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(). ... --- crypto/hmac.c | 263 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 263 insertions(+) create mode 100644 crypto/hmac.c (limited to 'crypto/hmac.c') diff --git a/crypto/hmac.c b/crypto/hmac.c new file mode 100644 index 000000000..3610ff0b6 --- /dev/null +++ b/crypto/hmac.c @@ -0,0 +1,263 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Cryptographic API. + * + * HMAC: Keyed-Hashing for Message Authentication (RFC2104). + * + * Copyright (c) 2002 James Morris + * Copyright (c) 2006 Herbert Xu + * + * The HMAC implementation is derived from USAGI. + * Copyright (c) 2002 Kazunori Miyazawa / USAGI + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct hmac_ctx { + struct crypto_shash *hash; +}; + +static inline void *align_ptr(void *p, unsigned int align) +{ + return (void *)ALIGN((unsigned long)p, align); +} + +static inline struct hmac_ctx *hmac_ctx(struct crypto_shash *tfm) +{ + return align_ptr(crypto_shash_ctx_aligned(tfm) + + crypto_shash_statesize(tfm) * 2, + crypto_tfm_ctx_alignment()); +} + +static int hmac_setkey(struct crypto_shash *parent, + const u8 *inkey, unsigned int keylen) +{ + int bs = crypto_shash_blocksize(parent); + int ds = crypto_shash_digestsize(parent); + int ss = crypto_shash_statesize(parent); + char *ipad = crypto_shash_ctx_aligned(parent); + char *opad = ipad + ss; + struct hmac_ctx *ctx = align_ptr(opad + ss, + crypto_tfm_ctx_alignment()); + struct crypto_shash *hash = ctx->hash; + SHASH_DESC_ON_STACK(shash, hash); + unsigned int i; + + if (fips_enabled && (keylen < 112 / 8)) + return -EINVAL; + + shash->tfm = hash; + + if (keylen > bs) { + int err; + + err = crypto_shash_digest(shash, inkey, keylen, ipad); + if (err) + return err; + + keylen = ds; + } else + memcpy(ipad, inkey, keylen); + + memset(ipad + keylen, 0, bs - keylen); + memcpy(opad, ipad, bs); + + for (i = 0; i < bs; i++) { + ipad[i] ^= HMAC_IPAD_VALUE; + opad[i] ^= HMAC_OPAD_VALUE; + } + + return crypto_shash_init(shash) ?: + crypto_shash_update(shash, ipad, bs) ?: + crypto_shash_export(shash, ipad) ?: + crypto_shash_init(shash) ?: + crypto_shash_update(shash, opad, bs) ?: + crypto_shash_export(shash, opad); +} + +static int hmac_export(struct shash_desc *pdesc, void *out) +{ + struct shash_desc *desc = shash_desc_ctx(pdesc); + + return crypto_shash_export(desc, out); +} + +static int hmac_import(struct shash_desc *pdesc, const void *in) +{ + struct shash_desc *desc = shash_desc_ctx(pdesc); + struct hmac_ctx *ctx = hmac_ctx(pdesc->tfm); + + desc->tfm = ctx->hash; + + return crypto_shash_import(desc, in); +} + +static int hmac_init(struct shash_desc *pdesc) +{ + return hmac_import(pdesc, crypto_shash_ctx_aligned(pdesc->tfm)); +} + +static int hmac_update(struct shash_desc *pdesc, + const u8 *data, unsigned int nbytes) +{ + struct shash_desc *desc = shash_desc_ctx(pdesc); + + return crypto_shash_update(desc, data, nbytes); +} + +static int hmac_final(struct shash_desc *pdesc, u8 *out) +{ + struct crypto_shash *parent = pdesc->tfm; + int ds = crypto_shash_digestsize(parent); + int ss = crypto_shash_statesize(parent); + char *opad = crypto_shash_ctx_aligned(parent) + ss; + struct shash_desc *desc = shash_desc_ctx(pdesc); + + return crypto_shash_final(desc, out) ?: + crypto_shash_import(desc, opad) ?: + crypto_shash_finup(desc, out, ds, out); +} + +static int hmac_finup(struct shash_desc *pdesc, const u8 *data, + unsigned int nbytes, u8 *out) +{ + + struct crypto_shash *parent = pdesc->tfm; + int ds = crypto_shash_digestsize(parent); + int ss = crypto_shash_statesize(parent); + char *opad = crypto_shash_ctx_aligned(parent) + ss; + struct shash_desc *desc = shash_desc_ctx(pdesc); + + return crypto_shash_finup(desc, data, nbytes, out) ?: + crypto_shash_import(desc, opad) ?: + crypto_shash_finup(desc, out, ds, out); +} + +static int hmac_init_tfm(struct crypto_shash *parent) +{ + struct crypto_shash *hash; + struct shash_instance *inst = shash_alg_instance(parent); + struct crypto_shash_spawn *spawn = shash_instance_ctx(inst); + struct hmac_ctx *ctx = hmac_ctx(parent); + + hash = crypto_spawn_shash(spawn); + if (IS_ERR(hash)) + return PTR_ERR(hash); + + parent->descsize = sizeof(struct shash_desc) + + crypto_shash_descsize(hash); + + ctx->hash = hash; + return 0; +} + +static void hmac_exit_tfm(struct crypto_shash *parent) +{ + struct hmac_ctx *ctx = hmac_ctx(parent); + crypto_free_shash(ctx->hash); +} + +static int hmac_create(struct crypto_template *tmpl, struct rtattr **tb) +{ + struct shash_instance *inst; + struct crypto_shash_spawn *spawn; + struct crypto_alg *alg; + struct shash_alg *salg; + u32 mask; + int err; + int ds; + int ss; + + err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_SHASH, &mask); + if (err) + return err; + + inst = kzalloc(sizeof(*inst) + sizeof(*spawn), GFP_KERNEL); + if (!inst) + return -ENOMEM; + spawn = shash_instance_ctx(inst); + + err = crypto_grab_shash(spawn, shash_crypto_instance(inst), + crypto_attr_alg_name(tb[1]), 0, mask); + if (err) + goto err_free_inst; + salg = crypto_spawn_shash_alg(spawn); + alg = &salg->base; + + /* The underlying hash algorithm must not require a key */ + err = -EINVAL; + if (crypto_shash_alg_needs_key(salg)) + goto err_free_inst; + + ds = salg->digestsize; + ss = salg->statesize; + if (ds > alg->cra_blocksize || + ss < alg->cra_blocksize) + goto err_free_inst; + + err = crypto_inst_setname(shash_crypto_instance(inst), tmpl->name, alg); + if (err) + goto err_free_inst; + + inst->alg.base.cra_priority = alg->cra_priority; + inst->alg.base.cra_blocksize = alg->cra_blocksize; + inst->alg.base.cra_alignmask = alg->cra_alignmask; + + ss = ALIGN(ss, alg->cra_alignmask + 1); + inst->alg.digestsize = ds; + inst->alg.statesize = ss; + + inst->alg.base.cra_ctxsize = sizeof(struct hmac_ctx) + + ALIGN(ss * 2, crypto_tfm_ctx_alignment()); + + inst->alg.init = hmac_init; + inst->alg.update = hmac_update; + inst->alg.final = hmac_final; + inst->alg.finup = hmac_finup; + inst->alg.export = hmac_export; + inst->alg.import = hmac_import; + inst->alg.setkey = hmac_setkey; + inst->alg.init_tfm = hmac_init_tfm; + inst->alg.exit_tfm = hmac_exit_tfm; + + inst->free = shash_free_singlespawn_instance; + + err = shash_register_instance(tmpl, inst); + if (err) { +err_free_inst: + shash_free_singlespawn_instance(inst); + } + return err; +} + +static struct crypto_template hmac_tmpl = { + .name = "hmac", + .create = hmac_create, + .module = THIS_MODULE, +}; + +static int __init hmac_module_init(void) +{ + return crypto_register_template(&hmac_tmpl); +} + +static void __exit hmac_module_exit(void) +{ + crypto_unregister_template(&hmac_tmpl); +} + +subsys_initcall(hmac_module_init); +module_exit(hmac_module_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("HMAC hash algorithm"); +MODULE_ALIAS_CRYPTO("hmac"); -- cgit v1.2.3