xref: /illumos-gate/usr/src/uts/common/os/space.c (revision da14cebe)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5fea9cb91Slq  * Common Development and Distribution License (the "License").
6fea9cb91Slq  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
21fea9cb91Slq 
227c478bd9Sstevel@tonic-gate /*
236cefaae1SJack Meng  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
247c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate 
277c478bd9Sstevel@tonic-gate /*
287c478bd9Sstevel@tonic-gate  * The intent of this file is to contain any data that must remain
297c478bd9Sstevel@tonic-gate  * resident in the kernel.
307c478bd9Sstevel@tonic-gate  *
317c478bd9Sstevel@tonic-gate  * space_store(), space_fetch(), and space_free() have been added to
327c478bd9Sstevel@tonic-gate  * easily store and retrieve kernel resident data.
337c478bd9Sstevel@tonic-gate  * These functions are recommended rather than adding new variables to
347c478bd9Sstevel@tonic-gate  * this file.
357c478bd9Sstevel@tonic-gate  *
367c478bd9Sstevel@tonic-gate  * Note that it's possible for name collisions to occur.  In order to
377c478bd9Sstevel@tonic-gate  * prevent collisions, it's recommended that the convention in
387c478bd9Sstevel@tonic-gate  * PSARC/1997/389 be used.  If a collision occurs, then space_store will
397c478bd9Sstevel@tonic-gate  * fail.
407c478bd9Sstevel@tonic-gate  */
417c478bd9Sstevel@tonic-gate 
427c478bd9Sstevel@tonic-gate #include <sys/types.h>
437c478bd9Sstevel@tonic-gate #include <sys/param.h>
447c478bd9Sstevel@tonic-gate #include <sys/var.h>
457c478bd9Sstevel@tonic-gate #include <sys/proc.h>
467c478bd9Sstevel@tonic-gate #include <sys/signal.h>
477c478bd9Sstevel@tonic-gate #include <sys/utsname.h>
487c478bd9Sstevel@tonic-gate #include <sys/buf.h>
497c478bd9Sstevel@tonic-gate #include <sys/cred.h>
507c478bd9Sstevel@tonic-gate #include <sys/vfs.h>
517c478bd9Sstevel@tonic-gate #include <sys/vnode.h>
527c478bd9Sstevel@tonic-gate #include <sys/sysinfo.h>
537c478bd9Sstevel@tonic-gate #include <sys/t_lock.h>
547c478bd9Sstevel@tonic-gate #include <sys/vmem.h>
557c478bd9Sstevel@tonic-gate #include <sys/modhash.h>
567c478bd9Sstevel@tonic-gate #include <sys/cmn_err.h>
577c478bd9Sstevel@tonic-gate 
587c478bd9Sstevel@tonic-gate #include <sys/strredir.h>
597c478bd9Sstevel@tonic-gate #include <sys/kbio.h>
60fea9cb91Slq #include <sys/consdev.h>
61fea9cb91Slq #include <sys/wscons.h>
626cefaae1SJack Meng #include <sys/bootprops.h>
637c478bd9Sstevel@tonic-gate 
647c478bd9Sstevel@tonic-gate struct	buf	bfreelist;	/* Head of the free list of buffers */
657c478bd9Sstevel@tonic-gate 
667c478bd9Sstevel@tonic-gate sysinfo_t	sysinfo;
677c478bd9Sstevel@tonic-gate vminfo_t	vminfo;		/* VM stats protected by sysinfolock mutex */
687c478bd9Sstevel@tonic-gate 
697c478bd9Sstevel@tonic-gate #ifdef	lint
707c478bd9Sstevel@tonic-gate int	__lintzero;		/* Alway zero for shutting up lint */
717c478bd9Sstevel@tonic-gate #endif
727c478bd9Sstevel@tonic-gate 
737c478bd9Sstevel@tonic-gate /*
747c478bd9Sstevel@tonic-gate  * The following describe the physical memory configuration.
757c478bd9Sstevel@tonic-gate  *
767c478bd9Sstevel@tonic-gate  *	physmem	 -  The amount of physical memory configured
777c478bd9Sstevel@tonic-gate  *		    in pages.  ptob(physmem) is the amount
787c478bd9Sstevel@tonic-gate  *		    of physical memory in bytes.  Defined in
797c478bd9Sstevel@tonic-gate  *		    .../os/startup.c.
