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2022-05-03mptcp: expose server_side attribute in MPTCP netlink eventsKishen Maloor
This change records the 'server_side' attribute of MPTCP_EVENT_CREATED and MPTCP_EVENT_ESTABLISHED events to inform their recipient about the Client/Server role of the running MPTCP application. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/246 Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Kishen Maloor <kishen.maloor@intel.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-03seccomp: Add wait_killable semantic to seccomp user notifierSargun Dhillon
This introduces a per-filter flag (SECCOMP_FILTER_FLAG_WAIT_KILLABLE_RECV) that makes it so that when notifications are received by the supervisor the notifying process will transition to wait killable semantics. Although wait killable isn't a set of semantics formally exposed to userspace, the concept is searchable. If the notifying process is signaled prior to the notification being received by the userspace agent, it will be handled as normal. One quirk about how this is handled is that the notifying process only switches to TASK_KILLABLE if it receives a wakeup from either an addfd or a signal. This is to avoid an unnecessary wakeup of the notifying task. The reasons behind switching into wait_killable only after userspace receives the notification are: * Avoiding unncessary work - Often, workloads will perform work that they may abort (request racing comes to mind). This allows for syscalls to be aborted safely prior to the notification being received by the supervisor. In this, the supervisor doesn't end up doing work that the workload does not want to complete anyways. * Avoiding side effects - We don't want the syscall to be interruptible once the supervisor starts doing work because it may not be trivial to reverse the operation. For example, unmounting a file system may take a long time, and it's hard to rollback, or treat that as reentrant. * Avoid breaking runtimes - Various runtimes do not GC when they are during a syscall (or while running native code that subsequently calls a syscall). If many notifications are blocked, and not picked up by the supervisor, this can get the application into a bad state. Signed-off-by: Sargun Dhillon <sargun@sargun.me> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20220503080958.20220-2-sargun@sargun.me
2022-05-01Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull kvm fixes from Paolo Bonzini: "ARM: - Take care of faults occuring between the PARange and IPA range by injecting an exception - Fix S2 faults taken from a host EL0 in protected mode - Work around Oops caused by a PMU access from a 32bit guest when PMU has been created. This is a temporary bodge until we fix it for good. x86: - Fix potential races when walking host page table - Fix shadow page table leak when KVM runs nested - Work around bug in userspace when KVM synthesizes leaf 0x80000021 on older (pre-EPYC) or Intel processors Generic (but affects only RISC-V): - Fix bad user ABI for KVM_EXIT_SYSTEM_EVENT" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: work around QEMU issue with synthetic CPUID leaves Revert "x86/mm: Introduce lookup_address_in_mm()" KVM: x86/mmu: fix potential races when walking host page table KVM: fix bad user ABI for KVM_EXIT_SYSTEM_EVENT KVM: x86/mmu: Do not create SPTEs for GFNs that exceed host.MAXPHYADDR KVM: arm64: Inject exception on out-of-IPA-range translation fault KVM/arm64: Don't emulate a PMU for 32-bit guests if feature not set KVM: arm64: Handle host stage-2 faults from 32-bit EL0
2022-05-01net: phy: Add 10BASE-T1L support in phy-c45Alexandru Tachici
This patch is needed because the BASE-T1 uses different registers for status, control and advertisement to those already employed in the existing phy-c45 functions. Where required, genphy_c45 functions will now check whether the device supports BASE-T1 and use the specific registers instead: 45.2.7.19 BASE-T1 AN control register, 45.2.7.20 BASE-T1 AN status, 45.2.7.21 BASE-T1 AN advertisement register, 45.2.7.22 BASE-T1 AN LP Base Page ability register, 45.2.1.185 BASE-T1 PMA/PMD control register. Tested-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-05-01net: phy: Add BaseT1 auto-negotiation registersAlexandru Tachici
Added BASE-T1 AN advertisement register (Registers 7.514, 7.515, and 7.516) and BASE-T1 AN LP Base Page ability register (Registers 7.517, 7.518, and 7.519). Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-05-01net: phy: Add 10-BaseT1L registersAlexandru Tachici
The 802.3gc specification defines the 10-BaseT1L link mode for ethernet trafic on twisted wire pair. PMA status register can be used to detect if the phy supports 2.4 V TX level and PCS control register can be used to enable/disable PCS level loopback. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-05-01ethtool: Add 10base-T1L link mode entryAlexandru Tachici
Add entry for the 10base-T1L full duplex mode. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-30io_uring: add IORING_SETUP_TASKRUN_FLAGJens Axboe
If IORING_SETUP_COOP_TASKRUN is set to use cooperative scheduling for running task_work, then IORING_SETUP_TASKRUN_FLAG can be set so the application can tell if task_work is pending in the kernel for this ring. This allows use cases like io_uring_peek_cqe() to still function appropriately, or for the task to know when it would be useful to call io_uring_wait_cqe() to run pending events. Reviewed-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/20220426014904.60384-7-axboe@kernel.dk Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-30io_uring: use TWA_SIGNAL_NO_IPI if IORING_SETUP_COOP_TASKRUN is usedJens Axboe
