11543Srgrimes/*- 21543Srgrimes * Copyright (c) 2006-2009 University of Zagreb 31543Srgrimes * Copyright (c) 2006-2009 FreeBSD Foundation 41543Srgrimes * All rights reserved. 51543Srgrimes * 61543Srgrimes * This software was developed by the University of Zagreb and the 71543Srgrimes * FreeBSD Foundation under sponsorship by the Stichting NLnet and the 81543Srgrimes * FreeBSD Foundation. 91543Srgrimes * 101543Srgrimes * Copyright (c) 2009 Jeffrey Roberson <jeff@freebsd.org> 111543Srgrimes * Copyright (c) 2009 Robert N. M. Watson 121543Srgrimes * All rights reserved. 131543Srgrimes * 141543Srgrimes * Redistribution and use in source and binary forms, with or without 151543Srgrimes * modification, are permitted provided that the following conditions 161543Srgrimes * are met: 171543Srgrimes * 1. Redistributions of source code must retain the above copyright 181543Srgrimes * notice, this list of conditions and the following disclaimer. 191543Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 201543Srgrimes * notice, this list of conditions and the following disclaimer in the 211543Srgrimes * documentation and/or other materials provided with the distribution. 221543Srgrimes * 231543Srgrimes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 241543Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 251543Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 261543Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 271543Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 281543Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 291543Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 301543Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 311543Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 321543Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 331543Srgrimes * SUCH DAMAGE. 3450477Speter * 351543Srgrimes * $FreeBSD$ 361543Srgrimes */ 3713107Sbde 3813107Sbde/*- 392166Spaul * This header file defines several sets of interfaces supporting virtualized 4055205Speter * network stacks: 4137542Sbde * 4213157Sbde * - Definition of 'struct vnet' and functions and macros to allocate/free/ 4322639Sbde * manipulate it. 4422639Sbde * 4522639Sbde * - A virtual network stack memory allocator, which provides support for 4622639Sbde * virtualized global variables via a special linker set, set_vnet. 4722639Sbde * 4822639Sbde * - Virtualized sysinits/sysuninits, which allow constructors and 4913157Sbde * destructors to be run for each network stack subsystem as virtual 5013157Sbde * instances are created and destroyed. 5113157Sbde * 5213157Sbde * If VIMAGE isn't compiled into the kernel, virtualized global variables 5313157Sbde * compile to normal global variables, and virtualized sysinits to regular 5413157Sbde * sysinits. 551543Srgrimes */ 5617879Sbde 5717879Sbde#ifndef _NET_VNET_H_ 5817879Sbde#define _NET_VNET_H_ 5922639Sbde 6017879Sbde/* 6117879Sbde * struct vnet describes a virtualized network stack, and is primarily a 6217879Sbde * pointer to storage for virtualized global variables. Expose to userspace 6337629Sbde * as required for libkvm. 