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, 505 insertions, 0 deletions

diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c
new file mode 100644
index 000000000..af3bc65c4
--- /dev/null
+++ b/drivers/ptp/ptp_chardev.c
@@ -0,0 +1,505 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * PTP 1588 clock support - character device implementation.
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ */
+#include <linux/module.h>
+#include <linux/posix-clock.h>
+#include <linux/poll.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/timekeeping.h>
+
+#include <linux/nospec.h>
+
+#include "ptp_private.h"
+
+static int ptp_disable_pinfunc(struct ptp_clock_info *ops,
+			       enum ptp_pin_function func, unsigned int chan)
+{
+	struct ptp_clock_request rq;
+	int err = 0;
+
+	memset(&rq, 0, sizeof(rq));
+
+	switch (func) {
+	case PTP_PF_NONE:
+		break;
+	case PTP_PF_EXTTS:
+		rq.type = PTP_CLK_REQ_EXTTS;
+		rq.extts.index = chan;
+		err = ops->enable(ops, &rq, 0);
+		break;
+	case PTP_PF_PEROUT:
+		rq.type = PTP_CLK_REQ_PEROUT;
+		rq.perout.index = chan;
+		err = ops->enable(ops, &rq, 0);
+		break;
+	case PTP_PF_PHYSYNC:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return err;
+}
+
+int ptp_set_pinfunc(struct ptp_clock *ptp, unsigned int pin,
+		    enum ptp_pin_function func, unsigned int chan)
+{
+	struct ptp_clock_info *info = ptp->info;
+	struct ptp_pin_desc *pin1 = NULL, *pin2 = &info->pin_config[pin];
+	unsigned int i;
+
+	/* Check to see if any other pin previously had this function. */
+	for (i = 0; i < info->n_pins; i++) {
+		if (info->pin_config[i].func == func &&
+		    info->pin_config[i].chan == chan) {
+			pin1 = &info->pin_config[i];
+			break;
+		}
+	}
+	if (pin1 && i == pin)
+		return 0;
+
+	/* Check the desired function and channel. */
+	switch (func) {
+	case PTP_PF_NONE:
+		break;
+	case PTP_PF_EXTTS:
+		if (chan >= info->n_ext_ts)
+			return -EINVAL;
+		break;
+	case PTP_PF_PEROUT:
+		if (chan >= info->n_per_out)
+			return -EINVAL;
+		break;
+	case PTP_PF_PHYSYNC:
+		if (chan != 0)
+			return -EINVAL;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (info->verify(info, pin, func, chan)) {
+		pr_err("driver cannot use function %u on pin %u\n", func, chan);
+		return -EOPNOTSUPP;
+	}
+
+	/* Disable whatever function was previously assigned. */
+	if (pin1) {
+		ptp_disable_pinfunc(info, func, chan);
+		pin1->func = PTP_PF_NONE;
+		pin1->chan = 0;
+	}
+	ptp_disable_pinfunc(info, pin2->func, pin2->chan);
+	pin2->func = func;
+	pin2->chan = chan;
+
+	return 0;
+}
+
+int ptp_open(struct posix_clock *pc, fmode_t fmode)
+{
+	return 0;
+}
+
+long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg)
+{
+	struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
+	struct ptp_sys_offset_extended *extoff = NULL;
+	struct ptp_sys_offset_precise precise_offset;
+	struct system_device_crosststamp xtstamp;
+	struct ptp_clock_info *ops = ptp->info;
+	struct ptp_sys_offset *sysoff = NULL;
+	struct ptp_system_timestamp sts;
+	struct ptp_clock_request req;
+	struct ptp_clock_caps caps;
+	struct ptp_clock_time *pct;
