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mac80211/ath9k: some more performance improvements 

SVN-Revision: 30866
lede-17.01
Felix Fietkau 2012-03-10 12:59:40 +00:00
parent 7dff84b670
commit f728469200
5 changed files with 415 additions and 0 deletions
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129
package/mac80211/patches/560-ath9k_optimize_beacon_tx.patch Normal file
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@ -0,0 +1,129 @@
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -357,41 +357,12 @@ void ath_beacon_tasklet(unsigned long da
struct ieee80211_vif *vif;
bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
int slot;
- u32 bfaddr, bc = 0;
-
- /*
- * Check if the previous beacon has gone out. If
- * not don't try to post another, skip this period
- * and wait for the next. Missed beacons indicate
- * a problem and should not occur. If we miss too
- * many consecutive beacons reset the device.
- */
- if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0) {
- sc->beacon.bmisscnt++;
-
- if (sc->beacon.bmisscnt < BSTUCK_THRESH * sc->nbcnvifs) {
- ath_dbg(common, BSTUCK,
- "missed %u consecutive beacons\n",
- sc->beacon.bmisscnt);
- ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
- if (sc->beacon.bmisscnt > 3)
- ath9k_hw_bstuck_nfcal(ah);
- } else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
- ath_dbg(common, BSTUCK, "beacon is officially stuck\n");
- sc->sc_flags |= SC_OP_TSF_RESET;
- ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
- }
-
- return;
- }
/*
* Generate beacon frames. we are sending frames
* staggered so calculate the slot for this frame based
* on the tsf to safeguard against missing an swba.
*/
-
-
if (ah->opmode == NL80211_IFTYPE_AP) {
u16 intval;
u32 tsftu;
@@ -412,23 +383,6 @@ void ath_beacon_tasklet(unsigned long da
vif = sc->beacon.bslot[slot];
}
-
- bfaddr = 0;
- if (vif) {
- bf = ath_beacon_generate(sc->hw, vif);
- if (bf != NULL) {
- bfaddr = bf->bf_daddr;
- bc = 1;
- }
-
- if (sc->beacon.bmisscnt != 0) {
- ath_dbg(common, BSTUCK,
- "resume beacon xmit after %u misses\n",
- sc->beacon.bmisscnt);
- sc->beacon.bmisscnt = 0;
- }
- }
-
/*
* Handle slot time change when a non-ERP station joins/leaves
* an 11g network. The 802.11 layer notifies us via callback,
@@ -453,15 +407,54 @@ void ath_beacon_tasklet(unsigned long da
ath9k_hw_init_global_settings(ah);
sc->beacon.updateslot = OK;
}
- if (bfaddr != 0) {
- /* NB: cabq traffic should already be queued and primed */
- ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bfaddr);
- if (!edma)
- ath9k_hw_txstart(ah, sc->beacon.beaconq);
+ if (!vif)
+ return;
+
+ /*
+ * Check if the previous beacon has gone out. If
+ * not don't try to post another, skip this period
+ * and wait for the next. Missed beacons indicate
+ * a problem and should not occur. If we miss too
+ * many consecutive beacons reset the device.
