Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | * |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 12 | * Data Over Voice (DOV) support added - Guy Ellis 23-Mar-02 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 21 | * for info on the protocol, see |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | * http://i4l.zabbadoz.net/i4l/cisco-hdlc.txt |
| 23 | */ |
| 24 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/isdn.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 26 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | /* |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 43 | * Outline of new tbusy handling: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | * |
Geert Uytterhoeven | 3c7f309 | 2015-03-03 11:58:08 +0100 | [diff] [blame] | 61 | * One problem of the isdn net device code is that it uses struct net_device |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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_* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | * functions on them. |
| 65 | * |
| 66 | * --KG |
| 67 | */ |
| 68 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 69 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 77 | |
| 78 | if (lp->master) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | dev = lp->master; |
| 80 | else |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 81 | dev = n->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 91 | if (lp->master) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | netif_wake_queue(lp->master); |
| 93 | else |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 94 | netif_wake_queue(lp->netdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 106 | netif_stop_queue(lp->netdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | /* |
| 110 | * find out if the net_device which this lp belongs to (lp can be |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 111 | * master or slave) is busy. It's busy iff all (master and slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 124 | nd = ISDN_MASTER_PRIV(lp)->netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | else |
| 126 | nd = lp->netdev; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 158 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 166 | /* For 2.2.x we leave the transmitter busy timeout at 2 secs, just |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | * to be safe. |
| 168 | * For 2.3.x we push it up to 20 secs, because call establishment |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 169 | * (in particular callback) may take such a long time, and we |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 175 | #define ISDN_NET_TX_TIMEOUT (20 * HZ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
| 177 | /* Prototypes */ |
| 178 | |
Adrian Bunk | 3e206b0 | 2005-06-25 14:58:35 -0700 | [diff] [blame] | 179 | static int isdn_net_force_dial_lp(isdn_net_local *); |
Stephen Hemminger | 8b62ff2 | 2009-08-31 19:50:44 +0000 | [diff] [blame] | 180 | static netdev_tx_t isdn_net_start_xmit(struct sk_buff *, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 181 | struct net_device *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 188 | /* |
| 189 | * Code for raw-networking over ISDN |
| 190 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | |
| 192 | static void |
| 193 | isdn_net_unreachable(struct net_device *dev, struct sk_buff *skb, char *reason) |
| 194 | { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 195 | if (skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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" : ""); |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 203 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | dst_link_failure(skb); |
| 205 | } |
| 206 | else { /* dial not triggered by rawIP packet */ |
| 207 | printk(KERN_DEBUG "isdn_net: %s: %s\n", |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 208 | dev->name, |
| 209 | (reason != NULL) ? reason : "reason unknown"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | } |
| 211 | } |
| 212 | |
| 213 | static void |
| 214 | isdn_net_reset(struct net_device *dev) |
| 215 | { |
| 216 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | #endif |
| 222 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 223 | if (cprot && cprot->pops && dops) |
| 224 | cprot->pops->restart(cprot, dev, dops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 251 | memcpy(dev->dev_addr + 2, &ifa->ifa_local, 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | /* If this interface has slaves, start them also */ |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 255 | p = MASTER_TO_SLAVE(dev); |
| 256 | if (p) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | while (p) { |
| 258 | isdn_net_reset(p); |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 259 | p = MASTER_TO_SLAVE(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 270 | isdn_net_bind_channel(isdn_net_local *lp, int idx) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 283 | isdn_net_unbind_channel(isdn_net_local *lp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 291 | */ |
David S. Miller | 5aa7099 | 2008-07-08 22:59:10 -0700 | [diff] [blame] | 292 | qdisc_reset_all_tx(lp->netdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Paul Bolle | bae5843 | 2009-01-14 14:41:00 -0800 | [diff] [blame] | 297 | if (lp->isdn_device != -1 && lp->isdn_channel != -1) |
| 298 | isdn_free_channel(lp->isdn_device, lp->isdn_channel, |
| 299 | ISDN_USAGE_NET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
Adrian Bunk | 3e206b0 | 2005-06-25 14:58:35 -0700 | [diff] [blame] | 318 | static unsigned long last_jiffies = -HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 335 | printk(KERN_DEBUG "%s: %d bogocps\n", p->dev->name, l->cps); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 352 | isdn_net_hangup(p->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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", |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 357 | p->dev->name, l->hupflags); |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 358 | isdn_net_hangup(p->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | } else if (time_after(jiffies, l->chargetime + l->chargeint)) { |
| 360 | printk(KERN_DEBUG |
| 361 | "isdn_net: %s: chtime = %lu, chint = %d\n", |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 362 | p->dev->name, l->chargetime, l->chargeint); |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 363 | isdn_net_hangup(p->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | } |
| 365 | } else |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 366 | isdn_net_hangup(p->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | } else if (l->hupflags & ISDN_INHUP) |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 368 | isdn_net_hangup(p->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | } |
| 370 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 371 | if (dev->global_flags & ISDN_GLOBAL_STOPPED || (ISDN_NET_DIALMODE(*l) == ISDN_NET_DM_OFF)) { |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 372 | isdn_net_hangup(p->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | return 1; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 436 | if (!(lp->flags & ISDN_NET_CONNECTED) |
| 437 | && pops && pops->disconn_ind) |
| 438 | pops->disconn_ind(cprot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | #endif /* CONFIG_ISDN_X25 */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 440 | if ((!lp->dialstate) && (lp->flags & ISDN_NET_CONNECTED)) { |
| 441 | if (lp->p_encap == ISDN_NET_ENCAP_CISCOHDLCK) |
| 442 | isdn_net_ciscohdlck_disconnected(lp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | #ifdef CONFIG_ISDN_PPP |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 444 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) |
| 445 | isdn_ppp_free(lp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | #endif |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
| 467 | #endif /* CONFIG_ISDN_X25 */ |
| 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); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 500 | /* reset dial-timeout */ |
| 501 | lp->dialstarted = 0; |
| 502 | lp->dialwait_timer = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
| 504 | #ifdef CONFIG_ISDN_PPP |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 505 | if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) |
| 506 | isdn_ppp_wakeup_daemon(lp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | #endif |
| 508 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 509 | /* try if there are generic concap receiver routines */ |
| 510 | if (pops) |
| 511 | if (pops->connect_ind) |
| 512 | pops->connect_ind(cprot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | #endif /* CONFIG_ISDN_X25 */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 514 | /* ppp needs to do negotiations first */ |
| 515 | if (lp->p_encap != ISDN_NET_ENCAP_SYNCPPP) |
| 516 | isdn_net_device_wake_queue(lp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | return 1; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 565 | u_char *phone_number; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
| 567 | while (p) { |
| 568 | isdn_net_local *lp = p->local; |
| 569 | |
| 570 | #ifdef ISDN_DEBUG_NET_DIAL |
| 571 | if (lp->dialstate) |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 572 | printk(KERN_DEBUG "%s: dialstate=%d\n", p->dev->name, lp->dialstate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | #endif |
