diff options
| -rw-r--r-- | include/net/pkt_sched.h | 4 | ||||
| -rw-r--r-- | net/sched/sch_fifo.c | 42 | ||||
| -rw-r--r-- | net/sched/sch_netem.c | 24 | ||||
| -rw-r--r-- | net/sched/sch_red.c | 33 | ||||
| -rw-r--r-- | net/sched/sch_tbf.c | 33 |
5 files changed, 54 insertions, 82 deletions
diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h index 46fb4d8..8e3a0c4 100644 --- a/include/net/pkt_sched.h +++ b/include/net/pkt_sched.h @@ -72,6 +72,10 @@ extern void qdisc_watchdog_cancel(struct qdisc_watchdog *wd); extern struct Qdisc_ops pfifo_qdisc_ops; extern struct Qdisc_ops bfifo_qdisc_ops; +extern int fifo_set_limit(struct Qdisc *q, unsigned int limit); +extern struct Qdisc *fifo_create_dflt(struct Qdisc *sch, struct Qdisc_ops *ops, + unsigned int limit); + extern int register_qdisc(struct Qdisc_ops *qops); extern int unregister_qdisc(struct Qdisc_ops *qops); extern struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle); diff --git a/net/sched/sch_fifo.c b/net/sched/sch_fifo.c index 95ed482..82d7d7b 100644 --- a/net/sched/sch_fifo.c +++ b/net/sched/sch_fifo.c @@ -107,3 +107,45 @@ struct Qdisc_ops bfifo_qdisc_ops __read_mostly = { .owner = THIS_MODULE, }; EXPORT_SYMBOL(bfifo_qdisc_ops); + +/* Pass size change message down to embedded FIFO */ +int fifo_set_limit(struct Qdisc *q, unsigned int limit) +{ + struct nlattr *nla; + int ret = -ENOMEM; + + /* Hack to avoid sending change message to non-FIFO */ + if (strncmp(q->ops->id + 1, "fifo", 4) != 0) + return 0; + + nla = kmalloc(nla_attr_size(sizeof(struct tc_fifo_qopt)), GFP_KERNEL); + if (nla) { + nla->nla_type = RTM_NEWQDISC; + nla->nla_len = nla_attr_size(sizeof(struct tc_fifo_qopt)); + ((struct tc_fifo_qopt *)nla_data(nla))->limit = limit; + + ret = q->ops->change(q, nla); + kfree(nla); + } + return ret; +} +EXPORT_SYMBOL(fifo_set_limit); + +struct Qdisc *fifo_create_dflt(struct Qdisc *sch, struct Qdisc_ops *ops, + unsigned int limit) +{ + struct Qdisc *q; + int err = -ENOMEM; + + q = qdisc_create_dflt(sch->dev, ops, TC_H_MAKE(sch->handle, 1)); + if (q) { + err = fifo_set_limit(q, limit); + if (err < 0) { + qdisc_destroy(q); + q = NULL; + } + } + + return q ? : ERR_PTR(err); +} +EXPORT_SYMBOL(fifo_create_dflt); diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c index c9c649b..2469766 100644 --- a/net/sched/sch_netem.c +++ b/net/sched/sch_netem.c @@ -310,28 +310,6 @@ static void netem_reset(struct Qdisc *sch) qdisc_watchdog_cancel(&q->watchdog); } -/* Pass size change message down to embedded FIFO */ -static int set_fifo_limit(struct Qdisc *q, int limit) -{ - struct nlattr *nla; - int ret = -ENOMEM; - - /* Hack to avoid sending change message to non-FIFO */ - if (strncmp(q->ops->id + 1, "fifo", 4) != 0) - return 0; - - nla = kmalloc(nla_attr_size(sizeof(struct tc_fifo_qopt)), GFP_KERNEL); - if (nla) { - nla->nla_type = RTM_NEWQDISC; - nla->nla_len = nla_attr_size(sizeof(struct tc_fifo_qopt)); - ((struct tc_fifo_qopt *)nla_data(nla))->limit = limit; - - ret = q->ops->change(q, nla); - kfree(nla); - } - return