+ */
+ if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0) {
+ sc->beacon.bmisscnt++;
+
+ if (sc->beacon.bmisscnt < BSTUCK_THRESH * sc->nbcnvifs) {
+ ath_dbg(common, BSTUCK,
+ "missed %u consecutive beacons\n",
+ sc->beacon.bmisscnt);
+ ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
+ if (sc->beacon.bmisscnt > 3)
+ ath9k_hw_bstuck_nfcal(ah);
+ } else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
+ ath_dbg(common, BSTUCK, "beacon is officially stuck\n");
+ sc->sc_flags |= SC_OP_TSF_RESET;
+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
+ }
+
+ return;
+ }
+
+ bf = ath_beacon_generate(sc->hw, vif);
+ if (!bf)
+ return;
- sc->beacon.ast_be_xmit += bc; /* XXX per-vif? */
+ if (sc->beacon.bmisscnt != 0) {
+ ath_dbg(common, BSTUCK,
+ "resume beacon xmit after %u misses\n",
+ sc->beacon.bmisscnt);
+ sc->beacon.bmisscnt = 0;
}
+
+ /* NB: cabq traffic should already be queued and primed */
+ ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bf->bf_daddr);
+
+ if (!edma)
+ ath9k_hw_txstart(ah, sc->beacon.beaconq);
+
+ sc->beacon.ast_be_xmit++;
}
static void ath9k_beacon_init(struct ath_softc *sc,

32
package/mac80211/patches/561-ath9k_optimize_hw_check.patch Normal file
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@ -0,0 +1,32 @@
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -421,6 +421,9 @@ void ath_beacon_tasklet(unsigned long da
if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0) {
sc->beacon.bmisscnt++;
+ if (!ath9k_hw_check_alive(ah))
+ ieee80211_queue_work(sc->hw, &sc->hw_check_work);
+
if (sc->beacon.bmisscnt < BSTUCK_THRESH * sc->nbcnvifs) {
ath_dbg(common, BSTUCK,
"missed %u consecutive beacons\n",
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -695,17 +695,6 @@ void ath9k_tasklet(unsigned long data)
goto out;
}
- /*
- * Only run the baseband hang check if beacons stop working in AP or
- * IBSS mode, because it has a high false positive rate. For station
- * mode it should not be necessary, since the upper layers will detect
- * this through a beacon miss automatically and the following channel
- * change will trigger a hardware reset anyway
- */
- if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0 &&
- !ath9k_hw_check_alive(ah))
- ieee80211_queue_work(sc->hw, &sc->hw_check_work);
-
if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
/*
* TSF sync does not look correct; remain awake to sync with

127
package/mac80211/patches/562-mac80211_remove_code_duplication.patch Normal file
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@ -0,0 +1,127 @@
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -445,26 +445,23 @@ IEEE80211_IF_FILE(dot11MeshHWMPRannInter
IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC);
#endif
-
-#define DEBUGFS_ADD(name) \
- debugfs_create_file(#name, 0400, sdata->debugfs.dir, \
- sdata, &name##_ops);
-
#define DEBUGFS_ADD_MODE(name, mode) \
debugfs_create_file(#name, mode, sdata->debugfs.dir, \
sdata, &name##_ops);
-static void add_sta_files(struct ieee80211_sub_if_data *sdata)
+#define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0400)
+
+static void add_common_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_ADD(drop_unencrypted);
- DEBUGFS_ADD(flags);
- DEBUGFS_ADD(state);
- DEBUGFS_ADD(channel_type);
DEBUGFS_ADD(rc_rateidx_mask_2ghz);
DEBUGFS_ADD(rc_rateidx_mask_5ghz);
DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
+}
+static void add_sta_files(struct ieee80211_sub_if_data *sdata)
