34 static int isdn_ppp_set_compressor(struct ippp_struct *is, struct isdn_ppp_comp_data *);
40 					 struct ippp_struct *is, struct ippp_struct *master, int type);
45 static void isdn_ppp_ccp_kickup(struct ippp_struct *is);
46 static void isdn_ppp_ccp_xmit_reset(struct ippp_struct *is, int proto,
49 static struct ippp_ccp_reset *isdn_ppp_ccp_reset_alloc(struct ippp_struct *is);
50 static void isdn_ppp_ccp_reset_free(struct ippp_struct *is);
51 static void isdn_ppp_ccp_reset_free_state(struct ippp_struct *is,
54 static struct ippp_ccp_reset_state *isdn_ppp_ccp_reset_alloc_state(struct ippp_struct *is,
56 static void isdn_ppp_ccp_reset_trans(struct ippp_struct *is,
58 static void isdn_ppp_ccp_reset_ack_rcvd(struct ippp_struct *is,
110 	struct ippp_struct *is;  in isdn_ppp_free()  local
134 	is = ippp_table[lp->ppp_slot];  in isdn_ppp_free()
135 	if ((is->state & IPPP_CONNECT))  in isdn_ppp_free()
137 	else if (is->state & IPPP_ASSIGNED)  in isdn_ppp_free()
138 		is->state = IPPP_OPEN;	/* fallback to 'OPEN but not ASSIGNED' state */  in isdn_ppp_free()
140 	if (is->debug & 0x1)  in isdn_ppp_free()
141 		printk(KERN_DEBUG "isdn_ppp_free %d %lx %lx\n", lp->ppp_slot, (long) lp, (long) is->lp);  in isdn_ppp_free()
143 	is->lp = NULL;          /* link is down .. set lp to NULL */  in isdn_ppp_free()
160 	struct ippp_struct *is;  in isdn_ppp_bind()  local
204 	is = ippp_table[i];  in isdn_ppp_bind()
205 	is->lp = lp;  in isdn_ppp_bind()
206 	is->unit = unit;  in isdn_ppp_bind()
207 	is->state = IPPP_OPEN | IPPP_ASSIGNED;	/* assigned to a netdevice but not connected */  in isdn_ppp_bind()
245 	struct ippp_struct *is;  in isdn_ppp_closewait()  local
252 	is = ippp_table[slot];  in isdn_ppp_closewait()
253 	if (is->state)  in isdn_ppp_closewait()
254 		wake_up_interruptible(&is->wq);  in isdn_ppp_closewait()
255 	is->state = IPPP_CLOSEWAIT;  in isdn_ppp_closewait()
282 	struct ippp_struct *is;  in isdn_ppp_open()  local
291 	is = file->private_data = ippp_table[slot];  in isdn_ppp_open()
294 	       slot, min, is->state);  in isdn_ppp_open()
297 	is->link_compressor   = is->compressor = NULL;  in isdn_ppp_open()
298 	is->link_decompressor = is->decompressor = NULL;  in isdn_ppp_open()
299 	is->link_comp_stat    = is->comp_stat = NULL;  in isdn_ppp_open()
300 	is->link_decomp_stat  = is->decomp_stat = NULL;  in isdn_ppp_open()
301 	is->compflags = 0;  in isdn_ppp_open()
303 	is->reset = isdn_ppp_ccp_reset_alloc(is);  in isdn_ppp_open()
304 	if (!is->reset)  in isdn_ppp_open()
307 	is->lp = NULL;  in isdn_ppp_open()
308 	is->mp_seqno = 0;       /* MP sequence number */  in isdn_ppp_open()
309 	is->pppcfg = 0;         /* ppp configuration */  in isdn_ppp_open()
