Merge tag 'net-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking changes from Jakub Kicinski:
 "WiFi 7 and sendpage changes are the biggest pieces of work for this
  release. The latter will definitely require fixes but I think that we
  got it to a reasonable point.

  Core:

   - Rework the sendpage & splice implementations

     Instead of feeding data into sockets page by page extend sendmsg
     handlers to support taking a reference on the data, controlled by a
     new flag called MSG_SPLICE_PAGES

     Rework the handling of unexpected-end-of-file to invoke an
     additional callback instead of trying to predict what the right
     combination of MORE/NOTLAST flags is

     Remove the MSG_SENDPAGE_NOTLAST flag completely

   - Implement SCM_PIDFD, a new type of CMSG type analogous to
     SCM_CREDENTIALS, but it contains pidfd instead of plain pid

   - Enable socket busy polling with CONFIG_RT

   - Improve reliability and efficiency of reporting for ref_tracker

   - Auto-generate a user space C library for various Netlink families

  Protocols:

   - Allow TCP to shrink the advertised window when necessary, prevent
     sk_rcvbuf auto-tuning from growing the window all the way up to
     tcp_rmem[2]

   - Use per-VMA locking for "page-flipping" TCP receive zerocopy

   - Prepare TCP for device-to-device data transfers, by making sure
     that payloads are always attached to skbs as page frags

   - Make the backoff time for the first N TCP SYN retransmissions
     linear. Exponential backoff is unnecessarily conservative

   - Create a new MPTCP getsockopt to retrieve all info
     (MPTCP_FULL_INFO)

   - Avoid waking up applications using TLS sockets until we have a full
     record

   - Allow using kernel memory for protocol ioctl callbacks, paving the
     way to issuing ioctls over io_uring

   - Add nolocalbypass option to VxLAN, forcing packets to be fully
     encapsulated even if they are destined for a local IP address

   - Make TCPv4 use consistent hash in TIME_WAIT and SYN_RECV. Ensure
     in-kernel ECMP implementation (e.g. Open vSwitch) select the same
     link for all packets. Support L4 symmetric hashing in Open vSwitch

   - PPPoE: make number of hash bits configurable

   - Allow DNS to be overwritten by DHCPACK in the in-kernel DHCP client
     (ipconfig)

   - Add layer 2 miss indication and filtering, allowing higher layers
     (e.g. ACL filters) to make forwarding decisions based on whether
     packet matched forwarding state in lower devices (bridge)

   - Support matching on Connectivity Fault Management (CFM) packets

   - Hide the "link becomes ready" IPv6 messages by demoting their
     printk level to debug

   - HSR: don't enable promiscuous mode if device offloads the proto

   - Support active scanning in IEEE 802.15.4

   - Continue work on Multi-Link Operation for WiFi 7

  BPF:

   - Add precision propagation for subprogs and callbacks. This allows
     maintaining verification efficiency when subprograms are used, or
     in fact passing the verifier at all for complex programs,
     especially those using open-coded iterators

   - Improve BPF's {g,s}setsockopt() length handling. Previously BPF
     assumed the length is always equal to the amount of written data.
     But some protos allow passing a NULL buffer to discover what the
     output buffer *should* be, without writing anything

   - Accept dynptr memory as memory arguments passed to helpers

   - Add routing table ID to bpf_fib_lookup BPF helper

   - Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands

   - Drop bpf_capable() check in BPF_MAP_FREEZE command (used to mark
     maps as read-only)

   - Show target_{obj,btf}_id in tracing link fdinfo

   - Addition of several new kfuncs (most of the names are
     self-explanatory):
      - Add a set of new dynptr kfuncs: bpf_dynptr_adjust(),
        bpf_dynptr_is_null(), bpf_dynptr_is_rdonly(), bpf_dynptr_size()
        and bpf_dynptr_clone().
      - bpf_task_under_cgroup()
      - bpf_sock_destroy() - force closing sockets
      - bpf_cpumask_first_and(), rework bpf_cpumask_any*() kfuncs

  Netfilter:

   - Relax set/map validation checks in nf_tables. Allow checking
     presence of an entry in a map without using the value

   - Increase ip_vs_conn_tab_bits range for 64BIT builds

   - Allow updating size of a set

   - Improve NAT tuple selection when connection is closing

  Driver API:

   - Integrate netdev with LED subsystem, to allow configuring HW
     "offloaded" blinking of LEDs based on link state and activity
     (i.e. packets coming in and out)

   - Support configuring rate selection pins of SFP modules

   - Factor Clause 73 auto-negotiation code out of the drivers, provide
     common helper routines

   - Add more fool-proof helpers for managing lifetime of MDIO devices
     associated with the PCS layer

   - Allow drivers to report advanced statistics related to Time Aware
     scheduler offload (taprio)

   - Allow opting out of VF statistics in link dump, to allow more VFs
     to fit into the message

   - Split devlink instance and devlink port operations

  New hardware / drivers:

   - Ethernet:
      - Synopsys EMAC4 IP support (stmmac)
      - Marvell 88E6361 8 port (5x1GE + 3x2.5GE) switches
      - Marvell 88E6250 7 port switches
      - Microchip LAN8650/1 Rev.B0 PHYs
      - MediaTek MT7981/MT7988 built-in 1GE PHY driver

   - WiFi:
      - Realtek RTL8192FU, 2.4 GHz, b/g/n mode, 2T2R, 300 Mbps
      - Realtek RTL8723DS (SDIO variant)
      - Realtek RTL8851BE

   - CAN:
      - Fintek F81604

  Drivers:

   - Ethernet NICs:
      - Intel (100G, ice):
         - support dynamic interrupt allocation
         - use meta data match instead of VF MAC addr on slow-path
      - nVidia/Mellanox:
         - extend link aggregation to handle 4, rather than just 2 ports
         - spawn sub-functions without any features by default
      - OcteonTX2:
         - support HTB (Tx scheduling/QoS) offload
         - make RSS hash generation configurable
         - support selecting Rx queue using TC filters
      - Wangxun (ngbe/txgbe):
         - add basic Tx/Rx packet offloads
         - add phylink support (SFP/PCS control)
      - Freescale/NXP (enetc):
         - report TAPRIO packet statistics
      - Solarflare/AMD:
         - support matching on IP ToS and UDP source port of outer
           header
         - VxLAN and GENEVE tunnel encapsulation over IPv4 or IPv6
         - add devlink dev info support for EF10

   - Virtual NICs:
      - Microsoft vNIC:
         - size the Rx indirection table based on requested
           configuration
         - support VLAN tagging
      - Amazon vNIC:
         - try to reuse Rx buffers if not fully consumed, useful for ARM
           servers running with 16kB pages
      - Google vNIC:
         - support TCP segmentation of >64kB frames

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - enable USXGMII (88E6191X)
      - Microchip:
         - lan966x: add support for Egress Stage 0 ACL engine
         - lan966x: support mapping packet priority to internal switch
           priority (based on PCP or DSCP)

   - Ethernet PHYs:
      - Broadcom PHYs:
         - support for Wake-on-LAN for BCM54210E/B50212E
         - report LPI counter
      - Microsemi PHYs: support RGMII delay configuration (VSC85xx)
      - Micrel PHYs: receive timestamp in the frame (LAN8841)
      - Realtek PHYs: support optional external PHY clock
      - Altera TSE PCS: merge the driver into Lynx PCS which it is a
        variant of

