kalash nainwal wrote: > On 2/22/07, kristrev@xxxxxxxxxxxxxxxxxxxxx > <kristrev@xxxxxxxxxxxxxxxxxxxxx> wrote: >> Hello, >> >> I am working on optimizing the TCP-code for a certain type of TCP-stream, >> and to make one of my optimizations work I need to copy data from one SKB >> (the data field of the skb) to another SKB (data field). >> >> Currently I am using memcpy, and it does what it is supposed to, but I am >> curious as to if there are any other (potentially faster/more efficient) >> ways of doing it. I have checked out the skb_add_data (used when you can >> copy data from the msg you are sending into the most recent skb added to >> the queue), but from what I can understand it only copies from userspace >> into kernelspace (whereas I need to copy kernel-kernel). >> >> Does anyone have any hints, suggestions, solutions or something else they >> think might help? >> >> Thanks, >> Kristian >> >> - > > How about cloning? Is that an option? > - > To unsubscribe from this list: send the line "unsubscribe linux-net" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > skb_clone is an option but you cannot modify any data - correct me if I am wrong. The other options are pskb_copy and skb_copy used when modifications are necessary - correct if I am wrong. You just have to chose which is appropriate for your specific needs. LDB - To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
