DGE(4) | NetBSD Kernel Interfaces Manual | DGE(4) |
The i82597EX supports IPv4/TCP/UDP checksumming in hardware, as well as TCP Segmentation Offloading (TSO). The driver does currently only support the hardware checksumming features. See ifconfig(8) for information on how to enable the hardware checksum calculations.
The driver also makes use of the ifconfig(8) link flags link0 and link1 to set the PCIX burst size. The burst size is set according to this table:
link0 | link1 | burst size |
off | off | 512 |
on | off | 1024 |
off | on | 2048 |
on | on | 4096 |
A larger burst size will increase the transmit capacity of the card dramatically but may have negative effect on other devices in the system.
March 18, 2004 | NetBSD 5.99 |