Git Repo - linux.git/log

Bluetooth: hci_vhci: Add force_suspend entry

This adds force_suspend which can be used to force the controller into
suspend/resume state.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

libbpf: Make gen_loader data aligned.

Align gen_loader data to 8 byte boundary to make sure union bpf_attr,
bpf_insns and other structs are aligned.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210927145941.1383001-9-memxor@gmail.com

bpf: selftests: Fix fd cleanup in get_branch_snapshot

Cleanup code uses while (cpu++ < cpu_cnt) for closing fds, which means
it starts iterating from 1 for closing fds. If the first fd is -1, it
skips over it and closes garbage fds (typically zero) in the remaining
array. This leads to test failures for future tests when they end up
storing fd 0 (as the slot becomes free due to close(0)) in ldimm64's BTF
fd, ending up trying to match module BTF id with vmlinux.

This was observed as spurious CI failure for the ksym_module_libbpf and
module_attach tests. The test ends up closing fd 0 and breaking libbpf's
assumption that module BTF fd will always be > 0, which leads to the
kernel thinking that we are pointing to a BTF ID in vmlinux BTF.

Fixes: 025bd7c753aa (selftests/bpf: Add test for bpf_get_branch_snapshot)
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20210927145941.1383001-12-memxor@gmail.com

MAINTAINERS: Update Mun Yew Tham as Altera Pio Driver maintainer

Update Altera Pio Driver maintainer's email from <joyce.ooi@intel.com> to <mun.yew.tham@intel.com>

Signed-off-by: Mun Yew Tham <mun.yew.tham@intel.com>
Acked-by: Joyce Ooi <joyce.ooi@intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>

MAINTAINERS: update my email address

My professional situation changes soon. Update my email address.

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>

gpio: pca953x: do not ignore i2c errors

Per gpio_chip interface, error shall be proparated to the caller.

Attempt to silent diagnostics by returning zero (as written in the
comment) is plain wrong, because the zero return can be interpreted by
the caller as the gpio value.

Cc: stable@vger.kernel.org
Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>

devlink: Add missed notifications iterators

The commit mentioned in Fixes line missed a couple of notifications that
were registered before devlink_register() and should be delayed too.

As such, the too early placed WARN_ON() check spotted it.

WARNING: CPU: 1 PID: 6540 at net/core/devlink.c:5158 devlink_nl_region_notify+0x184/0x1e0 net/core/devlink.c:5158
Modules linked in:
CPU: 1 PID: 6540 Comm: syz-executor.0 Not tainted 5.15.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:devlink_nl_region_notify+0x184/0x1e0 net/core/devlink.c:5158
Code: 38 41 b8 c0 0c 00 00 31 d2 48 89 ee 4c 89 e7 e8 72 1a 26 00 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e e9 01 bd 41 fa
e8 fc bc 41 fa <0f> 0b e9 f7 fe ff ff e8 f0 bc 41 fa 0f 0b eb da 4c 89 e7 e8 c4 18
RSP: 0018:ffffc90002d6f658 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801f08d580 RSI: ffffffff87344e94 RDI: 0000000000000003
RBP: ffff88801ee42100 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff87344d8a R11: 0000000000000000 R12: ffff88801c1dc000
R13: 0000000000000000 R14: 000000000000002c R15: ffff88801c1dc070
FS: 0000555555e8e400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dd7c590310 CR3: 0000000069a09000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
devlink_region_create+0x39f/0x4c0 net/core/devlink.c:10327
nsim_dev_dummy_region_init drivers/net/netdevsim/dev.c:481 [inline]
nsim_dev_probe+0x5f6/0x1150 drivers/net/netdevsim/dev.c:1479
call_driver_probe drivers/base/dd.c:517 [inline]
really_probe+0x245/0xcc0 drivers/base/dd.c:596
__driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781
__device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:898
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
__device_attach+0x228/0x4a0 drivers/base/dd.c:969
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
device_add+0xc35/0x21b0 drivers/base/core.c:3359
nsim_bus_dev_new drivers/net/netdevsim/bus.c:435 [inline]
new_device_store+0x48b/0x770 drivers/net/netdevsim/bus.c:302
bus_attr_store+0x72/0xa0 drivers/base/bus.c:122
sysfs_kf_write+0x110/0x160 fs/sysfs/file.c:139
kernfs_fop_write_iter+0x342/0x500 fs/kernfs/file.c:296
call_write_iter include/linux/fs.h:2163 [inline]
new_sync_write+0x429/0x660 fs/read_write.c:507
vfs_write+0x7cf/0xae0 fs/read_write.c:594
ksys_write+0x12d/0x250 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f328409d3ef
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01
00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48
RSP: 002b:00007ffdc6851140 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f328409d3ef
RDX: 0000000000000003 RSI: 00007ffdc6851190 RDI: 0000000000000004
RBP: 0000000000000004 R08: 0000000000000000 R09: 00007ffdc68510e0
R10: 0000000000000000 R11: 0000000000000293 R12: 00007f3284144971
R13: 00007ffdc6851190 R14: 0000000000000000 R15: 00007ffdc6851860

Fixes: cf530217408e ("devlink: Notify users when objects are accessible")
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/2ed1159291f2a589b013914f2b60d8172fc525c1.1632925030.git.leonro@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge tag 'sound-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
"This became a slightly large collection of changes, partly because
  I've been off in the last weeks. Most of changes are small and
  scattered while a bit big change is found in HD-audio Realtek codec
  driver; it's a very device-specific fix that has been long wanted, so
  I decided to pick up although it's in the middle RC.

  Some highlights:

   - A new guard ioctl for ALSA rawmidi API to avoid the misuse of the
     new timestamp framing mode; it's for a regression fix

   - HD-audio: a revert of the 5.15 change that might work badly, new
     quirks for Lenovo Legion & co, a follow-up fix for CS8409

   - ASoC: lots of SOF-related fixes, fsl component fixes, corrections
     of mediatek drivers

   - USB-audio: fix for the PM resume

   - FireWire: oxfw and motu fixes"

* tag 'sound-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (25 commits)
  ALSA: pcsp: Make hrtimer forwarding more robust
  ALSA: rawmidi: introduce SNDRV_RAWMIDI_IOCTL_USER_PVERSION
  ALSA: firewire-motu: fix truncated bytes in message tracepoints
  ASoC: SOF: trace: Omit error print when waking up trace sleepers
  ASoC: mediatek: mt8195: remove wrong fixup assignment on HDMITX
  ASoC: SOF: loader: Re-phrase the missing firmware error to avoid duplication
  ASoC: SOF: loader: release_firmware() on load failure to avoid batching
  ALSA: hda/cs8409: Setup Dolphin Headset Mic as Phantom Jack
  ALSA: pcxhr: "fix" PCXHR_REG_TO_PORT definition
  ASoC: SOF: imx: imx8m: Bar index is only valid for IRAM and SRAM types
  ASoC: SOF: imx: imx8: Bar index is only valid for IRAM and SRAM types
  ASoC: SOF: Fix DSP oops stack dump output contents
  ALSA: hda/realtek: Quirks to enable speaker output for Lenovo Legion 7i 15IMHG05, Yoga 7i 14ITL5/15ITL5, and 13s Gen2 laptops.
  ALSA: usb-audio: Unify mixer resume and reset_resume procedure
  Revert "ALSA: hda: Drop workaround for a hang at shutdown again"
  ALSA: oxfw: fix transmission method for Loud models based on OXFW971
  ASoC: mediatek: common: handle NULL case in suspend/resume function
  ASoC: fsl_xcvr: register platform component before registering cpu dai
  ASoC: fsl_spdif: register platform component before registering cpu dai
  ASoC: fsl_micfil: register platform component before registering cpu dai
  ...

