Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

 1) Support ipv6 checksum offload in sunvnet driver, from Shannon
    Nelson.

 2) Move to RB-tree instead of custom AVL code in inetpeer, from Eric
    Dumazet.

 3) Allow generic XDP to work on virtual devices, from John Fastabend.

 4) Add bpf device maps and XDP_REDIRECT, which can be used to build
    arbitrary switching frameworks using XDP. From John Fastabend.

 5) Remove UFO offloads from the tree, gave us little other than bugs.

 6) Remove the IPSEC flow cache, from Florian Westphal.

 7) Support ipv6 route offload in mlxsw driver.

 8) Support VF representors in bnxt_en, from Sathya Perla.

 9) Add support for forward error correction modes to ethtool, from
    Vidya Sagar Ravipati.

10) Add time filter for packet scheduler action dumping, from Jamal Hadi
    Salim.

11) Extend the zerocopy sendmsg() used by virtio and tap to regular
    sockets via MSG_ZEROCOPY. From Willem de Bruijn.

12) Significantly rework value tracking in the BPF verifier, from Edward
    Cree.

13) Add new jump instructions to eBPF, from Daniel Borkmann.

14) Rework rtnetlink plumbing so that operations can be run without
    taking the RTNL semaphore. From Florian Westphal.

15) Support XDP in tap driver, from Jason Wang.

16) Add 32-bit eBPF JIT for ARM, from Shubham Bansal.

17) Add Huawei hinic ethernet driver.

18) Allow to report MD5 keys in TCP inet_diag dumps, from Ivan
    Delalande.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1780 commits)
  i40e: point wb_desc at the nvm_wb_desc during i40e_read_nvm_aq
  i40e: avoid NVM acquire deadlock during NVM update
  drivers: net: xgene: Remove return statement from void function
  drivers: net: xgene: Configure tx/rx delay for ACPI
  drivers: net: xgene: Read tx/rx delay for ACPI
  rocker: fix kcalloc parameter order
  rds: Fix non-atomic operation on shared flag variable
  net: sched: don't use GFP_KERNEL under spin lock
  vhost_net: correctly check tx avail during rx busy polling
  net: mdio-mux: add mdio_mux parameter to mdio_mux_init()
  rxrpc: Make service connection lookup always check for retry
  net: stmmac: Delete dead code for MDIO registration
  gianfar: Fix Tx flow control deactivation
  cxgb4: Ignore MPS_TX_INT_CAUSE[Bubble] for T6
  cxgb4: Fix pause frame count in t4_get_port_stats
  cxgb4: fix memory leak
  tun: rename generic_xdp to skb_xdp
  tun: reserve extra headroom only when XDP is set
  net: dsa: bcm_sf2: Configure IMP port TC2QOS mapping
  net: dsa: bcm_sf2: Advertise number of egress queues
  ...

1 files changed, 77 insertions, 65 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
index 8999a1199d60..ba7bd049d3d4 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
@@ -622,7 +622,9 @@ static int rs_tl_turn_on_agg_for_tid(struct iwl_mvm *mvm,
 
 	IWL_DEBUG_HT(mvm, "Starting Tx agg: STA: %pM tid: %d\n",
 		     sta->addr, tid);
-	ret = ieee80211_start_tx_ba_session(sta, tid, 5000);
+
+	/* start BA session until the peer sends del BA */
+	ret = ieee80211_start_tx_ba_session(sta, tid, 0);
 	if (ret == -EAGAIN) {
 		/*
 		 * driver and mac80211 is out of sync
@@ -636,15 +638,31 @@ static int rs_tl_turn_on_agg_for_tid(struct iwl_mvm *mvm,
 	return ret;
 }
 
