED) { |
841 | printk(KERN_INFO | |
475be4d8 JP |
842 | "isdn_net: hang up slave %s before %s\n", |
843 | lp->slave->name, d->name); | |
1da177e4 LT |
844 | isdn_net_hangup(lp->slave); |
845 | } | |
846 | } | |
faca94ff | 847 | printk(KERN_INFO "isdn_net: local hangup %s\n", d->name); |
1da177e4 LT |
848 | #ifdef CONFIG_ISDN_PPP |
849 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) | |
850 | isdn_ppp_free(lp); | |
851 | #endif | |
852 | isdn_net_lp_disconnected(lp); | |
853 | #ifdef CONFIG_ISDN_X25 | |
854 | /* try if there are generic encap protocol | |
855 | receiver routines and signal the closure of | |
856 | the link */ | |
475be4d8 JP |
857 | if (pops && pops->disconn_ind) |
858 | pops->disconn_ind(cprot); | |
1da177e4 LT |
859 | #endif /* CONFIG_ISDN_X25 */ |
860 | ||
861 | cmd.driver = lp->isdn_device; | |
862 | cmd.command = ISDN_CMD_HANGUP; | |
863 | cmd.arg = lp->isdn_channel; | |
864 | isdn_command(&cmd); | |
faca94ff | 865 | printk(KERN_INFO "%s: Chargesum is %d\n", d->name, lp->charge); |
1da177e4 LT |
866 | isdn_all_eaz(lp->isdn_device, lp->isdn_channel); |
867 | } | |
868 | isdn_net_unbind_channel(lp); | |
869 | } | |
870 | ||
871 | typedef struct { | |
c19d0369 HH |
872 | __be16 source; |
873 | __be16 dest; | |
1da177e4 LT |
874 | } ip_ports; |
875 | ||
876 | static void | |
475be4d8 | 877 | isdn_net_log_skb(struct sk_buff *skb, isdn_net_local *lp) |
1da177e4 | 878 | { |
d56f90a7 ACM |
879 | /* hopefully, this was set correctly */ |
880 | const u_char *p = skb_network_header(skb); | |
1da177e4 LT |
881 | unsigned short proto = ntohs(skb->protocol); |
882 | int data_ofs; | |
883 | ip_ports *ipp; | |
884 | char addinfo[100]; | |
885 | ||
886 | addinfo[0] = '\0'; | |
887 | /* This check stolen from 2.1.72 dev_queue_xmit_nit() */ | |
25b6e148 | 888 | if (p < skb->data || skb_network_header(skb) >= skb_tail_pointer(skb)) { |
1da177e4 | 889 | /* fall back to old isdn_net_log_packet method() */ |
475be4d8 | 890 | char *buf = skb->data; |
1da177e4 | 891 | |
faca94ff | 892 | printk(KERN_DEBUG "isdn_net: protocol %04x is buggy, dev %s\n", skb->protocol, lp->netdev->dev->name); |
1da177e4 LT |
893 | p = buf; |
894 | proto = ETH_P_IP; | |
895 | switch (lp->p_encap) { | |
475be4d8 JP |
896 | case ISDN_NET_ENCAP_IPTYP: |
897 | proto = ntohs(*(__be16 *)&buf[0]); | |
898 | p = &buf[2]; | |
899 | break; | |
900 | case ISDN_NET_ENCAP_ETHER: | |
901 | proto = ntohs(*(__be16 *)&buf[12]); | |
902 | p = &buf[14]; | |
903 | break; | |
904 | case ISDN_NET_ENCAP_CISCOHDLC: | |
905 | proto = ntohs(*(__be16 *)&buf[2]); | |
906 | p = &buf[4]; | |
907 | break; | |
1da177e4 | 908 | #ifdef CONFIG_ISDN_PPP |
475be4d8 JP |
909 | case ISDN_NET_ENCAP_SYNCPPP: |
910 | proto = ntohs(skb->protocol); | |
911 | p = &buf[IPPP_MAX_HEADER]; | |
912 | break; | |
1da177e4 LT |
913 | #endif |
914 | } | |
915 | } | |
916 | data_ofs = ((p[0] & 15) * 4); | |
917 | switch (proto) { | |
475be4d8 JP |
918 | case ETH_P_IP: |
919 | switch (p[9]) { | |
920 | case 1: | |
921 | strcpy(addinfo, " ICMP"); | |
922 | break; | |
923 | case 2: | |
924 | strcpy(addinfo, " IGMP"); | |
925 | break; | |
926 | case 4: | |
927 | strcpy(addinfo, " IPIP"); | |
928 | break; | |
929 | case 6: | |
930 | ipp = (ip_ports *) (&p[data_ofs]); | |
931 | sprintf(addinfo, " TCP, port: %d -> %d", ntohs(ipp->source), | |
932 | ntohs(ipp->dest)); | |
933 | break; | |
934 | case 8: | |
935 | strcpy(addinfo, " EGP"); | |
936 | break; | |
937 | case 12: | |
938 | strcpy(addinfo, " PUP"); | |
939 | break; | |
940 | case 17: | |
941 | ipp = (ip_ports *) (&p[data_ofs]); | |
942 | sprintf(addinfo, " UDP, port: %d -> %d", ntohs(ipp->source), | |
943 | ntohs(ipp->dest)); | |
1da177e4 | 944 | break; |
475be4d8 JP |
945 | case 22: |
946 | strcpy(addinfo, " IDP"); | |
1da177e4 | 947 | break; |
475be4d8 JP |
948 | } |
949 | printk(KERN_INFO "OPEN: %pI4 -> %pI4%s\n", | |
950 | p + 12, p + 16, addinfo); | |
951 | break; | |
952 | case ETH_P_ARP: | |
953 | printk(KERN_INFO "OPEN: ARP %pI4 -> *.*.*.* ?%pI4\n", | |
954 | p + 14, p + 24); | |
955 | break; | |
1da177e4 LT |
956 | } |
957 | } | |
958 | ||
959 | /* | |
960 | * this function is used to send supervisory data, i.e. data which was | |
961 | * not received from the network layer, but e.g. frames from ipppd, CCP | |
962 | * reset frames etc. | |
963 | */ | |
964 | void isdn_net_write_super(isdn_net_local *lp, struct sk_buff *skb) | |
965 | { | |
966 | if (in_irq()) { | |
475be4d8 | 967 | // we can't grab the lock from irq context, |
1da177e4 LT |
968 | // so we just queue the packet |
969 | skb_queue_tail(&lp->super_tx_queue, skb); | |
970 | schedule_work(&lp->tqueue); | |
971 | return; | |
972 | } | |
973 | ||
974 | spin_lock_bh(&lp->xmit_lock); | |
975 | if (!isdn_net_lp_busy(lp)) { | |
976 | isdn_net_writebuf_skb(lp, skb); | |
977 | } else { | |
978 | skb_queue_tail(&lp->super_tx_queue, skb); | |
979 | } | |
980 | spin_unlock_bh(&lp->xmit_lock); | |
981 | } | |
982 | ||
983 | /* | |
984 | * called from tq_immediate | |
985 | */ | |
c4028958 | 986 | static void isdn_net_softint(struct work_struct *work) |
1da177e4 | 987 | { |
c4028958 | 988 | isdn_net_local *lp = container_of(work, isdn_net_local, tqueue); |
1da177e4 LT |
989 | struct sk_buff *skb; |
990 | ||
991 | spin_lock_bh(&lp->xmit_lock); | |
992 | while (!isdn_net_lp_busy(lp)) { | |
993 | skb = skb_dequeue(&lp->super_tx_queue); | |
994 | if (!skb) | |
995 | break; | |
475be4d8 | 996 | isdn_net_writebuf_skb(lp, skb); |
1da177e4 LT |
997 | } |
998 | spin_unlock_bh(&lp->xmit_lock); | |
999 | } | |
1000 | ||
475be4d8 | 1001 | /* |
1da177e4 LT |
1002 | * all frames sent from the (net) LL to a HL driver should go via this function |
1003 | * it's serialized by the caller holding the lp->xmit_lock spinlock | |
1004 | */ | |
1005 | void isdn_net_writebuf_skb(isdn_net_local *lp, struct sk_buff *skb) | |
1006 | { | |
1007 | int ret; | |
1008 | int len = skb->len; /* save len */ | |
1009 | ||
1010 | /* before obtaining the lock the caller should have checked that | |
1011 | the lp isn't busy */ | |
1012 | if (isdn_net_lp_busy(lp)) { | |
1013 | printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__); | |
1014 | goto error; | |
1015 | } | |
1016 | ||
1017 | if (!(lp->flags & ISDN_NET_CONNECTED)) { | |
1018 | printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__); | |
1019 | goto error; | |
1020 | } | |
1021 | ret = isdn_writebuf_skb_stub(lp->isdn_device, lp->isdn_channel, 1, skb); | |
1022 | if (ret != len) { | |
1023 | /* we should never get here */ | |
faca94ff | 1024 | printk(KERN_WARNING "%s: HL driver queue full\n", lp->netdev->dev->name); |
1da177e4 LT |
1025 | goto error; |
1026 | } | |
475be4d8 | 1027 | |
1da177e4 LT |
1028 | lp->transcount += len; |
1029 | isdn_net_inc_frame_cnt(lp); | |
1030 | return; | |
1031 | ||
475be4d8 | 1032 | error: |
1da177e4 LT |
1033 | dev_kfree_skb(skb); |
1034 | lp->stats.tx_errors++; | |
1035 | ||
1036 | } | |
1037 | ||
1038 | ||
1039 | /* | |
1040 | * Helper function for isdn_net_start_xmit. | |
1041 | * When called, the connection is already established. | |
1042 | * Based on cps-calculation, check if device is overloaded. | |
1043 | * If so, and if a slave exists, trigger dialing for it. | |
1044 | * If any slave is online, deliver packets using a simple round robin | |
1045 | * scheme. | |
1046 | * | |
1047 | * Return: 0 on success, !0 on failure. | |
1048 | */ | |
1049 | ||
1050 | static int | |
1051 | isdn_net_xmit(struct net_device *ndev, struct sk_buff *skb) | |
1052 | { | |
1053 | isdn_net_dev *nd; | |
1054 | isdn_net_local *slp; | |
a17531fa | 1055 | isdn_net_local *lp = netdev_priv(ndev); |
ec634fe3 | 1056 | int retv = NETDEV_TX_OK; |
1da177e4 | 1057 | |
838361fe | 1058 | if (((isdn_net_local *) netdev_priv(ndev))->master) { |
1da177e4 LT |
1059 | printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__); |
1060 | dev_kfree_skb(skb); | |
ec634fe3 | 1061 | return NETDEV_TX_OK; |
1da177e4 LT |
1062 | } |
1063 | ||
1064 | /* For the other encaps the header has already been built */ | |
1065 | #ifdef CONFIG_ISDN_PPP | |
1066 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) { | |
1067 | return isdn_ppp_xmit(skb, ndev); | |
1068 | } | |
1069 | #endif | |
838361fe | 1070 | nd = ((isdn_net_local *) netdev_priv(ndev))->netdev; |
1da177e4 LT |
1071 | lp = isdn_net_get_locked_lp(nd); |
1072 | if (!lp) { | |
1073 | printk(KERN_WARNING "%s: all channels busy - requeuing!\n", ndev->name); | |
5b548140 | 1074 | return NETDEV_TX_BUSY; |
1da177e4 LT |
1075 | } |
1076 | /* we have our lp locked from now on */ | |
1077 | ||
1078 | /* Reset hangup-timeout */ | |
1079 | lp->huptimer = 0; // FIXME? | |
1080 | isdn_net_writebuf_skb(lp, skb); | |
1081 | spin_unlock_bh(&lp->xmit_lock); | |
1082 | ||
1083 | /* the following stuff is here for backwards compatibility. | |
1084 | * in future, start-up and hangup of slaves (based on current load) | |
1085 | * should move to userspace and get based on an overall cps | |
1086 | * calculation | |
1087 | */ | |
1088 | if (lp->cps > lp->triggercps) { | |
1089 | if (lp->slave) { | |
1090 | if (!lp->sqfull) { | |
1091 | /* First time overload: set timestamp only */ | |
1092 | lp->sqfull = 1; | |
1093 | lp->sqfull_stamp = jiffies; | |
1094 | } else { | |
1095 | /* subsequent overload: if slavedelay exceeded, start dialing */ | |
1096 | if (time_after(jiffies, lp->sqfull_stamp + lp->slavedelay)) { | |
838361fe | 1097 | slp = ISDN_SLAVE_PRIV(lp); |
1da177e4 | 1098 | if (!(slp->flags & ISDN_NET_CONNECTED)) { |
838361fe | 1099 | isdn_net_force_dial_lp(ISDN_SLAVE_PRIV(lp)); |
1da177e4 LT |
1100 | } |
1101 | } | |
1102 | } | |
1103 | } | |
1104 | } else { | |
1105 | if (lp->sqfull && time_after(jiffies, lp->sqfull_stamp + lp->slavedelay + (10 * HZ))) { | |
1106 | lp->sqfull = 0; | |
1107 | } | |
1108 | /* this is a hack to allow auto-hangup for slaves on moderate loads */ | |
1109 | nd->queue = nd->local; | |
1110 | } | |
1111 | ||
1112 | return retv; | |
1113 | ||
1114 | } | |
1115 | ||
1116 | static void | |
1117 | isdn_net_adjust_hdr(struct sk_buff *skb, struct net_device *dev) | |
1118 | { | |
a17531fa | 1119 | isdn_net_local *lp = netdev_priv(dev); |
1da177e4 LT |
1120 | if (!skb) |
1121 | return; | |
1122 | if (lp->p_encap == ISDN_NET_ENCAP_ETHER) { | |
bbe735e4 | 1123 | const int pullsize = skb_network_offset(skb) - ETH_HLEN; |
1da177e4 LT |
1124 | if (pullsize > 0) { |
1125 | printk(KERN_DEBUG "isdn_net: Pull junk %d\n", pullsize); | |
