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/crypto/ccp/ccp-crypto-main.c | 423 +++++++++++++++++++++++++++++++++++ 1 file changed, 423 insertions(+) create mode 100644 drivers/crypto/ccp/ccp-crypto-main.c (limited to 'drivers/crypto/ccp/ccp-crypto-main.c') diff --git a/drivers/crypto/ccp/ccp-crypto-main.c b/drivers/crypto/ccp/ccp-crypto-main.c new file mode 100644 index 000000000..ecd58b38c --- /dev/null +++ b/drivers/crypto/ccp/ccp-crypto-main.c @@ -0,0 +1,423 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * AMD Cryptographic Coprocessor (CCP) crypto API support + * + * Copyright (C) 2013,2017 Advanced Micro Devices, Inc. + * + * Author: Tom Lendacky + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ccp-crypto.h" + +MODULE_AUTHOR("Tom Lendacky "); +MODULE_LICENSE("GPL"); +MODULE_VERSION("1.0.0"); +MODULE_DESCRIPTION("AMD Cryptographic Coprocessor crypto API support"); + +static unsigned int aes_disable; +module_param(aes_disable, uint, 0444); +MODULE_PARM_DESC(aes_disable, "Disable use of AES - any non-zero value"); + +static unsigned int sha_disable; +module_param(sha_disable, uint, 0444); +MODULE_PARM_DESC(sha_disable, "Disable use of SHA - any non-zero value"); + +static unsigned int des3_disable; +module_param(des3_disable, uint, 0444); +MODULE_PARM_DESC(des3_disable, "Disable use of 3DES - any non-zero value"); + +static unsigned int rsa_disable; +module_param(rsa_disable, uint, 0444); +MODULE_PARM_DESC(rsa_disable, "Disable use of RSA - any non-zero value"); + +/* List heads for the supported algorithms */ +static LIST_HEAD(hash_algs); +static LIST_HEAD(skcipher_algs); +static LIST_HEAD(aead_algs); +static LIST_HEAD(akcipher_algs); + +/* For any tfm, requests for that tfm must be returned on the order + * received. With multiple queues available, the CCP can process more + * than one cmd at a time. Therefore we must maintain a cmd list to insure + * the proper ordering of requests on a given tfm. + */ +struct ccp_crypto_queue { + struct list_head cmds; + struct list_head *backlog; + unsigned int cmd_count; +}; + +#define CCP_CRYPTO_MAX_QLEN 100 + +static struct ccp_crypto_queue req_queue; +static DEFINE_SPINLOCK(req_queue_lock); + +struct ccp_crypto_cmd { + struct list_head entry; + + struct ccp_cmd *cmd; + + /* Save the crypto_tfm and crypto_async_request addresses + * separately to avoid any reference to a possibly invalid + * crypto_async_request structure after invoking the request + * callback + */ + struct crypto_async_request *req; + struct crypto_tfm *tfm; + + /* Used for held command processing to determine state */ + int ret; +}; + +static inline bool ccp_crypto_success(int err) +{ + if (err && (err != -EINPROGRESS) && (err != -EBUSY)) + return false; + + return true; +} + +static struct ccp_crypto_cmd *ccp_crypto_cmd_complete( + struct ccp_crypto_cmd *crypto_cmd, struct ccp_crypto_cmd **backlog) +{ + struct ccp_crypto_cmd *held = NULL, *tmp; + unsigned long flags; + + *backlog = NULL; + + spin_lock_irqsave(&req_queue_lock, flags); + + /* Held cmds will be after the current cmd in the queue so start + * searching for a cmd with a matching tfm for submission. + */ + tmp = crypto_cmd; + list_for_each_entry_continue(tmp, &req_queue.cmds, entry) { + if (crypto_cmd->tfm != tmp->tfm) + continue; + held = tmp; + break; + } + + /* Process the backlog: + * Because cmds can be executed from any point in the cmd list + * special precautions have to be taken when handling the backlog. + */ + if (req_queue.backlog != &req_queue.cmds) { + /* Skip over this cmd if it is the next backlog cmd */ + if (req_queue.backlog == &crypto_cmd->entry) + req_queue.backlog = crypto_cmd->entry.next; + + *backlog = container_of(req_queue.backlog, + struct ccp_crypto_cmd, entry); + req_queue.backlog = req_queue.backlog->next; + + /* Skip over this cmd if it is now the next backlog cmd */ + if (req_queue.backlog == &crypto_cmd->entry) + req_queue.backlog = crypto_cmd->entry.next; + } + + /* Remove the cmd entry from the list of cmds */ + req_queue.cmd_count--; + list_del(&crypto_cmd->entry); + + spin_unlock_irqrestore(&req_queue_lock, flags); + + return held; +} + +static void ccp_crypto_complete(void *data, int err) +{ + struct ccp_crypto_cmd *crypto_cmd = data; + struct ccp_crypto_cmd *held, *next, *backlog; + struct crypto_async_request *req = crypto_cmd->req; + struct ccp_ctx *ctx = crypto_tfm_ctx_dma(req->tfm); + int ret; + + if (err == -EINPROGRESS) { + /* Only propagate the -EINPROGRESS if necessary */ + if (crypto_cmd->ret == -EBUSY) { + crypto_cmd->ret = -EINPROGRESS; + crypto_request_complete(req, -EINPROGRESS); + } + + return; + } + + /* Operation has completed - update the queue before invoking + * the completion callbacks and retrieve the next cmd (cmd with + * a matching tfm) that can be submitted to the CCP. + */ + held = ccp_crypto_cmd_complete(crypto_cmd, &backlog); + if (backlog) { + backlog->ret = -EINPROGRESS; + crypto_request_complete(backlog->req, -EINPROGRESS); + } + + /* Transition the state from -EBUSY to -EINPROGRESS first */ + if (crypto_cmd->ret == -EBUSY) + crypto_request_complete(req, -EINPROGRESS); + + /* Completion callbacks */ + ret = err; + if (ctx->complete) + ret = ctx->complete(req, ret); + crypto_request_complete(req, ret); + + /* Submit the next cmd */ + while (held) { + /* Since we have already queued the cmd, we must indicate that + * we can backlog so as not to "lose" this request. + */ + held->cmd->flags |= CCP_CMD_MAY_BACKLOG; + ret = ccp_enqueue_cmd(held->cmd); + if (ccp_crypto_success(ret)) + break; + + /* Error occurred, report it and get the next entry */ + ctx = crypto_tfm_ctx_dma(held->req->tfm); + if (ctx->complete) + ret = ctx->complete(held->req, ret); + crypto_request_complete(held->req, ret); + + next = ccp_crypto_cmd_complete(held, &backlog); + if (backlog) { + backlog->ret = -EINPROGRESS; + crypto_request_complete(backlog->req, -EINPROGRESS); + } + + kfree(held); + held = next; + } + + kfree(crypto_cmd); +} + +static int ccp_crypto_enqueue_cmd(struct ccp_crypto_cmd *crypto_cmd) +{ + struct ccp_crypto_cmd *active = NULL, *tmp; + unsigned long flags; + bool free_cmd = true; + int ret; + + spin_lock_irqsave(&req_queue_lock, flags); + + /* Check if the cmd can/should be queued */ + if (req_queue.cmd_count >= CCP_CRYPTO_MAX_QLEN) { + if (!(crypto_cmd->cmd->flags & CCP_CMD_MAY_BACKLOG)) { + ret = -ENOSPC; + goto e_lock; + } + } + + /* Look for an entry with the same tfm. If there is a cmd + * with the same tfm in the list then the current cmd cannot + * be submitted to the CCP yet. + */ + list_for_each_entry(tmp, &req_queue.cmds, entry) { + if (crypto_cmd->tfm != tmp->tfm) + continue; + active = tmp; + break; + } + + ret = -EINPROGRESS; + if (!active) { + ret = ccp_enqueue_cmd(crypto_cmd->cmd); + if (!ccp_crypto_success(ret)) + goto e_lock; /* Error, don't queue it */ + } + + if (req_queue.cmd_count >= CCP_CRYPTO_MAX_QLEN) { + ret = -EBUSY; + if (req_queue.backlog == &req_queue.cmds) + req_queue.backlog = &crypto_cmd->entry; + } + crypto_cmd->ret = ret; + + req_queue.cmd_count++; + list_add_tail(&crypto_cmd->entry, &req_queue.cmds); + + free_cmd = false; + +e_lock: + spin_unlock_irqrestore(&req_queue_lock, flags); + + if (free_cmd) + kfree(crypto_cmd); + + return ret; +} + +/** + * ccp_crypto_enqueue_request - queue