Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 598 insertions, 0 deletions

diff --git a/drivers/net/mdio.c b/drivers/net/mdio.c
new file mode 100644
index 000000000..e08c90ac0
--- /dev/null
+++ b/drivers/net/mdio.c
@@ -0,0 +1,598 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * mdio.c: Generic support for MDIO-compatible transceivers
+ * Copyright 2006-2009 Solarflare Communications Inc.
+ */
+
+#include <linux/kernel.h>
+#include <linux/capability.h>
+#include <linux/errno.h>
+#include <linux/ethtool.h>
+#include <linux/mdio.h>
+#include <linux/module.h>
+
+MODULE_DESCRIPTION("Generic support for MDIO-compatible transceivers");
+MODULE_AUTHOR("Copyright 2006-2009 Solarflare Communications Inc.");
+MODULE_LICENSE("GPL");
+
+/**
+ * mdio45_probe - probe for an MDIO (clause 45) device
+ * @mdio: MDIO interface
+ * @prtad: Expected PHY address
+ *
+ * This sets @prtad and @mmds in the MDIO interface if successful.
+ * Returns 0 on success, negative on error.
+ */
+int mdio45_probe(struct mdio_if_info *mdio, int prtad)
+{
+	int mmd, stat2, devs1, devs2;
+
+	/* Assume PHY must have at least one of PMA/PMD, WIS, PCS, PHY
+	 * XS or DTE XS; give up if none is present. */
+	for (mmd = 1; mmd <= 5; mmd++) {
+		/* Is this MMD present? */
+		stat2 = mdio->mdio_read(mdio->dev, prtad, mmd, MDIO_STAT2);
+		if (stat2 < 0 ||
+		    (stat2 & MDIO_STAT2_DEVPRST) != MDIO_STAT2_DEVPRST_VAL)
+			continue;
+
+		/* It should tell us about all the other MMDs */
+		devs1 = mdio->mdio_read(mdio->dev, prtad, mmd, MDIO_DEVS1);
+		devs2 = mdio->mdio_read(mdio->dev, prtad, mmd, MDIO_DEVS2);
+		if (devs1 < 0 || devs2 < 0)
+			continue;
+
+		mdio->prtad = prtad;
+		mdio->mmds = devs1 | (devs2 << 16);
+		return 0;
+	}
+
+	return -ENODEV;
+}
+EXPORT_SYMBOL(mdio45_probe);
+
+/**
+ * mdio_set_flag - set or clear flag in an MDIO register
+ * @mdio: MDIO interface
+ * @prtad: PHY address
+ * @devad: MMD address
+ * @addr: Register address
+ * @mask: Mask for flag (single bit set)
+ * @sense: New value of flag
+ *
+ * This debounces changes: it does not write the register if the flag
+ * already has the proper value.  Returns 0 on success, negative on error.
+ */
+int mdio_set_flag(const struct mdio_if_info *mdio,
+		  int prtad, int devad, u16 addr, int mask,
+		  bool sense)
+{
+	int old_val = mdio->mdio_read(mdio->dev, prtad, devad, addr);
+	int new_val;
+
+	if (old_val < 0)
+		return old_val;
+	if (sense)
+		new_val = old_val | mask;
+	else
+		new_val = old_val & ~mask;
+	if (old_val == new_val)
+		return 0;
+	return mdio->mdio_write(mdio->dev, prtad, devad, addr, new_val);
+}
+EXPORT_SYMBOL(mdio_set_flag);
+
+/**
+ * mdio45_links_ok - is link status up/OK
+ * @mdio: MDIO interface
+ * @mmd_mask: Mask for MMDs to check
+ *
+ * Returns 1 if the PHY reports link status up/OK, 0 otherwise.
+ * @mmd_mask is normally @mdio->mmds, but if loopback is enabled
+ * the MMDs being bypassed should be excluded from the mask.