   - CAN: Kvaser PCIEcan:
      - support packet timestamping

   - WiFi:
      - Intel (iwlwifi):
         - major update for new firmware and Multi-Link Operation (MLO)
         - configuration rework to drop test devices and split the
           different families
         - support for segmented PNVM images and power tables
         - new vendor entries for PPAG (platform antenna gain) feature
      - Qualcomm 802.11ax (ath11k):
         - Multiple Basic Service Set Identifier (MBSSID) and Enhanced
           MBSSID Advertisement (EMA) support in AP mode
         - support factory test mode
      - RealTek (rtw89):
         - add RSSI based antenna diversity
         - support U-NII-4 channels on 5 GHz band
      - RealTek (rtl8xxxu):
         - AP mode support for 8188f
         - support USB RX aggregation for the newer chips"

* tag 'net-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1602 commits)
  net: scm: introduce and use scm_recv_unix helper
  af_unix: Skip SCM_PIDFD if scm->pid is NULL.
  net: lan743x: Simplify comparison
  netlink: Add __sock_i_ino() for __netlink_diag_dump().
  net: dsa: avoid suspicious RCU usage for synced VLAN-aware MAC addresses
  Revert "af_unix: Call scm_recv() only after scm_set_cred()."
  phylink: ReST-ify the phylink_pcs_neg_mode() kdoc
  libceph: Partially revert changes to support MSG_SPLICE_PAGES
  net: phy: mscc: fix packet loss due to RGMII delays
  net: mana: use vmalloc_array and vcalloc
  net: enetc: use vmalloc_array and vcalloc
  ionic: use vmalloc_array and vcalloc
  pds_core: use vmalloc_array and vcalloc
  gve: use vmalloc_array and vcalloc
  octeon_ep: use vmalloc_array and vcalloc
  net: usb: qmi_wwan: add u-blox 0x1312 composition
  perf trace: fix MSG_SPLICE_PAGES build error
  ipvlan: Fix return value of ipvlan_queue_xmit()
  netfilter: nf_tables: fix underflow in chain reference counter
  netfilter: nf_tables: unbind non-anonymous set if rule construction fails
  ...

