tools: bpftool: add simple perf event output reader

Users of BPF sooner or later discover perf_event_output() helpers
and BPF_MAP_TYPE_PERF_EVENT_ARRAY. Dumping this array type is
not possible, how

tools: bpftool: add simple perf event output reader

Users of BPF sooner or later discover perf_event_output() helpers
and BPF_MAP_TYPE_PERF_EVENT_ARRAY. Dumping this array type is
not possible, however, we can add simple reading of perf events.
Create a new event_pipe subcommand for maps, this sub command
will only work with BPF_MAP_TYPE_PERF_EVENT_ARRAY maps.

Parts of the code from samples/bpf/trace_output_user.c.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Merge drm/drm-next into drm-intel-next-queued

Need d224985a5e31 ("sched/wait, drivers/drm: Convert wait_on_atomic_t()
usage to the new wait_var_event() API") in dinq to be able to fix
https://bugs.f

Merge drm/drm-next into drm-intel-next-queued

Need d224985a5e31 ("sched/wait, drivers/drm: Convert wait_on_atomic_t()
usage to the new wait_var_event() API") in dinq to be able to fix
https://bugs.freedesktop.org/show_bug.cgi?id=106085.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

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Merge tag 'v4.17-rc3' into apparmor-next

Linux v4.17-rc3

Merge in v4.17 for LSM updates

Signed-off-by: John Johansen <john.johansen@canonical.com>

Merge tag 'v4.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fbdev-for-next

Linux 4.17-rc2

Merge tag 'v4.17-rc2' into next-general

Sync to Linux 4.17-rc2 for developers.

Back merge 'drm-intel-fixes' into gvt-fixes

Need for 4.17-rc1

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

Merge branch 'next' into for-linus

Prepare input updates for 4.17 merge window.

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

1) Support offloading wireless authentication to userspace via
NL80211_CMD_EXTERNA

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

1) Support offloading wireless authentication to userspace via
NL80211_CMD_EXTERNAL_AUTH, from Srinivas Dasari.

2) A lot of work on network namespace setup/teardown from Kirill Tkhai.
Setup and cleanup of namespaces now all run asynchronously and thus
performance is significantly increased.

3) Add rx/tx timestamping support to mv88e6xxx driver, from Brandon
Streiff.

4) Support zerocopy on RDS sockets, from Sowmini Varadhan.

5) Use denser instruction encoding in x86 eBPF JIT, from Daniel
Borkmann.

6) Support hw offload of vlan filtering in mvpp2 dreiver, from Maxime
Chevallier.

7) Support grafting of child qdiscs in mlxsw driver, from Nogah
Frankel.

8) Add packet forwarding tests to selftests, from Ido Schimmel.

9) Deal with sub-optimal GSO packets better in BBR congestion control,
from Eric Dumazet.

10) Support 5-tuple hashing in ipv6 multipath routing, from David Ahern.

11) Add path MTU tests to selftests, from Stefano Brivio.

12) Various bits of IPSEC offloading support for mlx5, from Aviad
Yehezkel, Yossi Kuperman, and Saeed Mahameed.

13) Support RSS spreading on ntuple filters in SFC driver, from Edward
Cree.

14) Lots of sockmap work from John Fastabend. Applications can use eBPF
to filter sendmsg and sendpage operations.

15) In-kernel receive TLS support, from Dave Watson.

16) Add XDP support to ixgbevf, this is significant because it should
allow optimized XDP usage in various cloud environments. From Tony
Nguyen.

17) Add new Intel E800 series "ice" ethernet driver, from Anirudh
Venkataramanan et al.

18) IP fragmentation match offload support in nfp driver, from Pieter
Jansen van Vuuren.

19) Support XDP redirect in i40e driver, from Björn Töpel.

20) Add BPF_RAW_TRACEPOINT program type for accessing the arguments of
tracepoints in their raw form, from Alexei Starovoitov.

21) Lots of striding RQ improvements to mlx5 driver with many
performance improvements, from Tariq Toukan.