6417879Sbde */ 6517879Sbde#if defined(_KERNEL) || defined(_WANT_VNET) 6628921Sfsmp#include <sys/queue.h> 6790024Sbde 68114349Speterstruct vnet { 6979734Sjhb LIST_ENTRY(vnet) vnet_le; /* all vnets list */ 7078908Sjhb u_int vnet_magic_n; 7178908Sjhb u_int vnet_ifcnt; 72114349Speter u_int vnet_sockcnt; 7328921Sfsmp void *vnet_data_mem; 74114349Speter uintptr_t vnet_data_base; 75114349Speter}; 7628921Sfsmp#define VNET_MAGIC_N 0x3e0d8f29 7717879Sbde 7817879Sbde/* 7955205Speter * These two virtual network stack allocator definitions are also required 8013157Sbde * for libkvm so that it can evaluate virtualized global variables. 8122639Sbde */ 8222639Sbde#define VNET_SETNAME "set_vnet" 8313157Sbde#define VNET_SYMPREFIX "vnet_entry_" 8413157Sbde#endif 8595195Smarkm 8695195Smarkm#ifdef _KERNEL 8795195Smarkm 8895195Smarkm#define VNET_PCPUSTAT_DECLARE(type, name) \ 8995195Smarkm VNET_DECLARE(counter_u64_t, name[sizeof(type) / sizeof(uint64_t)]) 9095195Smarkm 9195195Smarkm#define VNET_PCPUSTAT_DEFINE(type, name) \ 9295195Smarkm VNET_DEFINE(counter_u64_t, name[sizeof(type) / sizeof(uint64_t)]) 9395195Smarkm 9495195Smarkm#define VNET_PCPUSTAT_ALLOC(name, wait) \ 9595195Smarkm COUNTER_ARRAY_ALLOC(VNET(name), \ 9695195Smarkm sizeof(VNET(name)) / sizeof(counter_u64_t), (wait)) 97114349Speter 9895195Smarkm#define VNET_PCPUSTAT_FREE(name) \ 9995195Smarkm COUNTER_ARRAY_FREE(VNET(name), sizeof(VNET(name)) / sizeof(counter_u64_t)) 10095195Smarkm 10195195Smarkm#define VNET_PCPUSTAT_ADD(type, name, f, v) \ 10295195Smarkm counter_u64_add(VNET(name)[offsetof(type, f) / sizeof(uint64_t)], (v)) 10395195Smarkm 104114349Speter#define VNET_PCPUSTAT_SYSINIT(name) \ 10595195Smarkmstatic void \ 10695195Smarkmvnet_##name##_init(const void *unused) \ 1071543Srgrimes{ \ 10895195Smarkm VNET_PCPUSTAT_ALLOC(name, M_WAITOK); \ 109103965Smarkm} \ 11095195SmarkmVNET_SYSINIT(vnet_ ## name ## _init, SI_SUB_PROTO_IFATTACHDOMAIN, \ 11195195Smarkm SI_ORDER_ANY, vnet_ ## name ## _init, NULL) 11295195Smarkm 11395195Smarkm#define VNET_PCPUSTAT_SYSUNINIT(name) \ 11495195Smarkmstatic void \ 11537542Sbdevnet_##name##_uninit(const void *unused) \ 116114349Speter{ \ 11737542Sbde VNET_PCPUSTAT_FREE(name); \ 11855205Speter} \ 1192166SpaulVNET_SYSUNINIT(vnet_ ## name ## _uninit, SI_SUB_PROTO_IFATTACHDOMAIN, \ 12013107Sbde SI_ORDER_ANY, vnet_ ## name ## _uninit, NULL) 12113107Sbde 12213107Sbde#define SYSCTL_VNET_PCPUSTAT(parent, nbr, name, type, array, desc) \ 12313107Sbdestatic int \ 12431723Steggearray##_sysctl(SYSCTL_HANDLER_ARGS) \ 12513107Sbde{ \ 12655205Speter type s; \ 12719000Sbde CTASSERT((sizeof(type) / sizeof(uint64_t)) == \ 12892761Salfred (sizeof(VNET(array)) / sizeof(counter_u64_t))); \ 12992761Salfred COUNTER_ARRAY_COPY(VNET(array), &s, sizeof(type) / sizeof(uint64_t));\ 13019000Sbde if (req->newptr) \ 13119000Sbde COUNTER_ARRAY_ZERO(VNET(array), \ 13219000Sbde sizeof(type) / sizeof(uint64_t)); \ 13319000Sbde return (SYSCTL_OUT(req, &s, sizeof(type))); \ 13492761Salfred} \ 13592761SalfredSYSCTL_VNET_PROC(parent, nbr, name, CTLTYPE_OPAQUE | CTLFLAG_RW, NULL, \ 13692761Salfred 0, array ## _sysctl, "I", desc) 13792761Salfred 