If this is set, io_uring will never use an IPI to deliver a task_work notification. This can be used in the common case where a single task or thread communicates with the ring, and doesn't rely on io_uring_cqe_peek(). This provides a noticeable win in performance, both from eliminating the IPI itself, but also from avoiding interrupting the submitting task unnecessarily. Reviewed-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/20220426014904.60384-6-axboe@kernel.dk Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-29io_uring: return hint on whether more data is available after receiveJens Axboe
For now just use a CQE flag for this, with big CQE support we could return the actual number of bytes left. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-29Merge branch 'for-5.19/io_uring-socket' into for-5.19/io_uring-netJens Axboe
* for-5.19/io_uring-socket: (73 commits) io_uring: use the text representation of ops in trace io_uring: rename op -> opcode io_uring: add io_uring_get_opcode io_uring: add type to op enum io_uring: add socket(2) support net: add __sys_socket_file() io_uring: fix trace for reduced sqe padding io_uring: add fgetxattr and getxattr support io_uring: add fsetxattr and setxattr support fs: split off do_getxattr from getxattr fs: split off setxattr_copy and do_setxattr function from setxattr io_uring: return an error when cqe is dropped io_uring: use constants for cq_overflow bitfield io_uring: rework io_uring_enter to simplify return value io_uring: trace cqe overflows io_uring: add trace support for CQE overflow io_uring: allow re-poll if we made progress io_uring: support MSG_WAITALL for IORING_OP_SEND(MSG) io_uring: add support for IORING_ASYNC_CANCEL_ANY io_uring: allow IORING_OP_ASYNC_CANCEL with 'fd' key ...
2022-04-29taskstats: version 12 with thread group and exe infoDr. Thomas Orgis
The task exit struct needs some crucial information to be able to provide an enhanced version of process and thread accounting. This change provides: 1. ac_tgid in additon to ac_pid 2. thread group execution walltime in ac_tgetime 3. flag AGROUP in ac_flag to indicate the last task in a thread group / process 4. device ID and inode of task's /proc/self/exe in ac_exe_dev and ac_exe_inode 5. tools/accounting/procacct as demonstrator When a task exits, taskstats are reported to userspace including the task's pid and ppid, but without the id of the thread group this task is part of. Without the tgid, the stats of single tasks cannot be correlated to each other as a thread group (process). The taskstats documentation suggests that on process exit a data set consisting of accumulated stats for the whole group is produced. But such an additional set of stats is only produced for actually multithreaded processes, not groups that had only one thread, and also those stats only contain data about delay accounting and not the more basic information about CPU and memory resource usage. Adding the AGROUP flag to be set when the last task of a group exited enables determination of process end also for single-threaded processes. My applicaton basically does enhanced process accounting with summed cputime, biggest maxrss, tasks per process. The data is not available with the traditional BSD process accounting (which is not designed to be extensible) and the taskstats interface allows more efficient on-the-fly grouping and summing of the stats, anyway, without intermediate disk writes. Furthermore, I do carry statistics on which exact program binary is used how often with associated resources, getting a picture on how important which parts of a collection of installed scientific software in different versions are, and how well they put load on the machine. This is enabled by providing information on /proc/self/exe for each task. I assume the two 64-bit fields for device ID and inode are more appropriate than the possibly large resolved path to keep the data volume down. Add the tgid to the stats to complete task identification, the flag AGROUP to mark the last task of a group, the group wallclock time, and inode-based identification of the associated executable file. Add tools/accounting/procacct.c as a simplified fork of getdelays.c to demonstrate process and thread accounting. [thomas.orgis@uni-hamburg.de: fix version number in comment] Link: https://lkml.kernel.org/r/20220405003601.7a5f6008@plasteblaster Link: https://lkml.kernel.org/r/20220331004106.64e5616b@plasteblaster Signed-off-by: Dr. Thomas Orgis <thomas.orgis@uni-hamburg.de> Reviewed-by: Ismael Luceno <ismael@iodev.co.uk> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: xu xin <xu.xin16@zte.com.cn> Cc: Yang Yang <yang.yang29@zte.com.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-04-29Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fix from Will Deacon: "Rename and reallocate the PT_ARM_MEMTAG_MTE ELF segment type. This is a fix to the MTE ELF ABI for a bug that was added during the most recent merge window as part of the coredump support. The issue is that the value assigned to the new PT_ARM_MEMTAG_MTE segment type has already been allocated to PT_AARCH64_UNWIND by the ELF ABI, so we've bumped the value and changed the name of the identifier to be better aligned with the existing one" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: elf: Fix the arm64 MTE ELF segment name and value
2022-04-29Merge branch 'kvm-fixes-for-5.18-rc5' into HEADPaolo Bonzini
Fixes for (relatively) old bugs, to be merged in both the -rc and next development trees. The merge reconciles the ABI fixes for KVM_EXIT_SYSTEM_EVENT between 5.18 and commit c24a950ec7d6 ("KVM, SEV: Add KVM_EXIT_SHUTDOWN metadata for SEV-ES", 2022-04-13).