22) Use rhashtable for inet frag reassembly, from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1678 commits)
net: mvneta: improve suspend/resume
net: mvneta: split rxq/txq init and txq deinit into SW and HW parts
ipv6: frags: fix /proc/sys/net/ipv6/ip6frag_low_thresh
net: bgmac: Fix endian access in bgmac_dma_tx_ring_free()
net: bgmac: Correctly annotate register space
route: check sysctl_fib_multipath_use_neigh earlier than hash
fix typo in command value in drivers/net/phy/mdio-bitbang.
sky2: Increase D3 delay to sky2 stops working after suspend
net/mlx5e: Set EQE based as default TX interrupt moderation mode
ibmvnic: Disable irqs before exiting reset from closed state
net: sched: do not emit messages while holding spinlock
vlan: also check phy_driver ts_info for vlan's real device
Bluetooth: Mark expected switch fall-throughs
Bluetooth: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for BTUSB_QCA_ROME
Bluetooth: btrsi: remove unused including <linux/version.h>
Bluetooth: hci_bcm: Remove DMI quirk for the MINIX Z83-4
sh_eth: kill useless check in __sh_eth_get_regs()
sh_eth: add sh_eth_cpu_data::no_xdfar flag
ipv6: factorize sk_wmem_alloc updates done by __ip6_append_data()
ipv4: factorize sk_wmem_alloc updates done by __ip_append_data()
...

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Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2018-03-21

The following pull-request contains BPF updates for yo

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2018-03-21

The following pull-request contains BPF updates for your *net-next* tree.

The main changes are:

1) Add a BPF hook for sendmsg and sendfile by reusing the ULP infrastructure
and sockmap. Three helpers are added along with this, bpf_msg_apply_bytes(),
bpf_msg_cork_bytes(), and bpf_msg_pull_data(). The first is used to tell
for how many bytes the verdict should be applied to, the second to tell
that x bytes need to be queued first to retrigger the BPF program for a
verdict, and the third helper is mainly for the sendfile case to pull in
data for making it private for reading and/or writing, from John.

2) Improve address to symbol resolution of user stack traces in BPF stackmap.
Currently, the latter stores the address for each entry in the call trace,
however to map these addresses to user space files, it is necessary to
maintain the mapping from these virtual addresses to symbols in the binary
which is not practical for system-wide profiling. Instead, this option for
the stackmap rather stores the ELF build id and offset for the call trace
entries, from Song.

3) Add support that allows BPF programs attached to perf events to read the
address values recorded with the perf events. They are requested through
PERF_SAMPLE_ADDR via perf_event_open(). Main motivation behind it is to
support building memory or lock access profiling and tracing tools with
the help of BPF, from Teng.

4) Several improvements to the tools/bpf/ Makefiles. The 'make bpf' in the
tools directory does not provide the standard quiet output except for
bpftool and it also does not respect specifying a build output directory.
'make bpf_install' command neither respects specified destination nor
prefix, all from Jiri. In addition, Jakub fixes several other minor issues
in the Makefiles on top of that, e.g. fixing dependency paths, phony
targets and more.

5) Various doc updates e.g. add a comment for BPF fs about reserved names
to make the dentry lookup from there a bit more obvious, and a comment
to the bpf_devel_QA file in order to explain the diff between native
and bpf target clang usage with regards to pointer size, from Quentin
and Daniel.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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Merge branch 'bpf-tools-build-improvements'

Jakub Kicinski says:

====================
As promised this series addresses nits and minor issues in tools/bpf
build infra. One GCC-7 warning which is n

Merge branch 'bpf-tools-build-improvements'

Jakub Kicinski says:

====================
As promised this series addresses nits and minor issues in tools/bpf
build infra. One GCC-7 warning which is nice to get rid of. Dependencies
when built with OUTPUT are fixed. make clean will now remove the
FEATURE-DUMP.* files. PHONY target is also updated to match reality.
====================