+ */
+int mdio45_links_ok(const struct mdio_if_info *mdio, u32 mmd_mask)
+{
+	int devad, reg;
+
+	if (!mmd_mask) {
+		/* Use absence of XGMII faults in lieu of link state */
+		reg = mdio->mdio_read(mdio->dev, mdio->prtad,
+				      MDIO_MMD_PHYXS, MDIO_STAT2);
+		return reg >= 0 && !(reg & MDIO_STAT2_RXFAULT);
+	}
+
+	for (devad = 0; mmd_mask; devad++) {
+		if (mmd_mask & (1 << devad)) {
+			mmd_mask &= ~(1 << devad);
+
+			/* Reset the latched status and fault flags */
+			mdio->mdio_read(mdio->dev, mdio->prtad,
+					devad, MDIO_STAT1);
+			if (devad == MDIO_MMD_PMAPMD || devad == MDIO_MMD_PCS ||
+			    devad == MDIO_MMD_PHYXS || devad == MDIO_MMD_DTEXS)
+				mdio->mdio_read(mdio->dev, mdio->prtad,
+						devad, MDIO_STAT2);
+
+			/* Check the current status and fault flags */
+			reg = mdio->mdio_read(mdio->dev, mdio->prtad,
+					      devad, MDIO_STAT1);
+			if (reg < 0 ||
+			    (reg & (MDIO_STAT1_FAULT | MDIO_STAT1_LSTATUS)) !=
+			    MDIO_STAT1_LSTATUS)
+				return false;
+		}
+	}
+
+	return true;
+}
+EXPORT_SYMBOL(mdio45_links_ok);
+
+/**
+ * mdio45_nway_restart - restart auto-negotiation for this interface
+ * @mdio: MDIO interface
+ *
+ * Returns 0 on success, negative on error.
+ */
+int mdio45_nway_restart(const struct mdio_if_info *mdio)
+{
+	if (!(mdio->mmds & MDIO_DEVS_AN))
+		return -EOPNOTSUPP;
+
+	mdio_set_flag(mdio, mdio->prtad, MDIO_MMD_AN, MDIO_CTRL1,
+		      MDIO_AN_CTRL1_RESTART, true);
+	return 0;
+}
+EXPORT_SYMBOL(mdio45_nway_restart);
+
+static u32 mdio45_get_an(const struct mdio_if_info *mdio, u16 addr)
+{
+	u32 result = 0;
+	int reg;
+
+	reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN, addr);
+	if (reg & ADVERTISE_10HALF)
+		result |= ADVERTISED_10baseT_Half;
+	if (reg & ADVERTISE_10FULL)
+		result |= ADVERTISED_10baseT_Full;
+	if (reg & ADVERTISE_100HALF)
+		result |= ADVERTISED_100baseT_Half;
+	if (reg & ADVERTISE_100FULL)
+		result |= ADVERTISED_100baseT_Full;
+	if (reg & ADVERTISE_PAUSE_CAP)
+		result |= ADVERTISED_Pause;
+	if (reg & ADVERTISE_PAUSE_ASYM)
+		result |= ADVERTISED_Asym_Pause;
+	return result;
+}
+
+/**
+ * mdio45_ethtool_gset_npage - get settings for ETHTOOL_GSET
+ * @mdio: MDIO interface
+ * @ecmd: Ethtool request structure
+ * @npage_adv: Modes currently advertised on next pages
+ * @npage_lpa: Modes advertised by link partner on next pages
+ *
+ * The @ecmd parameter is expected to have been cleared before calling
+ * mdio45_ethtool_gset_npage().
+ *
+ * Since the CSRs for auto-negotiation using next pages are not fully
+ * standardised, this function does not attempt to decode them.  The
+ * caller must pass them in.
