183 lines
6.7 KiB
C
183 lines
6.7 KiB
C
/*-
|
|
* Copyright (C) 1997-2003
|
|
* Sony Computer Science Laboratories Inc. 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 SONY CSL 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 SONY CSL 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.
|
|
*
|
|
* $KAME: if_altq.h,v 1.12 2005/04/13 03:44:25 suz Exp $
|
|
* $FreeBSD$
|
|
*/
|
|
#ifndef _ALTQ_IF_ALTQ_H_
|
|
#define _ALTQ_IF_ALTQ_H_
|
|
|
|
#include <sys/lock.h> /* XXX */
|
|
#include <sys/mutex.h> /* XXX */
|
|
#include <sys/event.h> /* XXX */
|
|
|
|
struct altq_pktattr; struct tb_regulator; struct top_cdnr;
|
|
|
|
/*
|
|
* Structure defining a queue for a network interface.
|
|
*/
|
|
struct ifaltq {
|
|
/* fields compatible with struct ifqueue */
|
|
struct mbuf *ifq_head;
|
|
struct mbuf *ifq_tail;
|
|
int ifq_len;
|
|
int ifq_maxlen;
|
|
struct mtx ifq_mtx;
|
|
|
|
/* driver owned queue (used for bulk dequeue and prepend) UNLOCKED */
|
|
struct mbuf *ifq_drv_head;
|
|
struct mbuf *ifq_drv_tail;
|
|
int ifq_drv_len;
|
|
int ifq_drv_maxlen;
|
|
|
|
/* alternate queueing related fields */
|
|
int altq_type; /* discipline type */
|
|
int altq_flags; /* flags (e.g. ready, in-use) */
|
|
void *altq_disc; /* for discipline-specific use */
|
|
struct ifnet *altq_ifp; /* back pointer to interface */
|
|
|
|
int (*altq_enqueue)(struct ifaltq *, struct mbuf *,
|
|
struct altq_pktattr *);
|
|
struct mbuf *(*altq_dequeue)(struct ifaltq *, int);
|
|
int (*altq_request)(struct ifaltq *, int, void *);
|
|
|
|
/* classifier fields */
|
|
void *altq_clfier; /* classifier-specific use */
|
|
void *(*altq_classify)(void *, struct mbuf *, int);
|
|
|
|
/* token bucket regulator */
|
|
struct tb_regulator *altq_tbr;
|
|
|
|
/* input traffic conditioner (doesn't belong to the output queue...) */
|
|
struct top_cdnr *altq_cdnr;
|
|
};
|
|
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/*
|
|
* packet attributes used by queueing disciplines.
|
|
* pattr_class is a discipline-dependent scheduling class that is
|
|
* set by a classifier.
|
|
* pattr_hdr and pattr_af may be used by a discipline to access
|
|
* the header within a mbuf. (e.g. ECN needs to update the CE bit)
|
|
* note that pattr_hdr could be stale after m_pullup, though link
|
|
* layer output routines usually don't use m_pullup. link-level
|
|
* compression also invalidates these fields. thus, pattr_hdr needs
|
|
* to be verified when a discipline touches the header.
|
|
*/
|
|
struct altq_pktattr {
|
|
void *pattr_class; /* sched class set by classifier */
|
|
int pattr_af; /* address family */
|
|
caddr_t pattr_hdr; /* saved header position in mbuf */
|
|
};
|
|
|
|
/*
|
|
* mbuf tag to carry a queue id (and hints for ECN).
|
|
*/
|
|
struct altq_tag {
|
|
u_int32_t qid; /* queue id */
|
|
/* hints for ecn */
|
|
int af; /* address family */
|
|
void *hdr; /* saved header position in mbuf */
|
|
};
|
|
|
|
/*
|
|
* a token-bucket regulator limits the rate that a network driver can
|
|
* dequeue packets from the output queue.
|
|
* modern cards are able to buffer a large amount of packets and dequeue
|
|
* too many packets at a time. this bursty dequeue behavior makes it
|
|
* impossible to schedule packets by queueing disciplines.
|
|
* a token-bucket is used to control the burst size in a device
|
|
* independent manner.
