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, 569 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
new file mode 100644
index 000000000..246b739dd
--- /dev/null
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -0,0 +1,569 @@
+/*
+ * Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/ethtool.h>
+#include <linux/rtnetlink.h>
+#include <linux/inetdevice.h>
+#include <net/addrconf.h>
+#include <linux/io.h>
+
+#include <asm/irq.h>
+#include <asm/byteorder.h>
+
+#include <rdma/iw_cm.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_umem.h>
+#include <rdma/ib_user_verbs.h>
+
+#include "iw_cxgb4.h"
+
+static int fastreg_support = 1;
+module_param(fastreg_support, int, 0644);
+MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default=1)");
+
+static void c4iw_dealloc_ucontext(struct ib_ucontext *context)
+{
+	struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context);
+	struct c4iw_dev *rhp;
+	struct c4iw_mm_entry *mm, *tmp;
+
+	pr_debug("context %p\n", context);
+	rhp = to_c4iw_dev(ucontext->ibucontext.device);
+
+	list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
+		kfree(mm);
+	c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx);
+}
+
+static int c4iw_alloc_ucontext(struct ib_ucontext *ucontext,
+			       struct ib_udata *udata)
+{
+	struct ib_device *ibdev = ucontext->device;
+	struct c4iw_ucontext *context = to_c4iw_ucontext(ucontext);
+	struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
+	struct c4iw_alloc_ucontext_resp uresp;
+	int ret = 0;
+	struct c4iw_mm_entry *mm = NULL;
+
+	pr_debug("ibdev %p\n", ibdev);
+	c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx);
+	INIT_LIST_HEAD(&context->mmaps);
+	spin_lock_init(&context->mmap_lock);
+
+	if (udata->outlen < sizeof(uresp) - sizeof(uresp.reserved)) {
+		pr_err_once("Warning - downlevel libcxgb4 (non-fatal), device status page disabled\n");
+		rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED;
+	} else {
+		mm = kmalloc(sizeof(*mm), GFP_KERNEL);
+		if (!mm) {
+			ret = -ENOMEM;
+			goto err;
+		}
+
+		uresp.status_page_size = PAGE_SIZE;
+
+		spin_lock(&context->mmap_lock);
+		uresp.status_page_key = context->key;
+		context->key += PAGE_SIZE;
+		spin_unlock(&context->mmap_lock);
+
+		ret = ib_copy_to_udata(udata, &uresp,
+				       sizeof(uresp) - sizeof(uresp.reserved));
+		if (ret)
+			goto err_mm;
+
+		mm->key = uresp.status_page_key;
+		mm->addr = virt_to_phys(rhp->rdev.status_page);
+		mm->len = PAGE_SIZE;
+		insert_mmap(context, mm);
+	}
+	return 0;
+err_mm:
+	kfree(mm);
+err:
+	return ret;
+}
+
+static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
+{
+	int len = vma->vm_end - vma->vm_start;
+	u32 key = vma->vm_pgoff << PAGE_SHIFT;
+	struct c4iw_rdev *rdev;
+	int ret = 0;
+	struct c4iw_mm_entry *mm;
+	struct c4iw_ucontext *ucontext;
+	u64 addr;
+
+	pr_debug("pgoff 0x%lx key 0x%x len %d\n", vma->vm_pgoff,
+		 key, len);
+
+	if (vma->vm_start & (PAGE_SIZE-1))
+		return -EINVAL;
+
+	rdev = &(to_c4iw_dev(context->device)->rdev);
+	ucontext = to_c4iw_ucontext(context);
+
+	mm = remove_mmap(ucontext, key, len);
+	if (!mm)
+		return -EINVAL;
+	addr = mm->addr;
+	kfree(mm);
+
+	if ((addr >= pci_resource_start(rdev->lldi.pdev, 0)) &&
+	    (addr < (pci_resource_start(rdev->lldi.pdev, 0) +
+		    pci_resource_len(rdev->lldi.pdev, 0)))) {
+
+		/*
+		 * MA_SYNC register...
