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
  ...

3 files changed, 130 insertions, 5 deletions

diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index 0525bd696d5d..96a27b00c90e 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -991,6 +991,7 @@ struct ravb_private {
 	struct net_device *ndev;
 	struct platform_device *pdev;
 	void __iomem *addr;
+	struct clk *clk;
 	struct mdiobb_ctrl mdiobb;
 	u32 num_rx_ring[NUM_RX_QUEUE];
 	u32 num_tx_ring[NUM_TX_QUEUE];
@@ -1033,6 +1034,7 @@ struct ravb_private {
 
 	unsigned no_avb_link:1;
 	unsigned avb_link_active_low:1;
+	unsigned wol_enabled:1;
 };
 
 static inline u32 ravb_read(struct net_device *ndev, enum ravb_reg reg)
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 5931e859876c..fdf30bfa403b 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -680,6 +680,9 @@ static void ravb_emac_interrupt_unlocked(struct net_device *ndev)
 
 	ecsr = ravb_read(ndev, ECSR);
 	ravb_write(ndev, ecsr, ECSR);	/* clear interrupt */
+
+	if (ecsr & ECSR_MPD)
+		pm_wakeup_event(&priv->pdev->dev, 0);
 	if (ecsr & ECSR_ICD)
 		ndev->stats.tx_carrier_errors++;
 	if (ecsr & ECSR_LCHNG) {
@@ -1330,6 +1333,33 @@ static int ravb_get_ts_info(struct net_device *ndev,
 	return 0;
 }
 
+static void ravb_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+
+	wol->supported = 0;
+	wol->wolopts = 0;
+
+	if (priv->clk) {
+		wol->supported = WAKE_MAGIC;
+		wol->wolopts = priv->wol_enabled ? WAKE_MAGIC : 0;
+	}
+}
+
+static int ravb_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+
+	if (!priv->clk || wol->wolopts & ~WAKE_MAGIC)
+		return -EOPNOTSUPP;
+
+	priv->wol_enabled = !!(wol->wolopts & WAKE_MAGIC);
+
+	device_set_wakeup_enable(&priv->pdev->dev, priv->wol_enabled);
+
+	return 0;
+}
+
 static const struct ethtool_ops ravb_ethtool_ops = {
 	.nway_reset		= ravb_nway_reset,
 	.get_msglevel		= ravb_get_msglevel,
@@ -1343,6 +1373,8 @@ static const struct ethtool_ops ravb_ethtool_ops = {
 	.get_ts_info		= ravb_get_ts_info,
 	.get_link_ksettings	= ravb_get_link_ksettings,
 	.set_link_ksettings	= ravb_set_link_ksettings,
+	.get_wol		= ravb_get_wol,
+	.set_wol		= ravb_set_wol,
 };
 
 static inline int ravb_hook_irq(unsigned int irq, irq_handler_t handler,
@@ -2041,6 +2073,11 @@ static int ravb_probe(struct platform_device *pdev)
 
 	priv->chip_id = chip_id;
 
+	/* Get clock, if not found that's OK but Wake-On-Lan is unavailable */
+	priv->clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(priv->clk))
+		priv->clk = NULL;
+
 	/* Set function */
 	ndev->netdev_ops = &ravb_netdev_ops;
 	ndev->ethtool_ops = &ravb_ethtool_ops;
@@ -2107,6 +2144,9 @@ static int ravb_probe(struct platform_device *pdev)
 	if (error)
 		goto out_napi_del;
 
