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, 369 insertions, 0 deletions

diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptpf_mbox.c b/drivers/crypto/marvell/octeontx2/otx2_cptpf_mbox.c
new file mode 100644
index 000000000..dee0aa60b
--- /dev/null
+++ b/drivers/crypto/marvell/octeontx2/otx2_cptpf_mbox.c
@@ -0,0 +1,369 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2020 Marvell. */
+
+#include "otx2_cpt_common.h"
+#include "otx2_cptpf.h"
+#include "rvu_reg.h"
+
+/*
+ * CPT PF driver version, It will be incremented by 1 for every feature
+ * addition in CPT mailbox messages.
+ */
+#define OTX2_CPT_PF_DRV_VERSION 0x1
+
+static int forward_to_af(struct otx2_cptpf_dev *cptpf,
+			 struct otx2_cptvf_info *vf,
+			 struct mbox_msghdr *req, int size)
+{
+	struct mbox_msghdr *msg;
+	int ret;
+
+	mutex_lock(&cptpf->lock);
+	msg = otx2_mbox_alloc_msg(&cptpf->afpf_mbox, 0, size);
+	if (msg == NULL) {
+		mutex_unlock(&cptpf->lock);
+		return -ENOMEM;
+	}
+
+	memcpy((uint8_t *)msg + sizeof(struct mbox_msghdr),
+	       (uint8_t *)req + sizeof(struct mbox_msghdr), size);
+	msg->id = req->id;
+	msg->pcifunc = req->pcifunc;
+	msg->sig = req->sig;
+	msg->ver = req->ver;
+
+	ret = otx2_cpt_sync_mbox_msg(&cptpf->afpf_mbox);
+	/* Error code -EIO indicate there is a communication failure
+	 * to the AF. Rest of the error codes indicate that AF processed
+	 * VF messages and set the error codes in response messages
+	 * (if any) so simply forward responses to VF.
+	 */
+	if (ret == -EIO) {
+		dev_warn(&cptpf->pdev->dev,
+			 "AF not responding to VF%d messages\n", vf->vf_id);
+		mutex_unlock(&cptpf->lock);
+		return ret;
+	}
+	mutex_unlock(&cptpf->lock);
+	return 0;
+}
+
+static int handle_msg_get_caps(struct otx2_cptpf_dev *cptpf,
+			       struct otx2_cptvf_info *vf,
+			       struct mbox_msghdr *req)
+{
+	struct otx2_cpt_caps_rsp *rsp;
+
+	rsp = (struct otx2_cpt_caps_rsp *)
+	      otx2_mbox_alloc_msg(&cptpf->vfpf_mbox, vf->vf_id,
+				  sizeof(*rsp));
+	if (!rsp)
+		return -ENOMEM;
+
+	rsp->hdr.id = MBOX_MSG_GET_CAPS;
+	rsp->hdr.sig = OTX2_MBOX_RSP_SIG;
+	rsp->hdr.pcifunc = req->pcifunc;
+	rsp->cpt_pf_drv_version = OTX2_CPT_PF_DRV_VERSION;
+	rsp->cpt_revision = cptpf->pdev->revision;
+	memcpy(&rsp->eng_caps, &cptpf->eng_caps, sizeof(rsp->eng_caps));
+
+	return 0;
+}
+
+static int handle_msg_get_eng_grp_num(struct otx2_cptpf_dev *cptpf,
+				      struct otx2_cptvf_info *vf,
+				      struct mbox_msghdr *req)
+{
+	struct otx2_cpt_egrp_num_msg *grp_req;
+	struct otx2_cpt_egrp_num_rsp *rsp;
+
+	grp_req = (struct otx2_cpt_egrp_num_msg *)req;
+	rsp = (struct otx2_cpt_egrp_num_rsp *)