-static void rs_tl_turn_on_agg(struct iwl_mvm *mvm, u8 tid,
-			      struct iwl_lq_sta *lq_data,
+static void rs_tl_turn_on_agg(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
+			      u8 tid, struct iwl_lq_sta *lq_sta,
 			      struct ieee80211_sta *sta)
 {
-	if (tid < IWL_MAX_TID_COUNT)
-		rs_tl_turn_on_agg_for_tid(mvm, lq_data, tid, sta);
-	else
+	struct iwl_mvm_tid_data *tid_data;
+
+	/*
+	 * In AP mode, tid can be equal to IWL_MAX_TID_COUNT
+	 * when the frame is not QoS
+	 */
+	if (WARN_ON_ONCE(tid > IWL_MAX_TID_COUNT)) {
 		IWL_ERR(mvm, "tid exceeds max TID count: %d/%d\n",
 			tid, IWL_MAX_TID_COUNT);
+		return;
+	} else if (tid == IWL_MAX_TID_COUNT) {
+		return;
+	}
+
+	tid_data = &mvmsta->tid_data[tid];
+	if ((tid_data->state == IWL_AGG_OFF) &&
+	    (lq_sta->tx_agg_tid_en & BIT(tid)) &&
+	    (tid_data->tx_count_last >= IWL_MVM_RS_AGG_START_THRESHOLD)) {
+		IWL_DEBUG_RATE(mvm, "try to aggregate tid %d\n", tid);
+		rs_tl_turn_on_agg_for_tid(mvm, lq_sta, tid, sta);
+	}
 }
 
 static inline int get_num_of_ant_from_rate(u32 rate_n_flags)
@@ -753,8 +771,38 @@ static int rs_collect_tpc_data(struct iwl_mvm *mvm,
 				    window);
 }
 
+static void rs_update_tid_tpt_stats(struct iwl_mvm *mvm,
+				    struct iwl_mvm_sta *mvmsta,
+				    u8 tid, int successes)
+{
+	struct iwl_mvm_tid_data *tid_data;
+
+	if (tid >= IWL_MAX_TID_COUNT)
+		return;
+
+	tid_data = &mvmsta->tid_data[tid];
+
+	/*
+	 * Measure if there're enough successful transmits per second.
+	 * These statistics are used only to decide if we can start a
+	 * BA session, so it should be updated only when A-MPDU is
+	 * off.
+	 */
+	if (tid_data->state != IWL_AGG_OFF)
+		return;
+
+	if (time_is_before_jiffies(tid_data->tpt_meas_start + HZ) ||
+	    (tid_data->tx_count >= IWL_MVM_RS_AGG_START_THRESHOLD)) {
+		tid_data->tx_count_last = tid_data->tx_count;
+		tid_data->tx_count = 0;
+		tid_data->tpt_meas_start = jiffies;
+	} else {
+		tid_data->tx_count += successes;
+	}
+}
+
 static int rs_collect_tlc_data(struct iwl_mvm *mvm,
-			       struct iwl_lq_sta *lq_sta,
+			       struct iwl_mvm_sta *mvmsta, u8 tid,
 			       struct iwl_scale_tbl_info *tbl,
 			       int scale_index, int attempts, int successes)
 {
@@ -764,12 +812,14 @@ static int rs_collect_tlc_data(struct iwl_mvm *mvm,
 		return -EINVAL;
 
 	if (tbl->column != RS_COLUMN_INVALID) {
-		struct lq_sta_pers *pers = &lq_sta->pers;
+		struct lq_sta_pers *pers = &mvmsta->lq_sta.pers;
 
 		pers->tx_stats[tbl->column][scale_index].total += attempts;
 		pers->tx_stats[tbl->column][scale_index].success += successes;
 	}
 
