公开(公告)号：CA2741141A1

公开(公告)日：2010-09-10

申请号：CA2741141

申请日：2010-02-16

Applicant: IBM

Inventor： CARDONA OMAR ,  OCHS MATTHEW RYAN ,  CUNNINGHAM JAMES BRIAN ,  DE LEON III BALTAZAR

IPC: G06F9/46 ,  G06F9/50

Abstract: A method, system, and computer program product for circumventing data copy operations in a virtual network environment. The method includes copying a data packet from a user space to a first kernel space of a first logical partition (LPAR). Using a hypervisor, a mapped address of a receiving virtual Ethernet driver in a second LPAR is requested. The first mapped address is associated with a buffer of the receiving virtual Ethernet driver. The data packet is copied directly from the first kernel space of the first LPAR to a destination in a second kernel space of the second LPAR. The destination is determined utilizing the mapped address. The direct copying to the destination bypasses (i) a data packet copy operation from the first kernel space to a transmitting virtual Ethernet driver of the first LPAR, and (ii) a data packet copy operation via the hypervisor. The receiving virtual Ethernet driver is notified that the data packet has been successfully copied to the destination in the second LPAR.