netdev - [PATCH] sctp: disable max_burst when the max

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Message-ID: <529D7A82.3070207@huawei.com>
Date:	Tue, 3 Dec 2013 14:30:26 +0800
From:	Wang Weidong <wangweidong1@...wei.com>
To:	David Miller <davem@...emloft.net>,
	Neil Horman <nhorman@...driver.com>,
	Vlad Yasevich <vyasevich@...il.com>
CC:	Michael Tuexen <Michael.Tuexen@...chi.franken.de>,
	<linux-sctp@...r.kernel.org>, <netdev@...r.kernel.org>,
	<dingtianhong@...wei.com>
Subject: [PATCH] sctp: disable max_burst when the max_burst is 0

As Michael pointed out that when max_burst is 0, it just disable
max_burst. It declared in rfc6458#section-8.1.24. so add the check
in sctp_transport_burst_limited, when it 0, just do nothing.

Suggested-by: Vlad Yasevich <vyasevich@...il.com>
Suggested-by: Michael Tuexen <Michael.Tuexen@...chi.franken.de>
Signed-off-by: Wang Weidong <wangweidong1@...wei.com>
---
 net/sctp/transport.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index e332efb..e580e34 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -573,7 +573,8 @@ void sctp_transport_burst_limited(struct sctp_transport *t)
 	u32 old_cwnd = t->cwnd;
 	u32 max_burst_bytes;
 
-	if (t->burst_limited)
+	/* if the max_burst is 0, do notihing */
+	if (t->burst_limited || !asoc->max_burst)
 		return;
 
 	max_burst_bytes = t->flight_size + (asoc->max_burst * asoc->pathmtu);
-- 
1.7.12


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