| 574 | switch (lp->dialstate) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | break; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 588 | } |
| 589 | anymore = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
| 595 | } |
| 596 | |
| 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | } |
| 655 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | cmd.driver = lp->isdn_device; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
| 667 | } |
| 668 | |
| 669 | strcpy(cmd.parm.setup.phone, phone_number); |
| 670 | /* |
| 671 | * Switch to next number or back to start if at end of list. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 673 | if (!(lp->dial = (isdn_net_phone *) lp->dial->next)) { |
| 674 | lp->dial = lp->phone[1]; |
| 675 | lp->dialretry++; |
| 676 | |
| 677 | if (lp->dialretry > lp->dialmax) { |
| 678 | if (lp->dialtimeout == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | lp->dialwait_timer = jiffies + lp->dialwait; |
| 680 | lp->dialstarted = 0; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 681 | isdn_net_unreachable(p->dev, NULL, "dial: tried all numbers dialmax times"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 683 | isdn_net_hangup(p->dev); |
| 684 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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" : ""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | lp->dtimer = 0; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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 |
| 703 | isdn_command(&cmd); |
| 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 | */ |
| 742 | #ifdef ISDN_DEBUG_NET_DIAL |
| 743 | printk(KERN_DEBUG "dialtimer2: %d\n", lp->dtimer); |
| 744 | #endif |
| 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 | */ |
| 753 | #ifdef ISDN_DEBUG_NET_DIAL |
| 754 | printk(KERN_DEBUG "dialtimer4: %d\n", lp->dtimer); |
| 755 | #endif |
| 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 { |
| 767 | anymore = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | lp->dialstate++; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | #ifdef ISDN_DEBUG_NET_DIAL |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 785 | printk(KERN_DEBUG "dialtimer4: %d\n", lp->dtimer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | #endif |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 787 | if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10) |
| 788 | isdn_net_hangup(p->dev); |
| 789 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | anymore = 1; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | lp->dtimer = 0; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | { |
Joe Perches | a17531f | 2010-11-15 11:12:24 +0000 | [diff] [blame] | 830 | isdn_net_local *lp = netdev_priv(d); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) { |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 839 | isdn_net_local *slp = ISDN_SLAVE_PRIV(lp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | if (slp->flags & ISDN_NET_CONNECTED) { |
| 841 | printk(KERN_INFO |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 842 | "isdn_net: hang up slave %s before %s\n", |
| 843 | lp->slave->name, d->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | isdn_net_hangup(lp->slave); |
| 845 | } |
| 846 | } |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 847 | printk(KERN_INFO "isdn_net: local hangup %s\n", d->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 857 | if (pops && pops->disconn_ind) |
| 858 | pops->disconn_ind(cprot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 865 | printk(KERN_INFO "%s: Chargesum is %d\n", d->name, lp->charge); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | isdn_all_eaz(lp->isdn_device, lp->isdn_channel); |
| 867 | } |
| 868 | isdn_net_unbind_channel(lp); |
| 869 | } |
| 870 | |
| 871 | typedef struct { |
Harvey Harrison | c19d036 | 2008-11-20 04:10:51 -0800 | [diff] [blame] | 872 | __be16 source; |
| 873 | __be16 dest; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | } ip_ports; |
| 875 | |
| 876 | static void |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 877 | isdn_net_log_skb(struct sk_buff *skb, isdn_net_local *lp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | { |
Arnaldo Carvalho de Melo | d56f90a | 2007-04-10 20:50:43 -0700 | [diff] [blame] | 879 | /* hopefully, this was set correctly */ |
| 880 | const u_char *p = skb_network_header(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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() */ |
Simon Horman | 25b6e14 | 2013-05-28 20:34:23 +0000 | [diff] [blame] | 888 | if (p < skb->data || skb_network_header(skb) >= skb_tail_pointer(skb)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | /* fall back to old isdn_net_log_packet method() */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 890 | char *buf = skb->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 892 | printk(KERN_DEBUG "isdn_net: protocol %04x is buggy, dev %s\n", skb->protocol, lp->netdev->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | p = buf; |
| 894 | proto = ETH_P_IP; |
| 895 | switch (lp->p_encap) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | #ifdef CONFIG_ISDN_PPP |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 909 | case ISDN_NET_ENCAP_SYNCPPP: |
| 910 | proto = ntohs(skb->protocol); |
| 911 | p = &buf[IPPP_MAX_HEADER]; |
| 912 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | #endif |
| 914 | } |
| 915 | } |
| 916 | data_ofs = ((p[0] & 15) * 4); |
| 917 | switch (proto) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 918 | case ETH_P_IP: |
| 919 | switch (p[9]) { |
| 920 | case 1: |
| 921 | strcpy(addinfo, " ICMP"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | break; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 923 | case 2: |
| 924 | strcpy(addinfo, " IGMP"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | break; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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)); |
| 944 | break; |
| 945 | case 22: |
| 946 | strcpy(addinfo, " IDP"); |
| 947 | break; |
| 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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()) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 967 | // we can't grab the lock from irq context, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 986 | static void isdn_net_softint(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 988 | isdn_net_local *lp = container_of(work, isdn_net_local, tqueue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 996 | isdn_net_writebuf_skb(lp, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | } |
| 998 | spin_unlock_bh(&lp->xmit_lock); |
| 999 | } |
| 1000 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1001 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 1024 | printk(KERN_WARNING "%s: HL driver queue full\n", lp->netdev->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | goto error; |
| 1026 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1027 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | lp->transcount += len; |
| 1029 | isdn_net_inc_frame_cnt(lp); |
| 1030 | return; |
| 1031 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1032 | error: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Joe Perches | a17531f | 2010-11-15 11:12:24 +0000 | [diff] [blame] | 1055 | isdn_net_local *lp = netdev_priv(ndev); |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 1056 | int retv = NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 1058 | if (((isdn_net_local *) netdev_priv(ndev))->master) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__); |
| 1060 | dev_kfree_skb(skb); |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 1061 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 1070 | nd = ((isdn_net_local *) netdev_priv(ndev))->netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | lp = isdn_net_get_locked_lp(nd); |
| 1072 | if (!lp) { |
| 1073 | printk(KERN_WARNING "%s: all channels busy - requeuing!\n", ndev->name); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 1074 | return NETDEV_TX_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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)) { |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 1097 | slp = ISDN_SLAVE_PRIV(lp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | if (!(slp->flags & ISDN_NET_CONNECTED)) { |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 1099 | isdn_net_force_dial_lp(ISDN_SLAVE_PRIV(lp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | { |
Joe Perches | a17531f | 2010-11-15 11:12:24 +0000 | [diff] [blame] | 1119 | isdn_net_local *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | if (!skb) |
| 1121 | return; |
| 1122 | if (lp->p_encap == ISDN_NET_ENCAP_ETHER) { |
Arnaldo Carvalho de Melo | bbe735e | 2007-03-10 22:16:10 -0300 | [diff] [blame] | 1123 | const int pullsize = skb_network_offset(skb) - ETH_HLEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1132 | static void isdn_net_tx_timeout(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | { |
Joe Perches | a17531f | 2010-11-15 11:12:24 +0000 | [diff] [blame] | 1134 | isdn_net_local *lp = netdev_priv(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | |
| 1136 | printk(KERN_WARNING "isdn_tx_timeout dev %s dialstate %d\n", ndev->name, lp->dialstate); |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1137 | if (!lp->dialstate) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | lp->stats.tx_errors++; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1139 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1152 | * changed KERN_DEBUG to KERN_WARNING to find out if this is |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | * ever called --KG |
