static struct fairq_class *
fairq_class_create(struct fairq_if *fif, int pri, u_int32_t qlimit,
u_int64_t bandwidth, u_int32_t nbuckets, int flags, u_int64_t hogs_m1,
u_int64_t lssc_m1, u_int64_t lssc_d, u_int64_t lssc_m2, u_int32_t qid)
{
#pragma unused(lssc_d, lssc_m2)
struct ifnet *ifp;
struct ifclassq *ifq;
struct fairq_class *cl;
u_int32_t i;
IFCQ_LOCK_ASSERT_HELD(fif->fif_ifq);
/* Sanitize flags unless internally configured */
if (fif->fif_flags & FAIRQIFF_ALTQ)
flags &= FARF_USERFLAGS;
#if !CLASSQ_RED
if (flags & FARF_RED) {
log(LOG_ERR, "%s: %s RED not available!\n",
if_name(FAIRQIF_IFP(fif)), fairq_style(fif));
return (NULL);
}
#endif /* !CLASSQ_RED */
#if !CLASSQ_RIO
if (flags & FARF_RIO) {
log(LOG_ERR, "%s: %s RIO not available!\n",
if_name(FAIRQIF_IFP(fif)), fairq_style(fif));
return (NULL);
}
#endif /* CLASSQ_RIO */
#if !CLASSQ_BLUE
if (flags & FARF_BLUE) {
log(LOG_ERR, "%s: %s BLUE not available!\n",
if_name(FAIRQIF_IFP(fif)), fairq_style(fif));
return (NULL);
}
#endif /* CLASSQ_BLUE */
/* These are mutually exclusive */
if ((flags & (FARF_RED|FARF_RIO|FARF_BLUE|FARF_SFB)) &&
(flags & (FARF_RED|FARF_RIO|FARF_BLUE|FARF_SFB)) != FARF_RED &&
(flags & (FARF_RED|FARF_RIO|FARF_BLUE|FARF_SFB)) != FARF_RIO &&
(flags & (FARF_RED|FARF_RIO|FARF_BLUE|FARF_SFB)) != FARF_BLUE &&
(flags & (FARF_RED|FARF_RIO|FARF_BLUE|FARF_SFB)) != FARF_SFB) {
log(LOG_ERR, "%s: %s more than one RED|RIO|BLUE|SFB\n",
if_name(FAIRQIF_IFP(fif)), fairq_style(fif));
return (NULL);
}
if (bandwidth == 0 || (bandwidth / 8) == 0) {
log(LOG_ERR, "%s: %s invalid data rate %llu\n",
if_name(FAIRQIF_IFP(fif)), fairq_style(fif), bandwidth);
return (NULL);
}
if (nbuckets == 0)
nbuckets = 256;
if (nbuckets > FAIRQ_MAX_BUCKETS)
nbuckets = FAIRQ_MAX_BUCKETS;
/* enforce power-of-2 size */
while ((nbuckets ^ (nbuckets - 1)) != ((nbuckets << 1) - 1))
++nbuckets;
ifq = fif->fif_ifq;
ifp = FAIRQIF_IFP(fif);
if ((cl = fif->fif_classes[pri]) != NULL) {
/* modify the class instead of creating a new one */
if (cl->cl_head)
fairq_purgeq(fif, cl, 0, NULL, NULL);
#if CLASSQ_RIO
if (cl->cl_qtype == Q_RIO)
rio_destroy(cl->cl_rio);
