+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sat, 9 Jul 2016 15:25:24 +0200
-Subject: [PATCH] ath9k_hw: reset AHB-WMAC interface on AR91xx
-
-Should fix a few stability issues
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/wireless/ath/ath9k/hw.c
-+++ b/drivers/net/wireless/ath/ath9k/hw.c
-@@ -1394,8 +1394,12 @@ static bool ath9k_hw_set_reset(struct at
- if (!AR_SREV_9100(ah))
- REG_WRITE(ah, AR_RC, 0);
-
-- if (AR_SREV_9100(ah))
-+ if (AR_SREV_9100(ah)) {
-+ /* Reset the AHB-WMAC interface */
-+ if (ah->external_reset)
-+ ah->external_reset();
- udelay(50);
-+ }
-
- return true;
- }
--- /dev/null
+From: Brian Norris <briannorris@chromium.org>
+Date: Thu, 19 Oct 2017 11:45:19 -0700
+Subject: [PATCH] ath10k: fix build errors with !CONFIG_PM
+
+Build errors have been reported with CONFIG_PM=n:
+
+drivers/net/wireless/ath/ath10k/pci.c:3416:8: error: implicit
+declaration of function 'ath10k_pci_suspend'
+[-Werror=implicit-function-declaration]
+
+drivers/net/wireless/ath/ath10k/pci.c:3428:8: error: implicit
+declaration of function 'ath10k_pci_resume'
+[-Werror=implicit-function-declaration]
+
+These are caused by the combination of the following two commits:
+
+6af1de2e4ec4 ("ath10k: mark PM functions as __maybe_unused")
+96378bd2c6cd ("ath10k: fix core PCI suspend when WoWLAN is supported but
+disabled")
+
+Both build fine on their own.
+
+But now that ath10k_pci_pm_{suspend,resume}() is compiled
+unconditionally, we should also compile ath10k_pci_{suspend,resume}()
+unconditionally.
+
+And drop the #ifdef around ath10k_pci_hif_{suspend,resume}() too; they
+are trivial (empty), so we're not saving much space by compiling them
+out. And the alternatives would be to sprinkle more __maybe_unused, or
+spread the #ifdef's further.
+
+Build tested with the following combinations:
+CONFIG_PM=y && CONFIG_PM_SLEEP=y
+CONFIG_PM=y && CONFIG_PM_SLEEP=n
+CONFIG_PM=n
+
+Fixes: 96378bd2c6cd ("ath10k: fix core PCI suspend when WoWLAN is supported but disabled")
+Fixes: 096ad2a15fd8 ("Merge branch 'ath-next'")
+Signed-off-by: Brian Norris <briannorris@chromium.org>
+Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
+---
+
+--- a/drivers/net/wireless/ath/ath10k/pci.c
++++ b/drivers/net/wireless/ath/ath10k/pci.c
+@@ -2577,8 +2577,6 @@ void ath10k_pci_hif_power_down(struct at
+ */
+ }
+
+-#ifdef CONFIG_PM
+-
+ static int ath10k_pci_hif_suspend(struct ath10k *ar)
+ {
+ /* Nothing to do; the important stuff is in the driver suspend. */
+@@ -2627,7 +2625,6 @@ static int ath10k_pci_resume(struct ath1
+
+ return ret;
+ }
+-#endif
+
+ static bool ath10k_pci_validate_cal(void *data, size_t size)
+ {
+@@ -2782,10 +2779,8 @@ static const struct ath10k_hif_ops ath10
+ .power_down = ath10k_pci_hif_power_down,
+ .read32 = ath10k_pci_read32,
+ .write32 = ath10k_pci_write32,
+-#ifdef CONFIG_PM
+ .suspend = ath10k_pci_hif_suspend,
+ .resume = ath10k_pci_hif_resume,
+-#endif
+ .fetch_cal_eeprom = ath10k_pci_hif_fetch_cal_eeprom,
+ };
+
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sat, 9 Jul 2016 15:26:44 +0200
-Subject: [PATCH] ath9k_hw: issue external reset for QCA955x
-
-The RTC interface on the SoC needs to be reset along with the rest of
-the WMAC.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/wireless/ath/ath9k/hw.c
-+++ b/drivers/net/wireless/ath/ath9k/hw.c
-@@ -1271,39 +1271,56 @@ void ath9k_hw_get_delta_slope_vals(struc
- *coef_exponent = coef_exp - 16;
- }
-
--/* AR9330 WAR:
-- * call external reset function to reset WMAC if:
-- * - doing a cold reset
-- * - we have pending frames in the TX queues.
-- */
--static bool ath9k_hw_ar9330_reset_war(struct ath_hw *ah, int type)
-+static bool ath9k_hw_need_external_reset(struct ath_hw *ah, int type)
- {
-- int i, npend = 0;
-+ int i;
-
-- for (i = 0; i < AR_NUM_QCU; i++) {
-- npend = ath9k_hw_numtxpending(ah, i);
-- if (npend)
-- break;
-+ if (type == ATH9K_RESET_COLD)
-+ return true;
-+
-+ if (AR_SREV_9550(ah))
-+ return true;
-+
-+ /* AR9330 WAR:
-+ * call external reset function to reset WMAC if:
-+ * - doing a cold reset
-+ * - we have pending frames in the TX queues.
-+ */
-+ if (AR_SREV_9330(ah)) {
-+ for (i = 0; i < AR_NUM_QCU; i++) {
-+ if (ath9k_hw_numtxpending(ah, i))
-+ return true;
-+ }
- }
-
-- if (ah->external_reset &&
-- (npend || type == ATH9K_RESET_COLD)) {
-- int reset_err = 0;
-+ return false;
-+}
-
-- ath_dbg(ath9k_hw_common(ah), RESET,
-- "reset MAC via external reset\n");
-+static bool ath9k_hw_external_reset(struct ath_hw *ah, int type)
-+{
-+ int err;
-
-- reset_err = ah->external_reset();
-- if (reset_err) {
-- ath_err(ath9k_hw_common(ah),
-- "External reset failed, err=%d\n",
-- reset_err);
-- return false;
-- }
-+ if (!ah->external_reset || !ath9k_hw_need_external_reset(ah, type))
-+ return true;
-
-- REG_WRITE(ah, AR_RTC_RESET, 1);
-+ ath_dbg(ath9k_hw_common(ah), RESET,
-+ "reset MAC via external reset\n");
-+
-+ err = ah->external_reset();
-+ if (err) {
-+ ath_err(ath9k_hw_common(ah),
-+ "External reset failed, err=%d\n", err);
-+ return false;
-+ }
-+
-+ if (AR_SREV_9550(ah)) {
-+ REG_WRITE(ah, AR_RTC_RESET, 0);
-+ udelay(10);
- }
-
-+ REG_WRITE(ah, AR_RTC_RESET, 1);
-+ udelay(10);
-+
- return true;
- }
-
-@@ -1356,24 +1373,24 @@ static bool ath9k_hw_set_reset(struct at
- rst_flags |= AR_RTC_RC_MAC_COLD;
- }
-
-- if (AR_SREV_9330(ah)) {
-- if (!ath9k_hw_ar9330_reset_war(ah, type))
-- return false;
-- }
--
- if (ath9k_hw_mci_is_enabled(ah))
- ar9003_mci_check_gpm_offset(ah);
-
- /* DMA HALT added to resolve ar9300 and ar9580 bus error during
-- * RTC_RC reg read
-+ * RTC_RC reg read. Also needed for AR9550 external reset
- */
-- if (AR_SREV_9300(ah) || AR_SREV_9580(ah)) {
-+ if (AR_SREV_9300(ah) || AR_SREV_9580(ah) || AR_SREV_9550(ah)) {
- REG_SET_BIT(ah, AR_CFG, AR_CFG_HALT_REQ);
- ath9k_hw_wait(ah, AR_CFG, AR_CFG_HALT_ACK, AR_CFG_HALT_ACK,
- 20 * AH_WAIT_TIMEOUT);
-- REG_CLR_BIT(ah, AR_CFG, AR_CFG_HALT_REQ);
- }
-
-+ if (!AR_SREV_9100(ah))
-+ ath9k_hw_external_reset(ah, type);
-+
-+ if (AR_SREV_9300(ah) || AR_SREV_9580(ah))
-+ REG_CLR_BIT(ah, AR_CFG, AR_CFG_HALT_REQ);
-+
- REG_WRITE(ah, AR_RTC_RC, rst_flags);
-
- REGWRITE_BUFFER_FLUSH(ah);
--- /dev/null
+From: Johannes Berg <johannes.berg@intel.com>
+Date: Mon, 20 Nov 2017 17:01:44 +0100
+Subject: [PATCH] mac80211: properly free requested-but-not-started TX agg
+ sessions
+
+When deleting a station or otherwise tearing down all aggregation
+sessions, make sure to delete requested but not yet started ones,
+to avoid the following scenario:
+
+ * session is requested, added to tid_start_tx[]
+ * ieee80211_ba_session_work() runs, gets past BLOCK_BA check
+ * ieee80211_sta_tear_down_BA_sessions() runs, locks &sta->ampdu_mlme.mtx,
+ e.g. while deleting the station - deleting all active sessions
+ * ieee80211_ba_session_work() continues since tear down flushes it, and
+ calls ieee80211_tx_ba_session_handle_start() for the new session, arms
+ the timer for it
+ * station deletion continues to __cleanup_single_sta() and frees the
+ session struct, while the timer is armed
+
+Reported-by: Fengguang Wu <fengguang.wu@intel.com>
+Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+---
+
+--- a/net/mac80211/agg-tx.c
++++ b/net/mac80211/agg-tx.c
+@@ -330,6 +330,11 @@ int ___ieee80211_stop_tx_ba_session(stru
+
+ spin_lock_bh(&sta->lock);
+
++ /* free struct pending for start, if present */
++ tid_tx = sta->ampdu_mlme.tid_start_tx[tid];
++ kfree(tid_tx);
++ sta->ampdu_mlme.tid_start_tx[tid] = NULL;
++
+ tid_tx = rcu_dereference_protected_tid_tx(sta, tid);
+ if (!tid_tx) {
+ spin_unlock_bh(&sta->lock);
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Mon, 11 Jul 2016 12:07:40 +0200
-Subject: [PATCH] ath9k_hw: set spectral scan enable bit on trigger for
- AR9003+
-
-AR9002 code and QCA AR9003+ code do the same.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
-+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
-@@ -1800,6 +1800,8 @@ static void ar9003_hw_spectral_scan_conf
-
- static void ar9003_hw_spectral_scan_trigger(struct ath_hw *ah)
- {
-+ REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
-+ AR_PHY_SPECTRAL_SCAN_ENABLE);
- /* Activate spectral scan */
- REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
- AR_PHY_SPECTRAL_SCAN_ACTIVE);
--- /dev/null
+From: Johannes Berg <johannes.berg@intel.com>
+Date: Thu, 4 Jan 2018 15:51:53 +0100
+Subject: [PATCH] mac80211: mesh: drop frames appearing to be from us
+
+If there are multiple mesh stations with the same MAC address,
+they will both get confused and start throwing warnings.
+
+Obviously in this case nothing can actually work anyway, so just
+drop frames that look like they're from ourselves early on.
+
+Reported-by: Gui Iribarren <gui@altermundi.net>
+Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+---
+
+--- a/net/mac80211/rx.c
++++ b/net/mac80211/rx.c
+@@ -3632,6 +3632,8 @@ static bool ieee80211_accept_frame(struc
+ }
+ return true;
+ case NL80211_IFTYPE_MESH_POINT:
++ if (ether_addr_equal(sdata->vif.addr, hdr->addr2))
++ return false;
+ if (multicast)
+ return true;
+ return ether_addr_equal(sdata->vif.addr, hdr->addr1);
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Tue, 27 Dec 2016 23:16:23 +0100
-Subject: [PATCH] ath9k: don't run periodic and nf calibation at the same
- time
-
-The checks already prevents periodic cal from being started while noise
-floor calibration runs. It is missing checks for the other way around.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
-+++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
-@@ -676,10 +676,10 @@ static int ar9002_hw_calibrate(struct at
- return 0;
-
- ah->cal_list_curr = currCal = currCal->calNext;
-- if (currCal->calState == CAL_WAITING) {
-+ if (currCal->calState == CAL_WAITING)
- ath9k_hw_reset_calibration(ah, currCal);
-- return 0;
-- }
-+
-+ return 0;
- }
-
- /* Do NF cal only at longer intervals */
+++ /dev/null
-From: Felix Fietkau <nbd@openwrt.org>
-Date: Sun, 7 Jun 2015 13:53:35 +0200
-Subject: [PATCH] ath9k: force rx_clear when disabling rx
-
-This makes stopping Rx more reliable and should reduce the frequency of
-Rx related DMA stop warnings. Don't use rx_clear in TX99 mode.
-
-Cc: stable@vger.kernel.org
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
-Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
----
-
---- a/drivers/net/wireless/ath/ath9k/mac.c
-+++ b/drivers/net/wireless/ath/ath9k/mac.c
-@@ -678,13 +678,18 @@ void ath9k_hw_startpcureceive(struct ath
-
- ath9k_ani_reset(ah, is_scanning);
-
-- REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
-+ REG_CLR_BIT(ah, AR_DIAG_SW,
-+ AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT | AR_DIAG_FORCE_RX_CLEAR);
- }
- EXPORT_SYMBOL(ath9k_hw_startpcureceive);
-
- void ath9k_hw_abortpcurecv(struct ath_hw *ah)
- {
-- REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_ABORT | AR_DIAG_RX_DIS);
-+ u32 reg = AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT;
-+
-+ if (!IS_ENABLED(CPTCFG_ATH9K_TX99))
-+ reg |= AR_DIAG_FORCE_RX_CLEAR;
-+ REG_SET_BIT(ah, AR_DIAG_SW, reg);
-
- ath9k_hw_disable_mib_counters(ah);
- }
+++ /dev/null
-From: Felix Fietkau <nbd@openwrt.org>
-Date: Thu, 2 Jul 2015 15:20:56 +0200
-Subject: [PATCH] ath9k: limit retries for powersave response frames
-
-In some cases, the channel might be busy enough that an ath9k AP's
-response to PS-Poll frames might be too slow and the station has already
-gone to sleep. To avoid wasting too much airtime on this, limit the
-number of retries on such frames and ensure that no sample rate gets
-used.
-
-Signed-off-by: Felix Fietkau <nbd@openwrt.org>
----
-
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -188,10 +188,25 @@ static void ath_send_bar(struct ath_atx_
- }
-
- static void ath_set_rates(struct ieee80211_vif *vif, struct ieee80211_sta *sta,
-- struct ath_buf *bf)
-+ struct ath_buf *bf, bool ps)
- {
-+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(bf->bf_mpdu);
-+
-+ if (ps) {
-+ /* Clear the first rate to avoid using a sample rate for PS frames */
-+ info->control.rates[0].idx = -1;
-+ info->control.rates[0].count = 0;
-+ }
-+
- ieee80211_get_tx_rates(vif, sta, bf->bf_mpdu, bf->rates,
- ARRAY_SIZE(bf->rates));
-+ if (!ps)
-+ return;
-+
-+ if (bf->rates[0].count > 2)
-+ bf->rates[0].count = 2;
-+
-+ bf->rates[1].idx = -1;
- }
-
- static void ath_txq_skb_done(struct ath_softc *sc, struct ath_txq *txq,
-@@ -1502,7 +1517,7 @@ ath_tx_form_burst(struct ath_softc *sc,
- break;
- }
-
-- ath_set_rates(tid->an->vif, tid->an->sta, bf);
-+ ath_set_rates(tid->an->vif, tid->an->sta, bf, false);
- } while (1);
- }
-
-@@ -1532,7 +1547,7 @@ static bool ath_tx_sched_aggr(struct ath
- return false;
- }
-
-- ath_set_rates(tid->an->vif, tid->an->sta, bf);
-+ ath_set_rates(tid->an->vif, tid->an->sta, bf, false);
- if (aggr)
- aggr_len = ath_tx_form_aggr(sc, txq, tid, &bf_q, bf);
- else
-@@ -1690,7 +1705,7 @@ void ath9k_release_buffered_frames(struc
- break;
-
- list_add_tail(&bf->list, &bf_q);
-- ath_set_rates(tid->an->vif, tid->an->sta, bf);
-+ ath_set_rates(tid->an->vif, tid->an->sta, bf, true);
- if (bf_isampdu(bf)) {
- ath_tx_addto_baw(sc, tid, bf);
- bf->bf_state.bf_type &= ~BUF_AGGR;
-@@ -2390,7 +2405,7 @@ int ath_tx_start(struct ieee80211_hw *hw
- if (txctl->paprd)
- bf->bf_state.bfs_paprd_timestamp = jiffies;
-
-- ath_set_rates(vif, sta, bf);
-+ ath_set_rates(vif, sta, bf, ps_resp);
- ath_tx_send_normal(sc, txq, tid, skb);
-
- out:
-@@ -2429,7 +2444,7 @@ void ath_tx_cabq(struct ieee80211_hw *hw
- break;
-
- bf->bf_lastbf = bf;
-- ath_set_rates(vif, NULL, bf);
-+ ath_set_rates(vif, NULL, bf, false);
- ath_buf_set_rate(sc, bf, &info, fi->framelen, false);
- duration += info.rates[0].PktDuration;
- if (bf_tail)
-@@ -2946,7 +2961,7 @@ int ath9k_tx99_send(struct ath_softc *sc
- return -EINVAL;
- }
-
-- ath_set_rates(sc->tx99_vif, NULL, bf);
-+ ath_set_rates(sc->tx99_vif, NULL, bf, false);
-
- ath9k_hw_set_desc_link(sc->sc_ah, bf->bf_desc, bf->bf_daddr);
- ath9k_hw_tx99_start(sc->sc_ah, txctl->txq->axq_qnum);
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sat, 14 May 2016 14:51:02 +0200
-Subject: [PATCH] Revert "ath9k: interpret requested txpower in EIRP
- domain"
-
-This reverts commit 71f5137bf010c6faffab50c0ec15374c59c4a411.
----
-
---- a/drivers/net/wireless/ath/ath9k/hw.c
-+++ b/drivers/net/wireless/ath/ath9k/hw.c
-@@ -2935,7 +2935,8 @@ void ath9k_hw_apply_txpower(struct ath_h
- {
- struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
- struct ieee80211_channel *channel;
-- int chan_pwr, new_pwr;
-+ int chan_pwr, new_pwr, max_gain;
-+ int ant_gain, ant_reduction = 0;
-
- if (!chan)
- return;
-@@ -2943,10 +2944,15 @@ void ath9k_hw_apply_txpower(struct ath_h
- channel = chan->chan;
- chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
- new_pwr = min_t(int, chan_pwr, reg->power_limit);
-+ max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
-+
-+ ant_gain = get_antenna_gain(ah, chan);
-+ if (ant_gain > max_gain)
-+ ant_reduction = ant_gain - max_gain;
-
- ah->eep_ops->set_txpower(ah, chan,
- ath9k_regd_get_ctl(reg, chan),
-- get_antenna_gain(ah, chan), new_pwr, test);
-+ ant_reduction, new_pwr, test);
- }
-
- void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
+++ /dev/null
-From: Janusz Dziedzic <janusz.dziedzic@tieto.com>
-Date: Fri, 19 Feb 2016 11:01:49 +0100
-Subject: [PATCH] mac80211: add hdrlen to ieee80211_tx_data
-
-Add hdrlen to ieee80211_tx_data and use this
-when wep/ccmd/tkip. This is preparation for
-aligned4 code.
-
-Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
----
-
---- a/net/mac80211/ieee80211_i.h
-+++ b/net/mac80211/ieee80211_i.h
-@@ -177,6 +177,7 @@ struct ieee80211_tx_data {
- struct ieee80211_tx_rate rate;
-
- unsigned int flags;
-+ unsigned int hdrlen;
- };
-
-
---- a/net/mac80211/tx.c
-+++ b/net/mac80211/tx.c
-@@ -921,7 +921,7 @@ ieee80211_tx_h_fragment(struct ieee80211
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct ieee80211_hdr *hdr = (void *)skb->data;
- int frag_threshold = tx->local->hw.wiphy->frag_threshold;
-- int hdrlen;
-+ int hdrlen = tx->hdrlen;
- int fragnum;
-
- /* no matter what happens, tx->skb moves to tx->skbs */
-@@ -942,8 +942,6 @@ ieee80211_tx_h_fragment(struct ieee80211
- if (WARN_ON(info->flags & IEEE80211_TX_CTL_AMPDU))
- return TX_DROP;
-
-- hdrlen = ieee80211_hdrlen(hdr->frame_control);
--
- /* internal error, why isn't DONTFRAG set? */
- if (WARN_ON(skb->len + FCS_LEN <= frag_threshold))
- return TX_DROP;
-@@ -1175,6 +1173,8 @@ ieee80211_tx_prepare(struct ieee80211_su
-
- hdr = (struct ieee80211_hdr *) skb->data;
-
-+ tx->hdrlen = ieee80211_hdrlen(hdr->frame_control);
-+
- if (likely(sta)) {
- if (!IS_ERR(sta))
- tx->sta = sta;
-@@ -3468,6 +3468,7 @@ begin:
- tx.local = local;
- tx.skb = skb;
- tx.sdata = vif_to_sdata(info->control.vif);
-+ tx.hdrlen = ieee80211_padded_hdrlen(hw, hdr->frame_control);
-
- if (txq->sta)
- tx.sta = container_of(txq->sta, struct sta_info, sta);
-@@ -3796,6 +3797,7 @@ ieee80211_build_data_template(struct iee
- hdr = (void *)skb->data;
- tx.sta = sta_info_get(sdata, hdr->addr1);
- tx.skb = skb;
-+ tx.hdrlen = ieee80211_padded_hdrlen(&tx.local->hw, hdr->frame_control);
-
- if (ieee80211_tx_h_select_key(&tx) != TX_CONTINUE) {
- rcu_read_unlock();
---- a/net/mac80211/util.c
-+++ b/net/mac80211/util.c
-@@ -1232,6 +1232,7 @@ void ieee80211_send_auth(struct ieee8021
- struct ieee80211_local *local = sdata->local;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
-+ unsigned int hdrlen;
- int err;
-
- /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
-@@ -1255,8 +1256,10 @@ void ieee80211_send_auth(struct ieee8021
- skb_put_data(skb, extra, extra_len);
-
- if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
-+ hdrlen = ieee80211_hdrlen(mgmt->frame_control);
- mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
-- err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
-+ err = ieee80211_wep_encrypt(local, skb, hdrlen, key,
-+ key_len, key_idx);
- WARN_ON(err);
- }
-
---- a/net/mac80211/wep.c
-+++ b/net/mac80211/wep.c
-@@ -89,11 +89,11 @@ static void ieee80211_wep_get_iv(struct
-
- static u8 *ieee80211_wep_add_iv(struct ieee80211_local *local,
- struct sk_buff *skb,
-+ unsigned int hdrlen,
- int keylen, int keyidx)
- {
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-- unsigned int hdrlen;
- u8 *newhdr;
-
- hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
-@@ -101,7 +101,6 @@ static u8 *ieee80211_wep_add_iv(struct i
- if (WARN_ON(skb_headroom(skb) < IEEE80211_WEP_IV_LEN))
- return NULL;
-
-- hdrlen = ieee80211_hdrlen(hdr->frame_control);
- newhdr = skb_push(skb, IEEE80211_WEP_IV_LEN);
- memmove(newhdr, newhdr + IEEE80211_WEP_IV_LEN, hdrlen);
-
-@@ -160,6 +159,7 @@ int ieee80211_wep_encrypt_data(struct cr
- */
- int ieee80211_wep_encrypt(struct ieee80211_local *local,
- struct sk_buff *skb,
-+ unsigned int hdrlen,
- const u8 *key, int keylen, int keyidx)
- {
- u8 *iv;
-@@ -169,7 +169,7 @@ int ieee80211_wep_encrypt(struct ieee802
- if (WARN_ON(skb_tailroom(skb) < IEEE80211_WEP_ICV_LEN))
- return -1;
-
-- iv = ieee80211_wep_add_iv(local, skb, keylen, keyidx);
-+ iv = ieee80211_wep_add_iv(local, skb, hdrlen, keylen, keyidx);
- if (!iv)
- return -1;
-
-@@ -307,13 +307,14 @@ static int wep_encrypt_skb(struct ieee80
- struct ieee80211_key_conf *hw_key = info->control.hw_key;
-
- if (!hw_key) {
-- if (ieee80211_wep_encrypt(tx->local, skb, tx->key->conf.key,
-+ if (ieee80211_wep_encrypt(tx->local, skb, tx->hdrlen,
-+ tx->key->conf.key,
- tx->key->conf.keylen,
- tx->key->conf.keyidx))
- return -1;
- } else if ((hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV) ||
- (hw_key->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE)) {
-- if (!ieee80211_wep_add_iv(tx->local, skb,
-+ if (!ieee80211_wep_add_iv(tx->local, skb, tx->hdrlen,
- tx->key->conf.keylen,
- tx->key->conf.keyidx))
- return -1;
---- a/net/mac80211/wep.h
-+++ b/net/mac80211/wep.h
-@@ -22,6 +22,7 @@ int ieee80211_wep_encrypt_data(struct cr
- size_t klen, u8 *data, size_t data_len);
- int ieee80211_wep_encrypt(struct ieee80211_local *local,
- struct sk_buff *skb,
-+ unsigned int hdrlen,
- const u8 *key, int keylen, int keyidx);
- int ieee80211_wep_decrypt_data(struct crypto_cipher *tfm, u8 *rc4key,
- size_t klen, u8 *data, size_t data_len);
---- a/net/mac80211/wpa.c
-+++ b/net/mac80211/wpa.c
-@@ -44,7 +44,7 @@ ieee80211_tx_h_michael_mic_add(struct ie
- skb->len < 24 || !ieee80211_is_data_present(hdr->frame_control))
- return TX_CONTINUE;
-
-- hdrlen = ieee80211_hdrlen(hdr->frame_control);
-+ hdrlen = tx->hdrlen;
- if (skb->len < hdrlen)
- return TX_DROP;
-
-@@ -187,7 +187,6 @@ mic_fail_no_key:
-
- static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
- {
-- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- struct ieee80211_key *key = tx->key;
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- unsigned int hdrlen;
-@@ -202,7 +201,7 @@ static int tkip_encrypt_skb(struct ieee8
- return 0;
- }
-
-- hdrlen = ieee80211_hdrlen(hdr->frame_control);
-+ hdrlen = tx->hdrlen;
- len = skb->len - hdrlen;
-
- if (info->control.hw_key)
-@@ -420,7 +419,7 @@ static int ccmp_encrypt_skb(struct ieee8
- return 0;
- }
-
-- hdrlen = ieee80211_hdrlen(hdr->frame_control);
-+ hdrlen = tx->hdrlen;
- len = skb->len - hdrlen;
-
- if (info->control.hw_key)
-@@ -653,7 +652,7 @@ static int gcmp_encrypt_skb(struct ieee8
- return 0;
- }
-
-- hdrlen = ieee80211_hdrlen(hdr->frame_control);
-+ hdrlen = tx->hdrlen;
- len = skb->len - hdrlen;
-
- if (info->control.hw_key)
-@@ -793,7 +792,6 @@ static ieee80211_tx_result
- ieee80211_crypto_cs_encrypt(struct ieee80211_tx_data *tx,
- struct sk_buff *skb)
- {
-- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- struct ieee80211_key *key = tx->key;
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- int hdrlen;
-@@ -809,8 +807,7 @@ ieee80211_crypto_cs_encrypt(struct ieee8
- pskb_expand_head(skb, iv_len, 0, GFP_ATOMIC)))
- return TX_DROP;
-
-- hdrlen = ieee80211_hdrlen(hdr->frame_control);
--
-+ hdrlen = tx->hdrlen;
- pos = skb_push(skb, iv_len);
- memmove(pos, pos + iv_len, hdrlen);
-
+++ /dev/null
-From: Janusz Dziedzic <janusz.dziedzic@tieto.com>
-Date: Fri, 19 Feb 2016 11:01:50 +0100
-Subject: [PATCH] mac80211: add NEED_ALIGNED4_SKBS hw flag
-
-HW/driver should set NEED_ALIGNED4_SKBS flag in case
-require aligned skbs to four-byte boundaries.
