d0728d7174
network stacks, VNET_SYSINIT: - Add VNET_SYSINIT and VNET_SYSUNINIT macros to declare events that will occur each time a network stack is instantiated and destroyed. In the !VIMAGE case, these are simply mapped into regular SYSINIT/SYSUNINIT. For the VIMAGE case, we instead use SYSINIT's to track their order and properties on registration, using them for each vnet when created/ destroyed, or immediately on module load for already-started vnets. - Remove vnet_modinfo mechanism that existed to serve this purpose previously, as well as its dependency scheme: we now just use the SYSINIT ordering scheme. - Implement VNET_DOMAIN_SET() to allow protocol domains to declare that they want init functions to be called for each virtual network stack rather than just once at boot, compiling down to DOMAIN_SET() in the non-VIMAGE case. - Walk all virtualized kernel subsystems and make use of these instead of modinfo or DOMAIN_SET() for init/uninit events. In some cases, convert modular components from using modevent to using sysinit (where appropriate). In some cases, do minor rejuggling of SYSINIT ordering to make room for or better manage events. Portions submitted by: jhb (VNET_SYSINIT), bz (cleanup) Discussed with: jhb, bz, julian, zec Reviewed by: bz Approved by: re (VIMAGE blanket)
107 lines
3.9 KiB
C
107 lines
3.9 KiB
C
/*-
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)domain.h 8.1 (Berkeley) 6/2/93
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* $FreeBSD$
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*/
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#ifndef _SYS_DOMAIN_H_
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#define _SYS_DOMAIN_H_
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/*
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* Structure per communications domain.
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*/
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/*
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* Forward structure declarations for function prototypes [sic].
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*/
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struct mbuf;
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struct ifnet;
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struct domain {
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int dom_family; /* AF_xxx */
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char *dom_name;
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void (*dom_init) /* initialize domain data structures */
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(void);
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void (*dom_destroy) /* cleanup structures / state */
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(void);
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int (*dom_externalize) /* externalize access rights */
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(struct mbuf *, struct mbuf **);
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void (*dom_dispose) /* dispose of internalized rights */
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(struct mbuf *);
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struct protosw *dom_protosw, *dom_protoswNPROTOSW;
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struct domain *dom_next;
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int (*dom_rtattach) /* initialize routing table */
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(void **, int);
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int (*dom_rtdetach) /* clean up routing table */
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(void **, int);
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int dom_rtoffset; /* an arg to rtattach, in bits */
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/* XXX MRT.
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* rtoffset May be 0 if the domain supplies its own rtattach(),
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* in which case, a 0 indicates it's being called from
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* vfs_export.c (HACK) Only for AF_INET{,6} at this time.
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* Temporary ABI compat hack.. fix post RELENG_7
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*/
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int dom_maxrtkey; /* for routing layer */
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void *(*dom_ifattach)(struct ifnet *);
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void (*dom_ifdetach)(struct ifnet *, void *);
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/* af-dependent data on ifnet */
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};
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#ifdef _KERNEL
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extern int domain_init_status;
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extern struct domain *domains;
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void domain_add(void *);
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void domain_init(void *);
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#ifdef VIMAGE
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void vnet_domain_init(void *);
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void vnet_domain_uninit(void *);
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#endif
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#define DOMAIN_SET(name) \
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SYSINIT(domain_add_ ## name, SI_SUB_PROTO_DOMAIN, \
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SI_ORDER_FIRST, domain_add, & name ## domain); \
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SYSINIT(domain_init_ ## name, SI_SUB_PROTO_DOMAIN, \
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SI_ORDER_SECOND, domain_init, & name ## domain);
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#ifdef VIMAGE
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#define VNET_DOMAIN_SET(name) \
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SYSINIT(domain_add_ ## name, SI_SUB_PROTO_DOMAIN, \
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SI_ORDER_FIRST, domain_add, & name ## domain); \
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VNET_SYSINIT(vnet_domain_init_ ## name, SI_SUB_PROTO_DOMAIN, \
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SI_ORDER_SECOND, vnet_domain_init, & name ## domain); \
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VNET_SYSUNINIT(vnet_domain_uninit_ ## name, \
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SI_SUB_PROTO_DOMAIN, SI_ORDER_SECOND, vnet_domain_uninit, \
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& name ## domain)
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#else /* !VIMAGE */
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#define VNET_DOMAIN_SET(name) DOMAIN_SET(name)
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#endif /* VIMAGE */
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#endif /* _KERNEL */
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#endif /* !_SYS_DOMAIN_H_ */
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