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/pnpbios/proc.c | 286 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 286 insertions(+) create mode 100644 drivers/pnp/pnpbios/proc.c (limited to 'drivers/pnp/pnpbios/proc.c') diff --git a/drivers/pnp/pnpbios/proc.c b/drivers/pnp/pnpbios/proc.c new file mode 100644 index 000000000..0f0d819b1 --- /dev/null +++ b/drivers/pnp/pnpbios/proc.c @@ -0,0 +1,286 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * /proc/bus/pnp interface for Plug and Play devices + * + * Written by David Hinds, dahinds@users.sourceforge.net + * Modified by Thomas Hood + * + * The .../devices and .../ and .../boot/ files are + * utilized by the lspnp and setpnp utilities, supplied with the + * pcmcia-cs package. + * http://pcmcia-cs.sourceforge.net + * + * The .../escd file is utilized by the lsescd utility written by + * Gunther Mayer. + * + * The .../legacy_device_resources file is not used yet. + * + * The other files are human-readable. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "pnpbios.h" + +static struct proc_dir_entry *proc_pnp = NULL; +static struct proc_dir_entry *proc_pnp_boot = NULL; + +static int pnpconfig_proc_show(struct seq_file *m, void *v) +{ + struct pnp_isa_config_struc pnps; + + if (pnp_bios_isapnp_config(&pnps)) + return -EIO; + seq_printf(m, "structure_revision %d\n" + "number_of_CSNs %d\n" + "ISA_read_data_port 0x%x\n", + pnps.revision, pnps.no_csns, pnps.isa_rd_data_port); + return 0; +} + +static int escd_info_proc_show(struct seq_file *m, void *v) +{ + struct escd_info_struc escd; + + if (pnp_bios_escd_info(&escd)) + return -EIO; + seq_printf(m, "min_ESCD_write_size %d\n" + "ESCD_size %d\n" + "NVRAM_base 0x%x\n", + escd.min_escd_write_size, + escd.escd_size, escd.nv_storage_base); + return 0; +} + +#define MAX_SANE_ESCD_SIZE (32*1024) +static int escd_proc_show(struct seq_file *m, void *v) +{ + struct escd_info_struc escd; + char *tmpbuf; + int escd_size; + + if (pnp_bios_escd_info(&escd)) + return -EIO; + + /* sanity check */ + if (escd.escd_size > MAX_SANE_ESCD_SIZE) { + printk(KERN_ERR + "PnPBIOS: %s: ESCD size reported by BIOS escd_info call is too great\n", __func__); + return -EFBIG; + } + + tmpbuf = kzalloc(escd.escd_size, GFP_KERNEL); + if (!tmpbuf) + return -ENOMEM; + + if (pnp_bios_read_escd(tmpbuf, escd.nv_storage_base)) { + kfree(tmpbuf); + return -EIO; + } + + escd_size = + (unsigned char)(tmpbuf[0]) + (unsigned char)(tmpbuf[1]) * 256; + + /* sanity check */ + if (escd_size > MAX_SANE_ESCD_SIZE) { + printk(KERN_ERR "PnPBIOS: %s: ESCD size reported by" + " BIOS read_escd call is too great\n", __func__); + kfree(tmpbuf); + return -EFBIG; + } + + seq_write(m, tmpbuf, escd_size); + kfree(tmpbuf); + return 0; +} + +static int pnp_legacyres_proc_show(struct seq_file *m, void *v) +{ + void *buf; + + buf = kmalloc(65536, GFP_KERNEL); + if (!buf) + return -ENOMEM; + if (pnp_bios_get_stat_res(buf)) { + kfree(buf); + return -EIO; + } + + seq_write(m, buf, 65536); + kfree(buf); + return 0; +} + +static int pnp_devices_proc_show(struct seq_file *m, void *v) +{ + struct pnp_bios_node *node; + u8 nodenum; + + node = kzalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) + return -ENOMEM; + + for (nodenum = 0; nodenum < 0xff;) { + u8 thisnodenum = nodenum; + + if (pnp_bios_get_dev_node(&nodenum, PNPMODE_DYNAMIC, node)) + break; + seq_printf(m, "%02x\t%08x\t%3phC\t%04x\n", + node->handle, node->eisa_id, + node->type_code, node->flags); + if (nodenum <= thisnodenum) { + printk(KERN_ERR + "%s Node number 0x%x is out of sequence following node 0x%x. Aborting.