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
"This contains fixes for a resource leak in ccp as well as stack
  corruption in x86/sm4"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: x86/sm4 - Fix frame pointer stack corruption
  crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd()

Bluetooth: Make use of hci_{suspend,resume}_dev on suspend notifier

This moves code from hci_suspend_notifier to hci_{suspend,resume}_dev
since some driver may handle pm directly using
HCI_QUIRK_NO_SUSPEND_NOTIFIER they would instead call
hci_{suspend,resume}_dev directly and we want that to have the same
behavior regardless of where pm is being handled.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

xsk: Fix clang build error in __xp_alloc

Fix a build error with clang in __xp_alloc():

  [...]
  net/xdp/xsk_buff_pool.c:465:15: error: variable 'xskb' is uninitialized
  when used here [-Werror,-Wuninitialized]
                          xp_release(xskb);
                                     ^~~~

This is correctly detected by clang, but not gcc. In fact, the xp_release()
statement should not be there at all in the refactored code, just remove it.

Fixes: 94033cd8e73b ("xsk: Optimize for aligned case")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210929061403.8587-1-magnus.karlsson@gmail.com

gve: Use kvcalloc() instead of kvzalloc()

Use 2-factor argument form kvcalloc() instead of kvzalloc().

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/datagram.c: remove superfluous header files from datagram.c

datagram.c hasn't use any macro or function declared in linux/ip.h.
Thus, these files can be removed from datagram.c safely without
affecting the compilation of the net/ipv4 module

Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/dsa/tag_ksz.c: remove superfluous headers

tag_ksz.c hasn't use any macro or function declared in linux/slab.h.
Thus, these files can be removed from tag_ksz.c safely without
affecting the compilation of the ./net/dsa module

Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/dsa/tag_8021q.c: remove superfluous headers

tag_8021q.c hasn't use any macro or function declared in linux/if_bridge.h.
Thus, these files can be removed from tag_8021q.c safely without
affecting the compilation of the ./net/dsa module

Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: phy: bcm7xxx: Fixed indirect MMD operations

When EEE support was added to the 28nm EPHY it was assumed that it would
be able to support the standard clause 45 over clause 22 register access
method. It turns out that the PHY does not support that, which is the
very reason for using the indirect shadow mode 2 bank 3 access method.

Implement {read,write}_mmd to allow the standard PHY library routines
pertaining to EEE querying and configuration to work correctly on these
PHYs. This forces us to implement a __phy_set_clr_bits() function that
does not grab the MDIO bus lock since the PHY driver's {read,write}_mmd
functions are always called with that lock held.

Fixes: 83ee102a6998 ("net: phy: bcm7xxx: add support for 28nm EPHY")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/mlx4: Use array_size() helper in copy_to_user()

Use array_size() helper instead of the open-coded version in
copy_to_user(). These sorts of multiplication factors need
to be wrapped in array_size().

Link: https://github.com/KSPP/linux/issues/160
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: bridge: Use array_size() helper in copy_to_user()

Use array_size() helper instead of the open-coded version in
copy_to_user(). These sorts of multiplication factors need
to be wrapped in array_size().

Link: https://github.com/KSPP/linux/issues/160
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

ethtool: ioctl: Use array_size() helper in copy_{from,to}_user()

Use array_size() helper instead of the open-coded version in
copy_{from,to}_user(). These sorts of multiplication factors
need to be wrapped in array_size().

Link: https://github.com/KSPP/linux/issues/160
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'hns3-fixes'

Guangbin Huang says:

====================
net: hns3: add some fixes for -net

This series adds some fixes for the HNS3 ethernet driver.
====================

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

net: hns3: disable firmware compatible features when uninstall PF

Currently, the firmware compatible features are enabled in PF driver
initialization process, but they are not disabled in PF driver
deinitialization process and firmware keeps these features in enabled
status.

In this case, if load an old PF driver (for example, in VM) which not
support the firmware compatible features, firmware will still send mailbox
message to PF when link status changed and PF will print
"un-supported mailbox message, code = 201".

To fix this problem, disable these firmware compatible features in PF
driver deinitialization process.

Fixes: ed8fb4b262ae ("net: hns3: add link change event report")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: hns3: fix always enable rx vlan filter problem after selftest

Currently, the rx vlan filter will always be disabled before selftest and
be enabled after selftest as the rx vlan filter feature is fixed on in
old device earlier than V3.

However, this feature is not fixed in some new devices and it can be
disabled by user. In this case, it is wrong if rx vlan filter is enabled
after selftest. So fix it.

Fixes: bcc26e8dc432 ("net: hns3: remove unused code in hns3_self_test()")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: hns3: PF enable promisc for VF when mac table is overflow

If unicast mac address table is full, and user add a new mac address, the
unicast promisc needs to be enabled for the new unicast mac address can be
used. So does the multicast promisc.

Now this feature has been implemented for PF, and VF should be implemented
too. When the mac table of VF is overflow, PF will enable promisc for this
VF.

Fixes: 1e6e76101fd9 ("net: hns3: configure promisc mode for VF asynchronously")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: hns3: fix show wrong state when add existing uc mac address

Currently, if function adds an existing unicast mac address, eventhough
driver will not add this address into hardware, but it will return 0 in
function hclge_add_uc_addr_common(). It will cause the state of this
unicast mac address is ACTIVE in driver, but it should be in TO-ADD state.

To fix this problem, function hclge_add_uc_addr_common() returns -EEXIST
if mac address is existing, and delete two error log to avoid printing
them all the time after this modification.

Fixes: 72110b567479 ("net: hns3: return 0 and print warning when hit duplicate MAC")
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>

net: hns3: fix mixed flag HCLGE_FLAG_MQPRIO_ENABLE and HCLGE_FLAG_DCB_ENABLE

HCLGE_FLAG_MQPRIO_ENABLE is supposed to set when enable
multiple TCs with tc mqprio, and HCLGE_FLAG_DCB_ENABLE is
supposed to set when enable multiple TCs with ets. But
the driver mixed the flags when updating the tm configuration.

Furtherly, PFC should be available when HCLGE_FLAG_MQPRIO_ENABLE
too, so remove the unnecessary limitation.

Fixes: 5a5c90917467 ("net: hns3: add support for tc mqprio offload")
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>

net: hns3: don't rollback when destroy mqprio fail

For destroy mqprio is irreversible in stack, so it's unnecessary
to rollback the tc configuration when destroy mqprio failed.
Otherwise, it may cause the configuration being inconsistent
between driver and netstack.

As the failure is usually caused by reset, and the driver will
restore the configuration after reset, so it can keep the
configuration being consistent between driver and hardware.

Fixes: 5a5c90917467 ("net: hns3: add support for tc mqprio offload")
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>

net: hns3: remove tc enable checking

Currently, in function hns3_nic_set_real_num_queue(), the
driver doesn't report the queue count and offset for disabled
tc. If user enables multiple TCs, but only maps user
priorities to partial of them, it may cause the queue range
of the unmapped TC being displayed abnormally.

Fix it by removing the tc enable checking, ensure the queue
count is not zero.

With this change, the tc_en is useless now, so remove it.

Fixes: a75a8efa00c5 ("net: hns3: Fix tc setup when netdev is first up")
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>

net: hns3: do not allow call hns3_nic_net_open repeatedly

hns3_nic_net_open() is not allowed to called repeatly, but there
is no checking for this. When doing device reset and setup tc
concurrently, there is a small oppotunity to call hns3_nic_net_open
repeatedly, and cause kernel bug by calling napi_enable twice.

