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-rw-r--r--package/mac80211/Makefile21
-rw-r--r--package/mac80211/patches-old/001-disable_drivers.patch (renamed from package/mac80211/patches/001-disable_drivers.patch)0
-rw-r--r--package/mac80211/patches-old/004-allow-ap-vlan-modes.patch (renamed from package/mac80211/patches/004-allow-ap-vlan-modes.patch)0
-rw-r--r--package/mac80211/patches/000-kconfig.patch201
-rw-r--r--package/mac80211/patches/100-define.patch14
-rw-r--r--package/mac80211/patches/110-ath5k_stat.patch53
-rw-r--r--package/mac80211/patches/200-hwkey_len.patch183
-rw-r--r--package/mac80211/patches/210-mrr.patch183
-rw-r--r--package/mac80211/patches/250-ath5k_mrr.patch208
-rw-r--r--package/mac80211/patches/299-compat_minstrel.patch32
-rw-r--r--package/mac80211/patches/300-minstrel.patch928
11 files changed, 1818 insertions, 5 deletions
diff --git a/package/mac80211/Makefile b/package/mac80211/Makefile
index a3b483c..cd1feed 100644
--- a/package/mac80211/Makefile
+++ b/package/mac80211/Makefile
@@ -12,9 +12,16 @@ include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=mac80211
PKG_RELEASE:=1
-PKG_VERSION:=2008-08-06
+ifneq ($(CONFIG_LINUX_2_6_27),)
+ PKG_VERSION:=2008-09-28
+ PKG_SOURCE_URL:=http://www.orbit-lab.org/kernel/compat-wireless-2.6/2008/09
+else
+ PKG_VERSION:=2008-08-06
+ PKG_SOURCE_URL:=http://www.orbit-lab.org/kernel/compat-wireless-2.6/2008/08
+ PATCH_DIR:=./patches-old
+endif
+
PKG_SOURCE:=compat-wireless-$(PKG_VERSION).tar.bz2
-PKG_SOURCE_URL:=http://www.orbit-lab.org/kernel/compat-wireless-2.6/2008/08/
PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/compat-wireless-$(PKG_VERSION)
include $(INCLUDE_DIR)/package.mk
@@ -137,9 +144,11 @@ define KernelPackage/ath5k
endef
BUILDFLAGS:= \
+ -I$(PKG_BUILD_DIR)/include \
$(foreach opt,$(CONFOPTS),-DCONFIG_$(opt)) \
$(if $(CONFIG_LEDS_TRIGGERS), -DCONFIG_MAC80211_LEDS -DCONFIG_LEDS_TRIGGERS) \
- -D__CONFIG_MAC80211_RC_DEFAULT=pid \
+ $(if $(CONFIG_DEBUG_FS), -DCONFIG_MAC80211_DEBUGFS) \
+ -D__CONFIG_MAC80211_RC_DEFAULT=minstrel \
MAKE_OPTS:= \
CROSS_COMPILE="$(TARGET_CROSS)" \
@@ -148,9 +157,11 @@ MAKE_OPTS:= \
$(foreach opt,$(CONFOPTS),CONFIG_$(opt)=m) \
CONFIG_NL80211=y \
CONFIG_MAC80211_RC_PID=y \
+ CONFIG_MAC80211_RC_MINSTREL=y \
CONFIG_MAC80211_LEDS=$(CONFIG_LEDS_TRIGGERS) \
- LINUXINCLUDE="-I$(PKG_BUILD_DIR)/include -I$(LINUX_DIR)/include -include linux/autoconf.h" \
+ CONFIG_MAC80211_DEBUGFS=$(CONFIG_DEBUG_FS) \
KLIB_BUILD="$(LINUX_DIR)" \
+ MODPROBE=:
define Build/Prepare
rm -rf $(PKG_BUILD_DIR)
@@ -160,7 +171,7 @@ define Build/Prepare
$(if $(QUILT),touch $(PKG_BUILD_DIR)/.quilt_used)
unzip -jod $(PKG_BUILD_DIR) $(DL_DIR)/$(RT61FW)
unzip -jod $(PKG_BUILD_DIR) $(DL_DIR)/$(RT71FW)
- rm -rf $(PKG_BUILD_DIR)/include/linux/ssb
+ $(if $(CONFIG_TARGET_brcm47xx),rm -rf $(PKG_BUILD_DIR)/include/linux/ssb)
endef
ifneq ($(CONFIG_PACKAGE_kmod-mac80211),)
diff --git a/package/mac80211/patches/001-disable_drivers.patch b/package/mac80211/patches-old/001-disable_drivers.patch
index ccf0409..ccf0409 100644
--- a/package/mac80211/patches/001-disable_drivers.patch
+++ b/package/mac80211/patches-old/001-disable_drivers.patch
diff --git a/package/mac80211/patches/004-allow-ap-vlan-modes.patch b/package/mac80211/patches-old/004-allow-ap-vlan-modes.patch
index a8080b2..a8080b2 100644
--- a/package/mac80211/patches/004-allow-ap-vlan-modes.patch
+++ b/package/mac80211/patches-old/004-allow-ap-vlan-modes.patch
diff --git a/package/mac80211/patches/000-kconfig.patch b/package/mac80211/patches/000-kconfig.patch
new file mode 100644
index 0000000..bcbf886
--- /dev/null
+++ b/package/mac80211/patches/000-kconfig.patch
@@ -0,0 +1,201 @@
+--- /dev/null
++++ b/net/mac80211/Kconfig
+@@ -0,0 +1,198 @@
++config MAC80211
++ tristate "Generic IEEE 802.11 Networking Stack (mac80211)"
++ select CRYPTO
++ select CRYPTO_ECB
++ select CRYPTO_ARC4
++ select CRYPTO_AES
++ select CRC32
++ select WIRELESS_EXT
++ select CFG80211
++ ---help---
++ This option enables the hardware independent IEEE 802.11
++ networking stack.
++
++menu "Rate control algorithm selection"
++ depends on MAC80211 != n
++
++config MAC80211_RC_PID
++ bool "PID controller based rate control algorithm" if EMBEDDED
++ default y
++ ---help---
++ This option enables a TX rate control algorithm for
++ mac80211 that uses a PID controller to select the TX
++ rate.
++
++choice
++ prompt "Default rate control algorithm"
++ default MAC80211_RC_DEFAULT_PID
++ ---help---
++ This option selects the default rate control algorithm
++ mac80211 will use. Note that this default can still be
++ overriden through the ieee80211_default_rc_algo module
++ parameter if different algorithms are available.
++
++config MAC80211_RC_DEFAULT_PID
++ bool "PID controller based rate control algorithm"
++ depends on MAC80211_RC_PID
++ ---help---
++ Select the PID controller based rate control as the
++ default rate control algorithm. You should choose
++ this unless you know what you are doing.
++
++endchoice
++
++config MAC80211_RC_DEFAULT
++ string
++ default "pid" if MAC80211_RC_DEFAULT_PID
++ default ""
++
++endmenu
++
++config MAC80211_MESH
++ bool "Enable mac80211 mesh networking (pre-802.11s) support"
++ depends on MAC80211 && EXPERIMENTAL
++ ---help---
++ This options enables support of Draft 802.11s mesh networking.
++ The implementation is based on Draft 1.08 of the Mesh Networking
++ amendment. For more information visit http://o11s.org/.
++
++
++config MAC80211_LEDS
++ bool "Enable LED triggers"
++ depends on MAC80211
++ select NEW_LEDS
++ select LEDS_TRIGGERS
++ ---help---
++ This option enables a few LED triggers for different
++ packet receive/transmit events.
++
++config MAC80211_DEBUGFS
++ bool "Export mac80211 internals in DebugFS"
++ depends on MAC80211 && DEBUG_FS
++ ---help---
++ Select this to see extensive information about
++ the internal state of mac80211 in debugfs.
++
++ Say N unless you know you need this.
++
++menuconfig MAC80211_DEBUG_MENU
++ bool "Select mac80211 debugging features"
++ depends on MAC80211
++ ---help---
++ This option collects various mac80211 debug settings.
++
++config MAC80211_DEBUG_PACKET_ALIGNMENT
++ bool "Enable packet alignment debugging"
++ depends on MAC80211_DEBUG_MENU
++ ---help---
++ This option is recommended for driver authors and strongly
++ discouraged for everybody else, it will trigger a warning
++ when a driver hands mac80211 a buffer that is aligned in
++ a way that will cause problems with the IP stack on some
++ architectures.
++
++ Say N unless you're writing a mac80211 based driver.
++
++config MAC80211_NOINLINE
++ bool "Do not inline TX/RX handlers"
++ depends on MAC80211_DEBUG_MENU
++ ---help---
++ This option affects code generation in mac80211, when
++ selected some functions are marked "noinline" to allow
++ easier debugging of problems in the transmit and receive
++ paths.
