1249746 Commits

Author SHA1 Message Date
David S. Miller
beb53f3269 Merge branch 'txgbe-irq_domain'
Jiawen Wu says:

====================
Implement irq_domain for TXGBE

Implement irq_domain for the MAC interrupt and handle the sub-irqs.

v3 -> v4:
- fix build error

v2 -> v3:
- use macro defines instead of magic number

v1 -> v2:
- move interrupt codes to txgbe_irq.c
- add txgbe-link-irq to msic irq domain
- remove functions that are not needed
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2024-01-27 14:31:55 +00:00
Jiawen Wu
aefd013624 net: txgbe: use irq_domain for interrupt controller
In the current interrupt controller, the MAC interrupt acts as the
parent interrupt in the GPIO IRQ chip. But when the number of Rx/Tx
ring changes, the PCI IRQ vector needs to be reallocated. Then this
interrupt controller would be corrupted. So use irq_domain structure
to avoid the above problem.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-01-27 14:31:55 +00:00
Jiawen Wu
63aabc3ef1 net: txgbe: move interrupt codes to a separate file
In order to change the interrupt response structure, there will be a
lot of code added next. Move these interrupt codes to a new file, to
make the codes cleaner.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-01-27 14:31:54 +00:00
William Tu
6f83b62283 Documentation: mlx5.rst: Add note for eswitch MD
Add a note when using esw_port_metadata. The parameter has runtime
mode but setting it does not take effect immediately. Setting it must
happen in legacy mode, and the port metadata takes effects when the
switchdev mode is enabled.

Disable eswitch port metadata::
  $ devlink dev param set pci/0000:06:00.0 name esw_port_metadata value \
    false cmode runtime
Change eswitch mode to switchdev mode where after choosing the metadata value::
  $ devlink dev eswitch set pci/0000:06:00.0 mode switchdev

Note that other mlx5 devlink runtime parameters, esw_multiport and
flow_steering_mode, do not have this limitation.

Signed-off-by: William Tu <witu@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-01-27 14:29:20 +00:00
FUJITA Tomonori
599b75a3b7 rust: phy: use VTABLE_DEFAULT_ERROR
Since 6.8-rc1, using VTABLE_DEFAULT_ERROR for optional functions
(never called) in #[vtable] is the recommended way.

Note that no functional changes in this patch.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: Trevor Gross <tmgross@umich.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-01-27 14:28:00 +00:00
FUJITA Tomonori
1d4046b571 rust: phy: use srctree-relative links
The relative paths like the following are bothersome and don't work
with `O=` builds:

//! C headers: [`include/linux/phy.h`](../../../../../../../include/linux/phy.h).

This updates such links by using the `srctree`-relative link feature
introduced in 6.8-rc1 like:

//! C headers: [`include/linux/phy.h`](srctree/include/linux/phy.h).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: Trevor Gross <tmgross@umich.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-01-27 14:26:48 +00:00
Xi Ruoyao
59be5c3585 mips: Call lose_fpu(0) before initializing fcr31 in mips_set_personality_nan
If we still own the FPU after initializing fcr31, when we are preempted
the dirty value in the FPU will be read out and stored into fcr31,
clobbering our setting.  This can cause an improper floating-point
environment after execve().  For example:

    zsh% cat measure.c
    #include <fenv.h>
    int main() { return fetestexcept(FE_INEXACT); }
    zsh% cc measure.c -o measure -lm
    zsh% echo $((1.0/3)) # raising FE_INEXACT
    0.33333333333333331
    zsh% while ./measure; do ; done
    (stopped in seconds)

Call lose_fpu(0) before setting fcr31 to prevent this.

Closes: https://lore.kernel.org/linux-mips/7a6aa1bbdbbe2e63ae96ff163fab0349f58f1b9e.camel@xry111.site/
Fixes: 9b26616c8d9d ("MIPS: Respect the ISA level in FCSR handling")
Cc: stable@vger.kernel.org
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2024-01-27 11:08:04 +01:00
Huang Pei
822df315cc MIPS: loongson64: set nid for reserved memblock region
Commit 61167ad5fecd("mm: pass nid to reserve_bootmem_region()") reveals
that reserved memblock regions have no valid node id set, just set it
right since loongson64 firmware makes it clear in memory layout info.

This works around booting failure on 3A1000+ since commit 61167ad5fecd
("mm: pass nid to reserve_bootmem_region()") under
CONFIG_DEFERRED_STRUCT_PAGE_INIT.

Signed-off-by: Huang Pei <huangpei@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2024-01-27 11:07:57 +01:00
Thomas Bogendoerfer
c91c6b2f08 Revert "MIPS: loongson64: set nid for reserved memblock region"
This reverts commit ce7b1b97776ec0b068c4dd6b6dbb48ae09a23519.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2024-01-27 11:07:49 +01:00
Horatiu Vultur
62b4248105 net: lan966x: Fix port configuration when using SGMII interface
In case the interface between the MAC and the PHY is SGMII, then the bit
GIGA_MODE on the MAC side needs to be set regardless of the speed at
which it is running.

Fixes: d28d6d2e37d1 ("net: lan966x: add port module support")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-01-27 10:02:01 +00:00
Simon Horman
586e40aa88 MAINTAINERS: Add connector headers to NETWORKING DRIVERS
Commit 46cf789b68b2 ("connector: Move maintainence under networking
drivers umbrella.") moved the connector maintenance but did not include
the connector header files.

It seems that it has always been implied that these headers were
maintained along with the rest of the connector code, both before and
after the cited commit. Make this explicit.

Signed-off-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-01-27 09:59:48 +00:00
Linus Lüssing
0a186b49bb batman-adv: mcast: fix memory leak on deleting a batman-adv interface
The batman-adv multicast tracker TVLV handler is registered for the
new batman-adv multicast packet type upon creating a batman-adv interface,
but not unregistered again upon the interface's deletion, leading to a
memory leak.

Fix this memory leak by calling the according TVLV handler unregister
routine for the multicast tracker TVLV upon batman-adv interface
deletion.

Fixes: 07afe1ba288c ("batman-adv: mcast: implement multicast packet reception and forwarding")
Reported-and-tested-by: syzbot+ebe64cc5950868e77358@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/000000000000beadc4060f0cbc23@google.com/
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2024-01-27 09:13:39 +01:00
Linus Lüssing
59f7ea703c batman-adv: mcast: fix mcast packet type counter on timeouted nodes
When a node which does not have the new batman-adv multicast packet type
capability vanishes then the according, global counter erroneously would
not be reduced in response on other nodes. Which in turn leads to the mesh
never switching back to sending with the new multicast packet type.

Fix this by reducing the according counter when such a node times out.