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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tools: bpf: remove feature detection output

bpf tools use feature detection for libbfd dependency, clean up
the output files on make clean.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.c

tools: bpf: remove feature detection output

bpf tools use feature detection for libbfd dependency, clean up
the output files on make clean.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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tools: bpftool: fix dependency file path

Auto-generated dependency files are in the OUTPUT directory,
we need to include them from there. This fixes object files
not being rebuilt after header chan

tools: bpftool: fix dependency file path

Auto-generated dependency files are in the OUTPUT directory,
we need to include them from there. This fixes object files
not being rebuilt after header changes.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Merge branch 'bpf-tools-makefile-improvements'

Jiri Benc says:

====================
Currently, 'make bpf' in the tools/ directory does not provide the
standard quiet output except for bpftool (whic

Merge branch 'bpf-tools-makefile-improvements'

Jiri Benc says:

====================
Currently, 'make bpf' in the tools/ directory does not provide the
standard quiet output except for bpftool (which is however listed
with a wrong directory). Worse, it does not respect the build output
directory.

The 'make bpf_install' does not work as one would expect, either.
It installs unconditionally to /usr/bin without respecting DESTDIR
and prefix.

This patchset improves that behavior.
====================

Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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tools: bpftool: silence 'missing initializer' warnings

When building bpf tool, gcc emits piles of warnings:

prog.c: In function ‘prog_fd_by_tag’:
prog.c:101:9: warning: missing initializer for fiel

tools: bpftool: silence 'missing initializer' warnings

When building bpf tool, gcc emits piles of warnings:

prog.c: In function ‘prog_fd_by_tag’:
prog.c:101:9: warning: missing initializer for field ‘type’ of ‘struct bpf_prog_info’ [-Wmissing-field-initializers]
struct bpf_prog_info info = {};
^
In file included from /home/storage/jbenc/git/net-next/tools/lib/bpf/bpf.h:26:0,
from prog.c:47:
/home/storage/jbenc/git/net-next/tools/include/uapi/linux/bpf.h:925:8: note: ‘type’ declared here
__u32 type;
^

As these warnings are not useful, switch them off.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Merge tag 'v4.16-rc4' into next

Sync up with mainline to bring in RAVE MFD device core.

Merge tag 'v4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fbdev-for-next

Linux 4.16-rc4

Merge drm-next into drm-intel-next-queued (this time for real)

To pull in the HDCP changes, especially wait_for changes to drm/i915
that Chris wants to build on top of.

Signed-off-by: Joonas Lahtin

Merge drm-next into drm-intel-next-queued (this time for real)

To pull in the HDCP changes, especially wait_for changes to drm/i915
that Chris wants to build on top of.

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

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Merge tag 'v4.16-rc2' into next-general

Sync to Linux 4.16-rc2 for developers to work against.

Merge tag 'v4.16-rc2' into locking/core, to refresh the branch

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge branch 'perf/urgent' into perf/core, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge airlied/drm-next into drm-misc-next

Backmerge 4.15 and hdcp topic branch

Signed-off-by: Sean Paul <seanpaul@chromium.org>

Merge tag 'irqchip-4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent

Pull irqchip updates for 4.16-rc2 from Marc Zyngier

- A MIPS GIC fix for spurious, mas

Merge tag 'irqchip-4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent

Pull irqchip updates for 4.16-rc2 from Marc Zyngier

- A MIPS GIC fix for spurious, masked interrupts
- A fix for a subtle IPI bug in GICv3
- Do not probe GICv3 ITSs that are marked as disabled
- Multi-MSI support for GICv2m
- Various cleanups

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Merge branch 'topic/component-platform' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-samsung

Merge branch 'linus' into x86/urgent, to pick up dependent commits

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge remote-tracking branches 'asoc/fix/compress', 'asoc/fix/core', 'asoc/fix/dapm', 'asoc/fix/mtk' and 'asoc/fix/stm' into asoc-next