From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/net/mac80211/rc80211_minstrel.c | 214 ++++++-----------------------------------------------
1 files changed, 26 insertions(+), 188 deletions(-)
diff --git a/kernel/net/mac80211/rc80211_minstrel.c b/kernel/net/mac80211/rc80211_minstrel.c
index 1f3c420..b13b1da 100644
--- a/kernel/net/mac80211/rc80211_minstrel.c
+++ b/kernel/net/mac80211/rc80211_minstrel.c
@@ -70,7 +70,7 @@
}
/* return current EMWA throughput */
-int minstrel_get_tp_avg(struct minstrel_rate *mr, int prob_ewma)
+int minstrel_get_tp_avg(struct minstrel_rate *mr, int prob_avg)
{
int usecs;
@@ -79,13 +79,13 @@
usecs = 1000000;
/* reset thr. below 10% success */
- if (mr->stats.prob_ewma < MINSTREL_FRAC(10, 100))
+ if (mr->stats.prob_avg < MINSTREL_FRAC(10, 100))
return 0;
- if (prob_ewma > MINSTREL_FRAC(90, 100))
+ if (prob_avg > MINSTREL_FRAC(90, 100))
return MINSTREL_TRUNC(100000 * (MINSTREL_FRAC(90, 100) / usecs));
else
- return MINSTREL_TRUNC(100000 * (prob_ewma / usecs));
+ return MINSTREL_TRUNC(100000 * (prob_avg / usecs));
}
/* find & sort topmost throughput rates */
@@ -98,8 +98,8 @@
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_ewma) <=
- minstrel_get_tp_avg(&mi->r[tp_list[j - 1]], tmp_mrs->prob_ewma))
+ 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;
}
@@ -157,26 +157,24 @@
* Recalculate statistics and counters of a given rate
*/
void
-minstrel_calc_rate_stats(struct minstrel_rate_stats *mrs)
+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 (unlikely(!mrs->att_hist)) {
- mrs->prob_ewma = cur_prob;
+ 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 variance */
- mrs->prob_ewmv = minstrel_ewmv(mrs->prob_ewmv,
- cur_prob,
- mrs->prob_ewma,
- EWMA_LEVEL);
-
/*update exponential weighted moving avarage */
- mrs->prob_ewma = minstrel_ewma(mrs->prob_ewma,
- cur_prob,
- EWMA_LEVEL);
+ mrs->prob_avg = minstrel_ewma(mrs->prob_avg,
+ cur_prob,
+ EWMA_LEVEL);
}
mrs->att_hist += mrs->attempts;
mrs->succ_hist += mrs->success;
@@ -206,12 +204,12 @@
struct minstrel_rate_stats *tmp_mrs = &mi->r[tmp_prob_rate].stats;
/* Update statistics of success probability per rate */
- minstrel_calc_rate_stats(mrs);
+ 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_ewma > MINSTREL_FRAC(95, 100) ||
- mrs->prob_ewma < MINSTREL_FRAC(10, 100)) {
+ 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;
@@ -231,14 +229,14 @@
* 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_ewma >= MINSTREL_FRAC(95, 100)) {
- tmp_cur_tp = minstrel_get_tp_avg(mr, mrs->prob_ewma);
+ 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_ewma);
+ tmp_mrs->prob_avg);
if (tmp_cur_tp >= tmp_prob_tp)
tmp_prob_rate = i;
} else {
- if (mrs->prob_ewma >= tmp_mrs->prob_ewma)
+ if (mrs->prob_avg >= tmp_mrs->prob_avg)
tmp_prob_rate = i;
}
}
@@ -290,7 +288,7 @@
}
if (time_after(jiffies, mi->last_stats_update +
- (mp->update_interval * HZ) / 1000))
+ mp->update_interval / (mp->new_avg ? 2 : 1)))
minstrel_update_stats(mp, mi);
}
@@ -339,10 +337,6 @@
bool prev_sample;
int delta;
int sampling_ratio;
-
- /* management/no-ack frames do not use rate control */
- if (rate_control_send_low(sta, priv_sta, txrc))
- return;
/* check multi-rate-retry capabilities & adjust lookaround_rate */
mrr_capable = mp->has_mrr &&
@@ -414,7 +408,7 @@
* 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_ewma > MINSTREL_FRAC(95, 100)))
+ (mi->r[ndx].stats.prob_avg > MINSTREL_FRAC(95, 100)))
return;
mi->prev_sample = true;
@@ -555,141 +549,6 @@
minstrel_update_rates(mp, mi);
}
-static void *
-minstrel_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
-{
- struct ieee80211_supported_band *sband;
- struct minstrel_sta_info *mi;
