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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_SQUEUE_IMPL_H
#define _SYS_SQUEUE_IMPL_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/squeue.h>
#define SQ_NAMELEN 31
/*
* SQUEUE_DEBUG: If defined as 1, special code is compiled in which records
* additional information aiding debugging is recorded in squeue.
*
* SQUEUE_PROFILE: If defined as 1, special code is compiled in which collects
* various squeue statistics and exports them as kstats.
*
* Ideally we would like both SQUEUE_DEBUG and SQUEUE_PROFILE to be always set,
* but it affects performance, so they are enabled on DEBUG kernels and disabled
* on non-DEBUG by default.
*/
#ifdef DEBUG
#define SQUEUE_DEBUG 1
#define SQUEUE_PROFILE 1
#else
#define SQUEUE_DEBUG 0
#define SQUEUE_PROFILE 0
#endif
typedef struct sqstat_s {
uint_t sq_max_qlen;
uint_t sq_npackets_worker;
uint_t sq_npackets_intr;
uint_t sq_npackets_other;
uint_t sq_nqueued_intr;
uint_t sq_nqueued_other;
uint_t sq_ndrains_worker;
uint_t sq_ndrains_intr;
uint_t sq_ndrains_other;
hrtime_t sq_time_worker;
hrtime_t sq_time_intr;
hrtime_t sq_time_other;
} sqstat_t;
struct squeue_s {
/* Keep the most used members 64bytes cache aligned */
kmutex_t sq_lock; /* lock before using any member */
uint32_t sq_state; /* state flags and message count */
int sq_count; /* # of mblocks in squeue */
mblk_t *sq_first; /* first mblk chain or NULL */
mblk_t *sq_last; /* last mblk chain or NULL */
clock_t sq_awaken; /* time async thread was awakened */
kthread_t *sq_run; /* Current thread processing sq */
void *sq_rx_ring;
clock_t sq_avg_drain_time; /* Avg time to drain a pkt */
processorid_t sq_bind; /* processor to bind to */
kcondvar_t sq_async; /* async thread blocks on */
clock_t sq_wait; /* lbolts to wait after a fill() */
uintptr_t sq_private[SQPRIVATE_MAX];
timeout_id_t sq_tid; /* timer id of pending timeout() */
kthread_t *sq_worker; /* kernel thread id */
char sq_name[SQ_NAMELEN + 1];
#if SQUEUE_DEBUG
/* Debug-only fields */
int sq_isintr; /* serviced by interrupt */
mblk_t *sq_curmp;
void (*sq_curproc)();
conn_t *sq_connp;
uchar_t sq_tag;
#endif
#if SQUEUE_PROFILE
/* Profiling fields */
kstat_t *sq_kstat; /* exported statistics */
sqstat_t sq_stats;
#endif
};
/*
* State flags.
* Note: The MDB IP module depends on the values of these flags.
*/
#define SQS_PROC 0x0001 /* being processed */
#define SQS_WORKER 0x0002 /* worker thread */
#define SQS_ENTER 0x0004 /* enter thread */
#define SQS_FAST 0x0008 /* enter-fast thread */
#define SQS_USER 0x0010 /* A non interrupt user */
#define SQS_BOUND 0x0020 /* Worker thread is bound */
#define SQS_PROFILE 0x0040 /* Enable profiling */
#define SQS_REENTER 0x0080 /* Re entered thread */
#define SQS_TMO_PROG 0x0100 /* Timeout is being set */
#define SQS_POLL_CAPAB 0x0200 /* Squeue can control interrupts */
#define SQS_NO_INTR 0x0400 /* Interrupts currently disabled */
#define SQS_ILL_BOUND 0x0800 /* Squeue bound to an ill */
#define SQS_GET_PKTS 0x1000 /* Moving pkts from NIC in progress */
#define SQS_DEFAULT 0x2000 /* The default squeue for the CPU */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_SQUEUE_IMPL_H */
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