ret; -} - /* * Distribution data is a variable size payload containing * signed 16 bit values. @@ -416,7 +394,7 @@ static int netem_change(struct Qdisc *sch, struct nlattr *opt) if (ret < 0) return ret; - ret = set_fifo_limit(q->qdisc, qopt->limit); + ret = fifo_set_limit(q->qdisc, qopt->limit); if (ret) { pr_debug("netem: can't set fifo limit\n"); return ret; diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c index 5c56985..77098ac 100644 --- a/net/sched/sch_red.c +++ b/net/sched/sch_red.c @@ -174,33 +174,6 @@ static void red_destroy(struct Qdisc *sch) qdisc_destroy(q->qdisc); } -static struct Qdisc *red_create_dflt(struct Qdisc *sch, u32 limit) -{ - struct Qdisc *q; - struct nlattr *nla; - int ret; - - q = qdisc_create_dflt(sch->dev, &bfifo_qdisc_ops, - TC_H_MAKE(sch->handle, 1)); - if (q) { - nla = kmalloc(nla_attr_size(sizeof(struct tc_fifo_qopt)), - GFP_KERNEL); - if (nla) { - nla->nla_type = RTM_NEWQDISC; - nla->nla_len = nla_attr_size(sizeof(struct tc_fifo_qopt)); - ((struct tc_fifo_qopt *)nla_data(nla))->limit = limit; - - ret = q->ops->change(q, nla); - kfree(nla); - - if (ret == 0) - return q; - } - qdisc_destroy(q); - } - return NULL; -} - static const struct nla_policy red_policy[TCA_RED_MAX + 1] = { [TCA_RED_PARMS] = { .len = sizeof(struct tc_red_qopt) }, [TCA_RED_STAB] = { .len = RED_STAB_SIZE }, @@ -228,9 +201,9 @@ static int red_change(struct Qdisc *sch, struct nlattr *opt) ctl = nla_data(tb[TCA_RED_PARMS]); if (ctl->limit > 0) { - child = red_create_dflt(sch, ctl->limit); - if (child == NULL) - return -ENOMEM; + child = fifo_create_dflt(sch, &bfifo_qdisc_ops, ctl->limit); + if (IS_ERR(child)) + return PTR_ERR(child); } sch_tree_lock(sch); diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c index 0b7d78f..444c227 100644 --- a/net/sched/sch_tbf.c +++ b/net/sched/sch_tbf.c @@ -242,34 +242,6 @@ static void tbf_reset(struct Qdisc* sch) qdisc_watchdog_cancel(&q->watchdog); } -static struct Qdisc *tbf_create_dflt_qdisc(struct Qdisc *sch, u32 limit) -{ - struct Qdisc *q; - struct nlattr *nla; - int ret; - - q = qdisc_create_dflt(sch->dev, &bfifo_qdisc_ops, - TC_H_MAKE(sch->handle, 1)); - if (q) { - nla = kmalloc(nla_attr_size(sizeof(struct tc_fifo_qopt)), - GFP_KERNEL); - if (nla) { - nla->nla_type = RTM_NEWQDISC; - nla->nla_len = nla_attr_size(sizeof(struct tc_fifo_qopt)); - ((struct tc_fifo_qopt *)nla_data(nla))->limit = limit; - - ret = q->ops->change(q, nla); - kfree(nla); - - if (ret == 0) - return q; - } - qdisc_destroy(q); - } - - return NULL; -} - static const struct nla_policy tbf_policy[TCA_TBF_MAX + 1] = { [TCA_TBF_PARMS] = { .len = sizeof(struct tc_tbf_qopt) }, [TCA_TBF_RTAB] = { .type = NLA_BINARY, .len = TC_RTAB_SIZE }, @@ -322,8 +294,11 @@ static int tbf_change(struct Qdisc* sch, struct nlattr *opt) goto done; if (qopt->limit > 0) { - if ((child = tbf_create_dflt_qdisc(sch, qopt->limit)) == NULL) + child = fifo_create_dflt(sch, &bfifo_qdisc_ops, qopt->limit); + if (IS_ERR(child)) { + err = PTR_ERR(child); goto done; + } } sch_tree_lock(sch); |