| 1154 | */ |
| 1155 | } |
Florian Westphal | 860e953 | 2016-05-03 16:33:13 +0200 | [diff] [blame] | 1156 | netif_trans_update(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
Stephen Hemminger | 8b62ff2 | 2009-08-31 19:50:44 +0000 | [diff] [blame] | 1165 | static netdev_tx_t |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | isdn_net_start_xmit(struct sk_buff *skb, struct net_device *ndev) |
| 1167 | { |
Joe Perches | a17531f | 2010-11-15 11:12:24 +0000 | [diff] [blame] | 1168 | isdn_net_local *lp = netdev_priv(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1170 | struct concap_proto *cprot = lp->netdev->cprot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1175 | service as needed by X.25 PLP. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | - I don't want that the interface starts dialing when the network layer |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1177 | sends a message which requests to disconnect the lapb link (or if it |
| 1178 | sends any other message not resulting in data transmission). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | Instead, dialing will be initiated by the encapsulation protocol entity |
| 1180 | when a dl_establish request is received from the upper layer. |
| 1181 | */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1182 | if (cprot && cprot->pops) { |
| 1183 | int ret = cprot->pops->encap_and_xmit(cprot, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | |
| 1185 | if (ret) |
| 1186 | netif_stop_queue(ndev); |
| 1187 | return ret; |
| 1188 | } else |
| 1189 | #endif |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1190 | /* auto-dialing xmit function */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1207 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | } |
| 1209 | if (lp->phone[1]) { |
| 1210 | ulong flags; |
| 1211 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1212 | if (lp->dialwait_timer <= 0) |
| 1213 | if (lp->dialstarted > 0 && lp->dialtimeout > 0 && time_before(jiffies, lp->dialstarted + lp->dialtimeout + lp->dialwait)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | lp->dialwait_timer = lp->dialstarted + lp->dialtimeout + lp->dialwait; |
| 1215 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1216 | if (lp->dialwait_timer > 0) { |
| 1217 | if (time_before(jiffies, lp->dialwait_timer)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | isdn_net_unreachable(ndev, skb, "dial rejected: retry-time not reached"); |
| 1219 | dev_kfree_skb(skb); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1220 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | } else |
| 1222 | lp->dialwait_timer = 0; |
| 1223 | } |
| 1224 | /* Grab a free ISDN-Channel */ |
| 1225 | spin_lock_irqsave(&dev->lock, flags); |
| 1226 | if (((chi = |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | spin_unlock_irqrestore(&dev->lock, flags); |
| 1245 | isdn_net_unreachable(ndev, skb, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1246 | "No channel"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | dev_kfree_skb(skb); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1248 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1263 | return NETDEV_TX_OK; /* STN (skb to nirvana) ;) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1272 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | } |
| 1274 | #endif |
| 1275 | spin_unlock_irqrestore(&dev->lock, flags); |
| 1276 | isdn_net_dial(); /* Initiate dialing */ |
| 1277 | netif_stop_queue(ndev); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 1278 | return NETDEV_TX_BUSY; /* let upper layer requeue skb packet */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | } |
| 1280 | #endif |
| 1281 | /* Initiate dialing */ |
| 1282 | spin_unlock_irqrestore(&dev->lock, flags); |
| 1283 | isdn_net_dial(); |
| 1284 | isdn_net_device_stop_queue(lp); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 1285 | return NETDEV_TX_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | } else { |
| 1287 | isdn_net_unreachable(ndev, skb, |
| 1288 | "No phone number"); |
| 1289 | dev_kfree_skb(skb); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1290 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | } |
| 1292 | } else { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1293 | /* Device is connected to an ISDN channel */ |
Florian Westphal | 860e953 | 2016-05-03 16:33:13 +0200 | [diff] [blame] | 1294 | netif_trans_update(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | if (!lp->dialstate) { |
| 1296 | /* ISDN connection is established, try sending */ |
| 1297 | int ret; |
| 1298 | ret = (isdn_net_xmit(ndev, skb)); |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1299 | if (ret) netif_stop_queue(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | return ret; |
| 1301 | } else |
| 1302 | netif_stop_queue(ndev); |
| 1303 | } |
| 1304 | } |
Patrick McHardy | d77eeb7 | 2009-06-15 23:33:24 +0000 | [diff] [blame] | 1305 | return NETDEV_TX_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | #endif |
| 1320 | |
| 1321 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1322 | if (cprot && cprot->pops) cprot->pops->close(cprot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1323 | #endif |
| 1324 | netif_stop_queue(dev); |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 1325 | p = MASTER_TO_SLAVE(dev); |
| 1326 | if (p) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | /* If this interface has slaves, stop them also */ |
| 1328 | while (p) { |
| 1329 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1330 | cprot = ((isdn_net_local *)netdev_priv(p)) |
| 1331 | ->netdev->cprot; |
| 1332 | if (cprot && cprot->pops) |
| 1333 | cprot->pops->close(cprot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | #endif |
| 1335 | isdn_net_hangup(p); |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 1336 | p = MASTER_TO_SLAVE(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | { |
Joe Perches | a17531f | 2010-11-15 11:12:24 +0000 | [diff] [blame] | 1350 | isdn_net_local *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Harvey Harrison | c19d036 | 2008-11-20 04:10:51 -0800 | [diff] [blame] | 1363 | static __be16 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | isdn_net_type_trans(struct sk_buff *skb, struct net_device *dev) |
| 1365 | { |
| 1366 | struct ethhdr *eth; |
| 1367 | unsigned char *rawp; |
| 1368 | |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 1369 | skb_reset_mac_header(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | skb_pull(skb, ETH_HLEN); |
| 1371 | eth = eth_hdr(skb); |
| 1372 | |
| 1373 | if (*eth->h_dest & 1) { |
dingtianhong | 48f045b | 2013-12-26 19:41:05 +0800 | [diff] [blame] | 1374 | if (ether_addr_equal(eth->h_dest, dev->broadcast)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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*/)) { |
dingtianhong | 48f045b | 2013-12-26 19:41:05 +0800 | [diff] [blame] | 1385 | if (!ether_addr_equal(eth->h_dest, dev->dev_addr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | skb->pkt_type = PACKET_OTHERHOST; |
| 1387 | } |
Simon Horman | e5c5d22 | 2013-03-28 13:38:25 +0900 | [diff] [blame] | 1388 | if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1408 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1420 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | printk("isdn out of mem at %s:%d!\n", __FILE__, __LINE__); |
| 1422 | return skb; |
| 1423 | } |
| 1424 | |
| 1425 | /* cisco hdlck device private ioctls */ |
Adrian Bunk | 3e206b0 | 2005-06-25 14:58:35 -0700 | [diff] [blame] | 1426 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | isdn_ciscohdlck_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 1428 | { |
Joe Perches | a17531f | 2010-11-15 11:12:24 +0000 | [diff] [blame] | 1429 | isdn_net_local *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | |
| 1467 | /* get/set debugging */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | rc = -EINVAL; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1483 | break; |
| 1484 | |
| 1485 | default: |
| 1486 | rc = -EINVAL; |
| 1487 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | } |
| 1489 | return (rc); |
| 1490 | } |
| 1491 | |
Stephen Hemminger | d700555 | 2009-01-07 18:04:17 -0800 | [diff] [blame] | 1492 | |
| 1493 | static int isdn_net_ioctl(struct net_device *dev, |
| 1494 | struct ifreq *ifr, int cmd) |
| 1495 | { |
Joe Perches | a17531f | 2010-11-15 11:12:24 +0000 | [diff] [blame] | 1496 | isdn_net_local *lp = netdev_priv(dev); |
Stephen Hemminger | d700555 | 2009-01-07 18:04:17 -0800 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1527 | if ((lp->cisco_line_state) && ((myseq_diff >= 3) || (myseq_diff <= -3))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | /* line up -> down */ |
| 1529 | lp->cisco_line_state = 0; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1530 | printk(KERN_WARNING |
| 1531 | "UPDOWN: Line protocol on Interface %s," |
| 1532 | " changed state to down\n", lp->netdev->dev->name); |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1533 | /* should stop routing higher-level data across */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | } else if ((!lp->cisco_line_state) && |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1535 | (myseq_diff >= 0) && (myseq_diff <= 2)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | /* line down -> up */ |
| 1537 | lp->cisco_line_state = 1; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1538 | printk(KERN_WARNING |
