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/pnp/interface.c | 470 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 470 insertions(+) create mode 100644 drivers/pnp/interface.c (limited to 'drivers/pnp/interface.c') diff --git a/drivers/pnp/interface.c b/drivers/pnp/interface.c new file mode 100644 index 000000000..44efcdb87 --- /dev/null +++ b/drivers/pnp/interface.c @@ -0,0 +1,470 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * interface.c - contains everything related to the user interface + * + * Some code, especially possible resource dumping is based on isapnp_proc.c (c) Jaroslav Kysela + * Copyright 2002 Adam Belay + * Copyright (C) 2008 Hewlett-Packard Development Company, L.P. + * Bjorn Helgaas + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "base.h" + +struct pnp_info_buffer { + char *buffer; /* pointer to begin of buffer */ + char *curr; /* current position in buffer */ + unsigned long size; /* current size */ + unsigned long len; /* total length of buffer */ + int stop; /* stop flag */ + int error; /* error code */ +}; + +typedef struct pnp_info_buffer pnp_info_buffer_t; + +__printf(2, 3) +static int pnp_printf(pnp_info_buffer_t * buffer, char *fmt, ...) +{ + va_list args; + int res; + + if (buffer->stop || buffer->error) + return 0; + va_start(args, fmt); + res = vsnprintf(buffer->curr, buffer->len - buffer->size, fmt, args); + va_end(args); + if (buffer->size + res >= buffer->len) { + buffer->stop = 1; + return 0; + } + buffer->curr += res; + buffer->size += res; + return res; +} + +static void pnp_print_port(pnp_info_buffer_t * buffer, char *space, + struct pnp_port *port) +{ + pnp_printf(buffer, "%sport %#llx-%#llx, align %#llx, size %#llx, " + "%i-bit address decoding\n", space, + (unsigned long long) port->min, + (unsigned long long) port->max, + port->align ? ((unsigned long long) port->align - 1) : 0, + (unsigned long long) port->size, + port->flags & IORESOURCE_IO_16BIT_ADDR ? 16 : 10); +} + +static void pnp_print_irq(pnp_info_buffer_t * buffer, char *space, + struct pnp_irq *irq) +{ + int first = 1, i; + + pnp_printf(buffer, "%sirq ", space); + for (i = 0; i < PNP_IRQ_NR; i++) + if (test_bit(i, irq->map.bits)) { + if (!first) { + pnp_printf(buffer, ","); + } else { + first = 0; + } + if (i == 2 || i == 9) + pnp_printf(buffer, "2/9"); + else + pnp_printf(buffer, "%i", i); + } + if (bitmap_empty(irq->map.bits, PNP_IRQ_NR)) + pnp_printf(buffer, ""); + if (irq->flags & IORESOURCE_IRQ_HIGHEDGE) + pnp_printf(buffer, " High-Edge"); + if (irq->flags & IORESOURCE_IRQ_LOWEDGE) + pnp_printf(buffer, " Low-Edge"); + if (irq->flags & IORESOURCE_IRQ_HIGHLEVEL) + pnp_printf(buffer, " High-Level"); + if (irq->flags & IORESOURCE_IRQ_LOWLEVEL) + pnp_printf(buffer, " Low-Level"); + if (irq->flags & IORESOURCE_IRQ_OPTIONAL) + pnp_printf(buffer, " (optional)"); + pnp_printf(buffer, "\n"); +} + +static void pnp_print_dma(pnp_info_buffer_t * buffer, char *space, + struct pnp_dma *dma) +{ + int first = 1, i; + char *s; + + pnp_printf(buffer, "%sdma ", space); + for (i = 0; i < 8; i++) + if (dma->map & (1 << i)) { + if (!first) { + pnp_printf(buffer, ","); + } else { + first = 0; + } + pnp_printf(buffer, "%i", i); + } + if (!dma->map) + pnp_printf(buffer, ""); + switch (dma->flags & IORESOURCE_DMA_TYPE_MASK) { + case IORESOURCE_DMA_8BIT: + s = "8-bit"; + break; + case IORESOURCE_DMA_8AND16BIT: + s = "8-bit&16-bit"; + break; + default: + s = "16-bit"; + } + pnp_printf(buffer, " %s", s); + if (dma->flags & IORESOURCE_DMA_MASTER) + pnp_printf(buffer, " master"); + if (dma->flags & IORESOURCE_DMA_BYTE) + pnp_printf(buffer, " byte-count"); + if (dma->flags & IORESOURCE_DMA_WORD) + pnp_printf(buffer, " word-count"); + switch (dma->flags & IORESOURCE_DMA_SPEED_MASK) { + case