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Date: Mon, 14 Jul 2008 16:00:34 -0700 (PDT)
From: David Miller <davem@...emloft.net>
To: netdev@...r.kernel.org
Subject: [PATCH 13/14]: pkt_sched: Convert Qdisc_class_ops->change to
validate/commit/cancel.
Now it will be possible for the qdisc change operation requests
to made fully multiqueue aware.
New versions of the generic estimator attach routines were needed
which take a pointer to the attribute structure itself rather than
the nlattr.
Signed-off-by: David S. Miller <davem@...emloft.net>
---
include/net/gen_stats.h | 8 +
include/net/sch_generic.h | 10 +-
net/core/gen_estimator.c | 34 ++++-
net/sched/sch_api.c | 7 +-
net/sched/sch_atm.c | 119 +++++++++-------
net/sched/sch_cbq.c | 355 +++++++++++++++++++++++++++++----------------
net/sched/sch_dsmark.c | 54 ++++---
net/sched/sch_hfsc.c | 252 +++++++++++++++++++++-----------
net/sched/sch_htb.c | 249 +++++++++++++++++++++-----------
net/sched/sch_ingress.c | 18 ++-
net/sched/sch_netem.c | 23 +++-
net/sched/sch_prio.c | 19 ++-
net/sched/sch_red.c | 23 +++-
net/sched/sch_sfq.c | 23 +++-
net/sched/sch_tbf.c | 23 +++-
15 files changed, 818 insertions(+), 399 deletions(-)
diff --git a/include/net/gen_stats.h b/include/net/gen_stats.h
index 8cd8185..bff1970 100644
--- a/include/net/gen_stats.h
+++ b/include/net/gen_stats.h
@@ -40,10 +40,18 @@ extern int gnet_stats_finish_copy(struct gnet_dump *d);
extern int gen_new_estimator(struct gnet_stats_basic *bstats,
struct gnet_stats_rate_est *rate_est,
spinlock_t *stats_lock, struct nlattr *opt);
+extern int __gen_new_estimator(struct gnet_stats_basic *bstats,
+ struct gnet_stats_rate_est *rate_est,
+ spinlock_t *stats_lock,
+ struct gnet_estimator *parm);
extern void gen_kill_estimator(struct gnet_stats_basic *bstats,
struct gnet_stats_rate_est *rate_est);
extern int gen_replace_estimator(struct gnet_stats_basic *bstats,
struct gnet_stats_rate_est *rate_est,
spinlock_t *stats_lock, struct nlattr *opt);
+extern int __gen_replace_estimator(struct gnet_stats_basic *bstats,
+ struct gnet_stats_rate_est *rate_est,
+ spinlock_t *stats_lock,
+ struct gnet_estimator *parm);
#endif
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index b17dece..64d60a8 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -69,8 +69,14 @@ struct Qdisc_class_ops
/* Class manipulation routines */
unsigned long (*get)(struct Qdisc *, u32 classid);
void (*put)(struct Qdisc *, unsigned long);
- int (*change)(struct Qdisc *, u32, u32,
- struct nlattr **, unsigned long *);
+ int (*validate_change)(struct Qdisc *, u32, u32,
+ struct nlattr **,
+ unsigned long *);
+ void (*commit_change)(struct Qdisc *, u32, u32,
+ struct nlattr **, unsigned long);
+ void (*cancel_change)(struct Qdisc *, u32, u32,
+ struct nlattr **,
+ unsigned long);
int (*validate_delete)(struct Qdisc *,
unsigned long);
void (*commit_delete)(struct Qdisc *,
diff --git a/net/core/gen_estimator.c b/net/core/gen_estimator.c
index 57abe82..c711471 100644
--- a/net/core/gen_estimator.c
+++ b/net/core/gen_estimator.c
@@ -156,18 +156,14 @@ skip:
*
* NOTE: Called under rtnl_mutex
*/
-int gen_new_estimator(struct gnet_stats_basic *bstats,
- struct gnet_stats_rate_est *rate_est,
- spinlock_t *stats_lock,
- struct nlattr *opt)
+int __gen_new_estimator(struct gnet_stats_basic *bstats,
+ struct gnet_stats_rate_est *rate_est,
+ spinlock_t *stats_lock,
+ struct gnet_estimator *parm)
{
struct gen_estimator *est;
- struct gnet_estimator *parm = nla_data(opt);
int idx;
- if (nla_len(opt) < sizeof(*parm))
- return -EINVAL;
-
if (parm->interval < -2 || parm->interval > 3)
return -EINVAL;
@@ -197,6 +193,19 @@ int gen_new_estimator(struct gnet_stats_basic *bstats,
return 0;
}
+int gen_new_estimator(struct gnet_stats_basic *bstats,
+ struct gnet_stats_rate_est *rate_est,
+ spinlock_t *stats_lock,
+ struct nlattr *opt)
+{
+ struct gnet_estimator *parm = nla_data(opt);
+
+ if (nla_len(opt) < sizeof(*parm))
+ return -EINVAL;
+
+ return __gen_new_estimator(bstats, rate_est, stats_lock, parm);
+}
+
static void __gen_kill_estimator(struct rcu_head *head)
{
struct gen_estimator *e = container_of(head,
@@ -260,7 +269,16 @@ int gen_replace_estimator(struct gnet_stats_basic *bstats,
return gen_new_estimator(bstats, rate_est, stats_lock, opt);
}
+int __gen_replace_estimator(struct gnet_stats_basic *bstats,
+ struct gnet_stats_rate_est *rate_est,
+ spinlock_t *stats_lock, struct gnet_estimator *parm)
+{
+ gen_kill_estimator(bstats, rate_est);
+ return __gen_new_estimator(bstats, rate_est, stats_lock, parm);
+}
EXPORT_SYMBOL(gen_kill_estimator);
EXPORT_SYMBOL(gen_new_estimator);
+EXPORT_SYMBOL(__gen_new_estimator);
EXPORT_SYMBOL(gen_replace_estimator);
+EXPORT_SYMBOL(__gen_replace_estimator);
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 5230d2d..a4020a6 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1610,9 +1610,12 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
}
new_cl = cl;
- err = cops->change(q, clid, pid, tca, &new_cl);
- if (err == 0)
+
+ err = cops->validate_change(q, clid, pid, tca, &new_cl);
+ if (!err) {
+ cops->commit_change(q, clid, pid, tca, new_cl);
tclass_notify(skb, n, q, new_cl, RTM_NEWTCLASS);
+ }
out:
if (cl)
diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c
index c240275..2e32b59 100644
--- a/net/sched/sch_atm.c
+++ b/net/sched/sch_atm.c
@@ -212,27 +212,25 @@ static const struct nla_policy atm_policy[TCA_ATM_MAX + 1] = {
[TCA_ATM_EXCESS] = { .type = NLA_U32 },
};
-static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
- struct nlattr **tca, unsigned long *arg)
+static int atm_tc_validate_change(struct Qdisc *sch, u32 classid, u32 parent,
+ struct nlattr **tca, unsigned long *arg)
{
+ struct atm_flow_data *flow = (struct atm_flow_data *) *arg;
struct atm_qdisc_data *p = qdisc_priv(sch);
- struct atm_flow_data *flow = (struct atm_flow_data *)*arg;
- struct atm_flow_data *excess = NULL;
struct nlattr *opt = tca[TCA_OPTIONS];
struct nlattr *tb[TCA_ATM_MAX + 1];
+ struct atm_flow_data *excess;
+ int err, fd, hdr_len;
struct socket *sock;
- int fd, error, hdr_len;
void *hdr;
- pr_debug("atm_tc_change(sch %p,[qdisc %p],classid %x,parent %x,"
- "flow %p,opt %p)\n", sch, p, classid, parent, flow, opt);
- /*
- * The concept of parents doesn't apply for this qdisc.