2022-04-29Merge branch 'kvm-fixes-for-5.18-rc5' into HEADPaolo Bonzini
Fixes for (relatively) old bugs, to be merged in both the -rc and next development trees: * Fix potential races when walking host page table * Fix bad user ABI for KVM_EXIT_SYSTEM_EVENT * Fix shadow page table leak when KVM runs nested
2022-04-29KVM: fix bad user ABI for KVM_EXIT_SYSTEM_EVENTPaolo Bonzini
When KVM_EXIT_SYSTEM_EVENT was introduced, it included a flags member that at the time was unused. Unfortunately this extensibility mechanism has several issues: - x86 is not writing the member, so it would not be possible to use it on x86 except for new events - the member is not aligned to 64 bits, so the definition of the uAPI struct is incorrect for 32- on 64-bit userspace. This is a problem for RISC-V, which supports CONFIG_KVM_COMPAT, but fortunately usage of flags was only introduced in 5.18. Since padding has to be introduced, place a new field in there that tells if the flags field is valid. To allow further extensibility, in fact, change flags to an array of 16 values, and store how many of the values are valid. The availability of the new ndata field is tied to a system capability; all architectures are changed to fill in the field. To avoid breaking compilation of userspace that was using the flags field, provide a userspace-only union to overlap flags with data[0]. The new field is placed at the same offset for both 32- and 64-bit userspace. Cc: Will Deacon <will@kernel.org> Cc: Marc Zyngier <maz@kernel.org> Cc: Peter Gonda <pgonda@google.com> Cc: Sean Christopherson <seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reported-by: kernel test robot <lkp@intel.com> Message-Id: <20220422103013.34832-1-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
include/linux/netdevice.h net/core/dev.c 6510ea973d8d ("net: Use this_cpu_inc() to increment net->core_stats") 794c24e9921f ("net-core: rx_otherhost_dropped to core_stats") https://lore.kernel.org/all/20220428111903.5f4304e0@canb.auug.org.au/ drivers/net/wan/cosa.c d48fea8401cf ("net: cosa: fix error check return value of register_chrdev()") 89fbca3307d4 ("net: wan: remove support for COSA and SRP synchronous serial boards") https://lore.kernel.org/all/20220428112130.1f689e5e@canb.auug.org.au/ Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-04-28elf: Fix the arm64 MTE ELF segment name and valueCatalin Marinas
Unfortunately, the name/value choice for the MTE ELF segment type (PT_ARM_MEMTAG_MTE) was pretty poor: LOPROC+1 is already in use by PT_AARCH64_UNWIND, as defined in the AArch64 ELF ABI (https://github.com/ARM-software/abi-aa/blob/main/aaelf64/aaelf64.rst). Update the ELF segment type value to LOPROC+2 and also change the define to PT_AARCH64_MEMTAG_MTE to match the AArch64 ELF ABI namespace. The AArch64 ELF ABI document is updating accordingly (segment type not previously mentioned in the document). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Fixes: 761b9b366cec ("elf: Introduce the ARM MTE ELF segment type") Cc: Will Deacon <will@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Kees Cook <keescook@chromium.org> Cc: Luis Machado <luis.machado@arm.com> Cc: Richard Earnshaw <Richard.Earnshaw@arm.com> Link: https://lore.kernel.org/r/20220425151833.2603830-1-catalin.marinas@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-04-27Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextJakub Kicinski
Daniel Borkmann says: ==================== pull-request: bpf-next 2022-04-27 We've added 85 non-merge commits during the last 18 day(s) which contain a total of 163 files changed, 4499 insertions(+), 1521 deletions(-). The main changes are: 1) Teach libbpf to enhance BPF verifier log with human-readable and relevant information about failed CO-RE relocations, from Andrii Nakryiko. 2) Add typed pointer support in BPF maps and enable it for unreferenced pointers (via probe read) and referenced ones that can be passed to in-kernel helpers, from Kumar Kartikeya Dwivedi. 3) Improve xsk to break NAPI loop when rx queue gets full to allow for forward progress to consume descriptors, from Maciej Fijalkowski & Björn Töpel. 4) Fix a small RCU read-side race in BPF_PROG_RUN routines which dereferenced the effective prog array before the rcu_read_lock, from Stanislav Fomichev. 5) Implement BPF atomic operations for RV64 JIT, and add libbpf parsing logic for USDT arguments under riscv{32,64}, from Pu Lehui. 6) Implement libbpf parsing of USDT arguments under aarch64, from Alan Maguire. 7) Enable bpftool build for musl and remove nftw with FTW_ACTIONRETVAL usage so it can be shipped under Alpine which is musl-based, from Dominique Martinet. 8) Clean up {sk,task,inode} local storage trace RCU handling as they do not need to use call_rcu_tasks_trace() barrier, from KP Singh. 9) Improve libbpf API documentation and fix error return handling of various API functions, from Grant Seltzer. 10) Enlarge offset check for bpf_skb_{load,store}_bytes() helpers given data length of frags + frag_list may surpass old offset limit, from Liu Jian. 11) Various improvements to prog_tests in area of logging, test execution and by-name subtest selection, from Mykola Lysenko. 