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path: root/net/lapb/lapb_in.c
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Diffstat (limited to 'net/lapb/lapb_in.c')
-rw-r--r--net/lapb/lapb_in.c974
1 files changed, 406 insertions, 568 deletions
diff --git a/net/lapb/lapb_in.c b/net/lapb/lapb_in.c
index 21904a002449..5dba899131b3 100644
--- a/net/lapb/lapb_in.c
+++ b/net/lapb/lapb_in.c
@@ -15,6 +15,8 @@
* 2000-10-29 Henner Eisen lapb_data_indication() return status.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
@@ -30,7 +32,6 @@
#include <linux/slab.h>
#include <net/sock.h>
#include <asm/uaccess.h>
-#include <asm/system.h>
#include <linux/fcntl.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
@@ -44,89 +45,64 @@ static void lapb_state0_machine(struct 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) S0 RX SABM(%d)\n",
- lapb->dev, frame->pf);
-#endif
- if (lapb->mode & LAPB_EXTENDED) {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S0 TX DM(%d)\n",
- lapb->dev, frame->pf);
-#endif
- lapb_send_control(lapb, LAPB_DM, frame->pf,
- LAPB_RESPONSE);
- } else {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S0 TX UA(%d)\n",
- lapb->dev, frame->pf);
-#endif
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S0 -> S3\n",
- lapb->dev);
-#endif
- lapb_send_control(lapb, LAPB_UA, frame->pf,
- LAPB_RESPONSE);
- 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_indication(lapb, LAPB_OK);
- }
- break;
-
- case LAPB_SABME:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S0 RX SABME(%d)\n",
- lapb->dev, frame->pf);
-#endif
- if (lapb->mode & LAPB_EXTENDED) {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S0 TX UA(%d)\n",
- lapb->dev, frame->pf);
-#endif
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S0 -> S3\n",
- lapb->dev);
-#endif
- lapb_send_control(lapb, LAPB_UA, frame->pf,
- LAPB_RESPONSE);
- 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_indication(lapb, LAPB_OK);
- } else {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S0 TX DM(%d)\n",
- lapb->dev, 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) S0 RX DISC(%d)\n",
- lapb->dev, frame->pf);
- printk(KERN_DEBUG "lapb: (%p) S0 TX UA(%d)\n",
- lapb->dev, frame->pf);
-#endif
+ case LAPB_SABM:
+ lapb_dbg(1, "(%p) S0 RX SABM(%d)\n", lapb->dev, frame->pf);
+ if (lapb->mode & LAPB_EXTENDED) {
+ lapb_dbg(1, "(%p) S0 TX DM(%d)\n",
+ lapb->dev, frame->pf);
+ lapb_send_control(lapb, LAPB_DM, frame->pf,
+ LAPB_RESPONSE);
+ } else {
+ lapb_dbg(1, "(%p) S0 TX UA(%d)\n",
+ lapb->dev, frame->pf);
+ lapb_dbg(0, "(%p) S0 -> S3\n", lapb->dev);
lapb_send_control(lapb, LAPB_UA, frame->pf,
LAPB_RESPONSE);
- break;
+ 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_indication(lapb, LAPB_OK);
+ }
+ break;
+
+ case LAPB_SABME:
+ lapb_dbg(1, "(%p) S0 RX SABME(%d)\n", lapb->dev, frame->pf);
+ if (lapb->mode & LAPB_EXTENDED) {
+ lapb_dbg(1, "(%p) S0 TX UA(%d)\n",
+ lapb->dev, frame->pf);
+ lapb_dbg(0, "(%p) S0 -> S3\n", lapb->dev);
+ lapb_send_control(lapb, LAPB_UA, frame->pf,
+ LAPB_RESPONSE);
+ 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_indication(lapb, LAPB_OK);
+ } else {
+ lapb_dbg(1, "(%p) S0 TX DM(%d)\n",
+ lapb->dev, frame->pf);
