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

Pull networking changes from David Miller:
 "Noteworthy changes this time around:

   1) Multicast rejoin support for team driver, from Jiri Pirko.

   2) Centralize and simplify TCP RTT measurement handling in order to
      reduce the impact of bad RTO seeding from SYN/ACKs.  Also, when
      both timestamps and local RTT measurements are available prefer
      the later because there are broken middleware devices which
      scramble the timestamp.

      From Yuchung Cheng.

   3) Add TCP_NOTSENT_LOWAT socket option to limit the amount of kernel
      memory consumed to queue up unsend user data.  From Eric Dumazet.

   4) Add a "physical port ID" abstraction for network devices, from
      Jiri Pirko.

   5) Add a "suppress" operation to influence fib_rules lookups, from
      Stefan Tomanek.

   6) Add a networking development FAQ, from Paul Gortmaker.

   7) Extend the information provided by tcp_probe and add ipv6 support,
      from Daniel Borkmann.

   8) Use RCU locking more extensively in openvswitch data paths, from
      Pravin B Shelar.

   9) Add SCTP support to openvswitch, from Joe Stringer.

  10) Add EF10 chip support to SFC driver, from Ben Hutchings.

  11) Add new SYNPROXY netfilter target, from Patrick McHardy.

  12) Compute a rate approximation for sending in TCP sockets, and use
      this to more intelligently coalesce TSO frames.  Furthermore, add
      a new packet scheduler which takes advantage of this estimate when
      available.  From Eric Dumazet.

  13) Allow AF_PACKET fanouts with random selection, from Daniel
      Borkmann.

  14) Add ipv6 support to vxlan driver, from Cong Wang"

Resolved conflicts as per discussion.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1218 commits)
  openvswitch: Fix alignment of struct sw_flow_key.
  netfilter: Fix build errors with xt_socket.c
  tcp: Add missing braces to do_tcp_setsockopt
  caif: Add missing braces to multiline if in cfctrl_linkup_request
  bnx2x: Add missing braces in bnx2x:bnx2x_link_initialize
  vxlan: Fix kernel panic on device delete.
  net: mvneta: implement ->ndo_do_ioctl() to support PHY ioctls
  net: mvneta: properly disable HW PHY polling and ensure adjust_link() works
  icplus: Use netif_running to determine device state
  ethernet/arc/arc_emac: Fix huge delays in large file copies
  tuntap: orphan frags before trying to set tx timestamp
  tuntap: purge socket error queue on detach
  qlcnic: use standard NAPI weights
  ipv6:introduce function to find route for redirect
  bnx2x: VF RSS support - VF side
  bnx2x: VF RSS support - PF side
  vxlan: Notify drivers for listening UDP port changes
  net: usbnet: update addr_assign_type if appropriate
  driver/net: enic: update enic maintainers and driver
  driver/net: enic: Exposing symbols for Cisco's low latency driver
  ...

1 files changed, 103 insertions, 2 deletions

diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 2510435f34ed..c31aad0004cb 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -25,6 +25,7 @@
 #include <linux/module.h>
 #include <linux/phy.h>
 #include <linux/micrel_phy.h>
+#include <linux/of.h>
 
 /* Operation Mode Strap Override */
 #define MII_KSZPHY_OMSO				0x16
@@ -53,6 +54,20 @@
 #define KS8737_CTRL_INT_ACTIVE_HIGH		(1 << 14)
 #define KSZ8051_RMII_50MHZ_CLK			(1 << 7)
 
+/* Write/read to/from extended registers */
+#define MII_KSZPHY_EXTREG                       0x0b
+#define KSZPHY_EXTREG_WRITE                     0x8000
+
+#define MII_KSZPHY_EXTREG_WRITE                 0x0c
+#define MII_KSZPHY_EXTREG_READ                  0x0d
+
+/* Extended registers */
+#define MII_KSZPHY_CLK_CONTROL_PAD_SKEW         0x104
+#define MII_KSZPHY_RX_DATA_PAD_SKEW             0x105
+#define MII_KSZPHY_TX_DATA_PAD_SKEW             0x106
+
+#define PS_TO_REG				200
+
 static int ksz_config_flags(struct phy_device *phydev)
 {
 	int regval;
@@ -65,6 +80,20 @@ static int ksz_config_flags(struct phy_device *phydev)
 	return 0;
 }
 
