网卡RSS遇到IP分片会如何?
如果RSS需要根据端口号进行计算,那么,在IP分片时,没有端口号的情况下,RSS还有用吗? 回复 1# forxy那要这么说,ICMP 肿么办呢。RSS 应该不需要判断到四层的信息。
Godbach 发表于 2016-08-11 21:53 static/image/common/back.gif
回复 1# forxy
那要这么说,ICMP 肿么办呢。RSS 应该不需要判断到四层的信息。
要吧,RSS就是根据五元祖来分发的
如果没有端口号来判断分发,不行的
分片包本来就很少,可能也是原因之一吧 具体的可以看看intel-82599网卡的datasheet有介绍,下面是截取的简介
Section 7.1.2.8.1, RSS Hash Function. A note has been added. See “Note: IPv6
extended headers are parsed by the 82599, enabling TCP layer header recognition.
Still the IPv6 extended header fields are not taken into account for the queue
classification by RSS filter. This rule do not apply for security headers and
fragmentation header. Packets with fragmentation header miss this filter. Packets with
security extended headers are parsed only up to these headers and therefore can
match only filters that do not require fields from the L4 protocol.
这个看芯片的能力吧。具体看硬件spec,楼上已经给出了例子。
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