tests/bluetooth/bsim_bt/bsim_test_l2cap_stress/prj.conf

CONFIG_BT=y
CONFIG_BT_CENTRAL=y
CONFIG_BT_PERIPHERAL=y
CONFIG_BT_DEVICE_NAME="L2CAP stress test"

CONFIG_BT_EATT=n
CONFIG_BT_L2CAP_ECRED=n

CONFIG_BT_SMP=y # Next config depends on it
CONFIG_BT_L2CAP_DYNAMIC_CHANNEL=y

# Disable auto-initiated procedures so they don't
# mess with the test's execution.
CONFIG_BT_AUTO_PHY_UPDATE=n
CONFIG_BT_AUTO_DATA_LEN_UPDATE=n
CONFIG_BT_GAP_AUTO_UPDATE_CONN_PARAMS=n

# L2CAP MPS
# 23+27+27=77 makes exactly three full packets
CONFIG_BT_L2CAP_TX_MTU=77
CONFIG_BT_BUF_ACL_TX_SIZE=77
CONFIG_BT_BUF_ACL_TX_COUNT=4

# The minimum value for this is
# L2AP MPS + L2CAP header (4)
CONFIG_BT_BUF_ACL_RX_SIZE=81

# Governs BT_CONN_TX_MAX, and so must be >= than the max number of
# peers, since we attempt to send one SDU per peer. The test execution
# is a bit slowed down by having this at the very minimum, but we want
# to keep it that way as to stress the stack as much as possible.
CONFIG_BT_L2CAP_TX_BUF_COUNT=6

CONFIG_BT_CTLR_RX_BUFFERS=10
# The ring buffer now has space for three times as much data
# (default 27, 3*27=81), so that it does not run out of data
# while waiting for new SDUs to be queued.
CONFIG_BT_CTLR_DATA_LENGTH_MAX=81

CONFIG_BT_MAX_CONN=10

CONFIG_LOG=y
CONFIG_ASSERT=y
CONFIG_BT_DEBUG_LOG=y