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ovs/lib/bundle.h

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/* Copyright (c) 2011, 2012, 2013, 2014, 2017 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef BUNDLE_H
#define BUNDLE_H 1
#include <arpa/inet.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include "compiler.h"
#include "openflow/nicira-ext.h"
#include "openvswitch/ofp-errors.h"
#include "openvswitch/types.h"
struct ds;
struct flow;
struct flow_wildcards;
struct match;
struct ofpact_bundle;
struct ofpbuf;
struct ofputil_port_map;
/* NXAST_BUNDLE helper functions.
*
* See lib/ofp-actions.c for NXAST_BUNDLE specification. */
ofp-actions: Centralize all OpenFlow action code for maintainability. Until now, knowledge about OpenFlow has been somewhat scattered around the tree. Some of it is in ofp-actions, some of it is in ofp-util, some in separate files for individual actions, and most of the wire format declarations are in include/openflow. This commit centralizes all of that in ofp-actions. Encoding and decoding OpenFlow actions was previously broken up by OpenFlow version. This was OK with only OpenFlow 1.0 and 1.1, but each additional version added a new wrapper around the existing ones, which started to become hard to understand. This commit merges all of the processing for the different versions, to the extent that they are similar, making the version differences clearer. Previously, ofp-actions contained OpenFlow encoding and decoding, plus ofpact formatting, but OpenFlow parsing was separated into ofp-parse, which seems an odd division. This commit moves the parsing code into ofp-actions with the rest of the code. Before this commit, the four main bits of code associated with a particular ofpact--OpenFlow encoding and decoding, ofpact formatting and parsing--were all found far away from each other. This often made it hard to see what was going on for a particular ofpact, since you had to search around to many different pieces of code. This commit reorganizes so that all of the code for a given ofpact is in a single place. As a code refactoring, this commit has little visible behavioral change. The update to ofproto-dpif.at illustrates one minor bug fix as a side effect: a flow that was added with the action "dec_ttl" (a standard OpenFlow action) was previously formatted as "dec_ttl(0)" (using a Nicira extension to specifically direct packets bounced to the controller because of too-low TTL), but after this commit it is correctly formatted as "dec_ttl". The other visible effect is to drop support for the Nicira extension dec_ttl action in OpenFlow 1.1 and later in favor of the equivalent standard action. It seems unlikely that anyone was really using the Nicira extension in OF1.1 or later. Signed-off-by: Ben Pfaff <blp@nicira.com> Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
2014-08-11 12:50:36 -07:00
#define BUNDLE_MAX_SLAVES 2048
ofp_port_t bundle_execute(const struct ofpact_bundle *, const struct flow *,
struct flow_wildcards *wc,
bool (*slave_enabled)(ofp_port_t ofp_port, void *aux),
void *aux);
enum ofperr bundle_check(const struct ofpact_bundle *, ofp_port_t max_ports,
const struct match *);
char *bundle_parse(const char *, const struct ofputil_port_map *port_map,
struct ofpbuf *ofpacts) OVS_WARN_UNUSED_RESULT;
char *bundle_parse_load(const char *, const struct ofputil_port_map *port_map,
struct ofpbuf *ofpacts)
OVS_WARN_UNUSED_RESULT;
void bundle_format(const struct ofpact_bundle *,
const struct ofputil_port_map *, struct ds *);
#endif /* bundle.h */