an crypto async request for processing + * by the CCP + * + * @req: crypto_async_request struct to be processed + * @cmd: ccp_cmd struct to be sent to the CCP + */ +int ccp_crypto_enqueue_request(struct crypto_async_request *req, + struct ccp_cmd *cmd) +{ + struct ccp_crypto_cmd *crypto_cmd; + gfp_t gfp; + + gfp = req->flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : GFP_ATOMIC; + + crypto_cmd = kzalloc(sizeof(*crypto_cmd), gfp); + if (!crypto_cmd) + return -ENOMEM; + + /* The tfm pointer must be saved and not referenced from the + * crypto_async_request (req) pointer because it is used after + * completion callback for the request and the req pointer + * might not be valid anymore. + */ + crypto_cmd->cmd = cmd; + crypto_cmd->req = req; + crypto_cmd->tfm = req->tfm; + + cmd->callback = ccp_crypto_complete; + cmd->data = crypto_cmd; + + if (req->flags & CRYPTO_TFM_REQ_MAY_BACKLOG) + cmd->flags |= CCP_CMD_MAY_BACKLOG; + else + cmd->flags &= ~CCP_CMD_MAY_BACKLOG; + + return ccp_crypto_enqueue_cmd(crypto_cmd); +} + +struct scatterlist *ccp_crypto_sg_table_add(struct sg_table *table, + struct scatterlist *sg_add) +{ + struct scatterlist *sg, *sg_last = NULL; + + for (sg = table->sgl; sg; sg = sg_next(sg)) + if (!sg_page(sg)) + break; + if (WARN_ON(!sg)) + return NULL; + + for (; sg && sg_add; sg = sg_next(sg), sg_add = sg_next(sg_add)) { + sg_set_page(sg, sg_page(sg_add), sg_add->length, + sg_add->offset); + sg_last = sg; + } + if (WARN_ON(sg_add)) + return NULL; + + return sg_last; +} + +static int ccp_register_algs(void) +{ + int ret; + + if (!aes_disable) { + ret = ccp_register_aes_algs(&skcipher_algs); + if (ret) + return ret; + + ret = ccp_register_aes_cmac_algs(&hash_algs); + if (ret) + return ret; + + ret = ccp_register_aes_xts_algs(&skcipher_algs); + if (ret) + return ret; + + ret = ccp_register_aes_aeads(&aead_algs); + if (ret) + return ret; + } + + if (!des3_disable) { + ret = ccp_register_des3_algs(&skcipher_algs); + if (ret) + return ret; + } + + if (!sha_disable) { + ret = ccp_register_sha_algs(&hash_algs); + if (ret) + return ret; + } + + if (!rsa_disable) { + ret = ccp_register_rsa_algs(&akcipher_algs); + if (ret) + return ret; + } + + return 0; +} + +static void ccp_unregister_algs(void) +{ + struct ccp_crypto_ahash_alg *ahash_alg, *ahash_tmp; + struct ccp_crypto_skcipher_alg *ablk_alg, *ablk_tmp; + struct ccp_crypto_aead *aead_alg, *aead_tmp; + struct ccp_crypto_akcipher_alg *akc_alg, *akc_tmp; + + list_for_each_entry_safe(ahash_alg, ahash_tmp, &hash_algs, entry) { + crypto_unregister_ahash(&ahash_alg->alg); + list_del(&ahash_alg->entry); + kfree(ahash_alg); + } + + list_for_each_entry_safe(ablk_alg, ablk_tmp, &skcipher_algs, entry) { + crypto_unregister_skcipher(&ablk_alg->alg); + list_del(&ablk_alg->entry); + kfree(ablk_alg); + } + + list_for_each_entry_safe(aead_alg, aead_tmp, &aead_algs, entry) { + crypto_unregister_aead(&aead_alg->alg); + list_del(&aead_alg->entry); + kfree(aead_alg); + } + + list_for_each_entry_safe(akc_alg, akc_tmp, &akcipher_algs, entry) { + crypto_unregister_akcipher(&akc_alg->alg); + list_del(&akc_alg->entry); + kfree(akc_alg); + } +} + +static int __init ccp_crypto_init(void) +{ + int ret; + + ret = ccp_present(); + if (ret) { + pr_err("Cannot load: there are no available CCPs\n"); + return ret; + } + + INIT_LIST_HEAD(&req_queue.cmds); + req_queue.backlog = &req_queue.cmds; + req_queue.cmd_count = 0; + + ret = ccp_register_algs(); + if (ret) + ccp_unregister_algs(); + + return ret; +} + +static void __exit ccp_crypto_exit(void) +{ + ccp_unregister_algs(); +} + +module_init(ccp_crypto_init); +module_exit(ccp_crypto_exit); -- cgit v1.2.3