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2021-12-02bpf: Add bpf_core_add_cands() and wire it into bpf_core_apply_relo_insn().Alexei Starovoitov
Given BPF program's BTF root type name perform the following steps: . search in vmlinux candidate cache. . if (present in cache and candidate list >= 1) return candidate list. . do a linear search through kernel BTFs for possible candidates. . regardless of number of candidates found populate vmlinux cache. . if (candidate list >= 1) return candidate list. . search in module candidate cache. . if (present in cache) return candidate list (even if list is empty). . do a linear search through BTFs of all kernel modules collecting candidates from all of them. . regardless of number of candidates found populate module cache. . return candidate list. Then wire the result into bpf_core_apply_relo_insn(). When BPF program is trying to CO-RE relocate a type that doesn't exist in either vmlinux BTF or in modules BTFs these steps will perform 2 cache lookups when cache is hit. Note the cache doesn't prevent the abuse by the program that might have lots of relocations that cannot be resolved. Hence cond_resched(). CO-RE in the kernel requires CAP_BPF, since BTF loading requires it. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20211201181040.23337-9-alexei.starovoitov@gmail.com
2021-12-02libbpf: Cleanup struct bpf_core_cand.Andrii Nakryiko
Remove two redundant fields from struct bpf_core_cand. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20211201181040.23337-8-alexei.starovoitov@gmail.com
2021-12-02bpf: Adjust BTF log size limit.Alexei Starovoitov
Make BTF log size limit to be the same as the verifier log size limit. Otherwise tools that progressively increase log size and use the same log for BTF loading and program loading will be hitting hard to debug EINVAL. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20211201181040.23337-7-alexei.starovoitov@gmail.com
2021-12-02bpf: Pass a set of bpf_core_relo-s to prog_load command.Alexei Starovoitov
struct bpf_core_relo is generated by llvm and processed by libbpf. It's a de-facto uapi. With CO-RE in the kernel the struct bpf_core_relo becomes uapi de-jure. Add an ability to pass a set of 'struct bpf_core_relo' to prog_load command and let the kernel perform CO-RE relocations. Note the struct bpf_line_info and struct bpf_func_info have the same layout when passed from LLVM to libbpf and from libbpf to the kernel except "insn_off" fields means "byte offset" when LLVM generates it. Then libbpf converts it to "insn index" to pass to the kernel. The struct bpf_core_relo's "insn_off" field is always "byte offset". Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20211201181040.23337-6-alexei.starovoitov@gmail.com
2021-12-02bpf: Define enum bpf_core_relo_kind as uapi.Alexei Starovoitov
enum bpf_core_relo_kind is generated by llvm and processed by libbpf. It's a de-facto uapi. With CO-RE in the kernel the bpf_core_relo_kind values become uapi de-jure. Also rename them with BPF_CORE_ prefix to distinguish from conflicting names in bpf_core_read.h. The enums bpf_field_info_kind, bpf_type_id_kind, bpf_type_info_kind, bpf_enum_value_kind are passing different values from bpf program into llvm. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20211201181040.23337-5-alexei.starovoitov@gmail.com
2021-12-02bpf: Prepare relo_core.c for kernel duty.Alexei Starovoitov
Make relo_core.c to be compiled for the kernel and for user space libbpf. Note the patch is reducing BPF_CORE_SPEC_MAX_LEN from 64 to 32. This is the maximum number of nested structs and arrays. For example: struct sample { int a; struct { int b[10]; }; }; struct sample *s = ...; int *y = &s->b[5]; This field access is encoded as "0:1:0:5" and spec len is 4. The follow up patch might bump it back to 64. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20211201181040.23337-4-alexei.starovoitov@gmail.com
2021-12-02bpf: Rename btf_member accessors.Alexei Starovoitov
Rename btf_member_bit_offset() and btf_member_bitfield_size() to avoid conflicts with similarly named helpers in libbpf's btf.h. Rename the kernel helpers, since libbpf helpers are part of uapi. Suggested-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20211201181040.23337-3-alexei.starovoitov@gmail.com
2021-12-02libbpf: Replace btf__type_by_id() with btf_type_by_id().Alexei Starovoitov
