Hi, > I understand why you avoid the header compression, the problem is if > one is running an encryption application, etc it is difficult to > compress he payload.
If encryption is used, you may or may not be able to compress the packet. It depends on the encryption used: - With IPsec (ie. the ESP protocol), you can use the IP/ESP profile of ROHC for example. - With SSL/TLS encryption at application level, you can use the IP-only, IP/UDP, IP/UDP/RTP... profiles without any problem. > If for example, you create a raw socket then > your application is able to write the headers and also compress it. > I have a bit of a problem getting my head around memcopy, and on that > is it possible to use a framework such as Netmap which is way much > efficient in the IO, What I am thinking of is to create ROHC as a > device driver in that respect. You can then use mmap system call > instead of memcopy to map ROHC device memory directly into a user > process's address space. I am not a programmer but I think it's more > efficient to use kernel kiobuf implement DMA raw I/O. Just my > thoughts. Sorry, I'm not sure to understand your thoughts. If you need an answer, please rephrase them. Regards, Didier
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