Fixes: 90039133221e ("batman-adv: mcast: implement multicast packet generation")
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2024-01-27 09:13:39 +01:00
Jakub Kicinski
a70f258858 Merge branch 'net-dsa-microchip-implement-phy-loopback'
Oleksij Rempel says:

====================
net: dsa: microchip: implement PHY loopback
====================

Link: https://lore.kernel.org/r/20240124123314.734815-1-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:25:29 -08:00
Oleksij Rempel
9e62bed6e1 net: dsa: microchip: implement PHY loopback configuration for KSZ8794 and KSZ8873
Correct the PHY loopback bit handling in the ksz8_w_phy_bmcr and
ksz8_r_phy_bmcr functions for KSZ8794 and KSZ8873 variants in the ksz8795
driver. Previously, the code erroneously used Bit 7 of port register 0xD
for both chip variants, which is actually for LED configuration. This
update ensures the correct registers and bits are used for the PHY
loopback feature:

- For KSZ8794: Use 0xF / Bit 7.
- For KSZ8873: Use 0xD / Bit 0.

The lack of loopback support was seen on KSZ8873 system by using
"ethtool -t lanX". After this patch, the ethtool selftest will work,
but only if port is not part of a bridge.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Link: https://lore.kernel.org/r/20240124123314.734815-4-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:25:25 -08:00
Oleksij Rempel
d1b7d0d85d net: dsa: microchip: Remove redundant optimization in ksz8_w_phy_bmcr
Remove the manual checks for register value changes in the
ksz8_w_phy_bmcr function. Instead, rely on regmap_update_bits() for
optimizing register updates.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Link: https://lore.kernel.org/r/20240124123314.734815-3-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:25:24 -08:00
Oleksij Rempel
0c657f860e net: dsa: microchip: ksz8: move BMCR specific code to separate function
Isolate the Basic Mode Control Register (BMCR) operations in the ksz8795
driver by moving the BMCR-related code segments from the ksz8_r_phy()
and ksz8_w_phy() functions to newly created ksz8_r_phy_bmcr() and
ksz8_w_phy_bmcr() functions.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Link: https://lore.kernel.org/r/20240124123314.734815-2-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:25:24 -08:00
Jakub Kicinski
92046e83c0 bpf-next-for-netdev
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2024-01-26

We've added 107 non-merge commits during the last 4 day(s) which contain
a total of 101 files changed, 6009 insertions(+), 1260 deletions(-).

The main changes are:

1) Add BPF token support to delegate a subset of BPF subsystem
   functionality from privileged system-wide daemons such as systemd
   through special mount options for userns-bound BPF fs to a trusted
   & unprivileged application. With addressed changes from Christian
   and Linus' reviews, from Andrii Nakryiko.

2) Support registration of struct_ops types from modules which helps
   projects like fuse-bpf that seeks to implement a new struct_ops type,
   from Kui-Feng Lee.

3) Add support for retrieval of cookies for perf/kprobe multi links,
   from Jiri Olsa.

4) Bigger batch of prep-work for the BPF verifier to eventually support
   preserving boundaries and tracking scalars on narrowing fills,
   from Maxim Mikityanskiy.

5) Extend the tc BPF flavor to support arbitrary TCP SYN cookies to help
   with the scenario of SYN floods, from Kuniyuki Iwashima.

6) Add code generation to inline the bpf_kptr_xchg() helper which
   improves performance when stashing/popping the allocated BPF objects,
   from Hou Tao.

7) Extend BPF verifier to track aligned ST stores as imprecise spilled
   registers, from Yonghong Song.

8) Several fixes to BPF selftests around inline asm constraints and
   unsupported VLA code generation, from Jose E. Marchesi.

9) Various updates to the BPF IETF instruction set draft document such
   as the introduction of conformance groups for instructions,
   from Dave Thaler.

10) Fix BPF verifier to make infinite loop detection in is_state_visited()
    exact to catch some too lax spill/fill corner cases,
    from Eduard Zingerman.

11) Refactor the BPF verifier pointer ALU check to allow ALU explicitly
    instead of implicitly for various register types, from Hao Sun.

12) Fix the flaky tc_redirect_dtime BPF selftest due to slowness
    in neighbor advertisement at setup time, from Martin KaFai Lau.

13) Change BPF selftests to skip callback tests for the case when the
    JIT is disabled, from Tiezhu Yang.

14) Add a small extension to libbpf which allows to auto create
    a map-in-map's inner map, from Andrey Grafin.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (107 commits)
  selftests/bpf: Add missing line break in test_verifier
  bpf, docs: Clarify definitions of various instructions
  bpf: Fix error checks against bpf_get_btf_vmlinux().
  bpf: One more maintainer for libbpf and BPF selftests
  selftests/bpf: Incorporate LSM policy to token-based tests
  selftests/bpf: Add tests for LIBBPF_BPF_TOKEN_PATH envvar
  libbpf: Support BPF token path setting through LIBBPF_BPF_TOKEN_PATH envvar
  selftests/bpf: Add tests for BPF object load with implicit token
  selftests/bpf: Add BPF object loading tests with explicit token passing
  libbpf: Wire up BPF token support at BPF object level
  libbpf: Wire up token_fd into feature probing logic
  libbpf: Move feature detection code into its own file
  libbpf: Further decouple feature checking logic from bpf_object
  libbpf: Split feature detectors definitions from cached results
  selftests/bpf: Utilize string values for delegate_xxx mount options
  bpf: Support symbolic BPF FS delegation mount options
  bpf: Fail BPF_TOKEN_CREATE if no delegation option was set on BPF FS
  bpf,selinux: Allocate bpf_security_struct per BPF token
  selftests/bpf: Add BPF token-enabled tests
  libbpf: Add BPF token support to bpf_prog_load() API
  ...
====================