#endif /* CLASSQ_RIO */
#if CLASSQ_RED
if (cl->cl_qtype == Q_RED)
red_destroy(cl->cl_red);
#endif /* CLASSQ_RED */
#if CLASSQ_BLUE
if (cl->cl_qtype == Q_BLUE)
blue_destroy(cl->cl_blue);
#endif /* CLASSQ_BLUE */
if (cl->cl_qtype == Q_SFB && cl->cl_sfb != NULL)
sfb_destroy(cl->cl_sfb);
cl->cl_qalg.ptr = NULL;
cl->cl_qtype = Q_DROPTAIL;
cl->cl_qstate = QS_RUNNING;
} else {
cl = zalloc(fairq_cl_zone);
if (cl == NULL)
goto err_ret;
bzero(cl, fairq_cl_size);
cl->cl_nbuckets = nbuckets;
cl->cl_nbucket_mask = nbuckets - 1;
cl->cl_buckets = _MALLOC(sizeof (struct fairq_bucket) *
cl->cl_nbuckets, M_DEVBUF, M_WAITOK|M_ZERO);
if (cl->cl_buckets == NULL)
goto err_buckets;
cl->cl_head = NULL;
}
fif->fif_classes[pri] = cl;
if (flags & FARF_DEFAULTCLASS)
fif->fif_default = cl;
if (qlimit == 0 || qlimit > IFCQ_MAXLEN(ifq)) {
qlimit = IFCQ_MAXLEN(ifq);
if (qlimit == 0)
qlimit = DEFAULT_QLIMIT; /* use default */
}
cl->cl_qlimit = qlimit;
for (i = 0; i < cl->cl_nbuckets; ++i) {
_qinit(&cl->cl_buckets[i].queue, Q_DROPTAIL, qlimit);
}
cl->cl_bandwidth = bandwidth / 8; /* cvt to bytes per second */
cl->cl_qtype = Q_DROPTAIL;
cl->cl_qstate = QS_RUNNING;
cl->cl_flags = flags;
cl->cl_pri = pri;
if (pri > fif->fif_maxpri)
fif->fif_maxpri = pri;
cl->cl_fif = fif;
cl->cl_handle = qid;
cl->cl_hogs_m1 = hogs_m1 / 8;
cl->cl_lssc_m1 = lssc_m1 / 8; /* NOT YET USED */
cl->cl_bw_current = 0;
if (flags & (FARF_RED|FARF_RIO|FARF_BLUE|FARF_SFB)) {
#if CLASSQ_RED || CLASSQ_RIO
u_int64_t ifbandwidth = ifnet_output_linkrate(ifp);
int pkttime;
#endif /* CLASSQ_RED || CLASSQ_RIO */
cl->cl_qflags = 0;
if (flags & FARF_ECN) {
if (flags & FARF_BLUE)
cl->cl_qflags |= BLUEF_ECN;
else if (flags & FARF_SFB)
cl->cl_qflags |= SFBF_ECN;
else if (flags & FARF_RED)
cl->cl_qflags |= REDF_ECN;
else if (flags & FARF_RIO)
cl->cl_qflags |= RIOF_ECN;
}
if (flags & FARF_FLOWCTL) {
if (flags & FARF_SFB)
cl->cl_qflags |= SFBF_FLOWCTL;
}
if (flags & FARF_CLEARDSCP) {
if (flags & FARF_RIO)
cl->cl_qflags |= RIOF_CLEARDSCP;
}
#if CLASSQ_RED || CLASSQ_RIO
/*
* XXX: RED & RIO should be watching link speed and MTU
* events and recompute pkttime accordingly.