1 files changed, 1363 insertions, 0 deletions

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/qos.c b/drivers/net/ethernet/marvell/octeontx2/nic/qos.c
new file mode 100644
index 000000000000..d3a76c5ccda8
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/qos.c
@@ -0,0 +1,1363 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2023 Marvell.
+ *
+ */
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/bitfield.h>
+
+#include "otx2_common.h"
+#include "cn10k.h"
+#include "qos.h"
+
+#define OTX2_QOS_QID_INNER		0xFFFFU
+#define OTX2_QOS_QID_NONE		0xFFFEU
+#define OTX2_QOS_ROOT_CLASSID		0xFFFFFFFF
+#define OTX2_QOS_CLASS_NONE		0
+#define OTX2_QOS_DEFAULT_PRIO		0xF
+#define OTX2_QOS_INVALID_SQ		0xFFFF
+
+static void otx2_qos_update_tx_netdev_queues(struct otx2_nic *pfvf)
+{
+	struct otx2_hw *hw = &pfvf->hw;
+	int tx_queues, qos_txqs, err;
+
+	qos_txqs = bitmap_weight(pfvf->qos.qos_sq_bmap,
+				 OTX2_QOS_MAX_LEAF_NODES);
+
+	tx_queues = hw->tx_queues + qos_txqs;
+
+	err = netif_set_real_num_tx_queues(pfvf->netdev, tx_queues);
+	if (err) {
+		netdev_err(pfvf->netdev,
+			   "Failed to set no of Tx queues: %d\n", tx_queues);
+		return;
+	}
+}
+
+static void otx2_qos_get_regaddr(struct otx2_qos_node *node,
+				 struct nix_txschq_config *cfg,
+				 int index)
+{
+	if (node->level == NIX_TXSCH_LVL_SMQ) {
+		cfg->reg[index++] = NIX_AF_MDQX_PARENT(node->schq);
+		cfg->reg[index++] = NIX_AF_MDQX_SCHEDULE(node->schq);
+		cfg->reg[index++] = NIX_AF_MDQX_PIR(node->schq);
+		cfg->reg[index]   = NIX_AF_MDQX_CIR(node->schq);
+	} else if (node->level == NIX_TXSCH_LVL_TL4) {
+		cfg->reg[index++] = NIX_AF_TL4X_PARENT(node->schq);
+		cfg->reg[index++] = NIX_AF_TL4X_SCHEDULE(node->schq);
+		cfg->reg[index++] = NIX_AF_TL4X_PIR(node->schq);
+		cfg->reg[index]   = NIX_AF_TL4X_CIR(node->schq);
+	} else if (node->level == NIX_TXSCH_LVL_TL3) {
+		cfg->reg[index++] = NIX_AF_TL3X_PARENT(node->schq);
+		cfg->reg[index++] = NIX_AF_TL3X_SCHEDULE(node->schq);
+		cfg->reg[index++] = NIX_AF_TL3X_PIR(node->schq);
+		cfg->reg[index]   = NIX_AF_TL3X_CIR(node->schq);
+	} else if (node->level == NIX_TXSCH_LVL_TL2) {
+		cfg->reg[index++] = NIX_AF_TL2X_PARENT(node->schq);
+		cfg->reg[index++] = NIX_AF_TL2X_SCHEDULE(node->schq);
+		cfg->reg[index++] = NIX_AF_TL2X_PIR(node->schq);
+		cfg->reg[index]   = NIX_AF_TL2X_CIR(node->schq);
+	}
+}
+
+static void otx2_config_sched_shaping(struct otx2_nic *pfvf,
+				      struct otx2_qos_node *node,
+				      struct nix_txschq_config *cfg,
+				      int *num_regs)
+{
+	u64 maxrate;
+
+	otx2_qos_get_regaddr(node, cfg, *num_regs);
+
+	/* configure parent txschq */
+	cfg->regval[*num_regs] = node->parent->schq << 16;
+	(*num_regs)++;
+
+	/* configure prio/quantum */
+	if (node->qid == OTX2_QOS_QID_NONE) {
+		cfg->regval[*num_regs] =  node->prio << 24 |
+					  mtu_to_dwrr_weight(pfvf, pfvf->tx_max_pktlen);
+		(*num_regs)++;
+		return;
+	}
+
+	/* configure priority  */
+	cfg->regval[*num_regs] = (node->schq - node->parent->prio_anchor) << 24;
+	(*num_regs)++;
+
+	/* configure PIR */
+	maxrate = (node->rate > node->ceil) ? node->rate : node->ceil;
+
+	cfg->regval[*num_regs] =
+		otx2_get_txschq_rate_regval(pfvf, maxrate, 65536);
+	(*num_regs)++;
+
+	/* Don't configure CIR when both CIR+PIR not supported
+	 * On 96xx, CIR + PIR + RED_ALGO=STALL causes deadlock
+	 */
+	if (!test_bit(QOS_CIR_PIR_SUPPORT, &pfvf->hw.cap_flag))
+		return;
+
+	cfg->regval[*num_regs] =
+		otx2_get_txschq_rate_regval(pfvf, node->rate, 65536);
+	(*num_regs)++;
+}
+
+static void __otx2_qos_txschq_cfg(struct otx2_nic *pfvf,
+				  struct otx2_qos_node *node,
+				  struct nix_txschq_config *cfg)
+{
+	struct otx2_hw *hw = &pfvf->hw;
+	int num_regs = 0;
+	u8 level;
+
+	level = node->level;
+
+	/* program txschq registers */
+	if (level == NIX_TXSCH_LVL_SMQ) {
+		cfg->reg[num_regs] = NIX_AF_SMQX_CFG(node->schq);
+		cfg->regval[num_regs] = ((u64)pfvf->tx_max_pktlen << 8) |
+					OTX2_MIN_MTU;
+		cfg->regval[num_regs] |= (0x20ULL << 51) | (0x80ULL << 39) |
+					 (0x2ULL << 36);
+		num_regs++;
+
+		otx2_config_sched_shaping(pfvf, node, cfg, &num_regs);
+
+	} else if (level == NIX_TXSCH_LVL_TL4) {
+		otx2_config_sched_shaping(pfvf, node, cfg, &num_regs);
+	} else if (level == NIX_TXSCH_LVL_TL3) {
+		/* configure link cfg */
+		if (level == pfvf->qos.link_cfg_lvl) {
+			cfg->reg[num_regs] = NIX_AF_TL3_TL2X_LINKX_CFG(node->schq, hw->tx_link);
+			cfg->regval[num_regs] = BIT_ULL(13) | BIT_ULL(12);
+			num_regs++;
+		}
+
+		otx2_config_sched_shaping(pfvf, node, cfg, &num_regs);
+	} else if (level == NIX_TXSCH_LVL_TL2) {
+		/* configure link cfg */
+		if (level == pfvf->qos.link_cfg_lvl) {
+			cfg->reg[num_regs] = NIX_AF_TL3_TL2X_LINKX_CFG(node->schq, hw->tx_link);
+			cfg->regval[num_regs] = BIT_ULL(13) | BIT_ULL(12);
+			num_regs++;
+		}
+
+		/* check if node is root */
+		if (node->qid == OTX2_QOS_QID_INNER && !node->parent) {
+			cfg->reg[num_regs] = NIX_AF_TL2X_SCHEDULE(node->schq);
+			cfg->regval[num_regs] =  TXSCH_TL1_DFLT_RR_PRIO << 24 |
+						 mtu_to_dwrr_weight(pfvf,
+								    pfvf->tx_max_pktlen);
+			num_regs++;
+			goto txschq_cfg_out;
+		}
+
+		otx2_config_sched_shaping(pfvf, node, cfg, &num_regs);
+	}
+
+txschq_cfg_out:
+	cfg->num_regs = num_regs;
+}
+
+static int otx2_qos_txschq_set_parent_topology(struct otx2_nic *pfvf,
+					       struct otx2_qos_node *parent)
+{
+	struct mbox *mbox = &pfvf->mbox;
+	struct nix_txschq_config *cfg;
+	int rc;
+
+	if (parent->level == NIX_TXSCH_LVL_MDQ)
+		return 0;
+
+	mutex_lock(&mbox->lock);
+
+	cfg = otx2_mbox_alloc_msg_nix_txschq_cfg(&pfvf->mbox);
+	if (!cfg) {
+		mutex_unlock(&mbox->lock);
+		return -ENOMEM;
+	}
+
+	cfg->lvl = parent->level;
+
+	if (parent->level == NIX_TXSCH_LVL_TL4)
+		cfg->reg[0] = NIX_AF_TL4X_TOPOLOGY(parent->schq);
+	else if (parent->level == NIX_TXSCH_LVL_TL3)
+		cfg->reg[0] = NIX_AF_TL3X_TOPOLOGY(parent->schq);
+	else if (parent->level == NIX_TXSCH_LVL_TL2)
+		cfg->reg[0] = NIX_AF_TL2X_TOPOLOGY(parent->schq);
+	else if (parent->level == NIX_TXSCH_LVL_TL1)
+		cfg->reg[0] = NIX_AF_TL1X_TOPOLOGY(parent->schq);
+
+	cfg->regval[0] = (u64)parent->prio_anchor << 32;
+	if (parent->level == NIX_TXSCH_LVL_TL1)
+		cfg->regval[0] |= (u64)TXSCH_TL1_DFLT_RR_PRIO << 1;
+
+	cfg->num_regs++;
+
+	rc = otx2_sync_mbox_msg(&pfvf->mbox);
+
+	mutex_unlock(&mbox->lock);
+
+	return rc;
+}
+
+static void otx2_qos_free_hw_node_schq(struct otx2_nic *pfvf,
+				       struct otx2_qos_node *parent)
+{
+	struct otx2_qos_node *node;
+
+	list_for_each_entry_reverse(node, &parent->child_schq_list, list)
+		otx2_txschq_free_one(pfvf, node->level, node->schq);
+}
+
+static void otx2_qos_free_hw_node(struct otx2_nic *pfvf,
+				  struct otx2_qos_node *parent)
+{
+	struct otx2_qos_node *node, *tmp;
+
+	list_for_each_entry_safe(node, tmp, &parent->child_list, list) {
+		otx2_qos_free_hw_node(pfvf, node);
+		otx2_qos_free_hw_node_schq(pfvf, node);
+		otx2_txschq_free_one(pfvf, node->level, node->schq);
+	}
+}
+
+static void otx2_qos_free_hw_cfg(struct otx2_nic *pfvf,
+				 struct otx2_qos_node *node)
+{
+	mutex_lock(&pfvf->qos.qos_lock);
+
+	/* free child node hw mappings */
+	otx2_qos_free_hw_node(pfvf, node);
+	otx2_qos_free_hw_node_schq(pfvf, node);
+
+	/* free node hw mappings */
+	otx2_txschq_free_one(pfvf, node->level, node->schq);
+
+	mutex_unlock(&pfvf->qos.qos_lock);
+}
+
+static void otx2_qos_sw_node_delete(struct otx2_nic *pfvf,
+				    struct otx2_qos_node *node)
+{
+	hash_del_rcu(&node->hlist);
+
+	if (node->qid != OTX2_QOS_QID_INNER && node->qid != OTX2_QOS_QID_NONE) {
+		__clear_bit(node->qid, pfvf->qos.qos_sq_bmap);
+		otx2_qos_update_tx_netdev_queues(pfvf);
+	}
+
+	list_del(&node->list);
+	kfree(node);
+}
+
+static void otx2_qos_free_sw_node_schq(struct otx2_nic *pfvf,
+				       struct otx2_qos_node *parent)
+{
+	struct otx2_qos_node *node, *tmp;
+
+	list_for_each_entry_safe(node, tmp, &parent->child_schq_list, list) {
+		list_del(&node->list);
+		kfree(node);
+	}
+}
+
+static void __otx2_qos_free_sw_node(struct otx2_nic *pfvf,
+				    struct otx2_qos_node *parent)
+{
+	struct otx2_qos_node *node, *tmp;
+
+	list_for_each_entry_safe(node, tmp, &parent->child_list, list) {
+		__otx2_qos_free_sw_node(pfvf, node);
+		otx2_qos_free_sw_node_schq(pfvf, node);
+		otx2_qos_sw_node_delete(pfvf, node);
+	}
+}
+
+static void otx2_qos_free_sw_node(struct otx2_nic *pfvf,
+				  struct otx2_qos_node *node)
+{
+	mutex_lock(&pfvf->qos.qos_lock);
+
+	__otx2_qos_free_sw_node(pfvf, node);
+	otx2_qos_free_sw_node_schq(pfvf, node);
+	otx2_qos_sw_node_delete(pfvf, node);
+
+	mutex_unlock(&pfvf->qos.qos_lock);
+}
+
+static void otx2_qos_destroy_node(struct otx2_nic *pfvf,
+				  struct otx2_qos_node *node)
+{
+	otx2_qos_free_hw_cfg(pfvf, node);
+	otx2_qos_free_sw_node(pfvf, node);
+}
+
+static void otx2_qos_fill_cfg_schq(struct otx2_qos_node *parent,
+				   struct otx2_qos_cfg *cfg)
+{
+	struct otx2_qos_node *node;
+
+	list_for_each_entry(node, &parent->child_schq_list, list)
+		cfg->schq[node->level]++;
+}
+
+static void otx2_qos_fill_cfg_tl(struct otx2_qos_node *parent,
+				 struct otx2_qos_cfg *cfg)
+{
+	struct otx2_qos_node *node;
+
+	list_for_each_entry(node, &parent->child_list, list) {
+		otx2_qos_fill_cfg_tl(node, cfg);
+		cfg->schq_contig[node->level]++;
+		otx2_qos_fill_cfg_schq(node, cfg);
+	}
+}
+
+static void otx2_qos_prepare_txschq_cfg(struct otx2_nic *pfvf,
+					struct otx2_qos_node *parent,
+					struct otx2_qos_cfg *cfg)
+{
+	mutex_lock(&pfvf->qos.qos_lock);
+	otx2_qos_fill_cfg_tl(parent, cfg);
+	mutex_unlock(&pfvf->qos.qos_lock);
+}
+
+static void otx2_qos_read_txschq_cfg_schq(struct otx2_qos_node *parent,
+					  struct otx2_qos_cfg *cfg)
+{
+	struct otx2_qos_node *node;
+	int cnt;
+
+	list_for_each_entry(node, &parent->child_schq_list, list) {
+		cnt = cfg->dwrr_node_pos[node->level];
+		cfg->schq_list[node->level][cnt] = node->schq;
+		cfg->schq[node->level]++;
+		cfg->dwrr_node_pos[node->level]++;
+	}
+}
+
+static void otx2_qos_read_txschq_cfg_tl(struct otx2_qos_node *parent,
+					struct otx2_qos_cfg *cfg)
+{
+	struct otx2_qos_node *node;
+	int cnt;
+
+	list_for_each_entry(node, &parent->child_list, list) {
+		otx2_qos_read_txschq_cfg_tl(node, cfg);
+		cnt = cfg->static_node_pos[node->level];
+		cfg->schq_contig_list[node->level][cnt] = node->schq;
+		cfg->schq_contig[node->level]++;
+		cfg->static_node_pos[node->level]++;
+		otx2_qos_read_txschq_cfg_schq(node, cfg);
+	}
+}
+
+static void otx2_qos_read_txschq_cfg(struct otx2_nic *pfvf,
+				     struct otx2_qos_node *node,
+				     struct otx2_qos_cfg *cfg)
+{
+	mutex_lock(&pfvf->qos.qos_lock);
+	otx2_qos_read_txschq_cfg_tl(node, cfg);
+	mutex_unlock(&pfvf->qos.qos_lock);
+}
+
+static struct otx2_qos_node *
+otx2_qos_alloc_root(struct otx2_nic *pfvf)
+{
+	struct otx2_qos_node *node;
+
+	node = kzalloc(sizeof(*node), GFP_KERNEL);
+	if (!node)
+		return ERR_PTR(-ENOMEM);
+
+	node->parent = NULL;
+	if (!is_otx2_vf(pfvf->pcifunc))
+		node->level = NIX_TXSCH_LVL_TL1;
+	else
+		node->level = NIX_TXSCH_LVL_TL2;
+
+	WRITE_ONCE(node->qid, OTX2_QOS_QID_INNER);
+	node->classid = OTX2_QOS_ROOT_CLASSID;
+
+	hash_add_rcu(pfvf->qos.qos_hlist, &node->hlist, node->classid);
+	list_add_tail(&node->list, &pfvf->qos.qos_tree);
+	INIT_LIST_HEAD(&node->child_list);
+	INIT_LIST_HEAD(&node->child_schq_list);
+
+	return node;
+}
+
+static int otx2_qos_add_child_node(struct otx2_qos_node *parent,
+				   struct otx2_qos_node *node)
+{
+	struct list_head *head = &parent->child_list;
+	struct otx2_qos_node *tmp_node;
+	struct list_head *tmp;
+
+	for (tmp = head->next; tmp != head; tmp = tmp->next) {
+		tmp_node = list_entry(tmp, struct otx2_qos_node, list);
+		if (tmp_node->prio == node->prio)
+			return -EEXIST;
+		if (tmp_node->prio > node->prio) {
+			list_add_tail(&node->list, tmp);
+			return 0;
+		}
+	}
+
+	list_add_tail(&node->list, head);
+	return 0;
+}
+