807c478bd9Sstevel@tonic-gate  *
817c478bd9Sstevel@tonic-gate  *	physmax  -  The highest numbered physical page in memory.
827c478bd9Sstevel@tonic-gate  *
837c478bd9Sstevel@tonic-gate  *	maxmem	 -  Maximum available memory, in pages.  Defined
847c478bd9Sstevel@tonic-gate  *		    in main.c.
857c478bd9Sstevel@tonic-gate  *
867c478bd9Sstevel@tonic-gate  *	physinstalled
877c478bd9Sstevel@tonic-gate  *		 -  Pages of physical memory installed;
887c478bd9Sstevel@tonic-gate  *		    includes use by PROM/boot not counted in
897c478bd9Sstevel@tonic-gate  *		    physmem.
907c478bd9Sstevel@tonic-gate  */
917c478bd9Sstevel@tonic-gate 
927c478bd9Sstevel@tonic-gate pfn_t	physmax;
937c478bd9Sstevel@tonic-gate pgcnt_t	physinstalled;
947c478bd9Sstevel@tonic-gate 
957c478bd9Sstevel@tonic-gate struct var v;
967c478bd9Sstevel@tonic-gate 
977c478bd9Sstevel@tonic-gate #include <sys/systm.h>
987c478bd9Sstevel@tonic-gate #include <sys/conf.h>
997c478bd9Sstevel@tonic-gate #include <sys/kmem.h>
1007c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h>
1017c478bd9Sstevel@tonic-gate #include <sys/bootconf.h>
1027c478bd9Sstevel@tonic-gate 
1037c478bd9Sstevel@tonic-gate /*
1047c478bd9Sstevel@tonic-gate  * Data from swapgeneric.c that must be resident.
1057c478bd9Sstevel@tonic-gate  */
1067c478bd9Sstevel@tonic-gate struct vnode *rootvp;		/* vnode of the root device */
1077c478bd9Sstevel@tonic-gate dev_t rootdev;			/* dev_t of the root device */
108986fd29aSsetje boolean_t root_is_svm;		/* root is a mirrored device flag */
109986fd29aSsetje boolean_t root_is_ramdisk;	/* root is ramdisk */
110986fd29aSsetje uint32_t ramdisk_size;		/* (KB) currently set only for sparc netboots */
1117c478bd9Sstevel@tonic-gate 
1127c478bd9Sstevel@tonic-gate /*
113986fd29aSsetje  * dhcp
1147c478bd9Sstevel@tonic-gate  */
1157c478bd9Sstevel@tonic-gate #include <sys/socket.h>
1167c478bd9Sstevel@tonic-gate #include <sys/errno.h>
1177c478bd9Sstevel@tonic-gate #include <sys/sockio.h>
1187c478bd9Sstevel@tonic-gate #include <sys/stream.h>
1197c478bd9Sstevel@tonic-gate #include <sys/stropts.h>
1207c478bd9Sstevel@tonic-gate #include <sys/dlpi.h>
1217c478bd9Sstevel@tonic-gate #include <net/if.h>
122986fd29aSsetje 
123986fd29aSsetje int netboot;
124986fd29aSsetje int obpdebug;
125986fd29aSsetje char *dhcack;		/* dhcp response packet */
126986fd29aSsetje int dhcacklen;
127986fd29aSsetje char *netdev_path;	/* Used to cache the netdev_path handed up by boot */
128986fd29aSsetje char dhcifname[IFNAMSIZ];
129986fd29aSsetje 
130986fd29aSsetje /*
131986fd29aSsetje  * Data from arp.c that must be resident.
