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(). ... --- arch/s390/tools/gen_opcode_table.c | 337 +++++++++++++++++++++++++++++++++++++ 1 file changed, 337 insertions(+) create mode 100644 arch/s390/tools/gen_opcode_table.c (limited to 'arch/s390/tools/gen_opcode_table.c') diff --git a/arch/s390/tools/gen_opcode_table.c b/arch/s390/tools/gen_opcode_table.c new file mode 100644 index 000000000..a1bc02b29 --- /dev/null +++ b/arch/s390/tools/gen_opcode_table.c @@ -0,0 +1,337 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Generate opcode table initializers for the in-kernel disassembler. + * + * Copyright IBM Corp. 2017 + * + */ + +#include +#include +#include +#include + +#define STRING_SIZE_MAX 20 + +struct insn_type { + unsigned char byte; + unsigned char mask; + char **format; +}; + +struct insn { + struct insn_type *type; + char opcode[STRING_SIZE_MAX]; + char name[STRING_SIZE_MAX]; + char upper[STRING_SIZE_MAX]; + char format[STRING_SIZE_MAX]; + unsigned int name_len; +}; + +struct insn_group { + struct insn_type *type; + int offset; + int count; + char opcode[2]; +}; + +struct insn_format { + char *format; + int type; +}; + +struct gen_opcode { + struct insn *insn; + int nr; + struct insn_group *group; + int nr_groups; +}; + +/* + * Table of instruction format types. Each opcode is defined with at + * least one byte (two nibbles), three nibbles, or two bytes (four + * nibbles). + * The byte member of each instruction format type entry defines + * within which byte of an instruction the third (and fourth) nibble + * of an opcode can be found. The mask member is the and-mask that + * needs to be applied on this byte in order to get the third (and + * fourth) nibble of the opcode. + * The format array defines all instruction formats (as defined in the + * Principles of Operation) which have the same position of the opcode + * nibbles. + * A special case are instruction formats with 1-byte opcodes. In this + * case the byte member always is zero, so that the mask is applied on + * the (only) byte that contains the opcode. + */ +static struct insn_type insn_type_table[] = { + { + .byte = 0, + .mask = 0xff, + .format = (char *[]) { + "MII", + "RR", + "RS", + "RSI", + "RX", + "SI", + "SMI", + "SS", + NULL, + }, + }, + { + .byte = 1, + .mask = 0x0f, + .format = (char *[]) { + "RI", + "RIL", + "SSF", + NULL, + }, + }, + { + .byte = 1, + .mask = 0xff, + .format = (char *[]) { + "E", + "IE", + "RRE", + "RRF", + "RRR", + "S", + "SIL", + "SSE", + NULL, + }, + }, + { + .byte = 5, + .mask = 0xff, + .format = (char *[]) { + "RIE", + "RIS", + "RRS", + "RSE", + "RSL", + "RSY", + "RXE", + "RXF", + "RXY", + "SIY", + "VRI", + "VRR", + "VRS", + "VRV", + "VRX", + "VSI", + NULL, + }, + }, +}; + +static struct insn_type *insn_format_to_type(char *format) +{ + char tmp[STRING_SIZE_MAX]; + char *base_format, **ptr; + int i; + + strcpy(tmp, format); + base_format = tmp; + base_format = strsep(&base_format, "_"); + for (i = 0; i < sizeof(insn_type_table) / sizeof(insn_type_table[0]); i++) { + ptr = insn_type_table[i].format; + while (*ptr) { + if (!strcmp(base_format, *ptr)) + return &insn_type_table[i]; + ptr++; + } + } + exit(EXIT_FAILURE); +} + +static void read_instructions(struct gen_opcode *desc) +{ + struct insn insn; + int rc, i; + + while (1) { + rc = scanf("%s %s %s", insn.opcode, insn.name, insn.format); + if (rc == EOF) + break; + if (rc != 3) + exit(EXIT_FAILURE); + insn.type = insn_format_to_type(insn.format); + insn.name_len = strlen(insn.name); + for (i = 0; i <= insn.name_len; i++) + insn.upper[i] = toupper((unsigned char)insn.name[i]); + desc->nr++; + desc->insn = realloc(desc->insn, desc->nr * sizeof(*desc->insn)); + if (!desc->insn) + exit(EXIT_FAILURE); + desc->insn[desc->nr - 1] = insn; + } +} + +static int cmpformat(const void *a, const void *b) +{ + return strcmp(((struct insn *)a)->format, ((struct insn *)b)->format); +} + +static void print_formats(struct gen_opcode *desc) +{ + char *format; + int