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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_SQUEUE_H 27 #define _SYS_SQUEUE_H 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 #include <sys/types.h> 34 #include <sys/processor.h> 35 #include <sys/stream.h> 36 37 struct squeue_s; 38 typedef struct squeue_s squeue_t; 39 40 #define SET_SQUEUE(mp, proc, arg) { \ 41 ASSERT((mp)->b_prev == NULL); \ 42 ASSERT((mp)->b_next == NULL); \ 43 (mp)->b_queue = (queue_t *)(proc); \ 44 (mp)->b_prev = (mblk_t *)(arg); \ 45 } 46 47 #define GET_SQUEUE(mp) ((conn_t *)((mp)->b_prev))->conn_sqp 48 49 #define SQ_FILL 0x0001 50 #define SQ_NODRAIN 0x0002 51 #define SQ_PROCESS 0x0004 52 53 #define SQUEUE_ENTER(sqp, head, tail, cnt, flag, tag) { \ 54 sqp->sq_enter(sqp, head, tail, cnt, flag, tag); \ 55 } 56 57 #define SQUEUE_ENTER_ONE(sqp, mp, proc, arg, flag, tag) { \ 58 ASSERT(mp->b_next == NULL); \ 59 ASSERT(mp->b_prev == NULL); \ 60 SET_SQUEUE(mp, proc, arg); \ 61 SQUEUE_ENTER(sqp, mp, mp, 1, flag, tag); \ 62 } 63 64 /* 65 * May be called only by a thread executing in the squeue. The thread must 66 * not continue to execute any code needing squeue protection after calling 67 * this macro. Please see the comments in squeue.c for more details. 68 */ 69 #define SQUEUE_SWITCH(connp, new_sqp) \ 70 (connp)->conn_sqp = new_sqp; 71 72 /* 73 * Facility-special private data in squeues. 74 */ 75 typedef enum { 76 SQPRIVATE_TCP, 77 SQPRIVATE_MAX 78 } sqprivate_t; 79 80 extern void squeue_init(void); 81 extern squeue_t *squeue_create(clock_t, pri_t); 82 extern void squeue_bind(squeue_t *, processorid_t); 83 extern void squeue_unbind(squeue_t *); 84 extern void squeue_enter(squeue_t *, mblk_t *, mblk_t *, 85 uint32_t, int, uint8_t); 86 extern uintptr_t *squeue_getprivate(squeue_t *, sqprivate_t); 87 88 struct conn_s; 89 extern int squeue_synch_enter(squeue_t *, struct conn_s *, mblk_t *); 90 extern void squeue_synch_exit(squeue_t *, struct conn_s *); 91 92 #ifdef __cplusplus 93 } 94 #endif 95 96 #endif /* _SYS_SQUEUE_H */ 97