+static int otx2_qos_alloc_txschq_node(struct otx2_nic *pfvf,
+				      struct otx2_qos_node *node)
+{
+	struct otx2_qos_node *txschq_node, *parent, *tmp;
+	int lvl;
+
+	parent = node;
+	for (lvl = node->level - 1; lvl >= NIX_TXSCH_LVL_MDQ; lvl--) {
+		txschq_node = kzalloc(sizeof(*txschq_node), GFP_KERNEL);
+		if (!txschq_node)
+			goto err_out;
+
+		txschq_node->parent = parent;
+		txschq_node->level = lvl;
+		txschq_node->classid = OTX2_QOS_CLASS_NONE;
+		WRITE_ONCE(txschq_node->qid, OTX2_QOS_QID_NONE);
+		txschq_node->rate = 0;
+		txschq_node->ceil = 0;
+		txschq_node->prio = 0;
+
+		mutex_lock(&pfvf->qos.qos_lock);
+		list_add_tail(&txschq_node->list, &node->child_schq_list);
+		mutex_unlock(&pfvf->qos.qos_lock);
+
+		INIT_LIST_HEAD(&txschq_node->child_list);
+		INIT_LIST_HEAD(&txschq_node->child_schq_list);
+		parent = txschq_node;
+	}
+
+	return 0;
+
+err_out:
+	list_for_each_entry_safe(txschq_node, tmp, &node->child_schq_list,
+				 list) {
+		list_del(&txschq_node->list);
+		kfree(txschq_node);
+	}
+	return -ENOMEM;
+}
+
+static struct otx2_qos_node *
+otx2_qos_sw_create_leaf_node(struct otx2_nic *pfvf,
+			     struct otx2_qos_node *parent,
+			     u16 classid, u32 prio, u64 rate, u64 ceil,
+			     u16 qid)
+{
+	struct otx2_qos_node *node;
+	int err;
+
+	node = kzalloc(sizeof(*node), GFP_KERNEL);
+	if (!node)
+		return ERR_PTR(-ENOMEM);
+
+	node->parent = parent;
+	node->level = parent->level - 1;
+	node->classid = classid;
+	WRITE_ONCE(node->qid, qid);
+
+	node->rate = otx2_convert_rate(rate);
+	node->ceil = otx2_convert_rate(ceil);
+	node->prio = prio;
+
+	__set_bit(qid, pfvf->qos.qos_sq_bmap);
+
+	hash_add_rcu(pfvf->qos.qos_hlist, &node->hlist, classid);
+
+	mutex_lock(&pfvf->qos.qos_lock);
+	err = otx2_qos_add_child_node(parent, node);
+	if (err) {
+		mutex_unlock(&pfvf->qos.qos_lock);
+		return ERR_PTR(err);
+	}
+	mutex_unlock(&pfvf->qos.qos_lock);
+
+	INIT_LIST_HEAD(&node->child_list);
+	INIT_LIST_HEAD(&node->child_schq_list);
+
+	err = otx2_qos_alloc_txschq_node(pfvf, node);
+	if (err) {
+		otx2_qos_sw_node_delete(pfvf, node);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	return node;
+}
+
+static struct otx2_qos_node *
+otx2_sw_node_find(struct otx2_nic *pfvf, u32 classid)
+{
+	struct otx2_qos_node *node = NULL;
+
+	hash_for_each_possible(pfvf->qos.qos_hlist, node, hlist, classid) {
+		if (node->classid == classid)
+			break;
+	}
+
+	return node;
+}
+
+static struct otx2_qos_node *
+otx2_sw_node_find_rcu(struct otx2_nic *pfvf, u32 classid)
+{
+	struct otx2_qos_node *node = NULL;
+
+	hash_for_each_possible_rcu(pfvf->qos.qos_hlist, node, hlist, classid) {
+		if (node->classid == classid)
+			break;
+	}
+
+	return node;
+}
+
+int otx2_get_txq_by_classid(struct otx2_nic *pfvf, u16 classid)
+{
+	struct otx2_qos_node *node;
+	u16 qid;
+	int res;
+
+	node = otx2_sw_node_find_rcu(pfvf, classid);
+	if (!node) {
+		res = -ENOENT;
+		goto out;
+	}
+	qid = READ_ONCE(node->qid);
+	if (qid == OTX2_QOS_QID_INNER) {
+		res = -EINVAL;
+		goto out;
+	}
+	res = pfvf->hw.tx_queues + qid;
+out:
+	return res;
+}
+
+static int
+otx2_qos_txschq_config(struct otx2_nic *pfvf, struct otx2_qos_node *node)
+{
+	struct mbox *mbox = &pfvf->mbox;
+	struct nix_txschq_config *req;
+	int rc;
+
+	mutex_lock(&mbox->lock);
+
+	req = otx2_mbox_alloc_msg_nix_txschq_cfg(&pfvf->mbox);
+	if (!req) {
+		mutex_unlock(&mbox->lock);
+		return -ENOMEM;
+	}
+
+	req->lvl = node->level;
+	__otx2_qos_txschq_cfg(pfvf, node, req);
+
+	rc = otx2_sync_mbox_msg(&pfvf->mbox);
+
+	mutex_unlock(&mbox->lock);
+
+	return rc;
+}
+
+static int otx2_qos_txschq_alloc(struct otx2_nic *pfvf,
+				 struct otx2_qos_cfg *cfg)
+{
+	struct nix_txsch_alloc_req *req;
+	struct nix_txsch_alloc_rsp *rsp;
+	struct mbox *mbox = &pfvf->mbox;
+	int lvl, rc, schq;
+
+	mutex_lock(&mbox->lock);
+	req = otx2_mbox_alloc_msg_nix_txsch_alloc(&pfvf->mbox);
+	if (!req) {
+		mutex_unlock(&mbox->lock);
+		return -ENOMEM;
+	}
+
+	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
+		req->schq[lvl] = cfg->schq[lvl];
+		req->schq_contig[lvl] = cfg->schq_contig[lvl];
+	}
+
+	rc = otx2_sync_mbox_msg(&pfvf->mbox);
+	if (rc) {
+		mutex_unlock(&mbox->lock);
+		return rc;
+	}
+
+	rsp = (struct nix_txsch_alloc_rsp *)
+	      otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);
+
+	if (IS_ERR(rsp)) {
+		rc = PTR_ERR(rsp);
+		goto out;
+	}
+
+	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
+		for (schq = 0; schq < rsp->schq_contig[lvl]; schq++) {
+			cfg->schq_contig_list[lvl][schq] =
+				rsp->schq_contig_list[lvl][schq];
+		}
+	}
+
+	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
+		for (schq = 0; schq < rsp->schq[lvl]; schq++) {
+			cfg->schq_list[lvl][schq] =
+				rsp->schq_list[lvl][schq];
+		}
+	}
+
+	pfvf->qos.link_cfg_lvl = rsp->link_cfg_lvl;
+
+out:
+	mutex_unlock(&mbox->lock);
+	return rc;
+}
+
+static void otx2_qos_txschq_fill_cfg_schq(struct otx2_nic *pfvf,
+					  struct otx2_qos_node *node,
+					  struct otx2_qos_cfg *cfg)
+{
+	struct otx2_qos_node *tmp;
+	int cnt;
+
+	list_for_each_entry(tmp, &node->child_schq_list, list) {
+		cnt = cfg->dwrr_node_pos[tmp->level];
+		tmp->schq = cfg->schq_list[tmp->level][cnt];
+		cfg->dwrr_node_pos[tmp->level]++;
+	}
+}
+
+static void otx2_qos_txschq_fill_cfg_tl(struct otx2_nic *pfvf,
+					struct otx2_qos_node *node,
+					struct otx2_qos_cfg *cfg)
+{
+	struct otx2_qos_node *tmp;
+	int cnt;
+
+	list_for_each_entry(tmp, &node->child_list, list) {
+		otx2_qos_txschq_fill_cfg_tl(pfvf, tmp, cfg);
+		cnt = cfg->static_node_pos[tmp->level];
+		tmp->schq = cfg->schq_contig_list[tmp->level][cnt];
+		if (cnt == 0)
+			node->prio_anchor = tmp->schq;
+		cfg->static_node_pos[tmp->level]++;
+		otx2_qos_txschq_fill_cfg_schq(pfvf, tmp, cfg);
+	}
+}
+
+static void otx2_qos_txschq_fill_cfg(struct otx2_nic *pfvf,
+				     struct otx2_qos_node *node,
+				     struct otx2_qos_cfg *cfg)
+{
+	mutex_lock(&pfvf->qos.qos_lock);
+	otx2_qos_txschq_fill_cfg_tl(pfvf, node, cfg);
