527 строки
15 KiB
C
527 строки
15 KiB
C
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/*
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* mac80211 debugfs for wireless PHYs
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*
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* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
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*
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* GPLv2
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*
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*/
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#include <linux/debugfs.h>
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#include <linux/rtnetlink.h>
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#include "ieee80211_i.h"
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#include "driver-ops.h"
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#include "rate.h"
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#include "debugfs.h"
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int mac80211_open_file_generic(struct inode *inode, struct file *file)
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{
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file->private_data = inode->i_private;
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return 0;
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}
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#define DEBUGFS_FORMAT_BUFFER_SIZE 100
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int mac80211_format_buffer(char __user *userbuf, size_t count,
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loff_t *ppos, char *fmt, ...)
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{
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va_list args;
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char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
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int res;
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va_start(args, fmt);
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res = vscnprintf(buf, sizeof(buf), fmt, args);
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va_end(args);
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return simple_read_from_buffer(userbuf, count, ppos, buf, res);
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}
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#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \
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static ssize_t name## _read(struct file *file, char __user *userbuf, \
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size_t count, loff_t *ppos) \
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{ \
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struct ieee80211_local *local = file->private_data; \
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\
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return mac80211_format_buffer(userbuf, count, ppos, \
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fmt "\n", ##value); \
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}
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#define DEBUGFS_READONLY_FILE_OPS(name) \
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static const struct file_operations name## _ops = { \
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.read = name## _read, \
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.open = mac80211_open_file_generic, \
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.llseek = generic_file_llseek, \
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};
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#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
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DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
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DEBUGFS_READONLY_FILE_OPS(name)
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#define DEBUGFS_ADD(name) \
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debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
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#define DEBUGFS_ADD_MODE(name, mode) \
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debugfs_create_file(#name, mode, phyd, local, &name## _ops);
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DEBUGFS_READONLY_FILE(user_power, "%d",
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local->user_power_level);
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DEBUGFS_READONLY_FILE(power, "%d",
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local->hw.conf.power_level);
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DEBUGFS_READONLY_FILE(frequency, "%d",
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local->hw.conf.channel->center_freq);
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DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
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local->total_ps_buffered);
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DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
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local->wep_iv & 0xffffff);
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DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
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local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
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static ssize_t tsf_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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u64 tsf;
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tsf = drv_get_tsf(local);
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return mac80211_format_buffer(user_buf, count, ppos, "0x%016llx\n",
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(unsigned long long) tsf);
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}
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static ssize_t tsf_write(struct file *file,
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const char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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unsigned long long tsf;
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char buf[100];
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size_t len;
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len = min(count, sizeof(buf) - 1);
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if (copy_from_user(buf, user_buf, len))
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return -EFAULT;
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buf[len] = '\0';
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if (strncmp(buf, "reset", 5) == 0) {
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if (local->ops->reset_tsf) {
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drv_reset_tsf(local);
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wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
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}
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} else {
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tsf = simple_strtoul(buf, NULL, 0);
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if (local->ops->set_tsf) {
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drv_set_tsf(local, tsf);
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wiphy_info(local->hw.wiphy,
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"debugfs set TSF to %#018llx\n", tsf);
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}
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}
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return count;
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}
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static const struct file_operations tsf_ops = {
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.read = tsf_read,
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.write = tsf_write,
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.open = mac80211_open_file_generic,
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.llseek = default_llseek,
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};
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static ssize_t reset_write(struct file *file, const char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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rtnl_lock();
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__ieee80211_suspend(&local->hw, NULL);
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__ieee80211_resume(&local->hw);
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rtnl_unlock();
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return count;
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}
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static const struct file_operations reset_ops = {
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.write = reset_write,
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.open = mac80211_open_file_generic,
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.llseek = noop_llseek,
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};
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static ssize_t noack_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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return mac80211_format_buffer(user_buf, count, ppos, "%d\n",
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local->wifi_wme_noack_test);
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}
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static ssize_t noack_write(struct file *file,
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const char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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char buf[10];
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size_t len;
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len = min(count, sizeof(buf) - 1);
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if (copy_from_user(buf, user_buf, len))
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return -EFAULT;
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buf[len] = '\0';
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local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0);
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return count;
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}
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static const struct file_operations noack_ops = {
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.read = noack_read,
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.write = noack_write,
