diff options
Diffstat (limited to 'package/kernel/mac80211/patches/subsys/371-mac80211-minstrel-merge-with-minstrel_ht-always-enab.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/subsys/371-mac80211-minstrel-merge-with-minstrel_ht-always-enab.patch | 596 |
1 files changed, 596 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/subsys/371-mac80211-minstrel-merge-with-minstrel_ht-always-enab.patch b/package/kernel/mac80211/patches/subsys/371-mac80211-minstrel-merge-with-minstrel_ht-always-enab.patch new file mode 100644 index 0000000000..1c36a070ca --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/371-mac80211-minstrel-merge-with-minstrel_ht-always-enab.patch @@ -0,0 +1,596 @@ +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> +--- + +Index: backports-v4.18-rc7/net/mac80211/Kconfig +=================================================================== +--- backports-v4.18-rc7.orig/net/mac80211/Kconfig ++++ backports-v4.18-rc7/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 +Index: backports-v4.18-rc7/net/mac80211/Makefile +=================================================================== +--- backports-v4.18-rc7.orig/net/mac80211/Makefile ++++ backports-v4.18-rc7/net/mac80211/Makefile +@@ -51,13 +51,14 @@ 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 +Index: backports-v4.18-rc7/net/mac80211/main.c +=================================================================== +--- backports-v4.18-rc7.orig/net/mac80211/main.c ++++ backports-v4.18-rc7/net/mac80211/main.c +@@ -1264,18 +1264,12 @@ 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; +@@ -1283,7 +1277,6 @@ static int __init ieee80211_init(void) + + static void __exit ieee80211_exit(void) + { +- rc80211_minstrel_ht_exit(); + rc80211_minstrel_exit(); + + ieee80211s_stop(); +Index: backports-v4.18-rc7/net/mac80211/rate.h +=================================================================== +--- backports-v4.18-rc7.orig/net/mac80211/rate.h ++++ backports-v4.18-rc7/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 */ +Index: backports-v4.18-rc7/net/mac80211/rc80211_minstrel.c +=================================================================== +--- backports-v4.18-rc7.orig/net/mac80211/rc80211_minstrel.c ++++ backports-v4.18-rc7/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 = 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 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); +-} +- +Index: backports-v4.18-rc7/net/mac80211/rc80211_minstrel.h +=================================================================== +--- backports-v4.18-rc7.orig/net/mac80211/rc80211_minstrel.h ++++ backports-v4.18-rc7/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 +Index: backports-v4.18-rc7/net/mac80211/rc80211_minstrel_debugfs.c +=================================================================== +--- backports-v4.18-rc7.orig/net/mac80211/rc80211_minstrel_debugfs.c ++++ backports-v4.18-rc7/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); +-} +Index: backports-v4.18-rc7/net/mac80211/rc80211_minstrel_ht.c +=================================================================== +--- backports-v4.18-rc7.orig/net/mac80211/rc80211_minstrel_ht.c ++++ backports-v4.18-rc7/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); + } +Index: backports-v4.18-rc7/net/mac80211/rc80211_minstrel_ht.h +=================================================================== +--- backports-v4.18-rc7.orig/net/mac80211/rc80211_minstrel_ht.h ++++ backports-v4.18-rc7/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; +Index: backports-v4.18-rc7/net/mac80211/rc80211_minstrel_ht_debugfs.c +=================================================================== +--- backports-v4.18-rc7.orig/net/mac80211/rc80211_minstrel_ht_debugfs.c ++++ backports-v4.18-rc7/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) + { |