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* set sk_pacing_shift for 802.3->802.11 encap offload
* some monitor support for 802.11->802.3 decap offload
* HE (802.11ax) spec updates
* userspace API for TDLS HE support
* along with various other small features, cleanups and
fixups
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Merge tag 'mac80211-next-for-net-next-2021-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Another set of updates, all over the map:
* set sk_pacing_shift for 802.3->802.11 encap offload
* some monitor support for 802.11->802.3 decap offload
* HE (802.11ax) spec updates
* userspace API for TDLS HE support
* along with various other small features, cleanups and
fixups
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
cap_setfcap is required to create file capabilities.
Since commit 8db6c34f1dbc ("Introduce v3 namespaced file capabilities"),
a process running as uid 0 but without cap_setfcap is able to work
around this as follows: unshare a new user namespace which maps parent
uid 0 into the child namespace.
While this task will not have new capabilities against the parent
namespace, there is a loophole due to the way namespaced file
capabilities are represented as xattrs. File capabilities valid in
userns 1 are distinguished from file capabilities valid in userns 2 by
the kuid which underlies uid 0. Therefore the restricted root process
can unshare a new self-mapping namespace, add a namespaced file
capability onto a file, then use that file capability in the parent
namespace.
To prevent that, do not allow mapping parent uid 0 if the process which
opened the uid_map file does not have CAP_SETFCAP, which is the
capability for setting file capabilities.
As a further wrinkle: a task can unshare its user namespace, then open
its uid_map file itself, and map (only) its own uid. In this case we do
not have the credential from before unshare, which was potentially more
restricted. So, when creating a user namespace, we record whether the
creator had CAP_SETFCAP. Then we can use that during map_write().
With this patch:
1. Unprivileged user can still unshare -Ur
ubuntu@caps:~$ unshare -Ur
root@caps:~# logout
2. Root user can still unshare -Ur
ubuntu@caps:~$ sudo bash
root@caps:/home/ubuntu# unshare -Ur
root@caps:/home/ubuntu# logout
3. Root user without CAP_SETFCAP cannot unshare -Ur:
root@caps:/home/ubuntu# /sbin/capsh --drop=cap_setfcap --
root@caps:/home/ubuntu# /sbin/setcap cap_setfcap=p /sbin/setcap
unable to set CAP_SETFCAP effective capability: Operation not permitted
root@caps:/home/ubuntu# unshare -Ur
unshare: write failed /proc/self/uid_map: Operation not permitted
Note: an alternative solution would be to allow uid 0 mappings by
processes without CAP_SETFCAP, but to prevent such a namespace from
writing any file capabilities. This approach can be seen at [1].
Background history: commit 95ebabde382 ("capabilities: Don't allow
writing ambiguous v3 file capabilities") tried to fix the issue by
preventing v3 fscaps to be written to disk when the root uid would map
to the same uid in nested user namespaces. This led to regressions for
various workloads. For example, see [2]. Ultimately this is a valid
use-case we have to support meaning we had to revert this change in
3b0c2d3eaa83 ("Revert 95ebabde382c ("capabilities: Don't allow writing
ambiguous v3 file capabilities")").
Link: https://git.kernel.org/pub/scm/linux/kernel/git/sergeh/linux.git/log/?h=2021-04-15/setfcap-nsfscaps-v4 [1]
Link: https://github.com/containers/buildah/issues/3071 [2]
Signed-off-by: Serge Hallyn <serge@hallyn.com>
Reviewed-by: Andrew G. Morgan <morgan@kernel.org>
Tested-by: Christian Brauner <christian.brauner@ubuntu.com>
Reviewed-by: Christian Brauner <christian.brauner@ubuntu.com>
Tested-by: Giuseppe Scrivano <gscrivan@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Expose a non standard query port via IOCTL that will be used to expose
port attributes that are specific to mlx5 devices.
The new interface receives a port number to query and returns a structure
that contains the available attributes for that port. This will be used
to fill the gap between pure DEVX use cases and use cases where a kernel
needs to inform userspace about various kernel driver configurations that
userspace must use in order to work correctly.
Flags is used to indicate which fields are valid on return.
MLX5_IB_UAPI_QUERY_PORT_VPORT:
The vport number of the queered port.
MLX5_IB_UAPI_QUERY_PORT_VPORT_VHCA_ID:
The VHCA ID of the vport of the queered port.
MLX5_IB_UAPI_QUERY_PORT_VPORT_STEERING_ICM_RX:
The vport's RX ICM address used for sw steering.
