mac80211: reorder patches putting backports first

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 576 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/371-mac80211-minstrel-merge-with-minstrel_ht-always-enab.patch b/package/kernel/mac80211/patches/371-mac80211-minstrel-merge-with-minstrel_ht-always-enab.patch
new file mode 100644
index 0000000..a2bdfd8
--- /dev/null
+++ b/package/kernel/mac80211/patches/371-mac80211-minstrel-merge-with-minstrel_ht-always-enab.patch
@@ -0,0 +1,576 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sat, 10 Feb 2018 12:43:30 +0100
+Subject: [PATCH] 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>
+---
+
+--- a/net/mac80211/Kconfig
++++ b/net/mac80211/Kconfig
+@@ -25,20 +25,6 @@ config MAC80211_RC_MINSTREL
+ 	---help---
+ 	  This option enables the 'minstrel' TX rate control algorithm
+ 
+-config MAC80211_RC_MINSTREL_HT
+-	bool "Minstrel 802.11n support" if EXPERT
+-	depends on MAC80211_RC_MINSTREL
+-	default y
+-	---help---
+-	  This option enables the 'minstrel_ht' TX rate control algorithm
+-
+-config MAC80211_RC_MINSTREL_VHT
+-	bool "Minstrel 802.11ac support" if EXPERT
+-	depends on MAC80211_RC_MINSTREL_HT
+-	default n
+-	---help---
+-	  This option enables VHT in the 'minstrel_ht' TX rate control algorithm
+-
+ choice
+ 	prompt "Default rate control algorithm"
+ 	depends on MAC80211_HAS_RC
+@@ -60,8 +46,7 @@ endchoice
+ 
+ config MAC80211_RC_DEFAULT
+ 	string
+-	default "minstrel_ht" if MAC80211_RC_DEFAULT_MINSTREL && MAC80211_RC_MINSTREL_HT
+-	default "minstrel" if MAC80211_RC_DEFAULT_MINSTREL
++	default "minstrel_ht" if MAC80211_RC_DEFAULT_MINSTREL
+ 	default ""
+ 
+ endif
+--- a/net/mac80211/Makefile
++++ b/net/mac80211/Makefile
+@@ -50,13 +50,14 @@ mac80211-$(CONFIG_PM) += pm.o
+ 
+ CFLAGS_trace.o := -I$(src)
+ 
+-rc80211_minstrel-y := rc80211_minstrel.o
+-rc80211_minstrel-$(CPTCFG_MAC80211_DEBUGFS) += rc80211_minstrel_debugfs.o
++rc80211_minstrel-y := \
++	rc80211_minstrel.o \
++	rc80211_minstrel_ht.o
+ 
+-rc80211_minstrel_ht-y := rc80211_minstrel_ht.o
+-rc80211_minstrel_ht-$(CPTCFG_MAC80211_DEBUGFS) += rc80211_minstrel_ht_debugfs.o
++rc80211_minstrel-$(CPTCFG_MAC80211_DEBUGFS) += \
++	rc80211_minstrel_debugfs.o \
++	rc80211_minstrel_ht_debugfs.o
+ 
+ mac80211-$(CPTCFG_MAC80211_RC_MINSTREL) += $(rc80211_minstrel-y)
+-mac80211-$(CPTCFG_MAC80211_RC_MINSTREL_HT) += $(rc80211_minstrel_ht-y)
+ 
+ ccflags-y += -DDEBUG
+--- a/net/mac80211/main.c
++++ b/net/mac80211/main.c
+@@ -1252,18 +1252,12 @@ static int __init ieee80211_init(void)
+ 	if (ret)
+ 		return ret;
+ 
+-	ret = rc80211_minstrel_ht_init();
+-	if (ret)
+-		goto err_minstrel;
+-
+ 	ret = ieee80211_iface_init();
+ 	if (ret)
+ 		goto err_netdev;
+ 
+ 	return 0;
+  err_netdev:
+-	rc80211_minstrel_ht_exit();
+- err_minstrel:
+ 	rc80211_minstrel_exit();
+ 
+ 	return ret;
+@@ -1271,7 +1265,6 @@ static int __init ieee80211_init(void)
+ 
+ static void __exit ieee80211_exit(void)
+ {
+-	rc80211_minstrel_ht_exit();
+ 	rc80211_minstrel_exit();
+ 
+ 	ieee80211s_stop();
+--- a/net/mac80211/rate.h
++++ b/net/mac80211/rate.h
+@@ -95,18 +95,5 @@ static inline void rc80211_minstrel_exit
+ }
+ #endif
+ 
+-#ifdef CPTCFG_MAC80211_RC_MINSTREL_HT
+-int rc80211_minstrel_ht_init(void);
+-void rc80211_minstrel_ht_exit(void);
+-#else
+-static inline int rc80211_minstrel_ht_init(void)
+-{
+-	return 0;
+-}
+-static inline void rc80211_minstrel_ht_exit(void)
+-{
+-}
+-#endif
+-
+ 
+ #endif /* IEEE80211_RATE_H */