|
|
*/
|
|
struct tb_regulator {
|
|
int64_t tbr_rate; /* (scaled) token bucket rate */
|
|
int64_t tbr_depth; /* (scaled) token bucket depth */
|
|
|
|
int64_t tbr_token; /* (scaled) current token */
|
|
int64_t tbr_filluptime; /* (scaled) time to fill up bucket */
|
|
u_int64_t tbr_last; /* last time token was updated */
|
|
|
|
int tbr_lastop; /* last dequeue operation type
|
|
needed for poll-and-dequeue */
|
|
};
|
|
|
|
/* if_altqflags */
|
|
#define ALTQF_READY 0x01 /* driver supports alternate queueing */
|
|
#define ALTQF_ENABLED 0x02 /* altq is in use */
|
|
#define ALTQF_CLASSIFY 0x04 /* classify packets */
|
|
#define ALTQF_CNDTNING 0x08 /* altq traffic conditioning is enabled */
|
|
#define ALTQF_DRIVER1 0x40 /* driver specific */
|
|
|
|
/* if_altqflags set internally only: */
|
|
#define ALTQF_CANTCHANGE (ALTQF_READY)
|
|
|
|
/* altq_dequeue 2nd arg */
|
|
#define ALTDQ_REMOVE 1 /* dequeue mbuf from the queue */
|
|
#define ALTDQ_POLL 2 /* don't dequeue mbuf from the queue */
|
|
|
|
/* altq request types (currently only purge is defined) */
|
|
#define ALTRQ_PURGE 1 /* purge all packets */
|
|
|
|
#define ALTQ_IS_READY(ifq) ((ifq)->altq_flags & ALTQF_READY)
|
|
#define ALTQ_IS_ENABLED(ifq) ((ifq)->altq_flags & ALTQF_ENABLED)
|
|
#define ALTQ_NEEDS_CLASSIFY(ifq) ((ifq)->altq_flags & ALTQF_CLASSIFY)
|
|
#define ALTQ_IS_CNDTNING(ifq) ((ifq)->altq_flags & ALTQF_CNDTNING)
|
|
|
|
#define ALTQ_SET_CNDTNING(ifq) ((ifq)->altq_flags |= ALTQF_CNDTNING)
|
|
#define ALTQ_CLEAR_CNDTNING(ifq) ((ifq)->altq_flags &= ~ALTQF_CNDTNING)
|
|
#define ALTQ_IS_ATTACHED(ifq) ((ifq)->altq_disc != NULL)
|
|
|
|
#define ALTQ_ENQUEUE(ifq, m, pa, err) \
|
|
(err) = (*(ifq)->altq_enqueue)((ifq),(m),(pa))
|
|
#define ALTQ_DEQUEUE(ifq, m) \
|
|
(m) = (*(ifq)->altq_dequeue)((ifq), ALTDQ_REMOVE)
|
|
#define ALTQ_POLL(ifq, m) \
|
|
(m) = (*(ifq)->altq_dequeue)((ifq), ALTDQ_POLL)
|
|
#define ALTQ_PURGE(ifq) \
|
|
(void)(*(ifq)->altq_request)((ifq), ALTRQ_PURGE, (void *)0)
|
|
#define ALTQ_IS_EMPTY(ifq) ((ifq)->ifq_len == 0)
|
|
#define TBR_IS_ENABLED(ifq) ((ifq)->altq_tbr != NULL)
|
|
|
|
extern int altq_attach(struct ifaltq *, int, void *,
|
|
int (*)(struct ifaltq *, struct mbuf *,
|
|
struct altq_pktattr *),
|
|
struct mbuf *(*)(struct ifaltq *, int),
|
|
int (*)(struct ifaltq *, int, void *),
|
|
void *,
|
|
void *(*)(void *, struct mbuf *, int));
|
|
extern int altq_detach(struct ifaltq *);
|
|
extern int altq_enable(struct ifaltq *);
|
|
extern int altq_disable(struct ifaltq *);
|
|
extern struct mbuf *(*tbr_dequeue_ptr)(struct ifaltq *, int);
|
|
extern int (*altq_input)(struct mbuf *, int);
|
|
#if 0 /* ALTQ3_CLFIER_COMPAT */
|
|
void altq_etherclassify(struct ifaltq *, struct mbuf *, struct altq_pktattr *);
|
|
#endif
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _ALTQ_IF_ALTQ_H_ */
|