MLX5_IB_UAPI_QUERY_PORT_VPORT_STEERING_ICM_TX:
The vport's TX ICM address used for sw steering.
MLX5_IB_UAPI_QUERY_PORT_VPORT_REG_C0:
The metadata used to tag egress packets of the vport.
MLX5_IB_UAPI_QUERY_PORT_ESW_OWNER_VHCA_ID:
The E-Switch owner vhca id of the vport.
Link: https://lore.kernel.org/r/6e2ef13e5a266a6c037eb0105eb1564c7bb52f23.1618743394.git.leonro@nvidia.com
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Add a capability, KVM_CAP_SGX_ATTRIBUTE, that can be used by userspace
to grant a VM access to a priveleged attribute, with args[0] holding a
file handle to a valid SGX attribute file.
The SGX subsystem restricts access to a subset of enclave attributes to
provide additional security for an uncompromised kernel, e.g. to prevent
malware from using the PROVISIONKEY to ensure its nodes are running
inside a geniune SGX enclave and/or to obtain a stable fingerprint.
To prevent userspace from circumventing such restrictions by running an
enclave in a VM, KVM restricts guest access to privileged attributes by
default.
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Kai Huang <kai.huang@intel.com>
Message-Id: <0b099d65e933e068e3ea934b0523bab070cb8cea.1618196135.git.kai.huang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The implementation takes inspiration from the existing bpf_trace_printk
helper but there are a few differences:
To allow for a large number of format-specifiers, parameters are
provided in an array, like in bpf_seq_printf.
Because the output string takes two arguments and the array of
parameters also takes two arguments, the format string needs to fit in
one argument. Thankfully, ARG_PTR_TO_CONST_STR is guaranteed to point to
a zero-terminated read-only map so we don't need a format string length
arg.
Because the format-string is known at verification time, we also do
a first pass of format string validation in the verifier logic. This
makes debugging easier.
Signed-off-by: Florent Revest <revest@chromium.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210419155243.1632274-4-revest@chromium.org
Current Hardware events and Hardware cache events have special perf
types, PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE. The two types don't
pass the PMU type in the user interface. For a hybrid system, the perf
subsystem doesn't know which PMU the events belong to. The first capable
PMU will always be assigned to the events. The events never get a chance
to run on the other capable PMUs.
Extend the two types to become PMU aware types. The PMU type ID is
stored at attr.config[63:32].
Add a new PMU capability, PERF_PMU_CAP_EXTENDED_HW_TYPE, to indicate a
PMU which supports the extended PERF_TYPE_HARDWARE and
PERF_TYPE_HW_CACHE.
The PMU type is only required when searching a specific PMU. The PMU
specific codes will only be interested in the 'real' config value, which
is stored in the low 32 bit of the event->attr.config. Update the
event->attr.config in the generic code, so the PMU specific codes don't
need to calculate it separately.
If a user specifies a PMU type, but the PMU doesn't support the extended
type, error out.
If an event cannot be initialized in a PMU specified by a user, error
out immediately. Perf should not try to open it on other PMUs.
The new PMU capability is only set for the X86 hybrid PMUs for now.
Other architectures, e.g., ARM, may need it as well. The support on ARM
may be implemented later separately.
Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1618237865-33448-22-git-send-email-kan.liang@linux.intel.com
Draft P802.11ax_D2.5 defines the following capabilities that
can be negotiated using RSNXE capabilities:
- Secure LTF measurement exchange protocol.
- Secure RTT measurement exchange protocol.
- Management frame protection for all management frames exchanged
during the negotiation and range measurement procedure.
Extend the nl80211 API to allow drivers to declare support for
these new capabilities as part of extended feature.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210409123755.8280e31d8091.Ifcb29f84f432290338f80c8378aa5c9e0a390c93@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
- keep the ZC code, drop the code related to reinit
net/bridge/netfilter/ebtables.c
- fix build after move to net_generic
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This capability will allow the user to know which KVM_GUESTDBG_* bits
are supported.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20210401135451.1004564-3-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Most devices maintain RMON (RFC 2819) stats - particularly
the "histogram" of packets received by size. Unlike other
RFCs which duplicate IEEE stats, the short/oversized frame
counters in RMON don't seem to match IEEE stats 1-to-1 either,
so expose those, too. Do not expose basic packet, CRC errors
etc - those are already otherwise covered.
Because standard defines packet ranges only up to 1518, and
everything above that should theoretically be "oversized"
- devices often create their own ranges.
