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/misc/sgi-gru/gruprocfs.c | 308 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 308 insertions(+) create mode 100644 drivers/misc/sgi-gru/gruprocfs.c (limited to 'drivers/misc/sgi-gru/gruprocfs.c') diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c new file mode 100644 index 000000000..97b8b38ab --- /dev/null +++ b/drivers/misc/sgi-gru/gruprocfs.c @@ -0,0 +1,308 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * SN Platform GRU Driver + * + * PROC INTERFACES + * + * This file supports the /proc interfaces for the GRU driver + * + * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. + */ + +#include +#include +#include +#include +#include "gru.h" +#include "grulib.h" +#include "grutables.h" + +#define printstat(s, f) printstat_val(s, &gru_stats.f, #f) + +static void printstat_val(struct seq_file *s, atomic_long_t *v, char *id) +{ + unsigned long val = atomic_long_read(v); + + seq_printf(s, "%16lu %s\n", val, id); +} + +static int statistics_show(struct seq_file *s, void *p) +{ + printstat(s, vdata_alloc); + printstat(s, vdata_free); + printstat(s, gts_alloc); + printstat(s, gts_free); + printstat(s, gms_alloc); + printstat(s, gms_free); + printstat(s, gts_double_allocate); + printstat(s, assign_context); + printstat(s, assign_context_failed); + printstat(s, free_context); + printstat(s, load_user_context); + printstat(s, load_kernel_context); + printstat(s, lock_kernel_context); + printstat(s, unlock_kernel_context); + printstat(s, steal_user_context); + printstat(s, steal_kernel_context); + printstat(s, steal_context_failed); + printstat(s, nopfn); + printstat(s, asid_new); + printstat(s, asid_next); + printstat(s, asid_wrap); + printstat(s, asid_reuse); + printstat(s, intr); + printstat(s, intr_cbr); + printstat(s, intr_tfh); + printstat(s, intr_spurious); + printstat(s, intr_mm_lock_failed); + printstat(s, call_os); + printstat(s, call_os_wait_queue); + printstat(s, user_flush_tlb); + printstat(s, user_unload_context); + printstat(s, user_exception); + printstat(s, set_context_option); + printstat(s, check_context_retarget_intr); + printstat(s, check_context_unload); + printstat(s, tlb_dropin); + printstat(s, tlb_preload_page); + printstat(s, tlb_dropin_fail_no_asid); + printstat(s, tlb_dropin_fail_upm); + printstat(s, tlb_dropin_fail_invalid); + printstat(s, tlb_dropin_fail_range_active); + printstat(s, tlb_dropin_fail_idle); + printstat(s, tlb_dropin_fail_fmm); + printstat(s, tlb_dropin_fail_no_exception); + printstat(s, tfh_stale_on_fault); + printstat(s, mmu_invalidate_range); + printstat(s, mmu_invalidate_page); + printstat(s, flush_tlb); + printstat(s, flush_tlb_gru); + printstat(s, flush_tlb_gru_tgh); + printstat(s, flush_tlb_gru_zero_asid); + printstat(s, copy_gpa); + printstat(s, read_gpa); + printstat(s, mesq_receive); + printstat(s, mesq_receive_none); + printstat(s, mesq_send); + printstat(s, mesq_send_failed); + printstat(s, mesq_noop); + printstat(s, mesq_send_unexpected_error); + printstat(s, mesq_send_lb_overflow); + printstat(s, mesq_send_qlimit_reached); + printstat(s, mesq_send_amo_nacked); + printstat(s, mesq_send_put_nacked); + printstat(s, mesq_qf_locked); + printstat(s, mesq_qf_noop_not_full); + printstat(s, mesq_qf_switch_head_failed); + printstat(s, mesq_qf_unexpected_error); + printstat(s, mesq_noop_unexpected_error); + printstat(s, mesq_noop_lb_overflow); + printstat(s, mesq_noop_qlimit_reached); + printstat(s, mesq_noop_amo_nacked); + printstat(s, mesq_noop_put_nacked); + printstat(s, mesq_noop_page_overflow); + return 0; +} + +static ssize_t statistics_write(struct file *file, const char __user *userbuf, + size_t count, loff_t *data) +{ + memset(&gru_stats, 0, sizeof(gru_stats)); + return count; +} + +static int mcs_statistics_show(struct seq_file *s, void *p) +{ + int op; + unsigned long total, count, max; + static char *id[] = {"cch_allocate", "cch_start", "cch_interrupt", + "cch_interrupt_sync", "cch_deallocate", "tfh_write_only", + "tfh_write_restart", "tgh_invalidate"}; + + seq_puts(s, "#id count aver-clks max-clks\n"); + for (op = 0; op < mcsop_last; op++) { + count = atomic_long_read(&mcs_op_statistics[op].count); + total = atomic_long_read(&mcs_op_statistics[op].total); + max = mcs_op_statistics[op].max; + seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count, + count ? total / count : 0, max); + } + return 0; +} + +static ssize_t mcs_statistics_write(struct