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Make is_flat_memory more robust #491

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merged 2 commits into from
Sep 3, 2024

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Junchao-Mellanox
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Description

Currently, is_flat_memory could return 3 different values:

  • True when the module is flat memory
  • False when the module is not flat memory
  • None when the EEPROM read returns None or empty bytearray

When it returns None, we should not assume that the module is NOT a flat memory. Instead, it would be safer to treat it as a flat memory.

Motivation and Context

This PR is to make is_flat_memory only returns two state, True or False. And if EEPROM reading returns None or empty bytearray, we should treat the module as a flat memory.

How Has This Been Tested?

Manual test

Additional Information (Optional)

@mihirpat1
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@Junchao-Mellanox Can you please modify the below description as well?

A Boolean, True if flat memory, False if paging is implemented
If there is an issue with reading the xcvr, None should be returned.

keboliu
keboliu previously approved these changes Aug 19, 2024
@liat-grozovik liat-grozovik merged commit 309a5fb into sonic-net:master Sep 3, 2024
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mssonicbld pushed a commit to mssonicbld/sonic-platform-common that referenced this pull request Sep 11, 2024
- Description
Currently, is_flat_memory could return 3 different values:

True when the module is flat memory
False when the module is not flat memory
None when the EEPROM read returns None or empty bytearray
When it returns None, we should not assume that the module is NOT a flat memory. Instead, it would be safer to treat it as a flat memory.

- Motivation and Context
This PR is to make is_flat_memory only returns two state, True or False. And if EEPROM reading returns None or empty bytearray, we should treat the module as a flat memory.

- How Has This Been Tested?
Manual test
@mssonicbld
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Cherry-pick PR to 202405: #497

mssonicbld pushed a commit that referenced this pull request Sep 11, 2024
- Description
Currently, is_flat_memory could return 3 different values:

True when the module is flat memory
False when the module is not flat memory
None when the EEPROM read returns None or empty bytearray
When it returns None, we should not assume that the module is NOT a flat memory. Instead, it would be safer to treat it as a flat memory.

- Motivation and Context
This PR is to make is_flat_memory only returns two state, True or False. And if EEPROM reading returns None or empty bytearray, we should treat the module as a flat memory.

- How Has This Been Tested?
Manual test
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6 participants