- */
+ if (!opt)
+ return -EINVAL;
+
+ /* The concept of parents doesn't apply for this qdisc. */
if (parent && parent != TC_H_ROOT && parent != sch->handle)
return -EINVAL;
- /*
- * ATM classes cannot be changed. In order to change properties of the
+ /* ATM classes cannot be changed. In order to change properties of the
* ATM connection, that socket needs to be modified directly (via the
* native ATM API. In order to send a flow to a different VC, the old
* class needs to be removed and a new one added. (This may be changed
@@ -240,17 +238,15 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
*/
if (flow)
return -EBUSY;
- if (opt == NULL)
- return -EINVAL;
- error = nla_parse_nested(tb, TCA_ATM_MAX, opt, atm_policy);
- if (error < 0)
- return error;
+ err = nla_parse_nested(tb, TCA_ATM_MAX, opt, atm_policy);
+ if (err < 0)
+ return err;
if (!tb[TCA_ATM_FD])
return -EINVAL;
fd = nla_get_u32(tb[TCA_ATM_FD]);
- pr_debug("atm_tc_change: fd %d\n", fd);
+
if (tb[TCA_ATM_HDR]) {
hdr_len = nla_len(tb[TCA_ATM_HDR]);
hdr = nla_data(tb[TCA_ATM_HDR]);
@@ -258,39 +254,36 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
hdr_len = RFC1483LLC_LEN;
hdr = NULL; /* default LLC/SNAP for IP */
}
- if (!tb[TCA_ATM_EXCESS])
- excess = NULL;
- else {
+
+ excess = NULL;
+ if (tb[TCA_ATM_EXCESS]) {
excess = (struct atm_flow_data *)
atm_tc_get(sch, nla_get_u32(tb[TCA_ATM_EXCESS]));
if (!excess)
return -ENOENT;
}
- pr_debug("atm_tc_change: type %d, payload %d, hdr_len %d\n",
- opt->nla_type, nla_len(opt), hdr_len);
- sock = sockfd_lookup(fd, &error);
+
+ sock = sockfd_lookup(fd, &err);
if (!sock)
- return error; /* f_count++ */
- pr_debug("atm_tc_change: f_count %d\n", file_count(sock->file));
- if (sock->ops->family != PF_ATMSVC && sock->ops->family != PF_ATMPVC) {
- error = -EPROTOTYPE;
- goto err_out;
- }
- /* @@@ should check if the socket is really operational or we'll crash
- on vcc->send */
+ return err;
+
+ err = -EPROTOTYPE;
+ if (sock->ops->family != PF_ATMSVC && sock->ops->family != PF_ATMPVC)
+ goto err_sock_put;
+
if (classid) {
if (TC_H_MAJ(classid ^ sch->handle)) {
pr_debug("atm_tc_change: classid mismatch\n");
- error = -EINVAL;
- goto err_out;
+ err = -EINVAL;
+ goto err_sock_put;
}
if (find_flow(p, flow)) {
- error = -EEXIST;
- goto err_out;
+ err = -EEXIST;
+ goto err_sock_put;
}
} else {
- int i;
unsigned long cl;
+ int i;
for (i = 1; i < 0x8000; i++) {
classid = TC_H_MAKE(sch->handle, 0x8000 | i);
@@ -300,23 +293,22 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
atm_tc_put(sch, cl);
}
}
- pr_debug("atm_tc_change: new id %x\n", classid);
+
flow = kzalloc(sizeof(struct atm_flow_data) + hdr_len, GFP_KERNEL);
- pr_debug("atm_tc_change: flow %p\n", flow);
- if (!flow) {
- error = -ENOBUFS;
- goto err_out;
- }
+ err = -ENOBUFS;
+ if (!flow)
+ goto err_sock_put;
+
flow->filter_list = NULL;
flow->q = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue,
&pfifo_qdisc_ops, classid);
+ err = -ENOMEM;
if (!flow->q)
- flow->q = &noop_qdisc;
- pr_debug("atm_tc_change: qdisc %p\n", flow->q);
+ goto err_free_flow;
+
flow->sock = sock;
flow->vcc = ATM_SD(sock); /* speedup */
flow->vcc->user_back = flow;
- pr_debug("atm_tc_change: vcc %p\n", flow->vcc);
flow->old_pop = flow->vcc->pop;
flow->parent = p;
flow->vcc->pop = sch_atm_pop;
@@ -324,7 +316,6 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
flow->ref = 1;
flow->excess = excess;
flow->next = p->link.next;
- p->link.next = flow;
flow->hdr_len = hdr_len;
if (hdr)
memcpy(flow->hdr, hdr, hdr_len);
@@ -332,11 +323,33 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
memcpy(flow->hdr, llc_oui_ip, sizeof(llc_oui_ip));
*arg = (unsigned long)flow;
return 0;
-err_out:
- if (excess)
- atm_tc_put(sch, (unsigned long)excess);
+
+err_free_flow:
+ kfree(flow);
+
+err_sock_put:
sockfd_put(sock);
- return error;
+ return err;
+}
+
+static void atm_tc_commit_change(struct Qdisc *sch, u32 classid, u32 parent,
+ struct nlattr **tca, unsigned long arg)
+{
+ struct atm_flow_data *flow = (struct atm_flow_data *) arg;
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+
+ flow->next = p->link.next;
+ p->link.next = flow;
+}
+
+static void atm_tc_cancel_change(struct Qdisc *sch, u32 classid, u32 parent,
+ struct nlattr **tca, unsigned long arg)
+{
+ struct atm_flow_data *flow = (struct atm_flow_data *) arg;
+
+ qdisc_destroy(flow->q);
+ sockfd_put(flow->sock);
+ kfree(flow);
}
static int atm_tc_validate_delete(struct Qdisc *sch, unsigned long arg)
@@ -693,7 +706,9 @@ static const struct Qdisc_class_ops atm_class_ops = {
.leaf = atm_tc_leaf,
.get = atm_tc_get,
.put = atm_tc_put,
- .change = atm_tc_change,
+ .validate_change= atm_tc_validate_change,
+ .commit_change = atm_tc_commit_change,
+ .cancel_change = atm_tc_cancel_change,
.validate_delete= atm_tc_validate_delete,
.commit_delete = atm_tc_commit_delete,
.walk = atm_tc_walk,
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 7138a04..a6896f8 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -171,6 +171,8 @@ struct cbq_sched_data
psched_tdiff_t wd_expires;
int toplevel;
u32 hgenerator;
+
+ void *pending_config;
};
@@ -1771,44 +1773,213 @@ static void cbq_put(struct Qdisc *sch, unsigned long arg)
}
}
-static int
-cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **tca,
- unsigned long *arg)
+struct cbq_pending_config {
+ struct tc_cbq_lssopt lss;
+ struct tc_cbq_wrropt wrr;
+ struct tc_cbq_ovl ovl;
+ struct tc_cbq_police police;
+ struct tc_cbq_fopt fopt;
+ struct gnet_estimator est;
+ struct qdisc_rate_table *rtab;
+ struct cbq_class *new_class;
+ unsigned int flags;
+#define FLAG_HAVE_LSSOPT 0x00000001
+#define FLAG_HAVE_WRROPT 0x00000002
+#define FLAG_HAVE_STRATEGY 0x00000004
+#define FLAG_HAVE_POLICE 0x00000008
+#define FLAG_HAVE_FOPT 0x00000010
+#define FLAG_HAVE_RATE 0x00000020
+};
+
+static int cbq_validate_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long *arg)
