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

Pull networking updates from David Miller:
 "Highlights:

   1) Support SPI based w5100 devices, from Akinobu Mita.

   2) Partial Segmentation Offload, from Alexander Duyck.

   3) Add GMAC4 support to stmmac driver, from Alexandre TORGUE.

   4) Allow cls_flower stats offload, from Amir Vadai.

   5) Implement bpf blinding, from Daniel Borkmann.

   6) Optimize _ASYNC_ bit twiddling on sockets, unless the socket is
      actually using FASYNC these atomics are superfluous.  From Eric
      Dumazet.

   7) Run TCP more preemptibly, also from Eric Dumazet.

   8) Support LED blinking, EEPROM dumps, and rxvlan offloading in mlx5e
      driver, from Gal Pressman.

   9) Allow creating ppp devices via rtnetlink, from Guillaume Nault.

  10) Improve BPF usage documentation, from Jesper Dangaard Brouer.

  11) Support tunneling offloads in qed, from Manish Chopra.

  12) aRFS offloading in mlx5e, from Maor Gottlieb.

  13) Add RFS and RPS support to SCTP protocol, from Marcelo Ricardo
      Leitner.

  14) Add MSG_EOR support to TCP, this allows controlling packet
      coalescing on application record boundaries for more accurate
      socket timestamp sampling.  From Martin KaFai Lau.

  15) Fix alignment of 64-bit netlink attributes across the board, from
      Nicolas Dichtel.

  16) Per-vlan stats in bridging, from Nikolay Aleksandrov.

  17) Several conversions of drivers to ethtool ksettings, from Philippe
      Reynes.

  18) Checksum neutral ILA in ipv6, from Tom Herbert.

  19) Factorize all of the various marvell dsa drivers into one, from
      Vivien Didelot

  20) Add VF support to qed driver, from Yuval Mintz"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1649 commits)
  Revert "phy dp83867: Fix compilation with CONFIG_OF_MDIO=m"
  Revert "phy dp83867: Make rgmii parameters optional"
  r8169: default to 64-bit DMA on recent PCIe chips
  phy dp83867: Make rgmii parameters optional
  phy dp83867: Fix compilation with CONFIG_OF_MDIO=m
  bpf: arm64: remove callee-save registers use for tmp registers
  asix: Fix offset calculation in asix_rx_fixup() causing slow transmissions
  switchdev: pass pointer to fib_info instead of copy
  net_sched: close another race condition in tcf_mirred_release()
  tipc: fix nametable publication field in nl compat
  drivers: net: Don't print unpopulated net_device name
  qed: add support for dcbx.
  ravb: Add missing free_irq() calls to ravb_close()
  qed: Remove a stray tab
  net: ethernet: fec-mpc52xx: use phy_ethtool_{get|set}_link_ksettings
  net: ethernet: fec-mpc52xx: use phydev from struct net_device
  bpf, doc: fix typo on bpf_asm descriptions
  stmmac: hardware TX COE doesn't work when force_thresh_dma_mode is set
  net: ethernet: fs-enet: use phy_ethtool_{get|set}_link_ksettings
  net: ethernet: fs-enet: use phydev from struct net_device
  ...

1 files changed, 230 insertions, 70 deletions

diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c
index 95acb727c068..6269c610b0a3 100644
--- a/drivers/net/wireless/ath/ath10k/htt_tx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_tx.c
@@ -22,53 +22,183 @@
 #include "txrx.h"
 #include "debug.h"
 
