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, 257 insertions, 0 deletions

diff --git a/drivers/ata/pata_sc1200.c b/drivers/ata/pata_sc1200.c
new file mode 100644
index 000000000..f28daf62a
--- /dev/null
+++ b/drivers/ata/pata_sc1200.c
@@ -0,0 +1,257 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * New ATA layer SC1200 driver		Alan Cox <alan@lxorguk.ukuu.org.uk>
+ *
+ * TODO: Mode selection filtering
+ * TODO: Needs custom DMA cleanup code
+ *
+ * Based very heavily on
+ *
+ * linux/drivers/ide/pci/sc1200.c		Version 0.91	28-Jan-2003
+ *
+ * Copyright (C) 2000-2002		Mark Lord <mlord@pobox.com>
+ * May be copied or modified under the terms of the GNU General Public License
+ *
+ * Development of this chipset driver was funded
+ * by the nice folks at National Semiconductor.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <scsi/scsi_host.h>
+#include <linux/libata.h>
+
+#define DRV_NAME	"pata_sc1200"
+#define DRV_VERSION	"0.2.6"
+
+#define SC1200_REV_A	0x00
+#define SC1200_REV_B1	0x01
+#define SC1200_REV_B3	0x02
+#define SC1200_REV_C1	0x03
+#define SC1200_REV_D1	0x04
+
+/**
+ *	sc1200_clock	-	PCI clock
+ *
+ *	Return the PCI bus clocking for the SC1200 chipset configuration
+ *	in use. We return 0 for 33MHz 1 for 48MHz and 2 for 66Mhz
+ */
+
+static int sc1200_clock(void)
+{
+	/* Magic registers that give us the chipset data */
+	u8 chip_id = inb(0x903C);
+	u8 silicon_rev = inb(0x903D);
+	u16 pci_clock;
+
+	if (chip_id == 0x04 && silicon_rev < SC1200_REV_B1)
+		return 0;	/* 33 MHz mode */
+
+	/* Clock generator configuration 0x901E its 8/9 are the PCI clocking
+	   0/3 is 33Mhz 1 is 48 2 is 66 */
+
+	pci_clock = inw(0x901E);
+	pci_clock >>= 8;
+	pci_clock &= 0x03;
+	if (pci_clock == 3)
+		pci_clock = 0;
+	return pci_clock;
+}
+
+/**
+ *	sc1200_set_piomode		-	PIO setup
+ *	@ap: ATA interface
+ *	@adev: device on the interface
+ *
+ *	Set our PIO requirements. This is fairly simple on the SC1200
+ */
+
+static void sc1200_set_piomode(struct ata_port *ap, struct ata_device *adev)
+{
+	static const u32 pio_timings[4][5] = {
+		/* format0, 33Mhz */
+		{ 0x00009172, 0x00012171, 0x00020080, 0x00032010, 0x00040010 },
+		/* format1, 33Mhz */
+		{ 0xd1329172, 0x71212171, 0x30200080, 0x20102010, 0x00100010 },
+		/* format1, 48Mhz */
+		{ 0xfaa3f4f3, 0xc23232b2, 0x513101c1, 0x31213121, 0x10211021 },
+		/* format1, 66Mhz */
+		{ 0xfff4fff4, 0xf35353d3, 0x814102f1, 0x42314231, 0x11311131 }
+	};
+
+	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+	u32 format;
+	unsigned int reg = 0x40 + 0x10 * ap->port_no;
+	int mode = adev->pio_mode - XFER_PIO_0;
+
+	pci_read_config_dword(pdev, reg + 4, &format);
+	format >>= 31;
+	format += sc1200_clock();
+	pci_write_config_dword(pdev, reg + 8 * adev->devno,
+				pio_timings[format][mode]);
+}
+
+/**
+ *	sc1200_set_dmamode		-	DMA timing setup
+ *	@ap: ATA interface
+ *	@adev: Device being configured
+ *
+ *	We cannot mix MWDMA and UDMA without reloading timings each switch
+ *	master to slave.
