/*
* State machine for state 1, Awaiting Connection State.
* The handling of the timer(s) is in file lapb_timer.c.
*/
void lapb_state1_machine(struct lapb_cs * lapb, struct lapb_frame * frame) {
struct lapb_cs_internal * lapb_int = lapb_get_internal(lapb);
switch (frame->type) {
case LAPB_SABM:
lapb->callbacks->debug(2, "[LAPB] S1 RX SABM(%d)", frame->pf);
if (lapb_is_extended(lapb)) {
/* Unrecognized mode */
lapb->callbacks->debug(2, "[LAPB] S1 TX DM(%d)", frame->pf);
lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE);
} else {
/* Collision state, send UA and switch to state_3 */
lapb->callbacks->debug(2, "[LAPB] S1 TX UA(%d)", frame->pf);
lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
lapb_stop_t201timer(lapb);
lapb_int->state = LAPB_STATE_3;
lapb_int->condition = 0x00;
lapb_int->vs = 0;
lapb_int->vr = 0;
lapb_int->va = 0;
lapb->callbacks->debug(1, "[LAPB] S1 -> S3");
lapb_connect_confirmation(lapb, LAPB_OK);
};
break;
case LAPB_SABME:
lapb->callbacks->debug(2, "[LAPB] S1 RX SABME(%d)", frame->pf);
if (lapb_is_extended(lapb)) {
/* Collision state, send UA and switch to state_3 */
lapb->callbacks->debug(2, "[LAPB] S1 TX UA(%d)", frame->pf);
lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
lapb_stop_t201timer(lapb);
lapb_int->state = LAPB_STATE_3;
lapb_int->condition = 0x00;
lapb_int->vs = 0;
lapb_int->vr = 0;
lapb_int->va = 0;
lapb->callbacks->debug(1, "[LAPB] S1 -> S3");
lapb_connect_confirmation(lapb, LAPB_OK);
} else {
/* Unrecognized mode */
lapb->callbacks->debug(2, "[LAPB] S1 TX DM(%d)", frame->pf);
lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE);
};
break;
// case LAPB_DISC:
// lapb->callbacks->debug(2, "[LAPB] S1 RX DISC(%d)", frame->pf);
// lapb->callbacks->debug(2, "[LAPB] S1 TX DM(%d)", frame->pf);
// lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE);
// lapb_requeue_frames(lapb);
// lapb_disconnect_indication(lapb, LAPB_REFUSED);
// lapb_reset(lapb, LAPB_STATE_0);
// break;
case LAPB_UA:
lapb->callbacks->debug(2, "[LAPB] S1 RX UA(%d)", frame->pf);
if (frame->pf) {
lapb_stop_t201timer(lapb);
lapb_int->state = LAPB_STATE_3;
lapb_int->condition = 0x00;
lapb_int->vs = 0;
lapb_int->vr = 0;
lapb_int->va = 0;
lapb->callbacks->debug(1, "[LAPB] S1 -> S3");
lapb_connect_confirmation(lapb, LAPB_OK);
};
break;
case LAPB_DM:
lapb->callbacks->debug(2, "[LAPB] S1 RX DM(%d)", frame->pf);
if (frame->pf) {
lapb_requeue_frames(lapb);
lapb_disconnect_indication(lapb, LAPB_REFUSED);
lapb_reset(lapb, LAPB_STATE_0);
};
break;
};
}
/*
* State machine for state 1, Awaiting Connection State.
* The handling of the timer(s) is in file lapb_timer.c.
