diff options
Diffstat (limited to 'package/kernel/mac80211/patches/subsys/339-mac80211-remove-legacy-minstrel-rate-control.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/subsys/339-mac80211-remove-legacy-minstrel-rate-control.patch | 1328 |
1 files changed, 0 insertions, 1328 deletions
diff --git a/package/kernel/mac80211/patches/subsys/339-mac80211-remove-legacy-minstrel-rate-control.patch b/package/kernel/mac80211/patches/subsys/339-mac80211-remove-legacy-minstrel-rate-control.patch deleted file mode 100644 index 1cab2eb194..0000000000 --- a/package/kernel/mac80211/patches/subsys/339-mac80211-remove-legacy-minstrel-rate-control.patch +++ /dev/null @@ -1,1328 +0,0 @@ -From: Felix Fietkau <nbd@nbd.name> -Date: Sat, 26 Dec 2020 14:23:47 +0100 -Subject: [PATCH] mac80211: remove legacy minstrel rate control - -Now that minstrel_ht supports legacy rates, it is no longer needed - -Signed-off-by: Felix Fietkau <nbd@nbd.name> ---- - delete mode 100644 net/mac80211/rc80211_minstrel.c - delete mode 100644 net/mac80211/rc80211_minstrel.h - delete mode 100644 net/mac80211/rc80211_minstrel_debugfs.c - ---- a/net/mac80211/Makefile -+++ b/net/mac80211/Makefile -@@ -56,11 +56,9 @@ mac80211-$(CONFIG_PM) += pm.o - CFLAGS_trace.o := -I$(src) - - rc80211_minstrel-y := \ -- rc80211_minstrel.o \ - rc80211_minstrel_ht.o - - rc80211_minstrel-$(CPTCFG_MAC80211_DEBUGFS) += \ -- rc80211_minstrel_debugfs.o \ - rc80211_minstrel_ht_debugfs.o - - mac80211-$(CPTCFG_MAC80211_RC_MINSTREL) += $(rc80211_minstrel-y) ---- a/net/mac80211/rc80211_minstrel.c -+++ /dev/null -@@ -1,574 +0,0 @@ --/* -- * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org> -- * -- * This program is free software; you can redistribute it and/or modify -- * it under the terms of the GNU General Public License version 2 as -- * published by the Free Software Foundation. -- * -- * Based on minstrel.c: -- * Copyright (C) 2005-2007 Derek Smithies <derek@indranet.co.nz> -- * Sponsored by Indranet Technologies Ltd -- * -- * Based on sample.c: -- * Copyright (c) 2005 John Bicket -- * All rights reserved. -- * -- * Redistribution and use in source and binary forms, with or without -- * modification, are permitted provided that the following conditions -- * are met: -- * 1. Redistributions of source code must retain the above copyright -- * notice, this list of conditions and the following disclaimer, -- * without modification. -- * 2. Redistributions in binary form must reproduce at minimum a disclaimer -- * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any -- * redistribution must be conditioned upon including a substantially -- * similar Disclaimer requirement for further binary redistribution. -- * 3. Neither the names of the above-listed copyright holders nor the names -- * of any contributors may be used to endorse or promote products derived -- * from this software without specific prior written permission. -- * -- * Alternatively, this software may be distributed under the terms of the -- * GNU General Public License ("GPL") version 2 as published by the Free -- * Software Foundation. -- * -- * NO WARRANTY -- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -- * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY -- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL -- * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, -- * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER -- * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF -- * THE POSSIBILITY OF SUCH DAMAGES. -- */ --#include <linux/netdevice.h> --#include <linux/types.h> --#include <linux/skbuff.h> --#include <linux/debugfs.h> --#include <linux/random.h> --#include <linux/ieee80211.h> --#include <linux/slab.h> --#include <net/mac80211.h> --#include "rate.h" --#include "rc80211_minstrel.h" -- --#define SAMPLE_TBL(_mi, _idx, _col) \ -- _mi->sample_table[(_idx * SAMPLE_COLUMNS) + _col] -- --/* convert mac80211 rate index to local array index */ --static inline int --rix_to_ndx(struct minstrel_sta_info *mi, int rix) --{ -- int i = rix; -- for (i = rix; i >= 0; i--) -- if (mi->r[i].rix == rix) -- break; -- return i; --} -- --/* return current EMWA throughput */ --int minstrel_get_tp_avg(struct minstrel_rate *mr, int prob_avg) --{ -- int usecs; -- -- usecs = mr->perfect_tx_time; -- if (!usecs) -- usecs = 1000000; -- -- /* reset thr. below 10% success */ -- if (mr->stats.prob_avg < MINSTREL_FRAC(10, 100)) -- return 0; -- -- if (prob_avg > MINSTREL_FRAC(90, 100)) -- return MINSTREL_TRUNC(100000 * (MINSTREL_FRAC(90, 100) / usecs)); -- else -- return MINSTREL_TRUNC(100000 * (prob_avg / usecs)); --} -- --/* find & sort topmost throughput rates */ --static inline void --minstrel_sort_best_tp_rates(struct minstrel_sta_info *mi, int i, u8 *tp_list) --{ -- int j; -- struct minstrel_rate_stats *tmp_mrs; -- struct minstrel_rate_stats *cur_mrs = &mi->r[i].stats; -- -- for (j = MAX_THR_RATES; j > 