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path: root/drivers/isdn/i4l/isdn_net.c
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Diffstat (limited to 'drivers/isdn/i4l/isdn_net.c')
-rw-r--r--drivers/isdn/i4l/isdn_net.c3198
1 files changed, 0 insertions, 3198 deletions
diff --git a/drivers/isdn/i4l/isdn_net.c b/drivers/isdn/i4l/isdn_net.c
deleted file mode 100644
index c138f66f2659..000000000000
--- a/drivers/isdn/i4l/isdn_net.c
+++ /dev/null
@@ -1,3198 +0,0 @@
-/* $Id: isdn_net.c,v 1.1.2.2 2004/01/12 22:37:19 keil Exp $
- *
- * Linux ISDN subsystem, network interfaces and related functions (linklevel).
- *
- * Copyright 1994-1998 by Fritz Elfert (fritz@isdn4linux.de)
- * Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg
- * Copyright 1995,96 by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de)
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- * Data Over Voice (DOV) support added - Guy Ellis 23-Mar-02
- * guy@traverse.com.au
- * Outgoing calls - looks for a 'V' in first char of dialed number
- * Incoming calls - checks first character of eaz as follows:
- * Numeric - accept DATA only - original functionality
- * 'V' - accept VOICE (DOV) only
- * 'B' - accept BOTH DATA and DOV types
- *
- * Jan 2001: fix CISCO HDLC Bjoern A. Zeeb <i4l@zabbadoz.net>
- * for info on the protocol, see
- * http://i4l.zabbadoz.net/i4l/cisco-hdlc.txt
- */
-
-#include <linux/isdn.h>
-#include <linux/slab.h>
-#include <net/arp.h>
-#include <net/dst.h>
-#include <net/pkt_sched.h>
-#include <linux/inetdevice.h>
-#include "isdn_common.h"
-#include "isdn_net.h"
-#ifdef CONFIG_ISDN_PPP
-#include "isdn_ppp.h"
-#endif
-#ifdef CONFIG_ISDN_X25
-#include <linux/concap.h>
-#include "isdn_concap.h"
-#endif
-
-
-/*
- * Outline of new tbusy handling:
- *
- * Old method, roughly spoken, consisted of setting tbusy when entering
- * isdn_net_start_xmit() and at several other locations and clearing
- * it from isdn_net_start_xmit() thread when sending was successful.
- *
- * With 2.3.x multithreaded network core, to prevent problems, tbusy should
- * only be set by the isdn_net_start_xmit() thread and only when a tx-busy
- * condition is detected. Other threads (in particular isdn_net_stat_callb())
- * are only allowed to clear tbusy.
- *
- * -HE
- */
-
-/*
- * About SOFTNET:
- * Most of the changes were pretty obvious and basically done by HE already.
- *
- * One problem of the isdn net device code is that it uses struct net_device
- * for masters and slaves. However, only master interface are registered to
- * the network layer, and therefore, it only makes sense to call netif_*
- * functions on them.
- *
- * --KG
- */
-
-/*
- * Find out if the netdevice has been ifup-ed yet.
- * For slaves, look at the corresponding master.
- */
-static __inline__ int isdn_net_device_started(isdn_net_dev *n)
-{
- isdn_net_local *lp = n->local;
- struct net_device *dev;
-
- if (lp->master)
- dev = lp->master;
- else
- dev = n->dev;
- return netif_running(dev);
-}
-
-/*
- * wake up the network -> net_device queue.
- * For slaves, wake the corresponding master interface.
- */
-static __inline__ void isdn_net_device_wake_queue(isdn_net_local *lp)
-{
- if (lp->master)
- netif_wake_queue(lp->master);
- else
- netif_wake_queue(lp->netdev->dev);
-}
-
-/*
- * stop the network -> net_device queue.
- * For slaves, stop the corresponding master interface.
- */
-static __inline__ void isdn_net_device_stop_queue(isdn_net_local *lp)
-{
- if (lp->master)
- netif_stop_queue(lp->master);
- else
- netif_stop_queue(lp->netdev->dev);
-}
-
-/*
- * find out if the net_device which this lp belongs to (lp can be
- * master or slave) is busy. It's busy iff all (master and slave)
- * queues are busy
- */
-static __inline__ int isdn_net_device_busy(isdn_net_local *lp)
-{
- isdn_net_local *nlp;
- isdn_net_dev *nd;
- unsigned long flags;
-
- if (!isdn_net_lp_busy(lp))
- return 0;
-
- if (lp->master)
- nd = ISDN_MASTER_PRIV(lp)->netdev;
- else
- nd = lp->netdev;
-
- spin_lock_irqsave(&nd->queue_lock, flags);
- nlp = lp->next;
- while (nlp != lp) {
- if (!isdn_net_lp_busy(nlp)) {
- spin_unlock_irqrestore(&nd->queue_lock, flags);
- return 0;
- }
- nlp = nlp->next;
- }
- spin_unlock_irqrestore(&nd->queue_lock, flags);
- return 1;
-}
-
-static __inline__ void isdn_net_inc_frame_cnt(isdn_net_local *lp)
-{
- atomic_inc(&lp->frame_cnt);
- if (isdn_net_device_busy(lp))
- isdn_net_device_stop_queue(lp);
-}
-
-static __inline__ void isdn_net_dec_frame_cnt(isdn_net_local *lp)
-{
- atomic_dec(&lp->frame_cnt);
-
- if (!(isdn_net_device_busy(lp))) {
- if (!skb_queue_empty(&lp->super_tx_queue)) {
- schedule_work(&lp->tqueue);
- } else {
- isdn_net_device_wake_queue(lp);
- }
- }
-}
-
-static __inline__ void isdn_net_zero_frame_cnt(isdn_net_local *lp)
-{
- atomic_set(&lp->frame_cnt, 0);
-}
-
-/* For 2.2.x we leave the transmitter busy timeout at 2 secs, just
- * to be safe.
- * For 2.3.x we push it up to 20 secs, because call establishment
- * (in particular callback) may take such a long time, and we
- * don't want confusing messages in the log. However, there is a slight
- * possibility that this large timeout will break other things like MPPP,
- * which might rely on the tx timeout. If so, we'll find out this way...
- */
-
-#define ISDN_NET_TX_TIMEOUT (20 * HZ)
-
-/* Prototypes */
-
-static int isdn_net_force_dial_lp(isdn_net_local *);
-static netdev_tx_t isdn_net_start_xmit(struct sk_buff *,
- struct net_device *);
-
-static void isdn_net_ciscohdlck_connected(isdn_net_local *lp);
-static void isdn_net_ciscohdlck_disconnected(isdn_net_local *lp);
-
-char *isdn_net_revision = "$Revision: 1.1.2.2 $";
-
-/*
- * Code for raw-networking over ISDN
- */
-
-static void
-isdn_net_unreachable(struct net_device *dev, struct sk_buff *skb, char *reason)
-{
- if (skb) {
-
- u_short proto = ntohs(skb->protocol);
-
- printk(KERN_DEBUG "isdn_net: %s: %s, signalling dst_link_failure %s\n",
- dev->name,
- (reason != NULL) ? reason : "unknown",
- (proto != ETH_P_IP) ? "Protocol != ETH_P_IP" : "");
-
- dst_link_failure(skb);
- }
- else { /* dial not triggered by rawIP packet */
- printk(KERN_DEBUG "isdn_net: %s: %s\n",
- dev->name,
- (reason != NULL) ? reason : "reason unknown");
- }
-}
-
-static void
-isdn_net_reset(struct net_device *dev)
-{
-#ifdef CONFIG_ISDN_X25
- struct concap_device_ops *dops =
- ((isdn_net_local *)netdev_priv(dev))->dops;
- struct concap_proto *cprot =
- ((isdn_net_local *)netdev_priv(dev))->netdev->cprot;
-#endif
-#ifdef CONFIG_ISDN_X25
- if (cprot && cprot->pops && dops)
- cprot->pops->restart(cprot, dev, dops);
-#endif
-}
-
-/* Open/initialize the board. */
-static int
-isdn_net_open(struct net_device *dev)
-{
- int i;
- struct net_device *p;
- struct in_device *in_dev;
-
- /* moved here from isdn_net_reset, because only the master has an
- interface associated which is supposed to be started. BTW:
- we need to call netif_start_queue, not netif_wake_queue here */
- netif_start_queue(dev);
-
- isdn_net_reset(dev);
- /* Fill in the MAC-level header (not needed, but for compatibility... */
- for (i = 0; i < ETH_ALEN - sizeof(u32); i++)
- dev->dev_addr[i] = 0xfc;
- if ((in_dev = dev->ip_ptr) != NULL) {
- /*
- * Any address will do - we take the first
- */
- struct in_ifaddr *ifa = in_dev->ifa_list;
- if (ifa != NULL)
- memcpy(dev->dev_addr + 2, &ifa->ifa_local, 4);
- }
-
- /* If this interface has slaves, start them also */
- p = MASTER_TO_SLAVE(dev);
- if (p) {
- while (p) {
- isdn_net_reset(p);
- p = MASTER_TO_SLAVE(p);
- }
- }
- isdn_lock_drivers();
- return 0;
-}
-
-/*
- * Assign an ISDN-channel to a net-interface
- */
-static void
-isdn_net_bind_channel(isdn_net_local *lp, int idx)
-{
- lp->flags |= ISDN_NET_CONNECTED;
- lp->isdn_device = dev->drvmap[idx];
- lp->isdn_channel = dev->chanmap[idx];
- dev->rx_netdev[idx] = lp->netdev;
- dev->st_netdev[idx] = lp->netdev;
-}
-
-/*
- * unbind a net-interface (resets interface after an error)
- */
-static void
-isdn_net_unbind_channel(isdn_net_local *lp)
-{
- skb_queue_purge(&lp->super_tx_queue);
-
- if (!lp->master) { /* reset only master device */
- /* Moral equivalent of dev_purge_queues():
- BEWARE! This chunk of code cannot be called from hardware
- interrupt handler. I hope it is true. --ANK
- */
- qdisc_reset_all_tx(lp->netdev->dev);
- }
- lp->dialstate = 0;
- dev->rx_netdev[isdn_dc2minor(lp->isdn_device, lp->isdn_channel)] = NULL;
- dev->st_netdev[isdn_dc2minor(lp->isdn_device, lp->isdn_channel)] = NULL;
- if (lp->isdn_device != -1 && lp->isdn_channel != -1)
- isdn_free_channel(lp->isdn_device, lp->isdn_channel,
- ISDN_USAGE_NET);
- lp->flags &= ~ISDN_NET_CONNECTED;
- lp->isdn_device = -1;
- lp->isdn_channel = -1;
-}
-
-/*
- * Perform auto-hangup and cps-calculation for net-interfaces.
- *
- * auto-hangup:
- * Increment idle-counter (this counter is reset on any incoming or
- * outgoing packet), if counter exceeds configured limit either do a
- * hangup immediately or - if configured - wait until just before the next
- * charge-info.
- *
- * cps-calculation (needed for dynamic channel-bundling):
- * Since this function is called every second, simply reset the
- * byte-counter of the interface after copying it to the cps-variable.
- */
-static unsigned long last_jiffies = -HZ;
-
-void
-isdn_net_autohup(void)
-{
- isdn_net_dev *p = dev->netdev;
- int anymore;
-
- anymore = 0;
- while (p) {
- isdn_net_local *l = p->local;
- if (jiffies == last_jiffies)
- l->cps = l->transcount;
- else
- l->cps = (l->transcount * HZ) / (jiffies - last_jiffies);
- l->transcount = 0;
- if (dev->net_verbose > 3)
- printk(KERN_DEBUG "%s: %d bogocps\n", p->dev->name, l->cps);
- if ((l->flags & ISDN_NET_CONNECTED) && (!l->dialstate)) {
- anymore = 1;
- l->huptimer++;
- /*
- * if there is some dialmode where timeout-hangup
- * should _not_ be done, check for that here
- */
- if ((l->onhtime) &&
- (l->huptimer > l->onhtime))
- {
- if (l->hupflags & ISDN_MANCHARGE &&
- l->hupflags & ISDN_CHARGEHUP) {
- while (time_after(jiffies, l->chargetime + l->chargeint))
- l->chargetime += l->chargeint;
- if (time_after(jiffies, l->chargetime + l->chargeint - 2 * HZ))
- if (l->outgoing || l->hupflags & ISDN_INHUP)
- isdn_net_hangup(p->dev);
- } else if (l->outgoing) {
- if (l->hupflags & ISDN_CHARGEHUP) {
- if (l->hupflags & ISDN_WAITCHARGE) {
- printk(KERN_DEBUG "isdn_net: Hupflags of %s are %X\n",
- p->dev->name, l->hupflags);
- isdn_net_hangup(p->dev);
- } else if (time_after(jiffies, l->chargetime + l->chargeint)) {
- printk(KERN_DEBUG
- "isdn_net: %s: chtime = %lu, chint = %d\n",
- p->dev->name, l->chargetime, l->chargeint);
- isdn_net_hangup(p->dev);
- }
- } else
- isdn_net_hangup(p->dev);
- } else if (l->hupflags & ISDN_INHUP)
- isdn_net_hangup(p->dev);
- }
-
- if (dev->global_flags & ISDN_GLOBAL_STOPPED || (ISDN_NET_DIALMODE(*l) == ISDN_NET_DM_OFF)) {
- isdn_net_hangup(p->dev);
- break;
- }
- }
- p = (isdn_net_dev *) p->next;
- }
- last_jiffies = jiffies;
- isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, anymore);
-}
-
-static void isdn_net_lp_disconnected(isdn_net_local *lp)
-{
- isdn_net_rm_from_bundle(lp);
-}
-
-/*
- * Handle status-messages from ISDN-interfacecard.
- * This function is called from within the main-status-dispatcher
- * isdn_status_callback, which itself is called from the low-level driver.
