[mpls-linux-general] (no subject)

[anish v. <ani...@re...>]

hi,
i am working on MPLS regarding that i want to open a file from 
kernel to store ip address of the destination of forwarded pkt..
for which i am using the code below in mpls_ouput function ..

char *buffer = kmalloc(4096,GFP_KERNEL);
oldfs = get_fs();
set_fs(KERNEL_DS);
fd=open("/dev/test",O_RDWR,0);
if(fd){
   read(fd,buffer,BUFFSIZE);
}
close(fd);
set_fs(oldfs);

but as soon as i ping another m/c my PC hangs..
can u please tell what is wrong with the above code..
whether i should use some lock... or is there any other method of 
opening a file from kernel
thanx in advance
anish