{
- int err;
+ struct cbq_class *cl = (struct cbq_class *) *arg;
struct cbq_sched_data *q = qdisc_priv(sch);
- struct cbq_class *cl = (struct cbq_class*)*arg;
struct nlattr *opt = tca[TCA_OPTIONS];
struct nlattr *tb[TCA_CBQ_MAX + 1];
- struct cbq_class *parent;
- struct qdisc_rate_table *rtab = NULL;
+ struct cbq_pending_config *p;
+ int err;
- if (opt == NULL)
+ if (!opt)
return -EINVAL;
err = nla_parse_nested(tb, TCA_CBQ_MAX, opt, cbq_policy);
if (err < 0)
return err;
+ p = kzalloc(sizeof(*p), GFP_KERNEL);
+ if (!p)
+ return -ENOMEM;
+
+ err = -EINVAL;
+ if (tb[TCA_CBQ_RATE]) {
+ p->rtab = qdisc_get_rtab(nla_data(tb[TCA_CBQ_RATE]),
+ tb[TCA_CBQ_RTAB]);
+ if (!p->rtab)
+ goto err_free_config;
+ }
+
+ if (tb[TCA_CBQ_LSSOPT]) {
+ memcpy(&p->lss, nla_data(tb[TCA_CBQ_LSSOPT]), sizeof(p->lss));
+ p->flags |= FLAG_HAVE_LSSOPT;
+ }
+ if (tb[TCA_CBQ_WRROPT]) {
+ memcpy(&p->wrr, nla_data(tb[TCA_CBQ_WRROPT]), sizeof(p->wrr));
+ p->flags |= FLAG_HAVE_WRROPT;
+ }
+ if (tb[TCA_CBQ_OVL_STRATEGY]) {
+ memcpy(&p->ovl, nla_data(tb[TCA_CBQ_OVL_STRATEGY]),
+ sizeof(p->ovl));
+ p->flags |= FLAG_HAVE_STRATEGY;
+ }
+ if (tb[TCA_CBQ_POLICE]) {
+ memcpy(&p->police, nla_data(tb[TCA_CBQ_POLICE]),
+ sizeof(p->police));
+ p->flags |= FLAG_HAVE_POLICE;
+ }
+ if (tb[TCA_CBQ_FOPT]) {
+ memcpy(&p->fopt, nla_data(tb[TCA_CBQ_FOPT]), sizeof(p->fopt));
+ p->flags |= FLAG_HAVE_FOPT;
+ }
+ if (tb[TCA_RATE]) {
+ memcpy(&p->est, nla_data(tb[TCA_RATE]), sizeof(p->est));
+ p->flags |= FLAG_HAVE_RATE;
+ }
+
if (cl) {
/* Check parent */
if (parentid) {
if (cl->tparent &&
cl->tparent->common.classid != parentid)
- return -EINVAL;
+ goto err_release_rtab;
if (!cl->tparent && parentid != TC_H_ROOT)
- return -EINVAL;
+ goto err_release_rtab;
}
+ } else {
+ struct cbq_class *parent;
+
+ if (parentid == TC_H_ROOT)
+ goto err_release_rtab;
+
+ if (!tb[TCA_CBQ_WRROPT] ||
+ !tb[TCA_CBQ_RATE] ||
+ !tb[TCA_CBQ_LSSOPT])
+ goto err_release_rtab;
- if (tb[TCA_CBQ_RATE]) {
- rtab = qdisc_get_rtab(nla_data(tb[TCA_CBQ_RATE]), tb[TCA_CBQ_RTAB]);
- if (rtab == NULL)
- return -EINVAL;
+ if (classid) {
+ if (TC_H_MAJ(classid^sch->handle) ||
+ cbq_class_lookup(q, classid))
+ goto err_release_rtab;
+ } else {
+ int i;
+
+ classid = TC_H_MAKE(sch->handle, 0x8000);
+ for (i = 0; i < 0x8000; i++) {
+ if (++q->hgenerator >= 0x8000)
+ q->hgenerator = 1;
+ if (cbq_class_lookup(q, classid | q->hgenerator) == NULL)
+ break;
+ }
+ err = -ENOSR;
+ if (i >= 0x8000)
+ goto err_release_rtab;
+ classid = classid | q->hgenerator;
}
- /* Change class parameters */
- sch_tree_lock(sch);
+ parent = &q->link;
+ if (parentid) {
+ parent = cbq_class_lookup(q, parentid);
+ err = -EINVAL;
+ if (!parent)
+ goto err_release_rtab;
+ }
+
+ err = -ENOBUFS;
+ cl = kzalloc(sizeof(*cl), GFP_KERNEL);
+ if (!cl)
+ goto err_release_rtab;
+ cl->R_tab = p->rtab;
+ cl->refcnt = 1;
+ if (!(cl->q = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue,
+ &pfifo_qdisc_ops, classid)))
+ goto err_free_class;
+ cl->common.classid = classid;
+ cl->tparent = parent;
+ cl->qdisc = sch;
+ cl->allot = parent->allot;
+ cl->quantum = cl->allot;
+ cl->weight = cl->R_tab->rate.rate;
+
+ p->new_class = cl;
+ }
+
+ q->pending_config = p;
+ *arg = (unsigned long) cl;
+
+ return 0;
+
+err_free_class:
+ kfree(cl);
+
+err_release_rtab:
+ if (p->rtab)
+ qdisc_put_rtab(p->rtab);
+err_free_config:
+ kfree(p);
+ return err;
+}
+
+static void cbq_cancel_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ struct cbq_sched_data *q = qdisc_priv(sch);
+ struct cbq_pending_config *p;
+
+ BUG_ON(!q->pending_config);
+ p = q->pending_config;
+ q->pending_config = NULL;
+
+ if (p->new_class) {
+ struct cbq_class *cl = p->new_class;
+
+ p->new_class = NULL;
+
+ if (cl->q) {
+ qdisc_destroy(cl->q);
+ cl->q = NULL;
+ }
+ kfree(cl);
+ }
+
+ if (p->rtab) {
+ qdisc_put_rtab(p->rtab);
+ p->rtab = NULL;
+ }
+
+ kfree(p);
+}
+
+static void cbq_commit_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ struct cbq_class *cl = (struct cbq_class *) arg;
+ struct cbq_sched_data *q = qdisc_priv(sch);
+ struct qdisc_rate_table *rtab;
+ struct cbq_pending_config *p;
+
+ BUG_ON(!q->pending_config);
+ p = q->pending_config;
+ q->pending_config = NULL;
+
+ rtab = p->rtab;
+
+ if (!p->new_class) {
+ sch_tree_lock(sch);
if (cl->next_alive != NULL)
cbq_deactivate_class(cl);
@@ -1817,131 +1988,69 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
qdisc_put_rtab(rtab);
}
- if (tb[TCA_CBQ_LSSOPT])
- cbq_set_lss(cl, nla_data(tb[TCA_CBQ_LSSOPT]));
+ if (p->flags & FLAG_HAVE_LSSOPT)
+ cbq_set_lss(cl, &p->lss);
- if (tb[TCA_CBQ_WRROPT]) {
+ if (p->flags & FLAG_HAVE_WRROPT) {
cbq_rmprio(q, cl);
- cbq_set_wrr(cl, nla_data(tb[TCA_CBQ_WRROPT]));
+ cbq_set_wrr(cl, &p->wrr);
}
- if (tb[TCA_CBQ_OVL_STRATEGY])
- cbq_set_overlimit(cl, nla_data(tb[TCA_CBQ_OVL_STRATEGY]));
+ if (p->flags & FLAG_HAVE_STRATEGY)
+ cbq_set_overlimit(cl, &p->ovl);
#ifdef CONFIG_NET_CLS_ACT
- if (tb[TCA_CBQ_POLICE])
- cbq_set_police(cl, nla_data(tb[TCA_CBQ_POLICE]));
+ if (p->flags & FLAG_HAVE_POLICE)
+ cbq_set_police(cl, &p->police);
#endif
- if (tb[TCA_CBQ_FOPT])
- cbq_set_fopt(cl, nla_data(tb[TCA_CBQ_FOPT]));
+ if (p->flags & FLAG_HAVE_FOPT)
+ cbq_set_fopt(cl, &p->fopt);
if (cl->q->q.qlen)
cbq_activate_class(cl);
sch_tree_unlock(sch);
- if (tca[TCA_RATE])
- gen_replace_estimator(&cl->bstats, &cl->rate_est,
- &sch->dev_queue->lock,
- tca[TCA_RATE]);
- return 0;
- }
-
- if (parentid == TC_H_ROOT)
- return -EINVAL;
-
- if (tb[TCA_CBQ_WRROPT] == NULL || tb[TCA_CBQ_RATE] == NULL ||
- tb[TCA_CBQ_LSSOPT] == NULL)
- return -EINVAL;
-
- rtab = qdisc_get_rtab(nla_data(tb[TCA_CBQ_RATE]), tb[TCA_CBQ_RTAB]);
- if (rtab == NULL)
- return -EINVAL;
-
- if (classid) {
- err = -EINVAL;
- if (TC_H_MAJ(classid^sch->handle) || cbq_class_lookup(q, classid))
- goto failure;
+ if (p->flags & FLAG_HAVE_RATE)
+ __gen_replace_estimator(&cl->bstats, &cl->rate_est,