| 1539 | "UPDOWN: Line protocol on Interface %s," |
| 1540 | " changed state to up\n", lp->netdev->dev->name); |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1541 | /* restart routing higher-level data across */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | } |
| 1543 | |
| 1544 | if (lp->cisco_debserint) |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Harvey Harrison | 00bcd52 | 2008-11-13 22:41:29 -0800 | [diff] [blame] | 1559 | *(u8 *)(p + 0) = CISCO_ADDR_UNICAST; |
| 1560 | *(u8 *)(p + 1) = CISCO_CTRL; |
| 1561 | *(__be16 *)(p + 2) = cpu_to_be16(CISCO_TYPE_SLARP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | |
| 1563 | /* slarp keepalive */ |
Harvey Harrison | 00bcd52 | 2008-11-13 22:41:29 -0800 | [diff] [blame] | 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); |
Dirk Hohndel | 06fe9fb | 2009-09-28 21:43:57 -0400 | [diff] [blame] | 1567 | *(__be16 *)(p + 16) = cpu_to_be16(0xffff); // reliability, always 0xffff |
Harvey Harrison | 00bcd52 | 2008-11-13 22:41:29 -0800 | [diff] [blame] | 1568 | p += 18; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1569 | |
| 1570 | isdn_net_write_super(lp, skb); |
| 1571 | |
| 1572 | lp->cisco_timer.expires = jiffies + lp->cisco_keepalive_period * HZ; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1573 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Harvey Harrison | 00bcd52 | 2008-11-13 22:41:29 -0800 | [diff] [blame] | 1590 | *(u8 *)(p + 0) = CISCO_ADDR_UNICAST; |
| 1591 | *(u8 *)(p + 1) = CISCO_CTRL; |
| 1592 | *(__be16 *)(p + 2) = cpu_to_be16(CISCO_TYPE_SLARP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | |
| 1594 | /* slarp request */ |
Harvey Harrison | 00bcd52 | 2008-11-13 22:41:29 -0800 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | |
| 1601 | isdn_net_write_super(lp, skb); |
| 1602 | } |
| 1603 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1604 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1625 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Al Viro | a144ea4 | 2006-09-28 18:00:55 -0700 | [diff] [blame] | 1637 | __be32 addr = 0; /* local ipv4 address */ |
| 1638 | __be32 mask = 0; /* local netmask */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1639 | |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 1640 | if ((in_dev = lp->netdev->dev->ip_ptr) != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Harvey Harrison | 00bcd52 | 2008-11-13 22:41:29 -0800 | [diff] [blame] | 1656 | *(u8 *)(p + 0) = CISCO_ADDR_UNICAST; |
| 1657 | *(u8 *)(p + 1) = CISCO_CTRL; |
| 1658 | *(__be16 *)(p + 2) = cpu_to_be16(CISCO_TYPE_SLARP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Harvey Harrison | 00bcd52 | 2008-11-13 22:41:29 -0800 | [diff] [blame] | 1662 | *(__be32 *)(p + 4) = cpu_to_be32(CISCO_SLARP_REPLY); |
David S. Miller | 198d6ba | 2008-11-18 23:38:23 -0800 | [diff] [blame] | 1663 | *(__be32 *)(p + 8) = addr; // address |
| 1664 | *(__be32 *)(p + 12) = mask; // netmask |
Harvey Harrison | 00bcd52 | 2008-11-13 22:41:29 -0800 | [diff] [blame] | 1665 | *(__be16 *)(p + 16) = cpu_to_be16(0); // unused |
| 1666 | p += 18; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Harvey Harrison | 8cf14e3 | 2008-10-29 22:43:33 -0700 | [diff] [blame] | 1677 | u32 my_seq; |
| 1678 | u32 your_seq; |
| 1679 | __be32 local; |
| 1680 | __be32 *addr, *mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1681 | |
| 1682 | if (skb->len < 14) |
| 1683 | return; |
| 1684 | |
| 1685 | p = skb->data; |
Harvey Harrison | 00bcd52 | 2008-11-13 22:41:29 -0800 | [diff] [blame] | 1686 | code = be32_to_cpup((__be32 *)p); |
| 1687 | p += 4; |
| 1688 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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: |
Harvey Harrison | 8cf14e3 | 2008-10-29 22:43:33 -0700 | [diff] [blame] | 1695 | addr = (__be32 *)p; |
| 1696 | mask = (__be32 *)(p + 4); |
| 1697 | if (*mask != cpu_to_be32(0xfffffffc)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | goto slarp_reply_out; |
Harvey Harrison | 8cf14e3 | 2008-10-29 22:43:33 -0700 | [diff] [blame] | 1699 | if ((*addr & cpu_to_be32(3)) == cpu_to_be32(0) || |
| 1700 | (*addr & cpu_to_be32(3)) == cpu_to_be32(3)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | goto slarp_reply_out; |
Harvey Harrison | 8cf14e3 | 2008-10-29 22:43:33 -0700 | [diff] [blame] | 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); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | break; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1706 | slarp_reply_out: |
Harvey Harrison | 8cf14e3 | 2008-10-29 22:43:33 -0700 | [diff] [blame] | 1707 | printk(KERN_INFO "%s: got invalid slarp reply (%pI4/%pI4) - ignored\n", |
| 1708 | lp->netdev->dev->name, addr, mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | break; |
| 1710 | case CISCO_SLARP_KEEPALIVE: |
| 1711 | period = (int)((jiffies - lp->cisco_last_slarp_in |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1712 | + HZ / 2 - 1) / HZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | if (lp->cisco_debserint && |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1714 | (period != lp->cisco_keepalive_period) && |
| 1715 | lp->cisco_last_slarp_in) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1716 | printk(KERN_DEBUG "%s: Keepalive period mismatch - " |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1717 | "is %d but should be %d.\n", |
| 1718 | lp->netdev->dev->name, period, |
| 1719 | lp->cisco_keepalive_period); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | } |
| 1721 | lp->cisco_last_slarp_in = jiffies; |
Harvey Harrison | 00bcd52 | 2008-11-13 22:41:29 -0800 | [diff] [blame] | 1722 | my_seq = be32_to_cpup((__be32 *)(p + 0)); |
| 1723 | your_seq = be32_to_cpup((__be32 *)(p + 4)); |
Harvey Harrison | 00bcd52 | 2008-11-13 22:41:29 -0800 | [diff] [blame] | 1724 | p += 10; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1735 | u8 addr; |
| 1736 | u8 ctrl; |
| 1737 | u16 type; |
| 1738 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | if (skb->len < 4) |
| 1740 | goto out_free; |
| 1741 | |
| 1742 | p = skb->data; |
Harvey Harrison | 00bcd52 | 2008-11-13 22:41:29 -0800 | [diff] [blame] | 1743 | addr = *(u8 *)(p + 0); |
| 1744 | ctrl = *(u8 *)(p + 1); |
| 1745 | type = be16_to_cpup((__be16 *)(p + 2)); |
| 1746 | p += 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | skb_pull(skb, 4); |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1748 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1749 | if (addr != CISCO_ADDR_UNICAST && addr != CISCO_ADDR_BROADCAST) { |
| 1750 | printk(KERN_WARNING "%s: Unknown Cisco addr 0x%02x\n", |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 1751 | lp->netdev->dev->name, addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | goto out_free; |
| 1753 | } |
| 1754 | if (ctrl != CISCO_CTRL) { |
| 1755 | printk(KERN_WARNING "%s: Unknown Cisco ctrl 0x%02x\n", |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 1756 | lp->netdev->dev->name, ctrl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 " |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1767 | "\"no cdp enable\" on cisco.\n", |
| 1768 | lp->netdev->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | goto out_free; |
| 1770 | default: |
| 1771 | /* no special cisco protocol */ |
| 1772 | skb->protocol = htons(type); |
| 1773 | netif_rx(skb); |
| 1774 | return; |
| 1775 | } |
| 1776 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1777 | out_free: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | { |
Joe Perches | a17531f | 2010-11-15 11:12:24 +0000 | [diff] [blame] | 1787 | isdn_net_local *lp = netdev_priv(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | isdn_net_local *olp = lp; /* original 'lp' */ |
| 1789 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1790 | struct concap_proto *cprot = lp->netdev->cprot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Joe Perches | a17531f | 2010-11-15 11:12:24 +0000 | [diff] [blame] | 1801 | lp = netdev_priv(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1802 | lp->stats.rx_packets++; |
| 1803 | lp->stats.rx_bytes += skb->len; |
| 1804 | } |
| 1805 | skb->dev = ndev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1806 | skb->pkt_type = PACKET_HOST; |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 1807 | skb_reset_mac_header(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | #ifdef ISDN_DEBUG_NET_DUMP |
| 1809 | isdn_dumppkt("R:", skb->data, skb->len, 40); |
| 1810 | #endif |
| 1811 | switch (lp->p_encap) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1846 | #ifdef CONFIG_ISDN_PPP |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | #endif |
| 1852 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1853 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1854 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1861 | #endif /* CONFIG_ISDN_X25 */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1862 | printk(KERN_WARNING "%s: unknown encapsulation, dropping\n", |
| 1863 | lp->netdev->dev->name); |
| 1864 | kfree_skb(skb); |
| 1865 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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)) { |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 1886 | isdn_net_receive(p->dev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | return 1; |
| 1888 | } |
| 1889 | } |
| 1890 | return 0; |
| 1891 | } |
| 1892 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1893 | /* |
| 1894 | * build an header |
| 1895 | * depends on encaps that is being used. |
| 1896 | */ |
