/*
- * Copyright (c) 2008, 2009, 2010 Nicira, Inc.
+ * Copyright (c) 2008, 2009, 2010, 2012, 2013 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
/* Provider interface to vconns, which provide a virtual connection to an
* OpenFlow device. */
-#include <assert.h>
#include "vconn.h"
+#include "util.h"
+#include "openflow/openflow-common.h"
\f
/* Active virtual connection to an OpenFlow device. */
*
* This structure should be treated as opaque by vconn implementations. */
struct vconn {
- struct vconn_class *class;
+ const struct vconn_class *class;
int state;
int error;
- int min_version;
- int version;
+
+ /* OpenFlow versions. */
+ uint32_t allowed_versions; /* Bitmap of versions we will accept. */
+ uint32_t peer_versions; /* Peer's bitmap of versions it will accept. */
+ enum ofp_version version; /* Negotiated version (or 0). */
+ bool recv_any_version; /* True to receive a message of any version. */
+
ovs_be32 remote_ip;
ovs_be16 remote_port;
ovs_be32 local_ip;
ovs_be16 local_port;
+
char *name;
};
-void vconn_init(struct vconn *, struct vconn_class *, int connect_status,
- const char *name);
+void vconn_init(struct vconn *, const struct vconn_class *, int connect_status,
+ const char *name, uint32_t allowed_versions);
+void vconn_free_data(struct vconn *vconn);
void vconn_set_remote_ip(struct vconn *, ovs_be32 remote_ip);
void vconn_set_remote_port(struct vconn *, ovs_be16 remote_port);
void vconn_set_local_ip(struct vconn *, ovs_be32 local_ip);
static inline void vconn_assert_class(const struct vconn *vconn,
const struct vconn_class *class)
{
- assert(vconn->class == class);
+ ovs_assert(vconn->class == class);
}
struct vconn_class {
* connection name provided by the user, e.g. "tcp:1.2.3.4". This name is
* useful for error messages but must not be modified.
*
+ * 'allowed_verions' is the OpenFlow versions that may be
+ * negotiated for a connection.
+ *
* 'suffix' is a copy of 'name' following the colon and may be modified.
* 'dscp' is the DSCP value that the new connection should use in the IP
* packets it sends.
* If the connection cannot be completed immediately, it should return
* EAGAIN (not EINPROGRESS, as returned by the connect system call) and
* continue the connection in the background. */
- int (*open)(const char *name, char *suffix, struct vconn **vconnp,
- uint8_t dscp);
+ int (*open)(const char *name, uint32_t allowed_versions,
+ char *suffix, struct vconn **vconnp, uint8_t dscp);
/* Closes 'vconn' and frees associated memory. */
void (*close)(struct vconn *vconn);
*
* This structure should be treated as opaque by vconn implementations. */
struct pvconn {
- struct pvconn_class *class;
+ const struct pvconn_class *class;
char *name;
+ uint32_t allowed_versions;
};
-void pvconn_init(struct pvconn *, struct pvconn_class *, const char *name);
+void pvconn_init(struct pvconn *pvconn, const struct pvconn_class *class,
+ const char *name, uint32_t allowed_versions);
static inline void pvconn_assert_class(const struct pvconn *pvconn,
const struct pvconn_class *class)
{
- assert(pvconn->class == class);
+ ovs_assert(pvconn->class == class);
}
struct pvconn_class {
* full connection name provided by the user, e.g. "ptcp:1234". This name
* is useful for error messages but must not be modified.
*
+ * 'allowed_versions' is the OpenFlow protocol versions that may
+ * be negotiated for a session.
+ *
* 'suffix' is a copy of 'name' following the colon and may be modified.
* 'dscp' is the DSCP value that the new connection should use in the IP
* packets it sends.
* completed immediately, it should return EAGAIN (not EINPROGRESS, as
* returned by the connect system call) and continue the connection in the
* background. */
- int (*listen)(const char *name, char *suffix, struct pvconn **pvconnp,
- uint8_t dscp);
+ int (*listen)(const char *name, uint32_t allowed_versions,
+ char *suffix, struct pvconn **pvconnp, uint8_t dscp);
/* Closes 'pvconn' and frees associated memory. */
void (*close)(struct pvconn *pvconn);
};
/* Active and passive vconn classes. */
-extern struct vconn_class tcp_vconn_class;
-extern struct pvconn_class ptcp_pvconn_class;
-extern struct vconn_class unix_vconn_class;
-extern struct pvconn_class punix_pvconn_class;
+extern const struct vconn_class tcp_vconn_class;
+extern const struct pvconn_class ptcp_pvconn_class;
+extern const struct vconn_class unix_vconn_class;
+extern const struct pvconn_class punix_pvconn_class;
#ifdef HAVE_OPENSSL
-extern struct vconn_class ssl_vconn_class;
-extern struct pvconn_class pssl_pvconn_class;
+extern const struct vconn_class ssl_vconn_class;
+extern const struct pvconn_class pssl_pvconn_class;
#endif
#endif /* vconn-provider.h */