2 * Copyright (c) 2008, 2009, 2010, 2011, 2013 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
22 #include "ofproto-provider.h"
28 /* Priority of the rule added by the fail-open subsystem when a switch enters
29 * fail-open mode. This priority value uniquely identifies a fail-open flow
30 * (OpenFlow priorities max out at 65535 and nothing else in Open vSwitch
31 * creates flows with this priority). And "f0" is mnemonic for "fail open"! */
32 #define FAIL_OPEN_PRIORITY 0xf0f0f0
34 /* Returns true if 'rule' is one created by the "fail open" logic, false
37 is_fail_open_rule(const struct rule *rule)
39 return rule->cr.priority == FAIL_OPEN_PRIORITY;
42 struct fail_open *fail_open_create(struct ofproto *, struct connmgr *);
43 void fail_open_destroy(struct fail_open *) OVS_EXCLUDED(ofproto_mutex);
44 void fail_open_wait(struct fail_open *);
45 bool fail_open_is_active(const struct fail_open *);
46 void fail_open_run(struct fail_open *);
47 void fail_open_maybe_recover(struct fail_open *) OVS_EXCLUDED(ofproto_mutex);
48 void fail_open_flushed(struct fail_open *) OVS_EXCLUDED(ofproto_mutex);
50 #endif /* fail-open.h */