310 	is->mpppcfg = 0;        /* mppp configuration */  in isdn_ppp_open()
311 	is->last_link_seqno = -1;	/* MP: maybe set to Bundle-MIN, when joining a bundle ?? */  in isdn_ppp_open()
312 	is->unit = -1;          /* set, when we have our interface */  in isdn_ppp_open()
313 	is->mru = 1524;         /* MRU, default 1524 */  in isdn_ppp_open()
314 	is->maxcid = 16;        /* VJ: maxcid */  in isdn_ppp_open()
315 	is->tk = current;  in isdn_ppp_open()
316 	init_waitqueue_head(&is->wq);  in isdn_ppp_open()
317 	is->first = is->rq + NUM_RCV_BUFFS - 1;	/* receive queue */  in isdn_ppp_open()
318 	is->last = is->rq;  in isdn_ppp_open()
319 	is->minor = min;  in isdn_ppp_open()
324 	is->slcomp = slhc_init(16, 16);	/* not necessary for 2. link in bundle */  in isdn_ppp_open()
325 	if (IS_ERR(is->slcomp)) {  in isdn_ppp_open()
326 		isdn_ppp_ccp_reset_free(is);  in isdn_ppp_open()
327 		return PTR_ERR(is->slcomp);  in isdn_ppp_open()
331 	is->pass_filter = NULL;  in isdn_ppp_open()
332 	is->active_filter = NULL;  in isdn_ppp_open()
334 	is->state = IPPP_OPEN;  in isdn_ppp_open()
346 	struct ippp_struct *is;  in isdn_ppp_release()  local
350 	is = file->private_data;  in isdn_ppp_release()
352 	if (!is) {  in isdn_ppp_release()
356 	if (is->debug & 0x1)  in isdn_ppp_release()
357 		printk(KERN_DEBUG "ippp: release, minor: %d %lx\n", min, (long) is->lp);  in isdn_ppp_release()
359 	if (is->lp) {           /* a lp address says: this link is still up */  in isdn_ppp_release()
360 		isdn_net_dev *p = is->lp->netdev;  in isdn_ppp_release()
366 		is->state &= ~IPPP_CONNECT;	/* -> effect: no call of wakeup */  in isdn_ppp_release()
375 		kfree(is->rq[i].buf);  in isdn_ppp_release()
376 		is->rq[i].buf = NULL;  in isdn_ppp_release()
378 	is->first = is->rq + NUM_RCV_BUFFS - 1;	/* receive queue */  in isdn_ppp_release()
379 	is->last = is->rq;  in isdn_ppp_release()
383 	slhc_free(is->slcomp);  in isdn_ppp_release()
384 	is->slcomp = NULL;  in isdn_ppp_release()
387 	if (is->pass_filter) {  in isdn_ppp_release()
388 		bpf_prog_destroy(is->pass_filter);  in isdn_ppp_release()
389 		is->pass_filter = NULL;  in isdn_ppp_release()
392 	if (is->active_filter) {  in isdn_ppp_release()
393 		bpf_prog_destroy(is->active_filter);  in isdn_ppp_release()
394 		is->active_filter = NULL;  in isdn_ppp_release()
399 	if (is->comp_stat)  in isdn_ppp_release()
400 		is->compressor->free(is->comp_stat);  in isdn_ppp_release()
401 	if (is->link_comp_stat)  in isdn_ppp_release()
402 		is->link_compressor->free(is->link_comp_stat);  in isdn_ppp_release()
403 	if (is->link_decomp_stat)  in isdn_ppp_release()
404 		is->link_decompressor->free(is->link_decomp_stat);  in isdn_ppp_release()