0; --j) { -- tmp_mrs = &mi->r[tp_list[j - 1]].stats; -- if (minstrel_get_tp_avg(&mi->r[i], cur_mrs->prob_avg) <= -- minstrel_get_tp_avg(&mi->r[tp_list[j - 1]], tmp_mrs->prob_avg)) -- break; -- } -- -- if (j < MAX_THR_RATES - 1) -- memmove(&tp_list[j + 1], &tp_list[j], MAX_THR_RATES - (j + 1)); -- if (j < MAX_THR_RATES) -- tp_list[j] = i; --} -- --static void --minstrel_set_rate(struct minstrel_sta_info *mi, struct ieee80211_sta_rates *ratetbl, -- int offset, int idx) --{ -- struct minstrel_rate *r = &mi->r[idx]; -- -- ratetbl->rate[offset].idx = r->rix; -- ratetbl->rate[offset].count = r->adjusted_retry_count; -- ratetbl->rate[offset].count_cts = r->retry_count_cts; -- ratetbl->rate[offset].count_rts = r->stats.retry_count_rtscts; --} -- --static void --minstrel_update_rates(struct minstrel_priv *mp, struct minstrel_sta_info *mi) --{ -- struct ieee80211_sta_rates *ratetbl; -- int i = 0; -- -- ratetbl = kzalloc(sizeof(*ratetbl), GFP_ATOMIC); -- if (!ratetbl) -- return; -- -- /* Start with max_tp_rate */ -- minstrel_set_rate(mi, ratetbl, i++, mi->max_tp_rate[0]); -- -- if (mp->hw->max_rates >= 3) { -- /* At least 3 tx rates supported, use max_tp_rate2 next */ -- minstrel_set_rate(mi, ratetbl, i++, mi->max_tp_rate[1]); -- } -- -- if (mp->hw->max_rates >= 2) { -- /* At least 2 tx rates supported, use max_prob_rate next */ -- minstrel_set_rate(mi, ratetbl, i++, mi->max_prob_rate); -- } -- -- /* Use lowest rate last */ -- ratetbl->rate[i].idx = mi->lowest_rix; -- ratetbl->rate[i].count = mp->max_retry; -- ratetbl->rate[i].count_cts = mp->max_retry; -- ratetbl->rate[i].count_rts = mp->max_retry; -- -- rate_control_set_rates(mp->hw, mi->sta, ratetbl); --} -- --/* --* Recalculate statistics and counters of a given rate --*/ --void --minstrel_calc_rate_stats(struct minstrel_priv *mp, -- struct minstrel_rate_stats *mrs) --{ -- unsigned int cur_prob; -- -- if (unlikely(mrs->attempts > 0)) { -- mrs->sample_skipped = 0; -- cur_prob = MINSTREL_FRAC(mrs->success, mrs->attempts); -- if (mp->new_avg) { -- minstrel_filter_avg_add(&mrs->prob_avg, -- &mrs->prob_avg_1, cur_prob); -- } else if (unlikely(!mrs->att_hist)) { -- mrs->prob_avg = cur_prob; -- } else { -- /*update exponential weighted moving avarage */ -- mrs->prob_avg = minstrel_ewma(mrs->prob_avg, -- cur_prob, -- EWMA_LEVEL); -- } -- mrs->att_hist += mrs->attempts; -- mrs->succ_hist += mrs->success; -- } else { -- mrs->sample_skipped++; -- } -- -- mrs->last_success = mrs->success; -- mrs->last_attempts = mrs->attempts; -- mrs->success = 0; -- mrs->attempts = 0; --} -- --static void --minstrel_update_stats(struct minstrel_priv *mp, struct minstrel_sta_info *mi) --{ -- u8 tmp_tp_rate[MAX_THR_RATES]; -- u8 tmp_prob_rate = 0; -- int i, tmp_cur_tp, tmp_prob_tp; -- -- for (i = 0; i < MAX_THR_RATES; i++) -- tmp_tp_rate[i] = 0; -- -- for (i = 0; i < mi->n_rates; i++) { -- struct minstrel_rate *mr = &mi->r[i]; -- struct minstrel_rate_stats *mrs = &mi->r[i].stats; -- struct minstrel_rate_stats *tmp_mrs = &mi->r[tmp_prob_rate].stats; -- -- /* Update statistics of success probability per rate */ -- minstrel_calc_rate_stats(mp, mrs); -- -- /* Sample less often below the 10% chance of success. -- * Sample less often above the 95% chance of success. */ -- if (mrs->prob_avg > MINSTREL_FRAC(95, 100) || -- mrs->prob_avg < MINSTREL_FRAC(10, 100)) { -- mr->adjusted_retry_count = mrs->retry_count >> 1; -- if (mr->adjusted_retry_count > 2) -- mr->adjusted_retry_count = 2; -- mr->sample_limit = 4; -- } else { -- mr->sample_limit = -1; -- mr->adjusted_retry_count = mrs->retry_count; -- } -- if (!mr->adjusted_retry_count) -- mr->adjusted_retry_count = 2; -- -- minstrel_sort_best_tp_rates(mi, i, tmp_tp_rate); -- -- /* To determine the most robust rate (max_prob_rate) used at -- * 3rd mmr stage we distinct between two cases: -- * (1) if any success probabilitiy >= 95%, out of those rates -- * choose the maximum throughput rate as max_prob_rate -- * (2) if all success probabilities < 95%, the rate with -- * highest success probability is chosen as max_prob_rate */ -- if (mrs->prob_avg >= MINSTREL_FRAC(95, 100)) { -- tmp_cur_tp = minstrel_get_tp_avg(mr, mrs->prob_avg); -- tmp_prob_tp = minstrel_get_tp_avg(&mi->r[tmp_prob_rate], -- tmp_mrs->prob_avg); -- if (tmp_cur_tp >= tmp_prob_tp) -- tmp_prob_rate = i; -- } else { -- if (mrs->prob_avg >= tmp_mrs->prob_avg) -- tmp_prob_rate = i; -- } -- } -- -- /* Assign the new rate set */ -- memcpy(mi->max_tp_rate, tmp_tp_rate, sizeof(mi->max_tp_rate)); -- mi->max_prob_rate = tmp_prob_rate; -- --#ifdef CPTCFG_MAC80211_DEBUGFS -- /* use fixed index if set */ -- if (mp->fixed_rate_idx != -1) { -- mi->max_tp_rate[0] = mp->fixed_rate_idx; -- mi->max_tp_rate[1] = mp->fixed_rate_idx; -- mi->max_prob_rate = mp->fixed_rate_idx; -- } --#endif -- -- /* Reset update timer */ -- mi->last_stats_update = jiffies; -- -- minstrel_update_rates(mp, mi); --} -- --static void --minstrel_tx_status(void *priv, struct ieee80211_supported_band *sband, -- void *priv_sta, struct ieee80211_tx_status *st) --{ -- struct ieee80211_tx_info *info = st->info; -- struct minstrel_priv *mp = priv; -- struct minstrel_sta_info *mi = priv_sta; -- struct ieee80211_tx_rate *ar = info->status.rates; -- int i, ndx; -- int success; -- -- success = !!