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, 239 insertions, 0 deletions

diff --git a/arch/s390/pci/pci_sysfs.c b/arch/s390/pci/pci_sysfs.c
new file mode 100644
index 000000000..cae280e5c
--- /dev/null
+++ b/arch/s390/pci/pci_sysfs.c
@@ -0,0 +1,239 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright IBM Corp. 2012
+ *
+ * Author(s):
+ *   Jan Glauber <jang@linux.vnet.ibm.com>
+ */
+
+#define KMSG_COMPONENT "zpci"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/stat.h>
+#include <linux/pci.h>
+
+#include "../../../drivers/pci/pci.h"
+
+#include <asm/sclp.h>
+
+#define zpci_attr(name, fmt, member)					\
+static ssize_t name##_show(struct device *dev,				\
+			   struct device_attribute *attr, char *buf)	\
+{									\
+	struct zpci_dev *zdev = to_zpci(to_pci_dev(dev));		\
+									\
+	return sprintf(buf, fmt, zdev->member);				\
+}									\
+static DEVICE_ATTR_RO(name)
+
+zpci_attr(function_id, "0x%08x\n", fid);
+zpci_attr(function_handle, "0x%08x\n", fh);
+zpci_attr(pchid, "0x%04x\n", pchid);
+zpci_attr(pfgid, "0x%02x\n", pfgid);
+zpci_attr(vfn, "0x%04x\n", vfn);
+zpci_attr(pft, "0x%02x\n", pft);
+zpci_attr(port, "%d\n", port);
+zpci_attr(uid, "0x%x\n", uid);
+zpci_attr(segment0, "0x%02x\n", pfip[0]);
+zpci_attr(segment1, "0x%02x\n", pfip[1]);
+zpci_attr(segment2, "0x%02x\n", pfip[2]);
+zpci_attr(segment3, "0x%02x\n", pfip[3]);
+
+static ssize_t mio_enabled_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct zpci_dev *zdev = to_zpci(to_pci_dev(dev));
+
+	return sprintf(buf, zpci_use_mio(zdev) ? "1\n" : "0\n");
+}
+static DEVICE_ATTR_RO(mio_enabled);
+
+static ssize_t recover_store(struct device *dev, struct device_attribute *attr,
+			     const char *buf, size_t count)
+{
+	struct kernfs_node *kn;
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct zpci_dev *zdev = to_zpci(pdev);
+	int ret = 0;
+
+	/* Can't use device_remove_self() here as that would lead us to lock
+	 * the pci_rescan_remove_lock while holding the device' kernfs lock.
+	 * This would create a possible deadlock with disable_slot() which is
+	 * not directly protected by the device' kernfs lock but takes it
+	 * during the device removal which happens under
+	 * pci_rescan_remove_lock.
+	 *
+	 * This is analogous to sdev_store_delete() in
+	 * drivers/scsi/scsi_sysfs.c
+	 */
+	kn = sysfs_break_active_protection(&dev->kobj, &attr->attr);
+	WARN_ON_ONCE(!kn);
+	/* device_remove_file() serializes concurrent calls ignoring all but
+	 * the first
+	 */
+	device_remove_file(dev, attr);
+
+	/* A concurrent call to recover_store() may slip between
+	 * sysfs_break_active_protection() and the sysfs file removal.
+	 * Once it unblocks from pci_lock_rescan_remove() the original pdev
+	 * will already be removed.
+	 */
+	pci_lock_rescan_remove();
+	if (pci_dev_is_added(pdev)) {
+		pci_stop_and_remove_bus_device(pdev);
+		if (zdev->dma_table) {
+			ret = zpci_dma_exit_device(zdev);
+			if (ret)
+				goto out;
+		}
+
+		if (zdev_enabled(zdev)) {
+			ret = zpci_disable_device(zdev);
+			/*
+			 * Due to a z/VM vs LPAR inconsistency in the error
+			 * state the FH may indicate an enabled device but
+			 * disable says the device is already disabled don't
+			 * treat it as an error here.
