This change adds the check_tnl_key functionality for BFD.
When the feature is enabled, BFD will only accept control
packets with a tunnel key of 0.
Signed-off-by: Pavithra Ramesh <paramesh@vmware.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
Added appctl commands to override the bfd forwarding status. Values
of true/false/normal are allowed. When set to normal, the bfd
forwarding status is left unchanged. Else, the forwarding status is
set to the specified value - true/false.
Signed-off-by: Pavithra Ramesh <paramesh@vmware.com>
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
We always look at the fragment status and often look at other L3
headers when processing the packet, so just un-wildcard the
Ethertype.
Signed-off-by: Justin Pettit <jpettit@nicira.com>
A number of fields are looked at when determining whether special
processing (slow-path) is needed. This commit removes wildcarding when
they were consulted.
Reported-by: Ethan Jackson <ethan@nicira.com>
Reported-by: Paul Ingram <paul@nicira.com>
Signed-off-by: Justin Pettit <jpettit@nicira.com>
Invoke the function to reconfigure BFD when a port/interface
is deleted.
Signed-off-by: Pavithra Ramesh <paramesh@vmware.com>
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
