29 static int isdn_ppp_fill_rq(unsigned char *buf, int len, int proto, int slot);
32 				 struct sk_buff *skb, int proto);
36 					   struct ippp_struct *, struct ippp_struct *, int *proto);
38 				 struct sk_buff *skb, int proto);
39 static struct sk_buff *isdn_ppp_compress(struct sk_buff *skb_in, int *proto,
46 static void isdn_ppp_ccp_xmit_reset(struct ippp_struct *is, int proto,
733 isdn_ppp_fill_rq(unsigned char *buf, int len, int proto, int slot)  in isdn_ppp_fill_rq()  argument
757 	nbuf[2] = proto >> 8;  in isdn_ppp_fill_rq()
758 	nbuf[3] = proto & 0xff;  in isdn_ppp_fill_rq()
830 	int proto;  in isdn_ppp_write()  local
851 		proto = PPP_PROTOCOL(protobuf);  in isdn_ppp_write()
852 		if (proto != PPP_LCP)  in isdn_ppp_write()
976 	int proto;  in isdn_ppp_strip_proto()  local
983 		proto = skb->data[0];  in isdn_ppp_strip_proto()
988 		proto = ((int) skb->data[0] << 8) + skb->data[1];  in isdn_ppp_strip_proto()
991 	return proto;  in isdn_ppp_strip_proto()
1002 	int proto;  in isdn_ppp_receive()  local
1025 	proto = isdn_ppp_strip_proto(skb);  in isdn_ppp_receive()
1026 	if (proto < 0) {  in isdn_ppp_receive()
1033 		skb = isdn_ppp_decompress(skb, is, NULL, &proto);  in isdn_ppp_receive()
1039 		if (proto == PPP_MP) {  in isdn_ppp_receive()
1045 	isdn_ppp_push_higher(net_dev, lp, skb, proto);  in isdn_ppp_receive()
1054 isdn_ppp_push_higher(isdn_net_dev *net_dev, isdn_net_local *lp, struct sk_buff *skb, int proto)  in isdn_ppp_push_higher()  argument
1081 		printk(KERN_DEBUG "push, skb %d %04x\n", (int) skb->len, proto);  in isdn_ppp_push_higher()
1085 		skb = isdn_ppp_decompress(skb, is, mis, &proto);  in isdn_ppp_push_higher()
1089 	switch (proto) {  in isdn_ppp_push_higher()
1153 		isdn_ppp_receive_ccp(net_dev, lp, skb, proto);  in isdn_ppp_push_higher()
1161 		isdn_ppp_fill_rq(skb->data, skb->len, proto, lp->ppp_slot);	/* push data to pppd device */  in isdn_ppp_push_higher()
1248 	unsigned int proto = PPP_IP;     /* 0x21 */  in isdn_ppp_xmit()  local
1273 		proto = PPP_IP;  in isdn_ppp_xmit()
1276 		proto = PPP_IPX;	/* untested */  in isdn_ppp_xmit()
1321 		*p = htons(proto);  in isdn_ppp_xmit()
1348 …if (proto == PPP_IP && ipts->pppcfg & SC_COMP_TCP) {	/* ipts here? probably yes, but check this ag…  in isdn_ppp_xmit()
1387 				proto = PPP_VJC_COMP;  in isdn_ppp_xmit()
1391 					proto = PPP_VJC_UNCOMP;  in isdn_ppp_xmit()
1405 			skb = isdn_ppp_compress(skb, &proto, ipt, ipts, 0);  in isdn_ppp_xmit()
1412 		printk(KERN_DEBUG "xmit2 skb, len %d, proto %04x\n", (int) skb->len, proto);  in isdn_ppp_xmit()
1426 			data[2] = proto;	/* PID compression */  in isdn_ppp_xmit()
1435 			data[4] = proto;	/* PID compression */  in isdn_ppp_xmit()
1437 		proto = PPP_MP; /* MP Protocol, 0x003d */  in isdn_ppp_xmit()
1445 		skb = isdn_ppp_compress(skb, &proto, ipt, ipts, 1);  in isdn_ppp_xmit()
1447 	if ((ipt->pppcfg & SC_COMP_PROT) && (proto <= 0xff)) {  in isdn_ppp_xmit()
1451 		data[0] = proto & 0xff;  in isdn_ppp_xmit()
1457 		data[0] = (proto >> 8) & 0xff;  in isdn_ppp_xmit()
1458 		data[1] = proto & 0xff;  in isdn_ppp_xmit()
1491 	u_int16_t proto;  in isdn_ppp_autodial_filter()  local
1496 		proto = PPP_IP;  in isdn_ppp_autodial_filter()
1499 		proto = PPP_IPX;  in isdn_ppp_autodial_filter()
1518 		*p = htons(proto);  in isdn_ppp_autodial_filter()
1897 	int proto;  in isdn_ppp_mp_reassembly()  local
1942 	proto = isdn_ppp_strip_proto(skb);  in isdn_ppp_mp_reassembly()
1943 	isdn_ppp_push_higher(net_dev, lp, skb, proto);  in isdn_ppp_mp_reassembly()
2222 static void isdn_ppp_ccp_xmit_reset(struct ippp_struct *is, int proto,  in isdn_ppp_ccp_xmit_reset()  argument
2251 	*p++ = (proto >> 8);  in isdn_ppp_ccp_xmit_reset()
2252 	*p++ = (proto & 0xff);  in isdn_ppp_ccp_xmit_reset()
2528 					   int *proto)  in isdn_ppp_decompress()  argument
2556 	if ((master && *proto == PPP_COMP) || (!master && *proto == PPP_COMPFRAG)) {  in isdn_ppp_decompress()
2589 		*proto = isdn_ppp_strip_proto(skb_out);  in isdn_ppp_decompress()
2590 		if (*proto < 0) {  in isdn_ppp_decompress()
2598 		ipc->incomp(stat, skb, *proto);  in isdn_ppp_decompress()
2610 static struct sk_buff *isdn_ppp_compress(struct sk_buff *skb_in, int *proto,  in isdn_ppp_compress()  argument
2620 	if (*proto < 0 || *proto > 0x3fff) {  in isdn_ppp_compress()
2655 	ret = (compressor->compress)(stat, skb_in, skb_out, *proto);  in isdn_ppp_compress()
2662 	*proto = new_proto;  in isdn_ppp_compress()
2671 				 struct sk_buff *skb, int proto)  in isdn_ppp_receive_ccp()  argument
2704 		if (proto == PPP_CCP)  in isdn_ppp_receive_ccp()
2713 		if (proto == PPP_CCP)  in isdn_ppp_receive_ccp()
2722 		if (proto == PPP_CCP) {  in isdn_ppp_receive_ccp()
2738 		if (proto == PPP_CCP) {  in isdn_ppp_receive_ccp()
2776 		if (proto == PPP_CCP) {  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()
2850 	int proto, slot = lp->ppp_slot;  in isdn_ppp_send_ccp()  local
2869 	proto = ((int)data[0]<<8) + data[1];  in isdn_ppp_send_ccp()
2870 	if (proto != PPP_CCP && proto != PPP_CCPFRAG)  in isdn_ppp_send_ccp()
2893 		if (proto == PPP_CCP)  in isdn_ppp_send_ccp()
2902 		if (proto == PPP_CCP)  in isdn_ppp_send_ccp()
2911 		if (proto == PPP_CCP) {  in isdn_ppp_send_ccp()
2926 		if (proto == PPP_CCP) {  in isdn_ppp_send_ccp()