matthew/sonic-buildimage
Archived
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add hw-mgmt patch to support SDK OFFLINE event for handling flow within service firmware upgrade (#6550)

Browse Source 
During ISSU, "mlxsw_minimal" driver still trying to access firmware, in some cases FW could return some wrong critical threshold value which will cause switch shutdown.

**- How I did it**
In order to prevent "mlxsw_minimal" driver from accessing ASIC during ISSU, SDK will raise "OFFLINE" 'udev' event
at the early beginning of such flow. When this event is received, hw-management will remove "mlxsw_minimal" driver.
There is no need to implement the opposite "ONLINE" event since this flow is ended up with "kexec".

**- How to verify it**
repeatedly perform warm reboot, make sure there is no switch shutdown occurred.
This commit is contained in:
Kebo Liu 2021-01-27 21:39:54 +08:00 committed by Guohan Lu
parent be281536e1
commit 3706b31b49
1 changed files with 30 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
platform/mellanox/hw-management/0002-hw-mgmt-events-Add-support-for-SDK-OFFLINE-event-for.patch Normal file
View File

@ -0,0 +1,30 @@
From 3e511778248403968e0a02857b7003f352669ba3 Mon Sep 17 00:00:00 2001
From: Vadim Pasternak <vadimp@nvidia.com>
Date: Wed, 13 Jan 2021 13:19:17 +0200
Subject: [PATCH] hw-mgmt: events: Add support for SDK OFFLINE event for
handling flow with in service firmware upgrade
In order to prevent "mlxsw_minimal" driver access to ASIC during in
service firmware upgrade flow, SDK will raise "OFFLINE" 'udev' event
at early beginning of such flow. When this event is received,
hw-managemnet will remove "mlxsw_minimal" driver.
There is no need to implement opposite "ONLINE" event, since this flow
is ended up with "kexec".
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
---
usr/lib/udev/rules.d/50-hw-management-events.rules | 1 +
1 file changed, 1 insertion(+)
diff --git a/usr/lib/udev/rules.d/50-hw-management-events.rules b/usr/lib/udev/rules.d/50-hw-management-events.rules
index cf4219e..33ea1bc 100644
--- a/usr/lib/udev/rules.d/50-hw-management-events.rules
+++ b/usr/lib/udev/rules.d/50-hw-management-events.rules
@@ -269,3 +269,4 @@ SUBSYSTEM=="i2c", DEVPATH=="/devices/platform/mlxplat/i2c_mlxcpld*/i2c-*/i2c-*/*
# SDK
SUBSYSTEM=="pci", DRIVERS=="sx_core", ACTION=="add", RUN+="/usr/bin/hw-management-thermal-events.sh add sxcore add"
SUBSYSTEM=="pci", DRIVERS=="sx_core", ACTION=="remove", RUN+="/usr/bin/hw-management-thermal-events.sh rm sxcore remove"
+SUBSYSTEM=="pci", DRIVERS=="sx_core", ACTION=="offline", RUN+="/usr/bin/hw-management-thermal-events.sh rm sxcore remove"
--
1.9.1