mac80211: minstrel: merge with minstrel_ht, always enable VHT support

Legacy-only devices are not very common and the overhead of the extra
code for HT and VHT rates is not big enough to justify all those extra
lines of code to make it optional.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 0 insertions, 152 deletions

diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c
index eac61242238a..dead57ba9eac 100644
--- a/net/mac80211/rc80211_minstrel.c
+++ b/net/mac80211/rc80211_minstrel.c
@@ -572,138 +572,6 @@ minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband,
 	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; 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;
-	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)
-{
-	kfree(priv);
-}
-
 static u32 minstrel_get_expected_throughput(void *priv_sta)
 {
 	struct minstrel_sta_info *mi = priv_sta;
@@ -722,28 +590,8 @@ static u32 minstrel_get_expected_throughput(void *priv_sta)
 }
 
 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,
-#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);
-}