+		 */
+		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+		ret = io_remap_pfn_range(vma, vma->vm_start,
+					 addr >> PAGE_SHIFT,
+					 len, vma->vm_page_prot);
+	} else if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) &&
+		   (addr < (pci_resource_start(rdev->lldi.pdev, 2) +
+		    pci_resource_len(rdev->lldi.pdev, 2)))) {
+
+		/*
+		 * Map user DB or OCQP memory...
+		 */
+		if (addr >= rdev->oc_mw_pa)
+			vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot);
+		else {
+			if (!is_t4(rdev->lldi.adapter_type))
+				vma->vm_page_prot =
+					t4_pgprot_wc(vma->vm_page_prot);
+			else
+				vma->vm_page_prot =
+					pgprot_noncached(vma->vm_page_prot);
+		}
+		ret = io_remap_pfn_range(vma, vma->vm_start,
+					 addr >> PAGE_SHIFT,
+					 len, vma->vm_page_prot);
+	} else {
+
+		/*
+		 * Map WQ or CQ contig dma memory...
+		 */
+		ret = remap_pfn_range(vma, vma->vm_start,
+				      addr >> PAGE_SHIFT,
+				      len, vma->vm_page_prot);
+	}
+
+	return ret;
+}
+
+static int c4iw_deallocate_pd(struct ib_pd *pd, struct ib_udata *udata)
+{
+	struct c4iw_dev *rhp;
+	struct c4iw_pd *php;
+
+	php = to_c4iw_pd(pd);
+	rhp = php->rhp;
+	pr_debug("ibpd %p pdid 0x%x\n", pd, php->pdid);
+	c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid);
+	mutex_lock(&rhp->rdev.stats.lock);
+	rhp->rdev.stats.pd.cur--;
+	mutex_unlock(&rhp->rdev.stats.lock);
+	return 0;
+}
+
+static int c4iw_allocate_pd(struct ib_pd *pd, struct ib_udata *udata)
+{
+	struct c4iw_pd *php = to_c4iw_pd(pd);
+	struct ib_device *ibdev = pd->device;
+	u32 pdid;
+	struct c4iw_dev *rhp;
+
+	pr_debug("ibdev %p\n", ibdev);
+	rhp = (struct c4iw_dev *) ibdev;
+	pdid =  c4iw_get_resource(&rhp->rdev.resource.pdid_table);
+	if (!pdid)
+		return -EINVAL;
+
+	php->pdid = pdid;
+	php->rhp = rhp;
+	if (udata) {
+		struct c4iw_alloc_pd_resp uresp = {.pdid = php->pdid};
+
+		if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
+			c4iw_deallocate_pd(&php->ibpd, udata);
+			return -EFAULT;
+		}
+	}
+	mutex_lock(&rhp->rdev.stats.lock);
+	rhp->rdev.stats.pd.cur++;
+	if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max)
+		rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur;
+	mutex_unlock(&rhp->rdev.stats.lock);
+	pr_debug("pdid 0x%0x ptr 0x%p\n", pdid, php);
+	return 0;
+}
+
+static int c4iw_query_gid(struct ib_device *ibdev, u32 port, int index,
+			  union ib_gid *gid)
+{
+	struct c4iw_dev *dev;
+
+	pr_debug("ibdev %p, port %u, index %d, gid %p\n",
+		 ibdev, port, index, gid);
+	if (!port)
+		return -EINVAL;
+	dev = to_c4iw_dev(ibdev);
+	memset(&(gid->raw[0]), 0, sizeof(gid->raw));
+	memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6);
+	return 0;
+}
+
+static int c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
+			     struct ib_udata *uhw)
+{
+
+	struct c4iw_dev *dev;
+
+	pr_debug("ibdev %p\n", ibdev);
+
+	if (uhw->inlen || uhw->outlen)
+		return -EINVAL;
+
+	dev = to_c4iw_dev(ibdev);
+	addrconf_addr_eui48((u8 *)&props->sys_image_guid,
+			    dev->rdev.lldi.ports[0]->dev_addr);
+	props->hw_ver = CHELSIO_CHIP_RELEASE(dev->rdev.lldi.adapter_type);
