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/core/endpoint.c | 191 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 191 insertions(+) create mode 100644 drivers/usb/core/endpoint.c (limited to 'drivers/usb/core/endpoint.c') diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c new file mode 100644 index 000000000..a2530811c --- /dev/null +++ b/drivers/usb/core/endpoint.c @@ -0,0 +1,191 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * drivers/usb/core/endpoint.c + * + * (C) Copyright 2002,2004,2006 Greg Kroah-Hartman + * (C) Copyright 2002,2004 IBM Corp. + * (C) Copyright 2006 Novell Inc. + * + * Released under the GPLv2 only. + * + * Endpoint sysfs stuff + */ + +#include +#include +#include +#include +#include "usb.h" + +struct ep_device { + struct usb_endpoint_descriptor *desc; + struct usb_device *udev; + struct device dev; +}; +#define to_ep_device(_dev) \ + container_of(_dev, struct ep_device, dev) + +struct ep_attribute { + struct attribute attr; + ssize_t (*show)(struct usb_device *, + struct usb_endpoint_descriptor *, char *); +}; +#define to_ep_attribute(_attr) \ + container_of(_attr, struct ep_attribute, attr) + +#define usb_ep_attr(field, format_string) \ +static ssize_t field##_show(struct device *dev, \ + struct device_attribute *attr, \ + char *buf) \ +{ \ + struct ep_device *ep = to_ep_device(dev); \ + return sprintf(buf, format_string, ep->desc->field); \ +} \ +static DEVICE_ATTR_RO(field) + +usb_ep_attr(bLength, "%02x\n"); +usb_ep_attr(bEndpointAddress, "%02x\n"); +usb_ep_attr(bmAttributes, "%02x\n"); +usb_ep_attr(bInterval, "%02x\n"); + +static ssize_t wMaxPacketSize_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ep_device *ep = to_ep_device(dev); + return sprintf(buf, "%04x\n", usb_endpoint_maxp(ep->desc)); +} +static DEVICE_ATTR_RO(wMaxPacketSize); + +static ssize_t type_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct ep_device *ep = to_ep_device(dev); + char *type = "unknown"; + + switch (usb_endpoint_type(ep->desc)) { + case USB_ENDPOINT_XFER_CONTROL: + type = "Control"; + break; + case USB_ENDPOINT_XFER_ISOC: + type = "Isoc"; + break; + case USB_ENDPOINT_XFER_BULK: + type = "Bulk"; + break; + case USB_ENDPOINT_XFER_INT: + type = "Interrupt"; + break; + } + return sprintf(buf, "%s\n", type); +} +static DEVICE_ATTR_RO(type); + +static ssize_t interval_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct ep_device *ep = to_ep_device(dev); + unsigned int interval; + char unit; + + interval = usb_decode_interval(ep->desc, ep->udev->speed); + if (interval % 1000) { + unit = 'u'; + } else { + unit = 'm'; + interval /= 1000; + } + + return sprintf(buf, "%d%cs\n", interval, unit); +} +static DEVICE_ATTR_RO(interval); + +static ssize_t direction_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct ep_device *ep = to_ep_device(dev); + char *direction; + + if (usb_endpoint_xfer_control(ep->desc)) + direction = "both"; + else if (usb_endpoint_dir_in(ep->desc)) + direction = "in"; + else + direction = "out"; + return sprintf(buf, "%s\n", direction); +} +static DEVICE_ATTR_RO(direction); + +static struct attribute *ep_dev_attrs[] = { + &dev_attr_bLength.attr, + &dev_attr_bEndpointAddress.attr, + &dev_attr_bmAttributes.attr, + &dev_attr_bInterval.attr, + &dev_attr_wMaxPacketSize.attr, + &dev_attr_interval.attr, + &dev_attr_type.attr, + &dev_attr_direction.attr, + NULL, +}; +static const struct attribute_group ep_dev_attr_grp = { + .attrs = ep_dev_attrs, +}; +static const struct attribute_group *ep_dev_groups[] = { + &ep_dev_attr_grp, + NULL +}; + +static void ep_device_release(struct device *dev) +{ + struct ep_device *ep_dev = to_ep_device(dev); + + kfree(ep_dev); +} + +struct device_type usb_ep_device_type = { + .name = "usb_endpoint", + .release = ep_device_release, +}; + +int usb_create_ep_devs(struct device *parent, + struct usb_host_endpoint *endpoint, + struct usb_device *udev) +{ + struct ep_device *ep_dev; + int retval; + + ep_dev = kzalloc(sizeof(*ep_dev), GFP_KERNEL); + if (!ep_dev) { + retval = -ENOMEM; + goto exit; + } + + ep_dev->desc = &endpoint->desc; + ep_dev->udev = udev; + ep_dev->dev.groups = ep_dev_groups; + ep_dev->dev.type = &usb_ep_device_type; + ep_dev->dev.parent = parent; + dev_set_name(&ep_dev->dev, "ep_%02x", endpoint->desc.bEndpointAddress); + + retval = device_register(&ep_dev->dev); + if (retval) + goto error_register; + + device_enable_async_suspend(&ep_dev->dev); + endpoint->ep_dev = ep_dev; + return retval; + +error_register: + put_device(&ep_dev->dev); +exit: + return retval; +} + +void usb_remove_ep_devs(struct usb_host_endpoint *endpoint) +{ + struct ep_device *ep_dev = endpoint->ep_dev; + + if (ep_dev) { + device_unregister(&ep_dev->dev); + endpoint->ep_dev = NULL; + } +} -- cgit v1.2.3