1126 | skb_pull(skb, pullsize); | |
1127 | } | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | ||
475be4d8 | 1132 | static void isdn_net_tx_timeout(struct net_device *ndev) |
1da177e4 | 1133 | { |
a17531fa | 1134 | isdn_net_local *lp = netdev_priv(ndev); |
1da177e4 LT |
1135 | |
1136 | printk(KERN_WARNING "isdn_tx_timeout dev %s dialstate %d\n", ndev->name, lp->dialstate); | |
475be4d8 | 1137 | if (!lp->dialstate) { |
1da177e4 | 1138 | lp->stats.tx_errors++; |
475be4d8 | 1139 | /* |
1da177e4 LT |
1140 | * There is a certain probability that this currently |
1141 | * works at all because if we always wake up the interface, | |
1142 | * then upper layer will try to send the next packet | |
1143 | * immediately. And then, the old clean_up logic in the | |
1144 | * driver will hopefully continue to work as it used to do. | |
1145 | * | |
1146 | * This is rather primitive right know, we better should | |
1147 | * clean internal queues here, in particular for multilink and | |
1148 | * ppp, and reset HL driver's channel, too. --HE | |
1149 | * | |
1150 | * actually, this may not matter at all, because ISDN hardware | |
1151 | * should not see transmitter hangs at all IMO | |
475be4d8 | 1152 | * changed KERN_DEBUG to KERN_WARNING to find out if this is |
1da177e4 LT |
1153 | * ever called --KG |
1154 | */ | |
1155 | } | |
860e9538 | 1156 | netif_trans_update(ndev); |
1da177e4 LT |
1157 | netif_wake_queue(ndev); |
1158 | } | |
1159 | ||
1160 | /* | |
1161 | * Try sending a packet. | |
1162 | * If this interface isn't connected to a ISDN-Channel, find a free channel, | |
1163 | * and start dialing. | |
1164 | */ | |
8b62ff2d | 1165 | static netdev_tx_t |
1da177e4 LT |
1166 | isdn_net_start_xmit(struct sk_buff *skb, struct net_device *ndev) |
1167 | { | |
a17531fa | 1168 | isdn_net_local *lp = netdev_priv(ndev); |
1da177e4 | 1169 | #ifdef CONFIG_ISDN_X25 |
475be4d8 | 1170 | struct concap_proto *cprot = lp->netdev->cprot; |
1da177e4 LT |
1171 | /* At this point hard_start_xmit() passes control to the encapsulation |
1172 | protocol (if present). | |
1173 | For X.25 auto-dialing is completly bypassed because: | |
1174 | - It does not conform with the semantics of a reliable datalink | |
475be4d8 | 1175 | service as needed by X.25 PLP. |
1da177e4 | 1176 | - I don't want that the interface starts dialing when the network layer |
475be4d8 JP |
1177 | sends a message which requests to disconnect the lapb link (or if it |
1178 | sends any other message not resulting in data transmission). | |
1da177e4 LT |
1179 | Instead, dialing will be initiated by the encapsulation protocol entity |
1180 | when a dl_establish request is received from the upper layer. | |
1181 | */ | |
475be4d8 JP |
1182 | if (cprot && cprot->pops) { |
1183 | int ret = cprot->pops->encap_and_xmit(cprot, skb); | |
1da177e4 LT |
1184 | |
1185 | if (ret) | |
1186 | netif_stop_queue(ndev); | |
1187 | return ret; | |
1188 | } else | |
1189 | #endif | |
475be4d8 | 1190 | /* auto-dialing xmit function */ |
1da177e4 LT |
1191 | { |
1192 | #ifdef ISDN_DEBUG_NET_DUMP | |
1193 | u_char *buf; | |
1194 | #endif | |
1195 | isdn_net_adjust_hdr(skb, ndev); | |
1196 | #ifdef ISDN_DEBUG_NET_DUMP | |
1197 | buf = skb->data; | |
1198 | isdn_dumppkt("S:", buf, skb->len, 40); | |
1199 | #endif | |
1200 | ||
1201 | if (!(lp->flags & ISDN_NET_CONNECTED)) { | |
1202 | int chi; | |
1203 | /* only do autodial if allowed by config */ | |
1204 | if (!(ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_AUTO)) { | |
1205 | isdn_net_unreachable(ndev, skb, "dial rejected: interface not in dialmode `auto'"); | |
1206 | dev_kfree_skb(skb); | |
6ed10654 | 1207 | return NETDEV_TX_OK; |
1da177e4 LT |
1208 | } |
1209 | if (lp->phone[1]) { | |
1210 | ulong flags; | |
1211 | ||
475be4d8 JP |
1212 | if (lp->dialwait_timer <= 0) |
1213 | if (lp->dialstarted > 0 && lp->dialtimeout > 0 && time_before(jiffies, lp->dialstarted + lp->dialtimeout + lp->dialwait)) | |
1da177e4 LT |
1214 | lp->dialwait_timer = lp->dialstarted + lp->dialtimeout + lp->dialwait; |
1215 | ||
475be4d8 JP |
1216 | if (lp->dialwait_timer > 0) { |
1217 | if (time_before(jiffies, lp->dialwait_timer)) { | |
1da177e4 LT |
1218 | isdn_net_unreachable(ndev, skb, "dial rejected: retry-time not reached"); |
1219 | dev_kfree_skb(skb); | |
6ed10654 | 1220 | return NETDEV_TX_OK; |
1da177e4 LT |
1221 | } else |
1222 | lp->dialwait_timer = 0; | |
1223 | } | |
1224 | /* Grab a free ISDN-Channel */ | |
1225 | spin_lock_irqsave(&dev->lock, flags); | |
1226 | if (((chi = | |
475be4d8 JP |
1227 | isdn_get_free_channel( |
1228 | ISDN_USAGE_NET, | |
1229 | lp->l2_proto, | |
1230 | lp->l3_proto, | |
1231 | lp->pre_device, | |
1232 | lp->pre_channel, | |
1233 | lp->msn) | |
1234 | ) < 0) && | |
1235 | ((chi = | |
1236 | isdn_get_free_channel( | |
1237 | ISDN_USAGE_NET, | |
1238 | lp->l2_proto, | |
1239 | lp->l3_proto, | |
1240 | lp->pre_device, | |
1241 | lp->pre_channel^1, | |
1242 | lp->msn) | |
1243 | ) < 0)) { | |
1da177e4 LT |
1244 | spin_unlock_irqrestore(&dev->lock, flags); |
1245 | isdn_net_unreachable(ndev, skb, | |
475be4d8 | 1246 | "No channel"); |
1da177e4 | 1247 | dev_kfree_skb(skb); |
6ed10654 | 1248 | return NETDEV_TX_OK; |
1da177e4 LT |
1249 | } |
1250 | /* Log packet, which triggered dialing */ | |
1251 | if (dev->net_verbose) | |
1252 | isdn_net_log_skb(skb, lp); | |
1253 | lp->dialstate = 1; | |
1254 | /* Connect interface with channel */ | |
1255 | isdn_net_bind_channel(lp, chi); | |
1256 | #ifdef CONFIG_ISDN_PPP | |
1257 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) { | |
1258 | /* no 'first_skb' handling for syncPPP */ | |
1259 | if (isdn_ppp_bind(lp) < 0) { | |
1260 | dev_kfree_skb(skb); | |
1261 | isdn_net_unbind_channel(lp); | |
1262 | spin_unlock_irqrestore(&dev->lock, flags); | |
6ed10654 | 1263 | return NETDEV_TX_OK; /* STN (skb to nirvana) ;) */ |
1da177e4 LT |
1264 | } |
1265 | #ifdef CONFIG_IPPP_FILTER | |
1266 | if (isdn_ppp_autodial_filter(skb, lp)) { | |
1267 | isdn_ppp_free(lp); | |
1268 | isdn_net_unbind_channel(lp); | |
1269 | spin_unlock_irqrestore(&dev->lock, flags); | |
1270 | isdn_net_unreachable(ndev, skb, "dial rejected: packet filtered"); | |
1271 | dev_kfree_skb(skb); | |
6ed10654 | 1272 | return NETDEV_TX_OK; |
1da177e4 LT |
1273 | } |
1274 | #endif | |
1275 | spin_unlock_irqrestore(&dev->lock, flags); | |
1276 | isdn_net_dial(); /* Initiate dialing */ | |
1277 | netif_stop_queue(ndev); | |
5b548140 | 1278 | return NETDEV_TX_BUSY; /* let upper layer requeue skb packet */ |
1da177e4 LT |
1279 | } |
1280 | #endif | |
1281 | /* Initiate dialing */ | |
1282 | spin_unlock_irqrestore(&dev->lock, flags); | |
1283 | isdn_net_dial(); | |
1284 | isdn_net_device_stop_queue(lp); | |
5b548140 | 1285 | return NETDEV_TX_BUSY; |
1da177e4 LT |
1286 | } else { |
1287 | isdn_net_unreachable(ndev, skb, | |
1288 | "No phone number"); | |
1289 | dev_kfree_skb(skb); | |
6ed10654 | 1290 | return NETDEV_TX_OK; |
1da177e4 LT |
1291 | } |
1292 | } else { | |
475be4d8 | 1293 | /* Device is connected to an ISDN channel */ |
860e9538 | 1294 | netif_trans_update(ndev); |
1da177e4 LT |
1295 | if (!lp->dialstate) { |
1296 | /* ISDN connection is established, try sending */ | |
1297 | int ret; | |
1298 | ret = (isdn_net_xmit(ndev, skb)); | |
475be4d8 | 1299 | if (ret) netif_stop_queue(ndev); |
1da177e4 LT |
1300 | return ret; |
1301 | } else | |
1302 | netif_stop_queue(ndev); | |
1303 | } | |
1304 | } | |
d77eeb70 | 1305 | return NETDEV_TX_BUSY; |
1da177e4 LT |
1306 | } |
1307 | ||
1308 | /* | |
1309 | * Shutdown a net-interface. | |
1310 | */ | |
1311 | static int | |
1312 | isdn_net_close(struct net_device *dev) | |
1313 | { | |
1314 | struct net_device *p; | |
1315 | #ifdef CONFIG_ISDN_X25 | |
475be4d8 JP |
1316 | struct concap_proto *cprot = |
1317 | ((isdn_net_local *)netdev_priv(dev))->netdev->cprot; | |
1318 | /* printk(KERN_DEBUG "isdn_net_close %s\n" , dev-> name); */ | |
1da177e4 LT |
1319 | #endif |
1320 | ||
1321 | #ifdef CONFIG_ISDN_X25 | |
475be4d8 | 1322 | if (cprot && cprot->pops) cprot->pops->close(cprot); |
1da177e4 LT |
1323 | #endif |
1324 | netif_stop_queue(dev); | |
838361fe WC |
1325 | p = MASTER_TO_SLAVE(dev); |
1326 | if (p) { | |
1da177e4 LT |
1327 | /* If this interface has slaves, stop them also */ |
1328 | while (p) { | |
1329 | #ifdef CONFIG_ISDN_X25 | |
475be4d8 JP |
1330 | cprot = ((isdn_net_local *)netdev_priv(p)) |
1331 | ->netdev->cprot; | |
1332 | if (cprot && cprot->pops) | |
1333 | cprot->pops->close(cprot); | |
1da177e4 LT |
1334 | #endif |
1335 | isdn_net_hangup(p); | |
838361fe | 1336 | p = MASTER_TO_SLAVE(p); |
1da177e4 LT |
1337 | } |
1338 | } | |
1339 | isdn_net_hangup(dev); | |
1340 | isdn_unlock_drivers(); | |
1341 | return 0; | |
1342 | } | |
1343 | ||
1344 | /* | |
1345 | * Get statistics | |
1346 | */ | |
1347 | static struct net_device_stats * | |
1348 | isdn_net_get_stats(struct net_device *dev) | |
1349 | { | |
a17531fa | 1350 | isdn_net_local *lp = netdev_priv(dev); |
1da177e4 LT |
1351 | return &lp->stats; |
1352 | } | |
1353 | ||
1354 | /* This is simply a copy from std. eth.c EXCEPT we pull ETH_HLEN | |
1355 | * instead of dev->hard_header_len off. This is done because the | |
1356 | * lowlevel-driver has already pulled off its stuff when we get | |
1357 | * here and this routine only gets called with p_encap == ETHER. | |
1358 | * Determine the packet's protocol ID. The rule here is that we | |
1359 | * assume 802.3 if the type field is short enough to be a length. | |
1360 | * This is normal practice and works for any 'now in use' protocol. | |
1361 | */ | |
1362 | ||
c19d0369 | 1363 | static __be16 |
1da177e4 LT |
1364 | isdn_net_type_trans(struct sk_buff *skb, struct net_device *dev) |
1365 | { | |
1366 | struct ethhdr *eth; | |
1367 | unsigned char *rawp; | |
1368 | ||
459a98ed | 1369 | skb_reset_mac_header(skb); |
1da177e4 LT |
1370 | skb_pull(skb, ETH_HLEN); |
1371 | eth = eth_hdr(skb); | |
1372 | ||
1373 | if (*eth->h_dest & 1) { | |
48f045b9 | 1374 | if (ether_addr_equal(eth->h_dest, dev->broadcast)) |
1da177e4 LT |
1375 | skb->pkt_type = PACKET_BROADCAST; |
1376 | else | |
1377 | skb->pkt_type = PACKET_MULTICAST; | |
1378 | } | |
1379 | /* | |
1380 | * This ALLMULTI check should be redundant by 1.4 | |
1381 | * so don't forget to remove it. | |
1382 | */ | |
1383 | ||
1384 | else if (dev->flags & (IFF_PROMISC /*| IFF_ALLMULTI*/)) { | |
48f045b9 | 1385 | if (!ether_addr_equal(eth->h_dest, dev->dev_addr)) |
1da177e4 LT |