- * Return: 1 = Event handled, 0 = not for us or unknown Event.
- */
-int
-isdn_net_stat_callback(int idx, isdn_ctrl *c)
-{
- isdn_net_dev *p = dev->st_netdev[idx];
- int cmd = c->command;
-
- if (p) {
- isdn_net_local *lp = p->local;
-#ifdef CONFIG_ISDN_X25
- struct concap_proto *cprot = lp->netdev->cprot;
- struct concap_proto_ops *pops = cprot ? cprot->pops : NULL;
-#endif
- switch (cmd) {
- case ISDN_STAT_BSENT:
- /* A packet has successfully been sent out */
- if ((lp->flags & ISDN_NET_CONNECTED) &&
- (!lp->dialstate)) {
- isdn_net_dec_frame_cnt(lp);
- lp->stats.tx_packets++;
- lp->stats.tx_bytes += c->parm.length;
- }
- return 1;
- case ISDN_STAT_DCONN:
- /* D-Channel is up */
- switch (lp->dialstate) {
- case 4:
- case 7:
- case 8:
- lp->dialstate++;
- return 1;
- case 12:
- lp->dialstate = 5;
- return 1;
- }
- break;
- case ISDN_STAT_DHUP:
- /* Either D-Channel-hangup or error during dialout */
-#ifdef CONFIG_ISDN_X25
- /* If we are not connencted then dialing had
- failed. If there are generic encap protocol
- receiver routines signal the closure of
- the link*/
-
- if (!(lp->flags & ISDN_NET_CONNECTED)
- && pops && pops->disconn_ind)
- pops->disconn_ind(cprot);
-#endif /* CONFIG_ISDN_X25 */
- if ((!lp->dialstate) && (lp->flags & ISDN_NET_CONNECTED)) {
- if (lp->p_encap == ISDN_NET_ENCAP_CISCOHDLCK)
- isdn_net_ciscohdlck_disconnected(lp);
-#ifdef CONFIG_ISDN_PPP
- if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
- isdn_ppp_free(lp);
-#endif
- isdn_net_lp_disconnected(lp);
- isdn_all_eaz(lp->isdn_device, lp->isdn_channel);
- printk(KERN_INFO "%s: remote hangup\n", p->dev->name);
- printk(KERN_INFO "%s: Chargesum is %d\n", p->dev->name,
- lp->charge);
- isdn_net_unbind_channel(lp);
- return 1;
- }
- break;
-#ifdef CONFIG_ISDN_X25
- case ISDN_STAT_BHUP:
- /* B-Channel-hangup */
- /* try if there are generic encap protocol
- receiver routines and signal the closure of
- the link */
- if (pops && pops->disconn_ind) {
- pops->disconn_ind(cprot);
- return 1;
- }
- break;
-#endif /* CONFIG_ISDN_X25 */
- case ISDN_STAT_BCONN:
- /* B-Channel is up */
- isdn_net_zero_frame_cnt(lp);
- switch (lp->dialstate) {
- case 5:
- case 6:
- case 7:
- case 8:
- case 9:
- case 10:
- case 12:
- if (lp->dialstate <= 6) {
- dev->usage[idx] |= ISDN_USAGE_OUTGOING;
- isdn_info_update();
- } else
- dev->rx_netdev[idx] = p;
- lp->dialstate = 0;
- isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 1);
- if (lp->p_encap == ISDN_NET_ENCAP_CISCOHDLCK)
- isdn_net_ciscohdlck_connected(lp);
- if (lp->p_encap != ISDN_NET_ENCAP_SYNCPPP) {
- if (lp->master) { /* is lp a slave? */
- isdn_net_dev *nd = ISDN_MASTER_PRIV(lp)->netdev;
- isdn_net_add_to_bundle(nd, lp);
- }
- }
- printk(KERN_INFO "isdn_net: %s connected\n", p->dev->name);
- /* If first Chargeinfo comes before B-Channel connect,
- * we correct the timestamp here.
- */
- lp->chargetime = jiffies;
-
- /* reset dial-timeout */
- lp->dialstarted = 0;
- lp->dialwait_timer = 0;
-
-#ifdef CONFIG_ISDN_PPP
- if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
- isdn_ppp_wakeup_daemon(lp);
-#endif
-#ifdef CONFIG_ISDN_X25
- /* try if there are generic concap receiver routines */
- if (pops)
- if (pops->connect_ind)
- pops->connect_ind(cprot);
-#endif /* CONFIG_ISDN_X25 */
- /* ppp needs to do negotiations first */
- if (lp->p_encap != ISDN_NET_ENCAP_SYNCPPP)
- isdn_net_device_wake_queue(lp);
- return 1;
- }
- break;
- case ISDN_STAT_NODCH:
- /* No D-Channel avail. */
- if (lp->dialstate == 4) {
- lp->dialstate--;
- return 1;
- }
- break;
- case ISDN_STAT_CINF:
- /* Charge-info from TelCo. Calculate interval between
- * charge-infos and set timestamp for last info for
- * usage by isdn_net_autohup()
- */
- lp->charge++;
- if (lp->hupflags & ISDN_HAVECHARGE) {
- lp->hupflags &= ~ISDN_WAITCHARGE;
- lp->chargeint = jiffies - lp->chargetime - (2 * HZ);
- }
- if (lp->hupflags & ISDN_WAITCHARGE)
- lp->hupflags |= ISDN_HAVECHARGE;
- lp->chargetime = jiffies;
- printk(KERN_DEBUG "isdn_net: Got CINF chargetime of %s now %lu\n",
- p->dev->name, lp->chargetime);
- return 1;
- }
- }
- return 0;
-}
-
-/*
- * Perform dialout for net-interfaces and timeout-handling for
- * D-Channel-up and B-Channel-up Messages.
- * This function is initially called from within isdn_net_start_xmit() or
- * or isdn_net_find_icall() after initializing the dialstate for an
- * interface. If further calls are needed, the function schedules itself
- * for a timer-callback via isdn_timer_function().
- * The dialstate is also affected by incoming status-messages from
- * the ISDN-Channel which are handled in isdn_net_stat_callback() above.
- */
-void
-isdn_net_dial(void)
-{
- isdn_net_dev *p = dev->netdev;
- int anymore = 0;
- int i;
- isdn_ctrl cmd;
- u_char *phone_number;
-
- while (p) {
- isdn_net_local *lp = p->local;
-
-#ifdef ISDN_DEBUG_NET_DIAL
- if (lp->dialstate)
- printk(KERN_DEBUG "%s: dialstate=%d\n", p->dev->name, lp->dialstate);
-#endif
- switch (lp->dialstate) {
- case 0:
- /* Nothing to do for this interface */
- break;
- case 1:
- /* Initiate dialout. Set phone-number-pointer to first number
- * of interface.
- */
- lp->dial = lp->phone[1];
- if (!lp->dial) {
- printk(KERN_WARNING "%s: phone number deleted?\n",
- p->dev->name);
- isdn_net_hangup(p->dev);
- break;
- }
- anymore = 1;
-
- if (lp->dialtimeout > 0)
- if (lp->dialstarted == 0 || time_after(jiffies, lp->dialstarted + lp->dialtimeout + lp->dialwait)) {
- lp->dialstarted = jiffies;
- lp->dialwait_timer = 0;
- }
-
- lp->dialstate++;
- /* Fall through */
- case 2:
- /* Prepare dialing. Clear EAZ, then set EAZ. */
- cmd.driver = lp->isdn_device;
- cmd.arg = lp->isdn_channel;
- cmd.command = ISDN_CMD_CLREAZ;
- isdn_command(&cmd);
- sprintf(cmd.parm.num, "%s", isdn_map_eaz2msn(lp->msn, cmd.driver));
- cmd.command = ISDN_CMD_SETEAZ;
- isdn_command(&cmd);
- lp->dialretry = 0;
- anymore = 1;
- lp->dialstate++;
- /* Fall through */
- case 3:
- /* Setup interface, dial current phone-number, switch to next number.
- * If list of phone-numbers is exhausted, increment
- * retry-counter.
- */
- if (dev->global_flags & ISDN_GLOBAL_STOPPED || (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF)) {
- char *s;
- if (dev->global_flags & ISDN_GLOBAL_STOPPED)
- s = "dial suppressed: isdn system stopped";
- else
- s = "dial suppressed: dialmode `off'";
- isdn_net_unreachable(p->dev, NULL, s);
- isdn_net_hangup(p->dev);
- break;
- }
- cmd.driver = lp->isdn_device;
- cmd.command = ISDN_CMD_SETL2;
- cmd.arg = lp->isdn_channel + (lp->l2_proto << 8);
- isdn_command(&cmd);
- cmd.driver = lp->isdn_device;
- cmd.command = ISDN_CMD_SETL3;
- cmd.arg = lp->isdn_channel + (lp->l3_proto << 8);
- isdn_command(&cmd);
- cmd.driver = lp->isdn_device;
- cmd.arg = lp->isdn_channel;
- if (!lp->dial) {
- printk(KERN_WARNING "%s: phone number deleted?\n",
- p->dev->name);
- isdn_net_hangup(p->dev);
- break;
- }
- if (!strncmp(lp->dial->num, "LEASED", strlen("LEASED"))) {
- lp->dialstate = 4;
- printk(KERN_INFO "%s: Open leased line ...\n", p->dev->name);
- } else {
- if (lp->dialtimeout > 0)
- if (time_after(jiffies, lp->dialstarted + lp->dialtimeout)) {
- lp->dialwait_timer = jiffies + lp->dialwait;
- lp->dialstarted = 0;
- isdn_net_unreachable(p->dev, NULL, "dial: timed out");
- isdn_net_hangup(p->dev);
- break;
- }
-
- cmd.driver = lp->isdn_device;
- cmd.command = ISDN_CMD_DIAL;
- cmd.parm.setup.si2 = 0;
-
- /* check for DOV */
- phone_number = lp->dial->num;
- if ((*phone_number == 'v') ||
- (*phone_number == 'V')) { /* DOV call */
- cmd.parm.setup.si1 = 1;
- } else { /* DATA call */
- cmd.parm.setup.si1 = 7;
- }
-
- strcpy(cmd.parm.setup.phone, phone_number);
- /*
- * Switch to next number or back to start if at end of list.
- */
- if (!(lp->dial = (isdn_net_phone *) lp->dial->next)) {
- lp->dial = lp->phone[1];
- lp->dialretry++;
-
- if (lp->dialretry > lp->dialmax) {
- if (lp->dialtimeout == 0) {
- lp->dialwait_timer = jiffies + lp->dialwait;
- lp->dialstarted = 0;
- isdn_net_unreachable(p->dev, NULL, "dial: tried all numbers dialmax times");
- }
- isdn_net_hangup(p->dev);
- break;
- }
- }
- sprintf(cmd.parm.setup.eazmsn, "%s",
- isdn_map_eaz2msn(lp->msn, cmd.driver));
- i = isdn_dc2minor(lp->isdn_device, lp->isdn_channel);
- if (i >= 0) {
- strcpy(dev->num[i], cmd.parm.setup.phone);
- dev->usage[i] |= ISDN_USAGE_OUTGOING;
- isdn_info_update();
- }
- printk(KERN_INFO "%s: dialing %d %s... %s\n", p->dev->name,
- lp->dialretry, cmd.parm.setup.phone,
- (cmd.parm.setup.si1 == 1) ? "DOV" : "");
- lp->dtimer = 0;
-#ifdef ISDN_DEBUG_NET_DIAL
- printk(KERN_DEBUG "dial: d=%d c=%d\n", lp->isdn_device,
- lp->isdn_channel);
-#endif
- isdn_command(&cmd);
- }
- lp->huptimer = 0;
- lp->outgoing = 1;
- if (lp->chargeint) {
- lp->hupflags |= ISDN_HAVECHARGE;
- lp->hupflags &= ~ISDN_WAITCHARGE;
- } else {
- lp->hupflags |= ISDN_WAITCHARGE;
- lp->hupflags &= ~ISDN_HAVECHARGE;
- }
- anymore = 1;
- lp->dialstate =
- (lp->cbdelay &&
- (lp->flags & ISDN_NET_CBOUT)) ? 12 : 4;
- break;
- case 4:
- /* Wait for D-Channel-connect.
- * If timeout, switch back to state 3.
- * Dialmax-handling moved to state 3.
- */
- if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10)
- lp->dialstate = 3;
- anymore = 1;
- break;
- case 5:
- /* Got D-Channel-Connect, send B-Channel-request */
- cmd.driver = lp->isdn_device;
- cmd.arg = lp->isdn_channel;
- cmd.command = ISDN_CMD_ACCEPTB;
- anymore = 1;
- lp->dtimer = 0;
- lp->dialstate++;
- isdn_command(&cmd);
- break;
- case 6:
- /* Wait for B- or D-Channel-connect. If timeout,
- * switch back to state 3.
- */
-#ifdef ISDN_DEBUG_NET_DIAL
- printk(KERN_DEBUG "dialtimer2: %d\n", lp->dtimer);
-#endif
- if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10)
- lp->dialstate = 3;
- anymore = 1;
- break;
- case 7:
- /* Got incoming Call, setup L2 and L3 protocols,
- * then wait for D-Channel-connect
- */
-#ifdef ISDN_DEBUG_NET_DIAL
- printk(KERN_DEBUG "dialtimer4: %d\n", lp->dtimer);
-#endif
- cmd.driver = lp->isdn_device;
- cmd.command = ISDN_CMD_SETL2;
- cmd.arg = lp->isdn_channel + (lp->l2_proto << 8);
- isdn_command(&cmd);
- cmd.driver = lp->isdn_device;
- cmd.command = ISDN_CMD_SETL3;
- cmd.arg = lp->isdn_channel + (lp->l3_proto << 8);
- isdn_command(&cmd);
- if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT15)
- isdn_net_hangup(p->dev);
- else {
- anymore = 1;
- lp->dialstate++;
- }
- break;
- case 9:
- /* Got incoming D-Channel-Connect, send B-Channel-request */
- cmd.driver = lp->isdn_device;
- cmd.arg = lp->isdn_channel;
- cmd.command = ISDN_CMD_ACCEPTB;
- isdn_command(&cmd);
- anymore = 1;
- lp->dtimer = 0;
- lp->dialstate++;
- break;
- case 8:
- case 10:
- /* Wait for B- or D-channel-connect */
-#ifdef ISDN_DEBUG_NET_DIAL
- printk(KERN_DEBUG "dialtimer4: %d\n", lp->dtimer);
-#endif
- if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10)
- isdn_net_hangup(p->dev);
- else
- anymore = 1;
- break;
- case 11:
- /* Callback Delay */
- if (lp->dtimer++ > lp->cbdelay)
- lp->dialstate = 1;
- anymore = 1;
- break;
- case 12:
- /* Remote does callback. Hangup after cbdelay, then wait for incoming
- * call (in state 4).
