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

Pull networking updates from David Miller:
 "Highlights:

   1) Steady transitioning of the BPF instructure to a generic spot so
      all kernel subsystems can make use of it, from Alexei Starovoitov.

   2) SFC driver supports busy polling, from Alexandre Rames.

   3) Take advantage of hash table in UDP multicast delivery, from David
      Held.

   4) Lighten locking, in particular by getting rid of the LRU lists, in
      inet frag handling.  From Florian Westphal.

   5) Add support for various RFC6458 control messages in SCTP, from
      Geir Ola Vaagland.

   6) Allow to filter bridge forwarding database dumps by device, from
      Jamal Hadi Salim.

   7) virtio-net also now supports busy polling, from Jason Wang.

   8) Some low level optimization tweaks in pktgen from Jesper Dangaard
      Brouer.

   9) Add support for ipv6 address generation modes, so that userland
      can have some input into the process.  From Jiri Pirko.

  10) Consolidate common TCP connection request code in ipv4 and ipv6,
      from Octavian Purdila.

  11) New ARP packet logger in netfilter, from Pablo Neira Ayuso.

  12) Generic resizable RCU hash table, with intial users in netlink and
      nftables.  From Thomas Graf.

  13) Maintain a name assignment type so that userspace can see where a
      network device name came from (enumerated by kernel, assigned
      explicitly by userspace, etc.) From Tom Gundersen.

  14) Automatic flow label generation on transmit in ipv6, from Tom
      Herbert.

  15) New packet timestamping facilities from Willem de Bruijn, meant to
      assist in measuring latencies going into/out-of the packet
      scheduler, latency from TCP data transmission to ACK, etc"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1536 commits)
  cxgb4 : Disable recursive mailbox commands when enabling vi
  net: reduce USB network driver config options.
  tg3: Modify tg3_tso_bug() to handle multiple TX rings
  amd-xgbe: Perform phy connect/disconnect at dev open/stop
  amd-xgbe: Use dma_set_mask_and_coherent to set DMA mask
  net: sun4i-emac: fix memory leak on bad packet
  sctp: fix possible seqlock seadlock in sctp_packet_transmit()
  Revert "net: phy: Set the driver when registering an MDIO bus device"
  cxgb4vf: Turn off SGE RX/TX Callback Timers and interrupts in PCI shutdown routine
  team: Simplify return path of team_newlink
  bridge: Update outdated comment on promiscuous mode
  net-timestamp: ACK timestamp for bytestreams
  net-timestamp: TCP timestamping
  net-timestamp: SCHED timestamp on entering packet scheduler
  net-timestamp: add key to disambiguate concurrent datagrams
  net-timestamp: move timestamp flags out of sk_flags
  net-timestamp: extend SCM_TIMESTAMPING ancillary data struct
  cxgb4i : Move stray CPL definitions to cxgb4 driver
  tcp: reduce spurious retransmits due to transient SACK reneging
  qlcnic: Initialize dcbnl_ops before register_netdev
  ...

