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/mtd/parsers/bcm47xxpart.c | 317 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 317 insertions(+) create mode 100644 drivers/mtd/parsers/bcm47xxpart.c (limited to 'drivers/mtd/parsers/bcm47xxpart.c') diff --git a/drivers/mtd/parsers/bcm47xxpart.c b/drivers/mtd/parsers/bcm47xxpart.c new file mode 100644 index 000000000..13daf9bff --- /dev/null +++ b/drivers/mtd/parsers/bcm47xxpart.c @@ -0,0 +1,317 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * BCM47XX MTD partitioning + * + * Copyright © 2012 Rafał Miłecki + */ + +#include +#include +#include +#include +#include +#include + +#include + +/* + * NAND flash on Netgear R6250 was verified to contain 15 partitions. + * This will result in allocating too big array for some old devices, but the + * memory will be freed soon anyway (see mtd_device_parse_register). + */ +#define BCM47XXPART_MAX_PARTS 20 + +/* + * Amount of bytes we read when analyzing each block of flash memory. + * Set it big enough to allow detecting partition and reading important data. + */ +#define BCM47XXPART_BYTES_TO_READ 0x4e8 + +/* Magics */ +#define BOARD_DATA_MAGIC 0x5246504D /* MPFR */ +#define BOARD_DATA_MAGIC2 0xBD0D0BBD +#define CFE_MAGIC 0x43464531 /* 1EFC */ +#define FACTORY_MAGIC 0x59544346 /* FCTY */ +#define NVRAM_HEADER 0x48534C46 /* FLSH */ +#define POT_MAGIC1 0x54544f50 /* POTT */ +#define POT_MAGIC2 0x504f /* OP */ +#define ML_MAGIC1 0x39685a42 +#define ML_MAGIC2 0x26594131 +#define TRX_MAGIC 0x30524448 +#define SHSQ_MAGIC 0x71736873 /* shsq (weird ZTE H218N endianness) */ + +static const char * const trx_types[] = { "trx", NULL }; + +struct trx_header { + uint32_t magic; + uint32_t length; + uint32_t crc32; + uint16_t flags; + uint16_t version; + uint32_t offset[3]; +} __packed; + +static void bcm47xxpart_add_part(struct mtd_partition *part, const char *name, + u64 offset, uint32_t mask_flags) +{ + part->name = name; + part->offset = offset; + part->mask_flags = mask_flags; +} + +/** + * bcm47xxpart_bootpartition - gets index of TRX partition used by bootloader + * + * Some devices may have more than one TRX partition. In such case one of them + * is the main one and another a failsafe one. Bootloader may fallback to the + * failsafe firmware if it detects corruption of the main image. + * + * This function provides info about currently used TRX partition. It's the one + * containing kernel started by the bootloader. + */ +static int bcm47xxpart_bootpartition(void) +{ + char buf[4]; + int bootpartition; + + /* Check CFE environment variable */ + if (bcm47xx_nvram_getenv("bootpartition", buf, sizeof(buf)) > 0) { + if (!kstrtoint(buf, 0, &bootpartition)) + return bootpartition; + } + + return 0; +} + +static int bcm47xxpart_parse(struct mtd_info *master, + const struct mtd_partition **pparts, + struct mtd_part_parser_data *data) +{ + struct mtd_partition *parts; + uint8_t i, curr_part = 0; + uint32_t *buf; + size_t bytes_read; + uint32_t offset; + uint32_t blocksize = master->erasesize; + int trx_parts[2]; /* Array with indexes of TRX partitions */ + int trx_num = 0; /* Number of found TRX partitions */ + int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, }; + int err; + + /* + * Some really old flashes (like AT45DB*) had smaller erasesize-s, but + * partitions were aligned to at least 0x1000 anyway. + */ + if (blocksize < 0x1000) + blocksize = 0x1000; + + /* Alloc */ + parts = kcalloc(BCM47XXPART_MAX_PARTS, sizeof(struct mtd_partition), + GFP_KERNEL); + if (!parts) + return -ENOMEM; + + buf = kzalloc(BCM47XXPART_BYTES_TO_READ, GFP_KERNEL); + if (!buf) { + kfree(parts); + return -ENOMEM; + } + + /* Parse block by block looking for magics */ + for (offset = 0; offset <= master->size - blocksize; + offset += blocksize) { + /* Nothing more in higher memory on BCM47XX (MIPS) */ + if (IS_ENABLED(CONFIG_BCM47XX) && offset >= 0x2000000) + break; + + if (curr_part >= BCM47XXPART_MAX_PARTS) { + pr_warn("Reached maximum number of partitions, scanning stopped!