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/firmware/efi/libstub/file.c | 309 ++++++++++++++++++++++++++++++++++++ 1 file changed, 309 insertions(+) create mode 100644 drivers/firmware/efi/libstub/file.c (limited to 'drivers/firmware/efi/libstub/file.c') diff --git a/drivers/firmware/efi/libstub/file.c b/drivers/firmware/efi/libstub/file.c new file mode 100644 index 000000000..d6a025df0 --- /dev/null +++ b/drivers/firmware/efi/libstub/file.c @@ -0,0 +1,309 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Helper functions used by the EFI stub on multiple + * architectures. This should be #included by the EFI stub + * implementation files. + * + * Copyright 2011 Intel Corporation; author Matt Fleming + */ + +#include +#include + +#include "efistub.h" + +#define MAX_FILENAME_SIZE 256 + +/* + * Some firmware implementations have problems reading files in one go. + * A read chunk size of 1MB seems to work for most platforms. + * + * Unfortunately, reading files in chunks triggers *other* bugs on some + * platforms, so we provide a way to disable this workaround, which can + * be done by passing "efi=nochunk" on the EFI boot stub command line. + * + * If you experience issues with initrd images being corrupt it's worth + * trying efi=nochunk, but chunking is enabled by default on x86 because + * there are far more machines that require the workaround than those that + * break with it enabled. + */ +#define EFI_READ_CHUNK_SIZE SZ_1M + +struct finfo { + efi_file_info_t info; + efi_char16_t filename[MAX_FILENAME_SIZE]; +}; + +static efi_status_t efi_open_file(efi_file_protocol_t *volume, + struct finfo *fi, + efi_file_protocol_t **handle, + unsigned long *file_size) +{ + efi_guid_t info_guid = EFI_FILE_INFO_ID; + efi_file_protocol_t *fh; + unsigned long info_sz; + efi_status_t status; + efi_char16_t *c; + + /* Replace UNIX dir separators with EFI standard ones */ + for (c = fi->filename; *c != L'\0'; c++) { + if (*c == L'/') + *c = L'\\'; + } + + status = efi_call_proto(volume, open, &fh, fi->filename, + EFI_FILE_MODE_READ, 0); + if (status != EFI_SUCCESS) { + efi_err("Failed to open file: %ls\n", fi->filename); + return status; + } + + info_sz = sizeof(struct finfo); + status = efi_call_proto(fh, get_info, &info_guid, &info_sz, fi); + if (status != EFI_SUCCESS) { + efi_err("Failed to get file info\n"); + efi_call_proto(fh, close); + return status; + } + + *handle = fh; + *file_size = fi->info.file_size; + return EFI_SUCCESS; +} + +static efi_status_t efi_open_volume(efi_loaded_image_t *image, + efi_file_protocol_t **fh) +{ + efi_guid_t fs_proto = EFI_FILE_SYSTEM_GUID; + efi_simple_file_system_protocol_t *io; + efi_status_t status; + + status = efi_bs_call(handle_protocol, efi_table_attr(image, device_handle), + &fs_proto, (void **)&io); + if (status != EFI_SUCCESS) { + efi_err("Failed to handle fs_proto\n"); + return status; + } + + status = efi_call_proto(io, open_volume, fh); + if (status != EFI_SUCCESS) + efi_err("Failed to open volume\n"); + + return status; +} + +static int find_file_option(const efi_char16_t *cmdline, int cmdline_len, + const efi_char16_t *prefix, int prefix_size, + efi_char16_t *result, int result_len) +{ + int prefix_len = prefix_size / 2; + bool found = false; + int i; + + for (i = prefix_len; i < cmdline_len; i++) { + if (!memcmp(&cmdline[i - prefix_len], prefix, prefix_size)) { + found = true; + break; + } + } + + if (!found) + return 0; + + /* Skip any leading slashes */ + while (i < cmdline_len && (cmdline[i] == L'/' || cmdline[i] == L'\\')) + i++; + + while (--result_len > 0 && i < cmdline_len) { + efi_char16_t c = cmdline[i++]; + + if (c == L'\0' || c == L'\n' || c == L' ') + break; + *result++ = c; + } + *result = L'\0'; + return i; +} + +static efi_status_t efi_open_device_path(efi_file_protocol_t **volume, + struct finfo *fi) +{ + efi_guid_t text_to_dp_guid = EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL_GUID; + static efi_device_path_from_text_protocol_t *text_to_dp = NULL; + efi_guid_t fs_proto = EFI_FILE_SYSTEM_GUID; + efi_device_path_protocol_t *initrd_dp; + efi_simple_file_system_protocol_t *io; + struct efi_file_path_dev_path *fpath; + efi_handle_t handle; + efi_status_t status; + + /* See if the text to device path protocol exists */ + if (!text_to_dp && + efi_bs_call(locate_protocol, &text_to_dp_guid, NULL, + (void **)&text_to_dp) != EFI_SUCCESS) + return EFI_UNSUPPORTED; + + + /* Convert the filename wide string