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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 /fs/reiserfs/README
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
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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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+[LICENSING]
+
+ReiserFS is hereby licensed under the GNU General
+Public License version 2.
+
+Source code files that contain the phrase "licensing governed by
+reiserfs/README" are "governed files" throughout this file. Governed
+files are licensed under the GPL. The portions of them owned by Hans
+Reiser, or authorized to be licensed by him, have been in the past,
+and likely will be in the future, licensed to other parties under
+other licenses. If you add your code to governed files, and don't
+want it to be owned by Hans Reiser, put your copyright label on that
+code so the poor blight and his customers can keep things straight.
+All portions of governed files not labeled otherwise are owned by Hans
+Reiser, and by adding your code to it, widely distributing it to
+others or sending us a patch, and leaving the sentence in stating that
+licensing is governed by the statement in this file, you accept this.
+It will be a kindness if you identify whether Hans Reiser is allowed
+to license code labeled as owned by you on your behalf other than
+under the GPL, because he wants to know if it is okay to do so and put
+a check in the mail to you (for non-trivial improvements) when he
+makes his next sale. He makes no guarantees as to the amount if any,
+though he feels motivated to motivate contributors, and you can surely
+discuss this with him before or after contributing. You have the
+right to decline to allow him to license your code contribution other
+than under the GPL.
+
+Further licensing options are available for commercial and/or other
+interests directly from Hans Reiser: hans@reiser.to. If you interpret
+the GPL as not allowing those additional licensing options, you read
+it wrongly, and Richard Stallman agrees with me, when carefully read
+you can see that those restrictions on additional terms do not apply
+to the owner of the copyright, and my interpretation of this shall
+govern for this license.
+
+Finally, nothing in this license shall be interpreted to allow you to
+fail to fairly credit me, or to remove my credits, without my
+permission, unless you are an end user not redistributing to others.
+If you have doubts about how to properly do that, or about what is
+fair, ask. (Last I spoke with him Richard was contemplating how best
+to address the fair crediting issue in the next GPL version.)
+
+[END LICENSING]
+
+Reiserfs is a file system based on balanced tree algorithms, which is
+described at https://reiser4.wiki.kernel.org/index.php/Main_Page
+
+Stop reading here. Go there, then return.
+
+Send bug reports to yura@namesys.botik.ru.
+
+mkreiserfs and other utilities are in reiserfs/utils, or wherever your
+Linux provider put them. There is some disagreement about how useful
+it is for users to get their fsck and mkreiserfs out of sync with the
+version of reiserfs that is in their kernel, with many important
+distributors wanting them out of sync.:-) Please try to remember to
+recompile and reinstall fsck and mkreiserfs with every update of
+reiserfs, this is a common source of confusion. Note that some of the
+utilities cannot be compiled without accessing the balancing code
+which is in the kernel code, and relocating the utilities may require
+you to specify where that code can be found.
+
+Yes, if you update your reiserfs kernel module you do have to
+recompile your kernel, most of the time. The errors you get will be
+quite cryptic if your forget to do so.
+
+Real users, as opposed to folks who want to hack and then understand
+what went wrong, will want REISERFS_CHECK off.
+
+Hideous Commercial Pitch: Spread your development costs across other OS
+vendors. Select from the best in the world, not the best in your
+building, by buying from third party OS component suppliers. Leverage
+the software component development power of the internet. Be the most
+aggressive in taking advantage of the commercial possibilities of
+decentralized internet development, and add value through your branded
+integration that you sell as an operating system. Let your competitors
+be the ones to compete against the entire internet by themselves. Be
+hip, get with the new economic trend, before your competitors do. Send
+email to hans@reiser.to.
+
+To understand the code, after reading the website, start reading the
+code by reading reiserfs_fs.h first.
+
+Hans Reiser was the project initiator, primary architect, source of all
+funding for the first 5.5 years, and one of the programmers. He owns
+the copyright.
+
+Vladimir Saveljev was one of the programmers, and he worked long hours
+writing the cleanest code. He always made the effort to be the best he
+could be, and to make his code the best that it could be. What resulted
+was quite remarkable. I don't think that money can ever motivate someone
+to work the way he did, he is one of the most selfless men I know.
+
+Yura helps with benchmarking, coding hashes, and block pre-allocation
+code.
+
+Anatoly Pinchuk is a former member of our team who worked closely with
+Vladimir throughout the project's development. He wrote a quite
+substantial portion of the total code. He realized that there was a
+space problem with packing tails of files for files larger than a node
+that start on a node aligned boundary (there are reasons to want to node
+align files), and he invented and implemented indirect items and
+unformatted nodes as the solution.
+
+Konstantin Shvachko, with the help of the Russian version of a VC,
+tried to put me in a position where I was forced into giving control
+of the project to him. (Fortunately, as the person paying the money
+for all salaries from my dayjob I owned all copyrights, and you can't
+really force takeovers of sole proprietorships.) This was something
+curious, because he never really understood the value of our project,
+why we should do what we do, or why innovation was possible in
+general, but he was sure that he ought to be controlling it. Every
+innovation had to be forced past him while he was with us. He added
+two years to the time required to complete reiserfs, and was a net
+loss for me. Mikhail Gilula was a brilliant innovator who also left
+in a destructive way that erased the value of his contributions, and
+that he was shown much generosity just makes it more painful.
+
+Grigory Zaigralin was an extremely effective system administrator for
+our group.
+
+Igor Krasheninnikov was wonderful at hardware procurement, repair, and
+network installation.
+
+Jeremy Fitzhardinge wrote the teahash.c code, and he gives credit to a
+textbook he got the algorithm from in the code. Note that his analysis
+of how we could use the hashing code in making 32 bit NFS cookies work
+was probably more important than the actual algorithm. Colin Plumb also
+contributed to it.
+
+Chris Mason dived right into our code, and in just a few months produced
+the journaling code that dramatically increased the value of ReiserFS.
+He is just an amazing programmer.
+
+Igor Zagorovsky is writing much of the new item handler and extent code
+for our next major release.
+
+Alexander Zarochentcev (sometimes known as zam, or sasha), wrote the
+resizer, and is hard at work on implementing allocate on flush. SGI
+implemented allocate on flush before us for XFS, and generously took
+the time to convince me we should do it also. They are great people,
+and a great company.
+
+Yuri Shevchuk and Nikita Danilov are doing squid cache optimization.
+
+Vitaly Fertman is doing fsck.
+
+Jeff Mahoney, of SuSE, contributed a few cleanup fixes, most notably
+the endian safe patches which allow ReiserFS to run on any platform
+supported by the Linux kernel.
+
+SuSE, IntegratedLinux.com, Ecila, MP3.com, bigstorage.com, and the
+Alpha PC Company made it possible for me to not have a day job
+anymore, and to dramatically increase our staffing. Ecila funded
+hypertext feature development, MP3.com funded journaling, SuSE funded
+core development, IntegratedLinux.com funded squid web cache
+appliances, bigstorage.com funded HSM, and the alpha PC company funded
+the alpha port. Many of these tasks were helped by sponsors other
+than the ones just named. SuSE has helped in much more than just
+funding....
+