MFC 182089: Don't calculate checksum if it has already been validated lro_opt.diff
MFC 182089:
Don't calculate checksum if it has already been validated
lro_opt.diff

Approved by:	re
Obtained from:	Chelsio Inc.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase