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/md/md-autodetect.c | 282 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 282 insertions(+) create mode 100644 drivers/md/md-autodetect.c (limited to 'drivers/md/md-autodetect.c') diff --git a/drivers/md/md-autodetect.c b/drivers/md/md-autodetect.c new file mode 100644 index 000000000..91836e6de --- /dev/null +++ b/drivers/md/md-autodetect.c @@ -0,0 +1,282 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "md.h" + +/* + * When md (and any require personalities) are compiled into the kernel + * (not a module), arrays can be assembles are boot time using with AUTODETECT + * where specially marked partitions are registered with md_autodetect_dev(), + * and with MD_BOOT where devices to be collected are given on the boot line + * with md=..... + * The code for that is here. + */ + +#ifdef CONFIG_MD_AUTODETECT +static int __initdata raid_noautodetect; +#else +static int __initdata raid_noautodetect=1; +#endif +static int __initdata raid_autopart; + +static struct md_setup_args { + int minor; + int partitioned; + int level; + int chunk; + char *device_names; +} md_setup_args[256] __initdata; + +static int md_setup_ents __initdata; + +/* + * Parse the command-line parameters given our kernel, but do not + * actually try to invoke the MD device now; that is handled by + * md_setup_drive after the low-level disk drivers have initialised. + * + * 27/11/1999: Fixed to work correctly with the 2.3 kernel (which + * assigns the task of parsing integer arguments to the + * invoked program now). Added ability to initialise all + * the MD devices (by specifying multiple "md=" lines) + * instead of just one. -- KTK + * 18May2000: Added support for persistent-superblock arrays: + * md=n,0,factor,fault,device-list uses RAID0 for device n + * md=n,-1,factor,fault,device-list uses LINEAR for device n + * md=n,device-list reads a RAID superblock from the devices + * elements in device-list are read by name_to_kdev_t so can be + * a hex number or something like /dev/hda1 /dev/sdb + * 2001-06-03: Dave Cinege + * Shifted name_to_kdev_t() and related operations to md_set_drive() + * for later execution. Rewrote section to make devfs compatible. + */ +static int __init md_setup(char *str) +{ + int minor, level, factor, fault, partitioned = 0; + char *pername = ""; + char *str1; + int ent; + + if (*str == 'd') { + partitioned = 1; + str++; + } + if (get_option(&str, &minor) != 2) { /* MD Number */ + printk(KERN_WARNING "md: Too few arguments supplied to md=.\n"); + return 0; + } + str1 = str; + for (ent=0 ; ent< md_setup_ents ; ent++) + if (md_setup_args[ent].minor == minor && + md_setup_args[ent].partitioned == partitioned) { + printk(KERN_WARNING "md: md=%s%d, Specified more than once. " + "Replacing previous definition.\n", partitioned?"d":"", minor); + break; + } + if (ent >= ARRAY_SIZE(md_setup_args)) { + printk(KERN_WARNING "md: md=%s%d - too many md initialisations\n", partitioned?"d":"", minor); + return 0; + } + if (ent >= md_setup_ents) + md_setup_ents++; + switch (get_option(&str, &level)) { /* RAID level */ + case 2: /* could be 0 or -1.. */ + if (level == 0 || level == LEVEL_LINEAR) { + if (get_option(&str, &factor) != 2 || /* Chunk Size */ + get_option(&str, &fault) != 2) { + printk(KERN_WARNING "md: Too few arguments supplied to md=.\n"); + return 0; + } + md_setup_args[ent].level = level; + md_setup_args[ent].chunk = 1 << (factor+12); + if (level == LEVEL_LINEAR) + pername = "linear"; + else + pername = "raid0"; + break; + } + fallthrough; + case 1: /* the first device is numeric */ + str = str1; + fallthrough; + case 0: + md_setup_args[ent].level = LEVEL_NONE; + pername="super-block"; + } + + printk(KERN_INFO "md: Will configure md%d (%s) from %s, below.