[apple/xnu.git] / bsd / net / pktsched / pktsched_tcq.h

/*
 * Copyright (c) 2011-2012 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

#ifndef _NET_PKTSCHED_PKTSCHED_TCQ_H_
#define	_NET_PKTSCHED_PKTSCHED_TCQ_H_

#ifdef PRIVATE
#include <net/pktsched/pktsched.h>
#include <net/classq/classq.h>
#include <net/classq/classq_red.h>
#include <net/classq/classq_rio.h>
#include <net/classq/classq_blue.h>
#include <net/classq/classq_sfb.h>

#ifdef __cplusplus
extern "C" {
#endif

#define	TCQ_MAXPRI	4	/* upper limit of the number of priorities */

/* tcq class flags */
#define	TQCF_RED		0x0001	/* use RED */
#define	TQCF_ECN		0x0002  /* use ECN with RED/BLUE/SFB */
#define	TQCF_RIO		0x0004  /* use RIO */
#define	TQCF_CLEARDSCP		0x0010  /* clear diffserv codepoint */
#define	TQCF_BLUE		0x0100	/* use BLUE */
#define	TQCF_SFB		0x0200	/* use SFB */
#define	TQCF_FLOWCTL		0x0400	/* enable flow control advisories */
#define	TQCF_DEFAULTCLASS	0x1000	/* default class */
#define TQCF_DELAYBASED		0x2000	/* queue sizing is delay based */
#ifdef BSD_KERNEL_PRIVATE
#define	TQCF_LAZY		0x10000000 /* on-demand resource allocation */
#endif /* BSD_KERNEL_PRIVATE */

#define	TQCF_USERFLAGS							\
	(TQCF_RED | TQCF_ECN | TQCF_RIO | TQCF_CLEARDSCP | TQCF_BLUE |	\
	TQCF_SFB | TQCF_FLOWCTL | TQCF_DEFAULTCLASS)

#ifdef BSD_KERNEL_PRIVATE
#define	TQCF_BITS \
	"\020\1RED\2ECN\3RIO\5CLEARDSCP\11BLUE\12SFB\13FLOWCTL\15DEFAULT" \
	"\35LAZY"
#else
#define	TQCF_BITS \
	"\020\1RED\2ECN\3RIO\5CLEARDSCP\11BLUE\12SFB\13FLOWCTL"
#endif /* !BSD_KERNEL_PRIVATE */

struct tcq_classstats {
	u_int32_t		class_handle;
	u_int32_t		priority;

	u_int32_t		qlength;
	u_int32_t		qlimit;
	u_int32_t		period;
	struct pktcntr		xmitcnt;  /* transmitted packet counter */
	struct pktcntr		dropcnt;  /* dropped packet counter */

	/* RED, RIO, BLUE, SFB related info */
	classq_type_t		qtype;
	union {
		/* RIO has 3 red stats */
		struct red_stats	red[RIO_NDROPPREC];
		struct blue_stats	blue;
		struct sfb_stats	sfb;
	};
	classq_state_t		qstate;
};

#ifdef BSD_KERNEL_PRIVATE
struct tcq_class {
	u_int32_t	cl_handle;	/* class handle */
	class_queue_t	cl_q;		/* class queue structure */
	u_int32_t	cl_qflags;	/* class queue flags */
	union {
		void		*ptr;
		struct red	*red;	/* RED state */
		struct rio	*rio;	/* RIO state */
		struct blue	*blue;	/* BLUE state */
		struct sfb	*sfb;	/* SFB state */
	} cl_qalg;
	int32_t		cl_pri;		/* priority */
	u_int32_t	cl_flags;	/* class flags */
	struct tcq_if	*cl_tif;	/* back pointer to tif */

	/* statistics */
	u_int32_t	cl_period;	/* backlog period */
	struct pktcntr  cl_xmitcnt;	/* transmitted packet counter */
	struct pktcntr  cl_dropcnt;	/* dropped packet counter */
};

#define	cl_red	cl_qalg.red
#define	cl_rio	cl_qalg.rio
#define	cl_blue	cl_qalg.blue
#define	cl_sfb	cl_qalg.sfb