13813157Sbde#ifdef VIMAGE 13919000Sbde#include <sys/lock.h> 14019000Sbde#include <sys/proc.h> /* for struct thread */ 14119000Sbde#include <sys/rwlock.h> 14219000Sbde#include <sys/sx.h> 14355205Speter 14419000Sbde/* 14519000Sbde * Location of the kernel's 'set_vnet' linker set. 14619000Sbde */ 14719000Sbdeextern uintptr_t *__start_set_vnet; 14833047Sbde__GLOBL(__start_set_vnet); 14992761Salfredextern uintptr_t *__stop_set_vnet; 15033047Sbde__GLOBL(__stop_set_vnet); 15192761Salfred 15219000Sbde#define VNET_START (uintptr_t)&__start_set_vnet 15313157Sbde#define VNET_STOP (uintptr_t)&__stop_set_vnet 15455205Speter 15519000Sbde/* 15613157Sbde * Functions to allocate and destroy virtual network stacks. 15719000Sbde */ 15819000Sbdestruct vnet *vnet_alloc(void); 15919000Sbdevoid vnet_destroy(struct vnet *vnet); 16019000Sbde 16192761Salfred/* 16292761Salfred * The current virtual network stack -- we may wish to move this to struct 16392761Salfred * pcpu in the future. 16492761Salfred */ 16592761Salfred#define curvnet curthread->td_vnet 16619000Sbde 16713157Sbde/* 16813107Sbde * Various macros -- get and set the current network stack, but also 16913157Sbde * assertions. 170 */ 171#if defined(INVARIANTS) || defined(VNET_DEBUG) 172#define VNET_ASSERT(exp, msg) do { \ 173 if (!(exp)) \ 174 panic msg; \ 175} while (0) 176#else 177#define VNET_ASSERT(exp, msg) do { \ 178} while (0) 179#endif 180 181#ifdef VNET_DEBUG 182void vnet_log_recursion(struct vnet *, const char *, int); 183 184#define CURVNET_SET_QUIET(arg) \ 185 VNET_ASSERT((arg) != NULL && (arg)->vnet_magic_n == VNET_MAGIC_N, \ 186 ("CURVNET_SET at %s:%d %s() curvnet=%p vnet=%p", \ 187 __FILE__, __LINE__, __func__, curvnet, (arg))); \ 188 struct vnet *saved_vnet = curvnet; \ 189 const char *saved_vnet_lpush = curthread->td_vnet_lpush; \ 190 curvnet = arg; \ 191 curthread->td_vnet_lpush = __func__; 192 193#define CURVNET_SET_VERBOSE(arg) \ 194 CURVNET_SET_QUIET(arg) \ 195 if (saved_vnet) \ 196 vnet_log_recursion(saved_vnet, saved_vnet_lpush, __LINE__); 197 198#define CURVNET_SET(arg) CURVNET_SET_VERBOSE(arg) 199 200#define CURVNET_RESTORE() \ 201 VNET_ASSERT(curvnet != NULL && (saved_vnet == NULL || \ 202 saved_vnet->vnet_magic_n == VNET_MAGIC_N), \ 203 ("CURVNET_RESTORE at %s:%d %s() curvnet=%p saved_vnet=%p", \ 204 __FILE__, __LINE__, __func__, curvnet, saved_vnet)); \ 205 curvnet = saved_vnet; \ 206 curthread->td_vnet_lpush = saved_vnet_lpush; 207#else /* !VNET_DEBUG */ 208 209#define CURVNET_SET_QUIET(arg) \ 210 VNET_ASSERT((arg) != NULL && (arg)->vnet_magic_n == VNET_MAGIC_N, \ 211 ("CURVNET_SET at %s:%d %s() curvnet=%p vnet=%p", \ 212 __FILE__, __LINE__, __func__, curvnet, (arg))); \ 213 struct vnet *saved_vnet = curvnet; \ 214 curvnet = arg; 215 216#define CURVNET_SET_VERBOSE(arg) \ 217 CURVNET_SET_QUIET(arg) 218 219#define CURVNET_SET(arg) CURVNET_SET_VERBOSE(arg) 220 221#define CURVNET_RESTORE() \ 222 VNET_ASSERT(curvnet != NULL && (saved_vnet == NULL || \ 223 saved_vnet->vnet_magic_n == VNET_MAGIC_N), \ 224 ("CURVNET_RESTORE at %s:%d %s() curvnet=%p saved_vnet=%p", \ 225 __FILE__, __LINE__, __func__, curvnet, saved_vnet)); \ 