| 1897 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 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) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | { |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 1902 | isdn_net_local *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | unsigned char *p; |
Dan Carpenter | 5a46e0f | 2012-02-09 00:46:47 +0000 | [diff] [blame] | 1904 | int len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1905 | |
| 1906 | switch (lp->p_encap) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1907 | case ISDN_NET_ENCAP_ETHER: |
| 1908 | len = eth_header(skb, dev, type, daddr, saddr, plen); |
| 1909 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1910 | #ifdef CONFIG_ISDN_PPP |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | #endif |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
| 1940 | #ifdef CONFIG_ISDN_X25 |
| 1941 | default: |
| 1942 | /* try if there are generic concap protocol routines */ |
| 1943 | if (lp->netdev->cprot) { |
| 1944 | printk(KERN_WARNING "isdn_net_header called with concap_proto!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1945 | len = 0; |
| 1946 | break; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1947 | } |
| 1948 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | #endif /* CONFIG_ISDN_X25 */ |
| 1950 | } |
| 1951 | return len; |
| 1952 | } |
| 1953 | |
David S. Miller | e69dd33 | 2011-07-12 23:28:12 -0700 | [diff] [blame] | 1954 | static int isdn_header_cache(const struct neighbour *neigh, struct hh_cache *hh, |
| 1955 | __be16 type) |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1956 | { |
| 1957 | const struct net_device *dev = neigh->dev; |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 1958 | isdn_net_local *lp = netdev_priv(dev); |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1959 | |
| 1960 | if (lp->p_encap == ISDN_NET_ENCAP_ETHER) |
David S. Miller | e69dd33 | 2011-07-12 23:28:12 -0700 | [diff] [blame] | 1961 | return eth_header_cache(neigh, hh, type); |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 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 | { |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 1969 | isdn_net_local *lp = netdev_priv(dev); |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1970 | if (lp->p_encap == ISDN_NET_ENCAP_ETHER) |
Harvey Harrison | c19d036 | 2008-11-20 04:10:51 -0800 | [diff] [blame] | 1971 | eth_header_cache_update(hh, dev, haddr); |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1972 | } |
| 1973 | |
| 1974 | static const struct header_ops isdn_header_ops = { |
| 1975 | .create = isdn_net_header, |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1976 | .cache = isdn_header_cache, |
| 1977 | .cache_update = isdn_header_cache_update, |
| 1978 | }; |
| 1979 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1987 | int drvidx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1988 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2015 | case 0: |
| 2016 | p->local->pre_channel = 1; |
| 2017 | break; |
| 2018 | case 1: |
| 2019 | p->local->pre_channel = 0; |
| 2020 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Karsten Keil | 0f13864 | 2007-11-22 12:43:13 +0100 | [diff] [blame] | 2072 | char nr[ISDN_MSNLEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Karsten Keil | 0f13864 | 2007-11-22 12:43:13 +0100 | [diff] [blame] | 2081 | strlcpy(nr, setup->phone, ISDN_MSNLEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2104 | dev->usage[idx]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2112 | case 2: |
| 2113 | isdn_net_swap_usage(idx, sidx); |
| 2114 | /* fall through */ |
| 2115 | case 1: |
| 2116 | isdn_net_swapbind(di); |
| 2117 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | } |
| 2119 | swapped = 0; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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' || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2124 | *my_eaz == 'b' || *my_eaz == 'B') |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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", |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2144 | p->dev->name, lp->msn, lp->flags, lp->dialstate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2151 | ))) |
| 2152 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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", |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2247 | p->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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", |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2256 | p->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) { |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 2263 | isdn_net_local *mlp = ISDN_MASTER_PRIV(lp); |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2264 | printk(KERN_DEBUG "ICALLslv: %s\n", p->dev->name); |
| 2265 | printk(KERN_DEBUG "master=%s\n", lp->master->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) { |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 2270 | if (ISDN_SLAVE_PRIV(mlp) == lp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2271 | break; |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 2272 | mlp = ISDN_SLAVE_PRIV(mlp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2282 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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", |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2292 | p->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2293 | return 3; |
| 2294 | } |
| 2295 | printk(KERN_DEBUG "%s: call from %s -> %s, start callback\n", |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2296 | p->dev->name, nr, eaz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2297 | if (lp->phone[1]) { |
| 2298 | /* Grab a free ISDN-Channel */ |
| 2299 | spin_lock_irqsave(&dev->lock, flags); |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 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) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2309 | |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2310 | printk(KERN_WARNING "isdn_net_find_icall: No channel for %s\n", |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2311 | p->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2332 | printk(KERN_WARNING "isdn_net: %s: No phone number\n", |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2333 | p->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2334 | return 0; |
| 2335 | } else { |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2336 | printk(KERN_DEBUG "%s: call from %s -> %s accepted\n", |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2337 | p->dev->name, nr, eaz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2347 | ISDN_USAGE_NET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2384 | return (wret == 2) ? 5 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) { |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2396 | if (!strcmp(p->dev->name, name)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
Adrian Bunk | 3e206b0 | 2005-06-25 14:58:35 -0700 | [diff] [blame] | 2408 | static int |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2409 | isdn_net_force_dial_lp(isdn_net_local *lp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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( |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2419 | ISDN_USAGE_NET, |
| 2420 | lp->l2_proto, |
| 2421 | lp->l3_proto, |
| 2422 | lp->pre_device, |
| 2423 | lp->pre_channel, |
| 2424 | lp->msn)) < 0) { |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2425 | printk(KERN_WARNING "isdn_net_force_dial: No channel for %s\n", |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2426 | lp->netdev->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2457 | isdn_net_dial_req(isdn_net_local *lp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Stephen Hemminger | d700555 | 2009-01-07 18:04:17 -0800 | [diff] [blame] | 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 | |
Stephen Hemminger | d700555 | 2009-01-07 18:04:17 -0800 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2491 | /* |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2492 | * Helper for alloc_netdev() |
| 2493 | */ |
| 2494 | static void _isdn_setup(struct net_device *dev) |
| 2495 | { |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 2496 | isdn_net_local *lp = netdev_priv(dev); |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2497 | |
Stephen Hemminger | d700555 | 2009-01-07 18:04:17 -0800 | [diff] [blame] | 2498 | ether_setup(dev); |
| 2499 | |
Stephen Hemminger | d700555 | 2009-01-07 18:04:17 -0800 | [diff] [blame] | 2500 | /* Setup the generic properties */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2501 | dev->flags = IFF_NOARP | IFF_POINTOPOINT; |
Neil Horman | 550fd08 | 2011-07-26 06:05:38 +0000 | [diff] [blame] | 2502 | |
| 2503 | /* isdn prepends a header in the tx path, can't share skbs */ |
| 2504 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
Stephen Hemminger | d700555 | 2009-01-07 18:04:17 -0800 | [diff] [blame] | 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 | |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 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 | |
| 2539 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | } |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2552 | if (name == NULL) |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2553 | return NULL; |
Burman Yan | 41f9693 | 2006-12-08 02:39:35 -0800 | [diff] [blame] | 2554 | if (!(netdev = kzalloc(sizeof(isdn_net_dev), GFP_KERNEL))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2555 | printk(KERN_WARNING "isdn_net: Could not allocate net-device\n"); |
