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

Pull networking updates from David Miller:

 1) BBR TCP congestion control, from Neal Cardwell, Yuchung Cheng and
    co. at Google. https://lwn.net/Articles/701165/

 2) Do TCP Small Queues for retransmits, from Eric Dumazet.

 3) Support collect_md mode for all IPV4 and IPV6 tunnels, from Alexei
    Starovoitov.

 4) Allow cls_flower to classify packets in ip tunnels, from Amir Vadai.

 5) Support DSA tagging in older mv88e6xxx switches, from Andrew Lunn.

 6) Support GMAC protocol in iwlwifi mwm, from Ayala Beker.

 7) Support ndo_poll_controller in mlx5, from Calvin Owens.

 8) Move VRF processing to an output hook and allow l3mdev to be
    loopback, from David Ahern.

 9) Support SOCK_DESTROY for UDP sockets. Also from David Ahern.

10) Congestion control in RXRPC, from David Howells.

11) Support geneve RX offload in ixgbe, from Emil Tantilov.

12) When hitting pressure for new incoming TCP data SKBs, perform a
    partial rathern than a full purge of the OFO queue (which could be
    huge). From Eric Dumazet.

13) Convert XFRM state and policy lookups to RCU, from Florian Westphal.

14) Support RX network flow classification to igb, from Gangfeng Huang.

15) Hardware offloading of eBPF in nfp driver, from Jakub Kicinski.

16) New skbmod packet action, from Jamal Hadi Salim.

17) Remove some inefficiencies in snmp proc output, from Jia He.

18) Add FIB notifications to properly propagate route changes to
    hardware which is doing forwarding offloading. From Jiri Pirko.

19) New dsa driver for qca8xxx chips, from John Crispin.

20) Implement RFC7559 ipv6 router solicitation backoff, from Maciej
    Żenczykowski.

21) Add L3 mode to ipvlan, from Mahesh Bandewar.

22) Support 802.1ad in mlx4, from Moshe Shemesh.

23) Support hardware LRO in mediatek driver, from Nelson Chang.

24) Add TC offloading to mlx5, from Or Gerlitz.

25) Convert various drivers to ethtool ksettings interfaces, from
    Philippe Reynes.

26) TX max rate limiting for cxgb4, from Rahul Lakkireddy.

27) NAPI support for ath10k, from Rajkumar Manoharan.

28) Support XDP in mlx5, from Rana Shahout and Saeed Mahameed.

29) UDP replicast support in TIPC, from Richard Alpe.

30) Per-queue statistics for qed driver, from Sudarsana Reddy Kalluru.

31) Support BQL in thunderx driver, from Sunil Goutham.

32) TSO support in alx driver, from Tobias Regnery.

33) Add stream parser engine and use it in kcm.

34) Support async DHCP replies in ipconfig module, from Uwe
    Kleine-König.

35) DSA port fast aging for mv88e6xxx driver, from Vivien Didelot.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1715 commits)
  mlxsw: switchx2: Fix misuse of hard_header_len
  mlxsw: spectrum: Fix misuse of hard_header_len
  net/faraday: Stop NCSI device on shutdown
  net/ncsi: Introduce ncsi_stop_dev()
  net/ncsi: Rework the channel monitoring
  net/ncsi: Allow to extend NCSI request properties
  net/ncsi: Rework request index allocation
  net/ncsi: Don't probe on the reserved channel ID (0x1f)
  net/ncsi: Introduce NCSI_RESERVED_CHANNEL
  net/ncsi: Avoid unused-value build warning from ia64-linux-gcc
  net: Add netdev all_adj_list refcnt propagation to fix panic
  net: phy: Add Edge-rate driver for Microsemi PHYs.
  vmxnet3: Wake queue from reset work
  i40e: avoid NULL pointer dereference and recursive errors on early PCI error
  qed: Add RoCE ll2 & GSI support
  qed: Add support for memory registeration verbs
  qed: Add support for QP verbs
  qed: PD,PKEY and CQ verb support
  qed: Add support for RoCE hw init
  qede: Add qedr framework
  ...

2 files changed, 92 insertions, 19 deletions

diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index d954a97b0b0b..63144bb413d1 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -541,6 +541,14 @@ static void macb_tx_unmap(struct macb *bp, struct macb_tx_skb *tx_skb)
 	}
 }
 
+static inline void macb_set_addr(struct macb_dma_desc *desc, dma_addr_t addr)
+{
+	desc->addr = (u32)addr;
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+	desc->addrh = (u32)(addr >> 32);
+#endif
+}
+
 static void macb_tx_error_task(struct work_struct *work)
 {
 	struct macb_queue	*queue = container_of(work, struct macb_queue,
@@ -621,14 +629,17 @@ static void macb_tx_error_task(struct work_struct *work)
 
 	/* Set end of TX queue */
 	desc = macb_tx_desc(queue, 0);
-	desc->addr = 0;
+	macb_set_addr(desc, 0);
 	desc->ctrl = MACB_BIT(TX_USED);
 
 	/* Make descriptor updates visible to hardware */
 	wmb();
 
 	/* Reinitialize the TX desc queue */
-	queue_writel(queue, TBQP, queue->tx_ring_dma);
+	queue_writel(queue, TBQP, (u32)(queue->tx_ring_dma));
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+	queue_writel(queue, TBQPH, (u32)(queue->tx_ring_dma >> 32));
+#endif
 	/* Make TX ring reflect state of hardware */
 	queue->tx_head = 0;
 	queue->tx_tail = 0;
@@ -750,7 +761,7 @@ static void gem_rx_refill(struct macb *bp)
 
 			if (entry == RX_RING_SIZE - 1)
 				paddr |= MACB_BIT(RX_WRAP);
-			bp->rx_ring[entry].addr = paddr;
+			macb_set_addr(&(bp->rx_ring[entry]), paddr);
 			bp->rx_ring[entry].ctrl = 0;
 
 			/* properly align Ethernet header */
@@ -798,7 +809,9 @@ static int gem_rx(struct macb *bp, int budget)
 	int			count = 0;
 
 	while (count < budget) {
-		u32 addr, ctrl;
+		u32 ctrl;
+		dma_addr_t addr;
+		bool rxused;
 
 		entry = macb_rx_ring_wrap(bp->rx_tail);
 		desc = &bp->rx_ring[entry];
@@ -806,10 +819,14 @@ static int gem_rx(struct macb *bp, int budget)
 		/* Make hw descriptor updates visible to CPU */
 		rmb();
 
-		addr = desc->addr;
+		rxused = (desc->addr & MACB_BIT(RX_USED)) ? true : false;
+		addr = MACB_BF(RX_WADDR, MACB_BFEXT(RX_WADDR, desc->addr));
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+		addr |= ((u64)(desc->addrh) << 32);
+#endif
 		ctrl = desc->ctrl;
 
-		if (!(addr & MACB_BIT(RX_USED)))
+		if (!rxused)
 			break;
 
 		bp->rx_tail++;
@@ -835,7 +852,6 @@ static int gem_rx(struct macb *bp, int budget)
 		netdev_vdbg(bp->dev, "gem_rx %u (len %u)\n", entry, len);
 
 		skb_put(skb, len);
-		addr = MACB_BF(RX_WADDR, MACB_BFEXT(RX_WADDR, addr));
 		dma_unmap_single(&bp->pdev->dev, addr,
 				 bp->rx_buffer_size, DMA_FROM_DEVICE);
 
@@ -1299,7 +1315,7 @@ static unsigned int macb_tx_map(struct macb *bp,
 			ctrl |= MACB_BIT(TX_WRAP);
 
 		/* Set TX buffer descriptor */
-		desc->addr = tx_skb->mapping;
+		macb_set_addr(desc, tx_skb->mapping);
 		/* desc->addr must be visible to hardware before clearing
 		 * 'TX_USED' bit in desc->ctrl.
 		 */
@@ -1382,7 +1398,7 @@ static int macb_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	if (macb_clear_csum(skb)) {
 		dev_kfree_skb_any(skb);
-		return NETDEV_TX_OK;
+		goto unlock;
 	}
 
