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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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098a607091
The aggregation code has a number of quirks, like inventing an unneeded WLAN_BACK_TIMER value and leaking memory under certain circumstances during station destruction. Fix these issues by using the regular aggregation session teardown code and blocking new aggregation sessions, all before the station is really destructed. As a side effect, this gets rid of the long code block to destroy aggregation safely. Additionally, rename tid_state_rx which can only have the values IDLE and OPERATIONAL to tid_active_rx to make it easier to understand that there is no bitwise stuff going on on the RX side -- the TX side remains because it needs to keep track of the driver and peer states. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
300 lines
9.8 KiB
C
300 lines
9.8 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->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(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%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_STA ? "PS (sta)\n" : "",
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staflags & WLAN_STA_PS_DRIVER ? "PS (driver)\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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staflags & WLAN_STA_MFP ? "MFP\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[71 + STA_TID_NUM * 40], *p = buf;
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int i;
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struct sta_info *sta = file->private_data;
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spin_lock_bh(&sta->lock);
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p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
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sta->ampdu_mlme.dialog_token_allocator + 1);
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p += scnprintf(p, sizeof(buf) + buf - p,
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"TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tSSN\tpending\n");
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for (i = 0; i < STA_TID_NUM; i++) {
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p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
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p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
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sta->ampdu_mlme.tid_active_rx[i]);
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p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
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sta->ampdu_mlme.tid_active_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, "\t%#.3x",
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sta->ampdu_mlme.tid_active_rx[i] ?
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sta->ampdu_mlme.tid_rx[i]->ssn : 0);
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p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
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sta->ampdu_mlme.tid_state_tx[i]);
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p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
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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, "\t%#.3x",
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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, "\t%03d",
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sta->ampdu_mlme.tid_state_tx[i] ?
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skb_queue_len(&sta->ampdu_mlme.tid_tx[i]->pending) : 0);
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p += scnprintf(p, sizeof(buf) + buf - p, "\n");
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}
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spin_unlock_bh(&sta->lock);
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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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static ssize_t sta_ht_capa_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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#define PRINT_HT_CAP(_cond, _str) \
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do { \
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if (_cond) \
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p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
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} while (0)
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char buf[512], *p = buf;
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int i;
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struct sta_info *sta = file->private_data;
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struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
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p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
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htc->ht_supported ? "" : "not ");
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if (htc->ht_supported) {
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p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
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PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDCP");
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PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
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PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
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PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
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PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
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PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
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PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
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PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
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PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
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PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
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PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
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PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
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PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
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PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
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PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
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PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
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"3839 bytes");
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PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
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"7935 bytes");
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/*
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* For beacons and probe response this would mean the BSS
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* does or does not allow the usage of DSSS/CCK HT40.
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* Otherwise it means the STA does or does not use
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* DSSS/CCK HT40.
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*/
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PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
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PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
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/* BIT(13) is reserved */
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PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
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PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
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p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
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htc->ampdu_factor, htc->ampdu_density);
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p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
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for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
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p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
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htc->mcs.rx_mask[i]);
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p += scnprintf(p, sizeof(buf)+buf-p, "\n");
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/* If not set this is meaningless */
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if (le16_to_cpu(htc->mcs.rx_highest)) {
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p += scnprintf(p, sizeof(buf)+buf-p,
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"MCS rx highest: %d Mbps\n",
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le16_to_cpu(htc->mcs.rx_highest));
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}
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p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
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htc->mcs.tx_params);
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}
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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(ht_capa);
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#define DEBUGFS_ADD(name) \
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debugfs_create_file(#name, 0400, \
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sta->debugfs.dir, sta, &sta_ ##name## _ops);
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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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DEBUGFS_ADD(dev);
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DEBUGFS_ADD(rx_packets);
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DEBUGFS_ADD(tx_packets);
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DEBUGFS_ADD(rx_bytes);
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DEBUGFS_ADD(tx_bytes);
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DEBUGFS_ADD(rx_duplicates);
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DEBUGFS_ADD(rx_fragments);
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DEBUGFS_ADD(rx_dropped);
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DEBUGFS_ADD(tx_fragments);
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DEBUGFS_ADD(tx_filtered);
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DEBUGFS_ADD(tx_retry_failed);
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DEBUGFS_ADD(tx_retry_count);
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DEBUGFS_ADD(last_signal);
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DEBUGFS_ADD(wep_weak_iv_count);
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DEBUGFS_ADD(ht_capa);
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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_remove_recursive(sta->debugfs.dir);
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sta->debugfs.dir = NULL;
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}
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