IORESOURCE_DMA_TYPEA: + s = "type-A"; + break; + case IORESOURCE_DMA_TYPEB: + s = "type-B"; + break; + case IORESOURCE_DMA_TYPEF: + s = "type-F"; + break; + default: + s = "compatible"; + break; + } + pnp_printf(buffer, " %s\n", s); +} + +static void pnp_print_mem(pnp_info_buffer_t * buffer, char *space, + struct pnp_mem *mem) +{ + char *s; + + pnp_printf(buffer, "%sMemory %#llx-%#llx, align %#llx, size %#llx", + space, (unsigned long long) mem->min, + (unsigned long long) mem->max, + (unsigned long long) mem->align, + (unsigned long long) mem->size); + if (mem->flags & IORESOURCE_MEM_WRITEABLE) + pnp_printf(buffer, ", writeable"); + if (mem->flags & IORESOURCE_MEM_CACHEABLE) + pnp_printf(buffer, ", cacheable"); + if (mem->flags & IORESOURCE_MEM_RANGELENGTH) + pnp_printf(buffer, ", range-length"); + if (mem->flags & IORESOURCE_MEM_SHADOWABLE) + pnp_printf(buffer, ", shadowable"); + if (mem->flags & IORESOURCE_MEM_EXPANSIONROM) + pnp_printf(buffer, ", expansion ROM"); + switch (mem->flags & IORESOURCE_MEM_TYPE_MASK) { + case IORESOURCE_MEM_8BIT: + s = "8-bit"; + break; + case IORESOURCE_MEM_8AND16BIT: + s = "8-bit&16-bit"; + break; + case IORESOURCE_MEM_32BIT: + s = "32-bit"; + break; + default: + s = "16-bit"; + } + pnp_printf(buffer, ", %s\n", s); +} + +static void pnp_print_option(pnp_info_buffer_t * buffer, char *space, + struct pnp_option *option) +{ + switch (option->type) { + case IORESOURCE_IO: + pnp_print_port(buffer, space, &option->u.port); + break; + case IORESOURCE_MEM: + pnp_print_mem(buffer, space, &option->u.mem); + break; + case IORESOURCE_IRQ: + pnp_print_irq(buffer, space, &option->u.irq); + break; + case IORESOURCE_DMA: + pnp_print_dma(buffer, space, &option->u.dma); + break; + } +} + +static ssize_t options_show(struct device *dmdev, struct device_attribute *attr, + char *buf) +{ + struct pnp_dev *dev = to_pnp_dev(dmdev); + pnp_info_buffer_t *buffer; + struct pnp_option *option; + int ret, dep = 0, set = 0; + char *indent; + + buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); + if (!buffer) + return -ENOMEM; + + buffer->len = PAGE_SIZE; + buffer->buffer = buf; + buffer->curr = buffer->buffer; + + list_for_each_entry(option, &dev->options, list) { + if (pnp_option_is_dependent(option)) { + indent = " "; + if (!dep || pnp_option_set(option) != set) { + set = pnp_option_set(option); + dep = 1; + pnp_printf(buffer, "Dependent: %02i - " + "Priority %s\n", set, + pnp_option_priority_name(option)); + } + } else { + dep = 0; + indent = ""; + } + pnp_print_option(buffer, indent, option); + } + + ret = (buffer->curr - buf); + kfree(buffer); + return ret; +} +static DEVICE_ATTR_RO(options); + +static ssize_t resources_show(struct device *dmdev, + struct device_attribute *attr, char *buf) +{ + struct pnp_dev *dev = to_pnp_dev(dmdev); + pnp_info_buffer_t *buffer; + struct pnp_resource *pnp_res; + struct resource *res; + int ret; + + if (!dev) + return -EINVAL; + + buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); + if (!buffer) + return -ENOMEM; + + buffer->len = PAGE_SIZE; + buffer->buffer = buf; + buffer->curr = buffer->buffer; + + pnp_printf(buffer, "state = %s\n", dev->active ? "active" : "disabled"); + + list_for_each_entry(pnp_res, &dev->resources, list) { + res = &pnp_res->res; + + pnp_printf(buffer, pnp_resource_type_name(res)); + + if (res->flags & IORESOURCE_DISABLED) { + pnp_printf(buffer, " disabled\n"); + continue; + } + + switch (pnp_resource_type(res)) { + case IORESOURCE_IO: + case IORESOURCE_MEM: + case IORESOURCE_BUS: + pnp_printf(buffer, " %#llx-%#llx%s\n", + (unsigned long long) res->start, + (unsigned long long) res->end, + res->flags & IORESOURCE_WINDOW ? + " window" : ""); + break; + case IORESOURCE_IRQ: + case IORESOURCE_DMA: + pnp_printf(buffer, " %lld\n", + (unsigned