Le mardi 24 mai 2011 Ã 15:03 +0200, Pierre Rondou a Ãcrit : > Hello, > > I'm a student at the University of Liege, currently developing a NAT64 > (see RFC 6146) module for Netfilter. > > In order to develop this module, I had to use some in-kernel function, > such as icmp_send, ip6_output, ip_finish_output, ... and many more. > > But many of those functions didn't have an "EXPORT_SYMBOL" allowing them > to be reachable from outside the kernel. > > So, to be able to use them, I had to copy paste about 1500 lines of > kernel source code (those functions + related functions). This makes the > module hardly updatable as all those functions are likely to be updated. > > Is there a reason why those functions are not associated with an > "EXPORT_SYMBOL"? We dont export all possible symbols (each export has a memory cost) We export one symbol when its needed from a module. Dont copy/paste code, but add EXPORT_SYMBOL when/if needed. icmp_send() is for sure already exported (needed in various netfilter modules) -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