+{
DEBUGFS_ADD(bssid);
DEBUGFS_ADD(aid);
DEBUGFS_ADD(last_beacon);
@@ -475,15 +472,6 @@ static void add_sta_files(struct ieee802
static void add_ap_files(struct ieee80211_sub_if_data *sdata)
{
- DEBUGFS_ADD(drop_unencrypted);
- DEBUGFS_ADD(flags);
- DEBUGFS_ADD(state);
- DEBUGFS_ADD(channel_type);
- DEBUGFS_ADD(rc_rateidx_mask_2ghz);
- DEBUGFS_ADD(rc_rateidx_mask_5ghz);
- DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
- DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
-
DEBUGFS_ADD(num_sta_authorized);
DEBUGFS_ADD(num_sta_ps);
DEBUGFS_ADD(dtim_count);
@@ -493,48 +481,14 @@ static void add_ap_files(struct ieee8021
static void add_ibss_files(struct ieee80211_sub_if_data *sdata)
{
- DEBUGFS_ADD(channel_type);
- DEBUGFS_ADD(rc_rateidx_mask_2ghz);
- DEBUGFS_ADD(rc_rateidx_mask_5ghz);
- DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
- DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
-
DEBUGFS_ADD_MODE(tsf, 0600);
}
static void add_wds_files(struct ieee80211_sub_if_data *sdata)
{
- DEBUGFS_ADD(drop_unencrypted);
- DEBUGFS_ADD(flags);
- DEBUGFS_ADD(state);
- DEBUGFS_ADD(channel_type);
- DEBUGFS_ADD(rc_rateidx_mask_2ghz);
- DEBUGFS_ADD(rc_rateidx_mask_5ghz);
- DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
- DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
-
DEBUGFS_ADD(peer);
}
-static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
-{
- DEBUGFS_ADD(drop_unencrypted);
- DEBUGFS_ADD(flags);
- DEBUGFS_ADD(state);
- DEBUGFS_ADD(channel_type);
- DEBUGFS_ADD(rc_rateidx_mask_2ghz);
- DEBUGFS_ADD(rc_rateidx_mask_5ghz);
- DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
- DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
-}
-
-static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
-{
- DEBUGFS_ADD(flags);
- DEBUGFS_ADD(state);
- DEBUGFS_ADD(channel_type);
-}
-
#ifdef CONFIG_MAC80211_MESH
static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
@@ -590,6 +544,13 @@ static void add_files(struct ieee80211_s
if (!sdata->debugfs.dir)
return;
+ DEBUGFS_ADD(flags);
+ DEBUGFS_ADD(state);
+ DEBUGFS_ADD(channel_type);
+
+ if (sdata->vif.type != NL80211_IFTYPE_MONITOR)
+ add_common_files(sdata);
+
switch (sdata->vif.type) {
case NL80211_IFTYPE_MESH_POINT:
#ifdef CONFIG_MAC80211_MESH
@@ -609,12 +570,6 @@ static void add_files(struct ieee80211_s
case NL80211_IFTYPE_WDS:
add_wds_files(sdata);
break;
- case NL80211_IFTYPE_MONITOR:
- add_monitor_files(sdata);
- break;
- case NL80211_IFTYPE_AP_VLAN:
- add_vlan_files(sdata);
- break;
default:
break;
}

97
package/mac80211/patches/563-mac80211_optimize_mcs_rate_mask.patch Normal file
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@ -0,0 +1,97 @@
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -656,6 +656,8 @@ struct ieee80211_sub_if_data {
/* bitmap of allowed (non-MCS) rate indexes for rate control */
u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
+
+ bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
union {
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1887,9 +1887,20 @@ static int ieee80211_set_bitrate_mask(st
}
for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
+ struct ieee80211_supported_band *sband = wiphy->bands[i];
+
sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
sizeof(mask->control[i].mcs));
+
+ sdata->rc_has_mcs_mask[i] = false;
+ if (!sband)
+ continue;
+
+ if (memcmp(sdata->rc_rateidx_mcs_mask[i],