Link: https://lore.kernel.org/r/20240126215710.19855-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:08:22 -08:00
Nicolas Dichtel
e622502c31 ipmr: fix kernel panic when forwarding mcast packets
The stacktrace was:
[   86.305548] BUG: kernel NULL pointer dereference, address: 0000000000000092
[   86.306815] #PF: supervisor read access in kernel mode
[   86.307717] #PF: error_code(0x0000) - not-present page
[   86.308624] PGD 0 P4D 0
[   86.309091] Oops: 0000 [#1] PREEMPT SMP NOPTI
[   86.309883] CPU: 2 PID: 3139 Comm: pimd Tainted: G     U             6.8.0-6wind-knet #1
[   86.311027] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.11.1-0-g0551a4be2c-prebuilt.qemu-project.org 04/01/2014
[   86.312728] RIP: 0010:ip_mr_forward (/build/work/knet/net/ipv4/ipmr.c:1985)
[ 86.313399] Code: f9 1f 0f 87 85 03 00 00 48 8d 04 5b 48 8d 04 83 49 8d 44 c5 00 48 8b 40 70 48 39 c2 0f 84 d9 00 00 00 49 8b 46 58 48 83 e0 fe <80> b8 92 00 00 00 00 0f 84 55 ff ff ff 49 83 47 38 01 45 85 e4 0f
[   86.316565] RSP: 0018:ffffad21c0583ae0 EFLAGS: 00010246
[   86.317497] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   86.318596] RDX: ffff9559cb46c000 RSI: 0000000000000000 RDI: 0000000000000000
[   86.319627] RBP: ffffad21c0583b30 R08: 0000000000000000 R09: 0000000000000000
[   86.320650] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
[   86.321672] R13: ffff9559c093a000 R14: ffff9559cc00b800 R15: ffff9559c09c1d80
[   86.322873] FS:  00007f85db661980(0000) GS:ffff955a79d00000(0000) knlGS:0000000000000000
[   86.324291] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   86.325314] CR2: 0000000000000092 CR3: 000000002f13a000 CR4: 0000000000350ef0
[   86.326589] Call Trace:
[   86.327036]  <TASK>
[   86.327434] ? show_regs (/build/work/knet/arch/x86/kernel/dumpstack.c:479)
[   86.328049] ? __die (/build/work/knet/arch/x86/kernel/dumpstack.c:421 /build/work/knet/arch/x86/kernel/dumpstack.c:434)
[   86.328508] ? page_fault_oops (/build/work/knet/arch/x86/mm/fault.c:707)
[   86.329107] ? do_user_addr_fault (/build/work/knet/arch/x86/mm/fault.c:1264)
[   86.329756] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223)
[   86.330350] ? __irq_work_queue_local (/build/work/knet/kernel/irq_work.c:111 (discriminator 1))
[   86.331013] ? exc_page_fault (/build/work/knet/./arch/x86/include/asm/paravirt.h:693 /build/work/knet/arch/x86/mm/fault.c:1515 /build/work/knet/arch/x86/mm/fault.c:1563)
[   86.331702] ? asm_exc_page_fault (/build/work/knet/./arch/x86/include/asm/idtentry.h:570)
[   86.332468] ? ip_mr_forward (/build/work/knet/net/ipv4/ipmr.c:1985)
[   86.333183] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223)
[   86.333920] ipmr_mfc_add (/build/work/knet/./include/linux/rcupdate.h:782 /build/work/knet/net/ipv4/ipmr.c:1009 /build/work/knet/net/ipv4/ipmr.c:1273)
[   86.334583] ? __pfx_ipmr_hash_cmp (/build/work/knet/net/ipv4/ipmr.c:363)
[   86.335357] ip_mroute_setsockopt (/build/work/knet/net/ipv4/ipmr.c:1470)
[   86.336135] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223)
[   86.336854] ? ip_mroute_setsockopt (/build/work/knet/net/ipv4/ipmr.c:1470)
[   86.337679] do_ip_setsockopt (/build/work/knet/net/ipv4/ip_sockglue.c:944)
[   86.338408] ? __pfx_unix_stream_read_actor (/build/work/knet/net/unix/af_unix.c:2862)
[   86.339232] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223)
[   86.339809] ? aa_sk_perm (/build/work/knet/security/apparmor/include/cred.h:153 /build/work/knet/security/apparmor/net.c:181)
[   86.340342] ip_setsockopt (/build/work/knet/net/ipv4/ip_sockglue.c:1415)
[   86.340859] raw_setsockopt (/build/work/knet/net/ipv4/raw.c:836)
[   86.341408] ? security_socket_setsockopt (/build/work/knet/security/security.c:4561 (discriminator 13))
[   86.342116] sock_common_setsockopt (/build/work/knet/net/core/sock.c:3716)
[   86.342747] do_sock_setsockopt (/build/work/knet/net/socket.c:2313)
[   86.343363] __sys_setsockopt (/build/work/knet/./include/linux/file.h:32 /build/work/knet/net/socket.c:2336)
[   86.344020] __x64_sys_setsockopt (/build/work/knet/net/socket.c:2340)
[   86.344766] do_syscall_64 (/build/work/knet/arch/x86/entry/common.c:52 /build/work/knet/arch/x86/entry/common.c:83)
[   86.345433] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223)
[   86.346161] ? syscall_exit_work (/build/work/knet/./include/linux/audit.h:357 /build/work/knet/kernel/entry/common.c:160)
[   86.346938] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223)
[   86.347657] ? syscall_exit_to_user_mode (/build/work/knet/kernel/entry/common.c:215)
[   86.348538] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223)
[   86.349262] ? do_syscall_64 (/build/work/knet/./arch/x86/include/asm/cpufeature.h:171 /build/work/knet/arch/x86/entry/common.c:98)
[   86.349971] entry_SYSCALL_64_after_hwframe (/build/work/knet/arch/x86/entry/entry_64.S:129)

The original packet in ipmr_cache_report() may be queued and then forwarded
with ip_mr_forward(). This last function has the assumption that the skb
dst is set.

After the below commit, the skb dst is dropped by ipv4_pktinfo_prepare(),
which causes the oops.

Fixes: bb7403655b3c ("ipmr: support IP_PKTINFO on cache report IGMP msg")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240125141847.1931933-1-nicolas.dichtel@6wind.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:05:26 -08:00
Jakub Kicinski
c09f32a859 Merge branch 'net-phy-generic-polarity-led-support-for-qca808x'
Christian Marangi says:

====================
net: phy: generic polarity + LED support for qca808x

This small series add LEDs support for qca808x.

QCA808x apply on PHY reset a strange polarity settings and require
some tweak to apply a more common configuration found on devices.
On adding support for it, it was pointed out that a similar
feature is also being implemented for a marvell PHY where
LED polarity is set per LED (and not global) and also have
a special mode where the LED is tristated.

The first 3 patch are to generalize this as we expect more PHY
in the future to have a similar configuration.

The implementation is extensible to support additional special
mode in the future with minimal changes and don't create regression
on already implemented PHY drivers.
====================

Link: https://lore.kernel.org/r/20240125203702.4552-1-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:03:43 -08:00
Christian Marangi
7196062b64 net: phy: at803x: add LED support for qca808x
Add LED support for QCA8081 PHY.

Documentation for this LEDs PHY is very scarce even with NDA access
to Documentation for OEMs. Only the blink pattern are documented and are
very confusing most of the time. No documentation is present about
forcing the LED on/off or to always blink.

Those settings were reversed by poking the regs and trying to find the
correct bits to trigger these modes. Some bits mode are not clear and
maybe the documentation option are not 100% correct. For the sake of LED
support the reversed option are enough to add support for current LED
APIs.

Supported HW control modes are:
- tx
- rx
- link_10
- link_100
- link_1000
- link_2500
- half_duplex
- full_duplex

Also add support for LED polarity set to set LED polarity to active
high or low. QSDK sets this value to high by default but PHY reset value
doesn't have this enabled by default.

