net/lapb/lapb_in.c

40 				struct lapb_frame *frame)
42 	switch (frame->type) {
44 		lapb_dbg(1, "(%p) S0 RX SABM(%d)\n", lapb->dev, frame->pf);
47 				 lapb->dev, frame->pf);
48 			lapb_send_control(lapb, LAPB_DM, frame->pf,
52 				 lapb->dev, frame->pf);
54 			lapb_send_control(lapb, LAPB_UA, frame->pf,
69 		lapb_dbg(1, "(%p) S0 RX SABME(%d)\n", lapb->dev, frame->pf);
72 				 lapb->dev, frame->pf);
74 			lapb_send_control(lapb, LAPB_UA, frame->pf,
87 				 lapb->dev, frame->pf);
88 			lapb_send_control(lapb, LAPB_DM, frame->pf,
94 		lapb_dbg(1, "(%p) S0 RX DISC(%d)\n", lapb->dev, frame->pf);
95 		lapb_dbg(1, "(%p) S0 TX UA(%d)\n", lapb->dev, frame->pf);
96 		lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
111 				struct lapb_frame *frame)
113 	switch (frame->type) {
115 		lapb_dbg(1, "(%p) S1 RX SABM(%d)\n", lapb->dev, frame->pf);
118 				 lapb->dev, frame->pf);
119 			lapb_send_control(lapb, LAPB_DM, frame->pf,
123 				 lapb->dev, frame->pf);
124 			lapb_send_control(lapb, LAPB_UA, frame->pf,
130 		lapb_dbg(1, "(%p) S1 RX SABME(%d)\n", lapb->dev, frame->pf);
133 				 lapb->dev, frame->pf);
134 			lapb_send_control(lapb, LAPB_UA, frame->pf,
138 				 lapb->dev, frame->pf);
139 			lapb_send_control(lapb, LAPB_DM, frame->pf,
145 		lapb_dbg(1, "(%p) S1 RX DISC(%d)\n", lapb->dev, frame->pf);
146 		lapb_dbg(1, "(%p) S1 TX DM(%d)\n", lapb->dev, frame->pf);
147 		lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE);
151 		lapb_dbg(1, "(%p) S1 RX UA(%d)\n", lapb->dev, frame->pf);
152 		if (frame->pf) {
167 		lapb_dbg(1, "(%p) S1 RX DM(%d)\n", lapb->dev, frame->pf);
168 		if (frame->pf) {
187 				struct lapb_frame *frame)
189 	switch (frame->type) {
193 			 lapb->dev, frame->pf);
194 		lapb_dbg(1, "(%p) S2 TX DM(%d)\n", lapb->dev, frame->pf);
195 		lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE);
199 		lapb_dbg(1, "(%p) S2 RX DISC(%d)\n", lapb->dev, frame->pf);
200 		lapb_dbg(1, "(%p) S2 TX UA(%d)\n", lapb->dev, frame->pf);
201 		lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
205 		lapb_dbg(1, "(%p) S2 RX UA(%d)\n", lapb->dev, frame->pf);
206 		if (frame->pf) {
216 		lapb_dbg(1, "(%p) S2 RX DM(%d)\n", lapb->dev, frame->pf);
217 		if (frame->pf) {
231 		       lapb->dev, frame->pf);
232 		lapb_dbg(1, "(%p) S2 RX DM(%d)\n", lapb->dev, frame->pf);
233 		if (frame->pf)
234 			lapb_send_control(lapb, LAPB_DM, frame->pf,
247 				struct lapb_frame *frame)
253 	switch (frame->type) {
255 		lapb_dbg(1, "(%p) S3 RX SABM(%d)\n", lapb->dev, frame->pf);
258 				 lapb->dev, frame->pf);
259 			lapb_send_control(lapb, LAPB_DM, frame->pf,
263 				 lapb->dev, frame->pf);
264 			lapb_send_control(lapb, LAPB_UA, frame->pf,
278 		lapb_dbg(1, "(%p) S3 RX SABME(%d)\n", lapb->dev, frame->pf);
281 				 lapb->dev, frame->pf);
282 			lapb_send_control(lapb, LAPB_UA, frame->pf,
294 				 lapb->dev, frame->pf);
295 			lapb_send_control(lapb, LAPB_DM, frame->pf,
301 		lapb_dbg(1, "(%p) S3 RX DISC(%d)\n", lapb->dev, frame->pf);
304 		lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
312 		lapb_dbg(1, "(%p) S3 RX DM(%d)\n", lapb->dev, frame->pf);
323 			 lapb->dev, frame->pf, frame->nr);
325 		lapb_check_need_response(lapb, frame->cr, frame->pf);
326 		if (lapb_validate_nr(lapb, frame->nr)) {
327 			lapb_check_iframes_acked(lapb, frame->nr);
329 			lapb->frmr_data = *frame;
342 			 lapb->dev, frame->pf, frame->nr);
344 		lapb_check_need_response(lapb, frame->cr, frame->pf);
345 		if (lapb_validate_nr(lapb, frame->nr)) {
346 			lapb_check_iframes_acked(lapb, frame->nr);
348 			lapb->frmr_data = *frame;
361 			 lapb->dev, frame->pf, frame->nr);
363 		lapb_check_need_response(lapb, frame->cr, frame->pf);
364 		if (lapb_validate_nr(lapb, frame->nr)) {
365 			lapb_frames_acked(lapb, frame->nr);
370 			lapb->frmr_data = *frame;
383 			 lapb->dev, frame->pf, frame->ns, frame->nr);
384 		if (!lapb_validate_nr(lapb, frame->nr)) {
385 			lapb->frmr_data = *frame;
396 			lapb_frames_acked(lapb, frame->nr);
398 			lapb_check_iframes_acked(lapb, frame->nr);
400 		if (frame->ns == lapb->vr) {
405 			 * If upper layer has dropped the frame, we
408 			 * to re-transmit the frame later like
409 			 * a frame lost on the wire.
417 			if (frame->pf)
428 				if (frame->pf)
432 					 lapb->dev, frame->pf, lapb->vr);
434 				lapb_send_control(lapb, LAPB_REJ, frame->pf,
443 			 lapb->dev, frame->pf,
452 		lapb_dbg(1, "(%p) S3 RX ILLEGAL(%d)\n", lapb->dev, frame->pf);
453 		lapb->frmr_data = *frame;
473 				struct lapb_frame *frame)
475 	switch (frame->type) {
477 		lapb_dbg(1, "(%p) S4 RX SABM(%d)\n", lapb->dev, frame->pf);
480 				 lapb->dev, frame->pf);
481 			lapb_send_control(lapb, LAPB_DM, frame->pf,
485 				 lapb->dev, frame->pf);
487 			lapb_send_control(lapb, LAPB_UA, frame->pf,
502 		lapb_dbg(1, "(%p) S4 RX SABME(%d)\n", lapb->dev, frame->pf);
505 				 lapb->dev, frame->pf);
507 			lapb_send_control(lapb, LAPB_UA, frame->pf,
520 				 lapb->dev, frame->pf);
521 			lapb_send_control(lapb, LAPB_DM, frame->pf,
531  *	Process an incoming LAPB frame
535 	struct lapb_frame frame;
537 	if (lapb_decode(lapb, skb, &frame) < 0) {
544 		lapb_state0_machine(lapb, skb, &frame); break;
546 		lapb_state1_machine(lapb, skb, &frame); break;
548 		lapb_state2_machine(lapb, skb, &frame); break;
550 		lapb_state3_machine(lapb, skb, &frame); break;
552 		lapb_state4_machine(lapb, skb, &frame); break;