Until now, some values could not be encoded to send over OpenFlow, for a
few possible reasons. This meant that, when one of these situations came
up, that a controller would not receive any notification that its request
failed. This is not a good way to behave, so this commit changes the
error encoder so that, if a particular error cannot be encoded, it will
instead encode a fallback error code.
This commit also slightly simplifies ofconn_send_error() because it no
longer has to handle ofperr_encode_error() returning NULL.
Reported-by: Jarno Rajahalme <jarno.rajahalme@nsn.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
The main use of OFPERR_* is to define specific errors, but OFPERR_* also
existed for each possible category of error, to enable partial decoding of
unknown specific errors within a known category. However, in practice,
it was very easy to misuse the error categories as if they were particular
errors. This commit removes the error category values, to make that error
impossible.
(If partial decoding of unknown specific errors turns out to have been a
valuable feature, then we can reintroduce it some other way.)
Signed-off-by: Jarno Rajahalme <jarno.rajahalme@nsn.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
When ofp-errors was introduced, each OFPERR_* was either an extension or
not. However, since then, some Nicira extension error code have been
given official error codes in later OpenFlow versions, so now whether an
OFPERR_* is an extension depends on the OpenFlow versions. This means
that certain errors were encoded incorrectly as extensions in later
OpenFlow versions. This commit fixes the problem.
This commit also adds a test that should prevent a regression.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Initial OpenFlow 1.3 support with new include/openflow/openflow-1.3.h.
Most of the messages that differ from 1.2 are implemented. OFPT_SET_ASYNC
is implemented via NX_SET_ASYNC_CONFIG, other new message types are yet to
be implemented. Stats replies that add duration fields are implemented at
encode/decode level only. Test cases for implemented features are included.
Remaining FIXME:s should not cause runtime aborts. Make check comes out
clean.
Signed-off-by: Jarno Rajahalme <jarno.rajahalme@nsn.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Make ofperr_encode_msg__() use correct Open Flow version in the header
of messages.
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
OpenFlow headers are not as uniform as they could be, with size, alignment,
and numbering changes from one version to another and across varieties
(e.g. ordinary messages vs. "stats" messages). Until now the Open vSwitch
internal APIs haven't done a good job of abstracting those differences in
header formats. This commit changes that; from this commit forward very
little code actually needs to understand the header format or numbering.
Instead, it can just encode or decode, or pull or put, the header using
a more abstract API using the ofpraw_, ofptype_, and other APIs in the
new ofp-msgs module.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Tested-by: Simon Horman <horms@verge.net.au>
Reviewed-by: Simon Horman <horms@verge.net.au>
* Where Open Flow 1.2 breaks apart error codes defined
in previous versions, provide all new definitions to
previous versions and map the numeric error code to
the first first definition supplied in ofp-errors.h.
The case handled so far is:
OFPERR_OFPBIC_BAD_EXP_TYPE -> { OFPERR_OFPBIC_BAD_EXPERIMENTER,
OFPERR_OFPBIC_BAD_EXP_TYPE }
* Where Open Flow 1.2 adds error codes that were previously
defined as Nicira extension errors define the later in terms
of the new codes.
Signed-off-by: Simon Horman <horms@verge.net.au>
[blp@nicira.com added better error checking in extract-ofp-errors, added
unit tests, miscellaneous cleanup]
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Simon Horman <horms@verge.net.au>
This commit switches from using the actual protocol values of error codes
internally in Open vSwitch, to using abstract values that are translated to
and from protocol values at message parsing and serialization time. I
believe that this makes the code easier to read and to write.
This is also one step along the way toward OpenFlow 1.1 support because
OpenFlow 1.1 renumbered a bunch of error codes.
Signed-off-by: Ben Pfaff <blp@nicira.com>
