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/atm/xusbatm.c | 216 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 216 insertions(+) create mode 100644 drivers/usb/atm/xusbatm.c (limited to 'drivers/usb/atm/xusbatm.c') diff --git a/drivers/usb/atm/xusbatm.c b/drivers/usb/atm/xusbatm.c new file mode 100644 index 000000000..0befbf63d --- /dev/null +++ b/drivers/usb/atm/xusbatm.c @@ -0,0 +1,216 @@ +// SPDX-License-Identifier: GPL-2.0+ +/****************************************************************************** + * xusbatm.c - dumb usbatm-based driver for modems initialized in userspace + * + * Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru) + ******************************************************************************/ + +#include +#include /* for eth_random_addr() */ + +#include "usbatm.h" + + +#define XUSBATM_DRIVERS_MAX 8 + +#define XUSBATM_PARM(name, type, parmtype, desc) \ + static type name[XUSBATM_DRIVERS_MAX]; \ + static unsigned int num_##name; \ + module_param_array(name, parmtype, &num_##name, 0444); \ + MODULE_PARM_DESC(name, desc) + +XUSBATM_PARM(vendor, unsigned short, ushort, "USB device vendor"); +XUSBATM_PARM(product, unsigned short, ushort, "USB device product"); + +XUSBATM_PARM(rx_endpoint, unsigned char, byte, "rx endpoint number"); +XUSBATM_PARM(tx_endpoint, unsigned char, byte, "tx endpoint number"); +XUSBATM_PARM(rx_padding, unsigned char, byte, "rx padding (default 0)"); +XUSBATM_PARM(tx_padding, unsigned char, byte, "tx padding (default 0)"); +XUSBATM_PARM(rx_altsetting, unsigned char, byte, "rx altsetting (default 0)"); +XUSBATM_PARM(tx_altsetting, unsigned char, byte, "rx altsetting (default 0)"); + +static const char xusbatm_driver_name[] = "xusbatm"; + +static struct usbatm_driver xusbatm_drivers[XUSBATM_DRIVERS_MAX]; +static struct usb_device_id xusbatm_usb_ids[XUSBATM_DRIVERS_MAX + 1]; +static struct usb_driver xusbatm_usb_driver; + +static struct usb_interface *xusbatm_find_intf(struct usb_device *usb_dev, int altsetting, u8 ep) +{ + struct usb_host_interface *alt; + struct usb_interface *intf; + int i, j; + + for (i = 0; i < usb_dev->actconfig->desc.bNumInterfaces; i++) + if ((intf = usb_dev->actconfig->interface[i]) && (alt = usb_altnum_to_altsetting(intf, altsetting))) + for (j = 0; j < alt->desc.bNumEndpoints; j++) + if (alt->endpoint[j].desc.bEndpointAddress == ep) + return intf; + return NULL; +} + +static int xusbatm_capture_intf(struct usbatm_data *usbatm, struct usb_device *usb_dev, + struct usb_interface *intf, int altsetting, int claim) +{ + int ifnum = intf->altsetting->desc.bInterfaceNumber; + int ret; + + if (claim && (ret = usb_driver_claim_interface(&xusbatm_usb_driver, intf, usbatm))) { + usb_err(usbatm, "%s: failed to claim interface %2d (%d)!\n", __func__, ifnum, ret); + return ret; + } + ret = usb_set_interface(usb_dev, ifnum, altsetting); + if (ret) { + usb_err(usbatm, "%s: altsetting %2d for interface %2d failed (%d)!\n", __func__, altsetting, ifnum, ret); + return ret; + } + return 0; +} + +static void xusbatm_release_intf(struct usb_device *usb_dev, struct usb_interface *intf, int claimed) +{ + if (claimed) { + usb_set_intfdata(intf, NULL); + usb_driver_release_interface(&xusbatm_usb_driver, intf); + } +} + +static int xusbatm_bind(struct usbatm_data *usbatm, + struct usb_interface *intf, const struct usb_device_id *id) +{ + struct usb_device *usb_dev = interface_to_usbdev(intf); + int drv_ix = id - xusbatm_usb_ids; + int rx_alt = rx_altsetting[drv_ix]; + int tx_alt = tx_altsetting[drv_ix]; + struct usb_interface *rx_intf = xusbatm_find_intf(usb_dev, rx_alt, rx_endpoint[drv_ix]); + struct usb_interface *tx_intf = xusbatm_find_intf(usb_dev, tx_alt, tx_endpoint[drv_ix]); + int ret; + + usb_dbg(usbatm, "%s: binding