+	props->fw_ver = dev->rdev.lldi.fw_vers;
+	props->device_cap_flags = IB_DEVICE_MEM_WINDOW;
+	props->kernel_cap_flags = IBK_LOCAL_DMA_LKEY;
+	if (fastreg_support)
+		props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
+	props->page_size_cap = T4_PAGESIZE_MASK;
+	props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
+	props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
+	props->max_mr_size = T4_MAX_MR_SIZE;
+	props->max_qp = dev->rdev.lldi.vr->qp.size / 2;
+	props->max_srq = dev->rdev.lldi.vr->srq.size;
+	props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth;
+	props->max_srq_wr = dev->rdev.hw_queue.t4_max_qp_depth;
+	props->max_send_sge = min(T4_MAX_SEND_SGE, T4_MAX_WRITE_SGE);
+	props->max_recv_sge = T4_MAX_RECV_SGE;
+	props->max_srq_sge = T4_MAX_RECV_SGE;
+	props->max_sge_rd = 1;
+	props->max_res_rd_atom = dev->rdev.lldi.max_ird_adapter;
+	props->max_qp_rd_atom = min(dev->rdev.lldi.max_ordird_qp,
+				    c4iw_max_read_depth);
+	props->max_qp_init_rd_atom = props->max_qp_rd_atom;
+	props->max_cq = dev->rdev.lldi.vr->qp.size;
+	props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth;
+	props->max_mr = c4iw_num_stags(&dev->rdev);
+	props->max_pd = T4_MAX_NUM_PD;
+	props->local_ca_ack_delay = 0;
+	props->max_fast_reg_page_list_len =
+		t4_max_fr_depth(dev->rdev.lldi.ulptx_memwrite_dsgl && use_dsgl);
+
+	return 0;
+}
+
+static int c4iw_query_port(struct ib_device *ibdev, u32 port,
+			   struct ib_port_attr *props)
+{
+	int ret = 0;
+	pr_debug("ibdev %p\n", ibdev);
+	ret = ib_get_eth_speed(ibdev, port, &props->active_speed,
+			       &props->active_width);
+
+	props->port_cap_flags =
+	    IB_PORT_CM_SUP |
+	    IB_PORT_SNMP_TUNNEL_SUP |
+	    IB_PORT_REINIT_SUP |
+	    IB_PORT_DEVICE_MGMT_SUP |
+	    IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
+	props->gid_tbl_len = 1;
+	props->max_msg_sz = -1;
+
+	return ret;
+}
+
+static ssize_t hw_rev_show(struct device *dev,
+			   struct device_attribute *attr, char *buf)
+{
+	struct c4iw_dev *c4iw_dev =
+			rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
+
+	pr_debug("dev 0x%p\n", dev);
+	return sysfs_emit(
+		buf, "%d\n",
+		CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type));
+}
+static DEVICE_ATTR_RO(hw_rev);
+
+static ssize_t hca_type_show(struct device *dev,
+			     struct device_attribute *attr, char *buf)
+{
+	struct c4iw_dev *c4iw_dev =
+			rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
+	struct ethtool_drvinfo info;
+	struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0];
+
+	pr_debug("dev 0x%p\n", dev);
+	lldev->ethtool_ops->get_drvinfo(lldev, &info);
+	return sysfs_emit(buf, "%s\n", info.driver);
+}
+static DEVICE_ATTR_RO(hca_type);
+
+static ssize_t board_id_show(struct device *dev, struct device_attribute *attr,
+			     char *buf)
+{
+	struct c4iw_dev *c4iw_dev =
+			rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
+
+	pr_debug("dev 0x%p\n", dev);
+	return sysfs_emit(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor,
+			  c4iw_dev->rdev.lldi.pdev->device);
+}
