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

Pull networking updates from David Miller:

 1) Significantly shrink the core networking routing structures. Result
    of http://vger.kernel.org/~davem/seoul2017_netdev_keynote.pdf

 2) Add netdevsim driver for testing various offloads, from Jakub
    Kicinski.

 3) Support cross-chip FDB operations in DSA, from Vivien Didelot.

 4) Add a 2nd listener hash table for TCP, similar to what was done for
    UDP. From Martin KaFai Lau.

 5) Add eBPF based queue selection to tun, from Jason Wang.

 6) Lockless qdisc support, from John Fastabend.

 7) SCTP stream interleave support, from Xin Long.

 8) Smoother TCP receive autotuning, from Eric Dumazet.

 9) Lots of erspan tunneling enhancements, from William Tu.

10) Add true function call support to BPF, from Alexei Starovoitov.

11) Add explicit support for GRO HW offloading, from Michael Chan.

12) Support extack generation in more netlink subsystems. From Alexander
    Aring, Quentin Monnet, and Jakub Kicinski.

13) Add 1000BaseX, flow control, and EEE support to mvneta driver. From
    Russell King.

14) Add flow table abstraction to netfilter, from Pablo Neira Ayuso.

15) Many improvements and simplifications to the NFP driver bpf JIT,
    from Jakub Kicinski.

16) Support for ipv6 non-equal cost multipath routing, from Ido
    Schimmel.

17) Add resource abstration to devlink, from Arkadi Sharshevsky.

18) Packet scheduler classifier shared filter block support, from Jiri
    Pirko.

19) Avoid locking in act_csum, from Davide Caratti.

20) devinet_ioctl() simplifications from Al viro.

21) More TCP bpf improvements from Lawrence Brakmo.

22) Add support for onlink ipv6 route flag, similar to ipv4, from David
    Ahern.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1925 commits)
  tls: Add support for encryption using async offload accelerator
  ip6mr: fix stale iterator
  net/sched: kconfig: Remove blank help texts
  openvswitch: meter: Use 64-bit arithmetic instead of 32-bit
  tcp_nv: fix potential integer overflow in tcpnv_acked
  r8169: fix RTL8168EP take too long to complete driver initialization.
  qmi_wwan: Add support for Quectel EP06
  rtnetlink: enable IFLA_IF_NETNSID for RTM_NEWLINK
  ipmr: Fix ptrdiff_t print formatting
  ibmvnic: Wait for device response when changing MAC
  qlcnic: fix deadlock bug
  tcp: release sk_frag.page in tcp_disconnect
  ipv4: Get the address of interface correctly.
  net_sched: gen_estimator: fix lockdep splat
  net: macb: Handle HRESP error
  net/mlx5e: IPoIB, Fix copy-paste bug in flow steering refactoring
  ipv6: addrconf: break critical section in addrconf_verify_rtnl()
  ipv6: change route cache aging logic
  i40e/i40evf: Update DESC_NEEDED value to reflect larger value
  bnxt_en: cleanup DIM work on device shutdown
  ...

1 files changed, 253 insertions, 5 deletions

diff --git a/drivers/net/phy/phy-core.c b/drivers/net/phy/phy-core.c
index 21f75ae..4083f00 100644
--- a/drivers/net/phy/phy-core.c
+++ b/drivers/net/phy/phy-core.c
@@ -189,17 +189,61 @@ size_t phy_speeds(unsigned int *speeds, size_t size,
 	return count;
 }
 