+ */
+
+static void sc1200_set_dmamode(struct ata_port *ap, struct ata_device *adev)
+{
+	static const u32 udma_timing[3][3] = {
+		{ 0x00921250, 0x00911140, 0x00911030 },
+		{ 0x00932470, 0x00922260, 0x00922140 },
+		{ 0x009436A1, 0x00933481, 0x00923261 }
+	};
+
+	static const u32 mwdma_timing[3][3] = {
+		{ 0x00077771, 0x00012121, 0x00002020 },
+		{ 0x000BBBB2, 0x00024241, 0x00013131 },
+		{ 0x000FFFF3, 0x00035352, 0x00015151 }
+	};
+
+	int clock = sc1200_clock();
+	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+	unsigned int reg = 0x40 + 0x10 * ap->port_no;
+	int mode = adev->dma_mode;
+	u32 format;
+
+	if (mode >= XFER_UDMA_0)
+		format = udma_timing[clock][mode - XFER_UDMA_0];
+	else
+		format = mwdma_timing[clock][mode - XFER_MW_DMA_0];
+
+	if (adev->devno == 0) {
+		u32 timings;
+
+		pci_read_config_dword(pdev, reg + 4, &timings);
+		timings &= 0x80000000UL;
+		timings |= format;
+		pci_write_config_dword(pdev, reg + 4, timings);
+	} else
+		pci_write_config_dword(pdev, reg + 12, format);
+}
+
+/**
+ *	sc1200_qc_issue		-	command issue
+ *	@qc: command pending
+ *
+ *	Called when the libata layer is about to issue a command. We wrap
+ *	this interface so that we can load the correct ATA timings if
+ *	necessary.  Specifically we have a problem that there is only
+ *	one MWDMA/UDMA bit.
+ */
+
+static unsigned int sc1200_qc_issue(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	struct ata_device *adev = qc->dev;
+	struct ata_device *prev = ap->private_data;
+
+	/* See if the DMA settings could be wrong */
+	if (ata_dma_enabled(adev) && adev != prev && prev != NULL) {
+		/* Maybe, but do the channels match MWDMA/UDMA ? */
+		if ((ata_using_udma(adev) && !ata_using_udma(prev)) ||
+		    (ata_using_udma(prev) && !ata_using_udma(adev)))
+		    	/* Switch the mode bits */
+		    	sc1200_set_dmamode(ap, adev);
+	}
+
+	return ata_bmdma_qc_issue(qc);
+}
+
+/**
+ *	sc1200_qc_defer	-	implement serialization
+ *	@qc: command
+ *
+ *	Serialize command issue on this controller.
+ */
+
+static int sc1200_qc_defer(struct ata_queued_cmd *qc)
+{
+	struct ata_host *host = qc->ap->host;
+	struct ata_port *alt = host->ports[1 ^ qc->ap->port_no];
+	int rc;
+
+	/* First apply the usual rules */
+	rc = ata_std_qc_defer(qc);
+	if (rc != 0)
+		return rc;
+
+	/* Now apply serialization rules. Only allow a command if the
+	   other channel state machine is idle */
+	if (alt && alt->qc_active)
+		return	ATA_DEFER_PORT;
+	return 0;
+}
+
+static struct scsi_host_template sc1200_sht = {
+	ATA_BASE_SHT(DRV_NAME),
+	.sg_tablesize	= LIBATA_DUMB_MAX_PRD,
+	.dma_boundary	= ATA_DMA_BOUNDARY,
+};
+
+static struct ata_port_operations sc1200_port_ops = {
+	.inherits	= &ata_bmdma_port_ops,
+	.qc_prep 	= ata_bmdma_dumb_qc_prep,
+	.qc_issue	= sc1200_qc_issue,
+	.qc_defer	= sc1200_qc_defer,
+	.cable_detect	= ata_cable_40wire,
+	.set_piomode	= sc1200_set_piomode,
+	.set_dmamode	= sc1200_set_dmamode,
+};
+
+/**
+ *	sc1200_init_one		-	Initialise an SC1200
+ *	@dev: PCI device
+ *	@id: Entry in match table
+ *
+ *	Just throw the needed data at the libata helper and it does all
+ *	our work.
+ */
+
+static int sc1200_init_one(struct pci_dev *dev, const struct pci_device_id *id)
+{
+	static const struct ata_port_info info = {
+		.flags = ATA_FLAG_SLAVE_POSS,
+		.pio_mask = ATA_PIO4,
+		.mwdma_mask = ATA_MWDMA2,
+		.udma_mask = ATA_UDMA2,
+		.port_ops = &sc1200_port_ops
+	};
+	const struct ata_port_info *ppi[] = { &info, NULL };
+
+	return ata_pci_bmdma_init_one(dev, ppi, &sc1200_sht, NULL, 0);
+}
+
+static const struct pci_device_id sc1200[] = {
+	{ PCI_VDEVICE(NS, PCI_DEVICE_ID_NS_SCx200_IDE), },
+
+	{ },
+};
+
+static struct pci_driver sc1200_pci_driver = {
+	.name 		= DRV_NAME,
+	.id_table	= sc1200,
+	.probe 		= sc1200_init_one,
+	.remove		= ata_pci_remove_one,
+#ifdef CONFIG_PM_SLEEP
+	.suspend	= ata_pci_device_suspend,
+	.resume		= ata_pci_device_resume,
+#endif
+};
+
+module_pci_driver(sc1200_pci_driver);
+
+MODULE_AUTHOR("Alan Cox, Mark Lord");
+MODULE_DESCRIPTION("low-level driver for the NS/AMD SC1200");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, sc1200);
+MODULE_VERSION(DRV_VERSION);