[PKT_SCHED]: HTB: Drop packet when direct queue is full

htb_enqueue(): Free skb and return NET_XMIT_DROP if a packet is
destined for the direct_queue but the direct_queue is full. (Before
this: erroneously returned NET_XMIT_SUCCESS even though the packet was
not enqueued)

Signed-off-by: Asim Shankar <asimshankar@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index a85935e7d53d..558cc087e602 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -717,6 +717,10 @@ static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch)
         if (q->direct_queue.qlen < q->direct_qlen) {
             __skb_queue_tail(&q->direct_queue, skb);
             q->direct_pkts++;
+        } else {
+            kfree_skb(skb);
+            sch->qstats.drops++;
+            return NET_XMIT_DROP;
         }
 #ifdef CONFIG_NET_CLS_ACT
     } else if (!cl) {