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, 623 insertions, 0 deletions

diff --git a/drivers/parport/procfs.c b/drivers/parport/procfs.c
new file mode 100644
index 000000000..d740eba3c
--- /dev/null
+++ b/drivers/parport/procfs.c
@@ -0,0 +1,623 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Sysctl interface for parport devices.
+ * 
+ * Authors: David Campbell
+ *          Tim Waugh <tim@cyberelk.demon.co.uk>
+ *          Philip Blundell <philb@gnu.org>
+ *          Andrea Arcangeli
+ *          Riccardo Facchetti <fizban@tin.it>
+ *
+ * based on work by Grant Guenther <grant@torque.net>
+ *              and Philip Blundell
+ *
+ * Cleaned up include files - Russell King <linux@arm.uk.linux.org>
+ */
+
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/parport.h>
+#include <linux/ctype.h>
+#include <linux/sysctl.h>
+#include <linux/device.h>
+
+#include <linux/uaccess.h>
+
+#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
+
+#define PARPORT_MIN_TIMESLICE_VALUE 1ul 
+#define PARPORT_MAX_TIMESLICE_VALUE ((unsigned long) HZ)
+#define PARPORT_MIN_SPINTIME_VALUE 1
+#define PARPORT_MAX_SPINTIME_VALUE 1000
+
+static int do_active_device(struct ctl_table *table, int write,
+		      void *result, size_t *lenp, loff_t *ppos)
+{
+	struct parport *port = (struct parport *)table->extra1;
+	char buffer[256];
+	struct pardevice *dev;
+	int len = 0;
+
+	if (write)		/* can't happen anyway */
+		return -EACCES;
+
+	if (*ppos) {
+		*lenp = 0;
+		return 0;
+	}
+	
+	for (dev = port->devices; dev ; dev = dev->next) {
+		if(dev == port->cad) {
+			len += sprintf(buffer, "%s\n", dev->name);
+		}
+	}
+
+	if(!len) {
+		len += sprintf(buffer, "%s\n", "none");
+	}
+
+	if (len > *lenp)
+		len = *lenp;
+	else
+		*lenp = len;
+
+	*ppos += len;
+	memcpy(result, buffer, len);
+	return 0;
+}
+
+#ifdef CONFIG_PARPORT_1284
+static int do_autoprobe(struct ctl_table *table, int write,
+			void *result, size_t *lenp, loff_t *ppos)
+{
+	struct parport_device_info *info = table->extra2;
+	const char *str;
+	char buffer[256];
+	int len = 0;
+
+	if (write) /* permissions stop this */
+		return -EACCES;
+
+	if (*ppos) {
+		*lenp = 0;
+		return 0;
+	}
+	
+	if ((str = info->class_name) != NULL)
+		len += sprintf (buffer + len, "CLASS:%s;\n", str);
+
+	if ((str = info->model) != NULL)
+		len += sprintf (buffer + len, "MODEL:%s;\n", str);
+
+	if ((str = info->mfr) != NULL)
+		len += sprintf (buffer + len, "MANUFACTURER:%s;\n", str);
+
+	if ((str = info->description) != NULL)
+		len += sprintf (buffer + len, "DESCRIPTION:%s;\n", str);
+
+	if ((str = info->cmdset) != NULL)
+		len += sprintf (buffer + len, "COMMAND SET:%s;\n", str);
+
+	if (len > *lenp)
+		len = *lenp;
+	else
+		*lenp = len;
+
+	*ppos += len;
+
+	memcpy(result, buffer, len);
+	return 0;
+}
+#endif /* IEEE1284.3 support. */
+
+static int do_hardware_base_addr(struct ctl_table *table, int write,
+				 void *result, size_t *lenp, loff_t *ppos)
+{
+	struct parport *port = (struct parport *)table->extra1;
+	char buffer[20];
+	int len = 0;
+
+	if (*ppos) {
+		*lenp = 0;
+		return 0;
+	}
+
+	if (write) /* permissions prevent this anyway */
+		return -EACCES;
+
+	len += sprintf (buffer, "%lu\t%lu\n", port->base, port->base_hi);
+
+	if (len > *lenp)
+		len = *lenp;
+	else
+		*lenp = len;
+
+	*ppos += len;
+	memcpy(result, buffer, len);
+	return 0;
+}
+
+static int do_hardware_irq(struct ctl_table *table, int write,
