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, 407 insertions, 0 deletions

diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c b/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c
new file mode 100644
index 000000000..871a3e62f
--- /dev/null
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c
@@ -0,0 +1,407 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Microchip Sparx5 Switch driver
+ *
+ * Copyright (c) 2022 Microchip Technology Inc. and its subsidiaries.
+ */
+
+#include <net/dcbnl.h>
+
+#include "sparx5_port.h"
+
+enum sparx5_dcb_apptrust_values {
+	SPARX5_DCB_APPTRUST_EMPTY,
+	SPARX5_DCB_APPTRUST_DSCP,
+	SPARX5_DCB_APPTRUST_PCP,
+	SPARX5_DCB_APPTRUST_DSCP_PCP,
+	__SPARX5_DCB_APPTRUST_MAX
+};
+
+static const struct sparx5_dcb_apptrust {
+	u8 selectors[IEEE_8021QAZ_APP_SEL_MAX + 1];
+	int nselectors;
+} *sparx5_port_apptrust[SPX5_PORTS];
+
+static const char *sparx5_dcb_apptrust_names[__SPARX5_DCB_APPTRUST_MAX] = {
+	[SPARX5_DCB_APPTRUST_EMPTY]    = "empty",
+	[SPARX5_DCB_APPTRUST_DSCP]     = "dscp",
+	[SPARX5_DCB_APPTRUST_PCP]      = "pcp",
+	[SPARX5_DCB_APPTRUST_DSCP_PCP] = "dscp pcp"
+};
+
+/* Sparx5 supported apptrust policies */
+static const struct sparx5_dcb_apptrust
+	sparx5_dcb_apptrust_policies[__SPARX5_DCB_APPTRUST_MAX] = {
+	/* Empty *must* be first */
+	[SPARX5_DCB_APPTRUST_EMPTY]    = { { 0 }, 0 },
+	[SPARX5_DCB_APPTRUST_DSCP]     = { { IEEE_8021QAZ_APP_SEL_DSCP }, 1 },
+	[SPARX5_DCB_APPTRUST_PCP]      = { { DCB_APP_SEL_PCP }, 1 },
+	[SPARX5_DCB_APPTRUST_DSCP_PCP] = { { IEEE_8021QAZ_APP_SEL_DSCP,
+					     DCB_APP_SEL_PCP }, 2 },
+};
+
+/* Validate app entry.
+ *
+ * Check for valid selectors and valid protocol and priority ranges.
+ */
+static int sparx5_dcb_app_validate(struct net_device *dev,
+				   const struct dcb_app *app)
+{
+	int err = 0;
+
+	switch (app->selector) {
+	/* Default priority checks */
+	case IEEE_8021QAZ_APP_SEL_ETHERTYPE:
+		if (app->protocol != 0)
+			err = -EINVAL;
+		else if (app->priority >= SPX5_PRIOS)
+			err = -ERANGE;
+		break;
+	/* Dscp checks */
+	case IEEE_8021QAZ_APP_SEL_DSCP:
+		if (app->protocol >= SPARX5_PORT_QOS_DSCP_COUNT)
+			err = -EINVAL;
+		else if (app->priority >= SPX5_PRIOS)
+			err = -ERANGE;
+		break;
+	/* Pcp checks */
+	case DCB_APP_SEL_PCP:
+		if (app->protocol >= SPARX5_PORT_QOS_PCP_DEI_COUNT)
+			err = -EINVAL;
+		else if (app->priority >= SPX5_PRIOS)
+			err = -ERANGE;
+		break;
+	default:
+		err = -EINVAL;
+		break;
+	}
+
+	if (err)
+		netdev_err(dev, "Invalid entry: %d:%d\n", app->protocol,
+			   app->priority);
+
+	return err;
+}
+
+/* Validate apptrust configuration.
+ *
+ * Return index of supported apptrust configuration if valid, otherwise return
+ * error.
