Signed-off-by: Sudharsan Dhamal Gopalarathnam sudharsand@nvidia.com
Why I did it
During the system boot up when 'show platform status' or 'show version' command is executed before STATE_DB CHASSIS_INFO table is populated, the show will try to fallback to use the platform API. The DMI file in mellanox platforms require root permission for access. So if the show commands are executed as admin or any other user, the following error log will appear in the syslog
Jun 28 17:21:25.612123 sonic ERR show: Fail to decode DMI /sys/firmware/dmi/entries/2-0/raw due to PermissionError(13, 'Permission denied')
How I did it
Check the file permission before accessing it.
How to verify it
Added UT to verify. Manually verified if the error log is not thrown.
- Why I did it
Refactor SFP code to remove code duplication and to be able to use the latest features available in new APIs.
- How I did it
Refactor SFP code to remove code duplication and to be able to use the latest features available in new APIs.
- How to verify it
Run sonic-mgmt/platform_tests/sfp tests
- Why I did it
* To support systems with dynamic port configuration
* Apply lazy initialization to faster the speed of loading platform API
- How I did it
* Add module.py to implement dynamic port configuration (aka line card model)
* Adjust chassis.py, platform.py, thermal.py, sfp.py to support dynamic port configuration
* Optimize existing code
- How to verify it
Platform regression on MSN4700, MSN3800 and MSN2700, 100% pass
Unit test covers all new changes.