+ &sch->dev_queue->lock,
+ &p->est);
} else {
- int i;
- classid = TC_H_MAKE(sch->handle,0x8000);
-
- for (i=0; i<0x8000; i++) {
- if (++q->hgenerator >= 0x8000)
- q->hgenerator = 1;
- if (cbq_class_lookup(q, classid|q->hgenerator) == NULL)
- break;
- }
- err = -ENOSR;
- if (i >= 0x8000)
- goto failure;
- classid = classid|q->hgenerator;
- }
-
- parent = &q->link;
- if (parentid) {
- parent = cbq_class_lookup(q, parentid);
- err = -EINVAL;
- if (parent == NULL)
- goto failure;
- }
-
- err = -ENOBUFS;
- cl = kzalloc(sizeof(*cl), GFP_KERNEL);
- if (cl == NULL)
- goto failure;
- cl->R_tab = rtab;
- rtab = NULL;
- cl->refcnt = 1;
- if (!(cl->q = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue,
- &pfifo_qdisc_ops, classid)))
- cl->q = &noop_qdisc;
- cl->common.classid = classid;
- cl->tparent = parent;
- cl->qdisc = sch;
- cl->allot = parent->allot;
- cl->quantum = cl->allot;
- cl->weight = cl->R_tab->rate.rate;
-
- sch_tree_lock(sch);
- cbq_link_class(cl);
- cl->borrow = cl->tparent;
- if (cl->tparent != &q->link)
- cl->share = cl->tparent;
- cbq_adjust_levels(parent);
- cl->minidle = -0x7FFFFFFF;
- cbq_set_lss(cl, nla_data(tb[TCA_CBQ_LSSOPT]));
- cbq_set_wrr(cl, nla_data(tb[TCA_CBQ_WRROPT]));
- if (cl->ewma_log==0)
- cl->ewma_log = q->link.ewma_log;
- if (cl->maxidle==0)
- cl->maxidle = q->link.maxidle;
- if (cl->avpkt==0)
- cl->avpkt = q->link.avpkt;
- cl->overlimit = cbq_ovl_classic;
- if (tb[TCA_CBQ_OVL_STRATEGY])
- cbq_set_overlimit(cl, nla_data(tb[TCA_CBQ_OVL_STRATEGY]));
+ sch_tree_lock(sch);
+ cbq_link_class(cl);
+ cl->borrow = cl->tparent;
+ if (cl->tparent != &q->link)
+ cl->share = cl->tparent;
+ cbq_adjust_levels(cl->tparent);
+ cl->minidle = -0x7FFFFFFF;
+ cbq_set_lss(cl, &p->lss);
+ cbq_set_wrr(cl, &p->wrr);
+ if (!cl->ewma_log)
+ cl->ewma_log = q->link.ewma_log;
+ if (!cl->maxidle)
+ cl->maxidle = q->link.maxidle;
+ if (!cl->avpkt)
+ cl->avpkt = q->link.avpkt;
+ cl->overlimit = cbq_ovl_classic;
+ if (p->flags & FLAG_HAVE_STRATEGY)
+ cbq_set_overlimit(cl, &p->ovl);
#ifdef CONFIG_NET_CLS_ACT
- if (tb[TCA_CBQ_POLICE])
- cbq_set_police(cl, nla_data(tb[TCA_CBQ_POLICE]));
+ if (p->flags & FLAG_HAVE_POLICE)
+ cbq_set_police(cl, &p->police);
#endif
- if (tb[TCA_CBQ_FOPT])
- cbq_set_fopt(cl, nla_data(tb[TCA_CBQ_FOPT]));
- sch_tree_unlock(sch);
-
- qdisc_class_hash_grow(sch, &q->clhash);
+ if (p->flags & FLAG_HAVE_FOPT)
+ cbq_set_fopt(cl, &p->fopt);
+ sch_tree_unlock(sch);
- if (tca[TCA_RATE])
- gen_new_estimator(&cl->bstats, &cl->rate_est,
- &sch->dev_queue->lock, tca[TCA_RATE]);
+ qdisc_class_hash_grow(sch, &q->clhash);
- *arg = (unsigned long)cl;
- return 0;
+ if (p->flags & FLAG_HAVE_RATE)
+ __gen_new_estimator(&cl->bstats, &cl->rate_est,
+ &sch->dev_queue->lock, &p->est);
+ }
-failure:
- qdisc_put_rtab(rtab);
- return err;
+ kfree(p);
}
static int cbq_validate_delete(struct Qdisc *sch, unsigned long arg)
@@ -2059,7 +2168,9 @@ static const struct Qdisc_class_ops cbq_class_ops = {
.qlen_notify = cbq_qlen_notify,
.get = cbq_get,
.put = cbq_put,
- .change = cbq_change_class,
+ .validate_change= cbq_validate_change_class,
+ .commit_change = cbq_commit_change_class,
+ .cancel_change = cbq_cancel_change_class,
.validate_delete= cbq_validate_delete,
.commit_delete = cbq_commit_delete,
.walk = cbq_walk,
diff --git a/net/sched/sch_dsmark.c b/net/sched/sch_dsmark.c
index 03c8bcf..10d3381 100644
--- a/net/sched/sch_dsmark.c
+++ b/net/sched/sch_dsmark.c
@@ -42,6 +42,9 @@ struct dsmark_qdisc_data {
u16 indices;
u32 default_index; /* index range is 0...0xffff */
int set_tc_index;
+
+ u8 pending_mask;
+ u8 pending_value;
};
static inline int dsmark_valid_index(struct dsmark_qdisc_data *p, u16 index)
@@ -122,43 +125,48 @@ static const struct nla_policy dsmark_policy[TCA_DSMARK_MAX + 1] = {
[TCA_DSMARK_VALUE] = { .type = NLA_U8 },
};
-static int dsmark_change(struct Qdisc *sch, u32 classid, u32 parent,
- struct nlattr **tca, unsigned long *arg)
+static int dsmark_validate_change(struct Qdisc *sch, u32 classid, u32 parent,
+ struct nlattr **tca, unsigned long *arg)
{
struct dsmark_qdisc_data *p = qdisc_priv(sch);
struct nlattr *opt = tca[TCA_OPTIONS];
struct nlattr *tb[TCA_DSMARK_MAX + 1];
int err = -EINVAL;
- u8 mask = 0;
-
- pr_debug("dsmark_change(sch %p,[qdisc %p],classid %x,parent %x),"
- "arg 0x%lx\n", sch, p, classid, parent, *arg);
-
- if (!dsmark_valid_index(p, *arg)) {
- err = -ENOENT;
- goto errout;
- }
if (!opt)
- goto errout;
+ return -EINVAL;
+ if (!dsmark_valid_index(p, *arg))
+ return -ENOENT;
err = nla_parse_nested(tb, TCA_DSMARK_MAX, opt, dsmark_policy);
if (err < 0)
- goto errout;
-
- if (tb[TCA_DSMARK_MASK])
- mask = nla_get_u8(tb[TCA_DSMARK_MASK]);
+ return err;
if (tb[TCA_DSMARK_VALUE])
- p->value[*arg-1] = nla_get_u8(tb[TCA_DSMARK_VALUE]);
+ p->pending_value = nla_get_u8(tb[TCA_DSMARK_VALUE]);
+ else
+ p->pending_value = p->value[*arg-1];
if (tb[TCA_DSMARK_MASK])
- p->mask[*arg-1] = mask;
+ p->pending_mask = nla_get_u8(tb[TCA_DSMARK_MASK]);
+ else
+ p->pending_mask = p->mask[*arg-1];
- err = 0;
+ return 0;
+}
-errout:
- return err;
+static void dsmark_commit_change(struct Qdisc *sch, u32 classid, u32 parent,
+ struct nlattr **tca, unsigned long arg)
+{
+ struct dsmark_qdisc_data *p = qdisc_priv(sch);
+
+ p->value[arg - 1] = p->pending_value;
+ p->mask[arg - 1] = p->pending_mask;
+}
+
+static void dsmark_cancel_change(struct Qdisc *sch, u32 classid, u32 parent,
+ struct nlattr **tca, unsigned long arg)
+{
}
static int dsmark_validate_delete(struct Qdisc *sch, unsigned long arg)
@@ -498,7 +506,9 @@ static const struct Qdisc_class_ops dsmark_class_ops = {
.leaf = dsmark_leaf,
.get = dsmark_get,
.put = dsmark_put,
- .change = dsmark_change,
+ .validate_change= dsmark_validate_change,
+ .commit_change = dsmark_commit_change,
+ .cancel_change = dsmark_cancel_change,
.validate_delete= dsmark_validate_delete,
.commit_delete = dsmark_commit_delete,