1386 | skb->pkt_type = PACKET_OTHERHOST; |
1387 | } | |
e5c5d22e | 1388 | if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) |
1da177e4 LT |
1389 | return eth->h_proto; |
1390 | ||
1391 | rawp = skb->data; | |
1392 | ||
1393 | /* | |
1394 | * This is a magic hack to spot IPX packets. Older Novell breaks | |
1395 | * the protocol design and runs IPX over 802.3 without an 802.2 LLC | |
1396 | * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This | |
1397 | * won't work for fault tolerant netware but does for the rest. | |
1398 | */ | |
1399 | if (*(unsigned short *) rawp == 0xFFFF) | |
1400 | return htons(ETH_P_802_3); | |
1401 | /* | |
1402 | * Real 802.2 LLC | |
1403 | */ | |
1404 | return htons(ETH_P_802_2); | |
1405 | } | |
1406 | ||
1407 | ||
475be4d8 | 1408 | /* |
1da177e4 LT |
1409 | * CISCO HDLC keepalive specific stuff |
1410 | */ | |
1411 | static struct sk_buff* | |
1412 | isdn_net_ciscohdlck_alloc_skb(isdn_net_local *lp, int len) | |
1413 | { | |
1414 | unsigned short hl = dev->drv[lp->isdn_device]->interface->hl_hdrlen; | |
1415 | struct sk_buff *skb; | |
1416 | ||
1417 | skb = alloc_skb(hl + len, GFP_ATOMIC); | |
1418 | if (skb) | |
1419 | skb_reserve(skb, hl); | |
475be4d8 | 1420 | else |
1da177e4 LT |
1421 | printk("isdn out of mem at %s:%d!\n", __FILE__, __LINE__); |
1422 | return skb; | |
1423 | } | |
1424 | ||
1425 | /* cisco hdlck device private ioctls */ | |
3e206b0a | 1426 | static int |
1da177e4 LT |
1427 | isdn_ciscohdlck_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
1428 | { | |
a17531fa | 1429 | isdn_net_local *lp = netdev_priv(dev); |
1da177e4 LT |
1430 | unsigned long len = 0; |
1431 | unsigned long expires = 0; | |
1432 | int tmp = 0; | |
1433 | int period = lp->cisco_keepalive_period; | |
1434 | s8 debserint = lp->cisco_debserint; | |
1435 | int rc = 0; | |
1436 | ||
1437 | if (lp->p_encap != ISDN_NET_ENCAP_CISCOHDLCK) | |
1438 | return -EINVAL; | |
1439 | ||
1440 | switch (cmd) { | |
1441 | /* get/set keepalive period */ | |
475be4d8 JP |
1442 | case SIOCGKEEPPERIOD: |
1443 | len = (unsigned long)sizeof(lp->cisco_keepalive_period); | |
1444 | if (copy_to_user(ifr->ifr_data, | |
1445 | &lp->cisco_keepalive_period, len)) | |
1446 | rc = -EFAULT; | |
1447 | break; | |
1448 | case SIOCSKEEPPERIOD: | |
1449 | tmp = lp->cisco_keepalive_period; | |
1450 | len = (unsigned long)sizeof(lp->cisco_keepalive_period); | |
1451 | if (copy_from_user(&period, ifr->ifr_data, len)) | |
1452 | rc = -EFAULT; | |
1453 | if ((period > 0) && (period <= 32767)) | |
1454 | lp->cisco_keepalive_period = period; | |
1455 | else | |
1456 | rc = -EINVAL; | |
1457 | if (!rc && (tmp != lp->cisco_keepalive_period)) { | |
1458 | expires = (unsigned long)(jiffies + | |
1459 | lp->cisco_keepalive_period * HZ); | |
1460 | mod_timer(&lp->cisco_timer, expires); | |
1461 | printk(KERN_INFO "%s: Keepalive period set " | |
1462 | "to %d seconds.\n", | |
1463 | dev->name, lp->cisco_keepalive_period); | |
1464 | } | |
1465 | break; | |
1da177e4 LT |
1466 | |
1467 | /* get/set debugging */ | |
475be4d8 JP |
1468 | case SIOCGDEBSERINT: |
1469 | len = (unsigned long)sizeof(lp->cisco_debserint); | |
1470 | if (copy_to_user(ifr->ifr_data, | |
1471 | &lp->cisco_debserint, len)) | |
1472 | rc = -EFAULT; | |
1473 | break; | |
1474 | case SIOCSDEBSERINT: | |
1475 | len = (unsigned long)sizeof(lp->cisco_debserint); | |
1476 | if (copy_from_user(&debserint, | |
1477 | ifr->ifr_data, len)) | |
1478 | rc = -EFAULT; | |
1479 | if ((debserint >= 0) && (debserint <= 64)) | |
1480 | lp->cisco_debserint = debserint; | |
1481 | else | |
1da177e4 | 1482 | rc = -EINVAL; |
475be4d8 JP |
1483 | break; |
1484 | ||
1485 | default: | |
1486 | rc = -EINVAL; | |
1487 | break; | |
1da177e4 LT |
1488 | } |
1489 | return (rc); | |
1490 | } | |
1491 | ||
d700555b SH |
1492 | |
1493 | static int isdn_net_ioctl(struct net_device *dev, | |
1494 | struct ifreq *ifr, int cmd) | |
1495 | { | |
a17531fa | 1496 | isdn_net_local *lp = netdev_priv(dev); |
d700555b SH |
1497 | |
1498 | switch (lp->p_encap) { | |
1499 | #ifdef CONFIG_ISDN_PPP | |
1500 | case ISDN_NET_ENCAP_SYNCPPP: | |
1501 | return isdn_ppp_dev_ioctl(dev, ifr, cmd); | |
1502 | #endif | |
1503 | case ISDN_NET_ENCAP_CISCOHDLCK: | |
1504 | return isdn_ciscohdlck_dev_ioctl(dev, ifr, cmd); | |
1505 | default: | |
1506 | return -EINVAL; | |
1507 | } | |
1508 | } | |
1509 | ||
1da177e4 LT |
1510 | /* called via cisco_timer.function */ |
1511 | static void | |
1512 | isdn_net_ciscohdlck_slarp_send_keepalive(unsigned long data) | |
1513 | { | |
1514 | isdn_net_local *lp = (isdn_net_local *) data; | |
1515 | struct sk_buff *skb; | |
1516 | unsigned char *p; | |
1517 | unsigned long last_cisco_myseq = lp->cisco_myseq; | |
1518 | int myseq_diff = 0; | |
1519 | ||
1520 | if (!(lp->flags & ISDN_NET_CONNECTED) || lp->dialstate) { | |
1521 | printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__); | |
1522 | return; | |
1523 | } | |
1524 | lp->cisco_myseq++; | |
1525 | ||
1526 | myseq_diff = (lp->cisco_myseq - lp->cisco_mineseen); | |
475be4d8 | 1527 | if ((lp->cisco_line_state) && ((myseq_diff >= 3) || (myseq_diff <= -3))) { |
1da177e4 LT |
1528 | /* line up -> down */ |
1529 | lp->cisco_line_state = 0; | |
475be4d8 JP |
1530 | printk(KERN_WARNING |
1531 | "UPDOWN: Line protocol on Interface %s," | |
1532 | " changed state to down\n", lp->netdev->dev->name); | |
25985edc | 1533 | /* should stop routing higher-level data across */ |
1da177e4 | 1534 | } else if ((!lp->cisco_line_state) && |
475be4d8 | 1535 | (myseq_diff >= 0) && (myseq_diff <= 2)) { |
1da177e4 LT |
1536 | /* line down -> up */ |
1537 | lp->cisco_line_state = 1; | |
475be4d8 JP |
1538 | printk(KERN_WARNING |
1539 | "UPDOWN: Line protocol on Interface %s," | |
1540 | " changed state to up\n", lp->netdev->dev->name); | |
25985edc | 1541 | /* restart routing higher-level data across */ |
1da177e4 LT |
1542 | } |
1543 | ||
1544 | if (lp->cisco_debserint) | |
475be4d8 JP |
1545 | printk(KERN_DEBUG "%s: HDLC " |
1546 | "myseq %lu, mineseen %lu%c, yourseen %lu, %s\n", | |
1547 | lp->netdev->dev->name, last_cisco_myseq, lp->cisco_mineseen, | |
1548 | ((last_cisco_myseq == lp->cisco_mineseen) ? '*' : 040), | |
1549 | lp->cisco_yourseq, | |
1550 | ((lp->cisco_line_state) ? "line up" : "line down")); | |
1da177e4 LT |
1551 | |
1552 | skb = isdn_net_ciscohdlck_alloc_skb(lp, 4 + 14); | |
1553 | if (!skb) | |
1554 | return; | |
1555 | ||
1556 | p = skb_put(skb, 4 + 14); | |
1557 | ||
1558 | /* cisco header */ | |
00bcd522 HH |
1559 | *(u8 *)(p + 0) = CISCO_ADDR_UNICAST; |
1560 | *(u8 *)(p + 1) = CISCO_CTRL; | |
1561 | *(__be16 *)(p + 2) = cpu_to_be16(CISCO_TYPE_SLARP); | |
1da177e4 LT |
1562 | |
1563 | /* slarp keepalive */ | |
00bcd522 HH |
1564 | *(__be32 *)(p + 4) = cpu_to_be32(CISCO_SLARP_KEEPALIVE); |
1565 | *(__be32 *)(p + 8) = cpu_to_be32(lp->cisco_myseq); | |
1566 | *(__be32 *)(p + 12) = cpu_to_be32(lp->cisco_yourseq); | |
06fe9fb4 | 1567 | *(__be16 *)(p + 16) = cpu_to_be16(0xffff); // reliability, always 0xffff |
00bcd522 | 1568 | p += 18; |
1da177e4 LT |
1569 | |
1570 | isdn_net_write_super(lp, skb); | |
1571 | ||
1572 | lp->cisco_timer.expires = jiffies + lp->cisco_keepalive_period * HZ; | |
475be4d8 | 1573 | |
1da177e4 LT |
1574 | add_timer(&lp->cisco_timer); |
1575 | } | |
1576 | ||
1577 | static void | |
1578 | isdn_net_ciscohdlck_slarp_send_request(isdn_net_local *lp) | |
1579 | { | |
1580 | struct sk_buff *skb; | |
1581 | unsigned char *p; | |
1582 | ||
1583 | skb = isdn_net_ciscohdlck_alloc_skb(lp, 4 + 14); | |
1584 | if (!skb) | |
1585 | return; | |
1586 | ||
1587 | p = skb_put(skb, 4 + 14); | |
1588 | ||
1589 | /* cisco header */ | |
00bcd522 HH |
1590 | *(u8 *)(p + 0) = CISCO_ADDR_UNICAST; |
1591 | *(u8 *)(p + 1) = CISCO_CTRL; | |
1592 | *(__be16 *)(p + 2) = cpu_to_be16(CISCO_TYPE_SLARP); | |
1da177e4 LT |
1593 | |
1594 | /* slarp request */ | |
00bcd522 HH |
1595 | *(__be32 *)(p + 4) = cpu_to_be32(CISCO_SLARP_REQUEST); |
1596 | *(__be32 *)(p + 8) = cpu_to_be32(0); // address | |
1597 | *(__be32 *)(p + 12) = cpu_to_be32(0); // netmask | |
1598 | *(__be16 *)(p + 16) = cpu_to_be16(0); // unused | |
1599 | p += 18; | |
1da177e4 LT |
1600 | |
1601 | isdn_net_write_super(lp, skb); | |
1602 | } | |
1603 | ||
475be4d8 | 1604 | static void |
1da177e4 LT |
1605 | isdn_net_ciscohdlck_connected(isdn_net_local *lp) |
1606 | { | |
1607 | lp->cisco_myseq = 0; | |
1608 | lp->cisco_mineseen = 0; | |
1609 | lp->cisco_yourseq = 0; | |
1610 | lp->cisco_keepalive_period = ISDN_TIMER_KEEPINT; | |
1611 | lp->cisco_last_slarp_in = 0; | |
1612 | lp->cisco_line_state = 0; | |
1613 | lp->cisco_debserint = 0; | |
1614 | ||
1615 | /* send slarp request because interface/seq.no.s reset */ | |
1616 | isdn_net_ciscohdlck_slarp_send_request(lp); | |
1617 | ||
1618 | init_timer(&lp->cisco_timer); | |
1619 | lp->cisco_timer.data = (unsigned long) lp; | |
1620 | lp->cisco_timer.function = isdn_net_ciscohdlck_slarp_send_keepalive; | |
1621 | lp->cisco_timer.expires = jiffies + lp->cisco_keepalive_period * HZ; | |
1622 | add_timer(&lp->cisco_timer); | |
1623 | } | |
1624 | ||
475be4d8 | 1625 | static void |
1da177e4 LT |
1626 | isdn_net_ciscohdlck_disconnected(isdn_net_local *lp) |
1627 | { | |
1628 | del_timer(&lp->cisco_timer); | |
1629 | } | |
1630 | ||
1631 | static void | |
1632 | isdn_net_ciscohdlck_slarp_send_reply(isdn_net_local *lp) | |
1633 | { | |
1634 | struct sk_buff *skb; | |
1635 | unsigned char *p; | |
1636 | struct in_device *in_dev = NULL; | |
a144ea4b AV |
1637 | __be32 addr = 0; /* local ipv4 address */ |
1638 | __be32 mask = 0; /* local netmask */ | |
1da177e4 | 1639 | |
d62a38d1 | 1640 | if ((in_dev = lp->netdev->dev->ip_ptr) != NULL) { |
1da177e4 LT |
1641 | /* take primary(first) address of interface */ |
1642 | struct in_ifaddr *ifa = in_dev->ifa_list; | |
1643 | if (ifa != NULL) { | |
1644 | addr = ifa->ifa_local; | |
1645 | mask = ifa->ifa_mask; | |
1646 | } | |
1647 | } | |
1648 | ||
1649 | skb = isdn_net_ciscohdlck_alloc_skb(lp, 4 + 14); | |
1650 | if (!skb) | |
1651 | return; | |
1652 | ||
1653 | p = skb_put(skb, 4 + 14); | |
1654 | ||
1655 | /* cisco header */ | |
00bcd522 HH |
1656 | *(u8 *)(p + 0) = CISCO_ADDR_UNICAST; |
1657 | *(u8 *)(p + 1) = CISCO_CTRL; | |
1658 | *(__be16 *)(p + 2) = cpu_to_be16(CISCO_TYPE_SLARP); | |
1da177e4 LT |
1659 | |
1660 | /* slarp reply, send own ip/netmask; if values are nonsense remote | |
1661 | * should think we are unable to provide it with an address via SLARP */ | |
