57 	struct atm_vcc	*atmvcc;	/* VCC descriptor */  member
89 static inline struct pppoatm_vcc *atmvcc_to_pvcc(const struct atm_vcc *atmvcc)  in atmvcc_to_pvcc()  argument
91 	return (struct pppoatm_vcc *) (atmvcc->user_back);  in atmvcc_to_pvcc()
109 static void pppoatm_release_cb(struct atm_vcc *atmvcc)  in pppoatm_release_cb()  argument
111 	struct pppoatm_vcc *pvcc = atmvcc_to_pvcc(atmvcc);  in pppoatm_release_cb()
125 		pvcc->old_release_cb(atmvcc);  in pppoatm_release_cb()
132 static void pppoatm_pop(struct atm_vcc *atmvcc, struct sk_buff *skb)  in pppoatm_pop()  argument
134 	struct pppoatm_vcc *pvcc = atmvcc_to_pvcc(atmvcc);  in pppoatm_pop()
136 	pvcc->old_pop(atmvcc, skb);  in pppoatm_pop()
165 static void pppoatm_unassign_vcc(struct atm_vcc *atmvcc)  in pppoatm_unassign_vcc()  argument
168 	pvcc = atmvcc_to_pvcc(atmvcc);  in pppoatm_unassign_vcc()
169 	atmvcc->push = pvcc->old_push;  in pppoatm_unassign_vcc()
170 	atmvcc->pop = pvcc->old_pop;  in pppoatm_unassign_vcc()
171 	atmvcc->release_cb = pvcc->old_release_cb;  in pppoatm_unassign_vcc()
174 	atmvcc->user_back = NULL;  in pppoatm_unassign_vcc()
179 static void pppoatm_push(struct atm_vcc *atmvcc, struct sk_buff *skb)  in pppoatm_push()  argument
181 	struct pppoatm_vcc *pvcc = atmvcc_to_pvcc(atmvcc);  in pppoatm_push()
188 		pppoatm_unassign_vcc(atmvcc);  in pppoatm_push()
189 		atmvcc->push(atmvcc, NULL);	/* Pass along bad news */  in pppoatm_push()
193 	atm_return(atmvcc, skb->truesize);  in pppoatm_push()
241 	if (atm_may_send(pvcc->atmvcc, size) &&  in pppoatm_may_send()
271 	if (atm_may_send(pvcc->atmvcc, size) &&  in pppoatm_may_send()
293 	ATM_SKB(skb)->vcc = pvcc->atmvcc;  in pppoatm_send()
294 	pr_debug("(skb=0x%p, vcc=0x%p)\n", skb, pvcc->atmvcc);  in pppoatm_send()
387 static int pppoatm_assign_vcc(struct atm_vcc *atmvcc, void __user *arg)  in pppoatm_assign_vcc()  argument
405 	pvcc->atmvcc = atmvcc;  in pppoatm_assign_vcc()
409 	pvcc->old_push = atmvcc->push;  in pppoatm_assign_vcc()
410 	pvcc->old_pop = atmvcc->pop;  in pppoatm_assign_vcc()
411 	pvcc->old_owner = atmvcc->owner;  in pppoatm_assign_vcc()
412 	pvcc->old_release_cb = atmvcc->release_cb;  in pppoatm_assign_vcc()
416 	pvcc->chan.mtu = atmvcc->qos.txtp.max_sdu - PPP_HDRLEN -  in pppoatm_assign_vcc()
425 	atmvcc->user_back = pvcc;  in pppoatm_assign_vcc()
426 	atmvcc->push = pppoatm_push;  in pppoatm_assign_vcc()
427 	atmvcc->pop = pppoatm_pop;  in pppoatm_assign_vcc()
428 	atmvcc->release_cb = pppoatm_release_cb;  in pppoatm_assign_vcc()
430 	atmvcc->owner = THIS_MODULE;  in pppoatm_assign_vcc()
434 	vcc_process_recv_queue(atmvcc);  in pppoatm_assign_vcc()
445 	struct atm_vcc *atmvcc = ATM_SD(sock);  in pppoatm_ioctl()  local
448 	if (cmd != ATM_SETBACKEND && atmvcc->push != pppoatm_push)  in pppoatm_ioctl()
461 		return pppoatm_assign_vcc(atmvcc, argp);  in pppoatm_ioctl()
464 		return put_user(ppp_channel_index(&atmvcc_to_pvcc(atmvcc)->  in pppoatm_ioctl()
467 		return put_user(ppp_unit_number(&atmvcc_to_pvcc(atmvcc)->  in pppoatm_ioctl()