+static int kszphy_extended_write(struct phy_device *phydev,
+                                 u32 regnum, u16 val)
+{
+	phy_write(phydev, MII_KSZPHY_EXTREG, KSZPHY_EXTREG_WRITE | regnum);
+	return phy_write(phydev, MII_KSZPHY_EXTREG_WRITE, val);
+}
+
+static int kszphy_extended_read(struct phy_device *phydev,
+                                 u32 regnum)
+{
+	phy_write(phydev, MII_KSZPHY_EXTREG, regnum);
+	return phy_read(phydev, MII_KSZPHY_EXTREG_READ);
+}
+
 static int kszphy_ack_interrupt(struct phy_device *phydev)
 {
 	/* bit[7..0] int status, which is a read and clear register. */
@@ -141,10 +170,82 @@ static int ks8051_config_init(struct phy_device *phydev)
 	return rc < 0 ? rc : 0;
 }
 
+static int ksz9021_load_values_from_of(struct phy_device *phydev,
+				       struct device_node *of_node, u16 reg,
+				       char *field1, char *field2,
+				       char *field3, char *field4)
+{
+	int val1 = -1;
+	int val2 = -2;
+	int val3 = -3;
+	int val4 = -4;
+	int newval;
+	int matches = 0;
+
+	if (!of_property_read_u32(of_node, field1, &val1))
+		matches++;
+
+	if (!of_property_read_u32(of_node, field2, &val2))
+		matches++;
+
+	if (!of_property_read_u32(of_node, field3, &val3))
+		matches++;
+
+	if (!of_property_read_u32(of_node, field4, &val4))
+		matches++;
+
+	if (!matches)
+		return 0;
+
+	if (matches < 4)
+		newval = kszphy_extended_read(phydev, reg);
+	else
+		newval = 0;
+
+	if (val1 != -1)
+		newval = ((newval & 0xfff0) | ((val1 / PS_TO_REG) & 0xf) << 0);
+
+	if (val2 != -1)
+		newval = ((newval & 0xff0f) | ((val2 / PS_TO_REG) & 0xf) << 4);
+
+	if (val3 != -1)
+		newval = ((newval & 0xf0ff) | ((val3 / PS_TO_REG) & 0xf) << 8);
+
+	if (val4 != -1)
+		newval = ((newval & 0x0fff) | ((val4 / PS_TO_REG) & 0xf) << 12);
+
+	return kszphy_extended_write(phydev, reg, newval);
+}
+
+static int ksz9021_config_init(struct phy_device *phydev)
+{
+	struct device *dev = &phydev->dev;
+	struct device_node *of_node = dev->of_node;
+
+	if (!of_node && dev->parent->of_node)
+		of_node = dev->parent->of_node;
+
+	if (of_node) {
+		ksz9021_load_values_from_of(phydev, of_node,
+				    MII_KSZPHY_CLK_CONTROL_PAD_SKEW,
+				    "txen-skew-ps", "txc-skew-ps",
+				    "rxdv-skew-ps", "rxc-skew-ps");
+		ksz9021_load_values_from_of(phydev, of_node,
+				    MII_KSZPHY_RX_DATA_PAD_SKEW,
+				    "rxd0-skew-ps", "rxd1-skew-ps",
+				    "rxd2-skew-ps", "rxd3-skew-ps");
+		ksz9021_load_values_from_of(phydev, of_node,
+				    MII_KSZPHY_TX_DATA_PAD_SKEW,
+				    "txd0-skew-ps", "txd1-skew-ps",
+				    "txd2-skew-ps", "txd3-skew-ps");
+	}
+	return 0;
+}
+
 #define KSZ8873MLL_GLOBAL_CONTROL_4	0x06
 #define KSZ8873MLL_GLOBAL_CONTROL_4_DUPLEX	(1 << 6)
 #define KSZ8873MLL_GLOBAL_CONTROL_4_SPEED	(1 << 4)
-int ksz8873mll_read_status(struct phy_device *phydev)
+static int ksz8873mll_read_status(struct phy_device *phydev)
 {
 	int regval;
 
@@ -281,7 +382,7 @@ static struct phy_driver ksphy_driver[] = {
 	.name		= "Micrel KSZ9021 Gigabit PHY",
 	.features	= (PHY_GBIT_FEATURES | SUPPORTED_Pause),
 	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
-	.config_init	= kszphy_config_init,
+	.config_init	= ksz9021_config_init,
 	.config_aneg	= genphy_config_aneg,
 	.read_status	= genphy_read_status,
 	.ack_interrupt	= kszphy_ack_interrupt,