226 curvnet = saved_vnet; 227#endif /* VNET_DEBUG */ 228 229extern struct vnet *vnet0; 230#define IS_DEFAULT_VNET(arg) ((arg) == vnet0) 231 232#define CRED_TO_VNET(cr) (cr)->cr_prison->pr_vnet 233#define TD_TO_VNET(td) CRED_TO_VNET((td)->td_ucred) 234#define P_TO_VNET(p) CRED_TO_VNET((p)->p_ucred) 235 236/* 237 * Global linked list of all virtual network stacks, along with read locks to 238 * access it. If a caller may sleep while accessing the list, it must use 239 * the sleepable lock macros. 240 */ 241LIST_HEAD(vnet_list_head, vnet); 242extern struct vnet_list_head vnet_head; 243extern struct rwlock vnet_rwlock; 244extern struct sx vnet_sxlock; 245 246#define VNET_LIST_RLOCK() sx_slock(&vnet_sxlock) 247#define VNET_LIST_RLOCK_NOSLEEP() rw_rlock(&vnet_rwlock) 248#define VNET_LIST_RUNLOCK() sx_sunlock(&vnet_sxlock) 249#define VNET_LIST_RUNLOCK_NOSLEEP() rw_runlock(&vnet_rwlock) 250 251/* 252 * Iteration macros to walk the global list of virtual network stacks. 253 */ 254#define VNET_ITERATOR_DECL(arg) struct vnet *arg 255#define VNET_FOREACH(arg) LIST_FOREACH((arg), &vnet_head, vnet_le) 256 257/* 258 * Virtual network stack memory allocator, which allows global variables to 259 * be automatically instantiated for each network stack instance. 260 */ 261#define VNET_NAME(n) vnet_entry_##n 262#define VNET_DECLARE(t, n) extern t VNET_NAME(n) 263#define VNET_DEFINE(t, n) t VNET_NAME(n) __section(VNET_SETNAME) __used 264#define _VNET_PTR(b, n) (__typeof(VNET_NAME(n))*) \ 265 ((b) + (uintptr_t)&VNET_NAME(n)) 266 267#define _VNET(b, n) (*_VNET_PTR(b, n)) 268 269/* 270 * Virtualized global variable accessor macros. 271 */ 272#define VNET_VNET_PTR(vnet, n) _VNET_PTR((vnet)->vnet_data_base, n) 273#define VNET_VNET(vnet, n) (*VNET_VNET_PTR((vnet), n)) 274 275#define VNET_PTR(n) VNET_VNET_PTR(curvnet, n) 276#define VNET(n) VNET_VNET(curvnet, n) 277 278/* 279 * Virtual network stack allocator interfaces from the kernel linker. 280 */ 281void *vnet_data_alloc(int size); 282void vnet_data_copy(void *start, int size); 283void vnet_data_free(void *start_arg, int size); 284 285/* 286 * Sysctl variants for vnet-virtualized global variables. Include 287 * <sys/sysctl.h> to expose these definitions. 288 * 289 * Note: SYSCTL_PROC() handler functions will need to resolve pointer 290 * arguments themselves, if required. 291 */ 292#ifdef SYSCTL_OID 293#define SYSCTL_VNET_INT(parent, nbr, name, access, ptr, val, descr) \ 294 SYSCTL_OID(parent, nbr, name, \ 295 CTLTYPE_INT|CTLFLAG_MPSAFE|CTLFLAG_VNET|(access), \ 296 ptr, val, sysctl_handle_int, "I", descr) 297#define SYSCTL_VNET_PROC(parent, nbr, name, access, ptr, arg, handler, \ 298 fmt, descr) \ 299 CTASSERT(((access) & CTLTYPE) != 0); \ 300 SYSCTL_OID(parent, nbr, name, CTLFLAG_VNET|(access), ptr, arg, \ 301 handler, fmt, descr) 302#define SYSCTL_VNET_OPAQUE(parent, nbr, name, access, ptr, len, fmt, \ 303 descr) \ 304 SYSCTL_OID(parent, nbr, name, \ 305 CTLTYPE_OPAQUE|CTLFLAG_VNET|(access), ptr, len, \ 306 sysctl_handle_opaque, fmt, descr) 307#define SYSCTL_VNET_STRING(parent, nbr, name, access, arg, len, descr) \ 308 SYSCTL_OID(parent, nbr, name, \ 