| 2556 | return NULL; |
| 2557 | } |
Tom Gundersen | c835a67 | 2014-07-14 16:37:24 +0200 | [diff] [blame] | 2558 | netdev->dev = alloc_netdev(sizeof(isdn_net_local), name, |
| 2559 | NET_NAME_UNKNOWN, _isdn_setup); |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2560 | if (!netdev->dev) { |
| 2561 | printk(KERN_WARNING "isdn_net: Could not allocate network device\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2562 | kfree(netdev); |
| 2563 | return NULL; |
| 2564 | } |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 2565 | netdev->local = netdev_priv(netdev->dev); |
Stephen Hemminger | d700555 | 2009-01-07 18:04:17 -0800 | [diff] [blame] | 2566 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2567 | if (master) { |
| 2568 | /* Device shall be a slave */ |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 2569 | struct net_device *p = MASTER_TO_SLAVE(master); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 2576 | p = MASTER_TO_SLAVE(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2577 | } |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 2578 | MASTER_TO_SLAVE(q) = netdev->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2579 | } else { |
| 2580 | /* Device shall be a master */ |
| 2581 | /* |
| 2582 | * Watchdog timer (currently) for master only. |
| 2583 | */ |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2584 | netdev->dev->watchdog_timeo = ISDN_NET_TX_TIMEOUT; |
| 2585 | if (register_netdev(netdev->dev) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2586 | printk(KERN_WARNING "isdn_net: Could not register net-device\n"); |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2587 | free_netdev(netdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2588 | kfree(netdev); |
| 2589 | return NULL; |
| 2590 | } |
| 2591 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2592 | netdev->queue = netdev->local; |
| 2593 | spin_lock_init(&netdev->queue_lock); |
| 2594 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2595 | netdev->local->netdev = netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2596 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2597 | INIT_WORK(&netdev->local->tqueue, isdn_net_softint); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2598 | spin_lock_init(&netdev->local->xmit_lock); |
| 2599 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2600 | /* Put into to netdev-chain */ |
| 2601 | netdev->next = (void *) dev->netdev; |
| 2602 | dev->netdev = netdev; |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2603 | return netdev->dev->name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) { |
Annie Cherkaev | 7b3a667 | 2017-07-15 15:08:58 -0600 | [diff] [blame] | 2614 | /* Slave-Name MUST not be empty or overflow 'newname' */ |
| 2615 | if (strscpy(newname, p + 1, sizeof(newname)) <= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2616 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2617 | *p = 0; |
| 2618 | /* Master must already exist */ |
| 2619 | if (!(n = isdn_net_findif(parm))) |
| 2620 | return NULL; |
| 2621 | /* Master must be a real interface, not a slave */ |
| 2622 | if (n->local->master) |
| 2623 | return NULL; |
| 2624 | /* Master must not be started yet */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2625 | if (isdn_net_device_started(n)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2626 | return NULL; |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2627 | return (isdn_net_new(newname, n->dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2628 | } |
| 2629 | return NULL; |
| 2630 | } |
| 2631 | |
| 2632 | /* |
| 2633 | * Set interface-parameters. |
| 2634 | * Always set all parameters, so the user-level application is responsible |
| 2635 | * for not overwriting existing setups. It has to get the current |
| 2636 | * setup first, if only selected parameters are to be changed. |
| 2637 | */ |
| 2638 | int |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2639 | isdn_net_setcfg(isdn_net_ioctl_cfg *cfg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2640 | { |
| 2641 | isdn_net_dev *p = isdn_net_findif(cfg->name); |
| 2642 | ulong features; |
| 2643 | int i; |
| 2644 | int drvidx; |
| 2645 | int chidx; |
| 2646 | char drvid[25]; |
| 2647 | |
| 2648 | if (p) { |
| 2649 | isdn_net_local *lp = p->local; |
| 2650 | |
| 2651 | /* See if any registered driver supports the features we want */ |
| 2652 | features = ((1 << cfg->l2_proto) << ISDN_FEATURE_L2_SHIFT) | |
| 2653 | ((1 << cfg->l3_proto) << ISDN_FEATURE_L3_SHIFT); |
| 2654 | for (i = 0; i < ISDN_MAX_DRIVERS; i++) |
| 2655 | if (dev->drv[i]) |
| 2656 | if ((dev->drv[i]->interface->features & features) == features) |
| 2657 | break; |
| 2658 | if (i == ISDN_MAX_DRIVERS) { |
| 2659 | printk(KERN_WARNING "isdn_net: No driver with selected features\n"); |
| 2660 | return -ENODEV; |
| 2661 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2662 | if (lp->p_encap != cfg->p_encap) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2663 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2664 | struct concap_proto *cprot = p->cprot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2665 | #endif |
| 2666 | if (isdn_net_device_started(p)) { |
| 2667 | printk(KERN_WARNING "%s: cannot change encap when if is up\n", |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2668 | p->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2669 | return -EBUSY; |
| 2670 | } |
| 2671 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2672 | if (cprot && cprot->pops) |
| 2673 | cprot->pops->proto_del(cprot); |
| 2674 | p->cprot = NULL; |
| 2675 | lp->dops = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2676 | /* ... , prepare for configuration of new one ... */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2677 | switch (cfg->p_encap) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2678 | case ISDN_NET_ENCAP_X25IFACE: |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2679 | lp->dops = &isdn_concap_reliable_dl_dops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2680 | } |
| 2681 | /* ... and allocate new one ... */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2682 | p->cprot = isdn_concap_new(cfg->p_encap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2683 | /* p -> cprot == NULL now if p_encap is not supported |
| 2684 | by means of the concap_proto mechanism */ |
| 2685 | /* the protocol is not configured yet; this will |
| 2686 | happen later when isdn_net_reset() is called */ |
| 2687 | #endif |
| 2688 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2689 | switch (cfg->p_encap) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2690 | case ISDN_NET_ENCAP_SYNCPPP: |
| 2691 | #ifndef CONFIG_ISDN_PPP |
| 2692 | printk(KERN_WARNING "%s: SyncPPP support not configured\n", |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2693 | p->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2694 | return -EINVAL; |
| 2695 | #else |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2696 | p->dev->type = ARPHRD_PPP; /* change ARP type */ |
| 2697 | p->dev->addr_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2698 | #endif |
| 2699 | break; |
| 2700 | case ISDN_NET_ENCAP_X25IFACE: |
| 2701 | #ifndef CONFIG_ISDN_X25 |
| 2702 | printk(KERN_WARNING "%s: isdn-x25 support not configured\n", |
Denis V. Lunev | c749b01 | 2007-10-15 12:52:20 -0700 | [diff] [blame] | 2703 | p->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2704 | return -EINVAL; |
| 2705 | #else |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2706 | p->dev->type = ARPHRD_X25; /* change ARP type */ |
| 2707 | p->dev->addr_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2708 | #endif |
| 2709 | break; |
| 2710 | case ISDN_NET_ENCAP_CISCOHDLCK: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2711 | break; |
| 2712 | default: |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2713 | if (cfg->p_encap >= 0 && |
| 2714 | cfg->p_encap <= ISDN_NET_ENCAP_MAX_ENCAP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2715 | break; |
| 2716 | printk(KERN_WARNING |
| 2717 | "%s: encapsulation protocol %d not supported\n", |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2718 | p->dev->name, cfg->p_encap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2719 | return -EINVAL; |
| 2720 | } |
| 2721 | if (strlen(cfg->drvid)) { |
| 2722 | /* A bind has been requested ... */ |
| 2723 | char *c, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2724 | *e; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2725 | |
Dan Carpenter | 5dc5503 | 2011-11-24 02:42:09 +0000 | [diff] [blame] | 2726 | if (strnlen(cfg->drvid, sizeof(cfg->drvid)) == |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2727 | sizeof(cfg->drvid)) |
Dan Carpenter | 5dc5503 | 2011-11-24 02:42:09 +0000 | [diff] [blame] | 2728 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2729 | drvidx = -1; |
| 2730 | chidx = -1; |
| 2731 | strcpy(drvid, cfg->drvid); |
| 2732 | if ((c = strchr(drvid, ','))) { |
| 2733 | /* The channel-number is appended to the driver-Id with a comma */ |
| 2734 | chidx = (int) simple_strtoul(c + 1, &e, 10); |
| 2735 | if (e == c) |
| 2736 | chidx = -1; |
| 2737 | *c = '\0'; |
| 2738 | } |
| 2739 | for (i = 0; i < ISDN_MAX_DRIVERS; i++) |
| 2740 | /* Lookup driver-Id in array */ |
| 2741 | if (!(strcmp(dev->drvid[i], drvid))) { |
| 2742 | drvidx = i; |
| 2743 | break; |
| 2744 | } |
| 2745 | if ((drvidx == -1) || (chidx == -1)) |
| 2746 | /* Either driver-Id or channel-number invalid */ |
