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, 295 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c b/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c
new file mode 100644
index 000000000..fdb63a8fb
--- /dev/null
+++ b/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c
@@ -0,0 +1,295 @@
+/*
+ * Copyright (c) 2013, Cisco Systems, 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
+ * 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/init.h>
+#include <linux/errno.h>
+
+#include <rdma/ib_user_verbs.h>
+#include <rdma/ib_addr.h>
+
+#include "usnic_common_util.h"
+#include "usnic_ib.h"
+#include "usnic_ib_qp_grp.h"
+#include "usnic_vnic.h"
+#include "usnic_ib_verbs.h"
+#include "usnic_ib_sysfs.h"
+#include "usnic_log.h"
+
+static ssize_t board_id_show(struct device *device,
+			     struct device_attribute *attr, char *buf)
+{
+	struct usnic_ib_dev *us_ibdev =
+		rdma_device_to_drv_device(device, struct usnic_ib_dev, ib_dev);
+	unsigned short subsystem_device_id;
+
+	mutex_lock(&us_ibdev->usdev_lock);
+	subsystem_device_id = us_ibdev->pdev->subsystem_device;
+	mutex_unlock(&us_ibdev->usdev_lock);
+
+	return sysfs_emit(buf, "%u\n", subsystem_device_id);
+}
+static DEVICE_ATTR_RO(board_id);
+
+/*
+ * Report the configuration for this PF
+ */
+static ssize_t
+config_show(struct device *device, struct device_attribute *attr, char *buf)
+{
+	struct usnic_ib_dev *us_ibdev =
+		rdma_device_to_drv_device(device, struct usnic_ib_dev, ib_dev);
+	enum usnic_vnic_res_type res_type;
+	int len;
+
+	mutex_lock(&us_ibdev->usdev_lock);
+	if (kref_read(&us_ibdev->vf_cnt) > 0) {
+		char *busname;
+		char *sep = "";
+		/*
+		 * bus name seems to come with annoying prefix.
+		 * Remove it if it is predictable
+		 */
+		busname = us_ibdev->pdev->bus->name;
+		if (strncmp(busname, "PCI Bus ", 8) == 0)
+			busname += 8;
+
+		len = sysfs_emit(buf, "%s: %s:%d.%d, %s, %pM, %u VFs\n",
+				 dev_name(&us_ibdev->ib_dev.dev),
+				 busname,
+				 PCI_SLOT(us_ibdev->pdev->devfn),
+				 PCI_FUNC(us_ibdev->pdev->devfn),
+				 netdev_name(us_ibdev->netdev),
+				 us_ibdev->ufdev->mac,
+				 kref_read(&us_ibdev->vf_cnt));
+
+		len += sysfs_emit_at(buf, len, " Per VF:");
+		for (res_type = USNIC_VNIC_RES_TYPE_EOL;
+		     res_type < USNIC_VNIC_RES_TYPE_MAX; res_type++) {
+			if (us_ibdev->vf_res_cnt[res_type] == 0)
+				continue;
+			len += sysfs_emit_at(buf, len, "%s %d %s",
+					     sep,
+					     us_ibdev->vf_res_cnt[res_type],
+					     usnic_vnic_res_type_to_str(res_type));
+			sep = ",";
+		}
+		len += sysfs_emit_at(buf, len, "\n");
+	} else {
+		len = sysfs_emit(buf, "%s: no VFs\n",
+				 dev_name(&us_ibdev->ib_dev.dev));
+	}
+
+	mutex_unlock(&us_ibdev->usdev_lock);
+
+	return len;
+}
+static DEVICE_ATTR_RO(config);
+
+static ssize_t
+iface_show(struct device *device, struct device_attribute *attr, char *buf)
+{
+	struct usnic_ib_dev *us_ibdev =
+		rdma_device_to_drv_device(device, struct usnic_ib_dev, ib_dev);
+
+	return sysfs_emit(buf, "%s\n", netdev_name(us_ibdev->netdev));
+}
+static DEVICE_ATTR_RO(iface);
+
+static ssize_t
+max_vf_show(struct device *device, struct device_attribute *attr, char *buf)
+{
+	struct usnic_ib_dev *us_ibdev =
+		rdma_device_to_drv_device(device, struct usnic_ib_dev, ib_dev);
+
+	return sysfs_emit(buf, "%u\n", kref_read(&us_ibdev->vf_cnt));
+}
+static DEVICE_ATTR_RO(max_vf);
+
+static ssize_t
+qp_per_vf_show(struct device *device, struct device_attribute *attr, char *buf)
+{
+	struct usnic_ib_dev *us_ibdev =
+		rdma_device_to_drv_device(device, struct usnic_ib_dev, ib_dev);
+	int qp_per_vf;
+
+	qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ],
+			us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]);
+
