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#ifndef __NET_STT_H
#define __NET_STT_H 1
#include <linux/kconfig.h>
#include <linux/errno.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0) && IS_ENABLED(CONFIG_NETFILTER)
#include <net/ip_tunnels.h>
#define OVS_STT
struct stthdr {
__u8 version;
__u8 flags;
__u8 l4_offset;
__u8 reserved;
__be16 mss;
__be16 vlan_tci;
__be64 key;
};
/* Padding after the end of the tunnel headers to provide alignment
* for inner packet IP header after 14 byte Ethernet header.
*/
#define STT_ETH_PAD 2
#define STT_BASE_HLEN (sizeof(struct stthdr) + STT_ETH_PAD)
#define STT_HEADER_LEN (sizeof(struct tcphdr) + STT_BASE_HLEN)
static inline struct stthdr *stt_hdr(const struct sk_buff *skb)
{
return (struct stthdr *)(skb_transport_header(skb) +
sizeof(struct tcphdr));
}
struct net_device *ovs_stt_dev_create_fb(struct net *net, const char *name,
u8 name_assign_type, u16 dst_port);
netdev_tx_t ovs_stt_xmit(struct sk_buff *skb);
int ovs_stt_init_module(void);
void ovs_stt_cleanup_module(void);
#else
static inline int ovs_stt_init_module(void)
{
return 0;
}
static inline void ovs_stt_cleanup_module(void)
{}
static inline struct net_device *ovs_stt_dev_create_fb(struct net *net, const char *name,
u8 name_assign_type, u16 dst_port)
{
return ERR_PTR(-EOPNOTSUPP);
}
static inline netdev_tx_t ovs_stt_xmit(struct sk_buff *skb)
{
BUG();
return NETDEV_TX_OK;
}
#endif
#define stt_dev_create_fb ovs_stt_dev_create_fb
#define stt_init_module ovs_stt_init_module
#define stt_cleanup_module ovs_stt_cleanup_module
#define stt_fill_metadata_dst ovs_stt_fill_metadata_dst
int ovs_stt_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb);
#endif /*ifdef__NET_STT_H */
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