+	       otx2_mbox_alloc_msg(&cptpf->vfpf_mbox, vf->vf_id, sizeof(*rsp));
+	if (!rsp)
+		return -ENOMEM;
+
+	rsp->hdr.id = MBOX_MSG_GET_ENG_GRP_NUM;
+	rsp->hdr.sig = OTX2_MBOX_RSP_SIG;
+	rsp->hdr.pcifunc = req->pcifunc;
+	rsp->eng_type = grp_req->eng_type;
+	rsp->eng_grp_num = otx2_cpt_get_eng_grp(&cptpf->eng_grps,
+						grp_req->eng_type);
+
+	return 0;
+}
+
+static int handle_msg_kvf_limits(struct otx2_cptpf_dev *cptpf,
+				 struct otx2_cptvf_info *vf,
+				 struct mbox_msghdr *req)
+{
+	struct otx2_cpt_kvf_limits_rsp *rsp;
+
+	rsp = (struct otx2_cpt_kvf_limits_rsp *)
+	      otx2_mbox_alloc_msg(&cptpf->vfpf_mbox, vf->vf_id, sizeof(*rsp));
+	if (!rsp)
+		return -ENOMEM;
+
+	rsp->hdr.id = MBOX_MSG_GET_KVF_LIMITS;
+	rsp->hdr.sig = OTX2_MBOX_RSP_SIG;
+	rsp->hdr.pcifunc = req->pcifunc;
+	rsp->kvf_limits = cptpf->kvf_limits;
+
+	return 0;
+}
+
+static int cptpf_handle_vf_req(struct otx2_cptpf_dev *cptpf,
+			       struct otx2_cptvf_info *vf,
+			       struct mbox_msghdr *req, int size)
+{
+	int err = 0;
+
+	/* Check if msg is valid, if not reply with an invalid msg */
+	if (req->sig != OTX2_MBOX_REQ_SIG)
+		goto inval_msg;
+
+	switch (req->id) {
+	case MBOX_MSG_GET_ENG_GRP_NUM:
+		err = handle_msg_get_eng_grp_num(cptpf, vf, req);
+		break;
+	case MBOX_MSG_GET_CAPS:
+		err = handle_msg_get_caps(cptpf, vf, req);
+		break;
+	case MBOX_MSG_GET_KVF_LIMITS:
+		err = handle_msg_kvf_limits(cptpf, vf, req);
+		break;
+	default:
+		err = forward_to_af(cptpf, vf, req, size);
+		break;
+	}
+	return err;
+
+inval_msg:
+	otx2_reply_invalid_msg(&cptpf->vfpf_mbox, vf->vf_id, 0, req->id);
+	otx2_mbox_msg_send(&cptpf->vfpf_mbox, vf->vf_id);
+	return err;
+}
+
+irqreturn_t otx2_cptpf_vfpf_mbox_intr(int __always_unused irq, void *arg)
+{
+	struct otx2_cptpf_dev *cptpf = arg;
+	struct otx2_cptvf_info *vf;
+	int i, vf_idx;
+	u64 intr;
+
+	/*
+	 * Check which VF has raised an interrupt and schedule
+	 * corresponding work queue to process the messages
+	 */
+	for (i = 0; i < 2; i++) {
+		/* Read the interrupt bits */
+		intr = otx2_cpt_read64(cptpf->reg_base, BLKADDR_RVUM, 0,
+				       RVU_PF_VFPF_MBOX_INTX(i));
+
+		for (vf_idx = i * 64; vf_idx < cptpf->enabled_vfs; vf_idx++) {
+			vf = &cptpf->vf[vf_idx];
+			if (intr & (1ULL << vf->intr_idx)) {
+				queue_work(cptpf->vfpf_mbox_wq,
+					   &vf->vfpf_mbox_work);
+				/* Clear the interrupt */
+				otx2_cpt_write64(cptpf->reg_base, BLKADDR_RVUM,
+						 0, RVU_PF_VFPF_MBOX_INTX(i),
+						 BIT_ULL(vf->intr_idx));
+			}
+		}
+	}
+	return IRQ_HANDLED;
+}
+
+void otx2_cptpf_vfpf_mbox_handler(struct work_struct *work)
+{