The calltrace information is like below:
[ 3078.222780] ------------[ cut here ]------------
[ 3078.230255] kernel BUG at net/core/dev.c:6991!
[ 3078.236224] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[ 3078.243431] Modules linked in: hns3 hclgevf hclge hnae3 vfio_iommu_type1 vfio_pci vfio_virqfd vfio pv680_mii(O)
[ 3078.258880] CPU: 0 PID: 295 Comm: kworker/u8:5 Tainted: G           O      5.14.0-rc4+ #1
[ 3078.269102] Hardware name:  , BIOS KpxxxFPGA 1P B600 V181 08/12/2021
[ 3078.276801] Workqueue: hclge hclge_service_task [hclge]
[ 3078.288774] pstate: 60400009 (nZCv daif +PAN -UAO -TCO BTYPE=--)
[ 3078.296168] pc : napi_enable+0x80/0x84
tc qdisc sho[w  3d0e7v8 .e3t0h218 79] lr : hns3_nic_net_open+0x138/0x510 [hns3]

[ 3078.314771] sp : ffff8000108abb20
[ 3078.319099] x29: ffff8000108abb20 x28: 0000000000000000 x27: ffff0820a8490300
[ 3078.329121] x26: 0000000000000001 x25: ffff08209cfc6200 x24: 0000000000000000
[ 3078.339044] x23: ffff0820a8490300 x22: ffff08209cd76000 x21: ffff0820abfe3880
[ 3078.349018] x20: 0000000000000000 x19: ffff08209cd76900 x18: 0000000000000000
[ 3078.358620] x17: 0000000000000000 x16: ffffc816e1727a50 x15: 0000ffff8f4ff930
[ 3078.368895] x14: 0000000000000000 x13: 0000000000000000 x12: 0000259e9dbeb6b4
[ 3078.377987] x11: 0096a8f7e764eb40 x10: 634615ad28d3eab5 x9 : ffffc816ad8885b8
[ 3078.387091] x8 : ffff08209cfc6fb8 x7 : ffff0820ac0da058 x6 : ffff0820a8490344
[ 3078.396356] x5 : 0000000000000140 x4 : 0000000000000003 x3 : ffff08209cd76938
[ 3078.405365] x2 : 0000000000000000 x1 : 0000000000000010 x0 : ffff0820abfe38a0
[ 3078.414657] Call trace:
[ 3078.418517]  napi_enable+0x80/0x84
[ 3078.424626]  hns3_reset_notify_up_enet+0x78/0xd0 [hns3]
[ 3078.433469]  hns3_reset_notify+0x64/0x80 [hns3]
[ 3078.441430]  hclge_notify_client+0x68/0xb0 [hclge]
[ 3078.450511]  hclge_reset_rebuild+0x524/0x884 [hclge]
[ 3078.458879]  hclge_reset_service_task+0x3c4/0x680 [hclge]
[ 3078.467470]  hclge_service_task+0xb0/0xb54 [hclge]
[ 3078.475675]  process_one_work+0x1dc/0x48c
[ 3078.481888]  worker_thread+0x15c/0x464
[ 3078.487104]  kthread+0x160/0x170
[ 3078.492479]  ret_from_fork+0x10/0x18
[ 3078.498785] Code: c8027c81 35ffffa2 d50323bf d65f03c0 (d4210000)
[ 3078.506889] ---[ end trace 8ebe0340a1b0fb44 ]---

Once hns3_nic_net_open() is excute success, the flag
HNS3_NIC_STATE_DOWN will be cleared. So add checking for this
flag, directly return when HNS3_NIC_STATE_DOWN is no set.

Fixes: e888402789b9 ("net: hns3: call hns3_nic_net_open() while doing HNAE3_UP_CLIENT")
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>

Merge branch 'mctp-core-updates'

Matt Johnston says:

====================
Updates to MCTP core

This series adds timeouts for MCTP tags (a limited resource), and a few
other improvements to the MCTP core.
====================

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

mctp: Warn if pointer is set for a wrong dev type

Should not occur but is a sanity check.

May help tracking down Trinity reported issue
https://lore.kernel.org/lkml/20210913030701.GA5926@xsang-OptiPlex-9020/

Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

mctp: Set route MTU via netlink

A route's RTAX_MTU can be set in nested RTAX_METRICS

Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

doc/mctp: Add a little detail about kernel internals

Describe common flows and refcounting behaviour.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

mctp: Do inits as a subsys_initcall

In a future change, we'll want to provide a registration call for
mctp-specific devices. This requires us to have the networks established
before device driver inits, so run the core init as a subsys_initcall.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

mctp: Add tracepoints for tag/key handling

The tag allocation, release and bind events are somewhat opaque outside
the kernel; this change adds a few tracepoints to assist in
instrumentation and debugging.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

mctp: Implement a timeout for tags

Currently, a MCTP (local-eid,remote-eid,tag) tuple is allocated to a
socket on send, and only expires when the socket is closed.

This change introduces a tag timeout, freeing the tuple after a fixed
expiry - currently six seconds. This is greater than (but close to) the
max response timeout in upper-layer bindings.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

mctp: Add refcounts to mctp_dev

Currently, we tie the struct mctp_dev lifetime to the underlying struct
net_device, and hold/put that device as a proxy for a separate mctp_dev
refcount. This works because we're not holding any references to the
mctp_dev that are different from the netdev lifetime.

In a future change we'll break that assumption though, as we'll need to
hold mctp_dev references in a workqueue, which might live past the
netdev unregister notification.

In order to support that, this change introduces a refcount on the
mctp_dev, currently taken by the net_device->mctp_ptr reference, and
released on netdev unregister events. We can then use this for future
references that might outlast the net device.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

mctp: locking, lifetime and validity changes for sk_keys

We will want to invalidate sk_keys in a future change, which will
require a boolean flag to mark invalidated items in the socket & net
namespace lists. We'll also need to take a reference to keys, held over
non-atomic contexts, so we need a refcount on keys also.

This change adds a validity flag (currently always true) and refcount to
struct mctp_sk_key. With a refcount on the keys, using RCU no longer
makes much sense; we have exact indications on the lifetime of keys. So,
we also change the RCU list traversal to a locked implementation.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

mctp: Allow local delivery to the null EID

We may need to receive packets addressed to the null EID (==0), but
addressed to us at the physical layer.

This change adds a lookup for local routes when we see a packet
addressed to EID 0, and a local phys address.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

mctp: Allow MCTP on tun devices

Allowing TUN is useful for testing, to route packets to userspace or to
tunnel between machines.

Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: phy: micrel: Add support for LAN8804 PHY

The LAN8804 PHY has same features as that of LAN8814 PHY except that it
doesn't support 1588, SyncE or Q-USGMII.

This PHY is found inside the LAN966X switches.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ixgbe: Fix NULL pointer dereference in ixgbe_xdp_setup

The ixgbe driver currently generates a NULL pointer dereference with
some machine (online cpus < 63). This is due to the fact that the
maximum value of num_xdp_queues is nr_cpu_ids. Code is in
"ixgbe_set_rss_queues"".

Here's how the problem repeats itself:
Some machine (online cpus < 63), And user set num_queues to 63 through
ethtool. Code is in the "ixgbe_set_channels",
adapter->ring_feature[RING_F_FDIR].limit = count;

It becomes 63.

When user use xdp, "ixgbe_set_rss_queues" will set queues num.
adapter->num_rx_queues = rss_i;
adapter->num_tx_queues = rss_i;
adapter->num_xdp_queues = ixgbe_xdp_queues(adapter);

And rss_i's value is from
f = &adapter->ring_feature[RING_F_FDIR];
rss_i = f->indices = f->limit;

So "num_rx_queues" > "num_xdp_queues", when run to "ixgbe_xdp_setup",
for (i = 0; i < adapter->num_rx_queues; i++)
if (adapter->xdp_ring[i]->xsk_umem)

It leads to panic.

