if u are talking about block device. then go and check device mapper. ming On Tue, 2006-04-11 at 14:54 +0530, Pankaj Chauhan wrote: > > hi all, > > Is there any framework available in linux kernel > (2.6.x) to stack the modules (or device drivers to be > specific). what i want is NETFILTER (which is > available for network stack) kind of frame work for > device drivers. > > Lets say i have a driver d1 for device D, d1 > implements very basic funtionality like configuration, > read and write to device D. now i want some more > complex funtions such as compression or encryption of > data that is written to D, so i want that i write a > driver d2 which sits on top of d1 and implement new > funtionality. so we have a picture like > > d2 (compression / encryption) > | > d1 (basic functions) > | > D (device) > > I understand that it is possible to implement this > stacking by code changes in d1 and d2, but tomorrow if > i want to insert another funtionality implemented as > d3 which should go between d2 and d1, i do'nt want to > do any code changes to d1 and d2, i want that there > should be a framework which allows me to implement > this stacking without any code change in my driver. > > Thanks in advance. > > Pankaj Chauhan > > > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