To prepare relo_core.c to be compiled in the kernel and the user space replace btf__type_by_id with btf_type_by_id. In libbpf btf__type_by_id and btf_type_by_id have different behavior. bpf_core_apply_relo_insn() needs behavior of uapi btf__type_by_id vs internal btf_type_by_id, but type_id range check is already done in bpf_core_apply_relo(), so it's safe to replace it everywhere. The kernel btf_type_by_id() does the check anyway. It doesn't hurt. Suggested-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20211201181040.23337-2-alexei.starovoitov@gmail.com
2021-12-02Merge tag 'trace-v5.16-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: "Three tracing fixes: - Allow compares of strings when using signed and unsigned characters - Fix kmemleak false positive for histogram entries - Handle negative numbers for user defined kretprobe data sizes" * tag 'trace-v5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: kprobes: Limit max data_size of the kretprobe instances tracing: Fix a kmemleak false positive in tracing_map tracing/histograms: String compares should not care about signed values
2021-12-02Merge tag 'for-linus-5.16-2' of git://github.com/cminyard/linux-ipmiLinus Torvalds
Pull IPMI fixes from Corey Minyard: "Some changes that went in 5.16 had issues. When working on the design a piece was redesigned and things got missed. And the message type was not being initialized when it was allocated, resulting in crashes. In addition, the IPMI driver has had a shutdown issue where it could still have an item in a system workqueue after it had been shutdown. Move to a private workqueue to avoid that problem" * tag 'for-linus-5.16-2' of git://github.com/cminyard/linux-ipmi: ipmi:ipmb: Fix unknown command response ipmi: fix IPMI_SMI_MSG_TYPE_IPMB_DIRECT response length checking ipmi: fix oob access due to uninit smi_msg type ipmi: msghandler: Make symbol 'remove_work_wq' static ipmi: Move remove_work to dedicated workqueue
2021-12-02s390: update defconfigsHeiko Carstens
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-12-02Revert "drm/i915: Implement Wa_1508744258"José Roberto de Souza
This workarounds are causing hangs, because I missed the fact that it needs to be enabled for all cases and disabled when doing a resolve pass. So KMD only needs to whitelist it and UMD will be the one setting it on per case. This reverts commit 28ec02c9cbebf3feeaf21a59df9dfbc02bda3362. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/4145 Signed-off-by: José Roberto de Souza <jose.souza@intel.com> Fixes: 28ec02c9cbeb ("drm/i915: Implement Wa_1508744258") Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211119140931.32791-1-jose.souza@intel.com (cherry picked from commit f3799ff16fcfacd44aee55db162830df461b631f) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2021-12-02HID: bigbenff: prevent null pointer dereferenceBenjamin Tissoires
When emulating the device through uhid, there is a chance we don't have output reports and so report_field is null. Cc: stable@vger.kernel.org Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20211202095334.14399-3-benjamin.tissoires@redhat.com
2021-12-02HID: sony: fix error path in probeBenjamin Tissoires
When the setup of the GHL fails, we are not calling hid_hw_stop(). This leads to the hidraw node not being released, meaning a crash whenever somebody attempts to open the file. Cc: stable@vger.kernel.org Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20211202095334.14399-2-benjamin.tissoires@redhat.com
2021-12-02HID: add USB_HID dependancy on some USB HID driversGreg Kroah-Hartman
Some HID drivers are only for USB drivers, yet did not depend on CONFIG_USB_HID. This was hidden by the fact that the USB functions were stubbed out in the past, but now that drivers are checking for USB devices properly, build errors can occur with some random configurations. Reported-by: kernel test robot <lkp@intel.com> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Link: https://lore.kernel.org/r/20211202114819.2511954-1-gregkh@linuxfoundation.org
2021-12-02HID: check for valid USB device for many HID driversGreg Kroah-Hartman
Many HID drivers assume that the HID device assigned to them is a USB device as that was the only way HID devices used to be able to be created in Linux. However, with the additional ways that HID devices can be created for many different bus types, that is no longer true, so properly check that we have a USB device associated with the HID device before allowing a driver that makes this assumption to claim it. Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Michael Zaidman <michael.zaidman@gmail.com> Cc: Stefan Achatz <erazor_de@users.sourceforge.net> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Alexandre Torgue <alexandre.torgue@foss.st.com> Cc: linux-input@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> [bentiss: amended for thrustmater.c hunk to apply] Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Link: https://lore.kernel.org/r/20211201183503.2373082-3-gregkh@linuxfoundation.org
