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, 381 insertions, 0 deletions

diff --git a/drivers/parport/parport_sunbpp.c b/drivers/parport/parport_sunbpp.c
new file mode 100644
index 000000000..865fc41db
--- /dev/null
+++ b/drivers/parport/parport_sunbpp.c
@@ -0,0 +1,381 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* parport_sunbpp.c: Parallel-port routines for SBUS
+ * 
+ * Author: Derrick J. Brashear <shadow@dementia.org>
+ *
+ * based on work by:
+ *          Phil Blundell <philb@gnu.org>
+ *          Tim Waugh <tim@cyberelk.demon.co.uk>
+ *	    Jose Renau <renau@acm.org>
+ *          David Campbell <campbell@tirian.che.curtin.edu.au>
+ *          Grant Guenther <grant@torque.net>
+ *          Eddie C. Dost <ecd@skynet.be>
+ *          Stephen Williams (steve@icarus.com)
+ *          Gus Baldauf (gbaldauf@ix.netcom.com)
+ *          Peter Zaitcev
+ *          Tom Dyas
+ *
+ * Updated to new SBUS device framework: David S. Miller <davem@davemloft.net>
+ * 
+ */
+
+#include <linux/string.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+#include <linux/parport.h>
+
+#include <asm/ptrace.h>
+#include <linux/interrupt.h>
+
+#include <asm/io.h>
+#include <asm/oplib.h>           /* OpenProm Library */
+#include <asm/dma.h>             /* BPP uses LSI 64854 for DMA */
+#include <asm/irq.h>
+#include <asm/sunbpp.h>
+
+#undef __SUNBPP_DEBUG
+#ifdef __SUNBPP_DEBUG
+#define dprintk(x) printk x
+#else
+#define dprintk(x)
+#endif
+
+static void parport_sunbpp_disable_irq(struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	u32 tmp;
+
+	tmp = sbus_readl(&regs->p_csr);
+	tmp &= ~DMA_INT_ENAB;
+	sbus_writel(tmp, &regs->p_csr);
+}
+
+static void parport_sunbpp_enable_irq(struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	u32 tmp;
+
+	tmp = sbus_readl(&regs->p_csr);
+	tmp |= DMA_INT_ENAB;
+	sbus_writel(tmp, &regs->p_csr);
+}
+
+static void parport_sunbpp_write_data(struct parport *p, unsigned char d)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+
+	sbus_writeb(d, &regs->p_dr);
+	dprintk((KERN_DEBUG "wrote 0x%x\n", d));
+}
+
+static unsigned char parport_sunbpp_read_data(struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+
+	return sbus_readb(&regs->p_dr);
+}
+
+static unsigned char status_sunbpp_to_pc(struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	unsigned char bits = 0;
+	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+	unsigned char value_ir = sbus_readb(&regs->p_ir);
+
+	if (!(value_ir & P_IR_ERR))
+		bits |= PARPORT_STATUS_ERROR;
+	if (!(value_ir & P_IR_SLCT))
+		bits |= PARPORT_STATUS_SELECT;
+	if (!(value_ir & P_IR_PE))
+		bits |= PARPORT_STATUS_PAPEROUT;
+	if (value_tcr & P_TCR_ACK)
+		bits |= PARPORT_STATUS_ACK;
+	if (!(value_tcr & P_TCR_BUSY))
+		bits |= PARPORT_STATUS_BUSY;
+
+	dprintk((KERN_DEBUG "tcr 0x%x ir 0x%x\n", value_tcr, value_ir));
+	dprintk((KERN_DEBUG "read status 0x%x\n", bits));
+	return bits;
+}
+
+static unsigned char control_sunbpp_to_pc(struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	unsigned char bits = 0;
+	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+	unsigned char value_or = sbus_readb(&regs->p_or);
+
+	if (!(value_tcr & P_TCR_DS))
+		bits |= PARPORT_CONTROL_STROBE;
