linux/include/net/fou.h

#ifndef __NET_FOU_H
#define __NET_FOU_H

#include <linux/skbuff.h>

#include <net/flow.h>
#include <net/gue.h>
#include <net/ip_tunnels.h>
#include <net/udp.h>

size_t fou_encap_hlen(struct ip_tunnel_encap *e);
static size_t gue_encap_hlen(struct ip_tunnel_encap *e);

int __fou_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
		       u8 *protocol, __be16 *sport, int type);
int __gue_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
		       u8 *protocol, __be16 *sport, int type);

#endif
net: Move fou_build_header into fou.c and refactor Move fou_build_header out of ip_tunnel.c and into fou.c splitting it up into fou_build_header, gue_build_header, and fou_build_udp. This allows for other users for TX of FOU or GUE. Change ip_tunnel_encap to call fou_build_header or gue_build_header based on the tunnel encapsulation type. Similarly, added fou_encap_hlen and gue_encap_hlen functions which are called by ip_encap_hlen. New net/fou.h has prototypes and defines for this. Added NET_FOU_IP_TUNNELS configuration. When this is set, IP tunnels can use FOU/GUE and fou module is also selected. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> 2014-11-05 01:06:51 +08:00			`#ifndef __NET_FOU_H`
			`#define __NET_FOU_H`

			`#include <linux/skbuff.h>`

			`#include <net/flow.h>`
			`#include <net/gue.h>`
			`#include <net/ip_tunnels.h>`
			`#include <net/udp.h>`

ip_tunnel: Ops registration for secondary encap (fou, gue) Instead of calling fou and gue functions directly from ip_tunnel use ops for these that were previously registered. This patch adds the logic to add and remove encapsulation operations for ip_tunnel, and modified fou (and gue) to register with ip_tunnels. This patch also addresses a circular dependency between ip_tunnel and fou that was causing link errors when CONFIG_NET_IP_TUNNEL=y and CONFIG_NET_FOU=m. References to fou an gue have been removed from ip_tunnel.c Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> 2014-11-13 03:54:09 +08:00			`size_t fou_encap_hlen(struct ip_tunnel_encap *e);`
			`static size_t gue_encap_hlen(struct ip_tunnel_encap *e);`

fou: Split out {fou,gue}_build_header Create __fou_build_header and __gue_build_header. These implement the protocol generic parts of building the fou and gue header. fou_build_header and gue_build_header implement the IPv4 specific functions and call the __*_build_header functions. Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net> 2016-05-19 00:06:15 +08:00			`int __fou_build_header(struct sk_buff skb, struct ip_tunnel_encap e,`
			`u8 protocol, __be16 sport, int type);`
			`int __gue_build_header(struct sk_buff skb, struct ip_tunnel_encap e,`
			`u8 protocol, __be16 sport, int type);`
net: Move fou_build_header into fou.c and refactor Move fou_build_header out of ip_tunnel.c and into fou.c splitting it up into fou_build_header, gue_build_header, and fou_build_udp. This allows for other users for TX of FOU or GUE. Change ip_tunnel_encap to call fou_build_header or gue_build_header based on the tunnel encapsulation type. Similarly, added fou_encap_hlen and gue_encap_hlen functions which are called by ip_encap_hlen. New net/fou.h has prototypes and defines for this. Added NET_FOU_IP_TUNNELS configuration. When this is set, IP tunnels can use FOU/GUE and fou module is also selected. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> 2014-11-05 01:06:51 +08:00
			`#endif`