- */
- if (lp->dtimer++ > lp->cbdelay)
- {
- printk(KERN_INFO "%s: hangup waiting for callback ...\n", p->dev->name);
- lp->dtimer = 0;
- lp->dialstate = 4;
- cmd.driver = lp->isdn_device;
- cmd.command = ISDN_CMD_HANGUP;
- cmd.arg = lp->isdn_channel;
- isdn_command(&cmd);
- isdn_all_eaz(lp->isdn_device, lp->isdn_channel);
- }
- anymore = 1;
- break;
- default:
- printk(KERN_WARNING "isdn_net: Illegal dialstate %d for device %s\n",
- lp->dialstate, p->dev->name);
- }
- p = (isdn_net_dev *) p->next;
- }
- isdn_timer_ctrl(ISDN_TIMER_NETDIAL, anymore);
-}
-
-/*
- * Perform hangup for a net-interface.
- */
-void
-isdn_net_hangup(struct net_device *d)
-{
- isdn_net_local *lp = netdev_priv(d);
- isdn_ctrl cmd;
-#ifdef CONFIG_ISDN_X25
- struct concap_proto *cprot = lp->netdev->cprot;
- struct concap_proto_ops *pops = cprot ? cprot->pops : NULL;
-#endif
-
- if (lp->flags & ISDN_NET_CONNECTED) {
- if (lp->slave != NULL) {
- isdn_net_local *slp = ISDN_SLAVE_PRIV(lp);
- if (slp->flags & ISDN_NET_CONNECTED) {
- printk(KERN_INFO
- "isdn_net: hang up slave %s before %s\n",
- lp->slave->name, d->name);
- isdn_net_hangup(lp->slave);
- }
- }
- printk(KERN_INFO "isdn_net: local hangup %s\n", d->name);
-#ifdef CONFIG_ISDN_PPP
- if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
- isdn_ppp_free(lp);
-#endif
- isdn_net_lp_disconnected(lp);
-#ifdef CONFIG_ISDN_X25
- /* try if there are generic encap protocol
- receiver routines and signal the closure of
- the link */
- if (pops && pops->disconn_ind)
- pops->disconn_ind(cprot);
-#endif /* CONFIG_ISDN_X25 */
-
- cmd.driver = lp->isdn_device;
- cmd.command = ISDN_CMD_HANGUP;
- cmd.arg = lp->isdn_channel;
- isdn_command(&cmd);
- printk(KERN_INFO "%s: Chargesum is %d\n", d->name, lp->charge);
- isdn_all_eaz(lp->isdn_device, lp->isdn_channel);
- }
- isdn_net_unbind_channel(lp);
-}
-
-typedef struct {
- __be16 source;
- __be16 dest;
-} ip_ports;
-
-static void
-isdn_net_log_skb(struct sk_buff *skb, isdn_net_local *lp)
-{
- /* hopefully, this was set correctly */
- const u_char *p = skb_network_header(skb);
- unsigned short proto = ntohs(skb->protocol);
- int data_ofs;
- ip_ports *ipp;
- char addinfo[100];
-
- addinfo[0] = '\0';
- /* This check stolen from 2.1.72 dev_queue_xmit_nit() */
- if (p < skb->data || skb_network_header(skb) >= skb_tail_pointer(skb)) {
- /* fall back to old isdn_net_log_packet method() */
- char *buf = skb->data;
-
- printk(KERN_DEBUG "isdn_net: protocol %04x is buggy, dev %s\n", skb->protocol, lp->netdev->dev->name);
- p = buf;
- proto = ETH_P_IP;
- switch (lp->p_encap) {
- case ISDN_NET_ENCAP_IPTYP:
- proto = ntohs(*(__be16 *)&buf[0]);
- p = &buf[2];
- break;
- case ISDN_NET_ENCAP_ETHER:
- proto = ntohs(*(__be16 *)&buf[12]);
- p = &buf[14];
- break;
- case ISDN_NET_ENCAP_CISCOHDLC:
- proto = ntohs(*(__be16 *)&buf[2]);
- p = &buf[4];
- break;
-#ifdef CONFIG_ISDN_PPP
- case ISDN_NET_ENCAP_SYNCPPP:
- proto = ntohs(skb->protocol);
- p = &buf[IPPP_MAX_HEADER];
- break;
-#endif
- }
- }
- data_ofs = ((p[0] & 15) * 4);
- switch (proto) {
- case ETH_P_IP:
- switch (p[9]) {
- case 1:
- strcpy(addinfo, " ICMP");
- break;
- case 2:
- strcpy(addinfo, " IGMP");
- break;
- case 4:
- strcpy(addinfo, " IPIP");
- break;
- case 6:
- ipp = (ip_ports *) (&p[data_ofs]);
- sprintf(addinfo, " TCP, port: %d -> %d", ntohs(ipp->source),
- ntohs(ipp->dest));
- break;
- case 8:
- strcpy(addinfo, " EGP");
- break;
- case 12:
- strcpy(addinfo, " PUP");
- break;
- case 17:
- ipp = (ip_ports *) (&p[data_ofs]);
- sprintf(addinfo, " UDP, port: %d -> %d", ntohs(ipp->source),
- ntohs(ipp->dest));
- break;
- case 22:
- strcpy(addinfo, " IDP");
- break;
- }
- printk(KERN_INFO "OPEN: %pI4 -> %pI4%s\n",
- p + 12, p + 16, addinfo);
- break;
- case ETH_P_ARP:
- printk(KERN_INFO "OPEN: ARP %pI4 -> *.*.*.* ?%pI4\n",
- p + 14, p + 24);
- break;
- }
-}
-
-/*
- * this function is used to send supervisory data, i.e. data which was
- * not received from the network layer, but e.g. frames from ipppd, CCP
- * reset frames etc.
- */
-void isdn_net_write_super(isdn_net_local *lp, struct sk_buff *skb)
-{
- if (in_irq()) {
- // we can't grab the lock from irq context,
- // so we just queue the packet
- skb_queue_tail(&lp->super_tx_queue, skb);
- schedule_work(&lp->tqueue);
- return;
- }
-
- spin_lock_bh(&lp->xmit_lock);
- if (!isdn_net_lp_busy(lp)) {
- isdn_net_writebuf_skb(lp, skb);
- } else {
- skb_queue_tail(&lp->super_tx_queue, skb);
- }
- spin_unlock_bh(&lp->xmit_lock);
-}
-
-/*
- * called from tq_immediate
- */
-static void isdn_net_softint(struct work_struct *work)
-{
- isdn_net_local *lp = container_of(work, isdn_net_local, tqueue);
- struct sk_buff *skb;
-
- spin_lock_bh(&lp->xmit_lock);
- while (!isdn_net_lp_busy(lp)) {
- skb = skb_dequeue(&lp->super_tx_queue);
- if (!skb)
- break;
- isdn_net_writebuf_skb(lp, skb);
- }
- spin_unlock_bh(&lp->xmit_lock);
-}
-
-/*
- * all frames sent from the (net) LL to a HL driver should go via this function
- * it's serialized by the caller holding the lp->xmit_lock spinlock
- */
-void isdn_net_writebuf_skb(isdn_net_local *lp, struct sk_buff *skb)
-{
- int ret;
- int len = skb->len; /* save len */
-
- /* before obtaining the lock the caller should have checked that
- the lp isn't busy */
- if (isdn_net_lp_busy(lp)) {
- printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__);
- goto error;
- }
-
- if (!(lp->flags & ISDN_NET_CONNECTED)) {
- printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__);
- goto error;
- }
- ret = isdn_writebuf_skb_stub(lp->isdn_device, lp->isdn_channel, 1, skb);
- if (ret != len) {
- /* we should never get here */
- printk(KERN_WARNING "%s: HL driver queue full\n", lp->netdev->dev->name);
- goto error;
- }
-
- lp->transcount += len;
- isdn_net_inc_frame_cnt(lp);
- return;
-
-error:
- dev_kfree_skb(skb);
- lp->stats.tx_errors++;
-
-}
-
-
-/*
- * Helper function for isdn_net_start_xmit.
- * When called, the connection is already established.
- * Based on cps-calculation, check if device is overloaded.
- * If so, and if a slave exists, trigger dialing for it.
- * If any slave is online, deliver packets using a simple round robin
- * scheme.
- *
- * Return: 0 on success, !0 on failure.
- */
-
-static int
-isdn_net_xmit(struct net_device *ndev, struct sk_buff *skb)
-{
- isdn_net_dev *nd;
- isdn_net_local *slp;
- isdn_net_local *lp = netdev_priv(ndev);
- int retv = NETDEV_TX_OK;
-
- if (((isdn_net_local *) netdev_priv(ndev))->master) {
- printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__);
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
-
- /* For the other encaps the header has already been built */
-#ifdef CONFIG_ISDN_PPP
- if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) {
- return isdn_ppp_xmit(skb, ndev);
- }
-#endif
- nd = ((isdn_net_local *) netdev_priv(ndev))->netdev;
- lp = isdn_net_get_locked_lp(nd);
- if (!lp) {
- printk(KERN_WARNING "%s: all channels busy - requeuing!\n", ndev->name);
- return NETDEV_TX_BUSY;
- }
- /* we have our lp locked from now on */
-
- /* Reset hangup-timeout */
- lp->huptimer = 0; // FIXME?
- isdn_net_writebuf_skb(lp, skb);
- spin_unlock_bh(&lp->xmit_lock);
-
- /* the following stuff is here for backwards compatibility.
- * in future, start-up and hangup of slaves (based on current load)
- * should move to userspace and get based on an overall cps
- * calculation
- */
- if (lp->cps > lp->triggercps) {
- if (lp->slave) {
- if (!lp->sqfull) {
- /* First time overload: set timestamp only */
- lp->sqfull = 1;
- lp->sqfull_stamp = jiffies;
- } else {
- /* subsequent overload: if slavedelay exceeded, start dialing */
- if (time_after(jiffies, lp->sqfull_stamp + lp->slavedelay)) {
- slp = ISDN_SLAVE_PRIV(lp);
- if (!(slp->flags & ISDN_NET_CONNECTED)) {
- isdn_net_force_dial_lp(ISDN_SLAVE_PRIV(lp));
- }
- }
- }
- }
- } else {
- if (lp->sqfull && time_after(jiffies, lp->sqfull_stamp + lp->slavedelay + (10 * HZ))) {
- lp->sqfull = 0;
- }
- /* this is a hack to allow auto-hangup for slaves on moderate loads */
- nd->queue = nd->local;
- }
-
- return retv;
-
-}
-
-static void
-isdn_net_adjust_hdr(struct sk_buff *skb, struct net_device *dev)
-{
- isdn_net_local *lp = netdev_priv(dev);
- if (!skb)
- return;
- if (lp->p_encap == ISDN_NET_ENCAP_ETHER) {
- const int pullsize = skb_network_offset(skb) - ETH_HLEN;
- if (pullsize > 0) {
- printk(KERN_DEBUG "isdn_net: Pull junk %d\n", pullsize);
- skb_pull(skb, pullsize);
- }
- }
-}
-
-
-static void isdn_net_tx_timeout(struct net_device *ndev)
-{
- isdn_net_local *lp = netdev_priv(ndev);
-
- printk(KERN_WARNING "isdn_tx_timeout dev %s dialstate %d\n", ndev->name, lp->dialstate);
- if (!lp->dialstate) {
- lp->stats.tx_errors++;
- /*
- * There is a certain probability that this currently
- * works at all because if we always wake up the interface,
- * then upper layer will try to send the next packet
- * immediately. And then, the old clean_up logic in the
- * driver will hopefully continue to work as it used to do.
- *
- * This is rather primitive right know, we better should
- * clean internal queues here, in particular for multilink and
- * ppp, and reset HL driver's channel, too. --HE
- *
- * actually, this may not matter at all, because ISDN hardware
- * should not see transmitter hangs at all IMO
- * changed KERN_DEBUG to KERN_WARNING to find out if this is
- * ever called --KG
- */
- }
- netif_trans_update(ndev);
- netif_wake_queue(ndev);
-}
-
-/*
- * Try sending a packet.
- * If this interface isn't connected to a ISDN-Channel, find a free channel,
- * and start dialing.
- */
-static netdev_tx_t
-isdn_net_start_xmit(struct sk_buff *skb, struct net_device *ndev)
-{
- isdn_net_local *lp = netdev_priv(ndev);
-#ifdef CONFIG_ISDN_X25
- struct concap_proto *cprot = lp->netdev->cprot;
-/* At this point hard_start_xmit() passes control to the encapsulation
- protocol (if present).
- For X.25 auto-dialing is completly bypassed because:
- - It does not conform with the semantics of a reliable datalink
- service as needed by X.25 PLP.
- - I don't want that the interface starts dialing when the network layer
- sends a message which requests to disconnect the lapb link (or if it
- sends any other message not resulting in data transmission).
- Instead, dialing will be initiated by the encapsulation protocol entity
- when a dl_establish request is received from the upper layer.