309 CTLTYPE_STRING|CTLFLAG_VNET|(access), \ 310 arg, len, sysctl_handle_string, "A", descr) 311#define SYSCTL_VNET_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 312 SYSCTL_OID(parent, nbr, name, \ 313 CTLTYPE_OPAQUE|CTLFLAG_VNET|(access), ptr, \ 314 sizeof(struct type), sysctl_handle_opaque, "S," #type, \ 315 descr) 316#define SYSCTL_VNET_UINT(parent, nbr, name, access, ptr, val, descr) \ 317 SYSCTL_OID(parent, nbr, name, \ 318 CTLTYPE_UINT|CTLFLAG_MPSAFE|CTLFLAG_VNET|(access), \ 319 ptr, val, sysctl_handle_int, "IU", descr) 320#define VNET_SYSCTL_ARG(req, arg1) do { \ 321 if (arg1 != NULL) \ 322 arg1 = (void *)(TD_TO_VNET((req)->td)->vnet_data_base + \ 323 (uintptr_t)(arg1)); \ 324} while (0) 325#endif /* SYSCTL_OID */ 326 327/* 328 * Virtual sysinit mechanism, allowing network stack components to declare 329 * startup and shutdown methods to be run when virtual network stack 330 * instances are created and destroyed. 331 */ 332#include <sys/kernel.h> 333 334/* 335 * SYSINIT/SYSUNINIT variants that provide per-vnet constructors and 336 * destructors. 337 */ 338struct vnet_sysinit { 339 enum sysinit_sub_id subsystem; 340 enum sysinit_elem_order order; 341 sysinit_cfunc_t func; 342 const void *arg; 343 TAILQ_ENTRY(vnet_sysinit) link; 344}; 345 346#define VNET_SYSINIT(ident, subsystem, order, func, arg) \ 347 static struct vnet_sysinit ident ## _vnet_init = { \ 348 subsystem, \ 349 order, \ 350 (sysinit_cfunc_t)(sysinit_nfunc_t)func, \ 351 (arg) \ 352 }; \ 353 SYSINIT(vnet_init_ ## ident, subsystem, order, \ 354 vnet_register_sysinit, &ident ## _vnet_init); \ 355 SYSUNINIT(vnet_init_ ## ident, subsystem, order, \ 356 vnet_deregister_sysinit, &ident ## _vnet_init) 357 358#define VNET_SYSUNINIT(ident, subsystem, order, func, arg) \ 359 static struct vnet_sysinit ident ## _vnet_uninit = { \ 360 subsystem, \ 361 order, \ 362 (sysinit_cfunc_t)(sysinit_nfunc_t)func, \ 363 (arg) \ 364 }; \ 365 SYSINIT(vnet_uninit_ ## ident, subsystem, order, \ 366 vnet_register_sysuninit, &ident ## _vnet_uninit); \ 367 SYSUNINIT(vnet_uninit_ ## ident, subsystem, order, \ 368 vnet_deregister_sysuninit, &ident ## _vnet_uninit) 369 370/* 371 * Run per-vnet sysinits or sysuninits during vnet creation/destruction. 372 */ 373void vnet_sysinit(void); 374void vnet_sysuninit(void); 375 376/* 377 * Interfaces for managing per-vnet constructors and destructors. 378 */ 379void vnet_register_sysinit(void *arg); 380void vnet_register_sysuninit(void *arg); 381void vnet_deregister_sysinit(void *arg); 382void vnet_deregister_sysuninit(void *arg); 383 384/* 385 * EVENTHANDLER(9) extensions. 386 */ 387#include <sys/eventhandler.h> 388 389void vnet_global_eventhandler_iterator_func(void *, ...); 390#define VNET_GLOBAL_EVENTHANDLER_REGISTER_TAG(tag, name, func, arg, priority) \ 391do { \ 392 if (IS_DEFAULT_VNET(curvnet)) { \ 393 (tag) = vimage_eventhandler_register(NULL, #name, func, \ 394 arg, priority, \ 395 vnet_global_eventhandler_iterator_func); \ 396 } \ 397} while(0) 398#define VNET_GLOBAL_EVENTHANDLER_REGISTER(name, func, arg, priority) \ 399do { \ 400 if (IS_DEFAULT_VNET(curvnet)) { \ 401 vimage_eventhandler_register(NULL, #name, func, \ 402 arg, priority, \ 403 vnet_global_eventhandler_iterator_func); \ 404 } \ 405} while(0) 406 407#else /* !VIMAGE */ 408 409/* 410 * Various virtual network stack macros compile to no-ops without VIMAGE. 