+	unsigned int i, pin_index;
+	struct ptp_pin_desc pd;
+	struct timespec64 ts;
+	int enable, err = 0;
+
+	switch (cmd) {
+
+	case PTP_CLOCK_GETCAPS:
+	case PTP_CLOCK_GETCAPS2:
+		memset(&caps, 0, sizeof(caps));
+
+		caps.max_adj = ptp->info->max_adj;
+		caps.n_alarm = ptp->info->n_alarm;
+		caps.n_ext_ts = ptp->info->n_ext_ts;
+		caps.n_per_out = ptp->info->n_per_out;
+		caps.pps = ptp->info->pps;
+		caps.n_pins = ptp->info->n_pins;
+		caps.cross_timestamping = ptp->info->getcrosststamp != NULL;
+		caps.adjust_phase = ptp->info->adjphase != NULL;
+		if (copy_to_user((void __user *)arg, &caps, sizeof(caps)))
+			err = -EFAULT;
+		break;
+
+	case PTP_EXTTS_REQUEST:
+	case PTP_EXTTS_REQUEST2:
+		memset(&req, 0, sizeof(req));
+
+		if (copy_from_user(&req.extts, (void __user *)arg,
+				   sizeof(req.extts))) {
+			err = -EFAULT;
+			break;
+		}
+		if (cmd == PTP_EXTTS_REQUEST2) {
+			/* Tell the drivers to check the flags carefully. */
+			req.extts.flags |= PTP_STRICT_FLAGS;
+			/* Make sure no reserved bit is set. */
+			if ((req.extts.flags & ~PTP_EXTTS_VALID_FLAGS) ||
+			    req.extts.rsv[0] || req.extts.rsv[1]) {
+				err = -EINVAL;
+				break;
+			}
+			/* Ensure one of the rising/falling edge bits is set. */
+			if ((req.extts.flags & PTP_ENABLE_FEATURE) &&
+			    (req.extts.flags & PTP_EXTTS_EDGES) == 0) {
+				err = -EINVAL;
+				break;
+			}
+		} else if (cmd == PTP_EXTTS_REQUEST) {
+			req.extts.flags &= PTP_EXTTS_V1_VALID_FLAGS;
+			req.extts.rsv[0] = 0;
+			req.extts.rsv[1] = 0;
+		}
+		if (req.extts.index >= ops->n_ext_ts) {
+			err = -EINVAL;
+			break;
+		}
+		req.type = PTP_CLK_REQ_EXTTS;
+		enable = req.extts.flags & PTP_ENABLE_FEATURE ? 1 : 0;
+		if (mutex_lock_interruptible(&ptp->pincfg_mux))
+			return -ERESTARTSYS;
+		err = ops->enable(ops, &req, enable);
+		mutex_unlock(&ptp->pincfg_mux);
+		break;
+
+	case PTP_PEROUT_REQUEST:
+	case PTP_PEROUT_REQUEST2:
+		memset(&req, 0, sizeof(req));
+
+		if (copy_from_user(&req.perout, (void __user *)arg,
+				   sizeof(req.perout))) {
+			err = -EFAULT;
+			break;
+		}
+		if (cmd == PTP_PEROUT_REQUEST2) {
+			struct ptp_perout_request *perout = &req.perout;
+
+			if (perout->flags & ~PTP_PEROUT_VALID_FLAGS) {
+				err = -EINVAL;
+				break;
+			}
+			/*
+			 * The "on" field has undefined meaning if
+			 * PTP_PEROUT_DUTY_CYCLE isn't set, we must still treat
+			 * it as reserved, which must be set to zero.
+			 */
+			if (!(perout->flags & PTP_PEROUT_DUTY_CYCLE) &&
+			    (perout->rsv[0] || perout->rsv[1] ||
+			     perout->rsv[2] || perout->rsv[3])) {
+				err = -EINVAL;
+				break;
+			}
+			if (perout->flags & PTP_PEROUT_DUTY_CYCLE) {
+				/* The duty cycle must be subunitary. */
+				if (perout->on.sec > perout->period.sec ||
+				    (perout->on.sec == perout->period.sec &&
+				     perout->on.nsec > perout->period.nsec)) {
+					err = -ERANGE;
+					break;
+				}
+			}
+			if (perout->flags & PTP_PEROUT_PHASE) {
+				/*
+				 * The phase should be specified modulo the
+				 * period, therefore anything equal or larger
+				 * than 1 period is invalid.