 	/* Map socket buffer for DMA transfer */
@@ -1445,6 +1461,9 @@ static void gem_free_rx_buffers(struct macb *bp)
 
 		desc = &bp->rx_ring[i];
 		addr = MACB_BF(RX_WADDR, MACB_BFEXT(RX_WADDR, desc->addr));
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+		addr |= ((u64)(desc->addrh) << 32);
+#endif
 		dma_unmap_single(&bp->pdev->dev, addr, bp->rx_buffer_size,
 				 DMA_FROM_DEVICE);
 		dev_kfree_skb_any(skb);
@@ -1570,7 +1589,7 @@ static void gem_init_rings(struct macb *bp)
 
 	for (q = 0, queue = bp->queues; q < bp->num_queues; ++q, ++queue) {
 		for (i = 0; i < TX_RING_SIZE; i++) {
-			queue->tx_ring[i].addr = 0;
+			macb_set_addr(&(queue->tx_ring[i]), 0);
 			queue->tx_ring[i].ctrl = MACB_BIT(TX_USED);
 		}
 		queue->tx_ring[TX_RING_SIZE - 1].ctrl |= MACB_BIT(TX_WRAP);
@@ -1717,6 +1736,10 @@ static void macb_configure_dma(struct macb *bp)
 			dmacfg |= GEM_BIT(TXCOEN);
 		else
 			dmacfg &= ~GEM_BIT(TXCOEN);
+
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+		dmacfg |= GEM_BIT(ADDR64);
+#endif
 		netdev_dbg(bp->dev, "Cadence configure DMA with 0x%08x\n",
 			   dmacfg);
 		gem_writel(bp, DMACFG, dmacfg);
@@ -1762,9 +1785,15 @@ static void macb_init_hw(struct macb *bp)
 	macb_configure_dma(bp);
 
 	/* Initialize TX and RX buffers */
-	macb_writel(bp, RBQP, bp->rx_ring_dma);
+	macb_writel(bp, RBQP, (u32)(bp->rx_ring_dma));
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+	macb_writel(bp, RBQPH, (u32)(bp->rx_ring_dma >> 32));
+#endif
 	for (q = 0, queue = bp->queues; q < bp->num_queues; ++q, ++queue) {
-		queue_writel(queue, TBQP, queue->tx_ring_dma);
+		queue_writel(queue, TBQP, (u32)(queue->tx_ring_dma));
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+		queue_writel(queue, TBQPH, (u32)(queue->tx_ring_dma >> 32));
+#endif
 
 		/* Enable interrupts */
 		queue_writel(queue, IER,
@@ -2326,7 +2355,8 @@ static void macb_probe_queues(void __iomem *mem,
 }
 
 static int macb_clk_init(struct platform_device *pdev, struct clk **pclk,
-			 struct clk **hclk, struct clk **tx_clk)
+			 struct clk **hclk, struct clk **tx_clk,
+			 struct clk **rx_clk)
 {
 	int err;
 
@@ -2348,6 +2378,10 @@ static int macb_clk_init(struct platform_device *pdev, struct clk **pclk,
 	if (IS_ERR(*tx_clk))
 		*tx_clk = NULL;
 
+	*rx_clk = devm_clk_get(&pdev->dev, "rx_clk");
+	if (IS_ERR(*rx_clk))
+		*rx_clk = NULL;
+
 	err = clk_prepare_enable(*pclk);
 	if (err) {
 		dev_err(&pdev->dev, "failed to enable pclk (%u)\n", err);
@@ -2366,8 +2400,17 @@ static int macb_clk_init(struct platform_device *pdev, struct clk **pclk,
 		goto err_disable_hclk;
 	}
 
+	err = clk_prepare_enable(*rx_clk);
+	if (err) {
+		dev_err(&pdev->dev, "failed to enable rx_clk (%u)\n", err);
+		goto err_disable_txclk;
+	}
+
 	return 0;
 
+err_disable_txclk:
+	clk_disable_unprepare(*tx_clk);
+
 err_disable_hclk:
 	clk_disable_unprepare(*hclk);
 
