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 #include <sys/types.h> 31 #include <sys/ksynch.h> 32 #include <sys/stream.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #ifdef _KERNEL 39 40 /* 41 * Persistent information about the capabilities of transport providers. 42 * This structure is for the internal use of sockfs and timod. Because 43 * bitfield operations are not atomic, the lock must be used to avoid 44 * inconsistencies. 45 */ 46 typedef struct tpi_provinfo { 47 struct tpi_provinfo *tpi_next; 48 void *tpi_key; 49 size_t tpi_keylen; 50 kmutex_t tpi_lock; 51 uint32_t tpi_capability : 2, 52 tpi_myname : 2, 53 tpi_peername : 2, 54 _tpi_unused : 26; 55 } tpi_provinfo_t; 56 57 /* 58 * Possible values for the above 2-bitfields. A capability is either 59 * supported, unsupported or unknown. 60 */ 61 #define PI_DONTKNOW 0 62 #define PI_NO 1 63 #define PI_YES 2 64 65 extern void tpi_init(void); 66 extern tpi_provinfo_t *tpi_findprov(queue_t *); 67 68 #define PI_PROVLOCK(tp) mutex_enter(&(tp)->tpi_lock) 69 #define PI_PROVUNLOCK(tp) mutex_exit(&(tp)->tpi_lock) 70 71 extern mblk_t *tpi_ack_alloc(mblk_t *, size_t, uchar_t, t_scalar_t); 72 73 #endif /* _KERNEL */ 74 75 #ifdef __cplusplus 76 } 77 #endif 78 79 #endif /* _SYS_SUNTPI_H */ 80