Ethernet MMF/UTP Adapter Installation and User's Guide

34 Sun PCI-Express Dual Gigabit Ethernet MMF/UTP Adapter Installation and User’s Guide • June 2006
Sun PCI-Express Dual Gigabit Ethernet
Device Driver Parameters
You can manually configure the ipge device driver parameters to customize each
Sun PCI-Express Dual Gigabit Ethernet device in your system. This section lists the
available ipge device driver parameters, and describes how to configure these
parameters.
tx_max_pend Maximum number of transmits pending on any of the four queues.
rx_hdr_pkts Number of packets received that were less than 256 bytes.
rx_mtu_pkts Number of packets received that were greater than 256 bytes and
less than 1514 bytes.
rx_split_pkts Number of packets that were split across two pages.
rx_no_comp_wb Number of times the hardware could not post completion entries
for received data.
rx_no_buf Number of times the hardware could not receive data because there
is no more receive buffer space.
rx_new_pages Number of pages that were replaced during reception.
rx_new_hdr_pgs Of those pages that were filled with packets less than 256 bytes, the
number of pages that were replaced during reception.
rx_new_mtu_pgs Of those pages that were filled with packets greater than 256 bytes,
and less than 1514, the number of pages that were replaced during
reception.
rx_new_nxt_pgs Number of pages that contained packets that were split across
pages that were replaced during reception.
rx_hdr_drops Number of times an entire page of packets less than 256 bytes each
was dropped because the driver was unable to map a new page to
replace it.
rx_mtu_drops Number of times an entire page of packets greater than 256 bytes
and less than 1514 each was dropped because the driver was unable
to map a new page to replace it.
rx_nxt_drops Number of times a page with a split packet was dropped because
the driver was unable to map a new one to replace it.
TABLE 3-3 Transmit and Receive Parameters (Continued)
Parameter Description