Getting "RPL is full" and "No free slots for new incoming segmented messages"

[98918atul]

Hello,

I'm using "Bluetooth Mesh Light switch" code which i have modified to act as a gateway. Where it periodically collects data from lights. After receiving data from some lights it start showing error message in logs like "RPL is full" , "No free slots for new incoming segmented messages" and  "Not enough segments for incoming message". What went wrong here and how to avoid these error messages.

CONFIG_BT_MESH=y

CONFIG_BT_MESH_RELAY=y

CONFIG_BT_MESH_FRIEND=y

CONFIG_BT_MESH_ADV_BUF_COUNT=64

CONFIG_BT_MESH_TX_SEG_MAX=32

CONFIG_BT_MESH_PB_GATT=y

CONFIG_BT_MESH_GATT_PROXY=y

CONFIG_BT_MESH_PROXY_USE_DEVICE_NAME=y

CONFIG_BT_MESH_DK_PROV=y

CONFIG_BT_MESH_SUBNET_COUNT=2

CONFIG_BT_MESH_APP_KEY_COUNT=3

CONFIG_BT_MESH_CRPL=64

CONFIG_BT_MESH_MSG_CACHE_SIZE=64

CONFIG_BT_MESH_RELAY_BUF_COUNT=256

CONFIG_BT_MESH_RX_SEG_MSG_COUNT=5

these are Ble mesh configuration 

[Priyanka]

Hi Atul,

CONFIG_BT_MESH_CRPL=64

Could you maybe try to increase this value to say, 128 or 256 (if it abides with your memory). Maybe increasing the RPL size can remove the "RPL is full" error message.

You could also try to increase CONFIG_BT_MESH_RX_SEG_MSG_COUNT to a higher value, (10 or 15). Hence there will be more buffer slots for handling segmented messages. Please also then increase CONFIG_BT_MESH_ADV_BUF_COUNT, as these buffers are used for advertising packets.

CONFIG_BT_MESH_TX_SEG_MAX=32

Increasing this value also to something higher (40.50.etc) might help.

Do try these and tell me how it goes.

Regards,

Priyanka

[98918atul]

Hiii,,

But for the CONFIG_BT_MESH_TX_SEG_MAX range is from 0 to 32 only.

Thank you 

Atul

[Priyanka]

Hi Atul,

Sorry for the confusion. Were you able to try out the other suggestions?

-Priyanka

[98918atul]

Hi priyanka

Any support from your side??

[Priyanka]

Hi Atul,

As mentioned earlier, raising the values of certain Configs might help you.

Regarding the error messages:

No free slots for new incoming segmented messages

Please try increasing the count for the following configs accordingly,

CONFIG_BT_MESH_RX_SEG_MSG_COUNT: https://docs.nordicsemi.com/bundle/ncs-latest/page/kconfig/index.html#CONFIG_BT_MESH_RX_SEG_MSG_COUNT
CONFIG_BT_MESH_SEG_BUFS: https://docs.nordicsemi.com/bundle/ncs-latest/page/kconfig/index.html#CONFIG_BT_MESH_SEG_BUFS

"Not enough segments for incoming message

CONFIG_BT_MESH_RX_SEG_MAX: https://docs.nordicsemi.com/bundle/ncs-latest/page/kconfig/index.html#CONFIG_BT_MESH_RX_SEG_MAX

"RPL is full

Here, as mentioned previously, Capacity is set through CONFIG_BT_MESH_CRPL: https://docs.nordicsemi.com/bundle/ncs-latest/page/kconfig/index.html#CONFIG_BT_MESH_CRPL and I would advise you to please try increasing the capacity first and maybe at some point I guess you might need external storage. If there is no space for a new entry in RPL, then the message will be discarded. This may happen the first time the node receives a message from a given address. (When the receiving device has already gotten messages from the same address previously, then that same entry is updated. Therefore this happens only on new sender addresses.)

-Priyanka