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, 375 insertions, 0 deletions

diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptlf.h b/drivers/crypto/marvell/octeontx2/otx2_cptlf.h
new file mode 100644
index 000000000..4fcaf61a7
--- /dev/null
+++ b/drivers/crypto/marvell/octeontx2/otx2_cptlf.h
@@ -0,0 +1,375 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ * Copyright (C) 2020 Marvell.
+ */
+#ifndef __OTX2_CPTLF_H
+#define __OTX2_CPTLF_H
+
+#include <linux/soc/marvell/octeontx2/asm.h>
+#include <mbox.h>
+#include <rvu.h>
+#include "otx2_cpt_common.h"
+#include "otx2_cpt_reqmgr.h"
+
+/*
+ * CPT instruction and pending queues user requested length in CPT_INST_S msgs
+ */
+#define OTX2_CPT_USER_REQUESTED_QLEN_MSGS 8200
+
+/*
+ * CPT instruction queue size passed to HW is in units of 40*CPT_INST_S
+ * messages.
+ */
+#define OTX2_CPT_SIZE_DIV40 (OTX2_CPT_USER_REQUESTED_QLEN_MSGS/40)
+
+/*
+ * CPT instruction and pending queues length in CPT_INST_S messages
+ */
+#define OTX2_CPT_INST_QLEN_MSGS	((OTX2_CPT_SIZE_DIV40 - 1) * 40)
+
+/*
+ * LDWB is getting incorrectly used when IQB_LDWB = 1 and CPT instruction
+ * queue has less than 320 free entries. So, increase HW instruction queue
+ * size by 320 and give 320 entries less for SW/NIX RX as a workaround.
+ */
+#define OTX2_CPT_INST_QLEN_EXTRA_BYTES  (320 * OTX2_CPT_INST_SIZE)
+#define OTX2_CPT_EXTRA_SIZE_DIV40       (320/40)
+
+/* CPT instruction queue length in bytes */
+#define OTX2_CPT_INST_QLEN_BYTES                                               \
+		((OTX2_CPT_SIZE_DIV40 * 40 * OTX2_CPT_INST_SIZE) +             \
+		OTX2_CPT_INST_QLEN_EXTRA_BYTES)
+
+/* CPT instruction group queue length in bytes */
+#define OTX2_CPT_INST_GRP_QLEN_BYTES                                           \
+		((OTX2_CPT_SIZE_DIV40 + OTX2_CPT_EXTRA_SIZE_DIV40) * 16)
+
+/* CPT FC length in bytes */
+#define OTX2_CPT_Q_FC_LEN 128
+
+/* CPT instruction queue alignment */
+#define OTX2_CPT_INST_Q_ALIGNMENT  128
+
+/* Mask which selects all engine groups */
+#define OTX2_CPT_ALL_ENG_GRPS_MASK 0xFF
+
+/* Maximum LFs supported in OcteonTX2 for CPT */
+#define OTX2_CPT_MAX_LFS_NUM    64
+
+/* Queue priority */
+#define OTX2_CPT_QUEUE_HI_PRIO  0x1
+#define OTX2_CPT_QUEUE_LOW_PRIO 0x0
+
+enum otx2_cptlf_state {
+	OTX2_CPTLF_IN_RESET,
+	OTX2_CPTLF_STARTED,
+};
+
+struct otx2_cpt_inst_queue {
+	u8 *vaddr;
+	u8 *real_vaddr;
+	dma_addr_t dma_addr;
+	dma_addr_t real_dma_addr;
+	u32 size;
+};
+
+struct otx2_cptlfs_info;
+struct otx2_cptlf_wqe {
+	struct tasklet_struct work;
+	struct otx2_cptlfs_info *lfs;
+	u8 lf_num;
+};
+
+struct otx2_cptlf_info {
+	struct otx2_cptlfs_info *lfs;           /* Ptr to cptlfs_info struct */
+	void __iomem *lmtline;                  /* Address of LMTLINE */
+	void __iomem *ioreg;                    /* LMTLINE send register */
+	int msix_offset;                        /* MSI-X interrupts offset */
+	cpumask_var_t affinity_mask;            /* IRQs affinity mask */