into a device path */ + initrd_dp = efi_fn_call(text_to_dp, convert_text_to_device_path, + fi->filename); + + /* Check whether the device path in question implements simple FS */ + if ((efi_bs_call(locate_device_path, &fs_proto, &initrd_dp, &handle) ?: + efi_bs_call(handle_protocol, handle, &fs_proto, (void **)&io)) + != EFI_SUCCESS) + return EFI_NOT_FOUND; + + /* Check whether the remaining device path is a file device path */ + if (initrd_dp->type != EFI_DEV_MEDIA || + initrd_dp->sub_type != EFI_DEV_MEDIA_FILE) { + efi_warn("Unexpected device path node type: (%x, %x)\n", + initrd_dp->type, initrd_dp->sub_type); + return EFI_LOAD_ERROR; + } + + /* Copy the remaining file path into the fi structure */ + fpath = (struct efi_file_path_dev_path *)initrd_dp; + memcpy(fi->filename, fpath->filename, + min(sizeof(fi->filename), + fpath->header.length - sizeof(fpath->header))); + + status = efi_call_proto(io, open_volume, volume); + if (status != EFI_SUCCESS) + efi_err("Failed to open volume\n"); + + return status; +} + +/* + * Check the cmdline for a LILO-style file= arguments. + * + * We only support loading a file from the same filesystem as + * the kernel image. + */ +efi_status_t handle_cmdline_files(efi_loaded_image_t *image, + const efi_char16_t *optstr, + int optstr_size, + unsigned long soft_limit, + unsigned long hard_limit, + unsigned long *load_addr, + unsigned long *load_size) +{ + const efi_char16_t *cmdline = efi_table_attr(image, load_options); + u32 cmdline_len = efi_table_attr(image, load_options_size); + unsigned long efi_chunk_size = ULONG_MAX; + efi_file_protocol_t *volume = NULL; + efi_file_protocol_t *file; + unsigned long alloc_addr; + unsigned long alloc_size; + efi_status_t status; + int offset; + + if (!load_addr || !load_size) + return EFI_INVALID_PARAMETER; + + efi_apply_loadoptions_quirk((const void **)&cmdline, &cmdline_len); + cmdline_len /= sizeof(*cmdline); + + if (IS_ENABLED(CONFIG_X86) && !efi_nochunk) + efi_chunk_size = EFI_READ_CHUNK_SIZE; + + alloc_addr = alloc_size = 0; + do { + struct finfo fi; + unsigned long size; + void *addr; + + offset = find_file_option(cmdline, cmdline_len, + optstr, optstr_size, + fi.filename, ARRAY_SIZE(fi.filename)); + + if (!offset) + break; + + cmdline += offset; + cmdline_len -= offset; + + status = efi_open_device_path(&volume, &fi); + if (status == EFI_UNSUPPORTED || status == EFI_NOT_FOUND) + /* try the volume that holds the kernel itself */ + status = efi_open_volume(image, &volume); + + if (status != EFI_SUCCESS) + goto err_free_alloc; + + status = efi_open_file(volume, &fi, &file, &size); + if (status != EFI_SUCCESS) + goto err_close_volume; + + /* + * Check whether the existing allocation can contain the next + * file. This condition will also trigger naturally during the + * first (and typically only) iteration of the loop, given that + * alloc_size == 0 in that case. + */ + if (round_up(alloc_size + size, EFI_ALLOC_ALIGN) > + round_up(alloc_size, EFI_ALLOC_ALIGN)) { + unsigned long old_addr = alloc_addr; + + status = EFI_OUT_OF_RESOURCES; + if (soft_limit < hard_limit) + status = efi_allocate_pages(alloc_size + size, + &alloc_addr, + soft_limit); + if (status == EFI_OUT_OF_RESOURCES) + status = efi_allocate_pages(alloc_size + size, + &alloc_addr, + hard_limit); + if (status != EFI_SUCCESS) { + efi_err("Failed to allocate memory for files\n"); + goto err_close_file; + } + + if (old_addr != 0) { + /* + * This is not the first time we've gone + * around this loop, and so we are loading + * multiple files that need to be concatenated + * and returned in a single buffer. + */ + memcpy((void *)alloc_addr, (void *)old_addr, alloc_size); + efi_free(alloc_size, old_addr); + } + } + + addr = (void *)alloc_addr + alloc_size; + alloc_size += size; + + while (size) { + unsigned long chunksize = min(size, efi_chunk_size); + + status = efi_call_proto(file, read, &chunksize, addr); + if (status != EFI_SUCCESS) { + efi_err("Failed to read file\n"); + goto err_close_file; + } + addr += chunksize; + size -= chunksize; + } + efi_call_proto(file, close); + efi_call_proto(volume, close); + } while (offset > 0); + + *load_addr = alloc_addr; + *load_size = alloc_size; + + if (*load_size == 0) + return EFI_NOT_READY; + return EFI_SUCCESS; + +err_close_file: + efi_call_proto(file, close); + +err_close_volume: + efi_call_proto(volume, close); + +err_free_alloc: + efi_free(alloc_size, alloc_addr); + return status; +} -- cgit v1.2.3