Hi all, this patchset introduces native netlink support for the Linux platform.
At the moment openvpn operates on the tun interface and on the routing table by directly invoking the "ip" command (or ifconfig/route if nettools is selected at compile time). With this patchset, openvpn would not need to fork new processes to run the "ip" binary any longer, but would directly talk to the kernel by means of the netlink interface. This means simpler/cleaner code and, possibly, faster execution. Another important advantage of this change is that the openvpn process will be in charge of directly working with the kernel, thus it can be granted special capabilities so that interfaces/routes operations can be carried out even when running as non-root. Christian Hesse is working on a follow-up patch to properly allow the above. This patchset also offers a first step towards a refactoring of the tun.c and route.c code. The idea moving forward is to drop nettools support once this patchset is merged, but to retain support for ip and the --ifconfig/route-noexec options. Feedback of any type is of course welcome. This patch is posted as RFC because, as agreed during the last Hackathon, it will be considered for merging only when unit-tests will also be available. On to pof that, several aspects (like allowing iproute2 to be still used) have to be properly implemented. This code can also be found on GitHub (based on latest master) at: https://github.com/ordex/openvpn/tree/sitnl Regards, Antonio Quartulli (4): configure: add LINUX conditional variable introduce sitnl: Simplified Interface To NetLink tun.c: use sitnl to handle tun configuration on Linux route.c: use sitnl to handle route configuration on Linux configure.ac | 2 + src/openvpn/Makefile.am | 3 + src/openvpn/errlevel.h | 1 + src/openvpn/route.c | 364 +++------------ src/openvpn/sitnl.c | 1195 +++++++++++++++++++++++++++++++++++++++++++++++ src/openvpn/sitnl.h | 217 +++++++++ src/openvpn/tun.c | 199 +++----- 7 files changed, 1547 insertions(+), 434 deletions(-) create mode 100644 src/openvpn/sitnl.c create mode 100644 src/openvpn/sitnl.h -- 2.16.3 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Openvpn-devel mailing list Openvpn-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/openvpn-devel