Going beyond what the RFC defines - expose the "histogram"
in the Tx direction (assume for now that the ranges will
be the same).
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Number of devices maintains the standard-based MAC control
counters for control frames. Add a API for those.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Most of the MAC statistics are included in
struct rtnl_link_stats64, but some fields
are aggregated. Besides it's good to expose
these clearly hardware stats separately.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add an interface for reading standard stats, including
stats which don't have a corresponding control interface.
Start with IEEE 802.3 PHY stats. There seems to be only
one stat to expose there.
Define API to not require user space changes when new
stats or groups are added. Groups are based on bitset,
stats have a string set associated.
v1: wrap stats in a nest
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds a new software event to count context switches
involving cgroup switches. So it's counted only if cgroups of
previous and next tasks are different. Note that it only checks the
cgroups in the perf_event subsystem. For cgroup v2, it shouldn't
matter anyway.
One can argue that we can do this by using existing sched_switch event
with eBPF. But some systems might not have eBPF for some reason so
I'd like to add this as a simple way.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210210083327.22726-2-namhyung@kernel.org
Adds bit perf_event_attr::sigtrap, which can be set to cause events to
send SIGTRAP (with si_code TRAP_PERF) to the task where the event
occurred. The primary motivation is to support synchronous signals on
perf events in the task where an event (such as breakpoints) triggered.
To distinguish perf events based on the event type, the type is set in
si_errno. For events that are associated with an address, si_addr is
copied from perf_sample_data.
The new field perf_event_attr::sig_data is copied to si_perf, which
allows user space to disambiguate which event (of the same type)
triggered the signal. For example, user space could encode the relevant
information it cares about in sig_data.
We note that the choice of an opaque u64 provides the simplest and most
flexible option. Alternatives where a reference to some user space data
is passed back suffer from the problem that modification of referenced
data (be it the event fd, or the perf_event_attr) can race with the
signal being delivered (of course, the same caveat applies if user space
decides to store a pointer in sig_data, but the ABI explicitly avoids
prescribing such a design).
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Link: https://lore.kernel.org/lkml/YBv3rAT566k+6zjg@hirez.programming.kicks-ass.net/
Introduces the TRAP_PERF si_code, and associated siginfo_t field
si_perf. These will be used by the perf event subsystem to send signals
(if requested) to the task where an event occurred.
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k
Acked-by: Arnd Bergmann <arnd@arndb.de> # asm-generic
Link: https://lkml.kernel.org/r/20210408103605.1676875-6-elver@google.com
Adds bit perf_event_attr::remove_on_exec, to support removing an event
from a task on exec.
This option supports the case where an event is supposed to be
process-wide only, and should not propagate beyond exec, to limit
monitoring to the original process image only.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210408103605.1676875-5-elver@google.com
Adds bit perf_event_attr::inherit_thread, to restricting inheriting
events only if the child was cloned with CLONE_THREAD.
This option supports the case where an event is supposed to be
process-wide only (including subthreads), but should not propagate
beyond the current process's shared environment.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/lkml/YBvj6eJR%2FDY2TsEB@hirez.programming.kicks-ass.net/
Similarly to pause statistics add stats for FEC.
The IEEE standard mandates two sets of counters:
- 30.5.1.1.17 aFECCorrectedBlocks
- 30.5.1.1.18 aFECUncorrectableBlocks
where block is a block of bits FEC operates on.
Each of these counters is defined per lane (PCS instance).
Multiple vendors provide number of corrected _bits_ rather
than/as well as blocks.
This set adds the 2 standard-based block counters and a extra
one for corrected bits.
Counters are exposed to user space via netlink in new attributes.
Each attribute carries an array of u64s, first element is
the total count, and the following ones are a per-lane break down.