+ */
+static int sparx5_dcb_apptrust_validate(struct net_device *dev, u8 *selectors,
+					int nselectors, int *err)
+{
+	bool match = false;
+	int i, ii;
+
+	for (i = 0; i < ARRAY_SIZE(sparx5_dcb_apptrust_policies); i++) {
+		if (sparx5_dcb_apptrust_policies[i].nselectors != nselectors)
+			continue;
+		match = true;
+		for (ii = 0; ii < nselectors; ii++) {
+			if (sparx5_dcb_apptrust_policies[i].selectors[ii] !=
+			    *(selectors + ii)) {
+				match = false;
+				break;
+			}
+		}
+		if (match)
+			break;
+	}
+
+	/* Requested trust configuration is not supported */
+	if (!match) {
+		netdev_err(dev, "Valid apptrust configurations are:\n");
+		for (i = 0; i < ARRAY_SIZE(sparx5_dcb_apptrust_names); i++)
+			pr_info("order: %s\n", sparx5_dcb_apptrust_names[i]);
+		*err = -EOPNOTSUPP;
+	}
+
+	return i;
+}
+
+static bool sparx5_dcb_apptrust_contains(int portno, u8 selector)
+{
+	const struct sparx5_dcb_apptrust *conf = sparx5_port_apptrust[portno];
+	int i;
+
+	for (i = 0; i < conf->nselectors; i++)
+		if (conf->selectors[i] == selector)
+			return true;
+
+	return false;
+}
+
+static int sparx5_dcb_app_update(struct net_device *dev)
+{
+	struct dcb_ieee_app_prio_map dscp_rewr_map = {0};
+	struct dcb_rewr_prio_pcp_map pcp_rewr_map = {0};
+	struct sparx5_port *port = netdev_priv(dev);
+	struct sparx5_port_qos_dscp_map *dscp_map;
+	struct sparx5_port_qos_pcp_map *pcp_map;
+	struct sparx5_port_qos qos = {0};
+	struct dcb_app app_itr = {0};
+	int portno = port->portno;
+	bool dscp_rewr = false;
+	bool pcp_rewr = false;
+	u16 dscp;
+	int i;
+
+	dscp_map = &qos.dscp.map;
+	pcp_map = &qos.pcp.map;
+
+	/* Get default prio. */
+	qos.default_prio = dcb_ieee_getapp_default_prio_mask(dev);
+	if (qos.default_prio)
+		qos.default_prio = fls(qos.default_prio) - 1;
+
+	/* Get dscp ingress mapping */
+	for (i = 0; i < ARRAY_SIZE(dscp_map->map); i++) {
+		app_itr.selector = IEEE_8021QAZ_APP_SEL_DSCP;
+		app_itr.protocol = i;
+		dscp_map->map[i] = dcb_getapp(dev, &app_itr);
+	}
+
+	/* Get pcp ingress mapping */
+	for (i = 0; i < ARRAY_SIZE(pcp_map->map); i++) {
+		app_itr.selector = DCB_APP_SEL_PCP;
+		app_itr.protocol = i;
+		pcp_map->map[i] = dcb_getapp(dev, &app_itr);
+	}
+
+	/* Get pcp rewrite mapping */
+	dcb_getrewr_prio_pcp_mask_map(dev, &pcp_rewr_map);
+	for (i = 0; i < ARRAY_SIZE(pcp_rewr_map.map); i++) {
+		if (!pcp_rewr_map.map[i])
+			continue;
+		pcp_rewr = true;
+		qos.pcp_rewr.map.map[i] = fls(pcp_rewr_map.map[i]) - 1;
+	}
+
+	/* Get dscp rewrite mapping */
+	dcb_getrewr_prio_dscp_mask_map(dev, &dscp_rewr_map);
+	for (i = 0; i < ARRAY_SIZE(dscp_rewr_map.map); i++) {
+		if (!dscp_rewr_map.map[i])
+			continue;
+
+		/* The rewrite table of the switch has 32 entries; one for each
+		 * priority for each DP level. Currently, the rewrite map does
+		 * not indicate DP level, so we map classified QoS class to
+		 * classified DSCP, for each classified DP level. Rewrite of
+		 * DSCP is only enabled, if we have active mappings.
+		 */
+		dscp_rewr = true;
+		dscp = fls64(dscp_rewr_map.map[i]) - 1;
+		qos.dscp_rewr.map.map[i] = dscp;      /* DP 0 */
+		qos.dscp_rewr.map.map[i + 8] = dscp;  /* DP 1 */
+		qos.dscp_rewr.map.map[i + 16] = dscp; /* DP 2 */
+		qos.dscp_rewr.map.map[i + 24] = dscp; /* DP 3 */
+	}
+
+	/* Enable use of pcp for queue classification ? */
+	if (sparx5_dcb_apptrust_contains(portno, DCB_APP_SEL_PCP)) {
+		qos.pcp.qos_enable = true;
+		qos.pcp.dp_enable = qos.pcp.qos_enable;
+		/* Enable rewrite of PCP and DEI if PCP is trusted *and* rewrite
+		 * table is not empty.
+		 */
+		if (pcp_rewr)
+			qos.pcp_rewr.enable = true;
+	}
+
+	/* Enable use of dscp for queue classification ? */
+	if (sparx5_dcb_apptrust_contains(portno, IEEE_8021QAZ_APP_SEL_DSCP)) {
+		qos.dscp.qos_enable = true;
+		qos.dscp.dp_enable = qos.dscp.qos_enable;
+		if (dscp_rewr)
+			/* Do not enable rewrite if no mappings are active, as
+			 * classified DSCP will then be zero for all classified
+			 * QoS class and DP combinations.
+			 */
+			qos.dscp_rewr.enable = true;
+	}
+
+	return sparx5_port_qos_set(port, &qos);
+}
+
+/* Set or delete DSCP app entry.
+ *
+ * DSCP mapping is global for all ports, so set and delete app entries are
+ * replicated for each port.
