Interrupt Parameters; Random Early Drop Parameters; Table 4-7 Rx Blanking Register For Alias Read; Table 4-8 Rx Random Early Detecting 8-Bit Vectors - Sun Microsystems GigaSwift Ethernet Adapter Installation And User Manual

Interrupt Parameters

describes the receive interrupt blanking values.
TABLE 4-7
RX Blanking Register for Alias Read
TABLE 4-7
Field Name Values
0 to 511
rx_intr_pkts
0 to 524287
rx_intr_time

Random Early Drop Parameters

describes the RX random early detection 8-bit vectors, which allow you to
TABLE 4-8
enable random early drop (RED) thresholds. When received packets reach the RED
range packets are dropped according to the preset probability. The probability
should increase when the FIFO level increases. Control packets are never dropped
and are not counted in the statistics.
RX Random Early Detecting 8-Bit Vectors
TABLE 4-8
Field Name Values
0 to 255
red_dv4to6k
Description
Interrupt after this number of packets have arrived since
the last packet was serviced. A value of zero indicates no
packet blanking. (Default=3)
Interrupt after 4.5 US ticks have elapsed since the last
packet was serviced. A value of zero indicates no time
blanking. (Default=1250)
Description
Random early detection and packet drop vectors for
when FIFO threshold is greater than 4096 bytes and
fewer than 6,144 bytes. Probability of drop can be
programmed on a 12.5 percent granularity. For
example, if bit 0 is set, the first packet out of every
eight will be dropped in this region. (Default=0)
Chapter 4 Configuring Driver Parameters 43