+ */
+void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
+			       struct ethtool_cmd *ecmd,
+			       u32 npage_adv, u32 npage_lpa)
+{
+	int reg;
+	u32 speed;
+
+	BUILD_BUG_ON(MDIO_SUPPORTS_C22 != ETH_MDIO_SUPPORTS_C22);
+	BUILD_BUG_ON(MDIO_SUPPORTS_C45 != ETH_MDIO_SUPPORTS_C45);
+
+	ecmd->transceiver = XCVR_INTERNAL;
+	ecmd->phy_address = mdio->prtad;
+	ecmd->mdio_support =
+		mdio->mode_support & (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22);
+
+	reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+			      MDIO_CTRL2);
+	switch (reg & MDIO_PMA_CTRL2_TYPE) {
+	case MDIO_PMA_CTRL2_10GBT:
+	case MDIO_PMA_CTRL2_1000BT:
+	case MDIO_PMA_CTRL2_100BTX:
+	case MDIO_PMA_CTRL2_10BT:
+		ecmd->port = PORT_TP;
+		ecmd->supported = SUPPORTED_TP;
+		reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+				      MDIO_SPEED);
+		if (reg & MDIO_SPEED_10G)
+			ecmd->supported |= SUPPORTED_10000baseT_Full;
+		if (reg & MDIO_PMA_SPEED_1000)
+			ecmd->supported |= (SUPPORTED_1000baseT_Full |
+					    SUPPORTED_1000baseT_Half);
+		if (reg & MDIO_PMA_SPEED_100)
+			ecmd->supported |= (SUPPORTED_100baseT_Full |
+					    SUPPORTED_100baseT_Half);
+		if (reg & MDIO_PMA_SPEED_10)
+			ecmd->supported |= (SUPPORTED_10baseT_Full |
+					    SUPPORTED_10baseT_Half);
+		ecmd->advertising = ADVERTISED_TP;
+		break;
+
+	case MDIO_PMA_CTRL2_10GBCX4:
+		ecmd->port = PORT_OTHER;
+		ecmd->supported = 0;
+		ecmd->advertising = 0;
+		break;
+
+	case MDIO_PMA_CTRL2_10GBKX4:
+	case MDIO_PMA_CTRL2_10GBKR:
+	case MDIO_PMA_CTRL2_1000BKX:
+		ecmd->port = PORT_OTHER;
+		ecmd->supported = SUPPORTED_Backplane;
+		reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+				      MDIO_PMA_EXTABLE);
+		if (reg & MDIO_PMA_EXTABLE_10GBKX4)
+			ecmd->supported |= SUPPORTED_10000baseKX4_Full;
+		if (reg & MDIO_PMA_EXTABLE_10GBKR)
+			ecmd->supported |= SUPPORTED_10000baseKR_Full;
+		if (reg & MDIO_PMA_EXTABLE_1000BKX)
+			ecmd->supported |= SUPPORTED_1000baseKX_Full;
+		reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+				      MDIO_PMA_10GBR_FECABLE);
+		if (reg & MDIO_PMA_10GBR_FECABLE_ABLE)
+			ecmd->supported |= SUPPORTED_10000baseR_FEC;
+		ecmd->advertising = ADVERTISED_Backplane;
+		break;
+
+	/* All the other defined modes are flavours of optical */
+	default:
+		ecmd->port = PORT_FIBRE;
+		ecmd->supported = SUPPORTED_FIBRE;
+		ecmd->advertising = ADVERTISED_FIBRE;
+		break;
+	}
+
+	if (mdio->mmds & MDIO_DEVS_AN) {
+		ecmd->supported |= SUPPORTED_Autoneg;
+		reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN,
+				      MDIO_CTRL1);
+		if (reg & MDIO_AN_CTRL1_ENABLE) {
+			ecmd->autoneg = AUTONEG_ENABLE;
+			ecmd->advertising |=
+				ADVERTISED_Autoneg |
+				mdio45_get_an(mdio, MDIO_AN_ADVERTISE) |
+				npage_adv;
+		} else {
+			ecmd->autoneg = AUTONEG_DISABLE;
+		}
+	} else {
+		ecmd->autoneg = AUTONEG_DISABLE;
+	}
+
+	if (ecmd->autoneg) {
+		u32 modes = 0;
+		int an_stat = mdio->mdio_read(mdio->dev, mdio->prtad,
+					      MDIO_MMD_AN, MDIO_STAT1);
+
+		/* If AN is complete and successful, report best common
+		 * mode, otherwise report best advertised mode. */
+		if (an_stat & MDIO_AN_STAT1_COMPLETE) {
+			ecmd->lp_advertising =