+	if (!(value_or & P_OR_AFXN))
+		bits |= PARPORT_CONTROL_AUTOFD;
+	if (!(value_or & P_OR_INIT))
+		bits |= PARPORT_CONTROL_INIT;
+	if (value_or & P_OR_SLCT_IN)
+		bits |= PARPORT_CONTROL_SELECT;
+
+	dprintk((KERN_DEBUG "tcr 0x%x or 0x%x\n", value_tcr, value_or));
+	dprintk((KERN_DEBUG "read control 0x%x\n", bits));
+	return bits;
+}
+
+static unsigned char parport_sunbpp_read_control(struct parport *p)
+{
+	return control_sunbpp_to_pc(p);
+}
+
+static unsigned char parport_sunbpp_frob_control(struct parport *p,
+						 unsigned char mask,
+						 unsigned char val)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+	unsigned char value_or = sbus_readb(&regs->p_or);
+
+	dprintk((KERN_DEBUG "frob1: tcr 0x%x or 0x%x\n",
+		 value_tcr, value_or));
+	if (mask & PARPORT_CONTROL_STROBE) {
+		if (val & PARPORT_CONTROL_STROBE) {
+			value_tcr &= ~P_TCR_DS;
+		} else {
+			value_tcr |= P_TCR_DS;
+		}
+	}
+	if (mask & PARPORT_CONTROL_AUTOFD) {
+		if (val & PARPORT_CONTROL_AUTOFD) {
+			value_or &= ~P_OR_AFXN;
+		} else {
+			value_or |= P_OR_AFXN;
+		}
+	}
+	if (mask & PARPORT_CONTROL_INIT) {
+		if (val & PARPORT_CONTROL_INIT) {
+			value_or &= ~P_OR_INIT;
+		} else {
+			value_or |= P_OR_INIT;
+		}
+	}
+	if (mask & PARPORT_CONTROL_SELECT) {
+		if (val & PARPORT_CONTROL_SELECT) {
+			value_or |= P_OR_SLCT_IN;
+		} else {
+			value_or &= ~P_OR_SLCT_IN;
+		}
+	}
+
+	sbus_writeb(value_or, &regs->p_or);
+	sbus_writeb(value_tcr, &regs->p_tcr);
+	dprintk((KERN_DEBUG "frob2: tcr 0x%x or 0x%x\n",
+		 value_tcr, value_or));
+	return parport_sunbpp_read_control(p);
+}
+
+static void parport_sunbpp_write_control(struct parport *p, unsigned char d)
+{
+	const unsigned char wm = (PARPORT_CONTROL_STROBE |
+				  PARPORT_CONTROL_AUTOFD |
+				  PARPORT_CONTROL_INIT |
+				  PARPORT_CONTROL_SELECT);
+
+	parport_sunbpp_frob_control (p, wm, d & wm);
+}
+
+static unsigned char parport_sunbpp_read_status(struct parport *p)
+{
+	return status_sunbpp_to_pc(p);
+}
+
+static void parport_sunbpp_data_forward (struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+
+	dprintk((KERN_DEBUG "forward\n"));
+	value_tcr &= ~P_TCR_DIR;
+	sbus_writeb(value_tcr, &regs->p_tcr);
+}
+
+static void parport_sunbpp_data_reverse (struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	u8 val = sbus_readb(&regs->p_tcr);
+
+	dprintk((KERN_DEBUG "reverse\n"));
+	val |= P_TCR_DIR;
+	sbus_writeb(val, &regs->p_tcr);
+}
+
+static void parport_sunbpp_init_state(struct pardevice *dev, struct parport_state *s)
+{
+	s->u.pc.ctr = 0xc;
+	s->u.pc.ecr = 0x0;
+}
+
+static void parport_sunbpp_save_state(struct parport *p, struct parport_state *s)
+{
+	s->u.pc.ctr = parport_sunbpp_read_control(p);
+}
+
+static void parport_sunbpp_restore_state(struct parport *p, struct parport_state *s)
+{
+	parport_sunbpp_write_control(p, s->u.pc.ctr);
+}
+
+static struct parport_operations parport_sunbpp_ops = 
+{
+	.write_data	= parport_sunbpp_write_data,
+	.read_data	= parport_sunbpp_read_data,
+
+	.write_control	= parport_sunbpp_write_control,
+	.read_control	= parport_sunbpp_read_control,
+	.frob_control	= parport_sunbpp_frob_control,
+
+	.read_status	= parport_sunbpp_read_status,
+
+	.enable_irq	= parport_sunbpp_enable_irq,
