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Commit ff213a05 authored by Kai Germaschewski's avatar Kai Germaschewski
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ISDN: Unify isdn_net state machine 

Now it's a rather big nested switch statement, but at least it's all
in one place now.
parent f0a4e3a9
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Inline Side-by-side
Showing with 126 additions and 158 deletions
drivers/isdn/i4l/isdn_net.c
View file @ ff213a05
......@@ -203,6 +203,8 @@ static int 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);
static int isdn_net_handle_event(isdn_net_local *lp, int pr, void *arg);
char *isdn_net_revision = "$Revision: 1.140.6.11 $";
/*
......@@ -468,169 +470,14 @@ isdn_net_stat_callback(int idx, isdn_ctrl *c)
{
isdn_net_dev *p = isdn_slot_st_netdev(idx);
isdn_net_local *lp;
#ifdef CONFIG_ISDN_X25
struct concap_proto *cprot;
struct concap_proto_ops *pops;
#endif
int cmd = c->command;
if (!p)
return 0;
lp = p->local;
#ifdef CONFIG_ISDN_X25
cprot = lp -> netdev -> cprot;
pops = cprot ? cprot -> pops : 0;
#endif
switch (lp->dialstate) {
case ST_0:
switch (cmd) {
case ISDN_STAT_BSENT:
/* A packet has successfully been sent out */
if (lp->flags & ISDN_NET_CONNECTED) {
isdn_net_dec_frame_cnt(lp);
lp->stats.tx_packets++;
lp->stats.tx_bytes += c->parm.length;
return 1;
}
break;
case ISDN_STAT_DHUP:
/* Either D-Channel-hangup or error during dialout */
#ifdef CONFIG_ISDN_X25 // FIXME handle != ST_0?
/* 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->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_slot_all_eaz(lp->isdn_slot);
printk(KERN_INFO "%s: remote hangup\n", lp->name);
printk(KERN_INFO "%s: Chargesum is %d\n", lp->name,
lp->charge);
isdn_net_unbind_channel(lp);
return 1;
}
break;
#ifdef CONFIG_ISDN_X25 // FIXME handle != ST_0?
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_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",
lp->name, lp->chargetime);
return 1;
}
break;
case ST_4:
switch (cmd) {
case ISDN_STAT_NODCH:
/* No D-Channel avail. */
lp->dialstate = ST_3;
return 1;
case ISDN_STAT_DCONN:
lp->dialstate = ST_5;
return 1;
}
break;
case ST_5:
switch (cmd) {
case ISDN_STAT_BCONN:
isdn_slot_set_usage(idx, isdn_slot_usage(idx) | ISDN_USAGE_OUTGOING);
isdn_net_connected(lp);
return 1;
}
break;
case ST_6:
switch (cmd) {
case ISDN_STAT_BCONN:
isdn_slot_set_usage(idx, isdn_slot_usage(idx) | ISDN_USAGE_OUTGOING);
isdn_net_connected(lp);
return 1;
}
break;
case ST_7:
switch (cmd) {
case ISDN_STAT_DCONN:
lp->dialstate = ST_8;
return 1;
case ISDN_STAT_BCONN:
isdn_slot_set_rx_netdev(idx, p);
isdn_net_connected(lp);
return 1;
}
break;
case ST_8:
switch (cmd) {
case ISDN_STAT_DCONN:
lp->dialstate = ST_9;
return 1;
case ISDN_STAT_BCONN:
isdn_slot_set_rx_netdev(idx, p);
isdn_net_connected(lp);
return 1;
}
break;
case ST_9:
switch (cmd) {
case ISDN_STAT_BCONN:
isdn_slot_set_rx_netdev(idx, p);
isdn_net_connected(lp);
return 1;
}
break;
case ST_10:
switch (cmd) {
case ISDN_STAT_BCONN:
isdn_slot_set_rx_netdev(idx, p);
isdn_net_connected(lp);
return 1;
}
break;
case ST_12:
switch (cmd) {
case ISDN_STAT_DCONN:
lp->dialstate = ST_5;
return 1;
case ISDN_STAT_BCONN:
isdn_slot_set_rx_netdev(idx, p);
isdn_net_connected(lp);
return 1;
}
break;
}
return 0;
return isdn_net_handle_event(lp, cmd, c);
}
/* Initiate dialout. Set phone-number-pointer to first number
......@@ -751,17 +598,91 @@ do_dialout(isdn_net_local *lp)
return 1;
}
/* returns 1 if timer callback is needed */
/* For EV_NET_DIAL, returns 1 if timer callback is needed
* For ISDN_STAT_*, returns 1 if event was for us
*/
static int
isdn_net_handle_event(isdn_net_local *lp, int pr, void *arg)
{
#ifdef CONFIG_ISDN_X25
struct concap_proto *cprot = lp -> netdev -> cprot;
struct concap_proto_ops *pops = cprot ? cprot -> pops : 0;
#endif
isdn_net_dev *p = lp->netdev;
isdn_ctrl *c = arg;
isdn_ctrl cmd;
dbg_net_dial("%s: dialstate=%d\n", lp->name, lp->dialstate);
switch (lp->dialstate) {
case ST_0:
switch (pr) {
case ISDN_STAT_BSENT:
/* A packet has successfully been sent out */
if (lp->flags & ISDN_NET_CONNECTED) {
isdn_net_dec_frame_cnt(lp);
lp->stats.tx_packets++;
lp->stats.tx_bytes += c->parm.length;
return 1;
}
break;
case ISDN_STAT_DHUP:
/* Either D-Channel-hangup or error during dialout */
#ifdef CONFIG_ISDN_X25 // FIXME handle != ST_0?
