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

Youcan 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 receivedthat were less than 256 bytes.
rx_mtu_pkts Number of packets receivedthat were greater than 256 bytes and
less than 1514 bytes.
rx_split_pkts Number of packets that weresplit across two pages.
rx_no_comp_wb Number of times the hardwarecould not post completion entries
for receiveddata.
rx_no_buf Numberof times the hardware could not receive data because there
is no more receivebuffer space.
rx_new_pages Number of pages that werereplaced during reception.
rx_new_hdr_pgs Ofthose pages that were filled with packets less than 256 bytes, the
number of pages that were replacedduring reception.
rx_new_mtu_pgs Of those pages that werefilled with packets greater than 256 bytes,
and less than 1514, the number of pages thatwere replaced during
reception.
rx_new_nxt_pgs Number of pages that contained packets that weresplit across
pages that werereplaced during reception.
rx_hdr_drops Number of times an entirepage of packets less than 256 bytes each
was droppedbecause the driver was unable to map a new page to
replaceit.
rx_mtu_drops Number of times an entirepage of packets greater than 256 bytes
andless than 1514 each was dropped because the driver was unable
to map a new page to replaceit.
rx_nxt_drops Number of times a page with a split packet was droppedbecause
the driver was unable to map a new one to replaceit.
TABLE3-3 Transmitand Receive Parameters (Continued)
Parameter Description