\n", + "PnPBIOS: proc_read_devices:", + (unsigned int)nodenum, + (unsigned int)thisnodenum); + break; + } + } + kfree(node); + return 0; +} + +static int pnpbios_proc_show(struct seq_file *m, void *v) +{ + void *data = m->private; + struct pnp_bios_node *node; + int boot = (long)data >> 8; + u8 nodenum = (long)data; + int len; + + node = kzalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) + return -ENOMEM; + if (pnp_bios_get_dev_node(&nodenum, boot, node)) { + kfree(node); + return -EIO; + } + len = node->size - sizeof(struct pnp_bios_node); + seq_write(m, node->data, len); + kfree(node); + return 0; +} + +static int pnpbios_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, pnpbios_proc_show, pde_data(inode)); +} + +static ssize_t pnpbios_proc_write(struct file *file, const char __user *buf, + size_t count, loff_t *pos) +{ + void *data = pde_data(file_inode(file)); + struct pnp_bios_node *node; + int boot = (long)data >> 8; + u8 nodenum = (long)data; + int ret = count; + + node = kzalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) + return -ENOMEM; + if (pnp_bios_get_dev_node(&nodenum, boot, node)) { + ret = -EIO; + goto out; + } + if (count != node->size - sizeof(struct pnp_bios_node)) { + ret = -EINVAL; + goto out; + } + if (copy_from_user(node->data, buf, count)) { + ret = -EFAULT; + goto out; + } + if (pnp_bios_set_dev_node(node->handle, boot, node) != 0) { + ret = -EINVAL; + goto out; + } + ret = count; +out: + kfree(node); + return ret; +} + +static const struct proc_ops pnpbios_proc_ops = { + .proc_open = pnpbios_proc_open, + .proc_read = seq_read, + .proc_lseek = seq_lseek, + .proc_release = single_release, + .proc_write = pnpbios_proc_write, +}; + +int pnpbios_interface_attach_device(struct pnp_bios_node *node) +{ + char name[3]; + + sprintf(name, "%02x", node->handle); + + if (!proc_pnp) + return -EIO; + if (!pnpbios_dont_use_current_config) { + proc_create_data(name, 0644, proc_pnp, &pnpbios_proc_ops, + (void *)(long)(node->handle)); + } + + if (!proc_pnp_boot) + return -EIO; + if (proc_create_data(name, 0644, proc_pnp_boot, &pnpbios_proc_ops, + (void *)(long)(node->handle + 0x100))) + return 0; + return -EIO; +} + +/* + * When this is called, pnpbios functions are assumed to + * work and the pnpbios_dont_use_current_config flag + * should already have been set to the appropriate value + */ +int __init pnpbios_proc_init(void) +{ + proc_pnp = proc_mkdir("bus/pnp", NULL); + if (!proc_pnp) + return -EIO; + proc_pnp_boot = proc_mkdir("boot", proc_pnp); + if (!proc_pnp_boot) + return -EIO; + proc_create_single("devices", 0, proc_pnp, pnp_devices_proc_show); + proc_create_single("configuration_info", 0, proc_pnp, + pnpconfig_proc_show); + proc_create_single("escd_info", 0, proc_pnp, escd_info_proc_show); + proc_create_single("escd", S_IRUSR, proc_pnp, escd_proc_show); + proc_create_single("legacy_device_resources", 0, proc_pnp, + pnp_legacyres_proc_show); + return 0; +} + +void __exit pnpbios_proc_exit(void) +{ + int i; + char name[3]; + + if (!proc_pnp) + return; + + for (i = 0; i < 0xff; i++) { + sprintf(name, "%02x", i); + if (!pnpbios_dont_use_current_config) + remove_proc_entry(name, proc_pnp); + remove_proc_entry(name, proc_pnp_boot); + } + remove_proc_entry("legacy_device_resources", proc_pnp); + remove_proc_entry("escd", proc_pnp); + remove_proc_entry("escd_info", proc_pnp); + remove_proc_entry("configuration_info", proc_pnp); + remove_proc_entry("devices", proc_pnp); + remove_proc_entry("boot", proc_pnp); + remove_proc_entry("bus/pnp", NULL); +} -- cgit v1.2.3