+			 */
+			if (ret == -EINVAL)
+				ret = 0;
+			if (ret)
+				goto out;
+		}
+
+		ret = zpci_enable_device(zdev);
+		if (ret)
+			goto out;
+		ret = zpci_dma_init_device(zdev);
+		if (ret) {
+			zpci_disable_device(zdev);
+			goto out;
+		}
+		pci_rescan_bus(zdev->zbus->bus);
+	}
+out:
+	pci_unlock_rescan_remove();
+	if (kn)
+		sysfs_unbreak_active_protection(kn);
+	return ret ? ret : count;
+}
+static DEVICE_ATTR_WO(recover);
+
+static ssize_t util_string_read(struct file *filp, struct kobject *kobj,
+				struct bin_attribute *attr, char *buf,
+				loff_t off, size_t count)
+{
+	struct device *dev = kobj_to_dev(kobj);
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct zpci_dev *zdev = to_zpci(pdev);
+
+	return memory_read_from_buffer(buf, count, &off, zdev->util_str,
+				       sizeof(zdev->util_str));
+}
+static BIN_ATTR_RO(util_string, CLP_UTIL_STR_LEN);
+
+static ssize_t report_error_write(struct file *filp, struct kobject *kobj,
+				  struct bin_attribute *attr, char *buf,
+				  loff_t off, size_t count)
+{
+	struct zpci_report_error_header *report = (void *) buf;
+	struct device *dev = kobj_to_dev(kobj);
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct zpci_dev *zdev = to_zpci(pdev);
+	int ret;
+
+	if (off || (count < sizeof(*report)))
+		return -EINVAL;
+
+	ret = sclp_pci_report(report, zdev->fh, zdev->fid);
+
+	return ret ? ret : count;
+}
+static BIN_ATTR(report_error, S_IWUSR, NULL, report_error_write, PAGE_SIZE);
+
+static ssize_t uid_is_unique_show(struct device *dev,
+				  struct device_attribute *attr, char *buf)
+{
+	return sysfs_emit(buf, "%d\n", zpci_unique_uid ? 1 : 0);
+}
+static DEVICE_ATTR_RO(uid_is_unique);
+
+#ifndef CONFIG_DMI
+/* analogous to smbios index */
+static ssize_t index_show(struct device *dev,
+			  struct device_attribute *attr, char *buf)
+{
+	struct zpci_dev *zdev = to_zpci(to_pci_dev(dev));
+	u32 index = ~0;
+
+	if (zpci_unique_uid)
+		index = zdev->uid;
+
+	return sysfs_emit(buf, "%u\n", index);
+}
+static DEVICE_ATTR_RO(index);
+
+static umode_t zpci_index_is_visible(struct kobject *kobj,
+				     struct attribute *attr, int n)
+{
+	return zpci_unique_uid ? attr->mode : 0;
+}
+
+static struct attribute *zpci_ident_attrs[] = {
+	&dev_attr_index.attr,
+	NULL,
+};
+
+static struct attribute_group zpci_ident_attr_group = {
+	.attrs = zpci_ident_attrs,
+	.is_visible = zpci_index_is_visible,
+};
+#endif
+
+static struct bin_attribute *zpci_bin_attrs[] = {
+	&bin_attr_util_string,
+	&bin_attr_report_error,
+	NULL,
+};
+
+static struct attribute *zpci_dev_attrs[] = {
+	&dev_attr_function_id.attr,
+	&dev_attr_function_handle.attr,
+	&dev_attr_pchid.attr,
+	&dev_attr_pfgid.attr,
+	&dev_attr_pft.attr,
+	&dev_attr_port.attr,
+	&dev_attr_vfn.attr,
+	&dev_attr_uid.attr,
+	&dev_attr_recover.attr,
+	&dev_attr_mio_enabled.attr,
+	&dev_attr_uid_is_unique.attr,
+	NULL,
+};
+
+static struct attribute_group zpci_attr_group = {
+	.attrs = zpci_dev_attrs,
+	.bin_attrs = zpci_bin_attrs,
+};
+
+static struct attribute *pfip_attrs[] = {
+	&dev_attr_segment0.attr,
+	&dev_attr_segment1.attr,
+	&dev_attr_segment2.attr,
+	&dev_attr_segment3.attr,
+	NULL,
+};
+static struct attribute_group pfip_attr_group = {
+	.name = "pfip",
+	.attrs = pfip_attrs,
+};
+
+const struct attribute_group *zpci_attr_groups[] = {
+	&zpci_attr_group,
+	&pfip_attr_group,
+#ifndef CONFIG_DMI
+	&zpci_ident_attr_group,
+#endif
+	NULL,
+};