2021-12-02HID: wacom: fix problems when device is not a valid USB deviceGreg Kroah-Hartman
The wacom driver accepts devices of more than just USB types, but some code paths can cause problems if the device being controlled is not a USB device due to a lack of checking. Add the needed checks to ensure that the USB device accesses are only happening on a "real" USB device, and not one on some other bus. Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Cc: stable@vger.kernel.org Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Link: https://lore.kernel.org/r/20211201183503.2373082-2-gregkh@linuxfoundation.org
2021-12-02HID: add hid_is_usb() function to make it simpler for USB detectionGreg Kroah-Hartman
A number of HID drivers already call hid_is_using_ll_driver() but only for the detection of if this is a USB device or not. Make this more obvious by creating hid_is_usb() and calling the function that way. Also converts the existing hid_is_using_ll_driver() functions to use the new call. Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Cc: stable@vger.kernel.org Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Link: https://lore.kernel.org/r/20211201183503.2373082-1-gregkh@linuxfoundation.org
2021-12-02sched/cputime: Fix getrusage(RUSAGE_THREAD) with nohz_fullFrederic Weisbecker
getrusage(RUSAGE_THREAD) with nohz_full may return shorter utime/stime than the actual time. task_cputime_adjusted() snapshots utime and stime and then adjust their sum to match the scheduler maintained cputime.sum_exec_runtime. Unfortunately in nohz_full, sum_exec_runtime is only updated once per second in the worst case, causing a discrepancy against utime and stime that can be updated anytime by the reader using vtime. To fix this situation, perform an update of cputime.sum_exec_runtime when the cputime snapshot reports the task as actually running while the tick is disabled. The related overhead is then contained within the relevant situations. Reported-by: Hasegawa Hitomi <hasegawa-hitomi@fujitsu.com> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Hasegawa Hitomi <hasegawa-hitomi@fujitsu.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com> Acked-by: Phil Auld <pauld@redhat.com> Link: https://lore.kernel.org/r/20211026141055.57358-3-frederic@kernel.org
2021-12-02timers/nohz: Last resort update jiffies on nohz_full IRQ entryFrederic Weisbecker
When at least one CPU runs in nohz_full mode, a dedicated timekeeper CPU is guaranteed to stay online and to never stop its tick. Meanwhile on some rare case, the dedicated timekeeper may be running with interrupts disabled for a while, such as in stop_machine. If jiffies stop being updated, a nohz_full CPU may end up endlessly programming the next tick in the past, taking the last jiffies update monotonic timestamp as a stale base, resulting in an tick storm. Here is a scenario where it matters: 0) CPU 0 is the timekeeper and CPU 1 a nohz_full CPU. 1) A stop machine callback is queued to execute somewhere. 2) CPU 0 reaches MULTI_STOP_DISABLE_IRQ while CPU 1 is still in MULTI_STOP_PREPARE. Hence CPU 0 can't do its timekeeping duty. CPU 1 can still take IRQs. 3) CPU 1 receives an IRQ which queues a timer callback one jiffy forward. 4) On IRQ exit, CPU 1 schedules the tick one jiffy forward, taking last_jiffies_update as a base. But last_jiffies_update hasn't been updated for 2 jiffies since the timekeeper has interrupts disabled. 5) clockevents_program_event(), which relies on ktime_get(), observes that the expiration is in the past and therefore programs the min delta event on the clock. 6) The tick fires immediately, goto 3) 7) Tick storm, the nohz_full CPU is drown and takes ages to reach MULTI_STOP_DISABLE_IRQ, which is the only way out of this situation. Solve this with unconditionally updating jiffies if the value is stale on nohz_full IRQ entry. IRQs and other disturbances are expected to be rare enough on nohz_full for the unconditional call to ktime_get() to actually matter. Reported-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Paul E. McKenney <paulmck@kernel.org> Link: https://lore.kernel.org/r/20211026141055.57358-2-frederic@kernel.org
2021-12-02selftests: net: remove meaningless help optionLi Zhijian
$ ./fcnal-test.sh -t help Test names: help Looks it intent to list the available tests but it didn't do the right thing. I will add another option the do that in the later patch. Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02mctp: Remove redundant if statementsXu Wang