+--- a/net/mac80211/rc80211_minstrel.c
++++ b/net/mac80211/rc80211_minstrel.c
+@@ -572,138 +572,6 @@ minstrel_rate_init(void *priv, struct ie
+ 	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 = kzalloc(sizeof(struct minstrel_rate) * max_rates, gfp);
+-	if (!mi->r)
+-		goto error;
+-
+-	mi->sample_table = kmalloc(SAMPLE_COLUMNS * max_rates, 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 CPTCFG_MAC80211_DEBUGFS
+-	mp->fixed_rate_idx = (u32) -1;
+-	debugfs_create_u32("fixed_rate_idx", S_IRUGO | S_IWUGO, 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;
+@@ -722,29 +590,8 @@ static u32 minstrel_get_expected_through
+ }
+ 
+ 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 CPTCFG_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);
+-}
+-
+--- a/net/mac80211/rc80211_minstrel.h
++++ b/net/mac80211/rc80211_minstrel.h
+@@ -158,7 +158,5 @@ int minstrel_get_tp_avg(struct minstrel_
+ /* debugfs */
+ int minstrel_stats_open(struct inode *inode, struct file *file);
+ int minstrel_stats_csv_open(struct inode *inode, struct file *file);
+-ssize_t minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos);
+-int minstrel_stats_release(struct inode *inode, struct file *file);
+ 
+ #endif
+--- a/net/mac80211/rc80211_minstrel_debugfs.c
++++ b/net/mac80211/rc80211_minstrel_debugfs.c
+@@ -54,22 +54,6 @@
+ #include <net/mac80211.h>
+ #include "rc80211_minstrel.h"
+ 
+-ssize_t
+-minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos)
+-{
+-	struct minstrel_debugfs_info *ms;
+-
+-	ms = file->private_data;
+-	return simple_read_from_buffer(buf, len, ppos, ms->buf, ms->len);
+-}
+-
+-int
+-minstrel_stats_release(struct inode *inode, struct file *file)
+-{
+-	kfree(file->private_data);
+-	return 0;
+-}
+-
+ int
+ minstrel_stats_open(struct inode *inode, struct file *file)
+ {
+@@ -135,14 +119,6 @@ minstrel_stats_open(struct inode *inode,
+ 	return 0;
+ }
+ 
+-static const struct file_operations minstrel_stat_fops = {
+-	.owner = THIS_MODULE,
+-	.open = minstrel_stats_open,
+-	.read = minstrel_stats_read,
+-	.release = minstrel_stats_release,
+-	.llseek = default_llseek,
+-};
+-
+ int
+ minstrel_stats_csv_open(struct inode *inode, struct file *file)
+ {
+@@ -200,21 +176,3 @@ minstrel_stats_csv_open(struct inode *in
+ 
+ 	return 0;
+ }
+-
+-static const struct file_operations minstrel_stat_csv_fops = {
+-	.owner = THIS_MODULE,
+-	.open = minstrel_stats_csv_open,
+-	.read = minstrel_stats_read,
+-	.release = minstrel_stats_release,
+-	.llseek = default_llseek,
+-};
+-
+-void
+-minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir)
+-{
+-	struct minstrel_sta_info *mi = priv_sta;
+-
+-	debugfs_create_file("rc_stats", S_IRUGO, dir, mi, &minstrel_stat_fops);
+-	debugfs_create_file("rc_stats_csv", S_IRUGO, dir, mi,
+-			    &minstrel_stat_csv_fops);
+-}
+--- a/net/mac80211/rc80211_minstrel_ht.c
++++ b/net/mac80211/rc80211_minstrel_ht.c
+@@ -137,12 +137,10 @@
+ 		}					\
+ 	}
+ 
+-#ifdef CPTCFG_MAC80211_RC_MINSTREL_VHT
+ static bool minstrel_vht_only = true;
+ module_param(minstrel_vht_only, bool, 0644);
+ MODULE_PARM_DESC(minstrel_vht_only,
+ 		 "Use only VHT rates when VHT is supported by sta.");
+-#endif
+ 
+ /*
+  * To enable sufficiently targeted rate sampling, MCS rates are divided into
+@@ -171,7 +169,6 @@ const struct mcs_group minstrel_mcs_grou
+ 
+ 	CCK_GROUP,
+ 
+-#ifdef CPTCFG_MAC80211_RC_MINSTREL_VHT
+ 	VHT_GROUP(1, 0, BW_20),
+ 	VHT_GROUP(2, 0, BW_20),
+ 	VHT_GROUP(3, 0, BW_20),
