Hi Sri, On Feb 10, 2011, at 11:56 AM, Sri Ram Vemulpali wrote: > Hi Santosa, > > Can you please be more explicit. I do manage buffers internally in > my module. > Some cases if it full I will lose data. Can you please provide more > detailed explanation > on how to approach this. Thanks. > > --Sri > > On Wed, Feb 9, 2011 at 10:21 PM, Mulyadi Santosa > <mulyadi.santosa@xxxxxxxxx> wrote: >> On Thu, Feb 10, 2011 at 06:45, Sri Ram Vemulpali >> <sri.ram.gmu06@xxxxxxxxx> wrote: >>> Hi all, >>> >>> How do I map some space between kernel and user space. Can anyone >>> point me in to right direction. I was trying to map the packets from >>> my netfilter function to kernel user space, to avoid over head of >>> copying. Thanks in advance. Isn't it possible if your driver supports mmap? Have you checked it out in Linux Kernel Drive chapter 15? >> >> Not trying to discourage you, but I assume your "filtering" function >> will be engaged many many times in the case of rapid traffic...thus, >> the buffer might grow rapidly too, right? In that case, are you sure >> direct mapping could cope with it? Well unless you're ready to loose >> some data ..... >> >> Anyway, I think you can do that by reserve the buffer in user space >> and the get_user_page() them. As the bridge, a unique device with >> ioctl() might do the job. >> >> -- >> regards, >> >> Mulyadi Santosa >> Freelance Linux trainer and consultant >> >> blog: the-hydra.blogspot.com >> training: mulyaditraining.blogspot.com >> > > > > -- > Regards, > Sri. > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies Daniel. _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
