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, 658 insertions, 0 deletions

diff --git a/drivers/net/ethernet/brocade/bna/bfa_msgq.c b/drivers/net/ethernet/brocade/bna/bfa_msgq.c
new file mode 100644
index 000000000..fa40d5ec6
--- /dev/null
+++ b/drivers/net/ethernet/brocade/bna/bfa_msgq.c
@@ -0,0 +1,658 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Linux network driver for QLogic BR-series Converged Network Adapter.
+ */
+/*
+ * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
+ * Copyright (c) 2014-2015 QLogic Corporation
+ * All rights reserved
+ * www.qlogic.com
+ */
+
+/* MSGQ module source file. */
+
+#include "bfi.h"
+#include "bfa_msgq.h"
+#include "bfa_ioc.h"
+
+#define call_cmdq_ent_cbfn(_cmdq_ent, _status)				\
+{									\
+	bfa_msgq_cmdcbfn_t cbfn;					\
+	void *cbarg;							\
+	cbfn = (_cmdq_ent)->cbfn;					\
+	cbarg = (_cmdq_ent)->cbarg;					\
+	(_cmdq_ent)->cbfn = NULL;					\
+	(_cmdq_ent)->cbarg = NULL;					\
+	if (cbfn) {							\
+		cbfn(cbarg, (_status));					\
+	}								\
+}
+
+static void bfa_msgq_cmdq_dbell(struct bfa_msgq_cmdq *cmdq);
+static void bfa_msgq_cmdq_copy_rsp(struct bfa_msgq_cmdq *cmdq);
+
+enum cmdq_event {
+	CMDQ_E_START			= 1,
+	CMDQ_E_STOP			= 2,
+	CMDQ_E_FAIL			= 3,
+	CMDQ_E_POST			= 4,
+	CMDQ_E_INIT_RESP		= 5,
+	CMDQ_E_DB_READY			= 6,
+};
+
+bfa_fsm_state_decl(cmdq, stopped, struct bfa_msgq_cmdq, enum cmdq_event);
+bfa_fsm_state_decl(cmdq, init_wait, struct bfa_msgq_cmdq, enum cmdq_event);
+bfa_fsm_state_decl(cmdq, ready, struct bfa_msgq_cmdq, enum cmdq_event);
+bfa_fsm_state_decl(cmdq, dbell_wait, struct bfa_msgq_cmdq,
+			enum cmdq_event);
+
+static void
+cmdq_sm_stopped_entry(struct bfa_msgq_cmdq *cmdq)
+{
+	struct bfa_msgq_cmd_entry *cmdq_ent;
+
+	cmdq->producer_index = 0;
+	cmdq->consumer_index = 0;
+	cmdq->flags = 0;
+	cmdq->token = 0;
+	cmdq->offset = 0;
+	cmdq->bytes_to_copy = 0;
+	while (!list_empty(&cmdq->pending_q)) {
+		cmdq_ent = list_first_entry(&cmdq->pending_q,
+					    struct bfa_msgq_cmd_entry, qe);
+		list_del(&cmdq_ent->qe);
+		call_cmdq_ent_cbfn(cmdq_ent, BFA_STATUS_FAILED);
+	}
+}
+
+static void
+cmdq_sm_stopped(struct bfa_msgq_cmdq *cmdq, enum cmdq_event event)
+{
+	switch (event) {
+	case CMDQ_E_START:
+		bfa_fsm_set_state(cmdq, cmdq_sm_init_wait);
+		break;
+
+	case CMDQ_E_STOP:
+	case CMDQ_E_FAIL:
+		/* No-op */
+		break;
+
+	case CMDQ_E_POST:
+		cmdq->flags |= BFA_MSGQ_CMDQ_F_DB_UPDATE;
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+cmdq_sm_init_wait_entry(struct bfa_msgq_cmdq *cmdq)
+{
+	bfa_wc_down(&cmdq->msgq->init_wc);
+}
+