405 	if (is->decomp_stat)  in isdn_ppp_release()
406 		is->decompressor->free(is->decomp_stat);  in isdn_ppp_release()
407 	is->compressor   = is->link_compressor   = NULL;  in isdn_ppp_release()
408 	is->decompressor = is->link_decompressor = NULL;  in isdn_ppp_release()
409 	is->comp_stat    = is->link_comp_stat    = NULL;  in isdn_ppp_release()
410 	is->decomp_stat  = is->link_decomp_stat  = NULL;  in isdn_ppp_release()
413 	if (is->reset)  in isdn_ppp_release()
414 		isdn_ppp_ccp_reset_free(is);  in isdn_ppp_release()
417 	is->state = 0;  in isdn_ppp_release()
480 	struct ippp_struct *is;  in isdn_ppp_ioctl()  local
485 	is = file->private_data;  in isdn_ppp_ioctl()
486 	lp = is->lp;  in isdn_ppp_ioctl()
488 	if (is->debug & 0x1)  in isdn_ppp_ioctl()
489 		printk(KERN_DEBUG "isdn_ppp_ioctl: minor: %d cmd: %x state: %x\n", min, cmd, is->state);  in isdn_ppp_ioctl()
491 	if (!(is->state & IPPP_OPEN))  in isdn_ppp_ioctl()
497 		if (!(is->state & IPPP_CONNECT))  in isdn_ppp_ioctl()
502 		       (int) min, (int) is->unit, (int) val);  in isdn_ppp_ioctl()
503 		return isdn_ppp_bundle(is, val);  in isdn_ppp_ioctl()
509 		if ((r = set_arg(argp, &is->unit, sizeof(is->unit))))  in isdn_ppp_ioctl()
520 		if ((r = set_arg(argp, &is->mpppcfg, sizeof(is->mpppcfg))))  in isdn_ppp_ioctl()
526 		is->mpppcfg = val;  in isdn_ppp_ioctl()
529 		if ((r = set_arg(argp, &is->pppcfg, sizeof(is->pppcfg))))  in isdn_ppp_ioctl()
536 		if (val & SC_ENABLE_IP && !(is->pppcfg & SC_ENABLE_IP) && (is->state & IPPP_CONNECT)) {  in isdn_ppp_ioctl()
539 				is->pppcfg = val; /* isdn_ppp_xmit test for SC_ENABLE_IP !!! */  in isdn_ppp_ioctl()
544 		is->pppcfg = val;  in isdn_ppp_ioctl()
557 		is->mru = val;  in isdn_ppp_ioctl()
567 		if (is->maxcid != val) {  in isdn_ppp_ioctl()
571 			if (is->debug & 0x1)  in isdn_ppp_ioctl()
573 			is->maxcid = val;  in isdn_ppp_ioctl()
578 			if (is->slcomp)  in isdn_ppp_ioctl()
579 				slhc_free(is->slcomp);  in isdn_ppp_ioctl()
580 			is->slcomp = sltmp;  in isdn_ppp_ioctl()
585 		if ((r = set_arg(argp, &is->debug, sizeof(is->debug))))  in isdn_ppp_ioctl()
591 		is->debug = val;  in isdn_ppp_ioctl()
611 		return isdn_ppp_set_compressor(is, &data);  in isdn_ppp_ioctl()
645 		if (is->pass_filter) {  in isdn_ppp_ioctl()
646 			bpf_prog_destroy(is->pass_filter);  in isdn_ppp_ioctl()
647 			is->pass_filter = NULL;  in isdn_ppp_ioctl()
650 			err = bpf_prog_create(&is->pass_filter, &fprog);  in isdn_ppp_ioctl()
669 		if (is->active_filter) {  in isdn_ppp_ioctl()
670 			bpf_prog_destroy(is->active_filter);  in isdn_ppp_ioctl()
671 			is->active_filter = NULL;  in isdn_ppp_ioctl()
674 			err = bpf_prog_create(&is->active_filter, &fprog);  in isdn_ppp_ioctl()
694 	struct ippp_struct *is;  in isdn_ppp_poll()  local
696 	is = file->private_data;  in isdn_ppp_poll()
698 	if (is->debug & 0x2)  in isdn_ppp_poll()
703 	poll_wait(file, &is->wq, wait);  in isdn_ppp_poll()
705 	if (!(is->state & IPPP_OPEN)) {  in isdn_ppp_poll()
706 		if (is->state == IPPP_CLOSEWAIT)  in isdn_ppp_poll()
714 	spin_lock_irqsave(&is->buflock, flags);  in isdn_ppp_poll()
715 	bl = is->last;  in isdn_ppp_poll()
716 	bf = is->first;  in isdn_ppp_poll()
720 	if (bf->next != bl || (is->state & IPPP_NOBLOCK)) {  in isdn_ppp_poll()
721 		is->state &= ~IPPP_NOBLOCK;  in isdn_ppp_poll()
724 	spin_unlock_irqrestore(&is->buflock, flags);  in isdn_ppp_poll()
738 	struct ippp_struct *is;  in isdn_ppp_fill_rq()  local
744 	is = ippp_table[slot];  in isdn_ppp_fill_rq()
746 	if (!(is->state & IPPP_CONNECT)) {  in isdn_ppp_fill_rq()
761 	spin_lock_irqsave(&is->buflock, flags);  in isdn_ppp_fill_rq()
762 	bf = is->first;  in isdn_ppp_fill_rq()
763 	bl = is->last;  in isdn_ppp_fill_rq()
769 		is->first = bf;  in isdn_ppp_fill_rq()
774 	is->last = bl->next;  in isdn_ppp_fill_rq()
775 	spin_unlock_irqrestore(&is->buflock, flags);  in isdn_ppp_fill_rq()
776 	wake_up_interruptible(&is->wq);  in isdn_ppp_fill_rq()
788 	struct ippp_struct *is;  in isdn_ppp_read()  local
793 	is = file->private_data;  in isdn_ppp_read()
795 	if (!(is->state & IPPP_OPEN))  in isdn_ppp_read()
801 	spin_lock_irqsave(&is->buflock, flags);  in isdn_ppp_read()
802 	b = is->first->next;  in isdn_ppp_read()
805 		spin_unlock_irqrestore(&is->buflock, flags);  in isdn_ppp_read()
811 	is->first = b;  in isdn_ppp_read()
813 	spin_unlock_irqrestore(&is->buflock, flags);  in isdn_ppp_read()
829 	struct ippp_struct *is;  in isdn_ppp_write()  local
833 	is = file->private_data;  in isdn_ppp_write()
835 	if (!(is->state & IPPP_CONNECT))  in isdn_ppp_write()
838 	lp = is->lp;  in isdn_ppp_write()
880 			if (is->debug & 0x40) {  in isdn_ppp_write()
882 				isdn_ppp_frame_log("xmit", skb->data, skb->len, 32, is->unit, lp->ppp_slot);  in isdn_ppp_write()
948 static int isdn_ppp_skip_ac(struct ippp_struct *is, struct sk_buff *skb)  in isdn_ppp_skip_ac()  argument
963 		if (is->pppcfg & SC_REJ_COMP_AC)  in isdn_ppp_skip_ac()
1000 	struct ippp_struct *is;  in isdn_ppp_receive()  local
1013 	is = ippp_table[slot];  in isdn_ppp_receive()
1015 	if (is->debug & 0x4) {  in isdn_ppp_receive()
1017 		       (long)is, (long)lp, lp->ppp_slot, is->unit, (int)skb->len);  in isdn_ppp_receive()
1018 		isdn_ppp_frame_log("receive", skb->data, skb->len, 32, is->unit, lp->ppp_slot);  in isdn_ppp_receive()
1021 	if (isdn_ppp_skip_ac(is, skb) < 0) {  in isdn_ppp_receive()
1032 	if (is->compflags & SC_LINK_DECOMP_ON) {  in isdn_ppp_receive()