+	otx2_qos_txschq_fill_cfg_schq(pfvf, node, cfg);
+	mutex_unlock(&pfvf->qos.qos_lock);
+}
+
+static int otx2_qos_txschq_push_cfg_schq(struct otx2_nic *pfvf,
+					 struct otx2_qos_node *node,
+					 struct otx2_qos_cfg *cfg)
+{
+	struct otx2_qos_node *tmp;
+	int ret;
+
+	list_for_each_entry(tmp, &node->child_schq_list, list) {
+		ret = otx2_qos_txschq_config(pfvf, tmp);
+		if (ret)
+			return -EIO;
+		ret = otx2_qos_txschq_set_parent_topology(pfvf, tmp->parent);
+		if (ret)
+			return -EIO;
+	}
+
+	return 0;
+}
+
+static int otx2_qos_txschq_push_cfg_tl(struct otx2_nic *pfvf,
+				       struct otx2_qos_node *node,
+				       struct otx2_qos_cfg *cfg)
+{
+	struct otx2_qos_node *tmp;
+	int ret;
+
+	list_for_each_entry(tmp, &node->child_list, list) {
+		ret = otx2_qos_txschq_push_cfg_tl(pfvf, tmp, cfg);
+		if (ret)
+			return -EIO;
+		ret = otx2_qos_txschq_config(pfvf, tmp);
+		if (ret)
+			return -EIO;
+		ret = otx2_qos_txschq_push_cfg_schq(pfvf, tmp, cfg);
+		if (ret)
+			return -EIO;
+	}
+
+	ret = otx2_qos_txschq_set_parent_topology(pfvf, node);
+	if (ret)
+		return -EIO;
+
+	return 0;
+}
+
+static int otx2_qos_txschq_push_cfg(struct otx2_nic *pfvf,
+				    struct otx2_qos_node *node,
+				    struct otx2_qos_cfg *cfg)
+{
+	int ret;
+
+	mutex_lock(&pfvf->qos.qos_lock);
+	ret = otx2_qos_txschq_push_cfg_tl(pfvf, node, cfg);
+	if (ret)
+		goto out;
+	ret = otx2_qos_txschq_push_cfg_schq(pfvf, node, cfg);
+out:
+	mutex_unlock(&pfvf->qos.qos_lock);
+	return ret;
+}
+
+static int otx2_qos_txschq_update_config(struct otx2_nic *pfvf,
+					 struct otx2_qos_node *node,
+					 struct otx2_qos_cfg *cfg)
+{
+	otx2_qos_txschq_fill_cfg(pfvf, node, cfg);
+
+	return otx2_qos_txschq_push_cfg(pfvf, node, cfg);
+}
+
+static int otx2_qos_txschq_update_root_cfg(struct otx2_nic *pfvf,
+					   struct otx2_qos_node *root,
+					   struct otx2_qos_cfg *cfg)
+{
+	root->schq = cfg->schq_list[root->level][0];
+	return otx2_qos_txschq_config(pfvf, root);
+}
+
+static void otx2_qos_free_cfg(struct otx2_nic *pfvf, struct otx2_qos_cfg *cfg)
+{
+	int lvl, idx, schq;
+
+	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
+		for (idx = 0; idx < cfg->schq[lvl]; idx++) {
+			schq = cfg->schq_list[lvl][idx];
+			otx2_txschq_free_one(pfvf, lvl, schq);
+		}
+	}
+
+	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
+		for (idx = 0; idx < cfg->schq_contig[lvl]; idx++) {
+			schq = cfg->schq_contig_list[lvl][idx];
+			otx2_txschq_free_one(pfvf, lvl, schq);
+		}
+	}
+}
+
+static void otx2_qos_enadis_sq(struct otx2_nic *pfvf,
+			       struct otx2_qos_node *node,
+			       u16 qid)
+{
+	if (pfvf->qos.qid_to_sqmap[qid] != OTX2_QOS_INVALID_SQ)
+		otx2_qos_disable_sq(pfvf, qid);
+
+	pfvf->qos.qid_to_sqmap[qid] = node->schq;
+	otx2_qos_enable_sq(pfvf, qid);
+}
+
+static void otx2_qos_update_smq_schq(struct otx2_nic *pfvf,
+				     struct otx2_qos_node *node,
+				     bool action)
+{
+	struct otx2_qos_node *tmp;
+
+	if (node->qid == OTX2_QOS_QID_INNER)
+		return;
+
+	list_for_each_entry(tmp, &node->child_schq_list, list) {
+		if (tmp->level == NIX_TXSCH_LVL_MDQ) {
+			if (action == QOS_SMQ_FLUSH)
+				otx2_smq_flush(pfvf, tmp->schq);
+			else
+				otx2_qos_enadis_sq(pfvf, tmp, node->qid);
+		}
+	}
+}
+
+static void __otx2_qos_update_smq(struct otx2_nic *pfvf,
+				  struct otx2_qos_node *node,
+				  bool action)
+{
+	struct otx2_qos_node *tmp;
+
+	list_for_each_entry(tmp, &node->child_list, list) {
+		__otx2_qos_update_smq(pfvf, tmp, action);
+		if (tmp->qid == OTX2_QOS_QID_INNER)
+			continue;
+		if (tmp->level == NIX_TXSCH_LVL_MDQ) {
+			if (action == QOS_SMQ_FLUSH)
+				otx2_smq_flush(pfvf, tmp->schq);
+			else
+				otx2_qos_enadis_sq(pfvf, tmp, tmp->qid);
+		} else {
+			otx2_qos_update_smq_schq(pfvf, tmp, action);
+		}
+	}
+}
+
+static void otx2_qos_update_smq(struct otx2_nic *pfvf,
+				struct otx2_qos_node *node,
+				bool action)
+{
+	mutex_lock(&pfvf->qos.qos_lock);
+	__otx2_qos_update_smq(pfvf, node, action);
+	otx2_qos_update_smq_schq(pfvf, node, action);
+	mutex_unlock(&pfvf->qos.qos_lock);
+}
+
+static int otx2_qos_push_txschq_cfg(struct otx2_nic *pfvf,
+				    struct otx2_qos_node *node,
+				    struct otx2_qos_cfg *cfg)
+{
+	int ret;
+
+	ret = otx2_qos_txschq_alloc(pfvf, cfg);
+	if (ret)
+		return -ENOSPC;
+
+	if (!(pfvf->netdev->flags & IFF_UP)) {
+		otx2_qos_txschq_fill_cfg(pfvf, node, cfg);
+		return 0;
+	}
+
+	ret = otx2_qos_txschq_update_config(pfvf, node, cfg);
+	if (ret) {
+		otx2_qos_free_cfg(pfvf, cfg);
+		return -EIO;
+	}
+
+	otx2_qos_update_smq(pfvf, node, QOS_CFG_SQ);
+
+	return 0;
+}
+
+static int otx2_qos_update_tree(struct otx2_nic *pfvf,
+				struct otx2_qos_node *node,
+				struct otx2_qos_cfg *cfg)
+{
+	otx2_qos_prepare_txschq_cfg(pfvf, node->parent, cfg);
+	return otx2_qos_push_txschq_cfg(pfvf, node->parent, cfg);
+}
+
+static int otx2_qos_root_add(struct otx2_nic *pfvf, u16 htb_maj_id, u16 htb_defcls,
+			     struct netlink_ext_ack *extack)
+{
+	struct otx2_qos_cfg *new_cfg;
+	struct otx2_qos_node *root;
+	int err;
+
+	netdev_dbg(pfvf->netdev,
+		   "TC_HTB_CREATE: handle=0x%x defcls=0x%x\n",
+		   htb_maj_id, htb_defcls);
+
+	root = otx2_qos_alloc_root(pfvf);
+	if (IS_ERR(root)) {
+		err = PTR_ERR(root);
+		return err;
+	}
+
+	/* allocate txschq queue */
+	new_cfg = kzalloc(sizeof(*new_cfg), GFP_KERNEL);
+	if (!new_cfg) {
+		NL_SET_ERR_MSG_MOD(extack, "Memory allocation error");
+		err = -ENOMEM;
+		goto free_root_node;
+	}
+	/* allocate htb root node */
+	new_cfg->schq[root->level] = 1;
+	err = otx2_qos_txschq_alloc(pfvf, new_cfg);
+	if (err) {
+		NL_SET_ERR_MSG_MOD(extack, "Error allocating txschq");
+		goto free_root_node;
+	}
+
+	if (!(pfvf->netdev->flags & IFF_UP) ||
+	    root->level == NIX_TXSCH_LVL_TL1) {
+		root->schq = new_cfg->schq_list[root->level][0];
+		goto out;
+	}
+
+	/* update the txschq configuration in hw */
+	err = otx2_qos_txschq_update_root_cfg(pfvf, root, new_cfg);