(info->flags & IEEE80211_TX_STAT_ACK); -- -- for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { -- if (ar[i].idx < 0 || !ar[i].count) -- break; -- -- ndx = rix_to_ndx(mi, ar[i].idx); -- if (ndx < 0) -- continue; -- -- mi->r[ndx].stats.attempts += ar[i].count; -- -- if ((i != IEEE80211_TX_MAX_RATES - 1) && (ar[i + 1].idx < 0)) -- mi->r[ndx].stats.success += success; -- } -- -- if (time_after(jiffies, mi->last_stats_update + -- mp->update_interval / (mp->new_avg ? 2 : 1))) -- minstrel_update_stats(mp, mi); --} -- -- --static inline unsigned int --minstrel_get_retry_count(struct minstrel_rate *mr, -- struct ieee80211_tx_info *info) --{ -- u8 retry = mr->adjusted_retry_count; -- -- if (info->control.use_rts) -- retry = max_t(u8, 2, min(mr->stats.retry_count_rtscts, retry)); -- else if (info->control.use_cts_prot) -- retry = max_t(u8, 2, min(mr->retry_count_cts, retry)); -- return retry; --} -- -- --static int --minstrel_get_next_sample(struct minstrel_sta_info *mi) --{ -- unsigned int sample_ndx; -- sample_ndx = SAMPLE_TBL(mi, mi->sample_row, mi->sample_column); -- mi->sample_row++; -- if ((int) mi->sample_row >= mi->n_rates) { -- mi->sample_row = 0; -- mi->sample_column++; -- if (mi->sample_column >= SAMPLE_COLUMNS) -- mi->sample_column = 0; -- } -- return sample_ndx; --} -- --static void --minstrel_get_rate(void *priv, struct ieee80211_sta *sta, -- void *priv_sta, struct ieee80211_tx_rate_control *txrc) --{ -- struct sk_buff *skb = txrc->skb; -- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); -- struct minstrel_sta_info *mi = priv_sta; -- struct minstrel_priv *mp = priv; -- struct ieee80211_tx_rate *rate = &info->control.rates[0]; -- struct minstrel_rate *msr, *mr; -- unsigned int ndx; -- bool mrr_capable; -- bool prev_sample; -- int delta; -- int sampling_ratio; -- -- /* check multi-rate-retry capabilities & adjust lookaround_rate */ -- mrr_capable = mp->has_mrr && -- !txrc->rts && -- !txrc->bss_conf->use_cts_prot; -- if (mrr_capable) -- sampling_ratio = mp->lookaround_rate_mrr; -- else -- sampling_ratio = mp->lookaround_rate; -- -- /* increase sum packet counter */ -- mi->total_packets++; -- --#ifdef CPTCFG_MAC80211_DEBUGFS -- if (mp->fixed_rate_idx != -1) -- return; --#endif -- -- /* Don't use EAPOL frames for sampling on non-mrr hw */ -- if (mp->hw->max_rates == 1 && -- (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO)) -- return; -- -- delta = (mi->total_packets * sampling_ratio / 100) - -- mi->sample_packets; -- -- /* delta < 0: no sampling required */ -- prev_sample = mi->prev_sample; -- mi->prev_sample = false; -- if (delta < 0 || (!mrr_capable && prev_sample)) -- return; -- -- if (mi->total_packets >= 10000) { -- mi->sample_packets = 0; -- mi->total_packets = 0; -- } else if (delta > mi->n_rates * 2) { -- /* With multi-rate retry, not every planned sample -- * attempt actually gets used, due to the way the retry -- * chain is set up - [max_tp,sample,prob,lowest] for -- * sample_rate < max_tp. -- * -- * If there's too much sampling backlog and the link -- * starts getting worse, minstrel would start bursting -- * out lots of sampling frames, which would result -- * in a large throughput loss. */ -- mi->sample_packets += (delta - mi->n_rates * 2); -- } -- -- /* get next random rate sample */ -- ndx = minstrel_get_next_sample(mi); -- msr = &mi->r[ndx]; -- mr = &mi->r[mi->max_tp_rate[0]]; -- -- /* Decide if direct ( 1st mrr stage) or indirect (2nd mrr stage) -- * rate sampling method should be used. -- * Respect such rates that are not sampled for 20 interations. -- */ -- if (msr->perfect_tx_time < mr->perfect_tx_time || -- msr->stats.sample_skipped >= 20) { -- if (!msr->sample_limit) -- return; -- -- mi->sample_packets++; -- if (msr->sample_limit > 0) -- msr->sample_limit--; -- } -- -- /* If we're not using MRR and the sampling rate already -- * has a probability of >95%, we shouldn't be attempting -- * to use it, as this only wastes precious airtime */ -- if (!mrr_capable && -- (mi->r[ndx].stats.prob_avg > MINSTREL_FRAC(95, 100))) -- return; -- -- mi->prev_sample = true; -- -- rate->idx = mi->r[ndx].rix; -- rate->count = minstrel_get_retry_count(&mi->r[ndx], info); -- info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE; --} -- -- --static void --calc_rate_durations(enum nl80211_band band, -- struct minstrel_rate *d, -- struct ieee80211_rate *rate, -- struct cfg80211_chan_def *chandef) --{ -- int erp = !!