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, 316 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath12k/htc.h b/drivers/net/wireless/ath/ath12k/htc.h
new file mode 100644
index 000000000..7e3dccc7c
--- /dev/null
+++ b/drivers/net/wireless/ath/ath12k/htc.h
@@ -0,0 +1,316 @@
+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
+/*
+ * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef ATH12K_HTC_H
+#define ATH12K_HTC_H
+
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/bug.h>
+#include <linux/skbuff.h>
+#include <linux/timer.h>
+
+struct ath12k_base;
+
+#define HTC_HDR_ENDPOINTID                       GENMASK(7, 0)
+#define HTC_HDR_FLAGS                            GENMASK(15, 8)
+#define HTC_HDR_PAYLOADLEN                       GENMASK(31, 16)
+#define HTC_HDR_CONTROLBYTES0                    GENMASK(7, 0)
+#define HTC_HDR_CONTROLBYTES1                    GENMASK(15, 8)
+#define HTC_HDR_RESERVED                         GENMASK(31, 16)
+
+#define HTC_SVC_MSG_SERVICE_ID                   GENMASK(31, 16)
+#define HTC_SVC_MSG_CONNECTIONFLAGS              GENMASK(15, 0)
+#define HTC_SVC_MSG_SERVICEMETALENGTH            GENMASK(23, 16)
+#define HTC_READY_MSG_CREDITCOUNT                GENMASK(31, 16)
+#define HTC_READY_MSG_CREDITSIZE                 GENMASK(15, 0)
+#define HTC_READY_MSG_MAXENDPOINTS               GENMASK(23, 16)
+
+#define HTC_READY_EX_MSG_HTCVERSION              GENMASK(7, 0)
+#define HTC_READY_EX_MSG_MAXMSGSPERHTCBUNDLE     GENMASK(15, 8)
+
+#define HTC_SVC_RESP_MSG_SERVICEID           GENMASK(31, 16)
+#define HTC_SVC_RESP_MSG_STATUS              GENMASK(7, 0)
+#define HTC_SVC_RESP_MSG_ENDPOINTID          GENMASK(15, 8)
+#define HTC_SVC_RESP_MSG_MAXMSGSIZE          GENMASK(31, 16)
+#define HTC_SVC_RESP_MSG_SERVICEMETALENGTH   GENMASK(7, 0)
+
+#define HTC_MSG_MESSAGEID                        GENMASK(15, 0)
+#define HTC_SETUP_COMPLETE_EX_MSG_SETUPFLAGS     GENMASK(31, 0)
+#define HTC_SETUP_COMPLETE_EX_MSG_MAXMSGSPERBUNDLEDRECV      GENMASK(7, 0)
+#define HTC_SETUP_COMPLETE_EX_MSG_RSVD0          GENMASK(15, 8)
+#define HTC_SETUP_COMPLETE_EX_MSG_RSVD1          GENMASK(23, 16)
+#define HTC_SETUP_COMPLETE_EX_MSG_RSVD2          GENMASK(31, 24)
+
+enum ath12k_htc_tx_flags {
+	ATH12K_HTC_FLAG_NEED_CREDIT_UPDATE = 0x01,
+	ATH12K_HTC_FLAG_SEND_BUNDLE        = 0x02
+};
+
+enum ath12k_htc_rx_flags {
+	ATH12K_HTC_FLAG_TRAILER_PRESENT = 0x02,
+	ATH12K_HTC_FLAG_BUNDLE_MASK     = 0xF0
+};
+
+struct ath12k_htc_hdr {
+	__le32 htc_info;