+ lapb_send_control(lapb, LAPB_DM, frame->pf,
+ LAPB_RESPONSE);
+ }
+ break;
- default:
- break;
+ case LAPB_DISC:
+ lapb_dbg(1, "(%p) S0 RX DISC(%d)\n", lapb->dev, frame->pf);
+ lapb_dbg(1, "(%p) S0 TX UA(%d)\n", lapb->dev, frame->pf);
+ lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
+ break;
+
+ default:
+ break;
}
kfree_skb(skb);
@@ -140,100 +116,69 @@ static void lapb_state1_machine(struct 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->dev, frame->pf);
-#endif
- if (lapb->mode & LAPB_EXTENDED) {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S1 TX DM(%d)\n",
- lapb->dev, 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->dev, 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->dev, frame->pf);
-#endif
- if (lapb->mode & LAPB_EXTENDED) {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S1 TX UA(%d)\n",
- lapb->dev, 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->dev, 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->dev, frame->pf);
- printk(KERN_DEBUG "lapb: (%p) S1 TX DM(%d)\n",
- lapb->dev, frame->pf);
-#endif
+ 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);
- break;
-
- case LAPB_UA:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S1 RX UA(%d)\n",
- lapb->dev, frame->pf);
-#endif
- if (frame->pf) {
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S1 -> S3\n",
- lapb->dev);
-#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->dev, frame->pf);
-#endif
- if (frame->pf) {
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S1 -> S0\n",
- lapb->dev);
-#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;
+ } 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);
@@ -247,78 +192,53 @@ static void lapb_state2_machine(struct lapb_cb *lapb, struct sk_buff *skb,
struct lapb_frame *frame)
{
switch (frame->type) {
- case LAPB_SABM:
- case LAPB_SABME:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S2 RX {SABM,SABME}(%d)\n",
- lapb->dev, frame->pf);
- printk(KERN_DEBUG "lapb: (%p) S2 TX DM(%d)\n",
- lapb->dev, frame->pf);
-#endif
+ case LAPB_SABM:
+ case LAPB_SABME:
+ lapb_dbg(1, "(%p) S2 RX {SABM,SABME}(%d)\n",
+ lapb->dev, frame->pf);
+ lapb_dbg(1, "(%p) S2 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) S2 RX DISC(%d)\n", lapb->dev, frame->pf);
+ lapb_dbg(1, "(%p) S2 TX UA(%d)\n", lapb->dev, frame->pf);
+ lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
+ break;
+
+ case LAPB_UA:
+ lapb_dbg(1, "(%p) S2 RX UA(%d)\n", lapb->dev, frame->pf);
+ if (frame->pf) {
+ lapb_dbg(0, "(%p) S2 -> S0\n", lapb->dev);
+ lapb->state = LAPB_STATE_0;
+ lapb_start_t1timer(lapb);
+ lapb_stop_t2timer(lapb);
+ lapb_disconnect_confirmation(lapb, LAPB_OK);
+ }
+ break;
+
+ case LAPB_DM:
+ lapb_dbg(1, "(%p) S2 RX DM(%d)\n", lapb->dev, frame->pf);
+ if (frame->pf) {
+ lapb_dbg(0, "(%p) S2 -> S0\n", lapb->dev);
+ lapb->state = LAPB_STATE_0;
+ lapb_start_t1timer(lapb);
+ lapb_stop_t2timer(lapb);
+ lapb_disconnect_confirmation(lapb, LAPB_NOTCONNECTED);
+ }
+ break;
+
+ case LAPB_I:
+ case LAPB_REJ:
+ case LAPB_RNR:
+ case LAPB_RR:
+ lapb_dbg(1, "(%p) S2 RX {I,REJ,RNR,RR}(%d)\n",
+ lapb->dev, frame->pf);
+ lapb_dbg(1, "(%p) S2 RX DM(%d)\n", lapb->dev, frame->pf);
+ if (frame->pf)