\n"); + break; + } + + /* Read beginning of the block */ + err = mtd_read(master, offset, BCM47XXPART_BYTES_TO_READ, + &bytes_read, (uint8_t *)buf); + if (err && !mtd_is_bitflip(err)) { + pr_err("mtd_read error while parsing (offset: 0x%X): %d\n", + offset, err); + continue; + } + + /* Magic or small NVRAM at 0x400 */ + if ((buf[0x4e0 / 4] == CFE_MAGIC && buf[0x4e4 / 4] == CFE_MAGIC) || + (buf[0x400 / 4] == NVRAM_HEADER)) { + bcm47xxpart_add_part(&parts[curr_part++], "boot", + offset, MTD_WRITEABLE); + continue; + } + + /* + * board_data starts with board_id which differs across boards, + * but we can use 'MPFR' (hopefully) magic at 0x100 + */ + if (buf[0x100 / 4] == BOARD_DATA_MAGIC) { + bcm47xxpart_add_part(&parts[curr_part++], "board_data", + offset, MTD_WRITEABLE); + continue; + } + + /* Found on Huawei E970 */ + if (buf[0x000 / 4] == FACTORY_MAGIC) { + bcm47xxpart_add_part(&parts[curr_part++], "factory", + offset, MTD_WRITEABLE); + continue; + } + + /* POT(TOP) */ + if (buf[0x000 / 4] == POT_MAGIC1 && + (buf[0x004 / 4] & 0xFFFF) == POT_MAGIC2) { + bcm47xxpart_add_part(&parts[curr_part++], "POT", offset, + MTD_WRITEABLE); + continue; + } + + /* ML */ + if (buf[0x010 / 4] == ML_MAGIC1 && + buf[0x014 / 4] == ML_MAGIC2) { + bcm47xxpart_add_part(&parts[curr_part++], "ML", offset, + MTD_WRITEABLE); + continue; + } + + /* TRX */ + if (buf[0x000 / 4] == TRX_MAGIC) { + struct trx_header *trx; + uint32_t last_subpart; + uint32_t trx_size; + + if (trx_num >= ARRAY_SIZE(trx_parts)) + pr_warn("No enough space to store another TRX found at 0x%X\n", + offset); + else + trx_parts[trx_num++] = curr_part; + bcm47xxpart_add_part(&parts[curr_part++], "firmware", + offset, 0); + + /* + * Try to find TRX size. The "length" field isn't fully + * reliable as it could be decreased to make CRC32 cover + * only part of TRX data. It's commonly used as checksum + * can't cover e.g. ever-changing rootfs partition. + * Use offsets as helpers for assuming min TRX size. + */ + trx = (struct trx_header *)buf; + last_subpart = max3(trx->offset[0], trx->offset[1], + trx->offset[2]); + trx_size = max(trx->length, last_subpart + blocksize); + + /* + * Skip the TRX data. Decrease offset by block size as + * the next loop iteration will increase it. + */ + offset += roundup(trx_size, blocksize) - blocksize; + continue; + } + + /* Squashfs on devices not using TRX */ + if (le32_to_cpu(buf[0x000 / 4]) == SQUASHFS_MAGIC || + buf[0x000 / 4] == SHSQ_MAGIC) { + bcm47xxpart_add_part(&parts[curr_part++], "rootfs", + offset, 0); + continue; + } + + /* + * New (ARM?) devices may have NVRAM in some middle block. Last + * block will be checked later, so skip it. + */ + if (offset != master->size - blocksize && + buf[0x000 / 4] == NVRAM_HEADER) { + bcm47xxpart_add_part(&parts[curr_part++], "nvram", + offset, 0); + continue; + } + + /* Read middle of the block */ + err = mtd_read(master, offset + (blocksize / 2), 0x4, &bytes_read, + (uint8_t *)buf); + if (err && !mtd_is_bitflip(err)) { + pr_err("mtd_read error while parsing (offset: 0x%X): %d\n", + offset + (blocksize / 2), err); + continue; + } + + /* Some devices (ex. WNDR3700v3) don't have a standard 'MPFR' */ + if (buf[0x000 / 4] == BOARD_DATA_MAGIC2) { + bcm47xxpart_add_part(&parts[curr_part++], "board_data", + offset, MTD_WRITEABLE); + continue; + } + } + + /* Look for NVRAM at the end of the last block. */ + for (i = 0; i < ARRAY_SIZE(possible_nvram_sizes); i++) { + if (curr_part >= BCM47XXPART_MAX_PARTS) { + pr_warn("Reached maximum number of partitions, scanning stopped!\n"); + break; + } + + offset = master->size - possible_nvram_sizes[i]; + err = mtd_read(master, offset, 0x4, &bytes_read, + (uint8_t *)buf); + if (err && !mtd_is_bitflip(err)) { + pr_err("mtd_read error while reading (offset 0x%X): %d\n", + offset, err); + continue; + } + + /* Standard NVRAM */ + if (buf[0] == NVRAM_HEADER) { + bcm47xxpart_add_part(&parts[curr_part++], "nvram", + master->size - blocksize, 0); + break; + } + } + + kfree(buf); + + /* + * Assume that partitions end at the beginning of the one they are + * followed by. + */ + for (i = 0; i < curr_part; i++) { + u64 next_part_offset = (i < curr_part - 1) ? + parts[i + 1].offset : master->size; + + parts[i].size = next_part_offset - parts[i].offset; + } + + /* If there was TRX parse it now */ + for (i = 0; i < trx_num; i++) { + struct mtd_partition *trx = &parts[trx_parts[i]]; + + if (i == bcm47xxpart_bootpartition()) + trx->types = trx_types; + else + trx->name = "failsafe"; + } + + *pparts = parts; + return curr_part; +}; + +static const struct of_device_id bcm47xxpart_of_match_table[] = { + { .compatible = "brcm,bcm947xx-cfe-partitions" }, + {}, +}; +MODULE_DEVICE_TABLE(of, bcm47xxpart_of_match_table); + +static struct mtd_part_parser bcm47xxpart_mtd_parser = { + .parse_fn = bcm47xxpart_parse, + .name = "bcm47xxpart", + .of_match_table = bcm47xxpart_of_match_table, +}; +module_mtd_part_parser(bcm47xxpart_mtd_parser); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("MTD partitioning for BCM47XX flash memories"); -- cgit v1.2.3