+	__le32 ctrl_info;
+} __packed __aligned(4);
+
+enum ath12k_htc_msg_id {
+	ATH12K_HTC_MSG_READY_ID                = 1,
+	ATH12K_HTC_MSG_CONNECT_SERVICE_ID      = 2,
+	ATH12K_HTC_MSG_CONNECT_SERVICE_RESP_ID = 3,
+	ATH12K_HTC_MSG_SETUP_COMPLETE_ID       = 4,
+	ATH12K_HTC_MSG_SETUP_COMPLETE_EX_ID    = 5,
+	ATH12K_HTC_MSG_SEND_SUSPEND_COMPLETE   = 6,
+	ATH12K_HTC_MSG_NACK_SUSPEND	       = 7,
+	ATH12K_HTC_MSG_WAKEUP_FROM_SUSPEND_ID  = 8,
+};
+
+enum ath12k_htc_version {
+	ATH12K_HTC_VERSION_2P0 = 0x00, /* 2.0 */
+	ATH12K_HTC_VERSION_2P1 = 0x01, /* 2.1 */
+};
+
+enum ath12k_htc_conn_flag_threshold_level {
+	ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_FOURTH,
+	ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_HALF,
+	ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_THREE_FOURTHS,
+	ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_UNITY,
+};
+
+#define ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK	GENMASK(1, 0)
+#define ATH12K_HTC_CONN_FLAGS_REDUCE_CREDIT_DRIBBLE	BIT(2)
+#define ATH12K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL	BIT(3)
+#define ATH12K_HTC_CONN_FLAGS_RECV_ALLOC		GENMASK(15, 8)
+
+enum ath12k_htc_conn_svc_status {
+	ATH12K_HTC_CONN_SVC_STATUS_SUCCESS      = 0,
+	ATH12K_HTC_CONN_SVC_STATUS_NOT_FOUND    = 1,
+	ATH12K_HTC_CONN_SVC_STATUS_FAILED       = 2,
+	ATH12K_HTC_CONN_SVC_STATUS_NO_RESOURCES = 3,
+	ATH12K_HTC_CONN_SVC_STATUS_NO_MORE_EP   = 4
+};
+
+struct ath12k_htc_ready {
+	__le32 id_credit_count;
+	__le32 size_ep;
+} __packed;
+
+struct ath12k_htc_ready_extended {
+	struct ath12k_htc_ready base;
+	__le32 ver_bundle;
+} __packed;
+
+struct ath12k_htc_conn_svc {
+	__le32 msg_svc_id;
+	__le32 flags_len;
+} __packed;
+
+struct ath12k_htc_conn_svc_resp {
+	__le32 msg_svc_id;
+	__le32 flags_len;
+	__le32 svc_meta_pad;
+} __packed;
+
+struct ath12k_htc_setup_complete_extended {
+	__le32 msg_id;
+	__le32 flags;
+	__le32 max_msgs_per_bundled_recv;
+} __packed;
+
+struct ath12k_htc_msg {
+	__le32 msg_svc_id;
+	__le32 flags_len;
+} __packed __aligned(4);
+
+enum ath12k_htc_record_id {
+	ATH12K_HTC_RECORD_NULL    = 0,
+	ATH12K_HTC_RECORD_CREDITS = 1
+};
+
+struct ath12k_htc_record_hdr {
+	u8 id; /* @enum ath12k_htc_record_id */
+	u8 len;
+	u8 pad0;
+	u8 pad1;
+} __packed;
+
+struct ath12k_htc_credit_report {
+	u8 eid; /* @enum ath12k_htc_ep_id */
+	u8 credits;
+	u8 pad0;
+	u8 pad1;
+} __packed;
+
+struct ath12k_htc_record {
+	struct ath12k_htc_record_hdr hdr;
+	struct ath12k_htc_credit_report credit_report[];