+ */
+static int sparx5_dcb_ieee_dscp_setdel(struct net_device *dev,
+				       struct dcb_app *app,
+				       int (*setdel)(struct net_device *,
+						     struct dcb_app *))
+{
+	struct sparx5_port *port = netdev_priv(dev);
+	struct sparx5_port *port_itr;
+	int err, i;
+
+	for (i = 0; i < SPX5_PORTS; i++) {
+		port_itr = port->sparx5->ports[i];
+		if (!port_itr)
+			continue;
+		err = setdel(port_itr->ndev, app);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int sparx5_dcb_ieee_setapp(struct net_device *dev, struct dcb_app *app)
+{
+	struct dcb_app app_itr;
+	int err = 0;
+	u8 prio;
+
+	err = sparx5_dcb_app_validate(dev, app);
+	if (err)
+		goto out;
+
+	/* Delete current mapping, if it exists */
+	prio = dcb_getapp(dev, app);
+	if (prio) {
+		app_itr = *app;
+		app_itr.priority = prio;
+		dcb_ieee_delapp(dev, &app_itr);
+	}
+
+	if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
+		err = sparx5_dcb_ieee_dscp_setdel(dev, app, dcb_ieee_setapp);
+	else
+		err = dcb_ieee_setapp(dev, app);
+
+	if (err)
+		goto out;
+
+	sparx5_dcb_app_update(dev);
+
+out:
+	return err;
+}
+
+static int sparx5_dcb_ieee_delapp(struct net_device *dev, struct dcb_app *app)
+{
+	int err;
+
+	if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
+		err = sparx5_dcb_ieee_dscp_setdel(dev, app, dcb_ieee_delapp);
+	else
+		err = dcb_ieee_delapp(dev, app);
+
+	if (err < 0)
+		return err;
+
+	return sparx5_dcb_app_update(dev);
+}
+
+static int sparx5_dcb_setapptrust(struct net_device *dev, u8 *selectors,
+				  int nselectors)
+{
+	struct sparx5_port *port = netdev_priv(dev);
+	int err = 0, idx;
+
+	idx = sparx5_dcb_apptrust_validate(dev, selectors, nselectors, &err);
+	if (err < 0)
+		return err;
+
+	sparx5_port_apptrust[port->portno] = &sparx5_dcb_apptrust_policies[idx];
+
+	return sparx5_dcb_app_update(dev);
+}
+
+static int sparx5_dcb_getapptrust(struct net_device *dev, u8 *selectors,
+				  int *nselectors)
+{
+	struct sparx5_port *port = netdev_priv(dev);
+	const struct sparx5_dcb_apptrust *trust;
+
+	trust = sparx5_port_apptrust[port->portno];
+
+	memcpy(selectors, trust->selectors, trust->nselectors);
+	*nselectors = trust->nselectors;
+
+	return 0;
+}
+
+static int sparx5_dcb_delrewr(struct net_device *dev, struct dcb_app *app)
+{
+	int err;
+
+	if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
+		err = sparx5_dcb_ieee_dscp_setdel(dev, app, dcb_delrewr);
+	else
+		err = dcb_delrewr(dev, app);
+
+	if (err < 0)
+		return err;
+
+	return sparx5_dcb_app_update(dev);
+}
+
+static int sparx5_dcb_setrewr(struct net_device *dev, struct dcb_app *app)
+{
+	struct dcb_app app_itr;
+	int err = 0;
+	u16 proto;
+
+	err = sparx5_dcb_app_validate(dev, app);
+	if (err)
+		goto out;
+
+	/* Delete current mapping, if it exists. */
+	proto = dcb_getrewr(dev, app);
+	if (proto) {
+		app_itr = *app;
+		app_itr.protocol = proto;
+		sparx5_dcb_delrewr(dev, &app_itr);
+	}
+
+	if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
+		err = sparx5_dcb_ieee_dscp_setdel(dev, app, dcb_setrewr);
+	else
+		err = dcb_setrewr(dev, app);
+
+	if (err)
+		goto out;
+
+	sparx5_dcb_app_update(dev);
+
+out:
+	return err;
+}
+
+const struct dcbnl_rtnl_ops sparx5_dcbnl_ops = {
+	.ieee_setapp = sparx5_dcb_ieee_setapp,
+	.ieee_delapp = sparx5_dcb_ieee_delapp,
+	.dcbnl_setapptrust = sparx5_dcb_setapptrust,
+	.dcbnl_getapptrust = sparx5_dcb_getapptrust,
+	.dcbnl_setrewr = sparx5_dcb_setrewr,
+	.dcbnl_delrewr = sparx5_dcb_delrewr,
+};
+
+int sparx5_dcb_init(struct sparx5 *sparx5)
+{
+	struct sparx5_port *port;
+	int i;
+
+	for (i = 0; i < SPX5_PORTS; i++) {
+		port = sparx5->ports[i];
+		if (!port)
+			continue;
+		port->ndev->dcbnl_ops = &sparx5_dcbnl_ops;
+		/* Initialize [dscp, pcp] default trust */
+		sparx5_port_apptrust[port->portno] =
+			&sparx5_dcb_apptrust_policies
+				[SPARX5_DCB_APPTRUST_DSCP_PCP];
+
+		/* Enable DSCP classification based on classified QoS class and
+		 * DP, for all DSCP values, for all ports.
+		 */
+		sparx5_port_qos_dscp_rewr_mode_set(port,
+						   SPARX5_PORT_REW_DSCP_ALL);
+	}
+
+	return 0;
+}