63 	struct atm_vcc	*atmvcc;	/* VCC descriptor */  member
80 static inline struct pppoatm_vcc *atmvcc_to_pvcc(const struct atm_vcc *atmvcc)  in atmvcc_to_pvcc()  argument
82 	return (struct pppoatm_vcc *) (atmvcc->user_back);  in atmvcc_to_pvcc()
105 static void pppoatm_pop(struct atm_vcc *atmvcc, struct sk_buff *skb)  in pppoatm_pop()  argument
107 	struct pppoatm_vcc *pvcc = atmvcc_to_pvcc(atmvcc);  in pppoatm_pop()
108 	pvcc->old_pop(atmvcc, skb);  in pppoatm_pop()
124 static void pppoatm_unassign_vcc(struct atm_vcc *atmvcc)  in pppoatm_unassign_vcc()  argument
127 	pvcc = atmvcc_to_pvcc(atmvcc);  in pppoatm_unassign_vcc()
128 	atmvcc->push = pvcc->old_push;  in pppoatm_unassign_vcc()
129 	atmvcc->pop = pvcc->old_pop;  in pppoatm_unassign_vcc()
132 	atmvcc->user_back = NULL;  in pppoatm_unassign_vcc()
139 static void pppoatm_push(struct atm_vcc *atmvcc, struct sk_buff *skb)  in pppoatm_push()  argument
141 	struct pppoatm_vcc *pvcc = atmvcc_to_pvcc(atmvcc);  in pppoatm_push()
145 		pppoatm_unassign_vcc(atmvcc);  in pppoatm_push()
146 		atmvcc->push(atmvcc, NULL);	/* Pass along bad news */  in pppoatm_push()
149 	atm_return(atmvcc, skb->truesize);  in pppoatm_push()
204 	ATM_SKB(skb)->vcc = pvcc->atmvcc;  in pppoatm_send()
206 	    pvcc->chan.unit, skb, pvcc->atmvcc);  in pppoatm_send()
215 			    !atm_may_send(pvcc->atmvcc, n->truesize)) {  in pppoatm_send()
222 		} else if (!atm_may_send(pvcc->atmvcc, skb->truesize))  in pppoatm_send()
227 		if (!atm_may_send(pvcc->atmvcc, skb->truesize))  in pppoatm_send()
274 static int pppoatm_assign_vcc(struct atm_vcc *atmvcc, unsigned long arg)  in pppoatm_assign_vcc()  argument
296 	pvcc->atmvcc = atmvcc;  in pppoatm_assign_vcc()
297 	pvcc->old_push = atmvcc->push;  in pppoatm_assign_vcc()
298 	pvcc->old_pop = atmvcc->pop;  in pppoatm_assign_vcc()
302 	pvcc->chan.mtu = atmvcc->qos.txtp.max_sdu - PPP_HDRLEN -  in pppoatm_assign_vcc()
310 	atmvcc->user_back = pvcc;  in pppoatm_assign_vcc()
311 	atmvcc->push = pppoatm_push;  in pppoatm_assign_vcc()
312 	atmvcc->pop = pppoatm_pop;  in pppoatm_assign_vcc()
320 static int pppoatm_ioctl(struct atm_vcc *atmvcc, unsigned int cmd,  in pppoatm_ioctl()  argument
323 	if (cmd != ATM_SETBACKEND && atmvcc->push != pppoatm_push)  in pppoatm_ioctl()
334 		return pppoatm_assign_vcc(atmvcc, arg);  in pppoatm_ioctl()
337 		return put_user(ppp_channel_index(&atmvcc_to_pvcc(atmvcc)->  in pppoatm_ioctl()
340 		return put_user(ppp_unit_number(&atmvcc_to_pvcc(atmvcc)->  in pppoatm_ioctl()