Commit 00949167 authored by Catherine Sullivan's avatar Catherine Sullivan Committed by Jeff Kirsher
Browse files

ixgbe: add debugfs support 



This patch adds debugfs support to the ixgbe driver to give
users the ability to access kernel information and to
simulate kernel events.

The filesystem is set up in the following driver/PCI-instance
hierarchy:
<debugfs>
   |-- ixgbe
	|-- PCI instance
	|	|-- attribute files

Signed-off-by: default avatarCatherine Sullivan <catherine.sullivan@intel.com>
Tested-by: default avatarPhil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent d6ea0754

drivers/net/ethernet/intel/ixgbe/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -32,7 +32,7 @@ 


obj-$(CONFIG_IXGBE) += ixgbe.o



ixgbe-objs := ixgbe_main.o ixgbe_common.o ixgbe_ethtool.o \

ixgbe-objs := ixgbe_main.o ixgbe_common.o ixgbe_ethtool.o ixgbe_debugfs.o\

              ixgbe_82599.o ixgbe_82598.o ixgbe_phy.o ixgbe_sriov.o \

              ixgbe_mbx.o ixgbe_x540.o ixgbe_lib.o

drivers/net/ethernet/intel/ixgbe/ixgbe.h

+9 −1
Original line number Diff line number Diff line
@@ -597,6 +597,9 @@ struct ixgbe_adapter { 
#ifdef CONFIG_IXGBE_HWMON

	struct hwmon_buff ixgbe_hwmon_buff;

#endif /* CONFIG_IXGBE_HWMON */

#ifdef CONFIG_DEBUG_FS

	struct dentry *ixgbe_dbg_adapter;

#endif /*CONFIG_DEBUG_FS*/

};



struct ixgbe_fdir_filter {
@@ -725,7 +728,12 @@ extern int ixgbe_fcoe_get_hbainfo(struct net_device *netdev, 
				  struct netdev_fcoe_hbainfo *info);

extern u8 ixgbe_fcoe_get_tc(struct ixgbe_adapter *adapter);

#endif /* IXGBE_FCOE */



#ifdef CONFIG_DEBUG_FS

extern void ixgbe_dbg_adapter_init(struct ixgbe_adapter *adapter);

extern void ixgbe_dbg_adapter_exit(struct ixgbe_adapter *adapter);

extern void ixgbe_dbg_init(void);

extern void ixgbe_dbg_exit(void);

#endif /* CONFIG_DEBUG_FS */

static inline struct netdev_queue *txring_txq(const struct ixgbe_ring *ring)

{

	return netdev_get_tx_queue(ring->netdev, ring->queue_index);

drivers/net/ethernet/intel/ixgbe/ixgbe_debugfs.c

0 → 100644
+79 −0
Original line number Diff line number Diff line 
/*******************************************************************************



  Intel 10 Gigabit PCI Express Linux driver

  Copyright(c) 1999 - 2012 Intel Corporation.



  This program is free software; you can redistribute it and/or modify it

  under the terms and conditions of the GNU General Public License,

  version 2, as published by the Free Software Foundation.



  This program is distributed in the hope it will be useful, but WITHOUT

  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

  more details.



  You should have received a copy of the GNU General Public License along with

  this program; if not, write to the Free Software Foundation, Inc.,

  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.



  The full GNU General Public License is included in this distribution in

  the file called "COPYING".



  Contact Information:

  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>

  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497



*******************************************************************************/



#ifdef CONFIG_DEBUG_FS



#include <linux/debugfs.h>

#include <linux/module.h>



#include "ixgbe.h"



static struct dentry *ixgbe_dbg_root;



/**

 * ixgbe_dbg_adapter_init - setup the debugfs directory for the adapter

 * @adapter: the adapter that is starting up

 **/

void ixgbe_dbg_adapter_init(struct ixgbe_adapter *adapter)

{

	const char *name = pci_name(adapter->pdev);



	adapter->ixgbe_dbg_adapter = debugfs_create_dir(name, ixgbe_dbg_root);

	if (!adapter->ixgbe_dbg_adapter)

		e_dev_err("debugfs entry for %s failed\n", name);

}



/**

 * ixgbe_dbg_adapter_exit - clear out the adapter's debugfs entries

 * @pf: the pf that is stopping

 **/

void ixgbe_dbg_adapter_exit(struct ixgbe_adapter *adapter)

{

	if (adapter->ixgbe_dbg_adapter)

		debugfs_remove_recursive(adapter->ixgbe_dbg_adapter);

	adapter->ixgbe_dbg_adapter = NULL;

}



/**

 * ixgbe_dbg_init - start up debugfs for the driver

 **/

void ixgbe_dbg_init(void)

{

	ixgbe_dbg_root = debugfs_create_dir(ixgbe_driver_name, NULL);

	if (ixgbe_dbg_root == NULL)

		pr_err("init of debugfs failed\n");

}



/**

 * ixgbe_dbg_exit - clean out the driver's debugfs entries

 **/

void ixgbe_dbg_exit(void)

{

	debugfs_remove_recursive(ixgbe_dbg_root);

}



#endif /* CONFIG_DEBUG_FS */

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

+17 −0
Original line number Diff line number Diff line
@@ -7448,6 +7448,10 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, 
		e_err(probe, "failed to allocate sysfs resources\n");

#endif /* CONFIG_IXGBE_HWMON */



#ifdef CONFIG_DEBUG_FS

	ixgbe_dbg_adapter_init(adapter);

#endif /* CONFIG_DEBUG_FS */



	return 0;



err_register:
@@ -7482,6 +7486,10 @@ static void __devexit ixgbe_remove(struct pci_dev *pdev) 
	struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);

	struct net_device *netdev = adapter->netdev;



#ifdef CONFIG_DEBUG_FS

	ixgbe_dbg_adapter_exit(adapter);

#endif /*CONFIG_DEBUG_FS */



	set_bit(__IXGBE_DOWN, &adapter->state);

	cancel_work_sync(&adapter->service_task);
@@ -7737,6 +7745,10 @@ static int __init ixgbe_init_module(void) 
	pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version);

	pr_info("%s\n", ixgbe_copyright);



#ifdef CONFIG_DEBUG_FS

	ixgbe_dbg_init();

#endif /* CONFIG_DEBUG_FS */



#ifdef CONFIG_IXGBE_DCA

	dca_register_notify(&dca_notifier);

#endif
@@ -7759,6 +7771,11 @@ static void __exit ixgbe_exit_module(void) 
	dca_unregister_notify(&dca_notifier);

#endif

	pci_unregister_driver(&ixgbe_driver);



#ifdef CONFIG_DEBUG_FS

	ixgbe_dbg_exit();

#endif /* CONFIG_DEBUG_FS */



	rcu_barrier(); /* Wait for completion of call_rcu()'s */

}

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