+	.disable_irq	= parport_sunbpp_disable_irq,
+
+	.data_forward	= parport_sunbpp_data_forward,
+	.data_reverse	= parport_sunbpp_data_reverse,
+
+	.init_state	= parport_sunbpp_init_state,
+	.save_state	= parport_sunbpp_save_state,
+	.restore_state	= parport_sunbpp_restore_state,
+
+	.epp_write_data	= parport_ieee1284_epp_write_data,
+	.epp_read_data	= parport_ieee1284_epp_read_data,
+	.epp_write_addr	= parport_ieee1284_epp_write_addr,
+	.epp_read_addr	= parport_ieee1284_epp_read_addr,
+
+	.ecp_write_data	= parport_ieee1284_ecp_write_data,
+	.ecp_read_data	= parport_ieee1284_ecp_read_data,
+	.ecp_write_addr	= parport_ieee1284_ecp_write_addr,
+
+	.compat_write_data	= parport_ieee1284_write_compat,
+	.nibble_read_data	= parport_ieee1284_read_nibble,
+	.byte_read_data		= parport_ieee1284_read_byte,
+
+	.owner		= THIS_MODULE,
+};
+
+static int bpp_probe(struct platform_device *op)
+{
+	struct parport_operations *ops;
+	struct bpp_regs __iomem *regs;
+	int irq, dma, err = 0, size;
+	unsigned char value_tcr;
+	void __iomem *base;
+	struct parport *p;
+
+	irq = op->archdata.irqs[0];
+	base = of_ioremap(&op->resource[0], 0,
+			  resource_size(&op->resource[0]),
+			  "sunbpp");
+	if (!base)
+		return -ENODEV;
+
+	size = resource_size(&op->resource[0]);
+	dma = PARPORT_DMA_NONE;
+
+	ops = kmemdup(&parport_sunbpp_ops, sizeof(struct parport_operations),
+		      GFP_KERNEL);
+	if (!ops) {
+		err = -ENOMEM;
+		goto out_unmap;
+	}
+
+	dprintk(("register_port\n"));
+	if (!(p = parport_register_port((unsigned long)base, irq, dma, ops))) {
+		err = -ENOMEM;
+		goto out_free_ops;
+	}
+
+	p->size = size;
+	p->dev = &op->dev;
+
+	if ((err = request_irq(p->irq, parport_irq_handler,
+			       IRQF_SHARED, p->name, p)) != 0) {
+		goto out_put_port;
+	}
+
+	parport_sunbpp_enable_irq(p);
+
+	regs = (struct bpp_regs __iomem *)p->base;
+
+	value_tcr = sbus_readb(&regs->p_tcr);
+	value_tcr &= ~P_TCR_DIR;
+	sbus_writeb(value_tcr, &regs->p_tcr);
+
+	pr_info("%s: sunbpp at 0x%lx\n", p->name, p->base);
+
+	dev_set_drvdata(&op->dev, p);
+
+	parport_announce_port(p);
+
+	return 0;
+
+out_put_port:
+	parport_put_port(p);
+
+out_free_ops:
+	kfree(ops);
+
+out_unmap:
+	of_iounmap(&op->resource[0], base, size);
+
+	return err;
+}
+
+static int bpp_remove(struct platform_device *op)
+{
+	struct parport *p = dev_get_drvdata(&op->dev);
+	struct parport_operations *ops = p->ops;
+
+	parport_remove_port(p);
+
+	if (p->irq != PARPORT_IRQ_NONE) {
+		parport_sunbpp_disable_irq(p);
+		free_irq(p->irq, p);
+	}
+
+	of_iounmap(&op->resource[0], (void __iomem *) p->base, p->size);
+	parport_put_port(p);
+	kfree(ops);
+
+	dev_set_drvdata(&op->dev, NULL);
+
+	return 0;
+}
+
+static const struct of_device_id bpp_match[] = {
+	{
+		.name = "SUNW,bpp",
+	},
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, bpp_match);
+
+static struct platform_driver bpp_sbus_driver = {
+	.driver = {
+		.name = "bpp",
+		.of_match_table = bpp_match,
+	},
+	.probe		= bpp_probe,
+	.remove		= bpp_remove,
+};
+
+module_platform_driver(bpp_sbus_driver);
+
+MODULE_AUTHOR("Derrick J Brashear");
+MODULE_DESCRIPTION("Parport Driver for Sparc bidirectional Port");
+MODULE_VERSION("2.0");
+MODULE_LICENSE("GPL");