+	return sysfs_emit(buf, "%d\n", qp_per_vf);
+}
+static DEVICE_ATTR_RO(qp_per_vf);
+
+static ssize_t
+cq_per_vf_show(struct device *device, struct device_attribute *attr, char *buf)
+{
+	struct usnic_ib_dev *us_ibdev =
+		rdma_device_to_drv_device(device, struct usnic_ib_dev, ib_dev);
+
+	return sysfs_emit(buf, "%d\n",
+			  us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ]);
+}
+static DEVICE_ATTR_RO(cq_per_vf);
+
+static struct attribute *usnic_class_attributes[] = {
+	&dev_attr_board_id.attr,
+	&dev_attr_config.attr,
+	&dev_attr_iface.attr,
+	&dev_attr_max_vf.attr,
+	&dev_attr_qp_per_vf.attr,
+	&dev_attr_cq_per_vf.attr,
+	NULL
+};
+
+const struct attribute_group usnic_attr_group = {
+	.attrs = usnic_class_attributes,
+};
+
+struct qpn_attribute {
+	struct attribute attr;
+	ssize_t (*show)(struct usnic_ib_qp_grp *, char *buf);
+};
+
+/*
+ * Definitions for supporting QPN entries in sysfs
+ */
+static ssize_t
+usnic_ib_qpn_attr_show(struct kobject *kobj, struct attribute *attr, char *buf)
+{
+	struct usnic_ib_qp_grp *qp_grp;
+	struct qpn_attribute *qpn_attr;
+
+	qp_grp = container_of(kobj, struct usnic_ib_qp_grp, kobj);
+	qpn_attr = container_of(attr, struct qpn_attribute, attr);
+
+	return qpn_attr->show(qp_grp, buf);
+}
+
+static const struct sysfs_ops usnic_ib_qpn_sysfs_ops = {
+	.show = usnic_ib_qpn_attr_show
+};
+
+#define QPN_ATTR_RO(NAME) \
+struct qpn_attribute qpn_attr_##NAME = __ATTR_RO(NAME)
+
+static ssize_t context_show(struct usnic_ib_qp_grp *qp_grp, char *buf)
+{
+	return sysfs_emit(buf, "0x%p\n", qp_grp->ctx);
+}
+
+static ssize_t summary_show(struct usnic_ib_qp_grp *qp_grp, char *buf)
+{
+	int i, j;
+	struct usnic_vnic_res_chunk *res_chunk;
+	struct usnic_vnic_res *vnic_res;
+	int len;
+
+	len = sysfs_emit(buf, "QPN: %d State: (%s) PID: %u VF Idx: %hu",
+			 qp_grp->ibqp.qp_num,
+			 usnic_ib_qp_grp_state_to_string(qp_grp->state),
+			 qp_grp->owner_pid,
+			 usnic_vnic_get_index(qp_grp->vf->vnic));
+
+	for (i = 0; qp_grp->res_chunk_list[i]; i++) {
+		res_chunk = qp_grp->res_chunk_list[i];
+		for (j = 0; j < res_chunk->cnt; j++) {
+			vnic_res = res_chunk->res[j];
+			len += sysfs_emit_at(buf, len, " %s[%d]",
+				usnic_vnic_res_type_to_str(vnic_res->type),
+				vnic_res->vnic_idx);
+		}
+	}
+
+	len += sysfs_emit_at(buf, len, "\n");
+
+	return len;
+}
+
+static QPN_ATTR_RO(context);
+static QPN_ATTR_RO(summary);
+
+static struct attribute *usnic_ib_qpn_default_attrs[] = {
+	&qpn_attr_context.attr,
+	&qpn_attr_summary.attr,
+	NULL
+};
+ATTRIBUTE_GROUPS(usnic_ib_qpn_default);
+
+static struct kobj_type usnic_ib_qpn_type = {
+	.sysfs_ops = &usnic_ib_qpn_sysfs_ops,
+	.default_groups = usnic_ib_qpn_default_groups,
+};
+
+int usnic_ib_sysfs_register_usdev(struct usnic_ib_dev *us_ibdev)
+{
+	/* create kernel object for looking at individual QPs */
+	kobject_get(&us_ibdev->ib_dev.dev.kobj);
+	us_ibdev->qpn_kobj = kobject_create_and_add("qpn",
+			&us_ibdev->ib_dev.dev.kobj);
+	if (us_ibdev->qpn_kobj == NULL) {
+		kobject_put(&us_ibdev->ib_dev.dev.kobj);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+void usnic_ib_sysfs_unregister_usdev(struct usnic_ib_dev *us_ibdev)
+{
+	kobject_put(us_ibdev->qpn_kobj);
+}
+
+void usnic_ib_sysfs_qpn_add(struct usnic_ib_qp_grp *qp_grp)
+{
+	struct usnic_ib_dev *us_ibdev;
+	int err;
+
+	us_ibdev = qp_grp->vf->pf;
+
+	err = kobject_init_and_add(&qp_grp->kobj, &usnic_ib_qpn_type,
+			kobject_get(us_ibdev->qpn_kobj),
+			"%d", qp_grp->grp_id);
+	if (err) {
+		kobject_put(us_ibdev->qpn_kobj);
+		return;
+	}
+}
+
+void usnic_ib_sysfs_qpn_remove(struct usnic_ib_qp_grp *qp_grp)
+{
+	struct usnic_ib_dev *us_ibdev;
+
+	us_ibdev = qp_grp->vf->pf;
+
+	kobject_put(&qp_grp->kobj);
+	kobject_put(us_ibdev->qpn_kobj);
+}