| 2747 | return -ENODEV; |
| 2748 | } else { |
| 2749 | /* Parameters are valid, so get them */ |
| 2750 | drvidx = lp->pre_device; |
| 2751 | chidx = lp->pre_channel; |
| 2752 | } |
| 2753 | if (cfg->exclusive > 0) { |
| 2754 | unsigned long flags; |
| 2755 | |
| 2756 | /* If binding is exclusive, try to grab the channel */ |
| 2757 | spin_lock_irqsave(&dev->lock, flags); |
| 2758 | if ((i = isdn_get_free_channel(ISDN_USAGE_NET, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2759 | lp->l2_proto, lp->l3_proto, drvidx, |
| 2760 | chidx, lp->msn)) < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2761 | /* Grab failed, because desired channel is in use */ |
| 2762 | lp->exclusive = -1; |
| 2763 | spin_unlock_irqrestore(&dev->lock, flags); |
| 2764 | return -EBUSY; |
| 2765 | } |
| 2766 | /* All went ok, so update isdninfo */ |
| 2767 | dev->usage[i] = ISDN_USAGE_EXCLUSIVE; |
| 2768 | isdn_info_update(); |
| 2769 | spin_unlock_irqrestore(&dev->lock, flags); |
| 2770 | lp->exclusive = i; |
| 2771 | } else { |
| 2772 | /* Non-exclusive binding or unbind. */ |
| 2773 | lp->exclusive = -1; |
| 2774 | if ((lp->pre_device != -1) && (cfg->exclusive == -1)) { |
| 2775 | isdn_unexclusive_channel(lp->pre_device, lp->pre_channel); |
| 2776 | isdn_free_channel(lp->pre_device, lp->pre_channel, ISDN_USAGE_NET); |
| 2777 | drvidx = -1; |
| 2778 | chidx = -1; |
| 2779 | } |
| 2780 | } |
Karsten Keil | 0f13864 | 2007-11-22 12:43:13 +0100 | [diff] [blame] | 2781 | strlcpy(lp->msn, cfg->eaz, sizeof(lp->msn)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2782 | lp->pre_device = drvidx; |
| 2783 | lp->pre_channel = chidx; |
| 2784 | lp->onhtime = cfg->onhtime; |
| 2785 | lp->charge = cfg->charge; |
| 2786 | lp->l2_proto = cfg->l2_proto; |
| 2787 | lp->l3_proto = cfg->l3_proto; |
| 2788 | lp->cbdelay = cfg->cbdelay; |
| 2789 | lp->dialmax = cfg->dialmax; |
| 2790 | lp->triggercps = cfg->triggercps; |
| 2791 | lp->slavedelay = cfg->slavedelay * HZ; |
| 2792 | lp->pppbind = cfg->pppbind; |
| 2793 | lp->dialtimeout = cfg->dialtimeout >= 0 ? cfg->dialtimeout * HZ : -1; |
| 2794 | lp->dialwait = cfg->dialwait * HZ; |
| 2795 | if (cfg->secure) |
| 2796 | lp->flags |= ISDN_NET_SECURE; |
| 2797 | else |
| 2798 | lp->flags &= ~ISDN_NET_SECURE; |
| 2799 | if (cfg->cbhup) |
| 2800 | lp->flags |= ISDN_NET_CBHUP; |
| 2801 | else |
| 2802 | lp->flags &= ~ISDN_NET_CBHUP; |
| 2803 | switch (cfg->callback) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2804 | case 0: |
| 2805 | lp->flags &= ~(ISDN_NET_CALLBACK | ISDN_NET_CBOUT); |
| 2806 | break; |
| 2807 | case 1: |
| 2808 | lp->flags |= ISDN_NET_CALLBACK; |
| 2809 | lp->flags &= ~ISDN_NET_CBOUT; |
| 2810 | break; |
| 2811 | case 2: |
| 2812 | lp->flags |= ISDN_NET_CBOUT; |
| 2813 | lp->flags &= ~ISDN_NET_CALLBACK; |
| 2814 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2815 | } |
| 2816 | lp->flags &= ~ISDN_NET_DIALMODE_MASK; /* first all bits off */ |
| 2817 | if (cfg->dialmode && !(cfg->dialmode & ISDN_NET_DIALMODE_MASK)) { |
| 2818 | /* old isdnctrl version, where only 0 or 1 is given */ |
| 2819 | printk(KERN_WARNING |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2820 | "Old isdnctrl version detected! Please update.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2821 | lp->flags |= ISDN_NET_DM_OFF; /* turn on `off' bit */ |
| 2822 | } |
| 2823 | else { |
| 2824 | lp->flags |= cfg->dialmode; /* turn on selected bits */ |
| 2825 | } |
| 2826 | if (cfg->chargehup) |
| 2827 | lp->hupflags |= ISDN_CHARGEHUP; |
| 2828 | else |
| 2829 | lp->hupflags &= ~ISDN_CHARGEHUP; |
| 2830 | if (cfg->ihup) |
| 2831 | lp->hupflags |= ISDN_INHUP; |
| 2832 | else |
| 2833 | lp->hupflags &= ~ISDN_INHUP; |
| 2834 | if (cfg->chargeint > 10) { |
| 2835 | lp->hupflags |= ISDN_CHARGEHUP | ISDN_HAVECHARGE | ISDN_MANCHARGE; |
| 2836 | lp->chargeint = cfg->chargeint * HZ; |
| 2837 | } |
| 2838 | if (cfg->p_encap != lp->p_encap) { |
| 2839 | if (cfg->p_encap == ISDN_NET_ENCAP_RAWIP) { |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2840 | p->dev->header_ops = NULL; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2841 | p->dev->flags = IFF_NOARP | IFF_POINTOPOINT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2842 | } else { |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2843 | p->dev->header_ops = &isdn_header_ops; |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 2844 | if (cfg->p_encap == ISDN_NET_ENCAP_ETHER) |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 2845 | p->dev->flags = IFF_BROADCAST | IFF_MULTICAST; |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 2846 | else |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2847 | p->dev->flags = IFF_NOARP | IFF_POINTOPOINT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2848 | } |
| 2849 | } |
| 2850 | lp->p_encap = cfg->p_encap; |
| 2851 | return 0; |
| 2852 | } |
| 2853 | return -ENODEV; |
| 2854 | } |
| 2855 | |
| 2856 | /* |
| 2857 | * Perform get-interface-parameters.ioctl |
| 2858 | */ |
| 2859 | int |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2860 | isdn_net_getcfg(isdn_net_ioctl_cfg *cfg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2861 | { |
| 2862 | isdn_net_dev *p = isdn_net_findif(cfg->name); |
| 2863 | |
| 2864 | if (p) { |
| 2865 | isdn_net_local *lp = p->local; |
| 2866 | |
| 2867 | strcpy(cfg->eaz, lp->msn); |
| 2868 | cfg->exclusive = lp->exclusive; |
| 2869 | if (lp->pre_device >= 0) { |
| 2870 | sprintf(cfg->drvid, "%s,%d", dev->drvid[lp->pre_device], |
| 2871 | lp->pre_channel); |
| 2872 | } else |
| 2873 | cfg->drvid[0] = '\0'; |
| 2874 | cfg->onhtime = lp->onhtime; |
| 2875 | cfg->charge = lp->charge; |
| 2876 | cfg->l2_proto = lp->l2_proto; |
| 2877 | cfg->l3_proto = lp->l3_proto; |
| 2878 | cfg->p_encap = lp->p_encap; |
| 2879 | cfg->secure = (lp->flags & ISDN_NET_SECURE) ? 1 : 0; |
| 2880 | cfg->callback = 0; |
| 2881 | if (lp->flags & ISDN_NET_CALLBACK) |
| 2882 | cfg->callback = 1; |
| 2883 | if (lp->flags & ISDN_NET_CBOUT) |
| 2884 | cfg->callback = 2; |
| 2885 | cfg->cbhup = (lp->flags & ISDN_NET_CBHUP) ? 1 : 0; |
| 2886 | cfg->dialmode = lp->flags & ISDN_NET_DIALMODE_MASK; |
Himangi Saraogi | 7b18ef0 | 2014-07-24 02:46:38 +0530 | [diff] [blame] | 2887 | cfg->chargehup = (lp->hupflags & ISDN_CHARGEHUP) ? 1 : 0; |
| 2888 | cfg->ihup = (lp->hupflags & ISDN_INHUP) ? 1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2889 | cfg->cbdelay = lp->cbdelay; |
| 2890 | cfg->dialmax = lp->dialmax; |
| 2891 | cfg->triggercps = lp->triggercps; |
| 2892 | cfg->slavedelay = lp->slavedelay / HZ; |
| 2893 | cfg->chargeint = (lp->hupflags & ISDN_CHARGEHUP) ? |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2894 | (lp->chargeint / HZ) : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2895 | cfg->pppbind = lp->pppbind; |
| 2896 | cfg->dialtimeout = lp->dialtimeout >= 0 ? lp->dialtimeout / HZ : -1; |
| 2897 | cfg->dialwait = lp->dialwait / HZ; |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2898 | if (lp->slave) { |
Dan Carpenter | 84ce981 | 2010-07-10 04:31:11 +0000 | [diff] [blame] | 2899 | if (strlen(lp->slave->name) >= 10) |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2900 | strcpy(cfg->slave, "too-long"); |
| 2901 | else |
| 2902 | strcpy(cfg->slave, lp->slave->name); |
| 2903 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2904 | cfg->slave[0] = '\0'; |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2905 | if (lp->master) { |
Dan Carpenter | 84ce981 | 2010-07-10 04:31:11 +0000 | [diff] [blame] | 2906 | if (strlen(lp->master->name) >= 10) |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2907 | strcpy(cfg->master, "too-long"); |
Dan Carpenter | 84ce981 | 2010-07-10 04:31:11 +0000 | [diff] [blame] | 2908 | else |
| 2909 | strcpy(cfg->master, lp->master->name); |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2910 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2911 | cfg->master[0] = '\0'; |
| 2912 | return 0; |
| 2913 | } |
| 2914 | return -ENODEV; |
| 2915 | } |
| 2916 | |
| 2917 | /* |
| 2918 | * Add a phone-number to an interface. |
| 2919 | */ |
| 2920 | int |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2921 | isdn_net_addphone(isdn_net_ioctl_phone *phone) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2922 | { |
| 2923 | isdn_net_dev *p = isdn_net_findif(phone->name); |
| 2924 | isdn_net_phone *n; |
| 2925 | |
| 2926 | if (p) { |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 2927 | if (!(n = kmalloc(sizeof(isdn_net_phone), GFP_KERNEL))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2928 | return -ENOMEM; |
Karsten Keil | 0f13864 | 2007-11-22 12:43:13 +0100 | [diff] [blame] | 2929 | strlcpy(n->num, phone->phone, sizeof(n->num)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2930 | n->next = p->local->phone[phone->outgoing & 1]; |
| 2931 | p->local->phone[phone->outgoing & 1] = n; |
| 2932 | return 0; |
| 2933 | } |
| 2934 | return -ENODEV; |
| 2935 | } |
| 2936 | |
| 2937 | /* |
| 2938 | * Copy a string of all phone-numbers of an interface to user space. |
| 2939 | * This might sleep and must be called with the isdn semaphore down. |
| 2940 | */ |
| 2941 | int |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2942 | isdn_net_getphones(isdn_net_ioctl_phone *phone, char __user *phones) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2943 | { |
| 2944 | isdn_net_dev *p = isdn_net_findif(phone->name); |
| 2945 | int inout = phone->outgoing & 1; |
| 2946 | int more = 0; |
| 2947 | int count = 0; |
| 2948 | isdn_net_phone *n; |
| 2949 | |
| 2950 | if (!p) |
| 2951 | return -ENODEV; |
| 2952 | inout &= 1; |