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.open = mac80211_open_file_generic,
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.llseek = default_llseek,
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};
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static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
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local->uapsd_queues);
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}
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static ssize_t uapsd_queues_write(struct file *file,
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const char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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unsigned long val;
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char buf[10];
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size_t len;
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int ret;
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len = min(count, sizeof(buf) - 1);
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if (copy_from_user(buf, user_buf, len))
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return -EFAULT;
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buf[len] = '\0';
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ret = strict_strtoul(buf, 0, &val);
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if (ret)
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return -EINVAL;
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if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
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return -ERANGE;
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local->uapsd_queues = val;
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return count;
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}
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static const struct file_operations uapsd_queues_ops = {
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.read = uapsd_queues_read,
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.write = uapsd_queues_write,
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.open = mac80211_open_file_generic,
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.llseek = default_llseek,
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};
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static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
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local->uapsd_max_sp_len);
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}
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static ssize_t uapsd_max_sp_len_write(struct file *file,
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const char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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unsigned long val;
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char buf[10];
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size_t len;
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int ret;
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len = min(count, sizeof(buf) - 1);
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if (copy_from_user(buf, user_buf, len))
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return -EFAULT;
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buf[len] = '\0';
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ret = strict_strtoul(buf, 0, &val);
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if (ret)
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return -EINVAL;
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if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
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return -ERANGE;
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local->uapsd_max_sp_len = val;
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return count;
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}
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static const struct file_operations uapsd_max_sp_len_ops = {
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.read = uapsd_max_sp_len_read,
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.write = uapsd_max_sp_len_write,
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.open = mac80211_open_file_generic,
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.llseek = default_llseek,
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};
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static ssize_t channel_type_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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const char *buf;
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switch (local->hw.conf.channel_type) {
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case NL80211_CHAN_NO_HT:
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buf = "no ht\n";
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break;
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case NL80211_CHAN_HT20:
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buf = "ht20\n";
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break;
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case NL80211_CHAN_HT40MINUS:
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buf = "ht40-\n";
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break;
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case NL80211_CHAN_HT40PLUS:
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buf = "ht40+\n";
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break;
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default:
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buf = "???";
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break;
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}
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return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
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}
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static ssize_t hwflags_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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int mxln = 500;
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ssize_t rv;
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char *buf = kzalloc(mxln, GFP_KERNEL);
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int sf = 0; /* how many written so far */
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sf += snprintf(buf, mxln - sf, "0x%x\n", local->hw.flags);
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if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
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sf += snprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL\n");
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if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
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sf += snprintf(buf + sf, mxln - sf, "RX_INCLUDES_FCS\n");
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if (local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING)
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sf += snprintf(buf + sf, mxln - sf,
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"HOST_BCAST_PS_BUFFERING\n");
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if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)
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sf += snprintf(buf + sf, mxln - sf,
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"2GHZ_SHORT_SLOT_INCAPABLE\n");
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if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)
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sf += snprintf(buf + sf, mxln - sf,
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"2GHZ_SHORT_PREAMBLE_INCAPABLE\n");
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if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
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sf += snprintf(buf + sf, mxln - sf, "SIGNAL_UNSPEC\n");
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if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
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sf += snprintf(buf + sf, mxln - sf, "SIGNAL_DBM\n");
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if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD)
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sf += snprintf(buf + sf, mxln - sf, "NEED_DTIM_PERIOD\n");
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if (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)
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sf += snprintf(buf + sf, mxln - sf, "SPECTRUM_MGMT\n");
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if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)
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sf += snprintf(buf + sf, mxln - sf, "AMPDU_AGGREGATION\n");
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if (local->hw.flags & IEEE80211_HW_SUPPORTS_PS)
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sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PS\n");
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if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
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sf += snprintf(buf + sf, mxln - sf, "PS_NULLFUNC_STACK\n");
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if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
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sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_PS\n");
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if (local->hw.flags & IEEE80211_HW_MFP_CAPABLE)
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sf += snprintf(buf + sf, mxln - sf, "MFP_CAPABLE\n");
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if (local->hw.flags & IEEE80211_HW_BEACON_FILTER)
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sf += snprintf(buf + sf, mxln - sf, "BEACON_FILTER\n");
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if (local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS)
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sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_STATIC_SMPS\n");
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if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
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sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_SMPS\n");
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if (local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
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sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_UAPSD\n");
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if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