++
++ This option increases code size a bit and inserts a lot
++ of function calls in the code, but is otherwise safe to
++ enable.
++
++ If unsure, say N unless you expect to be finding problems
++ in mac80211.
++
++config MAC80211_VERBOSE_DEBUG
++ bool "Verbose debugging output"
++ depends on MAC80211_DEBUG_MENU
++ ---help---
++ Selecting this option causes mac80211 to print out
++ many debugging messages. It should not be selected
++ on production systems as some of the messages are
++ remotely triggerable.
++
++ Do not select this option.
++
++config MAC80211_HT_DEBUG
++ bool "Verbose HT debugging"
++ depends on MAC80211_DEBUG_MENU
++ ---help---
++ This option enables 802.11n High Throughput features
++ debug tracing output.
++
++ It should not be selected on production systems as some
++ of the messages are remotely triggerable.
++
++ Do not select this option.
++
++config MAC80211_TKIP_DEBUG
++ bool "Verbose TKIP debugging"
++ depends on MAC80211_DEBUG_MENU
++ ---help---
++ Selecting this option causes mac80211 to print out
++ very verbose TKIP debugging messages. It should not
++ be selected on production systems as those messages
++ are remotely triggerable.
++
++ Do not select this option.
++
++config MAC80211_IBSS_DEBUG
++ bool "Verbose IBSS debugging"
++ depends on MAC80211_DEBUG_MENU
++ ---help---
++ Selecting this option causes mac80211 to print out
++ very verbose IBSS debugging messages. It should not
++ be selected on production systems as those messages
++ are remotely triggerable.
++
++ Do not select this option.
++
++config MAC80211_VERBOSE_PS_DEBUG
++ bool "Verbose powersave mode debugging"
++ depends on MAC80211_DEBUG_MENU
++ ---help---
++ Selecting this option causes mac80211 to print out very
++ verbose power save mode debugging messages (when mac80211
++ is an AP and has power saving stations.)
++ It should not be selected on production systems as those
++ messages are remotely triggerable.
++
++ Do not select this option.
++
++config MAC80211_VERBOSE_MPL_DEBUG
++ bool "Verbose mesh peer link debugging"
++ depends on MAC80211_DEBUG_MENU
++ depends on MAC80211_MESH
++ ---help---
++ Selecting this option causes mac80211 to print out very
++ verbose mesh peer link debugging messages (when mac80211
++ is taking part in a mesh network).
++ It should not be selected on production systems as those
++ messages are remotely triggerable.
++
++ Do not select this option.
++
++config MAC80211_DEBUG_COUNTERS
++ bool "Extra statistics for TX/RX debugging"
++ depends on MAC80211_DEBUG_MENU
++ depends on MAC80211_DEBUGFS
++ ---help---
++ Selecting this option causes mac80211 to keep additional
++ and very verbose statistics about TX and RX handler use
++ and show them in debugfs.
++
++ If unsure, say N.
++
++config MAC80211_VERBOSE_SPECT_MGMT_DEBUG
++ bool "Verbose Spectrum Management (IEEE 802.11h)debugging"
++ depends on MAC80211_DEBUG_MENU
++ ---help---
++ Say Y here to print out verbose Spectrum Management (IEEE 802.11h)
++ debug messages.
diff --git a/package/mac80211/patches/100-define.patch b/package/mac80211/patches/100-define.patch
new file mode 100644
index 0000000..b41cad6
--- /dev/null
+++ b/package/mac80211/patches/100-define.patch
@@ -0,0 +1,14 @@
+--- a/include/net/compat.h
++++ b/include/net/compat.h
+@@ -6,6 +6,11 @@
+ #include <linux/compat_autoconf.h>
+
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28))
++#include <linux/if_ether.h>
++
++#ifndef ETH_P_PAE
++#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
++#endif
+ #endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)) */
+
+ #endif /* LINUX_26_COMPAT_H */
diff --git a/package/mac80211/patches/110-ath5k_stat.patch b/package/mac80211/patches/110-ath5k_stat.patch
new file mode 100644
index 0000000..2cd9548
--- /dev/null
+++ b/package/mac80211/patches/110-ath5k_stat.patch
@@ -0,0 +1,53 @@
+This patch removes the unnecessary ATH_STAT_MRRETRY flag and turns
+other ATH_STAT_* defines into an enum
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+--- a/drivers/net/wireless/ath5k/base.c
++++ b/drivers/net/wireless/ath5k/base.c
+@@ -707,19 +707,6 @@
+ ATH5K_DBG(sc, ATH5K_DEBUG_ANY, "devid 0x%x\n", pdev->device);
+
+ /*
+- * Check if the MAC has multi-rate retry support.
+- * We do this by trying to setup a fake extended
+- * descriptor. MAC's that don't have support will
+- * return false w/o doing anything. MAC's that do
+- * support it will return true w/o doing anything.
+- */
+- ret = ah->ah_setup_mrr_tx_desc(ah, NULL, 0, 0, 0, 0, 0, 0);
+- if (ret < 0)
+- goto err;
+- if (ret > 0)
+- __set_bit(ATH_STAT_MRRETRY, sc->status);
+-
+- /*
+ * Reset the key cache since some parts do not
+ * reset the contents on initial power up.
+ */
+--- a/drivers/net/wireless/ath5k/base.h
++++ b/drivers/net/wireless/ath5k/base.h
+@@ -99,6 +99,12 @@
+ #define ATH_CHAN_MAX (14+14+14+252+20)
+ #endif
+
++enum {
++ ATH_STAT_INVALID, /* disable hardware accesses */
++ ATH_STAT_PROMISC,
++ ATH_STAT_LEDSOFT /* enable LED gpio status */
++};
++
+ /* Software Carrier, keeps track of the driver state
+ * associated with an instance of a device */
+ struct ath5k_softc {
+@@ -129,10 +135,6 @@
+ u16 cachelsz; /* cache line size */
+
+ DECLARE_BITMAP(status, 4);
+-#define ATH_STAT_INVALID 0 /* disable hardware accesses */
+-#define ATH_STAT_MRRETRY 1 /* multi-rate retry support */
+-#define ATH_STAT_PROMISC 2
+-#define ATH_STAT_LEDSOFT 3 /* enable LED gpio status */
+
+ unsigned int filter_flags; /* HW flags, AR5K_RX_FILTER_* */
+ unsigned int curmode; /* current phy mode */
diff --git a/package/mac80211/patches/200-hwkey_len.patch b/package/mac80211/patches/200-hwkey_len.patch
new file mode 100644
index 0000000..20deeb7
--- /dev/null
+++ b/package/mac80211/patches/200-hwkey_len.patch
@@ -0,0 +1,183 @@
+Free up 2 bytes in skb->cb to be used for multi-rate retry later.
+Move iv_len and icv_len initialization into key alloc.
