Method and system for transparent TCP offload with best effort direct placement of incoming traffic

US8416768B2 · kind B2 · utility

Assignee

• Broadcom Israel Research, Ltd. · IL

Inventors

• Eliezer Aloni · Kochav Yair Tzur Yigal, IL
• Rafi Shalom · Givat Shmuel, IL
• Shay Mizrachi · Hod HaSharon, IL
• Dov Hirshfeld · Givat Shmuel, IL
• Aviv Greenberg · Netanya, IL
• Assaf Grunfeld · Hod HaSharon, IL
• Eliezer Tamir · Bet Shemesh, IL
• Guy Corem · Herzliya, IL
• Ori Hanegbi · Herzliya, IL

Key dates

• Filing date: Apr 5, 2010
• Grant date: Apr 9, 2013
• Expiry date: Apr 20, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02D30/50
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

Certain aspects of a method and system for transparent transmission control protocol (TCP) offload with best effort direct placement of incoming traffic are disclosed. Aspects of a method may include collecting TCP segments in a network interface card (NIC) processor without transferring state information to a host processor every time a TCP segment is received. When an event occurs that terminates the collection of TCP segments, the NIC processor may generate a new aggregated TCP segment based on the collected TCP segments. If a placement sequence number corresponding to the generated new TCP segment for the particular network flow is received before the TCP segment is received, the generated new TCP segment may be transferred directly from the memory to the user buffer instead of transferring the data to a kernel buffer, which would require further copy by the host stack from kernel buffer to user buffer.