[mirror_ubuntu-bionic-kernel.git] / include / net / tun_proto.h

#ifndef __NET_TUN_PROTO_H
#define __NET_TUN_PROTO_H

#include <linux/kernel.h>

/* One byte protocol values as defined by VXLAN-GPE and NSH. These will
 * hopefully get a shared IANA registry.
 */
#define TUN_P_IPV4      0x01
#define TUN_P_IPV6      0x02
#define TUN_P_ETHERNET  0x03
#define TUN_P_NSH       0x04
#define TUN_P_MPLS_UC   0x05

static inline __be16 tun_p_to_eth_p(u8 proto)
{
	switch (proto) {
	case TUN_P_IPV4:
		return htons(ETH_P_IP);
	case TUN_P_IPV6:
		return htons(ETH_P_IPV6);
	case TUN_P_ETHERNET:
		return htons(ETH_P_TEB);
	case TUN_P_NSH:
		return htons(ETH_P_NSH);
	case TUN_P_MPLS_UC:
		return htons(ETH_P_MPLS_UC);
	}
	return 0;
}

static inline u8 tun_p_from_eth_p(__be16 proto)
{
	switch (proto) {
	case htons(ETH_P_IP):
		return TUN_P_IPV4;
	case htons(ETH_P_IPV6):
		return TUN_P_IPV6;
	case htons(ETH_P_TEB):
		return TUN_P_ETHERNET;
	case htons(ETH_P_NSH):
		return TUN_P_NSH;
	case htons(ETH_P_MPLS_UC):
		return TUN_P_MPLS_UC;
	}
	return 0;
}

#endif
Commit	Line	Data
fa20e0e3 JB	1	#ifndef __NET_TUN_PROTO_H
	2	#define __NET_TUN_PROTO_H
	3
	4	#include <linux/kernel.h>
	5
	6	/* One byte protocol values as defined by VXLAN-GPE and NSH. These will
	7	* hopefully get a shared IANA registry.
	8	*/
	9	#define TUN_P_IPV4 0x01
	10	#define TUN_P_IPV6 0x02
	11	#define TUN_P_ETHERNET 0x03
	12	#define TUN_P_NSH 0x04
	13	#define TUN_P_MPLS_UC 0x05
	14
	15	static inline __be16 tun_p_to_eth_p(u8 proto)
	16	{
	17	switch (proto) {
	18	case TUN_P_IPV4:
	19	return htons(ETH_P_IP);
	20	case TUN_P_IPV6:
	21	return htons(ETH_P_IPV6);
	22	case TUN_P_ETHERNET:
	23	return htons(ETH_P_TEB);
	24	case TUN_P_NSH:
	25	return htons(ETH_P_NSH);
	26	case TUN_P_MPLS_UC:
	27	return htons(ETH_P_MPLS_UC);
	28	}
	29	return 0;
	30	}
	31
	32	static inline u8 tun_p_from_eth_p(__be16 proto)
	33	{
	34	switch (proto) {
	35	case htons(ETH_P_IP):
	36	return TUN_P_IPV4;
	37	case htons(ETH_P_IPV6):
	38	return TUN_P_IPV6;
	39	case htons(ETH_P_TEB):
	40	return TUN_P_ETHERNET;
	41	case htons(ETH_P_NSH):
	42	return TUN_P_NSH;
	43	case htons(ETH_P_MPLS_UC):
	44	return TUN_P_MPLS_UC;
	45	}
	46	return 0;
	47	}
	48
	49	#endif