On Saturday, January 16, 2016 16:40:09 Marek Lindner wrote: > From: Linus Luessing <[email protected]> > > The B.A.T.M.A.N. protocol originally only used a single > message type (called OGM) to determine the link qualities to > the direct neighbors and spreading these link quality > information through the whole mesh. This procedure is > summarized on the BATMAN concept page and explained in > details in the RFC draft published in 2008. > > This approach was chosen for its simplicity during the > protocol design phase and the implementation. However, it > also bears some drawbacks: > > * Wireless interfaces usually come with some packet loss, > therefore a higher broadcast rate is desirable to allow > a fast reaction on flaky connections. > Other interfaces of the same host might be connected to > Ethernet LANs / VPNs / etc which rarely exhibit packet > loss would benefit from a lower broadcast rate to reduce > overhead. > * It generally is more desirable to detect local link > quality changes at a faster rate than propagating all > these changes through the entire mesh (the far end of > the mesh does not need to care about local link quality > changes that much). Other optimizations strategies, like > reducing overhead, might be possible if OGMs weren't > used for all tasks in the mesh at the same time. > > As a result detecting local link qualities shall be handled > by an independent message type, ELP, whereas the OGM message > type remains responsible for flooding the mesh with these > link quality information and determining the overall path > transmit qualities. > > Developed by Linus during a 6 months trainee study period in > Ascom (Switzerland) AG. > > Signed-off-by: Linus Luessing <[email protected]> > Signed-off-by: Marek Lindner <[email protected]> > Signed-off-by: Antonio Quartulli <[email protected]> > --- > Makefile | 3 + > README.external | 1 + > gen-compat-autoconf.sh | 1 + > net/batman-adv/Kconfig | 14 ++++ > net/batman-adv/Makefile | 2 + > net/batman-adv/bat_algo.h | 15 +++- > net/batman-adv/bat_v.c | 74 +++++++++++++++++ > net/batman-adv/bat_v_elp.c | 193 > +++++++++++++++++++++++++++++++++++++++++++++ net/batman-adv/bat_v_elp.h > | 27 +++++++ > net/batman-adv/main.c | 1 + > net/batman-adv/packet.h | 20 +++++ > net/batman-adv/types.h | 18 +++++ > 12 files changed, 368 insertions(+), 1 deletion(-) > create mode 100644 net/batman-adv/bat_v.c > create mode 100644 net/batman-adv/bat_v_elp.c > create mode 100644 net/batman-adv/bat_v_elp.h
Applied in revision a4b88af. Thanks, Marek
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