Call trace:
[exception RIP: ixgbe_xdp+368]
RIP: ffffffffc02a76a0  RSP: ffff9fe16202f8d0  RFLAGS: 00010297
RAX: 0000000000000000  RBX: 0000000000000020  RCX: 0000000000000000
RDX: 0000000000000000  RSI: 000000000000001c  RDI: ffffffffa94ead90
RBP: ffff92f8f24c0c18   R8: 0000000000000000   R9: 0000000000000000
R10: ffff9fe16202f830  R11: 0000000000000000  R12: ffff92f8f24c0000
R13: ffff9fe16202fc01  R14: 000000000000000a  R15: ffffffffc02a7530
ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
7 [ffff9fe16202f8f0] dev_xdp_install at ffffffffa89fbbcc
8 [ffff9fe16202f920] dev_change_xdp_fd at ffffffffa8a08808
9 [ffff9fe16202f960] do_setlink at ffffffffa8a20235
10 [ffff9fe16202fa88] rtnl_setlink at ffffffffa8a20384
11 [ffff9fe16202fc78] rtnetlink_rcv_msg at ffffffffa8a1a8dd
12 [ffff9fe16202fcf0] netlink_rcv_skb at ffffffffa8a717eb
13 [ffff9fe16202fd40] netlink_unicast at ffffffffa8a70f88
14 [ffff9fe16202fd80] netlink_sendmsg at ffffffffa8a71319
15 [ffff9fe16202fdf0] sock_sendmsg at ffffffffa89df290
16 [ffff9fe16202fe08] __sys_sendto at ffffffffa89e19c8
17 [ffff9fe16202ff30] __x64_sys_sendto at ffffffffa89e1a64
18 [ffff9fe16202ff38] do_syscall_64 at ffffffffa84042b9
19 [ffff9fe16202ff50] entry_SYSCALL_64_after_hwframe at ffffffffa8c0008c

So I fix ixgbe_max_channels so that it will not allow a setting of queues
to be higher than the num_online_cpus(). And when run to ixgbe_xdp_setup,
take the smaller value of num_rx_queues and num_xdp_queues.

Fixes: 4a9b32f30f80 ("ixgbe: fix potential RX buffer starvation for AF_XDP")
Signed-off-by: Feng Zhou <zhoufeng.zf@bytedance.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/nex
t-queue

Tony Nguyen says:

====================
100GbE Intel Wired LAN Driver Updates 2021-09-28

This series contains updates to ice driver only.

Dave adds support for QoS DSCP allowing for DSCP to TC mapping via APP
TLVs.

Ani adds enforcement of DSCP to only supported devices with the
introduction of a feature bitmap and corrects messaging of unsupported
modules based on link mode.

Jake refactors devlink info functions to be void as the functions no
longer return errors.

Jeff fixes a macro name to properly reflect the value.

Len Baker converts a kzalloc allocation to, the preferred, kcalloc.
====================

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

Merge branch 'octeontx2-ptp-vf'

Subbaraya Sundeep <sbhatta@marvell.com>

====================
octeontx2: Add PTP support for VFs

PTP is a shared hardware block which can prepend
RX timestamps to packets before directing packets to
PFs or VFs and can notify the TX timestamps to PFs or VFs
via TX completion queue descriptors. Hence adding PTP
support for VFs is exactly similar to PFs with minimal changes.
This patchset adds that PTP support for VFs.

Patch 1 - When an interface is set in promisc/multicast
the same setting is not retained when changing mtu or channels.
This is due to toggling of the interface by driver but not
calling set_rx_mode in the down-up sequence. Since setting
an interface to multicast properly is required for ptp this is
addressed in this patch.

Patch 2 - Changes in VF driver for registering timestamping
ethtool ops and ndo_ioctl.
====================

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

octeontx2-nicvf: Add PTP hardware clock support to NIX VF

This patch adds PTP PHC support to NIX VF interfaces. This enables
a VF to run PTP master/slave instance. PTP block being a shared
hardware resource it is recommended to avoid running multiple
PTP instances in the system which will impact the PTP clock
accuracy.

Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

octeontx2-pf: Enable promisc/allmulti match MCAM entries.

Whenever the interface is brought up/down then set_rx_mode
function is called by the stack which enables promisc/allmulti
MCAM entries. But there are cases when driver brings
interface down and then up such as while changing number
of channels. In these cases promisc/allmulti MCAM entries
are left disabled as set_rx_mode callback is not called.
This patch enables these MCAM entries in all such cases.

Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests/bpf: Fix probe_user test failure with clang build kernel

clang build kernel failed the selftest probe_user.
  $ ./test_progs -t probe_user
  $ ...
  $ test_probe_user:PASS:get_kprobe_res 0 nsec
  $ test_probe_user:FAIL:check_kprobe_res wrong kprobe res from probe read: 0.0.0.0:0
  $ #94 probe_user:FAIL

The test attached to kernel function __sys_connect(). In net/socket.c, we have
  int __sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen)
  {
        ......
  }
  ...
  SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr,
                  int, addrlen)
  {
        return __sys_connect(fd, uservaddr, addrlen);
  }

The gcc compiler (8.5.0) does not inline __sys_connect() in syscall entry
function. But latest clang trunk did the inlining. So the bpf program
is not triggered.

To make the test more reliable, let us kprobe the syscall entry function
instead. Note that x86_64, arm64 and s390 have syscall wrappers and they have
to be handled specially.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210929033000.3711921-1-yhs@fb.com

net: qrtr: combine nameservice into main module

Previously with CONFIG_QRTR=m a separate ns.ko would be built which
wasn't done on purpose and should be included in qrtr.ko.

Rename qrtr.c to af_qrtr.c so we can build a qrtr.ko with both af_qrtr.c
and ns.c.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-By: Steev Klimaszewski <steev@kali.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://lore.kernel.org/r/20210928171156.6353-1-luca@z3ntu.xyz
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: ipv4: remove superfluous header files from fib_notifier.c

fib_notifier.c hasn't use any macro or function declared
in net/netns/ipv4.h.

Thus, these files can be removed from fib_notifier.c safely
without affecting the compilation of the net/ipv4 module.

Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Link: https://lore.kernel.org/r/20210928164011.1454-1-liumh1@shanghaitech.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: bridge: mcast: Associate the seqcount with its protecting lock.

The sequence count bridge_mcast_querier::seq is protected by
net_bridge::multicast_lock but seqcount_init() does not associate the
seqcount with the lock. This leads to a warning on PREEMPT_RT because
preemption is still enabled.

Let seqcount_init() associate the seqcount with lock that protects the
write section. Remove lockdep_assert_held_once() because lockdep already checks
whether the associated lock is held.

Fixes: 67b746f94ff39 ("net: bridge: mcast: make sure querier port/address updates are consistent")
Reported-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Mike Galbraith <efault@gmx.de>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Link: https://lore.kernel.org/r/20210928141049.593833-1-bigeasy@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: mdio-ipq4019: Fix the error for an optional regs resource

The second resource is optional which is only provided on the chipset
IPQ5018. But the blamed commit ignores that and if the resource is
not there it just fails.

the resource is used like this,
if (priv->eth_ldo_rdy) {
val = readl(priv->eth_ldo_rdy);
val |= BIT(0);
writel(val, priv->eth_ldo_rdy);
fsleep(IPQ_PHY_SET_DELAY_US);
}

This patch reverts that to still allow the second resource to be optional
because other SoC have the some MDIO controller and doesn't need to
second resource.