132986fd29aSsetje  */
1337c478bd9Sstevel@tonic-gate #include <net/if_arp.h>
1347c478bd9Sstevel@tonic-gate #include <netinet/in.h>
1357c478bd9Sstevel@tonic-gate #include <netinet/in_var.h>
1367c478bd9Sstevel@tonic-gate #include <netinet/if_ether.h>
1377c478bd9Sstevel@tonic-gate 
1387c478bd9Sstevel@tonic-gate ether_addr_t etherbroadcastaddr = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
1397c478bd9Sstevel@tonic-gate 
140986fd29aSsetje 
1417c478bd9Sstevel@tonic-gate /*
1427c478bd9Sstevel@tonic-gate  * Data from timod that must be resident
1437c478bd9Sstevel@tonic-gate  */
1447c478bd9Sstevel@tonic-gate 
1457c478bd9Sstevel@tonic-gate /*
1467c478bd9Sstevel@tonic-gate  * state transition table for TI interface
1477c478bd9Sstevel@tonic-gate  */
1487c478bd9Sstevel@tonic-gate #include <sys/tihdr.h>
1497c478bd9Sstevel@tonic-gate 
1507c478bd9Sstevel@tonic-gate #define	nr	127		/* not reachable */
1517c478bd9Sstevel@tonic-gate 
1527c478bd9Sstevel@tonic-gate char ti_statetbl[TE_NOEVENTS][TS_NOSTATES] = {
1537c478bd9Sstevel@tonic-gate 				/* STATES */
1547c478bd9Sstevel@tonic-gate 	/* 0  1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16 */
1557c478bd9Sstevel@tonic-gate 
1567c478bd9Sstevel@tonic-gate 	{ 1, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1577c478bd9Sstevel@tonic-gate 	{nr, nr, nr,  2, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1587c478bd9Sstevel@tonic-gate 	{nr, nr, nr,  4, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1597c478bd9Sstevel@tonic-gate 	{nr,  3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1607c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr,  3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1617c478bd9Sstevel@tonic-gate 	{nr,  0,  3, nr,  3,  3, nr, nr,  7, nr, nr, nr,  6,  7,  9, 10, 11},
1627c478bd9Sstevel@tonic-gate 	{nr, nr,  0, nr, nr,  6, nr, nr, nr, nr, nr, nr,  3, nr,  3,  3,  3},
1637c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, nr, nr,  9, nr, nr, nr, nr,  3, nr, nr, nr},
1647c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, nr, nr,  3, nr, nr, nr, nr,  3, nr, nr, nr},
1657c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, nr, nr,  7, nr, nr, nr, nr,  7, nr, nr, nr},
1667c478bd9Sstevel@tonic-gate 	{nr, nr, nr,  5, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1677c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, nr,  8, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1687c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, 12, 13, nr, 14, 15, 16, nr, nr, nr, nr, nr},
1697c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, nr, nr, nr,  9, nr, 11, nr, nr, nr, nr, nr},
1707c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, nr, nr, nr,  9, nr, 11, nr, nr, nr, nr, nr},
1717c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, nr, nr, nr, 10, nr,  3, nr, nr, nr, nr, nr},
1727c478bd9Sstevel@tonic-gate 	{nr, nr, nr,  7, nr, nr, nr,  7, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1737c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr,  9, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1747c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, nr, nr, nr,  9, 10, nr, nr, nr, nr, nr, nr},
1757c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, nr, nr, nr,  9, 10, nr, nr, nr, nr, nr, nr},
1767c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, nr, nr, nr, 11,  3, nr, nr, nr, nr, nr, nr},
1777c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr,  3, nr, nr,  3,  3,  3, nr, nr, nr, nr, nr},
1787c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, nr,  3, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1797c478bd9Sstevel@tonic-gate 	{nr, nr, nr, nr, nr, nr, nr,  7, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1807c478bd9Sstevel@tonic-gate 	{nr, nr, nr,  9, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1817c478bd9Sstevel@tonic-gate 	{nr, nr, nr,  3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1827c478bd9Sstevel@tonic-gate 	{nr, nr, nr,  3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1837c478bd9Sstevel@tonic-gate 	{nr, nr, nr,  3, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr, nr},
1847c478bd9Sstevel@tonic-gate };
1857c478bd9Sstevel@tonic-gate 
1867c478bd9Sstevel@tonic-gate 
1877c478bd9Sstevel@tonic-gate #include <sys/tty.h>
1887c478bd9Sstevel@tonic-gate #include <sys/ptyvar.h>
1897c478bd9Sstevel@tonic-gate 
1907c478bd9Sstevel@tonic-gate static void store_fetch_initspace();
1917c478bd9Sstevel@tonic-gate 
1927c478bd9Sstevel@tonic-gate /*
1937c478bd9Sstevel@tonic-gate  * Allocate tunable structures at runtime.
