netdev - [PATCH net-next 2/3] sctp: allow users to set netns ecn flag with sysctl

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Message-Id: <fdbf487b2e1b255b1bbf457b3112979c33b53066.1566807985.git.lucien.xin@gmail.com>
Date:   Mon, 26 Aug 2019 16:30:03 +0800
From:   Xin Long <lucien.xin@...il.com>
To:     network dev <netdev@...r.kernel.org>, linux-sctp@...r.kernel.org
Cc:     Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
        Neil Horman <nhorman@...driver.com>, davem@...emloft.net
Subject: [PATCH net-next 2/3] sctp: allow users to set netns ecn flag with sysctl

sysctl net.sctp.ecn_enable is added in this patch. It will allow
users to change the default sctp ecn flag, net.sctp.ecn_enable.

This feature was also required on this thread:

  http://lkml.iu.edu/hypermail/linux/kernel/0812.1/01858.html

Signed-off-by: Xin Long <lucien.xin@...il.com>
---
 net/sctp/sysctl.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index 1250751..238cf17 100644
--- a/net/sctp/sysctl.c
+++ b/net/sctp/sysctl.c
@@ -278,6 +278,13 @@ static struct ctl_table sctp_net_table[] = {
 		.proc_handler	= proc_dointvec,
 	},
 	{
+		.procname	= "ecn_enable",
+		.data		= &init_net.sctp.ecn_enable,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
 		.procname	= "addr_scope_policy",
 		.data		= &init_net.sctp.scope_policy,
 		.maxlen		= sizeof(int),
-- 
2.1.0