+	rs_update_tid_tpt_stats(mvm, mvmsta, tid, successes);
+
 	/* Select window for current tx bit rate */
 	window = &(tbl->win[scale_index]);
 	return _rs_collect_tx_data(mvm, tbl, scale_index, attempts, successes,
@@ -1211,12 +1261,7 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 	if (time_after(jiffies,
 		       (unsigned long)(lq_sta->last_tx +
 				       (IWL_MVM_RS_IDLE_TIMEOUT * HZ)))) {
-		int t;
-
 		IWL_DEBUG_RATE(mvm, "Tx idle for too long. reinit rs\n");
-		for (t = 0; t < IWL_MAX_TID_COUNT; t++)
-			ieee80211_stop_tx_ba_session(sta, t);
-
 		iwl_mvm_rs_rate_init(mvm, sta, info->band, false);
 		return;
 	}
@@ -1312,7 +1357,7 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 		if (info->status.ampdu_ack_len == 0)
 			info->status.ampdu_len = 1;
 
-		rs_collect_tlc_data(mvm, lq_sta, curr_tbl, tx_resp_rate.index,
+		rs_collect_tlc_data(mvm, mvmsta, tid, curr_tbl, tx_resp_rate.index,
 				    info->status.ampdu_len,
 				    info->status.ampdu_ack_len);
 
@@ -1351,7 +1396,7 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 					    tx_resp_rate.index, 1,
 					    i < retries ? 0 : legacy_success,
 					    reduced_txp);
-			rs_collect_tlc_data(mvm, lq_sta, tmp_tbl,
+			rs_collect_tlc_data(mvm, mvmsta, tid, tmp_tbl,
 					    tx_resp_rate.index, 1,
 					    i < retries ? 0 : legacy_success);
 		}
@@ -1673,14 +1718,14 @@ static void rs_set_amsdu_len(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 			     struct iwl_scale_tbl_info *tbl,
 			     enum rs_action scale_action)
 {
-	struct iwl_mvm_sta *sta_priv = iwl_mvm_sta_from_mac80211(sta);
+	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 
 	if ((!is_vht(&tbl->rate) && !is_ht(&tbl->rate)) ||
 	    tbl->rate.index < IWL_RATE_MCS_5_INDEX ||
 	    scale_action == RS_ACTION_DOWNSCALE)
-		sta_priv->tlc_amsdu = false;
+		mvmsta->tlc_amsdu = false;
 	else
-		sta_priv->tlc_amsdu = true;
+		mvmsta->tlc_amsdu = true;
 }
 
 /*
@@ -2228,11 +2273,10 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
 	u16 high_low;
 	s32 sr;
 	u8 prev_agg = lq_sta->is_agg;
-	struct iwl_mvm_sta *sta_priv = iwl_mvm_sta_from_mac80211(sta);
-	struct iwl_mvm_tid_data *tid_data;
+	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 	struct rs_rate *rate;
 
-	lq_sta->is_agg = !!sta_priv->agg_tids;
+	lq_sta->is_agg = !!mvmsta->agg_tids;
 
 	/*
 	 * Select rate-scale / modulation-mode table to work with in
@@ -2480,44 +2524,12 @@ lq_update:
 		}
 	}
 
+	if (!ndp)
+		rs_tl_turn_on_agg(mvm, mvmsta, tid, lq_sta, sta);
+
 	if (done_search && lq_sta->rs_state == RS_STATE_SEARCH_CYCLE_ENDED) {
-		/* If the "active" (non-search) mode was legacy,
-		 * and we've tried switching antennas,
-		 * but we haven't been able to try HT modes (not available),
-		 * stay with best antenna legacy modulation for a while
-		 * before next round of mode comparisons. */
 		tbl1 = &(lq_sta->lq_info[lq_sta->active_tbl]);
-		if (is_legacy(&tbl1->rate)) {
-			IWL_DEBUG_RATE(mvm, "LQ: STAY in legacy table\n");
-
-			if (tid != IWL_MAX_TID_COUNT) {
-				tid_data = &sta_priv->tid_data[tid];
-				if (tid_data->state != IWL_AGG_OFF) {
-					IWL_DEBUG_RATE(mvm,
-						       "Stop aggregation on tid %d\n",
-						       tid);
-					ieee80211_stop_tx_ba_session(sta, tid);
-				}
-			}
-			rs_set_stay_in_table(mvm, 1, lq_sta);
-		} else {
-		/* If we're in an HT mode, and all 3 mode switch actions
-		 * have been tried and compared, stay in this best modulation
-		 * mode for a while before next round of mode comparisons. */
-			if ((lq_sta->last_tpt > IWL_AGG_TPT_THREHOLD) &&
-			    (lq_sta->tx_agg_tid_en & (1 << tid)) &&
-			    (tid != IWL_MAX_TID_COUNT)) {
-				tid_data = &sta_priv->tid_data[tid];
-				if (tid_data->state == IWL_AGG_OFF && !ndp) {
-					IWL_DEBUG_RATE(mvm,
-						       "try to aggregate tid %d\n",
-						       tid);
-					rs_tl_turn_on_agg(mvm, tid,
-							  lq_sta, sta);
-				}
-			}
-			rs_set_stay_in_table(mvm, 0, lq_sta);
-		}
+		rs_set_stay_in_table(mvm, is_legacy(&tbl1->rate), lq_sta);
 	}
 }
 