.walk = dsmark_walk,
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index 95a497e..8e2d601 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -186,6 +186,8 @@ struct hfsc_sched
dropping) */
struct sk_buff_head requeue; /* requeued packet */
struct qdisc_watchdog watchdog; /* watchdog timer */
+
+ void *pending_config;
};
#define HT_INFINITY 0xffffffffffffffffULL /* infinite time value */
@@ -979,61 +981,150 @@ static const struct nla_policy hfsc_policy[TCA_HFSC_MAX + 1] = {
[TCA_HFSC_USC] = { .len = sizeof(struct tc_service_curve) },
};
-static int
-hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
- struct nlattr **tca, unsigned long *arg)
+struct hfsc_pending_config {
+ struct tc_service_curve *rsc;
+ struct tc_service_curve *fsc;
+ struct tc_service_curve *usc;
+ struct gnet_estimator est;
+ struct hfsc_class *new_class;
+ unsigned int flags;
+#define FLAG_HAVE_EST 0x00000001
+};
+
+static int hfsc_validate_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long *arg)
{
+ struct hfsc_class *cl = (struct hfsc_class *) *arg, *parent = NULL;
struct hfsc_sched *q = qdisc_priv(sch);
- struct hfsc_class *cl = (struct hfsc_class *)*arg;
- struct hfsc_class *parent = NULL;
struct nlattr *opt = tca[TCA_OPTIONS];
struct nlattr *tb[TCA_HFSC_MAX + 1];
- struct tc_service_curve *rsc = NULL, *fsc = NULL, *usc = NULL;
- u64 cur_time;
+ struct hfsc_pending_config *p;
int err;
- if (opt == NULL)
+ if (!opt)
return -EINVAL;
err = nla_parse_nested(tb, TCA_HFSC_MAX, opt, hfsc_policy);
if (err < 0)
return err;
+ if (cl) {
+ if (parentid) {
+ if (cl->cl_parent &&
+ cl->cl_parent->cl_common.classid != parentid)
+ return -EINVAL;
+ if (cl->cl_parent == NULL && parentid != TC_H_ROOT)
+ return -EINVAL;
+ }
+ } else {
+ if (parentid == TC_H_ROOT)
+ return -EEXIST;
+ parent = &q->root;
+ if (parentid) {
+ parent = hfsc_find_class(parentid, sch);
+ if (!parent)
+ return -ENOENT;
+ }
+ if (classid == 0 || TC_H_MAJ(classid ^ sch->handle) != 0)
+ return -EINVAL;
+ if (hfsc_find_class(classid, sch))
+ return -EEXIST;
+ }
+
+ p = kzalloc(sizeof(*p), GFP_KERNEL);
+ if (p)
+ return -ENOMEM;
+
if (tb[TCA_HFSC_RSC]) {
- rsc = nla_data(tb[TCA_HFSC_RSC]);
- if (rsc->m1 == 0 && rsc->m2 == 0)
- rsc = NULL;
+ p->rsc = nla_data(tb[TCA_HFSC_RSC]);
+ if (p->rsc->m1 == 0 && p->rsc->m2 == 0)
+ p->rsc = NULL;
}
if (tb[TCA_HFSC_FSC]) {
- fsc = nla_data(tb[TCA_HFSC_FSC]);
- if (fsc->m1 == 0 && fsc->m2 == 0)
- fsc = NULL;
+ p->fsc = nla_data(tb[TCA_HFSC_FSC]);
+ if (p->fsc->m1 == 0 && p->fsc->m2 == 0)
+ p->fsc = NULL;
}
if (tb[TCA_HFSC_USC]) {
- usc = nla_data(tb[TCA_HFSC_USC]);
- if (usc->m1 == 0 && usc->m2 == 0)
- usc = NULL;
+ p->usc = nla_data(tb[TCA_HFSC_USC]);
+ if (p->usc->m1 == 0 && p->usc->m2 == 0)
+ p->usc = NULL;
}
- if (cl != NULL) {
- if (parentid) {
- if (cl->cl_parent &&
- cl->cl_parent->cl_common.classid != parentid)
- return -EINVAL;
- if (cl->cl_parent == NULL && parentid != TC_H_ROOT)
- return -EINVAL;
- }
- cur_time = psched_get_time();
+ if (tca[TCA_RATE]) {
+ memcpy(&p->est, nla_data(tca[TCA_RATE]), sizeof(p->est));
+ p->flags |= FLAG_HAVE_EST;
+ }
+ if (!cl) {
+ err = -EINVAL;
+ if (!p->rsc && !p->fsc)
+ goto err_free_config;
+ cl = kzalloc(sizeof(struct hfsc_class), GFP_KERNEL);
+ err = -ENOBUFS;
+ if (!cl)
+ goto err_free_config;
+ if (p->rsc)
+ hfsc_change_rsc(cl, p->rsc, 0);
+ if (p->fsc)
+ hfsc_change_fsc(cl, p->fsc);
+ if (p->usc)
+ hfsc_change_usc(cl, p->usc, 0);
+
+ cl->cl_common.classid = classid;
+ cl->refcnt = 1;
+ cl->sched = q;
+ cl->cl_parent = parent;
+ cl->qdisc = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue,
+ &pfifo_qdisc_ops, classid);
+ err = -ENOMEM;
+ if (!cl->qdisc)
+ goto err_free_class;
+
+ INIT_LIST_HEAD(&cl->children);
+ cl->vt_tree = RB_ROOT;
+ cl->cf_tree = RB_ROOT;
+
+ p->new_class = cl;
+ }
+
+ *arg = (unsigned long) cl;
+ q->pending_config = p;
+
+ return 0;
+
+err_free_class:
+ kfree(cl);
+
+err_free_config:
+ kfree(p);
+ return err;
+}
+
+static void hfsc_commit_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ struct hfsc_class *cl = (struct hfsc_class *) arg;
+ struct hfsc_sched *q = qdisc_priv(sch);
+ struct hfsc_pending_config *p;
+
+ BUG_ON(!q->pending_config);
+ p = q->pending_config;
+ q->pending_config = NULL;
+
+ if (!p->new_class) {
+ u64 cur_time = psched_get_time();
sch_tree_lock(sch);
- if (rsc != NULL)
- hfsc_change_rsc(cl, rsc, cur_time);
- if (fsc != NULL)
- hfsc_change_fsc(cl, fsc);
- if (usc != NULL)
- hfsc_change_usc(cl, usc, cur_time);
+ if (p->rsc)
+ hfsc_change_rsc(cl, p->rsc, cur_time);
+ if (p->fsc)
+ hfsc_change_fsc(cl, p->fsc);
+ if (p->usc)
+ hfsc_change_usc(cl, p->usc, cur_time);
if (cl->qdisc->q.qlen != 0) {
if (cl->cl_flags & HFSC_RSC)
@@ -1043,70 +1134,53 @@ hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
}
sch_tree_unlock(sch);
- if (tca[TCA_RATE])
- gen_replace_estimator(&cl->bstats, &cl->rate_est,
- &sch->dev_queue->lock,
- tca[TCA_RATE]);
- return 0;
- }
+ if (p->flags & FLAG_HAVE_EST)
+ __gen_replace_estimator(&cl->bstats, &cl->rate_est,
+ &sch->dev_queue->lock,
+ &p->est);
+ } else {
+ sch_tree_lock(sch);
+ qdisc_class_hash_insert(&q->clhash, &cl->cl_common);
+ list_add_tail(&cl->siblings, &cl->cl_parent->children);
+ if (cl->cl_parent->level == 0)
+ hfsc_purge_queue(sch, cl->cl_parent);
+ hfsc_adjust_levels(cl->cl_parent);
+ cl->cl_pcvtoff = cl->cl_parent->cl_cvtoff;
+ sch_tree_unlock(sch);
- if (parentid == TC_H_ROOT)
- return -EEXIST;
+ qdisc_class_hash_grow(sch, &q->clhash);
- parent = &q->root;
- if (parentid) {
- parent = hfsc_find_class(parentid, sch);
- if (parent == NULL)
- return -ENOENT;
+ if (p->flags & FLAG_HAVE_EST)
+ __gen_new_estimator(&cl->bstats, &cl->rate_est,
+ &sch->dev_queue->lock, &p->est);
}
- if (classid == 0 || TC_H_MAJ(classid ^ sch->handle) != 0)
- return -EINVAL;
- if (hfsc_find_class(classid, sch))
- return -EEXIST;
+ kfree(p);
+}
- if (rsc == NULL && fsc == NULL)