@@ -2402,6 +2445,9 @@ static int macb_init(struct platform_device *pdev)
 			queue->IDR  = GEM_IDR(hw_q - 1);
 			queue->IMR  = GEM_IMR(hw_q - 1);
 			queue->TBQP = GEM_TBQP(hw_q - 1);
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+			queue->TBQPH = GEM_TBQPH(hw_q -1);
+#endif
 		} else {
 			/* queue0 uses legacy registers */
 			queue->ISR  = MACB_ISR;
@@ -2409,6 +2455,9 @@ static int macb_init(struct platform_device *pdev)
 			queue->IDR  = MACB_IDR;
 			queue->IMR  = MACB_IMR;
 			queue->TBQP = MACB_TBQP;
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+			queue->TBQPH = MACB_TBQPH;
+#endif
 		}
 
 		/* get irq: here we use the linux queue index, not the hardware
@@ -2751,12 +2800,14 @@ static const struct net_device_ops at91ether_netdev_ops = {
 };
 
 static int at91ether_clk_init(struct platform_device *pdev, struct clk **pclk,
-			      struct clk **hclk, struct clk **tx_clk)
+			      struct clk **hclk, struct clk **tx_clk,
+			      struct clk **rx_clk)
 {
 	int err;
 
 	*hclk = NULL;
 	*tx_clk = NULL;
+	*rx_clk = NULL;
 
 	*pclk = devm_clk_get(&pdev->dev, "ether_clk");
 	if (IS_ERR(*pclk))
@@ -2880,13 +2931,13 @@ MODULE_DEVICE_TABLE(of, macb_dt_ids);
 static int macb_probe(struct platform_device *pdev)
 {
 	int (*clk_init)(struct platform_device *, struct clk **,
-			struct clk **, struct clk **)
+			struct clk **, struct clk **,  struct clk **)
 					      = macb_clk_init;
 	int (*init)(struct platform_device *) = macb_init;
 	struct device_node *np = pdev->dev.of_node;
 	struct device_node *phy_node;
 	const struct macb_config *macb_config = NULL;
-	struct clk *pclk, *hclk = NULL, *tx_clk = NULL;
+	struct clk *pclk, *hclk = NULL, *tx_clk = NULL, *rx_clk = NULL;
 	unsigned int queue_mask, num_queues;
 	struct macb_platform_data *pdata;
 	bool native_io;
@@ -2914,7 +2965,7 @@ static int macb_probe(struct platform_device *pdev)
 		}
 	}
 
-	err = clk_init(pdev, &pclk, &hclk, &tx_clk);
+	err = clk_init(pdev, &pclk, &hclk, &tx_clk, &rx_clk);
 	if (err)
 		return err;
 
@@ -2950,6 +3001,7 @@ static int macb_probe(struct platform_device *pdev)
 	bp->pclk = pclk;
 	bp->hclk = hclk;
 	bp->tx_clk = tx_clk;
+	bp->rx_clk = rx_clk;
 	if (macb_config)
 		bp->jumbo_max_len = macb_config->jumbo_max_len;
 
@@ -2958,6 +3010,11 @@ static int macb_probe(struct platform_device *pdev)
 		bp->wol |= MACB_WOL_HAS_MAGIC_PACKET;
 	device_init_wakeup(&pdev->dev, bp->wol & MACB_WOL_HAS_MAGIC_PACKET);
 
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+	if (GEM_BFEXT(DBWDEF, gem_readl(bp, DCFG1)) > GEM_DBW32)
+		dma_set_mask(&pdev->dev, DMA_BIT_MASK(44));
+#endif
+
 	spin_lock_init(&bp->lock);
 