-*/
- if (cprot && cprot->pops) {
- int ret = cprot->pops->encap_and_xmit(cprot, skb);
-
- if (ret)
- netif_stop_queue(ndev);
- return ret;
- } else
-#endif
- /* auto-dialing xmit function */
- {
-#ifdef ISDN_DEBUG_NET_DUMP
- u_char *buf;
-#endif
- isdn_net_adjust_hdr(skb, ndev);
-#ifdef ISDN_DEBUG_NET_DUMP
- buf = skb->data;
- isdn_dumppkt("S:", buf, skb->len, 40);
-#endif
-
- if (!(lp->flags & ISDN_NET_CONNECTED)) {
- int chi;
- /* only do autodial if allowed by config */
- if (!(ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_AUTO)) {
- isdn_net_unreachable(ndev, skb, "dial rejected: interface not in dialmode `auto'");
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
- if (lp->phone[1]) {
- ulong flags;
-
- if (lp->dialwait_timer <= 0)
- if (lp->dialstarted > 0 && lp->dialtimeout > 0 && time_before(jiffies, lp->dialstarted + lp->dialtimeout + lp->dialwait))
- lp->dialwait_timer = lp->dialstarted + lp->dialtimeout + lp->dialwait;
-
- if (lp->dialwait_timer > 0) {
- if (time_before(jiffies, lp->dialwait_timer)) {
- isdn_net_unreachable(ndev, skb, "dial rejected: retry-time not reached");
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- } else
- lp->dialwait_timer = 0;
- }
- /* Grab a free ISDN-Channel */
- spin_lock_irqsave(&dev->lock, flags);
- if (((chi =
- isdn_get_free_channel(
- ISDN_USAGE_NET,
- lp->l2_proto,
- lp->l3_proto,
- lp->pre_device,
- lp->pre_channel,
- lp->msn)
- ) < 0) &&
- ((chi =
- isdn_get_free_channel(
- ISDN_USAGE_NET,
- lp->l2_proto,
- lp->l3_proto,
- lp->pre_device,
- lp->pre_channel^1,
- lp->msn)
- ) < 0)) {
- spin_unlock_irqrestore(&dev->lock, flags);
- isdn_net_unreachable(ndev, skb,
- "No channel");
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
- /* Log packet, which triggered dialing */
- if (dev->net_verbose)
- isdn_net_log_skb(skb, lp);
- lp->dialstate = 1;
- /* Connect interface with channel */
- isdn_net_bind_channel(lp, chi);
-#ifdef CONFIG_ISDN_PPP
- if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) {
- /* no 'first_skb' handling for syncPPP */
- if (isdn_ppp_bind(lp) < 0) {
- dev_kfree_skb(skb);
- isdn_net_unbind_channel(lp);
- spin_unlock_irqrestore(&dev->lock, flags);
- return NETDEV_TX_OK; /* STN (skb to nirvana) ;) */
- }
-#ifdef CONFIG_IPPP_FILTER
- if (isdn_ppp_autodial_filter(skb, lp)) {
- isdn_ppp_free(lp);
- isdn_net_unbind_channel(lp);
- spin_unlock_irqrestore(&dev->lock, flags);
- isdn_net_unreachable(ndev, skb, "dial rejected: packet filtered");
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
-#endif
- spin_unlock_irqrestore(&dev->lock, flags);
- isdn_net_dial(); /* Initiate dialing */
- netif_stop_queue(ndev);
- return NETDEV_TX_BUSY; /* let upper layer requeue skb packet */
- }
-#endif
- /* Initiate dialing */
- spin_unlock_irqrestore(&dev->lock, flags);
- isdn_net_dial();
- isdn_net_device_stop_queue(lp);
- return NETDEV_TX_BUSY;
- } else {
- isdn_net_unreachable(ndev, skb,
- "No phone number");
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
- } else {
- /* Device is connected to an ISDN channel */
- netif_trans_update(ndev);
- if (!lp->dialstate) {
- /* ISDN connection is established, try sending */
- int ret;
- ret = (isdn_net_xmit(ndev, skb));
- if (ret) netif_stop_queue(ndev);
- return ret;
- } else
- netif_stop_queue(ndev);
- }
- }
- return NETDEV_TX_BUSY;
-}
-
-/*
- * Shutdown a net-interface.
- */
-static int
-isdn_net_close(struct net_device *dev)
-{
- struct net_device *p;
-#ifdef CONFIG_ISDN_X25
- struct concap_proto *cprot =
- ((isdn_net_local *)netdev_priv(dev))->netdev->cprot;
- /* printk(KERN_DEBUG "isdn_net_close %s\n" , dev-> name); */
-#endif
-
-#ifdef CONFIG_ISDN_X25
- if (cprot && cprot->pops) cprot->pops->close(cprot);
-#endif
- netif_stop_queue(dev);
- p = MASTER_TO_SLAVE(dev);
- if (p) {
- /* If this interface has slaves, stop them also */
- while (p) {
-#ifdef CONFIG_ISDN_X25
- cprot = ((isdn_net_local *)netdev_priv(p))
- ->netdev->cprot;
- if (cprot && cprot->pops)
- cprot->pops->close(cprot);
-#endif
- isdn_net_hangup(p);
- p = MASTER_TO_SLAVE(p);
- }
- }
- isdn_net_hangup(dev);
- isdn_unlock_drivers();
- return 0;
-}
-
-/*
- * Get statistics
- */
-static struct net_device_stats *
-isdn_net_get_stats(struct net_device *dev)
-{
- isdn_net_local *lp = netdev_priv(dev);
- return &lp->stats;
-}
-
-/* This is simply a copy from std. eth.c EXCEPT we pull ETH_HLEN
- * instead of dev->hard_header_len off. This is done because the
- * lowlevel-driver has already pulled off its stuff when we get
- * here and this routine only gets called with p_encap == ETHER.
- * Determine the packet's protocol ID. The rule here is that we
- * assume 802.3 if the type field is short enough to be a length.
- * This is normal practice and works for any 'now in use' protocol.
- */
-
-static __be16
-isdn_net_type_trans(struct sk_buff *skb, struct net_device *dev)
-{
- struct ethhdr *eth;
- unsigned char *rawp;
-
- skb_reset_mac_header(skb);
- skb_pull(skb, ETH_HLEN);
- eth = eth_hdr(skb);
-
- if (*eth->h_dest & 1) {
- if (ether_addr_equal(eth->h_dest, dev->broadcast))
- skb->pkt_type = PACKET_BROADCAST;
- else
- skb->pkt_type = PACKET_MULTICAST;
- }
- /*
- * This ALLMULTI check should be redundant by 1.4
- * so don't forget to remove it.
- */
-
- else if (dev->flags & (IFF_PROMISC /*| IFF_ALLMULTI*/)) {
- if (!ether_addr_equal(eth->h_dest, dev->dev_addr))
- skb->pkt_type = PACKET_OTHERHOST;
- }
- if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN)
- return eth->h_proto;
-
- rawp = skb->data;
-
- /*
- * This is a magic hack to spot IPX packets. Older Novell breaks
- * the protocol design and runs IPX over 802.3 without an 802.2 LLC
- * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This
- * won't work for fault tolerant netware but does for the rest.
- */
- if (*(unsigned short *) rawp == 0xFFFF)
- return htons(ETH_P_802_3);
- /*
- * Real 802.2 LLC
- */
- return htons(ETH_P_802_2);
-}
-
-
-/*
- * CISCO HDLC keepalive specific stuff
- */
-static struct sk_buff*
-isdn_net_ciscohdlck_alloc_skb(isdn_net_local *lp, int len)
-{
- unsigned short hl = dev->drv[lp->isdn_device]->interface->hl_hdrlen;
- struct sk_buff *skb;
-
- skb = alloc_skb(hl + len, GFP_ATOMIC);
- if (skb)
- skb_reserve(skb, hl);
- else
- printk("isdn out of mem at %s:%d!\n", __FILE__, __LINE__);
- return skb;
-}
-
-/* cisco hdlck device private ioctls */
-static int
-isdn_ciscohdlck_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-{
- isdn_net_local *lp = netdev_priv(dev);
- unsigned long len = 0;
- unsigned long expires = 0;
- int tmp = 0;
- int period = lp->cisco_keepalive_period;
- s8 debserint = lp->cisco_debserint;
- int rc = 0;
-
- if (lp->p_encap != ISDN_NET_ENCAP_CISCOHDLCK)
- return -EINVAL;
-
- switch (cmd) {
- /* get/set keepalive period */
- case SIOCGKEEPPERIOD:
- len = (unsigned long)sizeof(lp->cisco_keepalive_period);
- if (copy_to_user(ifr->ifr_data,
- &lp->cisco_keepalive_period, len))
- rc = -EFAULT;
- break;
- case SIOCSKEEPPERIOD:
- tmp = lp->cisco_keepalive_period;
- len = (unsigned long)sizeof(lp->cisco_keepalive_period);
- if (copy_from_user(&period, ifr->ifr_data, len))
- rc = -EFAULT;
- if ((period > 0) && (period <= 32767))
- lp->cisco_keepalive_period = period;
- else
- rc = -EINVAL;
- if (!rc && (tmp != lp->cisco_keepalive_period)) {
- expires = (unsigned long)(jiffies +
- lp->cisco_keepalive_period * HZ);
- mod_timer(&lp->cisco_timer, expires);
- printk(KERN_INFO "%s: Keepalive period set "
- "to %d seconds.\n",
- dev->name, lp->cisco_keepalive_period);
- }
- break;
-
- /* get/set debugging */
- case SIOCGDEBSERINT:
- len = (unsigned long)sizeof(lp->cisco_debserint);
- if (copy_to_user(ifr->ifr_data,
- &lp->cisco_debserint, len))
- rc = -EFAULT;
- break;
- case SIOCSDEBSERINT:
- len = (unsigned long)sizeof(lp->cisco_debserint);
- if (copy_from_user(&debserint,
- ifr->ifr_data, len))
- rc = -EFAULT;
- if ((debserint >= 0) && (debserint <= 64))
- lp->cisco_debserint = debserint;
- else
- rc = -EINVAL;
- break;
-
- default:
- rc = -EINVAL;
- break;
- }
- return (rc);
-}
-
-
-static int isdn_net_ioctl(struct net_device *dev,
- struct ifreq *ifr, int cmd)
-{
- isdn_net_local *lp = netdev_priv(dev);
-
- switch (lp->p_encap) {
-#ifdef CONFIG_ISDN_PPP
- case ISDN_NET_ENCAP_SYNCPPP:
- return isdn_ppp_dev_ioctl(dev, ifr, cmd);
-#endif
- case ISDN_NET_ENCAP_CISCOHDLCK:
- return isdn_ciscohdlck_dev_ioctl(dev, ifr, cmd);
- default:
- return -EINVAL;
- }
-}
-
-/* called via cisco_timer.function */
-static void
-isdn_net_ciscohdlck_slarp_send_keepalive(struct timer_list *t)
-{
- isdn_net_local *lp = from_timer(lp, t, cisco_timer);
- struct sk_buff *skb;
- unsigned char *p;
- unsigned long last_cisco_myseq = lp->cisco_myseq;
- int myseq_diff = 0;
-
- if (!(lp->flags & ISDN_NET_CONNECTED) || lp->dialstate) {
- printk("isdn BUG at %s:%d!\n", __FILE__, __LINE__);
- return;
- }
- lp->cisco_myseq++;
-
- myseq_diff = (lp->cisco_myseq - lp->cisco_mineseen);
- if ((lp->cisco_line_state) && ((myseq_diff >= 3) || (myseq_diff <= -3))) {
- /* line up -> down */
- lp->cisco_line_state = 0;
- printk(KERN_WARNING
- "UPDOWN: Line protocol on Interface %s,"
- " changed state to down\n", lp->netdev->dev->name);
- /* should stop routing higher-level data across */
- } else if ((!lp->cisco_line_state) &&
- (myseq_diff >= 0) && (myseq_diff <= 2)) {
- /* line down -> up */
- lp->cisco_line_state = 1;
- printk(KERN_WARNING
- "UPDOWN: Line protocol on Interface %s,"
- " changed state to up\n", lp->netdev->dev->name);
- /* restart routing higher-level data across */
- }
-
- if (lp->cisco_debserint)
- printk(KERN_DEBUG "%s: HDLC "
- "myseq %lu, mineseen %lu%c, yourseen %lu, %s\n",
- lp->netdev->dev->name, last_cisco_myseq, lp->cisco_mineseen,
- ((last_cisco_myseq == lp->cisco_mineseen) ? '*' : 040),
- lp->cisco_yourseq,
- ((lp->cisco_line_state) ? "line up" : "line down"));
-
- skb = isdn_net_ciscohdlck_alloc_skb(lp, 4 + 14);
- if (!skb)
- return;
-
- p = skb_put(skb, 4 + 14);
-
- /* cisco header */
- *(u8 *)(p + 0) = CISCO_ADDR_UNICAST;
- *(u8 *)(p + 1) = CISCO_CTRL;
- *(__be16 *)(p + 2) = cpu_to_be16(CISCO_TYPE_SLARP);
-
- /* slarp keepalive */
- *(__be32 *)(p + 4) = cpu_to_be32(CISCO_SLARP_KEEPALIVE);
- *(__be32 *)(p + 8) = cpu_to_be32(lp->cisco_myseq);
- *(__be32 *)(p + 12) = cpu_to_be32(lp->cisco_yourseq);
- *(__be16 *)(p + 16) = cpu_to_be16(0xffff); // reliability, always 0xffff
- p += 18;
-
- isdn_net_write_super(lp, skb);
-
- lp->cisco_timer.expires = jiffies + lp->cisco_keepalive_period * HZ;
-
- add_timer(&lp->cisco_timer);
-}
-
-static void
-isdn_net_ciscohdlck_slarp_send_request(isdn_net_local *lp)
-{
- struct sk_buff *skb;
- unsigned char *p;
-
- skb = isdn_net_ciscohdlck_alloc_skb(lp, 4 + 14);
- if (!skb)
- return;
-
- p = skb_put(skb, 4 + 14);
-
- /* cisco header */
- *(u8 *)(p + 0) = CISCO_ADDR_UNICAST;
- *(u8 *)(p + 1) = CISCO_CTRL;
- *(__be16 *)(p + 2) = cpu_to_be16(CISCO_TYPE_SLARP);
-
- /* slarp request */
- *(__be32 *)(p + 4) = cpu_to_be32(CISCO_SLARP_REQUEST);
- *(__be32 *)(p + 8) = cpu_to_be32(0); // address