1033 		skb = isdn_ppp_decompress(skb, is, NULL, &proto);  in isdn_ppp_receive()
1038 	if (!(is->mpppcfg & SC_REJ_MP_PROT)) { // we agreed to receive MPPP  in isdn_ppp_receive()
1057 	struct ippp_struct *is, *mis;  in isdn_ppp_push_higher()  local
1067 	is = ippp_table[slot];  in isdn_ppp_push_higher()
1080 	if (is->debug & 0x10) {  in isdn_ppp_push_higher()
1082 		isdn_ppp_frame_log("rpush", skb->data, skb->len, 32, is->unit, lp->ppp_slot);  in isdn_ppp_push_higher()
1085 		skb = isdn_ppp_decompress(skb, is, mis, &proto);  in isdn_ppp_push_higher()
1091 		if (is->debug & 0x20)  in isdn_ppp_push_higher()
1096 		if (is->debug & 0x20)  in isdn_ppp_push_higher()
1106 		if (is->debug & 0x20)  in isdn_ppp_push_higher()
1120 		if (is->debug & 0x20)  in isdn_ppp_push_higher()
1178 	if (is->pass_filter  in isdn_ppp_push_higher()
1179 	    && BPF_PROG_RUN(is->pass_filter, skb) == 0) {  in isdn_ppp_push_higher()
1180 		if (is->debug & 0x2)  in isdn_ppp_push_higher()
1185 	if (!(is->active_filter  in isdn_ppp_push_higher()
1186 	      && BPF_PROG_RUN(is->active_filter, skb) == 0)) {  in isdn_ppp_push_higher()
1187 		if (is->debug & 0x2)  in isdn_ppp_push_higher()
1490 	struct ippp_struct *is = ippp_table[lp->ppp_slot];  in isdn_ppp_autodial_filter()  local
1521 	drop |= is->pass_filter  in isdn_ppp_autodial_filter()
1522 		&& BPF_PROG_RUN(is->pass_filter, skb) == 0;  in isdn_ppp_autodial_filter()
1523 	drop |= is->active_filter  in isdn_ppp_autodial_filter()
1524 		&& BPF_PROG_RUN(is->active_filter, skb) == 0;  in isdn_ppp_autodial_filter()
1577 	struct ippp_struct *is;  in isdn_ppp_mp_init()  local
1585 	is = ippp_table[lp->ppp_slot];  in isdn_ppp_mp_init()
1591 		is->mp_seqno = 0;  in isdn_ppp_mp_init()
1601 	is->last_link_seqno = 0;  in isdn_ppp_mp_init()
1617 	struct ippp_struct *is;  in isdn_ppp_mp_receive()  local
1638 	is = ippp_table[slot];  in isdn_ppp_mp_receive()
1642 	if (is->debug & 0x8)  in isdn_ppp_mp_receive()
1645 	newseq = isdn_ppp_mp_get_seq(is->mpppcfg & SC_IN_SHORT_SEQ,  in isdn_ppp_mp_receive()
1646 				     skb, is->last_link_seqno);  in isdn_ppp_mp_receive()
1664 	is->last_link_seqno = minseq = newseq;  in isdn_ppp_mp_receive()
1961 isdn_ppp_bundle(struct ippp_struct *is, int unit)  in isdn_ppp_bundle()  argument
1978 	nlp = is->lp;  in isdn_ppp_bundle()
2182 static void isdn_ppp_ccp_kickup(struct ippp_struct *is)  in isdn_ppp_ccp_kickup()  argument
2184 	isdn_ppp_fill_rq(NULL, 0, PPP_COMP, is->lp->ppp_slot);  in isdn_ppp_ccp_kickup()
2222 static void isdn_ppp_ccp_xmit_reset(struct ippp_struct *is, int proto,  in isdn_ppp_ccp_xmit_reset()  argument
2230 	isdn_net_local *lp = is->lp;  in isdn_ppp_ccp_xmit_reset()