+/**
+ * phy_resolve_aneg_linkmode - resolve the advertisments into phy settings
+ * @phydev: The phy_device struct
+ *
+ * Resolve our and the link partner advertisments into their corresponding
+ * speed and duplex. If full duplex was negotiated, extract the pause mode
+ * from the link partner mask.
+ */
+void phy_resolve_aneg_linkmode(struct phy_device *phydev)
+{
+	u32 common = phydev->lp_advertising & phydev->advertising;
+
+	if (common & ADVERTISED_10000baseT_Full) {
+		phydev->speed = SPEED_10000;
+		phydev->duplex = DUPLEX_FULL;
+	} else if (common & ADVERTISED_1000baseT_Full) {
+		phydev->speed = SPEED_1000;
+		phydev->duplex = DUPLEX_FULL;
+	} else if (common & ADVERTISED_1000baseT_Half) {
+		phydev->speed = SPEED_1000;
+		phydev->duplex = DUPLEX_HALF;
+	} else if (common & ADVERTISED_100baseT_Full) {
+		phydev->speed = SPEED_100;
+		phydev->duplex = DUPLEX_FULL;
+	} else if (common & ADVERTISED_100baseT_Half) {
+		phydev->speed = SPEED_100;
+		phydev->duplex = DUPLEX_HALF;
+	} else if (common & ADVERTISED_10baseT_Full) {
+		phydev->speed = SPEED_10;
+		phydev->duplex = DUPLEX_FULL;
+	} else if (common & ADVERTISED_10baseT_Half) {
+		phydev->speed = SPEED_10;
+		phydev->duplex = DUPLEX_HALF;
+	}
+
+	if (phydev->duplex == DUPLEX_FULL) {
+		phydev->pause = !!(phydev->lp_advertising & ADVERTISED_Pause);
+		phydev->asym_pause = !!(phydev->lp_advertising &
+					ADVERTISED_Asym_Pause);
+	}
+}
+EXPORT_SYMBOL_GPL(phy_resolve_aneg_linkmode);
+
 static void mmd_phy_indirect(struct mii_bus *bus, int phy_addr, int devad,
 			     u16 regnum)
 {
 	/* Write the desired MMD Devad */
-	bus->write(bus, phy_addr, MII_MMD_CTRL, devad);
+	__mdiobus_write(bus, phy_addr, MII_MMD_CTRL, devad);
 
 	/* Write the desired MMD register address */
-	bus->write(bus, phy_addr, MII_MMD_DATA, regnum);
+	__mdiobus_write(bus, phy_addr, MII_MMD_DATA, regnum);
 
 	/* Select the Function : DATA with no post increment */
-	bus->write(bus, phy_addr, MII_MMD_CTRL, devad | MII_MMD_CTRL_NOINCR);
+	__mdiobus_write(bus, phy_addr, MII_MMD_CTRL,
+			devad | MII_MMD_CTRL_NOINCR);
 }
 
 /**
@@ -232,7 +276,7 @@ int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum)
 		mmd_phy_indirect(bus, phy_addr, devad, regnum);
 
 		/* Read the content of the MMD's selected register */
-		val = bus->read(bus, phy_addr, MII_MMD_DATA);
+		val = __mdiobus_read(bus, phy_addr, MII_MMD_DATA);
 		mutex_unlock(&bus->mdio_lock);
 	}
 	return val;
@@ -271,7 +315,7 @@ int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val)
 		mmd_phy_indirect(bus, phy_addr, devad, regnum);
 
 		/* Write the data into MMD's selected register */
-		bus->write(bus, phy_addr, MII_MMD_DATA, val);
+		__mdiobus_write(bus, phy_addr, MII_MMD_DATA, val);
 		mutex_unlock(&bus->mdio_lock);
 
