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, 1281 insertions, 0 deletions

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c
new file mode 100644
index 000000000..7d5204834
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c
@@ -0,0 +1,1281 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  Copyright (C) 2013-2014 Chelsio Communications.  All rights reserved.
+ *
+ *  Written by Anish Bhatt (anish@chelsio.com)
+ *	       Casey Leedom (leedom@chelsio.com)
+ */
+
+#include "cxgb4.h"
+
+/* DCBx version control
+ */
+const char * const dcb_ver_array[] = {
+	"Unknown",
+	"DCBx-CIN",
+	"DCBx-CEE 1.01",
+	"DCBx-IEEE",
+	"", "", "",
+	"Auto Negotiated"
+};
+
+static inline bool cxgb4_dcb_state_synced(enum cxgb4_dcb_state state)
+{
+	if (state == CXGB4_DCB_STATE_FW_ALLSYNCED ||
+	    state == CXGB4_DCB_STATE_HOST)
+		return true;
+	else
+		return false;
+}
+
+/* Initialize a port's Data Center Bridging state.
+ */
+void cxgb4_dcb_state_init(struct net_device *dev)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+	struct port_dcb_info *dcb = &pi->dcb;
+	int version_temp = dcb->dcb_version;
+
+	memset(dcb, 0, sizeof(struct port_dcb_info));
+	dcb->state = CXGB4_DCB_STATE_START;
+	if (version_temp)
+		dcb->dcb_version = version_temp;
+
+	netdev_dbg(dev, "%s: Initializing DCB state for port[%d]\n",
+		    __func__, pi->port_id);
+}
+
+void cxgb4_dcb_version_init(struct net_device *dev)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+	struct port_dcb_info *dcb = &pi->dcb;
+
+	/* Any writes here are only done on kernels that exlicitly need
+	 * a specific version, say < 2.6.38 which only support CEE
+	 */
+	dcb->dcb_version = FW_PORT_DCB_VER_AUTO;
+}
+
+static void cxgb4_dcb_cleanup_apps(struct net_device *dev)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+	struct adapter *adap = pi->adapter;
+	struct port_dcb_info *dcb = &pi->dcb;
+	struct dcb_app app;
+	int i, err;
+
+	/* zero priority implies remove */
+	app.priority = 0;
+
+	for (i = 0; i < CXGB4_MAX_DCBX_APP_SUPPORTED; i++) {
+		/* Check if app list is exhausted */
+		if (!dcb->app_priority[i].protocolid)
+			break;
+
+		app.protocol = dcb->app_priority[i].protocolid;
+
+		if (dcb->dcb_version == FW_PORT_DCB_VER_IEEE) {
+			app.priority = dcb->app_priority[i].user_prio_map;
+			app.selector = dcb->app_priority[i].sel_field + 1;
+			err = dcb_ieee_delapp(dev, &app);
+		} else {
+			app.selector = !!(dcb->app_priority[i].sel_field);
+			err = dcb_setapp(dev, &app);
+		}
+
+		if (err) {
+			dev_err(adap->pdev_dev,
+				"Failed DCB Clear %s Application Priority: sel=%d, prot=%d, err=%d\n",
+				dcb_ver_array[dcb->dcb_version], app.selector,
+				app.protocol, -err);
+			break;
+		}
+	}
+}
+
+/* Reset a port's Data Center Bridging state.  Typically used after a
+ * Link Down event.
+ */
+void cxgb4_dcb_reset(struct net_device *dev)
+{
+	cxgb4_dcb_cleanup_apps(dev);
+	cxgb4_dcb_state_init(dev);
+}
+
+/* update the dcb port support, if version is IEEE then set it to
+ * FW_PORT_DCB_VER_IEEE and if DCB_CAP_DCBX_VER_CEE is already set then
+ * clear that. and if it is set to CEE then set dcb supported to
+ * DCB_CAP_DCBX_VER_CEE & if DCB_CAP_DCBX_VER_IEEE is set, clear it
+ */
+static inline void cxgb4_dcb_update_support(struct port_dcb_info *dcb)
+{
+	if (dcb->dcb_version == FW_PORT_DCB_VER_IEEE) {
+		if (dcb->supported & DCB_CAP_DCBX_VER_CEE)
+			dcb->supported &= ~DCB_CAP_DCBX_VER_CEE;
+		dcb->supported |= DCB_CAP_DCBX_VER_IEEE;
+	} else if (dcb->dcb_version == FW_PORT_DCB_VER_CEE1D01) {
+		if (dcb->supported & DCB_CAP_DCBX_VER_IEEE)
+			dcb->supported &= ~DCB_CAP_DCBX_VER_IEEE;
+		dcb->supported |= DCB_CAP_DCBX_VER_CEE;
+	}
+}
+
+/* Finite State machine for Data Center Bridging.