00bcd522 | 1662 | *(__be32 *)(p + 4) = cpu_to_be32(CISCO_SLARP_REPLY); |
198d6ba4 DM |
1663 | *(__be32 *)(p + 8) = addr; // address |
1664 | *(__be32 *)(p + 12) = mask; // netmask | |
00bcd522 HH |
1665 | *(__be16 *)(p + 16) = cpu_to_be16(0); // unused |
1666 | p += 18; | |
1da177e4 LT |
1667 | |
1668 | isdn_net_write_super(lp, skb); | |
1669 | } | |
1670 | ||
1671 | static void | |
1672 | isdn_net_ciscohdlck_slarp_in(isdn_net_local *lp, struct sk_buff *skb) | |
1673 | { | |
1674 | unsigned char *p; | |
1675 | int period; | |
1676 | u32 code; | |
8cf14e38 HH |
1677 | u32 my_seq; |
1678 | u32 your_seq; | |
1679 | __be32 local; | |
1680 | __be32 *addr, *mask; | |
1da177e4 LT |
1681 | |
1682 | if (skb->len < 14) | |
1683 | return; | |
1684 | ||
1685 | p = skb->data; | |
00bcd522 HH |
1686 | code = be32_to_cpup((__be32 *)p); |
1687 | p += 4; | |
1688 | ||
1da177e4 LT |
1689 | switch (code) { |
1690 | case CISCO_SLARP_REQUEST: | |
1691 | lp->cisco_yourseq = 0; | |
1692 | isdn_net_ciscohdlck_slarp_send_reply(lp); | |
1693 | break; | |
1694 | case CISCO_SLARP_REPLY: | |
8cf14e38 HH |
1695 | addr = (__be32 *)p; |
1696 | mask = (__be32 *)(p + 4); | |
1697 | if (*mask != cpu_to_be32(0xfffffffc)) | |
1da177e4 | 1698 | goto slarp_reply_out; |
8cf14e38 HH |
1699 | if ((*addr & cpu_to_be32(3)) == cpu_to_be32(0) || |
1700 | (*addr & cpu_to_be32(3)) == cpu_to_be32(3)) | |
1da177e4 | 1701 | goto slarp_reply_out; |
8cf14e38 HH |
1702 | local = *addr ^ cpu_to_be32(3); |
1703 | printk(KERN_INFO "%s: got slarp reply: remote ip: %pI4, local ip: %pI4 mask: %pI4\n", | |
1704 | lp->netdev->dev->name, addr, &local, mask); | |
1da177e4 | 1705 | break; |
475be4d8 | 1706 | slarp_reply_out: |
8cf14e38 HH |
1707 | printk(KERN_INFO "%s: got invalid slarp reply (%pI4/%pI4) - ignored\n", |
1708 | lp->netdev->dev->name, addr, mask); | |
1da177e4 LT |
1709 | break; |
1710 | case CISCO_SLARP_KEEPALIVE: | |
1711 | period = (int)((jiffies - lp->cisco_last_slarp_in | |
475be4d8 | 1712 | + HZ / 2 - 1) / HZ); |
1da177e4 | 1713 | if (lp->cisco_debserint && |
475be4d8 JP |
1714 | (period != lp->cisco_keepalive_period) && |
1715 | lp->cisco_last_slarp_in) { | |
1da177e4 | 1716 | printk(KERN_DEBUG "%s: Keepalive period mismatch - " |
475be4d8 JP |
1717 | "is %d but should be %d.\n", |
1718 | lp->netdev->dev->name, period, | |
1719 | lp->cisco_keepalive_period); | |
1da177e4 LT |
1720 | } |
1721 | lp->cisco_last_slarp_in = jiffies; | |
00bcd522 HH |
1722 | my_seq = be32_to_cpup((__be32 *)(p + 0)); |
1723 | your_seq = be32_to_cpup((__be32 *)(p + 4)); | |
00bcd522 | 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; | |
475be4d8 JP |
1735 | u8 addr; |
1736 | u8 ctrl; | |
1737 | u16 type; | |
1738 | ||
1da177e4 LT |
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 | 1747 | skb_pull(skb, 4); |
475be4d8 | 1748 | |
1da177e4 LT |
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 " | |
475be4d8 JP |
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 | ||
475be4d8 | 1777 | out_free: |
1da177e4 LT |
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 | { | |
a17531fa | 1787 | isdn_net_local *lp = netdev_priv(ndev); |
1da177e4 LT |
1788 | isdn_net_local *olp = lp; /* original 'lp' */ |
1789 | #ifdef CONFIG_ISDN_X25 | |
475be4d8 | 1790 | struct concap_proto *cprot = lp->netdev->cprot; |
1da177e4 LT |
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; | |
a17531fa | 1801 | lp = 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) { | |
475be4d8 JP |
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; | |
1841 | skb->protocol = *(__be16 *)&(skb->data[0]); | |
1842 | skb_pull(skb, 2); | |
1843 | if (*(unsigned short *) skb->data == 0xFFFF) | |
1844 | skb->protocol = htons(ETH_P_802_3); | |
1845 | break; | |
1da177e4 | 1846 | #ifdef CONFIG_ISDN_PPP |
475be4d8 JP |
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; | |
1da177e4 LT |
1851 | #endif |
1852 | ||
475be4d8 | 1853 | default: |
1da177e4 | 1854 | #ifdef CONFIG_ISDN_X25 |
475be4d8 JP |
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 | }; | |
1da177e4 | 1861 | #endif /* CONFIG_ISDN_X25 */ |
475be4d8 JP |
1862 | printk(KERN_WARNING "%s: unknown encapsulation, dropping\n", |
1863 | lp->netdev->dev->name); | |
1864 | kfree_skb(skb); | |
1865 | return; | |
1da177e4 LT |
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 | 1903 | unsigned char *p; |
5a46e0f9 | 1904 | int len = 0; |
1da177e4 LT |
1905 | |
1906 | switch (lp->p_encap) { | |
475be4d8 JP |
1907 | case ISDN_NET_ENCAP_ETHER: |
1908 | len = eth_header(skb, dev, type, daddr, saddr, plen); | |
1909 | break; | |
1da177e4 | 1910 | #ifdef CONFIG_ISDN_PPP |
475be4d8 JP |
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; | |
1da177e4 | 1916 | #endif |
475be4d8 JP |
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 */ | |
1923 | *((__be16 *)skb_push(skb, 2)) = htons(type); | |
1924 | len = 2; | |
1925 | break; | |
1926 | case ISDN_NET_ENCAP_UIHDLC: | |
1927 | /* HDLC with UI-Frames (for ispa with -h1 option) */ | |
1928 | *((__be16 *)skb_push(skb, 2)) = htons(0x0103); | |
1929 | len = 2; | |
1930 | break; | |
1931 | case ISDN_NET_ENCAP_CISCOHDLC: | |
1932 | case ISDN_NET_ENCAP_CISCOHDLCK: | |
1933 | p = skb_push(skb, 4); | |
1934 | *(u8 *)(p + 0) = CISCO_ADDR_UNICAST; | |
1935 | *(u8 *)(p + 1) = CISCO_CTRL; | |
1936 | *(__be16 *)(p + 2) = cpu_to_be16(type); | |
1937 | p += 4; | |
1938 | len = 4; | |
1939 | break; | |
1da177e4 | 1940 | #ifdef CONFIG_ISDN_X25 |
475be4d8 JP |
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; | |
1da177e4 | 1946 | break; |
475be4d8 JP |
1947 | } |
1948 | break; | |
1da177e4 LT |
1949 | #endif /* CONFIG_ISDN_X25 */ |
1950 | } | |
1951 | return len; | |
1952 | } | |
1953 | ||
e69dd336 DM |
1954 | static int isdn_header_cache(const struct neighbour *neigh, struct hh_cache *hh, |
1955 | __be16 type) | |
3b04ddde SH |
1956 | { |
1957 | const struct net_device *dev = neigh->dev; | |
838361fe | 1958 | isdn_net_local *lp = netdev_priv(dev); |
3b04ddde SH |
1959 | |
1960 | if (lp->p_encap == ISDN_NET_ENCAP_ETHER) | |
e69dd336 | 1961 | return eth_header_cache(neigh, hh, type); |
3b04ddde SH |
1962 | return -1; |
1963 | } | |
1964 | ||
1965 | static void isdn_header_cache_update(struct hh_cache *hh, | |
1966 | const struct net_device *dev, | |
1967 | const unsigned char *haddr) | |
1968 | { | |
838361fe | 1969 | isdn_net_local *lp = netdev_priv(dev); |
3b04ddde | 1970 | if (lp->p_encap == ISDN_NET_ENCAP_ETHER) |
c19d0369 | 1971 | eth_header_cache_update(hh, dev, haddr); |
3b04ddde SH |
1972 | } |
1973 | ||
1974 | static const struct header_ops isdn_header_ops = { | |
1975 | .create = isdn_net_header, | |
3b04ddde SH |
1976 | .cache = isdn_header_cache, |
1977 | .cache_update = isdn_header_cache_update, | |
1978 | }; | |
1979 | ||
1da177e4 LT |
1980 | /* |
1981 | * Interface-setup. (just after registering a new interface) | |
1982 | */ | |
1983 | static int | |
1984 | isdn_net_init(struct net_device *ndev) | |
1985 | { | |
1986 | ushort max_hlhdr_len = 0; | |
3b04ddde | 1987 | int drvidx; |
1da177e4 | 1988 | |
1da177e4 LT |
1989 | /* |
1990 | * up till binding we ask the protocol layer to reserve as much | |
1991 | * as we might need for HL layer | |
1992 | */ | |
1993 | ||
1994 | for (drvidx = 0; drvidx < ISDN_MAX_DRIVERS; drvidx++) | |
1995 | if (dev->drv[drvidx]) | |
1996 | if (max_hlhdr_len < dev->drv[drvidx]->interface->hl_hdrlen) | |
1997 | max_hlhdr_len = dev->drv[drvidx]->interface->hl_hdrlen; | |
1998 | ||
1999 | ndev->hard_header_len = ETH_HLEN + max_hlhdr_len; | |
1da177e4 LT |
2000 | return 0; |
2001 | } | |
2002 | ||
2003 | static void | |
2004 | isdn_net_swapbind(int drvidx) | |
2005 | { | |
2006 | isdn_net_dev *p; | |
2007 | ||
2008 | #ifdef ISDN_DEBUG_NET_ICALL | |
2009 | printk(KERN_DEBUG "n_fi: swapping ch of %d\n", drvidx); | |
2010 | #endif | |
2011 | p = dev->netdev; | |
2012 | while (p) { | |
2013 | if (p->local->pre_device == drvidx) | |
2014 | switch (p->local->pre_channel) { | |
475be4d8 JP |
2015 | case 0: |
2016 | p->local->pre_channel = 1; | |
2017 | break; | |
2018 | case 1: | |
2019 | p->local->pre_channel = 0; | |
2020 | break; | |
1da177e4 LT |
2021 | } |
2022 | p = (isdn_net_dev *) p->next; | |
2023 | } | |
2024 | } | |
2025 | ||
2026 | static void | |
2027 | isdn_net_swap_usage(int i1, int i2) | |
2028 | { | |
2029 | int u1 = dev->usage[i1] & ISDN_USAGE_EXCLUSIVE; | |
2030 | int u2 = dev->usage[i2] & ISDN_USAGE_EXCLUSIVE; | |
2031 | ||
2032 | #ifdef ISDN_DEBUG_NET_ICALL | |
2033 | printk(KERN_DEBUG "n_fi: usage of %d and %d\n", i1, i2); | |
2034 | #endif | |
2035 | dev->usage[i1] &= ~ISDN_USAGE_EXCLUSIVE; | |
2036 | dev->usage[i1] |= u2; | |
2037 | dev->usage[i2] &= ~ISDN_USAGE_EXCLUSIVE; | |
2038 | dev->usage[i2] |= u1; | |
2039 | isdn_info_update(); | |
2040 | } | |
2041 | ||
2042 | /* | |
2043 | * An incoming call-request has arrived. | |
2044 | * Search the interface-chain for an appropriate interface. | |
2045 | * If found, connect the interface to the ISDN-channel and initiate | |
2046 | * D- and B-Channel-setup. If secure-flag is set, accept only | |
2047 | * configured phone-numbers. If callback-flag is set, initiate | |
2048 | * callback-dialing. | |
2049 | * | |
2050 | * Return-Value: 0 = No appropriate interface for this call. | |
2051 | * 1 = Call accepted | |
2052 | * 2 = Reject call, wait cbdelay, then call back | |
2053 | * 3 = Reject call | |
2054 | * 4 = Wait cbdelay, then call back | |
2055 | * 5 = No appropriate interface for this call, | |
2056 | * would eventually match if CID was longer. | |
2057 | */ | |
2058 | ||
2059 | int | |
2060 | isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup) | |
2061 | { | |
2062 | char *eaz; | |
2063 | int si1; | |
2064 | int si2; | |
2065 | int ematch; | |
2066 | int wret; | |
2067 | int swapped; | |
2068 | int sidx = 0; | |
2069 | u_long flags; | |
2070 | isdn_net_dev *p; | |
2071 | isdn_net_phone *n; | |
0f13864e | 2072 | char nr[ISDN_MSNLEN]; |
1da177e4 LT |
2073 | char *my_eaz; |
2074 | ||
2075 | /* Search name in netdev-chain */ | |
2076 | if (!setup->phone[0]) { | |
2077 | nr[0] = '0'; | |
2078 | nr[1] = '\0'; | |
2079 | printk(KERN_INFO "isdn_net: Incoming call without OAD, assuming '0'\n"); | |
2080 | } else | |
0f13864e | 2081 | strlcpy(nr, setup->phone, ISDN_MSNLEN); |
1da177e4 LT |
2082 | si1 = (int) setup->si1; |
2083 | si2 = (int) setup->si2; | |
2084 | if (!setup->eazmsn[0]) { | |