-This affect only TX direction.
-
-Padding is added after ieee80211_hdr, before IV/LLC.
-
-Before we have to do memmove(hdrlen) twice in the
-dirver. Once before we pass this to HW and next
-in tx completion (to be sure monitor will report
-this tx frame correctly).
-
-With this patch we can skip this memmove() and save CPU.
-
-Currently this was tested with ath9k, both hw/sw crypt for
-wep/tkip/ccmp.
-
-Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
----
-
---- a/include/net/mac80211.h
-+++ b/include/net/mac80211.h
-@@ -2059,6 +2059,9 @@ struct ieee80211_txq {
- * @IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA: Hardware supports buffer STA on
- * TDLS links.
- *
-+ * @IEEE80211_HW_NEEDS_ALIGNED4_SKBS: Driver need aligned skbs to four-byte.
-+ * Padding will be added after ieee80211_hdr, before IV/LLC.
-+ *
- * @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays
- */
- enum ieee80211_hw_flags {
-@@ -2102,6 +2105,7 @@ enum ieee80211_hw_flags {
- IEEE80211_HW_REPORTS_LOW_ACK,
- IEEE80211_HW_SUPPORTS_TX_FRAG,
- IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA,
-+ IEEE80211_HW_NEEDS_ALIGNED4_SKBS,
-
- /* keep last, obviously */
- NUM_IEEE80211_HW_FLAGS
---- a/net/mac80211/debugfs.c
-+++ b/net/mac80211/debugfs.c
-@@ -212,6 +212,7 @@ static const char *hw_flag_names[] = {
- FLAG(REPORTS_LOW_ACK),
- FLAG(SUPPORTS_TX_FRAG),
- FLAG(SUPPORTS_TDLS_BUFFER_STA),
-+ FLAG(NEEDS_ALIGNED4_SKBS),
- #undef FLAG
- };
-
---- a/net/mac80211/ieee80211_i.h
-+++ b/net/mac80211/ieee80211_i.h
-@@ -1548,6 +1548,29 @@ ieee80211_vif_get_num_mcast_if(struct ie
- return -1;
- }
-
-+static inline unsigned int
-+ieee80211_hdr_padsize(struct ieee80211_hw *hw, unsigned int hdrlen)
-+{
-+ /*
-+ * While hdrlen is already aligned to two-byte boundaries,
-+ * simple check with & 2 will return correct padsize.
-+ */
-+ if (ieee80211_hw_check(hw, NEEDS_ALIGNED4_SKBS))
-+ return hdrlen & 2;
-+ return 0;
-+}
-+
-+static inline unsigned int
-+ieee80211_padded_hdrlen(struct ieee80211_hw *hw, __le16 fc)
-+{
-+ unsigned int hdrlen;
-+
-+ hdrlen = ieee80211_hdrlen(fc);
-+ hdrlen += ieee80211_hdr_padsize(hw, hdrlen);
-+
-+ return hdrlen;
-+}
-+
- u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
- struct ieee80211_rx_status *status,
- unsigned int mpdu_len,
---- a/net/mac80211/sta_info.h
-+++ b/net/mac80211/sta_info.h
-@@ -300,7 +300,7 @@ struct ieee80211_fast_tx {
- u8 hdr_len;
- u8 sa_offs, da_offs, pn_offs;
- u8 band;
-- u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV +
-+ u8 hdr[30 + 2 + 2 + IEEE80211_FAST_XMIT_MAX_IV +
- sizeof(rfc1042_header)] __aligned(2);
-
- struct rcu_head rcu_head;
---- a/net/mac80211/status.c
-+++ b/net/mac80211/status.c
-@@ -642,9 +642,22 @@ void ieee80211_tx_monitor(struct ieee802
- struct sk_buff *skb2;
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct ieee80211_sub_if_data *sdata;
-+ struct ieee80211_hdr *hdr = (void *)skb->data;
- struct net_device *prev_dev = NULL;
-+ unsigned int hdrlen, padsize;
- int rtap_len;
-
-+ /* Remove padding if was added */
-+ if (ieee80211_hw_check(&local->hw, NEEDS_ALIGNED4_SKBS)) {
-+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
-+ padsize = ieee80211_hdr_padsize(&local->hw, hdrlen);
-+
-+ if (padsize && skb->len > hdrlen + padsize) {
-+ memmove(skb->data + padsize, skb->data, hdrlen);
-+ skb_pull(skb, padsize);
-+ }
-+ }
-+
- /* send frame to monitor interfaces now */
- rtap_len = ieee80211_tx_radiotap_len(info);
- if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) {
---- a/net/mac80211/tkip.c
-+++ b/net/mac80211/tkip.c
-@@ -201,10 +201,12 @@ void ieee80211_get_tkip_p2k(struct ieee8
- {
- struct ieee80211_key *key = (struct ieee80211_key *)
- container_of(keyconf, struct ieee80211_key, conf);
-+ struct ieee80211_hw *hw = &key->local->hw;
- const u8 *tk = &key->conf.key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY];
- struct tkip_ctx *ctx = &key->u.tkip.tx;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
-- const u8 *data = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
-+ const u8 *data = (u8 *)hdr + ieee80211_padded_hdrlen(hw,
-+ hdr->frame_control);
- u32 iv32 = get_unaligned_le32(&data[4]);
- u16 iv16 = data[2] | (data[0] << 8);
-
---- a/net/mac80211/tx.c
-+++ b/net/mac80211/tx.c
-@@ -1172,8 +1172,7 @@ ieee80211_tx_prepare(struct ieee80211_su
- info->flags &= ~IEEE80211_TX_INTFL_NEED_TXPROCESSING;
-
- hdr = (struct ieee80211_hdr *) skb->data;
--
-- tx->hdrlen = ieee80211_hdrlen(hdr->frame_control);
-+ tx->hdrlen = ieee80211_padded_hdrlen(&local->hw, hdr->frame_control);
-
- if (likely(sta)) {
- if (!IS_ERR(sta))
-@@ -2184,7 +2183,7 @@ netdev_tx_t ieee80211_monitor_start_xmit
- goto fail;
-
- hdr = (struct ieee80211_hdr *)(skb->data + len_rthdr);
-- hdrlen = ieee80211_hdrlen(hdr->frame_control);
-+ hdrlen = ieee80211_padded_hdrlen(&local->hw, hdr->frame_control);
-
- if (skb->len < len_rthdr + hdrlen)
- goto fail;
-@@ -2402,7 +2401,7 @@ static struct sk_buff *ieee80211_build_h
- struct ieee80211_chanctx_conf *chanctx_conf;
- struct ieee80211_sub_if_data *ap_sdata;
- enum nl80211_band band;
-- int ret;
-+ int padsize, ret;
-
- if (IS_ERR(sta))
- sta = NULL;
-@@ -2622,6 +2621,9 @@ static struct sk_buff *ieee80211_build_h
- hdrlen += 2;
- }
-
-+ /* Check aligned4 skb required */
-+ padsize = ieee80211_hdr_padsize(&sdata->local->hw, hdrlen);
-+
- /*
- * Drop unicast frames to unauthorised stations unless they are
- * EAPOL frames from the local station.
-@@ -2702,6 +2704,7 @@ static struct sk_buff *ieee80211_build_h
-
- skb_pull(skb, skip_header_bytes);
- head_need = hdrlen + encaps_len + meshhdrlen - skb_headroom(skb);
-+ head_need += padsize;
-
- /*
- * So we need to modify the skb header and hence need a copy of
-@@ -2734,6 +2737,9 @@ static struct sk_buff *ieee80211_build_h
- memcpy(skb_push(skb, meshhdrlen), &mesh_hdr, meshhdrlen);
- #endif
-
-+ if (padsize)
-+ memset(skb_push(skb, padsize), 0, padsize);
-+
- if (ieee80211_is_data_qos(fc)) {
- __le16 *qos_control;
-
-@@ -2909,6 +2915,9 @@ void ieee80211_check_fast_xmit(struct st
- fc |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
- }
-
-+ /* Check aligned4 skb required */
-+ build.hdr_len += ieee80211_hdr_padsize(&local->hw, build.hdr_len);
-+
- /* We store the key here so there's no point in using rcu_dereference()
- * but that's fine because the code that changes the pointers will call
- * this function after doing so. For a single CPU that would be enough,
-@@ -3495,7 +3504,7 @@ begin:
-
- if (tx.key &&
- (tx.key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
-- pn_offs = ieee80211_hdrlen(hdr->frame_control);
-+ pn_offs = tx.hdrlen;
-
- ieee80211_xmit_fast_finish(sta->sdata, sta, pn_offs,
- tx.key, skb);
---- a/net/mac80211/util.c
-+++ b/net/mac80211/util.c
-@@ -1230,6 +1230,7 @@ void ieee80211_send_auth(struct ieee8021
- u32 tx_flags)
- {
- struct ieee80211_local *local = sdata->local;
-+ struct ieee80211_hw *hw = &local->hw;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- unsigned int hdrlen;
-@@ -1256,7 +1257,7 @@ void ieee80211_send_auth(struct ieee8021
- skb_put_data(skb, extra, extra_len);
-
- if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
-- hdrlen = ieee80211_hdrlen(mgmt->frame_control);
-+ hdrlen = ieee80211_padded_hdrlen(hw, mgmt->frame_control);
- mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
- err = ieee80211_wep_encrypt(local, skb, hdrlen, key,
- key_len, key_idx);
--- /dev/null
+From 9df7ddc3ed25b7d3473f117a0680b9418adb5753 Mon Sep 17 00:00:00 2001
+Message-Id: <9df7ddc3ed25b7d3473f117a0680b9418adb5753.1515610034.git.mschiffer@universe-factory.net>
+From: Matthias Schiffer <mschiffer@universe-factory.net>
+Date: Mon, 27 Nov 2017 18:56:22 +0100
+Subject: [PATCH 1/2] ath9k: move spectral scan support under a separate config
+ symbol
+
+At the moment, spectral scan support, and with it RELAY, is always enabled
+with ATH9K[_HTC]_DEBUGFS. Spectral scan support is currently the only user
+of RELAY in ath9k, and it unconditionally reserves a relay channel.
+
+Having debugfs support in ath9k is often useful even on very small embedded
+routers, where we'd rather like to avoid the code size and RAM usage of the
+relay support.
+
+Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
+Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
+---
+ drivers/net/wireless/ath/ath9k/Kconfig | 14 ++++++++++----
+ drivers/net/wireless/ath/ath9k/Makefile | 4 ++--
+ drivers/net/wireless/ath/ath9k/common-spectral.h | 4 ++--
+ 3 files changed, 14 insertions(+), 8 deletions(-)
+
+--- a/drivers/net/wireless/ath/ath9k/Kconfig
++++ b/drivers/net/wireless/ath/ath9k/Kconfig
+@@ -64,13 +64,12 @@ config ATH9K_DEBUGFS
+ depends on ATH9K && DEBUG_FS
+ select MAC80211_DEBUGFS
+ select ATH9K_COMMON_DEBUG
+- depends on RELAY
+ ---help---
+ Say Y, if you need access to ath9k's statistics for
+ interrupts, rate control, etc.
+
+- Also required for changing debug message flags at run time.
+- As well as access to the FFT/spectral data and TX99.
++ Also required for changing debug message flags at run time and for
++ TX99.
+
+ config ATH9K_STATION_STATISTICS
+ bool "Detailed station statistics"
+@@ -181,7 +180,6 @@ config ATH9K_HTC_DEBUGFS
+ bool "Atheros ath9k_htc debugging"
+ depends on ATH9K_HTC && DEBUG_FS
+ select ATH9K_COMMON_DEBUG
+- depends on RELAY
+ ---help---
+ Say Y, if you need access to ath9k_htc's statistics.
+ As well as access to the FFT/spectral data.
+@@ -197,3 +195,11 @@ config ATH9K_HWRNG
+
+ Say Y, feeds the entropy directly from the WiFi driver to the input
+ pool.
++
++config ATH9K_COMMON_SPECTRAL
++ bool "Atheros ath9k/ath9k_htc spectral scan support"
++ depends on ATH9K_DEBUGFS || ATH9K_HTC_DEBUGFS
++ depends on RELAY
++ default n
++ ---help---
++ Say Y to enable access to the FFT/spectral data via debugfs.
+--- a/drivers/net/wireless/ath/ath9k/Makefile
++++ b/drivers/net/wireless/ath/ath9k/Makefile
+@@ -61,8 +61,8 @@ ath9k_common-y:= common.o \
+ common-init.o \
+ common-beacon.o \
+
+-ath9k_common-$(CPTCFG_ATH9K_COMMON_DEBUG) += common-debug.o \
+- common-spectral.o
++ath9k_common-$(CPTCFG_ATH9K_COMMON_DEBUG) += common-debug.o
++ath9k_common-$(CPTCFG_ATH9K_COMMON_SPECTRAL) += common-spectral.o
+
+ ath9k_htc-y += htc_hst.o \
+ hif_usb.o \
+--- a/drivers/net/wireless/ath/ath9k/common-spectral.h
++++ b/drivers/net/wireless/ath/ath9k/common-spectral.h
+@@ -151,7 +151,7 @@ static inline u8 spectral_bitmap_weight(
+ return bins[0] & 0x3f;
+ }
+
+-#ifdef CPTCFG_ATH9K_COMMON_DEBUG
++#ifdef CPTCFG_ATH9K_COMMON_SPECTRAL
+ void ath9k_cmn_spectral_init_debug(struct ath_spec_scan_priv *spec_priv, struct dentry *debugfs_phy);
+ void ath9k_cmn_spectral_deinit_debug(struct ath_spec_scan_priv *spec_priv);
+
+@@ -183,6 +183,6 @@ static inline int ath_cmn_process_fft(st
+ {
+ return 0;
+ }
+-#endif /* CPTCFG_ATH9K_COMMON_DEBUG */
++#endif /* CPTCFG_ATH9K_COMMON_SPECTRAL */
+
+ #endif /* SPECTRAL_H */
+--- a/local-symbols
++++ b/local-symbols
+@@ -116,6 +116,7 @@ ATH9K_PCOEM=
+ ATH9K_HTC=
+ ATH9K_HTC_DEBUGFS=
+ ATH9K_HWRNG=
++ATH9K_COMMON_SPECTRAL=
+ CARL9170=
+ CARL9170_LEDS=
+ CARL9170_DEBUGFS=
+++ /dev/null
-From: Chaitanya T K <chaitanya.mgit@gmail.com>
-Date: Mon, 27 Jun 2016 15:23:26 +0530
-Subject: [PATCH] mac80211: minstrel: Enable STBC and LDPC for VHT Rates
-
-If peer support reception of STBC and LDPC, enable them for better
-performance.
-
-Signed-off-by: Chaitanya TK <chaitanya.mgit@gmail.com>
----
-
---- a/include/linux/ieee80211.h
-+++ b/include/linux/ieee80211.h
-@@ -1556,6 +1556,7 @@ struct ieee80211_vht_operation {
- #define IEEE80211_VHT_CAP_RXSTBC_3 0x00000300
- #define IEEE80211_VHT_CAP_RXSTBC_4 0x00000400
- #define IEEE80211_VHT_CAP_RXSTBC_MASK 0x00000700
-+#define IEEE80211_VHT_CAP_RXSTBC_SHIFT 8
- #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE 0x00000800
- #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE 0x00001000
- #define IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT 13
---- a/net/mac80211/rc80211_minstrel_ht.c
-+++ b/net/mac80211/rc80211_minstrel_ht.c
-@@ -1130,7 +1130,7 @@ minstrel_ht_update_caps(void *priv, stru
- struct minstrel_ht_sta_priv *msp = priv_sta;
- struct minstrel_ht_sta *mi = &msp->ht;
- struct ieee80211_mcs_info *mcs = &sta->ht_cap.mcs;
-- u16 sta_cap = sta->ht_cap.cap;
-+ u16 ht_cap = sta->ht_cap.cap;
- struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
- struct sta_info *sinfo = container_of(sta, struct sta_info, sta);
- int use_vht;
-@@ -1138,6 +1138,7 @@ minstrel_ht_update_caps(void *priv, stru
- int ack_dur;
- int stbc;
- int i;
-+ bool ldpc = false;
-
- /* fall back to the old minstrel for legacy stations */
- if (!sta->ht_cap.ht_supported)
-@@ -1175,16 +1176,24 @@ minstrel_ht_update_caps(void *priv, stru
- }
- mi->sample_tries = 4;
-
-- /* TODO tx_flags for vht - ATM the RC API is not fine-grained enough */
- if (!use_vht) {
-- stbc = (sta_cap & IEEE80211_HT_CAP_RX_STBC) >>
-+ stbc = (ht_cap & IEEE80211_HT_CAP_RX_STBC) >>
- IEEE80211_HT_CAP_RX_STBC_SHIFT;
-- mi->tx_flags |= stbc << IEEE80211_TX_CTL_STBC_SHIFT;
-
-- if (sta_cap & IEEE80211_HT_CAP_LDPC_CODING)
-- mi->tx_flags |= IEEE80211_TX_CTL_LDPC;
-+ if (ht_cap & IEEE80211_HT_CAP_LDPC_CODING)
-+ ldpc = true;
-+ } else {
-+ stbc = (vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK) >>
-+ IEEE80211_VHT_CAP_RXSTBC_SHIFT;
-+
-+ if (vht_cap->cap & IEEE80211_VHT_CAP_RXLDPC)
-+ ldpc = true;
- }
-
-+ mi->tx_flags |= stbc << IEEE80211_TX_CTL_STBC_SHIFT;
-+ if (ldpc)
-+ mi->tx_flags |= IEEE80211_TX_CTL_LDPC;
-+
- for (i = 0; i < ARRAY_SIZE(mi->groups); i++) {
- u32 gflags = minstrel_mcs_groups[i].flags;
- int bw, nss;
-@@ -1197,10 +1206,10 @@ minstrel_ht_update_caps(void *priv, stru
-
- if (gflags & IEEE80211_TX_RC_SHORT_GI) {
- if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH) {
-- if (!(sta_cap & IEEE80211_HT_CAP_SGI_40))
-+ if (!(ht_cap & IEEE80211_HT_CAP_SGI_40))
- continue;
- } else {
-- if (!(sta_cap & IEEE80211_HT_CAP_SGI_20))
-+ if (!(ht_cap & IEEE80211_HT_CAP_SGI_20))
- continue;
- }
- }
--- /dev/null
+From 42e01cb9cb109fb0bb4743f6c54d6aa67ac39b61 Mon Sep 17 00:00:00 2001
+Message-Id: <42e01cb9cb109fb0bb4743f6c54d6aa67ac39b61.1515610034.git.mschiffer@universe-factory.net>
+In-Reply-To: <9df7ddc3ed25b7d3473f117a0680b9418adb5753.1515610034.git.mschiffer@universe-factory.net>
+References: <9df7ddc3ed25b7d3473f117a0680b9418adb5753.1515610034.git.mschiffer@universe-factory.net>
+From: Matthias Schiffer <mschiffer@universe-factory.net>
+Date: Mon, 27 Nov 2017 18:56:23 +0100
+Subject: [PATCH 2/2] ath10k: move spectral scan support under a separate
+ config symbol
+
+At the moment, spectral scan support, and with it RELAY, is always enabled
+with ATH10K_DEBUGFS. Spectral scan support is currently the only user of
+RELAY in ath10k, and it unconditionally reserves a relay channel.
+
+Having debugfs support in ath10k is often useful even on very small
+embedded routers, where we'd rather like to avoid the code size and RAM
+usage of the relay support. While ath10k-based devices usually have more
+resources than ath9k-based ones, it makes sense to keep the configuration
+symmetric to ath9k, so the same base kernel without RELAY can be used for
+both ath9k and ath10k hardware.
+
+Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
+Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
+---
+ drivers/net/wireless/ath/ath10k/Kconfig | 9 ++++++++-
+ drivers/net/wireless/ath/ath10k/Makefile | 2 +-
+ drivers/net/wireless/ath/ath10k/spectral.h | 4 ++--
+ 3 files changed, 11 insertions(+), 4 deletions(-)
+
+--- a/drivers/net/wireless/ath/ath10k/Kconfig
++++ b/drivers/net/wireless/ath/ath10k/Kconfig
+@@ -51,12 +51,19 @@ config ATH10K_DEBUG
+ config ATH10K_DEBUGFS
+ bool "Atheros ath10k debugfs support"
+ depends on ATH10K && DEBUG_FS
+- depends on RELAY
+ ---help---
+ Enabled debugfs support
+
+ If unsure, say Y to make it easier to debug problems.
+
++config ATH10K_SPECTRAL
++ bool "Atheros ath10k spectral scan support"
++ depends on ATH10K_DEBUGFS
++ depends on RELAY
++ default n
++ ---help---
++ Say Y to enable access to the FFT/spectral data via debugfs.
++
+ config ATH10K_TRACING
+ depends on !KERNEL_3_4
+ bool "Atheros ath10k tracing support"
+--- a/drivers/net/wireless/ath/ath10k/Makefile
++++ b/drivers/net/wireless/ath/ath10k/Makefile
+@@ -14,7 +14,7 @@ ath10k_core-y += mac.o \
+ p2p.o \
+ swap.o
+
+-ath10k_core-$(CPTCFG_ATH10K_DEBUGFS) += spectral.o
++ath10k_core-$(CPTCFG_ATH10K_SPECTRAL) += spectral.o
+ ath10k_core-$(CPTCFG_NL80211_TESTMODE) += testmode.o
+ ath10k_core-$(CPTCFG_ATH10K_TRACING) += trace.o
+ ath10k_core-$(CPTCFG_ATH10K_THERMAL) += thermal.o
+--- a/drivers/net/wireless/ath/ath10k/spectral.h
++++ b/drivers/net/wireless/ath/ath10k/spectral.h
+@@ -44,7 +44,7 @@ enum ath10k_spectral_mode {
+ SPECTRAL_MANUAL,
+ };
+
+-#ifdef CPTCFG_ATH10K_DEBUGFS
++#ifdef CPTCFG_ATH10K_SPECTRAL
+
+ int ath10k_spectral_process_fft(struct ath10k *ar,
+ struct wmi_phyerr_ev_arg *phyerr,
+@@ -85,6 +85,6 @@ static inline void ath10k_spectral_destr
+ {
+ }
+
+-#endif /* CPTCFG_ATH10K_DEBUGFS */
++#endif /* CPTCFG_ATH10K_SPECTRAL */
+
+ #endif /* SPECTRAL_H */
+--- a/local-symbols
++++ b/local-symbols
+@@ -140,6 +140,7 @@ ATH10K_SDIO=
+ ATH10K_USB=
+ ATH10K_DEBUG=
+ ATH10K_DEBUGFS=
++ATH10K_SPECTRAL=
+ ATH10K_TRACING=
+ ATH10K_DFS_CERTIFIED=
+ WCN36XX=
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sun, 28 Aug 2016 13:13:01 +0200
-Subject: [PATCH] ath9k: fix moredata bit in PS buffered frame release
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -1674,6 +1674,22 @@ void ath_tx_aggr_wakeup(struct ath_softc
- }
- }
-
-+
-+static void
-+ath9k_set_moredata(struct ath_softc *sc, struct ath_buf *bf, bool val)
-+{
-+ struct ieee80211_hdr *hdr;
-+ u16 mask = cpu_to_le16(IEEE80211_FCTL_MOREDATA);
-+ u16 mask_val = mask * val;
-+
-+ hdr = (struct ieee80211_hdr *) bf->bf_mpdu->data;
-+ if ((hdr->frame_control & mask) != mask_val) {
-+ hdr->frame_control = (hdr->frame_control & ~mask) | mask_val;
-+ dma_sync_single_for_device(sc->dev, bf->bf_buf_addr,
-+ sizeof(*hdr), DMA_TO_DEVICE);
-+ }
-+}
-+
- void ath9k_release_buffered_frames(struct ieee80211_hw *hw,
- struct ieee80211_sta *sta,
- u16 tids, int nframes,
-@@ -1704,6 +1720,7 @@ void ath9k_release_buffered_frames(struc
- if (!bf)
- break;
-
-+ ath9k_set_moredata(sc, bf, true);
- list_add_tail(&bf->list, &bf_q);
- ath_set_rates(tid->an->vif, tid->an->sta, bf, true);
- if (bf_isampdu(bf)) {
-@@ -1727,6 +1744,9 @@ void ath9k_release_buffered_frames(struc
- if (list_empty(&bf_q))
- return;
-
-+ if (!more_data)
-+ ath9k_set_moredata(sc, bf_tail, false);
-+
- info = IEEE80211_SKB_CB(bf_tail->bf_mpdu);
- info->flags |= IEEE80211_TX_STATUS_EOSP;
-
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Wed, 17 Jan 2018 11:11:17 +0100
+Subject: [PATCH] ath9k: discard undersized packets
+
+Sometimes the hardware will push small packets that trigger a WARN_ON
+in mac80211. Discard them early to avoid this issue.
+
+Reported-by: Stijn Tintel <stijn@linux-ipv6.be>
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/recv.c
++++ b/drivers/net/wireless/ath/ath9k/recv.c
+@@ -826,9 +826,9 @@ static int ath9k_rx_skb_preprocess(struc
+ sc->rx.discard_next = false;
+
+ /*
+- * Discard zero-length packets.
++ * Discard zero-length packets and packets smaller than an ACK
+ */
+- if (!rx_stats->rs_datalen) {
++ if (rx_stats->rs_datalen < 10) {
+ RX_STAT_INC(rx_len_err);
+ goto corrupt;
+ }
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sun, 28 Aug 2016 13:13:42 +0200
-Subject: [PATCH] ath9k: clear potentially stale EOSP status bit in
- intermediate queues
-
-Prevents spurious ieee80211_sta_eosp calls.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -984,7 +984,8 @@ ath_tx_get_tid_subframe(struct ath_softc
- bf->bf_lastbf = bf;
-
- tx_info = IEEE80211_SKB_CB(skb);
-- tx_info->flags &= ~IEEE80211_TX_CTL_CLEAR_PS_FILT;
-+ tx_info->flags &= ~(IEEE80211_TX_CTL_CLEAR_PS_FILT |
-+ IEEE80211_TX_STATUS_EOSP);
-
- /*
- * No aggregation session is running, but there may be frames
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sun, 28 Aug 2016 13:23:27 +0200
-Subject: [PATCH] ath9k: report tx status on EOSP
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -86,7 +86,8 @@ static void ath_tx_status(struct ieee802
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct ieee80211_sta *sta = info->status.status_driver_data[0];
-
-- if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) {
-+ if (info->flags & (IEEE80211_TX_CTL_REQ_TX_STATUS |
-+ IEEE80211_TX_STATUS_EOSP)) {
- ieee80211_tx_status(hw, skb);
- return;
- }
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Tue, 30 Aug 2016 12:44:08 +0200
-Subject: [PATCH] ath9k: fix block-ack window tracking issues
-
-Ensure that a buffer gets tracked as part of the block-ack window as
-soon as it's dequeued from the tid for the first time. Ensure that
-double calls to ath_tx_addto_baw (e.g. on retransmission) don't cause
-any issues.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -62,7 +62,7 @@ static void ath_tx_rc_status(struct ath_
- struct ath_tx_status *ts, int nframes, int nbad,
- int txok);
- static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
-- int seqno);
-+ struct ath_buf *bf);
- static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc,
- struct ath_txq *txq,
- struct ath_atx_tid *tid,
-@@ -311,7 +311,7 @@ static void ath_tx_flush_tid(struct ath_
- }
-
- if (fi->baw_tracked) {
-- ath_tx_update_baw(sc, tid, bf->bf_state.seqno);
-+ ath_tx_update_baw(sc, tid, bf);
- sendbar = true;
- }
-
-@@ -327,10 +327,15 @@ static void ath_tx_flush_tid(struct ath_
- }
-
- static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
-- int seqno)
-+ struct ath_buf *bf)
- {
-+ struct ath_frame_info *fi = get_frame_info(bf->bf_mpdu);
-+ u16 seqno = bf->bf_state.seqno;
- int index, cindex;
-
-+ if (!fi->baw_tracked)
-+ return;
-+
- index = ATH_BA_INDEX(tid->seq_start, seqno);
- cindex = (tid->baw_head + index) & (ATH_TID_MAX_BUFS - 1);
-
-@@ -351,6 +356,9 @@ static void ath_tx_addto_baw(struct ath_
- u16 seqno = bf->bf_state.seqno;
- int index, cindex;
-
-+ if (fi->baw_tracked)
-+ return;
-+
- index = ATH_BA_INDEX(tid->seq_start, seqno);
- cindex = (tid->baw_head + index) & (ATH_TID_MAX_BUFS - 1);
- __set_bit(cindex, tid->tx_buf);
-@@ -627,7 +635,7 @@ static void ath_tx_complete_aggr(struct
- * complete the acked-ones/xretried ones; update
- * block-ack window
- */
-- ath_tx_update_baw(sc, tid, seqno);
-+ ath_tx_update_baw(sc, tid, bf);
-
- if (rc_update && (acked_cnt == 1 || txfail_cnt == 1)) {
- memcpy(tx_info->control.rates, rates, sizeof(rates));
-@@ -657,7 +665,7 @@ static void ath_tx_complete_aggr(struct
- * run out of tx buf.
