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Jacob Keller eeae2526e8 Revert "ixgbe: Manual AN-37 for troublesome link partners for X550 SFI" [ Upstream commit `b35b1c0b4e` ] This reverts commit `565736048b`. According to the commit, it implements a manual AN-37 for some "troublesome" Juniper MX5 switches. This appears to be a workaround for a particular switch. It has been reported that this causes a severe breakage for other switches, including a Cisco 3560CX-12PD-S. The code appears to be a workaround for a specific switch which fails to link in SFI mode. It expects to see AN-37 auto negotiation in order to link. The Cisco switch is not expecting AN-37 auto negotiation. When the device starts the manual AN-37, the Cisco switch decides that the port is confused and stops attempting to link with it. This persists until a power cycle. A simple driver unload and reload does not resolve the issue, even if loading with a version of the driver which lacks this workaround. The authors of the workaround commit have not responded with clarifications, and the result of the workaround is complete failure to connect with other switches. This appears to be a case where the driver can either "correctly" link with the Juniper MX5 switch, at the cost of bricking the link with the Cisco switch, or it can behave properly for the Cisco switch, but fail to link with the Junipir MX5 switch. I do not know enough about the standards involved to clearly determine whether either switch is at fault or behaving incorrectly. Nor do I know whether there exists some alternative fix which corrects behavior with both switches. Revert the workaround for the Juniper switch. Fixes: `565736048b` ("ixgbe: Manual AN-37 for troublesome link partners for X550 SFI") Link: https://lore.kernel.org/netdev/cbe874db-9ac9-42b8-afa0-88ea910e1e99@intel.com/T/ Link: https://forum.proxmox.com/threads/intel-x553-sfp-ixgbe-no-go-on-pve8.135129/#post-612291 Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Cc: Jeff Daly <jeffd@silicom-usa.com> Cc: kernel.org-fo5k2w@ycharbi.fr Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/20240520-net-2024-05-20-revert-silicom-switch-workaround-v1-1-50f80f261c94@intel.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-06-12 11:03:52 +02:00
arch	riscv: stacktrace: fixed walk_stackframe()	2024-06-12 11:03:52 +02:00
block	block: support to account io_ticks precisely	2024-06-12 11:03:07 +02:00
certs	certs: Fix build error when PKCS#11 URI contains semicolon	2023-02-09 11:28:11 +01:00
crypto	KEYS: asymmetric: Add missing dependencies of FIPS_SIGNATURE_SELFTEST	2024-06-12 11:02:58 +02:00
Documentation	dt-bindings: pinctrl: mediatek: mt7622: fix array properties	2024-06-12 11:03:39 +02:00
drivers	Revert "ixgbe: Manual AN-37 for troublesome link partners for X550 SFI"	2024-06-12 11:03:52 +02:00
fs	pNFS/filelayout: fixup pNfs allocation modes	2024-06-12 11:03:51 +02:00
include	media: cec: core: avoid recursive cec_claim_log_addrs	2024-06-12 11:03:48 +02:00
init	rust: make mutually exclusive with CFI_CLANG	2024-05-02 16:29:27 +02:00
io_uring	io_uring: use the right type for work_llist empty check	2024-06-12 11:03:05 +02:00
ipc	ipc: fix memory leak in init_mqueue_fs()	2022-12-31 13:32:01 +01:00
kernel	rv: Update rv_en(dis)able_monitor doc to match kernel-doc	2024-06-12 11:03:52 +02:00
lib	lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure	2024-06-12 11:03:29 +02:00
LICENSES
mm	mm/hugetlb: fix DEBUG_LOCKS_WARN_ON(1) when dissolve_free_hugetlb_folio()	2024-05-17 11:56:24 +02:00
net	openvswitch: Set the skbuff pkt_type for proper pmtud support.	2024-06-12 11:03:51 +02:00
rust	rust: macros: fix soundness issue in `module!` macro	2024-05-17 11:56:17 +02:00
samples	work around gcc bugs with 'asm goto' with outputs	2024-02-23 09:12:28 +01:00
scripts	btf, scripts: rust: drop is_rust_module.sh	2024-05-17 11:56:17 +02:00
security	KEYS: trusted: Do not use WARN when encode fails	2024-05-25 16:21:35 +02:00
sound	ASoC: tas2552: Add TX path for capturing AUDIO-OUT data	2024-06-12 11:03:50 +02:00
tools	selftests: net: kill smcrouted in the cleanup logic in amt.sh	2024-06-12 11:03:50 +02:00
usr	usr/gen_init_cpio.c: remove unnecessary -1 values from int file	2022-10-03 14:21:44 -07:00
virt	KVM: Always flush async #PF workqueue when vCPU is being destroyed	2024-04-03 15:19:25 +02:00
.clang-format	inet: ping: use hlist_nulls rcu iterator during lookup	2022-12-01 12:42:46 +01:00
.cocciconfig
.get_maintainer.ignore	get_maintainer: add Alan to .get_maintainer.ignore	2022-08-20 15:17:44 -07:00
.gitattributes
.gitignore	Kbuild: add Rust support	2022-09-28 09:02:20 +02:00
.mailmap	9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address	2022-12-10 17:10:52 -08:00
.rustfmt.toml	rust: add `.rustfmt.toml`	2022-09-28 09:02:20 +02:00
COPYING
CREDITS	MAINTAINERS: Remove Michal Marek from Kbuild maintainers	2022-11-16 14:53:00 +09:00
Kbuild	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00
Kconfig
MAINTAINERS	MAINTAINERS: add leah to 6.1 MAINTAINERS file	2024-05-17 11:56:16 +02:00
Makefile	Linux 6.1.92	2024-05-25 16:21:36 +02:00
README

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 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.