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download PDF document: tsec.4.pdf

TSEC(4) FreeBSD Kernel Interfaces Manual TSEC(4)
NAME tsec - Freescale Three-Speed Ethernet Controller device driver
SYNOPSIS To compile this driver into the kernel, place the following lines in your kernel configuration file:
device tsec device miibus
DESCRIPTION The tsec driver provides support for the gigabit Ethernet controller integrated in some of the Freescale system-on-chip devices.
The tsec driver supports the following media types:
autoselect Enable autoselection of the media type and options
10baseT/UTP Set 10Mbps operation
100baseTX Set 100Mbps operation
1000baseT Set 1000baseT operation
The tsec driver supports the following media options:
full-duplex Set full duplex operation
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.
The enhanced version of the controller (eTSEC), integrated in the following devices, is also supported by this driver:
o MPC8548, MPC8572
SEE ALSO altq(4), arp(4), miibus(4), netintro(4), ng_ether(4), polling(4), vlan(4), ifconfig(8)
HISTORY The tsec device driver first appeared in FreeBSD 8.0.
AUTHORS The base version of tsec device driver was written by Piotr Kruszynski. It has been extended with polling and interrupt coalescing support by Rafal Jaworowski. It has been further enhanced with multicast, h/w checksum calculation and vlan support by Piotr Ziecik. This manual page was written by Rafal Jaworowski.
FreeBSD 14.0-RELEASE-p11 February 20, 2015 FreeBSD 14.0-RELEASE-p11