+	u8 irq_name[OTX2_CPT_LF_MSIX_VECTORS][32];/* Interrupts name */
+	u8 is_irq_reg[OTX2_CPT_LF_MSIX_VECTORS];  /* Is interrupt registered */
+	u8 slot;                                /* Slot number of this LF */
+
+	struct otx2_cpt_inst_queue iqueue;/* Instruction queue */
+	struct otx2_cpt_pending_queue pqueue; /* Pending queue */
+	struct otx2_cptlf_wqe *wqe;       /* Tasklet work info */
+};
+
+struct cpt_hw_ops {
+	void (*send_cmd)(union otx2_cpt_inst_s *cptinst, u32 insts_num,
+			 struct otx2_cptlf_info *lf);
+	u8 (*cpt_get_compcode)(union otx2_cpt_res_s *result);
+	u8 (*cpt_get_uc_compcode)(union otx2_cpt_res_s *result);
+};
+
+struct otx2_cptlfs_info {
+	/* Registers start address of VF/PF LFs are attached to */
+	void __iomem *reg_base;
+#define LMTLINE_SIZE  128
+	void __iomem *lmt_base;
+	struct pci_dev *pdev;   /* Device LFs are attached to */
+	struct otx2_cptlf_info lf[OTX2_CPT_MAX_LFS_NUM];
+	struct otx2_mbox *mbox;
+	struct cpt_hw_ops *ops;
+	u8 are_lfs_attached;	/* Whether CPT LFs are attached */
+	u8 lfs_num;		/* Number of CPT LFs */
+	u8 kcrypto_eng_grp_num;	/* Kernel crypto engine group number */
+	u8 kvf_limits;          /* Kernel crypto limits */
+	atomic_t state;         /* LF's state. started/reset */
+	int blkaddr;            /* CPT blkaddr: BLKADDR_CPT0/BLKADDR_CPT1 */
+};
+
+static inline void otx2_cpt_free_instruction_queues(
+					struct otx2_cptlfs_info *lfs)
+{
+	struct otx2_cpt_inst_queue *iq;
+	int i;
+
+	for (i = 0; i < lfs->lfs_num; i++) {
+		iq = &lfs->lf[i].iqueue;
+		if (iq->real_vaddr)
+			dma_free_coherent(&lfs->pdev->dev,
+					  iq->size,
+					  iq->real_vaddr,
+					  iq->real_dma_addr);
+		iq->real_vaddr = NULL;
+		iq->vaddr = NULL;
+	}
+}
+
+static inline int otx2_cpt_alloc_instruction_queues(
+					struct otx2_cptlfs_info *lfs)
+{
+	struct otx2_cpt_inst_queue *iq;
+	int ret = 0, i;
+
+	if (!lfs->lfs_num)
+		return -EINVAL;
+
+	for (i = 0; i < lfs->lfs_num; i++) {
+		iq = &lfs->lf[i].iqueue;
+		iq->size = OTX2_CPT_INST_QLEN_BYTES +
+			   OTX2_CPT_Q_FC_LEN +
+			   OTX2_CPT_INST_GRP_QLEN_BYTES +
+			   OTX2_CPT_INST_Q_ALIGNMENT;
+		iq->real_vaddr = dma_alloc_coherent(&lfs->pdev->dev, iq->size,
+					&iq->real_dma_addr, GFP_KERNEL);
+		if (!iq->real_vaddr) {
+			ret = -ENOMEM;
+			goto error;
+		}
+		iq->vaddr = iq->real_vaddr + OTX2_CPT_INST_GRP_QLEN_BYTES;
+		iq->dma_addr = iq->real_dma_addr + OTX2_CPT_INST_GRP_QLEN_BYTES;
+
+		/* Align pointers */
+		iq->vaddr = PTR_ALIGN(iq->vaddr, OTX2_CPT_INST_Q_ALIGNMENT);
+		iq->dma_addr = PTR_ALIGN(iq->dma_addr,
+					 OTX2_CPT_INST_Q_ALIGNMENT);
+	}
+	return 0;
+
+error:
+	otx2_cpt_free_instruction_queues(lfs);
+	return ret;
+}
+
+static inline void otx2_cptlf_set_iqueues_base_addr(
+					struct otx2_cptlfs_info *lfs)
+{
+	union otx2_cptx_lf_q_base lf_q_base;
+	int slot;
+
+	for (slot = 0; slot < lfs->lfs_num; slot++) {
+		lf_q_base.u = lfs->lf[slot].iqueue.dma_addr;