2085 | printk(KERN_WARNING "isdn_net: Incoming call without CPN, assuming '0'\n"); | |
2086 | eaz = "0"; | |
2087 | } else | |
2088 | eaz = setup->eazmsn; | |
2089 | if (dev->net_verbose > 1) | |
2090 | printk(KERN_INFO "isdn_net: call from %s,%d,%d -> %s\n", nr, si1, si2, eaz); | |
2091 | /* Accept DATA and VOICE calls at this stage | |
2092 | * local eaz is checked later for allowed call types | |
2093 | */ | |
2094 | if ((si1 != 7) && (si1 != 1)) { | |
2095 | if (dev->net_verbose > 1) | |
2096 | printk(KERN_INFO "isdn_net: Service-Indicator not 1 or 7, ignored\n"); | |
2097 | return 0; | |
2098 | } | |
2099 | n = (isdn_net_phone *) 0; | |
2100 | p = dev->netdev; | |
2101 | ematch = wret = swapped = 0; | |
2102 | #ifdef ISDN_DEBUG_NET_ICALL | |
2103 | printk(KERN_DEBUG "n_fi: di=%d ch=%d idx=%d usg=%d\n", di, ch, idx, | |
475be4d8 | 2104 | dev->usage[idx]); |
1da177e4 LT |
2105 | #endif |
2106 | while (p) { | |
2107 | int matchret; | |
2108 | isdn_net_local *lp = p->local; | |
2109 | ||
2110 | /* If last check has triggered as binding-swap, revert it */ | |
2111 | switch (swapped) { | |
475be4d8 JP |
2112 | case 2: |
2113 | isdn_net_swap_usage(idx, sidx); | |
2114 | /* fall through */ | |
2115 | case 1: | |
2116 | isdn_net_swapbind(di); | |
2117 | break; | |
1da177e4 LT |
2118 | } |
2119 | swapped = 0; | |
475be4d8 JP |
2120 | /* check acceptable call types for DOV */ |
2121 | my_eaz = isdn_map_eaz2msn(lp->msn, di); | |
2122 | if (si1 == 1) { /* it's a DOV call, check if we allow it */ | |
2123 | if (*my_eaz == 'v' || *my_eaz == 'V' || | |
1da177e4 | 2124 | *my_eaz == 'b' || *my_eaz == 'B') |
475be4d8 JP |
2125 | my_eaz++; /* skip to allow a match */ |
2126 | else | |
2127 | my_eaz = NULL; /* force non match */ | |
2128 | } else { /* it's a DATA call, check if we allow it */ | |
2129 | if (*my_eaz == 'b' || *my_eaz == 'B') | |
2130 | my_eaz++; /* skip to allow a match */ | |
2131 | } | |
2132 | if (my_eaz) | |
2133 | matchret = isdn_msncmp(eaz, my_eaz); | |
2134 | else | |
2135 | matchret = 1; | |
2136 | if (!matchret) | |
2137 | ematch = 1; | |
1da177e4 LT |
2138 | |
2139 | /* Remember if more numbers eventually can match */ | |
2140 | if (matchret > wret) | |
2141 | wret = matchret; | |
2142 | #ifdef ISDN_DEBUG_NET_ICALL | |
2143 | printk(KERN_DEBUG "n_fi: if='%s', l.msn=%s, l.flags=%d, l.dstate=%d\n", | |
faca94ff | 2144 | p->dev->name, lp->msn, lp->flags, lp->dialstate); |
1da177e4 LT |
2145 | #endif |
2146 | if ((!matchret) && /* EAZ is matching */ | |
2147 | (((!(lp->flags & ISDN_NET_CONNECTED)) && /* but not connected */ | |
2148 | (USG_NONE(dev->usage[idx]))) || /* and ch. unused or */ | |
2149 | ((((lp->dialstate == 4) || (lp->dialstate == 12)) && /* if dialing */ | |
2150 | (!(lp->flags & ISDN_NET_CALLBACK))) /* but no callback */ | |
475be4d8 JP |
2151 | ))) |
2152 | { | |
1da177e4 LT |
2153 | #ifdef ISDN_DEBUG_NET_ICALL |
2154 | printk(KERN_DEBUG "n_fi: match1, pdev=%d pch=%d\n", | |
2155 | lp->pre_device, lp->pre_channel); | |
2156 | #endif | |
2157 | if (dev->usage[idx] & ISDN_USAGE_EXCLUSIVE) { | |
2158 | if ((lp->pre_channel != ch) || | |
2159 | (lp->pre_device != di)) { | |
2160 | /* Here we got a problem: | |
2161 | * If using an ICN-Card, an incoming call is always signaled on | |
2162 | * on the first channel of the card, if both channels are | |
2163 | * down. However this channel may be bound exclusive. If the | |
2164 | * second channel is free, this call should be accepted. | |
2165 | * The solution is horribly but it runs, so what: | |
2166 | * We exchange the exclusive bindings of the two channels, the | |
2167 | * corresponding variables in the interface-structs. | |
2168 | */ | |
2169 | if (ch == 0) { | |
2170 | sidx = isdn_dc2minor(di, 1); | |
2171 | #ifdef ISDN_DEBUG_NET_ICALL | |
2172 | printk(KERN_DEBUG "n_fi: ch is 0\n"); | |
2173 | #endif | |
2174 | if (USG_NONE(dev->usage[sidx])) { | |
2175 | /* Second Channel is free, now see if it is bound | |
2176 | * exclusive too. */ | |
2177 | if (dev->usage[sidx] & ISDN_USAGE_EXCLUSIVE) { | |
2178 | #ifdef ISDN_DEBUG_NET_ICALL | |
2179 | printk(KERN_DEBUG "n_fi: 2nd channel is down and bound\n"); | |
2180 | #endif | |
2181 | /* Yes, swap bindings only, if the original | |
2182 | * binding is bound to channel 1 of this driver */ | |
2183 | if ((lp->pre_device == di) && | |
2184 | (lp->pre_channel == 1)) { | |
2185 | isdn_net_swapbind(di); | |
2186 | swapped = 1; | |
2187 | } else { | |
2188 | /* ... else iterate next device */ | |
2189 | p = (isdn_net_dev *) p->next; | |
2190 | continue; | |
2191 | } | |
2192 | } else { | |
2193 | #ifdef ISDN_DEBUG_NET_ICALL | |
2194 | printk(KERN_DEBUG "n_fi: 2nd channel is down and unbound\n"); | |
2195 | #endif | |
2196 | /* No, swap always and swap excl-usage also */ | |
2197 | isdn_net_swap_usage(idx, sidx); | |
2198 | isdn_net_swapbind(di); | |
2199 | swapped = 2; | |
2200 | } | |
2201 | /* Now check for exclusive binding again */ | |
2202 | #ifdef ISDN_DEBUG_NET_ICALL | |
2203 | printk(KERN_DEBUG "n_fi: final check\n"); | |
2204 | #endif | |
2205 | if ((dev->usage[idx] & ISDN_USAGE_EXCLUSIVE) && | |
2206 | ((lp->pre_channel != ch) || | |
2207 | (lp->pre_device != di))) { | |
2208 | #ifdef ISDN_DEBUG_NET_ICALL | |
2209 | printk(KERN_DEBUG "n_fi: final check failed\n"); | |
2210 | #endif | |
2211 | p = (isdn_net_dev *) p->next; | |
2212 | continue; | |
2213 | } | |
2214 | } | |
2215 | } else { | |
2216 | /* We are already on the second channel, so nothing to do */ | |
2217 | #ifdef ISDN_DEBUG_NET_ICALL | |
2218 | printk(KERN_DEBUG "n_fi: already on 2nd channel\n"); | |
2219 | #endif | |
2220 | } | |
2221 | } | |
2222 | } | |
2223 | #ifdef ISDN_DEBUG_NET_ICALL | |
2224 | printk(KERN_DEBUG "n_fi: match2\n"); | |
2225 | #endif | |
2226 | n = lp->phone[0]; | |
2227 | if (lp->flags & ISDN_NET_SECURE) { | |
2228 | while (n) { | |
2229 | if (!isdn_msncmp(nr, n->num)) | |
2230 | break; | |
2231 | n = (isdn_net_phone *) n->next; | |
2232 | } | |
2233 | } | |
2234 | if (n || (!(lp->flags & ISDN_NET_SECURE))) { | |
2235 | #ifdef ISDN_DEBUG_NET_ICALL | |
2236 | printk(KERN_DEBUG "n_fi: match3\n"); | |
2237 | #endif | |
2238 | /* matching interface found */ | |
2239 | ||
2240 | /* | |
2241 | * Is the state STOPPED? | |
2242 | * If so, no dialin is allowed, | |
2243 | * so reject actively. | |
2244 | * */ | |
2245 | if (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF) { | |
2246 | printk(KERN_INFO "incoming call, interface %s `stopped' -> rejected\n", | |
faca94ff | 2247 | p->dev->name); |
1da177e4 LT |
2248 | return 3; |
2249 | } | |
2250 | /* | |
2251 | * Is the interface up? | |
2252 | * If not, reject the call actively. | |
2253 | */ | |
2254 | if (!isdn_net_device_started(p)) { | |
2255 | printk(KERN_INFO "%s: incoming call, interface down -> rejected\n", | |
faca94ff | 2256 | p->dev->name); |
1da177e4 LT |
2257 | return 3; |
2258 | } | |
2259 | /* Interface is up, now see if it's a slave. If so, see if | |
2260 | * it's master and parent slave is online. If not, reject the call. | |
2261 | */ | |
2262 | if (lp->master) { | |
838361fe | 2263 | isdn_net_local *mlp = ISDN_MASTER_PRIV(lp); |
faca94ff KK |
2264 | printk(KERN_DEBUG "ICALLslv: %s\n", p->dev->name); |
2265 | printk(KERN_DEBUG "master=%s\n", lp->master->name); | |
1da177e4 LT |
2266 | if (mlp->flags & ISDN_NET_CONNECTED) { |
2267 | printk(KERN_DEBUG "master online\n"); | |
2268 | /* Master is online, find parent-slave (master if first slave) */ | |
2269 | while (mlp->slave) { | |
838361fe | 2270 | if (ISDN_SLAVE_PRIV(mlp) == lp) |
1da177e4 | 2271 | break; |
838361fe | 2272 | mlp = ISDN_SLAVE_PRIV(mlp); |
1da177e4 LT |
2273 | } |
2274 | } else | |
2275 | printk(KERN_DEBUG "master offline\n"); | |
2276 | /* Found parent, if it's offline iterate next device */ | |
2277 | printk(KERN_DEBUG "mlpf: %d\n", mlp->flags & ISDN_NET_CONNECTED); | |
2278 | if (!(mlp->flags & ISDN_NET_CONNECTED)) { | |
2279 | p = (isdn_net_dev *) p->next; | |
2280 | continue; | |
2281 | } | |
475be4d8 | 2282 | } |
1da177e4 LT |
2283 | if (lp->flags & ISDN_NET_CALLBACK) { |
2284 | int chi; | |
2285 | /* | |
2286 | * Is the state MANUAL? | |
2287 | * If so, no callback can be made, | |
2288 | * so reject actively. | |
2289 | * */ | |
2290 | if (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF) { | |
2291 | printk(KERN_INFO "incoming call for callback, interface %s `off' -> rejected\n", | |
faca94ff | 2292 | p->dev->name); |
1da177e4 LT |
2293 | return 3; |
2294 | } | |
2295 | printk(KERN_DEBUG "%s: call from %s -> %s, start callback\n", | |
faca94ff | 2296 | p->dev->name, nr, eaz); |
1da177e4 LT |
2297 | if (lp->phone[1]) { |
2298 | /* Grab a free ISDN-Channel */ | |
2299 | spin_lock_irqsave(&dev->lock, flags); | |
475be4d8 JP |
2300 | if ((chi = |
2301 | isdn_get_free_channel( | |
2302 | ISDN_USAGE_NET, | |
2303 | lp->l2_proto, | |
2304 | lp->l3_proto, | |
2305 | lp->pre_device, | |
2306 | lp->pre_channel, | |
2307 | lp->msn) | |
2308 | ) < 0) { | |
1da177e4 | 2309 | |
faca94ff | 2310 | printk(KERN_WARNING "isdn_net_find_icall: No channel for %s\n", |
475be4d8 | 2311 | p->dev->name); |
1da177e4 LT |
2312 | spin_unlock_irqrestore(&dev->lock, flags); |
2313 | return 0; | |
2314 | } | |
2315 | /* Setup dialstate. */ | |
2316 | lp->dtimer = 0; | |
2317 | lp->dialstate = 11; | |
2318 | /* Connect interface with channel */ | |
2319 | isdn_net_bind_channel(lp, chi); | |
2320 | #ifdef CONFIG_ISDN_PPP | |
2321 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) | |
2322 | if (isdn_ppp_bind(lp) < 0) { | |
2323 | spin_unlock_irqrestore(&dev->lock, flags); | |
2324 | isdn_net_unbind_channel(lp); | |
2325 | return 0; | |
2326 | } | |
2327 | #endif | |
2328 | spin_unlock_irqrestore(&dev->lock, flags); | |
2329 | /* Initiate dialing by returning 2 or 4 */ | |
2330 | return (lp->flags & ISDN_NET_CBHUP) ? 2 : 4; | |
2331 | } else | |
faca94ff | 2332 | printk(KERN_WARNING "isdn_net: %s: No phone number\n", |
475be4d8 | 2333 | p->dev->name); |
1da177e4 LT |
2334 | return 0; |
2335 | } else { | |
faca94ff | 2336 | printk(KERN_DEBUG "%s: call from %s -> %s accepted\n", |
475be4d8 | 2337 | p->dev->name, nr, eaz); |
1da177e4 LT |
2338 | /* if this interface is dialing, it does it probably on a different |
2339 | device, so free this device */ | |
2340 | if ((lp->dialstate == 4) || (lp->dialstate == 12)) { | |
2341 | #ifdef CONFIG_ISDN_PPP | |
2342 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) | |
2343 | isdn_ppp_free(lp); | |
2344 | #endif | |