- struct minstrel_priv *mp = priv;
- struct ieee80211_hw *hw = mp->hw;
- int max_rates = 0;
- int i;
-
- mi = kzalloc(sizeof(struct minstrel_sta_info), gfp);
- if (!mi)
- return NULL;
-
- for (i = 0; i < NUM_NL80211_BANDS; i++) {
- sband = hw->wiphy->bands[i];
- if (sband && sband->n_bitrates > max_rates)
- max_rates = sband->n_bitrates;
- }
-
- mi->r = kcalloc(max_rates, sizeof(struct minstrel_rate), gfp);
- if (!mi->r)
- goto error;
-
- mi->sample_table = kmalloc_array(max_rates, SAMPLE_COLUMNS, gfp);
- if (!mi->sample_table)
- goto error1;
-
- mi->last_stats_update = jiffies;
- return mi;
-
-error1:
- kfree(mi->r);
-error:
- kfree(mi);
- return NULL;
-}
-
-static void
-minstrel_free_sta(void *priv, struct ieee80211_sta *sta, void *priv_sta)
-{
- struct minstrel_sta_info *mi = priv_sta;
-
- kfree(mi->sample_table);
- kfree(mi->r);
- kfree(mi);
-}
-
-static void
-minstrel_init_cck_rates(struct minstrel_priv *mp)
-{
- static const int bitrates[4] = { 10, 20, 55, 110 };
- struct ieee80211_supported_band *sband;
- u32 rate_flags = ieee80211_chandef_rate_flags(&mp->hw->conf.chandef);
- int i, j;
-
- sband = mp->hw->wiphy->bands[NL80211_BAND_2GHZ];
- if (!sband)
- return;
-
- for (i = 0, j = 0; i < sband->n_bitrates; i++) {
- struct ieee80211_rate *rate = &sband->bitrates[i];
-
- if (rate->flags & IEEE80211_RATE_ERP_G)
- continue;
-
- if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
- continue;
-
- for (j = 0; j < ARRAY_SIZE(bitrates); j++) {
- if (rate->bitrate != bitrates[j])
- continue;
-
- mp->cck_rates[j] = i;
- break;
- }
- }
-}
-
-static void *
-minstrel_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
-{
- struct minstrel_priv *mp;
-
- mp = kzalloc(sizeof(struct minstrel_priv), GFP_ATOMIC);
- if (!mp)
- return NULL;
-
- /* contention window settings
- * Just an approximation. Using the per-queue values would complicate
- * the calculations and is probably unnecessary */
- 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;
-
- if (hw->max_rate_tries > 0)
- mp->max_retry = hw->max_rate_tries;
- else
- /* safe default, does not necessarily have to match hw properties */
- mp->max_retry = 7;
-
- if (hw->max_rates >= 4)
- mp->has_mrr = true;
-
- mp->hw = hw;
- mp->update_interval = 100;
-
-#ifdef CONFIG_MAC80211_DEBUGFS
- mp->fixed_rate_idx = (u32) -1;
- mp->dbg_fixed_rate = debugfs_create_u32("fixed_rate_idx",
- 0666, debugfsdir, &mp->fixed_rate_idx);
-#endif
-
- minstrel_init_cck_rates(mp);
-
- return mp;
-}
-
-static void
-minstrel_free(void *priv)
-{
-#ifdef CONFIG_MAC80211_DEBUGFS
- debugfs_remove(((struct minstrel_priv *)priv)->dbg_fixed_rate);
-#endif
- kfree(priv);
-}
-
static u32 minstrel_get_expected_throughput(void *priv_sta)
{
struct minstrel_sta_info *mi = priv_sta;
@@ -701,36 +560,15 @@
* computing cur_tp
*/
tmp_mrs = &mi->r[idx].stats;
- tmp_cur_tp = minstrel_get_tp_avg(&mi->r[idx], tmp_mrs->prob_ewma) * 10;
+ 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 = {
- .name = "minstrel",
.tx_status_ext = minstrel_tx_status,
.get_rate = minstrel_get_rate,
.rate_init = minstrel_rate_init,
- .alloc = minstrel_alloc,
- .free = minstrel_free,
- .alloc_sta = minstrel_alloc_sta,
- .free_sta = minstrel_free_sta,
-#ifdef CONFIG_MAC80211_DEBUGFS
- .add_sta_debugfs = minstrel_add_sta_debugfs,
- .remove_sta_debugfs = minstrel_remove_sta_debugfs,
-#endif
.get_expected_throughput = minstrel_get_expected_throughput,
};
-
-int __init
-rc80211_minstrel_init(void)
-{
- return ieee80211_rate_control_register(&mac80211_minstrel);
-}
-
-void
-rc80211_minstrel_exit(void)
-{
- ieee80211_rate_control_unregister(&mac80211_minstrel);
-}
--
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