2243 	if (!(is->pppcfg & SC_COMP_AC)) {  in isdn_ppp_ccp_xmit_reset()
2267 	isdn_ppp_frame_log("ccp-xmit", skb->data, skb->len, 32, is->unit, lp->ppp_slot);  in isdn_ppp_ccp_xmit_reset()
2273 static struct ippp_ccp_reset *isdn_ppp_ccp_reset_alloc(struct ippp_struct *is)  in isdn_ppp_ccp_reset_alloc()  argument
2283 	is->reset = r;  in isdn_ppp_ccp_reset_alloc()
2288 static void isdn_ppp_ccp_reset_free(struct ippp_struct *is)  in isdn_ppp_ccp_reset_free()  argument
2293 	       is->reset);  in isdn_ppp_ccp_reset_free()
2295 		if (is->reset->rs[id]) {  in isdn_ppp_ccp_reset_free()
2296 			isdn_ppp_ccp_reset_free_state(is, (unsigned char)id);  in isdn_ppp_ccp_reset_free()
2299 	kfree(is->reset);  in isdn_ppp_ccp_reset_free()
2300 	is->reset = NULL;  in isdn_ppp_ccp_reset_free()
2304 static void isdn_ppp_ccp_reset_free_state(struct ippp_struct *is,  in isdn_ppp_ccp_reset_free_state()  argument
2309 	if (is->reset->rs[id]) {  in isdn_ppp_ccp_reset_free_state()
2311 		rs = is->reset->rs[id];  in isdn_ppp_ccp_reset_free_state()
2315 		is->reset->rs[id] = NULL;  in isdn_ppp_ccp_reset_free_state()
2340 			isdn_ppp_ccp_reset_free_state(rs->is, rs->id);  in isdn_ppp_ccp_timer_callback()
2346 		isdn_ppp_ccp_xmit_reset(rs->is, PPP_CCP, CCP_RESETREQ, rs->id,  in isdn_ppp_ccp_timer_callback()
2358 static struct ippp_ccp_reset_state *isdn_ppp_ccp_reset_alloc_state(struct ippp_struct *is,  in isdn_ppp_ccp_reset_alloc_state()  argument
2362 	if (is->reset->rs[id]) {  in isdn_ppp_ccp_reset_alloc_state()
2371 		rs->is = is;  in isdn_ppp_ccp_reset_alloc_state()
2376 		is->reset->rs[id] = rs;  in isdn_ppp_ccp_reset_alloc_state()
2384 static void isdn_ppp_ccp_reset_trans(struct ippp_struct *is,  in isdn_ppp_ccp_reset_trans()  argument
2398 			if (is->reset->rs[rp->id]) {  in isdn_ppp_ccp_reset_trans()
2402 				rs = is->reset->rs[rp->id];  in isdn_ppp_ccp_reset_trans()
2416 				rs = isdn_ppp_ccp_reset_alloc_state(is, rp->id);  in isdn_ppp_ccp_reset_trans()
2429 				isdn_ppp_ccp_xmit_reset(is, PPP_CCP,  in isdn_ppp_ccp_reset_trans()
2445 		if (is->reset->rs[is->reset->lastid]) {  in isdn_ppp_ccp_reset_trans()
2449 			rs = is->reset->rs[is->reset->lastid];  in isdn_ppp_ccp_reset_trans()
2461 			       " %d to be started\n", is->reset->lastid);  in isdn_ppp_ccp_reset_trans()
2462 			rs = isdn_ppp_ccp_reset_alloc_state(is,  in isdn_ppp_ccp_reset_trans()
2463 							    is->reset->lastid);  in isdn_ppp_ccp_reset_trans()
2475 			isdn_ppp_ccp_xmit_reset(is, PPP_CCP, CCP_RESETREQ,  in isdn_ppp_ccp_reset_trans()
2487 static void isdn_ppp_ccp_reset_ack_rcvd(struct ippp_struct *is,  in isdn_ppp_ccp_reset_ack_rcvd()  argument
2490 	struct ippp_ccp_reset_state *rs = is->reset->rs[id];  in isdn_ppp_ccp_reset_ack_rcvd()