+	if (err) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Error updating txschq configuration");
+		goto txschq_free;
+	}
+
+out:
+	WRITE_ONCE(pfvf->qos.defcls, htb_defcls);
+	/* Pairs with smp_load_acquire() in ndo_select_queue */
+	smp_store_release(&pfvf->qos.maj_id, htb_maj_id);
+	kfree(new_cfg);
+	return 0;
+
+txschq_free:
+	otx2_qos_free_cfg(pfvf, new_cfg);
+free_root_node:
+	kfree(new_cfg);
+	otx2_qos_sw_node_delete(pfvf, root);
+	return err;
+}
+
+static int otx2_qos_root_destroy(struct otx2_nic *pfvf)
+{
+	struct otx2_qos_node *root;
+
+	netdev_dbg(pfvf->netdev, "TC_HTB_DESTROY\n");
+
+	/* find root node */
+	root = otx2_sw_node_find(pfvf, OTX2_QOS_ROOT_CLASSID);
+	if (!root)
+		return -ENOENT;
+
+	/* free the hw mappings */
+	otx2_qos_destroy_node(pfvf, root);
+
+	return 0;
+}
+
+static int otx2_qos_validate_configuration(struct otx2_qos_node *parent,
+					   struct netlink_ext_ack *extack,
+					   struct otx2_nic *pfvf,
+					   u64 prio)
+{
+	if (test_bit(prio, parent->prio_bmap)) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Static priority child with same priority exists");
+		return -EEXIST;
+	}
+
+	if (prio == TXSCH_TL1_DFLT_RR_PRIO) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Priority is reserved for Round Robin");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int otx2_qos_leaf_alloc_queue(struct otx2_nic *pfvf, u16 classid,
+				     u32 parent_classid, u64 rate, u64 ceil,
+				     u64 prio, struct netlink_ext_ack *extack)
+{
+	struct otx2_qos_cfg *old_cfg, *new_cfg;
+	struct otx2_qos_node *node, *parent;
+	int qid, ret, err;
+
+	netdev_dbg(pfvf->netdev,
+		   "TC_HTB_LEAF_ALLOC_QUEUE: classid=0x%x parent_classid=0x%x rate=%lld ceil=%lld prio=%lld\n",
+		   classid, parent_classid, rate, ceil, prio);
+
+	if (prio > OTX2_QOS_MAX_PRIO) {
+		NL_SET_ERR_MSG_MOD(extack, "Valid priority range 0 to 7");
+		ret = -EOPNOTSUPP;
+		goto out;
+	}
+
+	/* get parent node */
+	parent = otx2_sw_node_find(pfvf, parent_classid);
+	if (!parent) {
+		NL_SET_ERR_MSG_MOD(extack, "parent node not found");
+		ret = -ENOENT;
+		goto out;
+	}
+	if (parent->level == NIX_TXSCH_LVL_MDQ) {
+		NL_SET_ERR_MSG_MOD(extack, "HTB qos max levels reached");
+		ret = -EOPNOTSUPP;
+		goto out;
+	}
+
+	ret = otx2_qos_validate_configuration(parent, extack, pfvf, prio);
+	if (ret)
+		goto out;
+
+	set_bit(prio, parent->prio_bmap);
+
+	/* read current txschq configuration */
+	old_cfg = kzalloc(sizeof(*old_cfg), GFP_KERNEL);
+	if (!old_cfg) {
+		NL_SET_ERR_MSG_MOD(extack, "Memory allocation error");
+		ret = -ENOMEM;
+		goto reset_prio;
+	}
+	otx2_qos_read_txschq_cfg(pfvf, parent, old_cfg);
+
+	/* allocate a new sq */
+	qid = otx2_qos_get_qid(pfvf);
+	if (qid < 0) {
+		NL_SET_ERR_MSG_MOD(extack, "Reached max supported QOS SQ's");
+		ret = -ENOMEM;
+		goto free_old_cfg;
+	}
+
+	/* Actual SQ mapping will be updated after SMQ alloc */
+	pfvf->qos.qid_to_sqmap[qid] = OTX2_QOS_INVALID_SQ;
+
+	/* allocate and initialize a new child node */
+	node = otx2_qos_sw_create_leaf_node(pfvf, parent, classid, prio, rate,
+					    ceil, qid);
+	if (IS_ERR(node)) {
+		NL_SET_ERR_MSG_MOD(extack, "Unable to allocate leaf node");
+		ret = PTR_ERR(node);
+		goto free_old_cfg;
+	}
+
+	/* push new txschq config to hw */
+	new_cfg = kzalloc(sizeof(*new_cfg), GFP_KERNEL);
+	if (!new_cfg) {
+		NL_SET_ERR_MSG_MOD(extack, "Memory allocation error");
+		ret = -ENOMEM;
+		goto free_node;
+	}
+	ret = otx2_qos_update_tree(pfvf, node, new_cfg);
+	if (ret) {
+		NL_SET_ERR_MSG_MOD(extack, "HTB HW configuration error");
+		kfree(new_cfg);
+		otx2_qos_sw_node_delete(pfvf, node);
+		/* restore the old qos tree */
+		err = otx2_qos_txschq_update_config(pfvf, parent, old_cfg);
+		if (err) {
+			netdev_err(pfvf->netdev,
+				   "Failed to restore txcshq configuration");
+			goto free_old_cfg;
+		}
+
+		otx2_qos_update_smq(pfvf, parent, QOS_CFG_SQ);
+		goto free_old_cfg;
+	}
+
+	/* update tx_real_queues */
+	otx2_qos_update_tx_netdev_queues(pfvf);
+
+	/* free new txschq config */
+	kfree(new_cfg);
+
+	/* free old txschq config */
+	otx2_qos_free_cfg(pfvf, old_cfg);
+	kfree(old_cfg);
+
+	return pfvf->hw.tx_queues + qid;
+
+free_node:
+	otx2_qos_sw_node_delete(pfvf, node);
+free_old_cfg:
+	kfree(old_cfg);
+reset_prio:
+	clear_bit(prio, parent->prio_bmap);
+out:
+	return ret;
+}
+
+static int otx2_qos_leaf_to_inner(struct otx2_nic *pfvf, u16 classid,
+				  u16 child_classid, u64 rate, u64 ceil, u64 prio,
+				  struct netlink_ext_ack *extack)
+{
+	struct otx2_qos_cfg *old_cfg, *new_cfg;
+	struct otx2_qos_node *node, *child;
+	int ret, err;
+	u16 qid;
+
+	netdev_dbg(pfvf->netdev,
+		   "TC_HTB_LEAF_TO_INNER classid %04x, child %04x, rate %llu, ceil %llu\n",
+		   classid, child_classid, rate, ceil);
+
+	if (prio > OTX2_QOS_MAX_PRIO) {
+		NL_SET_ERR_MSG_MOD(extack, "Valid priority range 0 to 7");
+		ret = -EOPNOTSUPP;
+		goto out;
+	}
+
+	/* find node related to classid */
+	node = otx2_sw_node_find(pfvf, classid);
+	if (!node) {
+		NL_SET_ERR_MSG_MOD(extack, "HTB node not found");
+		ret = -ENOENT;
+		goto out;
+	}
+	/* check max qos txschq level */
+	if (node->level == NIX_TXSCH_LVL_MDQ) {
+		NL_SET_ERR_MSG_MOD(extack, "HTB qos level not supported");
+		ret = -EOPNOTSUPP;
+		goto out;
+	}
+
+	set_bit(prio, node->prio_bmap);
+
+	/* store the qid to assign to leaf node */
+	qid = node->qid;
+
+	/* read current txschq configuration */
+	old_cfg = kzalloc(sizeof(*old_cfg), GFP_KERNEL);
+	if (!old_cfg) {
+		NL_SET_ERR_MSG_MOD(extack, "Memory allocation error");
+		ret = -ENOMEM;
+		goto reset_prio;
+	}
+	otx2_qos_read_txschq_cfg(pfvf, node, old_cfg);
+
+	/* delete the txschq nodes allocated for this node */
+	otx2_qos_free_sw_node_schq(pfvf, node);
+
+	/* mark this node as htb inner node */
+	WRITE_ONCE(node->qid, OTX2_QOS_QID_INNER);
+
+	/* allocate and initialize a new child node */
+	child = otx2_qos_sw_create_leaf_node(pfvf, node, child_classid,
+					     prio, rate, ceil, qid);
