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, 282 insertions, 0 deletions

diff --git a/tools/usb/usbip/libsrc/usbip_host_common.c b/tools/usb/usbip/libsrc/usbip_host_common.c
new file mode 100644
index 000000000..ca78aa368
--- /dev/null
+++ b/tools/usb/usbip/libsrc/usbip_host_common.c
@@ -0,0 +1,282 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2015-2016 Samsung Electronics
+ *               Igor Kotrasinski <i.kotrasinsk@samsung.com>
+ *               Krzysztof Opasiak <k.opasiak@samsung.com>
+ *
+ * Refactored from usbip_host_driver.c, which is:
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <errno.h>
+#include <unistd.h>
+
+#include <libudev.h>
+
+#include "usbip_common.h"
+#include "usbip_host_common.h"
+#include "list.h"
+#include "sysfs_utils.h"
+
+extern struct udev *udev_context;
+
+static int32_t read_attr_usbip_status(struct usbip_usb_device *udev)
+{
+	char status_attr_path[SYSFS_PATH_MAX];
+	int size;
+	int fd;
+	int length;
+	char status[2] = { 0 };
+	int value = 0;
+
+	size = snprintf(status_attr_path, sizeof(status_attr_path),
+			"%s/usbip_status", udev->path);
+	if (size < 0 || (unsigned int)size >= sizeof(status_attr_path)) {
+		err("usbip_status path length %i >= %lu or < 0", size,
+		    (long unsigned)sizeof(status_attr_path));
+		return -1;
+	}
+
+
+	fd = open(status_attr_path, O_RDONLY);
+	if (fd < 0) {
+		err("error opening attribute %s", status_attr_path);
+		return -1;
+	}
+
+	length = read(fd, status, 1);
+	if (length < 0) {
+		err("error reading attribute %s", status_attr_path);
+		close(fd);
+		return -1;
+	}
+
+	value = atoi(status);
+	close(fd);
+	return value;
+}
+
+static
+struct usbip_exported_device *usbip_exported_device_new(
+		struct usbip_host_driver *hdriver, const char *sdevpath)
+{
+	struct usbip_exported_device *edev = NULL;
+	struct usbip_exported_device *edev_old;
+	size_t size;
+	int i;
+
+	edev = calloc(1, sizeof(struct usbip_exported_device));
+
+	edev->sudev =
+		udev_device_new_from_syspath(udev_context, sdevpath);
+	if (!edev->sudev) {
+		err("udev_device_new_from_syspath: %s", sdevpath);
+		goto err;
+	}
+
+	if (hdriver->ops.read_device(edev->sudev, &edev->udev) < 0)
+		goto err;
+
+	edev->status = read_attr_usbip_status(&edev->udev);
+	if (edev->status < 0)
+		goto err;
+
+	/* reallocate buffer to include usb interface data */
+	size = sizeof(struct usbip_exported_device) +
+		edev->udev.bNumInterfaces * sizeof(struct usbip_usb_interface);
+
+	edev_old = edev;
+	edev = realloc(edev, size);
+	if (!edev) {
+		edev = edev_old;
+		dbg("realloc failed");
+		goto err;
+	}
+
+	for (i = 0; i < edev->udev.bNumInterfaces; i++) {
+		/* vudc does not support reading interfaces */
+		if (!hdriver->ops.read_interface)
+			break;
+		hdriver->ops.read_interface(&edev->udev, i, &edev->uinf[i]);
+	}
+
+	return edev;
+err:
+	if (edev->sudev)
+		udev_device_unref(edev->sudev);
+	if (edev)
+		free(edev);
+
+	return NULL;
+}
+
+static int refresh_exported_devices(struct usbip_host_driver *hdriver)
+{
+	struct usbip_exported_device *edev;
+	struct udev_enumerate *enumerate;
+	struct udev_list_entry *devices, *dev_list_entry;
+	struct udev_device *dev;
+	const char *path;
+
+	enumerate = udev_enumerate_new(udev_context);
+	udev_enumerate_add_match_subsystem(enumerate, hdriver->udev_subsystem);
+	udev_enumerate_scan_devices(enumerate);
+
+	devices = udev_enumerate_get_list_entry(enumerate);
+