/* tcq_if flags */
#define	TCQIFF_ALTQ		0x1	/* configured via PF/ALTQ */

/*
 * tcq interface state
 */
struct tcq_if {
	struct ifclassq		*tif_ifq;	/* backpointer to ifclassq */
	int			tif_maxpri;	/* max priority in use */
	u_int32_t		tif_flags;	/* flags */
	u_int32_t		tif_throttle;	/* throttling level */
	struct tcq_class	*tif_default;	/* default class */
	struct tcq_class	*tif_classes[TCQ_MAXPRI]; /* classes */
};

#define	TCQIF_IFP(_tif)		((_tif)->tif_ifq->ifcq_ifp)

struct if_ifclassq_stats;

extern void tcq_init(void);
extern struct tcq_if *tcq_alloc(struct ifnet *, int, boolean_t);
extern int tcq_destroy(struct tcq_if *);
extern void tcq_purge(struct tcq_if *);
extern void tcq_event(struct tcq_if *, cqev_t);
extern int tcq_add_queue(struct tcq_if *, int, u_int32_t, int, u_int32_t,
    struct tcq_class **);
extern int tcq_remove_queue(struct tcq_if *, u_int32_t);
extern int tcq_get_class_stats(struct tcq_if *, u_int32_t,
    struct tcq_classstats *);
extern int tcq_enqueue(struct tcq_if *, struct tcq_class *, struct mbuf *,
    struct pf_mtag *);
extern struct mbuf *tcq_dequeue_tc(struct tcq_if *, mbuf_svc_class_t,
    cqdq_op_t);
extern int tcq_setup_ifclassq(struct ifclassq *, u_int32_t);
extern int tcq_teardown_ifclassq(struct ifclassq *ifq);
extern int tcq_getqstats_ifclassq(struct ifclassq *, u_int32_t qid,
    struct if_ifclassq_stats *);
#endif /* BSD_KERNEL_PRIVATE */
#ifdef __cplusplus
}
#endif
#endif /* PRIVATE */
#endif /* _NET_PKTSCHED_PKTSCHED_TCQ_H_ */
Commit	Line	Data
316670eb A	1	/*
	2	* Copyright (c) 2011-2012 Apple Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28
	29	#ifndef _NET_PKTSCHED_PKTSCHED_TCQ_H_
	30	#define _NET_PKTSCHED_PKTSCHED_TCQ_H_
	31
	32	#ifdef PRIVATE
	33	#include <net/pktsched/pktsched.h>
	34	#include <net/classq/classq.h>
	35	#include <net/classq/classq_red.h>
	36	#include <net/classq/classq_rio.h>
	37	#include <net/classq/classq_blue.h>
	38	#include <net/classq/classq_sfb.h>
	39
	40	#ifdef __cplusplus
	41	extern "C" {
	42	#endif
	43
	44	#define TCQ_MAXPRI 4 /* upper limit of the number of priorities */
	45
	46	/* tcq class flags */
	47	#define TQCF_RED 0x0001 /* use RED */
	48	#define TQCF_ECN 0x0002 /* use ECN with RED/BLUE/SFB */
	49	#define TQCF_RIO 0x0004 /* use RIO */
	50	#define TQCF_CLEARDSCP 0x0010 /* clear diffserv codepoint */
	51	#define TQCF_BLUE 0x0100 /* use BLUE */
	52	#define TQCF_SFB 0x0200 /* use SFB */
	53	#define TQCF_FLOWCTL 0x0400 /* enable flow control advisories */
	54	#define TQCF_DEFAULTCLASS 0x1000 /* default class */
fe8ab488	55	#define TQCF_DELAYBASED 0x2000 /* queue sizing is delay based */
316670eb A	56	#ifdef BSD_KERNEL_PRIVATE
	57	#define TQCF_LAZY 0x10000000 /* on-demand resource allocation */
	58	#endif /* BSD_KERNEL_PRIVATE */
	59
	60	#define TQCF_USERFLAGS \
	61	(TQCF_RED \| TQCF_ECN \| TQCF_RIO \| TQCF_CLEARDSCP \| TQCF_BLUE \| \
	62	TQCF_SFB \| TQCF_FLOWCTL \| TQCF_DEFAULTCLASS)
	63
	64	#ifdef BSD_KERNEL_PRIVATE
	65	#define TQCF_BITS \
	66	"\020\1RED\2ECN\3RIO\5CLEARDSCP\11BLUE\12SFB\13FLOWCTL\15DEFAULT" \
	67	"\35LAZY"
	68	#else
	69	#define TQCF_BITS \