-void __ath10k_htt_tx_dec_pending(struct ath10k_htt *htt, bool limit_mgmt_desc)
+static u8 ath10k_htt_tx_txq_calc_size(size_t count)
 {
-	if (limit_mgmt_desc)
-		htt->num_pending_mgmt_tx--;
+	int exp;
+	int factor;
+
+	exp = 0;
+	factor = count >> 7;
+
+	while (factor >= 64 && exp < 4) {
+		factor >>= 3;
+		exp++;
+	}
+
+	if (exp == 4)
+		return 0xff;
+
+	if (count > 0)
+		factor = max(1, factor);
+
+	return SM(exp, HTT_TX_Q_STATE_ENTRY_EXP) |
+	       SM(factor, HTT_TX_Q_STATE_ENTRY_FACTOR);
+}
+
+static void __ath10k_htt_tx_txq_recalc(struct ieee80211_hw *hw,
+				       struct ieee80211_txq *txq)
+{
+	struct ath10k *ar = hw->priv;
+	struct ath10k_sta *arsta = (void *)txq->sta->drv_priv;
+	struct ath10k_vif *arvif = (void *)txq->vif->drv_priv;
+	unsigned long frame_cnt;
+	unsigned long byte_cnt;
+	int idx;
+	u32 bit;
+	u16 peer_id;
+	u8 tid;
+	u8 count;
+
+	lockdep_assert_held(&ar->htt.tx_lock);
+
+	if (!ar->htt.tx_q_state.enabled)
+		return;
+
+	if (ar->htt.tx_q_state.mode != HTT_TX_MODE_SWITCH_PUSH_PULL)
+		return;
+
+	if (txq->sta)
+		peer_id = arsta->peer_id;
+	else
+		peer_id = arvif->peer_id;
+
+	tid = txq->tid;
+	bit = BIT(peer_id % 32);
+	idx = peer_id / 32;
+
+	ieee80211_txq_get_depth(txq, &frame_cnt, &byte_cnt);
+	count = ath10k_htt_tx_txq_calc_size(byte_cnt);
+
+	if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) ||
+	    unlikely(tid >= ar->htt.tx_q_state.num_tids)) {
+		ath10k_warn(ar, "refusing to update txq for peer_id %hu tid %hhu due to out of bounds\n",
+			    peer_id, tid);
+		return;
+	}
+
+	ar->htt.tx_q_state.vaddr->count[tid][peer_id] = count;
+	ar->htt.tx_q_state.vaddr->map[tid][idx] &= ~bit;
+	ar->htt.tx_q_state.vaddr->map[tid][idx] |= count ? bit : 0;
+
+	ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx txq state update peer_id %hu tid %hhu count %hhu\n",
+		   peer_id, tid, count);
+}
+
+static void __ath10k_htt_tx_txq_sync(struct ath10k *ar)
+{
+	u32 seq;
+	size_t size;
+
+	lockdep_assert_held(&ar->htt.tx_lock);
+
+	if (!ar->htt.tx_q_state.enabled)
+		return;
+
+	if (ar->htt.tx_q_state.mode != HTT_TX_MODE_SWITCH_PUSH_PULL)
+		return;
+
+	seq = le32_to_cpu(ar->htt.tx_q_state.vaddr->seq);
+	seq++;
+	ar->htt.tx_q_state.vaddr->seq = cpu_to_le32(seq);
+
+	ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx txq state update commit seq %u\n",
+		   seq);
+
+	size = sizeof(*ar->htt.tx_q_state.vaddr);
+	dma_sync_single_for_device(ar->dev,
+				   ar->htt.tx_q_state.paddr,
+				   size,
+				   DMA_TO_DEVICE);
+}
+
+void ath10k_htt_tx_txq_recalc(struct ieee80211_hw *hw,
+			      struct ieee80211_txq *txq)
+{
+	struct ath10k *ar = hw->priv;
+
+	spin_lock_bh(&ar->htt.tx_lock);
+	__ath10k_htt_tx_txq_recalc(hw, txq);
+	spin_unlock_bh(&ar->htt.tx_lock);
+}
+
+void ath10k_htt_tx_txq_sync(struct ath10k *ar)
+{
+	spin_lock_bh(&ar->htt.tx_lock);
+	__ath10k_htt_tx_txq_sync(ar);
+	spin_unlock_bh(&ar->htt.tx_lock);
+}
+
+void ath10k_htt_tx_txq_update(struct ieee80211_hw *hw,
+			      struct ieee80211_txq *txq)
+{
+	struct ath10k *ar = hw->priv;
+
+	spin_lock_bh(&ar->htt.tx_lock);
+	__ath10k_htt_tx_txq_recalc(hw, txq);
+	__ath10k_htt_tx_txq_sync(ar);
+	spin_unlock_bh(&ar->htt.tx_lock);
+}
+
+void ath10k_htt_tx_dec_pending(struct ath10k_htt *htt)
+{
+	lockdep_assert_held(&htt->tx_lock);
 
