datapath/udatapath now sends ofp_flow_removed messages instead of
nx_flow_end. This allows for the removal of secchan/flow-end.* as
flow-end message now no longer need to be translated.
collector
Fix BUG#49: Add OpenFlow protocol statistical information collector
and user interface. This feature use PRIVATE_VENDOR_ID to communicate
betwewn control plane process and user interface. PRIVATE_VENDOR_ID is
defined only for private use (and based on private OUI).
Fix BUG#47: Add simple controller failover to provide control plane
session redundancy.
Improved BUG#47: Add liveliness check of a peer using ECHO exchange
with non-zero XID.
Fix BUG#50: Change minimum configurable value of inactivity-timer for
OpenFlow control plane session to provide quick controller failover.
Change ofprotocol(8) man page to describe failover.
Remove monolithic OpenFlow switch.
Add userspace datapath.
Fix BUG#13: Revise check wildcards for in_port != out_port output
validation.
Fix BUG#30: Made use of get_jiffies_64 instead of jiffies.
Fix BUG#31: Fix NetFPGA crash in case of test_delete test harness run.
Fix BUG#32: Add stack depth limitation to avoid inifinite loop in
log_backtrace.
Fix BUG#33: Improve NetFPGA kernel extension and NetFPGA image to
support MAC address rewrite features (two actions) on NetFPGA enabled
OpenFlow switch.
Fix BUG#34: Add NetFPGA kernel extension source codes to create
distribution package with NetFPGA correctly.
Fix BUG#38: Improve regression test for FLOW_MOD ACTION SET_DL_SRC and
SET_DL_DST.
Fix BUG#39: Correct misunderstanding of byte order ops for OFPAT_XXX.
When a network link is flooded with traffic, secchan's OpenFlow socket
queue becomes congested with traffic. This leaves no room for replies
to OpenFlow requests relayed to that socket by secchan.
This commit modifies secchan to use separate sockets for asynchronous
traffic and for OpenFlow requests/replies, which should avoid the problem.
Otherwise, running the script through an explicit shell invocation, such
as "sh -x <script>" for debugging, will fail to set -e and therefore the
script's behavior will change.
This makes it easier to install the headers, or to use them directly from
another software package with -I$(openflow)/include, without invading
the top-level include file namespace.
Move vlog option descriptions into a separate file lib/vlog.man that
is substituted into manpages.
Get rid of individual rules for substituting most files in favor of
a single suffix rule. Unfortunately this loses the (Emacs-specific)
read-only markings but it simplifies the makefiles.
* New command-line options for configuring log files, hence:
- Centralized vlog usage messages.
* New vlogconf action for reopening log files.
* New vlogconf support for specifying a target by pidfile.
Make "make" behave properly when these are changed by re-running
"configure", by putting their definitions into a generated file that
depends on Makefile.
Fail-open mode is entered or left in a secchan "periodic" callback, which
may not be called immediately after the connection to the controller
actually comes up. This can cause the fail-open local-packet CB to
locally handle messages from the datapath and drop them, causing the
controller to think that it's being ignore and drop the connection.
Thanks to Dan for raising the issue.
Before, we tried to use the port configuration bits to implement STP; e.g.
if a port was in LISTEN state we turned off sending and receiving frame
other than BPDUs. Unfortunately this interacts very badly with in-band
control: when the switch connects to the controller, it can be connected
to the controller over a port that is not in FORWARD, and so then the
controller disabled that port, and the connection eventually dropped when
an echo request/reply failed to get through.
Now, we implement STP by querying the flows on the switch and killing
off the ones that STP does not allow. This works much better because,
although we still kill off the in-band control connection, the in-band
hook in secchan is then able to resurrect it.
--no-stp is still the default since this has not been tested very much.
Glen Gibb
Mikio Hara
Ben Pfaff
Justin Pettit