+ */
+void cxgb4_dcb_state_fsm(struct net_device *dev,
+			 enum cxgb4_dcb_state_input transition_to)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+	struct port_dcb_info *dcb = &pi->dcb;
+	struct adapter *adap = pi->adapter;
+	enum cxgb4_dcb_state current_state = dcb->state;
+
+	netdev_dbg(dev, "%s: State change from %d to %d for %s\n",
+		    __func__, dcb->state, transition_to, dev->name);
+
+	switch (current_state) {
+	case CXGB4_DCB_STATE_START: {
+		switch (transition_to) {
+		case CXGB4_DCB_INPUT_FW_DISABLED: {
+			/* we're going to use Host DCB */
+			dcb->state = CXGB4_DCB_STATE_HOST;
+			dcb->supported = CXGB4_DCBX_HOST_SUPPORT;
+			break;
+		}
+
+		case CXGB4_DCB_INPUT_FW_ENABLED: {
+			/* we're going to use Firmware DCB */
+			dcb->state = CXGB4_DCB_STATE_FW_INCOMPLETE;
+			dcb->supported = DCB_CAP_DCBX_LLD_MANAGED;
+			if (dcb->dcb_version == FW_PORT_DCB_VER_IEEE)
+				dcb->supported |= DCB_CAP_DCBX_VER_IEEE;
+			else
+				dcb->supported |= DCB_CAP_DCBX_VER_CEE;
+			break;
+		}
+
+		case CXGB4_DCB_INPUT_FW_INCOMPLETE: {
+			/* expected transition */
+			break;
+		}
+
+		case CXGB4_DCB_INPUT_FW_ALLSYNCED: {
+			dcb->state = CXGB4_DCB_STATE_FW_ALLSYNCED;
+			break;
+		}
+
+		default:
+			goto bad_state_input;
+		}
+		break;
+	}
+
+	case CXGB4_DCB_STATE_FW_INCOMPLETE: {
+		if (transition_to != CXGB4_DCB_INPUT_FW_DISABLED) {
+			/* during this CXGB4_DCB_STATE_FW_INCOMPLETE state,
+			 * check if the dcb version is changed (there can be
+			 * mismatch in default config & the negotiated switch
+			 * configuration at FW, so update the dcb support
+			 * accordingly.
+			 */
+			cxgb4_dcb_update_support(dcb);
+		}
+		switch (transition_to) {
+		case CXGB4_DCB_INPUT_FW_ENABLED: {
+			/* we're alreaady in firmware DCB mode */
+			break;
+		}
+
+		case CXGB4_DCB_INPUT_FW_INCOMPLETE: {
+			/* we're already incomplete */
+			break;
+		}
+
+		case CXGB4_DCB_INPUT_FW_ALLSYNCED: {
+			dcb->state = CXGB4_DCB_STATE_FW_ALLSYNCED;
+			dcb->enabled = 1;
+			linkwatch_fire_event(dev);
+			break;
+		}
+
+		default:
+			goto bad_state_input;
+		}
+		break;
+	}
+
+	case CXGB4_DCB_STATE_FW_ALLSYNCED: {
+		switch (transition_to) {
+		case CXGB4_DCB_INPUT_FW_ENABLED: {
+			/* we're alreaady in firmware DCB mode */
+			break;
+		}
+
+		case CXGB4_DCB_INPUT_FW_INCOMPLETE: {
+			/* We were successfully running with firmware DCB but
+			 * now it's telling us that it's in an "incomplete
+			 * state.  We need to reset back to a ground state
+			 * of incomplete.
+			 */
+			cxgb4_dcb_reset(dev);
+			dcb->state = CXGB4_DCB_STATE_FW_INCOMPLETE;
+			dcb->supported = CXGB4_DCBX_FW_SUPPORT;
+			linkwatch_fire_event(dev);
+			break;
+		}
+
+		case CXGB4_DCB_INPUT_FW_ALLSYNCED: {
+			/* we're already all sync'ed
+			 * this is only applicable for IEEE or
+			 * when another VI already completed negotiaton
+			 */
+			dcb->enabled = 1;
+			linkwatch_fire_event(dev);
+			break;
+		}
+
+		default:
+			goto bad_state_input;
+		}
+		break;
+	}
+
+	case CXGB4_DCB_STATE_HOST: {
+		switch (transition_to) {
+		case CXGB4_DCB_INPUT_FW_DISABLED: {
+			/* we're alreaady in Host DCB mode */
+			break;
+		}
+
+		default:
+			goto bad_state_input;
+		}
+		break;
+	}
+
+	default:
+		goto bad_state_transition;
+	}
+	return;
+
+bad_state_input:
+	dev_err(adap->pdev_dev, "cxgb4_dcb_state_fsm: illegal input symbol %d\n",
+		transition_to);
+	return;
+
+bad_state_transition:
+	dev_err(adap->pdev_dev, "cxgb4_dcb_state_fsm: bad state transition, state = %d, input = %d\n",
+		current_state, transition_to);
+}
+
+/* Handle a DCB/DCBX update message from the firmware.
+ */
+void cxgb4_dcb_handle_fw_update(struct adapter *adap,
+				const struct fw_port_cmd *pcmd)
+{
+	const union fw_port_dcb *fwdcb = &pcmd->u.dcb;
+	int port = FW_PORT_CMD_PORTID_G(be32_to_cpu(pcmd->op_to_portid));
+	struct net_device *dev = adap->port[adap->chan_map[port]];
+	struct port_info *pi = netdev_priv(dev);
+	struct port_dcb_info *dcb = &pi->dcb;
+	int dcb_type = pcmd->u.dcb.pgid.type;
+	int dcb_running_version;
+
+	/* Handle Firmware DCB Control messages separately since they drive
+	 * our state machine.
+	 */
+	if (dcb_type == FW_PORT_DCB_TYPE_CONTROL) {
+		enum cxgb4_dcb_state_input input =
+			((pcmd->u.dcb.control.all_syncd_pkd &
+			  FW_PORT_CMD_ALL_SYNCD_F)
+			 ? CXGB4_DCB_INPUT_FW_ALLSYNCED
+			 : CXGB4_DCB_INPUT_FW_INCOMPLETE);
+
+		if (dcb->dcb_version != FW_PORT_DCB_VER_UNKNOWN) {
+			dcb_running_version = FW_PORT_CMD_DCB_VERSION_G(
+				be16_to_cpu(
+				pcmd->u.dcb.control.dcb_version_to_app_state));
+			if (dcb_running_version == FW_PORT_DCB_VER_CEE1D01 ||
+			    dcb_running_version == FW_PORT_DCB_VER_IEEE) {
+				dcb->dcb_version = dcb_running_version;
+				dev_warn(adap->pdev_dev, "Interface %s is running %s\n",
+					 dev->name,
+					 dcb_ver_array[dcb->dcb_version]);
+			} else {
+				dev_warn(adap->pdev_dev,
+					 "Something screwed up, requested firmware for %s, but firmware returned %s instead\n",
+					 dcb_ver_array[dcb->dcb_version],
+					 dcb_ver_array[dcb_running_version]);
+				dcb->dcb_version = FW_PORT_DCB_VER_UNKNOWN;
+			}
+		}
+
+		cxgb4_dcb_state_fsm(dev, input);
+		return;
+	}
+
+	/* It's weird, and almost certainly an error, to get Firmware DCB
+	 * messages when we either haven't been told whether we're going to be
+	 * doing Host or Firmware DCB; and even worse when we've been told
+	 * that we're doing Host DCB!
