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/scsi/sgiwd93.c b/drivers/scsi/sgiwd93.c
new file mode 100644
index 000000000..57d5dff62
--- /dev/null
+++ b/drivers/scsi/sgiwd93.c
@@ -0,0 +1,332 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1999 Andrew R. Baker (andrewb@uab.edu)
+ * Copyright (C) 2001 Florian Lohoff (flo@rfc822.org)
+ * Copyright (C) 2003, 07 Ralf Baechle (ralf@linux-mips.org)
+ * 
+ * (In all truth, Jed Schimmel wrote all this code.)
+ */
+
+#undef DEBUG
+
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/gfp.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+
+#include <asm/sgi/hpc3.h>
+#include <asm/sgi/ip22.h>
+#include <asm/sgi/wd.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_eh.h>
+#include <scsi/scsi_tcq.h>
+#include "wd33c93.h"
+
+struct ip22_hostdata {
+	struct WD33C93_hostdata wh;
+	dma_addr_t dma;
+	void *cpu;
+	struct device *dev;
+};
+
+#define host_to_hostdata(host) ((struct ip22_hostdata *)((host)->hostdata))
+
+struct hpc_chunk {
+	struct hpc_dma_desc desc;
+	u32 _padding;	/* align to quadword boundary */
+};
+
+/* space for hpc dma descriptors */
+#define HPC_DMA_SIZE   PAGE_SIZE
+
+#define DMA_DIR(d)   ((d == DATA_OUT_DIR) ? DMA_TO_DEVICE : DMA_FROM_DEVICE)
+
+static irqreturn_t sgiwd93_intr(int irq, void *dev_id)
+{
+	struct Scsi_Host * host = dev_id;
+	unsigned long flags;
+
+	spin_lock_irqsave(host->host_lock, flags);
+	wd33c93_intr(host);
+	spin_unlock_irqrestore(host->host_lock, flags);
+
+	return IRQ_HANDLED;
+}
+
+static inline
+void fill_hpc_entries(struct ip22_hostdata *hd, struct scsi_cmnd *cmd, int din)
+{
+	struct scsi_pointer *scsi_pointer = WD33C93_scsi_pointer(cmd);
+	unsigned long len = scsi_pointer->this_residual;
+	void *addr = scsi_pointer->ptr;
+	dma_addr_t physaddr;
+	unsigned long count;
+	struct hpc_chunk *hcp;
+
+	physaddr = dma_map_single(hd->dev, addr, len, DMA_DIR(din));
+	scsi_pointer->dma_handle = physaddr;
+	hcp = hd->cpu;
+
+	while (len) {
+		/*
+		 * even cntinfo could be up to 16383, without
+		 * magic only 8192 works correctly
+		 */
+		count = len > 8192 ? 8192 : len;
+		hcp->desc.pbuf = physaddr;
+		hcp->desc.cntinfo = count;
+		hcp++;
+		len -= count;
+		physaddr += count;
+	}
+
+	/*
+	 * To make sure, if we trip an HPC bug, that we transfer every single
+	 * byte, we tag on an extra zero length dma descriptor at the end of
+	 * the chain.
+	 */
+	hcp->desc.pbuf = 0;
+	hcp->desc.cntinfo = HPCDMA_EOX;
+	dma_sync_single_for_device(hd->dev, hd->dma,
+		       (unsigned long)(hcp + 1) - (unsigned long)hd->cpu,
+		       DMA_TO_DEVICE);
+}
+
+static int dma_setup(struct scsi_cmnd *cmd, int datainp)
+{
+	struct scsi_pointer *scsi_pointer = WD33C93_scsi_pointer(cmd);
+	struct ip22_hostdata *hdata = host_to_hostdata(cmd->device->host);
+	struct hpc3_scsiregs *hregs =
+		(struct hpc3_scsiregs *) cmd->device->host->base;
+
+	pr_debug("dma_setup: datainp<%d> hcp<%p> ", datainp, hdata->cpu);
+
+	hdata->wh.dma_dir = datainp;
+
+	/*
+	 * wd33c93 shouldn't pass us bogus dma_setups, but it does:-(  The
+	 * other wd33c93 drivers deal with it the same way (which isn't that
+	 * obvious).  IMHO a better fix would be, not to do these dma setups
+	 * in the first place.