*/
if (ifbandwidth < 8)
pkttime = 1000 * 1000 * 1000; /* 1 sec */
else
pkttime = (int64_t)ifp->if_mtu * 1000 * 1000 * 1000 /
(ifbandwidth / 8);
/* Test for exclusivity {RED,RIO,BLUE,SFB} was done above */
#if CLASSQ_RIO
if (flags & FARF_RIO) {
cl->cl_rio =
rio_alloc(ifp, 0, NULL, cl->cl_qflags, pkttime);
if (cl->cl_rio != NULL)
cl->cl_qtype = Q_RIO;
}
#endif /* CLASSQ_RIO */
#if CLASSQ_RED
if (flags & FARF_RED) {
cl->cl_red = red_alloc(ifp, 0, 0,
cl->cl_qlimit * 10/100,
cl->cl_qlimit * 30/100,
cl->cl_qflags, pkttime);
if (cl->cl_red != NULL)
cl->cl_qtype = Q_RED;
}
#endif /* CLASSQ_RED */
#endif /* CLASSQ_RED || CLASSQ_RIO */
#if CLASSQ_BLUE
if (flags & FARF_BLUE) {
cl->cl_blue = blue_alloc(ifp, 0, 0, cl->cl_qflags);
if (cl->cl_blue != NULL)
cl->cl_qtype = Q_BLUE;
}
#endif /* CLASSQ_BLUE */
if (flags & FARF_SFB) {
if (!(cl->cl_flags & FARF_LAZY))
cl->cl_sfb = sfb_alloc(ifp, cl->cl_handle,
cl->cl_qlimit, cl->cl_qflags);
if (cl->cl_sfb != NULL || (cl->cl_flags & FARF_LAZY))
cl->cl_qtype = Q_SFB;
}
}
if (pktsched_verbose) {
log(LOG_DEBUG, "%s: %s created qid=%d pri=%d qlimit=%d "
"flags=%b\n", if_name(ifp), fairq_style(fif),
cl->cl_handle, cl->cl_pri, cl->cl_qlimit, flags, FARF_BITS);
}
return (cl);
err_buckets:
if (cl->cl_buckets != NULL)
_FREE(cl->cl_buckets, M_DEVBUF);
err_ret:
if (cl != NULL) {
if (cl->cl_qalg.ptr != NULL) {
#if CLASSQ_RIO
if (cl->cl_qtype == Q_RIO)
rio_destroy(cl->cl_rio);
#endif /* CLASSQ_RIO */
#if CLASSQ_RED
if (cl->cl_qtype == Q_RED)
red_destroy(cl->cl_red);
#endif /* CLASSQ_RED */
#if CLASSQ_BLUE
if (cl->cl_qtype == Q_BLUE)
blue_destroy(cl->cl_blue);
#endif /* CLASSQ_BLUE */
if (cl->cl_qtype == Q_SFB && cl->cl_sfb != NULL)
sfb_destroy(cl->cl_sfb);
cl->cl_qalg.ptr = NULL;
cl->cl_qtype = Q_DROPTAIL;
cl->cl_qstate = QS_RUNNING;
}
zfree(fairq_cl_zone, cl);
}
return (NULL);
}
static struct priq_class *
priq_class_create(struct priq_if *pif, int pri, int qlimit, int flags, int qid)
{
struct priq_class *cl;
int s;
#ifndef ALTQ_RED
if (flags & PRCF_RED) {
#ifdef ALTQ_DEBUG
printf("priq_class_create: RED not configured for PRIQ!\n");
#endif
return (NULL);
}
#endif
if ((cl = pif->pif_classes[pri]) != NULL) {
/* modify the class instead of creating a new one */
s = splnet();
if (!qempty(cl->cl_q))
priq_purgeq(cl);
splx(s);
#ifdef ALTQ_RIO
if (q_is_rio(cl->cl_q))
rio_destroy((rio_t *)cl->cl_red);
#endif
#ifdef ALTQ_RED
if (q_is_red(cl->cl_q))
red_destroy(cl->cl_red);
#endif
} else {
cl = malloc(sizeof(struct priq_class), M_DEVBUF,
M_WAITOK|M_ZERO);
if (cl == NULL)
return (NULL);
cl->cl_q = malloc(sizeof(class_queue_t), M_DEVBUF,
M_WAITOK|M_ZERO);
if (cl->cl_q == NULL)
goto err_ret;
}
pif->pif_classes[pri] = cl;
