发明名称 |
TCP/IP offload device with fast-path TCP ACK generating and transmitting mechanism |
摘要 |
A network interface device has a fast-path ACK generating and transmitting mechanism. ACKs are generated using a finite state machine (FSM). The FSM retrieves a template header and fills in TCP and IP fields in the template. The FSM is not a stack, but rather fills in the TCP and IP fields without performing transport layer processing and network layer processing sequentially as separate tasks. The filled-in template is placed into a buffer and a pointer to the buffer is pushed onto a high-priority transmit queue. Pointers for ordinary data packets are pushed onto a low-priority transmit queue. A transmit sequencer outputs a packet by popping a transmit queue, obtaining a pointer, and causing information pointed to by the pointer to be output from the network interface device as a packet. The sequencer pops the high-priority queue in preference to the low-priority queue, thereby accelerating ACK generation and transmission.
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申请公布号 |
US2007118665(A1) |
申请公布日期 |
2007.05.24 |
申请号 |
US20070656809 |
申请日期 |
2007.01.22 |
申请人 |
PHILBRICK CLIVE M;BOUCHER LAURENCE B;BLIGHTMAN STEPHEN E;CRAFT PETER K;HIGGEN DAVID A;STARR DARYL D |
发明人 |
PHILBRICK CLIVE M.;BOUCHER LAURENCE B.;BLIGHTMAN STEPHEN E.;CRAFT PETER K.;HIGGEN DAVID A.;STARR DARYL D. |
分类号 |
G06F15/16;H04L12/56;H04L29/06;H04L29/08 |
主分类号 |
G06F15/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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