 		ret = 0;
@@ -279,3 +323,207 @@ int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val)
 	return ret;
 }
 EXPORT_SYMBOL(phy_write_mmd);
+
+/**
+ * __phy_modify() - Convenience function for modifying a PHY register
+ * @phydev: a pointer to a &struct phy_device
+ * @regnum: register number
+ * @mask: bit mask of bits to clear
+ * @set: bit mask of bits to set
+ *
+ * Unlocked helper function which allows a PHY register to be modified as
+ * new register value = (old register value & ~mask) | set
+ */
+int __phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set)
+{
+	int ret;
+
+	ret = __phy_read(phydev, regnum);
+	if (ret < 0)
+		return ret;
+
+	ret = __phy_write(phydev, regnum, (ret & ~mask) | set);
+
+	return ret < 0 ? ret : 0;
+}
+EXPORT_SYMBOL_GPL(__phy_modify);
+
+/**
+ * phy_modify - Convenience function for modifying a given PHY register
+ * @phydev: the phy_device struct
+ * @regnum: register number to write
+ * @mask: bit mask of bits to clear
+ * @set: new value of bits set in mask to write to @regnum
+ *
+ * NOTE: MUST NOT be called from interrupt context,
+ * because the bus read/write functions may wait for an interrupt
+ * to conclude the operation.
+ */
+int phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set)
+{
+	int ret;
+
+	mutex_lock(&phydev->mdio.bus->mdio_lock);
+	ret = __phy_modify(phydev, regnum, mask, set);
+	mutex_unlock(&phydev->mdio.bus->mdio_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(phy_modify);
+
+static int __phy_read_page(struct phy_device *phydev)
+{
+	return phydev->drv->read_page(phydev);
+}
+
+static int __phy_write_page(struct phy_device *phydev, int page)
+{
+	return phydev->drv->write_page(phydev, page);
+}
+
+/**
+ * phy_save_page() - take the bus lock and save the current page
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * Take the MDIO bus lock, and return the current page number. On error,
+ * returns a negative errno. phy_restore_page() must always be called
+ * after this, irrespective of success or failure of this call.
+ */
+int phy_save_page(struct phy_device *phydev)
+{
+	mutex_lock(&phydev->mdio.bus->mdio_lock);
+	return __phy_read_page(phydev);
+}
+EXPORT_SYMBOL_GPL(phy_save_page);
+
+/**
+ * phy_select_page() - take the bus lock, save the current page, and set a page
+ * @phydev: a pointer to a &struct phy_device
+ * @page: desired page
+ *
+ * Take the MDIO bus lock to protect against concurrent access, save the
+ * current PHY page, and set the current page.  On error, returns a
+ * negative errno, otherwise returns the previous page number.
+ * phy_restore_page() must always be called after this, irrespective
+ * of success or failure of this call.
+ */
+int phy_select_page(struct phy_device *phydev, int page)
+{
+	int ret, oldpage;
+
+	oldpage = ret = phy_save_page(phydev);
+	if (ret < 0)
+		return ret;
+
+	if (oldpage != page) {
+		ret = __phy_write_page(phydev, page);
+		if (ret < 0)
+			return ret;
+	}
+
+	return oldpage;
+}
+EXPORT_SYMBOL_GPL(phy_select_page);
+
+/**
+ * phy_restore_page() - restore the page register and release the bus lock
+ * @phydev: a pointer to a &struct phy_device
+ * @oldpage: the old page, return value from phy_save_page() or phy_select_page()
+ * @ret: operation's return code
+ *
+ * Release the MDIO bus lock, restoring @oldpage if it is a valid page.
+ * This function propagates the earliest error code from the group of
+ * operations.
+ *
+ * Returns:
+ *   @oldpage if it was a negative value, otherwise
+ *   @ret if it was a negative errno value, otherwise
+ *   phy_write_page()'s negative value if it were in error, otherwise
+ *   @ret.
+ */
+int phy_restore_page(struct phy_device *phydev, int oldpage, int ret)
+{
+	int r;
+
+	if (oldpage >= 0) {
+		r = __phy_write_page(phydev, oldpage);
+
+		/* Propagate the operation return code if the page write
+		 * was successful.
+		 */
+		if (ret >= 0 && r < 0)
+			ret = r;
+	} else {
+		/* Propagate the phy page selection error code */
+		ret = oldpage;
+	}
+
+	mutex_unlock(&phydev->mdio.bus->mdio_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(phy_restore_page);
+
+/**
+ * phy_read_paged() - Convenience function for reading a paged register
+ * @phydev: a pointer to a &struct phy_device
+ * @page: the page for the phy
+ * @regnum: register number
+ *
+ * Same rules as for phy_read().
+ */
+int phy_read_paged(struct phy_device *phydev, int page, u32 regnum)
+{
+	int ret = 0, oldpage;
+
+	oldpage = phy_select_page(phydev, page);
+	if (oldpage >= 0)
+		ret = __phy_read(phydev, regnum);
+
+	return phy_restore_page(phydev, oldpage, ret);
+}
+EXPORT_SYMBOL(phy_read_paged);
+
+/**
+ * phy_write_paged() - Convenience function for writing a paged register
+ * @phydev: a pointer to a &struct phy_device
+ * @page: the page for the phy
+ * @regnum: register number
+ * @val: value to write
+ *
+ * Same rules as for phy_write().
+ */
+int phy_write_paged(struct phy_device *phydev, int page, u32 regnum, u16 val)
+{
+	int ret = 0, oldpage;
+
+	oldpage = phy_select_page(phydev, page);
+	if (oldpage >= 0)
+		ret = __phy_write(phydev, regnum, val);
+
+	return phy_restore_page(phydev, oldpage, ret);
+}
+EXPORT_SYMBOL(phy_write_paged);
+
+/**
+ * phy_modify_paged() - Convenience function for modifying a paged register
+ * @phydev: a pointer to a &struct phy_device
+ * @page: the page for the phy
+ * @regnum: register number
+ * @mask: bit mask of bits to clear
+ * @set: bit mask of bits to set
+ *
+ * Same rules as for phy_read() and phy_write().
+ */
+int phy_modify_paged(struct phy_device *phydev, int page, u32 regnum,
+		     u16 mask, u16 set)
+{
+	int ret = 0, oldpage;
+
+	oldpage = phy_select_page(phydev, page);
+	if (oldpage >= 0)
+		ret = __phy_modify(phydev, regnum, mask, set);
+
+	return phy_restore_page(phydev, oldpage, ret);
+}
+EXPORT_SYMBOL(phy_modify_paged);