[Backport ncs-v3.1-branch] [nrf fromtree] Bluetooth: Mesh: Blob Server considers friendship #3140
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Fix Max Chunk reporting during Block_Information_Get:
If friendship is established, then max possible chunk size for transfer
is reported according to friend's queue size.
ChunkSize = (FndQ sz * Bytes per seg (12)) - Opcode(1) - Chunk_Num (2)-
8 byte MIC (max)
= (FndQ sz * 12) - 11
This allows all segments of Chunk_Transfer messages to fit in a friend
queue. If this is not done, friend queue keeps overflowing
systematically causing unstable PULL_MODE transfers.
Fix Chunk requests:
Adapt number of requested chunks according to current friend queue size.
If friend queue is too small, at least 1 chunk is requested.
Signed-off-by: Omkar Kulkarni <[email protected]>
(cherry picked from commit 602fd0d)
(cherry picked from commit 1ed3c0d)
alxelax
approved these changes
Aug 4, 2025
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Backport 1ed3c0d from #3124.