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eth: fbnic: Create ring buffer for firmware logs

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When enabled, firmware may send logs messages which are specific to the
device and not the host. Create a ring buffer to store these messages
which are read by a user through DebugFS. Buffer access is protected by
a spinlock.

Signed-off-by: Lee Trager <lee@trager.us>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20250702192207.697368-4-lee@trager.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lee Trager 2025-07-02 12:12:09 -07:00 • committed by Jakub Kicinski
commit c2b93d6bec
4 changed files with 142 additions and 0 deletions
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