netdev - [PATCH] sctp: loading sctp when load sctp

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Date:	Thu, 12 Dec 2013 20:32:36 +0800
From:	Wang Weidong <wangweidong1@...wei.com>
To:	Vlad Yasevich <vyasevich@...il.com>,
	Neil Horman <nhorman@...driver.com>,
	David Miller <davem@...emloft.net>
CC:	<linux-sctp@...r.kernel.org>, <netdev@...r.kernel.org>
Subject: [PATCH] sctp: loading sctp when load sctp_probe

when I modprobe sctp_probe, it failed with "FATAL: ". I found that 
sctp should load before sctp_probe register jprobe. So I add a
sctp_setup_jprobe for loading 'sctp' when first failed to register
jprobe, just do this similar to dccp_probe.

Signed-off-by: Wang Weidong <wangweidong1@...wei.com>
---
 net/sctp/probe.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/net/sctp/probe.c b/net/sctp/probe.c
index 53c452e..cd9565a 100644
--- a/net/sctp/probe.c
+++ b/net/sctp/probe.c
@@ -182,6 +182,17 @@ static struct jprobe sctp_recv_probe = {
 	.entry	= jsctp_sf_eat_sack,
 };
 
+static __init int sctp_setup_jprobe(void)
+{
+	int ret = register_jprobe(&sctp_recv_probe);
+
+	if (ret) {
+		request_module("sctp");
+		ret = register_jprobe(&sctp_recv_probe);
+	}
+	return ret;
+}
+
 static __init int sctpprobe_init(void)
 {
 	int ret = -ENOMEM;
@@ -202,7 +213,7 @@ static __init int sctpprobe_init(void)
 			 &sctpprobe_fops))
 		goto free_kfifo;
 
-	ret = register_jprobe(&sctp_recv_probe);
+	ret = sctp_setup_jprobe();
 	if (ret)
 		goto remove_proc;
 
-- 
1.7.12


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