+	 */
+	if (scsi_pointer->ptr == NULL || scsi_pointer->this_residual == 0)
+		return 1;
+
+	fill_hpc_entries(hdata, cmd, datainp);
+
+	pr_debug(" HPCGO\n");
+
+	/* Start up the HPC. */
+	hregs->ndptr = hdata->dma;
+	if (datainp)
+		hregs->ctrl = HPC3_SCTRL_ACTIVE;
+	else
+		hregs->ctrl = HPC3_SCTRL_ACTIVE | HPC3_SCTRL_DIR;
+
+	return 0;
+}
+
+static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
+		     int status)
+{
+	struct scsi_pointer *scsi_pointer = WD33C93_scsi_pointer(SCpnt);
+	struct ip22_hostdata *hdata = host_to_hostdata(instance);
+	struct hpc3_scsiregs *hregs;
+
+	if (!SCpnt)
+		return;
+
+	if (scsi_pointer->ptr == NULL || scsi_pointer->this_residual == 0)
+		return;
+
+	hregs = (struct hpc3_scsiregs *) SCpnt->device->host->base;
+
+	pr_debug("dma_stop: status<%d> ", status);
+
+	/* First stop the HPC and flush it's FIFO. */
+	if (hdata->wh.dma_dir) {
+		hregs->ctrl |= HPC3_SCTRL_FLUSH;
+		while (hregs->ctrl & HPC3_SCTRL_ACTIVE)
+			barrier();
+	}
+	hregs->ctrl = 0;
+	dma_unmap_single(hdata->dev, scsi_pointer->dma_handle,
+			 scsi_pointer->this_residual,
+			 DMA_DIR(hdata->wh.dma_dir));
+
+	pr_debug("\n");
+}
+
+void sgiwd93_reset(unsigned long base)
+{
+	struct hpc3_scsiregs *hregs = (struct hpc3_scsiregs *) base;
+
+	hregs->ctrl = HPC3_SCTRL_CRESET;
+	udelay(50);
+	hregs->ctrl = 0;
+}
+EXPORT_SYMBOL_GPL(sgiwd93_reset);
+
+static inline void init_hpc_chain(struct ip22_hostdata *hdata)
+{
+	struct hpc_chunk *hcp = (struct hpc_chunk *)hdata->cpu;
+	dma_addr_t dma = hdata->dma;
+	unsigned long start, end;
+
+	start = (unsigned long) hcp;
+	end = start + HPC_DMA_SIZE;
+	while (start < end) {
+		hcp->desc.pnext = (u32) (dma + sizeof(struct hpc_chunk));
+		hcp->desc.cntinfo = HPCDMA_EOX;
+		hcp++;
+		dma += sizeof(struct hpc_chunk);
+		start += sizeof(struct hpc_chunk);
+	}
+	hcp--;
+	hcp->desc.pnext = hdata->dma;
+}
+
+/*
+ * Kludge alert - the SCSI code calls the abort and reset method with int
+ * arguments not with pointers.  So this is going to blow up beautyfully
+ * on 64-bit systems with memory outside the compat address spaces.