QSDK also sets 2 additional bits but their usage is not clear, info about
this is added in the header. It was verified that for correct function
of the LED if active high is needed, only BIT 6 is needed.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20240125203702.4552-6-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:03:31 -08:00
Christian Marangi
91e893b43d dt-bindings: net: Document QCA808x PHYs
Add Documentation for QCA808x PHYs for the additional LED configuration
for this PHY.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20240125203702.4552-5-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:03:31 -08:00
Christian Marangi
7ae215ee7b net: phy: add support for PHY LEDs polarity modes
Add support for PHY LEDs polarity modes. Some PHY require LED to be set
to active low to be turned ON. Adds support for this by declaring
active-low property in DT.

PHY driver needs to declare .led_polarity_set() to configure LED
polarity modes. Function will pass the index with the LED index and a
bitmap with all the required modes to set.

Current supported modes are:
- active-low with the flag PHY_LED_ACTIVE_LOW. LED is set to active-low
  to turn it ON.
- inactive-high-impedance with the flag PHY_LED_INACTIVE_HIGH_IMPEDANCE.
  LED is set to high impedance to turn it OFF.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20240125203702.4552-4-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:03:31 -08:00
Christian Marangi
355c6dc37e dt-bindings: net: phy: Document LED inactive high impedance mode
Document LED inactive high impedance mode to set the LED to require high
impedance configuration to be turned OFF.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Lee Jones <lee@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20240125203702.4552-3-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:03:31 -08:00
Christian Marangi
c94d178313 dt-bindings: net: phy: Make LED active-low property common
Move LED active-low property to common.yaml. This property is currently
defined multiple times by bcm LEDs. This property will now be supported
in a generic way for PHY LEDs with the use of a generic function.

With active-low bool property not defined, active-high is always
assumed.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Lee Jones <lee@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20240125203702.4552-2-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:03:31 -08:00
Kees Cook
5642c82b94 bnx2x: Fix firmware version string character counts
A potential string truncation was reported in bnx2x_fill_fw_str(),
when a long bp->fw_ver and a long phy_fw_ver might coexist, but seems
unlikely with real-world hardware.

Use scnprintf() to indicate the intent that truncations are tolerated.

While reading this code, I found a collection of various buffer size
counting issues. None looked like they might lead to a buffer overflow
with current code (the small buffers are 20 bytes and might only ever
consume 10 bytes twice with a trailing %NUL). However, early truncation
(due to a %NUL in the middle of the string) might be happening under
likely rare conditions. Regardless fix the formatters and related
functions:

- Switch from a separate strscpy() to just adding an additional "%s" to
  the format string that immediately follows it in bnx2x_fill_fw_str().
- Use sizeof() universally instead of using unbound defines.
- Fix bnx2x_7101_format_ver() and bnx2x_null_format_ver() to report the
  number of characters written, not including the trailing %NUL (as
  already done with the other firmware formatting functions).
- Require space for at least 1 byte in bnx2x_get_ext_phy_fw_version()
  for the trailing %NUL.
- Correct the needed buffer size in bnx2x_3_seq_format_ver().

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401260858.jZN6vD1k-lkp@intel.com/
Cc: Ariel Elior <aelior@marvell.com>
Cc: Sudarsana Kalluru <skalluru@marvell.com>
Cc: Manish Chopra <manishc@marvell.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20240126041044.work.220-kees@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 21:01:30 -08:00
Li Zhijian
8d0293302d drivers/ptp: Convert snprintf to sysfs_emit
Per filesystems/sysfs.rst, show() should only use sysfs_emit()
or sysfs_emit_at() when formatting the value to be returned to user space.

coccinelle complains that there are still a couple of functions that use
snprintf(). Convert them to sysfs_emit().

> ./drivers/ptp/ptp_sysfs.c:27:8-16: WARNING: please use sysfs_emit

No functional change intended

Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Link: https://lore.kernel.org/r/20240125015329.123023-1-lizhijian@fujitsu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 20:35:17 -08:00
Jakub Kicinski
1cf05e2508 Merge branch 'af_unix-random-improvements-for-gc'
Kuniyuki Iwashima says:

====================
af_unix: Random improvements for GC.

If more than 16000 inflight AF_UNIX sockets exist on a host, each
sendmsg() will be forced to wait for unix_gc() even if a process
is not sending any FD.

This series tries not to impose such a penalty on sane users who
do not send AF_UNIX FDs or do not have inflight sockets more than
SCM_MAX_FD * 8.

The first patch can be backported to -stable.

Cleanup patches for commit 69db702c8387 ("io_uring/af_unix: disable
sending io_uring over sockets") and large refactoring of GC will
be followed later.

v4: https://lore.kernel.org/netdev/20231219030102.27509-1-kuniyu@amazon.com/
v3: https://lore.kernel.org/netdev/20231218075020.60826-1-kuniyu@amazon.com/
v2: https://lore.kernel.org/netdev/20231123014747.66063-1-kuniyu@amazon.com/
v1: https://lore.kernel.org/netdev/20231122013629.28554-1-kuniyu@amazon.com/
====================

Link: https://lore.kernel.org/r/20240123170856.41348-1-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 20:34:28 -08:00
Kuniyuki Iwashima
d9f21b3613 af_unix: Try to run GC async.
If more than 16000 inflight AF_UNIX sockets exist and the garbage
collector is not running, unix_(dgram|stream)_sendmsg() call unix_gc().
Also, they wait for unix_gc() to complete.

In unix_gc(), all inflight AF_UNIX sockets are traversed at least once,
and more if they are the GC candidate.  Thus, sendmsg() significantly
slows down with too many inflight AF_UNIX sockets.

However, if a process sends data with no AF_UNIX FD, the sendmsg() call
does not need to wait for GC.  After this change, only the process that
meets the condition below will be blocked under such a situation.

  1) cmsg contains AF_UNIX socket
  2) more than 32 AF_UNIX sent by the same user are still inflight

Note that even a sendmsg() call that does not meet the condition but has
AF_UNIX FD will be blocked later in unix_scm_to_skb() by the spinlock,
but we allow that as a bonus for sane users.

The results below are the time spent in unix_dgram_sendmsg() sending 1
byte of data with no FD 4096 times on a host where 32K inflight AF_UNIX
sockets exist.

Without series: the sane sendmsg() needs to wait gc unreasonably.

  $ sudo /usr/share/bcc/tools/funclatency -p 11165 unix_dgram_sendmsg
  Tracing 1 functions for "unix_dgram_sendmsg"... Hit Ctrl-C to end.
  ^C
       nsecs               : count     distribution
  [...]
      524288 -> 1048575    : 0        |                                        |
     1048576 -> 2097151    : 3881     |****************************************|
     2097152 -> 4194303    : 214      |**                                      |
     4194304 -> 8388607    : 1        |                                        |

  avg = 1825567 nsecs, total: 7477526027 nsecs, count: 4096

With series: the sane sendmsg() can finish much faster.