- return -EINVAL;
+static void hfsc_cancel_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ struct hfsc_sched *q = qdisc_priv(sch);
+ struct hfsc_pending_config *p;
- cl = kzalloc(sizeof(struct hfsc_class), GFP_KERNEL);
- if (cl == NULL)
- return -ENOBUFS;
-
- if (rsc != NULL)
- hfsc_change_rsc(cl, rsc, 0);
- if (fsc != NULL)
- hfsc_change_fsc(cl, fsc);
- if (usc != NULL)
- hfsc_change_usc(cl, usc, 0);
-
- cl->cl_common.classid = classid;
- cl->refcnt = 1;
- cl->sched = q;
- cl->cl_parent = parent;
- cl->qdisc = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue,
- &pfifo_qdisc_ops, classid);
- if (cl->qdisc == NULL)
- cl->qdisc = &noop_qdisc;
- INIT_LIST_HEAD(&cl->children);
- cl->vt_tree = RB_ROOT;
- cl->cf_tree = RB_ROOT;
+ BUG_ON(!q->pending_config);
+ p = q->pending_config;
+ q->pending_config = NULL;
- sch_tree_lock(sch);
- qdisc_class_hash_insert(&q->clhash, &cl->cl_common);
- list_add_tail(&cl->siblings, &parent->children);
- if (parent->level == 0)
- hfsc_purge_queue(sch, parent);
- hfsc_adjust_levels(parent);
- cl->cl_pcvtoff = parent->cl_cvtoff;
- sch_tree_unlock(sch);
+ if (p->new_class) {
+ struct hfsc_class *cl = p->new_class;
- qdisc_class_hash_grow(sch, &q->clhash);
+ p->new_class = NULL;
- if (tca[TCA_RATE])
- gen_new_estimator(&cl->bstats, &cl->rate_est,
- &sch->dev_queue->lock, tca[TCA_RATE]);
- *arg = (unsigned long)cl;
- return 0;
+ if (cl->qdisc)
+ qdisc_destroy(cl->qdisc);
+
+ kfree(cl);
+ }
+
+ kfree(p);
}
static void
@@ -1737,7 +1811,9 @@ hfsc_drop(struct Qdisc *sch)
}
static const struct Qdisc_class_ops hfsc_class_ops = {
- .change = hfsc_change_class,
+ .validate_change= hfsc_validate_change_class,
+ .commit_change = hfsc_commit_change_class,
+ .cancel_change = hfsc_cancel_change_class,
.validate_delete= hfsc_validate_delete_class,
.commit_delete = hfsc_commit_delete_class,
.prepare_graft = hfsc_prepare_graft,
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index a9cf7bb..315493b 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -169,6 +169,8 @@ struct htb_sched {
int direct_qlen; /* max qlen of above */
long direct_pkts;
+
+ void *pending_config;
};
/* find class in global hash table using given handle */
@@ -1326,74 +1328,73 @@ static void htb_put(struct Qdisc *sch, unsigned long arg)
htb_destroy_class(sch, cl);
}
-static int htb_change_class(struct Qdisc *sch, u32 classid,
- u32 parentid, struct nlattr **tca,
- unsigned long *arg)
+struct htb_pending_config {
+ struct tc_htb_opt hopt;
+ struct qdisc_rate_table *rtab;
+ struct qdisc_rate_table *ctab;
+ struct htb_class *new_class;
+ struct gnet_estimator est;
+ unsigned int flags;
+#define FLAG_HAVE_EST 0x00000001
+};
+
+static int htb_validate_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long *arg)
{
- int err = -EINVAL;
+ struct htb_class *cl = (struct htb_class *) *arg, *parent;
struct htb_sched *q = qdisc_priv(sch);
- struct htb_class *cl = (struct htb_class *)*arg, *parent;
struct nlattr *opt = tca[TCA_OPTIONS];
- struct qdisc_rate_table *rtab = NULL, *ctab = NULL;
+ struct qdisc_rate_table *rtab, *ctab;
struct nlattr *tb[TCA_HTB_RTAB + 1];
+ struct htb_pending_config *p;
struct tc_htb_opt *hopt;
+ int err;
- /* extract all subattrs from opt attr */
if (!opt)
- goto failure;
-
+ return -EINVAL;
err = nla_parse_nested(tb, TCA_HTB_RTAB, opt, htb_policy);
if (err < 0)
- goto failure;
-
- err = -EINVAL;
- if (tb[TCA_HTB_PARMS] == NULL)
- goto failure;
+ return err;
+ if (!tb[TCA_HTB_PARMS])
+ return -EINVAL;
parent = parentid == TC_H_ROOT ? NULL : htb_find(parentid, sch);
-
hopt = nla_data(tb[TCA_HTB_PARMS]);
rtab = qdisc_get_rtab(&hopt->rate, tb[TCA_HTB_RTAB]);
+ if (!rtab)
+ return -EINVAL;
+ err = -EINVAL;
ctab = qdisc_get_rtab(&hopt->ceil, tb[TCA_HTB_CTAB]);
- if (!rtab || !ctab)
- goto failure;
+ if (!ctab)
+ goto err_put_rtab;
+
+ p = kzalloc(sizeof(*p), GFP_KERNEL);
+ err = -ENOMEM;
+ if (!p)
+ goto err_put_ctab;
+
+ memcpy(&p->hopt, hopt, sizeof(p->hopt));
+ p->rtab = rtab;
+ p->ctab = ctab;
- if (!cl) { /* new class */
+ if (!cl) {
struct Qdisc *new_q;
int prio;
- struct {
- struct nlattr nla;
- struct gnet_estimator opt;
- } est = {
- .nla = {
- .nla_len = nla_attr_size(sizeof(est.opt)),
- .nla_type = TCA_RATE,
- },
- .opt = {
- /* 4s interval, 16s averaging constant */
- .interval = 2,
- .ewma_log = 2,
- },
- };
-
- /* check for valid classid */
+
+ err = -EINVAL;
if (!classid || TC_H_MAJ(classid ^ sch->handle)
|| htb_find(classid, sch))
- goto failure;
+ goto err_free_config;
+ if (parent && parent->parent && parent->parent->level < 2)
+ goto err_free_config;
- /* check maximal depth */
- if (parent && parent->parent && parent->parent->level < 2) {
- printk(KERN_ERR "htb: tree is too deep\n");
- goto failure;
- }
err = -ENOBUFS;
- if ((cl = kzalloc(sizeof(*cl), GFP_KERNEL)) == NULL)
- goto failure;
+ cl = kzalloc(sizeof(*cl), GFP_KERNEL);
+ if (!cl)
+ goto err_free_config;
- gen_new_estimator(&cl->bstats, &cl->rate_est,
- &sch->dev_queue->lock,
- tca[TCA_RATE] ? : &est.nla);
cl->refcnt = 1;
cl->children = 0;
INIT_LIST_HEAD(&cl->un.leaf.drop_list);
@@ -1402,12 +1403,81 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
for (prio = 0; prio < TC_HTB_NUMPRIO; prio++)
RB_CLEAR_NODE(&cl->node[prio]);
- /* create leaf qdisc early because it uses kmalloc(GFP_KERNEL)
- so that can't be used inside of sch_tree_lock
- -- thanks to Karlis Peisenieks */
new_q = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue,
&pfifo_qdisc_ops, classid);
- sch_tree_lock(sch);
+ err = -ENOMEM;
+ if (!new_q)
+ goto err_free_class;
+
+ cl->un.leaf.q = new_q;
+
+ if (tca[TCA_RATE]) {
+ memcpy(&p->est, nla_data(tca[TCA_RATE]),
+ sizeof(p->est));
+ } else {
+ /* default: 4s interval, 16s averaging constant */
+ p->est.interval = 2;
+ p->est.ewma_log = 2;
+ }
+
+ __gen_new_estimator(&cl->bstats, &cl->rate_est,
+ &sch->dev_queue->lock, &p->est);
+
+ cl->common.classid = classid;