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sf += snprintf(buf + sf, mxln - sf, "REPORTS_TX_ACK_STATUS\n");
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if (local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
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sf += snprintf(buf + sf, mxln - sf, "CONNECTION_MONITOR\n");
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if (local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)
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sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_CQM_RSSI\n");
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if (local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK)
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sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK\n");
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if (local->hw.flags & IEEE80211_HW_AP_LINK_PS)
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sf += snprintf(buf + sf, mxln - sf, "AP_LINK_PS\n");
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rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
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kfree(buf);
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return rv;
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}
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static ssize_t queues_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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unsigned long flags;
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char buf[IEEE80211_MAX_QUEUES * 20];
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int q, res = 0;
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spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
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for (q = 0; q < local->hw.queues; q++)
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res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
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local->queue_stop_reasons[q],
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skb_queue_len(&local->pending[q]));
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spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
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return simple_read_from_buffer(user_buf, count, ppos, buf, res);
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}
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DEBUGFS_READONLY_FILE_OPS(hwflags);
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DEBUGFS_READONLY_FILE_OPS(channel_type);
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DEBUGFS_READONLY_FILE_OPS(queues);
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/* statistics stuff */
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static ssize_t format_devstat_counter(struct ieee80211_local *local,
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char __user *userbuf,
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size_t count, loff_t *ppos,
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int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
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int buflen))
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{
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struct ieee80211_low_level_stats stats;
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char buf[20];
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int res;
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rtnl_lock();
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res = drv_get_stats(local, &stats);
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rtnl_unlock();
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if (res)
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return res;
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res = printvalue(&stats, buf, sizeof(buf));
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return simple_read_from_buffer(userbuf, count, ppos, buf, res);
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}
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#define DEBUGFS_DEVSTATS_FILE(name) \
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static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
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char *buf, int buflen) \
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{ \
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return scnprintf(buf, buflen, "%u\n", stats->name); \
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} \
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static ssize_t stats_ ##name## _read(struct file *file, \
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char __user *userbuf, \
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size_t count, loff_t *ppos) \
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{ \
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return format_devstat_counter(file->private_data, \
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userbuf, \
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count, \
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ppos, \
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print_devstats_##name); \
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} \
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\
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static const struct file_operations stats_ ##name## _ops = { \
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.read = stats_ ##name## _read, \
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.open = mac80211_open_file_generic, \
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.llseek = generic_file_llseek, \
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};
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#define DEBUGFS_STATS_ADD(name, field) \
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debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
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#define DEBUGFS_DEVSTATS_ADD(name) \
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debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
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DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
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DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
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DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
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DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
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void debugfs_hw_add(struct ieee80211_local *local)
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{
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struct dentry *phyd = local->hw.wiphy->debugfsdir;
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struct dentry *statsd;
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if (!phyd)
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return;
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local->debugfs.keys = debugfs_create_dir("keys", phyd);
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DEBUGFS_ADD(frequency);
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DEBUGFS_ADD(total_ps_buffered);
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DEBUGFS_ADD(wep_iv);
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DEBUGFS_ADD(tsf);
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DEBUGFS_ADD(queues);
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DEBUGFS_ADD_MODE(reset, 0200);
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DEBUGFS_ADD(noack);
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DEBUGFS_ADD(uapsd_queues);
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DEBUGFS_ADD(uapsd_max_sp_len);
|
|
DEBUGFS_ADD(channel_type);
|
|
DEBUGFS_ADD(hwflags);
|
|
DEBUGFS_ADD(user_power);
|
|
DEBUGFS_ADD(power);
|
|
|
|
statsd = debugfs_create_dir("statistics", phyd);
|
|
|
|
/* if the dir failed, don't put all the other things into the root! */
|
|
if (!statsd)
|
|
return;
|
|
|
|
DEBUGFS_STATS_ADD(transmitted_fragment_count,
|
|
local->dot11TransmittedFragmentCount);
|
|
DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
|
|
local->dot11MulticastTransmittedFrameCount);
|
|
DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
|
|
DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
|
|
DEBUGFS_STATS_ADD(multiple_retry_count,
|
|
local->dot11MultipleRetryCount);
|
|
DEBUGFS_STATS_ADD(frame_duplicate_count,
|
|
local->dot11FrameDuplicateCount);
|
|
DEBUGFS_STATS_ADD(received_fragment_count,
|
|
local->dot11ReceivedFragmentCount);
|
|
DEBUGFS_STATS_ADD(multicast_received_frame_count,
|
|
local->dot11MulticastReceivedFrameCount);
|
|
DEBUGFS_STATS_ADD(transmitted_frame_count,
|
|
local->dot11TransmittedFrameCount);
|
|
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
|
|
DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
|
|
DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
|
|
DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
|
|
local->tx_handlers_drop_unencrypted);
|
|
DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
|
|
local->tx_handlers_drop_fragment);
|
|
DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
|
|
local->tx_handlers_drop_wep);
|
|
DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
|
|
local->tx_handlers_drop_not_assoc);
|
|
DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
|
|
local->tx_handlers_drop_unauth_port);
|
|
DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
|
|
DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
|
|
DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
|
|
local->rx_handlers_drop_nullfunc);
|
|
DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
|
|
local->rx_handlers_drop_defrag);
|
|
DEBUGFS_STATS_ADD(rx_handlers_drop_short,
|
|
local->rx_handlers_drop_short);
|
|
DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan,
|
|
local->rx_handlers_drop_passive_scan);
|
|
DEBUGFS_STATS_ADD(tx_expand_skb_head,
|
|
local->tx_expand_skb_head);
|
|
DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
|
|
local->tx_expand_skb_head_cloned);
|
|
DEBUGFS_STATS_ADD(rx_expand_skb_head,
|
|
local->rx_expand_skb_head);
|
|
DEBUGFS_STATS_ADD(rx_expand_skb_head2,
|
|
local->rx_expand_skb_head2);
|
|
DEBUGFS_STATS_ADD(rx_handlers_fragments,
|
|
local->rx_handlers_fragments);
|
|
DEBUGFS_STATS_ADD(tx_status_drop,
|
|
local->tx_status_drop);
|
|
#endif
|
|
DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
|
|
DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
|
|
DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
|
|
DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
|
|
}
|