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, 282 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mthca/mthca_reset.c b/drivers/infiniband/hw/mthca/mthca_reset.c
new file mode 100644
index 000000000..2a6979e4a
--- /dev/null
+++ b/drivers/infiniband/hw/mthca/mthca_reset.c
@@ -0,0 +1,282 @@
+/*
+ * Copyright (c) 2004 Topspin Communications.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+
+#include "mthca_dev.h"
+#include "mthca_cmd.h"
+
+int mthca_reset(struct mthca_dev *mdev)
+{
+	int i;
+	int err = 0;
+	u32 *hca_header    = NULL;
+	u32 *bridge_header = NULL;
+	struct pci_dev *bridge = NULL;
+	int bridge_pcix_cap = 0;
+	int hca_pcie_cap = 0;
+	int hca_pcix_cap = 0;
+
+	u16 devctl;
+	u16 linkctl;
+
+#define MTHCA_RESET_OFFSET 0xf0010
+#define MTHCA_RESET_VALUE  swab32(1)
+
+	/*
+	 * Reset the chip.  This is somewhat ugly because we have to
+	 * save off the PCI header before reset and then restore it
+	 * after the chip reboots.  We skip config space offsets 22
+	 * and 23 since those have a special meaning.
+	 *
+	 * To make matters worse, for Tavor (PCI-X HCA) we have to
+	 * find the associated bridge device and save off its PCI
+	 * header as well.
+	 */
+
+	if (!(mdev->mthca_flags & MTHCA_FLAG_PCIE)) {
+		/* Look for the bridge -- its device ID will be 2 more
+		   than HCA's device ID. */
+		while ((bridge = pci_get_device(mdev->pdev->vendor,
+						mdev->pdev->device + 2,
+						bridge)) != NULL) {
+			if (bridge->hdr_type    == PCI_HEADER_TYPE_BRIDGE &&
+			    bridge->subordinate == mdev->pdev->bus) {
+				mthca_dbg(mdev, "Found bridge: %s\n",
+					  pci_name(bridge));
+				break;
+			}
+		}
+
+		if (!bridge) {
+			/*
+			 * Didn't find a bridge for a Tavor device --
+			 * assume we're in no-bridge mode and hope for
+			 * the best.
+			 */
+			mthca_warn(mdev, "No bridge found for %s\n",
+				  pci_name(mdev->pdev));
+		}
+
+	}
+
+	/* For Arbel do we need to save off the full 4K PCI Express header?? */
+	hca_header = kmalloc(256, GFP_KERNEL);
+	if (!hca_header) {
+		err = -ENOMEM;
+		goto put_dev;
+	}
+
+	for (i = 0; i < 64; ++i) {
+		if (i == 22 || i == 23)
+			continue;
+		if (pci_read_config_dword(mdev->pdev, i * 4, hca_header + i)) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't save HCA "
+				  "PCI header, aborting.\n");
+			goto free_hca;
+		}
+	}
+
+	hca_pcix_cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX);
+	hca_pcie_cap = pci_pcie_cap(mdev->pdev);
+
+	if (bridge) {
+		bridge_header = kmalloc(256, GFP_KERNEL);
+		if (!bridge_header) {
+			err = -ENOMEM;
+			goto free_hca;
+		}
+
+		for (i = 0; i < 64; ++i) {
+			if (i == 22 || i == 23)
+				continue;
+			if (pci_read_config_dword(bridge, i * 4, bridge_header + i)) {
+				err = -ENODEV;
+				mthca_err(mdev, "Couldn't save HCA bridge "
+					  "PCI header, aborting.\n");
+				goto free_bh;
+			}
+		}
+		bridge_pcix_cap = pci_find_capability(bridge, PCI_CAP_ID_PCIX);
+		if (!bridge_pcix_cap) {
+				err = -ENODEV;
+				mthca_err(mdev, "Couldn't locate HCA bridge "
+					  "PCI-X capability, aborting.\n");
+				goto free_bh;
+		}
+	}
+
+	/* actually hit reset */
+	{
+		void __iomem *reset = ioremap(pci_resource_start(mdev->pdev, 0) +
+					      MTHCA_RESET_OFFSET, 4);
+
+		if (!reset) {
+			err = -ENOMEM;
+			mthca_err(mdev, "Couldn't map HCA reset register, "
+				  "aborting.\n");
