/*
- * Copyright (c) 2010 Nicira Networks.
- * Distributed under the terms of the GNU GPL version 2.
+ * Copyright (c) 2007-2012 Nicira, Inc.
*
- * Significant portions of this file may be copied from parts of the Linux
- * kernel, by Linus Torvalds and others.
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
*/
#ifndef TUNNEL_H
#define TUNNEL_H 1
-#include "openvswitch/tunnel.h"
-#include "table.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 your struct tnl_ops and in tnl_find_port().
- * These values are in the same namespace as other TNL_T_* values, so
- * you have only the first 10 bits to define protocol identifiers.
- */
-#define TNL_T_PROTO_GRE 0
-#define TNL_T_PROTO_CAPWAP 1
-
-/* You only need these flags when you are calling tnl_find_port(). */
-#define TNL_T_KEY_EXACT (1 << 10)
-#define TNL_T_KEY_MATCH (1 << 11)
-#define TNL_T_KEY_EITHER (TNL_T_KEY_EXACT | TNL_T_KEY_MATCH)
-
-struct tnl_mutable_config {
- struct rcu_head rcu;
+#include <linux/version.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
- unsigned char eth_addr[ETH_ALEN];
- unsigned int mtu;
- struct tnl_port_config port_config;
-
- /* Set of TNL_T_* flags that define the category for lookup. */
- u32 tunnel_type;
-
- int tunnel_hlen; /* Tunnel header length. */
-};
+#include "flow.h"
+#include "vport.h"
struct tnl_ops {
- /* Put your TNL_T_PROTO_* type in here. */
- u32 tunnel_type;
- u8 ipproto;
+ u8 ipproto; /* The IP protocol for the tunnel. */
/*
- * Returns the length of the tunnel header you will add in
- * build_header() (i.e. excludes the IP header). Returns a negative
- * error code if the configuration is invalid.
+ * Returns the length of the tunnel header that will be added in
+ * build_header() (i.e. excludes the IP header).
*/
- int (*hdr_len)(const struct tnl_port_config *);
-
+ 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)(struct sk_buff *,
- const struct vport *,
- const struct tnl_mutable_config *,
- struct dst_entry *);
+ * 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 tbl_node tbl_node;
+ __be16 dst_port;
char name[IFNAMSIZ];
const struct tnl_ops *tnl_ops;
-
- /* Protected by RCU. */
- struct tnl_mutable_config *mutable;
-
- atomic_t frag_id;
};
-int tnl_init(void);
-void tnl_exit(void);
-struct vport *tnl_create(const char *name, const void __user *config,
- const struct vport_ops *,
- const struct tnl_ops *);
-int tnl_modify(struct vport *, const void __user *config);
-int tnl_destroy(struct vport *);
-int tnl_set_mtu(struct vport *vport, int mtu);
-int tnl_set_addr(struct vport *vport, const unsigned char *addr);
-const char *tnl_get_name(const struct vport *vport);
-const unsigned char *tnl_get_addr(const struct vport *vport);
-int tnl_get_mtu(const struct vport *vport);
-int tnl_send(struct vport *vport, struct sk_buff *skb);
-void tnl_rcv(struct vport *vport, struct sk_buff *skb);
+struct vport *ovs_tnl_create(const struct vport_parms *, const struct vport_ops *,
+ const struct tnl_ops *);
+void ovs_tnl_destroy(struct vport *);
-struct vport *tnl_find_port(__be32 saddr, __be32 daddr, __be32 key,
- int tunnel_type,
- const struct tnl_mutable_config **mutable);
-bool tnl_frag_needed(struct vport *vport,
- const struct tnl_mutable_config *mutable,
- struct sk_buff *skb, unsigned int mtu, __be32 flow_key);
+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);
static inline struct tnl_vport *tnl_vport_priv(const struct vport *vport)
{
return vport_priv(vport);
}
+static inline void tnl_tun_key_init(struct ovs_key_ipv4_tunnel *tun_key,
+ const struct iphdr *iph, __be64 tun_id, u32 tun_flags)
+{
+ tun_key->tun_id = tun_id;
+ tun_key->ipv4_src = iph->saddr;
+ tun_key->ipv4_dst = iph->daddr;
+ tun_key->ipv4_tos = iph->tos;
+ tun_key->ipv4_ttl = iph->ttl;
+ tun_key->tun_flags = tun_flags;
+
+ /* clear struct padding. */
+ memset((unsigned char*) tun_key + OVS_TUNNEL_KEY_SIZE, 0,
+ sizeof(*tun_key) - OVS_TUNNEL_KEY_SIZE);
+}
+
#endif /* tunnel.h */
git://git.onelab.eu / sliver-openvswitch.git / blobdiff