Much like with pause stats the operation will not fail when driver
does not implement the get_fec_stats callback (nor can the driver
fail the operation by returning an error). If stats can't be
reported the relevant attributes will be empty.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Couple of dmaengine driver fixes for:
- race and descriptor issue for xilinx driver
- fix interrupt handling, wq state & cleanup, field sizes for
completion, msix permissions for idxd driver
- rumtim pm fix for tegra driver
- double free fix in dma_async_device_register
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Merge tag 'dmaengine-fix-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine fixes from Vinod Koul:
"A couple of dmaengine driver fixes for:
- race and descriptor issue for xilinx driver
- fix interrupt handling, wq state & cleanup, field sizes for
completion, msix permissions for idxd driver
- runtime pm fix for tegra driver
- double free fix in dma_async_device_register"
* tag 'dmaengine-fix-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
dmaengine: idxd: fix wq cleanup of WQCFG registers
dmaengine: idxd: clear MSIX permission entry on shutdown
dmaengine: plx_dma: add a missing put_device() on error path
dmaengine: tegra20: Fix runtime PM imbalance on error
dmaengine: Fix a double free in dma_async_device_register
dmaengine: dw: Make it dependent to HAS_IOMEM
dmaengine: idxd: fix wq size store permission state
dmaengine: idxd: fix opcap sysfs attribute output
dmaengine: idxd: fix delta_rec and crc size field for completion record
dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback
dmaengine: xilinx: dpdma: Fix race condition in done IRQ
dmaengine: xilinx: dpdma: Fix descriptor issuing on video group
When posix access ACL is set, it can have an effect on file mode and it can
also need to clear SGID if.
- None of caller's group/supplementary groups match file owner group.
AND
- Caller is not priviliged (No CAP_FSETID).
As of now fuser server is responsible for changing the file mode as
well. But it does not know whether to clear SGID or not.
So add a flag FUSE_SETXATTR_ACL_KILL_SGID and send this info with SETXATTR
to let file server know that sgid needs to be cleared as well.
Reported-by: Luis Henriques <lhenriques@suse.de>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fuse client needs to send additional information to file server when it
calls SETXATTR(system.posix_acl_access), so add extra flags field to the
structure.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
There is currently no way to discover the target of a tracing program
attachment after the fact. Add this information to bpf_link_info and return
it when querying the bpf_link fd.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210413091607.58945-1-toke@redhat.com
Maor Gottlieb says:
====================
This series from Maor extends MEMIC to support atomic operations from the
host in addition to already supported regular read/write.
====================
* 'memic_ops':
RDMA/mlx5: Expose UAPI to query DM
RDMA/mlx5: Add support in MEMIC operations
RDMA/mlx5: Add support to MODIFY_MEMIC command
RDMA/mlx5: Re-organize the DM code
RDMA/mlx5: Move all DM logic to separate file
RDMA/uverbs: Make UVERBS_OBJECT_METHODS to consider line number
net/mlx5: Add MEMIC operations related bits
Expose UAPI to query MEMIC DM, this will let user space application
that didn't allocate the DM but has access to by owning the matching
command FD to retrieve its information.
Link: https://lore.kernel.org/r/20210411122924.60230-8-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
MEMIC buffer, in addition to regular read and write operations, can
support atomic operations from the host.
Introduce and implement new UAPI to allocate address space for MEMIC
operations such as atomic. This includes:
1. Expose new IOCTL for request mapping of MEMIC operation.
2. Hold the operations address in a list, so same operation to same DM
will be allocated only once.
3. Manage refcount on the mlx5_ib_dm object, so it would be keep valid
until all addresses were unmapped.
Link: https://lore.kernel.org/r/20210411122924.60230-7-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
msm-next from Rob:
* Big DSI phy/pll cleanup. Includes some clk patches, acked by
maintainer
* Initial support for sc7280
* compatibles fixes for sm8150/sm8250
* cleanups for all dpu gens to use same bandwidth scaling paths (\o/)
* various shrinker path lock contention optimizations
* unpin/swap support for GEM objects (disabled by default, enable with
msm.enable_eviction=1 .. due to various combinations of iommu drivers
with older gens I want to get more testing on hw I don't have in front
of me before enabling by default)
* The usual assortment of misc fixes and cleanups
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGvL=4aw15qoY8fbKG9FCgnx8Y-dCtf7xiFwTQSHopwSQg@mail.gmail.com
msm-next pull request has a baseline with stuff from -fixes, roll
forward first.
Some simple conflicts in amdgpu, ttm and one in i915 where git gets
confused and tries to add the same function twice.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This change introduces a prctl that allows the user program to control
which PAC keys are enabled in a particular task. The main reason
why this is useful is to enable a userspace ABI that uses PAC to
sign and authenticate function pointers and other pointers exposed
outside of the function, while still allowing binaries conforming
to the ABI to interoperate with legacy binaries that do not sign or
authenticate pointers.
The idea is that a dynamic loader or early startup code would issue
this prctl very early after establishing that a process may load legacy
binaries, but before executing any PAC instructions.
This change adds a small amount of overhead to kernel entry and exit
due to additional required instruction sequences.