+	 */
+	if (dcb->state == CXGB4_DCB_STATE_START ||
+	    dcb->state == CXGB4_DCB_STATE_HOST) {
+		dev_err(adap->pdev_dev, "Receiving Firmware DCB messages in State %d\n",
+			dcb->state);
+		return;
+	}
+
+	/* Now handle the general Firmware DCB update messages ...
+	 */
+	switch (dcb_type) {
+	case FW_PORT_DCB_TYPE_PGID:
+		dcb->pgid = be32_to_cpu(fwdcb->pgid.pgid);
+		dcb->msgs |= CXGB4_DCB_FW_PGID;
+		break;
+
+	case FW_PORT_DCB_TYPE_PGRATE:
+		dcb->pg_num_tcs_supported = fwdcb->pgrate.num_tcs_supported;
+		memcpy(dcb->pgrate, &fwdcb->pgrate.pgrate,
+		       sizeof(dcb->pgrate));
+		memcpy(dcb->tsa, &fwdcb->pgrate.tsa,
+		       sizeof(dcb->tsa));
+		dcb->msgs |= CXGB4_DCB_FW_PGRATE;
+		if (dcb->msgs & CXGB4_DCB_FW_PGID)
+			IEEE_FAUX_SYNC(dev, dcb);
+		break;
+
+	case FW_PORT_DCB_TYPE_PRIORATE:
+		memcpy(dcb->priorate, &fwdcb->priorate.strict_priorate,
+		       sizeof(dcb->priorate));
+		dcb->msgs |= CXGB4_DCB_FW_PRIORATE;
+		break;
+
+	case FW_PORT_DCB_TYPE_PFC:
+		dcb->pfcen = fwdcb->pfc.pfcen;
+		dcb->pfc_num_tcs_supported = fwdcb->pfc.max_pfc_tcs;
+		dcb->msgs |= CXGB4_DCB_FW_PFC;
+		IEEE_FAUX_SYNC(dev, dcb);
+		break;
+
+	case FW_PORT_DCB_TYPE_APP_ID: {
+		const struct fw_port_app_priority *fwap = &fwdcb->app_priority;
+		int idx = fwap->idx;
+		struct app_priority *ap = &dcb->app_priority[idx];
+
+		struct dcb_app app = {
+			.protocol = be16_to_cpu(fwap->protocolid),
+		};
+		int err;
+
+		/* Convert from firmware format to relevant format
+		 * when using app selector
+		 */
+		if (dcb->dcb_version == FW_PORT_DCB_VER_IEEE) {
+			app.selector = (fwap->sel_field + 1);
+			app.priority = ffs(fwap->user_prio_map) - 1;
+			err = dcb_ieee_setapp(dev, &app);
+			IEEE_FAUX_SYNC(dev, dcb);
+		} else {
+			/* Default is CEE */
+			app.selector = !!(fwap->sel_field);
+			app.priority = fwap->user_prio_map;
+			err = dcb_setapp(dev, &app);
+		}
+
+		if (err)
+			dev_err(adap->pdev_dev,
+				"Failed DCB Set Application Priority: sel=%d, prot=%d, prio=%d, err=%d\n",
+				app.selector, app.protocol, app.priority, -err);
+
+		ap->user_prio_map = fwap->user_prio_map;
+		ap->sel_field = fwap->sel_field;
+		ap->protocolid = be16_to_cpu(fwap->protocolid);
+		dcb->msgs |= CXGB4_DCB_FW_APP_ID;
+		break;
+	}
+
+	default:
+		dev_err(adap->pdev_dev, "Unknown DCB update type received %x\n",
+			dcb_type);
+		break;
+	}
+}
+
+/* Data Center Bridging netlink operations.
+ */
+
+
+/* Get current DCB enabled/disabled state.
+ */
+static u8 cxgb4_getstate(struct net_device *dev)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+
+	return pi->dcb.enabled;
+}
+
+/* Set DCB enabled/disabled.
+ */
+static u8 cxgb4_setstate(struct net_device *dev, u8 enabled)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+
+	/* If DCBx is host-managed, dcb is enabled by outside lldp agents */
+	if (pi->dcb.state == CXGB4_DCB_STATE_HOST) {
+		pi->dcb.enabled = enabled;
+		return 0;
+	}
+
+	/* Firmware doesn't provide any mechanism to control the DCB state.
