218 lines
6.9 KiB
C
218 lines
6.9 KiB
C
/*
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* Copyright 2003-2005 Devicescape Software, Inc.
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* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
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* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/debugfs.h>
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#include <linux/ieee80211.h>
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#include "ieee80211_i.h"
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#include "debugfs.h"
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#include "debugfs_sta.h"
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#include "sta_info.h"
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/* sta attributtes */
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#define STA_READ(name, buflen, field, format_string) \
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static ssize_t sta_ ##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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int res; \
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struct sta_info *sta = file->private_data; \
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char buf[buflen]; \
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res = scnprintf(buf, buflen, format_string, sta->field); \
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return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
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}
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#define STA_READ_D(name, field) STA_READ(name, 20, field, "%d\n")
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#define STA_READ_U(name, field) STA_READ(name, 20, field, "%u\n")
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#define STA_READ_LU(name, field) STA_READ(name, 20, field, "%lu\n")
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#define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n")
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#define STA_OPS(name) \
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static const struct file_operations sta_ ##name## _ops = { \
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.read = sta_##name##_read, \
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.open = mac80211_open_file_generic, \
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}
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#define STA_FILE(name, field, format) \
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STA_READ_##format(name, field) \
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STA_OPS(name)
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STA_FILE(aid, sta.aid, D);
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STA_FILE(dev, sdata->dev->name, S);
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STA_FILE(rx_packets, rx_packets, LU);
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STA_FILE(tx_packets, tx_packets, LU);
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STA_FILE(rx_bytes, rx_bytes, LU);
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STA_FILE(tx_bytes, tx_bytes, LU);
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STA_FILE(rx_duplicates, num_duplicates, LU);
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STA_FILE(rx_fragments, rx_fragments, LU);
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STA_FILE(rx_dropped, rx_dropped, LU);
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STA_FILE(tx_fragments, tx_fragments, LU);
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STA_FILE(tx_filtered, tx_filtered_count, LU);
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STA_FILE(tx_retry_failed, tx_retry_failed, LU);
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STA_FILE(tx_retry_count, tx_retry_count, LU);
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STA_FILE(last_signal, last_signal, D);
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STA_FILE(last_qual, last_qual, D);
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STA_FILE(last_noise, last_noise, D);
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STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU);
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static ssize_t sta_flags_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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char buf[100];
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struct sta_info *sta = file->private_data;
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u32 staflags = get_sta_flags(sta);
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int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s",
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staflags & WLAN_STA_AUTH ? "AUTH\n" : "",
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staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
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staflags & WLAN_STA_PS ? "PS\n" : "",
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staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
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staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
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staflags & WLAN_STA_WME ? "WME\n" : "",
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staflags & WLAN_STA_WDS ? "WDS\n" : "");
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return simple_read_from_buffer(userbuf, count, ppos, buf, res);
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}
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STA_OPS(flags);
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static ssize_t sta_num_ps_buf_frames_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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char buf[20];
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struct sta_info *sta = file->private_data;
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int res = scnprintf(buf, sizeof(buf), "%u\n",
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skb_queue_len(&sta->ps_tx_buf));
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return simple_read_from_buffer(userbuf, count, ppos, buf, res);
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}
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STA_OPS(num_ps_buf_frames);
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static ssize_t sta_inactive_ms_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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char buf[20];
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struct sta_info *sta = file->private_data;
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int res = scnprintf(buf, sizeof(buf), "%d\n",
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jiffies_to_msecs(jiffies - sta->last_rx));
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return simple_read_from_buffer(userbuf, count, ppos, buf, res);
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}
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STA_OPS(inactive_ms);
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static ssize_t sta_last_seq_ctrl_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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char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
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int i;
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struct sta_info *sta = file->private_data;
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for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
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p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
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le16_to_cpu(sta->last_seq_ctrl[i]));
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p += scnprintf(p, sizeof(buf)+buf-p, "\n");
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return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
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}
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STA_OPS(last_seq_ctrl);
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static ssize_t sta_agg_status_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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char buf[768], *p = buf;
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int i;
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struct sta_info *sta = file->private_data;
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p += scnprintf(p, sizeof(buf)+buf-p, "Agg state for STA is:\n");
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p += scnprintf(p, sizeof(buf)+buf-p, " STA next dialog_token is %d \n "
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"TIDs info is: \n TID :",
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(sta->ampdu_mlme.dialog_token_allocator + 1));
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for (i = 0; i < STA_TID_NUM; i++)
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p += scnprintf(p, sizeof(buf)+buf-p, "%5d", i);
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p += scnprintf(p, sizeof(buf)+buf-p, "\n RX :");
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for (i = 0; i < STA_TID_NUM; i++)
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p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
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sta->ampdu_mlme.tid_state_rx[i]);
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p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");
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for (i = 0; i < STA_TID_NUM; i++)
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p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
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sta->ampdu_mlme.tid_state_rx[i] ?
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sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
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p += scnprintf(p, sizeof(buf)+buf-p, "\n TX :");
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for (i = 0; i < STA_TID_NUM; i++)
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p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
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sta->ampdu_mlme.tid_state_tx[i]);
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p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");
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for (i = 0; i < STA_TID_NUM; i++)
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p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
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sta->ampdu_mlme.tid_state_tx[i] ?
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sta->ampdu_mlme.tid_tx[i]->dialog_token : 0);
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p += scnprintf(p, sizeof(buf)+buf-p, "\n SSN :");
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for (i = 0; i < STA_TID_NUM; i++)
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p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
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sta->ampdu_mlme.tid_state_tx[i] ?
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sta->ampdu_mlme.tid_tx[i]->ssn : 0);
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p += scnprintf(p, sizeof(buf)+buf-p, "\n");
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return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
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}
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STA_OPS(agg_status);
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#define DEBUGFS_ADD(name) \
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sta->debugfs.name = debugfs_create_file(#name, 0400, \
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sta->debugfs.dir, sta, &sta_ ##name## _ops);
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#define DEBUGFS_DEL(name) \
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debugfs_remove(sta->debugfs.name);\
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sta->debugfs.name = NULL;
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void ieee80211_sta_debugfs_add(struct sta_info *sta)
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{
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struct dentry *stations_dir = sta->local->debugfs.stations;
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u8 mac[3*ETH_ALEN];
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sta->debugfs.add_has_run = true;
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if (!stations_dir)
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return;
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snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
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/*
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* This might fail due to a race condition:
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* When mac80211 unlinks a station, the debugfs entries
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* remain, but it is already possible to link a new
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* station with the same address which triggers adding
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* it to debugfs; therefore, if the old station isn't
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* destroyed quickly enough the old station's debugfs
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* dir might still be around.
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*/
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sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
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if (!sta->debugfs.dir)
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return;
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DEBUGFS_ADD(flags);
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DEBUGFS_ADD(num_ps_buf_frames);
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DEBUGFS_ADD(inactive_ms);
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DEBUGFS_ADD(last_seq_ctrl);
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DEBUGFS_ADD(agg_status);
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}
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void ieee80211_sta_debugfs_remove(struct sta_info *sta)
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{
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DEBUGFS_DEL(flags);
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DEBUGFS_DEL(num_ps_buf_frames);
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DEBUGFS_DEL(inactive_ms);
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DEBUGFS_DEL(last_seq_ctrl);
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DEBUGFS_DEL(agg_status);
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debugfs_remove(sta->debugfs.dir);
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sta->debugfs.dir = NULL;
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}
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