lapb_send_control(lapb, LAPB_DM, frame->pf,
LAPB_RESPONSE);
- break;
-
- case LAPB_DISC:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S2 RX DISC(%d)\n",
- lapb->dev, frame->pf);
- printk(KERN_DEBUG "lapb: (%p) S2 TX UA(%d)\n",
- lapb->dev, frame->pf);
-#endif
- lapb_send_control(lapb, LAPB_UA, frame->pf,
- LAPB_RESPONSE);
- break;
-
- case LAPB_UA:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S2 RX UA(%d)\n",
- lapb->dev, frame->pf);
-#endif
- if (frame->pf) {
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S2 -> S0\n",
- lapb->dev);
-#endif
- lapb->state = LAPB_STATE_0;
- lapb_start_t1timer(lapb);
- lapb_stop_t2timer(lapb);
- lapb_disconnect_confirmation(lapb, LAPB_OK);
- }
- break;
-
- case LAPB_DM:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S2 RX DM(%d)\n",
- lapb->dev, frame->pf);
-#endif
- if (frame->pf) {
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S2 -> S0\n",
- lapb->dev);
-#endif
- lapb->state = LAPB_STATE_0;
- lapb_start_t1timer(lapb);
- lapb_stop_t2timer(lapb);
- lapb_disconnect_confirmation(lapb,
- LAPB_NOTCONNECTED);
- }
- break;
-
- case LAPB_I:
- case LAPB_REJ:
- case LAPB_RNR:
- case LAPB_RR:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S2 RX {I,REJ,RNR,RR}"
- "(%d)\n", lapb->dev, frame->pf);
- printk(KERN_DEBUG "lapb: (%p) S2 RX DM(%d)\n",
- lapb->dev, frame->pf);
-#endif
- if (frame->pf)
- lapb_send_control(lapb, LAPB_DM, frame->pf,
- LAPB_RESPONSE);
- break;
+ break;
}
kfree_skb(skb);
@@ -336,277 +256,215 @@ static void lapb_state3_machine(struct lapb_cb *lapb, struct sk_buff *skb,
LAPB_SMODULUS;
switch (frame->type) {
- case LAPB_SABM:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 RX SABM(%d)\n",
- lapb->dev, frame->pf);
-#endif
- if (lapb->mode & LAPB_EXTENDED) {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 TX DM(%d)\n",
- lapb->dev, frame->pf);
-#endif
- lapb_send_control(lapb, LAPB_DM, frame->pf,
- LAPB_RESPONSE);
- } else {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 TX UA(%d)\n",
- lapb->dev, frame->pf);
-#endif
- lapb_send_control(lapb, LAPB_UA, frame->pf,
- LAPB_RESPONSE);
- lapb_stop_t1timer(lapb);
- lapb_stop_t2timer(lapb);
- lapb->condition = 0x00;
- lapb->n2count = 0;
- lapb->vs = 0;
- lapb->vr = 0;
- lapb->va = 0;
- lapb_requeue_frames(lapb);
- }
- break;
-
- case LAPB_SABME:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 RX SABME(%d)\n",
- lapb->dev, frame->pf);
-#endif
- if (lapb->mode & LAPB_EXTENDED) {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 TX UA(%d)\n",
- lapb->dev, frame->pf);
-#endif
- lapb_send_control(lapb, LAPB_UA, frame->pf,
- LAPB_RESPONSE);
- lapb_stop_t1timer(lapb);
- lapb_stop_t2timer(lapb);
- lapb->condition = 0x00;
- lapb->n2count = 0;
- lapb->vs = 0;
- lapb->vr = 0;
- lapb->va = 0;
- lapb_requeue_frames(lapb);
- } else {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 TX DM(%d)\n",
- lapb->dev, 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) S3 RX DISC(%d)\n",
- lapb->dev, frame->pf);
-#endif
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S3 -> S0\n",
- lapb->dev);
-#endif
- lapb_clear_queues(lapb);
+ case LAPB_SABM:
+ lapb_dbg(1, "(%p) S3 RX SABM(%d)\n", lapb->dev, frame->pf);