+	 */
+	if (enabled != (pi->dcb.state == CXGB4_DCB_STATE_FW_ALLSYNCED))
+		return 1;
+
+	return 0;
+}
+
+static void cxgb4_getpgtccfg(struct net_device *dev, int tc,
+			     u8 *prio_type, u8 *pgid, u8 *bw_per,
+			     u8 *up_tc_map, int local)
+{
+	struct fw_port_cmd pcmd;
+	struct port_info *pi = netdev2pinfo(dev);
+	struct adapter *adap = pi->adapter;
+	int err;
+
+	*prio_type = *pgid = *bw_per = *up_tc_map = 0;
+
+	if (local)
+		INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id);
+	else
+		INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id);
+
+	pcmd.u.dcb.pgid.type = FW_PORT_DCB_TYPE_PGID;
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB read PGID failed with %d\n", -err);
+		return;
+	}
+	*pgid = (be32_to_cpu(pcmd.u.dcb.pgid.pgid) >> (tc * 4)) & 0xf;
+
+	if (local)
+		INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id);
+	else
+		INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id);
+	pcmd.u.dcb.pgrate.type = FW_PORT_DCB_TYPE_PGRATE;
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB read PGRATE failed with %d\n",
+			-err);
+		return;
+	}
+
+	*bw_per = pcmd.u.dcb.pgrate.pgrate[*pgid];
+	*up_tc_map = (1 << tc);
+
+	/* prio_type is link strict */
+	if (*pgid != 0xF)
+		*prio_type = 0x2;
+}
+
+static void cxgb4_getpgtccfg_tx(struct net_device *dev, int tc,
+				u8 *prio_type, u8 *pgid, u8 *bw_per,
+				u8 *up_tc_map)
+{
+	/* tc 0 is written at MSB position */
+	return cxgb4_getpgtccfg(dev, (7 - tc), prio_type, pgid, bw_per,
+				up_tc_map, 1);
+}
+
+
+static void cxgb4_getpgtccfg_rx(struct net_device *dev, int tc,
+				u8 *prio_type, u8 *pgid, u8 *bw_per,
+				u8 *up_tc_map)
+{
+	/* tc 0 is written at MSB position */
+	return cxgb4_getpgtccfg(dev, (7 - tc), prio_type, pgid, bw_per,
+				up_tc_map, 0);
+}
+
+static void cxgb4_setpgtccfg_tx(struct net_device *dev, int tc,
+				u8 prio_type, u8 pgid, u8 bw_per,
+				u8 up_tc_map)
+{
+	struct fw_port_cmd pcmd;
+	struct port_info *pi = netdev2pinfo(dev);
+	struct adapter *adap = pi->adapter;
+	int fw_tc = 7 - tc;
+	u32 _pgid;
+	int err;
+
+	if (pgid == DCB_ATTR_VALUE_UNDEFINED)
+		return;
+	if (bw_per == DCB_ATTR_VALUE_UNDEFINED)
+		return;
+
+	INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id);
+	pcmd.u.dcb.pgid.type = FW_PORT_DCB_TYPE_PGID;
+
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB read PGID failed with %d\n", -err);
+		return;
+	}
+
+	_pgid = be32_to_cpu(pcmd.u.dcb.pgid.pgid);
+	_pgid &= ~(0xF << (fw_tc * 4));
+	_pgid |= pgid << (fw_tc * 4);
+	pcmd.u.dcb.pgid.pgid = cpu_to_be32(_pgid);
+
+	INIT_PORT_DCB_WRITE_CMD(pcmd, pi->port_id);
+
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB write PGID failed with %d\n",
+			-err);
+		return;
+	}
+
+	memset(&pcmd, 0, sizeof(struct fw_port_cmd));
+
+	INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id);
+	pcmd.u.dcb.pgrate.type = FW_PORT_DCB_TYPE_PGRATE;
+
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB read PGRATE failed with %d\n",
+			-err);
+		return;
+	}
+
+	pcmd.u.dcb.pgrate.pgrate[pgid] = bw_per;
+
+	INIT_PORT_DCB_WRITE_CMD(pcmd, pi->port_id);
+	if (pi->dcb.state == CXGB4_DCB_STATE_HOST)
+		pcmd.op_to_portid |= cpu_to_be32(FW_PORT_CMD_APPLY_F);
+
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS)
+		dev_err(adap->pdev_dev, "DCB write PGRATE failed with %d\n",
+			-err);
+}
+
+static void cxgb4_getpgbwgcfg(struct net_device *dev, int pgid, u8 *bw_per,
+			      int local)
+{
+	struct fw_port_cmd pcmd;
+	struct port_info *pi = netdev2pinfo(dev);
+	struct adapter *adap = pi->adapter;
+	int err;
+
+	if (local)
+		INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id);
+	else
+		INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id);
+
+	pcmd.u.dcb.pgrate.type = FW_PORT_DCB_TYPE_PGRATE;
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB read PGRATE failed with %d\n",
+			-err);
+		return;
+	}
+
+	*bw_per = pcmd.u.dcb.pgrate.pgrate[pgid];
+}
+
+static void cxgb4_getpgbwgcfg_tx(struct net_device *dev, int pgid, u8 *bw_per)
+{
+	return cxgb4_getpgbwgcfg(dev, pgid, bw_per, 1);
+}
+
+static void cxgb4_getpgbwgcfg_rx(struct net_device *dev, int pgid, u8 *bw_per)
+{
+	return cxgb4_getpgbwgcfg(dev, pgid, bw_per, 0);
+}
+
+static void cxgb4_setpgbwgcfg_tx(struct net_device *dev, int pgid,
+				 u8 bw_per)
+{
+	struct fw_port_cmd pcmd;
+	struct port_info *pi = netdev2pinfo(dev);
+	struct adapter *adap = pi->adapter;
+	int err;
+
+	INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id);
+	pcmd.u.dcb.pgrate.type = FW_PORT_DCB_TYPE_PGRATE;
+
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB read PGRATE failed with %d\n",
+			-err);
+		return;
+	}
+
+	pcmd.u.dcb.pgrate.pgrate[pgid] = bw_per;
+
+	INIT_PORT_DCB_WRITE_CMD(pcmd, pi->port_id);
+	if (pi->dcb.state == CXGB4_DCB_STATE_HOST)
+		pcmd.op_to_portid |= cpu_to_be32(FW_PORT_CMD_APPLY_F);
+
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+
+	if (err != FW_PORT_DCB_CFG_SUCCESS)
+		dev_err(adap->pdev_dev, "DCB write PGRATE failed with %d\n",
+			-err);
+}
+
+/* Return whether the specified Traffic Class Priority has Priority Pause
+ * Frames enabled.
