RE(4) | Device Drivers Manual | RE(4) |
re
—
re* at pci? dev ? function ?
re* at cardbus? function ?
re
driver provides support for various NICs based on
the RealTek RTL8139C+, RTL8169, RTL8169S, RTL8168, and RTL8110S PCI/Cardbus
Ethernet controllers, including the following:
NICs based on the 8139C+ are capable of 10 and 100Mbps speeds over CAT5 cable. NICs based on the 8169, 8169S, 8168, and 8110S are capable of 10, 100, and 1000Mbps operation.
All NICs supported by the re
driver have
IP/TCP/UDP checksum offload and hardware VLAN tagging/insertion features,
and use a descriptor-based DMA mechanism. They are also capable of TCP large
send (TCP segmentation offload).
The 8139C+ is a single-chip solution combining both a 10/100 MAC and PHY, and its PHY is supported by rlphy(4). The 8169 is a 10/100/1000 MAC only, requiring a GMII or TBI external PHY and some 8169 based boards have Marvell 88E1000 PHY supported by makphy(4). The 8169S and 8110S are single-chip devices containing both a 10/100/1000 MAC and 10/100/1000 copper PHY, which is supported by rgephy(4). Standalone 10/100/1000 cards are available in both 32-bit PCI and 64-bit PCI models. The 8110S is designed for embedded LAN-on-motherboard applications.
The 8169, 8169S, and 8110S also support jumbo frames, which can be configured via the interface MTU setting. Selecting an MTU larger than 1500 bytes with the ifconfig(8) utility configures the adapter to receive and transmit jumbo frames.
The re
driver supports the following media
types:
autoselect
10baseT/UTP
mediaopt
option can also be used to select either
full-duplex
or half-duplex
modes.100baseTX
mediaopt
option can also be used to select either
full-duplex
or half-duplex
modes.1000baseTX
full-duplex
mode only.The re
driver supports the following media
options:
full-duplex
half-duplex
For more information on configuring this device, see ifconfig(8).
RealTek Semiconductor RTL8139C+, RTL8169, RTL8169S, and RTL8110S datasheets, http://www.realtek.com.tw.
re
device driver first appeared in
FreeBSD 5.2 and was ported to NetBSD
2.0.
re
driver was written by Bill
Paul
<wpaul@windriver.com>.
Unfortunately, it is not possible to correct this problem in
software, however it is possible to detect it. When the
re
driver is loaded, it will run a diagnostic
routine designed to validate DMA operation by placing the chip in digital
loopback mode and initiating a packet transmission. If the card functions
properly, the transmitted data will be echoed back unmodified. If the echoed
data is corrupt, the driver will print an error message on the console and
abort the device attach. The user should ensure the NIC is installed in a
32-bit PCI slot to avoid this problem.
The RealTek 8169, 8169S, and 8110S chips appear to only be capable of transmitting jumbo frames up to 7.5K in size.
November 18, 2019 | NetBSD 9.4 |