driver %d: vendor %04x product %04x" + " rx: ep %02x padd %d alt %2d tx: ep %02x padd %d alt %2d\n", + __func__, drv_ix, vendor[drv_ix], product[drv_ix], + rx_endpoint[drv_ix], rx_padding[drv_ix], rx_alt, + tx_endpoint[drv_ix], tx_padding[drv_ix], tx_alt); + + if (!rx_intf || !tx_intf) { + if (!rx_intf) + usb_dbg(usbatm, "%s: no interface contains endpoint %02x in altsetting %2d\n", + __func__, rx_endpoint[drv_ix], rx_alt); + if (!tx_intf) + usb_dbg(usbatm, "%s: no interface contains endpoint %02x in altsetting %2d\n", + __func__, tx_endpoint[drv_ix], tx_alt); + return -ENODEV; + } + + if ((rx_intf != intf) && (tx_intf != intf)) + return -ENODEV; + + if ((rx_intf == tx_intf) && (rx_alt != tx_alt)) { + usb_err(usbatm, "%s: altsettings clash on interface %2d (%2d vs %2d)!\n", __func__, + rx_intf->altsetting->desc.bInterfaceNumber, rx_alt, tx_alt); + return -EINVAL; + } + + usb_dbg(usbatm, "%s: rx If#=%2d; tx If#=%2d\n", __func__, + rx_intf->altsetting->desc.bInterfaceNumber, + tx_intf->altsetting->desc.bInterfaceNumber); + + ret = xusbatm_capture_intf(usbatm, usb_dev, rx_intf, rx_alt, rx_intf != intf); + if (ret) + return ret; + + if ((tx_intf != rx_intf) && (ret = xusbatm_capture_intf(usbatm, usb_dev, tx_intf, tx_alt, tx_intf != intf))) { + xusbatm_release_intf(usb_dev, rx_intf, rx_intf != intf); + return ret; + } + + return 0; +} + +static void xusbatm_unbind(struct usbatm_data *usbatm, + struct usb_interface *intf) +{ + struct usb_device *usb_dev = interface_to_usbdev(intf); + int i; + + usb_dbg(usbatm, "%s entered\n", __func__); + + for (i = 0; i < usb_dev->actconfig->desc.bNumInterfaces; i++) { + struct usb_interface *cur_intf = usb_dev->actconfig->interface[i]; + + if (cur_intf && (usb_get_intfdata(cur_intf) == usbatm)) { + usb_set_intfdata(cur_intf, NULL); + usb_driver_release_interface(&xusbatm_usb_driver, cur_intf); + } + } +} + +static int xusbatm_atm_start(struct usbatm_data *usbatm, + struct atm_dev *atm_dev) +{ + atm_dbg(usbatm, "%s entered\n", __func__); + + /* use random MAC as we've no way to get it from the device */ + eth_random_addr(atm_dev->esi); + + return 0; +} + + +static int xusbatm_usb_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + return usbatm_usb_probe(intf, id, + xusbatm_drivers + (id - xusbatm_usb_ids)); +} + +static struct usb_driver xusbatm_usb_driver = { + .name = xusbatm_driver_name, + .probe = xusbatm_usb_probe, + .disconnect = usbatm_usb_disconnect, + .id_table = xusbatm_usb_ids +}; + +static int __init xusbatm_init(void) +{ + int i; + + if (!num_vendor || + num_vendor != num_product || + num_vendor != num_rx_endpoint || + num_vendor != num_tx_endpoint) { + pr_warn("xusbatm: malformed module parameters\n"); + return -EINVAL; + } + + for (i = 0; i < num_vendor; i++) { + rx_endpoint[i] |= USB_DIR_IN; + tx_endpoint[i] &= USB_ENDPOINT_NUMBER_MASK; + + xusbatm_usb_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; + xusbatm_usb_ids[i].idVendor = vendor[i]; + xusbatm_usb_ids[i].idProduct = product[i]; + + xusbatm_drivers[i].driver_name = xusbatm_driver_name; + xusbatm_drivers[i].bind = xusbatm_bind; + xusbatm_drivers[i].unbind = xusbatm_unbind; + xusbatm_drivers[i].atm_start = xusbatm_atm_start; + xusbatm_drivers[i].bulk_in = rx_endpoint[i]; + xusbatm_drivers[i].bulk_out = tx_endpoint[i]; + xusbatm_drivers[i].rx_padding = rx_padding[i]; + xusbatm_drivers[i].tx_padding = tx_padding[i]; + } + + return usb_register(&xusbatm_usb_driver); +} +module_init(xusbatm_init); + +static void __exit xusbatm_exit(void) +{ + usb_deregister(&xusbatm_usb_driver); +} +module_exit(xusbatm_exit); + +MODULE_AUTHOR("Roman Kagan, Duncan Sands"); +MODULE_DESCRIPTION("Driver for USB ADSL modems initialized in userspace"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3