+static void
+cmdq_sm_init_wait(struct bfa_msgq_cmdq *cmdq, enum cmdq_event event)
+{
+	switch (event) {
+	case CMDQ_E_STOP:
+	case CMDQ_E_FAIL:
+		bfa_fsm_set_state(cmdq, cmdq_sm_stopped);
+		break;
+
+	case CMDQ_E_POST:
+		cmdq->flags |= BFA_MSGQ_CMDQ_F_DB_UPDATE;
+		break;
+
+	case CMDQ_E_INIT_RESP:
+		if (cmdq->flags & BFA_MSGQ_CMDQ_F_DB_UPDATE) {
+			cmdq->flags &= ~BFA_MSGQ_CMDQ_F_DB_UPDATE;
+			bfa_fsm_set_state(cmdq, cmdq_sm_dbell_wait);
+		} else
+			bfa_fsm_set_state(cmdq, cmdq_sm_ready);
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+cmdq_sm_ready_entry(struct bfa_msgq_cmdq *cmdq)
+{
+}
+
+static void
+cmdq_sm_ready(struct bfa_msgq_cmdq *cmdq, enum cmdq_event event)
+{
+	switch (event) {
+	case CMDQ_E_STOP:
+	case CMDQ_E_FAIL:
+		bfa_fsm_set_state(cmdq, cmdq_sm_stopped);
+		break;
+
+	case CMDQ_E_POST:
+		bfa_fsm_set_state(cmdq, cmdq_sm_dbell_wait);
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+cmdq_sm_dbell_wait_entry(struct bfa_msgq_cmdq *cmdq)
+{
+	bfa_msgq_cmdq_dbell(cmdq);
+}
+
+static void
+cmdq_sm_dbell_wait(struct bfa_msgq_cmdq *cmdq, enum cmdq_event event)
+{
+	switch (event) {
+	case CMDQ_E_STOP:
+	case CMDQ_E_FAIL:
+		bfa_fsm_set_state(cmdq, cmdq_sm_stopped);
+		break;
+
+	case CMDQ_E_POST:
+		cmdq->flags |= BFA_MSGQ_CMDQ_F_DB_UPDATE;
+		break;
+
+	case CMDQ_E_DB_READY:
+		if (cmdq->flags & BFA_MSGQ_CMDQ_F_DB_UPDATE) {
+			cmdq->flags &= ~BFA_MSGQ_CMDQ_F_DB_UPDATE;
+			bfa_fsm_set_state(cmdq, cmdq_sm_dbell_wait);
+		} else
+			bfa_fsm_set_state(cmdq, cmdq_sm_ready);
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+bfa_msgq_cmdq_dbell_ready(void *arg)
+{
+	struct bfa_msgq_cmdq *cmdq = (struct bfa_msgq_cmdq *)arg;
+	bfa_fsm_send_event(cmdq, CMDQ_E_DB_READY);
+}
+
+static void
+bfa_msgq_cmdq_dbell(struct bfa_msgq_cmdq *cmdq)
+{
+	struct bfi_msgq_h2i_db *dbell =
+		(struct bfi_msgq_h2i_db *)(&cmdq->dbell_mb.msg[0]);
+
+	memset(dbell, 0, sizeof(struct bfi_msgq_h2i_db));
+	bfi_h2i_set(dbell->mh, BFI_MC_MSGQ, BFI_MSGQ_H2I_DOORBELL_PI, 0);
+	dbell->mh.mtag.i2htok = 0;
+	dbell->idx.cmdq_pi = htons(cmdq->producer_index);
+
+	if (!bfa_nw_ioc_mbox_queue(cmdq->msgq->ioc, &cmdq->dbell_mb,
+				bfa_msgq_cmdq_dbell_ready, cmdq)) {
+		bfa_msgq_cmdq_dbell_ready(cmdq);
+	}
+}
+
+static void
+__cmd_copy(struct bfa_msgq_cmdq *cmdq, struct bfa_msgq_cmd_entry *cmd)
+{
+	size_t len = cmd->msg_size;
+	size_t to_copy;
+	u8 *src, *dst;
+
+	src = (u8 *)cmd->msg_hdr;
+	dst = (u8 *)cmdq->addr.kva;
+	dst += (cmdq->producer_index * BFI_MSGQ_CMD_ENTRY_SIZE);
+
+	while (len) {
+		to_copy = (len < BFI_MSGQ_CMD_ENTRY_SIZE) ?