411 */ 412#define curvnet NULL 413 414#define VNET_ASSERT(exp, msg) 415#define CURVNET_SET(arg) 416#define CURVNET_SET_QUIET(arg) 417#define CURVNET_RESTORE() 418 419#define VNET_LIST_RLOCK() 420#define VNET_LIST_RLOCK_NOSLEEP() 421#define VNET_LIST_RUNLOCK() 422#define VNET_LIST_RUNLOCK_NOSLEEP() 423#define VNET_ITERATOR_DECL(arg) 424#define VNET_FOREACH(arg) 425 426#define IS_DEFAULT_VNET(arg) 1 427#define CRED_TO_VNET(cr) NULL 428#define TD_TO_VNET(td) NULL 429#define P_TO_VNET(p) NULL 430 431/* 432 * Versions of the VNET macros that compile to normal global variables and 433 * standard sysctl definitions. 434 */ 435#define VNET_NAME(n) n 436#define VNET_DECLARE(t, n) extern t n 437#define VNET_DEFINE(t, n) t n 438#define _VNET_PTR(b, n) &VNET_NAME(n) 439 440/* 441 * Virtualized global variable accessor macros. 442 */ 443#define VNET_VNET_PTR(vnet, n) (&(n)) 444#define VNET_VNET(vnet, n) (n) 445 446#define VNET_PTR(n) (&(n)) 447#define VNET(n) (n) 448 449/* 450 * When VIMAGE isn't compiled into the kernel, virtaulized SYSCTLs simply 451 * become normal SYSCTLs. 452 */ 453#ifdef SYSCTL_OID 454#define SYSCTL_VNET_INT(parent, nbr, name, access, ptr, val, descr) \ 455 SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) 456#define SYSCTL_VNET_PROC(parent, nbr, name, access, ptr, arg, handler, \ 457 fmt, descr) \ 458 SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, \ 459 descr) 460#define SYSCTL_VNET_OPAQUE(parent, nbr, name, access, ptr, len, fmt, \ 461 descr) \ 462 SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) 463#define SYSCTL_VNET_STRING(parent, nbr, name, access, arg, len, descr) \ 464 SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) 465#define SYSCTL_VNET_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 466 SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) 467#define SYSCTL_VNET_UINT(parent, nbr, name, access, ptr, val, descr) \ 468 SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) 469#define VNET_SYSCTL_ARG(req, arg1) 470#endif /* SYSCTL_OID */ 471 472/* 473 * When VIMAGE isn't compiled into the kernel, VNET_SYSINIT/VNET_SYSUNINIT 474 * map into normal sysinits, which have the same ordering properties. 475 */ 476#define VNET_SYSINIT(ident, subsystem, order, func, arg) \ 477 SYSINIT(ident, subsystem, order, func, arg) 478#define VNET_SYSUNINIT(ident, subsystem, order, func, arg) \ 479 SYSUNINIT(ident, subsystem, order, func, arg) 480 481/* 482 * Without VIMAGE revert to the default implementation. 483 */ 484#define VNET_GLOBAL_EVENTHANDLER_REGISTER_TAG(tag, name, func, arg, priority) \ 485 (tag) = eventhandler_register(NULL, #name, func, arg, priority) 486#define VNET_GLOBAL_EVENTHANDLER_REGISTER(name, func, arg, priority) \ 487 eventhandler_register(NULL, #name, func, arg, priority) 488#endif /* VIMAGE */ 489#endif /* _KERNEL */ 490 491#endif /* !_NET_VNET_H_ */ 492