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-debugfs.c | 323 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 323 insertions(+) create mode 100644 drivers/crypto/ccp/ccp-debugfs.c (limited to 'drivers/crypto/ccp/ccp-debugfs.c') diff --git a/drivers/crypto/ccp/ccp-debugfs.c b/drivers/crypto/ccp/ccp-debugfs.c new file mode 100644 index 000000000..a1055554b --- /dev/null +++ b/drivers/crypto/ccp/ccp-debugfs.c @@ -0,0 +1,323 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * AMD Cryptographic Coprocessor (CCP) driver + * + * Copyright (C) 2017 Advanced Micro Devices, Inc. + * + * Author: Gary R Hook + */ + +#include +#include + +#include "ccp-dev.h" + +/* DebugFS helpers */ +#define OBUFP (obuf + oboff) +#define OBUFLEN 512 +#define OBUFSPC (OBUFLEN - oboff) +#define OSCNPRINTF(fmt, ...) \ + scnprintf(OBUFP, OBUFSPC, fmt, ## __VA_ARGS__) + +#define BUFLEN 63 + +#define RI_VERSION_NUM 0x0000003F +#define RI_AES_PRESENT 0x00000040 +#define RI_3DES_PRESENT 0x00000080 +#define RI_SHA_PRESENT 0x00000100 +#define RI_RSA_PRESENT 0x00000200 +#define RI_ECC_PRESENT 0x00000400 +#define RI_ZDE_PRESENT 0x00000800 +#define RI_ZCE_PRESENT 0x00001000 +#define RI_TRNG_PRESENT 0x00002000 +#define RI_ELFC_PRESENT 0x00004000 +#define RI_ELFC_SHIFT 14 +#define RI_NUM_VQM 0x00078000 +#define RI_NVQM_SHIFT 15 +#define RI_NVQM(r) (((r) * RI_NUM_VQM) >> RI_NVQM_SHIFT) +#define RI_LSB_ENTRIES 0x0FF80000 +#define RI_NLSB_SHIFT 19 +#define RI_NLSB(r) (((r) * RI_LSB_ENTRIES) >> RI_NLSB_SHIFT) + +static ssize_t ccp5_debugfs_info_read(struct file *filp, char __user *ubuf, + size_t count, loff_t *offp) +{ + struct ccp_device *ccp = filp->private_data; + unsigned int oboff = 0; + unsigned int regval; + ssize_t ret; + char *obuf; + + if (!ccp) + return 0; + + obuf = kmalloc(OBUFLEN, GFP_KERNEL); + if (!obuf) + return -ENOMEM; + + oboff += OSCNPRINTF("Device name: %s\n", ccp->name); + oboff += OSCNPRINTF(" RNG name: %s\n", ccp->rngname); + oboff += OSCNPRINTF(" # Queues: %d\n", ccp->cmd_q_count); + oboff += OSCNPRINTF(" # Cmds: %d\n", ccp->cmd_count); + + regval = ioread32(ccp->io_regs + CMD5_PSP_CCP_VERSION); + oboff += OSCNPRINTF(" Version: %d\n", regval & RI_VERSION_NUM); + oboff += OSCNPRINTF(" Engines:"); + if (regval & RI_AES_PRESENT) + oboff += OSCNPRINTF(" AES"); + if (regval & RI_3DES_PRESENT) + oboff += OSCNPRINTF(" 3DES"); + if (regval & RI_SHA_PRESENT) + oboff += OSCNPRINTF(" SHA"); + if (regval & RI_RSA_PRESENT) + oboff += OSCNPRINTF(" RSA"); + if (regval & RI_ECC_PRESENT) + oboff += OSCNPRINTF(" ECC"); + if (regval & RI_ZDE_PRESENT) + oboff += OSCNPRINTF(" ZDE"); + if (regval & RI_ZCE_PRESENT) + oboff += OSCNPRINTF(" ZCE"); + if (regval & RI_TRNG_PRESENT) + oboff += OSCNPRINTF(" TRNG"); + oboff += OSCNPRINTF("\n"); + oboff += OSCNPRINTF(" Queues: %d\n", + (regval & RI_NUM_VQM) >> RI_NVQM_SHIFT); + oboff += OSCNPRINTF("LSB Entries: %d\n", + (regval & RI_LSB_ENTRIES) >> RI_NLSB_SHIFT); + + ret = simple_read_from_buffer(ubuf, count, offp, obuf, oboff); + kfree(obuf); + + return