Merge branch 'next' into for-linus

Prepare input updates for 5.17 merge window.

Merge branch 'reset/of-get-optional-exclusive' of git://git.pengutronix.de/pza/linux into timers/drivers/next

"Add optional variant of of_reset_control_get_exclusive(). If the
requested reset is not

Merge branch 'reset/of-get-optional-exclusive' of git://git.pengutronix.de/pza/linux into timers/drivers/next

"Add optional variant of of_reset_control_get_exclusive(). If the
requested reset is not specified in the device tree, this function
returns NULL instead of an error."

This dependency is needed for the Generic Timer Module (a.k.a OSTM)
support for RZ/G2L.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

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Merge tag 'v5.15' into next

Sync up with the mainline to get the latest APIs and DT bindings.

Merge branch 'pruss-fix' into fixes

Merge in a fix for pruss reset issue caused by enabling pruss for am335x.

Merge tag 'v5.15-rc2' into spi-5.15

Linux 5.15-rc2

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

Catch-up on 5.15-rc1 and sync with drm-intel-gt-next
to prepare the PXP topic branch.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Merge drm/drm-next into drm-intel-gt-next

Close the divergence which has caused patches not to apply and
have a solid baseline for the PXP patches that Rodrigo will send
a topic branch PR for.

Sign

Merge drm/drm-next into drm-intel-gt-next

Close the divergence which has caused patches not to apply and
have a solid baseline for the PXP patches that Rodrigo will send
a topic branch PR for.

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

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

Kickstart new drm-misc-next cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge branch 'linus' into smp/urgent

Ensure that all usage sites of get/put_online_cpus() except for the
struggler in drivers/thermal are gone. So the last user and the deprecated
inlines can be rem

Merge branch 'linus' into smp/urgent

Ensure that all usage sites of get/put_online_cpus() except for the
struggler in drivers/thermal are gone. So the last user and the deprecated
inlines can be removed.

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Merge tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
"Core:

- Enable memcg accounting for various networking o

Merge tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
"Core:

- Enable memcg accounting for various networking objects.

BPF:

- Introduce bpf timers.

- Add perf link and opaque bpf_cookie which the program can read out
again, to be used in libbpf-based USDT library.

- Add bpf_task_pt_regs() helper to access user space pt_regs in
kprobes, to help user space stack unwinding.

- Add support for UNIX sockets for BPF sockmap.

- Extend BPF iterator support for UNIX domain sockets.

- Allow BPF TCP congestion control progs and bpf iterators to call
bpf_setsockopt(), e.g. to switch to another congestion control
algorithm.

Protocols:

- Support IOAM Pre-allocated Trace with IPv6.

- Support Management Component Transport Protocol.

- bridge: multicast: add vlan support.

- netfilter: add hooks for the SRv6 lightweight tunnel driver.

- tcp:
- enable mid-stream window clamping (by user space or BPF)
- allow data-less, empty-cookie SYN with TFO_SERVER_COOKIE_NOT_REQD
- more accurate DSACK processing for RACK-TLP

- mptcp:
- add full mesh path manager option
- add partial support for MP_FAIL
- improve use of backup subflows
- optimize option processing

- af_unix: add OOB notification support.

- ipv6: add IFLA_INET6_RA_MTU to expose MTU value advertised by the
router.

- mac80211: Target Wake Time support in AP mode.

- can: j1939: extend UAPI to notify about RX status.

Driver APIs:

- Add page frag support in page pool API.

- Many improvements to the DSA (distributed switch) APIs.

- ethtool: extend IRQ coalesce uAPI with timer reset modes.

- devlink: control which auxiliary devices are created.

- Support CAN PHYs via the generic PHY subsystem.

- Proper cross-chip support for tag_8021q.

- Allow TX forwarding for the software bridge data path to be
offloaded to capable devices.

Drivers:

- veth: more flexible channels number configuration.

- openvswitch: introduce per-cpu upcall dispatch.