+		otx2_cpt_write64(lfs->reg_base, BLKADDR_CPT0, slot,
+				 OTX2_CPT_LF_Q_BASE, lf_q_base.u);
+	}
+}
+
+static inline void otx2_cptlf_do_set_iqueue_size(struct otx2_cptlf_info *lf)
+{
+	union otx2_cptx_lf_q_size lf_q_size = { .u = 0x0 };
+
+	lf_q_size.s.size_div40 = OTX2_CPT_SIZE_DIV40 +
+				 OTX2_CPT_EXTRA_SIZE_DIV40;
+	otx2_cpt_write64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+			 OTX2_CPT_LF_Q_SIZE, lf_q_size.u);
+}
+
+static inline void otx2_cptlf_set_iqueues_size(struct otx2_cptlfs_info *lfs)
+{
+	int slot;
+
+	for (slot = 0; slot < lfs->lfs_num; slot++)
+		otx2_cptlf_do_set_iqueue_size(&lfs->lf[slot]);
+}
+
+static inline void otx2_cptlf_do_disable_iqueue(struct otx2_cptlf_info *lf)
+{
+	union otx2_cptx_lf_ctl lf_ctl = { .u = 0x0 };
+	union otx2_cptx_lf_inprog lf_inprog;
+	int timeout = 20;
+
+	/* Disable instructions enqueuing */
+	otx2_cpt_write64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+			 OTX2_CPT_LF_CTL, lf_ctl.u);
+
+	/* Wait for instruction queue to become empty */
+	do {
+		lf_inprog.u = otx2_cpt_read64(lf->lfs->reg_base, BLKADDR_CPT0,
+					      lf->slot, OTX2_CPT_LF_INPROG);
+		if (!lf_inprog.s.inflight)
+			break;
+
+		usleep_range(10000, 20000);
+		if (timeout-- < 0) {
+			dev_err(&lf->lfs->pdev->dev,
+				"Error LF %d is still busy.\n", lf->slot);
+			break;
+		}
+
+	} while (1);
+
+	/*
+	 * Disable executions in the LF's queue,
+	 * the queue should be empty at this point
+	 */
+	lf_inprog.s.eena = 0x0;
+	otx2_cpt_write64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+			 OTX2_CPT_LF_INPROG, lf_inprog.u);
+}
+
+static inline void otx2_cptlf_disable_iqueues(struct otx2_cptlfs_info *lfs)
+{
+	int slot;
+
+	for (slot = 0; slot < lfs->lfs_num; slot++)
+		otx2_cptlf_do_disable_iqueue(&lfs->lf[slot]);
+}
+
+static inline void otx2_cptlf_set_iqueue_enq(struct otx2_cptlf_info *lf,
+					     bool enable)
+{
+	union otx2_cptx_lf_ctl lf_ctl;
+
+	lf_ctl.u = otx2_cpt_read64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+				   OTX2_CPT_LF_CTL);
+
+	/* Set iqueue's enqueuing */
+	lf_ctl.s.ena = enable ? 0x1 : 0x0;
+	otx2_cpt_write64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+			 OTX2_CPT_LF_CTL, lf_ctl.u);
+}
+
+static inline void otx2_cptlf_enable_iqueue_enq(struct otx2_cptlf_info *lf)
+{
+	otx2_cptlf_set_iqueue_enq(lf, true);
+}
+
+static inline void otx2_cptlf_set_iqueue_exec(struct otx2_cptlf_info *lf,
+					      bool enable)
+{
+	union otx2_cptx_lf_inprog lf_inprog;
+
+	lf_inprog.u = otx2_cpt_read64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+				      OTX2_CPT_LF_INPROG);
+
+	/* Set iqueue's execution */
+	lf_inprog.s.eena = enable ? 0x1 : 0x0;
+	otx2_cpt_write64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+			 OTX2_CPT_LF_INPROG, lf_inprog.u);
+}
+
+static inline void otx2_cptlf_enable_iqueue_exec(struct otx2_cptlf_info *lf)
+{
+	otx2_cptlf_set_iqueue_exec(lf, true);
+}
+
+static inline void otx2_cptlf_disable_iqueue_exec(struct otx2_cptlf_info *lf)