+@@ -195,7 +192,6 @@ const struct mcs_group minstrel_mcs_grou
+ 	VHT_GROUP(1, 1, BW_80),
+ 	VHT_GROUP(2, 1, BW_80),
+ 	VHT_GROUP(3, 1, BW_80),
+-#endif
+ };
+ 
+ static u8 sample_table[SAMPLE_COLUMNS][MCS_GROUP_RATES] __read_mostly;
+@@ -1146,12 +1142,10 @@ minstrel_ht_update_caps(void *priv, stru
+ 
+ 	BUILD_BUG_ON(ARRAY_SIZE(minstrel_mcs_groups) != MINSTREL_GROUPS_NB);
+ 
+-#ifdef CPTCFG_MAC80211_RC_MINSTREL_VHT
+ 	if (vht_cap->vht_supported)
+ 		use_vht = vht_cap->vht_mcs.tx_mcs_map != cpu_to_le16(~0);
+ 	else
+-#endif
+-	use_vht = 0;
++		use_vht = 0;
+ 
+ 	msp->is_ht = true;
+ 	memset(mi, 0, sizeof(*mi));
+@@ -1226,10 +1220,9 @@ minstrel_ht_update_caps(void *priv, stru
+ 
+ 		/* HT rate */
+ 		if (gflags & IEEE80211_TX_RC_MCS) {
+-#ifdef CPTCFG_MAC80211_RC_MINSTREL_VHT
+ 			if (use_vht && minstrel_vht_only)
+ 				continue;
+-#endif
++
+ 			mi->supported[i] = mcs->rx_mask[nss - 1];
+ 			if (mi->supported[i])
+ 				n_supported++;
+@@ -1349,16 +1342,88 @@ minstrel_ht_free_sta(void *priv, struct
+ 	kfree(msp);
+ }
+ 
++static void
++minstrel_ht_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_ht_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
+ {
+-	return mac80211_minstrel.alloc(hw, 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 CPTCFG_MAC80211_DEBUGFS
++	mp->fixed_rate_idx = (u32) -1;
++	debugfs_create_u32("fixed_rate_idx", S_IRUGO | S_IWUGO, debugfsdir,
++			   &mp->fixed_rate_idx);
++#endif
++
++	minstrel_ht_init_cck_rates(mp);
++
++	return mp;
+ }
+ 
+ static void
+ minstrel_ht_free(void *priv)
+ {
+-	mac80211_minstrel.free(priv);
++	kfree(priv);
+ }
+ 
+ static u32 minstrel_ht_get_expected_throughput(void *priv_sta)
+@@ -1417,14 +1482,14 @@ static void __init init_sample_table(voi
+ }
+ 
+ int __init
+-rc80211_minstrel_ht_init(void)
++rc80211_minstrel_init(void)
+ {
+ 	init_sample_table();
+ 	return ieee80211_rate_control_register(&mac80211_minstrel_ht);
+ }
+ 
+ void
+-rc80211_minstrel_ht_exit(void)
++rc80211_minstrel_exit(void)
+ {
+ 	ieee80211_rate_control_unregister(&mac80211_minstrel_ht);
+ }
+--- a/net/mac80211/rc80211_minstrel_ht.h
++++ b/net/mac80211/rc80211_minstrel_ht.h
+@@ -15,11 +15,7 @@
+  */
+ #define MINSTREL_MAX_STREAMS		3
+ #define MINSTREL_HT_STREAM_GROUPS	4 /* BW(=2) * SGI(=2) */
+-#ifdef CPTCFG_MAC80211_RC_MINSTREL_VHT
+ #define MINSTREL_VHT_STREAM_GROUPS	6 /* BW(=3) * SGI(=2) */
+-#else
+-#define MINSTREL_VHT_STREAM_GROUPS	0
+-#endif
+ 
+ #define MINSTREL_HT_GROUPS_NB	(MINSTREL_MAX_STREAMS *		\
+ 				 MINSTREL_HT_STREAM_GROUPS)
+@@ -34,11 +30,7 @@
+ #define MINSTREL_CCK_GROUP	(MINSTREL_HT_GROUP_0 + MINSTREL_HT_GROUPS_NB)
+ #define MINSTREL_VHT_GROUP_0	(MINSTREL_CCK_GROUP + 1)
+ 
+-#ifdef CPTCFG_MAC80211_RC_MINSTREL_VHT
+ #define MCS_GROUP_RATES		10
+-#else
+-#define MCS_GROUP_RATES		8
+-#endif
+ 
+ struct mcs_group {
+ 	u32 flags;
+--- a/net/mac80211/rc80211_minstrel_ht_debugfs.c
++++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c
+@@ -15,6 +15,22 @@
+ #include "rc80211_minstrel.h"
+ #include "rc80211_minstrel_ht.h"
+ 
++static ssize_t
++minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos)
++{
++	struct minstrel_debugfs_info *ms;
++
++	ms = file->private_data;
++	return simple_read_from_buffer(buf, len, ppos, ms->buf, ms->len);
++}
++
++static int
++minstrel_stats_release(struct inode *inode, struct file *file)
++{
++	kfree(file->private_data);
++	return 0;
++}
++
+ static char *
+ minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
+ {