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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /arch/m68k/fpsp040/binstr.S
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Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
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(). ...
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+|
+| binstr.sa 3.3 12/19/90
+|
+|
+| Description: Converts a 64-bit binary integer to bcd.
+|
+| Input: 64-bit binary integer in d2:d3, desired length (LEN) in
+| d0, and a pointer to start in memory for bcd characters
+| in d0. (This pointer must point to byte 4 of the first
+| lword of the packed decimal memory string.)
+|
+| Output: LEN bcd digits representing the 64-bit integer.
+|
+| Algorithm:
+| The 64-bit binary is assumed to have a decimal point before
+| bit 63. The fraction is multiplied by 10 using a mul by 2
+| shift and a mul by 8 shift. The bits shifted out of the
+| msb form a decimal digit. This process is iterated until
+| LEN digits are formed.
+|
+| A1. Init d7 to 1. D7 is the byte digit counter, and if 1, the
+| digit formed will be assumed the least significant. This is
+| to force the first byte formed to have a 0 in the upper 4 bits.
+|
+| A2. Beginning of the loop:
+| Copy the fraction in d2:d3 to d4:d5.
+|
+| A3. Multiply the fraction in d2:d3 by 8 using bit-field
+| extracts and shifts. The three msbs from d2 will go into
+| d1.
+|
+| A4. Multiply the fraction in d4:d5 by 2 using shifts. The msb
+| will be collected by the carry.
+|
+| A5. Add using the carry the 64-bit quantities in d2:d3 and d4:d5
+| into d2:d3. D1 will contain the bcd digit formed.
+|
+| A6. Test d7. If zero, the digit formed is the ms digit. If non-
+| zero, it is the ls digit. Put the digit in its place in the
+| upper word of d0. If it is the ls digit, write the word
+| from d0 to memory.
+|
+| A7. Decrement d6 (LEN counter) and repeat the loop until zero.
+|
+| Implementation Notes:
+|
+| The registers are used as follows:
+|
+| d0: LEN counter
+| d1: temp used to form the digit
+| d2: upper 32-bits of fraction for mul by 8
+| d3: lower 32-bits of fraction for mul by 8
+| d4: upper 32-bits of fraction for mul by 2
+| d5: lower 32-bits of fraction for mul by 2
+| d6: temp for bit-field extracts
+| d7: byte digit formation word;digit count {0,1}
+| a0: pointer into memory for packed bcd string formation
+|
+
+| Copyright (C) Motorola, Inc. 1990
+| All Rights Reserved
+|
+| For details on the license for this file, please see the
+| file, README, in this same directory.
+
+|BINSTR idnt 2,1 | Motorola 040 Floating Point Software Package
+
+ |section 8
+
+#include "fpsp.h"
+
+ .global binstr
+binstr:
+ moveml %d0-%d7,-(%a7)
+|
+| A1: Init d7
+|
+ moveql #1,%d7 |init d7 for second digit
+ subql #1,%d0 |for dbf d0 would have LEN+1 passes
+|
+| A2. Copy d2:d3 to d4:d5. Start loop.
+|
+loop:
+ movel %d2,%d4 |copy the fraction before muls
+ movel %d3,%d5 |to d4:d5
+|
+| A3. Multiply d2:d3 by 8; extract msbs into d1.
+|
+ bfextu %d2{#0:#3},%d1 |copy 3 msbs of d2 into d1
+ asll #3,%d2 |shift d2 left by 3 places
+ bfextu %d3{#0:#3},%d6 |copy 3 msbs of d3 into d6
+ asll #3,%d3 |shift d3 left by 3 places
+ orl %d6,%d2 |or in msbs from d3 into d2
+|
+| A4. Multiply d4:d5 by 2; add carry out to d1.
+|
+ asll #1,%d5 |mul d5 by 2
+ roxll #1,%d4 |mul d4 by 2
+ swap %d6 |put 0 in d6 lower word
+ addxw %d6,%d1 |add in extend from mul by 2
+|
+| A5. Add mul by 8 to mul by 2. D1 contains the digit formed.
+|
+ addl %d5,%d3 |add lower 32 bits
+ nop |ERRATA ; FIX #13 (Rev. 1.2 6/6/90)
+ addxl %d4,%d2 |add with extend upper 32 bits
+ nop |ERRATA ; FIX #13 (Rev. 1.2 6/6/90)
+ addxw %d6,%d1 |add in extend from add to d1
+ swap %d6 |with d6 = 0; put 0 in upper word
+|
+| A6. Test d7 and branch.
+|
+ tstw %d7 |if zero, store digit & to loop
+ beqs first_d |if non-zero, form byte & write
+sec_d:
+ swap %d7 |bring first digit to word d7b
+ aslw #4,%d7 |first digit in upper 4 bits d7b
+ addw %d1,%d7 |add in ls digit to d7b
+ moveb %d7,(%a0)+ |store d7b byte in memory
+ swap %d7 |put LEN counter in word d7a
+ clrw %d7 |set d7a to signal no digits done
+ dbf %d0,loop |do loop some more!
+ bras end_bstr |finished, so exit
+first_d:
+ swap %d7 |put digit word in d7b
+ movew %d1,%d7 |put new digit in d7b
+ swap %d7 |put LEN counter in word d7a
+ addqw #1,%d7 |set d7a to signal first digit done
+ dbf %d0,loop |do loop some more!
+ swap %d7 |put last digit in string
+ lslw #4,%d7 |move it to upper 4 bits
+ moveb %d7,(%a0)+ |store it in memory string
+|
+| Clean up and return with result in fp0.
+|
+end_bstr:
+ moveml (%a7)+,%d0-%d7
+ rts
+ |end