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android_kernel_motorola_sm6225/drivers/net/wireless/libertas/persistcfg.c
Wang Chen 8f15ea42b6 netdevice: safe convert to netdev_priv() #part-3 
We have some reasons to kill netdev->priv:
1. netdev->priv is equal to netdev_priv().
2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously
   netdev_priv() is more flexible than netdev->priv.
But we cann't kill netdev->priv, because so many drivers reference to it
directly.

This patch is a safe convert for netdev->priv to netdev_priv(netdev).
Since all of the netdev->priv is only for read.
But it is too big to be sent in one mail.
I split it to 4 parts and make every part smaller than 100,000 bytes,
which is max size allowed by vger.

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-12 23:38:36 -08:00

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#include <linux/moduleparam.h>
#include <linux/delay.h>
#include <linux/etherdevice.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/kthread.h>
#include <linux/kfifo.h>
#include "host.h"
#include "decl.h"
#include "dev.h"
#include "wext.h"
#include "debugfs.h"
#include "scan.h"
#include "assoc.h"
#include "cmd.h"
static int mesh_get_default_parameters(struct device *dev,
struct mrvl_mesh_defaults *defs)
{
struct lbs_private *priv = netdev_priv(to_net_dev(dev));
struct cmd_ds_mesh_config cmd;
int ret;
memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_GET,
CMD_TYPE_MESH_GET_DEFAULTS);
if (ret)
return -EOPNOTSUPP;
memcpy(defs, &cmd.data[0], sizeof(struct mrvl_mesh_defaults));
return 0;
}
/**
* @brief Get function for sysfs attribute bootflag
*/
static ssize_t bootflag_get(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mrvl_mesh_defaults defs;
int ret;
ret = mesh_get_default_parameters(dev, &defs);
if (ret)
return ret;
return snprintf(buf, 12, "%d\n", le32_to_cpu(defs.bootflag));
}
/**
* @brief Set function for sysfs attribute bootflag
*/
static ssize_t bootflag_set(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct lbs_private *priv = netdev_priv(to_net_dev(dev));
struct cmd_ds_mesh_config cmd;
uint32_t datum;
int ret;
memset(&cmd, 0, sizeof(cmd));
ret = sscanf(buf, "%d", &datum);
if ((ret != 1) || (datum > 1))
return -EINVAL;
*((__le32 *)&cmd.data[0]) = cpu_to_le32(!!datum);
cmd.length = cpu_to_le16(sizeof(uint32_t));
ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
CMD_TYPE_MESH_SET_BOOTFLAG);
if (ret)
return ret;
return strlen(buf);
}
/**
* @brief Get function for sysfs attribute boottime
*/
static ssize_t boottime_get(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mrvl_mesh_defaults defs;
int ret;
ret = mesh_get_default_parameters(dev, &defs);
if (ret)
return ret;
return snprintf(buf, 12, "%d\n", defs.boottime);
}
/**
* @brief Set function for sysfs attribute boottime
*/
static ssize_t boottime_set(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct lbs_private *priv = netdev_priv(to_net_dev(dev));
struct cmd_ds_mesh_config cmd;
uint32_t datum;
int ret;
memset(&cmd, 0, sizeof(cmd));
ret = sscanf(buf, "%d", &datum);
if ((ret != 1) || (datum > 255))
return -EINVAL;
/* A too small boot time will result in the device booting into
* standalone (no-host) mode before the host can take control of it,
* so the change will be hard to revert. This may be a desired
* feature (e.g to configure a very fast boot time for devices that
* will not be attached to a host), but dangerous. So I'm enforcing a
* lower limit of 20 seconds: remove and recompile the driver if this
* does not work for you.