+			   void *result, size_t *lenp, loff_t *ppos)
+{
+	struct parport *port = (struct parport *)table->extra1;
+	char buffer[20];
+	int len = 0;
+
+	if (*ppos) {
+		*lenp = 0;
+		return 0;
+	}
+
+	if (write) /* permissions prevent this anyway */
+		return -EACCES;
+
+	len += sprintf (buffer, "%d\n", port->irq);
+
+	if (len > *lenp)
+		len = *lenp;
+	else
+		*lenp = len;
+
+	*ppos += len;
+	memcpy(result, buffer, len);
+	return 0;
+}
+
+static int do_hardware_dma(struct ctl_table *table, int write,
+			   void *result, size_t *lenp, loff_t *ppos)
+{
+	struct parport *port = (struct parport *)table->extra1;
+	char buffer[20];
+	int len = 0;
+
+	if (*ppos) {
+		*lenp = 0;
+		return 0;
+	}
+
+	if (write) /* permissions prevent this anyway */
+		return -EACCES;
+
+	len += sprintf (buffer, "%d\n", port->dma);
+
+	if (len > *lenp)
+		len = *lenp;
+	else
+		*lenp = len;
+
+	*ppos += len;
+	memcpy(result, buffer, len);
+	return 0;
+}
+
+static int do_hardware_modes(struct ctl_table *table, int write,
+			     void *result, size_t *lenp, loff_t *ppos)
+{
+	struct parport *port = (struct parport *)table->extra1;
+	char buffer[40];
+	int len = 0;
+
+	if (*ppos) {
+		*lenp = 0;
+		return 0;
+	}
+
+	if (write) /* permissions prevent this anyway */
+		return -EACCES;
+
+	{
+#define printmode(x)							\
+do {									\
+	if (port->modes & PARPORT_MODE_##x)				\
+		len += sprintf(buffer + len, "%s%s", f++ ? "," : "", #x); \
+} while (0)
+		int f = 0;
+		printmode(PCSPP);
+		printmode(TRISTATE);
+		printmode(COMPAT);
+		printmode(EPP);
+		printmode(ECP);
+		printmode(DMA);
+#undef printmode
+	}
+	buffer[len++] = '\n';
+
+	if (len > *lenp)
+		len = *lenp;
+	else
+		*lenp = len;
+
+	*ppos += len;
+	memcpy(result, buffer, len);
+	return 0;
+}
+
+#define PARPORT_PORT_DIR(CHILD) { .procname = NULL, .mode = 0555, .child = CHILD }
+#define PARPORT_PARPORT_DIR(CHILD) { .procname = "parport", \
+                                     .mode = 0555, .child = CHILD }
+#define PARPORT_DEV_DIR(CHILD) { .procname = "dev", .mode = 0555, .child = CHILD }
+#define PARPORT_DEVICES_ROOT_DIR  {  .procname = "devices", \
+                                    .mode = 0555, .child = NULL }
+
+static const unsigned long parport_min_timeslice_value =
+PARPORT_MIN_TIMESLICE_VALUE;
+
+static const unsigned long parport_max_timeslice_value =
+PARPORT_MAX_TIMESLICE_VALUE;
+
+static const  int parport_min_spintime_value =
+PARPORT_MIN_SPINTIME_VALUE;
+
+static const int parport_max_spintime_value =
+PARPORT_MAX_SPINTIME_VALUE;
+
+
+struct parport_sysctl_table {
+	struct ctl_table_header *sysctl_header;
+	struct ctl_table vars[12];
+	struct ctl_table device_dir[2];
+	struct ctl_table port_dir[2];
+	struct ctl_table parport_dir[2];
+	struct ctl_table dev_dir[2];
+};
+
+static const struct parport_sysctl_table parport_sysctl_template = {
+	.sysctl_header = NULL,
+        {
+		{
+			.procname	= "spintime",
+			.data		= NULL,
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_minmax,
+			.extra1		= (void*) &parport_min_spintime_value,
+			.extra2		= (void*) &parport_max_spintime_value
+		},
+		{
+			.procname	= "base-addr",
+			.data		= NULL,
+			.maxlen		= 0,
+			.mode		= 0444,
+			.proc_handler	= do_hardware_base_addr
+		},
+		{
+			.procname	= "irq",
+			.data		= NULL,
+			.maxlen		= 0,
+			.mode		= 0444,
+			.proc_handler	= do_hardware_irq
+		},
+		{
+			.procname	= "dma",