	70	"\020\1RED\2ECN\3RIO\5CLEARDSCP\11BLUE\12SFB\13FLOWCTL"
	71	#endif /* !BSD_KERNEL_PRIVATE */
	72
	73	struct tcq_classstats {
	74	u_int32_t class_handle;
	75	u_int32_t priority;
	76
	77	u_int32_t qlength;
	78	u_int32_t qlimit;
	79	u_int32_t period;
	80	struct pktcntr xmitcnt; /* transmitted packet counter */
	81	struct pktcntr dropcnt; /* dropped packet counter */
	82
	83	/* RED, RIO, BLUE, SFB related info */
	84	classq_type_t qtype;
	85	union {
	86	/* RIO has 3 red stats */
	87	struct red_stats red[RIO_NDROPPREC];
	88	struct blue_stats blue;
	89	struct sfb_stats sfb;
	90	};
	91	classq_state_t qstate;
	92	};
	93
	94	#ifdef BSD_KERNEL_PRIVATE
	95	struct tcq_class {
	96	u_int32_t cl_handle; /* class handle */
	97	class_queue_t cl_q; /* class queue structure */
	98	u_int32_t cl_qflags; /* class queue flags */
	99	union {
	100	void *ptr;
	101	struct red red; / RED state */
	102	struct rio rio; / RIO state */
	103	struct blue blue; / BLUE state */
	104	struct sfb sfb; / SFB state */
	105	} cl_qalg;
	106	int32_t cl_pri; /* priority */
	107	u_int32_t cl_flags; /* class flags */
	108	struct tcq_if cl_tif; / back pointer to tif */
	109
	110	/* statistics */
	111	u_int32_t cl_period; /* backlog period */
	112	struct pktcntr cl_xmitcnt; /* transmitted packet counter */
	113	struct pktcntr cl_dropcnt; /* dropped packet counter */
	114	};
	115
	116	#define cl_red cl_qalg.red
	117	#define cl_rio cl_qalg.rio
	118	#define cl_blue cl_qalg.blue
	119	#define cl_sfb cl_qalg.sfb
120
121	/* tcq_if flags */
122	#define TCQIFF_ALTQ 0x1 /* configured via PF/ALTQ */
123
124	/*
125	* tcq interface state
126	*/
127	struct tcq_if {
128	struct ifclassq tif_ifq; / backpointer to ifclassq */
129	int tif_maxpri; /* max priority in use */
130	u_int32_t tif_flags; /* flags */
131	u_int32_t tif_throttle; /* throttling level */
132	struct tcq_class tif_default; / default class */
133	struct tcq_class tif_classes[TCQ_MAXPRI]; / classes */
134	};
135
136	#define TCQIF_IFP(_tif) ((_tif)->tif_ifq->ifcq_ifp)
137
138	struct if_ifclassq_stats;
139
140	extern void tcq_init(void);
141	extern struct tcq_if tcq_alloc(struct ifnet , int, boolean_t);
142	extern int tcq_destroy(struct tcq_if *);
143	extern void tcq_purge(struct tcq_if *);
144	extern void tcq_event(struct tcq_if *, cqev_t);
145	extern int tcq_add_queue(struct tcq_if *, int, u_int32_t, int, u_int32_t,
146	struct tcq_class **);
147	extern int tcq_remove_queue(struct tcq_if *, u_int32_t);
148	extern int tcq_get_class_stats(struct tcq_if *, u_int32_t,
149	struct tcq_classstats *);
150	extern int tcq_enqueue(struct tcq_if , struct tcq_class , struct mbuf *,
151	struct pf_mtag *);
152	extern struct mbuf tcq_dequeue_tc(struct tcq_if , mbuf_svc_class_t,
153	cqdq_op_t);
154	extern int tcq_setup_ifclassq(struct ifclassq *, u_int32_t);
155	extern int tcq_teardown_ifclassq(struct ifclassq *ifq);
156	extern int tcq_getqstats_ifclassq(struct ifclassq *, u_int32_t qid,
157	struct if_ifclassq_stats *);
158	#endif /* BSD_KERNEL_PRIVATE */
159	#ifdef __cplusplus
160	}
161	#endif
162	#endif /* PRIVATE */
163	#endif /* _NET_PKTSCHED_PKTSCHED_TCQ_H_ */