+ if (lapb->mode & LAPB_EXTENDED) {
+ lapb_dbg(1, "(%p) S3 TX DM(%d)\n",
+ lapb->dev, frame->pf);
+ lapb_send_control(lapb, LAPB_DM, frame->pf,
+ LAPB_RESPONSE);
+ } else {
+ lapb_dbg(1, "(%p) S3 TX UA(%d)\n",
+ lapb->dev, frame->pf);
+ lapb_send_control(lapb, LAPB_UA, frame->pf,
+ LAPB_RESPONSE);
+ lapb_stop_t1timer(lapb);
+ lapb_stop_t2timer(lapb);
+ lapb->condition = 0x00;
+ lapb->n2count = 0;
+ lapb->vs = 0;
+ lapb->vr = 0;
+ lapb->va = 0;
+ lapb_requeue_frames(lapb);
+ }
+ break;
+
+ case LAPB_SABME:
+ lapb_dbg(1, "(%p) S3 RX SABME(%d)\n", lapb->dev, frame->pf);
+ if (lapb->mode & LAPB_EXTENDED) {
+ lapb_dbg(1, "(%p) S3 TX UA(%d)\n",
+ lapb->dev, frame->pf);
lapb_send_control(lapb, LAPB_UA, frame->pf,
LAPB_RESPONSE);
+ lapb_stop_t1timer(lapb);
+ lapb_stop_t2timer(lapb);
+ lapb->condition = 0x00;
+ lapb->n2count = 0;
+ lapb->vs = 0;
+ lapb->vr = 0;
+ lapb->va = 0;
+ lapb_requeue_frames(lapb);
+ } else {
+ lapb_dbg(1, "(%p) S3 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) S3 RX DISC(%d)\n", lapb->dev, frame->pf);
+ lapb_dbg(0, "(%p) S3 -> S0\n", lapb->dev);
+ lapb_clear_queues(lapb);
+ lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
+ lapb_start_t1timer(lapb);
+ lapb_stop_t2timer(lapb);
+ lapb->state = LAPB_STATE_0;
+ lapb_disconnect_indication(lapb, LAPB_OK);
+ break;
+
+ case LAPB_DM:
+ lapb_dbg(1, "(%p) S3 RX DM(%d)\n", lapb->dev, frame->pf);
+ lapb_dbg(0, "(%p) S3 -> 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_NOTCONNECTED);
+ break;
+
+ case LAPB_RNR:
+ lapb_dbg(1, "(%p) S3 RX RNR(%d) R%d\n",
+ lapb->dev, frame->pf, frame->nr);
+ lapb->condition |= LAPB_PEER_RX_BUSY_CONDITION;
+ lapb_check_need_response(lapb, frame->cr, frame->pf);
+ if (lapb_validate_nr(lapb, frame->nr)) {
+ lapb_check_iframes_acked(lapb, frame->nr);
+ } else {
+ lapb->frmr_data = *frame;
+ lapb->frmr_type = LAPB_FRMR_Z;
+ lapb_transmit_frmr(lapb);
+ lapb_dbg(0, "(%p) S3 -> S4\n", lapb->dev);
lapb_start_t1timer(lapb);
lapb_stop_t2timer(lapb);
- lapb->state = LAPB_STATE_0;
- lapb_disconnect_indication(lapb, LAPB_OK);
- break;
-
- case LAPB_DM:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 RX DM(%d)\n",
- lapb->dev, frame->pf);
-#endif
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S3 -> S0\n",
- lapb->dev);
-#endif
- lapb_clear_queues(lapb);
- lapb->state = LAPB_STATE_0;
+ lapb->state = LAPB_STATE_4;
+ lapb->n2count = 0;
+ }
+ break;
+
+ case LAPB_RR:
+ lapb_dbg(1, "(%p) S3 RX RR(%d) R%d\n",
+ lapb->dev, frame->pf, frame->nr);
+ lapb->condition &= ~LAPB_PEER_RX_BUSY_CONDITION;
+ lapb_check_need_response(lapb, frame->cr, frame->pf);
+ if (lapb_validate_nr(lapb, frame->nr)) {
+ lapb_check_iframes_acked(lapb, frame->nr);
+ } else {
+ lapb->frmr_data = *frame;
+ lapb->frmr_type = LAPB_FRMR_Z;
+ lapb_transmit_frmr(lapb);
+ lapb_dbg(0, "(%p) S3 -> S4\n", lapb->dev);
lapb_start_t1timer(lapb);
lapb_stop_t2timer(lapb);
- lapb_disconnect_indication(lapb, LAPB_NOTCONNECTED);
- break;
-
- case LAPB_RNR:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 RX RNR(%d) R%d\n",
- lapb->dev, frame->pf, frame->nr);
-#endif
- lapb->condition |= LAPB_PEER_RX_BUSY_CONDITION;
- lapb_check_need_response(lapb, frame->cr, frame->pf);