+{
+	otx2_cptlf_set_iqueue_exec(lf, false);
+}
+
+static inline void otx2_cptlf_enable_iqueues(struct otx2_cptlfs_info *lfs)
+{
+	int slot;
+
+	for (slot = 0; slot < lfs->lfs_num; slot++) {
+		otx2_cptlf_enable_iqueue_exec(&lfs->lf[slot]);
+		otx2_cptlf_enable_iqueue_enq(&lfs->lf[slot]);
+	}
+}
+
+static inline void otx2_cpt_fill_inst(union otx2_cpt_inst_s *cptinst,
+				      struct otx2_cpt_iq_command *iq_cmd,
+				      u64 comp_baddr)
+{
+	cptinst->u[0] = 0x0;
+	cptinst->s.doneint = true;
+	cptinst->s.res_addr = comp_baddr;
+	cptinst->u[2] = 0x0;
+	cptinst->u[3] = 0x0;
+	cptinst->s.ei0 = iq_cmd->cmd.u;
+	cptinst->s.ei1 = iq_cmd->dptr;
+	cptinst->s.ei2 = iq_cmd->rptr;
+	cptinst->s.ei3 = iq_cmd->cptr.u;
+}
+
+/*
+ * On OcteonTX2 platform the parameter insts_num is used as a count of
+ * instructions to be enqueued. The valid values for insts_num are:
+ * 1 - 1 CPT instruction will be enqueued during LMTST operation
+ * 2 - 2 CPT instructions will be enqueued during LMTST operation
+ */
+static inline void otx2_cpt_send_cmd(union otx2_cpt_inst_s *cptinst,
+				     u32 insts_num, struct otx2_cptlf_info *lf)
+{
+	void __iomem *lmtline = lf->lmtline;
+	long ret;
+
+	/*
+	 * Make sure memory areas pointed in CPT_INST_S
+	 * are flushed before the instruction is sent to CPT
+	 */
+	dma_wmb();
+
+	do {
+		/* Copy CPT command to LMTLINE */
+		memcpy_toio(lmtline, cptinst, insts_num * OTX2_CPT_INST_SIZE);
+
+		/*
+		 * LDEOR initiates atomic transfer to I/O device
+		 * The following will cause the LMTST to fail (the LDEOR
+		 * returns zero):
+		 * - No stores have been performed to the LMTLINE since it was
+		 * last invalidated.
+		 * - The bytes which have been stored to LMTLINE since it was
+		 * last invalidated form a pattern that is non-contiguous, does
+		 * not start at byte 0, or does not end on a 8-byte boundary.
+		 * (i.e.comprises a formation of other than 1–16 8-byte
+		 * words.)
+		 *
+		 * These rules are designed such that an operating system
+		 * context switch or hypervisor guest switch need have no
+		 * knowledge of the LMTST operations; the switch code does not
+		 * need to store to LMTCANCEL. Also note as LMTLINE data cannot
+		 * be read, there is no information leakage between processes.
+		 */
+		ret = otx2_lmt_flush(lf->ioreg);
+
+	} while (!ret);
+}
+
+static inline bool otx2_cptlf_started(struct otx2_cptlfs_info *lfs)
+{
+	return atomic_read(&lfs->state) == OTX2_CPTLF_STARTED;
+}
+
+int otx2_cptlf_init(struct otx2_cptlfs_info *lfs, u8 eng_grp_msk, int pri,
+		    int lfs_num);
+void otx2_cptlf_shutdown(struct otx2_cptlfs_info *lfs);
+int otx2_cptlf_register_interrupts(struct otx2_cptlfs_info *lfs);
+void otx2_cptlf_unregister_interrupts(struct otx2_cptlfs_info *lfs);
+void otx2_cptlf_free_irqs_affinity(struct otx2_cptlfs_info *lfs);
+int otx2_cptlf_set_irqs_affinity(struct otx2_cptlfs_info *lfs);
+
+#endif /* __OTX2_CPTLF_H */