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, 363 insertions, 0 deletions

diff --git a/drivers/scsi/arm/arxescsi.c b/drivers/scsi/arm/arxescsi.c
new file mode 100644
index 000000000..2527b542b
--- /dev/null
+++ b/drivers/scsi/arm/arxescsi.c
@@ -0,0 +1,363 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * linux/drivers/scsi/arm/arxescsi.c
+ *
+ * Copyright (C) 1997-2000 Russell King, Stefan Hanske
+ *
+ * This driver is based on experimentation.  Hence, it may have made
+ * assumptions about the particular card that I have available, and
+ * may not be reliable!
+ *
+ * Changelog:
+ *  30-08-1997	RMK	0.0.0	Created, READONLY version as cumana_2.c
+ *  22-01-1998	RMK	0.0.1	Updated to 2.1.80
+ *  15-04-1998	RMK	0.0.1	Only do PIO if FAS216 will allow it.
+ *  11-06-1998 	SH	0.0.2   Changed to support ARXE 16-bit SCSI card
+ *				enabled writing
+ *  01-01-2000	SH	0.1.0   Added *real* pseudo dma writing
+ *				(arxescsi_pseudo_dma_write)
+ *  02-04-2000	RMK	0.1.1	Updated for new error handling code.
+ *  22-10-2000  SH		Updated for new registering scheme.
+ */
+#include <linux/module.h>
+#include <linux/blkdev.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/proc_fs.h>
+#include <linux/unistd.h>
+#include <linux/stat.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+
+#include <asm/dma.h>
+#include <asm/io.h>
+#include <asm/ecard.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_eh.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_tcq.h>
+#include "fas216.h"
+
+struct arxescsi_info {
+	FAS216_Info		info;
+	struct expansion_card	*ec;
+	void __iomem		*base;
+};
+
+#define DMADATA_OFFSET	(0x200)
+
+#define DMASTAT_OFFSET	(0x600)
+#define DMASTAT_DRQ	(1 << 0)
+
+#define CSTATUS_IRQ	(1 << 0)
+
+#define VERSION "1.10 (23/01/2003 2.5.57)"
+
+/*
+ * Function: int arxescsi_dma_setup(host, SCpnt, direction, min_type)
+ * Purpose : initialises DMA/PIO
+ * Params  : host      - host
+ *	     SCpnt     - command
+ *	     direction - DMA on to/off of card
+ *	     min_type  - minimum DMA support that we must have for this transfer
+ * Returns : 0 if we should not set CMD_WITHDMA for transfer info command
+ */
+static fasdmatype_t
+arxescsi_dma_setup(struct Scsi_Host *host, struct scsi_pointer *SCp,
+		       fasdmadir_t direction, fasdmatype_t min_type)
+{
+	/*
+	 * We don't do real DMA
+	 */
+	return fasdma_pseudo;
+}
+
+static void arxescsi_pseudo_dma_write(unsigned char *addr, void __iomem *base)
+{
+       __asm__ __volatile__(
+       "               stmdb   sp!, {r0-r12}\n"
+       "               mov     r3, %0\n"
+       "               mov     r1, %1\n"
+       "               add     r2, r1, #512\n"
+       "               mov     r4, #256\n"
+       ".loop_1:       ldmia   r3!, {r6, r8, r10, r12}\n"
+       "               mov     r5, r6, lsl #16\n"
+       "               mov     r7, r8, lsl #16\n"
+       ".loop_2:       ldrb    r0, [r1, #1536]\n"
+       "               tst     r0, #1\n"
+       "               beq     .loop_2\n"
