lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
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


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists