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, 464 insertions, 0 deletions

diff --git a/drivers/net/ethernet/engleder/tsnep_tc.c b/drivers/net/ethernet/engleder/tsnep_tc.c
new file mode 100644
index 000000000..d083e6684
--- /dev/null
+++ b/drivers/net/ethernet/engleder/tsnep_tc.c
@@ -0,0 +1,464 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2021 Gerhard Engleder <gerhard@engleder-embedded.com> */
+
+#include "tsnep.h"
+
+#include <net/pkt_sched.h>
+
+/* save one operation at the end for additional operation at list change */
+#define TSNEP_MAX_GCL_NUM (TSNEP_GCL_COUNT - 1)
+
+static int tsnep_validate_gcl(struct tc_taprio_qopt_offload *qopt)
+{
+	int i;
+	u64 cycle_time;
+
+	if (!qopt->cycle_time)
+		return -ERANGE;
+	if (qopt->num_entries > TSNEP_MAX_GCL_NUM)
+		return -EINVAL;
+	cycle_time = 0;
+	for (i = 0; i < qopt->num_entries; i++) {
+		if (qopt->entries[i].command != TC_TAPRIO_CMD_SET_GATES)
+			return -EINVAL;
+		if (qopt->entries[i].gate_mask & ~TSNEP_GCL_MASK)
+			return -EINVAL;
+		if (qopt->entries[i].interval < TSNEP_GCL_MIN_INTERVAL)
+			return -EINVAL;
+		cycle_time += qopt->entries[i].interval;
+	}
+	if (qopt->cycle_time != cycle_time)
+		return -EINVAL;
+	if (qopt->cycle_time_extension >= qopt->cycle_time)
+		return -EINVAL;
+
+	return 0;
+}
+
+static void tsnep_write_gcl_operation(struct tsnep_gcl *gcl, int index,
+				      u32 properties, u32 interval, bool flush)
+{
+	void __iomem *addr = gcl->addr +
+			     sizeof(struct tsnep_gcl_operation) * index;
+
+	gcl->operation[index].properties = properties;
+	gcl->operation[index].interval = interval;
+
+	iowrite32(properties, addr);
+	iowrite32(interval, addr + sizeof(u32));
+
+	if (flush) {
+		/* flush write with read access */
+		ioread32(addr);
+	}
+}
+
+static u64 tsnep_change_duration(struct tsnep_gcl *gcl, int index)
+{
+	u64 duration;
+	int count;
+
+	/* change needs to be triggered one or two operations before start of
+	 * new gate control list
+	 * - change is triggered at start of operation (minimum one operation)
+	 * - operation with adjusted interval is inserted on demand to exactly
+	 *   meet the start of the new gate control list (optional)
+	 *
+	 * additionally properties are read directly after start of previous
+	 * operation
+	 *
+	 * therefore, three operations needs to be considered for the limit
+	 */
+	duration = 0;
+	count = 3;
+	while (count) {
+		duration += gcl->operation[index].interval;
+
+		index--;
+		if (index < 0)
+			index = gcl->count - 1;
+
+		count--;
+	}
+
+	return duration;
+}
+
+static void tsnep_write_gcl(struct tsnep_gcl *gcl,
+			    struct tc_taprio_qopt_offload *qopt)
+{
+	int i;
+	u32 properties;
+	u64 extend;
+	u64 cut;
+
+	gcl->base_time = ktime_to_ns(qopt->base_time);
+	gcl->cycle_time = qopt->cycle_time;
+	gcl->cycle_time_extension = qopt->cycle_time_extension;
+
+	for (i = 0; i < qopt->num_entries; i++) {
+		properties = qopt->entries[i].gate_mask;
+		if (i == (qopt->num_entries - 1))
+			properties |= TSNEP_GCL_LAST;
+
+		tsnep_write_gcl_operation(gcl, i, properties,
+					  qopt->entries[i].interval, true);
+	}
+	gcl->count = qopt->num_entries;
+
+	/* calculate change limit; i.e., the time needed between enable and
+	 * start of new gate control list
+	 */
+
+	/* case 1: extend cycle time for change
+	 * - change duration of last operation
+	 * - cycle time extension
+	 */
+	extend = tsnep_change_duration(gcl, gcl->count - 1);
+	extend += gcl->cycle_time_extension;
+
+	/* case 2: cut cycle time for change
+	 * - maximum change duration
+	 */
+	cut = 0;
+	for (i = 0; i < gcl->count; i++)
+		cut = max(cut, tsnep_change_duration(gcl, i));
+
+	/* use maximum, because the actual case (extend or cut) can be
+	 * determined only after limit is known (chicken-and-egg problem)
+	 */
+	gcl->change_limit = max(extend, cut);
+}
+
+static u64 tsnep_gcl_start_after(struct tsnep_gcl *gcl, u64 limit)
+{
+	u64 start = gcl->base_time;
+	u64 n;
+
+	if (start <= limit) {
+		n = div64_u64(limit - start, gcl->cycle_time);
+		start += (n + 1) * gcl->cycle_time;
+	}
+
+	return start;
+}
+
+static u64 tsnep_gcl_start_before(struct tsnep_gcl *gcl, u64 limit)
+{
+	u64 start = gcl->base_time;
+	u64 n;
+
+	n = div64_u64(limit - start, gcl->cycle_time);
+	start += n * gcl->cycle_time;
+	if (start == limit)
+		start -= gcl->cycle_time;
+
+	return start;
+}
+
+static u64 tsnep_set_gcl_change(struct tsnep_gcl *gcl, int index, u64 change,
+				bool insert)
+{
+	/* previous operation triggers change and properties are evaluated at
+	 * start of operation
+	 */
+	if (index == 0)
+		index = gcl->count - 1;
+	else
+		index = index - 1;
+	change -= gcl->operation[index].interval;
+
+	/* optionally change to new list with additional operation in between */
+	if (insert) {
+		void __iomem *addr = gcl->addr +
+				     sizeof(struct tsnep_gcl_operation) * index;
+
+		gcl->operation[index].properties |= TSNEP_GCL_INSERT;
+		iowrite32(gcl->operation[index].properties, addr);
+	}
+
+	return change;
+}
+
+static void tsnep_clean_gcl(struct tsnep_gcl *gcl)
+{
+	int i;
+	u32 mask = TSNEP_GCL_LAST | TSNEP_GCL_MASK;
+	void __iomem *addr;
+
+	/* search for insert operation and reset properties */
+	for (i = 0; i < gcl->count; i++) {
+		if (gcl->operation[i].properties & ~mask) {
+			addr = gcl->addr +
+			       sizeof(struct tsnep_gcl_operation) * i;
+
+			gcl->operation[i].properties &= mask;
+			iowrite32(gcl->operation[i].properties, addr);
+
+			break;
+		}
+	}
+}
+
+static u64 tsnep_insert_gcl_operation(struct tsnep_gcl *gcl, int ref,
+				      u64 change, u32 interval)
+{
+	u32 properties;
+
+	properties = gcl->operation[ref].properties & TSNEP_GCL_MASK;
+	/* change to new list directly after inserted operation */
+	properties |= TSNEP_GCL_CHANGE;
+
+	/* last operation of list is reserved to insert operation */
+	tsnep_write_gcl_operation(gcl, TSNEP_GCL_COUNT - 1, properties,
+				  interval, false);
+
+	return tsnep_set_gcl_change(gcl, ref, change, true);
+}
+
+static u64 tsnep_extend_gcl(struct tsnep_gcl *gcl, u64 start, u32 extension)
+{
+	int ref = gcl->count - 1;
+	u32 interval = gcl->operation[ref].interval + extension;
+
+	start -= gcl->operation[ref].interval;
+
+	return tsnep_insert_gcl_operation(gcl, ref, start, interval);
+}
+
+static u64 tsnep_cut_gcl(struct tsnep_gcl *gcl, u64 start, u64 cycle_time)
+{
+	u64 sum = 0;
+	int i;
+
+	/* find operation which shall be cutted */
+	for (i = 0; i < gcl->count; i++) {
+		u64 sum_tmp = sum + gcl->operation[i].interval;
+		u64 interval;
+
+		/* sum up operations as long as cycle time is not exceeded */
+		if (sum_tmp > cycle_time)
+			break;
+
+		/* remaining interval must be big enough for hardware */
+		interval = cycle_time - sum_tmp;
+		if (interval > 0 && interval < TSNEP_GCL_MIN_INTERVAL)
+			break;
+
+		sum = sum_tmp;
+	}
+	if (sum == cycle_time) {
+		/* no need to cut operation itself or whole cycle
+		 * => change exactly at operation
+		 */
+		return tsnep_set_gcl_change(gcl, i, start + sum, false);
+	}
+	return tsnep_insert_gcl_operation(gcl, i, start + sum,
+					  cycle_time - sum);
+}
+
+static int tsnep_enable_gcl(struct tsnep_adapter *adapter,
+			    struct tsnep_gcl *gcl, struct tsnep_gcl *curr)
+{
+	u64 system_time;
+	u64 timeout;
+	u64 limit;
+
+	/* estimate timeout limit after timeout enable, actually timeout limit
+	 * in hardware will be earlier than estimate so we are on the safe side
+	 */
+	tsnep_get_system_time(adapter, &system_time);
+	timeout = system_time + TSNEP_GC_TIMEOUT;
+
+	if (curr)
+		limit = timeout + curr->change_limit;
+	else
+		limit = timeout;
+
+	gcl->start_time = tsnep_gcl_start_after(gcl, limit);
+
+	/* gate control time register is only 32bit => time shall be in the near
+	 * future (no driver support for far future implemented)
+	 */
+	if ((gcl->start_time - system_time) >= U32_MAX)
+		return -EAGAIN;
+
+	if (curr) {
+		/* change gate control list */
+		u64 last;
+		u64 change;
+
+		last = tsnep_gcl_start_before(curr, gcl->start_time);
+		if ((last + curr->cycle_time) == gcl->start_time)
+			change = tsnep_cut_gcl(curr, last,
+					       gcl->start_time - last);
+		else if (((gcl->start_time - last) <=
+			  curr->cycle_time_extension) ||
+			 ((gcl->start_time - last) <= TSNEP_GCL_MIN_INTERVAL))
+			change = tsnep_extend_gcl(curr, last,
+						  gcl->start_time - last);
+		else
+			change = tsnep_cut_gcl(curr, last,
+					       gcl->start_time - last);
+
+		WARN_ON(change <= timeout);
+		gcl->change = true;
+		iowrite32(change & 0xFFFFFFFF, adapter->addr + TSNEP_GC_CHANGE);
+	} else {
+		/* start gate control list */
+		WARN_ON(gcl->start_time <= timeout);
+		gcl->change = false;
+		iowrite32(gcl->start_time & 0xFFFFFFFF,
+			  adapter->addr + TSNEP_GC_TIME);
+	}
+
+	return 0;
+}
+
+static int tsnep_taprio(struct tsnep_adapter *adapter,
+			struct tc_taprio_qopt_offload *qopt)
+{
+	struct tsnep_gcl *gcl;
+	struct tsnep_gcl *curr;
+	int retval;
+
+	if (!adapter->gate_control)
+		return -EOPNOTSUPP;
+
+	if (!qopt->enable) {
+		/* disable gate control if active */
+		mutex_lock(&adapter->gate_control_lock);
+
+		if (adapter->gate_control_active) {
+			iowrite8(TSNEP_GC_DISABLE, adapter->addr + TSNEP_GC);
+			adapter->gate_control_active = false;
+		}
+
+		mutex_unlock(&adapter->gate_control_lock);
+
+		return 0;
+	}
+
+	retval = tsnep_validate_gcl(qopt);
+	if (retval)
+		return retval;
+
+	mutex_lock(&adapter->gate_control_lock);
+
+	gcl = &adapter->gcl[adapter->next_gcl];
+	tsnep_write_gcl(gcl, qopt);
+
+	/* select current gate control list if active */
+	if (adapter->gate_control_active) {
+		if (adapter->next_gcl == 0)
+			curr = &adapter->gcl[1];
+		else
+			curr = &adapter->gcl[0];
+	} else {
+		curr = NULL;
+	}
+
+	for (;;) {
+		/* start timeout which discards late enable, this helps ensuring
+		 * that start/change time are in the future at enable
+		 */
+		iowrite8(TSNEP_GC_ENABLE_TIMEOUT, adapter->addr + TSNEP_GC);
+
+		retval = tsnep_enable_gcl(adapter, gcl, curr);
+		if (retval) {
+			mutex_unlock(&adapter->gate_control_lock);
+
+			return retval;
+		}
+
+		/* enable gate control list */
+		if (adapter->next_gcl == 0)
+			iowrite8(TSNEP_GC_ENABLE_A, adapter->addr + TSNEP_GC);
+		else
+			iowrite8(TSNEP_GC_ENABLE_B, adapter->addr + TSNEP_GC);
+
+		/* done if timeout did not happen */
+		if (!(ioread32(adapter->addr + TSNEP_GC) &
+		      TSNEP_GC_TIMEOUT_SIGNAL))
+			break;
+
+		/* timeout is acknowledged with any enable */
+		iowrite8(TSNEP_GC_ENABLE_A, adapter->addr + TSNEP_GC);
+
+		if (curr)
+			tsnep_clean_gcl(curr);
+
+		/* retry because of timeout */
+	}
+
+	adapter->gate_control_active = true;
+
+	if (adapter->next_gcl == 0)
+		adapter->next_gcl = 1;
+	else
+		adapter->next_gcl = 0;
+
+	mutex_unlock(&adapter->gate_control_lock);
+
+	return 0;
+}
+
+static int tsnep_tc_query_caps(struct tsnep_adapter *adapter,
+			       struct tc_query_caps_base *base)
+{
+	switch (base->type) {
+	case TC_SETUP_QDISC_TAPRIO: {
+		struct tc_taprio_caps *caps = base->caps;
+
+		if (!adapter->gate_control)
+			return -EOPNOTSUPP;
+
+		caps->gate_mask_per_txq = true;
+
+		return 0;
+	}
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+int tsnep_tc_setup(struct net_device *netdev, enum tc_setup_type type,
+		   void *type_data)
+{
+	struct tsnep_adapter *adapter = netdev_priv(netdev);
+
+	switch (type) {
+	case TC_QUERY_CAPS:
+		return tsnep_tc_query_caps(adapter, type_data);
+	case TC_SETUP_QDISC_TAPRIO:
+		return tsnep_taprio(adapter, type_data);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+int tsnep_tc_init(struct tsnep_adapter *adapter)
+{
+	if (!adapter->gate_control)
+		return 0;
+
+	/* open all gates */
+	iowrite8(TSNEP_GC_DISABLE, adapter->addr + TSNEP_GC);
+	iowrite32(TSNEP_GC_OPEN | TSNEP_GC_NEXT_OPEN, adapter->addr + TSNEP_GC);
+
+	adapter->gcl[0].addr = adapter->addr + TSNEP_GCL_A;
+	adapter->gcl[1].addr = adapter->addr + TSNEP_GCL_B;
+
+	return 0;
+}
+
+void tsnep_tc_cleanup(struct tsnep_adapter *adapter)
+{
+	if (!adapter->gate_control)
+		return;
+
+	if (adapter->gate_control_active) {
+		iowrite8(TSNEP_GC_DISABLE, adapter->addr + TSNEP_GC);
+		adapter->gate_control_active = false;
+	}
+}