![Marco Porsch](/assets/img/avatar_default.png)
Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
437 lines
13 KiB
C
437 lines
13 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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#include "driver-ops.h"
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/* sta attributtes */
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#define STA_READ(name, 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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struct sta_info *sta = file->private_data; \
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return mac80211_format_buffer(userbuf, count, ppos, \
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format_string, sta->field); \
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}
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#define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
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#define STA_READ_U(name, field) STA_READ(name, field, "%u\n")
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#define STA_READ_S(name, field) STA_READ(name, 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 = simple_open, \
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.llseek = generic_file_llseek, \
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}
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#define STA_OPS_RW(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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.write = sta_##name##_write, \
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.open = simple_open, \
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.llseek = generic_file_llseek, \
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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(last_signal, last_signal, D);
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STA_FILE(last_ack_signal, last_ack_signal, D);
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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[121];
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struct sta_info *sta = file->private_data;
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#define TEST(flg) \
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test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
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int res = scnprintf(buf, sizeof(buf),
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"%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
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TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
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TEST(PS_DRIVER), TEST(AUTHORIZED),
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TEST(SHORT_PREAMBLE),
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TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
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TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
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TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
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TEST(TDLS_PEER_AUTH), TEST(4ADDR_EVENT),
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TEST(INSERTED), TEST(RATE_CONTROL),
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TEST(TOFFSET_KNOWN), TEST(MPSP_OWNER),
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TEST(MPSP_RECIPIENT));
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#undef TEST
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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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struct sta_info *sta = file->private_data;
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char buf[17*IEEE80211_NUM_ACS], *p = buf;
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int ac;
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for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
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p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
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skb_queue_len(&sta->ps_tx_buf[ac]) +
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skb_queue_len(&sta->tx_filtered[ac]));
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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(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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struct sta_info *sta = file->private_data;
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return mac80211_format_buffer(userbuf, count, ppos, "%d\n",
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jiffies_to_msecs(jiffies - sta->last_rx));
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}
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STA_OPS(inactive_ms);
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static ssize_t sta_connected_time_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 sta_info *sta = file->private_data;
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struct timespec uptime;
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struct tm result;
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long connected_time_secs;
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char buf[100];
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int res;
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do_posix_clock_monotonic_gettime(&uptime);
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connected_time_secs = uptime.tv_sec - sta->last_connected;
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time_to_tm(connected_time_secs, 0, &result);
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result.tm_year -= 70;
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result.tm_mday -= 1;
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res = scnprintf(buf, sizeof(buf),
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"years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
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result.tm_year, result.tm_mon, result.tm_mday,
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result.tm_hour, result.tm_min, result.tm_sec);
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return simple_read_from_buffer(userbuf, count, ppos, buf, res);
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}
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STA_OPS(connected_time);
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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*IEEE80211_NUM_TIDS], *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 < IEEE80211_NUM_TIDS; 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 + IEEE80211_NUM_TIDS * 40], *p = buf;
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int i;
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struct sta_info *sta = file->private_data;
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struct tid_ampdu_rx *tid_rx;
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struct tid_ampdu_tx *tid_tx;
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rcu_read_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\tpending\n");
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for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
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tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
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tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[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", !!tid_rx);
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p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
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tid_rx ? tid_rx->dialog_token : 0);
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p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
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tid_rx ? tid_rx->ssn : 0);
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p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
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p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
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tid_tx ? tid_tx->dialog_token : 0);
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p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
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tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
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p += scnprintf(p, sizeof(buf) + buf - p, "\n");
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}
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rcu_read_unlock();
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return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
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}
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static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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char _buf[12], *buf = _buf;
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struct sta_info *sta = file->private_data;
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bool start, tx;
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unsigned long tid;
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int ret;
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if (count > sizeof(_buf))
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return -EINVAL;
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if (copy_from_user(buf, userbuf, count))
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return -EFAULT;
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buf[sizeof(_buf) - 1] = '\0';
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if (strncmp(buf, "tx ", 3) == 0) {
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buf += 3;
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tx = true;
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} else if (strncmp(buf, "rx ", 3) == 0) {
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buf += 3;
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tx = false;
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} else
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return -EINVAL;
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if (strncmp(buf, "start ", 6) == 0) {
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buf += 6;
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start = true;
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if (!tx)
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return -EINVAL;
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} else if (strncmp(buf, "stop ", 5) == 0) {
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buf += 5;
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start = false;
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} else
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return -EINVAL;
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ret = kstrtoul(buf, 0, &tid);
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if (ret)
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return ret;
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if (tid >= IEEE80211_NUM_TIDS)
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return -EINVAL;
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if (tx) {
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if (start)
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ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
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else
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ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
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} else {
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__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
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3, true);
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ret = 0;
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}
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return ret ?: count;
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}
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STA_OPS_RW(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 LDPC");
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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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static ssize_t sta_current_tx_rate_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 sta_info *sta = file->private_data;
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struct rate_info rinfo;
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u16 rate;
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sta_set_rate_info_tx(sta, &sta->last_tx_rate, &rinfo);
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rate = cfg80211_calculate_bitrate(&rinfo);
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return mac80211_format_buffer(userbuf, count, ppos,
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"%d.%d MBit/s\n",
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rate/10, rate%10);
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}
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STA_OPS(current_tx_rate);
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static ssize_t sta_last_rx_rate_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 sta_info *sta = file->private_data;
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struct rate_info rinfo;
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u16 rate;
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sta_set_rate_info_rx(sta, &rinfo);
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rate = cfg80211_calculate_bitrate(&rinfo);
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return mac80211_format_buffer(userbuf, count, ppos,
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"%d.%d MBit/s\n",
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rate/10, rate%10);
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}
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STA_OPS(last_rx_rate);
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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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#define DEBUGFS_ADD_COUNTER(name, field) \
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if (sizeof(sta->field) == sizeof(u32)) \
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debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
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(u32 *) &sta->field); \
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else \
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debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
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(u64 *) &sta->field);
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void ieee80211_sta_debugfs_add(struct sta_info *sta)
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{
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struct ieee80211_local *local = sta->local;
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struct ieee80211_sub_if_data *sdata = sta->sdata;
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struct dentry *stations_dir = sta->sdata->debugfs.subdir_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(connected_time);
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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(last_signal);
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DEBUGFS_ADD(ht_capa);
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|
DEBUGFS_ADD(last_ack_signal);
|
|
DEBUGFS_ADD(current_tx_rate);
|
|
DEBUGFS_ADD(last_rx_rate);
|
|
|
|
DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
|
|
DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
|
|
DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
|
|
DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
|
|
DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
|
|
DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
|
|
DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
|
|
DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
|
|
DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
|
|
DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
|
|
DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
|
|
DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
|
|
|
|
drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
|
|
}
|
|
|
|
void ieee80211_sta_debugfs_remove(struct sta_info *sta)
|
|
{
|
|
struct ieee80211_local *local = sta->local;
|
|
struct ieee80211_sub_if_data *sdata = sta->sdata;
|
|
|
|
drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
|
|
debugfs_remove_recursive(sta->debugfs.dir);
|
|
sta->debugfs.dir = NULL;
|
|
}
|