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/*-
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From: @(#)if.h 8.1 (Berkeley) 6/10/93
* $FreeBSD$
*/
#ifndef _NET_IF_CLONE_H_
#define _NET_IF_CLONE_H_
#ifdef _KERNEL
#define IFC_CLONE_INITIALIZER(name, data, maxunit, \
attach, match, create, destroy) \
{ { 0 }, name, maxunit, NULL, 0, data, attach, match, create, destroy }
/*
* Structure describing a `cloning' interface.
*
* List of locks
* (c) const until freeing
* (d) driver specific data, may need external protection.
* (e) locked by if_cloners_mtx
* (i) locked by ifc_mtx mtx
*/
struct if_clone {
LIST_ENTRY(if_clone) ifc_list; /* (e) On list of cloners */
const char *ifc_name; /* (c) Name of device, e.g. `gif' */
int ifc_maxunit; /* (c) Maximum unit number */
unsigned char *ifc_units; /* (i) Bitmap to handle units. */
/* Considered private, access */
/* via ifc_(alloc|free)_unit(). */
int ifc_bmlen; /* (c) Bitmap length. */
void *ifc_data; /* (*) Data for ifc_* functions. */
/* (c) Driver specific cloning functions. Called with no locks held. */
void (*ifc_attach)(struct if_clone *);
int (*ifc_match)(struct if_clone *, const char *);
int (*ifc_create)(struct if_clone *, char *, size_t, caddr_t);
int (*ifc_destroy)(struct if_clone *, struct ifnet *);
long ifc_refcnt; /* (i) Refrence count. */
struct mtx ifc_mtx; /* Muted to protect members. */
LIST_HEAD(, ifnet) ifc_iflist; /* (i) List of cloned interfaces */
};
void if_clone_init(void);
void if_clone_attach(struct if_clone *);
void if_clone_detach(struct if_clone *);
int if_clone_create(char *, size_t, caddr_t);
int if_clone_destroy(const char *);
int if_clone_list(struct if_clonereq *);
int ifc_name2unit(const char *name, int *unit);
int ifc_alloc_unit(struct if_clone *, int *);
void ifc_free_unit(struct if_clone *, int);
/*
* The ifc_simple functions, structures, and macros implement basic
* cloning as in 5.[012].
*/
struct ifc_simple_data {
int ifcs_minifs; /* minimum number of interfaces */
int (*ifcs_create)(struct if_clone *, int, caddr_t);
void (*ifcs_destroy)(struct ifnet *);
};
/* interface clone event */
typedef void (*if_clone_event_handler_t)(void *, struct if_clone *);
EVENTHANDLER_DECLARE(if_clone_event, if_clone_event_handler_t);
#define IFC_SIMPLE_DECLARE(name, minifs) \
struct ifc_simple_data name##_cloner_data = \
{minifs, name##_clone_create, name##_clone_destroy}; \
struct if_clone name##_cloner = \
IFC_CLONE_INITIALIZER(#name, &name##_cloner_data, IF_MAXUNIT, \
ifc_simple_attach, ifc_simple_match, ifc_simple_create, ifc_simple_destroy)
void ifc_simple_attach(struct if_clone *);
int ifc_simple_match(struct if_clone *, const char *);
int ifc_simple_create(struct if_clone *, char *, size_t, caddr_t);
int ifc_simple_destroy(struct if_clone *, struct ifnet *);
#endif /* _KERNEL */
#endif /* !_NET_IF_CLONE_H_ */
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