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, 332 insertions, 0 deletions

diff --git a/drivers/net/ethernet/sfc/falcon/mdio_10g.c b/drivers/net/ethernet/sfc/falcon/mdio_10g.c
new file mode 100644
index 000000000..540278161
--- /dev/null
+++ b/drivers/net/ethernet/sfc/falcon/mdio_10g.c
@@ -0,0 +1,332 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/****************************************************************************
+ * Driver for Solarflare network controllers and boards
+ * Copyright 2006-2011 Solarflare Communications Inc.
+ */
+/*
+ * Useful functions for working with MDIO clause 45 PHYs
+ */
+#include <linux/types.h>
+#include <linux/ethtool.h>
+#include <linux/delay.h>
+#include "net_driver.h"
+#include "mdio_10g.h"
+#include "workarounds.h"
+
+unsigned ef4_mdio_id_oui(u32 id)
+{
+	unsigned oui = 0;
+	int i;
+
+	/* The bits of the OUI are designated a..x, with a=0 and b variable.
+	 * In the id register c is the MSB but the OUI is conventionally
+	 * written as bytes h..a, p..i, x..q.  Reorder the bits accordingly. */
+	for (i = 0; i < 22; ++i)
+		if (id & (1 << (i + 10)))
+			oui |= 1 << (i ^ 7);
+
+	return oui;
+}
+
+int ef4_mdio_reset_mmd(struct ef4_nic *port, int mmd,
+			    int spins, int spintime)
+{
+	u32 ctrl;
+
+	/* Catch callers passing values in the wrong units (or just silly) */
+	EF4_BUG_ON_PARANOID(spins * spintime >= 5000);
+
+	ef4_mdio_write(port, mmd, MDIO_CTRL1, MDIO_CTRL1_RESET);
+	/* Wait for the reset bit to clear. */
+	do {
+		msleep(spintime);
+		ctrl = ef4_mdio_read(port, mmd, MDIO_CTRL1);
+		spins--;
+
+	} while (spins && (ctrl & MDIO_CTRL1_RESET));
+
+	return spins ? spins : -ETIMEDOUT;
+}
+
+static int ef4_mdio_check_mmd(struct ef4_nic *efx, int mmd)
+{
+	int status;
+
+	if (mmd != MDIO_MMD_AN) {
+		/* Read MMD STATUS2 to check it is responding. */
+		status = ef4_mdio_read(efx, mmd, MDIO_STAT2);
+		if ((status & MDIO_STAT2_DEVPRST) != MDIO_STAT2_DEVPRST_VAL) {
+			netif_err(efx, hw, efx->net_dev,
+				  "PHY MMD %d not responding.\n", mmd);
+			return -EIO;
+		}
+	}
+
+	return 0;
+}
+
+/* This ought to be ridiculous overkill. We expect it to fail rarely */
+#define MDIO45_RESET_TIME	1000 /* ms */
+#define MDIO45_RESET_ITERS	100
+
+int ef4_mdio_wait_reset_mmds(struct ef4_nic *efx, unsigned int mmd_mask)
+{
+	const int spintime = MDIO45_RESET_TIME / MDIO45_RESET_ITERS;
+	int tries = MDIO45_RESET_ITERS;
+	int rc = 0;
+	int in_reset;
+
+	while (tries) {
+		int mask = mmd_mask;
+		int mmd = 0;
+		int stat;
+		in_reset = 0;
+		while (mask) {
+			if (mask & 1) {
+				stat = ef4_mdio_read(efx, mmd, MDIO_CTRL1);
+				if (stat < 0) {
+					netif_err(efx, hw, efx->net_dev,
+						  "failed to read status of"
+						  " MMD %d\n", mmd);
+					return -EIO;
+				}
+				if (stat & MDIO_CTRL1_RESET)
+					in_reset |= (1 << mmd);
+			}
+			mask = mask >> 1;
+			mmd++;
+		}
+		if (!in_reset)
+			break;
+		tries--;
+		msleep(spintime);
+	}
+	if (in_reset != 0) {
+		netif_err(efx, hw, efx->net_dev,
+			  "not all MMDs came out of reset in time."