(rate->flags & IEEE80211_RATE_ERP_G); -- int shift = ieee80211_chandef_get_shift(chandef); -- -- d->perfect_tx_time = ieee80211_frame_duration(band, 1200, -- DIV_ROUND_UP(rate->bitrate, 1 << shift), erp, 1, -- shift); -- d->ack_time = ieee80211_frame_duration(band, 10, -- DIV_ROUND_UP(rate->bitrate, 1 << shift), erp, 1, -- shift); --} -- --static void --init_sample_table(struct minstrel_sta_info *mi) --{ -- unsigned int i, col, new_idx; -- u8 rnd[8]; -- -- mi->sample_column = 0; -- mi->sample_row = 0; -- memset(mi->sample_table, 0xff, SAMPLE_COLUMNS * mi->n_rates); -- -- for (col = 0; col < SAMPLE_COLUMNS; col++) { -- prandom_bytes(rnd, sizeof(rnd)); -- for (i = 0; i < mi->n_rates; i++) { -- new_idx = (i + rnd[i & 7]) % mi->n_rates; -- while (SAMPLE_TBL(mi, new_idx, col) != 0xff) -- new_idx = (new_idx + 1) % mi->n_rates; -- -- SAMPLE_TBL(mi, new_idx, col) = i; -- } -- } --} -- --static void --minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband, -- struct cfg80211_chan_def *chandef, -- struct ieee80211_sta *sta, void *priv_sta) --{ -- struct minstrel_sta_info *mi = priv_sta; -- struct minstrel_priv *mp = priv; -- struct ieee80211_rate *ctl_rate; -- unsigned int i, n = 0; -- unsigned int t_slot = 9; /* FIXME: get real slot time */ -- u32 rate_flags; -- -- mi->sta = sta; -- mi->lowest_rix = rate_lowest_index(sband, sta); -- ctl_rate = &sband->bitrates[mi->lowest_rix]; -- mi->sp_ack_dur = ieee80211_frame_duration(sband->band, 10, -- ctl_rate->bitrate, -- !!(ctl_rate->flags & IEEE80211_RATE_ERP_G), 1, -- ieee80211_chandef_get_shift(chandef)); -- -- rate_flags = ieee80211_chandef_rate_flags(&mp->hw->conf.chandef); -- memset(mi->max_tp_rate, 0, sizeof(mi->max_tp_rate)); -- mi->max_prob_rate = 0; -- -- for (i = 0; i < sband->n_bitrates; i++) { -- struct minstrel_rate *mr = &mi->r[n]; -- struct minstrel_rate_stats *mrs = &mi->r[n].stats; -- unsigned int tx_time = 0, tx_time_cts = 0, tx_time_rtscts = 0; -- unsigned int tx_time_single; -- unsigned int cw = mp->cw_min; -- int shift; -- -- if (!rate_supported(sta, sband->band, i)) -- continue; -- if ((rate_flags & sband->bitrates[i].flags) != rate_flags) -- continue; -- -- n++; -- memset(mr, 0, sizeof(*mr)); -- memset(mrs, 0, sizeof(*mrs)); -- -- mr->rix = i; -- shift = ieee80211_chandef_get_shift(chandef); -- mr->bitrate = DIV_ROUND_UP(sband->bitrates[i].bitrate, -- (1 << shift) * 5); -- calc_rate_durations(sband->band, mr, &sband->bitrates[i], -- chandef); -- -- /* calculate maximum number of retransmissions before -- * fallback (based on maximum segment size) */ -- mr->sample_limit = -1; -- mrs->retry_count = 1; -- mr->retry_count_cts = 1; -- mrs->retry_count_rtscts = 1; -- tx_time = mr->perfect_tx_time + mi->sp_ack_dur; -- do { -- /* add one retransmission */ -- tx_time_single = mr->ack_time + mr->perfect_tx_time; -- -- /* contention window */ -- tx_time_single += (t_slot * cw) >> 1; -- cw = min((cw << 1) | 1, mp->cw_max); -- -- tx_time += tx_time_single; -- tx_time_cts += tx_time_single + mi->sp_ack_dur; -- tx_time_rtscts += tx_time_single + 2 * mi->sp_ack_dur; -- if ((tx_time_cts < mp->segment_size) && -- (mr->retry_count_cts < mp->max_retry)) -- mr->retry_count_cts++; -- if ((tx_time_rtscts < mp->segment_size) && -- (mrs->retry_count_rtscts < mp->max_retry)) -- mrs->retry_count_rtscts++; -- } while ((tx_time < mp->segment_size) && -- (++mr->stats.retry_count < mp->max_retry)); -- mr->adjusted_retry_count = mrs->retry_count; -- if (!(sband->bitrates[i].flags & IEEE80211_RATE_ERP_G)) -- mr->retry_count_cts = mrs->retry_count; -- } -- -- for (i = n; i < sband->n_bitrates; i++) { -- struct minstrel_rate *mr = &mi->r[i]; -- mr->rix = -1; -- } -- -- mi->n_rates = n; -- mi->last_stats_update = jiffies; -- -- init_sample_table(mi); -- minstrel_update_rates(mp, mi); --} -- --static u32 minstrel_get_expected_throughput(void *priv_sta) --{ -- struct minstrel_sta_info *mi = priv_sta; -- struct minstrel_rate_stats *tmp_mrs; -- int idx = mi->max_tp_rate[0]; -- int tmp_cur_tp; -- -- /* convert pkt per sec in kbps (1200 is the average pkt size used for -- * computing cur_tp -- */ -- tmp_mrs = &mi->r[idx].stats; -- tmp_cur_tp = minstrel_get_tp_avg(&mi->r[idx], tmp_mrs->prob_avg) * 10; -- tmp_cur_tp = tmp_cur_tp * 1200 * 8 / 1024; -- -- return tmp_cur_tp; --} -- --const struct rate_control_ops mac80211_minstrel = { -- .tx_status_ext = minstrel_tx_status, -- .get_rate = minstrel_get_rate, -- .rate_init = minstrel_rate_init, -- .get_expected_throughput = minstrel_get_expected_throughput, --}; ---- a/net/mac80211/rc80211_minstrel.h -+++ /dev/null -@@ -1,185 +0,0 @@ --/* SPDX-License-Identifier: GPL-2.0-only */ --/* -- * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org> -- */ -- --#ifndef __RC_MINSTREL_H --#define __RC_MINSTREL_H -- --#define EWMA_LEVEL 96 /* ewma weighting factor [/EWMA_DIV] */ --#define EWMA_DIV 128 --#define SAMPLE_COLUMNS 10 /* number of columns in sample table */ -- --/* scaled fraction values */ --#define MINSTREL_SCALE 12 --#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div) --#define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE) -- --/* number of highest throughput rates to consider*/ --#define MAX_THR_RATES 4 -- --/* -- * Coefficients for moving average with noise filter (period=16), -- * scaled by 10 bits -- * -- * a1 = exp(-pi * sqrt(2) / period) -- * coeff2 = 2 * a1 * cos(sqrt(2) * 2 * pi / period) -- * coeff3 = -sqr(a1) -- * coeff1 = 1 - coeff2 - coeff3 -- */ --#define MINSTREL_AVG_COEFF1 (MINSTREL_FRAC(1, 1) - \ -- MINSTREL_AVG_COEFF2 - \ -- MINSTREL_AVG_COEFF3) --#define MINSTREL_AVG_COEFF2 0x00001499 --#define MINSTREL_AVG_COEFF3 -0x0000092e -- --/* -- * Perform EWMA (Exponentially Weighted Moving Average) calculation -- */ --static inline int --minstrel_ewma(int old, int new, int weight) --{ -- int diff, incr; -- -- diff = new - old; -- incr = (EWMA_DIV - weight) * diff / EWMA_DIV; -- -- return old + incr; --} -- --static inline int minstrel_filter_avg_add(u16 *prev_1, u16 *prev_2, s32 in) --{ -- s32 out_1 = *prev_1; -- s32 out_2 = *prev_2; -- s32 val; -- -- if (!in) -- in += 1; -- -- if (!out_1) { -- val = out_1 = in; -- goto out; -- } -- -- val = MINSTREL_AVG_COEFF1 * in; -- val += MINSTREL_AVG_COEFF2 * out_1; -- val += MINSTREL_AVG_COEFF3 * out_2; -- val >>= MINSTREL_SCALE; -- -- if (val > 1 << MINSTREL_SCALE) -- val = 1 << MINSTREL_SCALE; -- if (val < 0) -- val = 1; -- --out: -- *prev_2 = out_1; -- *prev_1 = val; -- -- return val; --} -- --struct minstrel_rate_stats { -- /* current / last sampling period attempts/success counters */ -- u16 attempts, last_attempts; -- u16 success, last_success; -- -- /* total attempts/success counters */ -- u32 att_hist, succ_hist; -- -- /* prob_avg - moving average of prob */ -- u16 prob_avg; -- u16 prob_avg_1; -- -- /* maximum retry counts */ -- u8 retry_count; -- u8 retry_count_rtscts; -- -- u8 sample_skipped; -- bool retry_updated; --}; -- --struct minstrel_rate { -- int bitrate; -- -- s8 rix; -- u8 retry_count_cts; -- u8 adjusted_retry_count; -- -- unsigned int perfect_tx_time; -- unsigned int ack_time; -- -- int sample_limit; -- -- struct minstrel_rate_stats stats; --}; -- --struct minstrel_sta_info { -- struct ieee80211_sta *sta; -- -- unsigned long last_stats_update; -- unsigned int sp_ack_dur; -- unsigned int rate_avg; -- -- unsigned int lowest_rix; -- -- u8 max_tp_rate[MAX_THR_RATES]; -- u8 max_prob_rate; -- unsigned int total_packets; -- unsigned int sample_packets; -- -- unsigned int sample_row; -- unsigned int sample_column; -- -- int n_rates; -- struct minstrel_rate *r; -- bool prev_sample; -- -- /* sampling table */ -- u8 *sample_table; --}; -- --struct minstrel_priv { -- struct ieee80211_hw *hw; -- bool has_mrr; -- bool new_avg; -- u32 sample_switch; -- unsigned int cw_min; -- unsigned int cw_max; -- unsigned int max_retry; -- unsigned int segment_size; -- unsigned int update_interval; -- unsigned int lookaround_rate; -- unsigned int lookaround_rate_mrr; -- -- u8 cck_rates[4]; -- u8 ofdm_rates[NUM_NL80211_BANDS][8]; -- --#ifdef CPTCFG_MAC80211_DEBUGFS -- /* -- * enable fixed rate processing per RC -- * - write static index to debugfs:ieee80211/phyX/rc/fixed_rate_idx -- * - write -1 to enable RC processing again -- * - setting will be applied on next update -- */ -- u32 fixed_rate_idx; --#endif --}; -- --struct minstrel_debugfs_info { -- size_t len; -- char buf[]; --}; -- --extern const struct rate_control_ops mac80211_minstrel; --void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir); -- --/* Recalculate success probabilities and counters for a given rate using EWMA */ --void minstrel_calc_rate_stats(struct minstrel_priv *mp, -- struct minstrel_rate_stats *mrs); --int minstrel_get_tp_avg(struct minstrel_rate *mr, int prob_avg); -- --/* debugfs */ --int minstrel_stats_open(struct inode *inode, struct file *file); --int minstrel_stats_csv_open(struct inode *inode, struct file *file); -- --#endif ---- a/net/mac80211/rc80211_minstrel_debugfs.c -+++ /dev/null -@@ -1,172 +0,0 @@ --/* -- * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org> -- * -- * This program is free software; you can redistribute it and/or modify -- * it under the terms of the GNU General Public License version 2 as -- * published by the Free Software Foundation. -- * -- * Based on minstrel.c: -- * Copyright (C) 2005-2007 Derek Smithies <derek@indranet.co.nz> -- * Sponsored by Indranet Technologies Ltd -- * -- * Based on sample.c: -- * Copyright (c) 2005 John Bicket -- * All rights reserved. -- * -- * Redistribution and use in source and binary forms, with or without -- * modification, are permitted provided that the following conditions -- * are met: -- * 1. Redistributions of source code must retain the above copyright -- * notice, this list of conditions and the following disclaimer, -- * without modification. -- * 2. Redistributions in binary form must reproduce at minimum a disclaimer -- * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any -- * redistribution must be conditioned upon including a substantially -- * similar Disclaimer requirement for further binary redistribution. -- * 3. Neither the names of the above-listed copyright holders nor the names -- * of any contributors may be used to endorse or promote products derived -- * from this software without specific prior written permission. -- * -- * Alternatively, this software may be distributed under the terms of the -- * GNU General Public License ("GPL") version 2 as published by the Free -- * Software Foundation. -- * -- * NO WARRANTY -- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -- * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY -- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL -- * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, -- * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER -- * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF -- * THE POSSIBILITY OF SUCH DAMAGES. -- */ --#include <linux/netdevice.h> --#include <linux/types.h> --#include <linux/skbuff.h> --#include <linux/debugfs.h> --#include <linux/ieee80211.h> --#include <linux/slab.h> --#include <linux/export.h> --#include <net/mac80211.h> --#include "rc80211_minstrel.h" -- --int --minstrel_stats_open(struct inode *inode, struct file *file) --{ -- struct minstrel_sta_info *mi = inode->i_private; -- struct minstrel_debugfs_info *ms; -- unsigned int i, tp_max, tp_avg, eprob; -- char *p; -- -- ms = kmalloc(2048, GFP_KERNEL); -- if (!ms) -- return -ENOMEM; -- -- file->private_data = ms; -- p = ms->buf; -- p += sprintf(p, "\n"); -- p += sprintf(p, -- "best __________rate_________ ____statistics___ ____last_____ ______sum-of________\n"); -- p += sprintf(p, -- "rate [name idx airtime max_tp] [avg(tp) avg(prob)] [retry|suc|att] [#success | #attempts]\n"); -- -- for (i = 0; i < mi->n_rates; i++) { -- struct minstrel_rate *mr = &mi->r[i]; -- struct minstrel_rate_stats *mrs = &mi->r[i].stats; -- -- *(p++) = (i == mi->max_tp_rate[0]) ? 'A' : ' '; -- *(p++) = (i == mi->max_tp_rate[1]) ? 'B' : ' '; -- *(p++) = (i == mi->max_tp_rate[2]) ? 'C' : ' '; -- *(p++) = (i == mi->max_tp_rate[3]) ? 'D' : ' '; -- *(p++) = (i == mi->max_prob_rate) ? 'P' : ' '; -- -- p += sprintf(p, " %3u%s ", mr->bitrate / 2, -- (mr->bitrate & 1 ? ".5" : " ")); -- p += sprintf(p, "%3u ", i); -- p += sprintf(p, "%6u ", mr->perfect_tx_time); -- -- tp_max = minstrel_get_tp_avg(mr, MINSTREL_FRAC(100,100)); -- tp_avg = minstrel_get_tp_avg(mr, mrs->prob_avg); -- eprob = MINSTREL_TRUNC(mrs->prob_avg * 1000); -- -- p += sprintf(p, "%4u.%1u %4u.%1u %3u.%1u" -- " %3u %3u %-3u " -- "%9llu %-9llu\n", -- tp_max / 10, tp_max % 10, -- tp_avg / 10, tp_avg % 10, -- eprob / 10, eprob % 10, -- mrs->retry_count, -- mrs->last_success, -- mrs->last_attempts, -- (unsigned long long)mrs->succ_hist, -- (unsigned long long)mrs->att_hist); -- } -- p += sprintf(p, "\nTotal packet count:: ideal %d " -- "lookaround %d\n\n", -- mi->total_packets - mi->sample_packets, -- mi->sample_packets); -- ms->len = p - ms->buf; -- -- WARN_ON(ms->len + sizeof(*ms) > 2048); -- -- return 0; --} -- --int --minstrel_stats_csv_open(struct inode *inode, struct file *file) --{ -- struct minstrel_sta_info *mi = inode->i_private; -- struct minstrel_debugfs_info *ms; -- unsigned int i, tp_max, tp_avg, eprob; -- char *p; -- -- ms = kmalloc(2048, GFP_KERNEL); -- if (!ms) -- return -ENOMEM; -- -- file->private_data = ms; -- p = ms->buf; -- -- for (i = 0; i < mi->n_rates; i++) { -- struct minstrel_rate *mr = &mi->r[i]; -- struct minstrel_rate_stats *mrs = &mi->r[i].stats; -- -- p += sprintf(p, "%s" ,((i == mi->max_tp_rate[0]) ? "A" : "")); -- p += sprintf(p, "%s" ,((i == mi->max_tp_rate[1]) ? "B" : "")); -- p += sprintf(p, "%s" ,((i == mi->max_tp_rate[2]) ? "C" : "")); -- p += sprintf(p, "%s" ,((i == mi->max_tp_rate[3]) ? "D" : "")); -- p += sprintf(p, "%s" ,((i == mi->max_prob_rate) ? "P" : "")); -- -- p += sprintf(p, ",%u%s", mr->bitrate / 2, -- (mr->bitrate & 1 ? ".5," : ",")); -- p += sprintf(p, "%u,", i); -- p += sprintf(p, "%u,",mr->perfect_tx_time); -- -- tp_max = minstrel_get_tp_avg(mr, MINSTREL_FRAC(100,100)); -- tp_avg = minstrel_get_tp_avg(mr, mrs->prob_avg); -- eprob = MINSTREL_TRUNC(mrs->prob_avg * 1000); -- -- p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u,%u,%u," -- "%llu,%llu,%d,%d\n", -- tp_max / 10, tp_max % 10, -- tp_avg / 10, tp_avg % 10, -- eprob / 10, eprob % 10, -- mrs->retry_count, -- mrs->last_success, -- mrs->last_attempts, -- (unsigned long long)mrs->succ_hist, -- (unsigned long long)mrs->att_hist, -- mi->total_packets - mi->sample_packets, -- mi->sample_packets); -- -- } -- ms->len = p - ms->buf; -- -- WARN_ON(ms->len + sizeof(*ms) > 2048); -- -- return 0; --} ---- a/net/mac80211/rc80211_minstrel_ht.c -+++ b/net/mac80211/rc80211_minstrel_ht.c -@@ -13,7 +13,6 @@ - #include <net/mac80211.h> - #include "rate.h" - #include "sta_info.h" --#include "rc80211_minstrel.h" - #include "rc80211_minstrel_ht.h" - - #define AVG_AMPDU_SIZE 16 -@@ -716,6 +715,83 @@ out: - mi->sample_mode = MINSTREL_SAMPLE_ACTIVE; - } - -+static inline int -+minstrel_ewma(int old, int new, int weight) -+{ -+ int diff, incr; -+ -+ diff = new - old; -+ incr = (EWMA_DIV - weight) * diff / EWMA_DIV; -+ -+ return old + incr; -+} -+ -+static inline int minstrel_filter_avg_add(u16 *prev_1, u16 *prev_2, s32 in) -+{ -+ s32 out_1 = *prev_1; -+ s32 out_2 = *prev_2; -+ s32 val; -+ -+ if (!in) -+ in += 1; -+ -+ if (!out_1) { -+ val = out_1 = in; -+ goto out; -+ } -+ -+ val = MINSTREL_AVG_COEFF1 * in; -+ val += MINSTREL_AVG_COEFF2 * out_1; -+ val += MINSTREL_AVG_COEFF3 * out_2; -+ val >>= MINSTREL_SCALE; -+ -+ if (val > 1 << MINSTREL_SCALE) -+ val = 1 << MINSTREL_SCALE; -+ if (val < 0) -+ val = 1; -+ -+out: -+ *prev_2 = out_1; -+ *prev_1 = val; -+ -+ return val; -+} -+ -+/* -+* Recalculate statistics and counters of a given rate -+*/ -+static void -+minstrel_ht_calc_rate_stats(struct minstrel_priv *mp, -+ struct minstrel_rate_stats *mrs) -+{ -+ unsigned int cur_prob; -+ -+ if (unlikely(mrs->attempts > 0)) { -+ mrs->sample_skipped = 0; -+ cur_prob = MINSTREL_FRAC(mrs->success, mrs->attempts); -+ if (mp->new_avg) { -+ minstrel_filter_avg_add(&mrs->prob_avg, -+ &mrs->prob_avg_1, cur_prob); -+ } else if (unlikely(!mrs->att_hist)) { -+ mrs->prob_avg = cur_prob; -+ } else { -+ /*update exponential weighted moving avarage */ -+ mrs->prob_avg = minstrel_ewma(mrs->prob_avg, -+ cur_prob, -+ EWMA_LEVEL); -+ } -+ mrs->att_hist += mrs->attempts; -+ mrs->succ_hist += mrs->success; -+ } else { -+ mrs->sample_skipped++; -+ } -+ -+ mrs->last_success = mrs->success; -+ mrs->last_attempts = mrs->attempts; -+ mrs->success = 0; -+ mrs->attempts = 0; -+} -+ - /* - * Update rate statistics and select new primary rates - * -@@ -808,7 +884,7 @@ minstrel_ht_update_stats(struct minstrel - - mrs = &mg->rates[i]; - mrs->retry_updated = false; -- minstrel_calc_rate_stats(mp, mrs); -+ minstrel_ht_calc_rate_stats(mp, mrs); - cur_prob = mrs->prob_avg; - - if (minstrel_ht_get_tp_avg(mi, group, i, cur_prob) == 0) -@@ -960,8 +1036,7 @@ minstrel_ht_tx_status(void *priv, struct - void *priv_sta, struct ieee80211_tx_status *st) - { - struct ieee80211_tx_info *info = st->info; -- struct minstrel_ht_sta_priv *msp = priv_sta; -- struct minstrel_ht_sta *mi = &msp->ht; -+ struct minstrel_ht_sta *mi = priv_sta; - struct ieee80211_tx_rate *ar = info->status.rates; - struct minstrel_rate_stats *rate, *rate2, *rate_sample = NULL; - struct minstrel_priv *mp = priv; -@@ -1372,8 +1447,7 @@ minstrel_ht_get_rate(void *priv, struct - const struct mcs_group *sample_group; - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(txrc->skb); - struct ieee80211_tx_rate *rate = &info->status.rates[0]; -- struct minstrel_ht_sta_priv *msp = priv_sta; -- struct minstrel_ht_sta *mi = &msp->ht; -+ struct minstrel_ht_sta *mi = priv_sta; - struct minstrel_priv *mp = priv; - int sample_idx; - -@@ -1484,8 +1558,7 @@ minstrel_ht_update_caps(void *priv, stru - struct ieee80211_sta *sta, void *priv_sta) - { - struct minstrel_priv *mp = priv; -- struct minstrel_ht_sta_priv *msp = priv_sta; -- struct minstrel_ht_sta *mi = &msp->ht; -+ struct minstrel_ht_sta *mi = priv_sta; - struct ieee80211_mcs_info *mcs = &sta->ht_cap.mcs; - u16 ht_cap = sta->ht_cap.cap; - struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap; -@@ -1647,7 +1720,7 @@ static void * - minstrel_ht_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp) - { - struct ieee80211_supported_band *sband; -- struct minstrel_ht_sta_priv *msp; -+ struct minstrel_ht_sta *mi; - struct minstrel_priv *mp = priv; - struct ieee80211_hw *hw = mp->hw; - int max_rates = 0; -@@ -1659,35 +1732,13 @@ minstrel_ht_alloc_sta(void *priv, struct - max_rates = sband->n_bitrates; - } - -- msp = kzalloc(sizeof(*msp), gfp); -- if (!msp) -- return NULL; -- -- msp->ratelist = kcalloc(max_rates, sizeof(struct minstrel_rate), gfp); -- if (!msp->ratelist) -- goto error; -- -- msp->sample_table = kmalloc_array(max_rates, SAMPLE_COLUMNS, gfp); -- if (!msp->sample_table) -- goto error1; -- -- return msp; -- --error1: -- kfree(msp->ratelist); --error: -- kfree(msp); -- return NULL; -+ return kzalloc(sizeof(*mi), gfp); - } - - static void - minstrel_ht_free_sta(void *priv, struct ieee80211_sta *sta, void *priv_sta) - { -- struct minstrel_ht_sta_priv *msp = priv_sta; -- -- kfree(msp->sample_table); -- kfree(msp->ratelist); -- kfree(msp); -+ kfree(priv_sta); - } - - static void -@@ -1768,12 +1819,6 @@ minstrel_ht_alloc(struct ieee80211_hw *h - mp->cw_min = 15; - mp->cw_max = 1023; - -- /* number of packets (in %) to use for sampling other rates -- * sample less often for non-mrr packets, because the overhead -- * is much higher than with mrr */ -- mp->lookaround_rate = 5; -- mp->lookaround_rate_mrr = 10; -- - /* maximum time that the hw is