The 'if (dev)' statement already move into dev_{put , hold}, so remove redundant if statements. Signed-off-by: Xu Wang <vulab@iscas.ac.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net: openvswitch: Remove redundant if statementsXu Wang
The 'if (dev)' statement already move into dev_{put , hold}, so remove redundant if statements. Signed-off-by: Xu Wang <vulab@iscas.ac.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02ipvlan: Remove redundant if statementsXu Wang
The 'if (dev)' statement already move into dev_{put , hold}, so remove redundant if statements. Signed-off-by: Xu Wang <vulab@iscas.ac.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net: dsa: b53: Add SPI ID tableFlorian Fainelli
Currently autoloading for SPI devices does not use the DT ID table, it uses SPI modalises. Supporting OF modalises is going to be difficult if not impractical, an attempt was made but has been reverted, so ensure that module autoloading works for this driver by adding an id_table listing the SPI IDs for everything. Fixes: 96c8395e2166 ("spi: Revert modalias changes") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net: lan966x: Fix builds for lan966x driverHoratiu Vultur
The lan966x is using the function 'packing' to create/extract the information for the IFH, that is used to be added in front of the frames when they are injected/extracted. Therefore update the Kconfig to select config option 'PACKING' whenever lan966x driver is enabled. Fixes: db8bcaad539314 ("net: lan966x: add the basic lan966x driver") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02dt-bindings: net: lan966x: Add additional properties for lan966xHoratiu Vultur
This patch updates the dt-bindings for lan966x switch. It adds the properties 'additionalProperties' and 'unevaluatedProperties' for ethernet-ports and ports nodes. In this way it is not possible to add more properties to these nodes. Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02qed: Enhance rammod debug prints to provide pretty detailsPrabhakar Kushwaha
Instead of printing numbers of protocol IDs and rammod commands, enhance debug prints to provide names. s_protocol_types[] and s_ramrod_cmd_ids arrays[] are added to support along with APIs. Signed-off-by: Ariel Elior <aelior@marvell.com> Signed-off-by: Alok Prasad <palok@marvell.com> Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02gro: Fix inconsistent indentingJiapeng Chong
Eliminate the follow smatch warning: net/ipv6/ip6_offload.c:249 ipv6_gro_receive() warn: inconsistent indenting. Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02selftests: net: Correct case nameLi Zhijian
ipv6_addr_bind/ipv4_addr_bind are function names. Previously, bind test would not be run by default due to the wrong case names Fixes: 34d0302ab861 ("selftests: Add ipv6 address bind tests to fcnal-test") Fixes: 75b2b2b3db4c ("selftests: Add ipv4 address bind tests to fcnal-test") Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net: lan966x: Fix duplicate check in frame extractionHoratiu Vultur
The blamed commit generates the following smatch static checker warning: drivers/net/ethernet/microchip/lan966x/lan966x_main.c:515 lan966x_xtr_irq_handler() warn: duplicate check 'sz < 0' (previous on line 502) This patch fixes this issue removing the duplicate check 'sz < 0' Fixes: d28d6d2e37d10d ("net: lan966x: add port module support") Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net/rds: correct socket tunable error in rds_tcp_tune()William Kucharski
Correct an error where setting /proc/sys/net/rds/tcp/rds_tcp_rcvbuf would instead modify the socket's sk_sndbuf and would leave sk_rcvbuf untouched. Fixes: c6a58ffed536 ("RDS: TCP: Add sysctl tunables for sndbuf/rcvbuf on rds-tcp socket") Signed-off-by: William Kucharski <william.kucharski@oracle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02mctp: Don't let RTM_DELROUTE delete local routesMatt Johnston
We need to test against the existing route type, not the rtm_type in the netlink request. Fixes: 83f0a0b7285b ("mctp: Specify route types, require rtm_type in RTM_*ROUTE messages") Signed-off-by: Matt Johnston <matt@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net/smc: Keep smc_close_final rc during active closeTony Lu