12) Simplify map_btf_id generation for all map types by moving this process to build time with help of resolve_btfids infra, from Menglong Dong. 13) Fix a libbpf bug in probing when falling back to legacy bpf_probe_read*() helpers; the probing caused always to use old helpers, from Runqing Yang. 14) Add support for ARCompact and ARCv2 platforms for libbpf's PT_REGS tracing macros, from Vladimir Isaev. 15) Cleanup BPF selftests to remove old & unneeded rlimit code given kernel switched to memcg-based memory accouting a while ago, from Yafang Shao. 16) Refactor of BPF sysctl handlers to move them to BPF core, from Yan Zhu. 17) Fix BPF selftests in two occasions to work around regressions caused by latest LLVM to unblock CI until their fixes are worked out, from Yonghong Song. 18) Misc cleanups all over the place, from various others. * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (85 commits) selftests/bpf: Add libbpf's log fixup logic selftests libbpf: Fix up verifier log for unguarded failed CO-RE relos libbpf: Simplify bpf_core_parse_spec() signature libbpf: Refactor CO-RE relo human description formatting routine libbpf: Record subprog-resolved CO-RE relocations unconditionally selftests/bpf: Add CO-RE relos and SEC("?...") to linked_funcs selftests libbpf: Avoid joining .BTF.ext data with BPF programs by section name libbpf: Fix logic for finding matching program for CO-RE relocation libbpf: Drop unhelpful "program too large" guess libbpf: Fix anonymous type check in CO-RE logic bpf: Compute map_btf_id during build time selftests/bpf: Add test for strict BTF type check selftests/bpf: Add verifier tests for kptr selftests/bpf: Add C tests for kptr libbpf: Add kptr type tag macros to bpf_helpers.h bpf: Make BTF type match stricter for release arguments bpf: Teach verifier about kptr_get kfunc helpers bpf: Wire up freeing of referenced kptr bpf: Populate pairs of btf_id and destructor kfunc in btf bpf: Adapt copy_map_value for multiple offset case ... ==================== Link: https://lore.kernel.org/r/20220427224758.20976-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-04-27net: atm: remove support for ZeitNet ZN122x ATM devicesJakub Kicinski
This driver received nothing but automated fixes in the last 15 years. Since it's using virt_to_bus it's unlikely to be used on any modern platform. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-26Merge tag 'for-5.18/fbdev-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev Pull fbdev fixes and updates from Helge Deller: "A bunch of outstanding fbdev patches - all trivial and small" * tag 'for-5.18/fbdev-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: video: fbdev: clps711x-fb: Use syscon_regmap_lookup_by_phandle video: fbdev: mmp: replace usage of found with dedicated list iterator variable video: fbdev: sh_mobile_lcdcfb: Remove sh_mobile_lcdc_check_var() declaration video: fbdev: i740fb: Error out if 'pixclock' equals zero video: fbdev: i740fb: use memset_io() to clear screen video: fbdev: s3fb: Error out if 'pixclock' equals zero video: fbdev: arkfb: Error out if 'pixclock' equals zero video: fbdev: tridentfb: Error out if 'pixclock' equals zero video: fbdev: vt8623fb: Error out if 'pixclock' equals zero video: fbdev: kyro: Error out if 'lineclock' equals zero video: fbdev: neofb: Fix the check of 'var->pixclock' video: fbdev: imxfb: Fix missing of_node_put in imxfb_probe video: fbdev: omap: Make it CCF clk API compatible video: fbdev: aty/matrox/...: Prepare cleanup of powerpc's asm/prom.h video: fbdev: pm2fb: Fix a kernel-doc formatting issue linux/fb.h: Spelling s/palette/palette/ video: fbdev: sis: fix potential NULL dereference in sisfb_post_sis300() video: fbdev: pxafb: use if else instead video: fbdev: udlfb: properly check endpoint type video: fbdev: of: display_timing: Remove a redundant zeroing of memory
2022-04-26io_uring: add type to op enumDylan Yudaken
It is useful to have a type enum for opcodes, to allow the compiler to assert that every value is used in a switch statement. Signed-off-by: Dylan Yudaken <dylany@fb.com> Link: https://lore.kernel.org/r/20220426082907.3600028-2-dylany@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-26tee: remove flags TEE_IOCTL_SHM_MAPPED and TEE_IOCTL_SHM_DMA_BUFAndrew Davis
These look to be leftover from an early edition of this driver. Userspace does not need this information. Checking all users of this that I have access to I have verified no one is using them. They leak internal use flags out to userspace. Even more they are not correct anymore after a45ea4efa358. Lets drop these flags before someone does try to use them for something and they become ABI. Signed-off-by: Andrew Davis <afd@ti.com> Acked-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2022-04-25bpf: Allow storing referenced kptr in mapKumar Kartikeya Dwivedi