2345 | isdn_net_lp_disconnected(lp); | |
2346 | isdn_free_channel(lp->isdn_device, lp->isdn_channel, | |
475be4d8 | 2347 | ISDN_USAGE_NET); |
1da177e4 LT |
2348 | } |
2349 | spin_lock_irqsave(&dev->lock, flags); | |
2350 | dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE; | |
2351 | dev->usage[idx] |= ISDN_USAGE_NET; | |
2352 | strcpy(dev->num[idx], nr); | |
2353 | isdn_info_update(); | |
2354 | dev->st_netdev[idx] = lp->netdev; | |
2355 | lp->isdn_device = di; | |
2356 | lp->isdn_channel = ch; | |
2357 | lp->ppp_slot = -1; | |
2358 | lp->flags |= ISDN_NET_CONNECTED; | |
2359 | lp->dialstate = 7; | |
2360 | lp->dtimer = 0; | |
2361 | lp->outgoing = 0; | |
2362 | lp->huptimer = 0; | |
2363 | lp->hupflags |= ISDN_WAITCHARGE; | |
2364 | lp->hupflags &= ~ISDN_HAVECHARGE; | |
2365 | #ifdef CONFIG_ISDN_PPP | |
2366 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) { | |
2367 | if (isdn_ppp_bind(lp) < 0) { | |
2368 | isdn_net_unbind_channel(lp); | |
2369 | spin_unlock_irqrestore(&dev->lock, flags); | |
2370 | return 0; | |
2371 | } | |
2372 | } | |
2373 | #endif | |
2374 | spin_unlock_irqrestore(&dev->lock, flags); | |
2375 | return 1; | |
2376 | } | |
2377 | } | |
2378 | } | |
2379 | p = (isdn_net_dev *) p->next; | |
2380 | } | |
2381 | /* If none of configured EAZ/MSN matched and not verbose, be silent */ | |
2382 | if (!ematch || dev->net_verbose) | |
2383 | printk(KERN_INFO "isdn_net: call from %s -> %d %s ignored\n", nr, di, eaz); | |
475be4d8 | 2384 | return (wret == 2) ? 5 : 0; |
1da177e4 LT |
2385 | } |
2386 | ||
2387 | /* | |
2388 | * Search list of net-interfaces for an interface with given name. | |
2389 | */ | |
2390 | isdn_net_dev * | |
2391 | isdn_net_findif(char *name) | |
2392 | { | |
2393 | isdn_net_dev *p = dev->netdev; | |
2394 | ||
2395 | while (p) { | |
faca94ff | 2396 | if (!strcmp(p->dev->name, name)) |
1da177e4 LT |
2397 | return p; |
2398 | p = (isdn_net_dev *) p->next; | |
2399 | } | |
2400 | return (isdn_net_dev *) NULL; | |
2401 | } | |
2402 | ||
2403 | /* | |
2404 | * Force a net-interface to dial out. | |
2405 | * This is called from the userlevel-routine below or | |
2406 | * from isdn_net_start_xmit(). | |
2407 | */ | |
3e206b0a | 2408 | static int |
475be4d8 | 2409 | isdn_net_force_dial_lp(isdn_net_local *lp) |
1da177e4 LT |
2410 | { |
2411 | if ((!(lp->flags & ISDN_NET_CONNECTED)) && !lp->dialstate) { | |
2412 | int chi; | |
2413 | if (lp->phone[1]) { | |
2414 | ulong flags; | |
2415 | ||
2416 | /* Grab a free ISDN-Channel */ | |
2417 | spin_lock_irqsave(&dev->lock, flags); | |
2418 | if ((chi = isdn_get_free_channel( | |
475be4d8 JP |
2419 | ISDN_USAGE_NET, |
2420 | lp->l2_proto, | |
2421 | lp->l3_proto, | |
2422 | lp->pre_device, | |
2423 | lp->pre_channel, | |
2424 | lp->msn)) < 0) { | |
faca94ff | 2425 | printk(KERN_WARNING "isdn_net_force_dial: No channel for %s\n", |
475be4d8 | 2426 | lp->netdev->dev->name); |
1da177e4 LT |
2427 | spin_unlock_irqrestore(&dev->lock, flags); |
2428 | return -EAGAIN; | |
2429 | } | |
2430 | lp->dialstate = 1; | |
2431 | /* Connect interface with channel */ | |
2432 | isdn_net_bind_channel(lp, chi); | |
2433 | #ifdef CONFIG_ISDN_PPP | |
2434 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) | |
2435 | if (isdn_ppp_bind(lp) < 0) { | |
2436 | isdn_net_unbind_channel(lp); | |
2437 | spin_unlock_irqrestore(&dev->lock, flags); | |
2438 | return -EAGAIN; | |
2439 | } | |
2440 | #endif | |
2441 | /* Initiate dialing */ | |
2442 | spin_unlock_irqrestore(&dev->lock, flags); | |
2443 | isdn_net_dial(); | |
2444 | return 0; | |
2445 | } else | |
2446 | return -EINVAL; | |
2447 | } else | |
2448 | return -EBUSY; | |
2449 | } | |
2450 | ||
2451 | /* | |
2452 | * This is called from certain upper protocol layers (multilink ppp | |
2453 | * and x25iface encapsulation module) that want to initiate dialing | |
2454 | * themselves. | |
2455 | */ | |
2456 | int | |
475be4d8 | 2457 | isdn_net_dial_req(isdn_net_local *lp) |
1da177e4 LT |
2458 | { |
2459 | /* is there a better error code? */ | |
2460 | if (!(ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_AUTO)) return -EBUSY; | |
2461 | ||
2462 | return isdn_net_force_dial_lp(lp); | |
2463 | } | |
2464 | ||
2465 | /* | |
2466 | * Force a net-interface to dial out. | |
2467 | * This is always called from within userspace (ISDN_IOCTL_NET_DIAL). | |
2468 | */ | |
2469 | int | |
2470 | isdn_net_force_dial(char *name) | |
2471 | { | |
2472 | isdn_net_dev *p = isdn_net_findif(name); | |
2473 | ||
2474 | if (!p) | |
2475 | return -ENODEV; | |
2476 | return (isdn_net_force_dial_lp(p->local)); | |
2477 | } | |
2478 | ||
d700555b SH |
2479 | /* The ISDN-specific entries in the device structure. */ |
2480 | static const struct net_device_ops isdn_netdev_ops = { | |
2481 | .ndo_init = isdn_net_init, | |
2482 | .ndo_open = isdn_net_open, | |
2483 | .ndo_stop = isdn_net_close, | |
2484 | .ndo_do_ioctl = isdn_net_ioctl, | |
2485 | ||
d700555b SH |
2486 | .ndo_start_xmit = isdn_net_start_xmit, |
2487 | .ndo_get_stats = isdn_net_get_stats, | |
2488 | .ndo_tx_timeout = isdn_net_tx_timeout, | |
2489 | }; | |
2490 | ||
d62a38d1 KK |
2491 | /* |
2492 | * Helper for alloc_netdev() | |
2493 | */ | |
2494 | static void _isdn_setup(struct net_device *dev) | |
2495 | { | |
838361fe | 2496 | isdn_net_local *lp = netdev_priv(dev); |
d62a38d1 | 2497 | |
d700555b SH |
2498 | ether_setup(dev); |
2499 | ||
d700555b | 2500 | /* Setup the generic properties */ |
475be4d8 | 2501 | dev->flags = IFF_NOARP | IFF_POINTOPOINT; |
550fd08c NH |
2502 | |
2503 | /* isdn prepends a header in the tx path, can't share skbs */ | |
2504 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; | |
d700555b SH |
2505 | dev->header_ops = NULL; |
2506 | dev->netdev_ops = &isdn_netdev_ops; | |
2507 | ||
2508 | /* for clients with MPPP maybe higher values better */ | |
2509 | dev->tx_queue_len = 30; | |
2510 | ||
d62a38d1 KK |
2511 | lp->p_encap = ISDN_NET_ENCAP_RAWIP; |
2512 | lp->magic = ISDN_NET_MAGIC; | |
2513 | lp->last = lp; | |
2514 | lp->next = lp; | |
2515 | lp->isdn_device = -1; | |
2516 | lp->isdn_channel = -1; | |
2517 | lp->pre_device = -1; | |
2518 | lp->pre_channel = -1; | |
2519 | lp->exclusive = -1; | |
2520 | lp->ppp_slot = -1; | |
2521 | lp->pppbind = -1; | |
2522 | skb_queue_head_init(&lp->super_tx_queue); | |
2523 | lp->l2_proto = ISDN_PROTO_L2_X75I; | |
2524 | lp->l3_proto = ISDN_PROTO_L3_TRANS; | |
2525 | lp->triggercps = 6000; | |
2526 | lp->slavedelay = 10 * HZ; | |
2527 | lp->hupflags = ISDN_INHUP; /* Do hangup even on incoming calls */ | |
2528 | lp->onhtime = 10; /* Default hangup-time for saving costs */ | |
2529 | lp->dialmax = 1; | |
2530 | /* Hangup before Callback, manual dial */ | |
2531 | lp->flags = ISDN_NET_CBHUP | ISDN_NET_DM_MANUAL; | |
2532 | lp->cbdelay = 25; /* Wait 5 secs before Callback */ | |
2533 | lp->dialtimeout = -1; /* Infinite Dial-Timeout */ | |
2534 | lp->dialwait = 5 * HZ; /* Wait 5 sec. after failed dial */ | |
2535 | lp->dialstarted = 0; /* Jiffies of last dial-start */ | |
2536 | lp->dialwait_timer = 0; /* Jiffies of earliest next dial-start */ | |
2537 | } | |
2538 | ||
1da177e4 LT |
2539 | /* |
2540 | * Allocate a new network-interface and initialize its data structures. | |
2541 | */ | |
2542 | char * | |
2543 | isdn_net_new(char *name, struct net_device *master) | |
2544 | { | |
2545 | isdn_net_dev *netdev; | |
2546 | ||
2547 | /* Avoid creating an existing interface */ | |
2548 | if (isdn_net_findif(name)) { | |
2549 | printk(KERN_WARNING "isdn_net: interface %s already exists\n", name); | |
2550 | return NULL; | |
2551 | } | |
d62a38d1 | 2552 | if (name == NULL) |
faca94ff | 2553 | return NULL; |
41f96935 | 2554 | if (!(netdev = kzalloc(sizeof(isdn_net_dev), GFP_KERNEL))) { |
1da177e4 LT |
2555 | printk(KERN_WARNING "isdn_net: Could not allocate net-device\n"); |
2556 | return NULL; | |
2557 | } | |
c835a677 TG |
2558 | netdev->dev = alloc_netdev(sizeof(isdn_net_local), name, |
2559 | NET_NAME_UNKNOWN, _isdn_setup); | |
d62a38d1 KK |
2560 | if (!netdev->dev) { |
2561 | printk(KERN_WARNING "isdn_net: Could not allocate network device\n"); | |
1da177e4 LT |
2562 | kfree(netdev); |
2563 | return NULL; | |
2564 | } | |
838361fe | 2565 | netdev->local = netdev_priv(netdev->dev); |
d700555b | 2566 | |
1da177e4 LT |
2567 | if (master) { |
2568 | /* Device shall be a slave */ | |
838361fe | 2569 | struct net_device *p = MASTER_TO_SLAVE(master); |
1da177e4 LT |
2570 | struct net_device *q = master; |
2571 | ||
2572 | netdev->local->master = master; | |
2573 | /* Put device at end of slave-chain */ | |
2574 | while (p) { | |
2575 | q = p; | |
838361fe | 2576 | p = MASTER_TO_SLAVE(p); |
1da177e4 | 2577 | } |
838361fe | 2578 | MASTER_TO_SLAVE(q) = netdev->dev; |
1da177e4 LT |
2579 | } else { |
2580 | /* Device shall be a master */ | |
2581 | /* | |
2582 | * Watchdog timer (currently) for master only. | |
2583 | */ | |
d62a38d1 KK |
2584 | netdev->dev->watchdog_timeo = ISDN_NET_TX_TIMEOUT; |
2585 | if (register_netdev(netdev->dev) != 0) { | |
1da177e4 | 2586 | printk(KERN_WARNING "isdn_net: Could not register net-device\n"); |
d62a38d1 | 2587 | free_netdev(netdev->dev); |
1da177e4 LT |
2588 | kfree(netdev); |
2589 | return NULL; | |
2590 | } | |
2591 | } | |
1da177e4 LT |
2592 | netdev->queue = netdev->local; |
2593 | spin_lock_init(&netdev->queue_lock); | |
2594 | ||
1da177e4 | 2595 | netdev->local->netdev = netdev; |
1da177e4 | 2596 | |
c4028958 | 2597 | INIT_WORK(&netdev->local->tqueue, isdn_net_softint); |
1da177e4 LT |
2598 | spin_lock_init(&netdev->local->xmit_lock); |
2599 | ||
1da177e4 LT |
2600 | /* Put into to netdev-chain */ |
2601 | netdev->next = (void *) dev->netdev; | |
2602 | dev->netdev = netdev; | |
d62a38d1 | 2603 | return netdev->dev->name; |
1da177e4 LT |
2604 | } |
2605 | ||
2606 | char * | |
2607 | isdn_net_newslave(char *parm) | |
2608 | { | |
2609 | char *p = strchr(parm, ','); | |
2610 | isdn_net_dev *n; | |
2611 | char newname[10]; | |
2612 | ||
2613 | if (p) { | |
2614 | /* Slave-Name MUST not be empty */ | |
2615 | if (!strlen(p + 1)) | |
2616 | return NULL; | |
2617 | strcpy(newname, p + 1); | |
2618 | *p = 0; | |
2619 | /* Master must already exist */ | |
2620 | if (!(n = isdn_net_findif(parm))) | |
2621 | return NULL; | |
2622 | /* Master must be a real interface, not a slave */ | |
2623 | if (n->local->master) | |
2624 | return NULL; | |
2625 | /* Master must not be started yet */ | |
475be4d8 | 2626 | if (isdn_net_device_started(n)) |