- *(__be32 *)(p + 12) = cpu_to_be32(0); // netmask
- *(__be16 *)(p + 16) = cpu_to_be16(0); // unused
- p += 18;
-
- isdn_net_write_super(lp, skb);
-}
-
-static void
-isdn_net_ciscohdlck_connected(isdn_net_local *lp)
-{
- lp->cisco_myseq = 0;
- lp->cisco_mineseen = 0;
- lp->cisco_yourseq = 0;
- lp->cisco_keepalive_period = ISDN_TIMER_KEEPINT;
- lp->cisco_last_slarp_in = 0;
- lp->cisco_line_state = 0;
- lp->cisco_debserint = 0;
-
- /* send slarp request because interface/seq.no.s reset */
- isdn_net_ciscohdlck_slarp_send_request(lp);
-
- timer_setup(&lp->cisco_timer,
- isdn_net_ciscohdlck_slarp_send_keepalive, 0);
- lp->cisco_timer.expires = jiffies + lp->cisco_keepalive_period * HZ;
- add_timer(&lp->cisco_timer);
-}
-
-static void
-isdn_net_ciscohdlck_disconnected(isdn_net_local *lp)
-{
- del_timer(&lp->cisco_timer);
-}
-
-static void
-isdn_net_ciscohdlck_slarp_send_reply(isdn_net_local *lp)
-{
- struct sk_buff *skb;
- unsigned char *p;
- struct in_device *in_dev = NULL;
- __be32 addr = 0; /* local ipv4 address */
- __be32 mask = 0; /* local netmask */
-
- if ((in_dev = lp->netdev->dev->ip_ptr) != NULL) {
- /* take primary(first) address of interface */
- struct in_ifaddr *ifa = in_dev->ifa_list;
- if (ifa != NULL) {
- addr = ifa->ifa_local;
- mask = ifa->ifa_mask;
- }
- }
-
- skb = isdn_net_ciscohdlck_alloc_skb(lp, 4 + 14);
- if (!skb)
- return;
-
- p = skb_put(skb, 4 + 14);
-
- /* cisco header */
- *(u8 *)(p + 0) = CISCO_ADDR_UNICAST;
- *(u8 *)(p + 1) = CISCO_CTRL;
- *(__be16 *)(p + 2) = cpu_to_be16(CISCO_TYPE_SLARP);
-
- /* slarp reply, send own ip/netmask; if values are nonsense remote
- * should think we are unable to provide it with an address via SLARP */
- *(__be32 *)(p + 4) = cpu_to_be32(CISCO_SLARP_REPLY);
- *(__be32 *)(p + 8) = addr; // address
- *(__be32 *)(p + 12) = mask; // netmask
- *(__be16 *)(p + 16) = cpu_to_be16(0); // unused
- p += 18;
-
- isdn_net_write_super(lp, skb);
-}
-
-static void
-isdn_net_ciscohdlck_slarp_in(isdn_net_local *lp, struct sk_buff *skb)
-{
- unsigned char *p;
- int period;
- u32 code;
- u32 my_seq;
- u32 your_seq;
- __be32 local;
- __be32 *addr, *mask;
-
- if (skb->len < 14)
- return;
-
- p = skb->data;
- code = be32_to_cpup((__be32 *)p);
- p += 4;
-
- switch (code) {
- case CISCO_SLARP_REQUEST:
- lp->cisco_yourseq = 0;
- isdn_net_ciscohdlck_slarp_send_reply(lp);
- break;
- case CISCO_SLARP_REPLY:
- addr = (__be32 *)p;
- mask = (__be32 *)(p + 4);
- if (*mask != cpu_to_be32(0xfffffffc))
- goto slarp_reply_out;
- if ((*addr & cpu_to_be32(3)) == cpu_to_be32(0) ||
- (*addr & cpu_to_be32(3)) == cpu_to_be32(3))
- goto slarp_reply_out;
- local = *addr ^ cpu_to_be32(3);
- printk(KERN_INFO "%s: got slarp reply: remote ip: %pI4, local ip: %pI4 mask: %pI4\n",
- lp->netdev->dev->name, addr, &local, mask);
- break;
- slarp_reply_out:
- printk(KERN_INFO "%s: got invalid slarp reply (%pI4/%pI4) - ignored\n",
- lp->netdev->dev->name, addr, mask);
- break;
- case CISCO_SLARP_KEEPALIVE:
- period = (int)((jiffies - lp->cisco_last_slarp_in
- + HZ / 2 - 1) / HZ);
- if (lp->cisco_debserint &&
- (period != lp->cisco_keepalive_period) &&
- lp->cisco_last_slarp_in) {
- printk(KERN_DEBUG "%s: Keepalive period mismatch - "
- "is %d but should be %d.\n",
- lp->netdev->dev->name, period,
- lp->cisco_keepalive_period);
- }
- lp->cisco_last_slarp_in = jiffies;
- my_seq = be32_to_cpup((__be32 *)(p + 0));
- your_seq = be32_to_cpup((__be32 *)(p + 4));
- p += 10;
- lp->cisco_yourseq = my_seq;
- lp->cisco_mineseen = your_seq;
- break;
- }
-}
-
-static void
-isdn_net_ciscohdlck_receive(isdn_net_local *lp, struct sk_buff *skb)
-{
- unsigned char *p;
- u8 addr;
- u8 ctrl;
- u16 type;
-
- if (skb->len < 4)
- goto out_free;
-
- p = skb->data;
- addr = *(u8 *)(p + 0);
- ctrl = *(u8 *)(p + 1);
- type = be16_to_cpup((__be16 *)(p + 2));
- p += 4;
- skb_pull(skb, 4);
-
- if (addr != CISCO_ADDR_UNICAST && addr != CISCO_ADDR_BROADCAST) {
- printk(KERN_WARNING "%s: Unknown Cisco addr 0x%02x\n",
- lp->netdev->dev->name, addr);
- goto out_free;
- }
- if (ctrl != CISCO_CTRL) {
- printk(KERN_WARNING "%s: Unknown Cisco ctrl 0x%02x\n",
- lp->netdev->dev->name, ctrl);
- goto out_free;
- }
-
- switch (type) {
- case CISCO_TYPE_SLARP:
- isdn_net_ciscohdlck_slarp_in(lp, skb);
- goto out_free;
- case CISCO_TYPE_CDP:
- if (lp->cisco_debserint)
- printk(KERN_DEBUG "%s: Received CDP packet. use "
- "\"no cdp enable\" on cisco.\n",
- lp->netdev->dev->name);
- goto out_free;
- default:
- /* no special cisco protocol */
- skb->protocol = htons(type);
- netif_rx(skb);
- return;
- }
-
-out_free:
- kfree_skb(skb);
-}
-
-/*
- * Got a packet from ISDN-Channel.
- */
-static void
-isdn_net_receive(struct net_device *ndev, struct sk_buff *skb)
-{
- isdn_net_local *lp = netdev_priv(ndev);
- isdn_net_local *olp = lp; /* original 'lp' */
-#ifdef CONFIG_ISDN_X25
- struct concap_proto *cprot = lp->netdev->cprot;
-#endif
- lp->transcount += skb->len;
-
- lp->stats.rx_packets++;
- lp->stats.rx_bytes += skb->len;
- if (lp->master) {
- /* Bundling: If device is a slave-device, deliver to master, also
- * handle master's statistics and hangup-timeout
- */
- ndev = lp->master;
- lp = netdev_priv(ndev);
- lp->stats.rx_packets++;
- lp->stats.rx_bytes += skb->len;
- }
- skb->dev = ndev;
- skb->pkt_type = PACKET_HOST;
- skb_reset_mac_header(skb);
-#ifdef ISDN_DEBUG_NET_DUMP
- isdn_dumppkt("R:", skb->data, skb->len, 40);
-#endif
- switch (lp->p_encap) {
- case ISDN_NET_ENCAP_ETHER:
- /* Ethernet over ISDN */
- olp->huptimer = 0;
- lp->huptimer = 0;
- skb->protocol = isdn_net_type_trans(skb, ndev);
- break;
- case ISDN_NET_ENCAP_UIHDLC:
- /* HDLC with UI-frame (for ispa with -h1 option) */
- olp->huptimer = 0;
- lp->huptimer = 0;
- skb_pull(skb, 2);
- /* Fall through */
- case ISDN_NET_ENCAP_RAWIP:
- /* RAW-IP without MAC-Header */
- olp->huptimer = 0;
- lp->huptimer = 0;
- skb->protocol = htons(ETH_P_IP);
- break;
- case ISDN_NET_ENCAP_CISCOHDLCK:
- isdn_net_ciscohdlck_receive(lp, skb);
- return;
- case ISDN_NET_ENCAP_CISCOHDLC:
- /* CISCO-HDLC IP with type field and fake I-frame-header */
- skb_pull(skb, 2);
- /* Fall through */
- case ISDN_NET_ENCAP_IPTYP:
- /* IP with type field */
- olp->huptimer = 0;
- lp->huptimer = 0;
- skb->protocol = *(__be16 *)&(skb->data[0]);
- skb_pull(skb, 2);
- if (*(unsigned short *) skb->data == 0xFFFF)
- skb->protocol = htons(ETH_P_802_3);
- break;
-#ifdef CONFIG_ISDN_PPP
- case ISDN_NET_ENCAP_SYNCPPP:
- /* huptimer is done in isdn_ppp_push_higher */
- isdn_ppp_receive(lp->netdev, olp, skb);
- return;
-#endif
-
- default:
-#ifdef CONFIG_ISDN_X25
- /* try if there are generic sync_device receiver routines */
- if (cprot) if (cprot->pops)
- if (cprot->pops->data_ind) {
- cprot->pops->data_ind(cprot, skb);
- return;
- };
-#endif /* CONFIG_ISDN_X25 */
- printk(KERN_WARNING "%s: unknown encapsulation, dropping\n",
- lp->netdev->dev->name);
- kfree_skb(skb);
- return;
- }
-
- netif_rx(skb);
- return;
-}
-
-/*
- * A packet arrived via ISDN. Search interface-chain for a corresponding
- * interface. If found, deliver packet to receiver-function and return 1,
- * else return 0.
- */
-int
-isdn_net_rcv_skb(int idx, struct sk_buff *skb)
-{
- isdn_net_dev *p = dev->rx_netdev[idx];
-
- if (p) {
- isdn_net_local *lp = p->local;
- if ((lp->flags & ISDN_NET_CONNECTED) &&
- (!lp->dialstate)) {
- isdn_net_receive(p->dev, skb);
- return 1;
- }
- }
- return 0;
-}
-
-/*
- * build an header
- * depends on encaps that is being used.
- */
-
-static int isdn_net_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type,
- const void *daddr, const void *saddr, unsigned plen)
-{
- isdn_net_local *lp = netdev_priv(dev);
- unsigned char *p;
- int len = 0;
-
- switch (lp->p_encap) {
- case ISDN_NET_ENCAP_ETHER:
- len = eth_header(skb, dev, type, daddr, saddr, plen);
- break;
-#ifdef CONFIG_ISDN_PPP
- case ISDN_NET_ENCAP_SYNCPPP:
- /* stick on a fake header to keep fragmentation code happy. */
- len = IPPP_MAX_HEADER;
- skb_push(skb, len);
- break;
-#endif
- case ISDN_NET_ENCAP_RAWIP:
- printk(KERN_WARNING "isdn_net_header called with RAW_IP!\n");
- len = 0;
- break;
- case ISDN_NET_ENCAP_IPTYP:
- /* ethernet type field */
- *((__be16 *)skb_push(skb, 2)) = htons(type);
- len = 2;
- break;
- case ISDN_NET_ENCAP_UIHDLC:
- /* HDLC with UI-Frames (for ispa with -h1 option) */
- *((__be16 *)skb_push(skb, 2)) = htons(0x0103);
- len = 2;
- break;
- case ISDN_NET_ENCAP_CISCOHDLC:
- case ISDN_NET_ENCAP_CISCOHDLCK:
- p = skb_push(skb, 4);
- *(u8 *)(p + 0) = CISCO_ADDR_UNICAST;
- *(u8 *)(p + 1) = CISCO_CTRL;
- *(__be16 *)(p + 2) = cpu_to_be16(type);
- p += 4;
- len = 4;
- break;
-#ifdef CONFIG_ISDN_X25
- default:
- /* try if there are generic concap protocol routines */
- if (lp->netdev->cprot) {
- printk(KERN_WARNING "isdn_net_header called with concap_proto!\n");
- len = 0;
- break;
- }
- break;
-#endif /* CONFIG_ISDN_X25 */
- }
- return len;
-}
-
-static int isdn_header_cache(const struct neighbour *neigh, struct hh_cache *hh,
- __be16 type)
-{
- const struct net_device *dev = neigh->dev;
- isdn_net_local *lp = netdev_priv(dev);
-
- if (lp->p_encap == ISDN_NET_ENCAP_ETHER)
- return eth_header_cache(neigh, hh, type);
- return -1;
-}
-
-static void isdn_header_cache_update(struct hh_cache *hh,
- const struct net_device *dev,
- const unsigned char *haddr)
-{
- isdn_net_local *lp = netdev_priv(dev);
- if (lp->p_encap == ISDN_NET_ENCAP_ETHER)
- eth_header_cache_update(hh, dev, haddr);
-}
-
-static const struct header_ops isdn_header_ops = {
- .create = isdn_net_header,
- .cache = isdn_header_cache,
- .cache_update = isdn_header_cache_update,
-};
-
-/*
- * Interface-setup. (just after registering a new interface)
- */
-static int
-isdn_net_init(struct net_device *ndev)
-{
- ushort max_hlhdr_len = 0;
- int drvidx;
-
- /*
- * up till binding we ask the protocol layer to reserve as much
- * as we might need for HL layer
- */
-
- for (drvidx = 0; drvidx < ISDN_MAX_DRIVERS; drvidx++)
- if (dev->drv[drvidx])
- if (max_hlhdr_len < dev->drv[drvidx]->interface->hl_hdrlen)
- max_hlhdr_len = dev->drv[drvidx]->interface->hl_hdrlen;
-
- ndev->hard_header_len = ETH_HLEN + max_hlhdr_len;
- return 0;
-}
-
-static void
-isdn_net_swapbind(int drvidx)
-{
- isdn_net_dev *p;
-
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: swapping ch of %d\n", drvidx);
-#endif
- p = dev->netdev;
- while (p) {
- if (p->local->pre_device == drvidx)
- switch (p->local->pre_channel) {
- case 0:
- p->local->pre_channel = 1;
- break;
- case 1:
- p->local->pre_channel = 0;
- break;
- }
- p = (isdn_net_dev *) p->next;
- }
-}
-
-static void
-isdn_net_swap_usage(int i1, int i2)
-{
- int u1 = dev->usage[i1] & ISDN_USAGE_EXCLUSIVE;
- int u2 = dev->usage[i2] & ISDN_USAGE_EXCLUSIVE;
-
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: usage of %d and %d\n", i1, i2);
-#endif
- dev->usage[i1] &= ~ISDN_USAGE_EXCLUSIVE;
- dev->usage[i1] |= u2;
- dev->usage[i2] &= ~ISDN_USAGE_EXCLUSIVE;
- dev->usage[i2] |= u1;
- isdn_info_update();
-}
-
-/*
- * An incoming call-request has arrived.