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+--- a/include/net/mac80211.h
++++ b/include/net/mac80211.h
+@@ -337,8 +337,6 @@
+ unsigned long jiffies;
+ s8 rts_cts_rate_idx, alt_retry_rate_idx;
+ u8 retry_limit;
+- u8 icv_len;
+- u8 iv_len;
+ } control;
+ struct {
+ u64 ampdu_ack_map;
+@@ -635,6 +633,8 @@
+ */
+ struct ieee80211_key_conf {
+ enum ieee80211_key_alg alg;
++ u8 icv_len;
++ u8 iv_len;
+ u8 hw_key_idx;
+ u8 flags;
+ s8 keyidx;
+--- a/drivers/net/wireless/b43/xmit.c
++++ b/drivers/net/wireless/b43/xmit.c
+@@ -252,7 +252,7 @@
+ }
+
+ /* Hardware appends ICV. */
+- plcp_fragment_len += info->control.icv_len;
++ plcp_fragment_len += info->control.hw_key->icv_len;
+
+ key_idx = b43_kidx_to_fw(dev, key_idx);
+ mac_ctl |= (key_idx << B43_TXH_MAC_KEYIDX_SHIFT) &
+@@ -260,7 +260,7 @@
+ mac_ctl |= (key->algorithm << B43_TXH_MAC_KEYALG_SHIFT) &
+ B43_TXH_MAC_KEYALG;
+ wlhdr_len = ieee80211_hdrlen(fctl);
+- iv_len = min((size_t) info->control.iv_len,
++ iv_len = min((size_t) info->control.hw_key->iv_len,
+ ARRAY_SIZE(txhdr->iv));
+ memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len);
+ }
+--- a/drivers/net/wireless/b43legacy/xmit.c
++++ b/drivers/net/wireless/b43legacy/xmit.c
+@@ -243,7 +243,7 @@
+
+ if (key->enabled) {
+ /* Hardware appends ICV. */
+- plcp_fragment_len += info->control.icv_len;
++ plcp_fragment_len += info->control.hw_key->icv_len;
+
+ key_idx = b43legacy_kidx_to_fw(dev, key_idx);
+ mac_ctl |= (key_idx << B43legacy_TX4_MAC_KEYIDX_SHIFT) &
+@@ -252,7 +252,7 @@
+ B43legacy_TX4_MAC_KEYALG_SHIFT) &
+ B43legacy_TX4_MAC_KEYALG;
+ wlhdr_len = ieee80211_hdrlen(wlhdr->frame_control);
+- iv_len = min((size_t)info->control.iv_len,
++ iv_len = min((size_t)info->control.hw_key->iv_len,
+ ARRAY_SIZE(txhdr->iv));
+ memcpy(txhdr->iv, ((u8 *)wlhdr) + wlhdr_len, iv_len);
+ } else {
+--- a/net/mac80211/wep.c
++++ b/net/mac80211/wep.c
+@@ -313,9 +313,6 @@
+ {
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+- info->control.iv_len = WEP_IV_LEN;
+- info->control.icv_len = WEP_ICV_LEN;
+-
+ if (!(tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) {
+ if (ieee80211_wep_encrypt(tx->local, skb, tx->key))
+ return -1;
+--- a/net/mac80211/wpa.c
++++ b/net/mac80211/wpa.c
+@@ -152,9 +152,6 @@
+ int len, tail;
+ u8 *pos;
+
+- info->control.icv_len = TKIP_ICV_LEN;
+- info->control.iv_len = TKIP_IV_LEN;
+-
+ if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
+ !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
+ /* hwaccel - with no need for preallocated room for IV/ICV */
+@@ -374,9 +371,6 @@
+ u8 *pos, *pn;
+ int i;
+
+- info->control.icv_len = CCMP_MIC_LEN;
+- info->control.iv_len = CCMP_HDR_LEN;
+-
+ if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
+ !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
+ /* hwaccel - with no need for preallocated room for CCMP "
+--- a/drivers/net/wireless/ath5k/base.c
++++ b/drivers/net/wireless/ath5k/base.c
+@@ -1164,7 +1164,7 @@
+
+ if (info->control.hw_key) {
+ keyidx = info->control.hw_key->hw_key_idx;
+- pktlen += info->control.icv_len;
++ pktlen += info->control.hw_key->icv_len;
+ }
+ ret = ah->ah_setup_tx_desc(ah, ds, pktlen,
+ ieee80211_get_hdrlen_from_skb(skb), AR5K_PKT_TYPE_NORMAL,
+--- a/drivers/net/wireless/ath9k/xmit.c
++++ b/drivers/net/wireless/ath9k/xmit.c
+@@ -237,7 +237,7 @@
+
+ if (tx_info->control.hw_key) {
+ txctl->keyix = tx_info->control.hw_key->hw_key_idx;
+- txctl->frmlen += tx_info->control.icv_len;
++ txctl->frmlen += tx_info->control.hw_key->icv_len;
+
+ if (tx_info->control.hw_key->alg == ALG_WEP)
+ txctl->keytype = ATH9K_KEY_TYPE_WEP;
+--- a/drivers/net/wireless/rt2x00/rt2x00crypto.c
++++ b/drivers/net/wireless/rt2x00/rt2x00crypto.c
+@@ -56,10 +56,10 @@
+ * note that these lengths should only be added when
+ * mac80211 does not generate it.
+ */
+- overhead += tx_info->control.icv_len;
++ overhead += key->icv_len;
+
+ if (!(key->flags & IEEE80211_KEY_FLAG_GENERATE_IV))
+- overhead += tx_info->control.iv_len;
++ overhead += key->iv_len;
+
+ if (!(key->flags & IEEE80211_KEY_FLAG_GENERATE_MMIC)) {
+ if (key->alg == ALG_TKIP)
+--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
++++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
+@@ -374,7 +374,7 @@
+ struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX);
+ struct txentry_desc txdesc;
+ struct skb_frame_desc *skbdesc;
+- unsigned int iv_len = IEEE80211_SKB_CB(skb)->control.iv_len;
++ unsigned int iv_len;
+
+ if (unlikely(rt2x00queue_full(queue)))
+ return -EINVAL;
+@@ -410,8 +410,11 @@
+ * the frame so we can provide it to the driver seperately.
+ */
+ if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc.flags) &&
+- !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc.flags))
++ !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc.flags) &&
++ (IEEE80211_SKB_CB(skb)->control.hw_key != NULL)) {
++ iv_len = IEEE80211_SKB_CB(skb)->control.hw_key->iv_len;
+ rt2x00crypto_tx_remove_iv(skb, iv_len);
++ }
+
+ /*
+ * It could be possible that the queue was corrupted and this
+--- a/net/mac80211/key.c
++++ b/net/mac80211/key.c
+@@ -281,6 +281,20 @@
+ key->conf.alg = alg;
+ key->conf.keyidx = idx;
+ key->conf.keylen = key_len;
++ switch (alg) {
++ case ALG_WEP:
++ key->conf.iv_len = WEP_IV_LEN;
++ key->conf.icv_len = WEP_ICV_LEN;
++ break;
++ case ALG_TKIP:
++ key->conf.iv_len = TKIP_IV_LEN;
++ key->conf.icv_len = TKIP_ICV_LEN;
++ break;
++ case ALG_CCMP:
++ key->conf.iv_len = CCMP_HDR_LEN;
++ key->conf.icv_len = CCMP_MIC_LEN;
++ break;
++ }
+ memcpy(key->conf.key, key_data, key_len);
+ INIT_LIST_HEAD(&key->list);
+ INIT_LIST_HEAD(&key->todo);
diff --git a/package/mac80211/patches/210-mrr.patch b/package/mac80211/patches/210-mrr.patch
new file mode 100644
index 0000000..3894788
--- /dev/null
+++ b/package/mac80211/patches/210-mrr.patch
@@ -0,0 +1,183 @@
+This patch adjusts the rate control API to allow multi-rate retry
+if supported by the driver. The ieee80211_hw struct specifies how
+many alternate rate selections the driver supports.
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+--- a/include/net/mac80211.h
++++ b/include/net/mac80211.h
+@@ -292,6 +292,20 @@
+ #define IEEE80211_TX_INFO_DRIVER_DATA_PTRS \
+ (IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *))
+
++/* maximum number of alternate rate retry stages */
++#define IEEE80211_TX_MAX_ALTRATE 3
++
++/**
++ * struct ieee80211_tx_altrate - alternate rate selection/status
++ *
++ * @rate_idx: rate index to attempt to send with
++ * @limit: number of retries before fallback
++ */
++struct ieee80211_tx_altrate {
++ s8 rate_idx;
++ u8 limit;
++};
++
+ /**
+ * struct ieee80211_tx_info - skb transmit information
+ *
+@@ -335,12 +349,14 @@
+ struct ieee80211_key_conf *hw_key;
+ struct ieee80211_sta *sta;
+ unsigned long jiffies;
+- s8 rts_cts_rate_idx, alt_retry_rate_idx;
++ s8 rts_cts_rate_idx;
+ u8 retry_limit;
++ struct ieee80211_tx_altrate retries[IEEE80211_TX_MAX_ALTRATE];
+ } control;
+ struct {
+ u64 ampdu_ack_map;
+ int ack_signal;
++ struct ieee80211_tx_altrate retries[IEEE80211_TX_MAX_ALTRATE + 1];
+ u8 retry_count;
+ bool excessive_retries;
+ u8 ampdu_ack_len;
+@@ -828,6 +844,9 @@
+ * within &struct ieee80211_vif.
+ * @sta_data_size: size (in bytes) of the drv_priv data area
+ * within &struct ieee80211_sta.