+			.data		= NULL,
+			.maxlen		= 0,
+			.mode		= 0444,
+			.proc_handler	= do_hardware_dma
+		},
+		{
+			.procname	= "modes",
+			.data		= NULL,
+			.maxlen		= 0,
+			.mode		= 0444,
+			.proc_handler	= do_hardware_modes
+		},
+		PARPORT_DEVICES_ROOT_DIR,
+#ifdef CONFIG_PARPORT_1284
+		{
+			.procname	= "autoprobe",
+			.data		= NULL,
+			.maxlen		= 0,
+			.mode		= 0444,
+			.proc_handler	= do_autoprobe
+		},
+		{
+			.procname	= "autoprobe0",
+			.data		= NULL,
+			.maxlen		= 0,
+			.mode		= 0444,
+			.proc_handler	= do_autoprobe
+		},
+		{
+			.procname	= "autoprobe1",
+			.data		= NULL,
+			.maxlen		= 0,
+			.mode		= 0444,
+			.proc_handler	= do_autoprobe
+		},
+		{
+			.procname	= "autoprobe2",
+			.data		= NULL,
+			.maxlen		= 0,
+			.mode		= 0444,
+			.proc_handler	= do_autoprobe
+		},
+		{
+			.procname	= "autoprobe3",
+			.data		= NULL,
+			.maxlen		= 0,
+			.mode		= 0444,
+			.proc_handler	= do_autoprobe
+		},
+#endif /* IEEE 1284 support */
+		{}
+	},
+	{
+		{
+			.procname	= "active",
+			.data		= NULL,
+			.maxlen		= 0,
+			.mode		= 0444,
+			.proc_handler	= do_active_device
+		},
+		{}
+	},
+	{
+		PARPORT_PORT_DIR(NULL),
+		{}
+	},
+	{
+		PARPORT_PARPORT_DIR(NULL),
+		{}
+	},
+	{
+		PARPORT_DEV_DIR(NULL),
+		{}
+	}
+};
+
+struct parport_device_sysctl_table
+{
+	struct ctl_table_header *sysctl_header;
+	struct ctl_table vars[2];
+	struct ctl_table device_dir[2];
+	struct ctl_table devices_root_dir[2];
+	struct ctl_table port_dir[2];
+	struct ctl_table parport_dir[2];
+	struct ctl_table dev_dir[2];
+};
+
+static const struct parport_device_sysctl_table
+parport_device_sysctl_template = {
+	.sysctl_header = NULL,
+	{
+		{
+			.procname 	= "timeslice",
+			.data		= NULL,
+			.maxlen		= sizeof(unsigned long),
+			.mode		= 0644,
+			.proc_handler	= proc_doulongvec_ms_jiffies_minmax,
+			.extra1		= (void*) &parport_min_timeslice_value,
+			.extra2		= (void*) &parport_max_timeslice_value
+		},
+	},
+	{
+		{
+			.procname	= NULL,
+			.data		= NULL,
+			.maxlen		= 0,
+			.mode		= 0555,
+			.child		= NULL
+		},
+		{}
+	},
+	{
+		PARPORT_DEVICES_ROOT_DIR,
+		{}
+	},
+	{
+		PARPORT_PORT_DIR(NULL),
+		{}
+	},
+	{
+		PARPORT_PARPORT_DIR(NULL),
+		{}
+	},
+	{
+		PARPORT_DEV_DIR(NULL),
+		{}
+	}
+};
+
+struct parport_default_sysctl_table
+{
+	struct ctl_table_header *sysctl_header;
+	struct ctl_table vars[3];
+	struct ctl_table default_dir[2];
+	struct ctl_table parport_dir[2];
+	struct ctl_table dev_dir[2];
+};
+
+static struct parport_default_sysctl_table
+parport_default_sysctl_table = {
+	.sysctl_header	= NULL,
+	{
+		{
+			.procname	= "timeslice",
+			.data		= &parport_default_timeslice,
+			.maxlen		= sizeof(parport_default_timeslice),
+			.mode		= 0644,
+			.proc_handler	= proc_doulongvec_ms_jiffies_minmax,
+			.extra1		= (void*) &parport_min_timeslice_value,
+			.extra2		= (void*) &parport_max_timeslice_value
+		},
+		{
+			.procname	= "spintime",
+			.data		= &parport_default_spintime,
+			.maxlen		= sizeof(parport_default_spintime),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_minmax,
+			.extra1		= (void*) &parport_min_spintime_value,
+			.extra2		= (void*) &parport_max_spintime_value
+		},
+		{}
+	},
+	{
+		{
+			.procname	= "default",
+			.mode		= 0555,
+			.child		= parport_default_sysctl_table.vars
+		},
+		{}
+	},
+	{
+		PARPORT_PARPORT_DIR(parport_default_sysctl_table.default_dir),
+		{}
+	},
+	{
