How to determine the length of received data in a GATT callback

[James Howarth]

Hi,

Looking at the peripheral callback gatt_svr_chr_access_gatt, is there a way
to determine the length of data received?

Here's the whole function definition.

static int
gatt_svr_chr_access_gatt(uint16_t conn_handle, uint16_t attr_handle,
uint8_t op,
                         union ble_gatt_access_ctxt *ctxt, void *arg)

Cheers
James