+static DEVICE_ATTR_RO(board_id);
+
+enum counters {
+	IP4INSEGS,
+	IP4OUTSEGS,
+	IP4RETRANSSEGS,
+	IP4OUTRSTS,
+	IP6INSEGS,
+	IP6OUTSEGS,
+	IP6RETRANSSEGS,
+	IP6OUTRSTS,
+	NR_COUNTERS
+};
+
+static const struct rdma_stat_desc cxgb4_descs[] = {
+	[IP4INSEGS].name = "ip4InSegs",
+	[IP4OUTSEGS].name = "ip4OutSegs",
+	[IP4RETRANSSEGS].name = "ip4RetransSegs",
+	[IP4OUTRSTS].name = "ip4OutRsts",
+	[IP6INSEGS].name = "ip6InSegs",
+	[IP6OUTSEGS].name = "ip6OutSegs",
+	[IP6RETRANSSEGS].name = "ip6RetransSegs",
+	[IP6OUTRSTS].name = "ip6OutRsts"
+};
+
+static struct rdma_hw_stats *c4iw_alloc_device_stats(struct ib_device *ibdev)
+{
+	BUILD_BUG_ON(ARRAY_SIZE(cxgb4_descs) != NR_COUNTERS);
+
+	/* FIXME: these look like port stats */
+	return rdma_alloc_hw_stats_struct(cxgb4_descs, NR_COUNTERS,
+					  RDMA_HW_STATS_DEFAULT_LIFESPAN);
+}
+
+static int c4iw_get_mib(struct ib_device *ibdev,
+			struct rdma_hw_stats *stats,
+			u32 port, int index)
+{
+	struct tp_tcp_stats v4, v6;
+	struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev);
+
+	cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6);
+	stats->value[IP4INSEGS] = v4.tcp_in_segs;
+	stats->value[IP4OUTSEGS] = v4.tcp_out_segs;
+	stats->value[IP4RETRANSSEGS] = v4.tcp_retrans_segs;
+	stats->value[IP4OUTRSTS] = v4.tcp_out_rsts;
+	stats->value[IP6INSEGS] = v6.tcp_in_segs;
+	stats->value[IP6OUTSEGS] = v6.tcp_out_segs;
+	stats->value[IP6RETRANSSEGS] = v6.tcp_retrans_segs;
+	stats->value[IP6OUTRSTS] = v6.tcp_out_rsts;
+
+	return stats->num_counters;
+}
+
+static struct attribute *c4iw_class_attributes[] = {
+	&dev_attr_hw_rev.attr,
+	&dev_attr_hca_type.attr,
+	&dev_attr_board_id.attr,
+	NULL
+};
+
+static const struct attribute_group c4iw_attr_group = {
+	.attrs = c4iw_class_attributes,
+};
+
+static int c4iw_port_immutable(struct ib_device *ibdev, u32 port_num,
+			       struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
+
+	err = ib_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+
+	return 0;
+}
+
+static void get_dev_fw_str(struct ib_device *dev, char *str)
+{
+	struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
+						 ibdev);
+	pr_debug("dev 0x%p\n", dev);
+
+	snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u.%u.%u",
+		 FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers),
+		 FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers),
+		 FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers),
+		 FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers));
+}
+
+static const struct ib_device_ops c4iw_dev_ops = {
+	.owner = THIS_MODULE,
+	.driver_id = RDMA_DRIVER_CXGB4,
+	.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION,
+
+	.alloc_hw_device_stats = c4iw_alloc_device_stats,
+	.alloc_mr = c4iw_alloc_mr,
+	.alloc_pd = c4iw_allocate_pd,
+	.alloc_ucontext = c4iw_alloc_ucontext,
+	.create_cq = c4iw_create_cq,
+	.create_qp = c4iw_create_qp,
+	.create_srq = c4iw_create_srq,
+	.dealloc_pd = c4iw_deallocate_pd,
+	.dealloc_ucontext = c4iw_dealloc_ucontext,
+	.dereg_mr = c4iw_dereg_mr,
+	.destroy_cq = c4iw_destroy_cq,