++ *
++ * @max_altrates: maximum number of alternate rate retry stages
++ * @max_altrate_tries: maximum number of tries for each stage
+ */
+ struct ieee80211_hw {
+ struct ieee80211_conf conf;
+@@ -844,6 +863,8 @@
+ u16 ampdu_queues;
+ u16 max_listen_interval;
+ s8 max_signal;
++ u8 max_altrates;
++ u8 max_altrate_tries;
+ };
+
+ struct ieee80211_hw *wiphy_to_hw(struct wiphy *wiphy);
+@@ -900,11 +921,11 @@
+
+ static inline struct ieee80211_rate *
+ ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw,
+- const struct ieee80211_tx_info *c)
++ const struct ieee80211_tx_info *c, int idx)
+ {
+- if (c->control.alt_retry_rate_idx < 0)
++ if (c->control.retries[idx].rate_idx < 0)
+ return NULL;
+- return &hw->wiphy->bands[c->band]->bitrates[c->control.alt_retry_rate_idx];
++ return &hw->wiphy->bands[c->band]->bitrates[c->control.retries[idx].rate_idx];
+ }
+
+ /**
+--- a/drivers/net/wireless/b43/xmit.c
++++ b/drivers/net/wireless/b43/xmit.c
+@@ -208,7 +208,7 @@
+ txrate = ieee80211_get_tx_rate(dev->wl->hw, info);
+ rate = txrate ? txrate->hw_value : B43_CCK_RATE_1MB;
+ rate_ofdm = b43_is_ofdm_rate(rate);
+- fbrate = ieee80211_get_alt_retry_rate(dev->wl->hw, info) ? : txrate;
++ fbrate = ieee80211_get_alt_retry_rate(dev->wl->hw, info, 0) ? : txrate;
+ rate_fb = fbrate->hw_value;
+ rate_fb_ofdm = b43_is_ofdm_rate(rate_fb);
+
+--- a/drivers/net/wireless/b43legacy/xmit.c
++++ b/drivers/net/wireless/b43legacy/xmit.c
+@@ -210,7 +210,7 @@
+
+ rate = tx_rate->hw_value;
+ rate_ofdm = b43legacy_is_ofdm_rate(rate);
+- rate_fb = ieee80211_get_alt_retry_rate(dev->wl->hw, info) ? : tx_rate;
++ rate_fb = ieee80211_get_alt_retry_rate(dev->wl->hw, info, 0) ? : tx_rate;
+ rate_fb_ofdm = b43legacy_is_ofdm_rate(rate_fb->hw_value);
+
+ txhdr->mac_frame_ctl = wlhdr->frame_control;
+--- a/drivers/net/wireless/rtl8180_dev.c
++++ b/drivers/net/wireless/rtl8180_dev.c
+@@ -292,8 +292,8 @@
+ entry->plcp_len = cpu_to_le16(plcp_len);
+ entry->tx_buf = cpu_to_le32(mapping);
+ entry->frame_len = cpu_to_le32(skb->len);
+- entry->flags2 = info->control.alt_retry_rate_idx >= 0 ?
+- ieee80211_get_alt_retry_rate(dev, info)->bitrate << 4 : 0;
++ entry->flags2 = info->control.retries[0].rate_idx >= 0 ?
++ ieee80211_get_alt_retry_rate(dev, info, 0)->bitrate << 4 : 0;
+ entry->retry_limit = info->control.retry_limit;
+ entry->flags = cpu_to_le32(tx_flags);
+ __skb_queue_tail(&ring->queue, skb);
+@@ -855,6 +855,7 @@
+ priv = dev->priv;
+ priv->pdev = pdev;
+
++ dev->max_altrates = 1;
+ SET_IEEE80211_DEV(dev, &pdev->dev);
+ pci_set_drvdata(pdev, dev);
+
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -454,15 +454,16 @@
+ if (unlikely(rsel.probe_idx >= 0)) {
+ info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
+ tx->flags |= IEEE80211_TX_PROBE_LAST_FRAG;
+- info->control.alt_retry_rate_idx = tx->rate_idx;
++ info->control.retries[0].rate_idx = tx->rate_idx;
++ info->control.retries[0].limit = tx->local->hw.max_altrate_tries;
+ tx->rate_idx = rsel.probe_idx;
+- } else
+- info->control.alt_retry_rate_idx = -1;
++ } else if (info->control.retries[0].limit == 0)
++ info->control.retries[0].rate_idx = -1;
+
+ if (unlikely(tx->rate_idx < 0))
+ return TX_DROP;
+ } else
+- info->control.alt_retry_rate_idx = -1;
++ info->control.retries[0].rate_idx = -1;
+
+ if (tx->sdata->bss_conf.use_cts_prot &&
+ (tx->flags & IEEE80211_TX_FRAGMENTED) && (rsel.nonerp_idx >= 0)) {
+@@ -521,7 +522,7 @@
+ * frames.
+ * TODO: The last fragment could still use multiple retry
+ * rates. */
+- info->control.alt_retry_rate_idx = -1;
++ info->control.retries[0].rate_idx = -1;
+ }
+
+ /* Use CTS protection for unicast frames sent using extended rates if
+@@ -551,7 +552,7 @@
+ int idx;
+
+ /* Do not use multiple retry rates when using RTS/CTS */
+- info->control.alt_retry_rate_idx = -1;
++ info->control.retries[0].rate_idx = -1;
+
+ /* Use min(data rate, max base rate) as CTS/RTS rate */
+ rate = &sband->bitrates[tx->rate_idx];
+--- a/drivers/net/wireless/b43/main.c
++++ b/drivers/net/wireless/b43/main.c
+@@ -4588,6 +4588,7 @@
+ BIT(NL80211_IFTYPE_ADHOC);
+
+ hw->queues = b43_modparam_qos ? 4 : 1;
++ hw->max_altrates = 1;
+ SET_IEEE80211_DEV(hw, dev->dev);
+ if (is_valid_ether_addr(sprom->et1mac))
+ SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
+--- a/drivers/net/wireless/b43legacy/main.c
++++ b/drivers/net/wireless/b43legacy/main.c
+@@ -3710,6 +3710,7 @@
+ BIT(NL80211_IFTYPE_WDS) |
+ BIT(NL80211_IFTYPE_ADHOC);
+ hw->queues = 1; /* FIXME: hardware has more queues */
++ hw->max_altrates = 1;
+ SET_IEEE80211_DEV(hw, dev->dev);
+ if (is_valid_ether_addr(sprom->et1mac))
+ SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
diff --git a/package/mac80211/patches/250-ath5k_mrr.patch b/package/mac80211/patches/250-ath5k_mrr.patch
new file mode 100644
index 0000000..ff15fd4
--- /dev/null
+++ b/package/mac80211/patches/250-ath5k_mrr.patch
@@ -0,0 +1,208 @@
+Clean up the tx status reporting, fix retry counters (short retries are
+virtual collisions, not actual retries). Implement multi-rate retry
+support.
+This also fixes strong throughput fluctuations with rc80211_pid
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+--- a/drivers/net/wireless/ath5k/base.c
++++ b/drivers/net/wireless/ath5k/base.c
+@@ -530,6 +530,12 @@
+ goto err_irq;
+ }
+
++ /* set up multi-rate retry capabilities */
++ if (sc->ah->ah_version == AR5K_AR5212) {
++ hw->max_altrates = 3;
++ hw->max_altrate_tries = 11;
++ }
++
+ /* Finish private driver data initialization */
+ ret = ath5k_attach(pdev, hw);
+ if (ret)
+@@ -1149,7 +1155,9 @@
+ struct sk_buff *skb = bf->skb;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ unsigned int pktlen, flags, keyidx = AR5K_TXKEYIX_INVALID;
+- int ret;
++ struct ieee80211_rate *rate;
++ unsigned int mrr_rate[3], mrr_tries[3];
++ int i, ret;
+
+ flags = AR5K_TXDESC_INTREQ | AR5K_TXDESC_CLRDMASK;
+
+@@ -1174,6 +1182,22 @@
+ if (ret)
+ goto err_unmap;
+
++ memset(mrr_rate, 0, sizeof(mrr_rate));
++ memset(mrr_tries, 0, sizeof(mrr_tries));
++ for (i = 0; i < 3; i++) {
++ rate = ieee80211_get_alt_retry_rate(sc->hw, info, i);
++ if (!rate)
++ break;
++
++ mrr_rate[i] = rate->hw_value;
++ mrr_tries[i] = info->control.retries[i].limit;
++ }
++
++ ah->ah_setup_mrr_tx_desc(ah, ds,
++ mrr_rate[0], mrr_tries[0],
++ mrr_rate[1], mrr_tries[1],
++ mrr_rate[2], mrr_tries[2]);
++
+ ds->ds_link = 0;
+ ds->ds_data = bf->skbaddr;
+
+@@ -1790,7 +1814,7 @@
+ struct ath5k_desc *ds;
