ath9k: fix some bugs related to txop limit handling and aggregation

SVN-Revision: 32658

diff --git a/package/mac80211/patches/568-ath9k_fix_txop_limit.patch b/package/mac80211/patches/568-ath9k_fix_txop_limit.patch
new file mode 100644 (file)
index 0000000..255ec29
--- /dev/null
+++ b/package/mac80211/patches/568-ath9k_fix_txop_limit.patch
@@ -0,0 +1,22 @@
+--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
++++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+@@ -1351,7 +1351,7 @@ static int ath9k_htc_conf_tx(struct ieee
+       qi.tqi_aifs = params->aifs;
+       qi.tqi_cwmin = params->cw_min;
+       qi.tqi_cwmax = params->cw_max;
+-      qi.tqi_burstTime = params->txop;
++      qi.tqi_burstTime = params->txop * 32;
+ 
+       qnum = get_hw_qnum(queue, priv->hwq_map);
+ 
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -1359,7 +1359,7 @@ static int ath9k_conf_tx(struct ieee8021
+       qi.tqi_aifs = params->aifs;
+       qi.tqi_cwmin = params->cw_min;
+       qi.tqi_cwmax = params->cw_max;
+-      qi.tqi_burstTime = params->txop;
++      qi.tqi_burstTime = params->txop * 32;
+ 
+       ath_dbg(common, CONFIG,
+               "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",