Extending the code in previous commits, introduce referenced kptr support, which needs to be tagged using 'kptr_ref' tag instead. Unlike unreferenced kptr, referenced kptr have a lot more restrictions. In addition to the type matching, only a newly introduced bpf_kptr_xchg helper is allowed to modify the map value at that offset. This transfers the referenced pointer being stored into the map, releasing the references state for the program, and returning the old value and creating new reference state for the returned pointer. Similar to unreferenced pointer case, return value for this case will also be PTR_TO_BTF_ID_OR_NULL. The reference for the returned pointer must either be eventually released by calling the corresponding release function, otherwise it must be transferred into another map. It is also allowed to call bpf_kptr_xchg with a NULL pointer, to clear the value, and obtain the old value if any. BPF_LDX, BPF_STX, and BPF_ST cannot access referenced kptr. A future commit will permit using BPF_LDX for such pointers, but attempt at making it safe, since the lifetime of object won't be guaranteed. There are valid reasons to enforce the restriction of permitting only bpf_kptr_xchg to operate on referenced kptr. The pointer value must be consistent in face of concurrent modification, and any prior values contained in the map must also be released before a new one is moved into the map. To ensure proper transfer of this ownership, bpf_kptr_xchg returns the old value, which the verifier would require the user to either free or move into another map, and releases the reference held for the pointer being moved in. In the future, direct BPF_XCHG instruction may also be permitted to work like bpf_kptr_xchg helper. Note that process_kptr_func doesn't have to call check_helper_mem_access, since we already disallow rdonly/wronly flags for map, which is what check_map_access_type checks, and we already ensure the PTR_TO_MAP_VALUE refers to kptr by obtaining its off_desc, so check_map_access is also not required. Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20220424214901.2743946-4-memxor@gmail.com
2022-04-25fanotify: implement "evictable" inode marksAmir Goldstein
When an inode mark is created with flag FAN_MARK_EVICTABLE, it will not pin the marked inode to inode cache, so when inode is evicted from cache due to memory pressure, the mark will be lost. When an inode mark with flag FAN_MARK_EVICATBLE is updated without using this flag, the marked inode is pinned to inode cache. When an inode mark is updated with flag FAN_MARK_EVICTABLE but an existing mark already has the inode pinned, the mark update fails with error EEXIST. Evictable inode marks can be used to setup inode marks with ignored mask to suppress events from uninteresting files or directories in a lazy manner, upon receiving the first event, without having to iterate all the uninteresting files or directories before hand. The evictbale inode mark feature allows performing this lazy marks setup without exhausting the system memory with pinned inodes. This change does not enable the feature yet. Link: https://lore.kernel.org/linux-fsdevel/CAOQ4uxiRDpuS=2uA6+ZUM7yG9vVU-u212tkunBmSnP_u=mkv=Q@mail.gmail.com/ Link: https://lore.kernel.org/r/20220422120327.3459282-15-amir73il@gmail.com Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
2022-04-25PCI: Add PCI_EXP_SLTCTL_ASPL_DISABLE macroPali Rohár
Add macro defining Auto Slot Power Limit Disable bit in Slot Control Register. Link: https://lore.kernel.org/r/20220412094946.27069-2-pali@kernel.org Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2022-04-25devlink: introduce line card info get messageJiri Pirko
Allow the driver to provide per line card info get op to fill-up info, similar to the "devlink dev info". Example: $ devlink lc info pci/0000:01:00.0 lc 8 pci/0000:01:00.0: lc 8 versions: fixed: hw.revision 0 running: ini.version 4 Signed-off-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-25devlink: introduce line card devices supportJiri Pirko
Line card can contain one or more devices that makes sense to make visible to the user. For example, this can be a gearbox with flash memory, which could be updated. Provide the driver possibility to attach such devices to a line card and expose those to user. Example: $ devlink lc show pci/0000:01:00.0 lc 8 pci/0000:01:00.0: lc 8 state active type 16x100G supported_types: 16x100G devices: device 0 device 1 device 2 device 3 Signed-off-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-24io_uring: add socket(2) supportJens Axboe
Supports both regular socket(2) where a normal file descriptor is instantiated when called, or direct descriptors. Link: https://lore.kernel.org/r/20220412202240.234207-3-axboe@kernel.dk Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: add fgetxattr and getxattr supportStefan Roesch
This adds support to io_uring for the fgetxattr and getxattr API. Signed-off-by: Stefan Roesch <shr@fb.com> Acked-by: Christian Brauner <brauner@kernel.org> Link: https://lore.kernel.org/r/20220323154420.3301504-5-shr@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: add fsetxattr and setxattr supportStefan Roesch
