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net/mac80211/debugfs.c
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/* * mac80211 debugfs for wireless PHYs * * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> * * GPLv2 * */ #include <linux/debugfs.h> #include <linux/rtnetlink.h> #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" int mac80211_open_file_generic(struct inode *inode, struct file *file) { file->private_data = inode->i_private; return 0; } |
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#define DEBUGFS_FORMAT_BUFFER_SIZE 100 int mac80211_format_buffer(char __user *userbuf, size_t count, loff_t *ppos, char *fmt, ...) { va_list args; char buf[DEBUGFS_FORMAT_BUFFER_SIZE]; int res; va_start(args, fmt); res = vscnprintf(buf, sizeof(buf), fmt, args); va_end(args); return simple_read_from_buffer(userbuf, count, ppos, buf, res); } |
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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, \ size_t count, loff_t *ppos) \ { \ struct ieee80211_local *local = file->private_data; \ |
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\ |
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return mac80211_format_buffer(userbuf, count, ppos, \ fmt " ", ##value); \ |
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} #define DEBUGFS_READONLY_FILE_OPS(name) \ |
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static const struct file_operations name## _ops = { \ .read = name## _read, \ .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...) \ DEBUGFS_READONLY_FILE_FN(name, fmt, value) \ 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", local->user_power_level); DEBUGFS_READONLY_FILE(power, "%d", 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 reset_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; rtnl_lock(); |
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__ieee80211_suspend(&local->hw, NULL); |
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__ieee80211_resume(&local->hw); rtnl_unlock(); return count; } static const struct file_operations reset_ops = { .write = reset_write, .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, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; |
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return mac80211_format_buffer(user_buf, count, ppos, "%d ", local->wifi_wme_noack_test); |
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} static ssize_t noack_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; char buf[10]; size_t len; len = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, len)) return -EFAULT; buf[len] = '\0'; local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0); return count; } static const struct file_operations noack_ops = { .read = noack_read, .write = noack_write, |
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.open = mac80211_open_file_generic, .llseek = default_llseek, |
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}; |
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static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; |
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return mac80211_format_buffer(user_buf, count, ppos, "0x%x ", local->uapsd_queues); |
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} static ssize_t uapsd_queues_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; |
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u8 val; |
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int ret; |
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ret = kstrtou8_from_user(user_buf, count, 0, &val); |
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if (ret) |
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return ret; |
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if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) return -ERANGE; local->uapsd_queues = val; return count; } static const struct file_operations uapsd_queues_ops = { .read = uapsd_queues_read, .write = uapsd_queues_write, |
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.open = mac80211_open_file_generic, .llseek = default_llseek, |
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}; static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; |
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return mac80211_format_buffer(user_buf, count, ppos, "0x%x ", local->uapsd_max_sp_len); |
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} static ssize_t uapsd_max_sp_len_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; unsigned long val; char buf[10]; size_t len; int ret; len = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, len)) return -EFAULT; buf[len] = '\0'; ret = strict_strtoul(buf, 0, &val); if (ret) return -EINVAL; if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) return -ERANGE; local->uapsd_max_sp_len = val; return count; } static const struct file_operations uapsd_max_sp_len_ops = { .read = uapsd_max_sp_len_read, .write = uapsd_max_sp_len_write, |
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.open = mac80211_open_file_generic, .llseek = default_llseek, |
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}; |
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static ssize_t channel_type_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; const char *buf; switch (local->hw.conf.channel_type) { case NL80211_CHAN_NO_HT: buf = "no ht "; break; case NL80211_CHAN_HT20: buf = "ht20 "; break; case NL80211_CHAN_HT40MINUS: buf = "ht40- "; break; case NL80211_CHAN_HT40PLUS: buf = "ht40+ "; break; default: buf = "???"; break; } return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); } |
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static ssize_t hwflags_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; int mxln = 500; ssize_t rv; char *buf = kzalloc(mxln, GFP_KERNEL); int sf = 0; /* how many written so far */ |
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if (!buf) return 0; |