+	udev_list_entry_foreach(dev_list_entry, devices) {
+		path = udev_list_entry_get_name(dev_list_entry);
+		dev = udev_device_new_from_syspath(udev_context,
+						   path);
+		if (dev == NULL)
+			continue;
+
+		/* Check whether device uses usbip driver. */
+		if (hdriver->ops.is_my_device(dev)) {
+			edev = usbip_exported_device_new(hdriver, path);
+			if (!edev) {
+				dbg("usbip_exported_device_new failed");
+				continue;
+			}
+
+			list_add(&edev->node, &hdriver->edev_list);
+			hdriver->ndevs++;
+		}
+	}
+
+	return 0;
+}
+
+static void usbip_exported_device_destroy(struct list_head *devs)
+{
+	struct list_head *i, *tmp;
+	struct usbip_exported_device *edev;
+
+	list_for_each_safe(i, tmp, devs) {
+		edev = list_entry(i, struct usbip_exported_device, node);
+		list_del(i);
+		free(edev);
+	}
+}
+
+int usbip_generic_driver_open(struct usbip_host_driver *hdriver)
+{
+	int rc;
+
+	udev_context = udev_new();
+	if (!udev_context) {
+		err("udev_new failed");
+		return -1;
+	}
+
+	rc = refresh_exported_devices(hdriver);
+	if (rc < 0)
+		goto err;
+	return 0;
+err:
+	udev_unref(udev_context);
+	return -1;
+}
+
+void usbip_generic_driver_close(struct usbip_host_driver *hdriver)
+{
+	if (!hdriver)
+		return;
+
+	usbip_exported_device_destroy(&hdriver->edev_list);
+
+	udev_unref(udev_context);
+}
+
+int usbip_generic_refresh_device_list(struct usbip_host_driver *hdriver)
+{
+	int rc;
+
+	usbip_exported_device_destroy(&hdriver->edev_list);
+
+	hdriver->ndevs = 0;
+	INIT_LIST_HEAD(&hdriver->edev_list);
+
+	rc = refresh_exported_devices(hdriver);
+	if (rc < 0)
+		return -1;
+
+	return 0;
+}
+
+int usbip_export_device(struct usbip_exported_device *edev, int sockfd)
+{
+	char attr_name[] = "usbip_sockfd";
+	char sockfd_attr_path[SYSFS_PATH_MAX];
+	int size;
+	char sockfd_buff[30];
+	int ret;
+
+	if (edev->status != SDEV_ST_AVAILABLE) {
+		dbg("device not available: %s", edev->udev.busid);
+		switch (edev->status) {
+		case SDEV_ST_ERROR:
+			dbg("status SDEV_ST_ERROR");
+			ret = ST_DEV_ERR;
+			break;
+		case SDEV_ST_USED:
+			dbg("status SDEV_ST_USED");
+			ret = ST_DEV_BUSY;
+			break;
+		default:
+			dbg("status unknown: 0x%x", edev->status);
+			ret = -1;
+		}
+		return ret;
+	}
+
+	/* only the first interface is true */
+	size = snprintf(sockfd_attr_path, sizeof(sockfd_attr_path), "%s/%s",
+			edev->udev.path, attr_name);
+	if (size < 0 || (unsigned int)size >= sizeof(sockfd_attr_path)) {
+		err("exported device path length %i >= %lu or < 0", size,
+		    (long unsigned)sizeof(sockfd_attr_path));
+		return -1;
+	}
+
+	size = snprintf(sockfd_buff, sizeof(sockfd_buff), "%d\n", sockfd);
+	if (size < 0 || (unsigned int)size >= sizeof(sockfd_buff)) {
+		err("socket length %i >= %lu or < 0", size,
+		    (long unsigned)sizeof(sockfd_buff));
+		return -1;
+	}
+
+	ret = write_sysfs_attribute(sockfd_attr_path, sockfd_buff,
+				    strlen(sockfd_buff));
+	if (ret < 0) {
+		err("write_sysfs_attribute failed: sockfd %s to %s",
+		    sockfd_buff, sockfd_attr_path);
+		return ret;
+	}
+
+	info("connect: %s", edev->udev.busid);
+
+	return ret;
+}
+
+struct usbip_exported_device *usbip_generic_get_device(
+		struct usbip_host_driver *hdriver, int num)
+{
+	struct list_head *i;
+	struct usbip_exported_device *edev;
+	int cnt = 0;
+
+	list_for_each(i, &hdriver->edev_list) {
+		edev = list_entry(i, struct usbip_exported_device, node);
+		if (num == cnt)
+			return edev;
+		cnt++;
+	}
+
+	return NULL;
+}