#include <net/netns/generic.h>
#include "flow.h"
-#include "openvswitch/tunnel.h"
#include "vport.h"
-/*
- * The absolute minimum fragment size. Note that there are many other
- * definitions of the minimum MTU.
- */
-#define IP_MIN_MTU 68
-
-/*
- * One of these goes in struct tnl_ops and in tnl_find_port().
- * These values are in the same namespace as other TNL_T_* values, so
- * only the least significant 10 bits are available to define protocol
- * identifiers.
- */
-#define TNL_T_PROTO_GRE 0
-#define TNL_T_PROTO_GRE64 1
-#define TNL_T_PROTO_VXLAN 3
-#define TNL_T_PROTO_LISP 4
-
-/* These flags are only needed when calling tnl_find_port(). */
-#define TNL_T_KEY_EXACT (1 << 10)
-#define TNL_T_KEY_MATCH (1 << 11)
-
-/* Private flags not exposed to userspace in this form. */
-#define TNL_F_IN_KEY_MATCH (1 << 16) /* Store the key in tun_id to
- * match in flow table. */
-#define TNL_F_OUT_KEY_ACTION (1 << 17) /* Get the key from a SET_TUNNEL
- * action. */
-
-/* All public tunnel flags. */
-#define TNL_F_PUBLIC (TNL_F_CSUM | TNL_F_TOS_INHERIT | TNL_F_TTL_INHERIT | \
- TNL_F_DF_DEFAULT)
-
-/**
- * struct port_lookup_key - Tunnel port key, used as hash table key.
- * @in_key: Key to match on input, 0 for wildcard.
- * @net: Network namespace of the port.
- * @saddr: IPv4 source address to match, 0 to accept any source address.
- * @daddr: IPv4 destination of tunnel.
- * @tunnel_type: Set of TNL_T_* flags that define lookup.
- */
-struct port_lookup_key {
- __be64 in_key;
-#ifdef CONFIG_NET_NS
- struct net *net;
-#endif
- __be32 saddr;
- __be32 daddr;
- u32 tunnel_type;
-};
-
-#define PORT_KEY_LEN (offsetof(struct port_lookup_key, tunnel_type) + \
- FIELD_SIZEOF(struct port_lookup_key, tunnel_type))
-
-static inline struct net *port_key_get_net(const struct port_lookup_key *key)
-{
- return read_pnet(&key->net);
-}
-
-static inline void port_key_set_net(struct port_lookup_key *key, struct net *net)
-{
- write_pnet(&key->net, net);
-}
-
-/**
- * struct tnl_mutable_config - modifiable configuration for a tunnel.
- * @key: Used as key for tunnel port. Configured via OVS_TUNNEL_ATTR_*
- * attributes.
- * @rcu: RCU callback head for deferred destruction.
- * @tunnel_hlen: Tunnel header length.
- * @out_key: Key to use on output, 0 if this tunnel has no fixed output key.
- * @flags: TNL_F_* flags.
- * @tos: IPv4 TOS value to use for tunnel, 0 if no fixed TOS.
- * @ttl: IPv4 TTL value to use for tunnel, 0 if no fixed TTL.
- */
-struct tnl_mutable_config {
- struct port_lookup_key key;
- struct rcu_head rcu;
-
- /* Configured via OVS_TUNNEL_ATTR_* attributes. */
- __be64 out_key;
- u32 flags;
- u8 tos;
- u8 ttl;
- __be16 dst_port;
-
- /* Multicast configuration. */
- int mlink;
-};
-
struct tnl_ops {
- u32 tunnel_type; /* Put the TNL_T_PROTO_* type in here. */
u8 ipproto; /* The IP protocol for the tunnel. */
/*
* Returns the length of the tunnel header that will be added in
- * build_header() (i.e. excludes the IP header). Returns a negative
- * error code if the configuration is invalid.
+ * build_header() (i.e. excludes the IP header).
*/
- int (*hdr_len)(const struct tnl_mutable_config *,
- const struct ovs_key_ipv4_tunnel *);
+ int (*hdr_len)(const struct ovs_key_ipv4_tunnel *);
/*
- * Returns a linked list of SKBs with tunnel headers (multiple
- * packets may be generated in the event of fragmentation). Space
- * will have already been allocated at the start of the packet equal
- * to sizeof(struct iphdr) + value returned by hdr_len(). The IP
- * header will have already been constructed.
- */
- struct sk_buff *(*build_header)(const struct vport *,
- const struct tnl_mutable_config *,
- struct dst_entry *, struct sk_buff *,
- int tunnel_hlen);
+ * Builds header for given SKB. Space will have already been
+ * allocated at the start of the packet equal
+ * to sizeof(struct iphdr) + value returned by hdr_len().
+ */
+ void (*build_header)(const struct vport *, struct sk_buff *,
+ int tunnel_hlen);
};
struct tnl_vport {
struct rcu_head rcu;
- struct hlist_node hash_node;
+ __be16 dst_port;
char name[IFNAMSIZ];
const struct tnl_ops *tnl_ops;
-
- struct tnl_mutable_config __rcu *mutable;
};
struct vport *ovs_tnl_create(const struct vport_parms *, const struct vport_ops *,
const struct tnl_ops *);
void ovs_tnl_destroy(struct vport *);
-int ovs_tnl_set_options(struct vport *, struct nlattr *);
-int ovs_tnl_get_options(const struct vport *, struct sk_buff *);
-
const char *ovs_tnl_get_name(const struct vport *vport);
int ovs_tnl_send(struct vport *vport, struct sk_buff *skb);
void ovs_tnl_rcv(struct vport *vport, struct sk_buff *skb);
u16 ovs_tnl_get_src_port(struct sk_buff *skb);
-struct vport *ovs_tnl_find_port(struct net *net, __be32 saddr, __be32 daddr,
- __be64 key, int tunnel_type,
- const struct tnl_mutable_config **mutable);
-bool ovs_tnl_frag_needed(struct vport *vport,
- const struct tnl_mutable_config *mutable,
- struct sk_buff *skb, unsigned int mtu);
-void ovs_tnl_free_linked_skbs(struct sk_buff *skb);
-
-int ovs_tnl_init(void);
-void ovs_tnl_exit(void);
static inline struct tnl_vport *tnl_vport_priv(const struct vport *vport)
{
return vport_priv(vport);
sizeof(*tun_key) - OVS_TUNNEL_KEY_SIZE);
}
-static inline void tnl_get_param(const struct tnl_mutable_config *mutable,
- const struct ovs_key_ipv4_tunnel *tun_key,
- u32 *flags, __be64 *out_key)
-{
- if (tun_key->ipv4_dst) {
- *flags = 0;
-
- if (tun_key->tun_flags & OVS_TNL_F_KEY)
- *flags = TNL_F_OUT_KEY_ACTION;
- if (tun_key->tun_flags & OVS_TNL_F_CSUM)
- *flags |= TNL_F_CSUM;
- *out_key = tun_key->tun_id;
- } else {
- *flags = mutable->flags;
- if (mutable->flags & TNL_F_OUT_KEY_ACTION)
- *out_key = tun_key->tun_id;
- else
- *out_key = mutable->out_key;
- }
-}
-
#endif /* tunnel.h */
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