  $ sudo /usr/share/bcc/tools/funclatency -p 8702  unix_dgram_sendmsg
  Tracing 1 functions for "unix_dgram_sendmsg"... Hit Ctrl-C to end.
  ^C
       nsecs               : count     distribution
  [...]
         128 -> 255        : 0        |                                        |
         256 -> 511        : 4092     |****************************************|
         512 -> 1023       : 2        |                                        |
        1024 -> 2047       : 0        |                                        |
        2048 -> 4095       : 0        |                                        |
        4096 -> 8191       : 1        |                                        |
        8192 -> 16383      : 1        |                                        |

  avg = 410 nsecs, total: 1680510 nsecs, count: 4096

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240123170856.41348-6-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 20:34:25 -08:00
Kuniyuki Iwashima
8b90a9f819 af_unix: Run GC on only one CPU.
If more than 16000 inflight AF_UNIX sockets exist and the garbage
collector is not running, unix_(dgram|stream)_sendmsg() call unix_gc().
Also, they wait for unix_gc() to complete.

In unix_gc(), all inflight AF_UNIX sockets are traversed at least once,
and more if they are the GC candidate.  Thus, sendmsg() significantly
slows down with too many inflight AF_UNIX sockets.

There is a small window to invoke multiple unix_gc() instances, which
will then be blocked by the same spinlock except for one.

Let's convert unix_gc() to use struct work so that it will not consume
CPUs unnecessarily.

Note WRITE_ONCE(gc_in_progress, true) is moved before running GC.
If we leave the WRITE_ONCE() as is and use the following test to
call flush_work(), a process might not call it.

    CPU 0                                     CPU 1
    ---                                       ---
                                              start work and call __unix_gc()
    if (work_pending(&unix_gc_work) ||        <-- false
        READ_ONCE(gc_in_progress))            <-- false
            flush_work();                     <-- missed!
	                                      WRITE_ONCE(gc_in_progress, true)

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240123170856.41348-5-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 20:34:25 -08:00
Kuniyuki Iwashima
5b17307bd0 af_unix: Return struct unix_sock from unix_get_socket().
Currently, unix_get_socket() returns struct sock, but after calling
it, we always cast it to unix_sk().

Let's return struct unix_sock from unix_get_socket().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Acked-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240123170856.41348-4-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 20:34:25 -08:00
Kuniyuki Iwashima
97af84a6bb af_unix: Do not use atomic ops for unix_sk(sk)->inflight.
When touching unix_sk(sk)->inflight, we are always under
spin_lock(&unix_gc_lock).

Let's convert unix_sk(sk)->inflight to the normal unsigned long.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240123170856.41348-3-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 20:34:24 -08:00
Kuniyuki Iwashima
31e0320711 af_unix: Annotate data-race of gc_in_progress in wait_for_unix_gc().
gc_in_progress is changed under spin_lock(&unix_gc_lock),
but wait_for_unix_gc() reads it locklessly.

Let's use READ_ONCE().

Fixes: 5f23b734963e ("net: Fix soft lockups/OOM issues w/ unix garbage collector")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240123170856.41348-2-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 20:34:24 -08:00
Arınç ÜNAL
fb4bb62aaa net: dsa: mt7530: select MEDIATEK_GE_PHY for NET_DSA_MT7530_MDIO
Quoting from commit 4223f8651287 ("net: dsa: mt7530: make NET_DSA_MT7530
select MEDIATEK_GE_PHY"):

Make MediaTek MT753x DSA driver enable MediaTek Gigabit PHYs driver to
properly control MT7530 and MT7531 switch PHYs.

A noticeable change is that the behaviour of switchport interfaces going
up-down-up-down is no longer there.

Now, the switch can be used without the PHYs but, at the moment, every
hardware design out there that I have seen uses them. For that, it would
make the most sense to force the selection of MEDIATEK_GE_PHY for the MDIO
interface which currently controls the MT7530 and MT7531 switches.

Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20240122053451.8004-1-arinc.unal@arinc9.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 20:31:52 -08:00
Chunhai Guo
d9281660ff erofs: relaxed temporary buffers allocation on readahead
Even with inplace decompression, sometimes very few temporary buffers
may be still needed for a single decompression shot (e.g. 16 pages for
64k sliding window or 4 pages for 16k sliding window).  In low-memory
scenarios, it would be better to try to allocate with GFP_NOWAIT on
readahead first.  That can help reduce the time spent on page allocation
under durative memory pressure.

Here are detailed performance numbers under multi-app launch benchmark
workload [1] on ARM64 Android devices (8-core CPU and 8GB of memory)
running a 5.15 LTS kernel with EROFS of 4k pclusters:

+----------------------------------------------+
|      LZ4       | vanilla | patched |  diff   |
|----------------+---------+---------+---------|
|  Average (ms)  |  3364   |  2684   | -20.21% | [64k sliding window]
|----------------+---------+---------+---------|
|  Average (ms)  |  2079   |  1610   | -22.56% | [16k sliding window]
+----------------------------------------------+

The total size of system images for 4k pclusters is almost unchanged:
(64k sliding window)  9,117,044 KB
(16k sliding window)  9,113,096 KB

Therefore, in addition to switch the sliding window from 64k to 16k,
after applying this patch, it can eventually save 52.14% (3364 -> 1610)
on average with no memory reservation.  That is particularly useful for
embedded devices with limited resources.

[1] https://lore.kernel.org/r/20240109074143.4138783-1-guochunhai@vivo.com

Suggested-by: Gao Xiang <xiang@kernel.org>
Signed-off-by: Chunhai Guo <guochunhai@vivo.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Yue Hu <huyue2@coolpad.com>
Link: https://lore.kernel.org/r/20240126140142.201718-1-hsiangkao@linux.alibaba.com
2024-01-27 12:28:08 +08:00
Linus Torvalds
3a5879d495 ata changes for 6.8-rc2
- Fix an incorrect link_power_management_policy sysfs attribute
    value. We were previously using the same attribute value for
    two different LPM policies (me).
 
  - Add a ASMedia ASM1166 quirk. The SATA host controller always
    reports that it has 32 ports, even though it only has six ports.
    Add a quirk that overrides the value reported by the controller
    (Conrad).
 
  - Add a ASMedia ASM1061 quirk. The SATA host controller completely
    ignores the upper 21 bits of the DMA address. This causes IOMMU
    error events when a (valid) DMA address actually has any of the
    upper 21 bits set. Add a quirk that limits the dma_mask to
    43-bits (Lennert).
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Merge tag 'ata-6.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux

Pull ata updates from Niklas Cassel:

 - Fix an incorrect link_power_management_policy sysfs attribute value.

   We were previously using the same attribute value for two different
   LPM policies (me)

 - Add a ASMedia ASM1166 quirk.

   The SATA host controller always reports that it has 32 ports, even
   though it only has six ports. Add a quirk that overrides the value
   reported by the controller (Conrad)

 - Add a ASMedia ASM1061 quirk.