if (flags & PRCF_DEFAULTCLASS)
pif->pif_default = cl;
if (qlimit == 0)
qlimit = 50; /* use default */
qlimit(cl->cl_q) = qlimit;
qtype(cl->cl_q) = Q_DROPTAIL;
qlen(cl->cl_q) = 0;
cl->cl_flags = flags;
cl->cl_pri = pri;
if (pri > pif->pif_maxpri)
pif->pif_maxpri = pri;
cl->cl_pif = pif;
cl->cl_handle = qid;
#ifdef ALTQ_RED
if (flags & (PRCF_RED|PRCF_RIO)) {
int red_flags, red_pkttime;
red_flags = 0;
if (flags & PRCF_ECN)
red_flags |= REDF_ECN;
#ifdef ALTQ_RIO
if (flags & PRCF_CLEARDSCP)
red_flags |= RIOF_CLEARDSCP;
#endif
if (pif->pif_bandwidth < 8)
red_pkttime = 1000 * 1000 * 1000; /* 1 sec */
else
red_pkttime = (int64_t)pif->pif_ifq->altq_ifp->if_mtu
* 1000 * 1000 * 1000 / (pif->pif_bandwidth / 8);
#ifdef ALTQ_RIO
if (flags & PRCF_RIO) {
cl->cl_red = (red_t *)rio_alloc(0, NULL,
red_flags, red_pkttime);
if (cl->cl_red != NULL)
qtype(cl->cl_q) = Q_RIO;
} else
#endif
if (flags & PRCF_RED) {
cl->cl_red = red_alloc(0, 0,
qlimit(cl->cl_q) * 10/100,
qlimit(cl->cl_q) * 30/100,
red_flags, red_pkttime);
if (cl->cl_red != NULL)
qtype(cl->cl_q) = Q_RED;
}
}
#endif /* ALTQ_RED */
return (cl);
err_ret:
if (cl->cl_red != NULL) {
#ifdef ALTQ_RIO
if (q_is_rio(cl->cl_q))
rio_destroy((rio_t *)cl->cl_red);
#endif
#ifdef ALTQ_RED
if (q_is_red(cl->cl_q))
red_destroy(cl->cl_red);
#endif
}
if (cl->cl_q != NULL)
free(cl->cl_q, M_DEVBUF);
free(cl, M_DEVBUF);
return (NULL);
}
struct hfsc_class *
hfsc_class_create(struct hfsc_if *hif, struct service_curve *rsc,
struct service_curve *fsc, struct service_curve *usc,
struct hfsc_class *parent, int qlimit, int flags, int qid)
{
struct hfsc_class *cl, *p;
int i, s;
if (hif->hif_classes >= HFSC_MAX_CLASSES)
return (NULL);
#ifndef ALTQ_RED
if (flags & HFCF_RED) {
#ifdef ALTQ_DEBUG
printf("hfsc_class_create: RED not configured for HFSC!\n");
#endif
return (NULL);
}
#endif
MALLOC(cl, struct hfsc_class *, sizeof(struct hfsc_class),
M_DEVBUF, M_WAITOK);
if (cl == NULL)
return (NULL);
bzero(cl, sizeof(struct hfsc_class));
MALLOC(cl->cl_q, class_queue_t *, sizeof(class_queue_t),
M_DEVBUF, M_WAITOK);
if (cl->cl_q == NULL)
goto err_ret;
bzero(cl->cl_q, sizeof(class_queue_t));
cl->cl_actc = actlist_alloc();
if (cl->cl_actc == NULL)
goto err_ret;
if (qlimit == 0)
qlimit = 50; /* use default */
qlimit(cl->cl_q) = qlimit;
qtype(cl->cl_q) = Q_DROPTAIL;
qlen(cl->cl_q) = 0;
cl->cl_flags = flags;
#ifdef ALTQ_RED
if (flags & (HFCF_RED|HFCF_RIO)) {
int red_flags, red_pkttime;
u_int m2;
m2 = 0;
if (rsc != NULL && rsc->m2 > m2)
m2 = rsc->m2;
if (fsc != NULL && fsc->m2 > m2)
m2 = fsc->m2;
if (usc != NULL && usc->m2 > m2)
m2 = usc->m2;
red_flags = 0;
if (flags & HFCF_ECN)
red_flags |= REDF_ECN;
#ifdef ALTQ_RIO
if (flags & HFCF_CLEARDSCP)