+ */
+static void cxgb4_getpfccfg(struct net_device *dev, int priority, u8 *pfccfg)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+	struct port_dcb_info *dcb = &pi->dcb;
+
+	if (!cxgb4_dcb_state_synced(dcb->state) ||
+	    priority >= CXGB4_MAX_PRIORITY)
+		*pfccfg = 0;
+	else
+		*pfccfg = (pi->dcb.pfcen >> (7 - priority)) & 1;
+}
+
+/* Enable/disable Priority Pause Frames for the specified Traffic Class
+ * Priority.
+ */
+static void cxgb4_setpfccfg(struct net_device *dev, int priority, u8 pfccfg)
+{
+	struct fw_port_cmd pcmd;
+	struct port_info *pi = netdev2pinfo(dev);
+	struct adapter *adap = pi->adapter;
+	int err;
+
+	if (!cxgb4_dcb_state_synced(pi->dcb.state) ||
+	    priority >= CXGB4_MAX_PRIORITY)
+		return;
+
+	INIT_PORT_DCB_WRITE_CMD(pcmd, pi->port_id);
+	if (pi->dcb.state == CXGB4_DCB_STATE_HOST)
+		pcmd.op_to_portid |= cpu_to_be32(FW_PORT_CMD_APPLY_F);
+
+	pcmd.u.dcb.pfc.type = FW_PORT_DCB_TYPE_PFC;
+	pcmd.u.dcb.pfc.pfcen = pi->dcb.pfcen;
+
+	if (pfccfg)
+		pcmd.u.dcb.pfc.pfcen |= (1 << (7 - priority));
+	else
+		pcmd.u.dcb.pfc.pfcen &= (~(1 << (7 - priority)));
+
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB PFC write failed with %d\n", -err);
+		return;
+	}
+
+	pi->dcb.pfcen = pcmd.u.dcb.pfc.pfcen;
+}
+
+static u8 cxgb4_setall(struct net_device *dev)
+{
+	return 0;
+}
+
+/* Return DCB capabilities.
+ */
+static u8 cxgb4_getcap(struct net_device *dev, int cap_id, u8 *caps)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+
+	switch (cap_id) {
+	case DCB_CAP_ATTR_PG:
+	case DCB_CAP_ATTR_PFC:
+		*caps = true;
+		break;
+
+	case DCB_CAP_ATTR_PG_TCS:
+		/* 8 priorities for PG represented by bitmap */
+		*caps = 0x80;
+		break;
+
+	case DCB_CAP_ATTR_PFC_TCS:
+		/* 8 priorities for PFC represented by bitmap */
+		*caps = 0x80;
+		break;
+
+	case DCB_CAP_ATTR_GSP:
+		*caps = true;
+		break;
+
+	case DCB_CAP_ATTR_UP2TC:
+	case DCB_CAP_ATTR_BCN:
+		*caps = false;
+		break;
+
+	case DCB_CAP_ATTR_DCBX:
+		*caps = pi->dcb.supported;
+		break;
+
+	default:
+		*caps = false;
+	}
+
+	return 0;
+}
+
+/* Return the number of Traffic Classes for the indicated Traffic Class ID.
+ */
+static int cxgb4_getnumtcs(struct net_device *dev, int tcs_id, u8 *num)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+
+	switch (tcs_id) {
+	case DCB_NUMTCS_ATTR_PG:
+		if (pi->dcb.msgs & CXGB4_DCB_FW_PGRATE)
+			*num = pi->dcb.pg_num_tcs_supported;
+		else
+			*num = 0x8;
+		break;
+
+	case DCB_NUMTCS_ATTR_PFC:
+		*num = 0x8;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* Set the number of Traffic Classes supported for the indicated Traffic Class
+ * ID.
+ */
+static int cxgb4_setnumtcs(struct net_device *dev, int tcs_id, u8 num)
+{
+	/* Setting the number of Traffic Classes isn't supported.
+	 */
+	return -ENOSYS;
+}
+
+/* Return whether Priority Flow Control is enabled.  */
+static u8 cxgb4_getpfcstate(struct net_device *dev)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+
+	if (!cxgb4_dcb_state_synced(pi->dcb.state))
+		return false;
+
+	return pi->dcb.pfcen != 0;
+}
+
+/* Enable/disable Priority Flow Control. */
+static void cxgb4_setpfcstate(struct net_device *dev, u8 state)
+{
+	/* We can't enable/disable Priority Flow Control but we also can't
+	 * return an error ...
+	 */
+}
+
+/* Return the Application User Priority Map associated with the specified
+ * Application ID.
+ */
+static int __cxgb4_getapp(struct net_device *dev, u8 app_idtype, u16 app_id,
+			  int peer)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+	struct adapter *adap = pi->adapter;
+	int i;
+
+	if (!cxgb4_dcb_state_synced(pi->dcb.state))
+		return 0;
+
+	for (i = 0; i < CXGB4_MAX_DCBX_APP_SUPPORTED; i++) {
+		struct fw_port_cmd pcmd;
+		int err;
+
+		if (peer)
+			INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id);
+		else
+			INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id);
+
+		pcmd.u.dcb.app_priority.type = FW_PORT_DCB_TYPE_APP_ID;
+		pcmd.u.dcb.app_priority.idx = i;
+
+		err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+		if (err != FW_PORT_DCB_CFG_SUCCESS) {
+			dev_err(adap->pdev_dev, "DCB APP read failed with %d\n",
+				-err);
+			return err;
+		}
+		if (be16_to_cpu(pcmd.u.dcb.app_priority.protocolid) == app_id)
+			if (pcmd.u.dcb.app_priority.sel_field == app_idtype)
+				return pcmd.u.dcb.app_priority.user_prio_map;
+
+		/* exhausted app list */
+		if (!pcmd.u.dcb.app_priority.protocolid)
+			break;
+	}
+
+	return -EEXIST;
+}
+
+/* Return the Application User Priority Map associated with the specified
+ * Application ID.