   The SATA host controller completely ignores the upper 21 bits of the
   DMA address. This causes IOMMU error events when a (valid) DMA
   address actually has any of the upper 21 bits set. Add a quirk that
   limits the dma_mask to 43-bits (Lennert)

* tag 'ata-6.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
  ahci: add 43-bit DMA address quirk for ASMedia ASM1061 controllers
  ahci: asm1166: correct count of reported ports
  ata: libata-sata: improve sysfs description for ATA_LPM_UNKNOWN
2024-01-26 15:24:00 -08:00
Linus Torvalds
914e17088e block-6.8-2024-01-26
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Merge tag 'block-6.8-2024-01-26' of git://git.kernel.dk/linux

Pull block fixes from Jens Axboe:

 - RCU warning fix for md (Mikulas)

 - Fix for an aoe issue that lockdep rightfully complained about
   (Maksim)

 - Fix for an error code change in partitioning that caused a regression
   with some tools (Li)

 - Fix for a data direction warning with bi-direction commands
   (Christian)

* tag 'block-6.8-2024-01-26' of git://git.kernel.dk/linux:
  md: fix a suspicious RCU usage warning
  aoe: avoid potential deadlock at set_capacity
  block: Fix WARNING in _copy_from_iter
  block: Move checking GENHD_FL_NO_PART to bdev_add_partition()
2024-01-26 15:19:43 -08:00
Linus Torvalds
cced1c5e72 io_uring-6.8-2024-01-26
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Merge tag 'io_uring-6.8-2024-01-26' of git://git.kernel.dk/linux

Pull io_uring fix from Jens Axboe:
 "Just a single tweak to the newly added IORING_OP_FIXED_FD_INSTALL from
  Paul, ensuring it goes via the audit path and playing it safe by
  excluding it from using registered creds"

* tag 'io_uring-6.8-2024-01-26' of git://git.kernel.dk/linux:
  io_uring: enable audit and restrict cred override for IORING_OP_FIXED_FD_INSTALL
2024-01-26 15:17:42 -08:00
Linus Torvalds
667c889308 Thermal control update for 6.8-rc2
Remove some dead code from the Intel powerclamp thermal control
 driver (Srinivas Pandruvada).
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Merge tag 'thermal-6.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control update from Rafael Wysocki:
 "Remove some dead code from the Intel powerclamp thermal control driver
  (Srinivas Pandruvada)"

* tag 'thermal-6.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: intel: powerclamp: Remove dead code for target mwait value
2024-01-26 15:06:23 -08:00
Linus Torvalds
0c879d8813 Power management fixes for 6.8-rc2
- Fix the handling of scaling_max/min_freq sysfs attributes in the AMD
    P-state cpufreq driver (Mario Limonciello).
 
  - Make the intel_pstate cpufreq driver avoid unnecessary computation of
    the HWP performance level corresponding to a given frequency in the
    cases when it is known already, which also helps to avoid reducing
    the maximum CPU capacity artificially on some systems (Rafael J.
    Wysocki).
 
  - Fix compilation of the cpupower utility when CFLAGS is passed as a
    make argument for cpupower, but it does not take effect as expected
    due to mishandling (Stanley Chan).
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Merge tag 'pm-6.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix two cpufreq drivers and the cpupower utility.

  Specifics:

   - Fix the handling of scaling_max/min_freq sysfs attributes in the
     AMD P-state cpufreq driver (Mario Limonciello)

   - Make the intel_pstate cpufreq driver avoid unnecessary computation
     of the HWP performance level corresponding to a given frequency in
     the cases when it is known already, which also helps to avoid
     reducing the maximum CPU capacity artificially on some systems
     (Rafael J. Wysocki)

   - Fix compilation of the cpupower utility when CFLAGS is passed as a
     make argument for cpupower, but it does not take effect as expected
     due to mishandling (Stanley Chan)"

* tag 'pm-6.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq/amd-pstate: Fix setting scaling max/min freq values
  cpufreq: intel_pstate: Refine computation of P-state for given frequency
  tools cpupower bench: Override CFLAGS assignments
2024-01-26 14:53:28 -08:00
Linus Torvalds
70da22eb63 A handful of relatively boring documentation fixes.
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Merge tag 'docs-6.8-fixes' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A handful of relatively boring documentation fixes"

* tag 'docs-6.8-fixes' of git://git.lwn.net/linux:
  docs: admin-guide: remove obsolete advice related to SLAB allocator
  doc: admin-guide/kernel-parameters: remove useless comment
  docs/accel: correct links to mailing list archives
  docs/sphinx: Fix TOC scroll hack for the home page
2024-01-26 14:51:41 -08:00
Ondrej Mosnacek
99b817c173 lsm: fix the logic in security_inode_getsecctx()
The inode_getsecctx LSM hook has previously been corrected to have
-EOPNOTSUPP instead of 0 as the default return value to fix BPF LSM
behavior. However, the call_int_hook()-generated loop in
security_inode_getsecctx() was left treating 0 as the neutral value, so
after an LSM returns 0, the loop continues to try other LSMs, and if one
of them returns a non-zero value, the function immediately returns with
said value. So in a situation where SELinux and the BPF LSMs registered
this hook, -EOPNOTSUPP would be incorrectly returned whenever SELinux
returned 0.

Fix this by open-coding the call_int_hook() loop and making it use the
correct LSM_RET_DEFAULT() value as the neutral one, similar to what
other hooks do.

Cc: stable@vger.kernel.org
Reported-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Link: https://lore.kernel.org/selinux/CAEjxPJ4ev-pasUwGx48fDhnmjBnq_Wh90jYPwRQRAqXxmOKD4Q@mail.gmail.com/
Link: https://bugzilla.redhat.com/show_bug.cgi?id=2257983
Fixes: b36995b8609a ("lsm: fix default return value for inode_getsecctx")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Reviewed-by: Casey Schaufler <casey@schaufler-ca.com>
[PM: subject line tweak]
Signed-off-by: Paul Moore <paul@paul-moore.com>
2024-01-26 17:19:00 -05:00
Daniel Golle
dfa988b4c7 net: dsa: mt7530: fix 10M/100M speed on MT7988 switch
Setup PMCR port register for actual speed and duplex on internally
connected PHYs of the MT7988 built-in switch. This fixes links with
speeds other than 1000M.

Fixes: 110c18bfed41 ("net: dsa: mt7530: introduce driver for MT7988 built-in switch")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Link: https://lore.kernel.org/r/a5b04dfa8256d8302f402545a51ac4c626fdba25.1706071272.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 14:18:39 -08:00
Eric Dumazet
8d975c15c0 ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()
syzbot found __ip6_tnl_rcv() could access unitiliazed data [1].

Call pskb_inet_may_pull() to fix this, and initialize ipv6h
variable after this call as it can change skb->head.