Fixes: fa14d03e014a ("net: mdio-ipq4019: Make use of devm_platform_ioremap_resource()")
Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210928134849.2092-1-caihuoqing@baidu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge branch 'bpf: Build with -Wcast-function-type'

Kees Cook says:

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

Hi,

In order to keep ahead of cases in the kernel where Control Flow Integrity
(CFI) may trip over function call casts, enabling -Wcast-function-type
is helpful. To that end, replace BPF_CAST_CALL() as it triggers warnings
with this option and is now one of the last places in the kernel in need
of fixing.

Thanks,

-Kees

v2:
- rebase to bpf-next
- add acks
v1: https://lore.kernel.org/lkml/20210927182700.2980499-1-keescook@chromium.org
====================

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

bpf: Replace callers of BPF_CAST_CALL with proper function typedef

In order to keep ahead of cases in the kernel where Control Flow
Integrity (CFI) may trip over function call casts, enabling
-Wcast-function-type is helpful. To that end, BPF_CAST_CALL causes
various warnings and is one of the last places in the kernel
triggering this warning.

For actual function calls, replace BPF_CAST_CALL() with a typedef, which
captures the same details about the given function pointers.

This change results in no object code difference.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://github.com/KSPP/linux/issues/20
Link: https://lore.kernel.org/lkml/CAEf4Bzb46=-J5Fxc3mMZ8JQPtK1uoE0q6+g6WPz53Cvx=CBEhw@mail.gmail.com
Link: https://lore.kernel.org/bpf/20210928230946.4062144-3-keescook@chromium.org

bpf: Replace "want address" users of BPF_CAST_CALL with BPF_CALL_IMM

In order to keep ahead of cases in the kernel where Control Flow
Integrity (CFI) may trip over function call casts, enabling
-Wcast-function-type is helpful. To that end, BPF_CAST_CALL causes
various warnings and is one of the last places in the kernel triggering
this warning.

Most places using BPF_CAST_CALL actually just want a void * to perform
math on. It's not actually performing a call, so just use a different
helper to get the void *, by way of the new BPF_CALL_IMM() helper, which
can clean up a common copy/paste idiom as well.

This change results in no object code difference.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://github.com/KSPP/linux/issues/20
Link: https://lore.kernel.org/lkml/CAEf4Bzb46=-J5Fxc3mMZ8JQPtK1uoE0q6+g6WPz53Cvx=CBEhw@mail.gmail.com
Link: https://lore.kernel.org/bpf/20210928230946.4062144-2-keescook@chromium.org

Merge tag 'pinctrl-v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
"Some few pin control fixes for the v5.15 kernel cycle. The most
  critical is the AMD fixes.

   - Fix wakeup interrupts in the AMD driver affecting AMD laptops.

   - Fix parent irqspec translation in the Qualcomm SPMI GPIO driver.

   - Fix deferred probe handling in the Rockchip driver, this is a
     stopgap solution while we look for something more elegant.

   - Add PM suspend callbacks to the Qualcomm SC7280 driver.

   - Some minor doc fix (should have come in earlier, sorry)"

* tag 'pinctrl-v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: qcom: sc7280: Add PM suspend callbacks
  gpio/rockchip: fetch deferred output settings on probe
  pinctrl/rockchip: add a queue for deferred pin output settings on probe
  pinctrl: qcom: spmi-gpio: correct parent irqspec translation
  pinctrl: amd: Handle wake-up interrupt
  pinctrl: amd: Add irq field data
  pinctrl: core: Remove duplicated word from devm_pinctrl_unregister()

Merge tag 'vfio-v5.15-rc4' of git://github.com/awilliam/linux-vfio

Pull VFIO fixes from Alex Williamson:

- Fix vfio-ap leak on uninit (Jason Gunthorpe)

- Add missing prototype arg name (Colin Ian King)

* tag 'vfio-v5.15-rc4' of git://github.com/awilliam/linux-vfio:
vfio/ap_ops: Add missed vfio_uninit_group_dev()
vfio/pci: add missing identifier name in argument of function prototype

bpftool: Avoid using "?: " in generated code

"?:" is a GNU C extension, some environment has warning flags for its
use, or even prohibit it directly. This patch avoid triggering these
problems by simply expand it to its full form, no functionality change.

Signed-off-by: Yucong Sun <fallentree@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210928184221.1545079-1-fallentree@fb.com

Bluetooth: btrsi: remove superfluous header files from btrsi.c

btrsi.c hasn't use any macro or function declared in net/genetlink.h.
Thus, these files can be removed from btrsi.c safely without
affecting the compilation of the ./drivers/bluetooth module

Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: btrtl: Set VsMsftOpCode based on device table

The device table already has the option to hold device specific details
and thus include the support for Microsoft extensions there as well.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Bluetooth: Fix handling of experimental feature for codec offload

The existence of the experimental feature identifiy is the indication
that it is supported or not. No extra flag needed and the initial flag
should define if a feature is enabled or not. This is actually defined
in the management API definition.

Fixes: ad93315183285 ("Bluetooth: Add offload feature under experimental flag")
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Bluetooth: Fix handling of experimental feature for quality reports

The existence of the experimental feature identifiy is the indication
that it is supported or not. No extra flag needed and the initial flag
should define if a feature is enabled or not. This is actually defined
in the management API definition.

Fixes: ae7d925b5c043 ("Bluetooth: Support the quality report events")
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Merge branch 'libbpf: stricter BPF program section name handling'

Andrii Nakryiko says:

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

Implement opt-in stricter BPF program section name (SEC()) handling logic. For
a lot of supported ELF section names, enforce exact section name match with no
arbitrary characters added at the end. See patch #9 for more details.

To allow this, patches #2 through #4 clean up and preventively fix selftests,
normalizing existing SEC() usage across multiple selftests. While at it, those
patches also reduce the amount of remaining bpf_object__find_program_by_title()
uses, which should be completely removed soon, given it's an API with
ambiguous semantics and will be deprecated and eventually removed in libbpf 1.0.

Patch #1 also introduces SEC("tc") as an alias for SEC("classifier"). "tc" is
a better and less misleading name, so patch #3 replaces all classifier* uses
with nice and short SEC("tc").

Last patch is also fixing "sk_lookup/" definition to not require and not allow
extra "/blah" parts after it, which serve no meaning.

All the other patches are gradual internal libbpf changes to:
  - allow this optional strict logic for ELF section name handling;
  - allow new use case (for now for "struct_ops", but that could be extended
    to, say, freplace definitions), in which it can be used stand-alone to
    specify just type (SEC("struct_ops")), or also accept extra parameters
    which can be utilized by libbpf to either get more data or double-check
    valid use (e.g., SEC("struct_ops/dctcp_init") to specify desired
    struct_ops operation that is supposed to be implemented);
  - get libbpf's internal logic ready to allow other libraries and
    applications to specify their custom handlers for ELF section name for BPF
    programs. All the pieces are in place, the only thing preventing making
    this as public libbpf API is reliance on internal type for specifying BPF
    program load attributes. The work is planned to revamp related low-level
    libbpf APIs, at which point it will be possible to just re-use such new
    types for coordination between libbpf and custom handlers.

These changes are a part of libbpf 1.0 effort ([0]). They are also intended to
be applied on top of the previous preparatory series [1], so currently CI will
be failing to apply them to bpf-next until that patch set is landed. Once it
is landed, kernel-patches daemon will automatically retest this patch set.