+				len : BFI_MSGQ_CMD_ENTRY_SIZE;
+		memcpy(dst, src, to_copy);
+		len -= to_copy;
+		src += BFI_MSGQ_CMD_ENTRY_SIZE;
+		BFA_MSGQ_INDX_ADD(cmdq->producer_index, 1, cmdq->depth);
+		dst = (u8 *)cmdq->addr.kva;
+		dst += (cmdq->producer_index * BFI_MSGQ_CMD_ENTRY_SIZE);
+	}
+
+}
+
+static void
+bfa_msgq_cmdq_ci_update(struct bfa_msgq_cmdq *cmdq, struct bfi_mbmsg *mb)
+{
+	struct bfi_msgq_i2h_db *dbell = (struct bfi_msgq_i2h_db *)mb;
+	struct bfa_msgq_cmd_entry *cmd;
+	int posted = 0;
+
+	cmdq->consumer_index = ntohs(dbell->idx.cmdq_ci);
+
+	/* Walk through pending list to see if the command can be posted */
+	while (!list_empty(&cmdq->pending_q)) {
+		cmd = list_first_entry(&cmdq->pending_q,
+				       struct bfa_msgq_cmd_entry, qe);
+		if (ntohs(cmd->msg_hdr->num_entries) <=
+			BFA_MSGQ_FREE_CNT(cmdq)) {
+			list_del(&cmd->qe);
+			__cmd_copy(cmdq, cmd);
+			posted = 1;
+			call_cmdq_ent_cbfn(cmd, BFA_STATUS_OK);
+		} else {
+			break;
+		}
+	}
+
+	if (posted)
+		bfa_fsm_send_event(cmdq, CMDQ_E_POST);
+}
+
+static void
+bfa_msgq_cmdq_copy_next(void *arg)
+{
+	struct bfa_msgq_cmdq *cmdq = (struct bfa_msgq_cmdq *)arg;
+
+	if (cmdq->bytes_to_copy)
+		bfa_msgq_cmdq_copy_rsp(cmdq);
+}
+
+static void
+bfa_msgq_cmdq_copy_req(struct bfa_msgq_cmdq *cmdq, struct bfi_mbmsg *mb)
+{
+	struct bfi_msgq_i2h_cmdq_copy_req *req =
+		(struct bfi_msgq_i2h_cmdq_copy_req *)mb;
+
+	cmdq->token = 0;
+	cmdq->offset = ntohs(req->offset);
+	cmdq->bytes_to_copy = ntohs(req->len);
+	bfa_msgq_cmdq_copy_rsp(cmdq);
+}
+
+static void
+bfa_msgq_cmdq_copy_rsp(struct bfa_msgq_cmdq *cmdq)
+{
+	struct bfi_msgq_h2i_cmdq_copy_rsp *rsp =
+		(struct bfi_msgq_h2i_cmdq_copy_rsp *)&cmdq->copy_mb.msg[0];
+	int copied;
+	u8 *addr = (u8 *)cmdq->addr.kva;
+
+	memset(rsp, 0, sizeof(struct bfi_msgq_h2i_cmdq_copy_rsp));
+	bfi_h2i_set(rsp->mh, BFI_MC_MSGQ, BFI_MSGQ_H2I_CMDQ_COPY_RSP, 0);
+	rsp->mh.mtag.i2htok = htons(cmdq->token);
+	copied = (cmdq->bytes_to_copy >= BFI_CMD_COPY_SZ) ? BFI_CMD_COPY_SZ :
+		cmdq->bytes_to_copy;
+	addr += cmdq->offset;
+	memcpy(rsp->data, addr, copied);
+
+	cmdq->token++;
+	cmdq->offset += copied;
+	cmdq->bytes_to_copy -= copied;
+
+	if (!bfa_nw_ioc_mbox_queue(cmdq->msgq->ioc, &cmdq->copy_mb,
+				bfa_msgq_cmdq_copy_next, cmdq)) {
+		bfa_msgq_cmdq_copy_next(cmdq);
+	}
+}
+
+static void
+bfa_msgq_cmdq_attach(struct bfa_msgq_cmdq *cmdq, struct bfa_msgq *msgq)
+{
+	cmdq->depth = BFA_MSGQ_CMDQ_NUM_ENTRY;
+	INIT_LIST_HEAD(&cmdq->pending_q);
+	cmdq->msgq = msgq;
+	bfa_fsm_set_state(cmdq, cmdq_sm_stopped);
+}
+
+static void bfa_msgq_rspq_dbell(struct bfa_msgq_rspq *rspq);
+
+enum rspq_event {
+	RSPQ_E_START			= 1,
+	RSPQ_E_STOP			= 2,
+	RSPQ_E_FAIL			= 3,
+	RSPQ_E_RESP			= 4,
+	RSPQ_E_INIT_RESP		= 5,