diff --git a/package/mac80211/patches/569-ath9k_fix_max_aggr_duration.patch b/package/mac80211/patches/569-ath9k_fix_max_aggr_duration.patch
new file mode 100644 (file)
index 0000000..b2fbf59
--- /dev/null
+++ b/package/mac80211/patches/569-ath9k_fix_max_aggr_duration.patch
@@ -0,0 +1,125 @@
+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -298,6 +298,7 @@ struct ath_tx {
+       struct ath_descdma txdma;
+       struct ath_txq *txq_map[WME_NUM_AC];
+       u32 txq_max_pending[WME_NUM_AC];
++      u16 max_aggr_framelen[WME_NUM_AC][4][32];
+ };
+ 
+ struct ath_rx_edma {
+@@ -342,6 +343,7 @@ int ath_tx_init(struct ath_softc *sc, in
+ void ath_tx_cleanup(struct ath_softc *sc);
+ int ath_txq_update(struct ath_softc *sc, int qnum,
+                  struct ath9k_tx_queue_info *q);
++void ath_update_max_aggr_framelen(struct ath_softc *sc, int queue, int txop);
+ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
+                struct ath_tx_control *txctl);
+ void ath_tx_tasklet(struct ath_softc *sc);
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -29,6 +29,8 @@
+ #define HT_LTF(_ns)             (4 * (_ns))
+ #define SYMBOL_TIME(_ns)        ((_ns) << 2) /* ns * 4 us */
+ #define SYMBOL_TIME_HALFGI(_ns) (((_ns) * 18 + 4) / 5)  /* ns * 3.6 us */
++#define TIME_SYMBOLS(t)         ((t) >> 2)
++#define TIME_SYMBOLS_HALFGI(t)  (((t) * 5 - 4) / 18)
+ #define NUM_SYMBOLS_PER_USEC(_usec) (_usec >> 2)
+ #define NUM_SYMBOLS_PER_USEC_HALFGI(_usec) (((_usec*5)-4)/18)
+ 
+@@ -74,33 +76,6 @@ enum {
+       MCS_HT40_SGI,
+ };
+ 
+-static int ath_max_4ms_framelen[4][32] = {
+-      [MCS_HT20] = {
+-              3212,  6432,  9648,  12864,  19300,  25736,  28952,  32172,
+-              6424,  12852, 19280, 25708,  38568,  51424,  57852,  64280,
+-              9628,  19260, 28896, 38528,  57792,  65532,  65532,  65532,
+-              12828, 25656, 38488, 51320,  65532,  65532,  65532,  65532,
+-      },
+-      [MCS_HT20_SGI] = {
+-              3572,  7144,  10720,  14296,  21444,  28596,  32172,  35744,
+-              7140,  14284, 21428,  28568,  42856,  57144,  64288,  65532,
+-              10700, 21408, 32112,  42816,  64228,  65532,  65532,  65532,
+-              14256, 28516, 42780,  57040,  65532,  65532,  65532,  65532,
+-      },
+-      [MCS_HT40] = {
+-              6680,  13360,  20044,  26724,  40092,  53456,  60140,  65532,
+-              13348, 26700,  40052,  53400,  65532,  65532,  65532,  65532,
+-              20004, 40008,  60016,  65532,  65532,  65532,  65532,  65532,
+-              26644, 53292,  65532,  65532,  65532,  65532,  65532,  65532,
+-      },
+-      [MCS_HT40_SGI] = {
+-              7420,  14844,  22272,  29696,  44544,  59396,  65532,  65532,
+-              14832, 29668,  44504,  59340,  65532,  65532,  65532,  65532,
+-              22232, 44464,  65532,  65532,  65532,  65532,  65532,  65532,
+-              29616, 59232,  65532,  65532,  65532,  65532,  65532,  65532,
+-      }
+-};
+-
+ /*********************/
+ /* Aggregation logic */
+ /*********************/
+@@ -648,6 +623,7 @@ static u32 ath_lookup_rate(struct ath_so
+       struct ieee80211_tx_rate *rates;
+       u32 max_4ms_framelen, frmlen;
+       u16 aggr_limit, bt_aggr_limit, legacy = 0;
++      int q = tid->ac->txq->mac80211_qnum;
+       int i;
+ 
+       skb = bf->bf_mpdu;
+@@ -680,7 +656,7 @@ static u32 ath_lookup_rate(struct ath_so
+               if (rates[i].flags & IEEE80211_TX_RC_SHORT_GI)
+                       modeidx++;
+ 
+-              frmlen = ath_max_4ms_framelen[modeidx][rates[i].idx];
++              frmlen = sc->tx.max_aggr_framelen[q][modeidx][rates[i].idx];
+               max_4ms_framelen = min(max_4ms_framelen, frmlen);
+       }
+ 
+@@ -927,6 +903,44 @@ static u32 ath_pkt_duration(struct ath_s
+       return duration;
+ }
+ 
++static int ath_max_framelen(int usec, int mcs, bool ht40, bool sgi)
++{
++      int streams = HT_RC_2_STREAMS(mcs);
++      int symbols, bits;
++      int bytes = 0;
++
++      symbols = sgi ? TIME_SYMBOLS_HALFGI(usec) : TIME_SYMBOLS(usec);
++      bits = symbols * bits_per_symbol[mcs % 8][ht40] * streams;
++      bits -= OFDM_PLCP_BITS;
++      bytes = bits / 8;
++      bytes -= L_STF + L_LTF + L_SIG + HT_SIG + HT_STF + HT_LTF(streams);
++      if (bytes > 65532)
++              bytes = 65532;
++
++      return bytes;
++}
++
++void ath_update_max_aggr_framelen(struct ath_softc *sc, int queue, int txop)
++{
++      u16 *cur_ht20, *cur_ht20_sgi, *cur_ht40, *cur_ht40_sgi;
++      int mcs;
++
++      /* 4ms is the default (and maximum) duration */
++      if (!txop || txop > 4096)
++              txop = 4096;
++
++      cur_ht20 = sc->tx.max_aggr_framelen[queue][MCS_HT20];
++      cur_ht20_sgi = sc->tx.max_aggr_framelen[queue][MCS_HT20_SGI];
++      cur_ht40 = sc->tx.max_aggr_framelen[queue][MCS_HT40];
++      cur_ht40_sgi = sc->tx.max_aggr_framelen[queue][MCS_HT40_SGI];
++      for (mcs = 0; mcs < 32; mcs++) {
++              cur_ht20[mcs] = ath_max_framelen(txop, mcs, false, false);
++              cur_ht20_sgi[mcs] = ath_max_framelen(txop, mcs, false, true);
++              cur_ht40[mcs] = ath_max_framelen(txop, mcs, true, false);
++              cur_ht40_sgi[mcs] = ath_max_framelen(txop, mcs, true, true);
++      }
++}
++
+ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf,
+                            struct ath_tx_info *info, int len)
+ {