On a DragonBoard 845c (Cortex-A75) with the powersave governor, the
overhead of similar instruction sequences was measured as 4.9ns when
simulating the common case where IA is left enabled, or 43.7ns when
simulating the uncommon case where IA is disabled. These numbers can
be seen as the worst case scenario, since in more realistic scenarios
a better performing governor would be used and a newer chip would be
used that would support PAC unlike Cortex-A75 and would be expected
to be faster than Cortex-A75.
On an Apple M1 under a hypervisor, the overhead of the entry/exit
instruction sequences introduced by this patch was measured as 0.3ns
in the case where IA is left enabled, and 33.0ns in the case where
IA is disabled.
Signed-off-by: Peter Collingbourne <pcc@google.com>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Link: https://linux-review.googlesource.com/id/Ibc41a5e6a76b275efbaa126b31119dc197b927a5
Link: https://lore.kernel.org/r/d6609065f8f40397a4124654eb68c9f490b4d477.1616123271.git.pcc@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
'linux/blkdev.h' and 'uapi/linux/lightnvm.h' included in 'lightnvm.h'
is duplicated.It is also included in the 5th and 7th line.
Signed-off-by: Zhang Yunkai <zhang.yunkai@zte.com.cn>
Signed-off-by: Matias Bjørling <matias.bjorling@wdc.com>
Link: https://lore.kernel.org/r/20210413105257.159260-4-matias.bjorling@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
In 'bpf_ringbuf_reserve()' we require the flag to '0' at the moment.
For 'bpf_ringbuf_{discard,submit,output}' a flag of '0' might send a
notification to the process if needed.
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210412192434.944343-1-pctammela@mojatatu.com
Per net/bpf/test_run.c, particular prog types have additional
restrictions around the parameters that can be provided, so document
these in the header.
I didn't bother documenting the limitation on duration for raw
tracepoints since that's an output parameter anyway.
Tested with ./tools/testing/selftests/bpf/test_doc_build.sh.
Suggested-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Joe Stringer <joe@cilium.io>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Lorenz Bauer <lmb@cloudflare.com>
Link: https://lore.kernel.org/bpf/20210410174549.816482-1-joe@cilium.io
The delta_rec_size and crc_val in the completion record should
be 32bits and not 16bits.
Fixes: bfe1d56091c1 ("dmaengine: idxd: Init and probe for Intel data accelerators")
Reported-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/161645618572.2003490.14466173451736323035.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This adds two new POLL_ADD flags, IORING_POLL_UPDATE_EVENTS and
IORING_POLL_UPDATE_USER_DATA. As with the other POLL_ADD flag, these are
masked into sqe->len. If set, the POLL_ADD will have the following
behavior:
- sqe->addr must contain the the user_data of the poll request that
needs to be modified. This field is otherwise invalid for a POLL_ADD
command.
- If IORING_POLL_UPDATE_EVENTS is set, sqe->poll_events must contain the
new mask for the existing poll request. There are no checks for whether
these are identical or not, if a matching poll request is found, then it
is re-armed with the new mask.
- If IORING_POLL_UPDATE_USER_DATA is set, sqe->off must contain the new
user_data for the existing poll request.
A POLL_ADD with any of these flags set may complete with any of the
following results:
1) 0, which means that we successfully found the existing poll request
specified, and performed the re-arm procedure. Any error from that
re-arm will be exposed as a completion event for that original poll
request, not for the update request.
2) -ENOENT, if no existing poll request was found with the given
user_data.
3) -EALREADY, if the existing poll request was already in the process of
being removed/canceled/completing.
4) -EACCES, if an attempt was made to modify an internal poll request
(eg not one originally issued ass IORING_OP_POLL_ADD).
The usual -EINVAL cases apply as well, if any invalid fields are set
in the sqe for this command type.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The default io_uring poll mode is one-shot, where once the event triggers,
the poll command is completed and won't trigger any further events. If
we're doing repeated polling on the same file or socket, then it can be
more efficient to do multishot, where we keep triggering whenever the
event becomes true.
This deviates from the usual norm of having one CQE per SQE submitted. Add
a CQE flag, IORING_CQE_F_MORE, which tells the application to expect
further completion events from the submitted SQE. Right now the only user
of this is POLL_ADD in multishot mode.
