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Ioana Ciornei 2690cb0895 dpaa2-switch: fix buffer pool seeding for control traffic 
Starting with commit c50e747596 ("dpaa2-switch: Fix error checking in
dpaa2_switch_seed_bp()"), the probing of a second DPSW object errors out
like below.

fsl_dpaa2_switch dpsw.1: fsl_mc_driver_probe failed: -12
fsl_dpaa2_switch dpsw.1: probe with driver fsl_dpaa2_switch failed with error -12

The aforementioned commit brought to the surface the fact that seeding
buffers into the buffer pool destined for control traffic is not
successful and an access violation recoverable error can be seen in the
MC firmware log:

[E, qbman_rec_isr:391, QBMAN]  QBMAN recoverable event 0x1000000

This happens because the driver incorrectly used the ID of the DPBP
object instead of the hardware buffer pool ID when trying to release
buffers into it.

This is because any DPSW object uses two buffer pools, one managed by
the Linux driver and destined for control traffic packet buffers and the
other one managed by the MC firmware and destined only for offloaded
traffic. And since the buffer pool managed by the MC firmware does not
have an external facing DPBP equivalent, any subsequent DPBP objects
created after the first DPSW will have a DPBP id different to the
underlying hardware buffer ID.

The issue was not caught earlier because these two numbers can be
identical when all DPBP objects are created before the DPSW objects are.
This is the case when the DPL file is used to describe the entire DPAA2
object layout and objects are created at boot time and it's also true
for the first DPSW being created dynamically using ls-addsw.

Fix this by using the buffer pool ID instead of the DPBP id when
releasing buffers into the pool.

Fixes: 2877e4f7e1 ("staging: dpaa2-switch: setup buffer pool and RX path rings")
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Link: https://patch.msgid.link/20250910144825.2416019-1-ioana.ciornei@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-11 18:51:25 -07:00
arch s390 fixes for 6.17-rc6 2025-09-11 08:46:30 -07:00
block vfs-6.17-rc6.fixes 2025-09-08 07:53:01 -07:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: sha512 - Implement export_core() and import_core() 2025-09-02 19:02:39 -07:00
Documentation Including fixes from CAN, netfilter and wireless. 2025-09-11 08:54:42 -07:00
drivers dpaa2-switch: fix buffer pool seeding for control traffic 2025-09-11 18:51:25 -07:00
fs for-6.17-rc5-tag 2025-09-11 08:01:18 -07:00
include Including fixes from CAN, netfilter and wireless. 2025-09-11 08:54:42 -07:00
init 20 hotfixes. 15 are cc:stable and the remainder address post-6.16 issues 2025-09-10 21:19:34 -07:00
io_uring vfs-6.17-rc6.fixes 2025-09-08 07:53:01 -07:00
ipc vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
kernel Power management fixes for 6.17-rc6 2025-09-11 08:11:16 -07:00
lib hardening fixes for v6.17-rc4 2025-08-31 08:56:45 -07:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
mm 20 hotfixes. 15 are cc:stable and the remainder address post-6.16 issues 2025-09-10 21:19:34 -07:00
net net: Use NAPI_* in test_bit when stopping napi kthread 2025-09-11 17:52:42 -07:00
rust Rust fixes for v6.17 (2nd) 2025-09-06 12:33:09 -07:00
samples ftrace/samples: Fix function size computation 2025-09-05 18:39:12 -04:00
scripts Rust fixes for v6.17 (2nd) 2025-09-06 12:33:09 -07:00
security + Features 2025-08-04 08:17:28 -07:00
sound ALSA: hda/hdmi: Add pin fix for another HP EliteDesk 800 G4 model 2025-09-01 13:51:57 +02:00
tools Including fixes from CAN, netfilter and wireless. 2025-09-11 08:54:42 -07:00
usr usr/include: openrisc: don't HDRTEST bpf_perf_event.h 2025-05-12 15:03:17 +09:00
virt Merge tag 'kvm-x86-no_assignment-6.17' of https://github.com/kvm-x86/linux into HEAD 2025-07-29 08:36:42 -04:00
.clang-format Linux 6.15-rc5 2025-05-06 16:39:25 +10:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: Retire Ralf Baechle 2024-11-12 15:48:59 +01:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore gitignore: allow .pylintrc to be tracked 2025-07-02 17:10:04 -06:00
.mailmap MAINTAINERS: Update Nobuhiro Iwamatsu's email address 2025-09-01 10:36:10 +02:00
.pylintrc docs: add a .pylintrc file with sys path for docs scripts 2025-04-09 12:10:33 -06:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: retire Boris from TLS maintainers 2025-08-26 17:36:01 -07:00
Kbuild drm: ensure drm headers are self-contained and pass kernel-doc 2025-02-12 10:44:43 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS Including fixes from CAN, netfilter and wireless. 2025-09-11 08:54:42 -07:00
Makefile Linux 6.17-rc5 2025-09-07 14:22:57 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.