+ cl->parent = parent;
+
+ /* set class to be in HTB_CAN_SEND state */
+ cl->tokens = hopt->buffer;
+ cl->ctokens = hopt->cbuffer;
+ cl->mbuffer = 60 * PSCHED_TICKS_PER_SEC; /* 1min */
+ cl->t_c = psched_get_time();
+ cl->cmode = HTB_CAN_SEND;
+
+ p->new_class = cl;
+ } else {
+ if (tca[TCA_RATE]) {
+ memcpy(&p->est, nla_data(tca[TCA_RATE]),
+ sizeof(p->est));
+ p->flags |= FLAG_HAVE_EST;
+ }
+ }
+
+ q->pending_config = p;
+ *arg = (unsigned long) cl;
+
+ return 0;
+
+err_free_class:
+ kfree(cl);
+
+err_free_config:
+ kfree(p);
+
+err_put_ctab:
+ qdisc_put_rtab(ctab);
+
+err_put_rtab:
+ qdisc_put_rtab(rtab);
+ return err;
+}
+
+static void htb_commit_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ struct htb_class *cl = (struct htb_class *) arg;
+ struct htb_sched *q = qdisc_priv(sch);
+ struct htb_pending_config *p;
+
+ BUG_ON(!q->pending_config);
+ p = q->pending_config;
+ q->pending_config = NULL;
+
+ sch_tree_lock(sch);
+ if (p->new_class) {
+ struct htb_class *parent;
+
+ parent = cl->parent;
if (parent && !parent->level) {
unsigned int qlen = parent->un.leaf.q->q.qlen;
@@ -1427,50 +1497,38 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
: TC_HTB_MAXDEPTH) - 1;
memset(&parent->un.inner, 0, sizeof(parent->un.inner));
}
- /* leaf (we) needs elementary qdisc */
- cl->un.leaf.q = new_q ? new_q : &noop_qdisc;
-
- cl->common.classid = classid;
- cl->parent = parent;
-
- /* set class to be in HTB_CAN_SEND state */
- cl->tokens = hopt->buffer;
- cl->ctokens = hopt->cbuffer;
- cl->mbuffer = 60 * PSCHED_TICKS_PER_SEC; /* 1min */
- cl->t_c = psched_get_time();
- cl->cmode = HTB_CAN_SEND;
/* attach to the hash list and parent's family */
qdisc_class_hash_insert(&q->clhash, &cl->common);
if (parent)
parent->children++;
} else {
- if (tca[TCA_RATE])
- gen_replace_estimator(&cl->bstats, &cl->rate_est,
- &sch->dev_queue->lock,
- tca[TCA_RATE]);
- sch_tree_lock(sch);
+ if (p->flags & FLAG_HAVE_EST)
+ __gen_replace_estimator(&cl->bstats, &cl->rate_est,
+ &sch->dev_queue->lock,
+ &p->est);
+
}
/* it used to be a nasty bug here, we have to check that node
is really leaf before changing cl->un.leaf ! */
if (!cl->level) {
- cl->un.leaf.quantum = rtab->rate.rate / q->rate2quantum;
- if (!hopt->quantum && cl->un.leaf.quantum < 1000) {
+ cl->un.leaf.quantum = p->rtab->rate.rate / q->rate2quantum;
+ if (!p->hopt.quantum && cl->un.leaf.quantum < 1000) {
printk(KERN_WARNING
"HTB: quantum of class %X is small. Consider r2q change.\n",
cl->common.classid);
cl->un.leaf.quantum = 1000;
}
- if (!hopt->quantum && cl->un.leaf.quantum > 200000) {
+ if (!p->hopt.quantum && cl->un.leaf.quantum > 200000) {
printk(KERN_WARNING
"HTB: quantum of class %X is big. Consider r2q change.\n",
cl->common.classid);
cl->un.leaf.quantum = 200000;
}
- if (hopt->quantum)
- cl->un.leaf.quantum = hopt->quantum;
- if ((cl->un.leaf.prio = hopt->prio) >= TC_HTB_NUMPRIO)
+ if (p->hopt.quantum)
+ cl->un.leaf.quantum = p->hopt.quantum;
+ if ((cl->un.leaf.prio = p->hopt.prio) >= TC_HTB_NUMPRIO)
cl->un.leaf.prio = TC_HTB_NUMPRIO - 1;
/* backup for htb_parent_to_leaf */
@@ -1478,27 +1536,46 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
cl->prio = cl->un.leaf.prio;
}
- cl->buffer = hopt->buffer;
- cl->cbuffer = hopt->cbuffer;
+ cl->buffer = p->hopt.buffer;
+ cl->cbuffer = p->hopt.cbuffer;
if (cl->rate)
qdisc_put_rtab(cl->rate);
- cl->rate = rtab;
+ cl->rate = p->rtab;
if (cl->ceil)
qdisc_put_rtab(cl->ceil);
- cl->ceil = ctab;
+ cl->ceil = p->ctab;
sch_tree_unlock(sch);
qdisc_class_hash_grow(sch, &q->clhash);
- *arg = (unsigned long)cl;
- return 0;
+ kfree(p);
+}
-failure:
- if (rtab)
- qdisc_put_rtab(rtab);
- if (ctab)
- qdisc_put_rtab(ctab);
- return err;
+static void htb_cancel_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ struct htb_sched *q = qdisc_priv(sch);
+ struct htb_pending_config *p;
+
+ BUG_ON(!q->pending_config);
+ p = q->pending_config;
+ q->pending_config = NULL;
+
+ if (p->new_class) {
+ struct htb_class *cl = p->new_class;
+
+ if (cl->un.leaf.q)
+ qdisc_destroy(cl->un.leaf.q);
+
+ p->new_class = NULL;
+ kfree(p->new_class);
+ }
+
+ qdisc_put_rtab(p->ctab);
+ qdisc_put_rtab(p->rtab);
+
+ kfree(p);
}
static struct tcf_proto **htb_find_tcf(struct Qdisc *sch, unsigned long arg)
@@ -1570,7 +1647,9 @@ static const struct Qdisc_class_ops htb_class_ops = {
.qlen_notify = htb_qlen_notify,
.get = htb_get,
.put = htb_put,
- .change = htb_change_class,
+ .validate_change= htb_validate_change_class,
+ .commit_change = htb_commit_change_class,
+ .cancel_change = htb_cancel_change_class,
.validate_delete= htb_validate_delete,
.commit_delete = htb_commit_delete,
.walk = htb_walk,
diff --git a/net/sched/sch_ingress.c b/net/sched/sch_ingress.c
index 1cfb57e..924e1d4 100644
--- a/net/sched/sch_ingress.c
+++ b/net/sched/sch_ingress.c
@@ -48,12 +48,22 @@ static void ingress_put(struct Qdisc *sch, unsigned long cl)
{
}
-static int ingress_change(struct Qdisc *sch, u32 classid, u32 parent,
- struct nlattr **tca, unsigned long *arg)
+static int ingress_validate_change(struct Qdisc *sch, u32 classid, u32 parent,
+ struct nlattr **tca, unsigned long *arg)
{
return 0;
}
+static void ingress_commit_change(struct Qdisc *sch, u32 classid, u32 parent,
+ struct nlattr **tca, unsigned long arg)
+{
+}
+
+static void ingress_cancel_change(struct Qdisc *sch, u32 classid, u32 parent,
+ struct nlattr **tca, unsigned long arg)
+{
+}
+
static void ingress_walk(struct Qdisc *sch, struct qdisc_walker *walker)
{
return;
@@ -127,7 +137,9 @@ static const struct Qdisc_class_ops ingress_class_ops = {
.leaf = ingress_leaf,
.get = ingress_get,
.put = ingress_put,
- .change = ingress_change,
+ .validate_change= ingress_validate_change,
+ .commit_change = ingress_commit_change,
+ .cancel_change = ingress_cancel_change,
.walk = ingress_walk,
.tcf_chain = ingress_find_tcf,
.bind_tcf = ingress_bind_filter,