- * Search the interface-chain for an appropriate interface.
- * If found, connect the interface to the ISDN-channel and initiate
- * D- and B-Channel-setup. If secure-flag is set, accept only
- * configured phone-numbers. If callback-flag is set, initiate
- * callback-dialing.
- *
- * Return-Value: 0 = No appropriate interface for this call.
- * 1 = Call accepted
- * 2 = Reject call, wait cbdelay, then call back
- * 3 = Reject call
- * 4 = Wait cbdelay, then call back
- * 5 = No appropriate interface for this call,
- * would eventually match if CID was longer.
- */
-
-int
-isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
-{
- char *eaz;
- int si1;
- int si2;
- int ematch;
- int wret;
- int swapped;
- int sidx = 0;
- u_long flags;
- isdn_net_dev *p;
- isdn_net_phone *n;
- char nr[ISDN_MSNLEN];
- char *my_eaz;
-
- /* Search name in netdev-chain */
- if (!setup->phone[0]) {
- nr[0] = '0';
- nr[1] = '\0';
- printk(KERN_INFO "isdn_net: Incoming call without OAD, assuming '0'\n");
- } else
- strlcpy(nr, setup->phone, ISDN_MSNLEN);
- si1 = (int) setup->si1;
- si2 = (int) setup->si2;
- if (!setup->eazmsn[0]) {
- printk(KERN_WARNING "isdn_net: Incoming call without CPN, assuming '0'\n");
- eaz = "0";
- } else
- eaz = setup->eazmsn;
- if (dev->net_verbose > 1)
- printk(KERN_INFO "isdn_net: call from %s,%d,%d -> %s\n", nr, si1, si2, eaz);
- /* Accept DATA and VOICE calls at this stage
- * local eaz is checked later for allowed call types
- */
- if ((si1 != 7) && (si1 != 1)) {
- if (dev->net_verbose > 1)
- printk(KERN_INFO "isdn_net: Service-Indicator not 1 or 7, ignored\n");
- return 0;
- }
- n = (isdn_net_phone *) 0;
- p = dev->netdev;
- ematch = wret = swapped = 0;
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: di=%d ch=%d idx=%d usg=%d\n", di, ch, idx,
- dev->usage[idx]);
-#endif
- while (p) {
- int matchret;
- isdn_net_local *lp = p->local;
-
- /* If last check has triggered as binding-swap, revert it */
- switch (swapped) {
- case 2:
- isdn_net_swap_usage(idx, sidx);
- /* fall through */
- case 1:
- isdn_net_swapbind(di);
- break;
- }
- swapped = 0;
- /* check acceptable call types for DOV */
- my_eaz = isdn_map_eaz2msn(lp->msn, di);
- if (si1 == 1) { /* it's a DOV call, check if we allow it */
- if (*my_eaz == 'v' || *my_eaz == 'V' ||
- *my_eaz == 'b' || *my_eaz == 'B')
- my_eaz++; /* skip to allow a match */
- else
- my_eaz = NULL; /* force non match */
- } else { /* it's a DATA call, check if we allow it */
- if (*my_eaz == 'b' || *my_eaz == 'B')
- my_eaz++; /* skip to allow a match */
- }
- if (my_eaz)
- matchret = isdn_msncmp(eaz, my_eaz);
- else
- matchret = 1;
- if (!matchret)
- ematch = 1;
-
- /* Remember if more numbers eventually can match */
- if (matchret > wret)
- wret = matchret;
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: if='%s', l.msn=%s, l.flags=%d, l.dstate=%d\n",
- p->dev->name, lp->msn, lp->flags, lp->dialstate);
-#endif
- if ((!matchret) && /* EAZ is matching */
- (((!(lp->flags & ISDN_NET_CONNECTED)) && /* but not connected */
- (USG_NONE(dev->usage[idx]))) || /* and ch. unused or */
- ((((lp->dialstate == 4) || (lp->dialstate == 12)) && /* if dialing */
- (!(lp->flags & ISDN_NET_CALLBACK))) /* but no callback */
- )))
- {
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: match1, pdev=%d pch=%d\n",
- lp->pre_device, lp->pre_channel);
-#endif
- if (dev->usage[idx] & ISDN_USAGE_EXCLUSIVE) {
- if ((lp->pre_channel != ch) ||
- (lp->pre_device != di)) {
- /* Here we got a problem:
- * If using an ICN-Card, an incoming call is always signaled on
- * on the first channel of the card, if both channels are
- * down. However this channel may be bound exclusive. If the
- * second channel is free, this call should be accepted.
- * The solution is horribly but it runs, so what:
- * We exchange the exclusive bindings of the two channels, the
- * corresponding variables in the interface-structs.
- */
- if (ch == 0) {
- sidx = isdn_dc2minor(di, 1);
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: ch is 0\n");
-#endif
- if (USG_NONE(dev->usage[sidx])) {
- /* Second Channel is free, now see if it is bound
- * exclusive too. */
- if (dev->usage[sidx] & ISDN_USAGE_EXCLUSIVE) {
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: 2nd channel is down and bound\n");
-#endif
- /* Yes, swap bindings only, if the original
- * binding is bound to channel 1 of this driver */
- if ((lp->pre_device == di) &&
- (lp->pre_channel == 1)) {
- isdn_net_swapbind(di);
- swapped = 1;
- } else {
- /* ... else iterate next device */
- p = (isdn_net_dev *) p->next;
- continue;
- }
- } else {
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: 2nd channel is down and unbound\n");
-#endif
- /* No, swap always and swap excl-usage also */
- isdn_net_swap_usage(idx, sidx);
- isdn_net_swapbind(di);
- swapped = 2;
- }
- /* Now check for exclusive binding again */
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: final check\n");
-#endif
- if ((dev->usage[idx] & ISDN_USAGE_EXCLUSIVE) &&
- ((lp->pre_channel != ch) ||
- (lp->pre_device != di))) {
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: final check failed\n");
-#endif
- p = (isdn_net_dev *) p->next;
- continue;
- }
- }
- } else {
- /* We are already on the second channel, so nothing to do */
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: already on 2nd channel\n");
-#endif
- }
- }
- }
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: match2\n");
-#endif
- n = lp->phone[0];
- if (lp->flags & ISDN_NET_SECURE) {
- while (n) {
- if (!isdn_msncmp(nr, n->num))
- break;
- n = (isdn_net_phone *) n->next;
- }
- }
- if (n || (!(lp->flags & ISDN_NET_SECURE))) {
-#ifdef ISDN_DEBUG_NET_ICALL
- printk(KERN_DEBUG "n_fi: match3\n");
-#endif
- /* matching interface found */
-
- /*
- * Is the state STOPPED?
- * If so, no dialin is allowed,
- * so reject actively.
- * */
- if (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF) {
- printk(KERN_INFO "incoming call, interface %s `stopped' -> rejected\n",
- p->dev->name);
- return 3;
- }
- /*
- * Is the interface up?
- * If not, reject the call actively.
- */
- if (!isdn_net_device_started(p)) {
- printk(KERN_INFO "%s: incoming call, interface down -> rejected\n",
- p->dev->name);
- return 3;
- }
- /* Interface is up, now see if it's a slave. If so, see if
- * it's master and parent slave is online. If not, reject the call.
- */
- if (lp->master) {
- isdn_net_local *mlp = ISDN_MASTER_PRIV(lp);
- printk(KERN_DEBUG "ICALLslv: %s\n", p->dev->name);
- printk(KERN_DEBUG "master=%s\n", lp->master->name);
- if (mlp->flags & ISDN_NET_CONNECTED) {
- printk(KERN_DEBUG "master online\n");
- /* Master is online, find parent-slave (master if first slave) */
- while (mlp->slave) {
- if (ISDN_SLAVE_PRIV(mlp) == lp)
- break;
- mlp = ISDN_SLAVE_PRIV(mlp);
- }
- } else
- printk(KERN_DEBUG "master offline\n");
- /* Found parent, if it's offline iterate next device */
- printk(KERN_DEBUG "mlpf: %d\n", mlp->flags & ISDN_NET_CONNECTED);
- if (!(mlp->flags & ISDN_NET_CONNECTED)) {
- p = (isdn_net_dev *) p->next;
- continue;
- }
- }
- if (lp->flags & ISDN_NET_CALLBACK) {
- int chi;
- /*
- * Is the state MANUAL?
- * If so, no callback can be made,
- * so reject actively.
- * */
- if (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF) {
- printk(KERN_INFO "incoming call for callback, interface %s `off' -> rejected\n",
- p->dev->name);
- return 3;
- }
- printk(KERN_DEBUG "%s: call from %s -> %s, start callback\n",
- p->dev->name, nr, eaz);
- if (lp->phone[1]) {
- /* Grab a free ISDN-Channel */
- spin_lock_irqsave(&dev->lock, flags);
- if ((chi =
- isdn_get_free_channel(
- ISDN_USAGE_NET,
- lp->l2_proto,
- lp->l3_proto,
- lp->pre_device,
- lp->pre_channel,
- lp->msn)
- ) < 0) {
-
- printk(KERN_WARNING "isdn_net_find_icall: No channel for %s\n",
- p->dev->name);
- spin_unlock_irqrestore(&dev->lock, flags);
- return 0;
- }
- /* Setup dialstate. */
- lp->dtimer = 0;
- lp->dialstate = 11;
- /* Connect interface with channel */
- isdn_net_bind_channel(lp, chi);
-#ifdef CONFIG_ISDN_PPP
- if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
- if (isdn_ppp_bind(lp) < 0) {
- spin_unlock_irqrestore(&dev->lock, flags);
- isdn_net_unbind_channel(lp);
- return 0;
- }
-#endif
- spin_unlock_irqrestore(&dev->lock, flags);
- /* Initiate dialing by returning 2 or 4 */
- return (lp->flags & ISDN_NET_CBHUP) ? 2 : 4;
- } else
- printk(KERN_WARNING "isdn_net: %s: No phone number\n",
- p->dev->name);
- return 0;
- } else {
- printk(KERN_DEBUG "%s: call from %s -> %s accepted\n",
- p->dev->name, nr, eaz);
- /* if this interface is dialing, it does it probably on a different
- device, so free this device */
- if ((lp->dialstate == 4) || (lp->dialstate == 12)) {
-#ifdef CONFIG_ISDN_PPP
- if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
- isdn_ppp_free(lp);
-#endif
- isdn_net_lp_disconnected(lp);
- isdn_free_channel(lp->isdn_device, lp->isdn_channel,
- ISDN_USAGE_NET);
- }
- spin_lock_irqsave(&dev->lock, flags);
- dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE;
- dev->usage[idx] |= ISDN_USAGE_NET;
- strcpy(dev->num[idx], nr);
- isdn_info_update();
- dev->st_netdev[idx] = lp->netdev;
- lp->isdn_device = di;
- lp->isdn_channel = ch;
- lp->ppp_slot = -1;
- lp->flags |= ISDN_NET_CONNECTED;
- lp->dialstate = 7;
- lp->dtimer = 0;
- lp->outgoing = 0;
- lp->huptimer = 0;
- lp->hupflags |= ISDN_WAITCHARGE;
- lp->hupflags &= ~ISDN_HAVECHARGE;
-#ifdef CONFIG_ISDN_PPP
- if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) {
- if (isdn_ppp_bind(lp) < 0) {
- isdn_net_unbind_channel(lp);
- spin_unlock_irqrestore(&dev->lock, flags);
- return 0;
- }
- }
-#endif
- spin_unlock_irqrestore(&dev->lock, flags);
- return 1;
- }
- }
- }
- p = (isdn_net_dev *) p->next;
- }
- /* If none of configured EAZ/MSN matched and not verbose, be silent */
- if (!ematch || dev->net_verbose)
- printk(KERN_INFO "isdn_net: call from %s -> %d %s ignored\n", nr, di, eaz);
- return (wret == 2) ? 5 : 0;
-}
-
-/*
- * Search list of net-interfaces for an interface with given name.
