freebsd-skq/sys/sys/gtaskqueue.h
Stephen Hurd 23ac9029f9 Update iflib to support more NIC designs
- Move group task queue into kern/subr_gtaskqueue.c
- Change intr_enable to return an int so it can be detected if it's not
  implemented
- Allow different TX/RX queues per set to be different sizes
- Don't split up TX mbufs before transmit
- Allow a completion queue for TX as well as RX
- Pass the RX budget to isc_rxd_available() to allow an earlier return
  and avoid multiple calls

Submitted by:	shurd
Reviewed by:	gallatin
Approved by:	scottl
Differential Revision:	https://reviews.freebsd.org/D7393
2016-08-12 21:29:44 +00:00

126 lines
4.3 KiB
C

/*-
* Copyright (c) 2014 Jeffrey Roberson <jeff@freebsd.org>
* Copyright (c) 2016 Matthew Macy <mmacy@nextbsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_GTASKQUEUE_H_
#define _SYS_GTASKQUEUE_H_
#include <sys/taskqueue.h>
#ifndef _KERNEL
#error "no user-servicable parts inside"
#endif
struct gtaskqueue;
typedef void (*gtaskqueue_enqueue_fn)(void *context);
/*
* Taskqueue groups. Manages dynamic thread groups and irq binding for
* device and other tasks.
*/
void gtaskqueue_block(struct gtaskqueue *queue);
void gtaskqueue_unblock(struct gtaskqueue *queue);
int gtaskqueue_cancel(struct gtaskqueue *queue, struct gtask *gtask);
void gtaskqueue_drain(struct gtaskqueue *queue, struct gtask *task);
void gtaskqueue_drain_all(struct gtaskqueue *queue);
int grouptaskqueue_enqueue(struct gtaskqueue *queue, struct gtask *task);
void taskqgroup_attach(struct taskqgroup *qgroup, struct grouptask *grptask,
void *uniq, int irq, char *name);
int taskqgroup_attach_cpu(struct taskqgroup *qgroup, struct grouptask *grptask,
void *uniq, int cpu, int irq, char *name);
void taskqgroup_detach(struct taskqgroup *qgroup, struct grouptask *gtask);
struct taskqgroup *taskqgroup_create(char *name);
void taskqgroup_destroy(struct taskqgroup *qgroup);
int taskqgroup_adjust(struct taskqgroup *qgroup, int cnt, int stride);
#define TASK_ENQUEUED 0x1
#define TASK_SKIP_WAKEUP 0x2
#define GTASK_INIT(task, flags, priority, func, context) do { \
(task)->ta_flags = flags; \
(task)->ta_priority = (priority); \
(task)->ta_func = (func); \
(task)->ta_context = (context); \
} while (0)
#define GROUPTASK_INIT(gtask, priority, func, context) \
GTASK_INIT(&(gtask)->gt_task, TASK_SKIP_WAKEUP, priority, func, context)
#define GROUPTASK_ENQUEUE(gtask) \
grouptaskqueue_enqueue((gtask)->gt_taskqueue, &(gtask)->gt_task)
#define TASKQGROUP_DECLARE(name) \
extern struct taskqgroup *qgroup_##name
#ifdef EARLY_AP_STARTUP
#define TASKQGROUP_DEFINE(name, cnt, stride) \
\
struct taskqgroup *qgroup_##name; \
\
static void \
taskqgroup_define_##name(void *arg) \
{ \
qgroup_##name = taskqgroup_create(#name); \
taskqgroup_adjust(qgroup_##name, (cnt), (stride)); \
} \
\
SYSINIT(taskqgroup_##name, SI_SUB_INIT_IF, SI_ORDER_FIRST, \
taskqgroup_define_##name, NULL)
#else
#define TASKQGROUP_DEFINE(name, cnt, stride) \
\
struct taskqgroup *qgroup_##name; \
\
static void \
taskqgroup_define_##name(void *arg) \
{ \
qgroup_##name = taskqgroup_create(#name); \
} \
\
SYSINIT(taskqgroup_##name, SI_SUB_INIT_IF, SI_ORDER_FIRST, \
taskqgroup_define_##name, NULL); \
\
static void \
taskqgroup_adjust_##name(void *arg) \
{ \
taskqgroup_adjust(qgroup_##name, (cnt), (stride)); \
} \
\
SYSINIT(taskqgroup_adj_##name, SI_SUB_SMP, SI_ORDER_ANY, \
taskqgroup_adjust_##name, NULL); \
\
struct __hack
#endif
TASKQGROUP_DECLARE(net);
#endif /* !_SYS_GTASKQUEUE_H_ */