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Message-ID: <1416921892-4756-4-git-send-email-yangyingliang@huawei.com>
Date: Tue, 25 Nov 2014 21:24:52 +0800
From: Yang Yingliang <yangyingliang@...wei.com>
To: <netdev@...r.kernel.org>
CC: <eric.dumazet@...il.com>, <davem@...emloft.net>
Subject: [PATCH net-next 3/3] sch_fq: segment too big GSO packets
If a GSO packet cost more than 125ms to send, segment the
packet and send individual segments.
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
net/sched/sch_fq.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/net/sched/sch_fq.c b/net/sched/sch_fq.c
index ec6eff8..0119340 100644
--- a/net/sched/sch_fq.c
+++ b/net/sched/sch_fq.c
@@ -423,6 +423,30 @@ static int fq_enqueue(struct sk_buff *skb, struct Qdisc *sch)
return qdisc_drop(skb, sch);
}
+ if (skb_is_gso(skb) && skb_is_too_big(skb, q, NULL)) {
+ struct sk_buff *segs, *nskb;
+ netdev_features_t features = netif_skb_features(skb);
+ int nb = 0;
+
+ segs = skb_gso_segment(skb, features & ~NETIF_F_GSO_MASK);
+
+ if (IS_ERR_OR_NULL(segs))
+ goto enqueue_out;
+
+ while (segs) {
+ nskb = segs->next;
+ qdisc_skb_cb(segs)->pkt_len = segs->len;
+ __fq_enqueue(segs, sch, f);
+ nb++;
+ segs = nskb;
+ }
+ if (nb > 1)
+ qdisc_tree_decrease_qlen(sch, 1 - nb);
+ consume_skb(skb);
+ return NET_XMIT_SUCCESS;
+ }
+
+enqueue_out:
return __fq_enqueue(skb, sch, f);
}
--
1.8.0
--
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