+ */
+static int cxgb4_getapp(struct net_device *dev, u8 app_idtype, u16 app_id)
+{
+	/* Convert app_idtype to firmware format before querying */
+	return __cxgb4_getapp(dev, app_idtype == DCB_APP_IDTYPE_ETHTYPE ?
+			      app_idtype : 3, app_id, 0);
+}
+
+/* Write a new Application User Priority Map for the specified Application ID
+ */
+static int __cxgb4_setapp(struct net_device *dev, u8 app_idtype, u16 app_id,
+			  u8 app_prio)
+{
+	struct fw_port_cmd pcmd;
+	struct port_info *pi = netdev2pinfo(dev);
+	struct adapter *adap = pi->adapter;
+	int i, err;
+
+
+	if (!cxgb4_dcb_state_synced(pi->dcb.state))
+		return -EINVAL;
+
+	/* DCB info gets thrown away on link up */
+	if (!netif_carrier_ok(dev))
+		return -ENOLINK;
+
+	for (i = 0; i < CXGB4_MAX_DCBX_APP_SUPPORTED; i++) {
+		INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id);
+		pcmd.u.dcb.app_priority.type = FW_PORT_DCB_TYPE_APP_ID;
+		pcmd.u.dcb.app_priority.idx = i;
+		err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+
+		if (err != FW_PORT_DCB_CFG_SUCCESS) {
+			dev_err(adap->pdev_dev, "DCB app table read failed with %d\n",
+				-err);
+			return err;
+		}
+		if (be16_to_cpu(pcmd.u.dcb.app_priority.protocolid) == app_id) {
+			/* overwrite existing app table */
+			pcmd.u.dcb.app_priority.protocolid = 0;
+			break;
+		}
+		/* find first empty slot */
+		if (!pcmd.u.dcb.app_priority.protocolid)
+			break;
+	}
+
+	if (i == CXGB4_MAX_DCBX_APP_SUPPORTED) {
+		/* no empty slots available */
+		dev_err(adap->pdev_dev, "DCB app table full\n");
+		return -EBUSY;
+	}
+
+	/* write out new app table entry */
+	INIT_PORT_DCB_WRITE_CMD(pcmd, pi->port_id);
+	if (pi->dcb.state == CXGB4_DCB_STATE_HOST)
+		pcmd.op_to_portid |= cpu_to_be32(FW_PORT_CMD_APPLY_F);
+
+	pcmd.u.dcb.app_priority.type = FW_PORT_DCB_TYPE_APP_ID;
+	pcmd.u.dcb.app_priority.protocolid = cpu_to_be16(app_id);
+	pcmd.u.dcb.app_priority.sel_field = app_idtype;
+	pcmd.u.dcb.app_priority.user_prio_map = app_prio;
+	pcmd.u.dcb.app_priority.idx = i;
+
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB app table write failed with %d\n",
+			-err);
+		return err;
+	}
+
+	return 0;
+}
+
+/* Priority for CEE inside dcb_app is bitmask, with 0 being an invalid value */
+static int cxgb4_setapp(struct net_device *dev, u8 app_idtype, u16 app_id,
+			u8 app_prio)
+{
+	int ret;
+	struct dcb_app app = {
+		.selector = app_idtype,
+		.protocol = app_id,
+		.priority = app_prio,
+	};
+
+	if (app_idtype != DCB_APP_IDTYPE_ETHTYPE &&
+	    app_idtype != DCB_APP_IDTYPE_PORTNUM)
+		return -EINVAL;
+
+	/* Convert app_idtype to a format that firmware understands */
+	ret = __cxgb4_setapp(dev, app_idtype == DCB_APP_IDTYPE_ETHTYPE ?
+			      app_idtype : 3, app_id, app_prio);
+	if (ret)
+		return ret;
+
+	return dcb_setapp(dev, &app);
+}
+
+/* Return whether IEEE Data Center Bridging has been negotiated.
+ */
+static inline int
+cxgb4_ieee_negotiation_complete(struct net_device *dev,
+				enum cxgb4_dcb_fw_msgs dcb_subtype)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+	struct port_dcb_info *dcb = &pi->dcb;
+
+	if (dcb->state == CXGB4_DCB_STATE_FW_ALLSYNCED)
+		if (dcb_subtype && !(dcb->msgs & dcb_subtype))
+			return 0;
+
+	return (cxgb4_dcb_state_synced(dcb->state) &&
+		(dcb->supported & DCB_CAP_DCBX_VER_IEEE));
+}
+
+static int cxgb4_ieee_read_ets(struct net_device *dev, struct ieee_ets *ets,
+			       int local)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+	struct port_dcb_info *dcb = &pi->dcb;
+	struct adapter *adap = pi->adapter;
+	uint32_t tc_info;
+	struct fw_port_cmd pcmd;
+	int i, bwg, err;
+
+	if (!(dcb->msgs & (CXGB4_DCB_FW_PGID | CXGB4_DCB_FW_PGRATE)))
+		return 0;
+
+	ets->ets_cap =  dcb->pg_num_tcs_supported;
+
+	if (local) {
+		ets->willing = 1;
+		INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id);
+	} else {
+		INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id);
+	}
+
+	pcmd.u.dcb.pgid.type = FW_PORT_DCB_TYPE_PGID;
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB read PGID failed with %d\n", -err);
+		return err;
+	}
+
+	tc_info = be32_to_cpu(pcmd.u.dcb.pgid.pgid);
+
+	if (local)
+		INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id);
+	else
+		INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id);
+
+	pcmd.u.dcb.pgrate.type = FW_PORT_DCB_TYPE_PGRATE;
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB read PGRATE failed with %d\n",
+			-err);
+		return err;
+	}
+
+	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
+		bwg = (tc_info >> ((7 - i) * 4)) & 0xF;
+		ets->prio_tc[i] = bwg;
+		ets->tc_tx_bw[i] = pcmd.u.dcb.pgrate.pgrate[i];
+		ets->tc_rx_bw[i] = ets->tc_tx_bw[i];
+		ets->tc_tsa[i] = pcmd.u.dcb.pgrate.tsa[i];
+	}
+
+	return 0;
+}
+
+static int cxgb4_ieee_get_ets(struct net_device *dev, struct ieee_ets *ets)
+{
+	return cxgb4_ieee_read_ets(dev, ets, 1);
+}
+
+/* We reuse this for peer PFC as well, as we can't have it enabled one way */
+static int cxgb4_ieee_get_pfc(struct net_device *dev, struct ieee_pfc *pfc)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+	struct port_dcb_info *dcb = &pi->dcb;
+
+	memset(pfc, 0, sizeof(struct ieee_pfc));
+
+	if (!(dcb->msgs & CXGB4_DCB_FW_PFC))
+		return 0;
+
+	pfc->pfc_cap = dcb->pfc_num_tcs_supported;
+	pfc->pfc_en = bitswap_1(dcb->pfcen);
+
+	return 0;
+}
+
+static int cxgb4_ieee_peer_ets(struct net_device *dev, struct ieee_ets *ets)
+{
+	return cxgb4_ieee_read_ets(dev, ets, 0);
+}
+
+/* Fill in the Application User Priority Map associated with the
+ * specified Application.