+	RSPQ_E_DB_READY			= 6,
+};
+
+bfa_fsm_state_decl(rspq, stopped, struct bfa_msgq_rspq, enum rspq_event);
+bfa_fsm_state_decl(rspq, init_wait, struct bfa_msgq_rspq,
+			enum rspq_event);
+bfa_fsm_state_decl(rspq, ready, struct bfa_msgq_rspq, enum rspq_event);
+bfa_fsm_state_decl(rspq, dbell_wait, struct bfa_msgq_rspq,
+			enum rspq_event);
+
+static void
+rspq_sm_stopped_entry(struct bfa_msgq_rspq *rspq)
+{
+	rspq->producer_index = 0;
+	rspq->consumer_index = 0;
+	rspq->flags = 0;
+}
+
+static void
+rspq_sm_stopped(struct bfa_msgq_rspq *rspq, enum rspq_event event)
+{
+	switch (event) {
+	case RSPQ_E_START:
+		bfa_fsm_set_state(rspq, rspq_sm_init_wait);
+		break;
+
+	case RSPQ_E_STOP:
+	case RSPQ_E_FAIL:
+		/* No-op */
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+rspq_sm_init_wait_entry(struct bfa_msgq_rspq *rspq)
+{
+	bfa_wc_down(&rspq->msgq->init_wc);
+}
+
+static void
+rspq_sm_init_wait(struct bfa_msgq_rspq *rspq, enum rspq_event event)
+{
+	switch (event) {
+	case RSPQ_E_FAIL:
+	case RSPQ_E_STOP:
+		bfa_fsm_set_state(rspq, rspq_sm_stopped);
+		break;
+
+	case RSPQ_E_INIT_RESP:
+		bfa_fsm_set_state(rspq, rspq_sm_ready);
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+rspq_sm_ready_entry(struct bfa_msgq_rspq *rspq)
+{
+}
+
+static void
+rspq_sm_ready(struct bfa_msgq_rspq *rspq, enum rspq_event event)
+{
+	switch (event) {
+	case RSPQ_E_STOP:
+	case RSPQ_E_FAIL:
+		bfa_fsm_set_state(rspq, rspq_sm_stopped);
+		break;
+
+	case RSPQ_E_RESP:
+		bfa_fsm_set_state(rspq, rspq_sm_dbell_wait);
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+rspq_sm_dbell_wait_entry(struct bfa_msgq_rspq *rspq)
+{
+	if (!bfa_nw_ioc_is_disabled(rspq->msgq->ioc))
+		bfa_msgq_rspq_dbell(rspq);
+}
+
+static void
+rspq_sm_dbell_wait(struct bfa_msgq_rspq *rspq, enum rspq_event event)
+{
+	switch (event) {
+	case RSPQ_E_STOP:
+	case RSPQ_E_FAIL:
+		bfa_fsm_set_state(rspq, rspq_sm_stopped);
+		break;
+
+	case RSPQ_E_RESP:
+		rspq->flags |= BFA_MSGQ_RSPQ_F_DB_UPDATE;
+		break;
+
+	case RSPQ_E_DB_READY:
+		if (rspq->flags & BFA_MSGQ_RSPQ_F_DB_UPDATE) {
+			rspq->flags &= ~BFA_MSGQ_RSPQ_F_DB_UPDATE;
+			bfa_fsm_set_state(rspq, rspq_sm_dbell_wait);
+		} else
+			bfa_fsm_set_state(rspq, rspq_sm_ready);
+		break;
+
+	default:
+		bfa_sm_fault(event);
+	}
+}
+
+static void
+bfa_msgq_rspq_dbell_ready(void *arg)
+{
+	struct bfa_msgq_rspq *rspq = (struct bfa_msgq_rspq *)arg;
+	bfa_fsm_send_event(rspq, RSPQ_E_DB_READY);
+}
+
+static void
+bfa_msgq_rspq_dbell(struct bfa_msgq_rspq *rspq)
+{
+	struct bfi_msgq_h2i_db *dbell =
+		(struct bfi_msgq_h2i_db *)(&rspq->dbell_mb.msg[0]);
+
+	memset(dbell, 0, sizeof(struct bfi_msgq_h2i_db));
+	bfi_h2i_set(dbell->mh, BFI_MC_MSGQ, BFI_MSGQ_H2I_DOORBELL_CI, 0);