  [0] https://github.com/libbpf/libbpf/wiki/Libbpf:-the-road-to-v1.0#stricter-and-more-uniform-bpf-program-section-name-sec-handling
  [1] https://patchwork.kernel.org/project/netdevbpf/list/?series=547675&state=*

v3->v4:
  - replace SEC("classifier*") with SEC("tc") (Daniel);
v2->v3:
  - applied acks, addressed most feedback, added comments to new flags (Dave);
v1->v2:
  - rebase onto latest bpf-next and resolve merge conflicts w/ Dave's changes.
====================

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

selftests/bpf: Switch sk_lookup selftests to strict SEC("sk_lookup") use

Update "sk_lookup/" definition to be a stand-alone type specifier,
with backwards-compatible prefix match logic in non-libbpf-1.0 mode.

Currently in selftests all the "sk_lookup/<whatever>" uses just use
<whatever> for duplicated unique name encoding, which is redundant as
BPF program's name (C function name) uniquely and descriptively
identifies the intended use for such BPF programs.

With libbpf's SEC_DEF("sk_lookup") definition updated, switch existing
sk_lookup programs to use "unqualified" SEC("sk_lookup") section names,
with no random text after it.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-11-andrii@kernel.org

libbpf: Add opt-in strict BPF program section name handling logic

Implement strict ELF section name handling for BPF programs. It utilizes
`libbpf_set_strict_mode()` framework and adds new flag: LIBBPF_STRICT_SEC_NAME.

If this flag is set, libbpf will enforce exact section name matching for
a lot of program types that previously allowed just partial prefix
match. E.g., if previously SEC("xdp_whatever_i_want") was allowed, now
in strict mode only SEC("xdp") will be accepted, which makes SEC("")
definitions cleaner and more structured. SEC() now won't be used as yet
another way to uniquely encode BPF program identifier (for that
C function name is better and is guaranteed to be unique within
bpf_object). Now SEC() is strictly BPF program type and, depending on
program type, extra load/attach parameter specification.

Libbpf completely supports multiple BPF programs in the same ELF
section, so multiple BPF programs of the same type/specification easily
co-exist together within the same bpf_object scope.

Additionally, a new (for now internal) convention is introduced: section
name that can be a stand-alone exact BPF program type specificator, but
also could have extra parameters after '/' delimiter. An example of such
section is "struct_ops", which can be specified by itself, but also
allows to specify the intended operation to be attached to, e.g.,
"struct_ops/dctcp_init". Note, that "struct_ops_some_op" is not allowed.
Such section definition is specified as "struct_ops+".

This change is part of libbpf 1.0 effort ([0], [1]).

[0] Closes: https://github.com/libbpf/libbpf/issues/271
[1] https://github.com/libbpf/libbpf/wiki/Libbpf:-the-road-to-v1.0#stricter-and-more-uniform-bpf-program-section-name-sec-handling

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-10-andrii@kernel.org

libbpf: Complete SEC() table unification for BPF_APROG_SEC/BPF_EAPROG_SEC

Complete SEC() table refactoring towards unified form by rewriting
BPF_APROG_SEC and BPF_EAPROG_SEC definitions with
SEC_DEF(SEC_ATTACHABLE_OPT) (for optional expected_attach_type) and
SEC_DEF(SEC_ATTACHABLE) (mandatory expected_attach_type), respectively.
Drop BPF_APROG_SEC, BPF_EAPROG_SEC, and BPF_PROG_SEC_IMPL macros after
that, leaving SEC_DEF() macro as the only one used.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-9-andrii@kernel.org

libbpf: Refactor ELF section handler definitions

Refactor ELF section handler definitions table to use a set of flags and
unified SEC_DEF() macro. This allows for more succinct and table-like
set of definitions, and allows to more easily extend the logic without
adding more verbosity (this is utilized in later patches in the series).

This approach is also making libbpf-internal program pre-load callback
not rely on bpf_sec_def definition, which demonstrates that future
pluggable ELF section handlers will be able to achieve similar level of
integration without libbpf having to expose extra types and APIs.

For starters, update SEC_DEF() definitions and make them more succinct.
Also convert BPF_PROG_SEC() and BPF_APROG_COMPAT() definitions to
a common SEC_DEF() use.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-8-andrii@kernel.org

libbpf: Reduce reliance of attach_fns on sec_def internals

Move closer to not relying on bpf_sec_def internals that won't be part
of public API, when pluggable SEC() handlers will be allowed. Drop
pre-calculated prefix length, and in various helpers don't rely on this
prefix length availability. Also minimize reliance on knowing
bpf_sec_def's prefix for few places where section prefix shortcuts are
supported (e.g., tp vs tracepoint, raw_tp vs raw_tracepoint).

Given checking some string for having a given string-constant prefix is
such a common operation and so annoying to be done with pure C code, add
a small macro helper, str_has_pfx(), and reuse it throughout libbpf.c
where prefix comparison is performed. With __builtin_constant_p() it's
possible to have a convenient helper that checks some string for having
a given prefix, where prefix is either string literal (or compile-time
known string due to compiler optimization) or just a runtime string
pointer, which is quite convenient and saves a lot of typing and string
literal duplication.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-7-andrii@kernel.org

libbpf: Refactor internal sec_def handling to enable pluggability

Refactor internals of libbpf to allow adding custom SEC() handling logic
easily from outside of libbpf. To that effect, each SEC()-handling
registration sets mandatory program type/expected attach type for
a given prefix and can provide three callbacks called at different
points of BPF program lifetime:

  - init callback for right after bpf_program is initialized and
  prog_type/expected_attach_type is set. This happens during
  bpf_object__open() step, close to the very end of constructing
  bpf_object, so all the libbpf APIs for querying and updating
  bpf_program properties should be available;

  - pre-load callback is called right before BPF_PROG_LOAD command is
  called in the kernel. This callbacks has ability to set both
  bpf_program properties, as well as program load attributes, overriding
  and augmenting the standard libbpf handling of them;

  - optional auto-attach callback, which makes a given SEC() handler
  support auto-attachment of a BPF program through bpf_program__attach()
  API and/or BPF skeletons <skel>__attach() method.

Each callbacks gets a `long cookie` parameter passed in, which is
specified during SEC() handling. This can be used by callbacks to lookup
whatever additional information is necessary.

This is not yet completely ready to be exposed to the outside world,
mainly due to non-public nature of struct bpf_prog_load_params. Instead
of making it part of public API, we'll wait until the planned low-level
libbpf API improvements for BPF_PROG_LOAD and other typical bpf()
syscall APIs, at which point we'll have a public, probably OPTS-based,
way to fully specify BPF program load parameters, which will be used as
an interface for custom pre-load callbacks.

But this change itself is already a good first step to unify the BPF
program hanling logic even within the libbpf itself. As one example, all
the extra per-program type handling (sleepable bit, attach_btf_id
resolution, unsetting optional expected attach type) is now more obvious
and is gathered in one place.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-6-andrii@kernel.org

selftests/bpf: Normalize all the rest SEC() uses

Normalize all the other non-conforming SEC() usages across all
selftests. This is in preparation for libbpf to start to enforce
stricter SEC() rules in libbpf 1.0 mode.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-5-andrii@kernel.org

selftests/bpf: Switch SEC("classifier*") usage to a strict SEC("tc")

Convert all SEC("classifier*") uses to a new and strict SEC("tc")
section name. In reference_tracking selftests switch from ambiguous
searching by program title (section name) to non-ambiguous searching by
name in some selftests, getting closer to completely removing
bpf_object__find_program_by_title().

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-4-andrii@kernel.org

selftests/bpf: Normalize XDP section names in selftests

Convert almost all SEC("xdp_blah") uses to strict SEC("xdp") to comply
with strict libbpf 1.0 logic of exact section name match for XDP program
types. There is only one exception, which is only tested through
iproute2 and defines multiple XDP programs within the same BPF object.
Given iproute2 still works in non-strict libbpf mode and it doesn't have
means to specify XDP programs by its name (not section name/title),
leave that single file alone for now until iproute2 gains lookup by
function/program name.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-3-andrii@kernel.org

libbpf: Add "tc" SEC_DEF which is a better name for "classifier"

As argued in [0], add "tc" ELF section definition for SCHED_CLS BPF
program type. "classifier" is a misleading terminology and should be
migrated away from.