+ * Priority for IEEE dcb_app is an integer, with 0 being a valid value
+ */
+static int cxgb4_ieee_getapp(struct net_device *dev, struct dcb_app *app)
+{
+	int prio;
+
+	if (!cxgb4_ieee_negotiation_complete(dev, CXGB4_DCB_FW_APP_ID))
+		return -EINVAL;
+	if (!(app->selector && app->protocol))
+		return -EINVAL;
+
+	/* Try querying firmware first, use firmware format */
+	prio = __cxgb4_getapp(dev, app->selector - 1, app->protocol, 0);
+
+	if (prio < 0)
+		prio = dcb_ieee_getapp_mask(dev, app);
+
+	app->priority = ffs(prio) - 1;
+	return 0;
+}
+
+/* Write a new Application User Priority Map for the specified Application ID.
+ * Priority for IEEE dcb_app is an integer, with 0 being a valid value
+ */
+static int cxgb4_ieee_setapp(struct net_device *dev, struct dcb_app *app)
+{
+	int ret;
+
+	if (!cxgb4_ieee_negotiation_complete(dev, CXGB4_DCB_FW_APP_ID))
+		return -EINVAL;
+	if (!(app->selector && app->protocol))
+		return -EINVAL;
+
+	if (!(app->selector > IEEE_8021QAZ_APP_SEL_ETHERTYPE  &&
+	      app->selector < IEEE_8021QAZ_APP_SEL_ANY))
+		return -EINVAL;
+
+	/* change selector to a format that firmware understands */
+	ret = __cxgb4_setapp(dev, app->selector - 1, app->protocol,
+			     (1 << app->priority));
+	if (ret)
+		return ret;
+
+	return dcb_ieee_setapp(dev, app);
+}
+
+/* Return our DCBX parameters.
+ */
+static u8 cxgb4_getdcbx(struct net_device *dev)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+
+	/* This is already set by cxgb4_set_dcb_caps, so just return it */
+	return pi->dcb.supported;
+}
+
+/* Set our DCBX parameters.
+ */
+static u8 cxgb4_setdcbx(struct net_device *dev, u8 dcb_request)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+
+	/* Filter out requests which exceed our capabilities.
+	 */
+	if ((dcb_request & (CXGB4_DCBX_FW_SUPPORT | CXGB4_DCBX_HOST_SUPPORT))
+	    != dcb_request)
+		return 1;
+
+	/* Can't enable DCB if we haven't successfully negotiated it.
+	 */
+	if (!cxgb4_dcb_state_synced(pi->dcb.state))
+		return 1;
+
+	/* There's currently no mechanism to allow for the firmware DCBX
+	 * negotiation to be changed from the Host Driver.  If the caller
+	 * requests exactly the same parameters that we already have then
+	 * we'll allow them to be successfully "set" ...
+	 */
+	if (dcb_request != pi->dcb.supported)
+		return 1;
+
+	pi->dcb.supported = dcb_request;
+	return 0;
+}
+
+static int cxgb4_getpeer_app(struct net_device *dev,
+			     struct dcb_peer_app_info *info, u16 *app_count)
+{
+	struct fw_port_cmd pcmd;
+	struct port_info *pi = netdev2pinfo(dev);
+	struct adapter *adap = pi->adapter;
+	int i, err = 0;
+
+	if (!cxgb4_dcb_state_synced(pi->dcb.state))
+		return 1;
+
+	info->willing = 0;
+	info->error = 0;
+
+	*app_count = 0;
+	for (i = 0; i < CXGB4_MAX_DCBX_APP_SUPPORTED; i++) {
+		INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id);
+		pcmd.u.dcb.app_priority.type = FW_PORT_DCB_TYPE_APP_ID;
+		pcmd.u.dcb.app_priority.idx = *app_count;
+		err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+
+		if (err != FW_PORT_DCB_CFG_SUCCESS) {
+			dev_err(adap->pdev_dev, "DCB app table read failed with %d\n",
+				-err);
+			return err;
+		}
+
+		/* find first empty slot */
+		if (!pcmd.u.dcb.app_priority.protocolid)
+			break;
+	}
+	*app_count = i;
+	return err;
+}
+
+static int cxgb4_getpeerapp_tbl(struct net_device *dev, struct dcb_app *table)
+{
+	struct fw_port_cmd pcmd;
+	struct port_info *pi = netdev2pinfo(dev);
+	struct adapter *adap = pi->adapter;
+	int i, err = 0;
+
+	if (!cxgb4_dcb_state_synced(pi->dcb.state))
+		return 1;
+
+	for (i = 0; i < CXGB4_MAX_DCBX_APP_SUPPORTED; i++) {
+		INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id);
+		pcmd.u.dcb.app_priority.type = FW_PORT_DCB_TYPE_APP_ID;
+		pcmd.u.dcb.app_priority.idx = i;
+		err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+
+		if (err != FW_PORT_DCB_CFG_SUCCESS) {
+			dev_err(adap->pdev_dev, "DCB app table read failed with %d\n",
+				-err);
+			return err;
+		}
+
+		/* find first empty slot */
+		if (!pcmd.u.dcb.app_priority.protocolid)
+			break;
+
+		table[i].selector = (pcmd.u.dcb.app_priority.sel_field + 1);
+		table[i].protocol =
+			be16_to_cpu(pcmd.u.dcb.app_priority.protocolid);
+		table[i].priority =
+			ffs(pcmd.u.dcb.app_priority.user_prio_map) - 1;
+	}
+	return err;
+}
+
+/* Return Priority Group information.