 	htt->num_pending_tx--;
 	if (htt->num_pending_tx == htt->max_num_pending_tx - 1)
 		ath10k_mac_tx_unlock(htt->ar, ATH10K_TX_PAUSE_Q_FULL);
 }
 
-static void ath10k_htt_tx_dec_pending(struct ath10k_htt *htt,
-				      bool limit_mgmt_desc)
+int ath10k_htt_tx_inc_pending(struct ath10k_htt *htt)
 {
-	spin_lock_bh(&htt->tx_lock);
-	__ath10k_htt_tx_dec_pending(htt, limit_mgmt_desc);
-	spin_unlock_bh(&htt->tx_lock);
+	lockdep_assert_held(&htt->tx_lock);
+
+	if (htt->num_pending_tx >= htt->max_num_pending_tx)
+		return -EBUSY;
+
+	htt->num_pending_tx++;
+	if (htt->num_pending_tx == htt->max_num_pending_tx)
+		ath10k_mac_tx_lock(htt->ar, ATH10K_TX_PAUSE_Q_FULL);
+
+	return 0;
 }
 
-static int ath10k_htt_tx_inc_pending(struct ath10k_htt *htt,
-				     bool limit_mgmt_desc, bool is_probe_resp)
+int ath10k_htt_tx_mgmt_inc_pending(struct ath10k_htt *htt, bool is_mgmt,
+				   bool is_presp)
 {
 	struct ath10k *ar = htt->ar;
-	int ret = 0;
 
-	spin_lock_bh(&htt->tx_lock);
+	lockdep_assert_held(&htt->tx_lock);
 
-	if (htt->num_pending_tx >= htt->max_num_pending_tx) {
-		ret = -EBUSY;
-		goto exit;
-	}
+	if (!is_mgmt || !ar->hw_params.max_probe_resp_desc_thres)
+		return 0;
 
-	if (limit_mgmt_desc) {
-		if (is_probe_resp && (htt->num_pending_mgmt_tx >
-		    ar->hw_params.max_probe_resp_desc_thres)) {
-			ret = -EBUSY;
-			goto exit;
-		}
-		htt->num_pending_mgmt_tx++;
-	}
+	if (is_presp &&
+	    ar->hw_params.max_probe_resp_desc_thres < htt->num_pending_mgmt_tx)
+		return -EBUSY;
 
-	htt->num_pending_tx++;
-	if (htt->num_pending_tx == htt->max_num_pending_tx)
-		ath10k_mac_tx_lock(htt->ar, ATH10K_TX_PAUSE_Q_FULL);
+	htt->num_pending_mgmt_tx++;
 
-exit:
-	spin_unlock_bh(&htt->tx_lock);
-	return ret;
+	return 0;
+}
+
+void ath10k_htt_tx_mgmt_dec_pending(struct ath10k_htt *htt)
+{
+	lockdep_assert_held(&htt->tx_lock);
+
+	if (!htt->ar->hw_params.max_probe_resp_desc_thres)
+		return;
+
+	htt->num_pending_mgmt_tx--;
 }
 
 int ath10k_htt_tx_alloc_msdu_id(struct ath10k_htt *htt, struct sk_buff *skb)
@@ -137,7 +267,8 @@ static void ath10k_htt_tx_free_txq(struct ath10k_htt *htt)
 	struct ath10k *ar = htt->ar;
 	size_t size;
 