Since sqe->poll_events is using the space that we normally use for adding
flags to commands, use sqe->len for the flag space for POLL_ADD. Multishot
mode is selected by setting IORING_POLL_ADD_MULTI in sqe->len. An
application should expect more CQEs for the specificed SQE if the CQE is
flagged with IORING_CQE_F_MORE. In multishot mode, only cancelation or an
error will terminate the poll request, in which case the flag will be
cleared.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Define get_module_eeprom_by_page() ethtool callback and implement
netlink infrastructure.
get_module_eeprom_by_page() allows network drivers to dump a part of
module's EEPROM specified by page and bank numbers along with offset and
length. It is effectively a netlink replacement for get_module_info()
and get_module_eeprom() pair, which is needed due to emergence of
complex non-linear EEPROM layouts.
Signed-off-by: Vladyslav Tarasiuk <vladyslavt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Add support to reset device after the user closes the file descriptor.
Because we support a single user, we can reset the device (if needs to)
after a user closes its file descriptor to make sure the device is in
idle and clean state for the next user.
- Add a new feature to allow the user to wait on interrupt. This is needed
for future ASICs
- Replace GFP_ATOMIC with GFP_KERNEL wherever possible and add code to
support failure of allocating with GFP_ATOMIC.
- Update code to support the latest firmware image:
- More security features are done in the firmware
- Remove hard-coded assumptions and replace them with values that are
sent to the firmware on loading.
- Print device unusable error
- Reset device in case the communication between driver and firmware
gets out of sync.
- Support new PCI device ids for secured GAUDI.
- Expose current power draw through the INFO IOCTL.
- Support resetting the device upon a request from the BMC (through F/W).
- Always use only a single MSI in GAUDI, due to H/W limitation.
- Improve data-path code by taking out code from spinlock protection.
- Allow user to specify custom timeout per Command Submission.
- Some enhancements to debugfs.
- Various minor changes and improvements.
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Merge tag 'misc-habanalabs-next-2021-04-10' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux into char-misc-next
Oded writes:
This tag contains habanalabs driver changes for v5.13:
- Add support to reset device after the user closes the file descriptor.
Because we support a single user, we can reset the device (if needs to)
after a user closes its file descriptor to make sure the device is in
idle and clean state for the next user.
- Add a new feature to allow the user to wait on interrupt. This is needed
for future ASICs
- Replace GFP_ATOMIC with GFP_KERNEL wherever possible and add code to
support failure of allocating with GFP_ATOMIC.
- Update code to support the latest firmware image:
- More security features are done in the firmware
- Remove hard-coded assumptions and replace them with values that are
sent to the firmware on loading.
- Print device unusable error
- Reset device in case the communication between driver and firmware
gets out of sync.
- Support new PCI device ids for secured GAUDI.
- Expose current power draw through the INFO IOCTL.
- Support resetting the device upon a request from the BMC (through F/W).
- Always use only a single MSI in GAUDI, due to H/W limitation.
- Improve data-path code by taking out code from spinlock protection.
- Allow user to specify custom timeout per Command Submission.
- Some enhancements to debugfs.
- Various minor changes and improvements.
* tag 'misc-habanalabs-next-2021-04-10' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux: (41 commits)
habanalabs: print f/w boot unknown error
habanalabs: update to latest F/W communication header
habanalabs/gaudi: skip iATU if F/W security is enabled
habanalabs/gaudi: derive security status from pci id
habanalabs: move dram scrub to free sequence
habanalabs: send dynamic msi-x indexes to f/w
habanalabs/gaudi: clear QM errors only if not in stop_on_err mode
habanalabs: support DEVICE_UNUSABLE error indication from FW
habanalabs: use strscpy instead of sprintf and strlcpy
habanalabs: remove the store jobs array from CS IOCTL
habanalabs/gaudi: add debugfs to DMA from the device
habanalabs/gaudi: sync stream add protection to SOB reset flow
habanalabs: add custom timeout flag per cs
habanalabs: improve utilization calculation
habanalabs: support legacy and new pll indexes
habanalabs: move relevant datapath work outside cs lock
habanalabs: avoid soft lockup bug upon mapping error
habanalabs/gaudi: Update async events header
habanalabs/gaudi: unsecure TPC cfg status registers
habanalabs/gaudi: always use single-msi mode
...
When async binder buffer got exhausted, some normal oneway transactions
will also be discarded and may cause system or application failures. By
that time, the binder debug information we dump may not be relevant to
the root cause. And this issue is difficult to debug if without the
backtrace of the thread sending spam.
This change will send BR_ONEWAY_SPAM_SUSPECT to userspace when oneway
spamming is detected, request to dump current backtrace. Oneway spamming
will be reported only once when exceeding the threshold (target process
dips below 80% of its oneway space, and current process is responsible for
either more than 50 transactions, or more than 50% of the oneway space).
