修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/net/mac80211/rc80211_minstrel.c
..
..
@@ -70,7 +70,7 @@
70
70
 }
71
71
 
72
72
 /* return current EMWA throughput */
73
-int minstrel_get_tp_avg(struct minstrel_rate *mr, int prob_ewma)
73
+int minstrel_get_tp_avg(struct minstrel_rate *mr, int prob_avg)
74
74
 {
75
75
 	int usecs;
76
76
 
..
..
@@ -79,13 +79,13 @@
79
79
 		usecs = 1000000;
80
80
 
81
81
 	/* reset thr. below 10% success */
82
-	if (mr->stats.prob_ewma < MINSTREL_FRAC(10, 100))
82
+	if (mr->stats.prob_avg < MINSTREL_FRAC(10, 100))
83
83
 		return 0;
84
84
 
85
-	if (prob_ewma > MINSTREL_FRAC(90, 100))
85
+	if (prob_avg > MINSTREL_FRAC(90, 100))
86
86
 		return MINSTREL_TRUNC(100000 * (MINSTREL_FRAC(90, 100) / usecs));
87
87
 	else
88
-		return MINSTREL_TRUNC(100000 * (prob_ewma / usecs));
88
+		return MINSTREL_TRUNC(100000 * (prob_avg / usecs));
89
89
 }
90
90
 
91
91
 /* find & sort topmost throughput rates */
..
..
@@ -98,8 +98,8 @@
98
98
 
99
99
 	for (j = MAX_THR_RATES; j > 0; --j) {
100
100
 		tmp_mrs = &mi->r[tp_list[j - 1]].stats;
101
-		if (minstrel_get_tp_avg(&mi->r[i], cur_mrs->prob_ewma) <=
102
-		    minstrel_get_tp_avg(&mi->r[tp_list[j - 1]], tmp_mrs->prob_ewma))
101
+		if (minstrel_get_tp_avg(&mi->r[i], cur_mrs->prob_avg) <=
102
+		    minstrel_get_tp_avg(&mi->r[tp_list[j - 1]], tmp_mrs->prob_avg))
103
103
 			break;
104
104
 	}
105
105
 
..
..
@@ -157,26 +157,24 @@
157
157
 * Recalculate statistics and counters of a given rate
158
158
 */
159
159
 void
160
-minstrel_calc_rate_stats(struct minstrel_rate_stats *mrs)
160
+minstrel_calc_rate_stats(struct minstrel_priv *mp,
161
+			 struct minstrel_rate_stats *mrs)
161
162
 {
162
163
 	unsigned int cur_prob;
163
164
 
164
165
 	if (unlikely(mrs->attempts > 0)) {
165
166
 		mrs->sample_skipped = 0;
166
167
 		cur_prob = MINSTREL_FRAC(mrs->success, mrs->attempts);
167
-		if (unlikely(!mrs->att_hist)) {
168
-			mrs->prob_ewma = cur_prob;
168
+		if (mp->new_avg) {
169
+			minstrel_filter_avg_add(&mrs->prob_avg,
170
+						&mrs->prob_avg_1, cur_prob);
171
+		} else if (unlikely(!mrs->att_hist)) {
172
+			mrs->prob_avg = cur_prob;
169
173
 		} else {
170
-			/* update exponential weighted moving variance */
171
-			mrs->prob_ewmv = minstrel_ewmv(mrs->prob_ewmv,
172
-							cur_prob,
173
-							mrs->prob_ewma,
174
-							EWMA_LEVEL);
175
-
176
174
 			/*update exponential weighted moving avarage */
177
-			mrs->prob_ewma = minstrel_ewma(mrs->prob_ewma,
178
-						       cur_prob,
179
-						       EWMA_LEVEL);
175
+			mrs->prob_avg = minstrel_ewma(mrs->prob_avg,
176
+						      cur_prob,
177
+						      EWMA_LEVEL);
180
178
 		}
181
179
 		mrs->att_hist += mrs->attempts;
182
180
 		mrs->succ_hist += mrs->success;
..
..
@@ -206,12 +204,12 @@
206
204
 		struct minstrel_rate_stats *tmp_mrs = &mi->r[tmp_prob_rate].stats;
207
205
 
208
206
 		/* Update statistics of success probability per rate */
209
-		minstrel_calc_rate_stats(mrs);
207
+		minstrel_calc_rate_stats(mp, mrs);
210
208
 
