/*
- * Copyright (c) 2009 Nicira Networks.
+ * Copyright (c) 2009, 2010 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* This structure should be treated as opaque by dpif implementations. */
struct dpif {
const struct dpif_class *class;
- char *name;
+ char *base_name;
+ char *full_name;
uint8_t netflow_engine_type;
uint8_t netflow_engine_id;
};
}
/* Datapath interface class structure, to be defined by each implementation of
- * a datapath interface
+ * a datapath interface.
*
* These functions return 0 if successful or a positive errno value on failure,
* except where otherwise noted.
* EWOULDBLOCK or EINPROGRESS. We may relax this requirement in the future if
* and when we encounter performance problems. */
struct dpif_class {
- /* Prefix for names of dpifs in this class, e.g. "udatapath:".
+ /* Type of dpif in this class, e.g. "system", "netdev", etc.
*
- * One dpif class may have the empty string "" as its prefix, in which case
- * that dpif class is associated with dpif names that don't match any other
- * class name. */
- const char *prefix;
-
- /* Class name, for use in error messages. */
- const char *name;
+ * One of the providers should supply a "system" type, since this is
+ * the type assumed if no type is specified when opening a dpif. */
+ const char *type;
/* Performs periodic work needed by dpifs of this class, if any is
* necessary. */
* case this function may be a null pointer. */
int (*enumerate)(struct svec *all_dps);
- /* Attempts to open an existing dpif, if 'create' is false, or to open an
- * existing dpif or create a new one, if 'create' is true. 'name' is the
- * full dpif name provided by the user, e.g. "udatapath:/var/run/mypath".
- * This name is useful for error messages but must not be modified.
- *
- * 'suffix' is a copy of 'name' following the dpif's 'prefix'.
+ /* Attempts to open an existing dpif called 'name', if 'create' is false,
+ * or to open an existing dpif or create a new one, if 'create' is true.
+ * 'type' corresponds to the 'type' field used in the dpif_class
+ * structure.
*
* If successful, stores a pointer to the new dpif in '*dpifp'. On failure
* there are no requirements on what is stored in '*dpifp'. */
- int (*open)(const char *name, char *suffix, bool create,
+ int (*open)(const char *name, const char *type, bool create,
struct dpif **dpifp);
/* Closes 'dpif' and frees associated memory. */