And the detection will restart when the async buffer has returned to a
healthy state.
Acked-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Hang Lu <hangl@codeaurora.org>
Link: https://lore.kernel.org/r/1617961246-4502-3-git-send-email-hangl@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Callout devices are long-gone, but the ASYNC_SPLIT_TERMIOS flag was
never added to the deprecation mask.
Add it so that a warning is printed if it is ever used.
Fixes: 8a8ae62f8296 ("tty: warn on deprecated serial flags")
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210407095208.31838-7-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some kernel-internal ASYNC flags have been superseded by tty-port flags
and should no longer be used by kernel drivers.
Fix the misspelled "__KERNEL__" compile guards which failed their sole
purpose to break out-of-tree drivers that have not yet been updated.
Fixes: 5c0517fefc92 ("tty: core: Undefine ASYNC_* flags superceded by TTY_PORT* flags")
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210407095208.31838-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Conflicts:
MAINTAINERS
- keep Chandrasekar
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
- simple fix + trust the code re-added to param.c in -next is fine
include/linux/bpf.h
- trivial
include/linux/ethtool.h
- trivial, fix kdoc while at it
include/linux/skmsg.h
- move to relevant place in tcp.c, comment re-wrapped
net/core/skmsg.c
- add the sk = sk // sk = NULL around calls
net/tipc/crypto.c
- trivial
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
mac80211, wireless, and bpf trees. No scary regressions here
or in the works, but small fixes for 5.12 changes keep coming.
Current release - regressions:
- virtio: do not pull payload in skb->head
- virtio: ensure mac header is set in virtio_net_hdr_to_skb()
- Revert "net: correct sk_acceptq_is_full()"
- mptcp: revert "mptcp: provide subflow aware release function"
- ethernet: lan743x: fix ethernet frame cutoff issue
- dsa: fix type was not set for devlink port
- ethtool: remove link_mode param and derive link params
from driver
- sched: htb: fix null pointer dereference on a null new_q
- wireless: iwlwifi: Fix softirq/hardirq disabling in
iwl_pcie_enqueue_hcmd()
- wireless: iwlwifi: fw: fix notification wait locking
- wireless: brcmfmac: p2p: Fix deadlock introduced by avoiding
the rtnl dependency
Current release - new code bugs:
- napi: fix hangup on napi_disable for threaded napi
- bpf: take module reference for trampoline in module
- wireless: mt76: mt7921: fix airtime reporting and related
tx hangs
- wireless: iwlwifi: mvm: rfi: don't lock mvm->mutex when sending
config command
Previous releases - regressions:
- rfkill: revert back to old userspace API by default
- nfc: fix infinite loop, refcount & memory leaks in LLCP sockets
- let skb_orphan_partial wake-up waiters
- xfrm/compat: Cleanup WARN()s that can be user-triggered
- vxlan, geneve: do not modify the shared tunnel info when PMTU
triggers an ICMP reply
- can: fix msg_namelen values depending on CAN_REQUIRED_SIZE
- can: uapi: mark union inside struct can_frame packed
- sched: cls: fix action overwrite reference counting
- sched: cls: fix err handler in tcf_action_init()
- ethernet: mlxsw: fix ECN marking in tunnel decapsulation
- ethernet: nfp: Fix a use after free in nfp_bpf_ctrl_msg_rx
- ethernet: i40e: fix receiving of single packets in xsk zero-copy
mode
- ethernet: cxgb4: avoid collecting SGE_QBASE regs during traffic
Previous releases - always broken:
- bpf: Refuse non-O_RDWR flags in BPF_OBJ_GET
- bpf: Refcount task stack in bpf_get_task_stack
- bpf, x86: Validate computation of branch displacements
- ieee802154: fix many similar syzbot-found bugs
- fix NULL dereferences in netlink attribute handling
- reject unsupported operations on monitor interfaces
- fix error handling in llsec_key_alloc()
- xfrm: make ipv4 pmtu check honor ip header df
- xfrm: make hash generation lock per network namespace
- xfrm: esp: delete NETIF_F_SCTP_CRC bit from features for esp
offload
- ethtool: fix incorrect datatype in set_eee ops
- xdp: fix xdp_return_frame() kernel BUG throw for page_pool
memory model
- openvswitch: fix send of uninitialized stack memory in ct limit
reply
Misc:
- udp: add get handling for UDP_GRO sockopt
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes for 5.12-rc7, including fixes from can, ipsec,
mac80211, wireless, and bpf trees.
