Manual Pages  — TSEC

The tsec driver supports polled operation when the system is configured with DEVICE_POLLING kernel option, see polling(4) for more details.

The tsec driver supports reception and transmission of extended frames for vlan(4). This capability of tsec can be controlled by means of the vlanmtu parameter to ifconfig(8).

The tsec driver supports interrupts coalescing (IC) so that raising a transmit/receive frame interrupt is delayed, if possible, until a threshold-defined period of time has elapsed, or a threshold-defined frame counter has been reached (whichever occurs first). The following sysctls regulate this behaviour:

dev.tsec.X.int_coal.rx_time dev.tsec.X.int_coal.rx_count dev.tsec.X.int_coal.tx_time dev.tsec.X.int_coal.tx_count
	Value of 0 for either time or count disables IC on the given path. Time value 1-65535 corresponds to a real time period and is expressed in units equivalent to 64 ticks of the TSEC clock. Count 1-255 represents the number of frames (note that value of 1 is equivalent to IC disabled). User provided values larger than supported will be trimmed to the maximum supported. More details are available in the reference manual of the device.