211
209
 		/* Sample less often below the 10% chance of success.
212
210
 		 * Sample less often above the 95% chance of success. */
213
-		if (mrs->prob_ewma > MINSTREL_FRAC(95, 100) ||
214
-		    mrs->prob_ewma < MINSTREL_FRAC(10, 100)) {
211
+		if (mrs->prob_avg > MINSTREL_FRAC(95, 100) ||
212
+		    mrs->prob_avg < MINSTREL_FRAC(10, 100)) {
215
213
 			mr->adjusted_retry_count = mrs->retry_count >> 1;
216
214
 			if (mr->adjusted_retry_count > 2)
217
215
 				mr->adjusted_retry_count = 2;
..
..
@@ -231,14 +229,14 @@
231
229
 		 * choose the maximum throughput rate as max_prob_rate
232
230
 		 * (2) if all success probabilities < 95%, the rate with
233
231
 		 * highest success probability is chosen as max_prob_rate */
234
-		if (mrs->prob_ewma >= MINSTREL_FRAC(95, 100)) {
235
-			tmp_cur_tp = minstrel_get_tp_avg(mr, mrs->prob_ewma);
232
+		if (mrs->prob_avg >= MINSTREL_FRAC(95, 100)) {
233
+			tmp_cur_tp = minstrel_get_tp_avg(mr, mrs->prob_avg);
236
234
 			tmp_prob_tp = minstrel_get_tp_avg(&mi->r[tmp_prob_rate],
237
-							  tmp_mrs->prob_ewma);
235
+							  tmp_mrs->prob_avg);
238
236
 			if (tmp_cur_tp >= tmp_prob_tp)
239
237
 				tmp_prob_rate = i;
240
238
 		} else {
241
-			if (mrs->prob_ewma >= tmp_mrs->prob_ewma)
239
+			if (mrs->prob_avg >= tmp_mrs->prob_avg)
242
240
 				tmp_prob_rate = i;
243
241
 		}
244
242
 	}
..
..
@@ -290,7 +288,7 @@
290
288
 	}
291
289
 
292
290
 	if (time_after(jiffies, mi->last_stats_update +
293
-				(mp->update_interval * HZ) / 1000))
291
+				mp->update_interval / (mp->new_avg ? 2 : 1)))
294
292
 		minstrel_update_stats(mp, mi);
295
293
 }
296
294
 
..
..
@@ -339,10 +337,6 @@
339
337
 	bool prev_sample;
340
338
 	int delta;
341
339
 	int sampling_ratio;
342
-
343
-	/* management/no-ack frames do not use rate control */
344
-	if (rate_control_send_low(sta, priv_sta, txrc))
345
-		return;
346
340
 
347
341
 	/* check multi-rate-retry capabilities & adjust lookaround_rate */
348
342
 	mrr_capable = mp->has_mrr &&
..
..
@@ -414,7 +408,7 @@
414
408
 	 * has a probability of >95%, we shouldn't be attempting
415
409
 	 * to use it, as this only wastes precious airtime */
416
410
 	if (!mrr_capable &&
417
-	   (mi->r[ndx].stats.prob_ewma > MINSTREL_FRAC(95, 100)))
411
+	   (mi->r[ndx].stats.prob_avg > MINSTREL_FRAC(95, 100)))
418
412
 		return;
419
413
 
420
414
 	mi->prev_sample = true;
..
..
@@ -555,141 +549,6 @@
555
549
 	minstrel_update_rates(mp, mi);
556
550
 }
557
551
 
