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Vladimir Oltean bdf366bd86 net/sched: taprio: don't allow dynamic max_sdu to go negative after stab adjustment
The overhead specified in the size table comes from the user. With small
time intervals (or gates always closed), the overhead can be larger than
the max interval for that traffic class, and their difference is
negative.

What we want to happen is for max_sdu_dynamic to have the smallest
non-zero value possible (1) which means that all packets on that traffic
class are dropped on enqueue. However, since max_sdu_dynamic is u32, a
negative is represented as a large value and oversized dropping never
happens.

Use max_t with int to force a truncation of max_frm_len to no smaller
than dev->hard_header_len + 1, which in turn makes max_sdu_dynamic no
smaller than 1.

Fixes: fed87cc671 ("net/sched: taprio: automatically calculate queueMaxSDU based on TC gate durations")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
History 2023-02-20 08:46:57 +01:00
arch Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2023-02-17 11:06:39 +00:00
block block-6.2-2023-02-03 2023-02-03 11:35:42 -08:00
certs certs: Fix build error when PKCS#11 URI contains semicolon 2023-01-31 17:53:01 +09:00
crypto wifi: cfg80211: Deduplicate certificate loading 2023-01-19 14:46:45 +01:00
Documentation Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2023-02-17 11:06:39 +00:00
drivers net: ipa: add HW_PARAM_4 GSI register 2023-02-20 08:14:20 +01:00
fs Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2023-02-17 11:06:39 +00:00
include rxrpc: Fix overproduction of wakeups to recvmsg() 2023-02-20 08:33:25 +01:00
init bpf-next-for-netdev 2023-01-28 00:00:14 -08:00
io_uring io_uring: always prep_async for drain requests 2023-01-27 06:29:29 -07:00
ipc Non-MM patches for 6.2-rc1. 2022-12-12 17:28:58 -08:00
kernel Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2023-02-17 11:06:39 +00:00
lib Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2023-02-17 11:06:39 +00:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm 12 hotfixes, mostly against mm/. Five of these fixes are cc:stable. 2023-02-13 14:09:20 -08:00
net net/sched: taprio: don't allow dynamic max_sdu to go negative after stab adjustment 2023-02-20 08:46:57 +01:00
rust rust: print: avoid evaluating arguments in pr_* macros in unsafe blocks 2023-01-16 00:54:35 +01:00
samples bpf-next-for-netdev 2023-02-10 17:51:27 -08:00
scripts Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2023-02-17 11:06:39 +00:00
security apparmor: Fix regression in compat permissions for getattr 2023-02-15 11:24:38 -08:00
sound sound fixes for 6.2-rc8 2023-02-10 08:37:48 -08:00
tools Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2023-02-17 11:06:39 +00:00
usr usr/gen_init_cpio.c: remove unnecessary -1 values from int file 2022-10-03 14:21:44 -07:00
virt VFIO fixes for v6.2-rc6 2023-01-23 11:56:07 -08:00
.clang-format iommufd for 6.2 2022-12-14 09:15:43 -08:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore *.rpm 2022-12-30 17:22:14 +09:00
.mailmap 12 hotfixes, mostly against mm/. Five of these fixes are cc:stable. 2023-02-13 14:09:20 -08:00
.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: update SCTP maintainers 2023-02-02 11:35:33 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2023-02-17 11:06:39 +00:00
Makefile Linux 6.2-rc8 2023-02-12 14:10:17 -08:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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 Restructured Text 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.