This adds support to io_uring for the fsetxattr and setxattr API. Signed-off-by: Stefan Roesch <shr@fb.com> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Link: https://lore.kernel.org/r/20220323154420.3301504-4-shr@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: add support for IORING_ASYNC_CANCEL_ANYJens Axboe
Rather than match on a specific key, be it user_data or file, allow canceling any request that we can lookup. Works like IORING_ASYNC_CANCEL_ALL in that it cancels multiple requests, but it doesn't key off user_data or the file. Can't be set with IORING_ASYNC_CANCEL_FD, as that's a key selector. Only one may be used at the time. Signed-off-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20220418164402.75259-6-axboe@kernel.dk Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: allow IORING_OP_ASYNC_CANCEL with 'fd' keyJens Axboe
Currently sqe->addr must contain the user_data of the request being canceled. Introduce the IORING_ASYNC_CANCEL_FD flag, which tells the kernel that we're keying off the file fd instead for cancelation. This allows canceling any request that a) uses a file, and b) was assigned the file based on the value being passed in. Signed-off-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20220418164402.75259-5-axboe@kernel.dk
2022-04-24io_uring: add support for IORING_ASYNC_CANCEL_ALLJens Axboe
The current cancelation will lookup and cancel the first request it finds based on the key passed in. Add a flag that allows to cancel any request that matches they key. It completes with the number of requests found and canceled, or res < 0 if an error occured. Signed-off-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20220418164402.75259-4-axboe@kernel.dk
2022-04-24media: v4l2-ctrls: Add intra-refresh type controlDikshita Agarwal
Add a control to set intra-refresh type. Signed-off-by: Dikshita Agarwal <quic_dikshita@quicinc.com> Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-04-24media: v4l: Add Qualcomm custom compressed pixel formatsStanimir Varbanov
Add custom Qualcomm raw compressed pixel formats. They are used in Qualcomm SoCs to optimize the interconnect bandwidth. Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-04-24media: media.h: remove unneeded <stdint.h> inclusionMasahiro Yamada
Commit b3b7a9f138b7 ("[media] media-device: Use u64 ints for pointers") added this #include <stdint.h>, presumably in order to use uintptr_t. Now that it is gone, we can compile this for userspace without <stdint.h>. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-04-24media: media.h: Add new media link typeDaniel Scally
To describe in the kernel the connection between devices and their supporting peripherals (for example, a camera sensor and the vcm driving the focusing lens for it), add a new type of media link to introduce the concept of these ancillary links. Add some elements to the uAPI documentation to explain the new link type, their purpose and some aspects of their current implementation. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Scally <djrscally@gmail.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-04-24media: cec.h: add cec_msg_recv_is_rx/tx_result helpersHans Verkuil
These two helper functions return true if the received message contains the result of a previous non-blocking transmit. Either the tx_status result (cec_msg_recv_is_tx_result) of the transmit, or the rx_status result (cec_msg_recv_is_rx_result) of the reply to the original transmit. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-04-23Merge tag 'input-for-v5.18-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input fixes from Dmitry Torokhov: - a new set of keycodes to be used by marine navigation systems - minor fixes to omap4-keypad and cypress-sf drivers * tag 'input-for-v5.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: add Marine Navigation Keycodes Input: omap4-keypad - fix pm_runtime_get_sync() error checking Input: cypress-sf - register a callback to disable the regulators
2022-04-22cxl/mbox: Use type __u32 for mailbox payload sizesAlison Schofield
Payload sizes for mailbox commands are expected to be positive values coming from userspace. The documentation correctly describes these as always unsigned values. The mailbox and send structures that support the mailbox commands however, use __s32 types for the payloads. Replace __s32 with __u32 in the mailbox and send command structures and update usages. Kernel users of the interface already block all negative values and there is no known ability for userspace to have grown a dependency on submitting negative values to the kernel. The known user of the IOCTL, the CXL command line interface (cxl-cli) already enforces positive size values. A Smatch warning of a signedness uncovered this issue. Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alison Schofield <alison.schofield@intel.com> Link: https://lore.kernel.org/r/20220414051246.1244575-1-alison.schofield@intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2022-04-22arm64/sme: Add ptrace support for ZAMark Brown