| 2953 | for (n = p->local->phone[inout]; n; n = n->next) { |
| 2954 | if (more) { |
| 2955 | put_user(' ', phones++); |
| 2956 | count++; |
| 2957 | } |
| 2958 | if (copy_to_user(phones, n->num, strlen(n->num) + 1)) { |
| 2959 | return -EFAULT; |
| 2960 | } |
| 2961 | phones += strlen(n->num); |
| 2962 | count += strlen(n->num); |
| 2963 | more = 1; |
| 2964 | } |
| 2965 | put_user(0, phones); |
| 2966 | count++; |
| 2967 | return count; |
| 2968 | } |
| 2969 | |
| 2970 | /* |
| 2971 | * Copy a string containing the peer's phone number of a connected interface |
| 2972 | * to user space. |
| 2973 | */ |
| 2974 | int |
| 2975 | isdn_net_getpeer(isdn_net_ioctl_phone *phone, isdn_net_ioctl_phone __user *peer) |
| 2976 | { |
| 2977 | isdn_net_dev *p = isdn_net_findif(phone->name); |
| 2978 | int ch, dv, idx; |
| 2979 | |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2980 | if (!p) |
| 2981 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2982 | /* |
| 2983 | * Theoretical race: while this executes, the remote number might |
| 2984 | * become invalid (hang up) or change (new connection), resulting |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2985 | * in (partially) wrong number copied to user. This race |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2986 | * currently ignored. |
| 2987 | */ |
| 2988 | ch = p->local->isdn_channel; |
| 2989 | dv = p->local->isdn_device; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2990 | if (ch < 0 && dv < 0) |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2991 | return -ENOTCONN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2992 | idx = isdn_dc2minor(dv, ch); |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2993 | if (idx < 0) |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2994 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2995 | /* for pre-bound channels, we need this extra check */ |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 2996 | if (strncmp(dev->num[idx], "???", 3) == 0) |
| 2997 | return -ENOTCONN; |
| 2998 | strncpy(phone->phone, dev->num[idx], ISDN_MSNLEN); |
| 2999 | phone->outgoing = USG_OUTGOING(dev->usage[idx]); |
| 3000 | if (copy_to_user(peer, phone, sizeof(*peer))) |
| 3001 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3002 | return 0; |
| 3003 | } |
| 3004 | /* |
| 3005 | * Delete a phone-number from an interface. |
| 3006 | */ |
| 3007 | int |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 3008 | isdn_net_delphone(isdn_net_ioctl_phone *phone) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3009 | { |
| 3010 | isdn_net_dev *p = isdn_net_findif(phone->name); |
| 3011 | int inout = phone->outgoing & 1; |
| 3012 | isdn_net_phone *n; |
| 3013 | isdn_net_phone *m; |
| 3014 | |
| 3015 | if (p) { |
| 3016 | n = p->local->phone[inout]; |
| 3017 | m = NULL; |
| 3018 | while (n) { |
| 3019 | if (!strcmp(n->num, phone->phone)) { |
| 3020 | if (p->local->dial == n) |
| 3021 | p->local->dial = n->next; |
| 3022 | if (m) |
| 3023 | m->next = n->next; |
| 3024 | else |
| 3025 | p->local->phone[inout] = n->next; |
| 3026 | kfree(n); |
| 3027 | return 0; |
| 3028 | } |
| 3029 | m = n; |
| 3030 | n = (isdn_net_phone *) n->next; |
| 3031 | } |
| 3032 | return -EINVAL; |
| 3033 | } |
| 3034 | return -ENODEV; |
| 3035 | } |
| 3036 | |
| 3037 | /* |
| 3038 | * Delete all phone-numbers of an interface. |
| 3039 | */ |
| 3040 | static int |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 3041 | isdn_net_rmallphone(isdn_net_dev *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3042 | { |
| 3043 | isdn_net_phone *n; |
| 3044 | isdn_net_phone *m; |
| 3045 | int i; |
| 3046 | |
| 3047 | for (i = 0; i < 2; i++) { |
| 3048 | n = p->local->phone[i]; |
| 3049 | while (n) { |
| 3050 | m = n->next; |
| 3051 | kfree(n); |
| 3052 | n = m; |
| 3053 | } |
| 3054 | p->local->phone[i] = NULL; |
| 3055 | } |
| 3056 | p->local->dial = NULL; |
| 3057 | return 0; |
| 3058 | } |
| 3059 | |
| 3060 | /* |
| 3061 | * Force a hangup of a network-interface. |
| 3062 | */ |
| 3063 | int |
| 3064 | isdn_net_force_hangup(char *name) |
| 3065 | { |
| 3066 | isdn_net_dev *p = isdn_net_findif(name); |
| 3067 | struct net_device *q; |
| 3068 | |
| 3069 | if (p) { |
| 3070 | if (p->local->isdn_device < 0) |
| 3071 | return 1; |
| 3072 | q = p->local->slave; |
| 3073 | /* If this interface has slaves, do a hangup for them also. */ |
| 3074 | while (q) { |
| 3075 | isdn_net_hangup(q); |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 3076 | q = MASTER_TO_SLAVE(q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3077 | } |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 3078 | isdn_net_hangup(p->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3079 | return 0; |
| 3080 | } |
| 3081 | return -ENODEV; |
| 3082 | } |
| 3083 | |
| 3084 | /* |
| 3085 | * Helper-function for isdn_net_rm: Do the real work. |
| 3086 | */ |
| 3087 | static int |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 3088 | isdn_net_realrm(isdn_net_dev *p, isdn_net_dev *q) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3089 | { |
| 3090 | u_long flags; |
| 3091 | |
| 3092 | if (isdn_net_device_started(p)) { |
| 3093 | return -EBUSY; |
| 3094 | } |
| 3095 | #ifdef CONFIG_ISDN_X25 |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 3096 | if (p->cprot && p->cprot->pops) |
| 3097 | p->cprot->pops->proto_del(p->cprot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3098 | #endif |
| 3099 | /* Free all phone-entries */ |
| 3100 | isdn_net_rmallphone(p); |
| 3101 | /* If interface is bound exclusive, free channel-usage */ |
| 3102 | if (p->local->exclusive != -1) |
| 3103 | isdn_unexclusive_channel(p->local->pre_device, p->local->pre_channel); |
| 3104 | if (p->local->master) { |
| 3105 | /* It's a slave-device, so update master's slave-pointer if necessary */ |
Wang Chen | 838361f | 2008-12-03 15:49:46 -0800 | [diff] [blame] | 3106 | if (((isdn_net_local *) ISDN_MASTER_PRIV(p->local))->slave == |
| 3107 | p->dev) |
| 3108 | ((isdn_net_local *)ISDN_MASTER_PRIV(p->local))->slave = |
| 3109 | p->local->slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3110 | } else { |
| 3111 | /* Unregister only if it's a master-device */ |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 3112 | unregister_netdev(p->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3113 | } |
| 3114 | /* Unlink device from chain */ |
| 3115 | spin_lock_irqsave(&dev->lock, flags); |
| 3116 | if (q) |
| 3117 | q->next = p->next; |
| 3118 | else |
| 3119 | dev->netdev = p->next; |
| 3120 | if (p->local->slave) { |
| 3121 | /* If this interface has a slave, remove it also */ |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 3122 | char *slavename = p->local->slave->name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3123 | isdn_net_dev *n = dev->netdev; |
| 3124 | q = NULL; |
| 3125 | while (n) { |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 3126 | if (!strcmp(n->dev->name, slavename)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3127 | spin_unlock_irqrestore(&dev->lock, flags); |
| 3128 | isdn_net_realrm(n, q); |
| 3129 | spin_lock_irqsave(&dev->lock, flags); |
| 3130 | break; |
| 3131 | } |
| 3132 | q = n; |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 3133 | n = (isdn_net_dev *)n->next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3134 | } |
| 3135 | } |
| 3136 | spin_unlock_irqrestore(&dev->lock, flags); |
| 3137 | /* If no more net-devices remain, disable auto-hangup timer */ |
| 3138 | if (dev->netdev == NULL) |
| 3139 | isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 0); |
Karsten Keil | d62a38d | 2007-10-08 20:37:11 -0700 | [diff] [blame] | 3140 | free_netdev(p->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3141 | kfree(p); |
| 3142 | |
| 3143 | return 0; |
| 3144 | } |
| 3145 | |
| 3146 | /* |
| 3147 | * Remove a single network-interface. |
| 3148 | */ |
| 3149 | int |
| 3150 | isdn_net_rm(char *name) |
| 3151 | { |
| 3152 | u_long flags; |
| 3153 | isdn_net_dev *p; |
| 3154 | isdn_net_dev *q; |
| 3155 | |
| 3156 | /* Search name in netdev-chain */ |
| 3157 | spin_lock_irqsave(&dev->lock, flags); |
| 3158 | p = dev->netdev; |
| 3159 | q = NULL; |
| 3160 | while (p) { |
Karsten Keil | faca94f | 2007-10-15 02:11:44 -0700 | [diff] [blame] | 3161 | if (!strcmp(p->dev->name, name)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3162 | spin_unlock_irqrestore(&dev->lock, flags); |
| 3163 | return (isdn_net_realrm(p, q)); |
| 3164 | } |
| 3165 | q = p; |
| 3166 | p = (isdn_net_dev *) p->next; |
| 3167 | } |
| 3168 | spin_unlock_irqrestore(&dev->lock, flags); |
| 3169 | /* If no more net-devices remain, disable auto-hangup timer */ |
| 3170 | if (dev->netdev == NULL) |
| 3171 | isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 0); |
| 3172 | return -ENODEV; |
| 3173 | } |
| 3174 | |
| 3175 | /* |
| 3176 | * Remove all network-interfaces |
| 3177 | */ |
| 3178 | int |
| 3179 | isdn_net_rmall(void) |
| 3180 | { |
| 3181 | u_long flags; |
| 3182 | int ret; |
| 3183 | |
| 3184 | /* Walk through netdev-chain */ |
| 3185 | spin_lock_irqsave(&dev->lock, flags); |
| 3186 | while (dev->netdev) { |
| 3187 | if (!dev->netdev->local->master) { |
| 3188 | /* Remove master-devices only, slaves get removed with their master */ |
| 3189 | spin_unlock_irqrestore(&dev->lock, flags); |
| 3190 | if ((ret = isdn_net_realrm(dev->netdev, NULL))) { |
| 3191 | return ret; |
| 3192 | } |
| 3193 | spin_lock_irqsave(&dev->lock, flags); |
| 3194 | } |
| 3195 | } |
| 3196 | dev->netdev = NULL; |
| 3197 | spin_unlock_irqrestore(&dev->lock, flags); |
| 3198 | return 0; |
| 3199 | } |