- */
- if (!tbf) {
-- ath_tx_update_baw(sc, tid, seqno);
-+ ath_tx_update_baw(sc, tid, bf);
-
- ath_tx_complete_buf(sc, bf, txq,
- &bf_head, NULL, ts,
-@@ -1026,11 +1034,14 @@ ath_tx_get_tid_subframe(struct ath_softc
-
- INIT_LIST_HEAD(&bf_head);
- list_add(&bf->list, &bf_head);
-- ath_tx_update_baw(sc, tid, seqno);
-+ ath_tx_update_baw(sc, tid, bf);
- ath_tx_complete_buf(sc, bf, txq, &bf_head, NULL, &ts, 0);
- continue;
- }
-
-+ if (bf_isampdu(bf))
-+ ath_tx_addto_baw(sc, tid, bf);
-+
- return bf;
- }
-
-@@ -1088,8 +1099,6 @@ ath_tx_form_aggr(struct ath_softc *sc, s
- bf->bf_next = NULL;
-
- /* link buffers of this frame to the aggregate */
-- if (!fi->baw_tracked)
-- ath_tx_addto_baw(sc, tid, bf);
- bf->bf_state.ndelim = ndelim;
-
- list_add_tail(&bf->list, bf_q);
-@@ -1725,10 +1734,8 @@ void ath9k_release_buffered_frames(struc
- ath9k_set_moredata(sc, bf, true);
- list_add_tail(&bf->list, &bf_q);
- ath_set_rates(tid->an->vif, tid->an->sta, bf, true);
-- if (bf_isampdu(bf)) {
-- ath_tx_addto_baw(sc, tid, bf);
-+ if (bf_isampdu(bf))
- bf->bf_state.bf_type &= ~BUF_AGGR;
-- }
- if (bf_tail)
- bf_tail->bf_next = bf;
-
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Wed, 22 Mar 2017 20:37:04 +0100
-Subject: [PATCH] ath9k_hw: fix channel maximum power level test
-
-The tx power applied by set_txpower is limited by the CTL (conformance
-test limit) entries in the EEPROM. These can change based on the user
-configured regulatory domain.
-Depending on the EEPROM data this can cause the tx power to become too
-limited, if the original regdomain CTLs impose lowr limits than the CTLs
-of the user configured regdomain.
-
-To fix this issue, set the initial channel limits without any CTL
-restrictions and only apply the CTL at run time when setting the channel
-and the real tx power.
-
-Cc: stable@vger.kernel.org
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/wireless/ath/ath9k/hw.c
-+++ b/drivers/net/wireless/ath/ath9k/hw.c
-@@ -2937,10 +2937,14 @@ void ath9k_hw_apply_txpower(struct ath_h
- struct ieee80211_channel *channel;
- int chan_pwr, new_pwr, max_gain;
- int ant_gain, ant_reduction = 0;
-+ u16 ctl = NO_CTL;
-
- if (!chan)
- return;
-
-+ if (!test)
-+ ctl = ath9k_regd_get_ctl(reg, chan);
-+
- channel = chan->chan;
- chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
- new_pwr = min_t(int, chan_pwr, reg->power_limit);
-@@ -2950,9 +2954,7 @@ void ath9k_hw_apply_txpower(struct ath_h
- if (ant_gain > max_gain)
- ant_reduction = ant_gain - max_gain;
-
-- ah->eep_ops->set_txpower(ah, chan,
-- ath9k_regd_get_ctl(reg, chan),
-- ant_reduction, new_pwr, test);
-+ ah->eep_ops->set_txpower(ah, chan, ctl, ant_reduction, new_pwr, test);
- }
-
- void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Wed, 19 Jul 2017 08:49:31 +0200
-Subject: [PATCH] ath9k: adjust tx power reduction for US regulatory
- domain
-
-FCC regulatory rules allow for up to 3 dBi antenna gain. Account for
-this in the EEPROM based tx power reduction code.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/wireless/ath/ath9k/hw.c
-+++ b/drivers/net/wireless/ath/ath9k/hw.c
-@@ -2954,6 +2954,10 @@ void ath9k_hw_apply_txpower(struct ath_h
- if (ant_gain > max_gain)
- ant_reduction = ant_gain - max_gain;
-
-+ /* FCC allows maximum antenna gain of 3 dBi */
-+ if (reg->region == NL80211_DFS_FCC)
-+ ant_reduction = max_t(int, ant_reduction - 6, 0);
-+
- ah->eep_ops->set_txpower(ah, chan, ctl, ant_reduction, new_pwr, test);
- }
-
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sun, 23 Jul 2017 14:58:22 +0200
-Subject: [PATCH] ath9k: fix more-data flag for buffered multicast
- packets
-
-The flag needs to be cleared for the last packet in the list, not the
-first one. Fixes some issues with multicast packet loss for powersave
-clients connected to an ath9k AP.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -2451,7 +2451,6 @@ void ath_tx_cabq(struct ieee80211_hw *hw
- .txq = sc->beacon.cabq
- };
- struct ath_tx_info info = {};
-- struct ieee80211_hdr *hdr;
- struct ath_buf *bf_tail = NULL;
- struct ath_buf *bf;
- LIST_HEAD(bf_q);
-@@ -2495,15 +2494,10 @@ void ath_tx_cabq(struct ieee80211_hw *hw
- if (list_empty(&bf_q))
- return;
-
-- bf = list_first_entry(&bf_q, struct ath_buf, list);
-- hdr = (struct ieee80211_hdr *) bf->bf_mpdu->data;
--
-- if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) {
-- hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA);
-- dma_sync_single_for_device(sc->dev, bf->bf_buf_addr,
-- sizeof(*hdr), DMA_TO_DEVICE);
-- }
-+ bf = list_last_entry(&bf_q, struct ath_buf, list);
-+ ath9k_set_moredata(sc, bf, false);
-
-+ bf = list_first_entry(&bf_q, struct ath_buf, list);
- ath_txq_lock(sc, txctl.txq);
- ath_tx_fill_desc(sc, bf, txctl.txq, 0);
- ath_tx_txqaddbuf(sc, txctl.txq, &bf_q, false);
+++ /dev/null
-From: dave taht <dave@taht.net>
-Date: Wed, 5 Oct 2016 20:09:15 -0700
-Subject: [PATCH] Revert "ath10k: disable wake_tx_queue for older
- devices"
-
-This reverts commit 4ca1807815aa6801aaced7fdefa9edacc2521767
-in the hope that we've fixed all the performance problems now.
----
-
---- a/drivers/net/wireless/ath/ath10k/mac.c
-+++ b/drivers/net/wireless/ath/ath10k/mac.c
-@@ -8319,15 +8319,6 @@ int ath10k_mac_register(struct ath10k *a
- ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
- }
-
-- /* Current wake_tx_queue implementation imposes a significant
-- * performance penalty in some setups. The tx scheduling code needs
-- * more work anyway so disable the wake_tx_queue unless firmware
-- * supports the pull-push mechanism.
-- */
-- if (!test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL,
-- ar->running_fw->fw_file.fw_features))
-- ar->ops->wake_tx_queue = NULL;
--
- ret = ath10k_mac_init_rd(ar);
- if (ret) {
- ath10k_err(ar, "failed to derive regdom: %d\n", ret);
+++ /dev/null
-From: Brian Norris <briannorris@chromium.org>
-Date: Thu, 19 Oct 2017 11:45:19 -0700
-Subject: [PATCH] ath10k: fix build errors with !CONFIG_PM
-
-Build errors have been reported with CONFIG_PM=n:
-
-drivers/net/wireless/ath/ath10k/pci.c:3416:8: error: implicit
-declaration of function 'ath10k_pci_suspend'
-[-Werror=implicit-function-declaration]
-
-drivers/net/wireless/ath/ath10k/pci.c:3428:8: error: implicit
-declaration of function 'ath10k_pci_resume'
-[-Werror=implicit-function-declaration]
-
-These are caused by the combination of the following two commits:
-
-6af1de2e4ec4 ("ath10k: mark PM functions as __maybe_unused")
-96378bd2c6cd ("ath10k: fix core PCI suspend when WoWLAN is supported but
-disabled")
-
-Both build fine on their own.
-
-But now that ath10k_pci_pm_{suspend,resume}() is compiled
-unconditionally, we should also compile ath10k_pci_{suspend,resume}()
-unconditionally.
-
-And drop the #ifdef around ath10k_pci_hif_{suspend,resume}() too; they
-are trivial (empty), so we're not saving much space by compiling them
-out. And the alternatives would be to sprinkle more __maybe_unused, or
-spread the #ifdef's further.
-
-Build tested with the following combinations:
-CONFIG_PM=y && CONFIG_PM_SLEEP=y
-CONFIG_PM=y && CONFIG_PM_SLEEP=n
-CONFIG_PM=n
-
-Fixes: 96378bd2c6cd ("ath10k: fix core PCI suspend when WoWLAN is supported but disabled")
-Fixes: 096ad2a15fd8 ("Merge branch 'ath-next'")
-Signed-off-by: Brian Norris <briannorris@chromium.org>
-Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
----
-
---- a/drivers/net/wireless/ath/ath10k/pci.c
-+++ b/drivers/net/wireless/ath/ath10k/pci.c
-@@ -2577,8 +2577,6 @@ void ath10k_pci_hif_power_down(struct at
- */
- }
-
--#ifdef CONFIG_PM
--
- static int ath10k_pci_hif_suspend(struct ath10k *ar)
- {
- /* Nothing to do; the important stuff is in the driver suspend. */
-@@ -2627,7 +2625,6 @@ static int ath10k_pci_resume(struct ath1
-
- return ret;
- }
--#endif
-
- static bool ath10k_pci_validate_cal(void *data, size_t size)
- {
-@@ -2782,10 +2779,8 @@ static const struct ath10k_hif_ops ath10
- .power_down = ath10k_pci_hif_power_down,
- .read32 = ath10k_pci_read32,
- .write32 = ath10k_pci_write32,
--#ifdef CONFIG_PM
- .suspend = ath10k_pci_hif_suspend,
- .resume = ath10k_pci_hif_resume,
--#endif
- .fetch_cal_eeprom = ath10k_pci_hif_fetch_cal_eeprom,
- };
-
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Fri, 9 Feb 2018 19:46:54 +0100
+Subject: [PATCH] mac80211: round IEEE80211_TX_STATUS_HEADROOM up to multiple
+ of 4
+
+This ensures that mac80211 allocated management frames are properly
+aligned, which makes copying them more efficient.
+For instance, mt76 uses iowrite32_copy to copy beacon frames to beacon
+template memory on the chip.
+Misaligned 32-bit accesses cause CPU exceptions on MIPS and should be
+avoided.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/include/net/mac80211.h
++++ b/include/net/mac80211.h
+@@ -4145,7 +4145,7 @@ void ieee80211_sta_uapsd_trigger(struct
+ * The TX headroom reserved by mac80211 for its own tx_status functions.
+ * This is enough for the radiotap header.
+ */
+-#define IEEE80211_TX_STATUS_HEADROOM 14
++#define IEEE80211_TX_STATUS_HEADROOM ALIGN(14, 4)
+
+ /**
+ * ieee80211_sta_set_buffered - inform mac80211 about driver-buffered frames
+++ /dev/null
-From: Christian Lamparter <chunkeey@gmail.com>
-Date: Wed, 1 Nov 2017 21:01:57 +0100
-Subject: [PATCH] ath10k: fix recent bandwidth conversion bug
-
-The commit "cfg80211: make RATE_INFO_BW_20 the default" changed
-the index of RATE_INFO_BW_20, but the updates to ath10k missed
-the special bandwidth calculation case in
-ath10k_update_per_peer_tx_stats().
-
-Fixes: 842be75c77cb ("cfg80211: make RATE_INFO_BW_20 the default")
-Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
-Patchwork-Id: 10037035
-Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
----
-
---- a/drivers/net/wireless/ath/ath10k/htt_rx.c
-+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
-@@ -592,6 +592,9 @@ struct amsdu_subframe_hdr {
-
- #define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63)
-
-+static const u8 ath10k_bw_to_mac80211[] = { RATE_INFO_BW_20, RATE_INFO_BW_40,
-+ RATE_INFO_BW_80, RATE_INFO_BW_160 };
-+
- static void ath10k_htt_rx_h_rates(struct ath10k *ar,
- struct ieee80211_rx_status *status,
- struct htt_rx_desc *rxd)
-@@ -694,23 +697,7 @@ static void ath10k_htt_rx_h_rates(struct
- if (sgi)
- status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
-
-- switch (bw) {
-- /* 20MHZ */
-- case 0:
-- break;
-- /* 40MHZ */
-- case 1:
-- status->bw = RATE_INFO_BW_40;
-- break;
-- /* 80MHZ */
-- case 2:
-- status->bw = RATE_INFO_BW_80;
-- break;
-- case 3:
-- status->bw = RATE_INFO_BW_160;
-- break;
-- }
--
-+ status->bw = ath10k_bw_to_mac80211[bw];
- status->encoding = RX_ENC_VHT;
- break;
- default:
-@@ -2297,7 +2284,7 @@ ath10k_update_per_peer_tx_stats(struct a
- arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
-
- arsta->txrate.nss = txrate.nss;
-- arsta->txrate.bw = txrate.bw + RATE_INFO_BW_20;
-+ arsta->txrate.bw = ath10k_bw_to_mac80211[txrate.bw];
- }
-
- static void ath10k_htt_fetch_peer_stats(struct ath10k *ar,
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Fri, 23 Feb 2018 09:59:35 +0100
+Subject: [PATCH] mac80211: drop frames with unexpected DS bits from
+ fast-rx to slow path
+
+Fixes rx for 4-addr packets in AP mode
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/rx.c
++++ b/net/mac80211/rx.c
+@@ -3928,7 +3928,7 @@ static bool ieee80211_invoke_fast_rx(str
+ if ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_FROMDS |
+ IEEE80211_FCTL_TODS)) !=
+ fast_rx->expected_ds_bits)
+- goto drop;
++ return false;
+
+ /* assign the key to drop unencrypted frames (later)
+ * and strip the IV/MIC if necessary
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Fri, 23 Feb 2018 10:00:22 +0100
+Subject: [PATCH] mac80211: support AP 4-addr mode fast-rx
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/rx.c
++++ b/net/mac80211/rx.c
+@@ -3774,6 +3774,15 @@ void ieee80211_check_fast_rx(struct sta_
+ !(sdata->flags & IEEE80211_SDATA_DONT_BRIDGE_PACKETS) &&
+ (sdata->vif.type != NL80211_IFTYPE_AP_VLAN ||
+ !sdata->u.vlan.sta);
++
++ if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
++ sdata->u.vlan.sta) {
++ fastrx.expected_ds_bits |=
++ cpu_to_le16(IEEE80211_FCTL_FROMDS);
++ fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr4);
++ fastrx.internal_forward = 0;
++ }
++
+ break;
+ default:
+ goto clear;
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Fri, 23 Feb 2018 10:01:53 +0100
+Subject: [PATCH] mac80211: support fast-rx with incompatible PS
+ capabilities when PS is disabled
+
+When powersave is disabled for the interface, we can do fast-rx anyway.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/cfg.c
++++ b/net/mac80211/cfg.c
+@@ -2658,6 +2658,7 @@ static int ieee80211_set_power_mgmt(stru
+
+ ieee80211_recalc_ps(local);
+ ieee80211_recalc_ps_vif(sdata);
++ ieee80211_check_fast_rx_iface(sdata);
+
+ return 0;
+ }
+--- a/net/mac80211/rx.c
++++ b/net/mac80211/rx.c
+@@ -3741,12 +3741,7 @@ void ieee80211_check_fast_rx(struct sta_
+ /* 4-addr is harder to deal with, later maybe */
+ if (sdata->u.mgd.use_4addr)
+ goto clear;
+- /* software powersave is a huge mess, avoid all of it */
+- if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
+- goto clear;
+- if (ieee80211_hw_check(&local->hw, SUPPORTS_PS) &&
+- !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
+- goto clear;
++
+ if (sta->sta.tdls) {
+ fastrx.da_offs = offsetof(struct ieee80211_hdr, addr1);
+ fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr2);
+@@ -3758,6 +3753,16 @@ void ieee80211_check_fast_rx(struct sta_
+ fastrx.expected_ds_bits =
+ cpu_to_le16(IEEE80211_FCTL_FROMDS);
+ }
++
++ if (!sdata->u.mgd.powersave)
++ break;
++
++ /* software powersave is a huge mess, avoid all of it */
++ if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
++ goto clear;
++ if (ieee80211_hw_check(&local->hw, SUPPORTS_PS) &&
++ !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
++ goto clear;
+ break;
+ case NL80211_IFTYPE_AP_VLAN:
+ case NL80211_IFTYPE_AP:
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Fri, 23 Feb 2018 10:05:08 +0100
+Subject: [PATCH] mac80211: support station 4-addr mode fast-rx
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/rx.c
++++ b/net/mac80211/rx.c
+@@ -3738,10 +3738,6 @@ void ieee80211_check_fast_rx(struct sta_
+
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_STATION:
+- /* 4-addr is harder to deal with, later maybe */
+- if (sdata->u.mgd.use_4addr)
+- goto clear;
+-
+ if (sta->sta.tdls) {
+ fastrx.da_offs = offsetof(struct ieee80211_hdr, addr1);
+ fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr2);
+@@ -3754,6 +3750,13 @@ void ieee80211_check_fast_rx(struct sta_
+ cpu_to_le16(IEEE80211_FCTL_FROMDS);
+ }
+
++ if (sdata->u.mgd.use_4addr && !sta->sta.tdls) {
++ fastrx.expected_ds_bits |=
++ cpu_to_le16(IEEE80211_FCTL_TODS);
++ fastrx.da_offs = offsetof(struct ieee80211_hdr, addr3);
++ fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr4);
++ }
++
+ if (!sdata->u.mgd.powersave)
+ break;
+
+++ /dev/null
-From: Johannes Berg <johannes.berg@intel.com>
-Date: Mon, 20 Nov 2017 17:01:44 +0100
-Subject: [PATCH] mac80211: properly free requested-but-not-started TX agg
- sessions
-
-When deleting a station or otherwise tearing down all aggregation
-sessions, make sure to delete requested but not yet started ones,
-to avoid the following scenario:
-
- * session is requested, added to tid_start_tx[]
- * ieee80211_ba_session_work() runs, gets past BLOCK_BA check
- * ieee80211_sta_tear_down_BA_sessions() runs, locks &sta->ampdu_mlme.mtx,
- e.g. while deleting the station - deleting all active sessions
- * ieee80211_ba_session_work() continues since tear down flushes it, and
- calls ieee80211_tx_ba_session_handle_start() for the new session, arms
- the timer for it
- * station deletion continues to __cleanup_single_sta() and frees the
- session struct, while the timer is armed
-
-Reported-by: Fengguang Wu <fengguang.wu@intel.com>
-Signed-off-by: Johannes Berg <johannes.berg@intel.com>
----
-
---- a/net/mac80211/agg-tx.c
-+++ b/net/mac80211/agg-tx.c
-@@ -330,6 +330,11 @@ int ___ieee80211_stop_tx_ba_session(stru
-
- spin_lock_bh(&sta->lock);
-
-+ /* free struct pending for start, if present */
-+ tid_tx = sta->ampdu_mlme.tid_start_tx[tid];
-+ kfree(tid_tx);
-+ sta->ampdu_mlme.tid_start_tx[tid] = NULL;
-+
- tid_tx = rcu_dereference_protected_tid_tx(sta, tid);
- if (!tid_tx) {
- spin_unlock_bh(&sta->lock);
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Mon, 26 Feb 2018 22:09:29 +0100
+Subject: [PATCH] mac80211: support A-MSDU in fast-rx
+
+Only works if the IV was stripped from packets. Create a smaller
+variant of ieee80211_rx_h_amsdu, which bypasses checks already done
+within the fast-rx context.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/rx.c
++++ b/net/mac80211/rx.c
+@@ -2358,39 +2358,17 @@ ieee80211_deliver_skb(struct ieee80211_r
+ }
+
+ static ieee80211_rx_result debug_noinline
+-ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
++__ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx, u8 data_offset)
+ {
+ struct net_device *dev = rx->sdata->dev;
+ struct sk_buff *skb = rx->skb;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ __le16 fc = hdr->frame_control;
+ struct sk_buff_head frame_list;
+- struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);
+ struct ethhdr ethhdr;
+ const u8 *check_da = ethhdr.h_dest, *check_sa = ethhdr.h_source;
+
+- if (unlikely(!ieee80211_is_data(fc)))
+- return RX_CONTINUE;
+-
+- if (unlikely(!ieee80211_is_data_present(fc)))
+- return RX_DROP_MONITOR;
+-
+- if (!(status->rx_flags & IEEE80211_RX_AMSDU))
+- return RX_CONTINUE;
+-
+ if (unlikely(ieee80211_has_a4(hdr->frame_control))) {
+- switch (rx->sdata->vif.type) {
+- case NL80211_IFTYPE_AP_VLAN:
+- if (!rx->sdata->u.vlan.sta)
+- return RX_DROP_UNUSABLE;
+- break;
+- case NL80211_IFTYPE_STATION:
+- if (!rx->sdata->u.mgd.use_4addr)
+- return RX_DROP_UNUSABLE;
+- break;
+- default:
+- return RX_DROP_UNUSABLE;
+- }
+ check_da = NULL;
+ check_sa = NULL;
+ } else switch (rx->sdata->vif.type) {
+@@ -2410,15 +2388,13 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx
+ break;
+ }
+
+- if (is_multicast_ether_addr(hdr->addr1))
+- return RX_DROP_UNUSABLE;
+-
+ skb->dev = dev;
+ __skb_queue_head_init(&frame_list);
+
+ if (ieee80211_data_to_8023_exthdr(skb, ðhdr,
+ rx->sdata->vif.addr,
+- rx->sdata->vif.type))
++ rx->sdata->vif.type,
++ data_offset))
+ return RX_DROP_UNUSABLE;
+
+ ieee80211_amsdu_to_8023s(skb, &frame_list, dev->dev_addr,
+@@ -2440,6 +2416,44 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx
+ return RX_QUEUED;
+ }
+
++static ieee80211_rx_result debug_noinline
++ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
++{
++ struct sk_buff *skb = rx->skb;
++ struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
++ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
++ __le16 fc = hdr->frame_control;
++
++ if (!(status->rx_flags & IEEE80211_RX_AMSDU))
++ return RX_CONTINUE;
++
++ if (unlikely(!ieee80211_is_data(fc)))
++ return RX_CONTINUE;
++
++ if (unlikely(!ieee80211_is_data_present(fc)))
++ return RX_DROP_MONITOR;
++
++ if (unlikely(ieee80211_has_a4(hdr->frame_control))) {
++ switch (rx->sdata->vif.type) {
++ case NL80211_IFTYPE_AP_VLAN:
++ if (!rx->sdata->u.vlan.sta)
++ return RX_DROP_UNUSABLE;
++ break;
++ case NL80211_IFTYPE_STATION:
++ if (!rx->sdata->u.mgd.use_4addr)
++ return RX_DROP_UNUSABLE;
++ break;
++ default:
++ return RX_DROP_UNUSABLE;
++ }
++ }
++
++ if (is_multicast_ether_addr(hdr->addr1))
++ return RX_DROP_UNUSABLE;
++
++ return __ieee80211_rx_h_amsdu(rx, 0);
++}
++
+ #ifdef CPTCFG_MAC80211_MESH
+ static ieee80211_rx_result
+ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
+@@ -3889,7 +3903,8 @@ static bool ieee80211_invoke_fast_rx(str
+ struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
+ struct sta_info *sta = rx->sta;
+ int orig_len = skb->len;
+- int snap_offs = ieee80211_hdrlen(hdr->frame_control);
++ int hdrlen = ieee80211_hdrlen(hdr->frame_control);
++ int snap_offs = hdrlen;
+ struct {
+ u8 snap[sizeof(rfc1042_header)];
+ __be16 proto;
+@@ -3920,10 +3935,6 @@ static bool ieee80211_invoke_fast_rx(str
+ (status->flag & FAST_RX_CRYPT_FLAGS) != FAST_RX_CRYPT_FLAGS)
+ return false;
+
+- /* we don't deal with A-MSDU deaggregation here */
+- if (status->rx_flags & IEEE80211_RX_AMSDU)
+- return false;
+-
+ if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
+ return false;
+
+@@ -3955,21 +3966,24 @@ static bool ieee80211_invoke_fast_rx(str
+ snap_offs += IEEE80211_CCMP_HDR_LEN;
+ }
+
+- if (!pskb_may_pull(skb, snap_offs + sizeof(*payload)))
+- goto drop;
+- payload = (void *)(skb->data + snap_offs);
++ if (!(status->rx_flags & IEEE80211_RX_AMSDU)) {
++ if (!pskb_may_pull(skb, snap_offs + sizeof(*payload)))
++ goto drop;
+
+- if (!ether_addr_equal(payload->snap, fast_rx->rfc1042_hdr))
+- return false;
++ payload = (void *)(skb->data + snap_offs);
+
+- /* Don't handle these here since they require special code.
+- * Accept AARP and IPX even though they should come with a
+- * bridge-tunnel header - but if we get them this way then
+- * there's little point in discarding them.
+- */
+- if (unlikely(payload->proto == cpu_to_be16(ETH_P_TDLS) ||
+- payload->proto == fast_rx->control_port_protocol))
+- return false;
++ if (!ether_addr_equal(payload->snap, fast_rx->rfc1042_hdr))
++ return false;
++
++ /* Don't handle these here since they require special code.
++ * Accept AARP and IPX even though they should come with a
++ * bridge-tunnel header - but if we get them this way then
++ * there's little point in discarding them.
