diff options
Diffstat (limited to 'net/sched/sch_tbf.c')
| -rw-r--r-- | net/sched/sch_tbf.c | 44 |
1 files changed, 19 insertions, 25 deletions
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c index 94c61598b86a..a2f93c09f3cc 100644 --- a/net/sched/sch_tbf.c +++ b/net/sched/sch_tbf.c @@ -139,19 +139,6 @@ static int tbf_enqueue(struct sk_buff *skb, struct Qdisc* sch) return 0; } -static int tbf_requeue(struct sk_buff *skb, struct Qdisc* sch) -{ - struct tbf_sched_data *q = qdisc_priv(sch); - int ret; - - if ((ret = q->qdisc->ops->requeue(skb, q->qdisc)) == 0) { - sch->q.qlen++; - sch->qstats.requeues++; - } - - return ret; -} - static unsigned int tbf_drop(struct Qdisc* sch) { struct tbf_sched_data *q = qdisc_priv(sch); @@ -169,7 +156,7 @@ static struct sk_buff *tbf_dequeue(struct Qdisc* sch) struct tbf_sched_data *q = qdisc_priv(sch); struct sk_buff *skb; - skb = q->qdisc->dequeue(q->qdisc); + skb = q->qdisc->ops->peek(q->qdisc); if (skb) { psched_time_t now; @@ -192,6 +179,10 @@ static struct sk_buff *tbf_dequeue(struct Qdisc* sch) toks -= L2T(q, len); if ((toks|ptoks) >= 0) { + skb = qdisc_dequeue_peeked(q->qdisc); + if (unlikely(!skb)) + return NULL; + q->t_c = now; q->tokens = toks; q->ptokens = ptoks; @@ -214,12 +205,6 @@ static struct sk_buff *tbf_dequeue(struct Qdisc* sch) (cf. CSZ, HPFQ, HFSC) */ - if (q->qdisc->ops->requeue(skb, q->qdisc) != NET_XMIT_SUCCESS) { - /* When requeue fails skb is dropped */ - qdisc_tree_decrease_qlen(q->qdisc, 1); - sch->qstats.drops++; - } - sch->qstats.overlimits++; } return NULL; @@ -251,6 +236,7 @@ static int tbf_change(struct Qdisc* sch, struct nlattr *opt) struct tc_tbf_qopt *qopt; struct qdisc_rate_table *rtab = NULL; struct qdisc_rate_table *ptab = NULL; + struct qdisc_rate_table *tmp; struct Qdisc *child = NULL; int max_size,n; @@ -299,7 +285,8 @@ static int tbf_change(struct Qdisc* sch, struct nlattr *opt) sch_tree_lock(sch); if (child) { qdisc_tree_decrease_qlen(q->qdisc, q->qdisc->q.qlen); - qdisc_destroy(xchg(&q->qdisc, child)); + qdisc_destroy(q->qdisc); + q->qdisc = child; } q->limit = qopt->limit; q->mtu = qopt->mtu; @@ -307,8 +294,14 @@ static int tbf_change(struct Qdisc* sch, struct nlattr *opt) q->buffer = qopt->buffer; q->tokens = q->buffer; q->ptokens = q->mtu; - rtab = xchg(&q->R_tab, rtab); - ptab = xchg(&q->P_tab, ptab); + + tmp = q->R_tab; + q->R_tab = rtab; + rtab = tmp; + + tmp = q->P_tab; + q->P_tab = ptab; + ptab = tmp; sch_tree_unlock(sch); err = 0; done: @@ -398,7 +391,8 @@ static int tbf_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new, new = &noop_qdisc; sch_tree_lock(sch); - *old = xchg(&q->qdisc, new); + *old = q->qdisc; + q->qdisc = new; qdisc_tree_decrease_qlen(*old, (*old)->q.qlen); qdisc_reset(*old); sch_tree_unlock(sch); @@ -469,7 +463,7 @@ static struct Qdisc_ops tbf_qdisc_ops __read_mostly = { .priv_size = sizeof(struct tbf_sched_data), .enqueue = tbf_enqueue, .dequeue = tbf_dequeue, - .requeue = tbf_requeue, + .peek = qdisc_peek_dequeued, .drop = tbf_drop, .init = tbf_init, .reset = tbf_reset, |