Intel Intel Gigabit Ethernet Controllers, PCI-X TCP Segmentation Context Transmitted Count

Register Descriptions

13.7.53TCP Segmentation Context Transmitted Count

TSCTC (040F8h; R)

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 Ethernet controller’s on-chip transmit buffer. Note that this 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.

31 0

TSCTC

Field	Bit(s)	Initial	Description
		Value
TSCTC	31:0	0b	Number of TCP Segmentation contexts transmitted count.

13.7.54TCP Segmentation Context Transmit Fail Count

TSCTFC (040FCh; R)

This register counts the number of TCP segmentation offload requests to the hardware that failed to transmit all data in the TCP segmentation context payload. There is no indication by hardware of how much data was successfully transmitted. Only one failure event is logged per TCP segmentation context. Failures can be caused by excessive collisions or PAYLEN errors. This register only increments if transmits are enabled.

31 0

TSCTFC

Field	Bit(s)	Initial	Description
		Value
TSCTFC	31:0	0b	Number of TCP Segmentation contexts where the Ethernet
			controller failed to transmit the entire data payload.

Software Developer’s Manual 363