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Intel
®
82575EB Gigabit Ethernet Controller — Multicast Packets Transmitted Count - MPTC
(040F0h; RC)
Intel
®
82575EB Gigabit Ethernet Controller 324632-003
Software Developer’s Manual and EEPROM Guide Revision: 2.1
430 January 2011
Due to changes in the standard for maximum frame size for VLAN tagged frames in 802.3, the 82575
transmits packets that have a maximum length of 1522 bytes. The RMON statistics associated with this
range has been extended to count 1522 byte long packets. This register counts all packets, including
standard and secure packets (management packets must never be more than 200 bytes). If
CTRL.Extended_VLAN is set, packets up to 1526 bytes are counted by this counter.
14.9.49 Multicast Packets Transmitted Count - MPTC
(040F0h; RC)
This register counts the number of multicast packets transmitted. This register does not include flow
control packets and increments only if transmits are enabled. Counts clear as well as secure traffic.
14.9.50 Broadcast Packets Transmitted Count - BPTC
(040F4h; RC)
This register counts the number of broadcast packets transmitted. This register only increments if
transmits are enabled. This register counts all packets, including standard and secure packets
(management packets must never be more than 200 bytes).
14.9.51 TCP Segmentation Context Transmitted Count -
TSCTC (040F8h; RC)
This register counts the number of TCP segmentation offload transmissions and increments once the
last portion of the TCP segmentation context payload is segmented and loaded as a packet into the on-
chip transmit buffer. Note that it is not a measurement of the number of packets sent out (covered by
other registers). This register only increments if transmits and TCP segmentation offload are enabled.
This counter only counts pure TSO transmissions.
Field Bit(s)
Initial
Value
Description
PTC1522 31:0 0b Number of packets transmitted that are 1024 or more bytes in length.
Field Bit(s)
Initial
Value
Description
MPTC 31:0 0b Number of multicast packets transmitted.
Field Bit(s)
Initial
Value
Description
BPTC 31:0 0b Number of broadcast packets transmitted count.
Field Bit(s)
Initial
Value
Description
TSCTC 31:0 0b Number of TCP Segmentation contexts transmitted count.