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Commit b1815fd9 authored by Alexander Aring's avatar Alexander Aring Committed by Marcel Holtmann
Browse files

6lowpan: add debugfs support 



This patch will introduce a 6lowpan entry into the debugfs if enabled.
Inside this 6lowpan directory we create a subdirectories of all 6lowpan
interfaces to offer a per interface debugfs support.

Reviewed-by: default avatarStefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: default avatarAlexander Aring <alex.aring@gmail.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 00f59314

include/net/6lowpan.h

+3 −0
Original line number Diff line number Diff line
@@ -53,6 +53,8 @@ 
#ifndef __6LOWPAN_H__

#define __6LOWPAN_H__



#include <linux/debugfs.h>



#include <net/ipv6.h>

#include <net/net_namespace.h>
@@ -98,6 +100,7 @@ enum lowpan_lltypes { 


struct lowpan_priv {

	enum lowpan_lltypes lltype;

	struct dentry *iface_debugfs;



	/* must be last */

	u8 priv[0] __aligned(sizeof(void *));

net/6lowpan/6lowpan_i.h

0 → 100644
+28 −0
Original line number Diff line number Diff line 
#ifndef __6LOWPAN_I_H

#define __6LOWPAN_I_H



#include <linux/netdevice.h>



#ifdef CONFIG_6LOWPAN_DEBUGFS

int lowpan_dev_debugfs_init(struct net_device *dev);

void lowpan_dev_debugfs_exit(struct net_device *dev);



int __init lowpan_debugfs_init(void);

void lowpan_debugfs_exit(void);

#else

static inline int lowpan_dev_debugfs_init(struct net_device *dev)

{

	return 0;

}



static inline void lowpan_dev_debugfs_exit(struct net_device *dev) { }



static inline int __init lowpan_debugfs_init(void)

{

	return 0;

}



static inline void lowpan_debugfs_exit(void) { }

#endif /* CONFIG_6LOWPAN_DEBUGFS */



#endif /* __6LOWPAN_I_H */

net/6lowpan/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -5,6 +5,14 @@ menuconfig 6LOWPAN 
	  This enables IPv6 over Low power Wireless Personal Area Network -

	  "6LoWPAN" which is supported by IEEE 802.15.4 or Bluetooth stacks.



config 6LOWPAN_DEBUGFS

	bool "6LoWPAN debugfs support"

	depends on 6LOWPAN

	depends on DEBUG_FS

	---help---

	  This enables 6LoWPAN debugfs support. For example to manipulate

	  IPHC context information at runtime.



menuconfig 6LOWPAN_NHC

	tristate "Next Header and Generic Header Compression Support"

	depends on 6LOWPAN

net/6lowpan/Makefile

+1 −0
Original line number Diff line number Diff line 
obj-$(CONFIG_6LOWPAN) += 6lowpan.o



6lowpan-y := core.o iphc.o nhc.o

6lowpan-$(CONFIG_6LOWPAN_DEBUGFS) += debugfs.o



#rfc6282 nhcs

obj-$(CONFIG_6LOWPAN_NHC_DEST) += nhc_dest.o

net/6lowpan/core.c

+27 −1
Original line number Diff line number Diff line
@@ -15,9 +15,13 @@ 


#include <net/6lowpan.h>



#include "6lowpan_i.h"



int lowpan_register_netdevice(struct net_device *dev,

			      enum lowpan_lltypes lltype)

{

	int ret;



	dev->addr_len = EUI64_ADDR_LEN;

	dev->type = ARPHRD_6LOWPAN;

	dev->mtu = IPV6_MIN_MTU;
@@ -25,7 +29,15 @@ int lowpan_register_netdevice(struct net_device *dev, 


	lowpan_priv(dev)->lltype = lltype;



	return register_netdevice(dev);

	ret = lowpan_dev_debugfs_init(dev);

	if (ret < 0)

		return ret;



	ret = register_netdevice(dev);

	if (ret < 0)

		lowpan_dev_debugfs_exit(dev);



	return ret;

}

EXPORT_SYMBOL(lowpan_register_netdevice);
@@ -44,6 +56,7 @@ EXPORT_SYMBOL(lowpan_register_netdev); 
void lowpan_unregister_netdevice(struct net_device *dev)

{

	unregister_netdevice(dev);

	lowpan_dev_debugfs_exit(dev);

}

EXPORT_SYMBOL(lowpan_unregister_netdevice);
@@ -57,6 +70,12 @@ EXPORT_SYMBOL(lowpan_unregister_netdev); 


static int __init lowpan_module_init(void)

{

	int ret;



	ret = lowpan_debugfs_init();

	if (ret < 0)

		return ret;



	request_module_nowait("ipv6");



	request_module_nowait("nhc_dest");
@@ -69,6 +88,13 @@ static int __init lowpan_module_init(void) 


	return 0;

}



static void __exit lowpan_module_exit(void)

{

	lowpan_debugfs_exit();

}



module_init(lowpan_module_init);

module_exit(lowpan_module_exit);



MODULE_LICENSE("GPL");