+       "               stmia   r2, {r5-r8}\n\t"
+       "               mov     r9, r10, lsl #16\n"
+       "               mov     r11, r12, lsl #16\n"
+       ".loop_3:       ldrb    r0, [r1, #1536]\n"
+       "               tst     r0, #1\n"
+       "               beq     .loop_3\n"
+       "               stmia   r2, {r9-r12}\n"
+       "               subs    r4, r4, #16\n"
+       "               bne     .loop_1\n"
+       "               ldmia   sp!, {r0-r12}\n"
+       :
+       : "r" (addr), "r" (base));
+}
+
+/*
+ * Function: int arxescsi_dma_pseudo(host, SCpnt, direction, transfer)
+ * Purpose : handles pseudo DMA
+ * Params  : host      - host
+ *	     SCpnt     - command
+ *	     direction - DMA on to/off of card
+ *	     transfer  - minimum number of bytes we expect to transfer
+ */
+static void
+arxescsi_dma_pseudo(struct Scsi_Host *host, struct scsi_pointer *SCp,
+		    fasdmadir_t direction, int transfer)
+{
+	struct arxescsi_info *info = (struct arxescsi_info *)host->hostdata;
+	unsigned int length, error = 0;
+	void __iomem *base = info->info.scsi.io_base;
+	unsigned char *addr;
+
+	length = SCp->this_residual;
+	addr = SCp->ptr;
+
+	if (direction == DMA_OUT) {
+		unsigned int word;
+		while (length > 256) {
+			if (readb(base + 0x80) & STAT_INT) {
+				error = 1;
+				break;
+			}
+			arxescsi_pseudo_dma_write(addr, base);
+			addr += 256;
+			length -= 256;
+		}
+
+		if (!error)
+			while (length > 0) {
+				if (readb(base + 0x80) & STAT_INT)
+					break;
+	 
+				if (!(readb(base + DMASTAT_OFFSET) & DMASTAT_DRQ))
+					continue;
+
+				word = *addr | *(addr + 1) << 8;
+
+				writew(word, base + DMADATA_OFFSET);
+				if (length > 1) {
+					addr += 2;
+					length -= 2;
+				} else {
+					addr += 1;
+					length -= 1;
+				}
+			}
+	}
+	else {
+		if (transfer && (transfer & 255)) {
+			while (length >= 256) {
+				if (readb(base + 0x80) & STAT_INT) {
+					error = 1;
+					break;
+				}
+	    
+				if (!(readb(base + DMASTAT_OFFSET) & DMASTAT_DRQ))
+					continue;
+
+				readsw(base + DMADATA_OFFSET, addr, 256 >> 1);
+				addr += 256;
+				length -= 256;
+			}
+		}
+
+		if (!(error))
+			while (length > 0) {
+				unsigned long word;
+
+				if (readb(base + 0x80) & STAT_INT)
+					break;
+
+				if (!(readb(base + DMASTAT_OFFSET) & DMASTAT_DRQ))
+					continue;
+
+				word = readw(base + DMADATA_OFFSET);
+				*addr++ = word;
+				if (--length > 0) {
+					*addr++ = word >> 8;
+					length --;
+				}
+			}
+	}
+}
+
+/*
+ * Function: int arxescsi_dma_stop(host, SCpnt)
+ * Purpose : stops DMA/PIO
+ * Params  : host  - host
+ *	     SCpnt - command
+ */
+static void arxescsi_dma_stop(struct Scsi_Host *host, struct scsi_pointer *SCp)
+{
+	/*
+	 * no DMA to stop
+	 */
+}
+
+/*
+ * Function: const char *arxescsi_info(struct Scsi_Host * host)
+ * Purpose : returns a descriptive string about this interface,
+ * Params  : host - driver host structure to return info for.
+ * Returns : pointer to a static buffer containing null terminated string.