+} __packed __aligned(4);
+
+/* HTC FRAME structure layout draft
+ *
+ * note: the trailer offset is dynamic depending
+ * on payload length. this is only a struct layout draft
+ *
+ *=======================================================
+ *
+ *                 HTC HEADER
+ *
+ *=======================================================
+ *                      |
+ *      HTC message     |        payload
+ *   (variable length)  |    (variable length)
+ *=======================================================
+ *
+ *                  HTC Record
+ *
+ *=======================================================
+ */
+
+enum ath12k_htc_svc_gid {
+	ATH12K_HTC_SVC_GRP_RSVD = 0,
+	ATH12K_HTC_SVC_GRP_WMI = 1,
+	ATH12K_HTC_SVC_GRP_NMI = 2,
+	ATH12K_HTC_SVC_GRP_HTT = 3,
+	ATH12K_HTC_SVC_GRP_CFG = 4,
+	ATH12K_HTC_SVC_GRP_IPA = 5,
+	ATH12K_HTC_SVC_GRP_PKTLOG = 6,
+
+	ATH12K_HTC_SVC_GRP_TEST = 254,
+	ATH12K_HTC_SVC_GRP_LAST = 255,
+};
+
+#define SVC(group, idx) \
+	(int)(((int)(group) << 8) | (int)(idx))
+
+enum ath12k_htc_svc_id {
+	/* NOTE: service ID of 0x0000 is reserved and should never be used */
+	ATH12K_HTC_SVC_ID_RESERVED	= 0x0000,
+	ATH12K_HTC_SVC_ID_UNUSED	= ATH12K_HTC_SVC_ID_RESERVED,
+
+	ATH12K_HTC_SVC_ID_RSVD_CTRL	= SVC(ATH12K_HTC_SVC_GRP_RSVD, 1),
+	ATH12K_HTC_SVC_ID_WMI_CONTROL	= SVC(ATH12K_HTC_SVC_GRP_WMI, 0),
+	ATH12K_HTC_SVC_ID_WMI_DATA_BE	= SVC(ATH12K_HTC_SVC_GRP_WMI, 1),
+	ATH12K_HTC_SVC_ID_WMI_DATA_BK	= SVC(ATH12K_HTC_SVC_GRP_WMI, 2),
+	ATH12K_HTC_SVC_ID_WMI_DATA_VI	= SVC(ATH12K_HTC_SVC_GRP_WMI, 3),
+	ATH12K_HTC_SVC_ID_WMI_DATA_VO	= SVC(ATH12K_HTC_SVC_GRP_WMI, 4),
+	ATH12K_HTC_SVC_ID_WMI_CONTROL_MAC1 = SVC(ATH12K_HTC_SVC_GRP_WMI, 5),
+	ATH12K_HTC_SVC_ID_WMI_CONTROL_MAC2 = SVC(ATH12K_HTC_SVC_GRP_WMI, 6),
+	ATH12K_HTC_SVC_ID_WMI_CONTROL_DIAG = SVC(ATH12K_HTC_SVC_GRP_WMI, 7),
+
+	ATH12K_HTC_SVC_ID_NMI_CONTROL	= SVC(ATH12K_HTC_SVC_GRP_NMI, 0),
+	ATH12K_HTC_SVC_ID_NMI_DATA	= SVC(ATH12K_HTC_SVC_GRP_NMI, 1),
+
+	ATH12K_HTC_SVC_ID_HTT_DATA_MSG	= SVC(ATH12K_HTC_SVC_GRP_HTT, 0),
+
+	/* raw stream service (i.e. flash, tcmd, calibration apps) */
+	ATH12K_HTC_SVC_ID_TEST_RAW_STREAMS = SVC(ATH12K_HTC_SVC_GRP_TEST, 0),
+	ATH12K_HTC_SVC_ID_IPA_TX = SVC(ATH12K_HTC_SVC_GRP_IPA, 0),
+	ATH12K_HTC_SVC_ID_PKT_LOG = SVC(ATH12K_HTC_SVC_GRP_PKTLOG, 0),
+};
+
+#undef SVC
+
+enum ath12k_htc_ep_id {
+	ATH12K_HTC_EP_UNUSED = -1,
+	ATH12K_HTC_EP_0 = 0,
+	ATH12K_HTC_EP_1 = 1,
+	ATH12K_HTC_EP_2,
+	ATH12K_HTC_EP_3,
+	ATH12K_HTC_EP_4,
+	ATH12K_HTC_EP_5,