+	if (IS_ERR(child)) {
+		NL_SET_ERR_MSG_MOD(extack, "Unable to allocate leaf node");
+		ret = PTR_ERR(child);
+		goto free_old_cfg;
+	}
+
+	/* push new txschq config to hw */
+	new_cfg = kzalloc(sizeof(*new_cfg), GFP_KERNEL);
+	if (!new_cfg) {
+		NL_SET_ERR_MSG_MOD(extack, "Memory allocation error");
+		ret = -ENOMEM;
+		goto free_node;
+	}
+	ret = otx2_qos_update_tree(pfvf, child, new_cfg);
+	if (ret) {
+		NL_SET_ERR_MSG_MOD(extack, "HTB HW configuration error");
+		kfree(new_cfg);
+		otx2_qos_sw_node_delete(pfvf, child);
+		/* restore the old qos tree */
+		WRITE_ONCE(node->qid, qid);
+		err = otx2_qos_alloc_txschq_node(pfvf, node);
+		if (err) {
+			netdev_err(pfvf->netdev,
+				   "Failed to restore old leaf node");
+			goto free_old_cfg;
+		}
+		err = otx2_qos_txschq_update_config(pfvf, node, old_cfg);
+		if (err) {
+			netdev_err(pfvf->netdev,
+				   "Failed to restore txcshq configuration");
+			goto free_old_cfg;
+		}
+		otx2_qos_update_smq(pfvf, node, QOS_CFG_SQ);
+		goto free_old_cfg;
+	}
+
+	/* free new txschq config */
+	kfree(new_cfg);
+
+	/* free old txschq config */
+	otx2_qos_free_cfg(pfvf, old_cfg);
+	kfree(old_cfg);
+
+	return 0;
+
+free_node:
+	otx2_qos_sw_node_delete(pfvf, child);
+free_old_cfg:
+	kfree(old_cfg);
+reset_prio:
+	clear_bit(prio, node->prio_bmap);
+out:
+	return ret;
+}
+
+static int otx2_qos_leaf_del(struct otx2_nic *pfvf, u16 *classid,
+			     struct netlink_ext_ack *extack)
+{
+	struct otx2_qos_node *node, *parent;
+	u64 prio;
+	u16 qid;
+
+	netdev_dbg(pfvf->netdev, "TC_HTB_LEAF_DEL classid %04x\n", *classid);
+
+	/* find node related to classid */
+	node = otx2_sw_node_find(pfvf, *classid);
+	if (!node) {
+		NL_SET_ERR_MSG_MOD(extack, "HTB node not found");
+		return -ENOENT;
+	}
+	parent = node->parent;
+	prio   = node->prio;
+	qid    = node->qid;
+
+	otx2_qos_disable_sq(pfvf, node->qid);
+
+	otx2_qos_destroy_node(pfvf, node);
+	pfvf->qos.qid_to_sqmap[qid] = OTX2_QOS_INVALID_SQ;
+
+	clear_bit(prio, parent->prio_bmap);
+
+	return 0;
+}
+
+static int otx2_qos_leaf_del_last(struct otx2_nic *pfvf, u16 classid, bool force,
+				  struct netlink_ext_ack *extack)
+{
+	struct otx2_qos_node *node, *parent;
+	struct otx2_qos_cfg *new_cfg;
+	u64 prio;
+	int err;
+	u16 qid;
+
+	netdev_dbg(pfvf->netdev,
+		   "TC_HTB_LEAF_DEL_LAST classid %04x\n", classid);
+
+	/* find node related to classid */
+	node = otx2_sw_node_find(pfvf, classid);
+	if (!node) {
+		NL_SET_ERR_MSG_MOD(extack, "HTB node not found");
+		return -ENOENT;
+	}
+
+	/* save qid for use by parent */
+	qid = node->qid;
+	prio = node->prio;
+
+	parent = otx2_sw_node_find(pfvf, node->parent->classid);
+	if (!parent) {
+		NL_SET_ERR_MSG_MOD(extack, "parent node not found");
+		return -ENOENT;
+	}
+
+	/* destroy the leaf node */
+	otx2_qos_destroy_node(pfvf, node);
+	pfvf->qos.qid_to_sqmap[qid] = OTX2_QOS_INVALID_SQ;
+
+	clear_bit(prio, parent->prio_bmap);
+
+	/* create downstream txschq entries to parent */
+	err = otx2_qos_alloc_txschq_node(pfvf, parent);
+	if (err) {
+		NL_SET_ERR_MSG_MOD(extack, "HTB failed to create txsch configuration");
+		return err;
+	}
+	WRITE_ONCE(parent->qid, qid);
+	__set_bit(qid, pfvf->qos.qos_sq_bmap);
+
+	/* push new txschq config to hw */
+	new_cfg = kzalloc(sizeof(*new_cfg), GFP_KERNEL);
+	if (!new_cfg) {
+		NL_SET_ERR_MSG_MOD(extack, "Memory allocation error");
+		return -ENOMEM;
+	}
+	/* fill txschq cfg and push txschq cfg to hw */
+	otx2_qos_fill_cfg_schq(parent, new_cfg);
+	err = otx2_qos_push_txschq_cfg(pfvf, parent, new_cfg);
+	if (err) {
+		NL_SET_ERR_MSG_MOD(extack, "HTB HW configuration error");
+		kfree(new_cfg);
+		return err;
+	}
+	kfree(new_cfg);
+
+	/* update tx_real_queues */
+	otx2_qos_update_tx_netdev_queues(pfvf);
+
+	return 0;
+}
+
+void otx2_clean_qos_queues(struct otx2_nic *pfvf)
+{
+	struct otx2_qos_node *root;
+
+	root = otx2_sw_node_find(pfvf, OTX2_QOS_ROOT_CLASSID);
+	if (!root)
+		return;
+
+	otx2_qos_update_smq(pfvf, root, QOS_SMQ_FLUSH);
+}
+
+void otx2_qos_config_txschq(struct otx2_nic *pfvf)
+{
+	struct otx2_qos_node *root;
+	int err;
+
+	root = otx2_sw_node_find(pfvf, OTX2_QOS_ROOT_CLASSID);
+	if (!root)
+		return;
+
+	err = otx2_qos_txschq_config(pfvf, root);
+	if (err) {
+		netdev_err(pfvf->netdev, "Error update txschq configuration\n");
+		goto root_destroy;
+	}
+
+	err = otx2_qos_txschq_push_cfg_tl(pfvf, root, NULL);
+	if (err) {
+		netdev_err(pfvf->netdev, "Error update txschq configuration\n");
+		goto root_destroy;
+	}
+
+	otx2_qos_update_smq(pfvf, root, QOS_CFG_SQ);
+	return;
+
+root_destroy:
+	netdev_err(pfvf->netdev, "Failed to update Scheduler/Shaping config in Hardware\n");
+	/* Free resources allocated */
+	otx2_qos_root_destroy(pfvf);
+}
+
+int otx2_setup_tc_htb(struct net_device *ndev, struct tc_htb_qopt_offload *htb)
+{
+	struct otx2_nic *pfvf = netdev_priv(ndev);
+	int res;
+
+	switch (htb->command) {
+	case TC_HTB_CREATE:
+		return otx2_qos_root_add(pfvf, htb->parent_classid,
+					 htb->classid, htb->extack);
+	case TC_HTB_DESTROY:
+		return otx2_qos_root_destroy(pfvf);
+	case TC_HTB_LEAF_ALLOC_QUEUE:
+		res = otx2_qos_leaf_alloc_queue(pfvf, htb->classid,
+						htb->parent_classid,
+						htb->rate, htb->ceil,
+						htb->prio, htb->extack);
+		if (res < 0)
+			return res;
+		htb->qid = res;
+		return 0;
+	case TC_HTB_LEAF_TO_INNER:
+		return otx2_qos_leaf_to_inner(pfvf, htb->parent_classid,
+					      htb->classid, htb->rate,
+					      htb->ceil, htb->prio,
+					      htb->extack);
+	case TC_HTB_LEAF_DEL:
+		return otx2_qos_leaf_del(pfvf, &htb->classid, htb->extack);
+	case TC_HTB_LEAF_DEL_LAST:
+	case TC_HTB_LEAF_DEL_LAST_FORCE:
+		return otx2_qos_leaf_del_last(pfvf, htb->classid,
+				htb->command == TC_HTB_LEAF_DEL_LAST_FORCE,
+					      htb->extack);
+	case TC_HTB_LEAF_QUERY_QUEUE:
+		res = otx2_get_txq_by_classid(pfvf, htb->classid);
+		htb->qid = res;
+		return 0;
+	case TC_HTB_NODE_MODIFY:
+		fallthrough;
+	default:
+		return -EOPNOTSUPP;
+	}
+}