+ sband->ht_cap.mcs.rx_mask,
+ sizeof(sband->ht_cap.mcs.rx_mask)) != 0)
+ sdata->rc_has_mcs_mask[i] = true;
}
return 0;
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -3590,6 +3590,7 @@ enum rate_control_changed {
* (deprecated; this will be removed once drivers get updated to use
* rate_idx_mask)
* @rate_idx_mask: user-requested rate mask (not MCS for now)
+ * @rate_idx_mcs_mask: user-requested MCS rate mask (NULL if not in use)
* @skb: the skb that will be transmitted, the control information in it needs
* to be filled in
* @bss: whether this frame is sent out in AP or IBSS mode
@@ -3603,7 +3604,7 @@ struct ieee80211_tx_rate_control {
bool rts, short_preamble;
u8 max_rate_idx;
u32 rate_idx_mask;
- u8 rate_idx_mcs_mask[IEEE80211_HT_MCS_MASK_LEN];
+ u8 *rate_idx_mcs_mask;
bool bss;
};
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -640,9 +640,11 @@ ieee80211_tx_h_rate_ctrl(struct ieee8021
txrc.max_rate_idx = -1;
else
txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1;
- memcpy(txrc.rate_idx_mcs_mask,
- tx->sdata->rc_rateidx_mcs_mask[tx->channel->band],
- sizeof(txrc.rate_idx_mcs_mask));
+
+ if (tx->sdata->rc_has_mcs_mask[tx->channel->band])
+ txrc.rate_idx_mcs_mask =
+ tx->sdata->rc_rateidx_mcs_mask[tx->channel->band];
+
txrc.bss = (tx->sdata->vif.type == NL80211_IFTYPE_AP ||
tx->sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
tx->sdata->vif.type == NL80211_IFTYPE_ADHOC);
@@ -2455,8 +2457,6 @@ struct sk_buff *ieee80211_beacon_get_tim
txrc.max_rate_idx = -1;
else
txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1;
- memcpy(txrc.rate_idx_mcs_mask, sdata->rc_rateidx_mcs_mask[band],
- sizeof(txrc.rate_idx_mcs_mask));
txrc.bss = true;
rate_control_get_rate(sdata, NULL, &txrc);
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -461,9 +461,12 @@ void rate_control_get_rate(struct ieee80
* the common case.
*/
mask = sdata->rc_rateidx_mask[info->band];
- memcpy(mcs_mask, sdata->rc_rateidx_mcs_mask[info->band],
- sizeof(mcs_mask));
- if (mask != (1 << txrc->sband->n_bitrates) - 1) {
+ if (mask != (1 << txrc->sband->n_bitrates) - 1 || txrc->rate_idx_mcs_mask) {
+ if (txrc->rate_idx_mcs_mask)
+ memcpy(mcs_mask, txrc->rate_idx_mcs_mask, sizeof(mcs_mask));
+ else
+ memset(mcs_mask, 0xff, sizeof(mcs_mask));
+
if (sta) {
/* Filter out rates that the STA does not support */
mask &= sta->sta.supp_rates[info->band];

30
package/mac80211/patches/564-ath9k_optimize_interrupt_mitigation.patch Normal file
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@ -0,0 +1,30 @@
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -237,21 +237,19 @@ static bool ar9003_hw_get_isr(struct ath
*masked = isr & ATH9K_INT_COMMON;
- if (ah->config.rx_intr_mitigation)
+ if (ah->config.rx_intr_mitigation) {
if (isr & (AR_ISR_RXMINTR | AR_ISR_RXINTM))
*masked |= ATH9K_INT_RXLP;
-
- if (ah->config.tx_intr_mitigation)
- if (isr & (AR_ISR_TXMINTR | AR_ISR_TXINTM))
- *masked |= ATH9K_INT_TX;
-
- if (isr & (AR_ISR_LP_RXOK | AR_ISR_RXERR))
+ } else if (isr & (AR_ISR_LP_RXOK | AR_ISR_RXERR))
*masked |= ATH9K_INT_RXLP;
if (isr & AR_ISR_HP_RXOK)
*masked |= ATH9K_INT_RXHP;
- if (isr & (AR_ISR_TXOK | AR_ISR_TXERR | AR_ISR_TXEOL)) {
+ if (ah->config.tx_intr_mitigation) {
+ if (isr & (AR_ISR_TXMINTR | AR_ISR_TXINTM))
+ *masked |= ATH9K_INT_TX;
+ } else if (isr & (AR_ISR_TXOK | AR_ISR_TXERR | AR_ISR_TXEOL)) {
*masked |= ATH9K_INT_TX;
if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) {