+	.destroy_qp = c4iw_destroy_qp,
+	.destroy_srq = c4iw_destroy_srq,
+	.device_group = &c4iw_attr_group,
+	.fill_res_cq_entry = c4iw_fill_res_cq_entry,
+	.fill_res_cm_id_entry = c4iw_fill_res_cm_id_entry,
+	.fill_res_mr_entry = c4iw_fill_res_mr_entry,
+	.get_dev_fw_str = get_dev_fw_str,
+	.get_dma_mr = c4iw_get_dma_mr,
+	.get_hw_stats = c4iw_get_mib,
+	.get_port_immutable = c4iw_port_immutable,
+	.iw_accept = c4iw_accept_cr,
+	.iw_add_ref = c4iw_qp_add_ref,
+	.iw_connect = c4iw_connect,
+	.iw_create_listen = c4iw_create_listen,
+	.iw_destroy_listen = c4iw_destroy_listen,
+	.iw_get_qp = c4iw_get_qp,
+	.iw_reject = c4iw_reject_cr,
+	.iw_rem_ref = c4iw_qp_rem_ref,
+	.map_mr_sg = c4iw_map_mr_sg,
+	.mmap = c4iw_mmap,
+	.modify_qp = c4iw_ib_modify_qp,
+	.modify_srq = c4iw_modify_srq,
+	.poll_cq = c4iw_poll_cq,
+	.post_recv = c4iw_post_receive,
+	.post_send = c4iw_post_send,
+	.post_srq_recv = c4iw_post_srq_recv,
+	.query_device = c4iw_query_device,
+	.query_gid = c4iw_query_gid,
+	.query_port = c4iw_query_port,
+	.query_qp = c4iw_ib_query_qp,
+	.reg_user_mr = c4iw_reg_user_mr,
+	.req_notify_cq = c4iw_arm_cq,
+
+	INIT_RDMA_OBJ_SIZE(ib_cq, c4iw_cq, ibcq),
+	INIT_RDMA_OBJ_SIZE(ib_mw, c4iw_mw, ibmw),
+	INIT_RDMA_OBJ_SIZE(ib_pd, c4iw_pd, ibpd),
+	INIT_RDMA_OBJ_SIZE(ib_qp, c4iw_qp, ibqp),
+	INIT_RDMA_OBJ_SIZE(ib_srq, c4iw_srq, ibsrq),
+	INIT_RDMA_OBJ_SIZE(ib_ucontext, c4iw_ucontext, ibucontext),
+};
+
+static int set_netdevs(struct ib_device *ib_dev, struct c4iw_rdev *rdev)
+{
+	int ret;
+	int i;
+
+	for (i = 0; i < rdev->lldi.nports; i++) {
+		ret = ib_device_set_netdev(ib_dev, rdev->lldi.ports[i],
+					   i + 1);
+		if (ret)
+			return ret;
+	}
+	return 0;
+}
+
+void c4iw_register_device(struct work_struct *work)
+{
+	int ret;
+	struct uld_ctx *ctx = container_of(work, struct uld_ctx, reg_work);
+	struct c4iw_dev *dev = ctx->dev;
+
+	pr_debug("c4iw_dev %p\n", dev);
+	addrconf_addr_eui48((u8 *)&dev->ibdev.node_guid,
+			    dev->rdev.lldi.ports[0]->dev_addr);
+	dev->ibdev.local_dma_lkey = 0;
+	dev->ibdev.node_type = RDMA_NODE_RNIC;
+	BUILD_BUG_ON(sizeof(C4IW_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
+	memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC));
+	dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports;
+	dev->ibdev.num_comp_vectors =  dev->rdev.lldi.nciq;
+	dev->ibdev.dev.parent = &dev->rdev.lldi.pdev->dev;
+
+	memcpy(dev->ibdev.iw_ifname, dev->rdev.lldi.ports[0]->name,
+	       sizeof(dev->ibdev.iw_ifname));
+
+	ib_set_device_ops(&dev->ibdev, &c4iw_dev_ops);
+	ret = set_netdevs(&dev->ibdev, &dev->rdev);
+	if (ret)
+		goto err_dealloc_ctx;
+	dma_set_max_seg_size(&dev->rdev.lldi.pdev->dev, UINT_MAX);
+	ret = ib_register_device(&dev->ibdev, "cxgb4_%d",
+				 &dev->rdev.lldi.pdev->dev);
+	if (ret)
+		goto err_dealloc_ctx;
+	return;
+
+err_dealloc_ctx:
+	pr_err("%s - Failed registering iwarp device: %d\n",
+	       pci_name(ctx->lldi.pdev), ret);
+	c4iw_dealloc(ctx);
+	return;
+}
+
+void c4iw_unregister_device(struct c4iw_dev *dev)
+{
+	pr_debug("c4iw_dev %p\n", dev);
+	ib_unregister_device(&dev->ibdev);
+	return;
+}