red_flags |= RIOF_CLEARDSCP;
#endif
if (m2 < 8)
red_pkttime = 1000 * 1000 * 1000; /* 1 sec */
else
red_pkttime = (int64_t)hif->hif_ifq->altq_ifp->if_mtu
* 1000 * 1000 * 1000 / (m2 / 8);
if (flags & HFCF_RED) {
cl->cl_red = red_alloc(0, 0,
qlimit(cl->cl_q) * 10/100,
qlimit(cl->cl_q) * 30/100,
red_flags, red_pkttime);
if (cl->cl_red != NULL)
qtype(cl->cl_q) = Q_RED;
}
#ifdef ALTQ_RIO
else {
cl->cl_red = (red_t *)rio_alloc(0, NULL,
red_flags, red_pkttime);
if (cl->cl_red != NULL)
qtype(cl->cl_q) = Q_RIO;
}
#endif
}
#endif /* ALTQ_RED */
if (rsc != NULL && (rsc->m1 != 0 || rsc->m2 != 0)) {
MALLOC(cl->cl_rsc, struct internal_sc *,
sizeof(struct internal_sc), M_DEVBUF, M_WAITOK);
if (cl->cl_rsc == NULL)
goto err_ret;
sc2isc(rsc, cl->cl_rsc);
rtsc_init(&cl->cl_deadline, cl->cl_rsc, 0, 0);
rtsc_init(&cl->cl_eligible, cl->cl_rsc, 0, 0);
}
/*
* rm_class_t *
* rmc_newclass(...) - Create a new resource management class at priority
* 'pri' on the interface given by 'ifd'.
*
* nsecPerByte is the data rate of the interface in nanoseconds/byte.
* E.g., 800 for a 10Mb/s ethernet. If the class gets less
* than 100% of the bandwidth, this number should be the
* 'effective' rate for the class. Let f be the
* bandwidth fraction allocated to this class, and let
* nsPerByte be the data rate of the output link in
* nanoseconds/byte. Then nsecPerByte is set to
* nsPerByte / f. E.g., 1600 (= 800 / .5)
* for a class that gets 50% of an ethernet's bandwidth.
*
* action the routine to call when the class is over limit.
*
* maxq max allowable queue size for class (in packets).
*
* parent parent class pointer.
*
* borrow class to borrow from (should be either 'parent' or null).
*
* maxidle max value allowed for class 'idle' time estimate (this
* parameter determines how large an initial burst of packets
* can be before overlimit action is invoked.
*
* offtime how long 'delay' action will delay when class goes over
* limit (this parameter determines the steady-state burst
* size when a class is running over its limit).
*
* Maxidle and offtime have to be computed from the following: If the
* average packet size is s, the bandwidth fraction allocated to this
* class is f, we want to allow b packet bursts, and the gain of the
* averaging filter is g (= 1 - 2^(-RM_FILTER_GAIN)), then:
*
* ptime = s * nsPerByte * (1 - f) / f
* maxidle = ptime * (1 - g^b) / g^b
* minidle = -ptime * (1 / (f - 1))
* offtime = ptime * (1 + 1/(1 - g) * (1 - g^(b - 1)) / g^(b - 1)
*
* Operationally, it's convenient to specify maxidle & offtime in units
* independent of the link bandwidth so the maxidle & offtime passed to
* this routine are the above values multiplied by 8*f/(1000*nsPerByte).
