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28 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
29 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
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62 * @(#)domain.h 8.1 (Berkeley) 6/2/93
63 * $FreeBSD: src/sys/sys/domain.h,v 1.14 1999/12/29 04:24:40 peter Exp $
66 #ifndef _SYS_DOMAIN_H_
67 #define _SYS_DOMAIN_H_
70 #include <sys/appleapiopts.h>
71 #include <sys/cdefs.h>
73 #include <kern/locks.h>
75 * Structure per communications domain.
79 * Forward structure declarations for function prototypes [sic].
85 #ifdef XNU_KERNEL_PRIVATE
89 * NOTE: Do not modify this structure, as there are modules outside of xnu
90 * which rely on the size and layout for binary compatibility. This structure
91 * is simply used by the exported net_{add,del}_domain_old, pffinddomain_old
92 * routines. Internally, domains are stored in the private variant of domain
98 #endif /* !XNU_KERNEL_PRIVATE */
99 int dom_family
; /* AF_xxx */
100 const char *dom_name
;
101 void (*dom_init
)(void); /* initialize domain data structures */
102 int (*dom_externalize
) /* externalize access rights */
104 void (*dom_dispose
) /* dispose of internalized rights */
106 #ifdef XNU_KERNEL_PRIVATE
107 struct protosw_old
*dom_protosw
; /* Chain of protosw's for AF */
108 struct domain_old
*dom_next
;
110 struct protosw
*dom_protosw
; /* Chain of protosw's for AF */
111 struct domain
*dom_next
;
112 #endif /* !XNU_KERNEL_PRIVATE */
113 int (*dom_rtattach
) /* initialize routing table */
115 int dom_rtoffset
; /* an arg to rtattach, in bits */
116 int dom_maxrtkey
; /* for routing layer */
117 int dom_protohdrlen
; /* len of protocol header */
118 int dom_refs
; /* # socreates outstanding */
119 lck_mtx_t
*dom_mtx
; /* domain global mutex */
121 uint32_t reserved
[2];
126 #ifdef XNU_KERNEL_PRIVATE
128 #include <sys/queue.h>
131 * Internal, private and extendable representation of domain.
134 int dom_family
; /* AF_xxx */
135 uint32_t dom_flags
; /* domain flags (see below ) */
136 uint32_t dom_refs
; /* # socreates outstanding */
137 lck_mtx_t
*dom_mtx
; /* domain global mutex */
138 decl_lck_mtx_data(, dom_mtx_s
);
139 TAILQ_ENTRY(domain
) dom_entry
; /* next domain in list */
140 TAILQ_HEAD(, protosw
) dom_protosw
; /* protosw chain */
141 void (*dom_init
) /* initialize domain data structures */
143 int (*dom_externalize
) /* externalize access rights */
145 void (*dom_dispose
) /* dispose of internalized rights */
147 int (*dom_rtattach
) /* initialize routing table */
149 int dom_rtoffset
; /* an arg to rtattach, in bits */
150 int dom_maxrtkey
; /* for routing layer */
151 int dom_protohdrlen
; /* len of protocol header */
152 const char *dom_name
;
153 struct domain_old
*dom_old
; /* domain pointer per net_add_domain */
156 extern TAILQ_HEAD(domains_head
, domain
) domains
;
157 extern struct domain
*localdomain
;
158 #endif /* XNU_KERNEL_PRIVATE */
161 * Values for dom_flags
163 #define DOM_REENTRANT 0x1
164 #ifdef BSD_KERNEL_PRIVATE
165 #define DOM_INITIALIZED 0x2 /* domain has been initialized */
166 #define DOM_ATTACHED 0x4 /* domain is in the global list */
167 #define DOM_OLD 0x10000000 /* domain added via net_add_domain */
169 /* pseudo-public domain flags */
170 #define DOMF_USERFLAGS (DOM_REENTRANT)
171 #endif /* BSD_KERNEL_PRIVATE */
174 #ifdef XNU_KERNEL_PRIVATE
175 extern void net_add_domain_old(struct domain_old
*dp
);
176 extern int net_del_domain_old(struct domain_old
*);
177 extern void net_drain_domains(void);
178 extern void domain_proto_mtx_lock_assert_held(void);
179 extern void domain_proto_mtx_lock_assert_notheld(void);
181 typedef const struct domain_guard
*domain_guard_t
;
182 extern domain_guard_t
domain_guard_deploy(void);
183 extern void domain_guard_release(domain_guard_t
);
184 struct domain_unguard
;
185 typedef const struct domain_unguard
*domain_unguard_t
;
186 extern domain_unguard_t
domain_unguard_deploy(void);
187 extern void domain_unguard_release(domain_unguard_t
);
188 extern struct domain_old
*pffinddomain_old(int);
189 extern struct domain
*pffinddomain(int) __XNU_INTERNAL(pffinddomain
);
191 extern void net_add_domain(struct domain
*dp
);
192 extern int net_del_domain(struct domain
*);
193 extern struct domain
*pffinddomain(int);
194 #endif /* XNU_KERNEL_PRIVATE */
196 #endif /* KERNEL_PRIVATE */
198 #endif /* _SYS_DOMAIN_H_ */