1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1990-1998 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #ifndef _SYS_SUNTPI_H 28 #define _SYS_SUNTPI_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/types.h> 33 #include <sys/ksynch.h> 34 #include <sys/stream.h> 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 #ifdef _KERNEL 41 42 /* 43 * Persistent information about the capabilities of transport providers. 44 * This structure is for the internal use of sockfs and timod. Because 45 * bitfield operations are not atomic, the lock must be used to avoid 46 * inconsistencies. 47 */ 48 typedef struct tpi_provinfo { 49 struct tpi_provinfo *tpi_next; 50 void *tpi_key; 51 size_t tpi_keylen; 52 kmutex_t tpi_lock; 53 uint32_t tpi_capability : 2, 54 tpi_myname : 2, 55 tpi_peername : 2, 56 _tpi_unused : 26; 57 } tpi_provinfo_t; 58 59 /* 60 * Possible values for the above 2-bitfields. A capability is either 61 * supported, unsupported or unknown. 62 */ 63 #define PI_DONTKNOW 0 64 #define PI_NO 1 65 #define PI_YES 2 66 67 extern void tpi_init(void); 68 extern tpi_provinfo_t *tpi_findprov(queue_t *); 69 70 #define PI_PROVLOCK(tp) mutex_enter(&(tp)->tpi_lock) 71 #define PI_PROVUNLOCK(tp) mutex_exit(&(tp)->tpi_lock) 72 73 extern mblk_t *tpi_ack_alloc(mblk_t *, size_t, uchar_t, t_scalar_t); 74 75 #endif /* _KERNEL */ 76 77 #ifdef __cplusplus 78 } 79 #endif 80 81 #endif /* _SYS_SUNTPI_H */ 82