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

Pull networking changes from David S Miller:

 1) Remove the ipv4 routing cache.  Now lookups go directly into the FIB
    trie and use prebuilt routes cached there.

    No more garbage collection, no more rDOS attacks on the routing
    cache.  Instead we now get predictable and consistent performance,
    no matter what the pattern of traffic we service.

    This has been almost 2 years in the making.  Special thanks to
    Julian Anastasov, Eric Dumazet, Steffen Klassert, and others who
    have helped along the way.

    I'm sure that with a change of this magnitude there will be some
    kind of fallout, but such things ought the be simple to fix at this
    point.  Luckily I'm not European so I'll be around all of August to
    fix things :-)

    The major stages of this work here are each fronted by a forced
    merge commit whose commit message contains a top-level description
    of the motivations and implementation issues.

 2) Pre-demux of established ipv4 TCP sockets, saves a route demux on
    input.

 3) TCP SYN/ACK performance tweaks from Eric Dumazet.

 4) Add namespace support for netfilter L4 conntrack helpers, from Gao
    Feng.

 5) Add config mechanism for Energy Efficient Ethernet to ethtool, from
    Yuval Mintz.

 6) Remove quadratic behavior from /proc/net/unix, from Eric Dumazet.

 7) Support for connection tracker helpers in userspace, from Pablo
    Neira Ayuso.

 8) Allow userspace driven TX load balancing functions in TEAM driver,
    from Jiri Pirko.

 9) Kill off NLMSG_PUT and RTA_PUT macros, more gross stuff with
    embedded gotos.

10) TCP Small Queues, essentially minimize the amount of TCP data queued
    up in the packet scheduler layer.  Whereas the existing BQL (Byte
    Queue Limits) limits the pkt_sched --> netdevice queuing levels,
    this controls the TCP --> pkt_sched queueing levels.

    From Eric Dumazet.

11) Reduce the number of get_page/put_page ops done on SKB fragments,
    from Alexander Duyck.

12) Implement protection against blind resets in TCP (RFC 5961), from
    Eric Dumazet.

13) Support the client side of TCP Fast Open, basically the ability to
    send data in the SYN exchange, from Yuchung Cheng.

    Basically, the sender queues up data with a sendmsg() call using
    MSG_FASTOPEN, then they do the connect() which emits the queued up
    fastopen data.

14) Avoid all the problems we get into in TCP when timers or PMTU events
    hit a locked socket.  The TCP Small Queues changes added a
    tcp_release_cb() that allows us to queue work up to the
    release_sock() caller, and that's what we use here too.  From Eric
    Dumazet.

15) Zero copy on TX support for TUN driver, from Michael S. Tsirkin.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1870 commits)
  genetlink: define lockdep_genl_is_held() when CONFIG_LOCKDEP
  r8169: revert "add byte queue limit support".
  ipv4: Change rt->rt_iif encoding.
  net: Make skb->skb_iif always track skb->dev
  ipv4: Prepare for change of rt->rt_iif encoding.
  ipv4: Remove all RTCF_DIRECTSRC handliing.
  ipv4: Really ignore ICMP address requests/replies.
  decnet: Don't set RTCF_DIRECTSRC.
  net/ipv4/ip_vti.c: Fix __rcu warnings detected by sparse.
  ipv4: Remove redundant assignment
  rds: set correct msg_namelen
  openvswitch: potential NULL deref in sample()
  tcp: dont drop MTU reduction indications
  bnx2x: Add new 57840 device IDs
  tcp: avoid oops in tcp_metrics and reset tcpm_stamp
  niu: Change niu_rbr_fill() to use unlikely() to check niu_rbr_add_page() return value
  niu: Fix to check for dma mapping errors.
  net: Fix references to out-of-scope variables in put_cmsg_compat()
  net: ethernet: davinci_emac: add pm_runtime support
  net: ethernet: davinci_emac: Remove unnecessary #include
  ...