+		PARPORT_DEV_DIR(parport_default_sysctl_table.parport_dir),
+		{}
+	}
+};
+
+
+int parport_proc_register(struct parport *port)
+{
+	struct parport_sysctl_table *t;
+	int i;
+
+	t = kmemdup(&parport_sysctl_template, sizeof(*t), GFP_KERNEL);
+	if (t == NULL)
+		return -ENOMEM;
+
+	t->device_dir[0].extra1 = port;
+
+	for (i = 0; i < 5; i++)
+		t->vars[i].extra1 = port;
+
+	t->vars[0].data = &port->spintime;
+	t->vars[5].child = t->device_dir;
+	
+	for (i = 0; i < 5; i++)
+		t->vars[6 + i].extra2 = &port->probe_info[i];
+
+	t->port_dir[0].procname = port->name;
+
+	t->port_dir[0].child = t->vars;
+	t->parport_dir[0].child = t->port_dir;
+	t->dev_dir[0].child = t->parport_dir;
+
+	t->sysctl_header = register_sysctl_table(t->dev_dir);
+	if (t->sysctl_header == NULL) {
+		kfree(t);
+		t = NULL;
+	}
+	port->sysctl_table = t;
+	return 0;
+}
+
+int parport_proc_unregister(struct parport *port)
+{
+	if (port->sysctl_table) {
+		struct parport_sysctl_table *t = port->sysctl_table;
+		port->sysctl_table = NULL;
+		unregister_sysctl_table(t->sysctl_header);
+		kfree(t);
+	}
+	return 0;
+}
+
+int parport_device_proc_register(struct pardevice *device)
+{
+	struct parport_device_sysctl_table *t;
+	struct parport * port = device->port;
+	
+	t = kmemdup(&parport_device_sysctl_template, sizeof(*t), GFP_KERNEL);
+	if (t == NULL)
+		return -ENOMEM;
+
+	t->dev_dir[0].child = t->parport_dir;
+	t->parport_dir[0].child = t->port_dir;
+	t->port_dir[0].procname = port->name;
+	t->port_dir[0].child = t->devices_root_dir;
+	t->devices_root_dir[0].child = t->device_dir;
+
+	t->device_dir[0].procname = device->name;
+	t->device_dir[0].child = t->vars;
+	t->vars[0].data = &device->timeslice;
+
+	t->sysctl_header = register_sysctl_table(t->dev_dir);
+	if (t->sysctl_header == NULL) {
+		kfree(t);
+		t = NULL;
+	}
+	device->sysctl_table = t;
+	return 0;
+}
+
+int parport_device_proc_unregister(struct pardevice *device)
+{
+	if (device->sysctl_table) {
+		struct parport_device_sysctl_table *t = device->sysctl_table;
+		device->sysctl_table = NULL;
+		unregister_sysctl_table(t->sysctl_header);
+		kfree(t);
+	}
+	return 0;
+}
+
+static int __init parport_default_proc_register(void)
+{
+	int ret;
+
+	parport_default_sysctl_table.sysctl_header =
+		register_sysctl_table(parport_default_sysctl_table.dev_dir);
+	if (!parport_default_sysctl_table.sysctl_header)
+		return -ENOMEM;
+	ret = parport_bus_init();
+	if (ret) {
+		unregister_sysctl_table(parport_default_sysctl_table.
+					sysctl_header);
+		return ret;
+	}
+	return 0;
+}
+
+static void __exit parport_default_proc_unregister(void)
+{
+	if (parport_default_sysctl_table.sysctl_header) {
+		unregister_sysctl_table(parport_default_sysctl_table.
+					sysctl_header);
+		parport_default_sysctl_table.sysctl_header = NULL;
+	}
+	parport_bus_exit();
+}
+
+#else /* no sysctl or no procfs*/
+
+int parport_proc_register(struct parport *pp)
+{
+	return 0;
+}
+
+int parport_proc_unregister(struct parport *pp)
+{
+	return 0;
+}
+
+int parport_device_proc_register(struct pardevice *device)
+{
+	return 0;
+}
+
+int parport_device_proc_unregister(struct pardevice *device)
+{
+	return 0;
+}
+
+static int __init parport_default_proc_register (void)
+{
+	return parport_bus_init();
+}
+
+static void __exit parport_default_proc_unregister (void)
+{
+	parport_bus_exit();
+}
+#endif
+
+subsys_initcall(parport_default_proc_register)
+module_exit(parport_default_proc_unregister)