+ */
+static int cxgb4_cee_peer_getpg(struct net_device *dev, struct cee_pg *pg)
+{
+	struct fw_port_cmd pcmd;
+	struct port_info *pi = netdev2pinfo(dev);
+	struct adapter *adap = pi->adapter;
+	u32 pgid;
+	int i, err;
+
+	/* We're always "willing" -- the Switch Fabric always dictates the
+	 * DCBX parameters to us.
+	 */
+	pg->willing = true;
+
+	INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id);
+	pcmd.u.dcb.pgid.type = FW_PORT_DCB_TYPE_PGID;
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB read PGID failed with %d\n", -err);
+		return err;
+	}
+	pgid = be32_to_cpu(pcmd.u.dcb.pgid.pgid);
+
+	for (i = 0; i < CXGB4_MAX_PRIORITY; i++)
+		pg->prio_pg[7 - i] = (pgid >> (i * 4)) & 0xF;
+
+	INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id);
+	pcmd.u.dcb.pgrate.type = FW_PORT_DCB_TYPE_PGRATE;
+	err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd);
+	if (err != FW_PORT_DCB_CFG_SUCCESS) {
+		dev_err(adap->pdev_dev, "DCB read PGRATE failed with %d\n",
+			-err);
+		return err;
+	}
+
+	for (i = 0; i < CXGB4_MAX_PRIORITY; i++)
+		pg->pg_bw[i] = pcmd.u.dcb.pgrate.pgrate[i];
+
+	pg->tcs_supported = pcmd.u.dcb.pgrate.num_tcs_supported;
+
+	return 0;
+}
+
+/* Return Priority Flow Control information.
+ */
+static int cxgb4_cee_peer_getpfc(struct net_device *dev, struct cee_pfc *pfc)
+{
+	struct port_info *pi = netdev2pinfo(dev);
+
+	cxgb4_getnumtcs(dev, DCB_NUMTCS_ATTR_PFC, &(pfc->tcs_supported));
+
+	/* Firmware sends this to us in a formwat that is a bit flipped version
+	 * of spec, correct it before we send it to host. This is taken care of
+	 * by bit shifting in other uses of pfcen
+	 */
+	pfc->pfc_en = bitswap_1(pi->dcb.pfcen);
+
+	pfc->tcs_supported = pi->dcb.pfc_num_tcs_supported;
+
+	return 0;
+}
+
+const struct dcbnl_rtnl_ops cxgb4_dcb_ops = {
+	.ieee_getets		= cxgb4_ieee_get_ets,
+	.ieee_getpfc		= cxgb4_ieee_get_pfc,
+	.ieee_getapp		= cxgb4_ieee_getapp,
+	.ieee_setapp		= cxgb4_ieee_setapp,
+	.ieee_peer_getets	= cxgb4_ieee_peer_ets,
+	.ieee_peer_getpfc	= cxgb4_ieee_get_pfc,
+
+	/* CEE std */
+	.getstate		= cxgb4_getstate,
+	.setstate		= cxgb4_setstate,
+	.getpgtccfgtx		= cxgb4_getpgtccfg_tx,
+	.getpgbwgcfgtx		= cxgb4_getpgbwgcfg_tx,
+	.getpgtccfgrx		= cxgb4_getpgtccfg_rx,
+	.getpgbwgcfgrx		= cxgb4_getpgbwgcfg_rx,
+	.setpgtccfgtx		= cxgb4_setpgtccfg_tx,
+	.setpgbwgcfgtx		= cxgb4_setpgbwgcfg_tx,
+	.setpfccfg		= cxgb4_setpfccfg,
+	.getpfccfg		= cxgb4_getpfccfg,
+	.setall			= cxgb4_setall,
+	.getcap			= cxgb4_getcap,
+	.getnumtcs		= cxgb4_getnumtcs,
+	.setnumtcs		= cxgb4_setnumtcs,
+	.getpfcstate		= cxgb4_getpfcstate,
+	.setpfcstate		= cxgb4_setpfcstate,
+	.getapp			= cxgb4_getapp,
+	.setapp			= cxgb4_setapp,
+
+	/* DCBX configuration */
+	.getdcbx		= cxgb4_getdcbx,
+	.setdcbx		= cxgb4_setdcbx,
+
+	/* peer apps */
+	.peer_getappinfo	= cxgb4_getpeer_app,
+	.peer_getapptable	= cxgb4_getpeerapp_tbl,
+
+	/* CEE peer */
+	.cee_peer_getpg		= cxgb4_cee_peer_getpg,
+	.cee_peer_getpfc	= cxgb4_cee_peer_getpfc,
+};