*/
datum = (datum < 20) ? 20 : datum;
cmd.data[0] = datum;
cmd.length = cpu_to_le16(sizeof(uint8_t));
ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
CMD_TYPE_MESH_SET_BOOTTIME);
if (ret)
return ret;
return strlen(buf);
}
/**
* @brief Get function for sysfs attribute channel
*/
static ssize_t channel_get(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mrvl_mesh_defaults defs;
int ret;
ret = mesh_get_default_parameters(dev, &defs);
if (ret)
return ret;
return snprintf(buf, 12, "%d\n", le16_to_cpu(defs.channel));
}
/**
* @brief Set function for sysfs attribute channel
*/
static ssize_t channel_set(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct lbs_private *priv = netdev_priv(to_net_dev(dev));
struct cmd_ds_mesh_config cmd;
uint32_t datum;
int ret;
memset(&cmd, 0, sizeof(cmd));
ret = sscanf(buf, "%d", &datum);
if (ret != 1 || datum < 1 || datum > 11)
return -EINVAL;
*((__le16 *)&cmd.data[0]) = cpu_to_le16(datum);
cmd.length = cpu_to_le16(sizeof(uint16_t));
ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
CMD_TYPE_MESH_SET_DEF_CHANNEL);
if (ret)
return ret;
return strlen(buf);
}
/**
* @brief Get function for sysfs attribute mesh_id
*/
static ssize_t mesh_id_get(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct mrvl_mesh_defaults defs;
int maxlen;
int ret;
ret = mesh_get_default_parameters(dev, &defs);
if (ret)
return ret;
if (defs.meshie.val.mesh_id_len > IW_ESSID_MAX_SIZE) {
lbs_pr_err("inconsistent mesh ID length");
defs.meshie.val.mesh_id_len = IW_ESSID_MAX_SIZE;
}
/* SSID not null terminated: reserve room for \0 + \n */
maxlen = defs.meshie.val.mesh_id_len + 2;
maxlen = (PAGE_SIZE > maxlen) ? maxlen : PAGE_SIZE;
defs.meshie.val.mesh_id[defs.meshie.val.mesh_id_len] = '\0';
return snprintf(buf, maxlen, "%s\n", defs.meshie.val.mesh_id);
}
/**
* @brief Set function for sysfs attribute mesh_id
*/
static ssize_t mesh_id_set(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct cmd_ds_mesh_config cmd;
struct mrvl_mesh_defaults defs;
struct mrvl_meshie *ie;
struct lbs_private *priv = netdev_priv(to_net_dev(dev));
int len;
int ret;
if (count < 2 || count > IW_ESSID_MAX_SIZE + 1)
return -EINVAL;
memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
ie = (struct mrvl_meshie *) &cmd.data[0];
/* fetch all other Information Element parameters */
ret = mesh_get_default_parameters(dev, &defs);
cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
/* transfer IE elements */
memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
len = count - 1;
memcpy(ie->val.mesh_id, buf, len);
/* SSID len */
ie->val.mesh_id_len = len;
/* IE len */
ie->len = sizeof(struct mrvl_meshie_val) - IW_ESSID_MAX_SIZE + len;
ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
CMD_TYPE_MESH_SET_MESH_IE);
if (ret)
return ret;
return strlen(buf);
}
/**
* @brief Get function for sysfs attribute protocol_id
*/
static ssize_t protocol_id_get(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mrvl_mesh_defaults defs;
int ret;
ret = mesh_get_default_parameters(dev, &defs);
if (ret)
return ret;
return snprintf(buf, 5, "%d\n", defs.meshie.val.active_protocol_id);
}
/**
* @brief Set function for sysfs attribute protocol_id
*/
static ssize_t protocol_id_set(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct cmd_ds_mesh_config cmd;
struct mrvl_mesh_defaults defs;
struct mrvl_meshie *ie;
struct lbs_private *priv = netdev_priv(to_net_dev(dev));
uint32_t datum;
int ret;
memset(&cmd, 0, sizeof(cmd));
ret = sscanf(buf, "%d", &datum);
if ((ret != 1) || (datum > 255))
return -EINVAL;
/* fetch all other Information Element parameters */
ret = mesh_get_default_parameters(dev, &defs);
cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
/* transfer IE elements */
ie = (struct mrvl_meshie *) &cmd.data[0];
memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
/* update protocol id */
ie->val.active_protocol_id = datum;
ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
CMD_TYPE_MESH_SET_MESH_IE);
if (ret)
return ret;
return strlen(buf);
}
/**
* @brief Get function for sysfs attribute metric_id
*/
static ssize_t metric_id_get(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mrvl_mesh_defaults defs;
int ret;
ret = mesh_get_default_parameters(dev, &defs);
if (ret)
return ret;
return snprintf(buf, 5, "%d\n", defs.meshie.val.active_metric_id);
}
/**
* @brief Set function for sysfs attribute metric_id
*/
static ssize_t metric_id_set(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct cmd_ds_mesh_config cmd;
struct mrvl_mesh_defaults defs;
struct mrvl_meshie *ie;
struct lbs_private *priv = netdev_priv(to_net_dev(dev));
uint32_t datum;
int ret;
memset(&cmd, 0, sizeof(cmd));
ret = sscanf(buf, "%d", &datum);
if ((ret != 1) || (datum > 255))
return -EINVAL;
/* fetch all other Information Element parameters */
ret = mesh_get_default_parameters(dev, &defs);
cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
/* transfer IE elements */
ie = (struct mrvl_meshie *) &cmd.data[0];
memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
/* update metric id */
ie->val.active_metric_id = datum;
ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
CMD_TYPE_MESH_SET_MESH_IE);
if (ret)
return ret;
return strlen(buf);
}
/**
* @brief Get function for sysfs attribute capability
*/
static ssize_t capability_get(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mrvl_mesh_defaults defs;
int ret;
ret = mesh_get_default_parameters(dev, &defs);
if (ret)
return ret;
return snprintf(buf, 5, "%d\n", defs.meshie.val.mesh_capability);
}
/**
* @brief Set function for sysfs attribute capability
*/
static ssize_t capability_set(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct cmd_ds_mesh_config cmd;
struct mrvl_mesh_defaults defs;
struct mrvl_meshie *ie;
struct lbs_private *priv = netdev_priv(to_net_dev(dev));
uint32_t datum;
int ret;
memset(&cmd, 0, sizeof(cmd));
ret = sscanf(buf, "%d", &datum);
if ((ret != 1) || (datum > 255))
return -EINVAL;
/* fetch all other Information Element parameters */
ret = mesh_get_default_parameters(dev, &defs);
cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
/* transfer IE elements */
ie = (struct mrvl_meshie *) &cmd.data[0];
memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
/* update value */
ie->val.mesh_capability = datum;
ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
CMD_TYPE_MESH_SET_MESH_IE);
if (ret)
return ret;
return strlen(buf);
}
static DEVICE_ATTR(bootflag, 0644, bootflag_get, bootflag_set);
static DEVICE_ATTR(boottime, 0644, boottime_get, boottime_set);
static DEVICE_ATTR(channel, 0644, channel_get, channel_set);
static DEVICE_ATTR(mesh_id, 0644, mesh_id_get, mesh_id_set);
static DEVICE_ATTR(protocol_id, 0644, protocol_id_get, protocol_id_set);
static DEVICE_ATTR(metric_id, 0644, metric_id_get, metric_id_set);
static DEVICE_ATTR(capability, 0644, capability_get, capability_set);
static struct attribute *boot_opts_attrs[] = {
&dev_attr_bootflag.attr,
&dev_attr_boottime.attr,
&dev_attr_channel.attr,
NULL
};
static struct attribute_group boot_opts_group = {
.name = "boot_options",
.attrs = boot_opts_attrs,
};
static struct attribute *mesh_ie_attrs[] = {
&dev_attr_mesh_id.attr,
&dev_attr_protocol_id.attr,
&dev_attr_metric_id.attr,
&dev_attr_capability.attr,
NULL
};
static struct attribute_group mesh_ie_group = {
.name = "mesh_ie",
.attrs = mesh_ie_attrs,
};
void lbs_persist_config_init(struct net_device *dev)
{
int ret;
ret = sysfs_create_group(&(dev->dev.kobj), &boot_opts_group);
ret = sysfs_create_group(&(dev->dev.kobj), &mesh_ie_group);
}
void lbs_persist_config_remove(struct net_device *dev)
{
sysfs_remove_group(&(dev->dev.kobj), &boot_opts_group);
sysfs_remove_group(&(dev->dev.kobj), &mesh_ie_group);
}
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