- */
-isdn_net_dev *
-isdn_net_findif(char *name)
-{
- isdn_net_dev *p = dev->netdev;
-
- while (p) {
- if (!strcmp(p->dev->name, name))
- return p;
- p = (isdn_net_dev *) p->next;
- }
- return (isdn_net_dev *) NULL;
-}
-
-/*
- * Force a net-interface to dial out.
- * This is called from the userlevel-routine below or
- * from isdn_net_start_xmit().
- */
-static int
-isdn_net_force_dial_lp(isdn_net_local *lp)
-{
- if ((!(lp->flags & ISDN_NET_CONNECTED)) && !lp->dialstate) {
- int chi;
- if (lp->phone[1]) {
- ulong flags;
-
- /* Grab a free ISDN-Channel */
- spin_lock_irqsave(&dev->lock, flags);
- if ((chi = isdn_get_free_channel(
- ISDN_USAGE_NET,
- lp->l2_proto,
- lp->l3_proto,
- lp->pre_device,
- lp->pre_channel,
- lp->msn)) < 0) {
- printk(KERN_WARNING "isdn_net_force_dial: No channel for %s\n",
- lp->netdev->dev->name);
- spin_unlock_irqrestore(&dev->lock, flags);
- return -EAGAIN;
- }
- lp->dialstate = 1;
- /* Connect interface with channel */
- isdn_net_bind_channel(lp, chi);
-#ifdef CONFIG_ISDN_PPP
- if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
- if (isdn_ppp_bind(lp) < 0) {
- isdn_net_unbind_channel(lp);
- spin_unlock_irqrestore(&dev->lock, flags);
- return -EAGAIN;
- }
-#endif
- /* Initiate dialing */
- spin_unlock_irqrestore(&dev->lock, flags);
- isdn_net_dial();
- return 0;
- } else
- return -EINVAL;
- } else
- return -EBUSY;
-}
-
-/*
- * This is called from certain upper protocol layers (multilink ppp
- * and x25iface encapsulation module) that want to initiate dialing
- * themselves.
- */
-int
-isdn_net_dial_req(isdn_net_local *lp)
-{
- /* is there a better error code? */
- if (!(ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_AUTO)) return -EBUSY;
-
- return isdn_net_force_dial_lp(lp);
-}
-
-/*
- * Force a net-interface to dial out.
- * This is always called from within userspace (ISDN_IOCTL_NET_DIAL).
- */
-int
-isdn_net_force_dial(char *name)
-{
- isdn_net_dev *p = isdn_net_findif(name);
-
- if (!p)
- return -ENODEV;
- return (isdn_net_force_dial_lp(p->local));
-}
-
-/* The ISDN-specific entries in the device structure. */
-static const struct net_device_ops isdn_netdev_ops = {
- .ndo_init = isdn_net_init,
- .ndo_open = isdn_net_open,
- .ndo_stop = isdn_net_close,
- .ndo_do_ioctl = isdn_net_ioctl,
-
- .ndo_start_xmit = isdn_net_start_xmit,
- .ndo_get_stats = isdn_net_get_stats,
- .ndo_tx_timeout = isdn_net_tx_timeout,
-};
-
-/*
- * Helper for alloc_netdev()
- */
-static void _isdn_setup(struct net_device *dev)
-{
- isdn_net_local *lp = netdev_priv(dev);
-
- ether_setup(dev);
-
- /* Setup the generic properties */
- dev->flags = IFF_NOARP | IFF_POINTOPOINT;
-
- /* isdn prepends a header in the tx path, can't share skbs */
- dev->priv_flags &= ~IFF_TX_SKB_SHARING;
- dev->header_ops = NULL;
- dev->netdev_ops = &isdn_netdev_ops;
-
- /* for clients with MPPP maybe higher values better */
- dev->tx_queue_len = 30;
-
- lp->p_encap = ISDN_NET_ENCAP_RAWIP;
- lp->magic = ISDN_NET_MAGIC;
- lp->last = lp;
- lp->next = lp;
- lp->isdn_device = -1;
- lp->isdn_channel = -1;
- lp->pre_device = -1;
- lp->pre_channel = -1;
- lp->exclusive = -1;
- lp->ppp_slot = -1;
- lp->pppbind = -1;
- skb_queue_head_init(&lp->super_tx_queue);
- lp->l2_proto = ISDN_PROTO_L2_X75I;
- lp->l3_proto = ISDN_PROTO_L3_TRANS;
- lp->triggercps = 6000;
- lp->slavedelay = 10 * HZ;
- lp->hupflags = ISDN_INHUP; /* Do hangup even on incoming calls */
- lp->onhtime = 10; /* Default hangup-time for saving costs */
- lp->dialmax = 1;
- /* Hangup before Callback, manual dial */
- lp->flags = ISDN_NET_CBHUP | ISDN_NET_DM_MANUAL;
- lp->cbdelay = 25; /* Wait 5 secs before Callback */
- lp->dialtimeout = -1; /* Infinite Dial-Timeout */
- lp->dialwait = 5 * HZ; /* Wait 5 sec. after failed dial */
- lp->dialstarted = 0; /* Jiffies of last dial-start */
- lp->dialwait_timer = 0; /* Jiffies of earliest next dial-start */
-}
-
-/*
- * Allocate a new network-interface and initialize its data structures.
- */
-char *
-isdn_net_new(char *name, struct net_device *master)
-{
- isdn_net_dev *netdev;
-
- /* Avoid creating an existing interface */
- if (isdn_net_findif(name)) {
- printk(KERN_WARNING "isdn_net: interface %s already exists\n", name);
- return NULL;
- }
- if (name == NULL)
- return NULL;
- if (!(netdev = kzalloc(sizeof(isdn_net_dev), GFP_KERNEL))) {
- printk(KERN_WARNING "isdn_net: Could not allocate net-device\n");
- return NULL;
- }
- netdev->dev = alloc_netdev(sizeof(isdn_net_local), name,
- NET_NAME_UNKNOWN, _isdn_setup);
- if (!netdev->dev) {
- printk(KERN_WARNING "isdn_net: Could not allocate network device\n");
- kfree(netdev);
- return NULL;
- }
- netdev->local = netdev_priv(netdev->dev);
-
- if (master) {
- /* Device shall be a slave */
- struct net_device *p = MASTER_TO_SLAVE(master);
- struct net_device *q = master;
-
- netdev->local->master = master;
- /* Put device at end of slave-chain */
- while (p) {
- q = p;
- p = MASTER_TO_SLAVE(p);
- }
- MASTER_TO_SLAVE(q) = netdev->dev;
- } else {
- /* Device shall be a master */
- /*
- * Watchdog timer (currently) for master only.
- */
- netdev->dev->watchdog_timeo = ISDN_NET_TX_TIMEOUT;
- if (register_netdev(netdev->dev) != 0) {
- printk(KERN_WARNING "isdn_net: Could not register net-device\n");
- free_netdev(netdev->dev);
- kfree(netdev);
- return NULL;
- }
- }
- netdev->queue = netdev->local;
- spin_lock_init(&netdev->queue_lock);
-
- netdev->local->netdev = netdev;
-
- INIT_WORK(&netdev->local->tqueue, isdn_net_softint);
- spin_lock_init(&netdev->local->xmit_lock);
-
- /* Put into to netdev-chain */
- netdev->next = (void *) dev->netdev;
- dev->netdev = netdev;
- return netdev->dev->name;
-}
-
-char *
-isdn_net_newslave(char *parm)
-{
- char *p = strchr(parm, ',');
- isdn_net_dev *n;
- char newname[10];
-
- if (p) {
- /* Slave-Name MUST not be empty or overflow 'newname' */
- if (strscpy(newname, p + 1, sizeof(newname)) <= 0)
- return NULL;
- *p = 0;
- /* Master must already exist */
- if (!(n = isdn_net_findif(parm)))
- return NULL;
- /* Master must be a real interface, not a slave */
- if (n->local->master)
- return NULL;
- /* Master must not be started yet */
- if (isdn_net_device_started(n))
- return NULL;
- return (isdn_net_new(newname, n->dev));
- }
- return NULL;
-}
-
-/*
- * Set interface-parameters.
- * Always set all parameters, so the user-level application is responsible
- * for not overwriting existing setups. It has to get the current
- * setup first, if only selected parameters are to be changed.
- */
-int
-isdn_net_setcfg(isdn_net_ioctl_cfg *cfg)
-{
- isdn_net_dev *p = isdn_net_findif(cfg->name);
- ulong features;
- int i;
- int drvidx;
- int chidx;
- char drvid[25];
-
- if (p) {
- isdn_net_local *lp = p->local;
-
- /* See if any registered driver supports the features we want */
- features = ((1 << cfg->l2_proto) << ISDN_FEATURE_L2_SHIFT) |
- ((1 << cfg->l3_proto) << ISDN_FEATURE_L3_SHIFT);
- for (i = 0; i < ISDN_MAX_DRIVERS; i++)
- if (dev->drv[i])
- if ((dev->drv[i]->interface->features & features) == features)
- break;
- if (i == ISDN_MAX_DRIVERS) {
- printk(KERN_WARNING "isdn_net: No driver with selected features\n");
- return -ENODEV;
- }
- if (lp->p_encap != cfg->p_encap) {
-#ifdef CONFIG_ISDN_X25
- struct concap_proto *cprot = p->cprot;
-#endif
- if (isdn_net_device_started(p)) {
- printk(KERN_WARNING "%s: cannot change encap when if is up\n",
- p->dev->name);
- return -EBUSY;
- }
-#ifdef CONFIG_ISDN_X25
- if (cprot && cprot->pops)
- cprot->pops->proto_del(cprot);
- p->cprot = NULL;
- lp->dops = NULL;
- /* ... , prepare for configuration of new one ... */
- switch (cfg->p_encap) {
- case ISDN_NET_ENCAP_X25IFACE:
- lp->dops = &isdn_concap_reliable_dl_dops;
- }
- /* ... and allocate new one ... */
- p->cprot = isdn_concap_new(cfg->p_encap);
- /* p -> cprot == NULL now if p_encap is not supported
- by means of the concap_proto mechanism */
- /* the protocol is not configured yet; this will
- happen later when isdn_net_reset() is called */
-#endif
- }
- switch (cfg->p_encap) {
- case ISDN_NET_ENCAP_SYNCPPP:
-#ifndef CONFIG_ISDN_PPP
- printk(KERN_WARNING "%s: SyncPPP support not configured\n",
- p->dev->name);
- return -EINVAL;
-#else
- p->dev->type = ARPHRD_PPP; /* change ARP type */
- p->dev->addr_len = 0;
-#endif
- break;
- case ISDN_NET_ENCAP_X25IFACE:
-#ifndef CONFIG_ISDN_X25
- printk(KERN_WARNING "%s: isdn-x25 support not configured\n",
- p->dev->name);
- return -EINVAL;
-#else
- p->dev->type = ARPHRD_X25; /* change ARP type */
- p->dev->addr_len = 0;
-#endif
- break;
- case ISDN_NET_ENCAP_CISCOHDLCK:
- break;
- default:
- if (cfg->p_encap >= 0 &&
- cfg->p_encap <= ISDN_NET_ENCAP_MAX_ENCAP)
- break;
- printk(KERN_WARNING
- "%s: encapsulation protocol %d not supported\n",
- p->dev->name, cfg->p_encap);
- return -EINVAL;
- }
- if (strlen(cfg->drvid)) {
- /* A bind has been requested ... */
- char *c,
- *e;
-
- if (strnlen(cfg->drvid, sizeof(cfg->drvid)) ==
- sizeof(cfg->drvid))
- return -EINVAL;
- drvidx = -1;
- chidx = -1;
- strcpy(drvid, cfg->drvid);
- if ((c = strchr(drvid, ','))) {
- /* The channel-number is appended to the driver-Id with a comma */
- chidx = (int) simple_strtoul(c + 1, &e, 10);
- if (e == c)
- chidx = -1;
- *c = '\0';
- }
- for (i = 0; i < ISDN_MAX_DRIVERS; i++)
- /* Lookup driver-Id in array */
- if (!(strcmp(dev->drvid[i], drvid))) {
- drvidx = i;
- break;
- }
- if ((drvidx == -1) || (chidx == -1))
- /* Either driver-Id or channel-number invalid */
- return -ENODEV;
- } else {
- /* Parameters are valid, so get them */
- drvidx = lp->pre_device;
- chidx = lp->pre_channel;
- }
- if (cfg->exclusive > 0) {
- unsigned long flags;
-
- /* If binding is exclusive, try to grab the channel */
- spin_lock_irqsave(&dev->lock, flags);
- if ((i = isdn_get_free_channel(ISDN_USAGE_NET,
- lp->l2_proto, lp->l3_proto, drvidx,
- chidx, lp->msn)) < 0) {
- /* Grab failed, because desired channel is in use */
- lp->exclusive = -1;
- spin_unlock_irqrestore(&dev->lock, flags);
- return -EBUSY;
- }
- /* All went ok, so update isdninfo */
- dev->usage[i] = ISDN_USAGE_EXCLUSIVE;
- isdn_info_update();
- spin_unlock_irqrestore(&dev->lock, flags);
- lp->exclusive = i;
- } else {
- /* Non-exclusive binding or unbind. */
- lp->exclusive = -1;
- if ((lp->pre_device != -1) && (cfg->exclusive == -1)) {
- isdn_unexclusive_channel(lp->pre_device, lp->pre_channel);
