diff options
Diffstat (limited to 'net/lapb/lapb_in.c')
| -rw-r--r-- | net/lapb/lapb_in.c | 881 |
1 files changed, 429 insertions, 452 deletions
diff --git a/net/lapb/lapb_in.c b/net/lapb/lapb_in.c index 21904a002449..2ec1af5c36cc 100644 --- a/net/lapb/lapb_in.c +++ b/net/lapb/lapb_in.c @@ -44,89 +44,86 @@ static void lapb_state0_machine(struct lapb_cb *lapb, struct sk_buff *skb, struct lapb_frame *frame) { switch (frame->type) { - case LAPB_SABM: + case LAPB_SABM: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S0 RX SABM(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S0 RX SABM(%d)\n", + lapb->dev, frame->pf); #endif - if (lapb->mode & LAPB_EXTENDED) { + if (lapb->mode & LAPB_EXTENDED) { #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S0 TX DM(%d)\n", - lapb->dev, frame->pf); + 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 { + 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); + 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); + 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; + 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: + case LAPB_SABME: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S0 RX SABME(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S0 RX SABME(%d)\n", + lapb->dev, frame->pf); #endif - if (lapb->mode & LAPB_EXTENDED) { + if (lapb->mode & LAPB_EXTENDED) { #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S0 TX UA(%d)\n", - lapb->dev, frame->pf); + 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); + 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); + 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; + lapb_send_control(lapb, LAPB_DM, frame->pf, + LAPB_RESPONSE); + } + break; - case LAPB_DISC: + 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); + 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 - lapb_send_control(lapb, LAPB_UA, frame->pf, - LAPB_RESPONSE); - break; + lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE); + break; - default: - break; + default: + break; } kfree_skb(skb); @@ -140,100 +137,97 @@ static void lapb_state1_machine(struct lapb_cb *lapb, struct sk_buff *skb, struct lapb_frame *frame) { switch (frame->type) { - case LAPB_SABM: + case LAPB_SABM: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S1 RX SABM(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S1 RX SABM(%d)\n", + lapb->dev, frame->pf); #endif - if (lapb->mode & LAPB_EXTENDED) { + 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); + printk(KERN_DEBUG "lapb: (%p) S1 TX DM(%d)\n", + lapb->dev, frame->pf); #endif - lapb_send_control(lapb, LAPB_UA, frame->pf, - LAPB_RESPONSE); - } - break; - - case LAPB_SABME: + lapb_send_control(lapb, LAPB_DM, frame->pf, + LAPB_RESPONSE); + } else { #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S1 RX SABME(%d)\n", + printk(KERN_DEBUG "lapb: (%p) S1 TX UA(%d)\n", lapb->dev, frame->pf); #endif - if (lapb->mode & LAPB_EXTENDED) { + lapb_send_control(lapb, LAPB_UA, frame->pf, + LAPB_RESPONSE); + } + break; + + case LAPB_SABME: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S1 TX UA(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S1 RX SABME(%d)\n", + lapb->dev, frame->pf); #endif - lapb_send_control(lapb, LAPB_UA, frame->pf, - LAPB_RESPONSE); - } else { + if (lapb->mode & LAPB_EXTENDED) { #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S1 TX DM(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S1 TX UA(%d)\n", + lapb->dev, frame->pf); #endif - lapb_send_control(lapb, LAPB_DM, frame->pf, - LAPB_RESPONSE); - } - break; - - case LAPB_DISC: + lapb_send_control(lapb, LAPB_UA, frame->pf, + LAPB_RESPONSE); + } else { #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 lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE); - break; + } + break; - case LAPB_UA: + case LAPB_DISC: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S1 RX UA(%d)\n", - lapb->dev, frame->pf); + 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 - 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; + lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE); + break; - case LAPB_DM: + case LAPB_UA: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S1 RX DM(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S1 RX UA(%d)\n", + lapb->dev, frame->pf); #endif - if (frame->pf) { + 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; + 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; } kfree_skb(skb); @@ -247,78 +241,73 @@ 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: + 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); + 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 - lapb_send_control(lapb, LAPB_DM, frame->pf, - LAPB_RESPONSE); - break; + lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE); + break; - case LAPB_DISC: + 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); + 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; + lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE); + break; - case LAPB_UA: + case LAPB_UA: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S2 RX UA(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S2 RX UA(%d)\n", + lapb->dev, frame->pf); #endif - if (frame->pf) { + if (frame->pf) { #if LAPB_DEBUG > 0 - printk(KERN_DEBUG "lapb: (%p) S2 -> S0\n", - lapb->dev); + 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; + lapb->state = LAPB_STATE_0; + lapb_start_t1timer(lapb); + lapb_stop_t2timer(lapb); + lapb_disconnect_confirmation(lapb, LAPB_OK); + } + break; - case LAPB_DM: + case LAPB_DM: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S2 RX DM(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S2 RX DM(%d)\n", + lapb->dev, frame->pf); #endif - if (frame->pf) { + 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; + 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: + 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); + 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; + if (frame->pf) + lapb_send_control(lapb, LAPB_DM, frame->pf, + LAPB_RESPONSE); + break; } kfree_skb(skb); @@ -336,277 +325,267 @@ static void lapb_state3_machine(struct lapb_cb *lapb, struct sk_buff *skb, LAPB_SMODULUS; switch (frame->type) { - case LAPB_SABM: + case LAPB_SABM: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S3 RX SABM(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S3 RX SABM(%d)\n", + lapb->dev, frame->pf); #endif - if (lapb->mode & LAPB_EXTENDED) { + if (lapb->mode & LAPB_EXTENDED) { #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S3 TX DM(%d)\n", - lapb->dev, frame->pf); + 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 { + 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); + 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; + 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: + case LAPB_SABME: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S3 RX SABME(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S3 RX SABME(%d)\n", + lapb->dev, frame->pf); #endif - if (lapb->mode & LAPB_EXTENDED) { + if (lapb->mode & LAPB_EXTENDED) { #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S3 TX UA(%d)\n", - lapb->dev, frame->pf); + 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 { + 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); + 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; + lapb_send_control(lapb, LAPB_DM, frame->pf, + LAPB_RESPONSE); + } + break; - case LAPB_DISC: + case LAPB_DISC: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S3 RX DISC(%d)\n", - lapb->dev, frame->pf); + 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); + printk(KERN_DEBUG "lapb: (%p) S3 -> S0\n", lapb->dev); #endif - 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; + 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: + case LAPB_DM: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S3 RX DM(%d)\n", - lapb->dev, frame->pf); + 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); + printk(KERN_DEBUG "lapb: (%p) S3 -> 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_NOTCONNECTED); - break; + 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: + 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); + 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); + 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); + 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; + lapb_start_t1timer(lapb); + lapb_stop_t2timer(lapb); + lapb->state = LAPB_STATE_4; + lapb->n2count = 0; + } + break; - case LAPB_RR: + 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); + 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); + 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); + 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; + lapb_start_t1timer(lapb); + lapb_stop_t2timer(lapb); + lapb->state = LAPB_STATE_4; + lapb->n2count = 0; + } + break; - case LAPB_REJ: + 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); + 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); + 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); + 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; + lapb_start_t1timer(lapb); + lapb_stop_t2timer(lapb); + lapb->state = LAPB_STATE_4; + lapb->n2count = 0; + } + break; - case LAPB_I: + 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); + 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_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); + 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; + 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; } - 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); } - lapb->vr = (lapb->vr + 1) % modulus; - lapb->condition &= ~LAPB_REJECT_CONDITION; + } + } else { + if (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; - } +#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; + } + break; - case LAPB_FRMR: + 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]); + 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); + lapb_establish_data_link(lapb); #if LAPB_DEBUG > 0 - printk(KERN_DEBUG "lapb: (%p) S3 -> S1\n", - lapb->dev); + printk(KERN_DEBUG "lapb: (%p) S3 -> S1\n", lapb->dev); #endif - lapb_requeue_frames(lapb); - lapb->state = LAPB_STATE_1; - break; + lapb_requeue_frames(lapb); + lapb->state = LAPB_STATE_1; + break; - case LAPB_ILLEGAL: + case LAPB_ILLEGAL: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S3 RX ILLEGAL(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S3 RX ILLEGAL(%d)\n", + lapb->dev, frame->pf); #endif - lapb->frmr_data = *frame; - lapb->frmr_type = LAPB_FRMR_W; - lapb_transmit_frmr(lapb); + lapb->frmr_data = *frame; + lapb->frmr_type = LAPB_FRMR_W; + lapb_transmit_frmr(lapb); #if LAPB_DEBUG > 0 - printk(KERN_DEBUG "lapb: (%p) S3 -> S4\n", lapb->dev); + 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; + lapb_start_t1timer(lapb); + lapb_stop_t2timer(lapb); + lapb->state = LAPB_STATE_4; + lapb->n2count = 0; + break; } if (!queued) @@ -621,75 +600,73 @@ static void lapb_state4_machine(struct lapb_cb *lapb, struct sk_buff *skb, struct lapb_frame *frame) { switch (frame->type) { - case LAPB_SABM: + case LAPB_SABM: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S4 RX SABM(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S4 RX SABM(%d)\n", + lapb->dev, frame->pf); #endif - if (lapb->mode & LAPB_EXTENDED) { + if (lapb->mode & LAPB_EXTENDED) { #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S4 TX DM(%d)\n", - lapb->dev, frame->pf); + 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 { + 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); + 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); + 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; + 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: + case LAPB_SABME: #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S4 RX SABME(%d)\n", - lapb->dev, frame->pf); + printk(KERN_DEBUG "lapb: (%p) S4 RX SABME(%d)\n", + lapb->dev, frame->pf); #endif - if (lapb->mode & LAPB_EXTENDED) { + if (lapb->mode & LAPB_EXTENDED) { #if LAPB_DEBUG > 1 - printk(KERN_DEBUG "lapb: (%p) S4 TX UA(%d)\n", - lapb->dev, frame->pf); + 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); + 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); + 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; + lapb_send_control(lapb, LAPB_DM, frame->pf, + LAPB_RESPONSE); + } + break; } kfree_skb(skb); |