+	struct otx2_cptpf_dev *cptpf;
+	struct otx2_cptvf_info *vf;
+	struct otx2_mbox_dev *mdev;
+	struct mbox_hdr *req_hdr;
+	struct mbox_msghdr *msg;
+	struct otx2_mbox *mbox;
+	int offset, i, err;
+
+	vf = container_of(work, struct otx2_cptvf_info, vfpf_mbox_work);
+	cptpf = vf->cptpf;
+	mbox = &cptpf->vfpf_mbox;
+	/* sync with mbox memory region */
+	smp_rmb();
+	mdev = &mbox->dev[vf->vf_id];
+	/* Process received mbox messages */
+	req_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
+	offset = mbox->rx_start + ALIGN(sizeof(*req_hdr), MBOX_MSG_ALIGN);
+
+	for (i = 0; i < req_hdr->num_msgs; i++) {
+		msg = (struct mbox_msghdr *)(mdev->mbase + offset);
+
+		/* Set which VF sent this message based on mbox IRQ */
+		msg->pcifunc = ((u16)cptpf->pf_id << RVU_PFVF_PF_SHIFT) |
+				((vf->vf_id + 1) & RVU_PFVF_FUNC_MASK);
+
+		err = cptpf_handle_vf_req(cptpf, vf, msg,
+					  msg->next_msgoff - offset);
+		/*
+		 * Behave as the AF, drop the msg if there is
+		 * no memory, timeout handling also goes here
+		 */
+		if (err == -ENOMEM || err == -EIO)
+			break;
+		offset = msg->next_msgoff;
+		/* Write barrier required for VF responses which are handled by
+		 * PF driver and not forwarded to AF.
+		 */
+		smp_wmb();
+	}
+	/* Send mbox responses to VF */
+	if (mdev->num_msgs)
+		otx2_mbox_msg_send(mbox, vf->vf_id);
+}
+
+irqreturn_t otx2_cptpf_afpf_mbox_intr(int __always_unused irq, void *arg)
+{
+	struct otx2_cptpf_dev *cptpf = arg;
+	u64 intr;
+
+	/* Read the interrupt bits */
+	intr = otx2_cpt_read64(cptpf->reg_base, BLKADDR_RVUM, 0, RVU_PF_INT);
+
+	if (intr & 0x1ULL) {
+		/* Schedule work queue function to process the MBOX request */
+		queue_work(cptpf->afpf_mbox_wq, &cptpf->afpf_mbox_work);
+		/* Clear and ack the interrupt */
+		otx2_cpt_write64(cptpf->reg_base, BLKADDR_RVUM, 0, RVU_PF_INT,
+				 0x1ULL);
+	}
+	return IRQ_HANDLED;
+}
+
+static void process_afpf_mbox_msg(struct otx2_cptpf_dev *cptpf,
+				  struct mbox_msghdr *msg)
+{
+	struct device *dev = &cptpf->pdev->dev;
+	struct cpt_rd_wr_reg_msg *rsp_rd_wr;
+
+	if (msg->id >= MBOX_MSG_MAX) {
+		dev_err(dev, "MBOX msg with unknown ID %d\n", msg->id);
+		return;
+	}
+	if (msg->sig != OTX2_MBOX_RSP_SIG) {
+		dev_err(dev, "MBOX msg with wrong signature %x, ID %d\n",
+			msg->sig, msg->id);
+		return;
+	}
+
+	switch (msg->id) {
+	case MBOX_MSG_READY:
+		cptpf->pf_id = (msg->pcifunc >> RVU_PFVF_PF_SHIFT) &
+				RVU_PFVF_PF_MASK;
+		break;
+	case MBOX_MSG_CPT_RD_WR_REGISTER:
+		rsp_rd_wr = (struct cpt_rd_wr_reg_msg *)msg;
+		if (msg->rc) {
+			dev_err(dev, "Reg %llx rd/wr(%d) failed %d\n",
+				rsp_rd_wr->reg_offset, rsp_rd_wr->is_write,
