netdev - [PATCH 4/5 2.6.21-rc7] l2tp: pppox protocol module load

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Message-Id: <200704231601.l3NG13mC030171@quickie.katalix.com>
Date:	Mon, 23 Apr 2007 17:01:03 +0100
From:	James Chapman <jchapman@...alix.com>
To:	netdev@...r.kernel.org
Subject: [PATCH 4/5 2.6.21-rc7] l2tp: pppox protocol module load

[L2TP]: Add the ability to autoload a pppox protocol module.

This patch allows a name "pppox-proto-nnn" to be used in modprobe.conf
to autoload a PPPoX protocol nnn.

Signed-off-by: James Chapman <jchapman@...alix.com>

Index: linux-2.6.21-rc7/drivers/net/pppox.c
===================================================================
--- linux-2.6.21-rc7.orig/drivers/net/pppox.c
+++ linux-2.6.21-rc7/drivers/net/pppox.c
@@ -114,6 +114,13 @@ static int pppox_create(struct socket *s
 		goto out;
 
 	rc = -EPROTONOSUPPORT;
+#ifdef CONFIG_KMOD
+	if (!pppox_protos[protocol]) {
+		char buffer[32];
+		sprintf(buffer, "pppox-proto-%d", protocol);
+		request_module(buffer);
+	}
+#endif
 	if (!pppox_protos[protocol] ||
 	    !try_module_get(pppox_protos[protocol]->owner))
 		goto out;
-
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