1 files changed, 128 insertions, 11 deletions

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index de86a5582224..8af46e88a181 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -14,6 +14,9 @@
  * option) any later version.
  *
  */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/errno.h>
@@ -149,8 +152,8 @@ int phy_scan_fixups(struct phy_device *phydev)
 }
 EXPORT_SYMBOL(phy_scan_fixups);
 
-static struct phy_device* phy_device_create(struct mii_bus *bus,
-					    int addr, int phy_id)
+struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
+			bool is_c45, struct phy_c45_device_ids *c45_ids)
 {
 	struct phy_device *dev;
 
@@ -171,8 +174,11 @@ static struct phy_device* phy_device_create(struct mii_bus *bus,
 
 	dev->autoneg = AUTONEG_ENABLE;
 
+	dev->is_c45 = is_c45;
 	dev->addr = addr;
 	dev->phy_id = phy_id;
+	if (c45_ids)
+		dev->c45_ids = *c45_ids;
 	dev->bus = bus;
 	dev->dev.parent = bus->parent;
 	dev->dev.bus = &mdio_bus_type;
@@ -197,20 +203,99 @@ static struct phy_device* phy_device_create(struct mii_bus *bus,
 
 	return dev;
 }
+EXPORT_SYMBOL(phy_device_create);
+
+/**
+ * get_phy_c45_ids - reads the specified addr for its 802.3-c45 IDs.
+ * @bus: the target MII bus
+ * @addr: PHY address on the MII bus
+ * @phy_id: where to store the ID retrieved.
+ * @c45_ids: where to store the c45 ID information.
+ *
+ *   If the PHY devices-in-package appears to be valid, it and the
+ *   corresponding identifiers are stored in @c45_ids, zero is stored
+ *   in @phy_id.  Otherwise 0xffffffff is stored in @phy_id.  Returns
+ *   zero on success.
+ *
+ */
+static int get_phy_c45_ids(struct mii_bus *bus, int addr, u32 *phy_id,
+			   struct phy_c45_device_ids *c45_ids) {
+	int phy_reg;
+	int i, reg_addr;
+	const int num_ids = ARRAY_SIZE(c45_ids->device_ids);
+
+	/* Find first non-zero Devices In package.  Device
+	 * zero is reserved, so don't probe it.
+	 */
+	for (i = 1;
+	     i < num_ids && c45_ids->devices_in_package == 0;
+	     i++) {
+		reg_addr = MII_ADDR_C45 | i << 16 | 6;
+		phy_reg = mdiobus_read(bus, addr, reg_addr);
+		if (phy_reg < 0)
+			return -EIO;
+		c45_ids->devices_in_package = (phy_reg & 0xffff) << 16;
+
+		reg_addr = MII_ADDR_C45 | i << 16 | 5;
+		phy_reg = mdiobus_read(bus, addr, reg_addr);
+		if (phy_reg < 0)
+			return -EIO;
+		c45_ids->devices_in_package |= (phy_reg & 0xffff);
+
+		/* If mostly Fs, there is no device there,
+		 * let's get out of here.
+		 */
+		if ((c45_ids->devices_in_package & 0x1fffffff) == 0x1fffffff) {
+			*phy_id = 0xffffffff;
+			return 0;
+		}
+	}
+
+	/* Now probe Device Identifiers for each device present. */
+	for (i = 1; i < num_ids; i++) {
+		if (!(c45_ids->devices_in_package & (1 << i)))
+			continue;
+
+		reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID1;
+		phy_reg = mdiobus_read(bus, addr, reg_addr);
+		if (phy_reg < 0)
+			return -EIO;
+		c45_ids->device_ids[i] = (phy_reg & 0xffff) << 16;
+
+		reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID2;
+		phy_reg = mdiobus_read(bus, addr, reg_addr);
+		if (phy_reg < 0)
+			return -EIO;
+		c45_ids->device_ids[i] |= (phy_reg & 0xffff);
+	}
+	*phy_id = 0;
+	return 0;
+}
 