1947c478bd9Sstevel@tonic-gate  */
1957c478bd9Sstevel@tonic-gate void
1967c478bd9Sstevel@tonic-gate space_init(void)
1977c478bd9Sstevel@tonic-gate {
1987c478bd9Sstevel@tonic-gate 	pty_initspace();
1997c478bd9Sstevel@tonic-gate 	store_fetch_initspace();
2007c478bd9Sstevel@tonic-gate }
2017c478bd9Sstevel@tonic-gate 
2027c478bd9Sstevel@tonic-gate int ts_dispatch_extended = -1; /* set in ts_getdptbl or set_platform_default */
2037c478bd9Sstevel@tonic-gate 
2047c478bd9Sstevel@tonic-gate /*
2057c478bd9Sstevel@tonic-gate  * Previously defined in consmsconf.c ...
2067c478bd9Sstevel@tonic-gate  */
2077c478bd9Sstevel@tonic-gate dev_t kbddev = NODEV;
2087c478bd9Sstevel@tonic-gate dev_t mousedev = NODEV;
2097c478bd9Sstevel@tonic-gate dev_t stdindev = NODEV;
2107c478bd9Sstevel@tonic-gate struct vnode *wsconsvp;
2117c478bd9Sstevel@tonic-gate 
2127c478bd9Sstevel@tonic-gate dev_t fbdev = NODEV;
2137c478bd9Sstevel@tonic-gate struct vnode *fbvp;
2147c478bd9Sstevel@tonic-gate dev_info_t *fbdip;
2157c478bd9Sstevel@tonic-gate 
2167c478bd9Sstevel@tonic-gate /*
2177c478bd9Sstevel@tonic-gate  * moved from cons.c because they must be resident in the kernel.
2187c478bd9Sstevel@tonic-gate  */
2197c478bd9Sstevel@tonic-gate vnode_t	*rconsvp;
2207c478bd9Sstevel@tonic-gate dev_t	rconsdev;
2217c478bd9Sstevel@tonic-gate dev_t	uconsdev = NODEV;
2227c478bd9Sstevel@tonic-gate 
223fea9cb91Slq /*
224fea9cb91Slq  * Flag whether console fb output is using PROM/PROM emulation
225fea9cb91Slq  * terminal emulator, or is using the kernel terminal emulator.
226fea9cb91Slq  */
227fea9cb91Slq int	consmode = CONS_FW;
228fea9cb91Slq 
229fea9cb91Slq /*
230fea9cb91Slq  * The following allows systems to disable use of the kernel
231fea9cb91Slq  * terminal emulator (retreat to PROM terminal emulator if there
232fea9cb91Slq  * is PROM).
233fea9cb91Slq  */
234fea9cb91Slq int	cons_tem_disable;
235fea9cb91Slq 
2367c478bd9Sstevel@tonic-gate /*
2377c478bd9Sstevel@tonic-gate  * consconfig() in autoconf.c sets this; it's the vnode of the distinguished
2387c478bd9Sstevel@tonic-gate  * keyboard/frame buffer combination, aka the workstation console.
2397c478bd9Sstevel@tonic-gate  */
2407c478bd9Sstevel@tonic-gate vnode_t *rwsconsvp;
2417c478bd9Sstevel@tonic-gate dev_t	rwsconsdev;
2427c478bd9Sstevel@tonic-gate 
2437c478bd9Sstevel@tonic-gate /*
2447c478bd9Sstevel@tonic-gate  * Platform console abort policy.
2457c478bd9Sstevel@tonic-gate  * Platforms may override the default software policy, if such hardware
2467c478bd9Sstevel@tonic-gate  * (e.g. keyswitches with a secure position) exists.
2477c478bd9Sstevel@tonic-gate  */
2487c478bd9Sstevel@tonic-gate int abort_enable = KIOCABORTENABLE;
2497c478bd9Sstevel@tonic-gate 
2507c478bd9Sstevel@tonic-gate /* from cpc.c */
2517c478bd9Sstevel@tonic-gate uint_t kcpc_key;	/* TSD key for CPU performance counter context */
2527c478bd9Sstevel@tonic-gate 
2537c478bd9Sstevel@tonic-gate /*
2547c478bd9Sstevel@tonic-gate  * storing and retrieving data by string key
2557c478bd9Sstevel@tonic-gate  *
2567c478bd9Sstevel@tonic-gate  * this mechanism allows a consumer to store and retrieve by name a pointer
2577c478bd9Sstevel@tonic-gate  * to some space maintained by the consumer.