* (The constant factor is a scale factor needed to make the parameters
* integers. This scaling also means that the 'unscaled' values of
* maxidle*nsecPerByte/8 and offtime*nsecPerByte/8 will be in microseconds,
* not nanoseconds.) Also note that the 'idle' filter computation keeps
* an estimate scaled upward by 2^RM_FILTER_GAIN so the passed value of
* maxidle also must be scaled upward by this value. Thus, the passed
* values for maxidle and offtime can be computed as follows:
*
* maxidle = maxidle * 2^RM_FILTER_GAIN * 8 / (1000 * nsecPerByte)
* offtime = offtime * 8 / (1000 * nsecPerByte)
*
* When USE_HRTIME is employed, then maxidle and offtime become:
* maxidle = maxilde * (8.0 / nsecPerByte);
* offtime = offtime * (8.0 / nsecPerByte);
*/
struct rm_class *
rmc_newclass(int pri, struct rm_ifdat *ifd, u_int nsecPerByte,
void (*action)(rm_class_t *, rm_class_t *), int maxq,
struct rm_class *parent, struct rm_class *borrow, u_int maxidle,
int minidle, u_int offtime, int pktsize, int flags)
{
struct rm_class *cl;
struct rm_class *peer;
if (pri >= RM_MAXPRIO)
return (NULL);
#ifndef ALTQ_RED
if (flags & RMCF_RED) {
#ifdef ALTQ_DEBUG
kprintf("rmc_newclass: RED not configured for CBQ!\n");
#endif
return (NULL);
}
#endif
#ifndef ALTQ_RIO
if (flags & RMCF_RIO) {
#ifdef ALTQ_DEBUG
kprintf("rmc_newclass: RIO not configured for CBQ!\n");
#endif
return (NULL);
}
#endif
cl = kmalloc(sizeof(*cl), M_ALTQ, M_WAITOK | M_ZERO);
callout_init(&cl->callout_);
cl->q_ = kmalloc(sizeof(*cl->q_), M_ALTQ, M_WAITOK | M_ZERO);
/*
* Class initialization.
*/
cl->children_ = NULL;
cl->parent_ = parent;
cl->borrow_ = borrow;
cl->leaf_ = 1;
cl->ifdat_ = ifd;
cl->pri_ = pri;
cl->allotment_ = RM_NS_PER_SEC / nsecPerByte; /* Bytes per sec */
cl->depth_ = 0;
cl->qthresh_ = 0;
cl->ns_per_byte_ = nsecPerByte;
qlimit(cl->q_) = maxq;
qtype(cl->q_) = Q_DROPHEAD;
qlen(cl->q_) = 0;
cl->flags_ = flags;
#if 1 /* minidle is also scaled in ALTQ */
cl->minidle_ = (minidle * (int)nsecPerByte) / 8;
if (cl->minidle_ > 0)
cl->minidle_ = 0;
#else
cl->minidle_ = minidle;
#endif
cl->maxidle_ = (maxidle * nsecPerByte) / 8;
if (cl->maxidle_ == 0)
cl->maxidle_ = 1;
#if 1 /* offtime is also scaled in ALTQ */
cl->avgidle_ = cl->maxidle_;
cl->offtime_ = ((offtime * nsecPerByte) / 8) >> RM_FILTER_GAIN;
if (cl->offtime_ == 0)
cl->offtime_ = 1;
#else
cl->avgidle_ = 0;
cl->offtime_ = (offtime * nsecPerByte) / 8;
#endif
cl->overlimit = action;
#ifdef ALTQ_RED
if (flags & (RMCF_RED|RMCF_RIO)) {
int red_flags, red_pkttime;
red_flags = 0;
if (flags & RMCF_ECN)
red_flags |= REDF_ECN;
#ifdef ALTQ_RIO
if (flags & RMCF_CLEARDSCP)
red_flags |= RIOF_CLEARDSCP;
#endif
red_pkttime = nsecPerByte * pktsize / 1000;
if (flags & RMCF_RED) {
cl->red_ = red_alloc(0, 0,
qlimit(cl->q_) * 10/100,
qlimit(cl->q_) * 30/100,
red_flags, red_pkttime);
if (cl->red_ != NULL)
qtype(cl->q_) = Q_RED;
}
#ifdef ALTQ_RIO
else {
cl->red_ = (red_t *)rio_alloc(0, NULL,
red_flags, red_pkttime);
if (cl->red_ != NULL)
qtype(cl->q_) = Q_RIO;
}
#endif
}
#endif /* ALTQ_RED */
/*
* put the class into the class tree
*/
crit_enter();
if ((peer = ifd->active_[pri]) != NULL) {
/* find the last class at this pri */
cl->peer_ = peer;
while (peer->peer_ != ifd->active_[pri])
peer = peer->peer_;
peer->peer_ = cl;
} else {
ifd->active_[pri] = cl;
cl->peer_ = cl;
}
if (cl->parent_) {
cl->next_ = parent->children_;
parent->children_ = cl;
parent->leaf_ = 0;
}
/*
* Compute the depth of this class and its ancestors in the class
* hierarchy.