\n", + minor, pername, str); + md_setup_args[ent].device_names = str; + md_setup_args[ent].partitioned = partitioned; + md_setup_args[ent].minor = minor; + + return 1; +} + +static void __init md_setup_drive(struct md_setup_args *args) +{ + char *devname = args->device_names; + dev_t devices[MD_SB_DISKS + 1], mdev; + struct mdu_array_info_s ainfo = { }; + struct mddev *mddev; + int err = 0, i; + char name[16]; + + if (args->partitioned) { + mdev = MKDEV(mdp_major, args->minor << MdpMinorShift); + sprintf(name, "md_d%d", args->minor); + } else { + mdev = MKDEV(MD_MAJOR, args->minor); + sprintf(name, "md%d", args->minor); + } + + for (i = 0; i < MD_SB_DISKS && devname != NULL; i++) { + struct kstat stat; + char *p; + char comp_name[64]; + dev_t dev; + + p = strchr(devname, ','); + if (p) + *p++ = 0; + + dev = name_to_dev_t(devname); + if (strncmp(devname, "/dev/", 5) == 0) + devname += 5; + snprintf(comp_name, 63, "/dev/%s", devname); + if (init_stat(comp_name, &stat, 0) == 0 && S_ISBLK(stat.mode)) + dev = new_decode_dev(stat.rdev); + if (!dev) { + pr_warn("md: Unknown device name: %s\n", devname); + break; + } + + devices[i] = dev; + devname = p; + } + devices[i] = 0; + + if (!i) + return; + + pr_info("md: Loading %s: %s\n", name, args->device_names); + + mddev = md_alloc(mdev, name); + if (IS_ERR(mddev)) { + pr_err("md: md_alloc failed - cannot start array %s\n", name); + return; + } + + err = mddev_lock(mddev); + if (err) { + pr_err("md: failed to lock array %s\n", name); + goto out_mddev_put; + } + + if (!list_empty(&mddev->disks) || mddev->raid_disks) { + pr_warn("md: Ignoring %s, already autodetected. (Use raid=noautodetect)\n", + name); + goto out_unlock; + } + + if (args->level != LEVEL_NONE) { + /* non-persistent */ + ainfo.level = args->level; + ainfo.md_minor = args->minor; + ainfo.not_persistent = 1; + ainfo.state = (1 << MD_SB_CLEAN); + ainfo.chunk_size = args->chunk; + while (devices[ainfo.raid_disks]) + ainfo.raid_disks++; + } + + err = md_set_array_info(mddev, &ainfo); + + for (i = 0; i <= MD_SB_DISKS && devices[i]; i++) { + struct mdu_disk_info_s dinfo = { + .major = MAJOR(devices[i]), + .minor = MINOR(devices[i]), + }; + + if (args->level != LEVEL_NONE) { + dinfo.number = i; + dinfo.raid_disk = i; + dinfo.state = + (1 << MD_DISK_ACTIVE) | (1 << MD_DISK_SYNC); + } + + md_add_new_disk(mddev, &dinfo); + } + + if (!err) + err = do_md_run(mddev); + if (err) + pr_warn("md: starting %s failed\n", name); +out_unlock: + mddev_unlock(mddev); +out_mddev_put: + mddev_put(mddev); +} + +static int __init raid_setup(char *str) +{ + int len, pos; + + len = strlen(str) + 1; + pos = 0; + + while (pos < len) { + char *comma = strchr(str+pos, ','); + int wlen; + if (comma) + wlen = (comma-str)-pos; + else wlen = (len-1)-pos; + + if (!strncmp(str, "noautodetect", wlen)) + raid_noautodetect = 1; + if (!strncmp(str, "autodetect", wlen)) + raid_noautodetect = 0; + if (strncmp(str, "partitionable", wlen)==0) + raid_autopart = 1; + if (strncmp(str, "part", wlen)==0) + raid_autopart = 1; + pos += wlen+1; + } + return 1; +} + +__setup("raid=", raid_setup); +__setup("md=", md_setup); + +static void __init autodetect_raid(void) +{ + /* + * Since we don't want to detect and use half a raid array, we need to + * wait for the known devices to complete their probing + */ + printk(KERN_INFO "md: Waiting for all devices to be available before autodetect\n"); + printk(KERN_INFO "md: If you don't use raid, use raid=noautodetect\n"); + + wait_for_device_probe(); + md_autostart_arrays(raid_autopart); +} + +void __init md_run_setup(void) +{ + int ent; + + if (raid_noautodetect) + printk(KERN_INFO "md: Skipping autodetection of RAID arrays. (raid=autodetect will force)\n"); + else + autodetect_raid(); + + for (ent = 0; ent < md_setup_ents; ent++) + md_setup_drive(&md_setup_args[ent]); +} -- cgit v1.2.3