From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- drivers/usb/misc/idmouse.c | 407 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 407 insertions(+) create mode 100644 drivers/usb/misc/idmouse.c (limited to 'drivers/usb/misc/idmouse.c') diff --git a/drivers/usb/misc/idmouse.c b/drivers/usb/misc/idmouse.c new file mode 100644 index 000000000..ea39243ef --- /dev/null +++ b/drivers/usb/misc/idmouse.c @@ -0,0 +1,407 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Siemens ID Mouse driver v0.6 + + Copyright (C) 2004-5 by Florian 'Floe' Echtler + and Andreas 'ad' Deresch + + Derived from the USB Skeleton driver 1.1, + Copyright (C) 2003 Greg Kroah-Hartman (greg@kroah.com) + + Additional information provided by Martin Reising + + +*/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* image constants */ +#define WIDTH 225 +#define HEIGHT 289 +#define HEADER "P5 225 289 255 " +#define IMGSIZE ((WIDTH * HEIGHT) + sizeof(HEADER)-1) + +#define DRIVER_SHORT "idmouse" +#define DRIVER_AUTHOR "Florian 'Floe' Echtler " +#define DRIVER_DESC "Siemens ID Mouse FingerTIP Sensor Driver" + +/* minor number for misc USB devices */ +#define USB_IDMOUSE_MINOR_BASE 132 + +/* vendor and device IDs */ +#define ID_SIEMENS 0x0681 +#define ID_IDMOUSE 0x0005 +#define ID_CHERRY 0x0010 + +/* device ID table */ +static const struct usb_device_id idmouse_table[] = { + {USB_DEVICE(ID_SIEMENS, ID_IDMOUSE)}, /* Siemens ID Mouse (Professional) */ + {USB_DEVICE(ID_SIEMENS, ID_CHERRY )}, /* Cherry FingerTIP ID Board */ + {} /* terminating null entry */ +}; + +/* sensor commands */ +#define FTIP_RESET 0x20 +#define FTIP_ACQUIRE 0x21 +#define FTIP_RELEASE 0x22 +#define FTIP_BLINK 0x23 /* LSB of value = blink pulse width */ +#define FTIP_SCROLL 0x24 + +#define ftip_command(dev, command, value, index) \ + usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), command, \ + USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT, value, index, NULL, 0, 1000) + +MODULE_DEVICE_TABLE(usb, idmouse_table); + +/* structure to hold all of our device specific stuff */ +struct usb_idmouse { + + struct usb_device *udev; /* save off the usb device pointer */ + struct usb_interface *interface; /* the interface for this device */ + + unsigned char *bulk_in_buffer; /* the buffer to receive data */ + size_t bulk_in_size; /* the maximum bulk packet size */ + size_t orig_bi_size; /* same as above, but reported by the device */ + __u8 bulk_in_endpointAddr; /* the address of the bulk in endpoint */ + + int open; /* if the port is open or not */ + int present; /* if the device is not disconnected */ + struct mutex lock; /* locks this structure */ + +}; + +/* local function prototypes */ +static ssize_t idmouse_read(struct file *file, char __user *buffer, + size_t count, loff_t * ppos); + +static int idmouse_open(struct inode *inode, struct file *file); +static int idmouse_release(struct inode *inode, struct file *file); + +static int idmouse_probe(struct usb_interface *interface, + const struct usb_device_id *id); + +static void idmouse_disconnect(struct usb_interface *interface); +static int idmouse_suspend(struct usb_interface *intf, pm_message_t message); +static int idmouse_resume(struct usb_interface *intf); + +/* file operation pointers */ +static const struct file_operations idmouse_fops = { + .owner = THIS_MODULE, + .read = idmouse_read, + .open = idmouse_open, + .release = idmouse_release, + .llseek = default_llseek, +}; + +/* class driver information */ +static struct usb_class_driver idmouse_class = { + .name = "idmouse%d", + .fops = &idmouse_fops, + .minor_base = USB_IDMOUSE_MINOR_BASE, +}; + +/* usb specific object needed to register this driver with the usb subsystem */ +static struct usb_driver idmouse_driver = { + .name = DRIVER_SHORT, + .probe = idmouse_probe, + .disconnect = idmouse_disconnect, + .suspend = idmouse_suspend, + .resume = idmouse_resume, + .reset_resume = idmouse_resume, + .id_table = idmouse_table, + .supports_autosuspend = 1, +}; + +static int idmouse_create_image(struct usb_idmouse *dev) +{ + int bytes_read; + int bulk_read; + int result; + + memcpy(dev->bulk_in_buffer, HEADER, sizeof(HEADER)-1); + bytes_read = sizeof(HEADER)-1; + + /* reset the device and set a fast blink rate */ + result = ftip_command(dev, FTIP_RELEASE, 0, 0); + if (result < 0) + goto reset; + result = ftip_command(dev, FTIP_BLINK, 1, 0); + if (result < 0) + goto reset; + + /* initialize the sensor - sending this command twice */ + /* significantly reduces the rate of failed reads */ + result = ftip_command(dev, FTIP_ACQUIRE, 0, 0); + if (result < 0) + goto reset; + result = ftip_command(dev, FTIP_ACQUIRE, 0, 0); + if (result < 0) + goto reset; + + /* start the readout - sending this command twice */ + /* presumably enables the high dynamic range mode */ + result = ftip_command(dev, FTIP_RESET, 0, 0); + if (result < 0) + goto reset; + result = ftip_command(dev, FTIP_RESET, 0, 0); + if (result < 0) + goto reset; + + /* loop over a blocking bulk read to get data from the device */ + while (bytes_read < IMGSIZE) { + result = usb_bulk_msg(dev->udev, + usb_rcvbulkpipe(dev->udev, dev->bulk_in_endpointAddr), + dev->bulk_in_buffer + bytes_read, + dev->bulk_in_size, &bulk_read, 5000); + if (result < 0) { + /* Maybe this error was caused by the increased packet size? */ + /* Reset to the original value and tell userspace to retry. */ + if (dev->bulk_in_size != dev->orig_bi_size) { + dev->bulk_in_size = dev->orig_bi_size; + result = -EAGAIN; + } + break; + } + if (signal_pending(current)) { + result = -EINTR; + break; + } + bytes_read += bulk_read; + } + + /* check for valid image */ + /* right border should be black (0x00) */ + for (bytes_read = sizeof(HEADER)-1 + WIDTH-1; bytes_read < IMGSIZE; bytes_read += WIDTH) + if (dev->bulk_in_buffer[bytes_read] != 0x00) + return -EAGAIN; + + /* lower border should be white (0xFF) */ + for (bytes_read = IMGSIZE-WIDTH; bytes_read < IMGSIZE-1; bytes_read++) + if (dev->bulk_in_buffer[bytes_read] != 0xFF) + return -EAGAIN; + + /* reset the device */ +reset: + ftip_command(dev, FTIP_RELEASE, 0, 0); + + /* should be IMGSIZE == 65040 */ + dev_dbg(&dev->interface->dev, "read %d bytes fingerprint data\n", + bytes_read); + return result; +} + +/* PM operations are nops as this driver does IO only during open() */ +static int idmouse_suspend(struct usb_interface *intf, pm_message_t message) +{ + return 0; +} + +static int idmouse_resume(struct usb_interface *intf) +{ + return 0; +} + +static inline void idmouse_delete(struct usb_idmouse *dev) +{ + kfree(dev->bulk_in_buffer); + kfree(dev); +} + +static int idmouse_open(struct inode *inode, struct file *file) +{ + struct usb_idmouse *dev; + struct usb_interface *interface; + int result; + + /* get the interface from minor number and driver information */ + interface = usb_find_interface(&idmouse_driver, iminor(inode)); + if (!interface) + return -ENODEV; + + /* get the device information block from the interface */ + dev = usb_get_intfdata(interface); + if (!dev) + return -ENODEV; + + /* lock this device */ + mutex_lock(&dev->lock); + + /* check if already open */ + if (dev->open) { + + /* already open, so fail */ + result = -EBUSY; + + } else { + + /* create a new image and check for success */ + result = usb_autopm_get_interface(interface); + if (result) + goto error; + result = idmouse_create_image(dev); + usb_autopm_put_interface(interface); + if (result) + goto error; + + /* increment our usage count for the driver */ + ++dev->open; + + /* save our object in the file's private structure */ + file->private_data = dev; + + } + +error: + + /* unlock this device */ + mutex_unlock(&dev->lock); + return result; +} + +static int idmouse_release(struct inode *inode, struct file *file) +{ + struct usb_idmouse *dev; + + dev = file->private_data; + + if (dev == NULL) + return -ENODEV; + + /* lock our device */ + mutex_lock(&dev->lock); + + --dev->open; + + if (!dev->present) { + /* the device was unplugged before the file was released */ + mutex_unlock(&dev->lock); + idmouse_delete(dev); + } else { + mutex_unlock(&dev->lock); + } + return 0; +} + +static ssize_t idmouse_read(struct file *file, char __user *buffer, size_t count, + loff_t * ppos) +{ + struct usb_idmouse *dev = file->private_data; + int result; + + /* lock this object */ + mutex_lock(&dev->lock); + + /* verify that the device wasn't unplugged */ + if (!dev->present) { + mutex_unlock(&dev->lock); + return -ENODEV; + } + + result = simple_read_from_buffer(buffer, count, ppos, + dev->bulk_in_buffer, IMGSIZE); + /* unlock the device */ + mutex_unlock(&dev->lock); + return result; +} + +static int idmouse_probe(struct usb_interface *interface, + const struct usb_device_id *id) +{ + struct usb_device *udev = interface_to_usbdev(interface); + struct usb_idmouse *dev; + struct usb_host_interface *iface_desc; + struct usb_endpoint_descriptor *endpoint; + int result; + + /* check if we have gotten the data or the hid interface */ + iface_desc = interface->cur_altsetting; + if (iface_desc->desc.bInterfaceClass != 0x0A) + return -ENODEV; + + if (iface_desc->desc.bNumEndpoints < 1) + return -ENODEV; + + /* allocate memory for our device state and initialize it */ + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (dev == NULL) + return -ENOMEM; + + mutex_init(&dev->lock); + dev->udev = udev; + dev->interface = interface; + + /* set up the endpoint information - use only the first bulk-in endpoint */ + result = usb_find_bulk_in_endpoint(iface_desc, &endpoint); + if (result) { + dev_err(&interface->dev, "Unable to find bulk-in endpoint.\n"); + idmouse_delete(dev); + return result; + } + + dev->orig_bi_size = usb_endpoint_maxp(endpoint); + dev->bulk_in_size = 0x200; /* works _much_ faster */ + dev->bulk_in_endpointAddr = endpoint->bEndpointAddress; + dev->bulk_in_buffer = kmalloc(IMGSIZE + dev->bulk_in_size, GFP_KERNEL); + if (!dev->bulk_in_buffer) { + idmouse_delete(dev); + return -ENOMEM; + } + + /* allow device read, write and ioctl */ + dev->present = 1; + + /* we can register the device now, as it is ready */ + usb_set_intfdata(interface, dev); + result = usb_register_dev(interface, &idmouse_class); + if (result) { + /* something prevented us from registering this device */ + dev_err(&interface->dev, "Unable to allocate minor number.\n"); + idmouse_delete(dev); + return result; + } + + /* be noisy */ + dev_info(&interface->dev,"%s now attached\n",DRIVER_DESC); + + return 0; +} + +static void idmouse_disconnect(struct usb_interface *interface) +{ + struct usb_idmouse *dev = usb_get_intfdata(interface); + + /* give back our minor */ + usb_deregister_dev(interface, &idmouse_class); + + /* lock the device */ + mutex_lock(&dev->lock); + + /* prevent device read, write and ioctl */ + dev->present = 0; + + /* if the device is opened, idmouse_release will clean this up */ + if (!dev->open) { + mutex_unlock(&dev->lock); + idmouse_delete(dev); + } else { + /* unlock */ + mutex_unlock(&dev->lock); + } + + dev_info(&interface->dev, "disconnected\n"); +} + +module_usb_driver(idmouse_driver); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + -- cgit v1.2.3