*/
rmc_depth_compute(cl);
/*
* If CBQ's WRR is enabled, then initialize the class WRR state.
*/
if (ifd->wrr_) {
ifd->num_[pri]++;
ifd->alloc_[pri] += cl->allotment_;
rmc_wrr_set_weights(ifd);
}
crit_exit();
return (cl);
}
static struct priq_class *
priq_class_create(struct priq_if *pif, int pri, u_int32_t qlimit,
int flags, u_int32_t qid)
{
struct ifnet *ifp;
struct ifclassq *ifq;
struct priq_class *cl;
IFCQ_LOCK_ASSERT_HELD(pif->pif_ifq);
/* Sanitize flags unless internally configured */
if (pif->pif_flags & PRIQIFF_ALTQ)
flags &= PRCF_USERFLAGS;
#if !CLASSQ_RED
if (flags & PRCF_RED) {
log(LOG_ERR, "%s: %s RED not available!\n",
if_name(PRIQIF_IFP(pif)), priq_style(pif));
return (NULL);
}
#endif /* !CLASSQ_RED */
#if !CLASSQ_RIO
if (flags & PRCF_RIO) {
log(LOG_ERR, "%s: %s RIO not available!\n",
if_name(PRIQIF_IFP(pif)), priq_style(pif));
return (NULL);
}
#endif /* CLASSQ_RIO */
#if !CLASSQ_BLUE
if (flags & PRCF_BLUE) {
log(LOG_ERR, "%s: %s BLUE not available!\n",
if_name(PRIQIF_IFP(pif)), priq_style(pif));
return (NULL);
}
#endif /* CLASSQ_BLUE */
/* These are mutually exclusive */
if ((flags & (PRCF_RED|PRCF_RIO|PRCF_BLUE|PRCF_SFB)) &&
(flags & (PRCF_RED|PRCF_RIO|PRCF_BLUE|PRCF_SFB)) != PRCF_RED &&
(flags & (PRCF_RED|PRCF_RIO|PRCF_BLUE|PRCF_SFB)) != PRCF_RIO &&
(flags & (PRCF_RED|PRCF_RIO|PRCF_BLUE|PRCF_SFB)) != PRCF_BLUE &&
(flags & (PRCF_RED|PRCF_RIO|PRCF_BLUE|PRCF_SFB)) != PRCF_SFB) {
log(LOG_ERR, "%s: %s more than one RED|RIO|BLUE|SFB\n",
if_name(PRIQIF_IFP(pif)), priq_style(pif));
return (NULL);
}
ifq = pif->pif_ifq;
ifp = PRIQIF_IFP(pif);
if ((cl = pif->pif_classes[pri]) != NULL) {
/* modify the class instead of creating a new one */
if (!qempty(&cl->cl_q))
priq_purgeq(pif, cl, 0, NULL, NULL);
#if CLASSQ_RIO
if (q_is_rio(&cl->cl_q))
rio_destroy(cl->cl_rio);
#endif /* CLASSQ_RIO */
#if CLASSQ_RED
if (q_is_red(&cl->cl_q))
red_destroy(cl->cl_red);
#endif /* CLASSQ_RED */
#if CLASSQ_BLUE
if (q_is_blue(&cl->cl_q))
blue_destroy(cl->cl_blue);
#endif /* CLASSQ_BLUE */
if (q_is_sfb(&cl->cl_q) && cl->cl_sfb != NULL)
sfb_destroy(cl->cl_sfb);
cl->cl_qalg.ptr = NULL;
qtype(&cl->cl_q) = Q_DROPTAIL;
qstate(&cl->cl_q) = QS_RUNNING;
} else {
cl = zalloc(priq_cl_zone);
if (cl == NULL)
return (NULL);
bzero(cl, priq_cl_size);
}
pif->pif_classes[pri] = cl;
if (flags & PRCF_DEFAULTCLASS)