+				 */
+				if (perout->phase.sec > perout->period.sec ||
+				    (perout->phase.sec == perout->period.sec &&
+				     perout->phase.nsec >= perout->period.nsec)) {
+					err = -ERANGE;
+					break;
+				}
+			}
+		} else if (cmd == PTP_PEROUT_REQUEST) {
+			req.perout.flags &= PTP_PEROUT_V1_VALID_FLAGS;
+			req.perout.rsv[0] = 0;
+			req.perout.rsv[1] = 0;
+			req.perout.rsv[2] = 0;
+			req.perout.rsv[3] = 0;
+		}
+		if (req.perout.index >= ops->n_per_out) {
+			err = -EINVAL;
+			break;
+		}
+		req.type = PTP_CLK_REQ_PEROUT;
+		enable = req.perout.period.sec || req.perout.period.nsec;
+		if (mutex_lock_interruptible(&ptp->pincfg_mux))
+			return -ERESTARTSYS;
+		err = ops->enable(ops, &req, enable);
+		mutex_unlock(&ptp->pincfg_mux);
+		break;
+
+	case PTP_ENABLE_PPS:
+	case PTP_ENABLE_PPS2:
+		memset(&req, 0, sizeof(req));
+
+		if (!capable(CAP_SYS_TIME))
+			return -EPERM;
+		req.type = PTP_CLK_REQ_PPS;
+		enable = arg ? 1 : 0;
+		if (mutex_lock_interruptible(&ptp->pincfg_mux))
+			return -ERESTARTSYS;
+		err = ops->enable(ops, &req, enable);
+		mutex_unlock(&ptp->pincfg_mux);
+		break;
+
+	case PTP_SYS_OFFSET_PRECISE:
+	case PTP_SYS_OFFSET_PRECISE2:
+		if (!ptp->info->getcrosststamp) {
+			err = -EOPNOTSUPP;
+			break;
+		}
+		err = ptp->info->getcrosststamp(ptp->info, &xtstamp);
+		if (err)
+			break;
+
+		memset(&precise_offset, 0, sizeof(precise_offset));
+		ts = ktime_to_timespec64(xtstamp.device);
+		precise_offset.device.sec = ts.tv_sec;
+		precise_offset.device.nsec = ts.tv_nsec;
+		ts = ktime_to_timespec64(xtstamp.sys_realtime);
+		precise_offset.sys_realtime.sec = ts.tv_sec;
+		precise_offset.sys_realtime.nsec = ts.tv_nsec;
+		ts = ktime_to_timespec64(xtstamp.sys_monoraw);
+		precise_offset.sys_monoraw.sec = ts.tv_sec;
+		precise_offset.sys_monoraw.nsec = ts.tv_nsec;
+		if (copy_to_user((void __user *)arg, &precise_offset,
+				 sizeof(precise_offset)))
+			err = -EFAULT;
+		break;
+
+	case PTP_SYS_OFFSET_EXTENDED:
+	case PTP_SYS_OFFSET_EXTENDED2:
+		if (!ptp->info->gettimex64) {
+			err = -EOPNOTSUPP;
+			break;
+		}
+		extoff = memdup_user((void __user *)arg, sizeof(*extoff));
+		if (IS_ERR(extoff)) {
+			err = PTR_ERR(extoff);
+			extoff = NULL;
+			break;
+		}
+		if (extoff->n_samples > PTP_MAX_SAMPLES
+		    || extoff->rsv[0] || extoff->rsv[1] || extoff->rsv[2]) {
+			err = -EINVAL;
+			break;
+		}
+		for (i = 0; i < extoff->n_samples; i++) {
+			err = ptp->info->gettimex64(ptp->info, &ts, &sts);
+			if (err)
+				goto out;
+			extoff->ts[i][0].sec = sts.pre_ts.tv_sec;
+			extoff->ts[i][0].nsec = sts.pre_ts.tv_nsec;
+			extoff->ts[i][1].sec = ts.tv_sec;
+			extoff->ts[i][1].nsec = ts.tv_nsec;
+			extoff->ts[i][2].sec = sts.post_ts.tv_sec;
+			extoff->ts[i][2].nsec = sts.post_ts.tv_nsec;
+		}
+		if (copy_to_user((void __user *)arg, extoff, sizeof(*extoff)))
+			err = -EFAULT;
+		break;
+
+	case PTP_SYS_OFFSET:
+	case PTP_SYS_OFFSET2:
+		sysoff = memdup_user((void __user *)arg, sizeof(*sysoff));
+		if (IS_ERR(sysoff)) {
+			err = PTR_ERR(sysoff);
+			sysoff = NULL;
+			break;
+		}
+		if (sysoff->n_samples > PTP_MAX_SAMPLES) {
+			err = -EINVAL;
+			break;
+		}
+		pct = &sysoff->ts[0];
+		for (i = 0; i < sysoff->n_samples; i++) {
+			ktime_get_real_ts64(&ts);
+			pct->sec = ts.tv_sec;
+			pct->nsec = ts.tv_nsec;
+			pct++;
+			if (ops->gettimex64)
+				err = ops->gettimex64(ops, &ts, NULL);
+			else
+				err = ops->gettime64(ops, &ts);
+			if (err)
+				goto out;
+			pct->sec = ts.tv_sec;
+			pct->nsec = ts.tv_nsec;
+			pct++;
+		}
+		ktime_get_real_ts64(&ts);
