C++ (Cpp) qdisc_skb_cb Examples

Example #1

File: sch_tbf.c Project: BozkurTR/kernel

/* GSO packet is too big, segment it so that tbf can transmit
 * each segment in time
 */
static int tbf_segment(struct sk_buff *skb, struct Qdisc *sch)
{
	struct tbf_sched_data *q = qdisc_priv(sch);
	struct sk_buff *segs, *nskb;
	netdev_features_t features = netif_skb_features(skb);
	int ret, nb;

	segs = skb_gso_segment(skb, features & ~NETIF_F_GSO_MASK);

	if (IS_ERR_OR_NULL(segs))
		return qdisc_reshape_fail(skb, sch);

	nb = 0;
	while (segs) {
		nskb = segs->next;
		segs->next = NULL;
		qdisc_skb_cb(segs)->pkt_len = segs->len;
		ret = qdisc_enqueue(segs, q->qdisc);
		if (ret != NET_XMIT_SUCCESS) {
			if (net_xmit_drop_count(ret))
				sch->qstats.drops++;
		} else {
			nb++;
		}
		segs = nskb;
	}
	sch->q.qlen += nb;
	if (nb > 1)
		qdisc_tree_decrease_qlen(sch, 1 - nb);
	consume_skb(skb);
	return nb > 0 ? NET_XMIT_SUCCESS : NET_XMIT_DROP;
}

Example #2

File: sch_tbf.c Project: avagin/linux

/* GSO packet is too big, segment it so that tbf can transmit
 * each segment in time
 */
static int tbf_segment(struct sk_buff *skb, struct Qdisc *sch,
		       struct sk_buff **to_free)
{
	struct tbf_sched_data *q = qdisc_priv(sch);
	struct sk_buff *segs, *nskb;
	netdev_features_t features = netif_skb_features(skb);
	unsigned int len = 0, prev_len = qdisc_pkt_len(skb);
	int ret, nb;

	segs = skb_gso_segment(skb, features & ~NETIF_F_GSO_MASK);

	if (IS_ERR_OR_NULL(segs))
		return qdisc_drop(skb, sch, to_free);

	nb = 0;
	while (segs) {
		nskb = segs->next;
		skb_mark_not_on_list(segs);
		qdisc_skb_cb(segs)->pkt_len = segs->len;
		len += segs->len;
		ret = qdisc_enqueue(segs, q->qdisc, to_free);
		if (ret != NET_XMIT_SUCCESS) {
			if (net_xmit_drop_count(ret))
				qdisc_qstats_drop(sch);
		} else {
			nb++;
		}
		segs = nskb;
	}
	sch->q.qlen += nb;
	if (nb > 1)
		qdisc_tree_reduce_backlog(sch, 1 - nb, prev_len - len);
	consume_skb(skb);
	return nb > 0 ? NET_XMIT_SUCCESS : NET_XMIT_DROP;
}

Example #3

File: sch_sfb.c Project: AD5GB/kernel_n5_3.10-experimental

static inline struct sfb_skb_cb *sfb_skb_cb(const struct sk_buff *skb)
{
	qdisc_cb_private_validate(skb, sizeof(struct sfb_skb_cb));
	return (struct sfb_skb_cb *)qdisc_skb_cb(skb)->data;
}

Example #4

File: sch_netem.c Project: 12rafael/jellytimekernel

static inline struct netem_skb_cb *netem_skb_cb(struct sk_buff *skb)
{
	BUILD_BUG_ON(sizeof(skb->cb) <
		sizeof(struct qdisc_skb_cb) + sizeof(struct netem_skb_cb));
	return (struct netem_skb_cb *)qdisc_skb_cb(skb)->data;
}