When smc_close_final() returns error, the return code overwrites by kernel_sock_shutdown() in smc_close_active(). The return code of smc_close_final() is more important than kernel_sock_shutdown(), and it will pass to userspace directly. Fix it by keeping both return codes, if smc_close_final() raises an error, return it or kernel_sock_shutdown()'s. Link: https://lore.kernel.org/linux-s390/1f67548e-cbf6-0dce-82b5-10288a4583bd@linux.ibm.com/ Fixes: 606a63c9783a ("net/smc: Ensure the active closing peer first closes clcsock") Suggested-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: Tony Lu <tonylu@linux.alibaba.com> Reviewed-by: Wen Gu <guwen@linux.alibaba.com> Acked-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02ibmvnic: drop bad optimization in reuse_tx_pools()Sukadev Bhattiprolu
When trying to decide whether or not reuse existing rx/tx pools we tried to allow a range of values for the pool parameters rather than exact matches. This was intended to reuse the resources for instance when switching between two VIO servers with different default parameters. But this optimization is incomplete and breaks when we try to change the number of queues for instance. The optimization needs to be updated, so drop it for now and simplify the code. Fixes: bbd809305bc7 ("ibmvnic: Reuse tx pools when possible") Reported-by: Dany Madden <drt@linux.ibm.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com> Reviewed-by: Dany Madden <drt@linux.ibm.com> Reviewed-by: Rick Lindsley <ricklind@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02ibmvnic: drop bad optimization in reuse_rx_pools()Sukadev Bhattiprolu
When trying to decide whether or not reuse existing rx/tx pools we tried to allow a range of values for the pool parameters rather than exact matches. This was intended to reuse the resources for instance when switching between two VIO servers with different default parameters. But this optimization is incomplete and breaks when we try to change the number of queues for instance. The optimization needs to be updated, so drop it for now and simplify the code. Fixes: 489de956e7a2 ("ibmvnic: Reuse rx pools when possible") Reported-by: Dany Madden <drt@linux.ibm.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com> Reviewed-by: Dany Madden <drt@linux.ibm.com> Reviewed-by: Rick Lindsley <ricklind@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net/smc: fix wrong list_del in smc_lgr_cleanup_earlyDust Li
smc_lgr_cleanup_early() meant to delete the link group from the link group list, but it deleted the list head by mistake. This may cause memory corruption since we didn't remove the real link group from the list and later memseted the link group structure. We got a list corruption panic when testing: [  231.277259] list_del corruption. prev->next should be ffff8881398a8000, but was 0000000000000000 [  231.278222] ------------[ cut here ]------------ [  231.278726] kernel BUG at lib/list_debug.c:53! [  231.279326] invalid opcode: 0000 [#1] SMP NOPTI [  231.279803] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.10.46+ #435 [  231.280466] Hardware name: Alibaba Cloud ECS, BIOS 8c24b4c 04/01/2014 [  231.281248] Workqueue: events smc_link_down_work [  231.281732] RIP: 0010:__list_del_entry_valid+0x70/0x90 [  231.282258] Code: 4c 60 82 e8 7d cc 6a 00 0f 0b 48 89 fe 48 c7 c7 88 4c 60 82 e8 6c cc 6a 00 0f 0b 48 89 fe 48 c7 c7 c0 4c 60 82 e8 5b cc 6a 00 <0f> 0b 48 89 fe 48 c7 c7 00 4d 60 82 e8 4a cc 6a 00 0f 0b cc cc cc [  231.284146] RSP: 0018:ffffc90000033d58 EFLAGS: 00010292 [  231.284685] RAX: 0000000000000054 RBX: ffff8881398a8000 RCX: 0000000000000000 [  231.285415] RDX: 0000000000000001 RSI: ffff88813bc18040 RDI: ffff88813bc18040 [  231.286141] RBP: ffffffff8305ad40 R08: 0000000000000003 R09: 0000000000000001 [  231.286873] R10: ffffffff82803da0 R11: ffffc90000033b90 R12: 0000000000000001 [  231.287606] R13: 0000000000000000 R14: ffff8881398a8000 R15: 0000000000000003 [  231.288337] FS:  0000000000000000(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 [  231.289160] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [  231.289754] CR2: 0000000000e72058 CR3: 000000010fa96006 CR4: 00000000003706f0 [  231.290485] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [  231.291211] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [  231.291940] Call Trace: [  231.292211]  smc_lgr_terminate_sched+0x53/0xa0 [  231.292677]  smc_switch_conns+0x75/0x6b0 [  231.293085]  ? update_load_avg+0x1a6/0x590 [  231.293517]  ? ttwu_do_wakeup+0x17/0x150 [  231.293907]  ? update_load_avg+0x1a6/0x590 [  231.294317]  ? newidle_balance+0xca/0x3d0 [  231.294716]  smcr_link_down+0x50/0x1a0 [  231.295090]  ? __wake_up_common_lock+0x77/0x90 [  231.295534]  smc_link_down_work+0x46/0x60 [  231.295933]  process_one_work+0x18b/0x350 Fixes: a0a62ee15a829 ("net/smc: separate locks for SMCD and SMCR link group lists") Signed-off-by: Dust Li <dust.li@linux.alibaba.com> Acked-by: Karsten Graul <kgraul@linux.ibm.com> Reviewed-by: Tony Lu <tonylu@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02Fix Comment of ETH_P_802_3_MINXiayu Zhang