pif->pif_default = cl;
if (qlimit == 0 || qlimit > IFCQ_MAXLEN(ifq)) {
qlimit = IFCQ_MAXLEN(ifq);
if (qlimit == 0)
qlimit = DEFAULT_QLIMIT; /* use default */
}
_qinit(&cl->cl_q, Q_DROPTAIL, qlimit);
cl->cl_flags = flags;
cl->cl_pri = pri;
if (pri > pif->pif_maxpri)
pif->pif_maxpri = pri;
cl->cl_pif = pif;
cl->cl_handle = qid;
if (flags & (PRCF_RED|PRCF_RIO|PRCF_BLUE|PRCF_SFB)) {
#if CLASSQ_RED || CLASSQ_RIO
u_int64_t ifbandwidth = ifnet_output_linkrate(ifp);
int pkttime;
#endif /* CLASSQ_RED || CLASSQ_RIO */
cl->cl_qflags = 0;
if (flags & PRCF_ECN) {
if (flags & PRCF_BLUE)
cl->cl_qflags |= BLUEF_ECN;
else if (flags & PRCF_SFB)
cl->cl_qflags |= SFBF_ECN;
else if (flags & PRCF_RED)
cl->cl_qflags |= REDF_ECN;
else if (flags & PRCF_RIO)
cl->cl_qflags |= RIOF_ECN;
}
if (flags & PRCF_FLOWCTL) {
if (flags & PRCF_SFB)
cl->cl_qflags |= SFBF_FLOWCTL;
}
if (flags & PRCF_CLEARDSCP) {
if (flags & PRCF_RIO)
cl->cl_qflags |= RIOF_CLEARDSCP;
}
#if CLASSQ_RED || CLASSQ_RIO
/*
* XXX: RED & RIO should be watching link speed and MTU
* events and recompute pkttime accordingly.
*/
if (ifbandwidth < 8)
pkttime = 1000 * 1000 * 1000; /* 1 sec */
else
pkttime = (int64_t)ifp->if_mtu * 1000 * 1000 * 1000 /
(ifbandwidth / 8);
/* Test for exclusivity {RED,RIO,BLUE,SFB} was done above */
#if CLASSQ_RED
if (flags & PRCF_RED) {
cl->cl_red = red_alloc(ifp, 0, 0,
qlimit(&cl->cl_q) * 10/100,
qlimit(&cl->cl_q) * 30/100,
cl->cl_qflags, pkttime);
if (cl->cl_red != NULL)
qtype(&cl->cl_q) = Q_RED;
}
#endif /* CLASSQ_RED */
#if CLASSQ_RIO
if (flags & PRCF_RIO) {
cl->cl_rio =
rio_alloc(ifp, 0, NULL, cl->cl_qflags, pkttime);
if (cl->cl_rio != NULL)
qtype(&cl->cl_q) = Q_RIO;
}
#endif /* CLASSQ_RIO */
#endif /* CLASSQ_RED || CLASSQ_RIO */
#if CLASSQ_BLUE
if (flags & PRCF_BLUE) {
cl->cl_blue = blue_alloc(ifp, 0, 0, cl->cl_qflags);
if (cl->cl_blue != NULL)
qtype(&cl->cl_q) = Q_BLUE;
}
#endif /* CLASSQ_BLUE */
if (flags & PRCF_SFB) {
if (!(cl->cl_flags & PRCF_LAZY))
cl->cl_sfb = sfb_alloc(ifp, cl->cl_handle,
qlimit(&cl->cl_q), cl->cl_qflags);
if (cl->cl_sfb != NULL || (cl->cl_flags & PRCF_LAZY))
qtype(&cl->cl_q) = Q_SFB;
}
}
if (pktsched_verbose) {
log(LOG_DEBUG, "%s: %s created qid=%d pri=%d qlimit=%d "
"flags=%b\n", if_name(ifp), priq_style(pif),
cl->cl_handle, cl->cl_pri, qlimit, flags, PRCF_BITS);
}
return (cl);
}