+	if (priv->clk)
+		device_set_wakeup_capable(&pdev->dev, 1);
+
 	/* Print device information */
 	netdev_info(ndev, "Base address at %#x, %pM, IRQ %d.\n",
 		    (u32)ndev->base_addr, ndev->dev_addr, ndev->irq);
@@ -2160,15 +2200,66 @@ static int ravb_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static int ravb_wol_setup(struct net_device *ndev)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+
+	/* Disable interrupts by clearing the interrupt masks. */
+	ravb_write(ndev, 0, RIC0);
+	ravb_write(ndev, 0, RIC2);
+	ravb_write(ndev, 0, TIC);
+
+	/* Only allow ECI interrupts */
+	synchronize_irq(priv->emac_irq);
+	napi_disable(&priv->napi[RAVB_NC]);
+	napi_disable(&priv->napi[RAVB_BE]);
+	ravb_write(ndev, ECSIPR_MPDIP, ECSIPR);
+
+	/* Enable MagicPacket */
+	ravb_modify(ndev, ECMR, ECMR_MPDE, ECMR_MPDE);
+
+	/* Increased clock usage so device won't be suspended */
+	clk_enable(priv->clk);
+
+	return enable_irq_wake(priv->emac_irq);
+}
+
+static int ravb_wol_restore(struct net_device *ndev)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+	int ret;
+
+	napi_enable(&priv->napi[RAVB_NC]);
+	napi_enable(&priv->napi[RAVB_BE]);
+
+	/* Disable MagicPacket */
+	ravb_modify(ndev, ECMR, ECMR_MPDE, 0);
+
+	ret = ravb_close(ndev);
+	if (ret < 0)
+		return ret;
+
+	/* Restore clock usage count */
+	clk_disable(priv->clk);
+
+	return disable_irq_wake(priv->emac_irq);
+}
+
 static int __maybe_unused ravb_suspend(struct device *dev)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
-	int ret = 0;
+	struct ravb_private *priv = netdev_priv(ndev);
+	int ret;
 
-	if (netif_running(ndev)) {
-		netif_device_detach(ndev);
+	if (!netif_running(ndev))
+		return 0;
+
+	netif_device_detach(ndev);
+
+	if (priv->wol_enabled)
+		ret = ravb_wol_setup(ndev);
+	else
 		ret = ravb_close(ndev);
-	}
 
 	return ret;
 }
@@ -2179,6 +2270,33 @@ static int __maybe_unused ravb_resume(struct device *dev)
 	struct ravb_private *priv = netdev_priv(ndev);
 	int ret = 0;
 
+	if (priv->wol_enabled) {
+		/* Reduce the usecount of the clock to zero and then
+		 * restore it to its original value. This is done to force
+		 * the clock to be re-enabled which is a workaround
+		 * for renesas-cpg-mssr driver which do not enable clocks
+		 * when resuming from PSCI suspend/resume.
+		 *
+		 * Without this workaround the driver fails to communicate
+		 * with the hardware if WoL was enabled when the system
+		 * entered PSCI suspend. This is due to that if WoL is enabled
+		 * we explicitly keep the clock from being turned off when
+		 * suspending, but in PSCI sleep power is cut so the clock
+		 * is disabled anyhow, the clock driver is not aware of this
+		 * so the clock is not turned back on when resuming.
+		 *
+		 * TODO: once the renesas-cpg-mssr suspend/resume is working
+		 *       this clock dance should be removed.
+		 */
+		clk_disable(priv->clk);
+		clk_disable(priv->clk);
+		clk_enable(priv->clk);
+		clk_enable(priv->clk);
+
+		/* Set reset mode to rearm the WoL logic */
+		ravb_write(ndev, CCC_OPC_RESET, CCC);
+	}
+
 	/* All register have been reset to default values.
 	 * Restore all registers which where setup at probe time and
 	 * reopen device if it was running before system suspended.
@@ -2202,6 +2320,11 @@ static int __maybe_unused ravb_resume(struct device *dev)
 	ravb_write(ndev, priv->desc_bat_dma, DBAT);
 
 	if (netif_running(ndev)) {
+		if (priv->wol_enabled) {
+			ret = ravb_wol_restore(ndev);
+			if (ret)
+				return ret;
+		}
 		ret = ravb_open(ndev);
 		if (ret < 0)
 			return ret;
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index d2dc0a8ef305..d2e88a30f57b 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -3402,7 +3402,7 @@ static const struct dev_pm_ops sh_eth_dev_pm_ops = {
 #define SH_ETH_PM_OPS NULL
 #endif
 
-static struct platform_device_id sh_eth_id_table[] = {
+static const struct platform_device_id sh_eth_id_table[] = {
 	{ "sh7619-ether", (kernel_ulong_t)&sh7619_data },
 	{ "sh771x-ether", (kernel_ulong_t)&sh771x_data },
 	{ "sh7724-ether", (kernel_ulong_t)&sh7724_data },