91 #define PF_TO_X(pf, X)		container_of(pf, X, file)  argument
93 #define PF_TO_PPP(pf)		PF_TO_X(pf, struct ppp)  argument
94 #define PF_TO_CHANNEL(pf)	PF_TO_X(pf, struct channel)  argument
248 static int ppp_unattached_ioctl(struct net *net, struct ppp_file *pf,
273 static void init_ppp_file(struct ppp_file *pf, int kind);
388 	struct ppp_file *pf = file->private_data;  in ppp_release()  local
391 	if (pf) {  in ppp_release()
393 		if (pf->kind == INTERFACE) {  in ppp_release()
394 			ppp = PF_TO_PPP(pf);  in ppp_release()
398 		if (atomic_dec_and_test(&pf->refcnt)) {  in ppp_release()
399 			switch (pf->kind) {  in ppp_release()
401 				ppp_destroy_interface(PF_TO_PPP(pf));  in ppp_release()
404 				ppp_destroy_channel(PF_TO_CHANNEL(pf));  in ppp_release()
415 	struct ppp_file *pf = file->private_data;  in ppp_read()  local
424 	if (!pf)  in ppp_read()
426 	add_wait_queue(&pf->rwait, &wait);  in ppp_read()
429 		skb = skb_dequeue(&pf->rq);  in ppp_read()
433 		if (pf->dead)  in ppp_read()
435 		if (pf->kind == INTERFACE) {  in ppp_read()
441 			struct ppp *ppp = PF_TO_PPP(pf);  in ppp_read()
455 	remove_wait_queue(&pf->rwait, &wait);  in ppp_read()
480 	struct ppp_file *pf = file->private_data;  in ppp_write()  local
484 	if (!pf)  in ppp_write()
487 	skb = alloc_skb(count + pf->hdrlen, GFP_KERNEL);  in ppp_write()
490 	skb_reserve(skb, pf->hdrlen);  in ppp_write()
497 	skb_queue_tail(&pf->xq, skb);  in ppp_write()
499 	switch (pf->kind) {  in ppp_write()
501 		ppp_xmit_process(PF_TO_PPP(pf));  in ppp_write()
504 		ppp_channel_push(PF_TO_CHANNEL(pf));  in ppp_write()
517 	struct ppp_file *pf = file->private_data;  in ppp_poll()  local
520 	if (!pf)  in ppp_poll()
522 	poll_wait(file, &pf->rwait, wait);  in ppp_poll()
524 	if (skb_peek(&pf->rq))  in ppp_poll()
526 	if (pf->dead)  in ppp_poll()
528 	else if (pf->kind == INTERFACE) {  in ppp_poll()
530 		struct ppp *ppp = PF_TO_PPP(pf);  in ppp_poll()
566 	struct ppp_file *pf = file->private_data;  in ppp_ioctl()  local
576 	if (!pf)  in ppp_ioctl()
578 					pf, file, cmd, arg);  in ppp_ioctl()
594 		if (pf->kind == INTERFACE) {  in ppp_ioctl()
595 			ppp = PF_TO_PPP(pf);  in ppp_ioctl()
609 	if (pf->kind == CHANNEL) {  in ppp_ioctl()
614 		pch = PF_TO_CHANNEL(pf);  in ppp_ioctl()
639 	if (pf->kind != INTERFACE) {  in ppp_ioctl()
646 	ppp = PF_TO_PPP(pf);  in ppp_ioctl()
824 static int ppp_unattached_ioctl(struct net *net, struct ppp_file *pf,  in ppp_unattached_ioctl()  argument
2767 init_ppp_file(struct ppp_file *pf, int kind)  in init_ppp_file()  argument
2769 	pf->kind = kind;  in init_ppp_file()
2770 	skb_queue_head_init(&pf->xq);  in init_ppp_file()
2771 	skb_queue_head_init(&pf->rq);  in init_ppp_file()
2772 	atomic_set(&pf->refcnt, 1);  in init_ppp_file()
2773 	init_waitqueue_head(&pf->rwait);  in init_ppp_file()