@@ -2900,10 +2912,10 @@ static void rs_get_rate(void *mvm_r, struct ieee80211_sta *sta, void *mvm_sta,
 static void *rs_alloc_sta(void *mvm_rate, struct ieee80211_sta *sta,
 			  gfp_t gfp)
 {
-	struct iwl_mvm_sta *sta_priv = iwl_mvm_sta_from_mac80211(sta);
+	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 	struct iwl_op_mode *op_mode = (struct iwl_op_mode *)mvm_rate;
 	struct iwl_mvm *mvm  = IWL_OP_MODE_GET_MVM(op_mode);
-	struct iwl_lq_sta *lq_sta = &sta_priv->lq_sta;
+	struct iwl_lq_sta *lq_sta = &mvmsta->lq_sta;
 
 	IWL_DEBUG_RATE(mvm, "create station rate scale window\n");
 
@@ -2917,7 +2929,7 @@ static void *rs_alloc_sta(void *mvm_rate, struct ieee80211_sta *sta,
 	memset(lq_sta->pers.chain_signal, 0, sizeof(lq_sta->pers.chain_signal));
 	lq_sta->pers.last_rssi = S8_MIN;
 
-	return &sta_priv->lq_sta;
+	return &mvmsta->lq_sta;
 }
 
 static int rs_vht_highest_rx_mcs_index(struct ieee80211_sta_vht_cap *vht_cap,
@@ -3109,8 +3121,8 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 	struct ieee80211_hw *hw = mvm->hw;
 	struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
 	struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
-	struct iwl_mvm_sta *sta_priv = iwl_mvm_sta_from_mac80211(sta);
-	struct iwl_lq_sta *lq_sta = &sta_priv->lq_sta;
+	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+	struct iwl_lq_sta *lq_sta = &mvmsta->lq_sta;
 	struct ieee80211_supported_band *sband;
 	unsigned long supp; /* must be unsigned long for for_each_set_bit */
 
@@ -3119,8 +3131,8 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 
 	sband = hw->wiphy->bands[band];
 
-	lq_sta->lq.sta_id = sta_priv->sta_id;
-	sta_priv->tlc_amsdu = false;
+	lq_sta->lq.sta_id = mvmsta->sta_id;
+	mvmsta->tlc_amsdu = false;
 
 	for (j = 0; j < LQ_SIZE; j++)
 		rs_rate_scale_clear_tbl_windows(mvm, &lq_sta->lq_info[j]);
@@ -3130,7 +3142,7 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 
 	IWL_DEBUG_RATE(mvm,
 		       "LQ: *** rate scale station global init for station %d ***\n",
-		       sta_priv->sta_id);
+		       mvmsta->sta_id);
 	/* TODO: what is a good starting rate for STA? About middle? Maybe not
 	 * the lowest or the highest rate.. Could consider using RSSI from
 	 * previous packets? Need to have IEEE 802.1X auth succeed immediately