+				mdio45_get_an(mdio, MDIO_AN_LPA) | npage_lpa;
+			if (an_stat & MDIO_AN_STAT1_LPABLE)
+				ecmd->lp_advertising |= ADVERTISED_Autoneg;
+			modes = ecmd->advertising & ecmd->lp_advertising;
+		}
+		if ((modes & ~ADVERTISED_Autoneg) == 0)
+			modes = ecmd->advertising;
+
+		if (modes & (ADVERTISED_10000baseT_Full |
+			     ADVERTISED_10000baseKX4_Full |
+			     ADVERTISED_10000baseKR_Full)) {
+			speed = SPEED_10000;
+			ecmd->duplex = DUPLEX_FULL;
+		} else if (modes & (ADVERTISED_1000baseT_Full |
+				    ADVERTISED_1000baseT_Half |
+				    ADVERTISED_1000baseKX_Full)) {
+			speed = SPEED_1000;
+			ecmd->duplex = !(modes & ADVERTISED_1000baseT_Half);
+		} else if (modes & (ADVERTISED_100baseT_Full |
+				    ADVERTISED_100baseT_Half)) {
+			speed = SPEED_100;
+			ecmd->duplex = !!(modes & ADVERTISED_100baseT_Full);
+		} else {
+			speed = SPEED_10;
+			ecmd->duplex = !!(modes & ADVERTISED_10baseT_Full);
+		}
+	} else {
+		/* Report forced settings */
+		reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+				      MDIO_CTRL1);
+		speed = (((reg & MDIO_PMA_CTRL1_SPEED1000) ? 100 : 1)
+			 * ((reg & MDIO_PMA_CTRL1_SPEED100) ? 100 : 10));
+		ecmd->duplex = (reg & MDIO_CTRL1_FULLDPLX ||
+				speed == SPEED_10000);
+	}
+
+	ethtool_cmd_speed_set(ecmd, speed);
+
+	/* 10GBASE-T MDI/MDI-X */
+	if (ecmd->port == PORT_TP
+	    && (ethtool_cmd_speed(ecmd) == SPEED_10000)) {
+		switch (mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+					MDIO_PMA_10GBT_SWAPPOL)) {
+		case MDIO_PMA_10GBT_SWAPPOL_ABNX | MDIO_PMA_10GBT_SWAPPOL_CDNX:
+			ecmd->eth_tp_mdix = ETH_TP_MDI;
+			break;
+		case 0:
+			ecmd->eth_tp_mdix = ETH_TP_MDI_X;
+			break;
+		default:
+			/* It's complicated... */
+			ecmd->eth_tp_mdix = ETH_TP_MDI_INVALID;
+			break;
+		}
+	}
+}
+EXPORT_SYMBOL(mdio45_ethtool_gset_npage);
+
+/**
+ * mdio45_ethtool_ksettings_get_npage - get settings for ETHTOOL_GLINKSETTINGS
+ * @mdio: MDIO interface
+ * @cmd: Ethtool request structure
+ * @npage_adv: Modes currently advertised on next pages
+ * @npage_lpa: Modes advertised by link partner on next pages
+ *
+ * The @cmd parameter is expected to have been cleared before calling
+ * mdio45_ethtool_ksettings_get_npage().
+ *
+ * Since the CSRs for auto-negotiation using next pages are not fully
+ * standardised, this function does not attempt to decode them.  The
+ * caller must pass them in.
+ */
+void mdio45_ethtool_ksettings_get_npage(const struct mdio_if_info *mdio,
+					struct ethtool_link_ksettings *cmd,
+					u32 npage_adv, u32 npage_lpa)
+{
+	int reg;
+	u32 speed, supported = 0, advertising = 0, lp_advertising = 0;
+
+	BUILD_BUG_ON(MDIO_SUPPORTS_C22 != ETH_MDIO_SUPPORTS_C22);
+	BUILD_BUG_ON(MDIO_SUPPORTS_C45 != ETH_MDIO_SUPPORTS_C45);
+
+	cmd->base.phy_address = mdio->prtad;
+	cmd->base.mdio_support =
+		mdio->mode_support & (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22);
+
+	reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+			      MDIO_CTRL2);
+	switch (reg & MDIO_PMA_CTRL2_TYPE) {
+	case MDIO_PMA_CTRL2_10GBT:
+	case MDIO_PMA_CTRL2_1000BT:
+	case MDIO_PMA_CTRL2_100BTX:
+	case MDIO_PMA_CTRL2_10BT:
+		cmd->base.port = PORT_TP;
+		supported = SUPPORTED_TP;