2587c478bd9Sstevel@tonic-gate  * For example, a driver or module may want to have persistent data
2597c478bd9Sstevel@tonic-gate  * over unloading/loading cycles. The pointer is typically to some
2607c478bd9Sstevel@tonic-gate  * kmem_alloced space and it should not be pointing to data that will
2617c478bd9Sstevel@tonic-gate  * be destroyed when the module is unloaded.
2627c478bd9Sstevel@tonic-gate  */
2637c478bd9Sstevel@tonic-gate static mod_hash_t *space_hash;
2647c478bd9Sstevel@tonic-gate static char *space_hash_name = "space_hash";
2657c478bd9Sstevel@tonic-gate static size_t	space_hash_nchains = 8;
2667c478bd9Sstevel@tonic-gate 
2677c478bd9Sstevel@tonic-gate static void
2687c478bd9Sstevel@tonic-gate store_fetch_initspace()
2697c478bd9Sstevel@tonic-gate {
2707c478bd9Sstevel@tonic-gate 	space_hash = mod_hash_create_strhash(space_hash_name,
271986fd29aSsetje 	    space_hash_nchains, mod_hash_null_valdtor);
2727c478bd9Sstevel@tonic-gate 	ASSERT(space_hash);
2737c478bd9Sstevel@tonic-gate }
2747c478bd9Sstevel@tonic-gate 
2757c478bd9Sstevel@tonic-gate int
2767c478bd9Sstevel@tonic-gate space_store(char *key, uintptr_t ptr)
2777c478bd9Sstevel@tonic-gate {
2787c478bd9Sstevel@tonic-gate 	char *s;
2797c478bd9Sstevel@tonic-gate 	int rval;
2807c478bd9Sstevel@tonic-gate 	size_t l;
2817c478bd9Sstevel@tonic-gate 
2827c478bd9Sstevel@tonic-gate 	/* some sanity checks first */
2837c478bd9Sstevel@tonic-gate 	if (key == NULL) {
2847c478bd9Sstevel@tonic-gate 		return (-1);
2857c478bd9Sstevel@tonic-gate 	}
2867c478bd9Sstevel@tonic-gate 	l = (size_t)strlen(key);
2877c478bd9Sstevel@tonic-gate 	if (l == 0) {
2887c478bd9Sstevel@tonic-gate 		return (-1);
2897c478bd9Sstevel@tonic-gate 	}
2907c478bd9Sstevel@tonic-gate 
2917c478bd9Sstevel@tonic-gate 	/* increment for null terminator */
2927c478bd9Sstevel@tonic-gate 	l++;
2937c478bd9Sstevel@tonic-gate 
2947c478bd9Sstevel@tonic-gate 	/* alloc space for the string, mod_hash_insert will deallocate */
2957c478bd9Sstevel@tonic-gate 	s = kmem_alloc(l, KM_SLEEP);
2967c478bd9Sstevel@tonic-gate 	bcopy(key, s, l);
2977c478bd9Sstevel@tonic-gate 
2987c478bd9Sstevel@tonic-gate 	rval = mod_hash_insert(space_hash,
299986fd29aSsetje 	    (mod_hash_key_t)s, (mod_hash_val_t)ptr);
3007c478bd9Sstevel@tonic-gate 
3017c478bd9Sstevel@tonic-gate 	switch (rval) {
3027c478bd9Sstevel@tonic-gate 	case 0:
3037c478bd9Sstevel@tonic-gate 		break;
3047c478bd9Sstevel@tonic-gate #ifdef DEBUG
3057c478bd9Sstevel@tonic-gate 	case MH_ERR_DUPLICATE:
3067c478bd9Sstevel@tonic-gate 		cmn_err(CE_WARN, "space_store: duplicate key %s", key);
3077c478bd9Sstevel@tonic-gate 		rval = -1;
3087c478bd9Sstevel@tonic-gate 		break;
3097c478bd9Sstevel@tonic-gate 	case MH_ERR_NOMEM:
3107c478bd9Sstevel@tonic-gate 		cmn_err(CE_WARN, "space_store: no mem for key %s", key);
3117c478bd9Sstevel@tonic-gate 		rval = -1;
3127c478bd9Sstevel@tonic-gate 		break;
3137c478bd9Sstevel@tonic-gate 	default:
3147c478bd9Sstevel@tonic-gate 		cmn_err(CE_WARN, "space_store: unspecified error for key %s",
3157c478bd9Sstevel@tonic-gate 		    key);
3167c478bd9Sstevel@tonic-gate 		rval = -1;
3177c478bd9Sstevel@tonic-gate 		break;
3187c478bd9Sstevel@tonic-gate #else
3197c478bd9Sstevel@tonic-gate 	default:
3207c478bd9Sstevel@tonic-gate 		rval = -1;
3217c478bd9Sstevel@tonic-gate 		break;
3227c478bd9Sstevel@tonic-gate #endif
3237c478bd9Sstevel@tonic-gate 	}
3247c478bd9Sstevel@tonic-gate 
3257c478bd9Sstevel@tonic-gate 	return (rval);
3267c478bd9Sstevel@tonic-gate }
3277c478bd9Sstevel@tonic-gate 
3287c478bd9Sstevel@tonic-gate uintptr_t
3297c478bd9Sstevel@tonic-gate space_fetch(char *key)
3307c478bd9Sstevel@tonic-gate {
3317c478bd9Sstevel@tonic-gate 	uintptr_t ptr = 0;
3327c478bd9Sstevel@tonic-gate 	mod_hash_val_t val;
3337c478bd9Sstevel@tonic-gate 	int rval;
3347c478bd9Sstevel@tonic-gate 
3357c478bd9Sstevel@tonic-gate 	if (key) {
3367c478bd9Sstevel@tonic-gate 		rval = mod_hash_find(space_hash, (mod_hash_key_t)key, &val);
3377c478bd9Sstevel@tonic-gate 		if (rval == 0) {
3387c478bd9Sstevel@tonic-gate 			ptr = (uintptr_t)val;
3397c478bd9Sstevel@tonic-gate 		}
3407c478bd9Sstevel@tonic-gate 	}
3417c478bd9Sstevel@tonic-gate 
3427c478bd9Sstevel@tonic-gate 	return (ptr);
3437c478bd9Sstevel@tonic-gate }
3447c478bd9Sstevel@tonic-gate 
3457c478bd9Sstevel@tonic-gate void
3467c478bd9Sstevel@tonic-gate space_free(char *key)
3477c478bd9Sstevel@tonic-gate {
3487c478bd9Sstevel@tonic-gate 	if (key) {
3497c478bd9Sstevel@tonic-gate 		(void) mod_hash_destroy(space_hash, (mod_hash_key_t)key);
3507c478bd9Sstevel@tonic-gate 	}
3517c478bd9Sstevel@tonic-gate }
3527c478bd9Sstevel@tonic-gate 
3537c478bd9Sstevel@tonic-gate /*
3547c478bd9Sstevel@tonic-gate  * Support for CRC32.  At present all calculations are done in simple
3557c478bd9Sstevel@tonic-gate  * macros, so all we need is somewhere to declare the global lookup table.
3567c478bd9Sstevel@tonic-gate  */
3577c478bd9Sstevel@tonic-gate 
3587c478bd9Sstevel@tonic-gate #include <sys/crc32.h>
3597c478bd9Sstevel@tonic-gate 
3607c478bd9Sstevel@tonic-gate const uint32_t crc32_table[256] = { CRC32_TABLE };
3614b46d1efSkrgopi 
3624b46d1efSkrgopi /*
363*da14cebeSEric Cheng  * We need to fanout load from NIC which can overwhelm a single CPU.
364*da14cebeSEric Cheng  * This becomes especially important on systems having slow CPUs
365*da14cebeSEric Cheng  * (sun4v architecture). mac_soft_ring_enable is false on all
366*da14cebeSEric Cheng  * systems except sun4v. On sun4v, they get enabled by default (see
367*da14cebeSEric Cheng  * sun4v/os/mach_startup.c).
3684b46d1efSkrgopi  */
369*da14cebeSEric Cheng boolean_t	mac_soft_ring_enable = B_FALSE;
3706cefaae1SJack Meng 
3716cefaae1SJack Meng /*
3726cefaae1SJack Meng  * Global iscsi boot prop
3736cefaae1SJack Meng  */
3746cefaae1SJack Meng ib_boot_prop_t	*iscsiboot_prop = NULL;
375