+ struct sk_buff *skb;
+ struct ieee80211_tx_info *info;
+- int ret;
++ int i, ret;
+
+ spin_lock(&txq->lock);
+ list_for_each_entry_safe(bf, bf0, &txq->q, list) {
+@@ -1812,7 +1836,25 @@
+ pci_unmap_single(sc->pdev, bf->skbaddr, skb->len,
+ PCI_DMA_TODEVICE);
+
+- info->status.retry_count = ts.ts_shortretry + ts.ts_longretry / 6;
++ memset(&info->status, 0, sizeof(info->status));
++ info->tx_rate_idx = ath5k_hw_to_driver_rix(sc,
++ ts.ts_rate[ts.ts_final_idx]);
++ info->status.retry_count = ts.ts_longretry;
++
++ for (i = 0; i < 4; i++) {
++ struct ieee80211_tx_altrate *r =
++ &info->status.retries[i];
++
++ if (ts.ts_rate[i]) {
++ r->rate_idx = ath5k_hw_to_driver_rix(sc, ts.ts_rate[i]);
++ r->limit = ts.ts_retry[i];
++ } else {
++ r->rate_idx = -1;
++ r->limit = 0;
++ }
++ }
++
++ info->status.excessive_retries = 0;
+ if (unlikely(ts.ts_status)) {
+ sc->ll_stats.dot11ACKFailureCount++;
+ if (ts.ts_status & AR5K_TXERR_XRETRY)
+--- a/drivers/net/wireless/ath5k/desc.c
++++ b/drivers/net/wireless/ath5k/desc.c
+@@ -318,6 +318,15 @@
+ return 0;
+ }
+
++/* no mrr support for cards older than 5212 */
++static int
++ath5k_hw_setup_no_mrr(struct ath5k_hw *ah, struct ath5k_desc *desc,
++ unsigned int tx_rate1, u_int tx_tries1, u_int tx_rate2,
++ u_int tx_tries2, unsigned int tx_rate3, u_int tx_tries3)
++{
++ return 0;
++}
++
+ /*
+ * Proccess the tx status descriptor on 5210/5211
+ */
+@@ -352,8 +361,10 @@
+ AR5K_DESC_TX_STATUS1_ACK_SIG_STRENGTH);
+ ts->ts_antenna = 1;
+ ts->ts_status = 0;
+- ts->ts_rate = AR5K_REG_MS(tx_ctl->tx_control_0,
++ ts->ts_rate[0] = AR5K_REG_MS(tx_ctl->tx_control_0,
+ AR5K_2W_TX_DESC_CTL0_XMIT_RATE);
++ ts->ts_retry[0] = ts->ts_longretry;
++ ts->ts_final_idx = 0;
+
+ if (!(tx_status->tx_status_0 & AR5K_DESC_TX_STATUS0_FRAME_XMIT_OK)) {
+ if (tx_status->tx_status_0 &
+@@ -405,29 +416,43 @@
+ AR5K_DESC_TX_STATUS1_XMIT_ANTENNA) ? 2 : 1;
+ ts->ts_status = 0;
+
+- switch (AR5K_REG_MS(tx_status->tx_status_1,
+- AR5K_DESC_TX_STATUS1_FINAL_TS_INDEX)) {
+- case 0:
+- ts->ts_rate = tx_ctl->tx_control_3 &
+- AR5K_4W_TX_DESC_CTL3_XMIT_RATE0;
+- break;
++ ts->ts_final_idx = AR5K_REG_MS(tx_status->tx_status_1,
++ AR5K_DESC_TX_STATUS1_FINAL_TS_INDEX);
++
++ /* The longretry counter has the number of un-acked retries
++ * for the final rate. To get the total number of retries
++ * we have to add the retry counters for the other rates
++ * as well
++ */
++ ts->ts_retry[ts->ts_final_idx] = ts->ts_longretry;
++ switch (ts->ts_final_idx) {
++ case 3:
++ ts->ts_rate[3] = AR5K_REG_MS(tx_ctl->tx_control_3,
++ AR5K_4W_TX_DESC_CTL3_XMIT_RATE3);
++
++ ts->ts_retry[2] = AR5K_REG_MS(tx_ctl->tx_control_2,
++ AR5K_4W_TX_DESC_CTL2_XMIT_TRIES2);
++ ts->ts_longretry += ts->ts_retry[2];
++ /* fall through */
++ case 2:
++ ts->ts_rate[2] = AR5K_REG_MS(tx_ctl->tx_control_3,
++ AR5K_4W_TX_DESC_CTL3_XMIT_RATE2);
++
++ ts->ts_retry[1] = AR5K_REG_MS(tx_ctl->tx_control_2,
++ AR5K_4W_TX_DESC_CTL2_XMIT_TRIES1);
++ ts->ts_longretry += ts->ts_retry[1];
++ /* fall through */
+ case 1:
+- ts->ts_rate = AR5K_REG_MS(tx_ctl->tx_control_3,
++ ts->ts_rate[1] = AR5K_REG_MS(tx_ctl->tx_control_3,
+ AR5K_4W_TX_DESC_CTL3_XMIT_RATE1);
+- ts->ts_longretry += AR5K_REG_MS(tx_ctl->tx_control_2,
++
++ ts->ts_retry[0] = AR5K_REG_MS(tx_ctl->tx_control_2,
+ AR5K_4W_TX_DESC_CTL2_XMIT_TRIES1);
+- break;
+- case 2:
+- ts->ts_rate = AR5K_REG_MS(tx_ctl->tx_control_3,
+- AR5K_4W_TX_DESC_CTL3_XMIT_RATE2);
+- ts->ts_longretry += AR5K_REG_MS(tx_ctl->tx_control_2,
+- AR5K_4W_TX_DESC_CTL2_XMIT_TRIES2);
+- break;
+- case 3:
+- ts->ts_rate = AR5K_REG_MS(tx_ctl->tx_control_3,
+- AR5K_4W_TX_DESC_CTL3_XMIT_RATE3);
+- ts->ts_longretry += AR5K_REG_MS(tx_ctl->tx_control_2,
+- AR5K_4W_TX_DESC_CTL2_XMIT_TRIES3);
++ ts->ts_longretry += ts->ts_retry[0];
++ /* fall through */
++ case 0:
++ ts->ts_rate[0] = tx_ctl->tx_control_3 &
++ AR5K_4W_TX_DESC_CTL3_XMIT_RATE0;
+ break;
+ }
+
+@@ -653,7 +678,7 @@
+ } else {
+ ah->ah_setup_rx_desc = ath5k_hw_setup_rx_desc;
+ ah->ah_setup_tx_desc = ath5k_hw_setup_2word_tx_desc;
+- ah->ah_setup_mrr_tx_desc = ath5k_hw_setup_mrr_tx_desc;
++ ah->ah_setup_mrr_tx_desc = ath5k_hw_setup_no_mrr;
+ ah->ah_proc_tx_desc = ath5k_hw_proc_2word_tx_status;
+ }
+
+--- a/drivers/net/wireless/ath5k/ath5k.h
++++ b/drivers/net/wireless/ath5k/ath5k.h
+@@ -418,7 +418,9 @@
+ u16 ts_seqnum;
+ u16 ts_tstamp;
+ u8 ts_status;
+- u8 ts_rate;
++ u8 ts_rate[4];
++ u8 ts_retry[4];
++ u8 ts_final_idx;
+ s8 ts_rssi;
+ u8 ts_shortretry;
+ u8 ts_longretry;
diff --git a/package/mac80211/patches/299-compat_minstrel.patch b/package/mac80211/patches/299-compat_minstrel.patch
new file mode 100644
index 0000000..7f50197
--- /dev/null
+++ b/package/mac80211/patches/299-compat_minstrel.patch
@@ -0,0 +1,32 @@
+--- a/config.mk
++++ b/config.mk
+@@ -47,8 +47,9 @@
+ endif # build check
+ endif # kernel Makefile check
+
+-CONFIG_MAC80211_RC_DEFAULT=pid
++CONFIG_MAC80211_RC_DEFAULT=minstrel
+ CONFIG_MAC80211_RC_PID=y
++CONFIG_MAC80211_RC_MINSTREL=y
+
+ # enable mesh networking too
+ CONFIG_MAC80211_MESH=y
+--- a/include/linux/compat_autoconf.h
++++ b/include/linux/compat_autoconf.h
+@@ -18,11 +18,14 @@
+ #define CONFIG_MAC80211 1
+ #endif /* CONFIG_MAC80211 */
+ #ifndef CONFIG_MAC80211_RC_DEFAULT
+-#define CONFIG_MAC80211_RC_DEFAULT "pid"
+-#endif /* CONFIG_MAC80211_RC_DEFAULT */
++#define CONFIG_MAC80211_RC_DEFAULT "minstrel"
++#endif /* CONFIG_MAC80211_RC_DEFAULT */
+ #ifndef CONFIG_MAC80211_RC_PID
+ #define CONFIG_MAC80211_RC_PID 1
+ #endif /* CONFIG_MAC80211_RC_PID */
++#ifndef CONFIG_MAC80211_RC_MINSTREL
++#define CONFIG_MAC80211_RC_MINSTREL 1
++#endif /* CONFIG_MAC80211_RC_MINSTREL */
+ #ifndef CONFIG_MAC80211_MESH
+ #define CONFIG_MAC80211_MESH 1
+ #endif /* CONFIG_MAC80211_MESH */
diff --git a/package/mac80211/patches/300-minstrel.patch b/package/mac80211/patches/300-minstrel.patch
new file mode 100644
index 0000000..ee1887a
--- /dev/null
+++ b/package/mac80211/patches/300-minstrel.patch
@@ -0,0 +1,928 @@
+--- /dev/null
++++ b/net/mac80211/rc80211_minstrel.c
+@@ -0,0 +1,583 @@
++/*
++ * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ *
++ * Based on minstrel.c:
++ * Copyright (C) 2005-2007 Derek Smithies <derek@indranet.co.nz>
++ * Sponsored by Indranet Technologies Ltd
++ *
++ * Based on sample.c:
++ * Copyright (c) 2005 John Bicket
++ * All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ * notice, this list of conditions and the following disclaimer,
++ * without modification.
++ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
++ * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
++ * redistribution must be conditioned upon including a substantially
++ * similar Disclaimer requirement for further binary redistribution.
++ * 3. Neither the names of the above-listed copyright holders nor the names
++ * of any contributors may be used to endorse or promote products derived
++ * from this software without specific prior written permission.
++ *
++ * Alternatively, this software may be distributed under the terms of the
++ * GNU General Public License ("GPL") version 2 as published by the Free
++ * Software Foundation.
++ *
++ * NO WARRANTY
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
++ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
++ * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
++ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
++ * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
++ * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
++ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
++ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
++ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
++ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
++ * THE POSSIBILITY OF SUCH DAMAGES.
++ */
++#include <linux/netdevice.h>
++#include <linux/types.h>
++#include <linux/skbuff.h>
++#include <linux/debugfs.h>
++#include <linux/random.h>
++#include <linux/ieee80211.h>
++#include <net/mac80211.h>
++#include "rate.h"
++#include "rc80211_minstrel.h"
++
++#define SAMPLE_COLUMNS 10
++#define SAMPLE_TBL(_mi, _idx, _col) \
++ _mi->sample_table[(_idx * SAMPLE_COLUMNS) + _col]
++
++/* convert mac80211 rate index to local array index */
++static inline int
++rix_to_ndx(struct minstrel_sta_info *mi, int rix)
++{
++ int i = rix;
++ for (i = rix; i >= 0; i--)
++ if (mi->r[i].rix == rix)
++ break;
++ WARN_ON(mi->r[i].rix != rix);
++ return i;
++}
++
++static inline bool
++use_low_rate(struct sk_buff *skb)
++{
++ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
++ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
++ u16 fc;
++
++ fc = le16_to_cpu(hdr->frame_control);
++
++ return ((info->flags & IEEE80211_TX_CTL_NO_ACK) ||
++ (fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
++ is_multicast_ether_addr(hdr->addr1));
++}
++
++
++static void
++minstrel_update_stats(struct minstrel_priv *mp, struct minstrel_sta_info *mi)
++{
++ u32 max_tp = 0, index_max_tp = 0, index_max_tp2 = 0;
++ u32 max_prob = 0, index_max_prob = 0;
++ u32 usecs;
++ u32 p;
++ int i;
++
++ mi->stats_update = jiffies;
++ for (i = 0; i < mi->n_rates; i++) {
++ struct minstrel_rate *mr = &mi->r[i];
++
++ usecs = mr->perfect_tx_time;
++ if (!usecs)
++ usecs = 1000000;
++
++ /* To avoid rounding issues, probabilities scale from 0 (0%)
++ * to 18000 (100%) */
++ if (mr->attempts) {
++ p = (mr->success * 18000) / mr->attempts;
++ mr->succ_hist += mr->success;
++ mr->att_hist += mr->attempts;
++ mr->cur_prob = p;
++ p = ((p * (100 - mp->ewma_level)) + (mr->probability *
++ mp->ewma_level)) / 100;
++ mr->probability = p;
++ mr->cur_tp = p * (1000000 / usecs);
++ }
++
++ mr->last_success = mr->success;
++ mr->last_attempts = mr->attempts;
++ mr->success = 0;
++ mr->attempts = 0;
++
++ /* Sample less often below the 10% chance of success.
++ * Sample less often above the 95% chance of success. */
++ if ((mr->probability > 17100) || (mr->probability < 1800)) {
++ mr->adjusted_retry_count = mr->retry_count >> 1;
++ if (mr->adjusted_retry_count > 2)
++ mr->adjusted_retry_count = 2;
++ } else {
++ mr->adjusted_retry_count = mr->retry_count;
++ }
++ if (!mr->adjusted_retry_count)
++ mr->adjusted_retry_count = 2;
++ }
++
++ for (i = 0; i < mi->n_rates; i++) {
++ struct minstrel_rate *mr = &mi->r[i];
++ if (max_tp < mr->cur_tp) {
++ index_max_tp = i;
++ max_tp = mr->cur_tp;
++ }
++ if (max_prob < mr->probability) {
++ index_max_prob = i;
++ max_prob = mr->probability;
++ }
++ }
++
++ max_tp = 0;
++ for (i = 0; i < mi->n_rates; i++) {
++ struct minstrel_rate *mr = &mi->r[i];
++
++ if (i == index_max_tp)
++ continue;
++
++ if (max_tp < mr->cur_tp) {
++ index_max_tp2 = i;
++ max_tp = mr->cur_tp;
++ }
++ }
++ mi->max_tp_rate = index_max_tp;
++ mi->max_tp_rate2 = index_max_tp2;
++ mi->max_prob_rate = index_max_prob;
++}
++
++static void
++minstrel_tx_status(void *priv, struct ieee80211_supported_band *sband,
++ struct ieee80211_sta *sta, void *priv_sta,
++ struct sk_buff *skb)
++{
++ struct minstrel_sta_info *mi = priv_sta;
++ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
++ struct ieee80211_tx_altrate *ar = info->status.retries;
++ struct minstrel_priv *mp = priv;
++ int i, ndx, tries;
++ int success = 0;
++
++ if (!info->status.excessive_retries)
++ success = 1;
++
++ if (!mp->has_mrr || (ar[0].rate_idx < 0)) {
++ ndx = rix_to_ndx(mi, info->tx_rate_idx);
++ tries = info->status.retry_count + 1;
++ mi->r[ndx].success += success;
++ mi->r[ndx].attempts += tries;
++ return;
++ }
++
++ for (i = 0; i < 4; i++) {
++ if (ar[i].rate_idx < 0)
++ break;
++
++ ndx = rix_to_ndx(mi, ar[i].rate_idx);
++ mi->r[ndx].attempts += ar[i].limit + 1;
++
++ if ((i != 3) && (ar[i + 1].rate_idx < 0))
++ mi->r[ndx].success += success;
++ }
++
++ if ((info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) && (i >= 0))
++ mi->sample_count++;
++
++ if (mi->sample_deferred > 0)
++ mi->sample_deferred--;
++}
++
++
++static inline unsigned int
++minstrel_get_retry_count(struct minstrel_rate *mr,
++ struct ieee80211_tx_info *info)
++{
++ unsigned int retry = mr->adjusted_retry_count;
++
++ if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS)
++ retry = max(2U, min(mr->retry_count_rtscts, retry));
++ else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)
++ retry = max(2U, min(mr->retry_count_cts, retry));
++ return retry;
++}
++
++
++static int
++minstrel_get_next_sample(struct minstrel_sta_info *mi)
++{
++ unsigned int sample_ndx;
++ sample_ndx = SAMPLE_TBL(mi, mi->sample_idx, mi->sample_column);
++ mi->sample_idx++;
++ if (mi->sample_idx > (mi->n_rates - 2)) {
++ mi->sample_idx = 0;
++ mi->sample_column++;
++ if (mi->sample_column >= SAMPLE_COLUMNS)
++ mi->sample_column = 0;
++ }
++ return sample_ndx;
++}
++
++void
++minstrel_get_rate(void *priv, struct ieee80211_supported_band *sband,
++ struct ieee80211_sta *sta, void *priv_sta,
++ struct sk_buff *skb, struct rate_selection *sel)
++{
++ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
++ struct minstrel_sta_info *mi = priv_sta;
++ struct minstrel_priv *mp = priv;
++ struct ieee80211_tx_altrate *ar = info->control.retries;
++ unsigned int ndx, sample_ndx = 0;
++ bool mrr;
++ bool sample_slower = false;
++ bool sample = false;
++ int i, delta;
++ int mrr_ndx[3];
++ int sample_rate;
++
++ if (!sta || !mi || use_low_rate(skb)) {
++ sel->rate_idx = rate_lowest_index(sband, sta);
++ return;
++ }
++
++ mrr = mp->has_mrr;
++
++ /* mac80211 does not allow mrr for RTS/CTS */
++ if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) ||
++ (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT))
++ mrr = false;
++
++ if (time_after(jiffies, mi->stats_update + (mp->update_interval *
++ HZ) / 1000))
++ minstrel_update_stats(mp, mi);
++
++ ndx = mi->max_tp_rate;
++
++ if (mrr)
++ sample_rate = mp->lookaround_rate_mrr;
++ else
++ sample_rate = mp->lookaround_rate;
++
++ mi->packet_count++;
++ delta = (mi->packet_count * sample_rate / 100) -
++ (mi->sample_count + mi->sample_deferred / 2);
++
++ /* delta > 0: sampling required */
++ if (delta > 0) {
++ if (mi->packet_count >= 10000) {
++ mi->sample_deferred = 0;
++ mi->sample_count = 0;
++ mi->packet_count = 0;
++ } else if (delta > mi->n_rates * 2) {
++ /* With multi-rate retry, not every planned sample
++ * attempt actually gets used, due to the way the retry
++ * chain is set up - [max_tp,sample,prob,lowest] for
++ * sample_rate < max_tp.