+		reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+				      MDIO_SPEED);
+		if (reg & MDIO_SPEED_10G)
+			supported |= SUPPORTED_10000baseT_Full;
+		if (reg & MDIO_PMA_SPEED_1000)
+			supported |= (SUPPORTED_1000baseT_Full |
+					    SUPPORTED_1000baseT_Half);
+		if (reg & MDIO_PMA_SPEED_100)
+			supported |= (SUPPORTED_100baseT_Full |
+					    SUPPORTED_100baseT_Half);
+		if (reg & MDIO_PMA_SPEED_10)
+			supported |= (SUPPORTED_10baseT_Full |
+					    SUPPORTED_10baseT_Half);
+		advertising = ADVERTISED_TP;
+		break;
+
+	case MDIO_PMA_CTRL2_10GBCX4:
+		cmd->base.port = PORT_OTHER;
+		supported = 0;
+		advertising = 0;
+		break;
+
+	case MDIO_PMA_CTRL2_10GBKX4:
+	case MDIO_PMA_CTRL2_10GBKR:
+	case MDIO_PMA_CTRL2_1000BKX:
+		cmd->base.port = PORT_OTHER;
+		supported = SUPPORTED_Backplane;
+		reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+				      MDIO_PMA_EXTABLE);
+		if (reg & MDIO_PMA_EXTABLE_10GBKX4)
+			supported |= SUPPORTED_10000baseKX4_Full;
+		if (reg & MDIO_PMA_EXTABLE_10GBKR)
+			supported |= SUPPORTED_10000baseKR_Full;
+		if (reg & MDIO_PMA_EXTABLE_1000BKX)
+			supported |= SUPPORTED_1000baseKX_Full;
+		reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+				      MDIO_PMA_10GBR_FECABLE);
+		if (reg & MDIO_PMA_10GBR_FECABLE_ABLE)
+			supported |= SUPPORTED_10000baseR_FEC;
+		advertising = ADVERTISED_Backplane;
+		break;
+
+	/* All the other defined modes are flavours of optical */
+	default:
+		cmd->base.port = PORT_FIBRE;
+		supported = SUPPORTED_FIBRE;
+		advertising = ADVERTISED_FIBRE;
+		break;
+	}
+
+	if (mdio->mmds & MDIO_DEVS_AN) {
+		supported |= SUPPORTED_Autoneg;
+		reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN,
+				      MDIO_CTRL1);
+		if (reg & MDIO_AN_CTRL1_ENABLE) {
+			cmd->base.autoneg = AUTONEG_ENABLE;
+			advertising |=
+				ADVERTISED_Autoneg |
+				mdio45_get_an(mdio, MDIO_AN_ADVERTISE) |
+				npage_adv;
+		} else {
+			cmd->base.autoneg = AUTONEG_DISABLE;
+		}
+	} else {
+		cmd->base.autoneg = AUTONEG_DISABLE;
+	}
+
+	if (cmd->base.autoneg) {
+		u32 modes = 0;
+		int an_stat = mdio->mdio_read(mdio->dev, mdio->prtad,
+					      MDIO_MMD_AN, MDIO_STAT1);
+
+		/* If AN is complete and successful, report best common
+		 * mode, otherwise report best advertised mode.
+		 */
+		if (an_stat & MDIO_AN_STAT1_COMPLETE) {
+			lp_advertising =
+				mdio45_get_an(mdio, MDIO_AN_LPA) | npage_lpa;
+			if (an_stat & MDIO_AN_STAT1_LPABLE)
+				lp_advertising |= ADVERTISED_Autoneg;
+			modes = advertising & lp_advertising;
+		}
+		if ((modes & ~ADVERTISED_Autoneg) == 0)
+			modes = advertising;
+
+		if (modes & (ADVERTISED_10000baseT_Full |
+			     ADVERTISED_10000baseKX4_Full |
+			     ADVERTISED_10000baseKR_Full)) {
+			speed = SPEED_10000;
+			cmd->base.duplex = DUPLEX_FULL;
+		} else if (modes & (ADVERTISED_1000baseT_Full |
+				    ADVERTISED_1000baseT_Half |
+				    ADVERTISED_1000baseKX_Full)) {
+			speed = SPEED_1000;
+			cmd->base.duplex = !(modes & ADVERTISED_1000baseT_Half);
+		} else if (modes & (ADVERTISED_100baseT_Full |
+				    ADVERTISED_100baseT_Half)) {
+			speed = SPEED_100;
+			cmd->base.duplex = !!(modes & ADVERTISED_100baseT_Full);
+		} else {
+			speed = SPEED_10;
+			cmd->base.duplex = !!(modes & ADVERTISED_10baseT_Full);
