net/ppp/ppp_generic.c

92 #define PF_TO_X(pf, X)		container_of(pf, X, file)
94 #define PF_TO_PPP(pf)		PF_TO_X(pf, struct ppp)
95 #define PF_TO_CHANNEL(pf)	PF_TO_X(pf, struct channel)
258 static int ppp_unattached_ioctl(struct net *net, struct ppp_file *pf,
283 static void init_ppp_file(struct ppp_file *pf, int kind);
400 	struct ppp_file *pf = file->private_data;
403 	if (pf) {
405 		if (pf->kind == INTERFACE) {
406 			ppp = PF_TO_PPP(pf);
412 		if (refcount_dec_and_test(&pf->refcnt)) {
413 			switch (pf->kind) {
415 				ppp_destroy_interface(PF_TO_PPP(pf));
418 				ppp_destroy_channel(PF_TO_CHANNEL(pf));
429 	struct ppp_file *pf = file->private_data;
438 	if (!pf)
440 	add_wait_queue(&pf->rwait, &wait);
443 		skb = skb_dequeue(&pf->rq);
447 		if (pf->dead)
449 		if (pf->kind == INTERFACE) {
455 			struct ppp *ppp = PF_TO_PPP(pf);
474 	remove_wait_queue(&pf->rwait, &wait);
499 	struct ppp_file *pf = file->private_data;
503 	if (!pf)
509 	skb = alloc_skb(count + pf->hdrlen, GFP_KERNEL);
512 	skb_reserve(skb, pf->hdrlen);
519 	switch (pf->kind) {
521 		ppp_xmit_process(PF_TO_PPP(pf), skb);
524 		skb_queue_tail(&pf->xq, skb);
525 		ppp_channel_push(PF_TO_CHANNEL(pf));
538 	struct ppp_file *pf = file->private_data;
541 	if (!pf)
543 	poll_wait(file, &pf->rwait, wait);
545 	if (skb_peek(&pf->rq))
547 	if (pf->dead)
549 	else if (pf->kind == INTERFACE) {
551 		struct ppp *ppp = PF_TO_PPP(pf);
703 	struct ppp_file *pf;
716 	pf = file->private_data;
717 	if (!pf) {
719 					   pf, file, cmd, arg);
735 	if (pf->kind == CHANNEL) {
740 		pch = PF_TO_CHANNEL(pf);
789 	if (pf->kind != INTERFACE) {
796 	ppp = PF_TO_PPP(pf);
970 	struct ppp_file *pf;
976 	pf = file->private_data;
977 	if (pf && pf->kind == INTERFACE) {
978 		struct ppp *ppp = PF_TO_PPP(pf);
1031 static int ppp_unattached_ioctl(struct net *net, struct ppp_file *pf,
3354 init_ppp_file(struct ppp_file *pf, int kind)
3356 	pf->kind = kind;
3357 	skb_queue_head_init(&pf->xq);
3358 	skb_queue_head_init(&pf->rq);
3359 	refcount_set(&pf->refcnt, 1);
3360 	init_waitqueue_head(&pf->rwait);