1da177e4 | 2627 | return NULL; |
d62a38d1 | 2628 | return (isdn_net_new(newname, n->dev)); |
1da177e4 LT |
2629 | } |
2630 | return NULL; | |
2631 | } | |
2632 | ||
2633 | /* | |
2634 | * Set interface-parameters. | |
2635 | * Always set all parameters, so the user-level application is responsible | |
2636 | * for not overwriting existing setups. It has to get the current | |
2637 | * setup first, if only selected parameters are to be changed. | |
2638 | */ | |
2639 | int | |
475be4d8 | 2640 | isdn_net_setcfg(isdn_net_ioctl_cfg *cfg) |
1da177e4 LT |
2641 | { |
2642 | isdn_net_dev *p = isdn_net_findif(cfg->name); | |
2643 | ulong features; | |
2644 | int i; | |
2645 | int drvidx; | |
2646 | int chidx; | |
2647 | char drvid[25]; | |
2648 | ||
2649 | if (p) { | |
2650 | isdn_net_local *lp = p->local; | |
2651 | ||
2652 | /* See if any registered driver supports the features we want */ | |
2653 | features = ((1 << cfg->l2_proto) << ISDN_FEATURE_L2_SHIFT) | | |
2654 | ((1 << cfg->l3_proto) << ISDN_FEATURE_L3_SHIFT); | |
2655 | for (i = 0; i < ISDN_MAX_DRIVERS; i++) | |
2656 | if (dev->drv[i]) | |
2657 | if ((dev->drv[i]->interface->features & features) == features) | |
2658 | break; | |
2659 | if (i == ISDN_MAX_DRIVERS) { | |
2660 | printk(KERN_WARNING "isdn_net: No driver with selected features\n"); | |
2661 | return -ENODEV; | |
2662 | } | |
475be4d8 | 2663 | if (lp->p_encap != cfg->p_encap) { |
1da177e4 | 2664 | #ifdef CONFIG_ISDN_X25 |
475be4d8 | 2665 | struct concap_proto *cprot = p->cprot; |
1da177e4 LT |
2666 | #endif |
2667 | if (isdn_net_device_started(p)) { | |
2668 | printk(KERN_WARNING "%s: cannot change encap when if is up\n", | |
faca94ff | 2669 | p->dev->name); |
1da177e4 LT |
2670 | return -EBUSY; |
2671 | } | |
2672 | #ifdef CONFIG_ISDN_X25 | |
475be4d8 JP |
2673 | if (cprot && cprot->pops) |
2674 | cprot->pops->proto_del(cprot); | |
2675 | p->cprot = NULL; | |
2676 | lp->dops = NULL; | |
1da177e4 | 2677 | /* ... , prepare for configuration of new one ... */ |
475be4d8 | 2678 | switch (cfg->p_encap) { |
1da177e4 | 2679 | case ISDN_NET_ENCAP_X25IFACE: |
475be4d8 | 2680 | lp->dops = &isdn_concap_reliable_dl_dops; |
1da177e4 LT |
2681 | } |
2682 | /* ... and allocate new one ... */ | |
475be4d8 | 2683 | p->cprot = isdn_concap_new(cfg->p_encap); |
1da177e4 LT |
2684 | /* p -> cprot == NULL now if p_encap is not supported |
2685 | by means of the concap_proto mechanism */ | |
2686 | /* the protocol is not configured yet; this will | |
2687 | happen later when isdn_net_reset() is called */ | |
2688 | #endif | |
2689 | } | |
475be4d8 | 2690 | switch (cfg->p_encap) { |
1da177e4 LT |
2691 | case ISDN_NET_ENCAP_SYNCPPP: |
2692 | #ifndef CONFIG_ISDN_PPP | |
2693 | printk(KERN_WARNING "%s: SyncPPP support not configured\n", | |
faca94ff | 2694 | p->dev->name); |
1da177e4 LT |
2695 | return -EINVAL; |
2696 | #else | |
d62a38d1 KK |
2697 | p->dev->type = ARPHRD_PPP; /* change ARP type */ |
2698 | p->dev->addr_len = 0; | |
1da177e4 LT |
2699 | #endif |
2700 | break; | |
2701 | case ISDN_NET_ENCAP_X25IFACE: | |
2702 | #ifndef CONFIG_ISDN_X25 | |
2703 | printk(KERN_WARNING "%s: isdn-x25 support not configured\n", | |
c749b013 | 2704 | p->dev->name); |
1da177e4 LT |
2705 | return -EINVAL; |
2706 | #else | |
d62a38d1 KK |
2707 | p->dev->type = ARPHRD_X25; /* change ARP type */ |
2708 | p->dev->addr_len = 0; | |
1da177e4 LT |
2709 | #endif |
2710 | break; | |
2711 | case ISDN_NET_ENCAP_CISCOHDLCK: | |
1da177e4 LT |
2712 | break; |
2713 | default: | |
475be4d8 JP |
2714 | if (cfg->p_encap >= 0 && |
2715 | cfg->p_encap <= ISDN_NET_ENCAP_MAX_ENCAP) | |
1da177e4 LT |
2716 | break; |
2717 | printk(KERN_WARNING | |
2718 | "%s: encapsulation protocol %d not supported\n", | |
faca94ff | 2719 | p->dev->name, cfg->p_encap); |
1da177e4 LT |
2720 | return -EINVAL; |
2721 | } | |
2722 | if (strlen(cfg->drvid)) { | |
2723 | /* A bind has been requested ... */ | |
2724 | char *c, | |
475be4d8 | 2725 | *e; |
1da177e4 | 2726 | |
5dc5503f | 2727 | if (strnlen(cfg->drvid, sizeof(cfg->drvid)) == |
475be4d8 | 2728 | sizeof(cfg->drvid)) |
5dc5503f | 2729 | return -EINVAL; |
1da177e4 LT |
2730 | drvidx = -1; |
2731 | chidx = -1; | |
2732 | strcpy(drvid, cfg->drvid); | |
2733 | if ((c = strchr(drvid, ','))) { | |
2734 | /* The channel-number is appended to the driver-Id with a comma */ | |
2735 | chidx = (int) simple_strtoul(c + 1, &e, 10); | |
2736 | if (e == c) | |
2737 | chidx = -1; | |
2738 | *c = '\0'; | |
2739 | } | |
2740 | for (i = 0; i < ISDN_MAX_DRIVERS; i++) | |
2741 | /* Lookup driver-Id in array */ | |
2742 | if (!(strcmp(dev->drvid[i], drvid))) { | |
2743 | drvidx = i; | |
2744 | break; | |
2745 | } | |
2746 | if ((drvidx == -1) || (chidx == -1)) | |
2747 | /* Either driver-Id or channel-number invalid */ | |
2748 | return -ENODEV; | |
2749 | } else { | |
2750 | /* Parameters are valid, so get them */ | |
2751 | drvidx = lp->pre_device; | |
2752 | chidx = lp->pre_channel; | |
2753 | } | |
2754 | if (cfg->exclusive > 0) { | |
2755 | unsigned long flags; | |
2756 | ||
2757 | /* If binding is exclusive, try to grab the channel */ | |
2758 | spin_lock_irqsave(&dev->lock, flags); | |
2759 | if ((i = isdn_get_free_channel(ISDN_USAGE_NET, | |
475be4d8 JP |
2760 | lp->l2_proto, lp->l3_proto, drvidx, |
2761 | chidx, lp->msn)) < 0) { | |
1da177e4 LT |
2762 | /* Grab failed, because desired channel is in use */ |
2763 | lp->exclusive = -1; | |
2764 | spin_unlock_irqrestore(&dev->lock, flags); | |
2765 | return -EBUSY; | |
2766 | } | |
2767 | /* All went ok, so update isdninfo */ | |
2768 | dev->usage[i] = ISDN_USAGE_EXCLUSIVE; | |
2769 | isdn_info_update(); | |
2770 | spin_unlock_irqrestore(&dev->lock, flags); | |
2771 | lp->exclusive = i; | |
2772 | } else { | |
2773 | /* Non-exclusive binding or unbind. */ | |
2774 | lp->exclusive = -1; | |
2775 | if ((lp->pre_device != -1) && (cfg->exclusive == -1)) { | |
2776 | isdn_unexclusive_channel(lp->pre_device, lp->pre_channel); | |
2777 | isdn_free_channel(lp->pre_device, lp->pre_channel, ISDN_USAGE_NET); | |
2778 | drvidx = -1; | |
2779 | chidx = -1; | |
2780 | } | |
2781 | } | |
0f13864e | 2782 | strlcpy(lp->msn, cfg->eaz, sizeof(lp->msn)); |
1da177e4 LT |
2783 | lp->pre_device = drvidx; |
2784 | lp->pre_channel = chidx; | |
2785 | lp->onhtime = cfg->onhtime; | |
2786 | lp->charge = cfg->charge; | |
2787 | lp->l2_proto = cfg->l2_proto; | |
2788 | lp->l3_proto = cfg->l3_proto; | |
2789 | lp->cbdelay = cfg->cbdelay; | |
2790 | lp->dialmax = cfg->dialmax; | |
2791 | lp->triggercps = cfg->triggercps; | |
2792 | lp->slavedelay = cfg->slavedelay * HZ; | |
2793 | lp->pppbind = cfg->pppbind; | |
2794 | lp->dialtimeout = cfg->dialtimeout >= 0 ? cfg->dialtimeout * HZ : -1; | |
2795 | lp->dialwait = cfg->dialwait * HZ; | |
2796 | if (cfg->secure) | |
2797 | lp->flags |= ISDN_NET_SECURE; | |
2798 | else | |
2799 | lp->flags &= ~ISDN_NET_SECURE; | |
2800 | if (cfg->cbhup) | |
2801 | lp->flags |= ISDN_NET_CBHUP; | |
2802 | else | |
2803 | lp->flags &= ~ISDN_NET_CBHUP; | |
2804 | switch (cfg->callback) { | |
475be4d8 JP |
2805 | case 0: |
2806 | lp->flags &= ~(ISDN_NET_CALLBACK | ISDN_NET_CBOUT); | |
2807 | break; | |
2808 | case 1: | |
2809 | lp->flags |= ISDN_NET_CALLBACK; | |
2810 | lp->flags &= ~ISDN_NET_CBOUT; | |
2811 | break; | |
2812 | case 2: | |
2813 | lp->flags |= ISDN_NET_CBOUT; | |
2814 | lp->flags &= ~ISDN_NET_CALLBACK; | |
2815 | break; | |
1da177e4 LT |
2816 | } |
2817 | lp->flags &= ~ISDN_NET_DIALMODE_MASK; /* first all bits off */ | |
2818 | if (cfg->dialmode && !(cfg->dialmode & ISDN_NET_DIALMODE_MASK)) { | |
2819 | /* old isdnctrl version, where only 0 or 1 is given */ | |
2820 | printk(KERN_WARNING | |
475be4d8 | 2821 | "Old isdnctrl version detected! Please update.\n"); |
1da177e4 LT |
2822 | lp->flags |= ISDN_NET_DM_OFF; /* turn on `off' bit */ |
2823 | } | |
2824 | else { | |
2825 | lp->flags |= cfg->dialmode; /* turn on selected bits */ | |
2826 | } | |
2827 | if (cfg->chargehup) | |
2828 | lp->hupflags |= ISDN_CHARGEHUP; | |
2829 | else | |
2830 | lp->hupflags &= ~ISDN_CHARGEHUP; | |
2831 | if (cfg->ihup) | |
2832 | lp->hupflags |= ISDN_INHUP; | |
2833 | else | |
2834 | lp->hupflags &= ~ISDN_INHUP; | |
2835 | if (cfg->chargeint > 10) { | |
2836 | lp->hupflags |= ISDN_CHARGEHUP | ISDN_HAVECHARGE | ISDN_MANCHARGE; | |
2837 | lp->chargeint = cfg->chargeint * HZ; | |
2838 | } | |
2839 | if (cfg->p_encap != lp->p_encap) { | |
2840 | if (cfg->p_encap == ISDN_NET_ENCAP_RAWIP) { | |
d62a38d1 | 2841 | p->dev->header_ops = NULL; |
475be4d8 | 2842 | p->dev->flags = IFF_NOARP | IFF_POINTOPOINT; |
1da177e4 | 2843 | } else { |
d62a38d1 | 2844 | p->dev->header_ops = &isdn_header_ops; |
3b04ddde | 2845 | if (cfg->p_encap == ISDN_NET_ENCAP_ETHER) |
d62a38d1 | 2846 | p->dev->flags = IFF_BROADCAST | IFF_MULTICAST; |
3b04ddde | 2847 | else |
475be4d8 | 2848 | p->dev->flags = IFF_NOARP | IFF_POINTOPOINT; |
1da177e4 LT |
2849 | } |
2850 | } | |
2851 | lp->p_encap = cfg->p_encap; | |
2852 | return 0; | |
2853 | } | |
2854 | return -ENODEV; | |
2855 | } | |
2856 | ||
2857 | /* | |
2858 | * Perform get-interface-parameters.ioctl | |
2859 | */ | |
2860 | int | |
475be4d8 | 2861 | isdn_net_getcfg(isdn_net_ioctl_cfg *cfg) |
1da177e4 LT |
2862 | { |
2863 | isdn_net_dev *p = isdn_net_findif(cfg->name); | |
2864 | ||
2865 | if (p) { | |
2866 | isdn_net_local *lp = p->local; | |
2867 | ||
2868 | strcpy(cfg->eaz, lp->msn); | |
2869 | cfg->exclusive = lp->exclusive; | |
2870 | if (lp->pre_device >= 0) { | |
2871 | sprintf(cfg->drvid, "%s,%d", dev->drvid[lp->pre_device], | |
2872 | lp->pre_channel); | |
2873 | } else | |
2874 | cfg->drvid[0] = '\0'; | |
2875 | cfg->onhtime = lp->onhtime; | |
2876 | cfg->charge = lp->charge; | |
2877 | cfg->l2_proto = lp->l2_proto; | |
2878 | cfg->l3_proto = lp->l3_proto; | |
2879 | cfg->p_encap = lp->p_encap; | |
2880 | cfg->secure = (lp->flags & ISDN_NET_SECURE) ? 1 : 0; | |
2881 | cfg->callback = 0; | |
2882 | if (lp->flags & ISDN_NET_CALLBACK) | |
2883 | cfg->callback = 1; | |
2884 | if (lp->flags & ISDN_NET_CBOUT) | |
2885 | cfg->callback = 2; | |
2886 | cfg->cbhup = (lp->flags & ISDN_NET_CBHUP) ? 1 : 0; | |
2887 | cfg->dialmode = lp->flags & ISDN_NET_DIALMODE_MASK; | |
7b18ef08 HS |
2888 | cfg->chargehup = (lp->hupflags & ISDN_CHARGEHUP) ? 1 : 0; |
2889 | cfg->ihup = (lp->hupflags & ISDN_INHUP) ? 1 : 0; | |
1da177e4 LT |
2890 | cfg->cbdelay = lp->cbdelay; |
2891 | cfg->dialmax = lp->dialmax; | |
2892 | cfg->triggercps = lp->triggercps; | |