558
-static void *
559
-minstrel_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
560
-{
561
-	struct ieee80211_supported_band *sband;
562
-	struct minstrel_sta_info *mi;
563
-	struct minstrel_priv *mp = priv;
564
-	struct ieee80211_hw *hw = mp->hw;
565
-	int max_rates = 0;
566
-	int i;
567
-
568
-	mi = kzalloc(sizeof(struct minstrel_sta_info), gfp);
569
-	if (!mi)
570
-		return NULL;
571
-
572
-	for (i = 0; i < NUM_NL80211_BANDS; i++) {
573
-		sband = hw->wiphy->bands[i];
574
-		if (sband && sband->n_bitrates > max_rates)
575
-			max_rates = sband->n_bitrates;
576
-	}
577
-
578
-	mi->r = kcalloc(max_rates, sizeof(struct minstrel_rate), gfp);
579
-	if (!mi->r)
580
-		goto error;
581
-
582
-	mi->sample_table = kmalloc_array(max_rates, SAMPLE_COLUMNS, gfp);
583
-	if (!mi->sample_table)
584
-		goto error1;
585
-
586
-	mi->last_stats_update = jiffies;
587
-	return mi;
588
-
589
-error1:
590
-	kfree(mi->r);
591
-error:
592
-	kfree(mi);
593
-	return NULL;
594
-}
595
-
596
-static void
597
-minstrel_free_sta(void *priv, struct ieee80211_sta *sta, void *priv_sta)
598
-{
599
-	struct minstrel_sta_info *mi = priv_sta;
600
-
601
-	kfree(mi->sample_table);
602
-	kfree(mi->r);
603
-	kfree(mi);
604
-}
605
-
606
-static void
607
-minstrel_init_cck_rates(struct minstrel_priv *mp)
608
-{
609
-	static const int bitrates[4] = { 10, 20, 55, 110 };
610
-	struct ieee80211_supported_band *sband;
611
-	u32 rate_flags = ieee80211_chandef_rate_flags(&mp->hw->conf.chandef);
612
-	int i, j;
613
-
614
-	sband = mp->hw->wiphy->bands[NL80211_BAND_2GHZ];
615
-	if (!sband)
616
-		return;
617
-
618
-	for (i = 0, j = 0; i < sband->n_bitrates; i++) {
619
-		struct ieee80211_rate *rate = &sband->bitrates[i];
620
-
621
-		if (rate->flags & IEEE80211_RATE_ERP_G)
622
-			continue;
623
-
624
-		if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
625
-			continue;
626
-
627
-		for (j = 0; j < ARRAY_SIZE(bitrates); j++) {
628
-			if (rate->bitrate != bitrates[j])
629
-				continue;
630
-
631
-			mp->cck_rates[j] = i;
632
-			break;
633
-		}
634
-	}
635
-}
636
-
637
-static void *
638
-minstrel_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
639
-{
640
-	struct minstrel_priv *mp;
641
-
642
-	mp = kzalloc(sizeof(struct minstrel_priv), GFP_ATOMIC);
643
-	if (!mp)
644
-		return NULL;
645
-
646
-	/* contention window settings
647
-	 * Just an approximation. Using the per-queue values would complicate
648
-	 * the calculations and is probably unnecessary */
649
-	mp->cw_min = 15;
650
-	mp->cw_max = 1023;
651
-
652
-	/* number of packets (in %) to use for sampling other rates
653
-	 * sample less often for non-mrr packets, because the overhead
654
-	 * is much higher than with mrr */
655
-	mp->lookaround_rate = 5;
656
-	mp->lookaround_rate_mrr = 10;
657
-
658
-	/* maximum time that the hw is allowed to stay in one MRR segment */
659
-	mp->segment_size = 6000;
660
-
661
-	if (hw->max_rate_tries > 0)
662
-		mp->max_retry = hw->max_rate_tries;
663
-	else
664
-		/* safe default, does not necessarily have to match hw properties */
665
-		mp->max_retry = 7;
666
-
667
-	if (hw->max_rates >= 4)
668
-		mp->has_mrr = true;
669
-
670
-	mp->hw = hw;
671
-	mp->update_interval = 100;
672
-
673
-#ifdef CONFIG_MAC80211_DEBUGFS
674
-	mp->fixed_rate_idx = (u32) -1;
675
-	mp->dbg_fixed_rate = debugfs_create_u32("fixed_rate_idx",
676
-			0666, debugfsdir, &mp->fixed_rate_idx);
677
-#endif
678
-
679
-	minstrel_init_cck_rates(mp);
680
-
681
-	return mp;
682
-}
683
-
684
-static void
685
-minstrel_free(void *priv)
686
-{
687
-#ifdef CONFIG_MAC80211_DEBUGFS
688
-	debugfs_remove(((struct minstrel_priv *)priv)->dbg_fixed_rate);
689
-#endif
690
-	kfree(priv);
691
-}
692
-
693
552
 static u32 minstrel_get_expected_throughput(void *priv_sta)
694
553
 {
695
554
 	struct minstrel_sta_info *mi = priv_sta;
..
..
@@ -701,36 +560,15 @@
701
560
 	 * computing cur_tp
702
561
 	 */
703
562
 	tmp_mrs = &mi->r[idx].stats;
704
-	tmp_cur_tp = minstrel_get_tp_avg(&mi->r[idx], tmp_mrs->prob_ewma) * 10;
563
+	tmp_cur_tp = minstrel_get_tp_avg(&mi->r[idx], tmp_mrs->prob_avg) * 10;
705
564
 	tmp_cur_tp = tmp_cur_tp * 1200 * 8 / 1024;
706
565
 
707
566
 	return tmp_cur_tp;
708
567
 }
709
568
 
710
569
 const struct rate_control_ops mac80211_minstrel = {
711
-	.name = "minstrel",
712
570
 	.tx_status_ext = minstrel_tx_status,
713
571
 	.get_rate = minstrel_get_rate,
714
572
 	.rate_init = minstrel_rate_init,
715
-	.alloc = minstrel_alloc,
716
-	.free = minstrel_free,
717
-	.alloc_sta = minstrel_alloc_sta,
718
-	.free_sta = minstrel_free_sta,
719
-#ifdef CONFIG_MAC80211_DEBUGFS
720
-	.add_sta_debugfs = minstrel_add_sta_debugfs,
721
-	.remove_sta_debugfs = minstrel_remove_sta_debugfs,
722
-#endif
723
573
 	.get_expected_throughput = minstrel_get_expected_throughput,
724
574
 };
725
-
726
-int __init
727
-rc80211_minstrel_init(void)
728
-{
729
-	return ieee80211_rate_control_register(&mac80211_minstrel);
730
-}
731
-
732
-void
733
-rc80211_minstrel_exit(void)
734
-{
735
-	ieee80211_rate_control_unregister(&mac80211_minstrel);
736
-}