+		pct->sec = ts.tv_sec;
+		pct->nsec = ts.tv_nsec;
+		if (copy_to_user((void __user *)arg, sysoff, sizeof(*sysoff)))
+			err = -EFAULT;
+		break;
+
+	case PTP_PIN_GETFUNC:
+	case PTP_PIN_GETFUNC2:
+		if (copy_from_user(&pd, (void __user *)arg, sizeof(pd))) {
+			err = -EFAULT;
+			break;
+		}
+		if ((pd.rsv[0] || pd.rsv[1] || pd.rsv[2]
+				|| pd.rsv[3] || pd.rsv[4])
+			&& cmd == PTP_PIN_GETFUNC2) {
+			err = -EINVAL;
+			break;
+		} else if (cmd == PTP_PIN_GETFUNC) {
+			pd.rsv[0] = 0;
+			pd.rsv[1] = 0;
+			pd.rsv[2] = 0;
+			pd.rsv[3] = 0;
+			pd.rsv[4] = 0;
+		}
+		pin_index = pd.index;
+		if (pin_index >= ops->n_pins) {
+			err = -EINVAL;
+			break;
+		}
+		pin_index = array_index_nospec(pin_index, ops->n_pins);
+		if (mutex_lock_interruptible(&ptp->pincfg_mux))
+			return -ERESTARTSYS;
+		pd = ops->pin_config[pin_index];
+		mutex_unlock(&ptp->pincfg_mux);
+		if (!err && copy_to_user((void __user *)arg, &pd, sizeof(pd)))
+			err = -EFAULT;
+		break;
+
+	case PTP_PIN_SETFUNC:
+	case PTP_PIN_SETFUNC2:
+		if (copy_from_user(&pd, (void __user *)arg, sizeof(pd))) {
+			err = -EFAULT;
+			break;
+		}
+		if ((pd.rsv[0] || pd.rsv[1] || pd.rsv[2]
+				|| pd.rsv[3] || pd.rsv[4])
+			&& cmd == PTP_PIN_SETFUNC2) {
+			err = -EINVAL;
+			break;
+		} else if (cmd == PTP_PIN_SETFUNC) {
+			pd.rsv[0] = 0;
+			pd.rsv[1] = 0;
+			pd.rsv[2] = 0;
+			pd.rsv[3] = 0;
+			pd.rsv[4] = 0;
+		}
+		pin_index = pd.index;
+		if (pin_index >= ops->n_pins) {
+			err = -EINVAL;
+			break;
+		}
+		pin_index = array_index_nospec(pin_index, ops->n_pins);
+		if (mutex_lock_interruptible(&ptp->pincfg_mux))
+			return -ERESTARTSYS;
+		err = ptp_set_pinfunc(ptp, pin_index, pd.func, pd.chan);
+		mutex_unlock(&ptp->pincfg_mux);
+		break;
+
+	default:
+		err = -ENOTTY;
+		break;
+	}
+
+out:
+	kfree(extoff);
+	kfree(sysoff);
+	return err;
+}
+
+__poll_t ptp_poll(struct posix_clock *pc, struct file *fp, poll_table *wait)
+{
+	struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
+
+	poll_wait(fp, &ptp->tsev_wq, wait);
+
+	return queue_cnt(&ptp->tsevq) ? EPOLLIN : 0;
+}
+
+#define EXTTS_BUFSIZE (PTP_BUF_TIMESTAMPS * sizeof(struct ptp_extts_event))
+
+ssize_t ptp_read(struct posix_clock *pc,
+		 uint rdflags, char __user *buf, size_t cnt)
+{
+	struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
+	struct timestamp_event_queue *queue = &ptp->tsevq;
+	struct ptp_extts_event *event;
+	unsigned long flags;
+	size_t qcnt, i;
+	int result;
+
+	if (cnt % sizeof(struct ptp_extts_event) != 0)
+		return -EINVAL;
+
+	if (cnt > EXTTS_BUFSIZE)
+		cnt = EXTTS_BUFSIZE;
+
+	cnt = cnt / sizeof(struct ptp_extts_event);
+
+	if (mutex_lock_interruptible(&ptp->tsevq_mux))
+		return -ERESTARTSYS;
+
+	if (wait_event_interruptible(ptp->tsev_wq,
+				     ptp->defunct || queue_cnt(queue))) {
+		mutex_unlock(&ptp->tsevq_mux);
+		return -ERESTARTSYS;
+	}
+
+	if (ptp->defunct) {
+		mutex_unlock(&ptp->tsevq_mux);
+		return -ENODEV;
+	}
+
+	event = kmalloc(EXTTS_BUFSIZE, GFP_KERNEL);
+	if (!event) {
+		mutex_unlock(&ptp->tsevq_mux);
+		return -ENOMEM;
+	}
+
+	spin_lock_irqsave(&queue->lock, flags);
+
+	qcnt = queue_cnt(queue);
+
+	if (cnt > qcnt)
+		cnt = qcnt;
+
+	for (i = 0; i < cnt; i++) {
+		event[i] = queue->buf[queue->head];
+		queue->head = (queue->head + 1) % PTP_MAX_TIMESTAMPS;
+	}
+
+	spin_unlock_irqrestore(&queue->lock, flags);
+
+	cnt = cnt * sizeof(struct ptp_extts_event);
+
+	mutex_unlock(&ptp->tsevq_mux);
+
+	result = cnt;
+	if (copy_to_user(buf, event, cnt))
+		result = -EFAULT;
+
+	kfree(event);
+	return result;
+}