+			goto free_bh;
+		}
+
+		writel(MTHCA_RESET_VALUE, reset);
+		iounmap(reset);
+	}
+
+	/* Docs say to wait one second before accessing device */
+	msleep(1000);
+
+	/* Now wait for PCI device to start responding again */
+	{
+		u32 v;
+		int c = 0;
+
+		for (c = 0; c < 100; ++c) {
+			if (pci_read_config_dword(bridge ? bridge : mdev->pdev, 0, &v)) {
+				err = -ENODEV;
+				mthca_err(mdev, "Couldn't access HCA after reset, "
+					  "aborting.\n");
+				goto free_bh;
+			}
+
+			if (v != 0xffffffff)
+				goto good;
+
+			msleep(100);
+		}
+
+		err = -ENODEV;
+		mthca_err(mdev, "PCI device did not come back after reset, "
+			  "aborting.\n");
+		goto free_bh;
+	}
+
+good:
+	/* Now restore the PCI headers */
+	if (bridge) {
+		if (pci_write_config_dword(bridge, bridge_pcix_cap + 0x8,
+				 bridge_header[(bridge_pcix_cap + 0x8) / 4])) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't restore HCA bridge Upstream "
+				  "split transaction control, aborting.\n");
+			goto free_bh;
+		}
+		if (pci_write_config_dword(bridge, bridge_pcix_cap + 0xc,
+				 bridge_header[(bridge_pcix_cap + 0xc) / 4])) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't restore HCA bridge Downstream "
+				  "split transaction control, aborting.\n");
+			goto free_bh;
+		}
+		/*
+		 * Bridge control register is at 0x3e, so we'll
+		 * naturally restore it last in this loop.
+		 */
+		for (i = 0; i < 16; ++i) {
+			if (i * 4 == PCI_COMMAND)
+				continue;
+
+			if (pci_write_config_dword(bridge, i * 4, bridge_header[i])) {
+				err = -ENODEV;
+				mthca_err(mdev, "Couldn't restore HCA bridge reg %x, "
+					  "aborting.\n", i);
+				goto free_bh;
+			}
+		}
+
+		if (pci_write_config_dword(bridge, PCI_COMMAND,
+					   bridge_header[PCI_COMMAND / 4])) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't restore HCA bridge COMMAND, "
+				  "aborting.\n");
+			goto free_bh;
+		}
+	}
+
+	if (hca_pcix_cap) {
+		if (pci_write_config_dword(mdev->pdev, hca_pcix_cap,
+				 hca_header[hca_pcix_cap / 4])) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't restore HCA PCI-X "
+				  "command register, aborting.\n");
+			goto free_bh;
+		}
+	}
+
+	if (hca_pcie_cap) {
+		devctl = hca_header[(hca_pcie_cap + PCI_EXP_DEVCTL) / 4];
+		if (pcie_capability_write_word(mdev->pdev, PCI_EXP_DEVCTL,
+					       devctl)) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't restore HCA PCI Express "
+				  "Device Control register, aborting.\n");
+			goto free_bh;
+		}
+		linkctl = hca_header[(hca_pcie_cap + PCI_EXP_LNKCTL) / 4];
+		if (pcie_capability_write_word(mdev->pdev, PCI_EXP_LNKCTL,
+					       linkctl)) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't restore HCA PCI Express "
+				  "Link control register, aborting.\n");
+			goto free_bh;
+		}
+	}
+
+	for (i = 0; i < 16; ++i) {
+		if (i * 4 == PCI_COMMAND)
+			continue;
+
+		if (pci_write_config_dword(mdev->pdev, i * 4, hca_header[i])) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't restore HCA reg %x, "
+				  "aborting.\n", i);
+			goto free_bh;
+		}
+	}
+
+	if (pci_write_config_dword(mdev->pdev, PCI_COMMAND,
+				   hca_header[PCI_COMMAND / 4])) {
+		err = -ENODEV;
+		mthca_err(mdev, "Couldn't restore HCA COMMAND, "
+			  "aborting.\n");
+	}
+free_bh:
+	kfree(bridge_header);
+free_hca:
+	kfree(hca_header);
+put_dev:
+	pci_dev_put(bridge);
+	return err;
+}