The description of ETH_P_802_3_MIN is misleading. The value of EthernetType in Ethernet II frame is more than 0x0600, the value of Length in 802.3 frame is less than 0x0600. Signed-off-by: Xiayu Zhang <Xiayu.Zhang@mediatek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02ethernet: aquantia: Try MAC address from device treeTianhao Chai
Apple M1 Mac minis (2020) with 10GE NICs do not have MAC address in the card, but instead need to obtain MAC addresses from the device tree. In this case the hardware will report an invalid MAC. Currently atlantic driver does not query the DT for MAC address and will randomly assign a MAC if the NIC doesn't have a permanent MAC burnt in. This patch causes the driver to perfer a valid MAC address from OF (if present) over HW self-reported MAC and only fall back to a random MAC address when neither of them is valid. Signed-off-by: Tianhao Chai <cth451@gmail.com> Reviewed-by: Igor Russkikh <irusskikh@marvell.com> Reviewed-by: Hector Martin <marcan@marcan.st> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02dt-bindings: net: dsa: qca8k: improve port definition documentationAnsuel Smith
Clean and improve port definition for qca8k documentation by referencing the dsa generic port definition and adding the additional specific port definition. Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02dt-bindings: net: dsa: split generic port definition from dsa.yamlAnsuel Smith
Some switch may require to add additional binding to the node port. Move DSA generic port definition to a dedicated yaml to permit this. Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02ipv4: convert fib_num_tclassid_users to atomic_tEric Dumazet
Before commit faa041a40b9f ("ipv4: Create cleanup helper for fib_nh") changes to net->ipv4.fib_num_tclassid_users were protected by RTNL. After the change, this is no longer the case, as free_fib_info_rcu() runs after rcu grace period, without rtnl being held. Fixes: faa041a40b9f ("ipv4: Create cleanup helper for fib_nh") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: David Ahern <dsahern@kernel.org> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02Merge branch 'hns3-cleanups'David S. Miller
Guangbin Huang says: ==================== net: hns3: some cleanups for -next To improve code readability and simplicity, this series add 9 cleanup patches for the HNS3 ethernet driver. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net: hns3: refactor function hns3_get_vector_ring_chain()Jie Wang
Currently hns3_get_vector_ring_chain() is a bit long. Refactor it by extracting sub process to improve the readability. Signed-off-by: Jie Wang <wangjie125@huawei.com> Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net: hns3: refactor function hclge_set_channels()Jie Wang
Currently hclge_set_channels() is a bit long. Refactor it by extracting sub process to improve the readability. Signed-off-by: Jie Wang <wangjie125@huawei.com> Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net: hns3: refactor function hclge_configure()Jie Wang
Currently hclge_configure() is a bit long. Refactor it by extracting sub process to improve the readability. Signed-off-by: Jie Wang <wangjie125@huawei.com> Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net: hns3: split function hclge_update_port_base_vlan_cfg()Jian Shen
Currently the function hclge_update_port_base_vlan_cfg() is a bit long. Split it to several small functions, to improve the readability. Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net: hns3: split function hns3_nic_net_xmit()Yufeng Mo
Function hns3_nic_net_xmit() is a bit too long. So add a new function hns3_handle_skb_desc() to simplify code and improve code readability. Signed-off-by: Yufeng Mo <moyufeng@huawei.com> Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net: hns3: split function hclge_get_fd_rule_info()Jian Shen
Currently the function hclge_get_fd_rule_info() is a bit long. Split it to several small functions, to improve readability. Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-02net: hns3: split function hclge_init_vlan_config()Jian Shen
Currently the function hclge_init_vlan_config() is a bit long. Split it to several small functions, to simplify code and improve code readability. Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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