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/alpha/lib/ev6-memcpy.S | 250 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 250 insertions(+) create mode 100644 arch/alpha/lib/ev6-memcpy.S (limited to 'arch/alpha/lib/ev6-memcpy.S') diff --git a/arch/alpha/lib/ev6-memcpy.S b/arch/alpha/lib/ev6-memcpy.S new file mode 100644 index 000000000..ffbd056b6 --- /dev/null +++ b/arch/alpha/lib/ev6-memcpy.S @@ -0,0 +1,250 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * arch/alpha/lib/ev6-memcpy.S + * 21264 version by Rick Gorton + * + * Reasonably optimized memcpy() routine for the Alpha 21264 + * + * - memory accessed as aligned quadwords only + * - uses bcmpge to compare 8 bytes in parallel + * + * Much of the information about 21264 scheduling/coding comes from: + * Compiler Writer's Guide for the Alpha 21264 + * abbreviated as 'CWG' in other comments here + * ftp.digital.com/pub/Digital/info/semiconductor/literature/dsc-library.html + * Scheduling notation: + * E - either cluster + * U - upper subcluster; U0 - subcluster U0; U1 - subcluster U1 + * L - lower subcluster; L0 - subcluster L0; L1 - subcluster L1 + * + * Temp usage notes: + * $1,$2, - scratch + */ +#include + .set noreorder + .set noat + + .align 4 + .globl memcpy + .ent memcpy +memcpy: + .frame $30,0,$26,0 + .prologue 0 + + mov $16, $0 # E : copy dest to return + ble $18, $nomoredata # U : done with the copy? + xor $16, $17, $1 # E : are source and dest alignments the same? + and $1, 7, $1 # E : are they the same mod 8? + + bne $1, $misaligned # U : Nope - gotta do this the slow way + /* source and dest are same mod 8 address */ + and $16, 7, $1 # E : Are both 0mod8? + beq $1, $both_0mod8 # U : Yes + nop # E : + + /* + * source and dest are same misalignment. move a byte at a time + * until a 0mod8 alignment for both is reached. + * At least one byte more to move + */ + +$head_align: + ldbu $1, 0($17) # L : grab a byte + subq $18, 1, $18 # E : count-- + addq $17, 1, $17 # E : src++ + stb $1, 0($16) # L : + addq $16, 1, $16 # E : dest++ + and $16, 7, $1 # E : Are we at 0mod8 yet? + ble $18, $nomoredata # U : done with the copy? + bne $1, $head_align # U : + +$both_0mod8: + cmple $18, 127, $1 # E : Can we unroll the loop? + bne $1, $no_unroll # U : + and $16, 63, $1 # E : get mod64 alignment + beq $1, $do_unroll # U : no single quads to fiddle + +$single_head_quad: + ldq $1, 0($17) # L : get 8 bytes + subq $18, 8, $18 # E : count -= 8 + addq $17, 8, $17 # E : src += 8 + nop # E : + + stq $1, 0($16) # L : store + addq $16, 8, $16 # E : dest += 8 + and $16, 63, $1 # E : get mod64 alignment + bne $1, $single_head_quad # U : still not fully aligned + +$do_unroll: + addq $16, 64, $7 # E : Initial (+1 trip) wh64 address + cmple $18, 127, $1 # E : Can we go through the unrolled loop? + bne $1, $tail_quads # U : Nope + nop # E : + +$unroll_body: + wh64 ($7) # L1 : memory subsystem hint: 64 bytes at + # ($7) are about to be over-written + ldq $6, 0($17) # L0 : bytes 0..7 + nop # E : + nop # E : + + ldq $4, 8($17) # L : bytes 8..15 + ldq $5, 16($17) # L : bytes 16..23 + addq $7, 64, $7 # E : Update next wh64 address + nop # E : + + ldq $3, 24($17) # L : bytes 24..31 + addq $16, 64, $1 # E : fallback value for wh64 + nop # E : + nop # E : + + addq $17, 32, $17 # E : src += 32 bytes + stq $6, 0($16) # L : bytes 0..7 + nop # E : + nop # E : + + stq $4, 8($16) # L : bytes 8..15 + stq $5, 