+ */
+static const char *arxescsi_info(struct Scsi_Host *host)
+{
+	struct arxescsi_info *info = (struct arxescsi_info *)host->hostdata;
+	static char string[150];
+
+	sprintf(string, "%s (%s) in slot %d v%s",
+		host->hostt->name, info->info.scsi.type, info->ec->slot_no,
+		VERSION);
+
+	return string;
+}
+
+static int
+arxescsi_show_info(struct seq_file *m, struct Scsi_Host *host)
+{
+	struct arxescsi_info *info;
+	info = (struct arxescsi_info *)host->hostdata;
+
+	seq_printf(m, "ARXE 16-bit SCSI driver v%s\n", VERSION);
+	fas216_print_host(&info->info, m);
+	fas216_print_stats(&info->info, m);
+	fas216_print_devices(&info->info, m);
+	return 0;
+}
+
+static struct scsi_host_template arxescsi_template = {
+	.show_info			= arxescsi_show_info,
+	.name				= "ARXE SCSI card",
+	.info				= arxescsi_info,
+	.queuecommand			= fas216_noqueue_command,
+	.eh_host_reset_handler		= fas216_eh_host_reset,
+	.eh_bus_reset_handler		= fas216_eh_bus_reset,
+	.eh_device_reset_handler	= fas216_eh_device_reset,
+	.eh_abort_handler		= fas216_eh_abort,
+	.cmd_size			= sizeof(struct fas216_cmd_priv),
+	.can_queue			= 0,
+	.this_id			= 7,
+	.sg_tablesize			= SG_ALL,
+	.dma_boundary			= PAGE_SIZE - 1,
+	.proc_name			= "arxescsi",
+};
+
+static int arxescsi_probe(struct expansion_card *ec, const struct ecard_id *id)
+{
+	struct Scsi_Host *host;
+	struct arxescsi_info *info;
+	void __iomem *base;
+	int ret;
+
+	ret = ecard_request_resources(ec);
+	if (ret)
+		goto out;
+
+	base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
+	if (!base) {
+		ret = -ENOMEM;
+		goto out_region;
+	}
+
+	host = scsi_host_alloc(&arxescsi_template, sizeof(struct arxescsi_info));
+	if (!host) {
+		ret = -ENOMEM;
+		goto out_region;
+	}
+
+	info = (struct arxescsi_info *)host->hostdata;
+	info->ec = ec;
+	info->base = base;
+
+	info->info.scsi.io_base		= base + 0x2000;
+	info->info.scsi.irq		= 0;
+	info->info.scsi.dma		= NO_DMA;
+	info->info.scsi.io_shift	= 5;
+	info->info.ifcfg.clockrate	= 24; /* MHz */
+	info->info.ifcfg.select_timeout = 255;
+	info->info.ifcfg.asyncperiod	= 200; /* ns */
+	info->info.ifcfg.sync_max_depth	= 0;
+	info->info.ifcfg.cntl3		= CNTL3_FASTSCSI | CNTL3_FASTCLK;
+	info->info.ifcfg.disconnect_ok	= 0;
+	info->info.ifcfg.wide_max_size	= 0;
+	info->info.ifcfg.capabilities	= FASCAP_PSEUDODMA;
+	info->info.dma.setup		= arxescsi_dma_setup;
+	info->info.dma.pseudo		= arxescsi_dma_pseudo;
+	info->info.dma.stop		= arxescsi_dma_stop;
+		
+	ec->irqaddr = base;
+	ec->irqmask = CSTATUS_IRQ;
+
+	ret = fas216_init(host);
+	if (ret)
+		goto out_unregister;
+
+	ret = fas216_add(host, &ec->dev);
+	if (ret == 0)
+		goto out;
+
+	fas216_release(host);
+ out_unregister:
+	scsi_host_put(host);
+ out_region:
+	ecard_release_resources(ec);
+ out:
+	return ret;
+}
+
+static void arxescsi_remove(struct expansion_card *ec)
+{
+	struct Scsi_Host *host = ecard_get_drvdata(ec);
+
+	ecard_set_drvdata(ec, NULL);
+	fas216_remove(host);
+
+	fas216_release(host);
+	scsi_host_put(host);
+	ecard_release_resources(ec);
+}
+
+static const struct ecard_id arxescsi_cids[] = {
+	{ MANU_ARXE, PROD_ARXE_SCSI },
+	{ 0xffff, 0xffff },
+};
+
+static struct ecard_driver arxescsi_driver = {
+	.probe		= arxescsi_probe,
+	.remove		= arxescsi_remove,
+	.id_table	= arxescsi_cids,
+	.drv = {
+		.name		= "arxescsi",
+	},
+};
+
+static int __init init_arxe_scsi_driver(void)
+{
+	return ecard_register_driver(&arxescsi_driver);
+}
+
+static void __exit exit_arxe_scsi_driver(void)
+{
+	ecard_remove_driver(&arxescsi_driver);
+}
+
+module_init(init_arxe_scsi_driver);
+module_exit(exit_arxe_scsi_driver);
+
+MODULE_AUTHOR("Stefan Hanske");
+MODULE_DESCRIPTION("ARXESCSI driver for Acorn machines");
+MODULE_LICENSE("GPL");
+