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Code Issues Releases Wiki Activity

i40e: Strip configfs code

Browse source 
The use of configfs is not allowed in network drivers.  Strip the code that
uses it.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Greg Rose 2015-03-06 01:41:07 +00:00 committed by Jeff Kirsher
parent b85e911b75
commit cd77f5e1fa
5 changed files with 0 additions and 374 deletions
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9
drivers/net/ethernet/intel/Kconfig
View file

@ -303,15 +303,6 @@ config I40E_FCOE
If unsure, say N.
config I40E_CONFIGFS_FS
bool "Config File System Support (configfs)"
default n
depends on I40E && CONFIGFS_FS && !(I40E=y && CONFIGFS_FS=m)
---help---
Provides support for the configfs file system for additional
driver configuration. Say Y here if you want to use the
configuration file system in the driver.
config I40EVF
tristate "Intel(R) XL710 X710 Virtual Function Ethernet support"
depends on PCI_MSI

1
drivers/net/ethernet/intel/i40e/Makefile
View file

@ -37,7 +37,6 @@ i40e-objs := i40e_main.o \
i40e_hmc.o \
i40e_lan_hmc.o \
i40e_nvm.o \
i40e_configfs.o \
i40e_debugfs.o \
i40e_diag.o \
i40e_txrx.o \

4
drivers/net/ethernet/intel/i40e/i40e.h
View file

@ -749,10 +749,6 @@ int i40e_ptp_get_ts_config(struct i40e_pf *pf, struct ifreq *ifr);
void i40e_ptp_init(struct i40e_pf *pf);
void i40e_ptp_stop(struct i40e_pf *pf);
int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi);
#if IS_ENABLED(CONFIG_I40E_CONFIGFS_FS)
int i40e_configfs_init(void);
void i40e_configfs_exit(void);
#endif /* CONFIG_I40E_CONFIGFS_FS */
i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf);
i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf);
i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf);