- Add internet mix (IMIX) mode to pktgen.

- Transparently handle XDP operations in the bonding driver.

- Add LiteETH network driver.

- Renesas (ravb):
- support Gigabit Ethernet IP

- NXP Ethernet switch (sja1105):
- fast aging support
- support for "H" switch topologies
- traffic termination for ports under VLAN-aware bridge

- Intel 1G Ethernet
- support getcrosststamp() with PCIe PTM (Precision Time
Measurement) for better time sync
- support Credit-Based Shaper (CBS) offload, enabling HW traffic
prioritization and bandwidth reservation

- Broadcom Ethernet (bnxt)
- support pulse-per-second output
- support larger Rx rings

- Mellanox Ethernet (mlx5)
- support ethtool RSS contexts and MQPRIO channel mode
- support LAG offload with bridging
- support devlink rate limit API
- support packet sampling on tunnels

- Huawei Ethernet (hns3):
- basic devlink support
- add extended IRQ coalescing support
- report extended link state

- Netronome Ethernet (nfp):
- add conntrack offload support

- Broadcom WiFi (brcmfmac):
- add WPA3 Personal with FT to supported cipher suites
- support 43752 SDIO device

- Intel WiFi (iwlwifi):
- support scanning hidden 6GHz networks
- support for a new hardware family (Bz)

- Xen pv driver:
- harden netfront against malicious backends

- Qualcomm mobile
- ipa: refactor power management and enable automatic suspend
- mhi: move MBIM to WWAN subsystem interfaces

Refactor:

- Ambient BPF run context and cgroup storage cleanup.

- Compat rework for ndo_ioctl.

Old code removal:

- prism54 remove the obsoleted driver, deprecated by the p54 driver.

- wan: remove sbni/granch driver"

* tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1715 commits)
net: Add depends on OF_NET for LiteX's LiteETH
ipv6: seg6: remove duplicated include
net: hns3: remove unnecessary spaces
net: hns3: add some required spaces
net: hns3: clean up a type mismatch warning
net: hns3: refine function hns3_set_default_feature()
ipv6: remove duplicated 'net/lwtunnel.h' include
net: w5100: check return value after calling platform_get_resource()
net/mlxbf_gige: Make use of devm_platform_ioremap_resourcexxx()
net: mdio: mscc-miim: Make use of the helper function devm_platform_ioremap_resource()
net: mdio-ipq4019: Make use of devm_platform_ioremap_resource()
fou: remove sparse errors
ipv4: fix endianness issue in inet_rtm_getroute_build_skb()
octeontx2-af: Set proper errorcode for IPv4 checksum errors
octeontx2-af: Fix static code analyzer reported issues
octeontx2-af: Fix mailbox errors in nix_rss_flowkey_cfg
octeontx2-af: Fix loop in free and unmap counter
af_unix: fix potential NULL deref in unix_dgram_connect()
dpaa2-eth: Replace strlcpy with strscpy
octeontx2-af: Use NDC TX for transmit packet data
...

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

Daniel Borkmann says:

====================
bpf-next 2021-08-31

We've added 116 non-merge commits during the last 17 day(s) which

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

Daniel Borkmann says:

====================
bpf-next 2021-08-31

We've added 116 non-merge commits during the last 17 day(s) which contain
a total of 126 files changed, 6813 insertions(+), 4027 deletions(-).

The main changes are:

1) Add opaque bpf_cookie to perf link which the program can read out again,
to be used in libbpf-based USDT library, from Andrii Nakryiko.

2) Add bpf_task_pt_regs() helper to access userspace pt_regs, from Daniel Xu.

3) Add support for UNIX stream type sockets for BPF sockmap, from Jiang Wang.

4) Allow BPF TCP congestion control progs to call bpf_setsockopt() e.g. to switch
to another congestion control algorithm during init, from Martin KaFai Lau.

5) Extend BPF iterator support for UNIX domain sockets, from Kuniyuki Iwashima.