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sf += snprintf(buf, mxln - sf, "0x%x ", local->hw.flags); if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) sf += snprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL "); if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS) sf += snprintf(buf + sf, mxln - sf, "RX_INCLUDES_FCS "); if (local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING) sf += snprintf(buf + sf, mxln - sf, "HOST_BCAST_PS_BUFFERING "); if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE) sf += snprintf(buf + sf, mxln - sf, "2GHZ_SHORT_SLOT_INCAPABLE "); if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE) sf += snprintf(buf + sf, mxln - sf, "2GHZ_SHORT_PREAMBLE_INCAPABLE "); if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) sf += snprintf(buf + sf, mxln - sf, "SIGNAL_UNSPEC "); if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) sf += snprintf(buf + sf, mxln - sf, "SIGNAL_DBM "); if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) sf += snprintf(buf + sf, mxln - sf, "NEED_DTIM_PERIOD "); if (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT) sf += snprintf(buf + sf, mxln - sf, "SPECTRUM_MGMT "); if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION) sf += snprintf(buf + sf, mxln - sf, "AMPDU_AGGREGATION "); if (local->hw.flags & IEEE80211_HW_SUPPORTS_PS) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PS "); if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) sf += snprintf(buf + sf, mxln - sf, "PS_NULLFUNC_STACK "); if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_PS "); if (local->hw.flags & IEEE80211_HW_MFP_CAPABLE) sf += snprintf(buf + sf, mxln - sf, "MFP_CAPABLE "); if (local->hw.flags & IEEE80211_HW_BEACON_FILTER) sf += snprintf(buf + sf, mxln - sf, "BEACON_FILTER "); if (local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_STATIC_SMPS "); if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_SMPS "); if (local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_UAPSD "); if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) sf += snprintf(buf + sf, mxln - sf, "REPORTS_TX_ACK_STATUS "); if (local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) sf += snprintf(buf + sf, mxln - sf, "CONNECTION_MONITOR "); if (local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_CQM_RSSI "); if (local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK "); if (local->hw.flags & IEEE80211_HW_AP_LINK_PS) sf += snprintf(buf + sf, mxln - sf, "AP_LINK_PS "); |
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if (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW) sf += snprintf(buf + sf, mxln - sf, "TX_AMPDU_SETUP_IN_HW "); |
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rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); kfree(buf); return rv; } |
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static ssize_t queues_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; unsigned long flags; char buf[IEEE80211_MAX_QUEUES * 20]; int q, res = 0; spin_lock_irqsave(&local->queue_stop_reason_lock, flags); for (q = 0; q < local->hw.queues; q++) res += sprintf(buf + res, "%02d: %#.8lx/%d ", q, 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); return simple_read_from_buffer(user_buf, count, ppos, buf, res); } |
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DEBUGFS_READONLY_FILE_OPS(hwflags); DEBUGFS_READONLY_FILE_OPS(channel_type); 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, char __user *userbuf, size_t count, loff_t *ppos, int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, int buflen)) { struct ieee80211_low_level_stats stats; char buf[20]; 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) return res; res = printvalue(&stats, buf, sizeof(buf)); |
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return simple_read_from_buffer(userbuf, count, ppos, buf, res); } #define DEBUGFS_DEVSTATS_FILE(name) \ static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ char *buf, int buflen) \ { \ return scnprintf(buf, buflen, "%u ", stats->name); \ } \ static ssize_t stats_ ##name## _read(struct file *file, \ char __user *userbuf, \ size_t count, loff_t *ppos) \ { \ return format_devstat_counter(file->private_data, \ userbuf, \ count, \ ppos, \ print_devstats_##name); \ } \ \ static const struct file_operations stats_ ##name## _ops = { \ .read = stats_ ##name## _read, \ .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) \ debugfs_create_u32(#name, 0400, statsd, (u32 *) &field); #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); DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); |
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void debugfs_hw_add(struct ieee80211_local *local) { struct dentry *phyd = local->hw.wiphy->debugfsdir; struct dentry *statsd; if (!phyd) 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(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); DEBUGFS_ADD(uapsd_max_sp_len); |
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DEBUGFS_ADD(channel_type); |
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DEBUGFS_ADD(hwflags); |
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DEBUGFS_ADD(user_power); DEBUGFS_ADD(power); |
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statsd = debugfs_create_dir("statistics", phyd); |
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/* if the dir failed, don't put all the other things into the root! */ if (!statsd) return; |
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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); |
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#ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
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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); |
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#endif |
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DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount); DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount); DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount); DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount); |
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} |