There must be no line break within the headline.
Signed-off-by: Steffen Gebert <steffen.gebert@informatik.uni-wuerzburg.de>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Unlike system interfaces, DPDK enabled interfaces must have their interface
type explicitly set when used to create ports. Mention this in relevant parts
of the documentation and add references to INTALL.DPDK.md, where there are many
examples.
Signed-off-by: Billy O'Mahony <billy.o.mahony@intel.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
The Stateless TCP Tunnel (STT) protocol encapsulates traffic in
IPv4/TCP packets.
STT uses TCP segmentation offload available in most of NIC. On
packet xmit STT driver appends STT header along with TCP header
to the packet. For GSO packet GSO parameters are set according
to tunnel configuration and packet is handed over to networking
stack. This allows use of segmentation offload available in NICs
The protocol is documented at
http://www.ietf.org/archive/id/draft-davie-stt-06.txt
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
The kernel module can already support outer UDP checksums for
Geneve and VXLAN using the standard checksum flag in tunnel
metadata. This makes userspace aware of the capability so that
users can enable it on tunnel ports.
There is a complication in that there is no way for userspace to
probe or detect if the kernel does not support this capability
in order to warn the user. In this case, connectivity will appear
to function normally but packets will not be checksum protected.
This is mainly an issue for VXLAN which has existed in the kernel
for a some time without checksum support - while there are also
a few kernel versions that support Geneve only without checksums,
they are much less common.
There isn't a particularly good solution to the compatibility
issue without introducing a larger capabilities structure. However,
UDP checksums are likely to be used only rarely at this point in
time and the VXLAN spec (where the main problem lies) recommends
against them. Therefore, this is considered to be an advanced user
feature and we settle for just documenting the issue.
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Pritesh Kothari <pritesh.kothari@cisco.com>
We've been warning about the change since 2.1, which was released a year
ago.
Signed-off-by: Justin Pettit <jpettit@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
I think that the critical commit is commit 4490108b4a5ada (openvswitch:
Allow OVS_USERSPACE_ATTR_USERDATA to be variable length.), which first
appeared in Linux 3.10.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Romain Lenglet <romain.lenglet@oracle.com>
The 2.3 branch has been the long-term release for a while now, but somehow
we forgot to update the FAQ.
Reported-by: Kentaro Ebisawa <ebiken.g@gmail.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Gurucharan Shetty <gshetty@nicira.com>
VXLAN is now RFC, so we better to change the pointer to it.
Signed-off-by: Kentaro Ebisawa <ebiken.g@gmail.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
An examination of the source code and the tests shows that the FAQ claimed
more for version 2.3 than was really in there.
Reported-by: null pointer <null.pointer.boom@gmail.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
We get these questions from time to time and it would be nice to just be
able to cut and paste the answer. (And possibly some people might actually
read the answer straight from the FAQ.)
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Andy Zhou <azhou@nicira.com>
Suggested-by: Lori Jakab <lojakab@cisco.com>
Signed-off-by: Thomas Graf <tgraf@noironetworks.com>
Reviewed-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Converts the majority of docs over to use the Markdown language for
pretty printing on GitHub. It's a rough first convertion without
exploiting the full potential of Markdown at this point. Section
titles and indentation are fixed as needed. Minimal docs interlinking
is added.
Signed-off-by: Thomas Graf <tgraf@noironetworks.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