6) Allow bpf_{set,get}sockopt() calls from setsockopt progs, from Prankur Gupta.

7) Add bpf_get_netns_cookie() helper for BPF_PROG_TYPE_{SOCK_OPS,CGROUP_SOCKOPT}
progs, from Xu Liu and Stanislav Fomichev.

8) Support for __weak typed ksyms in libbpf, from Hao Luo.

9) Shrink struct cgroup_bpf by 504 bytes through refactoring, from Dave Marchevsky.

10) Fix a smatch complaint in verifier's narrow load handling, from Andrey Ignatov.

11) Fix BPF interpreter's tail call count limit, from Daniel Borkmann.

12) Big batch of improvements to BPF selftests, from Magnus Karlsson, Li Zhijian,
Yucong Sun, Yonghong Song, Ilya Leoshkevich, Jussi Maki, Ilya Leoshkevich, others.

13) Another big batch to revamp XDP samples in order to give them consistent look
and feel, from Kumar Kartikeya Dwivedi.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (116 commits)
MAINTAINERS: Remove self from powerpc BPF JIT
selftests/bpf: Fix potential unreleased lock
samples: bpf: Fix uninitialized variable in xdp_redirect_cpu
selftests/bpf: Reduce more flakyness in sockmap_listen
bpf: Fix bpf-next builds without CONFIG_BPF_EVENTS
bpf: selftests: Add dctcp fallback test
bpf: selftests: Add connect_to_fd_opts to network_helpers
bpf: selftests: Add sk_state to bpf_tcp_helpers.h
bpf: tcp: Allow bpf-tcp-cc to call bpf_(get|set)sockopt
selftests: xsk: Preface options with opt
selftests: xsk: Make enums lower case
selftests: xsk: Generate packets from specification
selftests: xsk: Generate packet directly in umem
selftests: xsk: Simplify cleanup of ifobjects
selftests: xsk: Decrease sending speed
selftests: xsk: Validate tx stats on tx thread
selftests: xsk: Simplify packet validation in xsk tests
selftests: xsk: Rename worker_* functions that are not thread entry points
selftests: xsk: Disassociate umem size with packets sent
selftests: xsk: Remove end-of-test packet
...
====================

Link: https://lore.kernel.org/r/20210830225618.11634-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Merge branch 'Improve XDP samples usability and output'

Kumar Kartikeya says:

====================

This set revamps XDP samples related to redirection to show better output and
implement missing f

Merge branch 'Improve XDP samples usability and output'

Kumar Kartikeya says:

====================

This set revamps XDP samples related to redirection to show better output and
implement missing features consolidating all their differences and giving them a
consistent look and feel, by implementing common features and command line
options. Some of the TODO items like reporting redirect error numbers
(ENETDOWN, EINVAL, ENOSPC, etc.) have also been implemented.

Some of the features are:
* Received packet statistics
* xdp_redirect/xdp_redirect_map tracepoint statistics
* xdp_redirect_err/xdp_redirect_map_err tracepoint statistics (with support for
showing exact errno)
* xdp_cpumap_enqueue/xdp_cpumap_kthread tracepoint statistics
* xdp_devmap_xmit tracepoint statistics
* xdp_exception tracepoint statistics
* Per ifindex pair devmap_xmit stats shown dynamically (for xdp_monitor) to
decompose the total.
* Use of BPF skeleton and BPF static linking to share BPF programs.
* Use of vmlinux.h and tp_btf for raw_tracepoint support.
* Removal of redundant -N/--native-mode option (enforced by default now)
* ... and massive cleanups all over the place.

All tracepoints also use raw_tp now, and tracepoints like xdp_redirect
are only enabled when requested explicitly to capture successful redirection
statistics.