 /**
  * get_phy_id - reads the specified addr for its ID.
  * @bus: the target MII bus
  * @addr: PHY address on the MII bus
  * @phy_id: where to store the ID retrieved.
+ * @is_c45: If true the PHY uses the 802.3 clause 45 protocol
+ * @c45_ids: where to store the c45 ID information.
+ *
+ * Description: In the case of a 802.3-c22 PHY, reads the ID registers
+ *   of the PHY at @addr on the @bus, stores it in @phy_id and returns
+ *   zero on success.
+ *
+ *   In the case of a 802.3-c45 PHY, get_phy_c45_ids() is invoked, and
+ *   its return value is in turn returned.
  *
- * Description: Reads the ID registers of the PHY at @addr on the
- *   @bus, stores it in @phy_id and returns zero on success.
  */
-static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id)
+static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id,
+		      bool is_c45, struct phy_c45_device_ids *c45_ids)
 {
 	int phy_reg;
 
+	if (is_c45)
+		return get_phy_c45_ids(bus, addr, phy_id, c45_ids);
+
 	/* Grab the bits from PHYIR1, and put them
 	 * in the upper half */
 	phy_reg = mdiobus_read(bus, addr, MII_PHYSID1);
@@ -235,17 +320,19 @@ static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id)
  * get_phy_device - reads the specified PHY device and returns its @phy_device struct
  * @bus: the target MII bus
  * @addr: PHY address on the MII bus
+ * @is_c45: If true the PHY uses the 802.3 clause 45 protocol
  *
  * Description: Reads the ID registers of the PHY at @addr on the
  *   @bus, then allocates and returns the phy_device to represent it.
  */
-struct phy_device * get_phy_device(struct mii_bus *bus, int addr)
+struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
 {
+	struct phy_c45_device_ids c45_ids = {0};
 	struct phy_device *dev = NULL;
-	u32 phy_id;
+	u32 phy_id = 0;
 	int r;
 
-	r = get_phy_id(bus, addr, &phy_id);
+	r = get_phy_id(bus, addr, &phy_id, is_c45, &c45_ids);
 	if (r)
 		return ERR_PTR(r);
 
@@ -253,7 +340,7 @@ struct phy_device * get_phy_device(struct mii_bus *bus, int addr)
 	if ((phy_id & 0x1fffffff) == 0x1fffffff)
 		return NULL;
 
-	dev = phy_device_create(bus, addr, phy_id);
+	dev = phy_device_create(bus, addr, phy_id, is_c45, &c45_ids);
 
 	return dev;
 }
@@ -446,6 +533,11 @@ static int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
 	/* Assume that if there is no driver, that it doesn't
 	 * exist, and we should use the genphy driver. */
 	if (NULL == d->driver) {
+		if (phydev->is_c45) {
+			pr_err("No driver for phy %x\n", phydev->phy_id);
+			return -ENODEV;
+		}
+
 		d->driver = &genphy_driver.driver;
 
 		err = d->driver->probe(d);
@@ -975,8 +1067,8 @@ int phy_driver_register(struct phy_driver *new_driver)
 	retval = driver_register(&new_driver->driver);
 
 	if (retval) {
-		printk(KERN_ERR "%s: Error %d in registering driver\n",
-				new_driver->name, retval);
+		pr_err("%s: Error %d in registering driver\n",
+		       new_driver->name, retval);
 
 		return retval;
 	}
@@ -987,12 +1079,37 @@ int phy_driver_register(struct phy_driver *new_driver)
 }
 EXPORT_SYMBOL(phy_driver_register);
 
+int phy_drivers_register(struct phy_driver *new_driver, int n)
+{
+	int i, ret = 0;
+
+	for (i = 0; i < n; i++) {
+		ret = phy_driver_register(new_driver + i);
+		if (ret) {
+			while (i-- > 0)
+				phy_driver_unregister(new_driver + i);
+			break;
+		}
+	}
+	return ret;
+}
+EXPORT_SYMBOL(phy_drivers_register);
+
 void phy_driver_unregister(struct phy_driver *drv)
 {
 	driver_unregister(&drv->driver);
 }
 EXPORT_SYMBOL(phy_driver_unregister);
 
+void phy_drivers_unregister(struct phy_driver *drv, int n)
+{
+	int i;
+	for (i = 0; i < n; i++) {
+		phy_driver_unregister(drv + i);
+	}
+}
+EXPORT_SYMBOL(phy_drivers_unregister);
+
 static struct phy_driver genphy_driver = {
 	.phy_id		= 0xffffffff,
 	.phy_id_mask	= 0xffffffff,