[0] https://lore.kernel.org/bpf/270e27b1-e5be-5b1c-b343-51bd644d0747@iogearbox.net/

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-2-andrii@kernel.org

Merge tag 'm68k-for-v5.15-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

Pull more m68k updates from Geert Uytterhoeven:

- signal handling fixes

- removal of set_fs()

[ The set_fs removal isn't strictly a fix, but it's been pending for a
  while and is very welcome. The signal handling fixes resolved an issue
  that was incorrectly attributed to the set_fs changes    - Linus ]

* tag 'm68k-for-v5.15-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Remove set_fs()
  m68k: Provide __{get,put}_kernel_nofault
  m68k: Factor the 8-byte lowlevel {get,put}_user code into helpers
  m68k: Use BUILD_BUG for passing invalid sizes to get_user/put_user
  m68k: Remove the 030 case in virt_to_phys_slow
  m68k: Document that access_ok is broken for !CONFIG_CPU_HAS_ADDRESS_SPACES
  m68k: Leave stack mangling to asm wrapper of sigreturn()
  m68k: Update ->thread.esp0 before calling syscall_trace() in ret_from_signal
  m68k: Handle arrivals of multiple signals correctly

Merge tag 'nios2_fixes_for_v5.15_part1' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux

Pull nios2 fixes from Dinh Nguyen:

- Fix build warning for unmet dependency for EARLY_PRINTK

- Remove unused dram_start() function

* tag 'nios2_fixes_for_v5.15_part1' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
NIOS2: setup.c: drop unused variable 'dram_start'
NIOS2: fix kconfig unmet dependency warning for SERIAL_CORE_CONSOLE

Bbluetooth: btusb: Add another Bluetooth part for Realtek 8852AE

This Realtek device has both wifi and BT components. The latter reports
a USB ID of 0bda:4852, which is not in the table.

When adding the new device, I noticed that the RTL8852AE was mentioned in
two places. These are now combined.

The portion of /sys/kernel/debug/usb/devices pertaining to this device is

T:  Bus=06 Lev=01 Prnt=01 Port=03 Cnt=02 Dev#=  3 Spd=12   MxCh= 0
D:  Ver= 1.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0bda ProdID=4852 Rev= 0.00
S:  Manufacturer=Realtek
S:  Product=Bluetooth Radio
S:  SerialNumber=00e04c000001
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
I:  If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
I:  If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
I:  If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
I:  If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
I:  If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms

Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

ice: Prefer kcalloc over open coded arithmetic

As noted in the "Deprecated Interfaces, Language Features, Attributes,
and Conventions" documentation [1], size calculations (especially
multiplication) should not be performed in memory allocator (or similar)
function arguments due to the risk of them overflowing. This could lead
to values wrapping around and a smaller allocation being made than the
caller was expecting. Using those allocations could lead to linear
overflows of heap memory and other misbehaviors.

In this case this is not actually dynamic sizes: both sides of the
multiplication are constant values. However it is best to refactor this
anyway, just to keep the open-coded math idiom out of code.

So, use the purpose specific kcalloc() function instead of the argument
size * count in the kzalloc() function.

[1] https://www.kernel.org/doc/html/v5.14/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments

Signed-off-by: Len Baker <len.baker@gmx.com>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

ice: Fix macro name for IPv4 fragment flag

In IPv4 header, fragment flags indicate whether the packet needs
to be fragmented or not. The value 0x20 represents MF (More Fragment); fix
the macro name to match this.

Signed-off-by: Ting Xu <ting.xu@intel.com>
Signed-off-by: Jeff Guo <jia.guo@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

ice: refactor devlink getter/fallback functions to void

After commit a8f89fa27773 ("ice: do not abort devlink info if board
identifier can't be found"), the getter/fallback() functions no longer
report an error. Convert the interface to a void so that it is no
longer possible to add a version field that is fatal. This makes
sense, because we should not fail to report other versions just
because one of the version pieces could not be found.

Finally, clean up the getter functions line wrapping so that none of
them take more than 80 columns, as is the usual style for networking
files.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

ice: Fix link mode handling

The messaging for unsupported module detection is different for
lenient mode and strict mode. Update the code to print the right
messaging for a given link mode.

Media topology conflict is not an error in lenient mode, so return
an error code only if not in lenient mode.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

ice: Add feature bitmap, helpers and a check for DSCP

DSCP a.k.a L3 QoS is only supported on certain devices. To enforce this,
this patch introduces a bitmap of features and helper functions.

The feature bitmap is set based on device IDs on driver init. Currently,
DSCP is the only feature in this bitmap, but there will be more in the
future. In the DCB netlink flow, check if the feature bit is set before
exercising DSCP.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

ice: Add DSCP support

Implement code to handle submission of APP TLV's
containing DSCP to TC mapping.

The first such mapping received on an interface
will cause that PF to switch to L3 DSCP QoS mode,
apply the default config for that mode, and apply
the received mapping.

Only one such mapping will be allowed per DSCP value,
and when the last DSCP mapping is deleted, the PF
will switch back into L2 VLAN QoS mode, applying the
appropriate default QoS settings.

L3 DSCP QoS mode will only be allowed in SW DCBx
mode, in other words, when the FW LLDP engine is
disabled. Commands that break this mutual exclusivity
will be blocked.

Co-developed-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt

Pull fsverity fix from Eric Biggers:
"Fix an integer overflow when computing the Merkle tree layout of
extremely large files, exposed by btrfs adding support for fs-verity"

* tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt:
fs-verity: fix signed integer overflow with i_size near S64_MAX

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio/vdpa fixes from Michael Tsirkin:
"Fixes up some issues in rc1"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vdpa: potential uninitialized return in vhost_vdpa_va_map()
  vdpa/mlx5: Avoid executing set_vq_ready() if device is reset
  vdpa/mlx5: Clear ready indication for control VQ
  vduse: Cleanup the old kernel states after reset failure
  vduse: missing error code in vduse_init()
  virtio: don't fail on !of_device_is_compatible

Merge tag 'mmc-v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:

- renesas_sdhi: Fix regression with hard reset on old SDHIs

- dw_mmc: Only inject fault before done/error

* tag 'mmc-v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: renesas_sdhi: fix regression with hard reset on old SDHIs
mmc: dw_mmc: Only inject fault before done/error

gve: DQO: avoid unused variable warnings

The use of dma_unmap_addr()/dma_unmap_len() in the driver causes
multiple warnings when these macros are defined as empty, e.g.
in an ARCH=i386 allmodconfig build:

drivers/net/ethernet/google/gve/gve_tx_dqo.c: In function 'gve_tx_add_skb_no_copy_dqo':
drivers/net/ethernet/google/gve/gve_tx_dqo.c:494:40: error: unused variable 'buf' [-Werror=unused-variable]
494 | struct gve_tx_dma_buf *buf =

This is not how the NEED_DMA_MAP_STATE macros are meant to work,
as they rely on never using local variables or a temporary structure
like gve_tx_dma_buf.

Remote the gve_tx_dma_buf definition and open-code the contents
in all places to avoid the warning. This causes some rather long
lines but otherwise ends up making the driver slightly smaller.