The set of programs converted as part of this series are:
* xdp_redirect_cpu
* xdp_redirect_map_multi
* xdp_redirect_map
* xdp_redirect
* xdp_monitor

Explanation of the output:

There is now a concise output mode by default that shows primarily four fields:
rx/s Number of packets received per second
redir/s Number of packets successfully redirected per second
err,drop/s Aggregated count of errors per second (including dropped packets)
xmit/s Number of packets transmitted on the output device per second

Some examples:
; sudo ./xdp_redirect_map veth0 veth1 -s
Redirecting from veth0 (ifindex 15; driver veth) to veth1 (ifindex 14; driver veth)
veth0->veth1 0 rx/s 0 redir/s 0 err,drop/s 0 xmit/s
veth0->veth1 9,998,660 rx/s 9,998,658 redir/s 0 err,drop/s 9,998,654 xmit/s
...

There is also a verbose mode, that can also be enabled by default using -v (--verbose).
The output mode can be switched dynamically at runtime using Ctrl + \ (SIGQUIT).

To make the concise output more useful, the errors that occur are expanded inline
(as if verbose mode was enabled) to let the user pin down the source of the
problem without having to clutter output (or possibly miss it) or always use verbose mode.

For instance, let's consider a case where the output device link state is set to
down while redirection is happening:

[...]
veth0->veth1 24,503,376 rx/s 0 err,drop/s 24,503,372 xmit/s
veth0->veth1 25,044,775 rx/s 0 err,drop/s 25,044,783 xmit/s
veth0->veth1 25,263,046 rx/s 4 err,drop/s 25,263,028 xmit/s
redirect_err 4 error/s
ENETDOWN 4 error/s
[...]

The same holds for xdp_exception actions.

An example of how a complete xdp_redirect_map session would look:

; sudo ./xdp_redirect_map veth0 veth1
Redirecting from veth0 (ifindex 5; driver veth) to veth1 (ifindex 4; driver veth)
veth0->veth1 7,411,506 rx/s 0 err,drop/s 7,411,470 xmit/s
veth0->veth1 8,931,770 rx/s 0 err,drop/s 8,931,771 xmit/s
^\
veth0->veth1 8,787,295 rx/s 0 err,drop/s 8,787,325 xmit/s
receive total 8,787,295 pkt/s 0 drop/s 0 error/s
cpu:7 8,787,295 pkt/s 0 drop/s 0 error/s
redirect_err 0 error/s
xdp_exception 0 hit/s
xmit veth0->veth1 8,787,325 xmit/s 0 drop/s 0 drv_err/s 2.00 bulk-avg
cpu:7 8,787,325 xmit/s 0 drop/s 0 drv_err/s 2.00 bulk-avg

veth0->veth1 8,842,610 rx/s 0 err,drop/s 8,842,606 xmit/s
receive total 8,842,610 pkt/s 0 drop/s 0 error/s
cpu:7 8,842,610 pkt/s 0 drop/s 0 error/s
redirect_err 0 error/s
xdp_exception 0 hit/s
xmit veth0->veth1 8,842,606 xmit/s 0 drop/s 0 drv_err/s 2.00 bulk-avg
cpu:7 8,842,606 xmit/s 0 drop/s 0 drv_err/s 2.00 bulk-avg

^C
Packets received : 33,973,181
Average packets/s : 4,246,648
Packets transmitted : 33,973,172
Average transmit/s : 4,246,647

The xdp_redirect tracepoint (for success stats) needs to be enabled explicitly
using --stats/-s. Documentation for entire output and options is provided when
user specifies --help/-h with a sample.

