Pci Bus Interface Parameters; Table 4-9 Pci Bus Interface Parameters - Sun Microsystems GigaSwift Ethernet Adapter Installation And User Manual

TABLE 4-8
Field Name
red_dv6to8k
red_dv8to10k
red_dv10to12k

PCI Bus Interface Parameters

These parameters allow you to modify PCI interface features to gain better PCI
interperformance for a given application.
TABLE 4-9
Parameter
tx_dma_weight
44 Sun GigaSwift Ethernet Adapter Installation and User's Guide • August 2004
RX Random Early Detecting 8-Bit Vectors
Values
0 to 255
0 to 255
0 to 255
PCI Bus Interface Parameters
Description
Determines the multiplication factor for granting credit to the TX
side during a weighted round robin arbitration. Values are 0 to 3.
(Default=0) 0 means no extra weighting. The other values are power
of 2 extra weighting, on that traffic. For example if tx_dma_weight
= 0 and rx_dma_weight = 3, then as long as RX traffic is
continuously arriving its priority will be 8
access the PCI
Description
Random early detection and packet drop vectors for
when FIFO threshold is greater than 6,144 bytes and
fewer than 8,192 bytes. Probability of drop can be
programmed on a 12.5 percent granularity. For
example, if bit 8 is set, the first packet out of every
eight will be dropped in this region. (Default=0)
Random early detection and packet drop vectors for
when FIFO threshold is greater than 8,192 bytes and
fewer than 10,240 bytes. Probability of drop can be
programmed on a 12.5 percent granularity. For
example, if bit 16 is set, the first packet out of every
eight will be dropped in this region. (Default=0)
Random early detection and packet drop vectors for
when FIFO threshold is greater than 10,240 bytes and
fewer than 12,288 bytes. Probability of drop can be
programmed on a 12.5 percent granularity. For
example, if bit 24 is set, the first packet out of every
eight will be dropped in this region. (Default=0)
t
imes greater than TX to