1 files changed, 206 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c b/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c
new file mode 100644
index 000000000000..b82b7e4e06b2
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c
@@ -0,0 +1,206 @@
+/*
+ * Broadcom GENET (Gigabit Ethernet) Wake-on-LAN support
+ *
+ * Copyright (c) 2014 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define pr_fmt(fmt)				"bcmgenet_wol: " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/clk.h>
+#include <linux/version.h>
+#include <linux/platform_device.h>
+#include <net/arp.h>
+
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/phy.h>
+
+#include "bcmgenet.h"
+
+/* ethtool function - get WOL (Wake on LAN) settings, Only Magic Packet
+ * Detection is supported through ethtool
+ */
+void bcmgenet_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	u32 reg;
+
+	wol->supported = WAKE_MAGIC | WAKE_MAGICSECURE;
+	wol->wolopts = priv->wolopts;
+	memset(wol->sopass, 0, sizeof(wol->sopass));
+
+	if (wol->wolopts & WAKE_MAGICSECURE) {
+		reg = bcmgenet_umac_readl(priv, UMAC_MPD_PW_MS);
+		put_unaligned_be16(reg, &wol->sopass[0]);
+		reg = bcmgenet_umac_readl(priv, UMAC_MPD_PW_LS);
+		put_unaligned_be32(reg, &wol->sopass[2]);
+	}
+}
+
+/* ethtool function - set WOL (Wake on LAN) settings.
+ * Only for magic packet detection mode.
+ */
+int bcmgenet_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct device *kdev = &priv->pdev->dev;
+	u32 reg;
+
+	if (!device_can_wakeup(kdev))
+		return -ENOTSUPP;
+
+	if (wol->wolopts & ~(WAKE_MAGIC | WAKE_MAGICSECURE))
+		return -EINVAL;
+
+	if (wol->wolopts & WAKE_MAGICSECURE) {
+		bcmgenet_umac_writel(priv, get_unaligned_be16(&wol->sopass[0]),
+				     UMAC_MPD_PW_MS);
+		bcmgenet_umac_writel(priv, get_unaligned_be32(&wol->sopass[2]),
+				     UMAC_MPD_PW_LS);
+		reg = bcmgenet_umac_readl(priv, UMAC_MPD_CTRL);
+		reg |= MPD_PW_EN;
+		bcmgenet_umac_writel(priv, reg, UMAC_MPD_CTRL);
+	}
+
+	/* Flag the device and relevant IRQ as wakeup capable */
+	if (wol->wolopts) {
+		device_set_wakeup_enable(kdev, 1);
+		enable_irq_wake(priv->wol_irq);
+		priv->wol_irq_disabled = false;
+	} else {
+		device_set_wakeup_enable(kdev, 0);
+		/* Avoid unbalanced disable_irq_wake calls */
+		if (!priv->wol_irq_disabled)
+			disable_irq_wake(priv->wol_irq);
+		priv->wol_irq_disabled = true;
+	}
+
+	priv->wolopts = wol->wolopts;
+
+	return 0;
+}
+
+static int bcmgenet_poll_wol_status(struct bcmgenet_priv *priv)
+{
+	struct net_device *dev = priv->dev;
+	int retries = 0;
+
+	while (!(bcmgenet_rbuf_readl(priv, RBUF_STATUS)
+		& RBUF_STATUS_WOL)) {
+		retries++;
+		if (retries > 5) {
+			netdev_crit(dev, "polling wol mode timeout\n");
+			return -ETIMEDOUT;
+		}
+		mdelay(1);
+	}
+
+	return retries;
+}
+
+int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv,
+				enum bcmgenet_power_mode mode)
+{
+	struct net_device *dev = priv->dev;
+	u32 cpu_mask_clear;
+	int retries = 0;
+	u32 reg;
+
+	if (mode != GENET_POWER_WOL_MAGIC) {
+		netif_err(priv, wol, dev, "unsupported mode: %d\n", mode);
+		return -EINVAL;
+	}
+
+	/* disable RX */
+	reg = bcmgenet_umac_readl(priv, UMAC_CMD);
+	reg &= ~CMD_RX_EN;
+	bcmgenet_umac_writel(priv, reg, UMAC_CMD);
+	mdelay(10);
+
+	reg = bcmgenet_umac_readl(priv, UMAC_MPD_CTRL);
+	reg |= MPD_EN;
+	bcmgenet_umac_writel(priv, reg, UMAC_MPD_CTRL);
+
+	/* Do not leave UniMAC in MPD mode only */
+	retries = bcmgenet_poll_wol_status(priv);
+	if (retries < 0) {
+		reg = bcmgenet_umac_readl(priv, UMAC_MPD_CTRL);
+		reg &= ~MPD_EN;
+		bcmgenet_umac_writel(priv, reg, UMAC_MPD_CTRL);
+		return retries;
+	}
+
+	netif_dbg(priv, wol, dev, "MPD WOL-ready status set after %d msec\n",
+		  retries);
+
+	/* Enable CRC forward */
+	reg = bcmgenet_umac_readl(priv, UMAC_CMD);
+	priv->crc_fwd_en = 1;
+	reg |= CMD_CRC_FWD;
+
+	/* Receiver must be enabled for WOL MP detection */
+	reg |= CMD_RX_EN;
+	bcmgenet_umac_writel(priv, reg, UMAC_CMD);
+
+	if (priv->hw_params->flags & GENET_HAS_EXT) {
+		reg = bcmgenet_ext_readl(priv, EXT_EXT_PWR_MGMT);
+		reg &= ~EXT_ENERGY_DET_MASK;
+		bcmgenet_ext_writel(priv, reg, EXT_EXT_PWR_MGMT);
+	}
+
+	/* Enable the MPD interrupt */
+	cpu_mask_clear = UMAC_IRQ_MPD_R;
+
+	bcmgenet_intrl2_0_writel(priv, cpu_mask_clear, INTRL2_CPU_MASK_CLEAR);
+
+	return 0;
+}
+
+void bcmgenet_wol_power_up_cfg(struct bcmgenet_priv *priv,
+			       enum bcmgenet_power_mode mode)
+{
+	u32 cpu_mask_set;
+	u32 reg;
+
+	if (mode != GENET_POWER_WOL_MAGIC) {
+		netif_err(priv, wol, priv->dev, "invalid mode: %d\n", mode);
+		return;
+	}
+
+	reg = bcmgenet_umac_readl(priv, UMAC_MPD_CTRL);
+	reg &= ~MPD_EN;
+	bcmgenet_umac_writel(priv, reg, UMAC_MPD_CTRL);
+
+	/* Disable CRC Forward */
+	reg = bcmgenet_umac_readl(priv, UMAC_CMD);
+	reg &= ~CMD_CRC_FWD;
+	bcmgenet_umac_writel(priv, reg, UMAC_CMD);
+	priv->crc_fwd_en = 0;
+
+	/* Stop monitoring magic packet IRQ */
+	cpu_mask_set = UMAC_IRQ_MPD_R;
+
+	/* Stop monitoring magic packet IRQ */
+	bcmgenet_intrl2_0_writel(priv, cpu_mask_set, INTRL2_CPU_MASK_SET);
+}