354
drivers/net/ethernet/intel/i40e/i40e_configfs.c
View file

@ -1,354 +0,0 @@
/*******************************************************************************
*
* Intel Ethernet Controller XL710 Family Linux Driver
* Copyright(c) 2013 - 2015 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, see <http://www.gnu.org/licenses/>.
*
* 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
*
******************************************************************************/
#include <linux/configfs.h>
#include "i40e.h"
#if IS_ENABLED(CONFIG_I40E_CONFIGFS_FS)
/**
* configfs structure for i40e
*
* This file adds code for configfs support for the i40e driver. This sets
* up a filesystem under /sys/kernel/config in which configuration changes
* can be made for the driver's netdevs.
*
* The initialization in this code creates the "i40e" entry in the configfs
* system. After that, the user needs to use mkdir to create configurations
* for specific netdev ports; for example "mkdir eth3". This code will verify
* that such a netdev exists and that it is owned by i40e.
*
**/
struct i40e_cfgfs_vsi {
struct config_item item;
struct i40e_vsi *vsi;
};
static inline struct i40e_cfgfs_vsi *to_i40e_cfgfs_vsi(struct config_item *item)
{
return item ? container_of(item, struct i40e_cfgfs_vsi, item) : NULL;
}
static struct configfs_attribute i40e_cfgfs_vsi_attr_min_bw = {
.ca_owner = THIS_MODULE,
.ca_name = "min_bw",
.ca_mode = S_IRUGO | S_IWUSR,
};
static struct configfs_attribute i40e_cfgfs_vsi_attr_max_bw = {
.ca_owner = THIS_MODULE,
.ca_name = "max_bw",
.ca_mode = S_IRUGO | S_IWUSR,
};
static struct configfs_attribute i40e_cfgfs_vsi_attr_commit = {
.ca_owner = THIS_MODULE,
.ca_name = "commit",
.ca_mode = S_IRUGO | S_IWUSR,
};
static struct configfs_attribute i40e_cfgfs_vsi_attr_port_count = {
.ca_owner = THIS_MODULE,
.ca_name = "ports",
.ca_mode = S_IRUGO | S_IWUSR,
};
static struct configfs_attribute i40e_cfgfs_vsi_attr_part_count = {
.ca_owner = THIS_MODULE,
.ca_name = "partitions",
.ca_mode = S_IRUGO | S_IWUSR,
};
static struct configfs_attribute *i40e_cfgfs_vsi_attrs[] = {
&i40e_cfgfs_vsi_attr_min_bw,
&i40e_cfgfs_vsi_attr_max_bw,
&i40e_cfgfs_vsi_attr_commit,
&i40e_cfgfs_vsi_attr_port_count,
&i40e_cfgfs_vsi_attr_part_count,
NULL,
};
/**
* i40e_cfgfs_vsi_attr_show - Show a VSI's NPAR BW partition info
* @item: A pointer back to the configfs item created on driver load
* @attr: A pointer to this item's configuration attribute
* @page: A pointer to the output buffer
**/
static ssize_t i40e_cfgfs_vsi_attr_show(struct config_item *item,
struct configfs_attribute *attr,
char *page)
{
struct i40e_cfgfs_vsi *i40e_cfgfs_vsi = to_i40e_cfgfs_vsi(item);
struct i40e_pf *pf = i40e_cfgfs_vsi->vsi->back;
ssize_t count;
if (i40e_cfgfs_vsi->vsi != pf->vsi[pf->lan_vsi])
return 0;
if (strncmp(attr->ca_name, "min_bw", 6) == 0)
count = sprintf(page, "%s %s %d%%\n",
i40e_cfgfs_vsi->vsi->netdev->name,
(pf->npar_min_bw & I40E_ALT_BW_RELATIVE_MASK) ?
"Relative Min BW" : "Absolute Min BW",
pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK);
else if (strncmp(attr->ca_name, "max_bw", 6) == 0)
count = sprintf(page, "%s %s %d%%\n",
i40e_cfgfs_vsi->vsi->netdev->name,
(pf->npar_max_bw & I40E_ALT_BW_RELATIVE_MASK) ?
"Relative Max BW" : "Absolute Max BW",
pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK);
else if (strncmp(attr->ca_name, "ports", 5) == 0)
count = sprintf(page, "%d\n",
pf->hw.num_ports);
else if (strncmp(attr->ca_name, "partitions", 10) == 0)
count = sprintf(page, "%d\n",
pf->hw.num_partitions);
else
return 0;
return count;
}
/**
* i40e_cfgfs_vsi_attr_store - Show a VSI's NPAR BW partition info
* @item: A pointer back to the configfs item created on driver load
* @attr: A pointer to this item's configuration attribute
* @page: A pointer to the user input buffer holding the user input values
**/
static ssize_t i40e_cfgfs_vsi_attr_store(struct config_item *item,
struct configfs_attribute *attr,
const char *page, size_t count)
{
struct i40e_cfgfs_vsi *i40e_cfgfs_vsi = to_i40e_cfgfs_vsi(item);
struct i40e_pf *pf = i40e_cfgfs_vsi->vsi->back;
char *p = (char *)page;
int rc;
unsigned long tmp;
if (i40e_cfgfs_vsi->vsi != pf->vsi[pf->lan_vsi])
return 0;
if (!p || (*p && (*p == '\n')))
return -EINVAL;
rc = kstrtoul(p, 10, &tmp);
if (rc)
return rc;
if (tmp > 100)
return -ERANGE;
if (strncmp(attr->ca_name, "min_bw", 6) == 0) {
if (tmp > (pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK))
return -ERANGE;
/* Preserve the valid and relative BW bits - the rest is
* don't care.
*/
pf->npar_min_bw &= (I40E_ALT_BW_RELATIVE_MASK |
I40E_ALT_BW_VALID_MASK);
pf->npar_min_bw |= (tmp & I40E_ALT_BW_VALUE_MASK);
i40e_set_npar_bw_setting(pf);
} else if (strncmp(attr->ca_name, "max_bw", 6) == 0) {
if (tmp < 1 ||
tmp < (pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK))
return -ERANGE;
/* Preserve the valid and relative BW bits - the rest is
* don't care.
*/
pf->npar_max_bw &= (I40E_ALT_BW_RELATIVE_MASK |