Fixes: a57e5de476be ("gve: DQO: Add TX path")
Link: https://lore.kernel.org/netdev/20210723231957.1113800-1-bcf@google.com/
Link: https://lore.kernel.org/netdev/20210721151100.2042139-1-arnd@kernel.org/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

octeontx2-pf: Use hardware register for CQE count

Current driver uses software CQ head pointer to poll on CQE
header in memory to determine if CQE is valid. Software needs
to make sure, that the reads of the CQE do not get re-ordered
so much that it ends up with an inconsistent view of the CQE.
To ensure that DMB barrier after read to first CQE cacheline
and before reading of the rest of the CQE is needed.
But having barrier for every CQE read will impact the performance,
instead use hardware CQ head and tail pointers to find the
valid number of CQEs.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

Daniel Borkmann says:

====================
pull-request: bpf 2021-09-28

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

We've added 10 non-merge commits during the last 14 day(s) which contain
a total of 11 files changed, 139 insertions(+), 53 deletions(-).

The main changes are:

1) Fix MIPS JIT jump code emission for too large offsets, from Piotr Krysiuk.

2) Fix x86 JIT atomic/fetch emission when dst reg maps to rax, from Johan Almbladh.

3) Fix cgroup_sk_alloc corner case when called from interrupt, from Daniel Borkmann.

4) Fix segfault in libbpf's linker for objects without BTF, from Kumar Kartikeya Dwivedi.

5) Fix bpf_jit_charge_modmem for applications with CAP_BPF, from Lorenz Bauer.

6) Fix return value handling for struct_ops BPF programs, from Hou Tao.

7) Various fixes to BPF selftests, from Jiri Benc.
====================

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

Merge branch 'octeontx2-af-external-ptp-clock'

Hariprasad Kelam says:

====================
Externel ptp clock support

Externel ptp support is required in a scenario like connecting
a external timing device to the chip for time synchronization.
This series of patches adds support to ptp driver to use external
clock and enables PTP config in CN10K MAC block (RPM). Currently
PTP configuration is left unchanged in FLR handler these patches
addresses the same.
====================

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

octeontx2-af: Add external ptp input clock

PTP hardware block can be configured to utilize
the external clock. Also the current ptp timestamp
can be captured when external trigger is applied on
a gpio pin. These features are required in scenarios
like connecting a external timing device to the chip
for time synchronization. The timing device provides
the clock and trigger(PPS signal) to the PTP block.
This patch does the following:
1. configures PTP block to use external clock
frequency and timestamp capture on external event.
2. sends PTP_REQ_EXTTS events to kernel ptp phc susbsytem
with captured timestamps
3. aligns PPS edge to adjusted ptp clock in the ptp device
by setting the PPS_THRESH to the reminder of the last
timestamp value captured by external PPS

Signed-off-by: Yi Guo <yig@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

octeontx2-af: Use ptp input clock info from firmware data

The input clock frequency of PTP block is figured
out from hardware reset block currently. The firmware
data already has this info in sclk. Hence simplify
ptp driver to use sclk from firmware data.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

octeontx2-af: cn10k: RPM hardware timestamp configuration

MAC on CN10K support hardware timestamping such that 8 bytes addition
header is prepended to incoming packets. This patch does necessary
configuration to enable Hardware time stamping upon receiving request
from PF netdev interfaces.

Timestamp configuration is different on MAC (CGX) Octeontx2 silicon
and MAC (RPM) OcteonTX3 CN10k. Based on silicon variant appropriate
fn() pointer is called. Refactor MAC specific mbox messages to remove
unnecessary gaps in mboxids.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

octeontx2-af: Reset PTP config in FLR handler

Upon receiving ptp config request from netdev interface , Octeontx2 MAC
block CGX is configured to append timestamp to every incoming packet
and NPC config is updated with DMAC offset change.

Currently this configuration is not reset in FLR handler. This patch
resets the same.

Signed-off-by: Harman Kalra <hkalra@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: hns3: fix hclge_dbg_dump_tm_pg() stack usage

This function copies strings around between multiple buffers
including a large on-stack array that causes a build warning
on 32-bit systems:

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c: In function 'hclge_dbg_dump_tm_pg':
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:782:1: error: the frame size of 1424 bytes is larger than 1400 bytes [-Werror=frame-larger-than=]

The function can probably be cleaned up a lot, to go back to
printing directly into the output buffer, but dynamically allocating
the structure is a simpler workaround for now.

Fixes: 04d96139ddb3 ("net: hns3: refine function hclge_dbg_dump_tm_pri()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: mdio: mscc-miim: Fix the mdio controller

According to the documentation the second resource is optional. But the
blamed commit ignores that and if the resource is not there it just
fails.

This patch reverts that to still allow the second resource to be
optional because other SoC have the some MDIO controller and doesn't
need to second resource.

Fixes: 672a1c394950 ("net: mdio: mscc-miim: Make use of the helper function devm_platform_ioremap_resource()")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tls: support SM4 CCM algorithm

The IV of CCM mode has special requirements, this patch supports CCM
mode of SM4 algorithm.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

af_unix: Return errno instead of NULL in unix_create1().

unix_create1() returns NULL on error, and the callers assume that it never
fails for reasons other than out of memory.  So, the callers always return
-ENOMEM when unix_create1() fails.

However, it also returns NULL when the number of af_unix sockets exceeds
twice the limit controlled by sysctl: fs.file-max.  In this case, the
callers should return -ENFILE like alloc_empty_file().

This patch changes unix_create1() to return the correct error value instead
of NULL on error.

Out of curiosity, the assumption has been wrong since 1999 due to this
change introduced in 2.2.4 [0].

  diff -u --recursive --new-file v2.2.3/linux/net/unix/af_unix.c linux/net/unix/af_unix.c
  --- v2.2.3/linux/net/unix/af_unix.c Tue Jan 19 11:32:53 1999
  +++ linux/net/unix/af_unix.c Sun Mar 21 07:22:00 1999
  @@ -388,6 +413,9 @@
   {
    struct sock *sk;

  + if (atomic_read(&unix_nr_socks) >= 2*max_files)
  + return NULL;
  +
    MOD_INC_USE_COUNT;
    sk = sk_alloc(PF_UNIX, GFP_KERNEL, 1);
    if (!sk) {

[0]: https://cdn.kernel.org/pub/linux/kernel/v2.2/patch-2.2.4.gz

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: udp: annotate data race around udp_sk(sk)->corkflag

up->corkflag field can be read or written without any lock.
Annotate accesses to avoid possible syzbot/KCSAN reports.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: sun: SUNVNET_COMMON should depend on INET

When CONFIG_INET is not set, there are failing references to IPv4
functions, so make this driver depend on INET.

Fixes these build errors:

sparc64-linux-ld: drivers/net/ethernet/sun/sunvnet_common.o: in function `sunvnet_start_xmit_common':
sunvnet_common.c:(.text+0x1a68): undefined reference to `__icmp_send'
sparc64-linux-ld: drivers/net/ethernet/sun/sunvnet_common.o: in function `sunvnet_poll_common':
sunvnet_common.c:(.text+0x358c): undefined reference to `ip_send_check'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Aaron Young <aaron.young@oracle.com>
Cc: Rashmi Narasimhan <rashmi.narasimhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ionic: fix gathering of debug stats

Don't print stats for which we haven't reserved space as it can
cause nasty memory bashing and related bad behaviors.

Fixes: aa620993b1e5 ("ionic: pull per-q stats work out of queue loops")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/t
nguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2021-09-27

This series contains updates to e100 driver only.

Jake corrects under allocation of register buffer due to incorrect
calculations and fixes buffer overrun of register dump.
====================

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

net: ipv6: use ipv6-y directly instead of ipv6-objs

Kbuild supports <modname>-y as well as <modname>-objs.
This simplifies the Makefile.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>