/* 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->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_slot_all_eaz(lp->isdn_slot);
printk(KERN_INFO "%s: remote hangup\n", lp->name);
printk(KERN_INFO "%s: Chargesum is %d\n", lp->name,
lp->charge);
isdn_net_unbind_channel(lp);
return 1;
}
break;
#ifdef CONFIG_ISDN_X25 // FIXME handle != ST_0?
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_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",
lp->name, lp->chargetime);
return 1;
}
break;
case ST_1:
switch (pr) {
......@@ -798,6 +719,13 @@ isdn_net_handle_event(isdn_net_local *lp, int pr, void *arg)
if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10)
lp->dialstate = ST_3;
return 1;
case ISDN_STAT_NODCH:
/* No D-Channel avail. */
lp->dialstate = ST_3;
return 1;
case ISDN_STAT_DCONN:
lp->dialstate = ST_5;
return 1;
}
break;
case ST_5:
......@@ -808,6 +736,10 @@ isdn_net_handle_event(isdn_net_local *lp, int pr, void *arg)
lp->dialstate = ST_6;
isdn_slot_command(lp->isdn_slot, ISDN_CMD_ACCEPTB, &cmd);
return 1;
case ISDN_STAT_BCONN:
isdn_slot_set_usage(lp->isdn_slot, isdn_slot_usage(lp->isdn_slot) | ISDN_USAGE_OUTGOING);
isdn_net_connected(lp);
return 1;
}
break;
case ST_6:
......@@ -820,6 +752,10 @@ isdn_net_handle_event(isdn_net_local *lp, int pr, void *arg)
if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10)
lp->dialstate = ST_3;
return 1;
case ISDN_STAT_BCONN:
isdn_slot_set_usage(lp->isdn_slot, isdn_slot_usage(lp->isdn_slot) | ISDN_USAGE_OUTGOING);
isdn_net_connected(lp);
return 1;
}
break;
case ST_7:
......@@ -840,6 +776,24 @@ isdn_net_handle_event(isdn_net_local *lp, int pr, void *arg)
return 1;
}
break;
case ISDN_STAT_DCONN:
lp->dialstate = ST_8;
return 1;
case ISDN_STAT_BCONN:
isdn_slot_set_rx_netdev(lp->isdn_slot, p);
isdn_net_connected(lp);
return 1;
}
break;
case ST_8:
switch (pr) {
case ISDN_STAT_DCONN:
lp->dialstate = ST_9;
return 1;
case ISDN_STAT_BCONN:
isdn_slot_set_rx_netdev(lp->isdn_slot, p);
isdn_net_connected(lp);
return 1;
}
break;
case ST_9:
......@@ -850,9 +804,12 @@ isdn_net_handle_event(isdn_net_local *lp, int pr, void *arg)
lp->dtimer = 0;
lp->dialstate = ST_10;
return 1;
case ISDN_STAT_BCONN:
isdn_slot_set_rx_netdev(lp->isdn_slot, p);
isdn_net_connected(lp);
return 1;
}
break;
case ST_8:
case ST_10:
switch (pr) {
case EV_NET_DIAL:
......@@ -863,6 +820,10 @@ isdn_net_handle_event(isdn_net_local *lp, int pr, void *arg)
else
return 1;
break;
case ISDN_STAT_BCONN:
isdn_slot_set_rx_netdev(lp->isdn_slot, p);
isdn_net_connected(lp);
return 1;
}
break;
case ST_11:
......@@ -888,6 +849,13 @@ isdn_net_handle_event(isdn_net_local *lp, int pr, void *arg)
isdn_slot_all_eaz(lp->isdn_slot);
}
return 1;
case ISDN_STAT_DCONN:
lp->dialstate = ST_5;
return 1;
case ISDN_STAT_BCONN:
isdn_slot_set_rx_netdev(lp->isdn_slot, p);
isdn_net_connected(lp);
return 1;
}
break;
default:
......
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