16($16) # L : bytes 16..23 + subq $18, 192, $2 # E : At least two more trips to go? + nop # E : + + stq $3, 24($16) # L : bytes 24..31 + addq $16, 32, $16 # E : dest += 32 bytes + nop # E : + nop # E : + + ldq $6, 0($17) # L : bytes 0..7 + ldq $4, 8($17) # L : bytes 8..15 + cmovlt $2, $1, $7 # E : Latency 2, extra map slot - Use + # fallback wh64 address if < 2 more trips + nop # E : + + ldq $5, 16($17) # L : bytes 16..23 + ldq $3, 24($17) # L : bytes 24..31 + addq $16, 32, $16 # E : dest += 32 + subq $18, 64, $18 # E : count -= 64 + + addq $17, 32, $17 # E : src += 32 + stq $6, -32($16) # L : bytes 0..7 + stq $4, -24($16) # L : bytes 8..15 + cmple $18, 63, $1 # E : At least one more trip? + + stq $5, -16($16) # L : bytes 16..23 + stq $3, -8($16) # L : bytes 24..31 + nop # E : + beq $1, $unroll_body + +$tail_quads: +$no_unroll: + .align 4 + subq $18, 8, $18 # E : At least a quad left? + blt $18, $less_than_8 # U : Nope + nop # E : + nop # E : + +$move_a_quad: + ldq $1, 0($17) # L : fetch 8 + subq $18, 8, $18 # E : count -= 8 + addq $17, 8, $17 # E : src += 8 + nop # E : + + stq $1, 0($16) # L : store 8 + addq $16, 8, $16 # E : dest += 8 + bge $18, $move_a_quad # U : + nop # E : + +$less_than_8: + .align 4 + addq $18, 8, $18 # E : add back for trailing bytes + ble $18, $nomoredata # U : All-done + nop # E : + nop # E : + + /* Trailing bytes */ +$tail_bytes: + subq $18, 1, $18 # E : count-- + ldbu $1, 0($17) # L : fetch a byte + addq $17, 1, $17 # E : src++ + nop # E : + + stb $1, 0($16) # L : store a byte + addq $16, 1, $16 # E : dest++ + bgt $18, $tail_bytes # U : more to be done? + nop # E : + + /* branching to exit takes 3 extra cycles, so replicate exit here */ + ret $31, ($26), 1 # L0 : + nop # E : + nop # E : + nop # E : + +$misaligned: + mov $0, $4 # E : dest temp + and $0, 7, $1 # E : dest alignment mod8 + beq $1, $dest_0mod8 # U : life doesnt totally suck + nop + +$aligndest: + ble $18, $nomoredata # U : + ldbu $1, 0($17) # L : fetch a byte + subq $18, 1, $18 # E : count-- + addq $17, 1, $17 # E : src++ + + stb $1, 0($4) # L : store it + addq $4, 1, $4 # E : dest++ + and $4, 7, $1 # E : dest 0mod8 yet? + bne $1, $aligndest # U : go until we are aligned. + + /* Source has unknown alignment, but dest is known to be 0mod8 */ +$dest_0mod8: + subq $18, 8, $18 # E : At least a quad left? + blt $18, $misalign_tail # U : Nope + ldq_u $3, 0($17) # L : seed (rotating load) of 8 bytes + nop # E : + +$mis_quad: + ldq_u $16, 8($17) # L : Fetch next 8 + extql $3, $17, $3 # U : masking + extqh $16, $17, $1 # U : masking + bis $3, $1, $1 # E : merged bytes to store + + subq $18, 8, $18 # E : count -= 8 + addq $17, 8, $17 # E : src += 8 + stq $1, 0($4) # L : store 8 (aligned) + mov $16, $3 # E : "rotate" source data + + addq $4, 8, $4 # E : dest += 8 + bge $18, $mis_quad # U : More quads to move + nop + nop + +$misalign_tail: + addq $18, 8, $18 # E : account for tail stuff + ble $18, $nomoredata # U : + nop + nop + +$misalign_byte: + ldbu $1, 0($17) # L : fetch 1 + subq $18, 1, $18 # E : count-- + addq $17, 1, $17 # E : src++ + nop # E : + + stb $1, 0($4) # L : store + addq $4, 1, $4 # E : dest++ + bgt $18, $misalign_byte # U : more to go? + nop + + +$nomoredata: + ret $31, ($26), 1 # L0 : + nop # E : + nop # E : + nop # E : + + .end memcpy + EXPORT_SYMBOL(memcpy) + +/* For backwards module compatibility. */ +__memcpy = memcpy +.globl __memcpy -- cgit v1.2.3