++ */
++ if (unlikely(payload->proto == cpu_to_be16(ETH_P_TDLS) ||
++ payload->proto == fast_rx->control_port_protocol))
++ return false;
++ }
+
+ /* after this point, don't punt to the slowpath! */
+
+@@ -3983,12 +3997,6 @@ static bool ieee80211_invoke_fast_rx(str
+ }
+
+ /* statistics part of ieee80211_rx_h_sta_process() */
+- stats->last_rx = jiffies;
+- stats->last_rate = sta_stats_encode_rate(status);
+-
+- stats->fragments++;
+- stats->packets++;
+-
+ if (!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {
+ stats->last_signal = status->signal;
+ if (!fast_rx->uses_rss)
+@@ -4017,6 +4025,20 @@ static bool ieee80211_invoke_fast_rx(str
+ if (rx->key && !ieee80211_has_protected(hdr->frame_control))
+ goto drop;
+
++ if (status->rx_flags & IEEE80211_RX_AMSDU) {
++ if (__ieee80211_rx_h_amsdu(rx, snap_offs - hdrlen) !=
++ RX_QUEUED)
++ goto drop;
++
++ return true;
++ }
++
++ stats->last_rx = jiffies;
++ stats->last_rate = sta_stats_encode_rate(status);
++
++ stats->fragments++;
++ stats->packets++;
++
+ /* do the header conversion - first grab the addresses */
+ ether_addr_copy(addrs.da, skb->data + fast_rx->da_offs);
+ ether_addr_copy(addrs.sa, skb->data + fast_rx->sa_offs);
+--- a/include/net/cfg80211.h
++++ b/include/net/cfg80211.h
+@@ -4331,10 +4331,12 @@ unsigned int ieee80211_get_mesh_hdrlen(s
+ * of it being pushed into the SKB
+ * @addr: the device MAC address
+ * @iftype: the virtual interface type
++ * @data_offset: offset of payload after the 802.11 header
+ * Return: 0 on success. Non-zero on error.
+ */
+ int ieee80211_data_to_8023_exthdr(struct sk_buff *skb, struct ethhdr *ehdr,
+- const u8 *addr, enum nl80211_iftype iftype);
++ const u8 *addr, enum nl80211_iftype iftype,
++ u8 data_offset);
+
+ /**
+ * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3
+@@ -4346,7 +4348,7 @@ int ieee80211_data_to_8023_exthdr(struct
+ static inline int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
+ enum nl80211_iftype iftype)
+ {
+- return ieee80211_data_to_8023_exthdr(skb, NULL, addr, iftype);
++ return ieee80211_data_to_8023_exthdr(skb, NULL, addr, iftype, 0);
+ }
+
+ /**
+--- a/net/wireless/util.c
++++ b/net/wireless/util.c
+@@ -419,7 +419,8 @@ unsigned int ieee80211_get_mesh_hdrlen(s
+ EXPORT_SYMBOL(ieee80211_get_mesh_hdrlen);
+
+ int ieee80211_data_to_8023_exthdr(struct sk_buff *skb, struct ethhdr *ehdr,
+- const u8 *addr, enum nl80211_iftype iftype)
++ const u8 *addr, enum nl80211_iftype iftype,
++ u8 data_offset)
+ {
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct {
+@@ -433,7 +434,7 @@ int ieee80211_data_to_8023_exthdr(struct
+ if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
+ return -1;
+
+- hdrlen = ieee80211_hdrlen(hdr->frame_control);
++ hdrlen = ieee80211_hdrlen(hdr->frame_control) + data_offset;
+ if (skb->len < hdrlen + 8)
+ return -1;
+
+++ /dev/null
-From 9df7ddc3ed25b7d3473f117a0680b9418adb5753 Mon Sep 17 00:00:00 2001
-Message-Id: <9df7ddc3ed25b7d3473f117a0680b9418adb5753.1515610034.git.mschiffer@universe-factory.net>
-From: Matthias Schiffer <mschiffer@universe-factory.net>
-Date: Mon, 27 Nov 2017 18:56:22 +0100
-Subject: [PATCH 1/2] ath9k: move spectral scan support under a separate config
- symbol
-
-At the moment, spectral scan support, and with it RELAY, is always enabled
-with ATH9K[_HTC]_DEBUGFS. Spectral scan support is currently the only user
-of RELAY in ath9k, and it unconditionally reserves a relay channel.
-
-Having debugfs support in ath9k is often useful even on very small embedded
-routers, where we'd rather like to avoid the code size and RAM usage of the
-relay support.
-
-Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
-Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
----
- drivers/net/wireless/ath/ath9k/Kconfig | 14 ++++++++++----
- drivers/net/wireless/ath/ath9k/Makefile | 4 ++--
- drivers/net/wireless/ath/ath9k/common-spectral.h | 4 ++--
- 3 files changed, 14 insertions(+), 8 deletions(-)
-
---- a/drivers/net/wireless/ath/ath9k/Kconfig
-+++ b/drivers/net/wireless/ath/ath9k/Kconfig
-@@ -64,13 +64,12 @@ config ATH9K_DEBUGFS
- depends on ATH9K && DEBUG_FS
- select MAC80211_DEBUGFS
- select ATH9K_COMMON_DEBUG
-- depends on RELAY
- ---help---
- Say Y, if you need access to ath9k's statistics for
- interrupts, rate control, etc.
-
-- Also required for changing debug message flags at run time.
-- As well as access to the FFT/spectral data and TX99.
-+ Also required for changing debug message flags at run time and for
-+ TX99.
-
- config ATH9K_STATION_STATISTICS
- bool "Detailed station statistics"
-@@ -181,7 +180,6 @@ config ATH9K_HTC_DEBUGFS
- bool "Atheros ath9k_htc debugging"
- depends on ATH9K_HTC && DEBUG_FS
- select ATH9K_COMMON_DEBUG
-- depends on RELAY
- ---help---
- Say Y, if you need access to ath9k_htc's statistics.
- As well as access to the FFT/spectral data.
-@@ -197,3 +195,11 @@ config ATH9K_HWRNG
-
- Say Y, feeds the entropy directly from the WiFi driver to the input
- pool.
-+
-+config ATH9K_COMMON_SPECTRAL
-+ bool "Atheros ath9k/ath9k_htc spectral scan support"
-+ depends on ATH9K_DEBUGFS || ATH9K_HTC_DEBUGFS
-+ depends on RELAY
-+ default n
-+ ---help---
-+ Say Y to enable access to the FFT/spectral data via debugfs.
---- a/drivers/net/wireless/ath/ath9k/Makefile
-+++ b/drivers/net/wireless/ath/ath9k/Makefile
-@@ -61,8 +61,8 @@ ath9k_common-y:= common.o \
- common-init.o \
- common-beacon.o \
-
--ath9k_common-$(CPTCFG_ATH9K_COMMON_DEBUG) += common-debug.o \
-- common-spectral.o
-+ath9k_common-$(CPTCFG_ATH9K_COMMON_DEBUG) += common-debug.o
-+ath9k_common-$(CPTCFG_ATH9K_COMMON_SPECTRAL) += common-spectral.o
-
- ath9k_htc-y += htc_hst.o \
- hif_usb.o \
---- a/drivers/net/wireless/ath/ath9k/common-spectral.h
-+++ b/drivers/net/wireless/ath/ath9k/common-spectral.h
-@@ -151,7 +151,7 @@ static inline u8 spectral_bitmap_weight(
- return bins[0] & 0x3f;
- }
-
--#ifdef CPTCFG_ATH9K_COMMON_DEBUG
-+#ifdef CPTCFG_ATH9K_COMMON_SPECTRAL
- void ath9k_cmn_spectral_init_debug(struct ath_spec_scan_priv *spec_priv, struct dentry *debugfs_phy);
- void ath9k_cmn_spectral_deinit_debug(struct ath_spec_scan_priv *spec_priv);
-
-@@ -183,6 +183,6 @@ static inline int ath_cmn_process_fft(st
- {
- return 0;
- }
--#endif /* CPTCFG_ATH9K_COMMON_DEBUG */
-+#endif /* CPTCFG_ATH9K_COMMON_SPECTRAL */
-
- #endif /* SPECTRAL_H */
---- a/local-symbols
-+++ b/local-symbols
-@@ -116,6 +116,7 @@ ATH9K_PCOEM=
- ATH9K_HTC=
- ATH9K_HTC_DEBUGFS=
- ATH9K_HWRNG=
-+ATH9K_COMMON_SPECTRAL=
- CARL9170=
- CARL9170_LEDS=
- CARL9170_DEBUGFS=
+++ /dev/null
-From 42e01cb9cb109fb0bb4743f6c54d6aa67ac39b61 Mon Sep 17 00:00:00 2001
-Message-Id: <42e01cb9cb109fb0bb4743f6c54d6aa67ac39b61.1515610034.git.mschiffer@universe-factory.net>
-In-Reply-To: <9df7ddc3ed25b7d3473f117a0680b9418adb5753.1515610034.git.mschiffer@universe-factory.net>
-References: <9df7ddc3ed25b7d3473f117a0680b9418adb5753.1515610034.git.mschiffer@universe-factory.net>
-From: Matthias Schiffer <mschiffer@universe-factory.net>
-Date: Mon, 27 Nov 2017 18:56:23 +0100
-Subject: [PATCH 2/2] ath10k: move spectral scan support under a separate
- config symbol
-
-At the moment, spectral scan support, and with it RELAY, is always enabled
-with ATH10K_DEBUGFS. Spectral scan support is currently the only user of
-RELAY in ath10k, and it unconditionally reserves a relay channel.
-
-Having debugfs support in ath10k is often useful even on very small
-embedded routers, where we'd rather like to avoid the code size and RAM
-usage of the relay support. While ath10k-based devices usually have more
-resources than ath9k-based ones, it makes sense to keep the configuration
-symmetric to ath9k, so the same base kernel without RELAY can be used for
-both ath9k and ath10k hardware.
-
-Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
-Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
----
- drivers/net/wireless/ath/ath10k/Kconfig | 9 ++++++++-
- drivers/net/wireless/ath/ath10k/Makefile | 2 +-
- drivers/net/wireless/ath/ath10k/spectral.h | 4 ++--
- 3 files changed, 11 insertions(+), 4 deletions(-)
-
---- a/drivers/net/wireless/ath/ath10k/Kconfig
-+++ b/drivers/net/wireless/ath/ath10k/Kconfig
-@@ -51,12 +51,19 @@ config ATH10K_DEBUG
- config ATH10K_DEBUGFS
- bool "Atheros ath10k debugfs support"
- depends on ATH10K && DEBUG_FS
-- depends on RELAY
- ---help---
- Enabled debugfs support
-
- If unsure, say Y to make it easier to debug problems.
-
-+config ATH10K_SPECTRAL
-+ bool "Atheros ath10k spectral scan support"
-+ depends on ATH10K_DEBUGFS
-+ depends on RELAY
-+ default n
-+ ---help---
-+ Say Y to enable access to the FFT/spectral data via debugfs.
-+
- config ATH10K_TRACING
- depends on !KERNEL_3_4
- bool "Atheros ath10k tracing support"
---- a/drivers/net/wireless/ath/ath10k/Makefile
-+++ b/drivers/net/wireless/ath/ath10k/Makefile
-@@ -14,7 +14,7 @@ ath10k_core-y += mac.o \
- p2p.o \
- swap.o
-
--ath10k_core-$(CPTCFG_ATH10K_DEBUGFS) += spectral.o
-+ath10k_core-$(CPTCFG_ATH10K_SPECTRAL) += spectral.o
- ath10k_core-$(CPTCFG_NL80211_TESTMODE) += testmode.o
- ath10k_core-$(CPTCFG_ATH10K_TRACING) += trace.o
- ath10k_core-$(CPTCFG_ATH10K_THERMAL) += thermal.o
---- a/drivers/net/wireless/ath/ath10k/spectral.h
-+++ b/drivers/net/wireless/ath/ath10k/spectral.h
-@@ -44,7 +44,7 @@ enum ath10k_spectral_mode {
- SPECTRAL_MANUAL,
- };
-
--#ifdef CPTCFG_ATH10K_DEBUGFS
-+#ifdef CPTCFG_ATH10K_SPECTRAL
-
- int ath10k_spectral_process_fft(struct ath10k *ar,
- struct wmi_phyerr_ev_arg *phyerr,
-@@ -85,6 +85,6 @@ static inline void ath10k_spectral_destr
- {
- }
-
--#endif /* CPTCFG_ATH10K_DEBUGFS */
-+#endif /* CPTCFG_ATH10K_SPECTRAL */
-
- #endif /* SPECTRAL_H */
---- a/local-symbols
-+++ b/local-symbols
-@@ -140,6 +140,7 @@ ATH10K_SDIO=
- ATH10K_USB=
- ATH10K_DEBUG=
- ATH10K_DEBUGFS=
-+ATH10K_SPECTRAL=
- ATH10K_TRACING=
- ATH10K_DFS_CERTIFIED=
- WCN36XX=
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Wed, 17 Jan 2018 11:11:17 +0100
-Subject: [PATCH] ath9k: discard undersized packets
-
-Sometimes the hardware will push small packets that trigger a WARN_ON
-in mac80211. Discard them early to avoid this issue.
-
-Reported-by: Stijn Tintel <stijn@linux-ipv6.be>
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/net/wireless/ath/ath9k/recv.c
-+++ b/drivers/net/wireless/ath/ath9k/recv.c
-@@ -826,9 +826,9 @@ static int ath9k_rx_skb_preprocess(struc
- sc->rx.discard_next = false;
-
- /*
-- * Discard zero-length packets.
-+ * Discard zero-length packets and packets smaller than an ACK
- */
-- if (!rx_stats->rs_datalen) {
-+ if (rx_stats->rs_datalen < 10) {
- RX_STAT_INC(rx_len_err);
- goto corrupt;
- }
+++ /dev/null
-From: Johannes Berg <johannes.berg@intel.com>
-Date: Thu, 4 Jan 2018 15:51:53 +0100
-Subject: [PATCH] mac80211: mesh: drop frames appearing to be from us
-
-If there are multiple mesh stations with the same MAC address,
-they will both get confused and start throwing warnings.
-
-Obviously in this case nothing can actually work anyway, so just
-drop frames that look like they're from ourselves early on.
-
-Reported-by: Gui Iribarren <gui@altermundi.net>
-Signed-off-by: Johannes Berg <johannes.berg@intel.com>
----
-
---- a/net/mac80211/rx.c
-+++ b/net/mac80211/rx.c
-@@ -3632,6 +3632,8 @@ static bool ieee80211_accept_frame(struc
- }
- return true;
- case NL80211_IFTYPE_MESH_POINT:
-+ if (ether_addr_equal(sdata->vif.addr, hdr->addr2))
-+ return false;
- if (multicast)
- return true;
- return ether_addr_equal(sdata->vif.addr, hdr->addr1);
+++ /dev/null
-From: Johannes Berg <johannes.berg@intel.com>
-Date: Tue, 30 Jan 2018 13:17:38 +0100
-Subject: [PATCH] cfg80211: use only 1Mbps for basic rates in mesh
-
-Mesh used to use the mandatory rates as basic rates, but we got
-the calculation of mandatory rates wrong until some time ago.
-Fix this this broke interoperability with older versions since
-now more basic rates are required, and thus the MBSS isn't the
-same and the network stops working.
-
-Fix this by simply using only 1Mbps as the basic rate in 2.4GHz.
-Since the changed mandatory rates only affected 2.4GHz, this is
-all we need to make it work again.
-
-Reported-and-tested-by: Matthias Schiffer <mschiffer@universe-factory.net>
-Fixes: 1bd773c077de ("wireless: set correct mandatory rate flags")
-Signed-off-by: Johannes Berg <johannes.berg@intel.com>
----
- net/wireless/mesh.c | 25 ++++++++++++++++++++++---
- 1 file changed, 22 insertions(+), 3 deletions(-)
-
---- a/net/wireless/mesh.c
-+++ b/net/wireless/mesh.c
-@@ -169,9 +169,28 @@ int __cfg80211_join_mesh(struct cfg80211
- enum nl80211_bss_scan_width scan_width;
- struct ieee80211_supported_band *sband =
- rdev->wiphy.bands[setup->chandef.chan->band];
-- scan_width = cfg80211_chandef_to_scan_width(&setup->chandef);
-- setup->basic_rates = ieee80211_mandatory_rates(sband,
-- scan_width);
-+
-+ if (setup->chandef.chan->band == NL80211_BAND_2GHZ) {
-+ int i;
-+
-+ /*
-+ * Older versions selected the mandatory rates for
-+ * 2.4 GHz as well, but were broken in that only
-+ * 1 Mbps was regarded as a mandatory rate. Keep
-+ * using just 1 Mbps as the default basic rate for
-+ * mesh to be interoperable with older versions.
-+ */
-+ for (i = 0; i < sband->n_bitrates; i++) {
-+ if (sband->bitrates[i].bitrate == 10) {
-+ setup->basic_rates = BIT(i);
-+ break;
-+ }
-+ }
-+ } else {
-+ scan_width = cfg80211_chandef_to_scan_width(&setup->chandef);
-+ setup->basic_rates = ieee80211_mandatory_rates(sband,
-+ scan_width);
-+ }
- }
-
- err = cfg80211_chandef_dfs_required(&rdev->wiphy,
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Fri, 9 Feb 2018 19:46:54 +0100
-Subject: [PATCH] mac80211: round IEEE80211_TX_STATUS_HEADROOM up to multiple
- of 4
-
-This ensures that mac80211 allocated management frames are properly
-aligned, which makes copying them more efficient.
-For instance, mt76 uses iowrite32_copy to copy beacon frames to beacon
-template memory on the chip.
-Misaligned 32-bit accesses cause CPU exceptions on MIPS and should be
-avoided.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/include/net/mac80211.h
-+++ b/include/net/mac80211.h
-@@ -4149,7 +4149,7 @@ void ieee80211_sta_uapsd_trigger(struct
- * The TX headroom reserved by mac80211 for its own tx_status functions.
- * This is enough for the radiotap header.
- */
--#define IEEE80211_TX_STATUS_HEADROOM 14
-+#define IEEE80211_TX_STATUS_HEADROOM ALIGN(14, 4)
-
- /**
- * ieee80211_sta_set_buffered - inform mac80211 about driver-buffered frames
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sat, 10 Feb 2018 12:41:51 +0100
-Subject: [PATCH] mac80211: minstrel: remove unnecessary debugfs cleanup
- code
-
-debugfs entries are cleaned up by debugfs_remove_recursive already.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/rc80211_minstrel.c
-+++ b/net/mac80211/rc80211_minstrel.c
-@@ -689,8 +689,8 @@ minstrel_alloc(struct ieee80211_hw *hw,
-
- #ifdef CPTCFG_MAC80211_DEBUGFS
- mp->fixed_rate_idx = (u32) -1;
-- mp->dbg_fixed_rate = debugfs_create_u32("fixed_rate_idx",
-- S_IRUGO | S_IWUGO, debugfsdir, &mp->fixed_rate_idx);
-+ debugfs_create_u32("fixed_rate_idx", S_IRUGO | S_IWUGO, debugfsdir,
-+ &mp->fixed_rate_idx);
- #endif
-
- minstrel_init_cck_rates(mp);
-@@ -701,9 +701,6 @@ minstrel_alloc(struct ieee80211_hw *hw,
- static void
- minstrel_free(void *priv)
- {
--#ifdef CPTCFG_MAC80211_DEBUGFS
-- debugfs_remove(((struct minstrel_priv *)priv)->dbg_fixed_rate);
--#endif
- kfree(priv);
- }
-
-@@ -735,7 +732,6 @@ const struct rate_control_ops mac80211_m
- .free_sta = minstrel_free_sta,
- #ifdef CPTCFG_MAC80211_DEBUGFS
- .add_sta_debugfs = minstrel_add_sta_debugfs,
-- .remove_sta_debugfs = minstrel_remove_sta_debugfs,
- #endif
- .get_expected_throughput = minstrel_get_expected_throughput,
- };
---- a/net/mac80211/rc80211_minstrel.h
-+++ b/net/mac80211/rc80211_minstrel.h
-@@ -109,11 +109,6 @@ struct minstrel_sta_info {
-
- /* sampling table */
- u8 *sample_table;
--
--#ifdef CPTCFG_MAC80211_DEBUGFS
-- struct dentry *dbg_stats;
-- struct dentry *dbg_stats_csv;
--#endif
- };
-
- struct minstrel_priv {
-@@ -137,7 +132,6 @@ struct minstrel_priv {
- * - setting will be applied on next update
- */
- u32 fixed_rate_idx;
-- struct dentry *dbg_fixed_rate;
- #endif
- };
-
-@@ -156,7 +150,6 @@ minstrel_get_ewmsd10(struct minstrel_rat
-
- extern const struct rate_control_ops mac80211_minstrel;
- void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
--void minstrel_remove_sta_debugfs(void *priv, void *priv_sta);
-
- /* Recalculate success probabilities and counters for a given rate using EWMA */
- void minstrel_calc_rate_stats(struct minstrel_rate_stats *mrs);
---- a/net/mac80211/rc80211_minstrel_debugfs.c
-+++ b/net/mac80211/rc80211_minstrel_debugfs.c
-@@ -214,19 +214,7 @@ minstrel_add_sta_debugfs(void *priv, voi
- {
- struct minstrel_sta_info *mi = priv_sta;
-
-- mi->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, mi,
-- &minstrel_stat_fops);
--
-- mi->dbg_stats_csv = debugfs_create_file("rc_stats_csv", S_IRUGO, dir,
-- mi, &minstrel_stat_csv_fops);
--}
--
--void
--minstrel_remove_sta_debugfs(void *priv, void *priv_sta)
--{
-- struct minstrel_sta_info *mi = priv_sta;
--
-- debugfs_remove(mi->dbg_stats);
--
-- debugfs_remove(mi->dbg_stats_csv);
-+ 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
-@@ -1393,7 +1393,6 @@ static const struct rate_control_ops mac
- .free = minstrel_ht_free,
- #ifdef CPTCFG_MAC80211_DEBUGFS
- .add_sta_debugfs = minstrel_ht_add_sta_debugfs,
-- .remove_sta_debugfs = minstrel_ht_remove_sta_debugfs,
- #endif
- .get_expected_throughput = minstrel_ht_get_expected_throughput,
- };
---- a/net/mac80211/rc80211_minstrel_ht.h
-+++ b/net/mac80211/rc80211_minstrel_ht.h
-@@ -110,17 +110,12 @@ struct minstrel_ht_sta_priv {
- struct minstrel_ht_sta ht;
- struct minstrel_sta_info legacy;
- };
--#ifdef CPTCFG_MAC80211_DEBUGFS
-- struct dentry *dbg_stats;
-- struct dentry *dbg_stats_csv;
--#endif
- void *ratelist;
- void *sample_table;
- bool is_ht;
- };
-
- void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
--void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta);
- int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate,
- int prob_ewma);
-
---- a/net/mac80211/rc80211_minstrel_ht_debugfs.c
-+++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c
-@@ -303,17 +303,8 @@ minstrel_ht_add_sta_debugfs(void *priv,
- {
- struct minstrel_ht_sta_priv *msp = priv_sta;
-
-- msp->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, msp,
-- &minstrel_ht_stat_fops);
-- msp->dbg_stats_csv = debugfs_create_file("rc_stats_csv", S_IRUGO,
-- dir, msp, &minstrel_ht_stat_csv_fops);
--}
--
--void
--minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta)
--{
-- struct minstrel_ht_sta_priv *msp = priv_sta;
--
-- debugfs_remove(msp->dbg_stats);
-- debugfs_remove(msp->dbg_stats_csv);
-+ debugfs_create_file("rc_stats", S_IRUGO, dir, msp,
-+ &minstrel_ht_stat_fops);
-+ debugfs_create_file("rc_stats_csv", S_IRUGO, dir, msp,
-+ &minstrel_ht_stat_csv_fops);
- }
+++ /dev/null
-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)
- {
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sat, 10 Feb 2018 12:45:47 +0100
-Subject: [PATCH] mac80211: minstrel: reduce minstrel_mcs_groups size
-
-By storing a shift value for all duration values of a group, we can
-reduce precision by a neglegible amount to make it fit into a u16 value.