+				msg->rc);
+			return;
+		}
+		if (!rsp_rd_wr->is_write)
+			*rsp_rd_wr->ret_val = rsp_rd_wr->val;
+		break;
+	case MBOX_MSG_ATTACH_RESOURCES:
+		if (!msg->rc)
+			cptpf->lfs.are_lfs_attached = 1;
+		break;
+	case MBOX_MSG_DETACH_RESOURCES:
+		if (!msg->rc)
+			cptpf->lfs.are_lfs_attached = 0;
+		break;
+
+	default:
+		dev_err(dev,
+			"Unsupported msg %d received.\n", msg->id);
+		break;
+	}
+}
+
+static void forward_to_vf(struct otx2_cptpf_dev *cptpf, struct mbox_msghdr *msg,
+			  int vf_id, int size)
+{
+	struct otx2_mbox *vfpf_mbox;
+	struct mbox_msghdr *fwd;
+
+	if (msg->id >= MBOX_MSG_MAX) {
+		dev_err(&cptpf->pdev->dev,
+			"MBOX msg with unknown ID %d\n", msg->id);
+		return;
+	}
+	if (msg->sig != OTX2_MBOX_RSP_SIG) {
+		dev_err(&cptpf->pdev->dev,
+			"MBOX msg with wrong signature %x, ID %d\n",
+			msg->sig, msg->id);
+		return;
+	}
+	vfpf_mbox = &cptpf->vfpf_mbox;
+	vf_id--;
+	if (vf_id >= cptpf->enabled_vfs) {
+		dev_err(&cptpf->pdev->dev,
+			"MBOX msg to unknown VF: %d >= %d\n",
+			vf_id, cptpf->enabled_vfs);
+		return;
+	}
+	if (msg->id == MBOX_MSG_VF_FLR)
+		return;
+
+	fwd = otx2_mbox_alloc_msg(vfpf_mbox, vf_id, size);
+	if (!fwd) {
+		dev_err(&cptpf->pdev->dev,
+			"Forwarding to VF%d failed.\n", vf_id);
+		return;
+	}
+	memcpy((uint8_t *)fwd + sizeof(struct mbox_msghdr),
+		(uint8_t *)msg + sizeof(struct mbox_msghdr), size);
+	fwd->id = msg->id;
+	fwd->pcifunc = msg->pcifunc;
+	fwd->sig = msg->sig;
+	fwd->ver = msg->ver;
+	fwd->rc = msg->rc;
+}
+
+/* Handle mailbox messages received from AF */
+void otx2_cptpf_afpf_mbox_handler(struct work_struct *work)
+{
+	struct otx2_cptpf_dev *cptpf;
+	struct otx2_mbox *afpf_mbox;
+	struct otx2_mbox_dev *mdev;
+	struct mbox_hdr *rsp_hdr;
+	struct mbox_msghdr *msg;
+	int offset, vf_id, i;
+
+	cptpf = container_of(work, struct otx2_cptpf_dev, afpf_mbox_work);
+	afpf_mbox = &cptpf->afpf_mbox;
+	mdev = &afpf_mbox->dev[0];
+	/* Sync mbox data into memory */
+	smp_wmb();
+
+	rsp_hdr = (struct mbox_hdr *)(mdev->mbase + afpf_mbox->rx_start);
+	offset = ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN);
+
+	for (i = 0; i < rsp_hdr->num_msgs; i++) {
+		msg = (struct mbox_msghdr *)(mdev->mbase + afpf_mbox->rx_start +
+					     offset);
+		vf_id = (msg->pcifunc >> RVU_PFVF_FUNC_SHIFT) &
+			 RVU_PFVF_FUNC_MASK;
+		if (vf_id > 0)
+			forward_to_vf(cptpf, msg, vf_id,
+				      msg->next_msgoff - offset);
+		else
+			process_afpf_mbox_msg(cptpf, msg);
+
+		offset = msg->next_msgoff;
+		/* Sync VF response ready to be sent */
+		smp_wmb();
+		mdev->msgs_acked++;
+	}
+	otx2_mbox_reset(afpf_mbox, 0);
+}