2506 		isdn_ppp_ccp_reset_free_state(is, id);  in isdn_ppp_ccp_reset_ack_rcvd()
2512 	is->reset->lastid++;  in isdn_ppp_ccp_reset_ack_rcvd()
2527 static struct sk_buff *isdn_ppp_decompress(struct sk_buff *skb, struct ippp_struct *is, struct ippp…  in isdn_ppp_decompress()  argument
2540 		stat = is->link_decomp_stat;  in isdn_ppp_decompress()
2541 		ipc = is->link_decompressor;  in isdn_ppp_decompress()
2542 		ri = is;  in isdn_ppp_decompress()
2564 		skb_out = dev_alloc_skb(is->mru + PPP_HDRLEN);  in isdn_ppp_decompress()
2611 					 struct ippp_struct *is, struct ippp_struct *master, int type)  in isdn_ppp_compress()  argument
2629 			compressor = is->compressor;  in isdn_ppp_compress()
2630 			stat = is->comp_stat;  in isdn_ppp_compress()
2673 	struct ippp_struct *is;  in isdn_ppp_receive_ccp()  local
2686 	is = ippp_table[lp->ppp_slot];  in isdn_ppp_receive_ccp()
2687 	isdn_ppp_frame_log("ccp-rcv", skb->data, skb->len, 32, is->unit, lp->ppp_slot);  in isdn_ppp_receive_ccp()
2698 		mis = is;  in isdn_ppp_receive_ccp()
2702 		if (is->debug & 0x10)  in isdn_ppp_receive_ccp()
2707 			is->compflags &= ~SC_LINK_COMP_ON;  in isdn_ppp_receive_ccp()
2711 		if (is->debug & 0x10)  in isdn_ppp_receive_ccp()
2716 			is->compflags &= ~(SC_LINK_DECOMP_ON | SC_LINK_COMP_ON);  in isdn_ppp_receive_ccp()
2720 		if (is->debug & 0x10)  in isdn_ppp_receive_ccp()
2727 			if (!is->decompressor)  in isdn_ppp_receive_ccp()
2729 			is->compflags |= SC_LINK_DECOMP_ON;  in isdn_ppp_receive_ccp()
2753 			isdn_ppp_ccp_reset_ack_rcvd(is, skb->data[1]);  in isdn_ppp_receive_ccp()
2754 			if (is->link_decompressor && is->link_decomp_stat)  in isdn_ppp_receive_ccp()
2755 				is->link_decompressor->  in isdn_ppp_receive_ccp()
2756 					reset(is->link_decomp_stat,  in isdn_ppp_receive_ccp()
2762 			is->compflags &= ~SC_LINK_DECOMP_DISCARD;  in isdn_ppp_receive_ccp()
2786 			if (is->link_compressor && is->link_comp_stat)  in isdn_ppp_receive_ccp()
2787 				is->link_compressor->  in isdn_ppp_receive_ccp()
2788 					reset(is->link_comp_stat,  in isdn_ppp_receive_ccp()
2799 				isdn_ppp_ccp_xmit_reset(is, proto, CCP_RESETACK,  in isdn_ppp_receive_ccp()
2811 			isdn_ppp_ccp_xmit_reset(is, proto, CCP_RESETACK,  in isdn_ppp_receive_ccp()
2849 	struct ippp_struct *mis, *is;  in isdn_ppp_send_ccp()  local
2860 	is = ippp_table[slot];  in isdn_ppp_send_ccp()
2863 	if (!(is->pppcfg & SC_COMP_AC) && data[0] == 0xff && data[1] == 0x03) {  in isdn_ppp_send_ccp()
2874 	isdn_ppp_frame_log("ccp-xmit", skb->data, skb->len, 32, is->unit, lp->ppp_slot);  in isdn_ppp_send_ccp()
2885 		mis = is;  in isdn_ppp_send_ccp()
2886 	if (mis != is)  in isdn_ppp_send_ccp()
2891 		if (is->debug & 0x10)  in isdn_ppp_send_ccp()
