84 #define PF_TO_X(pf, X)		((X *)((char *)(pf) - offsetof(X, file)))  argument
86 #define PF_TO_PPP(pf)		PF_TO_X(pf, struct ppp)  argument
87 #define PF_TO_CHANNEL(pf)	PF_TO_X(pf, struct channel)  argument
238 static int ppp_unattached_ioctl(struct ppp_file *pf, struct file *file,
263 static void init_ppp_file(struct ppp_file *pf, int kind);
352 	struct ppp_file *pf = file->private_data;  in ppp_release()  local
355 	if (pf != 0) {  in ppp_release()
357 		if (pf->kind == INTERFACE) {  in ppp_release()
358 			ppp = PF_TO_PPP(pf);  in ppp_release()
362 		if (atomic_dec_and_test(&pf->refcnt)) {  in ppp_release()
363 			switch (pf->kind) {  in ppp_release()
365 				ppp_destroy_interface(PF_TO_PPP(pf));  in ppp_release()
368 				ppp_destroy_channel(PF_TO_CHANNEL(pf));  in ppp_release()
379 	struct ppp_file *pf = file->private_data;  in ppp_read()  local
384 	if (pf == 0)  in ppp_read()
386 	add_wait_queue(&pf->rwait, &wait);  in ppp_read()
389 		skb = skb_dequeue(&pf->rq);  in ppp_read()
393 		if (pf->dead)  in ppp_read()
404 	remove_wait_queue(&pf->rwait, &wait);  in ppp_read()
426 	struct ppp_file *pf = file->private_data;  in ppp_write()  local
430 	if (pf == 0)  in ppp_write()
433 	skb = alloc_skb(count + pf->hdrlen, GFP_KERNEL);  in ppp_write()
436 	skb_reserve(skb, pf->hdrlen);  in ppp_write()
443 	skb_queue_tail(&pf->xq, skb);  in ppp_write()
445 	switch (pf->kind) {  in ppp_write()
447 		ppp_xmit_process(PF_TO_PPP(pf));  in ppp_write()
450 		ppp_channel_push(PF_TO_CHANNEL(pf));  in ppp_write()
463 	struct ppp_file *pf = file->private_data;  in ppp_poll()  local
466 	if (pf == 0)  in ppp_poll()
468 	poll_wait(file, &pf->rwait, wait);  in ppp_poll()
470 	if (skb_peek(&pf->rq) != 0)  in ppp_poll()
472 	if (pf->dead)  in ppp_poll()
480 	struct ppp_file *pf = file->private_data;  in ppp_ioctl()  local
488 	if (pf == 0)  in ppp_ioctl()
489 		return ppp_unattached_ioctl(pf, file, cmd, arg);  in ppp_ioctl()
504 		if (pf->kind == INTERFACE) {  in ppp_ioctl()
505 			ppp = PF_TO_PPP(pf);  in ppp_ioctl()
518 	if (pf->kind == CHANNEL) {  in ppp_ioctl()
519 		struct channel *pch = PF_TO_CHANNEL(pf);  in ppp_ioctl()
544 	if (pf->kind != INTERFACE) {  in ppp_ioctl()
550 	ppp = PF_TO_PPP(pf);  in ppp_ioctl()
709 static int ppp_unattached_ioctl(struct ppp_file *pf, struct file *file,  in ppp_unattached_ioctl()  argument
2304 init_ppp_file(struct ppp_file *pf, int kind)  in init_ppp_file()  argument
2306 	pf->kind = kind;  in init_ppp_file()
2307 	skb_queue_head_init(&pf->xq);  in init_ppp_file()
2308 	skb_queue_head_init(&pf->rq);  in init_ppp_file()
2309 	atomic_set(&pf->refcnt, 1);  in init_ppp_file()
2310 	init_waitqueue_head(&pf->rwait);  in init_ppp_file()