++ *
++ * If there's too much sampling backlog and the link
++ * starts getting worse, minstrel would start bursting
++ * out lots of sampling frames, which would result
++ * in a large throughput loss. */
++ mi->sample_count += (delta - mi->n_rates * 2);
++ }
++
++ sample_ndx = minstrel_get_next_sample(mi);
++ sample = true;
++ sample_slower = mrr && (mi->r[sample_ndx].perfect_tx_time >
++ mi->r[ndx].perfect_tx_time);
++
++ if (!sample_slower) {
++ ndx = sample_ndx;
++ mi->sample_count++;
++ } else {
++ /* Only use IEEE80211_TX_CTL_RATE_CTRL_PROBE to mark
++ * packets that have the sampling rate deferred to the
++ * second MRR stage. Increase the sample counter only
++ * if the deferred sample rate was actually used.
++ * Use the sample_deferred counter to make sure that
++ * the sampling is not done in large bursts */
++ info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
++ mi->sample_deferred++;
++ }
++ }
++ sel->rate_idx = mi->r[ndx].rix;
++ info->control.retry_limit = minstrel_get_retry_count(&mi->r[ndx], info);
++
++ if (!mrr) {
++ ar[0].rate_idx = mi->lowest_rix;
++ ar[0].limit = mp->max_retry;
++ ar[1].rate_idx = -1;
++ return;
++ }
++
++ /* MRR setup */
++ if (sample) {
++ if (sample_slower)
++ mrr_ndx[0] = sample_ndx;
++ else
++ mrr_ndx[0] = mi->max_tp_rate;
++ } else {
++ mrr_ndx[0] = mi->max_tp_rate2;
++ }
++ mrr_ndx[1] = mi->max_prob_rate;
++ mrr_ndx[2] = 0;
++ for (i = 0; i < 3; i++) {
++ ar[i].rate_idx = mi->r[mrr_ndx[i]].rix;
++ ar[i].limit = mi->r[mrr_ndx[i]].adjusted_retry_count;
++ }
++}
++
++
++static void
++calc_rate_durations(struct minstrel_sta_info *mi, struct ieee80211_local *local,
++ struct minstrel_rate *d, struct ieee80211_rate *rate)
++{
++ int erp = !!(rate->flags & IEEE80211_RATE_ERP_G);
++
++ d->perfect_tx_time = ieee80211_frame_duration(local, 1200,
++ rate->bitrate, erp, 1);
++ d->ack_time = ieee80211_frame_duration(local, 10,
++ rate->bitrate, erp, 1);
++}
++
++static void
++init_sample_table(struct minstrel_sta_info *mi)
++{
++ unsigned int i, col, new_idx;
++ unsigned int n_srates = mi->n_rates - 1;
++ u8 rnd[8];
++
++ mi->sample_column = 0;
++ mi->sample_idx = 0;
++ memset(mi->sample_table, 0, SAMPLE_COLUMNS * mi->n_rates);
++
++ for (col = 0; col < SAMPLE_COLUMNS; col++) {
++ for (i = 0; i < n_srates; i++) {
++ get_random_bytes(rnd, sizeof(rnd));
++ new_idx = (i + rnd[i & 7]) % n_srates;
++
++ while (SAMPLE_TBL(mi, new_idx, col) != 0)
++ new_idx = (new_idx + 1) % n_srates;
++
++ /* Don't sample the slowest rate (i.e. slowest base
++ * rate). We must presume that the slowest rate works
++ * fine, or else other management frames will also be
++ * failing and the link will break */
++ SAMPLE_TBL(mi, new_idx, col) = i + 1;
++ }
++ }
++}
++
++static void
++minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband,
++ struct ieee80211_sta *sta, void *priv_sta)
++{
++ struct minstrel_sta_info *mi = priv_sta;
++ struct minstrel_priv *mp = priv;
++ struct minstrel_rate *mr_ctl;
++ unsigned int i, n = 0;
++ unsigned int t_slot = 9; /* FIXME: get real slot time */
++
++ mi->lowest_rix = rate_lowest_index(sband, sta);
++ mr_ctl = &mi->r[rix_to_ndx(mi, mi->lowest_rix)];
++ mi->sp_ack_dur = mr_ctl->ack_time;
++
++ for (i = 0; i < sband->n_bitrates; i++) {
++ struct minstrel_rate *mr = &mi->r[n];
++ unsigned int tx_time = 0, tx_time_cts = 0, tx_time_rtscts = 0;
++ unsigned int tx_time_single;
++ unsigned int cw = mp->cw_min;
++
++ if (!rate_supported(sta, sband->band, i))
++ continue;
++ n++;
++ memset(mr, 0, sizeof(*mr));
++
++ mr->rix = i;
++ mr->bitrate = sband->bitrates[i].bitrate / 5;
++ calc_rate_durations(mi, hw_to_local(mp->hw), mr,
++ &sband->bitrates[i]);
++
++ /* calculate maximum number of retransmissions before
++ * fallback (based on maximum segment size) */
++ mr->retry_count = 1;
++ mr->retry_count_cts = 1;
++ mr->retry_count_rtscts = 1;
++ tx_time = mr->perfect_tx_time + mi->sp_ack_dur;
++ do {
++ /* add one retransmission */
++ tx_time_single = mr->ack_time + mr->perfect_tx_time;
++
++ /* contention window */
++ tx_time_single += t_slot + min(cw, mp->cw_max);
++ cw = (cw + 1) << 1;
++
++ tx_time += tx_time_single;
++ tx_time_cts += tx_time_single + mi->sp_ack_dur;
++ tx_time_rtscts += tx_time_single + 2 * mi->sp_ack_dur;
++ if ((tx_time_cts < mp->segment_size) &&
++ (mr->retry_count_cts < mp->max_retry))
++ mr->retry_count_cts++;
++ if ((tx_time_rtscts < mp->segment_size) &&
++ (mr->retry_count_rtscts < mp->max_retry))
++ mr->retry_count_rtscts++;
++ } while ((tx_time < mp->segment_size) &&
++ (++mr->retry_count < mp->max_retry));
++ mr->adjusted_retry_count = mr->retry_count;
++ }
++
++ for (i = n; i < sband->n_bitrates; i++) {
++ struct minstrel_rate *mr = &mi->r[i];
++ mr->rix = -1;
++ }
++
++ mi->n_rates = n;
++ mi->stats_update = jiffies;
++
++ init_sample_table(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 < IEEE80211_NUM_BANDS; i++) {
++ sband = hw->wiphy->bands[hw->conf.channel->band];
++ if (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->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_clear(void *priv)
++{
++}
++
++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;
++
++ /* moving average weight for EWMA */
++ mp->ewma_level = 75;
++
++ /* maximum time that the hw is allowed to stay in one MRR segment */
++ mp->segment_size = 6000;
++
++ if (hw->max_altrate_tries > 0)
++ mp->max_retry = hw->max_altrate_tries;
++ else
++ /* safe default, does not necessarily have to match hw properties */
++ mp->max_retry = 7;
++
++ if (hw->max_altrates >= 3)
++ mp->has_mrr = true;
++
++ mp->hw = hw;
++ mp->update_interval = 100;
++
++ return mp;
++}
++
++static void
++minstrel_free(void *priv)
++{
++ kfree(priv);
++}
++
++static struct rate_control_ops mac80211_minstrel = {
++ .name = "minstrel",
++ .tx_status = minstrel_tx_status,
++ .get_rate = minstrel_get_rate,
++ .rate_init = minstrel_rate_init,
++ .clear = minstrel_clear,
++ .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
++};
++
++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/Makefile
++++ b/net/mac80211/Makefile
+@@ -41,4 +41,8 @@
+ rc80211_pid-y := rc80211_pid_algo.o
+ rc80211_pid-$(CONFIG_MAC80211_DEBUGFS) += rc80211_pid_debugfs.o
+
++rc80211_minstrel-y := rc80211_minstrel.o
++rc80211_minstrel-$(CONFIG_MAC80211_DEBUGFS) += rc80211_minstrel_debugfs.o
++
+ mac80211-$(CONFIG_MAC80211_RC_PID) += $(rc80211_pid-y)
++mac80211-$(CONFIG_MAC80211_RC_MINSTREL) += $(rc80211_minstrel-y)
+--- a/net/mac80211/main.c
++++ b/net/mac80211/main.c
+@@ -1015,6 +1015,10 @@
+ BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
+ IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
+
++ ret = rc80211_minstrel_init();
++ if (ret)
++ return ret;
++
+ ret = rc80211_pid_init();
+ if (ret)
+ return ret;
+@@ -1027,6 +1031,7 @@
+ static void __exit ieee80211_exit(void)
+ {
+ rc80211_pid_exit();
++ rc80211_minstrel_exit();
+
+ /*
+ * For key todo, it'll be empty by now but the work
+--- a/net/mac80211/rate.h
++++ b/net/mac80211/rate.h
+@@ -125,4 +125,18 @@
+ }
+ #endif
+
++#ifdef CONFIG_MAC80211_RC_MINSTREL
++extern int rc80211_minstrel_init(void);
++extern void rc80211_minstrel_exit(void);
++#else
++static inline int rc80211_minstrel_init(void)
