Issue 11
© Solarflare Communications 2014
107
Solarflare Server Adapter
User Guide
rx_dp_emerg_wait
Increments each time the adapter has done an emergency
fetch which has not yet completed.
tx_merge_events
The number of TX completion events where more than one
TX descriptor was completed.
tx_tso_bursts
The number of times a block of data (up to 64Kb) was
accepted to be sent via TSO.
tx_tso_long_headers
Number of times the header in the TSO packet was
>tx_copybreak limit.
tx_tso_packets
The number of packets formed and sent by TSO.
tx_pushes
Number of transmit packet descriptors ’pushed’ to the
adapter - rather than the adapter having to fetch the
descriptor before transmitting the packet.
tx_pio_packets
Number of packets sent using Programmed Input/Output
(PIO).
rx_reset
0
rx_tobe_disc
Number of packets marked by the adapter to be discarded
because of one of the following:
• Mismatch unicast address and unicast promiscuous
mode is not enabled.
• Packet is a pause frame.
• Packet has length discrepancy.
• Due to internal FIFO overflow condition.
• Length < 60 bytes.
rx_ip_hdr_chksum_err
Number of packets received with IP header Checksum error.
rx_tcp_udp_chksum_err
Number of packets received with TCP/UDP checksum error.
rx_eth_crc_err
Number of packets received whose CRC did not match the
internally generated CRC value.
rx_mcast_mismatch
Number of unsolicited multicast packets received.
Unwanted multicast packets can be received because a con-
nected switch simply broadcasts all packets to all endpoints
or because the connected switch is not able or not config-
ured for IGMP snooping - a process from which it learns
which endpoints are interested in which multicast streams.
Table 26: Ethtool -S Output
Field
Description