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#ifndef __LINUX_GSO_WRAPPER_H
#define __LINUX_GSO_WRAPPER_H
#include <linux/version.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,12,0)
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <net/protocol.h>
#include "datapath.h"
struct ovs_gso_cb {
struct ovs_skb_cb dp_cb;
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,11,0)
__be16 inner_protocol;
#endif
u16 inner_network_header; /* Offset from
* inner_mac_header */
sk_buff_data_t inner_mac_header; /* Offset from skb->head */
void (*fix_segment)(struct sk_buff *);
};
#define OVS_GSO_CB(skb) ((struct ovs_gso_cb *)(skb)->cb)
#define skb_inner_network_header rpl_skb_inner_network_header
#ifdef NET_SKBUFF_DATA_USES_OFFSET
#define skb_inner_mac_header rpl_skb_inner_mac_header
static inline unsigned char *skb_inner_mac_header(const struct sk_buff *skb)
{
return skb->head + OVS_GSO_CB(skb)->inner_mac_header;
}
#else
#define skb_inner_mac_header rpl_skb_inner_mac_header
static inline unsigned char *skb_inner_mac_header(const struct sk_buff *skb)
{
return OVS_GSO_CB(skb)->inner_mac_header;
}
#endif
#define skb_inner_network_header rpl_skb_inner_network_header
static inline unsigned char *skb_inner_network_header(const struct sk_buff *skb)
{
return skb_inner_mac_header(skb) +
OVS_GSO_CB(skb)->inner_network_header;
}
#define skb_inner_network_offset rpl_skb_inner_network_offset
static inline int skb_inner_network_offset(const struct sk_buff *skb)
{
return skb_inner_network_header(skb) - skb->data;
}
#define skb_reset_inner_headers rpl_skb_reset_inner_headers
static inline void skb_reset_inner_headers(struct sk_buff *skb)
{
BUILD_BUG_ON(sizeof(struct ovs_gso_cb) > FIELD_SIZEOF(struct sk_buff, cb));
OVS_GSO_CB(skb)->inner_network_header = skb->network_header -
skb->mac_header;
OVS_GSO_CB(skb)->inner_mac_header = skb->mac_header;
OVS_GSO_CB(skb)->fix_segment = NULL;
}
#endif /* 3.12 */
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,16,0)
#define ip_local_out rpl_ip_local_out
int ip_local_out(struct sk_buff *skb);
#define skb_inner_mac_offset rpl_skb_inner_mac_offset
static inline int skb_inner_mac_offset(const struct sk_buff *skb)
{
return skb_inner_mac_header(skb) - skb->data;
}
#endif /* 3.16 */
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,11,0)
static inline void ovs_skb_init_inner_protocol(struct sk_buff *skb) {
OVS_GSO_CB(skb)->inner_protocol = htons(0);
}
static inline void ovs_skb_set_inner_protocol(struct sk_buff *skb,
__be16 ethertype) {
OVS_GSO_CB(skb)->inner_protocol = ethertype;
}
static inline __be16 ovs_skb_get_inner_protocol(struct sk_buff *skb)
{
return OVS_GSO_CB(skb)->inner_protocol;
}
#else
static inline void ovs_skb_init_inner_protocol(struct sk_buff *skb) {
/* Nothing to do. The inner_protocol is either zero or
* has been set to a value by another user.
* Either way it may be considered initialised.
*/
}
static inline void ovs_skb_set_inner_protocol(struct sk_buff *skb,
__be16 ethertype)
{
skb->inner_protocol = ethertype;
}
static inline __be16 ovs_skb_get_inner_protocol(struct sk_buff *skb)
{
return skb->inner_protocol;
}
#endif /* 3.11 */
#endif
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