long long) res->start); + break; + } + } + + ret = (buffer->curr - buf); + kfree(buffer); + return ret; +} + +static char *pnp_get_resource_value(char *buf, + unsigned long type, + resource_size_t *start, + resource_size_t *end, + unsigned long *flags) +{ + if (start) + *start = 0; + if (end) + *end = 0; + if (flags) + *flags = 0; + + /* TBD: allow for disabled resources */ + + buf = skip_spaces(buf); + if (start) { + *start = simple_strtoull(buf, &buf, 0); + if (end) { + buf = skip_spaces(buf); + if (*buf == '-') { + buf = skip_spaces(buf + 1); + *end = simple_strtoull(buf, &buf, 0); + } else + *end = *start; + } + } + + /* TBD: allow for additional flags, e.g., IORESOURCE_WINDOW */ + + return buf; +} + +static ssize_t resources_store(struct device *dmdev, + struct device_attribute *attr, const char *ubuf, + size_t count) +{ + struct pnp_dev *dev = to_pnp_dev(dmdev); + char *buf = (void *)ubuf; + int retval = 0; + + if (dev->status & PNP_ATTACHED) { + retval = -EBUSY; + dev_info(&dev->dev, "in use; can't configure\n"); + goto done; + } + + buf = skip_spaces(buf); + if (!strncasecmp(buf, "disable", 7)) { + retval = pnp_disable_dev(dev); + goto done; + } + if (!strncasecmp(buf, "activate", 8)) { + retval = pnp_activate_dev(dev); + goto done; + } + if (!strncasecmp(buf, "fill", 4)) { + if (dev->active) + goto done; + retval = pnp_auto_config_dev(dev); + goto done; + } + if (!strncasecmp(buf, "auto", 4)) { + if (dev->active) + goto done; + pnp_init_resources(dev); + retval = pnp_auto_config_dev(dev); + goto done; + } + if (!strncasecmp(buf, "clear", 5)) { + if (dev->active) + goto done; + pnp_init_resources(dev); + goto done; + } + if (!strncasecmp(buf, "get", 3)) { + mutex_lock(&pnp_res_mutex); + if (pnp_can_read(dev)) + dev->protocol->get(dev); + mutex_unlock(&pnp_res_mutex); + goto done; + } + if (!strncasecmp(buf, "set", 3)) { + resource_size_t start; + resource_size_t end; + unsigned long flags; + + if (dev->active) + goto done; + buf += 3; + pnp_init_resources(dev); + mutex_lock(&pnp_res_mutex); + while (1) { + buf = skip_spaces(buf); + if (!strncasecmp(buf, "io", 2)) { + buf = pnp_get_resource_value(buf + 2, + IORESOURCE_IO, + &start, &end, + &flags); + pnp_add_io_resource(dev, start, end, flags); + } else if (!strncasecmp(buf, "mem", 3)) { + buf = pnp_get_resource_value(buf + 3, + IORESOURCE_MEM, + &start, &end, + &flags); + pnp_add_mem_resource(dev, start, end, flags); + } else if (!strncasecmp(buf, "irq", 3)) { + buf = pnp_get_resource_value(buf + 3, + IORESOURCE_IRQ, + &start, NULL, + &flags); + pnp_add_irq_resource(dev, start, flags); + } else if (!strncasecmp(buf, "dma", 3)) { + buf = pnp_get_resource_value(buf + 3, + IORESOURCE_DMA, + &start, NULL, + &flags); + pnp_add_dma_resource(dev, start, flags); + } else if (!strncasecmp(buf, "bus", 3)) { + buf = pnp_get_resource_value(buf + 3, + IORESOURCE_BUS, + &start, &end, + NULL); + pnp_add_bus_resource(dev, start, end); + } else + break; + } + mutex_unlock(&pnp_res_mutex); + goto done; + } + +done: + if (retval < 0) + return retval; + return count; +} +static DEVICE_ATTR_RW(resources); + +static ssize_t id_show(struct device *dmdev, struct device_attribute *attr, + char *buf) +{ + char *str = buf; + struct pnp_dev *dev = to_pnp_dev(dmdev); + struct pnp_id *pos = dev->id; + + while (pos) { + str += sprintf(str, "%s\n", pos->id); + pos = pos->next; + } + return (str - buf); +} +static DEVICE_ATTR_RO(id); + +static struct attribute *pnp_dev_attrs[] = { + &dev_attr_resources.attr, + &dev_attr_options.attr, + &dev_attr_id.attr, + NULL, +}; + +static const struct attribute_group pnp_dev_group = { + .attrs = pnp_dev_attrs, +}; + +const struct attribute_group *pnp_dev_groups[] = { + &pnp_dev_group, + NULL, +}; -- cgit v1.2.3