2894 			is->compflags &= ~SC_DECOMP_ON;  in isdn_ppp_send_ccp()
2896 			is->compflags &= ~SC_LINK_DECOMP_ON;  in isdn_ppp_send_ccp()
2900 		if (is->debug & 0x10)  in isdn_ppp_send_ccp()
2903 			is->compflags &= ~(SC_DECOMP_ON | SC_COMP_ON);  in isdn_ppp_send_ccp()
2905 			is->compflags &= ~(SC_LINK_DECOMP_ON | SC_LINK_COMP_ON);  in isdn_ppp_send_ccp()
2909 		if (is->debug & 0x10)  in isdn_ppp_send_ccp()
2912 			if (!is->compressor)  in isdn_ppp_send_ccp()
2914 			is->compflags |= SC_COMP_ON;  in isdn_ppp_send_ccp()
2916 			if (!is->compressor)  in isdn_ppp_send_ccp()
2918 			is->compflags |= SC_LINK_COMP_ON;  in isdn_ppp_send_ccp()
2923 		if (is->debug & 0x10)  in isdn_ppp_send_ccp()
2928 			if (is->compressor && is->comp_stat)  in isdn_ppp_send_ccp()
2929 				is->compressor->reset(is->comp_stat, 0, 0,  in isdn_ppp_send_ccp()
2931 			is->compflags &= ~SC_COMP_DISCARD;  in isdn_ppp_send_ccp()
2934 			if (is->link_compressor && is->link_comp_stat)  in isdn_ppp_send_ccp()
2935 				is->link_compressor->reset(is->link_comp_stat,  in isdn_ppp_send_ccp()
2937 			is->compflags &= ~SC_LINK_COMP_DISCARD;  in isdn_ppp_send_ccp()
2970 static int isdn_ppp_set_compressor(struct ippp_struct *is, struct isdn_ppp_comp_data *data)  in isdn_ppp_set_compressor()  argument
2977 	if (is->debug & 0x10)  in isdn_ppp_set_compressor()
2978 		printk(KERN_DEBUG "[%d] Set %s type %d\n", is->unit,  in isdn_ppp_set_compressor()
2985 	if (!(data->flags & IPPP_COMP_FLAG_XMIT) && !is->reset) {  in isdn_ppp_set_compressor()
2995 				ret = ipc->init(stat, data, is->unit, 0);  in isdn_ppp_set_compressor()
3010 					if (is->link_comp_stat)  in isdn_ppp_set_compressor()
3011 						is->link_compressor->free(is->link_comp_stat);  in isdn_ppp_set_compressor()
3012 					is->link_comp_stat = stat;  in isdn_ppp_set_compressor()
3013 					is->link_compressor = ipc;  in isdn_ppp_set_compressor()
3016 					if (is->comp_stat)  in isdn_ppp_set_compressor()
3017 						is->compressor->free(is->comp_stat);  in isdn_ppp_set_compressor()
3018 					is->comp_stat = stat;  in isdn_ppp_set_compressor()
3019 					is->compressor = ipc;  in isdn_ppp_set_compressor()
3024 					if (is->link_decomp_stat)  in isdn_ppp_set_compressor()
3025 						is->link_decompressor->free(is->link_decomp_stat);  in isdn_ppp_set_compressor()
3026 					is->link_decomp_stat = stat;  in isdn_ppp_set_compressor()
3027 					is->link_decompressor = ipc;  in isdn_ppp_set_compressor()
3030 					if (is->decomp_stat)  in isdn_ppp_set_compressor()
3031 						is->decompressor->free(is->decomp_stat);  in isdn_ppp_set_compressor()
3032 					is->decomp_stat = stat;  in isdn_ppp_set_compressor()
3033 					is->decompressor = ipc;  in isdn_ppp_set_compressor()