-This improves cache footprint and reduces size:
-
-Before:
- text data bss dec hex filename
- 10024 116 0 10140 279c rc80211_minstrel_ht.o
-
-After:
- text data bss dec hex filename
- 9368 116 0 9484 250c rc80211_minstrel_ht.o
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/rc80211_minstrel_ht.c
-+++ b/net/mac80211/rc80211_minstrel_ht.c
-@@ -52,22 +52,23 @@
- _streams - 1
-
- /* MCS rate information for an MCS group */
--#define MCS_GROUP(_streams, _sgi, _ht40) \
-+#define MCS_GROUP(_streams, _sgi, _ht40, _s) \
- [GROUP_IDX(_streams, _sgi, _ht40)] = { \
- .streams = _streams, \
-+ .shift = _s, \
- .flags = \
- IEEE80211_TX_RC_MCS | \
- (_sgi ? IEEE80211_TX_RC_SHORT_GI : 0) | \
- (_ht40 ? IEEE80211_TX_RC_40_MHZ_WIDTH : 0), \
- .duration = { \
-- MCS_DURATION(_streams, _sgi, _ht40 ? 54 : 26), \
-- MCS_DURATION(_streams, _sgi, _ht40 ? 108 : 52), \
-- MCS_DURATION(_streams, _sgi, _ht40 ? 162 : 78), \
-- MCS_DURATION(_streams, _sgi, _ht40 ? 216 : 104), \
-- MCS_DURATION(_streams, _sgi, _ht40 ? 324 : 156), \
-- MCS_DURATION(_streams, _sgi, _ht40 ? 432 : 208), \
-- MCS_DURATION(_streams, _sgi, _ht40 ? 486 : 234), \
-- MCS_DURATION(_streams, _sgi, _ht40 ? 540 : 260) \
-+ MCS_DURATION(_streams, _sgi, _ht40 ? 54 : 26) >> _s, \
-+ MCS_DURATION(_streams, _sgi, _ht40 ? 108 : 52) >> _s, \
-+ MCS_DURATION(_streams, _sgi, _ht40 ? 162 : 78) >> _s, \
-+ MCS_DURATION(_streams, _sgi, _ht40 ? 216 : 104) >> _s, \
-+ MCS_DURATION(_streams, _sgi, _ht40 ? 324 : 156) >> _s, \
-+ MCS_DURATION(_streams, _sgi, _ht40 ? 432 : 208) >> _s, \
-+ MCS_DURATION(_streams, _sgi, _ht40 ? 486 : 234) >> _s, \
-+ MCS_DURATION(_streams, _sgi, _ht40 ? 540 : 260) >> _s \
- } \
- }
-
-@@ -80,9 +81,10 @@
- #define BW2VBPS(_bw, r3, r2, r1) \
- (_bw == BW_80 ? r3 : _bw == BW_40 ? r2 : r1)
-
--#define VHT_GROUP(_streams, _sgi, _bw) \
-+#define VHT_GROUP(_streams, _sgi, _bw, _s) \
- [VHT_GROUP_IDX(_streams, _sgi, _bw)] = { \
- .streams = _streams, \
-+ .shift = _s, \
- .flags = \
- IEEE80211_TX_RC_VHT_MCS | \
- (_sgi ? IEEE80211_TX_RC_SHORT_GI : 0) | \
-@@ -90,25 +92,25 @@
- _bw == BW_40 ? IEEE80211_TX_RC_40_MHZ_WIDTH : 0), \
- .duration = { \
- MCS_DURATION(_streams, _sgi, \
-- BW2VBPS(_bw, 117, 54, 26)), \
-+ BW2VBPS(_bw, 117, 54, 26)) >> _s, \
- MCS_DURATION(_streams, _sgi, \
-- BW2VBPS(_bw, 234, 108, 52)), \
-+ BW2VBPS(_bw, 234, 108, 52)) >> _s, \
- MCS_DURATION(_streams, _sgi, \
-- BW2VBPS(_bw, 351, 162, 78)), \
-+ BW2VBPS(_bw, 351, 162, 78)) >> _s, \
- MCS_DURATION(_streams, _sgi, \
-- BW2VBPS(_bw, 468, 216, 104)), \
-+ BW2VBPS(_bw, 468, 216, 104)) >> _s, \
- MCS_DURATION(_streams, _sgi, \
-- BW2VBPS(_bw, 702, 324, 156)), \
-+ BW2VBPS(_bw, 702, 324, 156)) >> _s, \
- MCS_DURATION(_streams, _sgi, \
-- BW2VBPS(_bw, 936, 432, 208)), \
-+ BW2VBPS(_bw, 936, 432, 208)) >> _s, \
- MCS_DURATION(_streams, _sgi, \
-- BW2VBPS(_bw, 1053, 486, 234)), \
-+ BW2VBPS(_bw, 1053, 486, 234)) >> _s, \
- MCS_DURATION(_streams, _sgi, \
-- BW2VBPS(_bw, 1170, 540, 260)), \
-+ BW2VBPS(_bw, 1170, 540, 260)) >> _s, \
- MCS_DURATION(_streams, _sgi, \
-- BW2VBPS(_bw, 1404, 648, 312)), \
-+ BW2VBPS(_bw, 1404, 648, 312)) >> _s, \
- MCS_DURATION(_streams, _sgi, \
-- BW2VBPS(_bw, 1560, 720, 346)) \
-+ BW2VBPS(_bw, 1560, 720, 346)) >> _s \
- } \
- }
-
-@@ -121,19 +123,20 @@
- (CCK_DURATION((_bitrate > 10 ? 20 : 10), false, 60) + \
- CCK_DURATION(_bitrate, _short, AVG_PKT_SIZE))
-
--#define CCK_DURATION_LIST(_short) \
-- CCK_ACK_DURATION(10, _short), \
-- CCK_ACK_DURATION(20, _short), \
-- CCK_ACK_DURATION(55, _short), \
-- CCK_ACK_DURATION(110, _short)
-+#define CCK_DURATION_LIST(_short, _s) \
-+ CCK_ACK_DURATION(10, _short) >> _s, \
-+ CCK_ACK_DURATION(20, _short) >> _s, \
-+ CCK_ACK_DURATION(55, _short) >> _s, \
-+ CCK_ACK_DURATION(110, _short) >> _s
-
--#define CCK_GROUP \
-+#define CCK_GROUP(_s) \
- [MINSTREL_CCK_GROUP] = { \
- .streams = 0, \
- .flags = 0, \
-+ .shift = _s, \
- .duration = { \
-- CCK_DURATION_LIST(false), \
-- CCK_DURATION_LIST(true) \
-+ CCK_DURATION_LIST(false, _s), \
-+ CCK_DURATION_LIST(true, _s) \
- } \
- }
-
-@@ -151,47 +154,47 @@ MODULE_PARM_DESC(minstrel_vht_only,
- * BW -> SGI -> #streams
- */
- const struct mcs_group minstrel_mcs_groups[] = {
-- MCS_GROUP(1, 0, BW_20),
-- MCS_GROUP(2, 0, BW_20),
-- MCS_GROUP(3, 0, BW_20),
-+ MCS_GROUP(1, 0, BW_20, 5),
-+ MCS_GROUP(2, 0, BW_20, 4),
-+ MCS_GROUP(3, 0, BW_20, 4),
-
-- MCS_GROUP(1, 1, BW_20),
-- MCS_GROUP(2, 1, BW_20),
-- MCS_GROUP(3, 1, BW_20),
-+ MCS_GROUP(1, 1, BW_20, 5),
-+ MCS_GROUP(2, 1, BW_20, 4),
-+ MCS_GROUP(3, 1, BW_20, 4),
-
-- MCS_GROUP(1, 0, BW_40),
-- MCS_GROUP(2, 0, BW_40),
-- MCS_GROUP(3, 0, BW_40),
-+ MCS_GROUP(1, 0, BW_40, 4),
-+ MCS_GROUP(2, 0, BW_40, 4),
-+ MCS_GROUP(3, 0, BW_40, 4),
-
-- MCS_GROUP(1, 1, BW_40),
-- MCS_GROUP(2, 1, BW_40),
-- MCS_GROUP(3, 1, BW_40),
-+ MCS_GROUP(1, 1, BW_40, 4),
-+ MCS_GROUP(2, 1, BW_40, 4),
-+ MCS_GROUP(3, 1, BW_40, 4),
-
-- CCK_GROUP,
-+ CCK_GROUP(8),
-
-- VHT_GROUP(1, 0, BW_20),
-- VHT_GROUP(2, 0, BW_20),
-- VHT_GROUP(3, 0, BW_20),
-+ VHT_GROUP(1, 0, BW_20, 5),
-+ VHT_GROUP(2, 0, BW_20, 4),
-+ VHT_GROUP(3, 0, BW_20, 4),
-
-- VHT_GROUP(1, 1, BW_20),
-- VHT_GROUP(2, 1, BW_20),
-- VHT_GROUP(3, 1, BW_20),
-+ VHT_GROUP(1, 1, BW_20, 5),
-+ VHT_GROUP(2, 1, BW_20, 4),
-+ VHT_GROUP(3, 1, BW_20, 4),
-
-- VHT_GROUP(1, 0, BW_40),
-- VHT_GROUP(2, 0, BW_40),
-- VHT_GROUP(3, 0, BW_40),
-+ VHT_GROUP(1, 0, BW_40, 4),
-+ VHT_GROUP(2, 0, BW_40, 4),
-+ VHT_GROUP(3, 0, BW_40, 4),
-
-- VHT_GROUP(1, 1, BW_40),
-- VHT_GROUP(2, 1, BW_40),
-- VHT_GROUP(3, 1, BW_40),
-+ VHT_GROUP(1, 1, BW_40, 4),
-+ VHT_GROUP(2, 1, BW_40, 4),
-+ VHT_GROUP(3, 1, BW_40, 4),
-
-- VHT_GROUP(1, 0, BW_80),
-- VHT_GROUP(2, 0, BW_80),
-- VHT_GROUP(3, 0, BW_80),
-+ VHT_GROUP(1, 0, BW_80, 4),
-+ VHT_GROUP(2, 0, BW_80, 4),
-+ VHT_GROUP(3, 0, BW_80, 4),
-
-- VHT_GROUP(1, 1, BW_80),
-- VHT_GROUP(2, 1, BW_80),
-- VHT_GROUP(3, 1, BW_80),
-+ VHT_GROUP(1, 1, BW_80, 4),
-+ VHT_GROUP(2, 1, BW_80, 4),
-+ VHT_GROUP(3, 1, BW_80, 4),
- };
-
- static u8 sample_table[SAMPLE_COLUMNS][MCS_GROUP_RATES] __read_mostly;
-@@ -307,7 +310,8 @@ minstrel_ht_get_tp_avg(struct minstrel_h
- if (group != MINSTREL_CCK_GROUP)
- nsecs = 1000 * mi->overhead / MINSTREL_TRUNC(mi->avg_ampdu_len);
-
-- nsecs += minstrel_mcs_groups[group].duration[rate];
-+ nsecs += minstrel_mcs_groups[group].duration[rate] <<
-+ minstrel_mcs_groups[group].shift;
-
- /*
- * For the throughput calculation, limit the probability value to 90% to
-@@ -755,12 +759,19 @@ minstrel_ht_tx_status(void *priv, struct
- minstrel_ht_update_rates(mp, mi);
- }
-
-+static inline int
-+minstrel_get_duration(int index)
-+{
-+ const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
-+ unsigned int duration = group->duration[index % MCS_GROUP_RATES];
-+ return duration << group->shift;
-+}
-+
- static void
- minstrel_calc_retransmit(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
- int index)
- {
- struct minstrel_rate_stats *mrs;
-- const struct mcs_group *group;
- unsigned int tx_time, tx_time_rtscts, tx_time_data;
- unsigned int cw = mp->cw_min;
- unsigned int ctime = 0;
-@@ -779,8 +790,7 @@ minstrel_calc_retransmit(struct minstrel
- mrs->retry_count_rtscts = 2;
- mrs->retry_updated = true;
-
-- group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
-- tx_time_data = group->duration[index % MCS_GROUP_RATES] * ampdu_len / 1000;
-+ tx_time_data = minstrel_get_duration(index) * ampdu_len / 1000;
-
- /* Contention time for first 2 tries */
- ctime = (t_slot * cw) >> 1;
-@@ -874,20 +884,24 @@ minstrel_ht_get_max_amsdu_len(struct min
- int group = mi->max_prob_rate / MCS_GROUP_RATES;
- const struct mcs_group *g = &minstrel_mcs_groups[group];
- int rate = mi->max_prob_rate % MCS_GROUP_RATES;
-+ unsigned int duration;
-
- /* Disable A-MSDU if max_prob_rate is bad */
- if (mi->groups[group].rates[rate].prob_ewma < MINSTREL_FRAC(50, 100))
- return 1;
-
-+ duration = g->duration[rate];
-+ duration <<= g->shift;
-+
- /* If the rate is slower than single-stream MCS1, make A-MSDU limit small */
-- if (g->duration[rate] > MCS_DURATION(1, 0, 52))
-+ if (duration > MCS_DURATION(1, 0, 52))
- return 500;
-
- /*
- * If the rate is slower than single-stream MCS4, limit A-MSDU to usual
- * data packet size
- */
-- if (g->duration[rate] > MCS_DURATION(1, 0, 104))
-+ if (duration > MCS_DURATION(1, 0, 104))
- return 1600;
-
- /*
-@@ -895,7 +909,7 @@ minstrel_ht_get_max_amsdu_len(struct min
- * rate success probability is less than 75%, limit A-MSDU to twice the usual
- * data packet size
- */
-- if (g->duration[rate] > MCS_DURATION(1, 0, 260) ||
-+ if (duration > MCS_DURATION(1, 0, 260) ||
- (minstrel_ht_get_prob_ewma(mi, mi->max_tp_rate[0]) <
- MINSTREL_FRAC(75, 100)))
- return 3200;
-@@ -942,13 +956,6 @@ minstrel_ht_update_rates(struct minstrel
- rate_control_set_rates(mp->hw, mi->sta, rates);
- }
-
--static inline int
--minstrel_get_duration(int index)
--{
-- const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
-- return group->duration[index % MCS_GROUP_RATES];
--}
--
- static int
- minstrel_get_sample_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
- {
---- a/net/mac80211/rc80211_minstrel_ht.h
-+++ b/net/mac80211/rc80211_minstrel_ht.h
-@@ -33,9 +33,10 @@
- #define MCS_GROUP_RATES 10
-
- struct mcs_group {
-- u32 flags;
-- unsigned int streams;
-- unsigned int duration[MCS_GROUP_RATES];
-+ u16 flags;
-+ u8 streams;
-+ u8 shift;
-+ u16 duration[MCS_GROUP_RATES];
- };
-
- extern const struct mcs_group minstrel_mcs_groups[];
---- a/net/mac80211/rc80211_minstrel_ht_debugfs.c
-+++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c
-@@ -58,6 +58,7 @@ minstrel_ht_stats_dump(struct minstrel_h
- static const int bitrates[4] = { 10, 20, 55, 110 };
- int idx = i * MCS_GROUP_RATES + j;
- unsigned int prob_ewmsd;
-+ unsigned int duration;
-
- if (!(mi->supported[i] & BIT(j)))
- continue;
-@@ -95,7 +96,9 @@ minstrel_ht_stats_dump(struct minstrel_h
- p += sprintf(p, " %3u ", idx);
-
- /* tx_time[rate(i)] in usec */
-- tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000);
-+ duration = mg->duration[j];
-+ duration <<= mg->shift;
-+ tx_time = DIV_ROUND_CLOSEST(duration, 1000);
- p += sprintf(p, "%6u ", tx_time);
-
- tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
-@@ -204,6 +207,7 @@ minstrel_ht_stats_csv_dump(struct minstr
- static const int bitrates[4] = { 10, 20, 55, 110 };
- int idx = i * MCS_GROUP_RATES + j;
- unsigned int prob_ewmsd;
-+ unsigned int duration;
-
- if (!(mi->supported[i] & BIT(j)))
- continue;
-@@ -238,7 +242,10 @@ minstrel_ht_stats_csv_dump(struct minstr
- }
-
- p += sprintf(p, "%u,", idx);
-- tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000);
-+
-+ duration = mg->duration[j];
-+ duration <<= mg->shift;
-+ tx_time = DIV_ROUND_CLOSEST(duration, 1000);
- p += sprintf(p, "%u,", tx_time);
-
- tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sat, 10 Feb 2018 13:43:07 +0100
-Subject: [PATCH] mac80211: minstrel: fix using short preamble CCK rates on
- HT clients
-
-mi->supported[MINSTREL_CCK_GROUP] needs to be updated
-
-Fixes: 782dda00ab8e ("mac80211: minstrel_ht: move short preamble check out of get_rate")
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/rc80211_minstrel_ht.c
-+++ b/net/mac80211/rc80211_minstrel_ht.c
-@@ -1268,7 +1268,8 @@ minstrel_ht_update_caps(void *priv, stru
- goto use_legacy;
-
- if (test_sta_flag(sinfo, WLAN_STA_SHORT_PREAMBLE))
-- mi->cck_supported_short |= mi->cck_supported_short << 4;
-+ mi->supported[MINSTREL_CCK_GROUP] |=
-+ mi->cck_supported_short << 4;
-
- /* create an initial rate table with the lowest supported rates */
- minstrel_ht_update_stats(mp, mi);
+++ /dev/null
-From: =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= <toke@toke.dk>
-Date: Fri, 2 Feb 2018 11:36:45 +0100
-Subject: [PATCH] ath9k: Protect queue draining by rcu_read_lock()
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-When ath9k was switched over to use the mac80211 intermediate queues,
-node cleanup now drains the mac80211 queues. However, this call path is
-not protected by rcu_read_lock() as it was previously entirely internal
-to the driver which uses its own locking.
-
-This leads to a possible rcu_dereference() without holding
-rcu_read_lock(); but only if a station is cleaned up while having
-packets queued on the TXQ. Fix this by adding the rcu_read_lock() to the
-caller in ath9k.
-
-Fixes: 50f08edf9809 ("ath9k: Switch to using mac80211 intermediate software queues.")
-Cc: stable@vger.kernel.org
-Reported-by: Ben Greear <greearb@candelatech.com>
-Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
----
-
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -2930,6 +2930,8 @@ void ath_tx_node_cleanup(struct ath_soft
- struct ath_txq *txq;
- int tidno;
-
-+ rcu_read_lock();
-+
- for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) {
- tid = ath_node_to_tid(an, tidno);
- txq = tid->txq;
-@@ -2947,6 +2949,8 @@ void ath_tx_node_cleanup(struct ath_soft
- if (!an->sta)
- break; /* just one multicast ath_atx_tid */
- }
-+
-+ rcu_read_unlock();
- }
-
- #ifdef CPTCFG_ATH9K_TX99
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Fri, 23 Feb 2018 09:59:35 +0100
-Subject: [PATCH] mac80211: drop frames with unexpected DS bits from
- fast-rx to slow path
-
-Fixes rx for 4-addr packets in AP mode
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/rx.c
-+++ b/net/mac80211/rx.c
-@@ -3928,7 +3928,7 @@ static bool ieee80211_invoke_fast_rx(str
- if ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_FROMDS |
- IEEE80211_FCTL_TODS)) !=
- fast_rx->expected_ds_bits)
-- goto drop;
-+ return false;
-
- /* assign the key to drop unencrypted frames (later)
- * and strip the IV/MIC if necessary
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Fri, 23 Feb 2018 10:00:22 +0100
-Subject: [PATCH] mac80211: support AP 4-addr mode fast-rx
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/rx.c
-+++ b/net/mac80211/rx.c
-@@ -3774,6 +3774,15 @@ void ieee80211_check_fast_rx(struct sta_
- !(sdata->flags & IEEE80211_SDATA_DONT_BRIDGE_PACKETS) &&
- (sdata->vif.type != NL80211_IFTYPE_AP_VLAN ||
- !sdata->u.vlan.sta);
-+
-+ if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
-+ sdata->u.vlan.sta) {
-+ fastrx.expected_ds_bits |=
-+ cpu_to_le16(IEEE80211_FCTL_FROMDS);
-+ fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr4);
-+ fastrx.internal_forward = 0;
-+ }
-+
- break;
- default:
- goto clear;
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Fri, 23 Feb 2018 10:01:53 +0100
-Subject: [PATCH] mac80211: support fast-rx with incompatible PS
- capabilities when PS is disabled
-
-When powersave is disabled for the interface, we can do fast-rx anyway.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/cfg.c
-+++ b/net/mac80211/cfg.c
-@@ -2658,6 +2658,7 @@ static int ieee80211_set_power_mgmt(stru
-
- ieee80211_recalc_ps(local);
- ieee80211_recalc_ps_vif(sdata);
-+ ieee80211_check_fast_rx_iface(sdata);
-
- return 0;
- }
---- a/net/mac80211/rx.c
-+++ b/net/mac80211/rx.c
-@@ -3741,12 +3741,7 @@ void ieee80211_check_fast_rx(struct sta_
- /* 4-addr is harder to deal with, later maybe */
- if (sdata->u.mgd.use_4addr)
- goto clear;
-- /* software powersave is a huge mess, avoid all of it */
-- if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
-- goto clear;
-- if (ieee80211_hw_check(&local->hw, SUPPORTS_PS) &&
-- !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
-- goto clear;
-+
- if (sta->sta.tdls) {
- fastrx.da_offs = offsetof(struct ieee80211_hdr, addr1);
- fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr2);
-@@ -3758,6 +3753,16 @@ void ieee80211_check_fast_rx(struct sta_
- fastrx.expected_ds_bits =
- cpu_to_le16(IEEE80211_FCTL_FROMDS);
- }
-+
-+ if (!sdata->u.mgd.powersave)
-+ break;
-+
-+ /* software powersave is a huge mess, avoid all of it */
-+ if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
-+ goto clear;
-+ if (ieee80211_hw_check(&local->hw, SUPPORTS_PS) &&
-+ !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
-+ goto clear;
- break;
- case NL80211_IFTYPE_AP_VLAN:
- case NL80211_IFTYPE_AP:
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Fri, 23 Feb 2018 10:05:08 +0100
-Subject: [PATCH] mac80211: support station 4-addr mode fast-rx
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/rx.c
-+++ b/net/mac80211/rx.c
-@@ -3738,10 +3738,6 @@ void ieee80211_check_fast_rx(struct sta_
-
- switch (sdata->vif.type) {
- case NL80211_IFTYPE_STATION:
-- /* 4-addr is harder to deal with, later maybe */
-- if (sdata->u.mgd.use_4addr)
-- goto clear;
--
- if (sta->sta.tdls) {
- fastrx.da_offs = offsetof(struct ieee80211_hdr, addr1);
- fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr2);
-@@ -3754,6 +3750,13 @@ void ieee80211_check_fast_rx(struct sta_
- cpu_to_le16(IEEE80211_FCTL_FROMDS);
- }
-
-+ if (sdata->u.mgd.use_4addr && !sta->sta.tdls) {
-+ fastrx.expected_ds_bits |=
-+ cpu_to_le16(IEEE80211_FCTL_TODS);
-+ fastrx.da_offs = offsetof(struct ieee80211_hdr, addr3);
-+ fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr4);
-+ }
-+
- if (!sdata->u.mgd.powersave)
- break;
-
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Mon, 26 Feb 2018 22:09:29 +0100
-Subject: [PATCH] mac80211: support A-MSDU in fast-rx
-
-Only works if the IV was stripped from packets. Create a smaller
-variant of ieee80211_rx_h_amsdu, which bypasses checks already done
-within the fast-rx context.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/rx.c
-+++ b/net/mac80211/rx.c
-@@ -2358,39 +2358,17 @@ ieee80211_deliver_skb(struct ieee80211_r
- }
-
- static ieee80211_rx_result debug_noinline
--ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
-+__ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx, u8 data_offset)
- {
- struct net_device *dev = rx->sdata->dev;
- struct sk_buff *skb = rx->skb;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- __le16 fc = hdr->frame_control;
- struct sk_buff_head frame_list;
-- struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);
- struct ethhdr ethhdr;
- const u8 *check_da = ethhdr.h_dest, *check_sa = ethhdr.h_source;
-
-- if (unlikely(!ieee80211_is_data(fc)))
-- return RX_CONTINUE;
--
-- if (unlikely(!ieee80211_is_data_present(fc)))
-- return RX_DROP_MONITOR;
--
-- if (!(status->rx_flags & IEEE80211_RX_AMSDU))
-- return RX_CONTINUE;
--
- if (unlikely(ieee80211_has_a4(hdr->frame_control))) {
-- switch (rx->sdata->vif.type) {
-- case NL80211_IFTYPE_AP_VLAN:
-- if (!rx->sdata->u.vlan.sta)
-- return RX_DROP_UNUSABLE;
-- break;
-- case NL80211_IFTYPE_STATION:
-- if (!rx->sdata->u.mgd.use_4addr)
-- return RX_DROP_UNUSABLE;
-- break;
-- default:
-- return RX_DROP_UNUSABLE;
-- }
- check_da = NULL;
- check_sa = NULL;
- } else switch (rx->sdata->vif.type) {
-@@ -2410,15 +2388,13 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx
- break;
- }
-
-- if (is_multicast_ether_addr(hdr->addr1))
-- return RX_DROP_UNUSABLE;
--
- skb->dev = dev;
- __skb_queue_head_init(&frame_list);
-
- if (ieee80211_data_to_8023_exthdr(skb, ðhdr,
- rx->sdata->vif.addr,
-- rx->sdata->vif.type))
-+ rx->sdata->vif.type,
-+ data_offset))
- return RX_DROP_UNUSABLE;
-
- ieee80211_amsdu_to_8023s(skb, &frame_list, dev->dev_addr,
-@@ -2440,6 +2416,44 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx
- return RX_QUEUED;
- }
-
-+static ieee80211_rx_result debug_noinline
-+ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
-+{
-+ struct sk_buff *skb = rx->skb;
-+ struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
-+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
-+ __le16 fc = hdr->frame_control;
-+
-+ if (!(status->rx_flags & IEEE80211_RX_AMSDU))
-+ return RX_CONTINUE;
-+
-+ if (unlikely(!ieee80211_is_data(fc)))
-+ return RX_CONTINUE;
-+
-+ if (unlikely(!ieee80211_is_data_present(fc)))
-+ return RX_DROP_MONITOR;
-+
-+ if (unlikely(ieee80211_has_a4(hdr->frame_control))) {
-+ switch (rx->sdata->vif.type) {
-+ case NL80211_IFTYPE_AP_VLAN:
-+ if (!rx->sdata->u.vlan.sta)
-+ return RX_DROP_UNUSABLE;
-+ break;
-+ case NL80211_IFTYPE_STATION:
-+ if (!rx->sdata->u.mgd.use_4addr)
-+ return RX_DROP_UNUSABLE;
-+ break;
-+ default:
-+ return RX_DROP_UNUSABLE;
-+ }
-+ }
-+
-+ if (is_multicast_ether_addr(hdr->addr1))
-+ return RX_DROP_UNUSABLE;
-+
-+ return __ieee80211_rx_h_amsdu(rx, 0);
-+}
-+
- #ifdef CPTCFG_MAC80211_MESH
- static ieee80211_rx_result
- ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
-@@ -3889,7 +3903,8 @@ static bool ieee80211_invoke_fast_rx(str
- struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
- struct sta_info *sta = rx->sta;
- int orig_len = skb->len;
-- int snap_offs = ieee80211_hdrlen(hdr->frame_control);
-+ int hdrlen = ieee80211_hdrlen(hdr->frame_control);
-+ int snap_offs = hdrlen;
- struct {
- u8 snap[sizeof(rfc1042_header)];
- __be16 proto;
-@@ -3920,10 +3935,6 @@ static bool ieee80211_invoke_fast_rx(str
- (status->flag & FAST_RX_CRYPT_FLAGS) != FAST_RX_CRYPT_FLAGS)
- return false;
-
-- /* we don't deal with A-MSDU deaggregation here */
-- if (status->rx_flags & IEEE80211_RX_AMSDU)
-- return false;
--
- if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
- return false;
-
-@@ -3955,21 +3966,24 @@ static bool ieee80211_invoke_fast_rx(str
- snap_offs += IEEE80211_CCMP_HDR_LEN;
- }
-
-- if (!pskb_may_pull(skb, snap_offs + sizeof(*payload)))
-- goto drop;
-- payload = (void *)(skb->data + snap_offs);
-+ if (!(status->rx_flags & IEEE80211_RX_AMSDU)) {
-+ if (!pskb_may_pull(skb, snap_offs + sizeof(*payload)))
-+ goto drop;
-
-- if (!ether_addr_equal(payload->snap, fast_rx->rfc1042_hdr))
-- return false;
-+ payload = (void *)(skb->data + snap_offs);
-
-- /* Don't handle these here since they require special code.
-- * Accept AARP and IPX even though they should come with a
-- * bridge-tunnel header - but if we get them this way then
-- * there's little point in discarding them.
-- */
-- if (unlikely(payload->proto == cpu_to_be16(ETH_P_TDLS) ||
-- payload->proto == fast_rx->control_port_protocol))
-- return false;
-+ if (!ether_addr_equal(payload->snap, fast_rx->rfc1042_hdr))
-+ return false;
-+
-+ /* Don't handle these here since they require special code.
-+ * Accept AARP and IPX even though they should come with a
-+ * bridge-tunnel header - but if we get them this way then
-+ * there's little point in discarding them.
-+ */
-+ if (unlikely(payload->proto == cpu_to_be16(ETH_P_TDLS) ||
-+ payload->proto == fast_rx->control_port_protocol))
-+ return false;
-+ }
-
- /* after this point, don't punt to the slowpath! */
-
-@@ -3983,12 +3997,6 @@ static bool ieee80211_invoke_fast_rx(str
- }
-
- /* statistics part of ieee80211_rx_h_sta_process() */
-- stats->last_rx = jiffies;
-- stats->last_rate = sta_stats_encode_rate(status);
--
-- stats->fragments++;
-- stats->packets++;
--
- if (!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {
- stats->last_signal = status->signal;
- if (!fast_rx->uses_rss)
-@@ -4017,6 +4025,20 @@ static bool ieee80211_invoke_fast_rx(str
- if (rx->key && !ieee80211_has_protected(hdr->frame_control))
- goto drop;
-
-+ if (status->rx_flags & IEEE80211_RX_AMSDU) {
-+ if (__ieee80211_rx_h_amsdu(rx, snap_offs - hdrlen) !=
-+ RX_QUEUED)
-+ goto drop;
-+
-+ return true;
-+ }
-+
-+ stats->last_rx = jiffies;
-+ stats->last_rate = sta_stats_encode_rate(status);
-+
-+ stats->fragments++;
-+ stats->packets++;
-+
- /* do the header conversion - first grab the addresses */
- ether_addr_copy(addrs.da, skb->data + fast_rx->da_offs);
- ether_addr_copy(addrs.sa, skb->data + fast_rx->sa_offs);
---- a/include/net/cfg80211.h
-+++ b/include/net/cfg80211.h
-@@ -4331,10 +4331,12 @@ unsigned int ieee80211_get_mesh_hdrlen(s
- * of it being pushed into the SKB
- * @addr: the device MAC address
- * @iftype: the virtual interface type
-+ * @data_offset: offset of payload after the 802.11 header
- * Return: 0 on success. Non-zero on error.