++{
++ return 0;
++}
++static inline void rc80211_minstrel_exit(void)
++{
++}
++#endif
++
++
+ #endif /* IEEE80211_RATE_H */
+--- /dev/null
++++ b/net/mac80211/rc80211_minstrel.h
+@@ -0,0 +1,85 @@
++/*
++ * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#ifndef __RC_MINSTREL_H
++#define __RC_MINSTREL_H
++
++struct minstrel_rate {
++ int bitrate;
++ int rix;
++
++ unsigned int perfect_tx_time;
++ unsigned int ack_time;
++
++ unsigned int retry_count;
++ unsigned int retry_count_cts;
++ unsigned int retry_count_rtscts;
++ unsigned int adjusted_retry_count;
++
++ u32 success;
++ u32 attempts;
++ u32 last_attempts;
++ u32 last_success;
++
++ /* parts per thousand */
++ u32 cur_prob;
++ u32 probability;
++
++ /* per-rate throughput */
++ u32 cur_tp;
++ u32 throughput;
++
++ u64 succ_hist;
++ u64 att_hist;
++};
++
++struct minstrel_sta_info {
++ unsigned long stats_update;
++ unsigned int sp_ack_dur;
++ unsigned int rate_avg;
++
++ unsigned int lowest_rix;
++
++ unsigned int max_tp_rate;
++ unsigned int max_tp_rate2;
++ unsigned int max_prob_rate;
++ unsigned int packet_count;
++ unsigned int sample_count;
++ int sample_deferred;
++
++ unsigned int sample_idx;
++ unsigned int sample_column;
++
++ int n_rates;
++ struct minstrel_rate *r;
++
++ /* sampling table */
++ u8 *sample_table;
++
++#ifdef CONFIG_MAC80211_DEBUGFS
++ struct dentry *dbg_stats;
++#endif
++};
++
++struct minstrel_priv {
++ struct ieee80211_hw *hw;
++ bool has_mrr;
++ unsigned int cw_min;
++ unsigned int cw_max;
++ unsigned int max_retry;
++ unsigned int ewma_level;
++ unsigned int segment_size;
++ unsigned int update_interval;
++ unsigned int lookaround_rate;
++ unsigned int lookaround_rate_mrr;
++};
++
++void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
++void minstrel_remove_sta_debugfs(void *priv, void *priv_sta);
++
++#endif
+--- /dev/null
++++ b/net/mac80211/rc80211_minstrel_debugfs.c
+@@ -0,0 +1,164 @@
++/*
++ * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ *
++ * Based on minstrel.c:
++ * Copyright (C) 2005-2007 Derek Smithies <derek@indranet.co.nz>
++ * Sponsored by Indranet Technologies Ltd
++ *
++ * Based on sample.c:
++ * Copyright (c) 2005 John Bicket
++ * All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ * notice, this list of conditions and the following disclaimer,
++ * without modification.
++ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
++ * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
++ * redistribution must be conditioned upon including a substantially
++ * similar Disclaimer requirement for further binary redistribution.
++ * 3. Neither the names of the above-listed copyright holders nor the names
++ * of any contributors may be used to endorse or promote products derived
++ * from this software without specific prior written permission.
++ *
++ * Alternatively, this software may be distributed under the terms of the
++ * GNU General Public License ("GPL") version 2 as published by the Free
++ * Software Foundation.
++ *
++ * NO WARRANTY
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
++ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
++ * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
++ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
++ * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
++ * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
++ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
++ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
++ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
++ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
++ * THE POSSIBILITY OF SUCH DAMAGES.
++ */
++#include <linux/netdevice.h>
++#include <linux/types.h>
++#include <linux/skbuff.h>
++#include <linux/debugfs.h>
++#include <linux/ieee80211.h>
++#include <net/mac80211.h>
++#include "rc80211_minstrel.h"
++
++struct minstrel_stats_info {
++ struct minstrel_sta_info *mi;
++ char buf[4096];
++ size_t len;
++};
++
++static int
++minstrel_stats_open(struct inode *inode, struct file *file)
++{
++ struct minstrel_sta_info *mi = inode->i_private;
++ struct minstrel_stats_info *ms;
++ unsigned int i, tp, prob, eprob;
++ char *p;
++
++ ms = kmalloc(sizeof(*ms), GFP_KERNEL);
++ if (!ms)
++ return -ENOMEM;
++
++ file->private_data = ms;
++ p = ms->buf;
++ p += sprintf(p, "rate throughput ewma prob this prob "
++ "this succ/attempt success attempts\n");
++ for (i = 0; i < mi->n_rates; i++) {
++ struct minstrel_rate *mr = &mi->r[i];
++
++ *(p++) = (i == mi->max_tp_rate) ? 'T' : ' ';
++ *(p++) = (i == mi->max_tp_rate2) ? 't' : ' ';
++ *(p++) = (i == mi->max_prob_rate) ? 'P' : ' ';
++ p += sprintf(p, "%3u%s", mr->bitrate / 2,
++ (mr->bitrate & 1 ? ".5" : " "));
++
++ tp = ((mr->cur_tp * 96) / 18000) >> 10;
++ prob = mr->cur_prob / 18;
++ eprob = mr->probability / 18;
++
++ p += sprintf(p, " %6u.%1u %6u.%1u %6u.%1u "
++ "%3u(%3u) %8llu %8llu\n",
++ tp / 10, tp % 10,
++ eprob / 10, eprob % 10,
++ prob / 10, prob % 10,
++ mr->last_success,
++ mr->last_attempts,
++ mr->succ_hist,
++ mr->att_hist);
++ }
++ p += sprintf(p, "\nTotal packet count:: ideal %d "
++ "lookaround %d\n\n",
++ mi->packet_count - mi->sample_count,
++ mi->sample_count);
++ ms->len = p - ms->buf;
++
++ return 0;
++}
++
++static int
++minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *o)
++{
++ struct minstrel_stats_info *ms;
++ char *src;
++
++ ms = file->private_data;
++ src = ms->buf;
++
++ len = min(len, ms->len);
++ if (len <= *o)
++ return 0;
++
++ src += *o;
++ len -= *o;
++ *o += len;
++
++ if (copy_to_user(buf, src, len))
++ return -EFAULT;
++
++ return len;
++}
++
++static int
++minstrel_stats_release(struct inode *inode, struct file *file)
++{
++ struct minstrel_stats_info *ms = file->private_data;
++
++ kfree(ms);
++
++ return 0;
++}
++
++static struct file_operations minstrel_stat_fops = {
++ .owner = THIS_MODULE,
++ .open = minstrel_stats_open,
++ .read = minstrel_stats_read,
++ .release = minstrel_stats_release,
++};
++
++void
++minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir)
++{
++ struct minstrel_sta_info *mi = priv_sta;
++
++ mi->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, mi,
++ &minstrel_stat_fops);
++}
++
++void
++minstrel_remove_sta_debugfs(void *priv, void *priv_sta)
++{
++ struct minstrel_sta_info *mi = priv_sta;
++
++ debugfs_remove(mi->dbg_stats);
++}
+--- a/net/mac80211/Kconfig
++++ b/net/mac80211/Kconfig
+@@ -22,6 +22,11 @@
+ mac80211 that uses a PID controller to select the TX
+ rate.
+
++config MAC80211_RC_MINSTREL
++ bool "Minstrel"
++ ---help---
++ This option enables the 'minstrel' TX rate control algorithm
++
+ choice
+ prompt "Default rate control algorithm"
+ default MAC80211_RC_DEFAULT_PID
+@@ -39,11 +44,19 @@
+ default rate control algorithm. You should choose
+ this unless you know what you are doing.
+
++config MAC80211_RC_DEFAULT_MINSTREL
++ bool "Minstrel"
++ depends on MAC80211_RC_MINSTREL
++ ---help---
++ Select Minstrel as the default rate control algorithm.
++
++
+ endchoice
+
+ config MAC80211_RC_DEFAULT
+ string
+ default "pid" if MAC80211_RC_DEFAULT_PID
++ default "minstrel" if MAC80211_RC_DEFAULT_MINSTREL
+ default ""
+
+ endmenu
generated by cgit v1.1 at 2024-11-26 10:22:16 +0000