i, count; + + qsort(desc->insn, desc->nr, sizeof(*desc->insn), cmpformat); + format = ""; + count = 0; + printf("enum {\n"); + for (i = 0; i < desc->nr; i++) { + if (!strcmp(format, desc->insn[i].format)) + continue; + count++; + format = desc->insn[i].format; + printf("\tINSTR_%s,\n", format); + } + printf("}; /* %d */\n\n", count); +} + +static int cmp_long_insn(const void *a, const void *b) +{ + return strcmp(((struct insn *)a)->name, ((struct insn *)b)->name); +} + +static void print_long_insn(struct gen_opcode *desc) +{ + struct insn *insn; + int i, count; + + qsort(desc->insn, desc->nr, sizeof(*desc->insn), cmp_long_insn); + count = 0; + printf("enum {\n"); + for (i = 0; i < desc->nr; i++) { + insn = &desc->insn[i]; + if (insn->name_len < 6) + continue; + printf("\tLONG_INSN_%s,\n", insn->upper); + count++; + } + printf("}; /* %d */\n\n", count); + + printf("#define LONG_INSN_INITIALIZER { \\\n"); + for (i = 0; i < desc->nr; i++) { + insn = &desc->insn[i]; + if (insn->name_len < 6) + continue; + printf("\t[LONG_INSN_%s] = \"%s\", \\\n", insn->upper, insn->name); + } + printf("}\n\n"); +} + +static void print_opcode(struct insn *insn, int nr) +{ + char *opcode; + + opcode = insn->opcode; + if (insn->type->byte != 0) + opcode += 2; + printf("\t[%4d] = { .opfrag = 0x%s, .format = INSTR_%s, ", nr, opcode, insn->format); + if (insn->name_len < 6) + printf(".name = \"%s\" ", insn->name); + else + printf(".offset = LONG_INSN_%s ", insn->upper); + printf("}, \\\n"); +} + +static void add_to_group(struct gen_opcode *desc, struct insn *insn, int offset) +{ + struct insn_group *group; + + group = desc->group ? &desc->group[desc->nr_groups - 1] : NULL; + if (group && (!strncmp(group->opcode, insn->opcode, 2) || group->type->byte == 0)) { + group->count++; + return; + } + desc->nr_groups++; + desc->group = realloc(desc->group, desc->nr_groups * sizeof(*desc->group)); + if (!desc->group) + exit(EXIT_FAILURE); + group = &desc->group[desc->nr_groups - 1]; + memcpy(group->opcode, insn->opcode, 2); + group->type = insn->type; + group->offset = offset; + group->count = 1; +} + +static int cmpopcode(const void *a, const void *b) +{ + return strcmp(((struct insn *)a)->opcode, ((struct insn *)b)->opcode); +} + +static void print_opcode_table(struct gen_opcode *desc) +{ + char opcode[2] = ""; + struct insn *insn; + int i, offset; + + qsort(desc->insn, desc->nr, sizeof(*desc->insn), cmpopcode); + printf("#define OPCODE_TABLE_INITIALIZER { \\\n"); + offset = 0; + for (i = 0; i < desc->nr; i++) { + insn = &desc->insn[i]; + if (insn->type->byte == 0) + continue; + add_to_group(desc, insn, offset); + if (strncmp(opcode, insn->opcode, 2)) { + memcpy(opcode, insn->opcode, 2); + printf("\t/* %.2s */ \\\n", opcode); + } + print_opcode(insn, offset); + offset++; + } + printf("\t/* 1-byte opcode instructions */ \\\n"); + for (i = 0; i < desc->nr; i++) { + insn = &desc->insn[i]; + if (insn->type->byte != 0) + continue; + add_to_group(desc, insn, offset); + print_opcode(insn, offset); + offset++; + } + printf("}\n\n"); +} + +static void print_opcode_table_offsets(struct gen_opcode *desc) +{ + struct insn_group *group; + int i; + + printf("#define OPCODE_OFFSET_INITIALIZER { \\\n"); + for (i = 0; i < desc->nr_groups; i++) { + group = &desc->group[i]; + printf("\t{ .opcode = 0x%.2s, .mask = 0x%02x, .byte = %d, .offset = %d, .count = %d }, \\\n", + group->opcode, group->type->mask, group->type->byte, group->offset, group->count); + } + printf("}\n\n"); +} + +int main(int argc, char **argv) +{ + struct gen_opcode _desc = { 0 }; + struct gen_opcode *desc = &_desc; + + read_instructions(desc); + printf("#ifndef __S390_GENERATED_DIS_DEFS_H__\n"); + printf("#define __S390_GENERATED_DIS_DEFS_H__\n"); + printf("/*\n"); + printf(" * DO NOT MODIFY.\n"); + printf(" *\n"); + printf(" * This file was generated by %s\n", __FILE__); + printf(" */\n\n"); + print_formats(desc); + print_long_insn(desc); + print_opcode_table(desc); + print_opcode_table_offsets(desc); + printf("#endif\n"); + exit(EXIT_SUCCESS); +} -- cgit v1.2.3