- */
- int ieee80211_data_to_8023_exthdr(struct sk_buff *skb, struct ethhdr *ehdr,
-- const u8 *addr, enum nl80211_iftype iftype);
-+ const u8 *addr, enum nl80211_iftype iftype,
-+ u8 data_offset);
-
- /**
- * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3
-@@ -4346,7 +4348,7 @@ int ieee80211_data_to_8023_exthdr(struct
- static inline int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
- enum nl80211_iftype iftype)
- {
-- return ieee80211_data_to_8023_exthdr(skb, NULL, addr, iftype);
-+ return ieee80211_data_to_8023_exthdr(skb, NULL, addr, iftype, 0);
- }
-
- /**
---- a/net/wireless/util.c
-+++ b/net/wireless/util.c
-@@ -419,7 +419,8 @@ unsigned int ieee80211_get_mesh_hdrlen(s
- EXPORT_SYMBOL(ieee80211_get_mesh_hdrlen);
-
- int ieee80211_data_to_8023_exthdr(struct sk_buff *skb, struct ethhdr *ehdr,
-- const u8 *addr, enum nl80211_iftype iftype)
-+ const u8 *addr, enum nl80211_iftype iftype,
-+ u8 data_offset)
- {
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- struct {
-@@ -433,7 +434,7 @@ int ieee80211_data_to_8023_exthdr(struct
- if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
- return -1;
-
-- hdrlen = ieee80211_hdrlen(hdr->frame_control);
-+ hdrlen = ieee80211_hdrlen(hdr->frame_control) + data_offset;
- if (skb->len < hdrlen + 8)
- return -1;
-
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Thu, 1 Mar 2018 13:27:54 +0100
-Subject: [PATCH] mac80211: minstrel: fix CCK rate group streams value
-
-Fixes a harmless underflow issue when CCK rates are actively being used
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/rc80211_minstrel_ht.c
-+++ b/net/mac80211/rc80211_minstrel_ht.c
-@@ -131,7 +131,7 @@
-
- #define CCK_GROUP(_s) \
- [MINSTREL_CCK_GROUP] = { \
-- .streams = 0, \
-+ .streams = 1, \
- .flags = 0, \
- .shift = _s, \
- .duration = { \
+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Thu, 1 Mar 2018 13:28:48 +0100
-Subject: [PATCH] mac80211: minstrel: fix sampling/reporting of CCK rates
- in HT mode
-
-Long/short preamble selection cannot be sampled separately, since it
-depends on the BSS state. Because of that, sampling attempts to
-currently not used preamble modes are not counted in the statistics,
-which leads to CCK rates being sampled too often.
-
-Fix statistics accounting for long/short preamble by increasing the
-index where necessary.
-Fix excessive CCK rate sampling by dropping unsupported sample attempts.
-
-This improves throughput on 2.4 GHz channels
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/rc80211_minstrel_ht.c
-+++ b/net/mac80211/rc80211_minstrel_ht.c
-@@ -281,7 +281,8 @@ minstrel_ht_get_stats(struct minstrel_pr
- break;
-
- /* short preamble */
-- if (!(mi->supported[group] & BIT(idx)))
-+ if ((mi->supported[group] & BIT(idx + 4)) &&
-+ (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE))
- idx += 4;
- }
- return &mi->groups[group].rates[idx];
-@@ -1080,18 +1081,23 @@ minstrel_ht_get_rate(void *priv, struct
- return;
-
- sample_group = &minstrel_mcs_groups[sample_idx / MCS_GROUP_RATES];
-+ sample_idx %= MCS_GROUP_RATES;
-+
-+ if (sample_group == &minstrel_mcs_groups[MINSTREL_CCK_GROUP] &&
-+ (sample_idx >= 4) != txrc->short_preamble)
-+ return;
-+
- info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
- rate->count = 1;
-
-- if (sample_idx / MCS_GROUP_RATES == MINSTREL_CCK_GROUP) {
-+ if (sample_group == &minstrel_mcs_groups[MINSTREL_CCK_GROUP]) {
- int idx = sample_idx % ARRAY_SIZE(mp->cck_rates);
- rate->idx = mp->cck_rates[idx];
- } else if (sample_group->flags & IEEE80211_TX_RC_VHT_MCS) {
- ieee80211_rate_set_vht(rate, sample_idx % MCS_GROUP_RATES,
- sample_group->streams);
- } else {
-- rate->idx = sample_idx % MCS_GROUP_RATES +
-- (sample_group->streams - 1) * 8;
-+ rate->idx = sample_idx + (sample_group->streams - 1) * 8;
- }
-
- rate->flags = sample_group->flags;
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sat, 9 Jul 2016 15:25:24 +0200
+Subject: [PATCH] ath9k_hw: reset AHB-WMAC interface on AR91xx
+
+Should fix a few stability issues
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1394,8 +1394,12 @@ static bool ath9k_hw_set_reset(struct at
+ if (!AR_SREV_9100(ah))
+ REG_WRITE(ah, AR_RC, 0);
+
+- if (AR_SREV_9100(ah))
++ if (AR_SREV_9100(ah)) {
++ /* Reset the AHB-WMAC interface */
++ if (ah->external_reset)
++ ah->external_reset();
+ udelay(50);
++ }
+
+ return true;
+ }
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sat, 9 Jul 2016 15:26:44 +0200
+Subject: [PATCH] ath9k_hw: issue external reset for QCA955x
+
+The RTC interface on the SoC needs to be reset along with the rest of
+the WMAC.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1271,39 +1271,56 @@ void ath9k_hw_get_delta_slope_vals(struc
+ *coef_exponent = coef_exp - 16;
+ }
+
+-/* AR9330 WAR:
+- * call external reset function to reset WMAC if:
+- * - doing a cold reset
+- * - we have pending frames in the TX queues.
+- */
+-static bool ath9k_hw_ar9330_reset_war(struct ath_hw *ah, int type)
++static bool ath9k_hw_need_external_reset(struct ath_hw *ah, int type)
+ {
+- int i, npend = 0;
++ int i;
+
+- for (i = 0; i < AR_NUM_QCU; i++) {
+- npend = ath9k_hw_numtxpending(ah, i);
+- if (npend)
+- break;
++ if (type == ATH9K_RESET_COLD)
++ return true;
++
++ if (AR_SREV_9550(ah))
++ return true;
++
++ /* AR9330 WAR:
++ * call external reset function to reset WMAC if:
++ * - doing a cold reset
++ * - we have pending frames in the TX queues.
++ */
++ if (AR_SREV_9330(ah)) {
++ for (i = 0; i < AR_NUM_QCU; i++) {
++ if (ath9k_hw_numtxpending(ah, i))
++ return true;
++ }
+ }
+
+- if (ah->external_reset &&
+- (npend || type == ATH9K_RESET_COLD)) {
+- int reset_err = 0;
++ return false;
++}
+
+- ath_dbg(ath9k_hw_common(ah), RESET,
+- "reset MAC via external reset\n");
++static bool ath9k_hw_external_reset(struct ath_hw *ah, int type)
++{
++ int err;
+
+- reset_err = ah->external_reset();
+- if (reset_err) {
+- ath_err(ath9k_hw_common(ah),
+- "External reset failed, err=%d\n",
+- reset_err);
+- return false;
+- }
++ if (!ah->external_reset || !ath9k_hw_need_external_reset(ah, type))
++ return true;
+
+- REG_WRITE(ah, AR_RTC_RESET, 1);
++ ath_dbg(ath9k_hw_common(ah), RESET,
++ "reset MAC via external reset\n");
++
++ err = ah->external_reset();
++ if (err) {
++ ath_err(ath9k_hw_common(ah),
++ "External reset failed, err=%d\n", err);
++ return false;
++ }
++
++ if (AR_SREV_9550(ah)) {
++ REG_WRITE(ah, AR_RTC_RESET, 0);
++ udelay(10);
+ }
+
++ REG_WRITE(ah, AR_RTC_RESET, 1);
++ udelay(10);
++
+ return true;
+ }
+
+@@ -1356,24 +1373,24 @@ static bool ath9k_hw_set_reset(struct at
+ rst_flags |= AR_RTC_RC_MAC_COLD;
+ }
+
+- if (AR_SREV_9330(ah)) {
+- if (!ath9k_hw_ar9330_reset_war(ah, type))
+- return false;
+- }
+-
+ if (ath9k_hw_mci_is_enabled(ah))
+ ar9003_mci_check_gpm_offset(ah);
+
+ /* DMA HALT added to resolve ar9300 and ar9580 bus error during
+- * RTC_RC reg read
++ * RTC_RC reg read. Also needed for AR9550 external reset
+ */
+- if (AR_SREV_9300(ah) || AR_SREV_9580(ah)) {
++ if (AR_SREV_9300(ah) || AR_SREV_9580(ah) || AR_SREV_9550(ah)) {
+ REG_SET_BIT(ah, AR_CFG, AR_CFG_HALT_REQ);
+ ath9k_hw_wait(ah, AR_CFG, AR_CFG_HALT_ACK, AR_CFG_HALT_ACK,
+ 20 * AH_WAIT_TIMEOUT);
+- REG_CLR_BIT(ah, AR_CFG, AR_CFG_HALT_REQ);
+ }
+
++ if (!AR_SREV_9100(ah))
++ ath9k_hw_external_reset(ah, type);
++
++ if (AR_SREV_9300(ah) || AR_SREV_9580(ah))
++ REG_CLR_BIT(ah, AR_CFG, AR_CFG_HALT_REQ);
++
+ REG_WRITE(ah, AR_RTC_RC, rst_flags);
+
+ REGWRITE_BUFFER_FLUSH(ah);
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Mon, 11 Jul 2016 12:07:40 +0200
+Subject: [PATCH] ath9k_hw: set spectral scan enable bit on trigger for
+ AR9003+
+
+AR9002 code and QCA AR9003+ code do the same.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+@@ -1800,6 +1800,8 @@ static void ar9003_hw_spectral_scan_conf
+
+ static void ar9003_hw_spectral_scan_trigger(struct ath_hw *ah)
+ {
++ REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
++ AR_PHY_SPECTRAL_SCAN_ENABLE);
+ /* Activate spectral scan */
+ REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
+ AR_PHY_SPECTRAL_SCAN_ACTIVE);
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Tue, 27 Dec 2016 23:16:23 +0100
+Subject: [PATCH] ath9k: don't run periodic and nf calibation at the same
+ time
+
+The checks already prevents periodic cal from being started while noise
+floor calibration runs. It is missing checks for the other way around.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
++++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
+@@ -676,10 +676,10 @@ static int ar9002_hw_calibrate(struct at
+ return 0;
+
+ ah->cal_list_curr = currCal = currCal->calNext;
+- if (currCal->calState == CAL_WAITING) {
++ if (currCal->calState == CAL_WAITING)
+ ath9k_hw_reset_calibration(ah, currCal);
+- return 0;
+- }
++
++ return 0;
+ }
+
+ /* Do NF cal only at longer intervals */
--- /dev/null
+From: Felix Fietkau <nbd@openwrt.org>
+Date: Sun, 7 Jun 2015 13:53:35 +0200
+Subject: [PATCH] ath9k: force rx_clear when disabling rx
+
+This makes stopping Rx more reliable and should reduce the frequency of
+Rx related DMA stop warnings. Don't use rx_clear in TX99 mode.
+
+Cc: stable@vger.kernel.org
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/mac.c
++++ b/drivers/net/wireless/ath/ath9k/mac.c
+@@ -678,13 +678,18 @@ void ath9k_hw_startpcureceive(struct ath
+
+ ath9k_ani_reset(ah, is_scanning);
+
+- REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
++ REG_CLR_BIT(ah, AR_DIAG_SW,
++ AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT | AR_DIAG_FORCE_RX_CLEAR);
+ }
+ EXPORT_SYMBOL(ath9k_hw_startpcureceive);
+
+ void ath9k_hw_abortpcurecv(struct ath_hw *ah)
+ {
+- REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_ABORT | AR_DIAG_RX_DIS);
++ u32 reg = AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT;
++
++ if (!IS_ENABLED(CPTCFG_ATH9K_TX99))
++ reg |= AR_DIAG_FORCE_RX_CLEAR;
++ REG_SET_BIT(ah, AR_DIAG_SW, reg);
+
+ ath9k_hw_disable_mib_counters(ah);
+ }
--- /dev/null
+From: Felix Fietkau <nbd@openwrt.org>
+Date: Thu, 2 Jul 2015 15:20:56 +0200
+Subject: [PATCH] ath9k: limit retries for powersave response frames
+
+In some cases, the channel might be busy enough that an ath9k AP's
+response to PS-Poll frames might be too slow and the station has already
+gone to sleep. To avoid wasting too much airtime on this, limit the
+number of retries on such frames and ensure that no sample rate gets
+used.
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -188,10 +188,25 @@ static void ath_send_bar(struct ath_atx_
+ }
+
+ static void ath_set_rates(struct ieee80211_vif *vif, struct ieee80211_sta *sta,
+- struct ath_buf *bf)
++ struct ath_buf *bf, bool ps)
+ {
++ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(bf->bf_mpdu);
++
++ if (ps) {
++ /* Clear the first rate to avoid using a sample rate for PS frames */
++ info->control.rates[0].idx = -1;
++ info->control.rates[0].count = 0;
++ }
++
+ ieee80211_get_tx_rates(vif, sta, bf->bf_mpdu, bf->rates,
+ ARRAY_SIZE(bf->rates));
++ if (!ps)
++ return;
++
++ if (bf->rates[0].count > 2)
++ bf->rates[0].count = 2;
++
++ bf->rates[1].idx = -1;
+ }
+
+ static void ath_txq_skb_done(struct ath_softc *sc, struct ath_txq *txq,
+@@ -1502,7 +1517,7 @@ ath_tx_form_burst(struct ath_softc *sc,
+ break;
+ }
+
+- ath_set_rates(tid->an->vif, tid->an->sta, bf);
++ ath_set_rates(tid->an->vif, tid->an->sta, bf, false);
+ } while (1);
+ }
+
+@@ -1532,7 +1547,7 @@ static bool ath_tx_sched_aggr(struct ath
+ return false;
+ }
+
+- ath_set_rates(tid->an->vif, tid->an->sta, bf);
++ ath_set_rates(tid->an->vif, tid->an->sta, bf, false);
+ if (aggr)
+ aggr_len = ath_tx_form_aggr(sc, txq, tid, &bf_q, bf);
+ else
+@@ -1690,7 +1705,7 @@ void ath9k_release_buffered_frames(struc
+ break;
+
+ list_add_tail(&bf->list, &bf_q);
+- ath_set_rates(tid->an->vif, tid->an->sta, bf);
++ ath_set_rates(tid->an->vif, tid->an->sta, bf, true);
+ if (bf_isampdu(bf)) {
+ ath_tx_addto_baw(sc, tid, bf);
+ bf->bf_state.bf_type &= ~BUF_AGGR;
+@@ -2390,7 +2405,7 @@ int ath_tx_start(struct ieee80211_hw *hw
+ if (txctl->paprd)
+ bf->bf_state.bfs_paprd_timestamp = jiffies;
+
+- ath_set_rates(vif, sta, bf);
++ ath_set_rates(vif, sta, bf, ps_resp);
+ ath_tx_send_normal(sc, txq, tid, skb);
+
+ out:
+@@ -2429,7 +2444,7 @@ void ath_tx_cabq(struct ieee80211_hw *hw
+ break;
+
+ bf->bf_lastbf = bf;
+- ath_set_rates(vif, NULL, bf);
++ ath_set_rates(vif, NULL, bf, false);
+ ath_buf_set_rate(sc, bf, &info, fi->framelen, false);
+ duration += info.rates[0].PktDuration;
+ if (bf_tail)
+@@ -2946,7 +2961,7 @@ int ath9k_tx99_send(struct ath_softc *sc
+ return -EINVAL;
+ }
+
+- ath_set_rates(sc->tx99_vif, NULL, bf);
++ ath_set_rates(sc->tx99_vif, NULL, bf, false);
+
+ ath9k_hw_set_desc_link(sc->sc_ah, bf->bf_desc, bf->bf_daddr);
+ ath9k_hw_tx99_start(sc->sc_ah, txctl->txq->axq_qnum);
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sat, 14 May 2016 14:51:02 +0200
+Subject: [PATCH] Revert "ath9k: interpret requested txpower in EIRP
+ domain"
+
+This reverts commit 71f5137bf010c6faffab50c0ec15374c59c4a411.
+---
+
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -2935,7 +2935,8 @@ void ath9k_hw_apply_txpower(struct ath_h
+ {
+ struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
+ struct ieee80211_channel *channel;
+- int chan_pwr, new_pwr;
++ int chan_pwr, new_pwr, max_gain;
++ int ant_gain, ant_reduction = 0;
+
+ if (!chan)
+ return;
+@@ -2943,10 +2944,15 @@ void ath9k_hw_apply_txpower(struct ath_h
+ channel = chan->chan;
+ chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
+ new_pwr = min_t(int, chan_pwr, reg->power_limit);
++ max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
++
++ ant_gain = get_antenna_gain(ah, chan);
++ if (ant_gain > max_gain)
++ ant_reduction = ant_gain - max_gain;
+
+ ah->eep_ops->set_txpower(ah, chan,
+ ath9k_regd_get_ctl(reg, chan),
+- get_antenna_gain(ah, chan), new_pwr, test);
++ ant_reduction, new_pwr, test);
+ }
+
+ void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
--- /dev/null
+From: Janusz Dziedzic <janusz.dziedzic@tieto.com>
+Date: Fri, 19 Feb 2016 11:01:49 +0100
+Subject: [PATCH] mac80211: add hdrlen to ieee80211_tx_data
+
+Add hdrlen to ieee80211_tx_data and use this
+when wep/ccmd/tkip. This is preparation for
+aligned4 code.
+
+Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
+---
+
+--- a/net/mac80211/ieee80211_i.h
++++ b/net/mac80211/ieee80211_i.h
+@@ -177,6 +177,7 @@ struct ieee80211_tx_data {
+ struct ieee80211_tx_rate rate;
+
+ unsigned int flags;
++ unsigned int hdrlen;
+ };
+
+
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -921,7 +921,7 @@ ieee80211_tx_h_fragment(struct ieee80211
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hdr *hdr = (void *)skb->data;
+ int frag_threshold = tx->local->hw.wiphy->frag_threshold;
+- int hdrlen;
++ int hdrlen = tx->hdrlen;
+ int fragnum;
+
+ /* no matter what happens, tx->skb moves to tx->skbs */
+@@ -942,8 +942,6 @@ ieee80211_tx_h_fragment(struct ieee80211
+ if (WARN_ON(info->flags & IEEE80211_TX_CTL_AMPDU))
+ return TX_DROP;
+
+- hdrlen = ieee80211_hdrlen(hdr->frame_control);
+-
+ /* internal error, why isn't DONTFRAG set? */
+ if (WARN_ON(skb->len + FCS_LEN <= frag_threshold))
+ return TX_DROP;
+@@ -1175,6 +1173,8 @@ ieee80211_tx_prepare(struct ieee80211_su
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+
++ tx->hdrlen = ieee80211_hdrlen(hdr->frame_control);
++
+ if (likely(sta)) {
+ if (!IS_ERR(sta))
+ tx->sta = sta;
+@@ -3468,6 +3468,7 @@ begin:
+ tx.local = local;
+ tx.skb = skb;
+ tx.sdata = vif_to_sdata(info->control.vif);
++ tx.hdrlen = ieee80211_padded_hdrlen(hw, hdr->frame_control);
+
+ if (txq->sta)
+ tx.sta = container_of(txq->sta, struct sta_info, sta);
+@@ -3796,6 +3797,7 @@ ieee80211_build_data_template(struct iee
+ hdr = (void *)skb->data;
+ tx.sta = sta_info_get(sdata, hdr->addr1);
+ tx.skb = skb;
++ tx.hdrlen = ieee80211_padded_hdrlen(&tx.local->hw, hdr->frame_control);
+
+ if (ieee80211_tx_h_select_key(&tx) != TX_CONTINUE) {
+ rcu_read_unlock();
+--- a/net/mac80211/util.c
++++ b/net/mac80211/util.c
+@@ -1232,6 +1232,7 @@ void ieee80211_send_auth(struct ieee8021
+ struct ieee80211_local *local = sdata->local;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
++ unsigned int hdrlen;
+ int err;
+
+ /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
+@@ -1255,8 +1256,10 @@ void ieee80211_send_auth(struct ieee8021
+ skb_put_data(skb, extra, extra_len);
+
+ if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
++ hdrlen = ieee80211_hdrlen(mgmt->frame_control);
+ mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+- err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
++ err = ieee80211_wep_encrypt(local, skb, hdrlen, key,
++ key_len, key_idx);
+ WARN_ON(err);
+ }
+
+--- a/net/mac80211/wep.c
++++ b/net/mac80211/wep.c
+@@ -89,11 +89,11 @@ static void ieee80211_wep_get_iv(struct
+
+ static u8 *ieee80211_wep_add_iv(struct ieee80211_local *local,
+ struct sk_buff *skb,
++ unsigned int hdrlen,
+ int keylen, int keyidx)
+ {
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+- unsigned int hdrlen;
+ u8 *newhdr;
+
+ hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+@@ -101,7 +101,6 @@ static u8 *ieee80211_wep_add_iv(struct i
+ if (WARN_ON(skb_headroom(skb) < IEEE80211_WEP_IV_LEN))
+ return NULL;
+
+- hdrlen = ieee80211_hdrlen(hdr->frame_control);
+ newhdr = skb_push(skb, IEEE80211_WEP_IV_LEN);
+ memmove(newhdr, newhdr + IEEE80211_WEP_IV_LEN, hdrlen);
+
+@@ -160,6 +159,7 @@ int ieee80211_wep_encrypt_data(struct cr
+ */
+ int ieee80211_wep_encrypt(struct ieee80211_local *local,
+ struct sk_buff *skb,
++ unsigned int hdrlen,
+ const u8 *key, int keylen, int keyidx)
+ {
+ u8 *iv;
+@@ -169,7 +169,7 @@ int ieee80211_wep_encrypt(struct ieee802
+ if (WARN_ON(skb_tailroom(skb) < IEEE80211_WEP_ICV_LEN))
+ return -1;
+
+- iv = ieee80211_wep_add_iv(local, skb, keylen, keyidx);
++ iv = ieee80211_wep_add_iv(local, skb, hdrlen, keylen, keyidx);
+ if (!iv)
+ return -1;
+
+@@ -307,13 +307,14 @@ static int wep_encrypt_skb(struct ieee80
+ struct ieee80211_key_conf *hw_key = info->control.hw_key;
+
+ if (!hw_key) {
+- if (ieee80211_wep_encrypt(tx->local, skb, tx->key->conf.key,
++ if (ieee80211_wep_encrypt(tx->local, skb, tx->hdrlen,
++ tx->key->conf.key,
+ tx->key->conf.keylen,
+ tx->key->conf.keyidx))
+ return -1;
+ } else if ((hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV) ||
+ (hw_key->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE)) {
+- if (!ieee80211_wep_add_iv(tx->local, skb,
++ if (!ieee80211_wep_add_iv(tx->local, skb, tx->hdrlen,
+ tx->key->conf.keylen,
+ tx->key->conf.keyidx))
+ return -1;
+--- a/net/mac80211/wep.h
++++ b/net/mac80211/wep.h
+@@ -22,6 +22,7 @@ int ieee80211_wep_encrypt_data(struct cr
+ size_t klen, u8 *data, size_t data_len);
+ int ieee80211_wep_encrypt(struct ieee80211_local *local,
+ struct sk_buff *skb,
++ unsigned int hdrlen,
+ const u8 *key, int keylen, int keyidx);
+ int ieee80211_wep_decrypt_data(struct crypto_cipher *tfm, u8 *rc4key,
+ size_t klen, u8 *data, size_t data_len);
+--- a/net/mac80211/wpa.c
++++ b/net/mac80211/wpa.c
+@@ -44,7 +44,7 @@ ieee80211_tx_h_michael_mic_add(struct ie
+ skb->len < 24 || !ieee80211_is_data_present(hdr->frame_control))
+ return TX_CONTINUE;
+
+- hdrlen = ieee80211_hdrlen(hdr->frame_control);
++ hdrlen = tx->hdrlen;
+ if (skb->len < hdrlen)
+ return TX_DROP;
+
+@@ -187,7 +187,6 @@ mic_fail_no_key:
+
+ static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
+ {
+- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_key *key = tx->key;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ unsigned int hdrlen;
+@@ -202,7 +201,7 @@ static int tkip_encrypt_skb(struct ieee8
+ return 0;
+ }
+
+- hdrlen = ieee80211_hdrlen(hdr->frame_control);
++ hdrlen = tx->hdrlen;
+ len = skb->len - hdrlen;
+
+ if (info->control.hw_key)
+@@ -420,7 +419,7 @@ static int ccmp_encrypt_skb(struct ieee8
+ return 0;
+ }
+
+- hdrlen = ieee80211_hdrlen(hdr->frame_control);
++ hdrlen = tx->hdrlen;
+ len = skb->len - hdrlen;
+
+ if (info->control.hw_key)
+@@ -653,7 +652,7 @@ static int gcmp_encrypt_skb(struct ieee8
+ return 0;
+ }
+
+- hdrlen = ieee80211_hdrlen(hdr->frame_control);
++ hdrlen = tx->hdrlen;
+ len = skb->len - hdrlen;
+
+ if (info->control.hw_key)
+@@ -793,7 +792,6 @@ static ieee80211_tx_result
+ ieee80211_crypto_cs_encrypt(struct ieee80211_tx_data *tx,
+ struct sk_buff *skb)
+ {
+- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct ieee80211_key *key = tx->key;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ int hdrlen;
+@@ -809,8 +807,7 @@ ieee80211_crypto_cs_encrypt(struct ieee8
+ pskb_expand_head(skb, iv_len, 0, GFP_ATOMIC)))
+ return TX_DROP;
+
+- hdrlen = ieee80211_hdrlen(hdr->frame_control);
+-
++ hdrlen = tx->hdrlen;
+ pos = skb_push(skb, iv_len);
+ memmove(pos, pos + iv_len, hdrlen);
+
--- /dev/null
+From: Janusz Dziedzic <janusz.dziedzic@tieto.com>
+Date: Fri, 19 Feb 2016 11:01:50 +0100
+Subject: [PATCH] mac80211: add NEED_ALIGNED4_SKBS hw flag
+
+HW/driver should set NEED_ALIGNED4_SKBS flag in case
+require aligned skbs to four-byte boundaries.
+This affect only TX direction.
+
+Padding is added after ieee80211_hdr, before IV/LLC.
+
+Before we have to do memmove(hdrlen) twice in the
+dirver. Once before we pass this to HW and next
+in tx completion (to be sure monitor will report
+this tx frame correctly).
+
+With this patch we can skip this memmove() and save CPU.
+
+Currently this was tested with ath9k, both hw/sw crypt for
+wep/tkip/ccmp.
+
+Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
+---
+
+--- a/include/net/mac80211.h
++++ b/include/net/mac80211.h
+@@ -2059,6 +2059,9 @@ struct ieee80211_txq {
+ * @IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA: Hardware supports buffer STA on
+ * TDLS links.
+ *
++ * @IEEE80211_HW_NEEDS_ALIGNED4_SKBS: Driver need aligned skbs to four-byte.
++ * Padding will be added after ieee80211_hdr, before IV/LLC.
++ *
+ * @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays
+ */
+ enum ieee80211_hw_flags {
+@@ -2102,6 +2105,7 @@ enum ieee80211_hw_flags {
+ IEEE80211_HW_REPORTS_LOW_ACK,
+ IEEE80211_HW_SUPPORTS_TX_FRAG,
+ IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA,
++ IEEE80211_HW_NEEDS_ALIGNED4_SKBS,
+
+ /* keep last, obviously */
+ NUM_IEEE80211_HW_FLAGS
+--- a/net/mac80211/debugfs.c
++++ b/net/mac80211/debugfs.c
+@@ -212,6 +212,7 @@ static const char *hw_flag_names[] = {
+ FLAG(REPORTS_LOW_ACK),
+ FLAG(SUPPORTS_TX_FRAG),
+ FLAG(SUPPORTS_TDLS_BUFFER_STA),
++ FLAG(NEEDS_ALIGNED4_SKBS),
+ #undef FLAG
+ };
+
+--- a/net/mac80211/ieee80211_i.h
++++ b/net/mac80211/ieee80211_i.h
+@@ -1548,6 +1548,29 @@ ieee80211_vif_get_num_mcast_if(struct ie
+ return -1;
+ }
+
++static inline unsigned int
++ieee80211_hdr_padsize(struct ieee80211_hw *hw, unsigned int hdrlen)
++{
++ /*
++ * While hdrlen is already aligned to two-byte boundaries,
++ * simple check with & 2 will return correct padsize.
