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
853 			proto = PPP_PROTOCOL(protobuf);  in isdn_ppp_write()
854 			if (proto != PPP_LCP)  in isdn_ppp_write()
889 			proto = PPP_PROTOCOL(cpy_buf);  in isdn_ppp_write()
890 			if (proto != PPP_LCP)  in isdn_ppp_write()
989 	int proto;  in isdn_ppp_strip_proto()  local
996 		proto = skb->data[0];  in isdn_ppp_strip_proto()
1001 		proto = ((int) skb->data[0] << 8) + skb->data[1];  in isdn_ppp_strip_proto()
1004 	return proto;  in isdn_ppp_strip_proto()
1015 	int proto;  in isdn_ppp_receive()  local
1038 	proto = isdn_ppp_strip_proto(skb);  in isdn_ppp_receive()
1039 	if (proto < 0) {  in isdn_ppp_receive()
1046 		skb = isdn_ppp_decompress(skb, is, NULL, &proto);  in isdn_ppp_receive()
1052 		if (proto == PPP_MP) {  in isdn_ppp_receive()
1058 	isdn_ppp_push_higher(net_dev, lp, skb, proto);  in isdn_ppp_receive()
1067 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
1094 		printk(KERN_DEBUG "push, skb %d %04x\n", (int) skb->len, proto);  in isdn_ppp_push_higher()
1098 		skb = isdn_ppp_decompress(skb, is, mis, &proto);  in isdn_ppp_push_higher()
1102 	switch (proto) {  in isdn_ppp_push_higher()
1166 		isdn_ppp_receive_ccp(net_dev, lp, skb, proto);  in isdn_ppp_push_higher()
1174 		isdn_ppp_fill_rq(skb->data, skb->len, proto, lp->ppp_slot);	/* push data to pppd device */  in isdn_ppp_push_higher()
1261 	unsigned int proto = PPP_IP;     /* 0x21 */  in isdn_ppp_xmit()  local
1286 		proto = PPP_IP;  in isdn_ppp_xmit()
1289 		proto = PPP_IPX;	/* untested */  in isdn_ppp_xmit()
1334 		*p = htons(proto);  in isdn_ppp_xmit()
1361 …if (proto == PPP_IP && ipts->pppcfg & SC_COMP_TCP) {	/* ipts here? probably yes, but check this ag…  in isdn_ppp_xmit()
1400 				proto = PPP_VJC_COMP;  in isdn_ppp_xmit()
1404 					proto = PPP_VJC_UNCOMP;  in isdn_ppp_xmit()
1418 			skb = isdn_ppp_compress(skb, &proto, ipt, ipts, 0);  in isdn_ppp_xmit()
1425 		printk(KERN_DEBUG "xmit2 skb, len %d, proto %04x\n", (int) skb->len, proto);  in isdn_ppp_xmit()
1439 			data[2] = proto;	/* PID compression */  in isdn_ppp_xmit()
1448 			data[4] = proto;	/* PID compression */  in isdn_ppp_xmit()
1450 		proto = PPP_MP; /* MP Protocol, 0x003d */  in isdn_ppp_xmit()
1458 		skb = isdn_ppp_compress(skb, &proto, ipt, ipts, 1);  in isdn_ppp_xmit()
1460 	if ((ipt->pppcfg & SC_COMP_PROT) && (proto <= 0xff)) {  in isdn_ppp_xmit()
1464 		data[0] = proto & 0xff;  in isdn_ppp_xmit()
1470 		data[0] = (proto >> 8) & 0xff;  in isdn_ppp_xmit()
1471 		data[1] = proto & 0xff;  in isdn_ppp_xmit()
1504 	u_int16_t proto;  in isdn_ppp_autodial_filter()  local
1509 		proto = PPP_IP;  in isdn_ppp_autodial_filter()
1512 		proto = PPP_IPX;  in isdn_ppp_autodial_filter()
1531 		*p = htons(proto);  in isdn_ppp_autodial_filter()
1910 	int proto;  in isdn_ppp_mp_reassembly()  local
1955 	proto = isdn_ppp_strip_proto(skb);  in isdn_ppp_mp_reassembly()
1956 	isdn_ppp_push_higher(net_dev, lp, skb, proto);  in isdn_ppp_mp_reassembly()
2235 static void isdn_ppp_ccp_xmit_reset(struct ippp_struct *is, int proto,  in isdn_ppp_ccp_xmit_reset()  argument
2264 	*p++ = (proto >> 8);  in isdn_ppp_ccp_xmit_reset()
2265 	*p++ = (proto & 0xff);  in isdn_ppp_ccp_xmit_reset()
2541 					   int *proto)  in isdn_ppp_decompress()  argument
2569 	if ((master && *proto == PPP_COMP) || (!master && *proto == PPP_COMPFRAG)) {  in isdn_ppp_decompress()
2602 		*proto = isdn_ppp_strip_proto(skb_out);  in isdn_ppp_decompress()
2603 		if (*proto < 0) {  in isdn_ppp_decompress()
2611 		ipc->incomp(stat, skb, *proto);  in isdn_ppp_decompress()
2623 static struct sk_buff *isdn_ppp_compress(struct sk_buff *skb_in, int *proto,  in isdn_ppp_compress()  argument
2633 	if (*proto < 0 || *proto > 0x3fff) {  in isdn_ppp_compress()
2668 	ret = (compressor->compress)(stat, skb_in, skb_out, *proto);  in isdn_ppp_compress()
2675 	*proto = new_proto;  in isdn_ppp_compress()
2684 				 struct sk_buff *skb, int proto)  in isdn_ppp_receive_ccp()  argument
2717 		if (proto == PPP_CCP)  in isdn_ppp_receive_ccp()
2726 		if (proto == PPP_CCP)  in isdn_ppp_receive_ccp()
2735 		if (proto == PPP_CCP) {  in isdn_ppp_receive_ccp()
2751 		if (proto == PPP_CCP) {  in isdn_ppp_receive_ccp()
2789 		if (proto == PPP_CCP) {  in isdn_ppp_receive_ccp()
2812 				isdn_ppp_ccp_xmit_reset(is, proto, CCP_RESETACK,  in isdn_ppp_receive_ccp()
2824 			isdn_ppp_ccp_xmit_reset(is, proto, CCP_RESETACK,  in isdn_ppp_receive_ccp()
2863 	int proto, slot = lp->ppp_slot;  in isdn_ppp_send_ccp()  local
2882 	proto = ((int)data[0]<<8) + data[1];  in isdn_ppp_send_ccp()
2883 	if (proto != PPP_CCP && proto != PPP_CCPFRAG)  in isdn_ppp_send_ccp()
2906 		if (proto == PPP_CCP)  in isdn_ppp_send_ccp()
2915 		if (proto == PPP_CCP)  in isdn_ppp_send_ccp()
2924 		if (proto == PPP_CCP) {  in isdn_ppp_send_ccp()
2939 		if (proto == PPP_CCP) {  in isdn_ppp_send_ccp()