I40E_ALT_BW_VALID_MASK);
pf->npar_max_bw |= (tmp & I40E_ALT_BW_VALUE_MASK);
i40e_set_npar_bw_setting(pf);
} else if (strncmp(attr->ca_name, "commit", 6) == 0 && tmp == 1) {
if (i40e_commit_npar_bw_setting(pf))
return -EIO;
}
return count;
}
/**
* i40e_cfgfs_vsi_release - Free up the configuration item memory
* @item: A pointer back to the configfs item created on driver load
**/
static void i40e_cfgfs_vsi_release(struct config_item *item)
{
kfree(to_i40e_cfgfs_vsi(item));
}
static struct configfs_item_operations i40e_cfgfs_vsi_item_ops = {
.release = i40e_cfgfs_vsi_release,
.show_attribute = i40e_cfgfs_vsi_attr_show,
.store_attribute = i40e_cfgfs_vsi_attr_store,
};
static struct config_item_type i40e_cfgfs_vsi_type = {
.ct_item_ops = &i40e_cfgfs_vsi_item_ops,
.ct_attrs = i40e_cfgfs_vsi_attrs,
.ct_owner = THIS_MODULE,
};
struct i40e_cfgfs_group {
struct config_group group;
};
/**
* to_i40e_cfgfs_group - Get the group pointer from the config item
* @item: A pointer back to the configfs item created on driver load
**/
static inline struct i40e_cfgfs_group *
to_i40e_cfgfs_group(struct config_item *item)
{
return item ? container_of(to_config_group(item),
struct i40e_cfgfs_group, group) : NULL;
}
/**
* i40e_cfgfs_group_make_item - Create the configfs item with group container
* @group: A pointer to our configfs group
* @name: A pointer to the nume of the device we're looking for
**/
static struct config_item *
i40e_cfgfs_group_make_item(struct config_group *group, const char *name)
{
struct i40e_cfgfs_vsi *i40e_cfgfs_vsi;
struct net_device *netdev;
struct i40e_netdev_priv *np;
read_lock(&dev_base_lock);
netdev = first_net_device(&init_net);
while (netdev) {
if (strncmp(netdev->name, name, sizeof(netdev->name)) == 0)
break;
netdev = next_net_device(netdev);
}
read_unlock(&dev_base_lock);
if (!netdev)
return ERR_PTR(-ENODEV);
/* is this netdev owned by i40e? */
if (netdev->netdev_ops->ndo_open != i40e_open)
return ERR_PTR(-EACCES);
i40e_cfgfs_vsi = kzalloc(sizeof(*i40e_cfgfs_vsi), GFP_KERNEL);
if (!i40e_cfgfs_vsi)
return ERR_PTR(-ENOMEM);
np = netdev_priv(netdev);
i40e_cfgfs_vsi->vsi = np->vsi;
config_item_init_type_name(&i40e_cfgfs_vsi->item, name,
&i40e_cfgfs_vsi_type);
return &i40e_cfgfs_vsi->item;
}
static struct configfs_attribute i40e_cfgfs_group_attr_description = {
.ca_owner = THIS_MODULE,
.ca_name = "description",
.ca_mode = S_IRUGO,
};
static struct configfs_attribute *i40e_cfgfs_group_attrs[] = {
&i40e_cfgfs_group_attr_description,
NULL,
};
static ssize_t i40e_cfgfs_group_attr_show(struct config_item *item,
struct configfs_attribute *attr,
char *page)
{
return sprintf(page,
"i40e\n"
"\n"
"This subsystem allows the modification of network port configurations.\n"
"To start, use the name of the network port to be configured in a 'mkdir'\n"
"command, e.g. 'mkdir eth3'.\n");
}
static void i40e_cfgfs_group_release(struct config_item *item)
{
kfree(to_i40e_cfgfs_group(item));
}
static struct configfs_item_operations i40e_cfgfs_group_item_ops = {
.release = i40e_cfgfs_group_release,
.show_attribute = i40e_cfgfs_group_attr_show,
};
/* Note that, since no extra work is required on ->drop_item(),
* no ->drop_item() is provided.
*/
static struct configfs_group_operations i40e_cfgfs_group_ops = {
.make_item = i40e_cfgfs_group_make_item,
};
static struct config_item_type i40e_cfgfs_group_type = {
.ct_item_ops = &i40e_cfgfs_group_item_ops,
.ct_group_ops = &i40e_cfgfs_group_ops,
.ct_attrs = i40e_cfgfs_group_attrs,
.ct_owner = THIS_MODULE,
};
static struct configfs_subsystem i40e_cfgfs_group_subsys = {
.su_group = {
.cg_item = {
.ci_namebuf = "i40e",
.ci_type = &i40e_cfgfs_group_type,
},
},
};
/**
* i40e_configfs_init - Initialize configfs support for our driver
**/
int i40e_configfs_init(void)
{
int ret;
struct configfs_subsystem *subsys;
subsys = &i40e_cfgfs_group_subsys;
config_group_init(&subsys->su_group);
mutex_init(&subsys->su_mutex);
ret = configfs_register_subsystem(subsys);
if (ret) {
pr_err("Error %d while registering configfs subsystem %s\n",
ret, subsys->su_group.cg_item.ci_namebuf);
return ret;
}
return 0;
}
/**
* i40e_configfs_init - Bail out - unregister configfs subsystem and release
**/
void i40e_configfs_exit(void)
{
configfs_unregister_subsystem(&i40e_cfgfs_group_subsys);
}
#endif /* IS_ENABLED(CONFIG_I40E_CONFIGFS_FS) */

6
drivers/net/ethernet/intel/i40e/i40e_main.c
View file

@ -10287,9 +10287,6 @@ static int __init i40e_init_module(void)
i40e_driver_string, i40e_driver_version_str);
pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
#if IS_ENABLED(CONFIG_I40E_CONFIGFS_FS)
i40e_configfs_init();
#endif /* CONFIG_I40E_CONFIGFS_FS */
i40e_dbg_init();
return pci_register_driver(&i40e_driver);
}
@ -10305,8 +10302,5 @@ static void __exit i40e_exit_module(void)
{
pci_unregister_driver(&i40e_driver);
i40e_dbg_exit();
#if IS_ENABLED(CONFIG_I40E_CONFIGFS_FS)
i40e_configfs_exit();
#endif /* CONFIG_I40E_CONFIGFS_FS */
}
module_exit(i40e_exit_module);