The ZA array can be read and written with the NT_ARM_ZA. Similarly to our interface for the SVE vector registers the regset consists of a header with information on the current vector length followed by an optional register data payload, represented as for signals as a series of horizontal vectors from 0 to VL/8 in the endianness independent format used for vectors. On get if ZA is enabled then register data will be provided, otherwise it will be omitted. On set if register data is provided then ZA is enabled and initialized using the provided data, otherwise it is disabled. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20220419112247.711548-22-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-04-22arm64/sme: Implement ptrace support for streaming mode SVE registersMark Brown
The streaming mode SVE registers are represented using the same data structures as for SVE but since the vector lengths supported and in use may not be the same as SVE we represent them with a new type NT_ARM_SSVE. Unfortunately we only have a single 16 bit reserved field available in the header so there is no space to fit the current and maximum vector length for both standard and streaming SVE mode without redefining the structure in a way the creates a complicatd and fragile ABI. Since FFR is not present in streaming mode it is read and written as zero. Setting NT_ARM_SSVE registers will put the task into streaming mode, similarly setting NT_ARM_SVE registers will exit it. Reads that do not correspond to the current mode of the task will return the header with no register data. For compatibility reasons on write setting no flag for the register type will be interpreted as setting SVE registers, though users can provide no register data as an alternative mechanism for doing so. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20220419112247.711548-21-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-04-22arm64/sme: Implement vector length configuration prctl()sMark Brown
As for SVE provide a prctl() interface which allows processes to configure their SME vector length. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20220419112247.711548-12-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-04-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netPaolo Abeni
drivers/net/ethernet/microchip/lan966x/lan966x_main.c d08ed852560e ("net: lan966x: Make sure to release ptp interrupt") c8349639324a ("net: lan966x: Add FDMA functionality") Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-04-20net/sched: flower: Add number of vlan tags filterBoris Sukholitko
These are bookkeeping parts of the new num_of_vlans filter. Defines, dump, load and set are being done here. Signed-off-by: Boris Sukholitko <boris.sukholitko@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-19spi: add SPI_RX_CPHA_FLIP mode bitBaruch Siach
Some SPI devices latch MOSI bits on one clock phase, but produce valid MISO bits on the other phase. Add SPI_RX_CPHA_FLIP mode to instruct the controller driver to flip CPHA for Rx (MISO) only transfers. Signed-off-by: Baruch Siach <baruch.siach@siklu.com> Link: https://lore.kernel.org/r/a715ca92713ca02071f33dcca9960a66a03c949a.1649702729.git.baruch@tkos.co.il Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19net: sched: support hash selecting tx queueTonghao Zhang
This patch allows users to pick queue_mapping, range from A to B. Then we can load balance packets from A to B tx queue. The range is an unsigned 16bit value in decimal format. $ tc filter ... action skbedit queue_mapping skbhash A B "skbedit queue_mapping QUEUE_MAPPING" (from "man 8 tc-skbedit") is enhanced with flags: SKBEDIT_F_TXQ_SKBHASH +----+ +----+ +----+ | P1 | | P2 | | Pn | +----+ +----+ +----+ | | | +-----------+-----------+ | | clsact/skbedit | MQ v +-----------+-----------+ | q0 | qn | qm v v v HTB/FQ FIFO ... FIFO For example: If P1 sends out packets to different Pods on other host, and we want distribute flows from qn - qm. Then we can use skb->hash as hash. setup commands: $ NETDEV=eth0 $ ip netns add n1 $ ip link add ipv1 link $NETDEV type ipvlan mode l2 $ ip link set ipv1 netns n1 $ ip netns exec n1 ifconfig ipv1 2.2.2.100/24 up $ tc qdisc add dev $NETDEV clsact $ tc filter add dev $NETDEV egress protocol ip prio 1 \ flower skip_hw src_ip 2.2.2.100 action skbedit queue_mapping skbhash 2 6 $ tc qdisc add dev $NETDEV handle 1: root mq $ tc qdisc add dev $NETDEV parent 1:1 handle 2: htb $ tc class add dev $NETDEV parent 2: classid 2:1 htb rate 100kbit $ tc class add dev $NETDEV parent 2: classid 2:2 htb rate 200kbit $ tc qdisc add dev $NETDEV parent 1:2 tbf rate 100mbit burst 100mb latency 1 $ tc qdisc add dev $NETDEV parent 1:3 pfifo $ tc qdisc add dev $NETDEV parent 1:4 pfifo $ tc qdisc add dev $NETDEV parent 1:5 pfifo $ tc qdisc add dev $NETDEV parent 1:6 pfifo $ tc qdisc add dev $NETDEV parent 1:7 pfifo $ ip netns exec n1 iperf3 -c 2.2.2.1 -i 1 -t 10 -P 10 pick txqueue from 2 - 6: $ ethtool -S $NETDEV | grep -i tx_queue_[0-9]_bytes tx_queue_0_bytes: 42 tx_queue_1_bytes: 0 tx_queue_2_bytes: 11442586444 tx_queue_3_bytes: 7383615334 tx_queue_4_bytes: 3981365579 tx_queue_5_bytes: 3983235051 tx_queue_6_bytes: 6706236461 tx_queue_7_bytes: 42 tx_queue_8_bytes: 0 tx_queue_9_bytes: 0 txqueues 2 - 6 are mapped to classid 1:3 - 1:7 $ tc -s class show dev $NETDEV ... class mq 1:3 root leaf 8002: Sent 11949133672 bytes 7929798 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 class mq 1:4 root leaf 8003: Sent 7710449050 bytes 5117279 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 class mq 1:5 root leaf 8004: Sent 4157648675 bytes 2758990 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 class mq 1:6 root leaf 8005: Sent 4159632195 bytes 2759990 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 class mq 1:7 root leaf 8006: Sent 7003169603 bytes 4646912 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 ... Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Cong Wang <xiyou.wangcong@gmail.com> Cc: Jiri Pirko <jiri@resnulli.us> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Jonathan Lemon <jonathan.lemon@gmail.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Alexander Lobakin <alobakin@pm.me> Cc: Paolo Abeni <pabeni@redhat.com> Cc: Talal Ahmad <talalahmad@google.com> Cc: Kevin Hao <haokexin@gmail.com> Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org> Cc: Kees Cook <keescook@chromium.org> Cc: Kumar Kartikeya Dwivedi <memxor@gmail.com> Cc: Antoine Tenart <atenart@kernel.org> Cc: Wei Wang <weiwan@google.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-04-18devlink: implement line card active stateJiri Pirko
Allow driver to mark a line card as active. Expose this state to the userspace over devlink netlink interface with proper notifications. 'active' state means that line card was plugged in after being provisioned. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-18devlink: implement line card provisioningJiri Pirko
In order to be able to configure all needed stuff on a port/netdevice of a line card without the line card being present, introduce line card provisioning. Basically by setting a type, provisioning process will start and driver is supposed to create a placeholder for instances (ports/netdevices) for a line card type. Allow the user to query the supported line card types over line card get command. Then implement two netlink command SET to allow user to set/unset the card type. On the driver API side, add provision/unprovision ops and supported types array to be advertised. Upon provision op call, the driver should take care of creating the instances for the particular line card type. Introduce provision_set/clear() functions to be called by the driver once the provisioning/unprovisioning is done on its side. These helpers are not to be called directly due to the async nature of provisioning. Example: $ devlink port # No ports are listed $ devlink lc pci/0000:01:00.0: lc 1 state unprovisioned supported_types: 16x100G lc 2 state unprovisioned supported_types: 16x100G lc 3 state unprovisioned supported_types: 16x100G lc 4 state unprovisioned supported_types: 16x100G lc 5 state unprovisioned supported_types: 16x100G lc 6 state unprovisioned supported_types: 16x100G lc 7 state unprovisioned supported_types: 16x100G lc 8 state unprovisioned supported_types: 16x100G $ devlink lc set pci/0000:01:00.0 lc 8 type 16x100G $ devlink lc show pci/0000:01:00.0 lc 8 pci/0000:01:00.0: lc 8 state active type 16x100G supported_types: 16x100G $ devlink port pci/0000:01:00.0/0: type notset flavour cpu port 0 splittable false pci/0000:01:00.0/53: type eth netdev enp1s0nl8p1 flavour physical lc 8 port 1 splittable true lanes 4 pci/0000:01:00.0/54: type eth netdev enp1s0nl8p2 flavour physical lc 8 port 2 splittable true lanes 4 pci/0000:01:00.0/55: type eth netdev enp1s0nl8p3 flavour physical lc 8 port 3 splittable true lanes 4 pci/0000:01:00.0/56: type eth netdev enp1s0nl8p4 flavour physical lc 8 port 4 splittable true lanes 4 pci/0000:01:00.0/57: type eth netdev enp1s0nl8p5 flavour physical lc 8 port 5 splittable true lanes 4 pci/0000:01:00.0/58: type eth netdev enp1s0nl8p6 flavour physical lc 8 port 6 splittable true lanes 4 pci/0000:01:00.0/59: type eth netdev enp1s0nl8p7 flavour physical lc 8 port 7 splittable true lanes 4 pci/0000:01:00.0/60: type eth netdev enp1s0nl8p8 flavour physical lc 8 port 8 splittable true lanes 4 pci/0000:01:00.0/61: type eth netdev enp1s0nl8p9 flavour physical lc 8 port 9 splittable true lanes 4 pci/0000:01:00.0/62: type eth netdev enp1s0nl8p10 flavour physical lc 8 port 10 splittable true lanes 4 pci/0000:01:00.0/63: type eth netdev enp1s0nl8p11 flavour physical lc 8 port 11 splittable true lanes 4 pci/0000:01:00.0/64: type eth netdev enp1s0nl8p12 flavour physical lc 8 port 12 splittable true lanes 4 pci/0000:01:00.0/125: type eth netdev enp1s0nl8p13 flavour physical lc 8 port 13 splittable true lanes 4 pci/0000:01:00.0/126: type eth netdev enp1s0nl8p14 flavour physical lc 8 port 14 splittable true lanes 4 pci/0000:01:00.0/127: type eth netdev enp1s0nl8p15 flavour physical lc 8 port 15 splittable true lanes 4 pci/0000:01:00.0/128: type eth netdev enp1s0nl8p16 flavour physical lc 8 port 16 splittable true lanes 4 $ devlink lc set pci/0000:01:00.0 lc 8 notype Signed-off-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit (git 2.34.1) at 2025-09-14 13:45:45 +0000