I am seeking infomation on how to use TCP Checksum Off-load to tell
the Solaris 8 stack not to handle it for both receives and transmits
(and let our NIC handle this compute-intensive task instead).
There is mention that Sun GigabitEthernet Adapter cards, Release 1.1
supports Sol-2.6 use of NIC features: TCP checksum offload & byte
There are limited bits of info in include files. For example
sys/strick.h indicates use of:
struct datab's unsigned u16:16; /* used to store hw-calculated cksum
#define STRUIO_IP 0x04 /* IP checksum stored in db_struioun */
#define STRUIO_ZC 0x08 /* mblk eligible for zero-copy */
Also /include/inet/tcp.h has tcp_sum field for outbound segments.
Do you have any advice? Thank you. -Weimin Tchen