- if (lapb_validate_nr(lapb, frame->nr)) {
- lapb_check_iframes_acked(lapb, frame->nr);
- } else {
- lapb->frmr_data = *frame;
- lapb->frmr_type = LAPB_FRMR_Z;
- lapb_transmit_frmr(lapb);
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S3 -> S4\n",
- lapb->dev);
-#endif
- lapb_start_t1timer(lapb);
- lapb_stop_t2timer(lapb);
- lapb->state = LAPB_STATE_4;
- lapb->n2count = 0;
- }
- break;
-
- case LAPB_RR:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 RX RR(%d) R%d\n",
- lapb->dev, frame->pf, frame->nr);
-#endif
- lapb->condition &= ~LAPB_PEER_RX_BUSY_CONDITION;
- lapb_check_need_response(lapb, frame->cr, frame->pf);
- if (lapb_validate_nr(lapb, frame->nr)) {
- lapb_check_iframes_acked(lapb, frame->nr);
- } else {
- lapb->frmr_data = *frame;
- lapb->frmr_type = LAPB_FRMR_Z;
- lapb_transmit_frmr(lapb);
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S3 -> S4\n",
- lapb->dev);
-#endif
- lapb_start_t1timer(lapb);
- lapb_stop_t2timer(lapb);
- lapb->state = LAPB_STATE_4;
- lapb->n2count = 0;
- }
- break;
-
- case LAPB_REJ:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 RX REJ(%d) R%d\n",
- lapb->dev, frame->pf, frame->nr);
-#endif
- lapb->condition &= ~LAPB_PEER_RX_BUSY_CONDITION;
- lapb_check_need_response(lapb, frame->cr, frame->pf);
- if (lapb_validate_nr(lapb, frame->nr)) {
- lapb_frames_acked(lapb, frame->nr);
- lapb_stop_t1timer(lapb);
- lapb->n2count = 0;
- lapb_requeue_frames(lapb);
- } else {
- lapb->frmr_data = *frame;
- lapb->frmr_type = LAPB_FRMR_Z;
- lapb_transmit_frmr(lapb);
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S3 -> S4\n",
- lapb->dev);
-#endif
- lapb_start_t1timer(lapb);
- lapb_stop_t2timer(lapb);
- lapb->state = LAPB_STATE_4;
- lapb->n2count = 0;
- }
- break;
-
- case LAPB_I:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 RX I(%d) S%d R%d\n",
- lapb->dev, frame->pf, frame->ns, frame->nr);
-#endif
- if (!lapb_validate_nr(lapb, frame->nr)) {
- lapb->frmr_data = *frame;
- lapb->frmr_type = LAPB_FRMR_Z;
- lapb_transmit_frmr(lapb);
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S3 -> S4\n",
- lapb->dev);
-#endif
- lapb_start_t1timer(lapb);
- lapb_stop_t2timer(lapb);
- lapb->state = LAPB_STATE_4;
- lapb->n2count = 0;
- break;
- }
- if (lapb->condition & LAPB_PEER_RX_BUSY_CONDITION)
- lapb_frames_acked(lapb, frame->nr);
- else
- lapb_check_iframes_acked(lapb, frame->nr);
-
- if (frame->ns == lapb->vr) {
- int cn;
- cn = lapb_data_indication(lapb, skb);
- queued = 1;
- /*
- * If upper layer has dropped the frame, we
- * basically ignore any further protocol
- * processing. This will cause the peer
- * to re-transmit the frame later like
- * a frame lost on the wire.
- */
- if (cn == NET_RX_DROP) {
- printk(KERN_DEBUG
- "LAPB: rx congestion\n");
- break;
- }
- lapb->vr = (lapb->vr + 1) % modulus;
- lapb->condition &= ~LAPB_REJECT_CONDITION;
- if (frame->pf)
- lapb_enquiry_response(lapb);
- else {
- if (!(lapb->condition &
- LAPB_ACK_PENDING_CONDITION)) {
- lapb->condition |= LAPB_ACK_PENDING_CONDITION;
- lapb_start_t2timer(lapb);
- }
- }
- } else {
- if (lapb->condition & LAPB_REJECT_CONDITION) {
- if (frame->pf)
- lapb_enquiry_response(lapb);
- } else {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG
- "lapb: (%p) S3 TX REJ(%d) R%d\n",
- lapb->dev, frame->pf, lapb->vr);
-#endif
- lapb->condition |= LAPB_REJECT_CONDITION;
- lapb_send_control(lapb, LAPB_REJ,
- frame->pf,
- LAPB_RESPONSE);
- lapb->condition &= ~LAPB_ACK_PENDING_CONDITION;
- }
- }
- break;
-
- case LAPB_FRMR:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 RX FRMR(%d) %02X "
- "%02X %02X %02X %02X\n", lapb->dev, frame->pf,
- skb->data[0], skb->data[1], skb->data[2],
- skb->data[3], skb->data[4]);
-#endif
- lapb_establish_data_link(lapb);
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S3 -> S1\n",
- lapb->dev);
-#endif
+ lapb->state = LAPB_STATE_4;
+ lapb->n2count = 0;
+ }
+ break;
+
+ case LAPB_REJ:
+ lapb_dbg(1, "(%p) S3 RX REJ(%d) R%d\n",
+ lapb->dev, frame->pf, frame->nr);
+ lapb->condition &= ~LAPB_PEER_RX_BUSY_CONDITION;
+ lapb_check_need_response(lapb, frame->cr, frame->pf);
+ if (lapb_validate_nr(lapb, frame->nr)) {
+ lapb_frames_acked(lapb, frame->nr);
+ lapb_stop_t1timer(lapb);
+ lapb->n2count = 0;
lapb_requeue_frames(lapb);
- lapb->state = LAPB_STATE_1;
- break;
+ } else {
+ lapb->frmr_data = *frame;
+ lapb->frmr_type = LAPB_FRMR_Z;
+ lapb_transmit_frmr(lapb);
+ lapb_dbg(0, "(%p) S3 -> S4\n", lapb->dev);
+ lapb_start_t1timer(lapb);
+ lapb_stop_t2timer(lapb);
+ lapb->state = LAPB_STATE_4;
+ lapb->n2count = 0;
+ }
+ break;
- case LAPB_ILLEGAL:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S3 RX ILLEGAL(%d)\n",
- lapb->dev, frame->pf);
-#endif
+ case LAPB_I:
+ lapb_dbg(1, "(%p) S3 RX I(%d) S%d R%d\n",
+ lapb->dev, frame->pf, frame->ns, frame->nr);
+ if (!lapb_validate_nr(lapb, frame->nr)) {
lapb->frmr_data = *frame;
- lapb->frmr_type = LAPB_FRMR_W;
+ lapb->frmr_type = LAPB_FRMR_Z;
lapb_transmit_frmr(lapb);
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S3 -> S4\n", lapb->dev);
-#endif
+ lapb_dbg(0, "(%p) S3 -> S4\n", lapb->dev);
lapb_start_t1timer(lapb);
lapb_stop_t2timer(lapb);
lapb->state = LAPB_STATE_4;
lapb->n2count = 0;
break;
+ }
+ if (lapb->condition & LAPB_PEER_RX_BUSY_CONDITION)
+ lapb_frames_acked(lapb, frame->nr);
+ else
+ lapb_check_iframes_acked(lapb, frame->nr);
+
+ if (frame->ns == lapb->vr) {
+ int cn;
+ cn = lapb_data_indication(lapb, skb);
+ queued = 1;
+ /*
+ * If upper layer has dropped the frame, we
+ * basically ignore any further protocol
+ * processing. This will cause the peer
+ * to re-transmit the frame later like
+ * a frame lost on the wire.
+ */
+ if (cn == NET_RX_DROP) {
+ pr_debug("rx congestion\n");
+ break;
+ }
+ lapb->vr = (lapb->vr + 1) % modulus;
+ lapb->condition &= ~LAPB_REJECT_CONDITION;
+ if (frame->pf)
+ lapb_enquiry_response(lapb);
+ else {
+ if (!(lapb->condition &
+ LAPB_ACK_PENDING_CONDITION)) {
+ lapb->condition |= LAPB_ACK_PENDING_CONDITION;
+ lapb_start_t2timer(lapb);
+ }
+ }
+ } else {
+ if (lapb->condition & LAPB_REJECT_CONDITION) {
+ if (frame->pf)
+ lapb_enquiry_response(lapb);
+ } else {
+ lapb_dbg(1, "(%p) S3 TX REJ(%d) R%d\n",
+ lapb->dev, frame->pf, lapb->vr);
+ lapb->condition |= LAPB_REJECT_CONDITION;
+ lapb_send_control(lapb, LAPB_REJ, frame->pf,
+ LAPB_RESPONSE);
+ lapb->condition &= ~LAPB_ACK_PENDING_CONDITION;
+ }
+ }
+ break;
+
+ case LAPB_FRMR:
+ lapb_dbg(1, "(%p) S3 RX FRMR(%d) %02X %02X %02X %02X %02X\n",
+ lapb->dev, frame->pf,
+ skb->data[0], skb->data[1], skb->data[2],
+ skb->data[3], skb->data[4]);
+ lapb_establish_data_link(lapb);
+ lapb_dbg(0, "(%p) S3 -> S1\n", lapb->dev);
+ lapb_requeue_frames(lapb);
+ lapb->state = LAPB_STATE_1;
+ break;
+
+ case LAPB_ILLEGAL:
+ lapb_dbg(1, "(%p) S3 RX ILLEGAL(%d)\n", lapb->dev, frame->pf);
+ lapb->frmr_data = *frame;
+ lapb->frmr_type = LAPB_FRMR_W;
+ lapb_transmit_frmr(lapb);
+ lapb_dbg(0, "(%p) S3 -> S4\n", lapb->dev);
+ lapb_start_t1timer(lapb);
+ lapb_stop_t2timer(lapb);
+ lapb->state = LAPB_STATE_4;
+ lapb->n2count = 0;
+ break;
}
if (!queued)
@@ -621,75 +479,55 @@ static void lapb_state4_machine(struct 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) S4 RX SABM(%d)\n",
- lapb->dev, frame->pf);
-#endif
- if (lapb->mode & LAPB_EXTENDED) {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S4 TX DM(%d)\n",
- lapb->dev, frame->pf);
-#endif
- lapb_send_control(lapb, LAPB_DM, frame->pf,
- LAPB_RESPONSE);
- } else {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S4 TX UA(%d)\n",
- lapb->dev, frame->pf);
-#endif
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S4 -> S3\n",
- lapb->dev);
-#endif
- lapb_send_control(lapb, LAPB_UA, frame->pf,
- LAPB_RESPONSE);
- 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_indication(lapb, LAPB_OK);
- }
- break;
-
- case LAPB_SABME:
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S4 RX SABME(%d)\n",
- lapb->dev, frame->pf);
-#endif
- if (lapb->mode & LAPB_EXTENDED) {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S4 TX UA(%d)\n",
- lapb->dev, frame->pf);
-#endif
-#if LAPB_DEBUG > 0
- printk(KERN_DEBUG "lapb: (%p) S4 -> S3\n",
- lapb->dev);
-#endif
- lapb_send_control(lapb, LAPB_UA, frame->pf,
- LAPB_RESPONSE);
- 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_indication(lapb, LAPB_OK);
- } else {
-#if LAPB_DEBUG > 1
- printk(KERN_DEBUG "lapb: (%p) S4 TX DM(%d)\n",
- lapb->dev, frame->pf);
-#endif
- lapb_send_control(lapb, LAPB_DM, frame->pf,
- LAPB_RESPONSE);
- }
- break;
+ case LAPB_SABM:
+ lapb_dbg(1, "(%p) S4 RX SABM(%d)\n", lapb->dev, frame->pf);
+ if (lapb->mode & LAPB_EXTENDED) {
+ lapb_dbg(1, "(%p) S4 TX DM(%d)\n",
+ lapb->dev, frame->pf);
+ lapb_send_control(lapb, LAPB_DM, frame->pf,
+ LAPB_RESPONSE);
+ } else {
+ lapb_dbg(1, "(%p) S4 TX UA(%d)\n",
+ lapb->dev, frame->pf);
+ lapb_dbg(0, "(%p) S4 -> S3\n", lapb->dev);
+ lapb_send_control(lapb, LAPB_UA, frame->pf,
+ LAPB_RESPONSE);
+ 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_indication(lapb, LAPB_OK);
+ }
+ break;
+
+ case LAPB_SABME:
+ lapb_dbg(1, "(%p) S4 RX SABME(%d)\n", lapb->dev, frame->pf);
+ if (lapb->mode & LAPB_EXTENDED) {
+ lapb_dbg(1, "(%p) S4 TX UA(%d)\n",
+ lapb->dev, frame->pf);
+ lapb_dbg(0, "(%p) S4 -> S3\n", lapb->dev);
+ lapb_send_control(lapb, LAPB_UA, frame->pf,
+ LAPB_RESPONSE);
+ 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_indication(lapb, LAPB_OK);
+ } else {
+ lapb_dbg(1, "(%p) S4 TX DM(%d)\n",
+ lapb->dev, frame->pf);
+ lapb_send_control(lapb, LAPB_DM, frame->pf,
+ LAPB_RESPONSE);
+ }
+ break;
}
kfree_skb(skb);
generated by cgit (git 2.34.1) at 2025-08-10 21:08:57 +0000