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Bluetooth: ATT: Internalize ATT PDU TX pool

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Why?
- metadata is easier to manage as an array + index
  - less error-prone -> less memory-management bugs
- we can. because of the previous refactor
- PDU allocations are more predictable
- ATT buffer size can be optimized by app
- isolates ATT from the rest of the ACL users
  - decouples ATT PDU size from e.g. SMP w/ LESC

Drawbacks:
- higher memory usage
- kconfig change

The higher memory use is only temporary, as this will be followed-up
with more refactors that should bring it back down.

Signed-off-by: Jonathan Rico <jonathan.rico@nordicsemi.no>
Co-authored-by: Aleksander Wasaznik <aleksander.wasaznik@nordicsemi.no>
This commit is contained in:
Jonathan Rico 2023-11-29 15:17:17 +01:00 • committed by Johan Hedberg
commit a05a47573a
10 changed files with 66 additions and 95 deletions
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2
samples/bluetooth/tmap_bmr/prj.conf
View file

@ -8,7 +8,7 @@ CONFIG_UTF8=y
CONFIG_BT_SMP=y
CONFIG_BT_KEYS_OVERWRITE_OLDEST=y
CONFIG_BT_L2CAP_TX_BUF_COUNT=20
CONFIG_BT_ATT_TX_COUNT=20
# TMAP support
CONFIG_BT_TMAP=y

2
samples/bluetooth/tmap_peripheral/prj.conf
View file

@ -7,7 +7,7 @@ CONFIG_UTF8=y
CONFIG_BT_SMP=y
CONFIG_BT_KEYS_OVERWRITE_OLDEST=y
CONFIG_BT_L2CAP_TX_BUF_COUNT=20
CONFIG_BT_ATT_TX_COUNT=20
# TMAP support
CONFIG_BT_TMAP=y