++ */
++ if (ieee80211_hw_check(hw, NEEDS_ALIGNED4_SKBS))
++ return hdrlen & 2;
++ return 0;
++}
++
++static inline unsigned int
++ieee80211_padded_hdrlen(struct ieee80211_hw *hw, __le16 fc)
++{
++ unsigned int hdrlen;
++
++ hdrlen = ieee80211_hdrlen(fc);
++ hdrlen += ieee80211_hdr_padsize(hw, hdrlen);
++
++ return hdrlen;
++}
++
+ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
+ struct ieee80211_rx_status *status,
+ unsigned int mpdu_len,
+--- a/net/mac80211/sta_info.h
++++ b/net/mac80211/sta_info.h
+@@ -300,7 +300,7 @@ struct ieee80211_fast_tx {
+ u8 hdr_len;
+ u8 sa_offs, da_offs, pn_offs;
+ u8 band;
+- u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV +
++ u8 hdr[30 + 2 + 2 + IEEE80211_FAST_XMIT_MAX_IV +
+ sizeof(rfc1042_header)] __aligned(2);
+
+ struct rcu_head rcu_head;
+--- a/net/mac80211/status.c
++++ b/net/mac80211/status.c
+@@ -642,9 +642,22 @@ void ieee80211_tx_monitor(struct ieee802
+ struct sk_buff *skb2;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_sub_if_data *sdata;
++ struct ieee80211_hdr *hdr = (void *)skb->data;
+ struct net_device *prev_dev = NULL;
++ unsigned int hdrlen, padsize;
+ int rtap_len;
+
++ /* Remove padding if was added */
++ if (ieee80211_hw_check(&local->hw, NEEDS_ALIGNED4_SKBS)) {
++ hdrlen = ieee80211_hdrlen(hdr->frame_control);
++ padsize = ieee80211_hdr_padsize(&local->hw, hdrlen);
++
++ if (padsize && skb->len > hdrlen + padsize) {
++ memmove(skb->data + padsize, skb->data, hdrlen);
++ skb_pull(skb, padsize);
++ }
++ }
++
+ /* send frame to monitor interfaces now */
+ rtap_len = ieee80211_tx_radiotap_len(info);
+ if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) {
+--- a/net/mac80211/tkip.c
++++ b/net/mac80211/tkip.c
+@@ -201,10 +201,12 @@ void ieee80211_get_tkip_p2k(struct ieee8
+ {
+ struct ieee80211_key *key = (struct ieee80211_key *)
+ container_of(keyconf, struct ieee80211_key, conf);
++ struct ieee80211_hw *hw = &key->local->hw;
+ const u8 *tk = &key->conf.key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY];
+ struct tkip_ctx *ctx = &key->u.tkip.tx;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+- const u8 *data = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
++ const u8 *data = (u8 *)hdr + ieee80211_padded_hdrlen(hw,
++ hdr->frame_control);
+ u32 iv32 = get_unaligned_le32(&data[4]);
+ u16 iv16 = data[2] | (data[0] << 8);
+
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -1172,8 +1172,7 @@ ieee80211_tx_prepare(struct ieee80211_su
+ info->flags &= ~IEEE80211_TX_INTFL_NEED_TXPROCESSING;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+-
+- tx->hdrlen = ieee80211_hdrlen(hdr->frame_control);
++ tx->hdrlen = ieee80211_padded_hdrlen(&local->hw, hdr->frame_control);
+
+ if (likely(sta)) {
+ if (!IS_ERR(sta))
+@@ -2184,7 +2183,7 @@ netdev_tx_t ieee80211_monitor_start_xmit
+ goto fail;
+
+ hdr = (struct ieee80211_hdr *)(skb->data + len_rthdr);
+- hdrlen = ieee80211_hdrlen(hdr->frame_control);
++ hdrlen = ieee80211_padded_hdrlen(&local->hw, hdr->frame_control);
+
+ if (skb->len < len_rthdr + hdrlen)
+ goto fail;
+@@ -2402,7 +2401,7 @@ static struct sk_buff *ieee80211_build_h
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ struct ieee80211_sub_if_data *ap_sdata;
+ enum nl80211_band band;
+- int ret;
++ int padsize, ret;
+
+ if (IS_ERR(sta))
+ sta = NULL;
+@@ -2622,6 +2621,9 @@ static struct sk_buff *ieee80211_build_h
+ hdrlen += 2;
+ }
+
++ /* Check aligned4 skb required */
++ padsize = ieee80211_hdr_padsize(&sdata->local->hw, hdrlen);
++
+ /*
+ * Drop unicast frames to unauthorised stations unless they are
+ * EAPOL frames from the local station.
+@@ -2702,6 +2704,7 @@ static struct sk_buff *ieee80211_build_h
+
+ skb_pull(skb, skip_header_bytes);
+ head_need = hdrlen + encaps_len + meshhdrlen - skb_headroom(skb);
++ head_need += padsize;
+
+ /*
+ * So we need to modify the skb header and hence need a copy of
+@@ -2734,6 +2737,9 @@ static struct sk_buff *ieee80211_build_h
+ memcpy(skb_push(skb, meshhdrlen), &mesh_hdr, meshhdrlen);
+ #endif
+
++ if (padsize)
++ memset(skb_push(skb, padsize), 0, padsize);
++
+ if (ieee80211_is_data_qos(fc)) {
+ __le16 *qos_control;
+
+@@ -2909,6 +2915,9 @@ void ieee80211_check_fast_xmit(struct st
+ fc |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
+ }
+
++ /* Check aligned4 skb required */
++ build.hdr_len += ieee80211_hdr_padsize(&local->hw, build.hdr_len);
++
+ /* We store the key here so there's no point in using rcu_dereference()
+ * but that's fine because the code that changes the pointers will call
+ * this function after doing so. For a single CPU that would be enough,
+@@ -3495,7 +3504,7 @@ begin:
+
+ if (tx.key &&
+ (tx.key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
+- pn_offs = ieee80211_hdrlen(hdr->frame_control);
++ pn_offs = tx.hdrlen;
+
+ ieee80211_xmit_fast_finish(sta->sdata, sta, pn_offs,
+ tx.key, skb);
+--- a/net/mac80211/util.c
++++ b/net/mac80211/util.c
+@@ -1230,6 +1230,7 @@ void ieee80211_send_auth(struct ieee8021
+ u32 tx_flags)
+ {
+ struct ieee80211_local *local = sdata->local;
++ struct ieee80211_hw *hw = &local->hw;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ unsigned int hdrlen;
+@@ -1256,7 +1257,7 @@ void ieee80211_send_auth(struct ieee8021
+ skb_put_data(skb, extra, extra_len);
+
+ if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
+- hdrlen = ieee80211_hdrlen(mgmt->frame_control);
++ hdrlen = ieee80211_padded_hdrlen(hw, mgmt->frame_control);
+ mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+ err = ieee80211_wep_encrypt(local, skb, hdrlen, key,
+ key_len, key_idx);
--- /dev/null
+From: Chaitanya T K <chaitanya.mgit@gmail.com>
+Date: Mon, 27 Jun 2016 15:23:26 +0530
+Subject: [PATCH] mac80211: minstrel: Enable STBC and LDPC for VHT Rates
+
+If peer support reception of STBC and LDPC, enable them for better
+performance.
+
+Signed-off-by: Chaitanya TK <chaitanya.mgit@gmail.com>
+---
+
+--- a/include/linux/ieee80211.h
++++ b/include/linux/ieee80211.h
+@@ -1556,6 +1556,7 @@ struct ieee80211_vht_operation {
+ #define IEEE80211_VHT_CAP_RXSTBC_3 0x00000300
+ #define IEEE80211_VHT_CAP_RXSTBC_4 0x00000400
+ #define IEEE80211_VHT_CAP_RXSTBC_MASK 0x00000700
++#define IEEE80211_VHT_CAP_RXSTBC_SHIFT 8
+ #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE 0x00000800
+ #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE 0x00001000
+ #define IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT 13
+--- a/net/mac80211/rc80211_minstrel_ht.c
++++ b/net/mac80211/rc80211_minstrel_ht.c
+@@ -1130,7 +1130,7 @@ minstrel_ht_update_caps(void *priv, stru
+ struct minstrel_ht_sta_priv *msp = priv_sta;
+ struct minstrel_ht_sta *mi = &msp->ht;
+ struct ieee80211_mcs_info *mcs = &sta->ht_cap.mcs;
+- u16 sta_cap = sta->ht_cap.cap;
++ u16 ht_cap = sta->ht_cap.cap;
+ struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
+ struct sta_info *sinfo = container_of(sta, struct sta_info, sta);
+ int use_vht;
+@@ -1138,6 +1138,7 @@ minstrel_ht_update_caps(void *priv, stru
+ int ack_dur;
+ int stbc;
+ int i;
++ bool ldpc = false;
+
+ /* fall back to the old minstrel for legacy stations */
+ if (!sta->ht_cap.ht_supported)
+@@ -1175,16 +1176,24 @@ minstrel_ht_update_caps(void *priv, stru
+ }
+ mi->sample_tries = 4;
+
+- /* TODO tx_flags for vht - ATM the RC API is not fine-grained enough */
+ if (!use_vht) {
+- stbc = (sta_cap & IEEE80211_HT_CAP_RX_STBC) >>
++ stbc = (ht_cap & IEEE80211_HT_CAP_RX_STBC) >>
+ IEEE80211_HT_CAP_RX_STBC_SHIFT;
+- mi->tx_flags |= stbc << IEEE80211_TX_CTL_STBC_SHIFT;
+
+- if (sta_cap & IEEE80211_HT_CAP_LDPC_CODING)
+- mi->tx_flags |= IEEE80211_TX_CTL_LDPC;
++ if (ht_cap & IEEE80211_HT_CAP_LDPC_CODING)
++ ldpc = true;
++ } else {
++ stbc = (vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK) >>
++ IEEE80211_VHT_CAP_RXSTBC_SHIFT;
++
++ if (vht_cap->cap & IEEE80211_VHT_CAP_RXLDPC)
++ ldpc = true;
+ }
+
++ mi->tx_flags |= stbc << IEEE80211_TX_CTL_STBC_SHIFT;
++ if (ldpc)
++ mi->tx_flags |= IEEE80211_TX_CTL_LDPC;
++
+ for (i = 0; i < ARRAY_SIZE(mi->groups); i++) {
+ u32 gflags = minstrel_mcs_groups[i].flags;
+ int bw, nss;
+@@ -1197,10 +1206,10 @@ minstrel_ht_update_caps(void *priv, stru
+
+ if (gflags & IEEE80211_TX_RC_SHORT_GI) {
+ if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH) {
+- if (!(sta_cap & IEEE80211_HT_CAP_SGI_40))
++ if (!(ht_cap & IEEE80211_HT_CAP_SGI_40))
+ continue;
+ } else {
+- if (!(sta_cap & IEEE80211_HT_CAP_SGI_20))
++ if (!(ht_cap & IEEE80211_HT_CAP_SGI_20))
+ continue;
+ }
+ }
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sun, 28 Aug 2016 13:13:01 +0200
+Subject: [PATCH] ath9k: fix moredata bit in PS buffered frame release
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -1674,6 +1674,22 @@ void ath_tx_aggr_wakeup(struct ath_softc
+ }
+ }
+
++
++static void
++ath9k_set_moredata(struct ath_softc *sc, struct ath_buf *bf, bool val)
++{
++ struct ieee80211_hdr *hdr;
++ u16 mask = cpu_to_le16(IEEE80211_FCTL_MOREDATA);
++ u16 mask_val = mask * val;
++
++ hdr = (struct ieee80211_hdr *) bf->bf_mpdu->data;
++ if ((hdr->frame_control & mask) != mask_val) {
++ hdr->frame_control = (hdr->frame_control & ~mask) | mask_val;
++ dma_sync_single_for_device(sc->dev, bf->bf_buf_addr,
++ sizeof(*hdr), DMA_TO_DEVICE);
++ }
++}
++
+ void ath9k_release_buffered_frames(struct ieee80211_hw *hw,
+ struct ieee80211_sta *sta,
+ u16 tids, int nframes,
+@@ -1704,6 +1720,7 @@ void ath9k_release_buffered_frames(struc
+ if (!bf)
+ break;
+
++ ath9k_set_moredata(sc, bf, true);
+ list_add_tail(&bf->list, &bf_q);
+ ath_set_rates(tid->an->vif, tid->an->sta, bf, true);
+ if (bf_isampdu(bf)) {
+@@ -1727,6 +1744,9 @@ void ath9k_release_buffered_frames(struc
+ if (list_empty(&bf_q))
+ return;
+
++ if (!more_data)
++ ath9k_set_moredata(sc, bf_tail, false);
++
+ info = IEEE80211_SKB_CB(bf_tail->bf_mpdu);
+ info->flags |= IEEE80211_TX_STATUS_EOSP;
+
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sun, 28 Aug 2016 13:13:42 +0200
+Subject: [PATCH] ath9k: clear potentially stale EOSP status bit in
+ intermediate queues
+
+Prevents spurious ieee80211_sta_eosp calls.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -984,7 +984,8 @@ ath_tx_get_tid_subframe(struct ath_softc
+ bf->bf_lastbf = bf;
+
+ tx_info = IEEE80211_SKB_CB(skb);
+- tx_info->flags &= ~IEEE80211_TX_CTL_CLEAR_PS_FILT;
++ tx_info->flags &= ~(IEEE80211_TX_CTL_CLEAR_PS_FILT |
++ IEEE80211_TX_STATUS_EOSP);
+
+ /*
+ * No aggregation session is running, but there may be frames
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sun, 28 Aug 2016 13:23:27 +0200
+Subject: [PATCH] ath9k: report tx status on EOSP
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -86,7 +86,8 @@ static void ath_tx_status(struct ieee802
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_sta *sta = info->status.status_driver_data[0];
+
+- if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) {
++ if (info->flags & (IEEE80211_TX_CTL_REQ_TX_STATUS |
++ IEEE80211_TX_STATUS_EOSP)) {
+ ieee80211_tx_status(hw, skb);
+ return;
+ }
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Tue, 30 Aug 2016 12:44:08 +0200
+Subject: [PATCH] ath9k: fix block-ack window tracking issues
+
+Ensure that a buffer gets tracked as part of the block-ack window as
+soon as it's dequeued from the tid for the first time. Ensure that
+double calls to ath_tx_addto_baw (e.g. on retransmission) don't cause
+any issues.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -62,7 +62,7 @@ static void ath_tx_rc_status(struct ath_
+ struct ath_tx_status *ts, int nframes, int nbad,
+ int txok);
+ static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
+- int seqno);
++ struct ath_buf *bf);
+ static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc,
+ struct ath_txq *txq,
+ struct ath_atx_tid *tid,
+@@ -311,7 +311,7 @@ static void ath_tx_flush_tid(struct ath_
+ }
+
+ if (fi->baw_tracked) {
+- ath_tx_update_baw(sc, tid, bf->bf_state.seqno);
++ ath_tx_update_baw(sc, tid, bf);
+ sendbar = true;
+ }
+
+@@ -327,10 +327,15 @@ static void ath_tx_flush_tid(struct ath_
+ }
+
+ static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
+- int seqno)
++ struct ath_buf *bf)
+ {
++ struct ath_frame_info *fi = get_frame_info(bf->bf_mpdu);
++ u16 seqno = bf->bf_state.seqno;
+ int index, cindex;
+
++ if (!fi->baw_tracked)
++ return;
++
+ index = ATH_BA_INDEX(tid->seq_start, seqno);
+ cindex = (tid->baw_head + index) & (ATH_TID_MAX_BUFS - 1);
+
+@@ -351,6 +356,9 @@ static void ath_tx_addto_baw(struct ath_
+ u16 seqno = bf->bf_state.seqno;
+ int index, cindex;
+
++ if (fi->baw_tracked)
++ return;
++
+ index = ATH_BA_INDEX(tid->seq_start, seqno);
+ cindex = (tid->baw_head + index) & (ATH_TID_MAX_BUFS - 1);
+ __set_bit(cindex, tid->tx_buf);
+@@ -627,7 +635,7 @@ static void ath_tx_complete_aggr(struct
+ * complete the acked-ones/xretried ones; update
+ * block-ack window
+ */
+- ath_tx_update_baw(sc, tid, seqno);
++ ath_tx_update_baw(sc, tid, bf);
+
+ if (rc_update && (acked_cnt == 1 || txfail_cnt == 1)) {
+ memcpy(tx_info->control.rates, rates, sizeof(rates));
+@@ -657,7 +665,7 @@ static void ath_tx_complete_aggr(struct
+ * run out of tx buf.
+ */
+ if (!tbf) {
+- ath_tx_update_baw(sc, tid, seqno);
++ ath_tx_update_baw(sc, tid, bf);
+
+ ath_tx_complete_buf(sc, bf, txq,
+ &bf_head, NULL, ts,
+@@ -1026,11 +1034,14 @@ ath_tx_get_tid_subframe(struct ath_softc
+
+ INIT_LIST_HEAD(&bf_head);
+ list_add(&bf->list, &bf_head);
+- ath_tx_update_baw(sc, tid, seqno);
++ ath_tx_update_baw(sc, tid, bf);
+ ath_tx_complete_buf(sc, bf, txq, &bf_head, NULL, &ts, 0);
+ continue;
+ }
+
++ if (bf_isampdu(bf))
++ ath_tx_addto_baw(sc, tid, bf);
++
+ return bf;
+ }
+
+@@ -1088,8 +1099,6 @@ ath_tx_form_aggr(struct ath_softc *sc, s
+ bf->bf_next = NULL;
+
+ /* link buffers of this frame to the aggregate */
+- if (!fi->baw_tracked)
+- ath_tx_addto_baw(sc, tid, bf);
+ bf->bf_state.ndelim = ndelim;
+
+ list_add_tail(&bf->list, bf_q);
+@@ -1725,10 +1734,8 @@ void ath9k_release_buffered_frames(struc
+ ath9k_set_moredata(sc, bf, true);
+ list_add_tail(&bf->list, &bf_q);
+ ath_set_rates(tid->an->vif, tid->an->sta, bf, true);
+- if (bf_isampdu(bf)) {
+- ath_tx_addto_baw(sc, tid, bf);
++ if (bf_isampdu(bf))
+ bf->bf_state.bf_type &= ~BUF_AGGR;
+- }
+ if (bf_tail)
+ bf_tail->bf_next = bf;
+
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Wed, 22 Mar 2017 20:37:04 +0100
+Subject: [PATCH] ath9k_hw: fix channel maximum power level test
+
+The tx power applied by set_txpower is limited by the CTL (conformance
+test limit) entries in the EEPROM. These can change based on the user
+configured regulatory domain.
+Depending on the EEPROM data this can cause the tx power to become too
+limited, if the original regdomain CTLs impose lowr limits than the CTLs
+of the user configured regdomain.
+
+To fix this issue, set the initial channel limits without any CTL
+restrictions and only apply the CTL at run time when setting the channel
+and the real tx power.
+
+Cc: stable@vger.kernel.org
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -2937,10 +2937,14 @@ void ath9k_hw_apply_txpower(struct ath_h
+ struct ieee80211_channel *channel;
+ int chan_pwr, new_pwr, max_gain;
+ int ant_gain, ant_reduction = 0;
++ u16 ctl = NO_CTL;
+
+ if (!chan)
+ return;
+
++ if (!test)
++ ctl = ath9k_regd_get_ctl(reg, chan);
++
+ channel = chan->chan;
+ chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
+ new_pwr = min_t(int, chan_pwr, reg->power_limit);
+@@ -2950,9 +2954,7 @@ void ath9k_hw_apply_txpower(struct ath_h
+ if (ant_gain > max_gain)
+ ant_reduction = ant_gain - max_gain;
+
+- ah->eep_ops->set_txpower(ah, chan,
+- ath9k_regd_get_ctl(reg, chan),
+- ant_reduction, new_pwr, test);
++ ah->eep_ops->set_txpower(ah, chan, ctl, ant_reduction, new_pwr, test);
+ }
+
+ void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Wed, 19 Jul 2017 08:49:31 +0200
+Subject: [PATCH] ath9k: adjust tx power reduction for US regulatory
+ domain
+
+FCC regulatory rules allow for up to 3 dBi antenna gain. Account for
+this in the EEPROM based tx power reduction code.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -2954,6 +2954,10 @@ void ath9k_hw_apply_txpower(struct ath_h
+ if (ant_gain > max_gain)
+ ant_reduction = ant_gain - max_gain;
+
++ /* FCC allows maximum antenna gain of 3 dBi */
++ if (reg->region == NL80211_DFS_FCC)
++ ant_reduction = max_t(int, ant_reduction - 6, 0);
++
+ ah->eep_ops->set_txpower(ah, chan, ctl, ant_reduction, new_pwr, test);
+ }
+
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sun, 23 Jul 2017 14:58:22 +0200
+Subject: [PATCH] ath9k: fix more-data flag for buffered multicast
+ packets
+
+The flag needs to be cleared for the last packet in the list, not the
+first one. Fixes some issues with multicast packet loss for powersave
+clients connected to an ath9k AP.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -2451,7 +2451,6 @@ void ath_tx_cabq(struct ieee80211_hw *hw
+ .txq = sc->beacon.cabq
+ };
+ struct ath_tx_info info = {};
+- struct ieee80211_hdr *hdr;
+ struct ath_buf *bf_tail = NULL;
+ struct ath_buf *bf;
+ LIST_HEAD(bf_q);
+@@ -2495,15 +2494,10 @@ void ath_tx_cabq(struct ieee80211_hw *hw
+ if (list_empty(&bf_q))
+ return;
+
+- bf = list_first_entry(&bf_q, struct ath_buf, list);
+- hdr = (struct ieee80211_hdr *) bf->bf_mpdu->data;
+-
+- if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) {
+- hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+- dma_sync_single_for_device(sc->dev, bf->bf_buf_addr,
+- sizeof(*hdr), DMA_TO_DEVICE);
+- }
++ bf = list_last_entry(&bf_q, struct ath_buf, list);
++ ath9k_set_moredata(sc, bf, false);
+
++ bf = list_first_entry(&bf_q, struct ath_buf, list);
+ ath_txq_lock(sc, txctl.txq);
+ ath_tx_fill_desc(sc, bf, txctl.txq, 0);
+ ath_tx_txqaddbuf(sc, txctl.txq, &bf_q, false);
--- /dev/null
+From: dave taht <dave@taht.net>
+Date: Wed, 5 Oct 2016 20:09:15 -0700
+Subject: [PATCH] Revert "ath10k: disable wake_tx_queue for older
+ devices"
+
+This reverts commit 4ca1807815aa6801aaced7fdefa9edacc2521767
+in the hope that we've fixed all the performance problems now.
+---
+
+--- a/drivers/net/wireless/ath/ath10k/mac.c
++++ b/drivers/net/wireless/ath/ath10k/mac.c
+@@ -8319,15 +8319,6 @@ int ath10k_mac_register(struct ath10k *a
+ ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
+ }
+
+- /* Current wake_tx_queue implementation imposes a significant
+- * performance penalty in some setups. The tx scheduling code needs
+- * more work anyway so disable the wake_tx_queue unless firmware
+- * supports the pull-push mechanism.
+- */
+- if (!test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL,
+- ar->running_fw->fw_file.fw_features))
+- ar->ops->wake_tx_queue = NULL;
+-
+ ret = ath10k_mac_init_rd(ar);
+ if (ret) {
+ ath10k_err(ar, "failed to derive regdom: %d\n", ret);
--- /dev/null
+From: Christian Lamparter <chunkeey@gmail.com>
+Date: Wed, 1 Nov 2017 21:01:57 +0100
+Subject: [PATCH] ath10k: fix recent bandwidth conversion bug
+
+The commit "cfg80211: make RATE_INFO_BW_20 the default" changed
+the index of RATE_INFO_BW_20, but the updates to ath10k missed
+the special bandwidth calculation case in
+ath10k_update_per_peer_tx_stats().
+
+Fixes: 842be75c77cb ("cfg80211: make RATE_INFO_BW_20 the default")
+Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
+Patchwork-Id: 10037035
+Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
+---
+
+--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
++++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
+@@ -592,6 +592,9 @@ struct amsdu_subframe_hdr {
+
+ #define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63)
+
++static const u8 ath10k_bw_to_mac80211[] = { RATE_INFO_BW_20, RATE_INFO_BW_40,
++ RATE_INFO_BW_80, RATE_INFO_BW_160 };
++
+ static void ath10k_htt_rx_h_rates(struct ath10k *ar,
+ struct ieee80211_rx_status *status,
+ struct htt_rx_desc *rxd)
+@@ -694,23 +697,7 @@ static void ath10k_htt_rx_h_rates(struct
+ if (sgi)
+ status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
+
+- switch (bw) {
+- /* 20MHZ */
+- case 0:
+- break;
+- /* 40MHZ */
+- case 1:
+- status->bw = RATE_INFO_BW_40;
+- break;
+- /* 80MHZ */
+- case 2:
+- status->bw = RATE_INFO_BW_80;
+- break;
+- case 3:
+- status->bw = RATE_INFO_BW_160;
+- break;
+- }
+-
++ status->bw = ath10k_bw_to_mac80211[bw];
+ status->encoding = RX_ENC_VHT;
+ break;
+ default:
+@@ -2297,7 +2284,7 @@ ath10k_update_per_peer_tx_stats(struct a
+ arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
+
+ arsta->txrate.nss = txrate.nss;
+- arsta->txrate.bw = txrate.bw + RATE_INFO_BW_20;
++ arsta->txrate.bw = ath10k_bw_to_mac80211[txrate.bw];
+ }
+
+ static void ath10k_htt_fetch_peer_stats(struct ath10k *ar,
--- /dev/null
+From: Johannes Berg <johannes.berg@intel.com>
+Date: Tue, 30 Jan 2018 13:17:38 +0100
+Subject: [PATCH] cfg80211: use only 1Mbps for basic rates in mesh
+
+Mesh used to use the mandatory rates as basic rates, but we got
+the calculation of mandatory rates wrong until some time ago.
+Fix this this broke interoperability with older versions since
+now more basic rates are required, and thus the MBSS isn't the
+same and the network stops working.
+
+Fix this by simply using only 1Mbps as the basic rate in 2.4GHz.
+Since the changed mandatory rates only affected 2.4GHz, this is
+all we need to make it work again.
+
+Reported-and-tested-by: Matthias Schiffer <mschiffer@universe-factory.net>
+Fixes: 1bd773c077de ("wireless: set correct mandatory rate flags")
+Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+---
+ net/wireless/mesh.c | 25 ++++++++++++++++++++++---
+ 1 file changed, 22 insertions(+), 3 deletions(-)
+
+--- a/net/wireless/mesh.c
++++ b/net/wireless/mesh.c
+@@ -169,9 +169,28 @@ int __cfg80211_join_mesh(struct cfg80211
+ enum nl80211_bss_scan_width scan_width;
+ struct ieee80211_supported_band *sband =
+ rdev->wiphy.bands[setup->chandef.chan->band];
+- scan_width = cfg80211_chandef_to_scan_width(&setup->chandef);
+- setup->basic_rates = ieee80211_mandatory_rates(sband,
+- scan_width);
++
++ if (setup->chandef.chan->band == NL80211_BAND_2GHZ) {
++ int i;
++
++ /*
++ * Older versions selected the mandatory rates for
++ * 2.4 GHz as well, but were broken in that only
++ * 1 Mbps was regarded as a mandatory rate. Keep
++ * using just 1 Mbps as the default basic rate for
++ * mesh to be interoperable with older versions.