2893 | cfg->slavedelay = lp->slavedelay / HZ; | |
2894 | cfg->chargeint = (lp->hupflags & ISDN_CHARGEHUP) ? | |
475be4d8 | 2895 | (lp->chargeint / HZ) : 0; |
1da177e4 LT |
2896 | cfg->pppbind = lp->pppbind; |
2897 | cfg->dialtimeout = lp->dialtimeout >= 0 ? lp->dialtimeout / HZ : -1; | |
2898 | cfg->dialwait = lp->dialwait / HZ; | |
faca94ff | 2899 | if (lp->slave) { |
84ce981a | 2900 | if (strlen(lp->slave->name) >= 10) |
faca94ff KK |
2901 | strcpy(cfg->slave, "too-long"); |
2902 | else | |
2903 | strcpy(cfg->slave, lp->slave->name); | |
2904 | } else | |
1da177e4 | 2905 | cfg->slave[0] = '\0'; |
faca94ff | 2906 | if (lp->master) { |
84ce981a | 2907 | if (strlen(lp->master->name) >= 10) |
faca94ff | 2908 | strcpy(cfg->master, "too-long"); |
84ce981a DC |
2909 | else |
2910 | strcpy(cfg->master, lp->master->name); | |
faca94ff | 2911 | } else |
1da177e4 LT |
2912 | cfg->master[0] = '\0'; |
2913 | return 0; | |
2914 | } | |
2915 | return -ENODEV; | |
2916 | } | |
2917 | ||
2918 | /* | |
2919 | * Add a phone-number to an interface. | |
2920 | */ | |
2921 | int | |
475be4d8 | 2922 | isdn_net_addphone(isdn_net_ioctl_phone *phone) |
1da177e4 LT |
2923 | { |
2924 | isdn_net_dev *p = isdn_net_findif(phone->name); | |
2925 | isdn_net_phone *n; | |
2926 | ||
2927 | if (p) { | |
5cbded58 | 2928 | if (!(n = kmalloc(sizeof(isdn_net_phone), GFP_KERNEL))) |
1da177e4 | 2929 | return -ENOMEM; |
0f13864e | 2930 | strlcpy(n->num, phone->phone, sizeof(n->num)); |
1da177e4 LT |
2931 | n->next = p->local->phone[phone->outgoing & 1]; |
2932 | p->local->phone[phone->outgoing & 1] = n; | |
2933 | return 0; | |
2934 | } | |
2935 | return -ENODEV; | |
2936 | } | |
2937 | ||
2938 | /* | |
2939 | * Copy a string of all phone-numbers of an interface to user space. | |
2940 | * This might sleep and must be called with the isdn semaphore down. | |
2941 | */ | |
2942 | int | |
475be4d8 | 2943 | isdn_net_getphones(isdn_net_ioctl_phone *phone, char __user *phones) |
1da177e4 LT |
2944 | { |
2945 | isdn_net_dev *p = isdn_net_findif(phone->name); | |
2946 | int inout = phone->outgoing & 1; | |
2947 | int more = 0; | |
2948 | int count = 0; | |
2949 | isdn_net_phone *n; | |
2950 | ||
2951 | if (!p) | |
2952 | return -ENODEV; | |
2953 | inout &= 1; | |
2954 | for (n = p->local->phone[inout]; n; n = n->next) { | |
2955 | if (more) { | |
2956 | put_user(' ', phones++); | |
2957 | count++; | |
2958 | } | |
2959 | if (copy_to_user(phones, n->num, strlen(n->num) + 1)) { | |
2960 | return -EFAULT; | |
2961 | } | |
2962 | phones += strlen(n->num); | |
2963 | count += strlen(n->num); | |
2964 | more = 1; | |
2965 | } | |
2966 | put_user(0, phones); | |
2967 | count++; | |
2968 | return count; | |
2969 | } | |
2970 | ||
2971 | /* | |
2972 | * Copy a string containing the peer's phone number of a connected interface | |
2973 | * to user space. | |
2974 | */ | |
2975 | int | |
2976 | isdn_net_getpeer(isdn_net_ioctl_phone *phone, isdn_net_ioctl_phone __user *peer) | |
2977 | { | |
2978 | isdn_net_dev *p = isdn_net_findif(phone->name); | |
2979 | int ch, dv, idx; | |
2980 | ||
faca94ff KK |
2981 | if (!p) |
2982 | return -ENODEV; | |
1da177e4 LT |
2983 | /* |
2984 | * Theoretical race: while this executes, the remote number might | |
2985 | * become invalid (hang up) or change (new connection), resulting | |
475be4d8 | 2986 | * in (partially) wrong number copied to user. This race |
1da177e4 LT |
2987 | * currently ignored. |
2988 | */ | |
2989 | ch = p->local->isdn_channel; | |
2990 | dv = p->local->isdn_device; | |
475be4d8 | 2991 | if (ch < 0 && dv < 0) |
faca94ff | 2992 | return -ENOTCONN; |
1da177e4 | 2993 | idx = isdn_dc2minor(dv, ch); |
475be4d8 | 2994 | if (idx < 0) |
faca94ff | 2995 | return -ENODEV; |
1da177e4 | 2996 | /* for pre-bound channels, we need this extra check */ |
faca94ff KK |
2997 | if (strncmp(dev->num[idx], "???", 3) == 0) |
2998 | return -ENOTCONN; | |
2999 | strncpy(phone->phone, dev->num[idx], ISDN_MSNLEN); | |
3000 | phone->outgoing = USG_OUTGOING(dev->usage[idx]); | |
3001 | if (copy_to_user(peer, phone, sizeof(*peer))) | |
3002 | return -EFAULT; | |
1da177e4 LT |
3003 | return 0; |
3004 | } | |
3005 | /* | |
3006 | * Delete a phone-number from an interface. | |
3007 | */ | |
3008 | int | |
475be4d8 | 3009 | isdn_net_delphone(isdn_net_ioctl_phone *phone) |
1da177e4 LT |
3010 | { |
3011 | isdn_net_dev *p = isdn_net_findif(phone->name); | |
3012 | int inout = phone->outgoing & 1; | |
3013 | isdn_net_phone *n; | |
3014 | isdn_net_phone *m; | |
3015 | ||
3016 | if (p) { | |
3017 | n = p->local->phone[inout]; | |
3018 | m = NULL; | |
3019 | while (n) { | |
3020 | if (!strcmp(n->num, phone->phone)) { | |
3021 | if (p->local->dial == n) | |
3022 | p->local->dial = n->next; | |
3023 | if (m) | |
3024 | m->next = n->next; | |
3025 | else | |
3026 | p->local->phone[inout] = n->next; | |
3027 | kfree(n); | |
3028 | return 0; | |
3029 | } | |
3030 | m = n; | |
3031 | n = (isdn_net_phone *) n->next; | |
3032 | } | |
3033 | return -EINVAL; | |
3034 | } | |
3035 | return -ENODEV; | |
3036 | } | |
3037 | ||
3038 | /* | |
3039 | * Delete all phone-numbers of an interface. | |
3040 | */ | |
3041 | static int | |
475be4d8 | 3042 | isdn_net_rmallphone(isdn_net_dev *p) |
1da177e4 LT |
3043 | { |
3044 | isdn_net_phone *n; | |
3045 | isdn_net_phone *m; | |
3046 | int i; | |
3047 | ||
3048 | for (i = 0; i < 2; i++) { | |
3049 | n = p->local->phone[i]; | |
3050 | while (n) { | |
3051 | m = n->next; | |
3052 | kfree(n); | |
3053 | n = m; | |
3054 | } | |
3055 | p->local->phone[i] = NULL; | |
3056 | } | |
3057 | p->local->dial = NULL; | |
3058 | return 0; | |
3059 | } | |
3060 | ||
3061 | /* | |
3062 | * Force a hangup of a network-interface. | |
3063 | */ | |
3064 | int | |
3065 | isdn_net_force_hangup(char *name) | |
3066 | { | |
3067 | isdn_net_dev *p = isdn_net_findif(name); | |
3068 | struct net_device *q; | |
3069 | ||
3070 | if (p) { | |
3071 | if (p->local->isdn_device < 0) | |
3072 | return 1; | |
3073 | q = p->local->slave; | |
3074 | /* If this interface has slaves, do a hangup for them also. */ | |
3075 | while (q) { | |
3076 | isdn_net_hangup(q); | |
838361fe | 3077 | q = MASTER_TO_SLAVE(q); |
1da177e4 | 3078 | } |
d62a38d1 | 3079 | isdn_net_hangup(p->dev); |
1da177e4 LT |
3080 | return 0; |
3081 | } | |
3082 | return -ENODEV; | |
3083 | } | |
3084 | ||
3085 | /* | |
3086 | * Helper-function for isdn_net_rm: Do the real work. | |
3087 | */ | |
3088 | static int | |
475be4d8 | 3089 | isdn_net_realrm(isdn_net_dev *p, isdn_net_dev *q) |
1da177e4 LT |
3090 | { |
3091 | u_long flags; | |
3092 | ||
3093 | if (isdn_net_device_started(p)) { | |
3094 | return -EBUSY; | |
3095 | } | |
3096 | #ifdef CONFIG_ISDN_X25 | |
475be4d8 JP |
3097 | if (p->cprot && p->cprot->pops) |
3098 | p->cprot->pops->proto_del(p->cprot); | |
1da177e4 LT |
3099 | #endif |
3100 | /* Free all phone-entries */ | |
3101 | isdn_net_rmallphone(p); | |
3102 | /* If interface is bound exclusive, free channel-usage */ | |
3103 | if (p->local->exclusive != -1) | |
3104 | isdn_unexclusive_channel(p->local->pre_device, p->local->pre_channel); | |
3105 | if (p->local->master) { | |
3106 | /* It's a slave-device, so update master's slave-pointer if necessary */ | |
838361fe WC |
3107 | if (((isdn_net_local *) ISDN_MASTER_PRIV(p->local))->slave == |
3108 | p->dev) | |
3109 | ((isdn_net_local *)ISDN_MASTER_PRIV(p->local))->slave = | |
3110 | p->local->slave; | |
1da177e4 LT |
3111 | } else { |
3112 | /* Unregister only if it's a master-device */ | |
d62a38d1 | 3113 | unregister_netdev(p->dev); |
1da177e4 LT |
3114 | } |
3115 | /* Unlink device from chain */ | |
3116 | spin_lock_irqsave(&dev->lock, flags); | |
3117 | if (q) | |
3118 | q->next = p->next; | |
3119 | else | |
3120 | dev->netdev = p->next; | |
3121 | if (p->local->slave) { | |
3122 | /* If this interface has a slave, remove it also */ | |
faca94ff | 3123 | char *slavename = p->local->slave->name; |
1da177e4 LT |
3124 | isdn_net_dev *n = dev->netdev; |
3125 | q = NULL; | |
3126 | while (n) { | |
faca94ff | 3127 | if (!strcmp(n->dev->name, slavename)) { |
1da177e4 LT |
3128 | spin_unlock_irqrestore(&dev->lock, flags); |
3129 | isdn_net_realrm(n, q); | |
3130 | spin_lock_irqsave(&dev->lock, flags); | |
3131 | break; | |
3132 | } | |
3133 | q = n; | |
faca94ff | 3134 | n = (isdn_net_dev *)n->next; |
1da177e4 LT |
3135 | } |
3136 | } | |
3137 | spin_unlock_irqrestore(&dev->lock, flags); | |
3138 | /* If no more net-devices remain, disable auto-hangup timer */ | |
3139 | if (dev->netdev == NULL) | |
3140 | isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 0); | |
d62a38d1 | 3141 | free_netdev(p->dev); |
1da177e4 LT |
3142 | kfree(p); |
3143 | ||
3144 | return 0; | |
3145 | } | |
3146 | ||
3147 | /* | |
3148 | * Remove a single network-interface. | |
3149 | */ | |
3150 | int | |
3151 | isdn_net_rm(char *name) | |
3152 | { | |
3153 | u_long flags; | |
3154 | isdn_net_dev *p; | |
3155 | isdn_net_dev *q; | |
3156 | ||
3157 | /* Search name in netdev-chain */ | |
3158 | spin_lock_irqsave(&dev->lock, flags); | |
3159 | p = dev->netdev; | |
3160 | q = NULL; | |
3161 | while (p) { | |
faca94ff | 3162 | if (!strcmp(p->dev->name, name)) { |
1da177e4 LT |
3163 | spin_unlock_irqrestore(&dev->lock, flags); |
3164 | return (isdn_net_realrm(p, q)); | |
3165 | } | |
3166 | q = p; | |
3167 | p = (isdn_net_dev *) p->next; | |
3168 | } | |
3169 | spin_unlock_irqrestore(&dev->lock, flags); | |
3170 | /* If no more net-devices remain, disable auto-hangup timer */ | |
3171 | if (dev->netdev == NULL) | |
3172 | isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 0); | |
3173 | return -ENODEV; | |
3174 | } | |
3175 | ||
3176 | /* | |
3177 | * Remove all network-interfaces | |
3178 | */ | |
3179 | int | |
3180 | isdn_net_rmall(void) | |
3181 | { | |
3182 | u_long flags; | |
3183 | int ret; | |
3184 | ||
3185 | /* Walk through netdev-chain */ | |
3186 | spin_lock_irqsave(&dev->lock, flags); | |
3187 | while (dev->netdev) { | |
3188 | if (!dev->netdev->local->master) { | |
3189 | /* Remove master-devices only, slaves get removed with their master */ | |
3190 | spin_unlock_irqrestore(&dev->lock, flags); | |
3191 | if ((ret = isdn_net_realrm(dev->netdev, NULL))) { | |
3192 | return ret; | |
3193 | } | |
3194 | spin_lock_irqsave(&dev->lock, flags); | |
3195 | } | |
3196 | } | |
3197 | dev->netdev = NULL; | |
3198 | spin_unlock_irqrestore(&dev->lock, flags); | |
3199 | return 0; | |
3200 | } |