 	/* setup capabilities */
@@ -2968,7 +3025,7 @@ static int macb_probe(struct platform_device *pdev)
 	dev->irq = platform_get_irq(pdev, 0);
 	if (dev->irq < 0) {
 		err = dev->irq;
-		goto err_disable_clocks;
+		goto err_out_free_netdev;
 	}
 
 	mac = of_get_mac_address(np);
@@ -3043,6 +3100,7 @@ err_disable_clocks:
 	clk_disable_unprepare(tx_clk);
 	clk_disable_unprepare(hclk);
 	clk_disable_unprepare(pclk);
+	clk_disable_unprepare(rx_clk);
 
 	return err;
 }
@@ -3069,6 +3127,7 @@ static int macb_remove(struct platform_device *pdev)
 		clk_disable_unprepare(bp->tx_clk);
 		clk_disable_unprepare(bp->hclk);
 		clk_disable_unprepare(bp->pclk);
+		clk_disable_unprepare(bp->rx_clk);
 		free_netdev(dev);
 	}
 
@@ -3092,6 +3151,7 @@ static int __maybe_unused macb_suspend(struct device *dev)
 		clk_disable_unprepare(bp->tx_clk);
 		clk_disable_unprepare(bp->hclk);
 		clk_disable_unprepare(bp->pclk);
+		clk_disable_unprepare(bp->rx_clk);
 	}
 
 	return 0;
@@ -3111,6 +3171,7 @@ static int __maybe_unused macb_resume(struct device *dev)
 		clk_prepare_enable(bp->pclk);
 		clk_prepare_enable(bp->hclk);
 		clk_prepare_enable(bp->tx_clk);
+		clk_prepare_enable(bp->rx_clk);
 	}
 
 	netif_device_attach(netdev);
diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index b6fcf10621b6..8bed4b52fef5 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -66,6 +66,8 @@
 #define MACB_USRIO		0x00c0
 #define MACB_WOL		0x00c4
 #define MACB_MID		0x00fc
+#define MACB_TBQPH		0x04C8
+#define MACB_RBQPH		0x04D4
 
 /* GEM register offsets. */
 #define GEM_NCFGR		0x0004 /* Network Config */
@@ -139,6 +141,7 @@
 
 #define GEM_ISR(hw_q)		(0x0400 + ((hw_q) << 2))
 #define GEM_TBQP(hw_q)		(0x0440 + ((hw_q) << 2))
+#define GEM_TBQPH(hw_q)		(0x04C8)
 #define GEM_RBQP(hw_q)		(0x0480 + ((hw_q) << 2))
 #define GEM_IER(hw_q)		(0x0600 + ((hw_q) << 2))
 #define GEM_IDR(hw_q)		(0x0620 + ((hw_q) << 2))
@@ -249,6 +252,8 @@
 #define GEM_RXBS_SIZE		8
 #define GEM_DDRP_OFFSET		24 /* disc_when_no_ahb */
 #define GEM_DDRP_SIZE		1
+#define GEM_ADDR64_OFFSET	30 /* Address bus width - 64b or 32b */
+#define GEM_ADDR64_SIZE		1
 
 
 /* Bitfields in NSR */
@@ -474,6 +479,10 @@
 struct macb_dma_desc {
 	u32	addr;
 	u32	ctrl;
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+	u32     addrh;
+	u32     resvd;
+#endif
 };
 
 /* DMA descriptor bitfields */
@@ -763,7 +772,8 @@ struct macb_config {
 	u32			caps;
 	unsigned int		dma_burst_length;
 	int	(*clk_init)(struct platform_device *pdev, struct clk **pclk,
-			    struct clk **hclk, struct clk **tx_clk);
+			    struct clk **hclk, struct clk **tx_clk,
+			    struct clk **rx_clk);
 	int	(*init)(struct platform_device *pdev);
 	int	jumbo_max_len;
 };
@@ -777,6 +787,7 @@ struct macb_queue {
 	unsigned int		IDR;
 	unsigned int		IMR;
 	unsigned int		TBQP;
+	unsigned int		TBQPH;
 
 	unsigned int		tx_head, tx_tail;
 	struct macb_dma_desc	*tx_ring;
@@ -809,6 +820,7 @@ struct macb {
 	struct clk		*pclk;
 	struct clk		*hclk;
 	struct clk		*tx_clk;
+	struct clk		*rx_clk;
 	struct net_device	*dev;
 	struct napi_struct	napi;
 	struct net_device_stats	stats;