mirror of
https://github.com/openvswitch/ovs
synced 2025-10-25 15:07:05 +00:00
7cbbd7adee
When the UDP tunnel compat code was written, it backported some functions that were slated to be in the next kernel release, then called 3.20. However, this was ultimately released as 4.0 instead. Signed-off-by: Jesse Gross <jesse@nicira.com> Reviewed-by: Simon Horman <simon.horman@netronome.com>
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
#ifndef __NET_UDP_TUNNEL_WRAPPER_H
|
|
#define __NET_UDP_TUNNEL_WRAPPER_H
|
|
|
|
#include <linux/version.h>
|
|
#include <linux/kconfig.h>
|
|
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)
|
|
#include_next <net/udp_tunnel.h>
|
|
|
|
static inline struct sk_buff *
|
|
rpl_udp_tunnel_handle_offloads(struct sk_buff *skb, bool udp_csum,
|
|
bool is_vxlan)
|
|
{
|
|
if (skb_is_gso(skb) && skb_is_encapsulated(skb)) {
|
|
kfree_skb(skb);
|
|
return ERR_PTR(-ENOSYS);
|
|
}
|
|
return udp_tunnel_handle_offloads(skb, udp_csum);
|
|
}
|
|
#define udp_tunnel_handle_offloads rpl_udp_tunnel_handle_offloads
|
|
|
|
#else
|
|
|
|
#include <net/ip_tunnels.h>
|
|
#include <net/udp.h>
|
|
|
|
struct udp_port_cfg {
|
|
u8 family;
|
|
|
|
/* Used only for kernel-created sockets */
|
|
union {
|
|
struct in_addr local_ip;
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
struct in6_addr local_ip6;
|
|
#endif
|
|
};
|
|
|
|
union {
|
|
struct in_addr peer_ip;
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
struct in6_addr peer_ip6;
|
|
#endif
|
|
};
|
|
|
|
__be16 local_udp_port;
|
|
__be16 peer_udp_port;
|
|
unsigned int use_udp_checksums:1,
|
|
use_udp6_tx_checksums:1,
|
|
use_udp6_rx_checksums:1;
|
|
};
|
|
|
|
#define udp_sock_create rpl_udp_sock_create
|
|
int rpl_udp_sock_create(struct net *net, struct udp_port_cfg *cfg,
|
|
struct socket **sockp);
|
|
|
|
typedef int (*udp_tunnel_encap_rcv_t)(struct sock *sk, struct sk_buff *skb);
|
|
typedef void (*udp_tunnel_encap_destroy_t)(struct sock *sk);
|
|
|
|
struct udp_tunnel_sock_cfg {
|
|
void *sk_user_data; /* user data used by encap_rcv call back */
|
|
/* Used for setting up udp_sock fields, see udp.h for details */
|
|
__u8 encap_type;
|
|
udp_tunnel_encap_rcv_t encap_rcv;
|
|
udp_tunnel_encap_destroy_t encap_destroy;
|
|
};
|
|
|
|
/* Setup the given (UDP) sock to receive UDP encapsulated packets */
|
|
#define setup_udp_tunnel_sock rpl_setup_udp_tunnel_sock
|
|
void rpl_setup_udp_tunnel_sock(struct net *net, struct socket *sock,
|
|
struct udp_tunnel_sock_cfg *sock_cfg);
|
|
|
|
/* Transmit the skb using UDP encapsulation. */
|
|
#define udp_tunnel_xmit_skb rpl_udp_tunnel_xmit_skb
|
|
int rpl_udp_tunnel_xmit_skb(struct rtable *rt, struct sk_buff *skb,
|
|
__be32 src, __be32 dst, __u8 tos, __u8 ttl,
|
|
__be16 df, __be16 src_port, __be16 dst_port,
|
|
bool xnet, bool nocheck);
|
|
|
|
|
|
#define udp_tunnel_sock_release rpl_udp_tunnel_sock_release
|
|
void rpl_udp_tunnel_sock_release(struct socket *sock);
|
|
|
|
void ovs_udp_gso(struct sk_buff *skb);
|
|
void ovs_udp_csum_gso(struct sk_buff *skb);
|
|
|
|
static inline struct sk_buff *udp_tunnel_handle_offloads(struct sk_buff *skb,
|
|
bool udp_csum,
|
|
bool is_vxlan)
|
|
{
|
|
int type = udp_csum ? SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;
|
|
void (*fix_segment)(struct sk_buff *);
|
|
|
|
if (!udp_csum)
|
|
fix_segment = ovs_udp_gso;
|
|
else
|
|
fix_segment = ovs_udp_csum_gso;
|
|
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
|
|
if (!is_vxlan)
|
|
type = 0;
|
|
#endif
|
|
|
|
return ovs_iptunnel_handle_offloads(skb, udp_csum, type, fix_segment);
|
|
}
|
|
|
|
#define udp_tunnel_encap_enable(sock) udp_encap_enable()
|
|
|
|
#endif /* Linux version < 4.0 */
|
|
#endif
|