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sys/net/vnet_support.c
- This file was added.
/*- | |||||
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
* | |||||
* Copyright (c) 2019 Kyle Evans <kevans@FreeBSD.org> | |||||
* | |||||
* 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. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. | |||||
*/ | |||||
#include <sys/cdefs.h> | |||||
__FBSDID("$FreeBSD$"); | |||||
#include <sys/param.h> | |||||
#include <sys/systm.h> | |||||
#include <net/vnet.h> | |||||
#ifdef KLD_MODULE | |||||
#error vnet_support.c may not be compiled into a module. | |||||
#endif | |||||
/* | |||||
* vimage_configured is compiled into the kernel. Untied modules will inspect | |||||
* it in various vnet-related macros as well as in invocations of the below | |||||
* vnet_dynamic_* functions that only get invoked from untied modules. | |||||
*/ | |||||
#ifdef VIMAGE | |||||
const int vimage_configured = 1; | |||||
#else | |||||
const int vimage_configured = 0; | |||||
#endif | |||||
/* | |||||
* Handlers for VNET_SYSINIT/VNET_SYSUNINIT in untied kmods that determine at | |||||
* runtime if they are working with a VIMAGE kernel or not. These either proxy | |||||
* through to the non-dynamic version as necessary, or they invoke the | |||||
* underlying callback at the correct time (as if directly specified | |||||
* SYSINIT/SYSUNINIT). | |||||
*/ | |||||
void | |||||
vnet_dynamic_register_sysinit(void *arg) | |||||
{ | |||||
struct vnet_sysinit *vs; | |||||
vs = arg; | |||||
KASSERT(vs->subsystem > SI_SUB_VNET, ("vnet sysinit too early")); | |||||
#ifdef VIMAGE | |||||
if (vimage_configured) | |||||
vnet_register_sysinit(arg); | |||||
else | |||||
#endif | |||||
vs->func(vs->arg); | |||||
} | |||||
void | |||||
vnet_dynamic_deregister_sysinit(void *arg) | |||||
{ | |||||
#ifdef VIMAGE | |||||
if (vimage_configured) | |||||
vnet_deregister_sysinit(arg); | |||||
#endif | |||||
} | |||||
void | |||||
vnet_dynamic_register_sysuninit(void *arg) | |||||
{ | |||||
#ifdef VIMAGE | |||||
if (vimage_configured) | |||||
vnet_register_sysuninit(arg); | |||||
#endif | |||||
} | |||||
void | |||||
vnet_dynamic_deregister_sysuninit(void *arg) | |||||
{ | |||||
struct vnet_sysinit *vs; | |||||
vs = arg; | |||||
#ifdef VIMAGE | |||||
if (vimage_configured) | |||||
vnet_deregister_sysuninit(arg); | |||||
else | |||||
#endif | |||||
vs->func(vs->arg); | |||||
} |