+		}
+	} else {
+		/* Report forced settings */
+		reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+				      MDIO_CTRL1);
+		speed = (((reg & MDIO_PMA_CTRL1_SPEED1000) ? 100 : 1)
+			 * ((reg & MDIO_PMA_CTRL1_SPEED100) ? 100 : 10));
+		cmd->base.duplex = (reg & MDIO_CTRL1_FULLDPLX ||
+				    speed == SPEED_10000);
+	}
+
+	cmd->base.speed = speed;
+
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
+						supported);
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
+						advertising);
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising,
+						lp_advertising);
+
+	/* 10GBASE-T MDI/MDI-X */
+	if (cmd->base.port == PORT_TP && (cmd->base.speed == SPEED_10000)) {
+		switch (mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+					MDIO_PMA_10GBT_SWAPPOL)) {
+		case MDIO_PMA_10GBT_SWAPPOL_ABNX | MDIO_PMA_10GBT_SWAPPOL_CDNX:
+			cmd->base.eth_tp_mdix = ETH_TP_MDI;
+			break;
+		case 0:
+			cmd->base.eth_tp_mdix = ETH_TP_MDI_X;
+			break;
+		default:
+			/* It's complicated... */
+			cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
+			break;
+		}
+	}
+}
+EXPORT_SYMBOL(mdio45_ethtool_ksettings_get_npage);
+
+/**
+ * mdio_mii_ioctl - MII ioctl interface for MDIO (clause 22 or 45) PHYs
+ * @mdio: MDIO interface
+ * @mii_data: MII ioctl data structure
+ * @cmd: MII ioctl command
+ *
+ * Returns 0 on success, negative on error.
+ */
+int mdio_mii_ioctl(const struct mdio_if_info *mdio,
+		   struct mii_ioctl_data *mii_data, int cmd)
+{
+	int prtad, devad;
+	u16 addr = mii_data->reg_num;
+
+	/* Validate/convert cmd to one of SIOC{G,S}MIIREG */
+	switch (cmd) {
+	case SIOCGMIIPHY:
+		if (mdio->prtad == MDIO_PRTAD_NONE)
+			return -EOPNOTSUPP;
+		mii_data->phy_id = mdio->prtad;
+		cmd = SIOCGMIIREG;
+		break;
+	case SIOCGMIIREG:
+	case SIOCSMIIREG:
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	/* Validate/convert phy_id */
+	if ((mdio->mode_support & MDIO_SUPPORTS_C45) &&
+	    mdio_phy_id_is_c45(mii_data->phy_id)) {
+		prtad = mdio_phy_id_prtad(mii_data->phy_id);
+		devad = mdio_phy_id_devad(mii_data->phy_id);
+	} else if ((mdio->mode_support & MDIO_SUPPORTS_C22) &&
+		   mii_data->phy_id < 0x20) {
+		prtad = mii_data->phy_id;
+		devad = MDIO_DEVAD_NONE;
+		addr &= 0x1f;
+	} else if ((mdio->mode_support & MDIO_EMULATE_C22) &&
+		   mdio->prtad != MDIO_PRTAD_NONE &&
+		   mii_data->phy_id == mdio->prtad) {
+		/* Remap commonly-used MII registers. */
+		prtad = mdio->prtad;
+		switch (addr) {
+		case MII_BMCR:
+		case MII_BMSR:
+		case MII_PHYSID1:
+		case MII_PHYSID2:
+			devad = __ffs(mdio->mmds);
+			break;
+		case MII_ADVERTISE:
+		case MII_LPA:
+			if (!(mdio->mmds & MDIO_DEVS_AN))
+				return -EINVAL;
+			devad = MDIO_MMD_AN;
+			if (addr == MII_ADVERTISE)
+				addr = MDIO_AN_ADVERTISE;
+			else
+				addr = MDIO_AN_LPA;
+			break;
+		default:
+			return -EINVAL;
+		}
+	} else {
+		return -EINVAL;
+	}
+
+	if (cmd == SIOCGMIIREG) {
+		int rc = mdio->mdio_read(mdio->dev, prtad, devad, addr);
+		if (rc < 0)
+			return rc;
+		mii_data->val_out = rc;
+		return 0;
+	} else {
+		return mdio->mdio_write(mdio->dev, prtad, devad, addr,
+					mii_data->val_in);
+	}
+}
+EXPORT_SYMBOL(mdio_mii_ioctl);