[1]
 BUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]
 BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]
 BUG: KMSAN: uninit-value in IP6_ECN_decapsulate+0x7df/0x1e50 include/net/inet_ecn.h:321
  __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]
  INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]
  IP6_ECN_decapsulate+0x7df/0x1e50 include/net/inet_ecn.h:321
  ip6ip6_dscp_ecn_decapsulate+0x178/0x1b0 net/ipv6/ip6_tunnel.c:727
  __ip6_tnl_rcv+0xd4e/0x1590 net/ipv6/ip6_tunnel.c:845
  ip6_tnl_rcv+0xce/0x100 net/ipv6/ip6_tunnel.c:888
 gre_rcv+0x143f/0x1870
  ip6_protocol_deliver_rcu+0xda6/0x2a60 net/ipv6/ip6_input.c:438
  ip6_input_finish net/ipv6/ip6_input.c:483 [inline]
  NF_HOOK include/linux/netfilter.h:314 [inline]
  ip6_input+0x15d/0x430 net/ipv6/ip6_input.c:492
  ip6_mc_input+0xa7e/0xc80 net/ipv6/ip6_input.c:586
  dst_input include/net/dst.h:461 [inline]
  ip6_rcv_finish+0x5db/0x870 net/ipv6/ip6_input.c:79
  NF_HOOK include/linux/netfilter.h:314 [inline]
  ipv6_rcv+0xda/0x390 net/ipv6/ip6_input.c:310
  __netif_receive_skb_one_core net/core/dev.c:5532 [inline]
  __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5646
  netif_receive_skb_internal net/core/dev.c:5732 [inline]
  netif_receive_skb+0x58/0x660 net/core/dev.c:5791
  tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555
  tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002
  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048
  call_write_iter include/linux/fs.h:2084 [inline]
  new_sync_write fs/read_write.c:497 [inline]
  vfs_write+0x786/0x1200 fs/read_write.c:590
  ksys_write+0x20f/0x4c0 fs/read_write.c:643
  __do_sys_write fs/read_write.c:655 [inline]
  __se_sys_write fs/read_write.c:652 [inline]
  __x64_sys_write+0x93/0xd0 fs/read_write.c:652
  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
  do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Uninit was created at:
  slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768
  slab_alloc_node mm/slub.c:3478 [inline]
  kmem_cache_alloc_node+0x5e9/0xb10 mm/slub.c:3523
  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560
  __alloc_skb+0x318/0x740 net/core/skbuff.c:651
  alloc_skb include/linux/skbuff.h:1286 [inline]
  alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6334
  sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2787
  tun_alloc_skb drivers/net/tun.c:1531 [inline]
  tun_get_user+0x1e8a/0x66d0 drivers/net/tun.c:1846
  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048
  call_write_iter include/linux/fs.h:2084 [inline]
  new_sync_write fs/read_write.c:497 [inline]
  vfs_write+0x786/0x1200 fs/read_write.c:590
  ksys_write+0x20f/0x4c0 fs/read_write.c:643
  __do_sys_write fs/read_write.c:655 [inline]
  __se_sys_write fs/read_write.c:652 [inline]
  __x64_sys_write+0x93/0xd0 fs/read_write.c:652
  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
  do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

CPU: 0 PID: 5034 Comm: syz-executor331 Not tainted 6.7.0-syzkaller-00562-g9f8413c4a66f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023

Fixes: 0d3c703a9d17 ("ipv6: Cleanup IPv6 tunnel receive path")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240125170557.2663942-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 14:16:40 -08:00
Paolo Abeni
89abe62837 selftests: net: give more time for GRO aggregation
The gro.sh test-case relay on the gro_flush_timeout to ensure
that all the segments belonging to any given batch are properly
aggregated.

The other end, the sender is a user-space program transmitting
each packet with a separate write syscall. A busy host and/or
stracing the sender program can make the relevant segments reach
the GRO engine after the flush timeout triggers.

Give the GRO flush timeout more slack, to avoid sporadic self-tests
failures.

Fixes: 9af771d2ec04 ("selftests/net: allow GRO coalesce test on veth")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Tested-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/bffec2beab3a5672dd13ecabe4fad81d2155b367.1706206101.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 14:11:57 -08:00
Paolo Abeni
d3cb3b0088 selftests: net: add missing required classifier
the udpgro_fraglist self-test uses the BPF classifiers, but the
current net self-test configuration does not include it, causing
CI failures:

 # selftests: net: udpgro_frglist.sh
 # ipv6
 # tcp - over veth touching data
 # -l 4 -6 -D 2001:db8::1 -t rx -4 -t
 # Error: TC classifier not found.
 # We have an error talking to the kernel
 # Error: TC classifier not found.
 # We have an error talking to the kernel

Add the missing knob.

Fixes: edae34a3ed92 ("selftests net: add UDP GRO fraglist + bpf self-tests")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Maciej Żenczykowski <maze@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/7c3643763b331e9a400e1874fe089193c99a1c3f.1706170897.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 14:09:30 -08:00
Breno Leitao
281cb9d65a bnxt_en: Make PTP timestamp HWRM more silent
commit 056bce63c469 ("bnxt_en: Make PTP TX timestamp HWRM query silent")
changed a netdev_err() to netdev_WARN_ONCE().

netdev_WARN_ONCE() is it generates a kernel WARNING, which is bad, for
the following reasons:

 * You do not a kernel warning if the firmware queries are late
 * In busy networks, timestamp query failures fairly regularly
 * A WARNING message doesn't bring much value, since the code path
is clear.
(This was discussed in-depth in [1])

Transform the netdev_WARN_ONCE() into a netdev_warn_once(), and print a
more well-behaved message, instead of a full WARN().

	bnxt_en 0000:67:00.0 eth0: TS query for TX timer failed rc = fffffff5

[1] Link: https://lore.kernel.org/all/ZbDj%2FFI4EJezcfd1@gmail.com/
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Fixes: 056bce63c469 ("bnxt_en: Make PTP TX timestamp HWRM query silent")
Link: https://lore.kernel.org/r/20240125134104.2045573-1-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 14:06:21 -08:00
Wen Gu
c3dfcdb65e net/smc: fix incorrect SMC-D link group matching logic
The logic to determine if SMC-D link group matches is incorrect. The
correct logic should be that it only returns true when the GID is the
same, and the SMC-D device is the same and the extended GID is the same
(in the case of virtual ISM).

It can be fixed by adding brackets around the conditional (or ternary)
operator expression. But for better readability and maintainability, it
has been changed to an if-else statement.