+	dbell->mh.mtag.i2htok = 0;
+	dbell->idx.rspq_ci = htons(rspq->consumer_index);
+
+	if (!bfa_nw_ioc_mbox_queue(rspq->msgq->ioc, &rspq->dbell_mb,
+				bfa_msgq_rspq_dbell_ready, rspq)) {
+		bfa_msgq_rspq_dbell_ready(rspq);
+	}
+}
+
+static void
+bfa_msgq_rspq_pi_update(struct bfa_msgq_rspq *rspq, struct bfi_mbmsg *mb)
+{
+	struct bfi_msgq_i2h_db *dbell = (struct bfi_msgq_i2h_db *)mb;
+	struct bfi_msgq_mhdr *msghdr;
+	int num_entries;
+	int mc;
+	u8 *rspq_qe;
+
+	rspq->producer_index = ntohs(dbell->idx.rspq_pi);
+
+	while (rspq->consumer_index != rspq->producer_index) {
+		rspq_qe = (u8 *)rspq->addr.kva;
+		rspq_qe += (rspq->consumer_index * BFI_MSGQ_RSP_ENTRY_SIZE);
+		msghdr = (struct bfi_msgq_mhdr *)rspq_qe;
+
+		mc = msghdr->msg_class;
+		num_entries = ntohs(msghdr->num_entries);
+
+		if ((mc >= BFI_MC_MAX) || (rspq->rsphdlr[mc].cbfn == NULL))
+			break;
+
+		(rspq->rsphdlr[mc].cbfn)(rspq->rsphdlr[mc].cbarg, msghdr);
+
+		BFA_MSGQ_INDX_ADD(rspq->consumer_index, num_entries,
+				rspq->depth);
+	}
+
+	bfa_fsm_send_event(rspq, RSPQ_E_RESP);
+}
+
+static void
+bfa_msgq_rspq_attach(struct bfa_msgq_rspq *rspq, struct bfa_msgq *msgq)
+{
+	rspq->depth = BFA_MSGQ_RSPQ_NUM_ENTRY;
+	rspq->msgq = msgq;
+	bfa_fsm_set_state(rspq, rspq_sm_stopped);
+}
+
+static void
+bfa_msgq_init_rsp(struct bfa_msgq *msgq,
+		 struct bfi_mbmsg *mb)
+{
+	bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_INIT_RESP);
+	bfa_fsm_send_event(&msgq->rspq, RSPQ_E_INIT_RESP);
+}
+
+static void
+bfa_msgq_init(void *arg)
+{
+	struct bfa_msgq *msgq = (struct bfa_msgq *)arg;
+	struct bfi_msgq_cfg_req *msgq_cfg =
+		(struct bfi_msgq_cfg_req *)&msgq->init_mb.msg[0];
+
+	memset(msgq_cfg, 0, sizeof(struct bfi_msgq_cfg_req));
+	bfi_h2i_set(msgq_cfg->mh, BFI_MC_MSGQ, BFI_MSGQ_H2I_INIT_REQ, 0);
+	msgq_cfg->mh.mtag.i2htok = 0;
+
+	bfa_dma_be_addr_set(msgq_cfg->cmdq.addr, msgq->cmdq.addr.pa);
+	msgq_cfg->cmdq.q_depth = htons(msgq->cmdq.depth);
+	bfa_dma_be_addr_set(msgq_cfg->rspq.addr, msgq->rspq.addr.pa);
+	msgq_cfg->rspq.q_depth = htons(msgq->rspq.depth);
+
+	bfa_nw_ioc_mbox_queue(msgq->ioc, &msgq->init_mb, NULL, NULL);
+}
+
+static void
+bfa_msgq_isr(void *cbarg, struct bfi_mbmsg *msg)
+{
+	struct bfa_msgq *msgq = (struct bfa_msgq *)cbarg;
+
+	switch (msg->mh.msg_id) {
+	case BFI_MSGQ_I2H_INIT_RSP:
+		bfa_msgq_init_rsp(msgq, msg);
+		break;
+
+	case BFI_MSGQ_I2H_DOORBELL_PI:
+		bfa_msgq_rspq_pi_update(&msgq->rspq, msg);
+		break;
+
+	case BFI_MSGQ_I2H_DOORBELL_CI:
+		bfa_msgq_cmdq_ci_update(&msgq->cmdq, msg);
+		break;
+
+	case BFI_MSGQ_I2H_CMDQ_COPY_REQ:
+		bfa_msgq_cmdq_copy_req(&msgq->cmdq, msg);
+		break;
+
+	default:
+		BUG_ON(1);
+	}
+}
+
+static void
+bfa_msgq_notify(void *cbarg, enum bfa_ioc_event event)