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index ca8bcd4..ca34c7d 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -702,12 +702,27 @@ static void netem_put(struct Qdisc *sch, unsigned long arg)
{
}
-static int netem_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
- struct nlattr **tca, unsigned long *arg)
+static int netem_validate_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long *arg)
{
return -ENOSYS;
}
+static void netem_commit_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ WARN_ON(1);
+}
+
+static void netem_cancel_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ WARN_ON(1);
+}
+
static int netem_validate_delete(struct Qdisc *sch, unsigned long arg)
{
return -ENOSYS;
@@ -741,7 +756,9 @@ static const struct Qdisc_class_ops netem_class_ops = {
.leaf = netem_leaf,
.get = netem_get,
.put = netem_put,
- .change = netem_change_class,
+ .validate_change= netem_validate_change_class,
+ .commit_change = netem_commit_change_class,
+ .cancel_change = netem_cancel_change_class,
.validate_delete= netem_validate_delete,
.commit_delete = netem_commit_delete,
.walk = netem_walk,
diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c
index 25e07db..e2bf0e2 100644
--- a/net/sched/sch_prio.c
+++ b/net/sched/sch_prio.c
@@ -394,16 +394,27 @@ static void prio_put(struct Qdisc *q, unsigned long cl)
return;
}
-static int prio_change(struct Qdisc *sch, u32 handle, u32 parent, struct nlattr **tca, unsigned long *arg)
+static int prio_validate_tc_change(struct Qdisc *sch, u32 handle, u32 parent,
+ struct nlattr **tca, unsigned long *arg)
{
- unsigned long cl = *arg;
struct prio_sched_data *q = qdisc_priv(sch);
+ unsigned long cl = *arg;
if (cl - 1 > q->bands)
return -ENOENT;
return 0;
}
+static void prio_commit_tc_change(struct Qdisc *sch, u32 handle, u32 parent,
+ struct nlattr **tca, unsigned long arg)
+{
+}
+
+static void prio_cancel_tc_change(struct Qdisc *sch, u32 handle, u32 parent,
+ struct nlattr **tca, unsigned long arg)
+{
+}
+
static int prio_validate_delete(struct Qdisc *sch, unsigned long cl)
{
struct prio_sched_data *q = qdisc_priv(sch);
@@ -480,7 +491,9 @@ static const struct Qdisc_class_ops prio_class_ops = {
.leaf = prio_leaf,
.get = prio_get,
.put = prio_put,
- .change = prio_change,
+ .validate_change= prio_validate_tc_change,
+ .commit_change = prio_commit_tc_change,
+ .cancel_change = prio_cancel_tc_change,
.validate_delete= prio_validate_delete,
.commit_delete = prio_commit_delete,
.walk = prio_walk,
diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
index 5ad4ed0..4804047 100644
--- a/net/sched/sch_red.c
+++ b/net/sched/sch_red.c
@@ -368,12 +368,27 @@ static void red_put(struct Qdisc *sch, unsigned long arg)
return;
}
-static int red_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
- struct nlattr **tca, unsigned long *arg)
+static int red_validate_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long *arg)
{
return -ENOSYS;
}
+static void red_commit_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ WARN_ON(1);
+}
+
+static void red_cancel_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ WARN_ON(1);
+}
+
static int red_validate_delete(struct Qdisc *sch, unsigned long cl)
{
return -ENOSYS;
@@ -408,7 +423,9 @@ static const struct Qdisc_class_ops red_class_ops = {
.leaf = red_leaf,
.get = red_get,
.put = red_put,
- .change = red_change_class,
+ .validate_change= red_validate_change_class,
+ .commit_change = red_commit_change_class,
+ .cancel_change = red_cancel_change_class,
.validate_delete= red_validate_delete,
.commit_delete = red_commit_delete,
.walk = red_walk,
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index a52ca74..dba7ecf 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -547,12 +547,27 @@ nla_put_failure:
return -1;
}
-static int sfq_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
- struct nlattr **tca, unsigned long *arg)
+static int sfq_validate_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long *arg)
{
return -EOPNOTSUPP;
}
+static void sfq_commit_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ WARN_ON(1);
+}
+
+static void sfq_cancel_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ WARN_ON(1);
+}
+
static unsigned long sfq_get(struct Qdisc *sch, u32 classid)
{
return 0;
@@ -611,7 +626,9 @@ static void sfq_walk(struct Qdisc *sch, struct qdisc_walker *arg)
static const struct Qdisc_class_ops sfq_class_ops = {
.get = sfq_get,
- .change = sfq_change_class,
+ .validate_change= sfq_validate_change_class,
+ .commit_change = sfq_commit_change_class,
+ .cancel_change = sfq_cancel_change_class,
.tcf_chain = sfq_find_tcf,
.dump = sfq_dump_class,
.dump_stats = sfq_dump_class_stats,
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index f9de373..5474f87 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -511,12 +511,27 @@ static void tbf_put(struct Qdisc *sch, unsigned long arg)
{
}
-static int tbf_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
- struct nlattr **tca, unsigned long *arg)
+static int tbf_validate_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long *arg)
{
return -ENOSYS;
}
+static void tbf_commit_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ WARN_ON(1);
+}
+
+static void tbf_cancel_change_class(struct Qdisc *sch, u32 classid,
+ u32 parentid, struct nlattr **tca,
+ unsigned long arg)
+{
+ WARN_ON(1);
+}
+
static int tbf_validate_delete(struct Qdisc *sch, unsigned long arg)
{
return -ENOSYS;
@@ -552,7 +567,9 @@ static const struct Qdisc_class_ops tbf_class_ops =
.leaf = tbf_leaf,
.get = tbf_get,
.put = tbf_put,
- .change = tbf_change_class,
+ .validate_change= tbf_validate_change_class,
+ .commit_change = tbf_commit_change_class,
+ .cancel_change = tbf_cancel_change_class,
.validate_delete= tbf_validate_delete,
.commit_delete = tbf_commit_delete,
.walk = tbf_walk,
--
1.5.6.2.255.gbed62
--
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