Intel PCI Good Octets Transmitted Count, Receive No Buffers Count, Gotcl 04090h R/ Gotch 04094 R

Register Descriptions

Table 13-123. GORCL and GORCH Register Bit Description

31 0

GORCH

31 0

GORCL

Field	Bit(s)	Initial	Description
		Value
GORCL	31:0	0b	Number of good octets received – lower 4 bytes.
GORCH	31:0	0b	Number of good octets received – upper 4 bytes.

13.7.32Good Octets Transmitted Count

GOTCL (04090h; R)/ GOTCH (04094; R)

These registers make up a 64-bit register that counts the number of good (no errors) octets transmitted. This register resets each time the upper 32 bits are read (GOTCH).

In addition, it sticks at FFFF_FFFF_FFFF_FFFFh when the maximum value is reached. This register includes bytes transmitted in a packet from the <Destination Address> field through the <CRC> field, inclusively. This register counts octets in successfully transmitted packets that are 64 or more bytes in length. This register only increments if transmits are enabled.

These octets do not include octets in transmitted flow control packets.

Table 13-124. GOTCL and GOTCH Register Bit Description

31 0

GOTCH

31 0

GOTCL

Field	Bit(s)	Initial	Description
		Value
GOTCL	31:0	0b	Number of good octets transmitted – lower 4 bytes.
GOTCH	31:0	0b	Number of good octets transmitted – upper 4 bytes.

13.7.33Receive No Buffers Count

RNBC (040A0h; R)

This register counts the number of times that frames were received when there were no available buffers in host memory to store those frames (receive descriptor head and tail pointers were equal). The packet is still received if there is space in the FIFO. This register only increments if receives are enabled.

352 Software Developer’s Manual