Reported-by: Matthew Rosato <mjrosato@linux.ibm.com>
Closes: https://lore.kernel.org/r/13579588-eb9d-4626-a063-c0b77ed80f11@linux.ibm.com
Fixes: b40584d14570 ("net/smc: compatible with 128-bits extended GID of virtual ISM device")
Link: https://lore.kernel.org/r/13579588-eb9d-4626-a063-c0b77ed80f11@linux.ibm.com
Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://lore.kernel.org/r/20240125123916.77928-1-guwen@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-26 14:06:05 -08:00
Linus Torvalds
168174d781 drm fixes for 6.8-rc2
fb:
 - fix simpledrm/i915 regression by reverting change
 
 scheduler:
 - fix regression affecting amdgpu users due to sched draining
 
 nouveau:
 - revert 6.7 deadlock fix as it has side effects
 
 dp:
 - fix documentation warning
 
 ttm:
 - fix dummy page read on some platforms
 
 bridge:
 - anx7625 suspend fix
 - sii902x: fix probing and audio registration
 - parade-ps8640: fix suspend of bridge, aux fixes
 - samsung-dsim: avoid using FORCE_STOP_STATE
 
 panel:
 - simple add missing bus flags
 - fix samsung-s6d7aa0 flags
 
 amdgpu:
 - AC/DC power supply tracking fix
 - Don't show invalid vram vendor data
 - SMU 13.0.x fixes
 - GART fix for umr on systems without VRAM
 - GFX 10/11 UNORD_DISPATCH fixes
 - IPS display fixes (required for S0ix on some platforms)
 - Misc fixes
 
 i915:
 - DSI sequence revert to fix GitLab #10071 and DP test-pattern fix
 - Drop -Wstringop-overflow (broken on GCC11)
 
 ivpu:
 - fix recovery/reset support
 - improve submit ioctl stability
 - fix dev open/close races on unbind
 - PLL disable reset fix
 - deprecate context priority param
 - improve debug buffer logging
 - disable buffer sharing across VPU contexts
 - free buffer sgt on unbind
 - fix missing lock around shmem vmap
 - add better boot diagnostics
 - add more debug prints around mapping
 - dump MMU events in case of timeout
 
 v3d:
 - NULL ptr dereference fix
 
 exynos:
 - fix stack usage
 - fix incorrect type
 - fix dt typo
 - fix gsc runtime resume
 
 xe:
 - Make an ops struct static
 - Fix an implicit 0 to NULL conversion
 - A couple of 32-bit fixes
 - A migration coherency fix for Lunar Lake.
 - An error path vm id leak fix
 - Remove PVC references in kunit tests
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Merge tag 'drm-fixes-2024-01-27' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Lots going on for rc2, ivpu has a bunch of stabilisation and debugging
  work, then amdgpu and xe are the main fixes. i915, exynos have a few,
  then some misc panel and bridge fixes.

  Worth mentioning are three regressions. One of the nouveau fixes in
  6.7 for a serious deadlock had side effects, so I guess we will bring
  back the deadlock until I can figure out what should be done properly.
  There was a scheduler regression vs amdgpu which was reported in a few
  places and is now fixed. There was an i915 vs simpledrm problem
  resulting in black screens, that is reverted also.

  I'll be working on a proper nouveau fix, it kinda looks like one of
  those cases where someone tried to use an atomic where they should
  have probably used a lock, but I'll see.

  fb:
   - fix simpledrm/i915 regression by reverting change

  scheduler:
   - fix regression affecting amdgpu users due to sched draining

  nouveau:
   - revert 6.7 deadlock fix as it has side effects

  dp:
   - fix documentation warning

  ttm:
   - fix dummy page read on some platforms

  bridge:
   - anx7625 suspend fix
   - sii902x: fix probing and audio registration
   - parade-ps8640: fix suspend of bridge, aux fixes
   - samsung-dsim: avoid using FORCE_STOP_STATE

  panel:
   - simple add missing bus flags
   - fix samsung-s6d7aa0 flags

  amdgpu:
   - AC/DC power supply tracking fix
   - Don't show invalid vram vendor data
   - SMU 13.0.x fixes
   - GART fix for umr on systems without VRAM
   - GFX 10/11 UNORD_DISPATCH fixes
   - IPS display fixes (required for S0ix on some platforms)
   - Misc fixes

  i915:
   - DSI sequence revert to fix GitLab #10071 and DP test-pattern fix
   - Drop -Wstringop-overflow (broken on GCC11)

  ivpu:
   - fix recovery/reset support
   - improve submit ioctl stability
   - fix dev open/close races on unbind
   - PLL disable reset fix
   - deprecate context priority param
   - improve debug buffer logging
   - disable buffer sharing across VPU contexts
   - free buffer sgt on unbind
   - fix missing lock around shmem vmap
   - add better boot diagnostics
   - add more debug prints around mapping
   - dump MMU events in case of timeout

  v3d:
   - NULL ptr dereference fix

  exynos:
   - fix stack usage
   - fix incorrect type
   - fix dt typo
   - fix gsc runtime resume

  xe:
   - Make an ops struct static
   - Fix an implicit 0 to NULL conversion
   - A couple of 32-bit fixes
   - A migration coherency fix for Lunar Lake.
   - An error path vm id leak fix
   - Remove PVC references in kunit tests"

* tag 'drm-fixes-2024-01-27' of git://anongit.freedesktop.org/drm/drm: (66 commits)
  Revert "nouveau: push event block/allowing out of the fence context"
  drm: bridge: samsung-dsim: Don't use FORCE_STOP_STATE
  drm/sched: Drain all entities in DRM sched run job worker
  drm/amd/display: "Enable IPS by default"
  drm/amd: Add a DC debug mask for IPS
  drm/amd/display: Disable ips before dc interrupt setting
  drm/amd/display: Replay + IPS + ABM in Full Screen VPB
  drm/amd/display: Add IPS checks before dcn register access
  drm/amd/display: Add Replay IPS register for DMUB command table
  drm/amd/display: Allow IPS2 during Replay
  drm/amdgpu/gfx11: set UNORD_DISPATCH in compute MQDs
  drm/amdgpu/gfx10: set UNORD_DISPATCH in compute MQDs
  drm/amd/amdgpu: Assign GART pages to AMD device mapping
  drm/amd/pm: Fetch current power limit from FW
  drm/amdgpu: Fix null pointer dereference
  drm/amdgpu: Show vram vendor only if available
  drm/amd/pm: update the power cap setting
  drm/amdgpu: Avoid fetching vram vendor information
  drm/amdgpu/pm: Fix the power source flag error
  drm/amd/display: Fix uninitialized variable usage in core_link_ 'read_dpcd() & write_dpcd()' functions
  ...
2024-01-26 13:52:18 -08:00
Linus Torvalds
2047b0b275 asm-generic updates for 6.8, part 2
Just one patch this time, adding Andreas Larsson as co-maintainer
 for arch/sparc. He is volunteering to help since David Miller
 has become much less active over the past few years.
 
 In turn, I'm helping Andreas get set up as a new maintainer,
 starting with the entry in the MAINTAINERS file.
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Merge tag 'asm-generic-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic update from Arnd Bergmann:
 "Just one patch this time, adding Andreas Larsson as co-maintainer for
  arch/sparc. He is volunteering to help since David Miller has become
  much less active over the past few years.

  In turn, I'm helping Andreas get set up as a new maintainer, starting
  with the entry in the MAINTAINERS file"

* tag 'asm-generic-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  MAINTAINERS: Add Andreas Larsson as co-maintainer for arch/sparc
2024-01-26 13:22:59 -08:00