Lines Matching defs:lapb
34 #include <net/lapb.h>
40 static void lapb_send_iframe(struct lapb_cb *lapb, struct sk_buff *skb, int poll_bit)
47 if (lapb->mode & LAPB_EXTENDED) {
51 frame[0] |= lapb->vs << 1;
53 frame[1] |= lapb->vr << 1;
59 *frame |= lapb->vr << 5;
60 *frame |= lapb->vs << 1;
64 printk(KERN_DEBUG "lapb: (%p) S%d TX I(%d) S%d R%d\n",
65 lapb->dev, lapb->state, poll_bit, lapb->vs, lapb->vr);
68 lapb_transmit_buffer(lapb, skb, LAPB_COMMAND);
71 void lapb_kick(struct lapb_cb *lapb)
76 modulus = (lapb->mode & LAPB_EXTENDED) ? LAPB_EMODULUS : LAPB_SMODULUS;
77 start = !skb_peek(&lapb->ack_queue) ? lapb->va : lapb->vs;
78 end = (lapb->va + lapb->window) % modulus;
80 if (!(lapb->condition & LAPB_PEER_RX_BUSY_CONDITION) &&
81 start != end && skb_peek(&lapb->write_queue)) {
82 lapb->vs = start;
87 skb = skb_dequeue(&lapb->write_queue);
91 skb_queue_head(&lapb->write_queue, skb);
101 lapb_send_iframe(lapb, skbn, LAPB_POLLOFF);
103 lapb->vs = (lapb->vs + 1) % modulus;
108 skb_queue_tail(&lapb->ack_queue, skb);
110 } while (lapb->vs != end && (skb = skb_dequeue(&lapb->write_queue)) != NULL);
112 lapb->condition &= ~LAPB_ACK_PENDING_CONDITION;
114 if (!lapb_t1timer_running(lapb))
115 lapb_start_t1timer(lapb);
119 void lapb_transmit_buffer(struct lapb_cb *lapb, struct sk_buff *skb, int type)
125 if (lapb->mode & LAPB_MLP) {
126 if (lapb->mode & LAPB_DCE) {
138 if (lapb->mode & LAPB_DCE) {
152 printk(KERN_DEBUG "lapb: (%p) S%d TX %02X %02X %02X\n",
153 lapb->dev, lapb->state,
157 if (!lapb_data_transmit(lapb, skb))
161 void lapb_establish_data_link(struct lapb_cb *lapb)
163 lapb->condition = 0x00;
164 lapb->n2count = 0;
166 if (lapb->mode & LAPB_EXTENDED) {
168 printk(KERN_DEBUG "lapb: (%p) S%d TX SABME(1)\n",
169 lapb->dev, lapb->state);
171 lapb_send_control(lapb, LAPB_SABME, LAPB_POLLON, LAPB_COMMAND);
174 printk(KERN_DEBUG "lapb: (%p) S%d TX SABM(1)\n",
175 lapb->dev, lapb->state);
177 lapb_send_control(lapb, LAPB_SABM, LAPB_POLLON, LAPB_COMMAND);
180 lapb_start_t1timer(lapb);
181 lapb_stop_t2timer(lapb);
184 void lapb_enquiry_response(struct lapb_cb *lapb)
187 printk(KERN_DEBUG "lapb: (%p) S%d TX RR(1) R%d\n",
188 lapb->dev, lapb->state, lapb->vr);
191 lapb_send_control(lapb, LAPB_RR, LAPB_POLLON, LAPB_RESPONSE);
193 lapb->condition &= ~LAPB_ACK_PENDING_CONDITION;
196 void lapb_timeout_response(struct lapb_cb *lapb)
199 printk(KERN_DEBUG "lapb: (%p) S%d TX RR(0) R%d\n",
200 lapb->dev, lapb->state, lapb->vr);
202 lapb_send_control(lapb, LAPB_RR, LAPB_POLLOFF, LAPB_RESPONSE);
204 lapb->condition &= ~LAPB_ACK_PENDING_CONDITION;
207 void lapb_check_iframes_acked(struct lapb_cb *lapb, unsigned short nr)
209 if (lapb->vs == nr) {
210 lapb_frames_acked(lapb, nr);
211 lapb_stop_t1timer(lapb);
212 lapb->n2count = 0;
213 } else if (lapb->va != nr) {
214 lapb_frames_acked(lapb, nr);
215 lapb_start_t1timer(lapb);
219 void lapb_check_need_response(struct lapb_cb *lapb, int type, int pf)
222 lapb_enquiry_response(lapb);