No scary regressions here or in the works, but small fixes for 5.12
changes keep coming.
Current release - regressions:
- virtio: do not pull payload in skb->head
- virtio: ensure mac header is set in virtio_net_hdr_to_skb()
- Revert "net: correct sk_acceptq_is_full()"
- mptcp: revert "mptcp: provide subflow aware release function"
- ethernet: lan743x: fix ethernet frame cutoff issue
- dsa: fix type was not set for devlink port
- ethtool: remove link_mode param and derive link params from driver
- sched: htb: fix null pointer dereference on a null new_q
- wireless: iwlwifi: Fix softirq/hardirq disabling in
iwl_pcie_enqueue_hcmd()
- wireless: iwlwifi: fw: fix notification wait locking
- wireless: brcmfmac: p2p: Fix deadlock introduced by avoiding the
rtnl dependency
Current release - new code bugs:
- napi: fix hangup on napi_disable for threaded napi
- bpf: take module reference for trampoline in module
- wireless: mt76: mt7921: fix airtime reporting and related tx hangs
- wireless: iwlwifi: mvm: rfi: don't lock mvm->mutex when sending
config command
Previous releases - regressions:
- rfkill: revert back to old userspace API by default
- nfc: fix infinite loop, refcount & memory leaks in LLCP sockets
- let skb_orphan_partial wake-up waiters
- xfrm/compat: Cleanup WARN()s that can be user-triggered
- vxlan, geneve: do not modify the shared tunnel info when PMTU
triggers an ICMP reply
- can: fix msg_namelen values depending on CAN_REQUIRED_SIZE
- can: uapi: mark union inside struct can_frame packed
- sched: cls: fix action overwrite reference counting
- sched: cls: fix err handler in tcf_action_init()
- ethernet: mlxsw: fix ECN marking in tunnel decapsulation
- ethernet: nfp: Fix a use after free in nfp_bpf_ctrl_msg_rx
- ethernet: i40e: fix receiving of single packets in xsk zero-copy
mode
- ethernet: cxgb4: avoid collecting SGE_QBASE regs during traffic
Previous releases - always broken:
- bpf: Refuse non-O_RDWR flags in BPF_OBJ_GET
- bpf: Refcount task stack in bpf_get_task_stack
- bpf, x86: Validate computation of branch displacements
- ieee802154: fix many similar syzbot-found bugs
- fix NULL dereferences in netlink attribute handling
- reject unsupported operations on monitor interfaces
- fix error handling in llsec_key_alloc()
- xfrm: make ipv4 pmtu check honor ip header df
- xfrm: make hash generation lock per network namespace
- xfrm: esp: delete NETIF_F_SCTP_CRC bit from features for esp
offload
- ethtool: fix incorrect datatype in set_eee ops
- xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory
model
- openvswitch: fix send of uninitialized stack memory in ct limit
reply
Misc:
- udp: add get handling for UDP_GRO sockopt"
* tag 'net-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (182 commits)
net: fix hangup on napi_disable for threaded napi
net: hns3: Trivial spell fix in hns3 driver
lan743x: fix ethernet frame cutoff issue
net: ipv6: check for validity before dereferencing cfg->fc_nlinfo.nlh
net: dsa: lantiq_gswip: Configure all remaining GSWIP_MII_CFG bits
net: dsa: lantiq_gswip: Don't use PHY auto polling
net: sched: sch_teql: fix null-pointer dereference
ipv6: report errors for iftoken via netlink extack
net: sched: fix err handler in tcf_action_init()
net: sched: fix action overwrite reference counting
Revert "net: sched: bump refcount for new action in ACT replace mode"
ice: fix memory leak of aRFS after resuming from suspend
i40e: Fix sparse warning: missing error code 'err'
i40e: Fix sparse error: 'vsi->netdev' could be null
i40e: Fix sparse error: uninitialized symbol 'ring'
i40e: Fix sparse errors in i40e_txrx.c
i40e: Fix parameters in aq_get_phy_register()
nl80211: fix beacon head validation
bpf, x86: Validate computation of branch displacements for x86-32
bpf, x86: Validate computation of branch displacements for x86-64
...
The store part was never implemented in the code and never been used
by the userspace applications.
We currently use the related parameters to a different purpose with
a defined union. However, there is no point in that and it is better
to just remove the union and the store parameters.
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
There is a need to allow to user to send command submissions with
custom timeout as some CS take longer than the max timeout that is
used by default.
Signed-off-by: Alon Mizrahi <amizrahi@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