*/
static void lapb_state1_machine(struct lapb_cb *lapb, struct sk_buff *skb,
struct lapb_frame *frame)
{
switch (frame->type) {
case LAPB_SABM:
lapb_dbg(1, "(%p) S1 RX SABM(%d)\n", lapb->dev, frame->pf);
if (lapb->mode & LAPB_EXTENDED) {
lapb_dbg(1, "(%p) S1 TX DM(%d)\n",
lapb->dev, frame->pf);
lapb_send_control(lapb, LAPB_DM, frame->pf,
LAPB_RESPONSE);
} else {
lapb_dbg(1, "(%p) S1 TX UA(%d)\n",
lapb->dev, frame->pf);
lapb_send_control(lapb, LAPB_UA, frame->pf,
LAPB_RESPONSE);
}
break;
case LAPB_SABME:
lapb_dbg(1, "(%p) S1 RX SABME(%d)\n", lapb->dev, frame->pf);
if (lapb->mode & LAPB_EXTENDED) {
lapb_dbg(1, "(%p) S1 TX UA(%d)\n",
lapb->dev, frame->pf);
lapb_send_control(lapb, LAPB_UA, frame->pf,
LAPB_RESPONSE);
} else {
lapb_dbg(1, "(%p) S1 TX DM(%d)\n",
lapb->dev, frame->pf);
lapb_send_control(lapb, LAPB_DM, frame->pf,
LAPB_RESPONSE);
}
break;
case LAPB_DISC:
lapb_dbg(1, "(%p) S1 RX DISC(%d)\n", lapb->dev, frame->pf);
lapb_dbg(1, "(%p) S1 TX DM(%d)\n", lapb->dev, frame->pf);
lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE);
break;
case LAPB_UA:
lapb_dbg(1, "(%p) S1 RX UA(%d)\n", lapb->dev, frame->pf);
if (frame->pf) {
lapb_dbg(0, "(%p) S1 -> S3\n", lapb->dev);
lapb_stop_t1timer(lapb);
lapb_stop_t2timer(lapb);
lapb->state = LAPB_STATE_3;
lapb->condition = 0x00;
lapb->n2count = 0;
lapb->vs = 0;
lapb->vr = 0;
lapb->va = 0;
lapb_connect_confirmation(lapb, LAPB_OK);
}
break;
case LAPB_DM:
lapb_dbg(1, "(%p) S1 RX DM(%d)\n", lapb->dev, frame->pf);
if (frame->pf) {
lapb_dbg(0, "(%p) S1 -> S0\n", lapb->dev);
lapb_clear_queues(lapb);
lapb->state = LAPB_STATE_0;
lapb_start_t1timer(lapb);
lapb_stop_t2timer(lapb);
lapb_disconnect_indication(lapb, LAPB_REFUSED);
}
break;
}
kfree_skb(skb);
}
/*
* State machine for state 1, Awaiting Connection State.
* The handling of the timer(s) is in file lapb_timer.c.
*/
static void lapb_state1_machine(lapb_cb *lapb, struct sk_buff *skb, struct lapb_frame *frame)
{
switch (frame->type) {
case LAPB_SABM:
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S1 RX SABM(%d)\n", lapb->token, frame->pf);
#endif
if (lapb->mode & LAPB_EXTENDED) {
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S1 TX DM(%d)\n", lapb->token, frame->pf);
#endif
lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE);
} else {
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S1 TX UA(%d)\n", lapb->token, frame->pf);
#endif
lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
}
break;
case LAPB_SABME:
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S1 RX SABME(%d)\n", lapb->token, frame->pf);
#endif
if (lapb->mode & LAPB_EXTENDED) {
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S1 TX UA(%d)\n", lapb->token, frame->pf);
#endif
lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
} else {
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S1 TX DM(%d)\n", lapb->token, frame->pf);
#endif
lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE);
}
break;
case LAPB_DISC:
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S1 RX DISC(%d)\n", lapb->token, frame->pf);
printk(KERN_DEBUG "lapb: (%p) S1 TX DM(%d)\n", lapb->token, frame->pf);
#endif
lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE);
break;
case LAPB_UA:
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S1 RX UA(%d)\n", lapb->token, frame->pf);
#endif
if (frame->pf) {
#if LAPB_DEBUG > 0
printk(KERN_DEBUG "lapb: (%p) S1 -> S3\n", lapb->token);
#endif
lapb_stop_t1timer(lapb);
lapb_stop_t2timer(lapb);
lapb->state = LAPB_STATE_3;
lapb->condition = 0x00;
lapb->n2count = 0;
lapb->vs = 0;
lapb->vr = 0;
lapb->va = 0;
lapb_connect_confirmation(lapb, LAPB_OK);
}
break;
case LAPB_DM:
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S1 RX DM(%d)\n", lapb->token, frame->pf);
#endif
if (frame->pf) {
#if LAPB_DEBUG > 0
printk(KERN_DEBUG "lapb: (%p) S1 -> S0\n", lapb->token);
#endif
lapb_clear_queues(lapb);
lapb->state = LAPB_STATE_0;
lapb_start_t1timer(lapb);
lapb_stop_t2timer(lapb);
lapb_disconnect_indication(lapb, LAPB_REFUSED);
}
break;
default:
break;
}
kfree_skb(skb);
}
