82598EB Datasheet, PDF (251/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - Transmit Functionality
Table 3-69. Valid Fields by Offload Option
Required Offload
TSE
TSXM
IXSM
N/A
1
1
N/A
1
1
1
1
1
0
1
X
0
0
1
0
0
0
VLAN
VLE
VLE
VLE
VLE
VLE
VLE
L4LEN
Yes
Yes
Yes
No
No
No
Valid Fields in Context
IPLEN
MSS
L4T
MACLEN
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
No
No
No
No
3.5.3.3.1.3 Advanced Transmit Data Descriptor
Table 3-70. Advanced Transmit Data Descriptor Read Format
0
8
63
PAYLEN
Address[63:0]
POPTS
IDX
STA
DCMD
DTYP
RSV
46 45 40 39 36 35 32 31 24 23 20 19
Table 3-71. Advanced Transmit Data Descriptor Write-Back Format
0
8
63
RSV
RSV
STA
36
35 32 31
NXTSEQ
IPv4
Yes
Yes
Yes
Yes
Yes
No
DTALEN
0
0
Address (64)
This field holds the physical address of a data buffer in host memory that contains a portion of a
transmit packet.
DTALEN (16)
This field holds the length in bytes of data buffer at the address pointed to by this specific descriptor.
RSV(4)
Reserved
251