++ */
++ for (i = 0; i < sband->n_bitrates; i++) {
++ if (sband->bitrates[i].bitrate == 10) {
++ setup->basic_rates = BIT(i);
++ break;
++ }
++ }
++ } else {
++ scan_width = cfg80211_chandef_to_scan_width(&setup->chandef);
++ setup->basic_rates = ieee80211_mandatory_rates(sband,
++ scan_width);
++ }
+ }
+
+ err = cfg80211_chandef_dfs_required(&rdev->wiphy,
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sat, 10 Feb 2018 12:41:51 +0100
+Subject: [PATCH] mac80211: minstrel: remove unnecessary debugfs cleanup
+ code
+
+debugfs entries are cleaned up by debugfs_remove_recursive already.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/rc80211_minstrel.c
++++ b/net/mac80211/rc80211_minstrel.c
+@@ -689,8 +689,8 @@ minstrel_alloc(struct ieee80211_hw *hw,
+
+ #ifdef CPTCFG_MAC80211_DEBUGFS
+ mp->fixed_rate_idx = (u32) -1;
+- mp->dbg_fixed_rate = debugfs_create_u32("fixed_rate_idx",
+- S_IRUGO | S_IWUGO, debugfsdir, &mp->fixed_rate_idx);
++ debugfs_create_u32("fixed_rate_idx", S_IRUGO | S_IWUGO, debugfsdir,
++ &mp->fixed_rate_idx);
+ #endif
+
+ minstrel_init_cck_rates(mp);
+@@ -701,9 +701,6 @@ minstrel_alloc(struct ieee80211_hw *hw,
+ static void
+ minstrel_free(void *priv)
+ {
+-#ifdef CPTCFG_MAC80211_DEBUGFS
+- debugfs_remove(((struct minstrel_priv *)priv)->dbg_fixed_rate);
+-#endif
+ kfree(priv);
+ }
+
+@@ -735,7 +732,6 @@ const struct rate_control_ops mac80211_m
+ .free_sta = minstrel_free_sta,
+ #ifdef CPTCFG_MAC80211_DEBUGFS
+ .add_sta_debugfs = minstrel_add_sta_debugfs,
+- .remove_sta_debugfs = minstrel_remove_sta_debugfs,
+ #endif
+ .get_expected_throughput = minstrel_get_expected_throughput,
+ };
+--- a/net/mac80211/rc80211_minstrel.h
++++ b/net/mac80211/rc80211_minstrel.h
+@@ -109,11 +109,6 @@ struct minstrel_sta_info {
+
+ /* sampling table */
+ u8 *sample_table;
+-
+-#ifdef CPTCFG_MAC80211_DEBUGFS
+- struct dentry *dbg_stats;
+- struct dentry *dbg_stats_csv;
+-#endif
+ };
+
+ struct minstrel_priv {
+@@ -137,7 +132,6 @@ struct minstrel_priv {
+ * - setting will be applied on next update
+ */
+ u32 fixed_rate_idx;
+- struct dentry *dbg_fixed_rate;
+ #endif
+ };
+
+@@ -156,7 +150,6 @@ minstrel_get_ewmsd10(struct minstrel_rat
+
+ extern const struct rate_control_ops mac80211_minstrel;
+ void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
+-void minstrel_remove_sta_debugfs(void *priv, void *priv_sta);
+
+ /* Recalculate success probabilities and counters for a given rate using EWMA */
+ void minstrel_calc_rate_stats(struct minstrel_rate_stats *mrs);
+--- a/net/mac80211/rc80211_minstrel_debugfs.c
++++ b/net/mac80211/rc80211_minstrel_debugfs.c
+@@ -214,19 +214,7 @@ minstrel_add_sta_debugfs(void *priv, voi
+ {
+ struct minstrel_sta_info *mi = priv_sta;
+
+- mi->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, mi,
+- &minstrel_stat_fops);
+-
+- mi->dbg_stats_csv = debugfs_create_file("rc_stats_csv", S_IRUGO, dir,
+- mi, &minstrel_stat_csv_fops);
+-}
+-
+-void
+-minstrel_remove_sta_debugfs(void *priv, void *priv_sta)
+-{
+- struct minstrel_sta_info *mi = priv_sta;
+-
+- debugfs_remove(mi->dbg_stats);
+-
+- debugfs_remove(mi->dbg_stats_csv);
++ 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
+@@ -1393,7 +1393,6 @@ static const struct rate_control_ops mac
+ .free = minstrel_ht_free,
+ #ifdef CPTCFG_MAC80211_DEBUGFS
+ .add_sta_debugfs = minstrel_ht_add_sta_debugfs,
+- .remove_sta_debugfs = minstrel_ht_remove_sta_debugfs,
+ #endif
+ .get_expected_throughput = minstrel_ht_get_expected_throughput,
+ };
+--- a/net/mac80211/rc80211_minstrel_ht.h
++++ b/net/mac80211/rc80211_minstrel_ht.h
+@@ -110,17 +110,12 @@ struct minstrel_ht_sta_priv {
+ struct minstrel_ht_sta ht;
+ struct minstrel_sta_info legacy;
+ };
+-#ifdef CPTCFG_MAC80211_DEBUGFS
+- struct dentry *dbg_stats;
+- struct dentry *dbg_stats_csv;
+-#endif
+ void *ratelist;
+ void *sample_table;
+ bool is_ht;
+ };
+
+ void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
+-void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta);
+ int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate,
+ int prob_ewma);
+
+--- a/net/mac80211/rc80211_minstrel_ht_debugfs.c
++++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c
+@@ -303,17 +303,8 @@ minstrel_ht_add_sta_debugfs(void *priv,
+ {
+ struct minstrel_ht_sta_priv *msp = priv_sta;
+
+- msp->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, msp,
+- &minstrel_ht_stat_fops);
+- msp->dbg_stats_csv = debugfs_create_file("rc_stats_csv", S_IRUGO,
+- dir, msp, &minstrel_ht_stat_csv_fops);
+-}
+-
+-void
+-minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta)
+-{
+- struct minstrel_ht_sta_priv *msp = priv_sta;
+-
+- debugfs_remove(msp->dbg_stats);
+- debugfs_remove(msp->dbg_stats_csv);
++ debugfs_create_file("rc_stats", S_IRUGO, dir, msp,
++ &minstrel_ht_stat_fops);
++ debugfs_create_file("rc_stats_csv", S_IRUGO, dir, msp,
++ &minstrel_ht_stat_csv_fops);
+ }
--- /dev/null
+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)
+ {
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sat, 10 Feb 2018 12:45:47 +0100
+Subject: [PATCH] mac80211: minstrel: reduce minstrel_mcs_groups size
+
+By storing a shift value for all duration values of a group, we can
+reduce precision by a neglegible amount to make it fit into a u16 value.
+This improves cache footprint and reduces size:
+
+Before:
+ text data bss dec hex filename
+ 10024 116 0 10140 279c rc80211_minstrel_ht.o
+
+After:
+ text data bss dec hex filename
+ 9368 116 0 9484 250c rc80211_minstrel_ht.o
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/rc80211_minstrel_ht.c
++++ b/net/mac80211/rc80211_minstrel_ht.c
+@@ -52,22 +52,23 @@
+ _streams - 1
+
+ /* MCS rate information for an MCS group */
+-#define MCS_GROUP(_streams, _sgi, _ht40) \
++#define MCS_GROUP(_streams, _sgi, _ht40, _s) \
+ [GROUP_IDX(_streams, _sgi, _ht40)] = { \
+ .streams = _streams, \
++ .shift = _s, \
+ .flags = \
+ IEEE80211_TX_RC_MCS | \
+ (_sgi ? IEEE80211_TX_RC_SHORT_GI : 0) | \
+ (_ht40 ? IEEE80211_TX_RC_40_MHZ_WIDTH : 0), \
+ .duration = { \
+- MCS_DURATION(_streams, _sgi, _ht40 ? 54 : 26), \
+- MCS_DURATION(_streams, _sgi, _ht40 ? 108 : 52), \
+- MCS_DURATION(_streams, _sgi, _ht40 ? 162 : 78), \
+- MCS_DURATION(_streams, _sgi, _ht40 ? 216 : 104), \
+- MCS_DURATION(_streams, _sgi, _ht40 ? 324 : 156), \
+- MCS_DURATION(_streams, _sgi, _ht40 ? 432 : 208), \
+- MCS_DURATION(_streams, _sgi, _ht40 ? 486 : 234), \
+- MCS_DURATION(_streams, _sgi, _ht40 ? 540 : 260) \
++ MCS_DURATION(_streams, _sgi, _ht40 ? 54 : 26) >> _s, \
++ MCS_DURATION(_streams, _sgi, _ht40 ? 108 : 52) >> _s, \
++ MCS_DURATION(_streams, _sgi, _ht40 ? 162 : 78) >> _s, \
++ MCS_DURATION(_streams, _sgi, _ht40 ? 216 : 104) >> _s, \
++ MCS_DURATION(_streams, _sgi, _ht40 ? 324 : 156) >> _s, \
++ MCS_DURATION(_streams, _sgi, _ht40 ? 432 : 208) >> _s, \
++ MCS_DURATION(_streams, _sgi, _ht40 ? 486 : 234) >> _s, \
++ MCS_DURATION(_streams, _sgi, _ht40 ? 540 : 260) >> _s \
+ } \
+ }
+
+@@ -80,9 +81,10 @@
+ #define BW2VBPS(_bw, r3, r2, r1) \
+ (_bw == BW_80 ? r3 : _bw == BW_40 ? r2 : r1)
+
+-#define VHT_GROUP(_streams, _sgi, _bw) \
++#define VHT_GROUP(_streams, _sgi, _bw, _s) \
+ [VHT_GROUP_IDX(_streams, _sgi, _bw)] = { \
+ .streams = _streams, \
++ .shift = _s, \
+ .flags = \
+ IEEE80211_TX_RC_VHT_MCS | \
+ (_sgi ? IEEE80211_TX_RC_SHORT_GI : 0) | \
+@@ -90,25 +92,25 @@
+ _bw == BW_40 ? IEEE80211_TX_RC_40_MHZ_WIDTH : 0), \
+ .duration = { \
+ MCS_DURATION(_streams, _sgi, \
+- BW2VBPS(_bw, 117, 54, 26)), \
++ BW2VBPS(_bw, 117, 54, 26)) >> _s, \
+ MCS_DURATION(_streams, _sgi, \
+- BW2VBPS(_bw, 234, 108, 52)), \
++ BW2VBPS(_bw, 234, 108, 52)) >> _s, \
+ MCS_DURATION(_streams, _sgi, \
+- BW2VBPS(_bw, 351, 162, 78)), \
++ BW2VBPS(_bw, 351, 162, 78)) >> _s, \
+ MCS_DURATION(_streams, _sgi, \
+- BW2VBPS(_bw, 468, 216, 104)), \
++ BW2VBPS(_bw, 468, 216, 104)) >> _s, \
+ MCS_DURATION(_streams, _sgi, \
+- BW2VBPS(_bw, 702, 324, 156)), \
++ BW2VBPS(_bw, 702, 324, 156)) >> _s, \
+ MCS_DURATION(_streams, _sgi, \
+- BW2VBPS(_bw, 936, 432, 208)), \
++ BW2VBPS(_bw, 936, 432, 208)) >> _s, \
+ MCS_DURATION(_streams, _sgi, \
+- BW2VBPS(_bw, 1053, 486, 234)), \
++ BW2VBPS(_bw, 1053, 486, 234)) >> _s, \
+ MCS_DURATION(_streams, _sgi, \
+- BW2VBPS(_bw, 1170, 540, 260)), \
++ BW2VBPS(_bw, 1170, 540, 260)) >> _s, \
+ MCS_DURATION(_streams, _sgi, \
+- BW2VBPS(_bw, 1404, 648, 312)), \
++ BW2VBPS(_bw, 1404, 648, 312)) >> _s, \
+ MCS_DURATION(_streams, _sgi, \
+- BW2VBPS(_bw, 1560, 720, 346)) \
++ BW2VBPS(_bw, 1560, 720, 346)) >> _s \
+ } \
+ }
+
+@@ -121,19 +123,20 @@
+ (CCK_DURATION((_bitrate > 10 ? 20 : 10), false, 60) + \
+ CCK_DURATION(_bitrate, _short, AVG_PKT_SIZE))
+
+-#define CCK_DURATION_LIST(_short) \
+- CCK_ACK_DURATION(10, _short), \
+- CCK_ACK_DURATION(20, _short), \
+- CCK_ACK_DURATION(55, _short), \
+- CCK_ACK_DURATION(110, _short)
++#define CCK_DURATION_LIST(_short, _s) \
++ CCK_ACK_DURATION(10, _short) >> _s, \
++ CCK_ACK_DURATION(20, _short) >> _s, \
++ CCK_ACK_DURATION(55, _short) >> _s, \
++ CCK_ACK_DURATION(110, _short) >> _s
+
+-#define CCK_GROUP \
++#define CCK_GROUP(_s) \
+ [MINSTREL_CCK_GROUP] = { \
+ .streams = 0, \
+ .flags = 0, \
++ .shift = _s, \
+ .duration = { \
+- CCK_DURATION_LIST(false), \
+- CCK_DURATION_LIST(true) \
++ CCK_DURATION_LIST(false, _s), \
++ CCK_DURATION_LIST(true, _s) \
+ } \
+ }
+
+@@ -151,47 +154,47 @@ MODULE_PARM_DESC(minstrel_vht_only,
+ * BW -> SGI -> #streams
+ */
+ const struct mcs_group minstrel_mcs_groups[] = {
+- MCS_GROUP(1, 0, BW_20),
+- MCS_GROUP(2, 0, BW_20),
+- MCS_GROUP(3, 0, BW_20),
++ MCS_GROUP(1, 0, BW_20, 5),
++ MCS_GROUP(2, 0, BW_20, 4),
++ MCS_GROUP(3, 0, BW_20, 4),
+
+- MCS_GROUP(1, 1, BW_20),
+- MCS_GROUP(2, 1, BW_20),
+- MCS_GROUP(3, 1, BW_20),
++ MCS_GROUP(1, 1, BW_20, 5),
++ MCS_GROUP(2, 1, BW_20, 4),
++ MCS_GROUP(3, 1, BW_20, 4),
+
+- MCS_GROUP(1, 0, BW_40),
+- MCS_GROUP(2, 0, BW_40),
+- MCS_GROUP(3, 0, BW_40),
++ MCS_GROUP(1, 0, BW_40, 4),
++ MCS_GROUP(2, 0, BW_40, 4),
++ MCS_GROUP(3, 0, BW_40, 4),
+
+- MCS_GROUP(1, 1, BW_40),
+- MCS_GROUP(2, 1, BW_40),
+- MCS_GROUP(3, 1, BW_40),
++ MCS_GROUP(1, 1, BW_40, 4),
++ MCS_GROUP(2, 1, BW_40, 4),
++ MCS_GROUP(3, 1, BW_40, 4),
+
+- CCK_GROUP,
++ CCK_GROUP(8),
+
+- VHT_GROUP(1, 0, BW_20),
+- VHT_GROUP(2, 0, BW_20),
+- VHT_GROUP(3, 0, BW_20),
++ VHT_GROUP(1, 0, BW_20, 5),
++ VHT_GROUP(2, 0, BW_20, 4),
++ VHT_GROUP(3, 0, BW_20, 4),
+
+- VHT_GROUP(1, 1, BW_20),
+- VHT_GROUP(2, 1, BW_20),
+- VHT_GROUP(3, 1, BW_20),
++ VHT_GROUP(1, 1, BW_20, 5),
++ VHT_GROUP(2, 1, BW_20, 4),
++ VHT_GROUP(3, 1, BW_20, 4),
+
+- VHT_GROUP(1, 0, BW_40),
+- VHT_GROUP(2, 0, BW_40),
+- VHT_GROUP(3, 0, BW_40),
++ VHT_GROUP(1, 0, BW_40, 4),
++ VHT_GROUP(2, 0, BW_40, 4),
++ VHT_GROUP(3, 0, BW_40, 4),
+
+- VHT_GROUP(1, 1, BW_40),
+- VHT_GROUP(2, 1, BW_40),
+- VHT_GROUP(3, 1, BW_40),
++ VHT_GROUP(1, 1, BW_40, 4),
++ VHT_GROUP(2, 1, BW_40, 4),
++ VHT_GROUP(3, 1, BW_40, 4),
+
+- VHT_GROUP(1, 0, BW_80),
+- VHT_GROUP(2, 0, BW_80),
+- VHT_GROUP(3, 0, BW_80),
++ VHT_GROUP(1, 0, BW_80, 4),
++ VHT_GROUP(2, 0, BW_80, 4),
++ VHT_GROUP(3, 0, BW_80, 4),
+
+- VHT_GROUP(1, 1, BW_80),
+- VHT_GROUP(2, 1, BW_80),
+- VHT_GROUP(3, 1, BW_80),
++ VHT_GROUP(1, 1, BW_80, 4),
++ VHT_GROUP(2, 1, BW_80, 4),
++ VHT_GROUP(3, 1, BW_80, 4),
+ };
+
+ static u8 sample_table[SAMPLE_COLUMNS][MCS_GROUP_RATES] __read_mostly;
+@@ -307,7 +310,8 @@ minstrel_ht_get_tp_avg(struct minstrel_h
+ if (group != MINSTREL_CCK_GROUP)
+ nsecs = 1000 * mi->overhead / MINSTREL_TRUNC(mi->avg_ampdu_len);
+
+- nsecs += minstrel_mcs_groups[group].duration[rate];
++ nsecs += minstrel_mcs_groups[group].duration[rate] <<
++ minstrel_mcs_groups[group].shift;
+
+ /*
+ * For the throughput calculation, limit the probability value to 90% to
+@@ -755,12 +759,19 @@ minstrel_ht_tx_status(void *priv, struct
+ minstrel_ht_update_rates(mp, mi);
+ }
+
++static inline int
++minstrel_get_duration(int index)
++{
++ const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
++ unsigned int duration = group->duration[index % MCS_GROUP_RATES];
++ return duration << group->shift;
++}
++
+ static void
+ minstrel_calc_retransmit(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
+ int index)
+ {
+ struct minstrel_rate_stats *mrs;
+- const struct mcs_group *group;
+ unsigned int tx_time, tx_time_rtscts, tx_time_data;
+ unsigned int cw = mp->cw_min;
+ unsigned int ctime = 0;
+@@ -779,8 +790,7 @@ minstrel_calc_retransmit(struct minstrel
+ mrs->retry_count_rtscts = 2;
+ mrs->retry_updated = true;
+
+- group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
+- tx_time_data = group->duration[index % MCS_GROUP_RATES] * ampdu_len / 1000;
++ tx_time_data = minstrel_get_duration(index) * ampdu_len / 1000;
+
+ /* Contention time for first 2 tries */
+ ctime = (t_slot * cw) >> 1;
+@@ -874,20 +884,24 @@ minstrel_ht_get_max_amsdu_len(struct min
+ int group = mi->max_prob_rate / MCS_GROUP_RATES;
+ const struct mcs_group *g = &minstrel_mcs_groups[group];
+ int rate = mi->max_prob_rate % MCS_GROUP_RATES;
++ unsigned int duration;
+
+ /* Disable A-MSDU if max_prob_rate is bad */
+ if (mi->groups[group].rates[rate].prob_ewma < MINSTREL_FRAC(50, 100))
+ return 1;
+
++ duration = g->duration[rate];
++ duration <<= g->shift;
++
+ /* If the rate is slower than single-stream MCS1, make A-MSDU limit small */
+- if (g->duration[rate] > MCS_DURATION(1, 0, 52))
++ if (duration > MCS_DURATION(1, 0, 52))
+ return 500;
+
+ /*
+ * If the rate is slower than single-stream MCS4, limit A-MSDU to usual
+ * data packet size
+ */
+- if (g->duration[rate] > MCS_DURATION(1, 0, 104))
++ if (duration > MCS_DURATION(1, 0, 104))
+ return 1600;
+
+ /*
+@@ -895,7 +909,7 @@ minstrel_ht_get_max_amsdu_len(struct min
+ * rate success probability is less than 75%, limit A-MSDU to twice the usual
+ * data packet size
+ */
+- if (g->duration[rate] > MCS_DURATION(1, 0, 260) ||
++ if (duration > MCS_DURATION(1, 0, 260) ||
+ (minstrel_ht_get_prob_ewma(mi, mi->max_tp_rate[0]) <
+ MINSTREL_FRAC(75, 100)))
+ return 3200;
+@@ -942,13 +956,6 @@ minstrel_ht_update_rates(struct minstrel
+ rate_control_set_rates(mp->hw, mi->sta, rates);
+ }
+
+-static inline int
+-minstrel_get_duration(int index)
+-{
+- const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
+- return group->duration[index % MCS_GROUP_RATES];
+-}
+-
+ static int
+ minstrel_get_sample_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
+ {
+--- a/net/mac80211/rc80211_minstrel_ht.h
++++ b/net/mac80211/rc80211_minstrel_ht.h
+@@ -33,9 +33,10 @@
+ #define MCS_GROUP_RATES 10
+
+ struct mcs_group {
+- u32 flags;
+- unsigned int streams;
+- unsigned int duration[MCS_GROUP_RATES];
++ u16 flags;
++ u8 streams;
++ u8 shift;
++ u16 duration[MCS_GROUP_RATES];
+ };
+
+ extern const struct mcs_group minstrel_mcs_groups[];
+--- a/net/mac80211/rc80211_minstrel_ht_debugfs.c
++++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c
+@@ -58,6 +58,7 @@ minstrel_ht_stats_dump(struct minstrel_h
+ static const int bitrates[4] = { 10, 20, 55, 110 };
+ int idx = i * MCS_GROUP_RATES + j;
+ unsigned int prob_ewmsd;
++ unsigned int duration;
+
+ if (!(mi->supported[i] & BIT(j)))
+ continue;
+@@ -95,7 +96,9 @@ minstrel_ht_stats_dump(struct minstrel_h
+ p += sprintf(p, " %3u ", idx);
+
+ /* tx_time[rate(i)] in usec */
+- tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000);
++ duration = mg->duration[j];
++ duration <<= mg->shift;
++ tx_time = DIV_ROUND_CLOSEST(duration, 1000);
+ p += sprintf(p, "%6u ", tx_time);
+
+ tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
+@@ -204,6 +207,7 @@ minstrel_ht_stats_csv_dump(struct minstr
+ static const int bitrates[4] = { 10, 20, 55, 110 };
+ int idx = i * MCS_GROUP_RATES + j;
+ unsigned int prob_ewmsd;
++ unsigned int duration;
+
+ if (!(mi->supported[i] & BIT(j)))
+ continue;
+@@ -238,7 +242,10 @@ minstrel_ht_stats_csv_dump(struct minstr
+ }
+
+ p += sprintf(p, "%u,", idx);
+- tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000);
++
++ duration = mg->duration[j];
++ duration <<= mg->shift;
++ tx_time = DIV_ROUND_CLOSEST(duration, 1000);
+ p += sprintf(p, "%u,", tx_time);
+
+ tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sat, 10 Feb 2018 13:43:07 +0100
+Subject: [PATCH] mac80211: minstrel: fix using short preamble CCK rates on
+ HT clients
+
+mi->supported[MINSTREL_CCK_GROUP] needs to be updated
+
+Fixes: 782dda00ab8e ("mac80211: minstrel_ht: move short preamble check out of get_rate")
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/rc80211_minstrel_ht.c
++++ b/net/mac80211/rc80211_minstrel_ht.c
+@@ -1268,7 +1268,8 @@ minstrel_ht_update_caps(void *priv, stru
+ goto use_legacy;
+
+ if (test_sta_flag(sinfo, WLAN_STA_SHORT_PREAMBLE))
+- mi->cck_supported_short |= mi->cck_supported_short << 4;
++ mi->supported[MINSTREL_CCK_GROUP] |=
++ mi->cck_supported_short << 4;
+
+ /* create an initial rate table with the lowest supported rates */
+ minstrel_ht_update_stats(mp, mi);
--- /dev/null
+From: =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= <toke@toke.dk>
+Date: Fri, 2 Feb 2018 11:36:45 +0100
+Subject: [PATCH] ath9k: Protect queue draining by rcu_read_lock()
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+When ath9k was switched over to use the mac80211 intermediate queues,
+node cleanup now drains the mac80211 queues. However, this call path is
+not protected by rcu_read_lock() as it was previously entirely internal
+to the driver which uses its own locking.
+
+This leads to a possible rcu_dereference() without holding
+rcu_read_lock(); but only if a station is cleaned up while having
+packets queued on the TXQ. Fix this by adding the rcu_read_lock() to the
+caller in ath9k.
+
+Fixes: 50f08edf9809 ("ath9k: Switch to using mac80211 intermediate software queues.")
+Cc: stable@vger.kernel.org
+Reported-by: Ben Greear <greearb@candelatech.com>
+Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -2930,6 +2930,8 @@ void ath_tx_node_cleanup(struct ath_soft
+ struct ath_txq *txq;
+ int tidno;
+
++ rcu_read_lock();
++
+ for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) {
+ tid = ath_node_to_tid(an, tidno);
+ txq = tid->txq;
+@@ -2947,6 +2949,8 @@ void ath_tx_node_cleanup(struct ath_soft
+ if (!an->sta)
+ break; /* just one multicast ath_atx_tid */
+ }
++
++ rcu_read_unlock();
+ }
+
+ #ifdef CPTCFG_ATH9K_TX99
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Thu, 1 Mar 2018 13:27:54 +0100
+Subject: [PATCH] mac80211: minstrel: fix CCK rate group streams value
+
+Fixes a harmless underflow issue when CCK rates are actively being used
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/rc80211_minstrel_ht.c
++++ b/net/mac80211/rc80211_minstrel_ht.c
+@@ -131,7 +131,7 @@
+
+ #define CCK_GROUP(_s) \
+ [MINSTREL_CCK_GROUP] = { \
+- .streams = 0, \
++ .streams = 1, \
+ .flags = 0, \
+ .shift = _s, \
+ .duration = { \
--- /dev/null
+From: Felix Fietkau <nbd@nbd.name>
+Date: Thu, 1 Mar 2018 13:28:48 +0100
+Subject: [PATCH] mac80211: minstrel: fix sampling/reporting of CCK rates
+ in HT mode
+
+Long/short preamble selection cannot be sampled separately, since it
+depends on the BSS state. Because of that, sampling attempts to
+currently not used preamble modes are not counted in the statistics,
+which leads to CCK rates being sampled too often.
+
+Fix statistics accounting for long/short preamble by increasing the
+index where necessary.
+Fix excessive CCK rate sampling by dropping unsupported sample attempts.
+
+This improves throughput on 2.4 GHz channels
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/rc80211_minstrel_ht.c
++++ b/net/mac80211/rc80211_minstrel_ht.c
+@@ -281,7 +281,8 @@ minstrel_ht_get_stats(struct minstrel_pr
+ break;
+
+ /* short preamble */
+- if (!(mi->supported[group] & BIT(idx)))
++ if ((mi->supported[group] & BIT(idx + 4)) &&
++ (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE))
+ idx += 4;
+ }
+ return &mi->groups[group].rates[idx];
+@@ -1080,18 +1081,23 @@ minstrel_ht_get_rate(void *priv, struct
+ return;
+
+ sample_group = &minstrel_mcs_groups[sample_idx / MCS_GROUP_RATES];
++ sample_idx %= MCS_GROUP_RATES;
++
++ if (sample_group == &minstrel_mcs_groups[MINSTREL_CCK_GROUP] &&
++ (sample_idx >= 4) != txrc->short_preamble)
++ return;
++
+ info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
+ rate->count = 1;
+
+- if (sample_idx / MCS_GROUP_RATES == MINSTREL_CCK_GROUP) {
++ if (sample_group == &minstrel_mcs_groups[MINSTREL_CCK_GROUP]) {
+ int idx = sample_idx % ARRAY_SIZE(mp->cck_rates);
+ rate->idx = mp->cck_rates[idx];
+ } else if (sample_group->flags & IEEE80211_TX_RC_VHT_MCS) {
+ ieee80211_rate_set_vht(rate, sample_idx % MCS_GROUP_RATES,
+ sample_group->streams);
+ } else {
+- rate->idx = sample_idx % MCS_GROUP_RATES +
+- (sample_group->streams - 1) * 8;
++ rate->idx = sample_idx + (sample_group->streams - 1) * 8;
+ }
+
+ rate->flags = sample_group->flags;
projects / openwrt / openwrt.git / commitdiff