-	if (!test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL, ar->fw_features))
+	if (!test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL,
+		      ar->running_fw->fw_file.fw_features))
 		return;
 
 	size = sizeof(*htt->tx_q_state.vaddr);
@@ -152,7 +283,8 @@ static int ath10k_htt_tx_alloc_txq(struct ath10k_htt *htt)
 	size_t size;
 	int ret;
 
-	if (!test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL, ar->fw_features))
+	if (!test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL,
+		      ar->running_fw->fw_file.fw_features))
 		return 0;
 
 	htt->tx_q_state.num_peers = HTT_TX_Q_STATE_NUM_PEERS;
@@ -209,8 +341,18 @@ int ath10k_htt_tx_alloc(struct ath10k_htt *htt)
 		goto free_frag_desc;
 	}
 
+	size = roundup_pow_of_two(htt->max_num_pending_tx);
+	ret = kfifo_alloc(&htt->txdone_fifo, size, GFP_KERNEL);
+	if (ret) {
+		ath10k_err(ar, "failed to alloc txdone fifo: %d\n", ret);
+		goto free_txq;
+	}
+
 	return 0;
 
+free_txq:
+	ath10k_htt_tx_free_txq(htt);
+
 free_frag_desc:
 	ath10k_htt_tx_free_cont_frag_desc(htt);
 
@@ -234,8 +376,8 @@ static int ath10k_htt_tx_clean_up_pending(int msdu_id, void *skb, void *ctx)
 
 	ath10k_dbg(ar, ATH10K_DBG_HTT, "force cleanup msdu_id %hu\n", msdu_id);
 
-	tx_done.discard = 1;
 	tx_done.msdu_id = msdu_id;
+	tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
 
 	ath10k_txrx_tx_unref(htt, &tx_done);
 
@@ -258,6 +400,8 @@ void ath10k_htt_tx_free(struct ath10k_htt *htt)
 
 	ath10k_htt_tx_free_txq(htt);
 	ath10k_htt_tx_free_cont_frag_desc(htt);
+	WARN_ON(!kfifo_is_empty(&htt->txdone_fifo));
+	kfifo_free(&htt->txdone_fifo);
 }
 
 void ath10k_htt_htc_tx_complete(struct ath10k *ar, struct sk_buff *skb)
@@ -371,7 +515,8 @@ int ath10k_htt_send_frag_desc_bank_cfg(struct ath10k_htt *htt)
 	info |= SM(htt->tx_q_state.type,
 		   HTT_FRAG_DESC_BANK_CFG_INFO_Q_STATE_DEPTH_TYPE);
 
-	if (test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL, ar->fw_features))
+	if (test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL,
+		     ar->running_fw->fw_file.fw_features))
 		info |= HTT_FRAG_DESC_BANK_CFG_INFO_Q_STATE_VALID;
 
 	cfg = &cmd->frag_desc_bank_cfg;
@@ -535,6 +680,55 @@ int ath10k_htt_h2t_aggr_cfg_msg(struct ath10k_htt *htt,
 	return 0;
 }
 