ret; +} + +/* Return a formatted buffer containing the current + * statistics across all queues for a CCP. + */ +static ssize_t ccp5_debugfs_stats_read(struct file *filp, char __user *ubuf, + size_t count, loff_t *offp) +{ + struct ccp_device *ccp = filp->private_data; + unsigned long total_xts_aes_ops = 0; + unsigned long total_3des_ops = 0; + unsigned long total_aes_ops = 0; + unsigned long total_sha_ops = 0; + unsigned long total_rsa_ops = 0; + unsigned long total_ecc_ops = 0; + unsigned long total_pt_ops = 0; + unsigned long total_ops = 0; + unsigned int oboff = 0; + ssize_t ret = 0; + unsigned int i; + char *obuf; + + for (i = 0; i < ccp->cmd_q_count; i++) { + struct ccp_cmd_queue *cmd_q = &ccp->cmd_q[i]; + + total_ops += cmd_q->total_ops; + total_aes_ops += cmd_q->total_aes_ops; + total_xts_aes_ops += cmd_q->total_xts_aes_ops; + total_3des_ops += cmd_q->total_3des_ops; + total_sha_ops += cmd_q->total_sha_ops; + total_rsa_ops += cmd_q->total_rsa_ops; + total_pt_ops += cmd_q->total_pt_ops; + total_ecc_ops += cmd_q->total_ecc_ops; + } + + obuf = kmalloc(OBUFLEN, GFP_KERNEL); + if (!obuf) + return -ENOMEM; + + oboff += OSCNPRINTF("Total Interrupts Handled: %ld\n", + ccp->total_interrupts); + oboff += OSCNPRINTF(" Total Operations: %ld\n", + total_ops); + oboff += OSCNPRINTF(" AES: %ld\n", + total_aes_ops); + oboff += OSCNPRINTF(" XTS AES: %ld\n", + total_xts_aes_ops); + oboff += OSCNPRINTF(" SHA: %ld\n", + total_3des_ops); + oboff += OSCNPRINTF(" SHA: %ld\n", + total_sha_ops); + oboff += OSCNPRINTF(" RSA: %ld\n", + total_rsa_ops); + oboff += OSCNPRINTF(" Pass-Thru: %ld\n", + total_pt_ops); + oboff += OSCNPRINTF(" ECC: %ld\n", + total_ecc_ops); + + ret = simple_read_from_buffer(ubuf, count, offp, obuf, oboff); + kfree(obuf); + + return ret; +} + +/* Reset the counters in a queue + */ +static void ccp5_debugfs_reset_queue_stats(struct ccp_cmd_queue *cmd_q) +{ + cmd_q->total_ops = 0L; + cmd_q->total_aes_ops = 0L; + cmd_q->total_xts_aes_ops = 0L; + cmd_q->total_3des_ops = 0L; + cmd_q->total_sha_ops = 0L; + cmd_q->total_rsa_ops = 0L; + cmd_q->total_pt_ops = 0L; + cmd_q->total_ecc_ops = 0L; +} + +/* A value was written to the stats variable, which + * should be used to reset the queue counters across + * that device. + */ +static ssize_t ccp5_debugfs_stats_write(struct file *filp, + const char __user *ubuf, + size_t count, loff_t *offp) +{ + struct ccp_device *ccp = filp->private_data; + int i; + + for (i = 0; i < ccp->cmd_q_count; i++) + ccp5_debugfs_reset_queue_stats(&ccp->cmd_q[i]); + ccp->total_interrupts = 0L; + + return count; +} + +/* Return a formatted buffer containing the current information + * for that queue + */ +static ssize_t ccp5_debugfs_queue_read(struct file *filp, char __user *ubuf, + size_t count, loff_t *offp) +{ + struct ccp_cmd_queue *cmd_q = filp->private_data; + unsigned int oboff = 0; + unsigned int regval; + ssize_t ret; + char *obuf; + + if (!cmd_q) + return 0; + + obuf = kmalloc(OBUFLEN, GFP_KERNEL); + if (!obuf) + return -ENOMEM; + + oboff += OSCNPRINTF(" Total Queue Operations: %ld\n", + cmd_q->total_ops); + oboff += OSCNPRINTF(" AES: %ld\n", + cmd_q->total_aes_ops); + oboff += OSCNPRINTF(" XTS AES: %ld\n", + cmd_q->total_xts_aes_ops); + oboff += OSCNPRINTF(" SHA: %ld\n", + cmd_q->total_3des_ops); + oboff += OSCNPRINTF(" SHA: %ld\n", + cmd_q->total_sha_ops); + oboff += OSCNPRINTF(" RSA: %ld\n", + cmd_q->total_rsa_ops); + oboff += OSCNPRINTF(" Pass-Thru: %ld\n", + cmd_q->total_pt_ops); + oboff += OSCNPRINTF(" ECC: %ld\n", + cmd_q->total_ecc_ops); + + regval = ioread32(cmd_q->reg_int_enable); + oboff += OSCNPRINTF(" Enabled Interrupts:"); + if (regval & INT_EMPTY_QUEUE) + oboff += OSCNPRINTF(" EMPTY"); + if (regval & INT_QUEUE_STOPPED) + oboff += OSCNPRINTF(" STOPPED"); + if (regval & INT_ERROR) + oboff += OSCNPRINTF(" ERROR"); + if (regval & INT_COMPLETION) + oboff += OSCNPRINTF(" COMPLETION"); + oboff += OSCNPRINTF("\n"); + + ret = simple_read_from_buffer(ubuf, count, offp, obuf, oboff); + kfree(obuf); + + return ret; +} + +/* A value was written to the stats variable for a + * queue. Reset the queue counters to this value. + */ +static ssize_t ccp5_debugfs_queue_write(struct file *filp, + const char __user *ubuf, + size_t count, loff_t *offp) +{ + struct ccp_cmd_queue *cmd_q = filp->private_data; + + ccp5_debugfs_reset_queue_stats(cmd_q); + + return count; +} + +static const struct file_operations ccp_debugfs_info_ops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = ccp5_debugfs_info_read, + .write = NULL, +}; + +static const struct file_operations ccp_debugfs_queue_ops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = ccp5_debugfs_queue_read, + .write = ccp5_debugfs_queue_write, +}; + +static const struct file_operations ccp_debugfs_stats_ops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = ccp5_debugfs_stats_read, + .write = ccp5_debugfs_stats_write, +}; + +static struct dentry *ccp_debugfs_dir; +static DEFINE_MUTEX(ccp_debugfs_lock); + +#define MAX_NAME_LEN 20 + +void ccp5_debugfs_setup(struct ccp_device *ccp) +{ + struct ccp_cmd_queue *cmd_q; + char name[MAX_NAME_LEN + 1]; + struct dentry *debugfs_q_instance; + int i; + + if (!debugfs_initialized()) + return; + + mutex_lock(&ccp_debugfs_lock); + if (!ccp_debugfs_dir) + ccp_debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL); + mutex_unlock(&ccp_debugfs_lock); + + ccp->debugfs_instance = debugfs_create_dir(ccp->name, ccp_debugfs_dir); + + debugfs_create_file("info", 0400, ccp->debugfs_instance, ccp, + &ccp_debugfs_info_ops); + + debugfs_create_file("stats", 0600, ccp->debugfs_instance, ccp, + &ccp_debugfs_stats_ops); + + for (i = 0; i < ccp->cmd_q_count; i++) { + cmd_q = &ccp->cmd_q[i]; + + snprintf(name, MAX_NAME_LEN - 1, "q%d", cmd_q->id); + + debugfs_q_instance = + debugfs_create_dir(name, ccp->debugfs_instance); + + debugfs_create_file("stats", 0600, debugfs_q_instance, cmd_q, + &ccp_debugfs_queue_ops); + } + + return; +} + +void ccp5_debugfs_destroy(void) +{ + debugfs_remove_recursive(ccp_debugfs_dir); +} -- cgit v1.2.3