allowed to stay in one MRR segment */ - mp->segment_size = 6000; - -@@ -1821,8 +1866,7 @@ minstrel_ht_free(void *priv) - - static u32 minstrel_ht_get_expected_throughput(void *priv_sta) - { -- struct minstrel_ht_sta_priv *msp = priv_sta; -- struct minstrel_ht_sta *mi = &msp->ht; -+ struct minstrel_ht_sta *mi = priv_sta; - int i, j, prob, tp_avg; - - i = mi->max_tp_rate[0] / MCS_GROUP_RATES; ---- a/net/mac80211/rc80211_minstrel_ht.h -+++ b/net/mac80211/rc80211_minstrel_ht.h -@@ -6,6 +6,33 @@ - #ifndef __RC_MINSTREL_HT_H - #define __RC_MINSTREL_HT_H - -+/* number of highest throughput rates to consider*/ -+#define MAX_THR_RATES 4 -+#define SAMPLE_COLUMNS 10 /* number of columns in sample table */ -+ -+/* scaled fraction values */ -+#define MINSTREL_SCALE 12 -+#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div) -+#define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE) -+ -+#define EWMA_LEVEL 96 /* ewma weighting factor [/EWMA_DIV] */ -+#define EWMA_DIV 128 -+ -+/* -+ * Coefficients for moving average with noise filter (period=16), -+ * scaled by 10 bits -+ * -+ * a1 = exp(-pi * sqrt(2) / period) -+ * coeff2 = 2 * a1 * cos(sqrt(2) * 2 * pi / period) -+ * coeff3 = -sqr(a1) -+ * coeff1 = 1 - coeff2 - coeff3 -+ */ -+#define MINSTREL_AVG_COEFF1 (MINSTREL_FRAC(1, 1) - \ -+ MINSTREL_AVG_COEFF2 - \ -+ MINSTREL_AVG_COEFF3) -+#define MINSTREL_AVG_COEFF2 0x00001499 -+#define MINSTREL_AVG_COEFF3 -0x0000092e -+ - /* - * The number of streams can be changed to 2 to reduce code - * size and memory footprint. -@@ -30,6 +57,32 @@ - - #define MCS_GROUP_RATES 10 - -+struct minstrel_priv { -+ struct ieee80211_hw *hw; -+ bool has_mrr; -+ bool new_avg; -+ u32 sample_switch; -+ unsigned int cw_min; -+ unsigned int cw_max; -+ unsigned int max_retry; -+ unsigned int segment_size; -+ unsigned int update_interval; -+ -+ u8 cck_rates[4]; -+ u8 ofdm_rates[NUM_NL80211_BANDS][8]; -+ -+#ifdef CPTCFG_MAC80211_DEBUGFS -+ /* -+ * enable fixed rate processing per RC -+ * - write static index to debugfs:ieee80211/phyX/rc/fixed_rate_idx -+ * - write -1 to enable RC processing again -+ * - setting will be applied on next update -+ */ -+ u32 fixed_rate_idx; -+#endif -+}; -+ -+ - struct mcs_group { - u16 flags; - u8 streams; -@@ -42,6 +95,26 @@ extern const s16 minstrel_cck_bitrates[4 - extern const s16 minstrel_ofdm_bitrates[8]; - extern const struct mcs_group minstrel_mcs_groups[]; - -+struct minstrel_rate_stats { -+ /* current / last sampling period attempts/success counters */ -+ u16 attempts, last_attempts; -+ u16 success, last_success; -+ -+ /* total attempts/success counters */ -+ u32 att_hist, succ_hist; -+ -+ /* prob_avg - moving average of prob */ -+ u16 prob_avg; -+ u16 prob_avg_1; -+ -+ /* maximum retry counts */ -+ u8 retry_count; -+ u8 retry_count_rtscts; -+ -+ u8 sample_skipped; -+ bool retry_updated; -+}; -+ - struct minstrel_mcs_group_data { - u8 index; - u8 column; -@@ -111,12 +184,6 @@ struct minstrel_ht_sta { - struct minstrel_mcs_group_data groups[MINSTREL_GROUPS_NB]; - }; - --struct minstrel_ht_sta_priv { -- struct minstrel_ht_sta ht; -- void *ratelist; -- void *sample_table; --}; -- - void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir); - int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate, - int prob_avg); ---- a/net/mac80211/rc80211_minstrel_ht_debugfs.c -+++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c -@@ -9,9 +9,13 @@ - #include <linux/ieee80211.h> - #include <linux/export.h> - #include <net/mac80211.h> --#include "rc80211_minstrel.h" - #include "rc80211_minstrel_ht.h" - -+struct minstrel_debugfs_info { -+ size_t len; -+ char buf[]; -+}; -+ - static ssize_t - minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos) - { -@@ -127,8 +131,7 @@ minstrel_ht_stats_dump(struct minstrel_h - static int - minstrel_ht_stats_open(struct inode *inode, struct file *file) - { -- struct minstrel_ht_sta_priv *msp = inode->i_private; -- struct minstrel_ht_sta *mi = &msp->ht; -+ struct minstrel_ht_sta *mi = inode->i_private; - struct minstrel_debugfs_info *ms; - unsigned int i; - char *p; -@@ -276,8 +279,7 @@ minstrel_ht_stats_csv_dump(struct minstr - static int - minstrel_ht_stats_csv_open(struct inode *inode, struct file *file) - { -- struct minstrel_ht_sta_priv *msp = inode->i_private; -- struct minstrel_ht_sta *mi = &msp->ht; -+ struct minstrel_ht_sta *mi = inode->i_private; - struct minstrel_debugfs_info *ms; - unsigned int i; - char *p; -@@ -313,10 +315,8 @@ static const struct file_operations mins - void - minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir) - { -- struct minstrel_ht_sta_priv *msp = priv_sta; -- -- debugfs_create_file("rc_stats", 0444, dir, msp, -+ debugfs_create_file("rc_stats", 0444, dir, priv_sta, - &minstrel_ht_stat_fops); -- debugfs_create_file("rc_stats_csv", 0444, dir, msp, -+ debugfs_create_file("rc_stats_csv", 0444, dir, priv_sta, - &minstrel_ht_stat_csv_fops); - } |