ieee80211: bump IEEE80211_MAX_AMPDU_BUF to support HE

Bump the IEEE80211_MAX_AMPDU_BUF size to 0x100 for HE support
and - for now - use IEEE80211_MAX_AMPDU_BUF_HT everywhere.

This is derived from my internal patch, parts of which Luca
had sent upstream.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

10 files changed, 14 insertions, 15 deletions

diff --git a/drivers/net/wireless/realtek/rtlwifi/base.c b/drivers/net/wireless/realtek/rtlwifi/base.c
index 39c817eddd78..31bd6f714052 100644
--- a/drivers/net/wireless/realtek/rtlwifi/base.c
+++ b/drivers/net/wireless/realtek/rtlwifi/base.c
@@ -1904,7 +1904,7 @@ void rtl_rx_ampdu_apply(struct rtl_priv *rtlpriv)
                  reject_agg, ctrl_agg_size, agg_size);
 
         rtlpriv->hw->max_rx_aggregation_subframes =
-                (ctrl_agg_size ? agg_size : IEEE80211_MAX_AMPDU_BUF);
+                (ctrl_agg_size ? agg_size : IEEE80211_MAX_AMPDU_BUF_HT);
 }
 EXPORT_SYMBOL(rtl_rx_ampdu_apply);
 
diff --git a/drivers/staging/rtl8188eu/include/wifi.h b/drivers/staging/rtl8188eu/include/wifi.h
index 084a246eec19..6790b7c8cfb1 100644
--- a/drivers/staging/rtl8188eu/include/wifi.h
+++ b/drivers/staging/rtl8188eu/include/wifi.h
@@ -575,7 +575,6 @@ enum ht_cap_ampdu_factor {
  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
  */
 #define IEEE80211_MIN_AMPDU_BUF 0x8
-#define IEEE80211_MAX_AMPDU_BUF 0x40
 
 
 #define OP_MODE_PURE                    0
diff --git a/drivers/staging/rtl8712/wifi.h b/drivers/staging/rtl8712/wifi.h
index 0ed2f44ab4e9..00a4302e9983 100644
--- a/drivers/staging/rtl8712/wifi.h
+++ b/drivers/staging/rtl8712/wifi.h
@@ -574,7 +574,6 @@ struct ieee80211_ht_addt_info {
  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
  */
 #define IEEE80211_MIN_AMPDU_BUF 0x8
-#define IEEE80211_MAX_AMPDU_BUF 0x40
 
 
 /* Spatial Multiplexing Power Save Modes */
diff --git a/drivers/staging/rtl8723bs/include/wifi.h b/drivers/staging/rtl8723bs/include/wifi.h
index 08bc79840b23..559bf2606fb7 100644
--- a/drivers/staging/rtl8723bs/include/wifi.h
+++ b/drivers/staging/rtl8723bs/include/wifi.h
@@ -799,7 +799,6 @@ enum HT_CAP_AMPDU_FACTOR {
  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
  */
 #define IEEE80211_MIN_AMPDU_BUF 0x8
-#define IEEE80211_MAX_AMPDU_BUF 0x40
 
 
 /* Spatial Multiplexing Power Save Modes */
diff --git a/drivers/staging/rtlwifi/base.c b/drivers/staging/rtlwifi/base.c
index e46e47d93d7d..094827c1879a 100644
--- a/drivers/staging/rtlwifi/base.c
+++ b/drivers/staging/rtlwifi/base.c
@@ -1838,7 +1838,7 @@ void rtl_rx_ampdu_apply(struct rtl_priv *rtlpriv)
                  reject_agg, ctrl_agg_size, agg_size);
 
         rtlpriv->hw->max_rx_aggregation_subframes =
-                (ctrl_agg_size ? agg_size : IEEE80211_MAX_AMPDU_BUF);
+                (ctrl_agg_size ? agg_size : IEEE80211_MAX_AMPDU_BUF_HT);
 }
 
 /*********************************************************
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index e6a6503bfa33..9c03a7d5e400 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1433,11 +1433,13 @@ struct ieee80211_ht_operation {
 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
 
 /*
- * A-PMDU buffer sizes
- * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
+ * A-MPDU buffer sizes
+ * According to HT size varies from 8 to 64 frames
+ * HE adds the ability to have up to 256 frames.
  */
-#define IEEE80211_MIN_AMPDU_BUF 0x8
-#define IEEE80211_MAX_AMPDU_BUF 0x40
+#define IEEE80211_MIN_AMPDU_BUF         0x8
+#define IEEE80211_MAX_AMPDU_BUF_HT      0x40
+#define IEEE80211_MAX_AMPDU_BUF         0x100
 
 
 /* Spatial Multiplexing Power Save Modes (for capability) */
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index e83c19d4c292..3ffd853b483f 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -274,7 +274,7 @@ void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
         /* XXX: check own ht delayed BA capability?? */
         if (((ba_policy != 1) &&
              (!(sta->sta.ht_cap.cap & IEEE80211_HT_CAP_DELAY_BA))) ||
-            (buf_size > IEEE80211_MAX_AMPDU_BUF)) {
+            (buf_size > IEEE80211_MAX_AMPDU_BUF_HT)) {
                 status = WLAN_STATUS_INVALID_QOS_PARAM;
                 ht_dbg_ratelimited(sta->sdata,
                                    "AddBA Req with bad params from %pM on tid %u. policy %d, buffer size %d\n",
@@ -283,7 +283,7 @@ void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
         }
         /* determine default buffer size */
         if (buf_size == 0)
-                buf_size = IEEE80211_MAX_AMPDU_BUF;
+                buf_size = IEEE80211_MAX_AMPDU_BUF_HT;
 
         /* make sure the size doesn't exceed the maximum supported by the hw */
         if (buf_size > sta->sta.max_rx_aggregation_subframes)
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index ac4295296514..86c6bc0432ba 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -514,7 +514,7 @@ void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid)
         /* send AddBA request */
         ieee80211_send_addba_request(sdata, sta->sta.addr, tid,
                                      tid_tx->dialog_token, params.ssn,
-                                     IEEE80211_MAX_AMPDU_BUF,
+                                     IEEE80211_MAX_AMPDU_BUF_HT,
                                      tid_tx->timeout);
 }
 
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index 26a7ba3b698f..f849ea814993 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -352,7 +352,7 @@ void ieee80211_ba_session_work(struct work_struct *work)
                     test_and_clear_bit(tid,
                                        sta->ampdu_mlme.tid_rx_manage_offl))
                         ___ieee80211_start_rx_ba_session(sta, 0, 0, 0, 1, tid,
-                                                         IEEE80211_MAX_AMPDU_BUF,
+                                                         IEEE80211_MAX_AMPDU_BUF_HT,
                                                          false, true);
 
                 if (test_and_clear_bit(tid + IEEE80211_NUM_TIDS,
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index a6f8e3a646d4..070f77862014 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -597,8 +597,8 @@ struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
         local->hw.queues = 1;
         local->hw.max_rates = 1;
         local->hw.max_report_rates = 0;
-        local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
-        local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
+        local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT;
+        local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT;
         local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
         local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
         local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;