- isdn_free_channel(lp->pre_device, lp->pre_channel, ISDN_USAGE_NET);
- drvidx = -1;
- chidx = -1;
- }
- }
- strlcpy(lp->msn, cfg->eaz, sizeof(lp->msn));
- lp->pre_device = drvidx;
- lp->pre_channel = chidx;
- lp->onhtime = cfg->onhtime;
- lp->charge = cfg->charge;
- lp->l2_proto = cfg->l2_proto;
- lp->l3_proto = cfg->l3_proto;
- lp->cbdelay = cfg->cbdelay;
- lp->dialmax = cfg->dialmax;
- lp->triggercps = cfg->triggercps;
- lp->slavedelay = cfg->slavedelay * HZ;
- lp->pppbind = cfg->pppbind;
- lp->dialtimeout = cfg->dialtimeout >= 0 ? cfg->dialtimeout * HZ : -1;
- lp->dialwait = cfg->dialwait * HZ;
- if (cfg->secure)
- lp->flags |= ISDN_NET_SECURE;
- else
- lp->flags &= ~ISDN_NET_SECURE;
- if (cfg->cbhup)
- lp->flags |= ISDN_NET_CBHUP;
- else
- lp->flags &= ~ISDN_NET_CBHUP;
- switch (cfg->callback) {
- case 0:
- lp->flags &= ~(ISDN_NET_CALLBACK | ISDN_NET_CBOUT);
- break;
- case 1:
- lp->flags |= ISDN_NET_CALLBACK;
- lp->flags &= ~ISDN_NET_CBOUT;
- break;
- case 2:
- lp->flags |= ISDN_NET_CBOUT;
- lp->flags &= ~ISDN_NET_CALLBACK;
- break;
- }
- lp->flags &= ~ISDN_NET_DIALMODE_MASK; /* first all bits off */
- if (cfg->dialmode && !(cfg->dialmode & ISDN_NET_DIALMODE_MASK)) {
- /* old isdnctrl version, where only 0 or 1 is given */
- printk(KERN_WARNING
- "Old isdnctrl version detected! Please update.\n");
- lp->flags |= ISDN_NET_DM_OFF; /* turn on `off' bit */
- }
- else {
- lp->flags |= cfg->dialmode; /* turn on selected bits */
- }
- if (cfg->chargehup)
- lp->hupflags |= ISDN_CHARGEHUP;
- else
- lp->hupflags &= ~ISDN_CHARGEHUP;
- if (cfg->ihup)
- lp->hupflags |= ISDN_INHUP;
- else
- lp->hupflags &= ~ISDN_INHUP;
- if (cfg->chargeint > 10) {
- lp->hupflags |= ISDN_CHARGEHUP | ISDN_HAVECHARGE | ISDN_MANCHARGE;
- lp->chargeint = cfg->chargeint * HZ;
- }
- if (cfg->p_encap != lp->p_encap) {
- if (cfg->p_encap == ISDN_NET_ENCAP_RAWIP) {
- p->dev->header_ops = NULL;
- p->dev->flags = IFF_NOARP | IFF_POINTOPOINT;
- } else {
- p->dev->header_ops = &isdn_header_ops;
- if (cfg->p_encap == ISDN_NET_ENCAP_ETHER)
- p->dev->flags = IFF_BROADCAST | IFF_MULTICAST;
- else
- p->dev->flags = IFF_NOARP | IFF_POINTOPOINT;
- }
- }
- lp->p_encap = cfg->p_encap;
- return 0;
- }
- return -ENODEV;
-}
-
-/*
- * Perform get-interface-parameters.ioctl
- */
-int
-isdn_net_getcfg(isdn_net_ioctl_cfg *cfg)
-{
- isdn_net_dev *p = isdn_net_findif(cfg->name);
-
- if (p) {
- isdn_net_local *lp = p->local;
-
- strcpy(cfg->eaz, lp->msn);
- cfg->exclusive = lp->exclusive;
- if (lp->pre_device >= 0) {
- sprintf(cfg->drvid, "%s,%d", dev->drvid[lp->pre_device],
- lp->pre_channel);
- } else
- cfg->drvid[0] = '\0';
- cfg->onhtime = lp->onhtime;
- cfg->charge = lp->charge;
- cfg->l2_proto = lp->l2_proto;
- cfg->l3_proto = lp->l3_proto;
- cfg->p_encap = lp->p_encap;
- cfg->secure = (lp->flags & ISDN_NET_SECURE) ? 1 : 0;
- cfg->callback = 0;
- if (lp->flags & ISDN_NET_CALLBACK)
- cfg->callback = 1;
- if (lp->flags & ISDN_NET_CBOUT)
- cfg->callback = 2;
- cfg->cbhup = (lp->flags & ISDN_NET_CBHUP) ? 1 : 0;
- cfg->dialmode = lp->flags & ISDN_NET_DIALMODE_MASK;
- cfg->chargehup = (lp->hupflags & ISDN_CHARGEHUP) ? 1 : 0;
- cfg->ihup = (lp->hupflags & ISDN_INHUP) ? 1 : 0;
- cfg->cbdelay = lp->cbdelay;
- cfg->dialmax = lp->dialmax;
- cfg->triggercps = lp->triggercps;
- cfg->slavedelay = lp->slavedelay / HZ;
- cfg->chargeint = (lp->hupflags & ISDN_CHARGEHUP) ?
- (lp->chargeint / HZ) : 0;
- cfg->pppbind = lp->pppbind;
- cfg->dialtimeout = lp->dialtimeout >= 0 ? lp->dialtimeout / HZ : -1;
- cfg->dialwait = lp->dialwait / HZ;
- if (lp->slave) {
- if (strlen(lp->slave->name) >= 10)
- strcpy(cfg->slave, "too-long");
- else
- strcpy(cfg->slave, lp->slave->name);
- } else
- cfg->slave[0] = '\0';
- if (lp->master) {
- if (strlen(lp->master->name) >= 10)
- strcpy(cfg->master, "too-long");
- else
- strcpy(cfg->master, lp->master->name);
- } else
- cfg->master[0] = '\0';
- return 0;
- }
- return -ENODEV;
-}
-
-/*
- * Add a phone-number to an interface.
- */
-int
-isdn_net_addphone(isdn_net_ioctl_phone *phone)
-{
- isdn_net_dev *p = isdn_net_findif(phone->name);
- isdn_net_phone *n;
-
- if (p) {
- if (!(n = kmalloc(sizeof(isdn_net_phone), GFP_KERNEL)))
- return -ENOMEM;
- strlcpy(n->num, phone->phone, sizeof(n->num));
- n->next = p->local->phone[phone->outgoing & 1];
- p->local->phone[phone->outgoing & 1] = n;
- return 0;
- }
- return -ENODEV;
-}
-
-/*
- * Copy a string of all phone-numbers of an interface to user space.
- * This might sleep and must be called with the isdn semaphore down.
- */
-int
-isdn_net_getphones(isdn_net_ioctl_phone *phone, char __user *phones)
-{
- isdn_net_dev *p = isdn_net_findif(phone->name);
- int inout = phone->outgoing & 1;
- int more = 0;
- int count = 0;
- isdn_net_phone *n;
-
- if (!p)
- return -ENODEV;
- inout &= 1;
- for (n = p->local->phone[inout]; n; n = n->next) {
- if (more) {
- put_user(' ', phones++);
- count++;
- }
- if (copy_to_user(phones, n->num, strlen(n->num) + 1)) {
- return -EFAULT;
- }
- phones += strlen(n->num);
- count += strlen(n->num);
- more = 1;
- }
- put_user(0, phones);
- count++;
- return count;
-}
-
-/*
- * Copy a string containing the peer's phone number of a connected interface
- * to user space.
- */
-int
-isdn_net_getpeer(isdn_net_ioctl_phone *phone, isdn_net_ioctl_phone __user *peer)
-{
- isdn_net_dev *p = isdn_net_findif(phone->name);
- int ch, dv, idx;
-
- if (!p)
- return -ENODEV;
- /*
- * Theoretical race: while this executes, the remote number might
- * become invalid (hang up) or change (new connection), resulting
- * in (partially) wrong number copied to user. This race
- * currently ignored.
- */
- ch = p->local->isdn_channel;
- dv = p->local->isdn_device;
- if (ch < 0 && dv < 0)
- return -ENOTCONN;
- idx = isdn_dc2minor(dv, ch);
- if (idx < 0)
- return -ENODEV;
- /* for pre-bound channels, we need this extra check */
- if (strncmp(dev->num[idx], "???", 3) == 0)
- return -ENOTCONN;
- strncpy(phone->phone, dev->num[idx], ISDN_MSNLEN);
- phone->outgoing = USG_OUTGOING(dev->usage[idx]);
- if (copy_to_user(peer, phone, sizeof(*peer)))
- return -EFAULT;
- return 0;
-}
-/*
- * Delete a phone-number from an interface.
- */
-int
-isdn_net_delphone(isdn_net_ioctl_phone *phone)
-{
- isdn_net_dev *p = isdn_net_findif(phone->name);
- int inout = phone->outgoing & 1;
- isdn_net_phone *n;
- isdn_net_phone *m;
-
- if (p) {
- n = p->local->phone[inout];
- m = NULL;
- while (n) {
- if (!strcmp(n->num, phone->phone)) {
- if (p->local->dial == n)
- p->local->dial = n->next;
- if (m)
- m->next = n->next;
- else
- p->local->phone[inout] = n->next;
- kfree(n);
- return 0;
- }
- m = n;
- n = (isdn_net_phone *) n->next;
- }
- return -EINVAL;
- }
- return -ENODEV;
-}
-
-/*
- * Delete all phone-numbers of an interface.
- */
-static int
-isdn_net_rmallphone(isdn_net_dev *p)
-{
- isdn_net_phone *n;
- isdn_net_phone *m;
- int i;
-
- for (i = 0; i < 2; i++) {
- n = p->local->phone[i];
- while (n) {
- m = n->next;
- kfree(n);
- n = m;
- }
- p->local->phone[i] = NULL;
- }
- p->local->dial = NULL;
- return 0;
-}
-
-/*
- * Force a hangup of a network-interface.
- */
-int
-isdn_net_force_hangup(char *name)
-{
- isdn_net_dev *p = isdn_net_findif(name);
- struct net_device *q;
-
- if (p) {
- if (p->local->isdn_device < 0)
- return 1;
- q = p->local->slave;
- /* If this interface has slaves, do a hangup for them also. */
- while (q) {
- isdn_net_hangup(q);
- q = MASTER_TO_SLAVE(q);
- }
- isdn_net_hangup(p->dev);
- return 0;
- }
- return -ENODEV;
-}
-
-/*
- * Helper-function for isdn_net_rm: Do the real work.
- */
-static int
-isdn_net_realrm(isdn_net_dev *p, isdn_net_dev *q)
-{
- u_long flags;
-
- if (isdn_net_device_started(p)) {
- return -EBUSY;
- }
-#ifdef CONFIG_ISDN_X25
- if (p->cprot && p->cprot->pops)
- p->cprot->pops->proto_del(p->cprot);
-#endif
- /* Free all phone-entries */
- isdn_net_rmallphone(p);
- /* If interface is bound exclusive, free channel-usage */
- if (p->local->exclusive != -1)
- isdn_unexclusive_channel(p->local->pre_device, p->local->pre_channel);
- if (p->local->master) {
- /* It's a slave-device, so update master's slave-pointer if necessary */
- if (((isdn_net_local *) ISDN_MASTER_PRIV(p->local))->slave ==
- p->dev)
- ((isdn_net_local *)ISDN_MASTER_PRIV(p->local))->slave =
- p->local->slave;
- } else {
- /* Unregister only if it's a master-device */
- unregister_netdev(p->dev);
- }
- /* Unlink device from chain */
- spin_lock_irqsave(&dev->lock, flags);
- if (q)
- q->next = p->next;
- else
- dev->netdev = p->next;
- if (p->local->slave) {
- /* If this interface has a slave, remove it also */
- char *slavename = p->local->slave->name;
- isdn_net_dev *n = dev->netdev;
- q = NULL;
- while (n) {
- if (!strcmp(n->dev->name, slavename)) {
- spin_unlock_irqrestore(&dev->lock, flags);
- isdn_net_realrm(n, q);
- spin_lock_irqsave(&dev->lock, flags);
- break;
- }
- q = n;
- n = (isdn_net_dev *)n->next;
- }
- }
- spin_unlock_irqrestore(&dev->lock, flags);
- /* If no more net-devices remain, disable auto-hangup timer */
- if (dev->netdev == NULL)
- isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 0);
- free_netdev(p->dev);
- kfree(p);
-
- return 0;
-}
-
-/*
- * Remove a single network-interface.
- */
-int
-isdn_net_rm(char *name)
-{
- u_long flags;
- isdn_net_dev *p;
- isdn_net_dev *q;
-
- /* Search name in netdev-chain */
- spin_lock_irqsave(&dev->lock, flags);
- p = dev->netdev;
- q = NULL;
- while (p) {
- if (!strcmp(p->dev->name, name)) {
- spin_unlock_irqrestore(&dev->lock, flags);
- return (isdn_net_realrm(p, q));
- }
- q = p;
- p = (isdn_net_dev *) p->next;
- }
- spin_unlock_irqrestore(&dev->lock, flags);
- /* If no more net-devices remain, disable auto-hangup timer */
- if (dev->netdev == NULL)
- isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 0);
- return -ENODEV;
-}
-
-/*
- * Remove all network-interfaces
- */
-int
-isdn_net_rmall(void)
-{
- u_long flags;
- int ret;
-
- /* Walk through netdev-chain */
- spin_lock_irqsave(&dev->lock, flags);
- while (dev->netdev) {
- if (!dev->netdev->local->master) {
- /* Remove master-devices only, slaves get removed with their master */
- spin_unlock_irqrestore(&dev->lock, flags);
- if ((ret = isdn_net_realrm(dev->netdev, NULL))) {
- return ret;
- }
- spin_lock_irqsave(&dev->lock, flags);
- }
- }
- dev->netdev = NULL;
- spin_unlock_irqrestore(&dev->lock, flags);
- return 0;
-}