+ */
+static struct scsi_host_template sgiwd93_template = {
+	.module			= THIS_MODULE,
+	.proc_name		= "SGIWD93",
+	.name			= "SGI WD93",
+	.queuecommand		= wd33c93_queuecommand,
+	.eh_abort_handler	= wd33c93_abort,
+	.eh_host_reset_handler	= wd33c93_host_reset,
+	.can_queue		= 16,
+	.this_id		= 7,
+	.sg_tablesize		= SG_ALL,
+	.cmd_per_lun		= 8,
+	.dma_boundary		= PAGE_SIZE - 1,
+	.cmd_size		= sizeof(struct scsi_pointer),
+};
+
+static int sgiwd93_probe(struct platform_device *pdev)
+{
+	struct sgiwd93_platform_data *pd = pdev->dev.platform_data;
+	unsigned char *wdregs = pd->wdregs;
+	struct hpc3_scsiregs *hregs = pd->hregs;
+	struct ip22_hostdata *hdata;
+	struct Scsi_Host *host;
+	wd33c93_regs regs;
+	unsigned int unit = pd->unit;
+	unsigned int irq = pd->irq;
+	int err;
+
+	host = scsi_host_alloc(&sgiwd93_template, sizeof(struct ip22_hostdata));
+	if (!host) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	host->base = (unsigned long) hregs;
+	host->irq = irq;
+
+	hdata = host_to_hostdata(host);
+	hdata->dev = &pdev->dev;
+	hdata->cpu = dma_alloc_noncoherent(&pdev->dev, HPC_DMA_SIZE,
+				&hdata->dma, DMA_TO_DEVICE, GFP_KERNEL);
+	if (!hdata->cpu) {
+		printk(KERN_WARNING "sgiwd93: Could not allocate memory for "
+		       "host %d buffer.\n", unit);
+		err = -ENOMEM;
+		goto out_put;
+	}
+
+	init_hpc_chain(hdata);
+
+	regs.SASR = wdregs + 3;
+	regs.SCMD = wdregs + 7;
+
+	hdata->wh.no_sync = 0;
+	hdata->wh.fast = 1;
+	hdata->wh.dma_mode = CTRL_BURST;
+
+	wd33c93_init(host, regs, dma_setup, dma_stop, WD33C93_FS_MHZ(20));
+
+	err = request_irq(irq, sgiwd93_intr, 0, "SGI WD93", host);
+	if (err) {
+		printk(KERN_WARNING "sgiwd93: Could not register irq %d "
+		       "for host %d.\n", irq, unit);
+		goto out_free;
+	}
+
+	platform_set_drvdata(pdev, host);
+
+	err = scsi_add_host(host, NULL);
+	if (err)
+		goto out_irq;
+
+	scsi_scan_host(host);
+
+	return 0;
+
+out_irq:
+	free_irq(irq, host);
+out_free:
+	dma_free_noncoherent(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma,
+			DMA_TO_DEVICE);
+out_put:
+	scsi_host_put(host);
+out:
+
+	return err;
+}
+
+static int sgiwd93_remove(struct platform_device *pdev)
+{
+	struct Scsi_Host *host = platform_get_drvdata(pdev);
+	struct ip22_hostdata *hdata = (struct ip22_hostdata *) host->hostdata;
+	struct sgiwd93_platform_data *pd = pdev->dev.platform_data;
+
+	scsi_remove_host(host);
+	free_irq(pd->irq, host);
+	dma_free_noncoherent(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma,
+			DMA_TO_DEVICE);
+	scsi_host_put(host);
+	return 0;
+}
+
+static struct platform_driver sgiwd93_driver = {
+	.probe  = sgiwd93_probe,
+	.remove = sgiwd93_remove,
+	.driver = {
+		.name   = "sgiwd93",
+	}
+};
+
+static int __init sgiwd93_module_init(void)
+{
+	return platform_driver_register(&sgiwd93_driver);
+}
+
+static void __exit sgiwd93_module_exit(void)
+{
+	return platform_driver_unregister(&sgiwd93_driver);
+}
+
+module_init(sgiwd93_module_init);
+module_exit(sgiwd93_module_exit);
+
+MODULE_DESCRIPTION("SGI WD33C93 driver");
+MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:sgiwd93");