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These data structures are never modified so it seems logical for them
to be const.
Signed-off-by: Ben Pfaff <blp@nicira.com>
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rconn_add_monitor() tries to check the version of the controller
connection being monitored, so that it can decide what OpenFlow version to
tell the monitor connection to negotiate. But at any given time an rconn
may not have a controller connection (e.g. during backoff), so rc->vconn
may be null and thus vconn_get_version(rc->vconn) dereferences a null
pointer.
Fixing the problem in a local way would require the rconn to remember the
previous version negotiated, and that fails if the rconn hasn't yet
connected or if the next connection negotiates a new version.
This commit instead adds the ability to a vconn to accept any OpenFlow
message version and modifies "ovs-ofctl snoop" to use that feature, thus
removing the need to negotiate the "correct" version on snoops.
Bug #14265.
Reported-by: Pratap Reddy <preddy@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
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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>
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This is in preparation for allowing the range of allowed OpenFlow versions
to be configured.
As part of this change pvconn_open() is now paramatised over the allowed
versions. this is to avoid avoids needing to provide version information
as a parameter to pvconn_accept(). This will in turn avoid the need to
pass version information to connmgr_run().
Signed-off-by: Simon Horman <horms@verge.net.au>
[blp@nicira.com simplified slightly and generalize log messages]
Signed-off-by: Ben Pfaff <blp@nicira.com>
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Use an enum for ofp_version in ofp-util and ofp-msg.
This in conjunction with the use of switch() statements
allows the compiler to warn when a new ofp_version isn't handled.
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
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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>
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The DSCP_INVALID flag allowed callers to prevent socket-util from
modify the DSCP bits of newly created sockets. However, the two
really important callers (implementations of the controller and
manager tables) never used it. Furthermore, the other callers
would be fine always setting the DSCP bits to zero. This patch
removes the DSCP_INVALID option in an effort to simplify the code.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
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The changes allow the user to specify a separate dscp value for the
controller connection and the manager connection. The value will take
effect on resetting the connections. If no value is specified a default
value of 192 is chosen for each of the connections.
Feature #10074
Requested-by: Rajiv Ramanathan <rramanathan@nicira.com>
Signed-off-by: Mehak Mahajan <mmahajan@nicira.com>
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The vconn code is a relative fossil as OVS code goes. It was written
before we had really figured how code should fit together. Part of that
history is that it used poll_fd_callback() to register callbacks without
the assistance of other code. That isn't how the rest of OVS works now;
this code is the only remaining user of that function.
To make it more like the rest of the system, this code gets rid of the use
of poll_fd_callback(). It also adds vconn_run() and vconn_run_wait()
functions and calls to them from the places where they are now required.
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This member is initialized, but nothing ever reads it, so get rid of it.
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The in-band control code needs to know the IP and port of both ends of the
control connection. However, the vconn code was only reporting the local
address after the connection had already succeeded, which created a
chicken-and-egg problem. In practice we would fail to connect until the
switch went into fail-open, at which point the connection would go through.
Fortunately, we can get the local IP address right after we try to connect,
not just after the connection completes, so this commit changes the code
to do that.
This commit also breaks setting the remote IP and port into functions
separate from vconn_init(), which makes the code more readable.
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Previously, rconn and vconn only allowed users to find out about the
remote IP address. This set of changes allows users to retrieve the
remote port, local IP, and local port used for the connection.
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