+	ATH12K_HTC_EP_6,
+	ATH12K_HTC_EP_7,
+	ATH12K_HTC_EP_8,
+	ATH12K_HTC_EP_COUNT,
+};
+
+struct ath12k_htc_ep_ops {
+	void (*ep_tx_complete)(struct ath12k_base *ab, struct sk_buff *skb);
+	void (*ep_rx_complete)(struct ath12k_base *ab, struct sk_buff *skb);
+	void (*ep_tx_credits)(struct ath12k_base *ab);
+};
+
+/* service connection information */
+struct ath12k_htc_svc_conn_req {
+	u16 service_id;
+	struct ath12k_htc_ep_ops ep_ops;
+	int max_send_queue_depth;
+};
+
+/* service connection response information */
+struct ath12k_htc_svc_conn_resp {
+	u8 buffer_len;
+	u8 actual_len;
+	enum ath12k_htc_ep_id eid;
+	unsigned int max_msg_len;
+	u8 connect_resp_code;
+};
+
+#define ATH12K_NUM_CONTROL_TX_BUFFERS 2
+#define ATH12K_HTC_MAX_LEN 4096
+#define ATH12K_HTC_MAX_CTRL_MSG_LEN 256
+#define ATH12K_HTC_WAIT_TIMEOUT_HZ (1 * HZ)
+#define ATH12K_HTC_CONTROL_BUFFER_SIZE (ATH12K_HTC_MAX_CTRL_MSG_LEN + \
+					sizeof(struct ath12k_htc_hdr))
+#define ATH12K_HTC_CONN_SVC_TIMEOUT_HZ (1 * HZ)
+#define ATH12K_HTC_MAX_SERVICE_ALLOC_ENTRIES 8
+
+struct ath12k_htc_ep {
+	struct ath12k_htc *htc;
+	enum ath12k_htc_ep_id eid;
+	enum ath12k_htc_svc_id service_id;
+	struct ath12k_htc_ep_ops ep_ops;
+
+	int max_tx_queue_depth;
+	int max_ep_message_len;
+	u8 ul_pipe_id;
+	u8 dl_pipe_id;
+
+	u8 seq_no; /* for debugging */
+	int tx_credits;
+	bool tx_credit_flow_enabled;
+};
+
+struct ath12k_htc_svc_tx_credits {
+	u16 service_id;
+	u8  credit_allocation;
+};
+
+struct ath12k_htc {
+	struct ath12k_base *ab;
+	struct ath12k_htc_ep endpoint[ATH12K_HTC_EP_COUNT];
+
+	/* protects endpoints */
+	spinlock_t tx_lock;
+
+	u8 control_resp_buffer[ATH12K_HTC_MAX_CTRL_MSG_LEN];
+	int control_resp_len;
+
+	struct completion ctl_resp;
+
+	int total_transmit_credits;
+	struct ath12k_htc_svc_tx_credits
+		service_alloc_table[ATH12K_HTC_MAX_SERVICE_ALLOC_ENTRIES];
+	int target_credit_size;
+	u8 wmi_ep_count;
+};
+
+int ath12k_htc_init(struct ath12k_base *ar);
+int ath12k_htc_wait_target(struct ath12k_htc *htc);
+int ath12k_htc_start(struct ath12k_htc *htc);
+int ath12k_htc_connect_service(struct ath12k_htc *htc,
+			       struct ath12k_htc_svc_conn_req  *conn_req,
+			       struct ath12k_htc_svc_conn_resp *conn_resp);
+int ath12k_htc_send(struct ath12k_htc *htc, enum ath12k_htc_ep_id eid,
+		    struct sk_buff *packet);
+struct sk_buff *ath12k_htc_alloc_skb(struct ath12k_base *ar, int size);
+void ath12k_htc_rx_completion_handler(struct ath12k_base *ar,
+				      struct sk_buff *skb);
+
+#endif