+int ath10k_htt_tx_fetch_resp(struct ath10k *ar,
+			     __le32 token,
+			     __le16 fetch_seq_num,
+			     struct htt_tx_fetch_record *records,
+			     size_t num_records)
+{
+	struct sk_buff *skb;
+	struct htt_cmd *cmd;
+	const u16 resp_id = 0;
+	int len = 0;
+	int ret;
+
+	/* Response IDs are echo-ed back only for host driver convienence
+	 * purposes. They aren't used for anything in the driver yet so use 0.
+	 */
+
+	len += sizeof(cmd->hdr);
+	len += sizeof(cmd->tx_fetch_resp);
+	len += sizeof(cmd->tx_fetch_resp.records[0]) * num_records;
+
+	skb = ath10k_htc_alloc_skb(ar, len);
+	if (!skb)
+		return -ENOMEM;
+
+	skb_put(skb, len);
+	cmd = (struct htt_cmd *)skb->data;
+	cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_TX_FETCH_RESP;
+	cmd->tx_fetch_resp.resp_id = cpu_to_le16(resp_id);
+	cmd->tx_fetch_resp.fetch_seq_num = fetch_seq_num;
+	cmd->tx_fetch_resp.num_records = cpu_to_le16(num_records);
+	cmd->tx_fetch_resp.token = token;
+
+	memcpy(cmd->tx_fetch_resp.records, records,
+	       sizeof(records[0]) * num_records);
+
+	ret = ath10k_htc_send(&ar->htc, ar->htt.eid, skb);
+	if (ret) {
+		ath10k_warn(ar, "failed to submit htc command: %d\n", ret);
+		goto err_free_skb;
+	}
+
+	return 0;
+
+err_free_skb:
+	dev_kfree_skb_any(skb);
+
+	return ret;
+}
+
 static u8 ath10k_htt_tx_get_vdev_id(struct ath10k *ar, struct sk_buff *skb)
 {
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
@@ -576,20 +770,6 @@ int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
 	int msdu_id = -1;
 	int res;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data;
-	bool limit_mgmt_desc = false;
-	bool is_probe_resp = false;
-
-	if (ar->hw_params.max_probe_resp_desc_thres) {
-		limit_mgmt_desc = true;
-
-		if (ieee80211_is_probe_resp(hdr->frame_control))
-			is_probe_resp = true;
-	}
-
-	res = ath10k_htt_tx_inc_pending(htt, limit_mgmt_desc, is_probe_resp);
-
-	if (res)
-		goto err;
 
 	len += sizeof(cmd->hdr);
 	len += sizeof(cmd->mgmt_tx);
@@ -598,7 +778,7 @@ int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
 	res = ath10k_htt_tx_alloc_msdu_id(htt, msdu);
 	spin_unlock_bh(&htt->tx_lock);
 	if (res < 0)
-		goto err_tx_dec;
+		goto err;
 
 	msdu_id = res;
 
@@ -649,8 +829,6 @@ err_free_msdu_id:
 	spin_lock_bh(&htt->tx_lock);
 	ath10k_htt_tx_free_msdu_id(htt, msdu_id);
 	spin_unlock_bh(&htt->tx_lock);
-err_tx_dec:
-	ath10k_htt_tx_dec_pending(htt, limit_mgmt_desc);
 err:
 	return res;
 }
@@ -677,26 +855,12 @@ int ath10k_htt_tx(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txmode,
 	u32 frags_paddr = 0;
 	u32 txbuf_paddr;
 	struct htt_msdu_ext_desc *ext_desc = NULL;
-	bool limit_mgmt_desc = false;
-	bool is_probe_resp = false;
-
-	if (unlikely(ieee80211_is_mgmt(hdr->frame_control)) &&
-	    ar->hw_params.max_probe_resp_desc_thres) {
-		limit_mgmt_desc = true;
-
-		if (ieee80211_is_probe_resp(hdr->frame_control))
-			is_probe_resp = true;
-	}
-
-	res = ath10k_htt_tx_inc_pending(htt, limit_mgmt_desc, is_probe_resp);
-	if (res)
-		goto err;
 
 	spin_lock_bh(&htt->tx_lock);
 	res = ath10k_htt_tx_alloc_msdu_id(htt, msdu);
 	spin_unlock_bh(&htt->tx_lock);
 	if (res < 0)
-		goto err_tx_dec;
+		goto err;
 
 	msdu_id = res;
 
@@ -862,11 +1026,7 @@ int ath10k_htt_tx(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txmode,
 err_unmap_msdu:
 	dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
 err_free_msdu_id:
-	spin_lock_bh(&htt->tx_lock);
 	ath10k_htt_tx_free_msdu_id(htt, msdu_id);
-	spin_unlock_bh(&htt->tx_lock);
-err_tx_dec:
-	ath10k_htt_tx_dec_pending(htt, limit_mgmt_desc);
 err:
 	return res;
 }