file *file, + const char __user *userbuf, size_t count, loff_t *data) +{ + memset(mcs_op_statistics, 0, sizeof(mcs_op_statistics)); + return count; +} + +static int options_show(struct seq_file *s, void *p) +{ + seq_printf(s, "#bitmask: 1=trace, 2=statistics\n"); + seq_printf(s, "0x%lx\n", gru_options); + return 0; +} + +static ssize_t options_write(struct file *file, const char __user *userbuf, + size_t count, loff_t *data) +{ + int ret; + + ret = kstrtoul_from_user(userbuf, count, 0, &gru_options); + if (ret) + return ret; + + return count; +} + +static int cch_seq_show(struct seq_file *file, void *data) +{ + long gid = *(long *)data; + int i; + struct gru_state *gru = GID_TO_GRU(gid); + struct gru_thread_state *ts; + const char *mode[] = { "??", "UPM", "INTR", "OS_POLL" }; + + if (gid == 0) + seq_puts(file, "# gid bid ctx# asid pid cbrs dsbytes mode\n"); + if (gru) + for (i = 0; i < GRU_NUM_CCH; i++) { + ts = gru->gs_gts[i]; + if (!ts) + continue; + seq_printf(file, " %5d%5d%6d%7d%9d%6d%8d%8s\n", + gru->gs_gid, gru->gs_blade_id, i, + is_kernel_context(ts) ? 0 : ts->ts_gms->ms_asids[gid].mt_asid, + is_kernel_context(ts) ? 0 : ts->ts_tgid_owner, + ts->ts_cbr_au_count * GRU_CBR_AU_SIZE, + ts->ts_cbr_au_count * GRU_DSR_AU_BYTES, + mode[ts->ts_user_options & + GRU_OPT_MISS_MASK]); + } + + return 0; +} + +static int gru_seq_show(struct seq_file *file, void *data) +{ + long gid = *(long *)data, ctxfree, cbrfree, dsrfree; + struct gru_state *gru = GID_TO_GRU(gid); + + if (gid == 0) { + seq_puts(file, "# gid nid ctx cbr dsr ctx cbr dsr\n"); + seq_puts(file, "# busy busy busy free free free\n"); + } + if (gru) { + ctxfree = GRU_NUM_CCH - gru->gs_active_contexts; + cbrfree = hweight64(gru->gs_cbr_map) * GRU_CBR_AU_SIZE; + dsrfree = hweight64(gru->gs_dsr_map) * GRU_DSR_AU_BYTES; + seq_printf(file, " %5d%5d%7ld%6ld%6ld%8ld%6ld%6ld\n", + gru->gs_gid, gru->gs_blade_id, GRU_NUM_CCH - ctxfree, + GRU_NUM_CBE - cbrfree, GRU_NUM_DSR_BYTES - dsrfree, + ctxfree, cbrfree, dsrfree); + } + + return 0; +} + +static void seq_stop(struct seq_file *file, void *data) +{ +} + +static void *seq_start(struct seq_file *file, loff_t *gid) +{ + if (*gid < gru_max_gids) + return gid; + return NULL; +} + +static void *seq_next(struct seq_file *file, void *data, loff_t *gid) +{ + (*gid)++; + if (*gid < gru_max_gids) + return gid; + return NULL; +} + +static const struct seq_operations cch_seq_ops = { + .start = seq_start, + .next = seq_next, + .stop = seq_stop, + .show = cch_seq_show +}; + +static const struct seq_operations gru_seq_ops = { + .start = seq_start, + .next = seq_next, + .stop = seq_stop, + .show = gru_seq_show +}; + +static int statistics_open(struct inode *inode, struct file *file) +{ + return single_open(file, statistics_show, NULL); +} + +static int mcs_statistics_open(struct inode *inode, struct file *file) +{ + return single_open(file, mcs_statistics_show, NULL); +} + +static int options_open(struct inode *inode, struct file *file) +{ + return single_open(file, options_show, NULL); +} + +/* *INDENT-OFF* */ +static const struct proc_ops statistics_proc_ops = { + .proc_open = statistics_open, + .proc_read = seq_read, + .proc_write = statistics_write, + .proc_lseek = seq_lseek, + .proc_release = single_release, +}; + +static const struct proc_ops mcs_statistics_proc_ops = { + .proc_open = mcs_statistics_open, + .proc_read = seq_read, + .proc_write = mcs_statistics_write, + .proc_lseek = seq_lseek, + .proc_release = single_release, +}; + +static const struct proc_ops options_proc_ops = { + .proc_open = options_open, + .proc_read = seq_read, + .proc_write = options_write, + .proc_lseek = seq_lseek, + .proc_release = single_release, +}; + +static struct proc_dir_entry *proc_gru __read_mostly; + +int gru_proc_init(void) +{ + proc_gru = proc_mkdir("sgi_uv/gru", NULL); + if (!proc_gru) + return -1; + if (!proc_create("statistics", 0644, proc_gru, &statistics_proc_ops)) + goto err; + if (!proc_create("mcs_statistics", 0644, proc_gru, &mcs_statistics_proc_ops)) + goto err; + if (!proc_create("debug_options", 0644, proc_gru, &options_proc_ops)) + goto err; + if (!proc_create_seq("cch_status", 0444, proc_gru, &cch_seq_ops)) + goto err; + if (!proc_create_seq("gru_status", 0444, proc_gru, &gru_seq_ops)) + goto err; + return 0; +err: + remove_proc_subtree("sgi_uv/gru", NULL); + return -1; +} + +void gru_proc_exit(void) +{ + remove_proc_subtree("sgi_uv/gru", NULL); +} -- cgit v1.2.3