This commit changes the code such that arguments to thread-safety
macros are not ampersanded.
Signed-off-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit changes the code to use OVS_REQUIRES() instead of
OVS_REQ_WRLOCK(), for plain mutex.
Signed-off-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
This is a straight search-and-replace, except that I also removed #include
<assert.h> from each file where there were no assert calls left.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
Casts are sometimes necessary. One common reason that they are necessary
is for discarding a "const" qualifier. However, this can impede
maintenance: if the type of the expression being cast changes, then the
presence of the cast can hide a necessary change in the code that does the
cast. Using CONST_CAST, instead of a bare cast, makes these changes
visible.
Inspired by my own work elsewhere:
http://git.savannah.gnu.org/cgit/pspp.git/tree/src/libpspp/cast.h#n80
Signed-off-by: Ben Pfaff <blp@nicira.com>
Replaced all instances of Nicira Networks(, Inc) to Nicira, Inc.
Feature #10593
Signed-off-by: Raju Subramanian <rsubramanian@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
The unixctl library had used the vde2 management protocol since the
early days of Open vSwitch. As Open vSwitch has matured, several
Python daemons have been added to the code base which would benefit
from a unixctl implementations. Instead of implementing the old
unixctl protocol in Python, this patch changes unixctl to use JSON
RPC for which we already have an implementation in both Python and
C. Future patches will need to implement a unixctl library in
Python on top of JSON RPC.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Users may want to force the network to flush its MAC tables by
manually triggering a topology change event due to some event in
the system.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
The spanning tree library keeps track of time to know how often it
should update its state and send out BPDUs. OVS is able to track time
in milliseconds, but STP uses a coarser-grained count (256 ticks per
second). To prevent losing milliseconds that didn't account for an
entire tick, the library keeps track of these remaining milliseconds. A
bug miscalculated the remainder and made it too high, which caused the
library to think time was passing more quickly than it was.
This bug wasn't noticeable on a quiet system, since STP only asks to be
woken every second. However, a system with a lot of activity would wake
OVS more frequently and have it call the subsystems' "run" functions.
Bug #8283
When debugging spanning tree, it's useful to have counters about how
many BPDUs have been sent and received. This commit keeps track of
these counters and stores them in a new "statistics" column of the Port
table.
Feature #8103
- Don't apply endian conversions to flags, which are 8 bits.
- Use #defines for default times for use outside library.
- Clarify our behavior when in STP_DISABLED state.
- Add "aux" member to STP port struct to be able to refer back to
the owning port.
- Define macros to print STP bridge and port ids.
- New helper function to get port id.
- New helper function to convert speed to cost.
- New functions to describe current role of port.
At one point, the OVS distribution contained an IEEE 802.1D Spanning
Tree Protocol (STP) library written by Ben Pfaff and based on the
802.1D-1998 reference code. It was never integrated into ovs-vswitchd,
so it was removed as part of commit ba18611 (Remove vestigial support
for Spanning Tree Protocol.)
This commit reintroduces the library, cleans up a few spots, and makes
it build cleanly against new code. A future commit will have
ovs-vswitchd use this library.
Open vSwitch has never properly supported IEEE 802.1D Spanning Tree
Protocol (STP), but it has various bits and pieces that claim to support
it. This commit deletes them, to reduce the amount of dead code in the
tree. We can always reintroduce it later if it proves to be a good idea.
Bug #1175.
Adding a macro to define the vlog module in use adds a level of
indirection, which makes it easier to change how the vlog module must be
defined. A followup commit needs to do that, so getting these widespread
changes out of the way first should make that commit easier to review.
On some system, at least, one must include <sys/types.h> before
<netinet/in.h>, and <netinet/in.h> before <arpa/inet.h> or <net/if.h>.
From Jean Tourrilhes <jt@hpl.hp.com>.