+			  " MMDs still in reset: %x\n", in_reset);
+		rc = -ETIMEDOUT;
+	}
+	return rc;
+}
+
+int ef4_mdio_check_mmds(struct ef4_nic *efx, unsigned int mmd_mask)
+{
+	int mmd = 0, probe_mmd, devs1, devs2;
+	u32 devices;
+
+	/* Historically we have probed the PHYXS to find out what devices are
+	 * present,but that doesn't work so well if the PHYXS isn't expected
+	 * to exist, if so just find the first item in the list supplied. */
+	probe_mmd = (mmd_mask & MDIO_DEVS_PHYXS) ? MDIO_MMD_PHYXS :
+	    __ffs(mmd_mask);
+
+	/* Check all the expected MMDs are present */
+	devs1 = ef4_mdio_read(efx, probe_mmd, MDIO_DEVS1);
+	devs2 = ef4_mdio_read(efx, probe_mmd, MDIO_DEVS2);
+	if (devs1 < 0 || devs2 < 0) {
+		netif_err(efx, hw, efx->net_dev,
+			  "failed to read devices present\n");
+		return -EIO;
+	}
+	devices = devs1 | (devs2 << 16);
+	if ((devices & mmd_mask) != mmd_mask) {
+		netif_err(efx, hw, efx->net_dev,
+			  "required MMDs not present: got %x, wanted %x\n",
+			  devices, mmd_mask);
+		return -ENODEV;
+	}
+	netif_vdbg(efx, hw, efx->net_dev, "Devices present: %x\n", devices);
+
+	/* Check all required MMDs are responding and happy. */
+	while (mmd_mask) {
+		if ((mmd_mask & 1) && ef4_mdio_check_mmd(efx, mmd))
+			return -EIO;
+		mmd_mask = mmd_mask >> 1;
+		mmd++;
+	}
+
+	return 0;
+}
+
+bool ef4_mdio_links_ok(struct ef4_nic *efx, unsigned int mmd_mask)
+{
+	/* If the port is in loopback, then we should only consider a subset
+	 * of mmd's */
+	if (LOOPBACK_INTERNAL(efx))
+		return true;
+	else if (LOOPBACK_MASK(efx) & LOOPBACKS_WS)
+		return false;
+	else if (ef4_phy_mode_disabled(efx->phy_mode))
+		return false;
+	else if (efx->loopback_mode == LOOPBACK_PHYXS)
+		mmd_mask &= ~(MDIO_DEVS_PHYXS |
+			      MDIO_DEVS_PCS |
+			      MDIO_DEVS_PMAPMD |
+			      MDIO_DEVS_AN);
+	else if (efx->loopback_mode == LOOPBACK_PCS)
+		mmd_mask &= ~(MDIO_DEVS_PCS |
+			      MDIO_DEVS_PMAPMD |
+			      MDIO_DEVS_AN);
+	else if (efx->loopback_mode == LOOPBACK_PMAPMD)
+		mmd_mask &= ~(MDIO_DEVS_PMAPMD |
+			      MDIO_DEVS_AN);
+
+	return mdio45_links_ok(&efx->mdio, mmd_mask);
+}
+
+void ef4_mdio_transmit_disable(struct ef4_nic *efx)
+{
+	ef4_mdio_set_flag(efx, MDIO_MMD_PMAPMD,
+			  MDIO_PMA_TXDIS, MDIO_PMD_TXDIS_GLOBAL,
+			  efx->phy_mode & PHY_MODE_TX_DISABLED);
+}
+
+void ef4_mdio_phy_reconfigure(struct ef4_nic *efx)
+{
+	ef4_mdio_set_flag(efx, MDIO_MMD_PMAPMD,
+			  MDIO_CTRL1, MDIO_PMA_CTRL1_LOOPBACK,
+			  efx->loopback_mode == LOOPBACK_PMAPMD);
+	ef4_mdio_set_flag(efx, MDIO_MMD_PCS,
+			  MDIO_CTRL1, MDIO_PCS_CTRL1_LOOPBACK,
+			  efx->loopback_mode == LOOPBACK_PCS);
+	ef4_mdio_set_flag(efx, MDIO_MMD_PHYXS,
+			  MDIO_CTRL1, MDIO_PHYXS_CTRL1_LOOPBACK,
+			  efx->loopback_mode == LOOPBACK_PHYXS_WS);
+}
+
+static void ef4_mdio_set_mmd_lpower(struct ef4_nic *efx,
+				    int lpower, int mmd)
+{
+	int stat = ef4_mdio_read(efx, mmd, MDIO_STAT1);
+
+	netif_vdbg(efx, drv, efx->net_dev, "Setting low power mode for MMD %d to %d\n",
+		  mmd, lpower);
+
+	if (stat & MDIO_STAT1_LPOWERABLE) {
+		ef4_mdio_set_flag(efx, mmd, MDIO_CTRL1,
+				  MDIO_CTRL1_LPOWER, lpower);
+	}
+}
+
+void ef4_mdio_set_mmds_lpower(struct ef4_nic *efx,
+			      int low_power, unsigned int mmd_mask)
+{
+	int mmd = 0;
+	mmd_mask &= ~MDIO_DEVS_AN;
+	while (mmd_mask) {
+		if (mmd_mask & 1)
+			ef4_mdio_set_mmd_lpower(efx, low_power, mmd);
+		mmd_mask = (mmd_mask >> 1);
+		mmd++;
+	}
+}
+
+/**
+ * ef4_mdio_set_link_ksettings - Set (some of) the PHY settings over MDIO.
+ * @efx:		Efx NIC
+ * @cmd:		New settings
+ */
+int ef4_mdio_set_link_ksettings(struct ef4_nic *efx,
+				const struct ethtool_link_ksettings *cmd)
+{
+	struct ethtool_link_ksettings prev = {
+		.base.cmd = ETHTOOL_GLINKSETTINGS
+	};
+	u32 prev_advertising, advertising;
+	u32 prev_supported;
+
+	efx->phy_op->get_link_ksettings(efx, &prev);
+
+	ethtool_convert_link_mode_to_legacy_u32(&advertising,
+						cmd->link_modes.advertising);
+	ethtool_convert_link_mode_to_legacy_u32(&prev_advertising,
+						prev.link_modes.advertising);
+	ethtool_convert_link_mode_to_legacy_u32(&prev_supported,
+						prev.link_modes.supported);
+
+	if (advertising == prev_advertising &&
+	    cmd->base.speed == prev.base.speed &&
+	    cmd->base.duplex == prev.base.duplex &&
+	    cmd->base.port == prev.base.port &&
+	    cmd->base.autoneg == prev.base.autoneg)
+		return 0;
+
+	/* We can only change these settings for -T PHYs */
+	if (prev.base.port != PORT_TP || cmd->base.port != PORT_TP)
+		return -EINVAL;
+
+	/* Check that PHY supports these settings */
+	if (!cmd->base.autoneg ||
+	    (advertising | SUPPORTED_Autoneg) & ~prev_supported)
+		return -EINVAL;
+
+	ef4_link_set_advertising(efx, advertising | ADVERTISED_Autoneg);
+	ef4_mdio_an_reconfigure(efx);
+	return 0;
+}
+
+/**
+ * ef4_mdio_an_reconfigure - Push advertising flags and restart autonegotiation
+ * @efx:		Efx NIC
+ */
+void ef4_mdio_an_reconfigure(struct ef4_nic *efx)
+{
+	int reg;
+
+	WARN_ON(!(efx->mdio.mmds & MDIO_DEVS_AN));
+
+	/* Set up the base page */
+	reg = ADVERTISE_CSMA | ADVERTISE_RESV;
+	if (efx->link_advertising & ADVERTISED_Pause)
+		reg |= ADVERTISE_PAUSE_CAP;
+	if (efx->link_advertising & ADVERTISED_Asym_Pause)
+		reg |= ADVERTISE_PAUSE_ASYM;
+	ef4_mdio_write(efx, MDIO_MMD_AN, MDIO_AN_ADVERTISE, reg);
+
+	/* Set up the (extended) next page */
+	efx->phy_op->set_npage_adv(efx, efx->link_advertising);
+
+	/* Enable and restart AN */
+	reg = ef4_mdio_read(efx, MDIO_MMD_AN, MDIO_CTRL1);
+	reg |= MDIO_AN_CTRL1_ENABLE | MDIO_AN_CTRL1_RESTART | MDIO_AN_CTRL1_XNP;
+	ef4_mdio_write(efx, MDIO_MMD_AN, MDIO_CTRL1, reg);
+}
+
+u8 ef4_mdio_get_pause(struct ef4_nic *efx)
+{
+	BUILD_BUG_ON(EF4_FC_AUTO & (EF4_FC_RX | EF4_FC_TX));
+
+	if (!(efx->wanted_fc & EF4_FC_AUTO))
+		return efx->wanted_fc;
+
+	WARN_ON(!(efx->mdio.mmds & MDIO_DEVS_AN));
+
+	return mii_resolve_flowctrl_fdx(
+		mii_advertise_flowctrl(efx->wanted_fc),
+		ef4_mdio_read(efx, MDIO_MMD_AN, MDIO_AN_LPA));
+}
+
+int ef4_mdio_test_alive(struct ef4_nic *efx)
+{
+	int rc;
+	int devad = __ffs(efx->mdio.mmds);
+	u16 physid1, physid2;
+
+	mutex_lock(&efx->mac_lock);
+
+	physid1 = ef4_mdio_read(efx, devad, MDIO_DEVID1);
+	physid2 = ef4_mdio_read(efx, devad, MDIO_DEVID2);
+
+	if ((physid1 == 0x0000) || (physid1 == 0xffff) ||
+	    (physid2 == 0x0000) || (physid2 == 0xffff)) {
+		netif_err(efx, hw, efx->net_dev,
+			  "no MDIO PHY present with ID %d\n", efx->mdio.prtad);
+		rc = -EINVAL;
+	} else {
+		rc = ef4_mdio_check_mmds(efx, efx->mdio.mmds);
+	}
+
+	mutex_unlock(&efx->mac_lock);
+	return rc;
+}