+{
+	struct bfa_msgq *msgq = (struct bfa_msgq *)cbarg;
+
+	switch (event) {
+	case BFA_IOC_E_ENABLED:
+		bfa_wc_init(&msgq->init_wc, bfa_msgq_init, msgq);
+		bfa_wc_up(&msgq->init_wc);
+		bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_START);
+		bfa_wc_up(&msgq->init_wc);
+		bfa_fsm_send_event(&msgq->rspq, RSPQ_E_START);
+		bfa_wc_wait(&msgq->init_wc);
+		break;
+
+	case BFA_IOC_E_DISABLED:
+		bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_STOP);
+		bfa_fsm_send_event(&msgq->rspq, RSPQ_E_STOP);
+		break;
+
+	case BFA_IOC_E_FAILED:
+		bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_FAIL);
+		bfa_fsm_send_event(&msgq->rspq, RSPQ_E_FAIL);
+		break;
+
+	default:
+		break;
+	}
+}
+
+u32
+bfa_msgq_meminfo(void)
+{
+	return roundup(BFA_MSGQ_CMDQ_SIZE, BFA_DMA_ALIGN_SZ) +
+		roundup(BFA_MSGQ_RSPQ_SIZE, BFA_DMA_ALIGN_SZ);
+}
+
+void
+bfa_msgq_memclaim(struct bfa_msgq *msgq, u8 *kva, u64 pa)
+{
+	msgq->cmdq.addr.kva = kva;
+	msgq->cmdq.addr.pa  = pa;
+
+	kva += roundup(BFA_MSGQ_CMDQ_SIZE, BFA_DMA_ALIGN_SZ);
+	pa += roundup(BFA_MSGQ_CMDQ_SIZE, BFA_DMA_ALIGN_SZ);
+
+	msgq->rspq.addr.kva = kva;
+	msgq->rspq.addr.pa = pa;
+}
+
+void
+bfa_msgq_attach(struct bfa_msgq *msgq, struct bfa_ioc *ioc)
+{
+	msgq->ioc    = ioc;
+
+	bfa_msgq_cmdq_attach(&msgq->cmdq, msgq);
+	bfa_msgq_rspq_attach(&msgq->rspq, msgq);
+
+	bfa_nw_ioc_mbox_regisr(msgq->ioc, BFI_MC_MSGQ, bfa_msgq_isr, msgq);
+	bfa_ioc_notify_init(&msgq->ioc_notify, bfa_msgq_notify, msgq);
+	bfa_nw_ioc_notify_register(msgq->ioc, &msgq->ioc_notify);
+}
+
+void
+bfa_msgq_regisr(struct bfa_msgq *msgq, enum bfi_mclass mc,
+		bfa_msgq_mcfunc_t cbfn, void *cbarg)
+{
+	msgq->rspq.rsphdlr[mc].cbfn	= cbfn;
+	msgq->rspq.rsphdlr[mc].cbarg	= cbarg;
+}
+
+void
+bfa_msgq_cmd_post(struct bfa_msgq *msgq,  struct bfa_msgq_cmd_entry *cmd)
+{
+	if (ntohs(cmd->msg_hdr->num_entries) <=
+		BFA_MSGQ_FREE_CNT(&msgq->cmdq)) {
+		__cmd_copy(&msgq->cmdq, cmd);
+		call_cmdq_ent_cbfn(cmd, BFA_STATUS_OK);
+		bfa_fsm_send_event(&msgq->cmdq, CMDQ_E_POST);
+	} else {
+		list_add_tail(&cmd->qe, &msgq->cmdq.pending_q);
+	}
+}
+
+void
+bfa_msgq_rsp_copy(struct bfa_msgq *msgq, u8 *buf, size_t buf_len)
+{
+	struct bfa_msgq_rspq *rspq = &msgq->rspq;
+	size_t len = buf_len;
+	size_t to_copy;
+	int ci;
+	u8 *src, *dst;
+
+	ci = rspq->consumer_index;
+	src = (u8 *)rspq->addr.kva;
+	src += (ci * BFI_MSGQ_RSP_ENTRY_SIZE);
+	dst = buf;
+
+	while (len) {
+		to_copy = (len < BFI_MSGQ_RSP_ENTRY_SIZE) ?
+				len : BFI_MSGQ_RSP_ENTRY_SIZE;
+		memcpy(dst, src, to_copy);
+		len -= to_copy;
+		dst += BFI_MSGQ_RSP_ENTRY_SIZE;
+		BFA_MSGQ_INDX_ADD(ci, 1, rspq->depth);
+		src = (u8 *)rspq->addr.kva;
+		src += (ci * BFI_MSGQ_RSP_ENTRY_SIZE);
+	}
+}