Changelog:
----------
v3 -> v4:
v3: https://lore.kernel.org/bpf/20210728165552.435050-1-memxor@gmail.com

* Address all feedback from Daniel
* Use READ_ONCE/WRITE_ONCE from linux/compiler.h (cannot directly include
due to conflicts with vmlinux.h)
* Fix MAX_CPUS hardcoding by switching to mmapable array maps, that are
resized based on the value of libbpf_num_possible_cpus
* s/ELEMENTS_OF/ARRAY_SIZE/g
* Use tools/include/linux/hashtable.h
* Coding style fixes
* Remove hyperlinks for tracepoints
* Split into smaller reviewable changes
* Restore support for specifying custom xdp_redirect_cpu cpumap prog with some
enhancements, including built-in programs for common actions (pass, drop,
redirect). By default, cpumap prog is now disabled.
* Misc bug fixes all over the place

The printing stuff is a lot more basic without hyperlink support, hence it
has not been exported into a more general facility.

v2 -> v3
v2: https://lore.kernel.org/bpf/20210721212833.701342-1-memxor@gmail.com

* Address all feedback from Andrii
* Replace usage of libbpf hashmap (internal API) with custom one
* Rename ATOMIC_* macros to NO_TEAR_* to better reflect their use
* Use size_t as a portable word sized data type
* Set libbpf_set_strict_mode
* Invert conditions in BPF programs to exit early and reduce nesting
* Use canonical SEC("xdp") naming for all XDP BPF progams
* Add missing help description for cpumap enqueue and kthread tracepoints
* Move private struct declarations from xdp_sample_user.h to .c file
* Improve help output for cpumap enqueue and cpumap kthread tracepoints
* Fix a bug where keys array for BPF_MAP_LOOKUP_BATCH is overallocated
* Fix some conditions for printing stats (earlier only checked pps, now pps,
drop, err and print if any is greater than zero)
* Fix alloc_stats_record to properly return and cleanup allocated memory on
allocation failure instead of calling exit(3)
* Bump bpf_map_lookup_batch count to 32 to reduce lookup time with multiple
devices in map
* Fix a bug where devmap_xmit_multi stats are not printed when previous record
is missing (i.e. when the first time stats are printed), by simply using a
dummy record that is zeroed out
* Also print per-CPU counts for devmap_xmit_multi which we collect already
* Change mac_map to be BPF_MAP_TYPE_HASH instead of array to prevent resizing
to a large size when max_ifindex is high, in xdp_redirect_map_multi
* Fix instance of strerror(errno) in sample_install_xdp to use saved errno
* Provide a usage function from samples helper
* Provide a fix where incorrect stats are shown for parallel sessions of
xdp_redirect_* samples by introducing matching support for input device(s),
output device(s) and cpumap map id for enqueue and kthread stats.
Only xdp_monitor doesn't filter stats, all others do.

RFC (v1) -> v2
RFC (v1): https://lore.kernel.org/bpf/20210528235250.2635167-1-memxor@gmail.com

* Address all feedback from Andrii
* Use BPF static linking
* Use vmlinux.h
* Use BPF_PROG macro
* Use global variables instead of maps
* Use of tp_btf for raw_tracepoint progs
* Switch to timerfd for polling
* Use libbpf hashmap for maintaing device sets for per ifindex pair
devmap_xmit stats
* Fix Makefile to specify object dependencies properly
* Use in-tree bpftool
* ... misc fixes and cleanups all over the place
====================

Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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samples: bpf: Add basic infrastructure for XDP samples

This file implements some common helpers to consolidate differences in
features and functionality between the various XDP samples and give them

samples: bpf: Add basic infrastructure for XDP samples

This file implements some common helpers to consolidate differences in
features and functionality between the various XDP samples and give them
a consistent look, feel, and reporting capabilities.

This commit only adds support for receive statistics, which does not
rely on any tracepoint, but on the XDP program installed on the device
by each XDP redirect sample.

Some of the key features are:
* A concise output format accompanied by helpful text explaining its
fields.
* An elaborate output format building upon the concise one, and folding
out details in case of errors and staying out of view otherwise.
* Printing driver names for devices redirecting packets.
* Getting mac address for interface.
* Printing summarized total statistics for the entire session.
* Ability to dynamically switch between concise and verbose mode, using
SIGQUIT (Ctrl + \).

In later patches, the support will be extended for each tracepoint with
its own custom output in concise and verbose mode.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210821002010.845777-4-memxor@gmail.com

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